pass0.c revision 1.29
1 /* $NetBSD: pass0.c,v 1.29 2006/11/09 19:36:36 christos 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 #include <util.h> 85 86 #include "bufcache.h" 87 #include "vnode.h" 88 #include "lfs_user.h" 89 90 #include "fsck.h" 91 #include "extern.h" 92 #include "fsutil.h" 93 94 extern int fake_cleanseg; 95 96 /* 97 * Pass 0. Check the LFS partial segments for valid checksums, correcting 98 * if necessary. Also check for valid offsets for inode and finfo blocks. 99 */ 100 /* 101 * XXX more could be done here---consistency between inode-held blocks and 102 * finfo blocks, for one thing. 103 */ 104 105 #define dbshift (fs->lfs_bshift - fs->lfs_blktodb) 106 107 void 108 pass0(void) 109 { 110 daddr_t daddr; 111 CLEANERINFO *cip; 112 IFILE *ifp; 113 struct ubuf *bp, *cbp; 114 ino_t ino, plastino, nextino, lowfreeino, freehd; 115 char *visited; 116 int writeit = 0; 117 118 /* 119 * Check the inode free list for inuse inodes, and cycles. 120 * Make sure that all free inodes are in fact on the list. 121 */ 122 visited = ecalloc(maxino, sizeof(*visited)); 123 plastino = 0; 124 lowfreeino = maxino; 125 LFS_CLEANERINFO(cip, fs, cbp); 126 freehd = ino = cip->free_head; 127 brelse(cbp); 128 129 while (ino) { 130 if (lowfreeino > ino) 131 lowfreeino = ino; 132 if (ino >= maxino) { 133 pwarn("OUT OF RANGE INO %llu ON FREE LIST\n", 134 (unsigned long long)ino); 135 break; 136 } 137 if (visited[ino]) { 138 pwarn("INO %llu ALREADY FOUND ON FREE LIST\n", 139 (unsigned long long)ino); 140 if (preen || reply("FIX") == 1) { 141 /* plastino can't be zero */ 142 LFS_IENTRY(ifp, fs, plastino, bp); 143 ifp->if_nextfree = 0; 144 VOP_BWRITE(bp); 145 } 146 break; 147 } 148 visited[ino] = 1; 149 LFS_IENTRY(ifp, fs, ino, bp); 150 nextino = ifp->if_nextfree; 151 daddr = ifp->if_daddr; 152 brelse(bp); 153 if (daddr) { 154 pwarn("INO %llu WITH DADDR 0x%llx ON FREE LIST\n", 155 (unsigned long long)ino, (long long) daddr); 156 if (preen || reply("FIX") == 1) { 157 if (plastino == 0) { 158 freehd = nextino; 159 sbdirty(); 160 } else { 161 LFS_IENTRY(ifp, fs, plastino, bp); 162 ifp->if_nextfree = nextino; 163 VOP_BWRITE(bp); 164 } 165 ino = nextino; 166 continue; 167 } 168 } 169 plastino = ino; 170 ino = nextino; 171 } 172 173 174 /* 175 * Make sure all free inodes were found on the list 176 */ 177 for (ino = maxino - 1; ino > ROOTINO; --ino) { 178 if (visited[ino]) 179 continue; 180 181 LFS_IENTRY(ifp, fs, ino, bp); 182 if (ifp->if_daddr) { 183 brelse(bp); 184 continue; 185 } 186 pwarn("INO %llu FREE BUT NOT ON FREE LIST\n", 187 (unsigned long long)ino); 188 if (preen || reply("FIX") == 1) { 189 assert(ino != freehd); 190 ifp->if_nextfree = freehd; 191 VOP_BWRITE(bp); 192 193 freehd = ino; 194 sbdirty(); 195 196 /* If freelist was empty, this is the tail */ 197 if (plastino == 0) 198 plastino = ino; 199 } else 200 brelse(bp); 201 } 202 203 LFS_CLEANERINFO(cip, fs, cbp); 204 if (cip->free_head != freehd) { 205 /* They've already given us permission for this change */ 206 cip->free_head = freehd; 207 writeit = 1; 208 } 209 if (freehd != fs->lfs_freehd) { 210 pwarn("FREE LIST HEAD IN SUPERBLOCK SHOULD BE %d (WAS %d)\n", 211 (int)fs->lfs_freehd, (int)freehd); 212 if (preen || reply("FIX")) { 213 fs->lfs_freehd = freehd; 214 sbdirty(); 215 } 216 } 217 if (cip->free_tail != plastino) { 218 pwarn("FREE LIST TAIL SHOULD BE %llu (WAS %llu)\n", 219 (unsigned long long)plastino, 220 (unsigned long long)cip->free_tail); 221 if (preen || reply("FIX")) { 222 cip->free_tail = plastino; 223 writeit = 1; 224 } 225 } 226 227 if (writeit) 228 LFS_SYNC_CLEANERINFO(cip, fs, cbp, writeit); 229 else 230 brelse(cbp); 231 232 if (fs->lfs_freehd == 0) { 233 pwarn("%sree list head is 0x0\n", preen ? "f" : "F"); 234 if (preen || reply("FIX")) 235 extend_ifile(fs); 236 } 237 } 238
Indexes created Thu Sep 25 16:09:42 GMT 2025