usr.sbin/makefs/ffs.c

   1 /*      $NetBSD: ffs.c,v 1.44 2009/04/28 22:49:26 joerg Exp $   */
   2
   3 /*
   4  * Copyright (c) 2001 Wasabi Systems, Inc.
   5  * All rights reserved.
   6  *
   7  * Written by Luke Mewburn for Wasabi Systems, Inc.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  * 3. All advertising materials mentioning features or use of this software
  18  *    must display the following acknowledgement:
  19  *      This product includes software developed for the NetBSD Project by
  20  *      Wasabi Systems, Inc.
  21  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
  22  *    or promote products derived from this software without specific prior
  23  *    written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
  26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
  29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  35  * POSSIBILITY OF SUCH DAMAGE.
  36  */
  37 /*
  38  * Copyright (c) 1982, 1986, 1989, 1993
  39  *      The Regents of the University of California.  All rights reserved.
  40  *
  41  * Redistribution and use in source and binary forms, with or without
  42  * modification, are permitted provided that the following conditions
  43  * are met:
  44  * 1. Redistributions of source code must retain the above copyright
  45  *    notice, this list of conditions and the following disclaimer.
  46  * 2. Redistributions in binary form must reproduce the above copyright
  47  *    notice, this list of conditions and the following disclaimer in the
  48  *    documentation and/or other materials provided with the distribution.
  49  * 3. Neither the name of the University nor the names of its contributors
  50  *    may be used to endorse or promote products derived from this software
  51  *    without specific prior written permission.
  52  *
  53  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  54  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  55  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  56  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  57  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  58  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  59  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  60  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  61  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  62  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  63  * SUCH DAMAGE.
  64  *
  65  *      @(#)ffs_alloc.c 8.19 (Berkeley) 7/13/95
  66  */
  67
  68 #include <sys/cdefs.h>
  69 __FBSDID("$FreeBSD$");
  70
  71 #include <sys/param.h>
  72
  73 #include <sys/mount.h>
  74
  75 #include <assert.h>
  76 #include <errno.h>
  77 #include <fcntl.h>
  78 #include <stdarg.h>
  79 #include <stdint.h>
  80 #include <stdio.h>
  81 #include <stdlib.h>
  82 #include <string.h>
  83 #include <time.h>
  84 #include <unistd.h>
  85
  86 #include "makefs.h"
  87 #include "ffs.h"
  88
  89 #if HAVE_STRUCT_STATVFS_F_IOSIZE && HAVE_FSTATVFS
  90 #include <sys/statvfs.h>
  91 #endif
  92
  93 #include <ufs/ufs/dinode.h>
  94 #include <ufs/ufs/dir.h>
  95 #include <ufs/ffs/fs.h>
  96
  97
  98 #include "ffs/ufs_bswap.h"
  99 #include "ffs/ufs_inode.h"
 100 #include "ffs/newfs_extern.h"
 101 #include "ffs/ffs_extern.h"
 102
 103 #undef DIP
 104 #define DIP(dp, field) \
 105         ((ffs_opts->version == 1) ? \
 106         (dp)->ffs1_din.di_##field : (dp)->ffs2_din.di_##field)
 107
 108 /*
 109  * Various file system defaults (cribbed from newfs(8)).
 110  */
 111 #define DFL_FRAGSIZE            1024            /* fragment size */
 112 #define DFL_BLKSIZE             8192            /* block size */
 113 #define DFL_SECSIZE             512             /* sector size */
 114 #define DFL_CYLSPERGROUP        65536           /* cylinders per group */
 115 #define DFL_FRAGSPERINODE       4               /* fragments per inode */
 116 #define DFL_ROTDELAY            0               /* rotational delay */
 117 #define DFL_NRPOS               1               /* rotational positions */
 118 #define DFL_RPM                 3600            /* rpm of disk */
 119 #define DFL_NSECTORS            64              /* # of sectors */
 120 #define DFL_NTRACKS             16              /* # of tracks */
 121
 122
 123 typedef struct {
 124         u_char          *buf;           /* buf for directory */
 125         doff_t          size;           /* full size of buf */
 126         doff_t          cur;            /* offset of current entry */
 127 } dirbuf_t;
 128
 129
 130 static  int     ffs_create_image(const char *, fsinfo_t *);
 131 static  void    ffs_dump_fsinfo(fsinfo_t *);
 132 static  void    ffs_dump_dirbuf(dirbuf_t *, const char *, int);
 133 static  void    ffs_make_dirbuf(dirbuf_t *, const char *, fsnode *, int);
 134 static  int     ffs_populate_dir(const char *, fsnode *, fsinfo_t *);
 135 static  void    ffs_size_dir(fsnode *, fsinfo_t *);
 136 static  void    ffs_validate(const char *, fsnode *, fsinfo_t *);
 137 static  void    ffs_write_file(union dinode *, uint32_t, void *, fsinfo_t *);
 138 static  void    ffs_write_inode(union dinode *, uint32_t, const fsinfo_t *);
 139 static  void    *ffs_build_dinode1(struct ufs1_dinode *, dirbuf_t *, fsnode *,
 140                                  fsnode *, fsinfo_t *);
 141 static  void    *ffs_build_dinode2(struct ufs2_dinode *, dirbuf_t *, fsnode *,
 142                                  fsnode *, fsinfo_t *);
 143
 144
 145
 146 int     sectorsize;             /* XXX: for buf.c::getblk() */
 147
 148         /* publically visible functions */
 149
 150 void
 151 ffs_prep_opts(fsinfo_t *fsopts)
 152 {
 153         ffs_opt_t *ffs_opts;
 154
 155         if ((ffs_opts = calloc(1, sizeof(ffs_opt_t))) == NULL)
 156                 err(1, "Allocating memory for ffs_options");
 157
 158         fsopts->fs_specific = ffs_opts;
 159
 160         ffs_opts->bsize= -1;
 161         ffs_opts->fsize= -1;
 162         ffs_opts->cpg= -1;
 163         ffs_opts->density= -1;
 164         ffs_opts->minfree= -1;
 165         ffs_opts->optimization= -1;
 166         ffs_opts->maxcontig= -1;
 167         ffs_opts->maxbpg= -1;
 168         ffs_opts->avgfilesize= -1;
 169         ffs_opts->avgfpdir= -1;
 170         ffs_opts->version = 1;
 171 }
 172
 173 void
 174 ffs_cleanup_opts(fsinfo_t *fsopts)
 175 {
 176         if (fsopts->fs_specific)
 177                 free(fsopts->fs_specific);
 178 }
 179
 180 int
 181 ffs_parse_opts(const char *option, fsinfo_t *fsopts)
 182 {
 183         ffs_opt_t       *ffs_opts = fsopts->fs_specific;
 184
 185         option_t ffs_options[] = {
 186                 { "bsize",      &ffs_opts->bsize,       1,      INT_MAX,
 187                                         "block size" },
 188                 { "fsize",      &ffs_opts->fsize,       1,      INT_MAX,
 189                                         "fragment size" },
 190                 { "density",    &ffs_opts->density,     1,      INT_MAX,
 191                                         "bytes per inode" },
 192                 { "minfree",    &ffs_opts->minfree,     0,      99,
 193                                         "minfree" },
 194                 { "maxbpf",     &ffs_opts->maxbpg,      1,      INT_MAX,
 195                                         "max blocks per file in a cg" },
 196                 { "avgfilesize", &ffs_opts->avgfilesize,1,      INT_MAX,
 197                                         "expected average file size" },
 198                 { "avgfpdir",   &ffs_opts->avgfpdir,    1,      INT_MAX,
 199                                         "expected # of files per directory" },
 200                 { "extent",     &ffs_opts->maxbsize,    1,      INT_MAX,
 201                                         "maximum # extent size" },
 202                 { "maxbpcg",    &ffs_opts->maxblkspercg,1,      INT_MAX,
 203                                         "max # of blocks per group" },
 204                 { "version",    &ffs_opts->version,     1,      2,
 205                                         "UFS version" },
 206                 { .name = NULL }
 207         };
 208
 209         char    *var, *val;
 210         int     rv;
 211
 212         assert(option != NULL);
 213         assert(fsopts != NULL);
 214         assert(ffs_opts != NULL);
 215
 216         if (debug & DEBUG_FS_PARSE_OPTS)
 217                 printf("ffs_parse_opts: got `%s'\n", option);
 218
 219         if ((var = strdup(option)) == NULL)
 220                 err(1, "Allocating memory for copy of option string");
 221         rv = 0;
 222
 223         if ((val = strchr(var, '=')) == NULL) {
 224                 warnx("Option `%s' doesn't contain a value", var);
 225                 goto leave_ffs_parse_opts;
 226         }
 227         *val++ = '\0';
 228
 229         if (strcmp(var, "optimization") == 0) {
 230                 if (strcmp(val, "time") == 0) {
 231                         ffs_opts->optimization = FS_OPTTIME;
 232                 } else if (strcmp(val, "space") == 0) {
 233                         ffs_opts->optimization = FS_OPTSPACE;
 234                 } else {
 235                         warnx("Invalid optimization `%s'", val);
 236                         goto leave_ffs_parse_opts;
 237                 }
 238                 rv = 1;
 239         } else
 240                 rv = set_option(ffs_options, var, val);
 241
 242  leave_ffs_parse_opts:
 243         if (var)
 244                 free(var);
 245         return (rv);
 246 }
 247
 248
 249 void
 250 ffs_makefs(const char *image, const char *dir, fsnode *root, fsinfo_t *fsopts)
 251 {
 252         struct fs       *superblock;
 253         struct timeval  start;
 254
 255         assert(image != NULL);
 256         assert(dir != NULL);
 257         assert(root != NULL);
 258         assert(fsopts != NULL);
 259
 260         if (debug & DEBUG_FS_MAKEFS)
 261                 printf("ffs_makefs: image %s directory %s root %p\n",
 262                     image, dir, root);
 263
 264                 /* validate tree and options */
 265         TIMER_START(start);
 266         ffs_validate(dir, root, fsopts);
 267         TIMER_RESULTS(start, "ffs_validate");
 268
 269         printf("Calculated size of `%s': %lld bytes, %lld inodes\n",
 270             image, (long long)fsopts->size, (long long)fsopts->inodes);
 271
 272                 /* create image */
 273         TIMER_START(start);
 274         if (ffs_create_image(image, fsopts) == -1)
 275                 errx(1, "Image file `%s' not created.", image);
 276         TIMER_RESULTS(start, "ffs_create_image");
 277
 278         fsopts->curinode = ROOTINO;
 279
 280         if (debug & DEBUG_FS_MAKEFS)
 281                 putchar('\n');
 282
 283                 /* populate image */
 284         printf("Populating `%s'\n", image);
 285         TIMER_START(start);
 286         if (! ffs_populate_dir(dir, root, fsopts))
 287                 errx(1, "Image file `%s' not populated.", image);
 288         TIMER_RESULTS(start, "ffs_populate_dir");
 289
 290                 /* ensure no outstanding buffers remain */
 291         if (debug & DEBUG_FS_MAKEFS)
 292                 bcleanup();
 293
 294                 /* update various superblock parameters */
 295         superblock = fsopts->superblock;
 296         superblock->fs_fmod = 0;
 297         superblock->fs_old_cstotal.cs_ndir   = superblock->fs_cstotal.cs_ndir;
 298         superblock->fs_old_cstotal.cs_nbfree = superblock->fs_cstotal.cs_nbfree;
 299         superblock->fs_old_cstotal.cs_nifree = superblock->fs_cstotal.cs_nifree;
 300         superblock->fs_old_cstotal.cs_nffree = superblock->fs_cstotal.cs_nffree;
 301
 302                 /* write out superblock; image is now complete */
 303         ffs_write_superblock(fsopts->superblock, fsopts);
 304         if (close(fsopts->fd) == -1)
 305                 err(1, "Closing `%s'", image);
 306         fsopts->fd = -1;
 307         printf("Image `%s' complete\n", image);
 308 }
 309
 310         /* end of public functions */
 311
 312
 313 static void
 314 ffs_validate(const char *dir, fsnode *root, fsinfo_t *fsopts)
 315 {
 316         int32_t ncg = 1;
 317 #if notyet
 318         int32_t spc, nspf, ncyl, fssize;
 319 #endif
 320         ffs_opt_t       *ffs_opts = fsopts->fs_specific;
 321
 322         assert(dir != NULL);
 323         assert(root != NULL);
 324         assert(fsopts != NULL);
 325         assert(ffs_opts != NULL);
 326
 327         if (debug & DEBUG_FS_VALIDATE) {
 328                 printf("ffs_validate: before defaults set:\n");
 329                 ffs_dump_fsinfo(fsopts);
 330         }
 331
 332                 /* set FFS defaults */
 333         if (fsopts->sectorsize == -1)
 334                 fsopts->sectorsize = DFL_SECSIZE;
 335         if (ffs_opts->fsize == -1)
 336                 ffs_opts->fsize = MAX(DFL_FRAGSIZE, fsopts->sectorsize);
 337         if (ffs_opts->bsize == -1)
 338                 ffs_opts->bsize = MIN(DFL_BLKSIZE, 8 * ffs_opts->fsize);
 339         if (ffs_opts->cpg == -1)
 340                 ffs_opts->cpg = DFL_CYLSPERGROUP;
 341         else
 342                 ffs_opts->cpgflg = 1;
 343                                 /* fsopts->density is set below */
 344         if (ffs_opts->nsectors == -1)
 345                 ffs_opts->nsectors = DFL_NSECTORS;
 346         if (ffs_opts->minfree == -1)
 347                 ffs_opts->minfree = MINFREE;
 348         if (ffs_opts->optimization == -1)
 349                 ffs_opts->optimization = DEFAULTOPT;
 350         if (ffs_opts->maxcontig == -1)
 351                 ffs_opts->maxcontig =
 352                     MAX(1, MIN(MAXPHYS, FFS_MAXBSIZE) / ffs_opts->bsize);
 353         /* XXX ondisk32 */
 354         if (ffs_opts->maxbpg == -1)
 355                 ffs_opts->maxbpg = ffs_opts->bsize / sizeof(int32_t);
 356         if (ffs_opts->avgfilesize == -1)
 357                 ffs_opts->avgfilesize = AVFILESIZ;
 358         if (ffs_opts->avgfpdir == -1)
 359                 ffs_opts->avgfpdir = AFPDIR;
 360
 361                 /* calculate size of tree */
 362         ffs_size_dir(root, fsopts);
 363         fsopts->inodes += ROOTINO;              /* include first two inodes */
 364
 365         if (debug & DEBUG_FS_VALIDATE)
 366                 printf("ffs_validate: size of tree: %lld bytes, %lld inodes\n",
 367                     (long long)fsopts->size, (long long)fsopts->inodes);
 368
 369                 /* add requested slop */
 370         fsopts->size += fsopts->freeblocks;
 371         fsopts->inodes += fsopts->freefiles;
 372         if (fsopts->freefilepc > 0)
 373                 fsopts->inodes =
 374                     fsopts->inodes * (100 + fsopts->freefilepc) / 100;
 375         if (fsopts->freeblockpc > 0)
 376                 fsopts->size =
 377                     fsopts->size * (100 + fsopts->freeblockpc) / 100;
 378
 379                 /* add space needed for superblocks */
 380         /*
 381          * The old SBOFF (SBLOCK_UFS1) is used here because makefs is
 382          * typically used for small filesystems where space matters.
 383          * XXX make this an option.
 384          */
 385         fsopts->size += (SBLOCK_UFS1 + SBLOCKSIZE) * ncg;
 386                 /* add space needed to store inodes, x3 for blockmaps, etc */
 387         if (ffs_opts->version == 1)
 388                 fsopts->size += ncg * DINODE1_SIZE *
 389                     roundup(fsopts->inodes / ncg,
 390                         ffs_opts->bsize / DINODE1_SIZE);
 391         else
 392                 fsopts->size += ncg * DINODE2_SIZE *
 393                     roundup(fsopts->inodes / ncg,
 394                         ffs_opts->bsize / DINODE2_SIZE);
 395
 396                 /* add minfree */
 397         if (ffs_opts->minfree > 0)
 398                 fsopts->size =
 399                     fsopts->size * (100 + ffs_opts->minfree) / 100;
 400         /*
 401          * XXX  any other fs slop to add, such as csum's, bitmaps, etc ??
 402          */
 403
 404         if (fsopts->size < fsopts->minsize)     /* ensure meets minimum size */
 405                 fsopts->size = fsopts->minsize;
 406
 407                 /* round up to the next block */
 408         fsopts->size = roundup(fsopts->size, ffs_opts->bsize);
 409
 410                 /* calculate density if necessary */
 411         if (ffs_opts->density == -1)
 412                 ffs_opts->density = fsopts->size / fsopts->inodes + 1;
 413
 414         if (debug & DEBUG_FS_VALIDATE) {
 415                 printf("ffs_validate: after defaults set:\n");
 416                 ffs_dump_fsinfo(fsopts);
 417                 printf("ffs_validate: dir %s; %lld bytes, %lld inodes\n",
 418                     dir, (long long)fsopts->size, (long long)fsopts->inodes);
 419         }
 420         sectorsize = fsopts->sectorsize;        /* XXX - see earlier */
 421
 422                 /* now check calculated sizes vs requested sizes */
 423         if (fsopts->maxsize > 0 && fsopts->size > fsopts->maxsize) {
 424                 errx(1, "`%s' size of %lld is larger than the maxsize of %lld.",
 425                     dir, (long long)fsopts->size, (long long)fsopts->maxsize);
 426         }
 427 }
 428
 429
 430 static void
 431 ffs_dump_fsinfo(fsinfo_t *f)
 432 {
 433
 434         ffs_opt_t       *fs = f->fs_specific;
 435
 436         printf("fsopts at %p\n", f);
 437
 438         printf("\tsize %lld, inodes %lld, curinode %u\n",
 439             (long long)f->size, (long long)f->inodes, f->curinode);
 440
 441         printf("\tminsize %lld, maxsize %lld\n",
 442             (long long)f->minsize, (long long)f->maxsize);
 443         printf("\tfree files %lld, freefile %% %d\n",
 444             (long long)f->freefiles, f->freefilepc);
 445         printf("\tfree blocks %lld, freeblock %% %d\n",
 446             (long long)f->freeblocks, f->freeblockpc);
 447         printf("\tneedswap %d, sectorsize %d\n", f->needswap, f->sectorsize);
 448
 449         printf("\tbsize %d, fsize %d, cpg %d, density %d\n",
 450             fs->bsize, fs->fsize, fs->cpg, fs->density);
 451         printf("\tnsectors %d, rpm %d, minfree %d\n",
 452             fs->nsectors, fs->rpm, fs->minfree);
 453         printf("\tmaxcontig %d, maxbpg %d\n",
 454             fs->maxcontig, fs->maxbpg);
 455         printf("\toptimization %s\n",
 456             fs->optimization == FS_OPTSPACE ? "space" : "time");
 457 }
 458
 459
 460 static int
 461 ffs_create_image(const char *image, fsinfo_t *fsopts)
 462 {
 463 #if HAVE_STRUCT_STATVFS_F_IOSIZE && HAVE_FSTATVFS
 464         struct statvfs  sfs;
 465 #endif
 466         struct fs       *fs;
 467         char    *buf;
 468         int     i, bufsize;
 469         off_t   bufrem;
 470
 471         assert (image != NULL);
 472         assert (fsopts != NULL);
 473
 474                 /* create image */
 475         if ((fsopts->fd = open(image, O_RDWR | O_CREAT | O_TRUNC, 0666))
 476             == -1) {
 477                 warn("Can't open `%s' for writing", image);
 478                 return (-1);
 479         }
 480
 481                 /* zero image */
 482 #if HAVE_STRUCT_STATVFS_F_IOSIZE && HAVE_FSTATVFS
 483         if (fstatvfs(fsopts->fd, &sfs) == -1) {
 484 #endif
 485                 bufsize = 8192;
 486 #if HAVE_STRUCT_STATVFS_F_IOSIZE && HAVE_FSTATVFS
 487                 warn("can't fstatvfs `%s', using default %d byte chunk",
 488                     image, bufsize);
 489         } else
 490                 bufsize = sfs.f_iosize;
 491 #endif
 492         bufrem = fsopts->size;
 493         if (debug & DEBUG_FS_CREATE_IMAGE)
 494                 printf(
 495                     "zero-ing image `%s', %lld sectors, using %d byte chunks\n",
 496                     image, (long long)bufrem, bufsize);
 497         if ((buf = calloc(1, bufsize)) == NULL) {
 498                 warn("Can't create buffer for sector");
 499                 return (-1);
 500         }
 501         while (bufrem > 0) {
 502                 i = write(fsopts->fd, buf, MIN(bufsize, bufrem));
 503                 if (i == -1) {
 504                         warn("zeroing image, %lld bytes to go",
 505                             (long long)bufrem);
 506                         free(buf);
 507                         return (-1);
 508                 }
 509                 bufrem -= i;
 510         }
 511         free(buf);
 512
 513                 /* make the file system */
 514         if (debug & DEBUG_FS_CREATE_IMAGE)
 515                 printf("calling mkfs(\"%s\", ...)\n", image);
 516         fs = ffs_mkfs(image, fsopts);
 517         fsopts->superblock = (void *)fs;
 518         if (debug & DEBUG_FS_CREATE_IMAGE) {
 519                 time_t t;
 520
 521                 t = (time_t)((struct fs *)fsopts->superblock)->fs_time;
 522                 printf("mkfs returned %p; fs_time %s",
 523                     fsopts->superblock, ctime(&t));
 524                 printf("fs totals: nbfree %lld, nffree %lld, nifree %lld, ndir %lld\n",
 525                     (long long)fs->fs_cstotal.cs_nbfree,
 526                     (long long)fs->fs_cstotal.cs_nffree,
 527                     (long long)fs->fs_cstotal.cs_nifree,
 528                     (long long)fs->fs_cstotal.cs_ndir);
 529         }
 530
 531         if (fs->fs_cstotal.cs_nifree + ROOTINO < fsopts->inodes) {
 532                 warnx(
 533                 "Image file `%s' has %lld free inodes; %lld are required.",
 534                     image,
 535                     (long long)(fs->fs_cstotal.cs_nifree + ROOTINO),
 536                     (long long)fsopts->inodes);
 537                 return (-1);
 538         }
 539         return (fsopts->fd);
 540 }
 541
 542
 543 static void
 544 ffs_size_dir(fsnode *root, fsinfo_t *fsopts)
 545 {
 546         struct direct   tmpdir;
 547         fsnode *        node;
 548         int             curdirsize, this;
 549         ffs_opt_t       *ffs_opts = fsopts->fs_specific;
 550
 551         /* node may be NULL (empty directory) */
 552         assert(fsopts != NULL);
 553         assert(ffs_opts != NULL);
 554
 555         if (debug & DEBUG_FS_SIZE_DIR)
 556                 printf("ffs_size_dir: entry: bytes %lld inodes %lld\n",
 557                     (long long)fsopts->size, (long long)fsopts->inodes);
 558
 559 #define ADDDIRENT(e) do {                                               \
 560         tmpdir.d_namlen = strlen((e));                                  \
 561         this = DIRSIZ_SWAP(0, &tmpdir, 0);                                      \
 562         if (debug & DEBUG_FS_SIZE_DIR_ADD_DIRENT)                       \
 563                 printf("ADDDIRENT: was: %s (%d) this %d cur %d\n",      \
 564                     e, tmpdir.d_namlen, this, curdirsize);              \
 565         if (this + curdirsize > roundup(curdirsize, DIRBLKSIZ))         \
 566                 curdirsize = roundup(curdirsize, DIRBLKSIZ);            \
 567         curdirsize += this;                                             \
 568         if (debug & DEBUG_FS_SIZE_DIR_ADD_DIRENT)                       \
 569                 printf("ADDDIRENT: now: %s (%d) this %d cur %d\n",      \
 570                     e, tmpdir.d_namlen, this, curdirsize);              \
 571 } while (0);
 572
 573         /*
 574          * XXX  this needs to take into account extra space consumed
 575          *      by indirect blocks, etc.
 576          */
 577 #define ADDSIZE(x) do {                                                 \
 578         fsopts->size += roundup((x), ffs_opts->fsize);                  \
 579 } while (0);
 580
 581         curdirsize = 0;
 582         for (node = root; node != NULL; node = node->next) {
 583                 ADDDIRENT(node->name);
 584                 if (node == root) {                     /* we're at "." */
 585                         assert(strcmp(node->name, ".") == 0);
 586                         ADDDIRENT("..");
 587                 } else if ((node->inode->flags & FI_SIZED) == 0) {
 588                                 /* don't count duplicate names */
 589                         node->inode->flags |= FI_SIZED;
 590                         if (debug & DEBUG_FS_SIZE_DIR_NODE)
 591                                 printf("ffs_size_dir: `%s' size %lld\n",
 592                                     node->name,
 593                                     (long long)node->inode->st.st_size);
 594                         fsopts->inodes++;
 595                         if (node->type == S_IFREG)
 596                                 ADDSIZE(node->inode->st.st_size);
 597                         if (node->type == S_IFLNK) {
 598                                 int     slen;
 599
 600                                 slen = strlen(node->symlink) + 1;
 601                                 if (slen >= (ffs_opts->version == 1 ?
 602                                                 MAXSYMLINKLEN_UFS1 :
 603                                                 MAXSYMLINKLEN_UFS2))
 604                                         ADDSIZE(slen);
 605                         }
 606                 }
 607                 if (node->type == S_IFDIR)
 608                         ffs_size_dir(node->child, fsopts);
 609         }
 610         ADDSIZE(curdirsize);
 611
 612         if (debug & DEBUG_FS_SIZE_DIR)
 613                 printf("ffs_size_dir: exit: size %lld inodes %lld\n",
 614                     (long long)fsopts->size, (long long)fsopts->inodes);
 615 }
 616
 617 static void *
 618 ffs_build_dinode1(struct ufs1_dinode *dinp, dirbuf_t *dbufp, fsnode *cur,
 619                  fsnode *root, fsinfo_t *fsopts)
 620 {
 621         int slen;
 622         void *membuf;
 623
 624         memset(dinp, 0, sizeof(*dinp));
 625         dinp->di_mode = cur->inode->st.st_mode;
 626         dinp->di_nlink = cur->inode->nlink;
 627         dinp->di_size = cur->inode->st.st_size;
 628         dinp->di_atime = cur->inode->st.st_atime;
 629         dinp->di_mtime = cur->inode->st.st_mtime;
 630         dinp->di_ctime = cur->inode->st.st_ctime;
 631 #if HAVE_STRUCT_STAT_ST_MTIMENSEC
 632         dinp->di_atimensec = cur->inode->st.st_atimensec;
 633         dinp->di_mtimensec = cur->inode->st.st_mtimensec;
 634         dinp->di_ctimensec = cur->inode->st.st_ctimensec;
 635 #endif
 636 #if HAVE_STRUCT_STAT_ST_FLAGS
 637         dinp->di_flags = cur->inode->st.st_flags;
 638 #endif
 639 #if HAVE_STRUCT_STAT_ST_GEN
 640         dinp->di_gen = cur->inode->st.st_gen;
 641 #endif
 642         dinp->di_uid = cur->inode->st.st_uid;
 643         dinp->di_gid = cur->inode->st.st_gid;
 644                 /* not set: di_db, di_ib, di_blocks, di_spare */
 645
 646         membuf = NULL;
 647         if (cur == root) {                      /* "."; write dirbuf */
 648                 membuf = dbufp->buf;
 649                 dinp->di_size = dbufp->size;
 650         } else if (S_ISBLK(cur->type) || S_ISCHR(cur->type)) {
 651                 dinp->di_size = 0;      /* a device */
 652                 dinp->di_rdev =
 653                     ufs_rw32(cur->inode->st.st_rdev, fsopts->needswap);
 654         } else if (S_ISLNK(cur->type)) {        /* symlink */
 655                 slen = strlen(cur->symlink);
 656                 if (slen < MAXSYMLINKLEN_UFS1) {        /* short link */
 657                         memcpy(dinp->di_db, cur->symlink, slen);
 658                 } else
 659                         membuf = cur->symlink;
 660                 dinp->di_size = slen;
 661         }
 662         return membuf;
 663 }
 664
 665 static void *
 666 ffs_build_dinode2(struct ufs2_dinode *dinp, dirbuf_t *dbufp, fsnode *cur,
 667                  fsnode *root, fsinfo_t *fsopts)
 668 {
 669         int slen;
 670         void *membuf;
 671
 672         memset(dinp, 0, sizeof(*dinp));
 673         dinp->di_mode = cur->inode->st.st_mode;
 674         dinp->di_nlink = cur->inode->nlink;
 675         dinp->di_size = cur->inode->st.st_size;
 676         dinp->di_atime = cur->inode->st.st_atime;
 677         dinp->di_mtime = cur->inode->st.st_mtime;
 678         dinp->di_ctime = cur->inode->st.st_ctime;
 679 #if HAVE_STRUCT_STAT_ST_MTIMENSEC
 680         dinp->di_atimensec = cur->inode->st.st_atimensec;
 681         dinp->di_mtimensec = cur->inode->st.st_mtimensec;
 682         dinp->di_ctimensec = cur->inode->st.st_ctimensec;
 683 #endif
 684 #if HAVE_STRUCT_STAT_ST_FLAGS
 685         dinp->di_flags = cur->inode->st.st_flags;
 686 #endif
 687 #if HAVE_STRUCT_STAT_ST_GEN
 688         dinp->di_gen = cur->inode->st.st_gen;
 689 #endif
 690 #if HAVE_STRUCT_STAT_BIRTHTIME
 691         dinp->di_birthtime = cur->inode->st.st_birthtime;
 692         dinp->di_birthnsec = cur->inode->st.st_birthtimensec;
 693 #endif
 694         dinp->di_uid = cur->inode->st.st_uid;
 695         dinp->di_gid = cur->inode->st.st_gid;
 696                 /* not set: di_db, di_ib, di_blocks, di_spare */
 697
 698         membuf = NULL;
 699         if (cur == root) {                      /* "."; write dirbuf */
 700                 membuf = dbufp->buf;
 701                 dinp->di_size = dbufp->size;
 702         } else if (S_ISBLK(cur->type) || S_ISCHR(cur->type)) {
 703                 dinp->di_size = 0;      /* a device */
 704                 dinp->di_rdev =
 705                     ufs_rw64(cur->inode->st.st_rdev, fsopts->needswap);
 706         } else if (S_ISLNK(cur->type)) {        /* symlink */
 707                 slen = strlen(cur->symlink);
 708                 if (slen < MAXSYMLINKLEN_UFS2) {        /* short link */
 709                         memcpy(dinp->di_db, cur->symlink, slen);
 710                 } else
 711                         membuf = cur->symlink;
 712                 dinp->di_size = slen;
 713         }
 714         return membuf;
 715 }
 716
 717 static int
 718 ffs_populate_dir(const char *dir, fsnode *root, fsinfo_t *fsopts)
 719 {
 720         fsnode          *cur;
 721         dirbuf_t        dirbuf;
 722         union dinode    din;
 723         void            *membuf;
 724         char            path[MAXPATHLEN + 1];
 725         ffs_opt_t       *ffs_opts = fsopts->fs_specific;
 726
 727         assert(dir != NULL);
 728         assert(root != NULL);
 729         assert(fsopts != NULL);
 730         assert(ffs_opts != NULL);
 731
 732         (void)memset(&dirbuf, 0, sizeof(dirbuf));
 733
 734         if (debug & DEBUG_FS_POPULATE)
 735                 printf("ffs_populate_dir: PASS 1  dir %s node %p\n", dir, root);
 736
 737                 /*
 738                  * pass 1: allocate inode numbers, build directory `file'
 739                  */
 740         for (cur = root; cur != NULL; cur = cur->next) {
 741                 if ((cur->inode->flags & FI_ALLOCATED) == 0) {
 742                         cur->inode->flags |= FI_ALLOCATED;
 743                         if (cur == root && cur->parent != NULL)
 744                                 cur->inode->ino = cur->parent->inode->ino;
 745                         else {
 746                                 cur->inode->ino = fsopts->curinode;
 747                                 fsopts->curinode++;
 748                         }
 749                 }
 750                 ffs_make_dirbuf(&dirbuf, cur->name, cur, fsopts->needswap);
 751                 if (cur == root) {              /* we're at "."; add ".." */
 752                         ffs_make_dirbuf(&dirbuf, "..",
 753                             cur->parent == NULL ? cur : cur->parent->first,
 754                             fsopts->needswap);
 755                         root->inode->nlink++;   /* count my parent's link */
 756                 } else if (cur->child != NULL)
 757                         root->inode->nlink++;   /* count my child's link */
 758
 759                 /*
 760                  * XXX  possibly write file and long symlinks here,
 761                  *      ensuring that blocks get written before inodes?
 762                  *      otoh, this isn't a real filesystem, so who
 763                  *      cares about ordering? :-)
 764                  */
 765         }
 766         if (debug & DEBUG_FS_POPULATE_DIRBUF)
 767                 ffs_dump_dirbuf(&dirbuf, dir, fsopts->needswap);
 768
 769                 /*
 770                  * pass 2: write out dirbuf, then non-directories at this level
 771                  */
 772         if (debug & DEBUG_FS_POPULATE)
 773                 printf("ffs_populate_dir: PASS 2  dir %s\n", dir);
 774         for (cur = root; cur != NULL; cur = cur->next) {
 775                 if (cur->inode->flags & FI_WRITTEN)
 776                         continue;               /* skip hard-linked entries */
 777                 cur->inode->flags |= FI_WRITTEN;
 778
 779                 if (cur->contents == NULL) {
 780                         if (snprintf(path, sizeof(path), "%s/%s", dir,
 781                             cur->name) >= sizeof(path))
 782                                 errx(1, "Pathname too long.");
 783                 }
 784
 785                 if (cur->child != NULL)
 786                         continue;               /* child creates own inode */
 787
 788                                 /* build on-disk inode */
 789                 if (ffs_opts->version == 1)
 790                         membuf = ffs_build_dinode1(&din.ffs1_din, &dirbuf, cur,
 791                             root, fsopts);
 792                 else
 793                         membuf = ffs_build_dinode2(&din.ffs2_din, &dirbuf, cur,
 794                             root, fsopts);
 795
 796                 if (debug & DEBUG_FS_POPULATE_NODE) {
 797                         printf("ffs_populate_dir: writing ino %d, %s",
 798                             cur->inode->ino, inode_type(cur->type));
 799                         if (cur->inode->nlink > 1)
 800                                 printf(", nlink %d", cur->inode->nlink);
 801                         putchar('\n');
 802                 }
 803
 804                 if (membuf != NULL) {
 805                         ffs_write_file(&din, cur->inode->ino, membuf, fsopts);
 806                 } else if (S_ISREG(cur->type)) {
 807                         ffs_write_file(&din, cur->inode->ino,
 808                             (cur->contents) ?  cur->contents : path, fsopts);
 809                 } else {
 810                         assert (! S_ISDIR(cur->type));
 811                         ffs_write_inode(&din, cur->inode->ino, fsopts);
 812                 }
 813         }
 814
 815                 /*
 816                  * pass 3: write out sub-directories
 817                  */
 818         if (debug & DEBUG_FS_POPULATE)
 819                 printf("ffs_populate_dir: PASS 3  dir %s\n", dir);
 820         for (cur = root; cur != NULL; cur = cur->next) {
 821                 if (cur->child == NULL)
 822                         continue;
 823                 if (snprintf(path, sizeof(path), "%s/%s", dir, cur->name)
 824                     >= sizeof(path))
 825                         errx(1, "Pathname too long.");
 826                 if (! ffs_populate_dir(path, cur->child, fsopts))
 827                         return (0);
 828         }
 829
 830         if (debug & DEBUG_FS_POPULATE)
 831                 printf("ffs_populate_dir: DONE dir %s\n", dir);
 832
 833                 /* cleanup */
 834         if (dirbuf.buf != NULL)
 835                 free(dirbuf.buf);
 836         return (1);
 837 }
 838
 839
 840 static void
 841 ffs_write_file(union dinode *din, uint32_t ino, void *buf, fsinfo_t *fsopts)
 842 {
 843         int     isfile, ffd;
 844         char    *fbuf, *p;
 845         off_t   bufleft, chunk, offset;
 846         ssize_t nread;
 847         struct inode    in;
 848         struct buf *    bp;
 849         ffs_opt_t       *ffs_opts = fsopts->fs_specific;
 850
 851         assert (din != NULL);
 852         assert (buf != NULL);
 853         assert (fsopts != NULL);
 854         assert (ffs_opts != NULL);
 855
 856         isfile = S_ISREG(DIP(din, mode));
 857         fbuf = NULL;
 858         ffd = -1;
 859         p = NULL;
 860
 861         in.i_fs = (struct fs *)fsopts->superblock;
 862
 863         if (debug & DEBUG_FS_WRITE_FILE) {
 864                 printf(
 865                     "ffs_write_file: ino %u, din %p, isfile %d, %s, size %lld",
 866                     ino, din, isfile, inode_type(DIP(din, mode) & S_IFMT),
 867                     (long long)DIP(din, size));
 868                 if (isfile)
 869                         printf(", file '%s'\n", (char *)buf);
 870                 else
 871                         printf(", buffer %p\n", buf);
 872         }
 873
 874         in.i_number = ino;
 875         in.i_size = DIP(din, size);
 876         if (ffs_opts->version == 1)
 877                 memcpy(&in.i_din.ffs1_din, &din->ffs1_din,
 878                     sizeof(in.i_din.ffs1_din));
 879         else
 880                 memcpy(&in.i_din.ffs2_din, &din->ffs2_din,
 881                     sizeof(in.i_din.ffs2_din));
 882         in.i_fd = fsopts->fd;
 883
 884         if (DIP(din, size) == 0)
 885                 goto write_inode_and_leave;             /* mmm, cheating */
 886
 887         if (isfile) {
 888                 if ((fbuf = malloc(ffs_opts->bsize)) == NULL)
 889                         err(1, "Allocating memory for write buffer");
 890                 if ((ffd = open((char *)buf, O_RDONLY, 0444)) == -1) {
 891                         warn("Can't open `%s' for reading", (char *)buf);
 892                         goto leave_ffs_write_file;
 893                 }
 894         } else {
 895                 p = buf;
 896         }
 897
 898         chunk = 0;
 899         for (bufleft = DIP(din, size); bufleft > 0; bufleft -= chunk) {
 900                 chunk = MIN(bufleft, ffs_opts->bsize);
 901                 if (!isfile)
 902                         ;
 903                 else if ((nread = read(ffd, fbuf, chunk)) == -1)
 904                         err(EXIT_FAILURE, "Reading `%s', %lld bytes to go",
 905                             (char *)buf, (long long)bufleft);
 906                 else if (nread != chunk)
 907                         errx(EXIT_FAILURE, "Reading `%s', %lld bytes to go, "
 908                             "read %zd bytes, expected %ju bytes, does "
 909                             "metalog size= attribute mismatch source size?",
 910                             (char *)buf, (long long)bufleft, nread,
 911                             (uintmax_t)chunk);
 912                 else
 913                         p = fbuf;
 914                 offset = DIP(din, size) - bufleft;
 915                 if (debug & DEBUG_FS_WRITE_FILE_BLOCK)
 916                         printf(
 917                 "ffs_write_file: write %p offset %lld size %lld left %lld\n",
 918                             p, (long long)offset,
 919                             (long long)chunk, (long long)bufleft);
 920         /*
 921          * XXX  if holey support is desired, do the check here
 922          *
 923          * XXX  might need to write out last bit in fragroundup
 924          *      sized chunk. however, ffs_balloc() handles this for us
 925          */
 926                 errno = ffs_balloc(&in, offset, chunk, &bp);
 927  bad_ffs_write_file:
 928                 if (errno != 0)
 929                         err(1,
 930                             "Writing inode %d (%s), bytes %lld + %lld",
 931                             ino,
 932                             isfile ? (char *)buf :
 933                               inode_type(DIP(din, mode) & S_IFMT),
 934                             (long long)offset, (long long)chunk);
 935                 memcpy(bp->b_data, p, chunk);
 936                 errno = bwrite(bp);
 937                 if (errno != 0)
 938                         goto bad_ffs_write_file;
 939                 brelse(bp);
 940                 if (!isfile)
 941                         p += chunk;
 942         }
 943
 944  write_inode_and_leave:
 945         ffs_write_inode(&in.i_din, in.i_number, fsopts);
 946
 947  leave_ffs_write_file:
 948         if (fbuf)
 949                 free(fbuf);
 950         if (ffd != -1)
 951                 close(ffd);
 952 }
 953
 954
 955 static void
 956 ffs_dump_dirbuf(dirbuf_t *dbuf, const char *dir, int needswap)
 957 {
 958         doff_t          i;
 959         struct direct   *de;
 960         uint16_t        reclen;
 961
 962         assert (dbuf != NULL);
 963         assert (dir != NULL);
 964         printf("ffs_dump_dirbuf: dir %s size %d cur %d\n",
 965             dir, dbuf->size, dbuf->cur);
 966
 967         for (i = 0; i < dbuf->size; ) {
 968                 de = (struct direct *)(dbuf->buf + i);
 969                 reclen = ufs_rw16(de->d_reclen, needswap);
 970                 printf(
 971             " inode %4d %7s offset %4d reclen %3d namlen %3d name %s\n",
 972                     ufs_rw32(de->d_ino, needswap),
 973                     inode_type(DTTOIF(de->d_type)), i, reclen,
 974                     de->d_namlen, de->d_name);
 975                 i += reclen;
 976                 assert(reclen > 0);
 977         }
 978 }
 979
 980 static void
 981 ffs_make_dirbuf(dirbuf_t *dbuf, const char *name, fsnode *node, int needswap)
 982 {
 983         struct direct   de, *dp;
 984         uint16_t        llen, reclen;
 985         u_char          *newbuf;
 986
 987         assert (dbuf != NULL);
 988         assert (name != NULL);
 989         assert (node != NULL);
 990                                         /* create direct entry */
 991         (void)memset(&de, 0, sizeof(de));
 992         de.d_ino = ufs_rw32(node->inode->ino, needswap);
 993         de.d_type = IFTODT(node->type);
 994         de.d_namlen = (uint8_t)strlen(name);
 995         strcpy(de.d_name, name);
 996         reclen = DIRSIZ_SWAP(0, &de, needswap);
 997         de.d_reclen = ufs_rw16(reclen, needswap);
 998
 999         dp = (struct direct *)(dbuf->buf + dbuf->cur);
1000         llen = 0;
1001         if (dp != NULL)
1002                 llen = DIRSIZ_SWAP(0, dp, needswap);
1003
1004         if (debug & DEBUG_FS_MAKE_DIRBUF)
1005                 printf(
1006                     "ffs_make_dirbuf: dbuf siz %d cur %d lastlen %d\n"
1007                     "  ino %d type %d reclen %d namlen %d name %.30s\n",
1008                     dbuf->size, dbuf->cur, llen,
1009                     ufs_rw32(de.d_ino, needswap), de.d_type, reclen,
1010                     de.d_namlen, de.d_name);
1011
1012         if (reclen + dbuf->cur + llen > roundup(dbuf->size, DIRBLKSIZ)) {
1013                 if (debug & DEBUG_FS_MAKE_DIRBUF)
1014                         printf("ffs_make_dirbuf: growing buf to %d\n",
1015                             dbuf->size + DIRBLKSIZ);
1016                 if ((newbuf = realloc(dbuf->buf, dbuf->size + DIRBLKSIZ)) == NULL)
1017                         err(1, "Allocating memory for directory buffer");
1018                 dbuf->buf = newbuf;
1019                 dbuf->size += DIRBLKSIZ;
1020                 memset(dbuf->buf + dbuf->size - DIRBLKSIZ, 0, DIRBLKSIZ);
1021                 dbuf->cur = dbuf->size - DIRBLKSIZ;
1022         } else if (dp) {                        /* shrink end of previous */
1023                 dp->d_reclen = ufs_rw16(llen,needswap);
1024                 dbuf->cur += llen;
1025         }
1026         dp = (struct direct *)(dbuf->buf + dbuf->cur);
1027         memcpy(dp, &de, reclen);
1028         dp->d_reclen = ufs_rw16(dbuf->size - dbuf->cur, needswap);
1029 }
1030
1031 /*
1032  * cribbed from sys/ufs/ffs/ffs_alloc.c
1033  */
1034 static void
1035 ffs_write_inode(union dinode *dp, uint32_t ino, const fsinfo_t *fsopts)
1036 {
1037         char            *buf;
1038         struct ufs1_dinode *dp1;
1039         struct ufs2_dinode *dp2, *dip;
1040         struct cg       *cgp;
1041         struct fs       *fs;
1042         int             cg, cgino, i;
1043         daddr_t         d;
1044         char            sbbuf[FFS_MAXBSIZE];
1045         int32_t         initediblk;
1046         ffs_opt_t       *ffs_opts = fsopts->fs_specific;
1047
1048         assert (dp != NULL);
1049         assert (ino > 0);
1050         assert (fsopts != NULL);
1051         assert (ffs_opts != NULL);
1052
1053         fs = (struct fs *)fsopts->superblock;
1054         cg = ino_to_cg(fs, ino);
1055         cgino = ino % fs->fs_ipg;
1056         if (debug & DEBUG_FS_WRITE_INODE)
1057                 printf("ffs_write_inode: din %p ino %u cg %d cgino %d\n",
1058                     dp, ino, cg, cgino);
1059
1060         ffs_rdfs(fsbtodb(fs, cgtod(fs, cg)), (int)fs->fs_cgsize, &sbbuf,
1061             fsopts);
1062         cgp = (struct cg *)sbbuf;
1063         if (!cg_chkmagic_swap(cgp, fsopts->needswap))
1064                 errx(1, "ffs_write_inode: cg %d: bad magic number", cg);
1065
1066         assert (isclr(cg_inosused_swap(cgp, fsopts->needswap), cgino));
1067
1068         buf = malloc(fs->fs_bsize);
1069         if (buf == NULL)
1070                 errx(1, "ffs_write_inode: cg %d: can't alloc inode block", cg);
1071
1072         dp1 = (struct ufs1_dinode *)buf;
1073         dp2 = (struct ufs2_dinode *)buf;
1074
1075         if (fs->fs_cstotal.cs_nifree == 0)
1076                 errx(1, "ffs_write_inode: fs out of inodes for ino %u",
1077                     ino);
1078         if (fs->fs_cs(fs, cg).cs_nifree == 0)
1079                 errx(1,
1080                     "ffs_write_inode: cg %d out of inodes for ino %u",
1081                     cg, ino);
1082         setbit(cg_inosused_swap(cgp, fsopts->needswap), cgino);
1083         ufs_add32(cgp->cg_cs.cs_nifree, -1, fsopts->needswap);
1084         fs->fs_cstotal.cs_nifree--;
1085         fs->fs_cs(fs, cg).cs_nifree--;
1086         if (S_ISDIR(DIP(dp, mode))) {
1087                 ufs_add32(cgp->cg_cs.cs_ndir, 1, fsopts->needswap);
1088                 fs->fs_cstotal.cs_ndir++;
1089                 fs->fs_cs(fs, cg).cs_ndir++;
1090         }
1091
1092         /*
1093          * Initialize inode blocks on the fly for UFS2.
1094          */
1095         initediblk = ufs_rw32(cgp->cg_initediblk, fsopts->needswap);
1096         if (ffs_opts->version == 2 && cgino + INOPB(fs) > initediblk &&
1097             initediblk < ufs_rw32(cgp->cg_niblk, fsopts->needswap)) {
1098                 memset(buf, 0, fs->fs_bsize);
1099                 dip = (struct ufs2_dinode *)buf;
1100                 srandom(time(NULL));
1101                 for (i = 0; i < INOPB(fs); i++) {
1102                         dip->di_gen = random() / 2 + 1;
1103                         dip++;
1104                 }
1105                 ffs_wtfs(fsbtodb(fs, ino_to_fsba(fs,
1106                                   cg * fs->fs_ipg + initediblk)),
1107                     fs->fs_bsize, buf, fsopts);
1108                 initediblk += INOPB(fs);
1109                 cgp->cg_initediblk = ufs_rw32(initediblk, fsopts->needswap);
1110         }
1111
1112
1113         ffs_wtfs(fsbtodb(fs, cgtod(fs, cg)), (int)fs->fs_cgsize, &sbbuf,
1114             fsopts);
1115
1116                                         /* now write inode */
1117         d = fsbtodb(fs, ino_to_fsba(fs, ino));
1118         ffs_rdfs(d, fs->fs_bsize, buf, fsopts);
1119         if (fsopts->needswap) {
1120                 if (ffs_opts->version == 1)
1121                         ffs_dinode1_swap(&dp->ffs1_din,
1122                             &dp1[ino_to_fsbo(fs, ino)]);
1123                 else
1124                         ffs_dinode2_swap(&dp->ffs2_din,
1125                             &dp2[ino_to_fsbo(fs, ino)]);
1126         } else {
1127                 if (ffs_opts->version == 1)
1128                         dp1[ino_to_fsbo(fs, ino)] = dp->ffs1_din;
1129                 else
1130                         dp2[ino_to_fsbo(fs, ino)] = dp->ffs2_din;
1131         }
1132         ffs_wtfs(d, fs->fs_bsize, buf, fsopts);
1133         free(buf);
1134 }
1135
1136 void
1137 panic(const char *fmt, ...)
1138 {
1139         va_list ap;
1140
1141         va_start(ap, fmt);
1142         vwarnx(fmt, ap);
1143         va_end(ap);
1144         exit(1);
1145 }