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    SubjectRe: [PATCH v2] Make PTRACE_SEIZE set ptrace options specified in 'data' parameter
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    On Wednesday 07 September 2011 22:40:31, Denys Vlasenko wrote:
    > Make PTRACE_SEIZE set ptrace options specified in 'data' parameter

    (I wonder if it'd be a good idea to be more future proof and pass in
    a pointer to a `struct { int my_size; int options; }', so we can
    add more things in the future other than option bits, if we need to.)

    > This can be used to close a few corner cases in strace where we get
    > unwanted racy behavior after attach, but before we have a chance
    > to set options (the notorious post-execve SIGTRAP comes to mind),

    (irrespective of the patch being a good idea or not)

    From previous discussions, I understood that PTRACE_SEIZE _always_ disables
    the post-execve SIGTRAP, so I don't believe that race actually exists.
    Or is that not the case?

    --
    Pedro Alves


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