Mini Shell

[Unit]
Description=Daemon for power management
Documentation=man:upowerd(8)

[Service]
Type=dbus
BusName=org.freedesktop.UPower
ExecStart=/usr/libexec/upowerd
Restart=on-failure

# Filesystem lockdown
ProtectSystem=strict
# Needed by keyboard backlight support
ProtectKernelTunables=false
ProtectControlGroups=true
ReadWritePaths=/var/lib/upower
StateDirectory=upower
ProtectHome=true
PrivateTmp=true

# Network
# PrivateNetwork=true would block udev's netlink socket
IPAddressDeny=any
RestrictAddressFamilies=AF_UNIX AF_NETLINK

# Execute Mappings
MemoryDenyWriteExecute=true

# Modules
ProtectKernelModules=true

# Real-time
RestrictRealtime=true

# Privilege escalation
NoNewPrivileges=true

# Capabilities
CapabilityBoundingSet=

# System call interfaces
LockPersonality=yes
SystemCallArchitectures=native
SystemCallFilter=@system-service
SystemCallFilter=ioprio_get

# Namespaces
PrivateUsers=yes
RestrictNamespaces=yes

# Locked memory
LimitMEMLOCK=0

[Install]
WantedBy=graphical.target