-#include "internal.h"
+/* 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 <sys/stat.h>
-#include <sys/param.h>
+#include <dirent.h>
+#include <string.h>
+#include <stdlib.h>
#include <errno.h>
+#include <unistd.h>
+#include "busybox.h"
+#define BB_DECLARE_EXTERN
+#define bb_need_not_a_directory
+#include "messages.c"
+
-const char ln_usage[] = "ln [-s] [-f] original-name additional-name\n"
-"\n"
-"\tAdd a new name that refers to the same file as \"original-name\"\n"
-"\n"
-"\t-s:\tUse a \"symbolic\" link, instead of a \"hard\" link.\n"
-"\t-f:\tRemove existing destination files.\n";
+static const int LN_SYMLINK = 1;
+static const int LN_FORCE = 2;
+static const int LN_NODEREFERENCE = 4;
-int
-ln_fn(const struct FileInfo * i)
+/*
+ * 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 = 0;
- char d[PATH_MAX];
- const char * destination = i->destination;
+ int status;
+ int src_is_dir;
+ char *src_name;
- if ( !i->makeSymbolicLink && (i->stat.st_mode & S_IFMT) == S_IFDIR ) {
- fprintf(stderr, "Please use \"ln -s\" to link directories.\n");
- return 1;
- }
+ if (link_destname==NULL)
+ return(FALSE);
- /*
- * If the destination is a directory, create a file within it.
- */
- if ( is_a_directory(i->destination) ) {
- destination = join_paths(
- d
- ,i->destination
- ,&i->source[i->directoryLength]);
- }
+ src_name = (char *) xmalloc(strlen(link_srcname)+strlen(link_destname)+1);
- if ( i->force )
- status = ( unlink(destination) && errno != ENOENT );
+ if (link_srcname==NULL)
+ strcpy(src_name, link_destname);
+ else
+ strcpy(src_name, link_srcname);
- if ( status == 0 ) {
- if ( i->makeSymbolicLink )
- status = symlink(i->source, destination);
- else
- status = link(i->source, destination);
- }
+ 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;
- if ( status != 0 ) {
- name_and_error(destination);
- return 1;
+ 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
- return 0;
+ 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:
+*/