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
  29 STDCALL
  30 AfdRead(
  31     PDEVICE_OBJECT DeviceObject,
  32     PIRP Irp)
  33 {
  34 #if 1
  35     UNIMPLEMENTED
  36
  37     Irp->IoStatus.Status = STATUS_UNSUCCESSFUL;
  38     Irp->IoStatus.Information = 0;
  39     return STATUS_UNSUCCESSFUL;
  40 #else
  41     PDEVICE_EXTENSION DeviceExt = DeviceObject->DeviceExtension;
  42     PIO_STACK_LOCATION IoSp = IoGetCurrentIrpStackLocation(Irp);
  43     PFILE_OBJECT FileObject = IoSp->FileObject;
  44     NTSTATUS Status;
  45     ULONG Length;
  46     PVOID Buffer;
  47     ULONG Offset;
  48
  49     Length = IoSp->Parameters.Read.Length;
  50     Buffer = MmGetSystemAddressForMdl(Irp->MdlAddress);
  51     Offset = IoSp->Parameters.Read.ByteOffset.u.LowPart;
  52
  53     Status = AfdReadFile(DeviceExt, FileObject, Buffer, Length, Offset);
  54
  55     Irp->IoStatus.Status = Status;
  56     Irp->IoStatus.Information = Length;
  57     IoCompleteRequest(Irp, IO_NO_INCREMENT);
  58     return Status;
  59 #endif
  60 }
  61
  62
  63 NTSTATUS
  64 STDCALL
  65 AfdWrite(
  66     PDEVICE_OBJECT DeviceObject,
  67     PIRP Irp)
  68 {
  69     PDEVICE_EXTENSION DeviceExt = DeviceObject->DeviceExtension;
  70     PIO_STACK_LOCATION IoSp = IoGetCurrentIrpStackLocation(Irp);
  71     PFILE_OBJECT FileObject = IoSp->FileObject;
  72     NTSTATUS Status;
  73     ULONG Length;
  74     PVOID Buffer;
  75     ULONG Offset;
  76     PAFDFCB FCB;
  77     PAFDCCB CCB;
  78
  79     FCB = FileObject->FsContext;
  80     CCB = FileObject->FsContext2;
  81
  82     assert(FCB);
  83     assert(CCB);
  84
  85     Length = IoSp->Parameters.Write.Length;
  86     Buffer = MmGetSystemAddressForMdl(Irp->MdlAddress);
  87     Offset = IoSp->Parameters.Write.ByteOffset.u.LowPart;
  88
  89     AFD_DbgPrint(MAX_TRACE, ("Called. Length (%d)  Buffer (0x%X)  Offset (0x%X)\n",
  90         Length, Buffer, Offset));
  91
  92     assert((FCB->SocketType == SOCK_STREAM) || (FCB->SocketType == SOCK_DGRAM));
  93
  94     switch (FCB->SocketType) {
  95       case SOCK_STREAM:
  96         /* FIXME: Support connectionful communication */
  97         break;
  98       case SOCK_DGRAM:
  99         /* Connectionless communication */
 100         //Status = TdiSendDatagram(FCB->TdiAddressObject, WH2N(2000), 0x7F000001, Buffer, Length);
 101         //if (!NT_SUCCESS(Status)) {
 102           Length = 0;
 103         //}
 104         break;
 105       case SOCK_RAW:
 106         /* FIXME: Support raw communication */
 107         break;
 108     }
 109
 110     Irp->IoStatus.Status = Status;
 111     Irp->IoStatus.Information = Length;
 112     IoCompleteRequest(Irp, IO_NO_INCREMENT);
 113
 114     AFD_DbgPrint(MAX_TRACE, ("Leaving.\n"));
 115
 116     return Status;
 117 }
 118
 119 /* EOF */