libblkid-tiny: fix wrong btrfs label length

Btrfs label length is 256 included the termination char ( '\0' ) as the real max length is 255 (less than 256 from the wiki).

Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>

diff --git a/libblkid-tiny/btrfs.c b/libblkid-tiny/btrfs.c
index 7ce3dfff86d643ca52a3fb917a09a4b30606ba2f..cf33db51009e07dcb20a53d6dbe31ffd6b9fe18e 100644 (file)
--- a/libblkid-tiny/btrfs.c
+++ b/libblkid-tiny/btrfs.c
@@ -70,7 +70,7 @@ static int probe_btrfs(blkid_probe pr, const struct blkid_idmag *mag)
        if (*bfs->label)
                blkid_probe_set_label(pr,
                                (unsigned char *) bfs->label,
-                               sizeof(bfs->label));
+                               sizeof(bfs->label) - 1);
 
        blkid_probe_set_uuid(pr, bfs->fsid);
        blkid_probe_set_uuid_as(pr, bfs->dev_item.uuid, "UUID_SUB");