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68 lines
1.5 KiB
C
68 lines
1.5 KiB
C
#ifndef KERNAUX_INCLUDED_MBR
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#define KERNAUX_INCLUDED_MBR
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <kernaux/macro.h>
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#include <stdbool.h>
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#include <stdint.h>
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#define KERNAUX_MBR_SIZE 512
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#define KERNAUX_MBR_MAGIC 0xaa55
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#define KERNAUX_MBR_ENTRIES 4
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#define KERNAUX_MBR_BOOTSTRAP_SIZE \
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(KERNAUX_MBR_SIZE - sizeof(struct KernAux_Mbr_Info))
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#include <kernaux/macro/packing_start.run>
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struct KernAux_Mbr_Entry {
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uint8_t drive_attributes;
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unsigned first_sector_chs_addr : 24;
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uint8_t partition_type;
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unsigned last_sector_chs_addr : 24;
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uint32_t first_sector_lba_addr;
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uint32_t sectors_count;
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}
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KERNAUX_PACKED;
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KERNAUX_STATIC_TEST_STRUCT_SIZE(KernAux_Mbr_Entry, 16);
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struct KernAux_Mbr_Info {
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uint32_t disk_id;
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uint16_t reserved;
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struct KernAux_Mbr_Entry entries[KERNAUX_MBR_ENTRIES];
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uint16_t magic;
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}
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KERNAUX_PACKED;
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KERNAUX_STATIC_TEST_STRUCT_SIZE(
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KernAux_Mbr_Info,
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8 + KERNAUX_MBR_ENTRIES * sizeof(struct KernAux_Mbr_Entry)
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);
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struct KernAux_Mbr {
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uint8_t bootstrap[KERNAUX_MBR_BOOTSTRAP_SIZE];
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struct KernAux_Mbr_Info info;
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}
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KERNAUX_PACKED;
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KERNAUX_STATIC_TEST_STRUCT_SIZE(
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KernAux_Mbr,
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KERNAUX_MBR_BOOTSTRAP_SIZE + sizeof(struct KernAux_Mbr_Info)
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);
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#include <kernaux/macro/packing_end.run>
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bool KernAux_Mbr_is_valid(const struct KernAux_Mbr *mbr);
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bool KernAux_Mbr_Info_is_valid(const struct KernAux_Mbr_Info *mbr_info);
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bool KernAux_Mbr_Entry_is_valid(const struct KernAux_Mbr_Entry *mbr_entry);
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#ifdef __cplusplus
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}
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#endif
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#endif
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