[libvirt] [PATCH]LXC: force container to enable network namespace

[Chen Hanxiao]

From: Chen Hanxiao <chenhanxiao at cn.fujitsu.com>

If we don't enable network namespace, we could shutdown host
inside container by command 'shutdown', which is unacceptable.
This patch will force users to enable network namespace
before they start container.

Signed-off-by: Chen Hanxiao <chenhanxiao at cn.fujitsu.com>
---
 src/lxc/lxc_container.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/src/lxc/lxc_container.c b/src/lxc/lxc_container.c
index c7a22ab..5631ad7 100644
--- a/src/lxc/lxc_container.c
+++ b/src/lxc/lxc_container.c
@@ -1937,6 +1937,12 @@ int lxcContainerStart(virDomainDefPtr def,
     if (lxcNeedNetworkNamespace(def)) {
         VIR_DEBUG("Enable network namespaces");
         cflags |= CLONE_NEWNET;
+    } else {
+        errno = EINVAL;
+
+        virReportSystemError(errno, "%s",
+                             _("Network namespace needed"));
+        return -1;
     }
 
     pid = clone(lxcContainerChild, stacktop, cflags, &args);
-- 
1.7.1