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filedescriptor: probe for pipes between wsl and win32
This is a port of something I found when developing some changes in watchman. When doing something like: `some win32 command | wsl something` That pipe doesn't look like a normal win32 pipe and we'd end up treating it like a socket, but it isn't really a socket either.
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@ -19,9 +19,9 @@ use winapi::um::processthreadsapi::*;
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use winapi::um::winbase::{FILE_TYPE_CHAR, FILE_TYPE_DISK, FILE_TYPE_PIPE};
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use winapi::um::winnt::HANDLE;
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use winapi::um::winsock2::{
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accept, bind, closesocket, connect, getsockname, htonl, ioctlsocket, listen, recv, send,
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WSAPoll, WSASocketW, WSAStartup, INVALID_SOCKET, SOCKET, SOCK_STREAM, WSADATA,
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WSA_FLAG_NO_HANDLE_INHERIT,
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accept, bind, closesocket, connect, getsockname, getsockopt, htonl, ioctlsocket, listen, recv,
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send, WSAGetLastError, WSAPoll, WSASocketW, WSAStartup, INVALID_SOCKET, SOCKET, SOCK_STREAM,
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SOL_SOCKET, SO_ERROR, WSADATA, WSAENOTSOCK, WSA_FLAG_NO_HANDLE_INHERIT,
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};
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pub use winapi::um::winsock2::{POLLERR, POLLHUP, POLLIN, POLLOUT, WSAPOLLFD as pollfd};
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@ -113,7 +113,24 @@ impl OwnedHandle {
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{
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HandleType::Pipe
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} else {
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HandleType::Socket
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// It's probably a socket, but it may be a special device used
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// when piping between WSL and native win32 apps.
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let mut err = 0;
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let mut errsize = std::mem::size_of_val(&err) as _;
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if unsafe {
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getsockopt(
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handle as _,
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SOL_SOCKET,
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SO_ERROR,
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&mut err as *mut _ as *mut i8,
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&mut errsize,
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) != 0
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&& WSAGetLastError() == WSAENOTSOCK
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} {
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HandleType::Pipe
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} else {
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HandleType::Socket
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}
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}
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}
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_ => HandleType::Unknown,
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