/*
- File: fs/ext3/xattr.h
+ File: fs/ext4/xattr.h
- On-disk format of extended attributes for the ext3 filesystem.
+ On-disk format of extended attributes for the ext4 filesystem.
(C) 2001 Andreas Gruenbacher, <a.gruenbacher@computer.org>
*/
#include <linux/xattr.h>
/* Magic value in attribute blocks */
-#define EXT3_XATTR_MAGIC 0xEA020000
+#define EXT4_XATTR_MAGIC 0xEA020000
/* Maximum number of references to one attribute block */
-#define EXT3_XATTR_REFCOUNT_MAX 1024
+#define EXT4_XATTR_REFCOUNT_MAX 1024
/* Name indexes */
-#define EXT3_XATTR_INDEX_USER 1
-#define EXT3_XATTR_INDEX_POSIX_ACL_ACCESS 2
-#define EXT3_XATTR_INDEX_POSIX_ACL_DEFAULT 3
-#define EXT3_XATTR_INDEX_TRUSTED 4
-#define EXT3_XATTR_INDEX_LUSTRE 5
-#define EXT3_XATTR_INDEX_SECURITY 6
-
-struct ext3_xattr_header {
+#define EXT4_XATTR_INDEX_USER 1
+#define EXT4_XATTR_INDEX_POSIX_ACL_ACCESS 2
+#define EXT4_XATTR_INDEX_POSIX_ACL_DEFAULT 3
+#define EXT4_XATTR_INDEX_TRUSTED 4
+#define EXT4_XATTR_INDEX_LUSTRE 5
+#define EXT4_XATTR_INDEX_SECURITY 6
+
+struct ext4_xattr_header {
__le32 h_magic; /* magic number for identification */
__le32 h_refcount; /* reference count */
__le32 h_blocks; /* number of disk blocks used */
__u32 h_reserved[4]; /* zero right now */
};
-struct ext3_xattr_ibody_header {
+struct ext4_xattr_ibody_header {
__le32 h_magic; /* magic number for identification */
};
-struct ext3_xattr_entry {
+struct ext4_xattr_entry {
__u8 e_name_len; /* length of name */
__u8 e_name_index; /* attribute name index */
__le16 e_value_offs; /* offset in disk block of value */
char e_name[0]; /* attribute name */
};
-#define EXT3_XATTR_PAD_BITS 2
-#define EXT3_XATTR_PAD (1<<EXT3_XATTR_PAD_BITS)
-#define EXT3_XATTR_ROUND (EXT3_XATTR_PAD-1)
-#define EXT3_XATTR_LEN(name_len) \
- (((name_len) + EXT3_XATTR_ROUND + \
- sizeof(struct ext3_xattr_entry)) & ~EXT3_XATTR_ROUND)
-#define EXT3_XATTR_NEXT(entry) \
- ( (struct ext3_xattr_entry *)( \
- (char *)(entry) + EXT3_XATTR_LEN((entry)->e_name_len)) )
-#define EXT3_XATTR_SIZE(size) \
- (((size) + EXT3_XATTR_ROUND) & ~EXT3_XATTR_ROUND)
+#define EXT4_XATTR_PAD_BITS 2
+#define EXT4_XATTR_PAD (1<<EXT4_XATTR_PAD_BITS)
+#define EXT4_XATTR_ROUND (EXT4_XATTR_PAD-1)
+#define EXT4_XATTR_LEN(name_len) \
+ (((name_len) + EXT4_XATTR_ROUND + \
+ sizeof(struct ext4_xattr_entry)) & ~EXT4_XATTR_ROUND)
+#define EXT4_XATTR_NEXT(entry) \
+ ((struct ext4_xattr_entry *)( \
+ (char *)(entry) + EXT4_XATTR_LEN((entry)->e_name_len)))
+#define EXT4_XATTR_SIZE(size) \
+ (((size) + EXT4_XATTR_ROUND) & ~EXT4_XATTR_ROUND)
-# ifdef CONFIG_EXT3_FS_XATTR
+#define IHDR(inode, raw_inode) \
+ ((struct ext4_xattr_ibody_header *) \
+ ((void *)raw_inode + \
+ EXT4_GOOD_OLD_INODE_SIZE + \
+ EXT4_I(inode)->i_extra_isize))
+#define IFIRST(hdr) ((struct ext4_xattr_entry *)((hdr)+1))
-extern struct xattr_handler ext3_xattr_user_handler;
-extern struct xattr_handler ext3_xattr_trusted_handler;
-extern struct xattr_handler ext3_xattr_acl_access_handler;
-extern struct xattr_handler ext3_xattr_acl_default_handler;
-extern struct xattr_handler ext3_xattr_security_handler;
+# ifdef CONFIG_EXT4_FS_XATTR
-extern ssize_t ext3_listxattr(struct dentry *, char *, size_t);
+extern struct xattr_handler ext4_xattr_user_handler;
+extern struct xattr_handler ext4_xattr_trusted_handler;
+extern struct xattr_handler ext4_xattr_acl_access_handler;
+extern struct xattr_handler ext4_xattr_acl_default_handler;
+extern struct xattr_handler ext4_xattr_security_handler;
-extern int ext3_xattr_get(struct inode *, int, const char *, void *, size_t);
-extern int ext3_xattr_list(struct inode *, char *, size_t);
-extern int ext3_xattr_set(struct inode *, int, const char *, const void *, size_t, int);
-extern int ext3_xattr_set_handle(handle_t *, struct inode *, int, const char *, const void *, size_t, int);
+extern ssize_t ext4_listxattr(struct dentry *, char *, size_t);
-extern void ext3_xattr_delete_inode(handle_t *, struct inode *);
-extern void ext3_xattr_put_super(struct super_block *);
+extern int ext4_xattr_get(struct inode *, int, const char *, void *, size_t);
+extern int ext4_xattr_set(struct inode *, int, const char *, const void *, size_t, int);
+extern int ext4_xattr_set_handle(handle_t *, struct inode *, int, const char *, const void *, size_t, int);
-extern int init_ext3_xattr(void);
-extern void exit_ext3_xattr(void);
+extern void ext4_xattr_delete_inode(handle_t *, struct inode *);
+extern void ext4_xattr_put_super(struct super_block *);
-extern struct xattr_handler *ext3_xattr_handlers[];
+extern int ext4_expand_extra_isize_ea(struct inode *inode, int new_extra_isize,
+ struct ext4_inode *raw_inode, handle_t *handle);
-# else /* CONFIG_EXT3_FS_XATTR */
+extern int init_ext4_xattr(void);
+extern void exit_ext4_xattr(void);
-static inline int
-ext3_xattr_get(struct inode *inode, int name_index, const char *name,
- void *buffer, size_t size, int flags)
-{
- return -EOPNOTSUPP;
-}
+extern struct xattr_handler *ext4_xattr_handlers[];
+
+# else /* CONFIG_EXT4_FS_XATTR */
static inline int
-ext3_xattr_list(struct inode *inode, void *buffer, size_t size)
+ext4_xattr_get(struct inode *inode, int name_index, const char *name,
+ void *buffer, size_t size, int flags)
{
return -EOPNOTSUPP;
}
static inline int
-ext3_xattr_set(struct inode *inode, int name_index, const char *name,
+ext4_xattr_set(struct inode *inode, int name_index, const char *name,
const void *value, size_t size, int flags)
{
return -EOPNOTSUPP;
}
static inline int
-ext3_xattr_set_handle(handle_t *handle, struct inode *inode, int name_index,
+ext4_xattr_set_handle(handle_t *handle, struct inode *inode, int name_index,
const char *name, const void *value, size_t size, int flags)
{
return -EOPNOTSUPP;
}
static inline void
-ext3_xattr_delete_inode(handle_t *handle, struct inode *inode)
+ext4_xattr_delete_inode(handle_t *handle, struct inode *inode)
{
}
static inline void
-ext3_xattr_put_super(struct super_block *sb)
+ext4_xattr_put_super(struct super_block *sb)
{
}
static inline int
-init_ext3_xattr(void)
+init_ext4_xattr(void)
{
return 0;
}
static inline void
-exit_ext3_xattr(void)
+exit_ext4_xattr(void)
+{
+}
+
+static inline int
+ext4_expand_extra_isize_ea(struct inode *inode, int new_extra_isize,
+ struct ext4_inode *raw_inode, handle_t *handle)
{
+ return -EOPNOTSUPP;
}
-#define ext3_xattr_handlers NULL
+#define ext4_xattr_handlers NULL
-# endif /* CONFIG_EXT3_FS_XATTR */
+# endif /* CONFIG_EXT4_FS_XATTR */
-#ifdef CONFIG_EXT3_FS_SECURITY
-extern int ext3_init_security(handle_t *handle, struct inode *inode,
+#ifdef CONFIG_EXT4_FS_SECURITY
+extern int ext4_init_security(handle_t *handle, struct inode *inode,
struct inode *dir);
#else
-static inline int ext3_init_security(handle_t *handle, struct inode *inode,
+static inline int ext4_init_security(handle_t *handle, struct inode *inode,
struct inode *dir)
{
return 0;
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