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/* vi: set sw=4 ts=4: */
/*
* Mini ln implementation for busybox
*
* Copyright (C) 1999,2000,2001 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 <stdio.h>
#include <dirent.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include <unistd.h>
#include "busybox.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 src_is_dir;
char *src_name;
if (link_destname==NULL)
return(FALSE);
src_name = (char *) xmalloc(strlen(link_srcname)+strlen(link_destname)+1);
if (link_srcname==NULL)
strcpy(src_name, link_destname);
else
strcpy(src_name, link_srcname);
if (flag&LN_NODEREFERENCE)
src_is_dir = is_directory(src_name, TRUE, NULL);
else
src_is_dir = is_directory(src_name, FALSE, NULL);
if ((src_is_dir==TRUE)&&((flag&LN_NODEREFERENCE)==0)) {
char* srcdir_name;
srcdir_name = xstrdup(link_destname);
strcat(src_name, "/");
strcat(src_name, get_last_path_component(srcdir_name));
free(srcdir_name);
}
if (flag&LN_FORCE)
unlink(src_name);
if (flag&LN_SYMLINK)
status = symlink(link_destname, src_name);
else
status = link(link_destname, src_name);
if (status != 0) {
perror_msg(src_name);
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:
show_usage();
}
}
if (optind > (argc-1)) {
show_usage();
}
if (optind == (argc-1)) {
if (fs_link(argv[optind],
get_last_path_component(argv[optind]), flag)==FALSE)
status = EXIT_FAILURE;
}
while(optind<(argc-1)) {
if (fs_link(argv[optind], argv[argc-1], flag)==FALSE)
status = EXIT_FAILURE;
optind++;
}
exit(status);
}
/*
Local Variables:
c-file-style: "linux"
c-basic-offset: 4
tab-width: 4
End:
*/
|
