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 1.28 2000/11/10 13:52:43 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 *diskparam;
 130
 131         spcl.c_label[0] = '\0';
 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         unlimited = 1;
 147         eot_script = NULL;
 148         if ((tapeprefix = getenv("TAPE")) == NULL)
 149                 tapeprefix = _PATH_DEFTAPE;
 150         dumpdates = _PATH_DUMPDATES;
 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                         unlimited = 0;
 179                         blocksperfile = numarg("number of blocks per file",
 180                             1L, 0L);
 181                         break;
 182
 183                 case 'b':               /* blocks per tape write */
 184                         ntrec = numarg("number of blocks per write",
 185                             1L, 1000L);
 186                         if (ntrec > maxbsize/1024) {
 187                                 msg("Please choose a blocksize <= %dKB\n",
 188                                         maxbsize/1024);
 189                                 exit(X_STARTUP);
 190                         }
 191                         bflag = 1;
 192                         break;
 193
 194                 case 'c':               /* Tape is cart. not 9-track */
 195                         unlimited = 0;
 196                         cartridge = 1;
 197                         break;
 198
 199                 case 'd':               /* density, in bits per inch */
 200                         unlimited = 0;
 201                         density = numarg("density", 10L, 327670L) / 10;
 202                         if (density >= 625 && !bflag)
 203                                 ntrec = HIGHDENSITYTREC;
 204                         break;
 205
 206                                         /* 04-Feb-00 ILC */
 207                 case 'e':               /* exclude an inode */
 208                         if (iexclude_num == IEXCLUDE_MAXNUM) {
 209                                 (void)fprintf(stderr, "Too many -e options\n");
 210                                 exit(X_STARTUP);
 211                         }
 212                         iexclude_list[iexclude_num++] = numarg("inode to exclude",0L,0L);
 213                         if (iexclude_list[iexclude_num-1] <= ROOTINO) {
 214                                 (void)fprintf(stderr, "Cannot exclude inode %ld\n", iexclude_list[iexclude_num-1]);
 215                                 exit(X_STARTUP);
 216                         }
 217                         msg("Added %d to exclude list\n",
 218                             iexclude_list[iexclude_num-1]);
 219                         break;
 220
 221                 case 'f':               /* output file */
 222                         tapeprefix = optarg;
 223                         break;
 224
 225                 case 'F':               /* end of tape script */
 226                         eot_script = optarg;
 227                         break;
 228
 229                 case 'h':
 230                         honorlevel = numarg("honor level", 0L, 10L);
 231                         break;
 232
 233 #ifdef KERBEROS
 234                 case 'k':
 235                         dokerberos = 1;
 236                         break;
 237 #endif
 238
 239                 case 'L':
 240                         /*
 241                          * Note that although there are LBLSIZE characters,
 242                          * the last must be '\0', so the limit on strlen()
 243                          * is really LBLSIZE-1.
 244                          */
 245                         strncpy(spcl.c_label, optarg, LBLSIZE);
 246                         spcl.c_label[LBLSIZE-1] = '\0';
 247                         if (strlen(optarg) > LBLSIZE-1) {
 248                                 msg(
 249                 "WARNING Label `%s' is larger than limit of %d characters.\n",
 250                                     optarg, LBLSIZE-1);
 251                                 msg("WARNING: Using truncated label `%s'.\n",
 252                                     spcl.c_label);
 253                         }
 254                         break;
 255
 256                 case 'M':               /* multi-volume flag */
 257                         Mflag = 1;
 258                         break;
 259
 260                 case 'n':               /* notify operators */
 261                         notify = 1;
 262                         break;
 263
 264                 case 's':               /* tape size, feet */
 265                         unlimited = 0;
 266                         tsize = numarg("tape size", 1L, 0L) * 12 * 10;
 267                         break;
 268
 269                 case 'S':
 270                         sizest = 1;     /* return size estimate only */
 271                         break;
 272
 273                 case 'T':               /* time of last dump */
 274                         spcl.c_ddate = unctime(optarg);
 275                         if (spcl.c_ddate < 0) {
 276                                 (void)fprintf(stderr, "bad time \"%s\"\n",
 277                                     optarg);
 278                                 exit(X_STARTUP);
 279                         }
 280                         Tflag = 1;
 281                         lastlevel = '?';
 282                         break;
 283
 284                 case 'u':               /* update dumpdates */
 285                         uflag = 1;
 286                         break;
 287
 288                 case 'W':               /* what to do */
 289                 case 'w':
 290                         lastdump(ch);
 291                         exit(X_FINOK);  /* do nothing else */
 292
 293                 default:
 294                         usage();
 295                 }
 296         argc -= optind;
 297         argv += optind;
 298
 299         if (argc < 1) {
 300                 (void)fprintf(stderr, "Must specify disk or filesystem\n");
 301                 exit(X_STARTUP);
 302         }
 303         diskparam = *argv++;
 304         if (strlen(diskparam) >= MAXPATHLEN) {
 305                 (void)fprintf(stderr, "Disk or filesystem name too long: %s\n", diskparam);
 306                 exit(X_STARTUP);
 307         }
 308         argc--;
 309         if (argc >= 1) {
 310                 (void)fprintf(stderr, "Unknown arguments to dump:");
 311                 while (argc--)
 312                         (void)fprintf(stderr, " %s", *argv++);
 313                 (void)fprintf(stderr, "\n");
 314                 exit(X_STARTUP);
 315         }
 316         if (Tflag && uflag) {
 317                 (void)fprintf(stderr,
 318                     "You cannot use the T and u flags together.\n");
 319                 exit(X_STARTUP);
 320         }
 321         if (strcmp(tapeprefix, "-") == 0) {
 322                 pipeout++;
 323                 tapeprefix = "standard output";
 324         }
 325
 326         if (blocksperfile)
 327                 blocksperfile = blocksperfile / ntrec * ntrec; /* round down */
 328         else if (!unlimited) {
 329                 /*
 330                  * Determine how to default tape size and density
 331                  *
 332                  *              density                         tape size
 333                  * 9-track      1600 bpi (160 bytes/.1")        2300 ft.
 334                  * 9-track      6250 bpi (625 bytes/.1")        2300 ft.
 335                  * cartridge    8000 bpi (100 bytes/.1")        1700 ft.
 336                  *                                              (450*4 - slop)
 337                  * hilit19 hits again: "
 338                  */
 339                 if (density == 0)
 340                         density = cartridge ? 100 : 160;
 341                 if (tsize == 0)
 342                         tsize = cartridge ? 1700L*120L : 2300L*120L;
 343         }
 344
 345         if (strchr(tapeprefix, ':')) {
 346                 host = tapeprefix;
 347                 tapeprefix = strchr(host, ':');
 348                 *tapeprefix++ = '\0';
 349 #ifdef RDUMP
 350                 if (index(tapeprefix, '\n')) {
 351                     (void)fprintf(stderr, "invalid characters in tape\n");
 352                     exit(X_STARTUP);
 353                 }
 354                 if (rmthost(host) == 0)
 355                         exit(X_STARTUP);
 356 #else
 357                 (void)fprintf(stderr, "remote dump not enabled\n");
 358                 exit(X_STARTUP);
 359 #endif
 360         }
 361         (void)setuid(getuid()); /* rmthost() is the only reason to be setuid */
 362
 363         if (signal(SIGHUP, SIG_IGN) != SIG_IGN)
 364                 signal(SIGHUP, sig);
 365         if (signal(SIGTRAP, SIG_IGN) != SIG_IGN)
 366                 signal(SIGTRAP, sig);
 367         if (signal(SIGFPE, SIG_IGN) != SIG_IGN)
 368                 signal(SIGFPE, sig);
 369         if (signal(SIGBUS, SIG_IGN) != SIG_IGN)
 370                 signal(SIGBUS, sig);
 371         if (signal(SIGSEGV, SIG_IGN) != SIG_IGN)
 372                 signal(SIGSEGV, sig);
 373         if (signal(SIGTERM, SIG_IGN) != SIG_IGN)
 374                 signal(SIGTERM, sig);
 375         if (signal(SIGINT, interrupt) == SIG_IGN)
 376                 signal(SIGINT, SIG_IGN);
 377         set_operators();        /* /etc/group snarfed */
 378         getfstab();             /* /etc/fstab snarfed */
 379
 380         disk = get_device_name(diskparam);
 381         if (!disk) {            /* null means the disk is some form
 382                                    of LABEL= or UID= but it was not
 383                                    found */
 384                 msg("Cannot find a disk having %s\n", diskparam);
 385                 exit(X_STARTUP);
 386         }
 387         /*
 388          *      disk may end in / and this can confuse
 389          *      fstabsearch.
 390          */
 391         if (strlen(disk) > 1 && disk[strlen(disk) - 1] == '/')
 392                 disk[strlen(disk) - 1] = '\0';
 393         /*
 394          *      disk can be either the full special file name,
 395          *      the suffix of the special file name,
 396          *      the special name missing the leading '/',
 397          *      the file system name with or without the leading '/'.
 398          */
 399         if ((dt = fstabsearch(disk)) != NULL) {
 400                 disk = rawname(dt->fs_spec);
 401                 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
 402                 (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN);
 403         } else {
 404 #ifdef  __linux__
 405 #ifdef  HAVE_REALPATH
 406                 if (realpath(disk, pathname) == NULL)
 407 #endif
 408                         strcpy(pathname, disk);
 409                 /*
 410                  * The argument could be now a mountpoint of
 411                  * a filesystem specified in fstab. Search for it.
 412                  */
 413                 if ((dt = fstabsearch(pathname)) != NULL) {
 414                         disk = rawname(dt->fs_spec);
 415                         (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
 416                         (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN);
 417                 } else {
 418                         /*
 419                          * The argument was not found in the fstab
 420                          * assume that this is a subtree and search for it
 421                          */
 422                         dt = fstabsearchdir(pathname, directory);
 423                         if (dt != NULL) {
 424                                 char name[MAXPATHLEN];
 425                                 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
 426                                 (void)snprintf(name, sizeof(name), "%s (dir %s)",
 427                                               dt->fs_file, directory);
 428                                 (void)strncpy(spcl.c_filesys, name, NAMELEN);
 429                                 disk = rawname(dt->fs_spec);
 430                         } else {
 431                                 (void)strncpy(spcl.c_dev, disk, NAMELEN);
 432                                 (void)strncpy(spcl.c_filesys, "an unlisted file system",
 433                                     NAMELEN);
 434                         }
 435                 }
 436 #else
 437                 (void)strncpy(spcl.c_dev, disk, NAMELEN);
 438                 (void)strncpy(spcl.c_filesys, "an unlisted file system",
 439                     NAMELEN);
 440 #endif
 441         }
 442
 443         if (directory[0] != 0) {
 444                 if (level != '0') {
 445                         (void)fprintf(stderr, "Only level 0 dumps are allowed on a subdirectory\n");
 446                         exit(X_STARTUP);
 447                 }
 448                 if (uflag) {
 449                         (void)fprintf(stderr, "You can't update the dumpdates file when dumping a subdirectory\n");
 450                         exit(X_STARTUP);
 451                 }
 452         }
 453         spcl.c_dev[NAMELEN-1] = '\0';
 454         spcl.c_filesys[NAMELEN-1] = '\0';
 455         (void)gethostname(spcl.c_host, NAMELEN);
 456         spcl.c_host[NAMELEN-1] = '\0';
 457         spcl.c_level = level - '0';
 458         spcl.c_type = TS_TAPE;
 459         if (!Tflag)
 460                 getdumptime(uflag);             /* dumpdates snarfed */
 461
 462         if (spcl.c_ddate == 0 && spcl.c_level) {
 463                 msg("WARNING: There is no inferior level dump on this filesystem\n");
 464                 msg("WARNING: Assuming a level 0 dump by default\n");
 465                 level = '0';
 466                 spcl.c_level = 0;
 467         }
 468
 469         if (Mflag)
 470                 snprintf(tape, MAXPATHLEN, "%s%03d", tapeprefix, tapeno + 1);
 471         else
 472                 strncpy(tape, tapeprefix, MAXPATHLEN);
 473         tape[MAXPATHLEN - 1] = '\0';
 474
 475         if (!sizest) {
 476
 477                 msg("Date of this level %c dump: %s", level,
 478 #ifdef  __linux__
 479                         spcl.c_date == 0 ? "the epoch\n" : ctime4(&spcl.c_date));
 480 #else
 481                         spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date));
 482 #endif
 483                 msg("Date of last level %c dump: %s", lastlevel,
 484 #ifdef  __linux__
 485                         spcl.c_ddate == 0 ? "the epoch\n" : ctime4(&spcl.c_ddate));
 486 #else
 487                         spcl.c_ddate == 0 ? "the epoch\n" : ctime(&spcl.c_ddate));
 488 #endif
 489                 msg("Dumping %s (%s) ", disk, spcl.c_filesys);
 490                 if (host)
 491                         msgtail("to %s on host %s\n", tape, host);
 492                 else
 493                         msgtail("to %s\n", tape);
 494         } /* end of size estimate */
 495
 496 #ifdef  __linux__
 497         retval = dump_fs_open(disk, &fs);
 498         if (retval) {
 499                 com_err(disk, retval, "while opening filesystem");
 500                 if (retval == EXT2_ET_REV_TOO_HIGH)
 501                         printf ("Get a newer version of dump!\n");
 502                 exit(X_STARTUP);
 503         }
 504         if (fs->super->s_rev_level > DUMP_CURRENT_REV) {
 505                 com_err(disk, retval, "while opening filesystem");
 506                 printf ("Get a newer version of dump!\n");
 507                 exit(X_STARTUP);
 508         }
 509         if ((diskfd = open(disk, O_RDONLY)) < 0) {
 510                 msg("Cannot open %s\n", disk);
 511                 exit(X_STARTUP);
 512         }
 513         /* if no user label specified, use ext2 filesystem label if available */
 514         if (spcl.c_label[0] == '\0') {
 515                 if (fs->super->s_volume_name[0] != '\0') {
 516                         strncpy(spcl.c_label, fs->super->s_volume_name,LBLSIZE);
 517                         spcl.c_label[LBLSIZE-1] = '\0';
 518                 }
 519                 else
 520                         strcpy(spcl.c_label, "none");   /* safe strcpy. */
 521         }
 522         sync();
 523         dev_bsize = DEV_BSIZE;
 524         dev_bshift = ffs(dev_bsize) - 1;
 525         if (dev_bsize != (1 << dev_bshift))
 526                 quit("dev_bsize (%d) is not a power of 2", dev_bsize);
 527         tp_bshift = ffs(TP_BSIZE) - 1;
 528         if (TP_BSIZE != (1 << tp_bshift))
 529                 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
 530         maxino = fs->super->s_inodes_count;
 531 #if     0
 532         spcl.c_flags |= DR_NEWINODEFMT;
 533 #endif
 534 #else   /* __linux __*/
 535         if ((diskfd = open(disk, O_RDONLY)) < 0) {
 536                 msg("Cannot open %s\n", disk);
 537                 exit(X_STARTUP);
 538         }
 539         sync();
 540         sblock = (struct fs *)sblock_buf;
 541         bread(SBOFF, (char *) sblock, SBSIZE);
 542         if (sblock->fs_magic != FS_MAGIC)
 543                 quit("bad sblock magic number\n");
 544         dev_bsize = sblock->fs_fsize / fsbtodb(sblock, 1);
 545         dev_bshift = ffs(dev_bsize) - 1;
 546         if (dev_bsize != (1 << dev_bshift))
 547                 quit("dev_bsize (%d) is not a power of 2", dev_bsize);
 548         tp_bshift = ffs(TP_BSIZE) - 1;
 549         if (TP_BSIZE != (1 << tp_bshift))
 550                 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
 551 #ifdef FS_44INODEFMT
 552         if (sblock->fs_inodefmt >= FS_44INODEFMT)
 553                 spcl.c_flags |= DR_NEWINODEFMT;
 554 #endif
 555         maxino = sblock->fs_ipg * sblock->fs_ncg;
 556 #endif  /* __linux__ */
 557         mapsize = roundup(howmany(maxino, NBBY), TP_BSIZE);
 558         usedinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
 559         dumpdirmap = (char *)calloc((unsigned) mapsize, sizeof(char));
 560         dumpinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
 561         if (usedinomap == NULL || dumpdirmap == NULL || dumpinomap == NULL)
 562                 quit("out of memory allocating inode maps\n");
 563         tapesize = 2 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
 564
 565         nonodump = spcl.c_level < honorlevel;
 566
 567         msg("Label: %s\n", spcl.c_label);
 568
 569 #if defined(SIGINFO)
 570         (void)signal(SIGINFO, statussig);
 571 #endif
 572
 573         if (!sizest)
 574                 msg("mapping (Pass I) [regular files]\n");
 575 #ifdef  __linux__
 576         if (directory[0] == 0)
 577                 anydirskipped = mapfiles(maxino, &tapesize);
 578         else
 579                 anydirskipped = mapfilesfromdir(maxino, &tapesize, directory);
 580 #else
 581         anydirskipped = mapfiles(maxino, &tapesize);
 582 #endif
 583
 584         if (!sizest)
 585                 msg("mapping (Pass II) [directories]\n");
 586         while (anydirskipped) {
 587                 anydirskipped = mapdirs(maxino, &tapesize);
 588         }
 589
 590         if (sizest) {
 591                 printf("%.0f\n", ((double)tapesize + 11) * TP_BSIZE);
 592                 exit(X_FINOK);
 593         } /* stop here for size estimate */
 594
 595         if (pipeout || unlimited) {
 596                 tapesize += 11; /* 10 trailer blocks + 1 map header */
 597                 msg("estimated %ld tape blocks.\n", tapesize);
 598         } else {
 599                 double fetapes;
 600
 601                 if (blocksperfile)
 602                         fetapes = (double) tapesize / blocksperfile;
 603                 else if (cartridge) {
 604                         /* Estimate number of tapes, assuming streaming stops at
 605                            the end of each block written, and not in mid-block.
 606                            Assume no erroneous blocks; this can be compensated
 607                            for with an artificially low tape size. */
 608                         fetapes =
 609                         (         (double) tapesize     /* blocks */
 610                                 * TP_BSIZE      /* bytes/block */
 611                                 * (1.0/density) /* 0.1" / byte " */
 612                           +
 613                                   (double) tapesize     /* blocks */
 614                                 * (1.0/ntrec)   /* streaming-stops per block */
 615                                 * 15.48         /* 0.1" / streaming-stop " */
 616                         ) * (1.0 / tsize );     /* tape / 0.1" " */
 617                 } else {
 618                         /* Estimate number of tapes, for old fashioned 9-track
 619                            tape */
 620                         int tenthsperirg = (density == 625) ? 3 : 7;
 621                         fetapes =
 622                         (         (double) tapesize     /* blocks */
 623                                 * TP_BSIZE      /* bytes / block */
 624                                 * (1.0/density) /* 0.1" / byte " */
 625                           +
 626                                   (double) tapesize     /* blocks */
 627                                 * (1.0/ntrec)   /* IRG's / block */
 628                                 * tenthsperirg  /* 0.1" / IRG " */
 629                         ) * (1.0 / tsize );     /* tape / 0.1" " */
 630                 }
 631                 etapes = fetapes;               /* truncating assignment */
 632                 etapes++;
 633                 /* count the dumped inodes map on each additional tape */
 634                 tapesize += (etapes - 1) *
 635                         (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
 636                 tapesize += etapes + 10;        /* headers + 10 trailer blks */
 637                 msg("estimated %ld tape blocks on %3.2f tape(s).\n",
 638                     tapesize, fetapes);
 639         }
 640
 641         /*
 642          * Allocate tape buffer.
 643          */
 644         if (!alloctape())
 645                 quit(
 646         "can't allocate tape buffers - try a smaller blocking factor.\n");
 647
 648         startnewtape(1);
 649 #ifdef __linux__
 650         (void)time4(&(tstart_writing));
 651 #else
 652         (void)time((time_t *)&(tstart_writing));
 653 #endif
 654         dumpmap(usedinomap, TS_CLRI, maxino - 1);
 655
 656         msg("dumping (Pass III) [directories]\n");
 657         dirty = 0;              /* XXX just to get gcc to shut up */
 658         for (map = dumpdirmap, ino = 1; ino < maxino; ino++) {
 659                 if (((ino - 1) % NBBY) == 0)    /* map is offset by 1 */
 660                         dirty = *map++;
 661                 else
 662                         dirty >>= 1;
 663                 if ((dirty & 1) == 0)
 664                         continue;
 665                 /*
 666                  * Skip directory inodes deleted and maybe reallocated
 667                  */
 668                 dp = getino(ino);
 669                 if ((dp->di_mode & IFMT) != IFDIR)
 670                         continue;
 671 #ifdef  __linux__
 672                 /*
 673                  * Skip directory inodes deleted and not yes reallocated...
 674                  */
 675                 if (dp->di_nlink == 0 || dp->di_dtime != 0)
 676                         continue;
 677                 (void)dumpdirino(dp, ino);
 678 #else
 679                 (void)dumpino(dp, ino);
 680 #endif
 681         }
 682
 683         msg("dumping (Pass IV) [regular files]\n");
 684         for (map = dumpinomap, ino = 1; ino < maxino; ino++) {
 685                 if (((ino - 1) % NBBY) == 0)    /* map is offset by 1 */
 686                         dirty = *map++;
 687                 else
 688                         dirty >>= 1;
 689                 if ((dirty & 1) == 0)
 690                         continue;
 691                 /*
 692                  * Skip inodes deleted and reallocated as directories.
 693                  */
 694                 dp = getino(ino);
 695                 if ((dp->di_mode & IFMT) == IFDIR)
 696                         continue;
 697 #ifdef __linux__
 698                 /*
 699                  * No need to check here for deleted and not yes reallocated inodes
 700                  * since this is done in dumpino().
 701                  */
 702 #endif
 703                 (void)dumpino(dp, ino);
 704         }
 705
 706 #ifdef __linux__
 707         (void)time4(&(tend_writing));
 708 #else
 709         (void)time((time_t *)&(tend_writing));
 710 #endif
 711         spcl.c_type = TS_END;
 712         for (i = 0; i < ntrec; i++)
 713                 writeheader(maxino - 1);
 714
 715         tnow = trewind();
 716
 717         if (pipeout)
 718                 msg("%ld tape blocks (%.2fMB)\n", spcl.c_tapea,
 719                         ((double)spcl.c_tapea * TP_BSIZE / 1048576));
 720         else
 721                 msg("%ld tape blocks (%.2fMB) on %d volume(s)\n",
 722                     spcl.c_tapea,
 723                     ((double)spcl.c_tapea * TP_BSIZE / 1048576),
 724                     spcl.c_volume);
 725
 726         /* report dump performance, avoid division through zero */
 727         if (tend_writing - tstart_writing == 0)
 728                 msg("finished in less than a second\n");
 729         else
 730                 msg("finished in %d seconds, throughput %d KBytes/sec\n",
 731                     tend_writing - tstart_writing,
 732                     spcl.c_tapea / (tend_writing - tstart_writing));
 733
 734         putdumptime();
 735 #ifdef __linux__
 736         msg("Date of this level %c dump: %s", level,
 737                 spcl.c_date == 0 ? "the epoch\n" : ctime4(&spcl.c_date));
 738 #else
 739         msg("Date of this level %c dump: %s", level,
 740                 spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date));
 741 #endif
 742         msg("Date this dump completed:  %s", ctime(&tnow));
 743
 744         msg("Average transfer rate: %ld KB/s\n", xferrate / tapeno);
 745
 746         broadcast("DUMP IS DONE!\7\7\n");
 747         msg("DUMP IS DONE\n");
 748         Exit(X_FINOK);
 749         /* NOTREACHED */
 750         return 0;       /* gcc - shut up */
 751 }
 752
 753 static void
 754 usage(void)
 755 {
 756         char white[MAXPATHLEN];
 757         int i;
 758
 759         strncpy(white, __progname, MAXPATHLEN-1);
 760         white[MAXPATHLEN-1] = '\0';
 761         for (i=0; i<MAXPATHLEN; ++i)
 762                 if (white[i] != '\0') white[i] = ' ';
 763
 764         fprintf(stderr,
 765                 "%s %s\n", __progname, _DUMP_VERSION);
 766         fprintf(stderr,
 767                 "usage:\t%s [-0123456789ac"
 768 #ifdef KERBEROS
 769                 "k"
 770 #endif
 771                 "MnSu] [-B records] [-b blocksize] [-d density]\n"
 772                 "\t%s [-e inode#] [-f file] [-h level] [-s feet] [-T date] filesystem\n"
 773                 "\t%s [-W | -w]\n", __progname, white, __progname);
 774         exit(X_STARTUP);
 775 }
 776
 777 /*
 778  * Pick up a numeric argument.  It must be nonnegative and in the given
 779  * range (except that a vmax of 0 means unlimited).
 780  */
 781 static long
 782 numarg(const char *meaning, long vmin, long vmax)
 783 {
 784         char *p;
 785         long val;
 786
 787         val = strtol(optarg, &p, 10);
 788         if (*p)
 789                 errx(X_STARTUP, "illegal %s -- %s", meaning, optarg);
 790         if (val < vmin || (vmax && val > vmax))
 791                 errx(X_STARTUP, "%s must be between %ld and %ld", meaning, vmin, vmax);
 792         return (val);
 793 }
 794
 795 void
 796 sig(int signo)
 797 {
 798         switch(signo) {
 799         case SIGALRM:
 800         case SIGBUS:
 801         case SIGFPE:
 802         case SIGHUP:
 803         case SIGTERM:
 804         case SIGTRAP:
 805                 if (pipeout)
 806                         quit("Signal on pipe: cannot recover\n");
 807                 msg("Rewriting attempted as response to unknown signal.\n");
 808                 (void)fflush(stderr);
 809                 (void)fflush(stdout);
 810                 close_rewind();
 811                 exit(X_REWRITE);
 812                 /* NOTREACHED */
 813         case SIGSEGV:
 814                 msg("SIGSEGV: ABORTING!\n");
 815                 (void)signal(SIGSEGV, SIG_DFL);
 816                 (void)kill(0, SIGSEGV);
 817                 /* NOTREACHED */
 818         }
 819 }
 820
 821 char *
 822 rawname(char *cp)
 823 {
 824 #ifdef  __linux__
 825         return cp;
 826 #else   /* __linux__ */
 827         static char rawbuf[MAXPATHLEN];
 828         char *dp = strrchr(cp, '/');
 829
 830         if (dp == NULL)
 831                 return (NULL);
 832         *dp = '\0';
 833         (void)strncpy(rawbuf, cp, MAXPATHLEN - 1);
 834         rawbuf[MAXPATHLEN-1] = '\0';
 835         *dp = '/';
 836         (void)strncat(rawbuf, "/r", MAXPATHLEN - 1 - strlen(rawbuf));
 837         (void)strncat(rawbuf, dp + 1, MAXPATHLEN - 1 - strlen(rawbuf));
 838         return (rawbuf);
 839 #endif  /* __linux__ */
 840 }
 841
 842 /*
 843  * obsolete --
 844  *      Change set of key letters and ordered arguments into something
 845  *      getopt(3) will like.
 846  */
 847 static void
 848 obsolete(int *argcp, char **argvp[])
 849 {
 850         int argc, flags;
 851         char *ap, **argv, *flagsp=NULL, **nargv, *p=NULL;
 852
 853         /* Setup. */
 854         argv = *argvp;
 855         argc = *argcp;
 856
 857         /* Return if no arguments or first argument has leading dash. */
 858         ap = argv[1];
 859         if (argc == 1 || *ap == '-')
 860                 return;
 861
 862         /* Allocate space for new arguments. */
 863         if ((*argvp = nargv = malloc((argc + 1) * sizeof(char *))) == NULL ||
 864             (p = flagsp = malloc(strlen(ap) + 2)) == NULL)
 865                 err(X_STARTUP, "malloc new args");
 866
 867         *nargv++ = *argv;
 868         argv += 2;
 869
 870         for (flags = 0; *ap; ++ap) {
 871                 switch (*ap) {
 872                 case 'B':
 873                 case 'b':
 874                 case 'd':
 875                 case 'e':
 876                 case 'f':
 877                 case 'F':
 878                 case 'h':
 879                 case 'L':
 880                 case 's':
 881                 case 'T':
 882                         if (*argv == NULL) {
 883                                 warnx("option requires an argument -- %c", *ap);
 884                                 usage();
 885                         }
 886                         if ((nargv[0] = malloc(strlen(*argv) + 2 + 1)) == NULL)
 887                                 err(X_STARTUP, "malloc arg");
 888                         nargv[0][0] = '-';
 889                         nargv[0][1] = *ap;
 890                         (void)strcpy(&nargv[0][2], *argv);
 891                         ++argv;
 892                         ++nargv;
 893                         break;
 894                 default:
 895                         if (!flags) {
 896                                 *p++ = '-';
 897                                 flags = 1;
 898                         }
 899                         *p++ = *ap;
 900                         break;
 901                 }
 902         }
 903
 904         /* Terminate flags. */
 905         if (flags) {
 906                 *p = '\0';
 907                 *nargv++ = flagsp;
 908         }
 909
 910         /* Copy remaining arguments. */
 911         while ((*nargv++ = *argv++));
 912
 913         /* Update argument count. */
 914         *argcp = nargv - *argvp - 1;
 915 }