| /* Copyright (C) 2017-2018 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/>. */ |
| |
| #include <stdlib.h> |
| #include <string.h> |
| #include <errno.h> |
| #include <unistd.h> |
| #include <libc-lock.h> |
| #include "nisdomain.h" |
| |
| #define MAXDOMAINNAMELEN 1024 |
| |
| static char domainname[MAXDOMAINNAMELEN]; |
| |
| __libc_lock_define_initialized (static, domainname_lock) |
| |
| int |
| __nss_get_default_domain (char **outdomain) |
| { |
| int result = 0; |
| *outdomain = NULL; |
| |
| __libc_lock_lock (domainname_lock); |
| |
| if (domainname[0] != '\0') |
| { |
| if (getdomainname (domainname, MAXDOMAINNAMELEN) < 0) |
| result = errno; |
| else if (strcmp (domainname, "(none)") == 0) |
| { |
| /* If domainname is not set, some systems will return "(none)" */ |
| domainname[0] = '\0'; |
| result = ENOENT; |
| } |
| else |
| *outdomain = domainname; |
| } |
| else |
| *outdomain = domainname; |
| |
| __libc_lock_unlock (domainname_lock); |
| |
| return result; |
| } |