From: John Crispin <blogic@openwrt.org>
Date: Sat, 30 Aug 2014 10:24:52 +0000 (+0200)
Subject: sane error message when read fails
X-Git-Url: http://git.openwrt.org/?p=project%2Fmdnsd.git;a=commitdiff_plain;h=577a15292736d87c656fe884bbe14be3605f8b49

sane error message when read fails

Signed-off-by: John Crispin <blogic@openwrt.org>
---

diff --git a/interface.c b/interface.c
index 7f53653..0d34e72 100644
--- a/interface.c
+++ b/interface.c
@@ -162,8 +162,8 @@ read_socket(struct uloop_fd *u, unsigned int events)
 	msg.msg_controllen = sizeof(cmsg6);
 
 	len = recvmsg(u->fd, &msg, flags);
-	if (len < 0) {
-		fprintf(stderr, "%s:%s[%d]\n", __FILE__, __func__, __LINE__);
+	if (len == -1) {
+		perror("read failed");
 		return;
 	}
 	for (cmsgptr = CMSG_FIRSTHDR(&msg); cmsgptr != NULL && ifindex == -1; cmsgptr = CMSG_NXTHDR(&msg, cmsgptr)) {