-#include "internal.h"
+/* 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 <sys/stat.h>
-#include <sys/param.h>
+#include <dirent.h>
+#include <string.h>
+#include <stdlib.h>
#include <errno.h>
+#include <unistd.h>
-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 srcIsDir;
+ char *srcName;
- 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]);
- }
+ srcName = (char *) malloc(strlen(link_SrcName)+strlen(link_DestName)+1);
- if ( i->force )
- status = ( unlink(destination) && errno != ENOENT );
+ 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 ) {
- if ( i->makeSymbolicLink )
- status = symlink(i->source, destination);
- else
- status = link(i->source, destination);
+ if (status != 0) {
+ perror(srcName);
+ return(FALSE);
}
+ return(TRUE);
+}
- if ( status != 0 ) {
- name_and_error(destination);
- return 1;
+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);
+ }
}
- else
- return 0;
+ 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:
+*/