122 lines
3.2 KiB
Bash
Executable File
122 lines
3.2 KiB
Bash
Executable File
#!/bin/sh
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#
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# Copyright (c) 2013 EMC Corp.
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# Regression test for r218019: "panic: oof, we didn't get our fd"
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# Page fault seen:
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# https://people.freebsd.org/~pho/stress/log/kostik895.txt
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# Caused by r300792 + r300793.
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# Fixed by r301580.
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[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
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. ../default.cfg
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odir=`pwd`
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cd /tmp
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sed '1,/^EOF/d' < $odir/$0 > setuid.c
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rm -f /tmp/setuid
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mycc -o setuid -Wall -Wextra -O2 -g setuid.c -static || exit 1
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rm -f setuid.c
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mount | grep $mntpoint | grep -q /dev/md && umount -f $mntpoint
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mdconfig -l | grep -q md$mdstart && mdconfig -d -u $mdstart
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mdconfig -a -t swap -s 2g -u $mdstart || exit 1
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bsdlabel -w md$mdstart auto
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newfs $newfs_flags md${mdstart}$part > /dev/null
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mount /dev/md${mdstart}$part $mntpoint
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chmod 777 $mntpoint
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mkdir $mntpoint/root
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cp /tmp/setuid $mntpoint/root/nop
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chown nobody:nobody $mntpoint/root/nop
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chmod 4755 $mntpoint/root/nop
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chmod 777 $mntpoint/root
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echo "Expect Abort trap"
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./setuid $mntpoint/root 1
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./setuid $mntpoint/root 2
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./setuid $mntpoint/root 3
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./setuid $mntpoint/root 4
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./setuid $mntpoint/root 5
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./setuid $mntpoint/root 6
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./setuid $mntpoint/root 7
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while mount | grep "on $mntpoint " | grep -q /dev/md; do
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umount $mntpoint || sleep 1
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done
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mdconfig -d -u $mdstart
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rm -f /tmp/setuid /tmp/nop
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exit
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EOF
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#include <sys/types.h>
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#include <pwd.h>
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#include <err.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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int
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main(int argc, char **argv)
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{
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char *av[2];
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int fd;
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if (argc == 1)
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return (0);
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if (chroot(argv[1]) != 0)
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err(1, "chroot(%s)", argv[1]);
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fd = atoi(argv[2]);
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if (fd & 1) {
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fprintf(stderr, "Close fd 0 ");
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close(0);
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}
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if (fd & 2) {
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fprintf(stderr, "Close fd 1 ");
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close(1);
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}
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if (fd & 4) {
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fprintf(stderr, "Close fd 2\n");
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close(2);
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} else
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fprintf(stderr, "\n");
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if (chdir("/") != 0)
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err(1, "chdir");
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av[0] = "/nop";
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av[1] = 0;
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if (execve(av[0], av, NULL) == -1)
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err(1, "execve");
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return (0);
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}
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