lib/tdilib/handle.c

   1 /*
   2  * COPYRIGHT:   See COPYING in the top level directory
   3  * PROJECT:     ReactOS TDI interface
   4  * FILE:        handle.c
   5  * PURPOSE:     TDI transport handle management
   6  */
   7
   8 #include "iphlpapi_private.h"
   9
  10 const PWCHAR TcpFileName = L"\\Device\\Tcp";
  11
  12 NTSTATUS openTcpFile(PHANDLE tcpFile)
  13 {
  14     UNICODE_STRING fileName;
  15     OBJECT_ATTRIBUTES objectAttributes;
  16     IO_STATUS_BLOCK ioStatusBlock;
  17     NTSTATUS status;
  18
  19     RtlInitUnicodeString( &fileName, TcpFileName );
  20
  21     InitializeObjectAttributes( &objectAttributes,
  22                                 &fileName,
  23                                 OBJ_CASE_INSENSITIVE,
  24                                 NULL,
  25                                 NULL );
  26
  27     status = ZwCreateFile( tcpFile,
  28                            SYNCHRONIZE | GENERIC_EXECUTE |
  29                            GENERIC_READ | GENERIC_WRITE,
  30                            &objectAttributes,
  31                            &ioStatusBlock,
  32                            NULL,
  33                            FILE_ATTRIBUTE_NORMAL,
  34                            FILE_SHARE_READ | FILE_SHARE_WRITE,
  35                            FILE_OPEN_IF,
  36                            FILE_SYNCHRONOUS_IO_NONALERT,
  37                            0,
  38                            0 );
  39
  40     /* String does not need to be freed: it points to the constant
  41      * string we provided */
  42
  43     if (!NT_SUCCESS(status))
  44         *tcpFile = INVALID_HANDLE_VALUE;
  45
  46     return status;
  47 }
  48
  49 VOID closeTcpFile( HANDLE h )
  50 {
  51     ASSERT(h != INVALID_HANDLE_VALUE);
  52
  53     NtClose( h );
  54 }