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 int      warn_encrypted_boot(struct i_fn_args *);
  76 static struct dfui_form *make_create_subpartitions_form(struct i_fn_args *);
  77 static int      show_create_subpartitions_form(struct dfui_form *, struct i_fn_args *);
  78
  79 static const char *def_mountpt[]  = {"/boot", "swap", "/", NULL};
  80 static int expert = 0;
  81
  82 /*
  83  * Given a set of subpartitions-to-be in the selected slice,
  84  * create them.
  85  */
  86 static int
  87 create_subpartitions(struct i_fn_args *a)
  88 {
  89         struct subpartition *sp;
  90         struct commands *cmds;
  91         int result = 0;
  92         int num_partitions;
  93
  94         cmds = commands_new();
  95         if (!is_file("%sinstall.disklabel.%s",
  96             a->tmp,
  97             slice_get_device_name(storage_get_selected_slice(a->s)))) {
  98                 /*
  99                  * Get a copy of the 'virgin' disklabel.
 100                  * XXX It might make more sense for this to
 101                  * happen right after format_slice() instead.
 102                  */
 103                 command_add(cmds, "%s%s -r %s >%sinstall.disklabel.%s",
 104                     a->os_root, cmd_name(a, "DISKLABEL64"),
 105                     slice_get_device_name(storage_get_selected_slice(a->s)),
 106                     a->tmp,
 107                     slice_get_device_name(storage_get_selected_slice(a->s)));
 108         }
 109
 110         /*
 111          * Weave together a new disklabel out the of the 'virgin'
 112          * disklabel, and the user's subpartition choices.
 113          */
 114
 115         /*
 116          * Take everything from the 'virgin' disklabel up until the
 117          * '16 partitions' line.
 118          */
 119         num_partitions = 16;
 120         command_add(cmds, "%s%s '$2==\"partitions:\" || cut { cut = 1 } !cut { print $0 }' <%sinstall.disklabel.%s >%sinstall.disklabel",
 121             a->os_root, cmd_name(a, "AWK"),
 122             a->tmp,
 123             slice_get_device_name(storage_get_selected_slice(a->s)),
 124             a->tmp);
 125
 126         /*
 127          * 16 partitions:
 128          * #          size     offset    fstype
 129          *   c:   16383969          0    unused #    7999.985MB
 130          */
 131
 132         command_add(cmds, "%s%s '%d partitions:' >>%sinstall.disklabel",
 133             a->os_root, cmd_name(a, "ECHO"), num_partitions ,a->tmp);
 134         command_add(cmds, "%s%s '%s' >>%sinstall.disklabel",
 135             a->os_root, cmd_name(a, "ECHO"),
 136             "#          size     offset    fstype",
 137             a->tmp);
 138
 139 #ifdef DEBUG
 140         for (sp = slice_subpartition_first(storage_get_selected_slice(a->s));
 141              sp != NULL; sp = subpartition_next(sp)) {
 142                 command_add(cmds, "%s%s 'mountpoint: %s device: %s'",
 143                      a->os_root, cmd_name(a, "ECHO"),
 144                      subpartition_get_mountpoint(sp),
 145                      subpartition_get_device_name(sp));
 146         }
 147 #endif
 148
 149         /*
 150          * Write a line for each subpartition the user wants.
 151          */
 152         for (sp = slice_subpartition_first(storage_get_selected_slice(a->s));
 153              sp != NULL; sp = subpartition_next(sp)) {
 154                 if (subpartition_is_tmpfsbacked(sp)) {
 155                         continue;
 156                 }
 157                 if (subpartition_is_swap(sp)) {
 158                         command_add(cmds, "%s%s '  %c:\t%s\t*\tswap' >>%sinstall.disklabel",
 159                             a->os_root, cmd_name(a, "ECHO"),
 160                             subpartition_get_letter(sp),
 161                             capacity_to_string(subpartition_get_capacity(sp)),
 162                             a->tmp);
 163                 } else if (strcmp(subpartition_get_mountpoint(sp), "/boot") == 0) {
 164                         command_add(cmds, "%s%s '  %c:\t%s\t0\t4.2BSD' >>%sinstall.disklabel",
 165                             a->os_root, cmd_name(a, "ECHO"),
 166                             subpartition_get_letter(sp),
 167                             capacity_to_string(subpartition_get_capacity(sp)),
 168                             a->tmp);
 169                 } else {
 170                         command_add(cmds, "%s%s '  %c:\t%s\t*\tHAMMER' >>%sinstall.disklabel",
 171                             a->os_root, cmd_name(a, "ECHO"),
 172                             subpartition_get_letter(sp),
 173                             capacity_to_string(subpartition_get_capacity(sp)),
 174                             a->tmp);
 175                 }
 176         }
 177         temp_file_add(a, "install.disklabel");
 178
 179         /*
 180          * Label the slice from the disklabel we just wove together.
 181          */
 182         command_add(cmds, "%s%s -R -B -r %s %sinstall.disklabel",
 183             a->os_root, cmd_name(a, "DISKLABEL64"),
 184             slice_get_device_name(storage_get_selected_slice(a->s)),
 185             a->tmp);
 186
 187         /*
 188          * Create a snapshot of the disklabel we just created
 189          * for debugging inspection in the log.
 190          */
 191         command_add(cmds, "%s%s %s",
 192             a->os_root, cmd_name(a, "DISKLABEL64"),
 193             slice_get_device_name(storage_get_selected_slice(a->s)));
 194
 195         /*
 196          * If encryption was specified, load dm(4).
 197          */
 198         for (sp = slice_subpartition_first(storage_get_selected_slice(a->s));
 199              sp != NULL; sp = subpartition_next(sp)) {
 200                 if (subpartition_is_encrypted(sp)) {
 201                         fn_get_passphrase(a);
 202                         break;
 203                 }
 204         }
 205
 206         /*
 207          * Create filesystems on the newly-created subpartitions.
 208          */
 209         for (sp = slice_subpartition_first(storage_get_selected_slice(a->s));
 210              sp != NULL; sp = subpartition_next(sp)) {
 211                 if (subpartition_is_swap(sp) || subpartition_is_tmpfsbacked(sp)) {
 212                         if (subpartition_is_swap(sp) &&
 213                             subpartition_is_encrypted(sp)) {
 214                                 command_add(cmds,
 215                                     "%s%s -d /tmp/t1 luksFormat %sdev/%s",
 216                                     a->os_root, cmd_name(a, "CRYPTSETUP"),
 217                                     a->os_root,
 218                                     subpartition_get_device_name(sp));
 219                                 command_add(cmds,
 220                                     "%s%s -d /tmp/t1 luksOpen %sdev/%s swap",
 221                                     a->os_root, cmd_name(a, "CRYPTSETUP"),
 222                                     a->os_root,
 223                                     subpartition_get_device_name(sp));
 224                         }
 225                         continue;
 226                 }
 227
 228                 if (strcmp(subpartition_get_mountpoint(sp), "/boot") == 0) {
 229                         command_add(cmds, "%s%s %sdev/%s",
 230                             a->os_root, cmd_name(a, "NEWFS"),
 231                             a->os_root,
 232                             subpartition_get_device_name(sp));
 233                 } else {
 234                         if (subpartition_is_encrypted(sp)) {
 235                                 command_add(cmds,
 236                                     "%s%s -d /tmp/t1 luksFormat %sdev/%s",
 237                                     a->os_root, cmd_name(a, "CRYPTSETUP"),
 238                                     a->os_root,
 239                                     subpartition_get_device_name(sp));
 240                                 command_add(cmds,
 241                                     "%s%s -d /tmp/t1 luksOpen %sdev/%s root",
 242                                     a->os_root, cmd_name(a, "CRYPTSETUP"),
 243                                     a->os_root,
 244                                     subpartition_get_device_name(sp));
 245                         }
 246                         command_add(cmds, "%s%s -f -L ROOT %sdev/%s",
 247                             a->os_root, cmd_name(a, "NEWFS_HAMMER"),
 248                             a->os_root,
 249                             subpartition_is_encrypted(sp) ?
 250                             "mapper/root" : subpartition_get_device_name(sp));
 251                 }
 252         }
 253
 254         result = commands_execute(a, cmds);
 255         commands_free(cmds);
 256         return(result);
 257 }
 258
 259 static long
 260 default_capacity(struct storage *s, const char *mtpt)
 261 {
 262         unsigned long boot, root, swap;
 263         unsigned long capacity;
 264         unsigned long mem;
 265
 266         capacity = slice_get_capacity(storage_get_selected_slice(s));
 267         mem = storage_get_memsize(s);
 268
 269         /*
 270          * Try to get 768M for /boot, but if space is tight go down to 128M
 271          * in 128M steps.
 272          * For swap, start with 2*mem but take less if space is tight
 273          * (minimum is 384).
 274          * Rest goes to / (which is at least 75% slice size).
 275          */
 276
 277         root = capacity / 4 * 3;
 278         swap = 2 * mem;
 279         if (swap > SWAP_MAX)
 280                 swap = SWAP_MAX;
 281         boot = 768;
 282         while (boot + root > capacity - 384)
 283                 boot -= 128;
 284         if (boot + root + swap > capacity)
 285                 swap = capacity - boot - root;
 286
 287         if (capacity < DISK_MIN)
 288                 return(-1);
 289         else if (strcmp(mtpt, "/boot") == 0)
 290                 return(boot);
 291         else if (strcmp(mtpt, "swap") == 0)
 292                 return(swap);
 293         else if (strcmp(mtpt, "/") == 0)
 294                 return(-1);
 295
 296         /* shouldn't ever happen */
 297         return(-1);
 298 }
 299
 300 static int
 301 check_capacity(struct i_fn_args *a)
 302 {
 303         struct subpartition *sp;
 304         long min_capacity[] = {128, 0, DISK_MIN - 128, 0};
 305         unsigned long total_capacity = 0;
 306         unsigned long remaining_capacity;
 307         int mtpt, warn_smallpart = 0;
 308
 309         remaining_capacity = slice_get_capacity(storage_get_selected_slice(a->s));
 310         for (sp = slice_subpartition_first(storage_get_selected_slice(a->s));
 311              sp != NULL; sp = subpartition_next(sp)) {
 312                 if (subpartition_get_capacity(sp) != -1)
 313                         remaining_capacity -= subpartition_get_capacity(sp);
 314         }
 315
 316         for (sp = slice_subpartition_first(storage_get_selected_slice(a->s));
 317              sp != NULL; sp = subpartition_next(sp)) {
 318                 long subpart_capacity = subpartition_get_capacity(sp);
 319                 const char *mountpt = subpartition_get_mountpoint(sp);
 320
 321                 if (subpart_capacity == -1)
 322                         total_capacity++;
 323                 else
 324                         total_capacity += subpart_capacity;
 325                 for (mtpt = 0; def_mountpt[mtpt] != NULL; mtpt++) {
 326                         if (strcmp(mountpt, def_mountpt[mtpt]) == 0 &&
 327                             subpart_capacity < min_capacity[mtpt] &&
 328                             subpart_capacity != -1) {
 329                                 inform(a->c, _("WARNING: The size (%ldM) specified for "
 330                                     "the %s subpartition is too small. It "
 331                                     "should be at least %ldM or you will "
 332                                     "risk running out of space during "
 333                                     "the installation."),
 334                                     subpart_capacity, mountpt,
 335                                     min_capacity[mtpt]);
 336                         }
 337                 }
 338                 if (strcmp(mountpt, "/boot") != 0 &&
 339                     strcmp(mountpt, "swap") != 0) {
 340                         if ((subpart_capacity == -1 && remaining_capacity < HAMMER_MIN) ||
 341                             (subpart_capacity != -1 && subpart_capacity < HAMMER_MIN))
 342                                 warn_smallpart++;
 343                 }
 344         }
 345
 346         if (total_capacity > slice_get_capacity(storage_get_selected_slice(a->s))) {
 347                 inform(a->c, _("The space allocated to all of your selected "
 348                     "subpartitions (%luM) exceeds the total "
 349                     "capacity of the selected primary partition "
 350                     "(%luM). Remove some subpartitions or choose "
 351                     "a smaller size for them and try again."),
 352                     total_capacity, slice_get_capacity(storage_get_selected_slice(a->s)));
 353                 return(0);
 354         }
 355
 356         if (warn_smallpart)
 357                 return (confirm_dangerous_action(a->c,
 358                     _("WARNING: HAMMER filesystems less than 50GB are "
 359                     "not recommended!\n"
 360                     "You may have to run 'hammer prune-everything' and "
 361                     "'hammer reblock'\n"
 362                     "quite often, even if using a nohistory mount.")));
 363
 364         return(1);
 365 }
 366
 367 static int
 368 check_subpartition_selections(struct dfui_response *r, struct i_fn_args *a)
 369 {
 370         struct dfui_dataset *ds;
 371         struct dfui_dataset *star_ds = NULL;
 372         struct aura_dict *d;
 373         const char *mountpoint, *capstring;
 374         long capacity = 0;
 375         int found_root = 0;
 376         int valid = 1;
 377
 378         d = aura_dict_new(1, AURA_DICT_LIST);
 379
 380         if ((ds = dfui_response_dataset_get_first(r)) == NULL) {
 381                 inform(a->c, _("Please set up at least one subpartition."));
 382                 valid = 0;
 383         }
 384
 385         for (ds = dfui_response_dataset_get_first(r); valid && ds != NULL;
 386             ds = dfui_dataset_get_next(ds)) {
 387 #ifdef DEBUG
 388                 dfui_dataset_dump(ds);
 389 #endif
 390                 mountpoint = dfui_dataset_get_value(ds, "mountpoint");
 391                 capstring = dfui_dataset_get_value(ds, "capacity");
 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 to indicate "
 433                             "'use the rest of the primary partition', or it "
 434                             "must be a series of decimal digits ending with a "
 435                             "'M' (indicating megabytes) or a 'G' (indicating "
 436                             "gigabytes.)"));
 437                         valid = 0;
 438                 }
 439
 440                 /*
 441                  * Maybe remove this limit entirely?
 442                  */
 443                 if ((strcasecmp(mountpoint, "swap") == 0) &&
 444                     (capacity > SWAP_MAX)) {
 445                         inform(a->c, _("Swap capacity is limited to %dG."),
 446                             SWAP_MAX / 1024);
 447                         valid = 0;
 448                 }
 449
 450                 /*
 451                  * If we made it through that obstacle course, all is well.
 452                  */
 453
 454                 if (valid)
 455                         aura_dict_store(d, mountpoint, strlen(mountpoint) + 1, "", 1);
 456         }
 457
 458         if (!found_root) {
 459                 inform(a->c, _("You must include a / (root) subpartition."));
 460                 valid = 0;
 461         }
 462
 463         if (aura_dict_size(d) > 16) {
 464                 inform(a->c, _("You cannot have more than 16 subpartitions "
 465                     "on a single primary partition.  Remove some "
 466                     "and try again."));
 467                 valid = 0;
 468         }
 469
 470         aura_dict_free(d);
 471
 472         return(valid);
 473 }
 474
 475 static void
 476 save_subpartition_selections(struct dfui_response *r, struct i_fn_args *a)
 477 {
 478         struct dfui_dataset *ds;
 479         const char *mountpoint, *capstring;
 480         long capacity;
 481         int valid = 1;
 482
 483         subpartitions_free(storage_get_selected_slice(a->s));
 484
 485         for (ds = dfui_response_dataset_get_first(r); valid && ds != NULL;
 486             ds = dfui_dataset_get_next(ds)) {
 487                 mountpoint = dfui_dataset_get_value(ds, "mountpoint");
 488                 capstring = dfui_dataset_get_value(ds, "capacity");
 489
 490                 if (string_to_capacity(capstring, &capacity)) {
 491                         subpartition_new_hammer(storage_get_selected_slice(a->s),
 492                             mountpoint, capacity,
 493                             strcasecmp(dfui_dataset_get_value(ds, "encrypted"), "Y") == 0);
 494                 }
 495         }
 496 }
 497
 498 static void
 499 populate_create_subpartitions_form(struct dfui_form *f, struct i_fn_args *a)
 500 {
 501         struct subpartition *sp;
 502         struct dfui_dataset *ds;
 503         int i;
 504         long capacity;
 505
 506         if (slice_subpartition_first(storage_get_selected_slice(a->s)) != NULL) {
 507                 /*
 508                  * The user has already given us their subpartition
 509                  * preferences, so use them here.
 510                  */
 511                 for (sp = slice_subpartition_first(storage_get_selected_slice(a->s));
 512                      sp != NULL; sp = subpartition_next(sp)) {
 513                         ds = dfui_dataset_new();
 514                         dfui_dataset_celldata_add(ds, "mountpoint",
 515                             subpartition_get_mountpoint(sp));
 516                         dfui_dataset_celldata_add(ds, "capacity",
 517                             capacity_to_string(subpartition_get_capacity(sp)));
 518                         dfui_dataset_celldata_add(ds, "encrypted",
 519                             subpartition_is_encrypted(sp) ? "Y" : "N");
 520                         dfui_form_dataset_add(f, ds);
 521                 }
 522         } else {
 523                 /*
 524                  * Otherwise, populate the form with datasets representing
 525                  * reasonably-calculated defaults.  The defaults are chosen
 526                  * based on the slice's total capacity and the machine's
 527                  * total physical memory (for swap.)
 528                  */
 529                 for (i = 0; def_mountpt[i] != NULL; i++) {
 530                         capacity = default_capacity(a->s, def_mountpt[i]);
 531                         ds = dfui_dataset_new();
 532                         dfui_dataset_celldata_add(ds, "mountpoint",
 533                             def_mountpt[i]);
 534                         dfui_dataset_celldata_add(ds, "capacity",
 535                             capacity_to_string(capacity));
 536                         dfui_dataset_celldata_add(ds, "encrypted", "N");
 537                         dfui_form_dataset_add(f, ds);
 538                 }
 539         }
 540 }
 541
 542 static int
 543 warn_subpartition_selections(struct i_fn_args *a)
 544 {
 545         int valid = 0;
 546
 547         if (subpartition_find(storage_get_selected_slice(a->s), "/boot") == NULL) {
 548                 inform(a->c, _("The /boot partition must not be omitted."));
 549         } else if (subpartition_find(storage_get_selected_slice(a->s), "/home") != NULL ||
 550             subpartition_find(storage_get_selected_slice(a->s), "/tmp") != NULL ||
 551             subpartition_find(storage_get_selected_slice(a->s), "/usr") != NULL ||
 552             subpartition_find(storage_get_selected_slice(a->s), "/usr/obj") != NULL ||
 553             subpartition_find(storage_get_selected_slice(a->s), "/var") != NULL ||
 554             subpartition_find(storage_get_selected_slice(a->s), "/var/crash") != NULL ||
 555             subpartition_find(storage_get_selected_slice(a->s), "/var/tmp") != NULL) {
 556                 inform(a->c, _("Pseudo filesystems will automatically be created "
 557                         "for /home, /tmp, /usr, /usr/obj, /var, /var/crash "
 558                         "and /var/tmp and must not be specified."));
 559         } else {
 560                 valid = check_capacity(a);
 561         }
 562
 563         return(!valid);
 564 }
 565
 566 static int
 567 warn_encrypted_boot(struct i_fn_args *a)
 568 {
 569         int valid = 1;
 570
 571         struct subpartition *sp;
 572
 573         sp = subpartition_find(storage_get_selected_slice(a->s), "/boot");
 574         if (sp == NULL)
 575                 return(!valid);
 576
 577         if (subpartition_is_encrypted(sp)) {
 578                 switch (dfui_be_present_dialog(a->c, _("/boot cannot be encrypted"),
 579                     _("Leave /boot unencrypted|Return to Create Subpartitions"),
 580                     _("You have selected encryption for the /boot partition which "
 581                     "is not supported."))) {
 582                 case 1:
 583                         subpartition_clr_encrypted(sp);
 584                         valid = 1;
 585                         break;
 586                 case 2:
 587                         valid = 0;
 588                         break;
 589                 default:
 590                         abort_backend();
 591                 }
 592         }
 593
 594         return(!valid);
 595 }
 596
 597 static struct dfui_form *
 598 make_create_subpartitions_form(struct i_fn_args *a)
 599 {
 600         struct dfui_form *f;
 601         char msg_buf[1][1024];
 602
 603         snprintf(msg_buf[0], sizeof(msg_buf[0]),
 604             _("Subpartitions further divide a primary partition for "
 605             "use with %s.  Some reasons you may want "
 606             "a set of subpartitions are:\n\n"
 607             "- you want to restrict how much data can be written "
 608             "to certain parts of the primary partition, to quell "
 609             "denial-of-service attacks; and\n"
 610             "- you want to speed up access to data on the disk."
 611             ""), OPERATING_SYSTEM_NAME);
 612
 613         f = dfui_form_create(
 614             "create_subpartitions",
 615             _("Create Subpartitions"),
 616             _("Set up the subpartitions (also known as just `partitions' "
 617             "in BSD tradition) you want to have on this primary "
 618             "partition. In most cases you should be fine with "
 619             "the default settings.\n\n"
 620             "For Capacity, use 'M' to indicate megabytes, 'G' to "
 621             "indicate gigabytes, or a single '*' to indicate "
 622             "'use the remaining space on the primary partition'."),
 623
 624             msg_buf[0],
 625
 626             "p", "special", "dfinstaller_create_subpartitions",
 627             "p", "minimum_width","64",
 628
 629             "f", "mountpoint", _("Mountpoint"), "", "",
 630             "f", "capacity", _("Capacity"), "", "",
 631
 632             "f", "encrypted", _("Encrypted"), "", "",
 633             "p", "control", "checkbox",
 634
 635             "a", "ok", _("Accept and Create"), "", "",
 636             "a", "cancel",
 637             (disk_get_formatted(storage_get_selected_disk(a->s)) ?
 638             _("Return to Select Disk") :
 639             _("Return to Select Primary Partition")), "", "",
 640             "p", "accelerator", "ESC",
 641
 642             NULL
 643         );
 644
 645         dfui_form_set_multiple(f, 1);
 646         dfui_form_set_extensible(f, 1);
 647         /*
 648          * Remove ATM until HAMMER installer support is better
 649          * dfui_form_set_extensible(f, 1);
 650          */
 651 #if 0
 652         if (expert) {
 653                 fi = dfui_form_field_add(f, "softupdates",
 654                     dfui_info_new(_("Softupdates"), "", ""));
 655                 dfui_field_property_set(fi, "control", "checkbox");
 656
 657                 fi = dfui_form_field_add(f, "tmpfsbacked",
 658                     dfui_info_new(_("TMPFS"), "", ""));
 659                 dfui_field_property_set(fi, "control", "checkbox");
 660
 661                 fi = dfui_form_field_add(f, "fsize",
 662                     dfui_info_new(_("Frag Sz"), "", ""));
 663
 664                 fi = dfui_form_field_add(f, "bsize",
 665                     dfui_info_new(_("Block Sz"), "", ""));
 666
 667                 dfui_form_action_add(f, "switch",
 668                     dfui_info_new(_("Switch to Normal Mode"), "", ""));
 669         } else {
 670                 dfui_form_action_add(f, "switch",
 671                     dfui_info_new(_("Switch to Expert Mode"), "", ""));
 672         }
 673 #endif
 674         return(f);
 675 }
 676
 677 /*
 678  * Returns:
 679  *      -1 = the form should be redisplayed
 680  *       0 = failure, function is over
 681  *       1 = success, function is over
 682  */
 683 static int
 684 show_create_subpartitions_form(struct dfui_form *f, struct i_fn_args *a)
 685 {
 686         struct dfui_dataset *ds;
 687         struct dfui_response *r;
 688
 689         for (;;) {
 690                 if (dfui_form_dataset_get_first(f) == NULL)
 691                         populate_create_subpartitions_form(f, a);
 692
 693                 if (!dfui_be_present(a->c, f, &r))
 694                         abort_backend();
 695
 696                 if (strcmp(dfui_response_get_action_id(r), "cancel") == 0) {
 697                         dfui_response_free(r);
 698                         return(0);
 699                 } else if (strcmp(dfui_response_get_action_id(r), "switch") == 0) {
 700                         if (check_subpartition_selections(r, a)) {
 701                                 save_subpartition_selections(r, a);
 702                                 expert = expert ? 0 : 1;
 703                                 dfui_response_free(r);
 704                                 return(-1);
 705                         }
 706                 } else {
 707                         if (check_subpartition_selections(r, a)) {
 708                                 save_subpartition_selections(r, a);
 709                                 if (!warn_subpartition_selections(a) &&
 710                                     !warn_encrypted_boot(a)) {
 711                                         if (!create_subpartitions(a)) {
 712                                                 inform(a->c, _("The subpartitions you chose were "
 713                                                         "not correctly created, and the "
 714                                                         "primary partition may "
 715                                                         "now be in an inconsistent state. "
 716                                                         "We recommend re-formatting it "
 717                                                         "before proceeding."));
 718                                                 dfui_response_free(r);
 719                                                 return(0);
 720                                         } else {
 721                                                 dfui_response_free(r);
 722                                                 return(1);
 723                                         }
 724                                 }
 725                         }
 726                 }
 727
 728                 dfui_form_datasets_free(f);
 729                 /* dfui_form_datasets_add_from_response(f, r); */
 730                 for (ds = dfui_response_dataset_get_first(r); ds != NULL;
 731                     ds = dfui_dataset_get_next(ds)) {
 732                         dfui_form_dataset_add(f, dfui_dataset_dup(ds));
 733                 }
 734         }
 735 }
 736
 737 /*
 738  * fn_create_subpartitions_hammer: let the user specify what subpartitions they
 739  * want on the disk, how large each should be, and where it should be mounted.
 740  */
 741 void
 742 fn_create_subpartitions_hammer(struct i_fn_args *a)
 743 {
 744         struct dfui_form *f;
 745         int done = 0;
 746
 747         a->result = 0;
 748         while (!done) {
 749                 f = make_create_subpartitions_form(a);
 750                 switch (show_create_subpartitions_form(f, a)) {
 751                 case -1:
 752                         done = 0;
 753                         break;
 754                 case 0:
 755                         done = 1;
 756                         a->result = 0;
 757                         break;
 758                 case 1:
 759                         done = 1;
 760                         a->result = 1;
 761                         break;
 762                 }
 763                 dfui_form_free(f);
 764         }
 765 }