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    SubjectRe: The purpose of PT_TRACESYSGOOD

    >> What's the effect of PT_TRACESYSGOOD flag? I found it's used only set
    >> in ptrace_setoptions, which is called in the function
    >> ptrace_request. And the PT_TRACESYSGOOD flag will be requested in
    >> do_syscall_trace. What's the purpose of that flag?

    * A child stopped at a syscall has status as if it received SIGTRAP.
    * In order to distinguish between SIGTRAP and syscall, some kernel
    * versions have the PTRACE_O_TRACESYSGOOD option, that sets an extra
    * bit 0x80 in the syscall case.
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      Last update: 2005-03-22 14:09    [W:0.019 / U:3.208 seconds]
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