Atmosphere/fusee/fusee-secondary/src/gpt.h
2020-08-01 17:20:56 +01:00

61 lines
2.0 KiB
C

/*
* Copyright (c) 2018-2020 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef FUSEE_GPT_H
#define FUSEE_GPT_H
#include <stdio.h>
#include <stdint.h>
#include <stdbool.h>
typedef struct efi_entry_t {
uint8_t type_uuid[16];
uint8_t unique_uuid[16];
uint64_t first_lba;
uint64_t last_lba; /* Inclusive */
uint64_t attributes;
uint16_t name[36];
} efi_entry_t;
typedef struct efi_header {
uint8_t magic[8]; /* Must be "EFI PART" */
uint32_t revision;
uint32_t header_size; /* Usually and at most 92 bytes. */
uint32_t header_crc32; /* 0 during the computation */
uint32_t reserved; /* Must be 0. */
uint64_t header_lba;
uint64_t backup_lba;
uint64_t partitions_first_lba;
uint64_t partitions_last_lba;
uint8_t disk_guid[16];
uint64_t entries_first_lba;
uint32_t entry_count;
uint32_t entry_size;
uint32_t entries_crc32;
} __attribute__((packed, aligned(4))) efi_header_t;
typedef int (*gpt_entry_iterator_t)(const efi_entry_t *entry, void *param, size_t entry_offset, FILE *disk);
typedef int (*gpt_emu_entry_iterator_t)(const efi_entry_t *entry, void *param, size_t entry_offset, FILE *disk, const char *origin_path, int num_parts, uint64_t part_limit);
int gpt_get_header(efi_header_t *out, FILE *disk, size_t sector_size);
int gpt_iterate_through_entries(FILE *disk, size_t sector_size, gpt_entry_iterator_t callback, void *param);
#endif