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
   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 1.9 1999/11/22 19:08:50 tiniou 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 int
 109 main(int argc, char *argv[])
 110 {
 111         register ino_t ino;
 112         register int dirty;
 113         register struct dinode *dp;
 114         register struct fstab *dt;
 115         register char *map;
 116         register int ch;
 117         int i, anydirskipped, bflag = 0, Tflag = 0, honorlevel = 1;
 118         ino_t maxino;
 119 #ifdef  __linux__
 120         errcode_t retval;
 121         char directory[NAME_MAX];
 122         char pathname[NAME_MAX];
 123 #endif
 124         time_t tnow;
 125         char labelstr[LBLSIZE];
 126
 127         spcl.c_date = 0;
 128 #ifdef  __linux__
 129         (void)time4(&spcl.c_date);
 130 #else
 131         (void)time((time_t *)&spcl.c_date);
 132 #endif
 133
 134 #ifdef __linux__
 135         __progname = argv[0];
 136         directory[0] = 0;
 137         initialize_ext2_error_table();
 138 #endif
 139
 140         tsize = 0;      /* Default later, based on 'c' option for cart tapes */
 141         if ((tapeprefix = getenv("TAPE")) == NULL)
 142                 tapeprefix = _PATH_DEFTAPE;
 143         dumpdates = _PATH_DUMPDATES;
 144         temp = _PATH_DTMP;
 145         strcpy(labelstr, "none");       /* XXX safe strcpy. */
 146         if (TP_BSIZE / DEV_BSIZE == 0 || TP_BSIZE % DEV_BSIZE != 0)
 147                 quit("TP_BSIZE must be a multiple of DEV_BSIZE\n");
 148         level = '0';
 149
 150         if (argc < 2)
 151                 usage();
 152
 153         obsolete(&argc, &argv);
 154 #ifdef KERBEROS
 155 #define optstring "0123456789aB:b:cd:f:h:kL:Mns:ST:uWw"
 156 #else
 157 #define optstring "0123456789aB:b:cd:f:h:L:Mns:ST:uWw"
 158 #endif
 159         while ((ch = getopt(argc, argv, optstring)) != -1)
 160 #undef optstring
 161                 switch (ch) {
 162                 /* dump level */
 163                 case '0': case '1': case '2': case '3': case '4':
 164                 case '5': case '6': case '7': case '8': case '9':
 165                         level = ch;
 166                         break;
 167
 168                 case 'a':               /* `auto-size', Write to EOM. */
 169                         unlimited = 1;
 170                         break;
 171
 172                 case 'B':               /* blocks per output file */
 173                         blocksperfile = numarg("number of blocks per file",
 174                             1L, 0L);
 175                         break;
 176
 177                 case 'b':               /* blocks per tape write */
 178                         ntrec = numarg("number of blocks per write",
 179                             1L, 1000L);
 180                         if (ntrec > maxbsize/1024) {
 181                                 msg("Please choose a blocksize <= %dKB\n",
 182                                         maxbsize/1024);
 183                                 exit(X_STARTUP);
 184                         }
 185                         bflag = 1;
 186                         break;
 187
 188                 case 'c':               /* Tape is cart. not 9-track */
 189                         cartridge = 1;
 190                         break;
 191
 192                 case 'd':               /* density, in bits per inch */
 193                         density = numarg("density", 10L, 327670L) / 10;
 194                         if (density >= 625 && !bflag)
 195                                 ntrec = HIGHDENSITYTREC;
 196                         break;
 197
 198                 case 'f':               /* output file */
 199                         tapeprefix = optarg;
 200                         break;
 201
 202                 case 'h':
 203                         honorlevel = numarg("honor level", 0L, 10L);
 204                         break;
 205
 206 #ifdef KERBEROS
 207                 case 'k':
 208                         dokerberos = 1;
 209                         break;
 210 #endif
 211
 212                 case 'L':
 213                         /*
 214                          * Note that although there are LBLSIZE characters,
 215                          * the last must be '\0', so the limit on strlen()
 216                          * is really LBLSIZE-1.
 217                          */
 218                         strncpy(labelstr, optarg, LBLSIZE);
 219                         labelstr[LBLSIZE-1] = '\0';
 220                         if (strlen(optarg) > LBLSIZE-1) {
 221                                 msg(
 222                 "WARNING Label `%s' is larger than limit of %d characters.\n",
 223                                     optarg, LBLSIZE-1);
 224                                 msg("WARNING: Using truncated label `%s'.\n",
 225                                     labelstr);
 226                         }
 227                         break;
 228
 229                 case 'M':               /* multi-volume flag */
 230                         Mflag = 1;
 231                         break;
 232
 233                 case 'n':               /* notify operators */
 234                         notify = 1;
 235                         break;
 236
 237                 case 's':               /* tape size, feet */
 238                         tsize = numarg("tape size", 1L, 0L) * 12 * 10;
 239                         break;
 240
 241                 case 'S':
 242                         sizest = 1;     /* return size estimate only */
 243                         break;
 244
 245                 case 'T':               /* time of last dump */
 246                         spcl.c_ddate = unctime(optarg);
 247                         if (spcl.c_ddate < 0) {
 248                                 (void)fprintf(stderr, "bad time \"%s\"\n",
 249                                     optarg);
 250                                 exit(X_STARTUP);
 251                         }
 252                         Tflag = 1;
 253                         lastlevel = '?';
 254                         break;
 255
 256                 case 'u':               /* update dumpdates */
 257                         uflag = 1;
 258                         break;
 259
 260                 case 'W':               /* what to do */
 261                 case 'w':
 262                         lastdump(ch);
 263                         exit(X_FINOK);  /* do nothing else */
 264
 265                 default:
 266                         usage();
 267                 }
 268         argc -= optind;
 269         argv += optind;
 270
 271         if (argc < 1) {
 272                 (void)fprintf(stderr, "Must specify disk or filesystem\n");
 273                 exit(X_STARTUP);
 274         }
 275         disk = *argv++;
 276         argc--;
 277         if (argc >= 1) {
 278                 (void)fprintf(stderr, "Unknown arguments to dump:");
 279                 while (argc--)
 280                         (void)fprintf(stderr, " %s", *argv++);
 281                 (void)fprintf(stderr, "\n");
 282                 exit(X_STARTUP);
 283         }
 284         if (Tflag && uflag) {
 285                 (void)fprintf(stderr,
 286                     "You cannot use the T and u flags together.\n");
 287                 exit(X_STARTUP);
 288         }
 289         if (strcmp(tapeprefix, "-") == 0) {
 290                 pipeout++;
 291                 tapeprefix = "standard output";
 292         }
 293
 294         if (blocksperfile)
 295                 blocksperfile = blocksperfile / ntrec * ntrec; /* round down */
 296         else if (!unlimited) {
 297                 /*
 298                  * Determine how to default tape size and density
 299                  *
 300                  *              density                         tape size
 301                  * 9-track      1600 bpi (160 bytes/.1")        2300 ft.
 302                  * 9-track      6250 bpi (625 bytes/.1")        2300 ft.
 303                  * cartridge    8000 bpi (100 bytes/.1")        1700 ft.
 304                  *                                              (450*4 - slop)
 305                  * hilit19 hits again: "
 306                  */
 307                 if (density == 0)
 308                         density = cartridge ? 100 : 160;
 309                 if (tsize == 0)
 310                         tsize = cartridge ? 1700L*120L : 2300L*120L;
 311         }
 312
 313         if (strchr(tapeprefix, ':')) {
 314                 host = tapeprefix;
 315                 tapeprefix = strchr(host, ':');
 316                 *tapeprefix++ = '\0';
 317 #ifdef RDUMP
 318                 if (index(tapeprefix, '\n')) {
 319                     (void)fprintf(stderr, "invalid characters in tape\n");
 320                     exit(X_STARTUP);
 321                 }
 322                 if (rmthost(host) == 0)
 323                         exit(X_STARTUP);
 324 #else
 325                 (void)fprintf(stderr, "remote dump not enabled\n");
 326                 exit(X_STARTUP);
 327 #endif
 328         }
 329         (void)setuid(getuid()); /* rmthost() is the only reason to be setuid */
 330
 331         if (signal(SIGHUP, SIG_IGN) != SIG_IGN)
 332                 signal(SIGHUP, sig);
 333         if (signal(SIGTRAP, SIG_IGN) != SIG_IGN)
 334                 signal(SIGTRAP, sig);
 335         if (signal(SIGFPE, SIG_IGN) != SIG_IGN)
 336                 signal(SIGFPE, sig);
 337         if (signal(SIGBUS, SIG_IGN) != SIG_IGN)
 338                 signal(SIGBUS, sig);
 339         if (signal(SIGSEGV, SIG_IGN) != SIG_IGN)
 340                 signal(SIGSEGV, sig);
 341         if (signal(SIGTERM, SIG_IGN) != SIG_IGN)
 342                 signal(SIGTERM, sig);
 343         if (signal(SIGINT, interrupt) == SIG_IGN)
 344                 signal(SIGINT, SIG_IGN);
 345         set_operators();        /* /etc/group snarfed */
 346         getfstab();             /* /etc/fstab snarfed */
 347         /*
 348          *      disk can be either the full special file name,
 349          *      the suffix of the special file name,
 350          *      the special name missing the leading '/',
 351          *      the file system name with or without the leading '/'.
 352          */
 353         if ((dt = fstabsearch(disk)) != NULL) {
 354                 disk = rawname(dt->fs_spec);
 355                 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
 356                 (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN);
 357 #ifdef  __linux__
 358         } else {
 359                 /*
 360                  * The argument was not found in the fstab
 361                  * assume that this is a subtree and search for it
 362                  */
 363 #ifdef  HAVE_REALPATH
 364                 if (realpath(disk, pathname) == NULL)
 365 #endif
 366                         strcpy(pathname, disk);
 367                 dt = fstabsearchdir(pathname, directory);
 368                 if (dt != NULL) {
 369                         char name[MAXPATHLEN];
 370                         (void)sprintf(name, "%s (dir %s)",
 371                                       dt->fs_spec, directory);
 372                         (void)strncpy(spcl.c_dev, name, NAMELEN);
 373                         (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN);
 374                         disk = rawname(dt->fs_spec);
 375                 } else {
 376                         (void)strncpy(spcl.c_dev, disk, NAMELEN);
 377                         (void)strncpy(spcl.c_filesys, "an unlisted file system",
 378                             NAMELEN);
 379                 }
 380         }
 381 #else
 382         } else {
 383                 (void)strncpy(spcl.c_dev, disk, NAMELEN);
 384                 (void)strncpy(spcl.c_filesys, "an unlisted file system",
 385                     NAMELEN);
 386         }
 387 #endif
 388         spcl.c_dev[NAMELEN-1]='\0';
 389         spcl.c_filesys[NAMELEN-1]='\0';
 390         (void)strncpy(spcl.c_label, labelstr, sizeof(spcl.c_label) - 1);
 391         (void)gethostname(spcl.c_host, NAMELEN);
 392         spcl.c_level = level - '0';
 393         spcl.c_type = TS_TAPE;
 394         if (!Tflag)
 395                 getdumptime(uflag);             /* dumpdates snarfed */
 396
 397         if (spcl.c_ddate == 0 && spcl.c_level) {
 398                 msg("WARNING: There is no inferior level dump on this filesystem\n");
 399                 msg("WARNING: Assuming a level 0 dump by default\n");
 400                 level = '0';
 401                 spcl.c_level = 0;
 402         }
 403
 404         if (Mflag)
 405                 snprintf(tape, NAME_MAX, "%s%03d", tapeprefix, tapeno + 1);
 406         else
 407                 strncpy(tape, tapeprefix, NAME_MAX);
 408         tape[NAME_MAX - 1] = '\0';
 409
 410         if (!sizest) {
 411
 412                 msg("Date of this level %c dump: %s", level,
 413 #ifdef  __linux__
 414                         spcl.c_date == 0 ? "the epoch\n" : ctime4(&spcl.c_date));
 415 #else
 416                         spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date));
 417 #endif
 418                 msg("Date of last level %c dump: %s", lastlevel,
 419 #ifdef  __linux__
 420                         spcl.c_ddate == 0 ? "the epoch\n" : ctime4(&spcl.c_ddate));
 421 #else
 422                         spcl.c_ddate == 0 ? "the epoch\n" : ctime(&spcl.c_ddate));
 423 #endif
 424                 msg("Dumping %s ", disk);
 425                 if (dt != NULL)
 426                         msgtail("(%s) ", dt->fs_file);
 427                 if (host)
 428                         msgtail("to %s on host %s\n", tape, host);
 429                 else
 430                         msgtail("to %s\n", tape);
 431                 msg("Label: %s\n", labelstr);
 432
 433         } /* end of size estimate */
 434
 435 #ifdef  __linux__
 436         retval = dump_fs_open(disk, &fs);
 437         if (retval) {
 438                 com_err(disk, retval, "while opening filesystem");
 439                 if (retval == EXT2_ET_REV_TOO_HIGH)
 440                         printf ("Get a newer version of dump!\n");
 441                 exit(X_STARTUP);
 442         }
 443         if (fs->super->s_rev_level > DUMP_CURRENT_REV) {
 444                 com_err(disk, retval, "while opening filesystem");
 445                 printf ("Get a newer version of dump!\n");
 446                 exit(X_STARTUP);
 447         }
 448         if ((diskfd = open(disk, O_RDONLY)) < 0) {
 449                 msg("Cannot open %s\n", disk);
 450                 exit(X_STARTUP);
 451         }
 452         sync();
 453         dev_bsize = DEV_BSIZE;
 454         dev_bshift = ffs(dev_bsize) - 1;
 455         if (dev_bsize != (1 << dev_bshift))
 456                 quit("dev_bsize (%d) is not a power of 2", dev_bsize);
 457         tp_bshift = ffs(TP_BSIZE) - 1;
 458         if (TP_BSIZE != (1 << tp_bshift))
 459                 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
 460         maxino = fs->super->s_inodes_count;
 461 #if     0
 462         spcl.c_flags |= DR_NEWINODEFMT;
 463 #endif
 464 #else   /* __linux __*/
 465         if ((diskfd = open(disk, O_RDONLY)) < 0) {
 466                 msg("Cannot open %s\n", disk);
 467                 exit(X_STARTUP);
 468         }
 469         sync();
 470         sblock = (struct fs *)sblock_buf;
 471         bread(SBOFF, (char *) sblock, SBSIZE);
 472         if (sblock->fs_magic != FS_MAGIC)
 473                 quit("bad sblock magic number\n");
 474         dev_bsize = sblock->fs_fsize / fsbtodb(sblock, 1);
 475         dev_bshift = ffs(dev_bsize) - 1;
 476         if (dev_bsize != (1 << dev_bshift))
 477                 quit("dev_bsize (%d) is not a power of 2", dev_bsize);
 478         tp_bshift = ffs(TP_BSIZE) - 1;
 479         if (TP_BSIZE != (1 << tp_bshift))
 480                 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
 481 #ifdef FS_44INODEFMT
 482         if (sblock->fs_inodefmt >= FS_44INODEFMT)
 483                 spcl.c_flags |= DR_NEWINODEFMT;
 484 #endif
 485         maxino = sblock->fs_ipg * sblock->fs_ncg;
 486 #endif  /* __linux__ */
 487         mapsize = roundup(howmany(maxino, NBBY), TP_BSIZE);
 488         usedinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
 489         dumpdirmap = (char *)calloc((unsigned) mapsize, sizeof(char));
 490         dumpinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
 491         tapesize = 3 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
 492
 493         nonodump = spcl.c_level < honorlevel;
 494
 495 #if defined(SIGINFO)
 496         (void)signal(SIGINFO, statussig);
 497 #endif
 498
 499         if (!sizest)
 500                 msg("mapping (Pass I) [regular files]\n");
 501 #ifdef  __linux__
 502         if (directory[0] == 0)
 503                 anydirskipped = mapfiles(maxino, &tapesize);
 504         else
 505                 anydirskipped = mapfilesfromdir(maxino, &tapesize, directory);
 506 #else
 507         anydirskipped = mapfiles(maxino, &tapesize);
 508 #endif
 509
 510         if (!sizest)
 511                 msg("mapping (Pass II) [directories]\n");
 512         while (anydirskipped) {
 513                 anydirskipped = mapdirs(maxino, &tapesize);
 514         }
 515
 516         if (sizest) {
 517                 printf("%ld\n", tapesize + 10);
 518                 exit(X_STARTUP);
 519         } /* stop here for size estimate */
 520
 521         if (pipeout || unlimited) {
 522                 tapesize += 10; /* 10 trailer blocks */
 523                 msg("estimated %ld tape blocks.\n", tapesize);
 524         } else {
 525                 double fetapes;
 526
 527                 if (blocksperfile)
 528                         fetapes = (double) tapesize / blocksperfile;
 529                 else if (cartridge) {
 530                         /* Estimate number of tapes, assuming streaming stops at
 531                            the end of each block written, and not in mid-block.
 532                            Assume no erroneous blocks; this can be compensated
 533                            for with an artificially low tape size. */
 534                         fetapes =
 535                         (         (double) tapesize     /* blocks */
 536                                 * TP_BSIZE      /* bytes/block */
 537                                 * (1.0/density) /* 0.1" / byte " */
 538                           +
 539                                   (double) tapesize     /* blocks */
 540                                 * (1.0/ntrec)   /* streaming-stops per block */
 541                                 * 15.48         /* 0.1" / streaming-stop " */
 542                         ) * (1.0 / tsize );     /* tape / 0.1" " */
 543                 } else {
 544                         /* Estimate number of tapes, for old fashioned 9-track
 545                            tape */
 546                         int tenthsperirg = (density == 625) ? 3 : 7;
 547                         fetapes =
 548                         (         (double) tapesize     /* blocks */
 549                                 * TP_BSIZE      /* bytes / block */
 550                                 * (1.0/density) /* 0.1" / byte " */
 551                           +
 552                                   (double) tapesize     /* blocks */
 553                                 * (1.0/ntrec)   /* IRG's / block */
 554                                 * tenthsperirg  /* 0.1" / IRG " */
 555                         ) * (1.0 / tsize );     /* tape / 0.1" " */
 556                 }
 557                 etapes = fetapes;               /* truncating assignment */
 558                 etapes++;
 559                 /* count the dumped inodes map on each additional tape */
 560                 tapesize += (etapes - 1) *
 561                         (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
 562                 tapesize += etapes + 10;        /* headers + 10 trailer blks */
 563                 msg("estimated %ld tape blocks on %3.2f tape(s).\n",
 564                     tapesize, fetapes);
 565         }
 566
 567         /*
 568          * Allocate tape buffer.
 569          */
 570         if (!alloctape())
 571                 quit(
 572         "can't allocate tape buffers - try a smaller blocking factor.\n");
 573
 574         startnewtape(1);
 575 #ifdef __linux__
 576         (void)time4(&(tstart_writing));
 577 #else
 578         (void)time((time_t *)&(tstart_writing));
 579 #endif
 580         dumpmap(usedinomap, TS_CLRI, maxino - 1);
 581
 582         msg("dumping (Pass III) [directories]\n");
 583         dirty = 0;              /* XXX just to get gcc to shut up */
 584         for (map = dumpdirmap, ino = 1; ino < maxino; ino++) {
 585                 if (((ino - 1) % NBBY) == 0)    /* map is offset by 1 */
 586                         dirty = *map++;
 587                 else
 588                         dirty >>= 1;
 589                 if ((dirty & 1) == 0)
 590                         continue;
 591                 /*
 592                  * Skip directory inodes deleted and maybe reallocated
 593                  */
 594                 dp = getino(ino);
 595                 if ((dp->di_mode & IFMT) != IFDIR)
 596                         continue;
 597 #ifdef  __linux__
 598                 (void)dumpdirino(dp, ino);
 599 #else
 600                 (void)dumpino(dp, ino);
 601 #endif
 602         }
 603
 604         msg("dumping (Pass IV) [regular files]\n");
 605         for (map = dumpinomap, ino = 1; ino < maxino; ino++) {
 606                 int mode;
 607
 608                 if (((ino - 1) % NBBY) == 0)    /* map is offset by 1 */
 609                         dirty = *map++;
 610                 else
 611                         dirty >>= 1;
 612                 if ((dirty & 1) == 0)
 613                         continue;
 614                 /*
 615                  * Skip inodes deleted and reallocated as directories.
 616                  */
 617                 dp = getino(ino);
 618                 mode = dp->di_mode & IFMT;
 619                 if (mode == IFDIR)
 620                         continue;
 621                 (void)dumpino(dp, ino);
 622         }
 623
 624 #ifdef __linux__
 625         (void)time4(&(tend_writing));
 626 #else
 627         (void)time((time_t *)&(tend_writing));
 628 #endif
 629         spcl.c_type = TS_END;
 630         for (i = 0; i < ntrec; i++)
 631                 writeheader(maxino - 1);
 632         if (pipeout)
 633                 msg("DUMP: %ld tape blocks\n", spcl.c_tapea);
 634         else
 635                 msg("DUMP: %ld tape blocks on %d volumes(s)\n",
 636                     spcl.c_tapea, spcl.c_volume);
 637
 638         /* report dump performance, avoid division through zero */
 639         if (tend_writing - tstart_writing == 0)
 640                 msg("finished in less than a second\n");
 641         else
 642                 msg("finished in %d seconds, throughput %d KBytes/sec\n",
 643                     tend_writing - tstart_writing,
 644                     spcl.c_tapea / (tend_writing - tstart_writing));
 645
 646         tnow = do_stats();
 647         putdumptime();
 648 #ifdef __linux__
 649         msg("DUMP: Date of this level %c dump: %s", level,
 650                 spcl.c_date == 0 ? "the epoch\n" : ctime4(&spcl.c_date));
 651 #else
 652         msg("DUMP: Date of this level %c dump: %s", level,
 653                 spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date));
 654 #endif
 655         msg("DUMP: Date this dump completed:  %s", ctime(&tnow));
 656
 657         msg("DUMP: Average transfer rate: %ld KB/s\n", xferrate / tapeno);
 658
 659         trewind();
 660         broadcast("DUMP IS DONE!\7\7\n");
 661         msg("DUMP IS DONE\n");
 662         Exit(X_FINOK);
 663         /* NOTREACHED */
 664         return 0;       /* gcc - shut up */
 665 }
 666
 667 static void
 668 usage(void)
 669 {
 670         char white[MAXPATHLEN];
 671         int i;
 672
 673         strncpy(white, __progname, MAXPATHLEN-1);
 674         white[MAXPATHLEN-1] = '\0';
 675         for (i=0; i<MAXPATHLEN; ++i)
 676                 if (white[i] != '\0') white[i] = ' ';
 677
 678         fprintf(stderr,
 679                 "%s %s\n", __progname, _DUMP_VERSION);
 680         fprintf(stderr,
 681                 "usage:\t%s [-0123456789ac"
 682 #ifdef KERBEROS
 683                 "k"
 684 #endif
 685                 "MnSu] [-B records] [-b blocksize] [-d density]\n"
 686                 "\t%s [-f file] [-h level] [-s feet] [-T date] filesystem\n"
 687                 "\t%s [-W | -w]\n", __progname, white, __progname);
 688         exit(X_STARTUP);
 689 }
 690
 691 /*
 692  * Pick up a numeric argument.  It must be nonnegative and in the given
 693  * range (except that a vmax of 0 means unlimited).
 694  */
 695 static long
 696 numarg(const char *meaning, long vmin, long vmax)
 697 {
 698         char *p;
 699         long val;
 700
 701         val = strtol(optarg, &p, 10);
 702         if (*p)
 703                 errx(X_STARTUP, "illegal %s -- %s", meaning, optarg);
 704         if (val < vmin || (vmax && val > vmax))
 705                 errx(X_STARTUP, "%s must be between %ld and %ld", meaning, vmin, vmax);
 706         return (val);
 707 }
 708
 709 void
 710 sig(int signo)
 711 {
 712         switch(signo) {
 713         case SIGALRM:
 714         case SIGBUS:
 715         case SIGFPE:
 716         case SIGHUP:
 717         case SIGTERM:
 718         case SIGTRAP:
 719                 if (pipeout)
 720                         quit("Signal on pipe: cannot recover\n");
 721                 msg("Rewriting attempted as response to unknown signal.\n");
 722                 (void)fflush(stderr);
 723                 (void)fflush(stdout);
 724                 close_rewind();
 725                 exit(X_REWRITE);
 726                 /* NOTREACHED */
 727         case SIGSEGV:
 728                 msg("SIGSEGV: ABORTING!\n");
 729                 (void)signal(SIGSEGV, SIG_DFL);
 730                 (void)kill(0, SIGSEGV);
 731                 /* NOTREACHED */
 732         }
 733 }
 734
 735 char *
 736 rawname(char *cp)
 737 {
 738 #ifdef  __linux__
 739         return cp;
 740 #else   /* __linux__ */
 741         static char rawbuf[MAXPATHLEN];
 742         char *dp = strrchr(cp, '/');
 743
 744         if (dp == NULL)
 745                 return (NULL);
 746         *dp = '\0';
 747         (void)strncpy(rawbuf, cp, MAXPATHLEN - 1);
 748         rawbuf[MAXPATHLEN-1] = '\0';
 749         *dp = '/';
 750         (void)strncat(rawbuf, "/r", MAXPATHLEN - 1 - strlen(rawbuf));
 751         (void)strncat(rawbuf, dp + 1, MAXPATHLEN - 1 - strlen(rawbuf));
 752         return (rawbuf);
 753 #endif  /* __linux__ */
 754 }
 755
 756 /*
 757  * obsolete --
 758  *      Change set of key letters and ordered arguments into something
 759  *      getopt(3) will like.
 760  */
 761 static void
 762 obsolete(int *argcp, char **argvp[])
 763 {
 764         int argc, flags;
 765         char *ap, **argv, *flagsp=NULL, **nargv, *p=NULL;
 766
 767         /* Setup. */
 768         argv = *argvp;
 769         argc = *argcp;
 770
 771         /* Return if no arguments or first argument has leading dash. */
 772         ap = argv[1];
 773         if (argc == 1 || *ap == '-')
 774                 return;
 775
 776         /* Allocate space for new arguments. */
 777         if ((*argvp = nargv = malloc((argc + 1) * sizeof(char *))) == NULL ||
 778             (p = flagsp = malloc(strlen(ap) + 2)) == NULL)
 779                 err(X_STARTUP, "malloc new args");
 780
 781         *nargv++ = *argv;
 782         argv += 2;
 783
 784         for (flags = 0; *ap; ++ap) {
 785                 switch (*ap) {
 786                 case 'B':
 787                 case 'b':
 788                 case 'd':
 789                 case 'f':
 790                 case 'h':
 791                 case 's':
 792                 case 'T':
 793                         if (*argv == NULL) {
 794                                 warnx("option requires an argument -- %c", *ap);
 795                                 usage();
 796                         }
 797                         if ((nargv[0] = malloc(strlen(*argv) + 2 + 1)) == NULL)
 798                                 err(X_STARTUP, "malloc arg");
 799                         nargv[0][0] = '-';
 800                         nargv[0][1] = *ap;
 801                         (void)strcpy(&nargv[0][2], *argv);
 802                         ++argv;
 803                         ++nargv;
 804                         break;
 805                 default:
 806                         if (!flags) {
 807                                 *p++ = '-';
 808                                 flags = 1;
 809                         }
 810                         *p++ = *ap;
 811                         break;
 812                 }
 813         }
 814
 815         /* Terminate flags. */
 816         if (flags) {
 817                 *p = '\0';
 818                 *nargv++ = flagsp;
 819         }
 820
 821         /* Copy remaining arguments. */
 822         while ((*nargv++ = *argv++));
 823
 824         /* Update argument count. */
 825         *argcp = nargv - *argvp - 1;
 826 }