From 6ce91aafa8cf10985ad48b1f3aa445abd6b72866 Mon Sep 17 00:00:00 2001
From: Ilya Dmitrichenko <errordeveloper@gmail.com>
Date: Tue, 31 Mar 2015 16:16:59 +0100
Subject: [PATCH] Check if `/proc/<pid>/ns/net` is a symlink (fix #470)

---
 weave | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/weave b/weave
index ed903cee..6cdc0550 100755
--- a/weave
+++ b/weave
@@ -289,7 +289,7 @@ with_container_netns () {
 }
 
 connect_container_to_bridge() {
-    if [ "$(readlink $PROCFS/$CONTAINER_PID/ns/net)" = "$(readlink $PROCFS/$$/ns/net)" ] ; then
+    if [ -h "$PROCFS/$CONTAINER_PID/ns/net" -a -h "$PROCFS/$$/ns/net" -a "$(readlink $PROCFS/$CONTAINER_PID/ns/net)" = "$(readlink $PROCFS/$$/ns/net)" ] ; then
         echo "Container is running in the host network namespace, and therefore cannot be" >&2
         echo "connected to weave. Perhaps the container was started with --net=host." >&2
         return 1