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 1.25 2000/09/01 14:40:27 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 #include "bylabel.h"
  83
  84 #ifndef SBOFF
  85 #define SBOFF (SBLOCK * DEV_BSIZE)
  86 #endif
  87
  88 int     notify = 0;     /* notify operator flag */
  89 int     blockswritten = 0;      /* number of blocks written on current tape */
  90 int     tapeno = 0;     /* current tape number */
  91 int     density = 0;    /* density in bytes/0.1" " <- this is for hilit19 */
  92 int     ntrec = NTREC;  /* # tape blocks in each tape record */
  93 int     cartridge = 0;  /* Assume non-cartridge tape */
  94 int     dokerberos = 0; /* Use Kerberos authentication */
  95 long    dev_bsize = 1;  /* recalculated below */
  96 long    blocksperfile;  /* output blocks per file */
  97 char    *host = NULL;   /* remote host (if any) */
  98 int     sizest = 0;     /* return size estimate only */
  99
 100 #ifdef  __linux__
 101 char    *__progname;
 102 #endif
 103
 104 int     maxbsize = 64*1024;     /* XXX MAXBSIZE from sys/param.h */
 105 static long numarg __P((const char *, long, long));
 106 static void obsolete __P((int *, char **[]));
 107 static void usage __P((void));
 108
 109 ino_t iexclude_list[IEXCLUDE_MAXNUM];   /* the inode exclude list */
 110 int iexclude_num = 0;                   /* number of elements in the list */
 111
 112 int
 113 main(int argc, char *argv[])
 114 {
 115         register ino_t ino;
 116         register int dirty;
 117         register struct dinode *dp;
 118         register struct fstab *dt;
 119         register char *map;
 120         register int ch;
 121         int i, anydirskipped, bflag = 0, Tflag = 0, honorlevel = 1;
 122         ino_t maxino;
 123 #ifdef  __linux__
 124         errcode_t retval;
 125         char directory[MAXPATHLEN];
 126         char pathname[MAXPATHLEN];
 127 #endif
 128         time_t tnow;
 129         char labelstr[LBLSIZE];
 130         char *diskparam;
 131
 132         spcl.c_date = 0;
 133 #ifdef  __linux__
 134         (void)time4(&spcl.c_date);
 135 #else
 136         (void)time((time_t *)&spcl.c_date);
 137 #endif
 138
 139 #ifdef __linux__
 140         __progname = argv[0];
 141         directory[0] = 0;
 142         initialize_ext2_error_table();
 143 #endif
 144
 145         tsize = 0;      /* Default later, based on 'c' option for cart tapes */
 146         eot_script = NULL;
 147         if ((tapeprefix = getenv("TAPE")) == NULL)
 148                 tapeprefix = _PATH_DEFTAPE;
 149         dumpdates = _PATH_DUMPDATES;
 150         strcpy(labelstr, "none");       /* XXX safe strcpy. */
 151         if (TP_BSIZE / DEV_BSIZE == 0 || TP_BSIZE % DEV_BSIZE != 0)
 152                 quit("TP_BSIZE must be a multiple of DEV_BSIZE\n");
 153         level = '0';
 154
 155         if (argc < 2)
 156                 usage();
 157
 158         obsolete(&argc, &argv);
 159 #ifdef KERBEROS
 160 #define optstring "0123456789aB:b:cd:e:f:F:h:kL:Mns:ST:uWw"
 161 #else
 162 #define optstring "0123456789aB:b:cd:e:f:F:h:L:Mns:ST:uWw"
 163 #endif
 164         while ((ch = getopt(argc, argv, optstring)) != -1)
 165 #undef optstring
 166                 switch (ch) {
 167                 /* dump level */
 168                 case '0': case '1': case '2': case '3': case '4':
 169                 case '5': case '6': case '7': case '8': case '9':
 170                         level = ch;
 171                         break;
 172
 173                 case 'a':               /* `auto-size', Write to EOM. */
 174                         unlimited = 1;
 175                         break;
 176
 177                 case 'B':               /* blocks per output file */
 178                         blocksperfile = numarg("number of blocks per file",
 179                             1L, 0L);
 180                         break;
 181
 182                 case 'b':               /* blocks per tape write */
 183                         ntrec = numarg("number of blocks per write",
 184                             1L, 1000L);
 185                         if (ntrec > maxbsize/1024) {
 186                                 msg("Please choose a blocksize <= %dKB\n",
 187                                         maxbsize/1024);
 188                                 exit(X_STARTUP);
 189                         }
 190                         bflag = 1;
 191                         break;
 192
 193                 case 'c':               /* Tape is cart. not 9-track */
 194                         cartridge = 1;
 195                         break;
 196
 197                 case 'd':               /* density, in bits per inch */
 198                         density = numarg("density", 10L, 327670L) / 10;
 199                         if (density >= 625 && !bflag)
 200                                 ntrec = HIGHDENSITYTREC;
 201                         break;
 202
 203                                         /* 04-Feb-00 ILC */
 204                 case 'e':               /* exclude an inode */
 205                         if (iexclude_num == IEXCLUDE_MAXNUM) {
 206                                 (void)fprintf(stderr, "Too many -e options\n");
 207                                 exit(X_STARTUP);
 208                         }
 209                         iexclude_list[iexclude_num++] = numarg("inode to exclude",0L,0L);
 210                         if (iexclude_list[iexclude_num-1] <= ROOTINO) {
 211                                 (void)fprintf(stderr, "Cannot exclude inode %d\n", iexclude_list[iexclude_num-1]);
 212                                 exit(X_STARTUP);
 213                         }
 214                         msg("Added %d to exclude list\n",
 215                             iexclude_list[iexclude_num-1]);
 216                         break;
 217
 218                 case 'f':               /* output file */
 219                         tapeprefix = optarg;
 220                         break;
 221
 222                 case 'F':               /* end of tape script */
 223                         eot_script = optarg;
 224                         break;
 225
 226                 case 'h':
 227                         honorlevel = numarg("honor level", 0L, 10L);
 228                         break;
 229
 230 #ifdef KERBEROS
 231                 case 'k':
 232                         dokerberos = 1;
 233                         break;
 234 #endif
 235
 236                 case 'L':
 237                         /*
 238                          * Note that although there are LBLSIZE characters,
 239                          * the last must be '\0', so the limit on strlen()
 240                          * is really LBLSIZE-1.
 241                          */
 242                         strncpy(labelstr, optarg, LBLSIZE);
 243                         labelstr[LBLSIZE-1] = '\0';
 244                         if (strlen(optarg) > LBLSIZE-1) {
 245                                 msg(
 246                 "WARNING Label `%s' is larger than limit of %d characters.\n",
 247                                     optarg, LBLSIZE-1);
 248                                 msg("WARNING: Using truncated label `%s'.\n",
 249                                     labelstr);
 250                         }
 251                         break;
 252
 253                 case 'M':               /* multi-volume flag */
 254                         Mflag = 1;
 255                         break;
 256
 257                 case 'n':               /* notify operators */
 258                         notify = 1;
 259                         break;
 260
 261                 case 's':               /* tape size, feet */
 262                         tsize = numarg("tape size", 1L, 0L) * 12 * 10;
 263                         break;
 264
 265                 case 'S':
 266                         sizest = 1;     /* return size estimate only */
 267                         break;
 268
 269                 case 'T':               /* time of last dump */
 270                         spcl.c_ddate = unctime(optarg);
 271                         if (spcl.c_ddate < 0) {
 272                                 (void)fprintf(stderr, "bad time \"%s\"\n",
 273                                     optarg);
 274                                 exit(X_STARTUP);
 275                         }
 276                         Tflag = 1;
 277                         lastlevel = '?';
 278                         break;
 279
 280                 case 'u':               /* update dumpdates */
 281                         uflag = 1;
 282                         break;
 283
 284                 case 'W':               /* what to do */
 285                 case 'w':
 286                         lastdump(ch);
 287                         exit(X_FINOK);  /* do nothing else */
 288
 289                 default:
 290                         usage();
 291                 }
 292         argc -= optind;
 293         argv += optind;
 294
 295         if (argc < 1) {
 296                 (void)fprintf(stderr, "Must specify disk or filesystem\n");
 297                 exit(X_STARTUP);
 298         }
 299         diskparam = *argv++;
 300         if (strlen(diskparam) >= MAXPATHLEN) {
 301                 (void)fprintf(stderr, "Disk or filesystem name too long: %s\n", diskparam);
 302                 exit(X_STARTUP);
 303         }
 304         argc--;
 305         if (argc >= 1) {
 306                 (void)fprintf(stderr, "Unknown arguments to dump:");
 307                 while (argc--)
 308                         (void)fprintf(stderr, " %s", *argv++);
 309                 (void)fprintf(stderr, "\n");
 310                 exit(X_STARTUP);
 311         }
 312         if (Tflag && uflag) {
 313                 (void)fprintf(stderr,
 314                     "You cannot use the T and u flags together.\n");
 315                 exit(X_STARTUP);
 316         }
 317         if (strcmp(tapeprefix, "-") == 0) {
 318                 pipeout++;
 319                 tapeprefix = "standard output";
 320         }
 321
 322         if (blocksperfile)
 323                 blocksperfile = blocksperfile / ntrec * ntrec; /* round down */
 324         else if (!unlimited) {
 325                 /*
 326                  * Determine how to default tape size and density
 327                  *
 328                  *              density                         tape size
 329                  * 9-track      1600 bpi (160 bytes/.1")        2300 ft.
 330                  * 9-track      6250 bpi (625 bytes/.1")        2300 ft.
 331                  * cartridge    8000 bpi (100 bytes/.1")        1700 ft.
 332                  *                                              (450*4 - slop)
 333                  * hilit19 hits again: "
 334                  */
 335                 if (density == 0)
 336                         density = cartridge ? 100 : 160;
 337                 if (tsize == 0)
 338                         tsize = cartridge ? 1700L*120L : 2300L*120L;
 339         }
 340
 341         if (strchr(tapeprefix, ':')) {
 342                 host = tapeprefix;
 343                 tapeprefix = strchr(host, ':');
 344                 *tapeprefix++ = '\0';
 345 #ifdef RDUMP
 346                 if (index(tapeprefix, '\n')) {
 347                     (void)fprintf(stderr, "invalid characters in tape\n");
 348                     exit(X_STARTUP);
 349                 }
 350                 if (rmthost(host) == 0)
 351                         exit(X_STARTUP);
 352 #else
 353                 (void)fprintf(stderr, "remote dump not enabled\n");
 354                 exit(X_STARTUP);
 355 #endif
 356         }
 357         (void)setuid(getuid()); /* rmthost() is the only reason to be setuid */
 358
 359         if (signal(SIGHUP, SIG_IGN) != SIG_IGN)
 360                 signal(SIGHUP, sig);
 361         if (signal(SIGTRAP, SIG_IGN) != SIG_IGN)
 362                 signal(SIGTRAP, sig);
 363         if (signal(SIGFPE, SIG_IGN) != SIG_IGN)
 364                 signal(SIGFPE, sig);
 365         if (signal(SIGBUS, SIG_IGN) != SIG_IGN)
 366                 signal(SIGBUS, sig);
 367         if (signal(SIGSEGV, SIG_IGN) != SIG_IGN)
 368                 signal(SIGSEGV, sig);
 369         if (signal(SIGTERM, SIG_IGN) != SIG_IGN)
 370                 signal(SIGTERM, sig);
 371         if (signal(SIGINT, interrupt) == SIG_IGN)
 372                 signal(SIGINT, SIG_IGN);
 373         set_operators();        /* /etc/group snarfed */
 374         getfstab();             /* /etc/fstab snarfed */
 375
 376         disk = get_device_name(diskparam);
 377         if (!disk) {            /* null means the disk is some form
 378                                    of LABEL= or UID= but it was not
 379                                    found */
 380                 msg("Cannot find a disk having %s\n", diskparam);
 381                 exit(X_STARTUP);
 382         }
 383         /*
 384          *      disk may end in / and this can confuse
 385          *      fstabsearch.
 386          */
 387         if (strlen(disk) > 1 && disk[strlen(disk) - 1] == '/')
 388           disk[strlen(disk) - 1] = '\0';
 389         /*
 390          *      disk can be either the full special file name,
 391          *      the suffix of the special file name,
 392          *      the special name missing the leading '/',
 393          *      the file system name with or without the leading '/'.
 394          */
 395         if ((dt = fstabsearch(disk)) != NULL) {
 396                 disk = rawname(dt->fs_spec);
 397                 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
 398                 (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN);
 399 #ifdef  __linux__
 400         } else {
 401                 /*
 402                  * The argument was not found in the fstab
 403                  * assume that this is a subtree and search for it
 404                  */
 405 #ifdef  HAVE_REALPATH
 406                 if (realpath(disk, pathname) == NULL)
 407 #endif
 408                         strcpy(pathname, disk);
 409                 dt = fstabsearchdir(pathname, directory);
 410                 if (dt != NULL) {
 411                         char name[MAXPATHLEN];
 412                         (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
 413                         (void)snprintf(name, sizeof(name), "%s (dir %s)",
 414                                       dt->fs_file, directory);
 415                         (void)strncpy(spcl.c_filesys, name, NAMELEN);
 416                         disk = rawname(dt->fs_spec);
 417                 } else {
 418                         (void)strncpy(spcl.c_dev, disk, NAMELEN);
 419                         (void)strncpy(spcl.c_filesys, "an unlisted file system",
 420                             NAMELEN);
 421                 }
 422         }
 423 #else
 424         } else {
 425                 (void)strncpy(spcl.c_dev, disk, NAMELEN);
 426                 (void)strncpy(spcl.c_filesys, "an unlisted file system",
 427                     NAMELEN);
 428         }
 429 #endif
 430
 431         if (directory[0] != 0) {
 432                 if (level != '0') {
 433                         (void)fprintf(stderr, "Only level 0 dumps are allowed on a subdirectory\n");
 434                         exit(X_STARTUP);
 435                 }
 436                 if (uflag) {
 437                         (void)fprintf(stderr, "You can't update the dumpdates file when dumping a subdirectory\n");
 438                         exit(X_STARTUP);
 439                 }
 440         }
 441         spcl.c_dev[NAMELEN-1]='\0';
 442         spcl.c_filesys[NAMELEN-1]='\0';
 443         (void)strncpy(spcl.c_label, labelstr, sizeof(spcl.c_label) - 1);
 444         (void)gethostname(spcl.c_host, NAMELEN);
 445         spcl.c_level = level - '0';
 446         spcl.c_type = TS_TAPE;
 447         if (!Tflag)
 448                 getdumptime(uflag);             /* dumpdates snarfed */
 449
 450         if (spcl.c_ddate == 0 && spcl.c_level) {
 451                 msg("WARNING: There is no inferior level dump on this filesystem\n");
 452                 msg("WARNING: Assuming a level 0 dump by default\n");
 453                 level = '0';
 454                 spcl.c_level = 0;
 455         }
 456
 457         if (Mflag)
 458                 snprintf(tape, MAXPATHLEN, "%s%03d", tapeprefix, tapeno + 1);
 459         else
 460                 strncpy(tape, tapeprefix, MAXPATHLEN);
 461         tape[MAXPATHLEN - 1] = '\0';
 462
 463         if (!sizest) {
 464
 465                 msg("Date of this level %c dump: %s", level,
 466 #ifdef  __linux__
 467                         spcl.c_date == 0 ? "the epoch\n" : ctime4(&spcl.c_date));
 468 #else
 469                         spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date));
 470 #endif
 471                 msg("Date of last level %c dump: %s", lastlevel,
 472 #ifdef  __linux__
 473                         spcl.c_ddate == 0 ? "the epoch\n" : ctime4(&spcl.c_ddate));
 474 #else
 475                         spcl.c_ddate == 0 ? "the epoch\n" : ctime(&spcl.c_ddate));
 476 #endif
 477                 msg("Dumping %s (%s) ", disk, spcl.c_filesys);
 478                 if (host)
 479                         msgtail("to %s on host %s\n", tape, host);
 480                 else
 481                         msgtail("to %s\n", tape);
 482                 msg("Label: %s\n", labelstr);
 483
 484         } /* end of size estimate */
 485
 486 #ifdef  __linux__
 487         retval = dump_fs_open(disk, &fs);
 488         if (retval) {
 489                 com_err(disk, retval, "while opening filesystem");
 490                 if (retval == EXT2_ET_REV_TOO_HIGH)
 491                         printf ("Get a newer version of dump!\n");
 492                 exit(X_STARTUP);
 493         }
 494         if (fs->super->s_rev_level > DUMP_CURRENT_REV) {
 495                 com_err(disk, retval, "while opening filesystem");
 496                 printf ("Get a newer version of dump!\n");
 497                 exit(X_STARTUP);
 498         }
 499         if ((diskfd = open(disk, O_RDONLY)) < 0) {
 500                 msg("Cannot open %s\n", disk);
 501                 exit(X_STARTUP);
 502         }
 503         sync();
 504         dev_bsize = DEV_BSIZE;
 505         dev_bshift = ffs(dev_bsize) - 1;
 506         if (dev_bsize != (1 << dev_bshift))
 507                 quit("dev_bsize (%d) is not a power of 2", dev_bsize);
 508         tp_bshift = ffs(TP_BSIZE) - 1;
 509         if (TP_BSIZE != (1 << tp_bshift))
 510                 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
 511         maxino = fs->super->s_inodes_count;
 512 #if     0
 513         spcl.c_flags |= DR_NEWINODEFMT;
 514 #endif
 515 #else   /* __linux __*/
 516         if ((diskfd = open(disk, O_RDONLY)) < 0) {
 517                 msg("Cannot open %s\n", disk);
 518                 exit(X_STARTUP);
 519         }
 520         sync();
 521         sblock = (struct fs *)sblock_buf;
 522         bread(SBOFF, (char *) sblock, SBSIZE);
 523         if (sblock->fs_magic != FS_MAGIC)
 524                 quit("bad sblock magic number\n");
 525         dev_bsize = sblock->fs_fsize / fsbtodb(sblock, 1);
 526         dev_bshift = ffs(dev_bsize) - 1;
 527         if (dev_bsize != (1 << dev_bshift))
 528                 quit("dev_bsize (%d) is not a power of 2", dev_bsize);
 529         tp_bshift = ffs(TP_BSIZE) - 1;
 530         if (TP_BSIZE != (1 << tp_bshift))
 531                 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
 532 #ifdef FS_44INODEFMT
 533         if (sblock->fs_inodefmt >= FS_44INODEFMT)
 534                 spcl.c_flags |= DR_NEWINODEFMT;
 535 #endif
 536         maxino = sblock->fs_ipg * sblock->fs_ncg;
 537 #endif  /* __linux__ */
 538         mapsize = roundup(howmany(maxino, NBBY), TP_BSIZE);
 539         usedinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
 540         dumpdirmap = (char *)calloc((unsigned) mapsize, sizeof(char));
 541         dumpinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
 542         tapesize = 2 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
 543
 544         nonodump = spcl.c_level < honorlevel;
 545
 546 #if defined(SIGINFO)
 547         (void)signal(SIGINFO, statussig);
 548 #endif
 549
 550         if (!sizest)
 551                 msg("mapping (Pass I) [regular files]\n");
 552 #ifdef  __linux__
 553         if (directory[0] == 0)
 554                 anydirskipped = mapfiles(maxino, &tapesize);
 555         else
 556                 anydirskipped = mapfilesfromdir(maxino, &tapesize, directory);
 557 #else
 558         anydirskipped = mapfiles(maxino, &tapesize);
 559 #endif
 560
 561         if (!sizest)
 562                 msg("mapping (Pass II) [directories]\n");
 563         while (anydirskipped) {
 564                 anydirskipped = mapdirs(maxino, &tapesize);
 565         }
 566
 567         if (sizest) {
 568                 printf("%.0f\n", ((double)tapesize + 11) * TP_BSIZE);
 569                 exit(X_FINOK);
 570         } /* stop here for size estimate */
 571
 572         if (pipeout || unlimited) {
 573                 tapesize += 11; /* 10 trailer blocks + 1 map header */
 574                 msg("estimated %ld tape blocks.\n", tapesize);
 575         } else {
 576                 double fetapes;
 577
 578                 if (blocksperfile)
 579                         fetapes = (double) tapesize / blocksperfile;
 580                 else if (cartridge) {
 581                         /* Estimate number of tapes, assuming streaming stops at
 582                            the end of each block written, and not in mid-block.
 583                            Assume no erroneous blocks; this can be compensated
 584                            for with an artificially low tape size. */
 585                         fetapes =
 586                         (         (double) tapesize     /* blocks */
 587                                 * TP_BSIZE      /* bytes/block */
 588                                 * (1.0/density) /* 0.1" / byte " */
 589                           +
 590                                   (double) tapesize     /* blocks */
 591                                 * (1.0/ntrec)   /* streaming-stops per block */
 592                                 * 15.48         /* 0.1" / streaming-stop " */
 593                         ) * (1.0 / tsize );     /* tape / 0.1" " */
 594                 } else {
 595                         /* Estimate number of tapes, for old fashioned 9-track
 596                            tape */
 597                         int tenthsperirg = (density == 625) ? 3 : 7;
 598                         fetapes =
 599                         (         (double) tapesize     /* blocks */
 600                                 * TP_BSIZE      /* bytes / block */
 601                                 * (1.0/density) /* 0.1" / byte " */
 602                           +
 603                                   (double) tapesize     /* blocks */
 604                                 * (1.0/ntrec)   /* IRG's / block */
 605                                 * tenthsperirg  /* 0.1" / IRG " */
 606                         ) * (1.0 / tsize );     /* tape / 0.1" " */
 607                 }
 608                 etapes = fetapes;               /* truncating assignment */
 609                 etapes++;
 610                 /* count the dumped inodes map on each additional tape */
 611                 tapesize += (etapes - 1) *
 612                         (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
 613                 tapesize += etapes + 10;        /* headers + 10 trailer blks */
 614                 msg("estimated %ld tape blocks on %3.2f tape(s).\n",
 615                     tapesize, fetapes);
 616         }
 617
 618         /*
 619          * Allocate tape buffer.
 620          */
 621         if (!alloctape())
 622                 quit(
 623         "can't allocate tape buffers - try a smaller blocking factor.\n");
 624
 625         startnewtape(1);
 626 #ifdef __linux__
 627         (void)time4(&(tstart_writing));
 628 #else
 629         (void)time((time_t *)&(tstart_writing));
 630 #endif
 631         dumpmap(usedinomap, TS_CLRI, maxino - 1);
 632
 633         msg("dumping (Pass III) [directories]\n");
 634         dirty = 0;              /* XXX just to get gcc to shut up */
 635         for (map = dumpdirmap, ino = 1; ino < maxino; ino++) {
 636                 if (((ino - 1) % NBBY) == 0)    /* map is offset by 1 */
 637                         dirty = *map++;
 638                 else
 639                         dirty >>= 1;
 640                 if ((dirty & 1) == 0)
 641                         continue;
 642                 /*
 643                  * Skip directory inodes deleted and maybe reallocated
 644                  */
 645                 dp = getino(ino);
 646                 if ((dp->di_mode & IFMT) != IFDIR)
 647                         continue;
 648 #ifdef  __linux__
 649                 /*
 650                  * Skip directory inodes deleted and not yes reallocated...
 651                  */
 652                 if (dp->di_nlink == 0 || dp->di_dtime != 0)
 653                         continue;
 654                 (void)dumpdirino(dp, ino);
 655 #else
 656                 (void)dumpino(dp, ino);
 657 #endif
 658         }
 659
 660         msg("dumping (Pass IV) [regular files]\n");
 661         for (map = dumpinomap, ino = 1; ino < maxino; ino++) {
 662                 if (((ino - 1) % NBBY) == 0)    /* map is offset by 1 */
 663                         dirty = *map++;
 664                 else
 665                         dirty >>= 1;
 666                 if ((dirty & 1) == 0)
 667                         continue;
 668                 /*
 669                  * Skip inodes deleted and reallocated as directories.
 670                  */
 671                 dp = getino(ino);
 672                 if ((dp->di_mode & IFMT) == IFDIR)
 673                         continue;
 674 #ifdef __linux__
 675                 /*
 676                  * No need to check here for deleted and not yes reallocated inodes
 677                  * since this is done in dumpino().
 678                  */
 679 #endif
 680                 (void)dumpino(dp, ino);
 681         }
 682
 683 #ifdef __linux__
 684         (void)time4(&(tend_writing));
 685 #else
 686         (void)time((time_t *)&(tend_writing));
 687 #endif
 688         spcl.c_type = TS_END;
 689         for (i = 0; i < ntrec; i++)
 690                 writeheader(maxino - 1);
 691
 692         tnow = trewind();
 693
 694         if (pipeout)
 695                 msg("%ld tape blocks (%.2fMB)\n", spcl.c_tapea,
 696                         ((double)spcl.c_tapea * TP_BSIZE / 1048576));
 697         else
 698                 msg("%ld tape blocks (%.2fMB) on %d volume(s)\n",
 699                     spcl.c_tapea,
 700                     ((double)spcl.c_tapea * TP_BSIZE / 1048576),
 701                     spcl.c_volume);
 702
 703         /* report dump performance, avoid division through zero */
 704         if (tend_writing - tstart_writing == 0)
 705                 msg("finished in less than a second\n");
 706         else
 707                 msg("finished in %d seconds, throughput %d KBytes/sec\n",
 708                     tend_writing - tstart_writing,
 709                     spcl.c_tapea / (tend_writing - tstart_writing));
 710
 711         putdumptime();
 712 #ifdef __linux__
 713         msg("Date of this level %c dump: %s", level,
 714                 spcl.c_date == 0 ? "the epoch\n" : ctime4(&spcl.c_date));
 715 #else
 716         msg("Date of this level %c dump: %s", level,
 717                 spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date));
 718 #endif
 719         msg("Date this dump completed:  %s", ctime(&tnow));
 720
 721         msg("Average transfer rate: %ld KB/s\n", xferrate / tapeno);
 722
 723         broadcast("DUMP IS DONE!\7\7\n");
 724         msg("DUMP IS DONE\n");
 725         Exit(X_FINOK);
 726         /* NOTREACHED */
 727         return 0;       /* gcc - shut up */
 728 }
 729
 730 static void
 731 usage(void)
 732 {
 733         char white[MAXPATHLEN];
 734         int i;
 735
 736         strncpy(white, __progname, MAXPATHLEN-1);
 737         white[MAXPATHLEN-1] = '\0';
 738         for (i=0; i<MAXPATHLEN; ++i)
 739                 if (white[i] != '\0') white[i] = ' ';
 740
 741         fprintf(stderr,
 742                 "%s %s\n", __progname, _DUMP_VERSION);
 743         fprintf(stderr,
 744                 "usage:\t%s [-0123456789ac"
 745 #ifdef KERBEROS
 746                 "k"
 747 #endif
 748                 "MnSu] [-B records] [-b blocksize] [-d density]\n"
 749                 "\t%s [-e inode#] [-f file] [-h level] [-s feet] [-T date] filesystem\n"
 750                 "\t%s [-W | -w]\n", __progname, white, __progname);
 751         exit(X_STARTUP);
 752 }
 753
 754 /*
 755  * Pick up a numeric argument.  It must be nonnegative and in the given
 756  * range (except that a vmax of 0 means unlimited).
 757  */
 758 static long
 759 numarg(const char *meaning, long vmin, long vmax)
 760 {
 761         char *p;
 762         long val;
 763
 764         val = strtol(optarg, &p, 10);
 765         if (*p)
 766                 errx(X_STARTUP, "illegal %s -- %s", meaning, optarg);
 767         if (val < vmin || (vmax && val > vmax))
 768                 errx(X_STARTUP, "%s must be between %ld and %ld", meaning, vmin, vmax);
 769         return (val);
 770 }
 771
 772 void
 773 sig(int signo)
 774 {
 775         switch(signo) {
 776         case SIGALRM:
 777         case SIGBUS:
 778         case SIGFPE:
 779         case SIGHUP:
 780         case SIGTERM:
 781         case SIGTRAP:
 782                 if (pipeout)
 783                         quit("Signal on pipe: cannot recover\n");
 784                 msg("Rewriting attempted as response to unknown signal.\n");
 785                 (void)fflush(stderr);
 786                 (void)fflush(stdout);
 787                 close_rewind();
 788                 exit(X_REWRITE);
 789                 /* NOTREACHED */
 790         case SIGSEGV:
 791                 msg("SIGSEGV: ABORTING!\n");
 792                 (void)signal(SIGSEGV, SIG_DFL);
 793                 (void)kill(0, SIGSEGV);
 794                 /* NOTREACHED */
 795         }
 796 }
 797
 798 char *
 799 rawname(char *cp)
 800 {
 801 #ifdef  __linux__
 802         return cp;
 803 #else   /* __linux__ */
 804         static char rawbuf[MAXPATHLEN];
 805         char *dp = strrchr(cp, '/');
 806
 807         if (dp == NULL)
 808                 return (NULL);
 809         *dp = '\0';
 810         (void)strncpy(rawbuf, cp, MAXPATHLEN - 1);
 811         rawbuf[MAXPATHLEN-1] = '\0';
 812         *dp = '/';
 813         (void)strncat(rawbuf, "/r", MAXPATHLEN - 1 - strlen(rawbuf));
 814         (void)strncat(rawbuf, dp + 1, MAXPATHLEN - 1 - strlen(rawbuf));
 815         return (rawbuf);
 816 #endif  /* __linux__ */
 817 }
 818
 819 /*
 820  * obsolete --
 821  *      Change set of key letters and ordered arguments into something
 822  *      getopt(3) will like.
 823  */
 824 static void
 825 obsolete(int *argcp, char **argvp[])
 826 {
 827         int argc, flags;
 828         char *ap, **argv, *flagsp=NULL, **nargv, *p=NULL;
 829
 830         /* Setup. */
 831         argv = *argvp;
 832         argc = *argcp;
 833
 834         /* Return if no arguments or first argument has leading dash. */
 835         ap = argv[1];
 836         if (argc == 1 || *ap == '-')
 837                 return;
 838
 839         /* Allocate space for new arguments. */
 840         if ((*argvp = nargv = malloc((argc + 1) * sizeof(char *))) == NULL ||
 841             (p = flagsp = malloc(strlen(ap) + 2)) == NULL)
 842                 err(X_STARTUP, "malloc new args");
 843
 844         *nargv++ = *argv;
 845         argv += 2;
 846
 847         for (flags = 0; *ap; ++ap) {
 848                 switch (*ap) {
 849                 case 'B':
 850                 case 'b':
 851                 case 'd':
 852                 case 'e':
 853                 case 'f':
 854                 case 'F':
 855                 case 'h':
 856                 case 'L':
 857                 case 's':
 858                 case 'T':
 859                         if (*argv == NULL) {
 860                                 warnx("option requires an argument -- %c", *ap);
 861                                 usage();
 862                         }
 863                         if ((nargv[0] = malloc(strlen(*argv) + 2 + 1)) == NULL)
 864                                 err(X_STARTUP, "malloc arg");
 865                         nargv[0][0] = '-';
 866                         nargv[0][1] = *ap;
 867                         (void)strcpy(&nargv[0][2], *argv);
 868                         ++argv;
 869                         ++nargv;
 870                         break;
 871                 default:
 872                         if (!flags) {
 873                                 *p++ = '-';
 874                                 flags = 1;
 875                         }
 876                         *p++ = *ap;
 877                         break;
 878                 }
 879         }
 880
 881         /* Terminate flags. */
 882         if (flags) {
 883                 *p = '\0';
 884                 *nargv++ = flagsp;
 885         }
 886
 887         /* Copy remaining arguments. */
 888         while ((*nargv++ = *argv++));
 889
 890         /* Update argument count. */
 891         *argcp = nargv - *argvp - 1;
 892 }