e4defrag: skip "rootfs" entry when checking for ext4 filesystem

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

diff --git a/misc/e4defrag.c b/misc/e4defrag.c
index 424e0ca..8b0894f 100644 (file)
--- a/misc/e4defrag.c
+++ b/misc/e4defrag.c
@@ -430,6 +430,8 @@ static int is_ext4(const char *file)
        }
 
        while ((mnt = getmntent(fp)) != NULL) {
+               if (mnt->mnt_fsname[0] != '/')
+                       continue;
                len = strlen(mnt->mnt_dir);
                ret = memcmp(file_path, mnt->mnt_dir, len);
                if (ret != 0)