From: Shuai Zhang <zs.broccoli@gmail.com>
Date: Thu, 27 Nov 2014 12:38:01 +0000 (+0800)
Subject: fix wrong nlmsg_len
X-Git-Tag: lxc-1.1.0.alpha3~19
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b588716468c4171d60cbdb4afd2e747a6fa394b1;p=thirdparty%2Flxc.git

fix wrong nlmsg_len

nlmsg_len is the length of message including header.

Signed-off-by: Shuai Zhang <zs.broccoli@gmail.com>
Acked-by: Stéphane Graber <stgraber@ubuntu.com>
---

diff --git a/src/lxc/nl.c b/src/lxc/nl.c
index 7c0f1e53b..132a907f7 100644
--- a/src/lxc/nl.c
+++ b/src/lxc/nl.c
@@ -107,14 +107,14 @@ void nla_end_nested(struct nlmsg *nlmsg, struct rtattr *attr)
 extern struct nlmsg *nlmsg_alloc(size_t size)
 {
 	struct nlmsg *nlmsg;
-	size_t len = NLMSG_ALIGN(size) + NLMSG_ALIGN(sizeof(struct nlmsghdr *));
+	size_t len = NLMSG_HDRLEN + NLMSG_ALIGN(size);
 
 	nlmsg = (struct nlmsg *)malloc(len);
 	if (!nlmsg)
 		return NULL;
 
 	memset(nlmsg, 0, len);
-	nlmsg->nlmsghdr.nlmsg_len = NLMSG_ALIGN(size);
+	nlmsg->nlmsghdr.nlmsg_len = NLMSG_HDRLEN;
 
 	return nlmsg;
 }