/* Copyright (C) 1994-2018 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/>.  */

/* Put the name of the current YP domain in no more than LEN bytes of NAME.

   The result is null-terminated if LEN is large enough for the full

   name and the terminator.  */

#include <errno.h>

#include <unistd.h>

#include <sys/param.h>

#include <sys/utsname.h>

#include <string.h>

#if _UTSNAME_DOMAIN_LENGTH

/* The `uname' information includes the domain name.  */

int

getdomainname (char *name, size_t len)

{

  struct utsname u;

  size_t u_len;

  if (uname (&u) < 0)

    return -1;

  u_len = strlen (u.domainname);

  memcpy (name, u.domainname, MIN (u_len + 1, len));

  return 0;

}

#else

int

getdomainname (char *name, size_t len)

{

  __set_errno (ENOSYS);

  return -1;

}

stub_warning (getdomainname)

#endif

libc_hidden_def (getdomainname)