fat32.c File Reference

#include "fat32.h"
#include "../../drivers/blk/block.h"
#include "../../assert.h"
#include "../../time.h"
#include "../../intrinsics/atomic.h"
#include "../../includes/mg.h"
#include "../../includes/mm.h"
#include "../../includes/fs.h"
#include "../../includes/ob.h"

Go to the source code of this file.

Data Structures
struct	LFN_ENTRY_BUFFER

Macros
#define	WRITE_MODE_APPEND_EXISTING   0
#define	WRITE_MODE_CREATE_OR_REPLACE   1
#define	le32toh(x)
#define	MAX_LFN_ENTRIES   20
#define	MAX_LFN_LEN   260
#define	FAT32_READ_ERROR   0xFFFFFFFFu
#define	BPB_SECTOR_START   2048

Functions
MTSTATUS	fat32_init (int disk_index)
void	fat32_list_root (void)
MTSTATUS	fat32_read_file (IN PFILE_OBJECT FileObject, IN uint64_t FileOffset, OUT void *Buffer, IN size_t BufferSize, _Out_Opt size_t *BytesRead)
MTSTATUS	fat32_create_directory (const char *path)
	Creates a new directory (/testdir/ or /testdir are both allowed to create 'testdir' inside of 'root')
MTSTATUS	fat32_write_file (IN PFILE_OBJECT FileObject, IN uint64_t FileOffset, IN void *Buffer, IN size_t BufferSize, _Out_Opt size_t *BytesWritten)
MTSTATUS	fat32_create_file (IN const char *path, OUT PFILE_OBJECT *FileObjectOut)
MTSTATUS	fat32_list_directory (const char *path, char *listings, size_t max_len)
	Lists the directory given.
bool	fat32_directory_is_empty (const char *path)
	This function returns if the directory given to the function is empty (e.g, has only '.' and '..' entries / deleted / nonexistent)
MTSTATUS	fat32_delete_directory (const char *path)
	This function deletes the directory given to the function from the system.
MTSTATUS	fat32_delete_file (const char *path)
	This function deletes the file given to the function from the system.
void	fat32_deletion_routine (void *Object)

Variables
GOP_PARAMS	gop_local
void *	fat_cache_buf2 = NULL
volatile int32_t	fat32_called_from_scanner = 0

Macro Definition Documentation

BPB_SECTOR_START

#define BPB_SECTOR_START   2048

Definition at line 850 of file fat32.c.

FAT32_READ_ERROR

#define FAT32_READ_ERROR   0xFFFFFFFFu

Definition at line 43 of file fat32.c.

le32toh

#define le32toh

(

x

)

Value:

(x)

Definition at line 23 of file fat32.c.

MAX_LFN_ENTRIES

#define MAX_LFN_ENTRIES   20

Definition at line 37 of file fat32.c.

MAX_LFN_LEN

#define MAX_LFN_LEN   260

Definition at line 38 of file fat32.c.

WRITE_MODE_APPEND_EXISTING

#define WRITE_MODE_APPEND_EXISTING   0

Definition at line 17 of file fat32.c.

WRITE_MODE_CREATE_OR_REPLACE

#define WRITE_MODE_CREATE_OR_REPLACE   1

Definition at line 18 of file fat32.c.

Function Documentation

fat32_create_directory()

MTSTATUS fat32_create_directory

(

const char *

path

)

Creates a new directory (/testdir/ or /testdir are both allowed to create 'testdir' inside of 'root')

Parameters

path	The full path to the new directory

Returns

MTSTATUS Status code.

Definition at line 1136 of file fat32.c.

fat32_create_file()

MTSTATUS fat32_create_file	(	IN const char *	path,
		OUT PFILE_OBJECT *	FileObjectOut )

Definition at line 1525 of file fat32.c.

fat32_delete_directory()

MTSTATUS fat32_delete_directory

(

const char *

path

)

This function deletes the directory given to the function from the system.

Parameters

path	Full path to delete directory.

Returns

MTSTATUS Status code.

Definition at line 2037 of file fat32.c.

fat32_delete_file()

MTSTATUS fat32_delete_file

(

const char *

path

)

This function deletes the file given to the function from the system.

Parameters

path	Full path to delete file.

Returns

MTSTATUS Status code.

Definition at line 2069 of file fat32.c.

fat32_deletion_routine()

void fat32_deletion_routine

(

void *

Object

)

Definition at line 2146 of file fat32.c.

fat32_directory_is_empty()

bool fat32_directory_is_empty

(

const char *

path

)

This function returns if the directory given to the function is empty (e.g, has only '.' and '..' entries / deleted / nonexistent)

Parameters

path	Full path to dir

Returns

True or false based if empty or not.

Definition at line 1778 of file fat32.c.

fat32_init()

MTSTATUS fat32_init

(

int

disk_index

)

Definition at line 853 of file fat32.c.

fat32_list_directory()

MTSTATUS fat32_list_directory	(	const char *	path,
		char *	listings,
		size_t	max_len )

Lists the directory given.

Parameters

path	Path to directory, e.g "mydir/"
listings	[OUT] Pointer to directory listing. (each seperated with a newline character)
max_len	[IN] Max size of listings buffer.

Returns

MTSTATUS Status code.

Definition at line 1694 of file fat32.c.

fat32_list_root()

void fat32_list_root

(

void

)

Definition at line 877 of file fat32.c.

fat32_read_file()

MTSTATUS fat32_read_file	(	IN PFILE_OBJECT	FileObject,
		IN uint64_t	FileOffset,
		OUT void *	Buffer,
		IN size_t	BufferSize,
		_Out_Opt size_t *	BytesRead )

Definition at line 1029 of file fat32.c.

fat32_write_file()

MTSTATUS fat32_write_file	(	IN PFILE_OBJECT	FileObject,
		IN uint64_t	FileOffset,
		IN void *	Buffer,
		IN size_t	BufferSize,
		_Out_Opt size_t *	BytesWritten )

Definition at line 1364 of file fat32.c.

Variable Documentation

fat32_called_from_scanner

volatile int32_t fat32_called_from_scanner = 0

Definition at line 40 of file fat32.c.

fat_cache_buf2

void* fat_cache_buf2 = NULL

Definition at line 34 of file fat32.c.

gop_local

GOP_PARAMS gop_local

extern

Definition at line 26 of file kernel.c.