| /* |
| * |
| * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| |
| /* |
| * NAME |
| * wait401.c |
| * |
| * DESCRIPTION |
| * wait401 - check that a call to wait4() correctly waits for a child |
| * process to exit |
| * |
| * ALGORITHM |
| * loop if that option was specified |
| * fork a child. |
| * issue the system call |
| * check the return value |
| * if return value == -1 |
| * issue a FAIL message, break remaining tests and cleanup |
| * if we are doing functional testing |
| * issue a PASS message if the wait4 call returned the child's pid |
| * else |
| * issue a FAIL message |
| * call cleanup |
| * |
| * USAGE: <for command-line> |
| * wait401 [-c n] [-f] [-e] [-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 John George |
| * -Ported |
| * |
| * Restrictions |
| * none |
| */ |
| |
| #include "test.h" |
| #include "usctest.h" |
| |
| #include <errno.h> |
| #define _USE_BSD |
| #include <sys/types.h> |
| #include <sys/resource.h> |
| #include <sys/wait.h> |
| |
| void cleanup(void); |
| void setup(void); |
| |
| char *TCID= "wait401"; |
| int TST_TOTAL = 1; |
| extern int Tst_count; |
| |
| int main(int ac, char **av) |
| { |
| int lc; /* loop counter */ |
| char *msg; /* message returned from parse_opts */ |
| pid_t pid; |
| int status = 1; |
| struct rusage *rusage = NULL; |
| |
| /* parse standard options */ |
| if ((msg = parse_opts(ac, av, (option_t *) NULL, NULL)) != (char *) NULL) { |
| tst_brkm(TBROK, cleanup, "OPTION PARSING ERROR - %s", msg); |
| } |
| |
| setup(); /* global setup */ |
| |
| /* The following loop checks looping state if -i option given */ |
| |
| for (lc = 0; TEST_LOOPING(lc); lc++) { |
| /* reset Tst_count in case we are looping */ |
| Tst_count = 0; |
| |
| /* |
| * Allocate some space for the rusage structure |
| */ |
| |
| if ((rusage = (struct rusage *)malloc(sizeof(struct rusage))) |
| == NULL) { |
| tst_brkm(TBROK, cleanup, "malloc() failed"); |
| } |
| |
| pid = fork(); |
| |
| if (pid == -1) { |
| tst_brkm(TBROK, cleanup, "fork() failed"); |
| } |
| |
| if (pid == 0) { /* this is the child */ |
| /* |
| * sleep for a moment to let us do the test |
| */ |
| sleep(1); |
| exit(0); |
| } else { /* this is the parent */ |
| |
| /* call wait4 with the TEST() macro */ |
| TEST(wait4(pid, &status, 0, rusage)); |
| } |
| |
| if (TEST_RETURN == -1) { |
| tst_brkm(TFAIL, cleanup, "%s call failed - errno = %d " |
| ": %s", TCID, TEST_ERRNO, strerror(TEST_ERRNO)); |
| } |
| |
| if (STD_FUNCTIONAL_TEST) { |
| /* |
| * The return from this call should be non-zero. |
| */ |
| if (WIFEXITED(status) == 0) { |
| tst_brkm(TFAIL, cleanup, "%s call succeeded but " |
| "WIFEXITED() did not return expected value " |
| "- %d", TCID, WIFEXITED(status)); |
| } else if (TEST_RETURN != pid) { |
| tst_resm(TFAIL, "%s did not return the " |
| "expected value. %d", TCID, |
| TEST_RETURN); |
| } else { |
| |
| tst_resm(TPASS, "Received child pid as expected."); |
| } |
| } |
| tst_resm(TPASS, "%s call succeeded", TCID); |
| |
| /* |
| * Clean up things in case we are looping. |
| */ |
| free(rusage); |
| rusage = NULL; |
| } |
| |
| cleanup(); |
| |
| /*NOTREACHED*/ |
| |
| return(0); |
| |
| } |
| |
| /* |
| * setup() - performs all the ONE TIME setup for this test. |
| */ |
| void |
| setup(void) |
| { |
| /* capture signals */ |
| tst_sig(FORK, DEF_HANDLER, cleanup); |
| |
| /* Pause if that option was specified */ |
| TEST_PAUSE; |
| } |
| |
| /* |
| * cleanup() - performs all the ONE TIME cleanup for this test at completion |
| * or premature exit. |
| */ |
| void |
| cleanup(void) |
| { |
| /* |
| * print timing stats if that option was specified. |
| * print errno log if that option was specified. |
| */ |
| TEST_CLEANUP; |
| |
| /* exit with return code appropriate for results */ |
| tst_exit(); |
| } |
| |