NetBSD/sbin/gpt/header.c

109 lines
3.0 KiB
C

/*-
* Copyright (c) 2015 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by John Nemeth
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#if HAVE_NBTOOL_CONFIG_H
#include "nbtool_config.h"
#endif
#include <sys/cdefs.h>
#ifdef __RCSID
__RCSID("$NetBSD: header.c,v 1.9 2018/05/01 08:17:13 martin Exp $");
#endif
#include <sys/types.h>
#include <err.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "map.h"
#include "gpt.h"
#include "gpt_private.h"
static int cmd_header(gpt_t, int, char *[]);
static const char *headerhelp[] = {
"",
};
struct gpt_cmd c_header = {
"header",
cmd_header,
headerhelp, __arraycount(headerhelp),
GPT_READONLY,
};
#define usage() gpt_usage(NULL, &c_header)
static int
header(gpt_t gpt)
{
unsigned int revision;
map_t map;
struct gpt_hdr *hdr;
char buf[128];
gpt_show_num("Media Size", (uintmax_t)gpt->mediasz);
printf("Sector Size: %u\n", gpt->secsz);
gpt_show_num("Number of Sectors",
(uintmax_t)(gpt->mediasz / gpt->secsz));
printf("\nHeader Information:\n");
map = map_find(gpt, MAP_TYPE_PRI_GPT_HDR);
if (map == NULL) {
printf("- GPT Header not found\n");
return -1;
}
hdr = map->map_data;
revision = le32toh(hdr->hdr_revision);
printf("- GPT Header Revision: %u.%u\n", revision >> 16,
revision & 0xffff);
gpt_show_num("- First Data Sector", hdr->hdr_lba_start);
gpt_show_num("- Last Data Sector", hdr->hdr_lba_end);
gpt_uuid_snprintf(buf, sizeof(buf), "%d", hdr->hdr_guid);
printf("- Media GUID: %s\n", buf);
printf("- Number of GPT Entries: %u\n", hdr->hdr_entries);
return 0;
}
static int
cmd_header(gpt_t gpt, int argc, char *argv[])
{
if (argc != optind)
return usage();
return header(gpt);
}