| /* |
| * |
| * 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 |
| */ |
| |
| /* |
| * Test Name: alarm07 |
| * |
| * Test Description: |
| * Check the functionality of the alarm() when the time input |
| * parameter is non-zero and the process does a fork. |
| * |
| * Expected Result: |
| * The alarm request should be cleared in the child process. |
| * |
| * Algorithm: |
| * Setup: |
| * Setup signal handling. |
| * Pause for SIGUSR1 if option specified. |
| * |
| * Test: |
| * Loop if the proper options are given. |
| * Execute system call |
| * Check return code, if system call failed (return=-1) |
| * Log the errno and Issue a FAIL message. |
| * Otherwise, |
| * Verify the Functionality of system call |
| * if successful, |
| * Issue Functionality-Pass message. |
| * Otherwise, |
| * Issue Functionality-Fail message. |
| * Cleanup: |
| * Print errno log and/or timing stats if options given |
| * |
| * Usage: <for command-line> |
| * alarm07 [-c n] [-f] [-i n] [-I x] [-P x] [-t] |
| * where, -c n : Run n copies concurrently. |
| * -f : Turn off functionality Testing. |
| * -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 Ported by Wayne Boyer |
| * |
| * RESTRICTIONS: |
| * None. |
| */ |
| |
| #include <stdio.h> |
| #include <unistd.h> |
| #include <sys/types.h> |
| #include <errno.h> |
| #include <string.h> |
| #include <signal.h> |
| #include <sys/wait.h> |
| |
| #include "test.h" |
| |
| char *TCID = "alarm07"; |
| int TST_TOTAL = 1; |
| int alarms_received = 0; |
| |
| void setup(); |
| void cleanup(); |
| void sigproc(int sig); |
| |
| int main(int ac, char **av) |
| { |
| int lc; |
| const char *msg; |
| int sleep_time = 5; |
| int status; |
| int time_sec = 3; |
| pid_t cpid; |
| |
| if ((msg = parse_opts(ac, av, NULL, NULL)) != NULL) |
| tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
| |
| setup(); |
| |
| for (lc = 0; TEST_LOOPING(lc); lc++) { |
| |
| tst_count = 0; |
| |
| /* |
| * Call First alarm() with non-zero time parameter |
| * 'time_sec' to send SIGALRM to the process. |
| */ |
| TEST(alarm(time_sec)); |
| |
| /* Now, fork a child process */ |
| cpid = FORK_OR_VFORK(); |
| if (cpid < 0) { |
| tst_resm(TFAIL | TERRNO, "fork() failed"); |
| } |
| |
| sleep(sleep_time); |
| |
| if (cpid == 0) { |
| if (alarms_received == 0) |
| exit(0); |
| else { |
| printf("alarm request not cleared in " |
| "child; alarms received:%d\n", |
| alarms_received); |
| exit(1); |
| } |
| } else { |
| /* Wait for child to complete execution */ |
| if (wait(&status) == -1) |
| tst_brkm(TBROK | TERRNO, cleanup, |
| "wait failed"); |
| if (!WIFEXITED(status) || |
| WEXITSTATUS(status) != 0) |
| tst_brkm(TBROK | TERRNO, cleanup, |
| "child exited abnormally"); |
| } |
| } |
| |
| cleanup(); |
| tst_exit(); |
| } |
| |
| /* |
| * setup() - performs all ONE TIME setup for this test. |
| * Setup signal handler to catch SIGALRM signal. |
| */ |
| void setup(void) |
| { |
| |
| tst_sig(FORK, DEF_HANDLER, cleanup); |
| |
| TEST_PAUSE; |
| |
| /* Set the signal catching function */ |
| if (signal(SIGALRM, sigproc) == SIG_ERR) { |
| tst_brkm(TFAIL | TERRNO, cleanup, "signal(SIGALRM, ..) failed"); |
| } |
| } |
| |
| /* |
| * sigproc(int) - This function defines the action that has to be taken |
| * when the SIGALRM signal is caught. |
| * It also sets the variable which is used to check whether the |
| * alarm system call was successful. |
| */ |
| void sigproc(int sig) |
| { |
| alarms_received++; |
| } |
| |
| /* |
| * cleanup() - performs all ONE TIME cleanup for this test at |
| * completion or premature exit. |
| */ |
| void cleanup(void) |
| { |
| } |