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ee188d55 | 1 | /* Reentrant function to return the current login name. Hurd version. |
b168057a | 2 | Copyright (C) 1996-2015 Free Software Foundation, Inc. |
6d52618b | 3 | This file is part of the GNU C Library. |
ee188d55 | 4 | |
6d52618b | 5 | The GNU C Library is free software; you can redistribute it and/or |
41bdb6e2 AJ |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
ee188d55 | 9 | |
6d52618b UD |
10 | The GNU C Library is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 13 | Lesser General Public License for more details. |
ee188d55 | 14 | |
41bdb6e2 | 15 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
16 | License along with the GNU C Library; if not, see |
17 | <http://www.gnu.org/licenses/>. */ | |
ee188d55 RM |
18 | |
19 | #include <errno.h> | |
20 | #include <unistd.h> | |
21 | #include <hurd.h> | |
22 | #include <string.h> | |
23 | ||
24 | /* Return at most NAME_LEN characters of the login name of the user in NAME. | |
6d52618b | 25 | If it cannot be determined or some other error occurred, return the error |
ee188d55 RM |
26 | code. Otherwise return 0. */ |
27 | int | |
bd2260a2 | 28 | __getlogin_r (char *name, size_t name_len) |
ee188d55 | 29 | { |
b3404dbd | 30 | string_t login; |
ee188d55 RM |
31 | error_t err; |
32 | ||
33 | if (err = __USEPORT (PROC, __proc_getlogin (port, login))) | |
34 | return errno = err; | |
35 | ||
b3404dbd PT |
36 | size_t len = __strnlen (login, sizeof login - 1) + 1; |
37 | if (len > name_len) | |
38 | { | |
39 | errno = ERANGE; | |
40 | return errno; | |
41 | } | |
42 | ||
43 | memcpy (name, login, len); | |
ee188d55 RM |
44 | return 0; |
45 | } | |
5371d99e JM |
46 | libc_hidden_def (__getlogin_r) |
47 | weak_alias (__getlogin_r, getlogin_r) | |
48 | libc_hidden_weak (getlogin_r) |