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 <stelian@popies.net>, 1999-2000
   6  *      Stelian Pop <stelian@popies.net> - Alcôve <www.alcove.com>, 2000-2002
   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. Neither the name of the University nor the names of its contributors
  22  *    may be used to endorse or promote products derived from this software
  23  *    without specific prior written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  27  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  28  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  29  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  30  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  31  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  35  * SUCH DAMAGE.
  36  */
  37
  38 #ifndef lint
  39 static const char rcsid[] =
  40         "$Id: main.c,v 1.94 2004/07/05 15:12:45 stelian Exp $";
  41 #endif /* not lint */
  42
  43 #include <config.h>
  44 #include <compatlfs.h>
  45 #include <ctype.h>
  46 #include <compaterr.h>
  47 #include <fcntl.h>
  48 #include <fstab.h>
  49 #include <signal.h>
  50 #include <stdio.h>
  51 #include <stdlib.h>
  52 #include <string.h>
  53 #include <unistd.h>
  54 #include <errno.h>
  55 #include <mntent.h>
  56
  57 #include <sys/param.h>
  58 #include <sys/time.h>
  59 #include <time.h>
  60 #ifdef __linux__
  61 #include <linux/types.h>
  62 #ifdef HAVE_EXT2FS_EXT2_FS_H
  63 #include <ext2fs/ext2_fs.h>
  64 #else
  65 #include <linux/ext2_fs.h>
  66 #endif
  67 #include <ext2fs/ext2fs.h>
  68 #include <sys/stat.h>
  69 #include <bsdcompat.h>
  70 #include <linux/fs.h>   /* for definition of BLKFLSBUF */
  71 #elif defined sunos
  72 #include <sys/vnode.h>
  73
  74 #include <ufs/inode.h>
  75 #include <ufs/fs.h>
  76 #else
  77 #include <ufs/ufs/dinode.h>
  78 #include <ufs/ffs/fs.h>
  79 #endif
  80
  81 #include <protocols/dumprestore.h>
  82
  83 #include "dump.h"
  84 #include "pathnames.h"
  85 #include "bylabel.h"
  86
  87 #ifndef SBOFF
  88 #define SBOFF (SBLOCK * DEV_BSIZE)
  89 #endif
  90
  91 int abortifconnerr = 1;         /* set to 1 if lib dumprmt.o should exit on connection errors
  92                                 otherwise just print a message using msg */
  93 /*
  94  * Dump maps used to describe what is to be dumped.
  95  */
  96 int     mapsize;        /* size of the state maps */
  97 char    *usedinomap;    /* map of allocated inodes */
  98 char    *dumpdirmap;    /* map of directories to be dumped */
  99 char    *dumpinomap;    /* map of files to be dumped */
 100 char    *metainomap;    /* which of the inodes in dumpinomap will get
 101                            only their metadata dumped */
 102
 103 const char *disk;       /* name of the disk file */
 104 char    tape[MAXPATHLEN];/* name of the tape file */
 105 char    *tapeprefix;    /* prefix of the tape file */
 106 char    *dumpdates;     /* name of the file containing dump date information*/
 107 char    lastlevel[NUM_STR_SIZE];/* dump level of previous dump */
 108 char    level[NUM_STR_SIZE];/* dump level of this dump */
 109 int     zipflag;        /* which compression method */
 110 int     Afile = -1;     /* archive file descriptor */
 111 int     AfileActive = 1;/* Afile flag */
 112 int     uflag;          /* update flag */
 113 int     mflag;          /* dump metadata only if possible */
 114 int     Mflag;          /* multi-volume flag */
 115 int     qflag;          /* quit on errors flag */
 116 int     vflag;          /* verbose flag */
 117 int     breademax = 32; /* maximum number of bread errors before we quit */
 118 char    *eot_script;    /* end of volume script fiag */
 119 int     diskfd;         /* disk file descriptor */
 120 int     tapefd;         /* tape file descriptor */
 121 int     pipeout;        /* true => output to standard output */
 122 int     fifoout;        /* true => output to fifo */
 123 dump_ino_t curino;      /* current inumber; used globally */
 124 int     newtape;        /* new tape flag */
 125 int     density;        /* density in 0.1" units */
 126 long    tapesize;       /* estimated tape size, blocks */
 127 long    tsize;          /* tape size in 0.1" units */
 128 long    asize;          /* number of 0.1" units written on current tape */
 129 int     etapes;         /* estimated number of tapes */
 130 int     nonodump;       /* if set, do not honor UF_NODUMP user flags */
 131 int     unlimited;      /* if set, write to end of medium */
 132 int     compressed;     /* if set, dump is to be compressed */
 133 long long bytes_written;/* total bytes written to tape */
 134 long    uncomprblks;    /* uncompressed blocks written to tape */
 135 int     notify;         /* notify operator flag */
 136 int     blockswritten;  /* number of blocks written on current tape */
 137 int     tapeno;         /* current tape number */
 138 time_t  tstart_writing; /* when started writing the first tape block */
 139 time_t  tend_writing;   /* after writing the last tape block */
 140 #ifdef __linux__
 141 ext2_filsys fs;
 142 #else
 143 struct  fs *sblock;     /* the file system super block */
 144 char    sblock_buf[MAXBSIZE];
 145 #endif
 146 long    xferrate;       /* averaged transfer rate of all volumes */
 147 long    dev_bsize;      /* block size of underlying disk device */
 148 int     dev_bshift;     /* log2(dev_bsize) */
 149 int     tp_bshift;      /* log2(TP_BSIZE) */
 150 dump_ino_t volinfo[TP_NINOS];/* which inode on which volume archive info */
 151
 152 #ifdef USE_QFA
 153 int     gTapeposfd;
 154 char    *gTapeposfile;
 155 char    gTps[255];
 156 int32_t gThisDumpDate;
 157 #endif /* USE_QFA */
 158
 159 struct  dumptime *dthead;       /* head of the list version */
 160 int     nddates;                /* number of records (might be zero) */
 161 int     ddates_in;              /* we have read the increment file */
 162 struct  dumpdates **ddatev;     /* the arrayfied version */
 163
 164 int     notify = 0;     /* notify operator flag */
 165 int     blockswritten = 0;      /* number of blocks written on current tape */
 166 int     tapeno = 0;     /* current tape number */
 167 int     density = 0;    /* density in bytes/0.1" " <- this is for hilit19 */
 168 int     ntrec = NTREC;  /* # blocks in each tape record */
 169 int     cartridge = 0;  /* Assume non-cartridge tape */
 170 #ifdef USE_QFA
 171 int     tapepos = 0;    /* assume no QFA tapeposition needed by user */
 172 #endif /* USE_QFA */
 173 int     dokerberos = 0; /* Use Kerberos authentication */
 174 long    dev_bsize = 1;  /* recalculated below */
 175 long    *blocksperfiles = NULL; /* output blocks per file(s) */
 176 char    *host = NULL;   /* remote host (if any) */
 177 int     sizest = 0;     /* return size estimate only */
 178 int     compressed = 0; /* use zlib to compress the output, compress level 1-9 */
 179 long long bytes_written = 0; /* total bytes written */
 180 long    uncomprblks = 0;/* uncompressed blocks written */
 181
 182 long smtc_errno;
 183
 184 #ifdef  __linux__
 185 char    *__progname;
 186 #endif
 187
 188 int     maxbsize = 1024*1024;     /* XXX MAXBSIZE from sys/param.h */
 189 static long numarg __P((const char *, long, long));
 190 static long *numlistarg __P((const char *, long, long));
 191 static void obsolete __P((int *, char **[]));
 192 static void usage __P((void));
 193 static void do_exclude_from_file __P((char *));
 194 static void do_exclude_ino_str __P((char *));
 195 static void incompat_flags __P((int, char, char));
 196
 197 static char* iexclude_bitmap = NULL;            /* the inode exclude bitmap */
 198 static unsigned int iexclude_bitmap_bytes = 0;  /* size of bitmap in bytes */
 199
 200 int
 201 main(int argc, char *argv[])
 202 {
 203         dump_ino_t ino;
 204         int dirty;
 205         struct dinode *dp;
 206         struct mntent *dt;
 207         char *map;
 208         int ch, pch = 0;
 209         int i, anydirskipped;
 210         int aflag = 0, bflag = 0, Tflag = 0, honorlevel = 1;
 211         dump_ino_t maxino;
 212         struct STAT statbuf;
 213         dev_t filedev = 0;
 214 #ifdef  __linux__
 215         errcode_t retval;
 216         char directory[MAXPATHLEN];
 217         char pathname[MAXPATHLEN];
 218 #endif
 219         time_t tnow;
 220         char *diskparam;
 221         char *Apath = NULL;
 222
 223         spcl.c_label[0] = '\0';
 224         spcl.c_date = time(NULL);
 225
 226 #ifdef __linux__
 227         __progname = argv[0];
 228         directory[0] = 0;
 229         initialize_ext2_error_table();
 230 #endif
 231
 232         tsize = 0;      /* Default later, based on 'c' option for cart tapes */
 233         unlimited = 1;
 234         eot_script = NULL;
 235         if ((tapeprefix = getenv("TAPE")) == NULL)
 236                 tapeprefix = _PATH_DEFTAPE;
 237         dumpdates = _PATH_DUMPDATES;
 238         if (TP_BSIZE / DEV_BSIZE == 0 || TP_BSIZE % DEV_BSIZE != 0)
 239                 quit("TP_BSIZE must be a multiple of DEV_BSIZE\n");
 240         memset(&lastlevel, 0, NUM_STR_SIZE);
 241         memset(&level, 0, NUM_STR_SIZE);
 242
 243         if (argc < 2)
 244                 usage();
 245
 246         obsolete(&argc, &argv);
 247
 248 #ifdef USE_QFA
 249         gTapeposfd = -1;
 250 #endif /* USE_QFA */
 251
 252         while ((ch = getopt(argc, argv,
 253                             "0123456789A:aB:b:cd:D:e:E:f:F:h:I:"
 254 #ifdef HAVE_BZLIB
 255                             "j::"
 256 #endif
 257                             "L:"
 258 #ifdef KERBEROS
 259                             "k"
 260 #endif
 261                             "mMnq"
 262 #ifdef USE_QFA
 263                             "Q:"
 264 #endif
 265                             "s:ST:uvWw"
 266 #ifdef HAVE_LZO
 267                             "y"
 268 #endif
 269 #ifdef HAVE_ZLIB
 270                             "z::"
 271 #endif
 272                             )) != -1)
 273                 switch (ch) {
 274                 /* dump level */
 275                 case '0': case '1': case '2': case '3': case '4':
 276                 case '5': case '6': case '7': case '8': case '9':
 277                         if ((pch >= '0') && (pch <= '9') && (strlen(level) < NUM_STR_SIZE))
 278                                 level[strlen(level)] = ch;
 279                         else
 280                                 level[0] = ch;
 281                         pch = ch;
 282                         break;
 283
 284                 case 'A':               /* archive file */
 285                         Apath = optarg;
 286                         break;
 287
 288                 case 'a':               /* `auto-size', Write to EOM. */
 289                         unlimited = 1;
 290                         aflag = 1;
 291                         break;
 292
 293                 case 'B':               /* blocks per output file */
 294                         unlimited = 0;
 295                         blocksperfiles = numlistarg("number of blocks per file",
 296                             1L, 0L);
 297                         break;
 298
 299                 case 'b':               /* blocks per tape write */
 300                         ntrec = numarg("number of blocks per write",
 301                             1L, 1048576L);
 302                         if (ntrec > maxbsize/1024) {
 303                                 msg("Please choose a blocksize <= %dkB\n",
 304                                         maxbsize/1024);
 305                                 msg("The ENTIRE dump is aborted.\n");
 306                                 exit(X_STARTUP);
 307                         }
 308                         bflag = 1;
 309                         break;
 310
 311                 case 'c':               /* Tape is cart. not 9-track */
 312                         unlimited = 0;
 313                         cartridge = 1;
 314                         break;
 315
 316                 case 'd':               /* density, in bits per inch */
 317                         unlimited = 0;
 318                         density = numarg("density", 10L, 327670L) / 10;
 319                         if (density >= 625 && !bflag)
 320                                 ntrec = HIGHDENSITYTREC;
 321                         break;
 322
 323                 case 'D':               /* path of dumpdates file */
 324                         dumpdates = optarg;
 325                         break;
 326
 327                                         /* 04-Feb-00 ILC */
 328                 case 'e':               /* exclude an inode */
 329                         {
 330                         char *p = optarg, *q;
 331                         while ((q = strchr(p, ','))) {
 332                                 *q = '\0';
 333                                 do_exclude_ino_str(p);
 334                                 p = q + 1;
 335                         }
 336                         do_exclude_ino_str(p);
 337                         }
 338                         break;
 339
 340                 case 'E':               /* exclude inodes read from file */
 341                         do_exclude_from_file(optarg);
 342                         break;
 343
 344                 case 'f':               /* output file */
 345                         tapeprefix = optarg;
 346                         break;
 347
 348                 case 'F':               /* end of tape script */
 349                         eot_script = optarg;
 350                         break;
 351
 352                 case 'h':
 353                         honorlevel = numarg("honor level", 0L, 10L);
 354                         break;
 355
 356 #ifdef HAVE_BZLIB
 357                 case 'j':
 358                         compressed = 2;
 359                         zipflag = COMPRESS_BZLIB;
 360                         if (optarg)
 361                                 compressed = numarg("compress level", 1L, 9L);
 362                         break;
 363 #endif /* HAVE_BZLIB */
 364
 365                 case 'I':
 366                         breademax =
 367                           numarg ("number of errors to ignore", 0L, 0L);
 368                         break;
 369
 370 #ifdef KERBEROS
 371                 case 'k':
 372                         dokerberos = 1;
 373                         break;
 374 #endif
 375
 376                 case 'L':
 377                         /*
 378                          * Note that although there are LBLSIZE characters,
 379                          * the last must be '\0', so the limit on strlen()
 380                          * is really LBLSIZE-1.
 381                          */
 382                         strncpy(spcl.c_label, optarg, LBLSIZE);
 383                         spcl.c_label[LBLSIZE-1] = '\0';
 384                         if (strlen(optarg) > LBLSIZE-1) {
 385                                 msg(
 386                 "WARNING Label `%s' is larger than limit of %d characters.\n",
 387                                     optarg, LBLSIZE-1);
 388                                 msg("WARNING: Using truncated label `%s'.\n",
 389                                     spcl.c_label);
 390                         }
 391                         break;
 392
 393                 case 'm':               /* metadata only flag */
 394                         mflag = 1;
 395                         break;
 396
 397                 case 'M':               /* multi-volume flag */
 398                         Mflag = 1;
 399                         break;
 400
 401                 case 'n':               /* notify operators */
 402                         notify = 1;
 403                         break;
 404
 405                 case 'q':
 406                         qflag = 1;
 407                         break;
 408
 409 #ifdef USE_QFA
 410                 case 'Q':               /* create tapeposfile */
 411                         gTapeposfile = optarg;
 412                         tapepos = 1;
 413                         break;
 414 #endif /* USE_QFA */
 415
 416                 case 's':               /* tape size, feet */
 417                         unlimited = 0;
 418                         tsize = numarg("tape size", 1L, 0L) * 12 * 10;
 419                         break;
 420
 421                 case 'S':
 422                         sizest = 1;     /* return size estimate only */
 423                         break;
 424
 425                 case 'T':               /* time of last dump */
 426                         spcl.c_ddate = unctime(optarg);
 427                         if (spcl.c_ddate < 0) {
 428                                 msg("bad time \"%s\"\n", optarg);
 429                                 msg("The ENTIRE dump is aborted.\n");
 430                                 exit(X_STARTUP);
 431                         }
 432                         Tflag = 1;
 433                         lastlevel[0] = '?'; lastlevel[1] = '\0';
 434                         break;
 435
 436                 case 'u':               /* update dumpdates */
 437                         uflag = 1;
 438                         break;
 439
 440                 case 'v':               /* verbose */
 441                         vflag = 1;
 442                         break;
 443
 444                 case 'W':               /* what to do */
 445                 case 'w':
 446                         lastdump(ch);
 447                         exit(X_FINOK);  /* do nothing else */
 448 #ifdef HAVE_LZO
 449                 case 'y':
 450                         compressed = 2;
 451                         zipflag = COMPRESS_LZO;
 452                         break;
 453 #endif /* HAVE_LZO */
 454
 455 #ifdef HAVE_ZLIB
 456                 case 'z':
 457                         compressed = 2;
 458                         zipflag = COMPRESS_ZLIB;
 459                         if (optarg)
 460                                 compressed = numarg("compress level", 1L, 9L);
 461                         break;
 462 #endif /* HAVE_ZLIB */
 463
 464                 default:
 465                         usage();
 466                 }
 467         argc -= optind;
 468         argv += optind;
 469
 470         if (argc < 1) {
 471                 msg("Must specify disk or filesystem\n");
 472                 msg("The ENTIRE dump is aborted.\n");
 473                 exit(X_STARTUP);
 474         }
 475         diskparam = *argv++;
 476         if (strlen(diskparam) >= MAXPATHLEN) {
 477                 msg("Disk or filesystem name too long: %s\n", diskparam);
 478                 msg("The ENTIRE dump is aborted.\n");
 479                 exit(X_STARTUP);
 480         }
 481         argc--;
 482         incompat_flags(Tflag && uflag, 'T', 'u');
 483         incompat_flags(aflag && blocksperfiles, 'a', 'B');
 484         incompat_flags(aflag && cartridge, 'a', 'c');
 485         incompat_flags(aflag && density, 'a', 'd');
 486         incompat_flags(aflag && tsize, 'a', 's');
 487
 488         if (strcmp(tapeprefix, "-") == 0) {
 489                 pipeout++;
 490                 tapeprefix = "standard output";
 491         }
 492
 493         if (blocksperfiles && !compressed)
 494                 for (i = 1; i <= *blocksperfiles; i++)
 495                         blocksperfiles[i] = blocksperfiles[i] / ntrec * ntrec; /* round down */
 496         else if (!unlimited) {
 497                 /*
 498                  * Determine how to default tape size and density
 499                  *
 500                  *              density                         tape size
 501                  * 9-track      1600 bpi (160 bytes/.1")        2300 ft.
 502                  * 9-track      6250 bpi (625 bytes/.1")        2300 ft.
 503                  * cartridge    8000 bpi (100 bytes/.1")        1700 ft.
 504                  *                                              (450*4 - slop)
 505                  * hilit19 hits again: "
 506                  */
 507                 if (density == 0)
 508                         density = cartridge ? 100 : 160;
 509                 if (tsize == 0)
 510                         tsize = cartridge ? 1700L*120L : 2300L*120L;
 511         }
 512
 513         {
 514                 int i;
 515                 char *n;
 516
 517                 if ((n = strchr(tapeprefix, ':'))) {
 518                         for (i = 0; i < (n - tapeprefix); i++) {
 519                                 if (tapeprefix[i] == '/')
 520                                         break;
 521                         }
 522                         if (tapeprefix[i] != '/') {
 523                                 host = tapeprefix;
 524                                 tapeprefix = strchr(host, ':');
 525                                 *tapeprefix++ = '\0';
 526 #ifdef RDUMP
 527                                 if (index(tapeprefix, '\n')) {
 528                                         msg("invalid characters in tape\n");
 529                                         msg("The ENTIRE dump is aborted.\n");
 530                                         exit(X_STARTUP);
 531                                 }
 532                                 if (rmthost(host) == 0)
 533                                         exit(X_STARTUP);
 534 #else
 535                                 msg("remote dump not enabled\n");
 536                                 msg("The ENTIRE dump is aborted.\n");
 537                                 exit(X_STARTUP);
 538 #endif
 539                         }
 540                 }
 541         }
 542
 543         (void)setuid(getuid()); /* rmthost() is the only reason to be setuid */
 544         if (Apath && (Afile = open(Apath, O_WRONLY|O_CREAT|O_TRUNC,
 545                                    S_IRUSR | S_IWUSR | S_IRGRP |
 546                                    S_IWGRP | S_IROTH | S_IWOTH)) < 0) {
 547                 msg("Cannot open %s for writing: %s\n",
 548                     optarg, strerror(errno));
 549                 msg("The ENTIRE dump is aborted.\n");
 550                 exit(X_STARTUP);
 551         }
 552
 553         if (signal(SIGHUP, SIG_IGN) != SIG_IGN)
 554                 signal(SIGHUP, sig);
 555         if (signal(SIGTRAP, SIG_IGN) != SIG_IGN)
 556                 signal(SIGTRAP, sig);
 557         if (signal(SIGFPE, SIG_IGN) != SIG_IGN)
 558                 signal(SIGFPE, sig);
 559         if (signal(SIGBUS, SIG_IGN) != SIG_IGN)
 560                 signal(SIGBUS, sig);
 561         if (signal(SIGSEGV, SIG_IGN) != SIG_IGN)
 562                 signal(SIGSEGV, sig);
 563         if (signal(SIGTERM, SIG_IGN) != SIG_IGN)
 564                 signal(SIGTERM, sig);
 565         if (signal(SIGINT, interrupt) == SIG_IGN)
 566                 signal(SIGINT, SIG_IGN);
 567 #ifdef SIGXCPU
 568         signal(SIGXCPU, SIG_IGN);
 569 #endif /* SIGXCPU */
 570 #ifdef SIGXFSZ
 571         signal(SIGXFSZ, SIG_IGN);
 572 #endif /* SIGXFSZ */
 573
 574         set_operators();        /* /etc/group snarfed */
 575         getfstab();             /* /etc/fstab snarfed */
 576
 577         /*
 578          *      disk may end in / and this can confuse
 579          *      fstabsearch.
 580          */
 581         i = strlen(diskparam) - 1;
 582         if (i > 1 && diskparam[i] == '/')
 583                 if (!(i == 6 && !strcmp(diskparam, "LABEL=/")))
 584                         diskparam[i] = '\0';
 585
 586         disk = get_device_name(diskparam);
 587         if (!disk)
 588                 disk = strdup(diskparam);
 589
 590         /*
 591          *      disk can be either the full special file name,
 592          *      the suffix of the special file name,
 593          *      the special name missing the leading '/',
 594          *      the file system name with or without the leading '/'.
 595          */
 596         if ((dt = fstabsearch(disk)) != NULL) {
 597                 /* if found then only one parameter (i.e. partition)
 598                  * is allowed */
 599                 if (argc >= 1) {
 600                         (void)fprintf(stderr, "Unknown arguments to dump:");
 601                         while (argc--)
 602                                 (void)fprintf(stderr, " %s", *argv++);
 603                         (void)fprintf(stderr, "\n");
 604                         msg("The ENTIRE dump is aborted.\n");
 605                         exit(X_STARTUP);
 606                 }
 607                 disk = rawname(dt->mnt_fsname);
 608                 (void)strncpy(spcl.c_dev, dt->mnt_fsname, NAMELEN);
 609                 (void)strncpy(spcl.c_filesys, dt->mnt_dir, NAMELEN);
 610         } else {
 611 #ifdef  __linux__
 612 #ifdef  HAVE_REALPATH
 613                 if (realpath(disk, pathname) == NULL)
 614 #endif
 615                         strcpy(pathname, disk);
 616                 /*
 617                  * The argument could be now a mountpoint of
 618                  * a filesystem specified in fstab. Search for it.
 619                  */
 620                 if ((dt = fstabsearch(pathname)) != NULL) {
 621                         disk = rawname(dt->mnt_fsname);
 622                         (void)strncpy(spcl.c_dev, dt->mnt_fsname, NAMELEN);
 623                         (void)strncpy(spcl.c_filesys, dt->mnt_dir, NAMELEN);
 624                 } else {
 625                         /*
 626                          * The argument was not found in the fstab
 627                          * assume that this is a subtree and search for it
 628                          */
 629                         dt = fstabsearchdir(pathname, directory);
 630                         if (dt != NULL) {
 631                                 char name[MAXPATHLEN];
 632                                 (void)strncpy(spcl.c_dev, dt->mnt_fsname, NAMELEN);
 633                                 (void)snprintf(name, sizeof(name), "%s (dir %s)",
 634                                               dt->mnt_dir, directory);
 635                                 (void)strncpy(spcl.c_filesys, name, NAMELEN);
 636                                 disk = rawname(dt->mnt_fsname);
 637                         } else {
 638                                 (void)strncpy(spcl.c_dev, disk, NAMELEN);
 639                                 (void)strncpy(spcl.c_filesys, "an unlisted file system",
 640                                     NAMELEN);
 641                         }
 642                 }
 643 #else
 644                 (void)strncpy(spcl.c_dev, disk, NAMELEN);
 645                 (void)strncpy(spcl.c_filesys, "an unlisted file system",
 646                     NAMELEN);
 647 #endif
 648         }
 649
 650         if (directory[0] != 0) {
 651                 if (atoi(level) != 0) {
 652                         msg("Only level 0 dumps are allowed on a subdirectory\n");
 653                         msg("The ENTIRE dump is aborted.\n");
 654                         exit(X_STARTUP);
 655                 }
 656                 if (uflag) {
 657                         msg("You can't update the dumpdates file when dumping a subdirectory\n");
 658                         msg("The ENTIRE dump is aborted.\n");
 659                         exit(X_STARTUP);
 660                 }
 661         }
 662         spcl.c_dev[NAMELEN-1] = '\0';
 663         spcl.c_filesys[NAMELEN-1] = '\0';
 664         (void)gethostname(spcl.c_host, NAMELEN);
 665         spcl.c_host[NAMELEN-1] = '\0';
 666         spcl.c_level = atoi(level);
 667         spcl.c_type = TS_TAPE;
 668         if (!Tflag)
 669                 getdumptime(uflag);             /* dumpdates snarfed */
 670
 671         if (spcl.c_ddate == 0 && spcl.c_level) {
 672                 msg("WARNING: There is no inferior level dump on this filesystem\n");
 673                 msg("WARNING: Assuming a level 0 dump by default\n");
 674                 level[0] = '0'; level[1] = '\0';
 675                 spcl.c_level = 0;
 676         }
 677
 678         if (Mflag)
 679                 snprintf(tape, MAXPATHLEN, "%s%03d", tapeprefix, tapeno + 1);
 680         else
 681                 strncpy(tape, tapeprefix, MAXPATHLEN);
 682         tape[MAXPATHLEN - 1] = '\0';
 683
 684         if (!pipeout) {
 685                 if (STAT(tape, &statbuf) != -1)
 686                         fifoout= statbuf.st_mode & S_IFIFO;
 687         }
 688
 689         if (!sizest) {
 690
 691                 msg("Date of this level %s dump: %s", level,
 692                     ctime4(&spcl.c_date));
 693 #ifdef USE_QFA
 694                 gThisDumpDate = spcl.c_date;
 695 #endif
 696                 if (spcl.c_ddate)
 697                         msg("Date of last level %s dump: %s", lastlevel,
 698                             ctime4(&spcl.c_ddate));
 699                 msg("Dumping %s (%s) ", disk, spcl.c_filesys);
 700                 if (host)
 701                         msgtail("to %s on host %s\n", tape, host);
 702                 else
 703                         msgtail("to %s\n", tape);
 704         } /* end of size estimate */
 705
 706 #ifdef  __linux__
 707         if ((diskfd = OPEN(disk, O_RDONLY)) < 0) {
 708                 msg("Cannot open %s\n", disk);
 709                 msg("The ENTIRE dump is aborted.\n");
 710                 exit(X_STARTUP);
 711         }
 712 #ifdef BLKFLSBUF
 713         (void)ioctl(diskfd, BLKFLSBUF, 0);
 714 #endif
 715         retval = dump_fs_open(disk, &fs);
 716         if (retval) {
 717                 com_err(disk, retval, "while opening filesystem");
 718                 if (retval == EXT2_ET_REV_TOO_HIGH)
 719                         msg("Get a newer version of dump!\n");
 720                 msg("The ENTIRE dump is aborted.\n");
 721                 exit(X_STARTUP);
 722         }
 723         if (fs->super->s_rev_level > DUMP_CURRENT_REV) {
 724                 com_err(disk, retval, "while opening filesystem");
 725                 msg("Get a newer version of dump!\n");
 726                 msg("The ENTIRE dump is aborted.\n");
 727                 exit(X_STARTUP);
 728         }
 729         /* if no user label specified, use ext2 filesystem label if available */
 730         if (spcl.c_label[0] == '\0') {
 731                 const char *lbl;
 732                 if ( (lbl = get_device_label(disk)) != NULL) {
 733                         strncpy(spcl.c_label, lbl, LBLSIZE);
 734                         spcl.c_label[LBLSIZE-1] = '\0';
 735                 }
 736                 else
 737                         strcpy(spcl.c_label, "none");   /* safe strcpy. */
 738         }
 739         sync();
 740         dev_bsize = DEV_BSIZE;
 741         dev_bshift = ffs(dev_bsize) - 1;
 742         if (dev_bsize != (1 << dev_bshift))
 743                 quit("dev_bsize (%d) is not a power of 2", dev_bsize);
 744         tp_bshift = ffs(TP_BSIZE) - 1;
 745         if (TP_BSIZE != (1 << tp_bshift))
 746                 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
 747         maxino = fs->super->s_inodes_count + 1;
 748         spcl.c_flags |= DR_NEWINODEFMT;
 749 #else   /* __linux __*/
 750         if ((diskfd = open(disk, O_RDONLY)) < 0) {
 751                 msg("Cannot open %s\n", disk);
 752                 msg("The ENTIRE dump is aborted.\n");
 753                 exit(X_STARTUP);
 754         }
 755         sync();
 756         sblock = (struct fs *)sblock_buf;
 757         bread(SBOFF, (char *) sblock, SBSIZE);
 758         if (sblock->fs_magic != FS_MAGIC)
 759                 quit("bad sblock magic number\n");
 760         dev_bsize = sblock->fs_fsize / fsbtodb(sblock, 1);
 761         dev_bshift = ffs(dev_bsize) - 1;
 762         if (dev_bsize != (1 << dev_bshift))
 763                 quit("dev_bsize (%d) is not a power of 2", dev_bsize);
 764         tp_bshift = ffs(TP_BSIZE) - 1;
 765         if (TP_BSIZE != (1 << tp_bshift))
 766                 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
 767 #ifdef FS_44INODEFMT
 768         if (sblock->fs_inodefmt >= FS_44INODEFMT)
 769                 spcl.c_flags |= DR_NEWINODEFMT;
 770 #endif
 771         maxino = sblock->fs_ipg * sblock->fs_ncg;
 772 #endif  /* __linux__ */
 773         mapsize = roundup(howmany(maxino, NBBY), TP_BSIZE);
 774         usedinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
 775         dumpdirmap = (char *)calloc((unsigned) mapsize, sizeof(char));
 776         dumpinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
 777         metainomap = (char *)calloc((unsigned) mapsize, sizeof(char));
 778         if (usedinomap == NULL || dumpdirmap == NULL ||
 779             dumpinomap == NULL || metainomap == NULL)
 780                 quit("out of memory allocating inode maps\n");
 781         tapesize = 2 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
 782
 783         nonodump = spcl.c_level < honorlevel;
 784
 785         if (!sizest) {
 786                 msg("Label: %s\n", spcl.c_label);
 787
 788                 msg("Writing %d Kilobyte records\n", ntrec);
 789
 790                 if (compressed) {
 791                         if (zipflag == COMPRESS_LZO)
 792                                 msg("Compressing output (lzo)\n");
 793                         else
 794                                 msg("Compressing output at compression level %d (%s)\n",
 795                                         compressed, zipflag == COMPRESS_ZLIB ? "zlib" : "bzlib");
 796                 }
 797         }
 798
 799 #if defined(SIGINFO)
 800         (void)signal(SIGINFO, statussig);
 801 #endif
 802
 803         if (!sizest)
 804                 msg("mapping (Pass I) [regular files]\n");
 805 #ifdef  __linux__
 806         if (directory[0] == 0)
 807                 anydirskipped = mapfiles(maxino, &tapesize);
 808         else {
 809                 if (LSTAT(pathname, &statbuf) == -1) {
 810                         msg("File cannot be accessed (%s).\n", pathname);
 811                         msg("The ENTIRE dump is aborted.\n");
 812                         exit(X_STARTUP);
 813                 }
 814                 filedev = statbuf.st_dev;
 815                 if (!(statbuf.st_mode & S_IFDIR))       /* is a file */
 816                         anydirskipped = maponefile(maxino, &tapesize,
 817                                                    directory);
 818                 else
 819                         anydirskipped = mapfilesfromdir(maxino, &tapesize,
 820                                                         directory);
 821         }
 822         while (argc--) {
 823                 int anydirskipped2;
 824                 char *p = *argv;
 825                 /* check if file is available */
 826                 if (LSTAT(p, &statbuf) == -1) {
 827                         msg("File cannot be accessed (%s).\n", p);
 828                         msg("The ENTIRE dump is aborted.\n");
 829                         exit(X_STARTUP);
 830                 }
 831                 /* check if file is on same unix partiton as the first
 832                  * argument */
 833                 if (statbuf.st_dev != filedev) {
 834                         msg("Files are not on same file system (%s).\n", p);
 835                         msg("The ENTIRE dump is aborted.\n");
 836                         exit(X_STARTUP);
 837                 }
 838                 /* check if file is a directory */
 839                 if (!(statbuf.st_mode & S_IFDIR))
 840                         anydirskipped2 = maponefile(maxino, &tapesize,
 841                                                     p+strlen(dt->mnt_dir));
 842                 else
 843                         /* read directory inodes.
 844                          * NOTE: nested directories are not recognized
 845                          * so inodes may be umped twice!
 846                          */
 847                         anydirskipped2 = mapfilesfromdir(maxino, &tapesize,
 848                                                          p+strlen(dt->mnt_dir));
 849                 if (!anydirskipped)
 850                         anydirskipped = anydirskipped2;
 851                 argv++;
 852         }
 853 #else
 854         anydirskipped = mapfiles(maxino, &tapesize);
 855 #endif
 856
 857         if (!sizest)
 858                 msg("mapping (Pass II) [directories]\n");
 859         while (anydirskipped) {
 860                 anydirskipped = mapdirs(maxino, &tapesize);
 861         }
 862
 863         if (sizest) {
 864                 printf("%.0f\n", ((double)tapesize + 1 + ntrec) * TP_BSIZE);
 865                 exit(X_FINOK);
 866         } /* stop here for size estimate */
 867
 868         if (pipeout || unlimited) {
 869                 tapesize += 1 + ntrec;  /* 1 map header + trailer blocks */
 870                 msg("estimated %ld blocks.\n", tapesize);
 871         } else {
 872                 double fetapes;
 873
 874                 if (blocksperfiles) {
 875                         long tapesize_left;
 876
 877                         tapesize_left = tapesize;
 878                         fetapes = 0;
 879                         for (i = 1; i < *blocksperfiles && tapesize_left; i++) {
 880                                 fetapes++;
 881                                 if (tapesize_left > blocksperfiles[i])
 882                                         tapesize_left -= blocksperfiles[i];
 883                                 else
 884                                         tapesize_left = 0;
 885                         }
 886                         if (tapesize_left)
 887                                 fetapes += (double)tapesize_left / blocksperfiles[*blocksperfiles];
 888                 } else if (cartridge) {
 889                         /* Estimate number of tapes, assuming streaming stops at
 890                            the end of each block written, and not in mid-block.
 891                            Assume no erroneous blocks; this can be compensated
 892                            for with an artificially low tape size. */
 893                         fetapes =
 894                         (         (double) tapesize     /* blocks */
 895                                 * TP_BSIZE      /* bytes/block */
 896                                 * (1.0/density) /* 0.1" / byte " */
 897                           +
 898                                   (double) tapesize     /* blocks */
 899                                 * (1.0/ntrec)   /* streaming-stops per block */
 900                                 * 15.48         /* 0.1" / streaming-stop " */
 901                         ) * (1.0 / tsize );     /* tape / 0.1" " */
 902                 } else {
 903                         /* Estimate number of tapes, for old fashioned 9-track
 904                            tape */
 905                         int tenthsperirg = (density == 625) ? 3 : 7;
 906                         fetapes =
 907                         (         (double) tapesize     /* blocks */
 908                                 * TP_BSIZE      /* bytes / block */
 909                                 * (1.0/density) /* 0.1" / byte " */
 910                           +
 911                                   (double) tapesize     /* blocks */
 912                                 * (1.0/ntrec)   /* IRG's / block */
 913                                 * tenthsperirg  /* 0.1" / IRG " */
 914                         ) * (1.0 / tsize );     /* tape / 0.1" " */
 915                 }
 916                 etapes = fetapes;               /* truncating assignment */
 917                 etapes++;
 918                 /* count the dumped inodes map on each additional tape */
 919                 tapesize += (etapes - 1) *
 920                         (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
 921                 tapesize += etapes + ntrec;     /* headers + trailer blks */
 922                 msg("estimated %ld blocks on %3.2f tape(s).\n",
 923                     tapesize, fetapes);
 924         }
 925
 926 #ifdef USE_QFA
 927         if (tapepos) {
 928                 msg("writing QFA positions to %s\n", gTapeposfile);
 929                 if ((gTapeposfd = open(gTapeposfile,
 930                                        O_WRONLY|O_CREAT|O_TRUNC,
 931                                        S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP
 932                                        | S_IROTH | S_IWOTH)) < 0)
 933                         quit("can't open tapeposfile\n");
 934                 /* print QFA-file header */
 935                 snprintf(gTps, sizeof(gTps), "%s\n%s\n%ld\n\n", QFA_MAGIC, QFA_VERSION, (unsigned long)spcl.c_date);
 936                 gTps[sizeof(gTps) - 1] = '\0';
 937                 if (write(gTapeposfd, gTps, strlen(gTps)) != (ssize_t)strlen(gTps))
 938                         quit("can't write tapeposfile\n");
 939                 sprintf(gTps, "ino\ttapeno\ttapepos\n");
 940                 if (write(gTapeposfd, gTps, strlen(gTps)) != (ssize_t)strlen(gTps))
 941                         quit("can't write tapeposfile\n");
 942         }
 943 #endif /* USE_QFA */
 944
 945         /*
 946          * Allocate tape buffer.
 947          */
 948         if (!alloctape())
 949                 quit(
 950         "can't allocate tape buffers - try a smaller blocking factor.\n");
 951
 952         startnewtape(1);
 953         tstart_writing = time(NULL);
 954         dumpmap(usedinomap, TS_CLRI, maxino - 1);
 955
 956         msg("dumping (Pass III) [directories]\n");
 957         dirty = 0;              /* XXX just to get gcc to shut up */
 958         for (map = dumpdirmap, ino = 1; ino < maxino; ino++) {
 959                 if (((ino - 1) % NBBY) == 0)    /* map is offset by 1 */
 960                         dirty = *map++;
 961                 else
 962                         dirty >>= 1;
 963                 if ((dirty & 1) == 0)
 964                         continue;
 965                 /*
 966                  * Skip directory inodes deleted and maybe reallocated
 967                  */
 968                 dp = getino(ino);
 969                 if ((dp->di_mode & IFMT) != IFDIR)
 970                         continue;
 971 #ifdef  __linux__
 972                 /*
 973                  * Skip directory inodes deleted and not yes reallocated...
 974                  */
 975                 if (dp->di_nlink == 0 || dp->di_dtime != 0)
 976                         continue;
 977                 if (vflag)
 978                         msg("dumping directory inode %lu\n", ino);
 979                 (void)dumpdirino(dp, ino);
 980 #else
 981                 (void)dumpino(dp, ino);
 982 #endif
 983         }
 984
 985         msg("dumping (Pass IV) [regular files]\n");
 986         for (map = dumpinomap, ino = 1; ino < maxino; ino++) {
 987                 if (((ino - 1) % NBBY) == 0)    /* map is offset by 1 */
 988                         dirty = *map++;
 989                 else
 990                         dirty >>= 1;
 991                 if ((dirty & 1) == 0)
 992                         continue;
 993                 /*
 994                  * Skip inodes deleted and reallocated as directories.
 995                  */
 996                 dp = getino(ino);
 997                 if ((dp->di_mode & IFMT) == IFDIR)
 998                         continue;
 999 #ifdef __linux__
1000                 /*
1001                  * No need to check here for deleted and not yet reallocated
1002                  * inodes since this is done in dumpino().
1003                  */
1004 #endif
1005                 if (vflag) {
1006                         if (mflag && TSTINO(ino, metainomap))
1007                                 msg("dumping regular inode %lu (meta only)\n", ino);
1008                         else
1009                                 msg("dumping regular inode %lu\n", ino);
1010                 }
1011                 (void)dumpino(dp, ino, mflag && TSTINO(ino, metainomap));
1012         }
1013
1014         tend_writing = time(NULL);
1015         spcl.c_type = TS_END;
1016
1017         if (Afile >= 0) {
1018                 volinfo[1] = ROOTINO;
1019                 memcpy(spcl.c_inos, volinfo, TP_NINOS * sizeof(dump_ino_t));
1020                 spcl.c_flags |= DR_INODEINFO;
1021         }
1022
1023         /*
1024          * Finish off the current tape record with trailer blocks, to ensure
1025          * at least the data in the last partial record makes it to tape.
1026          * Also make sure we write at least 1 trailer block.
1027          */
1028         for (i = ntrec - (spcl.c_tapea % ntrec); i; --i)
1029                 writeheader(maxino - 1);
1030
1031         tnow = trewind();
1032
1033         if (pipeout || fifoout)
1034                 msg("%ld blocks (%.2fMB)\n", spcl.c_tapea,
1035                         ((double)spcl.c_tapea * TP_BSIZE / 1048576));
1036         else
1037                 msg("%ld blocks (%.2fMB) on %d volume(s)\n",
1038                     spcl.c_tapea,
1039                     ((double)spcl.c_tapea * TP_BSIZE / 1048576),
1040                     spcl.c_volume);
1041
1042         /* report dump performance, avoid division by zero */
1043         if (tend_writing - tstart_writing == 0)
1044                 msg("finished in less than a second\n");
1045         else
1046                 msg("finished in %d seconds, throughput %d kBytes/sec\n",
1047                     tend_writing - tstart_writing,
1048                     spcl.c_tapea / (tend_writing - tstart_writing));
1049
1050         putdumptime();
1051         msg("Date of this level %s dump: %s", level,
1052                 spcl.c_date == 0 ? "the epoch\n" : ctime4(&spcl.c_date));
1053         msg("Date this dump completed:  %s", ctime(&tnow));
1054
1055         msg("Average transfer rate: %ld kB/s\n", xferrate / tapeno);
1056         if (compressed) {
1057                 long tapekb = bytes_written / 1024;
1058                 double rate = .0005 + (double) spcl.c_tapea / tapekb;
1059                 msg("Wrote %ldkB uncompressed, %ldkB compressed, %1.3f:1\n",
1060                         spcl.c_tapea, tapekb, rate);
1061         }
1062
1063         if (Afile >= 0)
1064                 msg("Archiving dump to %s\n", Apath);
1065
1066         broadcast("DUMP IS DONE!\7\7\n");
1067         msg("DUMP IS DONE\n");
1068         Exit(X_FINOK);
1069         /* NOTREACHED */
1070         return 0;       /* gcc - shut up */
1071 }
1072
1073 static void
1074 usage(void)
1075 {
1076         char white[MAXPATHLEN];
1077         const char *ext2ver, *ext2date;
1078
1079         memset(white, ' ', MAXPATHLEN);
1080         white[MIN(strlen(__progname), MAXPATHLEN - 1)] = '\0';
1081
1082 #ifdef __linux__
1083         ext2fs_get_library_version(&ext2ver, &ext2date);
1084         fprintf(stderr, "%s %s (using libext2fs %s of %s)\n",
1085                 __progname, _DUMP_VERSION, ext2ver, ext2date);
1086 #else
1087         fprintf(stderr, "%s %s\n", __progname, _DUMP_VERSION);
1088 #endif
1089         fprintf(stderr,
1090                 "usage:\t%s [-level#] [-ac"
1091 #ifdef KERBEROS
1092                 "k"
1093 #endif
1094                 "mMnqSuv"
1095                 "] [-A file] [-B records] [-b blocksize]\n"
1096                 "\t%s [-d density] [-D file] [-e inode#,inode#,...] [-E file]\n"
1097                 "\t%s [-f file] [-h level] [-I nr errors] "
1098 #ifdef HAVE_BZLIB
1099                 "[-j zlevel] "
1100 #endif
1101 #ifdef USE_QFA
1102                 "[-Q file]\n"
1103 #endif
1104                 "\t%s [-s feet] "
1105                 "[-T date] "
1106 #ifdef HAVE_LZO
1107                 "[-y] "
1108 #endif
1109 #ifdef HAVE_ZLIB
1110                 "[-z zlevel] "
1111 #endif
1112                 "filesystem\n"
1113                 "\t%s [-W | -w]\n",
1114                 __progname, white, white, white, __progname);
1115         exit(X_STARTUP);
1116 }
1117
1118 /*
1119  * Pick up a numeric argument.  It must be nonnegative and in the given
1120  * range (except that a vmax of 0 means unlimited).
1121  */
1122 static long
1123 numarg(const char *meaning, long vmin, long vmax)
1124 {
1125         char *p;
1126         long val;
1127
1128         val = strtol(optarg, &p, 10);
1129         if (*p)
1130                 errx(X_STARTUP, "illegal %s -- %s", meaning, optarg);
1131         if (val < vmin || (vmax && val > vmax))
1132                 errx(X_STARTUP, "%s must be between %ld and %ld", meaning, vmin, vmax);
1133         return (val);
1134 }
1135
1136 /*
1137  * The same as numarg, just that it expects a comma separated list of numbers
1138  * and returns an array of longs with the first element containing the number
1139  * values in that array.
1140  */
1141 static long *
1142 numlistarg(const char *meaning, long vmin, long vmax)
1143 {
1144         char *p;
1145         long *vals,*curval;
1146         long valnum;
1147
1148         p = optarg;
1149         vals = NULL;
1150         valnum = 0;
1151         do {
1152                 valnum++;
1153                 if ( !(vals = realloc(vals, (valnum + 1) * sizeof(*vals))) )
1154                         errx(X_STARTUP, "allocating memory failed");
1155                 curval = vals + valnum;
1156                 *curval = strtol(p, &p, 10);
1157                 if (*p && *p!=',')
1158                         errx(X_STARTUP, "illegal %s -- %s", meaning, optarg);
1159                 if (*curval < vmin || (vmax && *curval > vmax))
1160                         errx(X_STARTUP, "%s must be between %ld and %ld", meaning, vmin, vmax);
1161                 *vals = valnum;
1162                 if (*p) p++;
1163         } while(*p);
1164         return (vals);
1165 }
1166
1167 void
1168 sig(int signo)
1169 {
1170         switch(signo) {
1171         case SIGALRM:
1172         case SIGBUS:
1173         case SIGFPE:
1174         case SIGHUP:
1175         case SIGTERM:
1176         case SIGTRAP:
1177                 if (pipeout || fifoout)
1178                         quit("Signal on pipe: cannot recover\n");
1179                 msg("Rewriting attempted as response to unknown signal: %d.\n", signo);
1180                 (void)fflush(stderr);
1181                 (void)fflush(stdout);
1182                 close_rewind();
1183                 exit(X_REWRITE);
1184                 /* NOTREACHED */
1185         case SIGSEGV:
1186                 msg("SIGSEGV: ABORTING!\n");
1187                 (void)signal(SIGSEGV, SIG_DFL);
1188                 (void)kill(0, SIGSEGV);
1189                 /* NOTREACHED */
1190         }
1191 }
1192
1193 const char *
1194 rawname(const char *cp)
1195 {
1196 #ifdef  __linux__
1197         return cp;
1198 #else   /* __linux__ */
1199         static char rawbuf[MAXPATHLEN];
1200         char *dp = strrchr(cp, '/');
1201
1202         if (dp == NULL)
1203                 return (NULL);
1204         (void)strncpy(rawbuf, cp, min(dp-cp, MAXPATHLEN - 1));
1205         rawbuf[min(dp-cp, MAXPATHLEN-1)] = '\0';
1206         (void)strncat(rawbuf, "/r", MAXPATHLEN - 1 - strlen(rawbuf));
1207         (void)strncat(rawbuf, dp + 1, MAXPATHLEN - 1 - strlen(rawbuf));
1208         return (rawbuf);
1209 #endif  /* __linux__ */
1210 }
1211
1212 /*
1213  * obsolete --
1214  *      Change set of key letters and ordered arguments into something
1215  *      getopt(3) will like.
1216  */
1217 static void
1218 obsolete(int *argcp, char **argvp[])
1219 {
1220         int argc, flags;
1221         char *ap, **argv, *flagsp=NULL, **nargv, *p=NULL;
1222
1223         /* Setup. */
1224         argv = *argvp;
1225         argc = *argcp;
1226
1227         /* Return if no arguments or first argument has leading dash. */
1228         ap = argv[1];
1229         if (argc == 1 || *ap == '-')
1230                 return;
1231
1232         /* Allocate space for new arguments. */
1233         if ((*argvp = nargv = malloc((argc + 1) * sizeof(char *))) == NULL ||
1234             (p = flagsp = malloc(strlen(ap) + 2)) == NULL)
1235                 err(X_STARTUP, "malloc new args");
1236
1237         *nargv++ = *argv;
1238         argv += 2;
1239
1240         for (flags = 0; *ap; ++ap) {
1241                 switch (*ap) {
1242                 case 'A':
1243                 case 'B':
1244                 case 'b':
1245                 case 'd':
1246                 case 'D':
1247                 case 'e':
1248                 case 'E':
1249                 case 'f':
1250                 case 'F':
1251                 case 'h':
1252                 case 'L':
1253                 case 'Q':
1254                 case 's':
1255                 case 'T':
1256                         if (*argv == NULL) {
1257                                 warnx("option requires an argument -- %c", *ap);
1258                                 usage();
1259                         }
1260                         if ((nargv[0] = malloc(strlen(*argv) + 2 + 1)) == NULL)
1261                                 err(X_STARTUP, "malloc arg");
1262                         nargv[0][0] = '-';
1263                         nargv[0][1] = *ap;
1264                         (void)strcpy(&nargv[0][2], *argv);
1265                         ++argv;
1266                         ++nargv;
1267                         break;
1268                 default:
1269                         if (!flags) {
1270                                 *p++ = '-';
1271                                 flags = 1;
1272                         }
1273                         *p++ = *ap;
1274                         break;
1275                 }
1276         }
1277
1278         /* Terminate flags. */
1279         if (flags) {
1280                 *p = '\0';
1281                 *nargv++ = flagsp;
1282         }
1283
1284         /* Copy remaining arguments. */
1285         while ((*nargv++ = *argv++));
1286
1287         /* Update argument count. */
1288         *argcp = nargv - *argvp - 1;
1289 }
1290
1291 /*
1292  * This tests whether an inode is in the exclude bitmap
1293  */
1294 int
1295 exclude_ino(dump_ino_t ino)
1296 {
1297         /* if the inode exclude bitmap exists and covers given inode */
1298         if (iexclude_bitmap && iexclude_bitmap_bytes > ino / 8) {
1299                 /* then check this inode against it */
1300                 int idx = iexclude_bitmap[ino / 8];
1301                 if (idx & (1 << (ino % 8)))
1302                         return 1;
1303         }
1304         return 0;
1305 }
1306
1307 /*
1308  * This adds an inode to the exclusion bitmap if it isn't already there
1309  */
1310 void
1311 do_exclude_ino(dump_ino_t ino, const char *reason)
1312 {
1313         if (exclude_ino(ino))
1314                 return;
1315
1316         if (vflag) {
1317                 if (reason)
1318                         msg("Excluding inode %u (%s) from dump\n", ino, reason);
1319                 else
1320                         msg("Excluding inode %u from dump\n", ino);
1321         }
1322
1323         /* check for enough mem; initialize */
1324         if ((ino/8 + 1) > iexclude_bitmap_bytes) {
1325                 if (iexclude_bitmap_bytes == 0) {
1326                         unsigned int j;
1327                         iexclude_bitmap_bytes = 2 * (ino/8 + 1);
1328                         iexclude_bitmap = (char*) malloc(iexclude_bitmap_bytes);
1329                         if (iexclude_bitmap == NULL) {
1330                                 msg("allocating memory failed\n");
1331                                 exit(X_STARTUP);
1332                         }
1333                         for (j = 0; j < iexclude_bitmap_bytes; j++)
1334                                 iexclude_bitmap[j] = 0;
1335                 }
1336                 else {
1337                         unsigned int oldsize = iexclude_bitmap_bytes;
1338                         iexclude_bitmap_bytes *=
1339                                 (ino / 8 + 1) / iexclude_bitmap_bytes + 1;
1340                         iexclude_bitmap = (char*) realloc(iexclude_bitmap,
1341                                 iexclude_bitmap_bytes);
1342                         if (iexclude_bitmap == NULL) {
1343                                 msg("allocating memory failed\n");
1344                                 exit(X_STARTUP);
1345                         }
1346                         for( ; oldsize < iexclude_bitmap_bytes; oldsize++)
1347                                 iexclude_bitmap[oldsize] = 0;
1348                 }
1349         }
1350
1351         iexclude_bitmap[ino / 8] |= 1 << (ino % 8);
1352 }
1353
1354 static void
1355 do_exclude_ino_str(char * ino) {
1356         char *r;
1357         unsigned long inod;
1358
1359         inod = strtoul(ino, &r, 10);
1360         if (( *r != '\0' && !isspace(*r) ) || inod <= ROOTINO) {
1361                 msg("Invalid inode argument %s\n", ino);
1362                 msg("The ENTIRE dump is aborted.\n");
1363                 exit(X_STARTUP);
1364         }
1365         do_exclude_ino(inod, NULL);
1366 }
1367
1368 /*
1369  * This reads a file containing one inode number per line and exclude them all
1370  */
1371 static void
1372 do_exclude_from_file(char *file) {
1373         FILE *f;
1374         char *p, fname[MAXPATHLEN];
1375
1376
1377         if (!( f = fopen(file, "r")) ) {
1378                 msg("Cannot open file for reading: %s\n", file);
1379                 msg("The ENTIRE dump is aborted.\n");
1380                 exit(X_STARTUP);
1381         }
1382         while (( p = fgets(fname, MAXPATHLEN, f))) {
1383                 if ( *p && *(p + strlen(p) - 1) == '\n' ) /* possible null string */
1384                         *(p + strlen(p) - 1) = '\0';
1385                 if ( !*p ) /* skip empty lines */
1386                         continue;
1387                 do_exclude_ino_str(p);
1388         }
1389         fclose(f);
1390 }
1391
1392 static void incompat_flags(int cond, char flag1, char flag2) {
1393         if (cond) {
1394                 msg("You cannot use the %c and %c flags together.\n",
1395                     flag1, flag2);
1396                 msg("The ENTIRE dump is aborted.\n");
1397                 exit(X_STARTUP);
1398         }
1399 }