1 | /* Copyright (C) 2001-2022 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 <errno.h> |
19 | #include <string.h> |
20 | #include <unistd.h> |
21 | |
22 | #include <sysdep.h> |
23 | #include <sys/syscall.h> |
24 | |
25 | int |
26 | __gethostname (char *name, size_t len) |
27 | { |
28 | int result; |
29 | |
30 | result = INLINE_SYSCALL (gethostname, 2, name, len); |
31 | |
32 | if (result == 0 |
33 | /* See whether the string is terminated. If not we will return |
34 | an error. */ |
35 | && memchr (name, '\0', len) == NULL) |
36 | { |
37 | __set_errno (EOVERFLOW); |
38 | result = -1; |
39 | } |
40 | |
41 | return result; |
42 | } |
43 | |
44 | weak_alias (__gethostname, gethostname) |
45 | |