main.c revision 55275
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 55275 1999-12-30 16:32:40Z peter $"; 461558Srgrimes#endif /* not lint */ 471558Srgrimes 481558Srgrimes#include <sys/param.h> 4955275Speter#include <sys/stat.h> 501558Srgrimes#include <sys/time.h> 511558Srgrimes#include <sys/mount.h> 5240918Smjacob#include <sys/resource.h> 5323675Speter 541558Srgrimes#include <ufs/ufs/dinode.h> 5523675Speter#include <ufs/ufs/ufsmount.h> 561558Srgrimes#include <ufs/ffs/fs.h> 5723675Speter 5823675Speter#include <err.h> 591558Srgrimes#include <fstab.h> 6023675Speter 611558Srgrimes#include "fsck.h" 621558Srgrimes 6323675Speterstatic int argtoi __P((int flag, char *req, char *str, int base)); 6423675Speterstatic int docheck __P((struct fstab *fsp)); 6523675Speterstatic int checkfilesys __P((char *filesys, char *mntpt, long auxdata, 6623675Speter int child)); 6755275Speterstatic struct statfs *getmntpt __P((const char *)); 6823675Speterint main __P((int argc, char *argv[])); 6923675Speter 707585Sbdeint 711558Srgrimesmain(argc, argv) 721558Srgrimes int argc; 731558Srgrimes char *argv[]; 741558Srgrimes{ 751558Srgrimes int ch; 761558Srgrimes int ret, maxrun = 0; 7741474Sjulian struct rlimit rlimit; 781558Srgrimes 791558Srgrimes sync(); 8023795Sbde while ((ch = getopt(argc, argv, "dfpnNyYb:c:l:m:")) != -1) { 811558Srgrimes switch (ch) { 821558Srgrimes case 'p': 831558Srgrimes preen++; 841558Srgrimes break; 851558Srgrimes 861558Srgrimes case 'b': 871558Srgrimes bflag = argtoi('b', "number", optarg, 10); 881558Srgrimes printf("Alternate super block location: %d\n", bflag); 891558Srgrimes break; 901558Srgrimes 911558Srgrimes case 'c': 921558Srgrimes cvtlevel = argtoi('c', "conversion level", optarg, 10); 931558Srgrimes break; 948871Srgrimes 951558Srgrimes case 'd': 961558Srgrimes debug++; 971558Srgrimes break; 981558Srgrimes 992153Sdg case 'f': 1002153Sdg fflag++; 1012153Sdg break; 1022153Sdg 1031558Srgrimes case 'l': 1041558Srgrimes maxrun = argtoi('l', "number", optarg, 10); 1051558Srgrimes break; 1061558Srgrimes 1071558Srgrimes case 'm': 1081558Srgrimes lfmode = argtoi('m', "mode", optarg, 8); 1091558Srgrimes if (lfmode &~ 07777) 11023675Speter errx(EEXIT, "bad mode to -m: %o", lfmode); 1111558Srgrimes printf("** lost+found creation mode %o\n", lfmode); 1121558Srgrimes break; 1131558Srgrimes 1141558Srgrimes case 'n': 1151558Srgrimes case 'N': 1161558Srgrimes nflag++; 1171558Srgrimes yflag = 0; 1181558Srgrimes break; 1191558Srgrimes 1201558Srgrimes case 'y': 1211558Srgrimes case 'Y': 1221558Srgrimes yflag++; 1231558Srgrimes nflag = 0; 1241558Srgrimes break; 1251558Srgrimes 1261558Srgrimes default: 12723675Speter errx(EEXIT, "%c option?", ch); 1281558Srgrimes } 1291558Srgrimes } 1301558Srgrimes argc -= optind; 1311558Srgrimes argv += optind; 1321558Srgrimes if (signal(SIGINT, SIG_IGN) != SIG_IGN) 1331558Srgrimes (void)signal(SIGINT, catch); 1341558Srgrimes if (preen) 1351558Srgrimes (void)signal(SIGQUIT, catchquit); 13641474Sjulian /* 13741474Sjulian * Push up our allowed memory limit so we can cope 13841474Sjulian * with huge filesystems. 13941474Sjulian */ 14041474Sjulian if (getrlimit(RLIMIT_DATA, &rlimit) == 0) { 14141474Sjulian rlimit.rlim_cur = rlimit.rlim_max; 14241474Sjulian (void)setrlimit(RLIMIT_DATA, &rlimit); 14341474Sjulian } 1441558Srgrimes if (argc) { 14541474Sjulian while (argc-- > 0) { 14641474Sjulian char *path = blockcheck(*argv); 14741474Sjulian 14841474Sjulian if (path == NULL) 14941474Sjulian pfatal("Can't check %s\n", *argv); 15041474Sjulian else 15141474Sjulian (void)checkfilesys(path, 0, 0L, 0); 15241474Sjulian ++argv; 15341474Sjulian } 1541558Srgrimes exit(0); 1551558Srgrimes } 1561558Srgrimes ret = checkfstab(preen, maxrun, docheck, checkfilesys); 1571558Srgrimes if (returntosingle) 1581558Srgrimes exit(2); 1591558Srgrimes exit(ret); 1601558Srgrimes} 1611558Srgrimes 16223675Speterstatic int 1631558Srgrimesargtoi(flag, req, str, base) 1641558Srgrimes int flag; 1651558Srgrimes char *req, *str; 1661558Srgrimes int base; 1671558Srgrimes{ 1681558Srgrimes char *cp; 1691558Srgrimes int ret; 1701558Srgrimes 1711558Srgrimes ret = (int)strtol(str, &cp, base); 1721558Srgrimes if (cp == str || *cp) 17323675Speter errx(EEXIT, "-%c flag requires a %s", flag, req); 1741558Srgrimes return (ret); 1751558Srgrimes} 1761558Srgrimes 1771558Srgrimes/* 1781558Srgrimes * Determine whether a filesystem should be checked. 1791558Srgrimes */ 18023675Speterstatic int 1811558Srgrimesdocheck(fsp) 1821558Srgrimes register struct fstab *fsp; 1831558Srgrimes{ 1841558Srgrimes 1851558Srgrimes if (strcmp(fsp->fs_vfstype, "ufs") || 1861558Srgrimes (strcmp(fsp->fs_type, FSTAB_RW) && 1871558Srgrimes strcmp(fsp->fs_type, FSTAB_RO)) || 1881558Srgrimes fsp->fs_passno == 0) 1891558Srgrimes return (0); 1901558Srgrimes return (1); 1911558Srgrimes} 1921558Srgrimes 1931558Srgrimes/* 1941558Srgrimes * Check the specified filesystem. 1951558Srgrimes */ 1961558Srgrimes/* ARGSUSED */ 19723675Speterstatic int 1981558Srgrimescheckfilesys(filesys, mntpt, auxdata, child) 1991558Srgrimes char *filesys, *mntpt; 2001558Srgrimes long auxdata; 2017585Sbde int child; 2021558Srgrimes{ 20323675Speter ufs_daddr_t n_ffree, n_bfree; 2041558Srgrimes struct dups *dp; 2051558Srgrimes struct zlncnt *zlnp; 20655275Speter struct statfs *mntbuf; 20755275Speter int cylno; 2081558Srgrimes 2091558Srgrimes if (preen && child) 2101558Srgrimes (void)signal(SIGQUIT, voidquit); 2111558Srgrimes cdevname = filesys; 2121558Srgrimes if (debug && preen) 2131558Srgrimes pwarn("starting\n"); 21423675Speter switch (setup(filesys)) { 21523675Speter case 0: 2161558Srgrimes if (preen) 2171558Srgrimes pfatal("CAN'T CHECK FILE SYSTEM."); 21841477Sjulian return (0); 21923675Speter case -1: 22041477Sjulian pwarn("clean, %ld free ", sblock.fs_cstotal.cs_nffree + 22141477Sjulian sblock.fs_frag * sblock.fs_cstotal.cs_nbfree); 22241477Sjulian printf("(%d frags, %d blocks, %.1f%% fragmentation)\n", 22341477Sjulian sblock.fs_cstotal.cs_nffree, sblock.fs_cstotal.cs_nbfree, 22441477Sjulian sblock.fs_cstotal.cs_nffree * 100.0 / sblock.fs_dsize); 22531904Sbde return (0); 2262153Sdg } 22741477Sjulian 2281558Srgrimes /* 22955275Speter * get the mount point information of the filesystem, if 23055275Speter * it is available. 23155275Speter */ 23255275Speter mntbuf = getmntpt(filesys); 23355275Speter 23455275Speter /* 23534266Sjulian * Cleared if any questions answered no. Used to decide if 23634266Sjulian * the superblock should be marked clean. 23734266Sjulian */ 23834266Sjulian resolved = 1; 23934266Sjulian /* 2401558Srgrimes * 1: scan inodes tallying blocks used 2411558Srgrimes */ 2421558Srgrimes if (preen == 0) { 2431558Srgrimes printf("** Last Mounted on %s\n", sblock.fs_fsmnt); 24455275Speter if (mntbuf != NULL && mntbuf->f_flags & MNT_ROOTFS) 2451558Srgrimes printf("** Root file system\n"); 2461558Srgrimes printf("** Phase 1 - Check Blocks and Sizes\n"); 2471558Srgrimes } 2481558Srgrimes pass1(); 2491558Srgrimes 2501558Srgrimes /* 2511558Srgrimes * 1b: locate first references to duplicates, if any 2521558Srgrimes */ 2531558Srgrimes if (duplist) { 25434266Sjulian if (preen || usedsoftdep) 2551558Srgrimes pfatal("INTERNAL ERROR: dups with -p"); 2561558Srgrimes printf("** Phase 1b - Rescan For More DUPS\n"); 2571558Srgrimes pass1b(); 2581558Srgrimes } 2591558Srgrimes 2601558Srgrimes /* 2611558Srgrimes * 2: traverse directories from root to mark all connected directories 2621558Srgrimes */ 2631558Srgrimes if (preen == 0) 2641558Srgrimes printf("** Phase 2 - Check Pathnames\n"); 2651558Srgrimes pass2(); 2661558Srgrimes 2671558Srgrimes /* 2681558Srgrimes * 3: scan inodes looking for disconnected directories 2691558Srgrimes */ 2701558Srgrimes if (preen == 0) 2711558Srgrimes printf("** Phase 3 - Check Connectivity\n"); 2721558Srgrimes pass3(); 2731558Srgrimes 2741558Srgrimes /* 2751558Srgrimes * 4: scan inodes looking for disconnected files; check reference counts 2761558Srgrimes */ 2771558Srgrimes if (preen == 0) 2781558Srgrimes printf("** Phase 4 - Check Reference Counts\n"); 2791558Srgrimes pass4(); 2801558Srgrimes 2811558Srgrimes /* 2821558Srgrimes * 5: check and repair resource counts in cylinder groups 2831558Srgrimes */ 2841558Srgrimes if (preen == 0) 2851558Srgrimes printf("** Phase 5 - Check Cyl groups\n"); 2861558Srgrimes pass5(); 2871558Srgrimes 2881558Srgrimes /* 2891558Srgrimes * print out summary statistics 2901558Srgrimes */ 2911558Srgrimes n_ffree = sblock.fs_cstotal.cs_nffree; 2921558Srgrimes n_bfree = sblock.fs_cstotal.cs_nbfree; 2931558Srgrimes pwarn("%ld files, %ld used, %ld free ", 2941558Srgrimes n_files, n_blks, n_ffree + sblock.fs_frag * n_bfree); 29531904Sbde printf("(%d frags, %d blocks, %.1f%% fragmentation)\n", 29631904Sbde n_ffree, n_bfree, n_ffree * 100.0 / sblock.fs_dsize); 2971558Srgrimes if (debug && 2981558Srgrimes (n_files -= maxino - ROOTINO - sblock.fs_cstotal.cs_nifree)) 29931904Sbde printf("%d files missing\n", n_files); 3001558Srgrimes if (debug) { 3011558Srgrimes n_blks += sblock.fs_ncg * 3021558Srgrimes (cgdmin(&sblock, 0) - cgsblock(&sblock, 0)); 3031558Srgrimes n_blks += cgsblock(&sblock, 0) - cgbase(&sblock, 0); 3041558Srgrimes n_blks += howmany(sblock.fs_cssize, sblock.fs_fsize); 3051558Srgrimes if (n_blks -= maxfsblock - (n_ffree + sblock.fs_frag * n_bfree)) 30631904Sbde printf("%d blocks missing\n", n_blks); 3071558Srgrimes if (duplist != NULL) { 3081558Srgrimes printf("The following duplicate blocks remain:"); 3091558Srgrimes for (dp = duplist; dp; dp = dp->next) 31031904Sbde printf(" %d,", dp->dup); 3111558Srgrimes printf("\n"); 3121558Srgrimes } 3131558Srgrimes if (zlnhead != NULL) { 3141558Srgrimes printf("The following zero link count inodes remain:"); 3151558Srgrimes for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 31631904Sbde printf(" %u,", zlnp->zlncnt); 3171558Srgrimes printf("\n"); 3181558Srgrimes } 3191558Srgrimes } 3201558Srgrimes zlnhead = (struct zlncnt *)0; 3211558Srgrimes duplist = (struct dups *)0; 3221558Srgrimes muldup = (struct dups *)0; 3231558Srgrimes inocleanup(); 3242179Sdg if (fsmodified) { 32541474Sjulian sblock.fs_time = time(NULL); 3261558Srgrimes sbdirty(); 3271558Srgrimes } 3281558Srgrimes if (cvtlevel && sblk.b_dirty) { 3298871Srgrimes /* 3301558Srgrimes * Write out the duplicate super blocks 3311558Srgrimes */ 3321558Srgrimes for (cylno = 0; cylno < sblock.fs_ncg; cylno++) 3331558Srgrimes bwrite(fswritefd, (char *)&sblock, 3341558Srgrimes fsbtodb(&sblock, cgsblock(&sblock, cylno)), SBSIZE); 3351558Srgrimes } 33634266Sjulian if (rerun) 33734266Sjulian resolved = 0; 33855275Speter 33955275Speter /* Check to see if the filesystem if mounted read-write */ 34055275Speter if (mntbuf != NULL && (mntbuf->f_flags & MNT_RDONLY) == 0) 34155275Speter resolved = 0; 34234266Sjulian ckfini(resolved); 34341474Sjulian 34441474Sjulian for (cylno = 0; cylno < sblock.fs_ncg; cylno++) 34541474Sjulian if (inostathead[cylno].il_stat != NULL) 34641474Sjulian free((char *)inostathead[cylno].il_stat); 34741474Sjulian free((char *)inostathead); 34841474Sjulian inostathead = NULL; 34941474Sjulian if (fsmodified && !preen) 3501558Srgrimes printf("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 35118808Sguido if (rerun) 35218808Sguido printf("\n***** PLEASE RERUN FSCK *****\n"); 35355275Speter 35455275Speter /* 35555275Speter * Always do a mount update if the current filesystem 35655275Speter * is mounted read-only. 35755275Speter */ 35855275Speter if (mntbuf != NULL && mntbuf->f_flags & MNT_RDONLY) { 35923675Speter struct ufs_args args; 36023675Speter int ret; 36155275Speter 36255275Speter args.fspec = 0; 36355275Speter args.export.ex_flags = 0; 36455275Speter args.export.ex_root = 0; 36555275Speter mntbuf->f_flags |= MNT_UPDATE | MNT_RELOAD; 36655275Speter ret = mount("ufs", mntbuf->f_mntonname , mntbuf->f_flags, &args); 36755275Speter if (ret < 0) 36855275Speter perror("mount"); 36955275Speter if (ret == 0) 37055275Speter return 0; 37141474Sjulian if (!fsmodified) 37241474Sjulian return (0); 3731558Srgrimes if (!preen) 3741558Srgrimes printf("\n***** REBOOT NOW *****\n"); 3751558Srgrimes sync(); 3761558Srgrimes return (4); 3771558Srgrimes } 3781558Srgrimes return (0); 3791558Srgrimes} 38055275Speter 38155275Speter/* 38255275Speter * get the directory the device is mounted on. 38355275Speter */ 38455275Speterstatic struct statfs * 38555275Spetergetmntpt(name) 38655275Speter const char *name; 38755275Speter{ 38855275Speter struct statfs *mntbuf; 38955275Speter struct stat devstat, mntdevstat; 39055275Speter char device[MAXPATHLEN]; 39155275Speter int i, mntsize; 39255275Speter 39355275Speter if (realpath(name, device) == NULL) 39455275Speter return (NULL); 39555275Speter 39655275Speter if (stat(device, &devstat) != 0 || 39755275Speter !(S_ISCHR(devstat.st_mode) || S_ISBLK(devstat.st_mode))) 39855275Speter return (NULL); 39955275Speter 40055275Speter mntsize = getmntinfo(&mntbuf, MNT_NOWAIT); 40155275Speter for (i = 0; i < mntsize; i++) { 40255275Speter if (realpath(mntbuf[i].f_mntfromname, device) == NULL || 40355275Speter stat(device, &mntdevstat) != 0 || 40455275Speter !(S_ISCHR(mntdevstat.st_mode) || 40555275Speter S_ISBLK(mntdevstat.st_mode))) 40655275Speter continue; 40755275Speter if (mntdevstat.st_rdev == devstat.st_rdev) 40855275Speter return (&mntbuf[i]); 40955275Speter } 41055275Speter return (NULL); 41155275Speter} 412