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 1.15 2000/02/04 20:22:21 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[NAME_MAX];
 125         char pathname[NAME_MAX];
 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         temp = _PATH_DTMP;
 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:h:kL:Mns:ST:uWw"
 159 #else
 160 #define optstring "0123456789aB:b:cd:e: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 'h':
 214                         honorlevel = numarg("honor level", 0L, 10L);
 215                         break;
 216
 217 #ifdef KERBEROS
 218                 case 'k':
 219                         dokerberos = 1;
 220                         break;
 221 #endif
 222
 223                 case 'L':
 224                         /*
 225                          * Note that although there are LBLSIZE characters,
 226                          * the last must be '\0', so the limit on strlen()
 227                          * is really LBLSIZE-1.
 228                          */
 229                         strncpy(labelstr, optarg, LBLSIZE);
 230                         labelstr[LBLSIZE-1] = '\0';
 231                         if (strlen(optarg) > LBLSIZE-1) {
 232                                 msg(
 233                 "WARNING Label `%s' is larger than limit of %d characters.\n",
 234                                     optarg, LBLSIZE-1);
 235                                 msg("WARNING: Using truncated label `%s'.\n",
 236                                     labelstr);
 237                         }
 238                         break;
 239
 240                 case 'M':               /* multi-volume flag */
 241                         Mflag = 1;
 242                         break;
 243
 244                 case 'n':               /* notify operators */
 245                         notify = 1;
 246                         break;
 247
 248                 case 's':               /* tape size, feet */
 249                         tsize = numarg("tape size", 1L, 0L) * 12 * 10;
 250                         break;
 251
 252                 case 'S':
 253                         sizest = 1;     /* return size estimate only */
 254                         break;
 255
 256                 case 'T':               /* time of last dump */
 257                         spcl.c_ddate = unctime(optarg);
 258                         if (spcl.c_ddate < 0) {
 259                                 (void)fprintf(stderr, "bad time \"%s\"\n",
 260                                     optarg);
 261                                 exit(X_STARTUP);
 262                         }
 263                         Tflag = 1;
 264                         lastlevel = '?';
 265                         break;
 266
 267                 case 'u':               /* update dumpdates */
 268                         uflag = 1;
 269                         break;
 270
 271                 case 'W':               /* what to do */
 272                 case 'w':
 273                         lastdump(ch);
 274                         exit(X_FINOK);  /* do nothing else */
 275
 276                 default:
 277                         usage();
 278                 }
 279         argc -= optind;
 280         argv += optind;
 281
 282         if (argc < 1) {
 283                 (void)fprintf(stderr, "Must specify disk or filesystem\n");
 284                 exit(X_STARTUP);
 285         }
 286         disk = *argv++;
 287         argc--;
 288         if (argc >= 1) {
 289                 (void)fprintf(stderr, "Unknown arguments to dump:");
 290                 while (argc--)
 291                         (void)fprintf(stderr, " %s", *argv++);
 292                 (void)fprintf(stderr, "\n");
 293                 exit(X_STARTUP);
 294         }
 295         if (Tflag && uflag) {
 296                 (void)fprintf(stderr,
 297                     "You cannot use the T and u flags together.\n");
 298                 exit(X_STARTUP);
 299         }
 300         if (strcmp(tapeprefix, "-") == 0) {
 301                 pipeout++;
 302                 tapeprefix = "standard output";
 303         }
 304
 305         if (blocksperfile)
 306                 blocksperfile = blocksperfile / ntrec * ntrec; /* round down */
 307         else if (!unlimited) {
 308                 /*
 309                  * Determine how to default tape size and density
 310                  *
 311                  *              density                         tape size
 312                  * 9-track      1600 bpi (160 bytes/.1")        2300 ft.
 313                  * 9-track      6250 bpi (625 bytes/.1")        2300 ft.
 314                  * cartridge    8000 bpi (100 bytes/.1")        1700 ft.
 315                  *                                              (450*4 - slop)
 316                  * hilit19 hits again: "
 317                  */
 318                 if (density == 0)
 319                         density = cartridge ? 100 : 160;
 320                 if (tsize == 0)
 321                         tsize = cartridge ? 1700L*120L : 2300L*120L;
 322         }
 323
 324         if (strchr(tapeprefix, ':')) {
 325                 host = tapeprefix;
 326                 tapeprefix = strchr(host, ':');
 327                 *tapeprefix++ = '\0';
 328 #ifdef RDUMP
 329                 if (index(tapeprefix, '\n')) {
 330                     (void)fprintf(stderr, "invalid characters in tape\n");
 331                     exit(X_STARTUP);
 332                 }
 333                 if (rmthost(host) == 0)
 334                         exit(X_STARTUP);
 335 #else
 336                 (void)fprintf(stderr, "remote dump not enabled\n");
 337                 exit(X_STARTUP);
 338 #endif
 339         }
 340         (void)setuid(getuid()); /* rmthost() is the only reason to be setuid */
 341
 342         if (signal(SIGHUP, SIG_IGN) != SIG_IGN)
 343                 signal(SIGHUP, sig);
 344         if (signal(SIGTRAP, SIG_IGN) != SIG_IGN)
 345                 signal(SIGTRAP, sig);
 346         if (signal(SIGFPE, SIG_IGN) != SIG_IGN)
 347                 signal(SIGFPE, sig);
 348         if (signal(SIGBUS, SIG_IGN) != SIG_IGN)
 349                 signal(SIGBUS, sig);
 350         if (signal(SIGSEGV, SIG_IGN) != SIG_IGN)
 351                 signal(SIGSEGV, sig);
 352         if (signal(SIGTERM, SIG_IGN) != SIG_IGN)
 353                 signal(SIGTERM, sig);
 354         if (signal(SIGINT, interrupt) == SIG_IGN)
 355                 signal(SIGINT, SIG_IGN);
 356         set_operators();        /* /etc/group snarfed */
 357         getfstab();             /* /etc/fstab snarfed */
 358         /*
 359          *      disk may end in / and this can confuse
 360          *      fstabsearch.
 361          */
 362         if (strlen(disk) > 1 && disk[strlen(disk) - 1] == '/')
 363           disk[strlen(disk) - 1] = '\0';
 364         /*
 365          *      disk can be either the full special file name,
 366          *      the suffix of the special file name,
 367          *      the special name missing the leading '/',
 368          *      the file system name with or without the leading '/'.
 369          */
 370         if ((dt = fstabsearch(disk)) != NULL) {
 371                 disk = rawname(dt->fs_spec);
 372                 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
 373                 (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN);
 374 #ifdef  __linux__
 375         } else {
 376                 /*
 377                  * The argument was not found in the fstab
 378                  * assume that this is a subtree and search for it
 379                  */
 380 #ifdef  HAVE_REALPATH
 381                 if (realpath(disk, pathname) == NULL)
 382 #endif
 383                         strcpy(pathname, disk);
 384                 dt = fstabsearchdir(pathname, directory);
 385                 if (dt != NULL) {
 386                         char name[MAXPATHLEN];
 387                         (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
 388                         (void)sprintf(name, "%s (dir %s)",
 389                                       dt->fs_file, directory);
 390                         (void)strncpy(spcl.c_filesys, name, NAMELEN);
 391                         disk = rawname(dt->fs_spec);
 392                 } else {
 393                         (void)strncpy(spcl.c_dev, disk, NAMELEN);
 394                         (void)strncpy(spcl.c_filesys, "an unlisted file system",
 395                             NAMELEN);
 396                 }
 397         }
 398 #else
 399         } else {
 400                 (void)strncpy(spcl.c_dev, disk, NAMELEN);
 401                 (void)strncpy(spcl.c_filesys, "an unlisted file system",
 402                     NAMELEN);
 403         }
 404 #endif
 405         spcl.c_dev[NAMELEN-1]='\0';
 406         spcl.c_filesys[NAMELEN-1]='\0';
 407         (void)strncpy(spcl.c_label, labelstr, sizeof(spcl.c_label) - 1);
 408         (void)gethostname(spcl.c_host, NAMELEN);
 409         spcl.c_level = level - '0';
 410         spcl.c_type = TS_TAPE;
 411         if (!Tflag)
 412                 getdumptime(uflag);             /* dumpdates snarfed */
 413
 414         if (spcl.c_ddate == 0 && spcl.c_level) {
 415                 msg("WARNING: There is no inferior level dump on this filesystem\n");
 416                 msg("WARNING: Assuming a level 0 dump by default\n");
 417                 level = '0';
 418                 spcl.c_level = 0;
 419         }
 420
 421         if (Mflag)
 422                 snprintf(tape, NAME_MAX, "%s%03d", tapeprefix, tapeno + 1);
 423         else
 424                 strncpy(tape, tapeprefix, NAME_MAX);
 425         tape[NAME_MAX - 1] = '\0';
 426
 427         if (!sizest) {
 428
 429                 msg("Date of this level %c dump: %s", level,
 430 #ifdef  __linux__
 431                         spcl.c_date == 0 ? "the epoch\n" : ctime4(&spcl.c_date));
 432 #else
 433                         spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date));
 434 #endif
 435                 msg("Date of last level %c dump: %s", lastlevel,
 436 #ifdef  __linux__
 437                         spcl.c_ddate == 0 ? "the epoch\n" : ctime4(&spcl.c_ddate));
 438 #else
 439                         spcl.c_ddate == 0 ? "the epoch\n" : ctime(&spcl.c_ddate));
 440 #endif
 441                 msg("Dumping %s (%s) ", disk, spcl.c_filesys);
 442                 if (host)
 443                         msgtail("to %s on host %s\n", tape, host);
 444                 else
 445                         msgtail("to %s\n", tape);
 446                 msg("Label: %s\n", labelstr);
 447
 448         } /* end of size estimate */
 449
 450 #ifdef  __linux__
 451         retval = dump_fs_open(disk, &fs);
 452         if (retval) {
 453                 com_err(disk, retval, "while opening filesystem");
 454                 if (retval == EXT2_ET_REV_TOO_HIGH)
 455                         printf ("Get a newer version of dump!\n");
 456                 exit(X_STARTUP);
 457         }
 458         if (fs->super->s_rev_level > DUMP_CURRENT_REV) {
 459                 com_err(disk, retval, "while opening filesystem");
 460                 printf ("Get a newer version of dump!\n");
 461                 exit(X_STARTUP);
 462         }
 463         if ((diskfd = open(disk, O_RDONLY)) < 0) {
 464                 msg("Cannot open %s\n", disk);
 465                 exit(X_STARTUP);
 466         }
 467         sync();
 468         dev_bsize = DEV_BSIZE;
 469         dev_bshift = ffs(dev_bsize) - 1;
 470         if (dev_bsize != (1 << dev_bshift))
 471                 quit("dev_bsize (%d) is not a power of 2", dev_bsize);
 472         tp_bshift = ffs(TP_BSIZE) - 1;
 473         if (TP_BSIZE != (1 << tp_bshift))
 474                 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
 475         maxino = fs->super->s_inodes_count;
 476 #if     0
 477         spcl.c_flags |= DR_NEWINODEFMT;
 478 #endif
 479 #else   /* __linux __*/
 480         if ((diskfd = open(disk, O_RDONLY)) < 0) {
 481                 msg("Cannot open %s\n", disk);
 482                 exit(X_STARTUP);
 483         }
 484         sync();
 485         sblock = (struct fs *)sblock_buf;
 486         bread(SBOFF, (char *) sblock, SBSIZE);
 487         if (sblock->fs_magic != FS_MAGIC)
 488                 quit("bad sblock magic number\n");
 489         dev_bsize = sblock->fs_fsize / fsbtodb(sblock, 1);
 490         dev_bshift = ffs(dev_bsize) - 1;
 491         if (dev_bsize != (1 << dev_bshift))
 492                 quit("dev_bsize (%d) is not a power of 2", dev_bsize);
 493         tp_bshift = ffs(TP_BSIZE) - 1;
 494         if (TP_BSIZE != (1 << tp_bshift))
 495                 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
 496 #ifdef FS_44INODEFMT
 497         if (sblock->fs_inodefmt >= FS_44INODEFMT)
 498                 spcl.c_flags |= DR_NEWINODEFMT;
 499 #endif
 500         maxino = sblock->fs_ipg * sblock->fs_ncg;
 501 #endif  /* __linux__ */
 502         mapsize = roundup(howmany(maxino, NBBY), TP_BSIZE);
 503         usedinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
 504         dumpdirmap = (char *)calloc((unsigned) mapsize, sizeof(char));
 505         dumpinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
 506         tapesize = 3 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
 507
 508         nonodump = spcl.c_level < honorlevel;
 509
 510 #if defined(SIGINFO)
 511         (void)signal(SIGINFO, statussig);
 512 #endif
 513
 514         if (!sizest)
 515                 msg("mapping (Pass I) [regular files]\n");
 516 #ifdef  __linux__
 517         if (directory[0] == 0)
 518                 anydirskipped = mapfiles(maxino, &tapesize);
 519         else
 520                 anydirskipped = mapfilesfromdir(maxino, &tapesize, directory);
 521 #else
 522         anydirskipped = mapfiles(maxino, &tapesize);
 523 #endif
 524
 525         if (!sizest)
 526                 msg("mapping (Pass II) [directories]\n");
 527         while (anydirskipped) {
 528                 anydirskipped = mapdirs(maxino, &tapesize);
 529         }
 530
 531         if (sizest) {
 532                 printf("%.0f\n", ((double)tapesize + 10) * TP_BSIZE);
 533                 exit(X_FINOK);
 534         } /* stop here for size estimate */
 535
 536         if (pipeout || unlimited) {
 537                 tapesize += 10; /* 10 trailer blocks */
 538                 msg("estimated %ld tape blocks.\n", tapesize);
 539         } else {
 540                 double fetapes;
 541
 542                 if (blocksperfile)
 543                         fetapes = (double) tapesize / blocksperfile;
 544                 else if (cartridge) {
 545                         /* Estimate number of tapes, assuming streaming stops at
 546                            the end of each block written, and not in mid-block.
 547                            Assume no erroneous blocks; this can be compensated
 548                            for with an artificially low tape size. */
 549                         fetapes =
 550                         (         (double) tapesize     /* blocks */
 551                                 * TP_BSIZE      /* bytes/block */
 552                                 * (1.0/density) /* 0.1" / byte " */
 553                           +
 554                                   (double) tapesize     /* blocks */
 555                                 * (1.0/ntrec)   /* streaming-stops per block */
 556                                 * 15.48         /* 0.1" / streaming-stop " */
 557                         ) * (1.0 / tsize );     /* tape / 0.1" " */
 558                 } else {
 559                         /* Estimate number of tapes, for old fashioned 9-track
 560                            tape */
 561                         int tenthsperirg = (density == 625) ? 3 : 7;
 562                         fetapes =
 563                         (         (double) tapesize     /* blocks */
 564                                 * TP_BSIZE      /* bytes / block */
 565                                 * (1.0/density) /* 0.1" / byte " */
 566                           +
 567                                   (double) tapesize     /* blocks */
 568                                 * (1.0/ntrec)   /* IRG's / block */
 569                                 * tenthsperirg  /* 0.1" / IRG " */
 570                         ) * (1.0 / tsize );     /* tape / 0.1" " */
 571                 }
 572                 etapes = fetapes;               /* truncating assignment */
 573                 etapes++;
 574                 /* count the dumped inodes map on each additional tape */
 575                 tapesize += (etapes - 1) *
 576                         (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
 577                 tapesize += etapes + 10;        /* headers + 10 trailer blks */
 578                 msg("estimated %ld tape blocks on %3.2f tape(s).\n",
 579                     tapesize, fetapes);
 580         }
 581
 582         /*
 583          * Allocate tape buffer.
 584          */
 585         if (!alloctape())
 586                 quit(
 587         "can't allocate tape buffers - try a smaller blocking factor.\n");
 588
 589         startnewtape(1);
 590 #ifdef __linux__
 591         (void)time4(&(tstart_writing));
 592 #else
 593         (void)time((time_t *)&(tstart_writing));
 594 #endif
 595         dumpmap(usedinomap, TS_CLRI, maxino - 1);
 596
 597         msg("dumping (Pass III) [directories]\n");
 598         dirty = 0;              /* XXX just to get gcc to shut up */
 599         for (map = dumpdirmap, ino = 1; ino < maxino; ino++) {
 600                 if (((ino - 1) % NBBY) == 0)    /* map is offset by 1 */
 601                         dirty = *map++;
 602                 else
 603                         dirty >>= 1;
 604                 if ((dirty & 1) == 0)
 605                         continue;
 606                 /*
 607                  * Skip directory inodes deleted and maybe reallocated
 608                  */
 609                 dp = getino(ino);
 610                 if ((dp->di_mode & IFMT) != IFDIR)
 611                         continue;
 612 #ifdef  __linux__
 613                 /*
 614                  * Skip directory inodes deleted and not yes reallocated...
 615                  */
 616                 if (dp->di_nlink == 0 || dp->di_dtime != 0)
 617                         continue;
 618                 (void)dumpdirino(dp, ino);
 619 #else
 620                 (void)dumpino(dp, ino);
 621 #endif
 622         }
 623
 624         msg("dumping (Pass IV) [regular files]\n");
 625         for (map = dumpinomap, ino = 1; ino < maxino; ino++) {
 626                 if (((ino - 1) % NBBY) == 0)    /* map is offset by 1 */
 627                         dirty = *map++;
 628                 else
 629                         dirty >>= 1;
 630                 if ((dirty & 1) == 0)
 631                         continue;
 632                 /*
 633                  * Skip inodes deleted and reallocated as directories.
 634                  */
 635                 dp = getino(ino);
 636                 if ((dp->di_mode & IFMT) == IFDIR)
 637                         continue;
 638 #ifdef __linux__
 639                 /*
 640                  * No need to check here for deleted and not yes reallocated inodes
 641                  * since this is done in dumpino().
 642                  */
 643 #endif
 644                 (void)dumpino(dp, ino);
 645         }
 646
 647 #ifdef __linux__
 648         (void)time4(&(tend_writing));
 649 #else
 650         (void)time((time_t *)&(tend_writing));
 651 #endif
 652         spcl.c_type = TS_END;
 653         for (i = 0; i < ntrec; i++)
 654                 writeheader(maxino - 1);
 655         if (pipeout)
 656                 msg("DUMP: %ld tape blocks\n", spcl.c_tapea);
 657         else
 658                 msg("DUMP: %ld tape blocks on %d volumes(s)\n",
 659                     spcl.c_tapea, spcl.c_volume);
 660
 661         /* report dump performance, avoid division through zero */
 662         if (tend_writing - tstart_writing == 0)
 663                 msg("finished in less than a second\n");
 664         else
 665                 msg("finished in %d seconds, throughput %d KBytes/sec\n",
 666                     tend_writing - tstart_writing,
 667                     spcl.c_tapea / (tend_writing - tstart_writing));
 668
 669         tnow = do_stats();
 670         putdumptime();
 671 #ifdef __linux__
 672         msg("DUMP: Date of this level %c dump: %s", level,
 673                 spcl.c_date == 0 ? "the epoch\n" : ctime4(&spcl.c_date));
 674 #else
 675         msg("DUMP: Date of this level %c dump: %s", level,
 676                 spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date));
 677 #endif
 678         msg("DUMP: Date this dump completed:  %s", ctime(&tnow));
 679
 680         msg("DUMP: Average transfer rate: %ld KB/s\n", xferrate / tapeno);
 681
 682         trewind();
 683         broadcast("DUMP IS DONE!\7\7\n");
 684         msg("DUMP IS DONE\n");
 685         Exit(X_FINOK);
 686         /* NOTREACHED */
 687         return 0;       /* gcc - shut up */
 688 }
 689
 690 static void
 691 usage(void)
 692 {
 693         char white[MAXPATHLEN];
 694         int i;
 695
 696         strncpy(white, __progname, MAXPATHLEN-1);
 697         white[MAXPATHLEN-1] = '\0';
 698         for (i=0; i<MAXPATHLEN; ++i)
 699                 if (white[i] != '\0') white[i] = ' ';
 700
 701         fprintf(stderr,
 702                 "%s %s\n", __progname, _DUMP_VERSION);
 703         fprintf(stderr,
 704                 "usage:\t%s [-0123456789ac"
 705 #ifdef KERBEROS
 706                 "k"
 707 #endif
 708                 "MnSu] [-B records] [-b blocksize] [-d density]\n"
 709                 "\t%s [-e inode#] [-f file] [-h level] [-s feet] [-T date] filesystem\n"
 710                 "\t%s [-W | -w]\n", __progname, white, __progname);
 711         exit(X_STARTUP);
 712 }
 713
 714 /*
 715  * Pick up a numeric argument.  It must be nonnegative and in the given
 716  * range (except that a vmax of 0 means unlimited).
 717  */
 718 static long
 719 numarg(const char *meaning, long vmin, long vmax)
 720 {
 721         char *p;
 722         long val;
 723
 724         val = strtol(optarg, &p, 10);
 725         if (*p)
 726                 errx(X_STARTUP, "illegal %s -- %s", meaning, optarg);
 727         if (val < vmin || (vmax && val > vmax))
 728                 errx(X_STARTUP, "%s must be between %ld and %ld", meaning, vmin, vmax);
 729         return (val);
 730 }
 731
 732 void
 733 sig(int signo)
 734 {
 735         switch(signo) {
 736         case SIGALRM:
 737         case SIGBUS:
 738         case SIGFPE:
 739         case SIGHUP:
 740         case SIGTERM:
 741         case SIGTRAP:
 742                 if (pipeout)
 743                         quit("Signal on pipe: cannot recover\n");
 744                 msg("Rewriting attempted as response to unknown signal.\n");
 745                 (void)fflush(stderr);
 746                 (void)fflush(stdout);
 747                 close_rewind();
 748                 exit(X_REWRITE);
 749                 /* NOTREACHED */
 750         case SIGSEGV:
 751                 msg("SIGSEGV: ABORTING!\n");
 752                 (void)signal(SIGSEGV, SIG_DFL);
 753                 (void)kill(0, SIGSEGV);
 754                 /* NOTREACHED */
 755         }
 756 }
 757
 758 char *
 759 rawname(char *cp)
 760 {
 761 #ifdef  __linux__
 762         return cp;
 763 #else   /* __linux__ */
 764         static char rawbuf[MAXPATHLEN];
 765         char *dp = strrchr(cp, '/');
 766
 767         if (dp == NULL)
 768                 return (NULL);
 769         *dp = '\0';
 770         (void)strncpy(rawbuf, cp, MAXPATHLEN - 1);
 771         rawbuf[MAXPATHLEN-1] = '\0';
 772         *dp = '/';
 773         (void)strncat(rawbuf, "/r", MAXPATHLEN - 1 - strlen(rawbuf));
 774         (void)strncat(rawbuf, dp + 1, MAXPATHLEN - 1 - strlen(rawbuf));
 775         return (rawbuf);
 776 #endif  /* __linux__ */
 777 }
 778
 779 /*
 780  * obsolete --
 781  *      Change set of key letters and ordered arguments into something
 782  *      getopt(3) will like.
 783  */
 784 static void
 785 obsolete(int *argcp, char **argvp[])
 786 {
 787         int argc, flags;
 788         char *ap, **argv, *flagsp=NULL, **nargv, *p=NULL;
 789
 790         /* Setup. */
 791         argv = *argvp;
 792         argc = *argcp;
 793
 794         /* Return if no arguments or first argument has leading dash. */
 795         ap = argv[1];
 796         if (argc == 1 || *ap == '-')
 797                 return;
 798
 799         /* Allocate space for new arguments. */
 800         if ((*argvp = nargv = malloc((argc + 1) * sizeof(char *))) == NULL ||
 801             (p = flagsp = malloc(strlen(ap) + 2)) == NULL)
 802                 err(X_STARTUP, "malloc new args");
 803
 804         *nargv++ = *argv;
 805         argv += 2;
 806
 807         for (flags = 0; *ap; ++ap) {
 808                 switch (*ap) {
 809                 case 'B':
 810                 case 'b':
 811                 case 'd':
 812                 case 'f':
 813                 case 'h':
 814                 case 's':
 815                 case 'T':
 816                         if (*argv == NULL) {
 817                                 warnx("option requires an argument -- %c", *ap);
 818                                 usage();
 819                         }
 820                         if ((nargv[0] = malloc(strlen(*argv) + 2 + 1)) == NULL)
 821                                 err(X_STARTUP, "malloc arg");
 822                         nargv[0][0] = '-';
 823                         nargv[0][1] = *ap;
 824                         (void)strcpy(&nargv[0][2], *argv);
 825                         ++argv;
 826                         ++nargv;
 827                         break;
 828                 default:
 829                         if (!flags) {
 830                                 *p++ = '-';
 831                                 flags = 1;
 832                         }
 833                         *p++ = *ap;
 834                         break;
 835                 }
 836         }
 837
 838         /* Terminate flags. */
 839         if (flags) {
 840                 *p = '\0';
 841                 *nargv++ = flagsp;
 842         }
 843
 844         /* Copy remaining arguments. */
 845         while ((*nargv++ = *argv++));
 846
 847         /* Update argument count. */
 848         *argcp = nargv - *argvp - 1;
 849 }