1 /* $OpenBSD: pass4.c,v 1.20 2011/04/16 16:37:21 otto Exp $ */ 2 /* $NetBSD: pass4.c,v 1.11 1996/09/27 22:45:17 christos Exp $ */ 3 4 /* 5 * Copyright (c) 1980, 1986, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #include <sys/param.h> 34 #include <sys/time.h> 35 #include <ufs/ufs/dinode.h> 36 #include <ufs/ffs/fs.h> 37 #include <stdio.h> 38 #include <stdlib.h> 39 #include <string.h> 40 41 #include "fsutil.h" 42 #include "fsck.h" 43 #include "extern.h" 44 45 static ino_t info_inumber; 46 47 static int 48 pass4_info(char *buf, size_t buflen) 49 { 50 return (snprintf(buf, buflen, "phase 4, inode %d/%d", 51 info_inumber, lastino) > 0); 52 } 53 54 void 55 pass4(void) 56 { 57 ino_t inumber; 58 struct zlncnt *zlnp; 59 union dinode *dp; 60 struct inodesc idesc; 61 int n, c, i; 62 63 memset(&idesc, 0, sizeof(struct inodesc)); 64 idesc.id_type = ADDR; 65 idesc.id_func = pass4check; 66 info_fn = pass4_info; 67 for (c = 0; c < sblock.fs_ncg; c++) { 68 inumber = c * sblock.fs_ipg; 69 for (i = 0; i < inostathead[c].il_numalloced; i++, inumber++) { 70 if (inumber < ROOTINO) 71 continue; 72 idesc.id_number = inumber; 73 switch (GET_ISTATE(inumber)) { 74 75 case FSTATE: 76 case DFOUND: 77 n = ILNCOUNT(inumber); 78 if (n) { 79 adjust(&idesc, (short)n); 80 break; 81 } 82 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 83 if (zlnp->zlncnt == inumber) { 84 zlnp->zlncnt = zlnhead->zlncnt; 85 zlnp = zlnhead; 86 zlnhead = zlnhead->next; 87 free((char *)zlnp); 88 clri(&idesc, "UNREF", 1); 89 break; 90 } 91 break; 92 93 case DSTATE: 94 clri(&idesc, "UNREF", 1); 95 break; 96 97 case DCLEAR: 98 dp = ginode(inumber); 99 if (DIP(dp, di_size) == 0) { 100 clri(&idesc, "ZERO LENGTH", 1); 101 break; 102 } 103 /* FALLTHROUGH */ 104 case FCLEAR: 105 clri(&idesc, "BAD/DUP", 1); 106 break; 107 108 case USTATE: 109 break; 110 111 default: 112 errexit("BAD STATE %d FOR INODE I=%d\n", 113 GET_ISTATE(inumber), inumber); 114 } 115 } 116 } 117 info_fn = NULL; 118 } 119 120 int 121 pass4check(struct inodesc *idesc) 122 { 123 struct dups *dlp; 124 int nfrags, res = KEEPON; 125 daddr64_t blkno = idesc->id_blkno; 126 127 for (nfrags = idesc->id_numfrags; nfrags > 0; blkno++, nfrags--) { 128 if (chkrange(blkno, 1)) { 129 res = SKIP; 130 } else if (testbmap(blkno)) { 131 for (dlp = duplist; dlp; dlp = dlp->next) { 132 if (dlp->dup != blkno) 133 continue; 134 dlp->dup = duplist->dup; 135 dlp = duplist; 136 duplist = duplist->next; 137 free(dlp); 138 break; 139 } 140 if (dlp == 0) { 141 clrbmap(blkno); 142 n_blks--; 143 } 144 } 145 } 146 return (res); 147 } 148