#include <stdlib.h>
#include <stdio.h>
#include <dirent.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <sys/param.h>
#include <utmp.h>
#include <pwd.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <signal.h>
#include <syslog.h>
#include <errno.h>
#include <stdarg.h>
#include <ctype.h>

#define NUM_CHILDREN 1000

findme(i)
int i;
{
	DIR * dir = NULL;
	struct dirent *d;
	int pid;
	int mypid;

	mypid = getpid();


	if ((dir = opendir("/proc")) == (DIR *)0)
	{
		perror("failed to open /proc\n");
		exit(1);
	}

	while((d = readdir(dir)) != (struct dirent *)0) {
        	if ((pid = (pid_t)atoi(d->d_name)) == 0) continue;
		if (pid==mypid) return(1);
	}
	printf("\nfailed to find myself: pid %d, iteration %d\n",mypid,i);
	return(0);
}

fork_child(i)
int i;
{
    int pid;

    switch ((pid = fork())) {
    case 0:   /* child */
	sleep(1);
	findme(i);
	exit(0);
	;;
    case -1:  /* error */
	perror("failed to fork\n");
	exit(1);
	;;
    default:  /* parent */
	;;
   }
	
}


main()
{
	int i;
        (void)signal(SIGCHLD, SIG_IGN);


	for (i=0; i<NUM_CHILDREN; i++)
	{
		fork_child(i);
	}

}