1 | /* Copyright (C) 2010-2020 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 <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 | { |
34 | int res = __getlogin_r_loginuid (name, sizeof (name)); |
35 | if (res >= 0) |
36 | return res == 0 ? name : NULL; |
37 | |
38 | return getlogin_fd0 (); |
39 | } |
40 | |