From mboxrd@z Thu Jan  1 00:00:00 1970
Return-path: <ptxdist-bounces@pengutronix.de>
Received: from ptx.hi.pengutronix.de ([2001:67c:670:100:1d::c0]
	ident=Debian-exim) by metis.ext.pengutronix.de with esmtp (Exim 4.72)
	(envelope-from <mol@pengutronix.de>) id 1XZJi3-0007Be-Su
	for ptxdist@pengutronix.de; Wed, 01 Oct 2014 15:12:47 +0200
Received: from mol by ptx.hi.pengutronix.de with local (Exim 4.80)
	(envelope-from <mol@pengutronix.de>) id 1XZJi3-0003RB-RR
	for ptxdist@pengutronix.de; Wed, 01 Oct 2014 15:12:47 +0200
Date: Wed, 1 Oct 2014 15:12:47 +0200
From: Michael Olbrich <m.olbrich@pengutronix.de>
Message-ID: <20141001131247.GJ16481@pengutronix.de>
References: <1412050724-11845-1-git-send-email-jon@ringle.org>
	<20140930081226.GE24288@pengutronix.de>
	<CAMwGMjwEXidPo51ceCtHzGVOMFtCfKEooHxAgm9H4NpneiNnRw@mail.gmail.com>
MIME-Version: 1.0
Content-Disposition: inline
In-Reply-To: <CAMwGMjwEXidPo51ceCtHzGVOMFtCfKEooHxAgm9H4NpneiNnRw@mail.gmail.com>
Subject: Re: [ptxdist] [PATCH 1/2] systemd: install_alternative_tree
 /lib/systemd/system/
Reply-To: ptxdist@pengutronix.de
List-Id: PTXdist Development Mailing List <ptxdist.pengutronix.de>
List-Unsubscribe: <http://metis.pengutronix.de/cgi-bin/mailman/options/ptxdist>, 
	<mailto:ptxdist-request@pengutronix.de?subject=unsubscribe>
List-Archive: <http://metis.pengutronix.de/pipermail/ptxdist>
List-Post: <mailto:ptxdist@pengutronix.de>
List-Help: <mailto:ptxdist-request@pengutronix.de?subject=help>
List-Subscribe: <http://metis.pengutronix.de/cgi-bin/mailman/listinfo/ptxdist>, 
	<mailto:ptxdist-request@pengutronix.de?subject=subscribe>
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Sender: ptxdist-bounces@pengutronix.de
Errors-To: ptxdist-bounces@pengutronix.de
To: ptxdist@pengutronix.de

On Wed, Oct 01, 2014 at 08:06:42AM -0400, Jon Ringle wrote:
> On Tue, Sep 30, 2014 at 4:12 AM, Michael Olbrich <m.olbrich@pengutronix.de>
> wrote:
> 
> > On Tue, Sep 30, 2014 at 12:18:43AM -0400, jon@ringle.org wrote:
> > > From: Jon Ringle <jringle@gridpoint.com>
> > >
> > > This allows platform specific customizations to /lib/systemd/system/ to
> > > be installed on the target
> > >
> > > Signed-off-by: Jon Ringle <jringle@gridpoint.com>
> > > ---
> > >  rules/systemd.make | 2 +-
> > >  1 file changed, 1 insertion(+), 1 deletion(-)
> > >
> > > diff --git a/rules/systemd.make b/rules/systemd.make
> > > index ff3d606..51ffcac 100644
> > > --- a/rules/systemd.make
> > > +++ b/rules/systemd.make
> > > @@ -303,7 +303,7 @@ ifdef PTXCONF_SYSTEMD_NETWORK
> > >  endif
> > >
> > >  #    # units
> > > -     @$(call install_tree, systemd, 0, 0, -, /lib/systemd/system/)
> > > +     @$(call install_alternative_tree, systemd, 0, 0,
> > /lib/systemd/system/)
> >
> > Are you sure, this is what you want? install_alternative_tree replaces the
> > entire tree, not individual files. You can overwrite individual files by
> > placing your copy in /etc/systemd/system/.
> >
> >
> Normally, systemd enable/disable will create/remove a symlink from
> /etc/systemd/system/ to the corresponding file in /lib/systemd/system/. If
> I put a real file in /etc/systemd/system/, how will systemd handle
> enable/disable of a service?

enable/disable creates links in /etc/systemd/system/*.wants/, so that will
not clash. Only mask/unmask creates symlinks (to /dev/null) in
/etc/systemd/system/. But in my experience masking core systemd units
is rarely needed.

Michael

-- 
Pengutronix e.K.                           |                             |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |

-- 
ptxdist mailing list
ptxdist@pengutronix.de