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