1079 lines
37 KiB
Nix
1079 lines
37 KiB
Nix
{ config, lib, pkgs, utils, ... }:
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with utils;
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with lib;
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with import ./systemd-unit-options.nix { inherit config lib; };
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with import ./systemd-lib.nix { inherit config lib pkgs; };
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let
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cfg = config.systemd;
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systemd = cfg.package;
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upstreamSystemUnits =
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[ # Targets.
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"basic.target"
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"sysinit.target"
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"sockets.target"
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"exit.target"
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"graphical.target"
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"multi-user.target"
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"network.target"
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"network-pre.target"
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"network-online.target"
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"nss-lookup.target"
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"nss-user-lookup.target"
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"time-sync.target"
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#"cryptsetup.target"
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"sigpwr.target"
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"timers.target"
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"paths.target"
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"rpcbind.target"
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# Rescue mode.
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"rescue.target"
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"rescue.service"
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# Udev.
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"systemd-udevd-control.socket"
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"systemd-udevd-kernel.socket"
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"systemd-udevd.service"
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"systemd-udev-settle.service"
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"systemd-udev-trigger.service"
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# hwdb.bin is managed by NixOS
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# "systemd-hwdb-update.service"
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# Consoles.
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"getty.target"
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"getty-pre.target"
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"getty@.service"
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"serial-getty@.service"
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"console-getty.service"
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"container-getty@.service"
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"systemd-vconsole-setup.service"
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# Hardware (started by udev when a relevant device is plugged in).
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"sound.target"
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"bluetooth.target"
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"printer.target"
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"smartcard.target"
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# Login stuff.
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"systemd-logind.service"
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"autovt@.service"
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"systemd-user-sessions.service"
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"dbus-org.freedesktop.import1.service"
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"dbus-org.freedesktop.machine1.service"
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"user@.service"
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"user-runtime-dir@.service"
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# Journal.
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"systemd-journald.socket"
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"systemd-journald.service"
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"systemd-journal-flush.service"
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"systemd-journal-catalog-update.service"
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"systemd-journald-audit.socket"
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"systemd-journald-dev-log.socket"
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"syslog.socket"
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# Coredumps.
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"systemd-coredump.socket"
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"systemd-coredump@.service"
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# SysV init compatibility.
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"systemd-initctl.socket"
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"systemd-initctl.service"
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# Kernel module loading.
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"systemd-modules-load.service"
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"kmod-static-nodes.service"
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# Filesystems.
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"systemd-fsck@.service"
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"systemd-fsck-root.service"
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"systemd-remount-fs.service"
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"local-fs.target"
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"local-fs-pre.target"
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"remote-fs.target"
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"remote-fs-pre.target"
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"swap.target"
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"dev-hugepages.mount"
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"dev-mqueue.mount"
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"sys-fs-fuse-connections.mount"
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"sys-kernel-config.mount"
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"sys-kernel-debug.mount"
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# Maintaining state across reboots.
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"systemd-random-seed.service"
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"systemd-backlight@.service"
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"systemd-rfkill.service"
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"systemd-rfkill.socket"
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# Hibernate / suspend.
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"hibernate.target"
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"suspend.target"
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"suspend-then-hibernate.target"
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"sleep.target"
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"hybrid-sleep.target"
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"systemd-hibernate.service"
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"systemd-hybrid-sleep.service"
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"systemd-suspend.service"
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"systemd-suspend-then-hibernate.service"
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# Reboot stuff.
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"reboot.target"
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"systemd-reboot.service"
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"poweroff.target"
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"systemd-poweroff.service"
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"halt.target"
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"systemd-halt.service"
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"shutdown.target"
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"umount.target"
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"final.target"
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"kexec.target"
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"systemd-kexec.service"
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"systemd-update-utmp.service"
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# Password entry.
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"systemd-ask-password-console.path"
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"systemd-ask-password-console.service"
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"systemd-ask-password-wall.path"
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"systemd-ask-password-wall.service"
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# Slices / containers.
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"slices.target"
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"user.slice"
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"machine.slice"
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"machines.target"
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"systemd-importd.service"
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"systemd-machined.service"
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"systemd-nspawn@.service"
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# Temporary file creation / cleanup.
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"systemd-tmpfiles-clean.service"
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"systemd-tmpfiles-clean.timer"
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"systemd-tmpfiles-setup.service"
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"systemd-tmpfiles-setup-dev.service"
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# Misc.
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"systemd-sysctl.service"
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"dbus-org.freedesktop.timedate1.service"
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"dbus-org.freedesktop.locale1.service"
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"dbus-org.freedesktop.hostname1.service"
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"systemd-timedated.service"
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"systemd-localed.service"
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"systemd-hostnamed.service"
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"systemd-binfmt.service"
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"systemd-exit.service"
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"systemd-update-done.service"
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] ++ optionals config.services.journald.enableHttpGateway [
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"systemd-journal-gatewayd.socket"
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"systemd-journal-gatewayd.service"
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] ++ cfg.additionalUpstreamSystemUnits;
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upstreamSystemWants =
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[ "sysinit.target.wants"
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"sockets.target.wants"
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"local-fs.target.wants"
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"multi-user.target.wants"
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"timers.target.wants"
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];
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upstreamUserUnits =
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[ "basic.target"
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"bluetooth.target"
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"default.target"
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"exit.target"
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"graphical-session-pre.target"
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"graphical-session.target"
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"paths.target"
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"printer.target"
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"shutdown.target"
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"smartcard.target"
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"sockets.target"
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"sound.target"
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"systemd-exit.service"
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"systemd-tmpfiles-clean.service"
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"systemd-tmpfiles-clean.timer"
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"systemd-tmpfiles-setup.service"
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"timers.target"
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];
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makeJobScript = name: text:
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let
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scriptName = replaceChars [ "\\" "@" ] [ "-" "_" ] (shellEscape name);
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out = pkgs.writeTextFile {
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# The derivation name is different from the script file name
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# to keep the script file name short to avoid cluttering logs.
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name = "unit-script-${scriptName}";
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executable = true;
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destination = "/bin/${scriptName}";
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text = ''
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#!${pkgs.runtimeShell} -e
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${text}
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'';
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checkPhase = ''
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${pkgs.stdenv.shell} -n "$out/bin/${scriptName}"
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'';
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};
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in "${out}/bin/${scriptName}";
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unitConfig = { config, options, ... }: {
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config = {
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unitConfig =
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optionalAttrs (config.requires != [])
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{ Requires = toString config.requires; }
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// optionalAttrs (config.wants != [])
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{ Wants = toString config.wants; }
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// optionalAttrs (config.after != [])
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{ After = toString config.after; }
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// optionalAttrs (config.before != [])
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{ Before = toString config.before; }
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// optionalAttrs (config.bindsTo != [])
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{ BindsTo = toString config.bindsTo; }
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// optionalAttrs (config.partOf != [])
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{ PartOf = toString config.partOf; }
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// optionalAttrs (config.conflicts != [])
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{ Conflicts = toString config.conflicts; }
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// optionalAttrs (config.requisite != [])
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{ Requisite = toString config.requisite; }
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// optionalAttrs (config.restartTriggers != [])
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{ X-Restart-Triggers = toString config.restartTriggers; }
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// optionalAttrs (config.description != "") {
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Description = config.description; }
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// optionalAttrs (config.documentation != []) {
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Documentation = toString config.documentation; }
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// optionalAttrs (config.onFailure != []) {
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OnFailure = toString config.onFailure; }
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// optionalAttrs (options.startLimitIntervalSec.isDefined) {
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StartLimitIntervalSec = toString config.startLimitIntervalSec;
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};
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};
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};
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serviceConfig = { name, config, ... }: {
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config = mkMerge
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[ { # Default path for systemd services. Should be quite minimal.
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path = mkAfter
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[ pkgs.coreutils
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pkgs.findutils
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pkgs.gnugrep
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pkgs.gnused
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systemd
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];
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environment.PATH = config.path;
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}
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(mkIf (config.preStart != "")
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{ serviceConfig.ExecStartPre =
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makeJobScript "${name}-pre-start" config.preStart;
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})
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(mkIf (config.script != "")
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{ serviceConfig.ExecStart =
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makeJobScript "${name}-start" config.script + " " + config.scriptArgs;
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})
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(mkIf (config.postStart != "")
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{ serviceConfig.ExecStartPost =
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makeJobScript "${name}-post-start" config.postStart;
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})
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(mkIf (config.reload != "")
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{ serviceConfig.ExecReload =
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makeJobScript "${name}-reload" config.reload;
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})
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(mkIf (config.preStop != "")
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{ serviceConfig.ExecStop =
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makeJobScript "${name}-pre-stop" config.preStop;
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})
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(mkIf (config.postStop != "")
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{ serviceConfig.ExecStopPost =
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makeJobScript "${name}-post-stop" config.postStop;
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})
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];
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};
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mountConfig = { config, ... }: {
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config = {
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mountConfig =
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{ What = config.what;
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Where = config.where;
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} // optionalAttrs (config.type != "") {
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Type = config.type;
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} // optionalAttrs (config.options != "") {
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Options = config.options;
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};
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};
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};
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automountConfig = { config, ... }: {
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config = {
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automountConfig =
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{ Where = config.where;
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};
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};
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};
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commonUnitText = def: ''
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[Unit]
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${attrsToSection def.unitConfig}
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'';
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targetToUnit = name: def:
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{ inherit (def) aliases wantedBy requiredBy enable;
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text =
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''
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[Unit]
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${attrsToSection def.unitConfig}
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'';
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};
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serviceToUnit = name: def:
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{ inherit (def) aliases wantedBy requiredBy enable;
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text = commonUnitText def +
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''
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[Service]
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${let env = cfg.globalEnvironment // def.environment;
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in concatMapStrings (n:
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let s = optionalString (env.${n} != null)
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"Environment=${builtins.toJSON "${n}=${env.${n}}"}\n";
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# systemd max line length is now 1MiB
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# https://github.com/systemd/systemd/commit/e6dde451a51dc5aaa7f4d98d39b8fe735f73d2af
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in if stringLength s >= 1048576 then throw "The value of the environment variable ‘${n}’ in systemd service ‘${name}.service’ is too long." else s) (attrNames env)}
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${if def.reloadIfChanged then ''
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X-ReloadIfChanged=true
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'' else if !def.restartIfChanged then ''
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X-RestartIfChanged=false
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'' else ""}
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${optionalString (!def.stopIfChanged) "X-StopIfChanged=false"}
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${attrsToSection def.serviceConfig}
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'';
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};
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socketToUnit = name: def:
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{ inherit (def) aliases wantedBy requiredBy enable;
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text = commonUnitText def +
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''
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[Socket]
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${attrsToSection def.socketConfig}
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${concatStringsSep "\n" (map (s: "ListenStream=${s}") def.listenStreams)}
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'';
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};
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timerToUnit = name: def:
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{ inherit (def) aliases wantedBy requiredBy enable;
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text = commonUnitText def +
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''
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[Timer]
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${attrsToSection def.timerConfig}
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'';
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};
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pathToUnit = name: def:
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{ inherit (def) aliases wantedBy requiredBy enable;
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text = commonUnitText def +
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''
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[Path]
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${attrsToSection def.pathConfig}
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'';
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};
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mountToUnit = name: def:
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{ inherit (def) aliases wantedBy requiredBy enable;
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text = commonUnitText def +
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''
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[Mount]
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${attrsToSection def.mountConfig}
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'';
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};
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automountToUnit = name: def:
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{ inherit (def) aliases wantedBy requiredBy enable;
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text = commonUnitText def +
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''
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[Automount]
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${attrsToSection def.automountConfig}
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'';
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};
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sliceToUnit = name: def:
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{ inherit (def) aliases wantedBy requiredBy enable;
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text = commonUnitText def +
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''
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[Slice]
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${attrsToSection def.sliceConfig}
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'';
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};
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logindHandlerType = types.enum [
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"ignore" "poweroff" "reboot" "halt" "kexec" "suspend"
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"hibernate" "hybrid-sleep" "suspend-then-hibernate" "lock"
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];
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proxy_env = config.networking.proxy.envVars;
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in
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{
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###### interface
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options = {
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systemd.package = mkOption {
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default = pkgs.systemd;
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defaultText = "pkgs.systemd";
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type = types.package;
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description = "The systemd package.";
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};
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systemd.units = mkOption {
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description = "Definition of systemd units.";
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default = {};
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type = with types; attrsOf (submodule (
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{ name, config, ... }:
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{ options = concreteUnitOptions;
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config = {
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unit = mkDefault (makeUnit name config);
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};
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}));
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};
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systemd.packages = mkOption {
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default = [];
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type = types.listOf types.package;
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example = literalExample "[ pkgs.systemd-cryptsetup-generator ]";
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description = "Packages providing systemd units and hooks.";
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};
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systemd.targets = mkOption {
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default = {};
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type = with types; attrsOf (submodule [ { options = targetOptions; } unitConfig] );
|
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description = "Definition of systemd target units.";
|
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};
|
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systemd.services = mkOption {
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default = {};
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type = with types; attrsOf (submodule [ { options = serviceOptions; } unitConfig serviceConfig ]);
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description = "Definition of systemd service units.";
|
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};
|
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systemd.sockets = mkOption {
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default = {};
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type = with types; attrsOf (submodule [ { options = socketOptions; } unitConfig ]);
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description = "Definition of systemd socket units.";
|
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};
|
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|
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systemd.timers = mkOption {
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default = {};
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type = with types; attrsOf (submodule [ { options = timerOptions; } unitConfig ]);
|
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description = "Definition of systemd timer units.";
|
||
};
|
||
|
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systemd.paths = mkOption {
|
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default = {};
|
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type = with types; attrsOf (submodule [ { options = pathOptions; } unitConfig ]);
|
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description = "Definition of systemd path units.";
|
||
};
|
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|
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systemd.mounts = mkOption {
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default = [];
|
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type = with types; listOf (submodule [ { options = mountOptions; } unitConfig mountConfig ]);
|
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description = ''
|
||
Definition of systemd mount units.
|
||
This is a list instead of an attrSet, because systemd mandates the names to be derived from
|
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the 'where' attribute.
|
||
'';
|
||
};
|
||
|
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systemd.automounts = mkOption {
|
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default = [];
|
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type = with types; listOf (submodule [ { options = automountOptions; } unitConfig automountConfig ]);
|
||
description = ''
|
||
Definition of systemd automount units.
|
||
This is a list instead of an attrSet, because systemd mandates the names to be derived from
|
||
the 'where' attribute.
|
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'';
|
||
};
|
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|
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systemd.slices = mkOption {
|
||
default = {};
|
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type = with types; attrsOf (submodule [ { options = sliceOptions; } unitConfig] );
|
||
description = "Definition of slice configurations.";
|
||
};
|
||
|
||
systemd.generators = mkOption {
|
||
type = types.attrsOf types.path;
|
||
default = {};
|
||
example = { systemd-gpt-auto-generator = "/dev/null"; };
|
||
description = ''
|
||
Definition of systemd generators.
|
||
For each <literal>NAME = VALUE</literal> pair of the attrSet, a link is generated from
|
||
<literal>/etc/systemd/system-generators/NAME</literal> to <literal>VALUE</literal>.
|
||
'';
|
||
};
|
||
|
||
systemd.shutdown = mkOption {
|
||
type = types.attrsOf types.path;
|
||
default = {};
|
||
description = ''
|
||
Definition of systemd shutdown executables.
|
||
For each <literal>NAME = VALUE</literal> pair of the attrSet, a link is generated from
|
||
<literal>/etc/systemd/system-shutdown/NAME</literal> to <literal>VALUE</literal>.
|
||
'';
|
||
};
|
||
|
||
systemd.defaultUnit = mkOption {
|
||
default = "multi-user.target";
|
||
type = types.str;
|
||
description = "Default unit started when the system boots.";
|
||
};
|
||
|
||
systemd.ctrlAltDelUnit = mkOption {
|
||
default = "reboot.target";
|
||
type = types.str;
|
||
example = "poweroff.target";
|
||
description = ''
|
||
Target that should be started when Ctrl-Alt-Delete is pressed.
|
||
'';
|
||
};
|
||
|
||
systemd.globalEnvironment = mkOption {
|
||
type = with types; attrsOf (nullOr (oneOf [ str path package ]));
|
||
default = {};
|
||
example = { TZ = "CET"; };
|
||
description = ''
|
||
Environment variables passed to <emphasis>all</emphasis> systemd units.
|
||
'';
|
||
};
|
||
|
||
systemd.enableCgroupAccounting = mkOption {
|
||
default = true;
|
||
type = types.bool;
|
||
description = ''
|
||
Whether to enable cgroup accounting.
|
||
'';
|
||
};
|
||
|
||
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;
|
||
example = "DefaultLimitCORE=infinity";
|
||
description = ''
|
||
Extra config options for systemd. See man systemd-system.conf for
|
||
available 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 = "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 = "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;
|
||
example = "HibernateDelaySec=1h";
|
||
description = ''
|
||
Extra config options for systemd sleep state logic.
|
||
See sleep.conf.d(5) man page for available 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.tmpfiles.rules = mkOption {
|
||
type = types.listOf types.str;
|
||
default = [];
|
||
example = [ "d /tmp 1777 root root 10d" ];
|
||
description = ''
|
||
Rules for creating and cleaning up temporary files
|
||
automatically. See
|
||
<citerefentry><refentrytitle>tmpfiles.d</refentrytitle><manvolnum>5</manvolnum></citerefentry>
|
||
for the exact format.
|
||
'';
|
||
};
|
||
|
||
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;
|
||
example = [ "debug-shell.service" "systemd-quotacheck.service" ];
|
||
description = ''
|
||
Additional units shipped with systemd that shall be enabled.
|
||
'';
|
||
};
|
||
|
||
systemd.suppressedSystemUnits = mkOption {
|
||
default = [ ];
|
||
type = types.listOf types.str;
|
||
example = [ "systemd-backlight@.service" ];
|
||
description = ''
|
||
A list of units to suppress when generating system systemd configuration directory. This has
|
||
priority over upstream units, <option>systemd.units</option>, and
|
||
<option>systemd.additionalUpstreamSystemUnits</option>. The main purpose of this is to
|
||
suppress a upstream systemd unit with any modifications made to it by other NixOS modules.
|
||
'';
|
||
};
|
||
|
||
};
|
||
|
||
|
||
###### implementation
|
||
|
||
config = {
|
||
|
||
warnings = concatLists (mapAttrsToList (name: service:
|
||
optional (service.serviceConfig.Type or "" == "oneshot" && service.serviceConfig.Restart or "no" != "no")
|
||
"Service ‘${name}.service’ with ‘Type=oneshot’ must have ‘Restart=no’") cfg.services);
|
||
|
||
system.build.units = cfg.units;
|
||
|
||
system.nssModules = [ systemd.out ];
|
||
system.nssDatabases = {
|
||
hosts = (mkMerge [
|
||
[ "mymachines" ]
|
||
(mkOrder 1600 [ "myhostname" ] # 1600 to ensure it's always the last
|
||
)
|
||
]);
|
||
passwd = (mkMerge [
|
||
[ "mymachines" ]
|
||
(mkAfter [ "systemd" ])
|
||
]);
|
||
group = (mkMerge [
|
||
[ "mymachines" ]
|
||
(mkAfter [ "systemd" ])
|
||
]);
|
||
};
|
||
|
||
environment.systemPackages = [ systemd ];
|
||
|
||
environment.etc = let
|
||
# generate contents for /etc/systemd/system-${type} from attrset of links and packages
|
||
hooks = type: links: pkgs.runCommand "system-${type}" {
|
||
preferLocalBuild = true;
|
||
packages = cfg.packages;
|
||
} ''
|
||
set -e
|
||
mkdir -p $out
|
||
for package in $packages
|
||
do
|
||
for hook in $package/lib/systemd/system-${type}/*
|
||
do
|
||
ln -s $hook $out/
|
||
done
|
||
done
|
||
${concatStrings (mapAttrsToList (exec: target: "ln -s ${target} $out/${exec};\n") links)}
|
||
'';
|
||
|
||
enabledUpstreamSystemUnits = filter (n: ! elem n cfg.suppressedSystemUnits) upstreamSystemUnits;
|
||
enabledUnits = filterAttrs (n: v: ! elem n cfg.suppressedSystemUnits) cfg.units;
|
||
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 ''
|
||
DefaultCPUAccounting=yes
|
||
DefaultIOAccounting=yes
|
||
DefaultBlockIOAccounting=yes
|
||
DefaultIPAccounting=yes
|
||
''}
|
||
DefaultLimitCORE=infinity
|
||
${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/00-nixos.conf".text = ''
|
||
# This file is created automatically and should not be modified.
|
||
# Please change the option ‘systemd.tmpfiles.rules’ instead.
|
||
|
||
${concatStringsSep "\n" cfg.tmpfiles.rules}
|
||
'';
|
||
|
||
"tmpfiles.d/home.conf".source = "${systemd}/example/tmpfiles.d/home.conf";
|
||
"tmpfiles.d/journal-nocow.conf".source = "${systemd}/example/tmpfiles.d/journal-nocow.conf";
|
||
"tmpfiles.d/portables.conf".source = "${systemd}/example/tmpfiles.d/portables.conf";
|
||
"tmpfiles.d/static-nodes-permissions.conf".source = "${systemd}/example/tmpfiles.d/static-nodes-permissions.conf";
|
||
"tmpfiles.d/systemd.conf".source = "${systemd}/example/tmpfiles.d/systemd.conf";
|
||
"tmpfiles.d/systemd-nologin.conf".source = "${systemd}/example/tmpfiles.d/systemd-nologin.conf";
|
||
"tmpfiles.d/systemd-nspawn.conf".source = "${systemd}/example/tmpfiles.d/systemd-nspawn.conf";
|
||
"tmpfiles.d/systemd-tmp.conf".source = "${systemd}/example/tmpfiles.d/systemd-tmp.conf";
|
||
"tmpfiles.d/tmp.conf".source = "${systemd}/example/tmpfiles.d/tmp.conf";
|
||
"tmpfiles.d/var.conf".source = "${systemd}/example/tmpfiles.d/var.conf";
|
||
"tmpfiles.d/x11.conf".source = "${systemd}/example/tmpfiles.d/x11.conf";
|
||
|
||
"systemd/system-generators" = { source = hooks "generators" cfg.generators; };
|
||
"systemd/system-shutdown" = { source = hooks "shutdown" cfg.shutdown; };
|
||
});
|
||
|
||
services.dbus.enable = true;
|
||
|
||
users.users.systemd-network.uid = config.ids.uids.systemd-network;
|
||
users.groups.systemd-network.gid = config.ids.gids.systemd-network;
|
||
users.users.systemd-resolve.uid = config.ids.uids.systemd-resolve;
|
||
users.groups.systemd-resolve.gid = config.ids.gids.systemd-resolve;
|
||
|
||
# Target for ‘charon send-keys’ to hook into.
|
||
users.groups.keys.gid = config.ids.gids.keys;
|
||
|
||
systemd.targets.keys =
|
||
{ description = "Security Keys";
|
||
unitConfig.X-StopOnReconfiguration = true;
|
||
};
|
||
|
||
systemd.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
|
||
// listToAttrs (map
|
||
(v: let n = escapeSystemdPath v.where;
|
||
in nameValuePair "${n}.mount" (mountToUnit n v)) cfg.mounts)
|
||
// listToAttrs (map
|
||
(v: let n = escapeSystemdPath v.where;
|
||
in nameValuePair "${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"
|
||
"CRYPTO_SHA256" "DMIID" "AUTOFS4_FS" "TMPFS_POSIX_ACL"
|
||
"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.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:
|
||
{ wantedBy = [ "timers.target" ];
|
||
timerConfig.OnCalendar = service.startAt;
|
||
})
|
||
(filterAttrs (name: service: service.enable && service.startAt != []) cfg.services);
|
||
|
||
# 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.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.targets.local-fs.unitConfig.X-StopOnReconfiguration = true;
|
||
systemd.targets.remote-fs.unitConfig.X-StopOnReconfiguration = true;
|
||
systemd.targets.network-online.wantedBy = [ "multi-user.target" ];
|
||
systemd.services.systemd-binfmt.wants = [ "proc-sys-fs-binfmt_misc.mount" ];
|
||
systemd.services.systemd-importd.environment = proxy_env;
|
||
|
||
# Don't bother with certain units in containers.
|
||
systemd.services.systemd-remount-fs.unitConfig.ConditionVirtualization = "!container";
|
||
systemd.services.systemd-random-seed.unitConfig.ConditionVirtualization = "!container";
|
||
|
||
boot.kernel.sysctl = mkIf (!cfg.coredump.enable) {
|
||
"kernel.core_pattern" = "core";
|
||
};
|
||
};
|
||
|
||
# FIXME: Remove these eventually.
|
||
imports =
|
||
[ (mkRenamedOptionModule [ "boot" "systemd" "sockets" ] [ "systemd" "sockets" ])
|
||
(mkRenamedOptionModule [ "boot" "systemd" "targets" ] [ "systemd" "targets" ])
|
||
(mkRenamedOptionModule [ "boot" "systemd" "services" ] [ "systemd" "services" ])
|
||
(mkRenamedOptionModule [ "jobs" ] [ "systemd" "services" ])
|
||
(mkRemovedOptionModule [ "systemd" "generator-packages" ] "Use systemd.packages instead.")
|
||
];
|
||
}
|