1 /* xgetcwd.c -- return current directory with unlimited length
2 Copyright (C) 1992 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
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
18 /* Written by David MacKenzie <djm@gnu.ai.mit.edu>. */
29 #include <sys/types.h>
33 #define getcwd(buf, max) getwd (buf)
38 /* Amount to increase buffer size by in each try. */
45 /* Return the current directory, newly allocated, arbitrarily long.
46 Return NULL and set errno on error. */
56 path_max
= (unsigned) PATH_MAX
;
57 path_max
+= 2; /* The getcwd docs say to do this. */
59 cwd
= xmalloc (path_max
);
62 while ((ret
= getcwd (cwd
, path_max
)) == NULL
&& errno
== ERANGE
)
64 path_max
+= PATH_INCR
;
65 cwd
= xrealloc (cwd
, path_max
);
71 int save_errno
= errno
;