Hi Enrico, firstofall: Thanks for your reply!
Am Donnerstag, den 04.05.2017, 12:29 +0200 schrieb Enrico Joerns: > Hi Leif, > > On 04/26/2017 06:03 PM, Middelschulte, Leif wrote: > > Hi, > > > > I want to flash a µCtrl, as part of a "Install group" using RAUC and (if > > necessary) a custom Handler (?). > > > > Looking at > > https://github.com/rauc/rauc/blob/master/test/install-content/custom_handler.sh > > I was wondering about the progress indication. > > What's the supposed way to extend RAUC to handle some kind of binary > > bundled within the raucb and communicate the update progress back to the > > (already implemented) Update Controller? > > the `custom handler` you took a look at is something different than what > you require. It is a way to fully customize the entire RAUC installation > process using a script or a binary. > > I guess this is not what you intend to do. > > If I got it right, you only want to have a custom handling for a single > slot class. > This is what RAUCs `hooks` [1] are for. Or, to be more detailed, what > the per-slot `install` hook [2] is for. > > Hooks are defined in your Bundles manifest and provided by a single > `hook` script that must be placed inside the bundle and referred to in > the bundle section `[hooks]`: > > [hooks] > filename=my-hooks.sh > > Then you have to add to your µCtrl-Slots image section the line > > [image.uctrl] > ... > hooks=install > > This will make RAUC calling the hook skript instead of performing the > default installation routine for this slot. > > In the hook script you should check for being executed with the > arguments matching your slot. An example for this is in the > documentation. Slightly adapted to your needs it will look something > like this: > > #!/bin/sh > > case "$1" in > slot-install) > # only uctrl needs to be handled > test "$RAUC_SLOT_CLASS" = "uctrl" || exit 0 > > uctrl-update-routine "$RAUC_IMAGE_NAME" > ;; > *) > exit 1 > ;; > esac > > exit 0 > > > Does that help you? Yeah, that makes sense. Now, about my second question: How does a custom hook script communicate its progress back to the install-handler (i.e. rauc service)? I'd go modify rauc's update_handler.c, set the G_SUBPROCESS_FLAGS_STDOUT_PIPE flag for the spawned slot script-process and read back the progress and propagate it to the DBus interface using r_context_send_progress. Is that the right direction here? > > > Best regards > > Enrico > > > [1] > http://rauc.readthedocs.io/en/latest/using.html#bundle-based-customization-hooks > [2] http://rauc.readthedocs.io/en/latest/using.html#install-hook > Best regards, Leif _______________________________________________ RAUC mailing list
