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pass5.c revision 1.5.2.1
      1  1.5.2.1  perseant /* $NetBSD: pass5.c,v 1.5.2.1 2000/09/14 18:53:21 perseant Exp $	 */
      2      1.4  perseant 
      3      1.4  perseant /*-
      4      1.4  perseant  * Copyright (c) 2000 The NetBSD Foundation, Inc.
      5      1.4  perseant  * All rights reserved.
      6      1.4  perseant  *
      7      1.4  perseant  * This code is derived from software contributed to The NetBSD Foundation
      8      1.4  perseant  * by Konrad E. Schroder <perseant (at) hhhh.org>.
      9      1.4  perseant  *
     10      1.4  perseant  * Redistribution and use in source and binary forms, with or without
     11      1.4  perseant  * modification, are permitted provided that the following conditions
     12      1.4  perseant  * are met:
     13      1.4  perseant  * 1. Redistributions of source code must retain the above copyright
     14      1.4  perseant  *    notice, this list of conditions and the following disclaimer.
     15      1.4  perseant  * 2. Redistributions in binary form must reproduce the above copyright
     16      1.4  perseant  *    notice, this list of conditions and the following disclaimer in the
     17      1.4  perseant  *    documentation and/or other materials provided with the distribution.
     18      1.4  perseant  * 3. All advertising materials mentioning features or use of this software
     19      1.4  perseant  *    must display the following acknowledgement:
     20      1.4  perseant  *      This product includes software developed by the NetBSD
     21      1.4  perseant  *      Foundation, Inc. and its contributors.
     22      1.4  perseant  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23      1.4  perseant  *    contributors may be used to endorse or promote products derived
     24      1.4  perseant  *    from this software without specific prior written permission.
     25      1.4  perseant  *
     26      1.4  perseant  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27      1.4  perseant  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28      1.4  perseant  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29      1.4  perseant  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30      1.4  perseant  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31      1.4  perseant  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32      1.4  perseant  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33      1.4  perseant  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34      1.4  perseant  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35      1.4  perseant  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36      1.4  perseant  * POSSIBILITY OF SUCH DAMAGE.
     37      1.4  perseant  */
     38      1.1  perseant 
     39      1.1  perseant #include <sys/param.h>
     40      1.1  perseant #include <sys/time.h>
     41      1.1  perseant #include <ufs/ufs/dinode.h>
     42      1.3  perseant #include <ufs/ufs/dir.h>
     43      1.3  perseant #include <sys/mount.h>
     44      1.3  perseant #include <ufs/lfs/lfs.h>
     45      1.3  perseant 
     46      1.1  perseant #include <string.h>
     47      1.1  perseant #include "fsck.h"
     48      1.1  perseant #include "extern.h"
     49      1.3  perseant #include "fsutil.h"
     50      1.3  perseant 
     51      1.4  perseant extern SEGUSE  *seg_table;
     52      1.1  perseant 
     53      1.1  perseant void
     54      1.1  perseant pass5()
     55      1.1  perseant {
     56      1.4  perseant 	SEGUSE         *su;
     57      1.3  perseant 	struct bufarea *bp;
     58      1.4  perseant 	int             i;
     59  1.5.2.1  perseant 	unsigned long   bb; /* total number of used blocks (lower bound) */
     60  1.5.2.1  perseant 	unsigned long   ubb; /* upper bound number of used blocks */
     61  1.5.2.1  perseant 	unsigned long   avail; /* blocks available for writing */
     62      1.3  perseant 
     63      1.3  perseant 	/*
     64      1.3  perseant 	 * Check segment holdings against actual holdings.  Check for
     65      1.3  perseant 	 * "clean" segments that contain live data.
     66      1.3  perseant 	 */
     67  1.5.2.1  perseant 	avail = 0;
     68  1.5.2.1  perseant 	bb = ubb = 0;
     69      1.4  perseant 	for (i = 0; i < sblock.lfs_nseg; i++) {
     70      1.3  perseant 		su = lfs_gseguse(i, &bp);
     71      1.3  perseant 		if (!(su->su_flags & SEGUSE_DIRTY) &&
     72      1.4  perseant 		    seg_table[i].su_nbytes > 0) {
     73      1.3  perseant 			pwarn("%d bytes contained in 'clean' segment %d\n",
     74      1.3  perseant 			      seg_table[i].su_nbytes, i);
     75      1.4  perseant 			if (preen || reply("fix")) {
     76      1.3  perseant 				su->su_flags |= SEGUSE_DIRTY;
     77      1.3  perseant 				dirty(bp);
     78      1.3  perseant 			}
     79      1.3  perseant 		}
     80      1.3  perseant 		if ((su->su_flags & SEGUSE_DIRTY) &&
     81      1.4  perseant 		    su->su_nbytes != seg_table[i].su_nbytes) {
     82      1.5  perseant 			pwarn("segment %d claims %d bytes but has %d",
     83      1.3  perseant 			      i, su->su_nbytes, seg_table[i].su_nbytes);
     84      1.5  perseant 			if (su->su_nbytes > seg_table[i].su_nbytes)
     85      1.5  perseant 				pwarn(" (high by %d)\n", su->su_nbytes -
     86      1.5  perseant 				      seg_table[i].su_nbytes);
     87      1.5  perseant 			else
     88      1.5  perseant 				pwarn(" (low by %d)\n", - su->su_nbytes +
     89      1.5  perseant 				      seg_table[i].su_nbytes);
     90      1.4  perseant 			if (preen || reply("fix")) {
     91      1.3  perseant 				su->su_nbytes = seg_table[i].su_nbytes;
     92      1.3  perseant 				dirty(bp);
     93      1.1  perseant 			}
     94      1.1  perseant 		}
     95  1.5.2.1  perseant 		if (su->su_flags & SEGUSE_DIRTY) {
     96  1.5.2.1  perseant 			bb += btodb(su->su_nbytes) + su->su_nsums;
     97  1.5.2.1  perseant 			ubb += btodb(su->su_nbytes) + su->su_nsums + fsbtodb(&sblock, su->su_ninos);
     98  1.5.2.1  perseant 		} else {
     99  1.5.2.1  perseant 			avail += fsbtodb(&sblock, sblock.lfs_ssize);
    100  1.5.2.1  perseant 			if (su->su_flags & SEGUSE_SUPERBLOCK)
    101  1.5.2.1  perseant 				avail -= btodb(LFS_SBPAD);
    102  1.5.2.1  perseant 		}
    103      1.3  perseant 		bp->b_flags &= ~B_INUSE;
    104  1.5.2.1  perseant 	}
    105  1.5.2.1  perseant 	/* Also may be available bytes in current seg */
    106  1.5.2.1  perseant 	i = datosn(&sblock, sblock.lfs_offset);
    107  1.5.2.1  perseant 	avail += sntoda(&sblock, i + 1) - sblock.lfs_offset;
    108  1.5.2.1  perseant 	/* But do not count minfreesegs */
    109  1.5.2.1  perseant 	avail -= fsbtodb(&sblock, sblock.lfs_ssize) *
    110  1.5.2.1  perseant 		(sblock.lfs_minfreeseg - (sblock.lfs_minfreeseg / 2));
    111  1.5.2.1  perseant 
    112  1.5.2.1  perseant 	if (avail != sblock.lfs_avail) {
    113  1.5.2.1  perseant 		pwarn("avail given as %d, should be %ld\n", sblock.lfs_avail,
    114  1.5.2.1  perseant 		      avail);
    115  1.5.2.1  perseant 		if (preen || reply("fix")) {
    116  1.5.2.1  perseant 			sblock.lfs_avail = avail;
    117  1.5.2.1  perseant 			sbdirty();
    118  1.5.2.1  perseant 		}
    119  1.5.2.1  perseant 	}
    120  1.5.2.1  perseant 	if (sblock.lfs_bfree > sblock.lfs_dsize - bb ||
    121  1.5.2.1  perseant 	    sblock.lfs_bfree < sblock.lfs_dsize - ubb) {
    122  1.5.2.1  perseant 		pwarn("bfree given as %d, should be between %ld and %ld\n",
    123  1.5.2.1  perseant 		      sblock.lfs_bfree, sblock.lfs_dsize - ubb,
    124  1.5.2.1  perseant 		      sblock.lfs_dsize - bb);
    125  1.5.2.1  perseant 		if (preen || reply("fix")) {
    126  1.5.2.1  perseant 			sblock.lfs_bfree = sblock.lfs_dsize - (ubb + bb) / 2;
    127  1.5.2.1  perseant 			sbdirty();
    128  1.5.2.1  perseant 		}
    129      1.1  perseant 	}
    130      1.1  perseant }
    131