1247606Spjd/*- 2247606Spjd * Copyright (c) 2012 The FreeBSD Foundation 3247606Spjd * All rights reserved. 4247606Spjd * 5247606Spjd * This software was developed by Pawel Jakub Dawidek under sponsorship from 6247606Spjd * the FreeBSD Foundation. 7247606Spjd * 8247606Spjd * Redistribution and use in source and binary forms, with or without 9247606Spjd * modification, are permitted provided that the following conditions 10247606Spjd * are met: 11247606Spjd * 1. Redistributions of source code must retain the above copyright 12247606Spjd * notice, this list of conditions and the following disclaimer. 13247606Spjd * 2. Redistributions in binary form must reproduce the above copyright 14247606Spjd * notice, this list of conditions and the following disclaimer in the 15247606Spjd * documentation and/or other materials provided with the distribution. 16247606Spjd * 17247606Spjd * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 18247606Spjd * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19247606Spjd * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20247606Spjd * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 21247606Spjd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22247606Spjd * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23247606Spjd * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24247606Spjd * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25247606Spjd * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26247606Spjd * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27247606Spjd * SUCH DAMAGE. 28247606Spjd */ 29247606Spjd 30247606Spjd#include <sys/cdefs.h> 31247606Spjd__FBSDID("$FreeBSD$"); 32247606Spjd 33247606Spjd#include <sys/types.h> 34263234Srwatson#include <sys/capsicum.h> 35247606Spjd#include <sys/procdesc.h> 36247606Spjd#include <sys/wait.h> 37247606Spjd 38247606Spjd#include <err.h> 39247606Spjd#include <errno.h> 40247606Spjd#include <stdio.h> 41247606Spjd#include <stdlib.h> 42247606Spjd#include <unistd.h> 43247606Spjd 44247606Spjd#include "misc.h" 45247606Spjd 46247606Spjdint 47247606Spjdmain(void) 48247606Spjd{ 49247606Spjd unsigned int mode; 50247606Spjd pid_t pid; 51247606Spjd int pfd; 52247606Spjd 53247606Spjd printf("1..27\n"); 54247606Spjd 55247606Spjd mode = 666; 56247606Spjd CHECK(cap_getmode(&mode) == 0); 57247606Spjd /* If cap_getmode() succeeded mode should be modified. */ 58247606Spjd CHECK(mode != 666); 59247606Spjd /* We are not in capability mode. */ 60247606Spjd CHECK(mode == 0); 61247606Spjd 62247606Spjd /* Expect EFAULT. */ 63247606Spjd errno = 0; 64247606Spjd CHECK(cap_getmode(NULL) == -1); 65247606Spjd CHECK(errno == EFAULT); 66247606Spjd errno = 0; 67247606Spjd CHECK(cap_getmode((void *)(uintptr_t)0xdeadc0de) == -1); 68247606Spjd CHECK(errno == EFAULT); 69247606Spjd 70247606Spjd /* If parent is not in capability mode, child after fork() also won't be. */ 71247606Spjd pid = fork(); 72247606Spjd switch (pid) { 73247606Spjd case -1: 74247606Spjd err(1, "fork() failed"); 75247606Spjd case 0: 76247606Spjd mode = 666; 77247606Spjd CHECK(cap_getmode(&mode) == 0); 78247606Spjd /* If cap_getmode() succeeded mode should be modified. */ 79247606Spjd CHECK(mode != 666); 80247606Spjd /* We are not in capability mode. */ 81247606Spjd CHECK(mode == 0); 82247606Spjd exit(0); 83247606Spjd default: 84247606Spjd if (waitpid(pid, NULL, 0) == -1) 85247606Spjd err(1, "waitpid() failed"); 86247606Spjd } 87247606Spjd 88247606Spjd /* If parent is not in capability mode, child after pdfork() also won't be. */ 89247606Spjd pid = pdfork(&pfd, 0); 90247606Spjd switch (pid) { 91247606Spjd case -1: 92247606Spjd err(1, "pdfork() failed"); 93247606Spjd case 0: 94247606Spjd mode = 666; 95247606Spjd CHECK(cap_getmode(&mode) == 0); 96247606Spjd /* If cap_getmode() succeeded mode should be modified. */ 97247606Spjd CHECK(mode != 666); 98247606Spjd /* We are not in capability mode. */ 99247606Spjd CHECK(mode == 0); 100247606Spjd exit(0); 101247606Spjd default: 102247606Spjd if (pdwait(pfd) == -1) 103247606Spjd err(1, "pdwait() failed"); 104247606Spjd close(pfd); 105247606Spjd } 106247606Spjd 107247606Spjd /* In capability mode... */ 108247606Spjd 109247606Spjd CHECK(cap_enter() == 0); 110247606Spjd 111247606Spjd mode = 666; 112247606Spjd CHECK(cap_getmode(&mode) == 0); 113247606Spjd /* If cap_getmode() succeeded mode should be modified. */ 114247606Spjd CHECK(mode != 666); 115247606Spjd /* We are in capability mode. */ 116247606Spjd CHECK(mode == 1); 117247606Spjd 118247606Spjd /* Expect EFAULT. */ 119247606Spjd errno = 0; 120247606Spjd CHECK(cap_getmode(NULL) == -1); 121247606Spjd CHECK(errno == EFAULT); 122247606Spjd errno = 0; 123247606Spjd CHECK(cap_getmode((void *)(uintptr_t)0xdeadc0de) == -1); 124247606Spjd CHECK(errno == EFAULT); 125247606Spjd 126247606Spjd /* If parent is in capability mode, child after fork() also will be. */ 127247606Spjd pid = fork(); 128247606Spjd switch (pid) { 129247606Spjd case -1: 130247606Spjd err(1, "fork() failed"); 131247606Spjd case 0: 132247606Spjd mode = 666; 133247606Spjd CHECK(cap_getmode(&mode) == 0); 134247606Spjd /* If cap_getmode() succeeded mode should be modified. */ 135247606Spjd CHECK(mode != 666); 136247606Spjd /* We are in capability mode. */ 137247606Spjd CHECK(mode == 1); 138247606Spjd exit(0); 139247606Spjd default: 140247606Spjd /* 141247606Spjd * wait(2) and friends are not permitted in the capability mode, 142247606Spjd * so we can only just wait for a while. 143247606Spjd */ 144247606Spjd sleep(1); 145247606Spjd } 146247606Spjd 147247606Spjd /* If parent is in capability mode, child after pdfork() also will be. */ 148247606Spjd pid = pdfork(&pfd, 0); 149247606Spjd switch (pid) { 150247606Spjd case -1: 151247606Spjd err(1, "pdfork() failed"); 152247606Spjd case 0: 153247606Spjd mode = 666; 154247606Spjd CHECK(cap_getmode(&mode) == 0); 155247606Spjd /* If cap_getmode() succeeded mode should be modified. */ 156247606Spjd CHECK(mode != 666); 157247606Spjd /* We are in capability mode. */ 158247606Spjd CHECK(mode == 1); 159247606Spjd exit(0); 160247606Spjd default: 161247606Spjd if (pdwait(pfd) == -1) 162247606Spjd err(1, "pdwait() failed"); 163247606Spjd close(pfd); 164247606Spjd } 165247606Spjd 166247606Spjd exit(0); 167247606Spjd} 168