From: Dmitry V. Levin <ldv@altlinux.org>
Date: Thu, 12 Jul 2012 20:54:46 +0000 (+0000)
Subject: Close pipe and wait for the pipe process termination
X-Git-Tag: v4.8~221
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;ds=sidebyside;h=cf53436f737c0273028503186fc0f837c7191085;p=strace

Close pipe and wait for the pipe process termination

In case of normal strace termination, when the trace output is
redirected to a file or a pipe, close it and wait for the pipe
process termination.

* strace.c (main): Before normal exit, close shared_log when it
differs from stderr, and wait for popen_pid termination.
---

diff --git a/strace.c b/strace.c
index e6d6d687..799fce51 100644
--- a/strace.c
+++ b/strace.c
@@ -2214,6 +2214,12 @@ main(int argc, char *argv[])
 
 	cleanup();
 	fflush(NULL);
+	if (shared_log != stderr)
+		fclose(shared_log);
+	if (popen_pid) {
+		while (waitpid(popen_pid, NULL, 0) < 0 && errno == EINTR)
+			;
+	}
 	if (exit_code > 0xff) {
 		/* Avoid potential core file clobbering.  */
 		struct rlimit rlim = {0, 0};