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         /* publicly 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                 { "maxbpg",     &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         if (fsopts->maxsize > 0 &&
 365             roundup(fsopts->minsize, ffs_opts->bsize) > fsopts->maxsize)
 366                 errx(1, "`%s' minsize of %lld rounded up to ffs bsize of %d "
 367                     "exceeds maxsize %lld.  Lower bsize, or round the minimum "
 368                     "and maximum sizes to bsize.", dir,
 369                     (long long)fsopts->minsize, ffs_opts->bsize,
 370                     (long long)fsopts->maxsize);
 371
 372                 /* calculate size of tree */
 373         ffs_size_dir(root, fsopts);
 374         fsopts->inodes += ROOTINO;              /* include first two inodes */
 375
 376         if (debug & DEBUG_FS_VALIDATE)
 377                 printf("ffs_validate: size of tree: %lld bytes, %lld inodes\n",
 378                     (long long)fsopts->size, (long long)fsopts->inodes);
 379
 380                 /* add requested slop */
 381         fsopts->size += fsopts->freeblocks;
 382         fsopts->inodes += fsopts->freefiles;
 383         if (fsopts->freefilepc > 0)
 384                 fsopts->inodes =
 385                     fsopts->inodes * (100 + fsopts->freefilepc) / 100;
 386         if (fsopts->freeblockpc > 0)
 387                 fsopts->size =
 388                     fsopts->size * (100 + fsopts->freeblockpc) / 100;
 389
 390                 /* add space needed for superblocks */
 391         /*
 392          * The old SBOFF (SBLOCK_UFS1) is used here because makefs is
 393          * typically used for small filesystems where space matters.
 394          * XXX make this an option.
 395          */
 396         fsopts->size += (SBLOCK_UFS1 + SBLOCKSIZE) * ncg;
 397                 /* add space needed to store inodes, x3 for blockmaps, etc */
 398         if (ffs_opts->version == 1)
 399                 fsopts->size += ncg * DINODE1_SIZE *
 400                     roundup(fsopts->inodes / ncg,
 401                         ffs_opts->bsize / DINODE1_SIZE);
 402         else
 403                 fsopts->size += ncg * DINODE2_SIZE *
 404                     roundup(fsopts->inodes / ncg,
 405                         ffs_opts->bsize / DINODE2_SIZE);
 406
 407                 /* add minfree */
 408         if (ffs_opts->minfree > 0)
 409                 fsopts->size =
 410                     fsopts->size * (100 + ffs_opts->minfree) / 100;
 411         /*
 412          * XXX  any other fs slop to add, such as csum's, bitmaps, etc ??
 413          */
 414
 415         if (fsopts->size < fsopts->minsize)     /* ensure meets minimum size */
 416                 fsopts->size = fsopts->minsize;
 417
 418                 /* round up to the next block */
 419         fsopts->size = roundup(fsopts->size, ffs_opts->bsize);
 420
 421                 /* round up to requested block size, if any */
 422         if (fsopts->roundup > 0)
 423                 fsopts->size = roundup(fsopts->size, fsopts->roundup);
 424
 425                 /* calculate density if necessary */
 426         if (ffs_opts->density == -1)
 427                 ffs_opts->density = fsopts->size / fsopts->inodes + 1;
 428
 429         if (debug & DEBUG_FS_VALIDATE) {
 430                 printf("ffs_validate: after defaults set:\n");
 431                 ffs_dump_fsinfo(fsopts);
 432                 printf("ffs_validate: dir %s; %lld bytes, %lld inodes\n",
 433                     dir, (long long)fsopts->size, (long long)fsopts->inodes);
 434         }
 435         sectorsize = fsopts->sectorsize;        /* XXX - see earlier */
 436
 437                 /* now check calculated sizes vs requested sizes */
 438         if (fsopts->maxsize > 0 && fsopts->size > fsopts->maxsize) {
 439                 errx(1, "`%s' size of %lld is larger than the maxsize of %lld.",
 440                     dir, (long long)fsopts->size, (long long)fsopts->maxsize);
 441         }
 442 }
 443
 444
 445 static void
 446 ffs_dump_fsinfo(fsinfo_t *f)
 447 {
 448
 449         ffs_opt_t       *fs = f->fs_specific;
 450
 451         printf("fsopts at %p\n", f);
 452
 453         printf("\tsize %lld, inodes %lld, curinode %u\n",
 454             (long long)f->size, (long long)f->inodes, f->curinode);
 455
 456         printf("\tminsize %lld, maxsize %lld\n",
 457             (long long)f->minsize, (long long)f->maxsize);
 458         printf("\tfree files %lld, freefile %% %d\n",
 459             (long long)f->freefiles, f->freefilepc);
 460         printf("\tfree blocks %lld, freeblock %% %d\n",
 461             (long long)f->freeblocks, f->freeblockpc);
 462         printf("\tneedswap %d, sectorsize %d\n", f->needswap, f->sectorsize);
 463
 464         printf("\tbsize %d, fsize %d, cpg %d, density %d\n",
 465             fs->bsize, fs->fsize, fs->cpg, fs->density);
 466         printf("\tnsectors %d, rpm %d, minfree %d\n",
 467             fs->nsectors, fs->rpm, fs->minfree);
 468         printf("\tmaxcontig %d, maxbpg %d\n",
 469             fs->maxcontig, fs->maxbpg);
 470         printf("\toptimization %s\n",
 471             fs->optimization == FS_OPTSPACE ? "space" : "time");
 472 }
 473
 474
 475 static int
 476 ffs_create_image(const char *image, fsinfo_t *fsopts)
 477 {
 478 #if HAVE_STRUCT_STATVFS_F_IOSIZE && HAVE_FSTATVFS
 479         struct statvfs  sfs;
 480 #endif
 481         struct fs       *fs;
 482         char    *buf;
 483         int     i, bufsize;
 484         off_t   bufrem;
 485
 486         assert (image != NULL);
 487         assert (fsopts != NULL);
 488
 489                 /* create image */
 490         if ((fsopts->fd = open(image, O_RDWR | O_CREAT | O_TRUNC, 0666))
 491             == -1) {
 492                 warn("Can't open `%s' for writing", image);
 493                 return (-1);
 494         }
 495
 496                 /* zero image */
 497 #if HAVE_STRUCT_STATVFS_F_IOSIZE && HAVE_FSTATVFS
 498         if (fstatvfs(fsopts->fd, &sfs) == -1) {
 499 #endif
 500                 bufsize = 8192;
 501 #if HAVE_STRUCT_STATVFS_F_IOSIZE && HAVE_FSTATVFS
 502                 warn("can't fstatvfs `%s', using default %d byte chunk",
 503                     image, bufsize);
 504         } else
 505                 bufsize = sfs.f_iosize;
 506 #endif
 507         bufrem = fsopts->size;
 508         if (fsopts->sparse) {
 509                 if (ftruncate(fsopts->fd, bufrem) == -1) {
 510                         warn("sparse option disabled.\n");
 511                         fsopts->sparse = 0;
 512                 }
 513         }
 514         if (fsopts->sparse) {
 515                 /* File truncated at bufrem. Remaining is 0 */
 516                 bufrem = 0;
 517                 buf = NULL;
 518         } else {
 519                 if (debug & DEBUG_FS_CREATE_IMAGE)
 520                         printf("zero-ing image `%s', %lld sectors, "
 521                             "using %d byte chunks\n", image, (long long)bufrem,
 522                             bufsize);
 523                 if ((buf = calloc(1, bufsize)) == NULL) {
 524                         warn("Can't create buffer for sector");
 525                         return (-1);
 526                 }
 527         }
 528         while (bufrem > 0) {
 529                 i = write(fsopts->fd, buf, MIN(bufsize, bufrem));
 530                 if (i == -1) {
 531                         warn("zeroing image, %lld bytes to go",
 532                             (long long)bufrem);
 533                         free(buf);
 534                         return (-1);
 535                 }
 536                 bufrem -= i;
 537         }
 538         if (buf)
 539                 free(buf);
 540
 541                 /* make the file system */
 542         if (debug & DEBUG_FS_CREATE_IMAGE)
 543                 printf("calling mkfs(\"%s\", ...)\n", image);
 544         fs = ffs_mkfs(image, fsopts);
 545         fsopts->superblock = (void *)fs;
 546         if (debug & DEBUG_FS_CREATE_IMAGE) {
 547                 time_t t;
 548
 549                 t = (time_t)((struct fs *)fsopts->superblock)->fs_time;
 550                 printf("mkfs returned %p; fs_time %s",
 551                     fsopts->superblock, ctime(&t));
 552                 printf("fs totals: nbfree %lld, nffree %lld, nifree %lld, ndir %lld\n",
 553                     (long long)fs->fs_cstotal.cs_nbfree,
 554                     (long long)fs->fs_cstotal.cs_nffree,
 555                     (long long)fs->fs_cstotal.cs_nifree,
 556                     (long long)fs->fs_cstotal.cs_ndir);
 557         }
 558
 559         if (fs->fs_cstotal.cs_nifree + ROOTINO < fsopts->inodes) {
 560                 warnx(
 561                 "Image file `%s' has %lld free inodes; %lld are required.",
 562                     image,
 563                     (long long)(fs->fs_cstotal.cs_nifree + ROOTINO),
 564                     (long long)fsopts->inodes);
 565                 return (-1);
 566         }
 567         return (fsopts->fd);
 568 }
 569
 570
 571 static void
 572 ffs_size_dir(fsnode *root, fsinfo_t *fsopts)
 573 {
 574         struct direct   tmpdir;
 575         fsnode *        node;
 576         int             curdirsize, this;
 577         ffs_opt_t       *ffs_opts = fsopts->fs_specific;
 578
 579         /* node may be NULL (empty directory) */
 580         assert(fsopts != NULL);
 581         assert(ffs_opts != NULL);
 582
 583         if (debug & DEBUG_FS_SIZE_DIR)
 584                 printf("ffs_size_dir: entry: bytes %lld inodes %lld\n",
 585                     (long long)fsopts->size, (long long)fsopts->inodes);
 586
 587 #define ADDDIRENT(e) do {                                               \
 588         tmpdir.d_namlen = strlen((e));                                  \
 589         this = DIRSIZ_SWAP(0, &tmpdir, 0);                                      \
 590         if (debug & DEBUG_FS_SIZE_DIR_ADD_DIRENT)                       \
 591                 printf("ADDDIRENT: was: %s (%d) this %d cur %d\n",      \
 592                     e, tmpdir.d_namlen, this, curdirsize);              \
 593         if (this + curdirsize > roundup(curdirsize, DIRBLKSIZ))         \
 594                 curdirsize = roundup(curdirsize, DIRBLKSIZ);            \
 595         curdirsize += this;                                             \
 596         if (debug & DEBUG_FS_SIZE_DIR_ADD_DIRENT)                       \
 597                 printf("ADDDIRENT: now: %s (%d) this %d cur %d\n",      \
 598                     e, tmpdir.d_namlen, this, curdirsize);              \
 599 } while (0);
 600
 601         /*
 602          * XXX  this needs to take into account extra space consumed
 603          *      by indirect blocks, etc.
 604          */
 605 #define ADDSIZE(x) do {                                                 \
 606         fsopts->size += roundup((x), ffs_opts->fsize);                  \
 607 } while (0);
 608
 609         curdirsize = 0;
 610         for (node = root; node != NULL; node = node->next) {
 611                 ADDDIRENT(node->name);
 612                 if (node == root) {                     /* we're at "." */
 613                         assert(strcmp(node->name, ".") == 0);
 614                         ADDDIRENT("..");
 615                 } else if ((node->inode->flags & FI_SIZED) == 0) {
 616                                 /* don't count duplicate names */
 617                         node->inode->flags |= FI_SIZED;
 618                         if (debug & DEBUG_FS_SIZE_DIR_NODE)
 619                                 printf("ffs_size_dir: `%s' size %lld\n",
 620                                     node->name,
 621                                     (long long)node->inode->st.st_size);
 622                         fsopts->inodes++;
 623                         if (node->type == S_IFREG)
 624                                 ADDSIZE(node->inode->st.st_size);
 625                         if (node->type == S_IFLNK) {
 626                                 int     slen;
 627
 628                                 slen = strlen(node->symlink) + 1;
 629                                 if (slen >= (ffs_opts->version == 1 ?
 630                                                 MAXSYMLINKLEN_UFS1 :
 631                                                 MAXSYMLINKLEN_UFS2))
 632                                         ADDSIZE(slen);
 633                         }
 634                 }
 635                 if (node->type == S_IFDIR)
 636                         ffs_size_dir(node->child, fsopts);
 637         }
 638         ADDSIZE(curdirsize);
 639
 640         if (debug & DEBUG_FS_SIZE_DIR)
 641                 printf("ffs_size_dir: exit: size %lld inodes %lld\n",
 642                     (long long)fsopts->size, (long long)fsopts->inodes);
 643 }
 644
 645 static void *
 646 ffs_build_dinode1(struct ufs1_dinode *dinp, dirbuf_t *dbufp, fsnode *cur,
 647                  fsnode *root, fsinfo_t *fsopts)
 648 {
 649         int slen;
 650         void *membuf;
 651
 652         memset(dinp, 0, sizeof(*dinp));
 653         dinp->di_mode = cur->inode->st.st_mode;
 654         dinp->di_nlink = cur->inode->nlink;
 655         dinp->di_size = cur->inode->st.st_size;
 656         dinp->di_atime = cur->inode->st.st_atime;
 657         dinp->di_mtime = cur->inode->st.st_mtime;
 658         dinp->di_ctime = cur->inode->st.st_ctime;
 659 #if HAVE_STRUCT_STAT_ST_MTIMENSEC
 660         dinp->di_atimensec = cur->inode->st.st_atimensec;
 661         dinp->di_mtimensec = cur->inode->st.st_mtimensec;
 662         dinp->di_ctimensec = cur->inode->st.st_ctimensec;
 663 #endif
 664 #if HAVE_STRUCT_STAT_ST_FLAGS
 665         dinp->di_flags = cur->inode->st.st_flags;
 666 #endif
 667 #if HAVE_STRUCT_STAT_ST_GEN
 668         dinp->di_gen = cur->inode->st.st_gen;
 669 #endif
 670         dinp->di_uid = cur->inode->st.st_uid;
 671         dinp->di_gid = cur->inode->st.st_gid;
 672                 /* not set: di_db, di_ib, di_blocks, di_spare */
 673
 674         membuf = NULL;
 675         if (cur == root) {                      /* "."; write dirbuf */
 676                 membuf = dbufp->buf;
 677                 dinp->di_size = dbufp->size;
 678         } else if (S_ISBLK(cur->type) || S_ISCHR(cur->type)) {
 679                 dinp->di_size = 0;      /* a device */
 680                 dinp->di_rdev =
 681                     ufs_rw32(cur->inode->st.st_rdev, fsopts->needswap);
 682         } else if (S_ISLNK(cur->type)) {        /* symlink */
 683                 slen = strlen(cur->symlink);
 684                 if (slen < MAXSYMLINKLEN_UFS1) {        /* short link */
 685                         memcpy(dinp->di_db, cur->symlink, slen);
 686                 } else
 687                         membuf = cur->symlink;
 688                 dinp->di_size = slen;
 689         }
 690         return membuf;
 691 }
 692
 693 static void *
 694 ffs_build_dinode2(struct ufs2_dinode *dinp, dirbuf_t *dbufp, fsnode *cur,
 695                  fsnode *root, fsinfo_t *fsopts)
 696 {
 697         int slen;
 698         void *membuf;
 699
 700         memset(dinp, 0, sizeof(*dinp));
 701         dinp->di_mode = cur->inode->st.st_mode;
 702         dinp->di_nlink = cur->inode->nlink;
 703         dinp->di_size = cur->inode->st.st_size;
 704         dinp->di_atime = cur->inode->st.st_atime;
 705         dinp->di_mtime = cur->inode->st.st_mtime;
 706         dinp->di_ctime = cur->inode->st.st_ctime;
 707 #if HAVE_STRUCT_STAT_ST_MTIMENSEC
 708         dinp->di_atimensec = cur->inode->st.st_atimensec;
 709         dinp->di_mtimensec = cur->inode->st.st_mtimensec;
 710         dinp->di_ctimensec = cur->inode->st.st_ctimensec;
 711 #endif
 712 #if HAVE_STRUCT_STAT_ST_FLAGS
 713         dinp->di_flags = cur->inode->st.st_flags;
 714 #endif
 715 #if HAVE_STRUCT_STAT_ST_GEN
 716         dinp->di_gen = cur->inode->st.st_gen;
 717 #endif
 718 #if HAVE_STRUCT_STAT_BIRTHTIME
 719         dinp->di_birthtime = cur->inode->st.st_birthtime;
 720         dinp->di_birthnsec = cur->inode->st.st_birthtimensec;
 721 #endif
 722         dinp->di_uid = cur->inode->st.st_uid;
 723         dinp->di_gid = cur->inode->st.st_gid;
 724                 /* not set: di_db, di_ib, di_blocks, di_spare */
 725
 726         membuf = NULL;
 727         if (cur == root) {                      /* "."; write dirbuf */
 728                 membuf = dbufp->buf;
 729                 dinp->di_size = dbufp->size;
 730         } else if (S_ISBLK(cur->type) || S_ISCHR(cur->type)) {
 731                 dinp->di_size = 0;      /* a device */
 732                 dinp->di_rdev =
 733                     ufs_rw64(cur->inode->st.st_rdev, fsopts->needswap);
 734         } else if (S_ISLNK(cur->type)) {        /* symlink */
 735                 slen = strlen(cur->symlink);
 736                 if (slen < MAXSYMLINKLEN_UFS2) {        /* short link */
 737                         memcpy(dinp->di_db, cur->symlink, slen);
 738                 } else
 739                         membuf = cur->symlink;
 740                 dinp->di_size = slen;
 741         }
 742         return membuf;
 743 }
 744
 745 static int
 746 ffs_populate_dir(const char *dir, fsnode *root, fsinfo_t *fsopts)
 747 {
 748         fsnode          *cur;
 749         dirbuf_t        dirbuf;
 750         union dinode    din;
 751         void            *membuf;
 752         char            path[MAXPATHLEN + 1];
 753         ffs_opt_t       *ffs_opts = fsopts->fs_specific;
 754
 755         assert(dir != NULL);
 756         assert(root != NULL);
 757         assert(fsopts != NULL);
 758         assert(ffs_opts != NULL);
 759
 760         (void)memset(&dirbuf, 0, sizeof(dirbuf));
 761
 762         if (debug & DEBUG_FS_POPULATE)
 763                 printf("ffs_populate_dir: PASS 1  dir %s node %p\n", dir, root);
 764
 765                 /*
 766                  * pass 1: allocate inode numbers, build directory `file'
 767                  */
 768         for (cur = root; cur != NULL; cur = cur->next) {
 769                 if ((cur->inode->flags & FI_ALLOCATED) == 0) {
 770                         cur->inode->flags |= FI_ALLOCATED;
 771                         if (cur == root && cur->parent != NULL)
 772                                 cur->inode->ino = cur->parent->inode->ino;
 773                         else {
 774                                 cur->inode->ino = fsopts->curinode;
 775                                 fsopts->curinode++;
 776                         }
 777                 }
 778                 ffs_make_dirbuf(&dirbuf, cur->name, cur, fsopts->needswap);
 779                 if (cur == root) {              /* we're at "."; add ".." */
 780                         ffs_make_dirbuf(&dirbuf, "..",
 781                             cur->parent == NULL ? cur : cur->parent->first,
 782                             fsopts->needswap);
 783                         root->inode->nlink++;   /* count my parent's link */
 784                 } else if (cur->child != NULL)
 785                         root->inode->nlink++;   /* count my child's link */
 786
 787                 /*
 788                  * XXX  possibly write file and long symlinks here,
 789                  *      ensuring that blocks get written before inodes?
 790                  *      otoh, this isn't a real filesystem, so who
 791                  *      cares about ordering? :-)
 792                  */
 793         }
 794         if (debug & DEBUG_FS_POPULATE_DIRBUF)
 795                 ffs_dump_dirbuf(&dirbuf, dir, fsopts->needswap);
 796
 797                 /*
 798                  * pass 2: write out dirbuf, then non-directories at this level
 799                  */
 800         if (debug & DEBUG_FS_POPULATE)
 801                 printf("ffs_populate_dir: PASS 2  dir %s\n", dir);
 802         for (cur = root; cur != NULL; cur = cur->next) {
 803                 if (cur->inode->flags & FI_WRITTEN)
 804                         continue;               /* skip hard-linked entries */
 805                 cur->inode->flags |= FI_WRITTEN;
 806
 807                 if (cur->contents == NULL) {
 808                         if (snprintf(path, sizeof(path), "%s/%s/%s", cur->root,
 809                             cur->path, cur->name) >= (int)sizeof(path))
 810                                 errx(1, "Pathname too long.");
 811                 }
 812
 813                 if (cur->child != NULL)
 814                         continue;               /* child creates own inode */
 815
 816                                 /* build on-disk inode */
 817                 if (ffs_opts->version == 1)
 818                         membuf = ffs_build_dinode1(&din.ffs1_din, &dirbuf, cur,
 819                             root, fsopts);
 820                 else
 821                         membuf = ffs_build_dinode2(&din.ffs2_din, &dirbuf, cur,
 822                             root, fsopts);
 823
 824                 if (debug & DEBUG_FS_POPULATE_NODE) {
 825                         printf("ffs_populate_dir: writing ino %d, %s",
 826                             cur->inode->ino, inode_type(cur->type));
 827                         if (cur->inode->nlink > 1)
 828                                 printf(", nlink %d", cur->inode->nlink);
 829                         putchar('\n');
 830                 }
 831
 832                 if (membuf != NULL) {
 833                         ffs_write_file(&din, cur->inode->ino, membuf, fsopts);
 834                 } else if (S_ISREG(cur->type)) {
 835                         ffs_write_file(&din, cur->inode->ino,
 836                             (cur->contents) ?  cur->contents : path, fsopts);
 837                 } else {
 838                         assert (! S_ISDIR(cur->type));
 839                         ffs_write_inode(&din, cur->inode->ino, fsopts);
 840                 }
 841         }
 842
 843                 /*
 844                  * pass 3: write out sub-directories
 845                  */
 846         if (debug & DEBUG_FS_POPULATE)
 847                 printf("ffs_populate_dir: PASS 3  dir %s\n", dir);
 848         for (cur = root; cur != NULL; cur = cur->next) {
 849                 if (cur->child == NULL)
 850                         continue;
 851                 if (snprintf(path, sizeof(path), "%s/%s", dir, cur->name)
 852                     >= sizeof(path))
 853                         errx(1, "Pathname too long.");
 854                 if (! ffs_populate_dir(path, cur->child, fsopts))
 855                         return (0);
 856         }
 857
 858         if (debug & DEBUG_FS_POPULATE)
 859                 printf("ffs_populate_dir: DONE dir %s\n", dir);
 860
 861                 /* cleanup */
 862         if (dirbuf.buf != NULL)
 863                 free(dirbuf.buf);
 864         return (1);
 865 }
 866
 867
 868 static void
 869 ffs_write_file(union dinode *din, uint32_t ino, void *buf, fsinfo_t *fsopts)
 870 {
 871         int     isfile, ffd;
 872         char    *fbuf, *p;
 873         off_t   bufleft, chunk, offset;
 874         ssize_t nread;
 875         struct inode    in;
 876         struct buf *    bp;
 877         ffs_opt_t       *ffs_opts = fsopts->fs_specific;
 878
 879         assert (din != NULL);
 880         assert (buf != NULL);
 881         assert (fsopts != NULL);
 882         assert (ffs_opts != NULL);
 883
 884         isfile = S_ISREG(DIP(din, mode));
 885         fbuf = NULL;
 886         ffd = -1;
 887         p = NULL;
 888
 889         in.i_fs = (struct fs *)fsopts->superblock;
 890
 891         if (debug & DEBUG_FS_WRITE_FILE) {
 892                 printf(
 893                     "ffs_write_file: ino %u, din %p, isfile %d, %s, size %lld",
 894                     ino, din, isfile, inode_type(DIP(din, mode) & S_IFMT),
 895                     (long long)DIP(din, size));
 896                 if (isfile)
 897                         printf(", file '%s'\n", (char *)buf);
 898                 else
 899                         printf(", buffer %p\n", buf);
 900         }
 901
 902         in.i_number = ino;
 903         in.i_size = DIP(din, size);
 904         if (ffs_opts->version == 1)
 905                 memcpy(&in.i_din.ffs1_din, &din->ffs1_din,
 906                     sizeof(in.i_din.ffs1_din));
 907         else
 908                 memcpy(&in.i_din.ffs2_din, &din->ffs2_din,
 909                     sizeof(in.i_din.ffs2_din));
 910         in.i_fd = fsopts->fd;
 911
 912         if (DIP(din, size) == 0)
 913                 goto write_inode_and_leave;             /* mmm, cheating */
 914
 915         if (isfile) {
 916                 if ((fbuf = malloc(ffs_opts->bsize)) == NULL)
 917                         err(1, "Allocating memory for write buffer");
 918                 if ((ffd = open((char *)buf, O_RDONLY, 0444)) == -1) {
 919                         warn("Can't open `%s' for reading", (char *)buf);
 920                         goto leave_ffs_write_file;
 921                 }
 922         } else {
 923                 p = buf;
 924         }
 925
 926         chunk = 0;
 927         for (bufleft = DIP(din, size); bufleft > 0; bufleft -= chunk) {
 928                 chunk = MIN(bufleft, ffs_opts->bsize);
 929                 if (!isfile)
 930                         ;
 931                 else if ((nread = read(ffd, fbuf, chunk)) == -1)
 932                         err(EXIT_FAILURE, "Reading `%s', %lld bytes to go",
 933                             (char *)buf, (long long)bufleft);
 934                 else if (nread != chunk)
 935                         errx(EXIT_FAILURE, "Reading `%s', %lld bytes to go, "
 936                             "read %zd bytes, expected %ju bytes, does "
 937                             "metalog size= attribute mismatch source size?",
 938                             (char *)buf, (long long)bufleft, nread,
 939                             (uintmax_t)chunk);
 940                 else
 941                         p = fbuf;
 942                 offset = DIP(din, size) - bufleft;
 943                 if (debug & DEBUG_FS_WRITE_FILE_BLOCK)
 944                         printf(
 945                 "ffs_write_file: write %p offset %lld size %lld left %lld\n",
 946                             p, (long long)offset,
 947                             (long long)chunk, (long long)bufleft);
 948         /*
 949          * XXX  if holey support is desired, do the check here
 950          *
 951          * XXX  might need to write out last bit in fragroundup
 952          *      sized chunk. however, ffs_balloc() handles this for us
 953          */
 954                 errno = ffs_balloc(&in, offset, chunk, &bp);
 955  bad_ffs_write_file:
 956                 if (errno != 0)
 957                         err(1,
 958                             "Writing inode %d (%s), bytes %lld + %lld",
 959                             ino,
 960                             isfile ? (char *)buf :
 961                               inode_type(DIP(din, mode) & S_IFMT),
 962                             (long long)offset, (long long)chunk);
 963                 memcpy(bp->b_data, p, chunk);
 964                 errno = bwrite(bp);
 965                 if (errno != 0)
 966                         goto bad_ffs_write_file;
 967                 brelse(bp);
 968                 if (!isfile)
 969                         p += chunk;
 970         }
 971
 972  write_inode_and_leave:
 973         ffs_write_inode(&in.i_din, in.i_number, fsopts);
 974
 975  leave_ffs_write_file:
 976         if (fbuf)
 977                 free(fbuf);
 978         if (ffd != -1)
 979                 close(ffd);
 980 }
 981
 982
 983 static void
 984 ffs_dump_dirbuf(dirbuf_t *dbuf, const char *dir, int needswap)
 985 {
 986         doff_t          i;
 987         struct direct   *de;
 988         uint16_t        reclen;
 989
 990         assert (dbuf != NULL);
 991         assert (dir != NULL);
 992         printf("ffs_dump_dirbuf: dir %s size %d cur %d\n",
 993             dir, dbuf->size, dbuf->cur);
 994
 995         for (i = 0; i < dbuf->size; ) {
 996                 de = (struct direct *)(dbuf->buf + i);
 997                 reclen = ufs_rw16(de->d_reclen, needswap);
 998                 printf(
 999             " inode %4d %7s offset %4d reclen %3d namlen %3d name %s\n",
1000                     ufs_rw32(de->d_ino, needswap),
1001                     inode_type(DTTOIF(de->d_type)), i, reclen,
1002                     de->d_namlen, de->d_name);
1003                 i += reclen;
1004                 assert(reclen > 0);
1005         }
1006 }
1007
1008 static void
1009 ffs_make_dirbuf(dirbuf_t *dbuf, const char *name, fsnode *node, int needswap)
1010 {
1011         struct direct   de, *dp;
1012         uint16_t        llen, reclen;
1013         u_char          *newbuf;
1014
1015         assert (dbuf != NULL);
1016         assert (name != NULL);
1017         assert (node != NULL);
1018                                         /* create direct entry */
1019         (void)memset(&de, 0, sizeof(de));
1020         de.d_ino = ufs_rw32(node->inode->ino, needswap);
1021         de.d_type = IFTODT(node->type);
1022         de.d_namlen = (uint8_t)strlen(name);
1023         strcpy(de.d_name, name);
1024         reclen = DIRSIZ_SWAP(0, &de, needswap);
1025         de.d_reclen = ufs_rw16(reclen, needswap);
1026
1027         dp = (struct direct *)(dbuf->buf + dbuf->cur);
1028         llen = 0;
1029         if (dp != NULL)
1030                 llen = DIRSIZ_SWAP(0, dp, needswap);
1031
1032         if (debug & DEBUG_FS_MAKE_DIRBUF)
1033                 printf(
1034                     "ffs_make_dirbuf: dbuf siz %d cur %d lastlen %d\n"
1035                     "  ino %d type %d reclen %d namlen %d name %.30s\n",
1036                     dbuf->size, dbuf->cur, llen,
1037                     ufs_rw32(de.d_ino, needswap), de.d_type, reclen,
1038                     de.d_namlen, de.d_name);
1039
1040         if (reclen + dbuf->cur + llen > roundup(dbuf->size, DIRBLKSIZ)) {
1041                 if (debug & DEBUG_FS_MAKE_DIRBUF)
1042                         printf("ffs_make_dirbuf: growing buf to %d\n",
1043                             dbuf->size + DIRBLKSIZ);
1044                 if ((newbuf = realloc(dbuf->buf, dbuf->size + DIRBLKSIZ)) == NULL)
1045                         err(1, "Allocating memory for directory buffer");
1046                 dbuf->buf = newbuf;
1047                 dbuf->size += DIRBLKSIZ;
1048                 memset(dbuf->buf + dbuf->size - DIRBLKSIZ, 0, DIRBLKSIZ);
1049                 dbuf->cur = dbuf->size - DIRBLKSIZ;
1050         } else if (dp) {                        /* shrink end of previous */
1051                 dp->d_reclen = ufs_rw16(llen,needswap);
1052                 dbuf->cur += llen;
1053         }
1054         dp = (struct direct *)(dbuf->buf + dbuf->cur);
1055         memcpy(dp, &de, reclen);
1056         dp->d_reclen = ufs_rw16(dbuf->size - dbuf->cur, needswap);
1057 }
1058
1059 /*
1060  * cribbed from sys/ufs/ffs/ffs_alloc.c
1061  */
1062 static void
1063 ffs_write_inode(union dinode *dp, uint32_t ino, const fsinfo_t *fsopts)
1064 {
1065         char            *buf;
1066         struct ufs1_dinode *dp1;
1067         struct ufs2_dinode *dp2, *dip;
1068         struct cg       *cgp;
1069         struct fs       *fs;
1070         int             cg, cgino, i;
1071         daddr_t         d;
1072         char            sbbuf[FFS_MAXBSIZE];
1073         int32_t         initediblk;
1074         ffs_opt_t       *ffs_opts = fsopts->fs_specific;
1075
1076         assert (dp != NULL);
1077         assert (ino > 0);
1078         assert (fsopts != NULL);
1079         assert (ffs_opts != NULL);
1080
1081         fs = (struct fs *)fsopts->superblock;
1082         cg = ino_to_cg(fs, ino);
1083         cgino = ino % fs->fs_ipg;
1084         if (debug & DEBUG_FS_WRITE_INODE)
1085                 printf("ffs_write_inode: din %p ino %u cg %d cgino %d\n",
1086                     dp, ino, cg, cgino);
1087
1088         ffs_rdfs(fsbtodb(fs, cgtod(fs, cg)), (int)fs->fs_cgsize, &sbbuf,
1089             fsopts);
1090         cgp = (struct cg *)sbbuf;
1091         if (!cg_chkmagic_swap(cgp, fsopts->needswap))
1092                 errx(1, "ffs_write_inode: cg %d: bad magic number", cg);
1093
1094         assert (isclr(cg_inosused_swap(cgp, fsopts->needswap), cgino));
1095
1096         buf = malloc(fs->fs_bsize);
1097         if (buf == NULL)
1098                 errx(1, "ffs_write_inode: cg %d: can't alloc inode block", cg);
1099
1100         dp1 = (struct ufs1_dinode *)buf;
1101         dp2 = (struct ufs2_dinode *)buf;
1102
1103         if (fs->fs_cstotal.cs_nifree == 0)
1104                 errx(1, "ffs_write_inode: fs out of inodes for ino %u",
1105                     ino);
1106         if (fs->fs_cs(fs, cg).cs_nifree == 0)
1107                 errx(1,
1108                     "ffs_write_inode: cg %d out of inodes for ino %u",
1109                     cg, ino);
1110         setbit(cg_inosused_swap(cgp, fsopts->needswap), cgino);
1111         ufs_add32(cgp->cg_cs.cs_nifree, -1, fsopts->needswap);
1112         fs->fs_cstotal.cs_nifree--;
1113         fs->fs_cs(fs, cg).cs_nifree--;
1114         if (S_ISDIR(DIP(dp, mode))) {
1115                 ufs_add32(cgp->cg_cs.cs_ndir, 1, fsopts->needswap);
1116                 fs->fs_cstotal.cs_ndir++;
1117                 fs->fs_cs(fs, cg).cs_ndir++;
1118         }
1119
1120         /*
1121          * Initialize inode blocks on the fly for UFS2.
1122          */
1123         initediblk = ufs_rw32(cgp->cg_initediblk, fsopts->needswap);
1124         if (ffs_opts->version == 2 && cgino + INOPB(fs) > initediblk &&
1125             initediblk < ufs_rw32(cgp->cg_niblk, fsopts->needswap)) {
1126                 memset(buf, 0, fs->fs_bsize);
1127                 dip = (struct ufs2_dinode *)buf;
1128                 /* Seeding affects reproducible builds. */
1129                 srandom(time(NULL));
1130                 for (i = 0; i < INOPB(fs); i++) {
1131                         dip->di_gen = random();
1132                         dip++;
1133                 }
1134                 ffs_wtfs(fsbtodb(fs, ino_to_fsba(fs,
1135                                   cg * fs->fs_ipg + initediblk)),
1136                     fs->fs_bsize, buf, fsopts);
1137                 initediblk += INOPB(fs);
1138                 cgp->cg_initediblk = ufs_rw32(initediblk, fsopts->needswap);
1139         }
1140
1141
1142         ffs_wtfs(fsbtodb(fs, cgtod(fs, cg)), (int)fs->fs_cgsize, &sbbuf,
1143             fsopts);
1144
1145                                         /* now write inode */
1146         d = fsbtodb(fs, ino_to_fsba(fs, ino));
1147         ffs_rdfs(d, fs->fs_bsize, buf, fsopts);
1148         if (fsopts->needswap) {
1149                 if (ffs_opts->version == 1)
1150                         ffs_dinode1_swap(&dp->ffs1_din,
1151                             &dp1[ino_to_fsbo(fs, ino)]);
1152                 else
1153                         ffs_dinode2_swap(&dp->ffs2_din,
1154                             &dp2[ino_to_fsbo(fs, ino)]);
1155         } else {
1156                 if (ffs_opts->version == 1)
1157                         dp1[ino_to_fsbo(fs, ino)] = dp->ffs1_din;
1158                 else
1159                         dp2[ino_to_fsbo(fs, ino)] = dp->ffs2_din;
1160         }
1161         ffs_wtfs(d, fs->fs_bsize, buf, fsopts);
1162         free(buf);
1163 }
1164
1165 void
1166 panic(const char *fmt, ...)
1167 {
1168         va_list ap;
1169
1170         va_start(ap, fmt);
1171         vwarnx(fmt, ap);
1172         va_end(ap);
1173         exit(1);
1174 }