From: Tom Gundersen <teg@jklm.no>
Date: Fri, 13 Mar 2015 14:49:07 +0000 (+0100)
Subject: sd-rtnl: never set serial to 0
X-Git-Tag: v219.0~352
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=commitdiff_plain;h=913b0eef1a01e0c78f0453b0174e75d5caae1023;ds=sidebyside

sd-rtnl: never set serial to 0

In the unlikely event that we wrap the counter, skip 0 as this is used
for broadcasts.

Suggested by Richard Maw.
---

diff --git a/src/libsystemd/sd-rtnl/sd-rtnl.c b/src/libsystemd/sd-rtnl/sd-rtnl.c
index 268d36605..f483af991 100644
--- a/src/libsystemd/sd-rtnl/sd-rtnl.c
+++ b/src/libsystemd/sd-rtnl/sd-rtnl.c
@@ -262,7 +262,7 @@ static void rtnl_seal_message(sd_rtnl *rtnl, sd_rtnl_message *m) {
         assert(m);
         assert(m->hdr);
 
-        m->hdr->nlmsg_seq = rtnl->serial++;
+        m->hdr->nlmsg_seq = rtnl->serial++ ? : rtnl->serial++;
 
         rtnl_message_seal(m);