netdata/netdata

// SPDX-License-Identifier: GPL-3.0-or-later

//go:build linux

package hostinfo

import (
    "context"
    "regexp"
    "strconv"

    "github.com/coreos/go-systemd/v22/dbus"
)

var SystemdVersion = getSystemdVersion()

func getSystemdVersion() int {
    var reVersion = regexp.MustCompile(`[0-9][0-9][0-9]`)

    conn, err := dbus.NewWithContext(context.Background())
    if err != nil {
        return 0
    }
    defer conn.Close()

    version, err := conn.GetManagerProperty("Version")
    if err != nil {
        return 0
    }

    major := reVersion.FindString(version)
    if major == "" {
        return 0
    }

    ver, err := strconv.Atoi(major)
    if err != nil {
        return 0
    }

    return ver
}