Bug 60398

Summary:	systemd-197: udevadm hwdb --update needs additional switch for ${ROOT} support
Product:	systemd	Reporter:	Samuli Suominen <ssuominen>
Component:	general	Assignee:	systemd-bugs
Status:	RESOLVED FIXED	QA Contact:	systemd-bugs
Severity:	normal
Priority:	medium	CC:	freedesktop-bugs
Version:	unspecified
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:
Attachments:	Patch to add --root switch for offset $ROOT support

Description Samuli Suominen 2013-02-07 06:30:31 UTC

A switch like --root or --installroot is required. The thing is that we call `udevadm hwdb --update` at the end of udev installation, in the post install phase in 2 places: udev and hwids package that contains all the iab.txt, oui.txt, pci.ids, and so forth

The postinst phase must be called with ${ROOT} as the package manager is supposed to support ${ROOT}. So the files should be picked up from ${ROOT} what it uses to generate the hwdb.bin and the hwdb.bin should also end up in the actual ${ROOT}

udevadm hwdb --update --root="${ROOT}"

And if not defined, ${ROOT} is just /

Currently this is breaking the packaging of udev for Gentoo, in fact, this is the only real problem we are having.

Thanks for looking into it

Comment 1 Samuli Suominen 2013-02-07 18:39:58 UTC

Created attachment 74371 [details] [review]
Patch to add --root switch for offset $ROOT support

"udevadm: support updating hwdb from an offset root

Introduce `--root` option to make users run udevadm on rootfs not
mounted as /

Ease the life of distribution packagers."

Thanks to Luca Barbato (lu_zero) for the orig. patch. Only changed slightly to apply cleanly against current git, and 197.

Comment 2 Kay Sievers 2013-02-08 11:12:36 UTC

The patch seems to read the sources from the real root. It should read
the files from the --root= location.

--root= should work now.

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