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 1.11 2025/02/23 20:47:19 christos 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
52 static int cmd_header(gpt_t, int, char *[]);
53
54 static const char *headerhelp[] = {
55 "",
56 };
57
58 const struct 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
67 static int
header(gpt_t gpt)68 header(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
101 static int
cmd_header(gpt_t gpt,int argc,char * argv[]__unused)102 cmd_header(gpt_t gpt, int argc, char *argv[] __unused)
103 {
104 if (argc != optind)
105 return usage();
106
107 return header(gpt);
108 }
109