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/* Copyright (C) 2003 Red Hat, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, version 2,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*
*/
#include <fcntl.h>
#include <stdlib.h>
#include <time.h>
#include <unistd.h>
#include <sys/stat.h>
int
main (void)
{
struct stat st;
long int n;
if (stat ("/etc/hostid", &st) == 0 && S_ISREG (st.st_mode)
&& st.st_size >= sizeof (n))
return 0;
int fd = open ("/dev/random", O_RDONLY);
if (fd == -1 || read (fd, &n, sizeof (n)) != sizeof (n))
{
srand48 ((long int) time (NULL) ^ (long int) getpid ());
n = lrand48 ();
}
return sethostid (n);
}
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