95 lines
2.3 KiB
C
95 lines
2.3 KiB
C
#ifndef FSCTL_FUGUE_BITS_FAT_H
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#define FSCTL_FUGUE_BITS_FAT_H 1
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#include <stdint.h>
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#include <stddef.h>
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/* struct fugue_fat_vbr : Volume Boot Record (hardcoded for Fugue) */
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struct fugue_fat_vbr
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{
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// common boot structure
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uint8_t BS_jmpBoot[3];
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uint8_t BS_OEMName[8];
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// BIOS parameter Block
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uint16_t BPB_BytsPerSec;
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uint8_t BPB_SecPerClus;
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uint16_t BPB_RsvdSecCnt;
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uint8_t BPB_NumFATs;
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uint16_t BPB_RootEntCnt;
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uint16_t BPB_TotSec16;
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uint8_t BPB_Media;
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uint16_t BPB_FATSz16;
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uint16_t BPB_SecPerTrk;
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uint16_t BPB_NumHeads;
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uint32_t BPB_HiddSec;
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uint32_t BPB_TotSec32;
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// Extended BIOS Parameter Block
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uint8_t BS_DrvNum;
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uint8_t BS_Reserved1;
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uint8_t BS_BootSig;
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uint8_t BS_VolID[4];
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uint8_t BS_VolLab[11];
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uint8_t BS_FilSysType[8];
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uint8_t _unused[448];
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// Signature
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uint8_t Signature_word[2];
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} __attribute__((packed));
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/* FUGUE_DIR_ATTR_* : Attribute information */
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#define FUGUE_DIR_ATTR_RDONLY 0x01
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#define FUGUE_DIR_ATTR_HIDDEN 0x02
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#define FUGUE_DIR_ATTR_SYSTEM 0x04
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#define FUGUE_DIR_ATTR_VOLUME 0x08
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#define FUGUE_DIR_ATTR_DIR 0x10
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#define FUGUE_DIR_ATTR_ARCHIVE 0x20
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#define FUGUE_DIR_ATTR_DEVICE 0x40
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#define FUGUE_DIR_ATTR_LFN 0x0f
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/* fugue_fat_dir : directory strcuture information */
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struct fugue_fat_dir
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{
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uint8_t DIR_Name[8];
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uint8_t DIR_Exts[3];
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uint8_t DIR_Attr;
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uint8_t _unknown0[1+1+2+2+2];
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uint16_t DIR_FstClusHI;
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uint8_t _unknown1[2+2];
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uint16_t DIR_FstClusLO;
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uint32_t DIR_FileSize;
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} __attribute__((packed));
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/* fugue_fat_dir_name : Fugue directory name strcuture */
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struct fugue_fat_dir_name
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{
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struct {
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uint8_t :2;
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uint8_t last :1;
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uint8_t :1;
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uint8_t id :4;
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} DIR_Secquence;
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uint16_t DIR_Char0;
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uint16_t DIR_Char1;
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uint16_t DIR_Char2;
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uint16_t DIR_Char3;
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uint16_t DIR_Char4;
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uint8_t DIR_Attr; // must be 0x0f
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uint8_t DIR_Type; // must be 0x00
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uint8_t checksum;
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uint16_t DIR_Char5;
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uint16_t DIR_Char6;
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uint16_t DIR_Char7;
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uint16_t DIR_Char8;
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uint16_t DIR_Char9;
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uint16_t DIR_Char10;
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uint16_t DIR_FstClus; // must be 0x0000
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uint16_t DIR_Char11;
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uint16_t DIR_Char12;
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} __attribute__((packed));
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#endif /* FSCTL_FUGUE_BITS_FAT_H */
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