usr.sbin/makefs/makefs.c

   1 /*      $NetBSD: makefs.c,v 1.26 2006/10/22 21:11:56 christos Exp $     */
   2
   3 /*-
   4  * SPDX-License-Identifier: BSD-4-Clause
   5  *
   6  * Copyright (c) 2001-2003 Wasabi Systems, Inc.
   7  * All rights reserved.
   8  *
   9  * Written by Luke Mewburn for Wasabi Systems, Inc.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  * 3. All advertising materials mentioning features or use of this software
  20  *    must display the following acknowledgement:
  21  *      This product includes software developed for the NetBSD Project by
  22  *      Wasabi Systems, Inc.
  23  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
  24  *    or promote products derived from this software without specific prior
  25  *    written permission.
  26  *
  27  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
  28  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  29  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  30  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
  31  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  32  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  33  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  34  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  35  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  36  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  37  * POSSIBILITY OF SUCH DAMAGE.
  38  */
  39
  40 #include <sys/cdefs.h>
  41 __FBSDID("$FreeBSD$");
  42
  43 #include <sys/types.h>
  44 #include <sys/stat.h>
  45 #include <assert.h>
  46 #include <ctype.h>
  47 #include <errno.h>
  48 #include <limits.h>
  49 #include <stdio.h>
  50 #include <stdlib.h>
  51 #include <string.h>
  52 #include <time.h>
  53 #include <unistd.h>
  54 #include <stdbool.h>
  55 #include <util.h>
  56
  57 #include "makefs.h"
  58 #include "mtree.h"
  59
  60 /*
  61  * list of supported file systems and dispatch functions
  62  */
  63 typedef struct {
  64         const char      *type;
  65         void            (*prepare_options)(fsinfo_t *);
  66         int             (*parse_options)(const char *, fsinfo_t *);
  67         void            (*cleanup_options)(fsinfo_t *);
  68         void            (*make_fs)(const char *, const char *, fsnode *,
  69                                 fsinfo_t *);
  70 } fstype_t;
  71
  72 static fstype_t fstypes[] = {
  73 #define ENTRY(name) { \
  74         # name, name ## _prep_opts, name ## _parse_opts, \
  75         name ## _cleanup_opts, name ## _makefs  \
  76 }
  77         ENTRY(cd9660),
  78         ENTRY(ffs),
  79         ENTRY(msdos),
  80 #ifdef HAVE_ZFS
  81         ENTRY(zfs),
  82 #endif
  83         { .type = NULL  },
  84 };
  85
  86 u_int           debug;
  87 int             dupsok;
  88 struct timespec start_time;
  89 struct stat stampst;
  90
  91 static  fstype_t *get_fstype(const char *);
  92 static int get_tstamp(const char *, struct stat *);
  93 static  void    usage(fstype_t *, fsinfo_t *);
  94
  95 int
  96 main(int argc, char *argv[])
  97 {
  98         struct stat      sb;
  99         struct timeval   start;
 100         fstype_t        *fstype;
 101         fsinfo_t         fsoptions;
 102         fsnode          *root;
 103         int              ch, i, len;
 104         const char      *subtree;
 105         const char      *specfile;
 106
 107         setprogname(argv[0]);
 108
 109         debug = 0;
 110         if ((fstype = get_fstype(DEFAULT_FSTYPE)) == NULL)
 111                 errx(1, "Unknown default fs type `%s'.", DEFAULT_FSTYPE);
 112
 113                 /* set default fsoptions */
 114         (void)memset(&fsoptions, 0, sizeof(fsoptions));
 115         fsoptions.fd = -1;
 116         fsoptions.sectorsize = -1;
 117
 118         if (fstype->prepare_options)
 119                 fstype->prepare_options(&fsoptions);
 120
 121         specfile = NULL;
 122 #ifdef CLOCK_REALTIME
 123         ch = clock_gettime(CLOCK_REALTIME, &start_time);
 124 #else
 125         ch = gettimeofday(&start, NULL);
 126         start_time.tv_sec = start.tv_sec;
 127         start_time.tv_nsec = start.tv_usec * 1000;
 128 #endif
 129         if (ch == -1)
 130                 err(1, "Unable to get system time");
 131
 132
 133         while ((ch = getopt(argc, argv, "B:b:Dd:f:F:M:m:N:O:o:pR:s:S:t:T:xZ")) != -1) {
 134                 switch (ch) {
 135
 136                 case 'B':
 137                         if (strcmp(optarg, "be") == 0 ||
 138                             strcmp(optarg, "4321") == 0 ||
 139                             strcmp(optarg, "big") == 0) {
 140 #if BYTE_ORDER == LITTLE_ENDIAN
 141                                 fsoptions.needswap = 1;
 142 #endif
 143                         } else if (strcmp(optarg, "le") == 0 ||
 144                             strcmp(optarg, "1234") == 0 ||
 145                             strcmp(optarg, "little") == 0) {
 146 #if BYTE_ORDER == BIG_ENDIAN
 147                                 fsoptions.needswap = 1;
 148 #endif
 149                         } else {
 150                                 warnx("Invalid endian `%s'.", optarg);
 151                                 usage(fstype, &fsoptions);
 152                         }
 153                         break;
 154
 155                 case 'b':
 156                         len = strlen(optarg) - 1;
 157                         if (optarg[len] == '%') {
 158                                 optarg[len] = '\0';
 159                                 fsoptions.freeblockpc =
 160                                     strsuftoll("free block percentage",
 161                                         optarg, 0, 99);
 162                         } else {
 163                                 fsoptions.freeblocks =
 164                                     strsuftoll("free blocks",
 165                                         optarg, 0, LLONG_MAX);
 166                         }
 167                         break;
 168
 169                 case 'D':
 170                         dupsok = 1;
 171                         break;
 172
 173                 case 'd':
 174                         debug = strtoll(optarg, NULL, 0);
 175                         break;
 176
 177                 case 'f':
 178                         len = strlen(optarg) - 1;
 179                         if (optarg[len] == '%') {
 180                                 optarg[len] = '\0';
 181                                 fsoptions.freefilepc =
 182                                     strsuftoll("free file percentage",
 183                                         optarg, 0, 99);
 184                         } else {
 185                                 fsoptions.freefiles =
 186                                     strsuftoll("free files",
 187                                         optarg, 0, LLONG_MAX);
 188                         }
 189                         break;
 190
 191                 case 'F':
 192                         specfile = optarg;
 193                         break;
 194
 195                 case 'M':
 196                         fsoptions.minsize =
 197                             strsuftoll("minimum size", optarg, 1LL, LLONG_MAX);
 198                         break;
 199
 200                 case 'N':
 201                         if (! setup_getid(optarg))
 202                                 errx(1,
 203                             "Unable to use user and group databases in `%s'",
 204                                     optarg);
 205                         break;
 206
 207                 case 'm':
 208                         fsoptions.maxsize =
 209                             strsuftoll("maximum size", optarg, 1LL, LLONG_MAX);
 210                         break;
 211
 212                 case 'O':
 213                         fsoptions.offset =
 214                             strsuftoll("offset", optarg, 0LL, LLONG_MAX);
 215                         break;
 216
 217                 case 'o':
 218                 {
 219                         char *p;
 220
 221                         while ((p = strsep(&optarg, ",")) != NULL) {
 222                                 if (*p == '\0')
 223                                         errx(1, "Empty option");
 224                                 if (! fstype->parse_options(p, &fsoptions))
 225                                         usage(fstype, &fsoptions);
 226                         }
 227                         break;
 228                 }
 229                 case 'p':
 230                         /* Deprecated in favor of 'Z' */
 231                         fsoptions.sparse = 1;
 232                         break;
 233
 234                 case 'R':
 235                         /* Round image size up to specified block size */
 236                         fsoptions.roundup =
 237                             strsuftoll("roundup-size", optarg, 0, LLONG_MAX);
 238                         break;
 239
 240                 case 's':
 241                         fsoptions.minsize = fsoptions.maxsize =
 242                             strsuftoll("size", optarg, 1LL, LLONG_MAX);
 243                         break;
 244
 245                 case 'S':
 246                         fsoptions.sectorsize =
 247                             (int)strsuftoll("sector size", optarg,
 248                                 1LL, INT_MAX);
 249                         break;
 250
 251                 case 't':
 252                         /* Check current one and cleanup if necessary. */
 253                         if (fstype->cleanup_options)
 254                                 fstype->cleanup_options(&fsoptions);
 255                         fsoptions.fs_specific = NULL;
 256                         if ((fstype = get_fstype(optarg)) == NULL)
 257                                 errx(1, "Unknown fs type `%s'.", optarg);
 258                         fstype->prepare_options(&fsoptions);
 259                         break;
 260
 261                 case 'T':
 262                         if (get_tstamp(optarg, &stampst) == -1)
 263                                 errx(1, "Cannot get timestamp from `%s'",
 264                                     optarg);
 265                         break;
 266
 267                 case 'x':
 268                         fsoptions.onlyspec = 1;
 269                         break;
 270
 271                 case 'Z':
 272                         /* Superscedes 'p' for compatibility with NetBSD makefs(8) */
 273                         fsoptions.sparse = 1;
 274                         break;
 275
 276                 case '?':
 277                 default:
 278                         usage(fstype, &fsoptions);
 279                         /* NOTREACHED */
 280
 281                 }
 282         }
 283         if (debug) {
 284                 printf("debug mask: 0x%08x\n", debug);
 285                 printf("start time: %ld.%ld, %s",
 286                     (long)start_time.tv_sec, (long)start_time.tv_nsec,
 287                     ctime(&start_time.tv_sec));
 288         }
 289         argc -= optind;
 290         argv += optind;
 291
 292         if (argc < 2)
 293                 usage(fstype, &fsoptions);
 294
 295         /* -x must be accompanied by -F */
 296         if (fsoptions.onlyspec != 0 && specfile == NULL)
 297                 errx(1, "-x requires -F mtree-specfile.");
 298
 299         /* Accept '-' as meaning "read from standard input". */
 300         if (strcmp(argv[1], "-") == 0)
 301                 sb.st_mode = S_IFREG;
 302         else {
 303                 if (stat(argv[1], &sb) == -1)
 304                         err(1, "Can't stat `%s'", argv[1]);
 305         }
 306
 307         switch (sb.st_mode & S_IFMT) {
 308         case S_IFDIR:           /* walk the tree */
 309                 subtree = argv[1];
 310                 TIMER_START(start);
 311                 root = walk_dir(subtree, ".", NULL, NULL);
 312                 TIMER_RESULTS(start, "walk_dir");
 313                 break;
 314         case S_IFREG:           /* read the manifest file */
 315                 subtree = ".";
 316                 TIMER_START(start);
 317                 root = read_mtree(argv[1], NULL);
 318                 TIMER_RESULTS(start, "manifest");
 319                 break;
 320         default:
 321                 errx(1, "%s: not a file or directory", argv[1]);
 322                 /* NOTREACHED */
 323         }
 324
 325         /* append extra directory */
 326         for (i = 2; i < argc; i++) {
 327                 if (stat(argv[i], &sb) == -1)
 328                         err(1, "Can't stat `%s'", argv[i]);
 329                 if (!S_ISDIR(sb.st_mode))
 330                         errx(1, "%s: not a directory", argv[i]);
 331                 TIMER_START(start);
 332                 root = walk_dir(argv[i], ".", NULL, root);
 333                 TIMER_RESULTS(start, "walk_dir2");
 334         }
 335
 336         if (specfile) {         /* apply a specfile */
 337                 TIMER_START(start);
 338                 apply_specfile(specfile, subtree, root, fsoptions.onlyspec);
 339                 TIMER_RESULTS(start, "apply_specfile");
 340         }
 341
 342         if (debug & DEBUG_DUMP_FSNODES) {
 343                 printf("\nparent: %s\n", subtree);
 344                 dump_fsnodes(root);
 345                 putchar('\n');
 346         }
 347
 348                                 /* build the file system */
 349         TIMER_START(start);
 350         fstype->make_fs(argv[0], subtree, root, &fsoptions);
 351         TIMER_RESULTS(start, "make_fs");
 352
 353         free_fsnodes(root);
 354
 355         exit(0);
 356         /* NOTREACHED */
 357 }
 358
 359 int
 360 set_option(const option_t *options, const char *option, char *buf, size_t len)
 361 {
 362         char *var, *val;
 363         int retval;
 364
 365         assert(option != NULL);
 366
 367         var = estrdup(option);
 368         for (val = var; *val; val++)
 369                 if (*val == '=') {
 370                         *val++ = '\0';
 371                         break;
 372                 }
 373         retval = set_option_var(options, var, val, buf, len);
 374         free(var);
 375         return retval;
 376 }
 377
 378 int
 379 set_option_var(const option_t *options, const char *var, const char *val,
 380     char *buf, size_t len)
 381 {
 382         char *s;
 383         size_t i;
 384
 385 #define NUM(type) \
 386         if (!*val) { \
 387                 *(type *)options[i].value = 1; \
 388                 break; \
 389         } \
 390         *(type *)options[i].value = (type)strsuftoll(options[i].desc, val, \
 391             options[i].minimum, options[i].maximum); break
 392
 393         for (i = 0; options[i].name != NULL; i++) {
 394                 if (var[1] == '\0') {
 395                         if (options[i].letter != var[0])
 396                                 continue;
 397                 } else if (strcmp(options[i].name, var) != 0)
 398                         continue;
 399                 switch (options[i].type) {
 400                 case OPT_BOOL:
 401                         *(bool *)options[i].value = 1;
 402                         break;
 403                 case OPT_STRARRAY:
 404                         strlcpy((void *)options[i].value, val, (size_t)
 405                             options[i].maximum);
 406                         break;
 407                 case OPT_STRPTR:
 408                         s = estrdup(val);
 409                         *(char **)options[i].value = s;
 410                         break;
 411                 case OPT_STRBUF:
 412                         if (buf == NULL)
 413                                 abort();
 414                         strlcpy(buf, val, len);
 415                         break;
 416                 case OPT_INT64:
 417                         NUM(uint64_t);
 418                 case OPT_INT32:
 419                         NUM(uint32_t);
 420                 case OPT_INT16:
 421                         NUM(uint16_t);
 422                 case OPT_INT8:
 423                         NUM(uint8_t);
 424                 default:
 425                         warnx("Unknown type %d in option %s", options[i].type,
 426                             val);
 427                         return 0;
 428                 }
 429                 return i;
 430         }
 431         warnx("Unknown option `%s'", var);
 432         return -1;
 433 }
 434
 435
 436 static fstype_t *
 437 get_fstype(const char *type)
 438 {
 439         int i;
 440
 441         for (i = 0; fstypes[i].type != NULL; i++)
 442                 if (strcmp(fstypes[i].type, type) == 0)
 443                         return (&fstypes[i]);
 444         return (NULL);
 445 }
 446
 447 option_t *
 448 copy_opts(const option_t *o)
 449 {
 450         size_t i;
 451
 452         for (i = 0; o[i].name; i++)
 453                 continue;
 454         i++;
 455         return memcpy(ecalloc(i, sizeof(*o)), o, i * sizeof(*o));
 456 }
 457
 458 static int
 459 get_tstamp(const char *b, struct stat *st)
 460 {
 461         time_t when;
 462         char *eb;
 463         long long l;
 464
 465         if (stat(b, st) != -1)
 466                 return 0;
 467
 468         {
 469                 errno = 0;
 470                 l = strtoll(b, &eb, 0);
 471                 if (b == eb || *eb || errno)
 472                         return -1;
 473                 when = (time_t)l;
 474         }
 475
 476         st->st_ino = 1;
 477 #ifdef HAVE_STRUCT_STAT_BIRTHTIME
 478         st->st_birthtime =
 479 #endif
 480         st->st_mtime = st->st_ctime = st->st_atime = when;
 481         return 0;
 482 }
 483
 484 static void
 485 usage(fstype_t *fstype, fsinfo_t *fsoptions)
 486 {
 487         const char *prog;
 488
 489         prog = getprogname();
 490         fprintf(stderr,
 491 "Usage: %s [-xZ] [-B endian] [-b free-blocks] [-d debug-mask]\n"
 492 "\t[-F mtree-specfile] [-f free-files] [-M minimum-size] [-m maximum-size]\n"
 493 "\t[-N userdb-dir] [-O offset] [-o fs-options] [-R roundup-size]\n"
 494 "\t[-S sector-size] [-s image-size] [-T <timestamp/file>] [-t fs-type]\n"
 495 "\timage-file directory | manifest [extra-directory ...]\n",
 496             prog);
 497
 498         if (fstype) {
 499                 size_t i;
 500                 option_t *o = fsoptions->fs_options;
 501
 502                 fprintf(stderr, "\n%s specific options:\n", fstype->type);
 503                 for (i = 0; o[i].name != NULL; i++)
 504                         fprintf(stderr, "\t%c%c%20.20s\t%s\n",
 505                             o[i].letter ? o[i].letter : ' ',
 506                             o[i].letter ? ',' : ' ',
 507                             o[i].name, o[i].desc);
 508         }
 509         exit(1);
 510 }