diff options
author | Roland McGrath <roland@gnu.org> | 1992-03-24 05:28:55 +0000 |
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committer | Roland McGrath <roland@gnu.org> | 1992-03-24 05:28:55 +0000 |
commit | 516fdd7bd9482fdd2c2c5cdd433501575f8a7fd7 (patch) | |
tree | a18087320cfa25986cd6195c42b4a94ccb0136a7 /io | |
parent | 172f3e5d2444e827d22596dab4726eed90de4f3e (diff) |
Initial revision
Diffstat (limited to 'io')
-rw-r--r-- | io/getdirname.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/io/getdirname.c b/io/getdirname.c new file mode 100644 index 0000000000..707380e43d --- /dev/null +++ b/io/getdirname.c @@ -0,0 +1,45 @@ +/* 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); +} |