reactos/lib/rossym/zwfile.c
Timo Kreuzer 9ea495ba33 Create a branch for header work.
svn path=/branches/header-work/; revision=45691
2010-02-26 22:57:55 +00:00

53 lines
1.3 KiB
C

/*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
* FILE: lib/rossym/zwfile.c
* PURPOSE: File I/O using native functions
*
* PROGRAMMERS: Ge van Geldorp (gvg@reactos.com)
*/
#define NTOSAPI
#include <ntddk.h>
#include <reactos/rossym.h>
#include "rossympriv.h"
#define NDEBUG
#include <debug.h>
BOOLEAN
RosSymZwReadFile(PVOID FileContext, PVOID Buffer, ULONG Size)
{
NTSTATUS Status;
IO_STATUS_BLOCK IoStatusBlock;
Status = ZwReadFile(*((HANDLE *) FileContext),
0, 0, 0,
&IoStatusBlock,
Buffer,
Size,
0, 0);
return NT_SUCCESS(Status) && IoStatusBlock.Information == Size;
}
BOOLEAN
RosSymZwSeekFile(PVOID FileContext, ULONG_PTR Position)
{
NTSTATUS Status;
IO_STATUS_BLOCK IoStatusBlock;
FILE_POSITION_INFORMATION NewPosition;
NewPosition.CurrentByteOffset.u.HighPart = 0;
NewPosition.CurrentByteOffset.u.LowPart = Position;
Status = ZwSetInformationFile(*((HANDLE *) FileContext),
&IoStatusBlock,
(PVOID) &NewPosition,
sizeof(FILE_POSITION_INFORMATION),
FilePositionInformation);
return NT_SUCCESS(Status);
}
/* EOF */