On Mon, May 14, 2001 at 09:14:26PM +0000, Petr Vandrovec 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).
Only for the 64 bit ABI and kernel on MIPS have a long data type of 64 bits.
General rule for Linux sizeof(pointer) = sizeof(long).
> Kernel part then just checks wheter uid == (__kernel_uid_t)uid and
> gives up if they differ.
Otherwise funny ones line (u16) 65536 == 0 -> root access could happen ...
Ralf
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This archive was generated by hypermail 2b29 : Wed May 23 2001 - 21:00:24 EST