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    SubjectRe: [PATCH] sysctl braindamage

    On Sun, Mar 19, 2000 at 02:20:56PM +1100, Rusty Russell wrote:
    > The sysctl internal interface is horrible: if you don't #if
    > CONFIG_SYSCTL everywhere (yuk), you get much bloat, and *worse*,
    > register_sysctl_table() always "fails".

    Yes. Returning a null table if you try to register one is obviously the
    correct thing to do: the caller can then avoid trying to dereference the
    table if we aren't running with CONFIG_SYSCTL.

    > + /* NULL would mean failure. */
    > + return (struct ctl_table_header *)1;

    Eek, that looks _much_ worse! The caller has no idea that this isn't a
    valid pointer.


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