From: Jens Axboe <axboe@fb.com>
Date: Tue, 25 Mar 2014 17:50:55 +0000 (-0700)
Subject: server: dump where we attempted to bind in case of failure
X-Git-Tag: fio-2.1.7~1^2~1
X-Git-Url: https://git.kernel.dk/?p=fio.git;a=commitdiff_plain;h=17e3531ad6dcd6d0d8f1191f7fe484a345f26f52;hp=b96b90c383b25f4d0a002f672c3ff3dc02fdbf7b

server: dump where we attempted to bind in case of failure

Helps locate what the issue is, instead of having to use
strace and similar tools.

Signed-off-by: Jens Axboe <axboe@fb.com>
---

diff --git a/server.c b/server.c
index 32d69140..0954d4c3 100644
--- a/server.c
+++ b/server.c
@@ -1267,6 +1267,8 @@ static int fio_init_server_ip(void)
 {
 	struct sockaddr *addr;
 	socklen_t socklen;
+	char buf[80];
+	const char *str;
 	int sk, opt;
 
 	if (use_ipv6)
@@ -1294,17 +1296,24 @@ static int fio_init_server_ip(void)
 #endif
 
 	if (use_ipv6) {
+		const void *src = &saddr_in6.sin6_addr;
+
 		addr = (struct sockaddr *) &saddr_in6;
 		socklen = sizeof(saddr_in6);
 		saddr_in6.sin6_family = AF_INET6;
+		str = inet_ntop(AF_INET6, src, buf, sizeof(buf));
 	} else {
+		const void *src = &saddr_in.sin_addr;
+
 		addr = (struct sockaddr *) &saddr_in;
 		socklen = sizeof(saddr_in);
 		saddr_in.sin_family = AF_INET;
+		str = inet_ntop(AF_INET, src, buf, sizeof(buf));
 	}
 
 	if (bind(sk, addr, socklen) < 0) {
 		log_err("fio: bind: %s\n", strerror(errno));
+		log_info("fio: failed with IPv%c %s\n", use_ipv6 ? '6' : '4', str);
 		close(sk);
 		return -1;
 	}