1 /* 2 * Copyright (c) 1987, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Symmetric Computer Systems. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 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 the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 #ifndef lint 38 static const char copyright[] = 39 "@(#) Copyright (c) 1987, 1993\n\ 40 The Regents of the University of California. All rights reserved.\n"; 41 #endif /* not lint */ 42 43 #ifndef lint 44 #if 0 45 static char sccsid[] = "@(#)disklabel.c 8.2 (Berkeley) 1/7/94"; 46 /* from static char sccsid[] = "@(#)disklabel.c 1.2 (Symmetric) 11/28/85"; */ 47 #endif 48 static const char rcsid[] = 49 "$FreeBSD$"; 50 #endif /* not lint */ 51 52 #include <sys/param.h> 53 #include <sys/file.h> 54 #include <sys/stat.h> 55 #include <sys/wait.h> 56 #define DKTYPENAMES 57 #include <sys/disklabel.h> 58 #include <ufs/ffs/fs.h> 59 #include <unistd.h> 60 #include <string.h> 61 #include <stdio.h> 62 #include <stdlib.h> 63 #include <signal.h> 64 #include <stdarg.h> 65 #include <ctype.h> 66 #include <err.h> 67 #include <errno.h> 68 #include "pathnames.h" 69 70 /* 71 * Disklabel: read and write disklabels. 72 * The label is usually placed on one of the first sectors of the disk. 73 * Many machines also place a bootstrap in the same area, 74 * in which case the label is embedded in the bootstrap. 75 * The bootstrap source must leave space at the proper offset 76 * for the label on such machines. 77 */ 78 79 #ifndef BBSIZE 80 #define BBSIZE 8192 /* size of boot area, with label */ 81 #endif 82 83 /* FIX! These are too low, but are traditional */ 84 #define DEFAULT_NEWFS_BLOCK 8192U 85 #define DEFAULT_NEWFS_FRAG 1024U 86 #define DEFAULT_NEWFS_CPG 16U 87 88 #define BIG_NEWFS_BLOCK 16384U 89 #define BIG_NEWFS_FRAG 4096U 90 #define BIG_NEWFS_CPG 64U 91 92 #ifdef tahoe 93 #define NUMBOOT 0 94 #else 95 #if defined(__alpha__) || defined(hp300) || defined(hp800) 96 #define NUMBOOT 1 97 #else 98 #define NUMBOOT 2 99 #endif 100 #endif 101 102 void makelabel __P((char *, char *, struct disklabel *)); 103 int writelabel __P((int, char *, struct disklabel *)); 104 void l_perror __P((char *)); 105 struct disklabel * readlabel __P((int)); 106 struct disklabel * makebootarea __P((char *, struct disklabel *, int)); 107 void display __P((FILE *, struct disklabel *)); 108 int edit __P((struct disklabel *, int)); 109 int editit __P((void)); 110 char * skip __P((char *)); 111 char * word __P((char *)); 112 int getasciilabel __P((FILE *, struct disklabel *)); 113 int checklabel __P((struct disklabel *)); 114 void setbootflag __P((struct disklabel *)); 115 void Warning (char *, ...) __printflike(1, 2); 116 void usage __P((void)); 117 struct disklabel * getvirginlabel __P((void)); 118 119 #define DEFEDITOR _PATH_VI 120 #define streq(a,b) (strcmp(a,b) == 0) 121 122 char *dkname; 123 char *specname; 124 char tmpfil[] = PATH_TMPFILE; 125 126 char namebuf[BBSIZE], *np = namebuf; 127 struct disklabel lab; 128 char bootarea[BBSIZE]; 129 130 /* partition 'c' is the full disk and is special */ 131 #define FULL_DISK_PART 2 132 #define MAX_PART ('z') 133 #define MAX_NUM_PARTS (1 + MAX_PART - 'a') 134 char part_size_type[MAX_NUM_PARTS]; 135 char part_offset_type[MAX_NUM_PARTS]; 136 int part_set[MAX_NUM_PARTS]; 137 138 #if NUMBOOT > 0 139 int installboot; /* non-zero if we should install a boot program */ 140 char *bootbuf; /* pointer to buffer with remainder of boot prog */ 141 int bootsize; /* size of remaining boot program */ 142 char *xxboot; /* primary boot */ 143 char *bootxx; /* secondary boot */ 144 char boot0[MAXPATHLEN]; 145 char boot1[MAXPATHLEN]; 146 #endif 147 148 enum { 149 UNSPEC, EDIT, NOWRITE, READ, RESTORE, WRITE, WRITEABLE, WRITEBOOT 150 } op = UNSPEC; 151 152 int rflag; 153 int disable_write; /* set to disable writing to disk label */ 154 155 #ifdef DEBUG 156 int debug; 157 #define OPTIONS "BNRWb:denrs:w" 158 #else 159 #define OPTIONS "BNRWb:enrs:w" 160 #endif 161 162 int 163 main(argc, argv) 164 int argc; 165 char *argv[]; 166 { 167 register struct disklabel *lp; 168 FILE *t; 169 int ch, f = 0, flag, error = 0; 170 char *name = 0; 171 172 while ((ch = getopt(argc, argv, OPTIONS)) != -1) 173 switch (ch) { 174 #if NUMBOOT > 0 175 case 'B': 176 ++installboot; 177 break; 178 case 'b': 179 xxboot = optarg; 180 break; 181 #if NUMBOOT > 1 182 case 's': 183 bootxx = optarg; 184 break; 185 #endif 186 #endif 187 case 'N': 188 if (op != UNSPEC) 189 usage(); 190 op = NOWRITE; 191 break; 192 case 'n': 193 disable_write = 1; 194 break; 195 case 'R': 196 if (op != UNSPEC) 197 usage(); 198 op = RESTORE; 199 break; 200 case 'W': 201 if (op != UNSPEC) 202 usage(); 203 op = WRITEABLE; 204 break; 205 case 'e': 206 if (op != UNSPEC) 207 usage(); 208 op = EDIT; 209 break; 210 case 'r': 211 ++rflag; 212 break; 213 case 'w': 214 if (op != UNSPEC) 215 usage(); 216 op = WRITE; 217 break; 218 #ifdef DEBUG 219 case 'd': 220 debug++; 221 break; 222 #endif 223 case '?': 224 default: 225 usage(); 226 } 227 argc -= optind; 228 argv += optind; 229 #if NUMBOOT > 0 230 if (installboot) { 231 rflag++; 232 if (op == UNSPEC) 233 op = WRITEBOOT; 234 } else { 235 if (op == UNSPEC) 236 op = READ; 237 xxboot = bootxx = 0; 238 } 239 #else 240 if (op == UNSPEC) 241 op = READ; 242 #endif 243 if (argc < 1) 244 usage(); 245 246 dkname = argv[0]; 247 if (dkname[0] != '/') { 248 (void)sprintf(np, "%s%s%c", _PATH_DEV, dkname, 'a' + RAW_PART); 249 specname = np; 250 np += strlen(specname) + 1; 251 } else 252 specname = dkname; 253 f = open(specname, op == READ ? O_RDONLY : O_RDWR); 254 if (f < 0 && errno == ENOENT && dkname[0] != '/') { 255 (void)sprintf(specname, "%s%s", _PATH_DEV, dkname); 256 np = namebuf + strlen(specname) + 1; 257 f = open(specname, op == READ ? O_RDONLY : O_RDWR); 258 } 259 if (f < 0) 260 err(4, "%s", specname); 261 262 switch(op) { 263 264 case UNSPEC: 265 break; 266 267 case EDIT: 268 if (argc != 1) 269 usage(); 270 lp = readlabel(f); 271 error = edit(lp, f); 272 break; 273 274 case NOWRITE: 275 flag = 0; 276 if (ioctl(f, DIOCWLABEL, (char *)&flag) < 0) 277 err(4, "ioctl DIOCWLABEL"); 278 break; 279 280 case READ: 281 if (argc != 1) 282 usage(); 283 lp = readlabel(f); 284 display(stdout, lp); 285 error = checklabel(lp); 286 break; 287 288 case RESTORE: 289 #if NUMBOOT > 0 290 if (installboot && argc == 3) { 291 makelabel(argv[2], 0, &lab); 292 argc--; 293 294 /* 295 * We only called makelabel() for its side effect 296 * of setting the bootstrap file names. Discard 297 * all changes to `lab' so that all values in the 298 * final label come from the ASCII label. 299 */ 300 bzero((char *)&lab, sizeof(lab)); 301 } 302 #endif 303 if (argc != 2) 304 usage(); 305 if (!(t = fopen(argv[1], "r"))) 306 err(4, "%s", argv[1]); 307 if (!getasciilabel(t, &lab)) 308 exit(1); 309 lp = makebootarea(bootarea, &lab, f); 310 *lp = lab; 311 error = writelabel(f, bootarea, lp); 312 break; 313 314 case WRITE: 315 if (argc == 3) { 316 name = argv[2]; 317 argc--; 318 } 319 if (argc != 2) 320 usage(); 321 makelabel(argv[1], name, &lab); 322 lp = makebootarea(bootarea, &lab, f); 323 *lp = lab; 324 if (checklabel(lp) == 0) 325 error = writelabel(f, bootarea, lp); 326 break; 327 328 case WRITEABLE: 329 flag = 1; 330 if (ioctl(f, DIOCWLABEL, (char *)&flag) < 0) 331 err(4, "ioctl DIOCWLABEL"); 332 break; 333 334 #if NUMBOOT > 0 335 case WRITEBOOT: 336 { 337 struct disklabel tlab; 338 339 lp = readlabel(f); 340 tlab = *lp; 341 if (argc == 2) 342 makelabel(argv[1], 0, &lab); 343 lp = makebootarea(bootarea, &lab, f); 344 *lp = tlab; 345 if (checklabel(lp) == 0) 346 error = writelabel(f, bootarea, lp); 347 break; 348 } 349 #endif 350 } 351 exit(error); 352 } 353 354 /* 355 * Construct a prototype disklabel from /etc/disktab. As a side 356 * effect, set the names of the primary and secondary boot files 357 * if specified. 358 */ 359 void 360 makelabel(type, name, lp) 361 char *type, *name; 362 register struct disklabel *lp; 363 { 364 register struct disklabel *dp; 365 366 if (strcmp(type, "auto") == 0) 367 dp = getvirginlabel(); 368 else 369 dp = getdiskbyname(type); 370 if (dp == NULL) 371 errx(1, "%s: unknown disk type", type); 372 *lp = *dp; 373 #if NUMBOOT > 0 374 /* 375 * Set bootstrap name(s). 376 * 1. If set from command line, use those, 377 * 2. otherwise, check if disktab specifies them (b0 or b1), 378 * 3. otherwise, makebootarea() will choose ones based on the name 379 * of the disk special file. E.g. /dev/ra0 -> raboot, bootra 380 */ 381 if (!xxboot && lp->d_boot0) { 382 if (*lp->d_boot0 != '/') 383 (void)sprintf(boot0, "%s/%s", 384 _PATH_BOOTDIR, lp->d_boot0); 385 else 386 (void)strcpy(boot0, lp->d_boot0); 387 xxboot = boot0; 388 } 389 #if NUMBOOT > 1 390 if (!bootxx && lp->d_boot1) { 391 if (*lp->d_boot1 != '/') 392 (void)sprintf(boot1, "%s/%s", 393 _PATH_BOOTDIR, lp->d_boot1); 394 else 395 (void)strcpy(boot1, lp->d_boot1); 396 bootxx = boot1; 397 } 398 #endif 399 #endif 400 /* d_packname is union d_boot[01], so zero */ 401 bzero(lp->d_packname, sizeof(lp->d_packname)); 402 if (name) 403 (void)strncpy(lp->d_packname, name, sizeof(lp->d_packname)); 404 } 405 406 int 407 writelabel(f, boot, lp) 408 int f; 409 char *boot; 410 register struct disklabel *lp; 411 { 412 int flag; 413 #ifdef __alpha__ 414 u_long *p, sum; 415 int i; 416 #endif 417 #ifdef vax 418 register int i; 419 #endif 420 421 if (disable_write) { 422 Warning("write to disk label supressed - label was as follows:"); 423 display(stdout, lp); 424 return (0); 425 } else { 426 setbootflag(lp); 427 lp->d_magic = DISKMAGIC; 428 lp->d_magic2 = DISKMAGIC; 429 lp->d_checksum = 0; 430 lp->d_checksum = dkcksum(lp); 431 if (rflag) { 432 /* 433 * First set the kernel disk label, 434 * then write a label to the raw disk. 435 * If the SDINFO ioctl fails because it is unimplemented, 436 * keep going; otherwise, the kernel consistency checks 437 * may prevent us from changing the current (in-core) 438 * label. 439 */ 440 if (ioctl(f, DIOCSDINFO, lp) < 0 && 441 errno != ENODEV && errno != ENOTTY) { 442 l_perror("ioctl DIOCSDINFO"); 443 return (1); 444 } 445 (void)lseek(f, (off_t)0, SEEK_SET); 446 447 #ifdef __alpha__ 448 /* 449 * Generate the bootblock checksum for the SRM console. 450 */ 451 for (p = (u_long *)boot, i = 0, sum = 0; i < 63; i++) 452 sum += p[i]; 453 p[63] = sum; 454 #endif 455 456 /* 457 * write enable label sector before write (if necessary), 458 * disable after writing. 459 */ 460 flag = 1; 461 if (ioctl(f, DIOCWLABEL, &flag) < 0) 462 warn("ioctl DIOCWLABEL"); 463 if (write(f, boot, lp->d_bbsize) != lp->d_bbsize) { 464 warn("write"); 465 return (1); 466 } 467 #if NUMBOOT > 0 468 /* 469 * Output the remainder of the disklabel 470 */ 471 if (bootbuf && write(f, bootbuf, bootsize) != bootsize) { 472 warn("write"); 473 return(1); 474 } 475 #endif 476 flag = 0; 477 (void) ioctl(f, DIOCWLABEL, &flag); 478 } else if (ioctl(f, DIOCWDINFO, lp) < 0) { 479 l_perror("ioctl DIOCWDINFO"); 480 return (1); 481 } 482 #ifdef vax 483 if (lp->d_type == DTYPE_SMD && lp->d_flags & D_BADSECT) { 484 daddr_t alt; 485 486 alt = lp->d_ncylinders * lp->d_secpercyl - lp->d_nsectors; 487 for (i = 1; i < 11 && i < lp->d_nsectors; i += 2) { 488 (void)lseek(f, (off_t)((alt + i) * lp->d_secsize), 489 SEEK_SET); 490 if (write(f, boot, lp->d_secsize) < lp->d_secsize) 491 warn("alternate label %d write", i/2); 492 } 493 } 494 #endif 495 } 496 return (0); 497 } 498 499 void 500 l_perror(s) 501 char *s; 502 { 503 switch (errno) { 504 505 case ESRCH: 506 warnx("%s: no disk label on disk;", s); 507 fprintf(stderr, "add \"-r\" to install initial label\n"); 508 break; 509 510 case EINVAL: 511 warnx("%s: label magic number or checksum is wrong!", s); 512 fprintf(stderr, "(disklabel or kernel is out of date?)\n"); 513 break; 514 515 case EBUSY: 516 warnx("%s: open partition would move or shrink", s); 517 break; 518 519 case EXDEV: 520 warnx("%s: '%c' partition must start at beginning of disk", 521 s, 'a' + RAW_PART); 522 break; 523 524 default: 525 warn((char *)NULL); 526 break; 527 } 528 } 529 530 /* 531 * Fetch disklabel for disk. 532 * Use ioctl to get label unless -r flag is given. 533 */ 534 struct disklabel * 535 readlabel(f) 536 int f; 537 { 538 register struct disklabel *lp; 539 540 if (rflag) { 541 if (read(f, bootarea, BBSIZE) < BBSIZE) 542 err(4, "%s", specname); 543 for (lp = (struct disklabel *)bootarea; 544 lp <= (struct disklabel *)(bootarea + BBSIZE - sizeof(*lp)); 545 lp = (struct disklabel *)((char *)lp + 16)) 546 if (lp->d_magic == DISKMAGIC && 547 lp->d_magic2 == DISKMAGIC) 548 break; 549 if (lp > (struct disklabel *)(bootarea+BBSIZE-sizeof(*lp)) || 550 lp->d_magic != DISKMAGIC || lp->d_magic2 != DISKMAGIC || 551 dkcksum(lp) != 0) 552 errx(1, 553 "bad pack magic number (label is damaged, or pack is unlabeled)"); 554 } else { 555 lp = &lab; 556 if (ioctl(f, DIOCGDINFO, lp) < 0) 557 err(4, "ioctl DIOCGDINFO"); 558 } 559 return (lp); 560 } 561 562 /* 563 * Construct a bootarea (d_bbsize bytes) in the specified buffer ``boot'' 564 * Returns a pointer to the disklabel portion of the bootarea. 565 */ 566 struct disklabel * 567 makebootarea(boot, dp, f) 568 char *boot; 569 register struct disklabel *dp; 570 int f; 571 { 572 struct disklabel *lp; 573 register char *p; 574 int b; 575 #if NUMBOOT > 0 576 char *dkbasename; 577 struct stat sb; 578 #endif 579 #ifdef __alpha__ 580 u_long *bootinfo; 581 int n; 582 #endif 583 #ifdef __i386__ 584 char *tmpbuf; 585 int i, found; 586 #endif 587 588 /* XXX */ 589 if (dp->d_secsize == 0) { 590 dp->d_secsize = DEV_BSIZE; 591 dp->d_bbsize = BBSIZE; 592 } 593 lp = (struct disklabel *) 594 (boot + (LABELSECTOR * dp->d_secsize) + LABELOFFSET); 595 bzero((char *)lp, sizeof *lp); 596 #if NUMBOOT > 0 597 /* 598 * If we are not installing a boot program but we are installing a 599 * label on disk then we must read the current bootarea so we don't 600 * clobber the existing boot. 601 */ 602 if (!installboot) { 603 if (rflag) { 604 if (read(f, boot, BBSIZE) < BBSIZE) 605 err(4, "%s", specname); 606 bzero((char *)lp, sizeof *lp); 607 } 608 return (lp); 609 } 610 /* 611 * We are installing a boot program. Determine the name(s) and 612 * read them into the appropriate places in the boot area. 613 */ 614 if (!xxboot || !bootxx) { 615 dkbasename = np; 616 if ((p = rindex(dkname, '/')) == NULL) 617 p = dkname; 618 else 619 p++; 620 while (*p && !isdigit(*p)) 621 *np++ = *p++; 622 *np++ = '\0'; 623 624 if (!xxboot) { 625 (void)sprintf(boot0, "%s/boot1", _PATH_BOOTDIR); 626 xxboot = boot0; 627 } 628 #if NUMBOOT > 1 629 if (!bootxx) { 630 (void)sprintf(boot1, "%s/boot2", _PATH_BOOTDIR); 631 bootxx = boot1; 632 } 633 #endif 634 } 635 #ifdef DEBUG 636 if (debug) 637 fprintf(stderr, "bootstraps: xxboot = %s, bootxx = %s\n", 638 xxboot, bootxx ? bootxx : "NONE"); 639 #endif 640 641 /* 642 * Strange rules: 643 * 1. One-piece bootstrap (hp300/hp800) 644 * up to d_bbsize bytes of ``xxboot'' go in bootarea, the rest 645 * is remembered and written later following the bootarea. 646 * 2. Two-piece bootstraps (vax/i386?/mips?) 647 * up to d_secsize bytes of ``xxboot'' go in first d_secsize 648 * bytes of bootarea, remaining d_bbsize-d_secsize filled 649 * from ``bootxx''. 650 */ 651 b = open(xxboot, O_RDONLY); 652 if (b < 0) 653 err(4, "%s", xxboot); 654 #if NUMBOOT > 1 655 #ifdef __i386__ 656 /* 657 * XXX Botch alert. 658 * The i386 has the so-called fdisk table embedded into the 659 * primary bootstrap. We take care to not clobber it, but 660 * only if it does already contain some data. (Otherwise, 661 * the xxboot provides a template.) 662 */ 663 if ((tmpbuf = (char *)malloc((int)dp->d_secsize)) == 0) 664 err(4, "%s", xxboot); 665 memcpy((void *)tmpbuf, (void *)boot, (int)dp->d_secsize); 666 #endif /* i386 */ 667 if (read(b, boot, (int)dp->d_secsize) < 0) 668 err(4, "%s", xxboot); 669 (void)close(b); 670 #ifdef __i386__ 671 for (i = DOSPARTOFF, found = 0; 672 !found && i < DOSPARTOFF + NDOSPART*sizeof(struct dos_partition); 673 i++) 674 found = tmpbuf[i] != 0; 675 if (found) 676 memcpy((void *)&boot[DOSPARTOFF], 677 (void *)&tmpbuf[DOSPARTOFF], 678 NDOSPART * sizeof(struct dos_partition)); 679 free(tmpbuf); 680 #endif /* i386 */ 681 b = open(bootxx, O_RDONLY); 682 if (b < 0) 683 err(4, "%s", bootxx); 684 if (fstat(b, &sb) != 0) 685 err(4, "%s", bootxx); 686 if (dp->d_secsize + sb.st_size > dp->d_bbsize) 687 errx(4, "%s too large", bootxx); 688 if (read(b, &boot[dp->d_secsize], 689 (int)(dp->d_bbsize-dp->d_secsize)) < 0) 690 err(4, "%s", bootxx); 691 #else /* !(NUMBOOT > 1) */ 692 #ifdef __alpha__ 693 /* 694 * On the alpha, the primary bootstrap starts at the 695 * second sector of the boot area. The first sector 696 * contains the label and must be edited to contain the 697 * size and location of the primary bootstrap. 698 */ 699 n = read(b, boot + dp->d_secsize, (int)dp->d_bbsize); 700 if (n < 0) 701 err(4, "%s", xxboot); 702 bootinfo = (u_long *)(boot + 480); 703 bootinfo[0] = (n + dp->d_secsize - 1) / dp->d_secsize; 704 bootinfo[1] = 1; /* start at sector 1 */ 705 bootinfo[2] = 0; /* flags (must be zero) */ 706 #else /* !__alpha__ */ 707 if (read(b, boot, (int)dp->d_bbsize) < 0) 708 err(4, "%s", xxboot); 709 #endif /* __alpha__ */ 710 if (fstat(b, &sb) != 0) 711 err(4, "%s", xxboot); 712 bootsize = (int)sb.st_size - dp->d_bbsize; 713 if (bootsize > 0) { 714 /* XXX assume d_secsize is a power of two */ 715 bootsize = (bootsize + dp->d_secsize-1) & ~(dp->d_secsize-1); 716 bootbuf = (char *)malloc((size_t)bootsize); 717 if (bootbuf == 0) 718 err(4, "%s", xxboot); 719 if (read(b, bootbuf, bootsize) < 0) { 720 free(bootbuf); 721 err(4, "%s", xxboot); 722 } 723 } 724 #endif /* NUMBOOT > 1 */ 725 (void)close(b); 726 #endif /* NUMBOOT > 0 */ 727 /* 728 * Make sure no part of the bootstrap is written in the area 729 * reserved for the label. 730 */ 731 for (p = (char *)lp; p < (char *)lp + sizeof(struct disklabel); p++) 732 if (*p) 733 errx(2, "bootstrap doesn't leave room for disk label"); 734 return (lp); 735 } 736 737 void 738 display(f, lp) 739 FILE *f; 740 register struct disklabel *lp; 741 { 742 register int i, j; 743 register struct partition *pp; 744 745 fprintf(f, "# %s:\n", specname); 746 if ((unsigned) lp->d_type < DKMAXTYPES) 747 fprintf(f, "type: %s\n", dktypenames[lp->d_type]); 748 else 749 fprintf(f, "type: %u\n", lp->d_type); 750 fprintf(f, "disk: %.*s\n", (int)sizeof(lp->d_typename), 751 lp->d_typename); 752 fprintf(f, "label: %.*s\n", (int)sizeof(lp->d_packname), 753 lp->d_packname); 754 fprintf(f, "flags:"); 755 if (lp->d_flags & D_REMOVABLE) 756 fprintf(f, " removeable"); 757 if (lp->d_flags & D_ECC) 758 fprintf(f, " ecc"); 759 if (lp->d_flags & D_BADSECT) 760 fprintf(f, " badsect"); 761 fprintf(f, "\n"); 762 fprintf(f, "bytes/sector: %lu\n", (u_long)lp->d_secsize); 763 fprintf(f, "sectors/track: %lu\n", (u_long)lp->d_nsectors); 764 fprintf(f, "tracks/cylinder: %lu\n", (u_long)lp->d_ntracks); 765 fprintf(f, "sectors/cylinder: %lu\n", (u_long)lp->d_secpercyl); 766 fprintf(f, "cylinders: %lu\n", (u_long)lp->d_ncylinders); 767 fprintf(f, "sectors/unit: %lu\n", (u_long)lp->d_secperunit); 768 fprintf(f, "rpm: %u\n", lp->d_rpm); 769 fprintf(f, "interleave: %u\n", lp->d_interleave); 770 fprintf(f, "trackskew: %u\n", lp->d_trackskew); 771 fprintf(f, "cylinderskew: %u\n", lp->d_cylskew); 772 fprintf(f, "headswitch: %lu\t\t# milliseconds\n", 773 (u_long)lp->d_headswitch); 774 fprintf(f, "track-to-track seek: %ld\t# milliseconds\n", 775 (u_long)lp->d_trkseek); 776 fprintf(f, "drivedata: "); 777 for (i = NDDATA - 1; i >= 0; i--) 778 if (lp->d_drivedata[i]) 779 break; 780 if (i < 0) 781 i = 0; 782 for (j = 0; j <= i; j++) 783 fprintf(f, "%lu ", (u_long)lp->d_drivedata[j]); 784 fprintf(f, "\n\n%u partitions:\n", lp->d_npartitions); 785 fprintf(f, 786 "# size offset fstype [fsize bsize bps/cpg]\n"); 787 pp = lp->d_partitions; 788 for (i = 0; i < lp->d_npartitions; i++, pp++) { 789 if (pp->p_size) { 790 fprintf(f, " %c: %8lu %8lu ", 'a' + i, 791 (u_long)pp->p_size, (u_long)pp->p_offset); 792 if ((unsigned) pp->p_fstype < FSMAXTYPES) 793 fprintf(f, "%8.8s", fstypenames[pp->p_fstype]); 794 else 795 fprintf(f, "%8d", pp->p_fstype); 796 switch (pp->p_fstype) { 797 798 case FS_UNUSED: /* XXX */ 799 fprintf(f, " %5lu %5lu %5.5s ", 800 (u_long)pp->p_fsize, 801 (u_long)(pp->p_fsize * pp->p_frag), ""); 802 break; 803 804 case FS_BSDFFS: 805 fprintf(f, " %5lu %5lu %5u ", 806 (u_long)pp->p_fsize, 807 (u_long)(pp->p_fsize * pp->p_frag), 808 pp->p_cpg); 809 break; 810 811 case FS_BSDLFS: 812 fprintf(f, " %5lu %5lu %5d", 813 (u_long)pp->p_fsize, 814 (u_long)(pp->p_fsize * pp->p_frag), 815 pp->p_cpg); 816 break; 817 818 default: 819 fprintf(f, "%20.20s", ""); 820 break; 821 } 822 fprintf(f, "\t# (Cyl. %4lu", 823 (u_long)(pp->p_offset / lp->d_secpercyl)); 824 if (pp->p_offset % lp->d_secpercyl) 825 putc('*', f); 826 else 827 putc(' ', f); 828 fprintf(f, "- %lu", 829 (u_long)((pp->p_offset + pp->p_size + 830 lp->d_secpercyl - 1) / 831 lp->d_secpercyl - 1)); 832 if (pp->p_size % lp->d_secpercyl) 833 putc('*', f); 834 fprintf(f, ")\n"); 835 } 836 } 837 fflush(f); 838 } 839 840 int 841 edit(lp, f) 842 struct disklabel *lp; 843 int f; 844 { 845 register int c, fd; 846 struct disklabel label; 847 FILE *fp; 848 849 if ((fd = mkstemp(tmpfil)) == -1 || 850 (fp = fdopen(fd, "w")) == NULL) { 851 warnx("can't create %s", tmpfil); 852 return (1); 853 } 854 display(fp, lp); 855 fclose(fp); 856 for (;;) { 857 if (!editit()) 858 break; 859 fp = fopen(tmpfil, "r"); 860 if (fp == NULL) { 861 warnx("can't reopen %s for reading", tmpfil); 862 break; 863 } 864 bzero((char *)&label, sizeof(label)); 865 if (getasciilabel(fp, &label)) { 866 *lp = label; 867 if (writelabel(f, bootarea, lp) == 0) { 868 fclose(fp); 869 (void) unlink(tmpfil); 870 return (0); 871 } 872 } 873 fclose(fp); 874 printf("re-edit the label? [y]: "); fflush(stdout); 875 c = getchar(); 876 if (c != EOF && c != (int)'\n') 877 while (getchar() != (int)'\n') 878 ; 879 if (c == (int)'n') 880 break; 881 } 882 (void) unlink(tmpfil); 883 return (1); 884 } 885 886 int 887 editit() 888 { 889 register int pid, xpid; 890 int stat, omask; 891 892 omask = sigblock(sigmask(SIGINT)|sigmask(SIGQUIT)|sigmask(SIGHUP)); 893 while ((pid = fork()) < 0) { 894 if (errno == EPROCLIM) { 895 warnx("you have too many processes"); 896 return(0); 897 } 898 if (errno != EAGAIN) { 899 warn("fork"); 900 return(0); 901 } 902 sleep(1); 903 } 904 if (pid == 0) { 905 register char *ed; 906 907 sigsetmask(omask); 908 setgid(getgid()); 909 setuid(getuid()); 910 if ((ed = getenv("EDITOR")) == (char *)0) 911 ed = DEFEDITOR; 912 execlp(ed, ed, tmpfil, (char *)0); 913 err(1, "%s", ed); 914 } 915 while ((xpid = wait(&stat)) >= 0) 916 if (xpid == pid) 917 break; 918 sigsetmask(omask); 919 return(!stat); 920 } 921 922 char * 923 skip(cp) 924 register char *cp; 925 { 926 927 while (*cp != '\0' && isspace(*cp)) 928 cp++; 929 if (*cp == '\0' || *cp == '#') 930 return ((char *)NULL); 931 return (cp); 932 } 933 934 char * 935 word(cp) 936 register char *cp; 937 { 938 register char c; 939 940 while (*cp != '\0' && !isspace(*cp) && *cp != '#') 941 cp++; 942 if ((c = *cp) != '\0') { 943 *cp++ = '\0'; 944 if (c != '#') 945 return (skip(cp)); 946 } 947 return ((char *)NULL); 948 } 949 950 /* 951 * Read an ascii label in from fd f, 952 * in the same format as that put out by display(), 953 * and fill in lp. 954 */ 955 int 956 getasciilabel(f, lp) 957 FILE *f; 958 register struct disklabel *lp; 959 { 960 register char **cpp, *cp; 961 register struct partition *pp; 962 unsigned int part; 963 char *tp, *s, line[BUFSIZ]; 964 int v, lineno = 0, errors = 0; 965 966 lp->d_bbsize = BBSIZE; /* XXX */ 967 lp->d_sbsize = SBSIZE; /* XXX */ 968 while (fgets(line, sizeof(line) - 1, f)) { 969 lineno++; 970 if ((cp = index(line,'\n')) != 0) 971 *cp = '\0'; 972 cp = skip(line); 973 if (cp == NULL) 974 continue; 975 tp = index(cp, ':'); 976 if (tp == NULL) { 977 fprintf(stderr, "line %d: syntax error\n", lineno); 978 errors++; 979 continue; 980 } 981 *tp++ = '\0', tp = skip(tp); 982 if (streq(cp, "type")) { 983 if (tp == NULL) 984 tp = "unknown"; 985 cpp = dktypenames; 986 for (; cpp < &dktypenames[DKMAXTYPES]; cpp++) 987 if ((s = *cpp) && streq(s, tp)) { 988 lp->d_type = cpp - dktypenames; 989 goto next; 990 } 991 v = atoi(tp); 992 if ((unsigned)v >= DKMAXTYPES) 993 fprintf(stderr, "line %d:%s %d\n", lineno, 994 "Warning, unknown disk type", v); 995 lp->d_type = v; 996 continue; 997 } 998 if (streq(cp, "flags")) { 999 for (v = 0; (cp = tp) && *cp != '\0';) { 1000 tp = word(cp); 1001 if (streq(cp, "removeable")) 1002 v |= D_REMOVABLE; 1003 else if (streq(cp, "ecc")) 1004 v |= D_ECC; 1005 else if (streq(cp, "badsect")) 1006 v |= D_BADSECT; 1007 else { 1008 fprintf(stderr, 1009 "line %d: %s: bad flag\n", 1010 lineno, cp); 1011 errors++; 1012 } 1013 } 1014 lp->d_flags = v; 1015 continue; 1016 } 1017 if (streq(cp, "drivedata")) { 1018 register int i; 1019 1020 for (i = 0; (cp = tp) && *cp != '\0' && i < NDDATA;) { 1021 lp->d_drivedata[i++] = atoi(cp); 1022 tp = word(cp); 1023 } 1024 continue; 1025 } 1026 if (sscanf(cp, "%d partitions", &v) == 1) { 1027 if (v == 0 || (unsigned)v > MAXPARTITIONS) { 1028 fprintf(stderr, 1029 "line %d: bad # of partitions\n", lineno); 1030 lp->d_npartitions = MAXPARTITIONS; 1031 errors++; 1032 } else 1033 lp->d_npartitions = v; 1034 continue; 1035 } 1036 if (tp == NULL) 1037 tp = ""; 1038 if (streq(cp, "disk")) { 1039 strncpy(lp->d_typename, tp, sizeof (lp->d_typename)); 1040 continue; 1041 } 1042 if (streq(cp, "label")) { 1043 strncpy(lp->d_packname, tp, sizeof (lp->d_packname)); 1044 continue; 1045 } 1046 if (streq(cp, "bytes/sector")) { 1047 v = atoi(tp); 1048 if (v <= 0 || (v % DEV_BSIZE) != 0) { 1049 fprintf(stderr, 1050 "line %d: %s: bad sector size\n", 1051 lineno, tp); 1052 errors++; 1053 } else 1054 lp->d_secsize = v; 1055 continue; 1056 } 1057 if (streq(cp, "sectors/track")) { 1058 v = atoi(tp); 1059 if (v <= 0) { 1060 fprintf(stderr, "line %d: %s: bad %s\n", 1061 lineno, tp, cp); 1062 errors++; 1063 } else 1064 lp->d_nsectors = v; 1065 continue; 1066 } 1067 if (streq(cp, "sectors/cylinder")) { 1068 v = atoi(tp); 1069 if (v <= 0) { 1070 fprintf(stderr, "line %d: %s: bad %s\n", 1071 lineno, tp, cp); 1072 errors++; 1073 } else 1074 lp->d_secpercyl = v; 1075 continue; 1076 } 1077 if (streq(cp, "tracks/cylinder")) { 1078 v = atoi(tp); 1079 if (v <= 0) { 1080 fprintf(stderr, "line %d: %s: bad %s\n", 1081 lineno, tp, cp); 1082 errors++; 1083 } else 1084 lp->d_ntracks = v; 1085 continue; 1086 } 1087 if (streq(cp, "cylinders")) { 1088 v = atoi(tp); 1089 if (v <= 0) { 1090 fprintf(stderr, "line %d: %s: bad %s\n", 1091 lineno, tp, cp); 1092 errors++; 1093 } else 1094 lp->d_ncylinders = v; 1095 continue; 1096 } 1097 if (streq(cp, "sectors/unit")) { 1098 v = atoi(tp); 1099 if (v <= 0) { 1100 fprintf(stderr, "line %d: %s: bad %s\n", 1101 lineno, tp, cp); 1102 errors++; 1103 } else 1104 lp->d_secperunit = v; 1105 continue; 1106 } 1107 if (streq(cp, "rpm")) { 1108 v = atoi(tp); 1109 if (v <= 0) { 1110 fprintf(stderr, "line %d: %s: bad %s\n", 1111 lineno, tp, cp); 1112 errors++; 1113 } else 1114 lp->d_rpm = v; 1115 continue; 1116 } 1117 if (streq(cp, "interleave")) { 1118 v = atoi(tp); 1119 if (v <= 0) { 1120 fprintf(stderr, "line %d: %s: bad %s\n", 1121 lineno, tp, cp); 1122 errors++; 1123 } else 1124 lp->d_interleave = v; 1125 continue; 1126 } 1127 if (streq(cp, "trackskew")) { 1128 v = atoi(tp); 1129 if (v < 0) { 1130 fprintf(stderr, "line %d: %s: bad %s\n", 1131 lineno, tp, cp); 1132 errors++; 1133 } else 1134 lp->d_trackskew = v; 1135 continue; 1136 } 1137 if (streq(cp, "cylinderskew")) { 1138 v = atoi(tp); 1139 if (v < 0) { 1140 fprintf(stderr, "line %d: %s: bad %s\n", 1141 lineno, tp, cp); 1142 errors++; 1143 } else 1144 lp->d_cylskew = v; 1145 continue; 1146 } 1147 if (streq(cp, "headswitch")) { 1148 v = atoi(tp); 1149 if (v < 0) { 1150 fprintf(stderr, "line %d: %s: bad %s\n", 1151 lineno, tp, cp); 1152 errors++; 1153 } else 1154 lp->d_headswitch = v; 1155 continue; 1156 } 1157 if (streq(cp, "track-to-track seek")) { 1158 v = atoi(tp); 1159 if (v < 0) { 1160 fprintf(stderr, "line %d: %s: bad %s\n", 1161 lineno, tp, cp); 1162 errors++; 1163 } else 1164 lp->d_trkseek = v; 1165 continue; 1166 } 1167 /* the ':' was removed above */ 1168 if ('a' <= *cp && *cp <= MAX_PART && cp[1] == '\0') { 1169 part = *cp - 'a'; 1170 if (part >= lp->d_npartitions) { 1171 fprintf(stderr, 1172 "line %d: partition name out of range a-%c: %s\n", 1173 lineno, 'a' + lp->d_npartitions - 1, cp); 1174 errors++; 1175 continue; 1176 } 1177 pp = &lp->d_partitions[part]; 1178 part_set[part] = 1; 1179 #define NXTNUM(n) { \ 1180 if (tp == NULL) { \ 1181 fprintf(stderr, "line %d: too few numeric fields\n", lineno); \ 1182 errors++; \ 1183 break; \ 1184 } else { \ 1185 cp = tp, tp = word(cp); \ 1186 if (tp == NULL) \ 1187 tp = cp; \ 1188 (n) = atoi(cp); \ 1189 } \ 1190 } 1191 /* retain 1 character following number */ 1192 #define NXTWORD(w,n) { \ 1193 if (tp == NULL) { \ 1194 fprintf(stderr, "line %d: too few numeric fields\n", lineno); \ 1195 errors++; \ 1196 break; \ 1197 } else { \ 1198 char *tmp; \ 1199 cp = tp, tp = word(cp); \ 1200 if (tp == NULL) \ 1201 tp = cp; \ 1202 (n) = strtol(cp,&tmp,10); \ 1203 if (tmp) (w) = *tmp; \ 1204 } \ 1205 } 1206 v = 0; 1207 NXTWORD(part_size_type[part],v); 1208 if (v < 0 || (v == 0 && part_size_type[part] != '*')) { 1209 fprintf(stderr, 1210 "line %d: %s: bad partition size\n", 1211 lineno, cp); 1212 errors++; 1213 break; 1214 } else { 1215 pp->p_size = v; 1216 1217 v = 0; 1218 NXTWORD(part_offset_type[part],v); 1219 if (v < 0 || (v == 0 && 1220 part_offset_type[part] != '*' && 1221 part_offset_type[part] != '\0')) { 1222 fprintf(stderr, 1223 "line %d: %s: bad partition offset\n", 1224 lineno, cp); 1225 errors++; 1226 break; 1227 } else { 1228 pp->p_offset = v; 1229 cp = tp, tp = word(cp); 1230 cpp = fstypenames; 1231 for (; cpp < &fstypenames[FSMAXTYPES]; cpp++) 1232 if ((s = *cpp) && streq(s, cp)) { 1233 pp->p_fstype = cpp - 1234 fstypenames; 1235 goto gottype; 1236 } 1237 if (isdigit(*cp)) 1238 v = atoi(cp); 1239 else 1240 v = FSMAXTYPES; 1241 if ((unsigned)v >= FSMAXTYPES) { 1242 fprintf(stderr, 1243 "line %d: Warning, unknown " 1244 "filesystem type %s\n", 1245 lineno, cp); 1246 v = FS_UNUSED; 1247 } 1248 pp->p_fstype = v; 1249 gottype:; 1250 /* 1251 * Note: NXTNUM will break us out of the 1252 * switch only! 1253 */ 1254 switch (pp->p_fstype) { 1255 case FS_UNUSED: 1256 /* 1257 * allow us to accept defaults for 1258 * fsize/frag/cpg 1259 */ 1260 if (tp) { 1261 NXTNUM(pp->p_fsize); 1262 if (pp->p_fsize == 0) 1263 break; 1264 NXTNUM(v); 1265 pp->p_frag = v / pp->p_fsize; 1266 } 1267 /* else default to 0's */ 1268 break; 1269 1270 /* These happen to be the same */ 1271 case FS_BSDFFS: 1272 case FS_BSDLFS: 1273 if (tp) { 1274 NXTNUM(pp->p_fsize); 1275 if (pp->p_fsize == 0) 1276 break; 1277 NXTNUM(v); 1278 pp->p_frag = v / pp->p_fsize; 1279 NXTNUM(pp->p_cpg); 1280 } else { 1281 /* 1282 * FIX! poor attempt at 1283 * adaptive 1284 */ 1285 /* 1 GB */ 1286 if (pp->p_size < 1*1024*1024*1024/lp->d_secsize) { 1287 /* FIX! These are too low, but are traditional */ 1288 pp->p_fsize = DEFAULT_NEWFS_BLOCK; 1289 pp->p_frag = (unsigned char) DEFAULT_NEWFS_FRAG; 1290 pp->p_cpg = DEFAULT_NEWFS_CPG; 1291 } else { 1292 pp->p_fsize = BIG_NEWFS_BLOCK; 1293 pp->p_frag = (unsigned char) BIG_NEWFS_FRAG; 1294 pp->p_cpg = BIG_NEWFS_CPG; 1295 } 1296 } 1297 break; 1298 default: 1299 break; 1300 } 1301 1302 /* 1303 * note: we may not have 1304 * gotten all the entries for 1305 * the fs though if we didn't, 1306 * errors will be set. 1307 */ 1308 } 1309 } 1310 continue; 1311 } 1312 fprintf(stderr, "line %d: %s: Unknown disklabel field\n", 1313 lineno, cp); 1314 errors++; 1315 next:; 1316 } 1317 errors += checklabel(lp); 1318 return (errors == 0); 1319 } 1320 1321 /* 1322 * Check disklabel for errors and fill in 1323 * derived fields according to supplied values. 1324 */ 1325 int 1326 checklabel(lp) 1327 register struct disklabel *lp; 1328 { 1329 register struct partition *pp; 1330 int i, errors = 0; 1331 char part; 1332 unsigned long total_size, total_percent, current_offset; 1333 int seen_default_offset; 1334 int hog_part; 1335 int j; 1336 struct partition *pp2; 1337 1338 if (lp->d_secsize == 0) { 1339 fprintf(stderr, "sector size 0\n"); 1340 return (1); 1341 } 1342 if (lp->d_nsectors == 0) { 1343 fprintf(stderr, "sectors/track 0\n"); 1344 return (1); 1345 } 1346 if (lp->d_ntracks == 0) { 1347 fprintf(stderr, "tracks/cylinder 0\n"); 1348 return (1); 1349 } 1350 if (lp->d_ncylinders == 0) { 1351 fprintf(stderr, "cylinders/unit 0\n"); 1352 errors++; 1353 } 1354 if (lp->d_rpm == 0) 1355 Warning("revolutions/minute 0"); 1356 if (lp->d_secpercyl == 0) 1357 lp->d_secpercyl = lp->d_nsectors * lp->d_ntracks; 1358 if (lp->d_secperunit == 0) 1359 lp->d_secperunit = lp->d_secpercyl * lp->d_ncylinders; 1360 if (lp->d_bbsize == 0) { 1361 fprintf(stderr, "boot block size 0\n"); 1362 errors++; 1363 } else if (lp->d_bbsize % lp->d_secsize) 1364 Warning("boot block size %% sector-size != 0"); 1365 if (lp->d_sbsize == 0) { 1366 fprintf(stderr, "super block size 0\n"); 1367 errors++; 1368 } else if (lp->d_sbsize % lp->d_secsize) 1369 Warning("super block size %% sector-size != 0"); 1370 if (lp->d_npartitions > MAXPARTITIONS) 1371 Warning("number of partitions (%lu) > MAXPARTITIONS (%d)", 1372 (u_long)lp->d_npartitions, MAXPARTITIONS); 1373 1374 /* first allocate space to the partitions, then offsets */ 1375 total_size = 0; /* in sectors */ 1376 total_percent = 0; /* in percent */ 1377 hog_part = -1; 1378 /* find all fixed partitions */ 1379 for (i = 0; i < lp->d_npartitions; i++) { 1380 pp = &lp->d_partitions[i]; 1381 if (part_set[i]) { 1382 if (part_size_type[i] == '*') { 1383 /* partition 2 ('c') is special */ 1384 if (i == FULL_DISK_PART) { 1385 pp->p_size = lp->d_secperunit; 1386 } else { 1387 if (hog_part != -1) 1388 Warning("Too many '*' partitions (%c and %c)", 1389 hog_part + 'a',i + 'a'); 1390 else 1391 hog_part = i; 1392 } 1393 } else { 1394 off_t size; 1395 1396 size = pp->p_size; 1397 switch (part_size_type[i]) { 1398 case '%': 1399 total_percent += size; 1400 break; 1401 case 'k': 1402 case 'K': 1403 size *= 1024ULL; 1404 break; 1405 case 'm': 1406 case 'M': 1407 size *= 1024ULL * 1024ULL; 1408 break; 1409 case 'g': 1410 case 'G': 1411 size *= 1024ULL * 1024ULL * 1024ULL; 1412 break; 1413 case '\0': 1414 break; 1415 default: 1416 Warning("unknown size specifier '%c' (K/M/G are valid)",part_size_type[i]); 1417 break; 1418 } 1419 /* don't count %'s yet */ 1420 if (part_size_type[i] != '%') { 1421 /* 1422 * for all not in sectors, convert to 1423 * sectors 1424 */ 1425 if (part_size_type[i] != '\0') { 1426 if (size % lp->d_secsize != 0) 1427 Warning("partition %c not an integer number of sectors", 1428 i + 'a'); 1429 size /= lp->d_secsize; 1430 pp->p_size = size; 1431 } 1432 /* else already in sectors */ 1433 /* partition 2 ('c') is special */ 1434 if (i != FULL_DISK_PART) 1435 total_size += size; 1436 } 1437 } 1438 } 1439 } 1440 /* handle % partitions - note %'s don't need to add up to 100! */ 1441 if (total_percent != 0) { 1442 long free_space = lp->d_secperunit - total_size; 1443 if (total_percent > 100) { 1444 fprintf(stderr,"total percentage %d is greater than 100\n", 1445 total_percent); 1446 errors++; 1447 } 1448 1449 if (free_space > 0) { 1450 for (i = 0; i < lp->d_npartitions; i++) { 1451 pp = &lp->d_partitions[i]; 1452 if (part_set[i] && part_size_type[i] == '%') { 1453 /* careful of overflows! and integer roundoff */ 1454 pp->p_size = ((double)pp->p_size/100) * free_space; 1455 total_size += pp->p_size; 1456 1457 /* FIX we can lose a sector or so due to roundoff per 1458 partition. A more complex algorithm could avoid that */ 1459 } 1460 } 1461 } else { 1462 fprintf(stderr, 1463 "%ld sectors available to give to '*' and '%' partitions\n", 1464 free_space); 1465 errors++; 1466 /* fix? set all % partitions to size 0? */ 1467 } 1468 } 1469 /* give anything remaining to the hog partition */ 1470 if (hog_part != -1) { 1471 lp->d_partitions[hog_part].p_size = lp->d_secperunit - total_size; 1472 total_size = lp->d_secperunit; 1473 } 1474 1475 /* Now set the offsets for each partition */ 1476 current_offset = 0; /* in sectors */ 1477 seen_default_offset = 0; 1478 for (i = 0; i < lp->d_npartitions; i++) { 1479 part = 'a' + i; 1480 pp = &lp->d_partitions[i]; 1481 if (part_set[i]) { 1482 if (part_offset_type[i] == '*') { 1483 /* partition 2 ('c') is special */ 1484 if (i == FULL_DISK_PART) { 1485 pp->p_offset = 0; 1486 } else { 1487 pp->p_offset = current_offset; 1488 seen_default_offset = 1; 1489 } 1490 } else { 1491 /* allow them to be out of order for old-style tables */ 1492 /* partition 2 ('c') is special */ 1493 if (pp->p_offset < current_offset && 1494 seen_default_offset && i != FULL_DISK_PART) { 1495 fprintf(stderr, 1496 "Offset %ld for partition %c overlaps previous partition which ends at %ld\n", 1497 pp->p_offset,i+'a',current_offset); 1498 fprintf(stderr, 1499 "Labels with any *'s for offset must be in ascending order by sector\n"); 1500 errors++; 1501 } else if (pp->p_offset != current_offset && 1502 i != FULL_DISK_PART && seen_default_offset) { 1503 /* 1504 * this may give unneeded warnings if 1505 * partitions are out-of-order 1506 */ 1507 Warning( 1508 "Offset %ld for partition %c doesn't match expected value %ld", 1509 pp->p_offset, i + 'a', current_offset); 1510 } 1511 } 1512 /* partition 2 ('c') is special */ 1513 if (i != FULL_DISK_PART) 1514 current_offset = pp->p_offset + pp->p_size; 1515 } 1516 } 1517 1518 for (i = 0; i < lp->d_npartitions; i++) { 1519 part = 'a' + i; 1520 pp = &lp->d_partitions[i]; 1521 if (pp->p_size == 0 && pp->p_offset != 0) 1522 Warning("partition %c: size 0, but offset %lu", 1523 part, (u_long)pp->p_offset); 1524 #ifdef notdef 1525 if (pp->p_size % lp->d_secpercyl) 1526 Warning("partition %c: size %% cylinder-size != 0", 1527 part); 1528 if (pp->p_offset % lp->d_secpercyl) 1529 Warning("partition %c: offset %% cylinder-size != 0", 1530 part); 1531 #endif 1532 if (pp->p_offset > lp->d_secperunit) { 1533 fprintf(stderr, 1534 "partition %c: offset past end of unit\n", part); 1535 errors++; 1536 } 1537 if (pp->p_offset + pp->p_size > lp->d_secperunit) { 1538 fprintf(stderr, 1539 "partition %c: partition extends past end of unit\n", 1540 part); 1541 errors++; 1542 } 1543 if (i == FULL_DISK_PART) 1544 { 1545 if (pp->p_fstype != FS_UNUSED) 1546 Warning("partition %c is not marked as unused!",part); 1547 if (pp->p_offset != 0) 1548 Warning("partition %c doesn't start at 0!",part); 1549 if (pp->p_size != lp->d_secperunit) 1550 Warning("partition %c doesn't cover the whole unit!",part); 1551 1552 if ((pp->p_fstype != FS_UNUSED) || (pp->p_offset != 0) || 1553 (pp->p_size != lp->d_secperunit)) { 1554 Warning("An incorrect partition %c may cause problems for " 1555 "standard system utilities",part); 1556 } 1557 } 1558 1559 /* check for overlaps */ 1560 /* this will check for all possible overlaps once and only once */ 1561 for (j = 0; j < i; j++) { 1562 /* partition 2 ('c') is special */ 1563 if (j != FULL_DISK_PART && i != FULL_DISK_PART && 1564 part_set[i] && part_set[j]) { 1565 pp2 = &lp->d_partitions[j]; 1566 if (pp2->p_offset < pp->p_offset + pp->p_size && 1567 (pp2->p_offset + pp2->p_size > pp->p_offset || 1568 pp2->p_offset >= pp->p_offset)) { 1569 fprintf(stderr,"partitions %c and %c overlap!\n", 1570 j + 'a', i + 'a'); 1571 errors++; 1572 } 1573 } 1574 } 1575 } 1576 for (; i < MAXPARTITIONS; i++) { 1577 part = 'a' + i; 1578 pp = &lp->d_partitions[i]; 1579 if (pp->p_size || pp->p_offset) 1580 Warning("unused partition %c: size %d offset %lu", 1581 'a' + i, pp->p_size, (u_long)pp->p_offset); 1582 } 1583 return (errors); 1584 } 1585 1586 /* 1587 * When operating on a "virgin" disk, try getting an initial label 1588 * from the associated device driver. This might work for all device 1589 * drivers that are able to fetch some initial device parameters 1590 * without even having access to a (BSD) disklabel, like SCSI disks, 1591 * most IDE drives, or vn devices. 1592 * 1593 * The device name must be given in its "canonical" form. 1594 */ 1595 struct disklabel * 1596 getvirginlabel(void) 1597 { 1598 static struct disklabel lab; 1599 char namebuf[BBSIZE]; 1600 int f; 1601 1602 if (dkname[0] == '/') { 1603 warnx("\"auto\" requires the usage of a canonical disk name"); 1604 return (NULL); 1605 } 1606 (void)snprintf(namebuf, BBSIZE, "%s%s", _PATH_DEV, dkname); 1607 if ((f = open(namebuf, O_RDONLY)) == -1) { 1608 warn("cannot open %s", namebuf); 1609 return (NULL); 1610 } 1611 1612 /* 1613 * Try to use the new get-virgin-label ioctl. If it fails, 1614 * fallback to the old get-disdk-info ioctl. 1615 */ 1616 if (ioctl(f, DIOCGDVIRGIN, &lab) < 0) { 1617 if (ioctl(f, DIOCGDINFO, &lab) < 0) { 1618 warn("ioctl DIOCGDINFO"); 1619 close(f); 1620 return (NULL); 1621 } 1622 } 1623 close(f); 1624 lab.d_boot0 = NULL; 1625 lab.d_boot1 = NULL; 1626 return (&lab); 1627 } 1628 1629 /* 1630 * If we are installing a boot program that doesn't fit in d_bbsize 1631 * we need to mark those partitions that the boot overflows into. 1632 * This allows newfs to prevent creation of a filesystem where it might 1633 * clobber bootstrap code. 1634 */ 1635 void 1636 setbootflag(lp) 1637 register struct disklabel *lp; 1638 { 1639 register struct partition *pp; 1640 int i, errors = 0; 1641 char part; 1642 u_long boffset; 1643 1644 if (bootbuf == 0) 1645 return; 1646 boffset = bootsize / lp->d_secsize; 1647 for (i = 0; i < lp->d_npartitions; i++) { 1648 part = 'a' + i; 1649 pp = &lp->d_partitions[i]; 1650 if (pp->p_size == 0) 1651 continue; 1652 if (boffset <= pp->p_offset) { 1653 if (pp->p_fstype == FS_BOOT) 1654 pp->p_fstype = FS_UNUSED; 1655 } else if (pp->p_fstype != FS_BOOT) { 1656 if (pp->p_fstype != FS_UNUSED) { 1657 fprintf(stderr, 1658 "boot overlaps used partition %c\n", 1659 part); 1660 errors++; 1661 } else { 1662 pp->p_fstype = FS_BOOT; 1663 Warning("boot overlaps partition %c, %s", 1664 part, "marked as FS_BOOT"); 1665 } 1666 } 1667 } 1668 if (errors) 1669 errx(4, "cannot install boot program"); 1670 } 1671 1672 /*VARARGS1*/ 1673 void 1674 Warning(char *fmt, ...) 1675 { 1676 va_list ap; 1677 1678 fprintf(stderr, "Warning, "); 1679 va_start(ap, fmt); 1680 vfprintf(stderr, fmt, ap); 1681 fprintf(stderr, "\n"); 1682 va_end(ap); 1683 } 1684 1685 void 1686 usage() 1687 { 1688 #if NUMBOOT > 0 1689 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", 1690 "usage: disklabel [-r] disk", 1691 "\t\t(to read label)", 1692 " disklabel -w [-r] [-n] disk type [ packid ]", 1693 "\t\t(to write label with existing boot program)", 1694 " disklabel -e [-r] [-n] disk", 1695 "\t\t(to edit label)", 1696 " disklabel -R [-r] [-n] disk protofile", 1697 "\t\t(to restore label with existing boot program)", 1698 #if NUMBOOT > 1 1699 " disklabel -B [-n] [ -b boot1 [ -s boot2 ] ] disk [ type ]", 1700 "\t\t(to install boot program with existing label)", 1701 " disklabel -w -B [-n] [ -b boot1 [ -s boot2 ] ] disk type [ packid ]", 1702 "\t\t(to write label and boot program)", 1703 " disklabel -R -B [-n] [ -b boot1 [ -s boot2 ] ] disk protofile [ type ]", 1704 "\t\t(to restore label and boot program)", 1705 #else 1706 " disklabel -B [-n] [ -b bootprog ] disk [ type ]", 1707 "\t\t(to install boot program with existing on-disk label)", 1708 " disklabel -w -B [-n] [ -b bootprog ] disk type [ packid ]", 1709 "\t\t(to write label and install boot program)", 1710 " disklabel -R -B [-n] [ -b bootprog ] disk protofile [ type ]", 1711 "\t\t(to restore label and install boot program)", 1712 #endif 1713 " disklabel [-NW] disk", 1714 "\t\t(to write disable/enable label)"); 1715 #else 1716 fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n", 1717 "usage: disklabel [-r] disk", "(to read label)", 1718 " disklabel -w [-r] [-n] disk type [ packid ]", 1719 "\t\t(to write label)", 1720 " disklabel -e [-r] [-n] disk", 1721 "\t\t(to edit label)", 1722 " disklabel -R [-r] [-n] disk protofile", 1723 "\t\t(to restore label)", 1724 " disklabel [-NW] disk", 1725 "\t\t(to write disable/enable label)"); 1726 #endif 1727 exit(1); 1728 } 1729