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23#ifndef FS_9P_V9FS_H
24#define FS_9P_V9FS_H
25
26#include <linux/backing-dev.h>
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41#define V9FS_ACCESS_ANY (V9FS_ACCESS_SINGLE | \
42 V9FS_ACCESS_USER | \
43 V9FS_ACCESS_CLIENT)
44#define V9FS_ACCESS_MASK V9FS_ACCESS_ANY
45#define V9FS_ACL_MASK V9FS_POSIX_ACL
46
47enum p9_session_flags {
48 V9FS_PROTO_2000U = 0x01,
49 V9FS_PROTO_2000L = 0x02,
50 V9FS_ACCESS_SINGLE = 0x04,
51 V9FS_ACCESS_USER = 0x08,
52 V9FS_ACCESS_CLIENT = 0x10,
53 V9FS_POSIX_ACL = 0x20
54};
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64
65enum p9_cache_modes {
66 CACHE_NONE,
67 CACHE_MMAP,
68 CACHE_LOOSE,
69 CACHE_FSCACHE,
70};
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97struct v9fs_session_info {
98
99 unsigned char flags;
100 unsigned char nodev;
101 unsigned short debug;
102 unsigned int afid;
103 unsigned int cache;
104#ifdef CONFIG_9P_FSCACHE
105 char *cachetag;
106 struct fscache_cookie *fscache;
107#endif
108
109 char *uname;
110 char *aname;
111 unsigned int maxdata;
112 kuid_t dfltuid;
113 kgid_t dfltgid;
114 kuid_t uid;
115 struct p9_client *clnt;
116 struct list_head slist;
117 struct backing_dev_info bdi;
118 struct rw_semaphore rename_sem;
119};
120
121
122#define V9FS_INO_INVALID_ATTR 0x01
123
124struct v9fs_inode {
125#ifdef CONFIG_9P_FSCACHE
126 struct mutex fscache_lock;
127 struct fscache_cookie *fscache;
128#endif
129 struct p9_qid qid;
130 unsigned int cache_validity;
131 struct p9_fid *writeback_fid;
132 struct mutex v_mutex;
133 struct inode vfs_inode;
134};
135
136static inline struct v9fs_inode *V9FS_I(const struct inode *inode)
137{
138 return container_of(inode, struct v9fs_inode, vfs_inode);
139}
140
141struct p9_fid *v9fs_session_init(struct v9fs_session_info *, const char *,
142 char *);
143extern void v9fs_session_close(struct v9fs_session_info *v9ses);
144extern void v9fs_session_cancel(struct v9fs_session_info *v9ses);
145extern void v9fs_session_begin_cancel(struct v9fs_session_info *v9ses);
146extern struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry,
147 unsigned int flags);
148extern int v9fs_vfs_unlink(struct inode *i, struct dentry *d);
149extern int v9fs_vfs_rmdir(struct inode *i, struct dentry *d);
150extern int v9fs_vfs_rename(struct inode *old_dir, struct dentry *old_dentry,
151 struct inode *new_dir, struct dentry *new_dentry);
152extern struct inode *v9fs_inode_from_fid(struct v9fs_session_info *v9ses,
153 struct p9_fid *fid,
154 struct super_block *sb, int new);
155extern const struct inode_operations v9fs_dir_inode_operations_dotl;
156extern const struct inode_operations v9fs_file_inode_operations_dotl;
157extern const struct inode_operations v9fs_symlink_inode_operations_dotl;
158extern struct inode *v9fs_inode_from_fid_dotl(struct v9fs_session_info *v9ses,
159 struct p9_fid *fid,
160 struct super_block *sb, int new);
161
162
163#define V9FS_PORT 564
164#define V9FS_DEFUSER "nobody"
165#define V9FS_DEFANAME ""
166#define V9FS_DEFUID KUIDT_INIT(-2)
167#define V9FS_DEFGID KGIDT_INIT(-2)
168
169static inline struct v9fs_session_info *v9fs_inode2v9ses(struct inode *inode)
170{
171 return (inode->i_sb->s_fs_info);
172}
173
174static inline struct v9fs_session_info *v9fs_dentry2v9ses(struct dentry *dentry)
175{
176 return dentry->d_sb->s_fs_info;
177}
178
179static inline int v9fs_proto_dotu(struct v9fs_session_info *v9ses)
180{
181 return v9ses->flags & V9FS_PROTO_2000U;
182}
183
184static inline int v9fs_proto_dotl(struct v9fs_session_info *v9ses)
185{
186 return v9ses->flags & V9FS_PROTO_2000L;
187}
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197static inline struct inode *
198v9fs_get_inode_from_fid(struct v9fs_session_info *v9ses, struct p9_fid *fid,
199 struct super_block *sb)
200{
201 if (v9fs_proto_dotl(v9ses))
202 return v9fs_inode_from_fid_dotl(v9ses, fid, sb, 0);
203 else
204 return v9fs_inode_from_fid(v9ses, fid, sb, 0);
205}
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215static inline struct inode *
216v9fs_get_new_inode_from_fid(struct v9fs_session_info *v9ses, struct p9_fid *fid,
217 struct super_block *sb)
218{
219 if (v9fs_proto_dotl(v9ses))
220 return v9fs_inode_from_fid_dotl(v9ses, fid, sb, 1);
221 else
222 return v9fs_inode_from_fid(v9ses, fid, sb, 1);
223}
224
225#endif
226