| 1 | /* Copyright (C) 2017-2024 Free Software Foundation, Inc. |
|---|---|
| 2 | This file is part of the GNU C Library. |
| 3 | |
| 4 | The GNU C Library is free software; you can redistribute it and/or |
| 5 | modify it under the terms of the GNU Lesser General Public |
| 6 | License as published by the Free Software Foundation; either |
| 7 | version 2.1 of the License, or (at your option) any later version. |
| 8 | |
| 9 | The GNU C Library 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 GNU |
| 12 | Lesser General Public License for more details. |
| 13 | |
| 14 | You should have received a copy of the GNU Lesser General Public |
| 15 | License along with the GNU C Library; if not, see |
| 16 | <https://www.gnu.org/licenses/>. */ |
| 17 | |
| 18 | #include <stdlib.h> |
| 19 | #include <string.h> |
| 20 | #include <errno.h> |
| 21 | #include <unistd.h> |
| 22 | #include <libc-lock.h> |
| 23 | #include "nisdomain.h" |
| 24 | |
| 25 | #define MAXDOMAINNAMELEN 1024 |
| 26 | |
| 27 | static char domainname[MAXDOMAINNAMELEN]; |
| 28 | |
| 29 | __libc_lock_define_initialized (static, domainname_lock) |
| 30 | |
| 31 | int |
| 32 | __nss_get_default_domain (char **outdomain) |
| 33 | { |
| 34 | int result = 0; |
| 35 | *outdomain = NULL; |
| 36 | |
| 37 | __libc_lock_lock (domainname_lock); |
| 38 | |
| 39 | if (domainname[0] != '\0') |
| 40 | { |
| 41 | if (getdomainname (name: domainname, MAXDOMAINNAMELEN) < 0) |
| 42 | result = errno; |
| 43 | else if (strcmp (s1: domainname, s2: "(none)") == 0) |
| 44 | { |
| 45 | /* If domainname is not set, some systems will return "(none)" */ |
| 46 | domainname[0] = '\0'; |
| 47 | result = ENOENT; |
| 48 | } |
| 49 | else |
| 50 | *outdomain = domainname; |
| 51 | } |
| 52 | else |
| 53 | *outdomain = domainname; |
| 54 | |
| 55 | __libc_lock_unlock (domainname_lock); |
| 56 | |
| 57 | return result; |
| 58 | } |
| 59 |