#include <unistd.h>
#include <stdio.h>

long gethostid()
{
	FILE *f;
	unsigned char hostid[4];
	long rv = 0;

	f = fopen("/etc/hostid", "reb");
	if (f) {
		if (fread(hostid, 1, 4, f) == 4) {
			rv = (hostid[3] << 24) | (hostid[2] << 16) | (hostid[1] << 8) | hostid[0];
		}
		fclose(f);
	}

	return rv;
}