installer: Bump minimum disk size to 4GB.
[dragonfly.git] / usr.sbin / installer / dfuibe_installer / fn_subpart_ufs.c
1 /*
2  * Copyright (c)2004 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.c
36  * Installer Function : Create Subpartitions.
37  * $Id: fn_subpart.c,v 1.50 2005/04/07 20:22:40 cpressey Exp $
38  */
39
40 #include <stdio.h>
41 #include <stdlib.h>
42 #include <string.h>
43
44 #ifdef ENABLE_NLS
45 #include <libintl.h>
46 #define _(String) gettext (String)
47 #else
48 #define _(String) (String)
49 #endif
50
51 #include "libaura/mem.h"
52 #include "libaura/buffer.h"
53 #include "libaura/dict.h"
54 #include "libaura/fspred.h"
55
56 #include "libdfui/dfui.h"
57 #include "libdfui/dump.h"
58 #include "libdfui/system.h"
59
60 #include "libinstaller/commands.h"
61 #include "libinstaller/diskutil.h"
62 #include "libinstaller/functions.h"
63 #include "libinstaller/uiutil.h"
64
65 #include "fn.h"
66 #include "flow.h"
67 #include "pathnames.h"
68
69 static int      create_subpartitions(struct i_fn_args *);
70 static long     default_capacity(struct storage *, int);
71 static int      check_capacity(struct i_fn_args *);
72 static int      check_subpartition_selections(struct dfui_response *, struct i_fn_args *);
73 static void     save_subpartition_selections(struct dfui_response *, struct i_fn_args *);
74 static void     populate_create_subpartitions_form(struct dfui_form *, struct i_fn_args *);
75 static int      warn_subpartition_selections(struct i_fn_args *);
76 static int      warn_encrypted_root(struct i_fn_args *);
77 static struct dfui_form *make_create_subpartitions_form(struct i_fn_args *);
78 static int      show_create_subpartitions_form(struct dfui_form *, struct i_fn_args *);
79
80 static const char *def_mountpt[]  = {"/", "swap", "/var", "/tmp", "/usr", "/home", NULL};
81 static int expert = 0;
82
83 /*
84  * Given a set of subpartitions-to-be in the selected slice,
85  * create them.
86  */
87 static int
88 create_subpartitions(struct i_fn_args *a)
89 {
90         struct subpartition *sp;
91         struct commands *cmds;
92         int result = 0;
93         int num_partitions;
94
95         cmds = commands_new();
96         if (!is_file("%sinstall.disklabel.%s",
97             a->tmp,
98             slice_get_device_name(storage_get_selected_slice(a->s)))) {
99                 /*
100                  * Get a copy of the 'virgin' disklabel.
101                  * XXX It might make more sense for this to
102                  * happen right after format_slice() instead.
103                  */
104                 command_add(cmds, "%s%s -r %s >%sinstall.disklabel.%s",
105                     a->os_root, cmd_name(a, "DISKLABEL64"),
106                     slice_get_device_name(storage_get_selected_slice(a->s)),
107                     a->tmp,
108                     slice_get_device_name(storage_get_selected_slice(a->s)));
109         }
110
111         /*
112          * Weave together a new disklabel out the of the 'virgin'
113          * disklabel, and the user's subpartition choices.
114          */
115
116         /*
117          * Take everything from the 'virgin' disklabel up until the
118          * '16 partitions' line.
119          */
120         num_partitions = 16;
121         command_add(cmds, "%s%s '$2==\"partitions:\" || cut { cut = 1 } !cut { print $0 }' <%sinstall.disklabel.%s >%sinstall.disklabel",
122             a->os_root, cmd_name(a, "AWK"),
123             a->tmp,
124             slice_get_device_name(storage_get_selected_slice(a->s)),
125             a->tmp);
126
127         /*
128          * 16 partitions:
129          * #          size     offset    fstype
130          *   c:   16383969          0    unused #    7999.985MB
131          */
132
133         command_add(cmds, "%s%s '%d partitions:' >>%sinstall.disklabel",
134             a->os_root, cmd_name(a, "ECHO"), num_partitions ,a->tmp);
135         command_add(cmds, "%s%s '%s' >>%sinstall.disklabel",
136             a->os_root, cmd_name(a, "ECHO"),
137             "#          size     offset    fstype",
138             a->tmp);
139
140 #ifdef DEBUG
141         for (sp = slice_subpartition_first(storage_get_selected_slice(a->s));
142              sp != NULL; sp = subpartition_next(sp)) {
143                 command_add(cmds, "%s%s 'mountpoint: %s device: %s'",
144                      a->os_root, cmd_name(a, "ECHO"),
145                      subpartition_get_mountpoint(sp),
146                      subpartition_get_device_name(sp));
147         }
148 #endif
149
150         /*
151          * Write a line for each subpartition the user wants.
152          */
153         for (sp = slice_subpartition_first(storage_get_selected_slice(a->s));
154              sp != NULL; sp = subpartition_next(sp)) {
155                 if (subpartition_is_tmpfsbacked(sp)) {
156                         continue;
157                 }
158                 if (subpartition_is_swap(sp)) {
159                         command_add(cmds, "%s%s '  %c:\t%s\t*\tswap' >>%sinstall.disklabel",
160                             a->os_root, cmd_name(a, "ECHO"),
161                             subpartition_get_letter(sp),
162                             capacity_to_string(subpartition_get_capacity(sp)),
163                             a->tmp);
164                 } else {
165                         command_add(cmds, "%s%s '  %c:\t%s\t%s\t4.2BSD' >>%sinstall.disklabel",
166                             a->os_root, cmd_name(a, "ECHO"),
167                             subpartition_get_letter(sp),
168                             capacity_to_string(subpartition_get_capacity(sp)),
169                             subpartition_get_letter(sp) == 'a' ? "0" : "*",
170                             a->tmp);
171                 }
172         }
173         temp_file_add(a, "install.disklabel");
174
175         /*
176          * Label the slice from the disklabel we just wove together.
177          */
178         command_add(cmds, "%s%s -R -B -r %s %sinstall.disklabel",
179             a->os_root, cmd_name(a, "DISKLABEL64"),
180             slice_get_device_name(storage_get_selected_slice(a->s)),
181             a->tmp);
182
183         /*
184          * Create a snapshot of the disklabel we just created
185          * for debugging inspection in the log.
186          */
187         command_add(cmds, "%s%s %s",
188             a->os_root, cmd_name(a, "DISKLABEL64"),
189             slice_get_device_name(storage_get_selected_slice(a->s)));
190
191         /*
192          * If encryption was specified, load dm(4).
193          */
194         for (sp = slice_subpartition_first(storage_get_selected_slice(a->s));
195              sp != NULL; sp = subpartition_next(sp)) {
196                 if (subpartition_is_encrypted(sp)) {
197                         fn_get_passphrase(a);
198                         break;
199                 }
200         }
201
202         /*
203          * Create filesystems on the newly-created subpartitions.
204          */
205         for (sp = slice_subpartition_first(storage_get_selected_slice(a->s));
206              sp != NULL; sp = subpartition_next(sp)) {
207                 if (subpartition_is_swap(sp) || subpartition_is_tmpfsbacked(sp)) {
208                         if (subpartition_is_swap(sp) &&
209                             subpartition_is_encrypted(sp)) {
210                                 command_add(cmds,
211                                     "%s%s -d /tmp/t1 luksFormat /dev/%s",
212                                     a->os_root, cmd_name(a, "CRYPTSETUP"),
213                                     subpartition_get_device_name(sp));
214                                 command_add(cmds,
215                                     "%s%s -d /tmp/t1 luksOpen /dev/%s swap",
216                                     a->os_root, cmd_name(a, "CRYPTSETUP"),
217                                     subpartition_get_device_name(sp));
218                         }
219                         continue;
220                 }
221
222                 if (subpartition_is_encrypted(sp) &&
223                     strcmp(subpartition_get_mountpoint(sp), "/") != 0) {
224                         command_add(cmds,
225                             "%s%s -d /tmp/t1 luksFormat /dev/%s",
226                             a->os_root, cmd_name(a, "CRYPTSETUP"),
227                             subpartition_get_device_name(sp));
228                         command_add(cmds,
229                             "%s%s -d /tmp/t1 luksOpen /dev/%s %s",
230                             a->os_root, cmd_name(a, "CRYPTSETUP"),
231                             subpartition_get_device_name(sp),
232                             subpartition_get_mountpoint(sp) + 1);
233                         command_add(cmds, "%s%s%s -b %ld -f %ld /dev/mapper/%s",
234                             a->os_root, cmd_name(a, "NEWFS"),
235                             subpartition_is_softupdated(sp) ? " -U" : "",
236                             subpartition_get_bsize(sp),
237                             subpartition_get_fsize(sp),
238                             subpartition_get_mountpoint(sp) + 1);
239                 } else {
240                         command_add(cmds, "%s%s%s -b %ld -f %ld /dev/%s",
241                             a->os_root, cmd_name(a, "NEWFS"),
242                             subpartition_is_softupdated(sp) ? " -U" : "",
243                             subpartition_get_bsize(sp),
244                             subpartition_get_fsize(sp),
245                             subpartition_get_device_name(sp));
246                 }
247         }
248
249         result = commands_execute(a, cmds);
250         commands_free(cmds);
251         return(result);
252 }
253
254 static long
255 default_capacity(struct storage *s, int mtpt)
256 {
257         unsigned long swap;
258         unsigned long capacity;
259         unsigned long mem;
260
261         if (mtpt == MTPT_HOME)
262                 return(-1);
263
264         capacity = slice_get_capacity(storage_get_selected_slice(s));
265         mem = storage_get_memsize(s);
266         swap = 2 * mem;
267         if (mem > (capacity / 2))
268                 swap = mem;
269         if (mem > capacity)
270                 swap = capacity / 2;
271         if (swap > SWAP_MAX)
272                 swap = SWAP_MAX;
273
274         if (capacity < DISK_MIN) {
275                 /*
276                  * For the purposes of this installer:
277                  * can't be done.  Sorry.
278                  */
279                 return(-1);
280         } else if (capacity < 10240) {
281                 switch (mtpt) {
282                 case MTPT_ROOT: return(640);
283                 case MTPT_SWAP: return(swap);
284                 case MTPT_VAR:  return(256);
285                 case MTPT_TMP:  return(256);
286                 case MTPT_USR:  return(2688);
287                 }
288         } else {
289                 switch (mtpt) {
290                 case MTPT_ROOT: return(768);
291                 case MTPT_SWAP: return(swap);
292                 case MTPT_VAR:  return(256);
293                 case MTPT_TMP:  return(256);
294                 case MTPT_USR:  return(7680);
295                 }
296         }
297         /* shouldn't ever happen */
298         return(-1);
299 }
300
301 static int
302 check_capacity(struct i_fn_args *a)
303 {
304         struct subpartition *sp;
305         long min_capacity[] = {320, 0, 16, 0, 1472, 0, 0};
306         unsigned long total_capacity = 0;
307         int mtpt;
308
309         if (subpartition_find(storage_get_selected_slice(a->s), "/usr") == NULL)
310                 min_capacity[MTPT_ROOT] += min_capacity[MTPT_USR];
311
312         for (sp = slice_subpartition_first(storage_get_selected_slice(a->s));
313              sp != NULL; sp = subpartition_next(sp)) {
314                 long subpart_capacity = subpartition_get_capacity(sp);
315                 const char *mountpt = subpartition_get_mountpoint(sp);
316
317                 if (subpart_capacity == -1)
318                         total_capacity++;
319                 else
320                         total_capacity += subpart_capacity;
321                 for (mtpt = 0; def_mountpt[mtpt] != NULL; mtpt++) {
322                         if (strcmp(mountpt, def_mountpt[mtpt]) == 0 &&
323                             subpart_capacity < min_capacity[mtpt] &&
324                             subpart_capacity != -1) {
325                                 inform(a->c, _("WARNING: The size (%ldM) specified for "
326                                     "the %s subpartition is too small. It "
327                                     "should be at least %ldM or you will "
328                                     "risk running out of space during "
329                                     "the installation."),
330                                     subpart_capacity, mountpt,
331                                     min_capacity[mtpt]);
332                         }
333                 }
334         }
335
336         if (total_capacity > slice_get_capacity(storage_get_selected_slice(a->s))) {
337                 inform(a->c, _("The space allocated to all of your selected "
338                     "subpartitions (%luM) exceeds the total "
339                     "capacity of the selected primary partition "
340                     "(%luM). Remove some subpartitions or choose "
341                     "a smaller size for them and try again."),
342                     total_capacity, slice_get_capacity(storage_get_selected_slice(a->s)));
343                 return(0);
344         }
345
346         return(1);
347 }
348
349 static int
350 check_subpartition_selections(struct dfui_response *r, struct i_fn_args *a)
351 {
352         struct dfui_dataset *ds;
353         struct dfui_dataset *star_ds = NULL;
354         struct aura_dict *d;
355         const char *mountpoint, *capstring;
356         long capacity = 0;
357         int found_root = 0;
358         int valid = 1;
359
360         d = aura_dict_new(1, AURA_DICT_LIST);
361
362         if ((ds = dfui_response_dataset_get_first(r)) == NULL) {
363                 inform(a->c, _("Please set up at least one subpartition."));
364                 valid = 0;
365         }
366
367         for (ds = dfui_response_dataset_get_first(r); valid && ds != NULL;
368             ds = dfui_dataset_get_next(ds)) {
369 #ifdef DEBUG
370                 dfui_dataset_dump(ds);
371 #endif
372                 mountpoint = dfui_dataset_get_value(ds, "mountpoint");
373                 capstring = dfui_dataset_get_value(ds, "capacity");
374
375                 if (expert) {
376                         int tmpfsbacked;
377
378                         tmpfsbacked = (strcmp(dfui_dataset_get_value(ds, "tmpfsbacked"), "Y") == 0);
379                         if (tmpfsbacked && strcmp(mountpoint, "/") == 0) {
380                                 inform(a->c, _("/ cannot be TMPFS backed."));
381                                 valid = 0;
382                         }
383                 }
384
385                 if (aura_dict_exists(d, mountpoint, strlen(mountpoint) + 1)) {
386                         inform(a->c, _("The same mount point cannot be specified "
387                             "for two different subpartitions."));
388                         valid = 0;
389                 }
390
391                 if (strcmp(mountpoint, "/") == 0)
392                         found_root = 1;
393
394                 if (strcmp(capstring, "*") == 0) {
395                         if (star_ds != NULL) {
396                                 inform(a->c, _("You cannot have more than one subpartition "
397                                     "with a '*' capacity (meaning 'use the remainder "
398                                     "of the primary partition'.)"));
399                                 valid = 0;
400                         } else {
401                                 star_ds = ds;
402                         }
403                 }
404
405                 if (!(!strcasecmp(mountpoint, "swap") || mountpoint[0] == '/')) {
406                         inform(a->c, _("Mount point must be either 'swap', or it must "
407                             "start with a '/'."));
408                         valid = 0;
409                 }
410
411                 if (strpbrk(mountpoint, " \\\"'`") != NULL) {
412                         inform(a->c, _("Mount point may not contain the following "
413                             "characters: blank space, backslash, or "
414                             "single, double, or back quotes."));
415                         valid = 0;
416                 }
417
418                 if (strlen(capstring) == 0) {
419                         inform(a->c, _("A capacity must be specified."));
420                         valid = 0;
421                 }
422
423                 if (!string_to_capacity(capstring, &capacity)) {
424                         inform(a->c, _("Capacity must be either a '*' symbol "
425                             "to indicate 'use the rest of the primary "
426                             "partition', or it must be a series of decimal "
427                             "digits ending with an 'M' (indicating "
428                             "megabytes), a 'G' (indicating gigabytes) and "
429                             "so on (up to 'E'.)"));
430                         valid = 0;
431                 }
432
433                 /*
434                  * Maybe remove this limit entirely?
435                  */
436                 if ((strcasecmp(mountpoint, "swap") == 0) &&
437                     (capacity > SWAP_MAX)) {
438                         inform(a->c, _("Swap capacity is limited to %dG."),
439                             SWAP_MAX / 1024);
440                         valid = 0;
441                 }
442
443                 /*
444                  * If we made it through that obstacle course, all is well.
445                  */
446
447                 if (valid)
448                         aura_dict_store(d, mountpoint, strlen(mountpoint) + 1, "", 1);
449         }
450
451         if (!found_root) {
452                 inform(a->c, _("You must include a / (root) subpartition."));
453                 valid = 0;
454         }
455
456         if (aura_dict_size(d) > 16) {
457                 inform(a->c, _("You cannot have more than 16 subpartitions "
458                     "on a single primary partition.  Remove some "
459                     "and try again."));
460                 valid = 0;
461         }
462
463         aura_dict_free(d);
464
465         return(valid);
466 }
467
468 static void
469 save_subpartition_selections(struct dfui_response *r, struct i_fn_args *a)
470 {
471         struct dfui_dataset *ds;
472         char tmpfsbacked;
473         const char *mountpoint, *capstring;
474         long capacity;
475         long bsize, fsize;
476         int softupdates;
477         int valid = 1;
478
479         subpartitions_free(storage_get_selected_slice(a->s));
480
481         for (ds = dfui_response_dataset_get_first(r); valid && ds != NULL;
482             ds = dfui_dataset_get_next(ds)) {
483                 mountpoint = dfui_dataset_get_value(ds, "mountpoint");
484                 capstring = dfui_dataset_get_value(ds, "capacity");
485
486                 if (expert) {
487                         softupdates =
488                             (strcmp(dfui_dataset_get_value(ds, "softupdates"), "Y") == 0);
489                         fsize = atol(dfui_dataset_get_value(ds, "fsize"));
490                         bsize = atol(dfui_dataset_get_value(ds, "bsize"));
491                         tmpfsbacked = (strcmp(dfui_dataset_get_value(ds, "tmpfsbacked"), "Y") == 0);
492                 } else {
493                         softupdates = (strcmp(mountpoint, "/") == 0 ? 0 : 1);
494                         tmpfsbacked = 0;
495                         fsize = -1;
496                         bsize = -1;
497                 }
498
499                 if (string_to_capacity(capstring, &capacity)) {
500                         subpartition_new_ufs(storage_get_selected_slice(a->s),
501                             mountpoint, capacity,
502                             strcasecmp(dfui_dataset_get_value(ds, "encrypted"), "Y") == 0,
503                             softupdates, fsize, bsize, tmpfsbacked);
504                 }
505         }
506 }
507
508 static void
509 populate_create_subpartitions_form(struct dfui_form *f, struct i_fn_args *a)
510 {
511         struct subpartition *sp;
512         struct dfui_dataset *ds;
513         char temp[32];
514         int mtpt;
515         long capacity;
516
517         if (slice_subpartition_first(storage_get_selected_slice(a->s)) != NULL) {
518                 /*
519                  * The user has already given us their subpartition
520                  * preferences, so use them here.
521                  */
522                 for (sp = slice_subpartition_first(storage_get_selected_slice(a->s));
523                      sp != NULL; sp = subpartition_next(sp)) {
524                         ds = dfui_dataset_new();
525                         dfui_dataset_celldata_add(ds, "mountpoint",
526                             subpartition_get_mountpoint(sp));
527                         dfui_dataset_celldata_add(ds, "capacity",
528                             capacity_to_string(subpartition_get_capacity(sp)));
529                         dfui_dataset_celldata_add(ds, "encrypted",
530                             subpartition_is_encrypted(sp) ? "Y" : "N");
531                         if (expert) {
532                                 dfui_dataset_celldata_add(ds, "softupdates",
533                                     subpartition_is_softupdated(sp) ? "Y" : "N");
534                                 dfui_dataset_celldata_add(ds, "tmpfsbacked",
535                                     subpartition_is_tmpfsbacked(sp) ? "Y" : "N");
536                                 snprintf(temp, 32, "%ld", subpartition_get_fsize(sp));
537                                 dfui_dataset_celldata_add(ds, "fsize",
538                                     temp);
539                                 snprintf(temp, 32, "%ld", subpartition_get_bsize(sp));
540                                 dfui_dataset_celldata_add(ds, "bsize",
541                                     temp);
542                         }
543                         dfui_form_dataset_add(f, ds);
544                 }
545         } else {
546                 /*
547                  * Otherwise, populate the form with datasets representing
548                  * reasonably-calculated defaults.  The defaults are chosen
549                  * based on the slice's total capacity and the machine's
550                  * total physical memory (for swap.)
551                  */
552                 for (mtpt = 0; def_mountpt[mtpt] != NULL; mtpt++) {
553                         capacity = default_capacity(a->s, mtpt);
554                         ds = dfui_dataset_new();
555                         dfui_dataset_celldata_add(ds, "mountpoint",
556                             def_mountpt[mtpt]);
557                         dfui_dataset_celldata_add(ds, "capacity",
558                             capacity_to_string(capacity));
559                         dfui_dataset_celldata_add(ds, "encrypted", "N");
560                         if (expert) {
561                                 dfui_dataset_celldata_add(ds, "softupdates",
562                                     strcmp(def_mountpt[mtpt], "/") != 0 ? "Y" : "N");
563                                 dfui_dataset_celldata_add(ds, "tmpfsbacked",
564                                     "N");
565                                 dfui_dataset_celldata_add(ds, "fsize",
566                                     capacity < 1024 ? "1024" : "2048");
567                                 dfui_dataset_celldata_add(ds, "bsize",
568                                     capacity < 1024 ? "8192" : "16384");
569                         }
570                         dfui_form_dataset_add(f, ds);
571                 }
572         }
573 }
574
575 static int
576 warn_subpartition_selections(struct i_fn_args *a)
577 {
578         int valid = 0;
579         struct aura_buffer *omit, *consequences;
580
581         omit = aura_buffer_new(2048);
582         consequences = aura_buffer_new(2048);
583
584         valid = check_capacity(a);
585         if (subpartition_find(storage_get_selected_slice(a->s), "/var") == NULL) {
586                 aura_buffer_cat(omit, "/var ");
587                 aura_buffer_cat(consequences, _("/var will be a plain dir in /\n"));
588         }
589         if (subpartition_find(storage_get_selected_slice(a->s), "/usr") == NULL) {
590                 aura_buffer_cat(omit, "/usr ");
591                 aura_buffer_cat(consequences, _("/usr will be a plain dir in /\n"));
592         }
593         if (subpartition_find(storage_get_selected_slice(a->s), "/tmp") == NULL) {
594                 aura_buffer_cat(omit, "/tmp ");
595                 aura_buffer_cat(consequences, _("/tmp will be symlinked to /var/tmp\n"));
596         }
597         if (subpartition_find(storage_get_selected_slice(a->s), "/home") == NULL) {
598                 aura_buffer_cat(omit, "/home ");
599                 aura_buffer_cat(consequences, _("/home will be symlinked to /usr/home\n"));
600         }
601
602         if (valid && aura_buffer_len(omit) > 0) {
603                 switch (dfui_be_present_dialog(a->c, _("Really omit?"),
604                     _("Omit Subpartition(s)|Return to Create Subpartitions"),
605                     _("You have elected to not have the following "
606                     "subpartition(s):\n\n%s\n\n"
607                     "The ramifications of these subpartition(s) being "
608                     "missing will be:\n\n%s\n"
609                     "Is this really what you want to do?"),
610                     aura_buffer_buf(omit), aura_buffer_buf(consequences))) {
611                 case 1:
612                         valid = 1;
613                         break;
614                 case 2:
615                         valid = 0;
616                         break;
617                 default:
618                         abort_backend();
619                 }
620         }
621
622         aura_buffer_free(omit);
623         aura_buffer_free(consequences);
624
625         return(!valid);
626 }
627
628 static int
629 warn_encrypted_root(struct i_fn_args *a)
630 {
631         int valid = 1;
632         struct subpartition *sp;
633
634         sp = subpartition_find(storage_get_selected_slice(a->s), "/");
635         if (sp == NULL)
636                 return(!valid);
637
638         if (subpartition_is_encrypted(sp)) {
639                 switch (dfui_be_present_dialog(a->c, _("root cannot be encrypted"),
640                     _("Leave root unencrypted|Return to Create Subpartitions"),
641                     _("You have selected encryption for the root partition which "
642                     "is not supported."))) {
643                 case 1:
644                         subpartition_clr_encrypted(sp);
645                         valid = 1;
646                         break;
647                 case 2:
648                         valid = 0;
649                         break;
650                 default:
651                         abort_backend();
652                 }
653         }
654
655         return(!valid);
656 }
657
658 static struct dfui_form *
659 make_create_subpartitions_form(struct i_fn_args *a)
660 {
661         struct dfui_field *fi;
662         struct dfui_form *f;
663         char msg_buf[1][1024];
664
665         snprintf(msg_buf[0], sizeof(msg_buf[0]),
666             _("Subpartitions further divide a primary partition for "
667             "use with %s.  Some reasons you may want "
668             "a set of subpartitions are:\n\n"
669             "- you want to restrict how much data can be written "
670             "to certain parts of the primary partition, to quell "
671             "denial-of-service attacks; and\n"
672             "- you want to speed up access to data on the disk."
673             ""), OPERATING_SYSTEM_NAME);
674
675         f = dfui_form_create(
676             "create_subpartitions",
677             _("Create Subpartitions"),
678             _("Set up the subpartitions (also known as just `partitions' "
679             "in BSD tradition) you want to have on this primary "
680             "partition.\n\n"
681             "For Capacity, use 'M' to indicate megabytes, 'G' to "
682             "indicate gigabytes, and so on (up to 'E'.) A single '*' "
683             "indicates 'use the remaining space on the primary partition'."),
684
685             msg_buf[0],
686
687             "p", "special", "dfinstaller_create_subpartitions",
688             "p", "minimum_width","64",
689
690             "f", "mountpoint", _("Mountpoint"), "", "",
691             "f", "capacity", _("Capacity"), "", "",
692
693             "f", "encrypted", _("Encrypted"), "", "",
694             "p", "control", "checkbox",
695
696             "a", "ok", _("Accept and Create"), "", "",
697             "a", "cancel",
698             (disk_get_formatted(storage_get_selected_disk(a->s)) ?
699             _("Return to Select Disk") :
700             _("Return to Select Primary Partition")), "", "",
701             "p", "accelerator", "ESC",
702
703             NULL
704         );
705
706         dfui_form_set_multiple(f, 1);
707         dfui_form_set_extensible(f, 1);
708
709         if (expert) {
710                 fi = dfui_form_field_add(f, "softupdates",
711                     dfui_info_new(_("Softupdates"), "", ""));
712                 dfui_field_property_set(fi, "control", "checkbox");
713
714                 fi = dfui_form_field_add(f, "tmpfsbacked",
715                     dfui_info_new(_("TMPFS"), "", ""));
716                 dfui_field_property_set(fi, "control", "checkbox");
717
718                 fi = dfui_form_field_add(f, "fsize",
719                     dfui_info_new(_("Frag Sz"), "", ""));
720
721                 fi = dfui_form_field_add(f, "bsize",
722                     dfui_info_new(_("Block Sz"), "", ""));
723
724                 dfui_form_action_add(f, "switch",
725                     dfui_info_new(_("Switch to Normal Mode"), "", ""));
726         } else {
727                 dfui_form_action_add(f, "switch",
728                     dfui_info_new(_("Switch to Expert Mode"), "", ""));
729         }
730
731         return(f);
732 }
733
734 /*
735  * Returns:
736  *      -1 = the form should be redisplayed
737  *       0 = failure, function is over
738  *       1 = success, function is over
739  */
740 static int
741 show_create_subpartitions_form(struct dfui_form *f, struct i_fn_args *a)
742 {
743         struct dfui_dataset *ds;
744         struct dfui_response *r;
745
746         for (;;) {
747                 if (dfui_form_dataset_get_first(f) == NULL)
748                         populate_create_subpartitions_form(f, a);
749
750                 if (!dfui_be_present(a->c, f, &r))
751                         abort_backend();
752
753                 if (strcmp(dfui_response_get_action_id(r), "cancel") == 0) {
754                         dfui_response_free(r);
755                         return(0);
756                 } else if (strcmp(dfui_response_get_action_id(r), "switch") == 0) {
757                         if (check_subpartition_selections(r, a)) {
758                                 save_subpartition_selections(r, a);
759                                 expert = expert ? 0 : 1;
760                                 dfui_response_free(r);
761                                 return(-1);
762                         }
763                 } else {
764                         if (check_subpartition_selections(r, a)) {
765                                 save_subpartition_selections(r, a);
766                                 if (!warn_subpartition_selections(a) &&
767                                     !warn_encrypted_root(a)) {
768                                         if (!create_subpartitions(a)) {
769                                                 inform(a->c, _("The subpartitions you chose were "
770                                                         "not correctly created, and the "
771                                                         "primary partition may "
772                                                         "now be in an inconsistent state. "
773                                                         "We recommend re-formatting it "
774                                                         "before proceeding."));
775                                                 dfui_response_free(r);
776                                                 return(0);
777                                         } else {
778                                                 dfui_response_free(r);
779                                                 return(1);
780                                         }
781                                 }
782                         }
783                 }
784
785                 dfui_form_datasets_free(f);
786                 /* dfui_form_datasets_add_from_response(f, r); */
787                 for (ds = dfui_response_dataset_get_first(r); ds != NULL;
788                     ds = dfui_dataset_get_next(ds)) {
789                         dfui_form_dataset_add(f, dfui_dataset_dup(ds));
790                 }
791         }
792 }
793
794 void
795 fn_create_subpartitions_ufs(struct i_fn_args *a)
796 {
797         struct dfui_form *f;
798         int done = 0;
799
800         a->result = 0;
801         while (!done) {
802                 f = make_create_subpartitions_form(a);
803                 switch (show_create_subpartitions_form(f, a)) {
804                 case -1:
805                         done = 0;
806                         break;
807                 case 0:
808                         done = 1;
809                         a->result = 0;
810                         break;
811                 case 1:
812                         done = 1;
813                         a->result = 1;
814                         break;
815                 }
816                 dfui_form_free(f);
817         }
818 }