[Buildroot] [PATCH] package/skeleton-init-systemd: create a symlink /var/run to ../run

[Trent Piepho <tpiepho@impinj.com>]

On Sun, 2018-02-25 at 20:16 +0100, Romain Naour wrote:
> The file /usr/lib/tmpfiles.d/var.con will create automatically that
> > > symlink at bootup /var/run doesn't exist yet. But dbus creates, at
> > > install time, the directory /var/run/dbus without taking care of
> > > /var/run. So we end up with two different directories /run and
> > > /var/run. This bug affects more or less all systemd-provided
> > > utilities, including logind and systemd itself.
> > > 
> > > This patch create the correct symlink run -> ../run when systemd
> > > is used as init system.
> > 
> > This doesn't work in the RO root case.
> 
> Indeed, but I'm testing/fixing the RW case with this patch
> (BR2_TARGET_GENERIC_REMOUNT_ROOTFS_RW).

I should have said that differently.  RO root has the same problem, but
this link will not solve it.

I believe the link:
ln -sf ../../../../run $(TARGET_DIR)/usr/share/factory/var/run

will fix the RO case.  But of course does not work in the RW case.

I can send a follow on patch to add this link for RO.

But I wish there was some other method that could solve the problem for
both RW and RO, without needing to add special cases like this link.