Serial and pread

[Alexandre Julliard]

Izak Burger <izakb at synapp.com> writes:

> I'm currently debugging a problem with serial comms over wine, and I
> see that when a serial device is opened (in server/serial.c) the
> serial_get_info function returns a type of FD_TYPE_DEFAULT, which in
> turn causes the serial device to be read from and written to with
> pread and pwrite in dlls/ntdll/file.c.  Will this even work?  I mean,
> how can you write or read to a serial port while using an offset?

You can't, the pread() call is supposed to fail with ESPIPE, in which
case we fall back to a normal read. Doesn't this work for you?  What
error does the pread() call return?

-- 
Alexandre Julliard
julliard at winehq.org