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 *, ...); 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, 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 int i; 963 unsigned int part; 964 char *tp, *s, line[BUFSIZ]; 965 int v, lineno = 0, errors = 0; 966 967 lp->d_bbsize = BBSIZE; /* XXX */ 968 lp->d_sbsize = SBSIZE; /* XXX */ 969 while (fgets(line, sizeof(line) - 1, f)) { 970 lineno++; 971 if ((cp = index(line,'\n')) != 0) 972 *cp = '\0'; 973 cp = skip(line); 974 if (cp == NULL) 975 continue; 976 tp = index(cp, ':'); 977 if (tp == NULL) { 978 fprintf(stderr, "line %d: syntax error\n", lineno); 979 errors++; 980 continue; 981 } 982 *tp++ = '\0', tp = skip(tp); 983 if (streq(cp, "type")) { 984 if (tp == NULL) 985 tp = "unknown"; 986 cpp = dktypenames; 987 for (; cpp < &dktypenames[DKMAXTYPES]; cpp++) 988 if ((s = *cpp) && streq(s, tp)) { 989 lp->d_type = cpp - dktypenames; 990 goto next; 991 } 992 v = atoi(tp); 993 if ((unsigned)v >= DKMAXTYPES) 994 fprintf(stderr, "line %d:%s %d\n", lineno, 995 "Warning, unknown disk type", v); 996 lp->d_type = v; 997 continue; 998 } 999 if (streq(cp, "flags")) { 1000 for (v = 0; (cp = tp) && *cp != '\0';) { 1001 tp = word(cp); 1002 if (streq(cp, "removeable")) 1003 v |= D_REMOVABLE; 1004 else if (streq(cp, "ecc")) 1005 v |= D_ECC; 1006 else if (streq(cp, "badsect")) 1007 v |= D_BADSECT; 1008 else { 1009 fprintf(stderr, 1010 "line %d: %s: bad flag\n", 1011 lineno, cp); 1012 errors++; 1013 } 1014 } 1015 lp->d_flags = v; 1016 continue; 1017 } 1018 if (streq(cp, "drivedata")) { 1019 register int i; 1020 1021 for (i = 0; (cp = tp) && *cp != '\0' && i < NDDATA;) { 1022 lp->d_drivedata[i++] = atoi(cp); 1023 tp = word(cp); 1024 } 1025 continue; 1026 } 1027 if (sscanf(cp, "%d partitions", &v) == 1) { 1028 if (v == 0 || (unsigned)v > MAXPARTITIONS) { 1029 fprintf(stderr, 1030 "line %d: bad # of partitions\n", lineno); 1031 lp->d_npartitions = MAXPARTITIONS; 1032 errors++; 1033 } else 1034 lp->d_npartitions = v; 1035 continue; 1036 } 1037 if (tp == NULL) 1038 tp = ""; 1039 if (streq(cp, "disk")) { 1040 strncpy(lp->d_typename, tp, sizeof (lp->d_typename)); 1041 continue; 1042 } 1043 if (streq(cp, "label")) { 1044 strncpy(lp->d_packname, tp, sizeof (lp->d_packname)); 1045 continue; 1046 } 1047 if (streq(cp, "bytes/sector")) { 1048 v = atoi(tp); 1049 if (v <= 0 || (v % DEV_BSIZE) != 0) { 1050 fprintf(stderr, 1051 "line %d: %s: bad sector size\n", 1052 lineno, tp); 1053 errors++; 1054 } else 1055 lp->d_secsize = v; 1056 continue; 1057 } 1058 if (streq(cp, "sectors/track")) { 1059 v = atoi(tp); 1060 if (v <= 0) { 1061 fprintf(stderr, "line %d: %s: bad %s\n", 1062 lineno, tp, cp); 1063 errors++; 1064 } else 1065 lp->d_nsectors = v; 1066 continue; 1067 } 1068 if (streq(cp, "sectors/cylinder")) { 1069 v = atoi(tp); 1070 if (v <= 0) { 1071 fprintf(stderr, "line %d: %s: bad %s\n", 1072 lineno, tp, cp); 1073 errors++; 1074 } else 1075 lp->d_secpercyl = v; 1076 continue; 1077 } 1078 if (streq(cp, "tracks/cylinder")) { 1079 v = atoi(tp); 1080 if (v <= 0) { 1081 fprintf(stderr, "line %d: %s: bad %s\n", 1082 lineno, tp, cp); 1083 errors++; 1084 } else 1085 lp->d_ntracks = v; 1086 continue; 1087 } 1088 if (streq(cp, "cylinders")) { 1089 v = atoi(tp); 1090 if (v <= 0) { 1091 fprintf(stderr, "line %d: %s: bad %s\n", 1092 lineno, tp, cp); 1093 errors++; 1094 } else 1095 lp->d_ncylinders = v; 1096 continue; 1097 } 1098 if (streq(cp, "sectors/unit")) { 1099 v = atoi(tp); 1100 if (v <= 0) { 1101 fprintf(stderr, "line %d: %s: bad %s\n", 1102 lineno, tp, cp); 1103 errors++; 1104 } else 1105 lp->d_secperunit = v; 1106 continue; 1107 } 1108 if (streq(cp, "rpm")) { 1109 v = atoi(tp); 1110 if (v <= 0) { 1111 fprintf(stderr, "line %d: %s: bad %s\n", 1112 lineno, tp, cp); 1113 errors++; 1114 } else 1115 lp->d_rpm = v; 1116 continue; 1117 } 1118 if (streq(cp, "interleave")) { 1119 v = atoi(tp); 1120 if (v <= 0) { 1121 fprintf(stderr, "line %d: %s: bad %s\n", 1122 lineno, tp, cp); 1123 errors++; 1124 } else 1125 lp->d_interleave = v; 1126 continue; 1127 } 1128 if (streq(cp, "trackskew")) { 1129 v = atoi(tp); 1130 if (v < 0) { 1131 fprintf(stderr, "line %d: %s: bad %s\n", 1132 lineno, tp, cp); 1133 errors++; 1134 } else 1135 lp->d_trackskew = v; 1136 continue; 1137 } 1138 if (streq(cp, "cylinderskew")) { 1139 v = atoi(tp); 1140 if (v < 0) { 1141 fprintf(stderr, "line %d: %s: bad %s\n", 1142 lineno, tp, cp); 1143 errors++; 1144 } else 1145 lp->d_cylskew = v; 1146 continue; 1147 } 1148 if (streq(cp, "headswitch")) { 1149 v = atoi(tp); 1150 if (v < 0) { 1151 fprintf(stderr, "line %d: %s: bad %s\n", 1152 lineno, tp, cp); 1153 errors++; 1154 } else 1155 lp->d_headswitch = v; 1156 continue; 1157 } 1158 if (streq(cp, "track-to-track seek")) { 1159 v = atoi(tp); 1160 if (v < 0) { 1161 fprintf(stderr, "line %d: %s: bad %s\n", 1162 lineno, tp, cp); 1163 errors++; 1164 } else 1165 lp->d_trkseek = v; 1166 continue; 1167 } 1168 /* the ':' was removed above */ 1169 if ('a' <= *cp && *cp <= MAX_PART && cp[1] == '\0') { 1170 part = *cp - 'a'; 1171 if (part >= lp->d_npartitions) { 1172 fprintf(stderr, 1173 "line %d: partition name out of range a-%c: %s\n", 1174 lineno, 'a' + lp->d_npartitions - 1, cp); 1175 errors++; 1176 continue; 1177 } 1178 pp = &lp->d_partitions[part]; 1179 part_set[part] = 1; 1180 #define NXTNUM(n) { \ 1181 if (tp == NULL) { \ 1182 fprintf(stderr, "line %d: too few numeric fields\n", lineno); \ 1183 errors++; \ 1184 break; \ 1185 } else { \ 1186 cp = tp, tp = word(cp); \ 1187 if (tp == NULL) \ 1188 tp = cp; \ 1189 (n) = atoi(cp); \ 1190 } \ 1191 } 1192 /* retain 1 character following number */ 1193 #define NXTWORD(w,n) { \ 1194 if (tp == NULL) { \ 1195 fprintf(stderr, "line %d: too few numeric fields\n", lineno); \ 1196 errors++; \ 1197 break; \ 1198 } else { \ 1199 char *tmp; \ 1200 cp = tp, tp = word(cp); \ 1201 if (tp == NULL) \ 1202 tp = cp; \ 1203 (n) = strtol(cp,&tmp,10); \ 1204 if (tmp) (w) = *tmp; \ 1205 } \ 1206 } 1207 v = 0; 1208 NXTWORD(part_size_type[part],v); 1209 if (v < 0 || (v == 0 && part_size_type[part] != '*')) { 1210 fprintf(stderr, 1211 "line %d: %s: bad partition size\n", 1212 lineno, cp); 1213 errors++; 1214 break; 1215 } else { 1216 pp->p_size = v; 1217 1218 v = 0; 1219 NXTWORD(part_offset_type[part],v); 1220 if (v < 0 || (v == 0 && 1221 part_offset_type[part] != '*' && 1222 part_offset_type[part] != '\0')) { 1223 fprintf(stderr, 1224 "line %d: %s: bad partition offset\n", 1225 lineno, cp); 1226 errors++; 1227 break; 1228 } else { 1229 pp->p_offset = v; 1230 cp = tp, tp = word(cp); 1231 cpp = fstypenames; 1232 for (; cpp < &fstypenames[FSMAXTYPES]; cpp++) 1233 if ((s = *cpp) && streq(s, cp)) { 1234 pp->p_fstype = cpp - 1235 fstypenames; 1236 goto gottype; 1237 } 1238 if (isdigit(*cp)) 1239 v = atoi(cp); 1240 else 1241 v = FSMAXTYPES; 1242 if ((unsigned)v >= FSMAXTYPES) { 1243 fprintf(stderr, 1244 "line %d: Warning, unknown " 1245 "filesystem type %s\n", 1246 lineno, cp); 1247 v = FS_UNUSED; 1248 } 1249 pp->p_fstype = v; 1250 gottype:; 1251 /* 1252 * Note: NXTNUM will break us out of the 1253 * switch only! 1254 */ 1255 switch (pp->p_fstype) { 1256 case FS_UNUSED: 1257 /* 1258 * allow us to accept defaults for 1259 * fsize/frag/cpg 1260 */ 1261 if (tp) { 1262 NXTNUM(pp->p_fsize); 1263 if (pp->p_fsize == 0) 1264 break; 1265 NXTNUM(v); 1266 pp->p_frag = v / pp->p_fsize; 1267 } 1268 /* else default to 0's */ 1269 break; 1270 1271 /* These happen to be the same */ 1272 case FS_BSDFFS: 1273 case FS_BSDLFS: 1274 if (tp) { 1275 NXTNUM(pp->p_fsize); 1276 if (pp->p_fsize == 0) 1277 break; 1278 NXTNUM(v); 1279 pp->p_frag = v / pp->p_fsize; 1280 NXTNUM(pp->p_cpg); 1281 } else { 1282 /* 1283 * FIX! poor attempt at 1284 * adaptive 1285 */ 1286 /* 1 GB */ 1287 if (pp->p_size < 1*1024*1024*1024/lp->d_secsize) { 1288 /* FIX! These are too low, but are traditional */ 1289 pp->p_fsize = DEFAULT_NEWFS_BLOCK; 1290 pp->p_frag = (unsigned char) DEFAULT_NEWFS_FRAG; 1291 pp->p_cpg = DEFAULT_NEWFS_CPG; 1292 } else { 1293 pp->p_fsize = BIG_NEWFS_BLOCK; 1294 pp->p_frag = (unsigned char) BIG_NEWFS_FRAG; 1295 pp->p_cpg = BIG_NEWFS_CPG; 1296 } 1297 } 1298 break; 1299 default: 1300 break; 1301 } 1302 1303 /* 1304 * note: we may not have 1305 * gotten all the entries for 1306 * the fs though if we didn't, 1307 * errors will be set. 1308 */ 1309 } 1310 } 1311 continue; 1312 } 1313 fprintf(stderr, "line %d: %s: Unknown disklabel field\n", 1314 lineno, cp); 1315 errors++; 1316 next:; 1317 } 1318 errors += checklabel(lp); 1319 return (errors == 0); 1320 } 1321 1322 /* 1323 * Check disklabel for errors and fill in 1324 * derived fields according to supplied values. 1325 */ 1326 int 1327 checklabel(lp) 1328 register struct disklabel *lp; 1329 { 1330 register struct partition *pp; 1331 int i, errors = 0; 1332 char part; 1333 unsigned long total_size, total_percent, current_offset; 1334 int seen_default_offset; 1335 int hog_part; 1336 int j; 1337 struct partition *pp2; 1338 1339 if (lp->d_secsize == 0) { 1340 fprintf(stderr, "sector size 0\n"); 1341 return (1); 1342 } 1343 if (lp->d_nsectors == 0) { 1344 fprintf(stderr, "sectors/track 0\n"); 1345 return (1); 1346 } 1347 if (lp->d_ntracks == 0) { 1348 fprintf(stderr, "tracks/cylinder 0\n"); 1349 return (1); 1350 } 1351 if (lp->d_ncylinders == 0) { 1352 fprintf(stderr, "cylinders/unit 0\n"); 1353 errors++; 1354 } 1355 if (lp->d_rpm == 0) 1356 Warning("revolutions/minute 0"); 1357 if (lp->d_secpercyl == 0) 1358 lp->d_secpercyl = lp->d_nsectors * lp->d_ntracks; 1359 if (lp->d_secperunit == 0) 1360 lp->d_secperunit = lp->d_secpercyl * lp->d_ncylinders; 1361 if (lp->d_bbsize == 0) { 1362 fprintf(stderr, "boot block size 0\n"); 1363 errors++; 1364 } else if (lp->d_bbsize % lp->d_secsize) 1365 Warning("boot block size %% sector-size != 0"); 1366 if (lp->d_sbsize == 0) { 1367 fprintf(stderr, "super block size 0\n"); 1368 errors++; 1369 } else if (lp->d_sbsize % lp->d_secsize) 1370 Warning("super block size %% sector-size != 0"); 1371 if (lp->d_npartitions > MAXPARTITIONS) 1372 Warning("number of partitions (%lu) > MAXPARTITIONS (%d)", 1373 (u_long)lp->d_npartitions, MAXPARTITIONS); 1374 1375 /* first allocate space to the partitions, then offsets */ 1376 total_size = 0; /* in sectors */ 1377 total_percent = 0; /* in percent */ 1378 hog_part = -1; 1379 /* find all fixed partitions */ 1380 for (i = 0; i < lp->d_npartitions; i++) { 1381 pp = &lp->d_partitions[i]; 1382 if (part_set[i]) { 1383 if (part_size_type[i] == '*') { 1384 /* partition 2 ('c') is special */ 1385 if (i == FULL_DISK_PART) { 1386 pp->p_size = lp->d_secperunit; 1387 } else { 1388 if (hog_part != -1) 1389 Warning("Too many '*' partitions (%c and %c)", 1390 hog_part + 'a',i + 'a'); 1391 else 1392 hog_part = i; 1393 } 1394 } else { 1395 char *type; 1396 off_t size; 1397 1398 size = pp->p_size; 1399 switch (part_size_type[i]) { 1400 case '%': 1401 total_percent += size; 1402 break; 1403 case 'k': 1404 case 'K': 1405 size *= 1024ULL; 1406 break; 1407 case 'm': 1408 case 'M': 1409 size *= 1024ULL * 1024ULL; 1410 break; 1411 case 'g': 1412 case 'G': 1413 size *= 1024ULL * 1024ULL * 1024ULL; 1414 break; 1415 case '\0': 1416 break; 1417 default: 1418 Warning("unknown size specifier '%c' (K/M/G are valid)",part_size_type[i]); 1419 break; 1420 } 1421 /* don't count %'s yet */ 1422 if (part_size_type[i] != '%') { 1423 /* 1424 * for all not in sectors, convert to 1425 * sectors 1426 */ 1427 if (part_size_type[i] != '\0') { 1428 if (size % lp->d_secsize != 0) 1429 Warning("partition %c not an integer number of sectors", 1430 i + 'a'); 1431 size /= lp->d_secsize; 1432 pp->p_size = size; 1433 } 1434 /* else already in sectors */ 1435 /* partition 2 ('c') is special */ 1436 if (i != FULL_DISK_PART) 1437 total_size += size; 1438 } 1439 } 1440 } 1441 } 1442 /* handle % partitions - note %'s don't need to add up to 100! */ 1443 if (total_percent != 0) { 1444 long free_space = lp->d_secperunit - total_size; 1445 if (total_percent > 100) { 1446 fprintf(stderr,"total percentage %d is greater than 100\n", 1447 total_percent); 1448 errors++; 1449 } 1450 1451 if (free_space > 0) { 1452 for (i = 0; i < lp->d_npartitions; i++) { 1453 pp = &lp->d_partitions[i]; 1454 if (part_set[i] && part_size_type[i] == '%') { 1455 unsigned long old_size = pp->p_size; 1456 /* careful of overflows! and integer roundoff */ 1457 pp->p_size = ((double)pp->p_size/100) * free_space; 1458 total_size += pp->p_size; 1459 1460 /* FIX we can lose a sector or so due to roundoff per 1461 partition. A more complex algorithm could avoid that */ 1462 } 1463 } 1464 } else { 1465 fprintf(stderr, 1466 "%ld sectors available to give to '*' and '%' partitions\n", 1467 free_space); 1468 errors++; 1469 /* fix? set all % partitions to size 0? */ 1470 } 1471 } 1472 /* give anything remaining to the hog partition */ 1473 if (hog_part != -1) { 1474 lp->d_partitions[hog_part].p_size = lp->d_secperunit - total_size; 1475 total_size = lp->d_secperunit; 1476 } 1477 1478 /* Now set the offsets for each partition */ 1479 current_offset = 0; /* in sectors */ 1480 seen_default_offset = 0; 1481 for (i = 0; i < lp->d_npartitions; i++) { 1482 part = 'a' + i; 1483 pp = &lp->d_partitions[i]; 1484 if (part_set[i]) { 1485 if (part_offset_type[i] == '*') { 1486 /* partition 2 ('c') is special */ 1487 if (i == FULL_DISK_PART) { 1488 pp->p_offset = 0; 1489 } else { 1490 pp->p_offset = current_offset; 1491 seen_default_offset = 1; 1492 } 1493 } else { 1494 /* allow them to be out of order for old-style tables */ 1495 /* partition 2 ('c') is special */ 1496 if (pp->p_offset < current_offset && 1497 seen_default_offset && i != FULL_DISK_PART) { 1498 fprintf(stderr, 1499 "Offset %ld for partition %c overlaps previous partition which ends at %ld\n", 1500 pp->p_offset,i+'a',current_offset); 1501 fprintf(stderr, 1502 "Labels with any *'s for offset must be in ascending order by sector\n"); 1503 errors++; 1504 } else if (pp->p_offset != current_offset && 1505 i != FULL_DISK_PART && seen_default_offset) { 1506 /* 1507 * this may give unneeded warnings if 1508 * partitions are out-of-order 1509 */ 1510 Warning( 1511 "Offset %ld for partition %c doesn't match expected value %ld", 1512 pp->p_offset, i + 'a', current_offset); 1513 } 1514 } 1515 /* partition 2 ('c') is special */ 1516 if (i != FULL_DISK_PART) 1517 current_offset = pp->p_offset + pp->p_size; 1518 } 1519 } 1520 1521 for (i = 0; i < lp->d_npartitions; i++) { 1522 part = 'a' + i; 1523 pp = &lp->d_partitions[i]; 1524 if (pp->p_size == 0 && pp->p_offset != 0) 1525 Warning("partition %c: size 0, but offset %lu", 1526 part, (u_long)pp->p_offset); 1527 #ifdef notdef 1528 if (pp->p_size % lp->d_secpercyl) 1529 Warning("partition %c: size %% cylinder-size != 0", 1530 part); 1531 if (pp->p_offset % lp->d_secpercyl) 1532 Warning("partition %c: offset %% cylinder-size != 0", 1533 part); 1534 #endif 1535 if (pp->p_offset > lp->d_secperunit) { 1536 fprintf(stderr, 1537 "partition %c: offset past end of unit\n", part); 1538 errors++; 1539 } 1540 if (pp->p_offset + pp->p_size > lp->d_secperunit) { 1541 fprintf(stderr, 1542 "partition %c: partition extends past end of unit\n", 1543 part); 1544 errors++; 1545 } 1546 if (i == FULL_DISK_PART) 1547 { 1548 if (pp->p_fstype != FS_UNUSED) 1549 Warning("partition %c is not marked as unused!",part); 1550 if (pp->p_offset != 0) 1551 Warning("partition %c doesn't start at 0!",part); 1552 if (pp->p_size != lp->d_secperunit) 1553 Warning("partition %c doesn't cover the whole unit!",part); 1554 1555 if ((pp->p_fstype != FS_UNUSED) || (pp->p_offset != 0) || 1556 (pp->p_size != lp->d_secperunit)) { 1557 Warning("An incorrect partition %c may cause problems for " 1558 "standard system utilities",part); 1559 } 1560 } 1561 1562 /* check for overlaps */ 1563 /* this will check for all possible overlaps once and only once */ 1564 for (j = 0; j < i; j++) { 1565 /* partition 2 ('c') is special */ 1566 if (j != FULL_DISK_PART && i != FULL_DISK_PART && 1567 part_set[i] && part_set[j]) { 1568 pp2 = &lp->d_partitions[j]; 1569 if (pp2->p_offset < pp->p_offset + pp->p_size && 1570 (pp2->p_offset + pp2->p_size > pp->p_offset || 1571 pp2->p_offset >= pp->p_offset)) { 1572 fprintf(stderr,"partitions %c and %c overlap!\n", 1573 j + 'a', i + 'a'); 1574 errors++; 1575 } 1576 } 1577 } 1578 } 1579 for (; i < MAXPARTITIONS; i++) { 1580 part = 'a' + i; 1581 pp = &lp->d_partitions[i]; 1582 if (pp->p_size || pp->p_offset) 1583 Warning("unused partition %c: size %d offset %lu", 1584 'a' + i, pp->p_size, (u_long)pp->p_offset); 1585 } 1586 return (errors); 1587 } 1588 1589 /* 1590 * When operating on a "virgin" disk, try getting an initial label 1591 * from the associated device driver. This might work for all device 1592 * drivers that are able to fetch some initial device parameters 1593 * without even having access to a (BSD) disklabel, like SCSI disks, 1594 * most IDE drives, or vn devices. 1595 * 1596 * The device name must be given in its "canonical" form. 1597 */ 1598 struct disklabel * 1599 getvirginlabel(void) 1600 { 1601 static struct disklabel lab; 1602 char namebuf[BBSIZE]; 1603 int f; 1604 1605 if (dkname[0] == '/') { 1606 warnx("\"auto\" requires the usage of a canonical disk name"); 1607 return (NULL); 1608 } 1609 (void)snprintf(namebuf, BBSIZE, "%s%s", _PATH_DEV, dkname); 1610 if ((f = open(namebuf, O_RDONLY)) == -1) { 1611 warn("cannot open %s", namebuf); 1612 return (NULL); 1613 } 1614 1615 /* 1616 * Try to use the new get-virgin-label ioctl. If it fails, 1617 * fallback to the old get-disdk-info ioctl. 1618 */ 1619 if (ioctl(f, DIOCGDVIRGIN, &lab) < 0) { 1620 if (ioctl(f, DIOCGDINFO, &lab) < 0) { 1621 warn("ioctl DIOCGDINFO"); 1622 close(f); 1623 return (NULL); 1624 } 1625 } 1626 close(f); 1627 lab.d_boot0 = NULL; 1628 lab.d_boot1 = NULL; 1629 return (&lab); 1630 } 1631 1632 /* 1633 * If we are installing a boot program that doesn't fit in d_bbsize 1634 * we need to mark those partitions that the boot overflows into. 1635 * This allows newfs to prevent creation of a filesystem where it might 1636 * clobber bootstrap code. 1637 */ 1638 void 1639 setbootflag(lp) 1640 register struct disklabel *lp; 1641 { 1642 register struct partition *pp; 1643 int i, errors = 0; 1644 char part; 1645 u_long boffset; 1646 1647 if (bootbuf == 0) 1648 return; 1649 boffset = bootsize / lp->d_secsize; 1650 for (i = 0; i < lp->d_npartitions; i++) { 1651 part = 'a' + i; 1652 pp = &lp->d_partitions[i]; 1653 if (pp->p_size == 0) 1654 continue; 1655 if (boffset <= pp->p_offset) { 1656 if (pp->p_fstype == FS_BOOT) 1657 pp->p_fstype = FS_UNUSED; 1658 } else if (pp->p_fstype != FS_BOOT) { 1659 if (pp->p_fstype != FS_UNUSED) { 1660 fprintf(stderr, 1661 "boot overlaps used partition %c\n", 1662 part); 1663 errors++; 1664 } else { 1665 pp->p_fstype = FS_BOOT; 1666 Warning("boot overlaps partition %c, %s", 1667 part, "marked as FS_BOOT"); 1668 } 1669 } 1670 } 1671 if (errors) 1672 errx(4, "cannot install boot program"); 1673 } 1674 1675 /*VARARGS1*/ 1676 void 1677 Warning(char *fmt, ...) 1678 { 1679 va_list ap; 1680 1681 fprintf(stderr, "Warning, "); 1682 va_start(ap, fmt); 1683 vfprintf(stderr, fmt, ap); 1684 fprintf(stderr, "\n"); 1685 va_end(ap); 1686 } 1687 1688 void 1689 usage() 1690 { 1691 #if NUMBOOT > 0 1692 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", 1693 "usage: disklabel [-r] disk", 1694 "\t\t(to read label)", 1695 " disklabel -w [-r] [-n] disk type [ packid ]", 1696 "\t\t(to write label with existing boot program)", 1697 " disklabel -e [-r] [-n] disk", 1698 "\t\t(to edit label)", 1699 " disklabel -R [-r] [-n] disk protofile", 1700 "\t\t(to restore label with existing boot program)", 1701 #if NUMBOOT > 1 1702 " disklabel -B [-n] [ -b boot1 [ -s boot2 ] ] disk [ type ]", 1703 "\t\t(to install boot program with existing label)", 1704 " disklabel -w -B [-n] [ -b boot1 [ -s boot2 ] ] disk type [ packid ]", 1705 "\t\t(to write label and boot program)", 1706 " disklabel -R -B [-n] [ -b boot1 [ -s boot2 ] ] disk protofile [ type ]", 1707 "\t\t(to restore label and boot program)", 1708 #else 1709 " disklabel -B [-n] [ -b bootprog ] disk [ type ]", 1710 "\t\t(to install boot program with existing on-disk label)", 1711 " disklabel -w -B [-n] [ -b bootprog ] disk type [ packid ]", 1712 "\t\t(to write label and install boot program)", 1713 " disklabel -R -B [-n] [ -b bootprog ] disk protofile [ type ]", 1714 "\t\t(to restore label and install boot program)", 1715 #endif 1716 " disklabel [-NW] disk", 1717 "\t\t(to write disable/enable label)"); 1718 #else 1719 fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n", 1720 "usage: disklabel [-r] disk", "(to read label)", 1721 " disklabel -w [-r] [-n] disk type [ packid ]", 1722 "\t\t(to write label)", 1723 " disklabel -e [-r] [-n] disk", 1724 "\t\t(to edit label)", 1725 " disklabel -R [-r] [-n] disk protofile", 1726 "\t\t(to restore label)", 1727 " disklabel [-NW] disk", 1728 "\t\t(to write disable/enable label)"); 1729 #endif 1730 exit(1); 1731 } 1732