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sys: fsctl

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This commit is contained in:
Bill Zissimopoulos
2015-11-24 20:10:29 -08:00
parent e60e63ada0
commit cac74f3b63
7 changed files with 58 additions and 122 deletions
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51
src/sys/fsctl.c
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@ -79,15 +79,10 @@ static NTSTATUS FspFsctlCreateVolume(
{
FSP_FSVRT_DEVICE_EXTENSION *FsvrtDeviceExtension = FspFsvrtDeviceExtension(FsvrtDeviceObject);
FsvrtDeviceExtension->Base.Kind = FspFsvrtDeviceExtensionKind;
FspIoqInitialize(&FsvrtDeviceExtension->TransactIoq);
FspIoqInitialize(&FsvrtDeviceExtension->Ioq);
RtlCopyMemory(FspFsvrtDeviceExtension(FsvrtDeviceObject)->SecurityDescriptorBuf,
SecurityDescriptor, InputBufferLength);
Irp->IoStatus.Information = DeviceName.Length + 1;
Result = FspTransactThreadStart(&FsvrtDeviceExtension->TransactThread,
&FsvrtDeviceExtension->TransactIoq, &FsvrtDeviceExtension->Ioq);
if (!NT_SUCCESS(Result))
IoDeleteDevice(FsvrtDeviceObject);
}
/* free the temporary security descriptor */
@ -125,9 +120,10 @@ static NTSTATUS FspFsvrtTransact(
NTSTATUS Result;
FSP_FSVRT_DEVICE_EXTENSION *FsvrtDeviceExtension = FspFsvrtDeviceExtension(DeviceObject);
PUINT8 SystemBufferEnd;
PUINT8 SystemBufferPtr, SystemBufferEnd;
FSP_TRANSACT_RSP *Response;
PIRP ProcessIrp;
FSP_TRANSACT_REQ *Request;
PIRP ProcessIrp, PendingIrp;
/* access check */
Result = FspSecuritySubjectContextAccessCheck(
@ -155,12 +151,43 @@ static NTSTATUS FspFsvrtTransact(
Response = (PVOID)((PUINT8)Response + Response->Size);
}
if (FspIoqPostIrp(&FsvrtDeviceExtension->TransactIoq, Irp))
Result = STATUS_PENDING;
else
Result = STATUS_ACCESS_DENIED;
/* wait for a pending IRP */
while (0 == (PendingIrp = FspIoqNextPendingIrp(&FsvrtDeviceExtension->Ioq, 300)))
{
if (!FspIoqEnabled(&FsvrtDeviceExtension->Ioq))
return STATUS_CANCELLED;
}
return Result;
/* send any pending IRP's to the user-mode file system */
SystemBufferPtr = SystemBuffer;
SystemBufferEnd = (PUINT8)SystemBuffer + OutputBufferLength;
ASSERT(SystemBufferPtr + FSP_FSCTL_TRANSACT_REQ_SIZEMAX + sizeof(Request->Size) <= SystemBufferEnd);
for (BOOLEAN LoopedOnce = FALSE;; LoopedOnce = TRUE)
{
if (SystemBufferPtr + FSP_FSCTL_TRANSACT_REQ_SIZEMAX + sizeof(Request->Size) > SystemBufferEnd)
break;
if (!FspIoqStartProcessingIrp(&FsvrtDeviceExtension->Ioq, PendingIrp))
{
FspCompleteRequest(PendingIrp, STATUS_CANCELLED);
if (!LoopedOnce)
return STATUS_CANCELLED;
break;
}
Request = PendingIrp->Tail.Overlay.DriverContext[0];
RtlCopyMemory(SystemBufferPtr, Request, Request->Size);
SystemBufferPtr += Request->Size;
PendingIrp = FspIoqNextPendingIrp(&FsvrtDeviceExtension->Ioq, 0);
if (0 == PendingIrp)
break;
}
ASSERT(SystemBufferPtr + sizeof(Request->Size) <= SystemBufferEnd);
RtlZeroMemory(SystemBufferPtr, SystemBufferEnd - SystemBufferPtr);
Irp->IoStatus.Information = SystemBufferPtr - (PUINT8)SystemBuffer;
return STATUS_SUCCESS;
}
static NTSTATUS FspFsctlFileSystemControl(