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From: ebiederm@xmission.com (Eric W. Biederman)
To: Serge Hallyn <serge.hallyn@canonical.com>
Cc: Kay Sievers <kay.sievers@vrfy.org>, "Serge E. Hallyn" <serge@hallyn.com>,
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        Linus Torvalds <torvalds@linux-foundation.org>,
        Al Viro <viro@zeniv.linux.org.uk>
Subject: Re: [RFC] fix devpts mount behavior
References: <20120124000517.GA28878@sergelap>
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Date: Sat, 28 Jan 2012 12:52:00 -0800
In-Reply-To: <20120128195103.GA11299@sergelap> (Serge Hallyn's message of
	"Sat, 28 Jan 2012 13:51:03 -0600")
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Serge Hallyn <serge.hallyn@canonical.com> writes:

> Quoting Kay Sievers (kay.sievers@vrfy.org):
>> We might also thing about changing /sys/class/tty/ptmx/, and have the
>> kernel create the symlink? The loops through userspace to setup
>> default kernel stuff are kind of crazy ...
>> 
>> Kay
>
> Hi Kay,
>
> sorry, there is something I'm missing here.  Without a target kobj
> to link to, how would we go about telling the kernel that /dev/ptmx
> should be a symlink to /dev/pts/ptmx?  Is there a way to do that?

There is precedent in the /dev/fd symlinks, so I expect you want
to look and see where the configuration for that comes from.

Eric