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- /* Copyright (C) 1992 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If
- not, write to the Free Software Foundation, Inc., 675 Mass Ave,
- Cambridge, MA 02139, USA. */
-
- #include <ansidecl.h>
- #include <unistd.h>
- #include <sys/stat.h>
- #include <stdlib.h>
- #include <string.h>
-
- /* Return a malloc'd string containing the current directory name.
- If the environment variable `PWD' is set, and its value is correct,
- that value is used. */
-
- char *
- DEFUN_VOID(get_current_dir_name)
- {
- char *pwd;
- struct stat dotstat, pwdstat;
-
- pwd = getenv ("PWD");
- if (pwd != NULL &&
- stat (".", &dotstat) == 0 &&
- stat (pwd, &pwdstat) == 0 &&
- pwdstat.st_dev == dotstat.st_dev &&
- pwdstat.st_ino == dotstat.st_ino)
- /* The PWD value is correct. Use it. */
- return strdup (pwd);
-
- return getcwd ((char *) NULL, 0);
- }
-