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    SubjectRe: [RFC PATCH 0/3] move the secure_computing call
    On 05/24/2012 04:43 PM, Andrew Lutomirski wrote:
    >
    > IMO the behavior should change. Alternatively, a post-ptrace syscall
    > should have to pass the *tracer's* seccomp filter, but that seems
    > overcomplicated and confusing.
    >
    > OTOH, allowing ptrace in a seccomp filter is asking for trouble anyway
    > -- if you can ptrace something outside the sandbox, you've escaped.
    >

    This is my suggestion: if there is demand, make it possible to install a
    *second* seccomp filter program which is run on the result of the
    ptrace. I.e.:

    Untraced: process -> seccomp1 -> kernel

    Traced: process -> seccomp1 -> ptrace -> seccomp2 -> kernel

    This is something we could add later if there is demand.

    -hpa




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