Linux ABI and permissions to /dev

[Alexander at Leidinger.net]

Zitat von "Ralf S. Engelschall" <rse at engelschall.com>:

> > > Has anybody an idea where to search? There were no changes to devfs
> > > recently and the recent changes to the Linuxulator seemed harmless to me
> > > at the first glance...
> >
> > is there a /usr/compat/linux/dev directory? If there is try to remove
> > it, so that it does not shadow the /dev/ direcotry
>
> Yes, I have a /compat/linux/dev directory:
>
> | # ls -l /compat/linux/dev/
> | total 0
> | brw-r--r--  1 root  wheel    0, 0x00010002 Sep 17 22:05 had
> | brw-r--r--  1 root  wheel    0, 0x0001000a Sep 17 22:05 hdb
> | lrwxr-xr-x  1 root  wheel        22 Sep 17 22:05 tty0 ->
> /compat/linux/dev/tty1
> | lrwxr-xr-x  1 root  wheel        10 Sep 17 22:05 tty1 -> /dev/ttyv0
> | lrwxr-xr-x  1 root  wheel        10 Sep 17 22:05 tty10 -> /dev/ttyv9
> | lrwxr-xr-x  1 root  wheel        10 Sep 17 22:05 tty11 -> /dev/ttyva
> | lrwxr-xr-x  1 root  wheel        10 Sep 17 22:05 tty12 -> /dev/ttyvb
> | lrwxr-xr-x  1 root  wheel        10 Sep 17 22:05 tty2 -> /dev/ttyv1
> | lrwxr-xr-x  1 root  wheel        10 Sep 17 22:05 tty3 -> /dev/ttyv2
> | lrwxr-xr-x  1 root  wheel        10 Sep 17 22:05 tty4 -> /dev/ttyv3
> | lrwxr-xr-x  1 root  wheel        10 Sep 17 22:05 tty5 -> /dev/ttyv4
> | lrwxr-xr-x  1 root  wheel        10 Sep 17 22:05 tty6 -> /dev/ttyv5
> | lrwxr-xr-x  1 root  wheel        10 Sep 17 22:05 tty7 -> /dev/ttyv6
> | lrwxr-xr-x  1 root  wheel        10 Sep 17 22:05 tty8 -> /dev/ttyv7
> | lrwxr-xr-x  1 root  wheel        10 Sep 17 22:05 tty9 -> /dev/ttyv8
>
> And yes, your guess is right: once I remove it, the problem with
> my "echo foo >/dev/null" or running "acroread" wents away. But the
> /compat/linux/dev stuff is created by the "vmware3" port with its...
>
> | @exec mkdir -p %%LINUXBASE%%/dev;for n in 0 1 2 3 4 5 6 7 8 9; do ln -s
> /dev/ttyv$n %%LINUXBASE%%/dev/tty$n;done
> | @exec ln -s /dev/ttyva %%LINUXBASE%%/dev/tty10
> | @exec ln -s /dev/ttyvb %%LINUXBASE%%/dev/tty11
> | @exec mknod %%LINUXBASE%%/dev/had b 0 0x00010002
> | @exec mknod %%LINUXBASE%%/dev/hdb b 0 0x0001000a
>
> ...and unfortunately without at least the /compat/linux/dev/ttyv0 VMWare
> ultimately fails on startup. So, for running VMWare one really needs
> this directory.
>
> Additionally, the overlaying of /dev with /compat/linux/dev as the
> "vmware3" port does, definetely _worked_ until about 2 weeks ago. So,
> the question is what broke it?

PHK (CCed) did some device nodes related commits to the filesystems. This
could be related.

Bye,
Alexander.