From: Thomas Graf <tgraf@suug.ch>
Date: Mon, 22 Nov 2010 13:18:59 +0000 (+0100)
Subject: nl_recv(): Make passing creds pointer optional
X-Git-Tag: libnl3_0~22
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9fbdf6c92ac6e340725bf98decd63d558652c233;p=thirdparty%2Flibnl.git

nl_recv(): Make passing creds pointer optional
---

diff --git a/lib/nl.c b/lib/nl.c
index 97a5df0..5616dcc 100644
--- a/lib/nl.c
+++ b/lib/nl.c
@@ -485,8 +485,10 @@ retry:
 	for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg)) {
 		if (cmsg->cmsg_level == SOL_SOCKET &&
 		    cmsg->cmsg_type == SCM_CREDENTIALS) {
-			*creds = calloc(1, sizeof(struct ucred));
-			memcpy(*creds, CMSG_DATA(cmsg), sizeof(struct ucred));
+			if (creds) {
+				*creds = calloc(1, sizeof(struct ucred));
+				memcpy(*creds, CMSG_DATA(cmsg), sizeof(struct ucred));
+			}
 			break;
 		}
 	}