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https://github.com/reactos/reactos.git
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541 lines
17 KiB
C
541 lines
17 KiB
C
/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS NDIS User I/O driver
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* FILE: ioctl.c
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* PURPOSE: IOCTL handling
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* PROGRAMMERS: Cameron Gutman (cameron.gutman@reactos.org)
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*/
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#include "ndisuio.h"
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//#define NDEBUG
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#include <debug.h>
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static
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NTSTATUS
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WaitForBind(PIRP Irp, PIO_STACK_LOCATION IrpSp)
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{
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/* I've seen several code samples that use this IOCTL but there's
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* no official documentation on it. I'm just implementing it as a no-op
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* right now because I don't see any reason we need it. We handle an open
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* and bind just fine with IRP_MJ_CREATE and IOCTL_NDISUIO_OPEN_DEVICE */
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DPRINT("Wait for bind complete\n");
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Irp->IoStatus.Status = STATUS_SUCCESS;
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Irp->IoStatus.Information = 0;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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return STATUS_SUCCESS;
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}
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static
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NTSTATUS
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QueryBinding(PIRP Irp, PIO_STACK_LOCATION IrpSp)
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{
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PNDISUIO_ADAPTER_CONTEXT AdapterContext = NULL;
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PNDISUIO_QUERY_BINDING QueryBinding = Irp->AssociatedIrp.SystemBuffer;
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ULONG BindingLength = IrpSp->Parameters.DeviceIoControl.InputBufferLength;
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NTSTATUS Status;
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PLIST_ENTRY CurrentEntry;
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KIRQL OldIrql;
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ULONG i;
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ULONG BytesCopied = 0;
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if (QueryBinding && BindingLength >= sizeof(NDISUIO_QUERY_BINDING))
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{
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KeAcquireSpinLock(&GlobalAdapterListLock, &OldIrql);
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i = 0;
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CurrentEntry = GlobalAdapterList.Flink;
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while (CurrentEntry != &GlobalAdapterList)
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{
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if (i == QueryBinding->BindingIndex)
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{
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AdapterContext = CONTAINING_RECORD(CurrentEntry, NDISUIO_ADAPTER_CONTEXT, ListEntry);
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break;
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}
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i++;
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CurrentEntry = CurrentEntry->Flink;
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}
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KeReleaseSpinLock(&GlobalAdapterListLock, OldIrql);
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if (AdapterContext)
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{
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DPRINT("Query binding for index %d is adapter %wZ\n", i, &AdapterContext->DeviceName);
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BytesCopied = sizeof(NDISUIO_QUERY_BINDING);
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if (AdapterContext->DeviceName.Length <= BindingLength - BytesCopied)
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{
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QueryBinding->DeviceNameOffset = BytesCopied;
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QueryBinding->DeviceNameLength = AdapterContext->DeviceName.Length;
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RtlCopyMemory((PUCHAR)QueryBinding + QueryBinding->DeviceNameOffset,
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AdapterContext->DeviceName.Buffer,
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QueryBinding->DeviceNameLength);
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BytesCopied += AdapterContext->DeviceName.Length;
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/* FIXME: Copy description too */
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QueryBinding->DeviceDescrOffset = BytesCopied;
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QueryBinding->DeviceDescrLength = 0;
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/* Successful */
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Status = STATUS_SUCCESS;
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}
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else
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{
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/* Not enough buffer space */
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Status = STATUS_BUFFER_TOO_SMALL;
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}
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}
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else
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{
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/* Invalid index */
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Status = STATUS_NO_MORE_ENTRIES;
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}
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}
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else
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{
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/* Invalid parameters */
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Status = STATUS_INVALID_PARAMETER;
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}
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Irp->IoStatus.Status = Status;
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Irp->IoStatus.Information = BytesCopied;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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return Status;
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}
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#if 0
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static
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NTSTATUS
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CancelPacketRead(PIRP Irp, PIO_STACK_LOCATION IrpSp)
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{
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PNDISUIO_ADAPTER_CONTEXT AdapterContext = IrpSp->FileObject->FsContext;
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PNDISUIO_PACKET_ENTRY PacketEntry;
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NTSTATUS Status;
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/* Indicate a 0-byte packet on the queue so one read returns 0 */
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PacketEntry = ExAllocatePool(PagedPool, sizeof(NDISUIO_PACKET_ENTRY));
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if (PacketEntry)
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{
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PacketEntry->PacketLength = 0;
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ExInterlockedInsertHeadList(&AdapterContext->PacketList,
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&PacketEntry->ListEntry,
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&AdapterContext->Spinlock);
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KeSetEvent(&AdapterContext->PacketReadEvent, IO_NO_INCREMENT, FALSE);
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Status = STATUS_SUCCESS;
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}
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else
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{
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Status = STATUS_NO_MEMORY;
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}
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Irp->IoStatus.Status = Status;
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Irp->IoStatus.Information = 0;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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return Status;
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}
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#endif
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static
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NTSTATUS
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SetAdapterOid(PIRP Irp, PIO_STACK_LOCATION IrpSp)
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{
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PNDISUIO_ADAPTER_CONTEXT AdapterContext = IrpSp->FileObject->FsContext;
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PNDISUIO_SET_OID SetOidRequest;
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NDIS_REQUEST Request;
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ULONG RequestLength;
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NDIS_STATUS Status;
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Irp->IoStatus.Information = 0;
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SetOidRequest = Irp->AssociatedIrp.SystemBuffer;
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RequestLength = IrpSp->Parameters.DeviceIoControl.InputBufferLength;
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if (SetOidRequest && RequestLength >= sizeof(NDIS_OID))
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{
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/* Setup the NDIS request */
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Request.RequestType = NdisRequestSetInformation;
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Request.DATA.SET_INFORMATION.Oid = SetOidRequest->Oid;
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Request.DATA.SET_INFORMATION.InformationBufferLength = RequestLength - sizeof(NDIS_OID);
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if (Request.DATA.SET_INFORMATION.InformationBufferLength != 0)
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{
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Request.DATA.SET_INFORMATION.InformationBuffer = SetOidRequest->Data;
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}
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else
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{
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Request.DATA.SET_INFORMATION.InformationBuffer = NULL;
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}
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Request.DATA.SET_INFORMATION.BytesRead = 0;
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DPRINT("Setting OID 0x%x on adapter %wZ\n", SetOidRequest->Oid, &AdapterContext->DeviceName);
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/* Dispatch the request */
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NdisRequest(&Status,
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AdapterContext->BindingHandle,
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&Request);
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/* Wait for the request */
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if (Status == NDIS_STATUS_PENDING)
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{
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KeWaitForSingleObject(&AdapterContext->AsyncEvent,
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Executive,
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KernelMode,
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FALSE,
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NULL);
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Status = AdapterContext->AsyncStatus;
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}
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/* Return the bytes read */
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if (Status == NDIS_STATUS_INVALID_LENGTH ||
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Status == NDIS_STATUS_BUFFER_TOO_SHORT)
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{
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Status = STATUS_BUFFER_TOO_SMALL;
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}
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else if (Status == NDIS_STATUS_SUCCESS)
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{
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Irp->IoStatus.Information = sizeof(NDIS_OID) + Request.DATA.SET_INFORMATION.BytesRead;
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}
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DPRINT("Final request status: 0x%x (%d)\n", Status, Irp->IoStatus.Information);
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}
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else
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{
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/* Bad parameters */
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Status = STATUS_INVALID_PARAMETER;
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}
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Irp->IoStatus.Status = Status;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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return Status;
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}
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static
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NTSTATUS
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QueryAdapterOid(PIRP Irp, PIO_STACK_LOCATION IrpSp)
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{
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PNDISUIO_ADAPTER_CONTEXT AdapterContext = IrpSp->FileObject->FsContext;
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PNDISUIO_QUERY_OID QueryOidRequest;
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NDIS_REQUEST Request;
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ULONG RequestLength;
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NDIS_STATUS Status;
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Irp->IoStatus.Information = 0;
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QueryOidRequest = Irp->AssociatedIrp.SystemBuffer;
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RequestLength = IrpSp->Parameters.DeviceIoControl.InputBufferLength;
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if (QueryOidRequest && RequestLength >= sizeof(NDIS_OID))
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{
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/* Setup the NDIS request */
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Request.RequestType = NdisRequestQueryInformation;
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Request.DATA.QUERY_INFORMATION.Oid = QueryOidRequest->Oid;
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Request.DATA.QUERY_INFORMATION.InformationBufferLength = RequestLength - sizeof(NDIS_OID);
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if (Request.DATA.QUERY_INFORMATION.InformationBufferLength != 0)
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{
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Request.DATA.QUERY_INFORMATION.InformationBuffer = QueryOidRequest->Data;
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}
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else
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{
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Request.DATA.QUERY_INFORMATION.InformationBuffer = NULL;
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}
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Request.DATA.QUERY_INFORMATION.BytesWritten = 0;
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DPRINT("Querying OID 0x%x on adapter %wZ\n", QueryOidRequest->Oid, &AdapterContext->DeviceName);
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/* Dispatch the request */
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NdisRequest(&Status,
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AdapterContext->BindingHandle,
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&Request);
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/* Wait for the request */
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if (Status == NDIS_STATUS_PENDING)
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{
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KeWaitForSingleObject(&AdapterContext->AsyncEvent,
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Executive,
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KernelMode,
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FALSE,
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NULL);
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Status = AdapterContext->AsyncStatus;
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}
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/* Return the bytes written */
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if (Status == NDIS_STATUS_INVALID_LENGTH ||
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Status == NDIS_STATUS_BUFFER_TOO_SHORT)
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{
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Status = STATUS_BUFFER_TOO_SMALL;
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}
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else if (Status == NDIS_STATUS_SUCCESS)
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{
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Irp->IoStatus.Information = sizeof(NDIS_OID) + Request.DATA.QUERY_INFORMATION.BytesWritten;
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}
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DPRINT("Final request status: 0x%x (%d)\n", Status, Irp->IoStatus.Information);
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}
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else
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{
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/* Bad parameters */
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Status = STATUS_INVALID_PARAMETER;
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}
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Irp->IoStatus.Status = Status;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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return Status;
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}
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static
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NTSTATUS
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OpenDeviceReadWrite(PIRP Irp, PIO_STACK_LOCATION IrpSp)
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{
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PFILE_OBJECT FileObject = IrpSp->FileObject;
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UNICODE_STRING DeviceName;
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ULONG NameLength;
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NTSTATUS Status;
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PNDISUIO_ADAPTER_CONTEXT AdapterContext;
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PNDISUIO_OPEN_ENTRY OpenEntry;
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KIRQL OldIrql;
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NameLength = IrpSp->Parameters.DeviceIoControl.InputBufferLength;
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if (NameLength != 0)
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{
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DeviceName.MaximumLength = DeviceName.Length = NameLength;
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DeviceName.Buffer = Irp->AssociatedIrp.SystemBuffer;
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/* Check if this already has a context */
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AdapterContext = FindAdapterContextByName(&DeviceName);
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if (AdapterContext != NULL)
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{
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DPRINT("Binding file object 0x%x to device %wZ\n", FileObject, &AdapterContext->DeviceName);
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/* Reference the adapter context */
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KeAcquireSpinLock(&AdapterContext->Spinlock, &OldIrql);
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if (AdapterContext->OpenCount != 0)
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{
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/* An open for read-write is exclusive,
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* so we can't have any other open handles */
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KeReleaseSpinLock(&AdapterContext->Spinlock, OldIrql);
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Status = STATUS_INVALID_PARAMETER;
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}
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else
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{
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/* Add a reference */
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ReferenceAdapterContext(AdapterContext);
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Status = STATUS_SUCCESS;
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}
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}
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else
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{
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/* Invalid device name */
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Status = STATUS_INVALID_PARAMETER;
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}
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/* Check that the bind succeeded */
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if (NT_SUCCESS(Status))
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{
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OpenEntry = ExAllocatePool(NonPagedPool, sizeof(*OpenEntry));
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if (OpenEntry)
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{
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/* Set the file object pointer */
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OpenEntry->FileObject = FileObject;
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/* Set the permissions */
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OpenEntry->WriteOnly = FALSE;
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/* Associate this FO with the adapter */
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FileObject->FsContext = AdapterContext;
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FileObject->FsContext2 = OpenEntry;
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/* Add it to the adapter's list */
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InsertTailList(&AdapterContext->OpenEntryList,
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&OpenEntry->ListEntry);
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/* Success */
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KeReleaseSpinLock(&AdapterContext->Spinlock, OldIrql);
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Status = STATUS_SUCCESS;
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}
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else
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{
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/* Remove the reference we added */
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KeReleaseSpinLock(&AdapterContext->Spinlock, OldIrql);
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DereferenceAdapterContextWithOpenEntry(AdapterContext, NULL);
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Status = STATUS_NO_MEMORY;
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}
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}
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}
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else
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{
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/* Invalid device name */
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Status = STATUS_INVALID_PARAMETER;
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}
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Irp->IoStatus.Status = Status;
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Irp->IoStatus.Information = 0;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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return Status;
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}
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#if 0
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static
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NTSTATUS
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OpenDeviceWrite(PIRP Irp, PIO_STACK_LOCATION IrpSp)
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{
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PFILE_OBJECT FileObject = IrpSp->FileObject;
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UNICODE_STRING DeviceName;
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ULONG NameLength;
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NTSTATUS Status;
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PNDISUIO_ADAPTER_CONTEXT AdapterContext;
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PNDISUIO_OPEN_ENTRY OpenEntry;
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KIRQL OldIrql;
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NameLength = IrpSp->Parameters.DeviceIoControl.InputBufferLength;
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if (NameLength != 0)
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{
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DeviceName.MaximumLength = DeviceName.Length = NameLength;
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DeviceName.Buffer = Irp->AssociatedIrp.SystemBuffer;
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/* Check if this already has a context */
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AdapterContext = FindAdapterContextByName(&DeviceName);
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if (AdapterContext != NULL)
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{
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/* Reference the adapter context */
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KeAcquireSpinLock(&AdapterContext->Spinlock, &OldIrql);
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ReferenceAdapterContext(AdapterContext);
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Status = STATUS_SUCCESS;
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}
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else
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{
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/* Invalid device name */
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Status = STATUS_INVALID_PARAMETER;
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}
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/* Check that the bind succeeded */
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if (NT_SUCCESS(Status))
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{
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OpenEntry = ExAllocatePool(NonPagedPool, sizeof(*OpenEntry));
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if (OpenEntry)
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{
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/* Set the file object pointer */
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OpenEntry->FileObject = FileObject;
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/* Associate this FO with the adapter */
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FileObject->FsContext = AdapterContext;
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FileObject->FsContext2 = OpenEntry;
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/* Set permissions */
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OpenEntry->WriteOnly = TRUE;
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/* Add it to the adapter's list */
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InsertTailList(&AdapterContext->OpenEntryList,
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&OpenEntry->ListEntry);
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/* Success */
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KeReleaseSpinLock(&AdapterContext->Spinlock, OldIrql);
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Status = STATUS_SUCCESS;
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}
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else
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{
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/* Remove the reference we added */
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KeReleaseSpinLock(&AdapterContext->Spinlock, OldIrql);
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DereferenceAdapterContext(AdapterContext, NULL);
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Status = STATUS_NO_MEMORY;
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}
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}
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}
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else
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{
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/* Invalid device name */
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Status = STATUS_INVALID_PARAMETER;
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}
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Irp->IoStatus.Status = Status;
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Irp->IoStatus.Information = 0;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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return Status;
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}
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#endif
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NTSTATUS
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NTAPI
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NduDispatchDeviceControl(PDEVICE_OBJECT DeviceObject,
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PIRP Irp)
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{
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PIO_STACK_LOCATION IrpSp = IoGetCurrentIrpStackLocation(Irp);
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PNDISUIO_OPEN_ENTRY OpenEntry;
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ASSERT(DeviceObject == GlobalDeviceObject);
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/* Handle open IOCTLs first */
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switch (IrpSp->Parameters.DeviceIoControl.IoControlCode)
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{
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case IOCTL_NDISUIO_OPEN_DEVICE:
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return OpenDeviceReadWrite(Irp, IrpSp);
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#if 0
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case IOCTL_NDISUIO_OPEN_WRITE_DEVICE:
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return OpenDeviceWrite(Irp, IrpSp);
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#endif
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case IOCTL_NDISUIO_BIND_WAIT:
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return WaitForBind(Irp, IrpSp);
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case IOCTL_NDISUIO_QUERY_BINDING:
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return QueryBinding(Irp, IrpSp);
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default:
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/* Fail if this file object has no adapter associated */
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if (IrpSp->FileObject->FsContext == NULL)
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{
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Irp->IoStatus.Status = STATUS_INVALID_PARAMETER;
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Irp->IoStatus.Information = 0;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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return STATUS_INVALID_PARAMETER;
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}
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/* Now handle write IOCTLs */
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switch (IrpSp->Parameters.DeviceIoControl.IoControlCode)
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{
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case IOCTL_NDISUIO_SET_OID_VALUE:
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return SetAdapterOid(Irp, IrpSp);
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default:
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/* Check that we have read permissions */
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OpenEntry = IrpSp->FileObject->FsContext2;
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if (OpenEntry->WriteOnly)
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{
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Irp->IoStatus.Status = STATUS_INVALID_PARAMETER;
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Irp->IoStatus.Information = 0;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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return STATUS_INVALID_PARAMETER;
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}
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switch (IrpSp->Parameters.DeviceIoControl.IoControlCode)
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{
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#if 0
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case IOCTL_CANCEL_READ:
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return CancelPacketRead(Irp, IrpSp);
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#endif
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case IOCTL_NDISUIO_QUERY_OID_VALUE:
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return QueryAdapterOid(Irp, IrpSp);
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default:
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DPRINT1("Unimplemented\n");
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Irp->IoStatus.Status = STATUS_NOT_IMPLEMENTED;
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Irp->IoStatus.Information = 0;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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return STATUS_NOT_IMPLEMENTED;
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}
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}
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break;
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}
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}
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