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sys: FSP_FSCTL_WORK

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This commit is contained in:
Bill Zissimopoulos 2015-12-21 15:37:35 -08:00
parent 1bb0b6be10
commit ff3543a4f2
1 changed files with 50 additions and 0 deletions
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50
src/sys/fsctl.c
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@ -19,6 +19,8 @@ static NTSTATUS FspFsctlTransact(
PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp); PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp);
static NTSTATUS FspFsvolFileSystemControl( static NTSTATUS FspFsvolFileSystemControl(
PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp); PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp);
static NTSTATUS FspFsvolWork(
PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp);
FSP_IOCMPL_DISPATCH FspFsvolFileSystemControlComplete; FSP_IOCMPL_DISPATCH FspFsvolFileSystemControlComplete;
FSP_DRIVER_DISPATCH FspFileSystemControl; FSP_DRIVER_DISPATCH FspFileSystemControl;
@ -30,6 +32,7 @@ FSP_DRIVER_DISPATCH FspFileSystemControl;
#pragma alloc_text(PAGE, FspFsctlDeleteVolumeDelayed) #pragma alloc_text(PAGE, FspFsctlDeleteVolumeDelayed)
#pragma alloc_text(PAGE, FspFsctlTransact) #pragma alloc_text(PAGE, FspFsctlTransact)
#pragma alloc_text(PAGE, FspFsvolFileSystemControl) #pragma alloc_text(PAGE, FspFsvolFileSystemControl)
#pragma alloc_text(PAGE, FspFsvolWork)
#pragma alloc_text(PAGE, FspFsvolFileSystemControlComplete) #pragma alloc_text(PAGE, FspFsvolFileSystemControlComplete)
#pragma alloc_text(PAGE, FspFileSystemControl) #pragma alloc_text(PAGE, FspFileSystemControl)
#endif #endif
@ -61,6 +64,7 @@ static NTSTATUS FspFsctlFileSystemControl(
break; break;
#endif #endif
} }
return Result; return Result;
} }
@ -531,8 +535,54 @@ static NTSTATUS FspFsvolFileSystemControl(
switch (IrpSp->MinorFunction) switch (IrpSp->MinorFunction)
{ {
case IRP_MN_USER_FS_REQUEST: case IRP_MN_USER_FS_REQUEST:
switch (IrpSp->Parameters.FileSystemControl.FsControlCode)
{
case FSP_FSCTL_WORK:
Result = FspFsvolWork(DeviceObject, Irp, IrpSp);
break;
}
break; break;
} }
return Result;
}
static NTSTATUS FspFsvolWork(
PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
{
PAGED_CODE();
if (KernelMode != Irp->RequestorMode)
return STATUS_ACCESS_DENIED;
NTSTATUS Result;
FSP_FSVOL_DEVICE_EXTENSION *FsvolDeviceExtension = FspFsvolDeviceExtension(DeviceObject);
FSP_FSCTL_TRANSACT_REQ *Request = IrpSp->Parameters.FileSystemControl.Type3InputBuffer;
ASSERT(0 == Request->Hint);
/* associate the passed Request with our Irp; acquire ownership of the Request */
Request->Hint = (UINT_PTR)Irp;
FspIrpRequest(Irp) = Request;
/*
* Post the IRP to our Ioq; we do this here instead of at IRP_LEAVE_MJ time,
* so that we can disassociate the Request on failure and release ownership
* back to the caller.
*/
if (!FspIoqPostIrp(&FsvolDeviceExtension->Ioq, Irp))
{
/* this can only happen if the Ioq was stopped */
ASSERT(FspIoqStopped(&FsvolDeviceExtension->Ioq));
Request->Hint = 0;
FspIrpRequest(Irp) = 0;
Result = STATUS_CANCELLED;
}
else
Result = STATUS_PENDING;
return Result; return Result;
} }