1 files changed, 105 insertions, 0 deletions
diff --git a/sd_login/systemd_cgroup_systemd.go b/sd_login/systemd_cgroup_systemd.go
new file mode 100644
index 0000000..834d378
--- /dev/null
+++ b/sd_login/systemd_cgroup_systemd.go
@@ -0,0 +1,105 @@
+// 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()
+}