1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
|
/* vi: set sw=4 ts=4: */
/*
* Mini ln implementation for busybox
*
* Copyright (C) 1999,2000 by Lineo, inc.
* Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include "busybox.h"
#define BB_DECLARE_EXTERN
#define bb_need_not_a_directory
#include "messages.c"
#include <stdio.h>
#include <dirent.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include <unistd.h>
static const int LN_SYMLINK = 1;
static const int LN_FORCE = 2;
static const int LN_NODEREFERENCE = 4;
/*
* linkDestName is where the link points to,
* linkSrcName is the name of the link to be created.
*/
static int fs_link(const char *link_DestName, const char *link_SrcName, const int flag)
{
int status;
int srcIsDir;
char *srcName;
if (link_DestName==NULL)
return(FALSE);
srcName = (char *) malloc(strlen(link_SrcName)+strlen(link_DestName)+1);
if (link_SrcName==NULL)
strcpy(srcName, link_DestName);
else
strcpy(srcName, link_SrcName);
if (flag&LN_NODEREFERENCE)
srcIsDir = is_directory(srcName, TRUE, NULL);
else
srcIsDir = is_directory(srcName, FALSE, NULL);
if ((srcIsDir==TRUE)&&((flag&LN_NODEREFERENCE)==0)) {
strcat(srcName, "/");
strcat(srcName, link_DestName);
}
if (flag&LN_FORCE)
unlink(srcName);
if (flag&LN_SYMLINK)
status = symlink(link_DestName, srcName);
else
status = link(link_DestName, srcName);
if (status != 0) {
perror(srcName);
return(FALSE);
}
return(TRUE);
}
extern int ln_main(int argc, char **argv)
{
int status = EXIT_SUCCESS;
int flag = 0;
int opt;
/* Parse any options */
while ((opt=getopt(argc, argv, "sfn")) != -1) {
switch(opt) {
case 's':
flag |= LN_SYMLINK;
break;
case 'f':
flag |= LN_FORCE;
break;
case 'n':
flag |= LN_NODEREFERENCE;
break;
default:
usage(ln_usage);
}
}
while(optind<(argc-1)) {
if (fs_link(argv[optind], argv[argc-1], flag)==FALSE)
status = EXIT_FAILURE;
optind++;
}
return(status);
}
/*
Local Variables:
c-file-style: "linux"
c-basic-offset: 4
tab-width: 4
End:
*/
|
