diff options
Diffstat (limited to 'sbin/fsck/setup.c')
-rw-r--r-- | sbin/fsck/setup.c | 520 |
1 files changed, 0 insertions, 520 deletions
diff --git a/sbin/fsck/setup.c b/sbin/fsck/setup.c deleted file mode 100644 index 6c4098c11bc7..000000000000 --- a/sbin/fsck/setup.c +++ /dev/null @@ -1,520 +0,0 @@ -/* - * 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. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. 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. - */ - -#ifndef lint -#if 0 -static const char sccsid[] = "@(#)setup.c 8.10 (Berkeley) 5/9/95"; -#endif -static const char rcsid[] = - "$FreeBSD$"; -#endif /* not lint */ - -#define DKTYPENAMES -#include <sys/param.h> -#include <sys/stat.h> -#include <sys/disklabel.h> -#include <sys/file.h> - -#include <ufs/ufs/dinode.h> -#include <ufs/ffs/fs.h> - -#include <ctype.h> -#include <err.h> -#include <errno.h> -#include <string.h> - -#include "fsck.h" - -struct bufarea asblk; -#define altsblock (*asblk.b_un.b_fs) -#define POWEROF2(num) (((num) & ((num) - 1)) == 0) - -static void badsb __P((int listerr, char *s)); -static int calcsb __P((char *dev, int devfd, struct fs *fs)); -static struct disklabel *getdisklabel __P((char *s, int fd)); -static int readsb __P((int listerr)); - -/* - * Read in a superblock finding an alternate if necessary. - * Return 1 if successful, 0 if unsuccessful, -1 if filesystem - * is already clean (preen mode only). - */ -int -setup(dev) - char *dev; -{ - long cg, size, asked, i, j; - long skipclean, bmapsize; - struct disklabel *lp; - off_t sizepb; - struct stat statb; - struct fs proto; - - havesb = 0; - fswritefd = -1; - cursnapshot = 0; - skipclean = fflag ? 0 : preen; - if (stat(dev, &statb) < 0) { - printf("Can't stat %s: %s\n", dev, strerror(errno)); - return (0); - } - if ((statb.st_mode & S_IFMT) != S_IFCHR && - (statb.st_mode & S_IFMT) != S_IFBLK) { - if ((statb.st_flags & SF_SNAPSHOT) != 0) { - cursnapshot = statb.st_ino; - } else { - pfatal("%s is not a disk device", dev); - if (reply("CONTINUE") == 0) - return (0); - } - } - if ((fsreadfd = open(dev, O_RDONLY)) < 0) { - printf("Can't open %s: %s\n", dev, strerror(errno)); - return (0); - } - if (preen == 0) - printf("** %s", dev); - if (nflag || (fswritefd = open(dev, O_WRONLY)) < 0) { - 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) - errx(EEXIT, "cannot allocate space for superblock"); - if ((lp = getdisklabel(NULL, fsreadfd))) - dev_bsize = secsize = lp->d_secsize; - else - dev_bsize = secsize = DEV_BSIZE; - /* - * Read in the superblock, looking for alternates if necessary - */ - if (readsb(1) == 0) { - skipclean = 0; - if (bflag || preen || calcsb(dev, fsreadfd, &proto) == 0) - return(0); - if (reply("LOOK FOR ALTERNATE SUPERBLOCKS") == 0) - return (0); - for (cg = 0; cg < proto.fs_ncg; cg++) { - bflag = fsbtodb(&proto, cgsblock(&proto, cg)); - if (readsb(0) != 0) - break; - } - 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 TO SPECIFY THE", - "LOCATION OF AN ALTERNATE", - "SUPER-BLOCK TO SUPPLY NEEDED", - "INFORMATION; SEE fsck(8)."); - bflag = 0; - return(0); - } - pwarn("USING ALTERNATE SUPERBLOCK AT %d\n", bflag); - bflag = 0; - } - if (skipclean && sblock.fs_clean) { - pwarn("FILESYSTEM CLEAN; SKIPPING CHECKS\n"); - return (-1); - } - maxfsblock = sblock.fs_size; - maxino = sblock.fs_ncg * sblock.fs_ipg; - /* - * 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_interleave < 1 || - sblock.fs_interleave > sblock.fs_nsect) { - pwarn("IMPOSSIBLE INTERLEAVE=%d IN SUPERBLOCK", - sblock.fs_interleave); - sblock.fs_interleave = 1; - if (preen) - printf(" (FIXED)\n"); - if (preen || reply("SET TO DEFAULT") == 1) { - sbdirty(); - dirty(&asblk); - } - } - 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_inodefmt >= FS_44INODEFMT) { - newinofmt = 1; - } else { - sblock.fs_qbmask = ~sblock.fs_bmask; - sblock.fs_qfmask = ~sblock.fs_fmask; - newinofmt = 0; - } - /* - * Convert to new inode format. - */ - if (cvtlevel >= 2 && sblock.fs_inodefmt < FS_44INODEFMT) { - if (preen) - pwarn("CONVERTING TO NEW INODE FORMAT\n"); - else if (!reply("CONVERT TO NEW INODE FORMAT")) - return(0); - doinglevel2++; - sblock.fs_inodefmt = FS_44INODEFMT; - sizepb = sblock.fs_bsize; - sblock.fs_maxfilesize = sblock.fs_bsize * NDADDR - 1; - for (i = 0; i < NIADDR; i++) { - sizepb *= NINDIR(&sblock); - sblock.fs_maxfilesize += sizepb; - } - sblock.fs_maxsymlinklen = MAXSYMLINKLEN; - sblock.fs_qbmask = ~sblock.fs_bmask; - sblock.fs_qfmask = ~sblock.fs_fmask; - sbdirty(); - dirty(&asblk); - } - /* - * Convert to new cylinder group format. - */ - if (cvtlevel >= 1 && sblock.fs_postblformat == FS_42POSTBLFMT) { - if (preen) - pwarn("CONVERTING TO NEW CYLINDER GROUP FORMAT\n"); - else if (!reply("CONVERT TO NEW CYLINDER GROUP FORMAT")) - return(0); - doinglevel1++; - sblock.fs_postblformat = FS_DYNAMICPOSTBLFMT; - sblock.fs_nrpos = 8; - sblock.fs_postbloff = - (char *)(&sblock.fs_opostbl[0][0]) - - (char *)(&sblock.fs_firstfield); - sblock.fs_rotbloff = &sblock.fs_space[0] - - (u_char *)(&sblock.fs_firstfield); - sblock.fs_cgsize = - fragroundup(&sblock, CGSIZE(&sblock)); - sbdirty(); - dirty(&asblk); - } - if (asblk.b_dirty && !bflag) { - memmove(&altsblock, &sblock, (size_t)sblock.fs_sbsize); - flush(fswritefd, &asblk); - } - /* - * read in the summary info. - */ - asked = 0; - 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; - sblock.fs_csp[j] = (struct csum *)calloc(1, (unsigned)size); - if (bread(fsreadfd, (char *)sblock.fs_csp[j], - fsbtodb(&sblock, sblock.fs_csaddr + j * sblock.fs_frag), - size) != 0 && !asked) { - pfatal("BAD SUMMARY INFORMATION"); - if (reply("CONTINUE") == 0) { - ckfini(0); - exit(EEXIT); - } - asked++; - } - } - /* - * allocate and initialize the necessary maps - */ - bmapsize = roundup(howmany(maxfsblock, NBBY), sizeof(short)); - blockmap = calloc((unsigned)bmapsize, sizeof (char)); - if (blockmap == NULL) { - printf("cannot alloc %u bytes for blockmap\n", - (unsigned)bmapsize); - goto badsb; - } - inostathead = calloc((unsigned)(sblock.fs_ncg), - sizeof(struct inostatlist)); - if (inostathead == NULL) { - printf("cannot alloc %u bytes for inostathead\n", - (unsigned)(sizeof(struct inostatlist) * (sblock.fs_ncg))); - goto badsb; - } - numdirs = sblock.fs_cstotal.cs_ndir; - dirhash = numdirs; - if (numdirs == 0) { - printf("numdirs is zero, try using an alternate superblock\n"); - goto badsb; - } - inplast = 0; - listmax = numdirs + 10; - inpsort = (struct inoinfo **)calloc((unsigned)listmax, - sizeof(struct inoinfo *)); - inphead = (struct inoinfo **)calloc((unsigned)numdirs, - sizeof(struct inoinfo *)); - if (inpsort == NULL || inphead == NULL) { - printf("cannot alloc %u bytes for inphead\n", - (unsigned)numdirs * sizeof(struct inoinfo *)); - goto badsb; - } - bufinit(); - if (sblock.fs_flags & FS_DOSOFTDEP) - usedsoftdep = 1; - else - usedsoftdep = 0; - return (1); - -badsb: - ckfini(0); - return (0); -} - -/* - * Read in the super block and its summary info. - */ -static int -readsb(listerr) - int listerr; -{ - ufs_daddr_t super = bflag ? bflag : SBOFF / dev_bsize; - - if (bread(fsreadfd, (char *)&sblock, super, (long)SBSIZE) != 0) - return (0); - sblk.b_bno = super; - sblk.b_size = SBSIZE; - /* - * run a few consistency checks of the super block - */ - if (sblock.fs_magic != FS_MAGIC) - { badsb(listerr, "MAGIC NUMBER WRONG"); return (0); } - 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_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, "SIZE PREPOSTEROUSLY LARGE"); return (0); } - /* - * Compute block size that the filesystem is based on, - * according to fsbtodb, and adjust superblock block number - * so we can tell if this is an alternate later. - */ - super *= dev_bsize; - dev_bsize = sblock.fs_fsize / fsbtodb(&sblock, 1); - sblk.b_bno = super / dev_bsize; - if (bflag) { - havesb = 1; - return (1); - } - /* - * Set all possible fields that could differ, then do check - * of whole super block against an alternate super block. - * When an alternate super-block is specified this check is skipped. - */ - getblk(&asblk, cgsblock(&sblock, sblock.fs_ncg - 1), sblock.fs_sbsize); - if (asblk.b_errs) - return (0); - altsblock.fs_firstfield = sblock.fs_firstfield; - altsblock.fs_unused_1 = sblock.fs_unused_1; - altsblock.fs_time = sblock.fs_time; - altsblock.fs_cstotal = sblock.fs_cstotal; - altsblock.fs_cgrotor = sblock.fs_cgrotor; - altsblock.fs_fmod = sblock.fs_fmod; - altsblock.fs_clean = sblock.fs_clean; - altsblock.fs_ronly = sblock.fs_ronly; - altsblock.fs_flags = sblock.fs_flags; - altsblock.fs_maxcontig = sblock.fs_maxcontig; - altsblock.fs_minfree = sblock.fs_minfree; - altsblock.fs_optim = sblock.fs_optim; - altsblock.fs_rotdelay = sblock.fs_rotdelay; - altsblock.fs_maxbpg = sblock.fs_maxbpg; - memmove(altsblock.fs_csp, sblock.fs_csp, sizeof sblock.fs_csp); - altsblock.fs_maxcluster = sblock.fs_maxcluster; - memmove(altsblock.fs_fsmnt, sblock.fs_fsmnt, sizeof sblock.fs_fsmnt); - memmove(altsblock.fs_snapinum, sblock.fs_snapinum, - sizeof sblock.fs_snapinum); - memmove(altsblock.fs_sparecon, - sblock.fs_sparecon, sizeof sblock.fs_sparecon); - /* - * The following should not have to be copied. - */ - altsblock.fs_fsbtodb = sblock.fs_fsbtodb; - altsblock.fs_interleave = sblock.fs_interleave; - altsblock.fs_npsect = sblock.fs_npsect; - altsblock.fs_nrpos = sblock.fs_nrpos; - altsblock.fs_state = sblock.fs_state; - altsblock.fs_qbmask = sblock.fs_qbmask; - altsblock.fs_qfmask = sblock.fs_qfmask; - altsblock.fs_state = sblock.fs_state; - altsblock.fs_maxfilesize = sblock.fs_maxfilesize; - if (memcmp(&sblock, &altsblock, (int)sblock.fs_sbsize)) { - 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", - olp - (long *)&sblock, *olp, *nlp); - } - } - badsb(listerr, - "VALUES IN SUPER BLOCK DISAGREE WITH THOSE IN FIRST ALTERNATE"); - return (0); - } - havesb = 1; - return (1); -} - -static void -badsb(listerr, s) - 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! - */ -static int -calcsb(dev, devfd, fs) - char *dev; - int devfd; - register struct fs *fs; -{ - register struct disklabel *lp; - register struct partition *pp; - register char *cp; - int i; - - cp = strchr(dev, '\0') - 1; - if (cp == (char *)-1 || ((*cp < 'a' || *cp > 'h') && !isdigit(*cp))) { - pfatal("%s: CANNOT FIGURE OUT FILE SYSTEM PARTITION\n", dev); - return (0); - } - lp = getdisklabel(dev, devfd); - if (isdigit(*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); - } - if (pp->p_fsize == 0 || pp->p_frag == 0 || - pp->p_cpg == 0 || pp->p_size == 0) { - pfatal("%s: %s: type %s fsize %d, frag %d, cpg %d, size %d\n", - dev, "INCOMPLETE LABEL", fstypenames[pp->p_fstype], - pp->p_fsize, pp->p_frag, pp->p_cpg, pp->p_size); - return (0); - } - memset(fs, 0, sizeof(struct fs)); - fs->fs_fsize = pp->p_fsize; - fs->fs_frag = pp->p_frag; - fs->fs_cpg = pp->p_cpg; - fs->fs_size = pp->p_size; - fs->fs_ntrak = lp->d_ntracks; - fs->fs_nsect = lp->d_nsectors; - fs->fs_spc = lp->d_secpercyl; - fs->fs_nspf = fs->fs_fsize / lp->d_secsize; - fs->fs_sblkno = roundup( - howmany(lp->d_bbsize + lp->d_sbsize, fs->fs_fsize), - fs->fs_frag); - fs->fs_cgmask = 0xffffffff; - for (i = fs->fs_ntrak; i > 1; i >>= 1) - fs->fs_cgmask <<= 1; - if (!POWEROF2(fs->fs_ntrak)) - fs->fs_cgmask <<= 1; - fs->fs_cgoffset = roundup( - howmany(fs->fs_nsect, NSPF(fs)), fs->fs_frag); - fs->fs_fpg = (fs->fs_cpg * fs->fs_spc) / NSPF(fs); - fs->fs_ncg = howmany(fs->fs_size / fs->fs_spc, fs->fs_cpg); - for (fs->fs_fsbtodb = 0, i = NSPF(fs); i > 1; i >>= 1) - fs->fs_fsbtodb++; - dev_bsize = lp->d_secsize; - return (1); -} - -static struct disklabel * -getdisklabel(s, fd) - char *s; - int fd; -{ - static struct disklabel lab; - - if (ioctl(fd, DIOCGDINFO, (char *)&lab) < 0) { - if (s == NULL) - return ((struct disklabel *)NULL); - pwarn("ioctl (GCINFO): %s\n", strerror(errno)); - errx(EEXIT, "%s: can't read disk label", s); - } - return (&lab); -} |