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// Copyright (C) 2016 Luke Shumaker <lukeshu@sbcglobal.net>
//
// 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.
package sd_login
import (
"strconv"
"strings"
"golang.org/x/sys/unix"
)
type Machine string
// running VMs/containers
func GetMachines() ([]Machine, error) {
strs, err := get_files_in_directory("/run/systemd/machines/")
if err != nil {
return nil, err
}
var machines []Machine
for _, str := range strs {
if strings.HasPrefix(str, "unit:") || !valid_machine_name(str) {
continue
}
machines = append(machines, Machine(str))
}
return machines, nil
}
func (m Machine) GetClass() (string, error) {
env, err := parse_env_file("/run/systemd/machines/" + string(m))
if err != nil {
return "", err
}
class, ok := env["CLASS"]
if !ok {
return "", unix.ENXIO // or EIO?
}
return class, nil
}
func (m Machine) GetIfIndices() ([]int, error) {
env, err := parse_env_file("/run/systemd/machines/" + string(m))
if err != nil {
return nil, err
}
netif, ok := env["NETIF"]
if !ok {
return nil, unix.ENXIO // or EIO?
}
var ifindices []int
for _, word := range strings.FieldsFunc(netif, func(c rune) bool { return strings.ContainsRune(whitespace, c) }) {
ifindex, err := strconv.Atoi(word)
if err != nil {
return nil, err
}
ifindices = append(ifindices, ifindex)
}
return ifindices, nil
}
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