#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <sched.h>

struct args {
	char body[1024];
	char ptr[0];
};


static i = 0;

static int ns_exec(void *_arg)
{
	pid_t pid;
	int status;
	struct args *args = malloc(sizeof(struct args));

	if (args == NULL) {
		printf("Can't allocate memory\n");
		return 1;
	}

	if (i++ > 4000)
		return 0;

	pid = clone(ns_exec, args->ptr,
			CLONE_NEWPID | CLONE_VM | SIGCHLD, NULL);
	if (pid == -1) {
		printf("clone() failed: %m\n");
		return 1;
	}

	while (1)
		sleep(1000);

	return 0;
}

int main(int argc, char **argv)
{
	ns_exec(NULL);
	return 0;
}