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Merge pull request #164016 from bobvanderlinden/pr-refactor-systemd-module

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nixos: systemd: split module up into multiple files
This commit is contained in:
Florian Klink 2022-03-21 13:03:55 +01:00 committed by GitHub
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8 changed files with 572 additions and 447 deletions
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7
nixos/modules/module-list.nix
View File

@ -1168,7 +1168,12 @@
./system/boot/stage-1.nix
./system/boot/stage-2.nix
./system/boot/systemd.nix
./system/boot/systemd-nspawn.nix
./system/boot/systemd/coredump.nix
./system/boot/systemd/journald.nix
./system/boot/systemd/logind.nix
./system/boot/systemd/nspawn.nix
./system/boot/systemd/tmpfiles.nix
./system/boot/systemd/user.nix
./system/boot/timesyncd.nix
./system/boot/tmp.nix
./system/etc/etc-activation.nix

448
nixos/modules/system/boot/systemd.nix
View File

@ -2,7 +2,6 @@
with utils;
with systemdUtils.unitOptions;
with systemdUtils.lib;
with lib;
let
@ -12,6 +11,8 @@ let
systemd = cfg.package;
inherit (systemdUtils.lib)
makeUnit
generateUnits
makeJobScript
unitConfig
serviceConfig
@ -79,32 +80,6 @@ let
"printer.target"
"smartcard.target"
# Login stuff.
"systemd-logind.service"
"autovt@.service"
"systemd-user-sessions.service"
"dbus-org.freedesktop.import1.service"
"dbus-org.freedesktop.machine1.service"
"dbus-org.freedesktop.login1.service"
"user@.service"
"user-runtime-dir@.service"
# Journal.
"systemd-journald.socket"
"systemd-journald@.socket"
"systemd-journald-varlink@.socket"
"systemd-journald.service"
"systemd-journald@.service"
"systemd-journal-flush.service"
"systemd-journal-catalog-update.service"
] ++ (optional (!config.boot.isContainer) "systemd-journald-audit.socket") ++ [
"systemd-journald-dev-log.socket"
"syslog.socket"
# Coredumps.
"systemd-coredump.socket"
"systemd-coredump@.service"
# Kernel module loading.
"systemd-modules-load.service"
"kmod-static-nodes.service"
@ -165,19 +140,12 @@ let
# Slices / containers.
"slices.target"
"user.slice"
"machine.slice"
"machines.target"
"systemd-importd.service"
"systemd-machined.service"
"systemd-nspawn@.service"
# Temporary file creation / cleanup.
"systemd-tmpfiles-clean.service"
"systemd-tmpfiles-clean.timer"
"systemd-tmpfiles-setup.service"
"systemd-tmpfiles-setup-dev.service"
# Misc.
"systemd-sysctl.service"
"dbus-org.freedesktop.timedate1.service"
@ -188,9 +156,6 @@ let
"systemd-hostnamed.service"
"systemd-exit.service"
"systemd-update-done.service"
] ++ optionals config.services.journald.enableHttpGateway [
"systemd-journal-gatewayd.socket"
"systemd-journal-gatewayd.service"
] ++ cfg.additionalUpstreamSystemUnits;
upstreamSystemWants =
@ -201,36 +166,6 @@ let
"timers.target.wants"
];
upstreamUserUnits = [
"app.slice"
"background.slice"
"basic.target"
"bluetooth.target"
"default.target"
"exit.target"
"graphical-session-pre.target"
"graphical-session.target"
"paths.target"
"printer.target"
"session.slice"
"shutdown.target"
"smartcard.target"
"sockets.target"
"sound.target"
"systemd-exit.service"
"systemd-tmpfiles-clean.service"
"systemd-tmpfiles-clean.timer"
"systemd-tmpfiles-setup.service"
"timers.target"
"xdg-desktop-autostart.target"
];
logindHandlerType = types.enum [
"ignore" "poweroff" "reboot" "halt" "kexec" "suspend"
"hibernate" "hybrid-sleep" "suspend-then-hibernate" "lock"
];
proxy_env = config.networking.proxy.envVars;
in
@ -383,26 +318,6 @@ in
'';
};
systemd.coredump.enable = mkOption {
default = true;
type = types.bool;
description = ''
Whether core dumps should be processed by
<command>systemd-coredump</command>. If disabled, core dumps
appear in the current directory of the crashing process.
'';
};
systemd.coredump.extraConfig = mkOption {
default = "";
type = types.lines;
example = "Storage=journal";
description = ''
Extra config options for systemd-coredump. See coredump.conf(5) man page
for available options.
'';
};
systemd.extraConfig = mkOption {
default = "";
type = types.lines;
@ -413,142 +328,6 @@ in
'';
};
services.journald.console = mkOption {
default = "";
type = types.str;
description = "If non-empty, write log messages to the specified TTY device.";
};
services.journald.rateLimitInterval = mkOption {
default = "30s";
type = types.str;
description = ''
Configures the rate limiting interval that is applied to all
messages generated on the system. This rate limiting is applied
per-service, so that two services which log do not interfere with
each other's limit. The value may be specified in the following
units: s, min, h, ms, us. To turn off any kind of rate limiting,
set either value to 0.
See <option>services.journald.rateLimitBurst</option> for important
considerations when setting this value.
'';
};
services.journald.rateLimitBurst = mkOption {
default = 10000;
type = types.int;
description = ''
Configures the rate limiting burst limit (number of messages per
interval) that is applied to all messages generated on the system.
This rate limiting is applied per-service, so that two services
which log do not interfere with each other's limit.
Note that the effective rate limit is multiplied by a factor derived
from the available free disk space for the journal as described on
<link xlink:href="https://www.freedesktop.org/software/systemd/man/journald.conf.html">
journald.conf(5)</link>.
Note that the total amount of logs stored is limited by journald settings
such as <literal>SystemMaxUse</literal>, which defaults to a 4 GB cap.
It is thus recommended to compute what period of time that you will be
able to store logs for when an application logs at full burst rate.
With default settings for log lines that are 100 Bytes long, this can
amount to just a few hours.
'';
};
services.journald.extraConfig = mkOption {
default = "";
type = types.lines;
example = "Storage=volatile";
description = ''
Extra config options for systemd-journald. See man journald.conf
for available options.
'';
};
services.journald.enableHttpGateway = mkOption {
default = false;
type = types.bool;
description = ''
Whether to enable the HTTP gateway to the journal.
'';
};
services.journald.forwardToSyslog = mkOption {
default = config.services.rsyslogd.enable || config.services.syslog-ng.enable;
defaultText = literalExpression "services.rsyslogd.enable || services.syslog-ng.enable";
type = types.bool;
description = ''
Whether to forward log messages to syslog.
'';
};
services.logind.extraConfig = mkOption {
default = "";
type = types.lines;
example = "IdleAction=lock";
description = ''
Extra config options for systemd-logind. See
<link xlink:href="https://www.freedesktop.org/software/systemd/man/logind.conf.html">
logind.conf(5)</link> for available options.
'';
};
services.logind.killUserProcesses = mkOption {
default = false;
type = types.bool;
description = ''
Specifies whether the processes of a user should be killed
when the user logs out. If true, the scope unit corresponding
to the session and all processes inside that scope will be
terminated. If false, the scope is "abandoned" (see
<link xlink:href="https://www.freedesktop.org/software/systemd/man/systemd.scope.html#">
systemd.scope(5)</link>), and processes are not killed.
</para>
<para>
See <link xlink:href="https://www.freedesktop.org/software/systemd/man/logind.conf.html#KillUserProcesses=">logind.conf(5)</link>
for more details.
'';
};
services.logind.lidSwitch = mkOption {
default = "suspend";
example = "ignore";
type = logindHandlerType;
description = ''
Specifies what to be done when the laptop lid is closed.
'';
};
services.logind.lidSwitchDocked = mkOption {
default = "ignore";
example = "suspend";
type = logindHandlerType;
description = ''
Specifies what to be done when the laptop lid is closed
and another screen is added.
'';
};
services.logind.lidSwitchExternalPower = mkOption {
default = config.services.logind.lidSwitch;
defaultText = literalExpression "services.logind.lidSwitch";
example = "ignore";
type = logindHandlerType;
description = ''
Specifies what to do when the laptop lid is closed and the system is
on external power. By default use the same action as specified in
services.logind.lidSwitch.
'';
};
systemd.sleep.extraConfig = mkOption {
default = "";
type = types.lines;
@ -559,95 +338,6 @@ in
'';
};
systemd.user.extraConfig = mkOption {
default = "";
type = types.lines;
example = "DefaultCPUAccounting=yes";
description = ''
Extra config options for systemd user instances. See man systemd-user.conf for
available options.
'';
};
systemd.tmpfiles.rules = mkOption {
type = types.listOf types.str;
default = [];
example = [ "d /tmp 1777 root root 10d" ];
description = ''
Rules for creation, deletion and cleaning of volatile and temporary files
automatically. See
<citerefentry><refentrytitle>tmpfiles.d</refentrytitle><manvolnum>5</manvolnum></citerefentry>
for the exact format.
'';
};
systemd.tmpfiles.packages = mkOption {
type = types.listOf types.package;
default = [];
example = literalExpression "[ pkgs.lvm2 ]";
apply = map getLib;
description = ''
List of packages containing <command>systemd-tmpfiles</command> rules.
All files ending in .conf found in
<filename><replaceable>pkg</replaceable>/lib/tmpfiles.d</filename>
will be included.
If this folder does not exist or does not contain any files an error will be returned instead.
If a <filename>lib</filename> output is available, rules are searched there and only there.
If there is no <filename>lib</filename> output it will fall back to <filename>out</filename>
and if that does not exist either, the default output will be used.
'';
};
systemd.user.units = mkOption {
description = "Definition of systemd per-user units.";
default = {};
type = with types; attrsOf (submodule (
{ name, config, ... }:
{ options = concreteUnitOptions;
config = {
unit = mkDefault (makeUnit name config);
};
}));
};
systemd.user.paths = mkOption {
default = {};
type = with types; attrsOf (submodule [ { options = pathOptions; } unitConfig ]);
description = "Definition of systemd per-user path units.";
};
systemd.user.services = mkOption {
default = {};
type = with types; attrsOf (submodule [ { options = serviceOptions; } unitConfig serviceConfig ] );
description = "Definition of systemd per-user service units.";
};
systemd.user.slices = mkOption {
default = {};
type = with types; attrsOf (submodule [ { options = sliceOptions; } unitConfig ] );
description = "Definition of systemd per-user slice units.";
};
systemd.user.sockets = mkOption {
default = {};
type = with types; attrsOf (submodule [ { options = socketOptions; } unitConfig ] );
description = "Definition of systemd per-user socket units.";
};
systemd.user.targets = mkOption {
default = {};
type = with types; attrsOf (submodule [ { options = targetOptions; } unitConfig] );
description = "Definition of systemd per-user target units.";
};
systemd.user.timers = mkOption {
default = {};
type = with types; attrsOf (submodule [ { options = timerOptions; } unitConfig ] );
description = "Definition of systemd per-user timer units.";
};
systemd.additionalUpstreamSystemUnits = mkOption {
default = [ ];
type = types.listOf types.str;
@ -783,8 +473,6 @@ in
in ({
"systemd/system".source = generateUnits "system" enabledUnits enabledUpstreamSystemUnits upstreamSystemWants;
"systemd/user".source = generateUnits "user" cfg.user.units upstreamUserUnits [];
"systemd/system.conf".text = ''
[Manager]
${optionalString config.systemd.enableCgroupAccounting ''
@ -810,76 +498,17 @@ in
${config.systemd.extraConfig}
'';
"systemd/user.conf".text = ''
[Manager]
${config.systemd.user.extraConfig}
'';
"systemd/journald.conf".text = ''
[Journal]
Storage=persistent
RateLimitInterval=${config.services.journald.rateLimitInterval}
RateLimitBurst=${toString config.services.journald.rateLimitBurst}
${optionalString (config.services.journald.console != "") ''
ForwardToConsole=yes
TTYPath=${config.services.journald.console}
''}
${optionalString (config.services.journald.forwardToSyslog) ''
ForwardToSyslog=yes
''}
${config.services.journald.extraConfig}
'';
"systemd/coredump.conf".text =
''
[Coredump]
${config.systemd.coredump.extraConfig}
'';
"systemd/logind.conf".text = ''
[Login]
KillUserProcesses=${if config.services.logind.killUserProcesses then "yes" else "no"}
HandleLidSwitch=${config.services.logind.lidSwitch}
HandleLidSwitchDocked=${config.services.logind.lidSwitchDocked}
HandleLidSwitchExternalPower=${config.services.logind.lidSwitchExternalPower}
${config.services.logind.extraConfig}
'';
"systemd/sleep.conf".text = ''
[Sleep]
${config.systemd.sleep.extraConfig}
'';
# install provided sysctl snippets
"sysctl.d/50-coredump.conf".source = "${systemd}/example/sysctl.d/50-coredump.conf";
"sysctl.d/50-default.conf".source = "${systemd}/example/sysctl.d/50-default.conf";
"tmpfiles.d".source = (pkgs.symlinkJoin {
name = "tmpfiles.d";
paths = map (p: p + "/lib/tmpfiles.d") cfg.tmpfiles.packages;
postBuild = ''
for i in $(cat $pathsPath); do
(test -d "$i" && test $(ls "$i"/*.conf | wc -l) -ge 1) || (
echo "ERROR: The path '$i' from systemd.tmpfiles.packages contains no *.conf files."
exit 1
)
done
'' + concatMapStrings (name: optionalString (hasPrefix "tmpfiles.d/" name) ''
rm -f $out/${removePrefix "tmpfiles.d/" name}
'') config.system.build.etc.passthru.targets;
}) + "/*";
"systemd/system-generators" = { source = hooks "generators" cfg.generators; };
"systemd/system-shutdown" = { source = hooks "shutdown" cfg.shutdown; };
});
services.dbus.enable = true;
users.users.systemd-coredump = {
uid = config.ids.uids.systemd-coredump;
group = "systemd-coredump";
};
users.groups.systemd-coredump = {};
users.users.systemd-network = {
uid = config.ids.uids.systemd-network;
group = "systemd-network";
@ -899,36 +528,6 @@ in
unitConfig.X-StopOnReconfiguration = true;
};
systemd.tmpfiles.packages = [
# Default tmpfiles rules provided by systemd
(pkgs.runCommand "systemd-default-tmpfiles" {} ''
mkdir -p $out/lib/tmpfiles.d
cd $out/lib/tmpfiles.d
ln -s "${systemd}/example/tmpfiles.d/home.conf"
ln -s "${systemd}/example/tmpfiles.d/journal-nocow.conf"
ln -s "${systemd}/example/tmpfiles.d/static-nodes-permissions.conf"
ln -s "${systemd}/example/tmpfiles.d/systemd.conf"
ln -s "${systemd}/example/tmpfiles.d/systemd-nologin.conf"
ln -s "${systemd}/example/tmpfiles.d/systemd-nspawn.conf"
ln -s "${systemd}/example/tmpfiles.d/systemd-tmp.conf"
ln -s "${systemd}/example/tmpfiles.d/tmp.conf"
ln -s "${systemd}/example/tmpfiles.d/var.conf"
ln -s "${systemd}/example/tmpfiles.d/x11.conf"
'')
# User-specified tmpfiles rules
(pkgs.writeTextFile {
name = "nixos-tmpfiles.d";
destination = "/lib/tmpfiles.d/00-nixos.conf";
text = ''
# This file is created automatically and should not be modified.
# Please change the option ‘systemd.tmpfiles.rules’ instead.
${concatStringsSep "\n" cfg.tmpfiles.rules}
'';
})
];
systemd.units =
mapAttrs' (n: v: nameValuePair "${n}.path" (pathToUnit n v)) cfg.paths
// mapAttrs' (n: v: nameValuePair "${n}.service" (serviceToUnit n v)) cfg.services
@ -943,14 +542,6 @@ in
(v: let n = escapeSystemdPath v.where;
in nameValuePair "${n}.automount" (automountToUnit n v)) cfg.automounts);
systemd.user.units =
mapAttrs' (n: v: nameValuePair "${n}.path" (pathToUnit n v)) cfg.user.paths
// mapAttrs' (n: v: nameValuePair "${n}.service" (serviceToUnit n v)) cfg.user.services
// mapAttrs' (n: v: nameValuePair "${n}.slice" (sliceToUnit n v)) cfg.user.slices
// mapAttrs' (n: v: nameValuePair "${n}.socket" (socketToUnit n v)) cfg.user.sockets
// mapAttrs' (n: v: nameValuePair "${n}.target" (targetToUnit n v)) cfg.user.targets
// mapAttrs' (n: v: nameValuePair "${n}.timer" (timerToUnit n v)) cfg.user.timers;
system.requiredKernelConfig = map config.lib.kernelConfig.isEnabled
[ "DEVTMPFS" "CGROUPS" "INOTIFY_USER" "SIGNALFD" "TIMERFD" "EPOLL" "NET"
"SYSFS" "PROC_FS" "FHANDLE" "CRYPTO_USER_API_HASH" "CRYPTO_HMAC"
@ -958,11 +549,6 @@ in
"TMPFS_XATTR" "SECCOMP"
];
users.groups.systemd-journal.gid = config.ids.gids.systemd-journal;
users.users.systemd-journal-gateway.uid = config.ids.uids.systemd-journal-gateway;
users.users.systemd-journal-gateway.group = "systemd-journal-gateway";
users.groups.systemd-journal-gateway.gid = config.ids.gids.systemd-journal-gateway;
# Generate timer units for all services that have a ‘startAt’ value.
systemd.timers =
mapAttrs (name: service:
@ -979,42 +565,14 @@ in
})
(filterAttrs (name: service: service.startAt != []) cfg.user.services);
systemd.sockets.systemd-journal-gatewayd.wantedBy =
optional config.services.journald.enableHttpGateway "sockets.target";
# Provide the systemd-user PAM service, required to run systemd
# user instances.
security.pam.services.systemd-user =
{ # Ensure that pam_systemd gets included. This is special-cased
# in systemd to provide XDG_RUNTIME_DIR.
startSession = true;
};
# Some overrides to upstream units.
systemd.services."systemd-backlight@".restartIfChanged = false;
systemd.services."systemd-fsck@".restartIfChanged = false;
systemd.services."systemd-fsck@".path = [ config.system.path ];
systemd.services."user@".restartIfChanged = false;
systemd.services.systemd-journal-flush.restartIfChanged = false;
systemd.services.systemd-random-seed.restartIfChanged = false;
systemd.services.systemd-remount-fs.restartIfChanged = false;
systemd.services.systemd-update-utmp.restartIfChanged = false;
systemd.services.systemd-user-sessions.restartIfChanged = false; # Restart kills all active sessions.
systemd.services.systemd-udev-settle.restartIfChanged = false; # Causes long delays in nixos-rebuild
# Restarting systemd-logind breaks X11
# - upstream commit: https://cgit.freedesktop.org/xorg/xserver/commit/?id=dc48bd653c7e101
# - systemd announcement: https://github.com/systemd/systemd/blob/22043e4317ecd2bc7834b48a6d364de76bb26d91/NEWS#L103-L112
# - this might be addressed in the future by xorg
#systemd.services.systemd-logind.restartTriggers = [ config.environment.etc."systemd/logind.conf".source ];
systemd.services.systemd-logind.restartIfChanged = false;
systemd.services.systemd-logind.stopIfChanged = false;
# The user-runtime-dir@ service is managed by systemd-logind we should not touch it or else we break the users' sessions.
systemd.services."user-runtime-dir@".stopIfChanged = false;
systemd.services."user-runtime-dir@".restartIfChanged = false;
systemd.services.systemd-journald.restartTriggers = [ config.environment.etc."systemd/journald.conf".source ];
systemd.services.systemd-journald.stopIfChanged = false;
systemd.services."systemd-journald@".restartTriggers = [ config.environment.etc."systemd/journald.conf".source ];
systemd.services."systemd-journald@".stopIfChanged = false;
systemd.targets.local-fs.unitConfig.X-StopOnReconfiguration = true;
systemd.targets.remote-fs.unitConfig.X-StopOnReconfiguration = true;
systemd.targets.network-online.wantedBy = [ "multi-user.target" ];
@ -1025,8 +583,6 @@ in
systemd.services.systemd-remount-fs.unitConfig.ConditionVirtualization = "!container";
systemd.services.systemd-random-seed.unitConfig.ConditionVirtualization = "!container";
boot.kernel.sysctl."kernel.core_pattern" = mkIf (!cfg.coredump.enable) "core";
# Increase numeric PID range (set directly instead of copying a one-line file from systemd)
# https://github.com/systemd/systemd/pull/12226
boot.kernel.sysctl."kernel.pid_max" = mkIf pkgs.stdenv.is64bit (lib.mkDefault 4194304);

57
nixos/modules/system/boot/systemd/coredump.nix Normal file
View File

@ -0,0 +1,57 @@
{ config, lib, pkgs, utils, ... }:
with lib;
let
cfg = config.systemd.coredump;
systemd = config.systemd.package;
in {
options = {
systemd.coredump.enable = mkOption {
default = true;
type = types.bool;
description = ''
Whether core dumps should be processed by
<command>systemd-coredump</command>. If disabled, core dumps
appear in the current directory of the crashing process.
'';
};
systemd.coredump.extraConfig = mkOption {
default = "";
type = types.lines;
example = "Storage=journal";
description = ''
Extra config options for systemd-coredump. See coredump.conf(5) man page
for available options.
'';
};
};
config = {
systemd.additionalUpstreamSystemUnits = [
"systemd-coredump.socket"
"systemd-coredump@.service"
];
environment.etc = {
"systemd/coredump.conf".text =
''
[Coredump]
${cfg.extraConfig}
'';
# install provided sysctl snippets
"sysctl.d/50-coredump.conf".source = "${systemd}/example/sysctl.d/50-coredump.conf";
"sysctl.d/50-default.conf".source = "${systemd}/example/sysctl.d/50-default.conf";
};
users.users.systemd-coredump = {
uid = config.ids.uids.systemd-coredump;
group = "systemd-coredump";
};
users.groups.systemd-coredump = {};
boot.kernel.sysctl."kernel.core_pattern" = mkIf (!cfg.enable) "core";
};
}

131
nixos/modules/system/boot/systemd/journald.nix Normal file
View File

@ -0,0 +1,131 @@
{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.journald;
in {
options = {
services.journald.console = mkOption {
default = "";
type = types.str;
description = "If non-empty, write log messages to the specified TTY device.";
};
services.journald.rateLimitInterval = mkOption {
default = "30s";
type = types.str;
description = ''
Configures the rate limiting interval that is applied to all
messages generated on the system. This rate limiting is applied
per-service, so that two services which log do not interfere with
each other's limit. The value may be specified in the following
units: s, min, h, ms, us. To turn off any kind of rate limiting,
set either value to 0.
See <option>services.journald.rateLimitBurst</option> for important
considerations when setting this value.
'';
};
services.journald.rateLimitBurst = mkOption {
default = 10000;
type = types.int;
description = ''
Configures the rate limiting burst limit (number of messages per
interval) that is applied to all messages generated on the system.
This rate limiting is applied per-service, so that two services
which log do not interfere with each other's limit.
Note that the effective rate limit is multiplied by a factor derived
from the available free disk space for the journal as described on
<link xlink:href="https://www.freedesktop.org/software/systemd/man/journald.conf.html">
journald.conf(5)</link>.
Note that the total amount of logs stored is limited by journald settings
such as <literal>SystemMaxUse</literal>, which defaults to a 4 GB cap.
It is thus recommended to compute what period of time that you will be
able to store logs for when an application logs at full burst rate.
With default settings for log lines that are 100 Bytes long, this can
amount to just a few hours.
'';
};
services.journald.extraConfig = mkOption {
default = "";
type = types.lines;
example = "Storage=volatile";
description = ''
Extra config options for systemd-journald. See man journald.conf
for available options.
'';
};
services.journald.enableHttpGateway = mkOption {
default = false;
type = types.bool;
description = ''
Whether to enable the HTTP gateway to the journal.
'';
};
services.journald.forwardToSyslog = mkOption {
default = config.services.rsyslogd.enable || config.services.syslog-ng.enable;
defaultText = literalExpression "services.rsyslogd.enable || services.syslog-ng.enable";
type = types.bool;
description = ''
Whether to forward log messages to syslog.
'';
};
};
config = {
systemd.additionalUpstreamSystemUnits = [
"systemd-journald.socket"
"systemd-journald@.socket"
"systemd-journald-varlink@.socket"
"systemd-journald.service"
"systemd-journald@.service"
"systemd-journal-flush.service"
"systemd-journal-catalog-update.service"
] ++ (optional (!config.boot.isContainer) "systemd-journald-audit.socket") ++ [
"systemd-journald-dev-log.socket"
"syslog.socket"
] ++ optionals cfg.enableHttpGateway [
"systemd-journal-gatewayd.socket"
"systemd-journal-gatewayd.service"
];
environment.etc = {
"systemd/journald.conf".text = ''
[Journal]
Storage=persistent
RateLimitInterval=${cfg.rateLimitInterval}
RateLimitBurst=${toString cfg.rateLimitBurst}
${optionalString (cfg.console != "") ''
ForwardToConsole=yes
TTYPath=${cfg.console}
''}
${optionalString (cfg.forwardToSyslog) ''
ForwardToSyslog=yes
''}
${cfg.extraConfig}
'';
};
users.groups.systemd-journal.gid = config.ids.gids.systemd-journal;
users.users.systemd-journal-gateway.uid = config.ids.uids.systemd-journal-gateway;
users.users.systemd-journal-gateway.group = "systemd-journal-gateway";
users.groups.systemd-journal-gateway.gid = config.ids.gids.systemd-journal-gateway;
systemd.sockets.systemd-journal-gatewayd.wantedBy =
optional cfg.enableHttpGateway "sockets.target";
systemd.services.systemd-journal-flush.restartIfChanged = false;
systemd.services.systemd-journald.restartTriggers = [ config.environment.etc."systemd/journald.conf".source ];
systemd.services.systemd-journald.stopIfChanged = false;
systemd.services."systemd-journald@".restartTriggers = [ config.environment.etc."systemd/journald.conf".source ];
systemd.services."systemd-journald@".stopIfChanged = false;
};
}

114
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{ config, lib, pkgs, utils, ... }:
with lib;
let
cfg = config.services.logind;
logindHandlerType = types.enum [
"ignore" "poweroff" "reboot" "halt" "kexec" "suspend"
"hibernate" "hybrid-sleep" "suspend-then-hibernate" "lock"
];
in
{
options = {
services.logind.extraConfig = mkOption {
default = "";
type = types.lines;
example = "IdleAction=lock";
description = ''
Extra config options for systemd-logind. See
<link xlink:href="https://www.freedesktop.org/software/systemd/man/logind.conf.html">
logind.conf(5)</link> for available options.
'';
};
services.logind.killUserProcesses = mkOption {
default = false;
type = types.bool;
description = ''
Specifies whether the processes of a user should be killed
when the user logs out. If true, the scope unit corresponding
to the session and all processes inside that scope will be
terminated. If false, the scope is "abandoned" (see
<link xlink:href="https://www.freedesktop.org/software/systemd/man/systemd.scope.html#">
systemd.scope(5)</link>), and processes are not killed.
</para>
<para>
See <link xlink:href="https://www.freedesktop.org/software/systemd/man/logind.conf.html#KillUserProcesses=">logind.conf(5)</link>
for more details.
'';
};
services.logind.lidSwitch = mkOption {
default = "suspend";
example = "ignore";
type = logindHandlerType;
description = ''
Specifies what to be done when the laptop lid is closed.
'';
};
services.logind.lidSwitchDocked = mkOption {
default = "ignore";
example = "suspend";
type = logindHandlerType;
description = ''
Specifies what to be done when the laptop lid is closed
and another screen is added.
'';
};
services.logind.lidSwitchExternalPower = mkOption {
default = cfg.lidSwitch;
defaultText = literalExpression "services.logind.lidSwitch";
example = "ignore";
type = logindHandlerType;
description = ''
Specifies what to do when the laptop lid is closed and the system is
on external power. By default use the same action as specified in
services.logind.lidSwitch.
'';
};
};
config = {
systemd.additionalUpstreamSystemUnits = [
"systemd-logind.service"
"autovt@.service"
"systemd-user-sessions.service"
"dbus-org.freedesktop.import1.service"
"dbus-org.freedesktop.machine1.service"
"dbus-org.freedesktop.login1.service"
"user@.service"
"user-runtime-dir@.service"
];
environment.etc = {
"systemd/logind.conf".text = ''
[Login]
KillUserProcesses=${if cfg.killUserProcesses then "yes" else "no"}
HandleLidSwitch=${cfg.lidSwitch}
HandleLidSwitchDocked=${cfg.lidSwitchDocked}
HandleLidSwitchExternalPower=${cfg.lidSwitchExternalPower}
${cfg.extraConfig}
'';
};
# Restarting systemd-logind breaks X11
# - upstream commit: https://cgit.freedesktop.org/xorg/xserver/commit/?id=dc48bd653c7e101
# - systemd announcement: https://github.com/systemd/systemd/blob/22043e4317ecd2bc7834b48a6d364de76bb26d91/NEWS#L103-L112
# - this might be addressed in the future by xorg
#systemd.services.systemd-logind.restartTriggers = [ config.environment.etc."systemd/logind.conf".source ];
systemd.services.systemd-logind.restartIfChanged = false;
systemd.services.systemd-logind.stopIfChanged = false;
# The user-runtime-dir@ service is managed by systemd-logind we should not touch it or else we break the users' sessions.
systemd.services."user-runtime-dir@".stopIfChanged = false;
systemd.services."user-runtime-dir@".restartIfChanged = false;
};
}

0
nixos/modules/system/boot/systemd-nspawn.nix → nixos/modules/system/boot/systemd/nspawn.nix
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104
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{ config, lib, pkgs, utils, ... }:
with lib;
let
cfg = config.systemd.tmpfiles;
systemd = config.systemd.package;
in
{
options = {
systemd.tmpfiles.rules = mkOption {
type = types.listOf types.str;
default = [];
example = [ "d /tmp 1777 root root 10d" ];
description = ''
Rules for creation, deletion and cleaning of volatile and temporary files
automatically. See
<citerefentry><refentrytitle>tmpfiles.d</refentrytitle><manvolnum>5</manvolnum></citerefentry>
for the exact format.
'';
};
systemd.tmpfiles.packages = mkOption {
type = types.listOf types.package;
default = [];
example = literalExpression "[ pkgs.lvm2 ]";
apply = map getLib;
description = ''
List of packages containing <command>systemd-tmpfiles</command> rules.
All files ending in .conf found in
<filename><replaceable>pkg</replaceable>/lib/tmpfiles.d</filename>
will be included.
If this folder does not exist or does not contain any files an error will be returned instead.
If a <filename>lib</filename> output is available, rules are searched there and only there.
If there is no <filename>lib</filename> output it will fall back to <filename>out</filename>
and if that does not exist either, the default output will be used.
'';
};
};
config = {
systemd.additionalUpstreamSystemUnits = [
"systemd-tmpfiles-clean.service"
"systemd-tmpfiles-clean.timer"
"systemd-tmpfiles-setup.service"
"systemd-tmpfiles-setup-dev.service"
];
systemd.additionalUpstreamUserUnits = [
"systemd-tmpfiles-clean.service"
"systemd-tmpfiles-clean.timer"
"systemd-tmpfiles-setup.service"
];
environment.etc = {
"tmpfiles.d".source = (pkgs.symlinkJoin {
name = "tmpfiles.d";
paths = map (p: p + "/lib/tmpfiles.d") cfg.packages;
postBuild = ''
for i in $(cat $pathsPath); do
(test -d "$i" && test $(ls "$i"/*.conf | wc -l) -ge 1) || (
echo "ERROR: The path '$i' from systemd.tmpfiles.packages contains no *.conf files."
exit 1
)
done
'' + concatMapStrings (name: optionalString (hasPrefix "tmpfiles.d/" name) ''
rm -f $out/${removePrefix "tmpfiles.d/" name}
'') config.system.build.etc.passthru.targets;
}) + "/*";
};
systemd.tmpfiles.packages = [
# Default tmpfiles rules provided by systemd
(pkgs.runCommand "systemd-default-tmpfiles" {} ''
mkdir -p $out/lib/tmpfiles.d
cd $out/lib/tmpfiles.d
ln -s "${systemd}/example/tmpfiles.d/home.conf"
ln -s "${systemd}/example/tmpfiles.d/journal-nocow.conf"
ln -s "${systemd}/example/tmpfiles.d/static-nodes-permissions.conf"
ln -s "${systemd}/example/tmpfiles.d/systemd.conf"
ln -s "${systemd}/example/tmpfiles.d/systemd-nologin.conf"
ln -s "${systemd}/example/tmpfiles.d/systemd-nspawn.conf"
ln -s "${systemd}/example/tmpfiles.d/systemd-tmp.conf"
ln -s "${systemd}/example/tmpfiles.d/tmp.conf"
ln -s "${systemd}/example/tmpfiles.d/var.conf"
ln -s "${systemd}/example/tmpfiles.d/x11.conf"
'')
# User-specified tmpfiles rules
(pkgs.writeTextFile {
name = "nixos-tmpfiles.d";
destination = "/lib/tmpfiles.d/00-nixos.conf";
text = ''
# This file is created automatically and should not be modified.
# Please change the option ‘systemd.tmpfiles.rules’ instead.
${concatStringsSep "\n" cfg.rules}
'';
})
];
};
}

158
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{ config, lib, pkgs, utils, ... }:
with utils;
with systemdUtils.unitOptions;
with lib;
let
cfg = config.systemd.user;
systemd = config.systemd.package;
inherit
(systemdUtils.lib)
makeUnit
generateUnits
makeJobScript
unitConfig
serviceConfig
commonUnitText
targetToUnit
serviceToUnit
socketToUnit
timerToUnit
pathToUnit;
upstreamUserUnits = [
"app.slice"
"background.slice"
"basic.target"
"bluetooth.target"
"default.target"
"exit.target"
"graphical-session-pre.target"
"graphical-session.target"
"paths.target"
"printer.target"
"session.slice"
"shutdown.target"
"smartcard.target"
"sockets.target"
"sound.target"
"systemd-exit.service"
"timers.target"
"xdg-desktop-autostart.target"
] ++ config.systemd.additionalUpstreamUserUnits;
in {
options = {
systemd.user.extraConfig = mkOption {
default = "";
type = types.lines;
example = "DefaultCPUAccounting=yes";
description = ''
Extra config options for systemd user instances. See man systemd-user.conf for
available options.
'';
};
systemd.user.units = mkOption {
description = "Definition of systemd per-user units.";
default = {};
type = with types; attrsOf (submodule (
{ name, config, ... }:
{ options = concreteUnitOptions;
config = {
unit = mkDefault (makeUnit name config);
};
}));
};
systemd.user.paths = mkOption {
default = {};
type = with types; attrsOf (submodule [ { options = pathOptions; } unitConfig ]);
description = "Definition of systemd per-user path units.";
};
systemd.user.services = mkOption {
default = {};
type = with types; attrsOf (submodule [ { options = serviceOptions; } unitConfig serviceConfig ] );
description = "Definition of systemd per-user service units.";
};
systemd.user.slices = mkOption {
default = {};
type = with types; attrsOf (submodule [ { options = sliceOptions; } unitConfig ] );
description = "Definition of systemd per-user slice units.";
};
systemd.user.sockets = mkOption {
default = {};
type = with types; attrsOf (submodule [ { options = socketOptions; } unitConfig ] );
description = "Definition of systemd per-user socket units.";
};
systemd.user.targets = mkOption {
default = {};
type = with types; attrsOf (submodule [ { options = targetOptions; } unitConfig] );
description = "Definition of systemd per-user target units.";
};
systemd.user.timers = mkOption {
default = {};
type = with types; attrsOf (submodule [ { options = timerOptions; } unitConfig ] );
description = "Definition of systemd per-user timer units.";
};
systemd.additionalUpstreamUserUnits = mkOption {
default = [];
type = types.listOf types.str;
example = [];
description = ''
Additional units shipped with systemd that should be enabled for per-user systemd instances.
'';
internal = true;
};
};
config = {
systemd.additionalUpstreamSystemUnits = [
"user.slice"
];
environment.etc = {
"systemd/user".source = generateUnits "user" cfg.units upstreamUserUnits [];
"systemd/user.conf".text = ''
[Manager]
${cfg.extraConfig}
'';
};
systemd.user.units =
mapAttrs' (n: v: nameValuePair "${n}.path" (pathToUnit n v)) cfg.paths
// mapAttrs' (n: v: nameValuePair "${n}.service" (serviceToUnit n v)) cfg.services
// mapAttrs' (n: v: nameValuePair "${n}.slice" (sliceToUnit n v)) cfg.slices
// mapAttrs' (n: v: nameValuePair "${n}.socket" (socketToUnit n v)) cfg.sockets
// mapAttrs' (n: v: nameValuePair "${n}.target" (targetToUnit n v)) cfg.targets
// mapAttrs' (n: v: nameValuePair "${n}.timer" (timerToUnit n v)) cfg.timers;
# Generate timer units for all services that have a ‘startAt’ value.
systemd.user.timers =
mapAttrs (name: service: {
wantedBy = ["timers.target"];
timerConfig.OnCalendar = service.startAt;
})
(filterAttrs (name: service: service.startAt != []) cfg.services);
# Provide the systemd-user PAM service, required to run systemd
# user instances.
security.pam.services.systemd-user =
{ # Ensure that pam_systemd gets included. This is special-cased
# in systemd to provide XDG_RUNTIME_DIR.
startSession = true;
};
# Some overrides to upstream units.
systemd.services."user@".restartIfChanged = false;
systemd.services.systemd-user-sessions.restartIfChanged = false; # Restart kills all active sessions.
};
}