[Buildroot] [PATCH 2/6] Add the systemd package

Arnout Vandecappelle arnout at mind.be
Tue Mar 20 18:19:39 UTC 2012


On Tuesday 20 March 2012 09:35:55 Maxime Ripard wrote:
[snip]
> >> diff --git a/package/systemd/getty at .service b/package/systemd/getty at .service
> > [snip]
> >> diff --git a/package/systemd/serial-getty at .service b/package/systemd/serial-getty at .service
> > 
> >  AFAICS the only difference between these two files and the upstream 
> > version is that it's getty instead of agetty.  Wouldn't it be simpler
> > and more future-safe to patch the upstream files?
> 
> Probably. I'll send a patch and see how it turns out.
> In the meantime, maybe I can just put a patch here instead of the whole
> file.

 That's what I meant.  I doubt that upstream would accept a patch that
removes agetty.  Maybe a patch that makes it configurable in the m4
file, but that's a lot more work to cook.

 BTW, I just noticed now that the 'normal' service definition files
are installed in /lib/systemd/system rather than /etc/systemd/system.

[snip]
> >> +define SYSTEMD_INSTALL_TTY_HOOK
> >> +	rm -f $(TARGET_DIR)/etc/systemd/system/getty.target.wants/getty at tty1.service
> >> +	[ -f $(TARGET_DIR)/etc/systemd/system/getty at .service ] || \
> >> +		$(INSTALL) -D package/systemd/getty at .service \
> >> +			$(TARGET_DIR)/etc/systemd/system/
> >> +	[ -f $(TARGET_DIR)/etc/systemd/system/serial-getty at .service ] || \
> >> +		$(INSTALL) -D package/systemd/serial-getty at .service \
> >> +			$(TARGET_DIR)/etc/systemd/system/
> >> +	ln -fs ../serial-getty at .service $(TARGET_DIR)/etc/systemd/system/getty.target.wants/serial-getty@$(BR2_TARGET_GENERIC_GETTY_PORT).service
> > 
> >  This looks strange to me.  Admittedly, I've never used systemd and
> > don't really know how it works.  But to me, this looks like the
> > getty at .service is actually not used.
> 
> Well, actually, this symlink with weird names is used as the way to pass
> units some arguments.

 That much I know :-)

 My point is: the getty at tty1.service file is removed.  Therefore, there
is nobody using the getty at .service generic definition.  At least that's
my understanding of how systemd works.  So why install the 
getty at .service file?

 Regards,
 Arnout


-- 
Arnout Vandecappelle                               arnout at mind be
Senior Embedded Software Architect                 +32-16-286540
Essensium/Mind                                     http://www.mind.be
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