From: Renato Westphal <renato@opensourcerouting.org>
Date: Wed, 20 Sep 2017 17:02:44 +0000 (-0300)
Subject: lib: log error details if F_SETLK fails
X-Git-Tag: frr-4.0-dev~277^2~2
X-Git-Url: https://git.puffer.fish/?a=commitdiff_plain;h=e4e451ce15d0970e41cb2c1b5ee65f16e3f64683;p=matthieu%2Ffrr.git

lib: log error details if F_SETLK fails

Somehow F_SETLK was failing for me a couple of days ago, and not being
able to see the errno value was frustrating.

Signed-off-by: Renato Westphal <renato@opensourcerouting.org>
---

diff --git a/lib/pid_output.c b/lib/pid_output.c
index e2e4434150..9a7307bc4f 100644
--- a/lib/pid_output.c
+++ b/lib/pid_output.c
@@ -57,7 +57,8 @@ pid_t pid_output(const char *path)
 		lock.l_whence = SEEK_SET;
 
 		if (fcntl(fd, F_SETLK, &lock) < 0) {
-			zlog_err("Could not lock pid_file %s, exiting", path);
+			zlog_err("Could not lock pid_file %s (%s), exiting",
+				 path, safe_strerror(errno));
 			exit(1);
 		}