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    SubjectRe: High UID support for Linux
       Date: 	Fri, 20 Nov 1998 19:50:32 -0500 (EST)
    From: "Albert D. Cahalan" <acahalan@cs.uml.edu>

    Your real problems will be system calls. There isn't enough space in
    some of the structs. Sign extension and trunctuation will cause great
    trouble.

    The system call problem is easy; we simply create new system calls that
    return new structures, and let glibc handle the problem of deciding
    whether or not the new system calls are present. The structure which
    glibc exports to the user applications fortunately already supports
    32-bit uid's.

    The only problem them would be for people using libc5 or a.out
    libraries. They would simply not be able to take advantage of > 16bit
    uids on their system.

    - Ted

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