[Toybox] watchdog: Can't call daemon() on nommu

[Patrick Oppenlander]

On Fri, Oct 23, 2020 at 11:59 AM Rob Landley <rob at landley.net> wrote:
>
>
>
> On 10/22/20 5:49 PM, Rob Landley wrote:
> > On 10/21/20 4:24 AM, Patrick Oppenlander wrote:
> >> Sure, but..
> >>
> >> $ watchdog -F &
> >>
> >> works on nommu
> >
> > So I'm poking at a vfork() based xvdaemon() with nommu support, and the ONLY
> > caller of daemon() without 0,0 arguments is watchdog.
> >
> > I think not closing stdin/stdout/stderr is irrelevant here (it doesn't use them
> > afterwards? Do you WANT it to stay attached to the tty in -F mode?), but the no
> > chroot("/") is my question:
> >
> > Do you want to support relative DEV arguments in the watchdog command?
>
> On the assumption we _don't_, I've checked in the new xvdaemon() function and
> moved watchdog and sntp over to it.
>
> It doesn't work with qemu application emulation:
>
>   $ qemu-sh4eb ./skeleton
>   before 21444 3
>   qemu: no user program specified
>
> Apparently exec /proc/self/exe confuses qemu. :P
>
> But other than that, it SEEMS to work? (Yes, I keep delaying the release for
> tweaks...)

Works for me too!

Thanks!

Patrick