[Unit]
Description=Fingerprint Authentication Daemon
Documentation=man:fprintd(1)
[Service]
Type=dbus
BusName=net.reactivated.Fprint
ExecStart=/usr/libexec/fprintd
# Filesystem lockdown
ProtectSystem=strict
ProtectKernelTunables=true
ProtectKernelLogs=true
ProtectControlGroups=true
# This always corresponds to /var/lib/fprint
StateDirectory=fprint
StateDirectoryMode=0700
ProtectHome=true
PrivateTmp=true
SystemCallFilter=@system-service
# Network
PrivateNetwork=true
RestrictAddressFamilies=AF_UNIX AF_LOCAL AF_NETLINK
# Execute Mappings
MemoryDenyWriteExecute=true
# Modules
ProtectKernelModules=true
# Real-time
RestrictRealtime=true
# Privilege escalation
NoNewPrivileges=true
# Protect clock, allow USB and SPI device access
ProtectClock=yes
DeviceAllow=char-usb_device rw
DeviceAllow=char-spi rw
DeviceAllow=char-hidraw rw
# Allow tuning USB parameters (wakeup and persist)
ReadWritePaths=/sys/devices