From: Pierre-Marc Fournier <pierre-marc.fournier@polymtl.ca>
Date: Wed, 28 Oct 2009 04:12:09 +0000 (-0400)
Subject: ustd: fix opening mode of pidfile to support writing to fifos
X-Git-Tag: v1.9.1~841
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=5d72e651d038661be29b162373be97611bb4e61c;p=lttng-ust.git

ustd: fix opening mode of pidfile to support writing to fifos

The fifo is opened in write-only in order to block until someone
opens it.
---

diff --git a/ustd/ustd.c b/ustd/ustd.c
index bfa6352e..5a456951 100644
--- a/ustd/ustd.c
+++ b/ustd/ustd.c
@@ -545,7 +545,7 @@ static int write_pidfile(const char *file_name, pid_t pid)
 {
 	FILE *pidfp;
 
-	pidfp = fopen(file_name, "w+");
+	pidfp = fopen(file_name, "w");
 	if(!pidfp) {
 		PERROR("fopen (%s)", pidfile);
 		WARN("killing child process");