1 /* xgetwd.c -- return current directory with unlimited length
2 Copyright (C) 1992, 1997 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 /* Derived from xgetcwd.c in e.g. the GNU sh-utils. */
28 #include <sys/types.h>
30 /* Amount by which to increase buffer size when allocating more space. */
36 /* Return the current directory, newly allocated, arbitrarily long.
37 Return NULL and set errno on error. */
47 path_max = (unsigned) PATH_MAX;
48 path_max += 2; /* The getcwd docs say to do this. */
50 cwd = xmalloc (path_max);
53 while ((ret = getcwd (cwd, path_max)) == NULL && errno == ERANGE)
55 path_max += PATH_INCR;
56 cwd = xrealloc (cwd, path_max);
62 int save_errno = errno;