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
50struct 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