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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 MS_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 
54 struct cifs_sb_info {
55 	struct rb_root tlink_tree;
56 	spinlock_t tlink_tree_lock;
57 	struct tcon_link *master_tlink;
58 	struct nls_table *local_nls;
59 	unsigned int rsize;
60 	unsigned int wsize;
61 	unsigned long actimeo; /* attribute cache timeout (jiffies) */
62 	atomic_t active;
63 	kuid_t	mnt_uid;
64 	kgid_t	mnt_gid;
65 	kuid_t	mnt_backupuid;
66 	kgid_t	mnt_backupgid;
67 	umode_t	mnt_file_mode;
68 	umode_t	mnt_dir_mode;
69 	unsigned int mnt_cifs_flags;
70 	char   *mountdata; /* options received at mount time or via DFS refs */
71 	struct backing_dev_info bdi;
72 	struct delayed_work prune_tlinks;
73 	struct rcu_head rcu;
74 	char *prepath;
75 };
76 #endif				/* _CIFS_FS_SB_H */
77