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 if (strcmp(var, "label") == 0) {
 240                 strlcpy(ffs_opts->label, val, sizeof(ffs_opts->label));
 241                 rv = 1;
 242         } else
 243                 rv = set_option(ffs_options, var, val);
 244
 245  leave_ffs_parse_opts:
 246         if (var)
 247                 free(var);
 248         return (rv);
 249 }
 250
 251
 252 void
 253 ffs_makefs(const char *image, const char *dir, fsnode *root, fsinfo_t *fsopts)
 254 {
 255         struct fs       *superblock;
 256         struct timeval  start;
 257
 258         assert(image != NULL);
 259         assert(dir != NULL);
 260         assert(root != NULL);
 261         assert(fsopts != NULL);
 262
 263         if (debug & DEBUG_FS_MAKEFS)
 264                 printf("ffs_makefs: image %s directory %s root %p\n",
 265                     image, dir, root);
 266
 267                 /* validate tree and options */
 268         TIMER_START(start);
 269         ffs_validate(dir, root, fsopts);
 270         TIMER_RESULTS(start, "ffs_validate");
 271
 272         printf("Calculated size of `%s': %lld bytes, %lld inodes\n",
 273             image, (long long)fsopts->size, (long long)fsopts->inodes);
 274
 275                 /* create image */
 276         TIMER_START(start);
 277         if (ffs_create_image(image, fsopts) == -1)
 278                 errx(1, "Image file `%s' not created.", image);
 279         TIMER_RESULTS(start, "ffs_create_image");
 280
 281         fsopts->curinode = ROOTINO;
 282
 283         if (debug & DEBUG_FS_MAKEFS)
 284                 putchar('\n');
 285
 286                 /* populate image */
 287         printf("Populating `%s'\n", image);
 288         TIMER_START(start);
 289         if (! ffs_populate_dir(dir, root, fsopts))
 290                 errx(1, "Image file `%s' not populated.", image);
 291         TIMER_RESULTS(start, "ffs_populate_dir");
 292
 293                 /* ensure no outstanding buffers remain */
 294         if (debug & DEBUG_FS_MAKEFS)
 295                 bcleanup();
 296
 297                 /* update various superblock parameters */
 298         superblock = fsopts->superblock;
 299         superblock->fs_fmod = 0;
 300         superblock->fs_old_cstotal.cs_ndir   = superblock->fs_cstotal.cs_ndir;
 301         superblock->fs_old_cstotal.cs_nbfree = superblock->fs_cstotal.cs_nbfree;
 302         superblock->fs_old_cstotal.cs_nifree = superblock->fs_cstotal.cs_nifree;
 303         superblock->fs_old_cstotal.cs_nffree = superblock->fs_cstotal.cs_nffree;
 304
 305                 /* write out superblock; image is now complete */
 306         ffs_write_superblock(fsopts->superblock, fsopts);
 307         if (close(fsopts->fd) == -1)
 308                 err(1, "Closing `%s'", image);
 309         fsopts->fd = -1;
 310         printf("Image `%s' complete\n", image);
 311 }
 312
 313         /* end of public functions */
 314
 315
 316 static void
 317 ffs_validate(const char *dir, fsnode *root, fsinfo_t *fsopts)
 318 {
 319         int32_t ncg = 1;
 320 #if notyet
 321         int32_t spc, nspf, ncyl, fssize;
 322 #endif
 323         ffs_opt_t       *ffs_opts = fsopts->fs_specific;
 324
 325         assert(dir != NULL);
 326         assert(root != NULL);
 327         assert(fsopts != NULL);
 328         assert(ffs_opts != NULL);
 329
 330         if (debug & DEBUG_FS_VALIDATE) {
 331                 printf("ffs_validate: before defaults set:\n");
 332                 ffs_dump_fsinfo(fsopts);
 333         }
 334
 335                 /* set FFS defaults */
 336         if (fsopts->sectorsize == -1)
 337                 fsopts->sectorsize = DFL_SECSIZE;
 338         if (ffs_opts->fsize == -1)
 339                 ffs_opts->fsize = MAX(DFL_FRAGSIZE, fsopts->sectorsize);
 340         if (ffs_opts->bsize == -1)
 341                 ffs_opts->bsize = MIN(DFL_BLKSIZE, 8 * ffs_opts->fsize);
 342         if (ffs_opts->cpg == -1)
 343                 ffs_opts->cpg = DFL_CYLSPERGROUP;
 344         else
 345                 ffs_opts->cpgflg = 1;
 346                                 /* fsopts->density is set below */
 347         if (ffs_opts->nsectors == -1)
 348                 ffs_opts->nsectors = DFL_NSECTORS;
 349         if (ffs_opts->minfree == -1)
 350                 ffs_opts->minfree = MINFREE;
 351         if (ffs_opts->optimization == -1)
 352                 ffs_opts->optimization = DEFAULTOPT;
 353         if (ffs_opts->maxcontig == -1)
 354                 ffs_opts->maxcontig =
 355                     MAX(1, MIN(MAXPHYS, FFS_MAXBSIZE) / ffs_opts->bsize);
 356         /* XXX ondisk32 */
 357         if (ffs_opts->maxbpg == -1)
 358                 ffs_opts->maxbpg = ffs_opts->bsize / sizeof(int32_t);
 359         if (ffs_opts->avgfilesize == -1)
 360                 ffs_opts->avgfilesize = AVFILESIZ;
 361         if (ffs_opts->avgfpdir == -1)
 362                 ffs_opts->avgfpdir = AFPDIR;
 363
 364                 /* calculate size of tree */
 365         ffs_size_dir(root, fsopts);
 366         fsopts->inodes += ROOTINO;              /* include first two inodes */
 367
 368         if (debug & DEBUG_FS_VALIDATE)
 369                 printf("ffs_validate: size of tree: %lld bytes, %lld inodes\n",
 370                     (long long)fsopts->size, (long long)fsopts->inodes);
 371
 372                 /* add requested slop */
 373         fsopts->size += fsopts->freeblocks;
 374         fsopts->inodes += fsopts->freefiles;
 375         if (fsopts->freefilepc > 0)
 376                 fsopts->inodes =
 377                     fsopts->inodes * (100 + fsopts->freefilepc) / 100;
 378         if (fsopts->freeblockpc > 0)
 379                 fsopts->size =
 380                     fsopts->size * (100 + fsopts->freeblockpc) / 100;
 381
 382                 /* add space needed for superblocks */
 383         /*
 384          * The old SBOFF (SBLOCK_UFS1) is used here because makefs is
 385          * typically used for small filesystems where space matters.
 386          * XXX make this an option.
 387          */
 388         fsopts->size += (SBLOCK_UFS1 + SBLOCKSIZE) * ncg;
 389                 /* add space needed to store inodes, x3 for blockmaps, etc */
 390         if (ffs_opts->version == 1)
 391                 fsopts->size += ncg * DINODE1_SIZE *
 392                     roundup(fsopts->inodes / ncg,
 393                         ffs_opts->bsize / DINODE1_SIZE);
 394         else
 395                 fsopts->size += ncg * DINODE2_SIZE *
 396                     roundup(fsopts->inodes / ncg,
 397                         ffs_opts->bsize / DINODE2_SIZE);
 398
 399                 /* add minfree */
 400         if (ffs_opts->minfree > 0)
 401                 fsopts->size =
 402                     fsopts->size * (100 + ffs_opts->minfree) / 100;
 403         /*
 404          * XXX  any other fs slop to add, such as csum's, bitmaps, etc ??
 405          */
 406
 407         if (fsopts->size < fsopts->minsize)     /* ensure meets minimum size */
 408                 fsopts->size = fsopts->minsize;
 409
 410                 /* round up to the next block */
 411         fsopts->size = roundup(fsopts->size, ffs_opts->bsize);
 412
 413                 /* calculate density if necessary */
 414         if (ffs_opts->density == -1)
 415                 ffs_opts->density = fsopts->size / fsopts->inodes + 1;
 416
 417         if (debug & DEBUG_FS_VALIDATE) {
 418                 printf("ffs_validate: after defaults set:\n");
 419                 ffs_dump_fsinfo(fsopts);
 420                 printf("ffs_validate: dir %s; %lld bytes, %lld inodes\n",
 421                     dir, (long long)fsopts->size, (long long)fsopts->inodes);
 422         }
 423         sectorsize = fsopts->sectorsize;        /* XXX - see earlier */
 424
 425                 /* now check calculated sizes vs requested sizes */
 426         if (fsopts->maxsize > 0 && fsopts->size > fsopts->maxsize) {
 427                 errx(1, "`%s' size of %lld is larger than the maxsize of %lld.",
 428                     dir, (long long)fsopts->size, (long long)fsopts->maxsize);
 429         }
 430 }
 431
 432
 433 static void
 434 ffs_dump_fsinfo(fsinfo_t *f)
 435 {
 436
 437         ffs_opt_t       *fs = f->fs_specific;
 438
 439         printf("fsopts at %p\n", f);
 440
 441         printf("\tsize %lld, inodes %lld, curinode %u\n",
 442             (long long)f->size, (long long)f->inodes, f->curinode);
 443
 444         printf("\tminsize %lld, maxsize %lld\n",
 445             (long long)f->minsize, (long long)f->maxsize);
 446         printf("\tfree files %lld, freefile %% %d\n",
 447             (long long)f->freefiles, f->freefilepc);
 448         printf("\tfree blocks %lld, freeblock %% %d\n",
 449             (long long)f->freeblocks, f->freeblockpc);
 450         printf("\tneedswap %d, sectorsize %d\n", f->needswap, f->sectorsize);
 451
 452         printf("\tbsize %d, fsize %d, cpg %d, density %d\n",
 453             fs->bsize, fs->fsize, fs->cpg, fs->density);
 454         printf("\tnsectors %d, rpm %d, minfree %d\n",
 455             fs->nsectors, fs->rpm, fs->minfree);
 456         printf("\tmaxcontig %d, maxbpg %d\n",
 457             fs->maxcontig, fs->maxbpg);
 458         printf("\toptimization %s\n",
 459             fs->optimization == FS_OPTSPACE ? "space" : "time");
 460 }
 461
 462
 463 static int
 464 ffs_create_image(const char *image, fsinfo_t *fsopts)
 465 {
 466 #if HAVE_STRUCT_STATVFS_F_IOSIZE && HAVE_FSTATVFS
 467         struct statvfs  sfs;
 468 #endif
 469         struct fs       *fs;
 470         char    *buf;
 471         int     i, bufsize;
 472         off_t   bufrem;
 473
 474         assert (image != NULL);
 475         assert (fsopts != NULL);
 476
 477                 /* create image */
 478         if ((fsopts->fd = open(image, O_RDWR | O_CREAT | O_TRUNC, 0666))
 479             == -1) {
 480                 warn("Can't open `%s' for writing", image);
 481                 return (-1);
 482         }
 483
 484                 /* zero image */
 485 #if HAVE_STRUCT_STATVFS_F_IOSIZE && HAVE_FSTATVFS
 486         if (fstatvfs(fsopts->fd, &sfs) == -1) {
 487 #endif
 488                 bufsize = 8192;
 489 #if HAVE_STRUCT_STATVFS_F_IOSIZE && HAVE_FSTATVFS
 490                 warn("can't fstatvfs `%s', using default %d byte chunk",
 491                     image, bufsize);
 492         } else
 493                 bufsize = sfs.f_iosize;
 494 #endif
 495         bufrem = fsopts->size;
 496         if (debug & DEBUG_FS_CREATE_IMAGE)
 497                 printf(
 498                     "zero-ing image `%s', %lld sectors, using %d byte chunks\n",
 499                     image, (long long)bufrem, bufsize);
 500         if ((buf = calloc(1, bufsize)) == NULL) {
 501                 warn("Can't create buffer for sector");
 502                 return (-1);
 503         }
 504         while (bufrem > 0) {
 505                 i = write(fsopts->fd, buf, MIN(bufsize, bufrem));
 506                 if (i == -1) {
 507                         warn("zeroing image, %lld bytes to go",
 508                             (long long)bufrem);
 509                         free(buf);
 510                         return (-1);
 511                 }
 512                 bufrem -= i;
 513         }
 514         free(buf);
 515
 516                 /* make the file system */
 517         if (debug & DEBUG_FS_CREATE_IMAGE)
 518                 printf("calling mkfs(\"%s\", ...)\n", image);
 519         fs = ffs_mkfs(image, fsopts);
 520         fsopts->superblock = (void *)fs;
 521         if (debug & DEBUG_FS_CREATE_IMAGE) {
 522                 time_t t;
 523
 524                 t = (time_t)((struct fs *)fsopts->superblock)->fs_time;
 525                 printf("mkfs returned %p; fs_time %s",
 526                     fsopts->superblock, ctime(&t));
 527                 printf("fs totals: nbfree %lld, nffree %lld, nifree %lld, ndir %lld\n",
 528                     (long long)fs->fs_cstotal.cs_nbfree,
 529                     (long long)fs->fs_cstotal.cs_nffree,
 530                     (long long)fs->fs_cstotal.cs_nifree,
 531                     (long long)fs->fs_cstotal.cs_ndir);
 532         }
 533
 534         if (fs->fs_cstotal.cs_nifree + ROOTINO < fsopts->inodes) {
 535                 warnx(
 536                 "Image file `%s' has %lld free inodes; %lld are required.",
 537                     image,
 538                     (long long)(fs->fs_cstotal.cs_nifree + ROOTINO),
 539                     (long long)fsopts->inodes);
 540                 return (-1);
 541         }
 542         return (fsopts->fd);
 543 }
 544
 545
 546 static void
 547 ffs_size_dir(fsnode *root, fsinfo_t *fsopts)
 548 {
 549         struct direct   tmpdir;
 550         fsnode *        node;
 551         int             curdirsize, this;
 552         ffs_opt_t       *ffs_opts = fsopts->fs_specific;
 553
 554         /* node may be NULL (empty directory) */
 555         assert(fsopts != NULL);
 556         assert(ffs_opts != NULL);
 557
 558         if (debug & DEBUG_FS_SIZE_DIR)
 559                 printf("ffs_size_dir: entry: bytes %lld inodes %lld\n",
 560                     (long long)fsopts->size, (long long)fsopts->inodes);
 561
 562 #define ADDDIRENT(e) do {                                               \
 563         tmpdir.d_namlen = strlen((e));                                  \
 564         this = DIRSIZ_SWAP(0, &tmpdir, 0);                                      \
 565         if (debug & DEBUG_FS_SIZE_DIR_ADD_DIRENT)                       \
 566                 printf("ADDDIRENT: was: %s (%d) this %d cur %d\n",      \
 567                     e, tmpdir.d_namlen, this, curdirsize);              \
 568         if (this + curdirsize > roundup(curdirsize, DIRBLKSIZ))         \
 569                 curdirsize = roundup(curdirsize, DIRBLKSIZ);            \
 570         curdirsize += this;                                             \
 571         if (debug & DEBUG_FS_SIZE_DIR_ADD_DIRENT)                       \
 572                 printf("ADDDIRENT: now: %s (%d) this %d cur %d\n",      \
 573                     e, tmpdir.d_namlen, this, curdirsize);              \
 574 } while (0);
 575
 576         /*
 577          * XXX  this needs to take into account extra space consumed
 578          *      by indirect blocks, etc.
 579          */
 580 #define ADDSIZE(x) do {                                                 \
 581         fsopts->size += roundup((x), ffs_opts->fsize);                  \
 582 } while (0);
 583
 584         curdirsize = 0;
 585         for (node = root; node != NULL; node = node->next) {
 586                 ADDDIRENT(node->name);
 587                 if (node == root) {                     /* we're at "." */
 588                         assert(strcmp(node->name, ".") == 0);
 589                         ADDDIRENT("..");
 590                 } else if ((node->inode->flags & FI_SIZED) == 0) {
 591                                 /* don't count duplicate names */
 592                         node->inode->flags |= FI_SIZED;
 593                         if (debug & DEBUG_FS_SIZE_DIR_NODE)
 594                                 printf("ffs_size_dir: `%s' size %lld\n",
 595                                     node->name,
 596                                     (long long)node->inode->st.st_size);
 597                         fsopts->inodes++;
 598                         if (node->type == S_IFREG)
 599                                 ADDSIZE(node->inode->st.st_size);
 600                         if (node->type == S_IFLNK) {
 601                                 int     slen;
 602
 603                                 slen = strlen(node->symlink) + 1;
 604                                 if (slen >= (ffs_opts->version == 1 ?
 605                                                 MAXSYMLINKLEN_UFS1 :
 606                                                 MAXSYMLINKLEN_UFS2))
 607                                         ADDSIZE(slen);
 608                         }
 609                 }
 610                 if (node->type == S_IFDIR)
 611                         ffs_size_dir(node->child, fsopts);
 612         }
 613         ADDSIZE(curdirsize);
 614
 615         if (debug & DEBUG_FS_SIZE_DIR)
 616                 printf("ffs_size_dir: exit: size %lld inodes %lld\n",
 617                     (long long)fsopts->size, (long long)fsopts->inodes);
 618 }
 619
 620 static void *
 621 ffs_build_dinode1(struct ufs1_dinode *dinp, dirbuf_t *dbufp, fsnode *cur,
 622                  fsnode *root, fsinfo_t *fsopts)
 623 {
 624         int slen;
 625         void *membuf;
 626
 627         memset(dinp, 0, sizeof(*dinp));
 628         dinp->di_mode = cur->inode->st.st_mode;
 629         dinp->di_nlink = cur->inode->nlink;
 630         dinp->di_size = cur->inode->st.st_size;
 631         dinp->di_atime = cur->inode->st.st_atime;
 632         dinp->di_mtime = cur->inode->st.st_mtime;
 633         dinp->di_ctime = cur->inode->st.st_ctime;
 634 #if HAVE_STRUCT_STAT_ST_MTIMENSEC
 635         dinp->di_atimensec = cur->inode->st.st_atimensec;
 636         dinp->di_mtimensec = cur->inode->st.st_mtimensec;
 637         dinp->di_ctimensec = cur->inode->st.st_ctimensec;
 638 #endif
 639 #if HAVE_STRUCT_STAT_ST_FLAGS
 640         dinp->di_flags = cur->inode->st.st_flags;
 641 #endif
 642 #if HAVE_STRUCT_STAT_ST_GEN
 643         dinp->di_gen = cur->inode->st.st_gen;
 644 #endif
 645         dinp->di_uid = cur->inode->st.st_uid;
 646         dinp->di_gid = cur->inode->st.st_gid;
 647                 /* not set: di_db, di_ib, di_blocks, di_spare */
 648
 649         membuf = NULL;
 650         if (cur == root) {                      /* "."; write dirbuf */
 651                 membuf = dbufp->buf;
 652                 dinp->di_size = dbufp->size;
 653         } else if (S_ISBLK(cur->type) || S_ISCHR(cur->type)) {
 654                 dinp->di_size = 0;      /* a device */
 655                 dinp->di_rdev =
 656                     ufs_rw32(cur->inode->st.st_rdev, fsopts->needswap);
 657         } else if (S_ISLNK(cur->type)) {        /* symlink */
 658                 slen = strlen(cur->symlink);
 659                 if (slen < MAXSYMLINKLEN_UFS1) {        /* short link */
 660                         memcpy(dinp->di_db, cur->symlink, slen);
 661                 } else
 662                         membuf = cur->symlink;
 663                 dinp->di_size = slen;
 664         }
 665         return membuf;
 666 }
 667
 668 static void *
 669 ffs_build_dinode2(struct ufs2_dinode *dinp, dirbuf_t *dbufp, fsnode *cur,
 670                  fsnode *root, fsinfo_t *fsopts)
 671 {
 672         int slen;
 673         void *membuf;
 674
 675         memset(dinp, 0, sizeof(*dinp));
 676         dinp->di_mode = cur->inode->st.st_mode;
 677         dinp->di_nlink = cur->inode->nlink;
 678         dinp->di_size = cur->inode->st.st_size;
 679         dinp->di_atime = cur->inode->st.st_atime;
 680         dinp->di_mtime = cur->inode->st.st_mtime;
 681         dinp->di_ctime = cur->inode->st.st_ctime;
 682 #if HAVE_STRUCT_STAT_ST_MTIMENSEC
 683         dinp->di_atimensec = cur->inode->st.st_atimensec;
 684         dinp->di_mtimensec = cur->inode->st.st_mtimensec;
 685         dinp->di_ctimensec = cur->inode->st.st_ctimensec;
 686 #endif
 687 #if HAVE_STRUCT_STAT_ST_FLAGS
 688         dinp->di_flags = cur->inode->st.st_flags;
 689 #endif
 690 #if HAVE_STRUCT_STAT_ST_GEN
 691         dinp->di_gen = cur->inode->st.st_gen;
 692 #endif
 693 #if HAVE_STRUCT_STAT_BIRTHTIME
 694         dinp->di_birthtime = cur->inode->st.st_birthtime;
 695         dinp->di_birthnsec = cur->inode->st.st_birthtimensec;
 696 #endif
 697         dinp->di_uid = cur->inode->st.st_uid;
 698         dinp->di_gid = cur->inode->st.st_gid;
 699                 /* not set: di_db, di_ib, di_blocks, di_spare */
 700
 701         membuf = NULL;
 702         if (cur == root) {                      /* "."; write dirbuf */
 703                 membuf = dbufp->buf;
 704                 dinp->di_size = dbufp->size;
 705         } else if (S_ISBLK(cur->type) || S_ISCHR(cur->type)) {
 706                 dinp->di_size = 0;      /* a device */
 707                 dinp->di_rdev =
 708                     ufs_rw64(cur->inode->st.st_rdev, fsopts->needswap);
 709         } else if (S_ISLNK(cur->type)) {        /* symlink */
 710                 slen = strlen(cur->symlink);
 711                 if (slen < MAXSYMLINKLEN_UFS2) {        /* short link */
 712                         memcpy(dinp->di_db, cur->symlink, slen);
 713                 } else
 714                         membuf = cur->symlink;
 715                 dinp->di_size = slen;
 716         }
 717         return membuf;
 718 }
 719
 720 static int
 721 ffs_populate_dir(const char *dir, fsnode *root, fsinfo_t *fsopts)
 722 {
 723         fsnode          *cur;
 724         dirbuf_t        dirbuf;
 725         union dinode    din;
 726         void            *membuf;
 727         char            path[MAXPATHLEN + 1];
 728         ffs_opt_t       *ffs_opts = fsopts->fs_specific;
 729
 730         assert(dir != NULL);
 731         assert(root != NULL);
 732         assert(fsopts != NULL);
 733         assert(ffs_opts != NULL);
 734
 735         (void)memset(&dirbuf, 0, sizeof(dirbuf));
 736
 737         if (debug & DEBUG_FS_POPULATE)
 738                 printf("ffs_populate_dir: PASS 1  dir %s node %p\n", dir, root);
 739
 740                 /*
 741                  * pass 1: allocate inode numbers, build directory `file'
 742                  */
 743         for (cur = root; cur != NULL; cur = cur->next) {
 744                 if ((cur->inode->flags & FI_ALLOCATED) == 0) {
 745                         cur->inode->flags |= FI_ALLOCATED;
 746                         if (cur == root && cur->parent != NULL)
 747                                 cur->inode->ino = cur->parent->inode->ino;
 748                         else {
 749                                 cur->inode->ino = fsopts->curinode;
 750                                 fsopts->curinode++;
 751                         }
 752                 }
 753                 ffs_make_dirbuf(&dirbuf, cur->name, cur, fsopts->needswap);
 754                 if (cur == root) {              /* we're at "."; add ".." */
 755                         ffs_make_dirbuf(&dirbuf, "..",
 756                             cur->parent == NULL ? cur : cur->parent->first,
 757                             fsopts->needswap);
 758                         root->inode->nlink++;   /* count my parent's link */
 759                 } else if (cur->child != NULL)
 760                         root->inode->nlink++;   /* count my child's link */
 761
 762                 /*
 763                  * XXX  possibly write file and long symlinks here,
 764                  *      ensuring that blocks get written before inodes?
 765                  *      otoh, this isn't a real filesystem, so who
 766                  *      cares about ordering? :-)
 767                  */
 768         }
 769         if (debug & DEBUG_FS_POPULATE_DIRBUF)
 770                 ffs_dump_dirbuf(&dirbuf, dir, fsopts->needswap);
 771
 772                 /*
 773                  * pass 2: write out dirbuf, then non-directories at this level
 774                  */
 775         if (debug & DEBUG_FS_POPULATE)
 776                 printf("ffs_populate_dir: PASS 2  dir %s\n", dir);
 777         for (cur = root; cur != NULL; cur = cur->next) {
 778                 if (cur->inode->flags & FI_WRITTEN)
 779                         continue;               /* skip hard-linked entries */
 780                 cur->inode->flags |= FI_WRITTEN;
 781
 782                 if (cur->contents == NULL) {
 783                         if (snprintf(path, sizeof(path), "%s/%s", dir,
 784                             cur->name) >= sizeof(path))
 785                                 errx(1, "Pathname too long.");
 786                 }
 787
 788                 if (cur->child != NULL)
 789                         continue;               /* child creates own inode */
 790
 791                                 /* build on-disk inode */
 792                 if (ffs_opts->version == 1)
 793                         membuf = ffs_build_dinode1(&din.ffs1_din, &dirbuf, cur,
 794                             root, fsopts);
 795                 else
 796                         membuf = ffs_build_dinode2(&din.ffs2_din, &dirbuf, cur,
 797                             root, fsopts);
 798
 799                 if (debug & DEBUG_FS_POPULATE_NODE) {
 800                         printf("ffs_populate_dir: writing ino %d, %s",
 801                             cur->inode->ino, inode_type(cur->type));
 802                         if (cur->inode->nlink > 1)
 803                                 printf(", nlink %d", cur->inode->nlink);
 804                         putchar('\n');
 805                 }
 806
 807                 if (membuf != NULL) {
 808                         ffs_write_file(&din, cur->inode->ino, membuf, fsopts);
 809                 } else if (S_ISREG(cur->type)) {
 810                         ffs_write_file(&din, cur->inode->ino,
 811                             (cur->contents) ?  cur->contents : path, fsopts);
 812                 } else {
 813                         assert (! S_ISDIR(cur->type));
 814                         ffs_write_inode(&din, cur->inode->ino, fsopts);
 815                 }
 816         }
 817
 818                 /*
 819                  * pass 3: write out sub-directories
 820                  */
 821         if (debug & DEBUG_FS_POPULATE)
 822                 printf("ffs_populate_dir: PASS 3  dir %s\n", dir);
 823         for (cur = root; cur != NULL; cur = cur->next) {
 824                 if (cur->child == NULL)
 825                         continue;
 826                 if (snprintf(path, sizeof(path), "%s/%s", dir, cur->name)
 827                     >= sizeof(path))
 828                         errx(1, "Pathname too long.");
 829                 if (! ffs_populate_dir(path, cur->child, fsopts))
 830                         return (0);
 831         }
 832
 833         if (debug & DEBUG_FS_POPULATE)
 834                 printf("ffs_populate_dir: DONE dir %s\n", dir);
 835
 836                 /* cleanup */
 837         if (dirbuf.buf != NULL)
 838                 free(dirbuf.buf);
 839         return (1);
 840 }
 841
 842
 843 static void
 844 ffs_write_file(union dinode *din, uint32_t ino, void *buf, fsinfo_t *fsopts)
 845 {
 846         int     isfile, ffd;
 847         char    *fbuf, *p;
 848         off_t   bufleft, chunk, offset;
 849         ssize_t nread;
 850         struct inode    in;
 851         struct buf *    bp;
 852         ffs_opt_t       *ffs_opts = fsopts->fs_specific;
 853
 854         assert (din != NULL);
 855         assert (buf != NULL);
 856         assert (fsopts != NULL);
 857         assert (ffs_opts != NULL);
 858
 859         isfile = S_ISREG(DIP(din, mode));
 860         fbuf = NULL;
 861         ffd = -1;
 862         p = NULL;
 863
 864         in.i_fs = (struct fs *)fsopts->superblock;
 865
 866         if (debug & DEBUG_FS_WRITE_FILE) {
 867                 printf(
 868                     "ffs_write_file: ino %u, din %p, isfile %d, %s, size %lld",
 869                     ino, din, isfile, inode_type(DIP(din, mode) & S_IFMT),
 870                     (long long)DIP(din, size));
 871                 if (isfile)
 872                         printf(", file '%s'\n", (char *)buf);
 873                 else
 874                         printf(", buffer %p\n", buf);
 875         }
 876
 877         in.i_number = ino;
 878         in.i_size = DIP(din, size);
 879         if (ffs_opts->version == 1)
 880                 memcpy(&in.i_din.ffs1_din, &din->ffs1_din,
 881                     sizeof(in.i_din.ffs1_din));
 882         else
 883                 memcpy(&in.i_din.ffs2_din, &din->ffs2_din,
 884                     sizeof(in.i_din.ffs2_din));
 885         in.i_fd = fsopts->fd;
 886
 887         if (DIP(din, size) == 0)
 888                 goto write_inode_and_leave;             /* mmm, cheating */
 889
 890         if (isfile) {
 891                 if ((fbuf = malloc(ffs_opts->bsize)) == NULL)
 892                         err(1, "Allocating memory for write buffer");
 893                 if ((ffd = open((char *)buf, O_RDONLY, 0444)) == -1) {
 894                         warn("Can't open `%s' for reading", (char *)buf);
 895                         goto leave_ffs_write_file;
 896                 }
 897         } else {
 898                 p = buf;
 899         }
 900
 901         chunk = 0;
 902         for (bufleft = DIP(din, size); bufleft > 0; bufleft -= chunk) {
 903                 chunk = MIN(bufleft, ffs_opts->bsize);
 904                 if (!isfile)
 905                         ;
 906                 else if ((nread = read(ffd, fbuf, chunk)) == -1)
 907                         err(EXIT_FAILURE, "Reading `%s', %lld bytes to go",
 908                             (char *)buf, (long long)bufleft);
 909                 else if (nread != chunk)
 910                         errx(EXIT_FAILURE, "Reading `%s', %lld bytes to go, "
 911                             "read %zd bytes, expected %ju bytes, does "
 912                             "metalog size= attribute mismatch source size?",
 913                             (char *)buf, (long long)bufleft, nread,
 914                             (uintmax_t)chunk);
 915                 else
 916                         p = fbuf;
 917                 offset = DIP(din, size) - bufleft;
 918                 if (debug & DEBUG_FS_WRITE_FILE_BLOCK)
 919                         printf(
 920                 "ffs_write_file: write %p offset %lld size %lld left %lld\n",
 921                             p, (long long)offset,
 922                             (long long)chunk, (long long)bufleft);
 923         /*
 924          * XXX  if holey support is desired, do the check here
 925          *
 926          * XXX  might need to write out last bit in fragroundup
 927          *      sized chunk. however, ffs_balloc() handles this for us
 928          */
 929                 errno = ffs_balloc(&in, offset, chunk, &bp);
 930  bad_ffs_write_file:
 931                 if (errno != 0)
 932                         err(1,
 933                             "Writing inode %d (%s), bytes %lld + %lld",
 934                             ino,
 935                             isfile ? (char *)buf :
 936                               inode_type(DIP(din, mode) & S_IFMT),
 937                             (long long)offset, (long long)chunk);
 938                 memcpy(bp->b_data, p, chunk);
 939                 errno = bwrite(bp);
 940                 if (errno != 0)
 941                         goto bad_ffs_write_file;
 942                 brelse(bp);
 943                 if (!isfile)
 944                         p += chunk;
 945         }
 946
 947  write_inode_and_leave:
 948         ffs_write_inode(&in.i_din, in.i_number, fsopts);
 949
 950  leave_ffs_write_file:
 951         if (fbuf)
 952                 free(fbuf);
 953         if (ffd != -1)
 954                 close(ffd);
 955 }
 956
 957
 958 static void
 959 ffs_dump_dirbuf(dirbuf_t *dbuf, const char *dir, int needswap)
 960 {
 961         doff_t          i;
 962         struct direct   *de;
 963         uint16_t        reclen;
 964
 965         assert (dbuf != NULL);
 966         assert (dir != NULL);
 967         printf("ffs_dump_dirbuf: dir %s size %d cur %d\n",
 968             dir, dbuf->size, dbuf->cur);
 969
 970         for (i = 0; i < dbuf->size; ) {
 971                 de = (struct direct *)(dbuf->buf + i);
 972                 reclen = ufs_rw16(de->d_reclen, needswap);
 973                 printf(
 974             " inode %4d %7s offset %4d reclen %3d namlen %3d name %s\n",
 975                     ufs_rw32(de->d_ino, needswap),
 976                     inode_type(DTTOIF(de->d_type)), i, reclen,
 977                     de->d_namlen, de->d_name);
 978                 i += reclen;
 979                 assert(reclen > 0);
 980         }
 981 }
 982
 983 static void
 984 ffs_make_dirbuf(dirbuf_t *dbuf, const char *name, fsnode *node, int needswap)
 985 {
 986         struct direct   de, *dp;
 987         uint16_t        llen, reclen;
 988         u_char          *newbuf;
 989
 990         assert (dbuf != NULL);
 991         assert (name != NULL);
 992         assert (node != NULL);
 993                                         /* create direct entry */
 994         (void)memset(&de, 0, sizeof(de));
 995         de.d_ino = ufs_rw32(node->inode->ino, needswap);
 996         de.d_type = IFTODT(node->type);
 997         de.d_namlen = (uint8_t)strlen(name);
 998         strcpy(de.d_name, name);
 999         reclen = DIRSIZ_SWAP(0, &de, needswap);
1000         de.d_reclen = ufs_rw16(reclen, needswap);
1001
1002         dp = (struct direct *)(dbuf->buf + dbuf->cur);
1003         llen = 0;
1004         if (dp != NULL)
1005                 llen = DIRSIZ_SWAP(0, dp, needswap);
1006
1007         if (debug & DEBUG_FS_MAKE_DIRBUF)
1008                 printf(
1009                     "ffs_make_dirbuf: dbuf siz %d cur %d lastlen %d\n"
1010                     "  ino %d type %d reclen %d namlen %d name %.30s\n",
1011                     dbuf->size, dbuf->cur, llen,
1012                     ufs_rw32(de.d_ino, needswap), de.d_type, reclen,
1013                     de.d_namlen, de.d_name);
1014
1015         if (reclen + dbuf->cur + llen > roundup(dbuf->size, DIRBLKSIZ)) {
1016                 if (debug & DEBUG_FS_MAKE_DIRBUF)
1017                         printf("ffs_make_dirbuf: growing buf to %d\n",
1018                             dbuf->size + DIRBLKSIZ);
1019                 if ((newbuf = realloc(dbuf->buf, dbuf->size + DIRBLKSIZ)) == NULL)
1020                         err(1, "Allocating memory for directory buffer");
1021                 dbuf->buf = newbuf;
1022                 dbuf->size += DIRBLKSIZ;
1023                 memset(dbuf->buf + dbuf->size - DIRBLKSIZ, 0, DIRBLKSIZ);
1024                 dbuf->cur = dbuf->size - DIRBLKSIZ;
1025         } else if (dp) {                        /* shrink end of previous */
1026                 dp->d_reclen = ufs_rw16(llen,needswap);
1027                 dbuf->cur += llen;
1028         }
1029         dp = (struct direct *)(dbuf->buf + dbuf->cur);
1030         memcpy(dp, &de, reclen);
1031         dp->d_reclen = ufs_rw16(dbuf->size - dbuf->cur, needswap);
1032 }
1033
1034 /*
1035  * cribbed from sys/ufs/ffs/ffs_alloc.c
1036  */
1037 static void
1038 ffs_write_inode(union dinode *dp, uint32_t ino, const fsinfo_t *fsopts)
1039 {
1040         char            *buf;
1041         struct ufs1_dinode *dp1;
1042         struct ufs2_dinode *dp2, *dip;
1043         struct cg       *cgp;
1044         struct fs       *fs;
1045         int             cg, cgino, i;
1046         daddr_t         d;
1047         char            sbbuf[FFS_MAXBSIZE];
1048         int32_t         initediblk;
1049         ffs_opt_t       *ffs_opts = fsopts->fs_specific;
1050
1051         assert (dp != NULL);
1052         assert (ino > 0);
1053         assert (fsopts != NULL);
1054         assert (ffs_opts != NULL);
1055
1056         fs = (struct fs *)fsopts->superblock;
1057         cg = ino_to_cg(fs, ino);
1058         cgino = ino % fs->fs_ipg;
1059         if (debug & DEBUG_FS_WRITE_INODE)
1060                 printf("ffs_write_inode: din %p ino %u cg %d cgino %d\n",
1061                     dp, ino, cg, cgino);
1062
1063         ffs_rdfs(fsbtodb(fs, cgtod(fs, cg)), (int)fs->fs_cgsize, &sbbuf,
1064             fsopts);
1065         cgp = (struct cg *)sbbuf;
1066         if (!cg_chkmagic_swap(cgp, fsopts->needswap))
1067                 errx(1, "ffs_write_inode: cg %d: bad magic number", cg);
1068
1069         assert (isclr(cg_inosused_swap(cgp, fsopts->needswap), cgino));
1070
1071         buf = malloc(fs->fs_bsize);
1072         if (buf == NULL)
1073                 errx(1, "ffs_write_inode: cg %d: can't alloc inode block", cg);
1074
1075         dp1 = (struct ufs1_dinode *)buf;
1076         dp2 = (struct ufs2_dinode *)buf;
1077
1078         if (fs->fs_cstotal.cs_nifree == 0)
1079                 errx(1, "ffs_write_inode: fs out of inodes for ino %u",
1080                     ino);
1081         if (fs->fs_cs(fs, cg).cs_nifree == 0)
1082                 errx(1,
1083                     "ffs_write_inode: cg %d out of inodes for ino %u",
1084                     cg, ino);
1085         setbit(cg_inosused_swap(cgp, fsopts->needswap), cgino);
1086         ufs_add32(cgp->cg_cs.cs_nifree, -1, fsopts->needswap);
1087         fs->fs_cstotal.cs_nifree--;
1088         fs->fs_cs(fs, cg).cs_nifree--;
1089         if (S_ISDIR(DIP(dp, mode))) {
1090                 ufs_add32(cgp->cg_cs.cs_ndir, 1, fsopts->needswap);
1091                 fs->fs_cstotal.cs_ndir++;
1092                 fs->fs_cs(fs, cg).cs_ndir++;
1093         }
1094
1095         /*
1096          * Initialize inode blocks on the fly for UFS2.
1097          */
1098         initediblk = ufs_rw32(cgp->cg_initediblk, fsopts->needswap);
1099         if (ffs_opts->version == 2 && cgino + INOPB(fs) > initediblk &&
1100             initediblk < ufs_rw32(cgp->cg_niblk, fsopts->needswap)) {
1101                 memset(buf, 0, fs->fs_bsize);
1102                 dip = (struct ufs2_dinode *)buf;
1103                 srandom(time(NULL));
1104                 for (i = 0; i < INOPB(fs); i++) {
1105                         dip->di_gen = random() / 2 + 1;
1106                         dip++;
1107                 }
1108                 ffs_wtfs(fsbtodb(fs, ino_to_fsba(fs,
1109                                   cg * fs->fs_ipg + initediblk)),
1110                     fs->fs_bsize, buf, fsopts);
1111                 initediblk += INOPB(fs);
1112                 cgp->cg_initediblk = ufs_rw32(initediblk, fsopts->needswap);
1113         }
1114
1115
1116         ffs_wtfs(fsbtodb(fs, cgtod(fs, cg)), (int)fs->fs_cgsize, &sbbuf,
1117             fsopts);
1118
1119                                         /* now write inode */
1120         d = fsbtodb(fs, ino_to_fsba(fs, ino));
1121         ffs_rdfs(d, fs->fs_bsize, buf, fsopts);
1122         if (fsopts->needswap) {
1123                 if (ffs_opts->version == 1)
1124                         ffs_dinode1_swap(&dp->ffs1_din,
1125                             &dp1[ino_to_fsbo(fs, ino)]);
1126                 else
1127                         ffs_dinode2_swap(&dp->ffs2_din,
1128                             &dp2[ino_to_fsbo(fs, ino)]);
1129         } else {
1130                 if (ffs_opts->version == 1)
1131                         dp1[ino_to_fsbo(fs, ino)] = dp->ffs1_din;
1132                 else
1133                         dp2[ino_to_fsbo(fs, ino)] = dp->ffs2_din;
1134         }
1135         ffs_wtfs(d, fs->fs_bsize, buf, fsopts);
1136         free(buf);
1137 }
1138
1139 void
1140 panic(const char *fmt, ...)
1141 {
1142         va_list ap;
1143
1144         va_start(ap, fmt);
1145         vwarnx(fmt, ap);
1146         va_end(ap);
1147         exit(1);
1148 }