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