[Devel] [PATCH vz10] selftests/connector: make proc_filter terminate on its own

[Eva Kurchatova <eva.kurchatova@virtuozzo.com>]

proc_filter listens for process events until it is interrupted, so
under the harness it always runs into the timeout. Generate one event,
stop after five seconds, and fail if nothing was received.

https://virtuozzo.atlassian.net/browse/VSTOR-142450
Feature: fix selftests
Signed-off-by: Eva Kurchatova <eva.kurchatova@virtuozzo.com>
---
 tools/testing/selftests/connector/proc_filter.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/connector/proc_filter.c b/tools/testing/selftests/connector/proc_filter.c
index 4a825b997666..f269b0b67db6 100644
--- a/tools/testing/selftests/connector/proc_filter.c
+++ b/tools/testing/selftests/connector/proc_filter.c
@@ -14,6 +14,7 @@
 #include <strings.h>
 #include <errno.h>
 #include <signal.h>
+#include <sys/wait.h>
 #include <string.h>
 
 #include "../kselftest.h"
@@ -279,6 +280,16 @@ int main(int argc, char *argv[])
 		exit(1);
 	}
 
+	/*
+	 * Generate one event to observe and stop listening shortly after,
+	 * so that the test terminates on its own.
+	 */
+	signal(SIGALRM, sigint);
+	alarm(5);
+	if (fork() == 0)
+		_exit(0);
+	wait(NULL);
+
 	while (!interrupted) {
 		err = handle_events(epoll_fd, &proc_ev);
 		if (err < 0) {
@@ -306,5 +317,5 @@ int main(int argc, char *argv[])
 	close(nl_sock);
 
 	printf("Done total count: %d\n", tcount);
-	exit(0);
+	exit(tcount > 0 ? KSFT_PASS : KSFT_FAIL);
 }
-- 
2.55.0