[lxc-devel] [PATCH 2/9] network: check result of if_nametoindex().

[Dongsheng Yang]

When we want to get index of a ifname which does not
exist, we should return a -EINVAL in this case.

Signed-off-by: Dongsheng Yang <yangds.fnst at cn.fujitsu.com>
Acked-by: Serge E. Hallyn <serge.hallyn at ubuntu.com>
---
 src/lxc/network.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/lxc/network.c b/src/lxc/network.c
index ce10d31..909f3fe 100644
--- a/src/lxc/network.c
+++ b/src/lxc/network.c
@@ -144,6 +144,8 @@ int lxc_netdev_move_by_name(const char *ifname, pid_t pid)
 		return -EINVAL;
 
 	index = if_nametoindex(ifname);
+	if (!index)
+		return -EINVAL;
 
 	return lxc_netdev_move_by_index(index, pid);
 }
-- 
1.8.4.2