1 /* SPDX-License-Identifier: LGPL-2.1 */
2 /*
3 *
4 * Copyright (c) International Business Machines Corp., 2002,2004
5 * Author(s): Steve French (sfrench@us.ibm.com)
6 *
7 */
8 #include <linux/rbtree.h>
9
10 #ifndef _CIFS_FS_SB_H
11 #define _CIFS_FS_SB_H
12
13 #include <linux/backing-dev.h>
14
15 #define CIFS_MOUNT_NO_PERM 1 /* do not do client vfs_perm check */
16 #define CIFS_MOUNT_SET_UID 2 /* set current's euid in create etc. */
17 #define CIFS_MOUNT_SERVER_INUM 4 /* inode numbers from uniqueid from server */
18 #define CIFS_MOUNT_DIRECT_IO 8 /* do not write nor read through page cache */
19 #define CIFS_MOUNT_NO_XATTR 0x10 /* if set - disable xattr support */
20 #define CIFS_MOUNT_MAP_SPECIAL_CHR 0x20 /* remap illegal chars in filenames */
21 #define CIFS_MOUNT_POSIX_PATHS 0x40 /* Negotiate posix pathnames if possible*/
22 #define CIFS_MOUNT_UNX_EMUL 0x80 /* Network compat with SFUnix emulation */
23 #define CIFS_MOUNT_NO_BRL 0x100 /* No sending byte range locks to srv */
24 #define CIFS_MOUNT_CIFS_ACL 0x200 /* send ACL requests to non-POSIX srv */
25 #define CIFS_MOUNT_OVERR_UID 0x400 /* override uid returned from server */
26 #define CIFS_MOUNT_OVERR_GID 0x800 /* override gid returned from server */
27 #define CIFS_MOUNT_DYNPERM 0x1000 /* allow in-memory only mode setting */
28 #define CIFS_MOUNT_NOPOSIXBRL 0x2000 /* mandatory not posix byte range lock */
29 #define CIFS_MOUNT_NOSSYNC 0x4000 /* don't do slow SMBflush on every sync*/
30 #define CIFS_MOUNT_FSCACHE 0x8000 /* local caching enabled */
31 #define CIFS_MOUNT_MF_SYMLINKS 0x10000 /* Minshall+French Symlinks enabled */
32 #define CIFS_MOUNT_MULTIUSER 0x20000 /* multiuser mount */
33 #define CIFS_MOUNT_STRICT_IO 0x40000 /* strict cache mode */
34 #define CIFS_MOUNT_RWPIDFORWARD 0x80000 /* use pid forwarding for rw */
35 #define CIFS_MOUNT_POSIXACL 0x100000 /* mirror of SB_POSIXACL in mnt_cifs_flags */
36 #define CIFS_MOUNT_CIFS_BACKUPUID 0x200000 /* backup intent bit for a user */
37 #define CIFS_MOUNT_CIFS_BACKUPGID 0x400000 /* backup intent bit for a group */
38 #define CIFS_MOUNT_MAP_SFM_CHR 0x800000 /* SFM/MAC mapping for illegal chars */
39 #define CIFS_MOUNT_USE_PREFIX_PATH 0x1000000 /* make subpath with unaccessible
40 * root mountable
41 */
42 #define CIFS_MOUNT_UID_FROM_ACL 0x2000000 /* try to get UID via special SID */
43 #define CIFS_MOUNT_NO_HANDLE_CACHE 0x4000000 /* disable caching dir handles */
44 #define CIFS_MOUNT_NO_DFS 0x8000000 /* disable DFS resolving */
45 #define CIFS_MOUNT_MODE_FROM_SID 0x10000000 /* retrieve mode from special ACE */
46 #define CIFS_MOUNT_RO_CACHE 0x20000000 /* assumes share will not change */
47 #define CIFS_MOUNT_RW_CACHE 0x40000000 /* assumes only client accessing */
48 #define CIFS_MOUNT_SHUTDOWN 0x80000000
49
50 struct cifs_sb_info {
51 struct rb_root tlink_tree;
52 spinlock_t tlink_tree_lock;
53 struct tcon_link *master_tlink;
54 struct nls_table *local_nls;
55 struct smb3_fs_context *ctx;
56 atomic_t active;
57 unsigned int mnt_cifs_flags;
58 struct delayed_work prune_tlinks;
59 struct rcu_head rcu;
60
61 /* only used when CIFS_MOUNT_USE_PREFIX_PATH is set */
62 char *prepath;
63
64 /*
65 * Indicate whether serverino option was turned off later
66 * (cifs_autodisable_serverino) in order to match new mounts.
67 */
68 bool mnt_cifs_serverino_autodisabled;
69 /*
70 * Available once the mount has completed.
71 */
72 struct dentry *root;
73 };
74 #endif /* _CIFS_FS_SB_H */
75
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