1 files changed, 5 insertions, 0 deletions

diff --git a/fs/hfs/hfs.h b/fs/hfs/hfs.h
index 1445e3a56ed4..c6aae61adfe6 100644
--- a/fs/hfs/hfs.h
+++ b/fs/hfs/hfs.h
@@ -28,6 +28,8 @@
 #define HFS_MAX_NAMELEN         128
 #define HFS_MAX_VALENCE         32767U
 
+#define HFS_BAD_KEYLEN          0xFF
+
 /* Meanings of the drAtrb field of the MDB,
  * Reference: _Inside Macintosh: Files_ p. 2-61
  */
@@ -167,6 +169,9 @@ typedef union hfs_btree_key {
         struct hfs_ext_key ext;
 } hfs_btree_key;
 
+#define HFS_MAX_CAT_KEYLEN      (sizeof(struct hfs_cat_key) - sizeof(u8))
+#define HFS_MAX_EXT_KEYLEN      (sizeof(struct hfs_ext_key) - sizeof(u8))
+
 typedef union hfs_btree_key btree_key;
 
 struct hfs_extent {