Home | History | Annotate | Download | only in cgpt 
      1 // Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include <getopt.h>
      6 #include <string.h>
      7 
      8 #include "cgpt.h"
      9 #include "vboot_host.h"
     10 
     11 extern const char* progname;
     12 
     13 static void Usage(void)
     14 {
     15   printf("\nUsage: %s legacy [OPTIONS] DRIVE\n\n"
     16          "Switch GPT header signature to \"CHROMEOS\".\n\n"
     17          "Options:\n"
     18          "  -D NUM       Size (in bytes) of the disk where partitions reside\n"
     19          "                 default 0, meaning partitions and GPT structs are\n"
     20          "                 both on DRIVE\n"
     21          "  -e           Switch GPT header signature back to \"EFI PART\"\n"
     22          "\n", progname);
     23 }
     24 
     25 int cmd_legacy(int argc, char *argv[]) {
     26   CgptLegacyParams params;
     27   memset(&params, 0, sizeof(params));
     28 
     29   int c;
     30   char* e = 0;
     31   int errorcnt = 0;
     32 
     33   opterr = 0;                     // quiet, you
     34   while ((c=getopt(argc, argv, ":heD:")) != -1)
     35   {
     36     switch (c)
     37     {
     38     case 'D':
     39       params.drive_size = strtoull(optarg, &e, 0);
     40       if (!*optarg || (e && *e))
     41       {
     42         Error("invalid argument to -%c: \"%s\"\n", c, optarg);
     43         errorcnt++;
     44       }
     45       break;
     46     case 'e':
     47       params.efipart = 1;
     48       break;
     49 
     50     case 'h':
     51       Usage();
     52       return CGPT_OK;
     53     case '?':
     54       Error("unrecognized option: -%c\n", optopt);
     55       errorcnt++;
     56       break;
     57     case ':':
     58       Error("missing argument to -%c\n", optopt);
     59       errorcnt++;
     60       break;
     61     default:
     62       errorcnt++;
     63       break;
     64     }
     65   }
     66   if (errorcnt)
     67   {
     68     Usage();
     69     return CGPT_FAILED;
     70   }
     71 
     72   if (optind >= argc) {
     73     Usage();
     74     return CGPT_FAILED;
     75   }
     76 
     77   params.drive_name = argv[optind];
     78 
     79   return CgptLegacy(&params);
     80 }
     81