1 /* $NetBSD: pass1.c,v 1.29 2007/10/08 21:39:49 ad 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 <sys/buf.h> 36 37 #include <ufs/ufs/inode.h> 38 #include <ufs/ufs/dir.h> 39 #define vnode uvnode 40 #include <ufs/lfs/lfs.h> 41 #undef vnode 42 43 #include <err.h> 44 #include <stdio.h> 45 #include <stdlib.h> 46 #include <string.h> 47 #include <signal.h> 48 #include <util.h> 49 50 #include "bufcache.h" 51 #include "vnode.h" 52 #include "lfs_user.h" 53 54 #include "fsck.h" 55 #include "extern.h" 56 #include "fsutil.h" 57 58 SEGUSE *seg_table; 59 extern ufs_daddr_t *din_table; 60 61 ufs_daddr_t badblk; 62 static ufs_daddr_t dupblk; 63 static int i_d_cmp(const void *, const void *); 64 65 struct ino_daddr { 66 ino_t ino; 67 ufs_daddr_t daddr; 68 }; 69 70 static int 71 i_d_cmp(const void *va, const void *vb) 72 { 73 const struct ino_daddr *a, *b; 74 75 a = *((const struct ino_daddr *const *) va); 76 b = *((const struct ino_daddr *const *) vb); 77 78 if (a->daddr == b->daddr) { 79 return (a->ino - b->ino); 80 } 81 if (a->daddr > b->daddr) { 82 return 1; 83 } 84 return -1; 85 } 86 87 void 88 pass1(void) 89 { 90 ino_t inumber; 91 int i; 92 struct inodesc idesc; 93 struct ufs1_dinode *tinode; 94 struct ifile *ifp; 95 struct ubuf *bp; 96 struct ino_daddr **dins; 97 98 /* 99 * Find all allocated blocks, initialize numdirs. 100 */ 101 memset(&idesc, 0, sizeof(struct inodesc)); 102 idesc.id_type = ADDR; 103 idesc.id_func = pass1check; 104 idesc.id_lblkno = 0; 105 inumber = 0; 106 n_files = n_blks = 0; 107 108 if (debug) 109 printf("creating sorted inode address table...\n"); 110 /* Sort by daddr */ 111 dins = ecalloc(maxino, sizeof(*dins)); 112 for (i = 0; i < maxino; i++) { 113 dins[i] = emalloc(sizeof(**dins)); 114 dins[i]->ino = i; 115 if (i == fs->lfs_ifile) 116 dins[i]->daddr = fs->lfs_idaddr; 117 else { 118 LFS_IENTRY(ifp, fs, i, bp); 119 dins[i]->daddr = ifp->if_daddr; 120 brelse(bp, 0); 121 } 122 } 123 qsort(dins, maxino, sizeof(*dins), i_d_cmp); 124 125 /* find a value for numdirs, fill in din_table */ 126 if (debug) 127 printf("counting dirs...\n"); 128 numdirs = 0; 129 for (i = 0; i < maxino; i++) { 130 inumber = dins[i]->ino; 131 if (inumber == 0 || dins[i]->daddr == 0) 132 continue; 133 tinode = ginode(inumber); 134 if (tinode && (tinode->di_mode & IFMT) == IFDIR) 135 numdirs++; 136 } 137 138 /* from setup.c */ 139 inplast = 0; 140 listmax = numdirs + 10; 141 inpsort = ecalloc(listmax, sizeof(struct inoinfo *)); 142 inphead = ecalloc(numdirs, sizeof(struct inoinfo *)); 143 if (debug) 144 printf("counting blocks...\n"); 145 146 for (i = 0; i < maxino; i++) { 147 inumber = dins[i]->ino; 148 if (inumber == 0 || dins[i]->daddr == 0) { 149 statemap[inumber] = USTATE; 150 continue; 151 } 152 if (dins[i]->daddr != LFS_UNUSED_DADDR) { 153 checkinode(inumber, &idesc); 154 } else { 155 statemap[inumber] = USTATE; 156 } 157 free(dins[i]); 158 } 159 free(dins); 160 } 161 162 void 163 checkinode(ino_t inumber, struct inodesc * idesc) 164 { 165 struct ufs1_dinode *dp; 166 struct uvnode *vp; 167 struct zlncnt *zlnp; 168 struct ubuf *bp; 169 IFILE *ifp; 170 int ndb, j; 171 mode_t mode; 172 173 vp = vget(fs, inumber); 174 if (vp) 175 dp = VTOD(vp); 176 else 177 dp = NULL; 178 179 if (dp == NULL) { 180 statemap[inumber] = USTATE; 181 return; 182 } 183 mode = dp->di_mode & IFMT; 184 185 /* XXX - LFS doesn't have this particular problem (?) */ 186 if (mode == 0) { 187 if (memcmp(dp->di_db, zino.di_db, NDADDR * sizeof(ufs_daddr_t)) || 188 memcmp(dp->di_ib, zino.di_ib, NIADDR * sizeof(ufs_daddr_t)) || 189 dp->di_mode || dp->di_size) { 190 pwarn("mode=o%o, ifmt=o%o\n", dp->di_mode, mode); 191 pfatal("PARTIALLY ALLOCATED INODE I=%llu", 192 (unsigned long long)inumber); 193 if (reply("CLEAR") == 1) { 194 vp = vget(fs, inumber); 195 clearinode(inumber); 196 vnode_destroy(vp); 197 } 198 } 199 statemap[inumber] = USTATE; 200 return; 201 } 202 lastino = inumber; 203 if (/* dp->di_size < 0 || */ 204 dp->di_size + fs->lfs_bsize - 1 < dp->di_size) { 205 if (debug) 206 printf("bad size %llu:", 207 (unsigned long long) dp->di_size); 208 goto unknown; 209 } 210 if (!preen && mode == IFMT && reply("HOLD BAD BLOCK") == 1) { 211 vp = vget(fs, inumber); 212 dp = VTOD(vp); 213 dp->di_size = fs->lfs_fsize; 214 dp->di_mode = IFREG | 0600; 215 inodirty(VTOI(vp)); 216 } 217 ndb = howmany(dp->di_size, fs->lfs_bsize); 218 if (ndb < 0) { 219 if (debug) 220 printf("bad size %llu ndb %d:", 221 (unsigned long long) dp->di_size, ndb); 222 goto unknown; 223 } 224 if (mode == IFBLK || mode == IFCHR) 225 ndb++; 226 if (mode == IFLNK) { 227 /* 228 * Fake ndb value so direct/indirect block checks below 229 * will detect any garbage after symlink string. 230 */ 231 if (dp->di_size < fs->lfs_maxsymlinklen || 232 (fs->lfs_maxsymlinklen == 0 && dp->di_blocks == 0)) { 233 ndb = howmany(dp->di_size, sizeof(ufs_daddr_t)); 234 if (ndb > NDADDR) { 235 j = ndb - NDADDR; 236 for (ndb = 1; j > 1; j--) 237 ndb *= NINDIR(fs); 238 ndb += NDADDR; 239 } 240 } 241 } 242 for (j = ndb; j < NDADDR; j++) 243 if (dp->di_db[j] != 0) { 244 if (debug) 245 printf("bad direct addr for size %lld lbn %d: 0x%x\n", 246 (long long)dp->di_size, j, (unsigned)dp->di_db[j]); 247 goto unknown; 248 } 249 for (j = 0, ndb -= NDADDR; ndb > 0; j++) 250 ndb /= NINDIR(fs); 251 for (; j < NIADDR; j++) 252 if (dp->di_ib[j] != 0) { 253 if (debug) 254 printf("bad indirect addr for size %lld # %d: 0x%x\n", 255 (long long)dp->di_size, j, (unsigned)dp->di_ib[j]); 256 goto unknown; 257 } 258 if (ftypeok(dp) == 0) 259 goto unknown; 260 n_files++; 261 lncntp[inumber] = dp->di_nlink; 262 if (dp->di_nlink <= 0) { 263 zlnp = emalloc(sizeof *zlnp); 264 zlnp->zlncnt = inumber; 265 zlnp->next = zlnhead; 266 zlnhead = zlnp; 267 } 268 if (mode == IFDIR) { 269 if (dp->di_size == 0) 270 statemap[inumber] = DCLEAR; 271 else 272 statemap[inumber] = DSTATE; 273 cacheino(dp, inumber); 274 } else 275 statemap[inumber] = FSTATE; 276 277 /* 278 * Check for an orphaned file. These happen when the cleaner has 279 * to rewrite blocks from a file whose directory operation (removal) 280 * is in progress. 281 */ 282 if (dp->di_nlink <= 0) { 283 LFS_IENTRY(ifp, fs, inumber, bp); 284 if (ifp->if_nextfree == LFS_ORPHAN_NEXTFREE) { 285 statemap[inumber] = (mode == IFDIR ? DCLEAR : FCLEAR); 286 /* Add this to our list of orphans */ 287 zlnp = emalloc(sizeof *zlnp); 288 zlnp->zlncnt = inumber; 289 zlnp->next = orphead; 290 orphead = zlnp; 291 } 292 brelse(bp, 0); 293 } 294 295 typemap[inumber] = IFTODT(mode); 296 badblk = dupblk = 0; 297 idesc->id_number = inumber; 298 (void) ckinode(VTOD(vp), idesc); 299 if (dp->di_blocks != idesc->id_entryno) { 300 pwarn("INCORRECT BLOCK COUNT I=%llu (%d SHOULD BE %d)", 301 (unsigned long long)inumber, dp->di_blocks, 302 idesc->id_entryno); 303 if (preen) 304 printf(" (CORRECTED)\n"); 305 else if (reply("CORRECT") == 0) 306 return; 307 VTOI(vp)->i_ffs1_blocks = idesc->id_entryno; 308 inodirty(VTOI(vp)); 309 } 310 return; 311 unknown: 312 pfatal("UNKNOWN FILE TYPE I=%llu", (unsigned long long)inumber); 313 statemap[inumber] = FCLEAR; 314 if (reply("CLEAR") == 1) { 315 statemap[inumber] = USTATE; 316 vp = vget(fs, inumber); 317 clearinode(inumber); 318 vnode_destroy(vp); 319 } 320 } 321 322 int 323 pass1check(struct inodesc *idesc) 324 { 325 int res = KEEPON; 326 int anyout, ndblks; 327 daddr_t blkno = idesc->id_blkno; 328 struct dups *dlp; 329 struct dups *new; 330 331 if ((anyout = chkrange(blkno, fragstofsb(fs, idesc->id_numfrags))) != 0) { 332 blkerror(idesc->id_number, "BAD", blkno); 333 if (badblk++ >= MAXBAD) { 334 pwarn("EXCESSIVE BAD BLKS I=%llu", 335 (unsigned long long)idesc->id_number); 336 if (preen) 337 printf(" (SKIPPING)\n"); 338 else if (reply("CONTINUE") == 0) 339 err(EEXIT, "%s", ""); 340 return (STOP); 341 } 342 } else if (!testbmap(blkno)) { 343 seg_table[dtosn(fs, blkno)].su_nbytes += idesc->id_numfrags * fs->lfs_fsize; 344 } 345 for (ndblks = fragstofsb(fs, idesc->id_numfrags); ndblks > 0; blkno++, ndblks--) { 346 if (anyout && chkrange(blkno, 1)) { 347 res = SKIP; 348 } else if (!testbmap(blkno)) { 349 n_blks++; 350 #ifndef VERBOSE_BLOCKMAP 351 setbmap(blkno); 352 #else 353 setbmap(blkno, idesc->id_number); 354 #endif 355 } else { 356 blkerror(idesc->id_number, "DUP", blkno); 357 #ifdef VERBOSE_BLOCKMAP 358 pwarn("(lbn %lld: Holder is %lld)\n", 359 (long long)idesc->id_lblkno, 360 (long long)testbmap(blkno)); 361 #endif 362 if (dupblk++ >= MAXDUP) { 363 pwarn("EXCESSIVE DUP BLKS I=%llu", 364 (unsigned long long)idesc->id_number); 365 if (preen) 366 printf(" (SKIPPING)\n"); 367 else if (reply("CONTINUE") == 0) 368 err(EEXIT, "%s", ""); 369 return (STOP); 370 } 371 new = emalloc(sizeof(struct dups)); 372 new->dup = blkno; 373 if (muldup == 0) { 374 duplist = muldup = new; 375 new->next = 0; 376 } else { 377 new->next = muldup->next; 378 muldup->next = new; 379 } 380 for (dlp = duplist; dlp != muldup; dlp = dlp->next) 381 if (dlp->dup == blkno) 382 break; 383 if (dlp == muldup && dlp->dup != blkno) 384 muldup = new; 385 } 386 /* 387 * count the number of blocks found in id_entryno 388 */ 389 idesc->id_entryno++; 390 } 391 return (res); 392 } 393