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/* Copyright (C) 1993-2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <unistd.h>
#include <hurd.h>
#include "hurdhost.h"
#include <_itoa.h>
/* Set the current machine's Internet number to ID.
This call is restricted to the super-user. */
/* XXX should be __sethostid?
isn't hostid supposed to be hardwired and unchangeable? */
int
sethostid (long int id)
{
char buf[8], *bp;
ssize_t n;
/* The hostid is kept in the file /etc/hostid,
eight characters of upper-case hexadecimal. */
bp = _itoa_word (id, &buf[sizeof buf], 16, 1);
while (bp > buf)
*--bp = '0';
n = _hurd_set_host_config ("/etc/hostid", buf, sizeof buf);
return n < 0 ? -1 : 0;
}
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