Subject: Re: tmpfs and union mounts
To: None <firstname.lastname@example.org>
From: Steven M. Bellovin <email@example.com>
Date: 10/15/2005 15:58:00
In message <20051015195057.GA23978@panix.com>, Thor Lancelot Simon writes:
>On Sat, Oct 15, 2005 at 02:06:34PM -0400, Steven M. Bellovin wrote:
>> difficult-to-avoid consequence of other code. The other problem with a
>> non-writable /dev is that various parts of the system can't do chown()
>> calls on, say, ttys; for an appliance box, that's a lot less relevant,
>> as long as it doesn't block console and ssh login.
>That is why Christos wrote ptyfs.
I'll take your word for it, though that wasn't what he said when he
announced it (http://mail-index.netbsd.org/tech-kern/2004/11/08/0016.html)
But it doesn't help with real ttys, /dev/null, and probably others I
didn't encounter while fighting things.
--Steven M. Bellovin, http://www.cs.columbia.edu/~smb