| 1 | /* |
| 2 | * Copyright (c) 2007 The DragonFly Project. All rights reserved. |
| 3 | * |
| 4 | * This code is derived from software contributed to The DragonFly Project |
| 5 | * by Matthew Dillon <dillon@backplane.com> |
| 6 | * |
| 7 | * Redistribution and use in source and binary forms, with or without |
| 8 | * modification, are permitted provided that the following conditions |
| 9 | * are met: |
| 10 | * |
| 11 | * 1. Redistributions of source code must retain the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer. |
| 13 | * 2. Redistributions in binary form must reproduce the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer in |
| 15 | * the documentation and/or other materials provided with the |
| 16 | * distribution. |
| 17 | * 3. Neither the name of The DragonFly Project nor the names of its |
| 18 | * contributors may be used to endorse or promote products derived |
| 19 | * from this software without specific, prior written permission. |
| 20 | * |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 22 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 23 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| 24 | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| 25 | * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 26 | * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| 27 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 28 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
| 29 | * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| 30 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| 31 | * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 32 | * SUCH DAMAGE. |
| 33 | */ |
| 34 | /* |
| 35 | * Copyright (c) 1987, 1993 |
| 36 | * The Regents of the University of California. All rights reserved. |
| 37 | * |
| 38 | * This code is derived from software contributed to Berkeley by |
| 39 | * Symmetric Computer Systems. |
| 40 | * |
| 41 | * Redistribution and use in source and binary forms, with or without |
| 42 | * modification, are permitted provided that the following conditions |
| 43 | * are met: |
| 44 | * 1. Redistributions of source code must retain the above copyright |
| 45 | * notice, this list of conditions and the following disclaimer. |
| 46 | * 2. Redistributions in binary form must reproduce the above copyright |
| 47 | * notice, this list of conditions and the following disclaimer in the |
| 48 | * documentation and/or other materials provided with the distribution. |
| 49 | * 3. Neither the name of the University nor the names of its contributors |
| 50 | * may be used to endorse or promote products derived from this software |
| 51 | * without specific prior written permission. |
| 52 | * |
| 53 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 54 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 55 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 56 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 57 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 58 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 59 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 60 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 61 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 62 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 63 | * SUCH DAMAGE. |
| 64 | * |
| 65 | * @(#)disklabel.c 1.2 (Symmetric) 11/28/85 |
| 66 | * @(#)disklabel.c 8.2 (Berkeley) 1/7/94 |
| 67 | * $FreeBSD: src/sbin/disklabel/disklabel.c,v 1.28.2.15 2003/01/24 16:18:16 des Exp $ |
| 68 | */ |
| 69 | |
| 70 | #include <sys/param.h> |
| 71 | #include <sys/file.h> |
| 72 | #include <sys/stat.h> |
| 73 | #include <sys/wait.h> |
| 74 | #define DKTYPENAMES |
| 75 | #include <sys/disklabel64.h> |
| 76 | #include <sys/diskslice.h> |
| 77 | #include <sys/diskmbr.h> |
| 78 | #include <sys/dtype.h> |
| 79 | #include <sys/sysctl.h> |
| 80 | #include <disktab.h> |
| 81 | #include <fstab.h> |
| 82 | |
| 83 | #include <vfs/ufs/dinode.h> |
| 84 | #include <vfs/ufs/fs.h> |
| 85 | |
| 86 | #include <unistd.h> |
| 87 | #include <string.h> |
| 88 | #include <stdio.h> |
| 89 | #include <stdlib.h> |
| 90 | #include <signal.h> |
| 91 | #include <stdarg.h> |
| 92 | #include <stddef.h> |
| 93 | #include <ctype.h> |
| 94 | #include <err.h> |
| 95 | #include <errno.h> |
| 96 | #include <uuid.h> |
| 97 | #include "pathnames.h" |
| 98 | |
| 99 | extern uint32_t crc32(const void *buf, size_t size); |
| 100 | |
| 101 | static void makelabel(const char *, const char *, struct disklabel64 *); |
| 102 | static int writelabel(int, struct disklabel64 *); |
| 103 | static void l_perror(const char *); |
| 104 | static void display(FILE *, const struct disklabel64 *); |
| 105 | static int edit(struct disklabel64 *, int); |
| 106 | static int editit(void); |
| 107 | static char *skip(char *); |
| 108 | static char *word(char *); |
| 109 | static int parse_field_val(char **, char **, u_int64_t *, int); |
| 110 | static int getasciilabel(FILE *, struct disklabel64 *); |
| 111 | static int getasciipartspec(char *, struct disklabel64 *, int, int, uint32_t); |
| 112 | static int getasciipartuuid(char *, struct disklabel64 *, int, int, uint32_t); |
| 113 | static int checklabel(struct disklabel64 *); |
| 114 | static void Warning(const char *, ...) __printflike(1, 2); |
| 115 | static void usage(void); |
| 116 | static struct disklabel64 *getvirginlabel(void); |
| 117 | static struct disklabel64 *readlabel(int); |
| 118 | static struct disklabel64 *makebootarea(int); |
| 119 | |
| 120 | #define DEFEDITOR _PATH_VI |
| 121 | #define streq(a,b) (strcmp(a,b) == 0) |
| 122 | |
| 123 | static char *dkname; |
| 124 | static char *specname; |
| 125 | static char tmpfil[] = PATH_TMPFILE; |
| 126 | |
| 127 | static struct disklabel64 lab; |
| 128 | |
| 129 | #define MAX_PART ('z') |
| 130 | #define MAX_NUM_PARTS (1 + MAX_PART - 'a') |
| 131 | static char part_size_type[MAX_NUM_PARTS]; |
| 132 | static char part_offset_type[MAX_NUM_PARTS]; |
| 133 | static int part_set[MAX_NUM_PARTS]; |
| 134 | |
| 135 | static int installboot; /* non-zero if we should install a boot program */ |
| 136 | static int boot1size; |
| 137 | static int boot1lsize; |
| 138 | static int boot2size; |
| 139 | static char *boot1buf; |
| 140 | static char *boot2buf; |
| 141 | static char *boot1path; |
| 142 | static char *boot2path; |
| 143 | |
| 144 | static enum { |
| 145 | UNSPEC, EDIT, NOWRITE, READ, RESTORE, WRITE, WRITEABLE, WRITEBOOT |
| 146 | } op = UNSPEC; |
| 147 | |
| 148 | static int rflag; |
| 149 | static int Vflag; |
| 150 | static int disable_write; /* set to disable writing to disk label */ |
| 151 | |
| 152 | #ifdef DEBUG |
| 153 | static int debug; |
| 154 | #define OPTIONS "BNRWb:denrs:Vw" |
| 155 | #else |
| 156 | #define OPTIONS "BNRWb:enrs:Vw" |
| 157 | #endif |
| 158 | |
| 159 | int |
| 160 | main(int argc, char *argv[]) |
| 161 | { |
| 162 | struct disklabel64 *lp; |
| 163 | FILE *t; |
| 164 | int ch, f = 0, flag, error = 0; |
| 165 | const char *name = NULL; |
| 166 | const char *dtype = NULL; |
| 167 | |
| 168 | while ((ch = getopt(argc, argv, OPTIONS)) != -1) |
| 169 | switch (ch) { |
| 170 | case 'B': |
| 171 | ++installboot; |
| 172 | break; |
| 173 | case 'b': |
| 174 | boot1path = optarg; |
| 175 | break; |
| 176 | |
| 177 | case 's': |
| 178 | boot2path = optarg; |
| 179 | break; |
| 180 | case 'N': |
| 181 | if (op != UNSPEC) |
| 182 | usage(); |
| 183 | op = NOWRITE; |
| 184 | break; |
| 185 | case 'n': |
| 186 | disable_write = 1; |
| 187 | break; |
| 188 | case 'R': |
| 189 | if (op != UNSPEC) |
| 190 | usage(); |
| 191 | op = RESTORE; |
| 192 | break; |
| 193 | case 'W': |
| 194 | if (op != UNSPEC) |
| 195 | usage(); |
| 196 | op = WRITEABLE; |
| 197 | break; |
| 198 | case 'e': |
| 199 | if (op != UNSPEC) |
| 200 | usage(); |
| 201 | op = EDIT; |
| 202 | break; |
| 203 | case 'V': |
| 204 | ++Vflag; |
| 205 | break; |
| 206 | case 'r': |
| 207 | ++rflag; |
| 208 | break; |
| 209 | case 'w': |
| 210 | if (op != UNSPEC) |
| 211 | usage(); |
| 212 | op = WRITE; |
| 213 | break; |
| 214 | #ifdef DEBUG |
| 215 | case 'd': |
| 216 | debug++; |
| 217 | break; |
| 218 | #endif |
| 219 | case '?': |
| 220 | default: |
| 221 | usage(); |
| 222 | } |
| 223 | argc -= optind; |
| 224 | argv += optind; |
| 225 | if (installboot) { |
| 226 | rflag++; |
| 227 | if (op == UNSPEC) |
| 228 | op = WRITEBOOT; |
| 229 | } else { |
| 230 | if (op == UNSPEC) |
| 231 | op = READ; |
| 232 | boot1path = NULL; |
| 233 | boot2path = NULL; |
| 234 | } |
| 235 | if (argc < 1) |
| 236 | usage(); |
| 237 | |
| 238 | dkname = getdevpath(argv[0], 0); |
| 239 | specname = dkname; |
| 240 | f = open(specname, op == READ ? O_RDONLY : O_RDWR); |
| 241 | if (f < 0) |
| 242 | err(4, "%s", specname); |
| 243 | |
| 244 | switch(op) { |
| 245 | |
| 246 | case UNSPEC: |
| 247 | break; |
| 248 | |
| 249 | case EDIT: |
| 250 | if (argc != 1) |
| 251 | usage(); |
| 252 | lp = readlabel(f); |
| 253 | error = edit(lp, f); |
| 254 | break; |
| 255 | |
| 256 | case NOWRITE: |
| 257 | flag = 0; |
| 258 | if (ioctl(f, DIOCWLABEL, (char *)&flag) < 0) |
| 259 | err(4, "ioctl DIOCWLABEL"); |
| 260 | break; |
| 261 | |
| 262 | case READ: |
| 263 | if (argc != 1) |
| 264 | usage(); |
| 265 | lp = readlabel(f); |
| 266 | display(stdout, lp); |
| 267 | error = checklabel(lp); |
| 268 | break; |
| 269 | |
| 270 | case RESTORE: |
| 271 | if (installboot && argc == 3) { |
| 272 | makelabel(argv[2], 0, &lab); |
| 273 | argc--; |
| 274 | |
| 275 | /* |
| 276 | * We only called makelabel() for its side effect |
| 277 | * of setting the bootstrap file names. Discard |
| 278 | * all changes to `lab' so that all values in the |
| 279 | * final label come from the ASCII label. |
| 280 | */ |
| 281 | bzero((char *)&lab, sizeof(lab)); |
| 282 | } |
| 283 | if (argc != 2) |
| 284 | usage(); |
| 285 | if (!(t = fopen(argv[1], "r"))) |
| 286 | err(4, "%s", argv[1]); |
| 287 | if (!getasciilabel(t, &lab)) |
| 288 | exit(1); |
| 289 | lp = makebootarea(f); |
| 290 | bcopy(&lab.d_magic, &lp->d_magic, |
| 291 | sizeof(lab) - offsetof(struct disklabel64, d_magic)); |
| 292 | error = writelabel(f, lp); |
| 293 | break; |
| 294 | |
| 295 | case WRITE: |
| 296 | if (argc == 3) { |
| 297 | name = argv[2]; |
| 298 | argc--; |
| 299 | } |
| 300 | if (argc == 2) |
| 301 | dtype = argv[1]; |
| 302 | else if (argc == 1) |
| 303 | dtype = "auto"; |
| 304 | else |
| 305 | usage(); |
| 306 | makelabel(dtype, name, &lab); |
| 307 | lp = makebootarea(f); |
| 308 | bcopy(&lab.d_magic, &lp->d_magic, |
| 309 | sizeof(lab) - offsetof(struct disklabel64, d_magic)); |
| 310 | if (checklabel(lp) == 0) |
| 311 | error = writelabel(f, lp); |
| 312 | break; |
| 313 | |
| 314 | case WRITEABLE: |
| 315 | flag = 1; |
| 316 | if (ioctl(f, DIOCWLABEL, (char *)&flag) < 0) |
| 317 | err(4, "ioctl DIOCWLABEL"); |
| 318 | break; |
| 319 | |
| 320 | case WRITEBOOT: |
| 321 | { |
| 322 | struct disklabel64 tlab; |
| 323 | |
| 324 | lp = readlabel(f); |
| 325 | tlab = *lp; |
| 326 | if (argc == 2) |
| 327 | makelabel(argv[1], 0, &lab); |
| 328 | lp = makebootarea(f); |
| 329 | bcopy(&tlab.d_magic, &lp->d_magic, |
| 330 | sizeof(tlab) - offsetof(struct disklabel64, d_magic)); |
| 331 | if (checklabel(lp) == 0) |
| 332 | error = writelabel(f, lp); |
| 333 | break; |
| 334 | } |
| 335 | } |
| 336 | exit(error); |
| 337 | } |
| 338 | |
| 339 | /* |
| 340 | * Construct a prototype disklabel from /etc/disktab. As a side |
| 341 | * effect, set the names of the primary and secondary boot files |
| 342 | * if specified. |
| 343 | */ |
| 344 | static void |
| 345 | makelabel(const char *type, const char *name, struct disklabel64 *lp) |
| 346 | { |
| 347 | struct disklabel64 *dp; |
| 348 | |
| 349 | if (streq(type, "auto")) |
| 350 | dp = getvirginlabel(); |
| 351 | else |
| 352 | errx(1, "no disktab(5) support yet; only 'auto' allowed"); |
| 353 | *lp = *dp; |
| 354 | |
| 355 | if (name) |
| 356 | strlcpy((char *)lp->d_packname, name, sizeof(lp->d_packname)); |
| 357 | } |
| 358 | |
| 359 | static int |
| 360 | writelabel(int f, struct disklabel64 *lp) |
| 361 | { |
| 362 | struct disklabel64 *blp; |
| 363 | int flag; |
| 364 | int r; |
| 365 | size_t lpsize; |
| 366 | size_t lpcrcsize; |
| 367 | |
| 368 | lpsize = offsetof(struct disklabel64, d_partitions[lp->d_npartitions]); |
| 369 | lpcrcsize = lpsize - offsetof(struct disklabel64, d_magic); |
| 370 | |
| 371 | if (disable_write) { |
| 372 | Warning("write to disk label suppressed - label was as follows:"); |
| 373 | display(stdout, lp); |
| 374 | return (0); |
| 375 | } else { |
| 376 | lp->d_magic = DISKMAGIC64; |
| 377 | lp->d_crc = 0; |
| 378 | lp->d_crc = crc32(&lp->d_magic, lpcrcsize); |
| 379 | if (rflag) { |
| 380 | /* |
| 381 | * Make sure the boot area is not too large |
| 382 | */ |
| 383 | if (boot2buf) { |
| 384 | int lpbsize = (int)(lp->d_pbase - lp->d_bbase); |
| 385 | if (lp->d_pbase == 0) { |
| 386 | errx(1, "no space was set aside in " |
| 387 | "the disklabel for boot2!"); |
| 388 | } |
| 389 | if (boot2size > lpbsize) { |
| 390 | errx(1, "label did not reserve enough " |
| 391 | "space for boot! %d/%d", |
| 392 | boot2size, lpbsize); |
| 393 | } |
| 394 | } |
| 395 | |
| 396 | /* |
| 397 | * First set the kernel disk label, |
| 398 | * then write a label to the raw disk. |
| 399 | * If the SDINFO ioctl fails because it is |
| 400 | * unimplemented, keep going; otherwise, the kernel |
| 401 | * consistency checks may prevent us from changing |
| 402 | * the current (in-core) label. |
| 403 | */ |
| 404 | if (ioctl(f, DIOCSDINFO64, lp) < 0 && |
| 405 | errno != ENODEV && errno != ENOTTY) { |
| 406 | l_perror("ioctl DIOCSDINFO"); |
| 407 | return (1); |
| 408 | } |
| 409 | lseek(f, (off_t)0, SEEK_SET); |
| 410 | |
| 411 | /* |
| 412 | * The disklabel embeds areas which we may not |
| 413 | * have wanted to change. Merge those areas in |
| 414 | * from disk. |
| 415 | */ |
| 416 | blp = makebootarea(f); |
| 417 | if (blp != lp) { |
| 418 | bcopy(&lp->d_magic, &blp->d_magic, |
| 419 | sizeof(*lp) - |
| 420 | offsetof(struct disklabel64, d_magic)); |
| 421 | } |
| 422 | |
| 423 | /* |
| 424 | * write enable label sector before write |
| 425 | * (if necessary), disable after writing. |
| 426 | */ |
| 427 | flag = 1; |
| 428 | if (ioctl(f, DIOCWLABEL, &flag) < 0) |
| 429 | warn("ioctl DIOCWLABEL"); |
| 430 | |
| 431 | r = write(f, boot1buf, boot1lsize); |
| 432 | if (r != (ssize_t)boot1lsize) { |
| 433 | warn("write"); |
| 434 | return (1); |
| 435 | } |
| 436 | /* |
| 437 | * Output the remainder of the disklabel |
| 438 | */ |
| 439 | if (boot2buf) { |
| 440 | lseek(f, lp->d_bbase, 0); |
| 441 | r = write(f, boot2buf, boot2size); |
| 442 | if (r != boot2size) { |
| 443 | warn("write"); |
| 444 | return(1); |
| 445 | } |
| 446 | } |
| 447 | flag = 0; |
| 448 | ioctl(f, DIOCWLABEL, &flag); |
| 449 | } else if (ioctl(f, DIOCWDINFO64, lp) < 0) { |
| 450 | l_perror("ioctl DIOCWDINFO64"); |
| 451 | return (1); |
| 452 | } |
| 453 | } |
| 454 | return (0); |
| 455 | } |
| 456 | |
| 457 | static void |
| 458 | l_perror(const char *s) |
| 459 | { |
| 460 | switch (errno) { |
| 461 | |
| 462 | case ESRCH: |
| 463 | warnx("%s: no disk label on disk;", s); |
| 464 | fprintf(stderr, "add \"-r\" to install initial label\n"); |
| 465 | break; |
| 466 | |
| 467 | case EINVAL: |
| 468 | warnx("%s: label magic number or checksum is wrong!", s); |
| 469 | fprintf(stderr, "(disklabel or kernel is out of date?)\n"); |
| 470 | break; |
| 471 | |
| 472 | case EBUSY: |
| 473 | warnx("%s: open partition would move or shrink", s); |
| 474 | break; |
| 475 | |
| 476 | case ENOATTR: |
| 477 | warnx("%s: the disk already has a label of a different type,\n" |
| 478 | "probably a 32 bit disklabel. It must be cleaned out " |
| 479 | "first.\n", s); |
| 480 | break; |
| 481 | |
| 482 | default: |
| 483 | warn(NULL); |
| 484 | break; |
| 485 | } |
| 486 | } |
| 487 | |
| 488 | /* |
| 489 | * Fetch disklabel for disk. |
| 490 | * Use ioctl to get label unless -r flag is given. |
| 491 | */ |
| 492 | static struct disklabel64 * |
| 493 | readlabel(int f) |
| 494 | { |
| 495 | struct disklabel64 *lp; |
| 496 | u_int32_t savecrc; |
| 497 | size_t lpcrcsize; |
| 498 | |
| 499 | if (rflag) { |
| 500 | /* |
| 501 | * Allocate space for the label. The boot1 code, if any, |
| 502 | * is embedded in the label. The label overlaps the boot1 |
| 503 | * code. |
| 504 | */ |
| 505 | lp = makebootarea(f); |
| 506 | lpcrcsize = offsetof(struct disklabel64, |
| 507 | d_partitions[lp->d_npartitions]) - |
| 508 | offsetof(struct disklabel64, d_magic); |
| 509 | savecrc = lp->d_crc; |
| 510 | lp->d_crc = 0; |
| 511 | if (lp->d_magic != DISKMAGIC64) |
| 512 | errx(1, "bad pack magic number"); |
| 513 | if (lp->d_npartitions > MAXPARTITIONS64 || |
| 514 | savecrc != crc32(&lp->d_magic, lpcrcsize) |
| 515 | ) { |
| 516 | errx(1, "corrupted disklabel64"); |
| 517 | } |
| 518 | lp->d_crc = savecrc; |
| 519 | } else { |
| 520 | /* |
| 521 | * Just use a static structure to hold the label. Note |
| 522 | * that DIOCSDINFO64 does not overwrite the boot1 area |
| 523 | * even though it is part of the disklabel64 structure. |
| 524 | */ |
| 525 | lp = &lab; |
| 526 | if (Vflag) { |
| 527 | if (ioctl(f, DIOCGDVIRGIN64, lp) < 0) { |
| 528 | l_perror("ioctl DIOCGDVIRGIN64"); |
| 529 | exit(4); |
| 530 | } |
| 531 | } else { |
| 532 | if (ioctl(f, DIOCGDINFO64, lp) < 0) { |
| 533 | l_perror("ioctl DIOCGDINFO64"); |
| 534 | exit(4); |
| 535 | } |
| 536 | } |
| 537 | } |
| 538 | return (lp); |
| 539 | } |
| 540 | |
| 541 | /* |
| 542 | * Construct a boot area for boot1 and boot2 and return the location of |
| 543 | * the label within the area. The caller will overwrite the label so |
| 544 | * we don't actually have to read it. |
| 545 | */ |
| 546 | static struct disklabel64 * |
| 547 | makebootarea(int f) |
| 548 | { |
| 549 | struct disklabel64 *lp; |
| 550 | struct partinfo info; |
| 551 | u_int32_t secsize; |
| 552 | struct stat st; |
| 553 | int fd; |
| 554 | int r; |
| 555 | |
| 556 | if (ioctl(f, DIOCGPART, &info) == 0) |
| 557 | secsize = info.media_blksize; |
| 558 | else |
| 559 | secsize = 512; |
| 560 | |
| 561 | if (boot1buf == NULL) { |
| 562 | size_t rsize; |
| 563 | |
| 564 | rsize = roundup2(sizeof(struct disklabel64), secsize); |
| 565 | boot1size = offsetof(struct disklabel64, d_magic); |
| 566 | boot1lsize = rsize; |
| 567 | boot1buf = malloc(rsize); |
| 568 | bzero(boot1buf, rsize); |
| 569 | r = read(f, boot1buf, rsize); |
| 570 | if (r != (int)rsize) { |
| 571 | free(boot1buf); |
| 572 | err(4, "%s", specname); |
| 573 | } |
| 574 | } |
| 575 | lp = (void *)boot1buf; |
| 576 | |
| 577 | if (installboot == 0) |
| 578 | return(lp); |
| 579 | |
| 580 | if (boot2buf == NULL) { |
| 581 | boot2size = BOOT2SIZE64; |
| 582 | boot2buf = malloc(boot2size); |
| 583 | bzero(boot2buf, boot2size); |
| 584 | } |
| 585 | |
| 586 | /* |
| 587 | * If installing the boot code, read it into the appropriate portions |
| 588 | * of the buffer(s) |
| 589 | */ |
| 590 | if (boot1path == NULL) |
| 591 | asprintf(&boot1path, "%s/boot1_64", _PATH_BOOTDIR); |
| 592 | if (boot2path == NULL) |
| 593 | asprintf(&boot2path, "%s/boot2_64", _PATH_BOOTDIR); |
| 594 | |
| 595 | if ((fd = open(boot1path, O_RDONLY)) < 0) |
| 596 | err(4, "%s", boot1path); |
| 597 | if (fstat(fd, &st) < 0) |
| 598 | err(4, "%s", boot1path); |
| 599 | if (st.st_size > boot1size) |
| 600 | err(4, "%s must be exactly %d bytes!", boot1path, boot1size); |
| 601 | if (read(fd, boot1buf, boot1size) != boot1size) |
| 602 | err(4, "%s must be exactly %d bytes!", boot1path, boot1size); |
| 603 | close(fd); |
| 604 | |
| 605 | if ((fd = open(boot2path, O_RDONLY)) < 0) |
| 606 | err(4, "%s", boot2path); |
| 607 | if (fstat(fd, &st) < 0) |
| 608 | err(4, "%s", boot2path); |
| 609 | if (st.st_size > boot2size) |
| 610 | err(4, "%s must be <= %d bytes!", boot2path, boot2size); |
| 611 | if ((r = read(fd, boot2buf, boot2size)) < 1) |
| 612 | err(4, "%s is empty!", boot2path); |
| 613 | boot2size = roundup2(r, secsize); |
| 614 | close(fd); |
| 615 | |
| 616 | /* |
| 617 | * XXX dangerously dedicated support goes here XXX |
| 618 | */ |
| 619 | return (lp); |
| 620 | } |
| 621 | |
| 622 | static void |
| 623 | display(FILE *f, const struct disklabel64 *lp) |
| 624 | { |
| 625 | const struct partition64 *pp; |
| 626 | char *str; |
| 627 | unsigned int part; |
| 628 | int didany; |
| 629 | uint32_t blksize; |
| 630 | |
| 631 | /* |
| 632 | * Use a human readable block size if possible. This is for |
| 633 | * display and editing purposes only. |
| 634 | */ |
| 635 | if (lp->d_align > 1024) |
| 636 | blksize = 1024; |
| 637 | else |
| 638 | blksize = lp->d_align; |
| 639 | |
| 640 | fprintf(f, "# %s:\n", specname); |
| 641 | fprintf(f, "#\n"); |
| 642 | fprintf(f, "# Calculated informational fields for the slice:\n"); |
| 643 | fprintf(f, "#\n"); |
| 644 | fprintf(f, "# boot space: %10ju bytes\n", |
| 645 | (uintmax_t)(lp->d_pbase - lp->d_bbase)); |
| 646 | fprintf(f, "# data space: %10ju blocks\t# %6.2f MB (%ju bytes)\n", |
| 647 | (uintmax_t)(lp->d_pstop - lp->d_pbase) / blksize, |
| 648 | (double)(lp->d_pstop - lp->d_pbase) / 1024.0 / 1024.0, |
| 649 | (uintmax_t)(lp->d_pstop - lp->d_pbase)); |
| 650 | fprintf(f, "#\n"); |
| 651 | fprintf(f, "# NOTE: The partition data base and stop are physically\n"); |
| 652 | fprintf(f, "# aligned instead of slice-relative aligned.\n"); |
| 653 | fprintf(f, "#\n"); |
| 654 | fprintf(f, "# All byte equivalent offsets must be aligned.\n"); |
| 655 | fprintf(f, "#\n"); |
| 656 | |
| 657 | uuid_to_string(&lp->d_stor_uuid, &str, NULL); |
| 658 | fprintf(f, "diskid: %s\n", str ? str : "<unknown>"); |
| 659 | free(str); |
| 660 | |
| 661 | fprintf(f, "label: %s\n", lp->d_packname); |
| 662 | fprintf(f, "boot2 data base: 0x%012jx\n", (uintmax_t)lp->d_bbase); |
| 663 | fprintf(f, "partitions data base: 0x%012jx\n", (uintmax_t)lp->d_pbase); |
| 664 | fprintf(f, "partitions data stop: 0x%012jx\n", (uintmax_t)lp->d_pstop); |
| 665 | fprintf(f, "backup label: 0x%012jx\n", (uintmax_t)lp->d_abase); |
| 666 | fprintf(f, "total size: 0x%012jx\t# %6.2f MB\n", |
| 667 | (uintmax_t)lp->d_total_size, |
| 668 | (double)lp->d_total_size / 1024.0 / 1024.0); |
| 669 | fprintf(f, "alignment: %u\n", lp->d_align); |
| 670 | fprintf(f, "display block size: %u\t# for partition display and edit only\n", |
| 671 | blksize); |
| 672 | |
| 673 | fprintf(f, "\n"); |
| 674 | fprintf(f, "%u partitions:\n", lp->d_npartitions); |
| 675 | fprintf(f, "# size offset fstype fsuuid\n"); |
| 676 | didany = 0; |
| 677 | for (part = 0; part < lp->d_npartitions; part++) { |
| 678 | pp = &lp->d_partitions[part]; |
| 679 | const u_long onemeg = 1024 * 1024; |
| 680 | |
| 681 | if (pp->p_bsize == 0) |
| 682 | continue; |
| 683 | didany = 1; |
| 684 | fprintf(f, " %c: ", 'a' + part); |
| 685 | |
| 686 | if (pp->p_bsize % lp->d_align) |
| 687 | fprintf(f, "%10s ", "ILLEGAL"); |
| 688 | else |
| 689 | fprintf(f, "%10ju ", (uintmax_t)pp->p_bsize / blksize); |
| 690 | |
| 691 | if ((pp->p_boffset - lp->d_pbase) % lp->d_align) |
| 692 | fprintf(f, "%10s ", "ILLEGAL"); |
| 693 | else |
| 694 | fprintf(f, "%10ju ", |
| 695 | (uintmax_t)(pp->p_boffset - lp->d_pbase) / blksize); |
| 696 | |
| 697 | if (pp->p_fstype < FSMAXTYPES) |
| 698 | fprintf(f, "%8.8s", fstypenames[pp->p_fstype]); |
| 699 | else |
| 700 | fprintf(f, "%8d", pp->p_fstype); |
| 701 | fprintf(f, "\t# %11.3fMB", (double)pp->p_bsize / onemeg); |
| 702 | fprintf(f, "\n"); |
| 703 | } |
| 704 | for (part = 0; part < lp->d_npartitions; part++) { |
| 705 | pp = &lp->d_partitions[part]; |
| 706 | |
| 707 | if (pp->p_bsize == 0) |
| 708 | continue; |
| 709 | |
| 710 | if (uuid_is_nil(&lp->d_stor_uuid, NULL) == 0) { |
| 711 | fprintf(f, " %c-stor_uuid: ", 'a' + part); |
| 712 | str = NULL; |
| 713 | uuid_to_string(&pp->p_stor_uuid, &str, NULL); |
| 714 | if (str) { |
| 715 | fprintf(f, "%s", str); |
| 716 | free(str); |
| 717 | } |
| 718 | fprintf(f, "\n"); |
| 719 | } |
| 720 | } |
| 721 | if (didany == 0) { |
| 722 | fprintf(f, "# EXAMPLE\n"); |
| 723 | fprintf(f, "#a: 4g 0 4.2BSD\n"); |
| 724 | fprintf(f, "#a: * * 4.2BSD\n"); |
| 725 | |
| 726 | } |
| 727 | fflush(f); |
| 728 | } |
| 729 | |
| 730 | static int |
| 731 | edit(struct disklabel64 *lp, int f) |
| 732 | { |
| 733 | int c, fd; |
| 734 | struct disklabel64 label; |
| 735 | FILE *fp; |
| 736 | |
| 737 | if ((fd = mkstemp(tmpfil)) == -1 || |
| 738 | (fp = fdopen(fd, "w")) == NULL) { |
| 739 | warnx("can't create %s", tmpfil); |
| 740 | return (1); |
| 741 | } |
| 742 | display(fp, lp); |
| 743 | fclose(fp); |
| 744 | for (;;) { |
| 745 | if (!editit()) |
| 746 | break; |
| 747 | fp = fopen(tmpfil, "r"); |
| 748 | if (fp == NULL) { |
| 749 | warnx("can't reopen %s for reading", tmpfil); |
| 750 | break; |
| 751 | } |
| 752 | bzero((char *)&label, sizeof(label)); |
| 753 | if (getasciilabel(fp, &label)) { |
| 754 | *lp = label; |
| 755 | if (writelabel(f, lp) == 0) { |
| 756 | fclose(fp); |
| 757 | unlink(tmpfil); |
| 758 | return (0); |
| 759 | } |
| 760 | } |
| 761 | fclose(fp); |
| 762 | printf("re-edit the label? [y]: "); fflush(stdout); |
| 763 | c = getchar(); |
| 764 | if (c != EOF && c != (int)'\n') |
| 765 | while (getchar() != (int)'\n') |
| 766 | ; |
| 767 | if (c == (int)'n') |
| 768 | break; |
| 769 | } |
| 770 | unlink(tmpfil); |
| 771 | return (1); |
| 772 | } |
| 773 | |
| 774 | static int |
| 775 | editit(void) |
| 776 | { |
| 777 | int pid, xpid; |
| 778 | int status, omask; |
| 779 | const char *ed; |
| 780 | |
| 781 | omask = sigblock(sigmask(SIGINT)|sigmask(SIGQUIT)|sigmask(SIGHUP)); |
| 782 | while ((pid = fork()) < 0) { |
| 783 | if (errno == EPROCLIM) { |
| 784 | warnx("you have too many processes"); |
| 785 | return(0); |
| 786 | } |
| 787 | if (errno != EAGAIN) { |
| 788 | warn("fork"); |
| 789 | return(0); |
| 790 | } |
| 791 | sleep(1); |
| 792 | } |
| 793 | if (pid == 0) { |
| 794 | sigsetmask(omask); |
| 795 | setgid(getgid()); |
| 796 | setuid(getuid()); |
| 797 | if ((ed = getenv("EDITOR")) == NULL) |
| 798 | ed = DEFEDITOR; |
| 799 | execlp(ed, ed, tmpfil, NULL); |
| 800 | err(1, "%s", ed); |
| 801 | } |
| 802 | while ((xpid = wait(&status)) >= 0) |
| 803 | if (xpid == pid) |
| 804 | break; |
| 805 | sigsetmask(omask); |
| 806 | return(!status); |
| 807 | } |
| 808 | |
| 809 | static char * |
| 810 | skip(char *cp) |
| 811 | { |
| 812 | |
| 813 | while (*cp != '\0' && isspace(*cp)) |
| 814 | cp++; |
| 815 | if (*cp == '\0' || *cp == '#') |
| 816 | return (NULL); |
| 817 | return (cp); |
| 818 | } |
| 819 | |
| 820 | static char * |
| 821 | word(char *cp) |
| 822 | { |
| 823 | char c; |
| 824 | |
| 825 | while (*cp != '\0' && !isspace(*cp) && *cp != '#') |
| 826 | cp++; |
| 827 | if ((c = *cp) != '\0') { |
| 828 | *cp++ = '\0'; |
| 829 | if (c != '#') |
| 830 | return (skip(cp)); |
| 831 | } |
| 832 | return (NULL); |
| 833 | } |
| 834 | |
| 835 | /* |
| 836 | * Read an ascii label in from fd f, |
| 837 | * in the same format as that put out by display(), |
| 838 | * and fill in lp. |
| 839 | */ |
| 840 | static int |
| 841 | getasciilabel(FILE *f, struct disklabel64 *lp) |
| 842 | { |
| 843 | char *cp; |
| 844 | u_int part; |
| 845 | char *tp, line[BUFSIZ]; |
| 846 | u_long v; |
| 847 | uint32_t blksize = 0; |
| 848 | uint64_t vv; |
| 849 | int lineno = 0, errors = 0; |
| 850 | char empty[] = ""; |
| 851 | |
| 852 | bzero(&part_set, sizeof(part_set)); |
| 853 | bzero(&part_size_type, sizeof(part_size_type)); |
| 854 | bzero(&part_offset_type, sizeof(part_offset_type)); |
| 855 | while (fgets(line, sizeof(line) - 1, f)) { |
| 856 | lineno++; |
| 857 | if ((cp = strchr(line,'\n')) != NULL) |
| 858 | *cp = '\0'; |
| 859 | cp = skip(line); |
| 860 | if (cp == NULL) |
| 861 | continue; |
| 862 | tp = strchr(cp, ':'); |
| 863 | if (tp == NULL) { |
| 864 | fprintf(stderr, "line %d: syntax error\n", lineno); |
| 865 | errors++; |
| 866 | continue; |
| 867 | } |
| 868 | *tp++ = '\0', tp = skip(tp); |
| 869 | if (sscanf(cp, "%lu partitions", &v) == 1) { |
| 870 | if (v == 0 || v > MAXPARTITIONS64) { |
| 871 | fprintf(stderr, |
| 872 | "line %d: bad # of partitions\n", lineno); |
| 873 | lp->d_npartitions = MAXPARTITIONS64; |
| 874 | errors++; |
| 875 | } else |
| 876 | lp->d_npartitions = v; |
| 877 | continue; |
| 878 | } |
| 879 | if (tp == NULL) |
| 880 | tp = empty; |
| 881 | |
| 882 | if (streq(cp, "diskid")) { |
| 883 | uint32_t status = 0; |
| 884 | uuid_from_string(tp, &lp->d_stor_uuid, &status); |
| 885 | if (status != uuid_s_ok) { |
| 886 | fprintf(stderr, |
| 887 | "line %d: %s: illegal UUID\n", |
| 888 | lineno, tp); |
| 889 | errors++; |
| 890 | } |
| 891 | continue; |
| 892 | } |
| 893 | if (streq(cp, "label")) { |
| 894 | strlcpy((char *)lp->d_packname, tp, sizeof(lp->d_packname)); |
| 895 | continue; |
| 896 | } |
| 897 | |
| 898 | if (streq(cp, "alignment")) { |
| 899 | v = strtoul(tp, NULL, 0); |
| 900 | if (v <= 0 || (v & DEV_BMASK) != 0 || v > 1024*1024) { |
| 901 | fprintf(stderr, |
| 902 | "line %d: %s: bad alignment\n", |
| 903 | lineno, tp); |
| 904 | errors++; |
| 905 | } else { |
| 906 | lp->d_align = v; |
| 907 | } |
| 908 | continue; |
| 909 | } |
| 910 | if (streq(cp, "total size")) { |
| 911 | vv = strtoull(tp, NULL, 0); |
| 912 | if (vv == 0 || vv == (uint64_t)-1) { |
| 913 | fprintf(stderr, "line %d: %s: bad %s\n", |
| 914 | lineno, tp, cp); |
| 915 | errors++; |
| 916 | } else { |
| 917 | lp->d_total_size = vv; |
| 918 | } |
| 919 | continue; |
| 920 | } |
| 921 | if (streq(cp, "boot2 data base")) { |
| 922 | vv = strtoull(tp, NULL, 0); |
| 923 | if (vv == 0 || vv == (uint64_t)-1) { |
| 924 | fprintf(stderr, "line %d: %s: bad %s\n", |
| 925 | lineno, tp, cp); |
| 926 | errors++; |
| 927 | } else { |
| 928 | lp->d_bbase = vv; |
| 929 | } |
| 930 | continue; |
| 931 | } |
| 932 | if (streq(cp, "partitions data base")) { |
| 933 | vv = strtoull(tp, NULL, 0); |
| 934 | if (vv == 0 || vv == (uint64_t)-1) { |
| 935 | fprintf(stderr, "line %d: %s: bad %s\n", |
| 936 | lineno, tp, cp); |
| 937 | errors++; |
| 938 | } else { |
| 939 | lp->d_pbase = vv; |
| 940 | } |
| 941 | continue; |
| 942 | } |
| 943 | if (streq(cp, "partitions data stop")) { |
| 944 | vv = strtoull(tp, NULL, 0); |
| 945 | if (vv == 0 || vv == (uint64_t)-1) { |
| 946 | fprintf(stderr, "line %d: %s: bad %s\n", |
| 947 | lineno, tp, cp); |
| 948 | errors++; |
| 949 | } else { |
| 950 | lp->d_pstop = vv; |
| 951 | } |
| 952 | continue; |
| 953 | } |
| 954 | if (streq(cp, "backup label")) { |
| 955 | vv = strtoull(tp, NULL, 0); |
| 956 | if (vv == 0 || vv == (uint64_t)-1) { |
| 957 | fprintf(stderr, "line %d: %s: bad %s\n", |
| 958 | lineno, tp, cp); |
| 959 | errors++; |
| 960 | } else { |
| 961 | lp->d_abase = vv; |
| 962 | } |
| 963 | continue; |
| 964 | } |
| 965 | if (streq(cp, "display block size")) { |
| 966 | v = strtoul(tp, NULL, 0); |
| 967 | if (v <= 0 || (v & DEV_BMASK) != 0 || v > 1024*1024) { |
| 968 | fprintf(stderr, "line %d: %s: bad %s\n", |
| 969 | lineno, tp, cp); |
| 970 | errors++; |
| 971 | } else { |
| 972 | blksize = v; |
| 973 | } |
| 974 | continue; |
| 975 | } |
| 976 | |
| 977 | /* the ':' was removed above */ |
| 978 | |
| 979 | /* |
| 980 | * Handle main partition data, e.g. a:, b:, etc. |
| 981 | */ |
| 982 | if (*cp < 'a' || *cp > MAX_PART) { |
| 983 | fprintf(stderr, |
| 984 | "line %d: %s: Unknown disklabel field\n", lineno, |
| 985 | cp); |
| 986 | errors++; |
| 987 | continue; |
| 988 | } |
| 989 | |
| 990 | /* Process a partition specification line. */ |
| 991 | part = *cp - 'a'; |
| 992 | if (part >= lp->d_npartitions) { |
| 993 | fprintf(stderr, |
| 994 | "line %d: partition name out of range a-%c: %s\n", |
| 995 | lineno, 'a' + lp->d_npartitions - 1, cp); |
| 996 | errors++; |
| 997 | continue; |
| 998 | } |
| 999 | |
| 1000 | if (blksize == 0) { |
| 1001 | fprintf(stderr, "block size to use for partition " |
| 1002 | "display was not specified!\n"); |
| 1003 | errors++; |
| 1004 | continue; |
| 1005 | } |
| 1006 | |
| 1007 | if (strcmp(cp + 1, "-stor_uuid") == 0) { |
| 1008 | if (getasciipartuuid(tp, lp, part, lineno, blksize)) { |
| 1009 | errors++; |
| 1010 | break; |
| 1011 | } |
| 1012 | continue; |
| 1013 | } else if (cp[1] == 0) { |
| 1014 | part_set[part] = 1; |
| 1015 | if (getasciipartspec(tp, lp, part, lineno, blksize)) { |
| 1016 | errors++; |
| 1017 | break; |
| 1018 | } |
| 1019 | continue; |
| 1020 | } |
| 1021 | fprintf(stderr, "line %d: %s: Unknown disklabel field\n", |
| 1022 | lineno, cp); |
| 1023 | errors++; |
| 1024 | continue; |
| 1025 | } |
| 1026 | errors += checklabel(lp); |
| 1027 | return (errors == 0); |
| 1028 | } |
| 1029 | |
| 1030 | static int |
| 1031 | parse_field_val(char **tp, char **cp, u_int64_t *vv, int lineno) |
| 1032 | { |
| 1033 | char *tmp; |
| 1034 | |
| 1035 | if (*tp == NULL || **tp == 0) { |
| 1036 | fprintf(stderr, "line %d: too few numeric fields\n", lineno); |
| 1037 | return(-1); |
| 1038 | } |
| 1039 | *cp = *tp; |
| 1040 | *tp = word(*cp); |
| 1041 | *vv = strtoull(*cp, &tmp, 0); |
| 1042 | if (*vv == ULLONG_MAX) { |
| 1043 | fprintf(stderr, "line %d: illegal number\n", lineno); |
| 1044 | return(-1); |
| 1045 | } |
| 1046 | if (tmp) |
| 1047 | return(*tmp); |
| 1048 | else |
| 1049 | return(0); |
| 1050 | } |
| 1051 | |
| 1052 | /* |
| 1053 | * Read a partition line into partition `part' in the specified disklabel. |
| 1054 | * Return 0 on success, 1 on failure. |
| 1055 | */ |
| 1056 | static int |
| 1057 | getasciipartspec(char *tp, struct disklabel64 *lp, int part, |
| 1058 | int lineno, uint32_t blksize) |
| 1059 | { |
| 1060 | struct partition64 *pp; |
| 1061 | char *cp; |
| 1062 | const char **cpp; |
| 1063 | int r; |
| 1064 | u_long v; |
| 1065 | uint64_t vv; |
| 1066 | uint64_t mpx; |
| 1067 | |
| 1068 | pp = &lp->d_partitions[part]; |
| 1069 | cp = NULL; |
| 1070 | |
| 1071 | /* |
| 1072 | * size |
| 1073 | */ |
| 1074 | r = parse_field_val(&tp, &cp, &vv, lineno); |
| 1075 | if (r < 0) |
| 1076 | return (1); |
| 1077 | |
| 1078 | mpx = 1; |
| 1079 | switch(r) { |
| 1080 | case 0: |
| 1081 | mpx = blksize; |
| 1082 | break; |
| 1083 | case '%': |
| 1084 | /* mpx = 1; */ |
| 1085 | break; |
| 1086 | case '*': |
| 1087 | mpx = 0; |
| 1088 | break; |
| 1089 | case 't': |
| 1090 | case 'T': |
| 1091 | mpx *= 1024ULL; |
| 1092 | /* fall through */ |
| 1093 | case 'g': |
| 1094 | case 'G': |
| 1095 | mpx *= 1024ULL; |
| 1096 | /* fall through */ |
| 1097 | case 'm': |
| 1098 | case 'M': |
| 1099 | mpx *= 1024ULL; |
| 1100 | /* fall through */ |
| 1101 | case 'k': |
| 1102 | case 'K': |
| 1103 | mpx *= 1024ULL; |
| 1104 | r = 0; /* eat the suffix */ |
| 1105 | break; |
| 1106 | default: |
| 1107 | Warning("unknown size specifier '%c' (*/%%/K/M/G/T are valid)", |
| 1108 | r); |
| 1109 | return(1); |
| 1110 | } |
| 1111 | |
| 1112 | part_size_type[part] = r; |
| 1113 | if (vv == 0 && r != '*') { |
| 1114 | fprintf(stderr, |
| 1115 | "line %d: %s: bad partition size (0)\n", lineno, cp); |
| 1116 | return (1); |
| 1117 | } |
| 1118 | pp->p_bsize = vv * mpx; |
| 1119 | |
| 1120 | /* |
| 1121 | * offset |
| 1122 | */ |
| 1123 | r = parse_field_val(&tp, &cp, &vv, lineno); |
| 1124 | if (r < 0) |
| 1125 | return (1); |
| 1126 | part_offset_type[part] = r; |
| 1127 | switch(r) { |
| 1128 | case '*': |
| 1129 | pp->p_boffset = 0; |
| 1130 | break; |
| 1131 | case 0: |
| 1132 | pp->p_boffset = vv * blksize + lp->d_pbase; |
| 1133 | break; |
| 1134 | default: |
| 1135 | fprintf(stderr, |
| 1136 | "line %d: %s: bad suffix on partition offset (%c)\n", |
| 1137 | lineno, cp, r); |
| 1138 | return (1); |
| 1139 | } |
| 1140 | |
| 1141 | /* |
| 1142 | * fstype |
| 1143 | */ |
| 1144 | if (tp == NULL) { |
| 1145 | fprintf(stderr, |
| 1146 | "line %d: no filesystem type was specified\n", lineno); |
| 1147 | return(1); |
| 1148 | } |
| 1149 | cp = tp; |
| 1150 | tp = word(cp); |
| 1151 | for (cpp = fstypenames; cpp < &fstypenames[FSMAXTYPES]; cpp++) { |
| 1152 | if (*cpp && strcasecmp(*cpp, cp) == 0) |
| 1153 | break; |
| 1154 | } |
| 1155 | if (*cpp != NULL) { |
| 1156 | pp->p_fstype = cpp - fstypenames; |
| 1157 | } else { |
| 1158 | if (isdigit(*cp)) |
| 1159 | v = strtoul(cp, NULL, 0); |
| 1160 | else |
| 1161 | v = FSMAXTYPES; |
| 1162 | if (v >= FSMAXTYPES) { |
| 1163 | fprintf(stderr, |
| 1164 | "line %d: Warning, unknown filesystem type %s\n", |
| 1165 | lineno, cp); |
| 1166 | v = FS_UNUSED; |
| 1167 | } |
| 1168 | pp->p_fstype = v; |
| 1169 | } |
| 1170 | |
| 1171 | cp = tp; |
| 1172 | if (tp) { |
| 1173 | fprintf(stderr, "line %d: Warning, extra data on line\n", |
| 1174 | lineno); |
| 1175 | } |
| 1176 | return(0); |
| 1177 | } |
| 1178 | |
| 1179 | static int |
| 1180 | getasciipartuuid(char *tp, struct disklabel64 *lp, int part, |
| 1181 | int lineno, uint32_t blksize __unused) |
| 1182 | { |
| 1183 | struct partition64 *pp; |
| 1184 | uint32_t status; |
| 1185 | char *cp; |
| 1186 | |
| 1187 | pp = &lp->d_partitions[part]; |
| 1188 | |
| 1189 | cp = tp; |
| 1190 | tp = word(cp); |
| 1191 | uuid_from_string(cp, &pp->p_stor_uuid, &status); |
| 1192 | if (status != uuid_s_ok) { |
| 1193 | fprintf(stderr, "line %d: Illegal storage uuid specification\n", |
| 1194 | lineno); |
| 1195 | return(1); |
| 1196 | } |
| 1197 | return(0); |
| 1198 | } |
| 1199 | |
| 1200 | /* |
| 1201 | * Check disklabel for errors and fill in |
| 1202 | * derived fields according to supplied values. |
| 1203 | */ |
| 1204 | static int |
| 1205 | checklabel(struct disklabel64 *lp) |
| 1206 | { |
| 1207 | struct partition64 *pp; |
| 1208 | int errors = 0; |
| 1209 | char part; |
| 1210 | u_int64_t total_size; |
| 1211 | u_int64_t current_offset; |
| 1212 | u_long total_percent; |
| 1213 | int seen_default_offset; |
| 1214 | int hog_part; |
| 1215 | int i, j; |
| 1216 | struct partition64 *pp2; |
| 1217 | u_int64_t off; |
| 1218 | |
| 1219 | if (lp->d_align < 512 || |
| 1220 | (lp->d_align ^ (lp->d_align - 1)) != lp->d_align * 2 - 1) { |
| 1221 | Warning("Illegal alignment specified: %u\n", lp->d_align); |
| 1222 | return (1); |
| 1223 | } |
| 1224 | if (lp->d_npartitions > MAXPARTITIONS64) { |
| 1225 | Warning("number of partitions (%u) > MAXPARTITIONS (%d)", |
| 1226 | lp->d_npartitions, MAXPARTITIONS64); |
| 1227 | return (1); |
| 1228 | } |
| 1229 | off = offsetof(struct disklabel64, d_partitions[lp->d_npartitions]); |
| 1230 | off = (off + lp->d_align - 1) & ~(int64_t)(lp->d_align - 1); |
| 1231 | |
| 1232 | if (lp->d_bbase < off || lp->d_bbase % lp->d_align) { |
| 1233 | Warning("illegal boot2 data base "); |
| 1234 | return (1); |
| 1235 | } |
| 1236 | |
| 1237 | /* |
| 1238 | * pbase can be unaligned slice-relative but will be |
| 1239 | * aligned physically. |
| 1240 | */ |
| 1241 | if (lp->d_pbase < lp->d_bbase) { |
| 1242 | Warning("illegal partition data base"); |
| 1243 | return (1); |
| 1244 | } |
| 1245 | if (lp->d_pstop < lp->d_pbase) { |
| 1246 | Warning("illegal partition data stop"); |
| 1247 | return (1); |
| 1248 | } |
| 1249 | if (lp->d_pstop > lp->d_total_size) { |
| 1250 | printf("%012jx\n%012jx\n", |
| 1251 | (uintmax_t)lp->d_pstop, (uintmax_t)lp->d_total_size); |
| 1252 | Warning("disklabel control info is beyond the total size"); |
| 1253 | return (1); |
| 1254 | } |
| 1255 | if (lp->d_abase && |
| 1256 | (lp->d_abase < lp->d_pstop || |
| 1257 | lp->d_abase > lp->d_total_size - off)) { |
| 1258 | Warning("illegal backup label location"); |
| 1259 | return (1); |
| 1260 | } |
| 1261 | |
| 1262 | /* first allocate space to the partitions, then offsets */ |
| 1263 | total_size = 0; /* in bytes */ |
| 1264 | total_percent = 0; /* in percent */ |
| 1265 | hog_part = -1; |
| 1266 | /* find all fixed partitions */ |
| 1267 | for (i = 0; i < (int)lp->d_npartitions; i++) { |
| 1268 | pp = &lp->d_partitions[i]; |
| 1269 | if (part_set[i]) { |
| 1270 | if (part_size_type[i] == '*') { |
| 1271 | if (part_offset_type[i] != '*') { |
| 1272 | if (total_size < pp->p_boffset) |
| 1273 | total_size = pp->p_boffset; |
| 1274 | } |
| 1275 | if (hog_part != -1) { |
| 1276 | Warning("Too many '*' partitions (%c and %c)", |
| 1277 | hog_part + 'a',i + 'a'); |
| 1278 | } else { |
| 1279 | hog_part = i; |
| 1280 | } |
| 1281 | } else { |
| 1282 | off_t size; |
| 1283 | |
| 1284 | size = pp->p_bsize; |
| 1285 | if (part_size_type[i] == '%') { |
| 1286 | /* |
| 1287 | * don't count %'s yet |
| 1288 | */ |
| 1289 | total_percent += size; |
| 1290 | } else { |
| 1291 | /* |
| 1292 | * Value has already been converted |
| 1293 | * to bytes. |
| 1294 | */ |
| 1295 | if (size % lp->d_align != 0) { |
| 1296 | Warning("partition %c's size is not properly aligned", |
| 1297 | i + 'a'); |
| 1298 | } |
| 1299 | total_size += size; |
| 1300 | } |
| 1301 | } |
| 1302 | } |
| 1303 | } |
| 1304 | /* handle % partitions - note %'s don't need to add up to 100! */ |
| 1305 | if (total_percent != 0) { |
| 1306 | int64_t free_space; |
| 1307 | int64_t space_left; |
| 1308 | |
| 1309 | free_space = (int64_t)(lp->d_pstop - lp->d_pbase - total_size); |
| 1310 | free_space &= ~(u_int64_t)(lp->d_align - 1); |
| 1311 | |
| 1312 | space_left = free_space; |
| 1313 | if (total_percent > 100) { |
| 1314 | fprintf(stderr,"total percentage %lu is greater than 100\n", |
| 1315 | total_percent); |
| 1316 | errors++; |
| 1317 | } |
| 1318 | |
| 1319 | if (free_space > 0) { |
| 1320 | for (i = 0; i < (int)lp->d_npartitions; i++) { |
| 1321 | pp = &lp->d_partitions[i]; |
| 1322 | if (part_set[i] && part_size_type[i] == '%') { |
| 1323 | /* careful of overflows! and integer roundoff */ |
| 1324 | pp->p_bsize = ((double)pp->p_bsize/100) * free_space; |
| 1325 | pp->p_bsize = (pp->p_bsize + lp->d_align - 1) & ~(u_int64_t)(lp->d_align - 1); |
| 1326 | if ((int64_t)pp->p_bsize > space_left) |
| 1327 | pp->p_bsize = (u_int64_t)space_left; |
| 1328 | total_size += pp->p_bsize; |
| 1329 | space_left -= pp->p_bsize; |
| 1330 | } |
| 1331 | } |
| 1332 | } else { |
| 1333 | fprintf(stderr, "%jd bytes available to give to " |
| 1334 | "'*' and '%%' partitions\n", |
| 1335 | (intmax_t)free_space); |
| 1336 | errors++; |
| 1337 | /* fix? set all % partitions to size 0? */ |
| 1338 | } |
| 1339 | } |
| 1340 | /* give anything remaining to the hog partition */ |
| 1341 | if (hog_part != -1) { |
| 1342 | off = lp->d_pstop - lp->d_pbase - total_size; |
| 1343 | off &= ~(u_int64_t)(lp->d_align - 1); |
| 1344 | lp->d_partitions[hog_part].p_bsize = off; |
| 1345 | total_size = lp->d_pstop - lp->d_pbase; |
| 1346 | } |
| 1347 | |
| 1348 | /* Now set the offsets for each partition */ |
| 1349 | current_offset = lp->d_pbase; |
| 1350 | seen_default_offset = 0; |
| 1351 | for (i = 0; i < (int)lp->d_npartitions; i++) { |
| 1352 | part = 'a' + i; |
| 1353 | pp = &lp->d_partitions[i]; |
| 1354 | if (pp->p_bsize == 0) |
| 1355 | continue; |
| 1356 | if (part_set[i]) { |
| 1357 | if (part_offset_type[i] == '*') { |
| 1358 | pp->p_boffset = current_offset; |
| 1359 | seen_default_offset = 1; |
| 1360 | } else { |
| 1361 | /* allow them to be out of order for old-style tables */ |
| 1362 | if (pp->p_boffset < current_offset && |
| 1363 | seen_default_offset && |
| 1364 | pp->p_fstype != FS_VINUM) { |
| 1365 | fprintf(stderr, |
| 1366 | "Offset 0x%012jx for partition %c overlaps previous partition which ends at 0x%012jx\n", |
| 1367 | (uintmax_t)pp->p_boffset, |
| 1368 | i + 'a', |
| 1369 | (uintmax_t)current_offset); |
| 1370 | fprintf(stderr, |
| 1371 | "Labels with any *'s for offset must be in ascending order by sector\n"); |
| 1372 | errors++; |
| 1373 | } else if (pp->p_boffset != current_offset && |
| 1374 | seen_default_offset) { |
| 1375 | /* |
| 1376 | * this may give unneeded warnings if |
| 1377 | * partitions are out-of-order |
| 1378 | */ |
| 1379 | Warning( |
| 1380 | "Offset 0x%012jx for partition %c doesn't match expected value 0x%012jx", |
| 1381 | pp->p_boffset, i + 'a', |
| 1382 | (intmax_t)current_offset); |
| 1383 | } |
| 1384 | } |
| 1385 | current_offset = pp->p_boffset + pp->p_bsize; |
| 1386 | } |
| 1387 | } |
| 1388 | |
| 1389 | for (i = 0; i < (int)lp->d_npartitions; i++) { |
| 1390 | part = 'a' + i; |
| 1391 | pp = &lp->d_partitions[i]; |
| 1392 | if (pp->p_bsize == 0 && pp->p_boffset != 0) |
| 1393 | Warning("partition %c: size 0, but offset 0x%012jx", |
| 1394 | part, (intmax_t)pp->p_boffset); |
| 1395 | if (pp->p_bsize == 0) { |
| 1396 | pp->p_boffset = 0; |
| 1397 | continue; |
| 1398 | } |
| 1399 | if (uuid_is_nil(&pp->p_stor_uuid, NULL)) |
| 1400 | uuid_create(&pp->p_stor_uuid, NULL); |
| 1401 | |
| 1402 | if (pp->p_boffset < lp->d_pbase) { |
| 1403 | fprintf(stderr, |
| 1404 | "partition %c: offset out of bounds (%jd)\n", |
| 1405 | part, (intmax_t)(pp->p_boffset - lp->d_pbase)); |
| 1406 | errors++; |
| 1407 | } |
| 1408 | if (pp->p_boffset > lp->d_pstop) { |
| 1409 | fprintf(stderr, |
| 1410 | "partition %c: offset out of bounds (%jd)\n", |
| 1411 | part, (intmax_t)(pp->p_boffset - lp->d_pbase)); |
| 1412 | errors++; |
| 1413 | } |
| 1414 | if (pp->p_boffset + pp->p_bsize > lp->d_pstop) { |
| 1415 | fprintf(stderr, |
| 1416 | "partition %c: size out of bounds (%jd)\n", |
| 1417 | part, (intmax_t)(pp->p_boffset - lp->d_pbase)); |
| 1418 | errors++; |
| 1419 | } |
| 1420 | |
| 1421 | /* check for overlaps */ |
| 1422 | /* this will check for all possible overlaps once and only once */ |
| 1423 | for (j = 0; j < i; j++) { |
| 1424 | pp2 = &lp->d_partitions[j]; |
| 1425 | if (pp->p_fstype != FS_VINUM && |
| 1426 | pp2->p_fstype != FS_VINUM && |
| 1427 | part_set[i] && part_set[j]) { |
| 1428 | if (pp2->p_boffset < pp->p_boffset + pp->p_bsize && |
| 1429 | (pp2->p_boffset + pp2->p_bsize > pp->p_boffset || |
| 1430 | pp2->p_boffset >= pp->p_boffset)) { |
| 1431 | fprintf(stderr,"partitions %c and %c overlap!\n", |
| 1432 | j + 'a', i + 'a'); |
| 1433 | errors++; |
| 1434 | } |
| 1435 | } |
| 1436 | } |
| 1437 | } |
| 1438 | for (; i < (int)lp->d_npartitions; i++) { |
| 1439 | part = 'a' + i; |
| 1440 | pp = &lp->d_partitions[i]; |
| 1441 | if (pp->p_bsize || pp->p_boffset) |
| 1442 | Warning("unused partition %c: size 0x%012jx " |
| 1443 | "offset 0x%012jx", |
| 1444 | 'a' + i, (intmax_t)pp->p_bsize, |
| 1445 | (intmax_t)pp->p_boffset); |
| 1446 | } |
| 1447 | return (errors); |
| 1448 | } |
| 1449 | |
| 1450 | /* |
| 1451 | * When operating on a "virgin" disk, try getting an initial label |
| 1452 | * from the associated device driver. This might work for all device |
| 1453 | * drivers that are able to fetch some initial device parameters |
| 1454 | * without even having access to a (BSD) disklabel, like SCSI disks, |
| 1455 | * most IDE drives, or vn devices. |
| 1456 | * |
| 1457 | * The device name must be given in its "canonical" form. |
| 1458 | */ |
| 1459 | static struct disklabel64 dlab; |
| 1460 | |
| 1461 | static struct disklabel64 * |
| 1462 | getvirginlabel(void) |
| 1463 | { |
| 1464 | struct disklabel64 *dl = &dlab; |
| 1465 | int f; |
| 1466 | |
| 1467 | if ((f = open(dkname, O_RDONLY)) == -1) { |
| 1468 | warn("cannot open %s", dkname); |
| 1469 | return (NULL); |
| 1470 | } |
| 1471 | |
| 1472 | /* |
| 1473 | * Generate a virgin disklabel via ioctl |
| 1474 | */ |
| 1475 | if (ioctl(f, DIOCGDVIRGIN64, dl) < 0) { |
| 1476 | l_perror("ioctl DIOCGDVIRGIN64"); |
| 1477 | close(f); |
| 1478 | return (NULL); |
| 1479 | } |
| 1480 | close(f); |
| 1481 | return (dl); |
| 1482 | } |
| 1483 | |
| 1484 | /*VARARGS1*/ |
| 1485 | static void |
| 1486 | Warning(const char *fmt, ...) |
| 1487 | { |
| 1488 | va_list ap; |
| 1489 | |
| 1490 | fprintf(stderr, "Warning, "); |
| 1491 | va_start(ap, fmt); |
| 1492 | vfprintf(stderr, fmt, ap); |
| 1493 | fprintf(stderr, "\n"); |
| 1494 | va_end(ap); |
| 1495 | } |
| 1496 | |
| 1497 | static void |
| 1498 | usage(void) |
| 1499 | { |
| 1500 | fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n", |
| 1501 | "usage: disklabel64 [-r] disk", |
| 1502 | "\t\t(to read label)", |
| 1503 | " disklabel64 -w [-r] [-n] disk [type [packid]]", |
| 1504 | "\t\t(to write label with existing boot program)", |
| 1505 | " disklabel64 -e [-r] [-n] disk", |
| 1506 | "\t\t(to edit label)", |
| 1507 | " disklabel64 -R [-r] [-n] disk protofile", |
| 1508 | "\t\t(to restore label with existing boot program)", |
| 1509 | " disklabel64 -B [-n] [-b boot1 -s boot2] disk [type]", |
| 1510 | "\t\t(to install boot program with existing label)", |
| 1511 | " disklabel64 -w -B [-n] [-b boot1 -s boot2] disk [type [packid]]", |
| 1512 | "\t\t(to write label and boot program)", |
| 1513 | " disklabel64 -R -B [-n] [-b boot1 -s boot2] disk protofile [type]", |
| 1514 | "\t\t(to restore label and boot program)", |
| 1515 | " disklabel64 [-NW] disk", |
| 1516 | "\t\t(to write disable/enable label)"); |
| 1517 | exit(1); |
| 1518 | } |