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/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#ifndef _WIN32_WINNT
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# define _WIN32_WINNT 0x0600
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#endif
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#if !defined(_SSIZE_T_) && !defined(_SSIZE_T_DEFINED)
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typedef intptr_t ssize_t;
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# define SSIZE_MAX INTPTR_MAX
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# define _SSIZE_T_
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# define _SSIZE_T_DEFINED
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#endif
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#include <winsock2.h>
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#if defined(__MINGW32__) && !defined(__MINGW64_VERSION_MAJOR)
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typedef struct pollfd {
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SOCKET fd;
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short events;
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short revents;
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} WSAPOLLFD, *PWSAPOLLFD, *LPWSAPOLLFD;
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#endif
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#ifndef LOCALE_INVARIANT
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# define LOCALE_INVARIANT 0x007f
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#endif
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#include <mswsock.h>
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#include <ws2tcpip.h>
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#include <windows.h>
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#include <process.h>
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#include <signal.h>
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#include <fcntl.h>
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#include <sys/stat.h>
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#if defined(_MSC_VER) && _MSC_VER < 1600
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# include "stdint-msvc2008.h"
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#else
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# include <stdint.h>
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#endif
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#include "tree.h"
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#include "threadpool.h"
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#define MAX_PIPENAME_LEN 256
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#ifndef S_IFLNK
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# define S_IFLNK 0xA000
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#endif
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/* Additional signals supported by uv_signal and or uv_kill. The CRT defines
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* the following signals already:
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*
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* #define SIGINT 2
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* #define SIGILL 4
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* #define SIGABRT_COMPAT 6
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* #define SIGFPE 8
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* #define SIGSEGV 11
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* #define SIGTERM 15
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* #define SIGBREAK 21
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* #define SIGABRT 22
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*
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* The additional signals have values that are common on other Unix
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* variants (Linux and Darwin)
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*/
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#define SIGHUP 1
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#define SIGKILL 9
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#define SIGWINCH 28
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/* Redefine NSIG to take SIGWINCH into consideration */
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#if defined(NSIG) && NSIG <= SIGWINCH
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# undef NSIG
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#endif
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#ifndef NSIG
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# define NSIG SIGWINCH + 1
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#endif
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/* The CRT defines SIGABRT_COMPAT as 6, which equals SIGABRT on many unix-like
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* platforms. However MinGW doesn't define it, so we do. */
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#ifndef SIGABRT_COMPAT
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# define SIGABRT_COMPAT 6
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#endif
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/*
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* Guids and typedefs for winsock extension functions
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* Mingw32 doesn't have these :-(
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*/
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#ifndef WSAID_ACCEPTEX
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# define WSAID_ACCEPTEX \
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{0xb5367df1, 0xcbac, 0x11cf, \
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{0x95, 0xca, 0x00, 0x80, 0x5f, 0x48, 0xa1, 0x92}}
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#endif
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#ifndef WSAID_CONNECTEX
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# define WSAID_CONNECTEX \
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{0x25a207b9, 0xddf3, 0x4660, \
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{0x8e, 0xe9, 0x76, 0xe5, 0x8c, 0x74, 0x06, 0x3e}}
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#endif
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#ifndef WSAID_GETACCEPTEXSOCKADDRS
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# define WSAID_GETACCEPTEXSOCKADDRS \
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{0xb5367df2, 0xcbac, 0x11cf, \
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{0x95, 0xca, 0x00, 0x80, 0x5f, 0x48, 0xa1, 0x92}}
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#endif
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#ifndef WSAID_DISCONNECTEX
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# define WSAID_DISCONNECTEX \
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{0x7fda2e11, 0x8630, 0x436f, \
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{0xa0, 0x31, 0xf5, 0x36, 0xa6, 0xee, 0xc1, 0x57}}
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#endif
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#ifndef WSAID_TRANSMITFILE
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# define WSAID_TRANSMITFILE \
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{0xb5367df0, 0xcbac, 0x11cf, \
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{0x95, 0xca, 0x00, 0x80, 0x5f, 0x48, 0xa1, 0x92}}
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#endif
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#if (defined(__MINGW32__) && !defined(__MINGW64_VERSION_MAJOR)) \
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|| (defined(_MSC_VER) && _MSC_VER < 1500)
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typedef BOOL (PASCAL *LPFN_ACCEPTEX)
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(SOCKET sListenSocket,
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SOCKET sAcceptSocket,
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PVOID lpOutputBuffer,
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DWORD dwReceiveDataLength,
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DWORD dwLocalAddressLength,
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DWORD dwRemoteAddressLength,
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LPDWORD lpdwBytesReceived,
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LPOVERLAPPED lpOverlapped);
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typedef BOOL (PASCAL *LPFN_CONNECTEX)
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(SOCKET s,
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const struct sockaddr* name,
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int namelen,
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PVOID lpSendBuffer,
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DWORD dwSendDataLength,
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LPDWORD lpdwBytesSent,
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LPOVERLAPPED lpOverlapped);
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typedef void (PASCAL *LPFN_GETACCEPTEXSOCKADDRS)
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(PVOID lpOutputBuffer,
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DWORD dwReceiveDataLength,
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DWORD dwLocalAddressLength,
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DWORD dwRemoteAddressLength,
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LPSOCKADDR* LocalSockaddr,
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LPINT LocalSockaddrLength,
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LPSOCKADDR* RemoteSockaddr,
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LPINT RemoteSockaddrLength);
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typedef BOOL (PASCAL *LPFN_DISCONNECTEX)
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(SOCKET hSocket,
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LPOVERLAPPED lpOverlapped,
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DWORD dwFlags,
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DWORD reserved);
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typedef BOOL (PASCAL *LPFN_TRANSMITFILE)
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(SOCKET hSocket,
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HANDLE hFile,
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|
|
DWORD nNumberOfBytesToWrite,
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DWORD nNumberOfBytesPerSend,
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|
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LPOVERLAPPED lpOverlapped,
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LPTRANSMIT_FILE_BUFFERS lpTransmitBuffers,
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|
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DWORD dwFlags);
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typedef PVOID RTL_SRWLOCK;
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typedef RTL_SRWLOCK SRWLOCK, *PSRWLOCK;
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#endif
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typedef int (WSAAPI* LPFN_WSARECV)
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(SOCKET socket,
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|
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LPWSABUF buffers,
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|
|
DWORD buffer_count,
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|
|
LPDWORD bytes,
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|
|
LPDWORD flags,
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|
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LPWSAOVERLAPPED overlapped,
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LPWSAOVERLAPPED_COMPLETION_ROUTINE completion_routine);
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typedef int (WSAAPI* LPFN_WSARECVFROM)
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(SOCKET socket,
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|
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LPWSABUF buffers,
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|
|
DWORD buffer_count,
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|
|
LPDWORD bytes,
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|
LPDWORD flags,
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|
|
struct sockaddr* addr,
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|
|
LPINT addr_len,
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|
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LPWSAOVERLAPPED overlapped,
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LPWSAOVERLAPPED_COMPLETION_ROUTINE completion_routine);
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#ifndef _NTDEF_
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typedef LONG NTSTATUS;
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typedef NTSTATUS *PNTSTATUS;
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#endif
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#ifndef RTL_CONDITION_VARIABLE_INIT
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typedef PVOID CONDITION_VARIABLE, *PCONDITION_VARIABLE;
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#endif
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typedef struct _AFD_POLL_HANDLE_INFO {
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HANDLE Handle;
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ULONG Events;
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NTSTATUS Status;
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} AFD_POLL_HANDLE_INFO, *PAFD_POLL_HANDLE_INFO;
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typedef struct _AFD_POLL_INFO {
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LARGE_INTEGER Timeout;
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ULONG NumberOfHandles;
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ULONG Exclusive;
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AFD_POLL_HANDLE_INFO Handles[1];
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} AFD_POLL_INFO, *PAFD_POLL_INFO;
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#define UV_MSAFD_PROVIDER_COUNT 3
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/**
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* It should be possible to cast uv_buf_t[] to WSABUF[]
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* see http://msdn.microsoft.com/en-us/library/ms741542(v=vs.85).aspx
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*/
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typedef struct uv_buf_t {
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ULONG len;
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char* base;
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} uv_buf_t;
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typedef int uv_file;
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typedef SOCKET uv_os_sock_t;
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typedef HANDLE uv_os_fd_t;
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typedef int uv_pid_t;
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typedef HANDLE uv_thread_t;
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typedef HANDLE uv_sem_t;
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typedef CRITICAL_SECTION uv_mutex_t;
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/* This condition variable implementation is based on the SetEvent solution
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|
* (section 3.2) at http://www.cs.wustl.edu/~schmidt/win32-cv-1.html
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|
|
* We could not use the SignalObjectAndWait solution (section 3.4) because
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|
* it want the 2nd argument (type uv_mutex_t) of uv_cond_wait() and
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|
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* uv_cond_timedwait() to be HANDLEs, but we use CRITICAL_SECTIONs.
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*/
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typedef union {
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CONDITION_VARIABLE cond_var;
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struct {
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unsigned int waiters_count;
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|
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CRITICAL_SECTION waiters_count_lock;
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|
|
HANDLE signal_event;
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|
|
HANDLE broadcast_event;
|
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|
|
|
} unused_; /* TODO: retained for ABI compatibility; remove me in v2.x. */
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|
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} uv_cond_t;
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|
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typedef union {
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struct {
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|
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unsigned int num_readers_;
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|
|
CRITICAL_SECTION num_readers_lock_;
|
|
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|
|
HANDLE write_semaphore_;
|
|
|
|
|
} state_;
|
|
|
|
|
/* TODO: remove me in v2.x. */
|
|
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|
|
struct {
|
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|
|
SRWLOCK unused_;
|
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|
|
|
} unused1_;
|
|
|
|
|
/* TODO: remove me in v2.x. */
|
|
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|
|
struct {
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|
|
|
|
uv_mutex_t unused1_;
|
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|
|
uv_mutex_t unused2_;
|
|
|
|
|
} unused2_;
|
|
|
|
|
} uv_rwlock_t;
|
|
|
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|
|
typedef struct {
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|
|
unsigned int n;
|
|
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|
|
unsigned int count;
|
|
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|
|
uv_mutex_t mutex;
|
|
|
|
|
uv_sem_t turnstile1;
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|
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|
|
uv_sem_t turnstile2;
|
|
|
|
|
} uv_barrier_t;
|
|
|
|
|
|
|
|
|
|
typedef struct {
|
|
|
|
|
DWORD tls_index;
|
|
|
|
|
} uv_key_t;
|
|
|
|
|
|
|
|
|
|
#define UV_ONCE_INIT { 0, NULL }
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|
|
|
|
|
|
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|
|
typedef struct uv_once_s {
|
|
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|
|
unsigned char ran;
|
|
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|
|
HANDLE event;
|
|
|
|
|
} uv_once_t;
|
|
|
|
|
|
|
|
|
|
/* Platform-specific definitions for uv_spawn support. */
|
|
|
|
|
typedef unsigned char uv_uid_t;
|
|
|
|
|
typedef unsigned char uv_gid_t;
|
|
|
|
|
|
|
|
|
|
typedef struct uv__dirent_s {
|
|
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|
|
int d_type;
|
|
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|
|
char d_name[1];
|
|
|
|
|
} uv__dirent_t;
|
|
|
|
|
|
|
|
|
|
#define UV_DIR_PRIVATE_FIELDS \
|
|
|
|
|
HANDLE dir_handle; \
|
|
|
|
|
WIN32_FIND_DATAW find_data; \
|
|
|
|
|
BOOL need_find_call;
|
|
|
|
|
|
|
|
|
|
#define HAVE_DIRENT_TYPES
|
|
|
|
|
#define UV__DT_DIR UV_DIRENT_DIR
|
|
|
|
|
#define UV__DT_FILE UV_DIRENT_FILE
|
|
|
|
|
#define UV__DT_LINK UV_DIRENT_LINK
|
|
|
|
|
#define UV__DT_FIFO UV_DIRENT_FIFO
|
|
|
|
|
#define UV__DT_SOCKET UV_DIRENT_SOCKET
|
|
|
|
|
#define UV__DT_CHAR UV_DIRENT_CHAR
|
|
|
|
|
#define UV__DT_BLOCK UV_DIRENT_BLOCK
|
|
|
|
|
|
|
|
|
|
/* Platform-specific definitions for uv_dlopen support. */
|
|
|
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#define UV_DYNAMIC FAR WINAPI
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typedef struct {
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HMODULE handle;
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char* errmsg;
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} uv_lib_t;
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#define UV_LOOP_PRIVATE_FIELDS \
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/* The loop's I/O completion port */ \
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HANDLE iocp; \
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/* The current time according to the event loop. in msecs. */ \
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uint64_t time; \
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/* Tail of a single-linked circular queue of pending reqs. If the queue */ \
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/* is empty, tail_ is NULL. If there is only one item, */ \
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/* tail_->next_req == tail_ */ \
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uv_req_t* pending_reqs_tail; \
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/* Head of a single-linked list of closed handles */ \
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uv_handle_t* endgame_handles; \
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/* TODO(bnoordhuis) Stop heap-allocating |timer_heap| in libuv v2.x. */ \
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void* timer_heap; \
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/* Lists of active loop (prepare / check / idle) watchers */ \
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uv_prepare_t* prepare_handles; \
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uv_check_t* check_handles; \
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uv_idle_t* idle_handles; \
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/* This pointer will refer to the prepare/check/idle handle whose */ \
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/* callback is scheduled to be called next. This is needed to allow */ \
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/* safe removal from one of the lists above while that list being */ \
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/* iterated over. */ \
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uv_prepare_t* next_prepare_handle; \
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uv_check_t* next_check_handle; \
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uv_idle_t* next_idle_handle; \
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/* This handle holds the peer sockets for the fast variant of uv_poll_t */ \
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SOCKET poll_peer_sockets[UV_MSAFD_PROVIDER_COUNT]; \
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/* Counter to keep track of active tcp streams */ \
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unsigned int active_tcp_streams; \
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/* Counter to keep track of active udp streams */ \
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unsigned int active_udp_streams; \
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/* Counter to started timer */ \
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uint64_t timer_counter; \
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/* Threadpool */ \
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void* wq[2]; \
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uv_mutex_t wq_mutex; \
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uv_async_t wq_async;
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#define UV_REQ_TYPE_PRIVATE \
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/* TODO: remove the req suffix */ \
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UV_ACCEPT, \
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UV_FS_EVENT_REQ, \
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UV_POLL_REQ, \
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UV_PROCESS_EXIT, \
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UV_READ, \
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UV_UDP_RECV, \
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UV_WAKEUP, \
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UV_SIGNAL_REQ,
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#define UV_REQ_PRIVATE_FIELDS \
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union { \
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/* Used by I/O operations */ \
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struct { \
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OVERLAPPED overlapped; \
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size_t queued_bytes; \
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} io; \
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} u; \
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struct uv_req_s* next_req;
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#define UV_WRITE_PRIVATE_FIELDS \
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int coalesced; \
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uv_buf_t write_buffer; \
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HANDLE event_handle; \
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HANDLE wait_handle;
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#define UV_CONNECT_PRIVATE_FIELDS \
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/* empty */
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#define UV_SHUTDOWN_PRIVATE_FIELDS \
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/* empty */
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#define UV_UDP_SEND_PRIVATE_FIELDS \
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/* empty */
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#define UV_PRIVATE_REQ_TYPES \
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typedef struct uv_pipe_accept_s { \
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UV_REQ_FIELDS \
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HANDLE pipeHandle; \
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struct uv_pipe_accept_s* next_pending; \
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} uv_pipe_accept_t; \
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\
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typedef struct uv_tcp_accept_s { \
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UV_REQ_FIELDS \
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SOCKET accept_socket; \
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char accept_buffer[sizeof(struct sockaddr_storage) * 2 + 32]; \
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HANDLE event_handle; \
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HANDLE wait_handle; \
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struct uv_tcp_accept_s* next_pending; \
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} uv_tcp_accept_t; \
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\
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typedef struct uv_read_s { \
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UV_REQ_FIELDS \
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HANDLE event_handle; \
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HANDLE wait_handle; \
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} uv_read_t;
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#define uv_stream_connection_fields \
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unsigned int write_reqs_pending; \
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uv_shutdown_t* shutdown_req;
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#define uv_stream_server_fields \
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uv_connection_cb connection_cb;
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#define UV_STREAM_PRIVATE_FIELDS \
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unsigned int reqs_pending; \
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int activecnt; \
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uv_read_t read_req; \
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union { \
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struct { uv_stream_connection_fields } conn; \
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struct { uv_stream_server_fields } serv; \
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} stream;
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#define uv_tcp_server_fields \
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uv_tcp_accept_t* accept_reqs; \
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unsigned int processed_accepts; \
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uv_tcp_accept_t* pending_accepts; \
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LPFN_ACCEPTEX func_acceptex;
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#define uv_tcp_connection_fields \
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uv_buf_t read_buffer; \
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LPFN_CONNECTEX func_connectex;
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#define UV_TCP_PRIVATE_FIELDS \
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SOCKET socket; \
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int delayed_error; \
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union { \
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struct { uv_tcp_server_fields } serv; \
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struct { uv_tcp_connection_fields } conn; \
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} tcp;
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#define UV_UDP_PRIVATE_FIELDS \
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SOCKET socket; \
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unsigned int reqs_pending; \
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int activecnt; \
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uv_req_t recv_req; \
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uv_buf_t recv_buffer; \
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struct sockaddr_storage recv_from; \
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int recv_from_len; \
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uv_udp_recv_cb recv_cb; \
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uv_alloc_cb alloc_cb; \
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LPFN_WSARECV func_wsarecv; \
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LPFN_WSARECVFROM func_wsarecvfrom;
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#define uv_pipe_server_fields \
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int pending_instances; \
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uv_pipe_accept_t* accept_reqs; \
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uv_pipe_accept_t* pending_accepts;
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#define uv_pipe_connection_fields \
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uv_timer_t* eof_timer; \
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uv_write_t dummy; /* TODO: retained for ABI compat; remove this in v2.x. */ \
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DWORD ipc_remote_pid; \
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union { \
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uint32_t payload_remaining; \
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uint64_t dummy; /* TODO: retained for ABI compat; remove this in v2.x. */ \
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} ipc_data_frame; \
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void* ipc_xfer_queue[2]; \
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int ipc_xfer_queue_length; \
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uv_write_t* non_overlapped_writes_tail; \
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CRITICAL_SECTION readfile_thread_lock; \
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volatile HANDLE readfile_thread_handle;
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#define UV_PIPE_PRIVATE_FIELDS \
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HANDLE handle; \
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WCHAR* name; \
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union { \
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struct { uv_pipe_server_fields } serv; \
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struct { uv_pipe_connection_fields } conn; \
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} pipe;
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/* TODO: put the parser states in an union - TTY handles are always half-duplex
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* so read-state can safely overlap write-state. */
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#define UV_TTY_PRIVATE_FIELDS \
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HANDLE handle; \
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union { \
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struct { \
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/* Used for readable TTY handles */ \
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/* TODO: remove me in v2.x. */ \
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HANDLE unused_; \
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uv_buf_t read_line_buffer; \
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HANDLE read_raw_wait; \
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/* Fields used for translating win keystrokes into vt100 characters */ \
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char last_key[8]; \
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unsigned char last_key_offset; \
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unsigned char last_key_len; \
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WCHAR last_utf16_high_surrogate; \
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INPUT_RECORD last_input_record; \
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} rd; \
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struct { \
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/* Used for writable TTY handles */ \
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/* utf8-to-utf16 conversion state */ \
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unsigned int utf8_codepoint; \
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unsigned char utf8_bytes_left; \
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/* eol conversion state */ \
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unsigned char previous_eol; \
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/* ansi parser state */ \
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unsigned char ansi_parser_state; \
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unsigned char ansi_csi_argc; \
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unsigned short ansi_csi_argv[4]; \
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COORD saved_position; \
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WORD saved_attributes; \
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} wr; \
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} tty;
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#define UV_POLL_PRIVATE_FIELDS \
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SOCKET socket; \
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/* Used in fast mode */ \
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SOCKET peer_socket; \
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AFD_POLL_INFO afd_poll_info_1; \
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AFD_POLL_INFO afd_poll_info_2; \
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/* Used in fast and slow mode. */ \
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uv_req_t poll_req_1; \
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uv_req_t poll_req_2; \
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unsigned char submitted_events_1; \
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unsigned char submitted_events_2; \
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unsigned char mask_events_1; \
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unsigned char mask_events_2; \
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unsigned char events;
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#define UV_TIMER_PRIVATE_FIELDS \
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void* heap_node[3]; \
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int unused; \
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uint64_t timeout; \
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uint64_t repeat; \
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uint64_t start_id; \
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uv_timer_cb timer_cb;
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#define UV_ASYNC_PRIVATE_FIELDS \
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struct uv_req_s async_req; \
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uv_async_cb async_cb; \
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/* char to avoid alignment issues */ \
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char volatile async_sent;
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#define UV_PREPARE_PRIVATE_FIELDS \
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uv_prepare_t* prepare_prev; \
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uv_prepare_t* prepare_next; \
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uv_prepare_cb prepare_cb;
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#define UV_CHECK_PRIVATE_FIELDS \
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uv_check_t* check_prev; \
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uv_check_t* check_next; \
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uv_check_cb check_cb;
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#define UV_IDLE_PRIVATE_FIELDS \
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uv_idle_t* idle_prev; \
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uv_idle_t* idle_next; \
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uv_idle_cb idle_cb;
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#define UV_HANDLE_PRIVATE_FIELDS \
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uv_handle_t* endgame_next; \
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unsigned int flags;
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#define UV_GETADDRINFO_PRIVATE_FIELDS \
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struct uv__work work_req; \
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uv_getaddrinfo_cb getaddrinfo_cb; \
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void* alloc; \
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WCHAR* node; \
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WCHAR* service; \
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/* The addrinfoW field is used to store a pointer to the hints, and */ \
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/* later on to store the result of GetAddrInfoW. The final result will */ \
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/* be converted to struct addrinfo* and stored in the addrinfo field. */ \
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struct addrinfoW* addrinfow; \
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struct addrinfo* addrinfo; \
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int retcode;
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#define UV_GETNAMEINFO_PRIVATE_FIELDS \
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struct uv__work work_req; \
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uv_getnameinfo_cb getnameinfo_cb; \
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struct sockaddr_storage storage; \
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int flags; \
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char host[NI_MAXHOST]; \
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char service[NI_MAXSERV]; \
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int retcode;
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#define UV_PROCESS_PRIVATE_FIELDS \
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struct uv_process_exit_s { \
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UV_REQ_FIELDS \
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} exit_req; \
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BYTE* child_stdio_buffer; \
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int exit_signal; \
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HANDLE wait_handle; \
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HANDLE process_handle; \
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volatile char exit_cb_pending;
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#define UV_FS_PRIVATE_FIELDS \
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struct uv__work work_req; \
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int flags; \
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DWORD sys_errno_; \
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union { \
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/* TODO: remove me in 0.9. */ \
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WCHAR* pathw; \
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int fd; \
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} file; \
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union { \
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struct { \
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int mode; \
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WCHAR* new_pathw; \
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int file_flags; \
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int fd_out; \
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unsigned int nbufs; \
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uv_buf_t* bufs; \
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int64_t offset; \
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uv_buf_t bufsml[4]; \
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} info; \
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struct { \
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double atime; \
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double mtime; \
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} time; \
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} fs;
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#define UV_WORK_PRIVATE_FIELDS \
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struct uv__work work_req;
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#define UV_FS_EVENT_PRIVATE_FIELDS \
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struct uv_fs_event_req_s { \
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UV_REQ_FIELDS \
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} req; \
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HANDLE dir_handle; \
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int req_pending; \
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uv_fs_event_cb cb; \
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WCHAR* filew; \
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WCHAR* short_filew; \
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WCHAR* dirw; \
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char* buffer;
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#define UV_SIGNAL_PRIVATE_FIELDS \
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RB_ENTRY(uv_signal_s) tree_entry; \
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struct uv_req_s signal_req; \
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unsigned long pending_signum;
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#ifndef F_OK
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#define F_OK 0
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#endif
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#ifndef R_OK
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#define R_OK 4
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#endif
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#ifndef W_OK
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#define W_OK 2
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#endif
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#ifndef X_OK
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#define X_OK 1
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#endif
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/* fs open() flags supported on this platform: */
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#define UV_FS_O_APPEND _O_APPEND
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#define UV_FS_O_CREAT _O_CREAT
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#define UV_FS_O_EXCL _O_EXCL
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#define UV_FS_O_RANDOM _O_RANDOM
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#define UV_FS_O_RDONLY _O_RDONLY
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#define UV_FS_O_RDWR _O_RDWR
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#define UV_FS_O_SEQUENTIAL _O_SEQUENTIAL
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#define UV_FS_O_SHORT_LIVED _O_SHORT_LIVED
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#define UV_FS_O_TEMPORARY _O_TEMPORARY
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#define UV_FS_O_TRUNC _O_TRUNC
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#define UV_FS_O_WRONLY _O_WRONLY
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/* fs open() flags supported on other platforms (or mapped on this platform): */
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#define UV_FS_O_DIRECT 0x02000000 /* FILE_FLAG_NO_BUFFERING */
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#define UV_FS_O_DIRECTORY 0
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#define UV_FS_O_DSYNC 0x04000000 /* FILE_FLAG_WRITE_THROUGH */
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#define UV_FS_O_EXLOCK 0x10000000 /* EXCLUSIVE SHARING MODE */
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#define UV_FS_O_NOATIME 0
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#define UV_FS_O_NOCTTY 0
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#define UV_FS_O_NOFOLLOW 0
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#define UV_FS_O_NONBLOCK 0
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#define UV_FS_O_SYMLINK 0
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#define UV_FS_O_SYNC 0x08000000 /* FILE_FLAG_WRITE_THROUGH */
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