yaffs: Fix issue with look-up off null names

[yaffs2.git] / yaffs_guts.c

diff --git a/yaffs_guts.c b/yaffs_guts.c
index b67055adef5de24874aaaa1b3121fcb252b84091..9c296e24bcd181440cdb254f3dc3b3602f3730a9 100644 (file)
--- a/yaffs_guts.c
+++ b/yaffs_guts.c
@@ -40,7 +40,8 @@
 static int yaffs_wr_data_obj(struct yaffs_obj *in, int inode_chunk,
                             const u8 *buffer, int n_bytes, int use_reserve);
 
-
+static void yaffs_fix_null_name(struct yaffs_obj *obj, YCHAR *name,
+                               int buffer_size);
 
 /* Function to calculate chunk and offset */
 
@@ -647,15 +648,21 @@ static u16 yaffs_calc_name_sum(const YCHAR *name)
        return sum;
 }
 
+
 void yaffs_set_obj_name(struct yaffs_obj *obj, const YCHAR * name)
 {
        memset(obj->short_name, 0, sizeof(obj->short_name));
-       if (name &&
+
+       if (name && !name[0]) {
+               yaffs_fix_null_name(obj, obj->short_name,
+                               YAFFS_SHORT_NAME_LENGTH);
+               name = obj->short_name;
+       } else if (name &&
                strnlen(name, YAFFS_SHORT_NAME_LENGTH + 1) <=
-               YAFFS_SHORT_NAME_LENGTH)
+               YAFFS_SHORT_NAME_LENGTH)  {
                strcpy(obj->short_name, name);
-       else
-               obj->short_name[0] = _Y('\0');
+       }
+
        obj->sum = yaffs_calc_name_sum(name);
 }