mirror of
https://github.com/home-assistant/supervisor.git
synced 2025-07-25 18:16:32 +00:00
Change handling kernel udev events (#2484)
* Change handling kernel udev events / add USB events * finish USB * map dev ro * fix bind
This commit is contained in:
Pascal Vizeli
GitHub
parent
10b14132b9
commit
b8a976b344
@ -27,8 +27,8 @@ from ..const import (
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SECURITY_PROFILE,
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)
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from ..coresys import CoreSys
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from ..exceptions import CoreDNSError, DockerError
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from ..hardware.const import PolicyGroup, UdevSubsystem
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from ..exceptions import CoreDNSError, DockerError, HardwareNotFound
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from ..hardware.const import PolicyGroup
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from ..utils import process_lock
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from .interface import DockerInterface
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@ -124,64 +124,21 @@ class DockerAddon(DockerInterface):
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ENV_TOKEN_HASSIO: self.addon.supervisor_token,
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}
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@property
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def devices(self) -> Optional[List[str]]:
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"""Return needed devices."""
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devices = set()
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def _create_dev(device_path: Path) -> str:
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"""Add device to list."""
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devices.add(f"{device_path.as_posix()}:{device_path.as_posix()}:rwm")
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# Static devices
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for device_path in self.addon.static_devices:
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if not self.sys_hardware.exists_device_node(device_path):
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_LOGGER.debug("Ignore static device path %s", device_path)
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continue
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_create_dev(device_path)
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# Dynamic devices
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for device in self.addon.devices:
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_create_dev(device.path)
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# Auto mapping UART devices / LINKS
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if self.addon.with_uart:
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for device in self.sys_hardware.filter_devices(
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subsystem=UdevSubsystem.SERIAL
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):
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_create_dev(device.path)
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# Auto mapping GPIO
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if self.addon.with_gpio:
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for subsystem in (
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UdevSubsystem.GPIO,
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UdevSubsystem.GPIOMEM,
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):
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for device in self.sys_hardware.filter_devices(subsystem=subsystem):
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_create_dev(device.path)
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# Auto mapping Video
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if self.addon.with_video:
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for subsystem in (
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UdevSubsystem.VIDEO,
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UdevSubsystem.CEC,
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UdevSubsystem.VCHIQ,
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UdevSubsystem.MEDIA,
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):
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for device in self.sys_hardware.filter_devices(subsystem=subsystem):
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_create_dev(device.path)
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# Return None if no devices is present
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if devices:
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return list(devices)
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return None
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@property
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def cgroups_rules(self) -> Optional[List[str]]:
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"""Return a list of needed cgroups permission."""
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rules = set()
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# Attach correct cgroups
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# Attach correct cgroups for static devices
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for device_path in self.addon.static_devices:
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try:
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device = self.sys_hardware.get_by_path(device_path)
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except HardwareNotFound:
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_LOGGER.debug("Ignore static device path %s", device_path)
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else:
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rules.add(self.sys_hardware.policy.get_cgroups_rule(device))
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# Attach correct cgroups for devices
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for device in self.addon.devices:
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rules.add(self.sys_hardware.policy.get_cgroups_rule(device))
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@ -197,6 +154,10 @@ class DockerAddon(DockerInterface):
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if self.addon.with_uart:
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rules.update(self.sys_hardware.policy.get_cgroups_rules(PolicyGroup.UART))
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# USB
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if self.addon.with_usb:
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rules.update(self.sys_hardware.policy.get_cgroups_rules(PolicyGroup.USB))
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# Return None if no rules is present
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if rules:
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return list(rules)
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@ -267,7 +228,10 @@ class DockerAddon(DockerInterface):
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"""Generate volumes for mappings."""
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addon_mapping = self.addon.map_volumes
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volumes = {str(self.addon.path_extern_data): {"bind": "/data", "mode": "rw"}}
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volumes = {
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"/dev": {"bind": "/dev", "mode": "ro"},
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str(self.addon.path_extern_data): {"bind": "/data", "mode": "rw"},
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}
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# setup config mappings
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if MAP_CONFIG in addon_mapping:
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@ -354,10 +318,6 @@ class DockerAddon(DockerInterface):
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if self.addon.with_udev:
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volumes.update({"/run/udev": {"bind": "/run/udev", "mode": "ro"}})
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# USB support
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if self.addon.with_usb and self.sys_hardware.helper.support_usb:
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volumes.update({"/dev/bus/usb": {"bind": "/dev/bus/usb", "mode": "rw"}})
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# Kernel Modules support
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if self.addon.with_kernel_modules:
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volumes.update({"/lib/modules": {"bind": "/lib/modules", "mode": "ro"}})
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@ -391,13 +351,6 @@ class DockerAddon(DockerInterface):
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}
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)
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# With UART
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if self.addon.with_uart:
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mount = self.sys_hardware.container.get_udev_id_mount(UdevSubsystem.SERIAL)
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volumes.update(
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{str(mount.as_posix()): {"bind": str(mount.as_posix()), "mode": "ro"}}
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)
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return volumes
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def _run(self) -> None:
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@ -430,7 +383,6 @@ class DockerAddon(DockerInterface):
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pid_mode=self.pid_mode,
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ports=self.ports,
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extra_hosts=self.network_mapping,
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devices=self.devices,
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device_cgroup_rules=self.cgroups_rules,
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cap_add=self.addon.privileged,
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security_opt=self.security_opt,
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@ -1,6 +1,5 @@
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"""Audio docker object."""
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import logging
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from pathlib import Path
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from typing import Dict
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from ..const import ENV_TIME, MACHINE_ID
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@ -30,6 +29,7 @@ class DockerAudio(DockerInterface, CoreSysAttributes):
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def volumes(self) -> Dict[str, Dict[str, str]]:
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"""Return Volumes for the mount."""
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volumes = {
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"/dev": {"bind": "/dev", "mode": "ro"},
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str(self.sys_config.path_extern_audio): {"bind": "/data", "mode": "rw"},
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"/run/dbus": {"bind": "/run/dbus", "mode": "ro"},
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"/run/udev": {"bind": "/run/udev", "mode": "ro"},
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@ -39,12 +39,6 @@ class DockerAudio(DockerInterface, CoreSysAttributes):
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if MACHINE_ID.exists():
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volumes.update({str(MACHINE_ID): {"bind": str(MACHINE_ID), "mode": "ro"}})
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# SND support
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if Path("/dev/snd").exists():
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volumes.update({"/dev/snd": {"bind": "/dev/snd", "mode": "rw"}})
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else:
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_LOGGER.warning("Kernel have no audio support")
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return volumes
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def _run(self) -> None:
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@ -8,7 +8,7 @@ import requests
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from ..const import ENV_TIME, ENV_TOKEN, ENV_TOKEN_HASSIO, LABEL_MACHINE, MACHINE_ID
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from ..exceptions import DockerError
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from ..hardware.const import PolicyGroup, UdevSubsystem
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from ..hardware.const import PolicyGroup
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from .interface import CommandReturn, DockerInterface
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_LOGGER: logging.Logger = logging.getLogger(__name__)
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@ -55,12 +55,14 @@ class DockerHomeAssistant(DockerInterface):
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self.sys_hardware.policy.get_cgroups_rules(PolicyGroup.UART)
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+ self.sys_hardware.policy.get_cgroups_rules(PolicyGroup.VIDEO)
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+ self.sys_hardware.policy.get_cgroups_rules(PolicyGroup.GPIO)
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+ self.sys_hardware.policy.get_cgroups_rules(PolicyGroup.USB)
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)
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@property
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def volumes(self) -> Dict[str, Dict[str, str]]:
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"""Return Volumes for the mount."""
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volumes = {
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"/dev": {"bind": "/dev", "mode": "ro"},
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"/run/dbus": {"bind": "/run/dbus", "mode": "ro"},
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"/run/udev": {"bind": "/run/udev", "mode": "ro"},
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}
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@ -106,16 +108,6 @@ class DockerHomeAssistant(DockerInterface):
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}
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)
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# udev helper
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for mount in (
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self.sys_hardware.container.get_udev_id_mount(UdevSubsystem.SERIAL),
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self.sys_hardware.container.get_udev_id_mount(UdevSubsystem.DISK),
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self.sys_hardware.container.get_udev_id_mount(UdevSubsystem.INPUT),
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):
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volumes.update(
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{str(mount.as_posix()): {"bind": str(mount.as_posix()), "mode": "ro"}}
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)
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return volumes
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def _run(self) -> None:
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@ -35,3 +35,10 @@ class PolicyGroup(str, Enum):
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USB = "usb"
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VIDEO = "video"
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AUDIO = "audio"
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class UdevAction(str, Enum):
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"""Udev device action."""
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ADD = "add"
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REMOVE = "remove"
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@ -1,73 +0,0 @@
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"""Handle udev for container."""
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from contextlib import suppress
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import logging
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from pathlib import Path
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from typing import Optional
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from supervisor.const import AddonState
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from ..coresys import CoreSys, CoreSysAttributes
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from ..docker.interface import DockerInterface
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from ..exceptions import DockerError, DockerNotFound, HardwareError
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from .const import UdevSubsystem
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from .data import Device
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_UDEV_BY_ID = {
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UdevSubsystem.SERIAL: Path("/dev/serial/by-id"),
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UdevSubsystem.DISK: Path("/dev/disk"),
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UdevSubsystem.INPUT: Path("/dev/input/by-id"),
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}
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_LOGGER: logging.Logger = logging.getLogger(__name__)
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class HwContainer(CoreSysAttributes):
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"""Representation of an interface to udev / container."""
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def __init__(self, coresys: CoreSys):
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"""Init hardware object."""
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self.coresys = coresys
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def get_udev_id_mount(self, subystem: UdevSubsystem) -> Optional[Path]:
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"""Return mount path for udev device by-id path."""
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return _UDEV_BY_ID.get(subystem)
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async def process_serial_device(self, device: Device) -> None:
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"""Process a new Serial device."""
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# Add to all needed add-ons
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for addon in self.sys_addons.installed:
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if addon.state != AddonState.STARTED or addon.with_uart:
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continue
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with suppress(HardwareError):
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await self._create_device(addon.instance, device)
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# Process on Home Assistant Core
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with suppress(HardwareError):
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await self._create_device(self.sys_homeassistant.core.instance, device)
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async def process_input_device(self, device: Device) -> None:
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"""Process a new Serial device."""
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# Process on Home Assistant Core
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with suppress(HardwareError):
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await self._create_device(self.sys_homeassistant.core.instance, device)
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async def _create_device(self, instance: DockerInterface, device: Device) -> None:
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"""Add device into container."""
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try:
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answer = await instance.run_inside(
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f'sh -c "mknod -m 660 {device.path.as_posix()} c {device.cgroups_major} {device.cgroups_minor}"'
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)
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except DockerNotFound:
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return
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except DockerError as err:
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_LOGGER.warning("Can't add new device %s to %s", device.path, instance.name)
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raise HardwareError() from err
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if answer.exit_code == 0:
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return
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_LOGGER.warning(
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"Container response with '%s' during process %s",
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answer.output.encode(),
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device.path,
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)
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@ -9,7 +9,6 @@ from supervisor.hardware.const import UdevSubsystem
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from ..coresys import CoreSys, CoreSysAttributes
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from ..exceptions import HardwareNotFound
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from .container import HwContainer
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from .data import Device
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from .helper import HwHelper
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from .monitor import HwMonitor
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@ -30,7 +29,6 @@ class HardwareManager(CoreSysAttributes):
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self._montior: HwMonitor = HwMonitor(coresys)
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self._helper: HwHelper = HwHelper(coresys)
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self._policy: HwPolicy = HwPolicy(coresys)
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self._container: HwContainer = HwContainer(coresys)
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@property
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def monitor(self) -> HwMonitor:
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@ -47,11 +45,6 @@ class HardwareManager(CoreSysAttributes):
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"""Return Hardware policy instance."""
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return self._policy
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@property
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def container(self) -> HwContainer:
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"""Return Hardware container instance."""
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return self._container
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@property
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def devices(self) -> List[Device]:
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"""Return List of devices."""
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@ -1,4 +1,5 @@
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"""Supervisor Hardware monitor based on udev."""
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from contextlib import suppress
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import logging
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from pathlib import Path
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from pprint import pformat
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@ -8,8 +9,9 @@ import pyudev
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from ..const import CoreState
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from ..coresys import CoreSys, CoreSysAttributes
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from ..exceptions import HardwareNotFound
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from ..resolution.const import UnhealthyReason
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from .const import UdevSubsystem
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from .const import PolicyGroup, UdevAction, UdevSubsystem
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from .data import Device
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_LOGGER: logging.Logger = logging.getLogger(__name__)
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@ -45,82 +47,107 @@ class HwMonitor(CoreSysAttributes):
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self.observer.stop()
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_LOGGER.info("Stopped Supervisor hardware monitor")
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def _udev_events(self, action: str, device: pyudev.Device):
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def _udev_events(self, action: str, kernel: pyudev.Device):
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"""Incomming events from udev.
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This is inside a observe thread and need pass into our eventloop.
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"""
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_LOGGER.debug("Hardware monitor: %s - %s", action, pformat(device))
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self.sys_loop.call_soon_threadsafe(self._async_udev_events, action, device)
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_LOGGER.debug("Hardware monitor: %s - %s", action, pformat(kernel))
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udev = None
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with suppress(pyudev.DeviceNotFoundAtPathError):
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udev = pyudev.Devices.from_sys_path(self.context, kernel.sys_path)
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def _async_udev_events(self, action: str, udev_device: pyudev.Device):
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self.sys_loop.call_soon_threadsafe(
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self._async_udev_events, action, kernel, udev
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)
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def _async_udev_events(
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self, action: str, kernel: pyudev.Device, udev: Optional[pyudev.Device]
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):
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"""Incomming events from udev into loop."""
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# Update device List
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if not udev_device.device_node or self.sys_hardware.helper.hide_virtual_device(
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udev_device
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if not kernel.device_node or self.sys_hardware.helper.hide_virtual_device(
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kernel
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):
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return
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device = Device(
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udev_device.sys_name,
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Path(udev_device.device_node),
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Path(udev_device.sys_path),
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udev_device.subsystem,
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[Path(node) for node in udev_device.device_links],
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{attr: udev_device.properties[attr] for attr in udev_device.properties},
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)
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forward_action = None
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device = None
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# Update internal Database
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if action == "add":
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##
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# Remove
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if action in ("remove", "unbind") and udev is None:
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try:
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device = self.sys_hardware.get_by_path(Path(kernel.sys_path))
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except HardwareNotFound:
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return
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else:
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self.sys_hardware.delete_device(device)
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forward_action = UdevAction.REMOVE
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##
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# Add
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if action in ("add", "bind") and udev is not None:
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device = Device(
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udev.sys_name,
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Path(udev.device_node),
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Path(udev.sys_path),
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udev.subsystem,
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[Path(node) for node in udev.device_links],
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{attr: udev.properties[attr] for attr in udev.properties},
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)
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self.sys_hardware.update_device(device)
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if action == "remove":
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self.sys_hardware.delete_device(device)
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forward_action = UdevAction.ADD
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# Process device
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if self.sys_core.state in (CoreState.RUNNING, CoreState.FREEZE):
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# Process Action
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if (
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device
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and forward_action
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and self.sys_core.state in (CoreState.RUNNING, CoreState.FREEZE)
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):
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# New Sound device
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if device.subsystem == UdevSubsystem.AUDIO and action == "add":
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self._action_sound_add(device)
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if device.subsystem == UdevSubsystem.AUDIO:
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self._action_sound(device, forward_action)
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# New serial device
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if device.subsystem == UdevSubsystem.SERIAL and action == "add":
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self._action_tty_add(device)
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# serial device
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elif device.subsystem == UdevSubsystem.SERIAL:
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self._action_tty(device, forward_action)
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# New input device
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if device.subsystem == UdevSubsystem.INPUT and action == "add":
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self._action_input_add(device)
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# input device
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elif device.subsystem == UdevSubsystem.INPUT:
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self._action_input(device, forward_action)
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def _action_sound_add(self, device: Device):
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# USB device
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elif device.subsystem == UdevSubsystem.USB:
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self._action_usb(device, forward_action)
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def _action_sound(self, device: Device, action: UdevAction):
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"""Process sound actions."""
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_LOGGER.info("Detecting changed audio hardware - %s", device.path)
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if not self.sys_hardware.policy.is_match_cgroup(PolicyGroup.AUDIO, device):
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return
|
||||
_LOGGER.info("Detecting %s audio hardware - %s", action, device.path)
|
||||
self.sys_loop.call_later(2, self.sys_create_task, self.sys_host.sound.update())
|
||||
|
||||
def _action_tty_add(self, device: Device):
|
||||
def _action_tty(self, device: Device, action: UdevAction):
|
||||
"""Process tty actions."""
|
||||
_LOGGER.info(
|
||||
"Detecting changed serial hardware %s - %s", device.path, device.by_id
|
||||
)
|
||||
if not device.by_id:
|
||||
if not device.by_id or not self.sys_hardware.policy.is_match_cgroup(
|
||||
PolicyGroup.UART, device
|
||||
):
|
||||
return
|
||||
|
||||
# Start process TTY
|
||||
self.sys_loop.call_later(
|
||||
2,
|
||||
self.sys_create_task,
|
||||
self.sys_hardware.container.process_serial_device(device),
|
||||
_LOGGER.info(
|
||||
"Detecting %s serial hardware %s - %s", action, device.path, device.by_id
|
||||
)
|
||||
|
||||
def _action_input_add(self, device: Device):
|
||||
def _action_input(self, device: Device, action: UdevAction):
|
||||
"""Process input actions."""
|
||||
_LOGGER.info(
|
||||
"Detecting changed serial hardware %s - %s", device.path, device.by_id
|
||||
)
|
||||
if not device.by_id:
|
||||
return
|
||||
|
||||
# Start process input
|
||||
self.sys_loop.call_later(
|
||||
2,
|
||||
self.sys_create_task,
|
||||
self.sys_hardware.container.process_serial_device(device),
|
||||
_LOGGER.info(
|
||||
"Detecting %s serial hardware %s - %s", action, device.path, device.by_id
|
||||
)
|
||||
|
||||
def _action_usb(self, device: Device, action: UdevAction):
|
||||
"""Process usb actions."""
|
||||
if not self.sys_hardware.policy.is_match_cgroup(PolicyGroup.USB, device):
|
||||
return
|
||||
_LOGGER.info("Detecting %s usb hardware %s", action, device.path)
|
||||
|
||||
@ -14,6 +14,7 @@ _GROUP_CGROUPS: Dict[PolicyGroup, List[int]] = {
|
||||
PolicyGroup.GPIO: [254, 245],
|
||||
PolicyGroup.VIDEO: [239, 29, 81, 251, 242, 226],
|
||||
PolicyGroup.AUDIO: [116],
|
||||
PolicyGroup.USB: [189],
|
||||
}
|
||||
|
||||
|
||||
@ -24,6 +25,10 @@ class HwPolicy(CoreSysAttributes):
|
||||
"""Init hardware policy object."""
|
||||
self.coresys = coresys
|
||||
|
||||
def is_match_cgroup(self, group: PolicyGroup, device: Device) -> bool:
|
||||
"""Return true if device is in cgroup Policy."""
|
||||
return device.cgroups_major in _GROUP_CGROUPS.get(group, [])
|
||||
|
||||
def get_cgroups_rules(self, group: PolicyGroup) -> List[str]:
|
||||
"""Generate cgroups rules for a policy group."""
|
||||
return [f"c {dev}:* rwm" for dev in _GROUP_CGROUPS.get(group, [])]
|
||||
|
||||
@ -31,3 +31,18 @@ def test_policy_group(coresys):
|
||||
"c 242:* rwm",
|
||||
"c 226:* rwm",
|
||||
]
|
||||
|
||||
|
||||
def test_device_in_policy(coresys):
|
||||
"""Test device cgroup policy."""
|
||||
device = Device(
|
||||
"ttyACM0",
|
||||
Path("/dev/ttyACM0"),
|
||||
Path("/sys/bus/usb/001"),
|
||||
"tty",
|
||||
[],
|
||||
{"MAJOR": "204", "MINOR": "10"},
|
||||
)
|
||||
|
||||
assert coresys.hardware.policy.is_match_cgroup(PolicyGroup.UART, device)
|
||||
assert not coresys.hardware.policy.is_match_cgroup(PolicyGroup.GPIO, device)
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user