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      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 #define __STDC_FORMAT_MACROS
      6 #include <getopt.h>
      7 #include <inttypes.h>
      8 #include <string.h>
      9 
     10 #include "cgpt.h"
     11 #include "vboot_host.h"
     12 
     13 extern const char* progname;
     14 
     15 static void Usage(void)
     16 {
     17   printf("\nUsage: %s show [OPTIONS] DRIVE\n\n"
     18          "Display the GPT table\n\n"
     19          "Options:\n"
     20          "  -D NUM       Size (in bytes) of the disk where partitions reside\n"
     21          "                 default 0, meaning partitions and GPT structs are\n"
     22          "                 both on DRIVE\n"
     23          "  -n           Numeric output only\n"
     24          "  -v           Verbose output\n"
     25          "  -q           Quick output\n"
     26          "  -i NUM       Show specified partition only - pick one of:\n"
     27          "               -b  beginning sector\n"
     28          "               -s  partition size\n"
     29          "               -t  type guid\n"
     30          "               -u  unique guid\n"
     31          "               -l  label\n"
     32          "               -S  Successful flag\n"
     33          "               -T  Tries flag\n"
     34          "               -P  Priority flag\n"
     35          "               -A  raw 64-bit attribute value\n"
     36          "  -d           Debug output (including invalid headers)\n"
     37          "\n", progname);
     38 }
     39 
     40 int cmd_show(int argc, char *argv[]) {
     41   CgptShowParams params;
     42   memset(&params, 0, sizeof(params));
     43 
     44   int c;
     45   int errorcnt = 0;
     46   char *e = 0;
     47 
     48   opterr = 0;                     // quiet, you
     49   while ((c=getopt(argc, argv, ":hnvqi:bstulSTPAdD:")) != -1)
     50   {
     51     switch (c)
     52     {
     53     case 'D':
     54       params.drive_size = strtoull(optarg, &e, 0);
     55       if (!*optarg || (e && *e))
     56       {
     57         Error("invalid argument to -%c: \"%s\"\n", c, optarg);
     58         errorcnt++;
     59       }
     60       break;
     61     case 'n':
     62       params.numeric = 1;
     63       break;
     64     case 'v':
     65       params.verbose = 1;
     66       break;
     67     case 'q':
     68       params.quick = 1;
     69       break;
     70     case 'i':
     71       params.partition = (uint32_t)strtoul(optarg, &e, 0);
     72       if (!*optarg || (e && *e))
     73       {
     74         Error("invalid argument to -%c: \"%s\"\n", c, optarg);
     75         errorcnt++;
     76       }
     77       break;
     78     case 'b':
     79     case 's':
     80     case 't':
     81     case 'u':
     82     case 'l':
     83     case 'S':
     84     case 'T':
     85     case 'P':
     86     case 'A':
     87       params.single_item = c;
     88       break;
     89 
     90     case 'd':
     91       params.debug = 1;
     92       break;
     93 
     94     case 'h':
     95       Usage();
     96       return CGPT_OK;
     97     case '?':
     98       Error("unrecognized option: -%c\n", optopt);
     99       errorcnt++;
    100       break;
    101     case ':':
    102       Error("missing argument to -%c\n", optopt);
    103       errorcnt++;
    104       break;
    105     default:
    106       errorcnt++;
    107       break;
    108     }
    109   }
    110   if (errorcnt)
    111   {
    112     Usage();
    113     return CGPT_FAILED;
    114   }
    115 
    116   if (optind >= argc) {
    117     Error("missing drive argument\n");
    118     Usage();
    119     return CGPT_FAILED;
    120   }
    121 
    122   params.drive_name = argv[optind];
    123 
    124   return CgptShow(&params);
    125 }
    126