9fa5f6b4b9
implemented properly for a number of kernel subsystems. In general, they try to exercise the privilege first as the root user, then as a test user, in order to determine when privilege is being checked. Currently, these tests do not compare inside/outside jail, and probably should be enhanced to do that. Sponsored by: nCircle Network Security, Inc. Obtained from: TrustedBSD Project
76 lines
2.2 KiB
C
76 lines
2.2 KiB
C
/*-
|
|
* 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 adjtime(); first query, then
|
|
* try setting first with, and then without privilege.
|
|
*/
|
|
|
|
#include <sys/time.h>
|
|
|
|
#include <err.h>
|
|
#include <errno.h>
|
|
#include <unistd.h>
|
|
|
|
#include "main.h"
|
|
|
|
void
|
|
priv_adjtime(void)
|
|
{
|
|
struct timeval tv;
|
|
int error;
|
|
|
|
assert_root();
|
|
|
|
/*
|
|
* Query time adjustment.
|
|
*/
|
|
if (adjtime(NULL, &tv) < 0)
|
|
err(-1, "adjtime");
|
|
|
|
/*
|
|
* Set with privilege.
|
|
*/
|
|
if (adjtime(&tv, NULL) < 0)
|
|
err(-1, "adjtime as root");
|
|
|
|
/*
|
|
* Set without privilege.
|
|
*/
|
|
set_euid(UID_OTHER);
|
|
|
|
error = adjtime(&tv, NULL);
|
|
if (error == 0)
|
|
errx(-1, "adjtime succeeded as !root");
|
|
if (errno != EPERM)
|
|
errx(-1, "adjtime wrong errno %d as !root", errno);
|
|
}
|