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sys: ioq

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This commit is contained in:
Bill Zissimopoulos
2015-11-23 16:04:08 -08:00
parent 694a39db9a
commit 175ba3205a
4 changed files with 275 additions and 45 deletions
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107
src/sys/driver.h
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@ -113,51 +113,6 @@
#pragma warning(disable:4100) /* unreferenced formal parameter */
#pragma warning(disable:4200) /* zero-sized array in struct/union */
/* types */
enum
{
FspFsctlDeviceExtensionKind = 'C', /* file system control device (e.g. \Device\WinFsp.Disk) */
FspFsvrtDeviceExtensionKind = 'V', /* virtual volume device (e.g. \Device\Volume{GUID}) */
FspFsvolDeviceExtensionKind = 'F', /* file system volume device (unnamed) */
};
typedef struct
{
UINT8 Kind;
} FSP_DEVICE_EXTENSION;
typedef struct
{
FSP_DEVICE_EXTENSION Base;
} FSP_FSCTL_DEVICE_EXTENSION;
typedef struct
{
FSP_DEVICE_EXTENSION Base;
UINT8 SecurityDescriptorBuf[];
} FSP_FSVRT_DEVICE_EXTENSION;
typedef struct
{
FSP_DEVICE_EXTENSION Base;
} FSP_FSVOL_DEVICE_EXTENSION;
static inline
FSP_DEVICE_EXTENSION *FspDeviceExtension(PDEVICE_OBJECT DeviceObject)
{
return DeviceObject->DeviceExtension;
}
static inline
FSP_FSCTL_DEVICE_EXTENSION *FspFsctlDeviceExtension(PDEVICE_OBJECT DeviceObject)
{
return DeviceObject->DeviceExtension;
}
static inline
FSP_FSVRT_DEVICE_EXTENSION *FspFsvrtDeviceExtension(PDEVICE_OBJECT DeviceObject)
{
return DeviceObject->DeviceExtension;
}
static inline
FSP_FSVOL_DEVICE_EXTENSION *FspFsvolDeviceExtension(PDEVICE_OBJECT DeviceObject)
{
return DeviceObject->DeviceExtension;
}
/* driver major functions */
DRIVER_DISPATCH FspCleanup;
DRIVER_DISPATCH FspClose;
@ -190,6 +145,68 @@ FAST_IO_RELEASE_FOR_MOD_WRITE FspReleaseForModWrite;
FAST_IO_ACQUIRE_FOR_CCFLUSH FspAcquireForCcFlush;
FAST_IO_RELEASE_FOR_CCFLUSH FspReleaseForCcFlush;
/* I/O queue */
typedef struct
{
KSPIN_LOCK SpinLock;
int Enabled;
LIST_ENTRY PendingIrpList, ProcessIrpList;
IO_CSQ PendingIoCsq, ProcessIoCsq;
} FSP_IOQ;
VOID FspIoqInitialize(FSP_IOQ *Ioq);
VOID FspIoqEnable(FSP_IOQ *Ioq, int Delta);
BOOLEAN FspIoqPostIrp(FSP_IOQ *Ioq, PIRP Irp);
PIRP FspIoqNextPendingIrp(FSP_IOQ *Ioq);
BOOLEAN FspIoqProcessIrp(FSP_IOQ *Ioq, PIRP Irp);
PIRP FspIoqRemoveProcessIrp(FSP_IOQ *Ioq, UINT_PTR IrpHint);
VOID FspIoqCancelAll(FSP_IOQ *Ioq);
/* device extensions */
enum
{
FspFsctlDeviceExtensionKind = 'C', /* file system control device (e.g. \Device\WinFsp.Disk) */
FspFsvrtDeviceExtensionKind = 'V', /* virtual volume device (e.g. \Device\Volume{GUID}) */
FspFsvolDeviceExtensionKind = 'F', /* file system volume device (unnamed) */
};
typedef struct
{
UINT8 Kind;
} FSP_DEVICE_EXTENSION;
typedef struct
{
FSP_DEVICE_EXTENSION Base;
} FSP_FSCTL_DEVICE_EXTENSION;
typedef struct
{
FSP_DEVICE_EXTENSION Base;
FSP_IOQ Ioq;
UINT8 SecurityDescriptorBuf[];
} FSP_FSVRT_DEVICE_EXTENSION;
typedef struct
{
FSP_DEVICE_EXTENSION Base;
} FSP_FSVOL_DEVICE_EXTENSION;
static inline
FSP_DEVICE_EXTENSION *FspDeviceExtension(PDEVICE_OBJECT DeviceObject)
{
return DeviceObject->DeviceExtension;
}
static inline
FSP_FSCTL_DEVICE_EXTENSION *FspFsctlDeviceExtension(PDEVICE_OBJECT DeviceObject)
{
return DeviceObject->DeviceExtension;
}
static inline
FSP_FSVRT_DEVICE_EXTENSION *FspFsvrtDeviceExtension(PDEVICE_OBJECT DeviceObject)
{
return DeviceObject->DeviceExtension;
}
static inline
FSP_FSVOL_DEVICE_EXTENSION *FspFsvolDeviceExtension(PDEVICE_OBJECT DeviceObject)
{
return DeviceObject->DeviceExtension;
}
/* misc */
NTSTATUS CreateGuid(GUID *Guid);
NTSTATUS SecuritySubjectContextAccessCheck(