dump/main.c

   1 /*
   2  *      Ported to Linux's Second Extended File System as part of the
   3  *      dump and restore backup suit
   4  *      Remy Card <card@Linux.EU.Org>, 1994-1997
   5  *      Stelian Pop <pop@noos.fr>, 1999-2000
   6  *      Stelian Pop <pop@noos.fr> - Alcôve <www.alcove.fr>, 2000
   7  */
   8
   9 /*-
  10  * Copyright (c) 1980, 1991, 1993, 1994
  11  *      The Regents of the University of California.  All rights reserved.
  12  *
  13  * Redistribution and use in source and binary forms, with or without
  14  * modification, are permitted provided that the following conditions
  15  * are met:
  16  * 1. Redistributions of source code must retain the above copyright
  17  *    notice, this list of conditions and the following disclaimer.
  18  * 2. Redistributions in binary form must reproduce the above copyright
  19  *    notice, this list of conditions and the following disclaimer in the
  20  *    documentation and/or other materials provided with the distribution.
  21  * 3. All advertising materials mentioning features or use of this software
  22  *    must display the following acknowledgement:
  23  *      This product includes software developed by the University of
  24  *      California, Berkeley and its contributors.
  25  * 4. Neither the name of the University nor the names of its contributors
  26  *    may be used to endorse or promote products derived from this software
  27  *    without specific prior written permission.
  28  *
  29  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  30  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  31  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  32  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  33  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  34  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  35  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  36  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  37  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  38  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  39  * SUCH DAMAGE.
  40  */
  41
  42 #ifndef lint
  43 static const char rcsid[] =
  44         "$Id: main.c,v 1.40 2001/03/23 14:40:12 stelian Exp $";
  45 #endif /* not lint */
  46
  47 #include <config.h>
  48 #include <ctype.h>
  49 #include <compaterr.h>
  50 #include <fcntl.h>
  51 #include <fstab.h>
  52 #include <signal.h>
  53 #include <stdio.h>
  54 #include <stdlib.h>
  55 #include <string.h>
  56 #include <unistd.h>
  57
  58 #include <sys/param.h>
  59 #include <sys/time.h>
  60 #ifdef __linux__
  61 #include <linux/ext2_fs.h>
  62 #include <ext2fs/ext2fs.h>
  63 #include <time.h>
  64 #include <sys/stat.h>
  65 #include <bsdcompat.h>
  66 #elif defined sunos
  67 #include <sys/vnode.h>
  68
  69 #include <ufs/inode.h>
  70 #include <ufs/fs.h>
  71 #else
  72 #include <ufs/ufs/dinode.h>
  73 #include <ufs/ffs/fs.h>
  74 #endif
  75
  76 #include <protocols/dumprestore.h>
  77
  78 #include "dump.h"
  79 #include "pathnames.h"
  80 #include "bylabel.h"
  81
  82 #ifndef SBOFF
  83 #define SBOFF (SBLOCK * DEV_BSIZE)
  84 #endif
  85
  86 int     notify = 0;     /* notify operator flag */
  87 int     blockswritten = 0;      /* number of blocks written on current tape */
  88 int     tapeno = 0;     /* current tape number */
  89 int     density = 0;    /* density in bytes/0.1" " <- this is for hilit19 */
  90 int     ntrec = NTREC;  /* # tape blocks in each tape record */
  91 int     cartridge = 0;  /* Assume non-cartridge tape */
  92 int     dokerberos = 0; /* Use Kerberos authentication */
  93 long    dev_bsize = 1;  /* recalculated below */
  94 long    blocksperfile;  /* output blocks per file */
  95 char    *host = NULL;   /* remote host (if any) */
  96 int     sizest = 0;     /* return size estimate only */
  97 int     compressed = 0; /* use zlib to compress the output, compress level 1-9 */
  98 long long bytes_written = 0; /* total bytes written */
  99 long    uncomprblks = 0;/* uncompressed blocks written */
 100
 101 #ifdef  __linux__
 102 char    *__progname;
 103 #endif
 104
 105 int     maxbsize = 64*1024;     /* XXX MAXBSIZE from sys/param.h */
 106 static long numarg __P((const char *, long, long));
 107 static void obsolete __P((int *, char **[]));
 108 static void usage __P((void));
 109
 110 dump_ino_t iexclude_list[IEXCLUDE_MAXNUM];/* the inode exclude list */
 111 int iexclude_num = 0;                   /* number of elements in the list */
 112
 113 int
 114 main(int argc, char *argv[])
 115 {
 116         register dump_ino_t ino;
 117         register int dirty;
 118         register struct dinode *dp;
 119         register struct fstab *dt;
 120         register char *map;
 121         register int ch;
 122         int i, anydirskipped, bflag = 0, Tflag = 0, honorlevel = 1;
 123         dump_ino_t maxino;
 124 #ifdef  __linux__
 125         errcode_t retval;
 126         char directory[MAXPATHLEN];
 127         char pathname[MAXPATHLEN];
 128 #endif
 129         time_t tnow;
 130         char *diskparam;
 131
 132         spcl.c_label[0] = '\0';
 133         spcl.c_date = time(NULL);
 134
 135 #ifdef __linux__
 136         __progname = argv[0];
 137         directory[0] = 0;
 138         initialize_ext2_error_table();
 139 #endif
 140
 141         tsize = 0;      /* Default later, based on 'c' option for cart tapes */
 142         unlimited = 1;
 143         eot_script = NULL;
 144         if ((tapeprefix = getenv("TAPE")) == NULL)
 145                 tapeprefix = _PATH_DEFTAPE;
 146         dumpdates = _PATH_DUMPDATES;
 147         if (TP_BSIZE / DEV_BSIZE == 0 || TP_BSIZE % DEV_BSIZE != 0)
 148                 quit("TP_BSIZE must be a multiple of DEV_BSIZE\n");
 149         level = '0';
 150
 151         if (argc < 2)
 152                 usage();
 153
 154         obsolete(&argc, &argv);
 155
 156         while ((ch = getopt(argc, argv,
 157                             "0123456789aB:b:cd:e:f:F:h:L:"
 158 #ifdef KERBEROS
 159                             "k"
 160 #endif
 161                             "Mns:ST:uWw"
 162 #ifdef HAVE_ZLIB
 163                             "z::"
 164 #endif
 165                             )) != -1)
 166 #undef optstring
 167                 switch (ch) {
 168                 /* dump level */
 169                 case '0': case '1': case '2': case '3': case '4':
 170                 case '5': case '6': case '7': case '8': case '9':
 171                         level = ch;
 172                         break;
 173
 174                 case 'a':               /* `auto-size', Write to EOM. */
 175                         unlimited = 1;
 176                         break;
 177
 178                 case 'B':               /* blocks per output file */
 179                         unlimited = 0;
 180                         blocksperfile = numarg("number of blocks per file",
 181                             1L, 0L);
 182                         break;
 183
 184                 case 'b':               /* blocks per tape write */
 185                         ntrec = numarg("number of blocks per write",
 186                             1L, 1000L);
 187                         if (ntrec > maxbsize/1024) {
 188                                 msg("Please choose a blocksize <= %dkB\n",
 189                                         maxbsize/1024);
 190                                 exit(X_STARTUP);
 191                         }
 192                         bflag = 1;
 193                         break;
 194
 195                 case 'c':               /* Tape is cart. not 9-track */
 196                         unlimited = 0;
 197                         cartridge = 1;
 198                         break;
 199
 200                 case 'd':               /* density, in bits per inch */
 201                         unlimited = 0;
 202                         density = numarg("density", 10L, 327670L) / 10;
 203                         if (density >= 625 && !bflag)
 204                                 ntrec = HIGHDENSITYTREC;
 205                         break;
 206
 207                                         /* 04-Feb-00 ILC */
 208                 case 'e':               /* exclude an inode */
 209                         if (iexclude_num == IEXCLUDE_MAXNUM) {
 210                                 (void)fprintf(stderr, "Too many -e options\n");
 211                                 exit(X_STARTUP);
 212                         }
 213                         iexclude_list[iexclude_num++] = numarg("inode to exclude",0L,0L);
 214                         if (iexclude_list[iexclude_num-1] <= ROOTINO) {
 215                                 (void)fprintf(stderr, "Cannot exclude inode %ld\n", (long)iexclude_list[iexclude_num-1]);
 216                                 exit(X_STARTUP);
 217                         }
 218                         msg("Added %d to exclude list\n",
 219                             iexclude_list[iexclude_num-1]);
 220                         break;
 221
 222                 case 'f':               /* output file */
 223                         tapeprefix = optarg;
 224                         break;
 225
 226                 case 'F':               /* end of tape script */
 227                         eot_script = optarg;
 228                         break;
 229
 230                 case 'h':
 231                         honorlevel = numarg("honor level", 0L, 10L);
 232                         break;
 233
 234 #ifdef KERBEROS
 235                 case 'k':
 236                         dokerberos = 1;
 237                         break;
 238 #endif
 239
 240                 case 'L':
 241                         /*
 242                          * Note that although there are LBLSIZE characters,
 243                          * the last must be '\0', so the limit on strlen()
 244                          * is really LBLSIZE-1.
 245                          */
 246                         strncpy(spcl.c_label, optarg, LBLSIZE);
 247                         spcl.c_label[LBLSIZE-1] = '\0';
 248                         if (strlen(optarg) > LBLSIZE-1) {
 249                                 msg(
 250                 "WARNING Label `%s' is larger than limit of %d characters.\n",
 251                                     optarg, LBLSIZE-1);
 252                                 msg("WARNING: Using truncated label `%s'.\n",
 253                                     spcl.c_label);
 254                         }
 255                         break;
 256
 257                 case 'M':               /* multi-volume flag */
 258                         Mflag = 1;
 259                         break;
 260
 261                 case 'n':               /* notify operators */
 262                         notify = 1;
 263                         break;
 264
 265                 case 's':               /* tape size, feet */
 266                         unlimited = 0;
 267                         tsize = numarg("tape size", 1L, 0L) * 12 * 10;
 268                         break;
 269
 270                 case 'S':
 271                         sizest = 1;     /* return size estimate only */
 272                         break;
 273
 274                 case 'T':               /* time of last dump */
 275                         spcl.c_ddate = unctime(optarg);
 276                         if (spcl.c_ddate < 0) {
 277                                 (void)fprintf(stderr, "bad time \"%s\"\n",
 278                                     optarg);
 279                                 exit(X_STARTUP);
 280                         }
 281                         Tflag = 1;
 282                         lastlevel = '?';
 283                         break;
 284
 285                 case 'u':               /* update dumpdates */
 286                         uflag = 1;
 287                         break;
 288
 289                 case 'W':               /* what to do */
 290                 case 'w':
 291                         lastdump(ch);
 292                         exit(X_FINOK);  /* do nothing else */
 293 #ifdef HAVE_ZLIB
 294                 case 'z':
 295                         compressed = 2;
 296                         if (optarg)
 297                                 compressed = numarg("compress level", 1L, 9L);
 298                         break;
 299 #endif /* HAVE_ZLIB */
 300
 301                 default:
 302                         usage();
 303                 }
 304         argc -= optind;
 305         argv += optind;
 306
 307         if (argc < 1) {
 308                 (void)fprintf(stderr, "Must specify disk or filesystem\n");
 309                 exit(X_STARTUP);
 310         }
 311         diskparam = *argv++;
 312         if (strlen(diskparam) >= MAXPATHLEN) {
 313                 (void)fprintf(stderr, "Disk or filesystem name too long: %s\n",
 314                               diskparam);
 315                 exit(X_STARTUP);
 316         }
 317         argc--;
 318         if (argc >= 1) {
 319                 (void)fprintf(stderr, "Unknown arguments to dump:");
 320                 while (argc--)
 321                         (void)fprintf(stderr, " %s", *argv++);
 322                 (void)fprintf(stderr, "\n");
 323                 exit(X_STARTUP);
 324         }
 325         if (Tflag && uflag) {
 326                 (void)fprintf(stderr,
 327                     "You cannot use the T and u flags together.\n");
 328                 exit(X_STARTUP);
 329         }
 330         if (strcmp(tapeprefix, "-") == 0) {
 331                 pipeout++;
 332                 tapeprefix = "standard output";
 333         }
 334
 335         if (blocksperfile)
 336                 blocksperfile = blocksperfile / ntrec * ntrec; /* round down */
 337         else if (!unlimited) {
 338                 /*
 339                  * Determine how to default tape size and density
 340                  *
 341                  *              density                         tape size
 342                  * 9-track      1600 bpi (160 bytes/.1")        2300 ft.
 343                  * 9-track      6250 bpi (625 bytes/.1")        2300 ft.
 344                  * cartridge    8000 bpi (100 bytes/.1")        1700 ft.
 345                  *                                              (450*4 - slop)
 346                  * hilit19 hits again: "
 347                  */
 348                 if (density == 0)
 349                         density = cartridge ? 100 : 160;
 350                 if (tsize == 0)
 351                         tsize = cartridge ? 1700L*120L : 2300L*120L;
 352         }
 353
 354         if (strchr(tapeprefix, ':')) {
 355                 host = tapeprefix;
 356                 tapeprefix = strchr(host, ':');
 357                 *tapeprefix++ = '\0';
 358 #ifdef RDUMP
 359                 if (index(tapeprefix, '\n')) {
 360                     (void)fprintf(stderr, "invalid characters in tape\n");
 361                     exit(X_STARTUP);
 362                 }
 363                 if (rmthost(host) == 0)
 364                         exit(X_STARTUP);
 365 #else
 366                 (void)fprintf(stderr, "remote dump not enabled\n");
 367                 exit(X_STARTUP);
 368 #endif
 369         }
 370         (void)setuid(getuid()); /* rmthost() is the only reason to be setuid */
 371
 372         if (signal(SIGHUP, SIG_IGN) != SIG_IGN)
 373                 signal(SIGHUP, sig);
 374         if (signal(SIGTRAP, SIG_IGN) != SIG_IGN)
 375                 signal(SIGTRAP, sig);
 376         if (signal(SIGFPE, SIG_IGN) != SIG_IGN)
 377                 signal(SIGFPE, sig);
 378         if (signal(SIGBUS, SIG_IGN) != SIG_IGN)
 379                 signal(SIGBUS, sig);
 380         if (signal(SIGSEGV, SIG_IGN) != SIG_IGN)
 381                 signal(SIGSEGV, sig);
 382         if (signal(SIGTERM, SIG_IGN) != SIG_IGN)
 383                 signal(SIGTERM, sig);
 384         if (signal(SIGINT, interrupt) == SIG_IGN)
 385                 signal(SIGINT, SIG_IGN);
 386         set_operators();        /* /etc/group snarfed */
 387         getfstab();             /* /etc/fstab snarfed */
 388
 389         /*
 390          *      disk may end in / and this can confuse
 391          *      fstabsearch.
 392          */
 393         i = strlen(diskparam) - 1;
 394         if (i > 1 && diskparam[i] == '/')
 395                 diskparam[i] = '\0';
 396
 397         disk = get_device_name(diskparam);
 398         if (!disk) {            /* null means the disk is some form
 399                                    of LABEL= or UID= but it was not
 400                                    found */
 401                 msg("Cannot find a disk having %s\n", diskparam);
 402                 exit(X_STARTUP);
 403         }
 404         /*
 405          *      disk can be either the full special file name,
 406          *      the suffix of the special file name,
 407          *      the special name missing the leading '/',
 408          *      the file system name with or without the leading '/'.
 409          */
 410         if ((dt = fstabsearch(disk)) != NULL) {
 411                 disk = rawname(dt->fs_spec);
 412                 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
 413                 (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN);
 414         } else {
 415 #ifdef  __linux__
 416 #ifdef  HAVE_REALPATH
 417                 if (realpath(disk, pathname) == NULL)
 418 #endif
 419                         strcpy(pathname, disk);
 420                 /*
 421                  * The argument could be now a mountpoint of
 422                  * a filesystem specified in fstab. Search for it.
 423                  */
 424                 if ((dt = fstabsearch(pathname)) != NULL) {
 425                         disk = rawname(dt->fs_spec);
 426                         (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
 427                         (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN);
 428                 } else {
 429                         /*
 430                          * The argument was not found in the fstab
 431                          * assume that this is a subtree and search for it
 432                          */
 433                         dt = fstabsearchdir(pathname, directory);
 434                         if (dt != NULL) {
 435                                 char name[MAXPATHLEN];
 436                                 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
 437                                 (void)snprintf(name, sizeof(name), "%s (dir %s)",
 438                                               dt->fs_file, directory);
 439                                 (void)strncpy(spcl.c_filesys, name, NAMELEN);
 440                                 disk = rawname(dt->fs_spec);
 441                         } else {
 442                                 (void)strncpy(spcl.c_dev, disk, NAMELEN);
 443                                 (void)strncpy(spcl.c_filesys, "an unlisted file system",
 444                                     NAMELEN);
 445                         }
 446                 }
 447 #else
 448                 (void)strncpy(spcl.c_dev, disk, NAMELEN);
 449                 (void)strncpy(spcl.c_filesys, "an unlisted file system",
 450                     NAMELEN);
 451 #endif
 452         }
 453
 454         if (directory[0] != 0) {
 455                 if (level != '0') {
 456                         (void)fprintf(stderr, "Only level 0 dumps are allowed on a subdirectory\n");
 457                         exit(X_STARTUP);
 458                 }
 459                 if (uflag) {
 460                         (void)fprintf(stderr, "You can't update the dumpdates file when dumping a subdirectory\n");
 461                         exit(X_STARTUP);
 462                 }
 463         }
 464         spcl.c_dev[NAMELEN-1] = '\0';
 465         spcl.c_filesys[NAMELEN-1] = '\0';
 466         (void)gethostname(spcl.c_host, NAMELEN);
 467         spcl.c_host[NAMELEN-1] = '\0';
 468         spcl.c_level = level - '0';
 469         spcl.c_type = TS_TAPE;
 470         if (!Tflag)
 471                 getdumptime(uflag);             /* dumpdates snarfed */
 472
 473         if (spcl.c_ddate == 0 && spcl.c_level) {
 474                 msg("WARNING: There is no inferior level dump on this filesystem\n");
 475                 msg("WARNING: Assuming a level 0 dump by default\n");
 476                 level = '0';
 477                 spcl.c_level = 0;
 478         }
 479
 480         if (Mflag)
 481                 snprintf(tape, MAXPATHLEN, "%s%03d", tapeprefix, tapeno + 1);
 482         else
 483                 strncpy(tape, tapeprefix, MAXPATHLEN);
 484         tape[MAXPATHLEN - 1] = '\0';
 485
 486         if (!sizest) {
 487
 488                 msg("Date of this level %c dump: %s", level,
 489                     ctime4(&spcl.c_date));
 490                 if (spcl.c_ddate)
 491                         msg("Date of last level %c dump: %s", lastlevel,
 492                             ctime4(&spcl.c_ddate));
 493                 msg("Dumping %s (%s) ", disk, spcl.c_filesys);
 494                 if (host)
 495                         msgtail("to %s on host %s\n", tape, host);
 496                 else
 497                         msgtail("to %s\n", tape);
 498         } /* end of size estimate */
 499
 500 #ifdef  __linux__
 501         retval = dump_fs_open(disk, &fs);
 502         if (retval) {
 503                 com_err(disk, retval, "while opening filesystem");
 504                 if (retval == EXT2_ET_REV_TOO_HIGH)
 505                         printf ("Get a newer version of dump!\n");
 506                 exit(X_STARTUP);
 507         }
 508         if (fs->super->s_rev_level > DUMP_CURRENT_REV) {
 509                 com_err(disk, retval, "while opening filesystem");
 510                 printf ("Get a newer version of dump!\n");
 511                 exit(X_STARTUP);
 512         }
 513         if ((diskfd = open(disk, O_RDONLY)) < 0) {
 514                 msg("Cannot open %s\n", disk);
 515                 exit(X_STARTUP);
 516         }
 517         /* if no user label specified, use ext2 filesystem label if available */
 518         if (spcl.c_label[0] == '\0') {
 519                 const char *lbl;
 520                 if ( (lbl = get_device_label(disk)) != NULL) {
 521                         strncpy(spcl.c_label, lbl, LBLSIZE);
 522                         spcl.c_label[LBLSIZE-1] = '\0';
 523                 }
 524                 else
 525                         strcpy(spcl.c_label, "none");   /* safe strcpy. */
 526         }
 527         sync();
 528         dev_bsize = DEV_BSIZE;
 529         dev_bshift = ffs(dev_bsize) - 1;
 530         if (dev_bsize != (1 << dev_bshift))
 531                 quit("dev_bsize (%d) is not a power of 2", dev_bsize);
 532         tp_bshift = ffs(TP_BSIZE) - 1;
 533         if (TP_BSIZE != (1 << tp_bshift))
 534                 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
 535         maxino = fs->super->s_inodes_count;
 536 #if     0
 537         spcl.c_flags |= DR_NEWINODEFMT;
 538 #endif
 539 #else   /* __linux __*/
 540         if ((diskfd = open(disk, O_RDONLY)) < 0) {
 541                 msg("Cannot open %s\n", disk);
 542                 exit(X_STARTUP);
 543         }
 544         sync();
 545         sblock = (struct fs *)sblock_buf;
 546         bread(SBOFF, (char *) sblock, SBSIZE);
 547         if (sblock->fs_magic != FS_MAGIC)
 548                 quit("bad sblock magic number\n");
 549         dev_bsize = sblock->fs_fsize / fsbtodb(sblock, 1);
 550         dev_bshift = ffs(dev_bsize) - 1;
 551         if (dev_bsize != (1 << dev_bshift))
 552                 quit("dev_bsize (%d) is not a power of 2", dev_bsize);
 553         tp_bshift = ffs(TP_BSIZE) - 1;
 554         if (TP_BSIZE != (1 << tp_bshift))
 555                 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
 556 #ifdef FS_44INODEFMT
 557         if (sblock->fs_inodefmt >= FS_44INODEFMT)
 558                 spcl.c_flags |= DR_NEWINODEFMT;
 559 #endif
 560         maxino = sblock->fs_ipg * sblock->fs_ncg;
 561 #endif  /* __linux__ */
 562         mapsize = roundup(howmany(maxino, NBBY), TP_BSIZE);
 563         usedinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
 564         dumpdirmap = (char *)calloc((unsigned) mapsize, sizeof(char));
 565         dumpinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
 566         if (usedinomap == NULL || dumpdirmap == NULL || dumpinomap == NULL)
 567                 quit("out of memory allocating inode maps\n");
 568         tapesize = 2 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
 569
 570         nonodump = spcl.c_level < honorlevel;
 571
 572         msg("Label: %s\n", spcl.c_label);
 573
 574         if (compressed)
 575                 msg("Compressing output at compression level %d\n", compressed);
 576
 577 #if defined(SIGINFO)
 578         (void)signal(SIGINFO, statussig);
 579 #endif
 580
 581         if (!sizest)
 582                 msg("mapping (Pass I) [regular files]\n");
 583 #ifdef  __linux__
 584         if (directory[0] == 0)
 585                 anydirskipped = mapfiles(maxino, &tapesize);
 586         else
 587                 anydirskipped = mapfilesfromdir(maxino, &tapesize, directory);
 588 #else
 589         anydirskipped = mapfiles(maxino, &tapesize);
 590 #endif
 591
 592         if (!sizest)
 593                 msg("mapping (Pass II) [directories]\n");
 594         while (anydirskipped) {
 595                 anydirskipped = mapdirs(maxino, &tapesize);
 596         }
 597
 598         if (sizest) {
 599                 printf("%.0f\n", ((double)tapesize + 11) * TP_BSIZE);
 600                 exit(X_FINOK);
 601         } /* stop here for size estimate */
 602
 603         if (pipeout || unlimited) {
 604                 tapesize += 11; /* 10 trailer blocks + 1 map header */
 605                 msg("estimated %ld tape blocks.\n", tapesize);
 606         } else {
 607                 double fetapes;
 608
 609                 if (blocksperfile)
 610                         fetapes = (double) tapesize / blocksperfile;
 611                 else if (cartridge) {
 612                         /* Estimate number of tapes, assuming streaming stops at
 613                            the end of each block written, and not in mid-block.
 614                            Assume no erroneous blocks; this can be compensated
 615                            for with an artificially low tape size. */
 616                         fetapes =
 617                         (         (double) tapesize     /* blocks */
 618                                 * TP_BSIZE      /* bytes/block */
 619                                 * (1.0/density) /* 0.1" / byte " */
 620                           +
 621                                   (double) tapesize     /* blocks */
 622                                 * (1.0/ntrec)   /* streaming-stops per block */
 623                                 * 15.48         /* 0.1" / streaming-stop " */
 624                         ) * (1.0 / tsize );     /* tape / 0.1" " */
 625                 } else {
 626                         /* Estimate number of tapes, for old fashioned 9-track
 627                            tape */
 628                         int tenthsperirg = (density == 625) ? 3 : 7;
 629                         fetapes =
 630                         (         (double) tapesize     /* blocks */
 631                                 * TP_BSIZE      /* bytes / block */
 632                                 * (1.0/density) /* 0.1" / byte " */
 633                           +
 634                                   (double) tapesize     /* blocks */
 635                                 * (1.0/ntrec)   /* IRG's / block */
 636                                 * tenthsperirg  /* 0.1" / IRG " */
 637                         ) * (1.0 / tsize );     /* tape / 0.1" " */
 638                 }
 639                 etapes = fetapes;               /* truncating assignment */
 640                 etapes++;
 641                 /* count the dumped inodes map on each additional tape */
 642                 tapesize += (etapes - 1) *
 643                         (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
 644                 tapesize += etapes + 10;        /* headers + 10 trailer blks */
 645                 msg("estimated %ld tape blocks on %3.2f tape(s).\n",
 646                     tapesize, fetapes);
 647         }
 648
 649         /*
 650          * Allocate tape buffer.
 651          */
 652         if (!alloctape())
 653                 quit(
 654         "can't allocate tape buffers - try a smaller blocking factor.\n");
 655
 656         startnewtape(1);
 657         tstart_writing = time(NULL);
 658         dumpmap(usedinomap, TS_CLRI, maxino - 1);
 659
 660         msg("dumping (Pass III) [directories]\n");
 661         dirty = 0;              /* XXX just to get gcc to shut up */
 662         for (map = dumpdirmap, ino = 1; ino < maxino; ino++) {
 663                 if (((ino - 1) % NBBY) == 0)    /* map is offset by 1 */
 664                         dirty = *map++;
 665                 else
 666                         dirty >>= 1;
 667                 if ((dirty & 1) == 0)
 668                         continue;
 669                 /*
 670                  * Skip directory inodes deleted and maybe reallocated
 671                  */
 672                 dp = getino(ino);
 673                 if ((dp->di_mode & IFMT) != IFDIR)
 674                         continue;
 675 #ifdef  __linux__
 676                 /*
 677                  * Skip directory inodes deleted and not yes reallocated...
 678                  */
 679                 if (dp->di_nlink == 0 || dp->di_dtime != 0)
 680                         continue;
 681                 (void)dumpdirino(dp, ino);
 682 #else
 683                 (void)dumpino(dp, ino);
 684 #endif
 685         }
 686
 687         msg("dumping (Pass IV) [regular files]\n");
 688         for (map = dumpinomap, ino = 1; ino < maxino; ino++) {
 689                 if (((ino - 1) % NBBY) == 0)    /* map is offset by 1 */
 690                         dirty = *map++;
 691                 else
 692                         dirty >>= 1;
 693                 if ((dirty & 1) == 0)
 694                         continue;
 695                 /*
 696                  * Skip inodes deleted and reallocated as directories.
 697                  */
 698                 dp = getino(ino);
 699                 if ((dp->di_mode & IFMT) == IFDIR)
 700                         continue;
 701 #ifdef __linux__
 702                 /*
 703                  * No need to check here for deleted and not yes reallocated inodes
 704                  * since this is done in dumpino().
 705                  */
 706 #endif
 707                 (void)dumpino(dp, ino);
 708         }
 709
 710         tend_writing = time(NULL);
 711         spcl.c_type = TS_END;
 712         for (i = 0; i < ntrec; i++)
 713                 writeheader(maxino - 1);
 714
 715         tnow = trewind();
 716
 717         if (pipeout)
 718                 msg("%ld tape blocks (%.2fMB)\n", spcl.c_tapea,
 719                         ((double)spcl.c_tapea * TP_BSIZE / 1048576));
 720         else
 721                 msg("%ld tape blocks (%.2fMB) on %d volume(s)\n",
 722                     spcl.c_tapea,
 723                     ((double)spcl.c_tapea * TP_BSIZE / 1048576),
 724                     spcl.c_volume);
 725
 726         /* report dump performance, avoid division through zero */
 727         if (tend_writing - tstart_writing == 0)
 728                 msg("finished in less than a second\n");
 729         else
 730                 msg("finished in %d seconds, throughput %d kBytes/sec\n",
 731                     tend_writing - tstart_writing,
 732                     spcl.c_tapea / (tend_writing - tstart_writing));
 733
 734         putdumptime();
 735         msg("Date of this level %c dump: %s", level,
 736                 spcl.c_date == 0 ? "the epoch\n" : ctime4(&spcl.c_date));
 737         msg("Date this dump completed:  %s", ctime(&tnow));
 738
 739         msg("Average transfer rate: %ld kB/s\n", xferrate / tapeno);
 740         if (compressed) {
 741                 long tapekb = bytes_written / 1024;
 742                 double rate = .0005 + (double) spcl.c_tapea / tapekb;
 743                 msg("Wrote %ldkB uncompressed, %ldKB compressed, %1.3f:1\n",
 744                         spcl.c_tapea, tapekb, rate);
 745         }
 746
 747         broadcast("DUMP IS DONE!\7\7\n");
 748         msg("DUMP IS DONE\n");
 749         Exit(X_FINOK);
 750         /* NOTREACHED */
 751         return 0;       /* gcc - shut up */
 752 }
 753
 754 static void
 755 usage(void)
 756 {
 757         char white[MAXPATHLEN];
 758         const char *ext2ver, *ext2date;
 759
 760         memset(white, ' ', MAXPATHLEN);
 761         white[MIN(strlen(__progname), MAXPATHLEN - 1)] = '\0';
 762
 763 #ifdef __linux__
 764         ext2fs_get_library_version(&ext2ver, &ext2date);
 765         fprintf(stderr, "%s %s (using libext2fs %s of %s)\n",
 766                 __progname, _DUMP_VERSION, ext2ver, ext2date);
 767 #else
 768         fprintf(stderr, "%s %s\n", __progname, _DUMP_VERSION);
 769 #endif
 770         fprintf(stderr,
 771                 "usage:\t%s [-0123456789ac"
 772 #ifdef KERBEROS
 773                 "k"
 774 #endif
 775                 "MnSu"
 776                 "] [-B records] [-b blocksize]\n"
 777                 "\t%s [-d density] [-e inode#] [-f file] [-h level] [-s feet]\n"
 778                 "\t%s [-T date] "
 779 #ifdef HAVE_ZLIB
 780                 "[-z zlevel] "
 781 #endif
 782                 "filesystem\n"
 783                 "\t%s [-W | -w]\n",
 784                 __progname, white, white, __progname);
 785         exit(X_STARTUP);
 786 }
 787
 788 /*
 789  * Pick up a numeric argument.  It must be nonnegative and in the given
 790  * range (except that a vmax of 0 means unlimited).
 791  */
 792 static long
 793 numarg(const char *meaning, long vmin, long vmax)
 794 {
 795         char *p;
 796         long val;
 797
 798         val = strtol(optarg, &p, 10);
 799         if (*p)
 800                 errx(X_STARTUP, "illegal %s -- %s", meaning, optarg);
 801         if (val < vmin || (vmax && val > vmax))
 802                 errx(X_STARTUP, "%s must be between %ld and %ld", meaning, vmin, vmax);
 803         return (val);
 804 }
 805
 806 void
 807 sig(int signo)
 808 {
 809         switch(signo) {
 810         case SIGALRM:
 811         case SIGBUS:
 812         case SIGFPE:
 813         case SIGHUP:
 814         case SIGTERM:
 815         case SIGTRAP:
 816                 if (pipeout)
 817                         quit("Signal on pipe: cannot recover\n");
 818                 msg("Rewriting attempted as response to unknown signal.\n");
 819                 (void)fflush(stderr);
 820                 (void)fflush(stdout);
 821                 close_rewind();
 822                 exit(X_REWRITE);
 823                 /* NOTREACHED */
 824         case SIGSEGV:
 825                 msg("SIGSEGV: ABORTING!\n");
 826                 (void)signal(SIGSEGV, SIG_DFL);
 827                 (void)kill(0, SIGSEGV);
 828                 /* NOTREACHED */
 829         }
 830 }
 831
 832 const char *
 833 rawname(const char *cp)
 834 {
 835 #ifdef  __linux__
 836         return cp;
 837 #else   /* __linux__ */
 838         static char rawbuf[MAXPATHLEN];
 839         char *dp = strrchr(cp, '/');
 840
 841         if (dp == NULL)
 842                 return (NULL);
 843         (void)strncpy(rawbuf, cp, min(dp-cp, MAXPATHLEN - 1));
 844         rawbuf[min(dp-cp, MAXPATHLEN-1)] = '\0';
 845         (void)strncat(rawbuf, "/r", MAXPATHLEN - 1 - strlen(rawbuf));
 846         (void)strncat(rawbuf, dp + 1, MAXPATHLEN - 1 - strlen(rawbuf));
 847         return (rawbuf);
 848 #endif  /* __linux__ */
 849 }
 850
 851 /*
 852  * obsolete --
 853  *      Change set of key letters and ordered arguments into something
 854  *      getopt(3) will like.
 855  */
 856 static void
 857 obsolete(int *argcp, char **argvp[])
 858 {
 859         int argc, flags;
 860         char *ap, **argv, *flagsp=NULL, **nargv, *p=NULL;
 861
 862         /* Setup. */
 863         argv = *argvp;
 864         argc = *argcp;
 865
 866         /* Return if no arguments or first argument has leading dash. */
 867         ap = argv[1];
 868         if (argc == 1 || *ap == '-')
 869                 return;
 870
 871         /* Allocate space for new arguments. */
 872         if ((*argvp = nargv = malloc((argc + 1) * sizeof(char *))) == NULL ||
 873             (p = flagsp = malloc(strlen(ap) + 2)) == NULL)
 874                 err(X_STARTUP, "malloc new args");
 875
 876         *nargv++ = *argv;
 877         argv += 2;
 878
 879         for (flags = 0; *ap; ++ap) {
 880                 switch (*ap) {
 881                 case 'B':
 882                 case 'b':
 883                 case 'd':
 884                 case 'e':
 885                 case 'f':
 886                 case 'F':
 887                 case 'h':
 888                 case 'L':
 889                 case 's':
 890                 case 'T':
 891                         if (*argv == NULL) {
 892                                 warnx("option requires an argument -- %c", *ap);
 893                                 usage();
 894                         }
 895                         if ((nargv[0] = malloc(strlen(*argv) + 2 + 1)) == NULL)
 896                                 err(X_STARTUP, "malloc arg");
 897                         nargv[0][0] = '-';
 898                         nargv[0][1] = *ap;
 899                         (void)strcpy(&nargv[0][2], *argv);
 900                         ++argv;
 901                         ++nargv;
 902                         break;
 903                 default:
 904                         if (!flags) {
 905                                 *p++ = '-';
 906                                 flags = 1;
 907                         }
 908                         *p++ = *ap;
 909                         break;
 910                 }
 911         }
 912
 913         /* Terminate flags. */
 914         if (flags) {
 915                 *p = '\0';
 916                 *nargv++ = flagsp;
 917         }
 918
 919         /* Copy remaining arguments. */
 920         while ((*nargv++ = *argv++));
 921
 922         /* Update argument count. */
 923         *argcp = nargv - *argvp - 1;
 924 }