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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 (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 #include <linux/hash.h>
26
27 #define ROOT_I 2
28
29 /*
30 * ino_t is 32-bits on 32-bit arch. We have to squash the 64-bit value down
31 * so that it will fit. We use hash_64 to convert the value to 31 bits, and
32 * then add 1, to ensure that we don't end up with a 0 as the value.
33 */
34 static inline ino_t
35 cifs_uniqueid_to_ino_t(u64 fileid)
36 {
37 if ((sizeof(ino_t)) < (sizeof(u64)))
38 return (ino_t)hash_64(fileid, (sizeof(ino_t) * 8) - 1) + 1;
39
40 return (ino_t)fileid;
41
42 }
43
44 static inline void cifs_set_time(struct dentry *dentry, unsigned long time)
45 {
46 dentry->d_fsdata = (void *) time;
47 }
48
49 static inline unsigned long cifs_get_time(struct dentry *dentry)
50 {
51 return (unsigned long) dentry->d_fsdata;
52 }
53
54 extern struct file_system_type cifs_fs_type;
55 extern const struct address_space_operations cifs_addr_ops;
56 extern const struct address_space_operations cifs_addr_ops_smallbuf;
57
58 /* Functions related to super block operations */
59 extern void cifs_sb_active(struct super_block *sb);
60 extern void cifs_sb_deactive(struct super_block *sb);
61
62 /* Functions related to inodes */
63 extern const struct inode_operations cifs_dir_inode_ops;
64 extern struct inode *cifs_root_iget(struct super_block *);
65 extern int cifs_create(struct inode *, struct dentry *, umode_t,
66 bool excl);
67 extern int cifs_atomic_open(struct inode *, struct dentry *,
68 struct file *, unsigned, umode_t,
69 int *);
70 extern struct dentry *cifs_lookup(struct inode *, struct dentry *,
71 unsigned int);
72 extern int cifs_unlink(struct inode *dir, struct dentry *dentry);
73 extern int cifs_hardlink(struct dentry *, struct inode *, struct dentry *);
74 extern int cifs_mknod(struct inode *, struct dentry *, umode_t, dev_t);
75 extern int cifs_mkdir(struct inode *, struct dentry *, umode_t);
76 extern int cifs_rmdir(struct inode *, struct dentry *);
77 extern int cifs_rename2(struct inode *, struct dentry *, struct inode *,
78 struct dentry *, unsigned int);
79 extern int cifs_revalidate_file_attr(struct file *filp);
80 extern int cifs_revalidate_dentry_attr(struct dentry *);
81 extern int cifs_revalidate_file(struct file *filp);
82 extern int cifs_revalidate_dentry(struct dentry *);
83 extern int cifs_invalidate_mapping(struct inode *inode);
84 extern int cifs_revalidate_mapping(struct inode *inode);
85 extern int cifs_zap_mapping(struct inode *inode);
86 extern int cifs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
87 extern int cifs_setattr(struct dentry *, struct iattr *);
88
89 extern const struct inode_operations cifs_file_inode_ops;
90 extern const struct inode_operations cifs_symlink_inode_ops;
91 extern const struct inode_operations cifs_dfs_referral_inode_operations;
92
93
94 /* Functions related to files and directories */
95 extern const struct file_operations cifs_file_ops;
96 extern const struct file_operations cifs_file_direct_ops; /* if directio mnt */
97 extern const struct file_operations cifs_file_strict_ops; /* if strictio mnt */
98 extern const struct file_operations cifs_file_nobrl_ops; /* no brlocks */
99 extern const struct file_operations cifs_file_direct_nobrl_ops;
100 extern const struct file_operations cifs_file_strict_nobrl_ops;
101 extern int cifs_open(struct inode *inode, struct file *file);
102 extern int cifs_close(struct inode *inode, struct file *file);
103 extern int cifs_closedir(struct inode *inode, struct file *file);
104 extern ssize_t cifs_user_readv(struct kiocb *iocb, struct iov_iter *to);
105 extern ssize_t cifs_strict_readv(struct kiocb *iocb, struct iov_iter *to);
106 extern ssize_t cifs_user_writev(struct kiocb *iocb, struct iov_iter *from);
107 extern ssize_t cifs_strict_writev(struct kiocb *iocb, struct iov_iter *from);
108 extern int cifs_lock(struct file *, int, struct file_lock *);
109 extern int cifs_fsync(struct file *, loff_t, loff_t, int);
110 extern int cifs_strict_fsync(struct file *, loff_t, loff_t, int);
111 extern int cifs_flush(struct file *, fl_owner_t id);
112 extern int cifs_file_mmap(struct file * , struct vm_area_struct *);
113 extern int cifs_file_strict_mmap(struct file * , struct vm_area_struct *);
114 extern const struct file_operations cifs_dir_ops;
115 extern int cifs_dir_open(struct inode *inode, struct file *file);
116 extern int cifs_readdir(struct file *file, struct dir_context *ctx);
117
118 /* Functions related to dir entries */
119 extern const struct dentry_operations cifs_dentry_ops;
120 extern const struct dentry_operations cifs_ci_dentry_ops;
121
122 #ifdef CONFIG_CIFS_DFS_UPCALL
123 extern struct vfsmount *cifs_dfs_d_automount(struct path *path);
124 #else
125 #define cifs_dfs_d_automount NULL
126 #endif
127
128 /* Functions related to symlinks */
129 extern const char *cifs_get_link(struct dentry *, struct inode *,
130 struct delayed_call *);
131 extern int cifs_symlink(struct inode *inode, struct dentry *direntry,
132 const char *symname);
133
134 #ifdef CONFIG_CIFS_XATTR
135 extern const struct xattr_handler *cifs_xattr_handlers[];
136 extern ssize_t cifs_listxattr(struct dentry *, char *, size_t);
137 #else
138 # define cifs_xattr_handlers NULL
139 # define cifs_listxattr NULL
140 #endif
141
142 extern long cifs_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
143 #ifdef CONFIG_CIFS_NFSD_EXPORT
144 extern const struct export_operations cifs_export_ops;
145 #endif /* CONFIG_CIFS_NFSD_EXPORT */
146
147 #define CIFS_VERSION "2.09"
148 #endif /* _CIFSFS_H */