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// Copyright (C) 2016-2017 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 (
"os"
"strconv"
"strings"
)
// XXX: logind
func (cgroup _Cgroup) GetSession() SessionName {
unit := cgroup.GetUnit()
session, ok := trimPrefixSuffix(unit, "session-", ".scope")
if !ok || !valid_session_name(session) {
return ""
}
return SessionName(session)
}
func (cgroup _Cgroup) GetOwnerUser() UserID {
slice := cgroup.GetSlice()
uid_str, ok := trimPrefixSuffix(slice, "user-", ".slice")
if !ok {
return -1
}
uid, err := strconv.Atoi(uid_str)
if err != nil {
return -1
}
return UserID(uid)
}
// XXX: machined
func (cgroup _Cgroup) GetMachine() MachineName {
unit := cgroup.GetUnit()
if unit == "" {
return ""
}
machine, err := os.Readlink("/run/systemd/machines/unit:" + unit)
if err != nil {
return ""
}
return MachineName(machine)
}
// XXX: systemd
func (cgroup _Cgroup) decodeUnit() string {
unit, _ := split2(string(cgroup), '/')
if len(unit) < 3 {
return ""
}
unit = cgUnescape(unit)
if valid_unit_name(unit)&(unit_name_plain|unit_name_instance) == 0 {
return ""
}
return unit
}
func (cgroup _Cgroup) GetUnit() string {
unit := cgroup.MaybeSkipSlices().decodeUnit()
if strings.HasSuffix(unit, ".slice") {
return ""
}
return unit
}
func (cgroup _Cgroup) GetUserUnit() string {
return cgroup.MustSkipUserPrefix().GetUnit()
}
func (cgroup _Cgroup) GetSlice() string {
cg := string(cgroup)
n := 0
for {
cg = strings.TrimLeft(cg, "/")
part, rest := split2(cg, '/')
if !valid_slice_name(part) {
if n == 0 {
return "-.slice"
}
return _Cgroup(cg).decodeUnit()
}
cg = rest
}
}
func (cgroup _Cgroup) GetUserSlice() string {
return cgroup.MustSkipUserPrefix().GetSlice()
}
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