#include <errno.h>
#include <fcntl.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <wait.h>

#include <sys/stat.h>
#include <sys/types.h>

void do_nothing(int sig)
{
}


int main(int argc, char *argv[])
{
	char buf[4096];
	int res, ppid;
	struct sigaction act;

	srand(time(NULL));

	act.sa_handler = do_nothing;
	act.sa_flags = SA_RESTART;
	
	sigaction(SIGTERM, &act, NULL);

	switch (fork()) {
		case -1:
			printf("[parent] fork() failed: %s", strerror(errno));
			break;
		default:
			printf("[parent] child created, making files...\n");
			for (;;) {
				snprintf(buf, sizeof(buf), "leak.%08x", (unsigned int)rand());
				printf("open '%s'...\n", buf);fflush(stdout);
				if ((res = open(buf, O_WRONLY|O_CREAT, 0666)) < 0) {
					perror("open()");
				}
				close(res);
			}
			printf("[parent] exiting -- whoops?  I should've been killed...\n");
			break;
		case 0:
			printf("[child] repeatedly killing parent\n");
			ppid = getppid();
			for (;;) {
				if (kill(ppid, SIGTERM) < 0) {
					printf("[child] failed to kill parent, exiting...\n");
					break;
				}
				usleep(10000L);
			}
			break;
	}
	
	return 0;
}