reactos/drivers/net/afd/afd/rdwr.c

   1 /*
   2  * COPYRIGHT:   See COPYING in the top level directory
   3  * PROJECT:     ReactOS Ancillary Function Driver
   4  * FILE:        afd/rdwr.c
   5  * PURPOSE:     File object read/write functions
   6  * PROGRAMMERS: Casper S. Hornstrup (chorns@users.sourceforge.net)
   7  * REVISIONS:
   8  *   CSH 01/09-2000 Created
   9  */
  10 #include <afd.h>
  11
  12 NTSTATUS AfdReadFile(
  13     PDEVICE_EXTENSION DeviceExt,
  14     PFILE_OBJECT FileObject,
  15         PVOID Buffer,
  16     ULONG Length,
  17     ULONG Offset)
  18 /*
  19  * FUNCTION: Reads data from a file
  20  */
  21 {
  22     UNIMPLEMENTED
  23
  24     return STATUS_UNSUCCESSFUL;
  25 }
  26
  27
  28 NTSTATUS AfdRead(
  29     PDEVICE_OBJECT DeviceObject,
  30     PIRP Irp)
  31 {
  32 #if 1
  33     UNIMPLEMENTED
  34
  35     Irp->IoStatus.Status = STATUS_UNSUCCESSFUL;
  36     Irp->IoStatus.Information = 0;
  37     return STATUS_UNSUCCESSFUL;
  38 #else
  39     PDEVICE_EXTENSION DeviceExt = DeviceObject->DeviceExtension;
  40     PIO_STACK_LOCATION IoSp = IoGetCurrentIrpStackLocation(Irp);
  41     PFILE_OBJECT FileObject = IoSp->FileObject;
  42     NTSTATUS Status;
  43     ULONG Length;
  44     PVOID Buffer;
  45     ULONG Offset;
  46
  47     Length = IoSp->Parameters.Read.Length;
  48     Buffer = MmGetSystemAddressForMdl(Irp->MdlAddress);
  49     Offset = IoSp->Parameters.Read.ByteOffset.u.LowPart;
  50
  51     Status = AfdReadFile(DeviceExt, FileObject, Buffer, Length, Offset);
  52
  53     Irp->IoStatus.Status = Status;
  54     Irp->IoStatus.Information = Length;
  55     IoCompleteRequest(Irp, IO_NO_INCREMENT);
  56     return Status;
  57 #endif
  58 }
  59
  60
  61 NTSTATUS AfdWrite(
  62     PDEVICE_OBJECT DeviceObject,
  63     PIRP Irp)
  64 {
  65     PDEVICE_EXTENSION DeviceExt = DeviceObject->DeviceExtension;
  66     PIO_STACK_LOCATION IoSp = IoGetCurrentIrpStackLocation(Irp);
  67     PFILE_OBJECT FileObject = IoSp->FileObject;
  68     NTSTATUS Status;
  69     ULONG Length;
  70     PVOID Buffer;
  71     ULONG Offset;
  72     PAFDFCB FCB;
  73     PAFDCCB CCB;
  74
  75     FCB = FileObject->FsContext;
  76     CCB = FileObject->FsContext2;
  77
  78     Length = IoSp->Parameters.Write.Length;
  79     Buffer = MmGetSystemAddressForMdl(Irp->MdlAddress);
  80     Offset = IoSp->Parameters.Write.ByteOffset.u.LowPart;
  81
  82     AFD_DbgPrint(MIN_TRACE, ("Called. Length (%d)  Buffer (0x%X)  Offset (0x%X)\n",
  83         Length, Buffer, Offset));
  84
  85     /* FIXME: Connectionless communication only */
  86     //Status = TdiSendDatagram(FCB->TdiAddressObject, WH2N(2000), 0x7F000001, Buffer, Length);
  87     //if (!NT_SUCCESS(Status))
  88         Length = 0;
  89
  90     Irp->IoStatus.Status = Status;
  91     Irp->IoStatus.Information = Length;
  92     IoCompleteRequest(Irp, IO_NO_INCREMENT);
  93
  94     AFD_DbgPrint(MIN_TRACE, ("Leaving.\n"));
  95
  96     return Status;
  97 }
  98
  99 /* EOF */