Re: init's MAKEDEV vs. postinstall fix (old tty nodes)

[Robert Swindells <rjs%fdy2.co.uk@localhost>]

On 2020-03-27 07:36, Thomas Klausner wrote:
> With a tmpfs /dev init calls:
>
>      "MAKEDEV -MM init"
>
> (see sbin/init/init.c starting from line 1704)
>
> which calls
>         makedev all opty
>
> of which opty does
>
> opty)
>         # Create 16 device nodes, [pt]typ0 to [pt]typf
> ...
>                 mkdev ttyp$j c 5 $jn 666
>                 mkdev ptyp$j c 6 $jn 666
>
>
> On the other hand, "postinstall fix" does:
>
> ptyfsoldnodes fix:
>         Removed legacy device node /dev/ptyp0
>         ...
>         Removed legacy device node /dev/ttypf
>
>
> So my question is: if "postinstall fix" removes these devices on an
> upgrade, why does init still create them?
>
> This looks inconsistent. Which of the two should be changed?

Maybe not change either.

Running 'postinstall check' on a system that isn't using ptyfs doesn't 
flag the legacy
nodes as needing deleting. I don't use ptyfs, and haven't tried telling 
postinstall to
fix things other than those that 'postinstall check' recommends.

Does the tmpfs /dev have a ptyfs mounted below it at the time MAKEDEV is 
run ?