1 /* $NetBSD: pass4.c,v 1.13 2005/09/13 04:14:17 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/param.h> 33 #include <sys/time.h> 34 #include <sys/mount.h> 35 #include <ufs/ufs/inode.h> 36 37 #define vnode uvnode 38 #define buf ubuf 39 #define panic call_panic 40 #include <ufs/lfs/lfs.h> 41 42 #include <err.h> 43 #include <stdlib.h> 44 #include <string.h> 45 46 #include "bufcache.h" 47 #include "vnode.h" 48 #include "lfs_user.h" 49 50 #include "fsutil.h" 51 #include "fsck.h" 52 #include "extern.h" 53 54 extern SEGUSE *seg_table; 55 56 void 57 pass4(void) 58 { 59 ino_t inumber; 60 struct zlncnt *zlnp; 61 struct ufs1_dinode *dp; 62 struct inodesc idesc; 63 int n; 64 65 memset(&idesc, 0, sizeof(struct inodesc)); 66 idesc.id_type = ADDR; 67 idesc.id_func = pass4check; 68 for (inumber = ROOTINO; inumber <= lastino; inumber++) { 69 idesc.id_number = inumber; 70 switch (statemap[inumber]) { 71 72 case FSTATE: 73 case DFOUND: 74 n = lncntp[inumber]; 75 if (n) 76 adjust(&idesc, (short) n); 77 else { 78 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 79 if (zlnp->zlncnt == inumber) { 80 zlnp->zlncnt = zlnhead->zlncnt; 81 zlnp = zlnhead; 82 zlnhead = zlnhead->next; 83 free((char *) zlnp); 84 clri(&idesc, "UNREF", 1); 85 break; 86 } 87 } 88 break; 89 90 case DSTATE: 91 clri(&idesc, "UNREF", 1); 92 break; 93 94 case DCLEAR: 95 dp = ginode(inumber); 96 if (dp->di_size == 0) { 97 clri(&idesc, "ZERO LENGTH", 1); 98 break; 99 } 100 /* fall through */ 101 case FCLEAR: 102 clri(&idesc, "BAD/DUP", 1); 103 break; 104 105 case USTATE: 106 break; 107 108 default: 109 err(8, "BAD STATE %d FOR INODE I=%llu\n", 110 statemap[inumber], (unsigned long long)inumber); 111 } 112 } 113 } 114 115 int 116 pass4check(struct inodesc * idesc) 117 { 118 struct dups *dlp; 119 int ndblks, res = KEEPON; 120 daddr_t blkno = idesc->id_blkno; 121 SEGUSE *sup; 122 struct ubuf *bp; 123 int sn, doanyway = 0; 124 125 sn = dtosn(fs, blkno); 126 /* If preening, bmap is not valid for non-active segs */ 127 if (preen && !(seg_table[sn].su_flags & SEGUSE_ACTIVE)) 128 doanyway = 1; 129 for (ndblks = fragstofsb(fs, idesc->id_numfrags); ndblks > 0; blkno++, ndblks--) { 130 if (chkrange(blkno, 1)) { 131 res = SKIP; 132 } else if (testbmap(blkno) || doanyway) { 133 for (dlp = duplist; dlp; dlp = dlp->next) { 134 if (dlp->dup != blkno) 135 continue; 136 dlp->dup = duplist->dup; 137 dlp = duplist; 138 duplist = duplist->next; 139 free((char *) dlp); 140 break; 141 } 142 if (dlp == 0) { 143 clrbmap(blkno); 144 LFS_SEGENTRY(sup, fs, sn, bp); 145 sup->su_nbytes -= fsbtob(fs, 1); 146 VOP_BWRITE(bp); 147 seg_table[sn].su_nbytes -= fsbtob(fs, 1); 148 ++fs->lfs_bfree; 149 n_blks--; 150 } 151 } 152 } 153 return (res); 154 } 155