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