1 /* $NetBSD: pass4.c,v 1.10 2009/10/19 18:41:08 bouyer 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. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 /* 33 * Copyright (c) 1997 Manuel Bouyer. 34 * 35 * Redistribution and use in source and binary forms, with or without 36 * modification, are permitted provided that the following conditions 37 * are met: 38 * 1. Redistributions of source code must retain the above copyright 39 * notice, this list of conditions and the following disclaimer. 40 * 2. Redistributions in binary form must reproduce the above copyright 41 * notice, this list of conditions and the following disclaimer in the 42 * documentation and/or other materials provided with the distribution. 43 * 44 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 45 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 46 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 47 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 48 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 49 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 50 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 51 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 52 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 53 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 54 */ 55 56 #include <sys/cdefs.h> 57 #ifndef lint 58 #if 0 59 static char sccsid[] = "@(#)pass4.c 8.1 (Berkeley) 6/5/93"; 60 #else 61 __RCSID("$NetBSD: pass4.c,v 1.10 2009/10/19 18:41:08 bouyer Exp $"); 62 #endif 63 #endif /* not lint */ 64 65 #include <sys/param.h> 66 #include <sys/time.h> 67 #include <ufs/ext2fs/ext2fs_dinode.h> 68 #include <ufs/ext2fs/ext2fs.h> 69 #include <stdlib.h> 70 #include <string.h> 71 72 #include "fsutil.h" 73 #include "fsck.h" 74 #include "extern.h" 75 76 void 77 pass4(void) 78 { 79 ino_t inumber; 80 struct zlncnt *zlnp; 81 struct ext2fs_dinode *dp; 82 struct inodesc idesc; 83 int n; 84 85 memset(&idesc, 0, sizeof(struct inodesc)); 86 idesc.id_type = ADDR; 87 idesc.id_func = pass4check; 88 for (inumber = EXT2_ROOTINO; inumber <= lastino; inumber++) { 89 if (inumber < EXT2_FIRSTINO && inumber > EXT2_ROOTINO) 90 continue; 91 idesc.id_number = inumber; 92 switch (statemap[inumber]) { 93 94 case FSTATE: 95 case DFOUND: 96 n = lncntp[inumber]; 97 if (n) 98 adjust(&idesc, (short)n); 99 else { 100 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 101 if (zlnp->zlncnt == inumber) { 102 zlnp->zlncnt = zlnhead->zlncnt; 103 zlnp = zlnhead; 104 zlnhead = zlnhead->next; 105 free((char *)zlnp); 106 clri(&idesc, "UNREF", 1); 107 break; 108 } 109 } 110 break; 111 112 case DSTATE: 113 clri(&idesc, "UNREF", 1); 114 break; 115 116 case DCLEAR: 117 dp = ginode(inumber); 118 if (inosize(dp) == 0) { 119 clri(&idesc, "ZERO LENGTH", 1); 120 break; 121 } 122 /* fall through */ 123 case FCLEAR: 124 clri(&idesc, "BAD/DUP", 1); 125 break; 126 127 case USTATE: 128 break; 129 130 default: 131 errexit("BAD STATE %d FOR INODE I=%llu", 132 statemap[inumber], (unsigned long long)inumber); 133 } 134 } 135 } 136 137 int 138 pass4check(struct inodesc *idesc) 139 { 140 struct dups *dlp; 141 int nfrags, res = KEEPON; 142 daddr_t blkno = idesc->id_blkno; 143 144 for (nfrags = idesc->id_numfrags; nfrags > 0; blkno++, nfrags--) { 145 if (chkrange(blkno, 1)) { 146 res = SKIP; 147 } else if (testbmap(blkno)) { 148 for (dlp = duplist; dlp; dlp = dlp->next) { 149 if (dlp->dup != blkno) 150 continue; 151 dlp->dup = duplist->dup; 152 dlp = duplist; 153 duplist = duplist->next; 154 free((char *)dlp); 155 break; 156 } 157 if (dlp == 0) { 158 clrbmap(blkno); 159 n_blks--; 160 } 161 } 162 } 163 return (res); 164 } 165