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kwindrem / SetupHelper

Helper functions to simplify writing setup scripts that modify VenusOs functionality. The package includes automatic reinstallation of the package after a VenusOs update.
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Venus OS blind install mechanism #47

Closed mr-manuel closed 1 year ago

mr-manuel commented 1 year ago

Hello Kevin,

I'm searching how the automated install mechanism of Venus OS drivers works. Like you put the venus-data.tgz on a USB drive, insert the drive and Venus OS will install it.

Maybe you have a link to a documentation or something?

If not, maybe you could help me with a few questions?

  1. Where is the script in Venus OS located, that is called if you insert a USB drive with a venus-data.tgz?
  2. Is there a specific folder structure that has to be preserved in the tar?
  3. Which script is called from Venus OS for install after the extraction of the venus-data.tgz? I have the sensation that it searches only for some file with local in the name and executes it.

Thanks a lot!

mr-manuel commented 1 year ago

As it is so often the case, you have to ask someone else to find it for yourself, else you will not find it :-)

This answers all questions: https://github.com/victronenergy/meta-victronenergy/blob/master/meta-venus/recipes-core/initscripts/files/update-data.sh

kwindrem commented 1 year ago

update-data.sh unpacks the archive to /data. There are also pre and post scripts wrapped around the unpack. These must be in the rc folder inside the archive.

The restore to factory defaults has one file in the archive: rcS.local. That script is executed during boot and simply removes (almost) everything in /data.

Look at the blind install scripts in SetupHelper for more ideas.