From: topimiettinen <topimiettinen@users.noreply.github.com>
Date: Sat, 14 May 2016 16:46:23 +0000 (+0000)
Subject: namespace: unmount old /dev under our new private /dev (#3254)
X-Git-Tag: v230~53
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=9e5f825280192be429cc79153235d12778427fae;p=thirdparty%2Fsystemd.git

namespace: unmount old /dev under our new private /dev (#3254)

Drop all dangling old /dev mounts before mounting a new private /dev tree.
---

diff --git a/src/core/namespace.c b/src/core/namespace.c
index b573f008b91..ef85bfec237 100644
--- a/src/core/namespace.c
+++ b/src/core/namespace.c
@@ -237,6 +237,8 @@ static int mount_dev(BindMount *m) {
          */
         (void) mkdir_p_label(m->path, 0755);
 
+        /* Unmount everything in old /dev */
+        umount_recursive(m->path, 0);
         if (mount(dev, m->path, NULL, MS_MOVE, NULL) < 0) {
                 r = -errno;
                 goto fail;