linux-kernel - Re: Does inotify work with special files such as /proc/<pid>/task/<tid>/children?

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Message-ID: <20140928231240.GC7996@ZenIV.linux.org.uk>
Date:	Mon, 29 Sep 2014 00:12:40 +0100
From:	Al Viro <viro@...IV.linux.org.uk>
To:	Steven Stewart-Gallus <sstewartgallus00@...angara.bc.ca>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: Does inotify work with special files such as
 /proc/<pid>/task/<tid>/children?

On Sun, Sep 28, 2014 at 11:09:50PM +0000, Steven Stewart-Gallus wrote:
> Hello,
> 
> I can't seem to get inotify to work with special files such as
> /proc/<pid>/task/<tid>/children? I just need to get a simple yes/no
> answer on whether it works for special files or whether I have to try
> a different approach.

Simple answer: No.  Slightly more expanded one: No, and it won't.
Inotify does not work on procfs, sysfs, etc.  Doesn't work on
network filesystems either.  Don't use it.  It was a mistake in the
first place.
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