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-rw-r--r--whatmaps/systemd.py41
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diff --git a/whatmaps/systemd.py b/whatmaps/systemd.py
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+# vim: set fileencoding=utf-8 :
+#
+# (C) 2014 Guido G√ľnther <agx@sigxcpu.org>
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+
+import os
+import subprocess
+
+
+class Systemd(object):
+ """Systemd init system"""
+
+ def __init__(self):
+ if not self.is_running():
+ raise ValueError("Systemd not running")
+
+ @staticmethod
+ def is_running():
+ return os.path.exists("/run/systemd/system")
+
+ @staticmethod
+ def process_to_unit(process):
+ cmd = ['systemctl', 'status', "%d" % process.pid]
+ systemctl_status = subprocess.Popen(cmd, stdout=subprocess.PIPE)
+ output = systemctl_status.communicate()[0]
+ if systemctl_status.returncode:
+ return None
+ else:
+ return output.split()[0]