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af6726e657
count of zero and instead encode this information in the inode state. Pass 4 performed a linear search of this list for each inode in the file system, which performs poorly if the list is long. Reviewed by: sam & keramida (an earlier version of the patch), mckusick MFC after: 1 month
149 lines
3.8 KiB
C
149 lines
3.8 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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* 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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#if 0
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#ifndef lint
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static const char sccsid[] = "@(#)pass4.c 8.4 (Berkeley) 4/28/95";
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#endif /* not lint */
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#endif
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.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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void
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pass4(void)
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{
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ino_t inumber;
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union dinode *dp;
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struct inodesc idesc;
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int i, n, cg;
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memset(&idesc, 0, sizeof(struct inodesc));
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idesc.id_type = ADDR;
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idesc.id_func = pass4check;
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for (cg = 0; cg < sblock.fs_ncg; cg++) {
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if (got_siginfo) {
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printf("%s: phase 4: cyl group %d of %d (%d%%)\n",
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cdevname, cg, sblock.fs_ncg,
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cg * 100 / sblock.fs_ncg);
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got_siginfo = 0;
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}
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if (got_sigalarm) {
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setproctitle("%s p4 %d%%", cdevname,
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cg * 100 / sblock.fs_ncg);
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got_sigalarm = 0;
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}
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inumber = cg * sblock.fs_ipg;
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for (i = 0; i < inostathead[cg].il_numalloced; i++, inumber++) {
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if (inumber < ROOTINO)
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continue;
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idesc.id_number = inumber;
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switch (inoinfo(inumber)->ino_state) {
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case FZLINK:
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case DZLINK:
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if (inoinfo(inumber)->ino_linkcnt == 0) {
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clri(&idesc, "UNREF", 1);
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break;
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}
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/* fall through */
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case FSTATE:
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case DFOUND:
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n = inoinfo(inumber)->ino_linkcnt;
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if (n) {
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adjust(&idesc, (short)n);
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break;
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}
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break;
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case DSTATE:
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clri(&idesc, "UNREF", 1);
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break;
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case DCLEAR:
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dp = ginode(inumber);
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if (DIP(dp, di_size) == 0) {
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clri(&idesc, "ZERO LENGTH", 1);
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break;
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}
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/* fall through */
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case FCLEAR:
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clri(&idesc, "BAD/DUP", 1);
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break;
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case USTATE:
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break;
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default:
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errx(EEXIT, "BAD STATE %d FOR INODE I=%d",
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inoinfo(inumber)->ino_state, inumber);
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}
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}
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}
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}
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int
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pass4check(struct inodesc *idesc)
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{
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struct dups *dlp;
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int nfrags, res = KEEPON;
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ufs2_daddr_t blkno = idesc->id_blkno;
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for (nfrags = idesc->id_numfrags; nfrags > 0; blkno++, nfrags--) {
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if (chkrange(blkno, 1)) {
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res = SKIP;
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} else if (testbmap(blkno)) {
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for (dlp = duplist; dlp; dlp = dlp->next) {
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if (dlp->dup != blkno)
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continue;
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dlp->dup = duplist->dup;
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dlp = duplist;
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duplist = duplist->next;
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free((char *)dlp);
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break;
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}
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if (dlp == 0) {
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clrbmap(blkno);
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n_blks--;
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}
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}
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}
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return (res);
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}
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