From: "H. Peter Anvin" <hpa@zytor.com>
To: Dave Hansen <dave@linux.vnet.ibm.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>,
Greg KH <greg@kroah.com>,
linux-kernel@vger.kernel.org,
Containers <containers@lists.osdl.org>,
Alan Cox <alan@lxorguk.ukuu.org.uk>,
Pavel Emelyanov <xemul@openvz.org>
Subject: Re: Per-instance devpts
Date: Fri, 01 Aug 2008 12:37:57 -0700 [thread overview]
Message-ID: <48936615.4040900@zytor.com> (raw)
In-Reply-To: <1217618624.20260.50.camel@nimitz>
Dave Hansen wrote:
> On Fri, 2008-08-01 at 11:12 -0700, H. Peter Anvin wrote:
>> 1. /dev/ptmx would have to change to a symlink, ptmx -> pts/ptmx.
> ...
>> I worry #1 would have substantial user-space impact, but I don't see a
>> way around it, since there would be no obvious way to associate
>> /dev/ptmx with a filesystem.
>
> Are your worries just about replacing what is now a normal file with a
> symlink, and the behavioral changes that come with that?
>
> I wonder if using a bind mount for the file would be more robust. We
> wouldn't, of course, be able to do it persistently, but I bet it would
> be something we could count on udev to do for us.
No, I'm concerned about the changes needed for udev and setup scripts.
-hpa
next prev parent reply other threads:[~2008-08-01 19:38 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-12 17:29 [PATCH 0/4] Helper patches for PTY namespaces sukadev
2008-04-12 17:32 ` [PATCH 1/4]: Propagate error code from devpts_pty_new sukadev
2008-04-12 17:32 ` [PATCH 2/4]: Factor out PTY index allocation sukadev
2008-04-12 17:33 ` [PATCH 3/4]: Move devpts globals into init_pts_ns sukadev
2008-04-12 17:34 ` [PATCH 4/4]: Enable multiple mounts of /dev/pts sukadev
2008-04-12 18:09 ` [PATCH 0/4] Helper patches for PTY namespaces H. Peter Anvin
2008-04-12 18:35 ` Al Viro
2008-04-12 18:54 ` Multiple instances of devpts H. Peter Anvin
2008-04-12 19:15 ` Eric W. Biederman
2008-04-12 19:24 ` H. Peter Anvin
2008-04-12 19:30 ` H. Peter Anvin
2008-04-12 19:06 ` [PATCH 0/4] Helper patches for PTY namespaces Eric W. Biederman
2008-04-13 0:59 ` Serge E. Hallyn
2008-08-01 18:12 ` Per-instance devpts H. Peter Anvin
2008-08-01 19:23 ` Dave Hansen
2008-08-01 19:35 ` Al Viro
2008-08-01 19:37 ` H. Peter Anvin [this message]
[not found] ` <f73f7ab80808020004j15b0d0e5x5fa911242641b34d@mail.gmail.com>
2008-08-02 7:06 ` Kyle Moffett
2008-08-02 15:33 ` H. Peter Anvin
2008-08-02 8:54 ` Bastian Blank
2008-08-03 5:08 ` sukadev
2008-08-03 11:31 ` H. Peter Anvin
2008-08-03 12:04 ` Alan Cox
2008-08-03 17:46 ` sukadev
2008-08-03 17:54 ` Alan Cox
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