LXR linux/fs/cifs/cifs_fs

   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
  57struct cifs_sb_info {
  58        struct rb_root tlink_tree;
  59        spinlock_t tlink_tree_lock;
  60        struct tcon_link *master_tlink;
  61        struct nls_table *local_nls;
  62        unsigned int bsize;
  63        unsigned int rsize;
  64        unsigned int wsize;
  65        unsigned long actimeo; /* attribute cache timeout (jiffies) */
  66        atomic_t active;
  67        kuid_t  mnt_uid;
  68        kgid_t  mnt_gid;
  69        kuid_t  mnt_backupuid;
  70        kgid_t  mnt_backupgid;
  71        umode_t mnt_file_mode;
  72        umode_t mnt_dir_mode;
  73        unsigned int mnt_cifs_flags;
  74        char   *mountdata; /* options received at mount time or via DFS refs */
  75        struct delayed_work prune_tlinks;
  76        struct rcu_head rcu;
  77
  78        /* only used when CIFS_MOUNT_USE_PREFIX_PATH is set */
  79        char *prepath;
  80
  81        /*
  82         * Path initially provided by the mount call. We might connect
  83         * to something different via DFS but we want to keep it to do
  84         * failover properly.
  85         */
  86        char *origin_fullpath; /* \\HOST\SHARE\[OPTIONAL PATH] */
  87        /*
  88         * Indicate whether serverino option was turned off later
  89         * (cifs_autodisable_serverino) in order to match new mounts.
  90         */
  91        bool mnt_cifs_serverino_autodisabled;
  92};
  93#endif                          /* _CIFS_FS_SB_H */
  94