Re: [gentoo-dev] tmpfiles virtual

[William Hubbs]

On Thu, Nov 17, 2016 at 07:49:07PM +0100, Michał Górny wrote:
> On Thu, 17 Nov 2016 19:46:41 +0100
> Michał Górny <mgorny@g.o> wrote:
>
> > On Thu, 17 Nov 2016 10:02:25 -0500
> > Ian Stakenvicius <axs@g.o> wrote:
> >
> > > On 17/11/16 01:03 AM, Michał Górny wrote:
> > > > On Wed, 16 Nov 2016 14:21:41 -0600
> > > > William Hubbs <williamh@g.o> wrote:
> > > >
> > > >> On Wed, Nov 16, 2016 at 01:04:11PM -0500, Ian Stakenvicius wrote:
> > > >>> On 16/11/16 12:03 PM, William Hubbs wrote:
> > > >>>> On Wed, Nov 16, 2016 at 10:14:02AM -0500, Ian Stakenvicius wrote:
> > > >>>>> On 16/11/16 10:08 AM, William Hubbs wrote:
> > > >>>>>> opentmpfiles will be updated to install the service scripts which
> > > >>>>>> will be run when OpenRC boots a system. There is nothing for
> > > >>>>>> it to do if systemd is used to boot the system.
> > > >>>>>>
> > > >>>>>> William
> > > >>>>>>
> > > >>>>>
> > > >>>>> But there is something to do if openrc is used to boot the system and
> > > >>>>> systemd is the package providing tmpfiles.d processing via the virtual.
> > > >>>>
> > > >>>> The providers (opentmpfiles and systemd) will not block each other, so
> > > >>>> the only way this will happen is if you have openrc and systemd
> > > >>>> installed then forcefully remove opentmpfiles. I think you would not
> > > >>>> want to do that until you are ready to migrate to booting with systemd.
> > > >>>>
> > > >>>> William
> > > >>>>
> > > >>>
> > > >>> I think I'm having a hard time getting across the issue here...:
> > > >>>
> > > >>> 1 - we will have a virtual/tmpfiles that will bring in EITHER systemd,
> > > >>> or opentmpfiles.
> > > >>>
> > > >>> 2 - openrc will NOT depend on opentmpfiles (nor virtual/tmpfiles)
> > > >>>
> > > >>> 3 - Applications that install stuff into /usr/lib/tmpfiles.d/ will
> > > >>> need to depend on virtual/tmpfiles in order to make sure that the
> > > >>> system has something installed that will process them at boot-time.
> > > >>
> > > >>  Yes, this will be handled by an RDEPEND in the eclass.
> > > >
> > > > This is a wrong presumption. The eclass needs the virtual only for
> > > > pkg_postinst(). While RDEPEND is how we solve this now, it will no
> > > > longer be necessary in a future EAPI.
> > > >
> > >
> > > This makes sense to me as well -- which means every package that
> > > installs tmpfiles.d/ files should properly RDEPEND on the virtual on
> > > its own when the functionality arisen from those tmpfiles.d files is
> > > non-optional.
> >
> > No, that's now what I meant.
> >
> > The eclass needs the virtual to create temporary directories once,
> > in pkg_postinst(). Period. That's how far it is concerned.
> >
> > If user wants to use a volatile filesystem or any other more complete
> > tmpfiles.d processing, he needs to use a init that supports that. Which
> > means either OpenRC with tmpfiles or systemd. Ebuild has nothing to do
> > with this.
>
> One more thing. I still believe openrc should RDEP on tmpfiles by
> default since openrc is mounting a few standard locations
> (like /var/run) as tmpfs by default.
 
 I disagree. We mount a couple of things, /proc, /sys and /run off the
 top of my head, but that doesn't justify adding tmpfiles as an rdepend
 of OpenRC.

 William