/* * 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 #4 of the sigaction system call that shows that attempting to add SIGSTOP can not be added to the signal mask for a signal handler. Steps: 1. Fork a new process 2. (parent) wait for child 3. (child) Setup a signal handler for SIGQUIT with SIGSTOP added to the signal mask 4. (child) raise SIGQUIT 5. (child, signal handler) raise SIGSTOP 5. (child) If still around then return -1 6. (parent - returning from wait) If child was stopped then return kill the child and return success, otherwise fail. */ #include #include #include #include #include #include #include "posixtest.h" void handler(int signo) { printf("About to stop child\n"); raise(SIGSTOP); printf("Child has continued\n"); exit(0); } int main(void) { pid_t pid; if ((pid = fork()) == 0) { /* child */ struct sigaction act; act.sa_handler = handler; act.sa_flags = 0; sigemptyset(&act.sa_mask); sigaddset(&act.sa_mask, SIGSTOP); if (sigaction(SIGQUIT, &act, 0) == -1) { perror("Unexpected error while attempting to " "setup test pre-conditions"); return PTS_UNRESOLVED; } if (raise(SIGQUIT) == -1) { perror("Unexpected error while attempting to " "setup test pre-conditions"); } return PTS_UNRESOLVED; } else { int s; /* parent */ if (waitpid(pid, &s, WUNTRACED) == -1) { perror("Unexpected error while setting up test " "pre-conditions"); return PTS_UNRESOLVED; } if (WIFSTOPPED(s)) { printf("Test PASSED\n"); kill(pid, SIGKILL); return PTS_PASS; } } printf("Test FAILED\n"); return PTS_FAIL; }