is assigned for this device. $ sudo snappy hw-assign hello-world.canonical /dev/kmsg 'hello-world.canonical' is now allowed to access '/dev/kmsg' $ hello-world.usehw ... Now try to read a line from /dev/kmsg: 6,0,0,-;Booting Linux on physical CPU 0xf00 デフォルトではアプリからデバイスへアクセスできない