cdprocs.h

winddk src目录下的文件系统驱动源码压缩!

                                 F,                                 \
                                 &(FC)->InitialDirent->DirContext,  \
                                 &(FC)->InitialDirent->Dirent )


//
//  The following routines are used to manipulate the fscontext fields
//  of the file object, implemented in FilObSup.c
//

//
//  Type of opens.  FilObSup.c depends on this order.
//

typedef enum _TYPE_OF_OPEN {

    UnopenedFileObject = 0,
    StreamFileOpen,
    UserVolumeOpen,
    UserDirectoryOpen,
    UserFileOpen,
    BeyondValidType

} TYPE_OF_OPEN;
typedef TYPE_OF_OPEN *PTYPE_OF_OPEN;

VOID
CdSetFileObject (
    IN PIRP_CONTEXT IrpContext,
    IN PFILE_OBJECT FileObject,
    IN TYPE_OF_OPEN TypeOfOpen,
    IN PFCB Fcb OPTIONAL,
    IN PCCB Ccb OPTIONAL
    );

TYPE_OF_OPEN
CdDecodeFileObject (
    IN PIRP_CONTEXT IrpContext,
    IN PFILE_OBJECT FileObject,
    OUT PFCB *Fcb,
    OUT PCCB *Ccb
    );

TYPE_OF_OPEN
CdFastDecodeFileObject (
    IN PFILE_OBJECT FileObject,
    OUT PFCB *Fcb
    );


//
//  Name support routines, implemented in NameSup.c
//

VOID
CdConvertNameToCdName (
    IN PIRP_CONTEXT IrpContext,
    IN OUT PCD_NAME CdName
    );

VOID
CdConvertBigToLittleEndian (
    IN PIRP_CONTEXT IrpContext,
    IN PCHAR BigEndian,
    IN ULONG ByteCount,
    OUT PCHAR LittleEndian
    );

VOID
CdUpcaseName (
    IN PIRP_CONTEXT IrpContext,
    IN PCD_NAME Name,
    IN OUT PCD_NAME UpcaseName
    );

VOID
CdDissectName (
    IN PIRP_CONTEXT IrpContext,
    IN OUT PUNICODE_STRING RemainingName,
    OUT PUNICODE_STRING FinalName
    );

BOOLEAN
CdIs8dot3Name (
    IN PIRP_CONTEXT IrpContext,
    IN UNICODE_STRING FileName
    );

VOID
CdGenerate8dot3Name (
    IN PIRP_CONTEXT IrpContext,
    IN PUNICODE_STRING FileName,
    IN ULONG DirentOffset,
    OUT PWCHAR ShortFileName,
    OUT PUSHORT ShortByteCount
    );

BOOLEAN
CdIsNameInExpression (
    IN PIRP_CONTEXT IrpContext,
    IN PCD_NAME CurrentName,
    IN PCD_NAME SearchExpression,
    IN ULONG  WildcardFlags,
    IN BOOLEAN CheckVersion
    );

ULONG
CdShortNameDirentOffset (
    IN PIRP_CONTEXT IrpContext,
    IN PUNICODE_STRING Name
    );

FSRTL_COMPARISON_RESULT
CdFullCompareNames (
    IN PIRP_CONTEXT IrpContext,
    IN PUNICODE_STRING NameA,
    IN PUNICODE_STRING NameB
    );


//
//  Filesystem control operations.  Implemented in Fsctrl.c
//

NTSTATUS
CdLockVolumeInternal (
    IN PIRP_CONTEXT IrpContext,
    IN PVCB Vcb,
    IN PFILE_OBJECT FileObject OPTIONAL
    );

NTSTATUS
CdUnlockVolumeInternal (
    IN PIRP_CONTEXT IrpContext,
    IN PVCB Vcb,
    IN PFILE_OBJECT FileObject OPTIONAL
    );


//
//  Path table enumeration routines.  Implemented in PathSup.c
//

VOID
CdLookupPathEntry (
    IN PIRP_CONTEXT IrpContext,
    IN ULONG PathEntryOffset,
    IN ULONG Ordinal,
    IN BOOLEAN VerifyBounds,
    IN OUT PCOMPOUND_PATH_ENTRY CompoundPathEntry
    );

BOOLEAN
CdLookupNextPathEntry (
    IN PIRP_CONTEXT IrpContext,
    IN OUT PPATH_ENUM_CONTEXT PathContext,
    IN OUT PPATH_ENTRY PathEntry
    );

BOOLEAN
CdFindPathEntry (
    IN PIRP_CONTEXT IrpContext,
    IN PFCB ParentFcb,
    IN PCD_NAME DirName,
    IN BOOLEAN IgnoreCase,
    IN OUT PCOMPOUND_PATH_ENTRY CompoundPathEntry
    );

VOID
CdUpdatePathEntryName (
    IN PIRP_CONTEXT IrpContext,
    IN OUT PPATH_ENTRY PathEntry,
    IN BOOLEAN IgnoreCase
    );

//
//  VOID
//  CdInitializeCompoundPathEntry (
//      IN PIRP_CONTEXT IrpContext,
//      IN PCOMPOUND_PATH_ENTRY CompoundPathEntry
//      );
//
//  VOID
//  CdCleanupCompoundPathEntry (
//      IN PIRP_CONTEXT IrpContext,
//      IN PCOMPOUND_PATH_ENTRY CompoundPathEntry
//      );
//

#define CdInitializeCompoundPathEntry(IC,CP)                                    \
    RtlZeroMemory( CP, sizeof( COMPOUND_PATH_ENTRY ))

#define CdCleanupCompoundPathEntry(IC,CP)     {                                 \
    CdUnpinData( (IC), &(CP)->PathContext.Bcb );                                \
    if ((CP)->PathContext.AllocatedData) {                                      \
        CdFreePool( &(CP)->PathContext.Data );                                   \
    }                                                                           \
    if (FlagOn( (CP)->PathEntry.Flags, PATH_ENTRY_FLAG_ALLOC_BUFFER )) {        \
        CdFreePool( &(CP)->PathEntry.CdDirName.FileName.Buffer );                \
    }                                                                           \
}


//
//  Largest matching prefix searching routines, implemented in PrefxSup.c
//

VOID
CdInsertPrefix (
    IN PIRP_CONTEXT IrpContext,
    IN PFCB Fcb,
    IN PCD_NAME Name,
    IN BOOLEAN IgnoreCase,
    IN BOOLEAN ShortNameMatch,
    IN PFCB ParentFcb
    );

VOID
CdRemovePrefix (
    IN PIRP_CONTEXT IrpContext,
    IN PFCB Fcb
    );

VOID
CdFindPrefix (
    IN PIRP_CONTEXT IrpContext,
    IN OUT PFCB *CurrentFcb,
    IN OUT PUNICODE_STRING RemainingName,
    IN BOOLEAN IgnoreCase
    );


//
//  Synchronization routines.  Implemented in Resrcsup.c
//
//  The following routines/macros are used to synchronize the in-memory structures.
//
//      Routine/Macro               Synchronizes                            Subsequent
//
//      CdAcquireCdData             Volume Mounts/Dismounts,Vcb Queue       CdReleaseCdData
//      CdAcquireVcbExclusive       Vcb for open/close                      CdReleaseVcb
//      CdAcquireVcbShared          Vcb for open/close                      CdReleaseVcb
//      CdAcquireAllFiles           Locks out operations to all files       CdReleaseAllFiles
//      CdAcquireFileExclusive      Locks out file operations               CdReleaseFile
//      CdAcquireFileShared         Files for file operations               CdReleaseFile
//      CdAcquireFcbExclusive       Fcb for open/close                      CdReleaseFcb
//      CdAcquireFcbShared          Fcb for open/close                      CdReleaseFcb
//      CdLockCdData                Fields in CdData                        CdUnlockCdData
//      CdLockVcb                   Vcb fields, FcbReference, FcbTable      CdUnlockVcb
//      CdLockFcb                   Fcb fields, prefix table, Mcb           CdUnlockFcb
//

typedef enum _TYPE_OF_ACQUIRE {
    
    AcquireExclusive,
    AcquireShared,
    AcquireSharedStarveExclusive

} TYPE_OF_ACQUIRE, *PTYPE_OF_ACQUIRE;

BOOLEAN
CdAcquireResource (
    IN PIRP_CONTEXT IrpContext,
    IN PERESOURCE Resource,
    IN BOOLEAN IgnoreWait,
    IN TYPE_OF_ACQUIRE Type
    );

//
//  BOOLEAN
//  CdAcquireCdData (
//      IN PIRP_CONTEXT IrpContext
//      );
//
//  VOID
//  CdReleaseCdData (
//      IN PIRP_CONTEXT IrpContext
//    );
//
//  BOOLEAN
//  CdAcquireVcbExclusive (
//      IN PIRP_CONTEXT IrpContext,
//      IN PVCB Vcb,
//      IN BOOLEAN IgnoreWait
//      );
//
//  BOOLEAN
//  CdAcquireVcbShared (
//      IN PIRP_CONTEXT IrpContext,
//      IN PVCB Vcb,
//      IN BOOLEAN IgnoreWait
//      );
//
//  VOID
//  CdReleaseVcb (
//      IN PIRP_CONTEXT IrpContext,
//      IN PVCB Vcb
//      );
//
//  VOID
//  CdAcquireAllFiles (
//      IN PIRP_CONTEXT,
//      IN PVCB Vcb
//      );
//
//  VOID
//  CdReleaseAllFiles (
//      IN PIRP_CONTEXT,
//      IN PVCB Vcb
//      );
//
//  VOID
//  CdAcquireFileExclusive (
//      IN PIRP_CONTEXT IrpContext,
//      IN PFCB Fcb,
//      );
//
//  VOID
//  CdAcquireFileShared (
//      IN PIRP_CONTEXT IrpContext,
//      IN PFCB Fcb
//      );
//
//  VOID
//  CdReleaseFile (
//      IN PIRP_CONTEXT IrpContext,
//      IN PFCB Fcb
//    );
//
//  BOOLEAN
//  CdAcquireFcbExclusive (
//      IN PIRP_CONTEXT IrpContext,
//      IN PFCB Fcb,
//      IN BOOLEAN IgnoreWait
//      );
//
//  BOOLEAN
//  CdAcquireFcbShared (
//      IN PIRP_CONTEXT IrpContext,
//      IN PFCB Fcb,
//      IN BOOLEAN IgnoreWait
//      );
//
//  BOOLEAN
//  CdReleaseFcb (
//      IN PIRP_CONTEXT IrpContext,
//      IN PFCB Fcb
//      );
//
//  VOID
//  CdLockCdData (
//      );
//
//  VOID
//  CdUnlockCdData (
//      );
//
//  VOID
//  CdLockVcb (
//      IN PIRP_CONTEXT IrpContext
//      );
//
//  VOID
//  CdUnlockVcb (
//      IN PIRP_CONTEXT IrpContext
//      );
//
//  VOID
//  CdLockFcb (
//      IN PIRP_CONTEXT IrpContext,
//      IN PFCB Fcb
//      );
//
//  VOID
//  CdUnlockFcb (
//      IN PIRP_CONTEXT IrpContext,
//      IN PFCB Fcb
//      );
//


#define CdAcquireCacheForRead( IC)                                                      \
    ExAcquireResourceSharedLite( &(IC)->Vcb->SectorCacheResource, TRUE)
    
#define CdAcquireCacheForUpdate( IC)                                                    \
    ExAcquireResourceExclusiveLite( &(IC)->Vcb->SectorCacheResource, TRUE)
    
#define CdReleaseCache( IC)                                                             \
    ExReleaseResourceLite( &(IC)->Vcb->SectorCacheResource);

#define CdConvertCacheToShared( IC)                                                     \
    ExConvertExclusiveToSharedLite( &(IC)->Vcb->SectorCacheResource);

#define CdAcquireCdData(IC)                                                             \
    ExAcquireResourceExclusiveLite( &CdData.DataResource, TRUE )

#define CdReleaseCdData(IC)                                                             \
    ExReleaseResourceLite( &CdData.DataResource )

#define CdAcquireVcbExclusive(IC,V,I)                                                   \
    CdAcquireResource( (IC), &(V)->VcbResource, (I), AcquireExclusive )

#define CdAcquireVcbShared(IC,V,I)                                                      \
    CdAcquireResource( (IC), &(V)->VcbResource, (I), AcquireShared )

#define CdReleaseVcb(IC,V)                                                              \
    ExReleaseResourceLite( &(V)->VcbResource )

#define CdAcquireAllFiles(IC,V)                                                         \
    CdAcquireResource( (IC), &(V)->FileResource, FALSE, AcquireExclusive )

#define CdReleaseAllFiles(IC,V)                                                         \
    ExReleaseResourceLite( &(V)->FileResource )

#define CdAcquireFileExclusive(IC,F)                                                    \
    CdAcquireResource( (IC), (F)->Resource, FALSE, AcquireExclusive )

#define CdAcquireFileShared(IC,F)                                                       \
    CdAcquireResource( (IC), (F)->Resource, FALSE, AcquireShared )

#define CdAcquireFileSharedStarveExclusive(IC,F)                                        \
    CdAcquireResource( (IC), (F)->Resource, FALSE, AcquireSharedStarveExclusive )

#define CdReleaseFile(IC,F)                                                             \
    ExReleaseResourceLite( (F)->Resource )

#define CdAcquireFcbExclusive(IC,F,I)                                                   \
    CdAcquireResource( (IC), &(F)->FcbNonpaged->FcbResource, (I), AcquireExclusive )

#define CdAcquireFcbShared(IC,F,I)                                                      \
    CdAcquireResource( (IC), &(F)->FcbNonpaged->FcbResource, (I), AcquireShared )

#define CdReleaseFcb(IC,F)                                                              \
    ExReleaseResourceLite( &(F)->FcbNonpaged->FcbResource )

#define CdLockCdData()                                                                  \
    ExAcquireFastMutex( &CdData.CdDataMutex );                                          \
    CdData.CdDataLockThread = PsGetCurrentThread()

#define CdUnlockCdData()                                                                \
    CdData.CdDataLockThread = NULL;                                                     \
    ExReleaseFastMutex( &CdData.CdDataMutex )

#define CdLockVcb(IC,V)                                                                 \
    ExAcquireFastMutex( &(V)->VcbMutex );                                               \
    ASSERT( NULL == (V)->VcbLockThread);                                                \
    (V)->VcbLockThread = PsGetCurrentThread()

#define CdUnlockVcb(IC,V)                                                               \
    ASSERT( NULL != (V)->VcbLockThread);                                                \
    (V)->VcbLockThread = NULL;                                                          \
    ExReleaseFastMutex( &(V)->VcbMutex )

#define CdLockFcb(IC,F) {                                                               \
    PVOID _CurrentThread = PsGetCurrentThread();                                        \
    if (_CurrentThread != (F)->FcbLockThread) {                                         \
        ExAcquireFastMutex( &(F)->FcbNonpaged->FcbMutex );                              \
        ASSERT( (F)->FcbLockCount == 0 );                                               \
        (F)->FcbLockThread = _CurrentThread;                                            \
    }                                                                                   \
    (F)->FcbLockCount += 1;                                                             \
}

#define CdUnlockFcb(IC,F) {                                                             \
    (F)->FcbLockCount -= 1;                                                             \
    if ((F)->FcbLockCount == 0) {                                                       \
        (F)->FcbLockThread = NULL;                                                      \
        ExReleaseFastMutex( &(F)->FcbNonpaged->FcbMutex );                              \
    }                                                                                   \
}

BOOLEAN
CdNoopAcquire (
    IN PVOID Fcb,
    IN BOOLEAN Wait
    );

VOID
CdNoopRelease (
    IN PVOID Fcb
    );

BOOLEAN
CdAcquireForCache (
    IN PFCB Fcb,
    IN BOOLEAN Wait
    );

VOID
CdReleaseFromCache (
    IN PFCB Fcb
    );

VOID
CdAcquireForCreateSection (