-
-check(dev)
- char *dev;
-{
- register DINODE *dp;
- register ino_t *blp;
- register int i, n;
- ino_t savino;
- int b, c;
- daddr_t d, s;
-
- devname = dev;
- if (setup(dev) == 0) {
- if (preen)
- pfatal("CAN'T CHECK DEVICE.");
- return;
- }
-/* 1 */
- if (preen==0) {
- if (hotroot)
- printf("** Root file system\n");
- printf("** Phase 1 - Check Blocks and Sizes\n");
- }
- pfunc = pass1;
- inum = 0;
- n_blks += howmany(sblock.fs_cssize, sblock.fs_bsize) * sblock.fs_frag;
- for (c = 0; c < sblock.fs_ncg; c++) {
- if (getblk(&cgblk, cgtod(c, &sblock), sblock.fs_cgsize) == 0)
- continue;
- n = 0;
- for (i = 0; i < sblock.fs_ipg; i++, inum++) {
- dp = ginode();
- if (dp == NULL)
- continue;
- if (ALLOC) {
- if (!isset(cgrp.cg_iused, i)) {
- /*
- printf("%d bad, not used\n", inum);
- */
- inosumbad++;
- n++;
- }
- lastino = inum;
- if (ftypeok(dp) == 0) {
- pfatal("UNKNOWN FILE TYPE I=%u", inum);
- if (reply("CLEAR") == 1) {
- zapino(dp);
- inodirty();
- inosumbad++;
- }
- continue;
- }
- n_files++;
- if (setlncnt(dp->di_nlink) <= 0) {
- if (badlnp < &badlncnt[MAXLNCNT])
- *badlnp++ = inum;
- else {
- pfatal("LINK COUNT TABLE OVERFLOW");
- if (reply("CONTINUE") == 0)
- errexit("");
- }
- }
- setstate(DIR ? DSTATE : FSTATE);
- badblk = dupblk = 0; filsize = 0; maxblk = 0;
- ckinode(dp, ADDR);
- if (DIR && dp->di_size % sizeof(DIRECT)) {
- pwarn("DIRECTORY MISALIGNED I=%u\n",
- inum);
- if (preen == 0)
- printf("\n");
- }
- } else {
- n++;
- if (isset(cgrp.cg_iused, i)) {
- /*
- printf("%d bad, marked used\n", inum);
- */
- inosumbad++;
- n--;
- }
- if (dp->di_mode != 0) {
- pfatal("PARTIALLY ALLOCATED INODE I=%u", inum);
- if (reply("CLEAR") == 1) {
- zapino(dp);
- inodirty();
- inosumbad++;
- }
- }
- }
- }
- if (n != cgrp.cg_cs.cs_nifree) {
- printf("cg[%d].cg_cs.cs_nifree is %d not %d\n",
- c, cgrp.cg_cs.cs_nifree, n);
- inosumbad++;
- }
- }
-/* 1b */
- if (enddup != &duplist[0]) {
- if (preen)
- pfatal("INTERNAL ERROR: dups with -p");
- printf("** Phase 1b - Rescan For More DUPS\n");
- pfunc = pass1b;
- inum = 0;
- for (c = 0; c < sblock.fs_ncg; c++) {
- for (i = 0; i < sblock.fs_ipg; i++, inum++) {
- dp = ginode();
- if (dp == NULL)
- continue;
- if (getstate() != USTATE &&
- (ckinode(dp, ADDR) & STOP))
- goto out1b;
- }
- }
- }
-out1b:
- flush(&dfile, &inoblk);
-/* 2 */
- if (preen == 0)
- printf("** Phase 2 - Check Pathnames\n");
- inum = ROOTINO;
- thisname = pathp = pathname;
- pfunc = pass2;
- switch (getstate()) {
-
- case USTATE:
- errexit("ROOT INODE UNALLOCATED. TERMINATING.\n");
-
- case FSTATE:
- pfatal("ROOT INODE NOT DIRECTORY");
- if (reply("FIX") == 0 || (dp = ginode()) == NULL)
- errexit("");
- dp->di_mode &= ~IFMT;
- dp->di_mode |= IFDIR;
- inodirty();
- inosumbad++;
- setstate(DSTATE);
- /* fall into ... */
-
- case DSTATE:
- descend();
- break;
-
- case CLEAR:
- pfatal("DUPS/BAD IN ROOT INODE");
- printf("\n");
- if (reply("CONTINUE") == 0)
- errexit("");
- setstate(DSTATE);
- descend();
- }
-/* 3 */
- if (preen == 0)
- printf("** Phase 3 - Check Connectivity\n");
- for (inum = ROOTINO; inum <= lastino; inum++) {
- if (getstate() == DSTATE) {
- pfunc = findino;
- srchname = "..";
- savino = inum;
- do {
- orphan = inum;
- if ((dp = ginode()) == NULL)
- break;
- filsize = dp->di_size;
- parentdir = 0;
- ckinode(dp, DATA);
- if ((inum = parentdir) == 0)
- break;
- } while (getstate() == DSTATE);
- inum = orphan;
- if (linkup() == 1) {
- thisname = pathp = pathname;
- *pathp++ = '?';
- pfunc = pass2;
- descend();
- }
- inum = savino;
- }
- }
-/* 4 */
- if (preen == 0)
- printf("** Phase 4 - Check Reference Counts\n");
- pfunc = pass4;
- for (inum = ROOTINO; inum <= lastino; inum++) {
- switch (getstate()) {
-
- case FSTATE:
- if (n = getlncnt())
- adjust((short)n);
- else {
- for (blp = badlncnt;blp < badlnp; blp++)
- if (*blp == inum) {
- clri("UNREF", 1);
- break;
- }
- }
- break;
-
- case DSTATE:
- clri("UNREF", 1);
- break;
-
- case CLEAR:
- clri("BAD/DUP", 1);
- break;
- }
- }
- if (imax - ROOTINO - n_files != sblock.fs_cstotal.cs_nifree) {
- pwarn("FREE INODE COUNT WRONG IN SUPERBLK");
- if (preen)
- printf(" (FIXED)\n");
- if (preen || reply("FIX") == 1) {
- sblock.fs_cstotal.cs_nifree = imax - n_files;
- sbdirty();
- }
- }
- flush(&dfile, &fileblk);
-
-/* 5 */
- if (preen == 0)
- printf("** Phase 5 - Check Cyl groups\n");
- copy(blkmap, freemap, (unsigned)bmapsz);
- dupblk = 0;
- n_index = sblock.fs_ncg * (cgdmin(0, &sblock) - cgtod(0, &sblock));
- for (c = 0; c < sblock.fs_ncg; c++) {
- daddr_t cbase = cgbase(c,&sblock);
- short bo[MAXCPG][NRPOS];
- long frsum[MAXFRAG];
- int blk;
-
- for (n = 0; n < sblock.fs_cpg; n++)
- for (i = 0; i < NRPOS; i++)
- bo[n][i] = 0;
- for (i = 0; i < sblock.fs_frag; i++) {
- frsum[i] = 0;
- }
- /*
- * need to account for the spare boot and super blocks
- * which appear (inaccurately) bad
- */
- n_bad += cgtod(c, &sblock) - cbase;
- if (getblk(&cgblk, cgtod(c, &sblock), sblock.fs_cgsize) == 0)
- continue;
- for (b = 0; b < sblock.fs_fpg; b += sblock.fs_frag) {
- if (isblock(&sblock, cgrp.cg_free, b/sblock.fs_frag)) {
- if (pass5(cbase+b, sblock.fs_frag) == STOP)
- goto out5;
- /* this is clumsy ... */
- n_ffree -= sblock.fs_frag;
- n_bfree++;
- bo[cbtocylno(&sblock, b)]
- [cbtorpos(&sblock, b)]++;
- } else {
- for (d = 0; d < sblock.fs_frag; d++)
- if (isset(cgrp.cg_free, b+d))
- if (pass5(cbase+b+d,1) == STOP)
- goto out5;
- blk = ((cgrp.cg_free[b / NBBY] >> (b % NBBY)) &
- (0xff >> (NBBY - sblock.fs_frag)));
- if (blk != 0)
- fragacct(&sblock, blk, frsum, 1);
- }
- }
- for (i = 0; i < sblock.fs_frag; i++) {
- if (cgrp.cg_frsum[i] != frsum[i]) {
- printf("cg[%d].cg_frsum[%d] have %d calc %d\n",
- c, i, cgrp.cg_frsum[i], frsum[i]);
- frsumbad++;
- }
- }
- for (n = 0; n < sblock.fs_cpg; n++)
- for (i = 0; i < NRPOS; i++)
- if (bo[n][i] != cgrp.cg_b[n][i]) {
- printf("cg[%d].cg_b[%d][%d] have %d calc %d\n",
- c, n, i, cgrp.cg_b[n][i], bo[n][i]);
- offsumbad++;
- }
- }
-out5:
- if (dupblk)
- pwarn("%d DUP BLKS IN BIT MAPS\n", dupblk);
- if (fixcg == 0) {
- if ((b = n_blks+n_ffree+sblock.fs_frag*n_bfree+n_index+n_bad) != fmax) {
- pwarn("%ld BLK(S) MISSING\n", fmax - b);
- fixcg = 1;
- } else if (inosumbad + offsumbad + frsumbad) {
- pwarn("SUMMARY INFORMATION %s%s%sBAD\n",
- inosumbad ? "(INODE FREE) " : "",
- offsumbad ? "(BLOCK OFFSETS) " : "",
- frsumbad ? "(FRAG SUMMARIES) " : "");
- fixcg = 1;
- } else if (n_ffree != sblock.fs_cstotal.cs_nffree ||
- n_bfree != sblock.fs_cstotal.cs_nbfree) {
- pwarn("FREE BLK COUNT(S) WRONG IN SUPERBLK");
- if (preen)
- printf(" (FIXED)\n");
- if (preen || reply("FIX") == 1) {
- sblock.fs_cstotal.cs_nffree = n_ffree;
- sblock.fs_cstotal.cs_nbfree = n_bfree;
- sbdirty();
- }
- }
- }
- if (fixcg) {
- pwarn("BAD CYLINDER GROUPS");
- if (preen)
- printf(" (SALVAGED)\n");
- else if (reply("SALVAGE") == 0)
- fixcg = 0;
- }
-
- if (fixcg) {
- if (preen == 0)
- printf("** Phase 6 - Salvage Cylinder Groups\n");
- makecg();
- n_ffree = sblock.fs_cstotal.cs_nffree;
- n_bfree = sblock.fs_cstotal.cs_nbfree;
- }
-
- pwarn("%d files, %d used, %d free (%d frags, %d blocks)\n",
- n_files, n_blks - howmany(sblock.fs_cssize, sblock.fs_bsize) * sblock.fs_frag,
- n_ffree + sblock.fs_frag * n_bfree, n_ffree, n_bfree);
- if (dfile.mod) {
- time(&sblock.fs_time);
- sbdirty();
- }
- ckfini();
- sync();
- if (dfile.mod && hotroot) {
- printf("\n***** BOOT UNIX (NO SYNC!) *****\n");
- exit(4);
- }
- if (dfile.mod && preen == 0)
- printf("\n***** FILE SYSTEM WAS MODIFIED *****\n");
- free(blkmap);
- free(freemap);
- free(statemap);
- free(lncntp);
-}
-
-/* VARARGS1 */
-error(s1, s2, s3, s4)
- char *s1;
-{
-
- printf(s1, s2, s3, s4);
-}
-
-/* VARARGS1 */
-errexit(s1, s2, s3, s4)
- char *s1;
-{
- error(s1, s2, s3, s4);
- exit(8);
-}
-
-/*
- * An inconsistency occured which shouldn't during normal operations.
- * Die if preening, otw just printf.
- */
-/* VARARGS1 */
-pfatal(s, a1, a2, a3)
- char *s;
-{
-
- if (preen) {
- printf("%s: ", devname);
- printf(s, a1, a2, a3);
- printf("\n");
- preendie();
- }
- printf(s, a1, a2, a3);
-}
-
-preendie()
-{
-
- printf("%s: UNEXPECTED INCONSISTENCY; RUN fsck MANUALLY.\n", devname);
- exit(8);
-}
-
-/*
- * Pwarn is like printf when not preening,
- * or a warning (preceded by filename) when preening.
- */
-/* VARARGS1 */
-pwarn(s, a1, a2, a3, a4, a5)
- char *s;
-{
-
- if (preen)
- printf("%s: ", devname);
- printf(s, a1, a2, a3, a4, a5);
-}
-
-ckinode(dp, flg)
- DINODE *dp;
- register flg;
-{
- register daddr_t *ap;
- register ret;
- int (*func)(), n, ndb, size;
-
- if (SPECIAL)
- return (KEEPON);
- func = (flg == ADDR) ? pfunc : dirscan;
- ndb = howmany(dp->di_size, sblock.fs_bsize);
- for (ap = &dp->di_db[0]; ap < &dp->di_db[NDADDR]; ap++) {
- if (--ndb == 0 && (dp->di_size % sblock.fs_bsize))
- size = howmany(dp->di_size % sblock.fs_bsize, sblock.fs_fsize);
- else
- size = sblock.fs_frag;
- if (*ap && (ret = (*func)(*ap, size)) & STOP)
- return (ret);
- }
- for (ap = &dp->di_ib[0], n = 1; n <= 2; ap++, n++) {
- if (*ap && (ret = iblock(*ap, n, flg, dp->di_size - sblock.fs_bsize * NDADDR)) & STOP)
- return (ret);
- }
- return (KEEPON);
-}
-
-iblock(blk, ilevel, flg, isize)
- daddr_t blk;
- register ilevel;
- int isize;
-{
- register daddr_t *ap;
- register daddr_t *aplim;
- register int i, n;
- int (*func)(), nif;
- BUFAREA ib;
-
- if (flg == ADDR) {
- func = pfunc;
- if (((n = (*func)(blk, sblock.fs_frag)) & KEEPON) == 0)
- return (n);
- } else
- func = dirscan;
- if (outrange(blk)) /* protect thyself */
- return (SKIP);
- initbarea(&ib);
- if (getblk(&ib, blk, sblock.fs_bsize) == NULL)
- return (SKIP);
- ilevel--;
- if (ilevel == 0) {
- nif = isize / sblock.fs_bsize + 1;
- } else /* ilevel == 1 */ {
- nif = isize / (sblock.fs_bsize * NINDIR(&sblock)) + 1;
- }
- if (nif > NINDIR(&sblock))
- nif = NINDIR(&sblock);
- aplim = & ib.b_un.b_indir[nif];
- for (ap = ib.b_un.b_indir, i = 1; ap < aplim; ap++, i++)
- if (*ap) {
- if (ilevel > 0)
- n = iblock(*ap, ilevel, flg, isize - i * NINDIR(&sblock) * sblock.fs_bsize);
- else
- n = (*func)(*ap, sblock.fs_frag);
- if (n & STOP)
- return (n);
- }
- return (KEEPON);
-}
-
-pass1(blk, size)
- daddr_t blk;
- int size;
-{
- register daddr_t *dlp;
- int res = KEEPON;
-
- for (; size > 0; blk++, size--) {
- if (outrange(blk)) {
- blkerr("BAD", blk);
- if (++badblk >= MAXBAD) {
- printf("EXCESSIVE BAD BLKS I=%u", inum);
- if (reply("CONTINUE") == 0)
- errexit("");
- return (STOP);
- }
- res = SKIP;
- } else if (getbmap(blk)) {
- blkerr("DUP", blk);
- if (++dupblk >= MAXDUP) {
- printf("EXCESSIVE DUP BLKS I=%u", inum);
- if (reply("CONTINUE") == 0)
- errexit("");
- return (STOP);
- }
- if (enddup >= &duplist[DUPTBLSIZE]) {
- printf("DUP TABLE OVERFLOW.");
- if (reply("CONTINUE") == 0)
- errexit("");
- return (STOP);
- }
- for (dlp = duplist; dlp < muldup; dlp++)
- if (*dlp == blk) {
- *enddup++ = blk;
- break;
- }
- if (dlp >= muldup) {
- *enddup++ = *muldup;
- *muldup++ = blk;
- }
- } else {
- n_blks++;
- setbmap(blk);
- }
- filsize++;
- }
- return (res);
-}
-
-pass1b(blk, size)
- daddr_t blk;
- int size;
-{
- register daddr_t *dlp;
- int res = KEEPON;
-
- for (; size > 0; blk++, size--) {
- if (outrange(blk))
- res = SKIP;
- for (dlp = duplist; dlp < muldup; dlp++)
- if (*dlp == blk) {
- blkerr("DUP", blk);
- *dlp = *--muldup;
- *muldup = blk;
- if (muldup == duplist)
- return (STOP);
- }
- }
- return (res);
-}
-
-pass2(dirp)
- register DIRECT *dirp;
-{
- register char *p;
- register n;
- DINODE *dp;
-
- if ((inum = dirp->d_ino) == 0)
- return (KEEPON);
- thisname = pathp;
- for (p = dirp->d_name; p < &dirp->d_name[DIRSIZ]; )
- if ((*pathp++ = *p++) == 0) {
- --pathp;
- break;
- }
- *pathp = 0;
- n = 0;
- if (inum > imax || inum <= 0)
- n = direrr("I OUT OF RANGE");
- else {
-again:
- switch (getstate()) {
- case USTATE:
- n = direrr("UNALLOCATED");
- break;
-
- case CLEAR:
- if ((n = direrr("DUP/BAD")) == 1)
- break;
- if ((dp = ginode()) == NULL)
- break;
- setstate(DIR ? DSTATE : FSTATE);
- goto again;
-
- case FSTATE:
- declncnt();
- break;
-
- case DSTATE:
- declncnt();
- descend();
- break;
- }
- }
- pathp = thisname;
- if (n == 0)
- return (KEEPON);
- dirp->d_ino = 0;
- return (KEEPON|ALTERD);
-}
-
-pass4(blk, size)
- daddr_t blk;
-{
- register daddr_t *dlp;
- int res = KEEPON;
-
- for (; size > 0; blk++, size--) {
- if (outrange(blk))
- res = SKIP;
- else if (getbmap(blk)) {
- for (dlp = duplist; dlp < enddup; dlp++)
- if (*dlp == blk) {
- *dlp = *--enddup;
- return (KEEPON);
- }
- clrbmap(blk);
- n_blks--;
- }
- }
- return (res);
-}
-
-pass5(blk, size)
- daddr_t blk;
- int size;
-{
- int res = KEEPON;
-
- for (; size > 0; blk++, size--) {
- if (outrange(blk)) {
- fixcg = 1;
- if (preen)
- pfatal("BAD BLOCKS IN BIT MAPS.");
- if (++badblk >= MAXBAD) {
- printf("EXCESSIVE BAD BLKS IN BIT MAPS.");
- if (reply("CONTINUE") == 0)
- errexit("");
- return (STOP);
- }
- } else if (getfmap(blk)) {
- fixcg = 1;
- if (++dupblk >= DUPTBLSIZE) {
- printf("EXCESSIVE DUP BLKS IN BIT MAPS.");
- if (reply("CONTINUE") == 0)
- errexit("");
- return (STOP);
- }
- } else {
- n_ffree++;
- setfmap(blk);
- }
- }
- return (res);
-}
-
-outrange(blk)
- daddr_t blk;
-{
- register int c;
-
- c = dtog(blk, &sblock);
- if (blk >= fmax || blk < cgdmin(c, &sblock)) {
- return (1);
- }
- return (0);
-}
-
-blkerr(s, blk)
- daddr_t blk;
- char *s;
-{
- pfatal("%ld %s I=%u", blk, s, inum);
- printf("\n");
- setstate(CLEAR); /* mark for possible clearing */
-}
-
-descend()
-{
- register DINODE *dp;
- register char *savname;
- off_t savsize;
-
- setstate(FSTATE);
- if ((dp = ginode()) == NULL)
- return;
- savname = thisname;
- *pathp++ = '/';
- savsize = filsize;
- filsize = dp->di_size;
- ckinode(dp, DATA);
- thisname = savname;
- *--pathp = 0;
- filsize = savsize;
-}
-
-dirscan(blk, nf)
- daddr_t blk;
- int nf;
-{
- register DIRECT *dirp;
- register DIRECT *edirp;
- register char *p1, *p2;
- register n;
- DIRECT direntry;
-
- if (outrange(blk)) {
- filsize -= sblock.fs_bsize;
- return (SKIP);
- }
- edirp = &dirblk.b_dir[NDIRECT(&sblock)*nf/sblock.fs_frag];
- for (dirp = dirblk.b_dir; dirp < edirp &&
- filsize > 0; dirp++, filsize -= sizeof(DIRECT)) {
- if (getblk(&fileblk, blk, nf * sblock.fs_fsize) == NULL) {
- filsize -= (&dirblk.b_dir[NDIRECT(&sblock)]-dirp)*sizeof(DIRECT);
- return (SKIP);
- }
- p1 = &dirp->d_name[DIRSIZ];
- p2 = &direntry.d_name[DIRSIZ];
- while (p1 > (char *)dirp)
- *--p2 = *--p1;
- if ((n = (*pfunc)(&direntry)) & ALTERD) {
- if (getblk(&fileblk, blk, nf * sblock.fs_fsize) != NULL) {
- p1 = &dirp->d_name[DIRSIZ];
- p2 = &direntry.d_name[DIRSIZ];
- while (p1 > (char *)dirp)
- *--p1 = *--p2;
- dirty(&fileblk);
- sbdirty();
- } else
- n &= ~ALTERD;
- }
- if (n & STOP)
- return (n);
- }
- return (filsize > 0 ? KEEPON : STOP);
-}
-
-direrr(s)
- char *s;
-{
- register DINODE *dp;
-
- pwarn("%s ", s);
- pinode();
- printf("\n");
- if ((dp = ginode()) != NULL && ftypeok(dp))
- pfatal("%s=%s", DIR?"DIR":"FILE", pathname);
- else
- pfatal("NAME=%s", pathname);
- return (reply("REMOVE"));
-}
-
-adjust(lcnt)
- register short lcnt;
-{
- register DINODE *dp;
-
- if ((dp = ginode()) == NULL)
- return;
- if (dp->di_nlink == lcnt) {
- if (linkup() == 0)
- clri("UNREF", 0);
- }
- else {
- pwarn("LINK COUNT %s",
- (lfdir==inum)?lfname:(DIR?"DIR":"FILE"));
- pinode();
- printf(" COUNT %d SHOULD BE %d",
- dp->di_nlink, dp->di_nlink-lcnt);
- if (preen) {
- if (lcnt < 0) {
- printf("\n");
- preendie();
- }
- printf(" (ADJUSTED)\n");
- }
- if (preen || reply("ADJUST") == 1) {
- dp->di_nlink -= lcnt;
- inodirty();
- }
- }
-}
-
-clri(s, flg)
- char *s;
-{
- register DINODE *dp;
-
- if ((dp = ginode()) == NULL)
- return;
- if (flg == 1) {
- pwarn("%s %s", s, DIR?"DIR":"FILE");
- pinode();
- }
- if (preen || reply("CLEAR") == 1) {
- if (preen)
- printf(" (CLEARED)\n");
- n_files--;
- pfunc = pass4;
- ckinode(dp, ADDR);
- zapino(dp);
- setstate(USTATE);
- inodirty();
- inosumbad++;
- }
-}
-
-setup(dev)
- char *dev;
-{
- dev_t rootdev;
- struct ostat statb;
- int super = bflag ? bflag : SBLOCK;
-
- bflag = 0;
- if (stat("/", &statb) < 0)
- errexit("Can't stat root\n");
- rootdev = statb.st_dev;
- if (stat(dev, &statb) < 0) {
- error("Can't stat %s\n", dev);
- return (0);
- }
- rawflg = 0;
- if ((statb.st_mode & S_IFMT) == S_IFBLK)
- ;
- else if ((statb.st_mode & S_IFMT) == S_IFCHR)
- rawflg++;
- else {
- if (reply("file is not a block or character device; OK") == 0)
- return (0);
- }
- if (rootdev == statb.st_rdev)
- hotroot++;
- if ((dfile.rfdes = open(dev, 0)) < 0) {
- error("Can't open %s\n", dev);
- return (0);
- }
- if (preen == 0)
- printf("** %s", dev);
- if (nflag || (dfile.wfdes = open(dev, 1)) < 0) {
- dfile.wfdes = -1;
- if (preen)
- pfatal("NO WRITE ACCESS");
- printf(" (NO WRITE)");
- }
- if (preen == 0)
- printf("\n");
- fixcg = 0; inosumbad = 0; offsumbad = 0; frsumbad = 0;
- dfile.mod = 0;
- n_files = n_blks = n_ffree = n_bfree = 0;
- muldup = enddup = &duplist[0];
- badlnp = &badlncnt[0];
- lfdir = 0;
- rplyflag = 0;
- initbarea(&sblk);
- initbarea(&fileblk);
- initbarea(&inoblk);
- initbarea(&cgblk);
- if (bread(&dfile, &sblock, super, 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("MAGIC NUMBER WRONG"); return (0); }
- if (sblock.fs_ncg < 1)
- { badsb("NCG OUT OF RANGE"); return (0); }
- if (sblock.fs_cpg < 1 || sblock.fs_cpg > MAXCPG)
- { badsb("CPG OUT OF RANGE"); return (0); }
- if (sblock.fs_nsect < 1)
- { badsb("NSECT < 1"); return (0); }
- if (sblock.fs_ntrak < 1)
- { badsb("NTRAK < 1"); return (0); }
- if (sblock.fs_spc != sblock.fs_nsect * sblock.fs_ntrak)
- { badsb("SPC DOES NOT JIVE w/NTRAK*NSECT"); return (0); }
- if (sblock.fs_ipg % INOPB(&sblock))
- { badsb("INODES NOT MULTIPLE OF A BLOCK"); return (0); }
- if (cgdmin(0, &sblock) >= sblock.fs_cpg * sblock.fs_spc / NSPF(&sblock))
- { badsb("IMPLIES MORE INODE THAN DATA BLOCKS"); return (0); }
- if (sblock.fs_ncg * sblock.fs_cpg < sblock.fs_ncyl ||
- (sblock.fs_ncg - 1) * sblock.fs_cpg >= sblock.fs_ncyl)
- { badsb("NCYL DOES NOT JIVE WITH NCG*CPG"); return (0); }
- if (sblock.fs_fpg != sblock.fs_cpg * sblock.fs_spc / NSPF(&sblock))
- { badsb("FPG DOES NOT JIVE WITH CPG & SPC"); return (0); }
- if (sblock.fs_size * NSPF(&sblock) <=
- (sblock.fs_ncyl - 1) * sblock.fs_spc)
- { badsb("SIZE PREPOSTEROUSLY SMALL"); return (0); }
- if (sblock.fs_size * NSPF(&sblock) > sblock.fs_ncyl * sblock.fs_spc)
- { badsb("SIZE PREPOSTEROUSLY LARGE"); return (0); }
- /* rest we COULD repair... */
- if (sblock.fs_sblkno != SBLOCK)
- { badsb("SBLKNO CORRUPTED"); return (0); }
- if (sblock.fs_cblkno !=
- roundup(howmany(BBSIZE + SBSIZE, sblock.fs_fsize), sblock.fs_frag))
- { badsb("CBLKNO CORRUPTED"); return (0); }
- if (sblock.fs_iblkno != sblock.fs_cblkno + sblock.fs_frag)
- { badsb("IBLKNO CORRUPTED"); return (0); }
- if (sblock.fs_dblkno !=
- sblock.fs_iblkno + sblock.fs_ipg / INOPF(&sblock))
- { badsb("DBLKNO CORRUPTED"); return (0); }
- if (sblock.fs_cgsize !=
- roundup(sizeof(struct cg) + howmany(sblock.fs_fpg, NBBY),
- sblock.fs_fsize))
- { badsb("CGSIZE INCORRECT"); return (0); }
- if (sblock.fs_cssize != sblock.fs_ncg * sizeof(struct csum))
- { badsb("CSSIZE INCORRECT"); return (0); }
- fmax = sblock.fs_size;
- imax = sblock.fs_ncg * sblock.fs_ipg;
- /*
- * allocate the necessary maps
- */
- bmapsz = roundup(howmany(fmax, NBBY), sizeof(short));
- blkmap = (char *)calloc(bmapsz, sizeof (char));
- freemap = (char *)calloc(bmapsz, sizeof (char));
- statemap = (char *)calloc(imax+1, sizeof(char));
- lncntp = (short *)calloc(imax+1, sizeof(short));
-
- startinum = imax + 1;
- return (1);
-
-badsb:
- ckfini();
- return (0);
-}
-
-badsb(s)
- char *s;
-{
-
- if (preen)
- printf("%s: ", devname);
- printf("BAD SUPER BLOCK: %s\n", s);
- pwarn("USE -b OPTION TO FSCK TO SPECIFY LOCATION OF AN ALTERNATE\n");
- pfatal("SUPER-BLOCK TO SUPPLY NEEDED INFORMATION; SEE fsck(8).\n");
-}
-
-DINODE *
-ginode()
-{
- daddr_t iblk;
-
- if (inum < ROOTINO || inum > imax)
- return (NULL);
- if (inum < startinum || inum >= startinum + INOPB(&sblock)) {
- iblk = itod(inum, &sblock);
- if (getblk(&inoblk, iblk, sblock.fs_bsize) == NULL) {
- return (NULL);
- }
- startinum = (inum / INOPB(&sblock)) * INOPB(&sblock);
- }
- return (&inoblk.b_un.b_dinode[inum % INOPB(&sblock)]);
-}
-
-ftypeok(dp)
- DINODE *dp;
-{
- switch (dp->di_mode & IFMT) {
-
- case IFDIR:
- case IFREG:
- case IFBLK:
- case IFCHR:
- case IFMPC:
- case IFMPB:
- return (1);
-
- default:
- return (0);
- }
-}
-
-reply(s)
- char *s;
-{
- char line[80];
-
- if (preen)
- pfatal("INTERNAL ERROR: GOT TO reply()");
- rplyflag = 1;
- printf("\n%s? ", s);
- if (nflag || dfile.wfdes < 0) {
- printf(" no\n\n");
- return (0);
- }
- if (yflag) {
- printf(" yes\n\n");
- return (1);
- }
- if (getline(stdin, line, sizeof(line)) == EOF)
- errexit("\n");
- printf("\n");
- if (line[0] == 'y' || line[0] == 'Y')
- return (1);
- else
- return (0);
-}
-
-getline(fp, loc, maxlen)
- FILE *fp;
- char *loc;
-{
- register n;
- register char *p, *lastloc;
-
- p = loc;
- lastloc = &p[maxlen-1];
- while ((n = getc(fp)) != '\n') {
- if (n == EOF)
- return (EOF);
- if (!isspace(n) && p < lastloc)
- *p++ = n;
- }
- *p = 0;
- return (p - loc);
-}
-
-BUFAREA *
-getblk(bp, blk, size)
- daddr_t blk;
- register BUFAREA *bp;
- int size;
-{
- register struct filecntl *fcp;
- daddr_t dblk;
-
- fcp = &dfile;
- dblk = fsbtodb(&sblock, blk);
- if (bp->b_bno == dblk)
- return (bp);
- flush(fcp, bp);
- if (bread(fcp, bp->b_un.b_buf, dblk, size) != 0) {
- bp->b_bno = dblk;
- bp->b_size = size;
- return (bp);
- }
- bp->b_bno = (daddr_t)-1;
- return (NULL);
-}
-
-flush(fcp, bp)
- struct filecntl *fcp;
- register BUFAREA *bp;
-{
-
- if (bp->b_dirty)
- bwrite(fcp, bp->b_un.b_buf, bp->b_bno, bp->b_size);
- bp->b_dirty = 0;
-}
-
-rwerr(s, blk)
- char *s;
- daddr_t blk;
-{
-
- if (preen == 0)
- printf("\n");
- pfatal("CANNOT %s: BLK %ld", s, blk);
- if (reply("CONTINUE") == 0)
- errexit("Program terminated\n");
-}
-
-ckfini()
-{
-
- flush(&dfile, &fileblk);
- flush(&dfile, &sblk);
- if (sblk.b_bno != SBLOCK) {
- sblk.b_bno = SBLOCK;
- sbdirty();
- flush(&dfile, &sblk);
- }
- flush(&dfile, &inoblk);
- close(dfile.rfdes);
- close(dfile.wfdes);
-}
-
-pinode()
-{
- register DINODE *dp;
- register char *p;
- char uidbuf[200];
- char *ctime();
-
- printf(" I=%u ", inum);
- if ((dp = ginode()) == NULL)
- return;
- printf(" OWNER=");
- if (getpw((int)dp->di_uid, uidbuf) == 0) {
- for (p = uidbuf; *p != ':'; p++);
- *p = 0;
- printf("%s ", uidbuf);
- }
- else {
- printf("%d ", dp->di_uid);
- }
- printf("MODE=%o\n", dp->di_mode);
- if (preen)
- printf("%s: ", devname);
- printf("SIZE=%ld ", dp->di_size);
- p = ctime(&dp->di_mtime);
- printf("MTIME=%12.12s %4.4s ", p+4, p+20);
-}
-
-copy(fp, tp, size)
- register char *tp, *fp;
- unsigned size;
-{
-
- while (size--)
- *tp++ = *fp++;
-}
-
-makecg()
-{
- int c, blk;
- daddr_t dbase, d, dmin, dmax;
- long i, j, s;
- register struct csum *cs;
- register DINODE *dp;
-
- sblock.fs_cstotal.cs_nbfree = 0;
- sblock.fs_cstotal.cs_nffree = 0;
- sblock.fs_cstotal.cs_nifree = 0;
- sblock.fs_cstotal.cs_ndir = 0;
- for (i = 0; i < howmany(sblock.fs_cssize, sblock.fs_bsize); i++) {
- sblock.fs_csp[i] = (struct csum *)calloc(1, sblock.fs_bsize);
- getblk((char *)sblock.fs_csp[i],
- sblock.fs_csaddr + (i * sblock.fs_frag), sblock.fs_bsize);
- }
- for (c = 0; c < sblock.fs_ncg; c++) {
- dbase = cgbase(c, &sblock);
- dmax = dbase + sblock.fs_fpg;
- if (dmax > sblock.fs_size)
- dmax = sblock.fs_size;
- dmin = cgdmin(c, &sblock) - dbase;
- cs = &sblock.fs_cs(&sblock, c);
- cgrp.cg_time = time(0);
- cgrp.cg_magic = CG_MAGIC;
- cgrp.cg_cgx = c;
- cgrp.cg_ncyl = sblock.fs_cpg;
- cgrp.cg_niblk = sblock.fs_ipg;
- cgrp.cg_ndblk = dmax - dbase;
- cgrp.cg_cs.cs_ndir = 0;
- cgrp.cg_cs.cs_nffree = 0;
- cgrp.cg_cs.cs_nbfree = 0;
- cgrp.cg_cs.cs_nifree = 0;
- cgrp.cg_rotor = dmin;
- cgrp.cg_frotor = dmin;
- cgrp.cg_irotor = 0;
- for (i = 0; i < sblock.fs_frag; i++)
- cgrp.cg_frsum[i] = 0;
- inum = sblock.fs_ipg * c;
- for (i = 0; i < sblock.fs_ipg; inum++, i++) {
- dp = ginode();
- if (dp == NULL)
- continue;
- if (ALLOC) {
- if (DIR)
- cgrp.cg_cs.cs_ndir++;
- setbit(cgrp.cg_iused, i);
- continue;
- }
- cgrp.cg_cs.cs_nifree++;
- clrbit(cgrp.cg_iused, i);
- }
- while (i < MAXIPG) {
- clrbit(cgrp.cg_iused, i);
- i++;
- }
- for (s = 0; s < MAXCPG; s++)
- for (i = 0; i < NRPOS; i++)
- cgrp.cg_b[s][i] = 0;
- if (c == 0) {
- dmin += howmany(sblock.fs_cssize, sblock.fs_bsize) * sblock.fs_frag;
- }
- for (d = 0; d < dmin; d++)
- clrbit(cgrp.cg_free, d);
- for (; (d + sblock.fs_frag) <= dmax - dbase; d += sblock.fs_frag) {
- j = 0;
- for (i = 0; i < sblock.fs_frag; i++) {
- if (!getbmap(dbase+d+i)) {
- setbit(cgrp.cg_free, d+i);
- j++;
- } else
- clrbit(cgrp.cg_free, d+i);
- }
- if (j == sblock.fs_frag) {
- cgrp.cg_cs.cs_nbfree++;
- cgrp.cg_b[cbtocylno(&sblock, d)]
- [cbtorpos(&sblock, d)]++;
- } else if (j > 0) {
- cgrp.cg_cs.cs_nffree += j;
- blk = ((cgrp.cg_free[d / NBBY] >> (d % NBBY)) &
- (0xff >> (NBBY - sblock.fs_frag)));
- fragacct(&sblock, blk, cgrp.cg_frsum, 1);
- }
- }
- for (j = d; d < dmax - dbase; d++) {
- if (!getbmap(dbase+d)) {
- setbit(cgrp.cg_free, d);
- cgrp.cg_cs.cs_nffree++;
- } else
- clrbit(cgrp.cg_free, d);
- }
- if (j != d) {
- blk = ((cgrp.cg_free[j / NBBY] >> (j % NBBY)) &
- (0xff >> (NBBY - sblock.fs_frag)));
- fragacct(&sblock, blk, cgrp.cg_frsum, 1);
- }
- for (; d < MAXBPG(&sblock); d++)
- clrbit(cgrp.cg_free, d);
- sblock.fs_cstotal.cs_nffree += cgrp.cg_cs.cs_nffree;
- sblock.fs_cstotal.cs_nbfree += cgrp.cg_cs.cs_nbfree;
- sblock.fs_cstotal.cs_nifree += cgrp.cg_cs.cs_nifree;
- sblock.fs_cstotal.cs_ndir += cgrp.cg_cs.cs_ndir;
- *cs = cgrp.cg_cs;
- bwrite(&dfile, &cgrp, fsbtodb(&sblock, cgtod(c, &sblock)),
- roundup(sblock.fs_cgsize, DEV_BSIZE));
- }
- for (i = 0; i < howmany(sblock.fs_cssize, sblock.fs_bsize); i++) {
- bwrite(&dfile, (char *)sblock.fs_csp[i],
- fsbtodb(&sblock, sblock.fs_csaddr + (i * sblock.fs_frag)),
- sblock.fs_bsize);
- }
- sblock.fs_ronly = 0;
- sblock.fs_fmod = 0;
- sbdirty();
-}
-
-/*
- * update the frsum fields to reflect addition or deletion
- * of some frags
- */
-fragacct(fs, fragmap, fraglist, cnt)
- struct fs *fs;
- int fragmap;
- long fraglist[];
- int cnt;
-{
- int inblk;
- register int field, subfield;
- register int siz, pos;
-
- inblk = (int)(fragtbl[fs->fs_frag][fragmap] << 1);
- fragmap <<= 1;
- for (siz = 1; siz < fs->fs_frag; siz++) {
- if (((1 << siz) & inblk) == 0)
- continue;
- field = around[siz];
- subfield = inside[siz];
- for (pos = siz; pos <= fs->fs_frag; pos++) {
- if ((fragmap & field) == subfield) {
- fraglist[siz] += cnt;
- pos += siz;
- field <<= siz;
- subfield <<= siz;
- }
- field <<= 1;
- subfield <<= 1;
- }
- }
-}
-
-findino(dirp)
- register DIRECT *dirp;
-{
- register char *p1, *p2;
-
- if (dirp->d_ino == 0)
- return (KEEPON);
- for (p1 = dirp->d_name, p2 = srchname;*p2++ == *p1; p1++) {
- if (*p1 == 0 || p1 == &dirp->d_name[DIRSIZ-1]) {
- if (dirp->d_ino >= ROOTINO && dirp->d_ino <= imax)
- parentdir = dirp->d_ino;
- return (STOP);
- }
- }
- return (KEEPON);
-}
-
-mkentry(dirp)
- register DIRECT *dirp;
-{
- register ino_t in;
- register char *p;
-
- if (dirp->d_ino)
- return (KEEPON);
- dirp->d_ino = orphan;
- in = orphan;
- p = &dirp->d_name[8];
- *--p = 0;
- while (p > dirp->d_name) {
- *--p = (in % 10) + '0';
- in /= 10;
- }
- *p = '#';
- return (ALTERD|STOP);
-}
-
-chgdd(dirp)
- register DIRECT *dirp;
-{
- if (dirp->d_name[0] == '.' && dirp->d_name[1] == '.' &&
- dirp->d_name[2] == 0) {
- dirp->d_ino = lfdir;
- return (ALTERD|STOP);
- }
- return (KEEPON);
-}
-
-linkup()
-{
- register DINODE *dp;
- register lostdir;
- register ino_t pdir;
-
- if ((dp = ginode()) == NULL)
- return (0);
- lostdir = DIR;
- pdir = parentdir;
- pwarn("UNREF %s ", lostdir ? "DIR" : "FILE");
- pinode();
- if (preen && dp->di_size == 0)
- return (0);
- if (preen)
- printf(" (RECONNECTED)\n");
- else
- if (reply("RECONNECT") == 0)
- return (0);
- orphan = inum;
- if (lfdir == 0) {
- inum = ROOTINO;
- if ((dp = ginode()) == NULL) {
- inum = orphan;
- return (0);
- }
- pfunc = findino;
- srchname = lfname;
- filsize = dp->di_size;
- parentdir = 0;
- ckinode(dp, DATA);
- inum = orphan;
- if ((lfdir = parentdir) == 0) {
- pfatal("SORRY. NO lost+found DIRECTORY");
- printf("\n\n");
- return (0);
- }
- }
- inum = lfdir;
- if ((dp = ginode()) == NULL || !DIR || getstate() != FSTATE) {
- inum = orphan;
- pfatal("SORRY. NO lost+found DIRECTORY");
- printf("\n\n");
- return (0);
- }
- if (dp->di_size % sblock.fs_bsize) {
- dp->di_size = roundup(dp->di_size, sblock.fs_bsize);
- inodirty();
- }
- filsize = dp->di_size;
- inum = orphan;
- pfunc = mkentry;
- if ((ckinode(dp, DATA) & ALTERD) == 0) {
- pfatal("SORRY. NO SPACE IN lost+found DIRECTORY");
- printf("\n\n");
- return (0);
- }
- declncnt();
- if (lostdir) {
- pfunc = chgdd;
- dp = ginode();
- filsize = dp->di_size;
- ckinode(dp, DATA);
- inum = lfdir;
- if ((dp = ginode()) != NULL) {
- dp->di_nlink++;
- inodirty();
- setlncnt(getlncnt()+1);
- }
- inum = orphan;
- pwarn("DIR I=%u CONNECTED. ", orphan);
- printf("PARENT WAS I=%u\n", pdir);
- if (preen == 0)
- printf("\n");
- }
- return (1);
-}
-
-bread(fcp, buf, blk, size)
- daddr_t blk;
- register struct filecntl *fcp;
- register size;
- char *buf;
-{
- if (lseek(fcp->rfdes, blk * DEV_BSIZE, 0) < 0)
- rwerr("SEEK", blk);
- else if (read(fcp->rfdes, buf, size) == size)
- return (1);
- rwerr("READ", blk);
- return (0);
-}
-
-bwrite(fcp, buf, blk, size)
- daddr_t blk;
- register struct filecntl *fcp;
- register size;
- char *buf;
-{
-
- if (fcp->wfdes < 0)
- return (0);
- if (lseek(fcp->wfdes, blk * DEV_BSIZE, 0) < 0)
- rwerr("SEEK", blk);
- else if (write(fcp->wfdes, buf, size) == size) {
- fcp->mod = 1;
- return (1);
- }
- rwerr("WRITE", blk);
- return (0);
-}
-
-catch()
-{
-
- ckfini();
- exit(12);
-}
-
-/*
- * block operations
- */
-
-isblock(fs, cp, h)
- struct fs *fs;
- unsigned char *cp;
- int h;
-{
- unsigned char mask;
-
- switch (fs->fs_frag) {
- case 8:
- return (cp[h] == 0xff);
- case 4:
- mask = 0x0f << ((h & 0x1) << 2);
- return ((cp[h >> 1] & mask) == mask);
- case 2:
- mask = 0x03 << ((h & 0x3) << 1);
- return ((cp[h >> 2] & mask) == mask);
- case 1:
- mask = 0x01 << (h & 0x7);
- return ((cp[h >> 3] & mask) == mask);
- default:
- fprintf(stderr, "isblock bad fs_frag %d\n", fs->fs_frag);
- return;
- }
-}