From: Serge Hallyn <serge.hallyn@ubuntu.com>
Date: Fri, 1 May 2015 12:56:33 +0000 (+0200)
Subject: overlay: create workdir if it doesn't exist
X-Git-Tag: lxc-1.0.8~138
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=143b8959c1aec8fc0b62330782f6b9148ec0692c;p=thirdparty%2Flxc.git

overlay: create workdir if it doesn't exist

Otherwise a container created before we needed workdir will fail
to start after a kernel+lxc update.

Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
Acked-by: KATOH Yasufumi <karma@jazz.email.ne.jp>
---

diff --git a/src/lxc/bdev.c b/src/lxc/bdev.c
index 13d076be1..984690a0a 100644
--- a/src/lxc/bdev.c
+++ b/src/lxc/bdev.c
@@ -2219,6 +2219,11 @@ static int overlayfs_mount(struct bdev *bdev)
 		return -22;
 	}
 
+	if (mkdir_p(work, 0755) < 0 && errno != EEXIST) {
+		free(mntdata);
+		return -22;
+	}
+
 	// TODO We should check whether bdev->src is a blockdev, and if so
 	// but for now, only support overlays of a basic directory