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
   6  *
   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 copyright[] =
  44 "@(#) Copyright (c) 1980, 1991, 1993, 1994\n\
  45         The Regents of the University of California.  All rights reserved.\n";
  46 #endif /* not lint */
  47
  48 #ifndef lint
  49 #if 0
  50 static char sccsid[] = "@(#)main.c      8.6 (Berkeley) 5/1/95";
  51 #endif
  52 static const char rcsid[] =
  53         "$Id: main.c,v 1.2 1999/10/11 12:53:22 stelian Exp $";
  54 #endif /* not lint */
  55
  56 #include <sys/param.h>
  57 #include <sys/time.h>
  58 #ifdef __linux__
  59 #include <linux/ext2_fs.h>
  60 #include <sys/stat.h>
  61 #include <bsdcompat.h>
  62 #else
  63 #ifdef sunos
  64 #include <sys/vnode.h>
  65
  66 #include <ufs/inode.h>
  67 #include <ufs/fs.h>
  68 #else
  69 #include <ufs/ufs/dinode.h>
  70 #include <ufs/ffs/fs.h>
  71 #endif
  72 #endif
  73
  74 #include <protocols/dumprestore.h>
  75
  76 #include <ctype.h>
  77 #include <err.h>
  78 #include <fcntl.h>
  79 #include <fstab.h>
  80 #include <signal.h>
  81 #include <stdio.h>
  82 #include <stdlib.h>
  83 #include <string.h>
  84 #include <unistd.h>
  85
  86 #ifdef __linux__
  87 #include <ext2fs/ext2fs.h>
  88 #endif
  89
  90 #include "dump.h"
  91 #include "pathnames.h"
  92
  93 #ifndef SBOFF
  94 #define SBOFF (SBLOCK * DEV_BSIZE)
  95 #endif
  96
  97 int     notify = 0;     /* notify operator flag */
  98 int     blockswritten = 0;      /* number of blocks written on current tape */
  99 int     tapeno = 0;     /* current tape number */
 100 int     density = 0;    /* density in bytes/0.1" " <- this is for hilit19 */
 101 int     ntrec = NTREC;  /* # tape blocks in each tape record */
 102 int     cartridge = 0;  /* Assume non-cartridge tape */
 103 int     dokerberos = 0; /* Use Kerberos authentication */
 104 long    dev_bsize = 1;  /* recalculated below */
 105 long    blocksperfile;  /* output blocks per file */
 106 char    *host = NULL;   /* remote host (if any) */
 107
 108 #ifdef  __linux__
 109 char    *__progname;
 110 #endif
 111
 112 static long numarg __P((char *, long, long));
 113 static void obsolete __P((int *, char **[]));
 114 static void usage __P((void));
 115
 116 int
 117 main(argc, argv)
 118         int argc;
 119         char *argv[];
 120 {
 121         register ino_t ino;
 122         register int dirty;
 123         register struct dinode *dp;
 124         register struct fstab *dt;
 125         register char *map;
 126         register int ch;
 127         int i, anydirskipped, bflag = 0, Tflag = 0, honorlevel = 1;
 128         ino_t maxino;
 129 #ifdef  __linux__
 130         errcode_t retval;
 131         char directory[NAME_MAX];
 132         char pathname[NAME_MAX];
 133 #endif
 134         char labelstr[LBLSIZE];
 135
 136         spcl.c_date = 0;
 137 #ifdef  __linux__
 138         (void)time4(&spcl.c_date);
 139 #else
 140         (void)time((time_t *)&spcl.c_date);
 141 #endif
 142
 143 #ifdef __linux__
 144         __progname = argv[0];
 145         directory[0] = 0;
 146         initialize_ext2_error_table();
 147 #endif
 148
 149         tsize = 0;      /* Default later, based on 'c' option for cart tapes */
 150         if ((tape = getenv("TAPE")) == NULL)
 151                 tape = _PATH_DEFTAPE;
 152         dumpdates = _PATH_DUMPDATES;
 153         temp = _PATH_DTMP;
 154         strcpy(labelstr, "none");       /* XXX safe strcpy. */
 155         if (TP_BSIZE / DEV_BSIZE == 0 || TP_BSIZE % DEV_BSIZE != 0)
 156                 quit("TP_BSIZE must be a multiple of DEV_BSIZE\n");
 157         level = '0';
 158
 159         if (argc < 2)
 160                 usage();
 161
 162         obsolete(&argc, &argv);
 163 #ifdef KERBEROS
 164 #define optstring "0123456789aB:b:cd:f:h:kL:ns:T:uWw"
 165 #else
 166 #define optstring "0123456789aB:b:cd:f:h:L:ns:T:uWw"
 167 #endif
 168         while ((ch = getopt(argc, argv, optstring)) != -1)
 169 #undef optstring
 170                 switch (ch) {
 171                 /* dump level */
 172                 case '0': case '1': case '2': case '3': case '4':
 173                 case '5': case '6': case '7': case '8': case '9':
 174                         level = ch;
 175                         break;
 176
 177                 case 'a':               /* `auto-size', Write to EOM. */
 178                         unlimited = 1;
 179                         break;
 180
 181                 case 'B':               /* blocks per output file */
 182                         blocksperfile = numarg("number of blocks per file",
 183                             1L, 0L);
 184                         break;
 185
 186                 case 'b':               /* blocks per tape write */
 187                         ntrec = numarg("number of blocks per write",
 188                             1L, 1000L);
 189                         break;
 190
 191                 case 'c':               /* Tape is cart. not 9-track */
 192                         cartridge = 1;
 193                         break;
 194
 195                 case 'd':               /* density, in bits per inch */
 196                         density = numarg("density", 10L, 327670L) / 10;
 197                         if (density >= 625 && !bflag)
 198                                 ntrec = HIGHDENSITYTREC;
 199                         break;
 200
 201                 case 'f':               /* output file */
 202                         tape = optarg;
 203                         break;
 204
 205                 case 'h':
 206                         honorlevel = numarg("honor level", 0L, 10L);
 207                         break;
 208
 209 #ifdef KERBEROS
 210                 case 'k':
 211                         dokerberos = 1;
 212                         break;
 213 #endif
 214
 215                 case 'L':
 216                         /*
 217                          * Note that although there are LBLSIZE characters,
 218                          * the last must be '\0', so the limit on strlen()
 219                          * is really LBLSIZE-1.
 220                          */
 221                         strncpy(labelstr, optarg, LBLSIZE);
 222                         labelstr[LBLSIZE-1] = '\0';
 223                         if (strlen(optarg) > LBLSIZE-1) {
 224                                 msg(
 225                 "WARNING Label `%s' is larger than limit of %d characters.\n",
 226                                     optarg, LBLSIZE-1);
 227                                 msg("WARNING: Using truncated label `%s'.\n",
 228                                     labelstr);
 229                         }
 230                         break;
 231
 232                 case 'n':               /* notify operators */
 233                         notify = 1;
 234                         break;
 235
 236                 case 's':               /* tape size, feet */
 237                         tsize = numarg("tape size", 1L, 0L) * 12 * 10;
 238                         break;
 239
 240                 case 'T':               /* time of last dump */
 241                         spcl.c_ddate = unctime(optarg);
 242                         if (spcl.c_ddate < 0) {
 243                                 (void)fprintf(stderr, "bad time \"%s\"\n",
 244                                     optarg);
 245                                 exit(X_STARTUP);
 246                         }
 247                         Tflag = 1;
 248                         lastlevel = '?';
 249                         argc--;
 250                         argv++;
 251                         break;
 252
 253                 case 'u':               /* update /etc/dumpdates */
 254                         uflag = 1;
 255                         break;
 256
 257                 case 'W':               /* what to do */
 258                 case 'w':
 259                         lastdump(ch);
 260                         exit(X_FINOK);  /* do nothing else */
 261
 262                 default:
 263                         usage();
 264                 }
 265         argc -= optind;
 266         argv += optind;
 267
 268         if (argc < 1) {
 269                 (void)fprintf(stderr, "Must specify disk or filesystem\n");
 270                 exit(X_STARTUP);
 271         }
 272         disk = *argv++;
 273         argc--;
 274         if (argc >= 1) {
 275                 (void)fprintf(stderr, "Unknown arguments to dump:");
 276                 while (argc--)
 277                         (void)fprintf(stderr, " %s", *argv++);
 278                 (void)fprintf(stderr, "\n");
 279                 exit(X_STARTUP);
 280         }
 281         if (Tflag && uflag) {
 282                 (void)fprintf(stderr,
 283                     "You cannot use the T and u flags together.\n");
 284                 exit(X_STARTUP);
 285         }
 286         if (strcmp(tape, "-") == 0) {
 287                 pipeout++;
 288                 tape = "standard output";
 289         }
 290
 291         if (blocksperfile)
 292                 blocksperfile = blocksperfile / ntrec * ntrec; /* round down */
 293         else if (!unlimited) {
 294                 /*
 295                  * Determine how to default tape size and density
 296                  *
 297                  *              density                         tape size
 298                  * 9-track      1600 bpi (160 bytes/.1")        2300 ft.
 299                  * 9-track      6250 bpi (625 bytes/.1")        2300 ft.
 300                  * cartridge    8000 bpi (100 bytes/.1")        1700 ft.
 301                  *                                              (450*4 - slop)
 302                  * hilit19 hits again: "
 303                  */
 304                 if (density == 0)
 305                         density = cartridge ? 100 : 160;
 306                 if (tsize == 0)
 307                         tsize = cartridge ? 1700L*120L : 2300L*120L;
 308         }
 309
 310         if (strchr(tape, ':')) {
 311                 host = tape;
 312                 tape = strchr(host, ':');
 313                 *tape++ = '\0';
 314 #ifdef RDUMP
 315                 if (index(tape, '\n')) {
 316                     (void)fprintf(stderr, "invalid characters in tape\n");
 317                     exit(X_STARTUP);
 318                 }
 319                 if (rmthost(host) == 0)
 320                         exit(X_STARTUP);
 321 #else
 322                 (void)fprintf(stderr, "remote dump not enabled\n");
 323                 exit(X_STARTUP);
 324 #endif
 325         }
 326         (void)setuid(getuid()); /* rmthost() is the only reason to be setuid */
 327
 328         if (signal(SIGHUP, SIG_IGN) != SIG_IGN)
 329                 signal(SIGHUP, sig);
 330         if (signal(SIGTRAP, SIG_IGN) != SIG_IGN)
 331                 signal(SIGTRAP, sig);
 332         if (signal(SIGFPE, SIG_IGN) != SIG_IGN)
 333                 signal(SIGFPE, sig);
 334         if (signal(SIGBUS, SIG_IGN) != SIG_IGN)
 335                 signal(SIGBUS, sig);
 336         if (signal(SIGSEGV, SIG_IGN) != SIG_IGN)
 337                 signal(SIGSEGV, sig);
 338         if (signal(SIGTERM, SIG_IGN) != SIG_IGN)
 339                 signal(SIGTERM, sig);
 340         if (signal(SIGINT, interrupt) == SIG_IGN)
 341                 signal(SIGINT, SIG_IGN);
 342
 343         set_operators();        /* /etc/group snarfed */
 344         getfstab();             /* /etc/fstab snarfed */
 345         /*
 346          *      disk can be either the full special file name,
 347          *      the suffix of the special file name,
 348          *      the special name missing the leading '/',
 349          *      the file system name with or without the leading '/'.
 350          */
 351         dt = fstabsearch(disk);
 352         if (dt != NULL) {
 353                 disk = rawname(dt->fs_spec);
 354                 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
 355                 (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN);
 356 #ifdef  __linux__
 357         } else {
 358                 /*
 359                  * The argument was not found in the fstab
 360                  * assume that this is a subtree and search for it
 361                  */
 362 #ifdef  HAVE_REALPATH
 363                 if (realpath(disk, pathname) == NULL)
 364 #endif
 365                         strcpy(pathname, disk);
 366                 dt = fstabsearchdir(pathname, directory);
 367                 if (dt != NULL) {
 368                         char name[MAXPATHLEN];
 369                         (void)sprintf(name, "%s (dir %s)",
 370                                       dt->fs_spec, directory);
 371                         (void)strncpy(spcl.c_dev, name, NAMELEN);
 372                         (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN);
 373                         disk = rawname(dt->fs_spec);
 374                 } else {
 375                         (void)strncpy(spcl.c_dev, disk, NAMELEN);
 376                         (void)strncpy(spcl.c_filesys, "an unlisted file system",
 377                             NAMELEN);
 378                 }
 379         }
 380 #else
 381         } else {
 382                 (void)strncpy(spcl.c_dev, disk, NAMELEN);
 383                 (void)strncpy(spcl.c_filesys, "an unlisted file system",
 384                     NAMELEN);
 385         }
 386 #endif
 387         spcl.c_dev[NAMELEN-1]='\0';
 388         spcl.c_filesys[NAMELEN-1]='\0';
 389         (void)strncpy(spcl.c_label, labelstr, sizeof(spcl.c_label) - 1);
 390         (void)gethostname(spcl.c_host, NAMELEN);
 391         spcl.c_level = level - '0';
 392         spcl.c_type = TS_TAPE;
 393         if (!Tflag)
 394                 getdumptime();          /* /etc/dumpdates snarfed */
 395
 396         msg("Date of this level %c dump: %s", level,
 397 #ifdef  __linux
 398                 spcl.c_date == 0 ? "the epoch\n" : ctime4(&spcl.c_date));
 399 #else
 400                 spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date));
 401 #endif
 402         msg("Date of last level %c dump: %s", lastlevel,
 403 #ifdef  __linux__
 404                 spcl.c_ddate == 0 ? "the epoch\n" : ctime4(&spcl.c_ddate));
 405 #else
 406                 spcl.c_ddate == 0 ? "the epoch\n" : ctime(&spcl.c_ddate));
 407 #endif
 408         msg("Dumping %s ", disk);
 409         if (dt != NULL)
 410                 msgtail("(%s) ", dt->fs_file);
 411         if (host)
 412                 msgtail("to %s on host %s\n", tape, host);
 413         else
 414                 msgtail("to %s\n", tape);
 415         msg("Label: %s\n", labelstr);
 416
 417 #ifdef  __linux__
 418         retval = ext2fs_open(disk, 0, 0, 0, unix_io_manager, &fs);
 419         if (retval) {
 420                 com_err(disk, retval, "while opening filesystem");
 421                 if (retval == EXT2_ET_REV_TOO_HIGH)
 422                         printf ("Get a newer version of dump!\n");
 423                 exit(X_STARTUP);
 424         }
 425         if (fs->super->s_rev_level > DUMP_CURRENT_REV) {
 426                 com_err(disk, retval, "while opening filesystem");
 427                 printf ("Get a newer version of dump!\n");
 428                 exit(X_STARTUP);
 429         }
 430         if ((diskfd = open(disk, O_RDONLY)) < 0) {
 431                 msg("Cannot open %s\n", disk);
 432                 exit(X_STARTUP);
 433         }
 434         sync();
 435         dev_bsize = DEV_BSIZE;
 436         dev_bshift = ffs(dev_bsize) - 1;
 437         if (dev_bsize != (1 << dev_bshift))
 438                 quit("dev_bsize (%d) is not a power of 2", dev_bsize);
 439         tp_bshift = ffs(TP_BSIZE) - 1;
 440         if (TP_BSIZE != (1 << tp_bshift))
 441                 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
 442         maxino = fs->super->s_inodes_count;
 443 #if     0
 444         spcl.c_flags |= DR_NEWINODEFMT;
 445 #endif
 446 #else   /* __linux __*/
 447         if ((diskfd = open(disk, O_RDONLY)) < 0) {
 448                 msg("Cannot open %s\n", disk);
 449                 exit(X_STARTUP);
 450         }
 451         sync();
 452         sblock = (struct fs *)sblock_buf;
 453         bread(SBOFF, (char *) sblock, SBSIZE);
 454         if (sblock->fs_magic != FS_MAGIC)
 455                 quit("bad sblock magic number\n");
 456         dev_bsize = sblock->fs_fsize / fsbtodb(sblock, 1);
 457         dev_bshift = ffs(dev_bsize) - 1;
 458         if (dev_bsize != (1 << dev_bshift))
 459                 quit("dev_bsize (%d) is not a power of 2", dev_bsize);
 460         tp_bshift = ffs(TP_BSIZE) - 1;
 461         if (TP_BSIZE != (1 << tp_bshift))
 462                 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
 463 #ifdef FS_44INODEFMT
 464         if (sblock->fs_inodefmt >= FS_44INODEFMT)
 465                 spcl.c_flags |= DR_NEWINODEFMT;
 466 #endif
 467         maxino = sblock->fs_ipg * sblock->fs_ncg;
 468 #endif  /* __linux__ */
 469         mapsize = roundup(howmany(maxino, NBBY), TP_BSIZE);
 470         usedinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
 471         dumpdirmap = (char *)calloc((unsigned) mapsize, sizeof(char));
 472         dumpinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
 473         tapesize = 3 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
 474
 475         nonodump = spcl.c_level < honorlevel;
 476
 477         msg("mapping (Pass I) [regular files]\n");
 478 #ifdef  __linux__
 479         if (directory[0] == 0)
 480                 anydirskipped = mapfiles(maxino, &tapesize);
 481         else
 482                 anydirskipped = mapfilesfromdir(maxino, &tapesize, directory);
 483 #else
 484         anydirskipped = mapfiles(maxino, &tapesize);
 485 #endif
 486
 487         msg("mapping (Pass II) [directories]\n");
 488         while (anydirskipped) {
 489                 anydirskipped = mapdirs(maxino, &tapesize);
 490         }
 491
 492         if (pipeout || unlimited) {
 493                 tapesize += 10; /* 10 trailer blocks */
 494                 msg("estimated %ld tape blocks.\n", tapesize);
 495         } else {
 496                 double fetapes;
 497
 498                 if (blocksperfile)
 499                         fetapes = (double) tapesize / blocksperfile;
 500                 else if (cartridge) {
 501                         /* Estimate number of tapes, assuming streaming stops at
 502                            the end of each block written, and not in mid-block.
 503                            Assume no erroneous blocks; this can be compensated
 504                            for with an artificially low tape size. */
 505                         fetapes =
 506                         (         (double) tapesize     /* blocks */
 507                                 * TP_BSIZE      /* bytes/block */
 508                                 * (1.0/density) /* 0.1" / byte " */
 509                           +
 510                                   (double) tapesize     /* blocks */
 511                                 * (1.0/ntrec)   /* streaming-stops per block */
 512                                 * 15.48         /* 0.1" / streaming-stop " */
 513                         ) * (1.0 / tsize );     /* tape / 0.1" " */
 514                 } else {
 515                         /* Estimate number of tapes, for old fashioned 9-track
 516                            tape */
 517                         int tenthsperirg = (density == 625) ? 3 : 7;
 518                         fetapes =
 519                         (         (double) tapesize     /* blocks */
 520                                 * TP_BSIZE      /* bytes / block */
 521                                 * (1.0/density) /* 0.1" / byte " */
 522                           +
 523                                   (double) tapesize     /* blocks */
 524                                 * (1.0/ntrec)   /* IRG's / block */
 525                                 * tenthsperirg  /* 0.1" / IRG " */
 526                         ) * (1.0 / tsize );     /* tape / 0.1" " */
 527                 }
 528                 etapes = fetapes;               /* truncating assignment */
 529                 etapes++;
 530                 /* count the dumped inodes map on each additional tape */
 531                 tapesize += (etapes - 1) *
 532                         (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
 533                 tapesize += etapes + 10;        /* headers + 10 trailer blks */
 534                 msg("estimated %ld tape blocks on %3.2f tape(s).\n",
 535                     tapesize, fetapes);
 536         }
 537
 538         /*
 539          * Allocate tape buffer.
 540          */
 541         if (!alloctape())
 542                 quit(
 543         "can't allocate tape buffers - try a smaller blocking factor.\n");
 544
 545         startnewtape(1);
 546         (void)time((time_t *)&(tstart_writing));
 547         dumpmap(usedinomap, TS_CLRI, maxino - 1);
 548
 549         msg("dumping (Pass III) [directories]\n");
 550         dirty = 0;              /* XXX just to get gcc to shut up */
 551         for (map = dumpdirmap, ino = 1; ino < maxino; ino++) {
 552                 if (((ino - 1) % NBBY) == 0)    /* map is offset by 1 */
 553                         dirty = *map++;
 554                 else
 555                         dirty >>= 1;
 556                 if ((dirty & 1) == 0)
 557                         continue;
 558                 /*
 559                  * Skip directory inodes deleted and maybe reallocated
 560                  */
 561                 dp = getino(ino);
 562                 if ((dp->di_mode & IFMT) != IFDIR)
 563                         continue;
 564 #ifdef  __linux__
 565                 (void)dumpdirino(dp, ino);
 566 #else
 567                 (void)dumpino(dp, ino);
 568 #endif
 569         }
 570
 571         msg("dumping (Pass IV) [regular files]\n");
 572         for (map = dumpinomap, ino = 1; ino < maxino; ino++) {
 573                 int mode;
 574
 575                 if (((ino - 1) % NBBY) == 0)    /* map is offset by 1 */
 576                         dirty = *map++;
 577                 else
 578                         dirty >>= 1;
 579                 if ((dirty & 1) == 0)
 580                         continue;
 581                 /*
 582                  * Skip inodes deleted and reallocated as directories.
 583                  */
 584                 dp = getino(ino);
 585                 mode = dp->di_mode & IFMT;
 586                 if (mode == IFDIR)
 587                         continue;
 588                 (void)dumpino(dp, ino);
 589         }
 590
 591         (void)time((time_t *)&(tend_writing));
 592         spcl.c_type = TS_END;
 593         for (i = 0; i < ntrec; i++)
 594                 writeheader(maxino - 1);
 595         if (pipeout)
 596                 msg("DUMP: %ld tape blocks\n", spcl.c_tapea);
 597         else
 598                 msg("DUMP: %ld tape blocks on %d volumes(s)\n",
 599                     spcl.c_tapea, spcl.c_volume);
 600
 601         /* report dump performance, avoid division through zero */
 602         if (tend_writing - tstart_writing == 0)
 603                 msg("finished in less than a second\n");
 604         else
 605                 msg("finished in %d seconds, throughput %d KBytes/sec\n",
 606                     tend_writing - tstart_writing,
 607                     spcl.c_tapea / (tend_writing - tstart_writing));
 608
 609         putdumptime();
 610         trewind();
 611         broadcast("DUMP IS DONE!\7\7\n");
 612         msg("DUMP IS DONE\n");
 613         Exit(X_FINOK);
 614         /* NOTREACHED */
 615         exit(1);        /* gcc - shut up */
 616 }
 617
 618 static void
 619 usage()
 620 {
 621         fprintf(stderr,
 622                 "usage: dump [-0123456789ac"
 623 #ifdef KERBEROS
 624                 "k"
 625 #endif
 626                 "nu] [-B records] [-b blocksize] [-d density] [-f file]\n"
 627                 "            [-h level] [-s feet] [-T date] filesystem\n"
 628                 "       dump [-W | -w]\n");
 629         exit(X_STARTUP);
 630 }
 631
 632 /*
 633  * Pick up a numeric argument.  It must be nonnegative and in the given
 634  * range (except that a vmax of 0 means unlimited).
 635  */
 636 static long
 637 numarg(meaning, vmin, vmax)
 638         char *meaning;
 639         long vmin, vmax;
 640 {
 641         char *p;
 642         long val;
 643
 644         val = strtol(optarg, &p, 10);
 645         if (*p)
 646                 errx(1, "illegal %s -- %s", meaning, optarg);
 647         if (val < vmin || (vmax && val > vmax))
 648                 errx(1, "%s must be between %ld and %ld", meaning, vmin, vmax);
 649         return (val);
 650 }
 651
 652 void
 653 sig(signo)
 654         int signo;
 655 {
 656         switch(signo) {
 657         case SIGALRM:
 658         case SIGBUS:
 659         case SIGFPE:
 660         case SIGHUP:
 661         case SIGTERM:
 662         case SIGTRAP:
 663                 if (pipeout)
 664                         quit("Signal on pipe: cannot recover\n");
 665                 msg("Rewriting attempted as response to unknown signal.\n");
 666                 (void)fflush(stderr);
 667                 (void)fflush(stdout);
 668                 close_rewind();
 669                 exit(X_REWRITE);
 670                 /* NOTREACHED */
 671         case SIGSEGV:
 672                 msg("SIGSEGV: ABORTING!\n");
 673                 (void)signal(SIGSEGV, SIG_DFL);
 674                 (void)kill(0, SIGSEGV);
 675                 /* NOTREACHED */
 676         }
 677 }
 678
 679 char *
 680 rawname(cp)
 681         char *cp;
 682 {
 683 #ifdef  __linux__
 684         return cp;
 685 #else   /* __linux__ */
 686         static char rawbuf[MAXPATHLEN];
 687         char *dp = strrchr(cp, '/');
 688
 689         if (dp == NULL)
 690                 return (NULL);
 691         *dp = '\0';
 692         (void)strncpy(rawbuf, cp, MAXPATHLEN - 1);
 693         rawbuf[MAXPATHLEN-1] = '\0';
 694         *dp = '/';
 695         (void)strncat(rawbuf, "/r", MAXPATHLEN - 1 - strlen(rawbuf));
 696         (void)strncat(rawbuf, dp + 1, MAXPATHLEN - 1 - strlen(rawbuf));
 697         return (rawbuf);
 698 #endif  /* __linux__ */
 699 }
 700
 701 /*
 702  * obsolete --
 703  *      Change set of key letters and ordered arguments into something
 704  *      getopt(3) will like.
 705  */
 706 static void
 707 obsolete(argcp, argvp)
 708         int *argcp;
 709         char **argvp[];
 710 {
 711         int argc, flags;
 712         char *ap, **argv, *flagsp=NULL, **nargv, *p=NULL;
 713
 714         /* Setup. */
 715         argv = *argvp;
 716         argc = *argcp;
 717
 718         /* Return if no arguments or first argument has leading dash. */
 719         ap = argv[1];
 720         if (argc == 1 || *ap == '-')
 721                 return;
 722
 723         /* Allocate space for new arguments. */
 724         if ((*argvp = nargv = malloc((argc + 1) * sizeof(char *))) == NULL ||
 725             (p = flagsp = malloc(strlen(ap) + 2)) == NULL)
 726                 err(1, NULL);
 727
 728         *nargv++ = *argv;
 729         argv += 2;
 730
 731         for (flags = 0; *ap; ++ap) {
 732                 switch (*ap) {
 733                 case 'B':
 734                 case 'b':
 735                 case 'd':
 736                 case 'f':
 737                 case 'h':
 738                 case 's':
 739                 case 'T':
 740                         if (*argv == NULL) {
 741                                 warnx("option requires an argument -- %c", *ap);
 742                                 usage();
 743                         }
 744                         if ((nargv[0] = malloc(strlen(*argv) + 2 + 1)) == NULL)
 745                                 err(1, NULL);
 746                         nargv[0][0] = '-';
 747                         nargv[0][1] = *ap;
 748                         (void)strcpy(&nargv[0][2], *argv);
 749                         ++argv;
 750                         ++nargv;
 751                         break;
 752                 default:
 753                         if (!flags) {
 754                                 *p++ = '-';
 755                                 flags = 1;
 756                         }
 757                         *p++ = *ap;
 758                         break;
 759                 }
 760         }
 761
 762         /* Terminate flags. */
 763         if (flags) {
 764                 *p = '\0';
 765                 *nargv++ = flagsp;
 766         }
 767
 768         /* Copy remaining arguments. */
 769         while ((*nargv++ = *argv++));
 770
 771         /* Update argument count. */
 772         *argcp = nargv - *argvp - 1;
 773 }