[Bug 51232] New: calling WsaGetLastError() after calling getsockopt() with a file descriptor that is not a socket differs from Windows

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=51232

Bug ID: 51232
           Summary: calling WsaGetLastError() after calling getsockopt()
                    with a file descriptor that is not a socket differs
                    from Windows
           Product: Wine
           Version: 5.0.3
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Program: ZOC Terminal 8.02.4 (x64)

int err, rc, type= 0, fd;
        socklen_t type_len= sizeof(type);
        fd= open("C:\somefile.txt", O_RDONLY);
        if (fd==-1)
             return;
        // fd is now a file descriptor for a file, not a socket.   
        rc= getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&type, &type_len);
        err= WSAGetLastError();
        notasocket= (rc==-1 &&(err==WSAENOTSOCK);
        // notasocket is now FALSE, because Windows returns WSAENOTSOCK, but
Wine returns WSAEBADF
        // Linux returns ENOTSOCK, so the Windows WSAENOTSOCK is the best
representation of that