pass1.c revision 1.16
1 /* $NetBSD: pass1.c,v 1.16 2007/11/16 16:55:04 tsutsui 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 /* 33 * Copyright (c) 1997 Manuel Bouyer. 34 * 35 * Redistribution and use in source and binary forms, with or without 36 * modification, are permitted provided that the following conditions 37 * are met: 38 * 1. Redistributions of source code must retain the above copyright 39 * notice, this list of conditions and the following disclaimer. 40 * 2. Redistributions in binary form must reproduce the above copyright 41 * notice, this list of conditions and the following disclaimer in the 42 * documentation and/or other materials provided with the distribution. 43 * 3. All advertising materials mentioning features or use of this software 44 * must display the following acknowledgement: 45 * This product includes software developed by Manuel Bouyer. 46 * 4. The name of the author may not be used to endorse or promote products 47 * derived from this software without specific prior written permission. 48 * 49 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 50 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 51 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 52 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 53 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 54 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 55 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 56 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 57 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 58 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 59 */ 60 61 #include <sys/cdefs.h> 62 #ifndef lint 63 #if 0 64 static char sccsid[] = "@(#)pass1.c 8.1 (Berkeley) 6/5/93"; 65 #else 66 __RCSID("$NetBSD: pass1.c,v 1.16 2007/11/16 16:55:04 tsutsui Exp $"); 67 #endif 68 #endif /* not lint */ 69 70 #include <sys/param.h> 71 #include <sys/time.h> 72 #include <ufs/ext2fs/ext2fs_dinode.h> 73 #include <ufs/ext2fs/ext2fs_dir.h> 74 #include <ufs/ext2fs/ext2fs.h> 75 76 #include <ufs/ufs/dinode.h> /* for IFMT & friends */ 77 78 #include <stdio.h> 79 #include <stdlib.h> 80 #include <string.h> 81 #include <time.h> 82 83 #include "fsck.h" 84 #include "extern.h" 85 #include "fsutil.h" 86 87 static daddr_t badblk; 88 static daddr_t dupblk; 89 static void checkinode(ino_t, struct inodesc *); 90 91 void 92 pass1(void) 93 { 94 ino_t inumber; 95 int c, i; 96 daddr_t dbase; 97 struct inodesc idesc; 98 99 /* 100 * Set file system reserved blocks in used block map. 101 */ 102 for (c = 0; c < sblock.e2fs_ncg; c++) { 103 dbase = c * sblock.e2fs.e2fs_bpg + 104 sblock.e2fs.e2fs_first_dblock; 105 /* Mark the blocks used for the inode table */ 106 if (fs2h32(sblock.e2fs_gd[c].ext2bgd_i_tables) >= dbase) { 107 for (i = 0; i < sblock.e2fs_itpg; i++) 108 setbmap( 109 fs2h32(sblock.e2fs_gd[c].ext2bgd_i_tables) 110 + i); 111 } 112 /* Mark the blocks used for the block bitmap */ 113 if (fs2h32(sblock.e2fs_gd[c].ext2bgd_b_bitmap) >= dbase) 114 setbmap(fs2h32(sblock.e2fs_gd[c].ext2bgd_b_bitmap)); 115 /* Mark the blocks used for the inode bitmap */ 116 if (fs2h32(sblock.e2fs_gd[c].ext2bgd_i_bitmap) >= dbase) 117 setbmap(fs2h32(sblock.e2fs_gd[c].ext2bgd_i_bitmap)); 118 119 if (sblock.e2fs.e2fs_rev == E2FS_REV0 || 120 (sblock.e2fs.e2fs_features_rocompat & 121 EXT2F_ROCOMPAT_SPARSESUPER) == 0 || 122 cg_has_sb(c)) { 123 /* Mark copuy of SB and descriptors */ 124 setbmap(dbase); 125 for (i = 1; i <= sblock.e2fs_ngdb; i++) 126 setbmap(dbase+i); 127 } 128 129 130 if (c == 0) { 131 for(i = 0; i < dbase; i++) 132 setbmap(i); 133 } 134 } 135 136 /* 137 * Find all allocated blocks. 138 */ 139 memset(&idesc, 0, sizeof(struct inodesc)); 140 idesc.id_type = ADDR; 141 idesc.id_func = pass1check; 142 inumber = 1; 143 n_files = n_blks = 0; 144 resetinodebuf(); 145 for (c = 0; c < sblock.e2fs_ncg; c++) { 146 for (i = 0; 147 i < sblock.e2fs.e2fs_ipg && inumber <= sblock.e2fs.e2fs_icount; 148 i++, inumber++) { 149 if (inumber < EXT2_ROOTINO) /* XXX */ 150 continue; 151 checkinode(inumber, &idesc); 152 } 153 } 154 freeinodebuf(); 155 } 156 157 static void 158 checkinode(ino_t inumber, struct inodesc *idesc) 159 { 160 struct ext2fs_dinode *dp; 161 struct zlncnt *zlnp; 162 int ndb, j; 163 mode_t mode; 164 165 dp = getnextinode(inumber); 166 if (inumber < EXT2_FIRSTINO && 167 inumber != EXT2_ROOTINO && 168 !(inumber == EXT2_RESIZEINO && 169 (sblock.e2fs.e2fs_features_compat & EXT2F_COMPAT_RESIZE) != 0)) 170 return; 171 172 mode = fs2h16(dp->e2di_mode) & IFMT; 173 if (mode == 0 || (dp->e2di_dtime != 0 && dp->e2di_nlink == 0)) { 174 if (mode == 0 && ( 175 memcmp(dp->e2di_blocks, zino.e2di_blocks, 176 (NDADDR + NIADDR) * sizeof(u_int32_t)) || 177 dp->e2di_mode || inosize(dp))) { 178 pfatal("PARTIALLY ALLOCATED INODE I=%llu", 179 (unsigned long long)inumber); 180 if (reply("CLEAR") == 1) { 181 dp = ginode(inumber); 182 clearinode(dp); 183 inodirty(); 184 } 185 } 186 #ifdef notyet /* it seems that dtime == 0 is valid for a unallocated inode */ 187 if (dp->e2di_dtime == 0) { 188 pwarn("DELETED INODE I=%llu HAS A NULL DTIME", 189 (unsigned long long)inumber); 190 if (preen) { 191 printf(" (CORRECTED)\n"); 192 } 193 if (preen || reply("CORRECT")) { 194 time_t t; 195 time(&t); 196 dp->e2di_dtime = h2fs32(t); 197 dp = ginode(inumber); 198 inodirty(); 199 } 200 } 201 #endif 202 statemap[inumber] = USTATE; 203 return; 204 } 205 lastino = inumber; 206 if (dp->e2di_dtime != 0) { 207 time_t t = fs2h32(dp->e2di_dtime); 208 char *p = ctime(&t); 209 pwarn("INODE I=%llu HAS DTIME=%12.12s %4.4s", 210 (unsigned long long)inumber, &p[4], &p[20]); 211 if (preen) { 212 printf(" (CORRECTED)\n"); 213 } 214 if (preen || reply("CORRECT")) { 215 dp = ginode(inumber); 216 dp->e2di_dtime = 0; 217 inodirty(); 218 } 219 } 220 if (inosize(dp) + sblock.e2fs_bsize - 1 < inosize(dp)) { 221 if (debug) 222 printf("bad size %llu:", (unsigned long long)inosize(dp)); 223 goto unknown; 224 } 225 if (!preen && mode == IFMT && reply("HOLD BAD BLOCK") == 1) { 226 dp = ginode(inumber); 227 dp->e2di_mode = h2fs16(IFREG|0600); 228 inossize(dp, sblock.e2fs_bsize); 229 inodirty(); 230 } 231 ndb = howmany(inosize(dp), sblock.e2fs_bsize); 232 if (ndb < 0) { 233 if (debug) 234 printf("bad size %llu ndb %d:", 235 (unsigned long long)inosize(dp), ndb); 236 goto unknown; 237 } 238 if (mode == IFBLK || mode == IFCHR) 239 ndb++; 240 if (mode == IFLNK) { 241 /* 242 * Fake ndb value so direct/indirect block checks below 243 * will detect any garbage after symlink string. 244 */ 245 if (inosize(dp) < EXT2_MAXSYMLINKLEN || 246 (EXT2_MAXSYMLINKLEN == 0 && dp->e2di_blocks == 0)) { 247 ndb = howmany(inosize(dp), sizeof(u_int32_t)); 248 if (ndb > NDADDR) { 249 j = ndb - NDADDR; 250 for (ndb = 1; j > 1; j--) 251 ndb *= NINDIR(&sblock); 252 ndb += NDADDR; 253 } 254 } 255 } 256 /* Linux puts things in blocks for FIFO, so skip this check */ 257 if (mode != IFIFO) { 258 for (j = ndb; j < NDADDR; j++) 259 if (dp->e2di_blocks[j] != 0) { 260 if (debug) 261 printf("bad direct addr: %d\n", 262 fs2h32(dp->e2di_blocks[j])); 263 goto unknown; 264 } 265 for (j = 0, ndb -= NDADDR; ndb > 0; j++) 266 ndb /= NINDIR(&sblock); 267 for (; j < NIADDR; j++) { 268 if (dp->e2di_blocks[j+NDADDR] != 0) { 269 if (debug) 270 printf("bad indirect addr: %d\n", 271 fs2h32(dp->e2di_blocks[j+NDADDR])); 272 goto unknown; 273 } 274 } 275 } 276 if (ftypeok(dp) == 0) 277 goto unknown; 278 if (inumber >= EXT2_FIRSTINO || inumber == EXT2_ROOTINO) { 279 /* Don't count reserved inodes except root */ 280 n_files++; 281 } 282 lncntp[inumber] = fs2h16(dp->e2di_nlink); 283 if (dp->e2di_nlink == 0) { 284 zlnp = (struct zlncnt *)malloc(sizeof *zlnp); 285 if (zlnp == NULL) { 286 pfatal("LINK COUNT TABLE OVERFLOW"); 287 if (reply("CONTINUE") == 0) 288 errexit("%s\n", ""); 289 } else { 290 zlnp->zlncnt = inumber; 291 zlnp->next = zlnhead; 292 zlnhead = zlnp; 293 } 294 } 295 if (mode == IFDIR) { 296 if (inosize(dp) == 0) 297 statemap[inumber] = DCLEAR; 298 else 299 statemap[inumber] = DSTATE; 300 cacheino(dp, inumber); 301 } else { 302 statemap[inumber] = FSTATE; 303 } 304 typemap[inumber] = E2IFTODT(mode); 305 badblk = dupblk = 0; 306 idesc->id_number = inumber; 307 (void)ckinode(dp, idesc); 308 idesc->id_entryno *= btodb(sblock.e2fs_bsize); 309 if (fs2h32(dp->e2di_nblock) != idesc->id_entryno) { 310 pwarn("INCORRECT BLOCK COUNT I=%llu (%d should be %d)", 311 (unsigned long long)inumber, fs2h32(dp->e2di_nblock), 312 idesc->id_entryno); 313 if (preen) 314 printf(" (CORRECTED)\n"); 315 else if (reply("CORRECT") == 0) 316 return; 317 dp = ginode(inumber); 318 dp->e2di_nblock = h2fs32(idesc->id_entryno); 319 inodirty(); 320 } 321 return; 322 unknown: 323 pfatal("UNKNOWN FILE TYPE I=%llu", (unsigned long long)inumber); 324 statemap[inumber] = FCLEAR; 325 if (reply("CLEAR") == 1) { 326 statemap[inumber] = USTATE; 327 dp = ginode(inumber); 328 clearinode(dp); 329 inodirty(); 330 } 331 } 332 333 int 334 pass1check(struct inodesc *idesc) 335 { 336 int res = KEEPON; 337 int anyout, nfrags; 338 daddr_t blkno = idesc->id_blkno; 339 struct dups *dlp; 340 struct dups *new; 341 342 if ((anyout = chkrange(blkno, idesc->id_numfrags)) != 0) { 343 blkerror(idesc->id_number, "BAD", blkno); 344 if (badblk++ >= MAXBAD) { 345 pwarn("EXCESSIVE BAD BLKS I=%llu", 346 (unsigned long long)idesc->id_number); 347 if (preen) 348 printf(" (SKIPPING)\n"); 349 else if (reply("CONTINUE") == 0) 350 errexit("%s\n", ""); 351 return (STOP); 352 } 353 } 354 for (nfrags = idesc->id_numfrags; nfrags > 0; blkno++, nfrags--) { 355 if (anyout && chkrange(blkno, 1)) { 356 res = SKIP; 357 } else if (!testbmap(blkno)) { 358 n_blks++; 359 setbmap(blkno); 360 } else { 361 blkerror(idesc->id_number, "DUP", blkno); 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 errexit("%s\n", ""); 369 return (STOP); 370 } 371 new = (struct dups *)malloc(sizeof(struct dups)); 372 if (new == NULL) { 373 pfatal("DUP TABLE OVERFLOW."); 374 if (reply("CONTINUE") == 0) 375 errexit("%s\n", ""); 376 return (STOP); 377 } 378 new->dup = blkno; 379 if (muldup == 0) { 380 duplist = muldup = new; 381 new->next = 0; 382 } else { 383 new->next = muldup->next; 384 muldup->next = new; 385 } 386 for (dlp = duplist; dlp != muldup; dlp = dlp->next) 387 if (dlp->dup == blkno) 388 break; 389 if (dlp == muldup && dlp->dup != blkno) 390 muldup = new; 391 } 392 /* 393 * count the number of blocks found in id_entryno 394 */ 395 idesc->id_entryno++; 396 } 397 return (res); 398 } 399
Indexes created Mon Sep 22 05:09:51 GMT 2025