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@noos.fr>, 1999-2000
   6  *      Stelian Pop <pop@noos.fr> - Alcôve <www.alcove.fr>, 2000
   7  */
   8
   9 /*-
  10  * Copyright (c) 1980, 1991, 1993, 1994
  11  *      The Regents of the University of California.  All rights reserved.
  12  *
  13  * Redistribution and use in source and binary forms, with or without
  14  * modification, are permitted provided that the following conditions
  15  * are met:
  16  * 1. Redistributions of source code must retain the above copyright
  17  *    notice, this list of conditions and the following disclaimer.
  18  * 2. Redistributions in binary form must reproduce the above copyright
  19  *    notice, this list of conditions and the following disclaimer in the
  20  *    documentation and/or other materials provided with the distribution.
  21  * 3. All advertising materials mentioning features or use of this software
  22  *    must display the following acknowledgement:
  23  *      This product includes software developed by the University of
  24  *      California, Berkeley and its contributors.
  25  * 4. Neither the name of the University nor the names of its contributors
  26  *    may be used to endorse or promote products derived from this software
  27  *    without specific prior written permission.
  28  *
  29  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  30  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  31  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  32  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  33  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  34  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  35  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  36  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  37  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  38  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  39  * SUCH DAMAGE.
  40  */
  41
  42 #ifndef lint
  43 static const char rcsid[] =
  44         "$Id: main.c,v 1.32 2000/12/21 11:14:54 stelian Exp $";
  45 #endif /* not lint */
  46
  47 #include <config.h>
  48 #include <sys/param.h>
  49 #include <sys/time.h>
  50 #ifdef __linux__
  51 #include <linux/ext2_fs.h>
  52 #include <sys/stat.h>
  53 #include <bsdcompat.h>
  54 #else
  55 #ifdef sunos
  56 #include <sys/vnode.h>
  57
  58 #include <ufs/inode.h>
  59 #include <ufs/fs.h>
  60 #else
  61 #include <ufs/ufs/dinode.h>
  62 #include <ufs/ffs/fs.h>
  63 #endif
  64 #endif
  65
  66 #include <protocols/dumprestore.h>
  67
  68 #include <ctype.h>
  69 #include <compaterr.h>
  70 #include <fcntl.h>
  71 #include <fstab.h>
  72 #include <signal.h>
  73 #include <stdio.h>
  74 #include <stdlib.h>
  75 #include <string.h>
  76 #include <unistd.h>
  77
  78 #ifdef __linux__
  79 #include <ext2fs/ext2fs.h>
  80 #endif
  81
  82 #include "dump.h"
  83 #include "pathnames.h"
  84 #include "bylabel.h"
  85
  86 #ifndef SBOFF
  87 #define SBOFF (SBLOCK * DEV_BSIZE)
  88 #endif
  89
  90 int     notify = 0;     /* notify operator flag */
  91 int     blockswritten = 0;      /* number of blocks written on current tape */
  92 int     tapeno = 0;     /* current tape number */
  93 int     density = 0;    /* density in bytes/0.1" " <- this is for hilit19 */
  94 int     ntrec = NTREC;  /* # tape blocks in each tape record */
  95 int     cartridge = 0;  /* Assume non-cartridge tape */
  96 int     dokerberos = 0; /* Use Kerberos authentication */
  97 long    dev_bsize = 1;  /* recalculated below */
  98 long    blocksperfile;  /* output blocks per file */
  99 char    *host = NULL;   /* remote host (if any) */
 100 int     sizest = 0;     /* return size estimate only */
 101
 102 #ifdef  __linux__
 103 char    *__progname;
 104 #endif
 105
 106 int     maxbsize = 64*1024;     /* XXX MAXBSIZE from sys/param.h */
 107 static long numarg __P((const char *, long, long));
 108 static void obsolete __P((int *, char **[]));
 109 static void usage __P((void));
 110
 111 ino_t iexclude_list[IEXCLUDE_MAXNUM];   /* the inode exclude list */
 112 int iexclude_num = 0;                   /* number of elements in the list */
 113
 114 int
 115 main(int argc, char *argv[])
 116 {
 117         register ino_t ino;
 118         register int dirty;
 119         register struct dinode *dp;
 120         register struct fstab *dt;
 121         register char *map;
 122         register int ch;
 123         int i, anydirskipped, bflag = 0, Tflag = 0, honorlevel = 1;
 124         ino_t maxino;
 125 #ifdef  __linux__
 126         errcode_t retval;
 127         char directory[MAXPATHLEN];
 128         char pathname[MAXPATHLEN];
 129 #endif
 130         time_t tnow;
 131         char *diskparam;
 132
 133         spcl.c_label[0] = '\0';
 134         spcl.c_date = 0;
 135 #ifdef  __linux__
 136         (void)time4(&spcl.c_date);
 137 #else
 138         (void)time((time_t *)&spcl.c_date);
 139 #endif
 140
 141 #ifdef __linux__
 142         __progname = argv[0];
 143         directory[0] = 0;
 144         initialize_ext2_error_table();
 145 #endif
 146
 147         tsize = 0;      /* Default later, based on 'c' option for cart tapes */
 148         unlimited = 1;
 149         eot_script = NULL;
 150         if ((tapeprefix = getenv("TAPE")) == NULL)
 151                 tapeprefix = _PATH_DEFTAPE;
 152         dumpdates = _PATH_DUMPDATES;
 153         if (TP_BSIZE / DEV_BSIZE == 0 || TP_BSIZE % DEV_BSIZE != 0)
 154                 quit("TP_BSIZE must be a multiple of DEV_BSIZE\n");
 155         level = '0';
 156
 157         if (argc < 2)
 158                 usage();
 159
 160         obsolete(&argc, &argv);
 161 #ifdef KERBEROS
 162 #define optstring "0123456789aB:b:cd:e:f:F:h:kL:Mns:ST:uWw"
 163 #else
 164 #define optstring "0123456789aB:b:cd:e:f:F:h:L:Mns:ST:uWw"
 165 #endif
 166         while ((ch = getopt(argc, argv, optstring)) != -1)
 167 #undef optstring
 168                 switch (ch) {
 169                 /* dump level */
 170                 case '0': case '1': case '2': case '3': case '4':
 171                 case '5': case '6': case '7': case '8': case '9':
 172                         level = ch;
 173                         break;
 174
 175                 case 'a':               /* `auto-size', Write to EOM. */
 176                         unlimited = 1;
 177                         break;
 178
 179                 case 'B':               /* blocks per output file */
 180                         unlimited = 0;
 181                         blocksperfile = numarg("number of blocks per file",
 182                             1L, 0L);
 183                         break;
 184
 185                 case 'b':               /* blocks per tape write */
 186                         ntrec = numarg("number of blocks per write",
 187                             1L, 1000L);
 188                         if (ntrec > maxbsize/1024) {
 189                                 msg("Please choose a blocksize <= %dKB\n",
 190                                         maxbsize/1024);
 191                                 exit(X_STARTUP);
 192                         }
 193                         bflag = 1;
 194                         break;
 195
 196                 case 'c':               /* Tape is cart. not 9-track */
 197                         unlimited = 0;
 198                         cartridge = 1;
 199                         break;
 200
 201                 case 'd':               /* density, in bits per inch */
 202                         unlimited = 0;
 203                         density = numarg("density", 10L, 327670L) / 10;
 204                         if (density >= 625 && !bflag)
 205                                 ntrec = HIGHDENSITYTREC;
 206                         break;
 207
 208                                         /* 04-Feb-00 ILC */
 209                 case 'e':               /* exclude an inode */
 210                         if (iexclude_num == IEXCLUDE_MAXNUM) {
 211                                 (void)fprintf(stderr, "Too many -e options\n");
 212                                 exit(X_STARTUP);
 213                         }
 214                         iexclude_list[iexclude_num++] = numarg("inode to exclude",0L,0L);
 215                         if (iexclude_list[iexclude_num-1] <= ROOTINO) {
 216                                 (void)fprintf(stderr, "Cannot exclude inode %ld\n", iexclude_list[iexclude_num-1]);
 217                                 exit(X_STARTUP);
 218                         }
 219                         msg("Added %d to exclude list\n",
 220                             iexclude_list[iexclude_num-1]);
 221                         break;
 222
 223                 case 'f':               /* output file */
 224                         tapeprefix = optarg;
 225                         break;
 226
 227                 case 'F':               /* end of tape script */
 228                         eot_script = optarg;
 229                         break;
 230
 231                 case 'h':
 232                         honorlevel = numarg("honor level", 0L, 10L);
 233                         break;
 234
 235 #ifdef KERBEROS
 236                 case 'k':
 237                         dokerberos = 1;
 238                         break;
 239 #endif
 240
 241                 case 'L':
 242                         /*
 243                          * Note that although there are LBLSIZE characters,
 244                          * the last must be '\0', so the limit on strlen()
 245                          * is really LBLSIZE-1.
 246                          */
 247                         strncpy(spcl.c_label, optarg, LBLSIZE);
 248                         spcl.c_label[LBLSIZE-1] = '\0';
 249                         if (strlen(optarg) > LBLSIZE-1) {
 250                                 msg(
 251                 "WARNING Label `%s' is larger than limit of %d characters.\n",
 252                                     optarg, LBLSIZE-1);
 253                                 msg("WARNING: Using truncated label `%s'.\n",
 254                                     spcl.c_label);
 255                         }
 256                         break;
 257
 258                 case 'M':               /* multi-volume flag */
 259                         Mflag = 1;
 260                         break;
 261
 262                 case 'n':               /* notify operators */
 263                         notify = 1;
 264                         break;
 265
 266                 case 's':               /* tape size, feet */
 267                         unlimited = 0;
 268                         tsize = numarg("tape size", 1L, 0L) * 12 * 10;
 269                         break;
 270
 271                 case 'S':
 272                         sizest = 1;     /* return size estimate only */
 273                         break;
 274
 275                 case 'T':               /* time of last dump */
 276                         spcl.c_ddate = unctime(optarg);
 277                         if (spcl.c_ddate < 0) {
 278                                 (void)fprintf(stderr, "bad time \"%s\"\n",
 279                                     optarg);
 280                                 exit(X_STARTUP);
 281                         }
 282                         Tflag = 1;
 283                         lastlevel = '?';
 284                         break;
 285
 286                 case 'u':               /* update dumpdates */
 287                         uflag = 1;
 288                         break;
 289
 290                 case 'W':               /* what to do */
 291                 case 'w':
 292                         lastdump(ch);
 293                         exit(X_FINOK);  /* do nothing else */
 294
 295                 default:
 296                         usage();
 297                 }
 298         argc -= optind;
 299         argv += optind;
 300
 301         if (argc < 1) {
 302                 (void)fprintf(stderr, "Must specify disk or filesystem\n");
 303                 exit(X_STARTUP);
 304         }
 305         diskparam = *argv++;
 306         if (strlen(diskparam) >= MAXPATHLEN) {
 307                 (void)fprintf(stderr, "Disk or filesystem name too long: %s\n", diskparam);
 308                 exit(X_STARTUP);
 309         }
 310         argc--;
 311         if (argc >= 1) {
 312                 (void)fprintf(stderr, "Unknown arguments to dump:");
 313                 while (argc--)
 314                         (void)fprintf(stderr, " %s", *argv++);
 315                 (void)fprintf(stderr, "\n");
 316                 exit(X_STARTUP);
 317         }
 318         if (Tflag && uflag) {
 319                 (void)fprintf(stderr,
 320                     "You cannot use the T and u flags together.\n");
 321                 exit(X_STARTUP);
 322         }
 323         if (strcmp(tapeprefix, "-") == 0) {
 324                 pipeout++;
 325                 tapeprefix = "standard output";
 326         }
 327
 328         if (blocksperfile)
 329                 blocksperfile = blocksperfile / ntrec * ntrec; /* round down */
 330         else if (!unlimited) {
 331                 /*
 332                  * Determine how to default tape size and density
 333                  *
 334                  *              density                         tape size
 335                  * 9-track      1600 bpi (160 bytes/.1")        2300 ft.
 336                  * 9-track      6250 bpi (625 bytes/.1")        2300 ft.
 337                  * cartridge    8000 bpi (100 bytes/.1")        1700 ft.
 338                  *                                              (450*4 - slop)
 339                  * hilit19 hits again: "
 340                  */
 341                 if (density == 0)
 342                         density = cartridge ? 100 : 160;
 343                 if (tsize == 0)
 344                         tsize = cartridge ? 1700L*120L : 2300L*120L;
 345         }
 346
 347         if (strchr(tapeprefix, ':')) {
 348                 host = tapeprefix;
 349                 tapeprefix = strchr(host, ':');
 350                 *tapeprefix++ = '\0';
 351 #ifdef RDUMP
 352                 if (index(tapeprefix, '\n')) {
 353                     (void)fprintf(stderr, "invalid characters in tape\n");
 354                     exit(X_STARTUP);
 355                 }
 356                 if (rmthost(host) == 0)
 357                         exit(X_STARTUP);
 358 #else
 359                 (void)fprintf(stderr, "remote dump not enabled\n");
 360                 exit(X_STARTUP);
 361 #endif
 362         }
 363         (void)setuid(getuid()); /* rmthost() is the only reason to be setuid */
 364
 365         if (signal(SIGHUP, SIG_IGN) != SIG_IGN)
 366                 signal(SIGHUP, sig);
 367         if (signal(SIGTRAP, SIG_IGN) != SIG_IGN)
 368                 signal(SIGTRAP, sig);
 369         if (signal(SIGFPE, SIG_IGN) != SIG_IGN)
 370                 signal(SIGFPE, sig);
 371         if (signal(SIGBUS, SIG_IGN) != SIG_IGN)
 372                 signal(SIGBUS, sig);
 373         if (signal(SIGSEGV, SIG_IGN) != SIG_IGN)
 374                 signal(SIGSEGV, sig);
 375         if (signal(SIGTERM, SIG_IGN) != SIG_IGN)
 376                 signal(SIGTERM, sig);
 377         if (signal(SIGINT, interrupt) == SIG_IGN)
 378                 signal(SIGINT, SIG_IGN);
 379         set_operators();        /* /etc/group snarfed */
 380         getfstab();             /* /etc/fstab snarfed */
 381
 382         disk = get_device_name(diskparam);
 383         if (!disk) {            /* null means the disk is some form
 384                                    of LABEL= or UID= but it was not
 385                                    found */
 386                 msg("Cannot find a disk having %s\n", diskparam);
 387                 exit(X_STARTUP);
 388         }
 389         /*
 390          *      disk may end in / and this can confuse
 391          *      fstabsearch.
 392          */
 393         if (strlen(disk) > 1 && disk[strlen(disk) - 1] == '/')
 394                 disk[strlen(disk) - 1] = '\0';
 395         /*
 396          *      disk can be either the full special file name,
 397          *      the suffix of the special file name,
 398          *      the special name missing the leading '/',
 399          *      the file system name with or without the leading '/'.
 400          */
 401         if ((dt = fstabsearch(disk)) != NULL) {
 402                 disk = rawname(dt->fs_spec);
 403                 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
 404                 (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN);
 405         } else {
 406 #ifdef  __linux__
 407 #ifdef  HAVE_REALPATH
 408                 if (realpath(disk, pathname) == NULL)
 409 #endif
 410                         strcpy(pathname, disk);
 411                 /*
 412                  * The argument could be now a mountpoint of
 413                  * a filesystem specified in fstab. Search for it.
 414                  */
 415                 if ((dt = fstabsearch(pathname)) != NULL) {
 416                         disk = rawname(dt->fs_spec);
 417                         (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
 418                         (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN);
 419                 } else {
 420                         /*
 421                          * The argument was not found in the fstab
 422                          * assume that this is a subtree and search for it
 423                          */
 424                         dt = fstabsearchdir(pathname, directory);
 425                         if (dt != NULL) {
 426                                 char name[MAXPATHLEN];
 427                                 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
 428                                 (void)snprintf(name, sizeof(name), "%s (dir %s)",
 429                                               dt->fs_file, directory);
 430                                 (void)strncpy(spcl.c_filesys, name, NAMELEN);
 431                                 disk = rawname(dt->fs_spec);
 432                         } else {
 433                                 (void)strncpy(spcl.c_dev, disk, NAMELEN);
 434                                 (void)strncpy(spcl.c_filesys, "an unlisted file system",
 435                                     NAMELEN);
 436                         }
 437                 }
 438 #else
 439                 (void)strncpy(spcl.c_dev, disk, NAMELEN);
 440                 (void)strncpy(spcl.c_filesys, "an unlisted file system",
 441                     NAMELEN);
 442 #endif
 443         }
 444
 445         if (directory[0] != 0) {
 446                 if (level != '0') {
 447                         (void)fprintf(stderr, "Only level 0 dumps are allowed on a subdirectory\n");
 448                         exit(X_STARTUP);
 449                 }
 450                 if (uflag) {
 451                         (void)fprintf(stderr, "You can't update the dumpdates file when dumping a subdirectory\n");
 452                         exit(X_STARTUP);
 453                 }
 454         }
 455         spcl.c_dev[NAMELEN-1] = '\0';
 456         spcl.c_filesys[NAMELEN-1] = '\0';
 457         (void)gethostname(spcl.c_host, NAMELEN);
 458         spcl.c_host[NAMELEN-1] = '\0';
 459         spcl.c_level = level - '0';
 460         spcl.c_type = TS_TAPE;
 461         if (!Tflag)
 462                 getdumptime(uflag);             /* dumpdates snarfed */
 463
 464         if (spcl.c_ddate == 0 && spcl.c_level) {
 465                 msg("WARNING: There is no inferior level dump on this filesystem\n");
 466                 msg("WARNING: Assuming a level 0 dump by default\n");
 467                 level = '0';
 468                 spcl.c_level = 0;
 469         }
 470
 471         if (Mflag)
 472                 snprintf(tape, MAXPATHLEN, "%s%03d", tapeprefix, tapeno + 1);
 473         else
 474                 strncpy(tape, tapeprefix, MAXPATHLEN);
 475         tape[MAXPATHLEN - 1] = '\0';
 476
 477         if (!sizest) {
 478
 479                 msg("Date of this level %c dump: %s", level,
 480 #ifdef  __linux__
 481                         spcl.c_date == 0 ? "the epoch\n" : ctime4(&spcl.c_date));
 482 #else
 483                         spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date));
 484 #endif
 485                 msg("Date of last level %c dump: %s", lastlevel,
 486 #ifdef  __linux__
 487                         spcl.c_ddate == 0 ? "the epoch\n" : ctime4(&spcl.c_ddate));
 488 #else
 489                         spcl.c_ddate == 0 ? "the epoch\n" : ctime(&spcl.c_ddate));
 490 #endif
 491                 msg("Dumping %s (%s) ", disk, spcl.c_filesys);
 492                 if (host)
 493                         msgtail("to %s on host %s\n", tape, host);
 494                 else
 495                         msgtail("to %s\n", tape);
 496         } /* end of size estimate */
 497
 498 #ifdef  __linux__
 499         retval = dump_fs_open(disk, &fs);
 500         if (retval) {
 501                 com_err(disk, retval, "while opening filesystem");
 502                 if (retval == EXT2_ET_REV_TOO_HIGH)
 503                         printf ("Get a newer version of dump!\n");
 504                 exit(X_STARTUP);
 505         }
 506         if (fs->super->s_rev_level > DUMP_CURRENT_REV) {
 507                 com_err(disk, retval, "while opening filesystem");
 508                 printf ("Get a newer version of dump!\n");
 509                 exit(X_STARTUP);
 510         }
 511         if ((diskfd = open(disk, O_RDONLY)) < 0) {
 512                 msg("Cannot open %s\n", disk);
 513                 exit(X_STARTUP);
 514         }
 515         /* if no user label specified, use ext2 filesystem label if available */
 516         if (spcl.c_label[0] == '\0') {
 517                 const char *lbl;
 518                 if ( (lbl = get_device_label(disk)) != NULL) {
 519                         strncpy(spcl.c_label, lbl, LBLSIZE);
 520                         spcl.c_label[LBLSIZE-1] = '\0';
 521                 }
 522                 else
 523                         strcpy(spcl.c_label, "none");   /* safe strcpy. */
 524         }
 525         sync();
 526         dev_bsize = DEV_BSIZE;
 527         dev_bshift = ffs(dev_bsize) - 1;
 528         if (dev_bsize != (1 << dev_bshift))
 529                 quit("dev_bsize (%d) is not a power of 2", dev_bsize);
 530         tp_bshift = ffs(TP_BSIZE) - 1;
 531         if (TP_BSIZE != (1 << tp_bshift))
 532                 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
 533         maxino = fs->super->s_inodes_count;
 534 #if     0
 535         spcl.c_flags |= DR_NEWINODEFMT;
 536 #endif
 537 #else   /* __linux __*/
 538         if ((diskfd = open(disk, O_RDONLY)) < 0) {
 539                 msg("Cannot open %s\n", disk);
 540                 exit(X_STARTUP);
 541         }
 542         sync();
 543         sblock = (struct fs *)sblock_buf;
 544         bread(SBOFF, (char *) sblock, SBSIZE);
 545         if (sblock->fs_magic != FS_MAGIC)
 546                 quit("bad sblock magic number\n");
 547         dev_bsize = sblock->fs_fsize / fsbtodb(sblock, 1);
 548         dev_bshift = ffs(dev_bsize) - 1;
 549         if (dev_bsize != (1 << dev_bshift))
 550                 quit("dev_bsize (%d) is not a power of 2", dev_bsize);
 551         tp_bshift = ffs(TP_BSIZE) - 1;
 552         if (TP_BSIZE != (1 << tp_bshift))
 553                 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
 554 #ifdef FS_44INODEFMT
 555         if (sblock->fs_inodefmt >= FS_44INODEFMT)
 556                 spcl.c_flags |= DR_NEWINODEFMT;
 557 #endif
 558         maxino = sblock->fs_ipg * sblock->fs_ncg;
 559 #endif  /* __linux__ */
 560         mapsize = roundup(howmany(maxino, NBBY), TP_BSIZE);
 561         usedinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
 562         dumpdirmap = (char *)calloc((unsigned) mapsize, sizeof(char));
 563         dumpinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
 564         if (usedinomap == NULL || dumpdirmap == NULL || dumpinomap == NULL)
 565                 quit("out of memory allocating inode maps\n");
 566         tapesize = 2 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
 567
 568         nonodump = spcl.c_level < honorlevel;
 569
 570         msg("Label: %s\n", spcl.c_label);
 571
 572 #if defined(SIGINFO)
 573         (void)signal(SIGINFO, statussig);
 574 #endif
 575
 576         if (!sizest)
 577                 msg("mapping (Pass I) [regular files]\n");
 578 #ifdef  __linux__
 579         if (directory[0] == 0)
 580                 anydirskipped = mapfiles(maxino, &tapesize);
 581         else
 582                 anydirskipped = mapfilesfromdir(maxino, &tapesize, directory);
 583 #else
 584         anydirskipped = mapfiles(maxino, &tapesize);
 585 #endif
 586
 587         if (!sizest)
 588                 msg("mapping (Pass II) [directories]\n");
 589         while (anydirskipped) {
 590                 anydirskipped = mapdirs(maxino, &tapesize);
 591         }
 592
 593         if (sizest) {
 594                 printf("%.0f\n", ((double)tapesize + 11) * TP_BSIZE);
 595                 exit(X_FINOK);
 596         } /* stop here for size estimate */
 597
 598         if (pipeout || unlimited) {
 599                 tapesize += 11; /* 10 trailer blocks + 1 map header */
 600                 msg("estimated %ld tape blocks.\n", tapesize);
 601         } else {
 602                 double fetapes;
 603
 604                 if (blocksperfile)
 605                         fetapes = (double) tapesize / blocksperfile;
 606                 else if (cartridge) {
 607                         /* Estimate number of tapes, assuming streaming stops at
 608                            the end of each block written, and not in mid-block.
 609                            Assume no erroneous blocks; this can be compensated
 610                            for with an artificially low tape size. */
 611                         fetapes =
 612                         (         (double) tapesize     /* blocks */
 613                                 * TP_BSIZE      /* bytes/block */
 614                                 * (1.0/density) /* 0.1" / byte " */
 615                           +
 616                                   (double) tapesize     /* blocks */
 617                                 * (1.0/ntrec)   /* streaming-stops per block */
 618                                 * 15.48         /* 0.1" / streaming-stop " */
 619                         ) * (1.0 / tsize );     /* tape / 0.1" " */
 620                 } else {
 621                         /* Estimate number of tapes, for old fashioned 9-track
 622                            tape */
 623                         int tenthsperirg = (density == 625) ? 3 : 7;
 624                         fetapes =
 625                         (         (double) tapesize     /* blocks */
 626                                 * TP_BSIZE      /* bytes / block */
 627                                 * (1.0/density) /* 0.1" / byte " */
 628                           +
 629                                   (double) tapesize     /* blocks */
 630                                 * (1.0/ntrec)   /* IRG's / block */
 631                                 * tenthsperirg  /* 0.1" / IRG " */
 632                         ) * (1.0 / tsize );     /* tape / 0.1" " */
 633                 }
 634                 etapes = fetapes;               /* truncating assignment */
 635                 etapes++;
 636                 /* count the dumped inodes map on each additional tape */
 637                 tapesize += (etapes - 1) *
 638                         (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
 639                 tapesize += etapes + 10;        /* headers + 10 trailer blks */
 640                 msg("estimated %ld tape blocks on %3.2f tape(s).\n",
 641                     tapesize, fetapes);
 642         }
 643
 644         /*
 645          * Allocate tape buffer.
 646          */
 647         if (!alloctape())
 648                 quit(
 649         "can't allocate tape buffers - try a smaller blocking factor.\n");
 650
 651         startnewtape(1);
 652 #ifdef __linux__
 653         (void)time4(&(tstart_writing));
 654 #else
 655         (void)time((time_t *)&(tstart_writing));
 656 #endif
 657         dumpmap(usedinomap, TS_CLRI, maxino - 1);
 658
 659         msg("dumping (Pass III) [directories]\n");
 660         dirty = 0;              /* XXX just to get gcc to shut up */
 661         for (map = dumpdirmap, 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 directory inodes deleted and maybe reallocated
 670                  */
 671                 dp = getino(ino);
 672                 if ((dp->di_mode & IFMT) != IFDIR)
 673                         continue;
 674 #ifdef  __linux__
 675                 /*
 676                  * Skip directory inodes deleted and not yes reallocated...
 677                  */
 678                 if (dp->di_nlink == 0 || dp->di_dtime != 0)
 679                         continue;
 680                 (void)dumpdirino(dp, ino);
 681 #else
 682                 (void)dumpino(dp, ino);
 683 #endif
 684         }
 685
 686         msg("dumping (Pass IV) [regular files]\n");
 687         for (map = dumpinomap, ino = 1; ino < maxino; ino++) {
 688                 if (((ino - 1) % NBBY) == 0)    /* map is offset by 1 */
 689                         dirty = *map++;
 690                 else
 691                         dirty >>= 1;
 692                 if ((dirty & 1) == 0)
 693                         continue;
 694                 /*
 695                  * Skip inodes deleted and reallocated as directories.
 696                  */
 697                 dp = getino(ino);
 698                 if ((dp->di_mode & IFMT) == IFDIR)
 699                         continue;
 700 #ifdef __linux__
 701                 /*
 702                  * No need to check here for deleted and not yes reallocated inodes
 703                  * since this is done in dumpino().
 704                  */
 705 #endif
 706                 (void)dumpino(dp, ino);
 707         }
 708
 709 #ifdef __linux__
 710         (void)time4(&(tend_writing));
 711 #else
 712         (void)time((time_t *)&(tend_writing));
 713 #endif
 714         spcl.c_type = TS_END;
 715         for (i = 0; i < ntrec; i++)
 716                 writeheader(maxino - 1);
 717
 718         tnow = trewind();
 719
 720         if (pipeout)
 721                 msg("%ld tape blocks (%.2fMB)\n", spcl.c_tapea,
 722                         ((double)spcl.c_tapea * TP_BSIZE / 1048576));
 723         else
 724                 msg("%ld tape blocks (%.2fMB) on %d volume(s)\n",
 725                     spcl.c_tapea,
 726                     ((double)spcl.c_tapea * TP_BSIZE / 1048576),
 727                     spcl.c_volume);
 728
 729         /* report dump performance, avoid division through zero */
 730         if (tend_writing - tstart_writing == 0)
 731                 msg("finished in less than a second\n");
 732         else
 733                 msg("finished in %d seconds, throughput %d KBytes/sec\n",
 734                     tend_writing - tstart_writing,
 735                     spcl.c_tapea / (tend_writing - tstart_writing));
 736
 737         putdumptime();
 738 #ifdef __linux__
 739         msg("Date of this level %c dump: %s", level,
 740                 spcl.c_date == 0 ? "the epoch\n" : ctime4(&spcl.c_date));
 741 #else
 742         msg("Date of this level %c dump: %s", level,
 743                 spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date));
 744 #endif
 745         msg("Date this dump completed:  %s", ctime(&tnow));
 746
 747         msg("Average transfer rate: %ld KB/s\n", xferrate / tapeno);
 748
 749         broadcast("DUMP IS DONE!\7\7\n");
 750         msg("DUMP IS DONE\n");
 751         Exit(X_FINOK);
 752         /* NOTREACHED */
 753         return 0;       /* gcc - shut up */
 754 }
 755
 756 static void
 757 usage(void)
 758 {
 759         char white[MAXPATHLEN];
 760         int i;
 761
 762         strncpy(white, __progname, MAXPATHLEN-1);
 763         white[MAXPATHLEN-1] = '\0';
 764         for (i=0; i<MAXPATHLEN; ++i)
 765                 if (white[i] != '\0') white[i] = ' ';
 766
 767         fprintf(stderr,
 768                 "%s %s\n", __progname, _DUMP_VERSION);
 769         fprintf(stderr,
 770                 "usage:\t%s [-0123456789ac"
 771 #ifdef KERBEROS
 772                 "k"
 773 #endif
 774                 "MnSu] [-B records] [-b blocksize] [-d density]\n"
 775                 "\t%s [-e inode#] [-f file] [-h level] [-s feet] [-T date] filesystem\n"
 776                 "\t%s [-W | -w]\n", __progname, white, __progname);
 777         exit(X_STARTUP);
 778 }
 779
 780 /*
 781  * Pick up a numeric argument.  It must be nonnegative and in the given
 782  * range (except that a vmax of 0 means unlimited).
 783  */
 784 static long
 785 numarg(const char *meaning, long vmin, long vmax)
 786 {
 787         char *p;
 788         long val;
 789
 790         val = strtol(optarg, &p, 10);
 791         if (*p)
 792                 errx(X_STARTUP, "illegal %s -- %s", meaning, optarg);
 793         if (val < vmin || (vmax && val > vmax))
 794                 errx(X_STARTUP, "%s must be between %ld and %ld", meaning, vmin, vmax);
 795         return (val);
 796 }
 797
 798 void
 799 sig(int signo)
 800 {
 801         switch(signo) {
 802         case SIGALRM:
 803         case SIGBUS:
 804         case SIGFPE:
 805         case SIGHUP:
 806         case SIGTERM:
 807         case SIGTRAP:
 808                 if (pipeout)
 809                         quit("Signal on pipe: cannot recover\n");
 810                 msg("Rewriting attempted as response to unknown signal.\n");
 811                 (void)fflush(stderr);
 812                 (void)fflush(stdout);
 813                 close_rewind();
 814                 exit(X_REWRITE);
 815                 /* NOTREACHED */
 816         case SIGSEGV:
 817                 msg("SIGSEGV: ABORTING!\n");
 818                 (void)signal(SIGSEGV, SIG_DFL);
 819                 (void)kill(0, SIGSEGV);
 820                 /* NOTREACHED */
 821         }
 822 }
 823
 824 char *
 825 rawname(char *cp)
 826 {
 827 #ifdef  __linux__
 828         return cp;
 829 #else   /* __linux__ */
 830         static char rawbuf[MAXPATHLEN];
 831         char *dp = strrchr(cp, '/');
 832
 833         if (dp == NULL)
 834                 return (NULL);
 835         *dp = '\0';
 836         (void)strncpy(rawbuf, cp, MAXPATHLEN - 1);
 837         rawbuf[MAXPATHLEN-1] = '\0';
 838         *dp = '/';
 839         (void)strncat(rawbuf, "/r", MAXPATHLEN - 1 - strlen(rawbuf));
 840         (void)strncat(rawbuf, dp + 1, MAXPATHLEN - 1 - strlen(rawbuf));
 841         return (rawbuf);
 842 #endif  /* __linux__ */
 843 }
 844
 845 /*
 846  * obsolete --
 847  *      Change set of key letters and ordered arguments into something
 848  *      getopt(3) will like.
 849  */
 850 static void
 851 obsolete(int *argcp, char **argvp[])
 852 {
 853         int argc, flags;
 854         char *ap, **argv, *flagsp=NULL, **nargv, *p=NULL;
 855
 856         /* Setup. */
 857         argv = *argvp;
 858         argc = *argcp;
 859
 860         /* Return if no arguments or first argument has leading dash. */
 861         ap = argv[1];
 862         if (argc == 1 || *ap == '-')
 863                 return;
 864
 865         /* Allocate space for new arguments. */
 866         if ((*argvp = nargv = malloc((argc + 1) * sizeof(char *))) == NULL ||
 867             (p = flagsp = malloc(strlen(ap) + 2)) == NULL)
 868                 err(X_STARTUP, "malloc new args");
 869
 870         *nargv++ = *argv;
 871         argv += 2;
 872
 873         for (flags = 0; *ap; ++ap) {
 874                 switch (*ap) {
 875                 case 'B':
 876                 case 'b':
 877                 case 'd':
 878                 case 'e':
 879                 case 'f':
 880                 case 'F':
 881                 case 'h':
 882                 case 'L':
 883                 case 's':
 884                 case 'T':
 885                         if (*argv == NULL) {
 886                                 warnx("option requires an argument -- %c", *ap);
 887                                 usage();
 888                         }
 889                         if ((nargv[0] = malloc(strlen(*argv) + 2 + 1)) == NULL)
 890                                 err(X_STARTUP, "malloc arg");
 891                         nargv[0][0] = '-';
 892                         nargv[0][1] = *ap;
 893                         (void)strcpy(&nargv[0][2], *argv);
 894                         ++argv;
 895                         ++nargv;
 896                         break;
 897                 default:
 898                         if (!flags) {
 899                                 *p++ = '-';
 900                                 flags = 1;
 901                         }
 902                         *p++ = *ap;
 903                         break;
 904                 }
 905         }
 906
 907         /* Terminate flags. */
 908         if (flags) {
 909                 *p = '\0';
 910                 *nargv++ = flagsp;
 911         }
 912
 913         /* Copy remaining arguments. */
 914         while ((*nargv++ = *argv++));
 915
 916         /* Update argument count. */
 917         *argcp = nargv - *argvp - 1;
 918 }