From: Serge Hallyn <serge.hallyn@ubuntu.com>
Date: Sat, 5 Apr 2014 02:26:16 +0000 (-0500)
Subject: lxc_spawn: initialize netpipe
X-Git-Tag: lxc-1.1.0.alpha1~160
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2f2623ec2b5d44d72123c72fb5471d96281fabe9;p=thirdparty%2Flxc.git

lxc_spawn: initialize netpipe

When rebooting an unprivileged container, netpipe starts out
as not -1.  If count_veths somehow changed this could lead
to trying to send data over nonexistent pipe.  (Ok can't
*really* happen, as it currently stands, but it's an open
end)

Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
---

diff --git a/src/lxc/start.c b/src/lxc/start.c
index ec1049640..21db8044f 100644
--- a/src/lxc/start.c
+++ b/src/lxc/start.c
@@ -786,6 +786,8 @@ static int lxc_spawn(struct lxc_handler *handler)
 	int preserve_mask = 0, i;
 	int netpipepair[2], nveths;
 
+	netpipe = -1;
+
 	for (i = 0; i < LXC_NS_MAX; i++)
 		if (handler->conf->inherit_ns_fd[i] != -1)
 			preserve_mask |= ns_info[i].clone_flag;