From acf9f89e61caadbc614107773a2fa14d8f3458ea Mon Sep 17 00:00:00 2001
From: Serge Hallyn <serge.hallyn@ubuntu.com>
Date: Mon, 14 Jul 2014 13:22:53 -0500
Subject: [PATCH] rootfs_is_blockdev: don't run if no rootfs is specified

Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
---
 src/lxc/bdev.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/lxc/bdev.c b/src/lxc/bdev.c
index 9d29e3e1a..fad284596 100644
--- a/src/lxc/bdev.c
+++ b/src/lxc/bdev.c
@@ -3123,6 +3123,10 @@ bool rootfs_is_blockdev(struct lxc_conf *conf)
 	struct stat st;
 	int ret;
 
+	if (!conf->rootfs.path || strcmp(conf->rootfs.path, "/") == 0 ||
+		strlen(conf->rootfs.path) == 0)
+		return false;
+
 	ret = stat(conf->rootfs.path, &st);
 	if (ret == 0 && S_ISBLK(st.st_mode))
 		return true;