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 * Canonical DFS path initially provided by the mount call. We might connect to something 66 * different via DFS but we want to keep it to do failover properly. 67 */ 68 char *origin_fullpath; /* \\HOST\SHARE\[OPTIONAL PATH] */ 69 /* randomly generated 128-bit number for indexing dfs mount groups in referral cache */ 70 uuid_t dfs_mount_id; 71 /* 72 * Indicate whether serverino option was turned off later 73 * (cifs_autodisable_serverino) in order to match new mounts. 74 */ 75 bool mnt_cifs_serverino_autodisabled; 76 /* 77 * Available once the mount has completed. 78 */ 79 struct dentry *root; 80}; 81#endif /* _CIFS_FS_SB_H */ 82