100 lines
2.2 KiB
C
100 lines
2.2 KiB
C
#ifndef __LIB__PART_H__
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#define __LIB__PART_H__
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#include <stdint.h>
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#include <stddef.h>
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#include <stdbool.h>
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#include <lib/guid.h>
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#if uefi == 1
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# include <efi.h>
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#endif
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#define NO_PARTITION (-1)
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#define INVALID_TABLE (-2)
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#define END_OF_TABLE (-3)
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struct volume {
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#if uefi == 1
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EFI_HANDLE efi_handle;
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EFI_HANDLE efi_part_handle;
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EFI_BLOCK_IO *block_io;
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bool unique_sector_valid;
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uint64_t unique_sector;
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uint32_t unique_sector_crc32;
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#elif bios == 1
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int drive;
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#endif
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size_t fastest_xfer_size;
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int index;
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bool is_optical;
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bool pxe;
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int partition;
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int sector_size;
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struct volume *backing_dev;
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int max_partition;
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int cache_status;
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uint8_t *cache;
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uint64_t cached_block;
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uint64_t first_sect;
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uint64_t sect_count;
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bool guid_valid;
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struct guid guid;
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bool part_guid_valid;
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struct guid part_guid;
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};
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extern struct volume **volume_index;
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extern size_t volume_index_i;
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bool gpt_get_guid(struct guid *guid, struct volume *volume);
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int part_get(struct volume *part, struct volume *volume, int partition);
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struct volume *volume_get_by_guid(struct guid *guid);
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struct volume *volume_get_by_coord(bool optical, int drive, int partition);
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#if bios == 1
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struct volume *volume_get_by_bios_drive(int drive);
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#endif
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bool volume_read(struct volume *part, void *buffer, uint64_t loc, uint64_t count);
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#define volume_iterate_parts(_VOLUME_, _BODY_) ({ \
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struct volume *_VOLUME = _VOLUME_; \
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if (_VOLUME->pxe) { \
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do { \
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struct volume *_PART = _VOLUME; \
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_BODY_ \
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} while (0); \
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} else { \
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while (_VOLUME->backing_dev != NULL) { \
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_VOLUME = _VOLUME->backing_dev; \
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} \
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\
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int _PART_CNT = -1; \
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for (size_t _PARTNO = 0; ; _PARTNO++) { \
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if (_PART_CNT > _VOLUME->max_partition) \
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break; \
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\
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struct volume *_PART = volume_get_by_coord(_VOLUME->is_optical, \
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_VOLUME->index, _PARTNO); \
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if (_PART == NULL) \
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continue; \
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\
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_PART_CNT++; \
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\
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_BODY_ \
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} \
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} \
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})
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#endif
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