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Merge pull request #297726 from r-vdp/systemd-unit-names

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systemd: add a name option to all systemd units
This commit is contained in:
Florian Klink 2024-04-23 12:58:51 +03:00 committed by GitHub
commit 5a2d4496d3
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8 changed files with 124 additions and 63 deletions
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75
nixos/lib/systemd-lib.nix
View File

@ -1,4 +1,4 @@
{ config, lib, pkgs }:
{ config, lib, pkgs, utils }:
let
inherit (lib)
@ -396,8 +396,41 @@ in rec {
};
};
serviceConfig = { config, ... }: {
config.environment.PATH = mkIf (config.path != []) "${makeBinPath config.path}:${makeSearchPathOutput "bin" "sbin" config.path}";
serviceConfig = { name, config, ... }: {
config = {
name = "${name}.service";
environment.PATH = mkIf (config.path != []) "${makeBinPath config.path}:${makeSearchPathOutput "bin" "sbin" config.path}";
};
};
pathConfig = { name, config, ... }: {
config = {
name = "${name}.path";
};
};
socketConfig = { name, config, ... }: {
config = {
name = "${name}.socket";
};
};
sliceConfig = { name, config, ... }: {
config = {
name = "${name}.slice";
};
};
targetConfig = { name, config, ... }: {
config = {
name = "${name}.target";
};
};
timerConfig = { name, config, ... }: {
config = {
name = "${name}.timer";
};
};
stage2ServiceConfig = {
@ -416,6 +449,7 @@ in rec {
mountConfig = { config, ... }: {
config = {
name = "${utils.escapeSystemdPath config.where}.mount";
mountConfig =
{ What = config.what;
Where = config.where;
@ -429,6 +463,7 @@ in rec {
automountConfig = { config, ... }: {
config = {
name = "${utils.escapeSystemdPath config.where}.automount";
automountConfig =
{ Where = config.where;
};
@ -444,8 +479,8 @@ in rec {
WantedBy=${concatStringsSep " " def.wantedBy}
'';
targetToUnit = name: def:
{ inherit (def) aliases wantedBy requiredBy upheldBy enable overrideStrategy;
targetToUnit = def:
{ inherit (def) name aliases wantedBy requiredBy upheldBy enable overrideStrategy;
text =
''
[Unit]
@ -453,8 +488,8 @@ in rec {
'';
};
serviceToUnit = name: def:
{ inherit (def) aliases wantedBy requiredBy upheldBy enable overrideStrategy;
serviceToUnit = def:
{ inherit (def) name aliases wantedBy requiredBy upheldBy enable overrideStrategy;
text = commonUnitText def (''
[Service]
'' + (let env = cfg.globalEnvironment // def.environment;
@ -463,7 +498,7 @@ in rec {
"Environment=${toJSON "${n}=${env.${n}}"}\n";
# systemd max line length is now 1MiB
# https://github.com/systemd/systemd/commit/e6dde451a51dc5aaa7f4d98d39b8fe735f73d2af
in if stringLength s >= 1048576 then throw "The value of the environment variable ‘${n}’ in systemd service ‘${name}.service’ is too long." else s) (attrNames env))
in if stringLength s >= 1048576 then throw "The value of the environment variable ‘${n}’ in systemd service ‘${def.name}.service’ is too long." else s) (attrNames env))
+ (if def ? reloadIfChanged && def.reloadIfChanged then ''
X-ReloadIfChanged=true
'' else if (def ? restartIfChanged && !def.restartIfChanged) then ''
@ -474,8 +509,8 @@ in rec {
'' + attrsToSection def.serviceConfig);
};
socketToUnit = name: def:
{ inherit (def) aliases wantedBy requiredBy upheldBy enable overrideStrategy;
socketToUnit = def:
{ inherit (def) name aliases wantedBy requiredBy upheldBy enable overrideStrategy;
text = commonUnitText def ''
[Socket]
${attrsToSection def.socketConfig}
@ -484,40 +519,40 @@ in rec {
'';
};
timerToUnit = name: def:
{ inherit (def) aliases wantedBy requiredBy upheldBy enable overrideStrategy;
timerToUnit = def:
{ inherit (def) name aliases wantedBy requiredBy upheldBy enable overrideStrategy;
text = commonUnitText def ''
[Timer]
${attrsToSection def.timerConfig}
'';
};
pathToUnit = name: def:
{ inherit (def) aliases wantedBy requiredBy upheldBy enable overrideStrategy;
pathToUnit = def:
{ inherit (def) name aliases wantedBy requiredBy upheldBy enable overrideStrategy;
text = commonUnitText def ''
[Path]
${attrsToSection def.pathConfig}
'';
};
mountToUnit = name: def:
{ inherit (def) aliases wantedBy requiredBy upheldBy enable overrideStrategy;
mountToUnit = def:
{ inherit (def) name aliases wantedBy requiredBy upheldBy enable overrideStrategy;
text = commonUnitText def ''
[Mount]
${attrsToSection def.mountConfig}
'';
};
automountToUnit = name: def:
{ inherit (def) aliases wantedBy requiredBy upheldBy enable overrideStrategy;
automountToUnit = def:
{ inherit (def) name aliases wantedBy requiredBy upheldBy enable overrideStrategy;
text = commonUnitText def ''
[Automount]
${attrsToSection def.automountConfig}
'';
};
sliceToUnit = name: def:
{ inherit (def) aliases wantedBy requiredBy upheldBy enable overrideStrategy;
sliceToUnit = def:
{ inherit (def) name aliases wantedBy requiredBy upheldBy enable overrideStrategy;
text = commonUnitText def ''
[Slice]
${attrsToSection def.sliceConfig}

32
nixos/lib/systemd-types.nix
View File

@ -5,8 +5,13 @@ let
automountConfig
makeUnit
mountConfig
pathConfig
sliceConfig
socketConfig
stage1ServiceConfig
stage2ServiceConfig
targetConfig
timerConfig
unitConfig
;
@ -48,29 +53,32 @@ let
;
in
rec {
{
units = attrsOf (submodule ({ name, config, ... }: {
options = concreteUnitOptions;
config = { unit = mkDefault (makeUnit name config); };
config = {
name = mkDefault name;
unit = mkDefault (makeUnit name config);
};
}));
services = attrsOf (submodule [ stage2ServiceOptions unitConfig stage2ServiceConfig ]);
initrdServices = attrsOf (submodule [ stage1ServiceOptions unitConfig stage1ServiceConfig ]);
targets = attrsOf (submodule [ stage2CommonUnitOptions unitConfig ]);
initrdTargets = attrsOf (submodule [ stage1CommonUnitOptions unitConfig ]);
targets = attrsOf (submodule [ stage2CommonUnitOptions unitConfig targetConfig ]);
initrdTargets = attrsOf (submodule [ stage1CommonUnitOptions unitConfig targetConfig ]);
sockets = attrsOf (submodule [ stage2SocketOptions unitConfig ]);
initrdSockets = attrsOf (submodule [ stage1SocketOptions unitConfig ]);
sockets = attrsOf (submodule [ stage2SocketOptions unitConfig socketConfig]);
initrdSockets = attrsOf (submodule [ stage1SocketOptions unitConfig socketConfig ]);
timers = attrsOf (submodule [ stage2TimerOptions unitConfig ]);
initrdTimers = attrsOf (submodule [ stage1TimerOptions unitConfig ]);
timers = attrsOf (submodule [ stage2TimerOptions unitConfig timerConfig ]);
initrdTimers = attrsOf (submodule [ stage1TimerOptions unitConfig timerConfig ]);
paths = attrsOf (submodule [ stage2PathOptions unitConfig ]);
initrdPaths = attrsOf (submodule [ stage1PathOptions unitConfig ]);
paths = attrsOf (submodule [ stage2PathOptions unitConfig pathConfig ]);
initrdPaths = attrsOf (submodule [ stage1PathOptions unitConfig pathConfig ]);
slices = attrsOf (submodule [ stage2SliceOptions unitConfig ]);
initrdSlices = attrsOf (submodule [ stage1SliceOptions unitConfig ]);
slices = attrsOf (submodule [ stage2SliceOptions unitConfig sliceConfig ]);
initrdSlices = attrsOf (submodule [ stage1SliceOptions unitConfig sliceConfig ]);
mounts = listOf (submodule [ stage2MountOptions unitConfig mountConfig ]);
initrdMounts = listOf (submodule [ stage1MountOptions unitConfig mountConfig ]);

8
nixos/lib/systemd-unit-options.nix
View File

@ -65,6 +65,14 @@ in rec {
'';
};
name = lib.mkOption {
type = lib.types.str;
description = ''
The name of this systemd unit, including its extension.
This can be used to refer to this unit from other systemd units.
'';
};
overrideStrategy = mkOption {
default = "asDropinIfExists";
type = types.enum [ "asDropinIfExists" "asDropin" ];

8
nixos/lib/utils.nix
View File

@ -35,7 +35,8 @@ let
inherit (lib.strings) toJSON normalizePath escapeC;
in
rec {
let
utils = rec {
# Copy configuration files to avoid having the entire sources in the system closure
copyFile = filePath: pkgs.runCommand (builtins.unsafeDiscardStringContext (baseNameOf filePath)) {} ''
@ -262,11 +263,12 @@ rec {
filter (x: !(elem (getName x) namesToRemove)) packages;
systemdUtils = {
lib = import ./systemd-lib.nix { inherit lib config pkgs; };
lib = import ./systemd-lib.nix { inherit lib config pkgs utils; };
unitOptions = import ./systemd-unit-options.nix { inherit lib systemdUtils; };
types = import ./systemd-types.nix { inherit lib systemdUtils pkgs; };
network = {
units = import ./systemd-network-units.nix { inherit lib systemdUtils; };
};
};
}
};
in utils

23
nixos/modules/system/boot/systemd.nix
View File

@ -595,18 +595,17 @@ in
};
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);
let
withName = cfgToUnit: cfg: lib.nameValuePair cfg.name (cfgToUnit cfg);
in
mapAttrs' (_: withName pathToUnit) cfg.paths
// mapAttrs' (_: withName serviceToUnit) cfg.services
// mapAttrs' (_: withName sliceToUnit) cfg.slices
// mapAttrs' (_: withName socketToUnit) cfg.sockets
// mapAttrs' (_: withName targetToUnit) cfg.targets
// mapAttrs' (_: withName timerToUnit) cfg.timers
// listToAttrs (map (withName mountToUnit) cfg.mounts)
// listToAttrs (map (withName automountToUnit) cfg.automounts);
# Environment of PID 1
systemd.managerEnvironment = {

16
nixos/modules/system/boot/systemd/initrd.nix
View File

@ -490,18 +490,18 @@ in {
targets.initrd.aliases = ["default.target"];
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
mapAttrs' (n: v: nameValuePair "${n}.path" (pathToUnit v)) cfg.paths
// mapAttrs' (n: v: nameValuePair "${n}.service" (serviceToUnit v)) cfg.services
// mapAttrs' (n: v: nameValuePair "${n}.slice" (sliceToUnit v)) cfg.slices
// mapAttrs' (n: v: nameValuePair "${n}.socket" (socketToUnit v)) cfg.sockets
// mapAttrs' (n: v: nameValuePair "${n}.target" (targetToUnit v)) cfg.targets
// mapAttrs' (n: v: nameValuePair "${n}.timer" (timerToUnit v)) cfg.timers
// listToAttrs (map
(v: let n = escapeSystemdPath v.where;
in nameValuePair "${n}.mount" (mountToUnit n v)) cfg.mounts)
in nameValuePair "${n}.mount" (mountToUnit v)) cfg.mounts)
// listToAttrs (map
(v: let n = escapeSystemdPath v.where;
in nameValuePair "${n}.automount" (automountToUnit n v)) cfg.automounts);
in nameValuePair "${n}.automount" (automountToUnit v)) cfg.automounts);
# make sure all the /dev nodes are set up
services.systemd-tmpfiles-setup-dev.wantedBy = ["sysinit.target"];

12
nixos/modules/system/boot/systemd/user.nix
View File

@ -175,12 +175,12 @@ in {
};
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;
mapAttrs' (n: v: nameValuePair "${n}.path" (pathToUnit v)) cfg.paths
// mapAttrs' (n: v: nameValuePair "${n}.service" (serviceToUnit v)) cfg.services
// mapAttrs' (n: v: nameValuePair "${n}.slice" (sliceToUnit v)) cfg.slices
// mapAttrs' (n: v: nameValuePair "${n}.socket" (socketToUnit v)) cfg.sockets
// mapAttrs' (n: v: nameValuePair "${n}.target" (targetToUnit v)) cfg.targets
// mapAttrs' (n: v: nameValuePair "${n}.timer" (timerToUnit v)) cfg.timers;
# Generate timer units for all services that have a ‘startAt’ value.
systemd.user.timers =

13
nixos/tests/systemd.nix
View File

@ -1,7 +1,7 @@
import ./make-test-python.nix ({ pkgs, ... }: {
name = "systemd";
nodes.machine = { lib, ... }: {
nodes.machine = { config, lib, ... }: {
imports = [ common/user-account.nix common/x11.nix ];
virtualisation.emptyDiskImages = [ 512 512 ];
@ -38,9 +38,18 @@ import ./make-test-python.nix ({ pkgs, ... }: {
script = "true";
};
systemd.services.testDependency1 = {
description = "Test Dependency 1";
wantedBy = [ config.systemd.services."testservice1".name ];
serviceConfig.Type = "oneshot";
script = ''
true
'';
};
systemd.services.testservice1 = {
description = "Test Service 1";
wantedBy = [ "multi-user.target" ];
wantedBy = [ config.systemd.targets.multi-user.name ];
serviceConfig.Type = "oneshot";
script = ''
if [ "$XXX_SYSTEM" = foo ]; then