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/*-
* Copyright (c) 2006 nCircle Network Security, Inc.
* All rights reserved.
*
* This software was developed by Robert N. M. Watson for the TrustedBSD
* Project under contract to nCircle Network Security, Inc.
*
* 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, NCIRCLE NETWORK SECURITY,
* INC., 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.
*
* $FreeBSD$
*/
/*
* Confirm that privilege is required to invoke clock_settime(). So as not
* to mess up the clock too much, first query the time, then immediately set
* it. Test only CLOCK_REALTIME.
*/
#include <sys/time.h>
#include <err.h>
#include <errno.h>
#include <unistd.h>
#include "main.h"
void
priv_clock_settime(void)
{
struct timespec ts;
int error;
assert_root();
/*
* Query time.
*/
if (clock_gettime(CLOCK_REALTIME, &ts) < 0)
err(-1, "clock_gettime");
/*
* Set with privilege.
*/
if (clock_settime(CLOCK_REALTIME, &ts) < 0)
err(-1, "clock_settime as root");
/*
* Set without privilege.
*/
set_euid(UID_OTHER);
error = clock_settime(CLOCK_REALTIME, &ts);
if (error == 0)
errx(-1, "clock_settime succeeded as !root");
if (errno != EPERM)
errx(-1, "clock_settime wrong errno %d as !root", errno);
}
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