label.c revision 8621
1/* 2 * The new sysinstall program. 3 * 4 * This is probably the last program in the `sysinstall' line - the next 5 * generation being essentially a complete rewrite. 6 * 7 * $Id: label.c,v 1.8 1995/05/18 18:02:31 jkh Exp $ 8 * 9 * Copyright (c) 1995 10 * Jordan Hubbard. All rights reserved. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer, 17 * verbatim and that no modifications are made prior to this 18 * point in the file. 19 * 2. Redistributions in binary form must reproduce the above copyright 20 * notice, this list of conditions and the following disclaimer in the 21 * documentation and/or other materials provided with the distribution. 22 * 3. All advertising materials mentioning features or use of this software 23 * must display the following acknowledgement: 24 * This product includes software developed by Jordan Hubbard 25 * for the FreeBSD Project. 26 * 4. The name of Jordan Hubbard or the FreeBSD project may not be used to 27 * endorse or promote products derived from this software without specific 28 * prior written permission. 29 * 30 * THIS SOFTWARE IS PROVIDED BY JORDAN HUBBARD ``AS IS'' AND 31 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 32 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 33 * ARE DISCLAIMED. IN NO EVENT SHALL JORDAN HUBBARD OR HIS PETS BE LIABLE 34 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 35 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 36 * OR SERVICES; LOSS OF USE, DATA, LIFE OR PROFITS; OR BUSINESS INTERRUPTION) 37 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 38 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 39 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 40 * SUCH DAMAGE. 41 * 42 */ 43 44#include "sysinstall.h" 45#include <ctype.h> 46#include <sys/disklabel.h> 47 48/* 49 * Everything to do with editing the contents of disk labels. 50 */ 51 52/* A nice message we use a lot in the disklabel editor */ 53#define MSG_NOT_APPLICABLE "That option is not applicable here" 54 55/* 56 * I make some pretty gross assumptions about having a max of 50 chunks 57 * total - 8 slices and 42 partitions. I can't easily display many more 58 * than that on the screen at once! 59 * 60 * For 2.1 I'll revisit this and try to make it more dynamic, but since 61 * this will catch 99.99% of all possible cases, I'm not too worried. 62 */ 63#define MAX_CHUNKS 50 64 65/* Where to start printing the freebsd slices */ 66#define CHUNK_SLICE_START_ROW 2 67#define CHUNK_PART_START_ROW 10 68 69/* The smallest filesystem we're willing to create */ 70#define FS_MIN_SIZE 2048 71 72 73/* All the chunks currently displayed on the screen */ 74static struct { 75 struct disk *d; 76 struct chunk *c; 77 PartType type; 78} label_chunk_info[MAX_CHUNKS + 1]; 79static int here; 80 81/* See if we're already using a desired partition name */ 82static Boolean 83check_conflict(char *name) 84{ 85 int i; 86 87 for (i = 0; label_chunk_info[i].d; i++) 88 if (label_chunk_info[i].type == PART_FILESYSTEM 89 && label_chunk_info[i].c->private 90 && !strcmp(((PartInfo *)label_chunk_info[i].c->private)->mountpoint, name)) 91 return TRUE; 92 return FALSE; 93} 94 95/* How much space is in this FreeBSD slice? */ 96static int 97space_free(struct chunk *c) 98{ 99 struct chunk *c1 = c->part; 100 int sz = c->size; 101 102 while (c1) { 103 if (c1->type != unused) 104 sz -= c1->size; 105 c1 = c1->next; 106 } 107 if (sz < 0) 108 msgFatal("Partitions are larger than actual chunk??"); 109 return sz; 110} 111 112/* Snapshot the current situation into the displayed chunks structure */ 113static void 114record_label_chunks() 115{ 116 int i, j, p; 117 struct chunk *c1, *c2; 118 Device **devs; 119 Disk *d; 120 121 devs = deviceFind(NULL, DEVICE_TYPE_DISK); 122 if (!devs) { 123 msgConfirm("No disks found!"); 124 return; 125 } 126 127 j = p = 0; 128 /* First buzz through and pick up the FreeBSD slices */ 129 for (i = 0; devs[i]; i++) { 130 if (!devs[i]->enabled) 131 continue; 132 d = (Disk *)devs[i]->private; 133 if (!d->chunks) 134 msgFatal("No chunk list found for %s!", d->name); 135 136 /* Put the slice entries first */ 137 for (c1 = d->chunks->part; c1; c1 = c1->next) { 138 if (c1->type == freebsd) { 139 label_chunk_info[j].type = PART_SLICE; 140 label_chunk_info[j].d = d; 141 label_chunk_info[j].c = c1; 142 ++j; 143 } 144 } 145 } 146 /* Now run through again and get the FreeBSD partition entries */ 147 for (i = 0; devs[i]; i++) { 148 if (!devs[i]->enabled) 149 continue; 150 d = (Disk *)devs[i]->private; 151 /* Then buzz through and pick up the partitions */ 152 for (c1 = d->chunks->part; c1; c1 = c1->next) { 153 if (c1->type == freebsd) { 154 for (c2 = c1->part; c2; c2 = c2->next) { 155 if (c2->type == part) { 156 if (c2->subtype == FS_SWAP) 157 label_chunk_info[j].type = PART_SWAP; 158 else 159 label_chunk_info[j].type = PART_FILESYSTEM; 160 label_chunk_info[j].d = d; 161 label_chunk_info[j].c = c2; 162 ++j; 163 } 164 } 165 } 166 else if (c1->type == fat) { 167 label_chunk_info[j].type = PART_FAT; 168 label_chunk_info[j].d = d; 169 label_chunk_info[j].c = c1; 170 } 171 } 172 } 173 label_chunk_info[j].d = NULL; 174 label_chunk_info[j].c = NULL; 175 if (here >= j) 176 here = j ? j - 1 : 0; 177} 178 179/* A new partition entry */ 180static PartInfo * 181new_part(char *mpoint, Boolean newfs) 182{ 183 PartInfo *ret; 184 185 ret = (PartInfo *)safe_malloc(sizeof(PartInfo)); 186 strncpy(ret->mountpoint, mpoint, FILENAME_MAX); 187 strcpy(ret->newfs_cmd, "newfs"); 188 ret->newfs = newfs; 189 return ret; 190} 191 192/* Get the mountpoint for a partition and save it away */ 193PartInfo * 194get_mountpoint(struct chunk *old) 195{ 196 char *val; 197 PartInfo *tmp; 198 199 val = msgGetInput(old && old->private ? ((PartInfo *)old->private)->mountpoint : NULL, 200 "Please specify a mount point for the partition"); 201 if (val) { 202 /* Is it just the same value? */ 203 if (old && old->private && !strcmp(((PartInfo *)old->private)->mountpoint, val)) 204 return NULL; 205 if (check_conflict(val)) { 206 msgConfirm("You already have a mount point for %s assigned!", val); 207 return NULL; 208 } 209 else if (*val != '/') { 210 msgConfirm("Mount point must start with a / character"); 211 return NULL; 212 } 213 else if (!strcmp(val, "/")) { 214 if (old) 215 old->flags |= CHUNK_IS_ROOT; 216 } 217 else if (old) 218 old->flags &= ~CHUNK_IS_ROOT; 219 safe_free(old ? old->private : NULL); 220 tmp = new_part(val, TRUE); 221 if (old) { 222 old->private = tmp; 223 old->private_free = safe_free; 224 } 225 return tmp; 226 } 227 return NULL; 228} 229 230/* Get the type of the new partiton */ 231static PartType 232get_partition_type(void) 233{ 234 char selection[20]; 235 static unsigned char *fs_types[] = { 236 "FS", 237 "A file system", 238 "Swap", 239 "A swap partition.", 240 }; 241 242 if (!dialog_menu("Please choose a partition type", 243 "If you want to use this partition for swap space, select Swap.\nIf you want to put a filesystem on it, choose FS.", -1, -1, 2, 2, fs_types, selection, NULL, NULL)) { 244 if (!strcmp(selection, "FS")) 245 return PART_FILESYSTEM; 246 else if (!strcmp(selection, "Swap")) 247 return PART_SWAP; 248 } 249 return PART_NONE; 250} 251 252/* If the user wants a special newfs command for this, set it */ 253static void 254getNewfsCmd(PartInfo *p) 255{ 256 char *val; 257 258 val = msgGetInput(p->newfs_cmd, 259 "Please enter the newfs command and options you'd like to use in\ncreating this file system."); 260 if (val) 261 strncpy(p->newfs_cmd, val, NEWFS_CMD_MAX); 262} 263 264 265#define MAX_MOUNT_NAME 12 266 267#define PART_PART_COL 0 268#define PART_MOUNT_COL 8 269#define PART_SIZE_COL (PART_MOUNT_COL + MAX_MOUNT_NAME + 3) 270#define PART_NEWFS_COL (PART_SIZE_COL + 7) 271#define PART_OFF 38 272 273/* How many mounted partitions to display in column before going to next */ 274#define CHUNK_COLUMN_MAX 6 275 276/* stick this all up on the screen */ 277static void 278print_label_chunks(void) 279{ 280 int i, j, srow, prow, pcol; 281 int sz; 282 int label_attr; 283 284 clear(); 285 attrset(A_REVERSE); 286 mvaddstr(0, 25, "FreeBSD Disklabel Editor"); 287 attrset(A_NORMAL); 288 label_attr = A_BOLD; /* A_UNDERLINE is *BROKEN* in syscons! */ 289 290 for (i = 0; i < 2; i++) { 291 attrset(label_attr); 292 mvaddstr(CHUNK_PART_START_ROW - 1, PART_PART_COL + (i * PART_OFF), 293 "Part"); 294 attrset(A_NORMAL); 295 296 attrset(label_attr); 297 mvaddstr(CHUNK_PART_START_ROW - 1, PART_MOUNT_COL + (i * PART_OFF), 298 "Mount"); 299 attrset(A_NORMAL); 300 301 attrset(label_attr); 302 mvaddstr(CHUNK_PART_START_ROW - 1, PART_SIZE_COL + (i * PART_OFF) + 2, 303 "Size"); 304 attrset(A_NORMAL); 305 306 attrset(label_attr); 307 mvaddstr(CHUNK_PART_START_ROW - 1, PART_NEWFS_COL + (i * PART_OFF), 308 "Newfs"); 309 attrset(A_NORMAL); 310 } 311 312 srow = CHUNK_SLICE_START_ROW; 313 prow = CHUNK_PART_START_ROW; 314 pcol = 0; 315 316 for (i = 0; label_chunk_info[i].d; i++) { 317 if (i == here) 318 attrset(A_REVERSE); 319 /* Is it a slice entry displayed at the top? */ 320 if (label_chunk_info[i].type == PART_SLICE) { 321 sz = space_free(label_chunk_info[i].c); 322 mvprintw(srow++, 0, 323 "Disk: %s\tPartition name: %s\tFree: %d blocks (%dMB)", 324 label_chunk_info[i].d->name, 325 label_chunk_info[i].c->name, sz, (sz / 2048)); 326 } 327 /* Otherwise it's a DOS, swap or filesystem entry, at the bottom */ 328 else { 329 char onestr[PART_OFF], num[10], *mountpoint, *newfs; 330 331 /* 332 * We copy this into a blank-padded string so that it looks like 333 * a solid bar in reverse-video 334 */ 335 memset(onestr, ' ', PART_OFF - 1); 336 onestr[PART_OFF - 1] = '\0'; 337 /* Go for two columns */ 338 if (prow == (CHUNK_PART_START_ROW + CHUNK_COLUMN_MAX)) { 339 pcol = PART_OFF; 340 prow = CHUNK_PART_START_ROW; 341 } 342 memcpy(onestr + PART_PART_COL, label_chunk_info[i].c->name, 343 strlen(label_chunk_info[i].c->name)); 344 /* If it's a filesystem, display the mountpoint */ 345 if (label_chunk_info[i].type == PART_FILESYSTEM) { 346 if (label_chunk_info[i].c->private == NULL) { 347 static int mnt = 0; 348 char foo[10]; 349 350 /* 351 * Hmm! A partition that must have already been here. 352 * Fill in a fake mountpoint and register it 353 */ 354 sprintf(foo, "/mnt%d", mnt++); 355 label_chunk_info[i].c->private = new_part(foo, FALSE); 356 label_chunk_info[i].c->private_free = safe_free; 357 } 358 mountpoint = ((PartInfo *)label_chunk_info[i].c->private)->mountpoint; 359 newfs = ((PartInfo *)label_chunk_info[i].c->private)->newfs ? "Y" : "N"; 360 } 361 else if (label_chunk_info[i].type == PART_SWAP) { 362 mountpoint = "swap"; 363 newfs = " "; 364 } 365 else if (label_chunk_info[i].type == PART_FAT) { 366 mountpoint = "DOS FAT"; 367 newfs = "*"; 368 } 369 else { 370 mountpoint = "<unknown>"; 371 newfs = "*"; 372 } 373 for (j = 0; j < MAX_MOUNT_NAME && mountpoint[j]; j++) 374 onestr[PART_MOUNT_COL + j] = mountpoint[j]; 375 snprintf(num, 10, "%4ldMB", label_chunk_info[i].c->size ? 376 label_chunk_info[i].c->size / 2048 : 0); 377 memcpy(onestr + PART_SIZE_COL, num, strlen(num)); 378 memcpy(onestr + PART_NEWFS_COL, newfs, strlen(newfs)); 379 onestr[PART_NEWFS_COL + strlen(newfs)] = '\0'; 380 mvaddstr(prow, pcol, onestr); 381 ++prow; 382 } 383 if (i == here) 384 attrset(A_NORMAL); 385 } 386} 387 388static void 389print_command_summary() 390{ 391 mvprintw(17, 0, 392 "The following commands are valid here (upper or lower case):"); 393 mvprintw(19, 0, "C = Create Partition D = Delete Partition M = Mount Partition"); 394 mvprintw(20, 0, "N = Newfs Options T = Toggle Newfs ESC = Exit this screen"); 395 mvprintw(21, 0, "The default target will be displayed in "); 396 397 attrset(A_REVERSE); 398 addstr("reverse video."); 399 attrset(A_NORMAL); 400 mvprintw(22, 0, "Use F1 or ? to get more help, arrow keys to move."); 401 move(0, 0); 402} 403 404int 405diskLabelEditor(char *str) 406{ 407 int sz, key = 0; 408 Boolean labeling; 409 char *msg = NULL; 410 PartInfo *p; 411 PartType type; 412 413 labeling = TRUE; 414 keypad(stdscr, TRUE); 415 record_label_chunks(); 416 417 if (!getenv(DISK_PARTITIONED)) { 418 msgConfirm("You need to partition your disk(s) before you can assign disk labels."); 419 return 0; 420 } 421 while (labeling) { 422 print_label_chunks(); 423 print_command_summary(); 424 if (msg) { 425 attrset(A_REVERSE); mvprintw(23, 0, msg); attrset(A_NORMAL); 426 beep(); 427 msg = NULL; 428 } 429 refresh(); 430 key = toupper(getch()); 431 switch (key) { 432 433 case KEY_UP: 434 case '-': 435 if (here != 0) 436 --here; 437 break; 438 439 case KEY_DOWN: 440 case '+': 441 case '\r': 442 case '\n': 443 if (label_chunk_info[here + 1].d) 444 ++here; 445 break; 446 447 case KEY_HOME: 448 here = 0; 449 break; 450 451 case KEY_END: 452 while (label_chunk_info[here + 1].d) 453 ++here; 454 break; 455 456 case KEY_F(1): 457 case '?': 458 systemDisplayFile("disklabel.hlp"); 459 break; 460 461 case 'C': 462 if (label_chunk_info[here].type != PART_SLICE) { 463 msg = "You can only do this in a master partition (see top of screen)"; 464 break; 465 } 466 sz = space_free(label_chunk_info[here].c); 467 if (sz <= FS_MIN_SIZE) 468 msg = "Not enough space to create additional FreeBSD partition"; 469 else { 470 char *val, *cp, tmp[20]; 471 int size; 472 473 snprintf(tmp, 20, "%d", sz); 474 val = msgGetInput(tmp, "Please specify the size for new FreeBSD partition in blocks, or append\na trailing `M' for megabytes (e.g. 20M)."); 475 if (val && (size = strtol(val, &cp, 0)) > 0) { 476 struct chunk *tmp; 477 u_long flags = 0; 478 479 if (*cp && toupper(*cp) == 'M') 480 size *= 2048; 481 482 type = get_partition_type(); 483 if (type == PART_NONE) 484 break; 485 else if (type == PART_FILESYSTEM) { 486 if ((p = get_mountpoint(NULL)) == NULL) 487 break; 488 else if (!strcmp(p->mountpoint, "/")) 489 flags |= CHUNK_IS_ROOT; 490 else 491 flags &= ~CHUNK_IS_ROOT; 492 } 493 else 494 p = NULL; 495 496 if ((flags & CHUNK_IS_ROOT) && !(label_chunk_info[here].c->flags & CHUNK_BSD_COMPAT)) { 497 msgConfirm("This region cannot be used for your root partition as\nthe FreeBSD boot code cannot deal with a root partition created in\nsuch a location. Please choose another location for your root\npartition and try again!"); 498 break; 499 } 500 tmp = Create_Chunk_DWIM(label_chunk_info[here].d, 501 label_chunk_info[here].c, 502 size, part, 503 (type == PART_SWAP) ? FS_SWAP : FS_BSDFFS, 504 flags); 505 if (!tmp) { 506 msgConfirm("Unable to create the partition. Too big?"); 507 break; 508 } 509 else if ((flags & CHUNK_IS_ROOT) && (tmp->flags & CHUNK_PAST_1024)) { 510 msgConfirm("This region cannot be used for your root partition as it starts\nor extends past the 1024'th cylinder mark and is thus a\npoor location to boot from. Please choose another\nlocation for your root partition and try again!"); 511 Delete_Chunk(label_chunk_info[here].d, tmp); 512 break; 513 } 514 tmp->private = p; 515 tmp->private_free = safe_free; 516 record_label_chunks(); 517 } 518 } 519 break; 520 521 case 'D': /* delete */ 522 if (label_chunk_info[here].type == PART_SLICE) { 523 msg = MSG_NOT_APPLICABLE; 524 break; 525 } 526 else if (label_chunk_info[here].type == PART_FAT) { 527 msg = "Use the Disk Partition Editor to delete this"; 528 break; 529 } 530 Delete_Chunk(label_chunk_info[here].d, label_chunk_info[here].c); 531 record_label_chunks(); 532 break; 533 534 case 'M': /* mount */ 535 switch(label_chunk_info[here].type) { 536 case PART_SLICE: 537 msg = MSG_NOT_APPLICABLE; 538 break; 539 540 case PART_SWAP: 541 msg = "You don't need to specify a mountpoint for a swap partition."; 542 break; 543 544 case PART_FAT: 545 case PART_FILESYSTEM: 546 p = get_mountpoint(label_chunk_info[here].c); 547 if (p) { 548 p->newfs = FALSE; 549 record_label_chunks(); 550 } 551 break; 552 553 default: 554 msgFatal("Bogus partition under cursor???"); 555 break; 556 } 557 break; 558 559 case 'N': /* Set newfs options */ 560 if (label_chunk_info[here].c->private && 561 ((PartInfo *)label_chunk_info[here].c->private)->newfs) 562 getNewfsCmd(label_chunk_info[here].c->private); 563 else 564 msg = MSG_NOT_APPLICABLE; 565 break; 566 567 case 'T': /* Toggle newfs state */ 568 if (label_chunk_info[here].type == PART_FILESYSTEM && 569 label_chunk_info[here].c->private) 570 ((PartInfo *)label_chunk_info[here].c->private)->newfs = 571 !((PartInfo *)label_chunk_info[here].c->private)->newfs; 572 else 573 msg = MSG_NOT_APPLICABLE; 574 break; 575 576 case 'W': 577 if (!msgYesNo("Are you sure you want to go into Wizard mode?\n\nThis is an entirely undocumented feature which you are not\nexpected to understand!")) { 578 int i; 579 Device **devs; 580 581 dialog_clear(); 582 end_dialog(); 583 DialogActive = FALSE; 584 devs = deviceFind(NULL, DEVICE_TYPE_DISK); 585 if (!devs) { 586 msgConfirm("Can't find any disk devicse!"); 587 break; 588 } 589 for (i = 0; ((Disk *)devs[i]->private); i++) { 590 if (devs[i]->enabled) 591 slice_wizard(((Disk *)devs[i]->private)); 592 } 593 dialog_clear(); 594 DialogActive = TRUE; 595 record_label_chunks(); 596 } 597 else 598 msg = "A most prudent choice!"; 599 break; 600 601 case 27: /* ESC */ 602 labeling = FALSE; 603 break; 604 605 default: 606 beep(); 607 msg = "Type F1 or ? for help"; 608 break; 609 } 610 } 611 variable_set2(DISK_LABELLED, "yes"); 612 dialog_clear(); 613 refresh(); 614 return 0; 615} 616 617 618 619