fs/cifs/cifsfs.h

   1 /*
   2  *   fs/cifs/cifsfs.h
   3  *
   4  *   Copyright (c) International Business Machines  Corp., 2002, 2007
   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  *   You should have received a copy of the GNU Lesser General Public License
  18  *   along with this library; if not, write to the Free Software
  19  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  20  */
  21
  22 #ifndef _CIFSFS_H
  23 #define _CIFSFS_H
  24
  25 #define ROOT_I 2
  26
  27 /*
  28  * ino_t is 32-bits on 32-bit arch. We have to squash the 64-bit value down
  29  * so that it will fit.
  30  */
  31 static inline ino_t
  32 cifs_uniqueid_to_ino_t(u64 fileid)
  33 {
  34         ino_t ino = (ino_t) fileid;
  35         if (sizeof(ino_t) < sizeof(u64))
  36                 ino ^= fileid >> (sizeof(u64)-sizeof(ino_t)) * 8;
  37         return ino;
  38 }
  39
  40 extern struct file_system_type cifs_fs_type;
  41 extern const struct address_space_operations cifs_addr_ops;
  42 extern const struct address_space_operations cifs_addr_ops_smallbuf;
  43
  44 /* Functions related to super block operations */
  45 extern void cifs_sb_active(struct super_block *sb);
  46 extern void cifs_sb_deactive(struct super_block *sb);
  47
  48 /* Functions related to inodes */
  49 extern const struct inode_operations cifs_dir_inode_ops;
  50 extern struct inode *cifs_root_iget(struct super_block *);
  51 extern int cifs_create(struct inode *, struct dentry *, umode_t,
  52                        bool excl);
  53 extern int cifs_atomic_open(struct inode *, struct dentry *,
  54                             struct file *, unsigned, umode_t,
  55                             int *);
  56 extern struct dentry *cifs_lookup(struct inode *, struct dentry *,
  57                                   unsigned int);
  58 extern int cifs_unlink(struct inode *dir, struct dentry *dentry);
  59 extern int cifs_hardlink(struct dentry *, struct inode *, struct dentry *);
  60 extern int cifs_mknod(struct inode *, struct dentry *, umode_t, dev_t);
  61 extern int cifs_mkdir(struct inode *, struct dentry *, umode_t);
  62 extern int cifs_rmdir(struct inode *, struct dentry *);
  63 extern int cifs_rename(struct inode *, struct dentry *, struct inode *,
  64                        struct dentry *);
  65 extern int cifs_revalidate_file_attr(struct file *filp);
  66 extern int cifs_revalidate_dentry_attr(struct dentry *);
  67 extern int cifs_revalidate_file(struct file *filp);
  68 extern int cifs_revalidate_dentry(struct dentry *);
  69 extern int cifs_invalidate_mapping(struct inode *inode);
  70 extern int cifs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
  71 extern int cifs_setattr(struct dentry *, struct iattr *);
  72
  73 extern const struct inode_operations cifs_file_inode_ops;
  74 extern const struct inode_operations cifs_symlink_inode_ops;
  75 extern const struct inode_operations cifs_dfs_referral_inode_operations;
  76
  77
  78 /* Functions related to files and directories */
  79 extern const struct file_operations cifs_file_ops;
  80 extern const struct file_operations cifs_file_direct_ops; /* if directio mnt */
  81 extern const struct file_operations cifs_file_strict_ops; /* if strictio mnt */
  82 extern const struct file_operations cifs_file_nobrl_ops; /* no brlocks */
  83 extern const struct file_operations cifs_file_direct_nobrl_ops;
  84 extern const struct file_operations cifs_file_strict_nobrl_ops;
  85 extern int cifs_open(struct inode *inode, struct file *file);
  86 extern int cifs_close(struct inode *inode, struct file *file);
  87 extern int cifs_closedir(struct inode *inode, struct file *file);
  88 extern ssize_t cifs_user_readv(struct kiocb *iocb, const struct iovec *iov,
  89                                unsigned long nr_segs, loff_t pos);
  90 extern ssize_t cifs_strict_readv(struct kiocb *iocb, const struct iovec *iov,
  91                                  unsigned long nr_segs, loff_t pos);
  92 extern ssize_t cifs_user_writev(struct kiocb *iocb, const struct iovec *iov,
  93                                 unsigned long nr_segs, loff_t pos);
  94 extern ssize_t cifs_strict_writev(struct kiocb *iocb, const struct iovec *iov,
  95                                   unsigned long nr_segs, loff_t pos);
  96 extern int cifs_lock(struct file *, int, struct file_lock *);
  97 extern int cifs_fsync(struct file *, loff_t, loff_t, int);
  98 extern int cifs_strict_fsync(struct file *, loff_t, loff_t, int);
  99 extern int cifs_flush(struct file *, fl_owner_t id);
 100 extern int cifs_file_mmap(struct file * , struct vm_area_struct *);
 101 extern int cifs_file_strict_mmap(struct file * , struct vm_area_struct *);
 102 extern const struct file_operations cifs_dir_ops;
 103 extern int cifs_dir_open(struct inode *inode, struct file *file);
 104 extern int cifs_readdir(struct file *file, struct dir_context *ctx);
 105
 106 /* Functions related to dir entries */
 107 extern const struct dentry_operations cifs_dentry_ops;
 108 extern const struct dentry_operations cifs_ci_dentry_ops;
 109
 110 #ifdef CONFIG_CIFS_DFS_UPCALL
 111 extern struct vfsmount *cifs_dfs_d_automount(struct path *path);
 112 #else
 113 #define cifs_dfs_d_automount NULL
 114 #endif
 115
 116 /* Functions related to symlinks */
 117 extern void *cifs_follow_link(struct dentry *direntry, struct nameidata *nd);
 118 extern void cifs_put_link(struct dentry *direntry,
 119                           struct nameidata *nd, void *);
 120 extern int cifs_readlink(struct dentry *direntry, char __user *buffer,
 121                          int buflen);
 122 extern int cifs_symlink(struct inode *inode, struct dentry *direntry,
 123                         const char *symname);
 124 extern int      cifs_removexattr(struct dentry *, const char *);
 125 extern int      cifs_setxattr(struct dentry *, const char *, const void *,
 126                         size_t, int);
 127 extern ssize_t  cifs_getxattr(struct dentry *, const char *, void *, size_t);
 128 extern ssize_t  cifs_listxattr(struct dentry *, char *, size_t);
 129 extern long cifs_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
 130
 131 #ifdef CONFIG_CIFS_NFSD_EXPORT
 132 extern const struct export_operations cifs_export_ops;
 133 #endif /* CONFIG_CIFS_NFSD_EXPORT */
 134
 135 #define CIFS_VERSION   "2.01"
 136 #endif                          /* _CIFSFS_H */