Re: [RFC][PATCH 04/20] pspace: Allow multiple instaces of the process id namespace

+static inline int pspace_task_visible(struct pspace *pspace, struct

task_struct *tsk)

+{
+	return (tsk->pspace == pspace) ||
+		((tsk->pspace->child_reaper.pspace == pspace) &&
+		 (tsk->pspace->child_reaper.task == tsk));

<<< the logic with child_reaper which can be somehow partly inside pspace... and
this check is not that abvious.

This is the check for what shows up in /proc.

Given that is how I have explicitly documented things to work, (the

init process straddles the boundary) I fail to see how it is not obvious.

I was confused by the fact that child_reaper.pspace is actually a parent pspace.

Kirill

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---

• References:
  • [RFC][PATCH 0/20] Multiple instances of the process id namespace
    • From: [email protected] (Eric W. Biederman)
  • [RFC][PATCH 01/20] pid: Intoduce the concept of a wid (wait id)
    • From: [email protected] (Eric W. Biederman)
  • [RFC][PATCH 02/20] pspace: The parent process id of pid 1 is always 0.
    • From: [email protected] (Eric W. Biederman)
  • [RFC][PATCH 03/20] pid: Introduce a generic helper to test for init.
    • From: [email protected] (Eric W. Biederman)
  • [RFC][PATCH 04/20] pspace: Allow multiple instaces of the process id namespace
    • From: [email protected] (Eric W. Biederman)
  • Re: [RFC][PATCH 04/20] pspace: Allow multiple instaces of the process id namespace
    • From: Kirill Korotaev <[email protected]>
  • Re: [RFC][PATCH 04/20] pspace: Allow multiple instaces of the process id namespace
    • From: [email protected] (Eric W. Biederman)

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