[Unit]
Description=NetworkManager Privileged Helper

#
# nm-priv-helper exists for privilege separation. It allows to run
# NetworkManager without certain capabilities, and ask nm-priv-helper
# for special operations where more privileges are required.
#

# While nm-priv-helper has privileges that NetworkManager has not, it
# does not mean that itself should run totally unconstrained. On the
# contrary, it also should only have permissions it requires.
#
# nm-priv-helper rejects all requests that come from any other than the
# name owner of "org.freedesktop.NetworkManager" (that is,
# NetworkManager process itself). It is thus only an implementation
# detail and provides no public API to the user.

[Service]
Type=dbus
BusName=org.freedesktop.nm_priv_helper
ExecStart=/usr/libexec/nm-priv-helper
NotifyAccess=main

# Extra configuration options. Set via `systemctl edit
# nm-priv-helper.service`:
#
# FOR TESTING ONLY: disable authentication to allow requests from
# everybody. Don't set this outside of testing!
#Environment=NM_PRIV_HELPER_NO_AUTH_FOR_TESTING=1
#
# The logging level for debug messages (to stdout).
#Environment=NM_PRIV_HELPER_LOG=TRACE
#
# nm-priv-helper will exit on idle after timeout. Set timeout here or
# set to 2147483647 for infinity.

#Environment=NM_PRIV_HELPER_IDLE_TIMEOUT_MSEC=10000


# Restrict:
AmbientCapabilities=
CapabilityBoundingSet=
PrivateDevices=true
PrivateMounts=true
PrivateNetwork=true
PrivateTmp=true
ProtectClock=true
ProtectControlGroups=true
ProtectHome=true
ProtectHostname=true
ProtectKernelLogs=true
ProtectKernelModules=true
ProtectKernelTunables=true
ProtectSystem=strict
RestrictAddressFamilies=
RestrictNamespaces=true
SystemCallFilter=~@clock
SystemCallFilter=~@cpu-emulation
SystemCallFilter=~@debug
SystemCallFilter=~@module
SystemCallFilter=~@mount
SystemCallFilter=~@obsolete
SystemCallFilter=~@privileged
SystemCallFilter=~@raw-io
SystemCallFilter=~@reboot
SystemCallFilter=~@swap
NoNewPrivileges=true
SupplementaryGroups=

# Grant:
CapabilityBoundingSet=CAP_DAC_OVERRIDE
PrivateUsers=no
RestrictAddressFamilies=AF_UNIX
SystemCallFilter=@resources