82 lines
1.9 KiB
C
82 lines
1.9 KiB
C
/*
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* Copyright (c) 2015 Jonas 'Sortie' Termansen.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* mount/mbr.h
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* Master Boot Record.
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*/
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#ifndef INCLUDE_MOUNT_MBR_H
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#define INCLUDE_MOUNT_MBR_H
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#include <sys/types.h>
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#include <assert.h>
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#include <stddef.h>
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#include <stdint.h>
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struct blockdevice;
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struct partition_table;
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struct mbr_partition
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{
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uint8_t flags;
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uint8_t start_head;
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uint16_t start_sector_cylinder;
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uint8_t system_id;
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uint8_t end_head;
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uint16_t end_sector_cylinder;
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uint32_t start_sector;
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uint32_t total_sectors;
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};
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static_assert(sizeof(struct mbr_partition) == 16, "sizeof(struct mbr_partition) == 16");
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struct mbr
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{
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uint8_t bootstrap[446];
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unsigned char partitions[4][16];
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uint8_t signature[2];
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};
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static_assert(sizeof(struct mbr) == 512, "sizeof(struct mbr) == 512");
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struct mbr_ebr_link
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{
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struct mbr ebr;
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off_t offset;
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};
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struct mbr_partition_table
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{
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struct mbr mbr;
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size_t ebr_chain_count;
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struct mbr_ebr_link* ebr_chain;
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};
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#if defined(__cplusplus)
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extern "C" {
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#endif
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bool mbr_is_partition_used(const struct mbr_partition* partition);
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void mbr_partition_decode(struct mbr_partition*);
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void mbr_partition_encode(struct mbr_partition*);
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void mbr_partition_table_release(struct mbr_partition_table*);
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#if defined(__cplusplus)
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} /* extern "C" */
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#endif
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#endif
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