stress2: Initial import

Discussed with:	 kib

1 files changed, 142 insertions, 0 deletions

diff --git a/tools/test/stress2/misc/sem.sh b/tools/test/stress2/misc/sem.sh
new file mode 100755
index 000000000000..9b229ab662f5
--- /dev/null
+++ b/tools/test/stress2/misc/sem.sh
@@ -0,0 +1,142 @@
+#!/bin/sh
+
+#
+# Copyright (c) 2009 Peter Holm <pho@FreeBSD.org>
+# 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.
+#
+
+# Regression test for panic in semexit_myhook
+# Test scenario by kib@
+
+. ../default.cfg
+
+odir=`pwd`
+
+cd /tmp
+sed '1,/^EOF/d' < $odir/$0 > sem.c
+mycc -o sem -Wall sem.c
+rm -f sem.c
+
+cd $RUNDIR/..
+for i in `jot 5`; do
+	/tmp/sem&
+done
+for i in `jot 5`; do
+	wait
+done
+
+rm -f /tmp/sem
+
+exit
+EOF
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/ipc.h>
+#include <sys/msg.h>
+#include <sys/shm.h>
+#include <sys/sem.h>
+#include <signal.h>
+#include <sys/wait.h>
+#include <sched.h>
+#include <errno.h>
+#include <err.h>
+
+int	semid = -1;
+key_t	semkey;
+struct	sembuf sop[2];
+
+size_t	pgsize;
+pid_t	pid;
+
+void
+random_work(void)
+{
+	int i, n;
+
+	n = (arc4random() % 5000) + 200;
+	for (i = 0; i < n; i++)
+		(void) getpid();
+}
+
+int
+main()
+{
+	int i, j, seed, status;
+
+	seed = getpid();
+	semkey = ftok("/", seed);
+
+	for (i = 0; i < 5000; i++) {
+
+		pid = fork();
+		if (pid == -1) {
+			perror("fork");
+			exit(2);
+		}
+
+		if (pid == 0) {	/* child */
+			j = 0;
+			/* get sem */
+			do {
+				sched_yield();
+				semid = semget(semkey, 0, 0);
+			} while (semid == -1 && j++ < 10000);
+			if (semid == -1)
+				exit(1);
+
+			/*
+			 * Attempt to acquire the semaphore.
+			 */
+			sop[0].sem_num = 0;
+			sop[0].sem_op  = -1;
+			sop[0].sem_flg = SEM_UNDO;
+
+			semop(semid, sop, 1);
+			random_work();
+			_exit(0);
+
+		} else {	/* parent */
+		/* create sem */
+			if ((semid = semget(semkey, 1, IPC_CREAT | 010640)) == -1)
+				err(1, "semget (%s:%d)", __FILE__, __LINE__);
+			usleep(2000);
+
+			sop[0].sem_num = 0;
+			sop[0].sem_op  = 1;
+			sop[0].sem_flg = 0;
+			if (semop(semid, sop, 1) == -1)
+				warn("init: semop (%s:%d)", __FILE__, __LINE__);
+
+			random_work();
+			if (semctl(semid, 0, IPC_RMID, 0) == -1 && errno != EINVAL)
+				warn("shmctl IPC_RMID (%s:%d)", __FILE__, __LINE__);
+
+		}
+		waitpid(pid, &status, 0);
+	}
+        return (0);
+}