fsutil.c revision 136281
166864Sadrian/* 266864Sadrian * Copyright (c) 1980, 1986, 1993 366864Sadrian * The Regents of the University of California. All rights reserved. 466864Sadrian * 566864Sadrian * Redistribution and use in source and binary forms, with or without 666864Sadrian * modification, are permitted provided that the following conditions 766864Sadrian * are met: 866864Sadrian * 1. Redistributions of source code must retain the above copyright 966864Sadrian * notice, this list of conditions and the following disclaimer. 1066864Sadrian * 2. Redistributions in binary form must reproduce the above copyright 1166864Sadrian * notice, this list of conditions and the following disclaimer in the 1266864Sadrian * documentation and/or other materials provided with the distribution. 1366864Sadrian * 4. Neither the name of the University nor the names of its contributors 1466864Sadrian * may be used to endorse or promote products derived from this software 1566864Sadrian * without specific prior written permission. 1666864Sadrian * 1766864Sadrian * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 1866864Sadrian * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1966864Sadrian * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2066864Sadrian * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2166864Sadrian * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2266864Sadrian * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2366864Sadrian * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2466864Sadrian * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2566864Sadrian * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2666864Sadrian * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2766864Sadrian * SUCH DAMAGE. 2866864Sadrian */ 2966864Sadrian 30114589Sobrien#if 0 3166864Sadrian#ifndef lint 3266864Sadrianstatic const char sccsid[] = "@(#)utilities.c 8.6 (Berkeley) 5/19/95"; 33114589Sobrien#endif /* not lint */ 3466864Sadrian#endif 35114589Sobrien#include <sys/cdefs.h> 36114589Sobrien__FBSDID("$FreeBSD: head/sbin/fsck_ffs/fsutil.c 136281 2004-10-08 20:44:47Z truckman $"); 3766864Sadrian 3866864Sadrian#include <sys/param.h> 39107671Siedowse#include <sys/time.h> 4066864Sadrian#include <sys/types.h> 4186514Siedowse#include <sys/sysctl.h> 4298542Smckusick#include <sys/disklabel.h> 4366864Sadrian#include <sys/stat.h> 4496475Sphk#include <sys/disklabel.h> 4566864Sadrian 4666864Sadrian#include <ufs/ufs/dinode.h> 4766864Sadrian#include <ufs/ufs/dir.h> 4866864Sadrian#include <ufs/ffs/fs.h> 4966864Sadrian 5066864Sadrian#include <err.h> 5166864Sadrian#include <errno.h> 5266864Sadrian#include <string.h> 5366864Sadrian#include <ctype.h> 5466864Sadrian#include <fstab.h> 55101037Smux#include <stdint.h> 5666864Sadrian#include <stdio.h> 5766864Sadrian#include <stdlib.h> 5866864Sadrian#include <unistd.h> 5966864Sadrian 6066864Sadrian#include "fsck.h" 6166864Sadrian 62107671Siedowsestatic void slowio_start(void); 63107671Siedowsestatic void slowio_end(void); 64107671Siedowse 6566864Sadrianlong diskreads, totalreads; /* Disk cache statistics */ 66107671Siedowsestruct timeval slowio_starttime; 67107671Siedowseint slowio_delay_usec = 10000; /* Initial IO delay for background fsck */ 68107671Siedowseint slowio_pollcnt; 6966864Sadrian 7066864Sadrianint 7198542Smckusickftypeok(union dinode *dp) 7266864Sadrian{ 7398542Smckusick switch (DIP(dp, di_mode) & IFMT) { 7466864Sadrian 7566864Sadrian case IFDIR: 7666864Sadrian case IFREG: 7766864Sadrian case IFBLK: 7866864Sadrian case IFCHR: 7966864Sadrian case IFLNK: 8066864Sadrian case IFSOCK: 8166864Sadrian case IFIFO: 8266864Sadrian return (1); 8366864Sadrian 8466864Sadrian default: 8566864Sadrian if (debug) 8698542Smckusick printf("bad file type 0%o\n", DIP(dp, di_mode)); 8766864Sadrian return (0); 8866864Sadrian } 8966864Sadrian} 9066864Sadrian 9166864Sadrianint 92100935Sphkreply(const char *question) 9366864Sadrian{ 9466864Sadrian int persevere; 9566864Sadrian char c; 9666864Sadrian 9766864Sadrian if (preen) 9866864Sadrian pfatal("INTERNAL ERROR: GOT TO reply()"); 9966864Sadrian persevere = !strcmp(question, "CONTINUE"); 10066864Sadrian printf("\n"); 10174556Smckusick if (!persevere && (nflag || (fswritefd < 0 && bkgrdflag == 0))) { 10266864Sadrian printf("%s? no\n\n", question); 10366864Sadrian resolved = 0; 10466864Sadrian return (0); 10566864Sadrian } 10666864Sadrian if (yflag || (persevere && nflag)) { 10766864Sadrian printf("%s? yes\n\n", question); 10866864Sadrian return (1); 10966864Sadrian } 11066864Sadrian do { 11166864Sadrian printf("%s? [yn] ", question); 11266864Sadrian (void) fflush(stdout); 11366864Sadrian c = getc(stdin); 11466864Sadrian while (c != '\n' && getc(stdin) != '\n') { 11566864Sadrian if (feof(stdin)) { 11666864Sadrian resolved = 0; 11766864Sadrian return (0); 11866864Sadrian } 11966864Sadrian } 12066864Sadrian } while (c != 'y' && c != 'Y' && c != 'n' && c != 'N'); 12166864Sadrian printf("\n"); 12266864Sadrian if (c == 'y' || c == 'Y') 12366864Sadrian return (1); 12466864Sadrian resolved = 0; 12566864Sadrian return (0); 12666864Sadrian} 12766864Sadrian 12866864Sadrian/* 12966864Sadrian * Look up state information for an inode. 13066864Sadrian */ 13166864Sadrianstruct inostat * 13292839Simpinoinfo(ino_t inum) 13366864Sadrian{ 13466864Sadrian static struct inostat unallocated = { USTATE, 0, 0 }; 13566864Sadrian struct inostatlist *ilp; 13666864Sadrian int iloff; 13766864Sadrian 13866864Sadrian if (inum > maxino) 13966864Sadrian errx(EEXIT, "inoinfo: inumber %d out of range", inum); 14066864Sadrian ilp = &inostathead[inum / sblock.fs_ipg]; 14166864Sadrian iloff = inum % sblock.fs_ipg; 14266864Sadrian if (iloff >= ilp->il_numalloced) 14366864Sadrian return (&unallocated); 14466864Sadrian return (&ilp->il_stat[iloff]); 14566864Sadrian} 14666864Sadrian 14766864Sadrian/* 14866864Sadrian * Malloc buffers and set up cache. 14966864Sadrian */ 15066864Sadrianvoid 15192839Simpbufinit(void) 15266864Sadrian{ 15392806Sobrien struct bufarea *bp; 15466864Sadrian long bufcnt, i; 15566864Sadrian char *bufp; 15666864Sadrian 15766864Sadrian pbp = pdirbp = (struct bufarea *)0; 15866864Sadrian bufp = malloc((unsigned int)sblock.fs_bsize); 15966864Sadrian if (bufp == 0) 16066864Sadrian errx(EEXIT, "cannot allocate buffer pool"); 16166864Sadrian cgblk.b_un.b_buf = bufp; 16266864Sadrian initbarea(&cgblk); 16366864Sadrian bufhead.b_next = bufhead.b_prev = &bufhead; 16466864Sadrian bufcnt = MAXBUFSPACE / sblock.fs_bsize; 16566864Sadrian if (bufcnt < MINBUFS) 16666864Sadrian bufcnt = MINBUFS; 16766864Sadrian for (i = 0; i < bufcnt; i++) { 16866864Sadrian bp = (struct bufarea *)malloc(sizeof(struct bufarea)); 16966864Sadrian bufp = malloc((unsigned int)sblock.fs_bsize); 17066864Sadrian if (bp == NULL || bufp == NULL) { 17166864Sadrian if (i >= MINBUFS) 17266864Sadrian break; 17366864Sadrian errx(EEXIT, "cannot allocate buffer pool"); 17466864Sadrian } 17566864Sadrian bp->b_un.b_buf = bufp; 17666864Sadrian bp->b_prev = &bufhead; 17766864Sadrian bp->b_next = bufhead.b_next; 17866864Sadrian bufhead.b_next->b_prev = bp; 17966864Sadrian bufhead.b_next = bp; 18066864Sadrian initbarea(bp); 18166864Sadrian } 18266864Sadrian bufhead.b_size = i; /* save number of buffers */ 18366864Sadrian} 18466864Sadrian 18566864Sadrian/* 18666864Sadrian * Manage a cache of directory blocks. 18766864Sadrian */ 18866864Sadrianstruct bufarea * 18998542Smckusickgetdatablk(ufs2_daddr_t blkno, long size) 19066864Sadrian{ 19192806Sobrien struct bufarea *bp; 19266864Sadrian 19366864Sadrian for (bp = bufhead.b_next; bp != &bufhead; bp = bp->b_next) 19466864Sadrian if (bp->b_bno == fsbtodb(&sblock, blkno)) 19566864Sadrian goto foundit; 19666864Sadrian for (bp = bufhead.b_prev; bp != &bufhead; bp = bp->b_prev) 19766864Sadrian if ((bp->b_flags & B_INUSE) == 0) 19866864Sadrian break; 19966864Sadrian if (bp == &bufhead) 20066864Sadrian errx(EEXIT, "deadlocked buffer pool"); 20166864Sadrian getblk(bp, blkno, size); 20266864Sadrian /* fall through */ 20366864Sadrianfoundit: 20466864Sadrian bp->b_prev->b_next = bp->b_next; 20566864Sadrian bp->b_next->b_prev = bp->b_prev; 20666864Sadrian bp->b_prev = &bufhead; 20766864Sadrian bp->b_next = bufhead.b_next; 20866864Sadrian bufhead.b_next->b_prev = bp; 20966864Sadrian bufhead.b_next = bp; 21066864Sadrian bp->b_flags |= B_INUSE; 21166864Sadrian return (bp); 21266864Sadrian} 21366864Sadrian 21466864Sadrianvoid 21598542Smckusickgetblk(struct bufarea *bp, ufs2_daddr_t blk, long size) 21666864Sadrian{ 21798542Smckusick ufs2_daddr_t dblk; 21866864Sadrian 21995897Smckusick totalreads++; 22066864Sadrian dblk = fsbtodb(&sblock, blk); 22166864Sadrian if (bp->b_bno != dblk) { 22266864Sadrian flush(fswritefd, bp); 22366864Sadrian diskreads++; 22466864Sadrian bp->b_errs = bread(fsreadfd, bp->b_un.b_buf, dblk, size); 22566864Sadrian bp->b_bno = dblk; 22666864Sadrian bp->b_size = size; 22766864Sadrian } 22866864Sadrian} 22966864Sadrian 23066864Sadrianvoid 23192839Simpflush(int fd, struct bufarea *bp) 23266864Sadrian{ 23392806Sobrien int i, j; 23466864Sadrian 23566864Sadrian if (!bp->b_dirty) 23666864Sadrian return; 23774556Smckusick bp->b_dirty = 0; 23874556Smckusick if (fswritefd < 0) { 23974556Smckusick pfatal("WRITING IN READ_ONLY MODE.\n"); 24074556Smckusick return; 24174556Smckusick } 24266864Sadrian if (bp->b_errs != 0) 243100935Sphk pfatal("WRITING %sZERO'ED BLOCK %lld TO DISK\n", 24466864Sadrian (bp->b_errs == bp->b_size / dev_bsize) ? "" : "PARTIALLY ", 245100935Sphk (long long)bp->b_bno); 24666864Sadrian bp->b_errs = 0; 24766864Sadrian bwrite(fd, bp->b_un.b_buf, bp->b_bno, (long)bp->b_size); 24866864Sadrian if (bp != &sblk) 24966864Sadrian return; 25066864Sadrian for (i = 0, j = 0; i < sblock.fs_cssize; i += sblock.fs_bsize, j++) { 25171073Siedowse bwrite(fswritefd, (char *)sblock.fs_csp + i, 25266864Sadrian fsbtodb(&sblock, sblock.fs_csaddr + j * sblock.fs_frag), 25366864Sadrian sblock.fs_cssize - i < sblock.fs_bsize ? 25466864Sadrian sblock.fs_cssize - i : sblock.fs_bsize); 25566864Sadrian } 25666864Sadrian} 25766864Sadrian 25874556Smckusickvoid 259100935Sphkrwerror(const char *mesg, ufs2_daddr_t blk) 26066864Sadrian{ 26166864Sadrian 26275927Smckusick if (bkgrdcheck) 26375927Smckusick exit(EEXIT); 26466864Sadrian if (preen == 0) 26566864Sadrian printf("\n"); 26686514Siedowse pfatal("CANNOT %s: %ld", mesg, (long)blk); 26766864Sadrian if (reply("CONTINUE") == 0) 26866864Sadrian exit(EEXIT); 26966864Sadrian} 27066864Sadrian 27166864Sadrianvoid 27292839Simpckfini(int markclean) 27366864Sadrian{ 27492806Sobrien struct bufarea *bp, *nbp; 27566864Sadrian int ofsmodified, cnt = 0; 27666864Sadrian 27774556Smckusick if (bkgrdflag) { 27874556Smckusick unlink(snapname); 27974556Smckusick if ((!(sblock.fs_flags & FS_UNCLEAN)) != markclean) { 28074556Smckusick cmd.value = FS_UNCLEAN; 28174556Smckusick cmd.size = markclean ? -1 : 1; 28274556Smckusick if (sysctlbyname("vfs.ffs.setflags", 0, 0, 28374556Smckusick &cmd, sizeof cmd) == -1) 284118302Sru rwerror("SET FILE SYSTEM FLAGS", FS_UNCLEAN); 28574556Smckusick if (!preen) { 28674556Smckusick printf("\n***** FILE SYSTEM MARKED %s *****\n", 28774556Smckusick markclean ? "CLEAN" : "DIRTY"); 28874556Smckusick if (!markclean) 28974556Smckusick rerun = 1; 29074556Smckusick } 29174556Smckusick } else if (!preen && !markclean) { 29274556Smckusick printf("\n***** FILE SYSTEM STILL DIRTY *****\n"); 29374556Smckusick rerun = 1; 29474556Smckusick } 29574556Smckusick } 29666864Sadrian if (fswritefd < 0) { 29766864Sadrian (void)close(fsreadfd); 29866864Sadrian return; 29966864Sadrian } 30066864Sadrian flush(fswritefd, &sblk); 30198542Smckusick if (havesb && cursnapshot == 0 && sblock.fs_magic == FS_UFS2_MAGIC && 302107294Smckusick sblk.b_bno != sblock.fs_sblockloc / dev_bsize && 30366864Sadrian !preen && reply("UPDATE STANDARD SUPERBLOCK")) { 304107294Smckusick sblk.b_bno = sblock.fs_sblockloc / dev_bsize; 30566864Sadrian sbdirty(); 30666864Sadrian flush(fswritefd, &sblk); 30766864Sadrian } 30866864Sadrian flush(fswritefd, &cgblk); 30966864Sadrian free(cgblk.b_un.b_buf); 31066864Sadrian for (bp = bufhead.b_prev; bp && bp != &bufhead; bp = nbp) { 31166864Sadrian cnt++; 31266864Sadrian flush(fswritefd, bp); 31366864Sadrian nbp = bp->b_prev; 31466864Sadrian free(bp->b_un.b_buf); 31566864Sadrian free((char *)bp); 31666864Sadrian } 31766864Sadrian if (bufhead.b_size != cnt) 31866864Sadrian errx(EEXIT, "panic: lost %d buffers", bufhead.b_size - cnt); 31966864Sadrian pbp = pdirbp = (struct bufarea *)0; 32074556Smckusick if (cursnapshot == 0 && sblock.fs_clean != markclean) { 321105436Smckusick if ((sblock.fs_clean = markclean) != 0) { 32275557Smckusick sblock.fs_flags &= ~(FS_UNCLEAN | FS_NEEDSFSCK); 323105436Smckusick sblock.fs_pendingblocks = 0; 324105436Smckusick sblock.fs_pendinginodes = 0; 325105436Smckusick } 32666864Sadrian sbdirty(); 32766864Sadrian ofsmodified = fsmodified; 32866864Sadrian flush(fswritefd, &sblk); 32966864Sadrian fsmodified = ofsmodified; 33066864Sadrian if (!preen) { 33166864Sadrian printf("\n***** FILE SYSTEM MARKED %s *****\n", 33266864Sadrian markclean ? "CLEAN" : "DIRTY"); 33366864Sadrian if (!markclean) 33466864Sadrian rerun = 1; 33566864Sadrian } 33666864Sadrian } else if (!preen && !markclean) { 33766864Sadrian printf("\n***** FILE SYSTEM STILL DIRTY *****\n"); 33866864Sadrian rerun = 1; 33966864Sadrian } 34075557Smckusick if (debug && totalreads > 0) 34166864Sadrian printf("cache missed %ld of %ld (%d%%)\n", diskreads, 34266864Sadrian totalreads, (int)(diskreads * 100 / totalreads)); 34366864Sadrian (void)close(fsreadfd); 34466864Sadrian (void)close(fswritefd); 34566864Sadrian} 34666864Sadrian 34766864Sadrianint 34898542Smckusickbread(int fd, char *buf, ufs2_daddr_t blk, long size) 34966864Sadrian{ 35066864Sadrian char *cp; 35166864Sadrian int i, errs; 35266864Sadrian off_t offset; 35366864Sadrian 35466864Sadrian offset = blk; 35566864Sadrian offset *= dev_bsize; 356107671Siedowse if (bkgrdflag) 357107671Siedowse slowio_start(); 35866864Sadrian if (lseek(fd, offset, 0) < 0) 35974556Smckusick rwerror("SEEK BLK", blk); 360107671Siedowse else if (read(fd, buf, (int)size) == size) { 361107671Siedowse if (bkgrdflag) 362107671Siedowse slowio_end(); 36366864Sadrian return (0); 364107671Siedowse } 36574556Smckusick rwerror("READ BLK", blk); 36666864Sadrian if (lseek(fd, offset, 0) < 0) 36774556Smckusick rwerror("SEEK BLK", blk); 36866864Sadrian errs = 0; 36966864Sadrian memset(buf, 0, (size_t)size); 37066864Sadrian printf("THE FOLLOWING DISK SECTORS COULD NOT BE READ:"); 37166864Sadrian for (cp = buf, i = 0; i < size; i += secsize, cp += secsize) { 37266864Sadrian if (read(fd, cp, (int)secsize) != secsize) { 37366864Sadrian (void)lseek(fd, offset + i + secsize, 0); 37466864Sadrian if (secsize != dev_bsize && dev_bsize != 1) 375101037Smux printf(" %jd (%jd),", 376101037Smux (intmax_t)(blk * dev_bsize + i) / secsize, 377101037Smux (intmax_t)blk + i / dev_bsize); 37866864Sadrian else 379101037Smux printf(" %jd,", (intmax_t)blk + i / dev_bsize); 38066864Sadrian errs++; 38166864Sadrian } 38266864Sadrian } 38366864Sadrian printf("\n"); 38466864Sadrian if (errs) 38566864Sadrian resolved = 0; 38666864Sadrian return (errs); 38766864Sadrian} 38866864Sadrian 38966864Sadrianvoid 39098542Smckusickbwrite(int fd, char *buf, ufs2_daddr_t blk, long size) 39166864Sadrian{ 39266864Sadrian int i; 39366864Sadrian char *cp; 39466864Sadrian off_t offset; 39566864Sadrian 39666864Sadrian if (fd < 0) 39766864Sadrian return; 39866864Sadrian offset = blk; 39966864Sadrian offset *= dev_bsize; 40066864Sadrian if (lseek(fd, offset, 0) < 0) 40174556Smckusick rwerror("SEEK BLK", blk); 40266864Sadrian else if (write(fd, buf, (int)size) == size) { 40366864Sadrian fsmodified = 1; 40466864Sadrian return; 40566864Sadrian } 40666864Sadrian resolved = 0; 40774556Smckusick rwerror("WRITE BLK", blk); 40866864Sadrian if (lseek(fd, offset, 0) < 0) 40974556Smckusick rwerror("SEEK BLK", blk); 41066864Sadrian printf("THE FOLLOWING SECTORS COULD NOT BE WRITTEN:"); 41166864Sadrian for (cp = buf, i = 0; i < size; i += dev_bsize, cp += dev_bsize) 41266864Sadrian if (write(fd, cp, (int)dev_bsize) != dev_bsize) { 41366864Sadrian (void)lseek(fd, offset + i + dev_bsize, 0); 414101037Smux printf(" %jd,", (intmax_t)blk + i / dev_bsize); 41566864Sadrian } 41666864Sadrian printf("\n"); 41766864Sadrian return; 41866864Sadrian} 41966864Sadrian 42066864Sadrian/* 42166864Sadrian * allocate a data block with the specified number of fragments 42266864Sadrian */ 42398542Smckusickufs2_daddr_t 42492839Simpallocblk(long frags) 42566864Sadrian{ 42666864Sadrian int i, j, k, cg, baseblk; 42766864Sadrian struct cg *cgp = &cgrp; 42866864Sadrian 42966864Sadrian if (frags <= 0 || frags > sblock.fs_frag) 43066864Sadrian return (0); 43166864Sadrian for (i = 0; i < maxfsblock - sblock.fs_frag; i += sblock.fs_frag) { 43266864Sadrian for (j = 0; j <= sblock.fs_frag - frags; j++) { 43366864Sadrian if (testbmap(i + j)) 43466864Sadrian continue; 43566864Sadrian for (k = 1; k < frags; k++) 43666864Sadrian if (testbmap(i + j + k)) 43766864Sadrian break; 43866864Sadrian if (k < frags) { 43966864Sadrian j += k; 44066864Sadrian continue; 44166864Sadrian } 44266864Sadrian cg = dtog(&sblock, i + j); 44366864Sadrian getblk(&cgblk, cgtod(&sblock, cg), sblock.fs_cgsize); 44466864Sadrian if (!cg_chkmagic(cgp)) 44566864Sadrian pfatal("CG %d: BAD MAGIC NUMBER\n", cg); 44666864Sadrian baseblk = dtogd(&sblock, i + j); 44766864Sadrian for (k = 0; k < frags; k++) { 44866864Sadrian setbmap(i + j + k); 44966864Sadrian clrbit(cg_blksfree(cgp), baseblk + k); 45066864Sadrian } 45166864Sadrian n_blks += frags; 45266864Sadrian if (frags == sblock.fs_frag) 45366864Sadrian cgp->cg_cs.cs_nbfree--; 45466864Sadrian else 45566864Sadrian cgp->cg_cs.cs_nffree -= frags; 45666864Sadrian cgdirty(); 45766864Sadrian return (i + j); 45866864Sadrian } 45966864Sadrian } 46066864Sadrian return (0); 46166864Sadrian} 46266864Sadrian 46366864Sadrian/* 46466864Sadrian * Free a previously allocated block 46566864Sadrian */ 46666864Sadrianvoid 46798542Smckusickfreeblk(ufs2_daddr_t blkno, long frags) 46866864Sadrian{ 46966864Sadrian struct inodesc idesc; 47066864Sadrian 47166864Sadrian idesc.id_blkno = blkno; 47266864Sadrian idesc.id_numfrags = frags; 47366864Sadrian (void)pass4check(&idesc); 47466864Sadrian} 47566864Sadrian 476107671Siedowse/* Slow down IO so as to leave some disk bandwidth for other processes */ 477107671Siedowsevoid 478107671Siedowseslowio_start() 479107671Siedowse{ 480107671Siedowse 481129401Sscottl /* Delay one in every 8 operations */ 482107671Siedowse slowio_pollcnt = (slowio_pollcnt + 1) & 7; 483107671Siedowse if (slowio_pollcnt == 0) { 484107671Siedowse gettimeofday(&slowio_starttime, NULL); 485107671Siedowse } 486107671Siedowse} 487107671Siedowse 488107671Siedowsevoid 489107671Siedowseslowio_end() 490107671Siedowse{ 491107671Siedowse struct timeval tv; 492107671Siedowse int delay_usec; 493107671Siedowse 494107671Siedowse if (slowio_pollcnt != 0) 495107671Siedowse return; 496107671Siedowse 497107671Siedowse /* Update the slowdown interval. */ 498107671Siedowse gettimeofday(&tv, NULL); 499107671Siedowse delay_usec = (tv.tv_sec - slowio_starttime.tv_sec) * 1000000 + 500107671Siedowse (tv.tv_usec - slowio_starttime.tv_usec); 501107671Siedowse if (delay_usec < 64) 502107671Siedowse delay_usec = 64; 503129401Sscottl if (delay_usec > 2500000) 504129401Sscottl delay_usec = 2500000; 505107671Siedowse slowio_delay_usec = (slowio_delay_usec * 63 + delay_usec) >> 6; 506129401Sscottl /* delay by 8 times the average IO delay */ 507129401Sscottl if (slowio_delay_usec > 64) 508129401Sscottl usleep(slowio_delay_usec * 8); 509107671Siedowse} 510107671Siedowse 51166864Sadrian/* 51266864Sadrian * Find a pathname 51366864Sadrian */ 51466864Sadrianvoid 51592839Simpgetpathname(char *namebuf, ino_t curdir, ino_t ino) 51666864Sadrian{ 51766864Sadrian int len; 51892806Sobrien char *cp; 51966864Sadrian struct inodesc idesc; 52066864Sadrian static int busy = 0; 52166864Sadrian 52266864Sadrian if (curdir == ino && ino == ROOTINO) { 52366864Sadrian (void)strcpy(namebuf, "/"); 52466864Sadrian return; 52566864Sadrian } 526136281Struckman if (busy || !INO_IS_DVALID(curdir)) { 52766864Sadrian (void)strcpy(namebuf, "?"); 52866864Sadrian return; 52966864Sadrian } 53066864Sadrian busy = 1; 53166864Sadrian memset(&idesc, 0, sizeof(struct inodesc)); 53266864Sadrian idesc.id_type = DATA; 53366864Sadrian idesc.id_fix = IGNORE; 53466864Sadrian cp = &namebuf[MAXPATHLEN - 1]; 53566864Sadrian *cp = '\0'; 53666864Sadrian if (curdir != ino) { 53766864Sadrian idesc.id_parent = curdir; 53866864Sadrian goto namelookup; 53966864Sadrian } 54066864Sadrian while (ino != ROOTINO) { 54166864Sadrian idesc.id_number = ino; 54266864Sadrian idesc.id_func = findino; 543100935Sphk idesc.id_name = strdup(".."); 54466864Sadrian if ((ckinode(ginode(ino), &idesc) & FOUND) == 0) 54566864Sadrian break; 54666864Sadrian namelookup: 54766864Sadrian idesc.id_number = idesc.id_parent; 54866864Sadrian idesc.id_parent = ino; 54966864Sadrian idesc.id_func = findname; 55066864Sadrian idesc.id_name = namebuf; 55166864Sadrian if ((ckinode(ginode(idesc.id_number), &idesc)&FOUND) == 0) 55266864Sadrian break; 55366864Sadrian len = strlen(namebuf); 55466864Sadrian cp -= len; 55566864Sadrian memmove(cp, namebuf, (size_t)len); 55666864Sadrian *--cp = '/'; 55766864Sadrian if (cp < &namebuf[MAXNAMLEN]) 55866864Sadrian break; 55966864Sadrian ino = idesc.id_number; 56066864Sadrian } 56166864Sadrian busy = 0; 56266864Sadrian if (ino != ROOTINO) 56366864Sadrian *--cp = '?'; 56466864Sadrian memmove(namebuf, cp, (size_t)(&namebuf[MAXPATHLEN] - cp)); 56566864Sadrian} 56666864Sadrian 56766864Sadrianvoid 568100935Sphkcatch(int sig __unused) 56966864Sadrian{ 57096483Sphk 57196483Sphk ckfini(0); 57266864Sadrian exit(12); 57366864Sadrian} 57466864Sadrian 57566864Sadrian/* 57666864Sadrian * When preening, allow a single quit to signal 577102231Strhodes * a special exit after file system checks complete 57866864Sadrian * so that reboot sequence may be interrupted. 57966864Sadrian */ 58066864Sadrianvoid 581100935Sphkcatchquit(int sig __unused) 58266864Sadrian{ 583102231Strhodes printf("returning to single-user after file system check\n"); 58466864Sadrian returntosingle = 1; 58566864Sadrian (void)signal(SIGQUIT, SIG_DFL); 58666864Sadrian} 58766864Sadrian 58866864Sadrian/* 58966864Sadrian * determine whether an inode should be fixed. 59066864Sadrian */ 59166864Sadrianint 592100935Sphkdofix(struct inodesc *idesc, const char *msg) 59366864Sadrian{ 59466864Sadrian 59566864Sadrian switch (idesc->id_fix) { 59666864Sadrian 59766864Sadrian case DONTKNOW: 59866864Sadrian if (idesc->id_type == DATA) 59966864Sadrian direrror(idesc->id_number, msg); 60066864Sadrian else 60181911Skris pwarn("%s", msg); 60266864Sadrian if (preen) { 60366864Sadrian printf(" (SALVAGED)\n"); 60466864Sadrian idesc->id_fix = FIX; 60566864Sadrian return (ALTERED); 60666864Sadrian } 60766864Sadrian if (reply("SALVAGE") == 0) { 60866864Sadrian idesc->id_fix = NOFIX; 60966864Sadrian return (0); 61066864Sadrian } 61166864Sadrian idesc->id_fix = FIX; 61266864Sadrian return (ALTERED); 61366864Sadrian 61466864Sadrian case FIX: 61566864Sadrian return (ALTERED); 61666864Sadrian 61766864Sadrian case NOFIX: 61866864Sadrian case IGNORE: 61966864Sadrian return (0); 62066864Sadrian 62166864Sadrian default: 62266864Sadrian errx(EEXIT, "UNKNOWN INODESC FIX MODE %d", idesc->id_fix); 62366864Sadrian } 62466864Sadrian /* NOTREACHED */ 62566864Sadrian return (0); 62666864Sadrian} 62766864Sadrian 62866864Sadrian#include <stdarg.h> 62966864Sadrian 63066864Sadrian/* 63166864Sadrian * An unexpected inconsistency occured. 632102231Strhodes * Die if preening or file system is running with soft dependency protocol, 63366864Sadrian * otherwise just print message and continue. 63466864Sadrian */ 63566864Sadrianvoid 63666864Sadrianpfatal(const char *fmt, ...) 63766864Sadrian{ 63866864Sadrian va_list ap; 63966864Sadrian va_start(ap, fmt); 64066864Sadrian if (!preen) { 64175927Smckusick (void)vfprintf(stdout, fmt, ap); 64266864Sadrian va_end(ap); 64366864Sadrian if (usedsoftdep) 64475927Smckusick (void)fprintf(stdout, 64566864Sadrian "\nUNEXPECTED SOFT UPDATE INCONSISTENCY\n"); 64675557Smckusick /* 64775557Smckusick * Force foreground fsck to clean up inconsistency. 64875557Smckusick */ 64975557Smckusick if (bkgrdflag) { 65075557Smckusick cmd.value = FS_NEEDSFSCK; 65175557Smckusick cmd.size = 1; 65275557Smckusick if (sysctlbyname("vfs.ffs.setflags", 0, 0, 65375557Smckusick &cmd, sizeof cmd) == -1) 65475557Smckusick pwarn("CANNOT SET FS_NEEDSFSCK FLAG\n"); 65575927Smckusick fprintf(stdout, "CANNOT RUN IN BACKGROUND\n"); 65675557Smckusick ckfini(0); 65775557Smckusick exit(EEXIT); 65875557Smckusick } 65966864Sadrian return; 66066864Sadrian } 66166864Sadrian if (cdevname == NULL) 662100935Sphk cdevname = strdup("fsck"); 66375927Smckusick (void)fprintf(stdout, "%s: ", cdevname); 66475927Smckusick (void)vfprintf(stdout, fmt, ap); 66575927Smckusick (void)fprintf(stdout, 66666864Sadrian "\n%s: UNEXPECTED%sINCONSISTENCY; RUN fsck MANUALLY.\n", 66766864Sadrian cdevname, usedsoftdep ? " SOFT UPDATE " : " "); 66875557Smckusick /* 66975557Smckusick * Force foreground fsck to clean up inconsistency. 67075557Smckusick */ 67175557Smckusick if (bkgrdflag) { 67275557Smckusick cmd.value = FS_NEEDSFSCK; 67375557Smckusick cmd.size = 1; 67475557Smckusick if (sysctlbyname("vfs.ffs.setflags", 0, 0, 67575557Smckusick &cmd, sizeof cmd) == -1) 67675557Smckusick pwarn("CANNOT SET FS_NEEDSFSCK FLAG\n"); 67775557Smckusick } 67866864Sadrian ckfini(0); 67966864Sadrian exit(EEXIT); 68066864Sadrian} 68166864Sadrian 68266864Sadrian/* 68366864Sadrian * Pwarn just prints a message when not preening or running soft dependency 68466864Sadrian * protocol, or a warning (preceded by filename) when preening. 68566864Sadrian */ 68666864Sadrianvoid 68766864Sadrianpwarn(const char *fmt, ...) 68866864Sadrian{ 68966864Sadrian va_list ap; 69066864Sadrian va_start(ap, fmt); 69166864Sadrian if (preen) 69275927Smckusick (void)fprintf(stdout, "%s: ", cdevname); 69375927Smckusick (void)vfprintf(stdout, fmt, ap); 69466864Sadrian va_end(ap); 69566864Sadrian} 69666864Sadrian 69766864Sadrian/* 69866864Sadrian * Stub for routines from kernel. 69966864Sadrian */ 70066864Sadrianvoid 70166864Sadrianpanic(const char *fmt, ...) 70266864Sadrian{ 70366864Sadrian va_list ap; 70466864Sadrian va_start(ap, fmt); 70566864Sadrian pfatal("INTERNAL INCONSISTENCY:"); 70675927Smckusick (void)vfprintf(stdout, fmt, ap); 70766864Sadrian va_end(ap); 70866864Sadrian exit(EEXIT); 70966864Sadrian} 710