58 lines
1.1 KiB
C
58 lines
1.1 KiB
C
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// SPDX-License-Identifier: GPL-2.0-only
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/*
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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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/*\
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* [Description]
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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 <stdlib.h>
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#include <sched.h>
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#include "tst_test.h"
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#include "clone_platform.h"
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static volatile int child_exited;
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static void *child_stack;
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static int child_fn(void *unused LTP_ATTRIBUTE_UNUSED)
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{
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int i;
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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(0);
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}
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static void verify_clone(void)
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{
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child_exited = 0;
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TST_EXP_PID_SILENT(ltp_clone(CLONE_VM | CLONE_VFORK | SIGCHLD, child_fn, NULL,
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CHILD_STACK_SIZE, child_stack), "clone with vfork");
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if (!TST_PASS)
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return;
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TST_EXP_VAL(child_exited, 1);
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}
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static struct tst_test test = {
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.test_all = verify_clone,
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.bufs = (struct tst_buffers []) {
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{&child_stack, .size = CHILD_STACK_SIZE},
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{},
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},
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};
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