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IABSD.fr/src/sbin/fsck_ffs/setup.c
krw
- sbin/fsck_ffs/setup.c
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/* $OpenBSD: setup.c,v 1.69 2022/09/01 13:37:57 krw Exp $ */ /* $NetBSD: setup.c,v 1.27 1996/09/27 22:45:19 christos Exp $ */ /* * Copyright (c) 1980, 1986, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include <sys/param.h> /* MAXBSIZE DEV_BSIZE roundup */ #define DKTYPENAMES #include <sys/time.h> #include <ufs/ufs/dinode.h> #include <ufs/ffs/fs.h> #include <sys/stat.h> #include <sys/ioctl.h> #include <sys/dkio.h> #include <sys/disklabel.h> #include <errno.h> #include <fcntl.h> #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <string.h> #include <util.h> #include <limits.h> #include <ctype.h> #include <err.h> #include "fsck.h" #include "extern.h" #include "fsutil.h" #define MAXIMUM(a, b) (((a) > (b)) ? (a) : (b)) #define altsblock (*asblk.b_un.b_fs) #define POWEROF2(num) (((num) & ((num) - 1)) == 0) void badsb(int, char *); int calcsb(char *, int, struct fs *, struct disklabel *, uint32_t); static struct disklabel *getdisklabel(char *, int); static int readsb(int); static int cmpsb(struct fs *, struct fs *); static char rdevname[PATH_MAX]; long numdirs, listmax, inplast; /* * Possible locations for the superblock. */ static const int sbtry[] = SBLOCKSEARCH; /* locations the 1st alternate sb can be at */ static const int altsbtry[] = { 32, 64, 128, 144, 160, 192, 256 }; int setup(char *dev, int isfsdb) { long size, asked, i, j; size_t bmapsize; struct disklabel *lp; off_t sizepb; struct stat statb; struct fs proto; int doskipclean; int32_t maxsymlinklen, nindir; uint32_t cg, inopb; u_int64_t maxfilesize; char *realdev; havesb = 0; fswritefd = fsreadfd = -1; doskipclean = skipclean; if ((fsreadfd = opendev(dev, O_RDONLY, 0, &realdev)) == -1) { printf("Can't open %s: %s\n", dev, strerror(errno)); return (0); } if (strncmp(dev, realdev, PATH_MAX) != 0) { blockcheck(unrawname(realdev)); strlcpy(rdevname, realdev, sizeof(rdevname)); setcdevname(rdevname, dev, preen); if (isfsdb || !hotroot()) { if (unveil("/dev", "rw") == -1) err(1, "unveil /dev"); if (pledge("stdio rpath wpath getpw tty disklabel", NULL) == -1) err(1, "pledge"); } } if (fstat(fsreadfd, &statb) == -1) { printf("Can't stat %s: %s\n", realdev, strerror(errno)); close(fsreadfd); return (0); } if (!S_ISCHR(statb.st_mode)) { pfatal("%s is not a character device", realdev); if (reply("CONTINUE") == 0) { close(fsreadfd); return (0); } } if (preen == 0) { printf("** %s", realdev); if (strncmp(dev, realdev, PATH_MAX) != 0) printf(" (%s)", dev); } if (nflag || (fswritefd = opendev(dev, O_WRONLY, 0, NULL)) == -1) { fswritefd = -1; if (preen) pfatal("NO WRITE ACCESS"); printf(" (NO WRITE)"); } if (preen == 0) printf("\n"); fsmodified = 0; lfdir = 0; initbarea(&sblk); initbarea(&asblk); sblk.b_un.b_buf = malloc(SBSIZE); asblk.b_un.b_buf = malloc(SBSIZE); if (sblk.b_un.b_buf == NULL || asblk.b_un.b_buf == NULL) errexit("cannot allocate space for superblock\n"); if ((lp = getdisklabel(NULL, fsreadfd)) != NULL) secsize = lp->d_secsize; else secsize = DEV_BSIZE; if (isfsdb) { if (pledge("stdio rpath getpw tty", NULL) == -1) err(1, "pledge"); } else if (!hotroot()) { #ifndef SMALL if (pledge("stdio getpw", NULL) == -1) err(1, "pledge"); #else if (pledge("stdio", NULL) == -1) err(1, "pledge"); #endif } /* * Read in the superblock, looking for alternates if necessary */ if (readsb(1) == 0) { if (bflag || preen || calcsb(realdev, fsreadfd, &proto, lp, SBLOCK_UFS1) == 0) return(0); if (reply("LOOK FOR ALTERNATE SUPERBLOCKS") == 0) return (0); for (i = 0; i < sizeof(altsbtry) / sizeof(altsbtry[0]); i++) { bflag = altsbtry[i]; /* proto partially setup by calcsb */ if (readsb(0) != 0 && proto.fs_fsize == sblock.fs_fsize && proto.fs_bsize == sblock.fs_bsize) goto found; } for (cg = 0; cg < proto.fs_ncg; cg++) { bflag = fsbtodb(&proto, cgsblock(&proto, cg)); if (readsb(0) != 0 && proto.fs_fsize == sblock.fs_fsize && proto.fs_bsize == sblock.fs_bsize) goto found; } calcsb(realdev, fsreadfd, &proto, lp, SBLOCK_UFS2); for (cg = 0; cg < proto.fs_ncg; cg++) { bflag = fsbtodb(&proto, cgsblock(&proto, cg)); if (readsb(0) != 0 && proto.fs_fsize == sblock.fs_fsize && proto.fs_bsize == sblock.fs_bsize) goto found; } if (cg >= proto.fs_ncg) { printf("%s %s\n%s %s\n%s %s\n", "SEARCH FOR ALTERNATE SUPER-BLOCK", "FAILED. YOU MUST USE THE", "-b OPTION TO FSCK_FFS TO SPECIFY THE", "LOCATION OF AN ALTERNATE", "SUPER-BLOCK TO SUPPLY NEEDED", "INFORMATION; SEE fsck_ffs(8)."); return(0); } found: doskipclean = 0; pwarn("USING ALTERNATE SUPERBLOCK AT %lld\n", (long long)bflag); } if (debug) printf("clean = %d\n", sblock.fs_clean); if (sblock.fs_clean & FS_ISCLEAN) { if (doskipclean) { pwarn("%sile system is clean; not checking\n", preen ? "f" : "** F"); return (-1); } if (!preen) pwarn("** File system is already clean\n"); } maxfsblock = sblock.fs_size; maxino = sblock.fs_ncg * sblock.fs_ipg; sizepb = sblock.fs_bsize; maxfilesize = sblock.fs_bsize * NDADDR - 1; for (i = 0; i < NIADDR; i++) { sizepb *= NINDIR(&sblock); maxfilesize += sizepb; } /* * Check and potentially fix certain fields in the super block. */ if (sblock.fs_optim != FS_OPTTIME && sblock.fs_optim != FS_OPTSPACE) { pfatal("UNDEFINED OPTIMIZATION IN SUPERBLOCK"); if (reply("SET TO DEFAULT") == 1) { sblock.fs_optim = FS_OPTTIME; sbdirty(); } } if ((sblock.fs_minfree < 0 || sblock.fs_minfree > 99)) { pfatal("IMPOSSIBLE MINFREE=%d IN SUPERBLOCK", sblock.fs_minfree); if (reply("SET TO DEFAULT") == 1) { sblock.fs_minfree = 10; sbdirty(); } } if (sblock.fs_npsect < sblock.fs_nsect || sblock.fs_npsect > sblock.fs_nsect*2) { pwarn("IMPOSSIBLE NPSECT=%d IN SUPERBLOCK", sblock.fs_npsect); sblock.fs_npsect = sblock.fs_nsect; if (preen) printf(" (FIXED)\n"); if (preen || reply("SET TO DEFAULT") == 1) { sbdirty(); dirty(&asblk); } } if (sblock.fs_bmask != ~(sblock.fs_bsize - 1)) { pwarn("INCORRECT BMASK=%x IN SUPERBLOCK", sblock.fs_bmask); sblock.fs_bmask = ~(sblock.fs_bsize - 1); if (preen) printf(" (FIXED)\n"); if (preen || reply("FIX") == 1) { sbdirty(); dirty(&asblk); } } if (sblock.fs_fmask != ~(sblock.fs_fsize - 1)) { pwarn("INCORRECT FMASK=%x IN SUPERBLOCK", sblock.fs_fmask); sblock.fs_fmask = ~(sblock.fs_fsize - 1); if (preen) printf(" (FIXED)\n"); if (preen || reply("FIX") == 1) { sbdirty(); dirty(&asblk); } } if (1 << sblock.fs_bshift != sblock.fs_bsize) { pwarn("INCORRECT BSHIFT=%d IN SUPERBLOCK", sblock.fs_bshift); sblock.fs_bshift = ffs(sblock.fs_bsize) - 1; if (preen) printf(" (FIXED)\n"); if (preen || reply("FIX") == 1) { sbdirty(); dirty(&asblk); } } if (1 << sblock.fs_fshift != sblock.fs_fsize) { pwarn("INCORRECT FSHIFT=%d IN SUPERBLOCK", sblock.fs_fshift); sblock.fs_fshift = ffs(sblock.fs_fsize) - 1; if (preen) printf(" (FIXED)\n"); if (preen || reply("FIX") == 1) { sbdirty(); dirty(&asblk); } } if (sblock.fs_inodefmt < FS_44INODEFMT) { pwarn("Format of filesystem is too old.\n"); pwarn("Must update to modern format using a version of fsck\n"); pfatal("from before release 5.0 with the command ``fsck -c 2''\n"); exit(8); } if (sblock.fs_maxfilesize != maxfilesize) { pwarn("INCORRECT MAXFILESIZE=%llu IN SUPERBLOCK", (unsigned long long)sblock.fs_maxfilesize); sblock.fs_maxfilesize = maxfilesize; if (preen) printf(" (FIXED)\n"); if (preen || reply("FIX") == 1) { sbdirty(); dirty(&asblk); } } maxsymlinklen = sblock.fs_magic == FS_UFS1_MAGIC ? MAXSYMLINKLEN_UFS1 : MAXSYMLINKLEN_UFS2; if (sblock.fs_maxsymlinklen != maxsymlinklen) { pwarn("INCORRECT MAXSYMLINKLEN=%d IN SUPERBLOCK", sblock.fs_maxsymlinklen); sblock.fs_maxsymlinklen = maxsymlinklen; if (preen) printf(" (FIXED)\n"); if (preen || reply("FIX") == 1) { sbdirty(); dirty(&asblk); } } if (sblock.fs_qbmask != ~sblock.fs_bmask) { pwarn("INCORRECT QBMASK=%lx IN SUPERBLOCK", (unsigned long)sblock.fs_qbmask); sblock.fs_qbmask = ~sblock.fs_bmask; if (preen) printf(" (FIXED)\n"); if (preen || reply("FIX") == 1) { sbdirty(); dirty(&asblk); } } if (sblock.fs_qfmask != ~sblock.fs_fmask) { pwarn("INCORRECT QFMASK=%lx IN SUPERBLOCK", (unsigned long)sblock.fs_qfmask); sblock.fs_qfmask = ~sblock.fs_fmask; if (preen) printf(" (FIXED)\n"); if (preen || reply("FIX") == 1) { sbdirty(); dirty(&asblk); } } if (sblock.fs_cgsize != fragroundup(&sblock, CGSIZE(&sblock))) { pwarn("INCONSISTENT CGSIZE=%d\n", sblock.fs_cgsize); sblock.fs_cgsize = fragroundup(&sblock, CGSIZE(&sblock)); if (preen) printf(" (FIXED)\n"); if (preen || reply("FIX") == 1) { sbdirty(); dirty(&asblk); } } if (sblock.fs_magic == FS_UFS2_MAGIC) inopb = sblock.fs_bsize / sizeof(struct ufs2_dinode); else inopb = sblock.fs_bsize / sizeof(struct ufs1_dinode); if (INOPB(&sblock) != inopb) { pwarn("INCONSISTENT INOPB=%u\n", INOPB(&sblock)); sblock.fs_inopb = inopb; if (preen) printf(" (FIXED)\n"); if (preen || reply("FIX") == 1) { sbdirty(); dirty(&asblk); } } if (sblock.fs_magic == FS_UFS2_MAGIC) nindir = sblock.fs_bsize / sizeof(int64_t); else nindir = sblock.fs_bsize / sizeof(int32_t); if (NINDIR(&sblock) != nindir) { pwarn("INCONSISTENT NINDIR=%d\n", NINDIR(&sblock)); sblock.fs_nindir = nindir; if (preen) printf(" (FIXED)\n"); if (preen || reply("FIX") == 1) { sbdirty(); dirty(&asblk); } } if (asblk.b_dirty && !bflag) { memcpy(&altsblock, &sblock, (size_t)sblock.fs_sbsize); flush(fswritefd, &asblk); } /* * read in the summary info. */ asked = 0; sblock.fs_csp = calloc(1, sblock.fs_cssize); if (sblock.fs_csp == NULL) { printf("cannot alloc %u bytes for cylinder group summary area\n", (unsigned)sblock.fs_cssize); goto badsblabel; } for (i = 0, j = 0; i < sblock.fs_cssize; i += sblock.fs_bsize, j++) { size = sblock.fs_cssize - i < sblock.fs_bsize ? sblock.fs_cssize - i : sblock.fs_bsize; if (bread(fsreadfd, (char *)sblock.fs_csp + i, fsbtodb(&sblock, sblock.fs_csaddr + j * sblock.fs_frag), size) != 0 && !asked) { pfatal("BAD SUMMARY INFORMATION"); if (reply("CONTINUE") == 0) { ckfini(0); errexit("%s", ""); } asked++; } } /* * allocate and initialize the necessary maps */ bmapsize = roundup(howmany(maxfsblock, NBBY), sizeof(int16_t)); blockmap = calloc(bmapsize, sizeof(char)); if (blockmap == NULL) { printf("cannot alloc %zu bytes for blockmap\n", bmapsize); goto badsblabel; } inostathead = calloc((unsigned)(sblock.fs_ncg), sizeof(struct inostatlist)); if (inostathead == NULL) { printf("cannot alloc %zu bytes for inostathead\n", (unsigned)sblock.fs_ncg * sizeof(struct inostatlist)); goto badsblabel; } numdirs = MAXIMUM(sblock.fs_cstotal.cs_ndir, 128); inplast = 0; listmax = numdirs + 10; inpsort = calloc((unsigned)listmax, sizeof(struct inoinfo *)); if (inpsort == NULL) { printf("cannot alloc %zu bytes for inpsort\n", (unsigned)listmax * sizeof(struct inoinfo *)); goto badsblabel; } inphead = calloc((unsigned)numdirs, sizeof(struct inoinfo *)); if (inphead == NULL) { printf("cannot alloc %zu bytes for inphead\n", (unsigned)numdirs * sizeof(struct inoinfo *)); goto badsblabel; } bufinit(); if (sblock.fs_flags & FS_DOSOFTDEP) usedsoftdep = 1; else usedsoftdep = 0; return (1); badsblabel: ckfini(0); return (0); } /* * Read in the super block and its summary info. */ static int readsb(int listerr) { daddr_t super = 0; int i; if (bflag) { super = bflag; if (bread(fsreadfd, (char *)&sblock, super, (long)SBSIZE) != 0) return (0); if (sblock.fs_magic != FS_UFS1_MAGIC && sblock.fs_magic != FS_UFS2_MAGIC) { badsb(listerr, "MAGIC NUMBER WRONG"); return (0); } } else { for (i = 0; sbtry[i] != -1; i++) { super = sbtry[i] / DEV_BSIZE; if (bread(fsreadfd, (char *)&sblock, super, (long)SBSIZE) != 0) return (0); if (sblock.fs_magic != FS_UFS1_MAGIC && sblock.fs_magic != FS_UFS2_MAGIC) continue; /* Not a superblock */ /* * Do not look for an FFS1 file system at SBLOCK_UFS2. * Doing so will find the wrong super-block for file * systems with 64k block size. */ if (sblock.fs_magic == FS_UFS1_MAGIC && sbtry[i] == SBLOCK_UFS2) continue; if (sblock.fs_magic == FS_UFS2_MAGIC && sblock.fs_sblockloc != sbtry[i]) continue; /* Not a superblock */ break; } if (sbtry[i] == -1) { badsb(listerr, "MAGIC NUMBER WRONG"); return (0); } } sblk.b_bno = super; sblk.b_size = SBSIZE; /* * run a few consistency checks of the super block */ if (sblock.fs_ncg < 1) { badsb(listerr, "NCG OUT OF RANGE"); return (0); } if (sblock.fs_cpg < 1) { badsb(listerr, "CPG OUT OF RANGE"); return (0); } if (sblock.fs_magic == FS_UFS1_MAGIC) { if (sblock.fs_ncg * sblock.fs_cpg < sblock.fs_ncyl || (sblock.fs_ncg - 1) * sblock.fs_cpg >= sblock.fs_ncyl) { badsb(listerr, "NCYL LESS THAN NCG*CPG"); return (0); } } if (sblock.fs_sbsize > SBSIZE) { badsb(listerr, "SBSIZE PREPOSTEROUSLY LARGE"); return (0); } if (!POWEROF2(sblock.fs_bsize) || sblock.fs_bsize < MINBSIZE || sblock.fs_bsize > MAXBSIZE) { badsb(listerr, "ILLEGAL BLOCK SIZE IN SUPERBLOCK"); return (0); } if (!POWEROF2(sblock.fs_fsize) || sblock.fs_fsize > sblock.fs_bsize || sblock.fs_fsize < sblock.fs_bsize / MAXFRAG) { badsb(listerr, "ILLEGAL FRAGMENT SIZE IN SUPERBLOCK"); return (0); } if (bflag) goto out; getblk(&asblk, cgsblock(&sblock, sblock.fs_ncg - 1), sblock.fs_sbsize); if (asblk.b_errs) return (0); if (cmpsb(&sblock, &altsblock)) { if (debug) { long *nlp, *olp, *endlp; printf("superblock mismatches\n"); nlp = (long *)&altsblock; olp = (long *)&sblock; endlp = olp + (sblock.fs_sbsize / sizeof *olp); for ( ; olp < endlp; olp++, nlp++) { if (*olp == *nlp) continue; printf("offset %d, original %ld, alternate %ld\n", (int)(olp - (long *)&sblock), *olp, *nlp); } } badsb(listerr, "VALUES IN SUPER BLOCK DISAGREE WITH THOSE IN LAST ALTERNATE"); return (0); } out: if (sblock.fs_magic == FS_UFS1_MAGIC) { sblock.fs_time = sblock.fs_ffs1_time; sblock.fs_size = sblock.fs_ffs1_size; sblock.fs_dsize = sblock.fs_ffs1_dsize; sblock.fs_csaddr = sblock.fs_ffs1_csaddr; sblock.fs_cstotal.cs_ndir = sblock.fs_ffs1_cstotal.cs_ndir; sblock.fs_cstotal.cs_nbfree = sblock.fs_ffs1_cstotal.cs_nbfree; sblock.fs_cstotal.cs_nifree = sblock.fs_ffs1_cstotal.cs_nifree; sblock.fs_cstotal.cs_nffree = sblock.fs_ffs1_cstotal.cs_nffree; } havesb = 1; return (1); } void badsb(int listerr, char *s) { if (!listerr) return; if (preen) printf("%s: ", cdevname()); pfatal("BAD SUPER BLOCK: %s\n", s); } /* * Calculate a prototype superblock based on information in the disk label. * When done the cgsblock macro can be calculated and the fs_ncg field * can be used. Do NOT attempt to use other macros without verifying that * their needed information is available! */ int calcsb(char *dev, int devfd, struct fs *fs, struct disklabel *lp, uint32_t sblockloc) { struct partition *pp; char *cp; int i; cp = strchr(dev, '\0'); if ((cp == NULL || (cp[-1] < 'a' || cp[-1] >= 'a' + MAXPARTITIONS)) && !isdigit((unsigned char)cp[-1])) { pfatal("%s: CANNOT FIGURE OUT FILE SYSTEM PARTITION\n", dev); return (0); } cp--; if (lp == NULL) pfatal("%s: CANNOT READ DISKLABEL\n", dev); if (isdigit((unsigned char)*cp)) pp = &lp->d_partitions[0]; else pp = &lp->d_partitions[*cp - 'a']; if (pp->p_fstype != FS_BSDFFS) { pfatal("%s: NOT LABELED AS A BSD FILE SYSTEM (%s)\n", dev, pp->p_fstype < FSMAXTYPES ? fstypenames[pp->p_fstype] : "unknown"); return (0); } memset(fs, 0, sizeof(struct fs)); fs->fs_fsize = DISKLABELV1_FFS_FSIZE(pp->p_fragblock); fs->fs_frag = DISKLABELV1_FFS_FRAG(pp->p_fragblock); fs->fs_fpg = pp->p_cpg * fs->fs_frag; fs->fs_bsize = fs->fs_fsize * fs->fs_frag; fs->fs_nspf = DL_SECTOBLK(lp, fs->fs_fsize / lp->d_secsize); for (fs->fs_fsbtodb = 0, i = NSPF(fs); i > 1; i >>= 1) fs->fs_fsbtodb++; /* * fs->fs_size is in fragments, DL_GETPSIZE() is in disk sectors * and fs_nspf is in DEV_BSIZE blocks. Shake well. */ fs->fs_size = DL_SECTOBLK(lp, DL_GETPSIZE(pp)) / fs->fs_nspf; fs->fs_ncg = howmany(fs->fs_size, fs->fs_fpg); fs->fs_sblkno = roundup( howmany(sblockloc + SBSIZE, fs->fs_fsize), fs->fs_frag); return (1); } static struct disklabel * getdisklabel(char *s, int fd) { static struct disklabel lab; if (ioctl(fd, DIOCGDINFO, (char *)&lab) == -1) { if (s == NULL) return (NULL); pwarn("ioctl (GCINFO): %s\n", strerror(errno)); errexit("%s: can't read disk label\n", s); } return (&lab); } /* * Compare two superblocks */ static int cmpsb(struct fs *sb, struct fs *asb) { /* * Only compare fields which should be the same, and ignore ones * likely to change to ensure future compatibility. */ if (asb->fs_sblkno != sb->fs_sblkno || asb->fs_cblkno != sb->fs_cblkno || asb->fs_iblkno != sb->fs_iblkno || asb->fs_dblkno != sb->fs_dblkno || asb->fs_cgoffset != sb->fs_cgoffset || asb->fs_cgmask != sb->fs_cgmask || asb->fs_ncg != sb->fs_ncg || asb->fs_bsize != sb->fs_bsize || asb->fs_fsize != sb->fs_fsize || asb->fs_frag != sb->fs_frag || asb->fs_bmask != sb->fs_bmask || asb->fs_fmask != sb->fs_fmask || asb->fs_bshift != sb->fs_bshift || asb->fs_fshift != sb->fs_fshift || asb->fs_fragshift != sb->fs_fragshift || asb->fs_fsbtodb != sb->fs_fsbtodb || asb->fs_sbsize != sb->fs_sbsize || asb->fs_nindir != sb->fs_nindir || asb->fs_inopb != sb->fs_inopb || asb->fs_cssize != sb->fs_cssize || asb->fs_cpg != sb->fs_cpg || asb->fs_ipg != sb->fs_ipg || asb->fs_fpg != sb->fs_fpg || asb->fs_magic != sb->fs_magic) return (1); /* they're the same */ return (0); }