1 /* $NetBSD: pass4.c,v 1.5 2001/09/25 00:03:25 wiz 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 48 void 49 pass4() 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\n", 102 statemap[inumber], inumber); 103 } 104 } 105 } 106 107 int 108 pass4check(struct inodesc * idesc) 109 { 110 register struct dups *dlp; 111 int ndblks, res = KEEPON; 112 daddr_t blkno = idesc->id_blkno; 113 114 for (ndblks = fragstodb(&sblock, idesc->id_numfrags); ndblks > 0; blkno++, ndblks--) { 115 if (chkrange(blkno, 1)) { 116 res = SKIP; 117 } else if (testbmap(blkno)) { 118 for (dlp = duplist; dlp; dlp = dlp->next) { 119 if (dlp->dup != blkno) 120 continue; 121 dlp->dup = duplist->dup; 122 dlp = duplist; 123 duplist = duplist->next; 124 free((char *)dlp); 125 break; 126 } 127 if (dlp == 0) { 128 clrbmap(blkno); 129 n_blks--; 130 } 131 } 132 } 133 return (res); 134 } 135