From: Al Viro <viro@ZenIV.linux.org.uk>
To: Dave Hansen <dave@linux.vnet.ibm.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>,
"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, 1 Aug 2008 20:35:05 +0100 [thread overview]
Message-ID: <20080801193505.GS28946@ZenIV.linux.org.uk> (raw)
In-Reply-To: <1217618624.20260.50.camel@nimitz>
On Fri, Aug 01, 2008 at 12:23:44PM -0700, 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.
Not on my boxen. However, devpts tends to be mounted by initscripts,
which is where one would naturally do that.
next prev parent reply other threads:[~2008-08-01 19:35 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 [this message]
2008-08-01 19:37 ` H. Peter Anvin
[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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20080801193505.GS28946@ZenIV.linux.org.uk \
--to=viro@zeniv.linux.org.uk \
--cc=alan@lxorguk.ukuu.org.uk \
--cc=containers@lists.osdl.org \
--cc=dave@linux.vnet.ibm.com \
--cc=ebiederm@xmission.com \
--cc=greg@kroah.com \
--cc=hpa@zytor.com \
--cc=linux-kernel@vger.kernel.org \
--cc=xemul@openvz.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox