main.c revision 93103
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 441558Srgrimes#endif /* not lint */ 451558Srgrimes 4693103Smarkm#include <sys/cdefs.h> 4793103Smarkm__FBSDID("$FreeBSD: head/sbin/fsck_ffs/main.c 93103 2002-03-24 15:17:53Z markm $"); 4893103Smarkm 491558Srgrimes#include <sys/param.h> 5055275Speter#include <sys/stat.h> 5175557Smckusick#include <sys/file.h> 521558Srgrimes#include <sys/time.h> 531558Srgrimes#include <sys/mount.h> 5440918Smjacob#include <sys/resource.h> 5586514Siedowse#include <sys/sysctl.h> 5623675Speter 571558Srgrimes#include <ufs/ufs/dinode.h> 5823675Speter#include <ufs/ufs/ufsmount.h> 591558Srgrimes#include <ufs/ffs/fs.h> 6023675Speter 6123675Speter#include <err.h> 6255725Speter#include <errno.h> 631558Srgrimes#include <fstab.h> 6455725Speter#include <paths.h> 6586514Siedowse#include <string.h> 6623675Speter 671558Srgrimes#include "fsck.h" 681558Srgrimes 6992839Simpstatic void usage(void) __dead2; 7092839Simpstatic int argtoi(int flag, char *req, char *str, int base); 7192839Simpstatic int checkfilesys(char *filesys); 7292839Simpstatic struct statfs *getmntpt(const char *); 7323675Speter 747585Sbdeint 7592839Simpmain(int argc, char *argv[]) 761558Srgrimes{ 771558Srgrimes int ch; 7841474Sjulian struct rlimit rlimit; 7966861Sadrian int ret = 0; 801558Srgrimes 811558Srgrimes sync(); 8266861Sadrian skipclean = 1; 8375927Smckusick while ((ch = getopt(argc, argv, "b:Bc:dfFm:npy")) != -1) { 841558Srgrimes switch (ch) { 851558Srgrimes case 'b': 8666861Sadrian skipclean = 0; 871558Srgrimes bflag = argtoi('b', "number", optarg, 10); 881558Srgrimes printf("Alternate super block location: %d\n", bflag); 891558Srgrimes break; 901558Srgrimes 9174556Smckusick case 'B': 9274556Smckusick bkgrdflag = 1; 9374556Smckusick break; 9474556Smckusick 951558Srgrimes case 'c': 9666861Sadrian skipclean = 0; 971558Srgrimes cvtlevel = argtoi('c', "conversion level", optarg, 10); 981558Srgrimes break; 998871Srgrimes 1001558Srgrimes case 'd': 1011558Srgrimes debug++; 1021558Srgrimes break; 1031558Srgrimes 1042153Sdg case 'f': 10566861Sadrian skipclean = 0; 1062153Sdg break; 1072153Sdg 10875927Smckusick case 'F': 10975927Smckusick bkgrdcheck = 1; 11075927Smckusick break; 11175927Smckusick 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) 15786514Siedowse (void)checkfilesys(*argv++); 15841474Sjulian 1591558Srgrimes if (returntosingle) 16066861Sadrian ret = 2; 1611558Srgrimes exit(ret); 1621558Srgrimes} 1631558Srgrimes 16423675Speterstatic int 16592839Simpargtoi(int flag, char *req, char *str, int base) 1661558Srgrimes{ 1671558Srgrimes char *cp; 1681558Srgrimes int ret; 1691558Srgrimes 1701558Srgrimes ret = (int)strtol(str, &cp, base); 1711558Srgrimes if (cp == str || *cp) 17223675Speter errx(EEXIT, "-%c flag requires a %s", flag, req); 1731558Srgrimes return (ret); 1741558Srgrimes} 1751558Srgrimes 1761558Srgrimes/* 1771558Srgrimes * Check the specified filesystem. 1781558Srgrimes */ 1791558Srgrimes/* ARGSUSED */ 18023675Speterstatic int 18192839Simpcheckfilesys(char *filesys) 1821558Srgrimes{ 18323675Speter ufs_daddr_t n_ffree, n_bfree; 18474556Smckusick struct ufs_args args; 1851558Srgrimes struct dups *dp; 18674556Smckusick struct statfs *mntp; 1871558Srgrimes struct zlncnt *zlnp; 18874556Smckusick ufs_daddr_t blks; 18974556Smckusick ufs_daddr_t files; 19075927Smckusick int cylno, size; 1911558Srgrimes 1921558Srgrimes cdevname = filesys; 1931558Srgrimes if (debug && preen) 1941558Srgrimes pwarn("starting\n"); 19575927Smckusick /* 19675927Smckusick * Make best effort to get the disk name. Check first to see 19775927Smckusick * if it is listed among the mounted filesystems. Failing that 19875927Smckusick * check to see if it is listed in /etc/fstab. 19975927Smckusick */ 20075927Smckusick mntp = getmntpt(filesys); 20175927Smckusick if (mntp != NULL) 20275927Smckusick filesys = mntp->f_mntfromname; 20375927Smckusick else 20475927Smckusick filesys = blockcheck(filesys); 20575927Smckusick /* 20675927Smckusick * If -F flag specified, check to see whether a background check 20775927Smckusick * is possible and needed. If possible and needed, exit with 20875927Smckusick * status zero. Otherwise exit with status non-zero. A non-zero 20975927Smckusick * exit status will cause a foreground check to be run. 21075927Smckusick */ 21175557Smckusick sblock_init(); 21275927Smckusick if (bkgrdcheck) { 21375927Smckusick if ((fsreadfd = open(filesys, O_RDONLY)) < 0 || readsb(0) == 0) 21475927Smckusick exit(3); /* Cannot read superblock */ 21575927Smckusick close(fsreadfd); 21675927Smckusick if (sblock.fs_flags & FS_NEEDSFSCK) 21775927Smckusick exit(4); /* Earlier background failed */ 21875927Smckusick if ((sblock.fs_flags & FS_DOSOFTDEP) == 0) 21975927Smckusick exit(5); /* Not running soft updates */ 22075927Smckusick size = MIBSIZE; 22175927Smckusick if (sysctlnametomib("vfs.ffs.adjrefcnt", adjrefcnt, &size) < 0) 22275927Smckusick exit(6); /* Lacks kernel support */ 22375927Smckusick if ((mntp == NULL && sblock.fs_clean == 1) || 22475927Smckusick (mntp != NULL && (sblock.fs_flags & FS_UNCLEAN) == 0)) 22575927Smckusick exit(7); /* Filesystem clean, report it now */ 22675927Smckusick exit(0); 22775927Smckusick } 22874556Smckusick /* 22974556Smckusick * If we are to do a background check: 23074556Smckusick * Get the mount point information of the filesystem 23174556Smckusick * create snapshot file 23274556Smckusick * return created snapshot file 23374556Smckusick * if not found, clear bkgrdflag and proceed with normal fsck 23474556Smckusick */ 23574556Smckusick if (bkgrdflag) { 23674556Smckusick if (mntp == NULL) { 23774556Smckusick bkgrdflag = 0; 23875557Smckusick pfatal("NOT MOUNTED, CANNOT RUN IN BACKGROUND\n"); 23974556Smckusick } else if ((mntp->f_flags & MNT_SOFTDEP) == 0) { 24074556Smckusick bkgrdflag = 0; 24175557Smckusick pfatal("NOT USING SOFT UPDATES, %s\n", 24275557Smckusick "CANNOT RUN IN BACKGROUND"); 24374556Smckusick } else if ((mntp->f_flags & MNT_RDONLY) != 0) { 24474556Smckusick bkgrdflag = 0; 24575557Smckusick pfatal("MOUNTED READ-ONLY, CANNOT RUN IN BACKGROUND\n"); 24675557Smckusick } else if ((fsreadfd = open(filesys, O_RDONLY)) >= 0) { 24775557Smckusick if (readsb(0) != 0) { 24875557Smckusick if (sblock.fs_flags & FS_NEEDSFSCK) { 24975557Smckusick bkgrdflag = 0; 25075557Smckusick pfatal("UNEXPECTED INCONSISTENCY, %s\n", 25175557Smckusick "CANNOT RUN IN BACKGROUND\n"); 25275557Smckusick } 25375557Smckusick if ((sblock.fs_flags & FS_UNCLEAN) == 0 && 25475557Smckusick skipclean && preen) { 25575557Smckusick /* 25675557Smckusick * filesystem is clean; 25775557Smckusick * skip snapshot and report it clean 25875557Smckusick */ 25975557Smckusick pwarn("FILESYSTEM CLEAN; %s\n", 26075557Smckusick "SKIPPING CHECKS"); 26175557Smckusick goto clean; 26275557Smckusick } 26375557Smckusick } 26475557Smckusick close(fsreadfd); 26575557Smckusick } 26675557Smckusick if (bkgrdflag) { 26774556Smckusick snprintf(snapname, sizeof snapname, "%s/.fsck_snapshot", 26874556Smckusick mntp->f_mntonname); 26974556Smckusick args.fspec = snapname; 27074556Smckusick while (mount("ffs", mntp->f_mntonname, 27174556Smckusick mntp->f_flags | MNT_UPDATE | MNT_SNAPSHOT, 27274556Smckusick &args) < 0) { 27374556Smckusick if (errno == EEXIST && unlink(snapname) == 0) 27474556Smckusick continue; 27574556Smckusick bkgrdflag = 0; 27675557Smckusick pfatal("CANNOT CREATE SNAPSHOT %s: %s\n", 27774556Smckusick snapname, strerror(errno)); 27874556Smckusick break; 27974556Smckusick } 28074556Smckusick if (bkgrdflag != 0) 28174556Smckusick filesys = snapname; 28274556Smckusick } 28374556Smckusick } 28474556Smckusick 28523675Speter switch (setup(filesys)) { 28623675Speter case 0: 2871558Srgrimes if (preen) 2881558Srgrimes pfatal("CAN'T CHECK FILE SYSTEM."); 28941477Sjulian return (0); 29023675Speter case -1: 29175557Smckusick clean: 29286514Siedowse pwarn("clean, %ld free ", (long)(sblock.fs_cstotal.cs_nffree + 29386514Siedowse sblock.fs_frag * sblock.fs_cstotal.cs_nbfree)); 29441477Sjulian printf("(%d frags, %d blocks, %.1f%% fragmentation)\n", 29541477Sjulian sblock.fs_cstotal.cs_nffree, sblock.fs_cstotal.cs_nbfree, 29641477Sjulian sblock.fs_cstotal.cs_nffree * 100.0 / sblock.fs_dsize); 29731904Sbde return (0); 2982153Sdg } 29955275Speter 30055275Speter /* 30134266Sjulian * Cleared if any questions answered no. Used to decide if 30234266Sjulian * the superblock should be marked clean. 30334266Sjulian */ 30434266Sjulian resolved = 1; 30534266Sjulian /* 3061558Srgrimes * 1: scan inodes tallying blocks used 3071558Srgrimes */ 3081558Srgrimes if (preen == 0) { 3091558Srgrimes printf("** Last Mounted on %s\n", sblock.fs_fsmnt); 31074556Smckusick if (mntp != NULL && mntp->f_flags & MNT_ROOTFS) 3111558Srgrimes printf("** Root file system\n"); 3121558Srgrimes printf("** Phase 1 - Check Blocks and Sizes\n"); 3131558Srgrimes } 3141558Srgrimes pass1(); 3151558Srgrimes 3161558Srgrimes /* 3171558Srgrimes * 1b: locate first references to duplicates, if any 3181558Srgrimes */ 3191558Srgrimes if (duplist) { 32034266Sjulian if (preen || usedsoftdep) 3211558Srgrimes pfatal("INTERNAL ERROR: dups with -p"); 3221558Srgrimes printf("** Phase 1b - Rescan For More DUPS\n"); 3231558Srgrimes pass1b(); 3241558Srgrimes } 3251558Srgrimes 3261558Srgrimes /* 3271558Srgrimes * 2: traverse directories from root to mark all connected directories 3281558Srgrimes */ 3291558Srgrimes if (preen == 0) 3301558Srgrimes printf("** Phase 2 - Check Pathnames\n"); 3311558Srgrimes pass2(); 3321558Srgrimes 3331558Srgrimes /* 3341558Srgrimes * 3: scan inodes looking for disconnected directories 3351558Srgrimes */ 3361558Srgrimes if (preen == 0) 3371558Srgrimes printf("** Phase 3 - Check Connectivity\n"); 3381558Srgrimes pass3(); 3391558Srgrimes 3401558Srgrimes /* 3411558Srgrimes * 4: scan inodes looking for disconnected files; check reference counts 3421558Srgrimes */ 3431558Srgrimes if (preen == 0) 3441558Srgrimes printf("** Phase 4 - Check Reference Counts\n"); 3451558Srgrimes pass4(); 3461558Srgrimes 3471558Srgrimes /* 3481558Srgrimes * 5: check and repair resource counts in cylinder groups 3491558Srgrimes */ 3501558Srgrimes if (preen == 0) 3511558Srgrimes printf("** Phase 5 - Check Cyl groups\n"); 3521558Srgrimes pass5(); 3531558Srgrimes 3541558Srgrimes /* 3551558Srgrimes * print out summary statistics 3561558Srgrimes */ 3571558Srgrimes n_ffree = sblock.fs_cstotal.cs_nffree; 3581558Srgrimes n_bfree = sblock.fs_cstotal.cs_nbfree; 35974556Smckusick files = maxino - ROOTINO - sblock.fs_cstotal.cs_nifree - n_files; 36074556Smckusick blks = n_blks + 36174556Smckusick sblock.fs_ncg * (cgdmin(&sblock, 0) - cgsblock(&sblock, 0)); 36274556Smckusick blks += cgsblock(&sblock, 0) - cgbase(&sblock, 0); 36374556Smckusick blks += howmany(sblock.fs_cssize, sblock.fs_fsize); 36474556Smckusick blks = maxfsblock - (n_ffree + sblock.fs_frag * n_bfree) - blks; 36574556Smckusick if (bkgrdflag && (files > 0 || blks > 0)) { 36674556Smckusick countdirs = sblock.fs_cstotal.cs_ndir - countdirs; 36786514Siedowse pwarn("Reclaimed: %ld directories, %ld files, %d fragments\n", 36886514Siedowse countdirs, (long)files - countdirs, blks); 36974556Smckusick } 3701558Srgrimes pwarn("%ld files, %ld used, %ld free ", 37186514Siedowse (long)n_files, (long)n_blks, (long)(n_ffree + 37286514Siedowse sblock.fs_frag * n_bfree)); 37331904Sbde printf("(%d frags, %d blocks, %.1f%% fragmentation)\n", 37431904Sbde n_ffree, n_bfree, n_ffree * 100.0 / sblock.fs_dsize); 3751558Srgrimes if (debug) { 37674556Smckusick if (files < 0) 37774556Smckusick printf("%d inodes missing\n", -files); 37874556Smckusick if (blks < 0) 37974556Smckusick printf("%d blocks missing\n", -blks); 3801558Srgrimes if (duplist != NULL) { 3811558Srgrimes printf("The following duplicate blocks remain:"); 3821558Srgrimes for (dp = duplist; dp; dp = dp->next) 38331904Sbde printf(" %d,", dp->dup); 3841558Srgrimes printf("\n"); 3851558Srgrimes } 3861558Srgrimes if (zlnhead != NULL) { 3871558Srgrimes printf("The following zero link count inodes remain:"); 3881558Srgrimes for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 38931904Sbde printf(" %u,", zlnp->zlncnt); 3901558Srgrimes printf("\n"); 3911558Srgrimes } 3921558Srgrimes } 3931558Srgrimes zlnhead = (struct zlncnt *)0; 3941558Srgrimes duplist = (struct dups *)0; 3951558Srgrimes muldup = (struct dups *)0; 3961558Srgrimes inocleanup(); 3972179Sdg if (fsmodified) { 39841474Sjulian sblock.fs_time = time(NULL); 3991558Srgrimes sbdirty(); 4001558Srgrimes } 4011558Srgrimes if (cvtlevel && sblk.b_dirty) { 4028871Srgrimes /* 4031558Srgrimes * Write out the duplicate super blocks 4041558Srgrimes */ 4051558Srgrimes for (cylno = 0; cylno < sblock.fs_ncg; cylno++) 4061558Srgrimes bwrite(fswritefd, (char *)&sblock, 4071558Srgrimes fsbtodb(&sblock, cgsblock(&sblock, cylno)), SBSIZE); 4081558Srgrimes } 40934266Sjulian if (rerun) 41034266Sjulian resolved = 0; 41155275Speter 41255725Speter /* 41355773Speter * Check to see if the filesystem is mounted read-write. 41455725Speter */ 41574556Smckusick if (bkgrdflag == 0 && mntp != NULL && (mntp->f_flags & MNT_RDONLY) == 0) 41655275Speter resolved = 0; 41734266Sjulian ckfini(resolved); 41841474Sjulian 41941474Sjulian for (cylno = 0; cylno < sblock.fs_ncg; cylno++) 42041474Sjulian if (inostathead[cylno].il_stat != NULL) 42141474Sjulian free((char *)inostathead[cylno].il_stat); 42241474Sjulian free((char *)inostathead); 42341474Sjulian inostathead = NULL; 42441474Sjulian if (fsmodified && !preen) 4251558Srgrimes printf("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 42618808Sguido if (rerun) 42718808Sguido printf("\n***** PLEASE RERUN FSCK *****\n"); 42874556Smckusick if (mntp != NULL) { 42923675Speter struct ufs_args args; 43023675Speter int ret; 43155725Speter /* 43255725Speter * We modified a mounted filesystem. Do a mount update on 43355725Speter * it unless it is read-write, so we can continue using it 43455725Speter * as safely as possible. 43555725Speter */ 43674556Smckusick if (mntp->f_flags & MNT_RDONLY) { 43755725Speter args.fspec = 0; 43855725Speter args.export.ex_flags = 0; 43955725Speter args.export.ex_root = 0; 44074556Smckusick ret = mount("ufs", mntp->f_mntonname, 44174556Smckusick mntp->f_flags | MNT_UPDATE | MNT_RELOAD, &args); 44255725Speter if (ret == 0) 44355725Speter return (0); 44455725Speter pwarn("mount reload of '%s' failed: %s\n\n", 44574556Smckusick mntp->f_mntonname, strerror(errno)); 44655725Speter } 44741474Sjulian if (!fsmodified) 44841474Sjulian return (0); 4491558Srgrimes if (!preen) 4501558Srgrimes printf("\n***** REBOOT NOW *****\n"); 4511558Srgrimes sync(); 4521558Srgrimes return (4); 4531558Srgrimes } 4541558Srgrimes return (0); 4551558Srgrimes} 45655275Speter 45755275Speter/* 45875927Smckusick * Get the mount point information for name. 45955275Speter */ 46055275Speterstatic struct statfs * 46192839Simpgetmntpt(const char *name) 46255275Speter{ 46355725Speter struct stat devstat, mntdevstat; 46455725Speter char device[sizeof(_PATH_DEV) - 1 + MNAMELEN]; 46555725Speter char *devname; 46675927Smckusick struct statfs *mntbuf, *statfsp; 46775927Smckusick int i, mntsize, isdev; 46855275Speter 46975927Smckusick if (stat(name, &devstat) != 0) 47055275Speter return (NULL); 47175927Smckusick if (S_ISCHR(devstat.st_mode) || S_ISBLK(devstat.st_mode)) 47275927Smckusick isdev = 1; 47375927Smckusick else 47475927Smckusick isdev = 0; 47555275Speter mntsize = getmntinfo(&mntbuf, MNT_NOWAIT); 47655275Speter for (i = 0; i < mntsize; i++) { 47775927Smckusick statfsp = &mntbuf[i]; 47875927Smckusick devname = statfsp->f_mntfromname; 47955725Speter if (*devname != '/') { 48055725Speter strcpy(device, _PATH_DEV); 48155725Speter strcat(device, devname); 48275927Smckusick strcpy(statfsp->f_mntfromname, device); 48355725Speter } 48475927Smckusick if (isdev == 0) { 48575927Smckusick if (strcmp(name, statfsp->f_mntonname)) 48675927Smckusick continue; 48775927Smckusick return (statfsp); 48875927Smckusick } 48955773Speter if (stat(devname, &mntdevstat) == 0 && 49055725Speter mntdevstat.st_rdev == devstat.st_rdev) 49175927Smckusick return (statfsp); 49255275Speter } 49375927Smckusick statfsp = NULL; 49475927Smckusick return (statfsp); 49555275Speter} 49666861Sadrian 49766861Sadrianstatic void 49892839Simpusage(void) 49966861Sadrian{ 50066861Sadrian (void) fprintf(stderr, 50176143Smckusick "Usage: %s [-BFpfny] [-b block] [-c level] [-m mode] " 50266861Sadrian "filesystem ...\n", 50393103Smarkm getprogname()); 50466861Sadrian exit(1); 50566861Sadrian} 506