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systemd: allow logind.conf.d user configurations
Signed-off-by: Matthias Reichl <hias@horus.com>
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Matthias Reichl
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233
packages/sysutils/systemd/config/logind.conf.d/README
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packages/sysutils/systemd/config/logind.conf.d/README
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LOGIND.CONF(5) logind.conf LOGIND.CONF(5)
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NAME
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logind.conf, logind.conf.d - Login manager configuration files
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SYNOPSIS
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/etc/systemd/logind.conf
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/etc/systemd/logind.conf.d/*.conf
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/run/systemd/logind.conf.d/*.conf
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/usr/lib/systemd/logind.conf.d/*.conf
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DESCRIPTION
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These files configure various parameters of the systemd login manager,
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systemd-logind.service(8).
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CONFIGURATION DIRECTORIES AND PRECEDENCE
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The default configuration is defined during compilation, so a
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configuration file is only needed when it is necessary to deviate from
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those defaults. By default, the configuration file in /etc/systemd/
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contains commented out entries showing the defaults as a guide to the
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administrator. This file can be edited to create local overrides.
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When packages need to customize the configuration, they can install
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configuration snippets in /usr/lib/systemd/*.conf.d/. Files in /etc/
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are reserved for the local administrator, who may use this logic to
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override the configuration files installed by vendor packages. The main
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configuration file is read before any of the configuration directories,
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and has the lowest precedence; entries in a file in any configuration
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directory override entries in the single configuration file. Files in
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the *.conf.d/ configuration subdirectories are sorted by their filename
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in lexicographic order, regardless of which of the subdirectories they
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reside in. When multiple files specify the same option, for options
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which accept just a single value, the entry in the file with the
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lexicographically latest name takes precedence. For options which
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accept a list of values, entries are collected as they occur in files
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sorted lexicographically. It is recommended to prefix all filenames in
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those subdirectories with a two-digit number and a dash, to simplify
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the ordering of the files.
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To disable a configuration file supplied by the vendor, the recommended
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way is to place a symlink to /dev/null in the configuration directory
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in /etc/, with the same filename as the vendor configuration file.
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OPTIONS
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All options are configured in the "[Login]" section:
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NAutoVTs=
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Takes a positive integer. Configures how many virtual terminals
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(VTs) to allocate by default that, when switched to and are
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previously unused, "autovt" services are automatically spawned on.
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These services are instantiated from the template unit
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autovt@.service for the respective VT TTY name, for example,
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autovt@tty4.service. By default, autovt@.service is linked to
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getty@.service. In other words, login prompts are started
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dynamically as the user switches to unused virtual terminals.
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Hence, this parameter controls how many login "gettys" are
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available on the VTs. If a VT is already used by some other
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subsystem (for example, a graphical login), this kind of activation
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will not be attempted. Note that the VT configured in ReserveVT= is
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always subject to this kind of activation, even if it is not one of
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the VTs configured with the NAutoVTs= directive. Defaults to 6.
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When set to 0, automatic spawning of "autovt" services is disabled.
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ReserveVT=
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Takes a positive integer. Identifies one virtual terminal that
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shall unconditionally be reserved for autovt@.service activation
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(see above). The VT selected with this option will be marked busy
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unconditionally, so that no other subsystem will allocate it. This
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functionality is useful to ensure that, regardless of how many VTs
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are allocated by other subsystems, one login "getty" is always
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available. Defaults to 6 (in other words, there will always be a
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"getty" available on Alt-F6.). When set to 0, VT reservation is
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disabled.
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KillUserProcesses=
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Takes a boolean argument. Configures whether the processes of a
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user should be killed when the user logs out. If true, the scope
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unit corresponding to the session and all processes inside that
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scope will be terminated. If false, the scope is "abandoned", see
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systemd.scope(5), and processes are not killed. Defaults to "yes",
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but see the options KillOnlyUsers= and KillExcludeUsers= below.
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In addition to session processes, user process may run under the
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user manager unit user@.service. Depending on the linger settings,
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this may allow users to run processes independent of their login
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sessions. See the description of enable-linger in loginctl(1).
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Note that setting KillUserProcesses=yes will break tools like
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screen(1) and tmux(1), unless they are moved out of the session
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scope. See example in systemd-run(1).
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KillOnlyUsers=, KillExcludeUsers=
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These settings take space-separated lists of usernames that
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override the KillUserProcesses= setting. A user name may be added
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to KillExcludeUsers= to exclude the processes in the session scopes
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of that user from being killed even if KillUserProcesses=yes is
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set. If KillExcludeUsers= is not set, the "root" user is excluded
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by default. KillExcludeUsers= may be set to an empty value to
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override this default. If a user is not excluded, KillOnlyUsers= is
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checked next. If this setting is specified, only the session scopes
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of those users will be killed. Otherwise, users are subject to the
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KillUserProcesses=yes setting.
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IdleAction=
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Configures the action to take when the system is idle. Takes one of
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"ignore", "poweroff", "reboot", "halt", "kexec", "suspend",
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"hibernate", "hybrid-sleep", and "lock". Defaults to "ignore".
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Note that this requires that user sessions correctly report the
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idle status to the system. The system will execute the action after
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all sessions report that they are idle, no idle inhibitor lock is
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active, and subsequently, the time configured with IdleActionSec=
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(see below) has expired.
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IdleActionSec=
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Configures the delay after which the action configured in
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IdleAction= (see above) is taken after the system is idle.
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InhibitDelayMaxSec=
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Specifies the maximum time a system shutdown or sleep request is
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delayed due to an inhibitor lock of type "delay" being active
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before the inhibitor is ignored and the operation executes anyway.
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Defaults to 5.
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HandlePowerKey=, HandleSuspendKey=, HandleHibernateKey=,
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HandleLidSwitch=, HandleLidSwitchExternalPower=, HandleLidSwitchDocked=
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Controls how logind shall handle the system power and sleep keys
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and the lid switch to trigger actions such as system power-off or
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suspend. Can be one of "ignore", "poweroff", "reboot", "halt",
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"kexec", "suspend", "hibernate", "hybrid-sleep", and "lock". If
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"ignore", logind will never handle these keys. If "lock", all
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running sessions will be screen-locked; otherwise, the specified
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action will be taken in the respective event. Only input devices
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with the "power-switch" udev tag will be watched for key/lid switch
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events. HandlePowerKey= defaults to "poweroff". HandleSuspendKey=
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and HandleLidSwitch= default to "suspend".
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HandleLidSwitchExternalPower= is completely ignored by default (for
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backwards compatibility) — an explicit value must be set before it
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will be used to determine behaviour. HandleLidSwitchDocked=
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defaults to "ignore". HandleHibernateKey= defaults to "hibernate".
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If the system is inserted in a docking station, or if more than one
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display is connected, the action specified by
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HandleLidSwitchDocked= occurs; if the system is on external power
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the action (if any) specified by HandleLidSwitchExternalPower=
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occurs; otherwise the HandleLidSwitch= action occurs.
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A different application may disable logind's handling of system
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power and sleep keys and the lid switch by taking a low-level
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inhibitor lock ("handle-power-key", "handle-suspend-key",
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"handle-hibernate-key", "handle-lid-switch"). This is most commonly
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used by graphical desktop environments to take over suspend and
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hibernation handling, and to use their own configuration
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mechanisms. If a low-level inhibitor lock is taken, logind will not
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take any action when that key or switch is triggered and the
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Handle*= settings are irrelevant.
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PowerKeyIgnoreInhibited=, SuspendKeyIgnoreInhibited=,
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HibernateKeyIgnoreInhibited=, LidSwitchIgnoreInhibited=
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Controls whether actions that systemd-logind takes when the power
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and sleep keys and the lid switch are triggered are subject to
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high-level inhibitor locks ("shutdown", "sleep", "idle"). Low level
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inhibitor locks ("handle-power-key", "handle-suspend-key",
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"handle-hibernate-key", "handle-lid-switch"), are always honored,
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irrespective of this setting.
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These settings take boolean arguments. If "no", the inhibitor locks
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taken by applications are respected. If "yes", "shutdown", "sleep",
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and "idle" inhibitor locks are ignored. PowerKeyIgnoreInhibited=,
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SuspendKeyIgnoreInhibited=, and HibernateKeyIgnoreInhibited=
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default to "no". LidSwitchIgnoreInhibited= defaults to "yes". This
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means that when systemd-logind is handling events by itself (no low
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level inhibitor locks are taken by another application), the lid
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switch does not respect suspend blockers by default, but the power
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and sleep keys do.
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HoldoffTimeoutSec=
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Specifies the timeout after system startup or system resume in
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which systemd will hold off on reacting to lid events. This is
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required for the system to properly detect any hotplugged devices
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so systemd can ignore lid events if external monitors, or docks,
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are connected. If set to 0, systemd will always react immediately,
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possibly before the kernel fully probed all hotplugged devices.
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This is safe, as long as you do not care for systemd to account for
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devices that have been plugged or unplugged while the system was
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off. Defaults to 30s.
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RuntimeDirectorySize=
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Sets the size limit on the $XDG_RUNTIME_DIR runtime directory for
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each user who logs in. Takes a size in bytes, optionally suffixed
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with the usual K, G, M, and T suffixes, to the base 1024 (IEC).
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Alternatively, a numerical percentage suffixed by "%" may be
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specified, which sets the size limit relative to the amount of
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physical RAM. Defaults to 10%. Note that this size is a safety
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limit only. As each runtime directory is a tmpfs file system, it
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will only consume as much memory as is needed.
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InhibitorsMax=
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Controls the maximum number of concurrent inhibitors to permit.
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Defaults to 8192 (8K).
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SessionsMax=
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Controls the maximum number of concurrent user sessions to manage.
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Defaults to 8192 (8K). Depending on how the pam_systemd.so module
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is included in the PAM stack configuration, further login sessions
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will either be refused, or permitted but not tracked by
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systemd-logind.
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UserTasksMax=
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Sets the maximum number of OS tasks each user may run concurrently.
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This controls the TasksMax= setting of the per-user slice unit, see
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systemd.resource-control(5) for details. If assigned the special
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value "infinity", no tasks limit is applied. Defaults to 33%, which
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equals 10813 with the kernel's defaults on the host, but might be
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smaller in OS containers.
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RemoveIPC=
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Controls whether System V and POSIX IPC objects belonging to the
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user shall be removed when the user fully logs out. Takes a boolean
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argument. If enabled, the user may not consume IPC resources after
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the last of the user's sessions terminated. This covers System V
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semaphores, shared memory and message queues, as well as POSIX
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shared memory and message queues. Note that IPC objects of the root
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user and other system users are excluded from the effect of this
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setting. Defaults to "yes".
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SEE ALSO
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systemd(1), systemd-logind.service(8), loginctl(1), systemd-
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system.conf(5)
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systemd 238 LOGIND.CONF(5)
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@ -229,6 +229,8 @@ post_makeinstall_target() {
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rm -rf $INSTALL/etc/modules-load.d
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rm -rf $INSTALL/etc/modules-load.d
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ln -sf /storage/.config/modules-load.d $INSTALL/etc/modules-load.d
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ln -sf /storage/.config/modules-load.d $INSTALL/etc/modules-load.d
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rm -rf $INSTALL/etc/systemd/logind.conf.d
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ln -sf /storage/.config/logind.conf.d $INSTALL/etc/systemd/logind.conf.d
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rm -rf $INSTALL/etc/systemd/sleep.conf.d
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rm -rf $INSTALL/etc/systemd/sleep.conf.d
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ln -sf /storage/.config/sleep.conf.d $INSTALL/etc/systemd/sleep.conf.d
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ln -sf /storage/.config/sleep.conf.d $INSTALL/etc/systemd/sleep.conf.d
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rm -rf $INSTALL/etc/sysctl.d
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rm -rf $INSTALL/etc/sysctl.d
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