linux-kernel - Re: [Linux] Linux PID algorithm is BRAINDEAD!

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Message-ID: <20151012181244.GA22589@thunk.org>
Date:	Mon, 12 Oct 2015 14:12:44 -0400
From:	Theodore Ts'o <tytso@....edu>
To:	Dave Goel <deego3@...il.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [Linux] Linux PID algorithm is BRAINDEAD!

On Mon, Oct 12, 2015 at 01:49:59PM -0400, Dave Goel wrote:
> 
> OTOH, I guess if one has to write cleaner/other meta scripts without
> proper traps, the cleaner can simply check if linux's PID counter
> is too close to the current PID, and if so, refrain from drastic
> actions. For the latter, I wonder if there's a way to
> get "current PID counter."

How about:

	current_pid = fork();
	if (current_pid == 0)
		exit(0);
	(void) waitpid(current_pid);

Translating this to perl or python shouldn't be that difficult.

						- Ted
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