#include <dirent.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>

#define _GNU_SOURCE
#define _FILE_OFFSET_BITS 64
#define __USE_FILE_OFFSET64

int
main (int argc, char *argv[])
{
	DIR *d;
	struct dirent *ent = NULL;
	char buf[sizeof(*ent)+256];

	if (argc != 2) {
		fprintf (stderr, "Usage: %s <dirname>\n", argv[0]);
		return 1;
	}

	d = opendir (argv[1]);
	if (!d) {
		fprintf (stderr, "%s: %s\n", argv[1], strerror (errno));
		return 1;
	}

	for (;;) {
		ent = NULL;
		readdir_r (d, (void *)buf, &ent);
		if (!ent)
			break;
		printf ("%s: %llu (%llu)\n", ent->d_name, ent->d_off, telldir (d));
	}

	return 0;
}