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    SubjectRe: [PATCH] override RLIMIT_SIGPENDING for non-RT signals
    * Roland McGrath (roland@redhat.com) wrote:
    > Indeed, I think your patch does not go far enough. I can read POSIX to say
    > that the siginfo_t data must be available when `kill' was used, as well.

    How? I only see reference to filling in SI_USER for rt signals?
    Just curious...(I've only got SuSv3 and some crusty old POSIX rt docs).

    > This patch makes it allocate the siginfo_t, even when that exceeds
    > {RLIMIT_SIGPENDING}, for any non-RT signal (< SIGRTMIN) not sent by
    > sigqueue (actually, any signal that couldn't have been faked by a sigqueue
    > call). Of course, in an extreme memory shortage situation, you are SOL and
    > violate POSIX a little before you die horribly from being out of memory anyway.

    > The LEGACY_QUEUE logic already ensures that, for non-RT signals, at most
    > one is ever on the queue. So there really is no risk at all of unbounded
    > resource consumption; the usage can reach {RLIMIT_SIGPENDING} + 31, is all.

    Good point. Although it's RLIMIT_SIGPENDING + (31 * user_nprocs). So
    that could be 31 * 8k, for example.

    thanks,
    -chris
    --
    Linux Security Modules http://lsm.immunix.org http://lsm.bkbits.net
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