drivers/network/ndisuio/createclose.c

   1 /*
   2  * COPYRIGHT:   See COPYING in the top level directory
   3  * PROJECT:     ReactOS NDIS User I/O driver
   4  * FILE:        createclose.c
   5  * PURPOSE:     IRP_MJ_CREATE and IRP_MJ_CLOSE handling
   6  * PROGRAMMERS: Cameron Gutman (cameron.gutman@reactos.org)
   7  */
   8
   9 #include "ndisuio.h"
  10
  11 //#define NDEBUG
  12 #include <debug.h>
  13
  14 NTSTATUS
  15 NTAPI
  16 NduDispatchCreate(PDEVICE_OBJECT DeviceObject,
  17                   PIRP Irp)
  18 {
  19     PIO_STACK_LOCATION IrpSp = IoGetCurrentIrpStackLocation(Irp);
  20
  21     ASSERT(DeviceObject == GlobalDeviceObject);
  22
  23     DPRINT("Created file object 0x%x\n", IrpSp->FileObject);
  24
  25     /* This is associated with an adapter during IOCTL_NDISUIO_OPEN_(WRITE_)DEVICE */
  26     IrpSp->FileObject->FsContext = NULL;
  27     IrpSp->FileObject->FsContext2 = NULL;
  28
  29     /* Completed successfully */
  30     Irp->IoStatus.Status = STATUS_SUCCESS;
  31     Irp->IoStatus.Information = FILE_OPENED;
  32     IoCompleteRequest(Irp, IO_NO_INCREMENT);
  33
  34     /* Return success */
  35     return STATUS_SUCCESS;
  36 }
  37
  38 NTSTATUS
  39 NTAPI
  40 NduDispatchClose(PDEVICE_OBJECT DeviceObject,
  41                  PIRP Irp)
  42 {
  43     PIO_STACK_LOCATION IrpSp = IoGetCurrentIrpStackLocation(Irp);
  44     PNDISUIO_ADAPTER_CONTEXT AdapterContext = IrpSp->FileObject->FsContext;
  45     PNDISUIO_OPEN_ENTRY OpenEntry = IrpSp->FileObject->FsContext2;
  46
  47     ASSERT(DeviceObject == GlobalDeviceObject);
  48
  49     DPRINT("Closing file object 0x%x\n", IrpSp->FileObject);
  50
  51     /* Check if this handle was ever associated with an adapter */
  52     if (AdapterContext != NULL)
  53     {
  54         ASSERT(OpenEntry != NULL);
  55
  56         DPRINT("Removing binding to adapter %wZ\n", &AdapterContext->DeviceName);
  57
  58         /* Call the our helper */
  59         DereferenceAdapterContextWithOpenEntry(AdapterContext, OpenEntry);
  60     }
  61
  62     /* Completed */
  63     Irp->IoStatus.Status = STATUS_SUCCESS;
  64     Irp->IoStatus.Information = 0;
  65     IoCompleteRequest(Irp, IO_NO_INCREMENT);
  66
  67     /* Return success */
  68     return STATUS_SUCCESS;
  69 }