This is xnu-11215.1.10. See this file in:
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 * Copyright (c) 2017-2024 Apple Inc. All rights reserved.
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 * Please obtain a copy of the License at
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#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <assert.h>
#include <darwintest.h>
#include "skywalk_test_driver.h"
#include "skywalk_test_common.h"

/****************************************************************/

static int
skt_mp100noop_main(int argc, char *argv[])
{
	char buf[1] = { 0 };
	assert(!strcmp(argv[3], "--child"));
	ssize_t ret;

	if ((ret = write(MPTEST_SEQ_FILENO, buf, sizeof(buf))) == -1) {
		SKT_LOG("write fail: %s", strerror(errno));
		return 1;
	}
	assert(ret == 1);

	/* Wait for go signal */
	if ((ret = read(MPTEST_SEQ_FILENO, buf, sizeof(buf))) == -1) {
		SKT_LOG("read fail: %s", strerror(errno));
		return 1;
	}
	assert(ret == 1);

	return 0;
}

struct skywalk_mptest skt_mp100noop = {
	"mp100noop", "test just returns true from 100 children", 0, 100, skt_mp100noop_main,
};