Re: CVS commit: src/etc

[Izumi Tsutsui <tsutsui%ceres.dti.ne.jp@localhost>]

martin@ wrote:

> On Sat, Sep 08, 2012 at 01:34:37AM +0900, Izumi Tsutsui wrote:
> > Probably we should also remove ipty from MAKEDEV "init" target
> > and also add the above "mount -t ptyfs ..." line into
> > src/distrib/{amd64,i386}/cdroms/etc.rc and
> > src/distrib/sparc64/cdroms/installcd/etc.rc
> > because third party live CDs would use tmpfs based /dev
> > created by init(8) as installcd.
> 
> I am not sure. Since the init created /dev tmpfs is an emergency
> measure, it can't realy rely on the presence of ptyfs.

I guess only /dev/console (and some "std" devices) are required
and nothing relys on ptyfs to get single user prompt, so
administrators can invoke MAKEDEV(8) or mount_ptyfs(8) by hand
on the prompt for emergency ops if necessary.
(actually previous sparc64.iso failed in sysinst, not bootstrap)

tmpfs /dev created by init(8) is also useful on systems
using "read only root" environment, and such systems already
have customized fstab(5) (or rc script like installcd) so
it's quite easy to add ptyfs into such files.

> We can, however, use a modified MAKEDEV script for install cdroms (and then
> use ptyfs).

MAKEDEV is a generated file so I'm afraid it is a bit annoying
to sync modified version with standard one.

---
Izumi Tsutsui