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/*-
* Copyright (c) 2006 nCircle Network Security, Inc.
* Copyright (c) 2007 Robert N. M. Watson
* 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.
*
* $FreeBSD$
*/
/*
* Two privileges exist for writing sysctls -- one for sysctls writable only
* outside of jail (PRIV_SYSCTL_WRITE) and one for those also writable inside
* jail (PRIV_SYSCTL_WRITEJAIL).
*
* Test the prior by attempting to write to kern.domainname, and the latter
* by attempting to write to kern.hostname.
*/
#include <sys/types.h>
#include <sys/sysctl.h>
#include <err.h>
#include <errno.h>
#include <string.h>
#include <unistd.h>
#include "main.h"
#define KERN_HOSTNAME_STRING "kern.hostname"
#define KERN_DOMAINNAME_STRING "kern.domainname"
static char stored_hostname[1024];
static char stored_domainname[1024];
int
priv_sysctl_write_setup(int asroot, int injail, struct test *test)
{
size_t len;
int error;
len = sizeof(stored_hostname);
error = sysctlbyname(KERN_HOSTNAME_STRING, stored_hostname, &len,
NULL, 0);
if (error) {
warn("priv_sysctl_write_setup: sysctlbyname(\"%s\")",
KERN_HOSTNAME_STRING);
return (-1);
}
len = sizeof(stored_hostname);
error = sysctlbyname(KERN_DOMAINNAME_STRING, stored_domainname, &len,
NULL, 0);
if (error) {
warn("priv_sysctl_write_setup: sysctlbyname(\"%s\")",
KERN_DOMAINNAME_STRING);
return (-1);
}
return (0);
}
void
priv_sysctl_write(int asroot, int injail, struct test *test)
{
int error;
error = sysctlbyname(KERN_DOMAINNAME_STRING, NULL, NULL,
stored_domainname, strlen(stored_domainname));
if (asroot && injail)
expect("priv_sysctl_write(asroot, injail)", error, -1,
EPERM);
if (asroot && !injail)
expect("priv_sysctl_write(asroot, !injail)", error, 0, 0);
if (!asroot && injail)
expect("priv_sysctl_write(!asroot, injail)", error, -1,
EPERM);
if (!asroot && !injail)
expect("priv_sysctl_write(!asroot, !injail)", error, -1,
EPERM);
}
void
priv_sysctl_writejail(int asroot, int injail, struct test *test)
{
int error;
error = sysctlbyname(KERN_HOSTNAME_STRING, NULL, NULL,
stored_hostname, strlen(stored_hostname));
if (asroot && injail)
expect("priv_sysctl_writejail(asroot, injail)", error, 0, 0);
if (asroot && !injail)
expect("priv_sysctl_writejail(asroot, !injail)", error, 0, 0);
if (!asroot && injail)
expect("priv_sysctl_writejail(!asroot, injail)", error, -1,
EPERM);
if (!asroot && !injail)
expect("priv_sysctl_writejail(!asroot, !injail)", error, -1,
EPERM);
}
void
priv_sysctl_write_cleanup(int asroot, int injail, struct test *test)
{
}
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