1/* 2 * Copyright (c) 1980, 1986, 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 --- 18 unchanged lines hidden (view full) --- 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 |
35static const char sccsid[] = "@(#)utilities.c 8.6 (Berkeley) 5/19/95"; |
36#endif /* not lint */ 37 38#include <sys/param.h> 39#include <sys/time.h> |
40 |
41#include <ufs/ufs/dinode.h> 42#include <ufs/ufs/dir.h> 43#include <ufs/ffs/fs.h> 44#include <stdio.h> 45#include <stdlib.h> 46#include <unistd.h> 47#include <stdarg.h> 48#include <string.h> |
49#include <ctype.h> 50#include <err.h> 51 |
52#include "fsck.h" 53 54long diskreads, totalreads; /* Disk cache statistics */ 55 |
56static void rwerror __P((char *mesg, ufs_daddr_t blk)); |
57 58int 59ftypeok(dp) 60 struct dinode *dp; 61{ 62 switch (dp->di_mode & IFMT) { 63 64 case IFDIR: --- 53 unchanged lines hidden (view full) --- 118{ 119 register struct bufarea *bp; 120 long bufcnt, i; 121 char *bufp; 122 123 pbp = pdirbp = (struct bufarea *)0; 124 bufp = malloc((unsigned int)sblock.fs_bsize); 125 if (bufp == 0) |
126 errx(EEXIT, "cannot allocate buffer pool"); |
127 cgblk.b_un.b_buf = bufp; 128 initbarea(&cgblk); 129 bufhead.b_next = bufhead.b_prev = &bufhead; 130 bufcnt = MAXBUFSPACE / sblock.fs_bsize; 131 if (bufcnt < MINBUFS) 132 bufcnt = MINBUFS; 133 for (i = 0; i < bufcnt; i++) { 134 bp = (struct bufarea *)malloc(sizeof(struct bufarea)); 135 bufp = malloc((unsigned int)sblock.fs_bsize); 136 if (bp == NULL || bufp == NULL) { 137 if (i >= MINBUFS) 138 break; |
139 errx(EEXIT, "cannot allocate buffer pool"); |
140 } 141 bp->b_un.b_buf = bufp; 142 bp->b_prev = &bufhead; 143 bp->b_next = bufhead.b_next; 144 bufhead.b_next->b_prev = bp; 145 bufhead.b_next = bp; 146 initbarea(bp); 147 } 148 bufhead.b_size = i; /* save number of buffers */ 149} 150 151/* 152 * Manage a cache of directory blocks. 153 */ 154struct bufarea * 155getdatablk(blkno, size) |
156 ufs_daddr_t blkno; |
157 long size; 158{ 159 register struct bufarea *bp; 160 161 for (bp = bufhead.b_next; bp != &bufhead; bp = bp->b_next) 162 if (bp->b_bno == fsbtodb(&sblock, blkno)) 163 goto foundit; 164 for (bp = bufhead.b_prev; bp != &bufhead; bp = bp->b_prev) 165 if ((bp->b_flags & B_INUSE) == 0) 166 break; 167 if (bp == &bufhead) |
168 errx(EEXIT, "deadlocked buffer pool"); |
169 getblk(bp, blkno, size); 170 /* fall through */ 171foundit: 172 totalreads++; 173 bp->b_prev->b_next = bp->b_next; 174 bp->b_next->b_prev = bp->b_prev; 175 bp->b_prev = &bufhead; 176 bp->b_next = bufhead.b_next; 177 bufhead.b_next->b_prev = bp; 178 bufhead.b_next = bp; 179 bp->b_flags |= B_INUSE; 180 return (bp); 181} 182 183void 184getblk(bp, blk, size) 185 register struct bufarea *bp; |
186 ufs_daddr_t blk; |
187 long size; 188{ |
189 ufs_daddr_t dblk; |
190 191 dblk = fsbtodb(&sblock, blk); 192 if (bp->b_bno != dblk) { 193 flush(fswritefd, bp); 194 diskreads++; 195 bp->b_errs = bread(fsreadfd, bp->b_un.b_buf, dblk, size); 196 bp->b_bno = dblk; 197 bp->b_size = size; --- 21 unchanged lines hidden (view full) --- 219 for (i = 0, j = 0; i < sblock.fs_cssize; i += sblock.fs_bsize, j++) { 220 bwrite(fswritefd, (char *)sblock.fs_csp[j], 221 fsbtodb(&sblock, sblock.fs_csaddr + j * sblock.fs_frag), 222 sblock.fs_cssize - i < sblock.fs_bsize ? 223 sblock.fs_cssize - i : sblock.fs_bsize); 224 } 225} 226 |
227static void |
228rwerror(mesg, blk) 229 char *mesg; |
230 ufs_daddr_t blk; |
231{ 232 233 if (preen == 0) 234 printf("\n"); 235 pfatal("CANNOT %s: BLK %ld", mesg, blk); 236 if (reply("CONTINUE") == 0) |
237 exit(EEXIT); |
238} 239 240void |
241ckfini(markclean) 242 int markclean; |
243{ 244 register struct bufarea *bp, *nbp; |
245 int ofsmodified, cnt = 0; |
246 247 if (fswritefd < 0) { 248 (void)close(fsreadfd); 249 return; 250 } 251 flush(fswritefd, &sblk); 252 if (havesb && sblk.b_bno != SBOFF / dev_bsize && 253 !preen && reply("UPDATE STANDARD SUPERBLOCK")) { --- 6 unchanged lines hidden (view full) --- 260 for (bp = bufhead.b_prev; bp && bp != &bufhead; bp = nbp) { 261 cnt++; 262 flush(fswritefd, bp); 263 nbp = bp->b_prev; 264 free(bp->b_un.b_buf); 265 free((char *)bp); 266 } 267 if (bufhead.b_size != cnt) |
268 errx(EEXIT, "Panic: lost %d buffers", bufhead.b_size - cnt); |
269 pbp = pdirbp = (struct bufarea *)0; |
270 if (markclean && sblock.fs_clean == 0) { 271 sblock.fs_clean = 1; 272 sbdirty(); 273 ofsmodified = fsmodified; 274 flush(fswritefd, &sblk); 275 fsmodified = ofsmodified; 276 if (!preen) 277 printf("\n***** FILE SYSTEM MARKED CLEAN *****\n"); 278 } |
279 if (debug) 280 printf("cache missed %ld of %ld (%d%%)\n", diskreads, 281 totalreads, (int)(diskreads * 100 / totalreads)); 282 (void)close(fsreadfd); 283 (void)close(fswritefd); 284} 285 286int 287bread(fd, buf, blk, size) 288 int fd; 289 char *buf; |
290 ufs_daddr_t blk; |
291 long size; 292{ 293 char *cp; 294 int i, errs; 295 off_t offset; 296 297 offset = blk; 298 offset *= dev_bsize; 299 if (lseek(fd, offset, 0) < 0) 300 rwerror("SEEK", blk); 301 else if (read(fd, buf, (int)size) == size) 302 return (0); 303 rwerror("READ", blk); 304 if (lseek(fd, offset, 0) < 0) 305 rwerror("SEEK", blk); 306 errs = 0; |
307 memset(buf, 0, (size_t)size); |
308 printf("THE FOLLOWING DISK SECTORS COULD NOT BE READ:"); 309 for (cp = buf, i = 0; i < size; i += secsize, cp += secsize) { 310 if (read(fd, cp, (int)secsize) != secsize) { 311 (void)lseek(fd, offset + i + secsize, 0); 312 if (secsize != dev_bsize && dev_bsize != 1) 313 printf(" %ld (%ld),", 314 (blk * dev_bsize + i) / secsize, 315 blk + i / dev_bsize); --- 5 unchanged lines hidden (view full) --- 321 printf("\n"); 322 return (errs); 323} 324 325void 326bwrite(fd, buf, blk, size) 327 int fd; 328 char *buf; |
329 ufs_daddr_t blk; |
330 long size; 331{ 332 int i; 333 char *cp; 334 off_t offset; 335 336 if (fd < 0) 337 return; --- 16 unchanged lines hidden (view full) --- 354 } 355 printf("\n"); 356 return; 357} 358 359/* 360 * allocate a data block with the specified number of fragments 361 */ |
362ufs_daddr_t |
363allocblk(frags) 364 long frags; 365{ 366 register int i, j, k; 367 368 if (frags <= 0 || frags > sblock.fs_frag) 369 return (0); 370 for (i = 0; i < maxfsblock - sblock.fs_frag; i += sblock.fs_frag) { --- 16 unchanged lines hidden (view full) --- 387 return (0); 388} 389 390/* 391 * Free a previously allocated block 392 */ 393void 394freeblk(blkno, frags) |
395 ufs_daddr_t blkno; |
396 long frags; 397{ 398 struct inodesc idesc; 399 400 idesc.id_blkno = blkno; 401 idesc.id_numfrags = frags; 402 (void)pass4check(&idesc); 403} --- 16 unchanged lines hidden (view full) --- 420 return; 421 } 422 if (busy || 423 (statemap[curdir] != DSTATE && statemap[curdir] != DFOUND)) { 424 (void)strcpy(namebuf, "?"); 425 return; 426 } 427 busy = 1; |
428 memset(&idesc, 0, sizeof(struct inodesc)); |
429 idesc.id_type = DATA; 430 idesc.id_fix = IGNORE; 431 cp = &namebuf[MAXPATHLEN - 1]; 432 *cp = '\0'; 433 if (curdir != ino) { 434 idesc.id_parent = curdir; 435 goto namelookup; 436 } --- 7 unchanged lines hidden (view full) --- 444 idesc.id_number = idesc.id_parent; 445 idesc.id_parent = ino; 446 idesc.id_func = findname; 447 idesc.id_name = namebuf; 448 if ((ckinode(ginode(idesc.id_number), &idesc)&FOUND) == 0) 449 break; 450 len = strlen(namebuf); 451 cp -= len; |
452 memmove(cp, namebuf, (size_t)len); |
453 *--cp = '/'; 454 if (cp < &namebuf[MAXNAMLEN]) 455 break; 456 ino = idesc.id_number; 457 } 458 busy = 0; 459 if (ino != ROOTINO) 460 *--cp = '?'; |
461 memmove(namebuf, cp, (size_t)(&namebuf[MAXPATHLEN] - cp)); |
462} 463 464void |
465catch(sig) 466 int sig; |
467{ 468 if (!doinglevel2) |
469 ckfini(0); |
470 exit(12); 471} 472 473/* 474 * When preening, allow a single quit to signal 475 * a special exit after filesystem checks complete 476 * so that reboot sequence may be interrupted. 477 */ 478void |
479catchquit(sig) 480 int sig; |
481{ 482 printf("returning to single-user after filesystem check\n"); 483 returntosingle = 1; 484 (void)signal(SIGQUIT, SIG_DFL); 485} 486 487/* 488 * Ignore a single quit signal; wait and flush just in case. 489 * Used by child processes in preen. 490 */ 491void |
492voidquit(sig) 493 int sig; |
494{ 495 496 sleep(1); 497 (void)signal(SIGQUIT, SIG_IGN); 498 (void)signal(SIGQUIT, SIG_DFL); 499} 500 501/* --- 27 unchanged lines hidden (view full) --- 529 case FIX: 530 return (ALTERED); 531 532 case NOFIX: 533 case IGNORE: 534 return (0); 535 536 default: |
537 errx(EEXIT, "UNKNOWN INODESC FIX MODE %d", idesc->id_fix); |
538 } 539 /* NOTREACHED */ |
540 return (0); |
541} 542 |
543#if __STDC__ 544#include <stdarg.h> 545#else 546#include <varargs.h> 547#endif |
548 549/* 550 * An unexpected inconsistency occured. 551 * Die if preening, otherwise just print message and continue. 552 */ |
553void |
554#if __STDC__ 555pfatal(const char *fmt, ...) 556#else 557pfatal(fmt, va_alist) 558 char *fmt; 559 va_dcl 560#endif |
561{ |
562 va_list ap; |
563#if __STDC__ 564 va_start(ap, fmt); 565#else 566 va_start(ap); 567#endif 568 if (!preen) { 569 (void)vfprintf(stderr, fmt, ap); 570 va_end(ap); 571 return; |
572 } |
573 (void)fprintf(stderr, "%s: ", cdevname); 574 (void)vfprintf(stderr, fmt, ap); 575 (void)fprintf(stderr, 576 "\n%s: UNEXPECTED INCONSISTENCY; RUN fsck MANUALLY.\n", 577 cdevname); 578 exit(EEXIT); |
579} 580 581/* 582 * Pwarn just prints a message when not preening, 583 * or a warning (preceded by filename) when preening. 584 */ |
585void |
586#if __STDC__ 587pwarn(const char *fmt, ...) 588#else 589pwarn(fmt, va_alist) 590 char *fmt; 591 va_dcl 592#endif |
593{ 594 va_list ap; |
595#if __STDC__ 596 va_start(ap, fmt); 597#else 598 va_start(ap); 599#endif |
600 if (preen) |
601 (void)fprintf(stderr, "%s: ", cdevname); 602 (void)vfprintf(stderr, fmt, ap); |
603 va_end(ap); 604} 605 |
606/* 607 * Stub for routines from kernel. 608 */ 609void |
610#if __STDC__ |
611panic(const char *fmt, ...) 612#else 613panic(fmt, va_alist) 614 char *fmt; |
615 va_dcl |
616#endif 617{ |
618 va_list ap; 619#if __STDC__ 620 va_start(ap, fmt); 621#else 622 va_start(ap); 623#endif |
624 pfatal("INTERNAL INCONSISTENCY:"); |
625 (void)vfprintf(stderr, fmt, ap); 626 va_end(ap); 627 exit(EEXIT); |
628} |