1 /* vi: set sw=4 ts=4: */
3 * xgetcwd.c -- return current directory with unlimited length
4 * Copyright (C) 1992, 1996 Free Software Foundation, Inc.
5 * Written by David MacKenzie <djm@gnu.ai.mit.edu>.
7 * Special function for busybox written by Vladimir Oleynik <dzo@simtreas.ru>
12 /* Amount to increase buffer size by in each try. */
15 /* Return the current directory, newly allocated, arbitrarily long.
16 Return NULL and set errno on error.
17 If argument is not NULL (previous usage allocate memory), call free()
26 path_max = (unsigned) PATH_MAX;
27 path_max += 2; /* The getcwd docs say to do this. */
30 cwd = xmalloc(path_max);
32 while ((ret = getcwd(cwd, path_max)) == NULL && errno == ERANGE) {
33 path_max += PATH_INCR;
34 cwd = xrealloc(cwd, path_max);
39 bb_perror_msg("getcwd");