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// -*- Mode: Go; indent-tabs-mode: t -*-
/*
* Copyright (C) 2016-2020 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 sandbox offers streamlined interfaces for the sandboxing
// primitives from the system for snapd use.
package sandbox
import (
"github.com/snapcore/snapd/sandbox/apparmor"
"github.com/snapcore/snapd/sandbox/cgroup"
)
// For testing only
var mockedForceDevMode *bool
// ForceDevMode returns true if the distribution doesn't implement required
// security features for confinement and devmode is forced.
func ForceDevMode() bool {
if mockedForceDevMode != nil {
return *mockedForceDevMode
}
apparmorFull := apparmor.ProbedLevel() == apparmor.Full
// TODO: update once security backends affected by cgroupv2 are fully
// supported
cgroupv2 := cgroup.IsUnified()
return !apparmorFull || cgroupv2
}
// MockForceDevMode fake the system to believe its in a distro
// that is in forced devmode as returned by ForceDevMode.
func MockForceDevMode(forcedDevMode bool) (restore func()) {
old := mockedForceDevMode
mockedForceDevMode = &forcedDevMode
return func() {
mockedForceDevMode = old
}
}
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