fsutil.c revision 129401
1222301Sadrian/* 2222301Sadrian * Copyright (c) 1980, 1986, 1993 3222301Sadrian * The Regents of the University of California. All rights reserved. 4222301Sadrian * 5222301Sadrian * Redistribution and use in source and binary forms, with or without 6222301Sadrian * modification, are permitted provided that the following conditions 7222301Sadrian * are met: 8222301Sadrian * 1. Redistributions of source code must retain the above copyright 9222301Sadrian * notice, this list of conditions and the following disclaimer. 10222301Sadrian * 2. Redistributions in binary form must reproduce the above copyright 11222301Sadrian * notice, this list of conditions and the following disclaimer in the 12222301Sadrian * documentation and/or other materials provided with the distribution. 13222301Sadrian * 4. Neither the name of the University nor the names of its contributors 14222301Sadrian * may be used to endorse or promote products derived from this software 15222301Sadrian * without specific prior written permission. 16222301Sadrian * 17222301Sadrian * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18222301Sadrian * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19222301Sadrian * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20222301Sadrian * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21222301Sadrian * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22222301Sadrian * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23222301Sadrian * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24222301Sadrian * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25222301Sadrian * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26222301Sadrian * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27222301Sadrian * SUCH DAMAGE. 28222301Sadrian */ 29222301Sadrian 30222301Sadrian#if 0 31222301Sadrian#ifndef lint 32222301Sadrianstatic const char sccsid[] = "@(#)utilities.c 8.6 (Berkeley) 5/19/95"; 33222301Sadrian#endif /* not lint */ 34222301Sadrian#endif 35222301Sadrian#include <sys/cdefs.h> 36222308Sadrian__FBSDID("$FreeBSD: head/sbin/fsck_ffs/fsutil.c 129401 2004-05-18 19:51:41Z scottl $"); 37222301Sadrian 38222301Sadrian#include <sys/param.h> 39222308Sadrian#include <sys/time.h> 40222308Sadrian#include <sys/types.h> 41222308Sadrian#include <sys/sysctl.h> 42222308Sadrian#include <sys/disklabel.h> 43222308Sadrian#include <sys/stat.h> 44222308Sadrian#include <sys/disklabel.h> 45222308Sadrian 46222308Sadrian#include <ufs/ufs/dinode.h> 47222308Sadrian#include <ufs/ufs/dir.h> 48222308Sadrian#include <ufs/ffs/fs.h> 49222308Sadrian 50222308Sadrian#include <err.h> 51222308Sadrian#include <errno.h> 52222308Sadrian#include <string.h> 53222308Sadrian#include <ctype.h> 54222308Sadrian#include <fstab.h> 55222308Sadrian#include <stdint.h> 56222308Sadrian#include <stdio.h> 57222308Sadrian#include <stdlib.h> 58222308Sadrian#include <unistd.h> 59222308Sadrian 60222308Sadrian#include "fsck.h" 61222308Sadrian 62222308Sadrianstatic void slowio_start(void); 63222308Sadrianstatic void slowio_end(void); 64222308Sadrian 65222308Sadrianlong diskreads, totalreads; /* Disk cache statistics */ 66222308Sadrianstruct timeval slowio_starttime; 67222308Sadrianint slowio_delay_usec = 10000; /* Initial IO delay for background fsck */ 68222308Sadrianint slowio_pollcnt; 69222308Sadrian 70222308Sadrianint 71222308Sadrianftypeok(union dinode *dp) 72222308Sadrian{ 73222308Sadrian switch (DIP(dp, di_mode) & IFMT) { 74222308Sadrian 75222308Sadrian case IFDIR: 76222308Sadrian case IFREG: 77222308Sadrian case IFBLK: 78222308Sadrian case IFCHR: 79222308Sadrian case IFLNK: 80222308Sadrian case IFSOCK: 81222308Sadrian case IFIFO: 82222308Sadrian return (1); 83222308Sadrian 84222308Sadrian default: 85222308Sadrian if (debug) 86222308Sadrian printf("bad file type 0%o\n", DIP(dp, di_mode)); 87222308Sadrian return (0); 88222308Sadrian } 89222308Sadrian} 90222308Sadrian 91222308Sadrianint 92222308Sadrianreply(const char *question) 93222308Sadrian{ 94222308Sadrian int persevere; 95222308Sadrian char c; 96222308Sadrian 97222308Sadrian if (preen) 98222308Sadrian pfatal("INTERNAL ERROR: GOT TO reply()"); 99222308Sadrian persevere = !strcmp(question, "CONTINUE"); 100222308Sadrian printf("\n"); 101222308Sadrian if (!persevere && (nflag || (fswritefd < 0 && bkgrdflag == 0))) { 102222308Sadrian printf("%s? no\n\n", question); 103222308Sadrian resolved = 0; 104222308Sadrian return (0); 105222308Sadrian } 106222308Sadrian if (yflag || (persevere && nflag)) { 107222308Sadrian printf("%s? yes\n\n", question); 108222308Sadrian return (1); 109222308Sadrian } 110222308Sadrian do { 111222308Sadrian printf("%s? [yn] ", question); 112222308Sadrian (void) fflush(stdout); 113222308Sadrian c = getc(stdin); 114222310Sadrian while (c != '\n' && getc(stdin) != '\n') { 115222310Sadrian if (feof(stdin)) { 116222310Sadrian resolved = 0; 117222310Sadrian return (0); 118222310Sadrian } 119222310Sadrian } 120222310Sadrian } while (c != 'y' && c != 'Y' && c != 'n' && c != 'N'); 121222310Sadrian printf("\n"); 122222310Sadrian if (c == 'y' || c == 'Y') 123222310Sadrian return (1); 124222310Sadrian resolved = 0; 125222310Sadrian return (0); 126222310Sadrian} 127222310Sadrian 128222310Sadrian/* 129222310Sadrian * Look up state information for an inode. 130222310Sadrian */ 131222310Sadrianstruct inostat * 132222310Sadrianinoinfo(ino_t inum) 133222310Sadrian{ 134222310Sadrian static struct inostat unallocated = { USTATE, 0, 0 }; 135222310Sadrian struct inostatlist *ilp; 136222310Sadrian int iloff; 137222310Sadrian 138222310Sadrian if (inum > maxino) 139222310Sadrian errx(EEXIT, "inoinfo: inumber %d out of range", inum); 140222310Sadrian ilp = &inostathead[inum / sblock.fs_ipg]; 141222310Sadrian iloff = inum % sblock.fs_ipg; 142222301Sadrian if (iloff >= ilp->il_numalloced) 143222301Sadrian return (&unallocated); 144222301Sadrian return (&ilp->il_stat[iloff]); 145222301Sadrian} 146222310Sadrian 147222310Sadrian/* 148222308Sadrian * Malloc buffers and set up cache. 149222310Sadrian */ 150222310Sadrianvoid 151222310Sadrianbufinit(void) 152222310Sadrian{ 153222310Sadrian struct bufarea *bp; 154222310Sadrian long bufcnt, i; 155222308Sadrian char *bufp; 156222310Sadrian 157222310Sadrian pbp = pdirbp = (struct bufarea *)0; 158222310Sadrian bufp = malloc((unsigned int)sblock.fs_bsize); 159222310Sadrian if (bufp == 0) 160222310Sadrian errx(EEXIT, "cannot allocate buffer pool"); 161222310Sadrian cgblk.b_un.b_buf = bufp; 162222310Sadrian initbarea(&cgblk); 163222310Sadrian bufhead.b_next = bufhead.b_prev = &bufhead; 164222310Sadrian bufcnt = MAXBUFSPACE / sblock.fs_bsize; 165222310Sadrian if (bufcnt < MINBUFS) 166222310Sadrian bufcnt = MINBUFS; 167222310Sadrian for (i = 0; i < bufcnt; i++) { 168222310Sadrian bp = (struct bufarea *)malloc(sizeof(struct bufarea)); 169222310Sadrian bufp = malloc((unsigned int)sblock.fs_bsize); 170222310Sadrian if (bp == NULL || bufp == NULL) { 171222310Sadrian if (i >= MINBUFS) 172222310Sadrian break; 173222310Sadrian errx(EEXIT, "cannot allocate buffer pool"); 174222310Sadrian } 175222310Sadrian bp->b_un.b_buf = bufp; 176222310Sadrian bp->b_prev = &bufhead; 177222308Sadrian bp->b_next = bufhead.b_next; 178222310Sadrian bufhead.b_next->b_prev = bp; 179222310Sadrian bufhead.b_next = bp; 180222310Sadrian initbarea(bp); 181222310Sadrian } 182222310Sadrian bufhead.b_size = i; /* save number of buffers */ 183222310Sadrian} 184222310Sadrian 185222310Sadrian/* 186222308Sadrian * Manage a cache of directory blocks. 187222310Sadrian */ 188222308Sadrianstruct bufarea * 189222308Sadriangetdatablk(ufs2_daddr_t blkno, long size) 190222310Sadrian{ 191222310Sadrian struct bufarea *bp; 192222310Sadrian 193222308Sadrian for (bp = bufhead.b_next; bp != &bufhead; bp = bp->b_next) 194222310Sadrian if (bp->b_bno == fsbtodb(&sblock, blkno)) 195222310Sadrian goto foundit; 196222308Sadrian for (bp = bufhead.b_prev; bp != &bufhead; bp = bp->b_prev) 197222310Sadrian if ((bp->b_flags & B_INUSE) == 0) 198222310Sadrian break; 199222310Sadrian if (bp == &bufhead) 200222308Sadrian errx(EEXIT, "deadlocked buffer pool"); 201222310Sadrian getblk(bp, blkno, size); 202222310Sadrian /* fall through */ 203222310Sadrianfoundit: 204222310Sadrian bp->b_prev->b_next = bp->b_next; 205222310Sadrian bp->b_next->b_prev = bp->b_prev; 206222310Sadrian bp->b_prev = &bufhead; 207222310Sadrian bp->b_next = bufhead.b_next; 208222310Sadrian bufhead.b_next->b_prev = bp; 209222310Sadrian bufhead.b_next = bp; 210222310Sadrian bp->b_flags |= B_INUSE; 211222310Sadrian return (bp); 212222310Sadrian} 213222310Sadrian 214222310Sadrianvoid 215222310Sadriangetblk(struct bufarea *bp, ufs2_daddr_t blk, long size) 216222310Sadrian{ 217222310Sadrian ufs2_daddr_t dblk; 218222310Sadrian 219222310Sadrian totalreads++; 220222310Sadrian dblk = fsbtodb(&sblock, blk); 221222310Sadrian if (bp->b_bno != dblk) { 222222310Sadrian flush(fswritefd, bp); 223222310Sadrian diskreads++; 224222310Sadrian bp->b_errs = bread(fsreadfd, bp->b_un.b_buf, dblk, size); 225222310Sadrian bp->b_bno = dblk; 226222310Sadrian bp->b_size = size; 227222310Sadrian } 228222310Sadrian} 229222310Sadrian 230222310Sadrianvoid 231222310Sadrianflush(int fd, struct bufarea *bp) 232222310Sadrian{ 233222310Sadrian int i, j; 234222310Sadrian 235222310Sadrian if (!bp->b_dirty) 236222310Sadrian return; 237222310Sadrian bp->b_dirty = 0; 238222310Sadrian if (fswritefd < 0) { 239222310Sadrian pfatal("WRITING IN READ_ONLY MODE.\n"); 240222310Sadrian return; 241222301Sadrian } 242222310Sadrian if (bp->b_errs != 0) 243222310Sadrian pfatal("WRITING %sZERO'ED BLOCK %lld TO DISK\n", 244222301Sadrian (bp->b_errs == bp->b_size / dev_bsize) ? "" : "PARTIALLY ", 245222301Sadrian (long long)bp->b_bno); 246222301Sadrian bp->b_errs = 0; 247222301Sadrian bwrite(fd, bp->b_un.b_buf, bp->b_bno, (long)bp->b_size); 248222301Sadrian if (bp != &sblk) 249222301Sadrian return; 250222301Sadrian for (i = 0, j = 0; i < sblock.fs_cssize; i += sblock.fs_bsize, j++) { 251222301Sadrian bwrite(fswritefd, (char *)sblock.fs_csp + i, 252222301Sadrian fsbtodb(&sblock, sblock.fs_csaddr + j * sblock.fs_frag), 253222301Sadrian sblock.fs_cssize - i < sblock.fs_bsize ? 254222301Sadrian sblock.fs_cssize - i : sblock.fs_bsize); 255222301Sadrian } 256222301Sadrian} 257222301Sadrian 258222301Sadrianvoid 259222301Sadrianrwerror(const char *mesg, ufs2_daddr_t blk) 260222301Sadrian{ 261222301Sadrian 262222301Sadrian if (bkgrdcheck) 263222301Sadrian exit(EEXIT); 264222301Sadrian if (preen == 0) 265222301Sadrian printf("\n"); 266222301Sadrian pfatal("CANNOT %s: %ld", mesg, (long)blk); 267222301Sadrian if (reply("CONTINUE") == 0) 268222301Sadrian exit(EEXIT); 269222301Sadrian} 270222301Sadrian 271222301Sadrianvoid 272222301Sadrianckfini(int markclean) 273222301Sadrian{ 274222301Sadrian struct bufarea *bp, *nbp; 275222301Sadrian int ofsmodified, cnt = 0; 276222301Sadrian 277222301Sadrian if (bkgrdflag) { 278222301Sadrian unlink(snapname); 279222301Sadrian if ((!(sblock.fs_flags & FS_UNCLEAN)) != markclean) { 280222301Sadrian cmd.value = FS_UNCLEAN; 281222301Sadrian cmd.size = markclean ? -1 : 1; 282222301Sadrian if (sysctlbyname("vfs.ffs.setflags", 0, 0, 283222301Sadrian &cmd, sizeof cmd) == -1) 284222301Sadrian rwerror("SET FILE SYSTEM FLAGS", FS_UNCLEAN); 285222301Sadrian if (!preen) { 286222301Sadrian printf("\n***** FILE SYSTEM MARKED %s *****\n", 287222301Sadrian markclean ? "CLEAN" : "DIRTY"); 288222301Sadrian if (!markclean) 289222301Sadrian rerun = 1; 290222301Sadrian } 291222301Sadrian } else if (!preen && !markclean) { 292222301Sadrian printf("\n***** FILE SYSTEM STILL DIRTY *****\n"); 293222301Sadrian rerun = 1; 294222301Sadrian } 295222301Sadrian } 296222301Sadrian if (fswritefd < 0) { 297222301Sadrian (void)close(fsreadfd); 298222301Sadrian return; 299222301Sadrian } 300222301Sadrian flush(fswritefd, &sblk); 301222301Sadrian if (havesb && cursnapshot == 0 && sblock.fs_magic == FS_UFS2_MAGIC && 302222301Sadrian sblk.b_bno != sblock.fs_sblockloc / dev_bsize && 303222301Sadrian !preen && reply("UPDATE STANDARD SUPERBLOCK")) { 304222301Sadrian sblk.b_bno = sblock.fs_sblockloc / dev_bsize; 305222301Sadrian sbdirty(); 306222301Sadrian flush(fswritefd, &sblk); 307222301Sadrian } 308222301Sadrian flush(fswritefd, &cgblk); 309222301Sadrian free(cgblk.b_un.b_buf); 310222301Sadrian for (bp = bufhead.b_prev; bp && bp != &bufhead; bp = nbp) { 311222301Sadrian cnt++; 312222301Sadrian flush(fswritefd, bp); 313222301Sadrian nbp = bp->b_prev; 314222301Sadrian free(bp->b_un.b_buf); 315222301Sadrian free((char *)bp); 316222301Sadrian } 317222301Sadrian if (bufhead.b_size != cnt) 318222301Sadrian errx(EEXIT, "panic: lost %d buffers", bufhead.b_size - cnt); 319222301Sadrian pbp = pdirbp = (struct bufarea *)0; 320222301Sadrian if (cursnapshot == 0 && sblock.fs_clean != markclean) { 321222301Sadrian if ((sblock.fs_clean = markclean) != 0) { 322222301Sadrian sblock.fs_flags &= ~(FS_UNCLEAN | FS_NEEDSFSCK); 323222301Sadrian sblock.fs_pendingblocks = 0; 324222301Sadrian sblock.fs_pendinginodes = 0; 325222301Sadrian } 326222301Sadrian sbdirty(); 327222301Sadrian ofsmodified = fsmodified; 328222301Sadrian flush(fswritefd, &sblk); 329222301Sadrian fsmodified = ofsmodified; 330222301Sadrian if (!preen) { 331222301Sadrian printf("\n***** FILE SYSTEM MARKED %s *****\n", 332222301Sadrian markclean ? "CLEAN" : "DIRTY"); 333222301Sadrian if (!markclean) 334222301Sadrian rerun = 1; 335222301Sadrian } 336222301Sadrian } else if (!preen && !markclean) { 337222301Sadrian printf("\n***** FILE SYSTEM STILL DIRTY *****\n"); 338222301Sadrian rerun = 1; 339222301Sadrian } 340222301Sadrian if (debug && totalreads > 0) 341222301Sadrian printf("cache missed %ld of %ld (%d%%)\n", diskreads, 342222301Sadrian totalreads, (int)(diskreads * 100 / totalreads)); 343222301Sadrian (void)close(fsreadfd); 344222301Sadrian (void)close(fswritefd); 345222301Sadrian} 346222301Sadrian 347222301Sadrianint 348222301Sadrianbread(int fd, char *buf, ufs2_daddr_t blk, long size) 349222301Sadrian{ 350222301Sadrian char *cp; 351222301Sadrian int i, errs; 352222301Sadrian off_t offset; 353222301Sadrian 354222301Sadrian offset = blk; 355222301Sadrian offset *= dev_bsize; 356222301Sadrian if (bkgrdflag) 357222301Sadrian slowio_start(); 358222301Sadrian if (lseek(fd, offset, 0) < 0) 359222301Sadrian rwerror("SEEK BLK", blk); 360222301Sadrian else if (read(fd, buf, (int)size) == size) { 361222301Sadrian if (bkgrdflag) 362222301Sadrian slowio_end(); 363222301Sadrian return (0); 364222301Sadrian } 365222301Sadrian rwerror("READ BLK", blk); 366222301Sadrian if (lseek(fd, offset, 0) < 0) 367222301Sadrian rwerror("SEEK BLK", blk); 368222301Sadrian errs = 0; 369222301Sadrian memset(buf, 0, (size_t)size); 370222301Sadrian printf("THE FOLLOWING DISK SECTORS COULD NOT BE READ:"); 371222301Sadrian for (cp = buf, i = 0; i < size; i += secsize, cp += secsize) { 372222301Sadrian if (read(fd, cp, (int)secsize) != secsize) { 373222301Sadrian (void)lseek(fd, offset + i + secsize, 0); 374222301Sadrian if (secsize != dev_bsize && dev_bsize != 1) 375222301Sadrian printf(" %jd (%jd),", 376222301Sadrian (intmax_t)(blk * dev_bsize + i) / secsize, 377222301Sadrian (intmax_t)blk + i / dev_bsize); 378222301Sadrian else 379222301Sadrian printf(" %jd,", (intmax_t)blk + i / dev_bsize); 380222301Sadrian errs++; 381222301Sadrian } 382222301Sadrian } 383222301Sadrian printf("\n"); 384222301Sadrian if (errs) 385222301Sadrian resolved = 0; 386222301Sadrian return (errs); 387} 388 389void 390bwrite(int fd, char *buf, ufs2_daddr_t blk, long size) 391{ 392 int i; 393 char *cp; 394 off_t offset; 395 396 if (fd < 0) 397 return; 398 offset = blk; 399 offset *= dev_bsize; 400 if (lseek(fd, offset, 0) < 0) 401 rwerror("SEEK BLK", blk); 402 else if (write(fd, buf, (int)size) == size) { 403 fsmodified = 1; 404 return; 405 } 406 resolved = 0; 407 rwerror("WRITE BLK", blk); 408 if (lseek(fd, offset, 0) < 0) 409 rwerror("SEEK BLK", blk); 410 printf("THE FOLLOWING SECTORS COULD NOT BE WRITTEN:"); 411 for (cp = buf, i = 0; i < size; i += dev_bsize, cp += dev_bsize) 412 if (write(fd, cp, (int)dev_bsize) != dev_bsize) { 413 (void)lseek(fd, offset + i + dev_bsize, 0); 414 printf(" %jd,", (intmax_t)blk + i / dev_bsize); 415 } 416 printf("\n"); 417 return; 418} 419 420/* 421 * allocate a data block with the specified number of fragments 422 */ 423ufs2_daddr_t 424allocblk(long frags) 425{ 426 int i, j, k, cg, baseblk; 427 struct cg *cgp = &cgrp; 428 429 if (frags <= 0 || frags > sblock.fs_frag) 430 return (0); 431 for (i = 0; i < maxfsblock - sblock.fs_frag; i += sblock.fs_frag) { 432 for (j = 0; j <= sblock.fs_frag - frags; j++) { 433 if (testbmap(i + j)) 434 continue; 435 for (k = 1; k < frags; k++) 436 if (testbmap(i + j + k)) 437 break; 438 if (k < frags) { 439 j += k; 440 continue; 441 } 442 cg = dtog(&sblock, i + j); 443 getblk(&cgblk, cgtod(&sblock, cg), sblock.fs_cgsize); 444 if (!cg_chkmagic(cgp)) 445 pfatal("CG %d: BAD MAGIC NUMBER\n", cg); 446 baseblk = dtogd(&sblock, i + j); 447 for (k = 0; k < frags; k++) { 448 setbmap(i + j + k); 449 clrbit(cg_blksfree(cgp), baseblk + k); 450 } 451 n_blks += frags; 452 if (frags == sblock.fs_frag) 453 cgp->cg_cs.cs_nbfree--; 454 else 455 cgp->cg_cs.cs_nffree -= frags; 456 cgdirty(); 457 return (i + j); 458 } 459 } 460 return (0); 461} 462 463/* 464 * Free a previously allocated block 465 */ 466void 467freeblk(ufs2_daddr_t blkno, long frags) 468{ 469 struct inodesc idesc; 470 471 idesc.id_blkno = blkno; 472 idesc.id_numfrags = frags; 473 (void)pass4check(&idesc); 474} 475 476/* Slow down IO so as to leave some disk bandwidth for other processes */ 477void 478slowio_start() 479{ 480 481 /* Delay one in every 8 operations */ 482 slowio_pollcnt = (slowio_pollcnt + 1) & 7; 483 if (slowio_pollcnt == 0) { 484 gettimeofday(&slowio_starttime, NULL); 485 } 486} 487 488void 489slowio_end() 490{ 491 struct timeval tv; 492 int delay_usec; 493 494 if (slowio_pollcnt != 0) 495 return; 496 497 /* Update the slowdown interval. */ 498 gettimeofday(&tv, NULL); 499 delay_usec = (tv.tv_sec - slowio_starttime.tv_sec) * 1000000 + 500 (tv.tv_usec - slowio_starttime.tv_usec); 501 if (delay_usec < 64) 502 delay_usec = 64; 503 if (delay_usec > 2500000) 504 delay_usec = 2500000; 505 slowio_delay_usec = (slowio_delay_usec * 63 + delay_usec) >> 6; 506 /* delay by 8 times the average IO delay */ 507 if (slowio_delay_usec > 64) 508 usleep(slowio_delay_usec * 8); 509} 510 511/* 512 * Find a pathname 513 */ 514void 515getpathname(char *namebuf, ino_t curdir, ino_t ino) 516{ 517 int len; 518 char *cp; 519 struct inodesc idesc; 520 static int busy = 0; 521 522 if (curdir == ino && ino == ROOTINO) { 523 (void)strcpy(namebuf, "/"); 524 return; 525 } 526 if (busy || 527 (inoinfo(curdir)->ino_state != DSTATE && 528 inoinfo(curdir)->ino_state != DFOUND)) { 529 (void)strcpy(namebuf, "?"); 530 return; 531 } 532 busy = 1; 533 memset(&idesc, 0, sizeof(struct inodesc)); 534 idesc.id_type = DATA; 535 idesc.id_fix = IGNORE; 536 cp = &namebuf[MAXPATHLEN - 1]; 537 *cp = '\0'; 538 if (curdir != ino) { 539 idesc.id_parent = curdir; 540 goto namelookup; 541 } 542 while (ino != ROOTINO) { 543 idesc.id_number = ino; 544 idesc.id_func = findino; 545 idesc.id_name = strdup(".."); 546 if ((ckinode(ginode(ino), &idesc) & FOUND) == 0) 547 break; 548 namelookup: 549 idesc.id_number = idesc.id_parent; 550 idesc.id_parent = ino; 551 idesc.id_func = findname; 552 idesc.id_name = namebuf; 553 if ((ckinode(ginode(idesc.id_number), &idesc)&FOUND) == 0) 554 break; 555 len = strlen(namebuf); 556 cp -= len; 557 memmove(cp, namebuf, (size_t)len); 558 *--cp = '/'; 559 if (cp < &namebuf[MAXNAMLEN]) 560 break; 561 ino = idesc.id_number; 562 } 563 busy = 0; 564 if (ino != ROOTINO) 565 *--cp = '?'; 566 memmove(namebuf, cp, (size_t)(&namebuf[MAXPATHLEN] - cp)); 567} 568 569void 570catch(int sig __unused) 571{ 572 573 ckfini(0); 574 exit(12); 575} 576 577/* 578 * When preening, allow a single quit to signal 579 * a special exit after file system checks complete 580 * so that reboot sequence may be interrupted. 581 */ 582void 583catchquit(int sig __unused) 584{ 585 printf("returning to single-user after file system check\n"); 586 returntosingle = 1; 587 (void)signal(SIGQUIT, SIG_DFL); 588} 589 590/* 591 * determine whether an inode should be fixed. 592 */ 593int 594dofix(struct inodesc *idesc, const char *msg) 595{ 596 597 switch (idesc->id_fix) { 598 599 case DONTKNOW: 600 if (idesc->id_type == DATA) 601 direrror(idesc->id_number, msg); 602 else 603 pwarn("%s", msg); 604 if (preen) { 605 printf(" (SALVAGED)\n"); 606 idesc->id_fix = FIX; 607 return (ALTERED); 608 } 609 if (reply("SALVAGE") == 0) { 610 idesc->id_fix = NOFIX; 611 return (0); 612 } 613 idesc->id_fix = FIX; 614 return (ALTERED); 615 616 case FIX: 617 return (ALTERED); 618 619 case NOFIX: 620 case IGNORE: 621 return (0); 622 623 default: 624 errx(EEXIT, "UNKNOWN INODESC FIX MODE %d", idesc->id_fix); 625 } 626 /* NOTREACHED */ 627 return (0); 628} 629 630#include <stdarg.h> 631 632/* 633 * An unexpected inconsistency occured. 634 * Die if preening or file system is running with soft dependency protocol, 635 * otherwise just print message and continue. 636 */ 637void 638pfatal(const char *fmt, ...) 639{ 640 va_list ap; 641 va_start(ap, fmt); 642 if (!preen) { 643 (void)vfprintf(stdout, fmt, ap); 644 va_end(ap); 645 if (usedsoftdep) 646 (void)fprintf(stdout, 647 "\nUNEXPECTED SOFT UPDATE INCONSISTENCY\n"); 648 /* 649 * Force foreground fsck to clean up inconsistency. 650 */ 651 if (bkgrdflag) { 652 cmd.value = FS_NEEDSFSCK; 653 cmd.size = 1; 654 if (sysctlbyname("vfs.ffs.setflags", 0, 0, 655 &cmd, sizeof cmd) == -1) 656 pwarn("CANNOT SET FS_NEEDSFSCK FLAG\n"); 657 fprintf(stdout, "CANNOT RUN IN BACKGROUND\n"); 658 ckfini(0); 659 exit(EEXIT); 660 } 661 return; 662 } 663 if (cdevname == NULL) 664 cdevname = strdup("fsck"); 665 (void)fprintf(stdout, "%s: ", cdevname); 666 (void)vfprintf(stdout, fmt, ap); 667 (void)fprintf(stdout, 668 "\n%s: UNEXPECTED%sINCONSISTENCY; RUN fsck MANUALLY.\n", 669 cdevname, usedsoftdep ? " SOFT UPDATE " : " "); 670 /* 671 * Force foreground fsck to clean up inconsistency. 672 */ 673 if (bkgrdflag) { 674 cmd.value = FS_NEEDSFSCK; 675 cmd.size = 1; 676 if (sysctlbyname("vfs.ffs.setflags", 0, 0, 677 &cmd, sizeof cmd) == -1) 678 pwarn("CANNOT SET FS_NEEDSFSCK FLAG\n"); 679 } 680 ckfini(0); 681 exit(EEXIT); 682} 683 684/* 685 * Pwarn just prints a message when not preening or running soft dependency 686 * protocol, or a warning (preceded by filename) when preening. 687 */ 688void 689pwarn(const char *fmt, ...) 690{ 691 va_list ap; 692 va_start(ap, fmt); 693 if (preen) 694 (void)fprintf(stdout, "%s: ", cdevname); 695 (void)vfprintf(stdout, fmt, ap); 696 va_end(ap); 697} 698 699/* 700 * Stub for routines from kernel. 701 */ 702void 703panic(const char *fmt, ...) 704{ 705 va_list ap; 706 va_start(ap, fmt); 707 pfatal("INTERNAL INCONSISTENCY:"); 708 (void)vfprintf(stdout, fmt, ap); 709 va_end(ap); 710 exit(EEXIT); 711} 712