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    SubjectRe: [RFC][PATCH 0/3] fork: Add the ability to create tasks with given pids

    On Tue, Nov 22, 2011 at 12:04:38PM +0000, Pedro Alves wrote:
    > This whole userspace C/R stuff and being able to set the child's pid has potential
    > of being very useful for GDB too, allowing a much better reimplementation of its
    > old checkpointing feature [*], and allowing for a faster reverse debugging
    > implementation, by being able to do faster rewinding -- restore snapshot and replay
    > instructions up to N (by single stepping or running to breakpoint), rather than
    > manually undoing the effects of each instruction, one by one.
    > IOW, root only would be a shame from GDB's perspective.

    Would CAP_CHECKPOINT be a shame too? I'm reluctant about priviledge
    through fd inheritance mostly because of its unusualness. I don't
    think priv management is a good problem space for small creative
    solutions. We're much better off with mundane mechanisms which people
    are already familiar with and is easy to account for.

    Thank you.


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