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
cifs_uniqueid_to_ino_t(u64 fileid)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
cifs_set_time(struct dentry * dentry,unsigned long time)44 static inline void cifs_set_time(struct dentry *dentry, unsigned long time)
45 {
46 dentry->d_fsdata = (void *) time;
47 }
48
cifs_get_time(struct dentry * dentry)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, smb3_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 extern struct dentry *cifs_lookup(struct inode *, struct dentry *,
70 unsigned int);
71 extern int cifs_unlink(struct inode *dir, struct dentry *dentry);
72 extern int cifs_hardlink(struct dentry *, struct inode *, struct dentry *);
73 extern int cifs_mknod(struct inode *, struct dentry *, umode_t, dev_t);
74 extern int cifs_mkdir(struct inode *, struct dentry *, umode_t);
75 extern int cifs_rmdir(struct inode *, struct dentry *);
76 extern int cifs_rename2(struct inode *, struct dentry *, struct inode *,
77 struct dentry *, unsigned int);
78 extern int cifs_revalidate_file_attr(struct file *filp);
79 extern int cifs_revalidate_dentry_attr(struct dentry *);
80 extern int cifs_revalidate_file(struct file *filp);
81 extern int cifs_revalidate_dentry(struct dentry *);
82 extern int cifs_invalidate_mapping(struct inode *inode);
83 extern int cifs_revalidate_mapping(struct inode *inode);
84 extern int cifs_zap_mapping(struct inode *inode);
85 extern int cifs_getattr(const struct path *, struct kstat *, u32, unsigned int);
86 extern int cifs_setattr(struct dentry *, struct iattr *);
87 extern int cifs_fiemap(struct inode *, struct fiemap_extent_info *, u64 start,
88 u64 len);
89
90 extern const struct inode_operations cifs_file_inode_ops;
91 extern const struct inode_operations cifs_symlink_inode_ops;
92 extern const struct inode_operations cifs_dfs_referral_inode_operations;
93
94
95 /* Functions related to files and directories */
96 extern const struct file_operations cifs_file_ops;
97 extern const struct file_operations cifs_file_direct_ops; /* if directio mnt */
98 extern const struct file_operations cifs_file_strict_ops; /* if strictio mnt */
99 extern const struct file_operations cifs_file_nobrl_ops; /* no brlocks */
100 extern const struct file_operations cifs_file_direct_nobrl_ops;
101 extern const struct file_operations cifs_file_strict_nobrl_ops;
102 extern int cifs_open(struct inode *inode, struct file *file);
103 extern int cifs_close(struct inode *inode, struct file *file);
104 extern int cifs_closedir(struct inode *inode, struct file *file);
105 extern ssize_t cifs_user_readv(struct kiocb *iocb, struct iov_iter *to);
106 extern ssize_t cifs_direct_readv(struct kiocb *iocb, struct iov_iter *to);
107 extern ssize_t cifs_strict_readv(struct kiocb *iocb, struct iov_iter *to);
108 extern ssize_t cifs_user_writev(struct kiocb *iocb, struct iov_iter *from);
109 extern ssize_t cifs_direct_writev(struct kiocb *iocb, struct iov_iter *from);
110 extern ssize_t cifs_strict_writev(struct kiocb *iocb, struct iov_iter *from);
111 extern int cifs_flock(struct file *pfile, int cmd, struct file_lock *plock);
112 extern int cifs_lock(struct file *, int, struct file_lock *);
113 extern int cifs_fsync(struct file *, loff_t, loff_t, int);
114 extern int cifs_strict_fsync(struct file *, loff_t, loff_t, int);
115 extern int cifs_flush(struct file *, fl_owner_t id);
116 extern int cifs_file_mmap(struct file * , struct vm_area_struct *);
117 extern int cifs_file_strict_mmap(struct file * , struct vm_area_struct *);
118 extern const struct file_operations cifs_dir_ops;
119 extern int cifs_dir_open(struct inode *inode, struct file *file);
120 extern int cifs_readdir(struct file *file, struct dir_context *ctx);
121
122 /* Functions related to dir entries */
123 extern const struct dentry_operations cifs_dentry_ops;
124 extern const struct dentry_operations cifs_ci_dentry_ops;
125
126 #ifdef CONFIG_CIFS_DFS_UPCALL
127 extern struct vfsmount *cifs_dfs_d_automount(struct path *path);
128 #else
cifs_dfs_d_automount(struct path * path)129 static inline struct vfsmount *cifs_dfs_d_automount(struct path *path)
130 {
131 return ERR_PTR(-EREMOTE);
132 }
133 #endif
134
135 /* Functions related to symlinks */
136 extern const char *cifs_get_link(struct dentry *, struct inode *,
137 struct delayed_call *);
138 extern int cifs_symlink(struct inode *inode, struct dentry *direntry,
139 const char *symname);
140
141 #ifdef CONFIG_CIFS_XATTR
142 extern const struct xattr_handler *cifs_xattr_handlers[];
143 extern ssize_t cifs_listxattr(struct dentry *, char *, size_t);
144 #else
145 # define cifs_xattr_handlers NULL
146 # define cifs_listxattr NULL
147 #endif
148
149 extern ssize_t cifs_file_copychunk_range(unsigned int xid,
150 struct file *src_file, loff_t off,
151 struct file *dst_file, loff_t destoff,
152 size_t len, unsigned int flags);
153
154 extern long cifs_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
155 extern void cifs_setsize(struct inode *inode, loff_t offset);
156 extern int cifs_truncate_page(struct address_space *mapping, loff_t from);
157
158 #ifdef CONFIG_CIFS_NFSD_EXPORT
159 extern const struct export_operations cifs_export_ops;
160 #endif /* CONFIG_CIFS_NFSD_EXPORT */
161
162 #define CIFS_VERSION "2.29"
163 #endif /* _CIFSFS_H */
164