ubixfs.h

/**************************************************************************************
 Copyright (c) 2002 The UbixOS Project
 All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

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Redistributions in binary form must reproduce the above copyright notice, this list of conditions, the following disclaimer and the list of authors
in the documentation and/or other materials provided with the distribution. Neither the name of the UbixOS Project nor the names of its
contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 $Id$

**************************************************************************************/

#ifndef _UBIXFS_H
#define _UBIXFS_H

#include <ubixos/types.h>
#include <sys/device.h>
#include <vfs/file.h>

#define UBIXDISKMAGIC     ((uInt32)0x45) /* The disk magic number */
#define MAXPARTITIONS     4
#define blockSize         8
#define blockByteSize     blockSize*512

#define EOBC              -1


#define typeFile      1
#define typeContainer 2
#define typeDirectory 4
#define typeDeleted   8

//Partition Information
struct ubixDiskLabel {
  uInt32 magicNum;
  uInt32 magicNum2;
  uInt16 driveType;
  uInt16 numPartitions;
  struct  drivePartitions {  //the partition table
    uInt32 pSize;            //number of sectors in partition
    uInt32 pOffset;          //starting sector
    uInt32 pFsSize;          //filesystem basic fragment size
    uInt32 pBatSize;         //BAT size
    uInt8  pFsType;          //filesystem type, see below
    uInt8 pFrag;            //filesystem fragments per block
    } partitions[MAXPARTITIONS];
  };

struct partitionInformation {
  uInt32 size;                 //Size In Sectors
  uInt32 startSector;          //Base Sector Of Partition
  uInt32 blockAllocationTable; //Base Sector Of BAT
  uInt32 rootDirectory;        //Base Sector Of Root Directory
  };

//Block Allocation Table Entry
struct blockAllocationTableEntry {
  long attributes; //Block Attributes
  long realSector; //Real Sector  
  long nextBlock;  //Sector Of Next Block
  long reserved;   //Reserved
  };

//UbixFS Directory Entry
struct directoryEntry {
  uInt32  startCluster;   //Starting Cluster Of File
  uInt32  size;           //Size Of File
  uInt32  creationDate;  //Date Created
  uInt32  lastModified;  //Date Last Modified
  uInt32  uid;           //UID Of Owner
  uInt32  gid;           //GID Of Owner
  uShort attributes;    //Files Attributes
  uShort permissions;   //Files Permissions
  char   fileName[256]; //File Name
  };

struct bootSect {
  uChar jmp[4];
  uChar id[6];
  uShort version;
  uShort tmp;
  uShort fsStart;
  uShort tmp2;
  uInt32 krnl_start;
  uInt BytesPerSector;
  uInt SectersPerTrack;
  uInt TotalHeads;
  uInt32 TotalSectors;
  uChar code[479];
  };  

struct ubixFsInfo {
  struct blockAllocationTableEntry *blockAllocationTable;
  uInt32 batEntries;
  };

int readFile(char *file);
int writeFileByte(int ch,fileDescriptor *fd,long offset);
int openFileUbixFS(char *file,fileDescriptor *fd);
int mkDirUbixFS(char *dir,fileDescriptor *fd);
int getFreeBlocks(int count,fileDescriptor *fd);
//extern struct ubixDiskLabel *diskLabel;

//Good Functions
void initUbixFS(struct mountPoints *mp);
int enableUbixFS();
int readUbixFS(fileDescriptor *fd,char *data,long offset,long size);
int writeUbixFS(fileDescriptor *fd,char *data,long offset,long size);
void syncBat(struct mountPoints *mp);
int freeBlocks(int block,fileDescriptor *fd);
int addDirEntry(struct directoryEntry *dir,fileDescriptor *fd);
void ubixFSUnlink(char *path,struct mountPoints *mp);

#endif

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