main.c revision 102231
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 102231 2002-08-21 18:11:48Z trhodes $"); 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> 5698542Smckusick#include <sys/disklabel.h> 5723675Speter 581558Srgrimes#include <ufs/ufs/dinode.h> 5923675Speter#include <ufs/ufs/ufsmount.h> 601558Srgrimes#include <ufs/ffs/fs.h> 6123675Speter 6223675Speter#include <err.h> 6355725Speter#include <errno.h> 641558Srgrimes#include <fstab.h> 6555725Speter#include <paths.h> 66101037Smux#include <stdint.h> 6786514Siedowse#include <string.h> 6823675Speter 691558Srgrimes#include "fsck.h" 701558Srgrimes 7192839Simpstatic void usage(void) __dead2; 72100935Sphkstatic int argtoi(int flag, const char *req, const char *str, int base); 7392839Simpstatic int checkfilesys(char *filesys); 7492839Simpstatic struct statfs *getmntpt(const char *); 7523675Speter 767585Sbdeint 7792839Simpmain(int argc, char *argv[]) 781558Srgrimes{ 791558Srgrimes int ch; 8041474Sjulian struct rlimit rlimit; 8166861Sadrian int ret = 0; 821558Srgrimes 831558Srgrimes sync(); 8466861Sadrian skipclean = 1; 8575927Smckusick while ((ch = getopt(argc, argv, "b:Bc:dfFm:npy")) != -1) { 861558Srgrimes switch (ch) { 871558Srgrimes case 'b': 8866861Sadrian skipclean = 0; 891558Srgrimes bflag = argtoi('b', "number", optarg, 10); 901558Srgrimes printf("Alternate super block location: %d\n", bflag); 911558Srgrimes break; 921558Srgrimes 9374556Smckusick case 'B': 9474556Smckusick bkgrdflag = 1; 9574556Smckusick break; 9674556Smckusick 971558Srgrimes case 'c': 9866861Sadrian skipclean = 0; 991558Srgrimes cvtlevel = argtoi('c', "conversion level", optarg, 10); 10098542Smckusick if (cvtlevel < 3) 10198542Smckusick errx(EEXIT, "cannot do level %d conversion", 10298542Smckusick cvtlevel); 1031558Srgrimes break; 1048871Srgrimes 1051558Srgrimes case 'd': 1061558Srgrimes debug++; 1071558Srgrimes break; 1081558Srgrimes 1092153Sdg case 'f': 11066861Sadrian skipclean = 0; 1112153Sdg break; 1122153Sdg 11375927Smckusick case 'F': 11475927Smckusick bkgrdcheck = 1; 11575927Smckusick break; 11675927Smckusick 1171558Srgrimes case 'm': 1181558Srgrimes lfmode = argtoi('m', "mode", optarg, 8); 1191558Srgrimes if (lfmode &~ 07777) 12023675Speter errx(EEXIT, "bad mode to -m: %o", lfmode); 1211558Srgrimes printf("** lost+found creation mode %o\n", lfmode); 1221558Srgrimes break; 1231558Srgrimes 1241558Srgrimes case 'n': 1251558Srgrimes nflag++; 1261558Srgrimes yflag = 0; 1271558Srgrimes break; 1281558Srgrimes 12966861Sadrian case 'p': 13066861Sadrian preen++; 13166861Sadrian break; 13266861Sadrian 1331558Srgrimes case 'y': 1341558Srgrimes yflag++; 1351558Srgrimes nflag = 0; 1361558Srgrimes break; 1371558Srgrimes 1381558Srgrimes default: 13966861Sadrian usage(); 1401558Srgrimes } 1411558Srgrimes } 1421558Srgrimes argc -= optind; 1431558Srgrimes argv += optind; 14466861Sadrian 14566861Sadrian if (!argc) 14666861Sadrian usage(); 14766861Sadrian 1481558Srgrimes if (signal(SIGINT, SIG_IGN) != SIG_IGN) 1491558Srgrimes (void)signal(SIGINT, catch); 1501558Srgrimes if (preen) 1511558Srgrimes (void)signal(SIGQUIT, catchquit); 15270050Siedowse signal(SIGINFO, infohandler); 15341474Sjulian /* 15441474Sjulian * Push up our allowed memory limit so we can cope 155102231Strhodes * with huge file systems. 15641474Sjulian */ 15741474Sjulian if (getrlimit(RLIMIT_DATA, &rlimit) == 0) { 15841474Sjulian rlimit.rlim_cur = rlimit.rlim_max; 15941474Sjulian (void)setrlimit(RLIMIT_DATA, &rlimit); 16041474Sjulian } 16166861Sadrian while (argc-- > 0) 16286514Siedowse (void)checkfilesys(*argv++); 16341474Sjulian 1641558Srgrimes if (returntosingle) 16566861Sadrian ret = 2; 1661558Srgrimes exit(ret); 1671558Srgrimes} 1681558Srgrimes 16923675Speterstatic int 170100935Sphkargtoi(int flag, const char *req, const char *str, int base) 1711558Srgrimes{ 1721558Srgrimes char *cp; 1731558Srgrimes int ret; 1741558Srgrimes 1751558Srgrimes ret = (int)strtol(str, &cp, base); 1761558Srgrimes if (cp == str || *cp) 17723675Speter errx(EEXIT, "-%c flag requires a %s", flag, req); 1781558Srgrimes return (ret); 1791558Srgrimes} 1801558Srgrimes 1811558Srgrimes/* 182102231Strhodes * Check the specified file system. 1831558Srgrimes */ 1841558Srgrimes/* ARGSUSED */ 18523675Speterstatic int 18692839Simpcheckfilesys(char *filesys) 1871558Srgrimes{ 18898542Smckusick ufs2_daddr_t n_ffree, n_bfree; 18974556Smckusick struct ufs_args args; 1901558Srgrimes struct dups *dp; 19174556Smckusick struct statfs *mntp; 1921558Srgrimes struct zlncnt *zlnp; 19398542Smckusick ufs2_daddr_t blks; 194101037Smux int cylno, ret; 19598542Smckusick ino_t files; 196101037Smux size_t size; 1971558Srgrimes 1981558Srgrimes cdevname = filesys; 1991558Srgrimes if (debug && preen) 2001558Srgrimes pwarn("starting\n"); 20175927Smckusick /* 20275927Smckusick * Make best effort to get the disk name. Check first to see 203102231Strhodes * if it is listed among the mounted file systems. Failing that 20475927Smckusick * check to see if it is listed in /etc/fstab. 20575927Smckusick */ 20675927Smckusick mntp = getmntpt(filesys); 20775927Smckusick if (mntp != NULL) 20875927Smckusick filesys = mntp->f_mntfromname; 20975927Smckusick else 21075927Smckusick filesys = blockcheck(filesys); 21175927Smckusick /* 21275927Smckusick * If -F flag specified, check to see whether a background check 21375927Smckusick * is possible and needed. If possible and needed, exit with 21475927Smckusick * status zero. Otherwise exit with status non-zero. A non-zero 21575927Smckusick * exit status will cause a foreground check to be run. 21675927Smckusick */ 21775557Smckusick sblock_init(); 21875927Smckusick if (bkgrdcheck) { 21975927Smckusick if ((fsreadfd = open(filesys, O_RDONLY)) < 0 || readsb(0) == 0) 22075927Smckusick exit(3); /* Cannot read superblock */ 22175927Smckusick close(fsreadfd); 22275927Smckusick if (sblock.fs_flags & FS_NEEDSFSCK) 22375927Smckusick exit(4); /* Earlier background failed */ 22475927Smckusick if ((sblock.fs_flags & FS_DOSOFTDEP) == 0) 22575927Smckusick exit(5); /* Not running soft updates */ 22675927Smckusick size = MIBSIZE; 22775927Smckusick if (sysctlnametomib("vfs.ffs.adjrefcnt", adjrefcnt, &size) < 0) 22875927Smckusick exit(6); /* Lacks kernel support */ 22975927Smckusick if ((mntp == NULL && sblock.fs_clean == 1) || 23075927Smckusick (mntp != NULL && (sblock.fs_flags & FS_UNCLEAN) == 0)) 23175927Smckusick exit(7); /* Filesystem clean, report it now */ 23275927Smckusick exit(0); 23375927Smckusick } 23474556Smckusick /* 23574556Smckusick * If we are to do a background check: 236102231Strhodes * Get the mount point information of the file system 23774556Smckusick * create snapshot file 23874556Smckusick * return created snapshot file 23974556Smckusick * if not found, clear bkgrdflag and proceed with normal fsck 24074556Smckusick */ 24174556Smckusick if (bkgrdflag) { 24274556Smckusick if (mntp == NULL) { 24374556Smckusick bkgrdflag = 0; 24475557Smckusick pfatal("NOT MOUNTED, CANNOT RUN IN BACKGROUND\n"); 24574556Smckusick } else if ((mntp->f_flags & MNT_SOFTDEP) == 0) { 24674556Smckusick bkgrdflag = 0; 24775557Smckusick pfatal("NOT USING SOFT UPDATES, %s\n", 24875557Smckusick "CANNOT RUN IN BACKGROUND"); 24974556Smckusick } else if ((mntp->f_flags & MNT_RDONLY) != 0) { 25074556Smckusick bkgrdflag = 0; 25175557Smckusick pfatal("MOUNTED READ-ONLY, CANNOT RUN IN BACKGROUND\n"); 25275557Smckusick } else if ((fsreadfd = open(filesys, O_RDONLY)) >= 0) { 25375557Smckusick if (readsb(0) != 0) { 25475557Smckusick if (sblock.fs_flags & FS_NEEDSFSCK) { 25575557Smckusick bkgrdflag = 0; 25675557Smckusick pfatal("UNEXPECTED INCONSISTENCY, %s\n", 25775557Smckusick "CANNOT RUN IN BACKGROUND\n"); 25875557Smckusick } 25975557Smckusick if ((sblock.fs_flags & FS_UNCLEAN) == 0 && 26075557Smckusick skipclean && preen) { 26175557Smckusick /* 262102231Strhodes * file system is clean; 26375557Smckusick * skip snapshot and report it clean 26475557Smckusick */ 26575557Smckusick pwarn("FILESYSTEM CLEAN; %s\n", 26675557Smckusick "SKIPPING CHECKS"); 26775557Smckusick goto clean; 26875557Smckusick } 26975557Smckusick } 27075557Smckusick close(fsreadfd); 27175557Smckusick } 27275557Smckusick if (bkgrdflag) { 27374556Smckusick snprintf(snapname, sizeof snapname, "%s/.fsck_snapshot", 27474556Smckusick mntp->f_mntonname); 27574556Smckusick args.fspec = snapname; 27674556Smckusick while (mount("ffs", mntp->f_mntonname, 27774556Smckusick mntp->f_flags | MNT_UPDATE | MNT_SNAPSHOT, 27874556Smckusick &args) < 0) { 27974556Smckusick if (errno == EEXIST && unlink(snapname) == 0) 28074556Smckusick continue; 28174556Smckusick bkgrdflag = 0; 28275557Smckusick pfatal("CANNOT CREATE SNAPSHOT %s: %s\n", 28374556Smckusick snapname, strerror(errno)); 28474556Smckusick break; 28574556Smckusick } 28674556Smckusick if (bkgrdflag != 0) 28774556Smckusick filesys = snapname; 28874556Smckusick } 28974556Smckusick } 29074556Smckusick 29123675Speter switch (setup(filesys)) { 29223675Speter case 0: 2931558Srgrimes if (preen) 2941558Srgrimes pfatal("CAN'T CHECK FILE SYSTEM."); 29541477Sjulian return (0); 29623675Speter case -1: 29775557Smckusick clean: 29886514Siedowse pwarn("clean, %ld free ", (long)(sblock.fs_cstotal.cs_nffree + 29986514Siedowse sblock.fs_frag * sblock.fs_cstotal.cs_nbfree)); 300100935Sphk printf("(%lld frags, %lld blocks, %.1f%% fragmentation)\n", 301100935Sphk (long long)sblock.fs_cstotal.cs_nffree, 302100935Sphk (long long)sblock.fs_cstotal.cs_nbfree, 30341477Sjulian sblock.fs_cstotal.cs_nffree * 100.0 / sblock.fs_dsize); 30431904Sbde return (0); 3052153Sdg } 30655275Speter 30755275Speter /* 30834266Sjulian * Cleared if any questions answered no. Used to decide if 30934266Sjulian * the superblock should be marked clean. 31034266Sjulian */ 31134266Sjulian resolved = 1; 31234266Sjulian /* 3131558Srgrimes * 1: scan inodes tallying blocks used 3141558Srgrimes */ 3151558Srgrimes if (preen == 0) { 3161558Srgrimes printf("** Last Mounted on %s\n", sblock.fs_fsmnt); 31774556Smckusick if (mntp != NULL && mntp->f_flags & MNT_ROOTFS) 318102231Strhodes printf("** Root file system\n"); 3191558Srgrimes printf("** Phase 1 - Check Blocks and Sizes\n"); 3201558Srgrimes } 3211558Srgrimes pass1(); 3221558Srgrimes 3231558Srgrimes /* 3241558Srgrimes * 1b: locate first references to duplicates, if any 3251558Srgrimes */ 3261558Srgrimes if (duplist) { 32734266Sjulian if (preen || usedsoftdep) 3281558Srgrimes pfatal("INTERNAL ERROR: dups with -p"); 3291558Srgrimes printf("** Phase 1b - Rescan For More DUPS\n"); 3301558Srgrimes pass1b(); 3311558Srgrimes } 3321558Srgrimes 3331558Srgrimes /* 3341558Srgrimes * 2: traverse directories from root to mark all connected directories 3351558Srgrimes */ 3361558Srgrimes if (preen == 0) 3371558Srgrimes printf("** Phase 2 - Check Pathnames\n"); 3381558Srgrimes pass2(); 3391558Srgrimes 3401558Srgrimes /* 3411558Srgrimes * 3: scan inodes looking for disconnected directories 3421558Srgrimes */ 3431558Srgrimes if (preen == 0) 3441558Srgrimes printf("** Phase 3 - Check Connectivity\n"); 3451558Srgrimes pass3(); 3461558Srgrimes 3471558Srgrimes /* 3481558Srgrimes * 4: scan inodes looking for disconnected files; check reference counts 3491558Srgrimes */ 3501558Srgrimes if (preen == 0) 3511558Srgrimes printf("** Phase 4 - Check Reference Counts\n"); 3521558Srgrimes pass4(); 3531558Srgrimes 3541558Srgrimes /* 3551558Srgrimes * 5: check and repair resource counts in cylinder groups 3561558Srgrimes */ 3571558Srgrimes if (preen == 0) 3581558Srgrimes printf("** Phase 5 - Check Cyl groups\n"); 3591558Srgrimes pass5(); 3601558Srgrimes 3611558Srgrimes /* 3621558Srgrimes * print out summary statistics 3631558Srgrimes */ 3641558Srgrimes n_ffree = sblock.fs_cstotal.cs_nffree; 3651558Srgrimes n_bfree = sblock.fs_cstotal.cs_nbfree; 36674556Smckusick files = maxino - ROOTINO - sblock.fs_cstotal.cs_nifree - n_files; 36774556Smckusick blks = n_blks + 36874556Smckusick sblock.fs_ncg * (cgdmin(&sblock, 0) - cgsblock(&sblock, 0)); 36974556Smckusick blks += cgsblock(&sblock, 0) - cgbase(&sblock, 0); 37074556Smckusick blks += howmany(sblock.fs_cssize, sblock.fs_fsize); 37174556Smckusick blks = maxfsblock - (n_ffree + sblock.fs_frag * n_bfree) - blks; 37274556Smckusick if (bkgrdflag && (files > 0 || blks > 0)) { 37374556Smckusick countdirs = sblock.fs_cstotal.cs_ndir - countdirs; 374100935Sphk pwarn("Reclaimed: %ld directories, %ld files, %lld fragments\n", 375100935Sphk countdirs, (long)files - countdirs, (long long)blks); 37674556Smckusick } 377101037Smux pwarn("%ld files, %jd used, %ju free ", 378101037Smux (long)n_files, (intmax_t)n_blks, 379101037Smux (uintmax_t)n_ffree + sblock.fs_frag * n_bfree); 380101037Smux printf("(%ju frags, %ju blocks, %.1f%% fragmentation)\n", 381101037Smux (uintmax_t)n_ffree, (uintmax_t)n_bfree, 382101037Smux n_ffree * 100.0 / sblock.fs_dsize); 3831558Srgrimes if (debug) { 38474556Smckusick if (files < 0) 38574556Smckusick printf("%d inodes missing\n", -files); 38674556Smckusick if (blks < 0) 387100935Sphk printf("%lld blocks missing\n", -(long long)blks); 3881558Srgrimes if (duplist != NULL) { 3891558Srgrimes printf("The following duplicate blocks remain:"); 3901558Srgrimes for (dp = duplist; dp; dp = dp->next) 391100935Sphk printf(" %lld,", (long long)dp->dup); 3921558Srgrimes printf("\n"); 3931558Srgrimes } 3941558Srgrimes if (zlnhead != NULL) { 3951558Srgrimes printf("The following zero link count inodes remain:"); 3961558Srgrimes for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 39731904Sbde printf(" %u,", zlnp->zlncnt); 3981558Srgrimes printf("\n"); 3991558Srgrimes } 4001558Srgrimes } 4011558Srgrimes zlnhead = (struct zlncnt *)0; 4021558Srgrimes duplist = (struct dups *)0; 4031558Srgrimes muldup = (struct dups *)0; 4041558Srgrimes inocleanup(); 4052179Sdg if (fsmodified) { 40641474Sjulian sblock.fs_time = time(NULL); 4071558Srgrimes sbdirty(); 4081558Srgrimes } 4091558Srgrimes if (cvtlevel && sblk.b_dirty) { 4108871Srgrimes /* 4111558Srgrimes * Write out the duplicate super blocks 4121558Srgrimes */ 4131558Srgrimes for (cylno = 0; cylno < sblock.fs_ncg; cylno++) 4141558Srgrimes bwrite(fswritefd, (char *)&sblock, 41598542Smckusick fsbtodb(&sblock, cgsblock(&sblock, cylno)), 41698542Smckusick SBLOCKSIZE); 4171558Srgrimes } 41834266Sjulian if (rerun) 41934266Sjulian resolved = 0; 42055275Speter 42155725Speter /* 422102231Strhodes * Check to see if the file system is mounted read-write. 42355725Speter */ 42474556Smckusick if (bkgrdflag == 0 && mntp != NULL && (mntp->f_flags & MNT_RDONLY) == 0) 42555275Speter resolved = 0; 42634266Sjulian ckfini(resolved); 42741474Sjulian 42841474Sjulian for (cylno = 0; cylno < sblock.fs_ncg; cylno++) 42941474Sjulian if (inostathead[cylno].il_stat != NULL) 43041474Sjulian free((char *)inostathead[cylno].il_stat); 43141474Sjulian free((char *)inostathead); 43241474Sjulian inostathead = NULL; 43341474Sjulian if (fsmodified && !preen) 4341558Srgrimes printf("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 43518808Sguido if (rerun) 43618808Sguido printf("\n***** PLEASE RERUN FSCK *****\n"); 43774556Smckusick if (mntp != NULL) { 43855725Speter /* 439102231Strhodes * We modified a mounted file system. Do a mount update on 44055725Speter * it unless it is read-write, so we can continue using it 44155725Speter * as safely as possible. 44255725Speter */ 44374556Smckusick if (mntp->f_flags & MNT_RDONLY) { 44455725Speter args.fspec = 0; 44555725Speter args.export.ex_flags = 0; 44655725Speter args.export.ex_root = 0; 44774556Smckusick ret = mount("ufs", mntp->f_mntonname, 44874556Smckusick mntp->f_flags | MNT_UPDATE | MNT_RELOAD, &args); 44955725Speter if (ret == 0) 45055725Speter return (0); 45155725Speter pwarn("mount reload of '%s' failed: %s\n\n", 45274556Smckusick mntp->f_mntonname, strerror(errno)); 45355725Speter } 45441474Sjulian if (!fsmodified) 45541474Sjulian return (0); 4561558Srgrimes if (!preen) 4571558Srgrimes printf("\n***** REBOOT NOW *****\n"); 4581558Srgrimes sync(); 4591558Srgrimes return (4); 4601558Srgrimes } 4611558Srgrimes return (0); 4621558Srgrimes} 46355275Speter 46455275Speter/* 46575927Smckusick * Get the mount point information for name. 46655275Speter */ 46755275Speterstatic struct statfs * 46892839Simpgetmntpt(const char *name) 46955275Speter{ 47055725Speter struct stat devstat, mntdevstat; 47155725Speter char device[sizeof(_PATH_DEV) - 1 + MNAMELEN]; 472100935Sphk char *ddevname; 47375927Smckusick struct statfs *mntbuf, *statfsp; 47475927Smckusick int i, mntsize, isdev; 47555275Speter 47675927Smckusick if (stat(name, &devstat) != 0) 47755275Speter return (NULL); 47875927Smckusick if (S_ISCHR(devstat.st_mode) || S_ISBLK(devstat.st_mode)) 47975927Smckusick isdev = 1; 48075927Smckusick else 48175927Smckusick isdev = 0; 48255275Speter mntsize = getmntinfo(&mntbuf, MNT_NOWAIT); 48355275Speter for (i = 0; i < mntsize; i++) { 48475927Smckusick statfsp = &mntbuf[i]; 485100935Sphk ddevname = statfsp->f_mntfromname; 486100935Sphk if (*ddevname != '/') { 48755725Speter strcpy(device, _PATH_DEV); 488100935Sphk strcat(device, ddevname); 48975927Smckusick strcpy(statfsp->f_mntfromname, device); 49055725Speter } 49175927Smckusick if (isdev == 0) { 49275927Smckusick if (strcmp(name, statfsp->f_mntonname)) 49375927Smckusick continue; 49475927Smckusick return (statfsp); 49575927Smckusick } 496100935Sphk if (stat(ddevname, &mntdevstat) == 0 && 49755725Speter mntdevstat.st_rdev == devstat.st_rdev) 49875927Smckusick return (statfsp); 49955275Speter } 50075927Smckusick statfsp = NULL; 50175927Smckusick return (statfsp); 50255275Speter} 50366861Sadrian 50466861Sadrianstatic void 50592839Simpusage(void) 50666861Sadrian{ 50766861Sadrian (void) fprintf(stderr, 50895258Sdes "usage: %s [-BFpfny] [-b block] [-c level] [-m mode] " 509102231Strhodes "file system ...\n", 51093103Smarkm getprogname()); 51166861Sadrian exit(1); 51266861Sadrian} 513