blob: 992981f0a36ea30a30019e8013fc94ded0b33272 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
|
{ config, pkgs, ... }:
with pkgs.lib;
with import ./systemd-unit-options.nix { inherit config pkgs; };
let
cfg = config.boot.systemd;
systemd = pkgs.systemd;
makeUnit = name: unit:
pkgs.writeTextFile { name = "unit"; inherit (unit) text; destination = "/${name}"; };
upstreamUnits =
[ # Targets.
"basic.target"
"sysinit.target"
"sockets.target"
"graphical.target"
"multi-user.target"
"getty.target"
"rescue.target"
"network.target"
"nss-lookup.target"
"nss-user-lookup.target"
"syslog.target"
"time-sync.target"
#"cryptsetup.target"
"sigpwr.target"
# Udev.
"systemd-udevd-control.socket"
"systemd-udevd-kernel.socket"
"systemd-udevd.service"
"systemd-udev-settle.service"
"systemd-udev-trigger.service"
# Hardware (started by udev when a relevant device is plugged in).
"sound.target"
"bluetooth.target"
"printer.target"
"smartcard.target"
# Login stuff.
"systemd-logind.service"
"autovt@.service"
"systemd-vconsole-setup.service"
"systemd-user-sessions.service"
"dbus-org.freedesktop.login1.service"
"user@.service"
# Journal.
"systemd-journald.socket"
"systemd-journald.service"
"systemd-journal-flush.service"
"syslog.socket"
# SysV init compatibility.
"systemd-initctl.socket"
"systemd-initctl.service"
"runlevel0.target"
"runlevel1.target"
"runlevel2.target"
"runlevel3.target"
"runlevel4.target"
"runlevel5.target"
"runlevel6.target"
# Random seed.
"systemd-random-seed-load.service"
"systemd-random-seed-save.service"
# Utmp maintenance.
"systemd-update-utmp-runlevel.service"
"systemd-update-utmp-shutdown.service"
# Kernel module loading.
"systemd-modules-load.service"
# Filesystems.
"systemd-fsck@.service"
"systemd-fsck-root.service"
"systemd-remount-fs.service"
"local-fs.target"
"local-fs-pre.target"
"remote-fs.target"
"remote-fs-pre.target"
"swap.target"
"dev-hugepages.mount"
"dev-mqueue.mount"
"sys-fs-fuse-connections.mount"
"sys-kernel-config.mount"
"sys-kernel-debug.mount"
# Hibernate / suspend.
"hibernate.target"
"suspend.target"
"sleep.target"
"systemd-hibernate.service"
"systemd-suspend.service"
"systemd-shutdownd.socket"
"systemd-shutdownd.service"
# Reboot stuff.
"reboot.target"
"systemd-reboot.service"
"poweroff.target"
"systemd-poweroff.service"
"halt.target"
"systemd-halt.service"
"ctrl-alt-del.target"
"shutdown.target"
"umount.target"
"final.target"
"kexec.target"
# Password entry.
"systemd-ask-password-console.path"
"systemd-ask-password-console.service"
"systemd-ask-password-wall.path"
"systemd-ask-password-wall.service"
];
upstreamWants =
[ "basic.target.wants"
"sysinit.target.wants"
"sockets.target.wants"
"local-fs.target.wants"
"multi-user.target.wants"
"shutdown.target.wants"
];
rescueService =
''
[Unit]
Description=Rescue Shell
DefaultDependencies=no
Conflicts=shutdown.target
After=sysinit.target
Before=shutdown.target
[Service]
Environment=HOME=/root
WorkingDirectory=/root
ExecStartPre=-${pkgs.coreutils}/bin/echo 'Welcome to rescue mode. Use "systemctl default" or ^D to enter default mode.'
#ExecStart=-/sbin/sulogin
ExecStart=-${pkgs.bashInteractive}/bin/bash --login
ExecStopPost=-${systemd}/bin/systemctl --fail --no-block default
Type=idle
StandardInput=tty-force
StandardOutput=inherit
StandardError=inherit
KillMode=process
# Bash ignores SIGTERM, so we send SIGHUP instead, to ensure that bash
# terminates cleanly.
KillSignal=SIGHUP
'';
fsTarget =
''
[Unit]
Description=All File Systems
Wants=local-fs.target remote-fs.target
'';
makeJobScript = name: content: "${pkgs.writeScriptBin name content}/bin/${name}";
serviceConfig = { name, config, ... }: {
config = {
# Default path for systemd services. Should be quite minimal.
path =
[ pkgs.coreutils
pkgs.findutils
pkgs.gnugrep
pkgs.gnused
systemd
];
};
};
serviceToUnit = name: def:
{ inherit (def) wantedBy;
text =
''
[Unit]
${optionalString (def.description != "") ''
Description=${def.description}
''}
Requires=${concatStringsSep " " def.requires}
Wants=${concatStringsSep " " def.wants}
After=${concatStringsSep " " def.after}
Before=${concatStringsSep " " def.before}
PartOf=${concatStringsSep " " def.partOf}
${def.unitConfig}
[Service]
Environment=PATH=${def.path}
${concatMapStrings (n: "Environment=${n}=${getAttr n def.environment}\n") (attrNames def.environment)}
${optionalString (def.preStart != "") ''
ExecStartPre=${makeJobScript "${name}-prestart.sh" ''
#! ${pkgs.stdenv.shell} -e
${def.preStart}
''}
''}
${optionalString (def.script != "") ''
ExecStart=${makeJobScript "${name}.sh" ''
#! ${pkgs.stdenv.shell} -e
${def.script}
''}
''}
${def.serviceConfig}
'';
};
nixosUnits = mapAttrsToList makeUnit cfg.units;
units = pkgs.runCommand "units" { preferLocalBuild = true; }
''
mkdir -p $out
for i in ${toString upstreamUnits}; do
fn=${systemd}/example/systemd/system/$i
if ! [ -e $fn ]; then echo "missing $fn"; false; fi
if [ -L $fn ]; then
cp -pd $fn $out/
else
ln -s $fn $out/
fi
done
for i in ${toString upstreamWants}; do
fn=${systemd}/example/systemd/system/$i
if ! [ -e $fn ]; then echo "missing $fn"; false; fi
x=$out/$(basename $fn)
mkdir $x
for i in $fn/*; do
y=$x/$(basename $i)
cp -pd $i $y
if ! [ -e $y ]; then rm -v $y; fi
done
done
for i in ${toString nixosUnits}; do
ln -s $i/* $out/
done
${concatStrings (mapAttrsToList (name: unit:
concatMapStrings (name2: ''
mkdir -p $out/${name2}.wants
ln -sfn ../${name} $out/${name2}.wants/
'') unit.wantedBy) cfg.units)}
ln -s ${cfg.defaultUnit} $out/default.target
#ln -s ../getty@tty1.service $out/multi-user.target.wants/
ln -s ../remote-fs.target $out/multi-user.target.wants/
ln -s ../network.target $out/multi-user.target.wants/
''; # */
in
{
###### interface
options = {
boot.systemd.units = mkOption {
description = "Definition of systemd units.";
default = {};
type = types.attrsOf types.optionSet;
options = {
text = mkOption {
types = types.uniq types.string;
description = "Text of this systemd unit.";
};
wantedBy = mkOption {
default = [];
types = types.listOf types.string;
description = "Units that want (i.e. depend on) this unit.";
};
};
};
boot.systemd.services = mkOption {
description = "Definition of systemd services.";
default = {};
type = types.attrsOf types.optionSet;
options = [ serviceOptions serviceConfig ];
};
boot.systemd.defaultUnit = mkOption {
default = "multi-user.target";
type = types.uniq types.string;
description = "Default unit started when the system boots.";
};
services.journald.logKernelMessages = mkOption {
default = true;
type = types.bool;
description = "Whether to log kernel messages.";
};
services.journald.console = mkOption {
default = "";
type = types.uniq types.string;
description = "If non-empty, write log messages to the specified TTY device. Defaults to /dev/console.";
};
};
###### implementation
config = {
system.build.systemd = systemd;
system.build.units = units;
environment.systemPackages = [ systemd ];
environment.etc =
[ { source = units;
target = "systemd/system";
}
{ source = pkgs.writeText "journald.conf"
''
[Journal]
${optionalString (config.services.journald.console != "") ''
ForwardToConsole=yes
TTYPath=${config.services.journald.console}
''}
${optionalString config.services.journald.logKernelMessages ''
ImportKernel=yes
''}
'';
target = "systemd/journald.conf";
}
];
boot.systemd.units =
{ "rescue.service".text = rescueService; }
// { "fs.target" = { text = fsTarget; wantedBy = [ "multi-user.target" ]; }; }
// mapAttrs serviceToUnit cfg.services;
};
}
|