#  SPDX-License-Identifier: LGPL-2.1-or-later
#
#  This file is part of systemd.
#
#  systemd is free software; you can redistribute it and/or modify it
#  under the terms of the GNU Lesser General Public License as published by
#  the Free Software Foundation; either version 2.1 of the License, or
#  (at your option) any later version.

[Unit]
Description=Userspace Out-Of-Memory (OOM) Killer
Documentation=man:systemd-oomd.service(8)
Documentation=man:org.freedesktop.oom1(5)
DefaultDependencies=no
Before=multi-user.target shutdown.target
Conflicts=shutdown.target
ConditionControlGroupController=v2
ConditionControlGroupController=memory
ConditionPathExists=/proc/pressure/cpu
ConditionPathExists=/proc/pressure/io
ConditionPathExists=/proc/pressure/memory
Requires=systemd-oomd.socket
After=systemd-oomd.socket

[Service]
AmbientCapabilities=CAP_KILL CAP_DAC_OVERRIDE
BusName=org.freedesktop.oom1
CapabilityBoundingSet=CAP_KILL CAP_DAC_OVERRIDE
ExecStart=/usr/lib/systemd/systemd-oomd
IPAddressDeny=any
LockPersonality=yes
MemoryDenyWriteExecute=yes
# Reserve some minimum amount of memory so that systemd-oomd can continue to
# run in resource starved scenarios.
MemoryMin=64M
MemoryLow=64M
NoNewPrivileges=yes
OOMScoreAdjust=-900
PrivateDevices=yes
PrivateTmp=disconnected
ProtectClock=yes
ProtectHome=yes
ProtectHostname=yes
ProtectKernelLogs=yes
ProtectKernelModules=yes
ProtectKernelTunables=yes
ProtectSystem=strict
Restart=on-failure
RestrictAddressFamilies=AF_UNIX
RestrictNamespaces=yes
RestrictRealtime=yes
RestrictSUIDSGID=yes
SystemCallArchitectures=native
SystemCallErrorNumber=EPERM
SystemCallFilter=@system-service
Type=notify
User=systemd-oom
WatchdogSec=3min

[Install]
WantedBy=multi-user.target
Alias=dbus-org.freedesktop.oom1.service