python types, ino_t and off_t

[Elias M. Mariani]

Hi ports@,
I'm tying to port a python package that uses the dirent struct
defining the fields like this:

_fields_ = (
                    ('d_ino', ctypes.c_uint32),  # must be uint32, not ulong
                    ('d_off', ctypes.c_long),
                    ('d_reclen', ctypes.c_ushort),
                    ('d_type', ctypes.c_ubyte),
                    ('d_namlen', ctypes.c_ubyte),
                    ('d_name', ctypes.c_char * 256),
                )

Now, aren't ino_t and off_t architecture dependent ? If not, how do I
find the length of each types ?
The others are defined in the dirent description.
If dependent of the architecture, I should find a way of using the
real definitions in python...

Cheers.
Elias.