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"
38 "\nYou may use '--' to indicate that all following arguments are non-options.\n\n"
40 "\t-s\tmake symbolic links instead of hard links\n"
42 "\t-f\tremove existing destination files\n"
44 "\t-n\tno dereference symlinks - treat like normal file\n"
49 static int symlinkFlag = FALSE;
50 static int removeoldFlag = FALSE;
51 static int followLinks = TRUE;
53 extern int ln_main(int argc, char **argv)
62 /* Parse any options */
63 while (argc > 0 && stopIt == FALSE) {
93 linkName = argv[argc - 1];
95 if (strlen(linkName) > BUFSIZ) {
96 fprintf(stderr, name_too_long, "ln");
100 linkIntoDirFlag = isDirectory(linkName, TRUE, NULL);
102 if ((argc >= 3) && linkIntoDirFlag == FALSE) {
103 fprintf(stderr, not_a_directory, "ln", linkName);
107 while (argc-- >= 2) {
109 char srcName[BUFSIZ + 1];
114 if (strlen(*argv) > BUFSIZ) {
115 fprintf(stderr, name_too_long, "ln");
120 if (followLinks == FALSE) {
121 strcpy(srcName, *argv);
123 /* Warning! This can silently truncate if > BUFSIZ, but
124 I don't think that there can be one > BUFSIZ anyway. */
125 nChars = readlink(*argv, srcName, BUFSIZ);
126 srcName[nChars] = '\0';
130 if (removeoldFlag == TRUE) {
131 status = (unlink(linkName) && errno != ENOENT);
138 if (symlinkFlag == TRUE)
139 status = symlink(*argv, linkName);
141 status = link(*argv, linkName);
152 c-file-style: "linux"