1 /* xgetdomainname.c -- Return the NIS domain name, without size limitations.
2 Copyright (C) 1992, 1996, 2000, 2001, 2003 Free Software Foundation, Inc.
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2, or (at your option)
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software Foundation,
16 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
18 /* Based on xgethostname.c, written by Jim Meyering. */
25 #include "xgetdomainname.h"
27 /* Get getdomainname. */
28 #include "getdomainname.h"
35 #ifndef INITIAL_DOMAINNAME_LENGTH
36 # define INITIAL_DOMAINNAME_LENGTH 34
39 /* Return the NIS domain name of the machine, in malloc'd storage.
40 WARNING! The NIS domain name is unrelated to the fully qualified host name
41 of the machine. It is also unrelated to email addresses.
42 WARNING! The NIS domain name is usually the empty string or "(none)" when
44 If malloc fails, exit.
45 Upon any other failure, set errno and return NULL. */
52 size = INITIAL_DOMAINNAME_LENGTH;
53 domainname = xmalloc (size);
61 err = getdomainname (domainname, size);
62 if (err >= 0 && domainname[k] == '\0')
64 else if (err < 0 && errno != EINVAL)
66 int saved_errno = errno;
72 domainname = xrealloc (domainname, size);