1 /* $NetBSD: pass4.c,v 1.17 2003/04/02 10:39:26 fvdl 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 1.17 2003/04/02 10:39:26 fvdl 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 union dinode *dp; 65 struct inodesc idesc; 66 int n, i, cg; 67 struct inostat *info; 68 69 memset(&idesc, 0, sizeof(struct inodesc)); 70 idesc.id_type = ADDR; 71 idesc.id_func = pass4check; 72 73 for (cg = 0; cg < sblock->fs_ncg; cg++) { 74 if (got_siginfo) { 75 fprintf(stderr, 76 "%s: phase 4: cyl group %d of %d (%d%%)\n", 77 cdevname(), cg, sblock->fs_ncg, 78 cg * 100 / sblock->fs_ncg); 79 got_siginfo = 0; 80 } 81 inumber = cg * sblock->fs_ipg; 82 for (i = 0; i < inostathead[cg].il_numalloced; i++, inumber++) { 83 if (inumber < ROOTINO) 84 continue; 85 info = inoinfo(inumber); 86 idesc.id_number = inumber; 87 switch (info->ino_state) { 88 case FSTATE: 89 case DFOUND: 90 n = info->ino_linkcnt; 91 if (n) { 92 adjust(&idesc, (short)n); 93 break; 94 } 95 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 96 if (zlnp->zlncnt == inumber) { 97 zlnp->zlncnt = zlnhead->zlncnt; 98 zlnp = zlnhead; 99 zlnhead = zlnhead->next; 100 free((char *)zlnp); 101 clri(&idesc, "UNREF", 1); 102 break; 103 } 104 break; 105 106 case DSTATE: 107 clri(&idesc, "UNREF", 1); 108 break; 109 110 case DCLEAR: 111 dp = ginode(inumber); 112 if (DIP(dp, size) == 0) { 113 clri(&idesc, "ZERO LENGTH", 1); 114 break; 115 } 116 /* fall through */ 117 case FCLEAR: 118 clri(&idesc, "BAD/DUP", 1); 119 break; 120 121 case USTATE: 122 break; 123 124 default: 125 errx(EEXIT, "BAD STATE %d FOR INODE I=%d", 126 info->ino_state, inumber); 127 } 128 } 129 } 130 } 131 132 int 133 pass4check(idesc) 134 struct inodesc *idesc; 135 { 136 struct dups *dlp; 137 int nfrags, res = KEEPON; 138 daddr_t blkno = idesc->id_blkno; 139 140 for (nfrags = idesc->id_numfrags; nfrags > 0; blkno++, nfrags--) { 141 if (chkrange(blkno, 1)) { 142 res = SKIP; 143 } else if (testbmap(blkno)) { 144 for (dlp = duplist; dlp; dlp = dlp->next) { 145 if (dlp->dup != blkno) 146 continue; 147 dlp->dup = duplist->dup; 148 dlp = duplist; 149 duplist = duplist->next; 150 free((char *)dlp); 151 break; 152 } 153 if (dlp == 0) { 154 clrbmap(blkno); 155 n_blks--; 156 } 157 } 158 } 159 return (res); 160 } 161