reactos/drivers/fs/vfat/vfat.h

   1
   2
   3
   4 struct _BootSector {
   5   unsigned char  magic0, res0, magic1;
   6   unsigned char  OEMName[8];
   7   unsigned short BytesPerSector;
   8   unsigned char  SectorsPerCluster;
   9   unsigned short ReservedSectors;
  10   unsigned char  FATCount;
  11   unsigned short RootEntries, Sectors;
  12   unsigned char  Media;
  13   unsigned short FATSectors, SectorsPerTrack, Heads;
  14   unsigned long  HiddenSectors, SectorsHuge;
  15   unsigned char  Drive, Res1, Sig;
  16   unsigned long  VolumeID;
  17   unsigned char  VolumeLabel[11], SysType[8];
  18   unsigned char  Res2[450];
  19 } __attribute__((packed));
  20
  21 struct _BootSector32 {
  22   unsigned char  magic0, res0, magic1;
  23   unsigned char  OEMName[8];
  24   unsigned short BytesPerSector;
  25   unsigned char  SectorsPerCluster;
  26   unsigned short ReservedSectors;
  27   unsigned char  FATCount;
  28   unsigned short RootEntries, Sectors;
  29   unsigned char  Media;
  30   unsigned short FATSectors, SectorsPerTrack, Heads;
  31   unsigned long  HiddenSectors, SectorsHuge;
  32   unsigned long  FATSectors32;
  33   unsigned char  x[31];
  34   unsigned char  VolumeLabel[11], SysType[8];
  35   unsigned char  Res2[422];
  36 } __attribute__((packed));
  37
  38 typedef struct _BootSector BootSector;
  39
  40 struct _FATDirEntry {
  41   unsigned char  Filename[8], Ext[3], Attrib, Res[2];
  42   unsigned short CreationTime,CreationDate,AccessDate;
  43   unsigned short FirstClusterHigh;// higher
  44   unsigned short UpdateTime;//time create/update
  45   unsigned short UpdateDate;//date create/update
  46   unsigned short FirstCluster;
  47   unsigned long  FileSize;
  48 } __attribute__((packed));
  49
  50 typedef struct _FATDirEntry FATDirEntry;
  51
  52 struct _slot
  53 {
  54   unsigned char id;               // sequence number for slot
  55   WCHAR  name0_4[5];      // first 5 characters in name
  56   unsigned char attr;             // attribute byte
  57   unsigned char reserved;         // always 0
  58   unsigned char alias_checksum;   // checksum for 8.3 alias
  59   WCHAR  name5_10[6];     // 6 more characters in name
  60   unsigned char start[2];         // starting cluster number
  61   WCHAR  name11_12[2];     // last 2 characters in name
  62 } __attribute__((packed));
  63
  64
  65 typedef struct _slot slot;
  66
  67 #define BLOCKSIZE 512
  68
  69 // Put the rest in struct.h
  70 /*
  71 typedef unsigned int uint32;
  72
  73 typedef struct _SFsdIdentifier {
  74   uint32 NodeType;
  75   uint32 NodeSize;
  76 } SFsdIdentifier, *PtrSFsdIdentifier;
  77
  78 typedef struct _SFsdNTRequiredFCB {
  79   FSRTL_COMMON_FCB_HEADER CommonFCBHeader;
  80   SECTION_OBJECT_POINTERS SectionObject;
  81   ERESOURCE               MainResource;
  82   ERESOURCE               PagingIoResource;
  83 } SFsdNTRequiredFCB, *PtrSFsdNTRequiredFCB;
  84
  85 typedef struct _SFsdFileControlBlock {
  86   SFsdIdentifier        NodeIdentifier;
  87   SFsdNTRequiredFCB     NTRequiredFCB;
  88   SFsdDiskDependentFCB  DiskDependentFCB;
  89   struct _SFsdVolumeControlBlock   *PtrVCB;
  90   LIST_ENTRY   NextFCB;
  91   uint32       FCBFlags;
  92   LIST_ENTRY   NextCCB;
  93   SHARE_ACCESS FCBShareAccess;
  94   uint32       LazyWriterThreadID;
  95   uint32       ReferenceCount;
  96   uint32       OpenHandleCount;
  97   PtrSFsdObjectName FCBName;
  98   LARGE_INTEGER     CreationTime;
  99   LARGE_INTEGER     LastAccessTime;
 100   LARGE_INTEGER     LastWriteTime;
 101   SFsdFileLockAnchorFCB ByteRangeLock;
 102   OPLOCK  FCBOplock;
 103 } SFsdFCB, *PtrSFsdFCB;
 104
 105 */
 106 #define FAT16 (1)
 107 #define FAT12 (2)
 108 #define FAT32 (3)
 109
 110 typedef struct
 111 {
 112    PDEVICE_OBJECT StorageDevice;
 113    BootSector *Boot;
 114    int rootDirectorySectors, FATStart, rootStart, dataStart;
 115    int FATEntriesPerSector, FATUnit;
 116    ULONG BytesPerCluster;
 117    ULONG FatType;
 118    unsigned char* FAT;
 119 } DEVICE_EXTENSION, *PDEVICE_EXTENSION;
 120
 121 typedef struct
 122 {
 123    FATDirEntry entry;
 124    WCHAR ObjectName[251];// filename has 250 characters max
 125    ULONG StartSector;
 126    ULONG StartEntry;//for DirectoryControl
 127 } FCB, *PFCB;
 128
 129
 130 #define ENTRIES_PER_SECTOR (BLOCKSIZE / sizeof(FATDirEntry))
 131
 132
 133
 134 // functions called by i/o manager :
 135 NTSTATUS DriverEntry(PDRIVER_OBJECT _DriverObject,PUNICODE_STRING RegistryPath);
 136 NTSTATUS FsdDirectoryControl(PDEVICE_OBJECT DeviceObject, PIRP Irp);
 137 NTSTATUS FsdRead(PDEVICE_OBJECT DeviceObject, PIRP Irp);
 138 NTSTATUS FsdWrite(PDEVICE_OBJECT DeviceObject, PIRP Irp);
 139 NTSTATUS FsdCreate(PDEVICE_OBJECT DeviceObject, PIRP Irp);
 140 NTSTATUS FsdClose(PDEVICE_OBJECT DeviceObject, PIRP Irp);
 141 NTSTATUS FsdFileSystemControl(PDEVICE_OBJECT DeviceObject, PIRP Irp);
 142 NTSTATUS FsdQueryInformation(PDEVICE_OBJECT DeviceObject, PIRP Irp);
 143
 144
 145 // internal functions in blockdev.c
 146 BOOLEAN VFATReadSectors(IN PDEVICE_OBJECT pDeviceObject,
 147             IN ULONG   DiskSector,
 148                         IN ULONG       SectorCount,
 149                         IN UCHAR*       Buffer);
 150
 151 BOOLEAN VFATWriteSectors(IN PDEVICE_OBJECT pDeviceObject,
 152              IN ULONG   DiskSector,
 153                          IN ULONG        SectorCount,
 154                          IN UCHAR*      Buffer);
 155
 156 //internal functions in iface.c :
 157 NTSTATUS FsdGetStandardInformation(PFCB FCB, PDEVICE_OBJECT DeviceObject,
 158                                    PFILE_STANDARD_INFORMATION StandardInfo);
 159 NTSTATUS FindFile(PDEVICE_EXTENSION DeviceExt, PFCB Fcb,
 160           PFCB Parent, PWSTR FileToFind,ULONG *StartSector,ULONG *Entry);
 161 wchar_t * vfat_wcsncpy(wchar_t * dest, const wchar_t *src,size_t wcount);