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gpio_control.go
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gpio_control.go
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// -*- Mode: Go; indent-tabs-mode: t -*-
/*
* Copyright (C) 2019 Canonical Ltd
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
package builtin
// https://www.kernel.org/doc/Documentation/gpio/
const gpioControlSummary = `allows control of all aspects of GPIO pins`
// Controlling all aspects of GPIO pins can potentially impact other snaps and
// grant wide access to specific hardware and the system, so treat as
// super-privileged
const gpioControlBaseDeclarationPlugs = `
gpio-control:
allow-installation: false
deny-auto-connection: true
`
const gpioControlBaseDeclarationSlots = `
gpio-control:
allow-installation:
slot-snap-type:
- core
deny-auto-connection: true
`
const gpioControlConnectedPlugAppArmor = `
# Description: Allow controlling all aspects of GPIO pins. This can potentially
# impact the system and other snaps, and allows privileged access to hardware.
/sys/class/gpio/{,un}export rw,
/sys/class/gpio/gpio[0-9]*/{active_low,direction,value,edge} rw,
`
func init() {
registerIface(&commonInterface{
name: "gpio-control",
summary: gpioControlSummary,
implicitOnCore: true,
implicitOnClassic: true,
baseDeclarationPlugs: gpioControlBaseDeclarationPlugs,
baseDeclarationSlots: gpioControlBaseDeclarationSlots,
connectedPlugAppArmor: gpioControlConnectedPlugAppArmor,
})
}