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 1.16 2000/02/26 01:35:48 stelian Exp $";
  44 #endif /* not lint */
  45
  46 #include <sys/param.h>
  47 #include <sys/time.h>
  48 #ifdef __linux__
  49 #include <linux/ext2_fs.h>
  50 #include <sys/stat.h>
  51 #include <bsdcompat.h>
  52 #else
  53 #ifdef sunos
  54 #include <sys/vnode.h>
  55
  56 #include <ufs/inode.h>
  57 #include <ufs/fs.h>
  58 #else
  59 #include <ufs/ufs/dinode.h>
  60 #include <ufs/ffs/fs.h>
  61 #endif
  62 #endif
  63
  64 #include <protocols/dumprestore.h>
  65
  66 #include <ctype.h>
  67 #include <compaterr.h>
  68 #include <fcntl.h>
  69 #include <fstab.h>
  70 #include <signal.h>
  71 #include <stdio.h>
  72 #include <stdlib.h>
  73 #include <string.h>
  74 #include <unistd.h>
  75
  76 #ifdef __linux__
  77 #include <ext2fs/ext2fs.h>
  78 #endif
  79
  80 #include "dump.h"
  81 #include "pathnames.h"
  82
  83 #ifndef SBOFF
  84 #define SBOFF (SBLOCK * DEV_BSIZE)
  85 #endif
  86
  87 int     notify = 0;     /* notify operator flag */
  88 int     blockswritten = 0;      /* number of blocks written on current tape */
  89 int     tapeno = 0;     /* current tape number */
  90 int     density = 0;    /* density in bytes/0.1" " <- this is for hilit19 */
  91 int     ntrec = NTREC;  /* # tape blocks in each tape record */
  92 int     cartridge = 0;  /* Assume non-cartridge tape */
  93 int     dokerberos = 0; /* Use Kerberos authentication */
  94 long    dev_bsize = 1;  /* recalculated below */
  95 long    blocksperfile;  /* output blocks per file */
  96 char    *host = NULL;   /* remote host (if any) */
  97 int     sizest = 0;     /* return size estimate only */
  98
  99 #ifdef  __linux__
 100 char    *__progname;
 101 #endif
 102
 103 int     maxbsize = 64*1024;     /* XXX MAXBSIZE from sys/param.h */
 104 static long numarg __P((const char *, long, long));
 105 static void obsolete __P((int *, char **[]));
 106 static void usage __P((void));
 107
 108 ino_t iexclude_list[IEXCLUDE_MAXNUM];   /* the inode exclude list */
 109 int iexclude_num = 0;                   /* number of elements in the list */
 110
 111 int
 112 main(int argc, char *argv[])
 113 {
 114         register ino_t ino;
 115         register int dirty;
 116         register struct dinode *dp;
 117         register struct fstab *dt;
 118         register char *map;
 119         register int ch;
 120         int i, anydirskipped, bflag = 0, Tflag = 0, honorlevel = 1;
 121         ino_t maxino;
 122 #ifdef  __linux__
 123         errcode_t retval;
 124         char directory[NAME_MAX];
 125         char pathname[NAME_MAX];
 126 #endif
 127         time_t tnow;
 128         char labelstr[LBLSIZE];
 129
 130         spcl.c_date = 0;
 131 #ifdef  __linux__
 132         (void)time4(&spcl.c_date);
 133 #else
 134         (void)time((time_t *)&spcl.c_date);
 135 #endif
 136
 137 #ifdef __linux__
 138         __progname = argv[0];
 139         directory[0] = 0;
 140         initialize_ext2_error_table();
 141 #endif
 142
 143         tsize = 0;      /* Default later, based on 'c' option for cart tapes */
 144         if ((tapeprefix = getenv("TAPE")) == NULL)
 145                 tapeprefix = _PATH_DEFTAPE;
 146         dumpdates = _PATH_DUMPDATES;
 147         strcpy(labelstr, "none");       /* XXX safe strcpy. */
 148         if (TP_BSIZE / DEV_BSIZE == 0 || TP_BSIZE % DEV_BSIZE != 0)
 149                 quit("TP_BSIZE must be a multiple of DEV_BSIZE\n");
 150         level = '0';
 151
 152         if (argc < 2)
 153                 usage();
 154
 155         obsolete(&argc, &argv);
 156 #ifdef KERBEROS
 157 #define optstring "0123456789aB:b:cd:e:f:h:kL:Mns:ST:uWw"
 158 #else
 159 #define optstring "0123456789aB:b:cd:e:f:h:L:Mns:ST:uWw"
 160 #endif
 161         while ((ch = getopt(argc, argv, optstring)) != -1)
 162 #undef optstring
 163                 switch (ch) {
 164                 /* dump level */
 165                 case '0': case '1': case '2': case '3': case '4':
 166                 case '5': case '6': case '7': case '8': case '9':
 167                         level = ch;
 168                         break;
 169
 170                 case 'a':               /* `auto-size', Write to EOM. */
 171                         unlimited = 1;
 172                         break;
 173
 174                 case 'B':               /* blocks per output file */
 175                         blocksperfile = numarg("number of blocks per file",
 176                             1L, 0L);
 177                         break;
 178
 179                 case 'b':               /* blocks per tape write */
 180                         ntrec = numarg("number of blocks per write",
 181                             1L, 1000L);
 182                         if (ntrec > maxbsize/1024) {
 183                                 msg("Please choose a blocksize <= %dKB\n",
 184                                         maxbsize/1024);
 185                                 exit(X_STARTUP);
 186                         }
 187                         bflag = 1;
 188                         break;
 189
 190                 case 'c':               /* Tape is cart. not 9-track */
 191                         cartridge = 1;
 192                         break;
 193
 194                 case 'd':               /* density, in bits per inch */
 195                         density = numarg("density", 10L, 327670L) / 10;
 196                         if (density >= 625 && !bflag)
 197                                 ntrec = HIGHDENSITYTREC;
 198                         break;
 199
 200                                         /* 04-Feb-00 ILC */
 201                 case 'e':               /* exclude an inode */
 202                         iexclude_list[iexclude_num++] =
 203                           numarg("inode to exclude",0L,0L);
 204                         msg("Added %d to exclude list\n",
 205                             iexclude_list[iexclude_num-1]);
 206                         break;
 207
 208                 case 'f':               /* output file */
 209                         tapeprefix = optarg;
 210                         break;
 211
 212                 case 'h':
 213                         honorlevel = numarg("honor level", 0L, 10L);
 214                         break;
 215
 216 #ifdef KERBEROS
 217                 case 'k':
 218                         dokerberos = 1;
 219                         break;
 220 #endif
 221
 222                 case 'L':
 223                         /*
 224                          * Note that although there are LBLSIZE characters,
 225                          * the last must be '\0', so the limit on strlen()
 226                          * is really LBLSIZE-1.
 227                          */
 228                         strncpy(labelstr, optarg, LBLSIZE);
 229                         labelstr[LBLSIZE-1] = '\0';
 230                         if (strlen(optarg) > LBLSIZE-1) {
 231                                 msg(
 232                 "WARNING Label `%s' is larger than limit of %d characters.\n",
 233                                     optarg, LBLSIZE-1);
 234                                 msg("WARNING: Using truncated label `%s'.\n",
 235                                     labelstr);
 236                         }
 237                         break;
 238
 239                 case 'M':               /* multi-volume flag */
 240                         Mflag = 1;
 241                         break;
 242
 243                 case 'n':               /* notify operators */
 244                         notify = 1;
 245                         break;
 246
 247                 case 's':               /* tape size, feet */
 248                         tsize = numarg("tape size", 1L, 0L) * 12 * 10;
 249                         break;
 250
 251                 case 'S':
 252                         sizest = 1;     /* return size estimate only */
 253                         break;
 254
 255                 case 'T':               /* time of last dump */
 256                         spcl.c_ddate = unctime(optarg);
 257                         if (spcl.c_ddate < 0) {
 258                                 (void)fprintf(stderr, "bad time \"%s\"\n",
 259                                     optarg);
 260                                 exit(X_STARTUP);
 261                         }
 262                         Tflag = 1;
 263                         lastlevel = '?';
 264                         break;
 265
 266                 case 'u':               /* update dumpdates */
 267                         uflag = 1;
 268                         break;
 269
 270                 case 'W':               /* what to do */
 271                 case 'w':
 272                         lastdump(ch);
 273                         exit(X_FINOK);  /* do nothing else */
 274
 275                 default:
 276                         usage();
 277                 }
 278         argc -= optind;
 279         argv += optind;
 280
 281         if (argc < 1) {
 282                 (void)fprintf(stderr, "Must specify disk or filesystem\n");
 283                 exit(X_STARTUP);
 284         }
 285         disk = *argv++;
 286         argc--;
 287         if (argc >= 1) {
 288                 (void)fprintf(stderr, "Unknown arguments to dump:");
 289                 while (argc--)
 290                         (void)fprintf(stderr, " %s", *argv++);
 291                 (void)fprintf(stderr, "\n");
 292                 exit(X_STARTUP);
 293         }
 294         if (Tflag && uflag) {
 295                 (void)fprintf(stderr,
 296                     "You cannot use the T and u flags together.\n");
 297                 exit(X_STARTUP);
 298         }
 299         if (strcmp(tapeprefix, "-") == 0) {
 300                 pipeout++;
 301                 tapeprefix = "standard output";
 302         }
 303
 304         if (blocksperfile)
 305                 blocksperfile = blocksperfile / ntrec * ntrec; /* round down */
 306         else if (!unlimited) {
 307                 /*
 308                  * Determine how to default tape size and density
 309                  *
 310                  *              density                         tape size
 311                  * 9-track      1600 bpi (160 bytes/.1")        2300 ft.
 312                  * 9-track      6250 bpi (625 bytes/.1")        2300 ft.
 313                  * cartridge    8000 bpi (100 bytes/.1")        1700 ft.
 314                  *                                              (450*4 - slop)
 315                  * hilit19 hits again: "
 316                  */
 317                 if (density == 0)
 318                         density = cartridge ? 100 : 160;
 319                 if (tsize == 0)
 320                         tsize = cartridge ? 1700L*120L : 2300L*120L;
 321         }
 322
 323         if (strchr(tapeprefix, ':')) {
 324                 host = tapeprefix;
 325                 tapeprefix = strchr(host, ':');
 326                 *tapeprefix++ = '\0';
 327 #ifdef RDUMP
 328                 if (index(tapeprefix, '\n')) {
 329                     (void)fprintf(stderr, "invalid characters in tape\n");
 330                     exit(X_STARTUP);
 331                 }
 332                 if (rmthost(host) == 0)
 333                         exit(X_STARTUP);
 334 #else
 335                 (void)fprintf(stderr, "remote dump not enabled\n");
 336                 exit(X_STARTUP);
 337 #endif
 338         }
 339         (void)setuid(getuid()); /* rmthost() is the only reason to be setuid */
 340
 341         if (signal(SIGHUP, SIG_IGN) != SIG_IGN)
 342                 signal(SIGHUP, sig);
 343         if (signal(SIGTRAP, SIG_IGN) != SIG_IGN)
 344                 signal(SIGTRAP, sig);
 345         if (signal(SIGFPE, SIG_IGN) != SIG_IGN)
 346                 signal(SIGFPE, sig);
 347         if (signal(SIGBUS, SIG_IGN) != SIG_IGN)
 348                 signal(SIGBUS, sig);
 349         if (signal(SIGSEGV, SIG_IGN) != SIG_IGN)
 350                 signal(SIGSEGV, sig);
 351         if (signal(SIGTERM, SIG_IGN) != SIG_IGN)
 352                 signal(SIGTERM, sig);
 353         if (signal(SIGINT, interrupt) == SIG_IGN)
 354                 signal(SIGINT, SIG_IGN);
 355         set_operators();        /* /etc/group snarfed */
 356         getfstab();             /* /etc/fstab snarfed */
 357         /*
 358          *      disk may end in / and this can confuse
 359          *      fstabsearch.
 360          */
 361         if (strlen(disk) > 1 && disk[strlen(disk) - 1] == '/')
 362           disk[strlen(disk) - 1] = '\0';
 363         /*
 364          *      disk can be either the full special file name,
 365          *      the suffix of the special file name,
 366          *      the special name missing the leading '/',
 367          *      the file system name with or without the leading '/'.
 368          */
 369         if ((dt = fstabsearch(disk)) != NULL) {
 370                 disk = rawname(dt->fs_spec);
 371                 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
 372                 (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN);
 373 #ifdef  __linux__
 374         } else {
 375                 /*
 376                  * The argument was not found in the fstab
 377                  * assume that this is a subtree and search for it
 378                  */
 379 #ifdef  HAVE_REALPATH
 380                 if (realpath(disk, pathname) == NULL)
 381 #endif
 382                         strcpy(pathname, disk);
 383                 dt = fstabsearchdir(pathname, directory);
 384                 if (dt != NULL) {
 385                         char name[MAXPATHLEN];
 386                         (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
 387                         (void)sprintf(name, "%s (dir %s)",
 388                                       dt->fs_file, directory);
 389                         (void)strncpy(spcl.c_filesys, name, NAMELEN);
 390                         disk = rawname(dt->fs_spec);
 391                 } else {
 392                         (void)strncpy(spcl.c_dev, disk, NAMELEN);
 393                         (void)strncpy(spcl.c_filesys, "an unlisted file system",
 394                             NAMELEN);
 395                 }
 396         }
 397 #else
 398         } else {
 399                 (void)strncpy(spcl.c_dev, disk, NAMELEN);
 400                 (void)strncpy(spcl.c_filesys, "an unlisted file system",
 401                     NAMELEN);
 402         }
 403 #endif
 404         spcl.c_dev[NAMELEN-1]='\0';
 405         spcl.c_filesys[NAMELEN-1]='\0';
 406         (void)strncpy(spcl.c_label, labelstr, sizeof(spcl.c_label) - 1);
 407         (void)gethostname(spcl.c_host, NAMELEN);
 408         spcl.c_level = level - '0';
 409         spcl.c_type = TS_TAPE;
 410         if (!Tflag)
 411                 getdumptime(uflag);             /* dumpdates snarfed */
 412
 413         if (spcl.c_ddate == 0 && spcl.c_level) {
 414                 msg("WARNING: There is no inferior level dump on this filesystem\n");
 415                 msg("WARNING: Assuming a level 0 dump by default\n");
 416                 level = '0';
 417                 spcl.c_level = 0;
 418         }
 419
 420         if (Mflag)
 421                 snprintf(tape, NAME_MAX, "%s%03d", tapeprefix, tapeno + 1);
 422         else
 423                 strncpy(tape, tapeprefix, NAME_MAX);
 424         tape[NAME_MAX - 1] = '\0';
 425
 426         if (!sizest) {
 427
 428                 msg("Date of this level %c dump: %s", level,
 429 #ifdef  __linux__
 430                         spcl.c_date == 0 ? "the epoch\n" : ctime4(&spcl.c_date));
 431 #else
 432                         spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date));
 433 #endif
 434                 msg("Date of last level %c dump: %s", lastlevel,
 435 #ifdef  __linux__
 436                         spcl.c_ddate == 0 ? "the epoch\n" : ctime4(&spcl.c_ddate));
 437 #else
 438                         spcl.c_ddate == 0 ? "the epoch\n" : ctime(&spcl.c_ddate));
 439 #endif
 440                 msg("Dumping %s (%s) ", disk, spcl.c_filesys);
 441                 if (host)
 442                         msgtail("to %s on host %s\n", tape, host);
 443                 else
 444                         msgtail("to %s\n", tape);
 445                 msg("Label: %s\n", labelstr);
 446
 447         } /* end of size estimate */
 448
 449 #ifdef  __linux__
 450         retval = dump_fs_open(disk, &fs);
 451         if (retval) {
 452                 com_err(disk, retval, "while opening filesystem");
 453                 if (retval == EXT2_ET_REV_TOO_HIGH)
 454                         printf ("Get a newer version of dump!\n");
 455                 exit(X_STARTUP);
 456         }
 457         if (fs->super->s_rev_level > DUMP_CURRENT_REV) {
 458                 com_err(disk, retval, "while opening filesystem");
 459                 printf ("Get a newer version of dump!\n");
 460                 exit(X_STARTUP);
 461         }
 462         if ((diskfd = open(disk, O_RDONLY)) < 0) {
 463                 msg("Cannot open %s\n", disk);
 464                 exit(X_STARTUP);
 465         }
 466         sync();
 467         dev_bsize = DEV_BSIZE;
 468         dev_bshift = ffs(dev_bsize) - 1;
 469         if (dev_bsize != (1 << dev_bshift))
 470                 quit("dev_bsize (%d) is not a power of 2", dev_bsize);
 471         tp_bshift = ffs(TP_BSIZE) - 1;
 472         if (TP_BSIZE != (1 << tp_bshift))
 473                 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
 474         maxino = fs->super->s_inodes_count;
 475 #if     0
 476         spcl.c_flags |= DR_NEWINODEFMT;
 477 #endif
 478 #else   /* __linux __*/
 479         if ((diskfd = open(disk, O_RDONLY)) < 0) {
 480                 msg("Cannot open %s\n", disk);
 481                 exit(X_STARTUP);
 482         }
 483         sync();
 484         sblock = (struct fs *)sblock_buf;
 485         bread(SBOFF, (char *) sblock, SBSIZE);
 486         if (sblock->fs_magic != FS_MAGIC)
 487                 quit("bad sblock magic number\n");
 488         dev_bsize = sblock->fs_fsize / fsbtodb(sblock, 1);
 489         dev_bshift = ffs(dev_bsize) - 1;
 490         if (dev_bsize != (1 << dev_bshift))
 491                 quit("dev_bsize (%d) is not a power of 2", dev_bsize);
 492         tp_bshift = ffs(TP_BSIZE) - 1;
 493         if (TP_BSIZE != (1 << tp_bshift))
 494                 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
 495 #ifdef FS_44INODEFMT
 496         if (sblock->fs_inodefmt >= FS_44INODEFMT)
 497                 spcl.c_flags |= DR_NEWINODEFMT;
 498 #endif
 499         maxino = sblock->fs_ipg * sblock->fs_ncg;
 500 #endif  /* __linux__ */
 501         mapsize = roundup(howmany(maxino, NBBY), TP_BSIZE);
 502         usedinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
 503         dumpdirmap = (char *)calloc((unsigned) mapsize, sizeof(char));
 504         dumpinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
 505         tapesize = 3 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
 506
 507         nonodump = spcl.c_level < honorlevel;
 508
 509 #if defined(SIGINFO)
 510         (void)signal(SIGINFO, statussig);
 511 #endif
 512
 513         if (!sizest)
 514                 msg("mapping (Pass I) [regular files]\n");
 515 #ifdef  __linux__
 516         if (directory[0] == 0)
 517                 anydirskipped = mapfiles(maxino, &tapesize);
 518         else
 519                 anydirskipped = mapfilesfromdir(maxino, &tapesize, directory);
 520 #else
 521         anydirskipped = mapfiles(maxino, &tapesize);
 522 #endif
 523
 524         if (!sizest)
 525                 msg("mapping (Pass II) [directories]\n");
 526         while (anydirskipped) {
 527                 anydirskipped = mapdirs(maxino, &tapesize);
 528         }
 529
 530         if (sizest) {
 531                 printf("%.0f\n", ((double)tapesize + 10) * TP_BSIZE);
 532                 exit(X_FINOK);
 533         } /* stop here for size estimate */
 534
 535         if (pipeout || unlimited) {
 536                 tapesize += 10; /* 10 trailer blocks */
 537                 msg("estimated %ld tape blocks.\n", tapesize);
 538         } else {
 539                 double fetapes;
 540
 541                 if (blocksperfile)
 542                         fetapes = (double) tapesize / blocksperfile;
 543                 else if (cartridge) {
 544                         /* Estimate number of tapes, assuming streaming stops at
 545                            the end of each block written, and not in mid-block.
 546                            Assume no erroneous blocks; this can be compensated
 547                            for with an artificially low tape size. */
 548                         fetapes =
 549                         (         (double) tapesize     /* blocks */
 550                                 * TP_BSIZE      /* bytes/block */
 551                                 * (1.0/density) /* 0.1" / byte " */
 552                           +
 553                                   (double) tapesize     /* blocks */
 554                                 * (1.0/ntrec)   /* streaming-stops per block */
 555                                 * 15.48         /* 0.1" / streaming-stop " */
 556                         ) * (1.0 / tsize );     /* tape / 0.1" " */
 557                 } else {
 558                         /* Estimate number of tapes, for old fashioned 9-track
 559                            tape */
 560                         int tenthsperirg = (density == 625) ? 3 : 7;
 561                         fetapes =
 562                         (         (double) tapesize     /* blocks */
 563                                 * TP_BSIZE      /* bytes / block */
 564                                 * (1.0/density) /* 0.1" / byte " */
 565                           +
 566                                   (double) tapesize     /* blocks */
 567                                 * (1.0/ntrec)   /* IRG's / block */
 568                                 * tenthsperirg  /* 0.1" / IRG " */
 569                         ) * (1.0 / tsize );     /* tape / 0.1" " */
 570                 }
 571                 etapes = fetapes;               /* truncating assignment */
 572                 etapes++;
 573                 /* count the dumped inodes map on each additional tape */
 574                 tapesize += (etapes - 1) *
 575                         (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
 576                 tapesize += etapes + 10;        /* headers + 10 trailer blks */
 577                 msg("estimated %ld tape blocks on %3.2f tape(s).\n",
 578                     tapesize, fetapes);
 579         }
 580
 581         /*
 582          * Allocate tape buffer.
 583          */
 584         if (!alloctape())
 585                 quit(
 586         "can't allocate tape buffers - try a smaller blocking factor.\n");
 587
 588         startnewtape(1);
 589 #ifdef __linux__
 590         (void)time4(&(tstart_writing));
 591 #else
 592         (void)time((time_t *)&(tstart_writing));
 593 #endif
 594         dumpmap(usedinomap, TS_CLRI, maxino - 1);
 595
 596         msg("dumping (Pass III) [directories]\n");
 597         dirty = 0;              /* XXX just to get gcc to shut up */
 598         for (map = dumpdirmap, ino = 1; ino < maxino; ino++) {
 599                 if (((ino - 1) % NBBY) == 0)    /* map is offset by 1 */
 600                         dirty = *map++;
 601                 else
 602                         dirty >>= 1;
 603                 if ((dirty & 1) == 0)
 604                         continue;
 605                 /*
 606                  * Skip directory inodes deleted and maybe reallocated
 607                  */
 608                 dp = getino(ino);
 609                 if ((dp->di_mode & IFMT) != IFDIR)
 610                         continue;
 611 #ifdef  __linux__
 612                 /*
 613                  * Skip directory inodes deleted and not yes reallocated...
 614                  */
 615                 if (dp->di_nlink == 0 || dp->di_dtime != 0)
 616                         continue;
 617                 (void)dumpdirino(dp, ino);
 618 #else
 619                 (void)dumpino(dp, ino);
 620 #endif
 621         }
 622
 623         msg("dumping (Pass IV) [regular files]\n");
 624         for (map = dumpinomap, ino = 1; ino < maxino; ino++) {
 625                 if (((ino - 1) % NBBY) == 0)    /* map is offset by 1 */
 626                         dirty = *map++;
 627                 else
 628                         dirty >>= 1;
 629                 if ((dirty & 1) == 0)
 630                         continue;
 631                 /*
 632                  * Skip inodes deleted and reallocated as directories.
 633                  */
 634                 dp = getino(ino);
 635                 if ((dp->di_mode & IFMT) == IFDIR)
 636                         continue;
 637 #ifdef __linux__
 638                 /*
 639                  * No need to check here for deleted and not yes reallocated inodes
 640                  * since this is done in dumpino().
 641                  */
 642 #endif
 643                 (void)dumpino(dp, ino);
 644         }
 645
 646 #ifdef __linux__
 647         (void)time4(&(tend_writing));
 648 #else
 649         (void)time((time_t *)&(tend_writing));
 650 #endif
 651         spcl.c_type = TS_END;
 652         for (i = 0; i < ntrec; i++)
 653                 writeheader(maxino - 1);
 654         if (pipeout)
 655                 msg("DUMP: %ld tape blocks\n", spcl.c_tapea);
 656         else
 657                 msg("DUMP: %ld tape blocks on %d volumes(s)\n",
 658                     spcl.c_tapea, spcl.c_volume);
 659
 660         /* report dump performance, avoid division through zero */
 661         if (tend_writing - tstart_writing == 0)
 662                 msg("finished in less than a second\n");
 663         else
 664                 msg("finished in %d seconds, throughput %d KBytes/sec\n",
 665                     tend_writing - tstart_writing,
 666                     spcl.c_tapea / (tend_writing - tstart_writing));
 667
 668         tnow = do_stats();
 669         putdumptime();
 670 #ifdef __linux__
 671         msg("DUMP: Date of this level %c dump: %s", level,
 672                 spcl.c_date == 0 ? "the epoch\n" : ctime4(&spcl.c_date));
 673 #else
 674         msg("DUMP: Date of this level %c dump: %s", level,
 675                 spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date));
 676 #endif
 677         msg("DUMP: Date this dump completed:  %s", ctime(&tnow));
 678
 679         msg("DUMP: Average transfer rate: %ld KB/s\n", xferrate / tapeno);
 680
 681         trewind();
 682         broadcast("DUMP IS DONE!\7\7\n");
 683         msg("DUMP IS DONE\n");
 684         Exit(X_FINOK);
 685         /* NOTREACHED */
 686         return 0;       /* gcc - shut up */
 687 }
 688
 689 static void
 690 usage(void)
 691 {
 692         char white[MAXPATHLEN];
 693         int i;
 694
 695         strncpy(white, __progname, MAXPATHLEN-1);
 696         white[MAXPATHLEN-1] = '\0';
 697         for (i=0; i<MAXPATHLEN; ++i)
 698                 if (white[i] != '\0') white[i] = ' ';
 699
 700         fprintf(stderr,
 701                 "%s %s\n", __progname, _DUMP_VERSION);
 702         fprintf(stderr,
 703                 "usage:\t%s [-0123456789ac"
 704 #ifdef KERBEROS
 705                 "k"
 706 #endif
 707                 "MnSu] [-B records] [-b blocksize] [-d density]\n"
 708                 "\t%s [-e inode#] [-f file] [-h level] [-s feet] [-T date] filesystem\n"
 709                 "\t%s [-W | -w]\n", __progname, white, __progname);
 710         exit(X_STARTUP);
 711 }
 712
 713 /*
 714  * Pick up a numeric argument.  It must be nonnegative and in the given
 715  * range (except that a vmax of 0 means unlimited).
 716  */
 717 static long
 718 numarg(const char *meaning, long vmin, long vmax)
 719 {
 720         char *p;
 721         long val;
 722
 723         val = strtol(optarg, &p, 10);
 724         if (*p)
 725                 errx(X_STARTUP, "illegal %s -- %s", meaning, optarg);
 726         if (val < vmin || (vmax && val > vmax))
 727                 errx(X_STARTUP, "%s must be between %ld and %ld", meaning, vmin, vmax);
 728         return (val);
 729 }
 730
 731 void
 732 sig(int signo)
 733 {
 734         switch(signo) {
 735         case SIGALRM:
 736         case SIGBUS:
 737         case SIGFPE:
 738         case SIGHUP:
 739         case SIGTERM:
 740         case SIGTRAP:
 741                 if (pipeout)
 742                         quit("Signal on pipe: cannot recover\n");
 743                 msg("Rewriting attempted as response to unknown signal.\n");
 744                 (void)fflush(stderr);
 745                 (void)fflush(stdout);
 746                 close_rewind();
 747                 exit(X_REWRITE);
 748                 /* NOTREACHED */
 749         case SIGSEGV:
 750                 msg("SIGSEGV: ABORTING!\n");
 751                 (void)signal(SIGSEGV, SIG_DFL);
 752                 (void)kill(0, SIGSEGV);
 753                 /* NOTREACHED */
 754         }
 755 }
 756
 757 char *
 758 rawname(char *cp)
 759 {
 760 #ifdef  __linux__
 761         return cp;
 762 #else   /* __linux__ */
 763         static char rawbuf[MAXPATHLEN];
 764         char *dp = strrchr(cp, '/');
 765
 766         if (dp == NULL)
 767                 return (NULL);
 768         *dp = '\0';
 769         (void)strncpy(rawbuf, cp, MAXPATHLEN - 1);
 770         rawbuf[MAXPATHLEN-1] = '\0';
 771         *dp = '/';
 772         (void)strncat(rawbuf, "/r", MAXPATHLEN - 1 - strlen(rawbuf));
 773         (void)strncat(rawbuf, dp + 1, MAXPATHLEN - 1 - strlen(rawbuf));
 774         return (rawbuf);
 775 #endif  /* __linux__ */
 776 }
 777
 778 /*
 779  * obsolete --
 780  *      Change set of key letters and ordered arguments into something
 781  *      getopt(3) will like.
 782  */
 783 static void
 784 obsolete(int *argcp, char **argvp[])
 785 {
 786         int argc, flags;
 787         char *ap, **argv, *flagsp=NULL, **nargv, *p=NULL;
 788
 789         /* Setup. */
 790         argv = *argvp;
 791         argc = *argcp;
 792
 793         /* Return if no arguments or first argument has leading dash. */
 794         ap = argv[1];
 795         if (argc == 1 || *ap == '-')
 796                 return;
 797
 798         /* Allocate space for new arguments. */
 799         if ((*argvp = nargv = malloc((argc + 1) * sizeof(char *))) == NULL ||
 800             (p = flagsp = malloc(strlen(ap) + 2)) == NULL)
 801                 err(X_STARTUP, "malloc new args");
 802
 803         *nargv++ = *argv;
 804         argv += 2;
 805
 806         for (flags = 0; *ap; ++ap) {
 807                 switch (*ap) {
 808                 case 'B':
 809                 case 'b':
 810                 case 'd':
 811                 case 'f':
 812                 case 'h':
 813                 case 's':
 814                 case 'T':
 815                         if (*argv == NULL) {
 816                                 warnx("option requires an argument -- %c", *ap);
 817                                 usage();
 818                         }
 819                         if ((nargv[0] = malloc(strlen(*argv) + 2 + 1)) == NULL)
 820                                 err(X_STARTUP, "malloc arg");
 821                         nargv[0][0] = '-';
 822                         nargv[0][1] = *ap;
 823                         (void)strcpy(&nargv[0][2], *argv);
 824                         ++argv;
 825                         ++nargv;
 826                         break;
 827                 default:
 828                         if (!flags) {
 829                                 *p++ = '-';
 830                                 flags = 1;
 831                         }
 832                         *p++ = *ap;
 833                         break;
 834                 }
 835         }
 836
 837         /* Terminate flags. */
 838         if (flags) {
 839                 *p = '\0';
 840                 *nargv++ = flagsp;
 841         }
 842
 843         /* Copy remaining arguments. */
 844         while ((*nargv++ = *argv++));
 845
 846         /* Update argument count. */
 847         *argcp = nargv - *argvp - 1;
 848 }