255 lines
7.2 KiB
C
255 lines
7.2 KiB
C
/* $NetBSD: pass5.c,v 1.2 1997/07/10 04:52:40 mikel Exp $ */
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/*
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* Copyright (c) 1997 Manuel Bouyer.
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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 char sccsid[] = "@(#)pass5.c 8.6 (Berkeley) 11/30/94";
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#else
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static char rcsid[] = "$NetBSD: pass5.c,v 1.2 1997/07/10 04:52:40 mikel Exp $";
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#endif
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/time.h>
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#include <ufs/ext2fs/ext2fs_dinode.h>
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#include <ufs/ext2fs/ext2fs.h>
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#include <ufs/ext2fs/ext2fs_extern.h>
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#include <string.h>
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#include <malloc.h>
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#include <stdio.h>
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#include "fsutil.h"
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#include "fsck.h"
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#include "extern.h"
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void print_bmap __P((u_char *,u_int32_t));
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void
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pass5()
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{
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int c, blk, frags, basesize, sumsize, mapsize, savednrpos;
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register struct m_ext2fs *fs = &sblock;
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daddr_t dbase, dmax;
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register daddr_t d;
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register long i, j;
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struct inodesc idesc[3];
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struct bufarea *ino_bitmap = NULL, *blk_bitmap = NULL;
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char *ibmap, *bbmap;
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u_int32_t cs_ndir, cs_nbfree, cs_nifree;
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char msg[255];
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cs_ndir = 0;
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cs_nbfree = 0;
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cs_nifree = 0;
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ibmap = malloc(fs->e2fs_bsize);
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bbmap = malloc(fs->e2fs_bsize);
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if (ibmap == NULL || bbmap == NULL) {
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errexit("out of memory\n");
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}
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for (c = 0; c < fs->e2fs_ncg; c++) {
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u_int32_t nbfree = 0;
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u_int32_t nifree = 0;
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u_int32_t ndirs = 0;
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nbfree = 0;
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nifree = fs->e2fs.e2fs_ipg;
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ndirs = 0;
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if (blk_bitmap == NULL) {
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blk_bitmap = getdatablk(fs->e2fs_gd[c].ext2bgd_b_bitmap,
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fs->e2fs_bsize);
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} else {
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getblk(blk_bitmap, fs->e2fs_gd[c].ext2bgd_b_bitmap,
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fs->e2fs_bsize);
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}
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if (ino_bitmap == NULL) {
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ino_bitmap = getdatablk(fs->e2fs_gd[c].ext2bgd_i_bitmap,
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fs->e2fs_bsize);
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} else {
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getblk(ino_bitmap, fs->e2fs_gd[c].ext2bgd_i_bitmap,
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fs->e2fs_bsize);
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}
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memset(bbmap, 0, fs->e2fs_bsize);
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memset(ibmap, 0, fs->e2fs_bsize);
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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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}
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j = fs->e2fs.e2fs_ipg * c + 1;
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for (i = 0; i < fs->e2fs.e2fs_ipg; j++, i++) {
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if ((j < EXT2_FIRSTINO) && (j != EXT2_ROOTINO)) {
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setbit(ibmap, i);
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nifree--;
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continue;
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}
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if (j > fs->e2fs.e2fs_icount) {
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setbit(ibmap, i);
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continue;
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}
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switch (statemap[j]) {
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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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ndirs++;
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/* fall through */
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case FSTATE:
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case FCLEAR:
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nifree--;
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setbit(ibmap, i);
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break;
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default:
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errexit("BAD STATE %d FOR INODE I=%ld\n",
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statemap[j], j);
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}
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}
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/* fill in unused par of the inode map */
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for (i = fs->e2fs.e2fs_ipg / NBBY; i < fs->e2fs_bsize; i++)
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ibmap[i] = 0xff;
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dbase = c * sblock.e2fs.e2fs_bpg + sblock.e2fs.e2fs_first_dblock +
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cgoverhead;
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dmax = (c+1) * sblock.e2fs.e2fs_bpg + sblock.e2fs.e2fs_first_dblock;
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for (i = 0; i < cgoverhead; i++)
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setbit(bbmap, i); /* blks allocated to fs metadata */
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for (i = cgoverhead, d = dbase;
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d < dmax;
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d ++, i ++) {
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if (testbmap(d) || d >= sblock.e2fs.e2fs_bcount) {
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setbit(bbmap, i);
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continue;
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} else {
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nbfree++;
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}
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}
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cs_nbfree += nbfree;
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cs_nifree += nifree;
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cs_ndir += ndirs;
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if (debug && (fs->e2fs_gd[c].ext2bgd_nbfree != nbfree ||
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fs->e2fs_gd[c].ext2bgd_nifree != nifree ||
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fs->e2fs_gd[c].ext2bgd_ndirs != ndirs)) {
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printf("summary info for cg %d is %d, %d, %d,"
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"should be %d, %d, %d\n", c,
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fs->e2fs_gd[c].ext2bgd_nbfree,
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fs->e2fs_gd[c].ext2bgd_nifree,
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fs->e2fs_gd[c].ext2bgd_ndirs,
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nbfree,
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nifree,
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ndirs);
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}
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snprintf(msg, 255, "SUMMARY INFORMATIONS WRONG FOR CG #%d", c);
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if ((fs->e2fs_gd[c].ext2bgd_nbfree != nbfree ||
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fs->e2fs_gd[c].ext2bgd_nifree != nifree ||
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fs->e2fs_gd[c].ext2bgd_ndirs != ndirs) &&
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dofix(&idesc[0], msg)) {
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fs->e2fs_gd[c].ext2bgd_nbfree = nbfree;
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fs->e2fs_gd[c].ext2bgd_nifree = nifree;
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fs->e2fs_gd[c].ext2bgd_ndirs = ndirs;
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sbdirty();
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}
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if (debug && memcmp(blk_bitmap->b_un.b_buf, bbmap, fs->e2fs_bsize)) {
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printf("blk_bitmap:\n");
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print_bmap(blk_bitmap->b_un.b_buf, fs->e2fs_bsize);
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printf("bbmap:\n");
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print_bmap(bbmap, fs->e2fs_bsize);
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}
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snprintf(msg, 255, "BLK(S) MISSING IN BIT MAPS #%d", c);
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if (memcmp(blk_bitmap->b_un.b_buf, bbmap, fs->e2fs_bsize) &&
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dofix(&idesc[1], msg)) {
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memcpy(blk_bitmap->b_un.b_buf, bbmap, fs->e2fs_bsize);
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dirty(blk_bitmap);
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}
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if (debug && memcmp(ino_bitmap->b_un.b_buf, ibmap, fs->e2fs_bsize)) {
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printf("ino_bitmap:\n");
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print_bmap(ino_bitmap->b_un.b_buf, fs->e2fs_bsize);
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printf("ibmap:\n");
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print_bmap(ibmap, fs->e2fs_bsize);
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}
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snprintf(msg, 255, "INODE(S) MISSING IN BIT MAPS #%d", c);
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if (memcmp(ino_bitmap->b_un.b_buf, ibmap, fs->e2fs_bsize) &&
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dofix(&idesc[1], msg)) {
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memcpy(ino_bitmap->b_un.b_buf, ibmap, fs->e2fs_bsize);
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dirty(ino_bitmap);
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}
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}
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if (debug && (fs->e2fs.e2fs_fbcount != cs_nbfree ||
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fs->e2fs.e2fs_ficount != cs_nifree)) {
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printf("summary info bad in superblock: %d, %d should be %d, %d\n",
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fs->e2fs.e2fs_fbcount, fs->e2fs.e2fs_ficount,
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cs_nbfree, cs_nifree);
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}
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if ((fs->e2fs.e2fs_fbcount != cs_nbfree ||
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fs->e2fs.e2fs_ficount != cs_nifree)
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&& dofix(&idesc[0], "SUPERBLK SUMMARY INFORMATION BAD")) {
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fs->e2fs.e2fs_fbcount = cs_nbfree;
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fs->e2fs.e2fs_ficount = cs_nifree;
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sbdirty();
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}
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}
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void
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print_bmap(map, size)
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u_char *map;
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u_int32_t size;
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{
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int i, j;
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i = 0;
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while (i < size) {
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printf("%u: ",i);
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for (j = 0; j < 16; j++, i++)
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printf("%2x ", (u_int)map[i]) & 0xff;
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printf("\n");
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}
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}
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