+/* vi: set sw=4 ts=4: */
/*
* Mini ln implementation for busybox
*
- *
- * Copyright (C) 1999 by Lineo, inc.
+ * 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
*
*/
-#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 <errno.h>
+#define LN_SYMLINK 1
+#define LN_FORCE 2
+#define LN_NODEREFERENCE 4
-static const char ln_usage[] = "ln [OPTION] TARGET... LINK_NAME|DIRECTORY\n"
-"Create a link named LINK_NAME or DIRECTORY to the specified TARGET\n"
-"\nOptions:\n"
-"\t-s\tmake symbolic links instead of hard links\n"
-"\t-f\tremove existing destination files\n";
-
-
-static int symlinkFlag = FALSE;
-static int removeoldFlag = FALSE;
-
-
-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;
- static char* linkName;
+ int status;
+ int srcIsDir;
+ char *srcName;
- if (argc < 3) {
- usage (ln_usage);
- }
- 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:
- usage (ln_usage);
- }
- 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);
- linkName = argv[argc - 1];
+ if (flag&LN_NODEREFERENCE)
+ srcIsDir = isDirectory(srcName, TRUE, NULL);
+ else
+ srcIsDir = isDirectory(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(linkName))) {
- fprintf(stderr, "%s: not a directory\n", linkName);
- exit (FALSE);
- }
+ if (status != 0) {
+ perror(srcName);
+ return(FALSE);
+ }
+ return(TRUE);
+}
- while (argc-- >= 2) {
- if (removeoldFlag==TRUE ) {
- status = ( unlink(linkName) && errno != ENOENT );
- if ( status != 0 ) {
- perror(linkName);
- exit( FALSE);
- }
+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);
+ }
}
- if ( symlinkFlag==TRUE)
- status = symlink(*argv, linkName);
- else
- status = link(*argv, linkName);
- if ( status != 0 ) {
- perror(linkName);
- 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:
+*/