Re: uid_t and gid_t vs. __kernel_uid_t and __kernel_gid_t

[Petr Vandrovec]

On 14 May 01 at 15:00, Khachaturov, Vassilii wrote:

> I had to communicate uid/gid from an application down 
> to a driver, and discovered that uid and gid in user
> space are different from those in kernel space.

ncpfs uses 'unsigned long' in its ncp_mount_data_v4, as MIPS uses
'long' type for uid/gid. Unfortunately it still needs conversions
on some archs, so maybe using u_int64_t is just best solution
(AFAIK as MIPS unsigned long is 64bit, you have to use u_int64_t
if you want same type accross architectures).

Kernel part then just checks wheter uid == (__kernel_uid_t)uid and 
gives up if they differ.
                                    Best regards,
                                        Petr Vandrovec
                                        [e-mail]