main.c revision 75557
11558Srgrimes/* 21558Srgrimes * Copyright (c) 1980, 1986, 1993 31558Srgrimes * The Regents of the University of California. All rights reserved. 41558Srgrimes * 51558Srgrimes * Redistribution and use in source and binary forms, with or without 61558Srgrimes * modification, are permitted provided that the following conditions 71558Srgrimes * are met: 81558Srgrimes * 1. Redistributions of source code must retain the above copyright 91558Srgrimes * notice, this list of conditions and the following disclaimer. 101558Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111558Srgrimes * notice, this list of conditions and the following disclaimer in the 121558Srgrimes * documentation and/or other materials provided with the distribution. 131558Srgrimes * 3. All advertising materials mentioning features or use of this software 141558Srgrimes * must display the following acknowledgement: 151558Srgrimes * This product includes software developed by the University of 161558Srgrimes * California, Berkeley and its contributors. 171558Srgrimes * 4. Neither the name of the University nor the names of its contributors 181558Srgrimes * may be used to endorse or promote products derived from this software 191558Srgrimes * without specific prior written permission. 201558Srgrimes * 211558Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 221558Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 231558Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 241558Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 251558Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 261558Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 271558Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 281558Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 291558Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 301558Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 311558Srgrimes * SUCH DAMAGE. 321558Srgrimes */ 331558Srgrimes 341558Srgrimes#ifndef lint 357585Sbdestatic const char copyright[] = 361558Srgrimes"@(#) Copyright (c) 1980, 1986, 1993\n\ 371558Srgrimes The Regents of the University of California. All rights reserved.\n"; 381558Srgrimes#endif /* not lint */ 391558Srgrimes 401558Srgrimes#ifndef lint 4141477Sjulian#if 0 4241477Sjulianstatic char sccsid[] = "@(#)main.c 8.6 (Berkeley) 5/14/95"; 4341477Sjulian#endif 4441477Sjulianstatic const char rcsid[] = 4550476Speter "$FreeBSD: head/sbin/fsck_ffs/main.c 75557 2001-04-16 22:22:21Z mckusick $"; 461558Srgrimes#endif /* not lint */ 471558Srgrimes 481558Srgrimes#include <sys/param.h> 4955275Speter#include <sys/stat.h> 5075557Smckusick#include <sys/file.h> 511558Srgrimes#include <sys/time.h> 521558Srgrimes#include <sys/mount.h> 5340918Smjacob#include <sys/resource.h> 5423675Speter 551558Srgrimes#include <ufs/ufs/dinode.h> 5623675Speter#include <ufs/ufs/ufsmount.h> 571558Srgrimes#include <ufs/ffs/fs.h> 5823675Speter 5923675Speter#include <err.h> 6055725Speter#include <errno.h> 611558Srgrimes#include <fstab.h> 6255725Speter#include <paths.h> 6323675Speter 641558Srgrimes#include "fsck.h" 651558Srgrimes 6666861Sadrianint returntosingle; 6766861Sadrian 6866861Sadrianstatic void usage __P((void)); 6923675Speterstatic int argtoi __P((int flag, char *req, char *str, int base)); 7023675Speterstatic int docheck __P((struct fstab *fsp)); 7123675Speterstatic int checkfilesys __P((char *filesys, char *mntpt, long auxdata, 7223675Speter int child)); 7355275Speterstatic struct statfs *getmntpt __P((const char *)); 7423675Speterint main __P((int argc, char *argv[])); 7523675Speter 767585Sbdeint 771558Srgrimesmain(argc, argv) 781558Srgrimes int argc; 791558Srgrimes char *argv[]; 801558Srgrimes{ 811558Srgrimes int ch; 8241474Sjulian struct rlimit rlimit; 8366861Sadrian int ret = 0; 841558Srgrimes 851558Srgrimes sync(); 8666861Sadrian skipclean = 1; 8774556Smckusick while ((ch = getopt(argc, argv, "b:Bc:dfm:npy")) != -1) { 881558Srgrimes switch (ch) { 891558Srgrimes case 'b': 9066861Sadrian skipclean = 0; 911558Srgrimes bflag = argtoi('b', "number", optarg, 10); 921558Srgrimes printf("Alternate super block location: %d\n", bflag); 931558Srgrimes break; 941558Srgrimes 9574556Smckusick case 'B': 9674556Smckusick bkgrdflag = 1; 9774556Smckusick break; 9874556Smckusick 991558Srgrimes case 'c': 10066861Sadrian skipclean = 0; 1011558Srgrimes cvtlevel = argtoi('c', "conversion level", optarg, 10); 1021558Srgrimes break; 1038871Srgrimes 1041558Srgrimes case 'd': 1051558Srgrimes debug++; 1061558Srgrimes break; 1071558Srgrimes 1082153Sdg case 'f': 10966861Sadrian skipclean = 0; 1102153Sdg break; 1112153Sdg 1121558Srgrimes case 'm': 1131558Srgrimes lfmode = argtoi('m', "mode", optarg, 8); 1141558Srgrimes if (lfmode &~ 07777) 11523675Speter errx(EEXIT, "bad mode to -m: %o", lfmode); 1161558Srgrimes printf("** lost+found creation mode %o\n", lfmode); 1171558Srgrimes break; 1181558Srgrimes 1191558Srgrimes case 'n': 1201558Srgrimes nflag++; 1211558Srgrimes yflag = 0; 1221558Srgrimes break; 1231558Srgrimes 12466861Sadrian case 'p': 12566861Sadrian preen++; 12666861Sadrian break; 12766861Sadrian 1281558Srgrimes case 'y': 1291558Srgrimes yflag++; 1301558Srgrimes nflag = 0; 1311558Srgrimes break; 1321558Srgrimes 1331558Srgrimes default: 13466861Sadrian usage(); 1351558Srgrimes } 1361558Srgrimes } 1371558Srgrimes argc -= optind; 1381558Srgrimes argv += optind; 13966861Sadrian 14066861Sadrian if (!argc) 14166861Sadrian usage(); 14266861Sadrian 1431558Srgrimes if (signal(SIGINT, SIG_IGN) != SIG_IGN) 1441558Srgrimes (void)signal(SIGINT, catch); 1451558Srgrimes if (preen) 1461558Srgrimes (void)signal(SIGQUIT, catchquit); 14770050Siedowse signal(SIGINFO, infohandler); 14841474Sjulian /* 14941474Sjulian * Push up our allowed memory limit so we can cope 15041474Sjulian * with huge filesystems. 15141474Sjulian */ 15241474Sjulian if (getrlimit(RLIMIT_DATA, &rlimit) == 0) { 15341474Sjulian rlimit.rlim_cur = rlimit.rlim_max; 15441474Sjulian (void)setrlimit(RLIMIT_DATA, &rlimit); 15541474Sjulian } 15666861Sadrian while (argc-- > 0) 15766861Sadrian (void)checkfilesys(blockcheck(*argv++), 0, 0L, 0); 15841474Sjulian 1591558Srgrimes if (returntosingle) 16066861Sadrian ret = 2; 1611558Srgrimes exit(ret); 1621558Srgrimes} 1631558Srgrimes 16423675Speterstatic int 1651558Srgrimesargtoi(flag, req, str, base) 1661558Srgrimes int flag; 1671558Srgrimes char *req, *str; 1681558Srgrimes int base; 1691558Srgrimes{ 1701558Srgrimes char *cp; 1711558Srgrimes int ret; 1721558Srgrimes 1731558Srgrimes ret = (int)strtol(str, &cp, base); 1741558Srgrimes if (cp == str || *cp) 17523675Speter errx(EEXIT, "-%c flag requires a %s", flag, req); 1761558Srgrimes return (ret); 1771558Srgrimes} 1781558Srgrimes 1791558Srgrimes/* 1801558Srgrimes * Check the specified filesystem. 1811558Srgrimes */ 1821558Srgrimes/* ARGSUSED */ 18323675Speterstatic int 1841558Srgrimescheckfilesys(filesys, mntpt, auxdata, child) 1851558Srgrimes char *filesys, *mntpt; 1861558Srgrimes long auxdata; 1877585Sbde int child; 1881558Srgrimes{ 18923675Speter ufs_daddr_t n_ffree, n_bfree; 19074556Smckusick struct ufs_args args; 1911558Srgrimes struct dups *dp; 19274556Smckusick struct statfs *mntp; 1931558Srgrimes struct zlncnt *zlnp; 19474556Smckusick ufs_daddr_t blks; 19574556Smckusick ufs_daddr_t files; 19655275Speter int cylno; 1971558Srgrimes 1981558Srgrimes if (preen && child) 1991558Srgrimes (void)signal(SIGQUIT, voidquit); 2001558Srgrimes cdevname = filesys; 2011558Srgrimes if (debug && preen) 2021558Srgrimes pwarn("starting\n"); 20375557Smckusick sblock_init(); 20474556Smckusick 20574556Smckusick /* 20674556Smckusick * If we are to do a background check: 20774556Smckusick * Get the mount point information of the filesystem 20874556Smckusick * create snapshot file 20974556Smckusick * return created snapshot file 21074556Smckusick * if not found, clear bkgrdflag and proceed with normal fsck 21174556Smckusick */ 21274556Smckusick mntp = getmntpt(filesys); 21374556Smckusick if (bkgrdflag) { 21474556Smckusick if (mntp == NULL) { 21574556Smckusick bkgrdflag = 0; 21675557Smckusick pfatal("NOT MOUNTED, CANNOT RUN IN BACKGROUND\n"); 21774556Smckusick } else if ((mntp->f_flags & MNT_SOFTDEP) == 0) { 21874556Smckusick bkgrdflag = 0; 21975557Smckusick pfatal("NOT USING SOFT UPDATES, %s\n", 22075557Smckusick "CANNOT RUN IN BACKGROUND"); 22174556Smckusick } else if ((mntp->f_flags & MNT_RDONLY) != 0) { 22274556Smckusick bkgrdflag = 0; 22375557Smckusick pfatal("MOUNTED READ-ONLY, CANNOT RUN IN BACKGROUND\n"); 22475557Smckusick } else if ((fsreadfd = open(filesys, O_RDONLY)) >= 0) { 22575557Smckusick if (readsb(0) != 0) { 22675557Smckusick if (sblock.fs_flags & FS_NEEDSFSCK) { 22775557Smckusick bkgrdflag = 0; 22875557Smckusick pfatal("UNEXPECTED INCONSISTENCY, %s\n", 22975557Smckusick "CANNOT RUN IN BACKGROUND\n"); 23075557Smckusick } 23175557Smckusick if ((sblock.fs_flags & FS_UNCLEAN) == 0 && 23275557Smckusick skipclean && preen) { 23375557Smckusick /* 23475557Smckusick * filesystem is clean; 23575557Smckusick * skip snapshot and report it clean 23675557Smckusick */ 23775557Smckusick pwarn("FILESYSTEM CLEAN; %s\n", 23875557Smckusick "SKIPPING CHECKS"); 23975557Smckusick goto clean; 24075557Smckusick } 24175557Smckusick } 24275557Smckusick close(fsreadfd); 24375557Smckusick } 24475557Smckusick if (bkgrdflag) { 24574556Smckusick snprintf(snapname, sizeof snapname, "%s/.fsck_snapshot", 24674556Smckusick mntp->f_mntonname); 24774556Smckusick args.fspec = snapname; 24874556Smckusick while (mount("ffs", mntp->f_mntonname, 24974556Smckusick mntp->f_flags | MNT_UPDATE | MNT_SNAPSHOT, 25074556Smckusick &args) < 0) { 25174556Smckusick if (errno == EEXIST && unlink(snapname) == 0) 25274556Smckusick continue; 25374556Smckusick bkgrdflag = 0; 25475557Smckusick pfatal("CANNOT CREATE SNAPSHOT %s: %s\n", 25574556Smckusick snapname, strerror(errno)); 25674556Smckusick break; 25774556Smckusick } 25874556Smckusick if (bkgrdflag != 0) 25974556Smckusick filesys = snapname; 26074556Smckusick } 26174556Smckusick } 26274556Smckusick 26323675Speter switch (setup(filesys)) { 26423675Speter case 0: 2651558Srgrimes if (preen) 2661558Srgrimes pfatal("CAN'T CHECK FILE SYSTEM."); 26741477Sjulian return (0); 26823675Speter case -1: 26975557Smckusick clean: 27041477Sjulian pwarn("clean, %ld free ", sblock.fs_cstotal.cs_nffree + 27141477Sjulian sblock.fs_frag * sblock.fs_cstotal.cs_nbfree); 27241477Sjulian printf("(%d frags, %d blocks, %.1f%% fragmentation)\n", 27341477Sjulian sblock.fs_cstotal.cs_nffree, sblock.fs_cstotal.cs_nbfree, 27441477Sjulian sblock.fs_cstotal.cs_nffree * 100.0 / sblock.fs_dsize); 27531904Sbde return (0); 2762153Sdg } 27755275Speter 27855275Speter /* 27934266Sjulian * Cleared if any questions answered no. Used to decide if 28034266Sjulian * the superblock should be marked clean. 28134266Sjulian */ 28234266Sjulian resolved = 1; 28334266Sjulian /* 2841558Srgrimes * 1: scan inodes tallying blocks used 2851558Srgrimes */ 2861558Srgrimes if (preen == 0) { 2871558Srgrimes printf("** Last Mounted on %s\n", sblock.fs_fsmnt); 28874556Smckusick if (mntp != NULL && mntp->f_flags & MNT_ROOTFS) 2891558Srgrimes printf("** Root file system\n"); 2901558Srgrimes printf("** Phase 1 - Check Blocks and Sizes\n"); 2911558Srgrimes } 2921558Srgrimes pass1(); 2931558Srgrimes 2941558Srgrimes /* 2951558Srgrimes * 1b: locate first references to duplicates, if any 2961558Srgrimes */ 2971558Srgrimes if (duplist) { 29834266Sjulian if (preen || usedsoftdep) 2991558Srgrimes pfatal("INTERNAL ERROR: dups with -p"); 3001558Srgrimes printf("** Phase 1b - Rescan For More DUPS\n"); 3011558Srgrimes pass1b(); 3021558Srgrimes } 3031558Srgrimes 3041558Srgrimes /* 3051558Srgrimes * 2: traverse directories from root to mark all connected directories 3061558Srgrimes */ 3071558Srgrimes if (preen == 0) 3081558Srgrimes printf("** Phase 2 - Check Pathnames\n"); 3091558Srgrimes pass2(); 3101558Srgrimes 3111558Srgrimes /* 3121558Srgrimes * 3: scan inodes looking for disconnected directories 3131558Srgrimes */ 3141558Srgrimes if (preen == 0) 3151558Srgrimes printf("** Phase 3 - Check Connectivity\n"); 3161558Srgrimes pass3(); 3171558Srgrimes 3181558Srgrimes /* 3191558Srgrimes * 4: scan inodes looking for disconnected files; check reference counts 3201558Srgrimes */ 3211558Srgrimes if (preen == 0) 3221558Srgrimes printf("** Phase 4 - Check Reference Counts\n"); 3231558Srgrimes pass4(); 3241558Srgrimes 3251558Srgrimes /* 3261558Srgrimes * 5: check and repair resource counts in cylinder groups 3271558Srgrimes */ 3281558Srgrimes if (preen == 0) 3291558Srgrimes printf("** Phase 5 - Check Cyl groups\n"); 3301558Srgrimes pass5(); 3311558Srgrimes 3321558Srgrimes /* 3331558Srgrimes * print out summary statistics 3341558Srgrimes */ 3351558Srgrimes n_ffree = sblock.fs_cstotal.cs_nffree; 3361558Srgrimes n_bfree = sblock.fs_cstotal.cs_nbfree; 33774556Smckusick files = maxino - ROOTINO - sblock.fs_cstotal.cs_nifree - n_files; 33874556Smckusick blks = n_blks + 33974556Smckusick sblock.fs_ncg * (cgdmin(&sblock, 0) - cgsblock(&sblock, 0)); 34074556Smckusick blks += cgsblock(&sblock, 0) - cgbase(&sblock, 0); 34174556Smckusick blks += howmany(sblock.fs_cssize, sblock.fs_fsize); 34274556Smckusick blks = maxfsblock - (n_ffree + sblock.fs_frag * n_bfree) - blks; 34374556Smckusick if (bkgrdflag && (files > 0 || blks > 0)) { 34474556Smckusick countdirs = sblock.fs_cstotal.cs_ndir - countdirs; 34574556Smckusick pwarn("Reclaimed: %d directories, %d files, %d fragments\n", 34674556Smckusick countdirs, files - countdirs, blks); 34774556Smckusick } 3481558Srgrimes pwarn("%ld files, %ld used, %ld free ", 3491558Srgrimes n_files, n_blks, n_ffree + sblock.fs_frag * n_bfree); 35031904Sbde printf("(%d frags, %d blocks, %.1f%% fragmentation)\n", 35131904Sbde n_ffree, n_bfree, n_ffree * 100.0 / sblock.fs_dsize); 3521558Srgrimes if (debug) { 35374556Smckusick if (files < 0) 35474556Smckusick printf("%d inodes missing\n", -files); 35574556Smckusick if (blks < 0) 35674556Smckusick printf("%d blocks missing\n", -blks); 3571558Srgrimes if (duplist != NULL) { 3581558Srgrimes printf("The following duplicate blocks remain:"); 3591558Srgrimes for (dp = duplist; dp; dp = dp->next) 36031904Sbde printf(" %d,", dp->dup); 3611558Srgrimes printf("\n"); 3621558Srgrimes } 3631558Srgrimes if (zlnhead != NULL) { 3641558Srgrimes printf("The following zero link count inodes remain:"); 3651558Srgrimes for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 36631904Sbde printf(" %u,", zlnp->zlncnt); 3671558Srgrimes printf("\n"); 3681558Srgrimes } 3691558Srgrimes } 3701558Srgrimes zlnhead = (struct zlncnt *)0; 3711558Srgrimes duplist = (struct dups *)0; 3721558Srgrimes muldup = (struct dups *)0; 3731558Srgrimes inocleanup(); 3742179Sdg if (fsmodified) { 37541474Sjulian sblock.fs_time = time(NULL); 3761558Srgrimes sbdirty(); 3771558Srgrimes } 3781558Srgrimes if (cvtlevel && sblk.b_dirty) { 3798871Srgrimes /* 3801558Srgrimes * Write out the duplicate super blocks 3811558Srgrimes */ 3821558Srgrimes for (cylno = 0; cylno < sblock.fs_ncg; cylno++) 3831558Srgrimes bwrite(fswritefd, (char *)&sblock, 3841558Srgrimes fsbtodb(&sblock, cgsblock(&sblock, cylno)), SBSIZE); 3851558Srgrimes } 38634266Sjulian if (rerun) 38734266Sjulian resolved = 0; 38855275Speter 38955725Speter /* 39055773Speter * Check to see if the filesystem is mounted read-write. 39155725Speter */ 39274556Smckusick if (bkgrdflag == 0 && mntp != NULL && (mntp->f_flags & MNT_RDONLY) == 0) 39355275Speter resolved = 0; 39434266Sjulian ckfini(resolved); 39541474Sjulian 39641474Sjulian for (cylno = 0; cylno < sblock.fs_ncg; cylno++) 39741474Sjulian if (inostathead[cylno].il_stat != NULL) 39841474Sjulian free((char *)inostathead[cylno].il_stat); 39941474Sjulian free((char *)inostathead); 40041474Sjulian inostathead = NULL; 40141474Sjulian if (fsmodified && !preen) 4021558Srgrimes printf("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 40318808Sguido if (rerun) 40418808Sguido printf("\n***** PLEASE RERUN FSCK *****\n"); 40574556Smckusick if (mntp != NULL) { 40623675Speter struct ufs_args args; 40723675Speter int ret; 40855725Speter /* 40955725Speter * We modified a mounted filesystem. Do a mount update on 41055725Speter * it unless it is read-write, so we can continue using it 41155725Speter * as safely as possible. 41255725Speter */ 41374556Smckusick if (mntp->f_flags & MNT_RDONLY) { 41455725Speter args.fspec = 0; 41555725Speter args.export.ex_flags = 0; 41655725Speter args.export.ex_root = 0; 41774556Smckusick ret = mount("ufs", mntp->f_mntonname, 41874556Smckusick mntp->f_flags | MNT_UPDATE | MNT_RELOAD, &args); 41955725Speter if (ret == 0) 42055725Speter return (0); 42155725Speter pwarn("mount reload of '%s' failed: %s\n\n", 42274556Smckusick mntp->f_mntonname, strerror(errno)); 42355725Speter } 42441474Sjulian if (!fsmodified) 42541474Sjulian return (0); 4261558Srgrimes if (!preen) 4271558Srgrimes printf("\n***** REBOOT NOW *****\n"); 4281558Srgrimes sync(); 4291558Srgrimes return (4); 4301558Srgrimes } 4311558Srgrimes return (0); 4321558Srgrimes} 43355275Speter 43455275Speter/* 43555725Speter * Get the directory that the device is mounted on. 43655275Speter */ 43755275Speterstatic struct statfs * 43855275Spetergetmntpt(name) 43955275Speter const char *name; 44055275Speter{ 44155725Speter struct stat devstat, mntdevstat; 44255725Speter char device[sizeof(_PATH_DEV) - 1 + MNAMELEN]; 44355725Speter char *devname; 44455275Speter struct statfs *mntbuf; 44555275Speter int i, mntsize; 44655275Speter 44755725Speter if (stat(name, &devstat) != 0 || 44855275Speter !(S_ISCHR(devstat.st_mode) || S_ISBLK(devstat.st_mode))) 44955275Speter return (NULL); 45055275Speter mntsize = getmntinfo(&mntbuf, MNT_NOWAIT); 45155275Speter for (i = 0; i < mntsize; i++) { 45255725Speter if (strcmp(mntbuf[i].f_fstypename, "ufs") != 0) 45355275Speter continue; 45455725Speter devname = mntbuf[i].f_mntfromname; 45555725Speter if (*devname != '/') { 45655725Speter strcpy(device, _PATH_DEV); 45755725Speter strcat(device, devname); 45855725Speter devname = device; 45955725Speter } 46055773Speter if (stat(devname, &mntdevstat) == 0 && 46155725Speter mntdevstat.st_rdev == devstat.st_rdev) 46255275Speter return (&mntbuf[i]); 46355275Speter } 46455275Speter return (NULL); 46555275Speter} 46666861Sadrian 46766861Sadrianstatic void 46866861Sadrianusage() 46966861Sadrian{ 47066861Sadrian extern char *__progname; 47166861Sadrian 47266861Sadrian (void) fprintf(stderr, 47366861Sadrian "Usage: %s [-dfnpy] [-B be|le] [-b block] [-c level] [-m mode] " 47466861Sadrian "filesystem ...\n", 47566861Sadrian __progname); 47666861Sadrian exit(1); 47766861Sadrian} 478