sdk/lib/rossym_new/zwfile.c

   1 /*
   2  * COPYRIGHT:       See COPYING in the top level directory
   3  * PROJECT:         ReactOS kernel
   4  * FILE:            lib/rossym/zwfile.c
   5  * PURPOSE:         File I/O using native functions
   6  *
   7  * PROGRAMMERS:     Ge van Geldorp (gvg@reactos.com)
   8  */
   9
  10 #include <precomp.h>
  11
  12 NTSTATUS RosSymStatus;
  13
  14 BOOLEAN
  15 RosSymZwReadFile(PVOID FileContext, PVOID Buffer, ULONG Size)
  16 {
  17         //NTSTATUS Status;
  18   IO_STATUS_BLOCK IoStatusBlock;
  19
  20   RosSymStatus = ZwReadFile(*((HANDLE *) FileContext),
  21                       0, 0, 0,
  22                       &IoStatusBlock,
  23                       Buffer,
  24                       Size,
  25                       0, 0);
  26
  27   return NT_SUCCESS(RosSymStatus) && IoStatusBlock.Information == Size;
  28 }
  29
  30 BOOLEAN
  31 RosSymZwSeekFile(PVOID FileContext, ULONG_PTR Position)
  32 {
  33         //NTSTATUS Status;
  34   IO_STATUS_BLOCK IoStatusBlock;
  35   FILE_POSITION_INFORMATION NewPosition;
  36
  37   NewPosition.CurrentByteOffset.u.HighPart = 0;
  38   NewPosition.CurrentByteOffset.u.LowPart = Position;
  39   RosSymStatus = ZwSetInformationFile(*((HANDLE *) FileContext),
  40                                 &IoStatusBlock,
  41                                 (PVOID) &NewPosition,
  42                                 sizeof(FILE_POSITION_INFORMATION),
  43                                 FilePositionInformation);
  44
  45   return NT_SUCCESS(RosSymStatus);
  46 }
  47
  48 /* EOF */