Leaked source code of windows server 2003
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/*++
Copyright (c) 2000 Microsoft Corporation
Module Name:
vfpacket.h
Abstract:
This header exposes functions used to manage the verifier packet data that
tracks IRPs.
Author:
Adrian J. Oney (adriao) 20-Apr-1998
Environment:
Kernel mode
Revision History:
AdriaO 05/02/2000 - Seperated out from ntos\io\hashirp.h
--*/
//
// Currently, ntddk.h uses up to 0x2000 for Irp->Flags
//
#define IRPFLAG_EXAMINE_MASK 0xC0000000
#define IRPFLAG_EXAMINE_NOT_TRACKED 0x80000000
#define IRPFLAG_EXAMINE_TRACKED 0x40000000
#define IRPFLAG_EXAMINE_UNMARKED 0x00000000
#define TRACKFLAG_ACTIVE 0x00000001
#define IRP_ALLOC_COUNT 8
#define IRP_LOG_ENTRIES 16
typedef enum {
IOV_EVENT_NONE = 0,
IOV_EVENT_IO_ALLOCATE_IRP,
IOV_EVENT_IO_CALL_DRIVER,
IOV_EVENT_IO_CALL_DRIVER_UNWIND,
IOV_EVENT_IO_COMPLETE_REQUEST,
IOV_EVENT_IO_COMPLETION_ROUTINE,
IOV_EVENT_IO_COMPLETION_ROUTINE_UNWIND,
IOV_EVENT_IO_CANCEL_IRP,
IOV_EVENT_IO_FREE_IRP
} IOV_LOG_EVENT;
typedef struct {
IOV_LOG_EVENT Event;
PETHREAD Thread;
PVOID Address;
ULONG_PTR Data;
LARGE_INTEGER TimeStamp;
} IOV_LOG_ENTRY, *PIOV_LOG_ENTRY;
struct _IOV_SESSION_DATA;
struct _IOV_REQUEST_PACKET;
typedef struct _IOV_SESSION_DATA *PIOV_SESSION_DATA;
typedef struct _IOV_REQUEST_PACKET *PIOV_REQUEST_PACKET;
typedef struct _IOV_REQUEST_PACKET {
IOV_DATABASE_HEADER;
ULONG Flags;
KIRQL DepartureIrql; // Irql IRP will be dispatched at.
KIRQL ArrivalIrql; // Irql IRP was sent in at.
LIST_ENTRY SessionHead; // List of all sessions.
CCHAR StackCount; // StackCount of tracked IRP.
ULONG QuotaCharge; // Quota charged against IRP.
PEPROCESS QuotaProcess; // Process quota was charged to.
PIO_COMPLETION_ROUTINE RealIrpCompletionRoutine;
UCHAR RealIrpControl;
PVOID RealIrpContext;
PVOID AllocatorStack[IRP_ALLOC_COUNT];
//
// The following information is for the assertion routines to read.
//
UCHAR TopStackLocation;
CCHAR PriorityBoost; // Boost from IofCompleteRequest
UCHAR LastLocation; // Last location from IofCallDriver
ULONG RefTrackingCount;
//
// This field is only set on surrogate IRPs, and contains the locked system
// VA for the destination of a direct I/O IRP that's being buffered.
//
PUCHAR SystemDestVA;
#if DBG
IOV_LOG_ENTRY LogEntries[IRP_LOG_ENTRIES];
ULONG LogEntryHead;
ULONG LogEntryTail;
#endif
PVERIFIER_SETTINGS_SNAPSHOT VerifierSettings;
PIOV_SESSION_DATA pIovSessionData;
} IOV_REQUEST_PACKET;
PIOV_REQUEST_PACKET
FASTCALL
VfPacketCreateAndLock(
IN PIRP Irp
);
PIOV_REQUEST_PACKET
FASTCALL
VfPacketFindAndLock(
IN PIRP Irp
);
VOID
FASTCALL
VfPacketAcquireLock(
IN PIOV_REQUEST_PACKET IrpTrackingData
);
VOID
FASTCALL
VfPacketReleaseLock(
IN PIOV_REQUEST_PACKET IrpTrackingData
);
VOID
FASTCALL
VfPacketReference(
IN PIOV_REQUEST_PACKET IovPacket,
IN IOV_REFERENCE_TYPE IovRefType
);
VOID
FASTCALL
VfPacketDereference(
IN PIOV_REQUEST_PACKET IovPacket,
IN IOV_REFERENCE_TYPE IovRefType
);
PIOV_SESSION_DATA
FASTCALL
VfPacketGetCurrentSessionData(
IN PIOV_REQUEST_PACKET IovPacket
);
VOID
FASTCALL
VfPacketLogEntry(
IN PIOV_REQUEST_PACKET IovPacket,
IN IOV_LOG_EVENT IovLogEvent,
IN PVOID Address,
IN ULONG_PTR Data
);