mirror of
https://github.com/winfsp/winfsp.git
synced 2025-07-03 17:32:57 -05:00
Major refactoring: WIP
This commit is contained in:
Bill Zissimopoulos
257
src/sys/driver.h
257
src/sys/driver.h
@ -13,6 +13,10 @@
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#include <wdmsec.h>
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#include <winfsp/fsctl.h>
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/* disable warnings */
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#pragma warning(disable:4100) /* unreferenced formal parameter */
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#pragma warning(disable:4200) /* zero-sized array in struct/union */
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#define DRIVER_NAME "WinFsp"
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/* IoCreateDeviceSecure default SDDL's */
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@ -21,6 +25,11 @@
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#define FSP_FSVRT_DEVICE_SDDL "D:P(A;;GA;;;SY)(A;;GA;;;BA)(A;;GR;;;WD)"
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/* System:GENERIC_ALL, Administrators:GENERIC_ALL, World:GENERIC_READ */
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/* misc macros */
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#define FSP_ALLOC_INTERNAL_TAG 'IpsF'
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#define FSP_ALLOC_EXTERNAL_TAG 'XpsF'
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#define FSP_IO_INCREMENT IO_NETWORK_INCREMENT
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/* DEBUGLOG */
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#if DBG
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#define DEBUGLOG(fmt, ...) \
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@ -111,15 +120,12 @@
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if (0 == (IrpSp->Control & SL_PENDING_RETURNED))\
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{ \
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/* if the IRP has not been marked pending already */\
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ASSERT(FspFsvolDeviceExtensionKind == FspDeviceExtension(DeviceObject)->Kind);\
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FSP_FSVOL_DEVICE_EXTENSION *FsvolDeviceExtension =\
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FspFsvolDeviceExtension(DeviceObject);\
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FSP_FSVRT_DEVICE_EXTENSION *FsvrtDeviceExtension =\
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FspFsvrtDeviceExtension(FsvolDeviceExtension->FsvrtDeviceObject);\
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if (!FspIoqPostIrp(&FsvrtDeviceExtension->Ioq, Irp))\
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if (!FspIoqPostIrp(&FsvolDeviceExtension->Ioq, Irp))\
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{ \
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/* this can only happen if the Ioq was stopped */\
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ASSERT(FspIoqStopped(&FsvrtDeviceExtension->Ioq));\
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ASSERT(FspIoqStopped(&FsvolDeviceExtension->Ioq));\
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FspIopCompleteIrp(Irp, Result = STATUS_CANCELLED);\
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} \
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} \
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@ -166,15 +172,6 @@
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goto fsp_leave_label; \
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} while (0,0)
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/* misc macros */
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#define FSP_ALLOC_INTERNAL_TAG 'IpsF'
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#define FSP_ALLOC_EXTERNAL_TAG 'XpsF'
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#define FSP_IO_INCREMENT IO_NETWORK_INCREMENT
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/* disable warnings */
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#pragma warning(disable:4100) /* unreferenced formal parameter */
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#pragma warning(disable:4200) /* zero-sized array in struct/union */
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/* driver major functions */
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_Function_class_(DRIVER_DISPATCH)
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_IRQL_requires_max_(APC_LEVEL)
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@ -189,7 +186,6 @@ _Dispatch_type_(IRP_MJ_DEVICE_CONTROL) FSP_DRIVER_DISPATCH FspDeviceControl;
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_Dispatch_type_(IRP_MJ_DIRECTORY_CONTROL) FSP_DRIVER_DISPATCH FspDirectoryControl;
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_Dispatch_type_(IRP_MJ_FILE_SYSTEM_CONTROL) FSP_DRIVER_DISPATCH FspFileSystemControl;
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_Dispatch_type_(IRP_MJ_FLUSH_BUFFERS) FSP_DRIVER_DISPATCH FspFlushBuffers;
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_Dispatch_type_(IRP_MJ_INTERNAL_DEVICE_CONTROL) FSP_DRIVER_DISPATCH FspInternalDeviceControl;
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_Dispatch_type_(IRP_MJ_LOCK_CONTROL) FSP_DRIVER_DISPATCH FspLockControl;
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_Dispatch_type_(IRP_MJ_QUERY_EA) FSP_DRIVER_DISPATCH FspQueryEa;
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_Dispatch_type_(IRP_MJ_QUERY_INFORMATION) FSP_DRIVER_DISPATCH FspQueryInformation;
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@ -216,28 +212,25 @@ FSP_IOPREP_DISPATCH FspFsvolCreatePrepare;
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FSP_IOCMPL_DISPATCH FspFsvolCleanupComplete;
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FSP_IOCMPL_DISPATCH FspFsvolCloseComplete;
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FSP_IOCMPL_DISPATCH FspFsvolCreateComplete;
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FSP_IOCMPL_DISPATCH FspDeviceControlComplete;
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FSP_IOCMPL_DISPATCH FspDirectoryControlComplete;
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FSP_IOCMPL_DISPATCH FspFileSystemControlComplete;
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FSP_IOCMPL_DISPATCH FspFlushBuffersComplete;
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FSP_IOCMPL_DISPATCH FspFsvolInternalDeviceControlComplete;
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FSP_IOCMPL_DISPATCH FspLockControlComplete;
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FSP_IOCMPL_DISPATCH FspQueryEaComplete;
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FSP_IOCMPL_DISPATCH FspQueryInformationComplete;
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FSP_IOCMPL_DISPATCH FspQuerySecurityComplete;
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FSP_IOCMPL_DISPATCH FspQueryVolumeInformationComplete;
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FSP_IOCMPL_DISPATCH FspReadComplete;
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FSP_IOCMPL_DISPATCH FspSetEaComplete;
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FSP_IOCMPL_DISPATCH FspSetInformationComplete;
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FSP_IOCMPL_DISPATCH FspSetSecurityComplete;
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FSP_IOCMPL_DISPATCH FspSetVolumeInformationComplete;
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FSP_IOCMPL_DISPATCH FspShutdownComplete;
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FSP_IOCMPL_DISPATCH FspWriteComplete;
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FSP_IOCMPL_DISPATCH FspFsvolDeviceControlComplete;
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FSP_IOCMPL_DISPATCH FspFsvolDirectoryControlComplete;
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FSP_IOCMPL_DISPATCH FspFsvolFileSystemControlComplete;
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FSP_IOCMPL_DISPATCH FspFsvolFlushBuffersComplete;
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FSP_IOCMPL_DISPATCH FspFsvolLockControlComplete;
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FSP_IOCMPL_DISPATCH FspFsvolQueryEaComplete;
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FSP_IOCMPL_DISPATCH FspFsvolQueryInformationComplete;
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FSP_IOCMPL_DISPATCH FspFsvolQuerySecurityComplete;
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FSP_IOCMPL_DISPATCH FspFsvolQueryVolumeInformationComplete;
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FSP_IOCMPL_DISPATCH FspFsvolReadComplete;
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FSP_IOCMPL_DISPATCH FspFsvolSetEaComplete;
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FSP_IOCMPL_DISPATCH FspFsvolSetInformationComplete;
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FSP_IOCMPL_DISPATCH FspFsvolSetSecurityComplete;
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FSP_IOCMPL_DISPATCH FspFsvolSetVolumeInformationComplete;
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FSP_IOCMPL_DISPATCH FspFsvolShutdownComplete;
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FSP_IOCMPL_DISPATCH FspFsvolWriteComplete;
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/* fast I/O */
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/* fast I/O and resource acquisition */
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FAST_IO_CHECK_IF_POSSIBLE FspFastIoCheckIfPossible;
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/* resource acquisition */
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FAST_IO_ACQUIRE_FILE FspAcquireFileForNtCreateSection;
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FAST_IO_RELEASE_FILE FspReleaseFileForNtCreateSection;
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FAST_IO_ACQUIRE_FOR_MOD_WRITE FspAcquireForModWrite;
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@ -245,6 +238,52 @@ FAST_IO_RELEASE_FOR_MOD_WRITE FspReleaseForModWrite;
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FAST_IO_ACQUIRE_FOR_CCFLUSH FspAcquireForCcFlush;
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FAST_IO_RELEASE_FOR_CCFLUSH FspReleaseForCcFlush;
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/* memory allocation */
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static inline
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PVOID FspAlloc(SIZE_T Size)
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{
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return ExAllocatePoolWithTag(PagedPool, Size, FSP_ALLOC_INTERNAL_TAG);
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}
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static inline
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PVOID FspAllocNonPaged(SIZE_T Size)
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{
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return ExAllocatePoolWithTag(NonPagedPool, Size, FSP_ALLOC_INTERNAL_TAG);
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}
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static inline
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VOID FspFree(PVOID Pointer)
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{
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ExFreePoolWithTag(Pointer, FSP_ALLOC_INTERNAL_TAG);
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}
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static inline
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PVOID FspAllocExternal(SIZE_T Size)
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{
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return ExAllocatePoolWithTag(PagedPool, Size, FSP_ALLOC_EXTERNAL_TAG);
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}
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static inline
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PVOID FspAllocNonPagedExternal(SIZE_T Size)
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{
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return ExAllocatePoolWithTag(NonPagedPool, Size, FSP_ALLOC_EXTERNAL_TAG);
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}
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static inline
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VOID FspFreeExternal(PVOID Pointer)
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{
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ExFreePool(Pointer);
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}
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/* utility: GUIDs */
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NTSTATUS FspCreateGuid(GUID *Guid);
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/* utility: delayed work queue */
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typedef struct
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{
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KTIMER Timer;
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KDPC Dpc;
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WORK_QUEUE_ITEM WorkQueueItem;
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} FSP_WORK_ITEM_WITH_DELAY;
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VOID FspInitializeWorkItemWithDelay(FSP_WORK_ITEM_WITH_DELAY *WorkItem,
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PWORKER_THREAD_ROUTINE Routine, PVOID Context);
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VOID FspQueueWorkItemWithDelay(FSP_WORK_ITEM_WITH_DELAY *WorkItem, LARGE_INTEGER Timeout);
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/* IRP context */
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#define FspIrpTimestamp(Irp) \
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(*(ULONGLONG *)&(Irp)->Tail.Overlay.DriverContext[0])
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@ -261,8 +300,9 @@ typedef struct
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KEVENT PendingIrpEvent;
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LIST_ENTRY PendingIrpList, ProcessIrpList;
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IO_CSQ PendingIoCsq, ProcessIoCsq;
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VOID (*CompleteCanceledIrp)(PIRP Irp);
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} FSP_IOQ;
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VOID FspIoqInitialize(FSP_IOQ *Ioq);
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VOID FspIoqInitialize(FSP_IOQ *Ioq, VOID (*CompleteCanceledIrp)(PIRP Irp));
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VOID FspIoqStop(FSP_IOQ *Ioq);
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BOOLEAN FspIoqStopped(FSP_IOQ *Ioq);
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VOID FspIoqRemoveExpired(FSP_IOQ *Ioq, PLARGE_INTEGER Timeout);
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@ -289,10 +329,21 @@ VOID FspIopCompleteIrp(PIRP Irp, NTSTATUS Result)
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{
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FspIopCompleteIrpEx(Irp, Result, TRUE);
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}
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VOID FspIopCompleteCanceledIrp(PIRP Irp);
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NTSTATUS FspIopDispatchPrepare(PIRP Irp, FSP_FSCTL_TRANSACT_REQ *Request);
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VOID FspIopDispatchComplete(PIRP Irp, const FSP_FSCTL_TRANSACT_RSP *Response);
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/* device management */
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typedef struct
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{
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UINT64 Identifier;
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PVOID Context;
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} FSP_DEVICE_GENERIC_TABLE_ELEMENT_DATA;
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typedef struct
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{
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RTL_BALANCED_LINKS Header;
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FSP_DEVICE_GENERIC_TABLE_ELEMENT_DATA Data;
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} FSP_DEVICE_GENERIC_TABLE_ELEMENT;
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enum
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{
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FspFsctlDeviceExtensionKind = '\0ltC', /* file system control device (e.g. \Device\WinFsp.Disk) */
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@ -304,62 +355,32 @@ typedef struct
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KSPIN_LOCK SpinLock;
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LONG RefCount;
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ERESOURCE Resource;
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RTL_AVL_TABLE GenericTable;
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PVOID GenericTableElementStorage;
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UINT32 Kind;
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} FSP_DEVICE_EXTENSION;
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typedef struct
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{
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FSP_DEVICE_EXTENSION Base;
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ULONG FsvrtDeviceObjectCount;
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} FSP_FSCTL_DEVICE_EXTENSION;
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typedef struct
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{
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FSP_DEVICE_EXTENSION Base;
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PDEVICE_OBJECT FsctlDeviceObject;
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PDEVICE_OBJECT FsvolDeviceObject;
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PDEVICE_OBJECT FsvrtDeviceObject;
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HANDLE MupHandle;
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BOOLEAN DeletePending;
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FSP_WORK_ITEM_WITH_DELAY DeleteVolumeWorkItem;
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FSP_DEVICE_GENERIC_TABLE_ELEMENT ElementStorage;
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FSP_FSCTL_VOLUME_PARAMS VolumeParams;
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PVPB SwapVpb;
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FSP_IOQ Ioq;
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KSPIN_LOCK ExpirationLock;
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WORK_QUEUE_ITEM ExpirationWorkItem;
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BOOLEAN ExpirationInProgress;
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PVPB SwapVpb;
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BOOLEAN Deleted;
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FSP_FSCTL_DECLSPEC_ALIGN UINT8 SecurityDescriptorBuf[];
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} FSP_FSVRT_DEVICE_EXTENSION;
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typedef struct
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{
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FSP_DEVICE_EXTENSION Base;
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PDEVICE_OBJECT FsvrtDeviceObject;
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RTL_AVL_TABLE GenericTable;
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PVOID GenericTableElementStorage;
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} FSP_FSVOL_DEVICE_EXTENSION;
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typedef struct
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{
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UINT64 Identifier;
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PVOID Context;
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} FSP_DEVICE_GENERIC_TABLE_ELEMENT_DATA;
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typedef struct
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{
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RTL_BALANCED_LINKS Header;
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FSP_DEVICE_GENERIC_TABLE_ELEMENT_DATA Data;
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} FSP_DEVICE_GENERIC_TABLE_ELEMENT;
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static inline
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FSP_DEVICE_EXTENSION *FspDeviceExtension(PDEVICE_OBJECT DeviceObject)
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{
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return DeviceObject->DeviceExtension;
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}
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static inline
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FSP_FSCTL_DEVICE_EXTENSION *FspFsctlDeviceExtension(PDEVICE_OBJECT DeviceObject)
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{
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ASSERT(FspFsctlDeviceExtensionKind == ((FSP_DEVICE_EXTENSION *)DeviceObject->DeviceExtension)->Kind);
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return DeviceObject->DeviceExtension;
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}
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static inline
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FSP_FSVRT_DEVICE_EXTENSION *FspFsvrtDeviceExtension(PDEVICE_OBJECT DeviceObject)
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{
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ASSERT(FspFsvrtDeviceExtensionKind == ((FSP_DEVICE_EXTENSION *)DeviceObject->DeviceExtension)->Kind);
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return DeviceObject->DeviceExtension;
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}
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static inline
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FSP_FSVOL_DEVICE_EXTENSION *FspFsvolDeviceExtension(PDEVICE_OBJECT DeviceObject)
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{
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ASSERT(FspFsvolDeviceExtensionKind == ((FSP_DEVICE_EXTENSION *)DeviceObject->DeviceExtension)->Kind);
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@ -376,12 +397,10 @@ VOID FspDeviceInitComplete(PDEVICE_OBJECT DeviceObject);
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VOID FspDeviceDelete(PDEVICE_OBJECT DeviceObject);
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BOOLEAN FspDeviceRetain(PDEVICE_OBJECT DeviceObject);
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VOID FspDeviceRelease(PDEVICE_OBJECT DeviceObject);
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VOID FspFsctlDeviceVolumeCreated(PDEVICE_OBJECT DeviceObject);
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VOID FspFsctlDeviceVolumeDeleted(PDEVICE_OBJECT DeviceObject);
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PVOID FspFsvolDeviceLookupContext(PDEVICE_OBJECT DeviceObject, UINT64 Identifier);
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PVOID FspFsvolDeviceInsertContext(PDEVICE_OBJECT DeviceObject, UINT64 Identifier, PVOID Context,
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PVOID FspDeviceLookupContext(PDEVICE_OBJECT DeviceObject, UINT64 Identifier);
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PVOID FspDeviceInsertContext(PDEVICE_OBJECT DeviceObject, UINT64 Identifier, PVOID Context,
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FSP_DEVICE_GENERIC_TABLE_ELEMENT *ElementStorage, PBOOLEAN PInserted);
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VOID FspFsvolDeviceDeleteContext(PDEVICE_OBJECT DeviceObject, UINT64 Identifier,
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VOID FspDeviceDeleteContext(PDEVICE_OBJECT DeviceObject, UINT64 Identifier,
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PBOOLEAN PDeleted);
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NTSTATUS FspDeviceCopyList(
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PDEVICE_OBJECT **PDeviceObjects, PULONG PDeviceObjectCount);
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@ -389,6 +408,23 @@ VOID FspDeviceDeleteList(
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PDEVICE_OBJECT *DeviceObjects, ULONG DeviceObjectCount);
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VOID FspDeviceDeleteAll(VOID);
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/* debug */
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#if DBG
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BOOLEAN HasDbgBreakPoint(const char *Function);
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const char *NtStatusSym(NTSTATUS Status);
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const char *IrpMajorFunctionSym(UCHAR MajorFunction);
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const char *IrpMinorFunctionSym(UCHAR MajorFunction, UCHAR MinorFunction);
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const char *IoctlCodeSym(ULONG ControlCode);
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#endif
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/* extern */
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extern PDRIVER_OBJECT FspDriverObject;
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extern PDEVICE_OBJECT FspFsctlDiskDeviceObject;
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extern PDEVICE_OBJECT FspFsctlNetDeviceObject;
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extern FSP_IOPREP_DISPATCH *FspIopPrepareFunction[];
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extern FSP_IOCMPL_DISPATCH *FspIopCompleteFunction[];
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#if 0
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/* file objects */
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#define FspFileContextKind(FsContext) \
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(((FSP_FILE_CONTEXT *)FsContext)->Header.NodeTypeCode)
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@ -451,69 +487,6 @@ VOID FspFileContextRelease(FSP_FILE_CONTEXT *Context)
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FspFileContextDelete(Context);
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}
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/* misc */
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static inline
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PVOID FspAlloc(SIZE_T Size)
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{
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return ExAllocatePoolWithTag(PagedPool, Size, FSP_ALLOC_INTERNAL_TAG);
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}
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static inline
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PVOID FspAllocNonPaged(SIZE_T Size)
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{
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return ExAllocatePoolWithTag(NonPagedPool, Size, FSP_ALLOC_INTERNAL_TAG);
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}
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static inline
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VOID FspFree(PVOID Pointer)
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{
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ExFreePoolWithTag(Pointer, FSP_ALLOC_INTERNAL_TAG);
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}
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static inline
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PVOID FspAllocExternal(SIZE_T Size)
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{
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return ExAllocatePoolWithTag(PagedPool, Size, FSP_ALLOC_EXTERNAL_TAG);
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}
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static inline
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PVOID FspAllocNonPagedExternal(SIZE_T Size)
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{
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return ExAllocatePoolWithTag(NonPagedPool, Size, FSP_ALLOC_EXTERNAL_TAG);
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}
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static inline
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VOID FspFreeExternal(PVOID Pointer)
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{
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ExFreePool(Pointer);
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}
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NTSTATUS FspCreateGuid(GUID *Guid);
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BOOLEAN FspValidRelativeSecurityDescriptor(
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PSECURITY_DESCRIPTOR SecurityDescriptor, ULONG SecurityDescriptorLength,
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SECURITY_INFORMATION RequiredInformation);
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NTSTATUS FspSecuritySubjectContextAccessCheck(
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PSECURITY_DESCRIPTOR SecurityDescriptor, ACCESS_MASK DesiredAccess, KPROCESSOR_MODE AccessMode);
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/* delayed work queue */
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typedef struct
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{
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KTIMER Timer;
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KDPC Dpc;
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WORK_QUEUE_ITEM WorkQueueItem;
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} FSP_WORK_ITEM_WITH_DELAY;
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VOID FspInitializeWorkItemWithDelay(FSP_WORK_ITEM_WITH_DELAY *WorkItem,
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PWORKER_THREAD_ROUTINE Routine, PVOID Context);
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VOID FspQueueWorkItemWithDelay(FSP_WORK_ITEM_WITH_DELAY *WorkItem, LARGE_INTEGER Timeout);
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/* debug */
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#if DBG
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BOOLEAN HasDbgBreakPoint(const char *Function);
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const char *NtStatusSym(NTSTATUS Status);
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const char *IrpMajorFunctionSym(UCHAR MajorFunction);
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const char *IrpMinorFunctionSym(UCHAR MajorFunction, UCHAR MinorFunction);
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const char *IoctlCodeSym(ULONG ControlCode);
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#endif
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/* extern */
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extern PDRIVER_OBJECT FspDriverObject;
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extern PDEVICE_OBJECT FspFsctlDiskDeviceObject;
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extern PDEVICE_OBJECT FspFsctlNetDeviceObject;
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extern FSP_IOPREP_DISPATCH *FspIopPrepareFunction[];
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extern FSP_IOCMPL_DISPATCH *FspIopCompleteFunction[];
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#endif
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