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 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #if 0 31 #ifndef lint 32 static const char sccsid[] = "@(#)pass5.c 8.9 (Berkeley) 4/28/95"; 33 #endif /* not lint */ 34 #endif 35 #include <sys/cdefs.h> 36 __FBSDID("$FreeBSD$"); 37 38 #include <sys/param.h> 39 #include <sys/sysctl.h> 40 41 #include <ufs/ufs/dinode.h> 42 #include <ufs/ffs/fs.h> 43 44 #include <err.h> 45 #include <inttypes.h> 46 #include <limits.h> 47 #include <string.h> 48 #include <libufs.h> 49 50 #include "fsck.h" 51 52 static void check_maps(u_char *, u_char *, int, ufs2_daddr_t, const char *, 53 int *, int, int, int); 54 static void clear_blocks(ufs2_daddr_t start, ufs2_daddr_t end); 55 56 void 57 pass5(void) 58 { 59 int c, i, j, blk, frags, basesize, mapsize; 60 int inomapsize, blkmapsize; 61 struct fs *fs = &sblock; 62 ufs2_daddr_t d, dbase, dmax, start; 63 int rewritecg = 0; 64 struct csum *cs; 65 struct csum_total cstotal; 66 struct inodesc idesc[3]; 67 char buf[MAXBSIZE]; 68 struct cg *cg, *newcg = (struct cg *)buf; 69 struct bufarea *cgbp; 70 71 inoinfo(WINO)->ino_state = USTATE; 72 memset(newcg, 0, (size_t)fs->fs_cgsize); 73 newcg->cg_niblk = fs->fs_ipg; 74 if (cvtlevel >= 3) { 75 if (fs->fs_maxcontig < 2 && fs->fs_contigsumsize > 0) { 76 if (preen) 77 pwarn("DELETING CLUSTERING MAPS\n"); 78 if (preen || reply("DELETE CLUSTERING MAPS")) { 79 fs->fs_contigsumsize = 0; 80 rewritecg = 1; 81 sbdirty(); 82 } 83 } 84 if (fs->fs_maxcontig > 1) { 85 const char *doit = 0; 86 87 if (fs->fs_contigsumsize < 1) { 88 doit = "CREAT"; 89 } else if (fs->fs_contigsumsize < fs->fs_maxcontig && 90 fs->fs_contigsumsize < FS_MAXCONTIG) { 91 doit = "EXPAND"; 92 } 93 if (doit) { 94 i = fs->fs_contigsumsize; 95 fs->fs_contigsumsize = 96 MIN(fs->fs_maxcontig, FS_MAXCONTIG); 97 if (CGSIZE(fs) > (u_int)fs->fs_bsize) { 98 pwarn("CANNOT %s CLUSTER MAPS\n", doit); 99 fs->fs_contigsumsize = i; 100 } else if (preen || 101 reply("CREATE CLUSTER MAPS")) { 102 if (preen) 103 pwarn("%sING CLUSTER MAPS\n", 104 doit); 105 fs->fs_cgsize = 106 fragroundup(fs, CGSIZE(fs)); 107 rewritecg = 1; 108 sbdirty(); 109 } 110 } 111 } 112 } 113 basesize = &newcg->cg_space[0] - (u_char *)(&newcg->cg_firstfield); 114 if (sblock.fs_magic == FS_UFS2_MAGIC) { 115 newcg->cg_iusedoff = basesize; 116 } else { 117 /* 118 * We reserve the space for the old rotation summary 119 * tables for the benefit of old kernels, but do not 120 * maintain them in modern kernels. In time, they can 121 * go away. 122 */ 123 newcg->cg_old_btotoff = basesize; 124 newcg->cg_old_boff = newcg->cg_old_btotoff + 125 fs->fs_old_cpg * sizeof(int32_t); 126 newcg->cg_iusedoff = newcg->cg_old_boff + 127 fs->fs_old_cpg * fs->fs_old_nrpos * sizeof(u_int16_t); 128 memset(&newcg->cg_space[0], 0, newcg->cg_iusedoff - basesize); 129 } 130 inomapsize = howmany(fs->fs_ipg, CHAR_BIT); 131 newcg->cg_freeoff = newcg->cg_iusedoff + inomapsize; 132 blkmapsize = howmany(fs->fs_fpg, CHAR_BIT); 133 newcg->cg_nextfreeoff = newcg->cg_freeoff + blkmapsize; 134 if (fs->fs_contigsumsize > 0) { 135 newcg->cg_clustersumoff = newcg->cg_nextfreeoff - 136 sizeof(u_int32_t); 137 newcg->cg_clustersumoff = 138 roundup(newcg->cg_clustersumoff, sizeof(u_int32_t)); 139 newcg->cg_clusteroff = newcg->cg_clustersumoff + 140 (fs->fs_contigsumsize + 1) * sizeof(u_int32_t); 141 newcg->cg_nextfreeoff = newcg->cg_clusteroff + 142 howmany(fragstoblks(fs, fs->fs_fpg), CHAR_BIT); 143 } 144 newcg->cg_magic = CG_MAGIC; 145 mapsize = newcg->cg_nextfreeoff - newcg->cg_iusedoff; 146 memset(&idesc[0], 0, sizeof idesc); 147 for (i = 0; i < 3; i++) 148 idesc[i].id_type = ADDR; 149 memset(&cstotal, 0, sizeof(struct csum_total)); 150 dmax = blknum(fs, fs->fs_size + fs->fs_frag - 1); 151 for (d = fs->fs_size; d < dmax; d++) 152 setbmap(d); 153 for (c = 0; c < fs->fs_ncg; c++) { 154 if (got_siginfo) { 155 printf("%s: phase 5: cyl group %d of %d (%d%%)\n", 156 cdevname, c, sblock.fs_ncg, 157 c * 100 / sblock.fs_ncg); 158 got_siginfo = 0; 159 } 160 if (got_sigalarm) { 161 setproctitle("%s p5 %d%%", cdevname, 162 c * 100 / sblock.fs_ncg); 163 got_sigalarm = 0; 164 } 165 cgbp = cgget(c); 166 cg = cgbp->b_un.b_cg; 167 if (!cg_chkmagic(cg)) 168 pfatal("CG %d: BAD MAGIC NUMBER\n", c); 169 newcg->cg_time = cg->cg_time; 170 newcg->cg_old_time = cg->cg_old_time; 171 newcg->cg_unrefs = cg->cg_unrefs; 172 newcg->cg_cgx = c; 173 dbase = cgbase(fs, c); 174 dmax = dbase + fs->fs_fpg; 175 if (dmax > fs->fs_size) 176 dmax = fs->fs_size; 177 newcg->cg_ndblk = dmax - dbase; 178 if (fs->fs_magic == FS_UFS1_MAGIC) { 179 if (c == fs->fs_ncg - 1) 180 newcg->cg_old_ncyl = howmany(newcg->cg_ndblk, 181 fs->fs_fpg / fs->fs_old_cpg); 182 else 183 newcg->cg_old_ncyl = fs->fs_old_cpg; 184 newcg->cg_old_niblk = fs->fs_ipg; 185 newcg->cg_niblk = 0; 186 } 187 if (fs->fs_contigsumsize > 0) 188 newcg->cg_nclusterblks = newcg->cg_ndblk / fs->fs_frag; 189 newcg->cg_cs.cs_ndir = 0; 190 newcg->cg_cs.cs_nffree = 0; 191 newcg->cg_cs.cs_nbfree = 0; 192 newcg->cg_cs.cs_nifree = fs->fs_ipg; 193 if (cg->cg_rotor >= 0 && cg->cg_rotor < newcg->cg_ndblk) 194 newcg->cg_rotor = cg->cg_rotor; 195 else 196 newcg->cg_rotor = 0; 197 if (cg->cg_frotor >= 0 && cg->cg_frotor < newcg->cg_ndblk) 198 newcg->cg_frotor = cg->cg_frotor; 199 else 200 newcg->cg_frotor = 0; 201 if (cg->cg_irotor >= 0 && cg->cg_irotor < fs->fs_ipg) 202 newcg->cg_irotor = cg->cg_irotor; 203 else 204 newcg->cg_irotor = 0; 205 if (fs->fs_magic == FS_UFS1_MAGIC) { 206 newcg->cg_initediblk = 0; 207 } else { 208 if ((unsigned)cg->cg_initediblk > fs->fs_ipg) 209 newcg->cg_initediblk = fs->fs_ipg; 210 else 211 newcg->cg_initediblk = cg->cg_initediblk; 212 } 213 memset(&newcg->cg_frsum[0], 0, sizeof newcg->cg_frsum); 214 memset(cg_inosused(newcg), 0, (size_t)(mapsize)); 215 j = fs->fs_ipg * c; 216 for (i = 0; i < inostathead[c].il_numalloced; j++, i++) { 217 switch (inoinfo(j)->ino_state) { 218 219 case USTATE: 220 break; 221 222 case DSTATE: 223 case DCLEAR: 224 case DFOUND: 225 case DZLINK: 226 newcg->cg_cs.cs_ndir++; 227 /* FALLTHROUGH */ 228 229 case FSTATE: 230 case FCLEAR: 231 case FZLINK: 232 newcg->cg_cs.cs_nifree--; 233 setbit(cg_inosused(newcg), i); 234 break; 235 236 default: 237 if (j < (int)ROOTINO) 238 break; 239 errx(EEXIT, "BAD STATE %d FOR INODE I=%d", 240 inoinfo(j)->ino_state, j); 241 } 242 } 243 if (c == 0) 244 for (i = 0; i < (int)ROOTINO; i++) { 245 setbit(cg_inosused(newcg), i); 246 newcg->cg_cs.cs_nifree--; 247 } 248 start = -1; 249 for (i = 0, d = dbase; 250 d < dmax; 251 d += fs->fs_frag, i += fs->fs_frag) { 252 frags = 0; 253 for (j = 0; j < fs->fs_frag; j++) { 254 if (testbmap(d + j)) { 255 if ((Eflag || Zflag) && start != -1) { 256 clear_blocks(start, d + j - 1); 257 start = -1; 258 } 259 continue; 260 } 261 if (start == -1) 262 start = d + j; 263 setbit(cg_blksfree(newcg), i + j); 264 frags++; 265 } 266 if (frags == fs->fs_frag) { 267 newcg->cg_cs.cs_nbfree++; 268 if (fs->fs_contigsumsize > 0) 269 setbit(cg_clustersfree(newcg), 270 i / fs->fs_frag); 271 } else if (frags > 0) { 272 newcg->cg_cs.cs_nffree += frags; 273 blk = blkmap(fs, cg_blksfree(newcg), i); 274 ffs_fragacct(fs, blk, newcg->cg_frsum, 1); 275 } 276 } 277 if ((Eflag || Zflag) && start != -1) 278 clear_blocks(start, d - 1); 279 if (fs->fs_contigsumsize > 0) { 280 int32_t *sump = cg_clustersum(newcg); 281 u_char *mapp = cg_clustersfree(newcg); 282 int map = *mapp++; 283 int bit = 1; 284 int run = 0; 285 286 for (i = 0; i < newcg->cg_nclusterblks; i++) { 287 if ((map & bit) != 0) { 288 run++; 289 } else if (run != 0) { 290 if (run > fs->fs_contigsumsize) 291 run = fs->fs_contigsumsize; 292 sump[run]++; 293 run = 0; 294 } 295 if ((i & (CHAR_BIT - 1)) != (CHAR_BIT - 1)) { 296 bit <<= 1; 297 } else { 298 map = *mapp++; 299 bit = 1; 300 } 301 } 302 if (run != 0) { 303 if (run > fs->fs_contigsumsize) 304 run = fs->fs_contigsumsize; 305 sump[run]++; 306 } 307 } 308 if (bkgrdflag != 0) { 309 cstotal.cs_nffree += cg->cg_cs.cs_nffree; 310 cstotal.cs_nbfree += cg->cg_cs.cs_nbfree; 311 cstotal.cs_nifree += cg->cg_cs.cs_nifree; 312 cstotal.cs_ndir += cg->cg_cs.cs_ndir; 313 } else { 314 cstotal.cs_nffree += newcg->cg_cs.cs_nffree; 315 cstotal.cs_nbfree += newcg->cg_cs.cs_nbfree; 316 cstotal.cs_nifree += newcg->cg_cs.cs_nifree; 317 cstotal.cs_ndir += newcg->cg_cs.cs_ndir; 318 } 319 cs = &fs->fs_cs(fs, c); 320 if (cursnapshot == 0 && 321 memcmp(&newcg->cg_cs, cs, sizeof *cs) != 0 && 322 dofix(&idesc[0], "FREE BLK COUNT(S) WRONG IN SUPERBLK")) { 323 memmove(cs, &newcg->cg_cs, sizeof *cs); 324 sbdirty(); 325 } 326 if (rewritecg) { 327 memmove(cg, newcg, (size_t)fs->fs_cgsize); 328 dirty(cgbp); 329 continue; 330 } 331 if (cursnapshot == 0 && 332 memcmp(newcg, cg, basesize) != 0 && 333 dofix(&idesc[2], "SUMMARY INFORMATION BAD")) { 334 memmove(cg, newcg, (size_t)basesize); 335 dirty(cgbp); 336 } 337 if (bkgrdflag != 0 || usedsoftdep || debug) 338 update_maps(cg, newcg, bkgrdflag); 339 if (cursnapshot == 0 && 340 memcmp(cg_inosused(newcg), cg_inosused(cg), mapsize) != 0 && 341 dofix(&idesc[1], "BLK(S) MISSING IN BIT MAPS")) { 342 memmove(cg_inosused(cg), cg_inosused(newcg), 343 (size_t)mapsize); 344 dirty(cgbp); 345 } 346 } 347 if (cursnapshot == 0 && 348 memcmp(&cstotal, &fs->fs_cstotal, sizeof cstotal) != 0 349 && dofix(&idesc[0], "SUMMARY BLK COUNT(S) WRONG IN SUPERBLK")) { 350 memmove(&fs->fs_cstotal, &cstotal, sizeof cstotal); 351 fs->fs_ronly = 0; 352 fs->fs_fmod = 0; 353 sbdirty(); 354 } 355 356 /* 357 * When doing background fsck on a snapshot, figure out whether 358 * the superblock summary is inaccurate and correct it when 359 * necessary. 360 */ 361 if (cursnapshot != 0) { 362 cmd.size = 1; 363 364 cmd.value = cstotal.cs_ndir - fs->fs_cstotal.cs_ndir; 365 if (cmd.value != 0) { 366 if (debug) 367 printf("adjndir by %+" PRIi64 "\n", cmd.value); 368 if (bkgrdsumadj == 0 || sysctl(adjndir, MIBSIZE, 0, 0, 369 &cmd, sizeof cmd) == -1) 370 rwerror("ADJUST NUMBER OF DIRECTORIES", cmd.value); 371 } 372 373 cmd.value = cstotal.cs_nbfree - fs->fs_cstotal.cs_nbfree; 374 if (cmd.value != 0) { 375 if (debug) 376 printf("adjnbfree by %+" PRIi64 "\n", cmd.value); 377 if (bkgrdsumadj == 0 || sysctl(adjnbfree, MIBSIZE, 0, 0, 378 &cmd, sizeof cmd) == -1) 379 rwerror("ADJUST NUMBER OF FREE BLOCKS", cmd.value); 380 } 381 382 cmd.value = cstotal.cs_nifree - fs->fs_cstotal.cs_nifree; 383 if (cmd.value != 0) { 384 if (debug) 385 printf("adjnifree by %+" PRIi64 "\n", cmd.value); 386 if (bkgrdsumadj == 0 || sysctl(adjnifree, MIBSIZE, 0, 0, 387 &cmd, sizeof cmd) == -1) 388 rwerror("ADJUST NUMBER OF FREE INODES", cmd.value); 389 } 390 391 cmd.value = cstotal.cs_nffree - fs->fs_cstotal.cs_nffree; 392 if (cmd.value != 0) { 393 if (debug) 394 printf("adjnffree by %+" PRIi64 "\n", cmd.value); 395 if (bkgrdsumadj == 0 || sysctl(adjnffree, MIBSIZE, 0, 0, 396 &cmd, sizeof cmd) == -1) 397 rwerror("ADJUST NUMBER OF FREE FRAGS", cmd.value); 398 } 399 400 cmd.value = cstotal.cs_numclusters - fs->fs_cstotal.cs_numclusters; 401 if (cmd.value != 0) { 402 if (debug) 403 printf("adjnumclusters by %+" PRIi64 "\n", cmd.value); 404 if (bkgrdsumadj == 0 || sysctl(adjnumclusters, MIBSIZE, 0, 0, 405 &cmd, sizeof cmd) == -1) 406 rwerror("ADJUST NUMBER OF FREE CLUSTERS", cmd.value); 407 } 408 } 409 } 410 411 /* 412 * Compare the original cylinder group inode and block bitmaps with the 413 * updated cylinder group inode and block bitmaps. Free inodes and blocks 414 * that have been added. Complain if any previously freed inodes blocks 415 * are now allocated. 416 */ 417 void 418 update_maps( 419 struct cg *oldcg, /* cylinder group of claimed allocations */ 420 struct cg *newcg, /* cylinder group of determined allocations */ 421 int usesysctl) /* 1 => use sysctl interface to update maps */ 422 { 423 int inomapsize, excessdirs; 424 struct fs *fs = &sblock; 425 426 inomapsize = howmany(fs->fs_ipg, CHAR_BIT); 427 excessdirs = oldcg->cg_cs.cs_ndir - newcg->cg_cs.cs_ndir; 428 if (excessdirs < 0) { 429 pfatal("LOST %d DIRECTORIES\n", -excessdirs); 430 excessdirs = 0; 431 } 432 if (excessdirs > 0) 433 check_maps(cg_inosused(newcg), cg_inosused(oldcg), inomapsize, 434 oldcg->cg_cgx * (ufs2_daddr_t)fs->fs_ipg, "DIR", freedirs, 435 0, excessdirs, usesysctl); 436 check_maps(cg_inosused(newcg), cg_inosused(oldcg), inomapsize, 437 oldcg->cg_cgx * (ufs2_daddr_t)fs->fs_ipg, "FILE", freefiles, 438 excessdirs, fs->fs_ipg, usesysctl); 439 check_maps(cg_blksfree(oldcg), cg_blksfree(newcg), 440 howmany(fs->fs_fpg, CHAR_BIT), 441 oldcg->cg_cgx * (ufs2_daddr_t)fs->fs_fpg, "FRAG", 442 freeblks, 0, fs->fs_fpg, usesysctl); 443 } 444 445 static void 446 check_maps( 447 u_char *map1, /* map of claimed allocations */ 448 u_char *map2, /* map of determined allocations */ 449 int mapsize, /* size of above two maps */ 450 ufs2_daddr_t startvalue, /* resource value for first element in map */ 451 const char *name, /* name of resource found in maps */ 452 int *opcode, /* sysctl opcode to free resource */ 453 int skip, /* number of entries to skip before starting to free */ 454 int limit, /* limit on number of entries to free */ 455 int usesysctl) /* 1 => use sysctl interface to update maps */ 456 { 457 # define BUFSIZE 16 458 char buf[BUFSIZE]; 459 long i, j, k, l, m, size; 460 ufs2_daddr_t n, astart, aend, ustart, uend; 461 void (*msg)(const char *fmt, ...); 462 463 if (usesysctl) 464 msg = pfatal; 465 else 466 msg = pwarn; 467 astart = ustart = aend = uend = -1; 468 for (i = 0; i < mapsize; i++) { 469 j = *map1++; 470 k = *map2++; 471 if (j == k) 472 continue; 473 for (m = 0, l = 1; m < CHAR_BIT; m++, l <<= 1) { 474 if ((j & l) == (k & l)) 475 continue; 476 n = startvalue + i * CHAR_BIT + m; 477 if ((j & l) != 0) { 478 if (astart == -1) { 479 astart = aend = n; 480 continue; 481 } 482 if (aend + 1 == n) { 483 aend = n; 484 continue; 485 } 486 if (astart == aend) 487 (*msg)("ALLOCATED %s %" PRId64 488 " MARKED FREE\n", 489 name, astart); 490 else 491 (*msg)("%s %sS %" PRId64 "-%" PRId64 492 " MARKED FREE\n", 493 "ALLOCATED", name, astart, aend); 494 astart = aend = n; 495 } else { 496 if (ustart == -1) { 497 ustart = uend = n; 498 continue; 499 } 500 if (uend + 1 == n) { 501 uend = n; 502 continue; 503 } 504 size = uend - ustart + 1; 505 if (size <= skip) { 506 skip -= size; 507 ustart = uend = n; 508 continue; 509 } 510 if (skip > 0) { 511 ustart += skip; 512 size -= skip; 513 skip = 0; 514 } 515 if (size > limit) 516 size = limit; 517 if (debug && size == 1) 518 pwarn("%s %s %" PRId64 519 " MARKED USED\n", 520 "UNALLOCATED", name, ustart); 521 else if (debug) 522 pwarn("%s %sS %" PRId64 "-%" PRId64 523 " MARKED USED\n", 524 "UNALLOCATED", name, ustart, 525 ustart + size - 1); 526 if (usesysctl != 0) { 527 cmd.value = ustart; 528 cmd.size = size; 529 if (sysctl(opcode, MIBSIZE, 0, 0, 530 &cmd, sizeof cmd) == -1) { 531 snprintf(buf, BUFSIZE, 532 "FREE %s", name); 533 rwerror(buf, cmd.value); 534 } 535 } 536 limit -= size; 537 if (limit <= 0) 538 return; 539 ustart = uend = n; 540 } 541 } 542 } 543 if (astart != -1) { 544 if (astart == aend) 545 (*msg)("ALLOCATED %s %" PRId64 546 " MARKED FREE\n", name, astart); 547 else 548 (*msg)("ALLOCATED %sS %" PRId64 "-%" PRId64 549 " MARKED FREE\n", 550 name, astart, aend); 551 } 552 if (ustart != -1) { 553 size = uend - ustart + 1; 554 if (size <= skip) 555 return; 556 if (skip > 0) { 557 ustart += skip; 558 size -= skip; 559 } 560 if (size > limit) 561 size = limit; 562 if (debug) { 563 if (size == 1) 564 pwarn("UNALLOCATED %s %" PRId64 565 " MARKED USED\n", 566 name, ustart); 567 else 568 pwarn("UNALLOCATED %sS %" PRId64 "-%" PRId64 569 " MARKED USED\n", 570 name, ustart, ustart + size - 1); 571 } 572 if (usesysctl != 0) { 573 cmd.value = ustart; 574 cmd.size = size; 575 if (sysctl(opcode, MIBSIZE, 0, 0, &cmd, 576 sizeof cmd) == -1) { 577 snprintf(buf, BUFSIZE, "FREE %s", name); 578 rwerror(buf, cmd.value); 579 } 580 } 581 } 582 } 583 584 static void 585 clear_blocks(ufs2_daddr_t start, ufs2_daddr_t end) 586 { 587 588 if (debug) 589 printf("Zero frags %jd to %jd\n", start, end); 590 if (Zflag) 591 blzero(fswritefd, fsbtodb(&sblock, start), 592 lfragtosize(&sblock, end - start + 1)); 593 if (Eflag) 594 blerase(fswritefd, fsbtodb(&sblock, start), 595 lfragtosize(&sblock, end - start + 1)); 596 } 597