Messages in this thread |  | | | Date | Tue, 31 Aug 2004 00:22:06 -0400 | | From | Daniel Jacobowitz <> | | Subject | Re: [PATCH] cleanup ptrace stops and remove notify_parent |
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On Mon, Aug 30, 2004 at 08:25:46PM -0700, Roland McGrath wrote: > This patch is against Linus's current tree. > > This adds a new state TASK_TRACED that is used in place of TASK_STOPPED > when a thread stops because it is ptraced. Now ptrace operations are only > permitted when the target is in TASK_TRACED state, not in TASK_STOPPED. > This means that if a process is stopped normally by a job control signal > and then you PTRACE_ATTACH to it, you will have to send it a SIGCONT before > you can do any ptrace operations on it. (The SIGCONT will be reported to > ptrace and then you can discard it instead of passing it through when you > call PTRACE_CONT et al.) > > If a traced child gets orphaned while in TASK_TRACED state, it morphs into > TASK_STOPPED state. This makes it again possible to resume or destroy the > process with SIGCONT or SIGKILL.
Nice.
Unless it's been changed since I last pulled, you should also fix up has_stopped_jobs. I think it's broken by the introduction of TASK_TRACED.
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