gitee.com/mysnapcore/mysnapd@v0.1.0/interfaces/builtin/alsa.go (about)

     1  // -*- Mode: Go; indent-tabs-mode: t -*-
     2  
     3  /*
     4   * Copyright (C) 2016-2017 Canonical Ltd
     5   *
     6   * This program is free software: you can redistribute it and/or modify
     7   * it under the terms of the GNU General Public License version 3 as
     8   * published by the Free Software Foundation.
     9   *
    10   * This program is distributed in the hope that it will be useful,
    11   * but WITHOUT ANY WARRANTY; without even the implied warranty of
    12   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    13   * GNU General Public License for more details.
    14   *
    15   * You should have received a copy of the GNU General Public License
    16   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
    17   *
    18   */
    19  
    20  package builtin
    21  
    22  const alsaSummary = `allows access to raw ALSA devices`
    23  
    24  const alsaBaseDeclarationSlots = `
    25    alsa:
    26      allow-installation:
    27        slot-snap-type:
    28          - core
    29      deny-auto-connection: true
    30  `
    31  
    32  const alsaConnectedPlugAppArmor = `
    33  # Description: Allow access to raw ALSA devices.
    34  
    35  /dev/snd/  r,
    36  /dev/snd/* rw,
    37  
    38  /run/udev/data/c116:[0-9]* r, # alsa
    39  /run/udev/data/+sound:card[0-9]* r,
    40  
    41  # Allow access to the alsa state dir
    42  /var/lib/alsa/{,*}         r,
    43  
    44  # Allow access to alsa /proc entries
    45  @{PROC}/asound/   r,
    46  @{PROC}/asound/** rw,
    47  `
    48  
    49  var alsaConnectedPlugUDev = []string{
    50  	`KERNEL=="controlC[0-9]*"`,
    51  	`KERNEL=="hwC[0-9]*D[0-9]*"`,
    52  	`KERNEL=="pcmC[0-9]*D[0-9]*[cp]"`,
    53  	`KERNEL=="midiC[0-9]*D[0-9]*"`,
    54  	`KERNEL=="timer"`,
    55  	`KERNEL=="seq"`,
    56  	`SUBSYSTEM=="sound", KERNEL=="card[0-9]*"`,
    57  }
    58  
    59  func init() {
    60  	registerIface(&commonInterface{
    61  		name:                  "alsa",
    62  		summary:               alsaSummary,
    63  		implicitOnCore:        true,
    64  		implicitOnClassic:     true,
    65  		baseDeclarationSlots:  alsaBaseDeclarationSlots,
    66  		connectedPlugAppArmor: alsaConnectedPlugAppArmor,
    67  		connectedPlugUDev:     alsaConnectedPlugUDev,
    68  	})
    69  }