1 /* $NetBSD: pass4.c,v 1.14 1997/09/20 06:16:32 lukem 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/cdefs.h> 37 #ifndef lint 38 #if 0 39 static char sccsid[] = "@(#)pass4.c 8.4 (Berkeley) 4/28/95"; 40 #else 41 __RCSID("$NetBSD: pass4.c,v 1.14 1997/09/20 06:16:32 lukem Exp $"); 42 #endif 43 #endif /* not lint */ 44 45 #include <sys/param.h> 46 #include <sys/time.h> 47 48 #include <ufs/ufs/dinode.h> 49 #include <ufs/ffs/fs.h> 50 51 #include <err.h> 52 #include <stdlib.h> 53 #include <string.h> 54 55 #include "fsutil.h" 56 #include "fsck.h" 57 #include "extern.h" 58 59 void 60 pass4() 61 { 62 ino_t inumber; 63 struct zlncnt *zlnp; 64 struct dinode *dp; 65 struct inodesc idesc; 66 int n; 67 68 memset(&idesc, 0, sizeof(struct inodesc)); 69 idesc.id_type = ADDR; 70 idesc.id_func = pass4check; 71 for (inumber = ROOTINO; inumber <= lastino; inumber++) { 72 idesc.id_number = inumber; 73 switch (statemap[inumber]) { 74 75 case FSTATE: 76 case DFOUND: 77 n = lncntp[inumber]; 78 if (n) 79 adjust(&idesc, (short)n); 80 else { 81 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 82 if (zlnp->zlncnt == inumber) { 83 zlnp->zlncnt = zlnhead->zlncnt; 84 zlnp = zlnhead; 85 zlnhead = zlnhead->next; 86 free((char *)zlnp); 87 clri(&idesc, "UNREF", 1); 88 break; 89 } 90 } 91 break; 92 93 case DSTATE: 94 clri(&idesc, "UNREF", 1); 95 break; 96 97 case DCLEAR: 98 dp = ginode(inumber); 99 if (dp->di_size == 0) { 100 clri(&idesc, "ZERO LENGTH", 1); 101 break; 102 } 103 /* fall through */ 104 case FCLEAR: 105 clri(&idesc, "BAD/DUP", 1); 106 break; 107 108 case USTATE: 109 break; 110 111 default: 112 errx(EEXIT, "BAD STATE %d FOR INODE I=%d", 113 statemap[inumber], inumber); 114 } 115 } 116 } 117 118 int 119 pass4check(idesc) 120 struct inodesc *idesc; 121 { 122 struct dups *dlp; 123 int nfrags, res = KEEPON; 124 ufs_daddr_t blkno = idesc->id_blkno; 125 126 for (nfrags = idesc->id_numfrags; nfrags > 0; blkno++, nfrags--) { 127 if (chkrange(blkno, 1)) { 128 res = SKIP; 129 } else if (testbmap(blkno)) { 130 for (dlp = duplist; dlp; dlp = dlp->next) { 131 if (dlp->dup != blkno) 132 continue; 133 dlp->dup = duplist->dup; 134 dlp = duplist; 135 duplist = duplist->next; 136 free((char *)dlp); 137 break; 138 } 139 if (dlp == 0) { 140 clrbmap(blkno); 141 n_blks--; 142 } 143 } 144 } 145 return (res); 146 } 147