/*
* Copyright (c) 2015 Jiri Svoboda
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - 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.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
/** @addtogroup liblabel
* @{
*/
/** @file
*/
#ifndef LIBLABEL_STD_MBR_H_
#define LIBLABEL_STD_MBR_H_
#include <stdint.h>
enum {
/** Block address of Master Boot Record. */
mbr_ba = 0,
/** First block allowed for allocation */
mbr_ablock0 = 18,
/** Number of primary partition records */
mbr_nprimary = 4,
/** Boot record signature */
mbr_br_signature = 0xAA55,
/** EBR PTE slot describing partition corresponding to this EBR */
mbr_ebr_pte_this = 0,
/** EBR PTE slot describing the next EBR */
mbr_ebr_pte_next = 1
};
enum mbr_ptype {
/** Unused partition entry */
mbr_pt_unused = 0x00,
/** Extended partition */
mbr_pt_extended = 0x05,
/** Extended partition with LBA */
mbr_pt_extended_lba = 0x0f,
/** FAT16 with LBA */
mbr_pt_fat16_lba = 0x0e,
/** FAT32 with LBA */
mbr_pt_fat32_lba = 0x0c,
/** IFS, HPFS, NTFS, exFAT */
mbr_pt_ms_advanced = 0x07,
/** Minix */
mbr_pt_minix = 0x81,
/** Linux */
mbr_pt_linux = 0x83,
/** GPT Protective */
mbr_pt_gpt_protect = 0xee
};
/** Structure of a partition table entry */
typedef struct {
uint8_t status;
/** CHS of fist block in partition */
uint8_t first_chs[3];
/** Partition type */
uint8_t ptype;
/** CHS of last block in partition */
uint8_t last_chs[3];
/** LBA of first block in partition */
uint32_t first_lba;
/** Number of blocks in partition */
uint32_t length;
} __attribute__((packed)) mbr_pte_t;
/** Structure of a boot-record block */
typedef struct {
/* Area for boot code */
uint8_t code_area[440];
/* Optional media ID */
uint32_t media_id;
uint16_t pad0;
/** Partition table entries */
mbr_pte_t pte[mbr_nprimary];
/** Boot record block signature (@c BR_SIGNATURE) */
uint16_t signature;
} __attribute__((packed)) mbr_br_block_t;
#endif
/** @}
*/