| /* |
| * |
| * 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 |
| * fork03.c |
| * |
| * DESCRIPTION |
| * Check that child can use a large text space and do a large |
| * number of operations. |
| * |
| * ALGORITHM |
| * Fork one process, check for pid == 0 in child. |
| * Check for pid > 0 in parent after wait. |
| * |
| * USAGE |
| * fork03 |
| * |
| * HISTORY |
| * 07/2001 Ported by Wayne Boyer |
| * |
| * RESTRICTIONS |
| * None |
| */ |
| #include <sys/types.h> |
| #include <sys/wait.h> |
| #include <stdio.h> |
| #include "test.h" |
| #include "usctest.h" |
| |
| void setup(void); |
| void cleanup(void); |
| |
| char *TCID = "fork03"; |
| int TST_TOTAL = 1; |
| extern int Tst_count; |
| |
| void setup(void); |
| void cleanup(void); |
| |
| int main(int ac, char **av) |
| { |
| float fl1, fl2; |
| int i; |
| int pid1, pid2, status; |
| |
| int lc; /* loop counter */ |
| char *msg; /* message returned from parse_opts */ |
| |
| /* |
| * parse standard options |
| */ |
| if ((msg = parse_opts(ac, av, (option_t *)NULL, NULL)) != (char *)NULL){ |
| tst_brkm(TBROK, cleanup, "OPTION PARSING ERROR - %s", msg); |
| /*NOTREACHED*/ |
| } |
| |
| /* |
| * perform global setup for the test |
| */ |
| setup(); |
| |
| /* |
| * check 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; |
| |
| if ((pid1 = fork()) == -1) { |
| tst_brkm(TBROK, cleanup, "fork() failed"); |
| } |
| |
| if (pid1 == 0) { /* child */ |
| /* child uses some cpu cycles */ |
| for (i = 1; i < 32767; i++) { |
| fl1 = 0.000001; |
| fl1 = fl2 = 0.000001; |
| fl1 = fl1 * 10.0; |
| fl2 = fl1 / 1.232323; |
| fl1 = fl2 - fl2; |
| fl1 = fl2; |
| } |
| |
| /* Pid must always be zero in child */ |
| |
| if (pid1 != 0) { |
| exit(1); |
| } else { |
| exit(0); |
| } |
| } else { /* parent */ |
| tst_resm(TINFO, "process id in parent of child from " |
| "fork : %d", pid1); |
| pid2 = wait(&status); /* wait for child */ |
| |
| if (pid1 != pid2) { |
| tst_resm(TFAIL, "pids don't match : %d vs %d", |
| pid1, pid2); |
| continue; |
| } |
| |
| if ((status >> 8) != 0) { |
| tst_resm(TFAIL, "child exited with failure"); |
| continue; |
| } |
| |
| tst_resm(TPASS, "test 1 PASSED"); |
| } |
| } |
| cleanup(); |
| |
| /*NOTREACHED*/ |
| return 0; |
| } |
| |
| /* |
| * setup() - performs all ONE TIME setup for this test |
| */ |
| void |
| setup() |
| { |
| /* |
| * capture signals |
| */ |
| tst_sig(FORK, DEF_HANDLER, cleanup); |
| |
| /* |
| * Pause if that option was specified |
| */ |
| TEST_PAUSE; |
| } |
| |
| /* |
| * cleanup() - performs all ONE TIME cleanup for this test at |
| * completion or premature exit |
| */ |
| void |
| cleanup() |
| { |
| /* |
| * print timing stats if that option was specified. |
| * print errno log if that option was specified. |
| */ |
| TEST_CLEANUP; |
| |
| tst_exit(); |
| } |