pass4.c revision 1.2
1/* $NetBSD: pass4.c,v 1.2 1999/07/03 19:55:03 kleink Exp $ */ 2 3/* 4 * Copyright (c) 1980, 1986, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36#include <sys/param.h> 37#include <sys/time.h> 38#include <ufs/ufs/dinode.h> 39#include <sys/mount.h> 40#include <ufs/lfs/lfs.h> 41#include <stdlib.h> 42#include <string.h> 43 44#include "fsutil.h" 45#include "fsck.h" 46#include "extern.h" 47 48void 49pass4() 50{ 51 register ino_t inumber; 52 register struct zlncnt *zlnp; 53 struct dinode *dp; 54 struct inodesc idesc; 55 int n; 56 57 memset(&idesc, 0, sizeof(struct inodesc)); 58 idesc.id_type = ADDR; 59 idesc.id_func = pass4check; 60 for (inumber = ROOTINO; inumber <= lastino; inumber++) { 61 idesc.id_number = inumber; 62 switch (statemap[inumber]) { 63 64 case FSTATE: 65 case DFOUND: 66 n = lncntp[inumber]; 67 if (n) 68 adjust(&idesc, (short)n); 69 else { 70 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 71 if (zlnp->zlncnt == inumber) { 72 zlnp->zlncnt = zlnhead->zlncnt; 73 zlnp = zlnhead; 74 zlnhead = zlnhead->next; 75 free((char *)zlnp); 76 clri(&idesc, "UNREF", 1); 77 break; 78 } 79 } 80 break; 81 82 case DSTATE: 83 clri(&idesc, "UNREF", 1); 84 break; 85 86 case DCLEAR: 87 dp = ginode(inumber); 88 if (dp->di_size == 0) { 89 clri(&idesc, "ZERO LENGTH", 1); 90 break; 91 } 92 /* fall through */ 93 case FCLEAR: 94 clri(&idesc, "BAD/DUP", 1); 95 break; 96 97 case USTATE: 98 break; 99 100 default: 101 errexit("BAD STATE %d FOR INODE I=%d", 102 statemap[inumber], inumber); 103 } 104 } 105} 106 107int 108pass4check(idesc) 109 register struct inodesc *idesc; 110{ 111 register struct dups *dlp; 112 int nfrags, res = KEEPON; 113 daddr_t blkno = idesc->id_blkno; 114 115 for (nfrags = idesc->id_numfrags; nfrags > 0; blkno++, nfrags--) { 116 if (chkrange(blkno, 1)) { 117 res = SKIP; 118 } else if (testbmap(blkno)) { 119 for (dlp = duplist; dlp; dlp = dlp->next) { 120 if (dlp->dup != blkno) 121 continue; 122 dlp->dup = duplist->dup; 123 dlp = duplist; 124 duplist = duplist->next; 125 free((char *)dlp); 126 break; 127 } 128 if (dlp == 0) { 129 clrbmap(blkno); 130 n_blks--; 131 } 132 } 133 } 134 return (res); 135} 136