Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | File: linux/reiserfs_xattr.h | |
3 | */ | |
4 | ||
521dae19 AB |
5 | #ifndef _LINUX_REISERFS_XATTR_H |
6 | #define _LINUX_REISERFS_XATTR_H | |
7 | ||
8 | #include <linux/types.h> | |
1da177e4 LT |
9 | |
10 | /* Magic value in header */ | |
bd4c625c | 11 | #define REISERFS_XATTR_MAGIC 0x52465841 /* "RFXA" */ |
1da177e4 LT |
12 | |
13 | struct reiserfs_xattr_header { | |
bd4c625c LT |
14 | __le32 h_magic; /* magic number for identification */ |
15 | __le32 h_hash; /* hash of the value */ | |
1da177e4 LT |
16 | }; |
17 | ||
18 | #ifdef __KERNEL__ | |
521dae19 | 19 | |
98ca79d5 | 20 | #include <linux/init.h> |
521dae19 AB |
21 | #include <linux/list.h> |
22 | #include <linux/rwsem.h> | |
23 | #include <linux/reiserfs_fs_i.h> | |
24 | #include <linux/reiserfs_fs.h> | |
25 | ||
26 | struct inode; | |
27 | struct dentry; | |
28 | struct iattr; | |
29 | struct super_block; | |
30 | struct nameidata; | |
1da177e4 LT |
31 | |
32 | struct reiserfs_xattr_handler { | |
33 | char *prefix; | |
bd4c625c LT |
34 | int (*init) (void); |
35 | void (*exit) (void); | |
36 | int (*get) (struct inode * inode, const char *name, void *buffer, | |
37 | size_t size); | |
38 | int (*set) (struct inode * inode, const char *name, const void *buffer, | |
39 | size_t size, int flags); | |
40 | int (*del) (struct inode * inode, const char *name); | |
41 | int (*list) (struct inode * inode, const char *name, int namelen, | |
42 | char *out); | |
43 | struct list_head handlers; | |
1da177e4 LT |
44 | }; |
45 | ||
1da177e4 LT |
46 | #ifdef CONFIG_REISERFS_FS_XATTR |
47 | #define is_reiserfs_priv_object(inode) IS_PRIVATE(inode) | |
48 | #define has_xattr_dir(inode) (REISERFS_I(inode)->i_flags & i_has_xattr_dir) | |
bd4c625c LT |
49 | ssize_t reiserfs_getxattr(struct dentry *dentry, const char *name, |
50 | void *buffer, size_t size); | |
51 | int reiserfs_setxattr(struct dentry *dentry, const char *name, | |
52 | const void *value, size_t size, int flags); | |
53 | ssize_t reiserfs_listxattr(struct dentry *dentry, char *buffer, size_t size); | |
54 | int reiserfs_removexattr(struct dentry *dentry, const char *name); | |
55 | int reiserfs_delete_xattrs(struct inode *inode); | |
56 | int reiserfs_chown_xattrs(struct inode *inode, struct iattr *attrs); | |
57 | int reiserfs_xattr_init(struct super_block *sb, int mount_flags); | |
e6305c43 | 58 | int reiserfs_permission(struct inode *inode, int mask); |
bd4c625c LT |
59 | |
60 | int reiserfs_xattr_del(struct inode *, const char *); | |
61 | int reiserfs_xattr_get(const struct inode *, const char *, void *, size_t); | |
62 | int reiserfs_xattr_set(struct inode *, const char *, const void *, size_t, int); | |
1da177e4 LT |
63 | |
64 | extern struct reiserfs_xattr_handler user_handler; | |
65 | extern struct reiserfs_xattr_handler trusted_handler; | |
1da177e4 | 66 | extern struct reiserfs_xattr_handler security_handler; |
1da177e4 | 67 | |
bd4c625c LT |
68 | int reiserfs_xattr_register_handlers(void) __init; |
69 | void reiserfs_xattr_unregister_handlers(void); | |
1da177e4 | 70 | |
bd4c625c | 71 | static inline void reiserfs_write_lock_xattrs(struct super_block *sb) |
1da177e4 | 72 | { |
bd4c625c | 73 | down_write(&REISERFS_XATTR_DIR_SEM(sb)); |
1da177e4 | 74 | } |
bd4c625c | 75 | static inline void reiserfs_write_unlock_xattrs(struct super_block *sb) |
1da177e4 | 76 | { |
bd4c625c | 77 | up_write(&REISERFS_XATTR_DIR_SEM(sb)); |
1da177e4 | 78 | } |
bd4c625c | 79 | static inline void reiserfs_read_lock_xattrs(struct super_block *sb) |
1da177e4 | 80 | { |
bd4c625c | 81 | down_read(&REISERFS_XATTR_DIR_SEM(sb)); |
1da177e4 LT |
82 | } |
83 | ||
bd4c625c | 84 | static inline void reiserfs_read_unlock_xattrs(struct super_block *sb) |
1da177e4 | 85 | { |
bd4c625c | 86 | up_read(&REISERFS_XATTR_DIR_SEM(sb)); |
1da177e4 LT |
87 | } |
88 | ||
bd4c625c | 89 | static inline void reiserfs_write_lock_xattr_i(struct inode *inode) |
1da177e4 | 90 | { |
bd4c625c | 91 | down_write(&REISERFS_I(inode)->xattr_sem); |
1da177e4 | 92 | } |
bd4c625c | 93 | static inline void reiserfs_write_unlock_xattr_i(struct inode *inode) |
1da177e4 | 94 | { |
bd4c625c | 95 | up_write(&REISERFS_I(inode)->xattr_sem); |
1da177e4 | 96 | } |
bd4c625c | 97 | static inline void reiserfs_read_lock_xattr_i(struct inode *inode) |
1da177e4 | 98 | { |
bd4c625c | 99 | down_read(&REISERFS_I(inode)->xattr_sem); |
1da177e4 LT |
100 | } |
101 | ||
bd4c625c | 102 | static inline void reiserfs_read_unlock_xattr_i(struct inode *inode) |
1da177e4 | 103 | { |
bd4c625c | 104 | up_read(&REISERFS_I(inode)->xattr_sem); |
1da177e4 LT |
105 | } |
106 | ||
bd4c625c | 107 | static inline void reiserfs_mark_inode_private(struct inode *inode) |
1da177e4 | 108 | { |
bd4c625c | 109 | inode->i_flags |= S_PRIVATE; |
1da177e4 LT |
110 | } |
111 | ||
068fbb31 AD |
112 | static inline void reiserfs_init_xattr_rwsem(struct inode *inode) |
113 | { | |
114 | init_rwsem(&REISERFS_I(inode)->xattr_sem); | |
115 | } | |
116 | ||
1da177e4 LT |
117 | #else |
118 | ||
119 | #define is_reiserfs_priv_object(inode) 0 | |
cd02b966 | 120 | #define reiserfs_mark_inode_private(inode) do {;} while(0) |
1da177e4 LT |
121 | #define reiserfs_getxattr NULL |
122 | #define reiserfs_setxattr NULL | |
123 | #define reiserfs_listxattr NULL | |
124 | #define reiserfs_removexattr NULL | |
cd02b966 VS |
125 | #define reiserfs_write_lock_xattrs(sb) do {;} while(0) |
126 | #define reiserfs_write_unlock_xattrs(sb) do {;} while(0) | |
1da177e4 LT |
127 | #define reiserfs_read_lock_xattrs(sb) |
128 | #define reiserfs_read_unlock_xattrs(sb) | |
129 | ||
130 | #define reiserfs_permission NULL | |
131 | ||
132 | #define reiserfs_xattr_register_handlers() 0 | |
133 | #define reiserfs_xattr_unregister_handlers() | |
134 | ||
bd4c625c LT |
135 | static inline int reiserfs_delete_xattrs(struct inode *inode) |
136 | { | |
137 | return 0; | |
138 | }; | |
139 | static inline int reiserfs_chown_xattrs(struct inode *inode, | |
140 | struct iattr *attrs) | |
141 | { | |
142 | return 0; | |
143 | }; | |
144 | static inline int reiserfs_xattr_init(struct super_block *sb, int mount_flags) | |
1da177e4 | 145 | { |
bd4c625c LT |
146 | sb->s_flags = (sb->s_flags & ~MS_POSIXACL); /* to be sure */ |
147 | return 0; | |
1da177e4 | 148 | }; |
068fbb31 AD |
149 | static inline void reiserfs_init_xattr_rwsem(struct inode *inode) |
150 | { | |
151 | } | |
521dae19 AB |
152 | #endif /* CONFIG_REISERFS_FS_XATTR */ |
153 | ||
154 | #endif /* __KERNEL__ */ | |
1da177e4 | 155 | |
521dae19 | 156 | #endif /* _LINUX_REISERFS_XATTR_H */ |