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\n"
36 "Create a link named LINK_NAME or DIRECTORY to the specified TARGET\n\n"
38 "\t-s\tmake symbolic links instead of hard links\n"
40 "\t-f\tremove existing destination files\n"
41 "\t-n\tno dereference symlinks - treat like normal file\n";
43 static int symlinkFlag = FALSE;
44 static int removeoldFlag = FALSE;
45 static int followLinks = TRUE;
47 extern int ln_main(int argc, char **argv)
58 /* Parse any options */
59 while (**argv == '-') {
78 linkName = argv[argc - 1];
80 if (strlen(linkName) > BUFSIZ) {
81 fprintf(stderr, name_too_long, "ln");
85 linkIntoDirFlag = isDirectory(linkName, TRUE, NULL);
87 if ((argc > 3) && !linkIntoDirFlag) {
88 fprintf(stderr, not_a_directory, "ln", linkName);
93 char srcName[BUFSIZ + 1];
96 if (strlen(*argv) > BUFSIZ) {
97 fprintf(stderr, name_too_long, "ln");
101 if (followLinks == FALSE) {
102 strcpy(srcName, *argv);
104 /* Warning! This can silently truncate if > BUFSIZ, but
105 I don't think that there can be one > BUFSIZ anyway. */
106 nChars = readlink(*argv, srcName, BUFSIZ);
107 srcName[nChars] = '\0';
110 if (removeoldFlag == TRUE) {
111 status = (unlink(linkName) && errno != ENOENT);
118 if (symlinkFlag == TRUE)
119 status = symlink(*argv, linkName);
121 status = link(*argv, linkName);
132 c-file-style: "linux"