1 /*
2 * fs/cifs/cifs_fs_sb.h
3 *
4 * Copyright (c) International Business Machines Corp., 2002,2004
5 * Author(s): Steve French (sfrench@us.ibm.com)
6 *
7 * This library is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU Lesser General Public License as published
9 * by the Free Software Foundation; either version 2.1 of the License, or
10 * (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
15 * the GNU Lesser General Public License for more details.
16 *
17 */
18 #include <linux/rbtree.h>
19
20 #ifndef _CIFS_FS_SB_H
21 #define _CIFS_FS_SB_H
22
23 #include <linux/backing-dev.h>
24
25 #define CIFS_MOUNT_NO_PERM 1 /* do not do client vfs_perm check */
26 #define CIFS_MOUNT_SET_UID 2 /* set current's euid in create etc. */
27 #define CIFS_MOUNT_SERVER_INUM 4 /* inode numbers from uniqueid from server */
28 #define CIFS_MOUNT_DIRECT_IO 8 /* do not write nor read through page cache */
29 #define CIFS_MOUNT_NO_XATTR 0x10 /* if set - disable xattr support */
30 #define CIFS_MOUNT_MAP_SPECIAL_CHR 0x20 /* remap illegal chars in filenames */
31 #define CIFS_MOUNT_POSIX_PATHS 0x40 /* Negotiate posix pathnames if possible*/
32 #define CIFS_MOUNT_UNX_EMUL 0x80 /* Network compat with SFUnix emulation */
33 #define CIFS_MOUNT_NO_BRL 0x100 /* No sending byte range locks to srv */
34 #define CIFS_MOUNT_CIFS_ACL 0x200 /* send ACL requests to non-POSIX srv */
35 #define CIFS_MOUNT_OVERR_UID 0x400 /* override uid returned from server */
36 #define CIFS_MOUNT_OVERR_GID 0x800 /* override gid returned from server */
37 #define CIFS_MOUNT_DYNPERM 0x1000 /* allow in-memory only mode setting */
38 #define CIFS_MOUNT_NOPOSIXBRL 0x2000 /* mandatory not posix byte range lock */
39 #define CIFS_MOUNT_NOSSYNC 0x4000 /* don't do slow SMBflush on every sync*/
40 #define CIFS_MOUNT_FSCACHE 0x8000 /* local caching enabled */
41 #define CIFS_MOUNT_MF_SYMLINKS 0x10000 /* Minshall+French Symlinks enabled */
42 #define CIFS_MOUNT_MULTIUSER 0x20000 /* multiuser mount */
43 #define CIFS_MOUNT_STRICT_IO 0x40000 /* strict cache mode */
44 #define CIFS_MOUNT_RWPIDFORWARD 0x80000 /* use pid forwarding for rw */
45 #define CIFS_MOUNT_POSIXACL 0x100000 /* mirror of SB_POSIXACL in mnt_cifs_flags */
46 #define CIFS_MOUNT_CIFS_BACKUPUID 0x200000 /* backup intent bit for a user */
47 #define CIFS_MOUNT_CIFS_BACKUPGID 0x400000 /* backup intent bit for a group */
48 #define CIFS_MOUNT_MAP_SFM_CHR 0x800000 /* SFM/MAC mapping for illegal chars */
49 #define CIFS_MOUNT_USE_PREFIX_PATH 0x1000000 /* make subpath with unaccessible
50 * root mountable
51 */
52 #define CIFS_MOUNT_UID_FROM_ACL 0x2000000 /* try to get UID via special SID */
53 #define CIFS_MOUNT_NO_HANDLE_CACHE 0x4000000 /* disable caching dir handles */
54 #define CIFS_MOUNT_NO_DFS 0x8000000 /* disable DFS resolving */
55 #define CIFS_MOUNT_MODE_FROM_SID 0x10000000 /* retrieve mode from special ACE */
56 #define CIFS_MOUNT_RO_CACHE 0x20000000 /* assumes share will not change */
57 #define CIFS_MOUNT_RW_CACHE 0x40000000 /* assumes only client accessing */
58
59 struct cifs_sb_info {
60 struct rb_root tlink_tree;
61 spinlock_t tlink_tree_lock;
62 struct tcon_link *master_tlink;
63 struct nls_table *local_nls;
64 unsigned int bsize;
65 unsigned int rsize;
66 unsigned int wsize;
67 unsigned long actimeo; /* attribute cache timeout (jiffies) */
68 atomic_t active;
69 kuid_t mnt_uid;
70 kgid_t mnt_gid;
71 kuid_t mnt_backupuid;
72 kgid_t mnt_backupgid;
73 umode_t mnt_file_mode;
74 umode_t mnt_dir_mode;
75 unsigned int mnt_cifs_flags;
76 char *mountdata; /* options received at mount time or via DFS refs */
77 struct delayed_work prune_tlinks;
78 struct rcu_head rcu;
79
80 /* only used when CIFS_MOUNT_USE_PREFIX_PATH is set */
81 char *prepath;
82
83 /*
84 * Path initially provided by the mount call. We might connect
85 * to something different via DFS but we want to keep it to do
86 * failover properly.
87 */
88 char *origin_fullpath; /* \\HOST\SHARE\[OPTIONAL PATH] */
89 /*
90 * Indicate whether serverino option was turned off later
91 * (cifs_autodisable_serverino) in order to match new mounts.
92 */
93 bool mnt_cifs_serverino_autodisabled;
94 };
95 #endif /* _CIFS_FS_SB_H */