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