1 /* vi: set sw=4 ts=4: */
3 * Mini ln implementation for busybox
5 * Copyright (C) 1999,2000 by Lineo, inc.
6 * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 #define BB_DECLARE_EXTERN
26 #define bb_need_name_too_long
27 #define bb_need_not_a_directory
34 static const char ln_usage[] =
35 "ln [OPTION] TARGET... LINK_NAME|DIRECTORY\n"
36 #ifndef BB_FEATURE_TRIVIAL_HELP
37 "\nCreate a link named LINK_NAME or DIRECTORY to the specified TARGET\n\n"
39 "\t-s\tmake symbolic links instead of hard links\n"
41 "\t-f\tremove existing destination files\n"
42 "\t-n\tno dereference symlinks - treat like normal file\n"
46 static int symlinkFlag = FALSE;
47 static int removeoldFlag = FALSE;
48 static int followLinks = TRUE;
50 extern int ln_main(int argc, char **argv)
59 /* Parse any options */
60 while (argc > 0 && stopIt == FALSE) {
90 linkName = argv[argc - 1];
92 if (strlen(linkName) > BUFSIZ) {
93 fprintf(stderr, name_too_long, "ln");
97 linkIntoDirFlag = isDirectory(linkName, TRUE, NULL);
99 if ((argc > 3) && !linkIntoDirFlag) {
100 fprintf(stderr, not_a_directory, "ln", linkName);
104 while (argc-- >= 2) {
105 char srcName[BUFSIZ + 1];
108 if (strlen(*argv) > BUFSIZ) {
109 fprintf(stderr, name_too_long, "ln");
113 if (followLinks == FALSE) {
114 strcpy(srcName, *argv);
116 /* Warning! This can silently truncate if > BUFSIZ, but
117 I don't think that there can be one > BUFSIZ anyway. */
118 nChars = readlink(*argv, srcName, BUFSIZ);
119 srcName[nChars] = '\0';
122 if (removeoldFlag == TRUE) {
123 status = (unlink(linkName) && errno != ENOENT);
130 if (symlinkFlag == TRUE)
131 status = symlink(*argv, linkName);
133 status = link(*argv, linkName);
144 c-file-style: "linux"