lib: fix getsockopt_cmsg_data retrieval

The `type` parameter was not being compared with `cmsg_type`, so the
result of this function was always a pointer to the first header
matching the level.

Signed-off-by: Rafael Zalamena <rzalamena@opensourcerouting.org>

diff --git a/lib/sockopt.c b/lib/sockopt.c
index 815be86c2e152eec3f943f4d87007ca25363e8a2..e979bef17401159ffaaa09277ad4d06c329410f9 100644 (file)
--- a/lib/sockopt.c
+++ b/lib/sockopt.c
@@ -75,7 +75,7 @@ static void *getsockopt_cmsg_data(struct msghdr *msgh, int level, int type)
 
        for (cmsg = ZCMSG_FIRSTHDR(msgh); cmsg != NULL;
             cmsg = CMSG_NXTHDR(msgh, cmsg))
-               if (cmsg->cmsg_level == level && cmsg->cmsg_type)
+               if (cmsg->cmsg_level == level && cmsg->cmsg_type == type)
                        return (ptr = CMSG_DATA(cmsg));
 
        return NULL;