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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);
}
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