audit_pipe_ioctl.c

/*-
 * Copyright (c) 2006 Robert N. M. Watson
 * All rights reserved.
 *
 * This software was developed by Robert Watson for the TrustedBSD Project.
 *
 * 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.
 */

/*
 * Simple audit pipe regression test to confirm that the ioctls for queue
 * limit information basically work.  No attempt is made to validate the
 * queue length returned, however.
 */

#include <sys/types.h>
#include <sys/ioctl.h>

#include <security/audit/audit_ioctl.h>

#include <err.h>
#include <fcntl.h>

int
main(int argc, char *argv[])
{
	u_int len, minlen, maxlen;
	u_int64_t astat;
	int fd;

	fd = open("/dev/auditpipe", O_RDONLY);
	if (fd < 0)
		err(-1, "/dev/auditpipe");

	/*
	 * First, test that we can read the queue length, queue limit, and
	 * bounds on queue length limits.
	 */
	len = (u_int)(-1);
	if (ioctl(fd, AUDITPIPE_GET_QLEN, &len) < 0)
		err(-1, "AUDITPIPE_GET_QLEN");
	if (len == (u_int)(-1))
		errx(-1, "AUDITPIPE_GET_QLEN: unchanged");

	minlen = (u_int)(-1);
	if (ioctl(fd, AUDITPIPE_GET_QLIMIT_MIN, &minlen) < 0)
		err(-1, "AUDITPIPE_GET_QLIMIT_MIN");
	if (minlen == (u_int)(-1))
		errx(-1, "AUDITPIPE_GET_QLIMIT_MIN: unchanged");

	maxlen = (u_int)(-1);
	if (ioctl(fd, AUDITPIPE_GET_QLIMIT_MAX, &maxlen) < 0)
		err(-1, "AUDITPIPE_GET_QLIMIT_MAX");
	if (maxlen == (u_int)(-1))
		errx(-1, "AUDITPIPE_GET_QLIMIT_MAX: unchanged");

	len = (u_int)(-1);
	if (ioctl(fd, AUDITPIPE_GET_QLIMIT, &len) < 0)
		err(-1, "AUDITPIPE_GET_QLIMIT");
	if (len == (u_int)(-1))
		errx(-1, "AUDITPIPE_GET_QLIMIT: unchanged");

	if (!(len >= minlen))
		errx(-1, "queue length < minlen");

	if (!(len <= maxlen))
		errx(-1, "queue length > maxlen");

	/*
	 * Try setting the queue length to first minimum, then maximum
	 * lengths.  Query after each to make sure it changed.
	 */
	len = minlen;
	if (ioctl(fd, AUDITPIPE_SET_QLIMIT, &len) < 0)
		err(-1, "AUDITPIPE_SET_QLIMIT(min)");

	if (ioctl(fd, AUDITPIPE_GET_QLIMIT, &len) < 0)
		err(-1, "AUDITPIPE_GET_QLIMIT");

	if (len != minlen)
		errx(-1, "set to minlen didn't work");

	len = maxlen;
	if (ioctl(fd, AUDITPIPE_SET_QLIMIT, &len) < 0)
		err(-1, "AUDITPIPE_SET_QLIMIT(max)");

	if (ioctl(fd, AUDITPIPE_GET_QLIMIT, &len) < 0)
		err(-1, "AUDITPIPE_GETQLIMIT");

	if (len != maxlen)
		errx(-1, "set to maxlen didn't work");

	/*
	 * Check that we can query the defined stats.  No attempt to
	 * validate.
	 */
	astat = (u_int64_t)(int64_t)(-1);
	if (ioctl(fd, AUDITPIPE_GET_INSERTS, &astat) < 0)
		err(-1, "AUDITPIPE_GET_INSERTS");
	if (astat == (u_int64_t)(int64_t)(-1))
		errx(-1, "AUDITPIPE_GET_INSERTS: unchanged");

	astat = (u_int64_t)(int64_t)(-1);
	if (ioctl(fd, AUDITPIPE_GET_READS, &astat) < 0)
		err(-1, "AUDITPIPE_GET_READS");
	if (astat == (u_int64_t)(int64_t)(-1))
		errx(-1, "AUDITPIPE_GET_READS: unchanged");

	astat = (u_int64_t)(int64_t)(-1);
	if (ioctl(fd, AUDITPIPE_GET_DROPS, &astat) < 0)
		err(-1, "AUDITPIPE_GET_DROPS");
	if (astat == (u_int64_t)(int64_t)(-1))
		errx(-1, "AUDITPIPE_GET_DROPS: unchanged");

	astat = (u_int64_t)(int64_t)(-1);
	if (ioctl(fd, AUDITPIPE_GET_TRUNCATES, &astat) < 0)
		err(-1, "AUDITPIPE_GET_TRUNCATES");
	if (astat == (u_int64_t)(int64_t)(-1))
		errx(-1, "AUDITPIPE_GET_TRUNCATES: unchanged");

	return (0);
}