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db4fdc04 | 1 | ;;; GNU Guix --- Functional package management for GNU |
9a8b9eb8 | 2 | ;;; Copyright © 2013, 2014, 2015, 2016 Ludovic Courtès <ludo@gnu.org> |
34044d55 | 3 | ;;; Copyright © 2015, 2016 Alex Kost <alezost@gmail.com> |
4307c476 | 4 | ;;; Copyright © 2015 Mark H Weaver <mhw@netris.org> |
e10964ef | 5 | ;;; Copyright © 2015 Sou Bunnbu <iyzsong@gmail.com> |
db4fdc04 LC |
6 | ;;; |
7 | ;;; This file is part of GNU Guix. | |
8 | ;;; | |
9 | ;;; GNU Guix is free software; you can redistribute it and/or modify it | |
10 | ;;; under the terms of the GNU General Public License as published by | |
11 | ;;; the Free Software Foundation; either version 3 of the License, or (at | |
12 | ;;; your option) any later version. | |
13 | ;;; | |
14 | ;;; GNU Guix is distributed in the hope that it will be useful, but | |
15 | ;;; WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | ;;; GNU General Public License for more details. | |
18 | ;;; | |
19 | ;;; You should have received a copy of the GNU General Public License | |
20 | ;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>. | |
21 | ||
22 | (define-module (gnu services base) | |
e87f0591 | 23 | #:use-module (guix store) |
db4fdc04 | 24 | #:use-module (gnu services) |
0adfe95a | 25 | #:use-module (gnu services dmd) |
4a3b3b07 | 26 | #:use-module (gnu services networking) |
6e828634 | 27 | #:use-module (gnu system pam) |
db4fdc04 | 28 | #:use-module (gnu system shadow) ; 'user-account', etc. |
0adfe95a | 29 | #:use-module (gnu system file-systems) ; 'file-system', etc. |
db4fdc04 | 30 | #:use-module (gnu packages admin) |
151a2c07 | 31 | #:use-module ((gnu packages linux) |
8664cc88 | 32 | #:select (eudev kbd e2fsprogs lvm2 fuse alsa-utils crda gpm)) |
db4fdc04 | 33 | #:use-module ((gnu packages base) |
bdb36958 | 34 | #:select (canonical-package glibc)) |
db4fdc04 | 35 | #:use-module (gnu packages package-management) |
2d1d2dd8 LC |
36 | #:use-module (gnu packages lsh) |
37 | #:use-module (gnu packages lsof) | |
e2f4b305 | 38 | #:use-module ((gnu build file-systems) |
2c071ce9 | 39 | #:select (mount-flags->bit-mask)) |
b5f4e686 | 40 | #:use-module (guix gexp) |
6454b333 | 41 | #:use-module (guix records) |
db4fdc04 LC |
42 | #:use-module (srfi srfi-1) |
43 | #:use-module (srfi srfi-26) | |
6454b333 | 44 | #:use-module (ice-9 match) |
db4fdc04 | 45 | #:use-module (ice-9 format) |
e43e84ba LC |
46 | #:export (fstab-service-type |
47 | root-file-system-service | |
023f391c | 48 | file-system-service |
d6e2a622 | 49 | user-unmount-service |
5dae0186 | 50 | device-mapping-service |
2a13d05e | 51 | swap-service |
a00dd9fb | 52 | user-processes-service |
e10964ef SB |
53 | session-environment-service |
54 | session-environment-service-type | |
a00dd9fb | 55 | host-name-service |
5eca9459 | 56 | console-keymap-service |
62ca0fdf | 57 | console-font-service |
c797fabe RW |
58 | |
59 | udev-configuration | |
60 | udev-configuration? | |
61 | udev-configuration-rules | |
0adfe95a | 62 | udev-service-type |
151a2c07 | 63 | udev-service |
80e6f37e | 64 | udev-rule |
66e4f01c LC |
65 | |
66 | mingetty-configuration | |
67 | mingetty-configuration? | |
db4fdc04 | 68 | mingetty-service |
cd6f6c22 | 69 | mingetty-service-type |
6454b333 LC |
70 | |
71 | %nscd-default-caches | |
72 | %nscd-default-configuration | |
73 | ||
74 | nscd-configuration | |
75 | nscd-configuration? | |
76 | ||
77 | nscd-cache | |
78 | nscd-cache? | |
79 | ||
0adfe95a | 80 | nscd-service-type |
db4fdc04 LC |
81 | nscd-service |
82 | syslog-service | |
0adfe95a LC |
83 | |
84 | guix-configuration | |
85 | guix-configuration? | |
8b198abe | 86 | guix-service |
cd6f6c22 | 87 | guix-service-type |
1c52181f LC |
88 | guix-publish-configuration |
89 | guix-publish-configuration? | |
90 | guix-publish-service | |
91 | guix-publish-service-type | |
8664cc88 LC |
92 | gpm-service-type |
93 | gpm-service | |
0adfe95a | 94 | |
8b198abe | 95 | %base-services)) |
db4fdc04 LC |
96 | |
97 | ;;; Commentary: | |
98 | ;;; | |
99 | ;;; Base system services---i.e., services that 99% of the users will want to | |
100 | ;;; use. | |
101 | ;;; | |
102 | ;;; Code: | |
103 | ||
0adfe95a LC |
104 | \f |
105 | ;;; | |
106 | ;;; File systems. | |
107 | ;;; | |
a00dd9fb | 108 | |
e43e84ba LC |
109 | (define (file-system->fstab-entry file-system) |
110 | "Return a @file{/etc/fstab} entry for @var{file-system}." | |
111 | (string-append (case (file-system-title file-system) | |
112 | ((label) | |
113 | (string-append "LABEL=" (file-system-device file-system))) | |
114 | ((uuid) | |
115 | (string-append | |
116 | "UUID=" | |
117 | (uuid->string (file-system-device file-system)))) | |
118 | (else | |
119 | (file-system-device file-system))) | |
120 | "\t" | |
121 | (file-system-mount-point file-system) "\t" | |
122 | (file-system-type file-system) "\t" | |
123 | (or (file-system-options file-system) "defaults") "\t" | |
124 | ||
125 | ;; XXX: Omit the 'fs_freq' and 'fs_passno' fields because we | |
126 | ;; don't have anything sensible to put in there. | |
127 | )) | |
128 | ||
129 | (define (file-systems->fstab file-systems) | |
130 | "Return a @file{/etc} entry for an @file{fstab} describing | |
131 | @var{file-systems}." | |
132 | `(("fstab" ,(plain-file "fstab" | |
133 | (string-append | |
134 | "\ | |
135 | # This file was generated from your GuixSD configuration. Any changes | |
136 | # will be lost upon reboot or reconfiguration.\n\n" | |
137 | (string-join (map file-system->fstab-entry | |
138 | file-systems) | |
139 | "\n") | |
140 | "\n"))))) | |
141 | ||
142 | (define fstab-service-type | |
143 | ;; The /etc/fstab service. | |
144 | (service-type (name 'fstab) | |
145 | (extensions | |
146 | (list (service-extension etc-service-type | |
147 | file-systems->fstab))) | |
148 | (compose identity) | |
149 | (extend append))) | |
150 | ||
0adfe95a LC |
151 | (define %root-file-system-dmd-service |
152 | (dmd-service | |
be1c2c54 LC |
153 | (documentation "Take care of the root file system.") |
154 | (provision '(root-file-system)) | |
155 | (start #~(const #t)) | |
156 | (stop #~(lambda _ | |
157 | ;; Return #f if successfully stopped. | |
158 | (sync) | |
159 | ||
160 | (call-with-blocked-asyncs | |
161 | (lambda () | |
162 | (let ((null (%make-void-port "w"))) | |
34044d55 | 163 | ;; Close 'shepherd.log'. |
be1c2c54 | 164 | (display "closing log\n") |
34044d55 | 165 | ((@ (shepherd comm) stop-logging)) |
be1c2c54 LC |
166 | |
167 | ;; Redirect the default output ports.. | |
168 | (set-current-output-port null) | |
169 | (set-current-error-port null) | |
170 | ||
171 | ;; Close /dev/console. | |
172 | (for-each close-fdes '(0 1 2)) | |
173 | ||
174 | ;; At this point, there are no open files left, so the | |
175 | ;; root file system can be re-mounted read-only. | |
176 | (mount #f "/" #f | |
177 | (logior MS_REMOUNT MS_RDONLY) | |
178 | #:update-mtab? #f) | |
179 | ||
180 | #f))))) | |
181 | (respawn? #f))) | |
a00dd9fb | 182 | |
0adfe95a | 183 | (define root-file-system-service-type |
00184239 LC |
184 | (dmd-service-type 'root-file-system |
185 | (const %root-file-system-dmd-service))) | |
0adfe95a LC |
186 | |
187 | (define (root-file-system-service) | |
188 | "Return a service whose sole purpose is to re-mount read-only the root file | |
189 | system upon shutdown (aka. cleanly \"umounting\" root.) | |
190 | ||
191 | This service must be the root of the service dependency graph so that its | |
192 | 'stop' action is invoked when dmd is the only process left." | |
193 | (service root-file-system-service-type #f)) | |
194 | ||
195 | (define (file-system->dmd-service-name file-system) | |
196 | "Return the symbol that denotes the service mounting and unmounting | |
197 | FILE-SYSTEM." | |
198 | (symbol-append 'file-system- | |
199 | (string->symbol (file-system-mount-point file-system)))) | |
200 | ||
e502bf89 LC |
201 | (define (mapped-device->dmd-service-name md) |
202 | "Return the symbol that denotes the dmd service of MD, a <mapped-device>." | |
203 | (symbol-append 'device-mapping- | |
204 | (string->symbol (mapped-device-target md)))) | |
205 | ||
206 | (define dependency->dmd-service-name | |
207 | (match-lambda | |
208 | ((? mapped-device? md) | |
209 | (mapped-device->dmd-service-name md)) | |
210 | ((? file-system? fs) | |
211 | (file-system->dmd-service-name fs)))) | |
212 | ||
e43e84ba LC |
213 | (define (file-system-dmd-service file-system) |
214 | "Return a list containing the dmd service for @var{file-system}." | |
215 | (let ((target (file-system-mount-point file-system)) | |
216 | (device (file-system-device file-system)) | |
217 | (type (file-system-type file-system)) | |
218 | (title (file-system-title file-system)) | |
219 | (check? (file-system-check? file-system)) | |
220 | (create? (file-system-create-mount-point? file-system)) | |
221 | (dependencies (file-system-dependencies file-system))) | |
be21979d LC |
222 | (if (file-system-mount? file-system) |
223 | (list | |
224 | (dmd-service | |
225 | (provision (list (file-system->dmd-service-name file-system))) | |
226 | (requirement `(root-file-system | |
227 | ,@(map dependency->dmd-service-name dependencies))) | |
228 | (documentation "Check, mount, and unmount the given file system.") | |
229 | (start #~(lambda args | |
230 | ;; FIXME: Use or factorize with 'mount-file-system'. | |
231 | (let ((device (canonicalize-device-spec #$device '#$title)) | |
232 | (flags #$(mount-flags->bit-mask | |
233 | (file-system-flags file-system)))) | |
234 | #$(if create? | |
235 | #~(mkdir-p #$target) | |
236 | #~#t) | |
237 | #$(if check? | |
238 | #~(begin | |
239 | ;; Make sure fsck.ext2 & co. can be found. | |
240 | (setenv "PATH" | |
241 | (string-append | |
242 | #$e2fsprogs "/sbin:" | |
243 | "/run/current-system/profile/sbin:" | |
244 | (getenv "PATH"))) | |
245 | (check-file-system device #$type)) | |
246 | #~#t) | |
247 | ||
248 | (mount device #$target #$type flags | |
249 | #$(file-system-options file-system)) | |
250 | ||
251 | ;; For read-only bind mounts, an extra remount is | |
252 | ;; needed, as per <http://lwn.net/Articles/281157/>, | |
253 | ;; which still applies to Linux 4.0. | |
254 | (when (and (= MS_BIND (logand flags MS_BIND)) | |
255 | (= MS_RDONLY (logand flags MS_RDONLY))) | |
256 | (mount device #$target #$type | |
257 | (logior MS_BIND MS_REMOUNT MS_RDONLY)))) | |
258 | #t)) | |
259 | (stop #~(lambda args | |
260 | ;; Normally there are no processes left at this point, so | |
261 | ;; TARGET can be safely unmounted. | |
262 | ||
263 | ;; Make sure PID 1 doesn't keep TARGET busy. | |
264 | (chdir "/") | |
265 | ||
266 | (umount #$target) | |
267 | #f)) | |
268 | ||
269 | ;; We need an additional module. | |
270 | (modules `(((gnu build file-systems) | |
271 | #:select (check-file-system canonicalize-device-spec)) | |
272 | ,@%default-modules)) | |
273 | (imported-modules `((gnu build file-systems) | |
274 | ,@%default-imported-modules)))) | |
275 | '()))) | |
e43e84ba | 276 | |
0adfe95a LC |
277 | (define file-system-service-type |
278 | ;; TODO(?): Make this an extensible service that takes <file-system> objects | |
279 | ;; and returns a list of <dmd-service>. | |
e43e84ba LC |
280 | (service-type (name 'file-system) |
281 | (extensions | |
282 | (list (service-extension dmd-root-service-type | |
283 | file-system-dmd-service) | |
284 | (service-extension fstab-service-type | |
285 | identity))))) | |
0adfe95a LC |
286 | |
287 | (define* (file-system-service file-system) | |
288 | "Return a service that mounts @var{file-system}, a @code{<file-system>} | |
289 | object." | |
290 | (service file-system-service-type file-system)) | |
291 | ||
292 | (define user-unmount-service-type | |
293 | (dmd-service-type | |
5f44ee4f | 294 | 'user-file-systems |
0adfe95a LC |
295 | (lambda (known-mount-points) |
296 | (dmd-service | |
297 | (documentation "Unmount manually-mounted file systems.") | |
5f44ee4f | 298 | (provision '(user-file-systems)) |
0adfe95a LC |
299 | (start #~(const #t)) |
300 | (stop #~(lambda args | |
301 | (define (known? mount-point) | |
302 | (member mount-point | |
303 | (cons* "/proc" "/sys" '#$known-mount-points))) | |
304 | ||
305 | ;; Make sure we don't keep the user's mount points busy. | |
306 | (chdir "/") | |
307 | ||
308 | (for-each (lambda (mount-point) | |
309 | (format #t "unmounting '~a'...~%" mount-point) | |
310 | (catch 'system-error | |
311 | (lambda () | |
312 | (umount mount-point)) | |
313 | (lambda args | |
314 | (let ((errno (system-error-errno args))) | |
315 | (format #t "failed to unmount '~a': ~a~%" | |
316 | mount-point (strerror errno)))))) | |
317 | (filter (negate known?) (mount-points))) | |
318 | #f)))))) | |
023f391c | 319 | |
d6e2a622 LC |
320 | (define (user-unmount-service known-mount-points) |
321 | "Return a service whose sole purpose is to unmount file systems not listed | |
322 | in KNOWN-MOUNT-POINTS when it is stopped." | |
0adfe95a | 323 | (service user-unmount-service-type known-mount-points)) |
d6e2a622 | 324 | |
7d57cfd3 LC |
325 | (define %do-not-kill-file |
326 | ;; Name of the file listing PIDs of processes that must survive when halting | |
327 | ;; the system. Typical example is user-space file systems. | |
328 | "/etc/dmd/do-not-kill") | |
329 | ||
0adfe95a LC |
330 | (define user-processes-service-type |
331 | (dmd-service-type | |
00184239 | 332 | 'user-processes |
0adfe95a LC |
333 | (match-lambda |
334 | ((requirements grace-delay) | |
335 | (dmd-service | |
336 | (documentation "When stopped, terminate all user processes.") | |
337 | (provision '(user-processes)) | |
5f44ee4f LC |
338 | (requirement (cons* 'root-file-system 'user-file-systems |
339 | (map file-system->dmd-service-name | |
340 | requirements))) | |
0adfe95a LC |
341 | (start #~(const #t)) |
342 | (stop #~(lambda _ | |
343 | (define (kill-except omit signal) | |
344 | ;; Kill all the processes with SIGNAL except those listed | |
345 | ;; in OMIT and the current process. | |
346 | (let ((omit (cons (getpid) omit))) | |
347 | (for-each (lambda (pid) | |
348 | (unless (memv pid omit) | |
349 | (false-if-exception | |
350 | (kill pid signal)))) | |
351 | (processes)))) | |
352 | ||
353 | (define omitted-pids | |
354 | ;; List of PIDs that must not be killed. | |
355 | (if (file-exists? #$%do-not-kill-file) | |
356 | (map string->number | |
357 | (call-with-input-file #$%do-not-kill-file | |
358 | (compose string-tokenize | |
359 | (@ (ice-9 rdelim) read-string)))) | |
360 | '())) | |
361 | ||
362 | (define (now) | |
363 | (car (gettimeofday))) | |
364 | ||
365 | (define (sleep* n) | |
366 | ;; Really sleep N seconds. | |
367 | ;; Work around <http://bugs.gnu.org/19581>. | |
368 | (define start (now)) | |
369 | (let loop ((elapsed 0)) | |
370 | (when (> n elapsed) | |
371 | (sleep (- n elapsed)) | |
372 | (loop (- (now) start))))) | |
373 | ||
374 | (define lset= (@ (srfi srfi-1) lset=)) | |
375 | ||
376 | (display "sending all processes the TERM signal\n") | |
377 | ||
378 | (if (null? omitted-pids) | |
379 | (begin | |
380 | ;; Easy: terminate all of them. | |
381 | (kill -1 SIGTERM) | |
382 | (sleep* #$grace-delay) | |
383 | (kill -1 SIGKILL)) | |
384 | (begin | |
385 | ;; Kill them all except OMITTED-PIDS. XXX: We would | |
386 | ;; like to (kill -1 SIGSTOP) to get a fixed list of | |
387 | ;; processes, like 'killall5' does, but that seems | |
388 | ;; unreliable. | |
389 | (kill-except omitted-pids SIGTERM) | |
390 | (sleep* #$grace-delay) | |
391 | (kill-except omitted-pids SIGKILL) | |
392 | (delete-file #$%do-not-kill-file))) | |
393 | ||
394 | (let wait () | |
395 | (let ((pids (processes))) | |
396 | (unless (lset= = pids (cons 1 omitted-pids)) | |
397 | (format #t "waiting for process termination\ | |
398 | (processes left: ~s)~%" | |
399 | pids) | |
400 | (sleep* 2) | |
401 | (wait)))) | |
402 | ||
403 | (display "all processes have been terminated\n") | |
404 | #f)) | |
405 | (respawn? #f)))))) | |
406 | ||
407 | (define* (user-processes-service file-systems #:key (grace-delay 4)) | |
a00dd9fb LC |
408 | "Return the service that is responsible for terminating all the processes so |
409 | that the root file system can be re-mounted read-only, just before | |
410 | rebooting/halting. Processes still running GRACE-DELAY seconds after SIGTERM | |
411 | has been sent are terminated with SIGKILL. | |
412 | ||
0adfe95a LC |
413 | The returned service will depend on 'root-file-system' and on all the dmd |
414 | services corresponding to FILE-SYSTEMS. | |
023f391c | 415 | |
a00dd9fb LC |
416 | All the services that spawn processes must depend on this one so that they are |
417 | stopped before 'kill' is called." | |
0adfe95a | 418 | (service user-processes-service-type |
be21979d | 419 | (list (filter file-system-mount? file-systems) grace-delay))) |
d656c14e | 420 | |
0adfe95a | 421 | \f |
e10964ef SB |
422 | ;;; |
423 | ;;; System-wide environment variables. | |
424 | ;;; | |
425 | ||
426 | (define (environment-variables->environment-file vars) | |
427 | "Return a file for pam_env(8) that contains environment variables VARS." | |
428 | (apply mixed-text-file "environment" | |
429 | (append-map (match-lambda | |
430 | ((key . value) | |
431 | (list key "=" value "\n"))) | |
432 | vars))) | |
433 | ||
434 | (define session-environment-service-type | |
435 | (service-type | |
436 | (name 'session-environment) | |
437 | (extensions | |
438 | (list (service-extension | |
439 | etc-service-type | |
440 | (lambda (vars) | |
441 | (list `("environment" | |
442 | ,(environment-variables->environment-file vars))))))) | |
443 | (compose concatenate) | |
444 | (extend append))) | |
445 | ||
446 | (define (session-environment-service vars) | |
447 | "Return a service that builds the @file{/etc/environment}, which can be read | |
448 | by PAM-aware applications to set environment variables for sessions. | |
449 | ||
450 | VARS should be an association list in which both the keys and the values are | |
451 | strings or string-valued gexps." | |
452 | (service session-environment-service-type vars)) | |
453 | ||
454 | \f | |
0adfe95a LC |
455 | ;;; |
456 | ;;; Console & co. | |
457 | ;;; | |
458 | ||
459 | (define host-name-service-type | |
460 | (dmd-service-type | |
00184239 | 461 | 'host-name |
0adfe95a LC |
462 | (lambda (name) |
463 | (dmd-service | |
464 | (documentation "Initialize the machine's host name.") | |
465 | (provision '(host-name)) | |
466 | (start #~(lambda _ | |
467 | (sethostname #$name))) | |
468 | (respawn? #f))))) | |
a00dd9fb | 469 | |
db4fdc04 | 470 | (define (host-name-service name) |
51da7ca0 | 471 | "Return a service that sets the host name to @var{name}." |
0adfe95a | 472 | (service host-name-service-type name)) |
db4fdc04 | 473 | |
62ca0fdf LC |
474 | (define (unicode-start tty) |
475 | "Return a gexp to start Unicode support on @var{tty}." | |
476 | ||
477 | ;; We have to run 'unicode_start' in a pipe so that when it invokes the | |
478 | ;; 'tty' command, that command returns TTY. | |
479 | #~(begin | |
480 | (let ((pid (primitive-fork))) | |
481 | (case pid | |
482 | ((0) | |
483 | (close-fdes 0) | |
484 | (dup2 (open-fdes #$tty O_RDONLY) 0) | |
485 | (close-fdes 1) | |
486 | (dup2 (open-fdes #$tty O_WRONLY) 1) | |
487 | (execl (string-append #$kbd "/bin/unicode_start") | |
488 | "unicode_start")) | |
489 | (else | |
490 | (zero? (cdr (waitpid pid)))))))) | |
491 | ||
0adfe95a LC |
492 | (define console-keymap-service-type |
493 | (dmd-service-type | |
00184239 | 494 | 'console-keymap |
0adfe95a LC |
495 | (lambda (file) |
496 | (dmd-service | |
497 | (documentation (string-append "Load console keymap (loadkeys).")) | |
498 | (provision '(console-keymap)) | |
499 | (start #~(lambda _ | |
500 | (zero? (system* (string-append #$kbd "/bin/loadkeys") | |
501 | #$file)))) | |
502 | (respawn? #f))))) | |
503 | ||
5eca9459 AK |
504 | (define (console-keymap-service file) |
505 | "Return a service to load console keymap from @var{file}." | |
0adfe95a LC |
506 | (service console-keymap-service-type file)) |
507 | ||
508 | (define console-font-service-type | |
509 | (dmd-service-type | |
00184239 | 510 | 'console-font |
0adfe95a LC |
511 | (match-lambda |
512 | ((tty font) | |
513 | (let ((device (string-append "/dev/" tty))) | |
514 | (dmd-service | |
515 | (documentation "Load a Unicode console font.") | |
516 | (provision (list (symbol-append 'console-font- | |
517 | (string->symbol tty)))) | |
518 | ||
519 | ;; Start after mingetty has been started on TTY, otherwise the settings | |
520 | ;; are ignored. | |
521 | (requirement (list (symbol-append 'term- | |
522 | (string->symbol tty)))) | |
523 | ||
524 | (start #~(lambda _ | |
525 | (and #$(unicode-start device) | |
526 | (zero? | |
527 | (system* (string-append #$kbd "/bin/setfont") | |
528 | "-C" #$device #$font))))) | |
529 | (stop #~(const #t)) | |
530 | (respawn? #f))))))) | |
5eca9459 | 531 | |
62ca0fdf LC |
532 | (define* (console-font-service tty #:optional (font "LatGrkCyr-8x16")) |
533 | "Return a service that sets up Unicode support in @var{tty} and loads | |
534 | @var{font} for that tty (fonts are per virtual console in Linux.)" | |
535 | ;; Note: 'LatGrkCyr-8x16' has the advantage of providing three common | |
536 | ;; scripts as well as glyphs for em dash, quotation marks, and other Unicode | |
537 | ;; codepoints notably found in the UTF-8 manual. | |
0adfe95a | 538 | (service console-font-service-type (list tty font))) |
62ca0fdf | 539 | |
66e4f01c LC |
540 | (define-record-type* <mingetty-configuration> |
541 | mingetty-configuration make-mingetty-configuration | |
542 | mingetty-configuration? | |
543 | (mingetty mingetty-configuration-mingetty ;<package> | |
544 | (default mingetty)) | |
545 | (tty mingetty-configuration-tty) ;string | |
546 | (motd mingetty-configuration-motd ;file-like | |
547 | (default (plain-file "motd" "Welcome.\n"))) | |
548 | (auto-login mingetty-auto-login ;string | #f | |
549 | (default #f)) | |
550 | (login-program mingetty-login-program ;gexp | |
551 | (default #f)) | |
552 | (login-pause? mingetty-login-pause? ;Boolean | |
553 | (default #f)) | |
554 | ||
555 | ;; Allow empty passwords by default so that first-time users can log in when | |
556 | ;; the 'root' account has just been created. | |
557 | (allow-empty-passwords? mingetty-configuration-allow-empty-passwords? | |
558 | (default #t))) ;Boolean | |
559 | ||
0adfe95a LC |
560 | (define (mingetty-pam-service conf) |
561 | "Return the list of PAM service needed for CONF." | |
562 | ;; Let 'login' be known to PAM. All the mingetty services will have that | |
563 | ;; PAM service, but that's fine because they're all identical and duplicates | |
564 | ;; are removed. | |
565 | (list (unix-pam-service "login" | |
566 | #:allow-empty-passwords? | |
567 | (mingetty-configuration-allow-empty-passwords? conf) | |
568 | #:motd | |
569 | (mingetty-configuration-motd conf)))) | |
570 | ||
571 | (define mingetty-dmd-service | |
572 | (match-lambda | |
66e4f01c LC |
573 | (($ <mingetty-configuration> mingetty tty motd auto-login login-program |
574 | login-pause? allow-empty-passwords?) | |
0adfe95a LC |
575 | (list |
576 | (dmd-service | |
577 | (documentation "Run mingetty on an tty.") | |
578 | (provision (list (symbol-append 'term- (string->symbol tty)))) | |
579 | ||
580 | ;; Since the login prompt shows the host name, wait for the 'host-name' | |
581 | ;; service to be done. Also wait for udev essentially so that the tty | |
582 | ;; text is not lost in the middle of kernel messages (XXX). | |
583 | (requirement '(user-processes host-name udev)) | |
584 | ||
585 | (start #~(make-forkexec-constructor | |
586 | (list (string-append #$mingetty "/sbin/mingetty") | |
587 | "--noclear" #$tty | |
588 | #$@(if auto-login | |
589 | #~("--autologin" #$auto-login) | |
590 | #~()) | |
591 | #$@(if login-program | |
592 | #~("--loginprog" #$login-program) | |
593 | #~()) | |
594 | #$@(if login-pause? | |
595 | #~("--loginpause") | |
596 | #~())))) | |
597 | (stop #~(make-kill-destructor))))))) | |
598 | ||
599 | (define mingetty-service-type | |
600 | (service-type (name 'mingetty) | |
601 | (extensions (list (service-extension dmd-root-service-type | |
602 | mingetty-dmd-service) | |
603 | (service-extension pam-root-service-type | |
604 | mingetty-pam-service))))) | |
605 | ||
606 | (define* (mingetty-service config) | |
607 | "Return a service to run mingetty according to @var{config}, which specifies | |
608 | the tty to run, among other things." | |
609 | (service mingetty-service-type config)) | |
db4fdc04 | 610 | |
6454b333 LC |
611 | (define-record-type* <nscd-configuration> nscd-configuration |
612 | make-nscd-configuration | |
613 | nscd-configuration? | |
614 | (log-file nscd-configuration-log-file ;string | |
615 | (default "/var/log/nscd.log")) | |
616 | (debug-level nscd-debug-level ;integer | |
617 | (default 0)) | |
618 | ;; TODO: See nscd.conf in glibc for other options to add. | |
619 | (caches nscd-configuration-caches ;list of <nscd-cache> | |
b893f1ae LC |
620 | (default %nscd-default-caches)) |
621 | (name-services nscd-configuration-name-services ;list of <packages> | |
622 | (default '())) | |
623 | (glibc nscd-configuration-glibc ;<package> | |
624 | (default (canonical-package glibc)))) | |
6454b333 LC |
625 | |
626 | (define-record-type* <nscd-cache> nscd-cache make-nscd-cache | |
627 | nscd-cache? | |
628 | (database nscd-cache-database) ;symbol | |
629 | (positive-time-to-live nscd-cache-positive-time-to-live) ;integer | |
630 | (negative-time-to-live nscd-cache-negative-time-to-live | |
631 | (default 20)) ;integer | |
632 | (suggested-size nscd-cache-suggested-size ;integer ("default module | |
633 | ;of hash table") | |
634 | (default 211)) | |
635 | (check-files? nscd-cache-check-files? ;Boolean | |
636 | (default #t)) | |
637 | (persistent? nscd-cache-persistent? ;Boolean | |
638 | (default #t)) | |
639 | (shared? nscd-cache-shared? ;Boolean | |
640 | (default #t)) | |
641 | (max-database-size nscd-cache-max-database-size ;integer | |
642 | (default (* 32 (expt 2 20)))) | |
643 | (auto-propagate? nscd-cache-auto-propagate? ;Boolean | |
644 | (default #t))) | |
645 | ||
646 | (define %nscd-default-caches | |
647 | ;; Caches that we want to enable by default. Note that when providing an | |
648 | ;; empty nscd.conf, all caches are disabled. | |
649 | (list (nscd-cache (database 'hosts) | |
650 | ||
651 | ;; Aggressively cache the host name cache to improve | |
652 | ;; privacy and resilience. | |
653 | (positive-time-to-live (* 3600 12)) | |
654 | (negative-time-to-live 20) | |
655 | (persistent? #t)) | |
656 | ||
657 | (nscd-cache (database 'services) | |
658 | ||
659 | ;; Services are unlikely to change, so we can be even more | |
660 | ;; aggressive. | |
661 | (positive-time-to-live (* 3600 24)) | |
662 | (negative-time-to-live 3600) | |
663 | (check-files? #t) ;check /etc/services changes | |
664 | (persistent? #t)))) | |
665 | ||
666 | (define %nscd-default-configuration | |
667 | ;; Default nscd configuration. | |
668 | (nscd-configuration)) | |
669 | ||
670 | (define (nscd.conf-file config) | |
671 | "Return the @file{nscd.conf} configuration file for @var{config}, an | |
672 | @code{<nscd-configuration>} object." | |
673 | (define cache->config | |
674 | (match-lambda | |
be1c2c54 LC |
675 | (($ <nscd-cache> (= symbol->string database) |
676 | positive-ttl negative-ttl size check-files? | |
677 | persistent? shared? max-size propagate?) | |
678 | (string-append "\nenable-cache\t" database "\tyes\n" | |
679 | ||
680 | "positive-time-to-live\t" database "\t" | |
681 | (number->string positive-ttl) "\n" | |
682 | "negative-time-to-live\t" database "\t" | |
683 | (number->string negative-ttl) "\n" | |
684 | "suggested-size\t" database "\t" | |
685 | (number->string size) "\n" | |
686 | "check-files\t" database "\t" | |
687 | (if check-files? "yes\n" "no\n") | |
688 | "persistent\t" database "\t" | |
689 | (if persistent? "yes\n" "no\n") | |
690 | "shared\t" database "\t" | |
691 | (if shared? "yes\n" "no\n") | |
692 | "max-db-size\t" database "\t" | |
693 | (number->string max-size) "\n" | |
694 | "auto-propagate\t" database "\t" | |
695 | (if propagate? "yes\n" "no\n"))))) | |
6454b333 LC |
696 | |
697 | (match config | |
698 | (($ <nscd-configuration> log-file debug-level caches) | |
be1c2c54 LC |
699 | (plain-file "nscd.conf" |
700 | (string-append "\ | |
6454b333 | 701 | # Configuration of libc's name service cache daemon (nscd).\n\n" |
be1c2c54 LC |
702 | (if log-file |
703 | (string-append "logfile\t" log-file) | |
704 | "") | |
705 | "\n" | |
706 | (if debug-level | |
707 | (string-append "debug-level\t" | |
708 | (number->string debug-level)) | |
709 | "") | |
710 | "\n" | |
711 | (string-concatenate | |
712 | (map cache->config caches))))))) | |
6454b333 | 713 | |
0adfe95a LC |
714 | (define (nscd-dmd-service config) |
715 | "Return a dmd service for CONFIG, an <nscd-configuration> object." | |
716 | (let ((nscd.conf (nscd.conf-file config)) | |
717 | (name-services (nscd-configuration-name-services config))) | |
718 | (list (dmd-service | |
719 | (documentation "Run libc's name service cache daemon (nscd).") | |
720 | (provision '(nscd)) | |
721 | (requirement '(user-processes)) | |
722 | (start #~(make-forkexec-constructor | |
723 | (list (string-append #$(nscd-configuration-glibc config) | |
724 | "/sbin/nscd") | |
725 | "-f" #$nscd.conf "--foreground") | |
726 | ||
727 | #:environment-variables | |
728 | (list (string-append "LD_LIBRARY_PATH=" | |
729 | (string-join | |
730 | (map (lambda (dir) | |
731 | (string-append dir "/lib")) | |
732 | (list #$@name-services)) | |
733 | ":"))))) | |
734 | (stop #~(make-kill-destructor)) | |
735 | ||
736 | (respawn? #f))))) | |
737 | ||
738 | (define nscd-activation | |
739 | ;; Actions to take before starting nscd. | |
740 | #~(begin | |
741 | (use-modules (guix build utils)) | |
742 | (mkdir-p "/var/run/nscd") | |
743 | (mkdir-p "/var/db/nscd"))) ;for the persistent cache | |
744 | ||
745 | (define nscd-service-type | |
746 | (service-type (name 'nscd) | |
747 | (extensions | |
748 | (list (service-extension activation-service-type | |
749 | (const nscd-activation)) | |
750 | (service-extension dmd-root-service-type | |
751 | nscd-dmd-service))) | |
752 | ||
753 | ;; This can be extended by providing additional name services | |
754 | ;; such as nss-mdns. | |
755 | (compose concatenate) | |
756 | (extend (lambda (config name-services) | |
757 | (nscd-configuration | |
758 | (inherit config) | |
759 | (name-services (append | |
760 | (nscd-configuration-name-services config) | |
761 | name-services))))))) | |
762 | ||
b893f1ae | 763 | (define* (nscd-service #:optional (config %nscd-default-configuration)) |
6454b333 | 764 | "Return a service that runs libc's name service cache daemon (nscd) with the |
b893f1ae LC |
765 | given @var{config}---an @code{<nscd-configuration>} object. @xref{Name |
766 | Service Switch}, for an example." | |
0adfe95a LC |
767 | (service nscd-service-type config)) |
768 | ||
769 | (define syslog-service-type | |
770 | (dmd-service-type | |
00184239 | 771 | 'syslog |
0adfe95a LC |
772 | (lambda (config-file) |
773 | (dmd-service | |
774 | (documentation "Run the syslog daemon (syslogd).") | |
775 | (provision '(syslogd)) | |
776 | (requirement '(user-processes)) | |
777 | (start #~(make-forkexec-constructor | |
778 | (list (string-append #$inetutils "/libexec/syslogd") | |
779 | "--no-detach" "--rcfile" #$config-file))) | |
780 | (stop #~(make-kill-destructor)))))) | |
be1c2c54 LC |
781 | |
782 | ;; Snippet adapted from the GNU inetutils manual. | |
783 | (define %default-syslog.conf | |
784 | (plain-file "syslog.conf" " | |
1f3fc60d | 785 | # Log all error messages, authentication messages of |
db4fdc04 LC |
786 | # level notice or higher and anything of level err or |
787 | # higher to the console. | |
788 | # Don't log private authentication messages! | |
6a191274 | 789 | *.alert;auth.notice;authpriv.none /dev/console |
db4fdc04 LC |
790 | |
791 | # Log anything (except mail) of level info or higher. | |
792 | # Don't log private authentication messages! | |
793 | *.info;mail.none;authpriv.none /var/log/messages | |
794 | ||
795 | # Same, in a different place. | |
796 | *.info;mail.none;authpriv.none /dev/tty12 | |
797 | ||
798 | # The authpriv file has restricted access. | |
799 | authpriv.* /var/log/secure | |
800 | ||
801 | # Log all the mail messages in one place. | |
802 | mail.* /var/log/maillog | |
be1c2c54 | 803 | ")) |
0adfe95a | 804 | |
be1c2c54 LC |
805 | (define* (syslog-service #:key (config-file %default-syslog.conf)) |
806 | "Return a service that runs @code{syslogd}. | |
807 | If configuration file name @var{config-file} is not specified, use some | |
808 | reasonable default settings." | |
0adfe95a | 809 | (service syslog-service-type config-file)) |
db4fdc04 | 810 | |
1c52181f LC |
811 | \f |
812 | ;;; | |
813 | ;;; Guix services. | |
814 | ;;; | |
815 | ||
db4fdc04 | 816 | (define* (guix-build-accounts count #:key |
ab6a279a | 817 | (group "guixbuild") |
db4fdc04 | 818 | (first-uid 30001) |
db4fdc04 LC |
819 | (shadow shadow)) |
820 | "Return a list of COUNT user accounts for Guix build users, with UIDs | |
821 | starting at FIRST-UID, and under GID." | |
5250a4f2 LC |
822 | (unfold (cut > <> count) |
823 | (lambda (n) | |
824 | (user-account | |
825 | (name (format #f "guixbuilder~2,'0d" n)) | |
826 | (system? #t) | |
827 | (uid (+ first-uid n -1)) | |
828 | (group group) | |
829 | ||
830 | ;; guix-daemon expects GROUP to be listed as a | |
831 | ;; supplementary group too: | |
832 | ;; <http://lists.gnu.org/archive/html/bug-guix/2013-01/msg00239.html>. | |
833 | (supplementary-groups (list group "kvm")) | |
834 | ||
835 | (comment (format #f "Guix Build User ~2d" n)) | |
836 | (home-directory "/var/empty") | |
837 | (shell #~(string-append #$shadow "/sbin/nologin")))) | |
838 | 1+ | |
839 | 1)) | |
db4fdc04 | 840 | |
2c5c696c LC |
841 | (define (hydra-key-authorization guix) |
842 | "Return a gexp with code to register the hydra.gnu.org public key with | |
843 | GUIX." | |
844 | #~(unless (file-exists? "/etc/guix/acl") | |
845 | (let ((pid (primitive-fork))) | |
846 | (case pid | |
847 | ((0) | |
848 | (let* ((key (string-append #$guix | |
849 | "/share/guix/hydra.gnu.org.pub")) | |
850 | (port (open-file key "r0b"))) | |
851 | (format #t "registering public key '~a'...~%" key) | |
852 | (close-port (current-input-port)) | |
2c5c696c LC |
853 | (dup port 0) |
854 | (execl (string-append #$guix "/bin/guix") | |
855 | "guix" "archive" "--authorize") | |
856 | (exit 1))) | |
857 | (else | |
858 | (let ((status (cdr (waitpid pid)))) | |
859 | (unless (zero? status) | |
860 | (format (current-error-port) "warning: \ | |
861 | failed to register hydra.gnu.org public key: ~a~%" status)))))))) | |
862 | ||
0adfe95a LC |
863 | (define-record-type* <guix-configuration> |
864 | guix-configuration make-guix-configuration | |
865 | guix-configuration? | |
866 | (guix guix-configuration-guix ;<package> | |
867 | (default guix)) | |
868 | (build-group guix-configuration-build-group ;string | |
869 | (default "guixbuild")) | |
870 | (build-accounts guix-configuration-build-accounts ;integer | |
871 | (default 10)) | |
872 | (authorize-key? guix-configuration-authorize-key? ;Boolean | |
873 | (default #t)) | |
874 | (use-substitutes? guix-configuration-use-substitutes? ;Boolean | |
875 | (default #t)) | |
b0b9f6e0 LC |
876 | (substitute-urls guix-configuration-substitute-urls ;list of strings |
877 | (default %default-substitute-urls)) | |
0adfe95a LC |
878 | (extra-options guix-configuration-extra-options ;list of strings |
879 | (default '())) | |
880 | (lsof guix-configuration-lsof ;<package> | |
881 | (default lsof)) | |
882 | (lsh guix-configuration-lsh ;<package> | |
883 | (default lsh))) | |
884 | ||
885 | (define %default-guix-configuration | |
886 | (guix-configuration)) | |
887 | ||
888 | (define (guix-dmd-service config) | |
889 | "Return a <dmd-service> for the Guix daemon service with CONFIG." | |
890 | (match config | |
891 | (($ <guix-configuration> guix build-group build-accounts authorize-key? | |
b0b9f6e0 LC |
892 | use-substitutes? substitute-urls extra-options |
893 | lsof lsh) | |
0adfe95a LC |
894 | (list (dmd-service |
895 | (documentation "Run the Guix daemon.") | |
896 | (provision '(guix-daemon)) | |
897 | (requirement '(user-processes)) | |
898 | (start | |
899 | #~(make-forkexec-constructor | |
900 | (list (string-append #$guix "/bin/guix-daemon") | |
901 | "--build-users-group" #$build-group | |
902 | #$@(if use-substitutes? | |
903 | '() | |
904 | '("--no-substitutes")) | |
b0b9f6e0 | 905 | "--substitute-urls" #$(string-join substitute-urls) |
0adfe95a LC |
906 | #$@extra-options) |
907 | ||
908 | ;; Add 'lsof' (for the GC) and 'lsh' (for offloading) to the | |
909 | ;; daemon's $PATH. | |
910 | #:environment-variables | |
911 | (list (string-append "PATH=" #$lsof "/bin:" #$lsh "/bin")))) | |
912 | (stop #~(make-kill-destructor))))))) | |
913 | ||
914 | (define (guix-accounts config) | |
915 | "Return the user accounts and user groups for CONFIG." | |
916 | (match config | |
917 | (($ <guix-configuration> _ build-group build-accounts) | |
918 | (cons (user-group | |
919 | (name build-group) | |
920 | (system? #t) | |
921 | ||
922 | ;; Use a fixed GID so that we can create the store with the right | |
923 | ;; owner. | |
924 | (id 30000)) | |
925 | (guix-build-accounts build-accounts | |
926 | #:group build-group))))) | |
927 | ||
928 | (define (guix-activation config) | |
929 | "Return the activation gexp for CONFIG." | |
930 | (match config | |
931 | (($ <guix-configuration> guix build-group build-accounts authorize-key?) | |
932 | ;; Assume that the store has BUILD-GROUP as its group. We could | |
933 | ;; otherwise call 'chown' here, but the problem is that on a COW unionfs, | |
934 | ;; chown leads to an entire copy of the tree, which is a bad idea. | |
935 | ||
936 | ;; Optionally authorize hydra.gnu.org's key. | |
937 | (and authorize-key? | |
938 | (hydra-key-authorization guix))))) | |
939 | ||
940 | (define guix-service-type | |
941 | (service-type | |
942 | (name 'guix) | |
943 | (extensions | |
944 | (list (service-extension dmd-root-service-type guix-dmd-service) | |
945 | (service-extension account-service-type guix-accounts) | |
9a8b9eb8 LC |
946 | (service-extension activation-service-type guix-activation) |
947 | (service-extension profile-service-type | |
948 | (compose list guix-configuration-guix)))))) | |
0adfe95a LC |
949 | |
950 | (define* (guix-service #:optional (config %default-guix-configuration)) | |
951 | "Return a service that runs the Guix build daemon according to | |
952 | @var{config}." | |
953 | (service guix-service-type config)) | |
954 | ||
1c52181f LC |
955 | |
956 | (define-record-type* <guix-publish-configuration> | |
957 | guix-publish-configuration make-guix-publish-configuration | |
958 | guix-publish-configuration? | |
959 | (guix guix-publish-configuration-guix ;package | |
960 | (default guix)) | |
961 | (port guix-publish-configuration-port ;number | |
962 | (default 80)) | |
963 | (host guix-publish-configuration-host ;string | |
964 | (default "localhost"))) | |
965 | ||
966 | (define guix-publish-dmd-service | |
967 | (match-lambda | |
968 | (($ <guix-publish-configuration> guix port host) | |
969 | (list (dmd-service | |
970 | (provision '(guix-publish)) | |
971 | (requirement '(guix-daemon)) | |
972 | (start #~(make-forkexec-constructor | |
973 | (list (string-append #$guix "/bin/guix") | |
974 | "publish" "-u" "guix-publish" | |
975 | "-p" #$(number->string port) | |
976 | (string-append "--listen=" #$host)))) | |
977 | (stop #~(make-kill-destructor))))))) | |
978 | ||
979 | (define %guix-publish-accounts | |
980 | (list (user-group (name "guix-publish") (system? #t)) | |
981 | (user-account | |
982 | (name "guix-publish") | |
983 | (group "guix-publish") | |
984 | (system? #t) | |
985 | (comment "guix publish user") | |
986 | (home-directory "/var/empty") | |
987 | (shell #~(string-append #$shadow "/sbin/nologin"))))) | |
988 | ||
989 | (define guix-publish-service-type | |
990 | (service-type (name 'guix-publish) | |
991 | (extensions | |
992 | (list (service-extension dmd-root-service-type | |
993 | guix-publish-dmd-service) | |
994 | (service-extension account-service-type | |
995 | (const %guix-publish-accounts)))))) | |
996 | ||
997 | (define* (guix-publish-service #:key (guix guix) (port 80) (host "localhost")) | |
998 | "Return a service that runs @command{guix publish} listening on @var{host} | |
999 | and @var{port} (@pxref{Invoking guix publish}). | |
1000 | ||
1001 | This assumes that @file{/etc/guix} already contains a signing key pair as | |
1002 | created by @command{guix archive --generate-key} (@pxref{Invoking guix | |
1003 | archive}). If that is not the case, the service will fail to start." | |
1004 | (service guix-publish-service-type | |
1005 | (guix-publish-configuration (guix guix) (port port) (host host)))) | |
1006 | ||
0adfe95a LC |
1007 | \f |
1008 | ;;; | |
1009 | ;;; Udev. | |
1010 | ;;; | |
1011 | ||
1012 | (define-record-type* <udev-configuration> | |
1013 | udev-configuration make-udev-configuration | |
1014 | udev-configuration? | |
1015 | (udev udev-configuration-udev ;<package> | |
1016 | (default udev)) | |
1017 | (rules udev-configuration-rules ;list of <package> | |
1018 | (default '()))) | |
db4fdc04 | 1019 | |
ecd06ca9 LC |
1020 | (define (udev-rules-union packages) |
1021 | "Return the union of the @code{lib/udev/rules.d} directories found in each | |
1022 | item of @var{packages}." | |
1023 | (define build | |
1024 | #~(begin | |
1025 | (use-modules (guix build union) | |
1026 | (guix build utils) | |
1027 | (srfi srfi-1) | |
1028 | (srfi srfi-26)) | |
1029 | ||
1030 | (define %standard-locations | |
1031 | '("/lib/udev/rules.d" "/libexec/udev/rules.d")) | |
1032 | ||
1033 | (define (rules-sub-directory directory) | |
1034 | ;; Return the sub-directory of DIRECTORY containing udev rules, or | |
1035 | ;; #f if none was found. | |
1036 | (find directory-exists? | |
1037 | (map (cut string-append directory <>) %standard-locations))) | |
1038 | ||
1039 | (mkdir-p (string-append #$output "/lib/udev")) | |
1040 | (union-build (string-append #$output "/lib/udev/rules.d") | |
1041 | (filter-map rules-sub-directory '#$packages)))) | |
1042 | ||
be1c2c54 LC |
1043 | (computed-file "udev-rules" build |
1044 | #:modules '((guix build union) | |
1045 | (guix build utils)))) | |
ecd06ca9 | 1046 | |
80e6f37e RW |
1047 | (define (udev-rule file-name contents) |
1048 | "Return a directory with a udev rule file FILE-NAME containing CONTENTS." | |
1049 | (computed-file file-name | |
be1c2c54 LC |
1050 | #~(begin |
1051 | (use-modules (guix build utils)) | |
1052 | ||
1053 | (define rules.d | |
1054 | (string-append #$output "/lib/udev/rules.d")) | |
1055 | ||
1056 | (mkdir-p rules.d) | |
1057 | (call-with-output-file | |
80e6f37e | 1058 | (string-append rules.d "/" #$file-name) |
be1c2c54 | 1059 | (lambda (port) |
80e6f37e | 1060 | (display #$contents port)))) |
be1c2c54 | 1061 | #:modules '((guix build utils)))) |
7f28bf9a | 1062 | |
80e6f37e RW |
1063 | (define kvm-udev-rule |
1064 | ;; Return a directory with a udev rule that changes the group of /dev/kvm to | |
1065 | ;; "kvm" and makes it #o660. Apparently QEMU-KVM used to ship this rule, | |
1066 | ;; but now we have to add it by ourselves. | |
1067 | ||
1068 | ;; Build users are part of the "kvm" group, so we can fearlessly make | |
1069 | ;; /dev/kvm 660 (see <http://bugs.gnu.org/18994>, for background.) | |
1070 | (udev-rule "90-kvm.rules" | |
1071 | "KERNEL==\"kvm\", GROUP=\"kvm\", MODE=\"0660\"\n")) | |
1072 | ||
0adfe95a LC |
1073 | (define udev-dmd-service |
1074 | ;; Return a <dmd-service> for UDEV with RULES. | |
1075 | (match-lambda | |
1076 | (($ <udev-configuration> udev rules) | |
80e6f37e | 1077 | (let* ((rules (udev-rules-union (cons* udev kvm-udev-rule rules))) |
0adfe95a LC |
1078 | (udev.conf (computed-file "udev.conf" |
1079 | #~(call-with-output-file #$output | |
1080 | (lambda (port) | |
1081 | (format port | |
1082 | "udev_rules=\"~a/lib/udev/rules.d\"\n" | |
1083 | #$rules)))))) | |
1084 | (list | |
1085 | (dmd-service | |
1086 | (provision '(udev)) | |
1087 | ||
1088 | ;; Udev needs /dev to be a 'devtmpfs' mount so that new device nodes can | |
1089 | ;; be added: see | |
1090 | ;; <http://www.linuxfromscratch.org/lfs/view/development/chapter07/udev.html>. | |
1091 | (requirement '(root-file-system)) | |
1092 | ||
1093 | (documentation "Populate the /dev directory, dynamically.") | |
1094 | (start #~(lambda () | |
1095 | (define find | |
1096 | (@ (srfi srfi-1) find)) | |
1097 | ||
1098 | (define udevd | |
1099 | ;; Choose the right 'udevd'. | |
1100 | (find file-exists? | |
1101 | (map (lambda (suffix) | |
1102 | (string-append #$udev suffix)) | |
1103 | '("/libexec/udev/udevd" ;udev | |
1104 | "/sbin/udevd")))) ;eudev | |
1105 | ||
1106 | (define (wait-for-udevd) | |
1107 | ;; Wait until someone's listening on udevd's control | |
1108 | ;; socket. | |
1109 | (let ((sock (socket AF_UNIX SOCK_SEQPACKET 0))) | |
1110 | (let try () | |
1111 | (catch 'system-error | |
1112 | (lambda () | |
1113 | (connect sock PF_UNIX "/run/udev/control") | |
1114 | (close-port sock)) | |
1115 | (lambda args | |
1116 | (format #t "waiting for udevd...~%") | |
1117 | (usleep 500000) | |
1118 | (try)))))) | |
1119 | ||
1120 | ;; Allow udev to find the modules. | |
1121 | (setenv "LINUX_MODULE_DIRECTORY" | |
1122 | "/run/booted-system/kernel/lib/modules") | |
1123 | ||
1124 | ;; The first one is for udev, the second one for eudev. | |
1125 | (setenv "UDEV_CONFIG_FILE" #$udev.conf) | |
1126 | (setenv "EUDEV_RULES_DIRECTORY" | |
1127 | (string-append #$rules "/lib/udev/rules.d")) | |
1128 | ||
1129 | (let ((pid (primitive-fork))) | |
1130 | (case pid | |
1131 | ((0) | |
1132 | (exec-command (list udevd))) | |
1133 | (else | |
1134 | ;; Wait until udevd is up and running. This | |
1135 | ;; appears to be needed so that the events | |
1136 | ;; triggered below are actually handled. | |
1137 | (wait-for-udevd) | |
1138 | ||
1139 | ;; Trigger device node creation. | |
1140 | (system* (string-append #$udev "/bin/udevadm") | |
1141 | "trigger" "--action=add") | |
1142 | ||
1143 | ;; Wait for things to settle down. | |
1144 | (system* (string-append #$udev "/bin/udevadm") | |
1145 | "settle") | |
1146 | pid))))) | |
1147 | (stop #~(make-kill-destructor)) | |
1148 | ||
1149 | ;; When halting the system, 'udev' is actually killed by | |
1150 | ;; 'user-processes', i.e., before its own 'stop' method was called. | |
1151 | ;; Thus, make sure it is not respawned. | |
1152 | (respawn? #f))))))) | |
1153 | ||
1154 | (define udev-service-type | |
1155 | (service-type (name 'udev) | |
1156 | (extensions | |
1157 | (list (service-extension dmd-root-service-type | |
1158 | udev-dmd-service))) | |
1159 | ||
1160 | (compose concatenate) ;concatenate the list of rules | |
1161 | (extend (lambda (config rules) | |
1162 | (match config | |
1163 | (($ <udev-configuration> udev initial-rules) | |
1164 | (udev-configuration | |
1165 | (udev udev) | |
1166 | (rules (append initial-rules rules))))))))) | |
1167 | ||
8a7330fd | 1168 | (define* (udev-service #:key (udev eudev) (rules '())) |
ecd06ca9 LC |
1169 | "Run @var{udev}, which populates the @file{/dev} directory dynamically. Get |
1170 | extra rules from the packages listed in @var{rules}." | |
0adfe95a LC |
1171 | (service udev-service-type |
1172 | (udev-configuration (udev udev) (rules rules)))) | |
1173 | ||
1174 | (define device-mapping-service-type | |
1175 | (dmd-service-type | |
00184239 | 1176 | 'device-mapping |
0adfe95a LC |
1177 | (match-lambda |
1178 | ((target open close) | |
1179 | (dmd-service | |
1180 | (provision (list (symbol-append 'device-mapping- (string->symbol target)))) | |
1181 | (requirement '(udev)) | |
1182 | (documentation "Map a device node using Linux's device mapper.") | |
1183 | (start #~(lambda () #$open)) | |
1184 | (stop #~(lambda _ (not #$close))) | |
1185 | (respawn? #f)))))) | |
151a2c07 | 1186 | |
722554a3 | 1187 | (define (device-mapping-service target open close) |
5dae0186 | 1188 | "Return a service that maps device @var{target}, a string such as |
722554a3 LC |
1189 | @code{\"home\"} (meaning @code{/dev/mapper/home}). Evaluate @var{open}, a |
1190 | gexp, to open it, and evaluate @var{close} to close it." | |
0adfe95a LC |
1191 | (service device-mapping-service-type |
1192 | (list target open close))) | |
1193 | ||
1194 | (define swap-service-type | |
1195 | (dmd-service-type | |
00184239 | 1196 | 'swap |
0adfe95a LC |
1197 | (lambda (device) |
1198 | (define requirement | |
1199 | (if (string-prefix? "/dev/mapper/" device) | |
1200 | (list (symbol-append 'device-mapping- | |
1201 | (string->symbol (basename device)))) | |
1202 | '())) | |
1203 | ||
1204 | (dmd-service | |
1205 | (provision (list (symbol-append 'swap- (string->symbol device)))) | |
1206 | (requirement `(udev ,@requirement)) | |
1207 | (documentation "Enable the given swap device.") | |
1208 | (start #~(lambda () | |
1209 | (restart-on-EINTR (swapon #$device)) | |
1210 | #t)) | |
1211 | (stop #~(lambda _ | |
1212 | (restart-on-EINTR (swapoff #$device)) | |
1213 | #f)) | |
1214 | (respawn? #f))))) | |
5dae0186 | 1215 | |
2a13d05e LC |
1216 | (define (swap-service device) |
1217 | "Return a service that uses @var{device} as a swap device." | |
0adfe95a | 1218 | (service swap-service-type device)) |
2a13d05e | 1219 | |
8664cc88 LC |
1220 | |
1221 | (define-record-type* <gpm-configuration> | |
1222 | gpm-configuration make-gpm-configuration gpm-configuration? | |
1223 | (gpm gpm-configuration-gpm) ;package | |
1224 | (options gpm-configuration-options)) ;list of strings | |
1225 | ||
1226 | (define gpm-dmd-service | |
1227 | (match-lambda | |
a907d997 | 1228 | (($ <gpm-configuration> gpm options) |
8664cc88 LC |
1229 | (list (dmd-service |
1230 | (requirement '(udev)) | |
1231 | (provision '(gpm)) | |
1232 | (start #~(lambda () | |
1233 | ;; 'gpm' runs in the background and sets a PID file. | |
1234 | ;; Note that it requires running as "root". | |
1235 | (false-if-exception (delete-file "/var/run/gpm.pid")) | |
1236 | (fork+exec-command (list (string-append #$gpm "/sbin/gpm") | |
1237 | #$@options)) | |
1238 | ||
1239 | ;; Wait for the PID file to appear; declare failure if | |
1240 | ;; it doesn't show up. | |
1241 | (let loop ((i 3)) | |
1242 | (or (file-exists? "/var/run/gpm.pid") | |
1243 | (if (zero? i) | |
1244 | #f | |
1245 | (begin | |
1246 | (sleep 1) | |
1247 | (loop (1- i)))))))) | |
1248 | ||
1249 | (stop #~(lambda (_) | |
1250 | ;; Return #f if successfully stopped. | |
1251 | (not (zero? (system* (string-append #$gpm "/sbin/gpm") | |
1252 | "-k")))))))))) | |
1253 | ||
1254 | (define gpm-service-type | |
1255 | (service-type (name 'gpm) | |
1256 | (extensions | |
1257 | (list (service-extension dmd-root-service-type | |
1258 | gpm-dmd-service))))) | |
1259 | ||
1260 | (define* (gpm-service #:key (gpm gpm) | |
1261 | (options '("-m" "/dev/input/mice" "-t" "ps2"))) | |
1262 | "Run @var{gpm}, the general-purpose mouse daemon, with the given | |
1263 | command-line @var{options}. GPM allows users to use the mouse in the console, | |
1264 | notably to select, copy, and paste text. The default value of @var{options} | |
1265 | uses the @code{ps2} protocol, which works for both USB and PS/2 mice. | |
1266 | ||
1267 | This service is not part of @var{%base-services}." | |
1268 | ;; To test in QEMU, use "-usbdevice mouse" and then, in the monitor, use | |
1269 | ;; "info mice" and "mouse_set X" to use the right mouse. | |
1270 | (service gpm-service-type | |
1271 | (gpm-configuration (gpm gpm) (options options)))) | |
1272 | ||
1273 | \f | |
8b198abe LC |
1274 | (define %base-services |
1275 | ;; Convenience variable holding the basic services. | |
ce8a6dfc | 1276 | (let ((motd (plain-file "motd" " |
8b198abe | 1277 | This is the GNU operating system, welcome!\n\n"))) |
62ca0fdf LC |
1278 | (list (console-font-service "tty1") |
1279 | (console-font-service "tty2") | |
1280 | (console-font-service "tty3") | |
1281 | (console-font-service "tty4") | |
1282 | (console-font-service "tty5") | |
1283 | (console-font-service "tty6") | |
1284 | ||
66e4f01c LC |
1285 | (mingetty-service (mingetty-configuration |
1286 | (tty "tty1") (motd motd))) | |
1287 | (mingetty-service (mingetty-configuration | |
1288 | (tty "tty2") (motd motd))) | |
1289 | (mingetty-service (mingetty-configuration | |
1290 | (tty "tty3") (motd motd))) | |
1291 | (mingetty-service (mingetty-configuration | |
1292 | (tty "tty4") (motd motd))) | |
1293 | (mingetty-service (mingetty-configuration | |
1294 | (tty "tty5") (motd motd))) | |
1295 | (mingetty-service (mingetty-configuration | |
1296 | (tty "tty6") (motd motd))) | |
1297 | ||
4a3b3b07 LC |
1298 | (static-networking-service "lo" "127.0.0.1" |
1299 | #:provision '(loopback)) | |
8b198abe LC |
1300 | (syslog-service) |
1301 | (guix-service) | |
151a2c07 | 1302 | (nscd-service) |
ecd06ca9 | 1303 | |
52bd5734 LC |
1304 | ;; The LVM2 rules are needed as soon as LVM2 or the device-mapper is |
1305 | ;; used, so enable them by default. The FUSE and ALSA rules are | |
1306 | ;; less critical, but handy. | |
68ac258b | 1307 | (udev-service #:rules (list lvm2 fuse alsa-utils crda))))) |
8b198abe | 1308 | |
db4fdc04 | 1309 | ;;; base.scm ends here |