| Elliott Hughes | d35df49 | 2017-02-15 15:19:05 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Check that signal injection works properly. |
| 3 | * |
| 4 | * Copyright (c) 2017 Dmitry V. Levin <ldv@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 <asm/unistd.h> |
| 34 | |
| 35 | static void |
| 36 | handler(int sig) |
| 37 | { |
| 38 | syscall(__NR_exit_group, 0); |
| 39 | } |
| 40 | |
| 41 | int |
| 42 | main(void) |
| 43 | { |
| 44 | const struct sigaction act = { .sa_handler = handler }; |
| 45 | if (sigaction(SIGUSR1, &act, NULL)) |
| 46 | perror_msg_and_fail("sigaction"); |
| 47 | |
| 48 | sigset_t mask; |
| 49 | sigemptyset(&mask); |
| 50 | sigaddset(&mask, SIGUSR1); |
| 51 | if (sigprocmask(SIG_UNBLOCK, &mask, NULL)) |
| 52 | perror_msg_and_fail("sigprocmask"); |
| 53 | |
| 54 | syscall(__NR_chdir, "."); |
| 55 | syscall(__NR_exit_group, 1); |
| 56 | return 1; |
| 57 | } |