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Preview: plugin_selinux.py Size: 2.27 KB

/proc/thread-self/root/lib/python3.6/site-packages/tuned/plugins/plugin_selinux.py

import os
import errno
from . import base
from .decorators import *
import tuned.logs
from tuned.plugins import exceptions
from tuned.utils.commands import commands

log = tuned.logs.get()

class SelinuxPlugin(base.Plugin):
	"""
	`selinux`::
	
	Plug-in for tuning SELinux options.
	+
	SELinux decisions, such as allowing or denying access, are
	cached. This cache is known as the Access Vector Cache (AVC). When
	using these cached decisions, SELinux policy rules need to be checked
	less, which increases performance. The [option]`avc_cache_threshold`
	option allows adjusting the maximum number of AVC entries.
	+
	NOTE: Prior to changing the default value, evaluate the system
	performance with care. Increasing the value could potentially
	decrease the performance by making AVC slow.
	+
	.Increase the AVC cache threshold for hosts with containers.
	====
	----
	[selinux]
	avc_cache_threshold=8192
	----
	====
	"""

	@classmethod
	def _get_selinux_path(self):
		path = "/sys/fs/selinux"
		if not os.path.exists(path):
			path = "/selinux"
			if not os.path.exists(path):
				path = None
		return path

	def __init__(self, *args, **kwargs):
		self._cmd = commands()
		self._selinux_path = self._get_selinux_path()
		if self._selinux_path is None:
			raise exceptions.NotSupportedPluginException("SELinux is not enabled on your system or incompatible version is used.")
		self._cache_threshold_path = os.path.join(self._selinux_path, "avc", "cache_threshold")
		super(SelinuxPlugin, self).__init__(*args, **kwargs)

	@classmethod
	def _get_config_options(self):
		return {
			"avc_cache_threshold" : None,
		}

	def _instance_init(self, instance):
		instance._has_static_tuning = True
		instance._has_dynamic_tuning = False

	def _instance_cleanup(self, instance):
		pass

	@command_set("avc_cache_threshold")
	def _set_avc_cache_threshold(self, value, sim, remove):
		if value is None:
			return None
		threshold = int(value)
		if threshold >= 0:
			if not sim:
				self._cmd.write_to_file(self._cache_threshold_path, threshold, \
					no_error = [errno.ENOENT] if remove else False)
			return threshold
		else:
			return None

	@command_get("avc_cache_threshold")
	def _get_avc_cache_threshold(self):
		value = self._cmd.read_file(self._cache_threshold_path)
		if len(value) > 0:
			return int(value)
		return None

Name	Size	Perms	Modified	Actions
instance DIR	-	drwxr-xr-x	2025-03-30 04:15:50	Edit Download recursive recursive
__pycache__ DIR	-	drwxr-xr-x	2025-03-30 04:15:50	Edit Download recursive recursive
base.py	21.89 KB	lrw-r--r--	2024-02-22 12:23:28	Edit Download recursive recursive
decorators.py	983 B	lrw-r--r--	2024-02-22 12:23:28	Edit Download recursive recursive
exceptions.py	99 B	lrw-r--r--	2024-02-22 12:23:28	Edit Download recursive recursive
hotplug.py	3.84 KB	lrw-r--r--	2024-02-22 12:23:28	Edit Download recursive recursive
plugin_acpi.py	2.39 KB	lrw-r--r--	2024-02-22 12:23:28	Edit Download recursive recursive
plugin_audio.py	3.13 KB	lrw-r--r--	2024-02-22 12:23:28	Edit Download recursive recursive
plugin_bootloader.py	25.31 KB	lrw-r--r--	2024-02-22 12:23:28	Edit Download recursive recursive
plugin_cpu.py	27.56 KB	lrw-r--r--	2024-02-22 12:23:28	Edit Download recursive recursive
plugin_disk.py	16.65 KB	lrw-r--r--	2025-03-11 07:42:24	Edit Download recursive recursive
plugin_eeepc_she.py	2.88 KB	lrw-r--r--	2024-02-22 12:23:28	Edit Download recursive recursive
plugin_irqbalance.py	3.47 KB	lrw-r--r--	2024-02-22 12:23:28	Edit Download recursive recursive
plugin_modules.py	4.81 KB	lrw-r--r--	2024-02-22 12:23:28	Edit Download recursive recursive
plugin_mounts.py	5.45 KB	lrw-r--r--	2024-02-22 12:23:28	Edit Download recursive recursive
plugin_net.py	22.71 KB	lrw-r--r--	2024-02-22 12:23:28	Edit Download recursive recursive
plugin_rtentsk.py	1.08 KB	lrw-r--r--	2024-02-22 12:23:28	Edit Download recursive recursive
plugin_scheduler.py	54.94 KB	lrw-r--r--	2024-02-22 12:23:28	Edit Download recursive recursive
plugin_script.py	3.76 KB	lrw-r--r--	2024-02-22 12:23:28	Edit Download recursive recursive
plugin_scsi_host.py	3.08 KB	lrw-r--r--	2024-02-22 12:23:28	Edit Download recursive recursive
plugin_selinux.py	2.27 KB	lrw-r--r--	2024-02-22 12:23:28	Edit Download recursive recursive
plugin_service.py	10.47 KB	lrw-r--r--	2024-02-22 12:23:28	Edit Download recursive recursive
plugin_sysctl.py	6.74 KB	lrw-r--r--	2024-02-22 12:23:28	Edit Download recursive recursive
plugin_sysfs.py	2.63 KB	lrw-r--r--	2024-02-22 12:23:28	Edit Download recursive recursive
plugin_systemd.py	5.30 KB	lrw-r--r--	2024-02-22 12:23:28	Edit Download recursive recursive
plugin_uncore.py	4.61 KB	lrw-r--r--	2024-02-22 12:23:28	Edit Download recursive recursive
plugin_usb.py	1.97 KB	lrw-r--r--	2024-02-22 12:23:28	Edit Download recursive recursive
plugin_video.py	3.72 KB	lrw-r--r--	2024-02-22 12:23:28	Edit Download recursive recursive
plugin_vm.py	3.48 KB	lrw-r--r--	2024-02-22 12:23:28	Edit Download recursive recursive
repository.py	1.49 KB	lrw-r--r--	2024-02-22 12:23:28	Edit Download recursive recursive
__init__.py	49 B	lrw-r--r--	2024-02-22 12:23:28	Edit Download recursive recursive

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