^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * linux/fs/nfs/super.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 1992 Rick Sladkey
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * nfs superblock handling functions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Modularised by Alan Cox <alan@lxorguk.ukuu.org.uk>, while hacking some
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * experimental NFS changes. Modularisation taken straight from SYS5 fs.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * Change to nfs_read_super() to permit NFS mounts to multi-homed hosts.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * J.S.Peatfield@damtp.cam.ac.uk
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * Split from inode.c by David Howells <dhowells@redhat.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * - superblocks are indexed on server only - all inodes, dentries, etc. associated with a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * particular server are held in the same superblock
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * - NFS superblocks can have several effective roots to the dentry tree
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * - directory type roots are spliced into the tree when a path from one root reaches the root
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * of another (see nfs_lookup())
^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) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/time.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <linux/mm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include <linux/stat.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #include <linux/unistd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #include <linux/sunrpc/clnt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #include <linux/sunrpc/addr.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #include <linux/sunrpc/stats.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #include <linux/sunrpc/metrics.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #include <linux/sunrpc/xprtsock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #include <linux/sunrpc/xprtrdma.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #include <linux/nfs_fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #include <linux/nfs_mount.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #include <linux/nfs4_mount.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #include <linux/lockd/bind.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #include <linux/seq_file.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #include <linux/mount.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #include <linux/namei.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #include <linux/vfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) #include <linux/inet.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #include <linux/in6.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #include <net/ipv6.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #include <linux/netdevice.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #include <linux/nfs_xdr.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #include <linux/magic.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) #include <linux/parser.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #include <linux/nsproxy.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) #include <linux/rcupdate.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) #include <linux/nfs_ssc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) #include "nfs4_fs.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) #include "callback.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) #include "delegation.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) #include "iostat.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) #include "internal.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) #include "fscache.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) #include "nfs4session.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) #include "pnfs.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) #include "nfs.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) #define NFSDBG_FACILITY NFSDBG_VFS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) const struct super_operations nfs_sops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) .alloc_inode = nfs_alloc_inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) .free_inode = nfs_free_inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) .write_inode = nfs_write_inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) .drop_inode = nfs_drop_inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) .statfs = nfs_statfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) .evict_inode = nfs_evict_inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) .umount_begin = nfs_umount_begin,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) .show_options = nfs_show_options,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) .show_devname = nfs_show_devname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) .show_path = nfs_show_path,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) .show_stats = nfs_show_stats,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) EXPORT_SYMBOL_GPL(nfs_sops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) static const struct nfs_ssc_client_ops nfs_ssc_clnt_ops_tbl = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) .sco_sb_deactive = nfs_sb_deactive,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) #if IS_ENABLED(CONFIG_NFS_V4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) static int __init register_nfs4_fs(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) return register_filesystem(&nfs4_fs_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) static void unregister_nfs4_fs(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) unregister_filesystem(&nfs4_fs_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) static int __init register_nfs4_fs(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) static void unregister_nfs4_fs(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) static void nfs_ssc_register_ops(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) nfs_ssc_register(&nfs_ssc_clnt_ops_tbl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) static void nfs_ssc_unregister_ops(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) nfs_ssc_unregister(&nfs_ssc_clnt_ops_tbl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) static struct shrinker acl_shrinker = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) .count_objects = nfs_access_cache_count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) .scan_objects = nfs_access_cache_scan,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) .seeks = DEFAULT_SEEKS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) * Register the NFS filesystems
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) int __init register_nfs_fs(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) ret = register_filesystem(&nfs_fs_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) goto error_0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) ret = register_nfs4_fs();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) goto error_1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) ret = nfs_register_sysctl();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) goto error_2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) ret = register_shrinker(&acl_shrinker);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) goto error_3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) nfs_ssc_register_ops();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) error_3:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) nfs_unregister_sysctl();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) error_2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) unregister_nfs4_fs();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) error_1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) unregister_filesystem(&nfs_fs_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) error_0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) * Unregister the NFS filesystems
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) void __exit unregister_nfs_fs(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) unregister_shrinker(&acl_shrinker);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) nfs_unregister_sysctl();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) unregister_nfs4_fs();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) nfs_ssc_unregister_ops();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) unregister_filesystem(&nfs_fs_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) bool nfs_sb_active(struct super_block *sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) struct nfs_server *server = NFS_SB(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) if (!atomic_inc_not_zero(&sb->s_active))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) if (atomic_inc_return(&server->active) != 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) atomic_dec(&sb->s_active);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) EXPORT_SYMBOL_GPL(nfs_sb_active);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) void nfs_sb_deactive(struct super_block *sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) struct nfs_server *server = NFS_SB(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) if (atomic_dec_and_test(&server->active))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) deactivate_super(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) EXPORT_SYMBOL_GPL(nfs_sb_deactive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) static int __nfs_list_for_each_server(struct list_head *head,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) int (*fn)(struct nfs_server *, void *),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) struct nfs_server *server, *last = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) list_for_each_entry_rcu(server, head, client_link) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) if (!(server->super && nfs_sb_active(server->super)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) if (last)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) nfs_sb_deactive(last->super);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) last = server;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) ret = fn(server, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) if (last)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) nfs_sb_deactive(last->super);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) int nfs_client_for_each_server(struct nfs_client *clp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) int (*fn)(struct nfs_server *, void *),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) return __nfs_list_for_each_server(&clp->cl_superblocks, fn, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) EXPORT_SYMBOL_GPL(nfs_client_for_each_server);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) * Deliver file system statistics to userspace
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) int nfs_statfs(struct dentry *dentry, struct kstatfs *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) struct nfs_server *server = NFS_SB(dentry->d_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) unsigned char blockbits;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) unsigned long blockres;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) struct nfs_fh *fh = NFS_FH(d_inode(dentry));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) struct nfs_fsstat res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) int error = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) res.fattr = nfs_alloc_fattr();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) if (res.fattr == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) goto out_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) error = server->nfs_client->rpc_ops->statfs(server, fh, &res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) if (unlikely(error == -ESTALE)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) struct dentry *pd_dentry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) pd_dentry = dget_parent(dentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) nfs_zap_caches(d_inode(pd_dentry));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) dput(pd_dentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) nfs_free_fattr(res.fattr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) if (error < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) goto out_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) buf->f_type = NFS_SUPER_MAGIC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) * Current versions of glibc do not correctly handle the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) * case where f_frsize != f_bsize. Eventually we want to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) * report the value of wtmult in this field.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) buf->f_frsize = dentry->d_sb->s_blocksize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) * On most *nix systems, f_blocks, f_bfree, and f_bavail
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) * are reported in units of f_frsize. Linux hasn't had
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) * an f_frsize field in its statfs struct until recently,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) * thus historically Linux's sys_statfs reports these
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) * fields in units of f_bsize.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) buf->f_bsize = dentry->d_sb->s_blocksize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) blockbits = dentry->d_sb->s_blocksize_bits;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) blockres = (1 << blockbits) - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) buf->f_blocks = (res.tbytes + blockres) >> blockbits;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) buf->f_bfree = (res.fbytes + blockres) >> blockbits;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) buf->f_bavail = (res.abytes + blockres) >> blockbits;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) buf->f_files = res.tfiles;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) buf->f_ffree = res.afiles;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) buf->f_namelen = server->namelen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) out_err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) dprintk("%s: statfs error = %d\n", __func__, -error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) EXPORT_SYMBOL_GPL(nfs_statfs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) * Map the security flavour number to a name
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) static const char *nfs_pseudoflavour_to_name(rpc_authflavor_t flavour)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) static const struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) rpc_authflavor_t flavour;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) const char *str;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) } sec_flavours[NFS_AUTH_INFO_MAX_FLAVORS] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) /* update NFS_AUTH_INFO_MAX_FLAVORS when this list changes! */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) { RPC_AUTH_NULL, "null" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) { RPC_AUTH_UNIX, "sys" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) { RPC_AUTH_GSS_KRB5, "krb5" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) { RPC_AUTH_GSS_KRB5I, "krb5i" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) { RPC_AUTH_GSS_KRB5P, "krb5p" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) { RPC_AUTH_GSS_LKEY, "lkey" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) { RPC_AUTH_GSS_LKEYI, "lkeyi" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) { RPC_AUTH_GSS_LKEYP, "lkeyp" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) { RPC_AUTH_GSS_SPKM, "spkm" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) { RPC_AUTH_GSS_SPKMI, "spkmi" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) { RPC_AUTH_GSS_SPKMP, "spkmp" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) { UINT_MAX, "unknown" }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) for (i = 0; sec_flavours[i].flavour != UINT_MAX; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) if (sec_flavours[i].flavour == flavour)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) return sec_flavours[i].str;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) static void nfs_show_mountd_netid(struct seq_file *m, struct nfs_server *nfss,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) int showdefaults)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) struct sockaddr *sap = (struct sockaddr *) &nfss->mountd_address;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) char *proto = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) switch (sap->sa_family) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) case AF_INET:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) switch (nfss->mountd_protocol) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) case IPPROTO_UDP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) proto = RPCBIND_NETID_UDP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) case IPPROTO_TCP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) proto = RPCBIND_NETID_TCP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) case AF_INET6:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) switch (nfss->mountd_protocol) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) case IPPROTO_UDP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) proto = RPCBIND_NETID_UDP6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) case IPPROTO_TCP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) proto = RPCBIND_NETID_TCP6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) if (proto || showdefaults)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) seq_printf(m, ",mountproto=%s", proto ?: "auto");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) static void nfs_show_mountd_options(struct seq_file *m, struct nfs_server *nfss,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) int showdefaults)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) struct sockaddr *sap = (struct sockaddr *)&nfss->mountd_address;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) if (nfss->flags & NFS_MOUNT_LEGACY_INTERFACE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) switch (sap->sa_family) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) case AF_INET: {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) struct sockaddr_in *sin = (struct sockaddr_in *)sap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) seq_printf(m, ",mountaddr=%pI4", &sin->sin_addr.s_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) case AF_INET6: {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) seq_printf(m, ",mountaddr=%pI6c", &sin6->sin6_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) if (showdefaults)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) seq_puts(m, ",mountaddr=unspecified");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) if (nfss->mountd_version || showdefaults)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) seq_printf(m, ",mountvers=%u", nfss->mountd_version);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) if ((nfss->mountd_port &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) nfss->mountd_port != (unsigned short)NFS_UNSPEC_PORT) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) showdefaults)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) seq_printf(m, ",mountport=%u", nfss->mountd_port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) nfs_show_mountd_netid(m, nfss, showdefaults);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) #if IS_ENABLED(CONFIG_NFS_V4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) static void nfs_show_nfsv4_options(struct seq_file *m, struct nfs_server *nfss,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) int showdefaults)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) struct nfs_client *clp = nfss->nfs_client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) seq_printf(m, ",clientaddr=%s", clp->cl_ipaddr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) static void nfs_show_nfsv4_options(struct seq_file *m, struct nfs_server *nfss,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) int showdefaults)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) static void nfs_show_nfs_version(struct seq_file *m,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) unsigned int version,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) unsigned int minorversion)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) seq_printf(m, ",vers=%u", version);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) if (version == 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) seq_printf(m, ".%u", minorversion);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) * Describe the mount options in force on this server representation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) static void nfs_show_mount_options(struct seq_file *m, struct nfs_server *nfss,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) int showdefaults)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) static const struct proc_nfs_info {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) int flag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) const char *str;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) const char *nostr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) } nfs_info[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) { NFS_MOUNT_SOFT, ",soft", "" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) { NFS_MOUNT_SOFTERR, ",softerr", "" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) { NFS_MOUNT_SOFTREVAL, ",softreval", "" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) { NFS_MOUNT_POSIX, ",posix", "" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) { NFS_MOUNT_NOCTO, ",nocto", "" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) { NFS_MOUNT_NOAC, ",noac", "" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) { NFS_MOUNT_NONLM, ",nolock", "" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) { NFS_MOUNT_NOACL, ",noacl", "" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) { NFS_MOUNT_NORDIRPLUS, ",nordirplus", "" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) { NFS_MOUNT_UNSHARED, ",nosharecache", "" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) { NFS_MOUNT_NORESVPORT, ",noresvport", "" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) { 0, NULL, NULL }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) const struct proc_nfs_info *nfs_infop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) struct nfs_client *clp = nfss->nfs_client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) u32 version = clp->rpc_ops->version;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) int local_flock, local_fcntl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) nfs_show_nfs_version(m, version, clp->cl_minorversion);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) seq_printf(m, ",rsize=%u", nfss->rsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) seq_printf(m, ",wsize=%u", nfss->wsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) if (nfss->bsize != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) seq_printf(m, ",bsize=%u", nfss->bsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) seq_printf(m, ",namlen=%u", nfss->namelen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) if (nfss->acregmin != NFS_DEF_ACREGMIN*HZ || showdefaults)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) seq_printf(m, ",acregmin=%u", nfss->acregmin/HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) if (nfss->acregmax != NFS_DEF_ACREGMAX*HZ || showdefaults)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) seq_printf(m, ",acregmax=%u", nfss->acregmax/HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) if (nfss->acdirmin != NFS_DEF_ACDIRMIN*HZ || showdefaults)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) seq_printf(m, ",acdirmin=%u", nfss->acdirmin/HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) if (nfss->acdirmax != NFS_DEF_ACDIRMAX*HZ || showdefaults)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) seq_printf(m, ",acdirmax=%u", nfss->acdirmax/HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) if (!(nfss->flags & (NFS_MOUNT_SOFT|NFS_MOUNT_SOFTERR)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) seq_puts(m, ",hard");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) for (nfs_infop = nfs_info; nfs_infop->flag; nfs_infop++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) if (nfss->flags & nfs_infop->flag)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) seq_puts(m, nfs_infop->str);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) seq_puts(m, nfs_infop->nostr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) seq_printf(m, ",proto=%s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) rpc_peeraddr2str(nfss->client, RPC_DISPLAY_NETID));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) if (clp->cl_nconnect > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) seq_printf(m, ",nconnect=%u", clp->cl_nconnect);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) if (version == 4) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) if (nfss->port != NFS_PORT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) seq_printf(m, ",port=%u", nfss->port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) if (nfss->port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) seq_printf(m, ",port=%u", nfss->port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) seq_printf(m, ",timeo=%lu", 10U * nfss->client->cl_timeout->to_initval / HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) seq_printf(m, ",retrans=%u", nfss->client->cl_timeout->to_retries);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) seq_printf(m, ",sec=%s", nfs_pseudoflavour_to_name(nfss->client->cl_auth->au_flavor));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) if (version != 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) nfs_show_mountd_options(m, nfss, showdefaults);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) nfs_show_nfsv4_options(m, nfss, showdefaults);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) if (nfss->options & NFS_OPTION_FSCACHE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) seq_puts(m, ",fsc");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) if (nfss->options & NFS_OPTION_MIGRATION)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) seq_puts(m, ",migration");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) if (nfss->flags & NFS_MOUNT_LOOKUP_CACHE_NONEG) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) if (nfss->flags & NFS_MOUNT_LOOKUP_CACHE_NONE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) seq_puts(m, ",lookupcache=none");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) seq_puts(m, ",lookupcache=pos");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) local_flock = nfss->flags & NFS_MOUNT_LOCAL_FLOCK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) local_fcntl = nfss->flags & NFS_MOUNT_LOCAL_FCNTL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) if (!local_flock && !local_fcntl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) seq_puts(m, ",local_lock=none");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) else if (local_flock && local_fcntl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) seq_puts(m, ",local_lock=all");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) else if (local_flock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) seq_puts(m, ",local_lock=flock");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) seq_puts(m, ",local_lock=posix");
^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) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) * Describe the mount options on this VFS mountpoint
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) int nfs_show_options(struct seq_file *m, struct dentry *root)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) struct nfs_server *nfss = NFS_SB(root->d_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) nfs_show_mount_options(m, nfss, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) seq_printf(m, ",addr=%s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) rpc_peeraddr2str(nfss->nfs_client->cl_rpcclient,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) RPC_DISPLAY_ADDR));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) EXPORT_SYMBOL_GPL(nfs_show_options);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) #if IS_ENABLED(CONFIG_NFS_V4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) static void show_lease(struct seq_file *m, struct nfs_server *server)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) struct nfs_client *clp = server->nfs_client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) unsigned long expire;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) seq_printf(m, ",lease_time=%ld", clp->cl_lease_time / HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) expire = clp->cl_last_renewal + clp->cl_lease_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) seq_printf(m, ",lease_expired=%ld",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) time_after(expire, jiffies) ? 0 : (jiffies - expire) / HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) #ifdef CONFIG_NFS_V4_1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) static void show_sessions(struct seq_file *m, struct nfs_server *server)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) if (nfs4_has_session(server->nfs_client))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) seq_puts(m, ",sessions");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) static void show_sessions(struct seq_file *m, struct nfs_server *server) {}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) #ifdef CONFIG_NFS_V4_1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) static void show_pnfs(struct seq_file *m, struct nfs_server *server)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) seq_printf(m, ",pnfs=");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) if (server->pnfs_curr_ld)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) seq_printf(m, "%s", server->pnfs_curr_ld->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) seq_printf(m, "not configured");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) static void show_implementation_id(struct seq_file *m, struct nfs_server *nfss)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) if (nfss->nfs_client && nfss->nfs_client->cl_implid) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) struct nfs41_impl_id *impl_id = nfss->nfs_client->cl_implid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) seq_printf(m, "\n\timpl_id:\tname='%s',domain='%s',"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) "date='%llu,%u'",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) impl_id->name, impl_id->domain,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) impl_id->date.seconds, impl_id->date.nseconds);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) #if IS_ENABLED(CONFIG_NFS_V4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) static void show_pnfs(struct seq_file *m, struct nfs_server *server)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) static void show_implementation_id(struct seq_file *m, struct nfs_server *nfss)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) int nfs_show_devname(struct seq_file *m, struct dentry *root)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) char *page = (char *) __get_free_page(GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) char *devname, *dummy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) int err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) if (!page)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) devname = nfs_path(&dummy, root, page, PAGE_SIZE, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) if (IS_ERR(devname))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) err = PTR_ERR(devname);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) seq_escape(m, devname, " \t\n\\");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) free_page((unsigned long)page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) EXPORT_SYMBOL_GPL(nfs_show_devname);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) int nfs_show_path(struct seq_file *m, struct dentry *dentry)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) seq_puts(m, "/");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) EXPORT_SYMBOL_GPL(nfs_show_path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) * Present statistical information for this VFS mountpoint
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) int nfs_show_stats(struct seq_file *m, struct dentry *root)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) int i, cpu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) struct nfs_server *nfss = NFS_SB(root->d_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) struct rpc_auth *auth = nfss->client->cl_auth;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) struct nfs_iostats totals = { };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) seq_printf(m, "statvers=%s", NFS_IOSTAT_VERS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) * Display all mount option settings
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) seq_puts(m, "\n\topts:\t");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) seq_puts(m, sb_rdonly(root->d_sb) ? "ro" : "rw");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) seq_puts(m, root->d_sb->s_flags & SB_SYNCHRONOUS ? ",sync" : "");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) seq_puts(m, root->d_sb->s_flags & SB_NOATIME ? ",noatime" : "");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) seq_puts(m, root->d_sb->s_flags & SB_NODIRATIME ? ",nodiratime" : "");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) nfs_show_mount_options(m, nfss, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) seq_printf(m, "\n\tage:\t%lu", (jiffies - nfss->mount_time) / HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) show_implementation_id(m, nfss);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) seq_puts(m, "\n\tcaps:\t");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) seq_printf(m, "caps=0x%x", nfss->caps);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) seq_printf(m, ",wtmult=%u", nfss->wtmult);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) seq_printf(m, ",dtsize=%u", nfss->dtsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) seq_printf(m, ",bsize=%u", nfss->bsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) seq_printf(m, ",namlen=%u", nfss->namelen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) #if IS_ENABLED(CONFIG_NFS_V4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) if (nfss->nfs_client->rpc_ops->version == 4) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) seq_puts(m, "\n\tnfsv4:\t");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) seq_printf(m, "bm0=0x%x", nfss->attr_bitmask[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) seq_printf(m, ",bm1=0x%x", nfss->attr_bitmask[1]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) seq_printf(m, ",bm2=0x%x", nfss->attr_bitmask[2]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) seq_printf(m, ",acl=0x%x", nfss->acl_bitmask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) show_sessions(m, nfss);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) show_pnfs(m, nfss);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) show_lease(m, nfss);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) * Display security flavor in effect for this mount
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) seq_printf(m, "\n\tsec:\tflavor=%u", auth->au_ops->au_flavor);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) if (auth->au_flavor)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) seq_printf(m, ",pseudoflavor=%u", auth->au_flavor);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) * Display superblock I/O counters
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) for_each_possible_cpu(cpu) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) struct nfs_iostats *stats;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) preempt_disable();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) stats = per_cpu_ptr(nfss->io_stats, cpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) for (i = 0; i < __NFSIOS_COUNTSMAX; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) totals.events[i] += stats->events[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) for (i = 0; i < __NFSIOS_BYTESMAX; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) totals.bytes[i] += stats->bytes[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) #ifdef CONFIG_NFS_FSCACHE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) for (i = 0; i < __NFSIOS_FSCACHEMAX; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) totals.fscache[i] += stats->fscache[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) preempt_enable();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) seq_puts(m, "\n\tevents:\t");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) for (i = 0; i < __NFSIOS_COUNTSMAX; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) seq_printf(m, "%lu ", totals.events[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) seq_puts(m, "\n\tbytes:\t");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) for (i = 0; i < __NFSIOS_BYTESMAX; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) seq_printf(m, "%Lu ", totals.bytes[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) #ifdef CONFIG_NFS_FSCACHE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) if (nfss->options & NFS_OPTION_FSCACHE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) seq_puts(m, "\n\tfsc:\t");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) for (i = 0; i < __NFSIOS_FSCACHEMAX; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) seq_printf(m, "%Lu ", totals.fscache[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) seq_putc(m, '\n');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) rpc_clnt_show_stats(m, nfss->client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) EXPORT_SYMBOL_GPL(nfs_show_stats);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) * Begin unmount by attempting to remove all automounted mountpoints we added
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) * in response to xdev traversals and referrals
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) void nfs_umount_begin(struct super_block *sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) struct nfs_server *server;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) struct rpc_clnt *rpc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) server = NFS_SB(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) /* -EIO all pending I/O */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) rpc = server->client_acl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) if (!IS_ERR(rpc))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) rpc_killall_tasks(rpc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) rpc = server->client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) if (!IS_ERR(rpc))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) rpc_killall_tasks(rpc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) EXPORT_SYMBOL_GPL(nfs_umount_begin);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) * Return true if 'match' is in auth_info or auth_info is empty.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) * Return false otherwise.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) bool nfs_auth_info_match(const struct nfs_auth_info *auth_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) rpc_authflavor_t match)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) if (!auth_info->flavor_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) for (i = 0; i < auth_info->flavor_len; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) if (auth_info->flavors[i] == match)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) EXPORT_SYMBOL_GPL(nfs_auth_info_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) * Ensure that a specified authtype in ctx->auth_info is supported by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) * the server. Returns 0 and sets ctx->selected_flavor if it's ok, and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) * -EACCES if not.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) static int nfs_verify_authflavors(struct nfs_fs_context *ctx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) rpc_authflavor_t *server_authlist,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) unsigned int count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) rpc_authflavor_t flavor = RPC_AUTH_MAXFLAVOR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) bool found_auth_null = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) * If the sec= mount option is used, the specified flavor or AUTH_NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) * must be in the list returned by the server.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) * AUTH_NULL has a special meaning when it's in the server list - it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) * means that the server will ignore the rpc creds, so any flavor
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) * can be used but still use the sec= that was specified.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) * Note also that the MNT procedure in MNTv1 does not return a list
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) * of supported security flavors. In this case, nfs_mount() fabricates
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) * a security flavor list containing just AUTH_NULL.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) for (i = 0; i < count; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) flavor = server_authlist[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) if (nfs_auth_info_match(&ctx->auth_info, flavor))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) if (flavor == RPC_AUTH_NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) found_auth_null = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) if (found_auth_null) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) flavor = ctx->auth_info.flavors[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) dfprintk(MOUNT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) "NFS: specified auth flavors not supported by server\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) return -EACCES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) ctx->selected_flavor = flavor;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) dfprintk(MOUNT, "NFS: using auth flavor %u\n", ctx->selected_flavor);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) * Use the remote server's MOUNT service to request the NFS file handle
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) * corresponding to the provided path.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) static int nfs_request_mount(struct fs_context *fc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) struct nfs_fh *root_fh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) rpc_authflavor_t *server_authlist,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) unsigned int *server_authlist_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) struct nfs_fs_context *ctx = nfs_fc2context(fc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) struct nfs_mount_request request = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) .sap = (struct sockaddr *)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) &ctx->mount_server.address,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) .dirpath = ctx->nfs_server.export_path,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) .protocol = ctx->mount_server.protocol,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) .fh = root_fh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) .noresvport = ctx->flags & NFS_MOUNT_NORESVPORT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) .auth_flav_len = server_authlist_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) .auth_flavs = server_authlist,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) .net = fc->net_ns,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) int status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) if (ctx->mount_server.version == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) switch (ctx->version) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) ctx->mount_server.version = NFS_MNT3_VERSION;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) case 2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) ctx->mount_server.version = NFS_MNT_VERSION;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) request.version = ctx->mount_server.version;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) if (ctx->mount_server.hostname)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) request.hostname = ctx->mount_server.hostname;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) request.hostname = ctx->nfs_server.hostname;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) * Construct the mount server's address.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) if (ctx->mount_server.address.sa_family == AF_UNSPEC) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) memcpy(request.sap, &ctx->nfs_server.address,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) ctx->nfs_server.addrlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) ctx->mount_server.addrlen = ctx->nfs_server.addrlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) request.salen = ctx->mount_server.addrlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) nfs_set_port(request.sap, &ctx->mount_server.port, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) * Now ask the mount server to map our export path
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) * to a file handle.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) status = nfs_mount(&request);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) if (status != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) dfprintk(MOUNT, "NFS: unable to mount server %s, error %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) request.hostname, status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) return status;
^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) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) static struct nfs_server *nfs_try_mount_request(struct fs_context *fc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) struct nfs_fs_context *ctx = nfs_fc2context(fc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) int status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) bool tried_auth_unix = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) bool auth_null_in_list = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) struct nfs_server *server = ERR_PTR(-EACCES);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) rpc_authflavor_t authlist[NFS_MAX_SECFLAVORS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) unsigned int authlist_len = ARRAY_SIZE(authlist);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) status = nfs_request_mount(fc, ctx->mntfh, authlist, &authlist_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) if (status)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) return ERR_PTR(status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) * Was a sec= authflavor specified in the options? First, verify
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) * whether the server supports it, and then just try to use it if so.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) if (ctx->auth_info.flavor_len > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) status = nfs_verify_authflavors(ctx, authlist, authlist_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) dfprintk(MOUNT, "NFS: using auth flavor %u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) ctx->selected_flavor);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) if (status)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) return ERR_PTR(status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) return ctx->nfs_mod->rpc_ops->create_server(fc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) * No sec= option was provided. RFC 2623, section 2.7 suggests we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) * SHOULD prefer the flavor listed first. However, some servers list
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) * AUTH_NULL first. Avoid ever choosing AUTH_NULL.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) for (i = 0; i < authlist_len; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) rpc_authflavor_t flavor;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) struct rpcsec_gss_info info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) flavor = authlist[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) switch (flavor) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) case RPC_AUTH_UNIX:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) tried_auth_unix = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) case RPC_AUTH_NULL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) auth_null_in_list = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) if (rpcauth_get_gssinfo(flavor, &info) != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) dfprintk(MOUNT, "NFS: attempting to use auth flavor %u\n", flavor);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) ctx->selected_flavor = flavor;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) server = ctx->nfs_mod->rpc_ops->create_server(fc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) if (!IS_ERR(server))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) return server;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) * Nothing we tried so far worked. At this point, give up if we've
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) * already tried AUTH_UNIX or if the server's list doesn't contain
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) * AUTH_NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) if (tried_auth_unix || !auth_null_in_list)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) return server;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) /* Last chance! Try AUTH_UNIX */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) dfprintk(MOUNT, "NFS: attempting to use auth flavor %u\n", RPC_AUTH_UNIX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) ctx->selected_flavor = RPC_AUTH_UNIX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) return ctx->nfs_mod->rpc_ops->create_server(fc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) int nfs_try_get_tree(struct fs_context *fc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) struct nfs_fs_context *ctx = nfs_fc2context(fc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) if (ctx->need_mount)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) ctx->server = nfs_try_mount_request(fc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) ctx->server = ctx->nfs_mod->rpc_ops->create_server(fc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) return nfs_get_tree_common(fc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) EXPORT_SYMBOL_GPL(nfs_try_get_tree);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) #define NFS_REMOUNT_CMP_FLAGMASK ~(NFS_MOUNT_INTR \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) | NFS_MOUNT_SECURE \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) | NFS_MOUNT_TCP \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) | NFS_MOUNT_VER3 \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) | NFS_MOUNT_KERBEROS \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) | NFS_MOUNT_NONLM \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) | NFS_MOUNT_BROKEN_SUID \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) | NFS_MOUNT_STRICTLOCK \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) | NFS_MOUNT_LEGACY_INTERFACE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) #define NFS_MOUNT_CMP_FLAGMASK (NFS_REMOUNT_CMP_FLAGMASK & \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) ~(NFS_MOUNT_UNSHARED | NFS_MOUNT_NORESVPORT))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) nfs_compare_remount_data(struct nfs_server *nfss,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) struct nfs_fs_context *ctx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) if ((ctx->flags ^ nfss->flags) & NFS_REMOUNT_CMP_FLAGMASK ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) ctx->rsize != nfss->rsize ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) ctx->wsize != nfss->wsize ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) ctx->version != nfss->nfs_client->rpc_ops->version ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967) ctx->minorversion != nfss->nfs_client->cl_minorversion ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) ctx->retrans != nfss->client->cl_timeout->to_retries ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) !nfs_auth_info_match(&ctx->auth_info, nfss->client->cl_auth->au_flavor) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) ctx->acregmin != nfss->acregmin / HZ ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) ctx->acregmax != nfss->acregmax / HZ ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) ctx->acdirmin != nfss->acdirmin / HZ ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) ctx->acdirmax != nfss->acdirmax / HZ ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974) ctx->timeo != (10U * nfss->client->cl_timeout->to_initval / HZ) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) (ctx->options & NFS_OPTION_FSCACHE) != (nfss->options & NFS_OPTION_FSCACHE) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) ctx->nfs_server.port != nfss->port ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) ctx->nfs_server.addrlen != nfss->nfs_client->cl_addrlen ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) !rpc_cmp_addr((struct sockaddr *)&ctx->nfs_server.address,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) (struct sockaddr *)&nfss->nfs_client->cl_addr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) int nfs_reconfigure(struct fs_context *fc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) struct nfs_fs_context *ctx = nfs_fc2context(fc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) struct super_block *sb = fc->root->d_sb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) struct nfs_server *nfss = sb->s_fs_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) sync_filesystem(sb);
^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) * Userspace mount programs that send binary options generally send
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) * them populated with default values. We have no way to know which
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) * ones were explicitly specified. Fall back to legacy behavior and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997) * just return success.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) if (ctx->skip_reconfig_option_check)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) * noac is a special case. It implies -o sync, but that's not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) * necessarily reflected in the mtab options. reconfigure_super
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) * will clear SB_SYNCHRONOUS if -o sync wasn't specified in the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006) * remount options, so we have to explicitly reset it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) if (ctx->flags & NFS_MOUNT_NOAC) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) fc->sb_flags |= SB_SYNCHRONOUS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) fc->sb_flags_mask |= SB_SYNCHRONOUS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) /* compare new mount options with old ones */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014) return nfs_compare_remount_data(nfss, ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016) EXPORT_SYMBOL_GPL(nfs_reconfigure);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) * Finish setting up an NFS superblock
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) static void nfs_fill_super(struct super_block *sb, struct nfs_fs_context *ctx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) struct nfs_server *server = NFS_SB(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) sb->s_blocksize_bits = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026) sb->s_blocksize = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027) sb->s_xattr = server->nfs_client->cl_nfs_mod->xattr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028) sb->s_op = server->nfs_client->cl_nfs_mod->sops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029) if (ctx && ctx->bsize)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) sb->s_blocksize = nfs_block_size(ctx->bsize, &sb->s_blocksize_bits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032) if (server->nfs_client->rpc_ops->version != 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) /* The VFS shouldn't apply the umask to mode bits. We will do
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) * so ourselves when necessary.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) sb->s_flags |= SB_POSIXACL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) sb->s_time_gran = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) sb->s_export_op = &nfs_export_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) sb->s_time_gran = 1000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) if (server->nfs_client->rpc_ops->version != 4) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043) sb->s_time_min = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044) sb->s_time_max = U32_MAX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046) sb->s_time_min = S64_MIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047) sb->s_time_max = S64_MAX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) sb->s_magic = NFS_SUPER_MAGIC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052) /* We probably want something more informative here */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) snprintf(sb->s_id, sizeof(sb->s_id),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054) "%u:%u", MAJOR(sb->s_dev), MINOR(sb->s_dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) if (sb->s_blocksize == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) sb->s_blocksize = nfs_block_bits(server->wsize,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058) &sb->s_blocksize_bits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) nfs_super_set_maxbytes(sb, server->maxfilesize);
^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) static int nfs_compare_mount_options(const struct super_block *s, const struct nfs_server *b,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) const struct fs_context *fc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066) const struct nfs_server *a = s->s_fs_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) const struct rpc_clnt *clnt_a = a->client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) const struct rpc_clnt *clnt_b = b->client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070) if ((s->s_flags & NFS_SB_MASK) != (fc->sb_flags & NFS_SB_MASK))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) goto Ebusy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072) if (a->nfs_client != b->nfs_client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073) goto Ebusy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074) if ((a->flags ^ b->flags) & NFS_MOUNT_CMP_FLAGMASK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) goto Ebusy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076) if (a->wsize != b->wsize)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077) goto Ebusy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) if (a->rsize != b->rsize)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) goto Ebusy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080) if (a->acregmin != b->acregmin)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081) goto Ebusy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082) if (a->acregmax != b->acregmax)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083) goto Ebusy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084) if (a->acdirmin != b->acdirmin)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085) goto Ebusy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086) if (a->acdirmax != b->acdirmax)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087) goto Ebusy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088) if (clnt_a->cl_auth->au_flavor != clnt_b->cl_auth->au_flavor)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) goto Ebusy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091) Ebusy:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095) static int nfs_set_super(struct super_block *s, struct fs_context *fc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097) struct nfs_server *server = fc->s_fs_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) s->s_d_op = server->nfs_client->rpc_ops->dentry_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101) ret = set_anon_super(s, server);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102) if (ret == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103) server->s_dev = s->s_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107) static int nfs_compare_super_address(struct nfs_server *server1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108) struct nfs_server *server2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) struct sockaddr *sap1, *sap2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111) struct rpc_xprt *xprt1 = server1->client->cl_xprt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112) struct rpc_xprt *xprt2 = server2->client->cl_xprt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114) if (!net_eq(xprt1->xprt_net, xprt2->xprt_net))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117) sap1 = (struct sockaddr *)&server1->nfs_client->cl_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118) sap2 = (struct sockaddr *)&server2->nfs_client->cl_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120) if (sap1->sa_family != sap2->sa_family)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123) switch (sap1->sa_family) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124) case AF_INET: {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125) struct sockaddr_in *sin1 = (struct sockaddr_in *)sap1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126) struct sockaddr_in *sin2 = (struct sockaddr_in *)sap2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127) if (sin1->sin_addr.s_addr != sin2->sin_addr.s_addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) if (sin1->sin_port != sin2->sin_port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133) case AF_INET6: {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) struct sockaddr_in6 *sin1 = (struct sockaddr_in6 *)sap1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135) struct sockaddr_in6 *sin2 = (struct sockaddr_in6 *)sap2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136) if (!ipv6_addr_equal(&sin1->sin6_addr, &sin2->sin6_addr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138) if (sin1->sin6_port != sin2->sin6_port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149) static int nfs_compare_userns(const struct nfs_server *old,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150) const struct nfs_server *new)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152) const struct user_namespace *oldns = &init_user_ns;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153) const struct user_namespace *newns = &init_user_ns;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155) if (old->client && old->client->cl_cred)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156) oldns = old->client->cl_cred->user_ns;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157) if (new->client && new->client->cl_cred)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158) newns = new->client->cl_cred->user_ns;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159) if (oldns != newns)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164) static int nfs_compare_super(struct super_block *sb, struct fs_context *fc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1165) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1166) struct nfs_server *server = fc->s_fs_info, *old = NFS_SB(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1168) if (!nfs_compare_super_address(old, server))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1169) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1170) /* Note: NFS_MOUNT_UNSHARED == NFS4_MOUNT_UNSHARED */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1171) if (old->flags & NFS_MOUNT_UNSHARED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1172) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1173) if (memcmp(&old->fsid, &server->fsid, sizeof(old->fsid)) != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1174) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1175) if (!nfs_compare_userns(old, server))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1176) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1177) return nfs_compare_mount_options(sb, server, fc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1178) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1180) #ifdef CONFIG_NFS_FSCACHE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1181) static void nfs_get_cache_cookie(struct super_block *sb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1182) struct nfs_fs_context *ctx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1183) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1184) struct nfs_server *nfss = NFS_SB(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1185) char *uniq = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1186) int ulen = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1187)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1188) nfss->fscache_key = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1189) nfss->fscache = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1191) if (!ctx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1192) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1194) if (ctx->clone_data.sb) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1195) struct nfs_server *mnt_s = NFS_SB(ctx->clone_data.sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1196) if (!(mnt_s->options & NFS_OPTION_FSCACHE))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1197) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1198) if (mnt_s->fscache_key) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1199) uniq = mnt_s->fscache_key->key.uniquifier;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1200) ulen = mnt_s->fscache_key->key.uniq_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1201) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1202) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1203) if (!(ctx->options & NFS_OPTION_FSCACHE))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1204) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1205) if (ctx->fscache_uniq) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1206) uniq = ctx->fscache_uniq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1207) ulen = strlen(ctx->fscache_uniq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1208) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1209) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1211) nfs_fscache_get_super_cookie(sb, uniq, ulen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1212) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1213) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1214) static void nfs_get_cache_cookie(struct super_block *sb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1215) struct nfs_fs_context *ctx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1216) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1217) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1218) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1220) int nfs_get_tree_common(struct fs_context *fc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1221) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1222) struct nfs_fs_context *ctx = nfs_fc2context(fc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1223) struct super_block *s;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1224) int (*compare_super)(struct super_block *, struct fs_context *) = nfs_compare_super;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1225) struct nfs_server *server = ctx->server;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1226) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1228) ctx->server = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1229) if (IS_ERR(server))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1230) return PTR_ERR(server);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1232) if (server->flags & NFS_MOUNT_UNSHARED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1233) compare_super = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1234)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1235) /* -o noac implies -o sync */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1236) if (server->flags & NFS_MOUNT_NOAC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1237) fc->sb_flags |= SB_SYNCHRONOUS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1239) if (ctx->clone_data.sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1240) if (ctx->clone_data.sb->s_flags & SB_SYNCHRONOUS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1241) fc->sb_flags |= SB_SYNCHRONOUS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1243) if (server->caps & NFS_CAP_SECURITY_LABEL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1244) fc->lsm_flags |= SECURITY_LSM_NATIVE_LABELS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1246) /* Get a superblock - note that we may end up sharing one that already exists */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1247) fc->s_fs_info = server;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1248) s = sget_fc(fc, compare_super, nfs_set_super);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1249) fc->s_fs_info = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1250) if (IS_ERR(s)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1251) error = PTR_ERR(s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1252) nfs_errorf(fc, "NFS: Couldn't get superblock");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1253) goto out_err_nosb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1254) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1256) if (s->s_fs_info != server) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1257) nfs_free_server(server);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1258) server = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1259) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1260) error = super_setup_bdi_name(s, "%u:%u", MAJOR(server->s_dev),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1261) MINOR(server->s_dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1262) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1263) goto error_splat_super;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1264) s->s_bdi->io_pages = server->rpages;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1265) server->super = s;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1266) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1267)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1268) if (!s->s_root) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1269) unsigned bsize = ctx->clone_data.inherited_bsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1270) /* initial superblock/root creation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1271) nfs_fill_super(s, ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1272) if (bsize) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1273) s->s_blocksize_bits = bsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1274) s->s_blocksize = 1U << bsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1275) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1276) nfs_get_cache_cookie(s, ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1277) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1278)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1279) error = nfs_get_root(s, fc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1280) if (error < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1281) nfs_errorf(fc, "NFS: Couldn't get root dentry");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1282) goto error_splat_super;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1283) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1284)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1285) s->s_flags |= SB_ACTIVE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1286) error = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1287)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1288) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1289) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1290)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1291) out_err_nosb:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1292) nfs_free_server(server);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1293) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1294) error_splat_super:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1295) deactivate_locked_super(s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1296) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1297) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1298)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1299) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1300) * Destroy an NFS2/3 superblock
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1301) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1302) void nfs_kill_super(struct super_block *s)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1303) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1304) struct nfs_server *server = NFS_SB(s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1305) dev_t dev = s->s_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1306)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1307) generic_shutdown_super(s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1308)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1309) nfs_fscache_release_super_cookie(s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1311) nfs_free_server(server);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1312) free_anon_bdev(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1313) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1314) EXPORT_SYMBOL_GPL(nfs_kill_super);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1315)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1316) #if IS_ENABLED(CONFIG_NFS_V4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1318) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1319) * NFS v4 module parameters need to stay in the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1320) * NFS client for backwards compatibility
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1321) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1322) unsigned int nfs_callback_set_tcpport;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1323) unsigned short nfs_callback_nr_threads;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1324) /* Default cache timeout is 10 minutes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1325) unsigned int nfs_idmap_cache_timeout = 600;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1326) /* Turn off NFSv4 uid/gid mapping when using AUTH_SYS */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1327) bool nfs4_disable_idmapping = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1328) unsigned short max_session_slots = NFS4_DEF_SLOT_TABLE_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1329) unsigned short max_session_cb_slots = NFS4_DEF_CB_SLOT_TABLE_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1330) unsigned short send_implementation_id = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1331) char nfs4_client_id_uniquifier[NFS4_CLIENT_ID_UNIQ_LEN] = "";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1332) bool recover_lost_locks = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1333)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1334) EXPORT_SYMBOL_GPL(nfs_callback_nr_threads);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1335) EXPORT_SYMBOL_GPL(nfs_callback_set_tcpport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1336) EXPORT_SYMBOL_GPL(nfs_idmap_cache_timeout);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1337) EXPORT_SYMBOL_GPL(nfs4_disable_idmapping);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1338) EXPORT_SYMBOL_GPL(max_session_slots);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1339) EXPORT_SYMBOL_GPL(max_session_cb_slots);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1340) EXPORT_SYMBOL_GPL(send_implementation_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1341) EXPORT_SYMBOL_GPL(nfs4_client_id_uniquifier);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1342) EXPORT_SYMBOL_GPL(recover_lost_locks);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1343)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1344) #define NFS_CALLBACK_MAXPORTNR (65535U)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1345)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1346) static int param_set_portnr(const char *val, const struct kernel_param *kp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1347) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1348) unsigned long num;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1349) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1350)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1351) if (!val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1352) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1353) ret = kstrtoul(val, 0, &num);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1354) if (ret || num > NFS_CALLBACK_MAXPORTNR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1355) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1356) *((unsigned int *)kp->arg) = num;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1357) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1358) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1359) static const struct kernel_param_ops param_ops_portnr = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1360) .set = param_set_portnr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1361) .get = param_get_uint,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1362) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1363) #define param_check_portnr(name, p) __param_check(name, p, unsigned int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1364)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1365) module_param_named(callback_tcpport, nfs_callback_set_tcpport, portnr, 0644);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1366) module_param_named(callback_nr_threads, nfs_callback_nr_threads, ushort, 0644);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1367) MODULE_PARM_DESC(callback_nr_threads, "Number of threads that will be "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1368) "assigned to the NFSv4 callback channels.");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1369) module_param(nfs_idmap_cache_timeout, int, 0644);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1370) module_param(nfs4_disable_idmapping, bool, 0644);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1371) module_param_string(nfs4_unique_id, nfs4_client_id_uniquifier,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1372) NFS4_CLIENT_ID_UNIQ_LEN, 0600);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1373) MODULE_PARM_DESC(nfs4_disable_idmapping,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1374) "Turn off NFSv4 idmapping when using 'sec=sys'");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1375) module_param(max_session_slots, ushort, 0644);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1376) MODULE_PARM_DESC(max_session_slots, "Maximum number of outstanding NFSv4.1 "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1377) "requests the client will negotiate");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1378) module_param(max_session_cb_slots, ushort, 0644);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1379) MODULE_PARM_DESC(max_session_cb_slots, "Maximum number of parallel NFSv4.1 "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1380) "callbacks the client will process for a given server");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1381) module_param(send_implementation_id, ushort, 0644);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1382) MODULE_PARM_DESC(send_implementation_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1383) "Send implementation ID with NFSv4.1 exchange_id");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1384) MODULE_PARM_DESC(nfs4_unique_id, "nfs_client_id4 uniquifier string");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1385)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1386) module_param(recover_lost_locks, bool, 0644);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1387) MODULE_PARM_DESC(recover_lost_locks,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1388) "If the server reports that a lock might be lost, "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1389) "try to recover it risking data corruption.");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1390)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1391)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1392) #endif /* CONFIG_NFS_V4 */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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