1 #include <linux/reiserfs_xattr.h>
2 #include <linux/init.h>
3 #include <linux/list.h>
4 #include <linux/rwsem.h>
11 int reiserfs_xattr_register_handlers(void) __init;
12 void reiserfs_xattr_unregister_handlers(void);
13 int reiserfs_xattr_init(struct super_block *sb, int mount_flags);
14 int reiserfs_lookup_privroot(struct super_block *sb);
15 int reiserfs_delete_xattrs(struct inode *inode);
16 int reiserfs_chown_xattrs(struct inode *inode, struct iattr *attrs);
17 int reiserfs_permission(struct inode *inode, int mask);
19 #ifdef CONFIG_REISERFS_FS_XATTR
20 #define has_xattr_dir(inode) (REISERFS_I(inode)->i_flags & i_has_xattr_dir)
21 ssize_t reiserfs_getxattr(struct dentry *dentry, const char *name,
22 void *buffer, size_t size);
23 int reiserfs_setxattr(struct dentry *dentry, const char *name,
24 const void *value, size_t size, int flags);
25 ssize_t reiserfs_listxattr(struct dentry *dentry, char *buffer, size_t size);
26 int reiserfs_removexattr(struct dentry *dentry, const char *name);
28 int reiserfs_xattr_get(struct inode *, const char *, void *, size_t);
29 int reiserfs_xattr_set(struct inode *, const char *, const void *, size_t, int);
30 int reiserfs_xattr_set_handle(struct reiserfs_transaction_handle *,
31 struct inode *, const char *, const void *,
34 extern const struct xattr_handler reiserfs_xattr_user_handler;
35 extern const struct xattr_handler reiserfs_xattr_trusted_handler;
36 extern const struct xattr_handler reiserfs_xattr_security_handler;
37 #ifdef CONFIG_REISERFS_FS_SECURITY
38 int reiserfs_security_init(struct inode *dir, struct inode *inode,
39 const struct qstr *qstr,
40 struct reiserfs_security_handle *sec);
41 int reiserfs_security_write(struct reiserfs_transaction_handle *th,
43 struct reiserfs_security_handle *sec);
44 void reiserfs_security_free(struct reiserfs_security_handle *sec);
47 static inline int reiserfs_xattrs_initialized(struct super_block *sb)
49 return REISERFS_SB(sb)->priv_root != NULL;
52 #define xattr_size(size) ((size) + sizeof(struct reiserfs_xattr_header))
53 static inline loff_t reiserfs_xattr_nblocks(struct inode *inode, loff_t size)
56 if (reiserfs_file_data_log(inode)) {
57 ret = _ROUND_UP(xattr_size(size), inode->i_sb->s_blocksize);
58 ret >>= inode->i_sb->s_blocksize_bits;
64 * We may have to create up to 3 objects: xattr root, xattr dir, xattr file.
65 * Let's try to be smart about it.
66 * xattr root: We cache it. If it's not cached, we may need to create it.
67 * xattr dir: If anything has been loaded for this inode, we can set a flag
69 * xattr file: Since we don't cache xattrs, we can't tell. We always include
72 * However, since root and dir can be created between calls - YOU MUST SAVE
75 static inline size_t reiserfs_xattr_jcreate_nblocks(struct inode *inode)
77 size_t nblocks = JOURNAL_BLOCKS_PER_OBJECT(inode->i_sb);
79 if ((REISERFS_I(inode)->i_flags & i_has_xattr_dir) == 0) {
80 nblocks += JOURNAL_BLOCKS_PER_OBJECT(inode->i_sb);
81 if (!REISERFS_SB(inode->i_sb)->xattr_root->d_inode)
82 nblocks += JOURNAL_BLOCKS_PER_OBJECT(inode->i_sb);
88 static inline void reiserfs_init_xattr_rwsem(struct inode *inode)
90 init_rwsem(&REISERFS_I(inode)->i_xattr_sem);
95 #define reiserfs_getxattr NULL
96 #define reiserfs_setxattr NULL
97 #define reiserfs_listxattr NULL
98 #define reiserfs_removexattr NULL
100 static inline void reiserfs_init_xattr_rwsem(struct inode *inode)
103 #endif /* CONFIG_REISERFS_FS_XATTR */
105 #ifndef CONFIG_REISERFS_FS_SECURITY
106 static inline int reiserfs_security_init(struct inode *dir,
108 const struct qstr *qstr,
109 struct reiserfs_security_handle *sec)
114 reiserfs_security_write(struct reiserfs_transaction_handle *th,
116 struct reiserfs_security_handle *sec)
120 static inline void reiserfs_security_free(struct reiserfs_security_handle *sec)