1/*-
2 * Copyright (c) 2015 The NetBSD Foundation, Inc.
3 * All rights reserved.
4 *
5 * This code is derived from software contributed to The NetBSD Foundation
6 * by John Nemeth
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
19 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
20 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
25 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27 * POSSIBILITY OF SUCH DAMAGE.
28 */
29
30#if HAVE_NBTOOL_CONFIG_H
31#include "nbtool_config.h"
32#endif
33
34#include <sys/cdefs.h>
35#ifdef __RCSID
36__RCSID("$NetBSD: header.c,v 1.10 2019/03/14 10:26:10 mlelstv Exp $");
37#endif
38
39#include <sys/types.h>
40
41#include <err.h>
42#include <stddef.h>
43#include <stdio.h>
44#include <stdlib.h>
45#include <string.h>
46#include <unistd.h>
47
48#include "map.h"
49#include "gpt.h"
50#include "gpt_private.h"
51
52static int cmd_header(gpt_t, int, char *[]);
53
54static const char *headerhelp[] = {
55	"",
56};
57
58struct gpt_cmd c_header = {
59	"header",
60	cmd_header,
61	headerhelp, __arraycount(headerhelp),
62	GPT_READONLY,
63};
64
65#define usage() gpt_usage(NULL, &c_header)
66
67static int
68header(gpt_t gpt)
69{
70	unsigned int revision;
71	map_t map;
72	struct gpt_hdr *hdr;
73	char buf[128];
74
75	gpt_show_num("Media Size", (uintmax_t)gpt->mediasz);
76	printf("Sector Size: %u\n", gpt->secsz);
77
78	gpt_show_num("Number of Sectors",
79	    (uintmax_t)(gpt->mediasz / gpt->secsz));
80
81	printf("\nHeader Information:\n");
82
83	map = map_find(gpt, MAP_TYPE_PRI_GPT_HDR);
84	if (map == NULL) {
85		printf("- GPT Header not found\n");
86		return -1;
87	}
88
89	hdr = map->map_data;
90	revision = le32toh(hdr->hdr_revision);
91	printf("- GPT Header Revision: %u.%u\n", revision >> 16,
92	     revision & 0xffff);
93	gpt_show_num("- First Data Sector", le64toh(hdr->hdr_lba_start));
94	gpt_show_num("- Last Data Sector", le64toh(hdr->hdr_lba_end));
95	gpt_uuid_snprintf(buf, sizeof(buf), "%d", hdr->hdr_guid);
96	printf("- Media GUID: %s\n", buf);
97	printf("- Number of GPT Entries: %u\n", le32toh(hdr->hdr_entries));
98	return 0;
99}
100
101static int
102cmd_header(gpt_t gpt, int argc, char *argv[])
103{
104	if (argc != optind)
105		return usage();
106
107	return header(gpt);
108}
109