pass1.c revision 1.9
1 /* 2 * Copyright (c) 1980, 1986, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 /*static char sccsid[] = "from: @(#)pass1.c 8.1 (Berkeley) 6/5/93";*/ 36 static char *rcsid = "$Id: pass1.c,v 1.9 1994/06/29 11:01:35 ws Exp $"; 37 #endif /* not lint */ 38 39 #include <sys/param.h> 40 #include <sys/time.h> 41 #include <ufs/ufs/dinode.h> 42 #include <ufs/ufs/dir.h> 43 #include <ufs/ffs/fs.h> 44 #include <stdlib.h> 45 #include <string.h> 46 #include "fsck.h" 47 48 static daddr_t badblk; 49 static daddr_t dupblk; 50 int pass1check(); 51 struct dinode *getnextinode(); 52 53 pass1() 54 { 55 ino_t inumber; 56 int c, i, cgd; 57 struct inodesc idesc; 58 59 /* 60 * Set file system reserved blocks in used block map. 61 */ 62 for (c = 0; c < sblock.fs_ncg; c++) { 63 cgd = cgdmin(&sblock, c); 64 if (c == 0) { 65 i = cgbase(&sblock, c); 66 cgd += howmany(sblock.fs_cssize, sblock.fs_fsize); 67 } else 68 i = cgsblock(&sblock, c); 69 for (; i < cgd; i++) 70 setbmap(i); 71 } 72 /* 73 * Find all allocated blocks. 74 */ 75 bzero((char *)&idesc, sizeof(struct inodesc)); 76 idesc.id_type = ADDR; 77 idesc.id_func = pass1check; 78 inumber = 0; 79 n_files = n_blks = 0; 80 resetinodebuf(); 81 for (c = 0; c < sblock.fs_ncg; c++) { 82 for (i = 0; i < sblock.fs_ipg; i++, inumber++) { 83 if (inumber < ROOTINO) 84 continue; 85 checkinode(inumber, &idesc); 86 } 87 } 88 freeinodebuf(); 89 } 90 91 checkinode(inumber, idesc) 92 ino_t inumber; 93 register struct inodesc *idesc; 94 { 95 register struct dinode *dp; 96 struct zlncnt *zlnp; 97 int ndb, j; 98 mode_t mode; 99 char *symbuf; 100 101 dp = getnextinode(inumber); 102 mode = dp->di_mode & IFMT; 103 if (mode == 0) { 104 if (bcmp((char *)dp->di_db, (char *)zino.di_db, 105 NDADDR * sizeof(daddr_t)) || 106 bcmp((char *)dp->di_ib, (char *)zino.di_ib, 107 NIADDR * sizeof(daddr_t)) || 108 dp->di_mode || dp->di_size) { 109 pfatal("PARTIALLY ALLOCATED INODE I=%lu", inumber); 110 if (reply("CLEAR") == 1) { 111 dp = ginode(inumber); 112 clearinode(dp); 113 inodirty(); 114 } 115 } 116 statemap[inumber] = USTATE; 117 return; 118 } 119 lastino = inumber; 120 if (/* dp->di_size < 0 || */ 121 dp->di_size + sblock.fs_bsize - 1 < dp->di_size) { 122 if (debug) 123 printf("bad size %qu:", dp->di_size); 124 goto unknown; 125 } 126 if (!preen && mode == IFMT && reply("HOLD BAD BLOCK") == 1) { 127 dp = ginode(inumber); 128 dp->di_size = sblock.fs_fsize; 129 dp->di_mode = IFREG|0600; 130 inodirty(); 131 } 132 ndb = howmany(dp->di_size, sblock.fs_bsize); 133 if (ndb < 0) { 134 if (debug) 135 printf("bad size %qu ndb %d:", 136 dp->di_size, ndb); 137 goto unknown; 138 } 139 if (mode == IFBLK || mode == IFCHR) 140 ndb++; 141 if (mode == IFLNK) { 142 /* 143 * Note that the old fastlink format always had di_blocks set 144 * to 0. Other than that we no longer use the `spare' field 145 * (which is now the extended uid) for sanity checking, the 146 * new format is the same as the old. We simply ignore the 147 * conversion altogether. - mycroft, 19MAY1994 148 */ 149 if (doinglevel2 && 150 dp->di_size > 0 && dp->di_size < MAXSYMLINKLEN && 151 dp->di_blocks != 0) { 152 symbuf = alloca(secsize); 153 if (bread(fsreadfd, symbuf, 154 fsbtodb(&sblock, dp->di_db[0]), 155 (long)secsize) != 0) 156 errexit("cannot read symlink"); 157 if (debug) { 158 symbuf[dp->di_size] = 0; 159 printf("convert symlink %d(%s) of size %d\n", 160 inumber, symbuf, (long)dp->di_size); 161 } 162 dp = ginode(inumber); 163 bcopy(symbuf, (caddr_t)dp->di_shortlink, 164 (long)dp->di_size); 165 dp->di_blocks = 0; 166 inodirty(); 167 } 168 /* 169 * Fake ndb value so direct/indirect block checks below 170 * will detect any garbage after symlink string. 171 */ 172 if (dp->di_size < sblock.fs_maxsymlinklen || 173 (sblock.fs_maxsymlinklen == 0 && dp->di_blocks == 0)) { 174 ndb = howmany(dp->di_size, sizeof(daddr_t)); 175 if (ndb > NDADDR) { 176 j = ndb - NDADDR; 177 for (ndb = 1; j > 1; j--) 178 ndb *= NINDIR(&sblock); 179 ndb += NDADDR; 180 } 181 } 182 } 183 for (j = ndb; j < NDADDR; j++) 184 if (dp->di_db[j] != 0) { 185 if (debug) 186 printf("bad direct addr: %ld\n", dp->di_db[j]); 187 goto unknown; 188 } 189 for (j = 0, ndb -= NDADDR; ndb > 0; j++) 190 ndb /= NINDIR(&sblock); 191 for (; j < NIADDR; j++) 192 if (dp->di_ib[j] != 0) { 193 if (debug) 194 printf("bad indirect addr: %ld\n", 195 dp->di_ib[j]); 196 goto unknown; 197 } 198 if (ftypeok(dp) == 0) 199 goto unknown; 200 n_files++; 201 lncntp[inumber] = dp->di_nlink; 202 if (dp->di_nlink <= 0) { 203 zlnp = (struct zlncnt *)malloc(sizeof *zlnp); 204 if (zlnp == NULL) { 205 pfatal("LINK COUNT TABLE OVERFLOW"); 206 if (reply("CONTINUE") == 0) 207 errexit(""); 208 } else { 209 zlnp->zlncnt = inumber; 210 zlnp->next = zlnhead; 211 zlnhead = zlnp; 212 } 213 } 214 if (mode == IFDIR) { 215 if (dp->di_size == 0) 216 statemap[inumber] = DCLEAR; 217 else 218 statemap[inumber] = DSTATE; 219 cacheino(dp, inumber); 220 } else 221 statemap[inumber] = FSTATE; 222 typemap[inumber] = IFTODT(mode); 223 if (doinglevel2 && 224 (dp->di_ouid != (u_short)-1 || dp->di_ogid != (u_short)-1)) { 225 dp = ginode(inumber); 226 dp->di_uid = dp->di_ouid; 227 dp->di_ouid = -1; 228 dp->di_gid = dp->di_ogid; 229 dp->di_ogid = -1; 230 inodirty(); 231 } 232 badblk = dupblk = 0; 233 idesc->id_number = inumber; 234 (void)ckinode(dp, idesc); 235 idesc->id_entryno *= btodb(sblock.fs_fsize); 236 if (dp->di_blocks != idesc->id_entryno) { 237 pwarn("INCORRECT BLOCK COUNT I=%lu (%ld should be %ld)", 238 inumber, dp->di_blocks, idesc->id_entryno); 239 if (preen) 240 printf(" (CORRECTED)\n"); 241 else if (reply("CORRECT") == 0) 242 return; 243 dp = ginode(inumber); 244 dp->di_blocks = idesc->id_entryno; 245 inodirty(); 246 } 247 return; 248 unknown: 249 pfatal("UNKNOWN FILE TYPE I=%lu", inumber); 250 statemap[inumber] = FCLEAR; 251 if (reply("CLEAR") == 1) { 252 statemap[inumber] = USTATE; 253 dp = ginode(inumber); 254 clearinode(dp); 255 inodirty(); 256 } 257 } 258 259 pass1check(idesc) 260 register struct inodesc *idesc; 261 { 262 int res = KEEPON; 263 int anyout, nfrags; 264 daddr_t blkno = idesc->id_blkno; 265 register struct dups *dlp; 266 struct dups *new; 267 268 if ((anyout = chkrange(blkno, idesc->id_numfrags)) != 0) { 269 blkerror(idesc->id_number, "BAD", blkno); 270 if (badblk++ >= MAXBAD) { 271 pwarn("EXCESSIVE BAD BLKS I=%lu", 272 idesc->id_number); 273 if (preen) 274 printf(" (SKIPPING)\n"); 275 else if (reply("CONTINUE") == 0) 276 errexit(""); 277 return (STOP); 278 } 279 } 280 for (nfrags = idesc->id_numfrags; nfrags > 0; blkno++, nfrags--) { 281 if (anyout && chkrange(blkno, 1)) { 282 res = SKIP; 283 } else if (!testbmap(blkno)) { 284 n_blks++; 285 setbmap(blkno); 286 } else { 287 blkerror(idesc->id_number, "DUP", blkno); 288 if (dupblk++ >= MAXDUP) { 289 pwarn("EXCESSIVE DUP BLKS I=%lu", 290 idesc->id_number); 291 if (preen) 292 printf(" (SKIPPING)\n"); 293 else if (reply("CONTINUE") == 0) 294 errexit(""); 295 return (STOP); 296 } 297 new = (struct dups *)malloc(sizeof(struct dups)); 298 if (new == NULL) { 299 pfatal("DUP TABLE OVERFLOW."); 300 if (reply("CONTINUE") == 0) 301 errexit(""); 302 return (STOP); 303 } 304 new->dup = blkno; 305 if (muldup == 0) { 306 duplist = muldup = new; 307 new->next = 0; 308 } else { 309 new->next = muldup->next; 310 muldup->next = new; 311 } 312 for (dlp = duplist; dlp != muldup; dlp = dlp->next) 313 if (dlp->dup == blkno) 314 break; 315 if (dlp == muldup && dlp->dup != blkno) 316 muldup = new; 317 } 318 /* 319 * count the number of blocks found in id_entryno 320 */ 321 idesc->id_entryno++; 322 } 323 return (res); 324 } 325
Indexes created Fri Sep 26 20:09:58 GMT 2025