--- title: What Settings Are Currently Available For Transient Units? category: Interfaces layout: default SPDX-License-Identifier: LGPL-2.1-or-later --- # What Settings Are Currently Available For Transient Units? Our intention is to make all settings that are available as unit file settings also available for transient units, through the D-Bus API. At the moment, device, swap, and target units are not supported at all as transient units, but others are pretty well supported. The lists below contain all settings currently available in unit files. The ones currently available in transient units are prefixed with `✓`. ## Generic Unit Settings Most generic unit settings are available for transient units. ``` ✓ Description= ✓ Documentation= ✓ SourcePath= ✓ Requires= ✓ Requisite= ✓ Wants= ✓ BindsTo= ✓ Conflicts= ✓ Before= ✓ After= ✓ OnFailure= ✓ PropagatesReloadTo= ✓ ReloadPropagatedFrom= ✓ PartOf= ✓ Upholds= ✓ JoinsNamespaceOf= ✓ RequiresMountsFor= ✓ StopWhenUnneeded= ✓ RefuseManualStart= ✓ RefuseManualStop= ✓ AllowIsolate= ✓ DefaultDependencies= ✓ OnFailureJobMode= ✓ IgnoreOnIsolate= ✓ JobTimeoutSec= ✓ JobRunningTimeoutSec= ✓ JobTimeoutAction= ✓ JobTimeoutRebootArgument= ✓ StartLimitIntervalSec= ✓ StartLimitBurst= ✓ StartLimitAction= ✓ FailureAction= ✓ SuccessAction= ✓ FailureActionExitStatus= ✓ SuccessActionExitStatus= ✓ RebootArgument= ✓ ConditionPathExists= ✓ ConditionPathExistsGlob= ✓ ConditionPathIsDirectory= ✓ ConditionPathIsSymbolicLink= ✓ ConditionPathIsMountPoint= ✓ ConditionPathIsReadWrite= ✓ ConditionDirectoryNotEmpty= ✓ ConditionFileNotEmpty= ✓ ConditionFileIsExecutable= ✓ ConditionNeedsUpdate= ✓ ConditionFirstBoot= ✓ ConditionKernelCommandLine= ✓ ConditionKernelVersion= ✓ ConditionArchitecture= ✓ ConditionFirmware= ✓ ConditionVirtualization= ✓ ConditionSecurity= ✓ ConditionCapability= ✓ ConditionHost= ✓ ConditionACPower= ✓ ConditionUser= ✓ ConditionGroup= ✓ ConditionControlGroupController= ✓ AssertPathExists= ✓ AssertPathExistsGlob= ✓ AssertPathIsDirectory= ✓ AssertPathIsSymbolicLink= ✓ AssertPathIsMountPoint= ✓ AssertPathIsReadWrite= ✓ AssertDirectoryNotEmpty= ✓ AssertFileNotEmpty= ✓ AssertFileIsExecutable= ✓ AssertNeedsUpdate= ✓ AssertFirstBoot= ✓ AssertKernelCommandLine= ✓ AssertKernelVersion= ✓ AssertArchitecture= ✓ AssertVirtualization= ✓ AssertSecurity= ✓ AssertCapability= ✓ AssertHost= ✓ AssertACPower= ✓ AssertUser= ✓ AssertGroup= ✓ AssertControlGroupController= ✓ CollectMode= ``` ## Execution-Related Settings All execution-related settings are available for transient units. ``` ✓ WorkingDirectory= ✓ RootDirectory= ✓ RootImage= ✓ User= ✓ Group= ✓ SupplementaryGroups= ✓ Nice= ✓ OOMScoreAdjust= ✓ CoredumpFilter= ✓ IOSchedulingClass= ✓ IOSchedulingPriority= ✓ CPUSchedulingPolicy= ✓ CPUSchedulingPriority= ✓ CPUSchedulingResetOnFork= ✓ CPUAffinity= ✓ UMask= ✓ Environment= ✓ EnvironmentFile= ✓ PassEnvironment= ✓ UnsetEnvironment= ✓ DynamicUser= ✓ RemoveIPC= ✓ StandardInput= ✓ StandardOutput= ✓ StandardError= ✓ StandardInputText= ✓ StandardInputData= ✓ TTYPath= ✓ TTYReset= ✓ TTYVHangup= ✓ TTYVTDisallocate= ✓ TTYRows= ✓ TTYColumns= ✓ SyslogIdentifier= ✓ SyslogFacility= ✓ SyslogLevel= ✓ SyslogLevelPrefix= ✓ LogLevelMax= ✓ LogExtraFields= ✓ LogRateLimitIntervalSec= ✓ LogRateLimitBurst= ✓ SecureBits= ✓ CapabilityBoundingSet= ✓ AmbientCapabilities= ✓ TimerSlackNSec= ✓ NoNewPrivileges= ✓ KeyringMode= ✓ ProtectProc= ✓ ProcSubset= ✓ SystemCallFilter= ✓ SystemCallArchitectures= ✓ SystemCallErrorNumber= ✓ SystemCallLog= ✓ MemoryDenyWriteExecute= ✓ RestrictNamespaces= ✓ RestrictRealtime= ✓ RestrictSUIDSGID= ✓ RestrictAddressFamilies= ✓ RootHash= ✓ RootHashSignature= ✓ RootVerity= ✓ LockPersonality= ✓ LimitCPU= ✓ LimitFSIZE= ✓ LimitDATA= ✓ LimitSTACK= ✓ LimitCORE= ✓ LimitRSS= ✓ LimitNOFILE= ✓ LimitAS= ✓ LimitNPROC= ✓ LimitMEMLOCK= ✓ LimitLOCKS= ✓ LimitSIGPENDING= ✓ LimitMSGQUEUE= ✓ LimitNICE= ✓ LimitRTPRIO= ✓ LimitRTTIME= ✓ ReadWritePaths= ✓ ReadOnlyPaths= ✓ InaccessiblePaths= ✓ BindPaths= ✓ BindReadOnlyPaths= ✓ TemporaryFileSystem= ✓ PrivateTmp= ✓ PrivateDevices= ✓ PrivateMounts= ✓ ProtectKernelTunables= ✓ ProtectKernelModules= ✓ ProtectKernelLogs= ✓ ProtectControlGroups= ✓ PrivateNetwork= ✓ PrivateUsers= ✓ ProtectSystem= ✓ ProtectHome= ✓ ProtectClock= ✓ MountFlags= ✓ MountAPIVFS= ✓ Personality= ✓ RuntimeDirectoryPreserve= ✓ RuntimeDirectoryMode= ✓ RuntimeDirectory= ✓ StateDirectoryMode= ✓ StateDirectory= ✓ CacheDirectoryMode= ✓ CacheDirectory= ✓ LogsDirectoryMode= ✓ LogsDirectory= ✓ ConfigurationDirectoryMode= ✓ ConfigurationDirectory= ✓ PAMName= ✓ IgnoreSIGPIPE= ✓ UtmpIdentifier= ✓ UtmpMode= ✓ SELinuxContext= ✓ SmackProcessLabel= ✓ AppArmorProfile= ✓ Slice= ``` ## Resource Control Settings All cgroup/resource control settings are available for transient units ``` ✓ CPUAccounting= ✓ CPUWeight= ✓ StartupCPUWeight= ✓ CPUShares= ✓ StartupCPUShares= ✓ CPUQuota= ✓ CPUQuotaPeriodSec= ✓ AllowedCPUs= ✓ StartupAllowedCPUs= ✓ AllowedMemoryNodes= ✓ StartupAllowedMemoryNodes= ✓ MemoryAccounting= ✓ DefaultMemoryMin= ✓ MemoryMin= ✓ DefaultMemoryLow= ✓ MemoryLow= ✓ MemoryHigh= ✓ MemoryMax= ✓ MemorySwapMax= ✓ MemoryLimit= ✓ DeviceAllow= ✓ DevicePolicy= ✓ IOAccounting= ✓ IOWeight= ✓ StartupIOWeight= ✓ IODeviceWeight= ✓ IOReadBandwidthMax= ✓ IOWriteBandwidthMax= ✓ IOReadIOPSMax= ✓ IOWriteIOPSMax= ✓ BlockIOAccounting= ✓ BlockIOWeight= ✓ StartupBlockIOWeight= ✓ BlockIODeviceWeight= ✓ BlockIOReadBandwidth= ✓ BlockIOWriteBandwidth= ✓ TasksAccounting= ✓ TasksMax= ✓ Delegate= ✓ DisableControllers= ✓ IPAccounting= ✓ IPAddressAllow= ✓ IPAddressDeny= ✓ ManagedOOMSwap= ✓ ManagedOOMMemoryPressure= ✓ ManagedOOMMemoryPressureLimit= ✓ ManagedOOMPreference= ``` ## Process Killing Settings All process killing settings are available for transient units: ``` ✓ SendSIGKILL= ✓ SendSIGHUP= ✓ KillMode= ✓ KillSignal= ✓ RestartKillSignal= ✓ FinalKillSignal= ✓ WatchdogSignal= ``` ## Service Unit Settings Most service unit settings are available for transient units. ``` ✓ BusName= ✓ ExecCondition= ✓ ExecReload= ✓ ExecStart= ✓ ExecStartPost= ✓ ExecStartPre= ✓ ExecStop= ✓ ExecStopPost= ✓ ExitType= ✓ FileDescriptorStoreMax= ✓ GuessMainPID= ✓ NonBlocking= ✓ NotifyAccess= ✓ OOMPolicy= ✓ PIDFile= ✓ RemainAfterExit= ✓ Restart= ✓ RestartForceExitStatus= ✓ RestartPreventExitStatus= ✓ RestartSec= ✓ RootDirectoryStartOnly= ✓ RuntimeMaxSec= ✓ RuntimeRandomizedExtraSec= Sockets= ✓ SuccessExitStatus= ✓ TimeoutAbortSec= ✓ TimeoutSec= ✓ TimeoutStartFailureMode= ✓ TimeoutStartSec= ✓ TimeoutStopFailureMode= ✓ TimeoutStopSec= ✓ Type= ✓ USBFunctionDescriptors= ✓ USBFunctionStrings= ✓ WatchdogSec= ``` ## Mount Unit Settings All mount unit settings are available to transient units: ``` ✓ What= ✓ Where= ✓ Options= ✓ Type= ✓ TimeoutSec= ✓ DirectoryMode= ✓ SloppyOptions= ✓ LazyUnmount= ✓ ForceUnmount= ✓ ReadWriteOnly= ``` ## Automount Unit Settings All automount unit setting is available to transient units: ``` ✓ Where= ✓ DirectoryMode= ✓ TimeoutIdleSec= ``` ## Timer Unit Settings Most timer unit settings are available to transient units. ``` ✓ OnActiveSec= ✓ OnBootSec= ✓ OnCalendar= ✓ OnClockChange= ✓ OnStartupSec= ✓ OnTimezoneChange= ✓ OnUnitActiveSec= ✓ OnUnitInactiveSec= ✓ Persistent= ✓ WakeSystem= ✓ RemainAfterElapse= ✓ AccuracySec= ✓ RandomizedDelaySec= ✓ FixedRandomDelay= Unit= ``` ## Slice Unit Settings Slice units are fully supported as transient units, but they have no settings of their own beyond the generic unit and resource control settings. ## Scope Unit Settings Scope units are fully supported as transient units (in fact they only exist as such). ``` ✓ RuntimeMaxSec= ✓ RuntimeRandomizedExtraSec= ✓ TimeoutStopSec= ``` ## Socket Unit Settings Most socket unit settings are available to transient units. ``` ✓ ListenStream= ✓ ListenDatagram= ✓ ListenSequentialPacket= ✓ ListenFIFO= ✓ ListenNetlink= ✓ ListenSpecial= ✓ ListenMessageQueue= ✓ ListenUSBFunction= ✓ SocketProtocol= ✓ BindIPv6Only= ✓ Backlog= ✓ BindToDevice= ✓ ExecStartPre= ✓ ExecStartPost= ✓ ExecStopPre= ✓ ExecStopPost= ✓ TimeoutSec= ✓ SocketUser= ✓ SocketGroup= ✓ SocketMode= ✓ DirectoryMode= ✓ Accept= ✓ FlushPending= ✓ Writable= ✓ MaxConnections= ✓ MaxConnectionsPerSource= ✓ KeepAlive= ✓ KeepAliveTimeSec= ✓ KeepAliveIntervalSec= ✓ KeepAliveProbes= ✓ DeferAcceptSec= ✓ NoDelay= ✓ Priority= ✓ ReceiveBuffer= ✓ SendBuffer= ✓ IPTOS= ✓ IPTTL= ✓ Mark= ✓ PipeSize= ✓ FreeBind= ✓ Transparent= ✓ Broadcast= ✓ PassCredentials= ✓ PassSecurity= ✓ PassPacketInfo= ✓ TCPCongestion= ✓ ReusePort= ✓ MessageQueueMaxMessages= ✓ MessageQueueMessageSize= ✓ RemoveOnStop= ✓ Symlinks= ✓ FileDescriptorName= Service= ✓ TriggerLimitIntervalSec= ✓ TriggerLimitBurst= ✓ SmackLabel= ✓ SmackLabelIPIn= ✓ SmackLabelIPOut= ✓ SELinuxContextFromNet= ``` ## Swap Unit Settings Swap units are currently not available at all as transient units: ``` What= Priority= Options= TimeoutSec= ``` ## Path Unit Settings Most path unit settings are available to transient units. ``` ✓ PathExists= ✓ PathExistsGlob= ✓ PathChanged= ✓ PathModified= ✓ DirectoryNotEmpty= Unit= ✓ MakeDirectory= ✓ DirectoryMode= ``` ## Install Section The `[Install]` section is currently not available at all for transient units, and it probably doesn't even make sense. ``` Alias= WantedBy= RequiredBy= Also= DefaultInstance= ```
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