| /* |
| |
| * 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 assertion #17 by verifying that select returns -1 with |
| errno set to EINTR if a handler for the SIGHUP signal is setup with |
| the SA_RESTART flag cleared. |
| * 12/18/02 - Adding in include of sys/time.h per |
| * rodrigc REMOVE-THIS AT attbi DOT com input that it needs |
| * to be included whenever the timeval struct is used. |
| */ |
| |
| #include <signal.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <sys/select.h> |
| #include <sys/wait.h> |
| #include <sys/time.h> |
| #include <sys/types.h> |
| #include <unistd.h> |
| #include <errno.h> |
| #include "posixtest.h" |
| |
| volatile sig_atomic_t wakeup = 1; |
| |
| void handler(int signo) |
| { |
| printf("Caught SIGHUP\n"); |
| wakeup++; |
| } |
| |
| int main() |
| { |
| pid_t pid; |
| struct timeval tv; |
| |
| if ((pid = fork()) == 0) { |
| /* child */ |
| struct sigaction act; |
| |
| act.sa_handler = handler; |
| act.sa_flags = 0; |
| sigemptyset(&act.sa_mask); |
| sigaction(SIGHUP, &act, 0); |
| |
| while (wakeup == 1) { |
| tv.tv_sec = 3; |
| tv.tv_usec = 0; |
| if (select(0, NULL, NULL, NULL, &tv) == -1 && |
| errno == EINTR) { |
| perror("select"); |
| return PTS_PASS; |
| } |
| } |
| |
| return PTS_FAIL; |
| } else { |
| /* parent */ |
| int s; |
| |
| /* |
| There is a race condition between the parent |
| process sending the SIGHUP signal, and the |
| child process being inside the 'select' function |
| call. |
| |
| I could not find a pure POSIX method for determining |
| the state of the child process, so I just added a delay |
| so that the test is valid in most conditions. (The |
| problem is that it would be perfectly legal for a |
| POSIX conformant OS to not schedule the child process |
| for a long time.) |
| */ |
| tv.tv_sec = 1; |
| tv.tv_usec = 0; |
| select(0, NULL, NULL, NULL, &tv); |
| |
| kill(pid, SIGHUP); |
| waitpid(pid, &s, 0); |
| if (WEXITSTATUS(s) == PTS_PASS) { |
| printf("Test PASSED\n"); |
| return PTS_PASS; |
| } |
| } |
| |
| printf("Test FAILED\n"); |
| return PTS_FAIL; |
| } |