^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * fs/cifs/cifsfs.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., 2002,2008
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Author(s): Steve French (sfrench@us.ibm.com)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Common Internet FileSystem (CIFS) client
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * This library is free software; you can redistribute it and/or modify
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * it under the terms of the GNU Lesser General Public License as published
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * by the Free Software Foundation; either version 2.1 of the License, or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * (at your option) any later version.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * This library is distributed in the hope that it will be useful,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * but WITHOUT ANY WARRANTY; without even the implied warranty of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * the GNU Lesser General Public License for more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * You should have received a copy of the GNU Lesser General Public License
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * along with this library; if not, write to the Free Software
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) /* Note that BB means BUGBUG (ie something to fix eventually) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <linux/mount.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include <linux/list.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include <linux/seq_file.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/mempool.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #include <linux/kthread.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #include <linux/freezer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #include <linux/namei.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #include <linux/random.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #include <linux/uuid.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #include <linux/xattr.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #include <net/ipv6.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #include "cifsfs.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #include "cifspdu.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #define DECLARE_GLOBALS_HERE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #include "cifsglob.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #include "cifsproto.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) #include "cifs_debug.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #include "cifs_fs_sb.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #include <linux/mm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #include <linux/key-type.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #include "cifs_spnego.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #include "fscache.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #include "smb2pdu.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) #ifdef CONFIG_CIFS_DFS_UPCALL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #include "dfs_cache.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) * DOS dates from 1980/1/1 through 2107/12/31
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) * Protocol specifications indicate the range should be to 119, which
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) * limits maximum year to 2099. But this range has not been checked.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) #define SMB_DATE_MAX (127<<9 | 12<<5 | 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) #define SMB_DATE_MIN (0<<9 | 1<<5 | 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) #define SMB_TIME_MAX (23<<11 | 59<<5 | 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) int cifsFYI = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) bool traceSMB;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) bool enable_oplocks = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) bool linuxExtEnabled = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) bool lookupCacheEnabled = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) bool disable_legacy_dialects; /* false by default */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) bool enable_gcm_256; /* false by default, change when more servers support it */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) bool require_gcm_256; /* false by default */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) unsigned int global_secflags = CIFSSEC_DEF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) /* unsigned int ntlmv2_support = 0; */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) unsigned int sign_CIFS_PDUs = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) static const struct super_operations cifs_super_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) unsigned int CIFSMaxBufSize = CIFS_MAX_MSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) module_param(CIFSMaxBufSize, uint, 0444);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) MODULE_PARM_DESC(CIFSMaxBufSize, "Network buffer size (not including header) "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) "for CIFS requests. "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) "Default: 16384 Range: 8192 to 130048");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) unsigned int cifs_min_rcv = CIFS_MIN_RCV_POOL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) module_param(cifs_min_rcv, uint, 0444);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) MODULE_PARM_DESC(cifs_min_rcv, "Network buffers in pool. Default: 4 Range: "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) "1 to 64");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) unsigned int cifs_min_small = 30;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) module_param(cifs_min_small, uint, 0444);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) MODULE_PARM_DESC(cifs_min_small, "Small network buffers in pool. Default: 30 "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) "Range: 2 to 256");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) unsigned int cifs_max_pending = CIFS_MAX_REQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) module_param(cifs_max_pending, uint, 0444);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) MODULE_PARM_DESC(cifs_max_pending, "Simultaneous requests to server for "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) "CIFS/SMB1 dialect (N/A for SMB3) "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) "Default: 32767 Range: 2 to 32767.");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) #ifdef CONFIG_CIFS_STATS2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) unsigned int slow_rsp_threshold = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) module_param(slow_rsp_threshold, uint, 0644);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) MODULE_PARM_DESC(slow_rsp_threshold, "Amount of time (in seconds) to wait "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) "before logging that a response is delayed. "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) "Default: 1 (if set to 0 disables msg).");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) #endif /* STATS2 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) module_param(enable_oplocks, bool, 0644);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) MODULE_PARM_DESC(enable_oplocks, "Enable or disable oplocks. Default: y/Y/1");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) module_param(enable_gcm_256, bool, 0644);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) MODULE_PARM_DESC(enable_gcm_256, "Enable requesting strongest (256 bit) GCM encryption. Default: n/N/0");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) module_param(require_gcm_256, bool, 0644);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) MODULE_PARM_DESC(require_gcm_256, "Require strongest (256 bit) GCM encryption. Default: n/N/0");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) module_param(disable_legacy_dialects, bool, 0644);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) MODULE_PARM_DESC(disable_legacy_dialects, "To improve security it may be "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) "helpful to restrict the ability to "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) "override the default dialects (SMB2.1, "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) "SMB3 and SMB3.02) on mount with old "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) "dialects (CIFS/SMB1 and SMB2) since "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) "vers=1.0 (CIFS/SMB1) and vers=2.0 are weaker"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) " and less secure. Default: n/N/0");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) extern mempool_t *cifs_sm_req_poolp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) extern mempool_t *cifs_req_poolp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) extern mempool_t *cifs_mid_poolp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) struct workqueue_struct *cifsiod_wq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) struct workqueue_struct *decrypt_wq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) struct workqueue_struct *fileinfo_put_wq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) struct workqueue_struct *cifsoplockd_wq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) __u32 cifs_lock_secret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) * Bumps refcount for cifs super block.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) * Note that it should be only called if a referece to VFS super block is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) * already held, e.g. in open-type syscalls context. Otherwise it can race with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) * atomic_dec_and_test in deactivate_locked_super.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) cifs_sb_active(struct super_block *sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) struct cifs_sb_info *server = CIFS_SB(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) if (atomic_inc_return(&server->active) == 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) atomic_inc(&sb->s_active);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) cifs_sb_deactive(struct super_block *sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) struct cifs_sb_info *server = CIFS_SB(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) if (atomic_dec_and_test(&server->active))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) deactivate_super(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) cifs_read_super(struct super_block *sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) struct inode *inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) struct cifs_sb_info *cifs_sb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) struct cifs_tcon *tcon;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) struct timespec64 ts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) cifs_sb = CIFS_SB(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) tcon = cifs_sb_master_tcon(cifs_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIXACL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) sb->s_flags |= SB_POSIXACL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) if (tcon->snapshot_time)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) sb->s_flags |= SB_RDONLY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) if (tcon->ses->capabilities & tcon->ses->server->vals->cap_large_files)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) sb->s_maxbytes = MAX_LFS_FILESIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) sb->s_maxbytes = MAX_NON_LFS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) * Some very old servers like DOS and OS/2 used 2 second granularity
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) * (while all current servers use 100ns granularity - see MS-DTYP)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) * but 1 second is the maximum allowed granularity for the VFS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) * so for old servers set time granularity to 1 second while for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) * everything else (current servers) set it to 100ns.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) if ((tcon->ses->server->vals->protocol_id == SMB10_PROT_ID) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) ((tcon->ses->capabilities &
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) tcon->ses->server->vals->cap_nt_find) == 0) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) !tcon->unix_ext) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) sb->s_time_gran = 1000000000; /* 1 second is max allowed gran */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) ts = cnvrtDosUnixTm(cpu_to_le16(SMB_DATE_MIN), 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) sb->s_time_min = ts.tv_sec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) ts = cnvrtDosUnixTm(cpu_to_le16(SMB_DATE_MAX),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) cpu_to_le16(SMB_TIME_MAX), 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) sb->s_time_max = ts.tv_sec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) * Almost every server, including all SMB2+, uses DCE TIME
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) * ie 100 nanosecond units, since 1601. See MS-DTYP and MS-FSCC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) sb->s_time_gran = 100;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) ts = cifs_NTtimeToUnix(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) sb->s_time_min = ts.tv_sec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) ts = cifs_NTtimeToUnix(cpu_to_le64(S64_MAX));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) sb->s_time_max = ts.tv_sec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) sb->s_magic = CIFS_MAGIC_NUMBER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) sb->s_op = &cifs_super_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) sb->s_xattr = cifs_xattr_handlers;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) rc = super_setup_bdi(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) goto out_no_root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) /* tune readahead according to rsize */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) sb->s_bdi->ra_pages = cifs_sb->rsize / PAGE_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) sb->s_blocksize = CIFS_MAX_MSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) sb->s_blocksize_bits = 14; /* default 2**14 = CIFS_MAX_MSGSIZE */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) inode = cifs_root_iget(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) if (IS_ERR(inode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) rc = PTR_ERR(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) goto out_no_root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) if (tcon->nocase)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) sb->s_d_op = &cifs_ci_dentry_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) sb->s_d_op = &cifs_dentry_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) sb->s_root = d_make_root(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) if (!sb->s_root) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) rc = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) goto out_no_root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) #ifdef CONFIG_CIFS_NFSD_EXPORT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) cifs_dbg(FYI, "export ops supported\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) sb->s_export_op = &cifs_export_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) #endif /* CONFIG_CIFS_NFSD_EXPORT */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245)
^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) out_no_root:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) cifs_dbg(VFS, "%s: get root inode failed\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) static void cifs_kill_sb(struct super_block *sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) kill_anon_super(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) cifs_umount(cifs_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) cifs_statfs(struct dentry *dentry, struct kstatfs *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) struct super_block *sb = dentry->d_sb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) struct TCP_Server_Info *server = tcon->ses->server;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) unsigned int xid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) xid = get_xid();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) if (le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength) > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) buf->f_namelen =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) buf->f_namelen = PATH_MAX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) buf->f_fsid.val[0] = tcon->vol_serial_number;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) /* are using part of create time for more randomness, see man statfs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) buf->f_fsid.val[1] = (int)le64_to_cpu(tcon->vol_create_time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) buf->f_files = 0; /* undefined */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) buf->f_ffree = 0; /* unlimited */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) if (server->ops->queryfs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) rc = server->ops->queryfs(xid, tcon, cifs_sb, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) free_xid(xid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) static long cifs_fallocate(struct file *file, int mode, loff_t off, loff_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) struct cifs_sb_info *cifs_sb = CIFS_FILE_SB(file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) struct TCP_Server_Info *server = tcon->ses->server;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) if (server->ops->fallocate)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) return server->ops->fallocate(file, tcon, mode, off, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) static int cifs_permission(struct inode *inode, int mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) struct cifs_sb_info *cifs_sb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) cifs_sb = CIFS_SB(inode->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) if ((mask & MAY_EXEC) && !execute_ok(inode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) return -EACCES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) } else /* file mode might have been restricted at mount time
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) on the client (above and beyond ACL on servers) for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) servers which do not support setting and viewing mode bits,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) so allowing client to check permissions is useful */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) return generic_permission(inode, mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) static struct kmem_cache *cifs_inode_cachep;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) static struct kmem_cache *cifs_req_cachep;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) static struct kmem_cache *cifs_mid_cachep;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) static struct kmem_cache *cifs_sm_req_cachep;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) mempool_t *cifs_sm_req_poolp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) mempool_t *cifs_req_poolp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) mempool_t *cifs_mid_poolp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) static struct inode *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) cifs_alloc_inode(struct super_block *sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) struct cifsInodeInfo *cifs_inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) cifs_inode = kmem_cache_alloc(cifs_inode_cachep, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) if (!cifs_inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) cifs_inode->cifsAttrs = 0x20; /* default */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) cifs_inode->time = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) * Until the file is open and we have gotten oplock info back from the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) * server, can not assume caching of file data or metadata.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) cifs_set_oplock_level(cifs_inode, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) cifs_inode->flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) spin_lock_init(&cifs_inode->writers_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) cifs_inode->writers = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) cifs_inode->vfs_inode.i_blkbits = 14; /* 2**14 = CIFS_MAX_MSGSIZE */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) cifs_inode->server_eof = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) cifs_inode->uniqueid = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) cifs_inode->createtime = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) cifs_inode->epoch = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) spin_lock_init(&cifs_inode->open_file_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) generate_random_uuid(cifs_inode->lease_key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) * Can not set i_flags here - they get immediately overwritten to zero
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) * by the VFS.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) /* cifs_inode->vfs_inode.i_flags = S_NOATIME | S_NOCMTIME; */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) INIT_LIST_HEAD(&cifs_inode->openFileList);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) INIT_LIST_HEAD(&cifs_inode->llist);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) return &cifs_inode->vfs_inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) cifs_free_inode(struct inode *inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) kmem_cache_free(cifs_inode_cachep, CIFS_I(inode));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) cifs_evict_inode(struct inode *inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) truncate_inode_pages_final(&inode->i_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) clear_inode(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) cifs_fscache_release_inode_cookie(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) cifs_show_address(struct seq_file *s, struct TCP_Server_Info *server)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) struct sockaddr_in *sa = (struct sockaddr_in *) &server->dstaddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *) &server->dstaddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) seq_puts(s, ",addr=");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) switch (server->dstaddr.ss_family) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) case AF_INET:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) seq_printf(s, "%pI4", &sa->sin_addr.s_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) case AF_INET6:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) seq_printf(s, "%pI6", &sa6->sin6_addr.s6_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) if (sa6->sin6_scope_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) seq_printf(s, "%%%u", sa6->sin6_scope_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) seq_puts(s, "(unknown)");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) if (server->rdma)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) seq_puts(s, ",rdma");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) cifs_show_security(struct seq_file *s, struct cifs_ses *ses)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) if (ses->sectype == Unspecified) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) if (ses->user_name == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) seq_puts(s, ",sec=none");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) seq_puts(s, ",sec=");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) switch (ses->sectype) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) case LANMAN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) seq_puts(s, "lanman");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) case NTLMv2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) seq_puts(s, "ntlmv2");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) case NTLM:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) seq_puts(s, "ntlm");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) case Kerberos:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) seq_puts(s, "krb5");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) case RawNTLMSSP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) seq_puts(s, "ntlmssp");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) /* shouldn't ever happen */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) seq_puts(s, "unknown");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) if (ses->sign)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) seq_puts(s, "i");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) if (ses->sectype == Kerberos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) seq_printf(s, ",cruid=%u",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) from_kuid_munged(&init_user_ns, ses->cred_uid));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) cifs_show_cache_flavor(struct seq_file *s, struct cifs_sb_info *cifs_sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) seq_puts(s, ",cache=");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_STRICT_IO)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) seq_puts(s, "strict");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) seq_puts(s, "none");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_RW_CACHE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) seq_puts(s, "singleclient"); /* assume only one client access */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_RO_CACHE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) seq_puts(s, "ro"); /* read only caching assumed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) seq_puts(s, "loose");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) cifs_show_nls(struct seq_file *s, struct nls_table *cur)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) struct nls_table *def;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) /* Display iocharset= option if it's not default charset */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) def = load_nls_default();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) if (def != cur)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) seq_printf(s, ",iocharset=%s", cur->charset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) unload_nls(def);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) * cifs_show_options() is for displaying mount options in /proc/mounts.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) * Not all settable options are displayed but most of the important
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) * ones are.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) cifs_show_options(struct seq_file *s, struct dentry *root)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) struct cifs_sb_info *cifs_sb = CIFS_SB(root->d_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) struct sockaddr *srcaddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) srcaddr = (struct sockaddr *)&tcon->ses->server->srcaddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) seq_show_option(s, "vers", tcon->ses->server->vals->version_string);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) cifs_show_security(s, tcon->ses);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) cifs_show_cache_flavor(s, cifs_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) if (tcon->no_lease)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) seq_puts(s, ",nolease");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MULTIUSER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) seq_puts(s, ",multiuser");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) else if (tcon->ses->user_name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) seq_show_option(s, "username", tcon->ses->user_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) if (tcon->ses->domainName && tcon->ses->domainName[0] != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) seq_show_option(s, "domain", tcon->ses->domainName);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) if (srcaddr->sa_family != AF_UNSPEC) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) struct sockaddr_in *saddr4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) struct sockaddr_in6 *saddr6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) saddr4 = (struct sockaddr_in *)srcaddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) saddr6 = (struct sockaddr_in6 *)srcaddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) if (srcaddr->sa_family == AF_INET6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) seq_printf(s, ",srcaddr=%pI6c",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) &saddr6->sin6_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) else if (srcaddr->sa_family == AF_INET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) seq_printf(s, ",srcaddr=%pI4",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) &saddr4->sin_addr.s_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) seq_printf(s, ",srcaddr=BAD-AF:%i",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) (int)(srcaddr->sa_family));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) seq_printf(s, ",uid=%u",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) from_kuid_munged(&init_user_ns, cifs_sb->mnt_uid));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) seq_puts(s, ",forceuid");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) seq_puts(s, ",noforceuid");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) seq_printf(s, ",gid=%u",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) from_kgid_munged(&init_user_ns, cifs_sb->mnt_gid));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) seq_puts(s, ",forcegid");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) seq_puts(s, ",noforcegid");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) cifs_show_address(s, tcon->ses->server);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) if (!tcon->unix_ext)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) seq_printf(s, ",file_mode=0%ho,dir_mode=0%ho",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) cifs_sb->mnt_file_mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) cifs_sb->mnt_dir_mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) cifs_show_nls(s, cifs_sb->local_nls);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) if (tcon->seal)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) seq_puts(s, ",seal");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) else if (tcon->ses->server->ignore_signature)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) seq_puts(s, ",signloosely");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) if (tcon->nocase)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) seq_puts(s, ",nocase");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) if (tcon->nodelete)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) seq_puts(s, ",nodelete");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) if (tcon->local_lease)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) seq_puts(s, ",locallease");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) if (tcon->retry)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) seq_puts(s, ",hard");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) seq_puts(s, ",soft");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) if (tcon->use_persistent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) seq_puts(s, ",persistenthandles");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) else if (tcon->use_resilient)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) seq_puts(s, ",resilienthandles");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) if (tcon->posix_extensions)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) seq_puts(s, ",posix");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) else if (tcon->unix_ext)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) seq_puts(s, ",unix");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) seq_puts(s, ",nounix");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_DFS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) seq_puts(s, ",nodfs");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) seq_puts(s, ",posixpaths");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) seq_puts(s, ",setuids");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UID_FROM_ACL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) seq_puts(s, ",idsfromsid");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) seq_puts(s, ",serverino");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_RWPIDFORWARD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) seq_puts(s, ",rwpidforward");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOPOSIXBRL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) seq_puts(s, ",forcemand");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) seq_puts(s, ",nouser_xattr");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) seq_puts(s, ",mapchars");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SFM_CHR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) seq_puts(s, ",mapposix");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) seq_puts(s, ",sfu");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) seq_puts(s, ",nobrl");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_HANDLE_CACHE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) seq_puts(s, ",nohandlecache");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MODE_FROM_SID)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) seq_puts(s, ",modefromsid");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) seq_puts(s, ",cifsacl");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) seq_puts(s, ",dynperm");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) if (root->d_sb->s_flags & SB_POSIXACL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) seq_puts(s, ",acl");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) seq_puts(s, ",mfsymlinks");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_FSCACHE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) seq_puts(s, ",fsc");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOSSYNC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) seq_puts(s, ",nostrictsync");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) seq_puts(s, ",noperm");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_BACKUPUID)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) seq_printf(s, ",backupuid=%u",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) from_kuid_munged(&init_user_ns,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) cifs_sb->mnt_backupuid));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_BACKUPGID)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) seq_printf(s, ",backupgid=%u",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) from_kgid_munged(&init_user_ns,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) cifs_sb->mnt_backupgid));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) seq_printf(s, ",rsize=%u", cifs_sb->rsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) seq_printf(s, ",wsize=%u", cifs_sb->wsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) seq_printf(s, ",bsize=%u", cifs_sb->bsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) if (tcon->ses->server->min_offload)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) seq_printf(s, ",esize=%u", tcon->ses->server->min_offload);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) seq_printf(s, ",echo_interval=%lu",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) tcon->ses->server->echo_interval / HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) /* Only display max_credits if it was overridden on mount */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) if (tcon->ses->server->max_credits != SMB2_MAX_CREDITS_AVAILABLE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) seq_printf(s, ",max_credits=%u", tcon->ses->server->max_credits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) if (tcon->snapshot_time)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) seq_printf(s, ",snapshot=%llu", tcon->snapshot_time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) if (tcon->handle_timeout)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) seq_printf(s, ",handletimeout=%u", tcon->handle_timeout);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) /* convert actimeo and display it in seconds */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) seq_printf(s, ",actimeo=%lu", cifs_sb->actimeo / HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) if (tcon->ses->chan_max > 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) seq_printf(s, ",multichannel,max_channels=%zu",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) tcon->ses->chan_max);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) static void cifs_umount_begin(struct super_block *sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) struct cifs_tcon *tcon;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) if (cifs_sb == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) tcon = cifs_sb_master_tcon(cifs_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) spin_lock(&cifs_tcp_ses_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) if ((tcon->tc_count > 1) || (tcon->tidStatus == CifsExiting)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) /* we have other mounts to same share or we have
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) already tried to force umount this and woken up
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) all waiting network requests, nothing to do */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) spin_unlock(&cifs_tcp_ses_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) } else if (tcon->tc_count == 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) tcon->tidStatus = CifsExiting;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) spin_unlock(&cifs_tcp_ses_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) /* cancel_brl_requests(tcon); */ /* BB mark all brl mids as exiting */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) /* cancel_notify_requests(tcon); */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) if (tcon->ses && tcon->ses->server) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) cifs_dbg(FYI, "wake up tasks now - umount begin not complete\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) wake_up_all(&tcon->ses->server->request_q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) wake_up_all(&tcon->ses->server->response_q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) msleep(1); /* yield */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) /* we have to kick the requests once more */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) wake_up_all(&tcon->ses->server->response_q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) msleep(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) #ifdef CONFIG_CIFS_STATS2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) static int cifs_show_stats(struct seq_file *s, struct dentry *root)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) /* BB FIXME */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) static int cifs_remount(struct super_block *sb, int *flags, char *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) sync_filesystem(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) *flags |= SB_NODIRATIME;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) static int cifs_drop_inode(struct inode *inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) /* no serverino => unconditional eviction */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) return !(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) generic_drop_inode(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) static const struct super_operations cifs_super_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) .statfs = cifs_statfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) .alloc_inode = cifs_alloc_inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) .free_inode = cifs_free_inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) .drop_inode = cifs_drop_inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) .evict_inode = cifs_evict_inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) /* .delete_inode = cifs_delete_inode, */ /* Do not need above
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) function unless later we add lazy close of inodes or unless the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) kernel forgets to call us with the same number of releases (closes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) as opens */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) .show_options = cifs_show_options,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) .umount_begin = cifs_umount_begin,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) .remount_fs = cifs_remount,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) #ifdef CONFIG_CIFS_STATS2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) .show_stats = cifs_show_stats,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) * Get root dentry from superblock according to prefix path mount option.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) * Return dentry with refcount + 1 on success and NULL otherwise.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) static struct dentry *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) cifs_get_root(struct smb_vol *vol, struct super_block *sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) struct dentry *dentry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) char *full_path = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) char *s, *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) char sep;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_USE_PREFIX_PATH)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) return dget(sb->s_root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) full_path = cifs_build_path_to_root(vol, cifs_sb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) cifs_sb_master_tcon(cifs_sb), 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) if (full_path == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) return ERR_PTR(-ENOMEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) cifs_dbg(FYI, "Get root dentry for %s\n", full_path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) sep = CIFS_DIR_SEP(cifs_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) dentry = dget(sb->s_root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) p = s = full_path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) struct inode *dir = d_inode(dentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) struct dentry *child;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) if (!S_ISDIR(dir->i_mode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) dput(dentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) dentry = ERR_PTR(-ENOTDIR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) /* skip separators */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) while (*s == sep)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) s++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) if (!*s)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) p = s++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) /* next separator */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) while (*s && *s != sep)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) s++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) child = lookup_positive_unlocked(p, dentry, s - p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) dput(dentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) dentry = child;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) } while (!IS_ERR(dentry));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) kfree(full_path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) return dentry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) static int cifs_set_super(struct super_block *sb, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) struct cifs_mnt_data *mnt_data = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) sb->s_fs_info = mnt_data->cifs_sb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) return set_anon_super(sb, NULL);
^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) static struct dentry *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) cifs_smb3_do_mount(struct file_system_type *fs_type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) int flags, const char *dev_name, void *data, bool is_smb3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) struct super_block *sb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) struct cifs_sb_info *cifs_sb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) struct smb_vol *volume_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) struct cifs_mnt_data mnt_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) struct dentry *root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) * Prints in Kernel / CIFS log the attempted mount operation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) * If CIFS_DEBUG && cifs_FYI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) if (cifsFYI)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) cifs_dbg(FYI, "Devname: %s flags: %d\n", dev_name, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) cifs_info("Attempting to mount %s\n", dev_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) volume_info = cifs_get_volume_info((char *)data, dev_name, is_smb3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) if (IS_ERR(volume_info))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) return ERR_CAST(volume_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) cifs_sb = kzalloc(sizeof(struct cifs_sb_info), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) if (cifs_sb == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) root = ERR_PTR(-ENOMEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) goto out_nls;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) cifs_sb->mountdata = kstrndup(data, PAGE_SIZE, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) if (cifs_sb->mountdata == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) root = ERR_PTR(-ENOMEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) goto out_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) rc = cifs_setup_cifs_sb(volume_info, cifs_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) root = ERR_PTR(rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) goto out_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) rc = cifs_mount(cifs_sb, volume_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) if (!(flags & SB_SILENT))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) cifs_dbg(VFS, "cifs_mount failed w/return code = %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) root = ERR_PTR(rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) goto out_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) mnt_data.vol = volume_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) mnt_data.cifs_sb = cifs_sb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) mnt_data.flags = flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) /* BB should we make this contingent on mount parm? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) flags |= SB_NODIRATIME | SB_NOATIME;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) sb = sget(fs_type, cifs_match_super, cifs_set_super, flags, &mnt_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) if (IS_ERR(sb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) root = ERR_CAST(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) cifs_umount(cifs_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) if (sb->s_root) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) cifs_dbg(FYI, "Use existing superblock\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) cifs_umount(cifs_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) rc = cifs_read_super(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) root = ERR_PTR(rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) goto out_super;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) sb->s_flags |= SB_ACTIVE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) root = cifs_get_root(volume_info, sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) if (IS_ERR(root))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) goto out_super;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) cifs_dbg(FYI, "dentry root is: %p\n", root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) out_super:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) deactivate_locked_super(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) return root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) cifs_cleanup_volume_info(volume_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) return root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) out_free:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) kfree(cifs_sb->prepath);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) kfree(cifs_sb->mountdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) kfree(cifs_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) out_nls:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) unload_nls(volume_info->local_nls);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) static struct dentry *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) smb3_do_mount(struct file_system_type *fs_type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) int flags, const char *dev_name, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) return cifs_smb3_do_mount(fs_type, flags, dev_name, data, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) static struct dentry *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) cifs_do_mount(struct file_system_type *fs_type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) int flags, const char *dev_name, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) return cifs_smb3_do_mount(fs_type, flags, dev_name, data, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) static ssize_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) cifs_loose_read_iter(struct kiocb *iocb, struct iov_iter *iter)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) ssize_t rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) struct inode *inode = file_inode(iocb->ki_filp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) if (iocb->ki_filp->f_flags & O_DIRECT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) return cifs_user_readv(iocb, iter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) rc = cifs_revalidate_mapping(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) return generic_file_read_iter(iocb, iter);
^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) static ssize_t cifs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) struct inode *inode = file_inode(iocb->ki_filp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) struct cifsInodeInfo *cinode = CIFS_I(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) ssize_t written;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) if (iocb->ki_filp->f_flags & O_DIRECT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) written = cifs_user_writev(iocb, from);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) if (written > 0 && CIFS_CACHE_READ(cinode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) cifs_zap_mapping(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) cifs_dbg(FYI,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) "Set no oplock for inode=%p after a write operation\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) cinode->oplock = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) return written;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) written = cifs_get_writer(cinode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) if (written)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) return written;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) written = generic_file_write_iter(iocb, from);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) if (CIFS_CACHE_WRITE(CIFS_I(inode)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) rc = filemap_fdatawrite(inode->i_mapping);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) cifs_dbg(FYI, "cifs_file_write_iter: %d rc on %p inode\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) rc, inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) cifs_put_writer(cinode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) return written;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) static loff_t cifs_llseek(struct file *file, loff_t offset, int whence)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) struct cifsFileInfo *cfile = file->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) struct cifs_tcon *tcon;
^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) * whence == SEEK_END || SEEK_DATA || SEEK_HOLE => we must revalidate
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) * the cached file length
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) if (whence != SEEK_SET && whence != SEEK_CUR) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) struct inode *inode = file_inode(file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) * We need to be sure that all dirty pages are written and the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) * server has the newest file length.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) if (!CIFS_CACHE_READ(CIFS_I(inode)) && inode->i_mapping &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967) inode->i_mapping->nrpages != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) rc = filemap_fdatawait(inode->i_mapping);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) mapping_set_error(inode->i_mapping, rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) }
^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) * Some applications poll for the file length in this strange
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) * way so we must seek to end on non-oplocked files by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) * setting the revalidate time to zero.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) CIFS_I(inode)->time = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981) rc = cifs_revalidate_file_attr(file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982) if (rc < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) return (loff_t)rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) if (cfile && cfile->tlink) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) tcon = tlink_tcon(cfile->tlink);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) if (tcon->ses->server->ops->llseek)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) return tcon->ses->server->ops->llseek(file, tcon,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) offset, whence);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) return generic_file_llseek(file, offset, whence);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) cifs_setlease(struct file *file, long arg, struct file_lock **lease, void **priv)
^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) * Note that this is called by vfs setlease with i_lock held to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) * protect *lease from going away.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) struct inode *inode = file_inode(file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) struct cifsFileInfo *cfile = file->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) if (!(S_ISREG(inode->i_mode)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) /* Check if file is oplocked if this is request for new lease */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) if (arg == F_UNLCK ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) ((arg == F_RDLCK) && CIFS_CACHE_READ(CIFS_I(inode))) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) ((arg == F_WRLCK) && CIFS_CACHE_WRITE(CIFS_I(inode))))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) return generic_setlease(file, arg, lease, priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012) else if (tlink_tcon(cfile->tlink)->local_lease &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) !CIFS_CACHE_READ(CIFS_I(inode)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015) * If the server claims to support oplock on this file, then we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016) * still need to check oplock even if the local_lease mount
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017) * option is set, but there are servers which do not support
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) * oplock for which this mount option may be useful if the user
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) * knows that the file won't be changed on the server by anyone
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020) * else.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022) return generic_setlease(file, arg, lease, priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) return -EAGAIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027) struct file_system_type cifs_fs_type = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029) .name = "cifs",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) .mount = cifs_do_mount,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031) .kill_sb = cifs_kill_sb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032) .fs_flags = FS_RENAME_DOES_D_MOVE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) MODULE_ALIAS_FS("cifs");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) static struct file_system_type smb3_fs_type = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) .name = "smb3",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039) .mount = smb3_do_mount,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) .kill_sb = cifs_kill_sb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041) .fs_flags = FS_RENAME_DOES_D_MOVE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043) MODULE_ALIAS_FS("smb3");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044) MODULE_ALIAS("smb3");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046) const struct inode_operations cifs_dir_inode_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047) .create = cifs_create,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048) .atomic_open = cifs_atomic_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) .lookup = cifs_lookup,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) .getattr = cifs_getattr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051) .unlink = cifs_unlink,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052) .link = cifs_hardlink,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) .mkdir = cifs_mkdir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054) .rmdir = cifs_rmdir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055) .rename = cifs_rename2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) .permission = cifs_permission,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) .setattr = cifs_setattr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058) .symlink = cifs_symlink,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059) .mknod = cifs_mknod,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) .listxattr = cifs_listxattr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) const struct inode_operations cifs_file_inode_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) .setattr = cifs_setattr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065) .getattr = cifs_getattr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066) .permission = cifs_permission,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) .listxattr = cifs_listxattr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) .fiemap = cifs_fiemap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) const struct inode_operations cifs_symlink_inode_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072) .get_link = cifs_get_link,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073) .permission = cifs_permission,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074) .listxattr = cifs_listxattr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077) static loff_t cifs_remap_file_range(struct file *src_file, loff_t off,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) struct file *dst_file, loff_t destoff, loff_t len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) unsigned int remap_flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081) struct inode *src_inode = file_inode(src_file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082) struct inode *target_inode = file_inode(dst_file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083) struct cifsFileInfo *smb_file_src = src_file->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084) struct cifsFileInfo *smb_file_target;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085) struct cifs_tcon *target_tcon;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086) unsigned int xid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) if (remap_flags & ~(REMAP_FILE_DEDUP | REMAP_FILE_ADVISORY))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092) cifs_dbg(FYI, "clone range\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094) xid = get_xid();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096) if (!src_file->private_data || !dst_file->private_data) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097) rc = -EBADF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098) cifs_dbg(VFS, "missing cifsFileInfo on copy range src file\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102) smb_file_target = dst_file->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103) target_tcon = tlink_tcon(smb_file_target->tlink);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106) * Note: cifs case is easier than btrfs since server responsible for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107) * checks for proper open modes and file type and if it wants
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108) * server could even support copy of range where source = target
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) lock_two_nondirectories(target_inode, src_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112) if (len == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113) len = src_inode->i_size - off;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115) cifs_dbg(FYI, "about to flush pages\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116) /* should we flush first and last page first */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117) truncate_inode_pages_range(&target_inode->i_data, destoff,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118) PAGE_ALIGN(destoff + len)-1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120) if (target_tcon->ses->server->ops->duplicate_extents)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121) rc = target_tcon->ses->server->ops->duplicate_extents(xid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122) smb_file_src, smb_file_target, off, len, destoff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124) rc = -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126) /* force revalidate of size and timestamps of target file now
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127) that target is updated on the server */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128) CIFS_I(target_inode)->time = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) /* although unlocking in the reverse order from locking is not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130) strictly necessary here it is a little cleaner to be consistent */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131) unlock_two_nondirectories(src_inode, target_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133) free_xid(xid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) return rc < 0 ? rc : len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137) ssize_t cifs_file_copychunk_range(unsigned int xid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138) struct file *src_file, loff_t off,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139) struct file *dst_file, loff_t destoff,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140) size_t len, unsigned int flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142) struct inode *src_inode = file_inode(src_file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143) struct inode *target_inode = file_inode(dst_file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144) struct cifsFileInfo *smb_file_src;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145) struct cifsFileInfo *smb_file_target;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146) struct cifs_tcon *src_tcon;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147) struct cifs_tcon *target_tcon;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148) ssize_t rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150) cifs_dbg(FYI, "copychunk range\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152) if (!src_file->private_data || !dst_file->private_data) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153) rc = -EBADF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154) cifs_dbg(VFS, "missing cifsFileInfo on copy range src file\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155) goto out;
^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) rc = -EXDEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159) smb_file_target = dst_file->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160) smb_file_src = src_file->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161) src_tcon = tlink_tcon(smb_file_src->tlink);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162) target_tcon = tlink_tcon(smb_file_target->tlink);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164) if (src_tcon->ses != target_tcon->ses) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1165) cifs_dbg(VFS, "source and target of copy not on same server\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1166) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1167) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1169) rc = -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1170) if (!target_tcon->ses->server->ops->copychunk_range)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1171) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1173) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1174) * Note: cifs case is easier than btrfs since server responsible for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1175) * checks for proper open modes and file type and if it wants
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1176) * server could even support copy of range where source = target
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1177) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1178) lock_two_nondirectories(target_inode, src_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1180) cifs_dbg(FYI, "about to flush pages\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1181) /* should we flush first and last page first */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1182) truncate_inode_pages(&target_inode->i_data, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1184) rc = file_modified(dst_file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1185) if (!rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1186) rc = target_tcon->ses->server->ops->copychunk_range(xid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1187) smb_file_src, smb_file_target, off, len, destoff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1189) file_accessed(src_file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1191) /* force revalidate of size and timestamps of target file now
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1192) * that target is updated on the server
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1193) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1194) CIFS_I(target_inode)->time = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1195) /* although unlocking in the reverse order from locking is not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1196) * strictly necessary here it is a little cleaner to be consistent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1197) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1198) unlock_two_nondirectories(src_inode, target_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1199)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1200) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1201) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1202) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1204) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1205) * Directory operations under CIFS/SMB2/SMB3 are synchronous, so fsync()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1206) * is a dummy operation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1207) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1208) static int cifs_dir_fsync(struct file *file, loff_t start, loff_t end, int datasync)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1209) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1210) cifs_dbg(FYI, "Sync directory - name: %pD datasync: 0x%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1211) file, datasync);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1213) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1214) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1216) static ssize_t cifs_copy_file_range(struct file *src_file, loff_t off,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1217) struct file *dst_file, loff_t destoff,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1218) size_t len, unsigned int flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1219) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1220) unsigned int xid = get_xid();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1221) ssize_t rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1222) struct cifsFileInfo *cfile = dst_file->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1223)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1224) if (cfile->swapfile)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1225) return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1227) rc = cifs_file_copychunk_range(xid, src_file, off, dst_file, destoff,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1228) len, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1229) free_xid(xid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1230)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1231) if (rc == -EOPNOTSUPP || rc == -EXDEV)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1232) rc = generic_copy_file_range(src_file, off, dst_file,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1233) destoff, len, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1234) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1235) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1236)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1237) const struct file_operations cifs_file_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1238) .read_iter = cifs_loose_read_iter,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1239) .write_iter = cifs_file_write_iter,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1240) .open = cifs_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1241) .release = cifs_close,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1242) .lock = cifs_lock,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1243) .flock = cifs_flock,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1244) .fsync = cifs_fsync,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1245) .flush = cifs_flush,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1246) .mmap = cifs_file_mmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1247) .splice_read = generic_file_splice_read,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1248) .splice_write = iter_file_splice_write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1249) .llseek = cifs_llseek,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1250) .unlocked_ioctl = cifs_ioctl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1251) .copy_file_range = cifs_copy_file_range,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1252) .remap_file_range = cifs_remap_file_range,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1253) .setlease = cifs_setlease,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1254) .fallocate = cifs_fallocate,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1255) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1257) const struct file_operations cifs_file_strict_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1258) .read_iter = cifs_strict_readv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1259) .write_iter = cifs_strict_writev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1260) .open = cifs_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1261) .release = cifs_close,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1262) .lock = cifs_lock,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1263) .flock = cifs_flock,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1264) .fsync = cifs_strict_fsync,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1265) .flush = cifs_flush,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1266) .mmap = cifs_file_strict_mmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1267) .splice_read = generic_file_splice_read,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1268) .splice_write = iter_file_splice_write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1269) .llseek = cifs_llseek,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1270) .unlocked_ioctl = cifs_ioctl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1271) .copy_file_range = cifs_copy_file_range,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1272) .remap_file_range = cifs_remap_file_range,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1273) .setlease = cifs_setlease,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1274) .fallocate = cifs_fallocate,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1275) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1277) const struct file_operations cifs_file_direct_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1278) .read_iter = cifs_direct_readv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1279) .write_iter = cifs_direct_writev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1280) .open = cifs_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1281) .release = cifs_close,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1282) .lock = cifs_lock,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1283) .flock = cifs_flock,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1284) .fsync = cifs_fsync,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1285) .flush = cifs_flush,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1286) .mmap = cifs_file_mmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1287) .splice_read = generic_file_splice_read,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1288) .splice_write = iter_file_splice_write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1289) .unlocked_ioctl = cifs_ioctl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1290) .copy_file_range = cifs_copy_file_range,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1291) .remap_file_range = cifs_remap_file_range,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1292) .llseek = cifs_llseek,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1293) .setlease = cifs_setlease,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1294) .fallocate = cifs_fallocate,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1295) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1296)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1297) const struct file_operations cifs_file_nobrl_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1298) .read_iter = cifs_loose_read_iter,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1299) .write_iter = cifs_file_write_iter,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1300) .open = cifs_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1301) .release = cifs_close,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1302) .fsync = cifs_fsync,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1303) .flush = cifs_flush,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1304) .mmap = cifs_file_mmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1305) .splice_read = generic_file_splice_read,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1306) .splice_write = iter_file_splice_write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1307) .llseek = cifs_llseek,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1308) .unlocked_ioctl = cifs_ioctl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1309) .copy_file_range = cifs_copy_file_range,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1310) .remap_file_range = cifs_remap_file_range,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1311) .setlease = cifs_setlease,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1312) .fallocate = cifs_fallocate,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1313) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1314)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1315) const struct file_operations cifs_file_strict_nobrl_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1316) .read_iter = cifs_strict_readv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1317) .write_iter = cifs_strict_writev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1318) .open = cifs_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1319) .release = cifs_close,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1320) .fsync = cifs_strict_fsync,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1321) .flush = cifs_flush,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1322) .mmap = cifs_file_strict_mmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1323) .splice_read = generic_file_splice_read,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1324) .splice_write = iter_file_splice_write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1325) .llseek = cifs_llseek,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1326) .unlocked_ioctl = cifs_ioctl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1327) .copy_file_range = cifs_copy_file_range,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1328) .remap_file_range = cifs_remap_file_range,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1329) .setlease = cifs_setlease,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1330) .fallocate = cifs_fallocate,
^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) const struct file_operations cifs_file_direct_nobrl_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1334) .read_iter = cifs_direct_readv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1335) .write_iter = cifs_direct_writev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1336) .open = cifs_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1337) .release = cifs_close,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1338) .fsync = cifs_fsync,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1339) .flush = cifs_flush,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1340) .mmap = cifs_file_mmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1341) .splice_read = generic_file_splice_read,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1342) .splice_write = iter_file_splice_write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1343) .unlocked_ioctl = cifs_ioctl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1344) .copy_file_range = cifs_copy_file_range,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1345) .remap_file_range = cifs_remap_file_range,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1346) .llseek = cifs_llseek,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1347) .setlease = cifs_setlease,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1348) .fallocate = cifs_fallocate,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1349) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1350)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1351) const struct file_operations cifs_dir_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1352) .iterate_shared = cifs_readdir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1353) .release = cifs_closedir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1354) .read = generic_read_dir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1355) .unlocked_ioctl = cifs_ioctl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1356) .copy_file_range = cifs_copy_file_range,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1357) .remap_file_range = cifs_remap_file_range,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1358) .llseek = generic_file_llseek,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1359) .fsync = cifs_dir_fsync,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1360) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1361)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1362) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1363) cifs_init_once(void *inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1364) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1365) struct cifsInodeInfo *cifsi = inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1366)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1367) inode_init_once(&cifsi->vfs_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1368) init_rwsem(&cifsi->lock_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1369) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1370)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1371) static int __init
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1372) cifs_init_inodecache(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1373) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1374) cifs_inode_cachep = kmem_cache_create("cifs_inode_cache",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1375) sizeof(struct cifsInodeInfo),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1376) 0, (SLAB_RECLAIM_ACCOUNT|
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1377) SLAB_MEM_SPREAD|SLAB_ACCOUNT),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1378) cifs_init_once);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1379) if (cifs_inode_cachep == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1380) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1381)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1382) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1383) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1384)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1385) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1386) cifs_destroy_inodecache(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1387) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1388) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1389) * Make sure all delayed rcu free inodes are flushed before we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1390) * destroy cache.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1391) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1392) rcu_barrier();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1393) kmem_cache_destroy(cifs_inode_cachep);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1394) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1395)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1396) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1397) cifs_init_request_bufs(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1398) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1399) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1400) * SMB2 maximum header size is bigger than CIFS one - no problems to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1401) * allocate some more bytes for CIFS.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1402) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1403) size_t max_hdr_size = MAX_SMB2_HDR_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1404)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1405) if (CIFSMaxBufSize < 8192) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1406) /* Buffer size can not be smaller than 2 * PATH_MAX since maximum
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1407) Unicode path name has to fit in any SMB/CIFS path based frames */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1408) CIFSMaxBufSize = 8192;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1409) } else if (CIFSMaxBufSize > 1024*127) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1410) CIFSMaxBufSize = 1024 * 127;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1411) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1412) CIFSMaxBufSize &= 0x1FE00; /* Round size to even 512 byte mult*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1413) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1414) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1415) cifs_dbg(VFS, "CIFSMaxBufSize %d 0x%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1416) CIFSMaxBufSize, CIFSMaxBufSize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1417) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1418) cifs_req_cachep = kmem_cache_create_usercopy("cifs_request",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1419) CIFSMaxBufSize + max_hdr_size, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1420) SLAB_HWCACHE_ALIGN, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1421) CIFSMaxBufSize + max_hdr_size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1422) NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1423) if (cifs_req_cachep == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1424) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1425)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1426) if (cifs_min_rcv < 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1427) cifs_min_rcv = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1428) else if (cifs_min_rcv > 64) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1429) cifs_min_rcv = 64;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1430) cifs_dbg(VFS, "cifs_min_rcv set to maximum (64)\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1431) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1432)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1433) cifs_req_poolp = mempool_create_slab_pool(cifs_min_rcv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1434) cifs_req_cachep);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1435)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1436) if (cifs_req_poolp == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1437) kmem_cache_destroy(cifs_req_cachep);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1438) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1439) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1440) /* MAX_CIFS_SMALL_BUFFER_SIZE bytes is enough for most SMB responses and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1441) almost all handle based requests (but not write response, nor is it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1442) sufficient for path based requests). A smaller size would have
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1443) been more efficient (compacting multiple slab items on one 4k page)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1444) for the case in which debug was on, but this larger size allows
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1445) more SMBs to use small buffer alloc and is still much more
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1446) efficient to alloc 1 per page off the slab compared to 17K (5page)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1447) alloc of large cifs buffers even when page debugging is on */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1448) cifs_sm_req_cachep = kmem_cache_create_usercopy("cifs_small_rq",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1449) MAX_CIFS_SMALL_BUFFER_SIZE, 0, SLAB_HWCACHE_ALIGN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1450) 0, MAX_CIFS_SMALL_BUFFER_SIZE, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1451) if (cifs_sm_req_cachep == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1452) mempool_destroy(cifs_req_poolp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1453) kmem_cache_destroy(cifs_req_cachep);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1454) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1455) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1456)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1457) if (cifs_min_small < 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1458) cifs_min_small = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1459) else if (cifs_min_small > 256) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1460) cifs_min_small = 256;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1461) cifs_dbg(FYI, "cifs_min_small set to maximum (256)\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1462) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1463)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1464) cifs_sm_req_poolp = mempool_create_slab_pool(cifs_min_small,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1465) cifs_sm_req_cachep);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1466)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1467) if (cifs_sm_req_poolp == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1468) mempool_destroy(cifs_req_poolp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1469) kmem_cache_destroy(cifs_req_cachep);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1470) kmem_cache_destroy(cifs_sm_req_cachep);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1471) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1472) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1473)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1474) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1475) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1476)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1477) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1478) cifs_destroy_request_bufs(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1479) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1480) mempool_destroy(cifs_req_poolp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1481) kmem_cache_destroy(cifs_req_cachep);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1482) mempool_destroy(cifs_sm_req_poolp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1483) kmem_cache_destroy(cifs_sm_req_cachep);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1484) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1485)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1486) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1487) cifs_init_mids(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1488) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1489) cifs_mid_cachep = kmem_cache_create("cifs_mpx_ids",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1490) sizeof(struct mid_q_entry), 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1491) SLAB_HWCACHE_ALIGN, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1492) if (cifs_mid_cachep == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1493) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1494)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1495) /* 3 is a reasonable minimum number of simultaneous operations */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1496) cifs_mid_poolp = mempool_create_slab_pool(3, cifs_mid_cachep);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1497) if (cifs_mid_poolp == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1498) kmem_cache_destroy(cifs_mid_cachep);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1499) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1500) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1501)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1502) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1503) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1504)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1505) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1506) cifs_destroy_mids(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1507) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1508) mempool_destroy(cifs_mid_poolp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1509) kmem_cache_destroy(cifs_mid_cachep);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1510) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1511)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1512) static int __init
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1513) init_cifs(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1514) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1515) int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1516) cifs_proc_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1517) INIT_LIST_HEAD(&cifs_tcp_ses_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1518) #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1519) INIT_LIST_HEAD(&GlobalDnotifyReqList);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1520) INIT_LIST_HEAD(&GlobalDnotifyRsp_Q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1521) #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1522) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1523) * Initialize Global counters
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1524) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1525) atomic_set(&sesInfoAllocCount, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1526) atomic_set(&tconInfoAllocCount, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1527) atomic_set(&tcpSesAllocCount, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1528) atomic_set(&tcpSesReconnectCount, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1529) atomic_set(&tconInfoReconnectCount, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1530)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1531) atomic_set(&bufAllocCount, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1532) atomic_set(&smBufAllocCount, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1533) #ifdef CONFIG_CIFS_STATS2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1534) atomic_set(&totBufAllocCount, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1535) atomic_set(&totSmBufAllocCount, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1536) if (slow_rsp_threshold < 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1537) cifs_dbg(FYI, "slow_response_threshold msgs disabled\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1538) else if (slow_rsp_threshold > 32767)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1539) cifs_dbg(VFS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1540) "slow response threshold set higher than recommended (0 to 32767)\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1541) #endif /* CONFIG_CIFS_STATS2 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1542)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1543) atomic_set(&midCount, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1544) GlobalCurrentXid = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1545) GlobalTotalActiveXid = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1546) GlobalMaxActiveXid = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1547) spin_lock_init(&cifs_tcp_ses_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1548) spin_lock_init(&GlobalMid_Lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1549)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1550) cifs_lock_secret = get_random_u32();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1551)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1552) if (cifs_max_pending < 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1553) cifs_max_pending = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1554) cifs_dbg(FYI, "cifs_max_pending set to min of 2\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1555) } else if (cifs_max_pending > CIFS_MAX_REQ) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1556) cifs_max_pending = CIFS_MAX_REQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1557) cifs_dbg(FYI, "cifs_max_pending set to max of %u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1558) CIFS_MAX_REQ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1559) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1560)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1561) cifsiod_wq = alloc_workqueue("cifsiod", WQ_FREEZABLE|WQ_MEM_RECLAIM, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1562) if (!cifsiod_wq) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1563) rc = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1564) goto out_clean_proc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1565) }
^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) * Consider in future setting limit!=0 maybe to min(num_of_cores - 1, 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1569) * so that we don't launch too many worker threads but
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1570) * Documentation/core-api/workqueue.rst recommends setting it to 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1571) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1572)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1573) /* WQ_UNBOUND allows decrypt tasks to run on any CPU */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1574) decrypt_wq = alloc_workqueue("smb3decryptd",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1575) WQ_UNBOUND|WQ_FREEZABLE|WQ_MEM_RECLAIM, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1576) if (!decrypt_wq) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1577) rc = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1578) goto out_destroy_cifsiod_wq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1579) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1580)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1581) fileinfo_put_wq = alloc_workqueue("cifsfileinfoput",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1582) WQ_UNBOUND|WQ_FREEZABLE|WQ_MEM_RECLAIM, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1583) if (!fileinfo_put_wq) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1584) rc = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1585) goto out_destroy_decrypt_wq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1586) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1587)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1588) cifsoplockd_wq = alloc_workqueue("cifsoplockd",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1589) WQ_FREEZABLE|WQ_MEM_RECLAIM, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1590) if (!cifsoplockd_wq) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1591) rc = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1592) goto out_destroy_fileinfo_put_wq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1593) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1594)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1595) rc = cifs_fscache_register();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1596) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1597) goto out_destroy_cifsoplockd_wq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1598)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1599) rc = cifs_init_inodecache();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1600) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1601) goto out_unreg_fscache;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1602)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1603) rc = cifs_init_mids();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1604) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1605) goto out_destroy_inodecache;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1606)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1607) rc = cifs_init_request_bufs();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1608) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1609) goto out_destroy_mids;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1610)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1611) #ifdef CONFIG_CIFS_DFS_UPCALL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1612) rc = dfs_cache_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1613) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1614) goto out_destroy_request_bufs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1615) #endif /* CONFIG_CIFS_DFS_UPCALL */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1616) #ifdef CONFIG_CIFS_UPCALL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1617) rc = init_cifs_spnego();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1618) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1619) goto out_destroy_dfs_cache;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1620) #endif /* CONFIG_CIFS_UPCALL */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1621)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1622) rc = init_cifs_idmap();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1623) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1624) goto out_register_key_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1625)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1626) rc = register_filesystem(&cifs_fs_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1627) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1628) goto out_init_cifs_idmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1629)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1630) rc = register_filesystem(&smb3_fs_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1631) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1632) unregister_filesystem(&cifs_fs_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1633) goto out_init_cifs_idmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1634) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1635)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1636) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1637)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1638) out_init_cifs_idmap:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1639) exit_cifs_idmap();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1640) out_register_key_type:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1641) #ifdef CONFIG_CIFS_UPCALL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1642) exit_cifs_spnego();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1643) out_destroy_dfs_cache:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1644) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1645) #ifdef CONFIG_CIFS_DFS_UPCALL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1646) dfs_cache_destroy();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1647) out_destroy_request_bufs:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1648) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1649) cifs_destroy_request_bufs();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1650) out_destroy_mids:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1651) cifs_destroy_mids();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1652) out_destroy_inodecache:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1653) cifs_destroy_inodecache();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1654) out_unreg_fscache:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1655) cifs_fscache_unregister();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1656) out_destroy_cifsoplockd_wq:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1657) destroy_workqueue(cifsoplockd_wq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1658) out_destroy_fileinfo_put_wq:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1659) destroy_workqueue(fileinfo_put_wq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1660) out_destroy_decrypt_wq:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1661) destroy_workqueue(decrypt_wq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1662) out_destroy_cifsiod_wq:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1663) destroy_workqueue(cifsiod_wq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1664) out_clean_proc:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1665) cifs_proc_clean();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1666) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1667) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1668)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1669) static void __exit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1670) exit_cifs(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1671) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1672) cifs_dbg(NOISY, "exit_smb3\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1673) unregister_filesystem(&cifs_fs_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1674) unregister_filesystem(&smb3_fs_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1675) cifs_dfs_release_automount_timer();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1676) exit_cifs_idmap();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1677) #ifdef CONFIG_CIFS_UPCALL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1678) exit_cifs_spnego();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1679) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1680) #ifdef CONFIG_CIFS_DFS_UPCALL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1681) dfs_cache_destroy();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1682) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1683) cifs_destroy_request_bufs();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1684) cifs_destroy_mids();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1685) cifs_destroy_inodecache();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1686) cifs_fscache_unregister();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1687) destroy_workqueue(cifsoplockd_wq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1688) destroy_workqueue(decrypt_wq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1689) destroy_workqueue(fileinfo_put_wq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1690) destroy_workqueue(cifsiod_wq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1691) cifs_proc_clean();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1692) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1693)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1694) MODULE_AUTHOR("Steve French");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1695) MODULE_LICENSE("GPL"); /* combination of LGPL + GPL source behaves as GPL */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1696) MODULE_IMPORT_NS(ANDROID_GKI_VFS_EXPORT_ONLY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1697) MODULE_DESCRIPTION
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1698) ("VFS to access SMB3 servers e.g. Samba, Macs, Azure and Windows (and "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1699) "also older servers complying with the SNIA CIFS Specification)");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1700) MODULE_VERSION(CIFS_VERSION);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1701) MODULE_SOFTDEP("ecb");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1702) MODULE_SOFTDEP("hmac");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1703) MODULE_SOFTDEP("md4");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1704) MODULE_SOFTDEP("md5");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1705) MODULE_SOFTDEP("nls");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1706) MODULE_SOFTDEP("aes");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1707) MODULE_SOFTDEP("cmac");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1708) MODULE_SOFTDEP("sha256");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1709) MODULE_SOFTDEP("sha512");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1710) MODULE_SOFTDEP("aead2");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1711) MODULE_SOFTDEP("ccm");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1712) MODULE_SOFTDEP("gcm");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1713) module_init(init_cifs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1714) module_exit(exit_cifs)
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
3 Commits
0 Branches
0 Tags