1 /* xgetcwd.c -- return current directory with unlimited length
2 Copyright (C) 1992, 1996 Free Software Foundation, Inc.
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2, or (at your option)
9 This program 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
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software Foundation,
16 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
18 /* Written by David MacKenzie <djm@gnu.ai.mit.edu>. */
30 #include <sys/types.h>
37 # define getcwd(Buf, Max) getwd (Buf)
40 /* Amount to increase buffer size by in each try. */
47 /* Return the current directory, newly allocated, arbitrarily long.
48 Return NULL and set errno on error. */
58 path_max = (unsigned) PATH_MAX;
59 path_max += 2; /* The getcwd docs say to do this. */
61 cwd = xmalloc (path_max);
64 while ((ret = getcwd (cwd, path_max)) == NULL && errno == ERANGE)
66 path_max += PATH_INCR;
67 cwd = xrealloc (cwd, path_max);
73 int save_errno = errno;