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freebsd/sbin/fsck_ifs/pass5.c
Kirk McKusick 142d8d2f40 Teach fsck about snapshot files. These changes should have no 
effect on operation of fsck on filesystems without snapshots.
If you get compilation errors, be sure that you have copies of
/usr/include/sys/mount.h (1.94), /usr/include/sys/stat.h (1.21),
and /usr/include/ufs/ffs/fs.h (1.16) as of July 4, 2000 or later.
2000-07-06 02:03:11 +00:00

428 lines
12 KiB
C
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/*
* 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[] = "@(#)pass5.c 8.9 (Berkeley) 4/28/95";
#endif
static const char rcsid[] =
"$FreeBSD$";
#endif /* not lint */
#include <sys/param.h>
#include <ufs/ufs/dinode.h>
#include <ufs/ffs/fs.h>
#include <err.h>
#include <string.h>
#include "fsck.h"
void
pass5()
{
int c, blk, frags, basesize, sumsize, mapsize, savednrpos = 0;
int inomapsize, blkmapsize, astart, aend, ustart, uend;
struct fs *fs = &sblock;
struct cg *cg = &cgrp;
ufs_daddr_t dbase, dmax;
ufs_daddr_t d;
long i, j, k, l, m, n;
struct csum *cs;
struct csum cstotal;
struct inodesc idesc[3];
char buf[MAXBSIZE];
register struct cg *newcg = (struct cg *)buf;
struct ocg *ocg = (struct ocg *)buf;
inoinfo(WINO)->ino_state = USTATE;
memset(newcg, 0, (size_t)fs->fs_cgsize);
newcg->cg_niblk = fs->fs_ipg;
if (cvtlevel >= 3) {
if (fs->fs_maxcontig < 2 && fs->fs_contigsumsize > 0) {
if (preen)
pwarn("DELETING CLUSTERING MAPS\n");
if (preen || reply("DELETE CLUSTERING MAPS")) {
fs->fs_contigsumsize = 0;
doinglevel1 = 1;
sbdirty();
}
}
if (fs->fs_maxcontig > 1) {
char *doit = 0;
if (fs->fs_contigsumsize < 1) {
doit = "CREAT";
} else if (fs->fs_contigsumsize < fs->fs_maxcontig &&
fs->fs_contigsumsize < FS_MAXCONTIG) {
doit = "EXPAND";
}
if (doit) {
i = fs->fs_contigsumsize;
fs->fs_contigsumsize =
MIN(fs->fs_maxcontig, FS_MAXCONTIG);
if (CGSIZE(fs) > fs->fs_bsize) {
pwarn("CANNOT %s CLUSTER MAPS\n", doit);
fs->fs_contigsumsize = i;
} else if (preen ||
reply("CREATE CLUSTER MAPS")) {
if (preen)
pwarn("%sING CLUSTER MAPS\n",
doit);
fs->fs_cgsize =
fragroundup(fs, CGSIZE(fs));
doinglevel1 = 1;
sbdirty();
}
}
}
}
switch ((int)fs->fs_postblformat) {
case FS_42POSTBLFMT:
basesize = (char *)(&ocg->cg_btot[0]) -
(char *)(&ocg->cg_firstfield);
sumsize = &ocg->cg_iused[0] - (u_int8_t *)(&ocg->cg_btot[0]);
mapsize = &ocg->cg_free[howmany(fs->fs_fpg, NBBY)] -
(u_char *)&ocg->cg_iused[0];
blkmapsize = howmany(fs->fs_fpg, NBBY);
inomapsize = &ocg->cg_free[0] - (u_char *)&ocg->cg_iused[0];
ocg->cg_magic = CG_MAGIC;
savednrpos = fs->fs_nrpos;
fs->fs_nrpos = 8;
break;
case FS_DYNAMICPOSTBLFMT:
newcg->cg_btotoff =
&newcg->cg_space[0] - (u_char *)(&newcg->cg_firstfield);
newcg->cg_boff =
newcg->cg_btotoff + fs->fs_cpg * sizeof(int32_t);
newcg->cg_iusedoff = newcg->cg_boff +
fs->fs_cpg * fs->fs_nrpos * sizeof(u_int16_t);
newcg->cg_freeoff =
newcg->cg_iusedoff + howmany(fs->fs_ipg, NBBY);
inomapsize = newcg->cg_freeoff - newcg->cg_iusedoff;
newcg->cg_nextfreeoff = newcg->cg_freeoff +
howmany(fs->fs_cpg * fs->fs_spc / NSPF(fs), NBBY);
blkmapsize = newcg->cg_nextfreeoff - newcg->cg_freeoff;
if (fs->fs_contigsumsize > 0) {
newcg->cg_clustersumoff = newcg->cg_nextfreeoff -
sizeof(u_int32_t);
newcg->cg_clustersumoff =
roundup(newcg->cg_clustersumoff, sizeof(u_int32_t));
newcg->cg_clusteroff = newcg->cg_clustersumoff +
(fs->fs_contigsumsize + 1) * sizeof(u_int32_t);
newcg->cg_nextfreeoff = newcg->cg_clusteroff +
howmany(fs->fs_cpg * fs->fs_spc / NSPB(fs), NBBY);
}
newcg->cg_magic = CG_MAGIC;
basesize = &newcg->cg_space[0] -
(u_char *)(&newcg->cg_firstfield);
sumsize = newcg->cg_iusedoff - newcg->cg_btotoff;
mapsize = newcg->cg_nextfreeoff - newcg->cg_iusedoff;
break;
default:
inomapsize = blkmapsize = sumsize = 0; /* keep lint happy */
errx(EEXIT, "UNKNOWN ROTATIONAL TABLE FORMAT %d",
fs->fs_postblformat);
}
memset(&idesc[0], 0, sizeof idesc);
for (i = 0; i < 3; i++) {
idesc[i].id_type = ADDR;
if (doinglevel2)
idesc[i].id_fix = FIX;
}
memset(&cstotal, 0, sizeof(struct csum));
j = blknum(fs, fs->fs_size + fs->fs_frag - 1);
for (i = fs->fs_size; i < j; i++)
setbmap(i);
for (c = 0; c < fs->fs_ncg; c++) {
getblk(&cgblk, cgtod(fs, c), fs->fs_cgsize);
if (!cg_chkmagic(cg))
pfatal("CG %d: BAD MAGIC NUMBER\n", c);
dbase = cgbase(fs, c);
dmax = dbase + fs->fs_fpg;
if (dmax > fs->fs_size)
dmax = fs->fs_size;
newcg->cg_time = cg->cg_time;
newcg->cg_cgx = c;
if (c == fs->fs_ncg - 1)
newcg->cg_ncyl = fs->fs_ncyl % fs->fs_cpg;
else
newcg->cg_ncyl = fs->fs_cpg;
newcg->cg_ndblk = dmax - dbase;
if (fs->fs_contigsumsize > 0)
newcg->cg_nclusterblks = newcg->cg_ndblk / fs->fs_frag;
newcg->cg_cs.cs_ndir = 0;
newcg->cg_cs.cs_nffree = 0;
newcg->cg_cs.cs_nbfree = 0;
newcg->cg_cs.cs_nifree = fs->fs_ipg;
if (cg->cg_rotor < newcg->cg_ndblk)
newcg->cg_rotor = cg->cg_rotor;
else
newcg->cg_rotor = 0;
if (cg->cg_frotor < newcg->cg_ndblk)
newcg->cg_frotor = cg->cg_frotor;
else
newcg->cg_frotor = 0;
if (cg->cg_irotor < newcg->cg_niblk)
newcg->cg_irotor = cg->cg_irotor;
else
newcg->cg_irotor = 0;
memset(&newcg->cg_frsum[0], 0, sizeof newcg->cg_frsum);
memset(&cg_blktot(newcg)[0], 0,
(size_t)(sumsize + mapsize));
if (fs->fs_postblformat == FS_42POSTBLFMT)
ocg->cg_magic = CG_MAGIC;
j = fs->fs_ipg * c;
for (i = 0; i < inostathead[c].il_numalloced; j++, i++) {
switch (inoinfo(j)->ino_state) {
case USTATE:
break;
case DSTATE:
case DCLEAR:
case DFOUND:
newcg->cg_cs.cs_ndir++;
/* fall through */
case FSTATE:
case FCLEAR:
newcg->cg_cs.cs_nifree--;
setbit(cg_inosused(newcg), i);
break;
default:
if (j < ROOTINO)
break;
errx(EEXIT, "BAD STATE %d FOR INODE I=%ld",
inoinfo(j)->ino_state, j);
}
}
if (c == 0)
for (i = 0; i < ROOTINO; i++) {
setbit(cg_inosused(newcg), i);
newcg->cg_cs.cs_nifree--;
}
for (i = 0, d = dbase;
d < dmax;
d += fs->fs_frag, i += fs->fs_frag) {
frags = 0;
for (j = 0; j < fs->fs_frag; j++) {
if (testbmap(d + j))
continue;
setbit(cg_blksfree(newcg), i + j);
frags++;
}
if (frags == fs->fs_frag) {
newcg->cg_cs.cs_nbfree++;
j = cbtocylno(fs, i);
cg_blktot(newcg)[j]++;
cg_blks(fs, newcg, j)[cbtorpos(fs, i)]++;
if (fs->fs_contigsumsize > 0)
setbit(cg_clustersfree(newcg),
i / fs->fs_frag);
} else if (frags > 0) {
newcg->cg_cs.cs_nffree += frags;
blk = blkmap(fs, cg_blksfree(newcg), i);
ffs_fragacct(fs, blk, newcg->cg_frsum, 1);
}
}
if (fs->fs_contigsumsize > 0) {
int32_t *sump = cg_clustersum(newcg);
u_char *mapp = cg_clustersfree(newcg);
int map = *mapp++;
int bit = 1;
int run = 0;
for (i = 0; i < newcg->cg_nclusterblks; i++) {
if ((map & bit) != 0) {
run++;
} else if (run != 0) {
if (run > fs->fs_contigsumsize)
run = fs->fs_contigsumsize;
sump[run]++;
run = 0;
}
if ((i & (NBBY - 1)) != (NBBY - 1)) {
bit <<= 1;
} else {
map = *mapp++;
bit = 1;
}
}
if (run != 0) {
if (run > fs->fs_contigsumsize)
run = fs->fs_contigsumsize;
sump[run]++;
}
}
cstotal.cs_nffree += newcg->cg_cs.cs_nffree;
cstotal.cs_nbfree += newcg->cg_cs.cs_nbfree;
cstotal.cs_nifree += newcg->cg_cs.cs_nifree;
cstotal.cs_ndir += newcg->cg_cs.cs_ndir;
cs = &fs->fs_cs(fs, c);
if (memcmp(&newcg->cg_cs, cs, sizeof *cs) != 0 &&
dofix(&idesc[0], "FREE BLK COUNT(S) WRONG IN SUPERBLK")) {
memmove(cs, &newcg->cg_cs, sizeof *cs);
sbdirty();
}
if (doinglevel1) {
memmove(cg, newcg, (size_t)fs->fs_cgsize);
cgdirty();
continue;
}
if ((memcmp(newcg, cg, basesize) != 0 ||
memcmp(&cg_blktot(newcg)[0],
&cg_blktot(cg)[0], sumsize) != 0) &&
dofix(&idesc[2], "SUMMARY INFORMATION BAD")) {
memmove(cg, newcg, (size_t)basesize);
memmove(&cg_blktot(cg)[0],
&cg_blktot(newcg)[0], (size_t)sumsize);
cgdirty();
}
if (debug) {
for (i = 0; i < inomapsize; i++) {
j = cg_inosused(newcg)[i];
k = cg_inosused(cg)[i];
if (j == k)
continue;
for (m = 0, l = 1; m < NBBY; m++, l <<= 1) {
if ((j & l) == (k & l))
continue;
n = c * fs->fs_ipg + i * NBBY + m;
if ((j & l) != 0)
pwarn("%s INODE %d MARKED %s\n",
"ALLOCATED", n, "FREE");
else
pwarn("%s INODE %d MARKED %s\n",
"UNALLOCATED", n, "USED");
}
}
astart = ustart = -1;
for (i = 0; i < blkmapsize; i++) {
j = cg_blksfree(cg)[i];
k = cg_blksfree(newcg)[i];
if (j == k)
continue;
for (m = 0, l = 1; m < NBBY; m++, l <<= 1) {
if ((j & l) == (k & l))
continue;
n = c * fs->fs_fpg + i * NBBY + m;
if ((j & l) != 0) {
if (astart == -1) {
astart = aend = n;
continue;
}
if (aend + 1 == n) {
aend = n;
continue;
}
pwarn("%s FRAGS %d-%d %s\n",
"ALLOCATED", astart, aend,
"MARKED FREE");
astart = aend = n;
} else {
if (ustart == -1) {
ustart = uend = n;
continue;
}
if (uend + 1 == n) {
uend = n;
continue;
}
pwarn("%s FRAGS %d-%d %s\n",
"UNALLOCATED", ustart, uend,
"MARKED USED");
ustart = uend = n;
}
}
}
if (astart != -1)
pwarn("%s FRAGS %d-%d %s\n",
"ALLOCATED", astart, aend,
"MARKED FREE");
if (ustart != -1)
pwarn("%s FRAGS %d-%d %s\n",
"UNALLOCATED", ustart, uend,
"MARKED USED");
}
if (usedsoftdep) {
for (i = 0; i < inomapsize; i++) {
j = cg_inosused(newcg)[i];
if ((cg_inosused(cg)[i] & j) == j)
continue;
for (k = 0; k < NBBY; k++) {
if ((j & (1 << k)) == 0)
continue;
if (cg_inosused(cg)[i] & (1 << k))
continue;
pwarn("ALLOCATED INODE %d MARKED FREE\n",
c * fs->fs_ipg + i * NBBY + k);
}
}
for (i = 0; i < blkmapsize; i++) {
j = cg_blksfree(cg)[i];
if ((cg_blksfree(newcg)[i] & j) == j)
continue;
for (k = 0; k < NBBY; k++) {
if ((j & (1 << k)) == 0)
continue;
if (cg_blksfree(newcg)[i] & (1 << k))
continue;
pwarn("ALLOCATED FRAG %d MARKED FREE\n",
c * fs->fs_fpg + i * NBBY + k);
}
}
}
if (memcmp(cg_inosused(newcg), cg_inosused(cg), mapsize) != 0 &&
dofix(&idesc[1], "BLK(S) MISSING IN BIT MAPS")) {
memmove(cg_inosused(cg), cg_inosused(newcg),
(size_t)mapsize);
cgdirty();
}
}
if (fs->fs_postblformat == FS_42POSTBLFMT)
fs->fs_nrpos = savednrpos;
if (memcmp(&cstotal, &fs->fs_cstotal, sizeof *cs) != 0
&& dofix(&idesc[0], "FREE BLK COUNT(S) WRONG IN SUPERBLK")) {
memmove(&fs->fs_cstotal, &cstotal, sizeof *cs);
fs->fs_ronly = 0;
fs->fs_fmod = 0;
sbdirty();
}
}
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