^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * fs/cifs/smb2pdu.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright (C) International Business Machines Corp., 2009, 2013
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Etersoft, 2012
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Author(s): Steve French (sfrench@us.ibm.com)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Pavel Shilovsky (pshilovsky@samba.org) 2012
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Contains the routines for constructing the SMB2 PDUs themselves
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * This library is free software; you can redistribute it and/or modify
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * it under the terms of the GNU Lesser General Public License as published
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * by the Free Software Foundation; either version 2.1 of the License, or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * (at your option) any later version.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * This library is distributed in the hope that it will be useful,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * but WITHOUT ANY WARRANTY; without even the implied warranty of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * the GNU Lesser General Public License for more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * You should have received a copy of the GNU Lesser General Public License
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) * along with this library; if not, write to the Free Software
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) /* SMB2 PDU handling routines here - except for leftovers (eg session setup) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) /* Note that there are handle based routines which must be */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) /* treated slightly differently for reconnection purposes since we never */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) /* want to reuse a stale file handle and only the caller knows the file info */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include <linux/fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #include <linux/vfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #include <linux/task_io_accounting_ops.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #include <linux/uuid.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #include <linux/pagemap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #include <linux/xattr.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #include "smb2pdu.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #include "cifsglob.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #include "cifsacl.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #include "cifsproto.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #include "smb2proto.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #include "cifs_unicode.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #include "cifs_debug.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #include "ntlmssp.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #include "smb2status.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) #include "smb2glob.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #include "cifspdu.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #include "cifs_spnego.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #include "smbdirect.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #include "trace.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #ifdef CONFIG_CIFS_DFS_UPCALL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #include "dfs_cache.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) * The following table defines the expected "StructureSize" of SMB2 requests
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) * in order by SMB2 command. This is similar to "wct" in SMB/CIFS requests.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) * Note that commands are defined in smb2pdu.h in le16 but the array below is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) * indexed by command in host byte order.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) static const int smb2_req_struct_sizes[NUMBER_OF_SMB2_COMMANDS] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) /* SMB2_NEGOTIATE */ 36,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) /* SMB2_SESSION_SETUP */ 25,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) /* SMB2_LOGOFF */ 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) /* SMB2_TREE_CONNECT */ 9,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) /* SMB2_TREE_DISCONNECT */ 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) /* SMB2_CREATE */ 57,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) /* SMB2_CLOSE */ 24,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) /* SMB2_FLUSH */ 24,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) /* SMB2_READ */ 49,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) /* SMB2_WRITE */ 49,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) /* SMB2_LOCK */ 48,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) /* SMB2_IOCTL */ 57,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) /* SMB2_CANCEL */ 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) /* SMB2_ECHO */ 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) /* SMB2_QUERY_DIRECTORY */ 33,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) /* SMB2_CHANGE_NOTIFY */ 32,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) /* SMB2_QUERY_INFO */ 41,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) /* SMB2_SET_INFO */ 33,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) /* SMB2_OPLOCK_BREAK */ 24 /* BB this is 36 for LEASE_BREAK variant */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) int smb3_encryption_required(const struct cifs_tcon *tcon)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) if (!tcon || !tcon->ses)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) if ((tcon->ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) (tcon->share_flags & SHI1005_FLAGS_ENCRYPT_DATA))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) if (tcon->seal &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_ENCRYPTION))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) smb2_hdr_assemble(struct smb2_sync_hdr *shdr, __le16 smb2_cmd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) const struct cifs_tcon *tcon,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) struct TCP_Server_Info *server)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) shdr->ProtocolId = SMB2_PROTO_NUMBER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) shdr->StructureSize = cpu_to_le16(64);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) shdr->Command = smb2_cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) if (server) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) spin_lock(&server->req_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) /* Request up to 10 credits but don't go over the limit. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) if (server->credits >= server->max_credits)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) shdr->CreditRequest = cpu_to_le16(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) shdr->CreditRequest = cpu_to_le16(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) min_t(int, server->max_credits -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) server->credits, 10));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) spin_unlock(&server->req_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) shdr->CreditRequest = cpu_to_le16(2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) shdr->ProcessId = cpu_to_le32((__u16)current->tgid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) if (!tcon)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) /* GLOBAL_CAP_LARGE_MTU will only be set if dialect > SMB2.02 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) /* See sections 2.2.4 and 3.2.4.1.5 of MS-SMB2 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) if (server && (server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) shdr->CreditCharge = cpu_to_le16(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) /* else CreditCharge MBZ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) shdr->TreeId = tcon->tid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) /* Uid is not converted */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) if (tcon->ses)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) shdr->SessionId = tcon->ses->Suid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) * If we would set SMB2_FLAGS_DFS_OPERATIONS on open we also would have
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) * to pass the path on the Open SMB prefixed by \\server\share.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) * Not sure when we would need to do the augmented path (if ever) and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) * setting this flag breaks the SMB2 open operation since it is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) * illegal to send an empty path name (without \\server\share prefix)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) * when the DFS flag is set in the SMB open header. We could
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) * consider setting the flag on all operations other than open
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) * but it is safer to net set it for now.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) /* if (tcon->share_flags & SHI1005_FLAGS_DFS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) shdr->Flags |= SMB2_FLAGS_DFS_OPERATIONS; */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) if (server && server->sign && !smb3_encryption_required(tcon))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) shdr->Flags |= SMB2_FLAGS_SIGNED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) smb2_reconnect(__le16 smb2_command, struct cifs_tcon *tcon,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) struct TCP_Server_Info *server)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) struct nls_table *nls_codepage;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) struct cifs_ses *ses;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) int retries;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) * SMB2s NegProt, SessSetup, Logoff do not have tcon yet so
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) * check for tcp and smb session status done differently
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) * for those three - in the calling routine.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) if (tcon == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) if (smb2_command == SMB2_TREE_CONNECT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) if (tcon->tidStatus == CifsExiting) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) * only tree disconnect, open, and write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) * (and ulogoff which does not have tcon)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) * are allowed as we start force umount.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) if ((smb2_command != SMB2_WRITE) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) (smb2_command != SMB2_CREATE) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) (smb2_command != SMB2_TREE_DISCONNECT)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) cifs_dbg(FYI, "can not send cmd %d while umounting\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) smb2_command);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) if ((!tcon->ses) || (tcon->ses->status == CifsExiting) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) (!tcon->ses->server) || !server)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) ses = tcon->ses;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) retries = server->nr_targets;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) * Give demultiplex thread up to 10 seconds to each target available for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) * reconnect -- should be greater than cifs socket timeout which is 7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) * seconds.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) while (server->tcpStatus == CifsNeedReconnect) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) * Return to caller for TREE_DISCONNECT and LOGOFF and CLOSE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) * here since they are implicitly done when session drops.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) switch (smb2_command) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) * BB Should we keep oplock break and add flush to exceptions?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) case SMB2_TREE_DISCONNECT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) case SMB2_CANCEL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) case SMB2_CLOSE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) case SMB2_OPLOCK_BREAK:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) return -EAGAIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) rc = wait_event_interruptible_timeout(server->response_q,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) (server->tcpStatus != CifsNeedReconnect),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 10 * HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) if (rc < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) cifs_dbg(FYI, "%s: aborting reconnect due to a received signal by the process\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) return -ERESTARTSYS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) /* are we still trying to reconnect? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) if (server->tcpStatus != CifsNeedReconnect)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) if (retries && --retries)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) * on "soft" mounts we wait once. Hard mounts keep
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) * retrying until process is killed or server comes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) * back on-line
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) if (!tcon->retry) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) cifs_dbg(FYI, "gave up waiting on reconnect in smb_init\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) return -EHOSTDOWN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) retries = server->nr_targets;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) if (!tcon->ses->need_reconnect && !tcon->need_reconnect)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) nls_codepage = load_nls_default();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) * need to prevent multiple threads trying to simultaneously reconnect
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) * the same SMB session
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) mutex_lock(&tcon->ses->session_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) * Recheck after acquire mutex. If another thread is negotiating
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) * and the server never sends an answer the socket will be closed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) * and tcpStatus set to reconnect.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) if (server->tcpStatus == CifsNeedReconnect) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) rc = -EHOSTDOWN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) mutex_unlock(&tcon->ses->session_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) * If we are reconnecting an extra channel, bind
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) if (server->is_channel) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) ses->binding = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) ses->binding_chan = cifs_ses_find_chan(ses, server);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) rc = cifs_negotiate_protocol(0, tcon->ses);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) if (!rc && tcon->ses->need_reconnect) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) rc = cifs_setup_session(0, tcon->ses, nls_codepage);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) if ((rc == -EACCES) && !tcon->retry) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) rc = -EHOSTDOWN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) ses->binding = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) ses->binding_chan = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) mutex_unlock(&tcon->ses->session_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) goto failed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) * End of channel binding
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) ses->binding = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) ses->binding_chan = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) if (rc || !tcon->need_reconnect) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) mutex_unlock(&tcon->ses->session_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) cifs_mark_open_files_invalid(tcon);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) if (tcon->use_persistent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) tcon->need_reopen_files = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) rc = cifs_tree_connect(0, tcon, nls_codepage);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) mutex_unlock(&tcon->ses->session_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) cifs_dbg(FYI, "reconnect tcon rc = %d\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) /* If sess reconnected but tcon didn't, something strange ... */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) pr_warn_once("reconnect tcon failed rc = %d\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) if (smb2_command != SMB2_INTERNAL_CMD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) mod_delayed_work(cifsiod_wq, &server->reconnect, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) atomic_inc(&tconInfoReconnectCount);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) * Check if handle based operation so we know whether we can continue
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) * or not without returning to caller to reset file handle.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) * BB Is flush done by server on drop of tcp session? Should we special
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) * case it and skip above?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) switch (smb2_command) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) case SMB2_FLUSH:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) case SMB2_READ:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) case SMB2_WRITE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) case SMB2_LOCK:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) case SMB2_IOCTL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) case SMB2_QUERY_DIRECTORY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) case SMB2_CHANGE_NOTIFY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) case SMB2_QUERY_INFO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) case SMB2_SET_INFO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) rc = -EAGAIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) failed:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) unload_nls(nls_codepage);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) fill_small_buf(__le16 smb2_command, struct cifs_tcon *tcon,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) struct TCP_Server_Info *server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) void *buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) unsigned int *total_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) struct smb2_sync_pdu *spdu = (struct smb2_sync_pdu *)buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) /* lookup word count ie StructureSize from table */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) __u16 parmsize = smb2_req_struct_sizes[le16_to_cpu(smb2_command)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) * smaller than SMALL_BUFFER_SIZE but bigger than fixed area of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) * largest operations (Create)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) memset(buf, 0, 256);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) smb2_hdr_assemble(&spdu->sync_hdr, smb2_command, tcon, server);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) spdu->StructureSize2 = cpu_to_le16(parmsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) *total_len = parmsize + sizeof(struct smb2_sync_hdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) * Allocate and return pointer to an SMB request hdr, and set basic
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) * SMB information in the SMB header. If the return code is zero, this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) * function must have filled in request_buf pointer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) static int __smb2_plain_req_init(__le16 smb2_command, struct cifs_tcon *tcon,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) struct TCP_Server_Info *server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) void **request_buf, unsigned int *total_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) /* BB eventually switch this to SMB2 specific small buf size */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) if (smb2_command == SMB2_SET_INFO)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) *request_buf = cifs_buf_get();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) *request_buf = cifs_small_buf_get();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) if (*request_buf == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) /* BB should we add a retry in here if not a writepage? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) fill_small_buf(smb2_command, tcon, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) (struct smb2_sync_hdr *)(*request_buf),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) total_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) if (tcon != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) uint16_t com_code = le16_to_cpu(smb2_command);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) cifs_stats_inc(&tcon->stats.smb2_stats.smb2_com_sent[com_code]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) cifs_stats_inc(&tcon->num_smbs_sent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) static int smb2_plain_req_init(__le16 smb2_command, struct cifs_tcon *tcon,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) struct TCP_Server_Info *server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) void **request_buf, unsigned int *total_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) rc = smb2_reconnect(smb2_command, tcon, server);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) return __smb2_plain_req_init(smb2_command, tcon, server, request_buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) total_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) static int smb2_ioctl_req_init(u32 opcode, struct cifs_tcon *tcon,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) struct TCP_Server_Info *server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) void **request_buf, unsigned int *total_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) /* Skip reconnect only for FSCTL_VALIDATE_NEGOTIATE_INFO IOCTLs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) if (opcode == FSCTL_VALIDATE_NEGOTIATE_INFO) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) return __smb2_plain_req_init(SMB2_IOCTL, tcon, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) request_buf, total_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) return smb2_plain_req_init(SMB2_IOCTL, tcon, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) request_buf, total_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) /* For explanation of negotiate contexts see MS-SMB2 section 2.2.3.1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) build_preauth_ctxt(struct smb2_preauth_neg_context *pneg_ctxt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) pneg_ctxt->ContextType = SMB2_PREAUTH_INTEGRITY_CAPABILITIES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) pneg_ctxt->DataLength = cpu_to_le16(38);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) pneg_ctxt->HashAlgorithmCount = cpu_to_le16(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) pneg_ctxt->SaltLength = cpu_to_le16(SMB311_LINUX_CLIENT_SALT_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) get_random_bytes(pneg_ctxt->Salt, SMB311_LINUX_CLIENT_SALT_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) pneg_ctxt->HashAlgorithms = SMB2_PREAUTH_INTEGRITY_SHA512;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) build_compression_ctxt(struct smb2_compression_capabilities_context *pneg_ctxt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) pneg_ctxt->ContextType = SMB2_COMPRESSION_CAPABILITIES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) pneg_ctxt->DataLength =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) cpu_to_le16(sizeof(struct smb2_compression_capabilities_context)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) - sizeof(struct smb2_neg_context));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) pneg_ctxt->CompressionAlgorithmCount = cpu_to_le16(3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) pneg_ctxt->CompressionAlgorithms[0] = SMB3_COMPRESS_LZ77;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) pneg_ctxt->CompressionAlgorithms[1] = SMB3_COMPRESS_LZ77_HUFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) pneg_ctxt->CompressionAlgorithms[2] = SMB3_COMPRESS_LZNT1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) build_encrypt_ctxt(struct smb2_encryption_neg_context *pneg_ctxt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) pneg_ctxt->ContextType = SMB2_ENCRYPTION_CAPABILITIES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) if (require_gcm_256) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) pneg_ctxt->DataLength = cpu_to_le16(4); /* Cipher Count + 1 cipher */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) pneg_ctxt->CipherCount = cpu_to_le16(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) pneg_ctxt->Ciphers[0] = SMB2_ENCRYPTION_AES256_GCM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) } else if (enable_gcm_256) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) pneg_ctxt->DataLength = cpu_to_le16(8); /* Cipher Count + 3 ciphers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) pneg_ctxt->CipherCount = cpu_to_le16(3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) pneg_ctxt->Ciphers[0] = SMB2_ENCRYPTION_AES128_GCM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) pneg_ctxt->Ciphers[1] = SMB2_ENCRYPTION_AES256_GCM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) pneg_ctxt->Ciphers[2] = SMB2_ENCRYPTION_AES128_CCM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) pneg_ctxt->DataLength = cpu_to_le16(6); /* Cipher Count + 2 ciphers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) pneg_ctxt->CipherCount = cpu_to_le16(2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) pneg_ctxt->Ciphers[0] = SMB2_ENCRYPTION_AES128_GCM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) pneg_ctxt->Ciphers[1] = SMB2_ENCRYPTION_AES128_CCM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) static unsigned int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) build_netname_ctxt(struct smb2_netname_neg_context *pneg_ctxt, char *hostname)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) struct nls_table *cp = load_nls_default();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) pneg_ctxt->ContextType = SMB2_NETNAME_NEGOTIATE_CONTEXT_ID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) /* copy up to max of first 100 bytes of server name to NetName field */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) pneg_ctxt->DataLength = cpu_to_le16(2 * cifs_strtoUTF16(pneg_ctxt->NetName, hostname, 100, cp));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) /* context size is DataLength + minimal smb2_neg_context */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) return DIV_ROUND_UP(le16_to_cpu(pneg_ctxt->DataLength) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) sizeof(struct smb2_neg_context), 8) * 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) build_posix_ctxt(struct smb2_posix_neg_context *pneg_ctxt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) pneg_ctxt->ContextType = SMB2_POSIX_EXTENSIONS_AVAILABLE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) pneg_ctxt->DataLength = cpu_to_le16(POSIX_CTXT_DATA_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) /* SMB2_CREATE_TAG_POSIX is "0x93AD25509CB411E7B42383DE968BCD7C" */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) pneg_ctxt->Name[0] = 0x93;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) pneg_ctxt->Name[1] = 0xAD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) pneg_ctxt->Name[2] = 0x25;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) pneg_ctxt->Name[3] = 0x50;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) pneg_ctxt->Name[4] = 0x9C;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) pneg_ctxt->Name[5] = 0xB4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) pneg_ctxt->Name[6] = 0x11;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) pneg_ctxt->Name[7] = 0xE7;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) pneg_ctxt->Name[8] = 0xB4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) pneg_ctxt->Name[9] = 0x23;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) pneg_ctxt->Name[10] = 0x83;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) pneg_ctxt->Name[11] = 0xDE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) pneg_ctxt->Name[12] = 0x96;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) pneg_ctxt->Name[13] = 0x8B;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) pneg_ctxt->Name[14] = 0xCD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) pneg_ctxt->Name[15] = 0x7C;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) assemble_neg_contexts(struct smb2_negotiate_req *req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) struct TCP_Server_Info *server, unsigned int *total_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) char *pneg_ctxt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) unsigned int ctxt_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) if (*total_len > 200) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) /* In case length corrupted don't want to overrun smb buffer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) cifs_server_dbg(VFS, "Bad frame length assembling neg contexts\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) * round up total_len of fixed part of SMB3 negotiate request to 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) * byte boundary before adding negotiate contexts
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) *total_len = roundup(*total_len, 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) pneg_ctxt = (*total_len) + (char *)req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) req->NegotiateContextOffset = cpu_to_le32(*total_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) build_preauth_ctxt((struct smb2_preauth_neg_context *)pneg_ctxt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) ctxt_len = DIV_ROUND_UP(sizeof(struct smb2_preauth_neg_context), 8) * 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) *total_len += ctxt_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) pneg_ctxt += ctxt_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) build_encrypt_ctxt((struct smb2_encryption_neg_context *)pneg_ctxt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) ctxt_len = DIV_ROUND_UP(sizeof(struct smb2_encryption_neg_context), 8) * 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) *total_len += ctxt_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) pneg_ctxt += ctxt_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) if (server->compress_algorithm) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) build_compression_ctxt((struct smb2_compression_capabilities_context *)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) pneg_ctxt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) ctxt_len = DIV_ROUND_UP(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) sizeof(struct smb2_compression_capabilities_context),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) 8) * 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) *total_len += ctxt_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) pneg_ctxt += ctxt_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) req->NegotiateContextCount = cpu_to_le16(5);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) req->NegotiateContextCount = cpu_to_le16(4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) ctxt_len = build_netname_ctxt((struct smb2_netname_neg_context *)pneg_ctxt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) server->hostname);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) *total_len += ctxt_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) pneg_ctxt += ctxt_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) build_posix_ctxt((struct smb2_posix_neg_context *)pneg_ctxt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) *total_len += sizeof(struct smb2_posix_neg_context);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) static void decode_preauth_context(struct smb2_preauth_neg_context *ctxt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) unsigned int len = le16_to_cpu(ctxt->DataLength);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) /* If invalid preauth context warn but use what we requested, SHA-512 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) if (len < MIN_PREAUTH_CTXT_DATA_LEN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) pr_warn_once("server sent bad preauth context\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) } else if (len < MIN_PREAUTH_CTXT_DATA_LEN + le16_to_cpu(ctxt->SaltLength)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) pr_warn_once("server sent invalid SaltLength\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) if (le16_to_cpu(ctxt->HashAlgorithmCount) != 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) pr_warn_once("Invalid SMB3 hash algorithm count\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) if (ctxt->HashAlgorithms != SMB2_PREAUTH_INTEGRITY_SHA512)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) pr_warn_once("unknown SMB3 hash algorithm\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) static void decode_compress_ctx(struct TCP_Server_Info *server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) struct smb2_compression_capabilities_context *ctxt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) unsigned int len = le16_to_cpu(ctxt->DataLength);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) /* sizeof compress context is a one element compression capbility struct */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) if (len < 10) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) pr_warn_once("server sent bad compression cntxt\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) if (le16_to_cpu(ctxt->CompressionAlgorithmCount) != 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) pr_warn_once("Invalid SMB3 compress algorithm count\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) if (le16_to_cpu(ctxt->CompressionAlgorithms[0]) > 3) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) pr_warn_once("unknown compression algorithm\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) server->compress_algorithm = ctxt->CompressionAlgorithms[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) static int decode_encrypt_ctx(struct TCP_Server_Info *server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) struct smb2_encryption_neg_context *ctxt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) unsigned int len = le16_to_cpu(ctxt->DataLength);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) cifs_dbg(FYI, "decode SMB3.11 encryption neg context of len %d\n", len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) if (len < MIN_ENCRYPT_CTXT_DATA_LEN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) pr_warn_once("server sent bad crypto ctxt len\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) if (le16_to_cpu(ctxt->CipherCount) != 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) pr_warn_once("Invalid SMB3.11 cipher count\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) cifs_dbg(FYI, "SMB311 cipher type:%d\n", le16_to_cpu(ctxt->Ciphers[0]));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) if (require_gcm_256) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) if (ctxt->Ciphers[0] != SMB2_ENCRYPTION_AES256_GCM) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) cifs_dbg(VFS, "Server does not support requested encryption type (AES256 GCM)\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) } else if (ctxt->Ciphers[0] == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) * e.g. if server only supported AES256_CCM (very unlikely)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) * or server supported no encryption types or had all disabled.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) * Since GLOBAL_CAP_ENCRYPTION will be not set, in the case
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) * in which mount requested encryption ("seal") checks later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) * on during tree connection will return proper rc, but if
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) * seal not requested by client, since server is allowed to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) * return 0 to indicate no supported cipher, we can't fail here
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) server->cipher_type = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) server->capabilities &= ~SMB2_GLOBAL_CAP_ENCRYPTION;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) pr_warn_once("Server does not support requested encryption types\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) } else if ((ctxt->Ciphers[0] != SMB2_ENCRYPTION_AES128_CCM) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) (ctxt->Ciphers[0] != SMB2_ENCRYPTION_AES128_GCM) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) (ctxt->Ciphers[0] != SMB2_ENCRYPTION_AES256_GCM)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) /* server returned a cipher we didn't ask for */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) pr_warn_once("Invalid SMB3.11 cipher returned\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) server->cipher_type = ctxt->Ciphers[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) server->capabilities |= SMB2_GLOBAL_CAP_ENCRYPTION;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) static int smb311_decode_neg_context(struct smb2_negotiate_rsp *rsp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) struct TCP_Server_Info *server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) unsigned int len_of_smb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) struct smb2_neg_context *pctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) unsigned int offset = le32_to_cpu(rsp->NegotiateContextOffset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) unsigned int ctxt_cnt = le16_to_cpu(rsp->NegotiateContextCount);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) unsigned int len_of_ctxts, i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) cifs_dbg(FYI, "decoding %d negotiate contexts\n", ctxt_cnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) if (len_of_smb <= offset) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) cifs_server_dbg(VFS, "Invalid response: negotiate context offset\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) len_of_ctxts = len_of_smb - offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) for (i = 0; i < ctxt_cnt; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) int clen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) /* check that offset is not beyond end of SMB */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) if (len_of_ctxts == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) if (len_of_ctxts < sizeof(struct smb2_neg_context))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) pctx = (struct smb2_neg_context *)(offset + (char *)rsp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) clen = le16_to_cpu(pctx->DataLength);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) if (clen > len_of_ctxts)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) if (pctx->ContextType == SMB2_PREAUTH_INTEGRITY_CAPABILITIES)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) decode_preauth_context(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) (struct smb2_preauth_neg_context *)pctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) else if (pctx->ContextType == SMB2_ENCRYPTION_CAPABILITIES)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) rc = decode_encrypt_ctx(server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) (struct smb2_encryption_neg_context *)pctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) else if (pctx->ContextType == SMB2_COMPRESSION_CAPABILITIES)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) decode_compress_ctx(server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) (struct smb2_compression_capabilities_context *)pctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) else if (pctx->ContextType == SMB2_POSIX_EXTENSIONS_AVAILABLE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) server->posix_ext_supported = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) cifs_server_dbg(VFS, "unknown negcontext of type %d ignored\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) le16_to_cpu(pctx->ContextType));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) /* offsets must be 8 byte aligned */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) clen = (clen + 7) & ~0x7;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) offset += clen + sizeof(struct smb2_neg_context);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) len_of_ctxts -= clen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) static struct create_posix *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) create_posix_buf(umode_t mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) struct create_posix *buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) buf = kzalloc(sizeof(struct create_posix),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) if (!buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) buf->ccontext.DataOffset =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) cpu_to_le16(offsetof(struct create_posix, Mode));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) buf->ccontext.DataLength = cpu_to_le32(4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) buf->ccontext.NameOffset =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) cpu_to_le16(offsetof(struct create_posix, Name));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) buf->ccontext.NameLength = cpu_to_le16(16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) /* SMB2_CREATE_TAG_POSIX is "0x93AD25509CB411E7B42383DE968BCD7C" */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) buf->Name[0] = 0x93;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) buf->Name[1] = 0xAD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) buf->Name[2] = 0x25;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) buf->Name[3] = 0x50;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) buf->Name[4] = 0x9C;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) buf->Name[5] = 0xB4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) buf->Name[6] = 0x11;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) buf->Name[7] = 0xE7;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) buf->Name[8] = 0xB4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) buf->Name[9] = 0x23;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) buf->Name[10] = 0x83;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) buf->Name[11] = 0xDE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) buf->Name[12] = 0x96;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) buf->Name[13] = 0x8B;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) buf->Name[14] = 0xCD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) buf->Name[15] = 0x7C;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) buf->Mode = cpu_to_le32(mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) cifs_dbg(FYI, "mode on posix create 0%o\n", mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) return buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) add_posix_context(struct kvec *iov, unsigned int *num_iovec, umode_t mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) struct smb2_create_req *req = iov[0].iov_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) unsigned int num = *num_iovec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) iov[num].iov_base = create_posix_buf(mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) if (mode == ACL_NO_MODE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) cifs_dbg(FYI, "Invalid mode\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) if (iov[num].iov_base == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) iov[num].iov_len = sizeof(struct create_posix);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) if (!req->CreateContextsOffset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) req->CreateContextsOffset = cpu_to_le32(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) sizeof(struct smb2_create_req) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) iov[num - 1].iov_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) le32_add_cpu(&req->CreateContextsLength, sizeof(struct create_posix));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) *num_iovec = num + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) * SMB2 Worker functions follow:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) * The general structure of the worker functions is:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) * 1) Call smb2_init (assembles SMB2 header)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) * 2) Initialize SMB2 command specific fields in fixed length area of SMB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) * 3) Call smb_sendrcv2 (sends request on socket and waits for response)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) * 4) Decode SMB2 command specific fields in the fixed length area
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) * 5) Decode variable length data area (if any for this SMB2 command type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) * 6) Call free smb buffer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) * 7) return
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) SMB2_negotiate(const unsigned int xid, struct cifs_ses *ses)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) struct smb_rqst rqst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) struct smb2_negotiate_req *req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) struct smb2_negotiate_rsp *rsp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) struct kvec iov[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) struct kvec rsp_iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) int resp_buftype;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) struct TCP_Server_Info *server = cifs_ses_server(ses);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) int blob_offset, blob_length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) char *security_blob;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) int flags = CIFS_NEG_OP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) unsigned int total_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) cifs_dbg(FYI, "Negotiate protocol\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) if (!server) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) WARN(1, "%s: server is NULL!\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) rc = smb2_plain_req_init(SMB2_NEGOTIATE, NULL, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) (void **) &req, &total_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) req->sync_hdr.SessionId = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) memset(server->preauth_sha_hash, 0, SMB2_PREAUTH_HASH_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) memset(ses->preauth_sha_hash, 0, SMB2_PREAUTH_HASH_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) if (strcmp(server->vals->version_string,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) SMB3ANY_VERSION_STRING) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) req->Dialects[0] = cpu_to_le16(SMB30_PROT_ID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) req->Dialects[1] = cpu_to_le16(SMB302_PROT_ID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) req->DialectCount = cpu_to_le16(2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) total_len += 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) } else if (strcmp(server->vals->version_string,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) SMBDEFAULT_VERSION_STRING) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) req->Dialects[0] = cpu_to_le16(SMB21_PROT_ID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) req->Dialects[1] = cpu_to_le16(SMB30_PROT_ID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) req->Dialects[2] = cpu_to_le16(SMB302_PROT_ID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) req->Dialects[3] = cpu_to_le16(SMB311_PROT_ID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) req->DialectCount = cpu_to_le16(4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) total_len += 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) /* otherwise send specific dialect */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) req->Dialects[0] = cpu_to_le16(server->vals->protocol_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) req->DialectCount = cpu_to_le16(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) total_len += 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) /* only one of SMB2 signing flags may be set in SMB2 request */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) if (ses->sign)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) req->SecurityMode = cpu_to_le16(SMB2_NEGOTIATE_SIGNING_REQUIRED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) else if (global_secflags & CIFSSEC_MAY_SIGN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) req->SecurityMode = cpu_to_le16(SMB2_NEGOTIATE_SIGNING_ENABLED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) req->SecurityMode = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) req->Capabilities = cpu_to_le32(server->vals->req_capabilities);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) if (ses->chan_max > 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) req->Capabilities |= cpu_to_le32(SMB2_GLOBAL_CAP_MULTI_CHANNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) /* ClientGUID must be zero for SMB2.02 dialect */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) if (server->vals->protocol_id == SMB20_PROT_ID)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) memset(req->ClientGUID, 0, SMB2_CLIENT_GUID_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) memcpy(req->ClientGUID, server->client_guid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) SMB2_CLIENT_GUID_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) if ((server->vals->protocol_id == SMB311_PROT_ID) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) (strcmp(server->vals->version_string,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) SMBDEFAULT_VERSION_STRING) == 0))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) assemble_neg_contexts(req, server, &total_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) iov[0].iov_base = (char *)req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) iov[0].iov_len = total_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) memset(&rqst, 0, sizeof(struct smb_rqst));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) rqst.rq_iov = iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) rqst.rq_nvec = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) rc = cifs_send_recv(xid, ses, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) &rqst, &resp_buftype, flags, &rsp_iov);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) cifs_small_buf_release(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) rsp = (struct smb2_negotiate_rsp *)rsp_iov.iov_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) * No tcon so can't do
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) * cifs_stats_inc(&tcon->stats.smb2_stats.smb2_com_fail[SMB2...]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) if (rc == -EOPNOTSUPP) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) cifs_server_dbg(VFS, "Dialect not supported by server. Consider specifying vers=1.0 or vers=2.0 on mount for accessing older servers\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) goto neg_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) } else if (rc != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) goto neg_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) if (strcmp(server->vals->version_string,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) SMB3ANY_VERSION_STRING) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) if (rsp->DialectRevision == cpu_to_le16(SMB20_PROT_ID)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) cifs_server_dbg(VFS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) "SMB2 dialect returned but not requested\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) } else if (rsp->DialectRevision == cpu_to_le16(SMB21_PROT_ID)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) cifs_server_dbg(VFS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) "SMB2.1 dialect returned but not requested\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) } else if (strcmp(server->vals->version_string,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) SMBDEFAULT_VERSION_STRING) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) if (rsp->DialectRevision == cpu_to_le16(SMB20_PROT_ID)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) cifs_server_dbg(VFS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) "SMB2 dialect returned but not requested\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) } else if (rsp->DialectRevision == cpu_to_le16(SMB21_PROT_ID)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) /* ops set to 3.0 by default for default so update */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) server->ops = &smb21_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) server->vals = &smb21_values;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) } else if (rsp->DialectRevision == cpu_to_le16(SMB311_PROT_ID)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) server->ops = &smb311_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) server->vals = &smb311_values;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) } else if (le16_to_cpu(rsp->DialectRevision) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) server->vals->protocol_id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) /* if requested single dialect ensure returned dialect matched */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) cifs_server_dbg(VFS, "Invalid 0x%x dialect returned: not requested\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) le16_to_cpu(rsp->DialectRevision));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) cifs_dbg(FYI, "mode 0x%x\n", rsp->SecurityMode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) if (rsp->DialectRevision == cpu_to_le16(SMB20_PROT_ID))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) cifs_dbg(FYI, "negotiated smb2.0 dialect\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) else if (rsp->DialectRevision == cpu_to_le16(SMB21_PROT_ID))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) cifs_dbg(FYI, "negotiated smb2.1 dialect\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) else if (rsp->DialectRevision == cpu_to_le16(SMB30_PROT_ID))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) cifs_dbg(FYI, "negotiated smb3.0 dialect\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) else if (rsp->DialectRevision == cpu_to_le16(SMB302_PROT_ID))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) cifs_dbg(FYI, "negotiated smb3.02 dialect\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) else if (rsp->DialectRevision == cpu_to_le16(SMB311_PROT_ID))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) cifs_dbg(FYI, "negotiated smb3.1.1 dialect\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) cifs_server_dbg(VFS, "Invalid dialect returned by server 0x%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) le16_to_cpu(rsp->DialectRevision));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) rc = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) goto neg_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) server->dialect = le16_to_cpu(rsp->DialectRevision);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) * Keep a copy of the hash after negprot. This hash will be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) * the starting hash value for all sessions made from this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) * server.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) memcpy(server->preauth_sha_hash, ses->preauth_sha_hash,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) SMB2_PREAUTH_HASH_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) /* SMB2 only has an extended negflavor */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) server->negflavor = CIFS_NEGFLAVOR_EXTENDED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) /* set it to the maximum buffer size value we can send with 1 credit */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) server->maxBuf = min_t(unsigned int, le32_to_cpu(rsp->MaxTransactSize),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) SMB2_MAX_BUFFER_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) server->max_read = le32_to_cpu(rsp->MaxReadSize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) server->max_write = le32_to_cpu(rsp->MaxWriteSize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) server->sec_mode = le16_to_cpu(rsp->SecurityMode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) if ((server->sec_mode & SMB2_SEC_MODE_FLAGS_ALL) != server->sec_mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) cifs_dbg(FYI, "Server returned unexpected security mode 0x%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) server->sec_mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) server->capabilities = le32_to_cpu(rsp->Capabilities);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) /* Internal types */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) server->capabilities |= SMB2_NT_FIND | SMB2_LARGE_FILES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) * SMB3.0 supports only 1 cipher and doesn't have a encryption neg context
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) * Set the cipher type manually.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) if (server->dialect == SMB30_PROT_ID && (server->capabilities & SMB2_GLOBAL_CAP_ENCRYPTION))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) server->cipher_type = SMB2_ENCRYPTION_AES128_CCM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) security_blob = smb2_get_data_area_len(&blob_offset, &blob_length,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) (struct smb2_sync_hdr *)rsp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) * See MS-SMB2 section 2.2.4: if no blob, client picks default which
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) * for us will be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) * ses->sectype = RawNTLMSSP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967) * but for time being this is our only auth choice so doesn't matter.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) * We just found a server which sets blob length to zero expecting raw.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) if (blob_length == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) cifs_dbg(FYI, "missing security blob on negprot\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) server->sec_ntlmssp = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) rc = cifs_enable_signing(server, ses->sign);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) goto neg_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) if (blob_length) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) rc = decode_negTokenInit(security_blob, blob_length, server);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) if (rc == 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981) rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982) else if (rc == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) rc = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) if (rsp->DialectRevision == cpu_to_le16(SMB311_PROT_ID)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) if (rsp->NegotiateContextCount)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) rc = smb311_decode_neg_context(rsp, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) rsp_iov.iov_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) cifs_server_dbg(VFS, "Missing expected negotiate contexts\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) neg_exit:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994) free_rsp_buf(resp_buftype, rsp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) int smb3_validate_negotiate(const unsigned int xid, struct cifs_tcon *tcon)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) struct validate_negotiate_info_req *pneg_inbuf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) struct validate_negotiate_info_rsp *pneg_rsp = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) u32 rsplen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) u32 inbuflen; /* max of 4 dialects */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) struct TCP_Server_Info *server = tcon->ses->server;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) cifs_dbg(FYI, "validate negotiate\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) /* In SMB3.11 preauth integrity supersedes validate negotiate */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) if (server->dialect == SMB311_PROT_ID)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014) * validation ioctl must be signed, so no point sending this if we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015) * can not sign it (ie are not known user). Even if signing is not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016) * required (enabled but not negotiated), in those cases we selectively
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017) * sign just this, the first and only signed request on a connection.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) * Having validation of negotiate info helps reduce attack vectors.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020) if (tcon->ses->session_flags & SMB2_SESSION_FLAG_IS_GUEST)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) return 0; /* validation requires signing */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) if (tcon->ses->user_name == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) cifs_dbg(FYI, "Can't validate negotiate: null user mount\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) return 0; /* validation requires signing */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028) if (tcon->ses->session_flags & SMB2_SESSION_FLAG_IS_NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029) cifs_tcon_dbg(VFS, "Unexpected null user (anonymous) auth flag sent by server\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031) pneg_inbuf = kmalloc(sizeof(*pneg_inbuf), GFP_NOFS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032) if (!pneg_inbuf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035) pneg_inbuf->Capabilities =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) cpu_to_le32(server->vals->req_capabilities);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) if (tcon->ses->chan_max > 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) pneg_inbuf->Capabilities |= cpu_to_le32(SMB2_GLOBAL_CAP_MULTI_CHANNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) memcpy(pneg_inbuf->Guid, server->client_guid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041) SMB2_CLIENT_GUID_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043) if (tcon->ses->sign)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044) pneg_inbuf->SecurityMode =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045) cpu_to_le16(SMB2_NEGOTIATE_SIGNING_REQUIRED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046) else if (global_secflags & CIFSSEC_MAY_SIGN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047) pneg_inbuf->SecurityMode =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048) cpu_to_le16(SMB2_NEGOTIATE_SIGNING_ENABLED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) pneg_inbuf->SecurityMode = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) if (strcmp(server->vals->version_string,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054) SMB3ANY_VERSION_STRING) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055) pneg_inbuf->Dialects[0] = cpu_to_le16(SMB30_PROT_ID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) pneg_inbuf->Dialects[1] = cpu_to_le16(SMB302_PROT_ID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) pneg_inbuf->DialectCount = cpu_to_le16(2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058) /* structure is big enough for 3 dialects, sending only 2 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059) inbuflen = sizeof(*pneg_inbuf) -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) (2 * sizeof(pneg_inbuf->Dialects[0]));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061) } else if (strcmp(server->vals->version_string,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062) SMBDEFAULT_VERSION_STRING) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) pneg_inbuf->Dialects[0] = cpu_to_le16(SMB21_PROT_ID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) pneg_inbuf->Dialects[1] = cpu_to_le16(SMB30_PROT_ID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065) pneg_inbuf->Dialects[2] = cpu_to_le16(SMB302_PROT_ID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066) pneg_inbuf->Dialects[3] = cpu_to_le16(SMB311_PROT_ID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) pneg_inbuf->DialectCount = cpu_to_le16(4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) /* structure is big enough for 3 dialects */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) inbuflen = sizeof(*pneg_inbuf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) /* otherwise specific dialect was requested */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072) pneg_inbuf->Dialects[0] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073) cpu_to_le16(server->vals->protocol_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074) pneg_inbuf->DialectCount = cpu_to_le16(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) /* structure is big enough for 3 dialects, sending only 1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076) inbuflen = sizeof(*pneg_inbuf) -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077) sizeof(pneg_inbuf->Dialects[0]) * 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080) rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081) FSCTL_VALIDATE_NEGOTIATE_INFO, true /* is_fsctl */,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082) (char *)pneg_inbuf, inbuflen, CIFSMaxBufSize,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083) (char **)&pneg_rsp, &rsplen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084) if (rc == -EOPNOTSUPP) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086) * Old Windows versions or Netapp SMB server can return
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087) * not supported error. Client should accept it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) cifs_tcon_dbg(VFS, "Server does not support validate negotiate\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090) rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091) goto out_free_inbuf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092) } else if (rc != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093) cifs_tcon_dbg(VFS, "validate protocol negotiate failed: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094) rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095) rc = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096) goto out_free_inbuf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099) rc = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) if (rsplen != sizeof(*pneg_rsp)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101) cifs_tcon_dbg(VFS, "Invalid protocol negotiate response size: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102) rsplen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104) /* relax check since Mac returns max bufsize allowed on ioctl */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105) if (rsplen > CIFSMaxBufSize || rsplen < sizeof(*pneg_rsp))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106) goto out_free_rsp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109) /* check validate negotiate info response matches what we got earlier */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) if (pneg_rsp->Dialect != cpu_to_le16(server->dialect))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111) goto vneg_out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113) if (pneg_rsp->SecurityMode != cpu_to_le16(server->sec_mode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114) goto vneg_out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116) /* do not validate server guid because not saved at negprot time yet */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118) if ((le32_to_cpu(pneg_rsp->Capabilities) | SMB2_NT_FIND |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119) SMB2_LARGE_FILES) != server->capabilities)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120) goto vneg_out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122) /* validate negotiate successful */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123) rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124) cifs_dbg(FYI, "validate negotiate info successful\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125) goto out_free_rsp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127) vneg_out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128) cifs_tcon_dbg(VFS, "protocol revalidation - security settings mismatch\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) out_free_rsp:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130) kfree(pneg_rsp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131) out_free_inbuf:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132) kfree(pneg_inbuf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136) enum securityEnum
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137) smb2_select_sectype(struct TCP_Server_Info *server, enum securityEnum requested)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139) switch (requested) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140) case Kerberos:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) case RawNTLMSSP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142) return requested;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143) case NTLMv2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144) return RawNTLMSSP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145) case Unspecified:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146) if (server->sec_ntlmssp &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147) (global_secflags & CIFSSEC_MAY_NTLMSSP))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148) return RawNTLMSSP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149) if ((server->sec_kerberos || server->sec_mskerberos) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150) (global_secflags & CIFSSEC_MAY_KRB5))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151) return Kerberos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154) return Unspecified;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158) struct SMB2_sess_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159) unsigned int xid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160) struct cifs_ses *ses;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161) struct nls_table *nls_cp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162) void (*func)(struct SMB2_sess_data *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163) int result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164) u64 previous_session;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1166) /* we will send the SMB in three pieces:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1167) * a fixed length beginning part, an optional
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1168) * SPNEGO blob (which can be zero length), and a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1169) * last part which will include the strings
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1170) * and rest of bcc area. This allows us to avoid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1171) * a large buffer 17K allocation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1172) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1173) int buf0_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1174) struct kvec iov[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1175) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1177) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1178) SMB2_sess_alloc_buffer(struct SMB2_sess_data *sess_data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1179) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1180) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1181) struct cifs_ses *ses = sess_data->ses;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1182) struct smb2_sess_setup_req *req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1183) struct TCP_Server_Info *server = cifs_ses_server(ses);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1184) unsigned int total_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1185)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1186) rc = smb2_plain_req_init(SMB2_SESSION_SETUP, NULL, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1187) (void **) &req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1188) &total_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1189) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1190) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1192) if (sess_data->ses->binding) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1193) req->sync_hdr.SessionId = sess_data->ses->Suid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1194) req->sync_hdr.Flags |= SMB2_FLAGS_SIGNED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1195) req->PreviousSessionId = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1196) req->Flags = SMB2_SESSION_REQ_FLAG_BINDING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1197) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1198) /* First session, not a reauthenticate */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1199) req->sync_hdr.SessionId = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1200) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1201) * if reconnect, we need to send previous sess id
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1202) * otherwise it is 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1203) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1204) req->PreviousSessionId = sess_data->previous_session;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1205) req->Flags = 0; /* MBZ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1206) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1207)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1208) /* enough to enable echos and oplocks and one max size write */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1209) req->sync_hdr.CreditRequest = cpu_to_le16(130);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1211) /* only one of SMB2 signing flags may be set in SMB2 request */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1212) if (server->sign)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1213) req->SecurityMode = SMB2_NEGOTIATE_SIGNING_REQUIRED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1214) else if (global_secflags & CIFSSEC_MAY_SIGN) /* one flag unlike MUST_ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1215) req->SecurityMode = SMB2_NEGOTIATE_SIGNING_ENABLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1216) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1217) req->SecurityMode = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1219) #ifdef CONFIG_CIFS_DFS_UPCALL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1220) req->Capabilities = cpu_to_le32(SMB2_GLOBAL_CAP_DFS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1221) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1222) req->Capabilities = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1223) #endif /* DFS_UPCALL */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1225) req->Channel = 0; /* MBZ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1227) sess_data->iov[0].iov_base = (char *)req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1228) /* 1 for pad */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1229) sess_data->iov[0].iov_len = total_len - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1230) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1231) * This variable will be used to clear the buffer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1232) * allocated above in case of any error in the calling function.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1233) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1234) sess_data->buf0_type = CIFS_SMALL_BUFFER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1236) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1237) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1239) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1240) SMB2_sess_free_buffer(struct SMB2_sess_data *sess_data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1241) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1242) free_rsp_buf(sess_data->buf0_type, sess_data->iov[0].iov_base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1243) sess_data->buf0_type = CIFS_NO_BUFFER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1244) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1246) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1247) SMB2_sess_sendreceive(struct SMB2_sess_data *sess_data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1248) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1249) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1250) struct smb_rqst rqst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1251) struct smb2_sess_setup_req *req = sess_data->iov[0].iov_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1252) struct kvec rsp_iov = { NULL, 0 };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1253)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1254) /* Testing shows that buffer offset must be at location of Buffer[0] */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1255) req->SecurityBufferOffset =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1256) cpu_to_le16(sizeof(struct smb2_sess_setup_req) - 1 /* pad */);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1257) req->SecurityBufferLength = cpu_to_le16(sess_data->iov[1].iov_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1259) memset(&rqst, 0, sizeof(struct smb_rqst));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1260) rqst.rq_iov = sess_data->iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1261) rqst.rq_nvec = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1263) /* BB add code to build os and lm fields */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1264) rc = cifs_send_recv(sess_data->xid, sess_data->ses,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1265) cifs_ses_server(sess_data->ses),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1266) &rqst,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1267) &sess_data->buf0_type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1268) CIFS_LOG_ERROR | CIFS_NEG_OP, &rsp_iov);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1269) cifs_small_buf_release(sess_data->iov[0].iov_base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1270) memcpy(&sess_data->iov[0], &rsp_iov, sizeof(struct kvec));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1271)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1272) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1273) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1275) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1276) SMB2_sess_establish_session(struct SMB2_sess_data *sess_data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1277) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1278) int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1279) struct cifs_ses *ses = sess_data->ses;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1280) struct TCP_Server_Info *server = cifs_ses_server(ses);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1281)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1282) mutex_lock(&server->srv_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1283) if (server->ops->generate_signingkey) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1284) rc = server->ops->generate_signingkey(ses);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1285) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1286) cifs_dbg(FYI,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1287) "SMB3 session key generation failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1288) mutex_unlock(&server->srv_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1289) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1290) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1291) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1292) if (!server->session_estab) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1293) server->sequence_number = 0x2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1294) server->session_estab = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1295) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1296) mutex_unlock(&server->srv_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1298) cifs_dbg(FYI, "SMB2/3 session established successfully\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1299) /* keep existing ses state if binding */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1300) if (!ses->binding) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1301) spin_lock(&GlobalMid_Lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1302) ses->status = CifsGood;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1303) ses->need_reconnect = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1304) spin_unlock(&GlobalMid_Lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1305) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1306)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1307) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1308) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1309)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1310) #ifdef CONFIG_CIFS_UPCALL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1311) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1312) SMB2_auth_kerberos(struct SMB2_sess_data *sess_data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1313) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1314) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1315) struct cifs_ses *ses = sess_data->ses;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1316) struct cifs_spnego_msg *msg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1317) struct key *spnego_key = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1318) struct smb2_sess_setup_rsp *rsp = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1320) rc = SMB2_sess_alloc_buffer(sess_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1321) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1322) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1323)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1324) spnego_key = cifs_get_spnego_key(ses);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1325) if (IS_ERR(spnego_key)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1326) rc = PTR_ERR(spnego_key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1327) if (rc == -ENOKEY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1328) cifs_dbg(VFS, "Verify user has a krb5 ticket and keyutils is installed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1329) spnego_key = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1330) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1331) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1332)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1333) msg = spnego_key->payload.data[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1334) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1335) * check version field to make sure that cifs.upcall is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1336) * sending us a response in an expected form
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1337) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1338) if (msg->version != CIFS_SPNEGO_UPCALL_VERSION) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1339) cifs_dbg(VFS, "bad cifs.upcall version. Expected %d got %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1340) CIFS_SPNEGO_UPCALL_VERSION, msg->version);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1341) rc = -EKEYREJECTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1342) goto out_put_spnego_key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1343) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1344)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1345) /* keep session key if binding */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1346) if (!ses->binding) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1347) ses->auth_key.response = kmemdup(msg->data, msg->sesskey_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1348) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1349) if (!ses->auth_key.response) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1350) cifs_dbg(VFS, "Kerberos can't allocate (%u bytes) memory\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1351) msg->sesskey_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1352) rc = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1353) goto out_put_spnego_key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1354) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1355) ses->auth_key.len = msg->sesskey_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1356) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1357)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1358) sess_data->iov[1].iov_base = msg->data + msg->sesskey_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1359) sess_data->iov[1].iov_len = msg->secblob_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1360)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1361) rc = SMB2_sess_sendreceive(sess_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1362) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1363) goto out_put_spnego_key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1364)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1365) rsp = (struct smb2_sess_setup_rsp *)sess_data->iov[0].iov_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1366) /* keep session id and flags if binding */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1367) if (!ses->binding) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1368) ses->Suid = rsp->sync_hdr.SessionId;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1369) ses->session_flags = le16_to_cpu(rsp->SessionFlags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1370) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1371)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1372) rc = SMB2_sess_establish_session(sess_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1373) out_put_spnego_key:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1374) key_invalidate(spnego_key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1375) key_put(spnego_key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1376) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1377) sess_data->result = rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1378) sess_data->func = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1379) SMB2_sess_free_buffer(sess_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1380) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1381) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1382) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1383) SMB2_auth_kerberos(struct SMB2_sess_data *sess_data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1384) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1385) cifs_dbg(VFS, "Kerberos negotiated but upcall support disabled!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1386) sess_data->result = -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1387) sess_data->func = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1388) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1389) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1390)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1391) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1392) SMB2_sess_auth_rawntlmssp_authenticate(struct SMB2_sess_data *sess_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1393)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1394) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1395) SMB2_sess_auth_rawntlmssp_negotiate(struct SMB2_sess_data *sess_data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1396) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1397) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1398) struct cifs_ses *ses = sess_data->ses;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1399) struct smb2_sess_setup_rsp *rsp = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1400) char *ntlmssp_blob = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1401) bool use_spnego = false; /* else use raw ntlmssp */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1402) u16 blob_length = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1403)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1404) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1405) * If memory allocation is successful, caller of this function
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1406) * frees it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1407) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1408) ses->ntlmssp = kmalloc(sizeof(struct ntlmssp_auth), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1409) if (!ses->ntlmssp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1410) rc = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1411) goto out_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1412) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1413) ses->ntlmssp->sesskey_per_smbsess = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1414)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1415) rc = SMB2_sess_alloc_buffer(sess_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1416) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1417) goto out_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1418)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1419) ntlmssp_blob = kmalloc(sizeof(struct _NEGOTIATE_MESSAGE),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1420) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1421) if (ntlmssp_blob == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1422) rc = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1423) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1424) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1425)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1426) build_ntlmssp_negotiate_blob(ntlmssp_blob, ses);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1427) if (use_spnego) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1428) /* BB eventually need to add this */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1429) cifs_dbg(VFS, "spnego not supported for SMB2 yet\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1430) rc = -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1431) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1432) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1433) blob_length = sizeof(struct _NEGOTIATE_MESSAGE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1434) /* with raw NTLMSSP we don't encapsulate in SPNEGO */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1435) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1436) sess_data->iov[1].iov_base = ntlmssp_blob;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1437) sess_data->iov[1].iov_len = blob_length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1438)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1439) rc = SMB2_sess_sendreceive(sess_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1440) rsp = (struct smb2_sess_setup_rsp *)sess_data->iov[0].iov_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1441)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1442) /* If true, rc here is expected and not an error */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1443) if (sess_data->buf0_type != CIFS_NO_BUFFER &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1444) rsp->sync_hdr.Status == STATUS_MORE_PROCESSING_REQUIRED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1445) rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1446)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1447) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1448) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1449)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1450) if (offsetof(struct smb2_sess_setup_rsp, Buffer) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1451) le16_to_cpu(rsp->SecurityBufferOffset)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1452) cifs_dbg(VFS, "Invalid security buffer offset %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1453) le16_to_cpu(rsp->SecurityBufferOffset));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1454) rc = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1455) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1456) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1457) rc = decode_ntlmssp_challenge(rsp->Buffer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1458) le16_to_cpu(rsp->SecurityBufferLength), ses);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1459) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1460) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1461)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1462) cifs_dbg(FYI, "rawntlmssp session setup challenge phase\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1463)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1464) /* keep existing ses id and flags if binding */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1465) if (!ses->binding) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1466) ses->Suid = rsp->sync_hdr.SessionId;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1467) ses->session_flags = le16_to_cpu(rsp->SessionFlags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1468) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1469)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1470) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1471) kfree(ntlmssp_blob);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1472) SMB2_sess_free_buffer(sess_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1473) if (!rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1474) sess_data->result = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1475) sess_data->func = SMB2_sess_auth_rawntlmssp_authenticate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1476) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1477) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1478) out_err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1479) kfree(ses->ntlmssp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1480) ses->ntlmssp = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1481) sess_data->result = rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1482) sess_data->func = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1483) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1484)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1485) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1486) SMB2_sess_auth_rawntlmssp_authenticate(struct SMB2_sess_data *sess_data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1487) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1488) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1489) struct cifs_ses *ses = sess_data->ses;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1490) struct smb2_sess_setup_req *req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1491) struct smb2_sess_setup_rsp *rsp = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1492) unsigned char *ntlmssp_blob = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1493) bool use_spnego = false; /* else use raw ntlmssp */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1494) u16 blob_length = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1495)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1496) rc = SMB2_sess_alloc_buffer(sess_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1497) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1498) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1499)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1500) req = (struct smb2_sess_setup_req *) sess_data->iov[0].iov_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1501) req->sync_hdr.SessionId = ses->Suid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1502)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1503) rc = build_ntlmssp_auth_blob(&ntlmssp_blob, &blob_length, ses,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1504) sess_data->nls_cp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1505) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1506) cifs_dbg(FYI, "build_ntlmssp_auth_blob failed %d\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1507) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1508) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1509)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1510) if (use_spnego) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1511) /* BB eventually need to add this */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1512) cifs_dbg(VFS, "spnego not supported for SMB2 yet\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1513) rc = -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1514) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1515) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1516) sess_data->iov[1].iov_base = ntlmssp_blob;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1517) sess_data->iov[1].iov_len = blob_length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1518)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1519) rc = SMB2_sess_sendreceive(sess_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1520) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1521) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1522)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1523) rsp = (struct smb2_sess_setup_rsp *)sess_data->iov[0].iov_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1524)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1525) /* keep existing ses id and flags if binding */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1526) if (!ses->binding) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1527) ses->Suid = rsp->sync_hdr.SessionId;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1528) ses->session_flags = le16_to_cpu(rsp->SessionFlags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1529) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1530)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1531) rc = SMB2_sess_establish_session(sess_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1532) #ifdef CONFIG_CIFS_DEBUG_DUMP_KEYS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1533) if (ses->server->dialect < SMB30_PROT_ID) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1534) cifs_dbg(VFS, "%s: dumping generated SMB2 session keys\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1535) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1536) * The session id is opaque in terms of endianness, so we can't
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1537) * print it as a long long. we dump it as we got it on the wire
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1538) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1539) cifs_dbg(VFS, "Session Id %*ph\n", (int)sizeof(ses->Suid),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1540) &ses->Suid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1541) cifs_dbg(VFS, "Session Key %*ph\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1542) SMB2_NTLMV2_SESSKEY_SIZE, ses->auth_key.response);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1543) cifs_dbg(VFS, "Signing Key %*ph\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1544) SMB3_SIGN_KEY_SIZE, ses->auth_key.response);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1545) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1546) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1547) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1548) kfree(ntlmssp_blob);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1549) SMB2_sess_free_buffer(sess_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1550) kfree(ses->ntlmssp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1551) ses->ntlmssp = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1552) sess_data->result = rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1553) sess_data->func = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1554) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1555)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1556) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1557) SMB2_select_sec(struct cifs_ses *ses, struct SMB2_sess_data *sess_data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1558) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1559) int type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1560)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1561) type = smb2_select_sectype(cifs_ses_server(ses), ses->sectype);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1562) cifs_dbg(FYI, "sess setup type %d\n", type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1563) if (type == Unspecified) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1564) cifs_dbg(VFS, "Unable to select appropriate authentication method!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1565) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1566) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1567)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1568) switch (type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1569) case Kerberos:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1570) sess_data->func = SMB2_auth_kerberos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1571) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1572) case RawNTLMSSP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1573) sess_data->func = SMB2_sess_auth_rawntlmssp_negotiate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1574) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1575) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1576) cifs_dbg(VFS, "secType %d not supported!\n", type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1577) return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1578) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1579)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1580) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1581) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1582)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1583) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1584) SMB2_sess_setup(const unsigned int xid, struct cifs_ses *ses,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1585) const struct nls_table *nls_cp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1586) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1587) int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1588) struct TCP_Server_Info *server = cifs_ses_server(ses);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1589) struct SMB2_sess_data *sess_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1590)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1591) cifs_dbg(FYI, "Session Setup\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1592)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1593) if (!server) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1594) WARN(1, "%s: server is NULL!\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1595) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1596) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1597)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1598) sess_data = kzalloc(sizeof(struct SMB2_sess_data), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1599) if (!sess_data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1600) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1601)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1602) rc = SMB2_select_sec(ses, sess_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1603) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1604) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1605) sess_data->xid = xid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1606) sess_data->ses = ses;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1607) sess_data->buf0_type = CIFS_NO_BUFFER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1608) sess_data->nls_cp = (struct nls_table *) nls_cp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1609) sess_data->previous_session = ses->Suid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1610)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1611) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1612) * Initialize the session hash with the server one.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1613) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1614) memcpy(ses->preauth_sha_hash, server->preauth_sha_hash,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1615) SMB2_PREAUTH_HASH_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1616)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1617) while (sess_data->func)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1618) sess_data->func(sess_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1619)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1620) if ((ses->session_flags & SMB2_SESSION_FLAG_IS_GUEST) && (ses->sign))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1621) cifs_server_dbg(VFS, "signing requested but authenticated as guest\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1622) rc = sess_data->result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1623) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1624) kfree(sess_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1625) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1626) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1627)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1628) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1629) SMB2_logoff(const unsigned int xid, struct cifs_ses *ses)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1630) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1631) struct smb_rqst rqst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1632) struct smb2_logoff_req *req; /* response is also trivial struct */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1633) int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1634) struct TCP_Server_Info *server;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1635) int flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1636) unsigned int total_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1637) struct kvec iov[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1638) struct kvec rsp_iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1639) int resp_buf_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1640)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1641) cifs_dbg(FYI, "disconnect session %p\n", ses);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1642)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1643) if (ses && (ses->server))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1644) server = ses->server;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1645) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1646) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1647)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1648) /* no need to send SMB logoff if uid already closed due to reconnect */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1649) if (ses->need_reconnect)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1650) goto smb2_session_already_dead;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1651)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1652) rc = smb2_plain_req_init(SMB2_LOGOFF, NULL, ses->server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1653) (void **) &req, &total_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1654) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1655) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1656)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1657) /* since no tcon, smb2_init can not do this, so do here */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1658) req->sync_hdr.SessionId = ses->Suid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1659)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1660) if (ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1661) flags |= CIFS_TRANSFORM_REQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1662) else if (server->sign)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1663) req->sync_hdr.Flags |= SMB2_FLAGS_SIGNED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1664)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1665) flags |= CIFS_NO_RSP_BUF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1666)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1667) iov[0].iov_base = (char *)req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1668) iov[0].iov_len = total_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1669)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1670) memset(&rqst, 0, sizeof(struct smb_rqst));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1671) rqst.rq_iov = iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1672) rqst.rq_nvec = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1673)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1674) rc = cifs_send_recv(xid, ses, ses->server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1675) &rqst, &resp_buf_type, flags, &rsp_iov);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1676) cifs_small_buf_release(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1677) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1678) * No tcon so can't do
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1679) * cifs_stats_inc(&tcon->stats.smb2_stats.smb2_com_fail[SMB2...]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1680) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1681)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1682) smb2_session_already_dead:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1683) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1684) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1685)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1686) static inline void cifs_stats_fail_inc(struct cifs_tcon *tcon, uint16_t code)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1687) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1688) cifs_stats_inc(&tcon->stats.smb2_stats.smb2_com_failed[code]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1689) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1690)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1691) #define MAX_SHARENAME_LENGTH (255 /* server */ + 80 /* share */ + 1 /* NULL */)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1692)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1693) /* These are similar values to what Windows uses */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1694) static inline void init_copy_chunk_defaults(struct cifs_tcon *tcon)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1695) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1696) tcon->max_chunks = 256;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1697) tcon->max_bytes_chunk = 1048576;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1698) tcon->max_bytes_copy = 16777216;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1699) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1700)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1701) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1702) SMB2_tcon(const unsigned int xid, struct cifs_ses *ses, const char *tree,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1703) struct cifs_tcon *tcon, const struct nls_table *cp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1704) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1705) struct smb_rqst rqst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1706) struct smb2_tree_connect_req *req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1707) struct smb2_tree_connect_rsp *rsp = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1708) struct kvec iov[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1709) struct kvec rsp_iov = { NULL, 0 };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1710) int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1711) int resp_buftype;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1712) int unc_path_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1713) __le16 *unc_path = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1714) int flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1715) unsigned int total_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1716) struct TCP_Server_Info *server;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1717)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1718) /* always use master channel */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1719) server = ses->server;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1720)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1721) cifs_dbg(FYI, "TCON\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1722)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1723) if (!server || !tree)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1724) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1725)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1726) unc_path = kmalloc(MAX_SHARENAME_LENGTH * 2, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1727) if (unc_path == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1728) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1729)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1730) unc_path_len = cifs_strtoUTF16(unc_path, tree, strlen(tree), cp) + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1731) unc_path_len *= 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1732) if (unc_path_len < 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1733) kfree(unc_path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1734) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1735) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1736)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1737) /* SMB2 TREE_CONNECT request must be called with TreeId == 0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1738) tcon->tid = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1739) atomic_set(&tcon->num_remote_opens, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1740) rc = smb2_plain_req_init(SMB2_TREE_CONNECT, tcon, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1741) (void **) &req, &total_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1742) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1743) kfree(unc_path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1744) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1745) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1746)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1747) if (smb3_encryption_required(tcon))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1748) flags |= CIFS_TRANSFORM_REQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1749)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1750) iov[0].iov_base = (char *)req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1751) /* 1 for pad */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1752) iov[0].iov_len = total_len - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1753)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1754) /* Testing shows that buffer offset must be at location of Buffer[0] */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1755) req->PathOffset = cpu_to_le16(sizeof(struct smb2_tree_connect_req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1756) - 1 /* pad */);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1757) req->PathLength = cpu_to_le16(unc_path_len - 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1758) iov[1].iov_base = unc_path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1759) iov[1].iov_len = unc_path_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1760)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1761) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1762) * 3.11 tcon req must be signed if not encrypted. See MS-SMB2 3.2.4.1.1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1763) * unless it is guest or anonymous user. See MS-SMB2 3.2.5.3.1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1764) * (Samba servers don't always set the flag so also check if null user)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1765) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1766) if ((server->dialect == SMB311_PROT_ID) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1767) !smb3_encryption_required(tcon) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1768) !(ses->session_flags &
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1769) (SMB2_SESSION_FLAG_IS_GUEST|SMB2_SESSION_FLAG_IS_NULL)) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1770) ((ses->user_name != NULL) || (ses->sectype == Kerberos)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1771) req->sync_hdr.Flags |= SMB2_FLAGS_SIGNED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1772)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1773) memset(&rqst, 0, sizeof(struct smb_rqst));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1774) rqst.rq_iov = iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1775) rqst.rq_nvec = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1776)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1777) /* Need 64 for max size write so ask for more in case not there yet */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1778) req->sync_hdr.CreditRequest = cpu_to_le16(64);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1779)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1780) rc = cifs_send_recv(xid, ses, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1781) &rqst, &resp_buftype, flags, &rsp_iov);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1782) cifs_small_buf_release(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1783) rsp = (struct smb2_tree_connect_rsp *)rsp_iov.iov_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1784) trace_smb3_tcon(xid, tcon->tid, ses->Suid, tree, rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1785) if (rc != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1786) if (tcon) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1787) cifs_stats_fail_inc(tcon, SMB2_TREE_CONNECT_HE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1788) tcon->need_reconnect = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1789) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1790) goto tcon_error_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1791) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1792)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1793) switch (rsp->ShareType) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1794) case SMB2_SHARE_TYPE_DISK:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1795) cifs_dbg(FYI, "connection to disk share\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1796) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1797) case SMB2_SHARE_TYPE_PIPE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1798) tcon->pipe = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1799) cifs_dbg(FYI, "connection to pipe share\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1800) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1801) case SMB2_SHARE_TYPE_PRINT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1802) tcon->print = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1803) cifs_dbg(FYI, "connection to printer\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1804) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1805) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1806) cifs_server_dbg(VFS, "unknown share type %d\n", rsp->ShareType);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1807) rc = -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1808) goto tcon_error_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1809) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1810)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1811) tcon->share_flags = le32_to_cpu(rsp->ShareFlags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1812) tcon->capabilities = rsp->Capabilities; /* we keep caps little endian */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1813) tcon->maximal_access = le32_to_cpu(rsp->MaximalAccess);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1814) tcon->tidStatus = CifsGood;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1815) tcon->need_reconnect = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1816) tcon->tid = rsp->sync_hdr.TreeId;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1817) strlcpy(tcon->treeName, tree, sizeof(tcon->treeName));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1818)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1819) if ((rsp->Capabilities & SMB2_SHARE_CAP_DFS) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1820) ((tcon->share_flags & SHI1005_FLAGS_DFS) == 0))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1821) cifs_tcon_dbg(VFS, "DFS capability contradicts DFS flag\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1822)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1823) if (tcon->seal &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1824) !(server->capabilities & SMB2_GLOBAL_CAP_ENCRYPTION))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1825) cifs_tcon_dbg(VFS, "Encryption is requested but not supported\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1826)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1827) init_copy_chunk_defaults(tcon);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1828) if (server->ops->validate_negotiate)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1829) rc = server->ops->validate_negotiate(xid, tcon);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1830) tcon_exit:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1831)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1832) free_rsp_buf(resp_buftype, rsp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1833) kfree(unc_path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1834) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1835)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1836) tcon_error_exit:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1837) if (rsp && rsp->sync_hdr.Status == STATUS_BAD_NETWORK_NAME) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1838) cifs_tcon_dbg(VFS, "BAD_NETWORK_NAME: %s\n", tree);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1839) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1840) goto tcon_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1841) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1842)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1843) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1844) SMB2_tdis(const unsigned int xid, struct cifs_tcon *tcon)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1845) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1846) struct smb_rqst rqst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1847) struct smb2_tree_disconnect_req *req; /* response is trivial */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1848) int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1849) struct cifs_ses *ses = tcon->ses;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1850) int flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1851) unsigned int total_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1852) struct kvec iov[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1853) struct kvec rsp_iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1854) int resp_buf_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1855)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1856) cifs_dbg(FYI, "Tree Disconnect\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1857)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1858) if (!ses || !(ses->server))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1859) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1860)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1861) if ((tcon->need_reconnect) || (tcon->ses->need_reconnect))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1862) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1863)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1864) close_shroot_lease(&tcon->crfid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1865)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1866) rc = smb2_plain_req_init(SMB2_TREE_DISCONNECT, tcon, ses->server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1867) (void **) &req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1868) &total_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1869) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1870) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1871)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1872) if (smb3_encryption_required(tcon))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1873) flags |= CIFS_TRANSFORM_REQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1874)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1875) flags |= CIFS_NO_RSP_BUF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1876)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1877) iov[0].iov_base = (char *)req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1878) iov[0].iov_len = total_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1879)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1880) memset(&rqst, 0, sizeof(struct smb_rqst));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1881) rqst.rq_iov = iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1882) rqst.rq_nvec = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1883)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1884) rc = cifs_send_recv(xid, ses, ses->server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1885) &rqst, &resp_buf_type, flags, &rsp_iov);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1886) cifs_small_buf_release(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1887) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1888) cifs_stats_fail_inc(tcon, SMB2_TREE_DISCONNECT_HE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1889)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1890) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1891) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1892)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1893)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1894) static struct create_durable *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1895) create_durable_buf(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1896) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1897) struct create_durable *buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1898)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1899) buf = kzalloc(sizeof(struct create_durable), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1900) if (!buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1901) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1902)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1903) buf->ccontext.DataOffset = cpu_to_le16(offsetof
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1904) (struct create_durable, Data));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1905) buf->ccontext.DataLength = cpu_to_le32(16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1906) buf->ccontext.NameOffset = cpu_to_le16(offsetof
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1907) (struct create_durable, Name));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1908) buf->ccontext.NameLength = cpu_to_le16(4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1909) /* SMB2_CREATE_DURABLE_HANDLE_REQUEST is "DHnQ" */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1910) buf->Name[0] = 'D';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1911) buf->Name[1] = 'H';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1912) buf->Name[2] = 'n';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1913) buf->Name[3] = 'Q';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1914) return buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1915) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1916)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1917) static struct create_durable *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1918) create_reconnect_durable_buf(struct cifs_fid *fid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1919) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1920) struct create_durable *buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1921)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1922) buf = kzalloc(sizeof(struct create_durable), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1923) if (!buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1924) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1925)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1926) buf->ccontext.DataOffset = cpu_to_le16(offsetof
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1927) (struct create_durable, Data));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1928) buf->ccontext.DataLength = cpu_to_le32(16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1929) buf->ccontext.NameOffset = cpu_to_le16(offsetof
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1930) (struct create_durable, Name));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1931) buf->ccontext.NameLength = cpu_to_le16(4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1932) buf->Data.Fid.PersistentFileId = fid->persistent_fid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1933) buf->Data.Fid.VolatileFileId = fid->volatile_fid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1934) /* SMB2_CREATE_DURABLE_HANDLE_RECONNECT is "DHnC" */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1935) buf->Name[0] = 'D';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1936) buf->Name[1] = 'H';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1937) buf->Name[2] = 'n';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1938) buf->Name[3] = 'C';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1939) return buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1940) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1941)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1942) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1943) parse_query_id_ctxt(struct create_context *cc, struct smb2_file_all_info *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1944) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1945) struct create_on_disk_id *pdisk_id = (struct create_on_disk_id *)cc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1946)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1947) cifs_dbg(FYI, "parse query id context 0x%llx 0x%llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1948) pdisk_id->DiskFileId, pdisk_id->VolumeId);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1949) buf->IndexNumber = pdisk_id->DiskFileId;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1950) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1951)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1952) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1953) parse_posix_ctxt(struct create_context *cc, struct smb2_file_all_info *info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1954) struct create_posix_rsp *posix)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1955) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1956) int sid_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1957) u8 *beg = (u8 *)cc + le16_to_cpu(cc->DataOffset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1958) u8 *end = beg + le32_to_cpu(cc->DataLength);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1959) u8 *sid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1960)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1961) memset(posix, 0, sizeof(*posix));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1962)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1963) posix->nlink = le32_to_cpu(*(__le32 *)(beg + 0));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1964) posix->reparse_tag = le32_to_cpu(*(__le32 *)(beg + 4));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1965) posix->mode = le32_to_cpu(*(__le32 *)(beg + 8));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1966)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1967) sid = beg + 12;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1968) sid_len = posix_info_sid_size(sid, end);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1969) if (sid_len < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1970) cifs_dbg(VFS, "bad owner sid in posix create response\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1971) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1972) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1973) memcpy(&posix->owner, sid, sid_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1974)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1975) sid = sid + sid_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1976) sid_len = posix_info_sid_size(sid, end);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1977) if (sid_len < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1978) cifs_dbg(VFS, "bad group sid in posix create response\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1979) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1980) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1981) memcpy(&posix->group, sid, sid_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1982)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1983) cifs_dbg(FYI, "nlink=%d mode=%o reparse_tag=%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1984) posix->nlink, posix->mode, posix->reparse_tag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1985) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1986)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1987) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1988) smb2_parse_contexts(struct TCP_Server_Info *server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1989) struct smb2_create_rsp *rsp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1990) unsigned int *epoch, char *lease_key, __u8 *oplock,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1991) struct smb2_file_all_info *buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1992) struct create_posix_rsp *posix)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1993) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1994) char *data_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1995) struct create_context *cc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1996) unsigned int next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1997) unsigned int remaining;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1998) char *name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1999) static const char smb3_create_tag_posix[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2000) 0x93, 0xAD, 0x25, 0x50, 0x9C,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2001) 0xB4, 0x11, 0xE7, 0xB4, 0x23, 0x83,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2002) 0xDE, 0x96, 0x8B, 0xCD, 0x7C
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2003) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2004)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2005) *oplock = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2006) data_offset = (char *)rsp + le32_to_cpu(rsp->CreateContextsOffset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2007) remaining = le32_to_cpu(rsp->CreateContextsLength);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2008) cc = (struct create_context *)data_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2009)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2010) /* Initialize inode number to 0 in case no valid data in qfid context */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2011) if (buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2012) buf->IndexNumber = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2013)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2014) while (remaining >= sizeof(struct create_context)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2015) name = le16_to_cpu(cc->NameOffset) + (char *)cc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2016) if (le16_to_cpu(cc->NameLength) == 4 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2017) strncmp(name, SMB2_CREATE_REQUEST_LEASE, 4) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2018) *oplock = server->ops->parse_lease_buf(cc, epoch,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2019) lease_key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2020) else if (buf && (le16_to_cpu(cc->NameLength) == 4) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2021) strncmp(name, SMB2_CREATE_QUERY_ON_DISK_ID, 4) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2022) parse_query_id_ctxt(cc, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2023) else if ((le16_to_cpu(cc->NameLength) == 16)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2024) if (posix &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2025) memcmp(name, smb3_create_tag_posix, 16) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2026) parse_posix_ctxt(cc, buf, posix);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2027) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2028) /* else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2029) cifs_dbg(FYI, "Context not matched with len %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2030) le16_to_cpu(cc->NameLength));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2031) cifs_dump_mem("Cctxt name: ", name, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2032) } */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2033)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2034) next = le32_to_cpu(cc->Next);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2035) if (!next)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2036) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2037) remaining -= next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2038) cc = (struct create_context *)((char *)cc + next);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2039) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2040)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2041) if (rsp->OplockLevel != SMB2_OPLOCK_LEVEL_LEASE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2042) *oplock = rsp->OplockLevel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2043)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2044) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2045) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2046)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2047) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2048) add_lease_context(struct TCP_Server_Info *server, struct kvec *iov,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2049) unsigned int *num_iovec, u8 *lease_key, __u8 *oplock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2050) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2051) struct smb2_create_req *req = iov[0].iov_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2052) unsigned int num = *num_iovec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2053)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2054) iov[num].iov_base = server->ops->create_lease_buf(lease_key, *oplock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2055) if (iov[num].iov_base == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2056) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2057) iov[num].iov_len = server->vals->create_lease_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2058) req->RequestedOplockLevel = SMB2_OPLOCK_LEVEL_LEASE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2059) if (!req->CreateContextsOffset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2060) req->CreateContextsOffset = cpu_to_le32(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2061) sizeof(struct smb2_create_req) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2062) iov[num - 1].iov_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2063) le32_add_cpu(&req->CreateContextsLength,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2064) server->vals->create_lease_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2065) *num_iovec = num + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2066) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2067) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2068)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2069) static struct create_durable_v2 *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2070) create_durable_v2_buf(struct cifs_open_parms *oparms)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2071) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2072) struct cifs_fid *pfid = oparms->fid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2073) struct create_durable_v2 *buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2074)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2075) buf = kzalloc(sizeof(struct create_durable_v2), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2076) if (!buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2077) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2078)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2079) buf->ccontext.DataOffset = cpu_to_le16(offsetof
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2080) (struct create_durable_v2, dcontext));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2081) buf->ccontext.DataLength = cpu_to_le32(sizeof(struct durable_context_v2));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2082) buf->ccontext.NameOffset = cpu_to_le16(offsetof
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2083) (struct create_durable_v2, Name));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2084) buf->ccontext.NameLength = cpu_to_le16(4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2085)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2086) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2087) * NB: Handle timeout defaults to 0, which allows server to choose
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2088) * (most servers default to 120 seconds) and most clients default to 0.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2089) * This can be overridden at mount ("handletimeout=") if the user wants
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2090) * a different persistent (or resilient) handle timeout for all opens
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2091) * opens on a particular SMB3 mount.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2092) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2093) buf->dcontext.Timeout = cpu_to_le32(oparms->tcon->handle_timeout);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2094) buf->dcontext.Flags = cpu_to_le32(SMB2_DHANDLE_FLAG_PERSISTENT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2095) generate_random_uuid(buf->dcontext.CreateGuid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2096) memcpy(pfid->create_guid, buf->dcontext.CreateGuid, 16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2097)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2098) /* SMB2_CREATE_DURABLE_HANDLE_REQUEST is "DH2Q" */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2099) buf->Name[0] = 'D';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2100) buf->Name[1] = 'H';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2101) buf->Name[2] = '2';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2102) buf->Name[3] = 'Q';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2103) return buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2104) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2106) static struct create_durable_handle_reconnect_v2 *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2107) create_reconnect_durable_v2_buf(struct cifs_fid *fid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2108) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2109) struct create_durable_handle_reconnect_v2 *buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2111) buf = kzalloc(sizeof(struct create_durable_handle_reconnect_v2),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2112) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2113) if (!buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2114) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2116) buf->ccontext.DataOffset =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2117) cpu_to_le16(offsetof(struct create_durable_handle_reconnect_v2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2118) dcontext));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2119) buf->ccontext.DataLength =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2120) cpu_to_le32(sizeof(struct durable_reconnect_context_v2));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2121) buf->ccontext.NameOffset =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2122) cpu_to_le16(offsetof(struct create_durable_handle_reconnect_v2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2123) Name));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2124) buf->ccontext.NameLength = cpu_to_le16(4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2126) buf->dcontext.Fid.PersistentFileId = fid->persistent_fid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2127) buf->dcontext.Fid.VolatileFileId = fid->volatile_fid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2128) buf->dcontext.Flags = cpu_to_le32(SMB2_DHANDLE_FLAG_PERSISTENT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2129) memcpy(buf->dcontext.CreateGuid, fid->create_guid, 16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2131) /* SMB2_CREATE_DURABLE_HANDLE_RECONNECT_V2 is "DH2C" */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2132) buf->Name[0] = 'D';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2133) buf->Name[1] = 'H';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2134) buf->Name[2] = '2';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2135) buf->Name[3] = 'C';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2136) return buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2137) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2139) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2140) add_durable_v2_context(struct kvec *iov, unsigned int *num_iovec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2141) struct cifs_open_parms *oparms)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2142) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2143) struct smb2_create_req *req = iov[0].iov_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2144) unsigned int num = *num_iovec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2146) iov[num].iov_base = create_durable_v2_buf(oparms);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2147) if (iov[num].iov_base == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2148) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2149) iov[num].iov_len = sizeof(struct create_durable_v2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2150) if (!req->CreateContextsOffset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2151) req->CreateContextsOffset =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2152) cpu_to_le32(sizeof(struct smb2_create_req) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2153) iov[1].iov_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2154) le32_add_cpu(&req->CreateContextsLength, sizeof(struct create_durable_v2));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2155) *num_iovec = num + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2156) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2157) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2159) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2160) add_durable_reconnect_v2_context(struct kvec *iov, unsigned int *num_iovec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2161) struct cifs_open_parms *oparms)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2162) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2163) struct smb2_create_req *req = iov[0].iov_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2164) unsigned int num = *num_iovec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2166) /* indicate that we don't need to relock the file */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2167) oparms->reconnect = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2169) iov[num].iov_base = create_reconnect_durable_v2_buf(oparms->fid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2170) if (iov[num].iov_base == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2171) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2172) iov[num].iov_len = sizeof(struct create_durable_handle_reconnect_v2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2173) if (!req->CreateContextsOffset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2174) req->CreateContextsOffset =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2175) cpu_to_le32(sizeof(struct smb2_create_req) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2176) iov[1].iov_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2177) le32_add_cpu(&req->CreateContextsLength,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2178) sizeof(struct create_durable_handle_reconnect_v2));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2179) *num_iovec = num + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2180) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2181) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2183) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2184) add_durable_context(struct kvec *iov, unsigned int *num_iovec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2185) struct cifs_open_parms *oparms, bool use_persistent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2186) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2187) struct smb2_create_req *req = iov[0].iov_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2188) unsigned int num = *num_iovec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2190) if (use_persistent) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2191) if (oparms->reconnect)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2192) return add_durable_reconnect_v2_context(iov, num_iovec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2193) oparms);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2194) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2195) return add_durable_v2_context(iov, num_iovec, oparms);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2196) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2198) if (oparms->reconnect) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2199) iov[num].iov_base = create_reconnect_durable_buf(oparms->fid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2200) /* indicate that we don't need to relock the file */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2201) oparms->reconnect = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2202) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2203) iov[num].iov_base = create_durable_buf();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2204) if (iov[num].iov_base == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2205) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2206) iov[num].iov_len = sizeof(struct create_durable);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2207) if (!req->CreateContextsOffset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2208) req->CreateContextsOffset =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2209) cpu_to_le32(sizeof(struct smb2_create_req) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2210) iov[1].iov_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2211) le32_add_cpu(&req->CreateContextsLength, sizeof(struct create_durable));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2212) *num_iovec = num + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2213) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2214) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2216) /* See MS-SMB2 2.2.13.2.7 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2217) static struct crt_twarp_ctxt *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2218) create_twarp_buf(__u64 timewarp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2219) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2220) struct crt_twarp_ctxt *buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2222) buf = kzalloc(sizeof(struct crt_twarp_ctxt), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2223) if (!buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2224) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2226) buf->ccontext.DataOffset = cpu_to_le16(offsetof
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2227) (struct crt_twarp_ctxt, Timestamp));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2228) buf->ccontext.DataLength = cpu_to_le32(8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2229) buf->ccontext.NameOffset = cpu_to_le16(offsetof
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2230) (struct crt_twarp_ctxt, Name));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2231) buf->ccontext.NameLength = cpu_to_le16(4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2232) /* SMB2_CREATE_TIMEWARP_TOKEN is "TWrp" */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2233) buf->Name[0] = 'T';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2234) buf->Name[1] = 'W';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2235) buf->Name[2] = 'r';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2236) buf->Name[3] = 'p';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2237) buf->Timestamp = cpu_to_le64(timewarp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2238) return buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2239) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2241) /* See MS-SMB2 2.2.13.2.7 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2242) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2243) add_twarp_context(struct kvec *iov, unsigned int *num_iovec, __u64 timewarp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2244) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2245) struct smb2_create_req *req = iov[0].iov_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2246) unsigned int num = *num_iovec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2247)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2248) iov[num].iov_base = create_twarp_buf(timewarp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2249) if (iov[num].iov_base == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2250) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2251) iov[num].iov_len = sizeof(struct crt_twarp_ctxt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2252) if (!req->CreateContextsOffset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2253) req->CreateContextsOffset = cpu_to_le32(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2254) sizeof(struct smb2_create_req) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2255) iov[num - 1].iov_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2256) le32_add_cpu(&req->CreateContextsLength, sizeof(struct crt_twarp_ctxt));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2257) *num_iovec = num + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2258) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2259) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2261) /* See See http://technet.microsoft.com/en-us/library/hh509017(v=ws.10).aspx */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2262) static void setup_owner_group_sids(char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2263) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2264) struct owner_group_sids *sids = (struct owner_group_sids *)buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2266) /* Populate the user ownership fields S-1-5-88-1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2267) sids->owner.Revision = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2268) sids->owner.NumAuth = 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2269) sids->owner.Authority[5] = 5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2270) sids->owner.SubAuthorities[0] = cpu_to_le32(88);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2271) sids->owner.SubAuthorities[1] = cpu_to_le32(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2272) sids->owner.SubAuthorities[2] = cpu_to_le32(current_fsuid().val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2273)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2274) /* Populate the group ownership fields S-1-5-88-2 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2275) sids->group.Revision = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2276) sids->group.NumAuth = 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2277) sids->group.Authority[5] = 5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2278) sids->group.SubAuthorities[0] = cpu_to_le32(88);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2279) sids->group.SubAuthorities[1] = cpu_to_le32(2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2280) sids->group.SubAuthorities[2] = cpu_to_le32(current_fsgid().val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2281)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2282) cifs_dbg(FYI, "owner S-1-5-88-1-%d, group S-1-5-88-2-%d\n", current_fsuid().val, current_fsgid().val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2283) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2284)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2285) /* See MS-SMB2 2.2.13.2.2 and MS-DTYP 2.4.6 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2286) static struct crt_sd_ctxt *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2287) create_sd_buf(umode_t mode, bool set_owner, unsigned int *len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2288) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2289) struct crt_sd_ctxt *buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2290) __u8 *ptr, *aclptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2291) unsigned int acelen, acl_size, ace_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2292) unsigned int owner_offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2293) unsigned int group_offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2294) struct smb3_acl acl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2296) *len = roundup(sizeof(struct crt_sd_ctxt) + (sizeof(struct cifs_ace) * 4), 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2298) if (set_owner) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2299) /* sizeof(struct owner_group_sids) is already multiple of 8 so no need to round */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2300) *len += sizeof(struct owner_group_sids);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2301) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2303) buf = kzalloc(*len, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2304) if (buf == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2305) return buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2306)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2307) ptr = (__u8 *)&buf[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2308) if (set_owner) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2309) /* offset fields are from beginning of security descriptor not of create context */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2310) owner_offset = ptr - (__u8 *)&buf->sd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2311) buf->sd.OffsetOwner = cpu_to_le32(owner_offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2312) group_offset = owner_offset + offsetof(struct owner_group_sids, group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2313) buf->sd.OffsetGroup = cpu_to_le32(group_offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2314)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2315) setup_owner_group_sids(ptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2316) ptr += sizeof(struct owner_group_sids);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2317) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2318) buf->sd.OffsetOwner = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2319) buf->sd.OffsetGroup = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2320) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2321)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2322) buf->ccontext.DataOffset = cpu_to_le16(offsetof(struct crt_sd_ctxt, sd));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2323) buf->ccontext.NameOffset = cpu_to_le16(offsetof(struct crt_sd_ctxt, Name));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2324) buf->ccontext.NameLength = cpu_to_le16(4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2325) /* SMB2_CREATE_SD_BUFFER_TOKEN is "SecD" */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2326) buf->Name[0] = 'S';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2327) buf->Name[1] = 'e';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2328) buf->Name[2] = 'c';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2329) buf->Name[3] = 'D';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2330) buf->sd.Revision = 1; /* Must be one see MS-DTYP 2.4.6 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2331)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2332) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2333) * ACL is "self relative" ie ACL is stored in contiguous block of memory
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2334) * and "DP" ie the DACL is present
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2335) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2336) buf->sd.Control = cpu_to_le16(ACL_CONTROL_SR | ACL_CONTROL_DP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2337)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2338) /* offset owner, group and Sbz1 and SACL are all zero */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2339) buf->sd.OffsetDacl = cpu_to_le32(ptr - (__u8 *)&buf->sd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2340) /* Ship the ACL for now. we will copy it into buf later. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2341) aclptr = ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2342) ptr += sizeof(struct smb3_acl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2343)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2344) /* create one ACE to hold the mode embedded in reserved special SID */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2345) acelen = setup_special_mode_ACE((struct cifs_ace *)ptr, (__u64)mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2346) ptr += acelen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2347) acl_size = acelen + sizeof(struct smb3_acl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2348) ace_count = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2349)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2350) if (set_owner) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2351) /* we do not need to reallocate buffer to add the two more ACEs. plenty of space */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2352) acelen = setup_special_user_owner_ACE((struct cifs_ace *)ptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2353) ptr += acelen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2354) acl_size += acelen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2355) ace_count += 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2356) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2357)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2358) /* and one more ACE to allow access for authenticated users */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2359) acelen = setup_authusers_ACE((struct cifs_ace *)ptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2360) ptr += acelen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2361) acl_size += acelen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2362) ace_count += 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2363)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2364) acl.AclRevision = ACL_REVISION; /* See 2.4.4.1 of MS-DTYP */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2365) acl.AclSize = cpu_to_le16(acl_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2366) acl.AceCount = cpu_to_le16(ace_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2367) memcpy(aclptr, &acl, sizeof(struct smb3_acl));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2368)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2369) buf->ccontext.DataLength = cpu_to_le32(ptr - (__u8 *)&buf->sd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2370) *len = roundup(ptr - (__u8 *)buf, 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2371)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2372) return buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2373) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2374)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2375) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2376) add_sd_context(struct kvec *iov, unsigned int *num_iovec, umode_t mode, bool set_owner)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2377) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2378) struct smb2_create_req *req = iov[0].iov_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2379) unsigned int num = *num_iovec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2380) unsigned int len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2381)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2382) iov[num].iov_base = create_sd_buf(mode, set_owner, &len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2383) if (iov[num].iov_base == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2384) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2385) iov[num].iov_len = len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2386) if (!req->CreateContextsOffset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2387) req->CreateContextsOffset = cpu_to_le32(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2388) sizeof(struct smb2_create_req) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2389) iov[num - 1].iov_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2390) le32_add_cpu(&req->CreateContextsLength, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2391) *num_iovec = num + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2392) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2393) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2394)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2395) static struct crt_query_id_ctxt *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2396) create_query_id_buf(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2397) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2398) struct crt_query_id_ctxt *buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2399)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2400) buf = kzalloc(sizeof(struct crt_query_id_ctxt), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2401) if (!buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2402) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2403)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2404) buf->ccontext.DataOffset = cpu_to_le16(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2405) buf->ccontext.DataLength = cpu_to_le32(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2406) buf->ccontext.NameOffset = cpu_to_le16(offsetof
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2407) (struct crt_query_id_ctxt, Name));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2408) buf->ccontext.NameLength = cpu_to_le16(4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2409) /* SMB2_CREATE_QUERY_ON_DISK_ID is "QFid" */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2410) buf->Name[0] = 'Q';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2411) buf->Name[1] = 'F';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2412) buf->Name[2] = 'i';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2413) buf->Name[3] = 'd';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2414) return buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2415) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2416)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2417) /* See MS-SMB2 2.2.13.2.9 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2418) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2419) add_query_id_context(struct kvec *iov, unsigned int *num_iovec)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2420) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2421) struct smb2_create_req *req = iov[0].iov_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2422) unsigned int num = *num_iovec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2423)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2424) iov[num].iov_base = create_query_id_buf();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2425) if (iov[num].iov_base == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2426) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2427) iov[num].iov_len = sizeof(struct crt_query_id_ctxt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2428) if (!req->CreateContextsOffset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2429) req->CreateContextsOffset = cpu_to_le32(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2430) sizeof(struct smb2_create_req) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2431) iov[num - 1].iov_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2432) le32_add_cpu(&req->CreateContextsLength, sizeof(struct crt_query_id_ctxt));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2433) *num_iovec = num + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2434) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2435) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2436)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2437) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2438) alloc_path_with_tree_prefix(__le16 **out_path, int *out_size, int *out_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2439) const char *treename, const __le16 *path)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2440) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2441) int treename_len, path_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2442) struct nls_table *cp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2443) const __le16 sep[] = {cpu_to_le16('\\'), cpu_to_le16(0x0000)};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2444)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2445) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2446) * skip leading "\\"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2447) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2448) treename_len = strlen(treename);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2449) if (treename_len < 2 || !(treename[0] == '\\' && treename[1] == '\\'))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2450) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2451)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2452) treename += 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2453) treename_len -= 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2454)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2455) path_len = UniStrnlen((wchar_t *)path, PATH_MAX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2456)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2457) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2458) * make room for one path separator between the treename and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2459) * path
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2460) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2461) *out_len = treename_len + 1 + path_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2462)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2463) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2464) * final path needs to be null-terminated UTF16 with a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2465) * size aligned to 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2466) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2467)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2468) *out_size = roundup((*out_len+1)*2, 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2469) *out_path = kzalloc(*out_size, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2470) if (!*out_path)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2471) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2472)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2473) cp = load_nls_default();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2474) cifs_strtoUTF16(*out_path, treename, treename_len, cp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2475) UniStrcat(*out_path, sep);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2476) UniStrcat(*out_path, path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2477) unload_nls(cp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2478)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2479) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2480) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2481)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2482) int smb311_posix_mkdir(const unsigned int xid, struct inode *inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2483) umode_t mode, struct cifs_tcon *tcon,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2484) const char *full_path,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2485) struct cifs_sb_info *cifs_sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2486) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2487) struct smb_rqst rqst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2488) struct smb2_create_req *req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2489) struct smb2_create_rsp *rsp = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2490) struct cifs_ses *ses = tcon->ses;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2491) struct kvec iov[3]; /* make sure at least one for each open context */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2492) struct kvec rsp_iov = {NULL, 0};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2493) int resp_buftype;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2494) int uni_path_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2495) __le16 *copy_path = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2496) int copy_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2497) int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2498) unsigned int n_iov = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2499) __u32 file_attributes = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2500) char *pc_buf = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2501) int flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2502) unsigned int total_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2503) __le16 *utf16_path = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2504) struct TCP_Server_Info *server = cifs_pick_channel(ses);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2505)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2506) cifs_dbg(FYI, "mkdir\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2507)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2508) /* resource #1: path allocation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2509) utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2510) if (!utf16_path)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2511) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2512)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2513) if (!ses || !server) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2514) rc = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2515) goto err_free_path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2516) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2517)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2518) /* resource #2: request */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2519) rc = smb2_plain_req_init(SMB2_CREATE, tcon, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2520) (void **) &req, &total_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2521) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2522) goto err_free_path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2523)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2524)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2525) if (smb3_encryption_required(tcon))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2526) flags |= CIFS_TRANSFORM_REQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2527)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2528) req->ImpersonationLevel = IL_IMPERSONATION;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2529) req->DesiredAccess = cpu_to_le32(FILE_WRITE_ATTRIBUTES);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2530) /* File attributes ignored on open (used in create though) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2531) req->FileAttributes = cpu_to_le32(file_attributes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2532) req->ShareAccess = FILE_SHARE_ALL_LE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2533) req->CreateDisposition = cpu_to_le32(FILE_CREATE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2534) req->CreateOptions = cpu_to_le32(CREATE_NOT_FILE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2535)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2536) iov[0].iov_base = (char *)req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2537) /* -1 since last byte is buf[0] which is sent below (path) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2538) iov[0].iov_len = total_len - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2539)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2540) req->NameOffset = cpu_to_le16(sizeof(struct smb2_create_req));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2541)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2542) /* [MS-SMB2] 2.2.13 NameOffset:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2543) * If SMB2_FLAGS_DFS_OPERATIONS is set in the Flags field of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2544) * the SMB2 header, the file name includes a prefix that will
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2545) * be processed during DFS name normalization as specified in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2546) * section 3.3.5.9. Otherwise, the file name is relative to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2547) * the share that is identified by the TreeId in the SMB2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2548) * header.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2549) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2550) if (tcon->share_flags & SHI1005_FLAGS_DFS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2551) int name_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2552)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2553) req->sync_hdr.Flags |= SMB2_FLAGS_DFS_OPERATIONS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2554) rc = alloc_path_with_tree_prefix(©_path, ©_size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2555) &name_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2556) tcon->treeName, utf16_path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2557) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2558) goto err_free_req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2559)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2560) req->NameLength = cpu_to_le16(name_len * 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2561) uni_path_len = copy_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2562) /* free before overwriting resource */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2563) kfree(utf16_path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2564) utf16_path = copy_path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2565) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2566) uni_path_len = (2 * UniStrnlen((wchar_t *)utf16_path, PATH_MAX)) + 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2567) /* MUST set path len (NameLength) to 0 opening root of share */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2568) req->NameLength = cpu_to_le16(uni_path_len - 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2569) if (uni_path_len % 8 != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2570) copy_size = roundup(uni_path_len, 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2571) copy_path = kzalloc(copy_size, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2572) if (!copy_path) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2573) rc = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2574) goto err_free_req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2575) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2576) memcpy((char *)copy_path, (const char *)utf16_path,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2577) uni_path_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2578) uni_path_len = copy_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2579) /* free before overwriting resource */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2580) kfree(utf16_path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2581) utf16_path = copy_path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2582) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2583) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2584)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2585) iov[1].iov_len = uni_path_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2586) iov[1].iov_base = utf16_path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2587) req->RequestedOplockLevel = SMB2_OPLOCK_LEVEL_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2588)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2589) if (tcon->posix_extensions) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2590) /* resource #3: posix buf */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2591) rc = add_posix_context(iov, &n_iov, mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2592) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2593) goto err_free_req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2594) pc_buf = iov[n_iov-1].iov_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2595) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2596)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2597)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2598) memset(&rqst, 0, sizeof(struct smb_rqst));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2599) rqst.rq_iov = iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2600) rqst.rq_nvec = n_iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2601)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2602) /* no need to inc num_remote_opens because we close it just below */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2603) trace_smb3_posix_mkdir_enter(xid, tcon->tid, ses->Suid, CREATE_NOT_FILE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2604) FILE_WRITE_ATTRIBUTES);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2605) /* resource #4: response buffer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2606) rc = cifs_send_recv(xid, ses, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2607) &rqst, &resp_buftype, flags, &rsp_iov);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2608) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2609) cifs_stats_fail_inc(tcon, SMB2_CREATE_HE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2610) trace_smb3_posix_mkdir_err(xid, tcon->tid, ses->Suid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2611) CREATE_NOT_FILE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2612) FILE_WRITE_ATTRIBUTES, rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2613) goto err_free_rsp_buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2614) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2615)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2616) rsp = (struct smb2_create_rsp *)rsp_iov.iov_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2617) trace_smb3_posix_mkdir_done(xid, rsp->PersistentFileId, tcon->tid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2618) ses->Suid, CREATE_NOT_FILE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2619) FILE_WRITE_ATTRIBUTES);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2620)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2621) SMB2_close(xid, tcon, rsp->PersistentFileId, rsp->VolatileFileId);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2622)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2623) /* Eventually save off posix specific response info and timestaps */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2624)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2625) err_free_rsp_buf:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2626) free_rsp_buf(resp_buftype, rsp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2627) kfree(pc_buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2628) err_free_req:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2629) cifs_small_buf_release(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2630) err_free_path:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2631) kfree(utf16_path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2632) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2633) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2634)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2635) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2636) SMB2_open_init(struct cifs_tcon *tcon, struct TCP_Server_Info *server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2637) struct smb_rqst *rqst, __u8 *oplock,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2638) struct cifs_open_parms *oparms, __le16 *path)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2639) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2640) struct smb2_create_req *req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2641) unsigned int n_iov = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2642) __u32 file_attributes = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2643) int copy_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2644) int uni_path_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2645) unsigned int total_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2646) struct kvec *iov = rqst->rq_iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2647) __le16 *copy_path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2648) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2649)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2650) rc = smb2_plain_req_init(SMB2_CREATE, tcon, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2651) (void **) &req, &total_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2652) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2653) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2654)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2655) iov[0].iov_base = (char *)req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2656) /* -1 since last byte is buf[0] which is sent below (path) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2657) iov[0].iov_len = total_len - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2658)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2659) if (oparms->create_options & CREATE_OPTION_READONLY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2660) file_attributes |= ATTR_READONLY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2661) if (oparms->create_options & CREATE_OPTION_SPECIAL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2662) file_attributes |= ATTR_SYSTEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2663)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2664) req->ImpersonationLevel = IL_IMPERSONATION;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2665) req->DesiredAccess = cpu_to_le32(oparms->desired_access);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2666) /* File attributes ignored on open (used in create though) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2667) req->FileAttributes = cpu_to_le32(file_attributes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2668) req->ShareAccess = FILE_SHARE_ALL_LE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2669)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2670) req->CreateDisposition = cpu_to_le32(oparms->disposition);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2671) req->CreateOptions = cpu_to_le32(oparms->create_options & CREATE_OPTIONS_MASK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2672) req->NameOffset = cpu_to_le16(sizeof(struct smb2_create_req));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2673)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2674) /* [MS-SMB2] 2.2.13 NameOffset:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2675) * If SMB2_FLAGS_DFS_OPERATIONS is set in the Flags field of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2676) * the SMB2 header, the file name includes a prefix that will
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2677) * be processed during DFS name normalization as specified in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2678) * section 3.3.5.9. Otherwise, the file name is relative to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2679) * the share that is identified by the TreeId in the SMB2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2680) * header.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2681) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2682) if (tcon->share_flags & SHI1005_FLAGS_DFS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2683) int name_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2684)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2685) req->sync_hdr.Flags |= SMB2_FLAGS_DFS_OPERATIONS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2686) rc = alloc_path_with_tree_prefix(©_path, ©_size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2687) &name_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2688) tcon->treeName, path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2689) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2690) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2691) req->NameLength = cpu_to_le16(name_len * 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2692) uni_path_len = copy_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2693) path = copy_path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2694) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2695) uni_path_len = (2 * UniStrnlen((wchar_t *)path, PATH_MAX)) + 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2696) /* MUST set path len (NameLength) to 0 opening root of share */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2697) req->NameLength = cpu_to_le16(uni_path_len - 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2698) copy_size = uni_path_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2699) if (copy_size % 8 != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2700) copy_size = roundup(copy_size, 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2701) copy_path = kzalloc(copy_size, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2702) if (!copy_path)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2703) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2704) memcpy((char *)copy_path, (const char *)path,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2705) uni_path_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2706) uni_path_len = copy_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2707) path = copy_path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2708) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2709)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2710) iov[1].iov_len = uni_path_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2711) iov[1].iov_base = path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2712)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2713) if ((!server->oplocks) || (tcon->no_lease))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2714) *oplock = SMB2_OPLOCK_LEVEL_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2715)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2716) if (!(server->capabilities & SMB2_GLOBAL_CAP_LEASING) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2717) *oplock == SMB2_OPLOCK_LEVEL_NONE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2718) req->RequestedOplockLevel = *oplock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2719) else if (!(server->capabilities & SMB2_GLOBAL_CAP_DIRECTORY_LEASING) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2720) (oparms->create_options & CREATE_NOT_FILE))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2721) req->RequestedOplockLevel = *oplock; /* no srv lease support */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2722) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2723) rc = add_lease_context(server, iov, &n_iov,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2724) oparms->fid->lease_key, oplock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2725) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2726) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2727) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2728)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2729) if (*oplock == SMB2_OPLOCK_LEVEL_BATCH) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2730) /* need to set Next field of lease context if we request it */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2731) if (server->capabilities & SMB2_GLOBAL_CAP_LEASING) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2732) struct create_context *ccontext =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2733) (struct create_context *)iov[n_iov-1].iov_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2734) ccontext->Next =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2735) cpu_to_le32(server->vals->create_lease_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2736) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2737)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2738) rc = add_durable_context(iov, &n_iov, oparms,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2739) tcon->use_persistent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2740) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2741) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2742) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2743)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2744) if (tcon->posix_extensions) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2745) if (n_iov > 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2746) struct create_context *ccontext =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2747) (struct create_context *)iov[n_iov-1].iov_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2748) ccontext->Next =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2749) cpu_to_le32(iov[n_iov-1].iov_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2750) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2751)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2752) rc = add_posix_context(iov, &n_iov, oparms->mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2753) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2754) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2755) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2756)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2757) if (tcon->snapshot_time) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2758) cifs_dbg(FYI, "adding snapshot context\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2759) if (n_iov > 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2760) struct create_context *ccontext =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2761) (struct create_context *)iov[n_iov-1].iov_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2762) ccontext->Next =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2763) cpu_to_le32(iov[n_iov-1].iov_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2764) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2765)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2766) rc = add_twarp_context(iov, &n_iov, tcon->snapshot_time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2767) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2768) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2769) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2770)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2771) if ((oparms->disposition != FILE_OPEN) && (oparms->cifs_sb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2772) bool set_mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2773) bool set_owner;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2774)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2775) if ((oparms->cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MODE_FROM_SID) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2776) (oparms->mode != ACL_NO_MODE))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2777) set_mode = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2778) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2779) set_mode = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2780) oparms->mode = ACL_NO_MODE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2781) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2782)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2783) if (oparms->cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UID_FROM_ACL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2784) set_owner = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2785) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2786) set_owner = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2787)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2788) if (set_owner | set_mode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2789) if (n_iov > 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2790) struct create_context *ccontext =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2791) (struct create_context *)iov[n_iov-1].iov_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2792) ccontext->Next = cpu_to_le32(iov[n_iov-1].iov_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2793) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2794)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2795) cifs_dbg(FYI, "add sd with mode 0x%x\n", oparms->mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2796) rc = add_sd_context(iov, &n_iov, oparms->mode, set_owner);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2797) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2798) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2799) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2800) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2801)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2802) if (n_iov > 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2803) struct create_context *ccontext =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2804) (struct create_context *)iov[n_iov-1].iov_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2805) ccontext->Next = cpu_to_le32(iov[n_iov-1].iov_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2806) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2807) add_query_id_context(iov, &n_iov);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2808)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2809) rqst->rq_nvec = n_iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2810) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2811) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2812)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2813) /* rq_iov[0] is the request and is released by cifs_small_buf_release().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2814) * All other vectors are freed by kfree().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2815) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2816) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2817) SMB2_open_free(struct smb_rqst *rqst)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2818) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2819) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2820)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2821) if (rqst && rqst->rq_iov) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2822) cifs_small_buf_release(rqst->rq_iov[0].iov_base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2823) for (i = 1; i < rqst->rq_nvec; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2824) if (rqst->rq_iov[i].iov_base != smb2_padding)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2825) kfree(rqst->rq_iov[i].iov_base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2826) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2827) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2828)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2829) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2830) SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2831) __u8 *oplock, struct smb2_file_all_info *buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2832) struct create_posix_rsp *posix,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2833) struct kvec *err_iov, int *buftype)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2834) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2835) struct smb_rqst rqst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2836) struct smb2_create_rsp *rsp = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2837) struct cifs_tcon *tcon = oparms->tcon;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2838) struct cifs_ses *ses = tcon->ses;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2839) struct TCP_Server_Info *server = cifs_pick_channel(ses);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2840) struct kvec iov[SMB2_CREATE_IOV_SIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2841) struct kvec rsp_iov = {NULL, 0};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2842) int resp_buftype = CIFS_NO_BUFFER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2843) int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2844) int flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2845)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2846) cifs_dbg(FYI, "create/open\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2847) if (!ses || !server)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2848) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2849)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2850) if (smb3_encryption_required(tcon))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2851) flags |= CIFS_TRANSFORM_REQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2852)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2853) memset(&rqst, 0, sizeof(struct smb_rqst));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2854) memset(&iov, 0, sizeof(iov));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2855) rqst.rq_iov = iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2856) rqst.rq_nvec = SMB2_CREATE_IOV_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2857)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2858) rc = SMB2_open_init(tcon, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2859) &rqst, oplock, oparms, path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2860) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2861) goto creat_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2862)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2863) trace_smb3_open_enter(xid, tcon->tid, tcon->ses->Suid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2864) oparms->create_options, oparms->desired_access);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2865)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2866) rc = cifs_send_recv(xid, ses, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2867) &rqst, &resp_buftype, flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2868) &rsp_iov);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2869) rsp = (struct smb2_create_rsp *)rsp_iov.iov_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2870)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2871) if (rc != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2872) cifs_stats_fail_inc(tcon, SMB2_CREATE_HE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2873) if (err_iov && rsp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2874) *err_iov = rsp_iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2875) *buftype = resp_buftype;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2876) resp_buftype = CIFS_NO_BUFFER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2877) rsp = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2878) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2879) trace_smb3_open_err(xid, tcon->tid, ses->Suid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2880) oparms->create_options, oparms->desired_access, rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2881) if (rc == -EREMCHG) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2882) pr_warn_once("server share %s deleted\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2883) tcon->treeName);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2884) tcon->need_reconnect = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2885) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2886) goto creat_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2887) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2888) trace_smb3_open_done(xid, rsp->PersistentFileId, tcon->tid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2889) ses->Suid, oparms->create_options,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2890) oparms->desired_access);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2891)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2892) atomic_inc(&tcon->num_remote_opens);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2893) oparms->fid->persistent_fid = rsp->PersistentFileId;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2894) oparms->fid->volatile_fid = rsp->VolatileFileId;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2895) oparms->fid->access = oparms->desired_access;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2896) #ifdef CONFIG_CIFS_DEBUG2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2897) oparms->fid->mid = le64_to_cpu(rsp->sync_hdr.MessageId);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2898) #endif /* CIFS_DEBUG2 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2899)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2900) if (buf) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2901) memcpy(buf, &rsp->CreationTime, 32);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2902) buf->AllocationSize = rsp->AllocationSize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2903) buf->EndOfFile = rsp->EndofFile;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2904) buf->Attributes = rsp->FileAttributes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2905) buf->NumberOfLinks = cpu_to_le32(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2906) buf->DeletePending = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2907) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2908)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2909)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2910) smb2_parse_contexts(server, rsp, &oparms->fid->epoch,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2911) oparms->fid->lease_key, oplock, buf, posix);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2912) creat_exit:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2913) SMB2_open_free(&rqst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2914) free_rsp_buf(resp_buftype, rsp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2915) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2916) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2917)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2918) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2919) SMB2_ioctl_init(struct cifs_tcon *tcon, struct TCP_Server_Info *server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2920) struct smb_rqst *rqst,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2921) u64 persistent_fid, u64 volatile_fid, u32 opcode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2922) bool is_fsctl, char *in_data, u32 indatalen,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2923) __u32 max_response_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2924) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2925) struct smb2_ioctl_req *req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2926) struct kvec *iov = rqst->rq_iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2927) unsigned int total_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2928) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2929) char *in_data_buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2930)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2931) rc = smb2_ioctl_req_init(opcode, tcon, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2932) (void **) &req, &total_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2933) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2934) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2935)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2936) if (indatalen) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2937) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2938) * indatalen is usually small at a couple of bytes max, so
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2939) * just allocate through generic pool
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2940) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2941) in_data_buf = kmemdup(in_data, indatalen, GFP_NOFS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2942) if (!in_data_buf) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2943) cifs_small_buf_release(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2944) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2945) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2946) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2947)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2948) req->CtlCode = cpu_to_le32(opcode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2949) req->PersistentFileId = persistent_fid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2950) req->VolatileFileId = volatile_fid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2951)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2952) iov[0].iov_base = (char *)req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2953) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2954) * If no input data, the size of ioctl struct in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2955) * protocol spec still includes a 1 byte data buffer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2956) * but if input data passed to ioctl, we do not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2957) * want to double count this, so we do not send
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2958) * the dummy one byte of data in iovec[0] if sending
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2959) * input data (in iovec[1]).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2960) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2961) if (indatalen) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2962) req->InputCount = cpu_to_le32(indatalen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2963) /* do not set InputOffset if no input data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2964) req->InputOffset =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2965) cpu_to_le32(offsetof(struct smb2_ioctl_req, Buffer));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2966) rqst->rq_nvec = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2967) iov[0].iov_len = total_len - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2968) iov[1].iov_base = in_data_buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2969) iov[1].iov_len = indatalen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2970) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2971) rqst->rq_nvec = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2972) iov[0].iov_len = total_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2973) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2974)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2975) req->OutputOffset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2976) req->OutputCount = 0; /* MBZ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2977)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2978) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2979) * In most cases max_response_size is set to 16K (CIFSMaxBufSize)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2980) * We Could increase default MaxOutputResponse, but that could require
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2981) * more credits. Windows typically sets this smaller, but for some
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2982) * ioctls it may be useful to allow server to send more. No point
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2983) * limiting what the server can send as long as fits in one credit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2984) * We can not handle more than CIFS_MAX_BUF_SIZE yet but may want
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2985) * to increase this limit up in the future.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2986) * Note that for snapshot queries that servers like Azure expect that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2987) * the first query be minimal size (and just used to get the number/size
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2988) * of previous versions) so response size must be specified as EXACTLY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2989) * sizeof(struct snapshot_array) which is 16 when rounded up to multiple
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2990) * of eight bytes. Currently that is the only case where we set max
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2991) * response size smaller.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2992) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2993) req->MaxOutputResponse = cpu_to_le32(max_response_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2994) req->sync_hdr.CreditCharge =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2995) cpu_to_le16(DIV_ROUND_UP(max(indatalen, max_response_size),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2996) SMB2_MAX_BUFFER_SIZE));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2997) if (is_fsctl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2998) req->Flags = cpu_to_le32(SMB2_0_IOCTL_IS_FSCTL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2999) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3000) req->Flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3001)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3002) /* validate negotiate request must be signed - see MS-SMB2 3.2.5.5 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3003) if (opcode == FSCTL_VALIDATE_NEGOTIATE_INFO)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3004) req->sync_hdr.Flags |= SMB2_FLAGS_SIGNED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3005)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3006) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3007) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3008)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3009) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3010) SMB2_ioctl_free(struct smb_rqst *rqst)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3011) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3012) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3013) if (rqst && rqst->rq_iov) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3014) cifs_small_buf_release(rqst->rq_iov[0].iov_base); /* request */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3015) for (i = 1; i < rqst->rq_nvec; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3016) if (rqst->rq_iov[i].iov_base != smb2_padding)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3017) kfree(rqst->rq_iov[i].iov_base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3018) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3019) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3020)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3021)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3022) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3023) * SMB2 IOCTL is used for both IOCTLs and FSCTLs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3024) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3025) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3026) SMB2_ioctl(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3027) u64 volatile_fid, u32 opcode, bool is_fsctl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3028) char *in_data, u32 indatalen, u32 max_out_data_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3029) char **out_data, u32 *plen /* returned data len */)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3030) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3031) struct smb_rqst rqst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3032) struct smb2_ioctl_rsp *rsp = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3033) struct cifs_ses *ses;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3034) struct TCP_Server_Info *server;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3035) struct kvec iov[SMB2_IOCTL_IOV_SIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3036) struct kvec rsp_iov = {NULL, 0};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3037) int resp_buftype = CIFS_NO_BUFFER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3038) int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3039) int flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3040)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3041) cifs_dbg(FYI, "SMB2 IOCTL\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3042)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3043) if (out_data != NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3044) *out_data = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3045)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3046) /* zero out returned data len, in case of error */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3047) if (plen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3048) *plen = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3049)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3050) if (!tcon)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3051) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3052)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3053) ses = tcon->ses;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3054) if (!ses)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3055) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3056)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3057) server = cifs_pick_channel(ses);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3058) if (!server)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3059) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3060)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3061) if (smb3_encryption_required(tcon))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3062) flags |= CIFS_TRANSFORM_REQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3063)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3064) memset(&rqst, 0, sizeof(struct smb_rqst));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3065) memset(&iov, 0, sizeof(iov));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3066) rqst.rq_iov = iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3067) rqst.rq_nvec = SMB2_IOCTL_IOV_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3068)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3069) rc = SMB2_ioctl_init(tcon, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3070) &rqst, persistent_fid, volatile_fid, opcode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3071) is_fsctl, in_data, indatalen, max_out_data_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3072) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3073) goto ioctl_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3074)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3075) rc = cifs_send_recv(xid, ses, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3076) &rqst, &resp_buftype, flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3077) &rsp_iov);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3078) rsp = (struct smb2_ioctl_rsp *)rsp_iov.iov_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3079)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3080) if (rc != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3081) trace_smb3_fsctl_err(xid, persistent_fid, tcon->tid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3082) ses->Suid, 0, opcode, rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3083)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3084) if ((rc != 0) && (rc != -EINVAL) && (rc != -E2BIG)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3085) cifs_stats_fail_inc(tcon, SMB2_IOCTL_HE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3086) goto ioctl_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3087) } else if (rc == -EINVAL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3088) if ((opcode != FSCTL_SRV_COPYCHUNK_WRITE) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3089) (opcode != FSCTL_SRV_COPYCHUNK)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3090) cifs_stats_fail_inc(tcon, SMB2_IOCTL_HE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3091) goto ioctl_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3092) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3093) } else if (rc == -E2BIG) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3094) if (opcode != FSCTL_QUERY_ALLOCATED_RANGES) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3095) cifs_stats_fail_inc(tcon, SMB2_IOCTL_HE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3096) goto ioctl_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3097) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3098) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3099)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3100) /* check if caller wants to look at return data or just return rc */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3101) if ((plen == NULL) || (out_data == NULL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3102) goto ioctl_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3104) *plen = le32_to_cpu(rsp->OutputCount);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3106) /* We check for obvious errors in the output buffer length and offset */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3107) if (*plen == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3108) goto ioctl_exit; /* server returned no data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3109) else if (*plen > rsp_iov.iov_len || *plen > 0xFF00) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3110) cifs_tcon_dbg(VFS, "srv returned invalid ioctl length: %d\n", *plen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3111) *plen = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3112) rc = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3113) goto ioctl_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3114) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3116) if (rsp_iov.iov_len - *plen < le32_to_cpu(rsp->OutputOffset)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3117) cifs_tcon_dbg(VFS, "Malformed ioctl resp: len %d offset %d\n", *plen,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3118) le32_to_cpu(rsp->OutputOffset));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3119) *plen = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3120) rc = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3121) goto ioctl_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3122) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3124) *out_data = kmemdup((char *)rsp + le32_to_cpu(rsp->OutputOffset),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3125) *plen, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3126) if (*out_data == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3127) rc = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3128) goto ioctl_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3129) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3131) ioctl_exit:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3132) SMB2_ioctl_free(&rqst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3133) free_rsp_buf(resp_buftype, rsp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3134) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3135) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3137) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3138) * Individual callers to ioctl worker function follow
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3139) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3141) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3142) SMB2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3143) u64 persistent_fid, u64 volatile_fid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3144) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3145) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3146) struct compress_ioctl fsctl_input;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3147) char *ret_data = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3149) fsctl_input.CompressionState =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3150) cpu_to_le16(COMPRESSION_FORMAT_DEFAULT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3152) rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3153) FSCTL_SET_COMPRESSION, true /* is_fsctl */,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3154) (char *)&fsctl_input /* data input */,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3155) 2 /* in data len */, CIFSMaxBufSize /* max out data */,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3156) &ret_data /* out data */, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3158) cifs_dbg(FYI, "set compression rc %d\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3160) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3161) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3163) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3164) SMB2_close_init(struct cifs_tcon *tcon, struct TCP_Server_Info *server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3165) struct smb_rqst *rqst,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3166) u64 persistent_fid, u64 volatile_fid, bool query_attrs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3167) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3168) struct smb2_close_req *req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3169) struct kvec *iov = rqst->rq_iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3170) unsigned int total_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3171) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3173) rc = smb2_plain_req_init(SMB2_CLOSE, tcon, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3174) (void **) &req, &total_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3175) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3176) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3177)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3178) req->PersistentFileId = persistent_fid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3179) req->VolatileFileId = volatile_fid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3180) if (query_attrs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3181) req->Flags = SMB2_CLOSE_FLAG_POSTQUERY_ATTRIB;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3182) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3183) req->Flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3184) iov[0].iov_base = (char *)req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3185) iov[0].iov_len = total_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3187) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3188) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3190) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3191) SMB2_close_free(struct smb_rqst *rqst)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3192) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3193) if (rqst && rqst->rq_iov)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3194) cifs_small_buf_release(rqst->rq_iov[0].iov_base); /* request */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3195) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3197) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3198) __SMB2_close(const unsigned int xid, struct cifs_tcon *tcon,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3199) u64 persistent_fid, u64 volatile_fid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3200) struct smb2_file_network_open_info *pbuf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3201) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3202) struct smb_rqst rqst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3203) struct smb2_close_rsp *rsp = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3204) struct cifs_ses *ses = tcon->ses;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3205) struct TCP_Server_Info *server = cifs_pick_channel(ses);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3206) struct kvec iov[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3207) struct kvec rsp_iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3208) int resp_buftype = CIFS_NO_BUFFER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3209) int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3210) int flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3211) bool query_attrs = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3213) cifs_dbg(FYI, "Close\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3214)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3215) if (!ses || !server)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3216) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3217)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3218) if (smb3_encryption_required(tcon))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3219) flags |= CIFS_TRANSFORM_REQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3221) memset(&rqst, 0, sizeof(struct smb_rqst));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3222) memset(&iov, 0, sizeof(iov));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3223) rqst.rq_iov = iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3224) rqst.rq_nvec = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3226) /* check if need to ask server to return timestamps in close response */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3227) if (pbuf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3228) query_attrs = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3230) trace_smb3_close_enter(xid, persistent_fid, tcon->tid, ses->Suid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3231) rc = SMB2_close_init(tcon, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3232) &rqst, persistent_fid, volatile_fid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3233) query_attrs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3234) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3235) goto close_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3236)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3237) rc = cifs_send_recv(xid, ses, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3238) &rqst, &resp_buftype, flags, &rsp_iov);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3239) rsp = (struct smb2_close_rsp *)rsp_iov.iov_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3241) if (rc != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3242) cifs_stats_fail_inc(tcon, SMB2_CLOSE_HE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3243) trace_smb3_close_err(xid, persistent_fid, tcon->tid, ses->Suid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3244) rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3245) goto close_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3246) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3247) trace_smb3_close_done(xid, persistent_fid, tcon->tid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3248) ses->Suid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3249) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3250) * Note that have to subtract 4 since struct network_open_info
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3251) * has a final 4 byte pad that close response does not have
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3252) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3253) if (pbuf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3254) memcpy(pbuf, (char *)&rsp->CreationTime, sizeof(*pbuf) - 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3255) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3257) atomic_dec(&tcon->num_remote_opens);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3258) close_exit:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3259) SMB2_close_free(&rqst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3260) free_rsp_buf(resp_buftype, rsp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3261)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3262) /* retry close in a worker thread if this one is interrupted */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3263) if (is_interrupt_error(rc)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3264) int tmp_rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3266) tmp_rc = smb2_handle_cancelled_close(tcon, persistent_fid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3267) volatile_fid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3268) if (tmp_rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3269) cifs_dbg(VFS, "handle cancelled close fid 0x%llx returned error %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3270) persistent_fid, tmp_rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3271) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3272) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3273) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3275) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3276) SMB2_close(const unsigned int xid, struct cifs_tcon *tcon,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3277) u64 persistent_fid, u64 volatile_fid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3278) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3279) return __SMB2_close(xid, tcon, persistent_fid, volatile_fid, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3280) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3281)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3282) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3283) smb2_validate_iov(unsigned int offset, unsigned int buffer_length,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3284) struct kvec *iov, unsigned int min_buf_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3285) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3286) unsigned int smb_len = iov->iov_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3287) char *end_of_smb = smb_len + (char *)iov->iov_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3288) char *begin_of_buf = offset + (char *)iov->iov_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3289) char *end_of_buf = begin_of_buf + buffer_length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3290)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3292) if (buffer_length < min_buf_size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3293) cifs_dbg(VFS, "buffer length %d smaller than minimum size %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3294) buffer_length, min_buf_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3295) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3296) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3298) /* check if beyond RFC1001 maximum length */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3299) if ((smb_len > 0x7FFFFF) || (buffer_length > 0x7FFFFF)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3300) cifs_dbg(VFS, "buffer length %d or smb length %d too large\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3301) buffer_length, smb_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3302) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3303) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3304)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3305) if ((begin_of_buf > end_of_smb) || (end_of_buf > end_of_smb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3306) cifs_dbg(VFS, "Invalid server response, bad offset to data\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3307) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3308) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3309)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3310) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3311) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3312)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3313) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3314) * If SMB buffer fields are valid, copy into temporary buffer to hold result.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3315) * Caller must free buffer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3316) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3317) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3318) smb2_validate_and_copy_iov(unsigned int offset, unsigned int buffer_length,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3319) struct kvec *iov, unsigned int minbufsize,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3320) char *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3321) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3322) char *begin_of_buf = offset + (char *)iov->iov_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3323) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3324)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3325) if (!data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3326) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3327)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3328) rc = smb2_validate_iov(offset, buffer_length, iov, minbufsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3329) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3330) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3331)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3332) memcpy(data, begin_of_buf, buffer_length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3333)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3334) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3335) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3336)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3337) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3338) SMB2_query_info_init(struct cifs_tcon *tcon, struct TCP_Server_Info *server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3339) struct smb_rqst *rqst,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3340) u64 persistent_fid, u64 volatile_fid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3341) u8 info_class, u8 info_type, u32 additional_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3342) size_t output_len, size_t input_len, void *input)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3343) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3344) struct smb2_query_info_req *req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3345) struct kvec *iov = rqst->rq_iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3346) unsigned int total_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3347) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3348)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3349) rc = smb2_plain_req_init(SMB2_QUERY_INFO, tcon, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3350) (void **) &req, &total_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3351) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3352) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3353)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3354) req->InfoType = info_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3355) req->FileInfoClass = info_class;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3356) req->PersistentFileId = persistent_fid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3357) req->VolatileFileId = volatile_fid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3358) req->AdditionalInformation = cpu_to_le32(additional_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3359)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3360) req->OutputBufferLength = cpu_to_le32(output_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3361) if (input_len) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3362) req->InputBufferLength = cpu_to_le32(input_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3363) /* total_len for smb query request never close to le16 max */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3364) req->InputBufferOffset = cpu_to_le16(total_len - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3365) memcpy(req->Buffer, input, input_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3366) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3367)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3368) iov[0].iov_base = (char *)req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3369) /* 1 for Buffer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3370) iov[0].iov_len = total_len - 1 + input_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3371) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3372) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3373)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3374) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3375) SMB2_query_info_free(struct smb_rqst *rqst)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3376) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3377) if (rqst && rqst->rq_iov)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3378) cifs_small_buf_release(rqst->rq_iov[0].iov_base); /* request */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3379) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3381) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3382) query_info(const unsigned int xid, struct cifs_tcon *tcon,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3383) u64 persistent_fid, u64 volatile_fid, u8 info_class, u8 info_type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3384) u32 additional_info, size_t output_len, size_t min_len, void **data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3385) u32 *dlen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3386) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3387) struct smb_rqst rqst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3388) struct smb2_query_info_rsp *rsp = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3389) struct kvec iov[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3390) struct kvec rsp_iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3391) int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3392) int resp_buftype = CIFS_NO_BUFFER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3393) struct cifs_ses *ses = tcon->ses;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3394) struct TCP_Server_Info *server;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3395) int flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3396) bool allocated = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3397)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3398) cifs_dbg(FYI, "Query Info\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3399)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3400) if (!ses)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3401) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3402) server = cifs_pick_channel(ses);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3403) if (!server)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3404) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3405)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3406) if (smb3_encryption_required(tcon))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3407) flags |= CIFS_TRANSFORM_REQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3408)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3409) memset(&rqst, 0, sizeof(struct smb_rqst));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3410) memset(&iov, 0, sizeof(iov));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3411) rqst.rq_iov = iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3412) rqst.rq_nvec = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3413)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3414) rc = SMB2_query_info_init(tcon, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3415) &rqst, persistent_fid, volatile_fid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3416) info_class, info_type, additional_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3417) output_len, 0, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3418) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3419) goto qinf_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3420)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3421) trace_smb3_query_info_enter(xid, persistent_fid, tcon->tid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3422) ses->Suid, info_class, (__u32)info_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3423)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3424) rc = cifs_send_recv(xid, ses, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3425) &rqst, &resp_buftype, flags, &rsp_iov);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3426) rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3427)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3428) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3429) cifs_stats_fail_inc(tcon, SMB2_QUERY_INFO_HE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3430) trace_smb3_query_info_err(xid, persistent_fid, tcon->tid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3431) ses->Suid, info_class, (__u32)info_type, rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3432) goto qinf_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3433) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3434)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3435) trace_smb3_query_info_done(xid, persistent_fid, tcon->tid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3436) ses->Suid, info_class, (__u32)info_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3437)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3438) if (dlen) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3439) *dlen = le32_to_cpu(rsp->OutputBufferLength);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3440) if (!*data) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3441) *data = kmalloc(*dlen, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3442) if (!*data) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3443) cifs_tcon_dbg(VFS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3444) "Error %d allocating memory for acl\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3445) rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3446) *dlen = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3447) rc = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3448) goto qinf_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3449) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3450) allocated = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3451) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3452) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3453)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3454) rc = smb2_validate_and_copy_iov(le16_to_cpu(rsp->OutputBufferOffset),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3455) le32_to_cpu(rsp->OutputBufferLength),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3456) &rsp_iov, min_len, *data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3457) if (rc && allocated) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3458) kfree(*data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3459) *data = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3460) *dlen = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3461) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3462)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3463) qinf_exit:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3464) SMB2_query_info_free(&rqst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3465) free_rsp_buf(resp_buftype, rsp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3466) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3467) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3468)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3469) int SMB2_query_info(const unsigned int xid, struct cifs_tcon *tcon,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3470) u64 persistent_fid, u64 volatile_fid, struct smb2_file_all_info *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3471) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3472) return query_info(xid, tcon, persistent_fid, volatile_fid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3473) FILE_ALL_INFORMATION, SMB2_O_INFO_FILE, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3474) sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3475) sizeof(struct smb2_file_all_info), (void **)&data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3476) NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3477) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3478)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3479) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3480) SMB311_posix_query_info(const unsigned int xid, struct cifs_tcon *tcon,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3481) u64 persistent_fid, u64 volatile_fid, struct smb311_posix_qinfo *data, u32 *plen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3482) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3483) size_t output_len = sizeof(struct smb311_posix_qinfo *) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3484) (sizeof(struct cifs_sid) * 2) + (PATH_MAX * 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3485) *plen = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3486)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3487) return query_info(xid, tcon, persistent_fid, volatile_fid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3488) SMB_FIND_FILE_POSIX_INFO, SMB2_O_INFO_FILE, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3489) output_len, sizeof(struct smb311_posix_qinfo), (void **)&data, plen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3490) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3491)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3492) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3493) SMB2_query_acl(const unsigned int xid, struct cifs_tcon *tcon,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3494) u64 persistent_fid, u64 volatile_fid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3495) void **data, u32 *plen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3496) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3497) __u32 additional_info = OWNER_SECINFO | GROUP_SECINFO | DACL_SECINFO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3498) *plen = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3499)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3500) return query_info(xid, tcon, persistent_fid, volatile_fid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3501) 0, SMB2_O_INFO_SECURITY, additional_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3502) SMB2_MAX_BUFFER_SIZE, MIN_SEC_DESC_LEN, data, plen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3503) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3504)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3505) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3506) SMB2_get_srv_num(const unsigned int xid, struct cifs_tcon *tcon,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3507) u64 persistent_fid, u64 volatile_fid, __le64 *uniqueid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3508) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3509) return query_info(xid, tcon, persistent_fid, volatile_fid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3510) FILE_INTERNAL_INFORMATION, SMB2_O_INFO_FILE, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3511) sizeof(struct smb2_file_internal_info),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3512) sizeof(struct smb2_file_internal_info),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3513) (void **)&uniqueid, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3514) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3515)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3516) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3517) * CHANGE_NOTIFY Request is sent to get notifications on changes to a directory
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3518) * See MS-SMB2 2.2.35 and 2.2.36
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3519) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3520)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3521) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3522) SMB2_notify_init(const unsigned int xid, struct smb_rqst *rqst,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3523) struct cifs_tcon *tcon, struct TCP_Server_Info *server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3524) u64 persistent_fid, u64 volatile_fid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3525) u32 completion_filter, bool watch_tree)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3526) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3527) struct smb2_change_notify_req *req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3528) struct kvec *iov = rqst->rq_iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3529) unsigned int total_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3530) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3531)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3532) rc = smb2_plain_req_init(SMB2_CHANGE_NOTIFY, tcon, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3533) (void **) &req, &total_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3534) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3535) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3536)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3537) req->PersistentFileId = persistent_fid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3538) req->VolatileFileId = volatile_fid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3539) /* See note 354 of MS-SMB2, 64K max */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3540) req->OutputBufferLength =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3541) cpu_to_le32(SMB2_MAX_BUFFER_SIZE - MAX_SMB2_HDR_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3542) req->CompletionFilter = cpu_to_le32(completion_filter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3543) if (watch_tree)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3544) req->Flags = cpu_to_le16(SMB2_WATCH_TREE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3545) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3546) req->Flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3547)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3548) iov[0].iov_base = (char *)req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3549) iov[0].iov_len = total_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3550)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3551) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3552) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3553)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3554) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3555) SMB2_change_notify(const unsigned int xid, struct cifs_tcon *tcon,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3556) u64 persistent_fid, u64 volatile_fid, bool watch_tree,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3557) u32 completion_filter)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3558) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3559) struct cifs_ses *ses = tcon->ses;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3560) struct TCP_Server_Info *server = cifs_pick_channel(ses);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3561) struct smb_rqst rqst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3562) struct kvec iov[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3563) struct kvec rsp_iov = {NULL, 0};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3564) int resp_buftype = CIFS_NO_BUFFER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3565) int flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3566) int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3567)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3568) cifs_dbg(FYI, "change notify\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3569) if (!ses || !server)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3570) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3571)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3572) if (smb3_encryption_required(tcon))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3573) flags |= CIFS_TRANSFORM_REQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3574)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3575) memset(&rqst, 0, sizeof(struct smb_rqst));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3576) memset(&iov, 0, sizeof(iov));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3577) rqst.rq_iov = iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3578) rqst.rq_nvec = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3579)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3580) rc = SMB2_notify_init(xid, &rqst, tcon, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3581) persistent_fid, volatile_fid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3582) completion_filter, watch_tree);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3583) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3584) goto cnotify_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3585)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3586) trace_smb3_notify_enter(xid, persistent_fid, tcon->tid, ses->Suid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3587) (u8)watch_tree, completion_filter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3588) rc = cifs_send_recv(xid, ses, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3589) &rqst, &resp_buftype, flags, &rsp_iov);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3590)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3591) if (rc != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3592) cifs_stats_fail_inc(tcon, SMB2_CHANGE_NOTIFY_HE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3593) trace_smb3_notify_err(xid, persistent_fid, tcon->tid, ses->Suid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3594) (u8)watch_tree, completion_filter, rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3595) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3596) trace_smb3_notify_done(xid, persistent_fid, tcon->tid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3597) ses->Suid, (u8)watch_tree, completion_filter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3598)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3599) cnotify_exit:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3600) if (rqst.rq_iov)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3601) cifs_small_buf_release(rqst.rq_iov[0].iov_base); /* request */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3602) free_rsp_buf(resp_buftype, rsp_iov.iov_base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3603) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3604) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3605)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3606)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3607)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3608) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3609) * This is a no-op for now. We're not really interested in the reply, but
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3610) * rather in the fact that the server sent one and that server->lstrp
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3611) * gets updated.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3612) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3613) * FIXME: maybe we should consider checking that the reply matches request?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3614) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3615) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3616) smb2_echo_callback(struct mid_q_entry *mid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3617) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3618) struct TCP_Server_Info *server = mid->callback_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3619) struct smb2_echo_rsp *rsp = (struct smb2_echo_rsp *)mid->resp_buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3620) struct cifs_credits credits = { .value = 0, .instance = 0 };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3621)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3622) if (mid->mid_state == MID_RESPONSE_RECEIVED
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3623) || mid->mid_state == MID_RESPONSE_MALFORMED) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3624) credits.value = le16_to_cpu(rsp->sync_hdr.CreditRequest);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3625) credits.instance = server->reconnect_instance;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3626) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3627)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3628) DeleteMidQEntry(mid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3629) add_credits(server, &credits, CIFS_ECHO_OP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3630) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3631)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3632) void smb2_reconnect_server(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3633) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3634) struct TCP_Server_Info *server = container_of(work,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3635) struct TCP_Server_Info, reconnect.work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3636) struct cifs_ses *ses;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3637) struct cifs_tcon *tcon, *tcon2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3638) struct list_head tmp_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3639) int tcon_exist = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3640) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3641) int resched = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3642)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3643)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3644) /* Prevent simultaneous reconnects that can corrupt tcon->rlist list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3645) mutex_lock(&server->reconnect_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3646)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3647) INIT_LIST_HEAD(&tmp_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3648) cifs_dbg(FYI, "Need negotiate, reconnecting tcons\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3649)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3650) spin_lock(&cifs_tcp_ses_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3651) list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3652) list_for_each_entry(tcon, &ses->tcon_list, tcon_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3653) if (tcon->need_reconnect || tcon->need_reopen_files) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3654) tcon->tc_count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3655) list_add_tail(&tcon->rlist, &tmp_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3656) tcon_exist = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3657) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3658) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3659) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3660) * IPC has the same lifetime as its session and uses its
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3661) * refcount.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3662) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3663) if (ses->tcon_ipc && ses->tcon_ipc->need_reconnect) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3664) list_add_tail(&ses->tcon_ipc->rlist, &tmp_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3665) tcon_exist = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3666) ses->ses_count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3667) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3668) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3669) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3670) * Get the reference to server struct to be sure that the last call of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3671) * cifs_put_tcon() in the loop below won't release the server pointer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3672) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3673) if (tcon_exist)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3674) server->srv_count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3675)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3676) spin_unlock(&cifs_tcp_ses_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3677)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3678) list_for_each_entry_safe(tcon, tcon2, &tmp_list, rlist) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3679) rc = smb2_reconnect(SMB2_INTERNAL_CMD, tcon, server);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3680) if (!rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3681) cifs_reopen_persistent_handles(tcon);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3682) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3683) resched = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3684) list_del_init(&tcon->rlist);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3685) if (tcon->ipc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3686) cifs_put_smb_ses(tcon->ses);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3687) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3688) cifs_put_tcon(tcon);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3689) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3690)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3691) cifs_dbg(FYI, "Reconnecting tcons finished\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3692) if (resched)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3693) queue_delayed_work(cifsiod_wq, &server->reconnect, 2 * HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3694) mutex_unlock(&server->reconnect_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3695)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3696) /* now we can safely release srv struct */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3697) if (tcon_exist)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3698) cifs_put_tcp_session(server, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3699) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3700)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3701) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3702) SMB2_echo(struct TCP_Server_Info *server)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3703) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3704) struct smb2_echo_req *req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3705) int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3706) struct kvec iov[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3707) struct smb_rqst rqst = { .rq_iov = iov,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3708) .rq_nvec = 1 };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3709) unsigned int total_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3710)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3711) cifs_dbg(FYI, "In echo request\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3712)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3713) if (server->tcpStatus == CifsNeedNegotiate) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3714) /* No need to send echo on newly established connections */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3715) mod_delayed_work(cifsiod_wq, &server->reconnect, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3716) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3717) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3718)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3719) rc = smb2_plain_req_init(SMB2_ECHO, NULL, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3720) (void **)&req, &total_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3721) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3722) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3723)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3724) req->sync_hdr.CreditRequest = cpu_to_le16(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3725)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3726) iov[0].iov_len = total_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3727) iov[0].iov_base = (char *)req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3728)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3729) rc = cifs_call_async(server, &rqst, NULL, smb2_echo_callback, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3730) server, CIFS_ECHO_OP, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3731) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3732) cifs_dbg(FYI, "Echo request failed: %d\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3733)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3734) cifs_small_buf_release(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3735) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3736) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3737)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3738) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3739) SMB2_flush_free(struct smb_rqst *rqst)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3740) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3741) if (rqst && rqst->rq_iov)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3742) cifs_small_buf_release(rqst->rq_iov[0].iov_base); /* request */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3743) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3744)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3745) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3746) SMB2_flush_init(const unsigned int xid, struct smb_rqst *rqst,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3747) struct cifs_tcon *tcon, struct TCP_Server_Info *server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3748) u64 persistent_fid, u64 volatile_fid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3749) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3750) struct smb2_flush_req *req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3751) struct kvec *iov = rqst->rq_iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3752) unsigned int total_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3753) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3754)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3755) rc = smb2_plain_req_init(SMB2_FLUSH, tcon, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3756) (void **) &req, &total_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3757) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3758) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3759)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3760) req->PersistentFileId = persistent_fid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3761) req->VolatileFileId = volatile_fid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3762)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3763) iov[0].iov_base = (char *)req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3764) iov[0].iov_len = total_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3765)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3766) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3767) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3768)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3769) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3770) SMB2_flush(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3771) u64 volatile_fid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3772) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3773) struct cifs_ses *ses = tcon->ses;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3774) struct smb_rqst rqst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3775) struct kvec iov[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3776) struct kvec rsp_iov = {NULL, 0};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3777) struct TCP_Server_Info *server = cifs_pick_channel(ses);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3778) int resp_buftype = CIFS_NO_BUFFER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3779) int flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3780) int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3781)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3782) cifs_dbg(FYI, "flush\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3783) if (!ses || !(ses->server))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3784) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3785)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3786) if (smb3_encryption_required(tcon))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3787) flags |= CIFS_TRANSFORM_REQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3788)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3789) memset(&rqst, 0, sizeof(struct smb_rqst));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3790) memset(&iov, 0, sizeof(iov));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3791) rqst.rq_iov = iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3792) rqst.rq_nvec = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3793)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3794) rc = SMB2_flush_init(xid, &rqst, tcon, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3795) persistent_fid, volatile_fid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3796) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3797) goto flush_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3798)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3799) trace_smb3_flush_enter(xid, persistent_fid, tcon->tid, ses->Suid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3800) rc = cifs_send_recv(xid, ses, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3801) &rqst, &resp_buftype, flags, &rsp_iov);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3802)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3803) if (rc != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3804) cifs_stats_fail_inc(tcon, SMB2_FLUSH_HE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3805) trace_smb3_flush_err(xid, persistent_fid, tcon->tid, ses->Suid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3806) rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3807) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3808) trace_smb3_flush_done(xid, persistent_fid, tcon->tid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3809) ses->Suid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3810)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3811) flush_exit:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3812) SMB2_flush_free(&rqst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3813) free_rsp_buf(resp_buftype, rsp_iov.iov_base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3814) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3815) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3816)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3817) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3818) * To form a chain of read requests, any read requests after the first should
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3819) * have the end_of_chain boolean set to true.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3820) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3821) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3822) smb2_new_read_req(void **buf, unsigned int *total_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3823) struct cifs_io_parms *io_parms, struct cifs_readdata *rdata,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3824) unsigned int remaining_bytes, int request_type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3825) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3826) int rc = -EACCES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3827) struct smb2_read_plain_req *req = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3828) struct smb2_sync_hdr *shdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3829) struct TCP_Server_Info *server = io_parms->server;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3830)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3831) rc = smb2_plain_req_init(SMB2_READ, io_parms->tcon, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3832) (void **) &req, total_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3833) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3834) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3835)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3836) if (server == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3837) return -ECONNABORTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3838)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3839) shdr = &req->sync_hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3840) shdr->ProcessId = cpu_to_le32(io_parms->pid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3841)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3842) req->PersistentFileId = io_parms->persistent_fid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3843) req->VolatileFileId = io_parms->volatile_fid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3844) req->ReadChannelInfoOffset = 0; /* reserved */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3845) req->ReadChannelInfoLength = 0; /* reserved */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3846) req->Channel = 0; /* reserved */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3847) req->MinimumCount = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3848) req->Length = cpu_to_le32(io_parms->length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3849) req->Offset = cpu_to_le64(io_parms->offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3850)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3851) trace_smb3_read_enter(0 /* xid */,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3852) io_parms->persistent_fid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3853) io_parms->tcon->tid, io_parms->tcon->ses->Suid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3854) io_parms->offset, io_parms->length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3855) #ifdef CONFIG_CIFS_SMB_DIRECT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3856) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3857) * If we want to do a RDMA write, fill in and append
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3858) * smbd_buffer_descriptor_v1 to the end of read request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3859) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3860) if (server->rdma && rdata && !server->sign &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3861) rdata->bytes >= server->smbd_conn->rdma_readwrite_threshold) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3862)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3863) struct smbd_buffer_descriptor_v1 *v1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3864) bool need_invalidate = server->dialect == SMB30_PROT_ID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3865)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3866) rdata->mr = smbd_register_mr(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3867) server->smbd_conn, rdata->pages,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3868) rdata->nr_pages, rdata->page_offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3869) rdata->tailsz, true, need_invalidate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3870) if (!rdata->mr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3871) return -EAGAIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3872)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3873) req->Channel = SMB2_CHANNEL_RDMA_V1_INVALIDATE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3874) if (need_invalidate)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3875) req->Channel = SMB2_CHANNEL_RDMA_V1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3876) req->ReadChannelInfoOffset =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3877) cpu_to_le16(offsetof(struct smb2_read_plain_req, Buffer));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3878) req->ReadChannelInfoLength =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3879) cpu_to_le16(sizeof(struct smbd_buffer_descriptor_v1));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3880) v1 = (struct smbd_buffer_descriptor_v1 *) &req->Buffer[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3881) v1->offset = cpu_to_le64(rdata->mr->mr->iova);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3882) v1->token = cpu_to_le32(rdata->mr->mr->rkey);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3883) v1->length = cpu_to_le32(rdata->mr->mr->length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3884)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3885) *total_len += sizeof(*v1) - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3886) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3887) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3888) if (request_type & CHAINED_REQUEST) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3889) if (!(request_type & END_OF_CHAIN)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3890) /* next 8-byte aligned request */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3891) *total_len = DIV_ROUND_UP(*total_len, 8) * 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3892) shdr->NextCommand = cpu_to_le32(*total_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3893) } else /* END_OF_CHAIN */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3894) shdr->NextCommand = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3895) if (request_type & RELATED_REQUEST) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3896) shdr->Flags |= SMB2_FLAGS_RELATED_OPERATIONS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3897) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3898) * Related requests use info from previous read request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3899) * in chain.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3900) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3901) shdr->SessionId = 0xFFFFFFFFFFFFFFFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3902) shdr->TreeId = 0xFFFFFFFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3903) req->PersistentFileId = 0xFFFFFFFFFFFFFFFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3904) req->VolatileFileId = 0xFFFFFFFFFFFFFFFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3905) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3906) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3907) if (remaining_bytes > io_parms->length)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3908) req->RemainingBytes = cpu_to_le32(remaining_bytes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3909) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3910) req->RemainingBytes = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3911)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3912) *buf = req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3913) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3914) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3915)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3916) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3917) smb2_readv_callback(struct mid_q_entry *mid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3918) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3919) struct cifs_readdata *rdata = mid->callback_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3920) struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3921) struct TCP_Server_Info *server = rdata->server;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3922) struct smb2_sync_hdr *shdr =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3923) (struct smb2_sync_hdr *)rdata->iov[0].iov_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3924) struct cifs_credits credits = { .value = 0, .instance = 0 };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3925) struct smb_rqst rqst = { .rq_iov = &rdata->iov[1],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3926) .rq_nvec = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3927) .rq_pages = rdata->pages,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3928) .rq_offset = rdata->page_offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3929) .rq_npages = rdata->nr_pages,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3930) .rq_pagesz = rdata->pagesz,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3931) .rq_tailsz = rdata->tailsz };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3932)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3933) WARN_ONCE(rdata->server != mid->server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3934) "rdata server %p != mid server %p",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3935) rdata->server, mid->server);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3936)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3937) cifs_dbg(FYI, "%s: mid=%llu state=%d result=%d bytes=%u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3938) __func__, mid->mid, mid->mid_state, rdata->result,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3939) rdata->bytes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3940)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3941) switch (mid->mid_state) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3942) case MID_RESPONSE_RECEIVED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3943) credits.value = le16_to_cpu(shdr->CreditRequest);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3944) credits.instance = server->reconnect_instance;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3945) /* result already set, check signature */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3946) if (server->sign && !mid->decrypted) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3947) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3948)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3949) rc = smb2_verify_signature(&rqst, server);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3950) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3951) cifs_tcon_dbg(VFS, "SMB signature verification returned error = %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3952) rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3953) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3954) /* FIXME: should this be counted toward the initiating task? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3955) task_io_account_read(rdata->got_bytes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3956) cifs_stats_bytes_read(tcon, rdata->got_bytes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3957) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3958) case MID_REQUEST_SUBMITTED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3959) case MID_RETRY_NEEDED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3960) rdata->result = -EAGAIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3961) if (server->sign && rdata->got_bytes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3962) /* reset bytes number since we can not check a sign */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3963) rdata->got_bytes = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3964) /* FIXME: should this be counted toward the initiating task? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3965) task_io_account_read(rdata->got_bytes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3966) cifs_stats_bytes_read(tcon, rdata->got_bytes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3967) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3968) case MID_RESPONSE_MALFORMED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3969) credits.value = le16_to_cpu(shdr->CreditRequest);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3970) credits.instance = server->reconnect_instance;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3971) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3972) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3973) rdata->result = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3974) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3975) #ifdef CONFIG_CIFS_SMB_DIRECT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3976) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3977) * If this rdata has a memmory registered, the MR can be freed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3978) * MR needs to be freed as soon as I/O finishes to prevent deadlock
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3979) * because they have limited number and are used for future I/Os
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3980) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3981) if (rdata->mr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3982) smbd_deregister_mr(rdata->mr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3983) rdata->mr = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3984) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3985) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3986) if (rdata->result && rdata->result != -ENODATA) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3987) cifs_stats_fail_inc(tcon, SMB2_READ_HE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3988) trace_smb3_read_err(0 /* xid */,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3989) rdata->cfile->fid.persistent_fid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3990) tcon->tid, tcon->ses->Suid, rdata->offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3991) rdata->bytes, rdata->result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3992) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3993) trace_smb3_read_done(0 /* xid */,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3994) rdata->cfile->fid.persistent_fid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3995) tcon->tid, tcon->ses->Suid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3996) rdata->offset, rdata->got_bytes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3997)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3998) queue_work(cifsiod_wq, &rdata->work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3999) DeleteMidQEntry(mid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4000) add_credits(server, &credits, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4001) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4002)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4003) /* smb2_async_readv - send an async read, and set up mid to handle result */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4004) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4005) smb2_async_readv(struct cifs_readdata *rdata)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4006) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4007) int rc, flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4008) char *buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4009) struct smb2_sync_hdr *shdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4010) struct cifs_io_parms io_parms;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4011) struct smb_rqst rqst = { .rq_iov = rdata->iov,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4012) .rq_nvec = 1 };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4013) struct TCP_Server_Info *server;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4014) struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4015) unsigned int total_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4016)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4017) cifs_dbg(FYI, "%s: offset=%llu bytes=%u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4018) __func__, rdata->offset, rdata->bytes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4019)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4020) if (!rdata->server)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4021) rdata->server = cifs_pick_channel(tcon->ses);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4022)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4023) io_parms.tcon = tlink_tcon(rdata->cfile->tlink);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4024) io_parms.server = server = rdata->server;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4025) io_parms.offset = rdata->offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4026) io_parms.length = rdata->bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4027) io_parms.persistent_fid = rdata->cfile->fid.persistent_fid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4028) io_parms.volatile_fid = rdata->cfile->fid.volatile_fid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4029) io_parms.pid = rdata->pid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4030)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4031) rc = smb2_new_read_req(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4032) (void **) &buf, &total_len, &io_parms, rdata, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4033) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4034) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4035)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4036) if (smb3_encryption_required(io_parms.tcon))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4037) flags |= CIFS_TRANSFORM_REQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4038)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4039) rdata->iov[0].iov_base = buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4040) rdata->iov[0].iov_len = total_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4041)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4042) shdr = (struct smb2_sync_hdr *)buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4043)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4044) if (rdata->credits.value > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4045) shdr->CreditCharge = cpu_to_le16(DIV_ROUND_UP(rdata->bytes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4046) SMB2_MAX_BUFFER_SIZE));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4047) shdr->CreditRequest = cpu_to_le16(le16_to_cpu(shdr->CreditCharge) + 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4048)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4049) rc = adjust_credits(server, &rdata->credits, rdata->bytes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4050) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4051) goto async_readv_out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4052)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4053) flags |= CIFS_HAS_CREDITS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4054) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4055)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4056) kref_get(&rdata->refcount);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4057) rc = cifs_call_async(server, &rqst,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4058) cifs_readv_receive, smb2_readv_callback,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4059) smb3_handle_read_data, rdata, flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4060) &rdata->credits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4061) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4062) kref_put(&rdata->refcount, cifs_readdata_release);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4063) cifs_stats_fail_inc(io_parms.tcon, SMB2_READ_HE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4064) trace_smb3_read_err(0 /* xid */, io_parms.persistent_fid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4065) io_parms.tcon->tid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4066) io_parms.tcon->ses->Suid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4067) io_parms.offset, io_parms.length, rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4068) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4069)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4070) async_readv_out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4071) cifs_small_buf_release(buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4072) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4073) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4074)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4075) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4076) SMB2_read(const unsigned int xid, struct cifs_io_parms *io_parms,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4077) unsigned int *nbytes, char **buf, int *buf_type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4078) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4079) struct smb_rqst rqst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4080) int resp_buftype, rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4081) struct smb2_read_plain_req *req = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4082) struct smb2_read_rsp *rsp = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4083) struct kvec iov[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4084) struct kvec rsp_iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4085) unsigned int total_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4086) int flags = CIFS_LOG_ERROR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4087) struct cifs_ses *ses = io_parms->tcon->ses;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4088)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4089) if (!io_parms->server)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4090) io_parms->server = cifs_pick_channel(io_parms->tcon->ses);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4091)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4092) *nbytes = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4093) rc = smb2_new_read_req((void **)&req, &total_len, io_parms, NULL, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4094) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4095) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4096)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4097) if (smb3_encryption_required(io_parms->tcon))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4098) flags |= CIFS_TRANSFORM_REQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4099)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4100) iov[0].iov_base = (char *)req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4101) iov[0].iov_len = total_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4103) memset(&rqst, 0, sizeof(struct smb_rqst));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4104) rqst.rq_iov = iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4105) rqst.rq_nvec = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4107) rc = cifs_send_recv(xid, ses, io_parms->server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4108) &rqst, &resp_buftype, flags, &rsp_iov);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4109) rsp = (struct smb2_read_rsp *)rsp_iov.iov_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4111) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4112) if (rc != -ENODATA) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4113) cifs_stats_fail_inc(io_parms->tcon, SMB2_READ_HE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4114) cifs_dbg(VFS, "Send error in read = %d\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4115) trace_smb3_read_err(xid, req->PersistentFileId,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4116) io_parms->tcon->tid, ses->Suid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4117) io_parms->offset, io_parms->length,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4118) rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4119) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4120) trace_smb3_read_done(xid, req->PersistentFileId,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4121) io_parms->tcon->tid, ses->Suid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4122) io_parms->offset, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4123) free_rsp_buf(resp_buftype, rsp_iov.iov_base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4124) cifs_small_buf_release(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4125) return rc == -ENODATA ? 0 : rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4126) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4127) trace_smb3_read_done(xid, req->PersistentFileId,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4128) io_parms->tcon->tid, ses->Suid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4129) io_parms->offset, io_parms->length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4131) cifs_small_buf_release(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4133) *nbytes = le32_to_cpu(rsp->DataLength);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4134) if ((*nbytes > CIFS_MAX_MSGSIZE) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4135) (*nbytes > io_parms->length)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4136) cifs_dbg(FYI, "bad length %d for count %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4137) *nbytes, io_parms->length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4138) rc = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4139) *nbytes = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4140) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4142) if (*buf) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4143) memcpy(*buf, (char *)rsp + rsp->DataOffset, *nbytes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4144) free_rsp_buf(resp_buftype, rsp_iov.iov_base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4145) } else if (resp_buftype != CIFS_NO_BUFFER) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4146) *buf = rsp_iov.iov_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4147) if (resp_buftype == CIFS_SMALL_BUFFER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4148) *buf_type = CIFS_SMALL_BUFFER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4149) else if (resp_buftype == CIFS_LARGE_BUFFER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4150) *buf_type = CIFS_LARGE_BUFFER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4151) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4152) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4153) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4155) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4156) * Check the mid_state and signature on received buffer (if any), and queue the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4157) * workqueue completion task.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4158) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4159) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4160) smb2_writev_callback(struct mid_q_entry *mid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4161) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4162) struct cifs_writedata *wdata = mid->callback_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4163) struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4164) struct TCP_Server_Info *server = wdata->server;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4165) unsigned int written;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4166) struct smb2_write_rsp *rsp = (struct smb2_write_rsp *)mid->resp_buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4167) struct cifs_credits credits = { .value = 0, .instance = 0 };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4169) WARN_ONCE(wdata->server != mid->server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4170) "wdata server %p != mid server %p",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4171) wdata->server, mid->server);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4173) switch (mid->mid_state) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4174) case MID_RESPONSE_RECEIVED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4175) credits.value = le16_to_cpu(rsp->sync_hdr.CreditRequest);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4176) credits.instance = server->reconnect_instance;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4177) wdata->result = smb2_check_receive(mid, server, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4178) if (wdata->result != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4179) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4181) written = le32_to_cpu(rsp->DataLength);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4182) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4183) * Mask off high 16 bits when bytes written as returned
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4184) * by the server is greater than bytes requested by the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4185) * client. OS/2 servers are known to set incorrect
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4186) * CountHigh values.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4187) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4188) if (written > wdata->bytes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4189) written &= 0xFFFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4191) if (written < wdata->bytes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4192) wdata->result = -ENOSPC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4193) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4194) wdata->bytes = written;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4195) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4196) case MID_REQUEST_SUBMITTED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4197) case MID_RETRY_NEEDED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4198) wdata->result = -EAGAIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4199) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4200) case MID_RESPONSE_MALFORMED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4201) credits.value = le16_to_cpu(rsp->sync_hdr.CreditRequest);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4202) credits.instance = server->reconnect_instance;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4203) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4204) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4205) wdata->result = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4206) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4207) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4208) #ifdef CONFIG_CIFS_SMB_DIRECT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4209) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4210) * If this wdata has a memory registered, the MR can be freed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4211) * The number of MRs available is limited, it's important to recover
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4212) * used MR as soon as I/O is finished. Hold MR longer in the later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4213) * I/O process can possibly result in I/O deadlock due to lack of MR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4214) * to send request on I/O retry
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4215) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4216) if (wdata->mr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4217) smbd_deregister_mr(wdata->mr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4218) wdata->mr = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4219) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4220) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4221) if (wdata->result) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4222) cifs_stats_fail_inc(tcon, SMB2_WRITE_HE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4223) trace_smb3_write_err(0 /* no xid */,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4224) wdata->cfile->fid.persistent_fid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4225) tcon->tid, tcon->ses->Suid, wdata->offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4226) wdata->bytes, wdata->result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4227) if (wdata->result == -ENOSPC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4228) pr_warn_once("Out of space writing to %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4229) tcon->treeName);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4230) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4231) trace_smb3_write_done(0 /* no xid */,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4232) wdata->cfile->fid.persistent_fid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4233) tcon->tid, tcon->ses->Suid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4234) wdata->offset, wdata->bytes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4236) queue_work(cifsiod_wq, &wdata->work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4237) DeleteMidQEntry(mid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4238) add_credits(server, &credits, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4239) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4241) /* smb2_async_writev - send an async write, and set up mid to handle result */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4242) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4243) smb2_async_writev(struct cifs_writedata *wdata,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4244) void (*release)(struct kref *kref))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4245) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4246) int rc = -EACCES, flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4247) struct smb2_write_req *req = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4248) struct smb2_sync_hdr *shdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4249) struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4250) struct TCP_Server_Info *server = wdata->server;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4251) struct kvec iov[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4252) struct smb_rqst rqst = { };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4253) unsigned int total_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4254)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4255) if (!wdata->server)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4256) server = wdata->server = cifs_pick_channel(tcon->ses);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4257)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4258) rc = smb2_plain_req_init(SMB2_WRITE, tcon, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4259) (void **) &req, &total_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4260) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4261) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4263) if (smb3_encryption_required(tcon))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4264) flags |= CIFS_TRANSFORM_REQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4266) shdr = (struct smb2_sync_hdr *)req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4267) shdr->ProcessId = cpu_to_le32(wdata->cfile->pid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4269) req->PersistentFileId = wdata->cfile->fid.persistent_fid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4270) req->VolatileFileId = wdata->cfile->fid.volatile_fid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4271) req->WriteChannelInfoOffset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4272) req->WriteChannelInfoLength = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4273) req->Channel = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4274) req->Offset = cpu_to_le64(wdata->offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4275) req->DataOffset = cpu_to_le16(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4276) offsetof(struct smb2_write_req, Buffer));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4277) req->RemainingBytes = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4278)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4279) trace_smb3_write_enter(0 /* xid */, wdata->cfile->fid.persistent_fid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4280) tcon->tid, tcon->ses->Suid, wdata->offset, wdata->bytes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4281) #ifdef CONFIG_CIFS_SMB_DIRECT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4282) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4283) * If we want to do a server RDMA read, fill in and append
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4284) * smbd_buffer_descriptor_v1 to the end of write request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4285) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4286) if (server->rdma && !server->sign && wdata->bytes >=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4287) server->smbd_conn->rdma_readwrite_threshold) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4288)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4289) struct smbd_buffer_descriptor_v1 *v1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4290) bool need_invalidate = server->dialect == SMB30_PROT_ID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4292) wdata->mr = smbd_register_mr(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4293) server->smbd_conn, wdata->pages,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4294) wdata->nr_pages, wdata->page_offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4295) wdata->tailsz, false, need_invalidate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4296) if (!wdata->mr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4297) rc = -EAGAIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4298) goto async_writev_out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4299) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4300) req->Length = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4301) req->DataOffset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4302) if (wdata->nr_pages > 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4303) req->RemainingBytes =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4304) cpu_to_le32(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4305) (wdata->nr_pages - 1) * wdata->pagesz -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4306) wdata->page_offset + wdata->tailsz
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4307) );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4308) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4309) req->RemainingBytes = cpu_to_le32(wdata->tailsz);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4310) req->Channel = SMB2_CHANNEL_RDMA_V1_INVALIDATE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4311) if (need_invalidate)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4312) req->Channel = SMB2_CHANNEL_RDMA_V1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4313) req->WriteChannelInfoOffset =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4314) cpu_to_le16(offsetof(struct smb2_write_req, Buffer));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4315) req->WriteChannelInfoLength =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4316) cpu_to_le16(sizeof(struct smbd_buffer_descriptor_v1));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4317) v1 = (struct smbd_buffer_descriptor_v1 *) &req->Buffer[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4318) v1->offset = cpu_to_le64(wdata->mr->mr->iova);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4319) v1->token = cpu_to_le32(wdata->mr->mr->rkey);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4320) v1->length = cpu_to_le32(wdata->mr->mr->length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4321) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4322) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4323) iov[0].iov_len = total_len - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4324) iov[0].iov_base = (char *)req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4325)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4326) rqst.rq_iov = iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4327) rqst.rq_nvec = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4328) rqst.rq_pages = wdata->pages;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4329) rqst.rq_offset = wdata->page_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4330) rqst.rq_npages = wdata->nr_pages;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4331) rqst.rq_pagesz = wdata->pagesz;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4332) rqst.rq_tailsz = wdata->tailsz;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4333) #ifdef CONFIG_CIFS_SMB_DIRECT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4334) if (wdata->mr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4335) iov[0].iov_len += sizeof(struct smbd_buffer_descriptor_v1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4336) rqst.rq_npages = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4337) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4338) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4339) cifs_dbg(FYI, "async write at %llu %u bytes\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4340) wdata->offset, wdata->bytes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4341)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4342) #ifdef CONFIG_CIFS_SMB_DIRECT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4343) /* For RDMA read, I/O size is in RemainingBytes not in Length */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4344) if (!wdata->mr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4345) req->Length = cpu_to_le32(wdata->bytes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4346) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4347) req->Length = cpu_to_le32(wdata->bytes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4348) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4349)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4350) if (wdata->credits.value > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4351) shdr->CreditCharge = cpu_to_le16(DIV_ROUND_UP(wdata->bytes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4352) SMB2_MAX_BUFFER_SIZE));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4353) shdr->CreditRequest = cpu_to_le16(le16_to_cpu(shdr->CreditCharge) + 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4354)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4355) rc = adjust_credits(server, &wdata->credits, wdata->bytes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4356) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4357) goto async_writev_out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4358)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4359) flags |= CIFS_HAS_CREDITS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4360) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4361)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4362) kref_get(&wdata->refcount);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4363) rc = cifs_call_async(server, &rqst, NULL, smb2_writev_callback, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4364) wdata, flags, &wdata->credits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4365)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4366) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4367) trace_smb3_write_err(0 /* no xid */, req->PersistentFileId,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4368) tcon->tid, tcon->ses->Suid, wdata->offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4369) wdata->bytes, rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4370) kref_put(&wdata->refcount, release);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4371) cifs_stats_fail_inc(tcon, SMB2_WRITE_HE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4372) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4373)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4374) async_writev_out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4375) cifs_small_buf_release(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4376) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4377) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4378)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4379) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4380) * SMB2_write function gets iov pointer to kvec array with n_vec as a length.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4381) * The length field from io_parms must be at least 1 and indicates a number of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4382) * elements with data to write that begins with position 1 in iov array. All
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4383) * data length is specified by count.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4384) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4385) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4386) SMB2_write(const unsigned int xid, struct cifs_io_parms *io_parms,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4387) unsigned int *nbytes, struct kvec *iov, int n_vec)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4388) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4389) struct smb_rqst rqst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4390) int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4391) struct smb2_write_req *req = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4392) struct smb2_write_rsp *rsp = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4393) int resp_buftype;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4394) struct kvec rsp_iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4395) int flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4396) unsigned int total_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4397) struct TCP_Server_Info *server;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4398)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4399) *nbytes = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4400)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4401) if (n_vec < 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4402) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4403)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4404) if (!io_parms->server)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4405) io_parms->server = cifs_pick_channel(io_parms->tcon->ses);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4406) server = io_parms->server;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4407) if (server == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4408) return -ECONNABORTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4409)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4410) rc = smb2_plain_req_init(SMB2_WRITE, io_parms->tcon, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4411) (void **) &req, &total_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4412) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4413) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4414)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4415) if (smb3_encryption_required(io_parms->tcon))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4416) flags |= CIFS_TRANSFORM_REQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4417)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4418) req->sync_hdr.ProcessId = cpu_to_le32(io_parms->pid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4419)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4420) req->PersistentFileId = io_parms->persistent_fid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4421) req->VolatileFileId = io_parms->volatile_fid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4422) req->WriteChannelInfoOffset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4423) req->WriteChannelInfoLength = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4424) req->Channel = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4425) req->Length = cpu_to_le32(io_parms->length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4426) req->Offset = cpu_to_le64(io_parms->offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4427) req->DataOffset = cpu_to_le16(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4428) offsetof(struct smb2_write_req, Buffer));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4429) req->RemainingBytes = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4430)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4431) trace_smb3_write_enter(xid, io_parms->persistent_fid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4432) io_parms->tcon->tid, io_parms->tcon->ses->Suid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4433) io_parms->offset, io_parms->length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4434)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4435) iov[0].iov_base = (char *)req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4436) /* 1 for Buffer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4437) iov[0].iov_len = total_len - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4438)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4439) memset(&rqst, 0, sizeof(struct smb_rqst));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4440) rqst.rq_iov = iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4441) rqst.rq_nvec = n_vec + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4442)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4443) rc = cifs_send_recv(xid, io_parms->tcon->ses, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4444) &rqst,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4445) &resp_buftype, flags, &rsp_iov);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4446) rsp = (struct smb2_write_rsp *)rsp_iov.iov_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4447)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4448) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4449) trace_smb3_write_err(xid, req->PersistentFileId,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4450) io_parms->tcon->tid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4451) io_parms->tcon->ses->Suid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4452) io_parms->offset, io_parms->length, rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4453) cifs_stats_fail_inc(io_parms->tcon, SMB2_WRITE_HE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4454) cifs_dbg(VFS, "Send error in write = %d\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4455) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4456) *nbytes = le32_to_cpu(rsp->DataLength);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4457) trace_smb3_write_done(xid, req->PersistentFileId,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4458) io_parms->tcon->tid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4459) io_parms->tcon->ses->Suid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4460) io_parms->offset, *nbytes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4461) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4462)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4463) cifs_small_buf_release(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4464) free_rsp_buf(resp_buftype, rsp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4465) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4466) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4467)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4468) int posix_info_sid_size(const void *beg, const void *end)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4469) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4470) size_t subauth;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4471) int total;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4472)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4473) if (beg + 1 > end)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4474) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4475)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4476) subauth = *(u8 *)(beg+1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4477) if (subauth < 1 || subauth > 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4478) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4479)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4480) total = 1 + 1 + 6 + 4*subauth;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4481) if (beg + total > end)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4482) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4483)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4484) return total;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4485) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4486)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4487) int posix_info_parse(const void *beg, const void *end,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4488) struct smb2_posix_info_parsed *out)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4489)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4490) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4491) int total_len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4492) int sid_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4493) int name_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4494) const void *owner_sid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4495) const void *group_sid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4496) const void *name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4497)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4498) /* if no end bound given, assume payload to be correct */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4499) if (!end) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4500) const struct smb2_posix_info *p = beg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4501)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4502) end = beg + le32_to_cpu(p->NextEntryOffset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4503) /* last element will have a 0 offset, pick a sensible bound */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4504) if (end == beg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4505) end += 0xFFFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4506) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4507)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4508) /* check base buf */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4509) if (beg + sizeof(struct smb2_posix_info) > end)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4510) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4511) total_len = sizeof(struct smb2_posix_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4512)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4513) /* check owner sid */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4514) owner_sid = beg + total_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4515) sid_len = posix_info_sid_size(owner_sid, end);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4516) if (sid_len < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4517) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4518) total_len += sid_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4519)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4520) /* check group sid */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4521) group_sid = beg + total_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4522) sid_len = posix_info_sid_size(group_sid, end);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4523) if (sid_len < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4524) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4525) total_len += sid_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4526)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4527) /* check name len */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4528) if (beg + total_len + 4 > end)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4529) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4530) name_len = le32_to_cpu(*(__le32 *)(beg + total_len));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4531) if (name_len < 1 || name_len > 0xFFFF)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4532) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4533) total_len += 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4534)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4535) /* check name */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4536) name = beg + total_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4537) if (name + name_len > end)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4538) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4539) total_len += name_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4540)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4541) if (out) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4542) out->base = beg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4543) out->size = total_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4544) out->name_len = name_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4545) out->name = name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4546) memcpy(&out->owner, owner_sid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4547) posix_info_sid_size(owner_sid, end));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4548) memcpy(&out->group, group_sid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4549) posix_info_sid_size(group_sid, end));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4550) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4551) return total_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4552) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4553)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4554) static int posix_info_extra_size(const void *beg, const void *end)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4555) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4556) int len = posix_info_parse(beg, end, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4557)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4558) if (len < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4559) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4560) return len - sizeof(struct smb2_posix_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4561) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4562)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4563) static unsigned int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4564) num_entries(int infotype, char *bufstart, char *end_of_buf, char **lastentry,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4565) size_t size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4566) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4567) int len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4568) unsigned int entrycount = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4569) unsigned int next_offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4570) char *entryptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4571) FILE_DIRECTORY_INFO *dir_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4572)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4573) if (bufstart == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4574) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4575)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4576) entryptr = bufstart;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4577)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4578) while (1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4579) if (entryptr + next_offset < entryptr ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4580) entryptr + next_offset > end_of_buf ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4581) entryptr + next_offset + size > end_of_buf) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4582) cifs_dbg(VFS, "malformed search entry would overflow\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4583) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4584) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4585)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4586) entryptr = entryptr + next_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4587) dir_info = (FILE_DIRECTORY_INFO *)entryptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4588)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4589) if (infotype == SMB_FIND_FILE_POSIX_INFO)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4590) len = posix_info_extra_size(entryptr, end_of_buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4591) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4592) len = le32_to_cpu(dir_info->FileNameLength);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4593)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4594) if (len < 0 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4595) entryptr + len < entryptr ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4596) entryptr + len > end_of_buf ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4597) entryptr + len + size > end_of_buf) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4598) cifs_dbg(VFS, "directory entry name would overflow frame end of buf %p\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4599) end_of_buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4600) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4601) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4602)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4603) *lastentry = entryptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4604) entrycount++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4605)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4606) next_offset = le32_to_cpu(dir_info->NextEntryOffset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4607) if (!next_offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4608) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4609) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4610)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4611) return entrycount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4612) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4613)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4614) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4615) * Readdir/FindFirst
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4616) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4617) int SMB2_query_directory_init(const unsigned int xid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4618) struct cifs_tcon *tcon,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4619) struct TCP_Server_Info *server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4620) struct smb_rqst *rqst,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4621) u64 persistent_fid, u64 volatile_fid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4622) int index, int info_level)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4623) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4624) struct smb2_query_directory_req *req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4625) unsigned char *bufptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4626) __le16 asteriks = cpu_to_le16('*');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4627) unsigned int output_size = CIFSMaxBufSize -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4628) MAX_SMB2_CREATE_RESPONSE_SIZE -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4629) MAX_SMB2_CLOSE_RESPONSE_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4630) unsigned int total_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4631) struct kvec *iov = rqst->rq_iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4632) int len, rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4633)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4634) rc = smb2_plain_req_init(SMB2_QUERY_DIRECTORY, tcon, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4635) (void **) &req, &total_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4636) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4637) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4638)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4639) switch (info_level) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4640) case SMB_FIND_FILE_DIRECTORY_INFO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4641) req->FileInformationClass = FILE_DIRECTORY_INFORMATION;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4642) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4643) case SMB_FIND_FILE_ID_FULL_DIR_INFO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4644) req->FileInformationClass = FILEID_FULL_DIRECTORY_INFORMATION;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4645) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4646) case SMB_FIND_FILE_POSIX_INFO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4647) req->FileInformationClass = SMB_FIND_FILE_POSIX_INFO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4648) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4649) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4650) cifs_tcon_dbg(VFS, "info level %u isn't supported\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4651) info_level);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4652) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4653) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4654)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4655) req->FileIndex = cpu_to_le32(index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4656) req->PersistentFileId = persistent_fid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4657) req->VolatileFileId = volatile_fid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4658)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4659) len = 0x2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4660) bufptr = req->Buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4661) memcpy(bufptr, &asteriks, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4662)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4663) req->FileNameOffset =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4664) cpu_to_le16(sizeof(struct smb2_query_directory_req) - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4665) req->FileNameLength = cpu_to_le16(len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4666) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4667) * BB could be 30 bytes or so longer if we used SMB2 specific
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4668) * buffer lengths, but this is safe and close enough.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4669) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4670) output_size = min_t(unsigned int, output_size, server->maxBuf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4671) output_size = min_t(unsigned int, output_size, 2 << 15);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4672) req->OutputBufferLength = cpu_to_le32(output_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4673)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4674) iov[0].iov_base = (char *)req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4675) /* 1 for Buffer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4676) iov[0].iov_len = total_len - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4677)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4678) iov[1].iov_base = (char *)(req->Buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4679) iov[1].iov_len = len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4680)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4681) trace_smb3_query_dir_enter(xid, persistent_fid, tcon->tid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4682) tcon->ses->Suid, index, output_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4683)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4684) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4685) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4686)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4687) void SMB2_query_directory_free(struct smb_rqst *rqst)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4688) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4689) if (rqst && rqst->rq_iov) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4690) cifs_small_buf_release(rqst->rq_iov[0].iov_base); /* request */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4691) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4692) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4693)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4694) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4695) smb2_parse_query_directory(struct cifs_tcon *tcon,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4696) struct kvec *rsp_iov,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4697) int resp_buftype,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4698) struct cifs_search_info *srch_inf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4699) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4700) struct smb2_query_directory_rsp *rsp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4701) size_t info_buf_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4702) char *end_of_smb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4703) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4704)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4705) rsp = (struct smb2_query_directory_rsp *)rsp_iov->iov_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4706)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4707) switch (srch_inf->info_level) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4708) case SMB_FIND_FILE_DIRECTORY_INFO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4709) info_buf_size = sizeof(FILE_DIRECTORY_INFO) - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4710) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4711) case SMB_FIND_FILE_ID_FULL_DIR_INFO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4712) info_buf_size = sizeof(SEARCH_ID_FULL_DIR_INFO) - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4713) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4714) case SMB_FIND_FILE_POSIX_INFO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4715) /* note that posix payload are variable size */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4716) info_buf_size = sizeof(struct smb2_posix_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4717) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4718) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4719) cifs_tcon_dbg(VFS, "info level %u isn't supported\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4720) srch_inf->info_level);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4721) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4722) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4723)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4724) rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4725) le32_to_cpu(rsp->OutputBufferLength), rsp_iov,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4726) info_buf_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4727) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4728) cifs_tcon_dbg(VFS, "bad info payload");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4729) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4730) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4731)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4732) srch_inf->unicode = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4733)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4734) if (srch_inf->ntwrk_buf_start) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4735) if (srch_inf->smallBuf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4736) cifs_small_buf_release(srch_inf->ntwrk_buf_start);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4737) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4738) cifs_buf_release(srch_inf->ntwrk_buf_start);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4739) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4740) srch_inf->ntwrk_buf_start = (char *)rsp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4741) srch_inf->srch_entries_start = srch_inf->last_entry =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4742) (char *)rsp + le16_to_cpu(rsp->OutputBufferOffset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4743) end_of_smb = rsp_iov->iov_len + (char *)rsp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4744)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4745) srch_inf->entries_in_buffer = num_entries(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4746) srch_inf->info_level,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4747) srch_inf->srch_entries_start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4748) end_of_smb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4749) &srch_inf->last_entry,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4750) info_buf_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4751)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4752) srch_inf->index_of_last_entry += srch_inf->entries_in_buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4753) cifs_dbg(FYI, "num entries %d last_index %lld srch start %p srch end %p\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4754) srch_inf->entries_in_buffer, srch_inf->index_of_last_entry,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4755) srch_inf->srch_entries_start, srch_inf->last_entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4756) if (resp_buftype == CIFS_LARGE_BUFFER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4757) srch_inf->smallBuf = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4758) else if (resp_buftype == CIFS_SMALL_BUFFER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4759) srch_inf->smallBuf = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4760) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4761) cifs_tcon_dbg(VFS, "Invalid search buffer type\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4762)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4763) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4764) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4765)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4766) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4767) SMB2_query_directory(const unsigned int xid, struct cifs_tcon *tcon,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4768) u64 persistent_fid, u64 volatile_fid, int index,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4769) struct cifs_search_info *srch_inf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4770) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4771) struct smb_rqst rqst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4772) struct kvec iov[SMB2_QUERY_DIRECTORY_IOV_SIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4773) struct smb2_query_directory_rsp *rsp = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4774) int resp_buftype = CIFS_NO_BUFFER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4775) struct kvec rsp_iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4776) int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4777) struct cifs_ses *ses = tcon->ses;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4778) struct TCP_Server_Info *server = cifs_pick_channel(ses);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4779) int flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4780)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4781) if (!ses || !(ses->server))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4782) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4783)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4784) if (smb3_encryption_required(tcon))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4785) flags |= CIFS_TRANSFORM_REQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4786)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4787) memset(&rqst, 0, sizeof(struct smb_rqst));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4788) memset(&iov, 0, sizeof(iov));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4789) rqst.rq_iov = iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4790) rqst.rq_nvec = SMB2_QUERY_DIRECTORY_IOV_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4791)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4792) rc = SMB2_query_directory_init(xid, tcon, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4793) &rqst, persistent_fid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4794) volatile_fid, index,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4795) srch_inf->info_level);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4796) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4797) goto qdir_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4798)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4799) rc = cifs_send_recv(xid, ses, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4800) &rqst, &resp_buftype, flags, &rsp_iov);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4801) rsp = (struct smb2_query_directory_rsp *)rsp_iov.iov_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4802)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4803) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4804) if (rc == -ENODATA &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4805) rsp->sync_hdr.Status == STATUS_NO_MORE_FILES) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4806) trace_smb3_query_dir_done(xid, persistent_fid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4807) tcon->tid, tcon->ses->Suid, index, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4808) srch_inf->endOfSearch = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4809) rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4810) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4811) trace_smb3_query_dir_err(xid, persistent_fid, tcon->tid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4812) tcon->ses->Suid, index, 0, rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4813) cifs_stats_fail_inc(tcon, SMB2_QUERY_DIRECTORY_HE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4814) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4815) goto qdir_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4816) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4817)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4818) rc = smb2_parse_query_directory(tcon, &rsp_iov, resp_buftype,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4819) srch_inf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4820) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4821) trace_smb3_query_dir_err(xid, persistent_fid, tcon->tid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4822) tcon->ses->Suid, index, 0, rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4823) goto qdir_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4824) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4825) resp_buftype = CIFS_NO_BUFFER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4826)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4827) trace_smb3_query_dir_done(xid, persistent_fid, tcon->tid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4828) tcon->ses->Suid, index, srch_inf->entries_in_buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4829)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4830) qdir_exit:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4831) SMB2_query_directory_free(&rqst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4832) free_rsp_buf(resp_buftype, rsp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4833) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4834) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4835)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4836) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4837) SMB2_set_info_init(struct cifs_tcon *tcon, struct TCP_Server_Info *server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4838) struct smb_rqst *rqst,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4839) u64 persistent_fid, u64 volatile_fid, u32 pid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4840) u8 info_class, u8 info_type, u32 additional_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4841) void **data, unsigned int *size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4842) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4843) struct smb2_set_info_req *req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4844) struct kvec *iov = rqst->rq_iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4845) unsigned int i, total_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4846) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4847)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4848) rc = smb2_plain_req_init(SMB2_SET_INFO, tcon, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4849) (void **) &req, &total_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4850) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4851) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4852)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4853) req->sync_hdr.ProcessId = cpu_to_le32(pid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4854) req->InfoType = info_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4855) req->FileInfoClass = info_class;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4856) req->PersistentFileId = persistent_fid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4857) req->VolatileFileId = volatile_fid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4858) req->AdditionalInformation = cpu_to_le32(additional_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4859)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4860) req->BufferOffset =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4861) cpu_to_le16(sizeof(struct smb2_set_info_req) - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4862) req->BufferLength = cpu_to_le32(*size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4863)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4864) memcpy(req->Buffer, *data, *size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4865) total_len += *size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4866)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4867) iov[0].iov_base = (char *)req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4868) /* 1 for Buffer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4869) iov[0].iov_len = total_len - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4870)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4871) for (i = 1; i < rqst->rq_nvec; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4872) le32_add_cpu(&req->BufferLength, size[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4873) iov[i].iov_base = (char *)data[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4874) iov[i].iov_len = size[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4875) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4876)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4877) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4878) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4879)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4880) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4881) SMB2_set_info_free(struct smb_rqst *rqst)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4882) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4883) if (rqst && rqst->rq_iov)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4884) cifs_buf_release(rqst->rq_iov[0].iov_base); /* request */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4885) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4886)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4887) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4888) send_set_info(const unsigned int xid, struct cifs_tcon *tcon,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4889) u64 persistent_fid, u64 volatile_fid, u32 pid, u8 info_class,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4890) u8 info_type, u32 additional_info, unsigned int num,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4891) void **data, unsigned int *size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4892) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4893) struct smb_rqst rqst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4894) struct smb2_set_info_rsp *rsp = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4895) struct kvec *iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4896) struct kvec rsp_iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4897) int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4898) int resp_buftype;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4899) struct cifs_ses *ses = tcon->ses;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4900) struct TCP_Server_Info *server = cifs_pick_channel(ses);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4901) int flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4902)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4903) if (!ses || !server)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4904) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4905)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4906) if (!num)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4907) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4908)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4909) if (smb3_encryption_required(tcon))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4910) flags |= CIFS_TRANSFORM_REQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4911)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4912) iov = kmalloc_array(num, sizeof(struct kvec), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4913) if (!iov)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4914) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4915)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4916) memset(&rqst, 0, sizeof(struct smb_rqst));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4917) rqst.rq_iov = iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4918) rqst.rq_nvec = num;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4919)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4920) rc = SMB2_set_info_init(tcon, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4921) &rqst, persistent_fid, volatile_fid, pid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4922) info_class, info_type, additional_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4923) data, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4924) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4925) kfree(iov);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4926) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4927) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4928)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4929)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4930) rc = cifs_send_recv(xid, ses, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4931) &rqst, &resp_buftype, flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4932) &rsp_iov);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4933) SMB2_set_info_free(&rqst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4934) rsp = (struct smb2_set_info_rsp *)rsp_iov.iov_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4935)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4936) if (rc != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4937) cifs_stats_fail_inc(tcon, SMB2_SET_INFO_HE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4938) trace_smb3_set_info_err(xid, persistent_fid, tcon->tid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4939) ses->Suid, info_class, (__u32)info_type, rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4940) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4941)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4942) free_rsp_buf(resp_buftype, rsp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4943) kfree(iov);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4944) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4945) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4946)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4947) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4948) SMB2_set_eof(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4949) u64 volatile_fid, u32 pid, __le64 *eof)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4950) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4951) struct smb2_file_eof_info info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4952) void *data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4953) unsigned int size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4954)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4955) info.EndOfFile = *eof;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4956)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4957) data = &info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4958) size = sizeof(struct smb2_file_eof_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4959)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4960) return send_set_info(xid, tcon, persistent_fid, volatile_fid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4961) pid, FILE_END_OF_FILE_INFORMATION, SMB2_O_INFO_FILE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4962) 0, 1, &data, &size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4963) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4964)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4965) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4966) SMB2_set_acl(const unsigned int xid, struct cifs_tcon *tcon,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4967) u64 persistent_fid, u64 volatile_fid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4968) struct cifs_ntsd *pnntsd, int pacllen, int aclflag)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4969) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4970) return send_set_info(xid, tcon, persistent_fid, volatile_fid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4971) current->tgid, 0, SMB2_O_INFO_SECURITY, aclflag,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4972) 1, (void **)&pnntsd, &pacllen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4973) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4974)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4975) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4976) SMB2_set_ea(const unsigned int xid, struct cifs_tcon *tcon,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4977) u64 persistent_fid, u64 volatile_fid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4978) struct smb2_file_full_ea_info *buf, int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4979) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4980) return send_set_info(xid, tcon, persistent_fid, volatile_fid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4981) current->tgid, FILE_FULL_EA_INFORMATION, SMB2_O_INFO_FILE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4982) 0, 1, (void **)&buf, &len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4983) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4984)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4985) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4986) SMB2_oplock_break(const unsigned int xid, struct cifs_tcon *tcon,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4987) const u64 persistent_fid, const u64 volatile_fid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4988) __u8 oplock_level)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4989) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4990) struct smb_rqst rqst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4991) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4992) struct smb2_oplock_break *req = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4993) struct cifs_ses *ses = tcon->ses;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4994) struct TCP_Server_Info *server = cifs_pick_channel(ses);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4995) int flags = CIFS_OBREAK_OP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4996) unsigned int total_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4997) struct kvec iov[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4998) struct kvec rsp_iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4999) int resp_buf_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5000)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5001) cifs_dbg(FYI, "SMB2_oplock_break\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5002) rc = smb2_plain_req_init(SMB2_OPLOCK_BREAK, tcon, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5003) (void **) &req, &total_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5004) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5005) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5006)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5007) if (smb3_encryption_required(tcon))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5008) flags |= CIFS_TRANSFORM_REQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5009)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5010) req->VolatileFid = volatile_fid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5011) req->PersistentFid = persistent_fid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5012) req->OplockLevel = oplock_level;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5013) req->sync_hdr.CreditRequest = cpu_to_le16(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5014)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5015) flags |= CIFS_NO_RSP_BUF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5016)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5017) iov[0].iov_base = (char *)req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5018) iov[0].iov_len = total_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5019)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5020) memset(&rqst, 0, sizeof(struct smb_rqst));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5021) rqst.rq_iov = iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5022) rqst.rq_nvec = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5023)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5024) rc = cifs_send_recv(xid, ses, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5025) &rqst, &resp_buf_type, flags, &rsp_iov);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5026) cifs_small_buf_release(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5027)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5028) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5029) cifs_stats_fail_inc(tcon, SMB2_OPLOCK_BREAK_HE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5030) cifs_dbg(FYI, "Send error in Oplock Break = %d\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5031) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5032)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5033) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5034) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5035)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5036) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5037) smb2_copy_fs_info_to_kstatfs(struct smb2_fs_full_size_info *pfs_inf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5038) struct kstatfs *kst)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5039) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5040) kst->f_bsize = le32_to_cpu(pfs_inf->BytesPerSector) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5041) le32_to_cpu(pfs_inf->SectorsPerAllocationUnit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5042) kst->f_blocks = le64_to_cpu(pfs_inf->TotalAllocationUnits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5043) kst->f_bfree = kst->f_bavail =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5044) le64_to_cpu(pfs_inf->CallerAvailableAllocationUnits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5045) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5046) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5047)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5048) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5049) copy_posix_fs_info_to_kstatfs(FILE_SYSTEM_POSIX_INFO *response_data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5050) struct kstatfs *kst)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5051) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5052) kst->f_bsize = le32_to_cpu(response_data->BlockSize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5053) kst->f_blocks = le64_to_cpu(response_data->TotalBlocks);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5054) kst->f_bfree = le64_to_cpu(response_data->BlocksAvail);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5055) if (response_data->UserBlocksAvail == cpu_to_le64(-1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5056) kst->f_bavail = kst->f_bfree;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5057) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5058) kst->f_bavail = le64_to_cpu(response_data->UserBlocksAvail);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5059) if (response_data->TotalFileNodes != cpu_to_le64(-1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5060) kst->f_files = le64_to_cpu(response_data->TotalFileNodes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5061) if (response_data->FreeFileNodes != cpu_to_le64(-1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5062) kst->f_ffree = le64_to_cpu(response_data->FreeFileNodes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5063)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5064) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5065) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5066)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5067) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5068) build_qfs_info_req(struct kvec *iov, struct cifs_tcon *tcon,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5069) struct TCP_Server_Info *server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5070) int level, int outbuf_len, u64 persistent_fid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5071) u64 volatile_fid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5072) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5073) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5074) struct smb2_query_info_req *req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5075) unsigned int total_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5076)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5077) cifs_dbg(FYI, "Query FSInfo level %d\n", level);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5078)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5079) if ((tcon->ses == NULL) || server == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5080) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5081)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5082) rc = smb2_plain_req_init(SMB2_QUERY_INFO, tcon, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5083) (void **) &req, &total_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5084) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5085) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5086)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5087) req->InfoType = SMB2_O_INFO_FILESYSTEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5088) req->FileInfoClass = level;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5089) req->PersistentFileId = persistent_fid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5090) req->VolatileFileId = volatile_fid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5091) /* 1 for pad */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5092) req->InputBufferOffset =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5093) cpu_to_le16(sizeof(struct smb2_query_info_req) - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5094) req->OutputBufferLength = cpu_to_le32(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5095) outbuf_len + sizeof(struct smb2_query_info_rsp) - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5096)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5097) iov->iov_base = (char *)req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5098) iov->iov_len = total_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5099) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5100) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5102) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5103) SMB311_posix_qfs_info(const unsigned int xid, struct cifs_tcon *tcon,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5104) u64 persistent_fid, u64 volatile_fid, struct kstatfs *fsdata)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5105) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5106) struct smb_rqst rqst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5107) struct smb2_query_info_rsp *rsp = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5108) struct kvec iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5109) struct kvec rsp_iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5110) int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5111) int resp_buftype;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5112) struct cifs_ses *ses = tcon->ses;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5113) struct TCP_Server_Info *server = cifs_pick_channel(ses);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5114) FILE_SYSTEM_POSIX_INFO *info = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5115) int flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5117) rc = build_qfs_info_req(&iov, tcon, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5118) FS_POSIX_INFORMATION,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5119) sizeof(FILE_SYSTEM_POSIX_INFO),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5120) persistent_fid, volatile_fid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5121) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5122) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5124) if (smb3_encryption_required(tcon))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5125) flags |= CIFS_TRANSFORM_REQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5127) memset(&rqst, 0, sizeof(struct smb_rqst));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5128) rqst.rq_iov = &iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5129) rqst.rq_nvec = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5131) rc = cifs_send_recv(xid, ses, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5132) &rqst, &resp_buftype, flags, &rsp_iov);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5133) cifs_small_buf_release(iov.iov_base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5134) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5135) cifs_stats_fail_inc(tcon, SMB2_QUERY_INFO_HE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5136) goto posix_qfsinf_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5137) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5138) rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5140) info = (FILE_SYSTEM_POSIX_INFO *)(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5141) le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5142) rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5143) le32_to_cpu(rsp->OutputBufferLength), &rsp_iov,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5144) sizeof(FILE_SYSTEM_POSIX_INFO));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5145) if (!rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5146) copy_posix_fs_info_to_kstatfs(info, fsdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5148) posix_qfsinf_exit:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5149) free_rsp_buf(resp_buftype, rsp_iov.iov_base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5150) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5151) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5152)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5153) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5154) SMB2_QFS_info(const unsigned int xid, struct cifs_tcon *tcon,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5155) u64 persistent_fid, u64 volatile_fid, struct kstatfs *fsdata)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5156) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5157) struct smb_rqst rqst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5158) struct smb2_query_info_rsp *rsp = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5159) struct kvec iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5160) struct kvec rsp_iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5161) int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5162) int resp_buftype;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5163) struct cifs_ses *ses = tcon->ses;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5164) struct TCP_Server_Info *server = cifs_pick_channel(ses);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5165) struct smb2_fs_full_size_info *info = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5166) int flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5168) rc = build_qfs_info_req(&iov, tcon, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5169) FS_FULL_SIZE_INFORMATION,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5170) sizeof(struct smb2_fs_full_size_info),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5171) persistent_fid, volatile_fid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5172) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5173) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5175) if (smb3_encryption_required(tcon))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5176) flags |= CIFS_TRANSFORM_REQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5177)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5178) memset(&rqst, 0, sizeof(struct smb_rqst));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5179) rqst.rq_iov = &iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5180) rqst.rq_nvec = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5182) rc = cifs_send_recv(xid, ses, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5183) &rqst, &resp_buftype, flags, &rsp_iov);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5184) cifs_small_buf_release(iov.iov_base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5185) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5186) cifs_stats_fail_inc(tcon, SMB2_QUERY_INFO_HE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5187) goto qfsinf_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5188) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5189) rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5191) info = (struct smb2_fs_full_size_info *)(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5192) le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5193) rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5194) le32_to_cpu(rsp->OutputBufferLength), &rsp_iov,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5195) sizeof(struct smb2_fs_full_size_info));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5196) if (!rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5197) smb2_copy_fs_info_to_kstatfs(info, fsdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5198)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5199) qfsinf_exit:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5200) free_rsp_buf(resp_buftype, rsp_iov.iov_base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5201) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5202) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5204) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5205) SMB2_QFS_attr(const unsigned int xid, struct cifs_tcon *tcon,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5206) u64 persistent_fid, u64 volatile_fid, int level)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5207) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5208) struct smb_rqst rqst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5209) struct smb2_query_info_rsp *rsp = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5210) struct kvec iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5211) struct kvec rsp_iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5212) int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5213) int resp_buftype, max_len, min_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5214) struct cifs_ses *ses = tcon->ses;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5215) struct TCP_Server_Info *server = cifs_pick_channel(ses);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5216) unsigned int rsp_len, offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5217) int flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5219) if (level == FS_DEVICE_INFORMATION) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5220) max_len = sizeof(FILE_SYSTEM_DEVICE_INFO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5221) min_len = sizeof(FILE_SYSTEM_DEVICE_INFO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5222) } else if (level == FS_ATTRIBUTE_INFORMATION) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5223) max_len = sizeof(FILE_SYSTEM_ATTRIBUTE_INFO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5224) min_len = MIN_FS_ATTR_INFO_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5225) } else if (level == FS_SECTOR_SIZE_INFORMATION) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5226) max_len = sizeof(struct smb3_fs_ss_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5227) min_len = sizeof(struct smb3_fs_ss_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5228) } else if (level == FS_VOLUME_INFORMATION) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5229) max_len = sizeof(struct smb3_fs_vol_info) + MAX_VOL_LABEL_LEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5230) min_len = sizeof(struct smb3_fs_vol_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5231) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5232) cifs_dbg(FYI, "Invalid qfsinfo level %d\n", level);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5233) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5234) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5236) rc = build_qfs_info_req(&iov, tcon, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5237) level, max_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5238) persistent_fid, volatile_fid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5239) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5240) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5241)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5242) if (smb3_encryption_required(tcon))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5243) flags |= CIFS_TRANSFORM_REQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5244)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5245) memset(&rqst, 0, sizeof(struct smb_rqst));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5246) rqst.rq_iov = &iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5247) rqst.rq_nvec = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5249) rc = cifs_send_recv(xid, ses, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5250) &rqst, &resp_buftype, flags, &rsp_iov);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5251) cifs_small_buf_release(iov.iov_base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5252) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5253) cifs_stats_fail_inc(tcon, SMB2_QUERY_INFO_HE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5254) goto qfsattr_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5255) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5256) rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5257)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5258) rsp_len = le32_to_cpu(rsp->OutputBufferLength);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5259) offset = le16_to_cpu(rsp->OutputBufferOffset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5260) rc = smb2_validate_iov(offset, rsp_len, &rsp_iov, min_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5261) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5262) goto qfsattr_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5264) if (level == FS_ATTRIBUTE_INFORMATION)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5265) memcpy(&tcon->fsAttrInfo, offset
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5266) + (char *)rsp, min_t(unsigned int,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5267) rsp_len, max_len));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5268) else if (level == FS_DEVICE_INFORMATION)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5269) memcpy(&tcon->fsDevInfo, offset
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5270) + (char *)rsp, sizeof(FILE_SYSTEM_DEVICE_INFO));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5271) else if (level == FS_SECTOR_SIZE_INFORMATION) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5272) struct smb3_fs_ss_info *ss_info = (struct smb3_fs_ss_info *)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5273) (offset + (char *)rsp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5274) tcon->ss_flags = le32_to_cpu(ss_info->Flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5275) tcon->perf_sector_size =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5276) le32_to_cpu(ss_info->PhysicalBytesPerSectorForPerf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5277) } else if (level == FS_VOLUME_INFORMATION) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5278) struct smb3_fs_vol_info *vol_info = (struct smb3_fs_vol_info *)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5279) (offset + (char *)rsp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5280) tcon->vol_serial_number = vol_info->VolumeSerialNumber;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5281) tcon->vol_create_time = vol_info->VolumeCreationTime;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5282) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5283)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5284) qfsattr_exit:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5285) free_rsp_buf(resp_buftype, rsp_iov.iov_base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5286) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5287) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5288)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5289) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5290) smb2_lockv(const unsigned int xid, struct cifs_tcon *tcon,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5291) const __u64 persist_fid, const __u64 volatile_fid, const __u32 pid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5292) const __u32 num_lock, struct smb2_lock_element *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5293) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5294) struct smb_rqst rqst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5295) int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5296) struct smb2_lock_req *req = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5297) struct kvec iov[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5298) struct kvec rsp_iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5299) int resp_buf_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5300) unsigned int count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5301) int flags = CIFS_NO_RSP_BUF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5302) unsigned int total_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5303) struct TCP_Server_Info *server = cifs_pick_channel(tcon->ses);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5304)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5305) cifs_dbg(FYI, "smb2_lockv num lock %d\n", num_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5306)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5307) rc = smb2_plain_req_init(SMB2_LOCK, tcon, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5308) (void **) &req, &total_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5309) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5310) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5311)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5312) if (smb3_encryption_required(tcon))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5313) flags |= CIFS_TRANSFORM_REQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5314)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5315) req->sync_hdr.ProcessId = cpu_to_le32(pid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5316) req->LockCount = cpu_to_le16(num_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5318) req->PersistentFileId = persist_fid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5319) req->VolatileFileId = volatile_fid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5320)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5321) count = num_lock * sizeof(struct smb2_lock_element);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5322)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5323) iov[0].iov_base = (char *)req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5324) iov[0].iov_len = total_len - sizeof(struct smb2_lock_element);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5325) iov[1].iov_base = (char *)buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5326) iov[1].iov_len = count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5327)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5328) cifs_stats_inc(&tcon->stats.cifs_stats.num_locks);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5329)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5330) memset(&rqst, 0, sizeof(struct smb_rqst));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5331) rqst.rq_iov = iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5332) rqst.rq_nvec = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5333)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5334) rc = cifs_send_recv(xid, tcon->ses, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5335) &rqst, &resp_buf_type, flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5336) &rsp_iov);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5337) cifs_small_buf_release(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5338) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5339) cifs_dbg(FYI, "Send error in smb2_lockv = %d\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5340) cifs_stats_fail_inc(tcon, SMB2_LOCK_HE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5341) trace_smb3_lock_err(xid, persist_fid, tcon->tid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5342) tcon->ses->Suid, rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5343) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5344)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5345) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5346) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5347)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5348) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5349) SMB2_lock(const unsigned int xid, struct cifs_tcon *tcon,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5350) const __u64 persist_fid, const __u64 volatile_fid, const __u32 pid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5351) const __u64 length, const __u64 offset, const __u32 lock_flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5352) const bool wait)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5353) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5354) struct smb2_lock_element lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5355)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5356) lock.Offset = cpu_to_le64(offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5357) lock.Length = cpu_to_le64(length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5358) lock.Flags = cpu_to_le32(lock_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5359) if (!wait && lock_flags != SMB2_LOCKFLAG_UNLOCK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5360) lock.Flags |= cpu_to_le32(SMB2_LOCKFLAG_FAIL_IMMEDIATELY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5361)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5362) return smb2_lockv(xid, tcon, persist_fid, volatile_fid, pid, 1, &lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5363) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5364)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5365) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5366) SMB2_lease_break(const unsigned int xid, struct cifs_tcon *tcon,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5367) __u8 *lease_key, const __le32 lease_state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5368) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5369) struct smb_rqst rqst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5370) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5371) struct smb2_lease_ack *req = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5372) struct cifs_ses *ses = tcon->ses;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5373) int flags = CIFS_OBREAK_OP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5374) unsigned int total_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5375) struct kvec iov[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5376) struct kvec rsp_iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5377) int resp_buf_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5378) __u64 *please_key_high;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5379) __u64 *please_key_low;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5380) struct TCP_Server_Info *server = cifs_pick_channel(tcon->ses);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5381)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5382) cifs_dbg(FYI, "SMB2_lease_break\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5383) rc = smb2_plain_req_init(SMB2_OPLOCK_BREAK, tcon, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5384) (void **) &req, &total_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5385) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5386) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5387)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5388) if (smb3_encryption_required(tcon))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5389) flags |= CIFS_TRANSFORM_REQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5390)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5391) req->sync_hdr.CreditRequest = cpu_to_le16(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5392) req->StructureSize = cpu_to_le16(36);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5393) total_len += 12;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5394)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5395) memcpy(req->LeaseKey, lease_key, 16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5396) req->LeaseState = lease_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5397)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5398) flags |= CIFS_NO_RSP_BUF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5399)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5400) iov[0].iov_base = (char *)req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5401) iov[0].iov_len = total_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5402)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5403) memset(&rqst, 0, sizeof(struct smb_rqst));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5404) rqst.rq_iov = iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5405) rqst.rq_nvec = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5406)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5407) rc = cifs_send_recv(xid, ses, server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5408) &rqst, &resp_buf_type, flags, &rsp_iov);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5409) cifs_small_buf_release(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5410)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5411) please_key_low = (__u64 *)lease_key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5412) please_key_high = (__u64 *)(lease_key+8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5413) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5414) cifs_stats_fail_inc(tcon, SMB2_OPLOCK_BREAK_HE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5415) trace_smb3_lease_err(le32_to_cpu(lease_state), tcon->tid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5416) ses->Suid, *please_key_low, *please_key_high, rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5417) cifs_dbg(FYI, "Send error in Lease Break = %d\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5418) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5419) trace_smb3_lease_done(le32_to_cpu(lease_state), tcon->tid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5420) ses->Suid, *please_key_low, *please_key_high);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5421)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5422) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5423) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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