a490e80ce6
UFS2 commit. These bits in essence made any instance of "softupdates expected corrution", (ie blocks marked allocated but not referenced by an inode etc) result in a exit value for fsck_ffs of 2. 2 is part of the magic and appearantly undocumented protocol between fsck_FOO and fsck and means "dump into single user mode ASAP. Sponsored by: DARPA & NAI Labs.
474 lines
13 KiB
C
474 lines
13 KiB
C
/*
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* Copyright (c) 1980, 1986, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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#if 0
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static const char sccsid[] = "@(#)pass5.c 8.9 (Berkeley) 4/28/95";
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#endif
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static const char rcsid[] =
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"$FreeBSD$";
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/sysctl.h>
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#include <ufs/ufs/dinode.h>
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#include <ufs/ffs/fs.h>
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#include <err.h>
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#include <string.h>
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#include "fsck.h"
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static void check_maps(u_char *, u_char *, int, int, const char *, int *, int, int);
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void
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pass5(void)
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{
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int c, i, j, blk, frags, basesize, mapsize;
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int inomapsize, blkmapsize;
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struct fs *fs = &sblock;
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struct cg *cg = &cgrp;
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ufs2_daddr_t d, dbase, dmax;
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int excessdirs, rewritecg = 0;
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struct csum *cs;
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struct csum_total cstotal;
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struct inodesc idesc[3];
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char buf[MAXBSIZE];
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struct cg *newcg = (struct cg *)buf;
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inoinfo(WINO)->ino_state = USTATE;
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memset(newcg, 0, (size_t)fs->fs_cgsize);
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newcg->cg_niblk = fs->fs_ipg;
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if (cvtlevel >= 3) {
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if (fs->fs_maxcontig < 2 && fs->fs_contigsumsize > 0) {
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if (preen)
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pwarn("DELETING CLUSTERING MAPS\n");
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if (preen || reply("DELETE CLUSTERING MAPS")) {
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fs->fs_contigsumsize = 0;
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rewritecg = 1;
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sbdirty();
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}
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}
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if (fs->fs_maxcontig > 1) {
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const char *doit = 0;
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if (fs->fs_contigsumsize < 1) {
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doit = "CREAT";
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} else if (fs->fs_contigsumsize < fs->fs_maxcontig &&
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fs->fs_contigsumsize < FS_MAXCONTIG) {
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doit = "EXPAND";
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}
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if (doit) {
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i = fs->fs_contigsumsize;
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fs->fs_contigsumsize =
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MIN(fs->fs_maxcontig, FS_MAXCONTIG);
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if (CGSIZE(fs) > (u_int)fs->fs_bsize) {
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pwarn("CANNOT %s CLUSTER MAPS\n", doit);
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fs->fs_contigsumsize = i;
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} else if (preen ||
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reply("CREATE CLUSTER MAPS")) {
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if (preen)
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pwarn("%sING CLUSTER MAPS\n",
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doit);
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fs->fs_cgsize =
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fragroundup(fs, CGSIZE(fs));
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rewritecg = 1;
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sbdirty();
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}
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}
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}
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}
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basesize = &newcg->cg_space[0] - (u_char *)(&newcg->cg_firstfield);
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if (sblock.fs_magic == FS_UFS2_MAGIC) {
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newcg->cg_iusedoff = basesize;
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} else {
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/*
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* We reserve the space for the old rotation summary
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* tables for the benefit of old kernels, but do not
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* maintain them in modern kernels. In time, they can
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* go away.
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*/
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newcg->cg_old_btotoff = basesize;
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newcg->cg_old_boff = newcg->cg_old_btotoff +
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fs->fs_old_cpg * sizeof(int32_t);
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newcg->cg_iusedoff = newcg->cg_old_boff +
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fs->fs_old_cpg * fs->fs_old_nrpos * sizeof(u_int16_t);
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memset(&newcg->cg_space[0], 0, newcg->cg_iusedoff - basesize);
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}
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inomapsize = howmany(fs->fs_ipg, NBBY);
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newcg->cg_freeoff = newcg->cg_iusedoff + inomapsize;
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blkmapsize = howmany(fs->fs_fpg, NBBY);
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newcg->cg_nextfreeoff = newcg->cg_freeoff + blkmapsize;
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if (fs->fs_contigsumsize > 0) {
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newcg->cg_clustersumoff = newcg->cg_nextfreeoff -
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sizeof(u_int32_t);
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newcg->cg_clustersumoff =
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roundup(newcg->cg_clustersumoff, sizeof(u_int32_t));
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newcg->cg_clusteroff = newcg->cg_clustersumoff +
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(fs->fs_contigsumsize + 1) * sizeof(u_int32_t);
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newcg->cg_nextfreeoff = newcg->cg_clusteroff +
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howmany(fragstoblks(fs, fs->fs_fpg), NBBY);
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}
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newcg->cg_magic = CG_MAGIC;
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mapsize = newcg->cg_nextfreeoff - newcg->cg_iusedoff;
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memset(&idesc[0], 0, sizeof idesc);
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for (i = 0; i < 3; i++)
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idesc[i].id_type = ADDR;
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memset(&cstotal, 0, sizeof(struct csum_total));
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dmax = blknum(fs, fs->fs_size + fs->fs_frag - 1);
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for (d = fs->fs_size; d < dmax; d++)
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setbmap(d);
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for (c = 0; c < fs->fs_ncg; c++) {
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if (got_siginfo) {
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printf("%s: phase 5: cyl group %d of %d (%d%%)\n",
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cdevname, c, sblock.fs_ncg,
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c * 100 / sblock.fs_ncg);
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got_siginfo = 0;
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}
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getblk(&cgblk, cgtod(fs, c), fs->fs_cgsize);
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if (!cg_chkmagic(cg))
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pfatal("CG %d: BAD MAGIC NUMBER\n", c);
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newcg->cg_time = cg->cg_time;
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newcg->cg_old_time = cg->cg_old_time;
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newcg->cg_cgx = c;
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dbase = cgbase(fs, c);
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dmax = dbase + fs->fs_fpg;
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if (dmax > fs->fs_size)
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dmax = fs->fs_size;
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newcg->cg_ndblk = dmax - dbase;
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if (fs->fs_magic == FS_UFS1_MAGIC) {
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if (c == fs->fs_ncg - 1)
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newcg->cg_old_ncyl = howmany(newcg->cg_ndblk,
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fs->fs_fpg / fs->fs_old_cpg);
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else
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newcg->cg_old_ncyl = fs->fs_old_cpg;
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newcg->cg_old_niblk = fs->fs_ipg;
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newcg->cg_niblk = 0;
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}
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if (fs->fs_contigsumsize > 0)
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newcg->cg_nclusterblks = newcg->cg_ndblk / fs->fs_frag;
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newcg->cg_cs.cs_ndir = 0;
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newcg->cg_cs.cs_nffree = 0;
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newcg->cg_cs.cs_nbfree = 0;
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newcg->cg_cs.cs_nifree = fs->fs_ipg;
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if (cg->cg_rotor < newcg->cg_ndblk)
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newcg->cg_rotor = cg->cg_rotor;
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else
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newcg->cg_rotor = 0;
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if (cg->cg_frotor < newcg->cg_ndblk)
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newcg->cg_frotor = cg->cg_frotor;
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else
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newcg->cg_frotor = 0;
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if (cg->cg_irotor < fs->fs_ipg)
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newcg->cg_irotor = cg->cg_irotor;
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else
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newcg->cg_irotor = 0;
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if (fs->fs_magic == FS_UFS1_MAGIC) {
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newcg->cg_initediblk = 0;
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} else {
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if ((unsigned)cg->cg_initediblk > fs->fs_ipg)
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newcg->cg_initediblk = fs->fs_ipg;
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else
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newcg->cg_initediblk = cg->cg_initediblk;
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}
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memset(&newcg->cg_frsum[0], 0, sizeof newcg->cg_frsum);
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memset(cg_inosused(newcg), 0, (size_t)(mapsize));
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j = fs->fs_ipg * c;
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for (i = 0; i < inostathead[c].il_numalloced; j++, i++) {
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switch (inoinfo(j)->ino_state) {
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case USTATE:
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break;
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case DSTATE:
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case DCLEAR:
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case DFOUND:
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newcg->cg_cs.cs_ndir++;
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/* fall through */
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case FSTATE:
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case FCLEAR:
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newcg->cg_cs.cs_nifree--;
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setbit(cg_inosused(newcg), i);
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break;
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default:
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if (j < (int)ROOTINO)
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break;
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errx(EEXIT, "BAD STATE %d FOR INODE I=%d",
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inoinfo(j)->ino_state, j);
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}
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}
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if (c == 0)
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for (i = 0; i < (int)ROOTINO; i++) {
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setbit(cg_inosused(newcg), i);
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newcg->cg_cs.cs_nifree--;
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}
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for (i = 0, d = dbase;
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d < dmax;
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d += fs->fs_frag, i += fs->fs_frag) {
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frags = 0;
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for (j = 0; j < fs->fs_frag; j++) {
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if (testbmap(d + j))
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continue;
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setbit(cg_blksfree(newcg), i + j);
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frags++;
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}
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if (frags == fs->fs_frag) {
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newcg->cg_cs.cs_nbfree++;
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if (fs->fs_contigsumsize > 0)
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setbit(cg_clustersfree(newcg),
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i / fs->fs_frag);
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} else if (frags > 0) {
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newcg->cg_cs.cs_nffree += frags;
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blk = blkmap(fs, cg_blksfree(newcg), i);
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ffs_fragacct(fs, blk, newcg->cg_frsum, 1);
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}
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}
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if (fs->fs_contigsumsize > 0) {
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int32_t *sump = cg_clustersum(newcg);
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u_char *mapp = cg_clustersfree(newcg);
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int map = *mapp++;
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int bit = 1;
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int run = 0;
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for (i = 0; i < newcg->cg_nclusterblks; i++) {
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if ((map & bit) != 0) {
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run++;
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} else if (run != 0) {
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if (run > fs->fs_contigsumsize)
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run = fs->fs_contigsumsize;
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sump[run]++;
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run = 0;
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}
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if ((i & (NBBY - 1)) != (NBBY - 1)) {
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bit <<= 1;
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} else {
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map = *mapp++;
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bit = 1;
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}
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}
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if (run != 0) {
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if (run > fs->fs_contigsumsize)
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run = fs->fs_contigsumsize;
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sump[run]++;
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}
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}
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cstotal.cs_nffree += newcg->cg_cs.cs_nffree;
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cstotal.cs_nbfree += newcg->cg_cs.cs_nbfree;
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cstotal.cs_nifree += newcg->cg_cs.cs_nifree;
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cstotal.cs_ndir += newcg->cg_cs.cs_ndir;
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cs = &fs->fs_cs(fs, c);
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if (cursnapshot == 0 &&
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memcmp(&newcg->cg_cs, cs, sizeof *cs) != 0 &&
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dofix(&idesc[0], "FREE BLK COUNT(S) WRONG IN SUPERBLK")) {
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memmove(cs, &newcg->cg_cs, sizeof *cs);
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sbdirty();
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}
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if (rewritecg) {
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memmove(cg, newcg, (size_t)fs->fs_cgsize);
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cgdirty();
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continue;
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}
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if (cursnapshot == 0 &&
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memcmp(newcg, cg, basesize) != 0 &&
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dofix(&idesc[2], "SUMMARY INFORMATION BAD")) {
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memmove(cg, newcg, (size_t)basesize);
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cgdirty();
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}
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if (bkgrdflag != 0 || usedsoftdep || debug) {
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excessdirs = cg->cg_cs.cs_ndir - newcg->cg_cs.cs_ndir;
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if (excessdirs < 0) {
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pfatal("LOST %d DIRECTORIES\n", -excessdirs);
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excessdirs = 0;
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}
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if (excessdirs > 0)
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check_maps(cg_inosused(newcg), cg_inosused(cg),
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inomapsize, cg->cg_cgx * fs->fs_ipg, "DIR",
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freedirs, 0, excessdirs);
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check_maps(cg_inosused(newcg), cg_inosused(cg),
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inomapsize, cg->cg_cgx * fs->fs_ipg, "FILE",
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freefiles, excessdirs, fs->fs_ipg);
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check_maps(cg_blksfree(cg), cg_blksfree(newcg),
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blkmapsize, cg->cg_cgx * fs->fs_fpg, "FRAG",
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freeblks, 0, fs->fs_fpg);
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}
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if (cursnapshot == 0 &&
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memcmp(cg_inosused(newcg), cg_inosused(cg), mapsize) != 0 &&
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dofix(&idesc[1], "BLK(S) MISSING IN BIT MAPS")) {
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memmove(cg_inosused(cg), cg_inosused(newcg),
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(size_t)mapsize);
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cgdirty();
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}
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}
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if (cursnapshot == 0 &&
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memcmp(&cstotal, &fs->fs_cstotal, sizeof cstotal) != 0
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&& dofix(&idesc[0], "SUMMARY BLK COUNT(S) WRONG IN SUPERBLK")) {
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memmove(&fs->fs_cstotal, &cstotal, sizeof cstotal);
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fs->fs_ronly = 0;
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fs->fs_fmod = 0;
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sbdirty();
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}
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}
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static void
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check_maps(
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u_char *map1, /* map of claimed allocations */
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u_char *map2, /* map of determined allocations */
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int mapsize, /* size of above two maps */
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int startvalue, /* resource value for first element in map */
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const char *name, /* name of resource found in maps */
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int *opcode, /* sysctl opcode to free resource */
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int skip, /* number of entries to skip before starting to free */
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int limit) /* limit on number of entries to free */
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{
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# define BUFSIZE 16
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char buf[BUFSIZE];
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long i, j, k, l, m, n, size;
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int astart, aend, ustart, uend;
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void (*msg)(const char *fmt, ...);
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if (bkgrdflag)
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msg = pfatal;
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else
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msg = pwarn;
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astart = ustart = aend = uend = -1;
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for (i = 0; i < mapsize; i++) {
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j = *map1++;
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k = *map2++;
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if (j == k)
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continue;
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for (m = 0, l = 1; m < NBBY; m++, l <<= 1) {
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if ((j & l) == (k & l))
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continue;
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n = startvalue + i * NBBY + m;
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if ((j & l) != 0) {
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if (astart == -1) {
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astart = aend = n;
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continue;
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}
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if (aend + 1 == n) {
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aend = n;
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continue;
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}
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if (astart == aend)
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(*msg)("ALLOCATED %s %d MARKED FREE\n",
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name, astart);
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else
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(*msg)("%s %sS %d-%d MARKED FREE\n",
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"ALLOCATED", name, astart, aend);
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astart = aend = n;
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} else {
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if (ustart == -1) {
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ustart = uend = n;
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continue;
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}
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if (uend + 1 == n) {
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uend = n;
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continue;
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}
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size = uend - ustart + 1;
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if (size <= skip) {
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skip -= size;
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ustart = uend = n;
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continue;
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}
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if (skip > 0) {
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ustart += skip;
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size -= skip;
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skip = 0;
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}
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if (size > limit)
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size = limit;
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if (debug && size == 1)
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pwarn("%s %s %d MARKED USED\n",
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"UNALLOCATED", name, ustart);
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else if (debug)
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pwarn("%s %sS %d-%ld MARKED USED\n",
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"UNALLOCATED", name, ustart,
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ustart + size - 1);
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if (bkgrdflag != 0) {
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cmd.value = ustart;
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cmd.size = size;
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if (sysctl(opcode, MIBSIZE, 0, 0,
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&cmd, sizeof cmd) == -1) {
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snprintf(buf, BUFSIZE,
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"FREE %s", name);
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rwerror(buf, cmd.value);
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}
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}
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limit -= size;
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if (limit <= 0)
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return;
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ustart = uend = n;
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}
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}
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}
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if (astart != -1) {
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if (astart == aend)
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(*msg)("ALLOCATED %s %d MARKED FREE\n", name, astart);
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else
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(*msg)("ALLOCATED %sS %d-%d MARKED FREE\n",
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name, astart, aend);
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}
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if (ustart != -1) {
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size = uend - ustart + 1;
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if (size <= skip)
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return;
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|
if (skip > 0) {
|
|
ustart += skip;
|
|
size -= skip;
|
|
}
|
|
if (size > limit)
|
|
size = limit;
|
|
if (debug) {
|
|
if (size == 1)
|
|
pwarn("UNALLOCATED %s %d MARKED USED\n",
|
|
name, ustart);
|
|
else
|
|
pwarn("UNALLOCATED %sS %d-%ld MARKED USED\n",
|
|
name, ustart, ustart + size - 1);
|
|
}
|
|
if (bkgrdflag != 0) {
|
|
cmd.value = ustart;
|
|
cmd.size = size;
|
|
if (sysctl(opcode, MIBSIZE, 0, 0, &cmd,
|
|
sizeof cmd) == -1) {
|
|
snprintf(buf, BUFSIZE, "FREE %s", name);
|
|
rwerror(buf, cmd.value);
|
|
}
|
|
}
|
|
}
|
|
}
|