cap_test_pdkill.c

/*-
 * Copyright (c) 2009-2011 Robert N. M. Watson
 * Copyright (c) 2011 Jonathan Anderson
 * 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.
 */

/*
 * Test routines to make sure a variety of system calls are or are not
 * available in capability mode.  The goal is not to see if they work, just
 * whether or not they return the expected ECAPMODE.
 */

#include <sys/types.h>

#include <sys/capsicum.h>
#include <sys/errno.h>
#include <sys/procdesc.h>
#include <sys/resource.h>
#include <sys/wait.h>

#include <err.h>
#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include <stdio.h>

#include "cap_test.h"

void handle_signal(int);
void handle_signal(int sig) {
	exit(PASSED);
}

int
test_pdkill(void)
{
	int success = PASSED;
	int pd, error;
	pid_t pid;

	//cap_enter();

	error = pdfork(&pd, 0);
	if (error < 0)
		err(-1, "pdfork");

	else if (error == 0) {
		signal(SIGINT, handle_signal);
		sleep(3600);
		exit(FAILED);
	}

	/* Parent process; find the child's PID (we'll need it later). */
	error = pdgetpid(pd, &pid);
	if (error != 0)
		FAIL("pdgetpid");

	/* Kill the child! */
	usleep(100);
	error = pdkill(pd, SIGINT);
	if (error != 0)
		FAIL("pdkill");

	/* Make sure the child finished properly. */
	int status;
	while (waitpid(pid, &status, 0) != pid) {}
	if ((success == PASSED) && WIFEXITED(status))
		success = WEXITSTATUS(status);
	else
		success = FAILED;

	return (success);
}