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 1.35 2001/03/19 13:22:48 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 */
  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 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 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         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 = 0;
 134 #ifdef  __linux__
 135         (void)time4(&spcl.c_date);
 136 #else
 137         (void)time((time_t *)&spcl.c_date);
 138 #endif
 139
 140 #ifdef __linux__
 141         __progname = argv[0];
 142         directory[0] = 0;
 143         initialize_ext2_error_table();
 144 #endif
 145
 146         tsize = 0;      /* Default later, based on 'c' option for cart tapes */
 147         unlimited = 1;
 148         eot_script = NULL;
 149         if ((tapeprefix = getenv("TAPE")) == NULL)
 150                 tapeprefix = _PATH_DEFTAPE;
 151         dumpdates = _PATH_DUMPDATES;
 152         if (TP_BSIZE / DEV_BSIZE == 0 || TP_BSIZE % DEV_BSIZE != 0)
 153                 quit("TP_BSIZE must be a multiple of DEV_BSIZE\n");
 154         level = '0';
 155
 156         if (argc < 2)
 157                 usage();
 158
 159         obsolete(&argc, &argv);
 160
 161         while ((ch = getopt(argc, argv,
 162                             "0123456789aB:b:cd:e:f:F:h:L:"
 163 #ifdef KERBEROS
 164                             "k"
 165 #endif
 166                             "Mns:ST:uWw"
 167 #ifdef HAVE_ZLIB
 168                             "z"
 169 #endif
 170                             )) != -1)
 171 #undef optstring
 172                 switch (ch) {
 173                 /* dump level */
 174                 case '0': case '1': case '2': case '3': case '4':
 175                 case '5': case '6': case '7': case '8': case '9':
 176                         level = ch;
 177                         break;
 178
 179                 case 'a':               /* `auto-size', Write to EOM. */
 180                         unlimited = 1;
 181                         break;
 182
 183                 case 'B':               /* blocks per output file */
 184                         unlimited = 0;
 185                         blocksperfile = numarg("number of blocks per file",
 186                             1L, 0L);
 187                         break;
 188
 189                 case 'b':               /* blocks per tape write */
 190                         ntrec = numarg("number of blocks per write",
 191                             1L, 1000L);
 192                         if (ntrec > maxbsize/1024) {
 193                                 msg("Please choose a blocksize <= %dKB\n",
 194                                         maxbsize/1024);
 195                                 exit(X_STARTUP);
 196                         }
 197                         bflag = 1;
 198                         break;
 199
 200                 case 'c':               /* Tape is cart. not 9-track */
 201                         unlimited = 0;
 202                         cartridge = 1;
 203                         break;
 204
 205                 case 'd':               /* density, in bits per inch */
 206                         unlimited = 0;
 207                         density = numarg("density", 10L, 327670L) / 10;
 208                         if (density >= 625 && !bflag)
 209                                 ntrec = HIGHDENSITYTREC;
 210                         break;
 211
 212                                         /* 04-Feb-00 ILC */
 213                 case 'e':               /* exclude an inode */
 214                         if (iexclude_num == IEXCLUDE_MAXNUM) {
 215                                 (void)fprintf(stderr, "Too many -e options\n");
 216                                 exit(X_STARTUP);
 217                         }
 218                         iexclude_list[iexclude_num++] = numarg("inode to exclude",0L,0L);
 219                         if (iexclude_list[iexclude_num-1] <= ROOTINO) {
 220                                 (void)fprintf(stderr, "Cannot exclude inode %ld\n", (long)iexclude_list[iexclude_num-1]);
 221                                 exit(X_STARTUP);
 222                         }
 223                         msg("Added %d to exclude list\n",
 224                             iexclude_list[iexclude_num-1]);
 225                         break;
 226
 227                 case 'f':               /* output file */
 228                         tapeprefix = optarg;
 229                         break;
 230
 231                 case 'F':               /* end of tape script */
 232                         eot_script = optarg;
 233                         break;
 234
 235                 case 'h':
 236                         honorlevel = numarg("honor level", 0L, 10L);
 237                         break;
 238
 239 #ifdef KERBEROS
 240                 case 'k':
 241                         dokerberos = 1;
 242                         break;
 243 #endif
 244
 245                 case 'L':
 246                         /*
 247                          * Note that although there are LBLSIZE characters,
 248                          * the last must be '\0', so the limit on strlen()
 249                          * is really LBLSIZE-1.
 250                          */
 251                         strncpy(spcl.c_label, optarg, LBLSIZE);
 252                         spcl.c_label[LBLSIZE-1] = '\0';
 253                         if (strlen(optarg) > LBLSIZE-1) {
 254                                 msg(
 255                 "WARNING Label `%s' is larger than limit of %d characters.\n",
 256                                     optarg, LBLSIZE-1);
 257                                 msg("WARNING: Using truncated label `%s'.\n",
 258                                     spcl.c_label);
 259                         }
 260                         break;
 261
 262                 case 'M':               /* multi-volume flag */
 263                         Mflag = 1;
 264                         break;
 265
 266                 case 'n':               /* notify operators */
 267                         notify = 1;
 268                         break;
 269
 270                 case 's':               /* tape size, feet */
 271                         unlimited = 0;
 272                         tsize = numarg("tape size", 1L, 0L) * 12 * 10;
 273                         break;
 274
 275                 case 'S':
 276                         sizest = 1;     /* return size estimate only */
 277                         break;
 278
 279                 case 'T':               /* time of last dump */
 280                         spcl.c_ddate = unctime(optarg);
 281                         if (spcl.c_ddate < 0) {
 282                                 (void)fprintf(stderr, "bad time \"%s\"\n",
 283                                     optarg);
 284                                 exit(X_STARTUP);
 285                         }
 286                         Tflag = 1;
 287                         lastlevel = '?';
 288                         break;
 289
 290                 case 'u':               /* update dumpdates */
 291                         uflag = 1;
 292                         break;
 293
 294                 case 'W':               /* what to do */
 295                 case 'w':
 296                         lastdump(ch);
 297                         exit(X_FINOK);  /* do nothing else */
 298 #ifdef HAVE_ZLIB
 299                 case 'z':
 300                         compressed = 1;
 301                         break;
 302 #endif /* HAVE_ZLIB */
 303
 304                 default:
 305                         usage();
 306                 }
 307         argc -= optind;
 308         argv += optind;
 309
 310         if (argc < 1) {
 311                 (void)fprintf(stderr, "Must specify disk or filesystem\n");
 312                 exit(X_STARTUP);
 313         }
 314         diskparam = *argv++;
 315         if (strlen(diskparam) >= MAXPATHLEN) {
 316                 (void)fprintf(stderr, "Disk or filesystem name too long: %s\n",
 317                               diskparam);
 318                 exit(X_STARTUP);
 319         }
 320         argc--;
 321         if (argc >= 1) {
 322                 (void)fprintf(stderr, "Unknown arguments to dump:");
 323                 while (argc--)
 324                         (void)fprintf(stderr, " %s", *argv++);
 325                 (void)fprintf(stderr, "\n");
 326                 exit(X_STARTUP);
 327         }
 328         if (Tflag && uflag) {
 329                 (void)fprintf(stderr,
 330                     "You cannot use the T and u flags together.\n");
 331                 exit(X_STARTUP);
 332         }
 333         if (strcmp(tapeprefix, "-") == 0) {
 334                 pipeout++;
 335                 tapeprefix = "standard output";
 336         }
 337
 338         if (blocksperfile)
 339                 blocksperfile = blocksperfile / ntrec * ntrec; /* round down */
 340         else if (!unlimited) {
 341                 /*
 342                  * Determine how to default tape size and density
 343                  *
 344                  *              density                         tape size
 345                  * 9-track      1600 bpi (160 bytes/.1")        2300 ft.
 346                  * 9-track      6250 bpi (625 bytes/.1")        2300 ft.
 347                  * cartridge    8000 bpi (100 bytes/.1")        1700 ft.
 348                  *                                              (450*4 - slop)
 349                  * hilit19 hits again: "
 350                  */
 351                 if (density == 0)
 352                         density = cartridge ? 100 : 160;
 353                 if (tsize == 0)
 354                         tsize = cartridge ? 1700L*120L : 2300L*120L;
 355         }
 356
 357         if (strchr(tapeprefix, ':')) {
 358                 host = tapeprefix;
 359                 tapeprefix = strchr(host, ':');
 360                 *tapeprefix++ = '\0';
 361 #ifdef RDUMP
 362                 if (index(tapeprefix, '\n')) {
 363                     (void)fprintf(stderr, "invalid characters in tape\n");
 364                     exit(X_STARTUP);
 365                 }
 366                 if (rmthost(host) == 0)
 367                         exit(X_STARTUP);
 368 #else
 369                 (void)fprintf(stderr, "remote dump not enabled\n");
 370                 exit(X_STARTUP);
 371 #endif
 372         }
 373         (void)setuid(getuid()); /* rmthost() is the only reason to be setuid */
 374
 375         if (signal(SIGHUP, SIG_IGN) != SIG_IGN)
 376                 signal(SIGHUP, sig);
 377         if (signal(SIGTRAP, SIG_IGN) != SIG_IGN)
 378                 signal(SIGTRAP, sig);
 379         if (signal(SIGFPE, SIG_IGN) != SIG_IGN)
 380                 signal(SIGFPE, sig);
 381         if (signal(SIGBUS, SIG_IGN) != SIG_IGN)
 382                 signal(SIGBUS, sig);
 383         if (signal(SIGSEGV, SIG_IGN) != SIG_IGN)
 384                 signal(SIGSEGV, sig);
 385         if (signal(SIGTERM, SIG_IGN) != SIG_IGN)
 386                 signal(SIGTERM, sig);
 387         if (signal(SIGINT, interrupt) == SIG_IGN)
 388                 signal(SIGINT, SIG_IGN);
 389         set_operators();        /* /etc/group snarfed */
 390         getfstab();             /* /etc/fstab snarfed */
 391
 392         /*
 393          *      disk may end in / and this can confuse
 394          *      fstabsearch.
 395          */
 396         i = strlen(diskparam) - 1;
 397         if (i > 1 && diskparam[i] == '/')
 398                 diskparam[i] = '\0';
 399
 400         disk = get_device_name(diskparam);
 401         if (!disk) {            /* null means the disk is some form
 402                                    of LABEL= or UID= but it was not
 403                                    found */
 404                 msg("Cannot find a disk having %s\n", diskparam);
 405                 exit(X_STARTUP);
 406         }
 407         /*
 408          *      disk can be either the full special file name,
 409          *      the suffix of the special file name,
 410          *      the special name missing the leading '/',
 411          *      the file system name with or without the leading '/'.
 412          */
 413         if ((dt = fstabsearch(disk)) != NULL) {
 414                 disk = rawname(dt->fs_spec);
 415                 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
 416                 (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN);
 417         } else {
 418 #ifdef  __linux__
 419 #ifdef  HAVE_REALPATH
 420                 if (realpath(disk, pathname) == NULL)
 421 #endif
 422                         strcpy(pathname, disk);
 423                 /*
 424                  * The argument could be now a mountpoint of
 425                  * a filesystem specified in fstab. Search for it.
 426                  */
 427                 if ((dt = fstabsearch(pathname)) != NULL) {
 428                         disk = rawname(dt->fs_spec);
 429                         (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
 430                         (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN);
 431                 } else {
 432                         /*
 433                          * The argument was not found in the fstab
 434                          * assume that this is a subtree and search for it
 435                          */
 436                         dt = fstabsearchdir(pathname, directory);
 437                         if (dt != NULL) {
 438                                 char name[MAXPATHLEN];
 439                                 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
 440                                 (void)snprintf(name, sizeof(name), "%s (dir %s)",
 441                                               dt->fs_file, directory);
 442                                 (void)strncpy(spcl.c_filesys, name, NAMELEN);
 443                                 disk = rawname(dt->fs_spec);
 444                         } else {
 445                                 (void)strncpy(spcl.c_dev, disk, NAMELEN);
 446                                 (void)strncpy(spcl.c_filesys, "an unlisted file system",
 447                                     NAMELEN);
 448                         }
 449                 }
 450 #else
 451                 (void)strncpy(spcl.c_dev, disk, NAMELEN);
 452                 (void)strncpy(spcl.c_filesys, "an unlisted file system",
 453                     NAMELEN);
 454 #endif
 455         }
 456
 457         if (directory[0] != 0) {
 458                 if (level != '0') {
 459                         (void)fprintf(stderr, "Only level 0 dumps are allowed on a subdirectory\n");
 460                         exit(X_STARTUP);
 461                 }
 462                 if (uflag) {
 463                         (void)fprintf(stderr, "You can't update the dumpdates file when dumping a subdirectory\n");
 464                         exit(X_STARTUP);
 465                 }
 466         }
 467         spcl.c_dev[NAMELEN-1] = '\0';
 468         spcl.c_filesys[NAMELEN-1] = '\0';
 469         (void)gethostname(spcl.c_host, NAMELEN);
 470         spcl.c_host[NAMELEN-1] = '\0';
 471         spcl.c_level = level - '0';
 472         spcl.c_type = TS_TAPE;
 473         if (!Tflag)
 474                 getdumptime(uflag);             /* dumpdates snarfed */
 475
 476         if (spcl.c_ddate == 0 && spcl.c_level) {
 477                 msg("WARNING: There is no inferior level dump on this filesystem\n");
 478                 msg("WARNING: Assuming a level 0 dump by default\n");
 479                 level = '0';
 480                 spcl.c_level = 0;
 481         }
 482
 483         if (Mflag)
 484                 snprintf(tape, MAXPATHLEN, "%s%03d", tapeprefix, tapeno + 1);
 485         else
 486                 strncpy(tape, tapeprefix, MAXPATHLEN);
 487         tape[MAXPATHLEN - 1] = '\0';
 488
 489         if (!sizest) {
 490
 491                 msg("Date of this level %c dump: %s", level,
 492 #ifdef  __linux__
 493                         spcl.c_date == 0 ? "the epoch\n" : ctime4(&spcl.c_date));
 494 #else
 495                         spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date));
 496 #endif
 497                 msg("Date of last level %c dump: %s", lastlevel,
 498 #ifdef  __linux__
 499                         spcl.c_ddate == 0 ? "the epoch\n" : ctime4(&spcl.c_ddate));
 500 #else
 501                         spcl.c_ddate == 0 ? "the epoch\n" : ctime(&spcl.c_ddate));
 502 #endif
 503                 msg("Dumping %s (%s) ", disk, spcl.c_filesys);
 504                 if (host)
 505                         msgtail("to %s on host %s\n", tape, host);
 506                 else
 507                         msgtail("to %s\n", tape);
 508         } /* end of size estimate */
 509
 510 #ifdef  __linux__
 511         retval = dump_fs_open(disk, &fs);
 512         if (retval) {
 513                 com_err(disk, retval, "while opening filesystem");
 514                 if (retval == EXT2_ET_REV_TOO_HIGH)
 515                         printf ("Get a newer version of dump!\n");
 516                 exit(X_STARTUP);
 517         }
 518         if (fs->super->s_rev_level > DUMP_CURRENT_REV) {
 519                 com_err(disk, retval, "while opening filesystem");
 520                 printf ("Get a newer version of dump!\n");
 521                 exit(X_STARTUP);
 522         }
 523         if ((diskfd = open(disk, O_RDONLY)) < 0) {
 524                 msg("Cannot open %s\n", disk);
 525                 exit(X_STARTUP);
 526         }
 527         /* if no user label specified, use ext2 filesystem label if available */
 528         if (spcl.c_label[0] == '\0') {
 529                 const char *lbl;
 530                 if ( (lbl = get_device_label(disk)) != NULL) {
 531                         strncpy(spcl.c_label, lbl, LBLSIZE);
 532                         spcl.c_label[LBLSIZE-1] = '\0';
 533                 }
 534                 else
 535                         strcpy(spcl.c_label, "none");   /* safe strcpy. */
 536         }
 537         sync();
 538         dev_bsize = DEV_BSIZE;
 539         dev_bshift = ffs(dev_bsize) - 1;
 540         if (dev_bsize != (1 << dev_bshift))
 541                 quit("dev_bsize (%d) is not a power of 2", dev_bsize);
 542         tp_bshift = ffs(TP_BSIZE) - 1;
 543         if (TP_BSIZE != (1 << tp_bshift))
 544                 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
 545         maxino = fs->super->s_inodes_count;
 546 #if     0
 547         spcl.c_flags |= DR_NEWINODEFMT;
 548 #endif
 549 #else   /* __linux __*/
 550         if ((diskfd = open(disk, O_RDONLY)) < 0) {
 551                 msg("Cannot open %s\n", disk);
 552                 exit(X_STARTUP);
 553         }
 554         sync();
 555         sblock = (struct fs *)sblock_buf;
 556         bread(SBOFF, (char *) sblock, SBSIZE);
 557         if (sblock->fs_magic != FS_MAGIC)
 558                 quit("bad sblock magic number\n");
 559         dev_bsize = sblock->fs_fsize / fsbtodb(sblock, 1);
 560         dev_bshift = ffs(dev_bsize) - 1;
 561         if (dev_bsize != (1 << dev_bshift))
 562                 quit("dev_bsize (%d) is not a power of 2", dev_bsize);
 563         tp_bshift = ffs(TP_BSIZE) - 1;
 564         if (TP_BSIZE != (1 << tp_bshift))
 565                 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
 566 #ifdef FS_44INODEFMT
 567         if (sblock->fs_inodefmt >= FS_44INODEFMT)
 568                 spcl.c_flags |= DR_NEWINODEFMT;
 569 #endif
 570         maxino = sblock->fs_ipg * sblock->fs_ncg;
 571 #endif  /* __linux__ */
 572         mapsize = roundup(howmany(maxino, NBBY), TP_BSIZE);
 573         usedinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
 574         dumpdirmap = (char *)calloc((unsigned) mapsize, sizeof(char));
 575         dumpinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
 576         if (usedinomap == NULL || dumpdirmap == NULL || dumpinomap == NULL)
 577                 quit("out of memory allocating inode maps\n");
 578         tapesize = 2 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
 579
 580         nonodump = spcl.c_level < honorlevel;
 581
 582         msg("Label: %s\n", spcl.c_label);
 583
 584 #if defined(SIGINFO)
 585         (void)signal(SIGINFO, statussig);
 586 #endif
 587
 588         if (!sizest)
 589                 msg("mapping (Pass I) [regular files]\n");
 590 #ifdef  __linux__
 591         if (directory[0] == 0)
 592                 anydirskipped = mapfiles(maxino, &tapesize);
 593         else
 594                 anydirskipped = mapfilesfromdir(maxino, &tapesize, directory);
 595 #else
 596         anydirskipped = mapfiles(maxino, &tapesize);
 597 #endif
 598
 599         if (!sizest)
 600                 msg("mapping (Pass II) [directories]\n");
 601         while (anydirskipped) {
 602                 anydirskipped = mapdirs(maxino, &tapesize);
 603         }
 604
 605         if (sizest) {
 606                 printf("%.0f\n", ((double)tapesize + 11) * TP_BSIZE);
 607                 exit(X_FINOK);
 608         } /* stop here for size estimate */
 609
 610         if (pipeout || unlimited) {
 611                 tapesize += 11; /* 10 trailer blocks + 1 map header */
 612                 msg("estimated %ld tape blocks.\n", tapesize);
 613         } else {
 614                 double fetapes;
 615
 616                 if (blocksperfile)
 617                         fetapes = (double) tapesize / blocksperfile;
 618                 else if (cartridge) {
 619                         /* Estimate number of tapes, assuming streaming stops at
 620                            the end of each block written, and not in mid-block.
 621                            Assume no erroneous blocks; this can be compensated
 622                            for with an artificially low tape size. */
 623                         fetapes =
 624                         (         (double) tapesize     /* blocks */
 625                                 * TP_BSIZE      /* bytes/block */
 626                                 * (1.0/density) /* 0.1" / byte " */
 627                           +
 628                                   (double) tapesize     /* blocks */
 629                                 * (1.0/ntrec)   /* streaming-stops per block */
 630                                 * 15.48         /* 0.1" / streaming-stop " */
 631                         ) * (1.0 / tsize );     /* tape / 0.1" " */
 632                 } else {
 633                         /* Estimate number of tapes, for old fashioned 9-track
 634                            tape */
 635                         int tenthsperirg = (density == 625) ? 3 : 7;
 636                         fetapes =
 637                         (         (double) tapesize     /* blocks */
 638                                 * TP_BSIZE      /* bytes / block */
 639                                 * (1.0/density) /* 0.1" / byte " */
 640                           +
 641                                   (double) tapesize     /* blocks */
 642                                 * (1.0/ntrec)   /* IRG's / block */
 643                                 * tenthsperirg  /* 0.1" / IRG " */
 644                         ) * (1.0 / tsize );     /* tape / 0.1" " */
 645                 }
 646                 etapes = fetapes;               /* truncating assignment */
 647                 etapes++;
 648                 /* count the dumped inodes map on each additional tape */
 649                 tapesize += (etapes - 1) *
 650                         (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
 651                 tapesize += etapes + 10;        /* headers + 10 trailer blks */
 652                 msg("estimated %ld tape blocks on %3.2f tape(s).\n",
 653                     tapesize, fetapes);
 654         }
 655
 656         /*
 657          * Allocate tape buffer.
 658          */
 659         if (!alloctape())
 660                 quit(
 661         "can't allocate tape buffers - try a smaller blocking factor.\n");
 662
 663         startnewtape(1);
 664 #ifdef __linux__
 665         (void)time4(&(tstart_writing));
 666 #else
 667         (void)time((time_t *)&(tstart_writing));
 668 #endif
 669         dumpmap(usedinomap, TS_CLRI, maxino - 1);
 670
 671         msg("dumping (Pass III) [directories]\n");
 672         dirty = 0;              /* XXX just to get gcc to shut up */
 673         for (map = dumpdirmap, ino = 1; ino < maxino; ino++) {
 674                 if (((ino - 1) % NBBY) == 0)    /* map is offset by 1 */
 675                         dirty = *map++;
 676                 else
 677                         dirty >>= 1;
 678                 if ((dirty & 1) == 0)
 679                         continue;
 680                 /*
 681                  * Skip directory inodes deleted and maybe reallocated
 682                  */
 683                 dp = getino(ino);
 684                 if ((dp->di_mode & IFMT) != IFDIR)
 685                         continue;
 686 #ifdef  __linux__
 687                 /*
 688                  * Skip directory inodes deleted and not yes reallocated...
 689                  */
 690                 if (dp->di_nlink == 0 || dp->di_dtime != 0)
 691                         continue;
 692                 (void)dumpdirino(dp, ino);
 693 #else
 694                 (void)dumpino(dp, ino);
 695 #endif
 696         }
 697
 698         msg("dumping (Pass IV) [regular files]\n");
 699         for (map = dumpinomap, ino = 1; ino < maxino; ino++) {
 700                 if (((ino - 1) % NBBY) == 0)    /* map is offset by 1 */
 701                         dirty = *map++;
 702                 else
 703                         dirty >>= 1;
 704                 if ((dirty & 1) == 0)
 705                         continue;
 706                 /*
 707                  * Skip inodes deleted and reallocated as directories.
 708                  */
 709                 dp = getino(ino);
 710                 if ((dp->di_mode & IFMT) == IFDIR)
 711                         continue;
 712 #ifdef __linux__
 713                 /*
 714                  * No need to check here for deleted and not yes reallocated inodes
 715                  * since this is done in dumpino().
 716                  */
 717 #endif
 718                 (void)dumpino(dp, ino);
 719         }
 720
 721 #ifdef __linux__
 722         (void)time4(&(tend_writing));
 723 #else
 724         (void)time((time_t *)&(tend_writing));
 725 #endif
 726         spcl.c_type = TS_END;
 727         for (i = 0; i < ntrec; i++)
 728                 writeheader(maxino - 1);
 729
 730         tnow = trewind();
 731
 732         if (pipeout)
 733                 msg("%ld tape blocks (%.2fMB)\n", spcl.c_tapea,
 734                         ((double)spcl.c_tapea * TP_BSIZE / 1048576));
 735         else
 736                 msg("%ld tape blocks (%.2fMB) on %d volume(s)\n",
 737                     spcl.c_tapea,
 738                     ((double)spcl.c_tapea * TP_BSIZE / 1048576),
 739                     spcl.c_volume);
 740
 741         /* report dump performance, avoid division through zero */
 742         if (tend_writing - tstart_writing == 0)
 743                 msg("finished in less than a second\n");
 744         else
 745                 msg("finished in %d seconds, throughput %d KBytes/sec\n",
 746                     tend_writing - tstart_writing,
 747                     spcl.c_tapea / (tend_writing - tstart_writing));
 748
 749         putdumptime();
 750 #ifdef __linux__
 751         msg("Date of this level %c dump: %s", level,
 752                 spcl.c_date == 0 ? "the epoch\n" : ctime4(&spcl.c_date));
 753 #else
 754         msg("Date of this level %c dump: %s", level,
 755                 spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date));
 756 #endif
 757         msg("Date this dump completed:  %s", ctime(&tnow));
 758
 759         msg("Average transfer rate: %ld KB/s\n", xferrate / tapeno);
 760         if (compressed) {
 761                 long tapekb = bytes_written / 1024;
 762                 double rate = .0005 + (double) spcl.c_tapea / tapekb;
 763                 msg("Wrote %ldKB uncompressed, %ldKB compressed,"
 764                         " compression ratio %1.3f\n",
 765                         spcl.c_tapea, tapekb, rate);
 766         }
 767
 768         broadcast("DUMP IS DONE!\7\7\n");
 769         msg("DUMP IS DONE\n");
 770         Exit(X_FINOK);
 771         /* NOTREACHED */
 772         return 0;       /* gcc - shut up */
 773 }
 774
 775 static void
 776 usage(void)
 777 {
 778         char white[MAXPATHLEN];
 779         int i;
 780
 781         strncpy(white, __progname, MAXPATHLEN-1);
 782         white[MAXPATHLEN-1] = '\0';
 783         for (i=0; i<MAXPATHLEN; ++i)
 784                 if (white[i] != '\0') white[i] = ' ';
 785
 786         fprintf(stderr,
 787                 "%s %s\n", __progname, _DUMP_VERSION);
 788         fprintf(stderr,
 789                 "usage:\t%s [-0123456789ac"
 790 #ifdef KERBEROS
 791                 "k"
 792 #endif
 793                 "MnSu"
 794 #ifdef HAVE_ZLIB
 795                 "z"
 796 #endif
 797                 "] [-B records] [-b blocksize] [-d density]\n"
 798                 "\t%s [-e inode#] [-f file] [-h level] [-s feet] [-T date] filesystem\n"
 799                 "\t%s [-W | -w]\n", __progname, white, __progname);
 800         exit(X_STARTUP);
 801 }
 802
 803 /*
 804  * Pick up a numeric argument.  It must be nonnegative and in the given
 805  * range (except that a vmax of 0 means unlimited).
 806  */
 807 static long
 808 numarg(const char *meaning, long vmin, long vmax)
 809 {
 810         char *p;
 811         long val;
 812
 813         val = strtol(optarg, &p, 10);
 814         if (*p)
 815                 errx(X_STARTUP, "illegal %s -- %s", meaning, optarg);
 816         if (val < vmin || (vmax && val > vmax))
 817                 errx(X_STARTUP, "%s must be between %ld and %ld", meaning, vmin, vmax);
 818         return (val);
 819 }
 820
 821 void
 822 sig(int signo)
 823 {
 824         switch(signo) {
 825         case SIGALRM:
 826         case SIGBUS:
 827         case SIGFPE:
 828         case SIGHUP:
 829         case SIGTERM:
 830         case SIGTRAP:
 831                 if (pipeout)
 832                         quit("Signal on pipe: cannot recover\n");
 833                 msg("Rewriting attempted as response to unknown signal.\n");
 834                 (void)fflush(stderr);
 835                 (void)fflush(stdout);
 836                 close_rewind();
 837                 exit(X_REWRITE);
 838                 /* NOTREACHED */
 839         case SIGSEGV:
 840                 msg("SIGSEGV: ABORTING!\n");
 841                 (void)signal(SIGSEGV, SIG_DFL);
 842                 (void)kill(0, SIGSEGV);
 843                 /* NOTREACHED */
 844         }
 845 }
 846
 847 const char *
 848 rawname(const char *cp)
 849 {
 850 #ifdef  __linux__
 851         return cp;
 852 #else   /* __linux__ */
 853         static char rawbuf[MAXPATHLEN];
 854         char *dp = strrchr(cp, '/');
 855
 856         if (dp == NULL)
 857                 return (NULL);
 858         (void)strncpy(rawbuf, cp, min(dp-cp, MAXPATHLEN - 1));
 859         rawbuf[min(dp-cp, MAXPATHLEN-1)] = '\0';
 860         (void)strncat(rawbuf, "/r", MAXPATHLEN - 1 - strlen(rawbuf));
 861         (void)strncat(rawbuf, dp + 1, MAXPATHLEN - 1 - strlen(rawbuf));
 862         return (rawbuf);
 863 #endif  /* __linux__ */
 864 }
 865
 866 /*
 867  * obsolete --
 868  *      Change set of key letters and ordered arguments into something
 869  *      getopt(3) will like.
 870  */
 871 static void
 872 obsolete(int *argcp, char **argvp[])
 873 {
 874         int argc, flags;
 875         char *ap, **argv, *flagsp=NULL, **nargv, *p=NULL;
 876
 877         /* Setup. */
 878         argv = *argvp;
 879         argc = *argcp;
 880
 881         /* Return if no arguments or first argument has leading dash. */
 882         ap = argv[1];
 883         if (argc == 1 || *ap == '-')
 884                 return;
 885
 886         /* Allocate space for new arguments. */
 887         if ((*argvp = nargv = malloc((argc + 1) * sizeof(char *))) == NULL ||
 888             (p = flagsp = malloc(strlen(ap) + 2)) == NULL)
 889                 err(X_STARTUP, "malloc new args");
 890
 891         *nargv++ = *argv;
 892         argv += 2;
 893
 894         for (flags = 0; *ap; ++ap) {
 895                 switch (*ap) {
 896                 case 'B':
 897                 case 'b':
 898                 case 'd':
 899                 case 'e':
 900                 case 'f':
 901                 case 'F':
 902                 case 'h':
 903                 case 'L':
 904                 case 's':
 905                 case 'T':
 906                         if (*argv == NULL) {
 907                                 warnx("option requires an argument -- %c", *ap);
 908                                 usage();
 909                         }
 910                         if ((nargv[0] = malloc(strlen(*argv) + 2 + 1)) == NULL)
 911                                 err(X_STARTUP, "malloc arg");
 912                         nargv[0][0] = '-';
 913                         nargv[0][1] = *ap;
 914                         (void)strcpy(&nargv[0][2], *argv);
 915                         ++argv;
 916                         ++nargv;
 917                         break;
 918                 default:
 919                         if (!flags) {
 920                                 *p++ = '-';
 921                                 flags = 1;
 922                         }
 923                         *p++ = *ap;
 924                         break;
 925                 }
 926         }
 927
 928         /* Terminate flags. */
 929         if (flags) {
 930                 *p = '\0';
 931                 *nargv++ = flagsp;
 932         }
 933
 934         /* Copy remaining arguments. */
 935         while ((*nargv++ = *argv++));
 936
 937         /* Update argument count. */
 938         *argcp = nargv - *argvp - 1;
 939 }