Mini Shell

#  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=Journal Service
Documentation=man:systemd-journald.service(8) man:journald.conf(5)
DefaultDependencies=no
Requires=systemd-journald.socket
After=systemd-journald.socket systemd-journald-dev-log.socket syslog.socket
Before=sysinit.target

# Mount and swap units need the journal socket units. If they were removed by
# an isolate request the mount and swap units would be removed too, hence let's
# exclude systemd-journald and its sockets from isolate requests.
IgnoreOnIsolate=yes

[Service]
DeviceAllow=char-* rw
ExecStart=/usr/lib/systemd/systemd-journald
FileDescriptorStoreMax=4224
IPAddressDeny=any
LockPersonality=yes
MemoryDenyWriteExecute=yes
NoNewPrivileges=yes
OOMScoreAdjust=-250
ProtectClock=yes
Restart=always
RestartSec=0
RestrictAddressFamilies=AF_UNIX AF_NETLINK
RestrictNamespaces=yes
RestrictRealtime=yes
RestrictSUIDSGID=yes
RuntimeDirectory=systemd/journal
RuntimeDirectoryPreserve=yes
Sockets=systemd-journald.socket systemd-journald-dev-log.socket
StandardOutput=null
SystemCallArchitectures=native
SystemCallErrorNumber=EPERM
SystemCallFilter=@system-service
Type=notify
WatchdogSec=3min

# In case you're wondering why CAP_SYS_PTRACE is needed, access to
# /proc/<pid>/exe requires this capability. Thus if this capability is missing
# the _EXE=/OBJECT_EXE= fields will be missing from the journal entries.
CapabilityBoundingSet=CAP_SYS_ADMIN CAP_DAC_OVERRIDE CAP_SYS_PTRACE CAP_SYSLOG CAP_AUDIT_CONTROL CAP_AUDIT_READ CAP_CHOWN CAP_DAC_READ_SEARCH CAP_FOWNER CAP_SETUID CAP_SETGID CAP_MAC_OVERRIDE

# If there are many split up journal files we need a lot of fds to access them
# all in parallel.
LimitNOFILE=524288