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/* Copyright (c) 2012 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.
*/
#define __STDC_FORMAT_MACROS
#include <getopt.h>
#include <inttypes.h>
#include <string.h>
#include "cgpt.h"
#include "vboot_host.h"
extern const char* progname;
static void Usage(void)
{
printf("\nUsage: %s show [OPTIONS] DRIVE\n\n"
"Display the GPT table.\n\n"
"Units are blocks by default.\n\n"
"Options:\n"
" -D NUM Size (in bytes) of the disk where partitions reside;\n"
" default 0, meaning partitions and GPT structs are\n"
" both on DRIVE\n"
" -n Numeric output only\n"
" -v Verbose output\n"
" -q Quick output\n"
" -i NUM Show specified partition only\n"
" -d Debug output (including invalid headers)\n"
"\n"
"When using -i, specific fields may be displayed using one of:\n"
" -b first block (a.k.a. start of partition)\n"
" -s partition size (in blocks)\n"
" -t type guid\n"
" -u unique guid\n"
" -l label\n"
" -S Successful flag\n"
" -T Tries flag\n"
" -P Priority flag\n"
" -R Required flag\n"
" -B Legacy Boot flag\n"
" -A raw 16-bit attribute value (bits 48-63)\n"
"\n", progname);
}
int cmd_show(int argc, char *argv[]) {
CgptShowParams params;
memset(¶ms, 0, sizeof(params));
int c;
int errorcnt = 0;
char *e = 0;
opterr = 0; // quiet, you
while ((c=getopt(argc, argv, ":hnvqi:bstulSTPRBAdD:")) != -1)
{
switch (c)
{
case 'D':
params.drive_size = strtoull(optarg, &e, 0);
errorcnt += check_int_parse(c, e);
break;
case 'n':
params.numeric = 1;
break;
case 'v':
params.verbose = 1;
break;
case 'q':
params.quick = 1;
break;
case 'i':
params.partition = (uint32_t)strtoul(optarg, &e, 0);
errorcnt += check_int_parse(c, e);
if (params.partition <= 0) {
Error("-i requires a number between 1 and 128 (inclusive)\n");
errorcnt++;
}
break;
case 'b':
case 's':
case 't':
case 'u':
case 'l':
case 'S':
case 'T':
case 'P':
case 'R':
case 'B':
case 'A':
if (params.single_item) {
Error("-%c already specified; rejecting additional -%c\n",
params.single_item, c);
Error("Only a single item may be displayed at a time\n");
errorcnt++;
}
params.single_item = c;
break;
case 'd':
params.debug = 1;
break;
case 'h':
Usage();
return CGPT_OK;
case '?':
Error("unrecognized option: -%c\n", optopt);
errorcnt++;
break;
case ':':
Error("missing argument to -%c\n", optopt);
errorcnt++;
break;
default:
errorcnt++;
break;
}
}
if (!params.partition && params.single_item) {
Error("-i required when displaying a single item\n");
errorcnt++;
}
if (errorcnt)
{
Usage();
return CGPT_FAILED;
}
if (optind >= argc) {
Error("missing drive argument\n");
Usage();
return CGPT_FAILED;
}
params.drive_name = argv[optind];
return CgptShow(¶ms);
}
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