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2b778ceb | 1 | /* Copyright (C) 2001-2021 Free Software Foundation, Inc. |
19635181 | 2 | This file is part of the GNU C Library. |
19635181 UD |
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 | |
ab84e3ff | 15 | License along with the GNU C Library. If not, see |
5a82c748 | 16 | <https://www.gnu.org/licenses/>. */ |
19635181 | 17 | |
8c2b0506 | 18 | #include <errno.h> |
19635181 UD |
19 | #include <string.h> |
20 | #include <unistd.h> | |
21 | ||
22 | #include <sysdep.h> | |
23 | #include <sys/syscall.h> | |
19635181 | 24 | |
19635181 UD |
25 | int |
26 | __gethostname (char *name, size_t len) | |
27 | { | |
28 | int result; | |
29 | ||
a2da1673 | 30 | result = INLINE_SYSCALL (gethostname, 2, name, len); |
19635181 UD |
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) |