89 lines
2.3 KiB
C
89 lines
2.3 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/gpt.h
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* GUID Partition Table.
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*/
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#ifndef INCLUDE_MOUNT_GPT_H
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#define INCLUDE_MOUNT_GPT_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 gpt
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{
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char signature[8];
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uint32_t revision;
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uint32_t header_size;
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uint32_t header_crc32;
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uint32_t reserved0;
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uint64_t my_lba;
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uint64_t alternate_lba;
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uint64_t first_usable_lba;
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uint64_t last_usable_lba;
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unsigned char disk_guid[16];
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uint64_t partition_entry_lba;
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uint32_t number_of_partition_entries;
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uint32_t size_of_partition_entry;
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uint32_t partition_entry_array_crc32;
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unsigned char reserved1[420];
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};
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static_assert(sizeof(struct gpt) == 512, "sizeof(struct gpt) == 512");
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#define GPT_PARTITION_NAME_LENGTH 36
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struct gpt_partition
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{
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unsigned char partition_type_guid[16];
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unsigned char unique_partition_guid[16];
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uint64_t starting_lba;
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uint64_t ending_lba;
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uint64_t attributes;
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uint16_t partition_name[GPT_PARTITION_NAME_LENGTH];
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};
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static_assert(sizeof(struct gpt_partition) == 128, "sizeof(struct gpt_partition) == 128");
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struct gpt_partition_table
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{
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struct gpt gpt;
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unsigned char* rpt;
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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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void gpt_decode(struct gpt*);
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void gpt_encode(struct gpt*);
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void gpt_partition_decode(struct gpt_partition*);
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void gpt_partition_encode(struct gpt_partition*);
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char* gpt_decode_utf16(uint16_t* string, size_t length);
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uint32_t gpt_crc32(const void*, size_t);
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void gpt_partition_table_release(struct gpt_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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