58e48ad77a7c750919405f119a5386f17a7cc393
[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) || capacity < 4096)
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 < 4096) {
281                 switch (mtpt) {
282                 case MTPT_ROOT: return(320);
283                 case MTPT_SWAP: return(swap);
284                 case MTPT_VAR:  return(128);
285                 case MTPT_TMP:  return(128);
286                 case MTPT_USR:  return(1472);
287                 }
288         } else if (capacity < 10240) {
289                 switch (mtpt) {
290                 case MTPT_ROOT: return(640);
291                 case MTPT_SWAP: return(swap);
292                 case MTPT_VAR:  return(256);
293                 case MTPT_TMP:  return(256);
294                 case MTPT_USR:  return(2688);
295                 }
296         } else {
297                 switch (mtpt) {
298                 case MTPT_ROOT: return(768);
299                 case MTPT_SWAP: return(swap);
300                 case MTPT_VAR:  return(256);
301                 case MTPT_TMP:  return(256);
302                 case MTPT_USR:  return(7680);
303                 }
304         }
305         /* shouldn't ever happen */
306         return(-1);
307 }
308
309 static int
310 check_capacity(struct i_fn_args *a)
311 {
312         struct subpartition *sp;
313         long min_capacity[] = {320, 0, 16, 0, 1472, 0, 0};
314         unsigned long total_capacity = 0;
315         int mtpt;
316
317         if (subpartition_find(storage_get_selected_slice(a->s), "/usr") == NULL)
318                 min_capacity[MTPT_ROOT] += min_capacity[MTPT_USR];
319
320         for (sp = slice_subpartition_first(storage_get_selected_slice(a->s));
321              sp != NULL; sp = subpartition_next(sp)) {
322                 long subpart_capacity = subpartition_get_capacity(sp);
323                 const char *mountpt = subpartition_get_mountpoint(sp);
324
325                 if (subpart_capacity == -1)
326                         total_capacity++;
327                 else
328                         total_capacity += subpart_capacity;
329                 for (mtpt = 0; def_mountpt[mtpt] != NULL; mtpt++) {
330                         if (strcmp(mountpt, def_mountpt[mtpt]) == 0 &&
331                             subpart_capacity < min_capacity[mtpt] &&
332                             subpart_capacity != -1) {
333                                 inform(a->c, _("WARNING: The size (%ldM) specified for "
334                                     "the %s subpartition is too small. It "
335                                     "should be at least %ldM or you will "
336                                     "risk running out of space during "
337                                     "the installation."),
338                                     subpart_capacity, mountpt,
339                                     min_capacity[mtpt]);
340                         }
341                 }
342         }
343
344         if (total_capacity > slice_get_capacity(storage_get_selected_slice(a->s))) {
345                 inform(a->c, _("The space allocated to all of your selected "
346                     "subpartitions (%luM) exceeds the total "
347                     "capacity of the selected primary partition "
348                     "(%luM). Remove some subpartitions or choose "
349                     "a smaller size for them and try again."),
350                     total_capacity, slice_get_capacity(storage_get_selected_slice(a->s)));
351                 return(0);
352         }
353
354         return(1);
355 }
356
357 static int
358 check_subpartition_selections(struct dfui_response *r, struct i_fn_args *a)
359 {
360         struct dfui_dataset *ds;
361         struct dfui_dataset *star_ds = NULL;
362         struct aura_dict *d;
363         const char *mountpoint, *capstring;
364         long capacity = 0;
365         int found_root = 0;
366         int valid = 1;
367
368         d = aura_dict_new(1, AURA_DICT_LIST);
369
370         if ((ds = dfui_response_dataset_get_first(r)) == NULL) {
371                 inform(a->c, _("Please set up at least one subpartition."));
372                 valid = 0;
373         }
374
375         for (ds = dfui_response_dataset_get_first(r); valid && ds != NULL;
376             ds = dfui_dataset_get_next(ds)) {
377 #ifdef DEBUG
378                 dfui_dataset_dump(ds);
379 #endif
380                 mountpoint = dfui_dataset_get_value(ds, "mountpoint");
381                 capstring = dfui_dataset_get_value(ds, "capacity");
382
383                 if (expert) {
384                         int tmpfsbacked;
385
386                         tmpfsbacked = (strcmp(dfui_dataset_get_value(ds, "tmpfsbacked"), "Y") == 0);
387                         if (tmpfsbacked && strcmp(mountpoint, "/") == 0) {
388                                 inform(a->c, _("/ cannot be TMPFS backed."));
389                                 valid = 0;
390                         }
391                 }
392
393                 if (aura_dict_exists(d, mountpoint, strlen(mountpoint) + 1)) {
394                         inform(a->c, _("The same mount point cannot be specified "
395                             "for two different subpartitions."));
396                         valid = 0;
397                 }
398
399                 if (strcmp(mountpoint, "/") == 0)
400                         found_root = 1;
401
402                 if (strcmp(capstring, "*") == 0) {
403                         if (star_ds != NULL) {
404                                 inform(a->c, _("You cannot have more than one subpartition "
405                                     "with a '*' capacity (meaning 'use the remainder "
406                                     "of the primary partition'.)"));
407                                 valid = 0;
408                         } else {
409                                 star_ds = ds;
410                         }
411                 }
412
413                 if (!(!strcasecmp(mountpoint, "swap") || mountpoint[0] == '/')) {
414                         inform(a->c, _("Mount point must be either 'swap', or it must "
415                             "start with a '/'."));
416                         valid = 0;
417                 }
418
419                 if (strpbrk(mountpoint, " \\\"'`") != NULL) {
420                         inform(a->c, _("Mount point may not contain the following "
421                             "characters: blank space, backslash, or "
422                             "single, double, or back quotes."));
423                         valid = 0;
424                 }
425
426                 if (strlen(capstring) == 0) {
427                         inform(a->c, _("A capacity must be specified."));
428                         valid = 0;
429                 }
430
431                 if (!string_to_capacity(capstring, &capacity)) {
432                         inform(a->c, _("Capacity must be either a '*' symbol "
433                             "to indicate 'use the rest of the primary "
434                             "partition', or it must be a series of decimal "
435                             "digits ending with an 'M' (indicating "
436                             "megabytes), a 'G' (indicating gigabytes) and "
437                             "so on (up to 'E'.)"));
438                         valid = 0;
439                 }
440
441                 /*
442                  * Maybe remove this limit entirely?
443                  */
444                 if ((strcasecmp(mountpoint, "swap") == 0) &&
445                     (capacity > SWAP_MAX)) {
446                         inform(a->c, _("Swap capacity is limited to %dG."),
447                             SWAP_MAX / 1024);
448                         valid = 0;
449                 }
450
451                 /*
452                  * If we made it through that obstacle course, all is well.
453                  */
454
455                 if (valid)
456                         aura_dict_store(d, mountpoint, strlen(mountpoint) + 1, "", 1);
457         }
458
459         if (!found_root) {
460                 inform(a->c, _("You must include a / (root) subpartition."));
461                 valid = 0;
462         }
463
464         if (aura_dict_size(d) > 16) {
465                 inform(a->c, _("You cannot have more than 16 subpartitions "
466                     "on a single primary partition.  Remove some "
467                     "and try again."));
468                 valid = 0;
469         }
470
471         aura_dict_free(d);
472
473         return(valid);
474 }
475
476 static void
477 save_subpartition_selections(struct dfui_response *r, struct i_fn_args *a)
478 {
479         struct dfui_dataset *ds;
480         char tmpfsbacked;
481         const char *mountpoint, *capstring;
482         long capacity;
483         long bsize, fsize;
484         int softupdates;
485         int valid = 1;
486
487         subpartitions_free(storage_get_selected_slice(a->s));
488
489         for (ds = dfui_response_dataset_get_first(r); valid && ds != NULL;
490             ds = dfui_dataset_get_next(ds)) {
491                 mountpoint = dfui_dataset_get_value(ds, "mountpoint");
492                 capstring = dfui_dataset_get_value(ds, "capacity");
493
494                 if (expert) {
495                         softupdates =
496                             (strcmp(dfui_dataset_get_value(ds, "softupdates"), "Y") == 0);
497                         fsize = atol(dfui_dataset_get_value(ds, "fsize"));
498                         bsize = atol(dfui_dataset_get_value(ds, "bsize"));
499                         tmpfsbacked = (strcmp(dfui_dataset_get_value(ds, "tmpfsbacked"), "Y") == 0);
500                 } else {
501                         softupdates = (strcmp(mountpoint, "/") == 0 ? 0 : 1);
502                         tmpfsbacked = 0;
503                         fsize = -1;
504                         bsize = -1;
505                 }
506
507                 if (string_to_capacity(capstring, &capacity)) {
508                         subpartition_new_ufs(storage_get_selected_slice(a->s),
509                             mountpoint, capacity,
510                             strcasecmp(dfui_dataset_get_value(ds, "encrypted"), "Y") == 0,
511                             softupdates, fsize, bsize, tmpfsbacked);
512                 }
513         }
514 }
515
516 static void
517 populate_create_subpartitions_form(struct dfui_form *f, struct i_fn_args *a)
518 {
519         struct subpartition *sp;
520         struct dfui_dataset *ds;
521         char temp[32];
522         int mtpt;
523         long capacity;
524
525         if (slice_subpartition_first(storage_get_selected_slice(a->s)) != NULL) {
526                 /*
527                  * The user has already given us their subpartition
528                  * preferences, so use them here.
529                  */
530                 for (sp = slice_subpartition_first(storage_get_selected_slice(a->s));
531                      sp != NULL; sp = subpartition_next(sp)) {
532                         ds = dfui_dataset_new();
533                         dfui_dataset_celldata_add(ds, "mountpoint",
534                             subpartition_get_mountpoint(sp));
535                         dfui_dataset_celldata_add(ds, "capacity",
536                             capacity_to_string(subpartition_get_capacity(sp)));
537                         dfui_dataset_celldata_add(ds, "encrypted",
538                             subpartition_is_encrypted(sp) ? "Y" : "N");
539                         if (expert) {
540                                 dfui_dataset_celldata_add(ds, "softupdates",
541                                     subpartition_is_softupdated(sp) ? "Y" : "N");
542                                 dfui_dataset_celldata_add(ds, "tmpfsbacked",
543                                     subpartition_is_tmpfsbacked(sp) ? "Y" : "N");
544                                 snprintf(temp, 32, "%ld", subpartition_get_fsize(sp));
545                                 dfui_dataset_celldata_add(ds, "fsize",
546                                     temp);
547                                 snprintf(temp, 32, "%ld", subpartition_get_bsize(sp));
548                                 dfui_dataset_celldata_add(ds, "bsize",
549                                     temp);
550                         }
551                         dfui_form_dataset_add(f, ds);
552                 }
553         } else {
554                 /*
555                  * Otherwise, populate the form with datasets representing
556                  * reasonably-calculated defaults.  The defaults are chosen
557                  * based on the slice's total capacity and the machine's
558                  * total physical memory (for swap.)
559                  */
560                 for (mtpt = 0; def_mountpt[mtpt] != NULL; mtpt++) {
561                         capacity = default_capacity(a->s, mtpt);
562                         ds = dfui_dataset_new();
563                         dfui_dataset_celldata_add(ds, "mountpoint",
564                             def_mountpt[mtpt]);
565                         dfui_dataset_celldata_add(ds, "capacity",
566                             capacity_to_string(capacity));
567                         dfui_dataset_celldata_add(ds, "encrypted", "N");
568                         if (expert) {
569                                 dfui_dataset_celldata_add(ds, "softupdates",
570                                     strcmp(def_mountpt[mtpt], "/") != 0 ? "Y" : "N");
571                                 dfui_dataset_celldata_add(ds, "tmpfsbacked",
572                                     "N");
573                                 dfui_dataset_celldata_add(ds, "fsize",
574                                     capacity < 1024 ? "1024" : "2048");
575                                 dfui_dataset_celldata_add(ds, "bsize",
576                                     capacity < 1024 ? "8192" : "16384");
577                         }
578                         dfui_form_dataset_add(f, ds);
579                 }
580         }
581 }
582
583 static int
584 warn_subpartition_selections(struct i_fn_args *a)
585 {
586         int valid = 0;
587         struct aura_buffer *omit, *consequences;
588
589         omit = aura_buffer_new(2048);
590         consequences = aura_buffer_new(2048);
591
592         valid = check_capacity(a);
593         if (subpartition_find(storage_get_selected_slice(a->s), "/var") == NULL) {
594                 aura_buffer_cat(omit, "/var ");
595                 aura_buffer_cat(consequences, _("/var will be a plain dir in /\n"));
596         }
597         if (subpartition_find(storage_get_selected_slice(a->s), "/usr") == NULL) {
598                 aura_buffer_cat(omit, "/usr ");
599                 aura_buffer_cat(consequences, _("/usr will be a plain dir in /\n"));
600         }
601         if (subpartition_find(storage_get_selected_slice(a->s), "/tmp") == NULL) {
602                 aura_buffer_cat(omit, "/tmp ");
603                 aura_buffer_cat(consequences, _("/tmp will be symlinked to /var/tmp\n"));
604         }
605         if (subpartition_find(storage_get_selected_slice(a->s), "/home") == NULL) {
606                 aura_buffer_cat(omit, "/home ");
607                 aura_buffer_cat(consequences, _("/home will be symlinked to /usr/home\n"));
608         }
609
610         if (valid && aura_buffer_len(omit) > 0) {
611                 switch (dfui_be_present_dialog(a->c, _("Really omit?"),
612                     _("Omit Subpartition(s)|Return to Create Subpartitions"),
613                     _("You have elected to not have the following "
614                     "subpartition(s):\n\n%s\n\n"
615                     "The ramifications of these subpartition(s) being "
616                     "missing will be:\n\n%s\n"
617                     "Is this really what you want to do?"),
618                     aura_buffer_buf(omit), aura_buffer_buf(consequences))) {
619                 case 1:
620                         valid = 1;
621                         break;
622                 case 2:
623                         valid = 0;
624                         break;
625                 default:
626                         abort_backend();
627                 }
628         }
629
630         aura_buffer_free(omit);
631         aura_buffer_free(consequences);
632
633         return(!valid);
634 }
635
636 static int
637 warn_encrypted_root(struct i_fn_args *a)
638 {
639         int valid = 1;
640         struct subpartition *sp;
641
642         sp = subpartition_find(storage_get_selected_slice(a->s), "/");
643         if (sp == NULL)
644                 return(!valid);
645
646         if (subpartition_is_encrypted(sp)) {
647                 switch (dfui_be_present_dialog(a->c, _("root cannot be encrypted"),
648                     _("Leave root unencrypted|Return to Create Subpartitions"),
649                     _("You have selected encryption for the root partition which "
650                     "is not supported."))) {
651                 case 1:
652                         subpartition_clr_encrypted(sp);
653                         valid = 1;
654                         break;
655                 case 2:
656                         valid = 0;
657                         break;
658                 default:
659                         abort_backend();
660                 }
661         }
662
663         return(!valid);
664 }
665
666 static struct dfui_form *
667 make_create_subpartitions_form(struct i_fn_args *a)
668 {
669         struct dfui_field *fi;
670         struct dfui_form *f;
671         char msg_buf[1][1024];
672
673         snprintf(msg_buf[0], sizeof(msg_buf[0]),
674             _("Subpartitions further divide a primary partition for "
675             "use with %s.  Some reasons you may want "
676             "a set of subpartitions are:\n\n"
677             "- you want to restrict how much data can be written "
678             "to certain parts of the primary partition, to quell "
679             "denial-of-service attacks; and\n"
680             "- you want to speed up access to data on the disk."
681             ""), OPERATING_SYSTEM_NAME);
682
683         f = dfui_form_create(
684             "create_subpartitions",
685             _("Create Subpartitions"),
686             _("Set up the subpartitions (also known as just `partitions' "
687             "in BSD tradition) you want to have on this primary "
688             "partition.\n\n"
689             "For Capacity, use 'M' to indicate megabytes, 'G' to "
690             "indicate gigabytes, and so on (up to 'E'.) A single '*' "
691             "indicates 'use the remaining space on the primary partition'."),
692
693             msg_buf[0],
694
695             "p", "special", "dfinstaller_create_subpartitions",
696             "p", "minimum_width","64",
697
698             "f", "mountpoint", _("Mountpoint"), "", "",
699             "f", "capacity", _("Capacity"), "", "",
700
701             "f", "encrypted", _("Encrypted"), "", "",
702             "p", "control", "checkbox",
703
704             "a", "ok", _("Accept and Create"), "", "",
705             "a", "cancel",
706             (disk_get_formatted(storage_get_selected_disk(a->s)) ?
707             _("Return to Select Disk") :
708             _("Return to Select Primary Partition")), "", "",
709             "p", "accelerator", "ESC",
710
711             NULL
712         );
713
714         dfui_form_set_multiple(f, 1);
715         dfui_form_set_extensible(f, 1);
716
717         if (expert) {
718                 fi = dfui_form_field_add(f, "softupdates",
719                     dfui_info_new(_("Softupdates"), "", ""));
720                 dfui_field_property_set(fi, "control", "checkbox");
721
722                 fi = dfui_form_field_add(f, "tmpfsbacked",
723                     dfui_info_new(_("TMPFS"), "", ""));
724                 dfui_field_property_set(fi, "control", "checkbox");
725
726                 fi = dfui_form_field_add(f, "fsize",
727                     dfui_info_new(_("Frag Sz"), "", ""));
728
729                 fi = dfui_form_field_add(f, "bsize",
730                     dfui_info_new(_("Block Sz"), "", ""));
731
732                 dfui_form_action_add(f, "switch",
733                     dfui_info_new(_("Switch to Normal Mode"), "", ""));
734         } else {
735                 dfui_form_action_add(f, "switch",
736                     dfui_info_new(_("Switch to Expert Mode"), "", ""));
737         }
738
739         return(f);
740 }
741
742 /*
743  * Returns:
744  *      -1 = the form should be redisplayed
745  *       0 = failure, function is over
746  *       1 = success, function is over
747  */
748 static int
749 show_create_subpartitions_form(struct dfui_form *f, struct i_fn_args *a)
750 {
751         struct dfui_dataset *ds;
752         struct dfui_response *r;
753
754         for (;;) {
755                 if (dfui_form_dataset_get_first(f) == NULL)
756                         populate_create_subpartitions_form(f, a);
757
758                 if (!dfui_be_present(a->c, f, &r))
759                         abort_backend();
760
761                 if (strcmp(dfui_response_get_action_id(r), "cancel") == 0) {
762                         dfui_response_free(r);
763                         return(0);
764                 } else if (strcmp(dfui_response_get_action_id(r), "switch") == 0) {
765                         if (check_subpartition_selections(r, a)) {
766                                 save_subpartition_selections(r, a);
767                                 expert = expert ? 0 : 1;
768                                 dfui_response_free(r);
769                                 return(-1);
770                         }
771                 } else {
772                         if (check_subpartition_selections(r, a)) {
773                                 save_subpartition_selections(r, a);
774                                 if (!warn_subpartition_selections(a) &&
775                                     !warn_encrypted_root(a)) {
776                                         if (!create_subpartitions(a)) {
777                                                 inform(a->c, _("The subpartitions you chose were "
778                                                         "not correctly created, and the "
779                                                         "primary partition may "
780                                                         "now be in an inconsistent state. "
781                                                         "We recommend re-formatting it "
782                                                         "before proceeding."));
783                                                 dfui_response_free(r);
784                                                 return(0);
785                                         } else {
786                                                 dfui_response_free(r);
787                                                 return(1);
788                                         }
789                                 }
790                         }
791                 }
792
793                 dfui_form_datasets_free(f);
794                 /* dfui_form_datasets_add_from_response(f, r); */
795                 for (ds = dfui_response_dataset_get_first(r); ds != NULL;
796                     ds = dfui_dataset_get_next(ds)) {
797                         dfui_form_dataset_add(f, dfui_dataset_dup(ds));
798                 }
799         }
800 }
801
802 void
803 fn_create_subpartitions_ufs(struct i_fn_args *a)
804 {
805         struct dfui_form *f;
806         int done = 0;
807
808         a->result = 0;
809         while (!done) {
810                 f = make_create_subpartitions_form(a);
811                 switch (show_create_subpartitions_form(f, a)) {
812                 case -1:
813                         done = 0;
814                         break;
815                 case 0:
816                         done = 1;
817                         a->result = 0;
818                         break;
819                 case 1:
820                         done = 1;
821                         a->result = 1;
822                         break;
823                 }
824                 dfui_form_free(f);
825         }
826 }