2013-03-02 01:00:26 +00:00
|
|
|
/*-
|
|
|
|
* Copyright (c) 2012 The FreeBSD Foundation
|
|
|
|
* All rights reserved.
|
|
|
|
*
|
|
|
|
* This software was developed by Pawel Jakub Dawidek under sponsorship from
|
|
|
|
* the FreeBSD Foundation.
|
|
|
|
*
|
|
|
|
* 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 AUTHORS 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 AUTHORS 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.
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include <sys/cdefs.h>
|
|
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
|
|
|
|
#include <sys/types.h>
|
2014-03-16 11:04:44 +00:00
|
|
|
#include <sys/capsicum.h>
|
2013-03-02 01:00:26 +00:00
|
|
|
#include <sys/procdesc.h>
|
|
|
|
#include <sys/wait.h>
|
|
|
|
|
|
|
|
#include <err.h>
|
|
|
|
#include <errno.h>
|
|
|
|
#include <stdio.h>
|
|
|
|
#include <stdlib.h>
|
|
|
|
#include <unistd.h>
|
|
|
|
|
|
|
|
#include "misc.h"
|
|
|
|
|
|
|
|
int
|
|
|
|
main(void)
|
|
|
|
{
|
|
|
|
unsigned int mode;
|
|
|
|
pid_t pid;
|
|
|
|
int pfd;
|
|
|
|
|
|
|
|
printf("1..27\n");
|
|
|
|
|
|
|
|
mode = 666;
|
|
|
|
CHECK(cap_getmode(&mode) == 0);
|
|
|
|
/* If cap_getmode() succeeded mode should be modified. */
|
|
|
|
CHECK(mode != 666);
|
|
|
|
/* We are not in capability mode. */
|
|
|
|
CHECK(mode == 0);
|
|
|
|
|
|
|
|
/* Expect EFAULT. */
|
|
|
|
errno = 0;
|
|
|
|
CHECK(cap_getmode(NULL) == -1);
|
|
|
|
CHECK(errno == EFAULT);
|
|
|
|
errno = 0;
|
|
|
|
CHECK(cap_getmode((void *)(uintptr_t)0xdeadc0de) == -1);
|
|
|
|
CHECK(errno == EFAULT);
|
|
|
|
|
|
|
|
/* If parent is not in capability mode, child after fork() also won't be. */
|
|
|
|
pid = fork();
|
|
|
|
switch (pid) {
|
|
|
|
case -1:
|
|
|
|
err(1, "fork() failed");
|
|
|
|
case 0:
|
|
|
|
mode = 666;
|
|
|
|
CHECK(cap_getmode(&mode) == 0);
|
|
|
|
/* If cap_getmode() succeeded mode should be modified. */
|
|
|
|
CHECK(mode != 666);
|
|
|
|
/* We are not in capability mode. */
|
|
|
|
CHECK(mode == 0);
|
|
|
|
exit(0);
|
|
|
|
default:
|
|
|
|
if (waitpid(pid, NULL, 0) == -1)
|
|
|
|
err(1, "waitpid() failed");
|
|
|
|
}
|
|
|
|
|
|
|
|
/* If parent is not in capability mode, child after pdfork() also won't be. */
|
|
|
|
pid = pdfork(&pfd, 0);
|
|
|
|
switch (pid) {
|
|
|
|
case -1:
|
|
|
|
err(1, "pdfork() failed");
|
|
|
|
case 0:
|
|
|
|
mode = 666;
|
|
|
|
CHECK(cap_getmode(&mode) == 0);
|
|
|
|
/* If cap_getmode() succeeded mode should be modified. */
|
|
|
|
CHECK(mode != 666);
|
|
|
|
/* We are not in capability mode. */
|
|
|
|
CHECK(mode == 0);
|
|
|
|
exit(0);
|
|
|
|
default:
|
|
|
|
if (pdwait(pfd) == -1)
|
|
|
|
err(1, "pdwait() failed");
|
|
|
|
close(pfd);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* In capability mode... */
|
|
|
|
|
|
|
|
CHECK(cap_enter() == 0);
|
|
|
|
|
|
|
|
mode = 666;
|
|
|
|
CHECK(cap_getmode(&mode) == 0);
|
|
|
|
/* If cap_getmode() succeeded mode should be modified. */
|
|
|
|
CHECK(mode != 666);
|
|
|
|
/* We are in capability mode. */
|
|
|
|
CHECK(mode == 1);
|
|
|
|
|
|
|
|
/* Expect EFAULT. */
|
|
|
|
errno = 0;
|
|
|
|
CHECK(cap_getmode(NULL) == -1);
|
|
|
|
CHECK(errno == EFAULT);
|
|
|
|
errno = 0;
|
|
|
|
CHECK(cap_getmode((void *)(uintptr_t)0xdeadc0de) == -1);
|
|
|
|
CHECK(errno == EFAULT);
|
|
|
|
|
|
|
|
/* If parent is in capability mode, child after fork() also will be. */
|
|
|
|
pid = fork();
|
|
|
|
switch (pid) {
|
|
|
|
case -1:
|
|
|
|
err(1, "fork() failed");
|
|
|
|
case 0:
|
|
|
|
mode = 666;
|
|
|
|
CHECK(cap_getmode(&mode) == 0);
|
|
|
|
/* If cap_getmode() succeeded mode should be modified. */
|
|
|
|
CHECK(mode != 666);
|
|
|
|
/* We are in capability mode. */
|
|
|
|
CHECK(mode == 1);
|
|
|
|
exit(0);
|
|
|
|
default:
|
|
|
|
/*
|
|
|
|
* wait(2) and friends are not permitted in the capability mode,
|
|
|
|
* so we can only just wait for a while.
|
|
|
|
*/
|
|
|
|
sleep(1);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* If parent is in capability mode, child after pdfork() also will be. */
|
|
|
|
pid = pdfork(&pfd, 0);
|
|
|
|
switch (pid) {
|
|
|
|
case -1:
|
|
|
|
err(1, "pdfork() failed");
|
|
|
|
case 0:
|
|
|
|
mode = 666;
|
|
|
|
CHECK(cap_getmode(&mode) == 0);
|
|
|
|
/* If cap_getmode() succeeded mode should be modified. */
|
|
|
|
CHECK(mode != 666);
|
|
|
|
/* We are in capability mode. */
|
|
|
|
CHECK(mode == 1);
|
|
|
|
exit(0);
|
|
|
|
default:
|
|
|
|
if (pdwait(pfd) == -1)
|
|
|
|
err(1, "pdwait() failed");
|
|
|
|
close(pfd);
|
|
|
|
}
|
|
|
|
|
|
|
|
exit(0);
|
|
|
|
}
|