support 'cgpt repair'

src/platform/vboot_reference/utility/cgpt/cgpt.c

 /* Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  *
  * Utility for ChromeOS-specific GPT partitions, Please see corresponding .c
  * files for more details.
  */
 #include "cgpt.h"
 #include <errno.h>
 #include <fcntl.h>
@@ skipping 13 matching lines @@
 const char* progname;
 
 /* Lists all command here. */
 struct {
   const char *name;
   int (*fp)(int argc, char *argv[]);
   const char *comment;
 } cmds[] = {
   {"attribute", CgptAttribute, "Update GPT attribute bits "
                                "(for ChromeOS kernel entry only)"},
+  {"repair", CgptRepair, "Repair primary and secondary headers and tables"},
   {"show", CgptShow, "Show partition details"},
 };
 
 /* Shows main menu. If 'message' is non-NULL, shows it as header. Then, this
  * traverses cmds[] and shows supported commands and their comments. */
 void Usage(const char *message) {
   int i;
 
   if (message) printf("%s\n", message);
   printf("Usage: %s COMMAND [OPTIONS]\n\n"
@@ skipping 193 matching lines @@
   progname = argv[0];
   cmd = argv[optind++];
   for (i = 0; i < sizeof(cmds)/sizeof(cmds[0]); ++i) {
     if (cmd && !strcmp(cmds[i].name, cmd))
       return cmds[i].fp(argc, argv);
   }
 
   Usage(0);
   return CGPT_FAILED;
 }