104 lines
2.2 KiB
C
104 lines
2.2 KiB
C
/*
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* Copyright (c) Wipro Technologies Ltd, 2002. All Rights Reserved.
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* Copyright (c) 2012 Wanlong Gao <gaowanlong@cn.fujitsu.com>
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* Copyright (c) 2012 Cyril Hrubis <chrubis@suse.cz>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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*/
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/*
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* Call clone() with CLONE_VFORK flag set. verify that
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* execution of parent is suspended until child finishes
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*/
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#define _GNU_SOURCE
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#include <errno.h>
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#include <sched.h>
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#include <sys/wait.h>
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#include "test.h"
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#include "clone_platform.h"
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char *TCID = "clone05";
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int TST_TOTAL = 1;
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static void setup(void);
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static void cleanup(void);
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static int child_fn(void *);
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static int child_exited = 0;
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int main(int ac, char **av)
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{
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int lc, status;
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void *child_stack;
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tst_parse_opts(ac, av, NULL, NULL);
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setup();
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child_stack = malloc(CHILD_STACK_SIZE);
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if (child_stack == NULL)
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tst_brkm(TBROK, cleanup, "Cannot allocate stack for child");
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for (lc = 0; TEST_LOOPING(lc); lc++) {
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tst_count = 0;
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TEST(ltp_clone(CLONE_VM | CLONE_VFORK | SIGCHLD, child_fn, NULL,
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CHILD_STACK_SIZE, child_stack));
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if ((TEST_RETURN != -1) && (child_exited))
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tst_resm(TPASS, "Test Passed");
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else
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tst_resm(TFAIL, "Test Failed");
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if ((wait(&status)) == -1)
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tst_brkm(TBROK | TERRNO, cleanup,
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"wait failed, status: %d", status);
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child_exited = 0;
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}
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free(child_stack);
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cleanup();
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tst_exit();
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}
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static void setup(void)
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{
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tst_sig(FORK, DEF_HANDLER, cleanup);
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TEST_PAUSE;
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}
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static void cleanup(void)
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{
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}
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static int child_fn(void *unused __attribute__((unused)))
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{
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int i;
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/* give the kernel scheduler chance to run the parent */
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for (i = 0; i < 100; i++) {
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sched_yield();
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usleep(1000);
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}
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child_exited = 1;
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_exit(1);
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}
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