btrfs-util: tweak error code a bit

diff --git a/src/basic/btrfs-util.c b/src/basic/btrfs-util.c
index 775b97b10071732d367eb11c27f45e97f220d4bc..17ee474f7332bdaf0d054623680519dc255fe646 100644 (file)
--- a/src/basic/btrfs-util.c
+++ b/src/basic/btrfs-util.c
@@ -319,7 +319,7 @@ int btrfs_get_block_device_fd(int fd, dev_t *dev) {
                         return -errno;
 
                 if (!S_ISBLK(st.st_mode))
-                        return -ENODEV;
+                        return -ENOTBLK;
 
                 if (major(st.st_rdev) == 0)
                         return -ENODEV;