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cifsfs.h
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1 /*
2  * fs/cifs/cifsfs.h
3  *
4  * Copyright (c) International Business Machines Corp., 2002, 2007
5  * Author(s): Steve French ([email protected])
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;
43 
44 /* Functions related to inodes */
45 extern const struct inode_operations cifs_dir_inode_ops;
46 extern struct inode *cifs_root_iget(struct super_block *);
47 extern int cifs_create(struct inode *, struct dentry *, umode_t,
48  bool excl);
49 extern int cifs_atomic_open(struct inode *, struct dentry *,
50  struct file *, unsigned, umode_t,
51  int *);
52 extern struct dentry *cifs_lookup(struct inode *, struct dentry *,
53  unsigned int);
54 extern int cifs_unlink(struct inode *dir, struct dentry *dentry);
55 extern int cifs_hardlink(struct dentry *, struct inode *, struct dentry *);
56 extern int cifs_mknod(struct inode *, struct dentry *, umode_t, dev_t);
57 extern int cifs_mkdir(struct inode *, struct dentry *, umode_t);
58 extern int cifs_rmdir(struct inode *, struct dentry *);
59 extern int cifs_rename(struct inode *, struct dentry *, struct inode *,
60  struct dentry *);
61 extern int cifs_revalidate_file_attr(struct file *filp);
62 extern int cifs_revalidate_dentry_attr(struct dentry *);
63 extern int cifs_revalidate_file(struct file *filp);
64 extern int cifs_revalidate_dentry(struct dentry *);
65 extern int cifs_invalidate_mapping(struct inode *inode);
66 extern int cifs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
67 extern int cifs_setattr(struct dentry *, struct iattr *);
68 
69 extern const struct inode_operations cifs_file_inode_ops;
70 extern const struct inode_operations cifs_symlink_inode_ops;
72 
73 
74 /* Functions related to files and directories */
75 extern const struct file_operations cifs_file_ops;
76 extern const struct file_operations cifs_file_direct_ops; /* if directio mnt */
77 extern const struct file_operations cifs_file_strict_ops; /* if strictio mnt */
78 extern const struct file_operations cifs_file_nobrl_ops; /* no brlocks */
81 extern int cifs_open(struct inode *inode, struct file *file);
82 extern int cifs_close(struct inode *inode, struct file *file);
83 extern int cifs_closedir(struct inode *inode, struct file *file);
84 extern ssize_t cifs_user_readv(struct kiocb *iocb, const struct iovec *iov,
85  unsigned long nr_segs, loff_t pos);
86 extern ssize_t cifs_strict_readv(struct kiocb *iocb, const struct iovec *iov,
87  unsigned long nr_segs, loff_t pos);
88 extern ssize_t cifs_user_writev(struct kiocb *iocb, const struct iovec *iov,
89  unsigned long nr_segs, loff_t pos);
90 extern ssize_t cifs_strict_writev(struct kiocb *iocb, const struct iovec *iov,
91  unsigned long nr_segs, loff_t pos);
92 extern int cifs_lock(struct file *, int, struct file_lock *);
93 extern int cifs_fsync(struct file *, loff_t, loff_t, int);
94 extern int cifs_strict_fsync(struct file *, loff_t, loff_t, int);
95 extern int cifs_flush(struct file *, fl_owner_t id);
96 extern int cifs_file_mmap(struct file * , struct vm_area_struct *);
97 extern int cifs_file_strict_mmap(struct file * , struct vm_area_struct *);
98 extern const struct file_operations cifs_dir_ops;
99 extern int cifs_dir_open(struct inode *inode, struct file *file);
100 extern int cifs_readdir(struct file *file, void *direntry, filldir_t filldir);
101 
102 /* Functions related to dir entries */
103 extern const struct dentry_operations cifs_dentry_ops;
104 extern const struct dentry_operations cifs_ci_dentry_ops;
105 
106 #ifdef CONFIG_CIFS_DFS_UPCALL
107 extern struct vfsmount *cifs_dfs_d_automount(struct path *path);
108 #else
109 #define cifs_dfs_d_automount NULL
110 #endif
111 
112 /* Functions related to symlinks */
113 extern void *cifs_follow_link(struct dentry *direntry, struct nameidata *nd);
114 extern void cifs_put_link(struct dentry *direntry,
115  struct nameidata *nd, void *);
116 extern int cifs_readlink(struct dentry *direntry, char __user *buffer,
117  int buflen);
118 extern int cifs_symlink(struct inode *inode, struct dentry *direntry,
119  const char *symname);
120 extern int cifs_removexattr(struct dentry *, const char *);
121 extern int cifs_setxattr(struct dentry *, const char *, const void *,
122  size_t, int);
123 extern ssize_t cifs_getxattr(struct dentry *, const char *, void *, size_t);
124 extern ssize_t cifs_listxattr(struct dentry *, char *, size_t);
125 extern long cifs_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
126 
127 #ifdef CONFIG_CIFS_NFSD_EXPORT
128 extern const struct export_operations cifs_export_ops;
129 #endif /* CONFIG_CIFS_NFSD_EXPORT */
130 
131 #define CIFS_VERSION "2.0"
132 #endif /* _CIFSFS_H */