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 1.23 2000/08/19 23:48:10 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         eot_script = NULL;
 145         if ((tapeprefix = getenv("TAPE")) == NULL)
 146                 tapeprefix = _PATH_DEFTAPE;
 147         dumpdates = _PATH_DUMPDATES;
 148         strcpy(labelstr, "none");       /* XXX safe strcpy. */
 149         if (TP_BSIZE / DEV_BSIZE == 0 || TP_BSIZE % DEV_BSIZE != 0)
 150                 quit("TP_BSIZE must be a multiple of DEV_BSIZE\n");
 151         level = '0';
 152
 153         if (argc < 2)
 154                 usage();
 155
 156         obsolete(&argc, &argv);
 157 #ifdef KERBEROS
 158 #define optstring "0123456789aB:b:cd:e:f:F:h:kL:Mns:ST:uWw"
 159 #else
 160 #define optstring "0123456789aB:b:cd:e:f:F:h:L:Mns:ST:uWw"
 161 #endif
 162         while ((ch = getopt(argc, argv, optstring)) != -1)
 163 #undef optstring
 164                 switch (ch) {
 165                 /* dump level */
 166                 case '0': case '1': case '2': case '3': case '4':
 167                 case '5': case '6': case '7': case '8': case '9':
 168                         level = ch;
 169                         break;
 170
 171                 case 'a':               /* `auto-size', Write to EOM. */
 172                         unlimited = 1;
 173                         break;
 174
 175                 case 'B':               /* blocks per output file */
 176                         blocksperfile = numarg("number of blocks per file",
 177                             1L, 0L);
 178                         break;
 179
 180                 case 'b':               /* blocks per tape write */
 181                         ntrec = numarg("number of blocks per write",
 182                             1L, 1000L);
 183                         if (ntrec > maxbsize/1024) {
 184                                 msg("Please choose a blocksize <= %dKB\n",
 185                                         maxbsize/1024);
 186                                 exit(X_STARTUP);
 187                         }
 188                         bflag = 1;
 189                         break;
 190
 191                 case 'c':               /* Tape is cart. not 9-track */
 192                         cartridge = 1;
 193                         break;
 194
 195                 case 'd':               /* density, in bits per inch */
 196                         density = numarg("density", 10L, 327670L) / 10;
 197                         if (density >= 625 && !bflag)
 198                                 ntrec = HIGHDENSITYTREC;
 199                         break;
 200
 201                                         /* 04-Feb-00 ILC */
 202                 case 'e':               /* exclude an inode */
 203                         iexclude_list[iexclude_num++] =
 204                           numarg("inode to exclude",0L,0L);
 205                         msg("Added %d to exclude list\n",
 206                             iexclude_list[iexclude_num-1]);
 207                         break;
 208
 209                 case 'f':               /* output file */
 210                         tapeprefix = optarg;
 211                         break;
 212
 213                 case 'F':               /* end of tape script */
 214                         eot_script = optarg;
 215                         break;
 216
 217                 case 'h':
 218                         honorlevel = numarg("honor level", 0L, 10L);
 219                         break;
 220
 221 #ifdef KERBEROS
 222                 case 'k':
 223                         dokerberos = 1;
 224                         break;
 225 #endif
 226
 227                 case 'L':
 228                         /*
 229                          * Note that although there are LBLSIZE characters,
 230                          * the last must be '\0', so the limit on strlen()
 231                          * is really LBLSIZE-1.
 232                          */
 233                         strncpy(labelstr, optarg, LBLSIZE);
 234                         labelstr[LBLSIZE-1] = '\0';
 235                         if (strlen(optarg) > LBLSIZE-1) {
 236                                 msg(
 237                 "WARNING Label `%s' is larger than limit of %d characters.\n",
 238                                     optarg, LBLSIZE-1);
 239                                 msg("WARNING: Using truncated label `%s'.\n",
 240                                     labelstr);
 241                         }
 242                         break;
 243
 244                 case 'M':               /* multi-volume flag */
 245                         Mflag = 1;
 246                         break;
 247
 248                 case 'n':               /* notify operators */
 249                         notify = 1;
 250                         break;
 251
 252                 case 's':               /* tape size, feet */
 253                         tsize = numarg("tape size", 1L, 0L) * 12 * 10;
 254                         break;
 255
 256                 case 'S':
 257                         sizest = 1;     /* return size estimate only */
 258                         break;
 259
 260                 case 'T':               /* time of last dump */
 261                         spcl.c_ddate = unctime(optarg);
 262                         if (spcl.c_ddate < 0) {
 263                                 (void)fprintf(stderr, "bad time \"%s\"\n",
 264                                     optarg);
 265                                 exit(X_STARTUP);
 266                         }
 267                         Tflag = 1;
 268                         lastlevel = '?';
 269                         break;
 270
 271                 case 'u':               /* update dumpdates */
 272                         uflag = 1;
 273                         break;
 274
 275                 case 'W':               /* what to do */
 276                 case 'w':
 277                         lastdump(ch);
 278                         exit(X_FINOK);  /* do nothing else */
 279
 280                 default:
 281                         usage();
 282                 }
 283         argc -= optind;
 284         argv += optind;
 285
 286         if (argc < 1) {
 287                 (void)fprintf(stderr, "Must specify disk or filesystem\n");
 288                 exit(X_STARTUP);
 289         }
 290         disk = *argv++;
 291         if (strlen(disk) >= MAXPATHLEN) {
 292                 (void)fprintf(stderr, "Disk or filesystem name too long: %s\n", disk);
 293                 exit(X_STARTUP);
 294         }
 295         argc--;
 296         if (argc >= 1) {
 297                 (void)fprintf(stderr, "Unknown arguments to dump:");
 298                 while (argc--)
 299                         (void)fprintf(stderr, " %s", *argv++);
 300                 (void)fprintf(stderr, "\n");
 301                 exit(X_STARTUP);
 302         }
 303         if (Tflag && uflag) {
 304                 (void)fprintf(stderr,
 305                     "You cannot use the T and u flags together.\n");
 306                 exit(X_STARTUP);
 307         }
 308         if (strcmp(tapeprefix, "-") == 0) {
 309                 pipeout++;
 310                 tapeprefix = "standard output";
 311         }
 312
 313         if (blocksperfile)
 314                 blocksperfile = blocksperfile / ntrec * ntrec; /* round down */
 315         else if (!unlimited) {
 316                 /*
 317                  * Determine how to default tape size and density
 318                  *
 319                  *              density                         tape size
 320                  * 9-track      1600 bpi (160 bytes/.1")        2300 ft.
 321                  * 9-track      6250 bpi (625 bytes/.1")        2300 ft.
 322                  * cartridge    8000 bpi (100 bytes/.1")        1700 ft.
 323                  *                                              (450*4 - slop)
 324                  * hilit19 hits again: "
 325                  */
 326                 if (density == 0)
 327                         density = cartridge ? 100 : 160;
 328                 if (tsize == 0)
 329                         tsize = cartridge ? 1700L*120L : 2300L*120L;
 330         }
 331
 332         if (strchr(tapeprefix, ':')) {
 333                 host = tapeprefix;
 334                 tapeprefix = strchr(host, ':');
 335                 *tapeprefix++ = '\0';
 336 #ifdef RDUMP
 337                 if (index(tapeprefix, '\n')) {
 338                     (void)fprintf(stderr, "invalid characters in tape\n");
 339                     exit(X_STARTUP);
 340                 }
 341                 if (rmthost(host) == 0)
 342                         exit(X_STARTUP);
 343 #else
 344                 (void)fprintf(stderr, "remote dump not enabled\n");
 345                 exit(X_STARTUP);
 346 #endif
 347         }
 348         (void)setuid(getuid()); /* rmthost() is the only reason to be setuid */
 349
 350         if (signal(SIGHUP, SIG_IGN) != SIG_IGN)
 351                 signal(SIGHUP, sig);
 352         if (signal(SIGTRAP, SIG_IGN) != SIG_IGN)
 353                 signal(SIGTRAP, sig);
 354         if (signal(SIGFPE, SIG_IGN) != SIG_IGN)
 355                 signal(SIGFPE, sig);
 356         if (signal(SIGBUS, SIG_IGN) != SIG_IGN)
 357                 signal(SIGBUS, sig);
 358         if (signal(SIGSEGV, SIG_IGN) != SIG_IGN)
 359                 signal(SIGSEGV, sig);
 360         if (signal(SIGTERM, SIG_IGN) != SIG_IGN)
 361                 signal(SIGTERM, sig);
 362         if (signal(SIGINT, interrupt) == SIG_IGN)
 363                 signal(SIGINT, SIG_IGN);
 364         set_operators();        /* /etc/group snarfed */
 365         getfstab();             /* /etc/fstab snarfed */
 366         /*
 367          *      disk may end in / and this can confuse
 368          *      fstabsearch.
 369          */
 370         if (strlen(disk) > 1 && disk[strlen(disk) - 1] == '/')
 371           disk[strlen(disk) - 1] = '\0';
 372         /*
 373          *      disk can be either the full special file name,
 374          *      the suffix of the special file name,
 375          *      the special name missing the leading '/',
 376          *      the file system name with or without the leading '/'.
 377          */
 378         if ((dt = fstabsearch(disk)) != NULL) {
 379                 disk = rawname(dt->fs_spec);
 380                 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
 381                 (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN);
 382 #ifdef  __linux__
 383         } else {
 384                 /*
 385                  * The argument was not found in the fstab
 386                  * assume that this is a subtree and search for it
 387                  */
 388 #ifdef  HAVE_REALPATH
 389                 if (realpath(disk, pathname) == NULL)
 390 #endif
 391                         strcpy(pathname, disk);
 392                 dt = fstabsearchdir(pathname, directory);
 393                 if (dt != NULL) {
 394                         char name[MAXPATHLEN];
 395                         (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
 396                         (void)snprintf(name, sizeof(name), "%s (dir %s)",
 397                                       dt->fs_file, directory);
 398                         (void)strncpy(spcl.c_filesys, name, NAMELEN);
 399                         disk = rawname(dt->fs_spec);
 400                 } else {
 401                         (void)strncpy(spcl.c_dev, disk, NAMELEN);
 402                         (void)strncpy(spcl.c_filesys, "an unlisted file system",
 403                             NAMELEN);
 404                 }
 405         }
 406 #else
 407         } else {
 408                 (void)strncpy(spcl.c_dev, disk, NAMELEN);
 409                 (void)strncpy(spcl.c_filesys, "an unlisted file system",
 410                     NAMELEN);
 411         }
 412 #endif
 413
 414         if (directory[0] != 0) {
 415                 if (level != '0') {
 416                         (void)fprintf(stderr, "Only level 0 dumps are allowed on a subdirectory\n");
 417                         exit(X_STARTUP);
 418                 }
 419                 if (uflag) {
 420                         (void)fprintf(stderr, "You can't update the dumpdates file when dumping a subdirectory\n");
 421                         exit(X_STARTUP);
 422                 }
 423         }
 424
 425         spcl.c_dev[NAMELEN-1]='\0';
 426         spcl.c_filesys[NAMELEN-1]='\0';
 427         (void)strncpy(spcl.c_label, labelstr, sizeof(spcl.c_label) - 1);
 428         (void)gethostname(spcl.c_host, NAMELEN);
 429         spcl.c_level = level - '0';
 430         spcl.c_type = TS_TAPE;
 431         if (!Tflag)
 432                 getdumptime(uflag);             /* dumpdates snarfed */
 433
 434         if (spcl.c_ddate == 0 && spcl.c_level) {
 435                 msg("WARNING: There is no inferior level dump on this filesystem\n");
 436                 msg("WARNING: Assuming a level 0 dump by default\n");
 437                 level = '0';
 438                 spcl.c_level = 0;
 439         }
 440
 441         if (Mflag)
 442                 snprintf(tape, MAXPATHLEN, "%s%03d", tapeprefix, tapeno + 1);
 443         else
 444                 strncpy(tape, tapeprefix, MAXPATHLEN);
 445         tape[MAXPATHLEN - 1] = '\0';
 446
 447         if (!sizest) {
 448
 449                 msg("Date of this level %c dump: %s", level,
 450 #ifdef  __linux__
 451                         spcl.c_date == 0 ? "the epoch\n" : ctime4(&spcl.c_date));
 452 #else
 453                         spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date));
 454 #endif
 455                 msg("Date of last level %c dump: %s", lastlevel,
 456 #ifdef  __linux__
 457                         spcl.c_ddate == 0 ? "the epoch\n" : ctime4(&spcl.c_ddate));
 458 #else
 459                         spcl.c_ddate == 0 ? "the epoch\n" : ctime(&spcl.c_ddate));
 460 #endif
 461                 msg("Dumping %s (%s) ", disk, spcl.c_filesys);
 462                 if (host)
 463                         msgtail("to %s on host %s\n", tape, host);
 464                 else
 465                         msgtail("to %s\n", tape);
 466                 msg("Label: %s\n", labelstr);
 467
 468         } /* end of size estimate */
 469
 470 #ifdef  __linux__
 471         retval = dump_fs_open(disk, &fs);
 472         if (retval) {
 473                 com_err(disk, retval, "while opening filesystem");
 474                 if (retval == EXT2_ET_REV_TOO_HIGH)
 475                         printf ("Get a newer version of dump!\n");
 476                 exit(X_STARTUP);
 477         }
 478         if (fs->super->s_rev_level > DUMP_CURRENT_REV) {
 479                 com_err(disk, retval, "while opening filesystem");
 480                 printf ("Get a newer version of dump!\n");
 481                 exit(X_STARTUP);
 482         }
 483         if ((diskfd = open(disk, O_RDONLY)) < 0) {
 484                 msg("Cannot open %s\n", disk);
 485                 exit(X_STARTUP);
 486         }
 487         sync();
 488         dev_bsize = DEV_BSIZE;
 489         dev_bshift = ffs(dev_bsize) - 1;
 490         if (dev_bsize != (1 << dev_bshift))
 491                 quit("dev_bsize (%d) is not a power of 2", dev_bsize);
 492         tp_bshift = ffs(TP_BSIZE) - 1;
 493         if (TP_BSIZE != (1 << tp_bshift))
 494                 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
 495         maxino = fs->super->s_inodes_count;
 496 #if     0
 497         spcl.c_flags |= DR_NEWINODEFMT;
 498 #endif
 499 #else   /* __linux __*/
 500         if ((diskfd = open(disk, O_RDONLY)) < 0) {
 501                 msg("Cannot open %s\n", disk);
 502                 exit(X_STARTUP);
 503         }
 504         sync();
 505         sblock = (struct fs *)sblock_buf;
 506         bread(SBOFF, (char *) sblock, SBSIZE);
 507         if (sblock->fs_magic != FS_MAGIC)
 508                 quit("bad sblock magic number\n");
 509         dev_bsize = sblock->fs_fsize / fsbtodb(sblock, 1);
 510         dev_bshift = ffs(dev_bsize) - 1;
 511         if (dev_bsize != (1 << dev_bshift))
 512                 quit("dev_bsize (%d) is not a power of 2", dev_bsize);
 513         tp_bshift = ffs(TP_BSIZE) - 1;
 514         if (TP_BSIZE != (1 << tp_bshift))
 515                 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
 516 #ifdef FS_44INODEFMT
 517         if (sblock->fs_inodefmt >= FS_44INODEFMT)
 518                 spcl.c_flags |= DR_NEWINODEFMT;
 519 #endif
 520         maxino = sblock->fs_ipg * sblock->fs_ncg;
 521 #endif  /* __linux__ */
 522         mapsize = roundup(howmany(maxino, NBBY), TP_BSIZE);
 523         usedinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
 524         dumpdirmap = (char *)calloc((unsigned) mapsize, sizeof(char));
 525         dumpinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
 526         tapesize = 2 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
 527
 528         nonodump = spcl.c_level < honorlevel;
 529
 530 #if defined(SIGINFO)
 531         (void)signal(SIGINFO, statussig);
 532 #endif
 533
 534         if (!sizest)
 535                 msg("mapping (Pass I) [regular files]\n");
 536 #ifdef  __linux__
 537         if (directory[0] == 0)
 538                 anydirskipped = mapfiles(maxino, &tapesize);
 539         else
 540                 anydirskipped = mapfilesfromdir(maxino, &tapesize, directory);
 541 #else
 542         anydirskipped = mapfiles(maxino, &tapesize);
 543 #endif
 544
 545         if (!sizest)
 546                 msg("mapping (Pass II) [directories]\n");
 547         while (anydirskipped) {
 548                 anydirskipped = mapdirs(maxino, &tapesize);
 549         }
 550
 551         if (sizest) {
 552                 printf("%.0f\n", ((double)tapesize + 11) * TP_BSIZE);
 553                 exit(X_FINOK);
 554         } /* stop here for size estimate */
 555
 556         if (pipeout || unlimited) {
 557                 tapesize += 11; /* 10 trailer blocks + 1 map header */
 558                 msg("estimated %ld tape blocks.\n", tapesize);
 559         } else {
 560                 double fetapes;
 561
 562                 if (blocksperfile)
 563                         fetapes = (double) tapesize / blocksperfile;
 564                 else if (cartridge) {
 565                         /* Estimate number of tapes, assuming streaming stops at
 566                            the end of each block written, and not in mid-block.
 567                            Assume no erroneous blocks; this can be compensated
 568                            for with an artificially low tape size. */
 569                         fetapes =
 570                         (         (double) tapesize     /* blocks */
 571                                 * TP_BSIZE      /* bytes/block */
 572                                 * (1.0/density) /* 0.1" / byte " */
 573                           +
 574                                   (double) tapesize     /* blocks */
 575                                 * (1.0/ntrec)   /* streaming-stops per block */
 576                                 * 15.48         /* 0.1" / streaming-stop " */
 577                         ) * (1.0 / tsize );     /* tape / 0.1" " */
 578                 } else {
 579                         /* Estimate number of tapes, for old fashioned 9-track
 580                            tape */
 581                         int tenthsperirg = (density == 625) ? 3 : 7;
 582                         fetapes =
 583                         (         (double) tapesize     /* blocks */
 584                                 * TP_BSIZE      /* bytes / block */
 585                                 * (1.0/density) /* 0.1" / byte " */
 586                           +
 587                                   (double) tapesize     /* blocks */
 588                                 * (1.0/ntrec)   /* IRG's / block */
 589                                 * tenthsperirg  /* 0.1" / IRG " */
 590                         ) * (1.0 / tsize );     /* tape / 0.1" " */
 591                 }
 592                 etapes = fetapes;               /* truncating assignment */
 593                 etapes++;
 594                 /* count the dumped inodes map on each additional tape */
 595                 tapesize += (etapes - 1) *
 596                         (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
 597                 tapesize += etapes + 10;        /* headers + 10 trailer blks */
 598                 msg("estimated %ld tape blocks on %3.2f tape(s).\n",
 599                     tapesize, fetapes);
 600         }
 601
 602         /*
 603          * Allocate tape buffer.
 604          */
 605         if (!alloctape())
 606                 quit(
 607         "can't allocate tape buffers - try a smaller blocking factor.\n");
 608
 609         startnewtape(1);
 610 #ifdef __linux__
 611         (void)time4(&(tstart_writing));
 612 #else
 613         (void)time((time_t *)&(tstart_writing));
 614 #endif
 615         dumpmap(usedinomap, TS_CLRI, maxino - 1);
 616
 617         msg("dumping (Pass III) [directories]\n");
 618         dirty = 0;              /* XXX just to get gcc to shut up */
 619         for (map = dumpdirmap, ino = 1; ino < maxino; ino++) {
 620                 if (((ino - 1) % NBBY) == 0)    /* map is offset by 1 */
 621                         dirty = *map++;
 622                 else
 623                         dirty >>= 1;
 624                 if ((dirty & 1) == 0)
 625                         continue;
 626                 /*
 627                  * Skip directory inodes deleted and maybe reallocated
 628                  */
 629                 dp = getino(ino);
 630                 if ((dp->di_mode & IFMT) != IFDIR)
 631                         continue;
 632 #ifdef  __linux__
 633                 /*
 634                  * Skip directory inodes deleted and not yes reallocated...
 635                  */
 636                 if (dp->di_nlink == 0 || dp->di_dtime != 0)
 637                         continue;
 638                 (void)dumpdirino(dp, ino);
 639 #else
 640                 (void)dumpino(dp, ino);
 641 #endif
 642         }
 643
 644         msg("dumping (Pass IV) [regular files]\n");
 645         for (map = dumpinomap, ino = 1; ino < maxino; ino++) {
 646                 if (((ino - 1) % NBBY) == 0)    /* map is offset by 1 */
 647                         dirty = *map++;
 648                 else
 649                         dirty >>= 1;
 650                 if ((dirty & 1) == 0)
 651                         continue;
 652                 /*
 653                  * Skip inodes deleted and reallocated as directories.
 654                  */
 655                 dp = getino(ino);
 656                 if ((dp->di_mode & IFMT) == IFDIR)
 657                         continue;
 658 #ifdef __linux__
 659                 /*
 660                  * No need to check here for deleted and not yes reallocated inodes
 661                  * since this is done in dumpino().
 662                  */
 663 #endif
 664                 (void)dumpino(dp, ino);
 665         }
 666
 667 #ifdef __linux__
 668         (void)time4(&(tend_writing));
 669 #else
 670         (void)time((time_t *)&(tend_writing));
 671 #endif
 672         spcl.c_type = TS_END;
 673         for (i = 0; i < ntrec; i++)
 674                 writeheader(maxino - 1);
 675
 676         tnow = trewind();
 677
 678         if (pipeout)
 679                 msg("%ld tape blocks (%.2fMB)\n", spcl.c_tapea,
 680                         ((double)spcl.c_tapea * TP_BSIZE / 1048576));
 681         else
 682                 msg("%ld tape blocks (%.2fMB) on %d volume(s)\n",
 683                     spcl.c_tapea,
 684                     ((double)spcl.c_tapea * TP_BSIZE / 1048576),
 685                     spcl.c_volume);
 686
 687         /* report dump performance, avoid division through zero */
 688         if (tend_writing - tstart_writing == 0)
 689                 msg("finished in less than a second\n");
 690         else
 691                 msg("finished in %d seconds, throughput %d KBytes/sec\n",
 692                     tend_writing - tstart_writing,
 693                     spcl.c_tapea / (tend_writing - tstart_writing));
 694
 695         putdumptime();
 696 #ifdef __linux__
 697         msg("Date of this level %c dump: %s", level,
 698                 spcl.c_date == 0 ? "the epoch\n" : ctime4(&spcl.c_date));
 699 #else
 700         msg("Date of this level %c dump: %s", level,
 701                 spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date));
 702 #endif
 703         msg("Date this dump completed:  %s", ctime(&tnow));
 704
 705         msg("Average transfer rate: %ld KB/s\n", xferrate / tapeno);
 706
 707         broadcast("DUMP IS DONE!\7\7\n");
 708         msg("DUMP IS DONE\n");
 709         Exit(X_FINOK);
 710         /* NOTREACHED */
 711         return 0;       /* gcc - shut up */
 712 }
 713
 714 static void
 715 usage(void)
 716 {
 717         char white[MAXPATHLEN];
 718         int i;
 719
 720         strncpy(white, __progname, MAXPATHLEN-1);
 721         white[MAXPATHLEN-1] = '\0';
 722         for (i=0; i<MAXPATHLEN; ++i)
 723                 if (white[i] != '\0') white[i] = ' ';
 724
 725         fprintf(stderr,
 726                 "%s %s\n", __progname, _DUMP_VERSION);
 727         fprintf(stderr,
 728                 "usage:\t%s [-0123456789ac"
 729 #ifdef KERBEROS
 730                 "k"
 731 #endif
 732                 "MnSu] [-B records] [-b blocksize] [-d density]\n"
 733                 "\t%s [-e inode#] [-f file] [-h level] [-s feet] [-T date] filesystem\n"
 734                 "\t%s [-W | -w]\n", __progname, white, __progname);
 735         exit(X_STARTUP);
 736 }
 737
 738 /*
 739  * Pick up a numeric argument.  It must be nonnegative and in the given
 740  * range (except that a vmax of 0 means unlimited).
 741  */
 742 static long
 743 numarg(const char *meaning, long vmin, long vmax)
 744 {
 745         char *p;
 746         long val;
 747
 748         val = strtol(optarg, &p, 10);
 749         if (*p)
 750                 errx(X_STARTUP, "illegal %s -- %s", meaning, optarg);
 751         if (val < vmin || (vmax && val > vmax))
 752                 errx(X_STARTUP, "%s must be between %ld and %ld", meaning, vmin, vmax);
 753         return (val);
 754 }
 755
 756 void
 757 sig(int signo)
 758 {
 759         switch(signo) {
 760         case SIGALRM:
 761         case SIGBUS:
 762         case SIGFPE:
 763         case SIGHUP:
 764         case SIGTERM:
 765         case SIGTRAP:
 766                 if (pipeout)
 767                         quit("Signal on pipe: cannot recover\n");
 768                 msg("Rewriting attempted as response to unknown signal.\n");
 769                 (void)fflush(stderr);
 770                 (void)fflush(stdout);
 771                 close_rewind();
 772                 exit(X_REWRITE);
 773                 /* NOTREACHED */
 774         case SIGSEGV:
 775                 msg("SIGSEGV: ABORTING!\n");
 776                 (void)signal(SIGSEGV, SIG_DFL);
 777                 (void)kill(0, SIGSEGV);
 778                 /* NOTREACHED */
 779         }
 780 }
 781
 782 char *
 783 rawname(char *cp)
 784 {
 785 #ifdef  __linux__
 786         return cp;
 787 #else   /* __linux__ */
 788         static char rawbuf[MAXPATHLEN];
 789         char *dp = strrchr(cp, '/');
 790
 791         if (dp == NULL)
 792                 return (NULL);
 793         *dp = '\0';
 794         (void)strncpy(rawbuf, cp, MAXPATHLEN - 1);
 795         rawbuf[MAXPATHLEN-1] = '\0';
 796         *dp = '/';
 797         (void)strncat(rawbuf, "/r", MAXPATHLEN - 1 - strlen(rawbuf));
 798         (void)strncat(rawbuf, dp + 1, MAXPATHLEN - 1 - strlen(rawbuf));
 799         return (rawbuf);
 800 #endif  /* __linux__ */
 801 }
 802
 803 /*
 804  * obsolete --
 805  *      Change set of key letters and ordered arguments into something
 806  *      getopt(3) will like.
 807  */
 808 static void
 809 obsolete(int *argcp, char **argvp[])
 810 {
 811         int argc, flags;
 812         char *ap, **argv, *flagsp=NULL, **nargv, *p=NULL;
 813
 814         /* Setup. */
 815         argv = *argvp;
 816         argc = *argcp;
 817
 818         /* Return if no arguments or first argument has leading dash. */
 819         ap = argv[1];
 820         if (argc == 1 || *ap == '-')
 821                 return;
 822
 823         /* Allocate space for new arguments. */
 824         if ((*argvp = nargv = malloc((argc + 1) * sizeof(char *))) == NULL ||
 825             (p = flagsp = malloc(strlen(ap) + 2)) == NULL)
 826                 err(X_STARTUP, "malloc new args");
 827
 828         *nargv++ = *argv;
 829         argv += 2;
 830
 831         for (flags = 0; *ap; ++ap) {
 832                 switch (*ap) {
 833                 case 'B':
 834                 case 'b':
 835                 case 'd':
 836                 case 'e':
 837                 case 'f':
 838                 case 'F':
 839                 case 'h':
 840                 case 'L':
 841                 case 's':
 842                 case 'T':
 843                         if (*argv == NULL) {
 844                                 warnx("option requires an argument -- %c", *ap);
 845                                 usage();
 846                         }
 847                         if ((nargv[0] = malloc(strlen(*argv) + 2 + 1)) == NULL)
 848                                 err(X_STARTUP, "malloc arg");
 849                         nargv[0][0] = '-';
 850                         nargv[0][1] = *ap;
 851                         (void)strcpy(&nargv[0][2], *argv);
 852                         ++argv;
 853                         ++nargv;
 854                         break;
 855                 default:
 856                         if (!flags) {
 857                                 *p++ = '-';
 858                                 flags = 1;
 859                         }
 860                         *p++ = *ap;
 861                         break;
 862                 }
 863         }
 864
 865         /* Terminate flags. */
 866         if (flags) {
 867                 *p = '\0';
 868                 *nargv++ = flagsp;
 869         }
 870
 871         /* Copy remaining arguments. */
 872         while ((*nargv++ = *argv++));
 873
 874         /* Update argument count. */
 875         *argcp = nargv - *argvp - 1;
 876 }