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 %sdev/%s",
 212                                     a->os_root, cmd_name(a, "CRYPTSETUP"),
 213                                     a->os_root,
 214                                     subpartition_get_device_name(sp));
 215                                 command_add(cmds,
 216                                     "%s%s -d /tmp/t1 luksOpen %sdev/%s swap",
 217                                     a->os_root, cmd_name(a, "CRYPTSETUP"),
 218                                     a->os_root,
 219                                     subpartition_get_device_name(sp));
 220                         }
 221                         continue;
 222                 }
 223
 224                 if (subpartition_is_encrypted(sp) &&
 225                     strcmp(subpartition_get_mountpoint(sp), "/") != 0) {
 226                         command_add(cmds,
 227                             "%s%s -d /tmp/t1 luksFormat %sdev/%s",
 228                             a->os_root, cmd_name(a, "CRYPTSETUP"),
 229                             a->os_root,
 230                             subpartition_get_device_name(sp));
 231                         command_add(cmds,
 232                             "%s%s -d /tmp/t1 luksOpen %sdev/%s %s",
 233                             a->os_root, cmd_name(a, "CRYPTSETUP"),
 234                             a->os_root,
 235                             subpartition_get_device_name(sp),
 236                             subpartition_get_mountpoint(sp) + 1);
 237                         command_add(cmds, "%s%s%s -b %ld -f %ld %sdev/mapper/%s",
 238                             a->os_root, cmd_name(a, "NEWFS"),
 239                             subpartition_is_softupdated(sp) ? " -U" : "",
 240                             subpartition_get_bsize(sp),
 241                             subpartition_get_fsize(sp),
 242                             a->os_root,
 243                             subpartition_get_mountpoint(sp) + 1);
 244                 } else {
 245                         command_add(cmds, "%s%s%s -b %ld -f %ld %sdev/%s",
 246                             a->os_root, cmd_name(a, "NEWFS"),
 247                             subpartition_is_softupdated(sp) ? " -U" : "",
 248                             subpartition_get_bsize(sp),
 249                             subpartition_get_fsize(sp),
 250                             a->os_root,
 251                             subpartition_get_device_name(sp));
 252                 }
 253         }
 254
 255         result = commands_execute(a, cmds);
 256         commands_free(cmds);
 257         return(result);
 258 }
 259
 260 static long
 261 default_capacity(struct storage *s, int mtpt)
 262 {
 263         unsigned long swap;
 264         unsigned long capacity;
 265         unsigned long mem;
 266
 267         if (mtpt == MTPT_HOME)
 268                 return(-1);
 269
 270         capacity = slice_get_capacity(storage_get_selected_slice(s));
 271         mem = storage_get_memsize(s);
 272         swap = 2 * mem;
 273         if (mem > (capacity / 2) || capacity < 4096)
 274                 swap = mem;
 275         if (mem > capacity)
 276                 swap = capacity / 2;
 277         if (swap > SWAP_MAX)
 278                 swap = SWAP_MAX;
 279
 280         if (capacity < DISK_MIN) {
 281                 /*
 282                  * For the purposes of this installer:
 283                  * can't be done.  Sorry.
 284                  */
 285                 return(-1);
 286         } else if (capacity < 4096) {
 287                 switch (mtpt) {
 288                 case MTPT_ROOT: return(320);
 289                 case MTPT_SWAP: return(swap);
 290                 case MTPT_VAR:  return(128);
 291                 case MTPT_TMP:  return(128);
 292                 case MTPT_USR:  return(1472);
 293                 }
 294         } else if (capacity < 10240) {
 295                 switch (mtpt) {
 296                 case MTPT_ROOT: return(640);
 297                 case MTPT_SWAP: return(swap);
 298                 case MTPT_VAR:  return(256);
 299                 case MTPT_TMP:  return(256);
 300                 case MTPT_USR:  return(2688);
 301                 }
 302         } else {
 303                 switch (mtpt) {
 304                 case MTPT_ROOT: return(768);
 305                 case MTPT_SWAP: return(swap);
 306                 case MTPT_VAR:  return(256);
 307                 case MTPT_TMP:  return(256);
 308                 case MTPT_USR:  return(7680);
 309                 }
 310         }
 311         /* shouldn't ever happen */
 312         return(-1);
 313 }
 314
 315 static int
 316 check_capacity(struct i_fn_args *a)
 317 {
 318         struct subpartition *sp;
 319         long min_capacity[] = {320, 0, 16, 0, 1472, 0, 0};
 320         unsigned long total_capacity = 0;
 321         int mtpt;
 322
 323         if (subpartition_find(storage_get_selected_slice(a->s), "/usr") == NULL)
 324                 min_capacity[MTPT_ROOT] += min_capacity[MTPT_USR];
 325
 326         for (sp = slice_subpartition_first(storage_get_selected_slice(a->s));
 327              sp != NULL; sp = subpartition_next(sp)) {
 328                 long subpart_capacity = subpartition_get_capacity(sp);
 329                 const char *mountpt = subpartition_get_mountpoint(sp);
 330
 331                 if (subpart_capacity == -1)
 332                         total_capacity++;
 333                 else
 334                         total_capacity += subpart_capacity;
 335                 for (mtpt = 0; def_mountpt[mtpt] != NULL; mtpt++) {
 336                         if (strcmp(mountpt, def_mountpt[mtpt]) == 0 &&
 337                             subpart_capacity < min_capacity[mtpt] &&
 338                             subpart_capacity != -1) {
 339                                 inform(a->c, _("WARNING: The size (%ldM) specified for "
 340                                     "the %s subpartition is too small. It "
 341                                     "should be at least %ldM or you will "
 342                                     "risk running out of space during "
 343                                     "the installation."),
 344                                     subpart_capacity, mountpt,
 345                                     min_capacity[mtpt]);
 346                         }
 347                 }
 348         }
 349
 350         if (total_capacity > slice_get_capacity(storage_get_selected_slice(a->s))) {
 351                 inform(a->c, _("The space allocated to all of your selected "
 352                     "subpartitions (%luM) exceeds the total "
 353                     "capacity of the selected primary partition "
 354                     "(%luM). Remove some subpartitions or choose "
 355                     "a smaller size for them and try again."),
 356                     total_capacity, slice_get_capacity(storage_get_selected_slice(a->s)));
 357                 return(0);
 358         }
 359
 360         return(1);
 361 }
 362
 363 static int
 364 check_subpartition_selections(struct dfui_response *r, struct i_fn_args *a)
 365 {
 366         struct dfui_dataset *ds;
 367         struct dfui_dataset *star_ds = NULL;
 368         struct aura_dict *d;
 369         const char *mountpoint, *capstring;
 370         long capacity = 0;
 371         int found_root = 0;
 372         int valid = 1;
 373
 374         d = aura_dict_new(1, AURA_DICT_LIST);
 375
 376         if ((ds = dfui_response_dataset_get_first(r)) == NULL) {
 377                 inform(a->c, _("Please set up at least one subpartition."));
 378                 valid = 0;
 379         }
 380
 381         for (ds = dfui_response_dataset_get_first(r); valid && ds != NULL;
 382             ds = dfui_dataset_get_next(ds)) {
 383 #ifdef DEBUG
 384                 dfui_dataset_dump(ds);
 385 #endif
 386                 mountpoint = dfui_dataset_get_value(ds, "mountpoint");
 387                 capstring = dfui_dataset_get_value(ds, "capacity");
 388
 389                 if (expert) {
 390                         int tmpfsbacked;
 391
 392                         tmpfsbacked = (strcmp(dfui_dataset_get_value(ds, "tmpfsbacked"), "Y") == 0);
 393                         if (tmpfsbacked && strcmp(mountpoint, "/") == 0) {
 394                                 inform(a->c, _("/ cannot be TMPFS backed."));
 395                                 valid = 0;
 396                         }
 397                 }
 398
 399                 if (aura_dict_exists(d, mountpoint, strlen(mountpoint) + 1)) {
 400                         inform(a->c, _("The same mount point cannot be specified "
 401                             "for two different subpartitions."));
 402                         valid = 0;
 403                 }
 404
 405                 if (strcmp(mountpoint, "/") == 0)
 406                         found_root = 1;
 407
 408                 if (strcmp(capstring, "*") == 0) {
 409                         if (star_ds != NULL) {
 410                                 inform(a->c, _("You cannot have more than one subpartition "
 411                                     "with a '*' capacity (meaning 'use the remainder "
 412                                     "of the primary partition'.)"));
 413                                 valid = 0;
 414                         } else {
 415                                 star_ds = ds;
 416                         }
 417                 }
 418
 419                 if (!(!strcasecmp(mountpoint, "swap") || mountpoint[0] == '/')) {
 420                         inform(a->c, _("Mount point must be either 'swap', or it must "
 421                             "start with a '/'."));
 422                         valid = 0;
 423                 }
 424
 425                 if (strpbrk(mountpoint, " \\\"'`") != NULL) {
 426                         inform(a->c, _("Mount point may not contain the following "
 427                             "characters: blank space, backslash, or "
 428                             "single, double, or back quotes."));
 429                         valid = 0;
 430                 }
 431
 432                 if (strlen(capstring) == 0) {
 433                         inform(a->c, _("A capacity must be specified."));
 434                         valid = 0;
 435                 }
 436
 437                 if (!string_to_capacity(capstring, &capacity)) {
 438                         inform(a->c, _("Capacity must be either a '*' symbol to indicate "
 439                             "'use the rest of the primary partition', or it "
 440                             "must be a series of decimal digits ending with a "
 441                             "'M' (indicating megabytes) or a 'G' (indicating "
 442                             "gigabytes.)"));
 443                         valid = 0;
 444                 }
 445
 446                 /*
 447                  * Maybe remove this limit entirely?
 448                  */
 449                 if ((strcasecmp(mountpoint, "swap") == 0) &&
 450                     (capacity > SWAP_MAX)) {
 451                         inform(a->c, _("Swap capacity is limited to %dG."),
 452                             SWAP_MAX / 1024);
 453                         valid = 0;
 454                 }
 455
 456                 /*
 457                  * If we made it through that obstacle course, all is well.
 458                  */
 459
 460                 if (valid)
 461                         aura_dict_store(d, mountpoint, strlen(mountpoint) + 1, "", 1);
 462         }
 463
 464         if (!found_root) {
 465                 inform(a->c, _("You must include a / (root) subpartition."));
 466                 valid = 0;
 467         }
 468
 469         if (aura_dict_size(d) > 16) {
 470                 inform(a->c, _("You cannot have more than 16 subpartitions "
 471                     "on a single primary partition.  Remove some "
 472                     "and try again."));
 473                 valid = 0;
 474         }
 475
 476         aura_dict_free(d);
 477
 478         return(valid);
 479 }
 480
 481 static void
 482 save_subpartition_selections(struct dfui_response *r, struct i_fn_args *a)
 483 {
 484         struct dfui_dataset *ds;
 485         char tmpfsbacked;
 486         const char *mountpoint, *capstring;
 487         long capacity;
 488         long bsize, fsize;
 489         int softupdates;
 490         int valid = 1;
 491
 492         subpartitions_free(storage_get_selected_slice(a->s));
 493
 494         for (ds = dfui_response_dataset_get_first(r); valid && ds != NULL;
 495             ds = dfui_dataset_get_next(ds)) {
 496                 mountpoint = dfui_dataset_get_value(ds, "mountpoint");
 497                 capstring = dfui_dataset_get_value(ds, "capacity");
 498
 499                 if (expert) {
 500                         softupdates =
 501                             (strcmp(dfui_dataset_get_value(ds, "softupdates"), "Y") == 0);
 502                         fsize = atol(dfui_dataset_get_value(ds, "fsize"));
 503                         bsize = atol(dfui_dataset_get_value(ds, "bsize"));
 504                         tmpfsbacked = (strcmp(dfui_dataset_get_value(ds, "tmpfsbacked"), "Y") == 0);
 505                 } else {
 506                         softupdates = (strcmp(mountpoint, "/") == 0 ? 0 : 1);
 507                         tmpfsbacked = 0;
 508                         fsize = -1;
 509                         bsize = -1;
 510                 }
 511
 512                 if (string_to_capacity(capstring, &capacity)) {
 513                         subpartition_new_ufs(storage_get_selected_slice(a->s),
 514                             mountpoint, capacity,
 515                             strcasecmp(dfui_dataset_get_value(ds, "encrypted"), "Y") == 0,
 516                             softupdates, fsize, bsize, tmpfsbacked);
 517                 }
 518         }
 519 }
 520
 521 static void
 522 populate_create_subpartitions_form(struct dfui_form *f, struct i_fn_args *a)
 523 {
 524         struct subpartition *sp;
 525         struct dfui_dataset *ds;
 526         char temp[32];
 527         int mtpt;
 528         long capacity;
 529
 530         if (slice_subpartition_first(storage_get_selected_slice(a->s)) != NULL) {
 531                 /*
 532                  * The user has already given us their subpartition
 533                  * preferences, so use them here.
 534                  */
 535                 for (sp = slice_subpartition_first(storage_get_selected_slice(a->s));
 536                      sp != NULL; sp = subpartition_next(sp)) {
 537                         ds = dfui_dataset_new();
 538                         dfui_dataset_celldata_add(ds, "mountpoint",
 539                             subpartition_get_mountpoint(sp));
 540                         dfui_dataset_celldata_add(ds, "capacity",
 541                             capacity_to_string(subpartition_get_capacity(sp)));
 542                         dfui_dataset_celldata_add(ds, "encrypted",
 543                             subpartition_is_encrypted(sp) ? "Y" : "N");
 544                         if (expert) {
 545                                 dfui_dataset_celldata_add(ds, "softupdates",
 546                                     subpartition_is_softupdated(sp) ? "Y" : "N");
 547                                 dfui_dataset_celldata_add(ds, "tmpfsbacked",
 548                                     subpartition_is_tmpfsbacked(sp) ? "Y" : "N");
 549                                 snprintf(temp, 32, "%ld", subpartition_get_fsize(sp));
 550                                 dfui_dataset_celldata_add(ds, "fsize",
 551                                     temp);
 552                                 snprintf(temp, 32, "%ld", subpartition_get_bsize(sp));
 553                                 dfui_dataset_celldata_add(ds, "bsize",
 554                                     temp);
 555                         }
 556                         dfui_form_dataset_add(f, ds);
 557                 }
 558         } else {
 559                 /*
 560                  * Otherwise, populate the form with datasets representing
 561                  * reasonably-calculated defaults.  The defaults are chosen
 562                  * based on the slice's total capacity and the machine's
 563                  * total physical memory (for swap.)
 564                  */
 565                 for (mtpt = 0; def_mountpt[mtpt] != NULL; mtpt++) {
 566                         capacity = default_capacity(a->s, mtpt);
 567                         ds = dfui_dataset_new();
 568                         dfui_dataset_celldata_add(ds, "mountpoint",
 569                             def_mountpt[mtpt]);
 570                         dfui_dataset_celldata_add(ds, "capacity",
 571                             capacity_to_string(capacity));
 572                         dfui_dataset_celldata_add(ds, "encrypted", "N");
 573                         if (expert) {
 574                                 dfui_dataset_celldata_add(ds, "softupdates",
 575                                     strcmp(def_mountpt[mtpt], "/") != 0 ? "Y" : "N");
 576                                 dfui_dataset_celldata_add(ds, "tmpfsbacked",
 577                                     "N");
 578                                 dfui_dataset_celldata_add(ds, "fsize",
 579                                     capacity < 1024 ? "1024" : "2048");
 580                                 dfui_dataset_celldata_add(ds, "bsize",
 581                                     capacity < 1024 ? "8192" : "16384");
 582                         }
 583                         dfui_form_dataset_add(f, ds);
 584                 }
 585         }
 586 }
 587
 588 static int
 589 warn_subpartition_selections(struct i_fn_args *a)
 590 {
 591         int valid = 0;
 592         struct aura_buffer *omit, *consequences;
 593
 594         omit = aura_buffer_new(2048);
 595         consequences = aura_buffer_new(2048);
 596
 597         valid = check_capacity(a);
 598         if (subpartition_find(storage_get_selected_slice(a->s), "/var") == NULL) {
 599                 aura_buffer_cat(omit, "/var ");
 600                 aura_buffer_cat(consequences, _("/var will be a plain dir in /\n"));
 601         }
 602         if (subpartition_find(storage_get_selected_slice(a->s), "/usr") == NULL) {
 603                 aura_buffer_cat(omit, "/usr ");
 604                 aura_buffer_cat(consequences, _("/usr will be a plain dir in /\n"));
 605         }
 606         if (subpartition_find(storage_get_selected_slice(a->s), "/tmp") == NULL) {
 607                 aura_buffer_cat(omit, "/tmp ");
 608                 aura_buffer_cat(consequences, _("/tmp will be symlinked to /var/tmp\n"));
 609         }
 610         if (subpartition_find(storage_get_selected_slice(a->s), "/home") == NULL) {
 611                 aura_buffer_cat(omit, "/home ");
 612                 aura_buffer_cat(consequences, _("/home will be symlinked to /usr/home\n"));
 613         }
 614
 615         if (valid && aura_buffer_len(omit) > 0) {
 616                 switch (dfui_be_present_dialog(a->c, _("Really omit?"),
 617                     _("Omit Subpartition(s)|Return to Create Subpartitions"),
 618                     _("You have elected to not have the following "
 619                     "subpartition(s):\n\n%s\n\n"
 620                     "The ramifications of these subpartition(s) being "
 621                     "missing will be:\n\n%s\n"
 622                     "Is this really what you want to do?"),
 623                     aura_buffer_buf(omit), aura_buffer_buf(consequences))) {
 624                 case 1:
 625                         valid = 1;
 626                         break;
 627                 case 2:
 628                         valid = 0;
 629                         break;
 630                 default:
 631                         abort_backend();
 632                 }
 633         }
 634
 635         aura_buffer_free(omit);
 636         aura_buffer_free(consequences);
 637
 638         return(!valid);
 639 }
 640
 641 static int
 642 warn_encrypted_root(struct i_fn_args *a)
 643 {
 644         int valid = 1;
 645         struct subpartition *sp;
 646
 647         sp = subpartition_find(storage_get_selected_slice(a->s), "/");
 648         if (sp == NULL)
 649                 return(!valid);
 650
 651         if (subpartition_is_encrypted(sp)) {
 652                 switch (dfui_be_present_dialog(a->c, _("root cannot be encrypted"),
 653                     _("Leave root unencrypted|Return to Create Subpartitions"),
 654                     _("You have selected encryption for the root partition which "
 655                     "is not supported."))) {
 656                 case 1:
 657                         subpartition_clr_encrypted(sp);
 658                         valid = 1;
 659                         break;
 660                 case 2:
 661                         valid = 0;
 662                         break;
 663                 default:
 664                         abort_backend();
 665                 }
 666         }
 667
 668         return(!valid);
 669 }
 670
 671 static struct dfui_form *
 672 make_create_subpartitions_form(struct i_fn_args *a)
 673 {
 674         struct dfui_field *fi;
 675         struct dfui_form *f;
 676         char msg_buf[1][1024];
 677
 678         snprintf(msg_buf[0], sizeof(msg_buf[0]),
 679             _("Subpartitions further divide a primary partition for "
 680             "use with %s.  Some reasons you may want "
 681             "a set of subpartitions are:\n\n"
 682             "- you want to restrict how much data can be written "
 683             "to certain parts of the primary partition, to quell "
 684             "denial-of-service attacks; and\n"
 685             "- you want to speed up access to data on the disk."
 686             ""), OPERATING_SYSTEM_NAME);
 687
 688         f = dfui_form_create(
 689             "create_subpartitions",
 690             _("Create Subpartitions"),
 691             _("Set up the subpartitions (also known as just `partitions' "
 692             "in BSD tradition) you want to have on this primary "
 693             "partition.\n\n"
 694             "For Capacity, use 'M' to indicate megabytes, 'G' to "
 695             "indicate gigabytes, or a single '*' to indicate "
 696             "'use the remaining space on the primary partition'."),
 697
 698             msg_buf[0],
 699
 700             "p", "special", "dfinstaller_create_subpartitions",
 701             "p", "minimum_width","64",
 702
 703             "f", "mountpoint", _("Mountpoint"), "", "",
 704             "f", "capacity", _("Capacity"), "", "",
 705
 706             "f", "encrypted", _("Encrypted"), "", "",
 707             "p", "control", "checkbox",
 708
 709             "a", "ok", _("Accept and Create"), "", "",
 710             "a", "cancel",
 711             (disk_get_formatted(storage_get_selected_disk(a->s)) ?
 712             _("Return to Select Disk") :
 713             _("Return to Select Primary Partition")), "", "",
 714             "p", "accelerator", "ESC",
 715
 716             NULL
 717         );
 718
 719         dfui_form_set_multiple(f, 1);
 720         dfui_form_set_extensible(f, 1);
 721
 722         if (expert) {
 723                 fi = dfui_form_field_add(f, "softupdates",
 724                     dfui_info_new(_("Softupdates"), "", ""));
 725                 dfui_field_property_set(fi, "control", "checkbox");
 726
 727                 fi = dfui_form_field_add(f, "tmpfsbacked",
 728                     dfui_info_new(_("TMPFS"), "", ""));
 729                 dfui_field_property_set(fi, "control", "checkbox");
 730
 731                 fi = dfui_form_field_add(f, "fsize",
 732                     dfui_info_new(_("Frag Sz"), "", ""));
 733
 734                 fi = dfui_form_field_add(f, "bsize",
 735                     dfui_info_new(_("Block Sz"), "", ""));
 736
 737                 dfui_form_action_add(f, "switch",
 738                     dfui_info_new(_("Switch to Normal Mode"), "", ""));
 739         } else {
 740                 dfui_form_action_add(f, "switch",
 741                     dfui_info_new(_("Switch to Expert Mode"), "", ""));
 742         }
 743
 744         return(f);
 745 }
 746
 747 /*
 748  * Returns:
 749  *      -1 = the form should be redisplayed
 750  *       0 = failure, function is over
 751  *       1 = success, function is over
 752  */
 753 static int
 754 show_create_subpartitions_form(struct dfui_form *f, struct i_fn_args *a)
 755 {
 756         struct dfui_dataset *ds;
 757         struct dfui_response *r;
 758
 759         for (;;) {
 760                 if (dfui_form_dataset_get_first(f) == NULL)
 761                         populate_create_subpartitions_form(f, a);
 762
 763                 if (!dfui_be_present(a->c, f, &r))
 764                         abort_backend();
 765
 766                 if (strcmp(dfui_response_get_action_id(r), "cancel") == 0) {
 767                         dfui_response_free(r);
 768                         return(0);
 769                 } else if (strcmp(dfui_response_get_action_id(r), "switch") == 0) {
 770                         if (check_subpartition_selections(r, a)) {
 771                                 save_subpartition_selections(r, a);
 772                                 expert = expert ? 0 : 1;
 773                                 dfui_response_free(r);
 774                                 return(-1);
 775                         }
 776                 } else {
 777                         if (check_subpartition_selections(r, a)) {
 778                                 save_subpartition_selections(r, a);
 779                                 if (!warn_subpartition_selections(a) &&
 780                                     !warn_encrypted_root(a)) {
 781                                         if (!create_subpartitions(a)) {
 782                                                 inform(a->c, _("The subpartitions you chose were "
 783                                                         "not correctly created, and the "
 784                                                         "primary partition may "
 785                                                         "now be in an inconsistent state. "
 786                                                         "We recommend re-formatting it "
 787                                                         "before proceeding."));
 788                                                 dfui_response_free(r);
 789                                                 return(0);
 790                                         } else {
 791                                                 dfui_response_free(r);
 792                                                 return(1);
 793                                         }
 794                                 }
 795                         }
 796                 }
 797
 798                 dfui_form_datasets_free(f);
 799                 /* dfui_form_datasets_add_from_response(f, r); */
 800                 for (ds = dfui_response_dataset_get_first(r); ds != NULL;
 801                     ds = dfui_dataset_get_next(ds)) {
 802                         dfui_form_dataset_add(f, dfui_dataset_dup(ds));
 803                 }
 804         }
 805 }
 806
 807 void
 808 fn_create_subpartitions_ufs(struct i_fn_args *a)
 809 {
 810         struct dfui_form *f;
 811         int done = 0;
 812
 813         a->result = 0;
 814         while (!done) {
 815                 f = make_create_subpartitions_form(a);
 816                 switch (show_create_subpartitions_form(f, a)) {
 817                 case -1:
 818                         done = 0;
 819                         break;
 820                 case 0:
 821                         done = 1;
 822                         a->result = 0;
 823                         break;
 824                 case 1:
 825                         done = 1;
 826                         a->result = 1;
 827                         break;
 828                 }
 829                 dfui_form_free(f);
 830         }
 831 }