Le 06/11/2016 à 11:50, Jacques Supcik a écrit : > Dear community. > > I have a program <https://gitlab.com/telecom-tower/tower>, written in > go, and running on a raspberry Pi 2, which displays messages on a LED > panel. The panel <https://www.adafruit.com/product/2294> is made of > "neo pixels" and is connected to the GPIO of the raspberry Pi. > Internally, it uses the DMA and PWM to generate and accurate signals. > > The program currently runs well on a Raspbian system and I would like > to move to ubuntu-core. I was able to build the snap and to deploy it > on a raspberry Pi 2 running Core version 16. I installed the snap with > "--dangerous", but as soon as the system configure the DMA/PWM/GPIO, > it just freezes. > > I installed snappy-debug to check the logs and this is what I get: > > = AppArmor = > Time: Nov 6 09:28:45 > Log: apparmor="DENIED" operation="open" > profile="snap.telecom-tower.daemon" name="/dev/vcio" pid=4441 > comm="tower" requested_mask="r" denied_mask="r" fsuid=0 ouid=0 > File: /dev/vcio (read) > > = Seccomp = > Time: Nov 6 09:28:45 > Log: auid=4294967295 uid=0 gid=0 ses=4294967295 pid=4441 comm="tower" > exe="/snap/telecom-tower/x1/bin/tower" sig=31 arch=40000028 14(mknod) > compat=0 ip=0x76e3aaf6 code=0x0 > Syscall: mknod > > Note that if I scp the binary file and run on ubuntu core as root, > then the program runs fine. (I don't install the snap, I just run the > binary from the home directory.) > > Does someone have an idea about what I can do to make my snap run? > > Thank you very much in advance for your support.
Hey Jacques, I think we did discuss about GPIO support in confined mode, but there is no interface for this today AFAIK (CCing Jamie who can confirm and maybe give a path/ETA forward). Meanwhile, you can still install your snap in devmode to bypass security, and that should do it in your case, mind confirming? Cheers, Didier
-- Snapcraft mailing list Snapcraft@lists.snapcraft.io Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/snapcraft
