2 File: linux/reiserfs_xattr.h
5 #include <linux/xattr.h>
7 /* Magic value in header */
8 #define REISERFS_XATTR_MAGIC 0x52465841 /* "RFXA" */
10 struct reiserfs_xattr_header {
11 __le32 h_magic; /* magic number for identification */
12 __le32 h_hash; /* hash of the value */
16 #include <linux/init.h>
18 struct reiserfs_xattr_handler {
22 int (*get) (struct inode * inode, const char *name, void *buffer,
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,
29 struct list_head handlers;
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)
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);
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);
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;
56 int reiserfs_xattr_register_handlers(void) __init;
57 void reiserfs_xattr_unregister_handlers(void);
59 static inline void reiserfs_write_lock_xattrs(struct super_block *sb)
61 down_write(&REISERFS_XATTR_DIR_SEM(sb));
63 static inline void reiserfs_write_unlock_xattrs(struct super_block *sb)
65 up_write(&REISERFS_XATTR_DIR_SEM(sb));
67 static inline void reiserfs_read_lock_xattrs(struct super_block *sb)
69 down_read(&REISERFS_XATTR_DIR_SEM(sb));
72 static inline void reiserfs_read_unlock_xattrs(struct super_block *sb)
74 up_read(&REISERFS_XATTR_DIR_SEM(sb));
77 static inline void reiserfs_write_lock_xattr_i(struct inode *inode)
79 down_write(&REISERFS_I(inode)->xattr_sem);
81 static inline void reiserfs_write_unlock_xattr_i(struct inode *inode)
83 up_write(&REISERFS_I(inode)->xattr_sem);
85 static inline void reiserfs_read_lock_xattr_i(struct inode *inode)
87 down_read(&REISERFS_I(inode)->xattr_sem);
90 static inline void reiserfs_read_unlock_xattr_i(struct inode *inode)
92 up_read(&REISERFS_I(inode)->xattr_sem);
95 static inline void reiserfs_mark_inode_private(struct inode *inode)
97 inode->i_flags |= S_PRIVATE;
100 static inline void reiserfs_init_xattr_rwsem(struct inode *inode)
102 init_rwsem(&REISERFS_I(inode)->xattr_sem);
107 #define is_reiserfs_priv_object(inode) 0
108 #define reiserfs_mark_inode_private(inode) do {;} while(0)
109 #define reiserfs_getxattr NULL
110 #define reiserfs_setxattr NULL
111 #define reiserfs_listxattr NULL
112 #define reiserfs_removexattr NULL
113 #define reiserfs_write_lock_xattrs(sb) do {;} while(0)
114 #define reiserfs_write_unlock_xattrs(sb) do {;} while(0)
115 #define reiserfs_read_lock_xattrs(sb)
116 #define reiserfs_read_unlock_xattrs(sb)
118 #define reiserfs_permission NULL
120 #define reiserfs_xattr_register_handlers() 0
121 #define reiserfs_xattr_unregister_handlers()
123 static inline int reiserfs_delete_xattrs(struct inode *inode)
127 static inline int reiserfs_chown_xattrs(struct inode *inode,
132 static inline int reiserfs_xattr_init(struct super_block *sb, int mount_flags)
134 sb->s_flags = (sb->s_flags & ~MS_POSIXACL); /* to be sure */
137 static inline void reiserfs_init_xattr_rwsem(struct inode *inode)
142 #endif /* __KERNEL__ */