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// -*- Mode: Go; indent-tabs-mode: t -*-
/*
* Copyright (C) 2017 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
const hardwareRandomControlSummary = `allows control over the hardware random number generator`
const hardwareRandomControlBaseDeclarationSlots = `
hardware-random-control:
allow-installation:
slot-snap-type:
- core
deny-auto-connection: true
`
const hardwareRandomControlConnectedPlugAppArmor = `
# Description: allow direct access to the hardware random number generator
# device. Usually, the default access to /dev/random is sufficient, but this
# allows applications such as rng-tools to use /dev/hwrng directly or change
# the hwrng via sysfs. For details, see
# https://www.kernel.org/doc/Documentation/hw_random.txt
/dev/hwrng rw,
/run/udev/data/c10:183 r,
/sys/devices/virtual/misc/ r,
/sys/devices/virtual/misc/hw_random/rng_{available,current} r,
# Allow changing the hwrng
/sys/devices/virtual/misc/hw_random/rng_current w,
`
var hardwareRandomControlConnectedPlugUDev = []string{`KERNEL=="hw_random"`}
func init() {
registerIface(&commonInterface{
name: "hardware-random-control",
summary: hardwareRandomControlSummary,
implicitOnCore: true,
implicitOnClassic: true,
baseDeclarationSlots: hardwareRandomControlBaseDeclarationSlots,
connectedPlugAppArmor: hardwareRandomControlConnectedPlugAppArmor,
connectedPlugUDev: hardwareRandomControlConnectedPlugUDev,
})
}
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