partition.c File Reference

#include "partition.h"
#include "bit_ops.h"
#include "file_allocation_table.h"
#include "directory.h"
#include "mem_allocate.h"
#include "fatfile.h"
#include <string.h>
#include <ctype.h>
#include <sys/iosupport.h>

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Enumerations
enum	BPB {   BPB_jmpBoot = 0x00, BPB_OEMName = 0x03, BPB_bytesPerSector = 0x0B, BPB_sectorsPerCluster = 0x0D,   BPB_reservedSectors = 0x0E, BPB_numFATs = 0x10, BPB_rootEntries = 0x11, BPB_numSectorsSmall = 0x13,   BPB_mediaDesc = 0x15, BPB_sectorsPerFAT = 0x16, BPB_sectorsPerTrk = 0x18, BPB_numHeads = 0x1A,   BPB_numHiddenSectors = 0x1C, BPB_numSectors = 0x20, BPB_FAT16_driveNumber = 0x24, BPB_FAT16_reserved1 = 0x25,   BPB_FAT16_extBootSig = 0x26, BPB_FAT16_volumeID = 0x27, BPB_FAT16_volumeLabel = 0x2B, BPB_FAT16_fileSysType = 0x36,   BPB_FAT16_bootCode = 0x3E, BPB_FAT32_sectorsPerFAT32 = 0x24, BPB_FAT32_extFlags = 0x28, BPB_FAT32_fsVer = 0x2A,   BPB_FAT32_rootClus = 0x2C, BPB_FAT32_fsInfo = 0x30, BPB_FAT32_bkBootSec = 0x32, BPB_FAT32_driveNumber = 0x40,   BPB_FAT32_reserved1 = 0x41, BPB_FAT32_extBootSig = 0x42, BPB_FAT32_volumeID = 0x43, BPB_FAT32_volumeLabel = 0x47,   BPB_FAT32_fileSysType = 0x52, BPB_FAT32_bootCode = 0x5A, BPB_bootSig_55 = 0x1FE, BPB_bootSig_AA = 0x1FF,   BPB_jmpBoot = 0x00, BPB_OEMName = 0x03, BPB_bytesPerSector = 0x0B, BPB_sectorsPerCluster = 0x0D,   BPB_reservedSectors = 0x0E, BPB_numFATs = 0x10, BPB_rootEntries = 0x11, BPB_numSectorsSmall = 0x13,   BPB_mediaDesc = 0x15, BPB_sectorsPerFAT = 0x16, BPB_sectorsPerTrk = 0x18, BPB_numHeads = 0x1A,   BPB_numHiddenSectors = 0x1C, BPB_numSectors = 0x20, BPB_FAT16_driveNumber = 0x24, BPB_FAT16_reserved1 = 0x25,   BPB_FAT16_extBootSig = 0x26, BPB_FAT16_volumeID = 0x27, BPB_FAT16_volumeLabel = 0x2B, BPB_FAT16_fileSysType = 0x36,   BPB_FAT16_bootCode = 0x3E, BPB_FAT32_sectorsPerFAT32 = 0x24, BPB_FAT32_extFlags = 0x28, BPB_FAT32_fsVer = 0x2A,   BPB_FAT32_rootClus = 0x2C, BPB_FAT32_fsInfo = 0x30, BPB_FAT32_bkBootSec = 0x32, BPB_FAT32_driveNumber = 0x40,   BPB_FAT32_reserved1 = 0x41, BPB_FAT32_extBootSig = 0x42, BPB_FAT32_volumeID = 0x43, BPB_FAT32_volumeLabel = 0x47,   BPB_FAT32_fileSysType = 0x52, BPB_FAT32_bootCode = 0x5A, BPB_bootSig_55 = 0x1FE, BPB_bootSig_AA = 0x1FF }
enum	FSIB {   FSIB_SIG1 = 0x00, FSIB_SIG2 = 0x1e4, FSIB_numberOfFreeCluster = 0x1e8, FSIB_numberLastAllocCluster = 0x1ec,   FSIB_bootSig_55 = 0x1FE, FSIB_bootSig_AA = 0x1FF, FSIB_SIG1 = 0x00, FSIB_SIG2 = 0x1e4,   FSIB_numberOfFreeCluster = 0x1e8, FSIB_numberLastAllocCluster = 0x1ec, FSIB_bootSig_55 = 0x1FE, FSIB_bootSig_AA = 0x1FF }

Functions
sec_t	FindFirstValidPartition_buf (const DISC_INTERFACE *disc, uint8_t *sectorBuffer)
sec_t	FindFirstValidPartition (const DISC_INTERFACE *disc)
PARTITION *	_FAT_partition_constructor_buf (const DISC_INTERFACE *disc, uint32_t cacheSize, uint32_t sectorsPerPage, sec_t startSector, uint8_t *sectorBuffer)
PARTITION *	_FAT_partition_constructor (const DISC_INTERFACE *disc, uint32_t cacheSize, uint32_t sectorsPerPage, sec_t startSector)
void	_FAT_partition_destructor (PARTITION *partition)
PARTITION *	_FAT_partition_getPartitionFromPath (const char *path)
static void	_FAT_updateFS_INFO (PARTITION *partition, uint8_t *sectorBuffer)
void	_FAT_partition_createFSinfo (PARTITION *partition)
void	_FAT_partition_readFSinfo (PARTITION *partition)
void	_FAT_partition_writeFSinfo (PARTITION *partition)
uint32_t *	_FAT_getCwdClusterPtr (const char *name)

Variables
static const char	FAT_SIG [3] = {'F', 'A', 'T'}
static const char	FS_INFO_SIG1 [4] = {'R', 'R', 'a', 'A'}
static const char	FS_INFO_SIG2 [4] = {'r', 'r', 'A', 'a'}

Enumeration Type Documentation

BPB

enum BPB

Enumerator
BPB_jmpBoot
BPB_OEMName
BPB_bytesPerSector
BPB_sectorsPerCluster
BPB_reservedSectors
BPB_numFATs
BPB_rootEntries
BPB_numSectorsSmall
BPB_mediaDesc
BPB_sectorsPerFAT
BPB_sectorsPerTrk
BPB_numHeads
BPB_numHiddenSectors
BPB_numSectors
BPB_FAT16_driveNumber
BPB_FAT16_reserved1
BPB_FAT16_extBootSig
BPB_FAT16_volumeID
BPB_FAT16_volumeLabel
BPB_FAT16_fileSysType
BPB_FAT16_bootCode
BPB_FAT32_sectorsPerFAT32
BPB_FAT32_extFlags
BPB_FAT32_fsVer
BPB_FAT32_rootClus
BPB_FAT32_fsInfo
BPB_FAT32_bkBootSec
BPB_FAT32_driveNumber
BPB_FAT32_reserved1
BPB_FAT32_extBootSig
BPB_FAT32_volumeID
BPB_FAT32_volumeLabel
BPB_FAT32_fileSysType
BPB_FAT32_bootCode
BPB_bootSig_55
BPB_bootSig_AA
BPB_jmpBoot
BPB_OEMName
BPB_bytesPerSector
BPB_sectorsPerCluster
BPB_reservedSectors
BPB_numFATs
BPB_rootEntries
BPB_numSectorsSmall
BPB_mediaDesc
BPB_sectorsPerFAT
BPB_sectorsPerTrk
BPB_numHeads
BPB_numHiddenSectors
BPB_numSectors
BPB_FAT16_driveNumber
BPB_FAT16_reserved1
BPB_FAT16_extBootSig
BPB_FAT16_volumeID
BPB_FAT16_volumeLabel
BPB_FAT16_fileSysType
BPB_FAT16_bootCode
BPB_FAT32_sectorsPerFAT32
BPB_FAT32_extFlags
BPB_FAT32_fsVer
BPB_FAT32_rootClus
BPB_FAT32_fsInfo
BPB_FAT32_bkBootSec
BPB_FAT32_driveNumber
BPB_FAT32_reserved1
BPB_FAT32_extBootSig
BPB_FAT32_volumeID
BPB_FAT32_volumeLabel
BPB_FAT32_fileSysType
BPB_FAT32_bootCode
BPB_bootSig_55
BPB_bootSig_AA

FSIB

enum FSIB

Enumerator
FSIB_SIG1
FSIB_SIG2
FSIB_numberOfFreeCluster
FSIB_numberLastAllocCluster
FSIB_bootSig_55
FSIB_bootSig_AA
FSIB_SIG1
FSIB_SIG2
FSIB_numberOfFreeCluster
FSIB_numberLastAllocCluster
FSIB_bootSig_55
FSIB_bootSig_AA

Function Documentation

_FAT_getCwdClusterPtr()

uint32_t* _FAT_getCwdClusterPtr

(

const char *

name

)

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_FAT_partition_constructor()

PARTITION* _FAT_partition_constructor	(	const DISC_INTERFACE *	disc,
		uint32_t	cacheSize,
		uint32_t	sectorsPerPage,
		sec_t	startSector
	)

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_FAT_partition_constructor_buf()

PARTITION* _FAT_partition_constructor_buf	(	const DISC_INTERFACE *	disc,
		uint32_t	cacheSize,
		uint32_t	sectorsPerPage,
		sec_t	startSector,
		uint8_t *	sectorBuffer
	)

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_FAT_partition_createFSinfo()

void _FAT_partition_createFSinfo

(

PARTITION *

partition

)

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_FAT_partition_destructor()

void _FAT_partition_destructor

(

PARTITION *

partition

)

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_FAT_partition_getPartitionFromPath()

PARTITION* _FAT_partition_getPartitionFromPath

(

const char *

path

)

_FAT_partition_readFSinfo()

void _FAT_partition_readFSinfo

(

PARTITION *

partition

)

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_FAT_partition_writeFSinfo()

void _FAT_partition_writeFSinfo

(

PARTITION *

partition

)

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_FAT_updateFS_INFO()

static void _FAT_updateFS_INFO ( PARTITION *  partition, uint8_t *  sectorBuffer  )

static

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FindFirstValidPartition()

sec_t FindFirstValidPartition

(

const DISC_INTERFACE *

disc

)

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FindFirstValidPartition_buf()

sec_t FindFirstValidPartition_buf	(	const DISC_INTERFACE *	disc,
		uint8_t *	sectorBuffer
	)

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Variable Documentation

FAT_SIG

const char FAT_SIG[3] = {'F', 'A', 'T'}

static

FS_INFO_SIG1

const char FS_INFO_SIG1[4] = {'R', 'R', 'a', 'A'}

static

FS_INFO_SIG2

const char FS_INFO_SIG2[4] = {'r', 'r', 'A', 'a'}

static