pass1.c revision 1.18
1 /* $NetBSD: pass1.c,v 1.18 1997/09/16 08:37:06 mrg 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 #if 0 39 static char sccsid[] = "@(#)pass1.c 8.1 (Berkeley) 6/5/93"; 40 #else 41 __RCSID("$NetBSD: pass1.c,v 1.18 1997/09/16 08:37:06 mrg Exp $"); 42 #endif 43 #endif /* not lint */ 44 45 #include <sys/param.h> 46 #include <sys/time.h> 47 #include <ufs/ufs/dinode.h> 48 #include <ufs/ufs/dir.h> 49 #include <ufs/ffs/fs.h> 50 51 #include <stdio.h> 52 #include <stdlib.h> 53 #include <string.h> 54 55 #include "fsck.h" 56 #include "extern.h" 57 #include "fsutil.h" 58 59 static daddr_t badblk; 60 static daddr_t dupblk; 61 static void checkinode __P((ino_t, struct inodesc *)); 62 63 void 64 pass1() 65 { 66 ino_t inumber; 67 int c, i, cgd; 68 struct inodesc idesc; 69 70 /* 71 * Set file system reserved blocks in used block map. 72 */ 73 for (c = 0; c < sblock.fs_ncg; c++) { 74 cgd = cgdmin(&sblock, c); 75 if (c == 0) 76 i = cgbase(&sblock, c); 77 else 78 i = cgsblock(&sblock, c); 79 for (; i < cgd; i++) 80 setbmap(i); 81 } 82 i = sblock.fs_csaddr; 83 cgd = i + howmany(sblock.fs_cssize, sblock.fs_fsize); 84 for (; i < cgd; i++) 85 setbmap(i); 86 /* 87 * Find all allocated blocks. 88 */ 89 memset(&idesc, 0, sizeof(struct inodesc)); 90 idesc.id_type = ADDR; 91 idesc.id_func = pass1check; 92 inumber = 0; 93 n_files = n_blks = 0; 94 resetinodebuf(); 95 for (c = 0; c < sblock.fs_ncg; c++) { 96 for (i = 0; i < sblock.fs_ipg; i++, inumber++) { 97 if (inumber < ROOTINO) 98 continue; 99 checkinode(inumber, &idesc); 100 } 101 } 102 freeinodebuf(); 103 } 104 105 static void 106 checkinode(inumber, idesc) 107 ino_t inumber; 108 struct inodesc *idesc; 109 { 110 struct dinode *dp; 111 struct zlncnt *zlnp; 112 int ndb, j; 113 mode_t mode; 114 char *symbuf; 115 116 dp = getnextinode(inumber); 117 mode = dp->di_mode & IFMT; 118 if (mode == 0) { 119 if (memcmp(dp->di_db, zino.di_db, NDADDR * sizeof(daddr_t)) || 120 memcmp(dp->di_ib, zino.di_ib, NIADDR * sizeof(daddr_t)) || 121 dp->di_mode || dp->di_size) { 122 pfatal("PARTIALLY ALLOCATED INODE I=%u", inumber); 123 if (reply("CLEAR") == 1) { 124 dp = ginode(inumber); 125 clearinode(dp); 126 inodirty(); 127 } 128 } 129 statemap[inumber] = USTATE; 130 return; 131 } 132 lastino = inumber; 133 if (/* dp->di_size < 0 || */ 134 dp->di_size + sblock.fs_bsize - 1 < dp->di_size) { 135 if (debug) 136 printf("bad size %qu:",(unsigned long long)dp->di_size); 137 goto unknown; 138 } 139 if (!preen && mode == IFMT && reply("HOLD BAD BLOCK") == 1) { 140 dp = ginode(inumber); 141 dp->di_size = sblock.fs_fsize; 142 dp->di_mode = IFREG|0600; 143 inodirty(); 144 } 145 ndb = howmany(dp->di_size, sblock.fs_bsize); 146 if (ndb < 0) { 147 if (debug) 148 printf("bad size %qu ndb %d:", 149 (unsigned long long)dp->di_size, ndb); 150 goto unknown; 151 } 152 if (mode == IFBLK || mode == IFCHR) 153 ndb++; 154 if (mode == IFLNK) { 155 /* 156 * Note that the old fastlink format always had di_blocks set 157 * to 0. Other than that we no longer use the `spare' field 158 * (which is now the extended uid) for sanity checking, the 159 * new format is the same as the old. We simply ignore the 160 * conversion altogether. - mycroft, 19MAY1994 161 */ 162 if (doinglevel2 && 163 dp->di_size > 0 && dp->di_size < MAXSYMLINKLEN && 164 dp->di_blocks != 0) { 165 symbuf = alloca(secsize); 166 if (bread(fsreadfd, symbuf, 167 fsbtodb(&sblock, dp->di_db[0]), 168 (long)secsize) != 0) 169 errexit("cannot read symlink"); 170 if (debug) { 171 symbuf[dp->di_size] = 0; 172 printf("convert symlink %u(%s) of size %qd\n", 173 inumber, symbuf, 174 (unsigned long long)dp->di_size); 175 } 176 dp = ginode(inumber); 177 memcpy(dp->di_shortlink, symbuf, (long)dp->di_size); 178 dp->di_blocks = 0; 179 inodirty(); 180 } 181 /* 182 * Fake ndb value so direct/indirect block checks below 183 * will detect any garbage after symlink string. 184 */ 185 if (dp->di_size < sblock.fs_maxsymlinklen || 186 (sblock.fs_maxsymlinklen == 0 && dp->di_blocks == 0)) { 187 ndb = howmany(dp->di_size, sizeof(daddr_t)); 188 if (ndb > NDADDR) { 189 j = ndb - NDADDR; 190 for (ndb = 1; j > 1; j--) 191 ndb *= NINDIR(&sblock); 192 ndb += NDADDR; 193 } 194 } 195 } 196 for (j = ndb; j < NDADDR; j++) 197 if (dp->di_db[j] != 0) { 198 if (debug) 199 printf("bad direct addr: %d\n", dp->di_db[j]); 200 goto unknown; 201 } 202 for (j = 0, ndb -= NDADDR; ndb > 0; j++) 203 ndb /= NINDIR(&sblock); 204 for (; j < NIADDR; j++) 205 if (dp->di_ib[j] != 0) { 206 if (debug) 207 printf("bad indirect addr: %d\n", 208 dp->di_ib[j]); 209 goto unknown; 210 } 211 if (ftypeok(dp) == 0) 212 goto unknown; 213 n_files++; 214 lncntp[inumber] = dp->di_nlink; 215 if (dp->di_nlink <= 0) { 216 zlnp = (struct zlncnt *)malloc(sizeof *zlnp); 217 if (zlnp == NULL) { 218 pfatal("LINK COUNT TABLE OVERFLOW"); 219 if (reply("CONTINUE") == 0) 220 errexit("%s", ""); 221 } else { 222 zlnp->zlncnt = inumber; 223 zlnp->next = zlnhead; 224 zlnhead = zlnp; 225 } 226 } 227 if (mode == IFDIR) { 228 if (dp->di_size == 0) 229 statemap[inumber] = DCLEAR; 230 else 231 statemap[inumber] = DSTATE; 232 cacheino(dp, inumber); 233 } else 234 statemap[inumber] = FSTATE; 235 typemap[inumber] = IFTODT(mode); 236 if (doinglevel2 && 237 (dp->di_ouid != (u_short)-1 || dp->di_ogid != (u_short)-1)) { 238 dp = ginode(inumber); 239 dp->di_uid = dp->di_ouid; 240 dp->di_ouid = -1; 241 dp->di_gid = dp->di_ogid; 242 dp->di_ogid = -1; 243 inodirty(); 244 } 245 badblk = dupblk = 0; 246 idesc->id_number = inumber; 247 (void)ckinode(dp, idesc); 248 idesc->id_entryno *= btodb(sblock.fs_fsize); 249 if (dp->di_blocks != idesc->id_entryno) { 250 pwarn("INCORRECT BLOCK COUNT I=%u (%d should be %d)", 251 inumber, dp->di_blocks, idesc->id_entryno); 252 if (preen) 253 printf(" (CORRECTED)\n"); 254 else if (reply("CORRECT") == 0) 255 return; 256 dp = ginode(inumber); 257 dp->di_blocks = idesc->id_entryno; 258 inodirty(); 259 } 260 return; 261 unknown: 262 pfatal("UNKNOWN FILE TYPE I=%u", inumber); 263 statemap[inumber] = FCLEAR; 264 if (reply("CLEAR") == 1) { 265 statemap[inumber] = USTATE; 266 dp = ginode(inumber); 267 clearinode(dp); 268 inodirty(); 269 } 270 } 271 272 int 273 pass1check(idesc) 274 struct inodesc *idesc; 275 { 276 int res = KEEPON; 277 int anyout, nfrags; 278 daddr_t blkno = idesc->id_blkno; 279 struct dups *dlp; 280 struct dups *new; 281 282 if ((anyout = chkrange(blkno, idesc->id_numfrags)) != 0) { 283 blkerror(idesc->id_number, "BAD", blkno); 284 if (badblk++ >= MAXBAD) { 285 pwarn("EXCESSIVE BAD BLKS I=%u", 286 idesc->id_number); 287 if (preen) 288 printf(" (SKIPPING)\n"); 289 else if (reply("CONTINUE") == 0) 290 errexit("%s", ""); 291 return (STOP); 292 } 293 } 294 for (nfrags = idesc->id_numfrags; nfrags > 0; blkno++, nfrags--) { 295 if (anyout && chkrange(blkno, 1)) { 296 res = SKIP; 297 } else if (!testbmap(blkno)) { 298 n_blks++; 299 setbmap(blkno); 300 } else { 301 blkerror(idesc->id_number, "DUP", blkno); 302 if (dupblk++ >= MAXDUP) { 303 pwarn("EXCESSIVE DUP BLKS I=%u", 304 idesc->id_number); 305 if (preen) 306 printf(" (SKIPPING)\n"); 307 else if (reply("CONTINUE") == 0) 308 errexit("%s", ""); 309 return (STOP); 310 } 311 new = (struct dups *)malloc(sizeof(struct dups)); 312 if (new == NULL) { 313 pfatal("DUP TABLE OVERFLOW."); 314 if (reply("CONTINUE") == 0) 315 errexit("%s", ""); 316 return (STOP); 317 } 318 new->dup = blkno; 319 if (muldup == 0) { 320 duplist = muldup = new; 321 new->next = 0; 322 } else { 323 new->next = muldup->next; 324 muldup->next = new; 325 } 326 for (dlp = duplist; dlp != muldup; dlp = dlp->next) 327 if (dlp->dup == blkno) 328 break; 329 if (dlp == muldup && dlp->dup != blkno) 330 muldup = new; 331 } 332 /* 333 * count the number of blocks found in id_entryno 334 */ 335 idesc->id_entryno++; 336 } 337 return (res); 338 } 339
Indexes created Thu Oct 23 22:10:10 GMT 2025