svn commit: r256044 - user/pho/stress2/misc

[Peter Holm]

Author: pho
Date: Fri Oct  4 09:02:02 2013
New Revision: 256044
URL: http://svnweb.freebsd.org/changeset/base/256044

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

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

Added: user/pho/stress2/misc/setuid.sh
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ user/pho/stress2/misc/setuid.sh	Fri Oct  4 09:02:02 2013	(r256044)
@@ -0,0 +1,118 @@
+#!/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 r218019: "panic: oof, we didn't get our fd"
+
+[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
+
+. ../default.cfg
+
+odir=`pwd`
+cd /tmp
+sed '1,/^EOF/d' < $odir/$0 > setuid.c
+rm -f /tmp/setuid
+cc -o setuid -Wall -Wextra -O2 -g setuid.c -static || exit 1
+rm -f setuid.c
+
+mount | grep $mntpoint | grep -q /dev/md && umount -f $mntpoint
+mdconfig -l | grep -q md$mdstart &&  mdconfig -d -u $mdstart
+
+mdconfig -a -t swap -s 2g -u $mdstart || exit 1
+bsdlabel -w md$mdstart auto
+newfs -U md${mdstart}$part > /dev/null
+mount /dev/md${mdstart}$part $mntpoint
+chmod 777 $mntpoint
+mkdir $mntpoint/root
+
+cp /tmp/setuid $mntpoint/root/nop
+chown nobody:nobody $mntpoint/root/nop
+chmod 4755 $mntpoint/root/nop
+
+chmod 777 $mntpoint/root
+
+echo "Expect Abort trap"
+./setuid $mntpoint/root 1
+./setuid $mntpoint/root 2
+./setuid $mntpoint/root 3
+./setuid $mntpoint/root 4
+./setuid $mntpoint/root 5
+./setuid $mntpoint/root 6
+./setuid $mntpoint/root 7
+
+while mount | grep "on $mntpoint " | grep -q /dev/md; do
+	umount $mntpoint || sleep 1
+done
+rm -f /tmp/setuid /tmp/nop
+exit
+EOF
+#include <sys/types.h>
+#include <pwd.h>
+#include <err.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+int
+main(int argc, char **argv)
+{
+	char *av[3];
+	int fd;
+
+	if (argc == 1)
+		return (0);
+
+	if (chroot(argv[1]) != 0)
+		err(1, "chroot(%s)", argv[1]);
+	fd = atoi(argv[2]);
+
+	if (fd & 1) {
+		fprintf(stderr, "Close fd 0 ");
+		close(0);
+	}
+	if (fd & 2) {
+		fprintf(stderr, "Close fd 1 ");
+		close(1);
+	}
+	if (fd & 4) {
+		fprintf(stderr, "Close fd 2\n");
+		close(2);
+	} else
+		fprintf(stderr, "\n");
+
+	if (chdir("/") != 0)
+		err(1, "chdir");
+	av[0] = "nop";
+	av[1] = "nop";
+	av[3] = 0;
+	if (execve(av[0], av, NULL) == -1)
+		err(1, "execve");
+
+	return (0);
+}