svn commit: r258509 - user/pho/stress2/misc

[Peter Holm]

Author: pho
Date: Sun Nov 24 09:09:43 2013
New Revision: 258509
URL: http://svnweb.freebsd.org/changeset/base/258509

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

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

Added: user/pho/stress2/misc/vfork.sh
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ user/pho/stress2/misc/vfork.sh	Sun Nov 24 09:09:43 2013	(r258509)
@@ -0,0 +1,125 @@
+#!/bin/sh
+
+#
+# Copyright (c) 2013 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.
+#
+# $FreeBSD$
+#
+
+# Regression test for r246484.
+
+cat > vfork1.c <<- EOF
+#include <err.h>
+#include <stdio.h>
+#include <unistd.h>
+
+int
+main(void)
+{
+	pid_t pid;
+
+	fprintf(stderr, "%d\n", getpid());
+	if ((pid = vfork()) == 0) {
+#if 0
+		if (ptrace(PT_TRACE_ME, 0, 0, 0) == -1)
+			err(1, "PT_TRACEME");
+#endif
+		sleep(30);
+		_exit(0);
+	}
+	if (pid == -1)
+		err(1, "vfork");
+
+	return (0);
+}
+EOF
+cc -o vfork1 -Wall -Wextra -g vfork1.c
+rm  vfork1.c
+
+cat > vfork2.c <<- EOF
+#include <sys/types.h>
+#include <err.h>
+#include <errno.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <strings.h>
+#include <sys/ptrace.h>
+#include <sys/resource.h>
+#include <sys/time.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+int
+main(int argc, char **argv)
+{
+	pid_t pid, rpid;
+	struct rusage ru;
+	int status;
+
+	if (argc != 2)
+		errx(1, "Usage: %s <pid>", argv[0]);
+	pid = atoi(argv[1]);
+
+	if (pid == -1)
+		err(1, "fork()");
+	if (ptrace(PT_ATTACH, pid, NULL, 0) == -1)
+		err(1, "ptrace(%d) attach", pid);
+	if (wait(NULL) == -1)
+		err(1, "wait");
+	bzero(&ru, sizeof(ru));
+	usleep(2000);
+	if ((rpid = wait4(-1, &status, WNOHANG, &ru)) == -1) {
+			err(1, "OK wait4");
+	}
+	if (rpid == 0) {
+//		fprintf(stderr, "No rusage info.\n");
+		if (ptrace(PT_DETACH, pid, NULL, 0) == -1)
+			err(1, "ptrace(%d) detach", pid);
+		if (wait(&status) == -1)
+			err(1, "wait");
+	} else {
+		fprintf(stderr, "FAIL Got unexpected rusage.\n");
+		if (ru.ru_utime.tv_sec != 0)
+			fprintf(stderr, "FAIL tv_sec\n");
+	}
+	if (status != 0x4000)
+		fprintf(stderr, "FAIL Child exit status 0x%x\n", status);
+
+	return (0);
+}
+EOF
+cc -o vfork2 -Wall -Wextra -g vfork2.c
+rm  vfork2.c
+
+./vfork1 &
+sleep .2
+childpid=`ps -l | grep -v grep | grep vfork1 |
+    tail -1 | grep nanslp | awk '{print $2}'`
+# Seen before fix:
+# failed to set signal flags properly for ast()
+./vfork2 $childpid
+
+rm -f vfork1 vfork2