1 /* $NetBSD: pass4.c,v 1.22 2005/08/19 02:07:19 christos 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 #include <sys/cdefs.h> 33 #ifndef lint 34 #if 0 35 static char sccsid[] = "@(#)pass4.c 8.4 (Berkeley) 4/28/95"; 36 #else 37 __RCSID("$NetBSD: pass4.c,v 1.22 2005/08/19 02:07:19 christos Exp $"); 38 #endif 39 #endif /* not lint */ 40 41 #include <sys/param.h> 42 #include <sys/time.h> 43 44 #include <ufs/ufs/dinode.h> 45 #include <ufs/ffs/fs.h> 46 47 #include <err.h> 48 #include <stdlib.h> 49 #include <string.h> 50 51 #include "fsutil.h" 52 #include "fsck.h" 53 #include "extern.h" 54 55 void 56 pass4(void) 57 { 58 ino_t inumber; 59 struct zlncnt *zlnp; 60 union dinode *dp; 61 struct inodesc idesc; 62 int n, i, cg; 63 struct inostat *info; 64 65 memset(&idesc, 0, sizeof(struct inodesc)); 66 idesc.id_type = ADDR; 67 idesc.id_func = pass4check; 68 69 for (cg = 0; cg < sblock->fs_ncg; cg++) { 70 if (got_siginfo) { 71 fprintf(stderr, 72 "%s: phase 4: cyl group %d of %d (%d%%)\n", 73 cdevname(), cg, sblock->fs_ncg, 74 cg * 100 / sblock->fs_ncg); 75 got_siginfo = 0; 76 } 77 #ifdef PROGRESS 78 progress_bar(cdevname(), preen ? NULL : "phase 4", 79 cg, sblock->fs_ncg); 80 #endif /* PROGRESS */ 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=%llu", 126 info->ino_state, 127 (unsigned long long)inumber); 128 } 129 } 130 } 131 #ifdef PROGRESS 132 if (preen) 133 progress_add(sblock->fs_ncg); 134 else 135 progress_done(); 136 #endif /* PROGRESS */ 137 } 138 139 int 140 pass4check(struct inodesc *idesc) 141 { 142 struct dups *dlp; 143 int nfrags, res = KEEPON; 144 daddr_t blkno = idesc->id_blkno; 145 146 for (nfrags = idesc->id_numfrags; nfrags > 0; blkno++, nfrags--) { 147 if (chkrange(blkno, 1)) { 148 res = SKIP; 149 } else if (testbmap(blkno)) { 150 for (dlp = duplist; dlp; dlp = dlp->next) { 151 if (dlp->dup != blkno) 152 continue; 153 dlp->dup = duplist->dup; 154 dlp = duplist; 155 duplist = duplist->next; 156 free((char *)dlp); 157 break; 158 } 159 if (dlp == 0) { 160 clrbmap(blkno); 161 n_blks--; 162 } 163 } 164 } 165 return (res); 166 } 167