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systemd/units/systemd-nsresourced.service.in
Lennart Poettering 273d14f5dd nsresourced: make sure "tun" driver is properly loaded and accessible
We need access to /dev/net/tun, hence make sure we can actually see
/dev/. Also make sure the module is properly loaded before we operate,
given that we run with limit caps. But then again give the CAP_NET_ADMIN
cap, since we need to configure the network tap/tun devices.

Follow-up for: 1365034727
2025-06-14 00:59:37 +02:00

50 lines
1.4 KiB
SYSTEMD

# 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=Namespace Resource Manager
Documentation=man:systemd-nsresourced.service(8)
Requires=systemd-nsresourced.socket
Conflicts=shutdown.target
Before=sysinit.target shutdown.target
Wants=modprobe@tun.service
After=modprobe@tun.service
DefaultDependencies=no
[Service]
CapabilityBoundingSet=CAP_DAC_READ_SEARCH CAP_SYS_RESOURCE CAP_BPF CAP_PERFMON CAP_SETGID CAP_SETUID CAP_SYS_ADMIN CAP_CHOWN CAP_FOWNER CAP_NET_ADMIN
ExecStart={{LIBEXECDIR}}/systemd-nsresourced
IPAddressDeny=any
LimitNOFILE={{HIGH_RLIMIT_NOFILE}}
LockPersonality=yes
MemoryDenyWriteExecute=yes
NoNewPrivileges=yes
DevicePolicy=closed
DeviceAllow=/dev/net/tun rwm
ProtectProc=invisible
ProtectControlGroups=yes
ProtectHome=yes
ProtectHostname=yes
ProtectKernelLogs=yes
ProtectKernelModules=yes
ProtectSystem=strict
RestrictAddressFamilies=AF_UNIX AF_NETLINK
RestrictRealtime=yes
RestrictSUIDSGID=yes
SystemCallArchitectures=native
SystemCallErrorNumber=EPERM
SystemCallFilter=@system-service bpf perf_event_open open_by_handle_at
Type=notify
NotifyAccess=all
FileDescriptorStoreMax=4096
{{SERVICE_WATCHDOG}}
[Install]
Also=systemd-nsresourced.socket