+/* vi: set sw=4 ts=4: */
/*
* Mini ln implementation for busybox
*
- * Copyright (C) 1998 by Erik Andersen <andersee@debian.org>
+ * 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
*
*/
-#include "internal.h"
+#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;
-static 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 int symlinkFlag = FALSE;
-static int removeoldFlag = FALSE;
-static const char *destName;
-
-
-extern int ln_main(int argc, char **argv)
+/*
+ * 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;
- char newdestName[NAME_MAX];
+ int status;
+ int srcIsDir;
+ char *srcName;
- if (argc < 3) {
- fprintf(stderr, "Usage: %s", ln_usage);
- exit (FALSE);
- }
- argc--;
- argv++;
+ if (link_DestName==NULL)
+ return(FALSE);
- /* Parse any options */
- while (**argv == '-') {
- while (*++(*argv))
- switch (**argv) {
- case 's':
- symlinkFlag = TRUE;
- break;
- case 'f':
- removeoldFlag = TRUE;
- break;
- default:
- fprintf(stderr, "Usage: %s\n", ln_usage);
- exit(FALSE);
- }
- argc--;
- argv++;
- }
+ srcName = (char *) malloc(strlen(link_SrcName)+strlen(link_DestName)+1);
+ if (link_SrcName==NULL)
+ strcpy(srcName, link_DestName);
+ else
+ strcpy(srcName, link_SrcName);
- destName = argv[argc - 1];
+ 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 ((argc > 3) && !(isDirectory(destName))) {
- fprintf(stderr, "%s: not a directory\n", destName);
- exit (FALSE);
- }
+ if (status != 0) {
+ perror(srcName);
+ return(FALSE);
+ }
+ return(TRUE);
+}
- while (argc-- >= 2) {
- strcpy(newdestName, destName);
- strcat(newdestName, (*argv)+(strlen(*(++argv))));
+extern int ln_main(int argc, char **argv)
+{
+ int status = EXIT_SUCCESS;
+ int flag = 0;
+ int opt;
- if (removeoldFlag==TRUE ) {
- status = ( unlink(newdestName) && errno != ENOENT );
- if ( status != 0 ) {
- perror(newdestName);
- exit( FALSE);
- }
+ /* 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);
+ }
}
- if ( symlinkFlag==TRUE)
- status = symlink(*argv, newdestName);
- else
- status = link(*argv, newdestName);
- if ( status != 0 ) {
- perror(newdestName);
- exit( FALSE);
+ while(optind<(argc-1)) {
+ if (fs_link(argv[optind], argv[argc-1], flag)==FALSE)
+ status = EXIT_FAILURE;
+ optind++;
}
- }
- exit( TRUE);
+ return(status);
}
+
+/*
+Local Variables:
+c-file-style: "linux"
+c-basic-offset: 4
+tab-width: 4
+End:
+*/