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Erik Andersene49d5ec2000-02-08 19:58:47 +00001/* vi: set sw=4 ts=4: */
Eric Andersenf6be9441999-10-13 21:12:06 +00002/*
3 * Mini ln implementation for busybox
4 *
Erik Andersen61677fe2000-04-13 01:18:56 +00005 * Copyright (C) 1999,2000 by Lineo, inc.
Eric Andersenc4996011999-10-20 22:08:37 +00006 * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
Eric Andersenf6be9441999-10-13 21:12:06 +00007 *
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.
12 *
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.
17 *
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
21 *
22 */
23
Eric Andersen3570a342000-09-25 21:45:58 +000024#include "busybox.h"
Erik Andersenfac10d72000-02-07 05:29:42 +000025#define BB_DECLARE_EXTERN
Erik Andersenfac10d72000-02-07 05:29:42 +000026#define bb_need_not_a_directory
27#include "messages.c"
28
Eric Andersencc8ed391999-10-05 16:24:54 +000029#include <stdio.h>
Eric Andersenf6be9441999-10-13 21:12:06 +000030#include <dirent.h>
Eric Andersencc8ed391999-10-05 16:24:54 +000031#include <errno.h>
32
Glenn L McGrathaa3908d2000-10-04 09:34:35 +000033#define LN_SYMLINK 1
34#define LN_FORCE 2
35#define LN_NODEREFERENCE 4
36
37/*
38 * linkDestName is where the link points to,
39 * linkSrcName is the name of the link to be created.
40 */
41static int fs_link(const char *link_DestName, const char *link_SrcName, const int flag)
42{
43 int status;
44 int srcIsDir;
45 char *srcName;
46
47 if (link_DestName==NULL)
48 return(FALSE);
49
50 srcName = (char *) malloc(strlen(link_SrcName)+strlen(link_DestName)+1);
51
52 if (link_SrcName==NULL)
53 strcpy(srcName, link_DestName);
54 else
55 strcpy(srcName, link_SrcName);
56
57 if (flag&LN_NODEREFERENCE)
Mark Whitleyf57c9442000-12-07 19:56:48 +000058 srcIsDir = is_directory(srcName, TRUE, NULL);
Glenn L McGrathaa3908d2000-10-04 09:34:35 +000059 else
Mark Whitleyf57c9442000-12-07 19:56:48 +000060 srcIsDir = is_directory(srcName, FALSE, NULL);
Glenn L McGrathaa3908d2000-10-04 09:34:35 +000061
62 if ((srcIsDir==TRUE)&&((flag&LN_NODEREFERENCE)==0)) {
63 strcat(srcName, "/");
64 strcat(srcName, link_DestName);
65 }
66
67 if (flag&LN_FORCE)
68 unlink(srcName);
69
70 if (flag&LN_SYMLINK)
71 status = symlink(link_DestName, srcName);
72 else
73 status = link(link_DestName, srcName);
74
75 if (status != 0) {
76 perror(srcName);
77 return(FALSE);
78 }
79 return(TRUE);
80}
Eric Andersenf6be9441999-10-13 21:12:06 +000081
82extern int ln_main(int argc, char **argv)
Eric Andersencc8ed391999-10-05 16:24:54 +000083{
Eric Andersen13241df2000-10-04 16:02:53 +000084 int status = EXIT_SUCCESS;
Glenn L McGrathaa3908d2000-10-04 09:34:35 +000085 int flag = 0;
86 int opt;
87
Erik Andersene49d5ec2000-02-08 19:58:47 +000088 /* Parse any options */
Glenn L McGrathaa3908d2000-10-04 09:34:35 +000089 while ((opt=getopt(argc, argv, "sfn")) != -1) {
90 switch(opt) {
91 case 's':
92 flag |= LN_SYMLINK;
93 break;
94 case 'f':
95 flag |= LN_FORCE;
96 break;
97 case 'n':
98 flag |= LN_NODEREFERENCE;
99 break;
100 default:
101 usage(ln_usage);
Eric Andersen815e9042000-06-06 16:15:23 +0000102 }
Erik Andersenfac10d72000-02-07 05:29:42 +0000103 }
Glenn L McGrathaa3908d2000-10-04 09:34:35 +0000104 while(optind<(argc-1)) {
105 if (fs_link(argv[optind], argv[argc-1], flag)==FALSE)
Eric Andersen13241df2000-10-04 16:02:53 +0000106 status = EXIT_FAILURE;
Glenn L McGrathaa3908d2000-10-04 09:34:35 +0000107 optind++;
Eric Andersen815e9042000-06-06 16:15:23 +0000108 }
Eric Andersen13241df2000-10-04 16:02:53 +0000109 return(status);
Eric Andersencc8ed391999-10-05 16:24:54 +0000110}
Erik Andersen029011b2000-03-04 21:19:32 +0000111
112/*
113Local Variables:
114c-file-style: "linux"
115c-basic-offset: 4
116tab-width: 4
117End:
118*/