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sd_control.go
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sd_control.go
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// -*- Mode: Go; indent-tabs-mode: t -*-
/*
* Copyright (C) 2021 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
import (
"github.com/snapcore/snapd/interfaces"
"github.com/snapcore/snapd/interfaces/apparmor"
"github.com/snapcore/snapd/interfaces/udev"
)
const sdControlSummary = `allows controlling SD cards on certain boards`
const sdControlBaseDeclarationSlots = `
sd-control:
allow-installation:
slot-snap-type:
- core
deny-auto-connection: true
`
const sdControlBaseDeclarationPlugs = `
sd-control:
allow-installation: false
deny-auto-connection: true
`
const dualSDSDControlConnectedPlugApparmor = `
# Description: can manage and control the SD cards using the DualSD driver.
# The main DualSD device node is used to control certain aspects of SD cards on
# the system.
/dev/DualSD rw,
`
var dualSDSDControlConnectedPlugUDev = []string{
`KERNEL=="DualSD"`,
}
type sdControlInterface struct {
commonInterface
}
func (iface *sdControlInterface) AppArmorConnectedPlug(spec *apparmor.Specification, plug *interfaces.ConnectedPlug, slot *interfaces.ConnectedSlot) error {
// check the flavor of the plug
var flavor string
_ = plug.Attr("flavor", &flavor)
switch flavor {
// only supported flavor for now
case "dual-sd":
spec.AddSnippet(dualSDSDControlConnectedPlugApparmor)
}
return nil
}
func (iface *sdControlInterface) UDevConnectedPlug(spec *udev.Specification, plug *interfaces.ConnectedPlug, slot *interfaces.ConnectedSlot) error {
// check the flavor of the plug
var flavor string
_ = plug.Attr("flavor", &flavor)
switch flavor {
// only supported flavor for now
case "dual-sd":
for _, rule := range dualSDSDControlConnectedPlugUDev {
spec.TagDevice(rule)
}
}
return nil
}
func init() {
registerIface(&sdControlInterface{commonInterface{
name: "sd-control",
summary: sdControlSummary,
baseDeclarationSlots: sdControlBaseDeclarationSlots,
baseDeclarationPlugs: sdControlBaseDeclarationPlugs,
implicitOnCore: true,
implicitOnClassic: true,
}})
}