| /* |
| * |
| * Copyright (c) International Business Machines Corp., 2001 |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| * the GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| /* |
| * NAME |
| * waitpid01.c |
| * |
| * DESCRIPTION |
| * Check that when a child kills itself by generating an alarm |
| * exception, the waiting parent is correctly notified. |
| * |
| * ALGORITHM |
| * Fork a child that sets an alarm. When the alarm goes off, causing |
| * the death of the child, the parent checks that SIG_ALRM was returned |
| * |
| * USAGE: <for command-line> |
| * waitpid01 [-c n] [-i n] [-I x] [-P x] [-t] |
| * where, -c n : Run n copies concurrently. |
| * -i n : Execute test n times. |
| * -I x : Execute test for x seconds. |
| * -P x : Pause for x seconds between iterations. |
| * -t : Turn on syscall timing. |
| * |
| * History |
| * 07/2001 John George |
| * -Ported |
| * |
| * Restrictions |
| * None |
| */ |
| |
| #include <sys/signal.h> |
| #include <sys/types.h> |
| #include <sys/wait.h> |
| #include <errno.h> |
| #include "test.h" |
| |
| static void setup(void); |
| static void cleanup(void); |
| |
| char *TCID = "waitpid01"; |
| int TST_TOTAL = 1; |
| |
| int main(int argc, char **argv) |
| { |
| int lc; |
| const char *msg; |
| |
| int pid, npid, sig, nsig; |
| int exno, nexno, status; |
| |
| msg = parse_opts(argc, argv, NULL, NULL); |
| if (msg != NULL) |
| tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
| |
| setup(); |
| |
| /* check for looping state if -i option is given */ |
| for (lc = 0; TEST_LOOPING(lc); lc++) { |
| /* reset tst_count in case we are looping */ |
| tst_count = 0; |
| |
| exno = 1; |
| sig = 14; |
| |
| pid = FORK_OR_VFORK(); |
| if (pid < 0) { |
| tst_brkm(TFAIL, cleanup, "Fork Failed"); |
| } else if (pid == 0) { |
| alarm(2); |
| pause(); |
| exit(exno); |
| } else { |
| errno = 0; |
| while (((npid = waitpid(pid, &status, 0)) != -1) || |
| (errno == EINTR)) { |
| if (errno == EINTR) |
| continue; |
| |
| if (npid != pid) { |
| tst_resm(TFAIL, "waitpid error: " |
| "unexpected pid returned"); |
| } else { |
| tst_resm(TPASS, |
| "recieved expected pid"); |
| } |
| |
| nsig = WTERMSIG(status); |
| |
| /* |
| * nsig is the signal number returned by |
| * waitpid |
| */ |
| if (nsig != sig) { |
| tst_resm(TFAIL, "waitpid error: " |
| "unexpected signal " |
| "returned"); |
| } else { |
| tst_resm(TPASS, "recieved expected " |
| "signal"); |
| } |
| |
| /* |
| * nexno is the exit number returned by |
| * waitpid |
| */ |
| nexno = WEXITSTATUS(status); |
| if (nexno != 0) { |
| tst_resm(TFAIL, "signal error: " |
| "unexpected exit number " |
| "returned"); |
| } |
| } |
| } |
| } |
| |
| cleanup(); |
| tst_exit(); |
| } |
| |
| static void setup(void) |
| { |
| TEST_PAUSE; |
| } |
| |
| static void cleanup(void) |
| { |
| tst_sig(FORK, DEF_HANDLER, cleanup); |
| } |