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d614a753 | 1 | /* Copyright (C) 2010-2020 Free Software Foundation, Inc. |
c8727fa6 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 | |
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 | |
59ba27a6 | 15 | License along with the GNU C Library; if not, see |
5a82c748 | 16 | <https://www.gnu.org/licenses/>. */ |
c8727fa6 UD |
17 | |
18 | #include <pwd.h> | |
19 | #include <unistd.h> | |
20 | #include <not-cancel.h> | |
21 | ||
22 | #define STATIC static | |
23 | #define getlogin getlogin_fd0 | |
24 | #include <sysdeps/unix/getlogin.c> | |
25 | #undef getlogin | |
26 | ||
27 | ||
28 | /* Return the login name of the user, or NULL if it can't be determined. | |
29 | The returned pointer, if not NULL, is good only until the next call. */ | |
30 | ||
31 | char * | |
32 | getlogin (void) | |
33 | { | |
63c4ed22 UD |
34 | int res = __getlogin_r_loginuid (name, sizeof (name)); |
35 | if (res >= 0) | |
36 | return res == 0 ? name : NULL; | |
c8727fa6 UD |
37 | |
38 | return getlogin_fd0 (); | |
39 | } |