disk-utils/fdisk-menu.c

   1
   2 #include <stdio.h>
   3 #include <stdlib.h>
   4 #include <string.h>
   5 #include <ctype.h>
   6 #include <stdint.h>
   7
   8 #include "c.h"
   9 #include "fdisk.h"
  10 #include "pt-sun.h"
  11 #include "pt-mbr.h"
  12
  13 struct menu_entry {
  14         const char      key;                    /* command key */
  15         const char      *title;                 /* help string */
  16         unsigned int    normal : 1,             /* normal mode */
  17                         expert : 1,             /* expert mode */
  18                         hidden : 1;             /* be sensitive for this key,
  19                                                    but don't print it in help */
  20
  21         enum fdisk_labeltype    label;          /* only for this label */
  22         enum fdisk_labeltype    exclude;        /* all labels except this */
  23         enum fdisk_labeltype    parent;         /* for nested PT */
  24 };
  25
  26 #define IS_MENU_SEP(e)  ((e)->key == '-')
  27 #define IS_MENU_HID(e)  ((e)->hidden)
  28
  29 struct menu {
  30         enum fdisk_labeltype    label;          /* only for this label */
  31         enum fdisk_labeltype    exclude;        /* all labels except this */
  32
  33         unsigned int            nonested : 1;   /* don't make this menu active in nested PT */
  34
  35         int (*callback)(struct fdisk_context **,
  36                         const struct menu *,
  37                         const struct menu_entry *);
  38
  39         struct menu_entry       entries[];      /* NULL terminated array */
  40 };
  41
  42 struct menu_context {
  43         size_t          menu_idx;               /* the current menu */
  44         size_t          entry_idx;              /* index with in the current menu */
  45 };
  46
  47 #define MENU_CXT_EMPTY  { 0, 0 }
  48 #define DECLARE_MENU_CB(x) \
  49         static int x(struct fdisk_context **, \
  50                      const struct menu *, \
  51                      const struct menu_entry *)
  52
  53 DECLARE_MENU_CB(gpt_menu_cb);
  54 DECLARE_MENU_CB(sun_menu_cb);
  55 DECLARE_MENU_CB(sgi_menu_cb);
  56 DECLARE_MENU_CB(geo_menu_cb);
  57 DECLARE_MENU_CB(dos_menu_cb);
  58 DECLARE_MENU_CB(bsd_menu_cb);
  59 DECLARE_MENU_CB(createlabel_menu_cb);
  60 DECLARE_MENU_CB(generic_menu_cb);
  61
  62 /*
  63  * Menu entry macros:
  64  *      MENU_X*    expert mode only
  65  *      MENU_B*    both -- expert + normal mode
  66  *
  67  *      *_E  exclude this label
  68  *      *_H  hidden
  69  *      *_L  only for this label
  70  */
  71
  72 /* separator */
  73 #define MENU_SEP(t)             { .title = t, .key = '-', .normal = 1 }
  74 #define MENU_XSEP(t)            { .title = t, .key = '-', .expert = 1 }
  75 #define MENU_BSEP(t)            { .title = t, .key = '-', .expert = 1, .normal = 1 }
  76
  77 /* entry */
  78 #define MENU_ENT(k, t)          { .title = t, .key = k, .normal = 1 }
  79 #define MENU_ENT_E(k, t, l)     { .title = t, .key = k, .normal = 1, .exclude = l }
  80 #define MENU_ENT_L(k, t, l)     { .title = t, .key = k, .normal = 1, .label = l }
  81
  82 #define MENU_XENT(k, t)         { .title = t, .key = k, .expert = 1 }
  83 #define MENU_XENT_H(k, t)       { .title = t, .key = k, .expert = 1, .hidden = 1 }
  84
  85 #define MENU_BENT(k, t)         { .title = t, .key = k, .expert = 1, .normal = 1 }
  86 #define MENU_BENT_E(k, t, l)    { .title = t, .key = k, .expert = 1, .normal = 1, .exclude = l }
  87
  88 #define MENU_ENT_NEST(k, t, l, p)       { .title = t, .key = k, .normal = 1, .label = l, .parent = p }
  89 #define MENU_XENT_NEST(k, t, l, p)      { .title = t, .key = k, .expert = 1, .label = l, .parent = p }
  90
  91 /* Generic menu */
  92 struct menu menu_generic = {
  93         .callback       = generic_menu_cb,
  94         .entries        = {
  95                 MENU_BSEP(N_("Generic")),
  96                 MENU_ENT  ('d', N_("delete a partition")),
  97                 MENU_ENT  ('F', N_("list free unpartitioned space")),
  98                 MENU_ENT  ('l', N_("list known partition types")),
  99                 MENU_ENT  ('n', N_("add a new partition")),
 100                 MENU_BENT ('p', N_("print the partition table")),
 101                 MENU_ENT  ('t', N_("change a partition type")),
 102                 MENU_BENT_E('v', N_("verify the partition table"), FDISK_DISKLABEL_BSD),
 103                 MENU_ENT  ('i', N_("print information about a partition")),
 104
 105                 MENU_XENT('d', N_("print the raw data of the first sector from the device")),
 106                 MENU_XENT('D', N_("print the raw data of the disklabel from the device")),
 107                 MENU_XENT('f', N_("fix partitions order")),
 108
 109                 MENU_SEP(N_("Misc")),
 110                 MENU_BENT ('m', N_("print this menu")),
 111                 MENU_ENT_E('u', N_("change display/entry units"), FDISK_DISKLABEL_GPT),
 112                 MENU_ENT_E('x', N_("extra functionality (experts only)"), FDISK_DISKLABEL_BSD),
 113
 114                 MENU_SEP(N_("Script")),
 115                 MENU_ENT  ('I', N_("load disk layout from sfdisk script file")),
 116                 MENU_ENT  ('O', N_("dump disk layout to sfdisk script file")),
 117
 118                 MENU_BSEP(N_("Save & Exit")),
 119                 MENU_ENT_E('w', N_("write table to disk and exit"), FDISK_DISKLABEL_BSD),
 120                 MENU_ENT_L('w', N_("write table to disk"), FDISK_DISKLABEL_BSD),
 121                 MENU_BENT ('q', N_("quit without saving changes")),
 122                 MENU_XENT ('r', N_("return to main menu")),
 123
 124                 MENU_ENT_NEST('r', N_("return from BSD to DOS"), FDISK_DISKLABEL_BSD, FDISK_DISKLABEL_DOS),
 125
 126                 { 0, NULL }
 127         }
 128 };
 129
 130 struct menu menu_createlabel = {
 131         .callback = createlabel_menu_cb,
 132         .exclude = FDISK_DISKLABEL_BSD,
 133         .nonested = 1,
 134         .entries = {
 135                 MENU_SEP(N_("Create a new label")),
 136                 MENU_ENT('g', N_("create a new empty GPT partition table")),
 137                 MENU_ENT('G', N_("create a new empty SGI (IRIX) partition table")),
 138                 MENU_ENT('o', N_("create a new empty DOS partition table")),
 139                 MENU_ENT('s', N_("create a new empty Sun partition table")),
 140
 141                 /* backward compatibility -- be sensitive to 'g', but don't
 142                  * print it in the expert menu */
 143                 MENU_XENT_H('g', N_("create an IRIX (SGI) partition table")),
 144                 { 0, NULL }
 145         }
 146 };
 147
 148 struct menu menu_geo = {
 149         .callback = geo_menu_cb,
 150         .exclude = FDISK_DISKLABEL_GPT | FDISK_DISKLABEL_BSD,
 151         .entries = {
 152                 MENU_XSEP(N_("Geometry")),
 153                 MENU_XENT('c', N_("change number of cylinders")),
 154                 MENU_XENT('h', N_("change number of heads")),
 155                 MENU_XENT('s', N_("change number of sectors/track")),
 156                 { 0, NULL }
 157         }
 158 };
 159
 160 struct menu menu_gpt = {
 161         .callback = gpt_menu_cb,
 162         .label = FDISK_DISKLABEL_GPT,
 163         .entries = {
 164                 MENU_XSEP(N_("GPT")),
 165                 MENU_XENT('i', N_("change disk GUID")),
 166                 MENU_XENT('n', N_("change partition name")),
 167                 MENU_XENT('u', N_("change partition UUID")),
 168                 MENU_XENT('M', N_("enter protective/hybrid MBR")),
 169
 170                 MENU_XSEP(""),
 171                 MENU_XENT('A', N_("toggle the legacy BIOS bootable flag")),
 172                 MENU_XENT('B', N_("toggle the no block IO protocol flag")),
 173                 MENU_XENT('R', N_("toggle the required partition flag")),
 174                 MENU_XENT('S', N_("toggle the GUID specific bits")),
 175
 176                 { 0, NULL }
 177         }
 178 };
 179
 180 struct menu menu_sun = {
 181         .callback = sun_menu_cb,
 182         .label = FDISK_DISKLABEL_SUN,
 183         .entries = {
 184                 MENU_BSEP(N_("Sun")),
 185                 MENU_ENT('a', N_("toggle the read-only flag")),
 186                 MENU_ENT('c', N_("toggle the mountable flag")),
 187
 188                 MENU_XENT('a', N_("change number of alternate cylinders")),
 189                 MENU_XENT('e', N_("change number of extra sectors per cylinder")),
 190                 MENU_XENT('i', N_("change interleave factor")),
 191                 MENU_XENT('o', N_("change rotation speed (rpm)")),
 192                 MENU_XENT('y', N_("change number of physical cylinders")),
 193                 { 0, NULL }
 194         }
 195 };
 196
 197 struct menu menu_sgi = {
 198         .callback = sgi_menu_cb,
 199         .label = FDISK_DISKLABEL_SGI,
 200         .entries = {
 201                 MENU_SEP(N_("SGI")),
 202                 MENU_ENT('a', N_("select bootable partition")),
 203                 MENU_ENT('b', N_("edit bootfile entry")),
 204                 MENU_ENT('c', N_("select sgi swap partition")),
 205                 MENU_ENT('i', N_("create SGI info")),
 206                 { 0, NULL }
 207         }
 208 };
 209
 210 struct menu menu_dos = {
 211         .callback = dos_menu_cb,
 212         .label = FDISK_DISKLABEL_DOS,
 213         .entries = {
 214                 MENU_BSEP(N_("DOS (MBR)")),
 215                 MENU_ENT('a', N_("toggle a bootable flag")),
 216                 MENU_ENT('b', N_("edit nested BSD disklabel")),
 217                 MENU_ENT('c', N_("toggle the dos compatibility flag")),
 218
 219                 MENU_XENT('b', N_("move beginning of data in a partition")),
 220                 MENU_XENT('i', N_("change the disk identifier")),
 221
 222                 MENU_XENT_NEST('M', N_("return from protective/hybrid MBR to GPT"),
 223                                         FDISK_DISKLABEL_DOS, FDISK_DISKLABEL_GPT),
 224                 { 0, NULL }
 225         }
 226 };
 227
 228 struct menu menu_bsd = {
 229         .callback = bsd_menu_cb,
 230         .label = FDISK_DISKLABEL_BSD,
 231         .entries = {
 232                 MENU_SEP(N_("BSD")),
 233                 MENU_ENT('e', N_("edit drive data")),
 234                 MENU_ENT('i', N_("install bootstrap")),
 235                 MENU_ENT('s', N_("show complete disklabel")),
 236                 MENU_ENT('x', N_("link BSD partition to non-BSD partition")),
 237                 { 0, NULL }
 238         }
 239 };
 240
 241 static const struct menu *menus[] = {
 242         &menu_gpt,
 243         &menu_sun,
 244         &menu_sgi,
 245         &menu_dos,
 246         &menu_bsd,
 247         &menu_geo,
 248         &menu_generic,
 249         &menu_createlabel,
 250 };
 251
 252 static const struct menu_entry *next_menu_entry(
 253                         struct fdisk_context *cxt,
 254                         struct menu_context *mc)
 255 {
 256         struct fdisk_label *lb = fdisk_get_label(cxt, NULL);
 257         struct fdisk_context *parent = fdisk_get_parent(cxt);
 258         unsigned int type = 0, pr_type = 0;
 259
 260         assert(cxt);
 261
 262         if (lb)
 263                 type = fdisk_label_get_type(lb);
 264         if (parent)
 265                 pr_type = fdisk_label_get_type(fdisk_get_label(parent, NULL));
 266
 267         while (mc->menu_idx < ARRAY_SIZE(menus)) {
 268                 const struct menu *m = menus[mc->menu_idx];
 269                 const struct menu_entry *e = &(m->entries[mc->entry_idx]);
 270
 271                 /*
 272                  * whole-menu filter
 273                  */
 274
 275                 /* no more entries */
 276                 if (e->title == NULL ||
 277                 /* menu wanted for specified labels only */
 278                     (m->label && lb && !(m->label & type)) ||
 279                 /* unwanted for nested PT */
 280                     (m->nonested && parent) ||
 281                 /* menu excluded for specified labels */
 282                     (m->exclude && lb && (m->exclude & type))) {
 283                         mc->menu_idx++;
 284                         mc->entry_idx = 0;
 285                         continue;
 286                 }
 287
 288                 /*
 289                  * per entry filter
 290                  */
 291
 292                 /* excluded for the current label */
 293                 if ((e->exclude && lb && e->exclude & type) ||
 294                 /* entry wanted for specified labels only */
 295                     (e->label && lb && !(e->label & type)) ||
 296                 /* exclude non-expert entries in expect mode */
 297                     (e->expert == 0 && fdisk_is_details(cxt)) ||
 298                 /* nested only */
 299                     (e->parent && (!parent || pr_type != e->parent)) ||
 300                 /* exclude non-normal entries in normal mode */
 301                     (e->normal == 0 && !fdisk_is_details(cxt))) {
 302                         mc->entry_idx++;
 303                         continue;
 304                 }
 305                 mc->entry_idx++;
 306                 return e;
 307
 308         }
 309         return NULL;
 310 }
 311
 312 /* returns @menu and menu entry for then @key */
 313 static const struct menu_entry *get_fdisk_menu_entry(
 314                 struct fdisk_context *cxt,
 315                 int key,
 316                 const struct menu **menu)
 317 {
 318         struct menu_context mc = MENU_CXT_EMPTY;
 319         const struct menu_entry *e;
 320
 321         while ((e = next_menu_entry(cxt, &mc))) {
 322                 if (IS_MENU_SEP(e) || e->key != key)
 323                         continue;
 324
 325                 if (menu)
 326                         *menu = menus[mc.menu_idx];
 327                 return e;
 328         }
 329
 330         return NULL;
 331 }
 332
 333 static int menu_detect_collisions(struct fdisk_context *cxt)
 334 {
 335         struct menu_context mc = MENU_CXT_EMPTY;
 336         const struct menu_entry *e, *r;
 337
 338         while ((e = next_menu_entry(cxt, &mc))) {
 339                 if (IS_MENU_SEP(e))
 340                         continue;
 341
 342                 r = get_fdisk_menu_entry(cxt, e->key, NULL);
 343                 if (!r) {
 344                         DBG(MENU, ul_debug("warning: not found "
 345                                         "entry for %c", e->key));
 346                         return -1;
 347                 }
 348                 if (r != e) {
 349                         DBG(MENU, ul_debug("warning: duplicate key '%c'",
 350                                                 e->key));
 351                         DBG(MENU, ul_debug("       : %s", e->title));
 352                         DBG(MENU, ul_debug("       : %s", r->title));
 353                         abort();
 354                 }
 355         }
 356
 357         return 0;
 358 }
 359
 360 static int print_fdisk_menu(struct fdisk_context *cxt)
 361 {
 362         struct menu_context mc = MENU_CXT_EMPTY;
 363         const struct menu_entry *e;
 364
 365         ON_DBG(MENU, menu_detect_collisions(cxt));
 366
 367         if (fdisk_is_details(cxt))
 368                 printf(_("\nHelp (expert commands):\n"));
 369         else
 370                 printf(_("\nHelp:\n"));
 371
 372         while ((e = next_menu_entry(cxt, &mc))) {
 373                 if (IS_MENU_HID(e))
 374                         continue;       /* hidden entry */
 375                 if (IS_MENU_SEP(e) && (!e->title || !*e->title))
 376                         printf("\n");
 377                 else if (IS_MENU_SEP(e)) {
 378                         color_scheme_enable("help-title", UL_COLOR_BOLD);
 379                         printf("\n  %s\n", _(e->title));
 380                         color_disable();
 381                 } else
 382                         printf("   %c   %s\n", e->key, _(e->title));
 383         }
 384         fputc('\n', stdout);
 385
 386         if (fdisk_get_parent(cxt)) {
 387                 struct fdisk_label *l = fdisk_get_label(cxt, NULL),
 388                                    *p = fdisk_get_label(fdisk_get_parent(cxt), NULL);
 389
 390                 fdisk_info(cxt, _("You're editing nested '%s' partition table, "
 391                                   "primary partition table is '%s'."),
 392                                 fdisk_label_get_name(l),
 393                                 fdisk_label_get_name(p));
 394         }
 395
 396         return 0;
 397 }
 398
 399 /* Asks for command, verify the key and perform the command or
 400  * returns the command key if no callback for the command is
 401  * implemented.
 402  *
 403  * Note that this function might exchange the context pointer to
 404  * switch to another (nested) context.
 405  *
 406  * Returns: <0 on error
 407  *           0 on success (the command performed)
 408  *          >0 if no callback (then returns the key)
 409  */
 410 int process_fdisk_menu(struct fdisk_context **cxt0)
 411 {
 412         struct fdisk_context *cxt = *cxt0;
 413         const struct menu_entry *ent;
 414         const struct menu *menu;
 415         int key, rc;
 416         const char *prompt;
 417         char buf[BUFSIZ];
 418
 419         if (fdisk_is_details(cxt))
 420                 prompt = _("Expert command (m for help): ");
 421         else
 422                 prompt = _("Command (m for help): ");
 423
 424         fputc('\n',stdout);
 425         rc = get_user_reply(cxt, prompt, buf, sizeof(buf));
 426         if (rc)
 427                 return rc;
 428
 429         key = buf[0];
 430         ent = get_fdisk_menu_entry(cxt, key, &menu);
 431         if (!ent) {
 432                 fdisk_warnx(cxt, _("%c: unknown command"), key);
 433                 return -EINVAL;
 434         }
 435
 436         rc = 0;
 437         DBG(MENU, ul_debug("selected: key=%c, entry='%s'",
 438                                 key, ent->title));
 439
 440         /* menu has implemented callback, use it */
 441         if (menu->callback)
 442                 rc = menu->callback(cxt0, menu, ent);
 443         else {
 444                 DBG(MENU, ul_debug("no callback for key '%c'", key));
 445                 rc = -EINVAL;
 446         }
 447
 448         DBG(MENU, ul_debug("process menu done [rc=%d]", rc));
 449         return rc;
 450 }
 451
 452 static int script_read(struct fdisk_context *cxt)
 453 {
 454         struct fdisk_script *sc = NULL;
 455         char *filename = NULL;
 456         int rc;
 457
 458         rc = fdisk_ask_string(cxt, _("Enter script file name"), &filename);
 459         if (rc)
 460                 return rc;
 461
 462         errno = 0;
 463         sc = fdisk_new_script_from_file(cxt, filename);
 464         if (!sc && errno)
 465                 fdisk_warn(cxt, _("Cannot open %s"), filename);
 466         else if (!sc)
 467                 fdisk_warnx(cxt, _("Failed to parse script file %s"), filename);
 468         else if (fdisk_apply_script(cxt, sc) != 0)
 469                 fdisk_warnx(cxt, _("Failed to apply script %s"), filename);
 470         else
 471                 fdisk_info(cxt, _("Script successfully applied."));
 472
 473         fdisk_unref_script(sc);
 474         free(filename);
 475         return rc;
 476 }
 477
 478 static int script_write(struct fdisk_context *cxt)
 479 {
 480         struct fdisk_script *sc = NULL;
 481         char *filename = NULL;
 482         FILE *f = NULL;
 483         int rc;
 484
 485         rc = fdisk_ask_string(cxt, _("Enter script file name"), &filename);
 486         if (rc)
 487                 return rc;
 488
 489         sc = fdisk_new_script(cxt);
 490         if (!sc) {
 491                 fdisk_warn(cxt, _("Failed to allocate script handler"));
 492                 goto done;
 493         }
 494
 495         rc = fdisk_script_read_context(sc, NULL);
 496         if (rc) {
 497                 fdisk_warnx(cxt, _("Failed to transform disk layout into script"));
 498                 goto done;
 499         }
 500
 501         f = fopen(filename, "w");
 502         if (!f) {
 503                 fdisk_warn(cxt, _("Cannot open %s"), filename);
 504                 goto done;
 505         }
 506
 507         rc = fdisk_script_write_file(sc, f);
 508         if (rc)
 509                 fdisk_warn(cxt, _("Failed to write script %s"), filename);
 510         else
 511                 fdisk_info(cxt, _("Script successfully saved."));
 512 done:
 513         if (f)
 514                 fclose(f);
 515         fdisk_unref_script(sc);
 516         free(filename);
 517         return rc;
 518 }
 519
 520 /*
 521  * Basic fdisk actions
 522  */
 523 static int generic_menu_cb(struct fdisk_context **cxt0,
 524                        const struct menu *menu __attribute__((__unused__)),
 525                        const struct menu_entry *ent)
 526 {
 527         struct fdisk_context *cxt = *cxt0;
 528         int rc = 0;
 529         size_t n;
 530
 531         /* actions shared between expert and normal mode */
 532         switch (ent->key) {
 533         case 'p':
 534                 list_disk_geometry(cxt);
 535                 list_disklabel(cxt);
 536                 break;
 537         case 'w':
 538                 if (fdisk_is_readonly(cxt)) {
 539                         fdisk_warnx(cxt, _("Device open in read-only mode."));
 540                         break;
 541                 }
 542                 rc = fdisk_write_disklabel(cxt);
 543                 if (rc)
 544                         err(EXIT_FAILURE, _("failed to write disklabel"));
 545                 if (fdisk_get_parent(cxt))
 546                         break; /* nested PT, don't leave */
 547                 fdisk_info(cxt, _("The partition table has been altered."));
 548                 rc = fdisk_reread_partition_table(cxt);
 549                 if (!rc)
 550                         rc = fdisk_deassign_device(cxt, 0);
 551                 /* fallthrough */
 552         case 'q':
 553                 fdisk_unref_context(cxt);
 554                 fputc('\n', stdout);
 555                 exit(rc == 0 ? EXIT_SUCCESS : EXIT_FAILURE);
 556         case 'm':
 557                 rc = print_fdisk_menu(cxt);
 558                 break;
 559         case 'v':
 560                 rc = fdisk_verify_disklabel(cxt);
 561                 break;
 562         case 'i':
 563                 rc = print_partition_info(cxt);
 564                 break;
 565         case 'F':
 566                 list_freespace(cxt);
 567                 break;
 568         }
 569
 570         /* expert mode */
 571         if (ent->expert) {
 572                 switch (ent->key) {
 573                 case 'd':
 574                         dump_firstsector(cxt);
 575                         break;
 576                 case 'D':
 577                         dump_disklabel(cxt);
 578                         break;
 579                 case 'f':
 580                         rc = fdisk_reorder_partitions(cxt);
 581                         break;
 582                 case 'r':
 583                         rc = fdisk_enable_details(cxt, 0);
 584                         break;
 585                 }
 586                 return rc;
 587         }
 588
 589         /* normal mode */
 590         switch (ent->key) {
 591         case 'd':
 592                 rc = fdisk_ask_partnum(cxt, &n, FALSE);
 593                 if (!rc)
 594                         rc = fdisk_delete_partition(cxt, n);
 595                 if (rc)
 596                         fdisk_warnx(cxt, _("Could not delete partition %zu"), n + 1);
 597                 else
 598                         fdisk_info(cxt, _("Partition %zu has been deleted."), n + 1);
 599                 break;
 600         case 'I':
 601                 script_read(cxt);
 602                 break;
 603         case 'O':
 604                 script_write(cxt);
 605                 break;
 606         case 'l':
 607                 list_partition_types(cxt);
 608                 break;
 609         case 'n':
 610                 rc = fdisk_add_partition(cxt, NULL, NULL);
 611                 break;
 612         case 't':
 613                 change_partition_type(cxt);
 614                 break;
 615         case 'u':
 616                 fdisk_set_unit(cxt,
 617                         fdisk_use_cylinders(cxt) ? "sectors" :
 618                                                            "cylinders");
 619                 if (fdisk_use_cylinders(cxt))
 620                         fdisk_info(cxt, _("Changing display/entry units to cylinders (DEPRECATED!)."));
 621                 else
 622                         fdisk_info(cxt, _("Changing display/entry units to sectors."));
 623                 break;
 624         case 'x':
 625                 fdisk_enable_details(cxt, 1);
 626                 break;
 627         case 'r':
 628                 /* return from nested BSD to DOS */
 629                 if (fdisk_get_parent(cxt)) {
 630                         *cxt0 = fdisk_get_parent(cxt);
 631
 632                         fdisk_info(cxt, _("Leaving nested disklabel."));
 633                         fdisk_unref_context(cxt);
 634                         cxt = *cxt0;
 635                 }
 636                 break;
 637         }
 638
 639         return rc;
 640 }
 641
 642
 643 /*
 644  * This is fdisk frontend for GPT specific libfdisk functions that
 645  * are not expported by generic libfdisk API.
 646  */
 647 static int gpt_menu_cb(struct fdisk_context **cxt0,
 648                        const struct menu *menu __attribute__((__unused__)),
 649                        const struct menu_entry *ent)
 650 {
 651         struct fdisk_context *cxt = *cxt0;
 652         struct fdisk_context *mbr;
 653         struct fdisk_partition *pa = NULL;
 654         size_t n;
 655         int rc = 0;
 656
 657         assert(cxt);
 658         assert(ent);
 659         assert(fdisk_is_label(cxt, GPT));
 660
 661         DBG(MENU, ul_debug("enter GPT menu"));
 662
 663         if (ent->expert) {
 664                 switch (ent->key) {
 665                 case 'i':
 666                         return fdisk_set_disklabel_id(cxt);
 667                 case 'M':
 668                         mbr = fdisk_new_nested_context(cxt, "dos");
 669                         if (!mbr)
 670                                 return -ENOMEM;
 671                         *cxt0 = cxt = mbr;
 672                         fdisk_enable_details(cxt, 1);   /* keep us in expert mode */
 673                         fdisk_info(cxt, _("Entering protective/hybrid MBR disklabel."));
 674                         return 0;
 675                 }
 676
 677                 /* actions where is necessary partnum */
 678                 rc = fdisk_ask_partnum(cxt, &n, FALSE);
 679                 if (rc)
 680                         return rc;
 681
 682                 switch(ent->key) {
 683                 case 'u':
 684                         pa = fdisk_new_partition();     /* new template */
 685                         if (!pa)
 686                                 rc = -ENOMEM;
 687                         else {
 688                                 char *str = NULL;
 689                                 rc = fdisk_ask_string(cxt, _("New UUID (in 8-4-4-4-12 format)"), &str);
 690                                 if (!rc)
 691                                         rc = fdisk_partition_set_uuid(pa, str);
 692                                 if (!rc)
 693                                         rc = fdisk_set_partition(cxt, n, pa);
 694                                 free(str);
 695                                 fdisk_unref_partition(pa);
 696                         }
 697                         break;
 698                 case 'n':
 699                         pa = fdisk_new_partition();     /* new template */
 700                         if (!pa)
 701                                 rc = -ENOMEM;
 702                         else {
 703                                 char *str = NULL;
 704                                 rc = fdisk_ask_string(cxt, _("New name"), &str);
 705                                 if (!rc)
 706                                         rc = fdisk_partition_set_name(pa, str);
 707                                 if (!rc)
 708                                         rc = fdisk_set_partition(cxt, n, pa);
 709                                 free(str);
 710                                 fdisk_unref_partition(pa);
 711                         }
 712                         break;
 713                 case 'A':
 714                         rc = fdisk_toggle_partition_flag(cxt, n, GPT_FLAG_LEGACYBOOT);
 715                         break;
 716                 case 'B':
 717                         rc = fdisk_toggle_partition_flag(cxt, n, GPT_FLAG_NOBLOCK);
 718                         break;
 719                 case 'R':
 720                         rc = fdisk_toggle_partition_flag(cxt, n, GPT_FLAG_REQUIRED);
 721                         break;
 722                 case 'S':
 723                         rc = fdisk_toggle_partition_flag(cxt, n, GPT_FLAG_GUIDSPECIFIC);
 724                         break;
 725                 }
 726         }
 727
 728         return rc;
 729 }
 730
 731
 732 /*
 733  * This is fdisk frontend for MBR specific libfdisk functions that
 734  * are not expported by generic libfdisk API.
 735  */
 736 static int dos_menu_cb(struct fdisk_context **cxt0,
 737                        const struct menu *menu __attribute__((__unused__)),
 738                        const struct menu_entry *ent)
 739 {
 740         struct fdisk_context *cxt = *cxt0;
 741         int rc = 0;
 742
 743         DBG(MENU, ul_debug("enter DOS menu"));
 744
 745         if (!ent->expert) {
 746                 switch (ent->key) {
 747                 case 'a':
 748                 {
 749                         size_t n;
 750                         rc = fdisk_ask_partnum(cxt, &n, FALSE);
 751                         if (!rc)
 752                                 rc = fdisk_toggle_partition_flag(cxt, n, DOS_FLAG_ACTIVE);
 753                         break;
 754                 }
 755                 case 'b':
 756                 {
 757                         struct fdisk_context *bsd
 758                                         = fdisk_new_nested_context(cxt, "bsd");
 759                         if (!bsd)
 760                                 return -ENOMEM;
 761                         if (!fdisk_has_label(bsd))
 762                                 rc = fdisk_create_disklabel(bsd, "bsd");
 763                         if (rc)
 764                                 fdisk_unref_context(bsd);
 765                         else {
 766                                 *cxt0 = cxt = bsd;
 767                                 fdisk_info(cxt, _("Entering nested BSD disklabel."));
 768                         }
 769                         break;
 770                 }
 771                 case 'c':
 772                         toggle_dos_compatibility_flag(cxt);
 773                         break;
 774                 }
 775                 return rc;
 776         }
 777
 778         /* expert mode */
 779         switch (ent->key) {
 780         case 'b':
 781         {
 782                 size_t n;
 783                 rc = fdisk_ask_partnum(cxt, &n, FALSE);
 784                 if (!rc)
 785                         rc = fdisk_dos_move_begin(cxt, n);
 786                 break;
 787         }
 788         case 'i':
 789                 rc = fdisk_set_disklabel_id(cxt);
 790                 break;
 791         case 'M':
 792                 /* return from nested MBR to GPT */
 793                 if (fdisk_get_parent(cxt)) {
 794                         *cxt0 = fdisk_get_parent(cxt);
 795
 796                         fdisk_info(cxt, _("Leaving nested disklabel."));
 797                         fdisk_unref_context(cxt);
 798                         cxt = *cxt0;
 799                 }
 800                 break;
 801         }
 802         return rc;
 803 }
 804
 805 static int sun_menu_cb(struct fdisk_context **cxt0,
 806                        const struct menu *menu __attribute__((__unused__)),
 807                        const struct menu_entry *ent)
 808 {
 809         struct fdisk_context *cxt = *cxt0;
 810         int rc = 0;
 811
 812         DBG(MENU, ul_debug("enter SUN menu"));
 813
 814         assert(cxt);
 815         assert(ent);
 816         assert(fdisk_is_label(cxt, SUN));
 817
 818         DBG(MENU, ul_debug("enter SUN menu"));
 819
 820         /* normal mode */
 821         if (!ent->expert) {
 822                 size_t n;
 823
 824                 rc = fdisk_ask_partnum(cxt, &n, FALSE);
 825                 if (rc)
 826                         return rc;
 827                 switch (ent->key) {
 828                 case 'a':
 829                         rc = fdisk_toggle_partition_flag(cxt, n, SUN_FLAG_RONLY);
 830                         break;
 831                 case 'c':
 832                         rc = fdisk_toggle_partition_flag(cxt, n, SUN_FLAG_UNMNT);
 833                         break;
 834                 }
 835                 return rc;
 836         }
 837
 838         /* expert mode */
 839         switch (ent->key) {
 840         case 'a':
 841                 rc = fdisk_sun_set_alt_cyl(cxt);
 842                 break;
 843         case 'e':
 844                 rc = fdisk_sun_set_xcyl(cxt);
 845                 break;
 846         case 'i':
 847                 rc = fdisk_sun_set_ilfact(cxt);
 848                 break;
 849         case 'o':
 850                 rc = fdisk_sun_set_rspeed(cxt);
 851                 break;
 852         case 'y':
 853                 rc = fdisk_sun_set_pcylcount(cxt);
 854                 break;
 855         }
 856         return rc;
 857 }
 858
 859 static int sgi_menu_cb(struct fdisk_context **cxt0,
 860                        const struct menu *menu __attribute__((__unused__)),
 861                        const struct menu_entry *ent)
 862 {
 863         struct fdisk_context *cxt = *cxt0;
 864         int rc = -EINVAL;
 865         size_t n = 0;
 866
 867         DBG(MENU, ul_debug("enter SGI menu"));
 868
 869         assert(cxt);
 870         assert(ent);
 871         assert(fdisk_is_label(cxt, SGI));
 872
 873         if (ent->expert)
 874                 return rc;
 875
 876         switch (ent->key) {
 877         case 'a':
 878                 rc = fdisk_ask_partnum(cxt, &n, FALSE);
 879                 if (!rc)
 880                         rc = fdisk_toggle_partition_flag(cxt, n, SGI_FLAG_BOOT);
 881                 break;
 882         case 'b':
 883                 fdisk_sgi_set_bootfile(cxt);
 884                 break;
 885         case 'c':
 886                 rc = fdisk_ask_partnum(cxt, &n, FALSE);
 887                 if (!rc)
 888                         rc = fdisk_toggle_partition_flag(cxt, n, SGI_FLAG_SWAP);
 889                 break;
 890         case 'i':
 891                 rc = fdisk_sgi_create_info(cxt);
 892                 break;
 893         }
 894
 895         return rc;
 896 }
 897
 898 /*
 899  * This is fdisk frontend for BSD specific libfdisk functions that
 900  * are not expported by generic libfdisk API.
 901  */
 902 static int bsd_menu_cb(struct fdisk_context **cxt0,
 903                        const struct menu *menu __attribute__((__unused__)),
 904                        const struct menu_entry *ent)
 905 {
 906         struct fdisk_context *cxt = *cxt0;
 907         int rc = 0, org;
 908
 909         assert(cxt);
 910         assert(ent);
 911         assert(fdisk_is_label(cxt, BSD));
 912
 913         DBG(MENU, ul_debug("enter BSD menu"));
 914
 915         switch(ent->key) {
 916         case 'e':
 917                 rc = fdisk_bsd_edit_disklabel(cxt);
 918                 break;
 919         case 'i':
 920                 rc = fdisk_bsd_write_bootstrap(cxt);
 921                 break;
 922         case 's':
 923                 org = fdisk_is_details(cxt);
 924
 925                 fdisk_enable_details(cxt, 1);
 926                 list_disklabel(cxt);
 927                 fdisk_enable_details(cxt, org);
 928                 break;
 929         case 'x':
 930                 rc = fdisk_bsd_link_partition(cxt);
 931                 break;
 932         }
 933         return rc;
 934 }
 935
 936 /* C/H/S commands */
 937 static int geo_menu_cb(struct fdisk_context **cxt0,
 938                        const struct menu *menu __attribute__((__unused__)),
 939                        const struct menu_entry *ent)
 940 {
 941         struct fdisk_context *cxt = *cxt0;
 942         int rc = -EINVAL;
 943         uintmax_t c = 0, h = 0, s = 0;
 944
 945         DBG(MENU, ul_debug("enter GEO menu"));
 946
 947         assert(cxt);
 948         assert(ent);
 949
 950         switch (ent->key) {
 951         case 'c':
 952                 rc =  fdisk_ask_number(cxt, 1, fdisk_get_geom_cylinders(cxt),
 953                                 1048576, _("Number of cylinders"), &c);
 954                 break;
 955         case 'h':
 956                 rc =  fdisk_ask_number(cxt, 1, fdisk_get_geom_heads(cxt),
 957                                 256, _("Number of heads"), &h);
 958                 break;
 959         case 's':
 960                 rc =  fdisk_ask_number(cxt, 1, fdisk_get_geom_sectors(cxt),
 961                                 63, _("Number of sectors"), &s);
 962                 break;
 963         }
 964
 965         if (!rc)
 966                 fdisk_override_geometry(cxt, c, h, s);
 967         return rc;
 968 }
 969
 970 static int createlabel_menu_cb(struct fdisk_context **cxt0,
 971                        const struct menu *menu __attribute__((__unused__)),
 972                        const struct menu_entry *ent)
 973 {
 974         struct fdisk_context *cxt = *cxt0;
 975         int rc = -EINVAL;
 976
 977         DBG(MENU, ul_debug("enter Create label menu"));
 978
 979         assert(cxt);
 980         assert(ent);
 981
 982         if (ent->expert) {
 983                 switch (ent->key) {
 984                 case 'g':
 985                         /* Deprecated, use 'G' in main menu, just for backward
 986                          * compatibility only. */
 987                         rc = fdisk_create_disklabel(cxt, "sgi");
 988                         break;
 989                 }
 990                 return rc;
 991         }
 992
 993         switch (ent->key) {
 994                 case 'g':
 995                         fdisk_create_disklabel(cxt, "gpt");
 996                         break;
 997                 case 'G':
 998                         fdisk_create_disklabel(cxt, "sgi");
 999                         break;
1000                 case 'o':
1001                         fdisk_create_disklabel(cxt, "dos");
1002                         break;
1003                 case 's':
1004                         fdisk_create_disklabel(cxt, "sun");
1005                         break;
1006         }
1007         return rc;
1008 }