2 File: linux/reiserfs_xattr.h
5 #include <linux/config.h>
6 #include <linux/init.h>
7 #include <linux/xattr.h>
9 /* Magic value in header */
10 #define REISERFS_XATTR_MAGIC 0x52465841 /* "RFXA" */
12 struct reiserfs_xattr_header {
13 __le32 h_magic; /* magic number for identification */
14 __le32 h_hash; /* hash of the value */
19 struct reiserfs_xattr_handler {
23 int (*get) (struct inode * inode, const char *name, void *buffer,
25 int (*set) (struct inode * inode, const char *name, const void *buffer,
26 size_t size, int flags);
27 int (*del) (struct inode * inode, const char *name);
28 int (*list) (struct inode * inode, const char *name, int namelen,
30 struct list_head handlers;
33 #ifdef CONFIG_REISERFS_FS_XATTR
34 #define is_reiserfs_priv_object(inode) IS_PRIVATE(inode)
35 #define has_xattr_dir(inode) (REISERFS_I(inode)->i_flags & i_has_xattr_dir)
36 ssize_t reiserfs_getxattr(struct dentry *dentry, const char *name,
37 void *buffer, size_t size);
38 int reiserfs_setxattr(struct dentry *dentry, const char *name,
39 const void *value, size_t size, int flags);
40 ssize_t reiserfs_listxattr(struct dentry *dentry, char *buffer, size_t size);
41 int reiserfs_removexattr(struct dentry *dentry, const char *name);
42 int reiserfs_delete_xattrs(struct inode *inode);
43 int reiserfs_chown_xattrs(struct inode *inode, struct iattr *attrs);
44 int reiserfs_xattr_init(struct super_block *sb, int mount_flags);
45 int reiserfs_permission(struct inode *inode, int mask, struct nameidata *nd);
47 int reiserfs_xattr_del(struct inode *, const char *);
48 int reiserfs_xattr_get(const struct inode *, const char *, void *, size_t);
49 int reiserfs_xattr_set(struct inode *, const char *, const void *, size_t, int);
51 extern struct reiserfs_xattr_handler user_handler;
52 extern struct reiserfs_xattr_handler trusted_handler;
53 #ifdef CONFIG_REISERFS_FS_SECURITY
54 extern struct reiserfs_xattr_handler security_handler;
57 int reiserfs_xattr_register_handlers(void) __init;
58 void reiserfs_xattr_unregister_handlers(void);
60 static inline void reiserfs_write_lock_xattrs(struct super_block *sb)
62 down_write(&REISERFS_XATTR_DIR_SEM(sb));
64 static inline void reiserfs_write_unlock_xattrs(struct super_block *sb)
66 up_write(&REISERFS_XATTR_DIR_SEM(sb));
68 static inline void reiserfs_read_lock_xattrs(struct super_block *sb)
70 down_read(&REISERFS_XATTR_DIR_SEM(sb));
73 static inline void reiserfs_read_unlock_xattrs(struct super_block *sb)
75 up_read(&REISERFS_XATTR_DIR_SEM(sb));
78 static inline void reiserfs_write_lock_xattr_i(struct inode *inode)
80 down_write(&REISERFS_I(inode)->xattr_sem);
82 static inline void reiserfs_write_unlock_xattr_i(struct inode *inode)
84 up_write(&REISERFS_I(inode)->xattr_sem);
86 static inline void reiserfs_read_lock_xattr_i(struct inode *inode)
88 down_read(&REISERFS_I(inode)->xattr_sem);
91 static inline void reiserfs_read_unlock_xattr_i(struct inode *inode)
93 up_read(&REISERFS_I(inode)->xattr_sem);
96 static inline void reiserfs_mark_inode_private(struct inode *inode)
98 inode->i_flags |= S_PRIVATE;
103 #define is_reiserfs_priv_object(inode) 0
104 #define reiserfs_mark_inode_private(inode) do {;} while(0)
105 #define reiserfs_getxattr NULL
106 #define reiserfs_setxattr NULL
107 #define reiserfs_listxattr NULL
108 #define reiserfs_removexattr NULL
109 #define reiserfs_write_lock_xattrs(sb) do {;} while(0)
110 #define reiserfs_write_unlock_xattrs(sb) do {;} while(0)
111 #define reiserfs_read_lock_xattrs(sb)
112 #define reiserfs_read_unlock_xattrs(sb)
114 #define reiserfs_permission NULL
116 #define reiserfs_xattr_register_handlers() 0
117 #define reiserfs_xattr_unregister_handlers()
119 static inline int reiserfs_delete_xattrs(struct inode *inode)
123 static inline int reiserfs_chown_xattrs(struct inode *inode,
128 static inline int reiserfs_xattr_init(struct super_block *sb, int mount_flags)
130 sb->s_flags = (sb->s_flags & ~MS_POSIXACL); /* to be sure */
135 #endif /* __KERNEL__ */