1 /* 2 * Copyright (c) 1980, 1986, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)pass4.c 8.4 (Berkeley) 4/28/95 30 * $FreeBSD: src/sbin/fsck/pass4.c,v 1.7.2.1 2001/01/23 23:11:07 iedowse Exp $ 31 */ 32 33 #include <sys/param.h> 34 35 #include <vfs/ufs/dinode.h> 36 #include <vfs/ufs/fs.h> 37 38 #include <err.h> 39 #include <string.h> 40 41 #include "fsck.h" 42 43 void 44 pass4(void) 45 { 46 ufs1_ino_t inumber; 47 struct zlncnt *zlnp; 48 struct ufs1_dinode *dp; 49 struct inodesc idesc; 50 int i, n, cg; 51 52 memset(&idesc, 0, sizeof(struct inodesc)); 53 idesc.id_type = ADDR; 54 idesc.id_func = pass4check; 55 for (cg = 0; cg < sblock.fs_ncg; cg++) { 56 if (got_siginfo) { 57 printf("%s: phase 4: cyl group %d of %d (%d%%)\n", 58 cdevname, cg, sblock.fs_ncg, 59 cg * 100 / sblock.fs_ncg); 60 got_siginfo = 0; 61 } 62 inumber = cg * sblock.fs_ipg; 63 for (i = 0; i < inostathead[cg].il_numalloced; i++, inumber++) { 64 if (inumber < UFS_ROOTINO) 65 continue; 66 idesc.id_number = inumber; 67 switch (inoinfo(inumber)->ino_state) { 68 69 case FSTATE: 70 case DFOUND: 71 n = inoinfo(inumber)->ino_linkcnt; 72 if (n) { 73 adjust(&idesc, (short)n); 74 break; 75 } 76 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) { 77 if (zlnp->zlncnt == inumber) { 78 zlnp->zlncnt = zlnhead->zlncnt; 79 zlnp = zlnhead; 80 zlnhead = zlnhead->next; 81 free((char *)zlnp); 82 clri(&idesc, "UNREF", 1); 83 break; 84 } 85 } 86 break; 87 88 case DSTATE: 89 clri(&idesc, "UNREF", 1); 90 break; 91 92 case DCLEAR: 93 dp = ginode(inumber); 94 if (dp->di_size == 0) { 95 clri(&idesc, "ZERO LENGTH", 1); 96 break; 97 } 98 /* fall through */ 99 case FCLEAR: 100 clri(&idesc, "BAD/DUP", 1); 101 break; 102 103 case USTATE: 104 break; 105 106 default: 107 errx(EEXIT, "BAD STATE %d FOR INODE I=%d", 108 inoinfo(inumber)->ino_state, inumber); 109 } 110 } 111 } 112 } 113 114 int 115 pass4check(struct inodesc *idesc) 116 { 117 struct dups *dlp; 118 int nfrags, res = KEEPON; 119 ufs_daddr_t blkno = idesc->id_blkno; 120 121 for (nfrags = idesc->id_numfrags; nfrags > 0; blkno++, nfrags--) { 122 if (chkrange(blkno, 1)) { 123 res = SKIP; 124 } else if (testbmap(blkno)) { 125 for (dlp = duplist; dlp; dlp = dlp->next) { 126 if (dlp->dup != blkno) 127 continue; 128 dlp->dup = duplist->dup; 129 dlp = duplist; 130 duplist = duplist->next; 131 free((char *)dlp); 132 break; 133 } 134 if (dlp == NULL) { 135 clrbmap(blkno); 136 n_blks--; 137 } 138 } 139 } 140 return (res); 141 } 142