1 /* 2 * Copyright (c) 1980, 1986, 1988, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 static char copyright[] = 36 "@(#) Copyright (c) 1980, 1986, 1988, 1993\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38 #endif not lint 39 40 #ifndef lint 41 /*static char sccsid[] = "from: @(#)bad144.c 8.1 (Berkeley) 6/6/93";*/ 42 static char *rcsid = "$Id: bad144.c,v 1.7 1994/06/13 22:34:29 mycroft Exp $"; 43 #endif not lint 44 45 /* 46 * bad144 47 * 48 * This program prints and/or initializes a bad block record for a pack, 49 * in the format used by the DEC standard 144. 50 * It can also add bad sector(s) to the record, moving the sector 51 * replacements as necessary. 52 * 53 * It is preferable to write the bad information with a standard formatter, 54 * but this program will do. 55 * 56 * RP06 sectors are marked as bad by inverting the format bit in the 57 * header; on other drives the valid-sector bit is cleared. 58 */ 59 #include <sys/param.h> 60 #include <sys/dkbad.h> 61 #include <sys/ioctl.h> 62 #include <sys/file.h> 63 #include <sys/disklabel.h> 64 #include <ufs/ffs/fs.h> 65 66 #include <stdio.h> 67 #include <paths.h> 68 69 #define RETRIES 10 /* number of retries on reading old sectors */ 70 #ifdef i386 /* XXX */ 71 #define RAWPART "d" /* disk partition containing badsector tables */ 72 #else 73 #define RAWPART "c" /* disk partition containing badsector tables */ 74 #endif 75 76 int fflag, add, copy, verbose, nflag; 77 int compare(); 78 int dups; 79 int badfile = -1; /* copy of badsector table to use, -1 if any */ 80 #define MAXSECSIZE 1024 81 struct dkbad curbad, oldbad; 82 #define DKBAD_MAGIC 0x4321 83 84 char label[BBSIZE]; 85 daddr_t size, getold(), badsn(); 86 struct disklabel *dp; 87 char name[BUFSIZ]; 88 char *malloc(); 89 off_t lseek(); 90 91 main(argc, argv) 92 int argc; 93 char *argv[]; 94 { 95 register struct bt_bad *bt; 96 daddr_t sn, bn[126]; 97 int i, f, nbad, new, bad, errs; 98 99 argc--, argv++; 100 while (argc > 0 && **argv == '-') { 101 (*argv)++; 102 while (**argv) { 103 switch (**argv) { 104 #if vax 105 case 'f': 106 fflag++; 107 break; 108 #endif 109 case 'a': 110 add++; 111 break; 112 case 'c': 113 copy++; 114 break; 115 case 'v': 116 verbose++; 117 break; 118 case 'n': 119 nflag++; 120 verbose++; 121 break; 122 default: 123 if (**argv >= '0' && **argv <= '4') { 124 badfile = **argv - '0'; 125 break; 126 } 127 goto usage; 128 } 129 (*argv)++; 130 } 131 argc--, argv++; 132 } 133 if (argc < 1) { 134 usage: 135 fprintf(stderr, 136 "usage: bad144 [ -f ] disk [ snum [ bn ... ] ]\n"); 137 fprintf(stderr, 138 "to read or overwrite bad-sector table, e.g.: bad144 hp0\n"); 139 fprintf(stderr, 140 "or bad144 -a [ -f ] [ -c ] disk bn ...\n"); 141 fprintf(stderr, "where options are:\n"); 142 fprintf(stderr, "\t-a add new bad sectors to the table\n"); 143 fprintf(stderr, "\t-f reformat listed sectors as bad\n"); 144 fprintf(stderr, "\t-c copy original sector to replacement\n"); 145 exit(1); 146 } 147 if (argv[0][0] != '/') 148 (void)sprintf(name, "%s/r%s%s", _PATH_DEV, argv[0], RAWPART); 149 else 150 strcpy(name, argv[0]); 151 f = open(name, argc == 1? O_RDONLY : O_RDWR); 152 if (f < 0) 153 Perror(name); 154 #ifdef was 155 if (read(f, label, sizeof(label)) < 0) 156 Perror("read"); 157 for (dp = (struct disklabel *)(label + LABELOFFSET); 158 dp < (struct disklabel *) 159 (label + sizeof(label) - sizeof(struct disklabel)); 160 dp = (struct disklabel *)((char *)dp + 64)) 161 if (dp->d_magic == DISKMAGIC && dp->d_magic2 == DISKMAGIC) 162 break; 163 #else 164 /* obtain label and adjust to fit */ 165 dp = (struct disklabel *)&label; 166 if (ioctl(f, DIOCGDINFO, dp) < 0) 167 Perror("ioctl DIOCGDINFO"); 168 #endif 169 if (dp->d_magic != DISKMAGIC || dp->d_magic2 != DISKMAGIC 170 /* dkcksum(lp) != 0 */ ) { 171 fprintf(stderr, "Bad pack magic number (pack is unlabeled)\n"); 172 exit(1); 173 } 174 if (dp->d_secsize > MAXSECSIZE || dp->d_secsize <= 0) { 175 fprintf(stderr, "Disk sector size too large/small (%d)\n", 176 dp->d_secsize); 177 exit(7); 178 } 179 #ifdef i386 180 if (dp->d_type == DTYPE_SCSI) { 181 fprintf(stderr, "SCSI disks don't use bad144!\n"); 182 exit(1); 183 } 184 /* are we inside a DOS partition? */ 185 if (dp->d_partitions[0].p_offset) { 186 /* yes, rules change. assume bad tables at end of partition C, 187 which maps all of DOS partition we are within -wfj */ 188 size = dp->d_partitions[2].p_offset + dp->d_partitions[2].p_size; 189 } else 190 #endif 191 size = dp->d_nsectors * dp->d_ntracks * dp->d_ncylinders; 192 argc--; 193 argv++; 194 if (argc == 0) { 195 sn = getold(f, &oldbad); 196 printf("bad block information at sector %d in %s:\n", 197 sn, name); 198 printf("cartridge serial number: %d(10)\n", oldbad.bt_csn); 199 switch (oldbad.bt_flag) { 200 201 case (u_short)-1: 202 printf("alignment cartridge\n"); 203 break; 204 205 case DKBAD_MAGIC: 206 break; 207 208 default: 209 printf("bt_flag=%x(16)?\n", oldbad.bt_flag); 210 break; 211 } 212 bt = oldbad.bt_bad; 213 for (i = 0; i < 126; i++) { 214 bad = (bt->bt_cyl<<16) + bt->bt_trksec; 215 if (bad < 0) 216 break; 217 printf("sn=%d, cn=%d, tn=%d, sn=%d\n", badsn(bt), 218 bt->bt_cyl, bt->bt_trksec>>8, bt->bt_trksec&0xff); 219 bt++; 220 } 221 (void) checkold(&oldbad); 222 exit(0); 223 } 224 if (add) { 225 /* 226 * Read in the old badsector table. 227 * Verify that it makes sense, and the bad sectors 228 * are in order. Copy the old table to the new one. 229 */ 230 (void) getold(f, &oldbad); 231 i = checkold(&oldbad); 232 if (verbose) 233 printf("Had %d bad sectors, adding %d\n", i, argc); 234 if (i + argc > 126) { 235 printf("bad144: not enough room for %d more sectors\n", 236 argc); 237 printf("limited to 126 by information format\n"); 238 exit(1); 239 } 240 curbad = oldbad; 241 } else { 242 curbad.bt_csn = atoi(*argv++); 243 argc--; 244 curbad.bt_mbz = 0; 245 curbad.bt_flag = DKBAD_MAGIC; 246 if (argc > 126) { 247 printf("bad144: too many bad sectors specified\n"); 248 printf("limited to 126 by information format\n"); 249 exit(1); 250 } 251 i = 0; 252 } 253 errs = 0; 254 new = argc; 255 while (argc > 0) { 256 daddr_t sn = atoi(*argv++); 257 argc--; 258 if (sn < 0 || sn >= size) { 259 printf("%d: out of range [0,%d) for disk %s\n", 260 sn, size, dp->d_typename); 261 errs++; 262 continue; 263 } 264 bn[i] = sn; 265 curbad.bt_bad[i].bt_cyl = sn / (dp->d_nsectors*dp->d_ntracks); 266 sn %= (dp->d_nsectors*dp->d_ntracks); 267 curbad.bt_bad[i].bt_trksec = 268 ((sn/dp->d_nsectors) << 8) + (sn%dp->d_nsectors); 269 i++; 270 } 271 if (errs) 272 exit(1); 273 nbad = i; 274 while (i < 126) { 275 curbad.bt_bad[i].bt_trksec = -1; 276 curbad.bt_bad[i].bt_cyl = -1; 277 i++; 278 } 279 if (add) { 280 /* 281 * Sort the new bad sectors into the list. 282 * Then shuffle the replacement sectors so that 283 * the previous bad sectors get the same replacement data. 284 */ 285 qsort((char *)curbad.bt_bad, nbad, sizeof (struct bt_bad), 286 compare); 287 if (dups) { 288 fprintf(stderr, 289 "bad144: bad sectors have been duplicated; can't add existing sectors\n"); 290 exit(3); 291 } 292 shift(f, nbad, nbad-new); 293 } 294 if (badfile == -1) 295 i = 0; 296 else 297 i = badfile * 2; 298 for (; i < 10 && i < dp->d_nsectors; i += 2) { 299 if (lseek(f, dp->d_secsize * (size - dp->d_nsectors + i), 300 L_SET) < 0) 301 Perror("lseek"); 302 if (verbose) 303 printf("write badsect file at %d\n", 304 size - dp->d_nsectors + i); 305 if (nflag == 0 && write(f, (caddr_t)&curbad, sizeof(curbad)) != 306 sizeof(curbad)) { 307 char msg[80]; 308 (void)sprintf(msg, "bad144: write bad sector file %d", 309 i/2); 310 perror(msg); 311 } 312 if (badfile != -1) 313 break; 314 } 315 #ifdef vax 316 if (nflag == 0 && fflag) 317 for (i = nbad - new; i < nbad; i++) 318 format(f, bn[i]); 319 #endif 320 #ifdef DIOCSBAD 321 if (nflag == 0 && ioctl(f, DIOCSBAD, (caddr_t)&curbad) < 0) 322 fprintf(stderr, 323 "Can't sync bad-sector file; reboot for changes to take effect\n"); 324 #endif 325 if ((dp->d_flags & D_BADSECT) == 0 && nflag == 0) { 326 dp->d_flags |= D_BADSECT; 327 if (ioctl(f, DIOCWDINFO, dp) < 0) { 328 perror("label"); 329 fprintf(stderr, "Can't write label to enable bad sector handling\n"); 330 exit(1); 331 } 332 } 333 exit(0); 334 } 335 336 daddr_t 337 getold(f, bad) 338 struct dkbad *bad; 339 { 340 register int i; 341 daddr_t sn; 342 char msg[80]; 343 344 if (badfile == -1) 345 i = 0; 346 else 347 i = badfile * 2; 348 for (; i < 10 && i < dp->d_nsectors; i += 2) { 349 sn = size - dp->d_nsectors + i; 350 if (lseek(f, sn * dp->d_secsize, L_SET) < 0) 351 Perror("lseek"); 352 if (read(f, (char *) bad, dp->d_secsize) == dp->d_secsize) { 353 if (i > 0) 354 printf("Using bad-sector file %d\n", i/2); 355 return(sn); 356 } 357 (void)sprintf(msg, "bad144: read bad sector file at sn %d", sn); 358 perror(msg); 359 if (badfile != -1) 360 break; 361 } 362 fprintf(stderr, "bad144: %s: can't read bad block info\n", name); 363 exit(1); 364 /*NOTREACHED*/ 365 } 366 367 checkold() 368 { 369 register int i; 370 register struct bt_bad *bt; 371 daddr_t sn, lsn; 372 int errors = 0, warned = 0; 373 374 if (oldbad.bt_flag != DKBAD_MAGIC) { 375 fprintf(stderr, "bad144: %s: bad flag in bad-sector table\n", 376 name); 377 errors++; 378 } 379 if (oldbad.bt_mbz != 0) { 380 fprintf(stderr, "bad144: %s: bad magic number\n", name); 381 errors++; 382 } 383 bt = oldbad.bt_bad; 384 for (i = 0; i < 126; i++, bt++) { 385 if (bt->bt_cyl == 0xffff && bt->bt_trksec == 0xffff) 386 break; 387 if ((bt->bt_cyl >= dp->d_ncylinders) || 388 ((bt->bt_trksec >> 8) >= dp->d_ntracks) || 389 ((bt->bt_trksec & 0xff) >= dp->d_nsectors)) { 390 fprintf(stderr, 391 "bad144: cyl/trk/sect out of range in existing entry: "); 392 fprintf(stderr, "sn=%d, cn=%d, tn=%d, sn=%d\n", 393 badsn(bt), bt->bt_cyl, bt->bt_trksec>>8, 394 bt->bt_trksec & 0xff); 395 errors++; 396 } 397 sn = (bt->bt_cyl * dp->d_ntracks + 398 (bt->bt_trksec >> 8)) * 399 dp->d_nsectors + (bt->bt_trksec & 0xff); 400 if (i > 0 && sn < lsn && !warned) { 401 fprintf(stderr, 402 "bad144: bad sector file is out of order\n"); 403 errors++; 404 warned++; 405 } 406 if (i > 0 && sn == lsn) { 407 fprintf(stderr, 408 "bad144: bad sector file contains duplicates (sn %d)\n", 409 sn); 410 errors++; 411 } 412 lsn = sn; 413 } 414 if (errors) 415 exit(1); 416 return (i); 417 } 418 419 /* 420 * Move the bad sector replacements 421 * to make room for the new bad sectors. 422 * new is the new number of bad sectors, old is the previous count. 423 */ 424 shift(f, new, old) 425 { 426 daddr_t repl; 427 428 /* 429 * First replacement is last sector of second-to-last track. 430 */ 431 repl = size - dp->d_nsectors - 1; 432 new--; old--; 433 while (new >= 0 && new != old) { 434 if (old < 0 || 435 compare(&curbad.bt_bad[new], &oldbad.bt_bad[old]) > 0) { 436 /* 437 * Insert new replacement here-- copy original 438 * sector if requested and possible, 439 * otherwise write a zero block. 440 */ 441 if (!copy || 442 !blkcopy(f, badsn(&curbad.bt_bad[new]), repl - new)) 443 blkzero(f, repl - new); 444 } else { 445 if (blkcopy(f, repl - old, repl - new) == 0) 446 fprintf(stderr, 447 "Can't copy replacement sector %d to %d\n", 448 repl-old, repl-new); 449 old--; 450 } 451 new--; 452 } 453 } 454 455 char *buf; 456 457 /* 458 * Copy disk sector s1 to s2. 459 */ 460 blkcopy(f, s1, s2) 461 daddr_t s1, s2; 462 { 463 register tries, n; 464 465 if (buf == (char *)NULL) { 466 buf = malloc((unsigned)dp->d_secsize); 467 if (buf == (char *)NULL) { 468 fprintf(stderr, "Out of memory\n"); 469 exit(20); 470 } 471 } 472 for (tries = 0; tries < RETRIES; tries++) { 473 if (lseek(f, dp->d_secsize * s1, L_SET) < 0) 474 Perror("lseek"); 475 if ((n = read(f, buf, dp->d_secsize)) == dp->d_secsize) 476 break; 477 } 478 if (n != dp->d_secsize) { 479 fprintf(stderr, "bad144: can't read sector, %d: ", s1); 480 if (n < 0) 481 perror((char *)0); 482 return(0); 483 } 484 if (lseek(f, dp->d_secsize * s2, L_SET) < 0) 485 Perror("lseek"); 486 if (verbose) 487 printf("copying %d to %d\n", s1, s2); 488 if (nflag == 0 && write(f, buf, dp->d_secsize) != dp->d_secsize) { 489 fprintf(stderr, 490 "bad144: can't write replacement sector, %d: ", s2); 491 perror((char *)0); 492 return(0); 493 } 494 return(1); 495 } 496 497 char *zbuf; 498 499 blkzero(f, sn) 500 daddr_t sn; 501 { 502 503 if (zbuf == (char *)NULL) { 504 zbuf = malloc((unsigned)dp->d_secsize); 505 if (zbuf == (char *)NULL) { 506 fprintf(stderr, "Out of memory\n"); 507 exit(20); 508 } 509 } 510 if (lseek(f, dp->d_secsize * sn, L_SET) < 0) 511 Perror("lseek"); 512 if (verbose) 513 printf("zeroing %d\n", sn); 514 if (nflag == 0 && write(f, zbuf, dp->d_secsize) != dp->d_secsize) { 515 fprintf(stderr, 516 "bad144: can't write replacement sector, %d: ", sn); 517 perror((char *)0); 518 } 519 } 520 521 compare(b1, b2) 522 register struct bt_bad *b1, *b2; 523 { 524 if (b1->bt_cyl > b2->bt_cyl) 525 return(1); 526 if (b1->bt_cyl < b2->bt_cyl) 527 return(-1); 528 if (b1->bt_trksec == b2->bt_trksec) 529 dups++; 530 return (b1->bt_trksec - b2->bt_trksec); 531 } 532 533 daddr_t 534 badsn(bt) 535 register struct bt_bad *bt; 536 { 537 return ((bt->bt_cyl*dp->d_ntracks + (bt->bt_trksec>>8)) * dp->d_nsectors 538 + (bt->bt_trksec&0xff)); 539 } 540 541 #ifdef vax 542 543 struct rp06hdr { 544 short h_cyl; 545 short h_trksec; 546 short h_key1; 547 short h_key2; 548 char h_data[512]; 549 #define RP06_FMT 010000 /* 1 == 16 bit, 0 == 18 bit */ 550 }; 551 552 /* 553 * Most massbus and unibus drives 554 * have headers of this form 555 */ 556 struct hpuphdr { 557 u_short hpup_cyl; 558 u_char hpup_sect; 559 u_char hpup_track; 560 char hpup_data[512]; 561 #define HPUP_OKSECT 0xc000 /* this normally means sector is good */ 562 #define HPUP_16BIT 0x1000 /* 1 == 16 bit format */ 563 }; 564 int rp06format(), hpupformat(); 565 566 struct formats { 567 char *f_name; /* disk name */ 568 int f_bufsize; /* size of sector + header */ 569 int f_bic; /* value to bic in hpup_cyl */ 570 int (*f_routine)(); /* routine for special handling */ 571 } formats[] = { 572 { "rp06", sizeof (struct rp06hdr), RP06_FMT, rp06format }, 573 { "eagle", sizeof (struct hpuphdr), HPUP_OKSECT, hpupformat }, 574 { "capricorn", sizeof (struct hpuphdr), HPUP_OKSECT, hpupformat }, 575 { "rm03", sizeof (struct hpuphdr), HPUP_OKSECT, hpupformat }, 576 { "rm05", sizeof (struct hpuphdr), HPUP_OKSECT, hpupformat }, 577 { "9300", sizeof (struct hpuphdr), HPUP_OKSECT, hpupformat }, 578 { "9766", sizeof (struct hpuphdr), HPUP_OKSECT, hpupformat }, 579 { 0, 0, 0, 0 } 580 }; 581 582 /*ARGSUSED*/ 583 hpupformat(fp, dp, blk, buf, count) 584 struct formats *fp; 585 struct disklabel *dp; 586 daddr_t blk; 587 char *buf; 588 int count; 589 { 590 struct hpuphdr *hdr = (struct hpuphdr *)buf; 591 int sect; 592 593 if (count < sizeof(struct hpuphdr)) { 594 hdr->hpup_cyl = (HPUP_OKSECT | HPUP_16BIT) | 595 (blk / (dp->d_nsectors * dp->d_ntracks)); 596 sect = blk % (dp->d_nsectors * dp->d_ntracks); 597 hdr->hpup_track = (u_char)(sect / dp->d_nsectors); 598 hdr->hpup_sect = (u_char)(sect % dp->d_nsectors); 599 } 600 return (0); 601 } 602 603 /*ARGSUSED*/ 604 rp06format(fp, dp, blk, buf, count) 605 struct formats *fp; 606 struct disklabel *dp; 607 daddr_t blk; 608 char *buf; 609 int count; 610 { 611 612 if (count < sizeof(struct rp06hdr)) { 613 fprintf(stderr, "Can't read header on blk %d, can't reformat\n", 614 blk); 615 return (-1); 616 } 617 return (0); 618 } 619 620 format(fd, blk) 621 int fd; 622 daddr_t blk; 623 { 624 register struct formats *fp; 625 static char *buf; 626 static char bufsize; 627 struct format_op fop; 628 int n; 629 630 for (fp = formats; fp->f_name; fp++) 631 if (strcmp(dp->d_typename, fp->f_name) == 0) 632 break; 633 if (fp->f_name == 0) { 634 fprintf(stderr, "bad144: don't know how to format %s disks\n", 635 dp->d_typename); 636 exit(2); 637 } 638 if (buf && bufsize < fp->f_bufsize) { 639 free(buf); 640 buf = NULL; 641 } 642 if (buf == NULL) 643 buf = malloc((unsigned)fp->f_bufsize); 644 if (buf == NULL) { 645 fprintf(stderr, "bad144: can't allocate sector buffer\n"); 646 exit(3); 647 } 648 bufsize = fp->f_bufsize; 649 /* 650 * Here we do the actual formatting. All we really 651 * do is rewrite the sector header and flag the bad sector 652 * according to the format table description. If a special 653 * purpose format routine is specified, we allow it to 654 * process the sector as well. 655 */ 656 if (verbose) 657 printf("format blk %d\n", blk); 658 bzero((char *)&fop, sizeof(fop)); 659 fop.df_buf = buf; 660 fop.df_count = fp->f_bufsize; 661 fop.df_startblk = blk; 662 bzero(buf, fp->f_bufsize); 663 if (ioctl(fd, DIOCRFORMAT, &fop) < 0) 664 perror("bad144: read format"); 665 if (fp->f_routine && 666 (*fp->f_routine)(fp, dp, blk, buf, fop.df_count) != 0) 667 return; 668 if (fp->f_bic) { 669 struct hpuphdr *xp = (struct hpuphdr *)buf; 670 671 xp->hpup_cyl &= ~fp->f_bic; 672 } 673 if (nflag) 674 return; 675 bzero((char *)&fop, sizeof(fop)); 676 fop.df_buf = buf; 677 fop.df_count = fp->f_bufsize; 678 fop.df_startblk = blk; 679 if (ioctl(fd, DIOCWFORMAT, &fop) < 0) 680 Perror("write format"); 681 if (fop.df_count != fp->f_bufsize) { 682 char msg[80]; 683 (void)sprintf(msg, "bad144: write format %d", blk); 684 perror(msg); 685 } 686 } 687 #endif 688 689 Perror(op) 690 char *op; 691 { 692 693 fprintf(stderr, "bad144: "); perror(op); 694 exit(4); 695 } 696