1 /* vi: set sw=4 ts=4: */
3 * Mini readlink implementation for busybox
5 * Copyright (C) 2000,2001 Matt Kraai <kraai@alumni.carnegiemellon.edu>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
29 #ifdef CONFIG_FEATURE_READLINK_FOLLOW
30 # define READLINK_FOLLOW "f"
31 # define READLINK_FLAG_f (1 << 0)
33 # define READLINK_FOLLOW ""
36 static const char readlink_options[] = READLINK_FOLLOW;
38 int readlink_main(int argc, char **argv)
41 unsigned long opt = bb_getopt_ulflags(argc, argv, readlink_options);
42 #ifdef CONFIG_FEATURE_READLINK_FOLLOW
43 RESERVE_CONFIG_BUFFER(resolved_path, PATH_MAX);
46 /* no options, no getopt */
48 if (optind + 1 != argc)
51 #ifdef CONFIG_FEATURE_READLINK_FOLLOW
52 if (opt & READLINK_FLAG_f) {
53 buf = realpath(argv[optind], resolved_path);
56 buf = xreadlink(argv[optind]);
61 #ifdef CONFIG_FEATURE_CLEAN_UP