robbiew | 0dc0765 | 2005-06-03 16:29:48 +0000 | [diff] [blame] | 1 | /* |
| 2 | |
| 3 | * Copyright (c) 2002-2003, Intel Corporation. All rights reserved. |
| 4 | * Created by: rusty.lynch REMOVE-THIS AT intel DOT com |
| 5 | * This file is licensed under the GPL license. For the full content |
Garrett Cooper | 2c28215 | 2010-12-16 00:55:50 -0800 | [diff] [blame] | 6 | * of this license, see the COPYING file at the top level of this |
robbiew | 0dc0765 | 2005-06-03 16:29:48 +0000 | [diff] [blame] | 7 | * source tree. |
| 8 | |
Garrett Cooper | 2c28215 | 2010-12-16 00:55:50 -0800 | [diff] [blame] | 9 | Test case for assertion #22 of the sigaction system call that verifies |
| 10 | that if the SA_NODEFER flag is set for a given signal, then when the |
| 11 | sa_sigaction signal-catching function is entered, then the signal that |
| 12 | was caught is not added to the signal mask by raising that signal in the |
robbiew | 0dc0765 | 2005-06-03 16:29:48 +0000 | [diff] [blame] | 13 | signal handler and verifying that the handler is reentered. |
Garrett Cooper | 2c28215 | 2010-12-16 00:55:50 -0800 | [diff] [blame] | 14 | |
robbiew | 0dc0765 | 2005-06-03 16:29:48 +0000 | [diff] [blame] | 15 | Steps: |
| 16 | 1. Fork a new process |
| 17 | 2. (parent) wait for child |
| 18 | 3. (child) Setup a signal handler for SIGINT with SA_NODEFER set |
| 19 | in the sa_flags field |
| 20 | 4. (child) raise SIGINT |
| 21 | 5. (child, signal handler) increment handler count |
| 22 | 6. (child, signal handler) if count is 1 then raise SIGINT |
| 23 | 7. (child, signal handler) if count is 1 then set error variable |
| 24 | 8. (child) if error is set then return -1, else return 0 |
| 25 | 6. (parent - returning from wait) If child returned 0 then exit 0, |
| 26 | otherwise exit -1. |
| 27 | */ |
| 28 | |
| 29 | #define _XOPEN_SOURCE 600 |
| 30 | |
| 31 | #include <signal.h> |
| 32 | #include <stdio.h> |
| 33 | #include <stdlib.h> |
| 34 | #include <sys/wait.h> |
| 35 | #include <unistd.h> |
| 36 | #include "posixtest.h" |
| 37 | |
| 38 | int handler_count = 0; |
| 39 | |
| 40 | void handler(int signo) |
| 41 | { |
| 42 | static int inside_handler = 0; |
| 43 | |
| 44 | printf("SIGINT caught\n"); |
| 45 | if (inside_handler) { |
| 46 | printf("Signal caught while inside handler\n"); |
| 47 | exit(0); |
| 48 | } |
| 49 | |
| 50 | inside_handler++; |
| 51 | handler_count++; |
| 52 | |
| 53 | if (handler_count == 1) { |
| 54 | printf("Raising SIGINT\n"); |
| 55 | raise(SIGINT); |
| 56 | printf("Returning from raising SIGINT\n"); |
| 57 | } |
| 58 | |
| 59 | inside_handler--; |
| 60 | } |
| 61 | |
| 62 | int main() |
| 63 | { |
| 64 | if (fork() == 0) { |
| 65 | /* child */ |
| 66 | |
| 67 | struct sigaction act; |
| 68 | |
| 69 | act.sa_handler = handler; |
| 70 | act.sa_flags = SA_NODEFER; |
| 71 | sigemptyset(&act.sa_mask); |
| 72 | if (sigaction(SIGINT, &act, 0) == -1) { |
| 73 | perror("Unexpected error while attempting to " |
| 74 | "setup test pre-conditions"); |
| 75 | return PTS_UNRESOLVED; |
| 76 | } |
Garrett Cooper | 2c28215 | 2010-12-16 00:55:50 -0800 | [diff] [blame] | 77 | |
robbiew | 0dc0765 | 2005-06-03 16:29:48 +0000 | [diff] [blame] | 78 | if (raise(SIGINT) == -1) { |
| 79 | perror("Unexpected error while attempting to " |
| 80 | "setup test pre-conditions"); |
| 81 | return PTS_UNRESOLVED; |
| 82 | } |
| 83 | |
| 84 | return PTS_FAIL; |
| 85 | } else { |
Garrett Cooper | 2c28215 | 2010-12-16 00:55:50 -0800 | [diff] [blame] | 86 | int s; |
robbiew | 0dc0765 | 2005-06-03 16:29:48 +0000 | [diff] [blame] | 87 | |
| 88 | /* parent */ |
| 89 | if (wait(&s) == -1) { |
| 90 | perror("Unexpected error while setting up test " |
| 91 | "pre-conditions"); |
| 92 | return PTS_UNRESOLVED; |
| 93 | } |
| 94 | |
| 95 | if (!WEXITSTATUS(s)) { |
| 96 | printf("Test PASSED\n"); |
| 97 | return PTS_PASS; |
| 98 | } |
| 99 | } |
| 100 | |
| 101 | printf("Test FAILED\n"); |
Garrett Cooper | 2c28215 | 2010-12-16 00:55:50 -0800 | [diff] [blame] | 102 | return PTS_FAIL; |
Chris Dearman | ec6edca | 2012-10-17 19:54:01 -0700 | [diff] [blame^] | 103 | } |