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69a934f2 | 1 | ;;; GNU Guix --- Functional package management for GNU |
f297c213 | 2 | ;;; Copyright © 2018, 2019 Mathieu Othacehe <m.othacehe@gmail.com> |
69a934f2 MO |
3 | ;;; |
4 | ;;; This file is part of GNU Guix. | |
5 | ;;; | |
6 | ;;; GNU Guix is free software; you can redistribute it and/or modify it | |
7 | ;;; under the terms of the GNU General Public License as published by | |
8 | ;;; the Free Software Foundation; either version 3 of the License, or (at | |
9 | ;;; your option) any later version. | |
10 | ;;; | |
11 | ;;; GNU Guix is distributed in the hope that it will be useful, but | |
12 | ;;; WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | ;;; GNU General Public License for more details. | |
15 | ;;; | |
16 | ;;; You should have received a copy of the GNU General Public License | |
17 | ;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>. | |
18 | ||
19 | (define-module (gnu installer parted) | |
20 | #:use-module (gnu installer steps) | |
21 | #:use-module (gnu installer utils) | |
22 | #:use-module (gnu installer newt page) | |
23 | #:use-module (gnu system uuid) | |
24 | #:use-module ((gnu build file-systems) | |
bf304dbc | 25 | #:select (read-partition-uuid |
59e8f3c3 | 26 | read-luks-partition-uuid)) |
69a934f2 MO |
27 | #:use-module (guix build syscalls) |
28 | #:use-module (guix build utils) | |
29 | #:use-module (guix records) | |
bf304dbc | 30 | #:use-module (guix utils) |
69a934f2 MO |
31 | #:use-module (guix i18n) |
32 | #:use-module (parted) | |
33 | #:use-module (ice-9 match) | |
f297c213 | 34 | #:use-module (ice-9 regex) |
bf304dbc | 35 | #:use-module (rnrs io ports) |
69a934f2 MO |
36 | #:use-module (srfi srfi-1) |
37 | #:use-module (srfi srfi-26) | |
38 | #:use-module (srfi srfi-34) | |
39 | #:use-module (srfi srfi-35) | |
40 | #:export (<user-partition> | |
41 | user-partition | |
42 | make-user-partition | |
43 | user-partition? | |
44 | user-partition-name | |
45 | user-partition-type | |
44b2d31c MO |
46 | user-partition-file-name |
47 | user-partition-disk-file-name | |
bf304dbc MO |
48 | user-partition-crypt-label |
49 | user-partition-crypt-password | |
69a934f2 MO |
50 | user-partition-fs-type |
51 | user-partition-bootable? | |
52 | user-partition-esp? | |
53 | user-partition-bios-grub? | |
54 | user-partition-size | |
55 | user-partition-start | |
56 | user-partition-end | |
57 | user-partition-mount-point | |
85caf5f3 | 58 | user-partition-need-formatting? |
69a934f2 MO |
59 | user-partition-parted-object |
60 | ||
61 | find-esp-partition | |
62 | data-partition? | |
63 | metadata-partition? | |
64 | freespace-partition? | |
65 | small-freespace-partition? | |
66 | normal-partition? | |
67 | extended-partition? | |
68 | logical-partition? | |
69 | esp-partition? | |
70 | boot-partition? | |
71 | default-esp-mount-point | |
72 | ||
73 | with-delay-device-in-use? | |
74 | force-device-sync | |
75 | non-install-devices | |
76 | partition-user-type | |
77 | user-fs-type-name | |
78 | partition-filesystem-user-type | |
79 | partition-get-flags | |
80 | partition->user-partition | |
81 | create-special-user-partitions | |
82 | find-user-partition-by-parted-object | |
83 | ||
84 | device-description | |
85 | partition-end-formatted | |
86 | partition-print-number | |
87 | partition-description | |
88 | partitions-descriptions | |
89 | user-partition-description | |
90 | ||
91 | &max-primary-exceeded | |
92 | max-primary-exceeded? | |
93 | &extended-creation-error | |
94 | extended-creation-error? | |
95 | &logical-creation-error | |
96 | logical-creation-error? | |
97 | ||
98 | can-create-partition? | |
99 | mklabel | |
100 | mkpart | |
101 | rmpart | |
102 | ||
103 | create-adjacent-partitions | |
104 | auto-partition | |
105 | ||
106 | &no-root-mount-point | |
107 | no-root-mount-point? | |
108 | ||
109 | check-user-partitions | |
44b2d31c | 110 | set-user-partitions-file-name |
69a934f2 MO |
111 | format-user-partitions |
112 | mount-user-partitions | |
113 | umount-user-partitions | |
114 | with-mounted-partitions | |
115 | user-partitions->file-systems | |
116 | user-partitions->configuration | |
117 | ||
118 | init-parted | |
119 | free-parted)) | |
120 | ||
121 | \f | |
122 | ;;; | |
123 | ;;; Partition record. | |
124 | ;;; | |
125 | ||
126 | (define-record-type* <user-partition> | |
127 | user-partition make-user-partition | |
128 | user-partition? | |
129 | (name user-partition-name ;string | |
130 | (default #f)) | |
131 | (type user-partition-type | |
132 | (default 'normal)) ; 'normal | 'logical | 'extended | |
44b2d31c | 133 | (file-name user-partition-file-name |
69a934f2 | 134 | (default #f)) |
44b2d31c | 135 | (disk-file-name user-partition-disk-file-name |
69a934f2 | 136 | (default #f)) |
bf304dbc MO |
137 | (crypt-label user-partition-crypt-label |
138 | (default #f)) | |
139 | (crypt-password user-partition-crypt-password | |
140 | (default #f)) | |
69a934f2 MO |
141 | (fs-type user-partition-fs-type |
142 | (default 'ext4)) | |
143 | (bootable? user-partition-bootable? | |
144 | (default #f)) | |
145 | (esp? user-partition-esp? | |
146 | (default #f)) | |
147 | (bios-grub? user-partition-bios-grub? | |
148 | (default #f)) | |
149 | (size user-partition-size | |
150 | (default #f)) | |
151 | (start user-partition-start ;start as string (e.g. '11MB') | |
152 | (default #f)) | |
153 | (end user-partition-end ;same as start | |
154 | (default #f)) | |
155 | (mount-point user-partition-mount-point ;string | |
156 | (default #f)) | |
85caf5f3 | 157 | (need-formatting? user-partition-need-formatting? ; boolean |
69a934f2 MO |
158 | (default #f)) |
159 | (parted-object user-partition-parted-object ; <partition> from parted | |
160 | (default #f))) | |
161 | ||
162 | \f | |
163 | ;; | |
164 | ;; Utilities. | |
165 | ;; | |
166 | ||
167 | (define (find-esp-partition partitions) | |
168 | "Find and return the ESP partition among PARTITIONS." | |
169 | (find esp-partition? partitions)) | |
170 | ||
171 | (define (data-partition? partition) | |
172 | "Return #t if PARTITION is a partition dedicated to data (by opposition to | |
173 | freespace, metadata and protected partition types), return #f otherwise." | |
174 | (let ((type (partition-type partition))) | |
175 | (not (any (lambda (flag) | |
176 | (member flag type)) | |
177 | '(free-space metadata protected))))) | |
178 | ||
179 | (define (metadata-partition? partition) | |
180 | "Return #t if PARTITION is a metadata partition, #f otherwise." | |
181 | (let ((type (partition-type partition))) | |
182 | (member 'metadata type))) | |
183 | ||
184 | (define (freespace-partition? partition) | |
185 | "Return #t if PARTITION is a free-space partition, #f otherwise." | |
186 | (let ((type (partition-type partition))) | |
187 | (member 'free-space type))) | |
188 | ||
189 | (define* (small-freespace-partition? device | |
190 | partition | |
191 | #:key (max-size MEBIBYTE-SIZE)) | |
192 | "Return #t is PARTITION is a free-space partition with less a size strictly | |
193 | inferior to MAX-SIZE, #f otherwise." | |
194 | (let ((size (partition-length partition)) | |
195 | (max-sector-size (/ max-size | |
196 | (device-sector-size device)))) | |
197 | (< size max-sector-size))) | |
198 | ||
199 | (define (normal-partition? partition) | |
200 | "return #t if partition is a normal partition, #f otherwise." | |
201 | (let ((type (partition-type partition))) | |
202 | (member 'normal type))) | |
203 | ||
204 | (define (extended-partition? partition) | |
205 | "return #t if partition is an extended partition, #f otherwise." | |
206 | (let ((type (partition-type partition))) | |
207 | (member 'extended type))) | |
208 | ||
209 | (define (logical-partition? partition) | |
210 | "Return #t if PARTITION is a logical partition, #f otherwise." | |
211 | (let ((type (partition-type partition))) | |
212 | (member 'logical type))) | |
213 | ||
214 | (define (partition-user-type partition) | |
215 | "Return the type of PARTITION, to be stored in the TYPE field of | |
216 | <user-partition> record. It can be 'normal, 'extended or 'logical." | |
217 | (cond ((normal-partition? partition) | |
218 | 'normal) | |
219 | ((extended-partition? partition) | |
220 | 'extended) | |
221 | ((logical-partition? partition) | |
222 | 'logical) | |
223 | (else #f))) | |
224 | ||
225 | (define (esp-partition? partition) | |
226 | "Return #t if partition has the ESP flag, return #f otherwise." | |
227 | (let* ((disk (partition-disk partition)) | |
228 | (disk-type (disk-disk-type disk)) | |
229 | (has-extended? (disk-type-check-feature | |
230 | disk-type | |
231 | DISK-TYPE-FEATURE-EXTENDED))) | |
232 | (and (data-partition? partition) | |
233 | (not has-extended?) | |
234 | (partition-is-flag-available? partition PARTITION-FLAG-ESP) | |
235 | (partition-get-flag partition PARTITION-FLAG-ESP)))) | |
236 | ||
237 | (define (boot-partition? partition) | |
238 | "Return #t if partition has the boot flag, return #f otherwise." | |
239 | (and (data-partition? partition) | |
240 | (partition-is-flag-available? partition PARTITION-FLAG-BOOT) | |
241 | (partition-get-flag partition PARTITION-FLAG-BOOT))) | |
242 | ||
243 | ||
244 | ;; The default mount point for ESP partitions. | |
245 | (define default-esp-mount-point | |
246 | (make-parameter "/boot/efi")) | |
247 | ||
248 | (define (efi-installation?) | |
249 | "Return #t if an EFI installation should be performed, #f otherwise." | |
250 | (file-exists? "/sys/firmware/efi")) | |
251 | ||
252 | (define (user-fs-type-name fs-type) | |
253 | "Return the name of FS-TYPE as specified by libparted." | |
254 | (case fs-type | |
255 | ((ext4) "ext4") | |
256 | ((btrfs) "btrfs") | |
257 | ((fat32) "fat32") | |
258 | ((swap) "linux-swap"))) | |
259 | ||
260 | (define (user-fs-type->mount-type fs-type) | |
261 | "Return the mount type of FS-TYPE." | |
262 | (case fs-type | |
263 | ((ext4) "ext4") | |
264 | ((btrfs) "btrfs") | |
265 | ((fat32) "vfat"))) | |
266 | ||
267 | (define (partition-filesystem-user-type partition) | |
268 | "Return the filesystem type of PARTITION, to be stored in the FS-TYPE field | |
269 | of <user-partition> record." | |
270 | (let ((fs-type (partition-fs-type partition))) | |
271 | (and fs-type | |
272 | (let ((name (filesystem-type-name fs-type))) | |
273 | (cond | |
274 | ((string=? name "ext4") 'ext4) | |
275 | ((string=? name "btrfs") 'btrfs) | |
276 | ((string=? name "fat32") 'fat32) | |
277 | ((or (string=? name "swsusp") | |
278 | (string=? name "linux-swap(v0)") | |
279 | (string=? name "linux-swap(v1)")) | |
280 | 'swap) | |
281 | (else | |
282 | (error (format #f "Unhandled ~a fs-type~%" name)))))))) | |
283 | ||
284 | (define (partition-get-flags partition) | |
285 | "Return the list of flags supported by the given PARTITION." | |
286 | (filter-map (lambda (flag) | |
287 | (and (partition-get-flag partition flag) | |
288 | flag)) | |
289 | (partition-flags partition))) | |
290 | ||
291 | (define (partition->user-partition partition) | |
292 | "Convert PARTITION into a <user-partition> record and return it." | |
293 | (let* ((disk (partition-disk partition)) | |
294 | (device (disk-device disk)) | |
295 | (disk-type (disk-disk-type disk)) | |
296 | (has-name? (disk-type-check-feature | |
297 | disk-type | |
298 | DISK-TYPE-FEATURE-PARTITION-NAME)) | |
299 | (name (and has-name? | |
300 | (data-partition? partition) | |
301 | (partition-get-name partition)))) | |
302 | (user-partition | |
303 | (name (and (and name | |
304 | (not (string=? name ""))) | |
305 | name)) | |
306 | (type (or (partition-user-type partition) | |
307 | 'normal)) | |
44b2d31c MO |
308 | (file-name (partition-get-path partition)) |
309 | (disk-file-name (device-path device)) | |
69a934f2 MO |
310 | (fs-type (or (partition-filesystem-user-type partition) |
311 | 'ext4)) | |
312 | (mount-point (and (esp-partition? partition) | |
313 | (default-esp-mount-point))) | |
314 | (bootable? (boot-partition? partition)) | |
315 | (esp? (esp-partition? partition)) | |
316 | (parted-object partition)))) | |
317 | ||
318 | (define (create-special-user-partitions partitions) | |
319 | "Return a list with a <user-partition> record describing the ESP partition | |
320 | found in PARTITIONS, if any." | |
321 | (filter-map (lambda (partition) | |
322 | (and (esp-partition? partition) | |
323 | (partition->user-partition partition))) | |
324 | partitions)) | |
325 | ||
326 | (define (find-user-partition-by-parted-object user-partitions | |
327 | partition) | |
328 | "Find and return the <user-partition> record in USER-PARTITIONS list which | |
329 | PARTED-OBJECT field equals PARTITION, return #f if not found." | |
330 | (find (lambda (user-partition) | |
331 | (equal? (user-partition-parted-object user-partition) | |
332 | partition)) | |
333 | user-partitions)) | |
334 | ||
335 | \f | |
336 | ;; | |
337 | ;; Devices | |
338 | ;; | |
339 | ||
44b2d31c | 340 | (define (with-delay-device-in-use? file-name) |
69a934f2 MO |
341 | "Call DEVICE-IN-USE? with a few retries, as the first re-read will often |
342 | fail. See rereadpt function in wipefs.c of util-linux for an explanation." | |
f297c213 MO |
343 | ;; Kernel always return EINVAL for BLKRRPART on loopdevices. |
344 | (and (not (string-match "/dev/loop*" file-name)) | |
345 | (let loop ((try 4)) | |
346 | (usleep 250000) | |
347 | (let ((in-use? (device-in-use? file-name))) | |
348 | (if (and in-use? (> try 0)) | |
349 | (loop (- try 1)) | |
350 | in-use?))))) | |
69a934f2 MO |
351 | |
352 | (define* (force-device-sync device) | |
353 | "Force a flushing of the given DEVICE." | |
354 | (device-open device) | |
355 | (device-sync device) | |
356 | (device-close device)) | |
357 | ||
358 | (define (non-install-devices) | |
359 | "Return all the available devices, except the busy one, allegedly the | |
360 | install device. DEVICE-IS-BUSY? is a parted call, checking if the device is | |
361 | mounted. The install image uses an overlayfs so the install device does not | |
362 | appear as mounted and won't be considered as busy. So use also DEVICE-IN-USE? | |
363 | from (guix build syscalls) module, who will try to re-read the device's | |
364 | partition table to determine whether or not it is already used (like sfdisk | |
365 | from util-linux)." | |
366 | (remove (lambda (device) | |
44b2d31c | 367 | (let ((file-name (device-path device))) |
69a934f2 | 368 | (or (device-is-busy? device) |
44b2d31c | 369 | (with-delay-device-in-use? file-name)))) |
69a934f2 MO |
370 | (devices))) |
371 | ||
372 | \f | |
373 | ;; | |
374 | ;; Disk and partition printing. | |
375 | ;; | |
376 | ||
377 | (define* (device-description device #:optional disk) | |
378 | "Return a string describing the given DEVICE." | |
379 | (let* ((type (device-type device)) | |
44b2d31c | 380 | (file-name (device-path device)) |
69a934f2 MO |
381 | (model (device-model device)) |
382 | (type-str (device-type->string type)) | |
383 | (disk-type (if disk | |
384 | (disk-disk-type disk) | |
385 | (disk-probe device))) | |
386 | (length (device-length device)) | |
387 | (sector-size (device-sector-size device)) | |
388 | (end (unit-format-custom-byte device | |
389 | (* length sector-size) | |
390 | UNIT-GIGABYTE))) | |
391 | (string-join | |
392 | `(,@(if (string=? model "") | |
393 | `(,type-str) | |
394 | `(,model ,(string-append "(" type-str ")"))) | |
44b2d31c | 395 | ,file-name |
69a934f2 MO |
396 | ,end |
397 | ,@(if disk-type | |
398 | `(,(disk-type-name disk-type)) | |
399 | '())) | |
400 | " "))) | |
401 | ||
402 | (define (partition-end-formatted device partition) | |
403 | "Return as a string the end of PARTITION with the relevant unit." | |
404 | (unit-format-byte | |
405 | device | |
406 | (- | |
407 | (* (+ (partition-end partition) 1) | |
408 | (device-sector-size device)) | |
409 | 1))) | |
410 | ||
411 | (define (partition-print-number partition) | |
412 | "Convert the given partition NUMBER to string." | |
413 | (let ((number (partition-number partition))) | |
414 | (number->string number))) | |
415 | ||
416 | (define (partition-description partition user-partition) | |
417 | "Return a string describing the given PARTITION, located on the DISK of | |
418 | DEVICE." | |
419 | ||
420 | (define (partition-print-type partition) | |
421 | "Return the type of PARTITION as a string." | |
422 | (if (freespace-partition? partition) | |
423 | (G_ "Free space") | |
424 | (let ((type (partition-type partition))) | |
425 | (match type | |
426 | ((type-symbol) | |
427 | (symbol->string type-symbol)))))) | |
428 | ||
429 | (define (partition-print-flags partition) | |
430 | "Return the flags of PARTITION as a string of comma separated flags." | |
431 | (string-join | |
432 | (filter-map | |
433 | (lambda (flag) | |
434 | (and (partition-get-flag partition flag) | |
435 | (partition-flag-get-name flag))) | |
436 | (partition-flags partition)) | |
437 | ",")) | |
438 | ||
439 | (define (maybe-string-pad string length) | |
440 | "Returned a string formatted by padding STRING of LENGTH characters to the | |
441 | right. If STRING is #f use an empty string." | |
bf304dbc MO |
442 | (if (and string (not (string=? string ""))) |
443 | (string-pad-right string length) | |
444 | "")) | |
69a934f2 MO |
445 | |
446 | (let* ((disk (partition-disk partition)) | |
447 | (device (disk-device disk)) | |
448 | (disk-type (disk-disk-type disk)) | |
449 | (has-name? (disk-type-check-feature | |
450 | disk-type | |
451 | DISK-TYPE-FEATURE-PARTITION-NAME)) | |
452 | (has-extended? (disk-type-check-feature | |
453 | disk-type | |
454 | DISK-TYPE-FEATURE-EXTENDED)) | |
455 | (part-type (partition-print-type partition)) | |
456 | (number (and (not (freespace-partition? partition)) | |
457 | (partition-print-number partition))) | |
458 | (name (and has-name? | |
459 | (if (freespace-partition? partition) | |
460 | (G_ "Free space") | |
461 | (partition-get-name partition)))) | |
462 | (start (unit-format device | |
463 | (partition-start partition))) | |
464 | (end (partition-end-formatted device partition)) | |
465 | (size (unit-format device (partition-length partition))) | |
466 | (fs-type (partition-fs-type partition)) | |
467 | (fs-type-name (and fs-type | |
468 | (filesystem-type-name fs-type))) | |
bf304dbc MO |
469 | (crypt-label (and user-partition |
470 | (user-partition-crypt-label user-partition))) | |
69a934f2 MO |
471 | (flags (and (not (freespace-partition? partition)) |
472 | (partition-print-flags partition))) | |
473 | (mount-point (and user-partition | |
474 | (user-partition-mount-point user-partition)))) | |
475 | `(,(or number "") | |
476 | ,@(if has-extended? | |
477 | (list part-type) | |
478 | '()) | |
479 | ,size | |
480 | ,(or fs-type-name "") | |
481 | ,(or flags "") | |
482 | ,(or mount-point "") | |
bf304dbc | 483 | ,(or crypt-label "") |
69a934f2 MO |
484 | ,(maybe-string-pad name 30)))) |
485 | ||
486 | (define (partitions-descriptions partitions user-partitions) | |
487 | "Return a list of strings describing all the partitions found on | |
488 | DEVICE. METADATA partitions are not described. The strings are padded to the | |
489 | right so that they can be displayed as a table." | |
490 | ||
491 | (define (max-length-column lists column-index) | |
492 | "Return the maximum length of the string at position COLUMN-INDEX in the | |
493 | list of string lists LISTS." | |
494 | (apply max | |
495 | (map (lambda (list) | |
496 | (string-length | |
497 | (list-ref list column-index))) | |
498 | lists))) | |
499 | ||
500 | (define (pad-descriptions descriptions) | |
501 | "Return a padded version of the list of string lists DESCRIPTIONS. The | |
502 | strings are padded to the length of the longer string in a same column, as | |
503 | determined by MAX-LENGTH-COLUMN procedure." | |
504 | (let* ((description-length (length (car descriptions))) | |
505 | (paddings (map (lambda (index) | |
506 | (max-length-column descriptions index)) | |
507 | (iota description-length)))) | |
508 | (map (lambda (description) | |
509 | (map string-pad-right description paddings)) | |
510 | descriptions))) | |
511 | ||
512 | (let* ((descriptions | |
513 | (map | |
514 | (lambda (partition) | |
515 | (let ((user-partition | |
516 | (find-user-partition-by-parted-object user-partitions | |
517 | partition))) | |
518 | (partition-description partition user-partition))) | |
519 | partitions)) | |
520 | (padded-descriptions (if (null? partitions) | |
521 | '() | |
522 | (pad-descriptions descriptions)))) | |
523 | (map (cut string-join <> " ") padded-descriptions))) | |
524 | ||
525 | (define (user-partition-description user-partition) | |
526 | "Return a string describing the given USER-PARTITION record." | |
527 | (let* ((partition (user-partition-parted-object user-partition)) | |
528 | (disk (partition-disk partition)) | |
529 | (disk-type (disk-disk-type disk)) | |
530 | (device (disk-device disk)) | |
531 | (has-name? (disk-type-check-feature | |
532 | disk-type | |
533 | DISK-TYPE-FEATURE-PARTITION-NAME)) | |
534 | (has-extended? (disk-type-check-feature | |
535 | disk-type | |
536 | DISK-TYPE-FEATURE-EXTENDED)) | |
537 | (name (user-partition-name user-partition)) | |
538 | (type (user-partition-type user-partition)) | |
539 | (type-name (symbol->string type)) | |
540 | (fs-type (user-partition-fs-type user-partition)) | |
541 | (fs-type-name (user-fs-type-name fs-type)) | |
542 | (bootable? (user-partition-bootable? user-partition)) | |
543 | (esp? (user-partition-esp? user-partition)) | |
85caf5f3 | 544 | (need-formatting? (user-partition-need-formatting? user-partition)) |
bf304dbc | 545 | (crypt-label (user-partition-crypt-label user-partition)) |
69a934f2 MO |
546 | (size (user-partition-size user-partition)) |
547 | (mount-point (user-partition-mount-point user-partition))) | |
548 | `(,@(if has-name? | |
549 | `((name . ,(string-append "Name: " (or name "None")))) | |
550 | '()) | |
551 | ,@(if (and has-extended? | |
552 | (freespace-partition? partition) | |
553 | (not (eq? type 'logical))) | |
554 | `((type . ,(string-append "Type: " type-name))) | |
555 | '()) | |
556 | ,@(if (eq? type 'extended) | |
557 | '() | |
558 | `((fs-type . ,(string-append "Filesystem type: " fs-type-name)))) | |
559 | ,@(if (or (eq? type 'extended) | |
560 | (eq? fs-type 'swap) | |
561 | (not has-extended?)) | |
562 | '() | |
563 | `((bootable . ,(string-append "Bootable flag: " | |
564 | (if bootable? "On" "Off"))))) | |
565 | ,@(if (and (not has-extended?) | |
566 | (not (eq? fs-type 'swap))) | |
567 | `((esp? . ,(string-append "ESP flag: " | |
568 | (if esp? "On" "Off")))) | |
569 | '()) | |
570 | ,@(if (freespace-partition? partition) | |
571 | (let ((size-formatted | |
572 | (or size (unit-format device | |
573 | (partition-length partition))))) | |
574 | `((size . ,(string-append "Size : " size-formatted)))) | |
575 | '()) | |
bf304dbc MO |
576 | ,@(if (or (eq? type 'extended) |
577 | (eq? fs-type 'swap)) | |
578 | '() | |
579 | `((crypt-label | |
580 | . ,(string-append | |
581 | "Encryption: " | |
582 | (if crypt-label | |
583 | (format #f "Yes (label ~a)" crypt-label) | |
584 | "No"))))) | |
69a934f2 MO |
585 | ,@(if (or (freespace-partition? partition) |
586 | (eq? fs-type 'swap)) | |
587 | '() | |
85caf5f3 | 588 | `((need-formatting? |
69a934f2 | 589 | . ,(string-append "Format the partition? : " |
85caf5f3 | 590 | (if need-formatting? "Yes" "No"))))) |
69a934f2 MO |
591 | ,@(if (or (eq? type 'extended) |
592 | (eq? fs-type 'swap)) | |
593 | '() | |
594 | `((mount-point | |
595 | . ,(string-append "Mount point : " | |
596 | (or mount-point | |
597 | (and esp? (default-esp-mount-point)) | |
598 | "None")))))))) | |
599 | ||
600 | \f | |
601 | ;; | |
602 | ;; Partition table creation. | |
603 | ;; | |
604 | ||
605 | (define (mklabel device type-name) | |
606 | "Create a partition table on DEVICE. TYPE-NAME is the type of the partition | |
607 | table, \"msdos\" or \"gpt\"." | |
608 | (let ((type (disk-type-get type-name))) | |
609 | (disk-new-fresh device type))) | |
610 | ||
611 | \f | |
612 | ;; | |
613 | ;; Partition creation. | |
614 | ;; | |
615 | ||
616 | ;; The maximum count of primary partitions is exceeded. | |
617 | (define-condition-type &max-primary-exceeded &condition | |
618 | max-primary-exceeded?) | |
619 | ||
620 | ;; It is not possible to create an extended partition. | |
621 | (define-condition-type &extended-creation-error &condition | |
622 | extended-creation-error?) | |
623 | ||
624 | ;; It is not possible to create a logical partition. | |
625 | (define-condition-type &logical-creation-error &condition | |
626 | logical-creation-error?) | |
627 | ||
628 | (define (can-create-primary? disk) | |
629 | "Return #t if it is possible to create a primary partition on DISK, return | |
630 | #f otherwise." | |
631 | (let ((max-primary (disk-get-max-primary-partition-count disk))) | |
632 | (find (lambda (number) | |
633 | (not (disk-get-partition disk number))) | |
634 | (iota max-primary 1)))) | |
635 | ||
636 | (define (can-create-extended? disk) | |
637 | "Return #t if it is possible to create an extended partition on DISK, return | |
638 | #f otherwise." | |
639 | (let* ((disk-type (disk-disk-type disk)) | |
640 | (has-extended? (disk-type-check-feature | |
641 | disk-type | |
642 | DISK-TYPE-FEATURE-EXTENDED))) | |
643 | (and (can-create-primary? disk) | |
644 | has-extended? | |
645 | (not (disk-extended-partition disk))))) | |
646 | ||
647 | (define (can-create-logical? disk) | |
648 | "Return #t is it is possible to create a logical partition on DISK, return | |
649 | #f otherwise." | |
650 | (let* ((disk-type (disk-disk-type disk)) | |
651 | (has-extended? (disk-type-check-feature | |
652 | disk-type | |
653 | DISK-TYPE-FEATURE-EXTENDED))) | |
654 | (and has-extended? | |
655 | (disk-extended-partition disk)))) | |
656 | ||
657 | (define (can-create-partition? user-part) | |
658 | "Return #t if it is possible to create the given USER-PART record, return #f | |
659 | otherwise." | |
660 | (let* ((type (user-partition-type user-part)) | |
661 | (partition (user-partition-parted-object user-part)) | |
662 | (disk (partition-disk partition))) | |
663 | (case type | |
664 | ((normal) | |
665 | (or (can-create-primary? disk) | |
666 | (raise | |
667 | (condition (&max-primary-exceeded))))) | |
668 | ((extended) | |
669 | (or (can-create-extended? disk) | |
670 | (raise | |
671 | (condition (&extended-creation-error))))) | |
672 | ((logical) | |
673 | (or (can-create-logical? disk) | |
674 | (raise | |
675 | (condition (&logical-creation-error)))))))) | |
676 | ||
677 | (define* (mkpart disk user-partition | |
678 | #:key (previous-partition #f)) | |
679 | "Create the given USER-PARTITION on DISK. The PREVIOUS-PARTITION argument as | |
680 | to be set to the partition preceeding USER-PARTITION if any." | |
681 | ||
682 | (define (parse-start-end start end) | |
683 | "Parse start and end strings as positions on DEVICE expressed with a unit, | |
684 | like '100GB' or '12.2KiB'. Return a list of 4 elements, the start sector, its | |
685 | range (1 unit large area centered on start sector), the end sector and its | |
686 | range." | |
687 | (let ((device (disk-device disk))) | |
688 | (call-with-values | |
689 | (lambda () | |
690 | (unit-parse start device)) | |
691 | (lambda (start-sector start-range) | |
692 | (call-with-values | |
693 | (lambda () | |
694 | (unit-parse end device)) | |
695 | (lambda (end-sector end-range) | |
696 | (list start-sector start-range | |
697 | end-sector end-range))))))) | |
698 | ||
699 | (define* (extend-ranges! start-range end-range | |
700 | #:key (offset 0)) | |
701 | "Try to extend START-RANGE by 1 MEBIBYTE to the right and END-RANGE by 1 | |
702 | MEBIBYTE to the left. This way, if the disk is aligned on 2048 sectors of | |
703 | 512KB (like frequently), we will have a chance for the | |
704 | 'optimal-align-constraint' to succeed. Do not extend ranges if that would | |
705 | cause them to cross." | |
706 | (let* ((device (disk-device disk)) | |
707 | (start-range-end (geometry-end start-range)) | |
708 | (end-range-start (geometry-start end-range)) | |
709 | (mebibyte-sector-size (/ MEBIBYTE-SIZE | |
710 | (device-sector-size device))) | |
711 | (new-start-range-end | |
712 | (+ start-range-end mebibyte-sector-size offset)) | |
713 | (new-end-range-start | |
714 | (- end-range-start mebibyte-sector-size offset))) | |
715 | (when (< new-start-range-end new-end-range-start) | |
716 | (geometry-set-end start-range new-start-range-end) | |
717 | (geometry-set-start end-range new-end-range-start)))) | |
718 | ||
719 | (match (parse-start-end (user-partition-start user-partition) | |
720 | (user-partition-end user-partition)) | |
721 | ((start-sector start-range end-sector end-range) | |
722 | (let* ((prev-end (if previous-partition | |
723 | (partition-end previous-partition) | |
724 | 0)) | |
725 | (start-distance (- start-sector prev-end)) | |
726 | (type (user-partition-type user-partition)) | |
727 | ;; There should be at least 2 unallocated sectors in front of each | |
728 | ;; logical partition, otherwise parted will fail badly: | |
729 | ;; https://gparted.org/h2-fix-msdos-pt.php#apply-action-fail. | |
730 | (start-offset (if previous-partition | |
731 | (- 3 start-distance) | |
732 | 0)) | |
733 | (start-sector* (if (and (eq? type 'logical) | |
734 | (< start-distance 3)) | |
735 | (+ start-sector start-offset) | |
736 | start-sector))) | |
737 | ;; This is a hackery but parted almost always fails to create optimally | |
738 | ;; aligned partitions (unless specifiying percentages) because, the | |
739 | ;; default range of 1MB centered on the start sector is not enough when | |
740 | ;; the optimal alignment is 2048 sectors of 512KB. | |
741 | (extend-ranges! start-range end-range #:offset start-offset) | |
742 | ||
743 | (let* ((device (disk-device disk)) | |
744 | (disk-type (disk-disk-type disk)) | |
745 | (length (device-length device)) | |
746 | (name (user-partition-name user-partition)) | |
747 | (filesystem-type | |
748 | (filesystem-type-get | |
749 | (user-fs-type-name | |
750 | (user-partition-fs-type user-partition)))) | |
751 | (flags `(,@(if (user-partition-bootable? user-partition) | |
752 | `(,PARTITION-FLAG-BOOT) | |
753 | '()) | |
754 | ,@(if (user-partition-esp? user-partition) | |
755 | `(,PARTITION-FLAG-ESP) | |
756 | '()) | |
757 | ,@(if (user-partition-bios-grub? user-partition) | |
758 | `(,PARTITION-FLAG-BIOS-GRUB) | |
759 | '()))) | |
760 | (has-name? (disk-type-check-feature | |
761 | disk-type | |
762 | DISK-TYPE-FEATURE-PARTITION-NAME)) | |
763 | (partition-type (partition-type->int type)) | |
764 | (partition (partition-new disk | |
765 | #:type partition-type | |
766 | #:filesystem-type filesystem-type | |
767 | #:start start-sector* | |
768 | #:end end-sector)) | |
769 | (user-constraint (constraint-new | |
770 | #:start-align 'any | |
771 | #:end-align 'any | |
772 | #:start-range start-range | |
773 | #:end-range end-range | |
774 | #:min-size 1 | |
775 | #:max-size length)) | |
776 | (dev-constraint | |
777 | (device-get-optimal-aligned-constraint device)) | |
778 | (final-constraint (constraint-intersect user-constraint | |
779 | dev-constraint)) | |
780 | (no-constraint (constraint-any device)) | |
781 | ;; Try to create a partition with an optimal alignment | |
782 | ;; constraint. If it fails, fallback to creating a partition with | |
783 | ;; no specific constraint. | |
784 | (partition-ok? | |
785 | (or (disk-add-partition disk partition final-constraint) | |
786 | (disk-add-partition disk partition no-constraint)))) | |
787 | ;; Set the partition name if supported. | |
788 | (when (and partition-ok? has-name? name) | |
789 | (partition-set-name partition name)) | |
790 | ||
791 | ;; Set flags is required. | |
792 | (for-each (lambda (flag) | |
793 | (and (partition-is-flag-available? partition flag) | |
794 | (partition-set-flag partition flag 1))) | |
795 | flags) | |
796 | ||
797 | (and partition-ok? | |
798 | (partition-set-system partition filesystem-type) | |
799 | partition)))))) | |
800 | ||
801 | \f | |
802 | ;; | |
803 | ;; Partition destruction. | |
804 | ;; | |
805 | ||
806 | (define (rmpart disk number) | |
807 | "Remove the partition with the given NUMBER on DISK." | |
808 | (let ((partition (disk-get-partition disk number))) | |
809 | (disk-remove-partition disk partition))) | |
810 | ||
811 | \f | |
812 | ;; | |
813 | ;; Auto partitionning. | |
814 | ;; | |
815 | ||
816 | (define* (create-adjacent-partitions disk partitions | |
817 | #:key (last-partition-end 0)) | |
818 | "Create the given PARTITIONS on DISK. LAST-PARTITION-END is the sector from | |
819 | which we want to start creating partitions. The START and END of each created | |
820 | partition are computed from its SIZE value and the position of the last | |
821 | partition." | |
822 | (let ((device (disk-device disk))) | |
823 | (let loop ((partitions partitions) | |
824 | (remaining-space (- (device-length device) | |
825 | last-partition-end)) | |
826 | (start last-partition-end)) | |
827 | (match partitions | |
828 | (() '()) | |
829 | ((partition . rest) | |
830 | (let* ((size (user-partition-size partition)) | |
831 | (percentage-size (and (string? size) | |
832 | (read-percentage size))) | |
833 | (sector-size (device-sector-size device)) | |
834 | (partition-size (if percentage-size | |
835 | (exact->inexact | |
836 | (* (/ percentage-size 100) | |
837 | remaining-space)) | |
838 | size)) | |
839 | (end-partition (min (- (device-length device) 1) | |
840 | (nearest-exact-integer | |
841 | (+ start partition-size 1)))) | |
842 | (name (user-partition-name partition)) | |
843 | (type (user-partition-type partition)) | |
844 | (fs-type (user-partition-fs-type partition)) | |
845 | (start-formatted (unit-format-custom device | |
846 | start | |
847 | UNIT-SECTOR)) | |
848 | (end-formatted (unit-format-custom device | |
849 | end-partition | |
850 | UNIT-SECTOR)) | |
851 | (new-user-partition (user-partition | |
852 | (inherit partition) | |
853 | (start start-formatted) | |
854 | (end end-formatted))) | |
855 | (new-partition | |
856 | (mkpart disk new-user-partition))) | |
857 | (if new-partition | |
858 | (cons (user-partition | |
859 | (inherit new-user-partition) | |
44b2d31c MO |
860 | (file-name (partition-get-path new-partition)) |
861 | (disk-file-name (device-path device)) | |
69a934f2 MO |
862 | (parted-object new-partition)) |
863 | (loop rest | |
864 | (if (eq? type 'extended) | |
865 | remaining-space | |
866 | (- remaining-space | |
867 | (partition-length new-partition))) | |
868 | (if (eq? type 'extended) | |
869 | (+ start 1) | |
870 | (+ (partition-end new-partition) 1)))) | |
871 | (error | |
872 | (format #f "Unable to create partition ~a~%" name))))))))) | |
873 | ||
85caf5f3 | 874 | (define (force-user-partitions-formatting user-partitions) |
69a934f2 MO |
875 | "Set the NEED-FORMATING? fields to #t on all <user-partition> records of |
876 | USER-PARTITIONS list and return the updated list." | |
877 | (map (lambda (p) | |
878 | (user-partition | |
879 | (inherit p) | |
85caf5f3 | 880 | (need-formatting? #t))) |
69a934f2 MO |
881 | user-partitions)) |
882 | ||
883 | (define* (auto-partition disk | |
bf304dbc MO |
884 | #:key |
885 | (scheme 'entire-root)) | |
69a934f2 MO |
886 | "Automatically create partitions on DISK. All the previous |
887 | partitions (except the ESP on a GPT disk, if present) are wiped. SCHEME is the | |
888 | desired partitioning scheme. It can be 'entire-root or | |
889 | 'entire-root-home. 'entire-root will create a swap partition and a root | |
890 | partition occupying all the remaining space. 'entire-root-home will create a | |
891 | swap partition, a root partition and a home partition." | |
892 | (let* ((device (disk-device disk)) | |
893 | (disk-type (disk-disk-type disk)) | |
894 | (has-extended? (disk-type-check-feature | |
895 | disk-type | |
896 | DISK-TYPE-FEATURE-EXTENDED)) | |
897 | (partitions (filter data-partition? (disk-partitions disk))) | |
898 | (esp-partition (find-esp-partition partitions)) | |
899 | ;; According to | |
900 | ;; https://wiki.archlinux.org/index.php/EFI_system_partition, the ESP | |
901 | ;; size should be at least 550MiB. | |
902 | (new-esp-size (nearest-exact-integer | |
903 | (/ (* 550 MEBIBYTE-SIZE) | |
904 | (device-sector-size device)))) | |
905 | (end-esp-partition (and esp-partition | |
906 | (partition-end esp-partition))) | |
907 | (non-boot-partitions (remove esp-partition? partitions)) | |
908 | (bios-grub-size (/ (* 3 MEBIBYTE-SIZE) | |
909 | (device-sector-size device))) | |
910 | (five-percent-disk (nearest-exact-integer | |
911 | (* 0.05 (device-length device)))) | |
912 | (default-swap-size (nearest-exact-integer | |
913 | (/ (* 4 GIGABYTE-SIZE) | |
914 | (device-sector-size device)))) | |
915 | ;; Use a 4GB size for the swap if it represents less than 5% of the | |
916 | ;; disk space. Otherwise, set the swap size to 5% of the disk space. | |
917 | (swap-size (min default-swap-size five-percent-disk))) | |
918 | ||
919 | (if has-extended? | |
920 | ;; msdos - remove everything. | |
921 | (disk-delete-all disk) | |
922 | ;; gpt - remove everything but esp if it exists. | |
923 | (for-each | |
924 | (lambda (partition) | |
925 | (and (data-partition? partition) | |
926 | (disk-remove-partition disk partition))) | |
927 | non-boot-partitions)) | |
928 | ||
929 | (let* ((start-partition | |
930 | (and (not has-extended?) | |
931 | (not esp-partition) | |
932 | (if (efi-installation?) | |
933 | (user-partition | |
934 | (fs-type 'fat32) | |
935 | (esp? #t) | |
936 | (size new-esp-size) | |
937 | (mount-point (default-esp-mount-point))) | |
938 | (user-partition | |
939 | (fs-type 'ext4) | |
940 | (bootable? #t) | |
941 | (bios-grub? #t) | |
942 | (size bios-grub-size))))) | |
943 | (new-partitions | |
bf304dbc MO |
944 | (cond |
945 | ((or (eq? scheme 'entire-root) | |
5737ba84 MO |
946 | (eq? scheme 'entire-encrypted-root)) |
947 | (let ((encrypted? (eq? scheme 'entire-encrypted-root))) | |
bf304dbc MO |
948 | `(,@(if start-partition |
949 | `(,start-partition) | |
950 | '()) | |
5737ba84 | 951 | ,@(if encrypted? |
44b2d31c MO |
952 | '() |
953 | `(,(user-partition | |
954 | (fs-type 'swap) | |
955 | (size swap-size)))) | |
bf304dbc MO |
956 | ,(user-partition |
957 | (fs-type 'ext4) | |
958 | (bootable? has-extended?) | |
5737ba84 | 959 | (crypt-label (and encrypted? "cryptroot")) |
bf304dbc MO |
960 | (size "100%") |
961 | (mount-point "/"))))) | |
962 | ((or (eq? scheme 'entire-root-home) | |
5737ba84 MO |
963 | (eq? scheme 'entire-encrypted-root-home)) |
964 | (let ((encrypted? (eq? scheme 'entire-encrypted-root-home))) | |
bf304dbc MO |
965 | `(,@(if start-partition |
966 | `(,start-partition) | |
967 | '()) | |
968 | ,(user-partition | |
969 | (fs-type 'ext4) | |
970 | (bootable? has-extended?) | |
5737ba84 | 971 | (crypt-label (and encrypted? "cryptroot")) |
bf304dbc MO |
972 | (size "33%") |
973 | (mount-point "/")) | |
974 | ,@(if has-extended? | |
975 | `(,(user-partition | |
976 | (type 'extended) | |
977 | (size "100%"))) | |
978 | '()) | |
5737ba84 | 979 | ,@(if encrypted? |
bf304dbc MO |
980 | '() |
981 | `(,(user-partition | |
982 | (type (if has-extended? | |
983 | 'logical | |
984 | 'normal)) | |
985 | (fs-type 'swap) | |
986 | (size swap-size)))) | |
987 | ,(user-partition | |
988 | (type (if has-extended? | |
989 | 'logical | |
990 | 'normal)) | |
991 | (fs-type 'ext4) | |
5737ba84 | 992 | (crypt-label (and encrypted? "crypthome")) |
bf304dbc MO |
993 | (size "100%") |
994 | (mount-point "/home"))))))) | |
85caf5f3 | 995 | (new-partitions* (force-user-partitions-formatting |
69a934f2 MO |
996 | new-partitions))) |
997 | (create-adjacent-partitions disk | |
998 | new-partitions* | |
999 | #:last-partition-end | |
1000 | (or end-esp-partition 0))))) | |
1001 | ||
1002 | \f | |
1003 | ;; | |
1004 | ;; Convert user-partitions. | |
1005 | ;; | |
1006 | ||
1007 | ;; No root mount point found. | |
1008 | (define-condition-type &no-root-mount-point &condition | |
1009 | no-root-mount-point?) | |
1010 | ||
1011 | (define (check-user-partitions user-partitions) | |
1012 | "Return #t if the USER-PARTITIONS lists contains one <user-partition> record | |
1013 | with a mount-point set to '/', raise &no-root-mount-point condition | |
1014 | otherwise." | |
1015 | (let ((mount-points | |
1016 | (map user-partition-mount-point user-partitions))) | |
1017 | (or (member "/" mount-points) | |
1018 | (raise | |
1019 | (condition (&no-root-mount-point)))))) | |
1020 | ||
44b2d31c MO |
1021 | (define (set-user-partitions-file-name user-partitions) |
1022 | "Set the partition file-name of <user-partition> records in USER-PARTITIONS | |
1023 | list and return the updated list." | |
69a934f2 MO |
1024 | (map (lambda (p) |
1025 | (let* ((partition (user-partition-parted-object p)) | |
44b2d31c | 1026 | (file-name (partition-get-path partition))) |
69a934f2 MO |
1027 | (user-partition |
1028 | (inherit p) | |
44b2d31c | 1029 | (file-name file-name)))) |
69a934f2 MO |
1030 | user-partitions)) |
1031 | ||
1032 | (define-syntax-rule (with-null-output-ports exp ...) | |
1033 | "Evaluate EXP with both the output port and the error port pointing to the | |
1034 | bit bucket." | |
1035 | (with-output-to-port (%make-void-port "w") | |
1036 | (lambda () | |
1037 | (with-error-to-port (%make-void-port "w") | |
1038 | (lambda () exp ...))))) | |
1039 | ||
1040 | (define (create-ext4-file-system partition) | |
44b2d31c | 1041 | "Create an ext4 file-system for PARTITION file-name." |
69a934f2 MO |
1042 | (with-null-output-ports |
1043 | (invoke "mkfs.ext4" "-F" partition))) | |
1044 | ||
1045 | (define (create-fat32-file-system partition) | |
44b2d31c | 1046 | "Create an ext4 file-system for PARTITION file-name." |
69a934f2 MO |
1047 | (with-null-output-ports |
1048 | (invoke "mkfs.fat" "-F32" partition))) | |
1049 | ||
1050 | (define (create-swap-partition partition) | |
44b2d31c | 1051 | "Set up swap area on PARTITION file-name." |
69a934f2 MO |
1052 | (with-null-output-ports |
1053 | (invoke "mkswap" "-f" partition))) | |
1054 | ||
bf304dbc MO |
1055 | (define (call-with-luks-key-file password proc) |
1056 | "Write PASSWORD in a temporary file and pass it to PROC as argument." | |
1057 | (call-with-temporary-output-file | |
1058 | (lambda (file port) | |
1059 | (put-string port password) | |
1060 | (close port) | |
1061 | (proc file)))) | |
1062 | ||
44b2d31c MO |
1063 | (define (user-partition-upper-file-name user-partition) |
1064 | "Return the file-name of the virtual block device corresponding to | |
1065 | USER-PARTITION if it is encrypted, or the plain file-name otherwise." | |
bf304dbc | 1066 | (let ((crypt-label (user-partition-crypt-label user-partition)) |
44b2d31c | 1067 | (file-name (user-partition-file-name user-partition))) |
bf304dbc MO |
1068 | (if crypt-label |
1069 | (string-append "/dev/mapper/" crypt-label) | |
44b2d31c | 1070 | file-name))) |
bf304dbc MO |
1071 | |
1072 | (define (luks-format-and-open user-partition) | |
5737ba84 | 1073 | "Format and open the encrypted partition pointed by USER-PARTITION." |
44b2d31c | 1074 | (let* ((file-name (user-partition-file-name user-partition)) |
bf304dbc MO |
1075 | (label (user-partition-crypt-label user-partition)) |
1076 | (password (user-partition-crypt-password user-partition))) | |
1077 | (call-with-luks-key-file | |
1078 | password | |
1079 | (lambda (key-file) | |
44b2d31c | 1080 | (system* "cryptsetup" "-q" "luksFormat" file-name key-file) |
bf304dbc | 1081 | (system* "cryptsetup" "open" "--type" "luks" |
44b2d31c | 1082 | "--key-file" key-file file-name label))))) |
bf304dbc MO |
1083 | |
1084 | (define (luks-close user-partition) | |
5737ba84 | 1085 | "Close the encrypted partition pointed by USER-PARTITION." |
bf304dbc MO |
1086 | (let ((label (user-partition-crypt-label user-partition))) |
1087 | (system* "cryptsetup" "close" label))) | |
1088 | ||
69a934f2 MO |
1089 | (define (format-user-partitions user-partitions) |
1090 | "Format the <user-partition> records in USER-PARTITIONS list with | |
1091 | NEED-FORMATING? field set to #t." | |
1092 | (for-each | |
1093 | (lambda (user-partition) | |
85caf5f3 LC |
1094 | (let* ((need-formatting? |
1095 | (user-partition-need-formatting? user-partition)) | |
69a934f2 | 1096 | (type (user-partition-type user-partition)) |
bf304dbc | 1097 | (crypt-label (user-partition-crypt-label user-partition)) |
44b2d31c | 1098 | (file-name (user-partition-upper-file-name user-partition)) |
69a934f2 | 1099 | (fs-type (user-partition-fs-type user-partition))) |
bf304dbc MO |
1100 | (when crypt-label |
1101 | (luks-format-and-open user-partition)) | |
1102 | ||
69a934f2 MO |
1103 | (case fs-type |
1104 | ((ext4) | |
85caf5f3 | 1105 | (and need-formatting? |
69a934f2 | 1106 | (not (eq? type 'extended)) |
44b2d31c | 1107 | (create-ext4-file-system file-name))) |
69a934f2 | 1108 | ((fat32) |
85caf5f3 | 1109 | (and need-formatting? |
69a934f2 | 1110 | (not (eq? type 'extended)) |
44b2d31c | 1111 | (create-fat32-file-system file-name))) |
69a934f2 | 1112 | ((swap) |
44b2d31c | 1113 | (create-swap-partition file-name)) |
69a934f2 MO |
1114 | (else |
1115 | ;; TODO: Add support for other file-system types. | |
1116 | #t)))) | |
1117 | user-partitions)) | |
1118 | ||
1119 | (define (sort-partitions user-partitions) | |
1120 | "Sort USER-PARTITIONS by mount-points, so that the more nested mount-point | |
1121 | comes last. This is useful to mount/umount partitions in a coherent order." | |
1122 | (sort user-partitions | |
1123 | (lambda (a b) | |
1124 | (let ((mount-point-a (user-partition-mount-point a)) | |
1125 | (mount-point-b (user-partition-mount-point b))) | |
1126 | (string-prefix? mount-point-a mount-point-b))))) | |
1127 | ||
1128 | (define (mount-user-partitions user-partitions) | |
1129 | "Mount the <user-partition> records in USER-PARTITIONS list on their | |
b624206d | 1130 | respective mount-points." |
69a934f2 MO |
1131 | (let* ((mount-partitions (filter user-partition-mount-point user-partitions)) |
1132 | (sorted-partitions (sort-partitions mount-partitions))) | |
1133 | (for-each (lambda (user-partition) | |
1134 | (let* ((mount-point | |
1135 | (user-partition-mount-point user-partition)) | |
1136 | (target | |
1137 | (string-append (%installer-target-dir) | |
1138 | mount-point)) | |
1139 | (fs-type | |
1140 | (user-partition-fs-type user-partition)) | |
bf304dbc MO |
1141 | (crypt-label |
1142 | (user-partition-crypt-label user-partition)) | |
69a934f2 MO |
1143 | (mount-type |
1144 | (user-fs-type->mount-type fs-type)) | |
44b2d31c MO |
1145 | (file-name |
1146 | (user-partition-upper-file-name user-partition))) | |
b624206d | 1147 | (mkdir-p target) |
44b2d31c | 1148 | (mount file-name target mount-type))) |
69a934f2 MO |
1149 | sorted-partitions))) |
1150 | ||
1151 | (define (umount-user-partitions user-partitions) | |
b624206d | 1152 | "Unmount all the <user-partition> records in USER-PARTITIONS list." |
69a934f2 MO |
1153 | (let* ((mount-partitions (filter user-partition-mount-point user-partitions)) |
1154 | (sorted-partitions (sort-partitions mount-partitions))) | |
1155 | (for-each (lambda (user-partition) | |
1156 | (let* ((mount-point | |
1157 | (user-partition-mount-point user-partition)) | |
bf304dbc MO |
1158 | (crypt-label |
1159 | (user-partition-crypt-label user-partition)) | |
69a934f2 MO |
1160 | (target |
1161 | (string-append (%installer-target-dir) | |
1162 | mount-point))) | |
bf304dbc MO |
1163 | (umount target) |
1164 | (when crypt-label | |
1165 | (luks-close user-partition)))) | |
69a934f2 MO |
1166 | (reverse sorted-partitions)))) |
1167 | ||
b624206d MO |
1168 | (define (find-swap-user-partitions user-partitions) |
1169 | "Return the subset of <user-partition> records in USER-PARTITIONS list with | |
1170 | the FS-TYPE field set to 'swap, return the empty list if none found." | |
1171 | (filter (lambda (user-partition) | |
44b2d31c MO |
1172 | (let ((fs-type (user-partition-fs-type user-partition))) |
1173 | (eq? fs-type 'swap))) | |
1174 | user-partitions)) | |
b624206d MO |
1175 | |
1176 | (define (start-swapping user-partitions) | |
1177 | "Start swaping on <user-partition> records with FS-TYPE equal to 'swap." | |
1178 | (let* ((swap-user-partitions (find-swap-user-partitions user-partitions)) | |
44b2d31c | 1179 | (swap-devices (map user-partition-file-name swap-user-partitions))) |
b624206d MO |
1180 | (for-each swapon swap-devices))) |
1181 | ||
1182 | (define (stop-swapping user-partitions) | |
1183 | "Stop swaping on <user-partition> records with FS-TYPE equal to 'swap." | |
1184 | (let* ((swap-user-partitions (find-swap-user-partitions user-partitions)) | |
44b2d31c | 1185 | (swap-devices (map user-partition-file-name swap-user-partitions))) |
b624206d MO |
1186 | (for-each swapoff swap-devices))) |
1187 | ||
69a934f2 | 1188 | (define-syntax-rule (with-mounted-partitions user-partitions exp ...) |
b624206d | 1189 | "Mount USER-PARTITIONS and start swapping within the dynamic extent of EXP." |
69a934f2 MO |
1190 | (dynamic-wind |
1191 | (lambda () | |
b624206d MO |
1192 | (mount-user-partitions user-partitions) |
1193 | (start-swapping user-partitions)) | |
69a934f2 MO |
1194 | (lambda () |
1195 | exp ...) | |
1196 | (lambda () | |
1197 | (umount-user-partitions user-partitions) | |
b624206d | 1198 | (stop-swapping user-partitions) |
69a934f2 MO |
1199 | #f))) |
1200 | ||
1201 | (define (user-partition->file-system user-partition) | |
1202 | "Convert the given USER-PARTITION record in a FILE-SYSTEM record from | |
1203 | (gnu system file-systems) module and return it." | |
1204 | (let* ((mount-point (user-partition-mount-point user-partition)) | |
1205 | (fs-type (user-partition-fs-type user-partition)) | |
bf304dbc | 1206 | (crypt-label (user-partition-crypt-label user-partition)) |
69a934f2 | 1207 | (mount-type (user-fs-type->mount-type fs-type)) |
44b2d31c MO |
1208 | (file-name (user-partition-file-name user-partition)) |
1209 | (upper-file-name (user-partition-upper-file-name user-partition)) | |
59e8f3c3 MO |
1210 | ;; Only compute uuid if partition is not encrypted. |
1211 | (uuid (or crypt-label | |
44b2d31c | 1212 | (uuid->string (read-partition-uuid file-name) fs-type)))) |
69a934f2 MO |
1213 | `(file-system |
1214 | (mount-point ,mount-point) | |
bf304dbc | 1215 | (device ,@(if crypt-label |
44b2d31c | 1216 | `(,upper-file-name) |
bf304dbc MO |
1217 | `((uuid ,uuid (quote ,fs-type))))) |
1218 | (type ,mount-type) | |
1219 | ,@(if crypt-label | |
1220 | '((dependencies mapped-devices)) | |
1221 | '())))) | |
69a934f2 MO |
1222 | |
1223 | (define (user-partitions->file-systems user-partitions) | |
1224 | "Convert the given USER-PARTITIONS list of <user-partition> records into a | |
1225 | list of <file-system> records." | |
1226 | (filter-map | |
1227 | (lambda (user-partition) | |
1228 | (let ((mount-point | |
1229 | (user-partition-mount-point user-partition))) | |
1230 | (and mount-point | |
1231 | (user-partition->file-system user-partition)))) | |
1232 | user-partitions)) | |
1233 | ||
bf304dbc MO |
1234 | (define (user-partition->mapped-device user-partition) |
1235 | "Convert the given USER-PARTITION record into a MAPPED-DEVICE record | |
1236 | from (gnu system mapped-devices) and return it." | |
1237 | (let ((label (user-partition-crypt-label user-partition)) | |
44b2d31c | 1238 | (file-name (user-partition-file-name user-partition))) |
bf304dbc | 1239 | `(mapped-device |
59e8f3c3 | 1240 | (source (uuid ,(uuid->string |
44b2d31c | 1241 | (read-luks-partition-uuid file-name) |
59e8f3c3 | 1242 | 'luks))) |
bf304dbc MO |
1243 | (target ,label) |
1244 | (type luks-device-mapping)))) | |
1245 | ||
69a934f2 MO |
1246 | (define (bootloader-configuration user-partitions) |
1247 | "Return the bootloader configuration field for USER-PARTITIONS." | |
1248 | (let* ((root-partition | |
1249 | (find (lambda (user-partition) | |
1250 | (let ((mount-point | |
1251 | (user-partition-mount-point user-partition))) | |
1252 | (and mount-point | |
1253 | (string=? mount-point "/")))) | |
1254 | user-partitions)) | |
44b2d31c | 1255 | (root-partition-disk (user-partition-disk-file-name root-partition))) |
69a934f2 MO |
1256 | `((bootloader-configuration |
1257 | ,@(if (efi-installation?) | |
1258 | `((bootloader grub-efi-bootloader) | |
1259 | (target ,(default-esp-mount-point))) | |
1260 | `((bootloader grub-bootloader) | |
1261 | (target ,root-partition-disk))))))) | |
1262 | ||
1263 | (define (user-partitions->configuration user-partitions) | |
1264 | "Return the configuration field for USER-PARTITIONS." | |
1265 | (let* ((swap-user-partitions (find-swap-user-partitions user-partitions)) | |
44b2d31c | 1266 | (swap-devices (map user-partition-file-name swap-user-partitions)) |
5737ba84 | 1267 | (encrypted-partitions |
bf304dbc | 1268 | (filter user-partition-crypt-label user-partitions))) |
69a934f2 MO |
1269 | `(,@(if (null? swap-devices) |
1270 | '() | |
1271 | `((swap-devices (list ,@swap-devices)))) | |
1272 | (bootloader ,@(bootloader-configuration user-partitions)) | |
5737ba84 | 1273 | ,@(if (null? encrypted-partitions) |
bf304dbc MO |
1274 | '() |
1275 | `((mapped-devices | |
1276 | (list ,@(map user-partition->mapped-device | |
5737ba84 | 1277 | encrypted-partitions))))) |
69a934f2 MO |
1278 | (file-systems (cons* |
1279 | ,@(user-partitions->file-systems user-partitions) | |
1280 | %base-file-systems))))) | |
1281 | ||
1282 | \f | |
1283 | ;; | |
1284 | ;; Initialization. | |
1285 | ;; | |
1286 | ||
1287 | (define (init-parted) | |
1288 | "Initialize libparted support." | |
1289 | (probe-all-devices) | |
1290 | (exception-set-handler (lambda (exception) | |
1291 | EXCEPTION-OPTION-UNHANDLED))) | |
1292 | ||
1293 | (define (free-parted devices) | |
1294 | "Deallocate memory used for DEVICES in parted, force sync them and wait for | |
1295 | the devices not to be used before returning." | |
85caf5f3 | 1296 | ;; XXX: Formatting and further operations on disk partition table may fail |
69a934f2 MO |
1297 | ;; because the partition table changes are not synced, or because the device |
1298 | ;; is still in use, even if parted should have finished editing | |
1299 | ;; partitions. This is not well understood, but syncing devices and waiting | |
1300 | ;; them to stop returning EBUSY to BLKRRPART ioctl seems to be enough. The | |
1301 | ;; same kind of issue is described here: | |
1302 | ;; https://mail.gnome.org/archives/commits-list/2013-March/msg18423.html. | |
44b2d31c | 1303 | (let ((device-file-names (map device-path devices))) |
69a934f2 MO |
1304 | (for-each force-device-sync devices) |
1305 | (free-all-devices) | |
44b2d31c MO |
1306 | (for-each (lambda (file-name) |
1307 | (let ((in-use? (with-delay-device-in-use? file-name))) | |
69a934f2 MO |
1308 | (and in-use? |
1309 | (error | |
1310 | (format #f (G_ "Device ~a is still in use.") | |
44b2d31c MO |
1311 | file-name))))) |
1312 | device-file-names))) |