svn commit: r282724 - user/pho/stress2/misc

[Peter Holm]

Author: pho
Date: Sun May 10 12:41:34 2015
New Revision: 282724
URL: https://svnweb.freebsd.org/changeset/base/282724

Log:
  Added a regression test.
  
  Sponsored by:	 EMC / Isilon storage division

Added:
  user/pho/stress2/misc/execve.sh   (contents, props changed)

Added: user/pho/stress2/misc/execve.sh
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ user/pho/stress2/misc/execve.sh	Sun May 10 12:41:34 2015	(r282724)
@@ -0,0 +1,132 @@
+#!/bin/sh
+
+#
+# Copyright (c) 2015 EMC Corp.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+# $FreeBSD$
+#
+
+# Test of execve(2) from a threaded program.
+# "load: 5.40  cmd: bash 24517 [vmmaps] 2.45r 0.00u 0.00s 0% 3448k" seen.
+# Fixed by r282708.
+
+. ../default.cfg
+
+here=`pwd`
+cd /tmp
+sed '1,/^EOF/d' < $here/$0 > execve.c
+mycc -o execve -Wall -Wextra -O2 execve.c -lpthread || exit 1
+rm -f execve.c
+
+daemon sh -c "(cd $here/../testcases/swap; ./swap -t 20m -i 20 -l 100)" > \
+    /dev/null 2>&1
+sleep `jot -r 1 1 9`
+for i in `jot 2`; do
+	/tmp/execve
+done
+while pgrep -q swap; do
+	pkill -9 swap
+done
+
+rm -f /tmp/execve /tmp/execve.core
+exit 0
+EOF
+#include <sys/types.h>
+#include <sys/resource.h>
+#include <sys/stat.h>
+#include <sys/wait.h>
+
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <pthread.h>
+#include <sched.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define LOOPS 50
+#define PARALLEL 50
+
+volatile int go;
+
+void *
+texecve(void *arg __unused)
+{
+	char *cmdline[] = { "/usr/bin/true", NULL };
+
+	while (go == 0)
+		usleep(100);
+        if (execve(cmdline[0], cmdline, NULL) == -1)
+		err(1, "execve");
+
+	return (NULL);
+}
+
+void
+test(void)
+{
+	pthread_t tid[5];
+	int i, rc;
+
+	go = 0;
+
+	for (i = 0; i < 5; i++) {
+		if ((rc = pthread_create(&tid[i], NULL, texecve, NULL)) != 0)
+			errc(1, rc, "texecve()");
+	}
+
+	usleep(arc4random() % 2000);
+	go = 1;
+
+	for (i = 0; i < 5; i++)
+		if ((rc = pthread_join(tid[i], NULL)) != 0)
+			errc(1, rc, "pthread_join(%d)", i);
+	_exit(0);
+}
+
+int
+main(void)
+{
+	struct rlimit rl;
+	int i, j;
+
+	rl.rlim_max = rl.rlim_cur = 0;
+	if (setrlimit(RLIMIT_CORE, &rl) == -1)
+		warn("setrlimit");
+
+	for (i = 0; i < LOOPS; i++) {
+		for (j = 0; j < PARALLEL; j++) {
+			if (fork() == 0)
+				test();
+		}
+
+		for (j = 0; j < PARALLEL; j++)
+			wait(NULL);
+	}
+
+	return (0);
+}