Re: About compat_linux

[Riza Dindir <riza.dindir%gmail.com@localhost>]

Hello Michael,

On Sat, Sep 25, 2021 at 7:26 AM Michael van Elst <mlelstv%serpens.de@localhost> wrote:
>
> riza.dindir%gmail.com@localhost (Riza Dindir) writes:
>
> >already an entry for the procfs as such
> >procfs    /proc   procfs   rw
> >But in the manual page for compat_linux it says that I need to do this
> >procfs   /emul/linux/procfs   procfs   ro,linux
> >It does make it readonly I believe and also changes the path to the
> >/proc directory. Would that be a problem?
>
> You would need to mount it twice. Then emulated programs will use
> /emul/linux/procfs and non-emulated programs will use /procfs.
>
> However, since some time the 'linux' mount option is the default,
> so on newer NetBSD this isn't necessary at all.
>
>
> >Another question would be this. When I get information on the
> >suse_base package (pkg_info suse_base) It says that I should change
> >the tmpfs entry in the /etc/fstab from
> >tmpfs   /var/sh   tmpfs   rw,-m1777,-sram%25
> >to this
> >tmpfs   /emul/linux//var/sh   tmpfs   rw,-m1777
> >Would I need to change this, and would it cause any problems?
>
> That's /var/shm, not /var/sh. Previously NetBSD wouldn't use /var/shm
> for itself, so you needed to create something for emulated programs.
> But with recent NetBSD it should just work with /var/shm for emulated
> programs too and you don't need the /emul/linux/var/shm mount.
>
>
> >Would it be better to leave the fstab intact, not changing it and
> >running linux applications?
>
> In any case, it is necessary to not replace the native entries.
> You may add the /emul/linux entries, but it is not necessary
> nowadays.
>
> procfs went linux-compatible with netbsd-6.
> /var/shm is used since netbsd-7.

Since I am using NetBSD9.2, this is not necessary I think.

>

Thanks,
Riza