570 lines
17 KiB
C
570 lines
17 KiB
C
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/*++
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Copyright (c) 1989 Microsoft Corporation
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Module Name:
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dispatch.c
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Abstract:
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This module contains the dispatch routines for
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ws2ifsl.sys driver
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Author:
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Vadim Eydelman (VadimE) Dec-1996
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Revision History:
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Vadim Eydelman (VadimE) Oct-1997, rewrite to properly handle IRP
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cancellation
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--*/
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#include "precomp.h"
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#ifdef ALLOC_PRAGMA
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#pragma alloc_text (PAGE, DispatchCreate)
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#pragma alloc_text (PAGE, DispatchCleanup)
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#pragma alloc_text (PAGE, DispatchClose)
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#pragma alloc_text (PAGE, DispatchReadWrite)
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#pragma alloc_text (PAGE, DispatchDeviceControl)
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#pragma alloc_text (PAGE, FastIoDeviceControl)
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#endif
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NTSTATUS
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DispatchCreate (
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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)
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/*++
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Routine Description:
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This routine is called as the result of a request to create
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a file associated with WS2IFSL driver device object.
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Arguments:
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DeviceObject - WS2IFSL device object
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Irp - create Irp
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Return Value:
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STATUS_SUCCESS - requested file object can be created
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STATUS_INVALID_PARAMETER - required extened attribute is missing
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or invalid
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STATUS_INSUFFICIENT_RESOURCES - not enough resources to complete
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this request
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--*/
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{
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NTSTATUS status;
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PIO_STACK_LOCATION irpSp;
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PFILE_FULL_EA_INFORMATION eaBuffer;
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PAGED_CODE ();
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// Get extended attribute buffer which identifies the
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// type of file that should be created.
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eaBuffer = Irp->AssociatedIrp.SystemBuffer;
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if (eaBuffer!=NULL) {
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irpSp = IoGetCurrentIrpStackLocation (Irp);
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if ((eaBuffer->EaNameLength==WS2IFSL_SOCKET_EA_NAME_LENGTH)
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&& (strcmp (eaBuffer->EaName, WS2IFSL_SOCKET_EA_NAME)==0)) {
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// This is the request to create socket file
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status = CreateSocketFile (irpSp->FileObject,
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Irp->RequestorMode,
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eaBuffer);
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}
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else if ((eaBuffer->EaNameLength==WS2IFSL_PROCESS_EA_NAME_LENGTH)
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&& (strcmp (eaBuffer->EaName, WS2IFSL_PROCESS_EA_NAME)==0)) {
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// This is the request to create process file
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status = CreateProcessFile (irpSp->FileObject,
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Irp->RequestorMode,
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eaBuffer);
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}
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else
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status = STATUS_INVALID_PARAMETER;
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}
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else
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status = STATUS_INVALID_PARAMETER;
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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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} // DispatchCreate
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NTSTATUS
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DispatchCleanup (
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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)
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/*++
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Routine Description:
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This routine is called when all handles to a file associated with WS2IFSL
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driver device object are closed, so the driver should cleanup all the
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outstanding IRPs.
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Arguments:
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DeviceObject - WS2IFSL device object
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Irp - cleanup Irp
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Return Value:
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STATUS_SUCCESS - cleanup operation completed
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STATUS_PENDING - cleanup operation started and IoCompleteRequest will be
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called when it is done
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--*/
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{
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NTSTATUS status;
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PIO_STACK_LOCATION irpSp;
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ULONG eaNameTag;
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PAGED_CODE ();
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// Get the file type from file object context
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irpSp = IoGetCurrentIrpStackLocation (Irp);
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eaNameTag = *((PULONG)irpSp->FileObject->FsContext);
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// Call appropriate routine based on file type
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switch (eaNameTag) {
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case SOCKET_FILE_EANAME_TAG:
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status = CleanupSocketFile (irpSp->FileObject, Irp);
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break;
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case PROCESS_FILE_EANAME_TAG:
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status = CleanupProcessFile (irpSp->FileObject, Irp);
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break;
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default:
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ASSERTMSG ("Unknown file EA name tag", FALSE);
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status = STATUS_INVALID_HANDLE;
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break;
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}
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// Complete the request if it was not marked pending
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if (status!=STATUS_PENDING) {
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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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}
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return status;
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} // DispatchCleanup
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NTSTATUS
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DispatchClose (
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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)
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/*++
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Routine Description:
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This routine is called when all references to a file associated with WS2IFSL
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driver device object are released and IO system is about to delete the
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file object itself
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Arguments:
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DeviceObject - WS2IFSL device object
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Irp - close Irp
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Return Value:
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STATUS_SUCCESS - close operation completed
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--*/
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{
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NTSTATUS status;
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PIO_STACK_LOCATION irpSp;
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ULONG eaNameTag;
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PAGED_CODE ();
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// Get the file type from file object context
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irpSp = IoGetCurrentIrpStackLocation (Irp);
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eaNameTag = *((PULONG)irpSp->FileObject->FsContext);
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// Call appropriate routine based on file type
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switch (eaNameTag) {
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case SOCKET_FILE_EANAME_TAG:
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CloseSocketFile (irpSp->FileObject);
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status = STATUS_SUCCESS;
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break;
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case PROCESS_FILE_EANAME_TAG:
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CloseProcessFile (irpSp->FileObject);
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status = STATUS_SUCCESS;
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break;
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default:
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ASSERTMSG ("Unknown file EA name tag", FALSE);
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status = STATUS_INVALID_HANDLE;
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break;
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}
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// Complete the request
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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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} // DispatchClose
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NTSTATUS
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DispatchReadWrite (
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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)
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/*++
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Routine Description:
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This routine is called to perform read or write operation on file object.
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It is only supported for socket files.
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Arguments:
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DeviceObject - WS2IFSL device object
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Irp - read/write Irp
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Return Value:
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STATUS_PENDING - operation is passed onto WS2IFSL DLL to execute
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STATUS_CANCELED - operation canceled because WS2IFSL DLL has been unloaded
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STATUS_INVALID_DEVICE_REQUEST - the operation cannot be performed on
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this file object.
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STATUS_INVALID_HANDLE - file object is not valid in the context of
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current process
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--*/
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{
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NTSTATUS status;
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PIO_STACK_LOCATION irpSp;
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ULONG eaNameTag;
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PAGED_CODE ();
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// Get the file type from file object context
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irpSp = IoGetCurrentIrpStackLocation (Irp);
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eaNameTag = *((PULONG)irpSp->FileObject->FsContext);
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// Call appropriate routine based on file type
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switch (eaNameTag) {
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case SOCKET_FILE_EANAME_TAG:
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status = DoSocketReadWrite (irpSp->FileObject, Irp);
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break;
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default:
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ASSERTMSG ("Unknown file EA name tag", FALSE);
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case PROCESS_FILE_EANAME_TAG:
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// This operation is not valid for process files
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status = STATUS_INVALID_DEVICE_REQUEST;
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break;
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}
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// Complete the request if it was not marked pending
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if (status!=STATUS_PENDING) {
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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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}
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return status;
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} // DispatchReadWrite
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NTSTATUS
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DispatchDeviceControl (
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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)
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/*++
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Routine Description:
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This routine is called to perform device control operation on file object.
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Arguments:
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DeviceObject - WS2IFSL device object
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Irp - device control Irp
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Return Value:
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STATUS_SUCCESS - device control operation completed
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STATUS_PENDING - operation is in progress
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STATUS_INVALID_DEVICE_REQUEST - the operation cannot be performed on
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this file object.
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STATUS_INVALID_HANDLE - file object is not valid in the context of
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current process
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--*/
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{
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NTSTATUS status;
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PIO_STACK_LOCATION irpSp;
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ULONG eaNameTag;
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ULONG function;
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PAGED_CODE ();
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// Get the file type from file object context
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irpSp = IoGetCurrentIrpStackLocation (Irp);
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eaNameTag = *((PULONG)irpSp->FileObject->FsContext);
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// Call appropriate routine based on file type
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switch (eaNameTag) {
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case SOCKET_FILE_EANAME_TAG:
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function = WS2IFSL_IOCTL_FUNCTION(SOCKET,irpSp->Parameters.DeviceIoControl.IoControlCode);
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if ((function<sizeof(SocketIoControlMap)/sizeof(SocketIoControlMap[0])) &&
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(SocketIoctlCodeMap[function]==irpSp->Parameters.DeviceIoControl.IoControlCode)) {
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// Use table dispatch to call appropriate internal IOCTL routine
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ASSERTMSG ("Socket file device control requests should have been handled"
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" by FastIo path ", FALSE);
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SocketIoControlMap[function] (
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irpSp->FileObject,
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Irp->RequestorMode,
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irpSp->Parameters.DeviceIoControl.Type3InputBuffer,
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irpSp->Parameters.DeviceIoControl.InputBufferLength,
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Irp->UserBuffer,
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irpSp->Parameters.DeviceIoControl.OutputBufferLength,
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&Irp->IoStatus);
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status = Irp->IoStatus.Status;
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}
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else if ((irpSp->Parameters.DeviceIoControl.IoControlCode==IOCTL_AFD_SEND_DATAGRAM)
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|| (irpSp->Parameters.DeviceIoControl.IoControlCode==IOCTL_AFD_RECEIVE_DATAGRAM)
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|| (irpSp->Parameters.DeviceIoControl.IoControlCode==IOCTL_AFD_RECEIVE))
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// Handle some "popular" afd IOCTLs
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status = DoSocketAfdIoctl (irpSp->FileObject, Irp);
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else {
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WsPrint (DBG_FAILURES,
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("WS2IFSL-%04lx DispatchDeviceControl: Unsupported IOCTL - %lx!!!\n",
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PsGetCurrentProcessId(),
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irpSp->Parameters.DeviceIoControl.IoControlCode
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));
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status = STATUS_INVALID_DEVICE_REQUEST;
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}
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break;
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case PROCESS_FILE_EANAME_TAG:
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function = WS2IFSL_IOCTL_FUNCTION(PROCESS,irpSp->Parameters.DeviceIoControl.IoControlCode);
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if ((function<sizeof(ProcessIoControlMap)/sizeof(ProcessIoControlMap[0])) &&
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(ProcessIoctlCodeMap[function]==irpSp->Parameters.DeviceIoControl.IoControlCode)) {
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// Use table dispatch to call appropriate internal IOCTL routine
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ASSERTMSG ("Process file device control requests should have been handled"
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" by FastIo path ", FALSE);
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ProcessIoControlMap[function] (
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irpSp->FileObject,
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Irp->RequestorMode,
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irpSp->Parameters.DeviceIoControl.Type3InputBuffer,
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irpSp->Parameters.DeviceIoControl.InputBufferLength,
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Irp->UserBuffer,
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irpSp->Parameters.DeviceIoControl.OutputBufferLength,
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&Irp->IoStatus);
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status = Irp->IoStatus.Status;
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}
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else {
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WsPrint (DBG_FAILURES,
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("WS2IFSL-%04lx DispatchDeviceControl: Unsupported IOCTL - %lx!!!\n",
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PsGetCurrentProcessId(),
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irpSp->Parameters.DeviceIoControl.IoControlCode
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));
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status = STATUS_INVALID_DEVICE_REQUEST;
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}
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break;
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default:
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ASSERTMSG ("Unknown file EA name tag", FALSE);
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status = STATUS_INVALID_DEVICE_REQUEST;
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break;
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}
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// Complete the request if it was not marked pending
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if (status!=STATUS_PENDING) {
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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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}
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return status;
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} // DispatchDeviceControl
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BOOLEAN
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FastIoDeviceControl (
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IN PFILE_OBJECT FileObject,
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IN BOOLEAN Wait,
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IN PVOID InputBuffer OPTIONAL,
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IN ULONG InputBufferLength,
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OUT PVOID OutputBuffer OPTIONAL,
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|
IN ULONG OutputBufferLength,
|
||
|
|
IN ULONG IoControlCode,
|
||
|
|
OUT PIO_STATUS_BLOCK IoStatus,
|
||
|
|
IN PDEVICE_OBJECT DeviceObject
|
||
|
|
)
|
||
|
|
/*++
|
||
|
|
|
||
|
|
Routine Description:
|
||
|
|
|
||
|
|
This routine is called to perform device control operation on file object.
|
||
|
|
This is IO system fast path that assumes immediate action
|
||
|
|
|
||
|
|
Arguments:
|
||
|
|
|
||
|
|
FileObject - file object to which request is directed;
|
||
|
|
Wait - ??? (always TRUE);
|
||
|
|
InputBuffer - address of the input buffer;
|
||
|
|
InputBufferLength - size of the input buffer;
|
||
|
|
OutputBuffer - address of the output buffer;
|
||
|
|
OutputBufferLength - size of the output buffer;
|
||
|
|
IoControlCode - code of the operation to be performed;
|
||
|
|
IoStatus - status of the operation returned by the driver:
|
||
|
|
DeviceObject - WS2IFSL device object
|
||
|
|
|
||
|
|
Return Value:
|
||
|
|
|
||
|
|
TRUE - operation completed,
|
||
|
|
FALSE - operation should be preformed using Irps
|
||
|
|
--*/
|
||
|
|
{
|
||
|
|
BOOLEAN done = FALSE;
|
||
|
|
ULONG eaNameTag;
|
||
|
|
ULONG function;
|
||
|
|
|
||
|
|
PAGED_CODE ();
|
||
|
|
|
||
|
|
// Get the file type from file object context
|
||
|
|
eaNameTag = *((PULONG)FileObject->FsContext);
|
||
|
|
|
||
|
|
// Call appropriate routine based on file type
|
||
|
|
switch (eaNameTag) {
|
||
|
|
case SOCKET_FILE_EANAME_TAG:
|
||
|
|
function = WS2IFSL_IOCTL_FUNCTION(SOCKET,IoControlCode);
|
||
|
|
if ((function<sizeof(SocketIoControlMap)/sizeof(SocketIoControlMap[0])) &&
|
||
|
|
(SocketIoctlCodeMap[function]==IoControlCode)) {
|
||
|
|
// Use table dispatch to call appropriate internal IOCTL routine
|
||
|
|
SocketIoControlMap[function] (
|
||
|
|
FileObject,
|
||
|
|
ExGetPreviousMode(),
|
||
|
|
InputBuffer,
|
||
|
|
InputBufferLength,
|
||
|
|
OutputBuffer,
|
||
|
|
OutputBufferLength,
|
||
|
|
IoStatus);
|
||
|
|
done = TRUE;
|
||
|
|
}
|
||
|
|
else if ((IoControlCode==IOCTL_AFD_SEND_DATAGRAM)
|
||
|
|
|| (IoControlCode==IOCTL_AFD_RECEIVE_DATAGRAM)
|
||
|
|
|| (IoControlCode==IOCTL_AFD_RECEIVE))
|
||
|
|
// AFD ioctls can only be handled on "slow" io path (need IRP)
|
||
|
|
NOTHING;
|
||
|
|
else {
|
||
|
|
WsPrint (DBG_FAILURES,
|
||
|
|
("WS2IFSL-%04lx FastIoDeviceControl: Unsupported IOCTL - %lx!!!\n",
|
||
|
|
PsGetCurrentProcessId(), IoControlCode));
|
||
|
|
IoStatus->Status = STATUS_INVALID_DEVICE_REQUEST;
|
||
|
|
done = TRUE;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case PROCESS_FILE_EANAME_TAG:
|
||
|
|
function = WS2IFSL_IOCTL_FUNCTION(PROCESS,IoControlCode);
|
||
|
|
if ((function<sizeof(ProcessIoControlMap)/sizeof(ProcessIoControlMap[0])) &&
|
||
|
|
(ProcessIoctlCodeMap[function]==IoControlCode)) {
|
||
|
|
// Use table dispatch to call appropriate internal IOCTL routine
|
||
|
|
ProcessIoControlMap[function] (
|
||
|
|
FileObject,
|
||
|
|
ExGetPreviousMode(),
|
||
|
|
InputBuffer,
|
||
|
|
InputBufferLength,
|
||
|
|
OutputBuffer,
|
||
|
|
OutputBufferLength,
|
||
|
|
IoStatus);
|
||
|
|
done = TRUE;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
WsPrint (DBG_FAILURES,
|
||
|
|
("WS2IFSL-%04lx FastIoDeviceControl: Unsupported IOCTL - %lx!!!\n",
|
||
|
|
PsGetCurrentProcessId(),IoControlCode));
|
||
|
|
IoStatus->Status = STATUS_INVALID_DEVICE_REQUEST;
|
||
|
|
done = TRUE;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
ASSERTMSG ("Unknown file EA name tag", FALSE);
|
||
|
|
IoStatus->Status = STATUS_INVALID_PARAMETER;
|
||
|
|
IoStatus->Information = 0;
|
||
|
|
done = TRUE;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
return done;
|
||
|
|
} // FastIoDeviceControl
|
||
|
|
|
||
|
|
NTSTATUS
|
||
|
|
DispatchPnP (
|
||
|
|
IN PDEVICE_OBJECT DeviceObject,
|
||
|
|
IN PIRP Irp
|
||
|
|
)
|
||
|
|
/*++
|
||
|
|
|
||
|
|
Routine Description:
|
||
|
|
|
||
|
|
This routine is called to perform PnP control operation on file object.
|
||
|
|
|
||
|
|
Arguments:
|
||
|
|
|
||
|
|
DeviceObject - WS2IFSL device object
|
||
|
|
Irp - PnP Irp
|
||
|
|
|
||
|
|
Return Value:
|
||
|
|
|
||
|
|
STATUS_SUCCESS - device control operation completed
|
||
|
|
STATUS_PENDING - operation is in progress
|
||
|
|
STATUS_INVALID_DEVICE_REQUEST - the operation cannot be performed on
|
||
|
|
this file object.
|
||
|
|
|
||
|
|
--*/
|
||
|
|
{
|
||
|
|
NTSTATUS status;
|
||
|
|
PIO_STACK_LOCATION irpSp;
|
||
|
|
ULONG eaNameTag;
|
||
|
|
|
||
|
|
PAGED_CODE ();
|
||
|
|
|
||
|
|
// Get the file type from file object context
|
||
|
|
irpSp = IoGetCurrentIrpStackLocation (Irp);
|
||
|
|
eaNameTag = *((PULONG)irpSp->FileObject->FsContext);
|
||
|
|
|
||
|
|
// Call appropriate routine based on file type
|
||
|
|
switch (eaNameTag) {
|
||
|
|
case SOCKET_FILE_EANAME_TAG:
|
||
|
|
switch (irpSp->MinorFunction) {
|
||
|
|
case IRP_MN_QUERY_DEVICE_RELATIONS:
|
||
|
|
status = SocketPnPTargetQuery (irpSp->FileObject, Irp);
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
status = STATUS_INVALID_DEVICE_REQUEST;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
ASSERTMSG ("Unknown file EA name tag", FALSE);
|
||
|
|
|
||
|
|
case PROCESS_FILE_EANAME_TAG:
|
||
|
|
status = STATUS_INVALID_DEVICE_REQUEST;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
// Complete the request if it was not marked pending
|
||
|
|
if (status!=STATUS_PENDING) {
|
||
|
|
Irp->IoStatus.Status = status;
|
||
|
|
Irp->IoStatus.Information = 0;
|
||
|
|
IoCompleteRequest (Irp, IO_NO_INCREMENT);
|
||
|
|
}
|
||
|
|
|
||
|
|
return status;
|
||
|
|
}
|