reactos/drivers/fs/vfat/vfat.h

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   6 struct _BootSector {
   7   unsigned char  magic0, res0, magic1;
   8   unsigned char  OEMName[8];
   9   unsigned short BytesPerSector;
  10   unsigned char  SectorsPerCluster;
  11   unsigned short ReservedSectors;
  12   unsigned char  FATCount;
  13   unsigned short RootEntries, Sectors;
  14   unsigned char  Media;
  15   unsigned short FATSectors, SectorsPerTrack, Heads;
  16   unsigned long  HiddenSectors, SectorsHuge;
  17   unsigned char  Drive, Res1, Sig;
  18   unsigned long  VolumeID;
  19   unsigned char  VolumeLabel[11], SysType[8];
  20   unsigned char  Res2[450];
  21 } __attribute__((packed));
  22
  23 struct _BootSector32 {
  24   unsigned char  magic0, res0, magic1;
  25   unsigned char  OEMName[8];
  26   unsigned short BytesPerSector;
  27   unsigned char  SectorsPerCluster;
  28   unsigned short ReservedSectors;
  29   unsigned char  FATCount;
  30   unsigned short RootEntries, Sectors;
  31   unsigned char  Media;
  32   unsigned short FATSectors, SectorsPerTrack, Heads;
  33   unsigned long  HiddenSectors, SectorsHuge;
  34   unsigned long  FATSectors32;
  35   unsigned char  x[31];
  36   unsigned char  VolumeLabel[11], SysType[8];
  37   unsigned char  Res2[422];
  38 } __attribute__((packed));
  39
  40 typedef struct _BootSector BootSector;
  41
  42 struct _FATDirEntry {
  43   unsigned char  Filename[8], Ext[3], Attrib, Res[2];
  44   unsigned short CreationTime,CreationDate,AccessDate;
  45   unsigned short FirstClusterHigh;// higher
  46   unsigned short UpdateTime;//time create/update
  47   unsigned short UpdateDate;//date create/update
  48   unsigned short FirstCluster;
  49   unsigned long  FileSize;
  50 } __attribute__((packed));
  51
  52 typedef struct _FATDirEntry FATDirEntry;
  53
  54 struct _slot
  55 {
  56   unsigned char id;               // sequence number for slot
  57   WCHAR  name0_4[5];      // first 5 characters in name
  58   unsigned char attr;             // attribute byte
  59   unsigned char reserved;         // always 0
  60   unsigned char alias_checksum;   // checksum for 8.3 alias
  61   WCHAR  name5_10[6];     // 6 more characters in name
  62   unsigned char start[2];         // starting cluster number
  63   WCHAR  name11_12[2];     // last 2 characters in name
  64 } __attribute__((packed));
  65
  66
  67 typedef struct _slot slot;
  68
  69 #define BLOCKSIZE 512
  70
  71 #define FAT16 (1)
  72 #define FAT12 (2)
  73 #define FAT32 (3)
  74
  75 typedef struct
  76 {
  77   ERESOURCE Resource;
  78    PDEVICE_OBJECT StorageDevice;
  79    BootSector *Boot;
  80    int rootDirectorySectors, FATStart, rootStart, dataStart;
  81    int FATEntriesPerSector, FATUnit;
  82    ULONG BytesPerCluster;
  83    ULONG FatType;
  84    unsigned char* FAT;
  85 } DEVICE_EXTENSION, *PDEVICE_EXTENSION;
  86
  87 typedef struct _FSRTL_COMMON_FCB_HEADER{
  88   char  IsFastIoPossible;//is char the realtype ?
  89   ERESOURCE Resource;
  90   ERESOURCE PagingIoResource;
  91   ULONG  Flags;// is long the real type ?
  92   LARGE_INTEGER AllocationSize;
  93   LARGE_INTEGER FileSize;
  94   LARGE_INTEGER ValidDataLength;
  95   // other fields ??
  96 } FSRTL_COMMON_FCB_HEADER;
  97
  98 typedef struct _SFsdNTRequiredFCB {
  99   FSRTL_COMMON_FCB_HEADER CommonFCBHeader;
 100   SECTION_OBJECT_POINTERS SectionObject;
 101   ERESOURCE               MainResource;
 102   ERESOURCE               PagingIoResource;
 103 } SFsdNTRequiredFCB, *PtrSFsdNTRequiredFCB;
 104
 105 struct _VfatFCB;
 106 typedef struct _VfatFCB
 107 {
 108   SFsdNTRequiredFCB     NTRequiredFCB;
 109    FATDirEntry entry;
 110    WCHAR *ObjectName; // point on filename (250 chars max) in PathName
 111    WCHAR PathName[MAX_PATH];// path+filename 260 max
 112    long RefCount;
 113    PDEVICE_EXTENSION pDevExt;
 114    struct _VfatFCB * nextFcb, *prevFcb;
 115    struct _VfatFCB * parentFcb;
 116    UCHAR *Buffer;
 117    long Flags;
 118    ULONG Cluster;
 119 } VfatFCB, *PVfatFCB;
 120
 121 typedef struct
 122 {
 123   VfatFCB *   pFcb;
 124   LIST_ENTRY     NextCCB;
 125   PFILE_OBJECT   PtrFileObject;
 126   LARGE_INTEGER  CurrentByteOffset;
 127   ULONG StartEntry;  //for DirectoryControl
 128 //    PSTRING DirectorySearchPattern;// for DirectoryControl ?
 129 } VfatCCB, *PVfatCCB;
 130
 131
 132 #define ENTRIES_PER_SECTOR (BLOCKSIZE / sizeof(FATDirEntry))
 133
 134
 135 extern PVfatFCB pFirstFcb;
 136
 137 // functions called by i/o manager :
 138 NTSTATUS DriverEntry(PDRIVER_OBJECT _DriverObject,PUNICODE_STRING RegistryPath);
 139 NTSTATUS FsdDirectoryControl(PDEVICE_OBJECT DeviceObject, PIRP Irp);
 140 NTSTATUS FsdRead(PDEVICE_OBJECT DeviceObject, PIRP Irp);
 141 NTSTATUS FsdWrite(PDEVICE_OBJECT DeviceObject, PIRP Irp);
 142 NTSTATUS FsdCreate(PDEVICE_OBJECT DeviceObject, PIRP Irp);
 143 NTSTATUS FsdClose(PDEVICE_OBJECT DeviceObject, PIRP Irp);
 144 NTSTATUS FsdFileSystemControl(PDEVICE_OBJECT DeviceObject, PIRP Irp);
 145 NTSTATUS FsdQueryInformation(PDEVICE_OBJECT DeviceObject, PIRP Irp);
 146
 147
 148 // internal functions in blockdev.c
 149 BOOLEAN VFATReadSectors(IN PDEVICE_OBJECT pDeviceObject,
 150             IN ULONG   DiskSector,
 151                         IN ULONG       SectorCount,
 152                         IN UCHAR*       Buffer);
 153
 154 BOOLEAN VFATWriteSectors(IN PDEVICE_OBJECT pDeviceObject,
 155              IN ULONG   DiskSector,
 156                          IN ULONG        SectorCount,
 157                          IN UCHAR*      Buffer);
 158
 159 //internal functions in iface.c :
 160 NTSTATUS FindFile(PDEVICE_EXTENSION DeviceExt, PVfatFCB Fcb,
 161           PVfatFCB Parent, PWSTR FileToFind,ULONG *Entry);
 162 NTSTATUS FsdCloseFile(PDEVICE_EXTENSION DeviceExt, PFILE_OBJECT FileObject);
 163 NTSTATUS FsdGetStandardInformation(PVfatFCB FCB, PDEVICE_OBJECT DeviceObject,
 164                                    PFILE_STANDARD_INFORMATION StandardInfo);
 165 NTSTATUS FsdOpenFile(PDEVICE_EXTENSION DeviceExt, PFILE_OBJECT FileObject,
 166              PWSTR FileName);
 167 NTSTATUS FsdReadFile(PDEVICE_EXTENSION DeviceExt, PVfatFCB pFcb,
 168                      PVOID Buffer, ULONG Length, ULONG ReadOffset,
 169              PULONG LengthRead);
 170 NTSTATUS FsdWriteFile(PDEVICE_EXTENSION DeviceExt, PVfatFCB pFcb,
 171              PVOID Buffer, ULONG Length, ULONG WriteOffset);
 172 ULONG GetNextWriteCluster(PDEVICE_EXTENSION DeviceExt, ULONG CurrentCluster);
 173 BOOLEAN IsDeletedEntry(FATDirEntry *pEntry);
 174 BOOLEAN IsLastEntry(FATDirEntry *pEntry);
 175 wchar_t * vfat_wcsncpy(wchar_t * dest, const wchar_t *src,size_t wcount);
 176 void VFATWriteCluster(PDEVICE_EXTENSION DeviceExt, PVOID Buffer, ULONG Cluster);
 177
 178 //internal functions in dirwr.c
 179 NTSTATUS addEntry(PDEVICE_EXTENSION DeviceExt
 180                   ,PFILE_OBJECT pFileObject,ULONG RequestedOptions,UCHAR ReqAttr);
 181 NTSTATUS updEntry(PDEVICE_EXTENSION DeviceExt,PVfatFCB pFcb);
 182
 183
 184 //FIXME : following defines must be removed
 185 //FIXME   when this functions will work.
 186 #define ExAcquireResourceExclusiveLite(x,y) {}
 187 #define ExReleaseResourceForThreadLite(x,y) {}