- rename bareconfig to allbareconfig and emit "is not set" strings needed for

[oweals/busybox.git] / debianutils / readlink.c

diff --git a/debianutils/readlink.c b/debianutils/readlink.c
index d8d7e8c2d27c891974c8da6373b1d3ae66ec510b..83abdbfa6049fde18e6701783e2a4c854e9265f6 100644 (file)
--- a/debianutils/readlink.c
+++ b/debianutils/readlink.c
@@ -4,43 +4,36 @@
  *
  * Copyright (C) 2000,2001 Matt Kraai <kraai@alumni.carnegiemellon.edu>
  *
- * 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
- *
+ * Licensed under GPL v2, see file LICENSE in this tarball for details.
  */
 
 #include <errno.h>
 #include <unistd.h>
 #include <stdlib.h>
+#include <getopt.h>
 #include "busybox.h"
 
+#define READLINK_FLAG_f        (1 << 0)
+
 int readlink_main(int argc, char **argv)
 {
-       char *buf = NULL;
+       char *buf;
+       unsigned long opt = ENABLE_FEATURE_READLINK_FOLLOW ?
+                                                       bb_getopt_ulflags(argc, argv, "f") : 0;
 
-       /* no options, no getopt */
+       if (argc != (ENABLE_FEATURE_READLINK_FOLLOW ? optind + 1 : 2))
+                       bb_show_usage();
 
-       if (argc != 2)
-               bb_show_usage();
+       if (opt & READLINK_FLAG_f)
+               buf = realpath(argv[optind], NULL);
+       else
+               buf = xreadlink(argv[ENABLE_FEATURE_READLINK_FOLLOW ? optind : 1]);
 
-       buf = xreadlink(argv[1]);
        if (!buf)
                return EXIT_FAILURE;
        puts(buf);
-#ifdef CONFIG_FEATURE_CLEAN_UP
-       free(buf);
-#endif
+
+       if (ENABLE_FEATURE_CLEAN_UP) free(buf);
 
        return EXIT_SUCCESS;
 }