| /* |
| |
| * Copyright (c) 2002-2003, Intel Corporation. All rights reserved. |
| * Created by: rusty.lynch REMOVE-THIS AT intel DOT com |
| * This file is licensed under the GPL license. For the full content |
| * of this license, see the COPYING file at the top level of this |
| * source tree. |
| |
| Test case for assertion #22 of the sigaction system call that verifies |
| that if the SA_NODEFER flag is set for a given signal, then when the |
| sa_sigaction signal-catching function is entered, then the signal that |
| was caught is not added to the signal mask by raising that signal in the |
| signal handler and verifying that the handler is reentered. |
| |
| Steps: |
| 1. Fork a new process |
| 2. (parent) wait for child |
| 3. (child) Setup a signal handler for SIGPROF with SA_NODEFER set |
| in the sa_flags field |
| 4. (child) raise SIGPROF |
| 5. (child, signal handler) increment handler count |
| 6. (child, signal handler) if count is 1 then raise SIGPROF |
| 7. (child, signal handler) if count is 1 then set error variable |
| 8. (child) if error is set then return -1, else return 0 |
| 6. (parent - returning from wait) If child returned 0 then exit 0, |
| otherwise exit -1. |
| */ |
| |
| #define _XOPEN_SOURCE 600 |
| |
| #include <signal.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <sys/wait.h> |
| #include <unistd.h> |
| #include "posixtest.h" |
| |
| int handler_count = 0; |
| |
| void handler(int signo) |
| { |
| static int inside_handler = 0; |
| |
| printf("SIGPROF caught\n"); |
| if (inside_handler) { |
| printf("Signal caught while inside handler\n"); |
| exit(0); |
| } |
| |
| inside_handler++; |
| handler_count++; |
| |
| if (handler_count == 1) { |
| printf("Raising SIGPROF\n"); |
| raise(SIGPROF); |
| printf("Returning from raising SIGPROF\n"); |
| } |
| |
| inside_handler--; |
| } |
| |
| int main(void) |
| { |
| if (fork() == 0) { |
| /* child */ |
| |
| struct sigaction act; |
| |
| act.sa_handler = handler; |
| act.sa_flags = SA_NODEFER; |
| sigemptyset(&act.sa_mask); |
| if (sigaction(SIGPROF, &act, 0) == -1) { |
| perror("Unexpected error while attempting to " |
| "setup test pre-conditions"); |
| return PTS_UNRESOLVED; |
| } |
| |
| if (raise(SIGPROF) == -1) { |
| perror("Unexpected error while attempting to " |
| "setup test pre-conditions"); |
| return PTS_UNRESOLVED; |
| } |
| |
| return PTS_FAIL; |
| } else { |
| int s; |
| |
| /* parent */ |
| if (wait(&s) == -1) { |
| perror("Unexpected error while setting up test " |
| "pre-conditions"); |
| return PTS_UNRESOLVED; |
| } |
| |
| if (!WEXITSTATUS(s)) { |
| printf("Test PASSED\n"); |
| return PTS_PASS; |
| } |
| } |
| |
| printf("Test FAILED\n"); |
| return PTS_FAIL; |
| } |