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// Copyright 2022 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//go:build !noselinux
// +build !noselinux
package collector
import (
"log/slog"
"github.com/opencontainers/selinux/go-selinux"
"github.com/prometheus/client_golang/prometheus"
)
type selinuxCollector struct {
configMode *prometheus.Desc
currentMode *prometheus.Desc
enabled *prometheus.Desc
logger *slog.Logger
}
func init() {
registerCollector("selinux", defaultEnabled, NewSelinuxCollector)
}
// NewSelinuxCollector returns a new Collector exposing SELinux statistics.
func NewSelinuxCollector(logger *slog.Logger) (Collector, error) {
const subsystem = "selinux"
return &selinuxCollector{
configMode: prometheus.NewDesc(
prometheus.BuildFQName(namespace, subsystem, "config_mode"),
"Configured SELinux enforcement mode",
nil, nil,
),
currentMode: prometheus.NewDesc(
prometheus.BuildFQName(namespace, subsystem, "current_mode"),
"Current SELinux enforcement mode",
nil, nil,
),
enabled: prometheus.NewDesc(
prometheus.BuildFQName(namespace, subsystem, "enabled"),
"SELinux is enabled, 1 is true, 0 is false",
nil, nil,
),
logger: logger,
}, nil
}
func (c *selinuxCollector) Update(ch chan<- prometheus.Metric) error {
if !selinux.GetEnabled() {
ch <- prometheus.MustNewConstMetric(
c.enabled, prometheus.GaugeValue, 0)
return nil
}
ch <- prometheus.MustNewConstMetric(
c.enabled, prometheus.GaugeValue, 1)
ch <- prometheus.MustNewConstMetric(
c.configMode, prometheus.GaugeValue, float64(selinux.DefaultEnforceMode()))
ch <- prometheus.MustNewConstMetric(
c.currentMode, prometheus.GaugeValue, float64(selinux.EnforceMode()))
return nil
}
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