122 lines
3.3 KiB
C++
122 lines
3.3 KiB
C++
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/******************************************************************************\
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* This is a part of the Microsoft Source Code Samples.
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* Copyright 1995 - 1997 Microsoft Corporation.
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* All rights reserved.
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* This source code is only intended as a supplement to
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* Microsoft Development Tools and/or WinHelp documentation.
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* See these sources for detailed information regarding the
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* Microsoft samples programs.
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\******************************************************************************/
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#include <Source/RuntimeInternal.hpp>
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/*++
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Copyright (c) 1997 Microsoft Corporation
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Module Name:
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CreatePipeEx.NT.cpp
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Abstract:
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CreatePipe-like function that lets one or both handles be overlapped
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Author:
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Dave Hart Summer 1997
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Revision History:
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J Reece Wilson 2022: Updated default size to match Linux's 16 page assumption
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Renamed MyCreatePipeEx to CreatePipeEx
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Now using Au atomics
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Added second parameter check
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--*/
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static AuUInt32 gPipeSerialNumber;
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BOOL
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APIENTRY
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CreatePipeEx(
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OUT LPHANDLE lpReadPipe,
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OUT LPHANDLE lpWritePipe,
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IN LPSECURITY_ATTRIBUTES lpPipeAttributes,
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IN DWORD nSize,
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DWORD dwReadMode,
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DWORD dwWriteMode
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)
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{
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HANDLE ReadPipeHandle, WritePipeHandle;
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DWORD dwError;
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char PipeNameBuffer[MAX_PATH];
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//
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// Only one valid OpenMode flag - FILE_FLAG_OVERLAPPED
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//
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if ((dwReadMode | dwWriteMode) & (~FILE_FLAG_OVERLAPPED))
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{
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SetLastError(ERROR_INVALID_PARAMETER);
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return FALSE;
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}
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//
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// Check output arguments are non-null
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//
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if (!lpReadPipe || !lpWritePipe)
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{
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SetLastError(ERROR_INVALID_PARAMETER);
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return FALSE;
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}
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//
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// Set the default timeout to 120 seconds
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//
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//
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// Set the default pipe size
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//
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if (nSize == 0)
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{
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nSize = 16 * AuHwInfo::GetPageSize();
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}
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sprintf(PipeNameBuffer,
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"\\\\.\\Pipe\\AuroraProcessCStandardStream.%08x.%08x",
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GetCurrentProcessId(),
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AuAtomicAdd(&gPipeSerialNumber, 1u)
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);
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ReadPipeHandle = CreateNamedPipeA(
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PipeNameBuffer,
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PIPE_ACCESS_INBOUND | dwReadMode,
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PIPE_TYPE_BYTE | PIPE_WAIT,
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1, // Number of pipes
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nSize, // Out buffer size
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nSize, // In buffer size
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120 * 1000, // Timeout in ms
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lpPipeAttributes
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);
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if (!ReadPipeHandle)
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{
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return FALSE;
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}
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WritePipeHandle = CreateFileA(
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PipeNameBuffer,
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GENERIC_WRITE,
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0, // No sharing
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lpPipeAttributes,
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OPEN_EXISTING,
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FILE_ATTRIBUTE_NORMAL | dwWriteMode,
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NULL // Template file
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);
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if (INVALID_HANDLE_VALUE == WritePipeHandle)
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{
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dwError = GetLastError();
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CloseHandle(ReadPipeHandle);
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SetLastError(dwError);
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return FALSE;
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}
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*lpReadPipe = ReadPipeHandle;
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*lpWritePipe = WritePipeHandle;
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return TRUE;
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}
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