Merge branch 'master' of ssh://crater.dragonflybsd.org/repository/git/dragonfly
[dragonfly.git] / usr.sbin / installer / dfuibe_installer / fn_subpart_hammer.c
1 /*
2  * Copyright (c) 2008 The DragonFly Project.  All rights reserved.
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions
6  * are met:
7  *
8  *   Redistributions of source code must retain the above copyright
9  *   notice, this list of conditions and the following disclaimer.
10  *
11  *   Redistributions in binary form must reproduce the above copyright
12  *   notice, this list of conditions and the following disclaimer in
13  *   the documentation and/or other materials provided with the
14  *   distribution.
15  *
16  *   Neither the name of the DragonFly Project nor the names of its
17  *   contributors may be used to endorse or promote products derived
18  *   from this software without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
23  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
24  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
25  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
26  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
27  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
29  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
31  * OF THE POSSIBILITY OF SUCH DAMAGE.
32  */
33
34 /*
35  * fn_subpart_hammer.c
36  * Installer Function : Create HAMMER Subpartitions.
37  */
38
39 #include <stdio.h>
40 #include <stdlib.h>
41 #include <string.h>
42
43 #ifdef ENABLE_NLS
44 #include <libintl.h>
45 #define _(String) gettext (String)
46 #else
47 #define _(String) (String)
48 #endif
49
50 #include "libaura/mem.h"
51 #include "libaura/buffer.h"
52 #include "libaura/dict.h"
53 #include "libaura/fspred.h"
54
55 #include "libdfui/dfui.h"
56 #include "libdfui/dump.h"
57 #include "libdfui/system.h"
58
59 #include "libinstaller/commands.h"
60 #include "libinstaller/diskutil.h"
61 #include "libinstaller/functions.h"
62 #include "libinstaller/uiutil.h"
63
64 #include "fn.h"
65 #include "flow.h"
66 #include "pathnames.h"
67
68 static int      create_subpartitions(struct i_fn_args *);
69 static long     default_capacity(struct storage *, const char *);
70 static int      check_capacity(struct i_fn_args *);
71 static int      check_subpartition_selections(struct dfui_response *, struct i_fn_args *);
72 static void     save_subpartition_selections(struct dfui_response *, struct i_fn_args *);
73 static void     populate_create_subpartitions_form(struct dfui_form *, struct i_fn_args *);
74 static int      warn_subpartition_selections(struct i_fn_args *);
75 static struct dfui_form *make_create_subpartitions_form(struct i_fn_args *);
76 static int      show_create_subpartitions_form(struct dfui_form *, struct i_fn_args *);
77
78 static const char *def_mountpt[]  = {"/boot", "swap", "/", NULL};
79 static int expert = 0;
80
81 /*
82  * Given a set of subpartitions-to-be in the selected slice,
83  * create them.
84  */
85 static int
86 create_subpartitions(struct i_fn_args *a)
87 {
88         struct subpartition *sp;
89         struct commands *cmds;
90         int result = 0;
91         int num_partitions;
92
93         cmds = commands_new();
94         if (!is_file("%sinstall.disklabel.%s",
95             a->tmp,
96             slice_get_device_name(storage_get_selected_slice(a->s)))) {
97                 /*
98                  * Get a copy of the 'virgin' disklabel.
99                  * XXX It might make more sense for this to
100                  * happen right after format_slice() instead.
101                  */
102                 command_add(cmds, "%s%s -r %s >%sinstall.disklabel.%s",
103                     a->os_root, cmd_name(a, "DISKLABEL64"),
104                     slice_get_device_name(storage_get_selected_slice(a->s)),
105                     a->tmp,
106                     slice_get_device_name(storage_get_selected_slice(a->s)));
107         }
108
109         /*
110          * Weave together a new disklabel out the of the 'virgin'
111          * disklabel, and the user's subpartition choices.
112          */
113
114         /*
115          * Take everything from the 'virgin' disklabel up until the
116          * '16 partitions' line.
117          */
118         num_partitions = 16;
119         command_add(cmds, "%s%s '$2==\"partitions:\" || cut { cut = 1 } !cut { print $0 }' <%sinstall.disklabel.%s >%sinstall.disklabel",
120             a->os_root, cmd_name(a, "AWK"),
121             a->tmp,
122             slice_get_device_name(storage_get_selected_slice(a->s)),
123             a->tmp);
124
125         /*
126          * 16 partitions:
127          * #          size     offset    fstype
128          *   c:   16383969          0    unused #    7999.985MB
129          */
130
131         command_add(cmds, "%s%s '%d partitions:' >>%sinstall.disklabel",
132             a->os_root, cmd_name(a, "ECHO"), num_partitions ,a->tmp);
133         command_add(cmds, "%s%s '%s' >>%sinstall.disklabel",
134             a->os_root, cmd_name(a, "ECHO"),
135             "#          size     offset    fstype",
136             a->tmp);
137
138 #ifdef DEBUG
139         for (sp = slice_subpartition_first(storage_get_selected_slice(a->s));
140              sp != NULL; sp = subpartition_next(sp)) {
141                 command_add(cmds, "%s%s 'mountpoint: %s device: %s'",
142                      a->os_root, cmd_name(a, "ECHO"),
143                      subpartition_get_mountpoint(sp),
144                      subpartition_get_device_name(sp));
145         }
146 #endif
147
148         /*
149          * Write a line for each subpartition the user wants.
150          */
151         for (sp = slice_subpartition_first(storage_get_selected_slice(a->s));
152              sp != NULL; sp = subpartition_next(sp)) {
153                 if (subpartition_is_mfsbacked(sp)) {
154                         continue;
155                 }
156                 if (subpartition_is_swap(sp)) {
157                         command_add(cmds, "%s%s '  %c:\t%s\t*\tswap' >>%sinstall.disklabel",
158                             a->os_root, cmd_name(a, "ECHO"),
159                             subpartition_get_letter(sp),
160                             capacity_to_string(subpartition_get_capacity(sp)),
161                             a->tmp);
162                 } else if (strcmp(subpartition_get_mountpoint(sp), "/boot") == 0) {
163                         command_add(cmds, "%s%s '  %c:\t%s\t0\t4.2BSD' >>%sinstall.disklabel",
164                             a->os_root, cmd_name(a, "ECHO"),
165                             subpartition_get_letter(sp),
166                             capacity_to_string(subpartition_get_capacity(sp)),
167                             a->tmp);
168                 } else {
169                         command_add(cmds, "%s%s '  %c:\t%s\t*\tHAMMER' >>%sinstall.disklabel",
170                             a->os_root, cmd_name(a, "ECHO"),
171                             subpartition_get_letter(sp),
172                             capacity_to_string(subpartition_get_capacity(sp)),
173                             a->tmp);
174                 }
175         }
176         temp_file_add(a, "install.disklabel");
177
178         /*
179          * Label the slice from the disklabel we just wove together.
180          */
181         command_add(cmds, "%s%s -R -B -r %s %sinstall.disklabel",
182             a->os_root, cmd_name(a, "DISKLABEL64"),
183             slice_get_device_name(storage_get_selected_slice(a->s)),
184             a->tmp);
185
186         /*
187          * Create a snapshot of the disklabel we just created
188          * for debugging inspection in the log.
189          */
190         command_add(cmds, "%s%s %s",
191             a->os_root, cmd_name(a, "DISKLABEL64"),
192             slice_get_device_name(storage_get_selected_slice(a->s)));
193
194         /*
195          * Create filesystems on the newly-created subpartitions.
196          */
197         for (sp = slice_subpartition_first(storage_get_selected_slice(a->s));
198              sp != NULL; sp = subpartition_next(sp)) {
199                 if (subpartition_is_swap(sp) || subpartition_is_mfsbacked(sp))
200                         continue;
201
202                 if (strcmp(subpartition_get_mountpoint(sp), "/boot") == 0) {
203                         command_add(cmds, "%s%s %sdev/%s",
204                             a->os_root, cmd_name(a, "NEWFS"),
205                             a->os_root,
206                             subpartition_get_device_name(sp));
207                 } else {
208                         command_add(cmds, "%s%s -f -L ROOT %sdev/%s",
209                             a->os_root, cmd_name(a, "NEWFS_HAMMER"),
210                             a->os_root,
211                             subpartition_get_device_name(sp));
212                 }
213         }
214
215         result = commands_execute(a, cmds);
216         commands_free(cmds);
217         return(result);
218 }
219
220 static long
221 default_capacity(struct storage *s, const char *mtpt)
222 {
223         unsigned long swap;
224         unsigned long capacity;
225         unsigned long mem;
226
227         capacity = slice_get_capacity(storage_get_selected_slice(s));
228         mem = storage_get_memsize(s);
229         swap = 2 * mem;
230         if (mem > (capacity / 2) || capacity < 4096)
231                 swap = mem;
232         if (mem > capacity)
233                 swap = capacity / 2;
234         if (swap > 8192)
235                 swap = 8192;
236
237         if (capacity < DISK_MIN) {
238                 /*
239                  * For the purposes of this installer:
240                  * can't be done.  Sorry.
241                  */
242                 return(-1);
243         } else if (strcmp(mtpt, "/boot") == 0) {
244                 return(256);
245         } else if (strcmp(mtpt, "swap") == 0) {
246                 return(swap);
247         } else if (strcmp(mtpt, "/") == 0) {
248                 return(-1);
249         }
250         /* shouldn't ever happen */
251         return(-1);
252 }
253
254 static int
255 check_capacity(struct i_fn_args *a)
256 {
257         struct subpartition *sp;
258         unsigned long min_capacity[] = {256, 0, DISK_MIN - 256, 0};
259         unsigned long total_capacity = 0;
260         int mtpt;
261
262         for (sp = slice_subpartition_first(storage_get_selected_slice(a->s));
263              sp != NULL; sp = subpartition_next(sp)) {
264                 if (subpartition_get_capacity(sp) == -1)
265                         total_capacity++;
266                 else
267                         total_capacity += subpartition_get_capacity(sp);
268                 for (mtpt = 0; def_mountpt[mtpt] != NULL; mtpt++) {
269                         if (strcmp(subpartition_get_mountpoint(sp), def_mountpt[mtpt]) == 0 &&
270                             min_capacity[mtpt] > 0 &&
271                             subpartition_get_capacity(sp) < min_capacity[mtpt]) {
272                                 inform(a->c, _("WARNING: the %s subpartition should "
273                                     "be at least %dM in size or you will "
274                                     "risk running out of space during "
275                                     "the installation."),
276                                     subpartition_get_mountpoint(sp), min_capacity[mtpt]);
277                         }
278                 }
279                 if (strcmp(subpartition_get_mountpoint(sp), "/") == 0 &&
280                     subpartition_get_capacity(sp) < HAMMER_MIN) {
281                         inform(a->c, _("WARNING: HAMMER file systems"
282                         "less than 50G are not recommended!  You may"
283                         "have to run 'hammer prune-everything' and 'hammer reblock'"
284                         "quite often, even if using a nohistory mount."));
285                 }
286         }
287
288         if (total_capacity > slice_get_capacity(storage_get_selected_slice(a->s))) {
289                 inform(a->c, _("The space allocated to all of your selected "
290                     "subpartitions (%dM) exceeds the total "
291                     "capacity of the selected primary partition "
292                     "(%dM). Remove some subpartitions or choose "
293                     "a smaller size for them and try again."),
294                     total_capacity, slice_get_capacity(storage_get_selected_slice(a->s)));
295                 return(0);
296         }
297
298         return(1);
299 }
300
301 static int
302 check_subpartition_selections(struct dfui_response *r, struct i_fn_args *a)
303 {
304         struct dfui_dataset *ds;
305         struct dfui_dataset *star_ds = NULL;
306         struct aura_dict *d;
307         const char *mountpoint, *capstring;
308         long capacity = 0;
309         int found_root = 0;
310         int valid = 1;
311
312         d = aura_dict_new(1, AURA_DICT_LIST);
313
314         if ((ds = dfui_response_dataset_get_first(r)) == NULL) {
315                 inform(a->c, _("Please set up at least one subpartition."));
316                 valid = 0;
317         }
318
319         for (ds = dfui_response_dataset_get_first(r); valid && ds != NULL;
320             ds = dfui_dataset_get_next(ds)) {
321 #ifdef DEBUG
322                 dfui_dataset_dump(ds);
323 #endif
324                 mountpoint = dfui_dataset_get_value(ds, "mountpoint");
325                 capstring = dfui_dataset_get_value(ds, "capacity");
326
327                 if (aura_dict_exists(d, mountpoint, strlen(mountpoint) + 1)) {
328                         inform(a->c, _("The same mount point cannot be specified "
329                             "for two different subpartitions."));
330                         valid = 0;
331                 }
332
333                 if (strcmp(mountpoint, "/") == 0)
334                         found_root = 1;
335
336                 if (strcmp(capstring, "*") == 0) {
337                         if (star_ds != NULL) {
338                                 inform(a->c, _("You cannot have more than one subpartition "
339                                     "with a '*' capacity (meaning 'use the remainder "
340                                     "of the primary partition'.)"));
341                                 valid = 0;
342                         } else {
343                                 star_ds = ds;
344                         }
345                 }
346
347                 if (!(!strcasecmp(mountpoint, "swap") || mountpoint[0] == '/')) {
348                         inform(a->c, _("Mount point must be either 'swap', or it must "
349                             "start with a '/'."));
350                         valid = 0;
351                 }
352
353                 if (strpbrk(mountpoint, " \\\"'`") != NULL) {
354                         inform(a->c, _("Mount point may not contain the following "
355                             "characters: blank space, backslash, or "
356                             "single, double, or back quotes."));
357                         valid = 0;
358                 }
359
360                 if (strlen(capstring) == 0) {
361                         inform(a->c, _("A capacity must be specified."));
362                         valid = 0;
363                 }
364
365                 if (!string_to_capacity(capstring, &capacity)) {
366                         inform(a->c, _("Capacity must be either a '*' symbol to indicate "
367                             "'use the rest of the primary partition', or it "
368                             "must be a series of decimal digits ending with a "
369                             "'M' (indicating megabytes) or a 'G' (indicating "
370                             "gigabytes.)"));
371                         valid = 0;
372                 }
373
374                 if ((strcasecmp(mountpoint, "swap") == 0) && (capacity > 8192)) {
375                         inform(a->c, _("Swap capacity is limited to 8G."));
376                         valid = 0;
377                 }
378
379                 /*
380                  * If we made it through that obstacle course, all is well.
381                  */
382
383                 if (valid)
384                         aura_dict_store(d, mountpoint, strlen(mountpoint) + 1, "", 1);
385         }
386
387         if (!found_root) {
388                 inform(a->c, _("You must include a / (root) subpartition."));
389                 valid = 0;
390         }
391
392         if (aura_dict_size(d) > 16) {
393                 inform(a->c, _("You cannot have more than 16 subpartitions "
394                     "on a single primary partition.  Remove some "
395                     "and try again."));
396                 valid = 0;
397         }
398
399         aura_dict_free(d);
400
401         return(valid);
402 }
403
404 static void
405 save_subpartition_selections(struct dfui_response *r, struct i_fn_args *a)
406 {
407         struct dfui_dataset *ds;
408         const char *mountpoint, *capstring;
409         long capacity;
410         int valid = 1;
411
412         subpartitions_free(storage_get_selected_slice(a->s));
413
414         for (ds = dfui_response_dataset_get_first(r); valid && ds != NULL;
415             ds = dfui_dataset_get_next(ds)) {
416                 mountpoint = dfui_dataset_get_value(ds, "mountpoint");
417                 capstring = dfui_dataset_get_value(ds, "capacity");
418
419                 if (string_to_capacity(capstring, &capacity)) {
420                         subpartition_new_hammer(storage_get_selected_slice(a->s),
421                              mountpoint, capacity);
422                 }
423         }
424 }
425
426 static void
427 populate_create_subpartitions_form(struct dfui_form *f, struct i_fn_args *a)
428 {
429         struct subpartition *sp;
430         struct dfui_dataset *ds;
431         int i;
432         long capacity;
433
434         if (slice_subpartition_first(storage_get_selected_slice(a->s)) != NULL) {
435                 /*
436                  * The user has already given us their subpartition
437                  * preferences, so use them here.
438                  */
439                 for (sp = slice_subpartition_first(storage_get_selected_slice(a->s));
440                      sp != NULL; sp = subpartition_next(sp)) {
441                         ds = dfui_dataset_new();
442                         dfui_dataset_celldata_add(ds, "mountpoint",
443                             subpartition_get_mountpoint(sp));
444                         dfui_dataset_celldata_add(ds, "capacity",
445                             capacity_to_string(subpartition_get_capacity(sp)));
446                         dfui_form_dataset_add(f, ds);
447                 }
448         } else {
449                 /*
450                  * Otherwise, populate the form with datasets representing
451                  * reasonably-calculated defaults.  The defaults are chosen
452                  * based on the slice's total capacity and the machine's
453                  * total physical memory (for swap.)
454                  */
455                 for (i = 0; def_mountpt[i] != NULL; i++) {
456                         capacity = default_capacity(a->s, def_mountpt[i]);
457                         ds = dfui_dataset_new();
458                         dfui_dataset_celldata_add(ds, "mountpoint",
459                             def_mountpt[i]);
460                         dfui_dataset_celldata_add(ds, "capacity",
461                             capacity_to_string(capacity));
462                         dfui_form_dataset_add(f, ds);
463                 }
464         }
465 }
466
467 static int
468 warn_subpartition_selections(struct i_fn_args *a)
469 {
470         int valid = 0;
471
472         if (subpartition_find(storage_get_selected_slice(a->s), "/boot") == NULL) {
473                 inform(a->c, _("The /boot partition must not be omitted."));
474         } else if (subpartition_find(storage_get_selected_slice(a->s), "/home") != NULL ||
475             subpartition_find(storage_get_selected_slice(a->s), "/tmp") != NULL ||
476             subpartition_find(storage_get_selected_slice(a->s), "/usr") != NULL ||
477             subpartition_find(storage_get_selected_slice(a->s), "/usr/obj") != NULL ||
478             subpartition_find(storage_get_selected_slice(a->s), "/var") != NULL ||
479             subpartition_find(storage_get_selected_slice(a->s), "/var/crash") != NULL ||
480             subpartition_find(storage_get_selected_slice(a->s), "/var/tmp") != NULL) {
481                 inform(a->c, _("Pseudo filesystems will automatically be created "
482                         "for /home, /tmp, /usr, /usr/obj, /var, /var/crash "
483                         "and /var/tmp and must not be specified."));
484         } else {
485                 valid = check_capacity(a);
486         }
487
488         return(!valid);
489 }
490
491 static struct dfui_form *
492 make_create_subpartitions_form(struct i_fn_args *a)
493 {
494         struct dfui_form *f;
495         char msg_buf[1][1024];
496
497         snprintf(msg_buf[0], sizeof(msg_buf[0]),
498             _("Subpartitions further divide a primary partition for "
499             "use with %s.  Some reasons you may want "
500             "a set of subpartitions are:\n\n"
501             "- you want to restrict how much data can be written "
502             "to certain parts of the primary partition, to quell "
503             "denial-of-service attacks; and\n"
504             "- you want to speed up access to data on the disk."
505             ""), OPERATING_SYSTEM_NAME);
506
507         f = dfui_form_create(
508             "create_subpartitions",
509             _("Create Subpartitions"),
510             _("Set up the subpartitions (also known as just `partitions' "
511             "in BSD tradition) you want to have on this primary "
512             "partition. In most cases you should be fine with "
513             "the default settings.\n\n"
514             "For Capacity, use 'M' to indicate megabytes, 'G' to "
515             "indicate gigabytes, or a single '*' to indicate "
516             "'use the remaining space on the primary partition'."),
517
518             msg_buf[0],
519
520             "p", "special", "dfinstaller_create_subpartitions",
521             "p", "minimum_width","64",
522
523             "f", "mountpoint", _("Mountpoint"), "", "",
524             "f", "capacity", _("Capacity"), "", "",
525
526             "a", "ok", _("Accept and Create"), "", "",
527             "a", "cancel",
528             (disk_get_formatted(storage_get_selected_disk(a->s)) ?
529             _("Return to Select Disk") :
530             _("Return to Select Primary Partition")), "", "",
531             "p", "accelerator", "ESC",
532
533             NULL
534         );
535
536         dfui_form_set_multiple(f, 1);
537         dfui_form_set_extensible(f, 1);
538         /*
539          * Remove ATM until HAMMER installer support is better
540          * dfui_form_set_extensible(f, 1);
541          */
542 #if 0
543         if (expert) {
544                 fi = dfui_form_field_add(f, "softupdates",
545                     dfui_info_new(_("Softupdates"), "", ""));
546                 dfui_field_property_set(fi, "control", "checkbox");
547
548                 fi = dfui_form_field_add(f, "mfsbacked",
549                     dfui_info_new(_("MFS"), "", ""));
550                 dfui_field_property_set(fi, "control", "checkbox");
551
552                 fi = dfui_form_field_add(f, "fsize",
553                     dfui_info_new(_("Frag Sz"), "", ""));
554
555                 fi = dfui_form_field_add(f, "bsize",
556                     dfui_info_new(_("Block Sz"), "", ""));
557
558                 dfui_form_action_add(f, "switch",
559                     dfui_info_new(_("Switch to Normal Mode"), "", ""));
560         } else {
561                 dfui_form_action_add(f, "switch",
562                     dfui_info_new(_("Switch to Expert Mode"), "", ""));
563         }
564 #endif
565         return(f);
566 }
567
568 /*
569  * Returns:
570  *      -1 = the form should be redisplayed
571  *       0 = failure, function is over
572  *       1 = success, function is over
573  */
574 static int
575 show_create_subpartitions_form(struct dfui_form *f, struct i_fn_args *a)
576 {
577         struct dfui_dataset *ds;
578         struct dfui_response *r;
579
580         for (;;) {
581                 if (dfui_form_dataset_get_first(f) == NULL)
582                         populate_create_subpartitions_form(f, a);
583
584                 if (!dfui_be_present(a->c, f, &r))
585                         abort_backend();
586
587                 if (strcmp(dfui_response_get_action_id(r), "cancel") == 0) {
588                         dfui_response_free(r);
589                         return(0);
590                 } else if (strcmp(dfui_response_get_action_id(r), "switch") == 0) {
591                         if (check_subpartition_selections(r, a)) {
592                                 save_subpartition_selections(r, a);
593                                 expert = expert ? 0 : 1;
594                                 dfui_response_free(r);
595                                 return(-1);
596                         }
597                 } else {
598                         if (check_subpartition_selections(r, a)) {
599                                 save_subpartition_selections(r, a);
600                                 if (!warn_subpartition_selections(a)) {
601                                         if (!create_subpartitions(a)) {
602                                                 inform(a->c, _("The subpartitions you chose were "
603                                                         "not correctly created, and the "
604                                                         "primary partition may "
605                                                         "now be in an inconsistent state. "
606                                                         "We recommend re-formatting it "
607                                                         "before proceeding."));
608                                                 dfui_response_free(r);
609                                                 return(0);
610                                         } else {
611                                                 dfui_response_free(r);
612                                                 return(1);
613                                         }
614                                 }
615                         }
616                 }
617
618                 dfui_form_datasets_free(f);
619                 /* dfui_form_datasets_add_from_response(f, r); */
620                 for (ds = dfui_response_dataset_get_first(r); ds != NULL;
621                     ds = dfui_dataset_get_next(ds)) {
622                         dfui_form_dataset_add(f, dfui_dataset_dup(ds));
623                 }
624         }
625 }
626
627 /*
628  * fn_create_subpartitions_hammer: let the user specify what subpartitions they
629  * want on the disk, how large each should be, and where it should be mounted.
630  */
631 void
632 fn_create_subpartitions_hammer(struct i_fn_args *a)
633 {
634         struct dfui_form *f;
635         int done = 0;
636
637         a->result = 0;
638         while (!done) {
639                 f = make_create_subpartitions_form(a);
640                 switch (show_create_subpartitions_form(f, a)) {
641                 case -1:
642                         done = 0;
643                         break;
644                 case 0:
645                         done = 1;
646                         a->result = 0;
647                         break;
648                 case 1:
649                         done = 1;
650                         a->result = 1;
651                         break;
652                 }
653                 dfui_form_free(f);
654         }
655 }