BarinkOS/source/kernel/vfs/VFS.h

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#pragma once
#include <stdint.h>
#include "../../CoreLib/Path.h"
#define FS_FILE 0
#define FS_DIRECTORY 1
#define FS_INVALID 2
#define DEVICE_MAX 26
typedef struct _FILE {
char name [32];
uint32_t flags;
uint32_t filelength;
uint32_t id;
uint32_t eof;
uint32_t position;
uint32_t currentCluster;
uint32_t device;
}FILE, *PFILE;
typedef struct _FILE_SYSTEM{
char name[8];
FILE (*Directory) (const char* Directoryname);
void (*Mount) ();
void (*Read) (PFILE file, unsigned char* buffer, unsigned int length);
void (Close) (PFILE);
FILE (*Open) (const char* filename);
}FILESYSTEM, *PFILESYSTEM;
typedef struct _MOUNT_INFO{
uint32_t numSectors;
uint32_t fatOffset;
uint32_t numRootEntries;
uint32_t rootOffset;
uint32_t rootSize;
uint32_t fatSize;
uint32_t fatEntrySize;
}MOUNT_INFO, *PMOUNT_INFO;
typedef struct _DIRECTORY{
uint8_t Filename[8];
uint8_t Ext[3];
uint8_t Attrib;
uint8_t Reserved;
uint8_t TimeCreatedMs;
uint16_t TimeCreated;
uint16_t DateCreated;
uint16_t DateLastAccessed;
uint16_t FirstClusterHiBytes;
uint16_t LastModTime;
uint16_t LastModDate;
uint16_t FirstCluster;
uint32_t FileSize;
}DIRECTORY, *PDIRECTORY;
// Date Format
// [0..4] Day
// [5..8] Month
// [9..15] Year
// Time Format
// [0..4] Seconds
// [5..10] Minute
// [11..15] Hour
extern PFILESYSTEM _filesystems[DEVICE_MAX];
FILE volOpenFile(const char* fname);
void volCloseFile(PFILE file);
void volRegisterFilesystem(PFILESYSTEM, unsigned int deviceID);
void volUnregisterFilesystem(PFILESYSTEM);
void volUnregisterFileSystemByID(unsigned int deviceID);
class FileSystem{
public:
static void initialize();
static void ResolvePath(Path& path);
};