diff --git a/winsup/cygwin/net.cc b/winsup/cygwin/net.cc index 7834aae9d..3641f96d7 100644 --- a/winsup/cygwin/net.cc +++ b/winsup/cygwin/net.cc @@ -534,18 +534,15 @@ fdsock (cygheap_fdmanip& fd, const device *dev, SOCKET soc) SetHandleInformation. Subsequent socket calls in the child process fail with error 10038, WSAENOTSOCK. - The only way up to Windows Server 2003 to make these sockets usable in - child processes is to duplicate them via WSADuplicateSocket/WSASocket - calls. This requires to start the child process in SUSPENDED state so - we only do this on affected systems. If we recognize a non-inheritable - socket we switch to inheritance/dup via WSADuplicateSocket/WSASocket for - that socket. + There's a neat way to workaround these annoying LSP sockets. WSAIoctl + allows to fetch the underlying base socket, which is a normal, inheritable + IFS handle. So we fetch the base socket, duplicate it, and close the + original socket. Now we have a standard IFS socket which (hopefully) + works as expected. - Starting with Vista there's another neat way to workaround these annoying - LSP sockets. WSAIoctl allows to fetch the underlying base socket, which - is a normal, inheritable IFS handle. So we fetch the base socket, - duplicate it, and close the original socket. Now we have a standard IFS - socket which (hopefully) works as expected. */ + If that doesn't work for some reason, mark the sockets for duplication + via WSADuplicateSocket/WSASocket. This requires to start the child + process in SUSPENDED state so we only do this if really necessary. */ DWORD flags; bool fixup = false; if (!GetHandleInformation ((HANDLE) soc, &flags)