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688903eb | 1 | /* Copyright (C) 1992-2018 Free Software Foundation, Inc. |
c84142e8 | 2 | This file is part of the GNU C Library. |
28f540f4 | 3 | |
c84142e8 | 4 | The GNU C Library is free software; you can redistribute it and/or |
41bdb6e2 AJ |
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. | |
28f540f4 | 8 | |
c84142e8 UD |
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 | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
28f540f4 | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. */ | |
28f540f4 | 17 | |
28f540f4 | 18 | #include <unistd.h> |
cc3fa755 | 19 | #include <include/sys/stat.h> |
28f540f4 RM |
20 | #include <stdlib.h> |
21 | #include <string.h> | |
22 | ||
23 | /* Return a malloc'd string containing the current directory name. | |
24 | If the environment variable `PWD' is set, and its value is correct, | |
25 | that value is used. */ | |
26 | ||
27 | char * | |
c84142e8 | 28 | get_current_dir_name (void) |
28f540f4 RM |
29 | { |
30 | char *pwd; | |
8edf6e0d | 31 | struct stat64 dotstat, pwdstat; |
28f540f4 RM |
32 | |
33 | pwd = getenv ("PWD"); | |
8edf6e0d UD |
34 | if (pwd != NULL |
35 | && stat64 (".", &dotstat) == 0 | |
36 | && stat64 (pwd, &pwdstat) == 0 | |
37 | && pwdstat.st_dev == dotstat.st_dev | |
38 | && pwdstat.st_ino == dotstat.st_ino) | |
28f540f4 | 39 | /* The PWD value is correct. Use it. */ |
50304ef0 | 40 | return __strdup (pwd); |
28f540f4 | 41 | |
50304ef0 | 42 | return __getcwd ((char *) NULL, 0); |
28f540f4 | 43 | } |