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