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sys: FspIopPostWorkRequestBestEffort

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This commit is contained in:
Bill Zissimopoulos 2016-01-05 16:24:10 -08:00
parent bd5b1e59c1
commit 0bfd946edb
5 changed files with 19 additions and 9 deletions
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4
src/sys/cleanup.c
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@ -94,7 +94,11 @@ static NTSTATUS FspFsvolCleanup(
* from our perspective, because they mean that the file system is going
* away and should correctly tear things down.
*/
if (FspIoqPostIrpNoCap(FsvolDeviceExtension->Ioq, Irp, 0))
return STATUS_PENDING;
else
return STATUS_SUCCESS;
}
VOID FspFsvolCleanupComplete(

6
src/sys/close.c
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@ -62,7 +62,7 @@ static NTSTATUS FspFsvolClose(
FspFileContextRelease(FsContext);
/* create the user-mode file system request; MustSucceed because IRP_MJ_CLOSE cannot fail */
FspIopCreateRequestMustSucceed(Irp, FileNameRequired ? &FsContext->FileName : 0, 0, &Request);
FspIopCreateRequestMustSucceed(0, FileNameRequired ? &FsContext->FileName : 0, 0, &Request);
/* populate the Close request */
Request->Kind = FspFsctlTransactCloseKind;
@ -70,10 +70,10 @@ static NTSTATUS FspFsvolClose(
Request->Req.Close.UserContext2 = UserContext2;
/*
* Post as a MustSucceed work request. This allows us to complete our own IRP
* Post as a BestEffort work request. This allows us to complete our own IRP
* and return immediately.
*/
FspIopPostWorkRequestMustSucceed(FsvolDeviceObject, Request);
FspIopPostWorkRequestBestEffort(FsvolDeviceObject, Request);
/*
* Note that it is still possible for this request to not be delivered,

6
src/sys/driver.h
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@ -377,6 +377,8 @@ PIRP FspIoqEndProcessingIrp(FSP_IOQ *Ioq, UINT_PTR IrpHint);
/* I/O processing */
#define FSP_FSCTL_WORK \
CTL_CODE(FILE_DEVICE_FILE_SYSTEM, 0x800 + 'W', METHOD_NEITHER, FILE_ANY_ACCESS)
#define FSP_FSCTL_WORK_BEST_EFFORT \
CTL_CODE(FILE_DEVICE_FILE_SYSTEM, 0x800 + 'w', METHOD_NEITHER, FILE_ANY_ACCESS)
#define FspIopCreateRequest(I, F, E, P) \
FspIopCreateRequestFunnel(I, F, E, 0, FALSE, P)
#define FspIopCreateRequestMustSucceed(I, F, E, P)\
@ -386,7 +388,7 @@ PIRP FspIoqEndProcessingIrp(FSP_IOQ *Ioq, UINT_PTR IrpHint);
#define FspIopRequestContext(Request, I)\
(*FspIopRequestContextAddress(Request, I))
#define FspIopPostWorkRequest(D, R) FspIopPostWorkRequestFunnel(D, R, FALSE)
#define FspIopPostWorkRequestMustSucceed(D, R)\
#define FspIopPostWorkRequestBestEffort(D, R)\
FspIopPostWorkRequestFunnel(D, R, TRUE)
#define FspIopCompleteIrp(I, R) FspIopCompleteIrpEx(I, R, TRUE)
typedef VOID FSP_IOP_REQUEST_FINI(PVOID Context[3]);
@ -397,7 +399,7 @@ NTSTATUS FspIopCreateRequestFunnel(
VOID FspIopDeleteRequest(FSP_FSCTL_TRANSACT_REQ *Request);
PVOID *FspIopRequestContextAddress(FSP_FSCTL_TRANSACT_REQ *Request, ULONG I);
NTSTATUS FspIopPostWorkRequestFunnel(PDEVICE_OBJECT DeviceObject,
FSP_FSCTL_TRANSACT_REQ *Request, BOOLEAN AllocateIrpMustSucceed);
FSP_FSCTL_TRANSACT_REQ *Request, BOOLEAN BestEffort);
VOID FspIopCompleteIrpEx(PIRP Irp, NTSTATUS Result, BOOLEAN DeviceRelease);
VOID FspIopCompleteCanceledIrp(PIRP Irp);
NTSTATUS FspIopDispatchPrepare(PIRP Irp, FSP_FSCTL_TRANSACT_REQ *Request);

1
src/sys/fsctl.c
View File

@ -61,6 +61,7 @@ static NTSTATUS FspFsvolFileSystemControl(
switch (IrpSp->Parameters.FileSystemControl.FsControlCode)
{
case FSP_FSCTL_WORK:
case FSP_FSCTL_WORK_BEST_EFFORT:
Result = FspVolumeWork(DeviceObject, Irp, IrpSp);
break;
}

9
src/sys/volume.c
View File

@ -606,7 +606,9 @@ NTSTATUS FspVolumeWork(
ASSERT(IRP_MJ_FILE_SYSTEM_CONTROL == IrpSp->MajorFunction);
ASSERT(IRP_MN_USER_FS_REQUEST == IrpSp->MinorFunction);
ASSERT(FSP_FSCTL_TRANSACT == IrpSp->Parameters.FileSystemControl.FsControlCode);
ASSERT(
FSP_FSCTL_WORK == IrpSp->Parameters.FileSystemControl.FsControlCode ||
FSP_FSCTL_WORK_BEST_EFFORT == IrpSp->Parameters.FileSystemControl.FsControlCode);
if (KernelMode != Irp->RequestorMode)
return STATUS_INVALID_DEVICE_REQUEST;
@ -614,6 +616,7 @@ NTSTATUS FspVolumeWork(
NTSTATUS Result;
FSP_FSVOL_DEVICE_EXTENSION *FsvolDeviceExtension = FspFsvolDeviceExtension(FsvolDeviceObject);
FSP_FSCTL_TRANSACT_REQ *Request = IrpSp->Parameters.FileSystemControl.Type3InputBuffer;
BOOLEAN BestEffort = FSP_FSCTL_WORK_BEST_EFFORT == IrpSp->Parameters.FileSystemControl.FsControlCode;
ASSERT(0 == Request->Hint);
@ -622,11 +625,11 @@ NTSTATUS FspVolumeWork(
FspIrpRequest(Irp) = Request;
/*
* Post the IRP to our Ioq; we do this here instead of at IRP_LEAVE_MJ time,
* Post the IRP to our Ioq; we do this here instead of at FSP_LEAVE_MJ time,
* so that we can disassociate the Request on failure and release ownership
* back to the caller.
*/
if (!FspIoqPostIrp(FsvolDeviceExtension->Ioq, Irp, &Result))
if (!FspIoqPostIrpEx(FsvolDeviceExtension->Ioq, Irp, !BestEffort, &Result))
{
Request->Hint = 0;
FspIrpRequest(Irp) = 0;