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688903eb | 1 | /* Copyright (C) 1994-2018 Free Software Foundation, Inc. |
478b92f0 UD |
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 | |
41bdb6e2 AJ |
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. | |
478b92f0 UD |
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 | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
478b92f0 | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. */ | |
28f540f4 | 17 | |
ae1025be UD |
18 | /* Put the name of the current YP domain in no more than LEN bytes of NAME. |
19 | The result is null-terminated if LEN is large enough for the full | |
20 | name and the terminator. */ | |
21 | ||
439d1d45 RM |
22 | #include <errno.h> |
23 | #include <unistd.h> | |
04ea3b0f | 24 | #include <sys/param.h> |
439d1d45 | 25 | #include <sys/utsname.h> |
3f33a4ce | 26 | #include <string.h> |
28f540f4 | 27 | |
439d1d45 RM |
28 | #if _UTSNAME_DOMAIN_LENGTH |
29 | /* The `uname' information includes the domain name. */ | |
28f540f4 | 30 | |
439d1d45 | 31 | int |
9d46370c | 32 | getdomainname (char *name, size_t len) |
439d1d45 RM |
33 | { |
34 | struct utsname u; | |
04ea3b0f | 35 | size_t u_len; |
28f540f4 | 36 | |
439d1d45 RM |
37 | if (uname (&u) < 0) |
38 | return -1; | |
39 | ||
04ea3b0f UD |
40 | u_len = strlen (u.domainname); |
41 | memcpy (name, u.domainname, MIN (u_len + 1, len)); | |
439d1d45 RM |
42 | return 0; |
43 | } | |
44 | ||
45 | #else | |
ae1025be UD |
46 | |
47 | int | |
9d46370c | 48 | getdomainname (char *name, size_t len) |
ae1025be UD |
49 | { |
50 | __set_errno (ENOSYS); | |
51 | return -1; | |
52 | } | |
53 | ||
54 | stub_warning (getdomainname) | |
55 | ||
439d1d45 | 56 | #endif |
7a8bdff0 RM |
57 | |
58 | libc_hidden_def (getdomainname) |