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