pass0.c revision 1.28
1 /* $NetBSD: pass0.c,v 1.28 2006/07/18 23:37:13 perseant Exp $ */ 2 3 /*- 4 * Copyright (c) 1999, 2000, 2001, 2002, 2003 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Konrad E. Schroder <perseant (at) hhhh.org>. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 /*- 39 * Copyright (c) 1980, 1986, 1993 40 * The Regents of the University of California. All rights reserved. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. Neither the name of the University nor the names of its contributors 51 * may be used to endorse or promote products derived from this software 52 * without specific prior written permission. 53 * 54 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 55 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 56 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 57 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 58 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 59 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 60 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 61 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 62 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 63 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 64 * SUCH DAMAGE. 65 */ 66 67 #include <sys/types.h> 68 #include <sys/param.h> 69 #include <sys/time.h> 70 #include <sys/buf.h> 71 #include <sys/mount.h> 72 73 #include <ufs/ufs/inode.h> 74 #include <ufs/ufs/dir.h> 75 #define vnode uvnode 76 #include <ufs/lfs/lfs.h> 77 #undef vnode 78 79 #include <assert.h> 80 #include <err.h> 81 #include <stdio.h> 82 #include <stdlib.h> 83 #include <string.h> 84 85 #include "bufcache.h" 86 #include "vnode.h" 87 #include "lfs_user.h" 88 89 #include "fsck.h" 90 #include "extern.h" 91 #include "fsutil.h" 92 93 extern int fake_cleanseg; 94 95 /* 96 * Pass 0. Check the LFS partial segments for valid checksums, correcting 97 * if necessary. Also check for valid offsets for inode and finfo blocks. 98 */ 99 /* 100 * XXX more could be done here---consistency between inode-held blocks and 101 * finfo blocks, for one thing. 102 */ 103 104 #define dbshift (fs->lfs_bshift - fs->lfs_blktodb) 105 106 void 107 pass0(void) 108 { 109 daddr_t daddr; 110 CLEANERINFO *cip; 111 IFILE *ifp; 112 struct ubuf *bp, *cbp; 113 ino_t ino, plastino, nextino, lowfreeino, freehd; 114 char *visited; 115 int writeit = 0; 116 117 /* 118 * Check the inode free list for inuse inodes, and cycles. 119 * Make sure that all free inodes are in fact on the list. 120 */ 121 visited = (char *) malloc(maxino * sizeof(*visited)); 122 if (visited == NULL) 123 err(1, NULL); 124 memset(visited, 0, maxino * sizeof(*visited)); 125 126 plastino = 0; 127 lowfreeino = maxino; 128 LFS_CLEANERINFO(cip, fs, cbp); 129 freehd = ino = cip->free_head; 130 brelse(cbp); 131 132 while (ino) { 133 if (lowfreeino > ino) 134 lowfreeino = ino; 135 if (ino >= maxino) { 136 pwarn("OUT OF RANGE INO %llu ON FREE LIST\n", 137 (unsigned long long)ino); 138 break; 139 } 140 if (visited[ino]) { 141 pwarn("INO %llu ALREADY FOUND ON FREE LIST\n", 142 (unsigned long long)ino); 143 if (preen || reply("FIX") == 1) { 144 /* plastino can't be zero */ 145 LFS_IENTRY(ifp, fs, plastino, bp); 146 ifp->if_nextfree = 0; 147 VOP_BWRITE(bp); 148 } 149 break; 150 } 151 visited[ino] = 1; 152 LFS_IENTRY(ifp, fs, ino, bp); 153 nextino = ifp->if_nextfree; 154 daddr = ifp->if_daddr; 155 brelse(bp); 156 if (daddr) { 157 pwarn("INO %llu WITH DADDR 0x%llx ON FREE LIST\n", 158 (unsigned long long)ino, (long long) daddr); 159 if (preen || reply("FIX") == 1) { 160 if (plastino == 0) { 161 freehd = nextino; 162 sbdirty(); 163 } else { 164 LFS_IENTRY(ifp, fs, plastino, bp); 165 ifp->if_nextfree = nextino; 166 VOP_BWRITE(bp); 167 } 168 ino = nextino; 169 continue; 170 } 171 } 172 plastino = ino; 173 ino = nextino; 174 } 175 176 177 /* 178 * Make sure all free inodes were found on the list 179 */ 180 for (ino = maxino - 1; ino > ROOTINO; --ino) { 181 if (visited[ino]) 182 continue; 183 184 LFS_IENTRY(ifp, fs, ino, bp); 185 if (ifp->if_daddr) { 186 brelse(bp); 187 continue; 188 } 189 pwarn("INO %llu FREE BUT NOT ON FREE LIST\n", 190 (unsigned long long)ino); 191 if (preen || reply("FIX") == 1) { 192 assert(ino != freehd); 193 ifp->if_nextfree = freehd; 194 VOP_BWRITE(bp); 195 196 freehd = ino; 197 sbdirty(); 198 199 /* If freelist was empty, this is the tail */ 200 if (plastino == 0) 201 plastino = ino; 202 } else 203 brelse(bp); 204 } 205 206 LFS_CLEANERINFO(cip, fs, cbp); 207 if (cip->free_head != freehd) { 208 /* They've already given us permission for this change */ 209 cip->free_head = freehd; 210 writeit = 1; 211 } 212 if (freehd != fs->lfs_freehd) { 213 pwarn("FREE LIST HEAD IN SUPERBLOCK SHOULD BE %d (WAS %d)\n", 214 (int)fs->lfs_freehd, (int)freehd); 215 if (preen || reply("FIX")) { 216 fs->lfs_freehd = freehd; 217 sbdirty(); 218 } 219 } 220 if (cip->free_tail != plastino) { 221 pwarn("FREE LIST TAIL SHOULD BE %llu (WAS %llu)\n", 222 (unsigned long long)plastino, 223 (unsigned long long)cip->free_tail); 224 if (preen || reply("FIX")) { 225 cip->free_tail = plastino; 226 writeit = 1; 227 } 228 } 229 230 if (writeit) 231 LFS_SYNC_CLEANERINFO(cip, fs, cbp, writeit); 232 else 233 brelse(cbp); 234 235 if (fs->lfs_freehd == 0) { 236 pwarn("%sree list head is 0x0\n", preen ? "f" : "F"); 237 if (preen || reply("FIX")) 238 extend_ifile(fs); 239 } 240 } 241
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