aboutsummaryrefslogtreecommitdiff
path: root/gnu/installer/newt/partition.scm
blob: e7a97810ac6081cf7d52395e3c2999f8472e5e62 (about) (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2018, 2019 Mathieu Othacehe <m.othacehe@gmail.com>
;;; Copyright © 2019, 2020 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2020 Tobias Geerinckx-Rice <me@tobias.gr>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.

(define-module (gnu installer newt partition)
  #:use-module (gnu installer parted)
  #:use-module (gnu installer steps)
  #:use-module (gnu installer utils)
  #:use-module (gnu installer newt page)
  #:use-module (gnu installer newt utils)
  #:use-module (guix i18n)
  #:use-module (ice-9 format)
  #:use-module (ice-9 match)
  #:use-module (srfi srfi-1)
  #:use-module (srfi srfi-26)
  #:use-module (srfi srfi-34)
  #:use-module (srfi srfi-35)
  #:use-module (newt)
  #:use-module (parted)
  #:export (run-partitioning-page))

(define (button-exit-action)
  "Abort the installer step."
  (abort-to-prompt 'installer-step 'abort))

(define (run-scheme-page)
  "Run a page asking the user for a partitioning scheme."
  (let* ((items
          `((root . ,(G_ "Everything is one partition"))
            (root-home . ,(G_ "Separate /home partition"))))
         (result (run-listbox-selection-page
                  #:info-text (G_ "Please select a partitioning scheme.")
                  #:title (G_ "Partition scheme")
                  #:listbox-items items
                  #:listbox-item->text cdr
                  #:listbox-height 4
                  #:sort-listbox-items? #f       ;keep the 'root' option first
                  #:button-text (G_ "Exit")
                  #:button-callback-procedure button-exit-action)))
    (car result)))

(define (draw-formatting-page partitions)
  "Draw a page asking for confirmation, and then indicating that partitions
are being formatted."
  ;; TRANSLATORS: The ~{ and ~} format specifiers are used to iterate the list
  ;; of device names of the user partitions that will be formatted.
  (run-confirmation-page (format #f (G_ "We are about to write the configured \
partition table to the disk and format the partitions listed below.  Their \
data will be lost.  Do you wish to continue?~%~%~{ - ~a~%~}")
                                 (map user-partition-file-name
                                      (filter user-partition-need-formatting?
                                              partitions)))
                         (G_ "Format disk?")
                         #:exit-button-procedure button-exit-action)
  (draw-info-page
   (format #f (G_ "Partition formatting is in progress, please wait."))
   (G_ "Preparing partitions")))

(define (run-device-page devices)
  "Run a page asking the user to select a device among those in the given
DEVICES list."
  (define (device-items)
    (map (lambda (device)
           `(,device . ,(device-description device)))
         devices))

  (let* ((result (run-listbox-selection-page
                  #:info-text (G_ "Please select a \
disk.  The installation device as well as the small devices are filtered.")
                  #:title (G_ "Disk")
                  #:listbox-items (device-items)
                  #:listbox-item->text cdr
                  #:listbox-height 10
                  #:button-text (G_ "Exit")
                  #:button-callback-procedure button-exit-action))
         (device (car result)))
    device))

(define (run-label-page button-text button-callback)
  "Run a page asking the user to select a partition table label."
  ;; Force the GPT label if UEFI is supported.
  (if (efi-installation?)
      "gpt"
      (run-listbox-selection-page
       #:info-text (G_ "Select a new partition table type. \
Be careful, all data on the disk will be lost.")
       #:title (G_ "Partition table")
       #:listbox-items '("msdos" "gpt")
       #:listbox-item->text identity
       #:button-text button-text
       #:button-callback-procedure button-callback)))

(define (run-type-page partition)
  "Run a page asking the user to select a partition type."
  (let* ((disk (partition-disk partition))
         (partitions (disk-partitions disk))
         (other-extended-partitions?
          (any extended-partition? partitions))
         (items
          `(normal ,@(if other-extended-partitions?
                         '()
                         '(extended)))))
    (run-listbox-selection-page
     #:info-text (G_ "Please select a partition type.")
     #:title (G_ "Partition type")
     #:listbox-items items
     #:listbox-item->text symbol->string
     #:sort-listbox-items? #f
     #:button-text (G_ "Exit")
     #:button-callback-procedure button-exit-action)))

(define (run-fs-type-page)
  "Run a page asking the user to select a file-system type."
  (run-listbox-selection-page
   #:info-text (G_ "Please select the file-system type for this partition.")
   #:title (G_ "File-system type")
   #:listbox-items '(btrfs ext4 jfs xfs
                           swap
                           ;; These lack basic Unix features.  Their only use
                           ;; on GNU is for interoperation, e.g., with UEFI.
                           fat32 fat16 ntfs)
   #:listbox-item->text user-fs-type-name
   #:sort-listbox-items? #f
   #:button-text (G_ "Exit")
   #:button-callback-procedure button-exit-action))

(define (inform-can-create-partition? user-partition)
  "Return #t if it is possible to create USER-PARTITION. This is determined by
calling CAN-CREATE-PARTITION? procedure. If an exception is raised, catch it
an inform the user with an appropriate error-page and return #f."
  (guard (c ((max-primary-exceeded? c)
            (run-error-page
             (G_ "Primary partitions count exceeded.")
             (G_ "Creation error"))
            #f)
           ((extended-creation-error? c)
            (run-error-page
             (G_ "Extended partition creation error.")
             (G_ "Creation error"))
            #f)
           ((logical-creation-error? c)
            (run-error-page
             (G_ "Logical partition creation error.")
             (G_ "Creation error"))
            #f))
    (can-create-partition? user-partition)))

(define (prompt-luks-passwords user-partitions)
  "Prompt for the luks passwords of the encrypted partitions in
USER-PARTITIONS list. Return this list with password fields filled-in."
  (map (lambda (user-part)
         (let* ((crypt-label (user-partition-crypt-label user-part))
                (file-name (user-partition-file-name user-part))
                (password-page
                 (lambda ()
                   (run-input-page
                    (format #f (G_ "Please enter the password for the \
encryption of partition ~a (label: ~a).") file-name crypt-label)
                    (G_ "Password required")
                    #:input-visibility-checkbox? #t)))
                (password-confirm-page
                 (lambda ()
                   (run-input-page
                    (format #f (G_ "Please confirm the password for the \
encryption of partition ~a (label: ~a).") file-name crypt-label)
                    (G_ "Password confirmation required")
                    #:input-visibility-checkbox? #t))))
           (if crypt-label
               (let loop ()
                 (let ((password (password-page))
                       (confirmation (password-confirm-page)))
                   (if (string=? password confirmation)
                       (user-partition
                        (inherit user-part)
                        (crypt-password password))
                       (begin
                         (run-error-page
                          (G_ "Password mismatch, please try again.")
                          (G_ "Password error"))
                         (loop)))))
               user-part)))
       user-partitions))

(define* (run-partition-page target-user-partition
                             #:key
                             (default-item #f))
  "Run a page allowing the user to edit the given TARGET-USER-PARTITION
record. If the argument DEFAULT-ITEM is passed, use it to select the current
listbox item. This is used to avoid the focus to switch back to the first
listbox entry while calling this procedure recursively."

  (define (numeric-size device size)
    "Parse the given SIZE on DEVICE and return it."
    (call-with-values
        (lambda ()
          (unit-parse size device))
      (lambda (value range)
        value)))

  (define (numeric-size-range device size)
    "Parse the given SIZE on DEVICE and return the associated RANGE."
    (call-with-values
        (lambda ()
          (unit-parse size device))
      (lambda (value range)
        range)))

  (define* (fill-user-partition-geom user-part
                                     #:key
                                     device (size #f) start end)
    "Return the given USER-PART with the START, END and SIZE fields set to the
eponym arguments. Use UNIT-FORMAT-CUSTOM to format START and END arguments as
sectors on DEVICE."
    (user-partition
     (inherit user-part)
     (size size)
     (start (unit-format-custom device start UNIT-SECTOR))
     (end (unit-format-custom device end UNIT-SECTOR))))

  (define (apply-user-partition-changes user-part)
    "Set the name, file-system type and boot flag on the partition specified
by USER-PART, if it is applicable for the partition type."
    (let* ((partition (user-partition-parted-object user-part))
           (disk (partition-disk partition))
           (disk-type (disk-disk-type disk))
           (device (disk-device disk))
           (has-name? (disk-type-check-feature
                       disk-type
                       DISK-TYPE-FEATURE-PARTITION-NAME))
           (name (user-partition-name user-part))
           (fs-type (filesystem-type-get
                     (user-fs-type-name
                      (user-partition-fs-type user-part))))
           (bootable? (user-partition-bootable? user-part))
           (esp? (user-partition-esp? user-part))
           (flag-bootable?
            (partition-is-flag-available? partition PARTITION-FLAG-BOOT))
           (flag-esp?
            (partition-is-flag-available? partition PARTITION-FLAG-ESP)))
      (when (and has-name? name)
        (partition-set-name partition name))
      (partition-set-system partition fs-type)
      (when flag-bootable?
        (partition-set-flag partition
                            PARTITION-FLAG-BOOT
                            (if bootable? 1 0)))
      (when flag-esp?
        (partition-set-flag partition
                            PARTITION-FLAG-ESP
                            (if esp? 1 0)))
      #t))

  (define (listbox-action listbox-item)
    (let* ((item (car listbox-item))
           (partition (user-partition-parted-object
                       target-user-partition))
           (disk (partition-disk partition))
           (device (disk-device disk)))
      (list
       item
       (case item
         ((name)
          (let* ((old-name (user-partition-name target-user-partition))
                 (name
                  (run-input-page (G_ "Please enter the partition gpt name.")
                                  (G_ "Partition name")
                                  #:default-text old-name)))
            (user-partition
             (inherit target-user-partition)
             (name name))))
         ((type)
          (let ((new-type (run-type-page partition)))
            (user-partition
             (inherit target-user-partition)
             (type new-type))))
         ((bootable)
          (user-partition
           (inherit target-user-partition)
           (bootable? (not (user-partition-bootable?
                            target-user-partition)))))
         ((esp?)
          (let ((new-esp? (not (user-partition-esp?
                                target-user-partition))))
            (user-partition
             (inherit target-user-partition)
             (esp? new-esp?)
             (mount-point (if new-esp?
                              (default-esp-mount-point)
                              "")))))
         ((crypt-label)
          (let* ((label (user-partition-crypt-label
                         target-user-partition))
                 (new-label
                  (and (not label)
                       (run-input-page
                        (G_ "Please enter the encrypted label")
                        (G_ "Encryption label")))))
            (user-partition
             (inherit target-user-partition)
             (need-formatting? #t)
             (crypt-label new-label))))
         ((need-formatting?)
          (user-partition
           (inherit target-user-partition)
           (need-formatting?
            (not (user-partition-need-formatting?
                  target-user-partition)))))
         ((size)
          (let* ((old-size (user-partition-size target-user-partition))
                 (max-size-value (partition-length partition))
                 (max-size (unit-format device max-size-value))
                 (start (partition-start partition))
                 (size (run-input-page
                        (format #f (G_ "Please enter the size of the partition.\
 The maximum size is ~a.") max-size)
                        (G_ "Partition size")
                        #:default-text (or old-size max-size)))
                 (size-percentage (read-percentage size))
                 (size-value (if size-percentage
                                 (nearest-exact-integer
                                  (/ (* max-size-value size-percentage)
                                     100))
                                 (numeric-size device size)))
                 (end (and size-value
                           (+ start size-value)))
                 (size-range (numeric-size-range device size))
                 (size-range-ok? (and size-range
                                      (< (+ start
                                            (geometry-start size-range))
                                         (partition-end partition)))))
            (cond
             ((and size-percentage (> size-percentage 100))
              (run-error-page
               (G_ "The percentage can not be superior to 100.")
               (G_ "Size error"))
              target-user-partition)
             ((not size-value)
              (run-error-page
               (G_ "The requested size is incorrectly formatted, or too large.")
               (G_ "Size error"))
              target-user-partition)
             ((not (or size-percentage size-range-ok?))
              (run-error-page
               (G_ "The request size is superior to the maximum size.")
               (G_ "Size error"))
              target-user-partition)
             (else
              (fill-user-partition-geom target-user-partition
                                        #:device device
                                        #:size size
                                        #:start start
                                        #:end end)))))
         ((fs-type)
          (let ((fs-type (run-fs-type-page)))
            (user-partition
             (inherit target-user-partition)
             (fs-type fs-type))))
         ((mount-point)
          (let* ((old-mount (or (user-partition-mount-point
                                 target-user-partition)
                                ""))
                 (mount
                  (run-input-page
                   (G_ "Please enter the desired mounting point for this \
partition. Leave this field empty if you don't want to set a mounting point.")
                   (G_ "Mounting point")
                   #:default-text old-mount
                   #:allow-empty-input? #t)))
            (user-partition
             (inherit target-user-partition)
             (mount-point (and (not (string=? mount ""))
                               mount)))))))))

  (define (button-action)
    (let* ((partition (user-partition-parted-object
                       target-user-partition))
           (prev-part (partition-prev partition))
           (disk (partition-disk partition))
           (device (disk-device disk))
           (creation? (freespace-partition? partition))
           (start (partition-start partition))
           (end (partition-end partition))
           (new-user-partition
            (if (user-partition-start target-user-partition)
                target-user-partition
                (fill-user-partition-geom target-user-partition
                                          #:device device
                                          #:start start
                                          #:end end))))
      ;; It the backend PARTITION has free-space type, it means we are
      ;; creating a new partition, otherwise, we are editing an already
      ;; existing PARTITION.
      (if creation?
          (let* ((ok-create-partition?
                  (inform-can-create-partition? new-user-partition))
                 (new-partition
                  (and ok-create-partition?
                       (mkpart disk
                               new-user-partition
                               #:previous-partition prev-part))))
            (and new-partition
                 (user-partition
                  (inherit new-user-partition)
                  (need-formatting? #t)
                  (file-name (partition-get-path new-partition))
                  (disk-file-name (device-path device))
                  (parted-object new-partition))))
          (and (apply-user-partition-changes new-user-partition)
               new-user-partition))))

  (let* ((items (user-partition-description target-user-partition))
         (partition (user-partition-parted-object
                     target-user-partition))
         (disk (partition-disk partition))
         (device (disk-device disk))
         (file-name (device-path device))
         (number-str (partition-print-number partition))
         (type (user-partition-type target-user-partition))
         (type-str (symbol->string type))
         (start (unit-format device (partition-start partition)))
         (creation? (freespace-partition? partition))
         (default-item (and default-item
                            (find (lambda (item)
                                    (eq? (car item) default-item))
                                  items)))
         (result
          (run-listbox-selection-page
           #:info-text
           (if creation?
               (format #f (G_ "Creating ~a partition starting at ~a of ~a.")
                       type-str start file-name)
               (format #f (G_ "You are currently editing partition ~a.")
                       number-str))
           #:title (if creation?
                       (G_ "Partition creation")
                       (G_ "Partition edit"))
           #:listbox-items items
           #:listbox-item->text cdr
           #:sort-listbox-items? #f
           #:listbox-default-item default-item
           #:button-text (G_ "OK")
           #:listbox-callback-procedure listbox-action
           #:button-callback-procedure button-action)))
    (match result
      ((item new-user-partition)
       (run-partition-page new-user-partition
                           #:default-item item))
      (else result))))

(define* (run-disk-page disks
                        #:optional (user-partitions '())
                        #:key (guided? #f))
  "Run a page allowing to edit the partition tables of the given DISKS. If
specified, USER-PARTITIONS is a list of <user-partition> records associated to
the partitions on DISKS."

  (define (other-logical-partitions? partitions)
    "Return #t if at least one of the partition in PARTITIONS list is a
logical partition, return #f otherwise."
    (any logical-partition? partitions))

  (define (other-non-logical-partitions? partitions)
    "Return #t is at least one of the partitions in PARTITIONS list is not a
logical partition, return #f otherwise."
    (let ((non-logical-partitions
           (remove logical-partition? partitions)))
      (or (any normal-partition? non-logical-partitions)
          (any freespace-partition? non-logical-partitions))))

  (define (add-tree-symbols partitions descriptions)
    "Concatenate tree symbols to the given DESCRIPTIONS list and return
it. The PARTITIONS list is the list of partitions described in
DESCRIPTIONS. The tree symbols are used to indicate the partition's disk and
for logical partitions, the extended partition which includes them."
    (match descriptions
      (() '())
      ((description . rest-descriptions)
       (match partitions
         ((partition . rest-partitions)
          (if (null? rest-descriptions)
              (list (if (logical-partition? partition)
                        (string-append " ┗━ " description)
                        (string-append "┗━  " description)))
              (cons (cond
                     ((extended-partition? partition)
                      (if (other-non-logical-partitions? rest-partitions)
                          (string-append "┣┳  " description)
                          (string-append "┗┳  " description)))
                     ((logical-partition? partition)
                      (if (other-logical-partitions? rest-partitions)
                          (if (other-non-logical-partitions? rest-partitions)
                              (string-append "┃┣━ " description)
                              (string-append " ┣━ " description))
                          (if (other-non-logical-partitions? rest-partitions)
                              (string-append "┃┗━ " description)
                              (string-append " ┗━ " description))))
                     (else
                      (string-append "┣━  " description)))
                    (add-tree-symbols rest-partitions
                                      rest-descriptions))))))))

  (define (skip-item? item)
    (eq? (car item) 'skip))

  (define (disk-items)
    "Return the list of strings describing DISKS."
    (let loop ((disks disks))
      (match disks
        (() '())
        ((disk . rest)
         (let* ((device (disk-device disk))
                (partitions (disk-partitions disk))
                (partitions*
                 (filter-map
                  (lambda (partition)
                    (and (not (metadata-partition? partition))
                         (not (small-freespace-partition? device
                                                          partition))
                         partition))
                  partitions))
                (descriptions (add-tree-symbols
                               partitions*
                               (partitions-descriptions partitions*
                                                        user-partitions)))
                (partition-items (map cons partitions* descriptions)))
           (append
            `((,disk . ,(device-description device disk))
              ,@partition-items
              ,@(if (null? rest)
                    '()
                    '((skip . ""))))
            (loop rest)))))))

  (define (remove-user-partition-by-partition user-partitions partition)
    "Return the USER-PARTITIONS list with the record with the given PARTITION
object removed. If PARTITION is an extended partition, also remove all logical
partitions from USER-PARTITIONS."
    (remove (lambda (p)
              (let ((cur-partition (user-partition-parted-object p)))
                (or (equal? cur-partition partition)
                    (and (extended-partition? partition)
                         (logical-partition? cur-partition)))))
            user-partitions))

  (define (remove-user-partition-by-disk user-partitions disk)
    "Return the USER-PARTITIONS list with the <user-partition> records located
on given DISK removed."
    (remove (lambda (p)
              (let* ((partition (user-partition-parted-object p))
                     (cur-disk (partition-disk partition)))
                (equal? cur-disk disk)))
            user-partitions))

  (define (update-user-partitions user-partitions new-user-partition)
    "Update or insert NEW-USER-PARTITION record in USER-PARTITIONS list
depending if one of the <user-partition> record in USER-PARTITIONS has the
same PARTITION object as NEW-USER-PARTITION."
    (let* ((partition (user-partition-parted-object new-user-partition))
           (user-partitions*
            (remove-user-partition-by-partition user-partitions
                                                partition)))
      (cons new-user-partition user-partitions*)))

  (define (button-ok-action)
    "Commit the modifications to all DISKS and return #t."
    (for-each (lambda (disk)
                (disk-commit disk))
              disks)
    #t)

  (define (listbox-action listbox-item)
    "A disk or a partition has been selected. If it's a disk, ask for a label
to create a new partition table. If it is a partition, propose the user to
edit it."
    (let ((item (car listbox-item)))
      (cond
       ((disk? item)
        (let ((label (run-label-page (G_ "Back") (const #f))))
          (if label
              (let* ((device (disk-device item))
                     (new-disk (mklabel device label))
                     (commit-new-disk (disk-commit new-disk))
                     (other-disks (remove (lambda (disk)
                                            (equal? disk item))
                                          disks))
                     (new-user-partitions
                      (remove-user-partition-by-disk user-partitions item)))
                `((disks . ,(cons new-disk other-disks))
                  (user-partitions . ,new-user-partitions)))
              `((disks . ,disks)
                (user-partitions . ,user-partitions)))))
       ((partition? item)
        (let* ((partition item)
               (disk (partition-disk partition))
               (device (disk-device disk))
               (existing-user-partition
                (find-user-partition-by-parted-object user-partitions
                                                      partition))
               (edit-user-partition
                (or existing-user-partition
                    (partition->user-partition partition))))
          `((disks . ,disks)
            (user-partitions . ,user-partitions)
            (edit-user-partition . ,edit-user-partition)))))))

  (define (hotkey-action key listbox-item)
    "The DELETE key has been pressed on a disk or a partition item."
    (let ((item (car listbox-item))
          (default-result
            `((disks . ,disks)
              (user-partitions . ,user-partitions))))
      (cond
       ((disk? item)
        (let* ((device (disk-device item))
               (file-name (device-path device))
               (info-text
                (format #f (G_ "Are you sure you want to delete everything on disk ~a?")
                        file-name))
               (result (choice-window (G_ "Delete disk")
                                      (G_ "OK")
                                      (G_ "Exit")
                                      info-text)))
          (case result
            ((1)
             (disk-remove-all-partitions item)
             `((disks . ,disks)
               (user-partitions
                . ,(remove-user-partition-by-disk user-partitions item))))
            (else
             default-result))))
       ((partition? item)
        (if (freespace-partition? item)
            (begin
              (run-error-page (G_ "You cannot delete a free space area.")
                              (G_ "Delete partition"))
              default-result)
            (let* ((disk (partition-disk item))
                   (number-str (partition-print-number item))
                   (info-text
                    (format #f (G_ "Are you sure you want to delete partition ~a?")
                            number-str))
                   (result (choice-window (G_ "Delete partition")
                                          (G_ "OK")
                                          (G_ "Exit")
                                          info-text)))
              (case result
                ((1)
                 (let ((new-user-partitions
                        (remove-user-partition-by-partition user-partitions
                                                            item)))
                   (disk-remove-partition* disk item)
                   `((disks . ,disks)
                     (user-partitions . ,new-user-partitions))))
                (else
                 default-result))))))))

  (let* ((info-text (G_ "You can change a disk's partition table by \
selecting it and pressing ENTER. You can also edit a partition by selecting it \
and pressing ENTER, or remove it by pressing DELETE. To create a new \
partition, select a free space area and press ENTER.

At least one partition must have its mounting point set to '/'."))
         (guided-info-text (format #f (G_ "This is the proposed \
partitioning. It is still possible to edit it or to go back to install menu \
by pressing the Exit button.~%~%")))
         (result
          (run-listbox-selection-page
           #:info-text (if guided?
                           (string-append guided-info-text info-text)
                           info-text)

          #:title (if guided?
                      (G_ "Guided partitioning")
                      (G_ "Manual partitioning"))
          #:info-textbox-width 76         ;we need a lot of room for INFO-TEXT
          #:listbox-height (max 5 (- (screen-rows) 30))
          #:listbox-items (disk-items)
          #:listbox-item->text cdr
          #:sort-listbox-items? #f
          #:skip-item-procedure? skip-item?
          #:allow-delete? #t
          #:button-text (G_ "OK")
          #:button-callback-procedure button-ok-action

          ;; Consider client replies equivalent to hitting the "OK" button.
          ;; XXX: In practice this means that clients cannot do anything but
          ;; approve the predefined list of partitions.
          #:client-callback-procedure (lambda (_) (button-ok-action))

          #:button2-text (G_ "Exit")
          #:button2-callback-procedure button-exit-action
          #:listbox-callback-procedure listbox-action
          #:hotkey-callback-procedure hotkey-action)))
    (if (eq? result #t)
        (let ((user-partitions-ok?
               (guard
                   (c ((no-root-mount-point? c)
                       (run-error-page
                        (G_ "No root mount point found.")
                        (G_ "Missing mount point"))
                       #f)
                      ((cannot-read-uuid? c)
                       (run-error-page
                        (format #f (G_ "Cannot read the ~a partition UUID.\
 You may need to format it.")
                                (cannot-read-uuid-partition c))
                        (G_ "Wrong partition format"))
                       #f))
                 (check-user-partitions user-partitions))))
          (if user-partitions-ok?
              user-partitions
              (run-disk-page disks user-partitions
                             #:guided? guided?)))
        (let* ((result-disks (assoc-ref result 'disks))
               (result-user-partitions (assoc-ref result
                                                  'user-partitions))
               (edit-user-partition (assoc-ref result
                                               'edit-user-partition))
               (can-create-partition?
                (and edit-user-partition
                     (inform-can-create-partition? edit-user-partition)))
               (new-user-partition (and edit-user-partition
                                        can-create-partition?
                                        (run-partition-page
                                         edit-user-partition)))
               (new-user-partitions
                (if new-user-partition
                    (update-user-partitions result-user-partitions
                                            new-user-partition)
                    result-user-partitions)))
          (run-disk-page result-disks new-user-partitions
                         #:guided? guided?)))))

(define (run-partitioning-page)
  "Run a page asking the user for a partitioning method."
  (define (run-page devices)
    (let* ((items
            `((entire . ,(G_ "Guided - using the entire disk"))
              (entire-encrypted . ,(G_ "Guided - using the entire disk with encryption"))
              (manual . ,(G_ "Manual"))))
           (result (run-listbox-selection-page
                    #:info-text (G_ "Please select a partitioning method.")
                    #:title (G_ "Partitioning method")
                    #:listbox-height (+ (length items) 2)
                    #:listbox-items items
                    #:listbox-item->text cdr
                    #:sort-listbox-items? #f
                    #:button-text (G_ "Exit")
                    #:button-callback-procedure button-exit-action))
           (method (car result)))
      (cond
       ((or (eq? method 'entire)
            (eq? method 'entire-encrypted))
         (let* ((device (run-device-page devices))
                (disk-type (disk-probe device))
                (disk (if disk-type
                          (disk-new device)
                          (let* ((label (run-label-page
                                         (G_ "Exit")
                                         button-exit-action))
                                 (disk (mklabel device label)))
                            (disk-commit disk)
                            disk)))
                (scheme (symbol-append method '- (run-scheme-page)))
                (user-partitions (auto-partition! disk #:scheme scheme)))
           (run-disk-page (list disk) user-partitions
                          #:guided? #t)))
       ((eq? method 'manual)
         (let* ((disks (filter-map disk-new devices))
                (user-partitions (append-map
                                  create-special-user-partitions
                                  (map disk-partitions disks)))
                (result-user-partitions (run-disk-page disks
                                                       user-partitions)))
           result-user-partitions)))))

  (init-parted)
  (let* ((eligible-devices (eligible-devices))
         (user-partitions (run-page eligible-devices))
         (user-partitions-with-pass (prompt-luks-passwords
                                     user-partitions))
         (form (draw-formatting-page user-partitions)))
    ;; Make sure the disks are not in use before proceeding to formatting.
    (free-parted eligible-devices)
    (format-user-partitions user-partitions-with-pass)
    (installer-log-line "formatted ~a user partitions"
            (length user-partitions-with-pass))
    (installer-log-line "user-partitions: ~a" user-partitions)

    (destroy-form-and-pop form)
    user-partitions))