]>
Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | File: linux/reiserfs_xattr.h | |
3 | */ | |
4 | ||
1da177e4 LT |
5 | #include <linux/xattr.h> |
6 | ||
7 | /* Magic value in header */ | |
bd4c625c | 8 | #define REISERFS_XATTR_MAGIC 0x52465841 /* "RFXA" */ |
1da177e4 LT |
9 | |
10 | struct reiserfs_xattr_header { | |
bd4c625c LT |
11 | __le32 h_magic; /* magic number for identification */ |
12 | __le32 h_hash; /* hash of the value */ | |
1da177e4 LT |
13 | }; |
14 | ||
15 | #ifdef __KERNEL__ | |
98ca79d5 | 16 | #include <linux/init.h> |
1da177e4 LT |
17 | |
18 | struct reiserfs_xattr_handler { | |
19 | char *prefix; | |
bd4c625c LT |
20 | int (*init) (void); |
21 | void (*exit) (void); | |
22 | int (*get) (struct inode * inode, const char *name, void *buffer, | |
23 | size_t size); | |
24 | int (*set) (struct inode * inode, const char *name, const void *buffer, | |
25 | size_t size, int flags); | |
26 | int (*del) (struct inode * inode, const char *name); | |
27 | int (*list) (struct inode * inode, const char *name, int namelen, | |
28 | char *out); | |
29 | struct list_head handlers; | |
1da177e4 LT |
30 | }; |
31 | ||
1da177e4 LT |
32 | #ifdef CONFIG_REISERFS_FS_XATTR |
33 | #define is_reiserfs_priv_object(inode) IS_PRIVATE(inode) | |
34 | #define has_xattr_dir(inode) (REISERFS_I(inode)->i_flags & i_has_xattr_dir) | |
bd4c625c LT |
35 | ssize_t reiserfs_getxattr(struct dentry *dentry, const char *name, |
36 | void *buffer, size_t size); | |
37 | int reiserfs_setxattr(struct dentry *dentry, const char *name, | |
38 | const void *value, size_t size, int flags); | |
39 | ssize_t reiserfs_listxattr(struct dentry *dentry, char *buffer, size_t size); | |
40 | int reiserfs_removexattr(struct dentry *dentry, const char *name); | |
41 | int reiserfs_delete_xattrs(struct inode *inode); | |
42 | int reiserfs_chown_xattrs(struct inode *inode, struct iattr *attrs); | |
43 | int reiserfs_xattr_init(struct super_block *sb, int mount_flags); | |
44 | int reiserfs_permission(struct inode *inode, int mask, struct nameidata *nd); | |
bd4c625c LT |
45 | |
46 | int reiserfs_xattr_del(struct inode *, const char *); | |
47 | int reiserfs_xattr_get(const struct inode *, const char *, void *, size_t); | |
48 | int reiserfs_xattr_set(struct inode *, const char *, const void *, size_t, int); | |
1da177e4 LT |
49 | |
50 | extern struct reiserfs_xattr_handler user_handler; | |
51 | extern struct reiserfs_xattr_handler trusted_handler; | |
52 | #ifdef CONFIG_REISERFS_FS_SECURITY | |
53 | extern struct reiserfs_xattr_handler security_handler; | |
54 | #endif | |
55 | ||
bd4c625c LT |
56 | int reiserfs_xattr_register_handlers(void) __init; |
57 | void reiserfs_xattr_unregister_handlers(void); | |
1da177e4 | 58 | |
bd4c625c | 59 | static inline void reiserfs_write_lock_xattrs(struct super_block *sb) |
1da177e4 | 60 | { |
bd4c625c | 61 | down_write(&REISERFS_XATTR_DIR_SEM(sb)); |
1da177e4 | 62 | } |
bd4c625c | 63 | static inline void reiserfs_write_unlock_xattrs(struct super_block *sb) |
1da177e4 | 64 | { |
bd4c625c | 65 | up_write(&REISERFS_XATTR_DIR_SEM(sb)); |
1da177e4 | 66 | } |
bd4c625c | 67 | static inline void reiserfs_read_lock_xattrs(struct super_block *sb) |
1da177e4 | 68 | { |
bd4c625c | 69 | down_read(&REISERFS_XATTR_DIR_SEM(sb)); |
1da177e4 LT |
70 | } |
71 | ||
bd4c625c | 72 | static inline void reiserfs_read_unlock_xattrs(struct super_block *sb) |
1da177e4 | 73 | { |
bd4c625c | 74 | up_read(&REISERFS_XATTR_DIR_SEM(sb)); |
1da177e4 LT |
75 | } |
76 | ||
bd4c625c | 77 | static inline void reiserfs_write_lock_xattr_i(struct inode *inode) |
1da177e4 | 78 | { |
bd4c625c | 79 | down_write(&REISERFS_I(inode)->xattr_sem); |
1da177e4 | 80 | } |
bd4c625c | 81 | static inline void reiserfs_write_unlock_xattr_i(struct inode *inode) |
1da177e4 | 82 | { |
bd4c625c | 83 | up_write(&REISERFS_I(inode)->xattr_sem); |
1da177e4 | 84 | } |
bd4c625c | 85 | static inline void reiserfs_read_lock_xattr_i(struct inode *inode) |
1da177e4 | 86 | { |
bd4c625c | 87 | down_read(&REISERFS_I(inode)->xattr_sem); |
1da177e4 LT |
88 | } |
89 | ||
bd4c625c | 90 | static inline void reiserfs_read_unlock_xattr_i(struct inode *inode) |
1da177e4 | 91 | { |
bd4c625c | 92 | up_read(&REISERFS_I(inode)->xattr_sem); |
1da177e4 LT |
93 | } |
94 | ||
bd4c625c | 95 | static inline void reiserfs_mark_inode_private(struct inode *inode) |
1da177e4 | 96 | { |
bd4c625c | 97 | inode->i_flags |= S_PRIVATE; |
1da177e4 LT |
98 | } |
99 | ||
100 | #else | |
101 | ||
102 | #define is_reiserfs_priv_object(inode) 0 | |
cd02b966 | 103 | #define reiserfs_mark_inode_private(inode) do {;} while(0) |
1da177e4 LT |
104 | #define reiserfs_getxattr NULL |
105 | #define reiserfs_setxattr NULL | |
106 | #define reiserfs_listxattr NULL | |
107 | #define reiserfs_removexattr NULL | |
cd02b966 VS |
108 | #define reiserfs_write_lock_xattrs(sb) do {;} while(0) |
109 | #define reiserfs_write_unlock_xattrs(sb) do {;} while(0) | |
1da177e4 LT |
110 | #define reiserfs_read_lock_xattrs(sb) |
111 | #define reiserfs_read_unlock_xattrs(sb) | |
112 | ||
113 | #define reiserfs_permission NULL | |
114 | ||
115 | #define reiserfs_xattr_register_handlers() 0 | |
116 | #define reiserfs_xattr_unregister_handlers() | |
117 | ||
bd4c625c LT |
118 | static inline int reiserfs_delete_xattrs(struct inode *inode) |
119 | { | |
120 | return 0; | |
121 | }; | |
122 | static inline int reiserfs_chown_xattrs(struct inode *inode, | |
123 | struct iattr *attrs) | |
124 | { | |
125 | return 0; | |
126 | }; | |
127 | static inline int reiserfs_xattr_init(struct super_block *sb, int mount_flags) | |
1da177e4 | 128 | { |
bd4c625c LT |
129 | sb->s_flags = (sb->s_flags & ~MS_POSIXACL); /* to be sure */ |
130 | return 0; | |
1da177e4 LT |
131 | }; |
132 | #endif | |
133 | ||
bd4c625c | 134 | #endif /* __KERNEL__ */ |