1d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes/* 2d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * Check fault injection along with signal injection. 3d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * 4d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * Copyright (c) 2017 Dmitry V. Levin <ldv@altlinux.org> 5d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * All rights reserved. 6d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * 7d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * Redistribution and use in source and binary forms, with or without 8d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * modification, are permitted provided that the following conditions 9d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * are met: 10d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * 1. Redistributions of source code must retain the above copyright 11d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * notice, this list of conditions and the following disclaimer. 12d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * 2. Redistributions in binary form must reproduce the above copyright 13d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * notice, this list of conditions and the following disclaimer in the 14d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * documentation and/or other materials provided with the distribution. 15d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * 3. The name of the author may not be used to endorse or promote products 16d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * derived from this software without specific prior written permission. 17d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * 18d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes */ 29d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 30d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes#include "tests.h" 31d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes#include <signal.h> 32d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes#include <unistd.h> 33d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes#include <sys/stat.h> 34d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes#include <asm/unistd.h> 35d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 36d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughesstatic struct stat before, after; 37d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 38d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughesstatic void 39d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hugheshandler(int sig) 40d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes{ 41d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes if (stat(".", &after)) 42d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes syscall(__NR_exit_group, 2); 43d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 44d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes if (before.st_dev != after.st_dev || before.st_ino != after.st_ino) 45d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes syscall(__NR_exit_group, 3); 46d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 47d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes syscall(__NR_exit_group, 0); 48d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes} 49d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 50d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughesint 51d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughesmain(void) 52d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes{ 53d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes const struct sigaction act = { .sa_handler = handler }; 54d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes if (sigaction(SIGUSR1, &act, NULL)) 55d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes perror_msg_and_fail("sigaction"); 56d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 57d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes sigset_t mask; 58d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes sigemptyset(&mask); 59d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes sigaddset(&mask, SIGUSR1); 60d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes if (sigprocmask(SIG_UNBLOCK, &mask, NULL)) 61d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes perror_msg_and_fail("sigprocmask"); 62d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 63d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes if (stat(".", &before)) 64d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes perror_msg_and_fail("stat"); 65d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 66d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes syscall(__NR_chdir, "."); 67d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes syscall(__NR_exit_group, 1); 68d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes return 1; 69d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes} 70