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@cybercable.fr>, 1999-2000
   6  */
   7
   8 /*-
   9  * Copyright (c) 1980, 1991, 1993, 1994
  10  *      The Regents of the University of California.  All rights reserved.
  11  *
  12  * Redistribution and use in source and binary forms, with or without
  13  * modification, are permitted provided that the following conditions
  14  * are met:
  15  * 1. Redistributions of source code must retain the above copyright
  16  *    notice, this list of conditions and the following disclaimer.
  17  * 2. Redistributions in binary form must reproduce the above copyright
  18  *    notice, this list of conditions and the following disclaimer in the
  19  *    documentation and/or other materials provided with the distribution.
  20  * 3. All advertising materials mentioning features or use of this software
  21  *    must display the following acknowledgement:
  22  *      This product includes software developed by the University of
  23  *      California, Berkeley and its contributors.
  24  * 4. Neither the name of the University nor the names of its contributors
  25  *    may be used to endorse or promote products derived from this software
  26  *    without specific prior written permission.
  27  *
  28  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  29  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  30  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  31  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  32  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  33  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  34  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  35  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  36  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  37  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  38  * SUCH DAMAGE.
  39  */
  40
  41 #ifndef lint
  42 static const char rcsid[] =
  43         "$Id: main.c,v 1.17 2000/03/01 10:16:05 stelian Exp $";
  44 #endif /* not lint */
  45
  46 #include <sys/param.h>
  47 #include <sys/time.h>
  48 #ifdef __linux__
  49 #include <linux/ext2_fs.h>
  50 #include <sys/stat.h>
  51 #include <bsdcompat.h>
  52 #else
  53 #ifdef sunos
  54 #include <sys/vnode.h>
  55
  56 #include <ufs/inode.h>
  57 #include <ufs/fs.h>
  58 #else
  59 #include <ufs/ufs/dinode.h>
  60 #include <ufs/ffs/fs.h>
  61 #endif
  62 #endif
  63
  64 #include <protocols/dumprestore.h>
  65
  66 #include <ctype.h>
  67 #include <compaterr.h>
  68 #include <fcntl.h>
  69 #include <fstab.h>
  70 #include <signal.h>
  71 #include <stdio.h>
  72 #include <stdlib.h>
  73 #include <string.h>
  74 #include <unistd.h>
  75
  76 #ifdef __linux__
  77 #include <ext2fs/ext2fs.h>
  78 #endif
  79
  80 #include "dump.h"
  81 #include "pathnames.h"
  82
  83 #ifndef SBOFF
  84 #define SBOFF (SBLOCK * DEV_BSIZE)
  85 #endif
  86
  87 int     notify = 0;     /* notify operator flag */
  88 int     blockswritten = 0;      /* number of blocks written on current tape */
  89 int     tapeno = 0;     /* current tape number */
  90 int     density = 0;    /* density in bytes/0.1" " <- this is for hilit19 */
  91 int     ntrec = NTREC;  /* # tape blocks in each tape record */
  92 int     cartridge = 0;  /* Assume non-cartridge tape */
  93 int     dokerberos = 0; /* Use Kerberos authentication */
  94 long    dev_bsize = 1;  /* recalculated below */
  95 long    blocksperfile;  /* output blocks per file */
  96 char    *host = NULL;   /* remote host (if any) */
  97 int     sizest = 0;     /* return size estimate only */
  98
  99 #ifdef  __linux__
 100 char    *__progname;
 101 #endif
 102
 103 int     maxbsize = 64*1024;     /* XXX MAXBSIZE from sys/param.h */
 104 static long numarg __P((const char *, long, long));
 105 static void obsolete __P((int *, char **[]));
 106 static void usage __P((void));
 107
 108 ino_t iexclude_list[IEXCLUDE_MAXNUM];   /* the inode exclude list */
 109 int iexclude_num = 0;                   /* number of elements in the list */
 110
 111 int
 112 main(int argc, char *argv[])
 113 {
 114         register ino_t ino;
 115         register int dirty;
 116         register struct dinode *dp;
 117         register struct fstab *dt;
 118         register char *map;
 119         register int ch;
 120         int i, anydirskipped, bflag = 0, Tflag = 0, honorlevel = 1;
 121         ino_t maxino;
 122 #ifdef  __linux__
 123         errcode_t retval;
 124         char directory[MAXPATHLEN];
 125         char pathname[MAXPATHLEN];
 126 #endif
 127         time_t tnow;
 128         char labelstr[LBLSIZE];
 129
 130         spcl.c_date = 0;
 131 #ifdef  __linux__
 132         (void)time4(&spcl.c_date);
 133 #else
 134         (void)time((time_t *)&spcl.c_date);
 135 #endif
 136
 137 #ifdef __linux__
 138         __progname = argv[0];
 139         directory[0] = 0;
 140         initialize_ext2_error_table();
 141 #endif
 142
 143         tsize = 0;      /* Default later, based on 'c' option for cart tapes */
 144         if ((tapeprefix = getenv("TAPE")) == NULL)
 145                 tapeprefix = _PATH_DEFTAPE;
 146         dumpdates = _PATH_DUMPDATES;
 147         strcpy(labelstr, "none");       /* XXX safe strcpy. */
 148         if (TP_BSIZE / DEV_BSIZE == 0 || TP_BSIZE % DEV_BSIZE != 0)
 149                 quit("TP_BSIZE must be a multiple of DEV_BSIZE\n");
 150         level = '0';
 151
 152         if (argc < 2)
 153                 usage();
 154
 155         obsolete(&argc, &argv);
 156 #ifdef KERBEROS
 157 #define optstring "0123456789aB:b:cd:e:f:h:kL:Mns:ST:uWw"
 158 #else
 159 #define optstring "0123456789aB:b:cd:e:f:h:L:Mns:ST:uWw"
 160 #endif
 161         while ((ch = getopt(argc, argv, optstring)) != -1)
 162 #undef optstring
 163                 switch (ch) {
 164                 /* dump level */
 165                 case '0': case '1': case '2': case '3': case '4':
 166                 case '5': case '6': case '7': case '8': case '9':
 167                         level = ch;
 168                         break;
 169
 170                 case 'a':               /* `auto-size', Write to EOM. */
 171                         unlimited = 1;
 172                         break;
 173
 174                 case 'B':               /* blocks per output file */
 175                         blocksperfile = numarg("number of blocks per file",
 176                             1L, 0L);
 177                         break;
 178
 179                 case 'b':               /* blocks per tape write */
 180                         ntrec = numarg("number of blocks per write",
 181                             1L, 1000L);
 182                         if (ntrec > maxbsize/1024) {
 183                                 msg("Please choose a blocksize <= %dKB\n",
 184                                         maxbsize/1024);
 185                                 exit(X_STARTUP);
 186                         }
 187                         bflag = 1;
 188                         break;
 189
 190                 case 'c':               /* Tape is cart. not 9-track */
 191                         cartridge = 1;
 192                         break;
 193
 194                 case 'd':               /* density, in bits per inch */
 195                         density = numarg("density", 10L, 327670L) / 10;
 196                         if (density >= 625 && !bflag)
 197                                 ntrec = HIGHDENSITYTREC;
 198                         break;
 199
 200                                         /* 04-Feb-00 ILC */
 201                 case 'e':               /* exclude an inode */
 202                         iexclude_list[iexclude_num++] =
 203                           numarg("inode to exclude",0L,0L);
 204                         msg("Added %d to exclude list\n",
 205                             iexclude_list[iexclude_num-1]);
 206                         break;
 207
 208                 case 'f':               /* output file */
 209                         tapeprefix = optarg;
 210                         break;
 211
 212                 case 'h':
 213                         honorlevel = numarg("honor level", 0L, 10L);
 214                         break;
 215
 216 #ifdef KERBEROS
 217                 case 'k':
 218                         dokerberos = 1;
 219                         break;
 220 #endif
 221
 222                 case 'L':
 223                         /*
 224                          * Note that although there are LBLSIZE characters,
 225                          * the last must be '\0', so the limit on strlen()
 226                          * is really LBLSIZE-1.
 227                          */
 228                         strncpy(labelstr, optarg, LBLSIZE);
 229                         labelstr[LBLSIZE-1] = '\0';
 230                         if (strlen(optarg) > LBLSIZE-1) {
 231                                 msg(
 232                 "WARNING Label `%s' is larger than limit of %d characters.\n",
 233                                     optarg, LBLSIZE-1);
 234                                 msg("WARNING: Using truncated label `%s'.\n",
 235                                     labelstr);
 236                         }
 237                         break;
 238
 239                 case 'M':               /* multi-volume flag */
 240                         Mflag = 1;
 241                         break;
 242
 243                 case 'n':               /* notify operators */
 244                         notify = 1;
 245                         break;
 246
 247                 case 's':               /* tape size, feet */
 248                         tsize = numarg("tape size", 1L, 0L) * 12 * 10;
 249                         break;
 250
 251                 case 'S':
 252                         sizest = 1;     /* return size estimate only */
 253                         break;
 254
 255                 case 'T':               /* time of last dump */
 256                         spcl.c_ddate = unctime(optarg);
 257                         if (spcl.c_ddate < 0) {
 258                                 (void)fprintf(stderr, "bad time \"%s\"\n",
 259                                     optarg);
 260                                 exit(X_STARTUP);
 261                         }
 262                         Tflag = 1;
 263                         lastlevel = '?';
 264                         break;
 265
 266                 case 'u':               /* update dumpdates */
 267                         uflag = 1;
 268                         break;
 269
 270                 case 'W':               /* what to do */
 271                 case 'w':
 272                         lastdump(ch);
 273                         exit(X_FINOK);  /* do nothing else */
 274
 275                 default:
 276                         usage();
 277                 }
 278         argc -= optind;
 279         argv += optind;
 280
 281         if (argc < 1) {
 282                 (void)fprintf(stderr, "Must specify disk or filesystem\n");
 283                 exit(X_STARTUP);
 284         }
 285         disk = *argv++;
 286         if (strlen(disk) > MAXPATHLEN) {
 287                 (void)fprintf(stderr, "Disk or filesystem name too long: %s\n", disk);
 288                 exit(X_STARTUP);
 289         }
 290         argc--;
 291         if (argc >= 1) {
 292                 (void)fprintf(stderr, "Unknown arguments to dump:");
 293                 while (argc--)
 294                         (void)fprintf(stderr, " %s", *argv++);
 295                 (void)fprintf(stderr, "\n");
 296                 exit(X_STARTUP);
 297         }
 298         if (Tflag && uflag) {
 299                 (void)fprintf(stderr,
 300                     "You cannot use the T and u flags together.\n");
 301                 exit(X_STARTUP);
 302         }
 303         if (strcmp(tapeprefix, "-") == 0) {
 304                 pipeout++;
 305                 tapeprefix = "standard output";
 306         }
 307
 308         if (blocksperfile)
 309                 blocksperfile = blocksperfile / ntrec * ntrec; /* round down */
 310         else if (!unlimited) {
 311                 /*
 312                  * Determine how to default tape size and density
 313                  *
 314                  *              density                         tape size
 315                  * 9-track      1600 bpi (160 bytes/.1")        2300 ft.
 316                  * 9-track      6250 bpi (625 bytes/.1")        2300 ft.
 317                  * cartridge    8000 bpi (100 bytes/.1")        1700 ft.
 318                  *                                              (450*4 - slop)
 319                  * hilit19 hits again: "
 320                  */
 321                 if (density == 0)
 322                         density = cartridge ? 100 : 160;
 323                 if (tsize == 0)
 324                         tsize = cartridge ? 1700L*120L : 2300L*120L;
 325         }
 326
 327         if (strchr(tapeprefix, ':')) {
 328                 host = tapeprefix;
 329                 tapeprefix = strchr(host, ':');
 330                 *tapeprefix++ = '\0';
 331 #ifdef RDUMP
 332                 if (index(tapeprefix, '\n')) {
 333                     (void)fprintf(stderr, "invalid characters in tape\n");
 334                     exit(X_STARTUP);
 335                 }
 336                 if (rmthost(host) == 0)
 337                         exit(X_STARTUP);
 338 #else
 339                 (void)fprintf(stderr, "remote dump not enabled\n");
 340                 exit(X_STARTUP);
 341 #endif
 342         }
 343         (void)setuid(getuid()); /* rmthost() is the only reason to be setuid */
 344
 345         if (signal(SIGHUP, SIG_IGN) != SIG_IGN)
 346                 signal(SIGHUP, sig);
 347         if (signal(SIGTRAP, SIG_IGN) != SIG_IGN)
 348                 signal(SIGTRAP, sig);
 349         if (signal(SIGFPE, SIG_IGN) != SIG_IGN)
 350                 signal(SIGFPE, sig);
 351         if (signal(SIGBUS, SIG_IGN) != SIG_IGN)
 352                 signal(SIGBUS, sig);
 353         if (signal(SIGSEGV, SIG_IGN) != SIG_IGN)
 354                 signal(SIGSEGV, sig);
 355         if (signal(SIGTERM, SIG_IGN) != SIG_IGN)
 356                 signal(SIGTERM, sig);
 357         if (signal(SIGINT, interrupt) == SIG_IGN)
 358                 signal(SIGINT, SIG_IGN);
 359         set_operators();        /* /etc/group snarfed */
 360         getfstab();             /* /etc/fstab snarfed */
 361         /*
 362          *      disk may end in / and this can confuse
 363          *      fstabsearch.
 364          */
 365         if (strlen(disk) > 1 && disk[strlen(disk) - 1] == '/')
 366           disk[strlen(disk) - 1] = '\0';
 367         /*
 368          *      disk can be either the full special file name,
 369          *      the suffix of the special file name,
 370          *      the special name missing the leading '/',
 371          *      the file system name with or without the leading '/'.
 372          */
 373         if ((dt = fstabsearch(disk)) != NULL) {
 374                 disk = rawname(dt->fs_spec);
 375                 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
 376                 (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN);
 377 #ifdef  __linux__
 378         } else {
 379                 /*
 380                  * The argument was not found in the fstab
 381                  * assume that this is a subtree and search for it
 382                  */
 383 #ifdef  HAVE_REALPATH
 384                 if (realpath(disk, pathname) == NULL)
 385 #endif
 386                         strcpy(pathname, disk);
 387                 dt = fstabsearchdir(pathname, directory);
 388                 if (dt != NULL) {
 389                         char name[MAXPATHLEN];
 390                         (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
 391                         (void)sprintf(name, "%s (dir %s)",
 392                                       dt->fs_file, directory);
 393                         (void)strncpy(spcl.c_filesys, name, NAMELEN);
 394                         disk = rawname(dt->fs_spec);
 395                 } else {
 396                         (void)strncpy(spcl.c_dev, disk, NAMELEN);
 397                         (void)strncpy(spcl.c_filesys, "an unlisted file system",
 398                             NAMELEN);
 399                 }
 400         }
 401 #else
 402         } else {
 403                 (void)strncpy(spcl.c_dev, disk, NAMELEN);
 404                 (void)strncpy(spcl.c_filesys, "an unlisted file system",
 405                     NAMELEN);
 406         }
 407 #endif
 408         spcl.c_dev[NAMELEN-1]='\0';
 409         spcl.c_filesys[NAMELEN-1]='\0';
 410         (void)strncpy(spcl.c_label, labelstr, sizeof(spcl.c_label) - 1);
 411         (void)gethostname(spcl.c_host, NAMELEN);
 412         spcl.c_level = level - '0';
 413         spcl.c_type = TS_TAPE;
 414         if (!Tflag)
 415                 getdumptime(uflag);             /* dumpdates snarfed */
 416
 417         if (spcl.c_ddate == 0 && spcl.c_level) {
 418                 msg("WARNING: There is no inferior level dump on this filesystem\n");
 419                 msg("WARNING: Assuming a level 0 dump by default\n");
 420                 level = '0';
 421                 spcl.c_level = 0;
 422         }
 423
 424         if (Mflag)
 425                 snprintf(tape, MAXPATHLEN, "%s%03d", tapeprefix, tapeno + 1);
 426         else
 427                 strncpy(tape, tapeprefix, MAXPATHLEN);
 428         tape[MAXPATHLEN - 1] = '\0';
 429
 430         if (!sizest) {
 431
 432                 msg("Date of this level %c dump: %s", level,
 433 #ifdef  __linux__
 434                         spcl.c_date == 0 ? "the epoch\n" : ctime4(&spcl.c_date));
 435 #else
 436                         spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date));
 437 #endif
 438                 msg("Date of last level %c dump: %s", lastlevel,
 439 #ifdef  __linux__
 440                         spcl.c_ddate == 0 ? "the epoch\n" : ctime4(&spcl.c_ddate));
 441 #else
 442                         spcl.c_ddate == 0 ? "the epoch\n" : ctime(&spcl.c_ddate));
 443 #endif
 444                 msg("Dumping %s (%s) ", disk, spcl.c_filesys);
 445                 if (host)
 446                         msgtail("to %s on host %s\n", tape, host);
 447                 else
 448                         msgtail("to %s\n", tape);
 449                 msg("Label: %s\n", labelstr);
 450
 451         } /* end of size estimate */
 452
 453 #ifdef  __linux__
 454         retval = dump_fs_open(disk, &fs);
 455         if (retval) {
 456                 com_err(disk, retval, "while opening filesystem");
 457                 if (retval == EXT2_ET_REV_TOO_HIGH)
 458                         printf ("Get a newer version of dump!\n");
 459                 exit(X_STARTUP);
 460         }
 461         if (fs->super->s_rev_level > DUMP_CURRENT_REV) {
 462                 com_err(disk, retval, "while opening filesystem");
 463                 printf ("Get a newer version of dump!\n");
 464                 exit(X_STARTUP);
 465         }
 466         if ((diskfd = open(disk, O_RDONLY)) < 0) {
 467                 msg("Cannot open %s\n", disk);
 468                 exit(X_STARTUP);
 469         }
 470         sync();
 471         dev_bsize = DEV_BSIZE;
 472         dev_bshift = ffs(dev_bsize) - 1;
 473         if (dev_bsize != (1 << dev_bshift))
 474                 quit("dev_bsize (%d) is not a power of 2", dev_bsize);
 475         tp_bshift = ffs(TP_BSIZE) - 1;
 476         if (TP_BSIZE != (1 << tp_bshift))
 477                 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
 478         maxino = fs->super->s_inodes_count;
 479 #if     0
 480         spcl.c_flags |= DR_NEWINODEFMT;
 481 #endif
 482 #else   /* __linux __*/
 483         if ((diskfd = open(disk, O_RDONLY)) < 0) {
 484                 msg("Cannot open %s\n", disk);
 485                 exit(X_STARTUP);
 486         }
 487         sync();
 488         sblock = (struct fs *)sblock_buf;
 489         bread(SBOFF, (char *) sblock, SBSIZE);
 490         if (sblock->fs_magic != FS_MAGIC)
 491                 quit("bad sblock magic number\n");
 492         dev_bsize = sblock->fs_fsize / fsbtodb(sblock, 1);
 493         dev_bshift = ffs(dev_bsize) - 1;
 494         if (dev_bsize != (1 << dev_bshift))
 495                 quit("dev_bsize (%d) is not a power of 2", dev_bsize);
 496         tp_bshift = ffs(TP_BSIZE) - 1;
 497         if (TP_BSIZE != (1 << tp_bshift))
 498                 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
 499 #ifdef FS_44INODEFMT
 500         if (sblock->fs_inodefmt >= FS_44INODEFMT)
 501                 spcl.c_flags |= DR_NEWINODEFMT;
 502 #endif
 503         maxino = sblock->fs_ipg * sblock->fs_ncg;
 504 #endif  /* __linux__ */
 505         mapsize = roundup(howmany(maxino, NBBY), TP_BSIZE);
 506         usedinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
 507         dumpdirmap = (char *)calloc((unsigned) mapsize, sizeof(char));
 508         dumpinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
 509         tapesize = 3 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
 510
 511         nonodump = spcl.c_level < honorlevel;
 512
 513 #if defined(SIGINFO)
 514         (void)signal(SIGINFO, statussig);
 515 #endif
 516
 517         if (!sizest)
 518                 msg("mapping (Pass I) [regular files]\n");
 519 #ifdef  __linux__
 520         if (directory[0] == 0)
 521                 anydirskipped = mapfiles(maxino, &tapesize);
 522         else
 523                 anydirskipped = mapfilesfromdir(maxino, &tapesize, directory);
 524 #else
 525         anydirskipped = mapfiles(maxino, &tapesize);
 526 #endif
 527
 528         if (!sizest)
 529                 msg("mapping (Pass II) [directories]\n");
 530         while (anydirskipped) {
 531                 anydirskipped = mapdirs(maxino, &tapesize);
 532         }
 533
 534         if (sizest) {
 535                 printf("%.0f\n", ((double)tapesize + 10) * TP_BSIZE);
 536                 exit(X_FINOK);
 537         } /* stop here for size estimate */
 538
 539         if (pipeout || unlimited) {
 540                 tapesize += 10; /* 10 trailer blocks */
 541                 msg("estimated %ld tape blocks.\n", tapesize);
 542         } else {
 543                 double fetapes;
 544
 545                 if (blocksperfile)
 546                         fetapes = (double) tapesize / blocksperfile;
 547                 else if (cartridge) {
 548                         /* Estimate number of tapes, assuming streaming stops at
 549                            the end of each block written, and not in mid-block.
 550                            Assume no erroneous blocks; this can be compensated
 551                            for with an artificially low tape size. */
 552                         fetapes =
 553                         (         (double) tapesize     /* blocks */
 554                                 * TP_BSIZE      /* bytes/block */
 555                                 * (1.0/density) /* 0.1" / byte " */
 556                           +
 557                                   (double) tapesize     /* blocks */
 558                                 * (1.0/ntrec)   /* streaming-stops per block */
 559                                 * 15.48         /* 0.1" / streaming-stop " */
 560                         ) * (1.0 / tsize );     /* tape / 0.1" " */
 561                 } else {
 562                         /* Estimate number of tapes, for old fashioned 9-track
 563                            tape */
 564                         int tenthsperirg = (density == 625) ? 3 : 7;
 565                         fetapes =
 566                         (         (double) tapesize     /* blocks */
 567                                 * TP_BSIZE      /* bytes / block */
 568                                 * (1.0/density) /* 0.1" / byte " */
 569                           +
 570                                   (double) tapesize     /* blocks */
 571                                 * (1.0/ntrec)   /* IRG's / block */
 572                                 * tenthsperirg  /* 0.1" / IRG " */
 573                         ) * (1.0 / tsize );     /* tape / 0.1" " */
 574                 }
 575                 etapes = fetapes;               /* truncating assignment */
 576                 etapes++;
 577                 /* count the dumped inodes map on each additional tape */
 578                 tapesize += (etapes - 1) *
 579                         (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
 580                 tapesize += etapes + 10;        /* headers + 10 trailer blks */
 581                 msg("estimated %ld tape blocks on %3.2f tape(s).\n",
 582                     tapesize, fetapes);
 583         }
 584
 585         /*
 586          * Allocate tape buffer.
 587          */
 588         if (!alloctape())
 589                 quit(
 590         "can't allocate tape buffers - try a smaller blocking factor.\n");
 591
 592         startnewtape(1);
 593 #ifdef __linux__
 594         (void)time4(&(tstart_writing));
 595 #else
 596         (void)time((time_t *)&(tstart_writing));
 597 #endif
 598         dumpmap(usedinomap, TS_CLRI, maxino - 1);
 599
 600         msg("dumping (Pass III) [directories]\n");
 601         dirty = 0;              /* XXX just to get gcc to shut up */
 602         for (map = dumpdirmap, ino = 1; ino < maxino; ino++) {
 603                 if (((ino - 1) % NBBY) == 0)    /* map is offset by 1 */
 604                         dirty = *map++;
 605                 else
 606                         dirty >>= 1;
 607                 if ((dirty & 1) == 0)
 608                         continue;
 609                 /*
 610                  * Skip directory inodes deleted and maybe reallocated
 611                  */
 612                 dp = getino(ino);
 613                 if ((dp->di_mode & IFMT) != IFDIR)
 614                         continue;
 615 #ifdef  __linux__
 616                 /*
 617                  * Skip directory inodes deleted and not yes reallocated...
 618                  */
 619                 if (dp->di_nlink == 0 || dp->di_dtime != 0)
 620                         continue;
 621                 (void)dumpdirino(dp, ino);
 622 #else
 623                 (void)dumpino(dp, ino);
 624 #endif
 625         }
 626
 627         msg("dumping (Pass IV) [regular files]\n");
 628         for (map = dumpinomap, ino = 1; ino < maxino; ino++) {
 629                 if (((ino - 1) % NBBY) == 0)    /* map is offset by 1 */
 630                         dirty = *map++;
 631                 else
 632                         dirty >>= 1;
 633                 if ((dirty & 1) == 0)
 634                         continue;
 635                 /*
 636                  * Skip inodes deleted and reallocated as directories.
 637                  */
 638                 dp = getino(ino);
 639                 if ((dp->di_mode & IFMT) == IFDIR)
 640                         continue;
 641 #ifdef __linux__
 642                 /*
 643                  * No need to check here for deleted and not yes reallocated inodes
 644                  * since this is done in dumpino().
 645                  */
 646 #endif
 647                 (void)dumpino(dp, ino);
 648         }
 649
 650 #ifdef __linux__
 651         (void)time4(&(tend_writing));
 652 #else
 653         (void)time((time_t *)&(tend_writing));
 654 #endif
 655         spcl.c_type = TS_END;
 656         for (i = 0; i < ntrec; i++)
 657                 writeheader(maxino - 1);
 658         if (pipeout)
 659                 msg("DUMP: %ld tape blocks\n", spcl.c_tapea);
 660         else
 661                 msg("DUMP: %ld tape blocks on %d volumes(s)\n",
 662                     spcl.c_tapea, spcl.c_volume);
 663
 664         /* report dump performance, avoid division through zero */
 665         if (tend_writing - tstart_writing == 0)
 666                 msg("finished in less than a second\n");
 667         else
 668                 msg("finished in %d seconds, throughput %d KBytes/sec\n",
 669                     tend_writing - tstart_writing,
 670                     spcl.c_tapea / (tend_writing - tstart_writing));
 671
 672         tnow = do_stats();
 673         putdumptime();
 674 #ifdef __linux__
 675         msg("DUMP: Date of this level %c dump: %s", level,
 676                 spcl.c_date == 0 ? "the epoch\n" : ctime4(&spcl.c_date));
 677 #else
 678         msg("DUMP: Date of this level %c dump: %s", level,
 679                 spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date));
 680 #endif
 681         msg("DUMP: Date this dump completed:  %s", ctime(&tnow));
 682
 683         msg("DUMP: Average transfer rate: %ld KB/s\n", xferrate / tapeno);
 684
 685         trewind();
 686         broadcast("DUMP IS DONE!\7\7\n");
 687         msg("DUMP IS DONE\n");
 688         Exit(X_FINOK);
 689         /* NOTREACHED */
 690         return 0;       /* gcc - shut up */
 691 }
 692
 693 static void
 694 usage(void)
 695 {
 696         char white[MAXPATHLEN];
 697         int i;
 698
 699         strncpy(white, __progname, MAXPATHLEN-1);
 700         white[MAXPATHLEN-1] = '\0';
 701         for (i=0; i<MAXPATHLEN; ++i)
 702                 if (white[i] != '\0') white[i] = ' ';
 703
 704         fprintf(stderr,
 705                 "%s %s\n", __progname, _DUMP_VERSION);
 706         fprintf(stderr,
 707                 "usage:\t%s [-0123456789ac"
 708 #ifdef KERBEROS
 709                 "k"
 710 #endif
 711                 "MnSu] [-B records] [-b blocksize] [-d density]\n"
 712                 "\t%s [-e inode#] [-f file] [-h level] [-s feet] [-T date] filesystem\n"
 713                 "\t%s [-W | -w]\n", __progname, white, __progname);
 714         exit(X_STARTUP);
 715 }
 716
 717 /*
 718  * Pick up a numeric argument.  It must be nonnegative and in the given
 719  * range (except that a vmax of 0 means unlimited).
 720  */
 721 static long
 722 numarg(const char *meaning, long vmin, long vmax)
 723 {
 724         char *p;
 725         long val;
 726
 727         val = strtol(optarg, &p, 10);
 728         if (*p)
 729                 errx(X_STARTUP, "illegal %s -- %s", meaning, optarg);
 730         if (val < vmin || (vmax && val > vmax))
 731                 errx(X_STARTUP, "%s must be between %ld and %ld", meaning, vmin, vmax);
 732         return (val);
 733 }
 734
 735 void
 736 sig(int signo)
 737 {
 738         switch(signo) {
 739         case SIGALRM:
 740         case SIGBUS:
 741         case SIGFPE:
 742         case SIGHUP:
 743         case SIGTERM:
 744         case SIGTRAP:
 745                 if (pipeout)
 746                         quit("Signal on pipe: cannot recover\n");
 747                 msg("Rewriting attempted as response to unknown signal.\n");
 748                 (void)fflush(stderr);
 749                 (void)fflush(stdout);
 750                 close_rewind();
 751                 exit(X_REWRITE);
 752                 /* NOTREACHED */
 753         case SIGSEGV:
 754                 msg("SIGSEGV: ABORTING!\n");
 755                 (void)signal(SIGSEGV, SIG_DFL);
 756                 (void)kill(0, SIGSEGV);
 757                 /* NOTREACHED */
 758         }
 759 }
 760
 761 char *
 762 rawname(char *cp)
 763 {
 764 #ifdef  __linux__
 765         return cp;
 766 #else   /* __linux__ */
 767         static char rawbuf[MAXPATHLEN];
 768         char *dp = strrchr(cp, '/');
 769
 770         if (dp == NULL)
 771                 return (NULL);
 772         *dp = '\0';
 773         (void)strncpy(rawbuf, cp, MAXPATHLEN - 1);
 774         rawbuf[MAXPATHLEN-1] = '\0';
 775         *dp = '/';
 776         (void)strncat(rawbuf, "/r", MAXPATHLEN - 1 - strlen(rawbuf));
 777         (void)strncat(rawbuf, dp + 1, MAXPATHLEN - 1 - strlen(rawbuf));
 778         return (rawbuf);
 779 #endif  /* __linux__ */
 780 }
 781
 782 /*
 783  * obsolete --
 784  *      Change set of key letters and ordered arguments into something
 785  *      getopt(3) will like.
 786  */
 787 static void
 788 obsolete(int *argcp, char **argvp[])
 789 {
 790         int argc, flags;
 791         char *ap, **argv, *flagsp=NULL, **nargv, *p=NULL;
 792
 793         /* Setup. */
 794         argv = *argvp;
 795         argc = *argcp;
 796
 797         /* Return if no arguments or first argument has leading dash. */
 798         ap = argv[1];
 799         if (argc == 1 || *ap == '-')
 800                 return;
 801
 802         /* Allocate space for new arguments. */
 803         if ((*argvp = nargv = malloc((argc + 1) * sizeof(char *))) == NULL ||
 804             (p = flagsp = malloc(strlen(ap) + 2)) == NULL)
 805                 err(X_STARTUP, "malloc new args");
 806
 807         *nargv++ = *argv;
 808         argv += 2;
 809
 810         for (flags = 0; *ap; ++ap) {
 811                 switch (*ap) {
 812                 case 'B':
 813                 case 'b':
 814                 case 'd':
 815                 case 'f':
 816                 case 'h':
 817                 case 's':
 818                 case 'T':
 819                         if (*argv == NULL) {
 820                                 warnx("option requires an argument -- %c", *ap);
 821                                 usage();
 822                         }
 823                         if ((nargv[0] = malloc(strlen(*argv) + 2 + 1)) == NULL)
 824                                 err(X_STARTUP, "malloc arg");
 825                         nargv[0][0] = '-';
 826                         nargv[0][1] = *ap;
 827                         (void)strcpy(&nargv[0][2], *argv);
 828                         ++argv;
 829                         ++nargv;
 830                         break;
 831                 default:
 832                         if (!flags) {
 833                                 *p++ = '-';
 834                                 flags = 1;
 835                         }
 836                         *p++ = *ap;
 837                         break;
 838                 }
 839         }
 840
 841         /* Terminate flags. */
 842         if (flags) {
 843                 *p = '\0';
 844                 *nargv++ = flagsp;
 845         }
 846
 847         /* Copy remaining arguments. */
 848         while ((*nargv++ = *argv++));
 849
 850         /* Update argument count. */
 851         *argcp = nargv - *argvp - 1;
 852 }