1162271Srwatson/*- 2162271Srwatson * Copyright (c) 2006 nCircle Network Security, Inc. 3172106Srwatson * Copyright (c) 2007 Robert N. M. Watson 4162271Srwatson * All rights reserved. 5162271Srwatson * 6162271Srwatson * This software was developed by Robert N. M. Watson for the TrustedBSD 7162271Srwatson * Project under contract to nCircle Network Security, Inc. 8162271Srwatson * 9162271Srwatson * Redistribution and use in source and binary forms, with or without 10162271Srwatson * modification, are permitted provided that the following conditions 11162271Srwatson * are met: 12162271Srwatson * 1. Redistributions of source code must retain the above copyright 13162271Srwatson * notice, this list of conditions and the following disclaimer. 14162271Srwatson * 2. Redistributions in binary form must reproduce the above copyright 15162271Srwatson * notice, this list of conditions and the following disclaimer in the 16162271Srwatson * documentation and/or other materials provided with the distribution. 17162271Srwatson * 18162271Srwatson * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19162271Srwatson * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20162271Srwatson * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21162271Srwatson * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR, NCIRCLE NETWORK SECURITY, 22162271Srwatson * INC., OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23162271Srwatson * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 24162271Srwatson * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 25162271Srwatson * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 26162271Srwatson * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 27162271Srwatson * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 28162271Srwatson * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29162271Srwatson * 30162271Srwatson * $FreeBSD: releng/10.3/tools/regression/priv/priv_sysctl_write.c 172106 2007-09-09 23:08:39Z rwatson $ 31162271Srwatson */ 32162271Srwatson 33162271Srwatson/* 34172106Srwatson * Two privileges exist for writing sysctls -- one for sysctls writable only 35172106Srwatson * outside of jail (PRIV_SYSCTL_WRITE) and one for those also writable inside 36172106Srwatson * jail (PRIV_SYSCTL_WRITEJAIL). 37172106Srwatson * 38172106Srwatson * Test the prior by attempting to write to kern.domainname, and the latter 39172106Srwatson * by attempting to write to kern.hostname. 40162271Srwatson */ 41162271Srwatson 42162271Srwatson#include <sys/types.h> 43162271Srwatson#include <sys/sysctl.h> 44162271Srwatson 45162271Srwatson#include <err.h> 46162271Srwatson#include <errno.h> 47162271Srwatson#include <string.h> 48162271Srwatson#include <unistd.h> 49162271Srwatson 50162271Srwatson#include "main.h" 51162271Srwatson 52162271Srwatson#define KERN_HOSTNAME_STRING "kern.hostname" 53172106Srwatson#define KERN_DOMAINNAME_STRING "kern.domainname" 54162271Srwatson 55172106Srwatsonstatic char stored_hostname[1024]; 56172106Srwatsonstatic char stored_domainname[1024]; 57172106Srwatson 58172106Srwatsonint 59172106Srwatsonpriv_sysctl_write_setup(int asroot, int injail, struct test *test) 60162271Srwatson{ 61162271Srwatson size_t len; 62162271Srwatson int error; 63162271Srwatson 64172106Srwatson len = sizeof(stored_hostname); 65172106Srwatson error = sysctlbyname(KERN_HOSTNAME_STRING, stored_hostname, &len, 66172106Srwatson NULL, 0); 67172106Srwatson if (error) { 68172106Srwatson warn("priv_sysctl_write_setup: sysctlbyname(\"%s\")", 69172106Srwatson KERN_HOSTNAME_STRING); 70172106Srwatson return (-1); 71172106Srwatson } 72162271Srwatson 73172106Srwatson len = sizeof(stored_hostname); 74172106Srwatson error = sysctlbyname(KERN_DOMAINNAME_STRING, stored_domainname, &len, 75172106Srwatson NULL, 0); 76172106Srwatson if (error) { 77172106Srwatson warn("priv_sysctl_write_setup: sysctlbyname(\"%s\")", 78172106Srwatson KERN_DOMAINNAME_STRING); 79172106Srwatson return (-1); 80172106Srwatson } 81162271Srwatson 82172106Srwatson return (0); 83172106Srwatson} 84162271Srwatson 85172106Srwatsonvoid 86172106Srwatsonpriv_sysctl_write(int asroot, int injail, struct test *test) 87172106Srwatson{ 88172106Srwatson int error; 89162271Srwatson 90172106Srwatson error = sysctlbyname(KERN_DOMAINNAME_STRING, NULL, NULL, 91172106Srwatson stored_domainname, strlen(stored_domainname)); 92172106Srwatson if (asroot && injail) 93172106Srwatson expect("priv_sysctl_write(asroot, injail)", error, -1, 94172106Srwatson EPERM); 95172106Srwatson if (asroot && !injail) 96172106Srwatson expect("priv_sysctl_write(asroot, !injail)", error, 0, 0); 97172106Srwatson if (!asroot && injail) 98172106Srwatson expect("priv_sysctl_write(!asroot, injail)", error, -1, 99172106Srwatson EPERM); 100172106Srwatson if (!asroot && !injail) 101172106Srwatson expect("priv_sysctl_write(!asroot, !injail)", error, -1, 102172106Srwatson EPERM); 103162271Srwatson} 104172106Srwatson 105172106Srwatsonvoid 106172106Srwatsonpriv_sysctl_writejail(int asroot, int injail, struct test *test) 107172106Srwatson{ 108172106Srwatson int error; 109172106Srwatson 110172106Srwatson error = sysctlbyname(KERN_HOSTNAME_STRING, NULL, NULL, 111172106Srwatson stored_hostname, strlen(stored_hostname)); 112172106Srwatson if (asroot && injail) 113172106Srwatson expect("priv_sysctl_writejail(asroot, injail)", error, 0, 0); 114172106Srwatson if (asroot && !injail) 115172106Srwatson expect("priv_sysctl_writejail(asroot, !injail)", error, 0, 0); 116172106Srwatson if (!asroot && injail) 117172106Srwatson expect("priv_sysctl_writejail(!asroot, injail)", error, -1, 118172106Srwatson EPERM); 119172106Srwatson if (!asroot && !injail) 120172106Srwatson expect("priv_sysctl_writejail(!asroot, !injail)", error, -1, 121172106Srwatson EPERM); 122172106Srwatson} 123172106Srwatson 124172106Srwatsonvoid 125172106Srwatsonpriv_sysctl_write_cleanup(int asroot, int injail, struct test *test) 126172106Srwatson{ 127172106Srwatson 128172106Srwatson} 129