I misslead you: it is a smart card-style ioctl ... Philippe
"Martin v. Löwis" wrote: > Philippe Martin wrote: >> The call actually is an IOCtl: depending on the control code, the >> structure has a different format. > > Ah. In that case, I recommend to use the ioctl module; you won't need a > C wrapper, then. > >> Although the number of control codes/structures is finite, it would make >> the wrapper function fairly large. > > *Some* code to handle this will be very large, regardless of how you > write it. > >> You seem to think that building the structure from python would be a >> mistake: why is that ? > > It's very error-prone. You have to match the C structure layout of the > compiler precisely, and you even have to get the alignment right, > something that can't be done reliably in Python. > >> PS: the wrapper also has to work under multiple OSs > > That makes it worse: now you not only have to match the C compiler's > expectation on a single processor, but on different ones. > > Perhaps you should be using ctypes. > > Regards, > Martin -- http://mail.python.org/mailman/listinfo/python-list
