1 files changed, 58 insertions, 0 deletions

diff --git a/fs/ext4/xattr.h b/fs/ext4/xattr.h
index 91f31ca7d9a..40ca7a6f5ee 100644
--- a/fs/ext4/xattr.h
+++ b/fs/ext4/xattr.h
@@ -65,6 +65,32 @@ struct ext4_xattr_entry {
                 EXT4_I(inode)->i_extra_isize))
 #define IFIRST(hdr) ((struct ext4_xattr_entry *)((hdr)+1))
 
+#define BHDR(bh) ((struct ext4_xattr_header *)((bh)->b_data))
+#define ENTRY(ptr) ((struct ext4_xattr_entry *)(ptr))
+#define BFIRST(bh) ENTRY(BHDR(bh)+1)
+#define IS_LAST_ENTRY(entry) (*(__u32 *)(entry) == 0)
+
+
+struct ext4_xattr_info {
+        int name_index;
+        const char *name;
+        const void *value;
+        size_t value_len;
+};
+
+struct ext4_xattr_search {
+        struct ext4_xattr_entry *first;
+        void *base;
+        void *end;
+        struct ext4_xattr_entry *here;
+        int not_found;
+};
+
+struct ext4_xattr_ibody_find {
+        struct ext4_xattr_search s;
+        struct ext4_iloc iloc;
+};
+
 # ifdef CONFIG_EXT4_FS_XATTR
 
 extern const struct xattr_handler ext4_xattr_user_handler;
@@ -90,6 +116,15 @@ extern void ext4_exit_xattr(void);
 
 extern const struct xattr_handler *ext4_xattr_handlers[];
 
+extern int ext4_xattr_ibody_find(struct inode *inode, struct ext4_xattr_info *i,
+                                 struct ext4_xattr_ibody_find *is);
+extern int ext4_xattr_ibody_get(struct inode *inode, int name_index,
+                                const char *name,
+                                void *buffer, size_t buffer_size);
+extern int ext4_xattr_ibody_set(handle_t *handle, struct inode *inode,
+                                struct ext4_xattr_info *i,
+                                struct ext4_xattr_ibody_find *is);
+
 # else  /* CONFIG_EXT4_FS_XATTR */
 
 static inline int
@@ -143,6 +178,29 @@ ext4_expand_extra_isize_ea(struct inode *inode, int new_extra_isize,
 
 #define ext4_xattr_handlers     NULL
 
+static inline int
+ext4_xattr_ibody_find(struct inode *inode, struct ext4_xattr_info *i,
+                      struct ext4_xattr_ibody_find *is)
+{
+        return -EOPNOTSUPP;
+}
+
+static inline int
+ext4_xattr_ibody_set(handle_t *handle, struct inode *inode,
+                     struct ext4_xattr_info *i,
+                     struct ext4_xattr_ibody_find *is)
+{
+        return -EOPNOTSUPP;
+}
+
+static inline int
+ext4_xattr_ibody_get(struct inode *inode, int name_index,
+                     const char *name,
+                     void *buffer, size_t buffer_size)
+{
+        return -EOPNOTSUPP;
+}
+
 # endif  /* CONFIG_EXT4_FS_XATTR */
 
 #ifdef CONFIG_EXT4_FS_SECURITY