contrib/bsdinstaller-1.1.6/src/backend/installer/fn_subpart.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 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[7]  = {"/", "swap", "/var", "/tmp", "/usr", "/home", NULL};
  80 static long def_capacity[7]        = {128,    128,    128,    128,    256,      -1,    0};
  81
  82 static int expert = 0;
  83
  84 /*
  85  * Given a set of subpartitions-to-be in the selected slice,
  86  * create them.
  87  */
  88 static int
  89 create_subpartitions(struct i_fn_args *a)
  90 {
  91         struct subpartition *sp;
  92         struct commands *cmds;
  93         int result = 0;
  94         int copied_original = 0;
  95         int num_partitions;
  96
  97         cmds = commands_new();
  98         if (!is_file("%sinstall.disklabel.%s",
  99             a->tmp,
 100             slice_get_device_name(storage_get_selected_slice(a->s)))) {
 101                 /*
 102                  * Get a copy of the 'virgin' disklabel.
 103                  * XXX It might make more sense for this to
 104                  * happen right after format_slice() instead.
 105                  */
 106                 command_add(cmds, "%s%s -r %s >%sinstall.disklabel.%s",
 107                     a->os_root, cmd_name(a, "DISKLABEL"),
 108                     slice_get_device_name(storage_get_selected_slice(a->s)),
 109                     a->tmp,
 110                     slice_get_device_name(storage_get_selected_slice(a->s)));
 111         }
 112
 113         /*
 114          * Weave together a new disklabel out the of the 'virgin'
 115          * disklabel, and the user's subpartition choices.
 116          */
 117
 118         /*
 119          * Take everything from the 'virgin' disklabel up until the
 120          * '16 partitions' line.
 121          */
 122         num_partitions = 16;
 123         command_add(cmds, "%s%s '$2==\"partitions:\" || cut { cut = 1 } !cut { print $0 }' <%sinstall.disklabel.%s >%sinstall.disklabel",
 124             a->os_root, cmd_name(a, "AWK"),
 125             a->tmp,
 126             slice_get_device_name(storage_get_selected_slice(a->s)),
 127             a->tmp);
 128
 129         /*
 130          * 16 partitions:
 131          * #          size     offset    fstype
 132          *   c:   16383969          0    unused #    7999.985MB
 133          */
 134
 135         command_add(cmds, "%s%s '%d partitions:' >>%sinstall.disklabel",
 136             a->os_root, cmd_name(a, "ECHO"), num_partitions ,a->tmp);
 137         command_add(cmds, "%s%s '%s' >>%sinstall.disklabel",
 138             a->os_root, cmd_name(a, "ECHO"),
 139             "#          size     offset    fstype",
 140             a->tmp);
 141
 142 #ifdef DEBUG
 143         for (sp = slice_subpartition_first(storage_get_selected_slice(a->s));
 144              sp != NULL; sp = subpartition_next(sp)) {
 145                 command_add(cmds, "%s%s 'mountpoint: %s device: %s'",
 146                      a->os_root, cmd_name(a, "ECHO"),
 147                      subpartition_get_mountpoint(sp),
 148                      subpartition_get_device_name(sp));
 149         }
 150 #endif
 151
 152         /*
 153          * Write a line for each subpartition the user wants.
 154          */
 155         for (sp = slice_subpartition_first(storage_get_selected_slice(a->s));
 156              sp != NULL; sp = subpartition_next(sp)) {
 157                 if (subpartition_is_mfsbacked(sp)) {
 158                         continue;
 159                 }
 160                 if (subpartition_get_letter(sp) > 'c' && !copied_original) {
 161                         /*
 162                          * Copy the 'c' line from the 'virgin' disklabel.
 163                          */
 164                         command_add(cmds, "%s%s '^  c:' %sinstall.disklabel.%s >>%sinstall.disklabel",
 165                             a->os_root, cmd_name(a, "GREP"),
 166                             a->tmp,
 167                             slice_get_device_name(storage_get_selected_slice(a->s)),
 168                             a->tmp);
 169                         copied_original = 1;
 170                 }
 171                 if (subpartition_is_swap(sp)) {
 172                         command_add(cmds, "%s%s '  %c:\t%s\t*\tswap' >>%sinstall.disklabel",
 173                             a->os_root, cmd_name(a, "ECHO"),
 174                             subpartition_get_letter(sp),
 175                             capacity_to_string(subpartition_get_capacity(sp)),
 176                             a->tmp);
 177                 } else {
 178                         command_add(cmds, "%s%s '  %c:\t%s\t%s\t4.2BSD' >>%sinstall.disklabel",
 179                             a->os_root, cmd_name(a, "ECHO"),
 180                             subpartition_get_letter(sp),
 181                             capacity_to_string(subpartition_get_capacity(sp)),
 182                             subpartition_get_letter(sp) == 'a' ? "0" : "*",
 183                             a->tmp);
 184                 }
 185         }
 186         if (!copied_original) {
 187                 /*
 188                  * Copy the 'c' line from the 'virgin' disklabel,
 189                  * if we haven't yet (less than 2 subpartitions.)
 190                  */
 191                 command_add(cmds, "%s%s '^  c:' %sinstall.disklabel.%s >>%sinstall.disklabel",
 192                     a->os_root, cmd_name(a, "GREP"),
 193                     a->tmp,
 194                     slice_get_device_name(storage_get_selected_slice(a->s)),
 195                     a->tmp);
 196         }
 197         temp_file_add(a, "install.disklabel");
 198
 199         /*
 200          * Label the slice from the disklabel we just wove together.
 201          */
 202         command_add(cmds, "%s%s -R -B -r %s %sinstall.disklabel",
 203             a->os_root, cmd_name(a, "DISKLABEL"),
 204             slice_get_device_name(storage_get_selected_slice(a->s)),
 205             a->tmp);
 206
 207         /*
 208          * Create a snapshot of the disklabel we just created
 209          * for debugging inspection in the log.
 210          */
 211         command_add(cmds, "%s%s %s",
 212             a->os_root, cmd_name(a, "DISKLABEL"),
 213             slice_get_device_name(storage_get_selected_slice(a->s)));
 214
 215         /*
 216          * Create filesystems on the newly-created subpartitions.
 217          */
 218         for (sp = slice_subpartition_first(storage_get_selected_slice(a->s));
 219              sp != NULL; sp = subpartition_next(sp)) {
 220                 if (subpartition_is_swap(sp) || subpartition_is_mfsbacked(sp))
 221                         continue;
 222
 223                 /*
 224                  * Ensure that all the needed device nodes exist.
 225                  */
 226                 command_add_ensure_dev(a, cmds,
 227                     disk_get_device_name(storage_get_selected_disk(a->s)));
 228                 command_add_ensure_dev(a, cmds,
 229                     slice_get_device_name(storage_get_selected_slice(a->s)));
 230                 command_add_ensure_dev(a, cmds,
 231                     subpartition_get_device_name(sp));
 232
 233                 command_add(cmds, "%s%s%s -b %ld -f %ld %sdev/%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                     a->os_root,
 239                     subpartition_get_device_name(sp));
 240         }
 241
 242         result = commands_execute(a, cmds);
 243         commands_free(cmds);
 244         return(result);
 245 }
 246
 247 /*
 248  * +-------+------------+--------------+-----------------+-----------------+
 249  * | Mtpt  | Matt says  | FreeBSD says | I got away with | A tiny system   |
 250  * +-------+------------+--------------+-----------------+-----------------+
 251  * | /     |       256M |         100M |            256M |             64M |
 252  * | swap  |         1G | 2 or 3 * mem |  (4 * mem) 256M |   (1 * mem) 64M |
 253  * | /var  |       256M |          50M |            256M |             12M |
 254  * | /tmp  |       256M |          --- |            256M |             --- |
 255  * | /usr  | [4G to] 8G | (>160M) rest |              5G |            160M |
 256  * | /home |       rest |          --- |            3.5G |             --- |
 257  * +-------+------------+--------------+-----------------+-----------------+
 258  * | total |       10G+ |       ~430M+ |            9.5G |            300M |
 259  * +-------+------------+--------------+-----------------+-----------------+
 260  */
 261
 262 static long
 263 default_capacity(struct storage *s, int mtpt)
 264 {
 265         unsigned long swap;
 266         unsigned long capacity;
 267
 268         if (mtpt == MTPT_HOME)
 269                 return(-1);
 270
 271         capacity = slice_get_capacity(storage_get_selected_slice(s));
 272         swap = 2 * storage_get_memsize(s);
 273         if (storage_get_memsize(s) > (capacity / 2) || capacity < 4096)
 274                 swap = storage_get_memsize(s);
 275         if (storage_get_memsize(s) > capacity)
 276                 swap = capacity / 2;
 277         if (swap > 8192)
 278                 swap = 8192;
 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 < 523) {
 287                 switch (mtpt) {
 288                 case MTPT_ROOT: return(70);
 289                 case MTPT_SWAP: return(swap);
 290                 case MTPT_VAR:  return(32);
 291                 case MTPT_TMP:  return(32);
 292                 case MTPT_USR:  return(174);
 293                 }
 294         } else if (capacity < 1024) {
 295                 switch (mtpt) {
 296                 case MTPT_ROOT: return(96);
 297                 case MTPT_SWAP: return(swap);
 298                 case MTPT_VAR:  return(64);
 299                 case MTPT_TMP:  return(64);
 300                 case MTPT_USR:  return(256);
 301                 }
 302         } else if (capacity < 4096) {
 303                 switch (mtpt) {
 304                 case MTPT_ROOT: return(128);
 305                 case MTPT_SWAP: return(swap);
 306                 case MTPT_VAR:  return(128);
 307                 case MTPT_TMP:  return(128);
 308                 case MTPT_USR:  return(512);
 309                 }
 310         } else if (capacity < 10240) {
 311                 switch (mtpt) {
 312                 case MTPT_ROOT: return(256);
 313                 case MTPT_SWAP: return(swap);
 314                 case MTPT_VAR:  return(256);
 315                 case MTPT_TMP:  return(256);
 316                 case MTPT_USR:  return(3072);
 317                 }
 318         } else {
 319                 switch (mtpt) {
 320                 case MTPT_ROOT: return(256);
 321                 case MTPT_SWAP: return(swap);
 322                 case MTPT_VAR:  return(256);
 323                 case MTPT_TMP:  return(256);
 324                 case MTPT_USR:  return(8192);
 325                 }
 326         }
 327         /* shouldn't ever happen */
 328         return(-1);
 329 }
 330
 331 static int
 332 check_capacity(struct i_fn_args *a)
 333 {
 334         struct subpartition *sp;
 335         unsigned long min_capacity[7] = {70, 0, 8, 0, 174, 0, 0};
 336         unsigned long total_capacity = 0;
 337         int mtpt;
 338
 339         if (subpartition_find(storage_get_selected_slice(a->s), "/usr") == NULL)
 340                 min_capacity[MTPT_ROOT] += min_capacity[MTPT_USR];
 341
 342         for (sp = slice_subpartition_first(storage_get_selected_slice(a->s));
 343              sp != NULL; sp = subpartition_next(sp)) {
 344                 if (subpartition_get_capacity(sp) == -1)
 345                         total_capacity++;
 346                 else
 347                         total_capacity += subpartition_get_capacity(sp);
 348                 for (mtpt = 0; def_mountpt[mtpt] != NULL; mtpt++) {
 349                         if (strcmp(subpartition_get_mountpoint(sp), def_mountpt[mtpt]) == 0 &&
 350                             min_capacity[mtpt] > 0 &&
 351                             subpartition_get_capacity(sp) < min_capacity[mtpt]) {
 352                                 inform(a->c, _("WARNING: the %s subpartition should "
 353                                     "be at least %dM in size or you will "
 354                                     "risk running out of space during "
 355                                     "the installation."),
 356                                     subpartition_get_mountpoint(sp), min_capacity[mtpt]);
 357                         }
 358                 }
 359         }
 360
 361         if (total_capacity > slice_get_capacity(storage_get_selected_slice(a->s))) {
 362                 inform(a->c, _("The space allocated to all of your selected "
 363                     "subpartitions (%dM) exceeds the total "
 364                     "capacity of the selected primary partition "
 365                     "(%dM). Remove some subpartitions or choose "
 366                     "a smaller size for them and try again."),
 367                     total_capacity, slice_get_capacity(storage_get_selected_slice(a->s)));
 368                 return(0);
 369         }
 370
 371         return(1);
 372 }
 373
 374 static int
 375 check_subpartition_selections(struct dfui_response *r, struct i_fn_args *a)
 376 {
 377         struct dfui_dataset *ds;
 378         struct dfui_dataset *star_ds = NULL;
 379         struct aura_dict *d;
 380         const char *mountpoint, *capstring;
 381         long capacity = 0;
 382         long bsize, fsize;
 383         int found_root = 0;
 384         int softupdates, mfsbacked;
 385         int valid = 1;
 386
 387         d = aura_dict_new(1, AURA_DICT_LIST);
 388
 389         if ((ds = dfui_response_dataset_get_first(r)) == NULL) {
 390                 inform(a->c, _("Please set up at least one subpartition."));
 391                 valid = 0;
 392         }
 393
 394         for (ds = dfui_response_dataset_get_first(r); valid && ds != NULL;
 395             ds = dfui_dataset_get_next(ds)) {
 396 #ifdef DEBUG
 397                 dfui_dataset_dump(ds);
 398 #endif
 399                 mountpoint = dfui_dataset_get_value(ds, "mountpoint");
 400                 capstring = dfui_dataset_get_value(ds, "capacity");
 401
 402                 if (expert) {
 403                         softupdates =
 404                             (strcmp(dfui_dataset_get_value(ds, "softupdates"), "Y") == 0);
 405                         fsize = atol(dfui_dataset_get_value(ds, "fsize"));
 406                         bsize = atol(dfui_dataset_get_value(ds, "bsize"));
 407                         mfsbacked = (strcmp(dfui_dataset_get_value(ds, "mfsbacked"), "Y") == 0);
 408                 } else {
 409                         softupdates = (strcmp(mountpoint, "/") == 0 ? 0 : 1);
 410                         mfsbacked = (strcmp(mountpoint, "/tmp") == 0 ? 0 : 1);
 411                         fsize = -1;
 412                         bsize = -1;
 413                 }
 414
 415                 if (aura_dict_exists(d, mountpoint, strlen(mountpoint) + 1)) {
 416                         inform(a->c, _("The same mount point cannot be specified "
 417                             "for two different subpartitions."));
 418                         valid = 0;
 419                 }
 420
 421                 if (strcmp(mountpoint, "/") == 0)
 422                         found_root = 1;
 423
 424                 if (strcmp(capstring, "*") == 0) {
 425                         if (star_ds != NULL) {
 426                                 inform(a->c, _("You cannot have more than one subpartition "
 427                                     "with a '*' capacity (meaning 'use the remainder "
 428                                     "of the primary partition'.)"));
 429                                 valid = 0;
 430                         } else {
 431                                 star_ds = ds;
 432                         }
 433                 }
 434
 435                 if (!(!strcasecmp(mountpoint, "swap") || mountpoint[0] == '/')) {
 436                         inform(a->c, _("Mount point must be either 'swap', or it must "
 437                             "start with a '/'."));
 438                         valid = 0;
 439                 }
 440
 441                 if (strpbrk(mountpoint, " \\\"'`") != NULL) {
 442                         inform(a->c, _("Mount point may not contain the following "
 443                             "characters: blank space, backslash, or "
 444                             "single, double, or back quotes."));
 445                         valid = 0;
 446                 }
 447
 448                 if (strlen(capstring) == 0) {
 449                         inform(a->c, _("A capacity must be specified."));
 450                         valid = 0;
 451                 }
 452
 453                 if (!string_to_capacity(capstring, &capacity)) {
 454                         inform(a->c, _("Capacity must be either a '*' symbol to indicate "
 455                             "'use the rest of the primary partition', or it "
 456                             "must be a series of decimal digits ending with a "
 457                             "'M' (indicating megabytes) or a 'G' (indicating "
 458                             "gigabytes.)"));
 459                         valid = 0;
 460                 }
 461
 462                 if ((strcasecmp(mountpoint, "swap") == 0) && (capacity > 8192)) {
 463                         inform(a->c, _("Swap capacity is limited to 8G."));
 464                         valid = 0;
 465                 }
 466
 467                 /*
 468                  * If we made it through that obstacle course, all is well.
 469                  */
 470
 471                 if (valid)
 472                         aura_dict_store(d, mountpoint, strlen(mountpoint) + 1, "", 1);
 473         }
 474
 475         if (!found_root) {
 476                 inform(a->c, _("You must include a / (root) subpartition."));
 477                 valid = 0;
 478         }
 479
 480         if (aura_dict_size(d) > 16) {
 481                 inform(a->c, _("You cannot have more than 16 subpartitions "
 482                     "on a single primary partition.  Remove some "
 483                     "and try again."));
 484                 valid = 0;
 485         }
 486
 487         aura_dict_free(d);
 488
 489         return(valid);
 490 }
 491
 492 static void
 493 save_subpartition_selections(struct dfui_response *r, struct i_fn_args *a)
 494 {
 495         struct dfui_dataset *ds;
 496         char mfsbacked;
 497         const char *mountpoint, *capstring;
 498         long capacity;
 499         long bsize, fsize;
 500         int softupdates;
 501         int valid = 1;
 502
 503         subpartitions_free(storage_get_selected_slice(a->s));
 504
 505         for (ds = dfui_response_dataset_get_first(r); valid && ds != NULL;
 506             ds = dfui_dataset_get_next(ds)) {
 507                 mountpoint = dfui_dataset_get_value(ds, "mountpoint");
 508                 capstring = dfui_dataset_get_value(ds, "capacity");
 509
 510                 if (expert) {
 511                         softupdates =
 512                             (strcmp(dfui_dataset_get_value(ds, "softupdates"), "Y") == 0);
 513                         fsize = atol(dfui_dataset_get_value(ds, "fsize"));
 514                         bsize = atol(dfui_dataset_get_value(ds, "bsize"));
 515                         mfsbacked = (strcmp(dfui_dataset_get_value(ds, "mfsbacked"), "Y") == 0);
 516                 } else {
 517                         softupdates = (strcmp(mountpoint, "/") == 0 ? 0 : 1);
 518                         mfsbacked = 0;
 519                         fsize = -1;
 520                         bsize = -1;
 521                 }
 522
 523                 if (string_to_capacity(capstring, &capacity)) {
 524                         subpartition_new(storage_get_selected_slice(a->s), mountpoint, capacity,
 525                             softupdates, fsize, bsize, mfsbacked);
 526                 }
 527         }
 528 }
 529
 530 static void
 531 populate_create_subpartitions_form(struct dfui_form *f, struct i_fn_args *a)
 532 {
 533         struct subpartition *sp;
 534         struct dfui_dataset *ds;
 535         char temp[32];
 536         int mtpt;
 537         long capacity;
 538
 539         if (slice_subpartition_first(storage_get_selected_slice(a->s)) != NULL) {
 540                 /*
 541                  * The user has already given us their subpartition
 542                  * preferences, so use them here.
 543                  */
 544                 for (sp = slice_subpartition_first(storage_get_selected_slice(a->s));
 545                      sp != NULL; sp = subpartition_next(sp)) {
 546                         ds = dfui_dataset_new();
 547                         dfui_dataset_celldata_add(ds, "mountpoint",
 548                             subpartition_get_mountpoint(sp));
 549                         dfui_dataset_celldata_add(ds, "capacity",
 550                             capacity_to_string(subpartition_get_capacity(sp)));
 551                         if (expert) {
 552                                 dfui_dataset_celldata_add(ds, "softupdates",
 553                                     subpartition_is_softupdated(sp) ? "Y" : "N");
 554                                 dfui_dataset_celldata_add(ds, "mfsbacked",
 555                                     subpartition_is_mfsbacked(sp) ? "Y" : "N");
 556                                 snprintf(temp, 32, "%ld", subpartition_get_fsize(sp));
 557                                 dfui_dataset_celldata_add(ds, "fsize",
 558                                     temp);
 559                                 snprintf(temp, 32, "%ld", subpartition_get_bsize(sp));
 560                                 dfui_dataset_celldata_add(ds, "bsize",
 561                                     temp);
 562                         }
 563                         dfui_form_dataset_add(f, ds);
 564                 }
 565         } else {
 566                 /*
 567                  * Otherwise, populate the form with datasets representing
 568                  * reasonably-calculated defaults.  The defaults are chosen
 569                  * based on the slice's total capacity and the machine's
 570                  * total physical memory (for swap.)
 571                  */
 572                 for (mtpt = 0; def_mountpt[mtpt] != NULL; mtpt++) {
 573                         capacity = default_capacity(a->s, mtpt);
 574                         ds = dfui_dataset_new();
 575                         dfui_dataset_celldata_add(ds, "mountpoint",
 576                             def_mountpt[mtpt]);
 577                         dfui_dataset_celldata_add(ds, "capacity",
 578                             capacity_to_string(capacity));
 579                         if (expert) {
 580                                 dfui_dataset_celldata_add(ds, "softupdates",
 581                                     strcmp(def_mountpt[mtpt], "/") != 0 ? "Y" : "N");
 582                                 dfui_dataset_celldata_add(ds, "mfsbacked",
 583                                     "N");
 584                                 dfui_dataset_celldata_add(ds, "fsize",
 585                                     capacity < 1024 ? "1024" : "2048");
 586                                 dfui_dataset_celldata_add(ds, "bsize",
 587                                     capacity < 1024 ? "8192" : "16384");
 588                         }
 589                         dfui_form_dataset_add(f, ds);
 590                 }
 591         }
 592 }
 593
 594 static int
 595 warn_subpartition_selections(struct i_fn_args *a)
 596 {
 597         int valid = 0;
 598         struct aura_buffer *omit, *consequences;
 599
 600         omit = aura_buffer_new(2048);
 601         consequences = aura_buffer_new(2048);
 602
 603         valid = check_capacity(a);
 604         if (subpartition_find(storage_get_selected_slice(a->s), "/var") == NULL) {
 605                 aura_buffer_cat(omit, "/var ");
 606                 aura_buffer_cat(consequences, _("/var will be a plain dir in /\n"));
 607         }
 608         if (subpartition_find(storage_get_selected_slice(a->s), "/usr") == NULL) {
 609                 aura_buffer_cat(omit, "/usr ");
 610                 aura_buffer_cat(consequences, _("/usr will be a plain dir in /\n"));
 611         }
 612         if (subpartition_find(storage_get_selected_slice(a->s), "/tmp") == NULL) {
 613                 aura_buffer_cat(omit, "/tmp ");
 614                 aura_buffer_cat(consequences, _("/tmp will be symlinked to /var/tmp\n"));
 615         }
 616         if (subpartition_find(storage_get_selected_slice(a->s), "/home") == NULL) {
 617                 aura_buffer_cat(omit, "/home ");
 618                 aura_buffer_cat(consequences, _("/home will be symlinked to /usr/home\n"));
 619         }
 620
 621         if (valid && aura_buffer_len(omit) > 0) {
 622                 switch (dfui_be_present_dialog(a->c, _("Really omit?"),
 623                     _("Omit Subpartition(s)|Return to Create Subpartitions"),
 624                     _("You have elected to not have the following "
 625                     "subpartition(s):\n\n%s\n\n"
 626                     "The ramifications of these subpartition(s) being "
 627                     "missing will be:\n\n%s\n"
 628                     "Is this really what you want to do?"),
 629                     aura_buffer_buf(omit), aura_buffer_buf(consequences))) {
 630                 case 1:
 631                         valid = 1;
 632                         break;
 633                 case 2:
 634                         valid = 0;
 635                         break;
 636                 default:
 637                         abort_backend();
 638                 }
 639         }
 640
 641         aura_buffer_free(omit);
 642         aura_buffer_free(consequences);
 643
 644         return(!valid);
 645 }
 646
 647 static struct dfui_form *
 648 make_create_subpartitions_form(struct i_fn_args *a)
 649 {
 650         struct dfui_field *fi;
 651         struct dfui_form *f;
 652         char msg_buf[1][1024];
 653
 654         snprintf(msg_buf[0], sizeof(msg_buf[0]),
 655             _("Subpartitions further divide a primary partition for "
 656             "use with %s.  Some reasons you may want "
 657             "a set of subpartitions are:\n\n"
 658             "- you want to restrict how much data can be written "
 659             "to certain parts of the primary partition, to quell "
 660             "denial-of-service attacks; and\n"
 661             "- you want to speed up access to data on the disk."
 662             ""), OPERATING_SYSTEM_NAME);
 663
 664         f = dfui_form_create(
 665             "create_subpartitions",
 666             _("Create Subpartitions"),
 667             _("Set up the subpartitions (also known as just `partitions' "
 668             "in BSD tradition) you want to have on this primary "
 669             "partition.\n\n"
 670             "For Capacity, use 'M' to indicate megabytes, 'G' to "
 671             "indicate gigabytes, or a single '*' to indicate "
 672             "'use the remaining space on the primary partition'."),
 673
 674             msg_buf[0],
 675
 676             "p", "special", "dfinstaller_create_subpartitions",
 677             "p", "minimum_width","64",
 678
 679             "f", "mountpoint", _("Mountpoint"), "", "",
 680             "f", "capacity", _("Capacity"), "", "",
 681
 682             "a", "ok", _("Accept and Create"), "", "",
 683             "a", "cancel",
 684             (disk_get_formatted(storage_get_selected_disk(a->s)) ?
 685             _("Return to Select Disk") :
 686             _("Return to Select Primary Partition")), "", "",
 687             "p", "accelerator", "ESC",
 688
 689             NULL
 690         );
 691
 692         dfui_form_set_multiple(f, 1);
 693         dfui_form_set_extensible(f, 1);
 694
 695         if (expert) {
 696                 fi = dfui_form_field_add(f, "softupdates",
 697                     dfui_info_new(_("Softupdates"), "", ""));
 698                 dfui_field_property_set(fi, "control", "checkbox");
 699
 700                 fi = dfui_form_field_add(f, "mfsbacked",
 701                     dfui_info_new(_("MFS"), "", ""));
 702                 dfui_field_property_set(fi, "control", "checkbox");
 703
 704                 fi = dfui_form_field_add(f, "fsize",
 705                     dfui_info_new(_("Frag Sz"), "", ""));
 706
 707                 fi = dfui_form_field_add(f, "bsize",
 708                     dfui_info_new(_("Block Sz"), "", ""));
 709
 710                 dfui_form_action_add(f, "switch",
 711                     dfui_info_new(_("Switch to Normal Mode"), "", ""));
 712         } else {
 713                 dfui_form_action_add(f, "switch",
 714                     dfui_info_new(_("Switch to Expert Mode"), "", ""));
 715         }
 716
 717         return(f);
 718 }
 719
 720 /*
 721  * Returns:
 722  *      -1 = the form should be redisplayed
 723  *       0 = failure, function is over
 724  *       1 = success, function is over
 725  */
 726 static int
 727 show_create_subpartitions_form(struct dfui_form *f, struct i_fn_args *a)
 728 {
 729         struct dfui_dataset *ds;
 730         struct dfui_response *r;
 731
 732         for (;;) {
 733                 if (dfui_form_dataset_get_first(f) == NULL)
 734                         populate_create_subpartitions_form(f, a);
 735
 736                 if (!dfui_be_present(a->c, f, &r))
 737                         abort_backend();
 738
 739                 if (strcmp(dfui_response_get_action_id(r), "cancel") == 0) {
 740                         dfui_response_free(r);
 741                         return(0);
 742                 } else if (strcmp(dfui_response_get_action_id(r), "switch") == 0) {
 743                         if (check_subpartition_selections(r, a)) {
 744                                 save_subpartition_selections(r, a);
 745                                 expert = expert ? 0 : 1;
 746                                 dfui_response_free(r);
 747                                 return(-1);
 748                         }
 749                 } else {
 750                         if (check_subpartition_selections(r, a)) {
 751                                 save_subpartition_selections(r, a);
 752                                 if (!warn_subpartition_selections(a)) {
 753                                         if (!create_subpartitions(a)) {
 754                                                 inform(a->c, _("The subpartitions you chose were "
 755                                                         "not correctly created, and the "
 756                                                         "primary partition may "
 757                                                         "now be in an inconsistent state. "
 758                                                         "We recommend re-formatting it "
 759                                                         "before proceeding."));
 760                                                 dfui_response_free(r);
 761                                                 return(0);
 762                                         } else {
 763                                                 dfui_response_free(r);
 764                                                 return(1);
 765                                         }
 766                                 }
 767                         }
 768                 }
 769
 770                 dfui_form_datasets_free(f);
 771                 /* dfui_form_datasets_add_from_response(f, r); */
 772                 for (ds = dfui_response_dataset_get_first(r); ds != NULL;
 773                     ds = dfui_dataset_get_next(ds)) {
 774                         dfui_form_dataset_add(f, dfui_dataset_dup(ds));
 775                 }
 776         }
 777 }
 778
 779 /*
 780  * fn_create_subpartitions: let the user specify what subpartitions they
 781  * want on the disk, how large each should be, and where it should be mounted.
 782  */
 783 void
 784 fn_create_subpartitions(struct i_fn_args *a)
 785 {
 786         struct commands *cmds;
 787
 788         cmds = commands_new();
 789
 790         /*
 791          * Auto-disklabel the slice.
 792          * NB: one cannot use "/dev/adXsY" here -
 793          * it must be in the form "adXsY".
 794          */
 795         if (use_hammer == 1) {
 796                 command_add(cmds, "%s%s if=/dev/zero of=/dev/%s bs=32k count=16",
 797                     a->os_root, cmd_name(a, "DD"),
 798                     slice_get_raw_device_name(storage_get_selected_slice(a->s)));
 799                 command_add(cmds, "%s%s -B -r -w %s auto",
 800                     a->os_root, cmd_name(a, "DISKLABEL64"),
 801                     slice_get_raw_device_name(storage_get_selected_slice(a->s)));
 802                 commands_execute(a, cmds);
 803                 commands_free(cmds);
 804                 fn_create_subpartitions_hammer(a);
 805         } else {
 806                 command_add(cmds, "%s%s if=/dev/zero of=/dev/%s bs=32k count=16",
 807                     a->os_root, cmd_name(a, "DD"),
 808                     slice_get_raw_device_name(storage_get_selected_slice(a->s)));
 809                 command_add(cmds, "%s%s -B -r -w %s auto",
 810                     a->os_root, cmd_name(a, "DISKLABEL"),
 811                     slice_get_raw_device_name(storage_get_selected_slice(a->s)));
 812                 commands_execute(a, cmds);
 813                 commands_free(cmds);
 814                 fn_create_subpartitions_ufs(a);
 815         }
 816 }
 817
 818 void
 819 fn_create_subpartitions_ufs(struct i_fn_args *a)
 820 {
 821         struct dfui_form *f;
 822         int done = 0;
 823
 824         a->result = 0;
 825         while (!done) {
 826                 f = make_create_subpartitions_form(a);
 827                 switch (show_create_subpartitions_form(f, a)) {
 828                 case -1:
 829                         done = 0;
 830                         break;
 831                 case 0:
 832                         done = 1;
 833                         a->result = 0;
 834                         break;
 835                 case 1:
 836                         done = 1;
 837                         a->result = 1;
 838                         break;
 839                 }
 840                 dfui_form_free(f);
 841         }
 842 }