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Filename : systemd-logind.service
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#  SPDX-License-Identifier: LGPL-2.1+
#
#  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=Login Service
Documentation=man:systemd-logind.service(8) man:logind.conf(5)
Documentation=https://www.freedesktop.org/wiki/Software/systemd/logind
Documentation=https://www.freedesktop.org/wiki/Software/systemd/multiseat
Wants=user.slice modprobe@drm.service
After=nss-user-lookup.target user.slice modprobe@drm.service
ConditionPathExists=/lib/systemd/system/dbus.service

# Ask for the dbus socket.
Wants=dbus.socket
After=dbus.socket

[Service]
BusName=org.freedesktop.login1
CapabilityBoundingSet=CAP_SYS_ADMIN CAP_MAC_ADMIN CAP_AUDIT_CONTROL CAP_CHOWN CAP_DAC_READ_SEARCH CAP_DAC_OVERRIDE CAP_FOWNER CAP_SYS_TTY_CONFIG CAP_LINUX_IMMUTABLE
DeviceAllow=block-* r
DeviceAllow=char-/dev/console rw
DeviceAllow=char-drm rw
DeviceAllow=char-input rw
DeviceAllow=char-tty rw
DeviceAllow=char-vcs rw
# Make sure the DeviceAllow= lines above can work correctly when referenceing char-drm
ExecStart=/lib/systemd/systemd-logind
FileDescriptorStoreMax=512
IPAddressDeny=any
LockPersonality=yes
MemoryDenyWriteExecute=yes
NoNewPrivileges=yes
PrivateTmp=yes
ProtectControlGroups=yes
ProtectHome=yes
ProtectHostname=yes
ProtectKernelModules=yes
ProtectKernelLogs=yes
ProtectSystem=strict
ReadWritePaths=/etc /run
Restart=always
RestartSec=0
RestrictAddressFamilies=AF_UNIX AF_NETLINK
RestrictNamespaces=yes
RestrictRealtime=yes
RestrictSUIDSGID=yes
RuntimeDirectory=systemd/sessions systemd/seats systemd/users systemd/inhibit systemd/shutdown
RuntimeDirectoryPreserve=yes
StateDirectory=systemd/linger
SystemCallArchitectures=native
SystemCallErrorNumber=EPERM
SystemCallFilter=@system-service
WatchdogSec=3min

# Increase the default a bit in order to allow many simultaneous logins since
# we keep one fd open per session.
LimitNOFILE=524288