diff options
Diffstat (limited to 'testcases/kernel/syscalls/fork/fork03.c')
| -rw-r--r-- | testcases/kernel/syscalls/fork/fork03.c | 144 |
1 files changed, 42 insertions, 102 deletions
diff --git a/testcases/kernel/syscalls/fork/fork03.c b/testcases/kernel/syscalls/fork/fork03.c index 25b36c897..c6381dd67 100644 --- a/testcases/kernel/syscalls/fork/fork03.c +++ b/testcases/kernel/syscalls/fork/fork03.c @@ -1,119 +1,59 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* - * - * 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 + * Copyright (c) International Business Machines Corp., 2001 + * Copyright (c) Linux Test Project, 2003-2023 + * Author: 2001 Ported by Wayne Boyer */ -/* - * 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. +/*\ + *[Description] * - * USAGE - * fork03 - * - * HISTORY - * 07/2001 Ported by Wayne Boyer - * - * RESTRICTIONS - * None + * Check that child process can use a large text space and do a large number + * of operations. In this situation, check for pid == 0 in child and check + * for pid > 0 in parent after wait. */ -#include <sys/types.h> +#include <unistd.h> #include <sys/wait.h> -#include <stdio.h> -#include "test.h" - -char *TCID = "fork03"; -int TST_TOTAL = 1; +#include <stdlib.h> +#include "tst_test.h" -static void setup(void); -static void cleanup(void); - -int main(int ac, char **av) +static void verify_fork(void) { float fl1, fl2; - int i; - int pid1, pid2, status; - - int lc; - - tst_parse_opts(ac, av, NULL, NULL); - - setup(); - - for (lc = 0; TEST_LOOPING(lc); lc++) { - tst_count = 0; - pid1 = fork(); - if (pid1 == -1) - tst_brkm(TBROK, cleanup, "fork() failed"); - - if (pid1 == 0) { - /* 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 { - 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; - } + int pid1, pid2, status, i; + + pid1 = SAFE_FORK(); + if (!pid1) { + /* child uses some cpu time slices */ + 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; + } + exit(!!pid1); + } - if ((status >> 8) != 0) { - tst_resm(TFAIL, "child exited with failure"); - continue; - } + tst_res(TINFO, "process id in parent of child from fork: %d", pid1); + pid2 = SAFE_WAIT(&status); - tst_resm(TPASS, "test 1 PASSED"); - } + if (pid1 != pid2) { + tst_res(TFAIL, "pids don't match: %d vs %d", pid1, pid2); + return; } - cleanup(); - tst_exit(); -} + if ((status >> 8) != 0) { + tst_res(TFAIL, "child exited with failure"); + return; + } -static void setup(void) -{ - tst_sig(FORK, DEF_HANDLER, cleanup); - TEST_PAUSE; + tst_res(TPASS, "test PASSED"); } -static void cleanup(void) -{ -} +static struct tst_test test = { + .test_all = verify_fork, + .forks_child = 1, +}; |