1 /* $OpenBSD: pass4.c,v 1.26 2020/06/20 07:49:04 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> /* isset clrbit */ 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 %llu/%llu", 51 (unsigned long long)info_inumber, 52 (unsigned long long)lastino) > 0); 53 } 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; 63 u_int c; 64 65 memset(&idesc, 0, sizeof(struct inodesc)); 66 idesc.id_type = ADDR; 67 idesc.id_func = pass4check; 68 info_fn = pass4_info; 69 for (c = 0; c < sblock.fs_ncg; c++) { 70 inumber = c * sblock.fs_ipg; 71 for (i = 0; i < inostathead[c].il_numalloced; i++, inumber++) { 72 if (inumber < ROOTINO) 73 continue; 74 idesc.id_number = inumber; 75 switch (GET_ISTATE(inumber)) { 76 77 case FSTATE: 78 case DFOUND: 79 n = ILNCOUNT(inumber); 80 if (n) { 81 adjust(&idesc, (short)n); 82 break; 83 } 84 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 85 if (zlnp->zlncnt == inumber) { 86 zlnp->zlncnt = zlnhead->zlncnt; 87 zlnp = zlnhead; 88 zlnhead = zlnhead->next; 89 free((char *)zlnp); 90 clri(&idesc, "UNREF", 1); 91 break; 92 } 93 break; 94 95 case DSTATE: 96 clri(&idesc, "UNREF", 1); 97 break; 98 99 case DCLEAR: 100 dp = ginode(inumber); 101 if (DIP(dp, di_size) == 0) { 102 clri(&idesc, "ZERO LENGTH", 1); 103 break; 104 } 105 /* FALLTHROUGH */ 106 case FCLEAR: 107 clri(&idesc, "BAD/DUP", 1); 108 break; 109 110 case USTATE: 111 break; 112 113 default: 114 errexit("BAD STATE %d FOR INODE I=%llu\n", 115 GET_ISTATE(inumber), 116 (unsigned long long)inumber); 117 } 118 } 119 } 120 info_fn = NULL; 121 } 122 123 int 124 pass4check(struct inodesc *idesc) 125 { 126 struct dups *dlp; 127 int nfrags, res = KEEPON; 128 daddr_t blkno = idesc->id_blkno; 129 130 for (nfrags = idesc->id_numfrags; nfrags > 0; blkno++, nfrags--) { 131 if (chkrange(blkno, 1)) { 132 res = SKIP; 133 } else if (testbmap(blkno)) { 134 for (dlp = duplist; dlp; dlp = dlp->next) { 135 if (dlp->dup != blkno) 136 continue; 137 dlp->dup = duplist->dup; 138 dlp = duplist; 139 duplist = duplist->next; 140 free(dlp); 141 break; 142 } 143 if (dlp == 0) { 144 clrbmap(blkno); 145 n_blks--; 146 } 147 } 148 } 149 return (res); 150 } 151