Re: High UID support for Linux
Tracy Stenvik (imf@u.washington.edu)
Mon, 28 Dec 1998 12:23:35 -0800 (PST)
> From: Jon Leonard <jbwl@umich.edu>
> Date: Thu, 19 Nov 1998 17:38:39 -0500
> Subject: High UID support for Linux
>
> Has anybody looked seriously at supporting 32 bit UIDs on Linux? We'd
> really like to make Linux a commodity at Umich, but with a user base of
> about 100,000, high UIDs are an absolute requirement. I've only just
> started looking at this, but scanning the include files, it would appear
> that some platforms already support high UIDs, but not i386.
>
> Just for grins, I tried changing the typedef in linux/types.h and
> recompiling the kernel. Wouldn't even boot. Then I noticed that the
> uid and gid fields in ext2 inodes are 16 bits. So it seems like this is
> a project, not than a hack. (This was on 2.0.35.)
>
> There's enough interest in this on campus that we can throw some
> resources at it. If no one else has this one, we could probably do it.
> If someone is doing it, how do I get in touch? Comments? Advice
>
> Regards,
> Jon
We have come up with a 32-bit uid/gid "solution" which interested parties
should look at. It doesn't address certain issues, which are discussed in
the upgrade document, but it does provide 32-bit uid/gid support and could
be used as a basis for further enhancements. See,
ftp://ftp.u.washington.edu/public/imf/linux.upgrade
---
Tracy Stenvik
University Computing Services 354843. University of Washington
email: imf@u.washington.edu voice: (206) 685-3344
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