dump/main.c

   1 /*
   2  *      Ported to Linux's Second Extended File System as part of the
   3  *      dump and restore backup suit
   4  *      Remy Card <card@Linux.EU.Org>, 1994-1997
   5  *      Stelian Pop <pop@noos.fr>, 1999-2000
   6  *      Stelian Pop <pop@noos.fr> - Alcôve <www.alcove.fr>, 2000
   7  */
   8
   9 /*-
  10  * Copyright (c) 1980, 1991, 1993, 1994
  11  *      The Regents of the University of California.  All rights reserved.
  12  *
  13  * Redistribution and use in source and binary forms, with or without
  14  * modification, are permitted provided that the following conditions
  15  * are met:
  16  * 1. Redistributions of source code must retain the above copyright
  17  *    notice, this list of conditions and the following disclaimer.
  18  * 2. Redistributions in binary form must reproduce the above copyright
  19  *    notice, this list of conditions and the following disclaimer in the
  20  *    documentation and/or other materials provided with the distribution.
  21  * 3. All advertising materials mentioning features or use of this software
  22  *    must display the following acknowledgement:
  23  *      This product includes software developed by the University of
  24  *      California, Berkeley and its contributors.
  25  * 4. Neither the name of the University nor the names of its contributors
  26  *    may be used to endorse or promote products derived from this software
  27  *    without specific prior written permission.
  28  *
  29  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  30  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  31  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  32  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  33  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  34  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  35  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  36  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  37  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  38  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  39  * SUCH DAMAGE.
  40  */
  41
  42 #ifndef lint
  43 static const char rcsid[] =
  44         "$Id: main.c,v 1.58 2001/08/16 13:12:30 stelian Exp $";
  45 #endif /* not lint */
  46
  47 #include <config.h>
  48 #include <compatlfs.h>
  49 #include <ctype.h>
  50 #include <compaterr.h>
  51 #include <fcntl.h>
  52 #include <fstab.h>
  53 #include <signal.h>
  54 #include <stdio.h>
  55 #include <stdlib.h>
  56 #include <string.h>
  57 #include <unistd.h>
  58
  59 #include <sys/param.h>
  60 #include <sys/time.h>
  61 #include <time.h>
  62 #ifdef __linux__
  63 #ifdef HAVE_EXT2FS_EXT2_FS_H
  64 #include <ext2fs/ext2_fs.h>
  65 #else
  66 #include <linux/ext2_fs.h>
  67 #endif
  68 #include <ext2fs/ext2fs.h>
  69 #include <sys/stat.h>
  70 #include <bsdcompat.h>
  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 /*
  92  * Dump maps used to describe what is to be dumped.
  93  */
  94 int     mapsize;        /* size of the state maps */
  95 char    *usedinomap;    /* map of allocated inodes */
  96 char    *dumpdirmap;    /* map of directories to be dumped */
  97 char    *dumpinomap;    /* map of files to be dumped */
  98
  99 const char *disk;       /* name of the disk file */
 100 char    tape[MAXPATHLEN];/* name of the tape file */
 101 char    *tapeprefix;    /* prefix of the tape file */
 102 char    *dumpdates;     /* name of the file containing dump date information*/
 103 char    lastlevel;      /* dump level of previous dump */
 104 char    level;          /* dump level of this dump */
 105 int     uflag;          /* update flag */
 106 int     Mflag;          /* multi-volume flag */
 107 int     qflag;          /* quit on errors flag */
 108 char    *eot_script;    /* end of volume script fiag */
 109 int     diskfd;         /* disk file descriptor */
 110 int     tapefd;         /* tape file descriptor */
 111 int     pipeout;        /* true => output to standard output */
 112 int     fifoout;        /* true => output to fifo */
 113 dump_ino_t curino;      /* current inumber; used globally */
 114 int     newtape;        /* new tape flag */
 115 int     density;        /* density in 0.1" units */
 116 long    tapesize;       /* estimated tape size, blocks */
 117 long    tsize;          /* tape size in 0.1" units */
 118 long    asize;          /* number of 0.1" units written on current tape */
 119 int     etapes;         /* estimated number of tapes */
 120 int     nonodump;       /* if set, do not honor UF_NODUMP user flags */
 121 int     unlimited;      /* if set, write to end of medium */
 122 int     compressed;     /* if set, dump is to be compressed */
 123 long long bytes_written;/* total bytes written to tape */
 124 long    uncomprblks;    /* uncompressed blocks written to tape */
 125 int     notify;         /* notify operator flag */
 126 int     blockswritten;  /* number of blocks written on current tape */
 127 int     tapeno;         /* current tape number */
 128 time_t  tstart_writing; /* when started writing the first tape block */
 129 time_t  tend_writing;   /* after writing the last tape block */
 130 #ifdef __linux__
 131 ext2_filsys fs;
 132 #else
 133 struct  fs *sblock;     /* the file system super block */
 134 char    sblock_buf[MAXBSIZE];
 135 #endif
 136 long    xferrate;       /* averaged transfer rate of all volumes */
 137 long    dev_bsize;      /* block size of underlying disk device */
 138 int     dev_bshift;     /* log2(dev_bsize) */
 139 int     tp_bshift;      /* log2(TP_BSIZE) */
 140
 141 #ifdef USE_QFA
 142 int     gTapeposfd;
 143 char    *gTapeposfile;
 144 char    gTps[255];
 145 int32_t gThisDumpDate;
 146 #endif /* USE_QFA */
 147
 148 struct  dumptime *dthead;       /* head of the list version */
 149 int     nddates;                /* number of records (might be zero) */
 150 int     ddates_in;              /* we have read the increment file */
 151 struct  dumpdates **ddatev;     /* the arrayfied version */
 152
 153 int     notify = 0;     /* notify operator flag */
 154 int     blockswritten = 0;      /* number of blocks written on current tape */
 155 int     tapeno = 0;     /* current tape number */
 156 int     density = 0;    /* density in bytes/0.1" " <- this is for hilit19 */
 157 int     ntrec = NTREC;  /* # tape blocks in each tape record */
 158 int     cartridge = 0;  /* Assume non-cartridge tape */
 159 #ifdef USE_QFA
 160 int     tapepos = 0;    /* assume no QFA tapeposition needed by user */
 161 #endif /* USE_QFA */
 162 int     dokerberos = 0; /* Use Kerberos authentication */
 163 long    dev_bsize = 1;  /* recalculated below */
 164 long    blocksperfile;  /* output blocks per file */
 165 char    *host = NULL;   /* remote host (if any) */
 166 int     sizest = 0;     /* return size estimate only */
 167 int     compressed = 0; /* use zlib to compress the output, compress level 1-9 */
 168 long long bytes_written = 0; /* total bytes written */
 169 long    uncomprblks = 0;/* uncompressed blocks written */
 170
 171 #ifdef  __linux__
 172 char    *__progname;
 173 #endif
 174
 175 int     maxbsize = 64*1024;     /* XXX MAXBSIZE from sys/param.h */
 176 static long numarg __P((const char *, long, long));
 177 static void obsolete __P((int *, char **[]));
 178 static void usage __P((void));
 179 static void do_exclude_from_file __P((char *));
 180 static void do_exclude_ino_str __P((char *));
 181 static void incompat_flags __P((int, char, char));
 182
 183 static dump_ino_t iexclude_list[IEXCLUDE_MAXNUM];/* the inode exclude list */
 184 static int iexclude_num = 0;                    /* number of elements in the list */
 185
 186 int
 187 main(int argc, char *argv[])
 188 {
 189         register dump_ino_t ino;
 190         register int dirty;
 191         register struct dinode *dp;
 192         register struct fstab *dt;
 193         register char *map;
 194         register int ch;
 195         int i, anydirskipped;
 196         int aflag = 0, bflag = 0, Tflag = 0, honorlevel = 1;
 197         dump_ino_t maxino;
 198         struct STAT statbuf;
 199         dev_t filedev = 0;
 200 #ifdef  __linux__
 201         errcode_t retval;
 202         char directory[MAXPATHLEN];
 203         char pathname[MAXPATHLEN];
 204 #endif
 205         time_t tnow;
 206         char *diskparam;
 207
 208         spcl.c_label[0] = '\0';
 209         spcl.c_date = time(NULL);
 210
 211 #ifdef __linux__
 212         __progname = argv[0];
 213         directory[0] = 0;
 214         initialize_ext2_error_table();
 215 #endif
 216
 217         tsize = 0;      /* Default later, based on 'c' option for cart tapes */
 218         unlimited = 1;
 219         eot_script = NULL;
 220         if ((tapeprefix = getenv("TAPE")) == NULL)
 221                 tapeprefix = _PATH_DEFTAPE;
 222         dumpdates = _PATH_DUMPDATES;
 223         if (TP_BSIZE / DEV_BSIZE == 0 || TP_BSIZE % DEV_BSIZE != 0)
 224                 quit("TP_BSIZE must be a multiple of DEV_BSIZE\n");
 225         level = '0';
 226
 227         if (argc < 2)
 228                 usage();
 229
 230         obsolete(&argc, &argv);
 231
 232 #ifdef USE_QFA
 233         gTapeposfd = -1;
 234 #endif /* USE_QFA */
 235
 236         while ((ch = getopt(argc, argv,
 237                             "0123456789aB:b:cd:e:E:f:F:h:L:"
 238 #ifdef KERBEROS
 239                             "k"
 240 #endif
 241                             "Mnq"
 242 #ifdef USE_QFA
 243                             "Q:"
 244 #endif
 245                             "s:ST:uWw"
 246 #ifdef HAVE_ZLIB
 247                             "z::"
 248 #endif
 249                             )) != -1)
 250                 switch (ch) {
 251                 /* dump level */
 252                 case '0': case '1': case '2': case '3': case '4':
 253                 case '5': case '6': case '7': case '8': case '9':
 254                         level = ch;
 255                         break;
 256
 257                 case 'a':               /* `auto-size', Write to EOM. */
 258                         unlimited = 1;
 259                         aflag = 1;
 260                         break;
 261
 262                 case 'B':               /* blocks per output file */
 263                         unlimited = 0;
 264                         blocksperfile = numarg("number of blocks per file",
 265                             1L, 0L);
 266                         break;
 267
 268                 case 'b':               /* blocks per tape write */
 269                         ntrec = numarg("number of blocks per write",
 270                             1L, 1000L);
 271                         if (ntrec > maxbsize/1024) {
 272                                 msg("Please choose a blocksize <= %dkB\n",
 273                                         maxbsize/1024);
 274                                 msg("The ENTIRE dump is aborted.\n");
 275                                 exit(X_STARTUP);
 276                         }
 277                         bflag = 1;
 278                         break;
 279
 280                 case 'c':               /* Tape is cart. not 9-track */
 281                         unlimited = 0;
 282                         cartridge = 1;
 283                         break;
 284
 285                 case 'd':               /* density, in bits per inch */
 286                         unlimited = 0;
 287                         density = numarg("density", 10L, 327670L) / 10;
 288                         if (density >= 625 && !bflag)
 289                                 ntrec = HIGHDENSITYTREC;
 290                         break;
 291
 292                                         /* 04-Feb-00 ILC */
 293                 case 'e':               /* exclude an inode */
 294                         {
 295                         char *p = optarg, *q;
 296                         while ((q = strchr(p, ','))) {
 297                                 *q = '\0';
 298                                 do_exclude_ino_str(p);
 299                                 p = q + 1;
 300                         }
 301                         do_exclude_ino_str(p);
 302                         }
 303                         break;
 304
 305                 case 'E':               /* exclude inodes read from file */
 306                         do_exclude_from_file(optarg);
 307                         break;
 308
 309                 case 'f':               /* output file */
 310                         tapeprefix = optarg;
 311                         break;
 312
 313                 case 'F':               /* end of tape script */
 314                         eot_script = optarg;
 315                         break;
 316
 317                 case 'h':
 318                         honorlevel = numarg("honor level", 0L, 10L);
 319                         break;
 320
 321 #ifdef KERBEROS
 322                 case 'k':
 323                         dokerberos = 1;
 324                         break;
 325 #endif
 326
 327                 case 'L':
 328                         /*
 329                          * Note that although there are LBLSIZE characters,
 330                          * the last must be '\0', so the limit on strlen()
 331                          * is really LBLSIZE-1.
 332                          */
 333                         strncpy(spcl.c_label, optarg, LBLSIZE);
 334                         spcl.c_label[LBLSIZE-1] = '\0';
 335                         if (strlen(optarg) > LBLSIZE-1) {
 336                                 msg(
 337                 "WARNING Label `%s' is larger than limit of %d characters.\n",
 338                                     optarg, LBLSIZE-1);
 339                                 msg("WARNING: Using truncated label `%s'.\n",
 340                                     spcl.c_label);
 341                         }
 342                         break;
 343
 344                 case 'M':               /* multi-volume flag */
 345                         Mflag = 1;
 346                         break;
 347
 348                 case 'n':               /* notify operators */
 349                         notify = 1;
 350                         break;
 351
 352                 case 'q':
 353                         qflag = 1;
 354                         break;
 355
 356 #ifdef USE_QFA
 357                 case 'Q':               /* create tapeposfile */
 358                         gTapeposfile = optarg;
 359                         tapepos = 1;
 360                         break;
 361 #endif /* USE_QFA */
 362
 363                 case 's':               /* tape size, feet */
 364                         unlimited = 0;
 365                         tsize = numarg("tape size", 1L, 0L) * 12 * 10;
 366                         break;
 367
 368                 case 'S':
 369                         sizest = 1;     /* return size estimate only */
 370                         break;
 371
 372                 case 'T':               /* time of last dump */
 373                         spcl.c_ddate = unctime(optarg);
 374                         if (spcl.c_ddate < 0) {
 375                                 msg("bad time \"%s\"\n", optarg);
 376                                 msg("The ENTIRE dump is aborted.\n");
 377                                 exit(X_STARTUP);
 378                         }
 379                         Tflag = 1;
 380                         lastlevel = '?';
 381                         break;
 382
 383                 case 'u':               /* update dumpdates */
 384                         uflag = 1;
 385                         break;
 386
 387                 case 'W':               /* what to do */
 388                 case 'w':
 389                         lastdump(ch);
 390                         exit(X_FINOK);  /* do nothing else */
 391 #ifdef HAVE_ZLIB
 392                 case 'z':
 393                         compressed = 2;
 394                         if (optarg)
 395                                 compressed = numarg("compress level", 1L, 9L);
 396                         break;
 397 #endif /* HAVE_ZLIB */
 398
 399                 default:
 400                         usage();
 401                 }
 402         argc -= optind;
 403         argv += optind;
 404
 405         if (argc < 1) {
 406                 msg("Must specify disk or filesystem\n");
 407                 msg("The ENTIRE dump is aborted.\n");
 408                 exit(X_STARTUP);
 409         }
 410         diskparam = *argv++;
 411         if (strlen(diskparam) >= MAXPATHLEN) {
 412                 msg("Disk or filesystem name too long: %s\n", diskparam);
 413                 msg("The ENTIRE dump is aborted.\n");
 414                 exit(X_STARTUP);
 415         }
 416         argc--;
 417         incompat_flags(Tflag && uflag, 'T', 'u');
 418         incompat_flags(aflag && blocksperfile, 'a', 'B');
 419         incompat_flags(aflag && cartridge, 'a', 'c');
 420         incompat_flags(aflag && density, 'a', 'd');
 421         incompat_flags(aflag && tsize, 'a', 's');
 422
 423         if (strcmp(tapeprefix, "-") == 0) {
 424                 pipeout++;
 425                 tapeprefix = "standard output";
 426         }
 427
 428         if (blocksperfile && !compressed)
 429                 blocksperfile = blocksperfile / ntrec * ntrec; /* round down */
 430         else if (!unlimited) {
 431                 /*
 432                  * Determine how to default tape size and density
 433                  *
 434                  *              density                         tape size
 435                  * 9-track      1600 bpi (160 bytes/.1")        2300 ft.
 436                  * 9-track      6250 bpi (625 bytes/.1")        2300 ft.
 437                  * cartridge    8000 bpi (100 bytes/.1")        1700 ft.
 438                  *                                              (450*4 - slop)
 439                  * hilit19 hits again: "
 440                  */
 441                 if (density == 0)
 442                         density = cartridge ? 100 : 160;
 443                 if (tsize == 0)
 444                         tsize = cartridge ? 1700L*120L : 2300L*120L;
 445         }
 446
 447         if (strchr(tapeprefix, ':')) {
 448                 host = tapeprefix;
 449                 tapeprefix = strchr(host, ':');
 450                 *tapeprefix++ = '\0';
 451 #ifdef RDUMP
 452                 if (index(tapeprefix, '\n')) {
 453                         msg("invalid characters in tape\n");
 454                         msg("The ENTIRE dump is aborted.\n");
 455                         exit(X_STARTUP);
 456                 }
 457                 if (rmthost(host) == 0)
 458                         exit(X_STARTUP);
 459 #else
 460                 msg("remote dump not enabled\n");
 461                 msg("The ENTIRE dump is aborted.\n");
 462                 exit(X_STARTUP);
 463 #endif
 464         }
 465         (void)setuid(getuid()); /* rmthost() is the only reason to be setuid */
 466
 467         if (signal(SIGHUP, SIG_IGN) != SIG_IGN)
 468                 signal(SIGHUP, sig);
 469         if (signal(SIGTRAP, SIG_IGN) != SIG_IGN)
 470                 signal(SIGTRAP, sig);
 471         if (signal(SIGFPE, SIG_IGN) != SIG_IGN)
 472                 signal(SIGFPE, sig);
 473         if (signal(SIGBUS, SIG_IGN) != SIG_IGN)
 474                 signal(SIGBUS, sig);
 475         if (signal(SIGSEGV, SIG_IGN) != SIG_IGN)
 476                 signal(SIGSEGV, sig);
 477         if (signal(SIGTERM, SIG_IGN) != SIG_IGN)
 478                 signal(SIGTERM, sig);
 479         if (signal(SIGINT, interrupt) == SIG_IGN)
 480                 signal(SIGINT, SIG_IGN);
 481         set_operators();        /* /etc/group snarfed */
 482         getfstab();             /* /etc/fstab snarfed */
 483
 484         /*
 485          *      disk may end in / and this can confuse
 486          *      fstabsearch.
 487          */
 488         i = strlen(diskparam) - 1;
 489         if (i > 1 && diskparam[i] == '/')
 490                 diskparam[i] = '\0';
 491
 492         disk = get_device_name(diskparam);
 493         if (!disk) {            /* null means the disk is some form
 494                                    of LABEL= or UID= but it was not
 495                                    found */
 496                 msg("Cannot find a disk having %s\n", diskparam);
 497                 msg("The ENTIRE dump is aborted.\n");
 498                 exit(X_STARTUP);
 499         }
 500         /*
 501          *      disk can be either the full special file name,
 502          *      the suffix of the special file name,
 503          *      the special name missing the leading '/',
 504          *      the file system name with or without the leading '/'.
 505          */
 506         if ((dt = fstabsearch(disk)) != NULL) {
 507                 /* if found then only one parameter (i.e. partition)
 508                  * is allowed */
 509                 if (argc >= 1) {
 510                         (void)fprintf(stderr, "Unknown arguments to dump:");
 511                         while (argc--)
 512                                 (void)fprintf(stderr, " %s", *argv++);
 513                         (void)fprintf(stderr, "\n");
 514                         msg("The ENTIRE dump is aborted.\n");
 515                         exit(X_STARTUP);
 516                 }
 517                 disk = rawname(dt->fs_spec);
 518                 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
 519                 (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN);
 520         } else {
 521 #ifdef  __linux__
 522 #ifdef  HAVE_REALPATH
 523                 if (realpath(disk, pathname) == NULL)
 524 #endif
 525                         strcpy(pathname, disk);
 526                 /*
 527                  * The argument could be now a mountpoint of
 528                  * a filesystem specified in fstab. Search for it.
 529                  */
 530                 if ((dt = fstabsearch(pathname)) != NULL) {
 531                         disk = rawname(dt->fs_spec);
 532                         (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
 533                         (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN);
 534                 } else {
 535                         /*
 536                          * The argument was not found in the fstab
 537                          * assume that this is a subtree and search for it
 538                          */
 539                         dt = fstabsearchdir(pathname, directory);
 540                         if (dt != NULL) {
 541                                 char name[MAXPATHLEN];
 542                                 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
 543                                 (void)snprintf(name, sizeof(name), "%s (dir %s)",
 544                                               dt->fs_file, directory);
 545                                 (void)strncpy(spcl.c_filesys, name, NAMELEN);
 546                                 disk = rawname(dt->fs_spec);
 547                         } else {
 548                                 (void)strncpy(spcl.c_dev, disk, NAMELEN);
 549                                 (void)strncpy(spcl.c_filesys, "an unlisted file system",
 550                                     NAMELEN);
 551                         }
 552                 }
 553 #else
 554                 (void)strncpy(spcl.c_dev, disk, NAMELEN);
 555                 (void)strncpy(spcl.c_filesys, "an unlisted file system",
 556                     NAMELEN);
 557 #endif
 558         }
 559
 560         if (directory[0] != 0) {
 561                 if (level != '0') {
 562                         msg("Only level 0 dumps are allowed on a subdirectory\n");
 563                         msg("The ENTIRE dump is aborted.\n");
 564                         exit(X_STARTUP);
 565                 }
 566                 if (uflag) {
 567                         msg("You can't update the dumpdates file when dumping a subdirectory\n");
 568                         msg("The ENTIRE dump is aborted.\n");
 569                         exit(X_STARTUP);
 570                 }
 571         }
 572         spcl.c_dev[NAMELEN-1] = '\0';
 573         spcl.c_filesys[NAMELEN-1] = '\0';
 574         (void)gethostname(spcl.c_host, NAMELEN);
 575         spcl.c_host[NAMELEN-1] = '\0';
 576         spcl.c_level = level - '0';
 577         spcl.c_type = TS_TAPE;
 578         if (!Tflag)
 579                 getdumptime(uflag);             /* dumpdates snarfed */
 580
 581         if (spcl.c_ddate == 0 && spcl.c_level) {
 582                 msg("WARNING: There is no inferior level dump on this filesystem\n");
 583                 msg("WARNING: Assuming a level 0 dump by default\n");
 584                 level = '0';
 585                 spcl.c_level = 0;
 586         }
 587
 588         if (Mflag)
 589                 snprintf(tape, MAXPATHLEN, "%s%03d", tapeprefix, tapeno + 1);
 590         else
 591                 strncpy(tape, tapeprefix, MAXPATHLEN);
 592         tape[MAXPATHLEN - 1] = '\0';
 593
 594         if (!pipeout) {
 595                 if (STAT(tape, &statbuf) != -1)
 596                         fifoout= statbuf.st_mode & S_IFIFO;
 597         }
 598
 599         if (!sizest) {
 600
 601                 msg("Date of this level %c dump: %s", level,
 602                     ctime4(&spcl.c_date));
 603 #ifdef USE_QFA
 604                 gThisDumpDate = spcl.c_date;
 605 #endif
 606                 if (spcl.c_ddate)
 607                         msg("Date of last level %c dump: %s", lastlevel,
 608                             ctime4(&spcl.c_ddate));
 609                 msg("Dumping %s (%s) ", disk, spcl.c_filesys);
 610                 if (host)
 611                         msgtail("to %s on host %s\n", tape, host);
 612                 else
 613                         msgtail("to %s\n", tape);
 614         } /* end of size estimate */
 615
 616 #ifdef  __linux__
 617         retval = dump_fs_open(disk, &fs);
 618         if (retval) {
 619                 com_err(disk, retval, "while opening filesystem");
 620                 if (retval == EXT2_ET_REV_TOO_HIGH)
 621                         msg("Get a newer version of dump!\n");
 622                 msg("The ENTIRE dump is aborted.\n");
 623                 exit(X_STARTUP);
 624         }
 625         if (fs->super->s_rev_level > DUMP_CURRENT_REV) {
 626                 com_err(disk, retval, "while opening filesystem");
 627                 msg("Get a newer version of dump!\n");
 628                 msg("The ENTIRE dump is aborted.\n");
 629                 exit(X_STARTUP);
 630         }
 631         if ((diskfd = OPEN(disk, O_RDONLY)) < 0) {
 632                 msg("Cannot open %s\n", disk);
 633                 msg("The ENTIRE dump is aborted.\n");
 634                 exit(X_STARTUP);
 635         }
 636         /* if no user label specified, use ext2 filesystem label if available */
 637         if (spcl.c_label[0] == '\0') {
 638                 const char *lbl;
 639                 if ( (lbl = get_device_label(disk)) != NULL) {
 640                         strncpy(spcl.c_label, lbl, LBLSIZE);
 641                         spcl.c_label[LBLSIZE-1] = '\0';
 642                 }
 643                 else
 644                         strcpy(spcl.c_label, "none");   /* safe strcpy. */
 645         }
 646         sync();
 647         dev_bsize = DEV_BSIZE;
 648         dev_bshift = ffs(dev_bsize) - 1;
 649         if (dev_bsize != (1 << dev_bshift))
 650                 quit("dev_bsize (%d) is not a power of 2", dev_bsize);
 651         tp_bshift = ffs(TP_BSIZE) - 1;
 652         if (TP_BSIZE != (1 << tp_bshift))
 653                 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
 654         maxino = fs->super->s_inodes_count;
 655 #if     0
 656         spcl.c_flags |= DR_NEWINODEFMT;
 657 #endif
 658 #else   /* __linux __*/
 659         if ((diskfd = open(disk, O_RDONLY)) < 0) {
 660                 msg("Cannot open %s\n", disk);
 661                 msg("The ENTIRE dump is aborted.\n");
 662                 exit(X_STARTUP);
 663         }
 664         sync();
 665         sblock = (struct fs *)sblock_buf;
 666         bread(SBOFF, (char *) sblock, SBSIZE);
 667         if (sblock->fs_magic != FS_MAGIC)
 668                 quit("bad sblock magic number\n");
 669         dev_bsize = sblock->fs_fsize / fsbtodb(sblock, 1);
 670         dev_bshift = ffs(dev_bsize) - 1;
 671         if (dev_bsize != (1 << dev_bshift))
 672                 quit("dev_bsize (%d) is not a power of 2", dev_bsize);
 673         tp_bshift = ffs(TP_BSIZE) - 1;
 674         if (TP_BSIZE != (1 << tp_bshift))
 675                 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
 676 #ifdef FS_44INODEFMT
 677         if (sblock->fs_inodefmt >= FS_44INODEFMT)
 678                 spcl.c_flags |= DR_NEWINODEFMT;
 679 #endif
 680         maxino = sblock->fs_ipg * sblock->fs_ncg;
 681 #endif  /* __linux__ */
 682         mapsize = roundup(howmany(maxino, NBBY), TP_BSIZE);
 683         usedinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
 684         dumpdirmap = (char *)calloc((unsigned) mapsize, sizeof(char));
 685         dumpinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
 686         if (usedinomap == NULL || dumpdirmap == NULL || dumpinomap == NULL)
 687                 quit("out of memory allocating inode maps\n");
 688         tapesize = 2 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
 689
 690         nonodump = spcl.c_level < honorlevel;
 691
 692         if (!sizest) {
 693                 msg("Label: %s\n", spcl.c_label);
 694
 695                 if (compressed)
 696                         msg("Compressing output at compression level %d\n",
 697                             compressed);
 698         }
 699
 700 #if defined(SIGINFO)
 701         (void)signal(SIGINFO, statussig);
 702 #endif
 703
 704         if (!sizest)
 705                 msg("mapping (Pass I) [regular files]\n");
 706 #ifdef  __linux__
 707         if (directory[0] == 0)
 708                 anydirskipped = mapfiles(maxino, &tapesize);
 709         else {
 710                 if (STAT(pathname, &statbuf) == -1) {
 711                         msg("File cannot be accessed (%s).\n", pathname);
 712                         msg("The ENTIRE dump is aborted.\n");
 713                         exit(X_STARTUP);
 714                 }
 715                 filedev = statbuf.st_dev;
 716                 if (!(statbuf.st_mode & S_IFDIR))       /* is a file */
 717                         anydirskipped = maponefile(maxino, &tapesize,
 718                                                    directory);
 719                 else
 720                         anydirskipped = mapfilesfromdir(maxino, &tapesize,
 721                                                         directory);
 722         }
 723         while (argc--) {
 724                 int anydirskipped2;
 725                 char *p = *argv;
 726                 /* check if file is available */
 727                 if (STAT(p, &statbuf) == -1) {
 728                         msg("File cannot be accessed (%s).\n", p);
 729                         msg("The ENTIRE dump is aborted.\n");
 730                         exit(X_STARTUP);
 731                 }
 732                 /* check if file is on same unix partiton as the first
 733                  * argument */
 734                 if (statbuf.st_dev != filedev) {
 735                         msg("Files are not on same file system (%s).\n", p);
 736                         msg("The ENTIRE dump is aborted.\n");
 737                         exit(X_STARTUP);
 738                 }
 739                 /* check if file is a directory */
 740                 if (!(statbuf.st_mode & S_IFDIR))
 741                         anydirskipped2 = maponefile(maxino, &tapesize,
 742                                                     p+strlen(dt->fs_file));
 743                 else
 744                         /* read directory inodes.
 745                          * NOTE: nested directories are not recognized
 746                          * so inodes may be umped twice!
 747                          */
 748                         anydirskipped2 = mapfilesfromdir(maxino, &tapesize,
 749                                                          p+strlen(dt->fs_file));
 750                 if (!anydirskipped)
 751                         anydirskipped = anydirskipped2;
 752                 argv++;
 753         }
 754 #else
 755         anydirskipped = mapfiles(maxino, &tapesize);
 756 #endif
 757
 758         if (!sizest)
 759                 msg("mapping (Pass II) [directories]\n");
 760         while (anydirskipped) {
 761                 anydirskipped = mapdirs(maxino, &tapesize);
 762         }
 763
 764         if (sizest) {
 765                 printf("%.0f\n", ((double)tapesize + 1 + ntrec) * TP_BSIZE);
 766                 exit(X_FINOK);
 767         } /* stop here for size estimate */
 768
 769         if (pipeout || unlimited) {
 770                 tapesize += 1 + ntrec;  /* 1 map header + trailer blocks */
 771                 msg("estimated %ld tape blocks.\n", tapesize);
 772         } else {
 773                 double fetapes;
 774
 775                 if (blocksperfile)
 776                         fetapes = (double) tapesize / blocksperfile;
 777                 else if (cartridge) {
 778                         /* Estimate number of tapes, assuming streaming stops at
 779                            the end of each block written, and not in mid-block.
 780                            Assume no erroneous blocks; this can be compensated
 781                            for with an artificially low tape size. */
 782                         fetapes =
 783                         (         (double) tapesize     /* blocks */
 784                                 * TP_BSIZE      /* bytes/block */
 785                                 * (1.0/density) /* 0.1" / byte " */
 786                           +
 787                                   (double) tapesize     /* blocks */
 788                                 * (1.0/ntrec)   /* streaming-stops per block */
 789                                 * 15.48         /* 0.1" / streaming-stop " */
 790                         ) * (1.0 / tsize );     /* tape / 0.1" " */
 791                 } else {
 792                         /* Estimate number of tapes, for old fashioned 9-track
 793                            tape */
 794                         int tenthsperirg = (density == 625) ? 3 : 7;
 795                         fetapes =
 796                         (         (double) tapesize     /* blocks */
 797                                 * TP_BSIZE      /* bytes / block */
 798                                 * (1.0/density) /* 0.1" / byte " */
 799                           +
 800                                   (double) tapesize     /* blocks */
 801                                 * (1.0/ntrec)   /* IRG's / block */
 802                                 * tenthsperirg  /* 0.1" / IRG " */
 803                         ) * (1.0 / tsize );     /* tape / 0.1" " */
 804                 }
 805                 etapes = fetapes;               /* truncating assignment */
 806                 etapes++;
 807                 /* count the dumped inodes map on each additional tape */
 808                 tapesize += (etapes - 1) *
 809                         (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
 810                 tapesize += etapes + ntrec;     /* headers + trailer blks */
 811                 msg("estimated %ld tape blocks on %3.2f tape(s).\n",
 812                     tapesize, fetapes);
 813         }
 814
 815 #ifdef USE_QFA
 816         if (tapepos) {
 817                 msg("writing QFA positions to %s\n", gTapeposfile);
 818                 if ((gTapeposfd = open(gTapeposfile, O_RDWR|O_CREAT, S_IRUSR | S_IWUSR)) < 0)
 819                         quit("can't open tapeposfile\n");
 820                 /* print QFA-file header */
 821                 sprintf(gTps, "%s\n%s\n%ld\n\n", QFA_MAGIC, QFA_VERSION, (unsigned long)spcl.c_date);
 822                 if (write(gTapeposfd, gTps, strlen(gTps)) != strlen(gTps))
 823                         quit("can't write tapeposfile\n");
 824                 sprintf(gTps, "ino\ttapeno\ttapepos\n");
 825                 if (write(gTapeposfd, gTps, strlen(gTps)) != strlen(gTps))
 826                         quit("can't write tapeposfile\n");
 827         }
 828 #endif /* USE_QFA */
 829
 830         /*
 831          * Allocate tape buffer.
 832          */
 833         if (!alloctape())
 834                 quit(
 835         "can't allocate tape buffers - try a smaller blocking factor.\n");
 836
 837         startnewtape(1);
 838         tstart_writing = time(NULL);
 839         dumpmap(usedinomap, TS_CLRI, maxino - 1);
 840
 841         msg("dumping (Pass III) [directories]\n");
 842         dirty = 0;              /* XXX just to get gcc to shut up */
 843         for (map = dumpdirmap, ino = 1; ino < maxino; ino++) {
 844                 if (((ino - 1) % NBBY) == 0)    /* map is offset by 1 */
 845                         dirty = *map++;
 846                 else
 847                         dirty >>= 1;
 848                 if ((dirty & 1) == 0)
 849                         continue;
 850                 /*
 851                  * Skip directory inodes deleted and maybe reallocated
 852                  */
 853                 dp = getino(ino);
 854                 if ((dp->di_mode & IFMT) != IFDIR)
 855                         continue;
 856 #ifdef  __linux__
 857                 /*
 858                  * Skip directory inodes deleted and not yes reallocated...
 859                  */
 860                 if (dp->di_nlink == 0 || dp->di_dtime != 0)
 861                         continue;
 862                 (void)dumpdirino(dp, ino);
 863 #else
 864                 (void)dumpino(dp, ino);
 865 #endif
 866         }
 867
 868         msg("dumping (Pass IV) [regular files]\n");
 869         for (map = dumpinomap, ino = 1; ino < maxino; ino++) {
 870                 if (((ino - 1) % NBBY) == 0)    /* map is offset by 1 */
 871                         dirty = *map++;
 872                 else
 873                         dirty >>= 1;
 874                 if ((dirty & 1) == 0)
 875                         continue;
 876                 /*
 877                  * Skip inodes deleted and reallocated as directories.
 878                  */
 879                 dp = getino(ino);
 880                 if ((dp->di_mode & IFMT) == IFDIR)
 881                         continue;
 882 #ifdef __linux__
 883                 /*
 884                  * No need to check here for deleted and not yet reallocated
 885                  * inodes since this is done in dumpino().
 886                  */
 887 #endif
 888                 (void)dumpino(dp, ino);
 889         }
 890
 891         tend_writing = time(NULL);
 892         spcl.c_type = TS_END;
 893         /*
 894          * Finish off the current tape record with trailer blocks, to ensure
 895          * at least the data in the last partial record makes it to tape.
 896          * Also make sure we write at least 1 trailer block.
 897          */
 898         for (i = ntrec - (spcl.c_tapea % ntrec); i; --i)
 899                 writeheader(maxino - 1);
 900
 901         tnow = trewind();
 902
 903         if (pipeout || fifoout)
 904                 msg("%ld tape blocks (%.2fMB)\n", spcl.c_tapea,
 905                         ((double)spcl.c_tapea * TP_BSIZE / 1048576));
 906         else
 907                 msg("%ld tape blocks (%.2fMB) on %d volume(s)\n",
 908                     spcl.c_tapea,
 909                     ((double)spcl.c_tapea * TP_BSIZE / 1048576),
 910                     spcl.c_volume);
 911
 912         /* report dump performance, avoid division by zero */
 913         if (tend_writing - tstart_writing == 0)
 914                 msg("finished in less than a second\n");
 915         else
 916                 msg("finished in %d seconds, throughput %d kBytes/sec\n",
 917                     tend_writing - tstart_writing,
 918                     spcl.c_tapea / (tend_writing - tstart_writing));
 919
 920         putdumptime();
 921         msg("Date of this level %c dump: %s", level,
 922                 spcl.c_date == 0 ? "the epoch\n" : ctime4(&spcl.c_date));
 923         msg("Date this dump completed:  %s", ctime(&tnow));
 924
 925         msg("Average transfer rate: %ld kB/s\n", xferrate / tapeno);
 926         if (compressed) {
 927                 long tapekb = bytes_written / 1024;
 928                 double rate = .0005 + (double) spcl.c_tapea / tapekb;
 929                 msg("Wrote %ldkB uncompressed, %ldkB compressed, %1.3f:1\n",
 930                         spcl.c_tapea, tapekb, rate);
 931         }
 932
 933         broadcast("DUMP IS DONE!\7\7\n");
 934         msg("DUMP IS DONE\n");
 935         Exit(X_FINOK);
 936         /* NOTREACHED */
 937         return 0;       /* gcc - shut up */
 938 }
 939
 940 static void
 941 usage(void)
 942 {
 943         char white[MAXPATHLEN];
 944         const char *ext2ver, *ext2date;
 945
 946         memset(white, ' ', MAXPATHLEN);
 947         white[MIN(strlen(__progname), MAXPATHLEN - 1)] = '\0';
 948
 949 #ifdef __linux__
 950         ext2fs_get_library_version(&ext2ver, &ext2date);
 951         fprintf(stderr, "%s %s (using libext2fs %s of %s)\n",
 952                 __progname, _DUMP_VERSION, ext2ver, ext2date);
 953 #else
 954         fprintf(stderr, "%s %s\n", __progname, _DUMP_VERSION);
 955 #endif
 956         fprintf(stderr,
 957                 "usage:\t%s [-0123456789ac"
 958 #ifdef KERBEROS
 959                 "k"
 960 #endif
 961                 "MnqSu"
 962                 "] [-B records] [-b blocksize] [-d density]\n"
 963                 "\t%s [-e inode#,inode#,...] [-E file] [-f file] [-h level] "
 964 #ifdef USE_QFA
 965                 "[-Q file] "
 966 #endif
 967                 "\n\t%s [-s feet] [-T date] "
 968 #ifdef HAVE_ZLIB
 969                 "[-z zlevel] "
 970 #endif
 971                 "filesystem\n"
 972                 "\t%s [-W | -w]\n",
 973                 __progname, white, white, __progname);
 974         exit(X_STARTUP);
 975 }
 976
 977 /*
 978  * Pick up a numeric argument.  It must be nonnegative and in the given
 979  * range (except that a vmax of 0 means unlimited).
 980  */
 981 static long
 982 numarg(const char *meaning, long vmin, long vmax)
 983 {
 984         char *p;
 985         long val;
 986
 987         val = strtol(optarg, &p, 10);
 988         if (*p)
 989                 errx(X_STARTUP, "illegal %s -- %s", meaning, optarg);
 990         if (val < vmin || (vmax && val > vmax))
 991                 errx(X_STARTUP, "%s must be between %ld and %ld", meaning, vmin, vmax);
 992         return (val);
 993 }
 994
 995 void
 996 sig(int signo)
 997 {
 998         switch(signo) {
 999         case SIGALRM:
1000         case SIGBUS:
1001         case SIGFPE:
1002         case SIGHUP:
1003         case SIGTERM:
1004         case SIGTRAP:
1005                 if (pipeout || fifoout)
1006                         quit("Signal on pipe: cannot recover\n");
1007                 msg("Rewriting attempted as response to unknown signal: %d.\n", signo);
1008                 (void)fflush(stderr);
1009                 (void)fflush(stdout);
1010                 close_rewind();
1011                 exit(X_REWRITE);
1012                 /* NOTREACHED */
1013         case SIGSEGV:
1014                 msg("SIGSEGV: ABORTING!\n");
1015                 (void)signal(SIGSEGV, SIG_DFL);
1016                 (void)kill(0, SIGSEGV);
1017                 /* NOTREACHED */
1018         }
1019 }
1020
1021 const char *
1022 rawname(const char *cp)
1023 {
1024 #ifdef  __linux__
1025         return cp;
1026 #else   /* __linux__ */
1027         static char rawbuf[MAXPATHLEN];
1028         char *dp = strrchr(cp, '/');
1029
1030         if (dp == NULL)
1031                 return (NULL);
1032         (void)strncpy(rawbuf, cp, min(dp-cp, MAXPATHLEN - 1));
1033         rawbuf[min(dp-cp, MAXPATHLEN-1)] = '\0';
1034         (void)strncat(rawbuf, "/r", MAXPATHLEN - 1 - strlen(rawbuf));
1035         (void)strncat(rawbuf, dp + 1, MAXPATHLEN - 1 - strlen(rawbuf));
1036         return (rawbuf);
1037 #endif  /* __linux__ */
1038 }
1039
1040 /*
1041  * obsolete --
1042  *      Change set of key letters and ordered arguments into something
1043  *      getopt(3) will like.
1044  */
1045 static void
1046 obsolete(int *argcp, char **argvp[])
1047 {
1048         int argc, flags;
1049         char *ap, **argv, *flagsp=NULL, **nargv, *p=NULL;
1050
1051         /* Setup. */
1052         argv = *argvp;
1053         argc = *argcp;
1054
1055         /* Return if no arguments or first argument has leading dash. */
1056         ap = argv[1];
1057         if (argc == 1 || *ap == '-')
1058                 return;
1059
1060         /* Allocate space for new arguments. */
1061         if ((*argvp = nargv = malloc((argc + 1) * sizeof(char *))) == NULL ||
1062             (p = flagsp = malloc(strlen(ap) + 2)) == NULL)
1063                 err(X_STARTUP, "malloc new args");
1064
1065         *nargv++ = *argv;
1066         argv += 2;
1067
1068         for (flags = 0; *ap; ++ap) {
1069                 switch (*ap) {
1070                 case 'B':
1071                 case 'b':
1072                 case 'd':
1073                 case 'e':
1074                 case 'E':
1075                 case 'f':
1076                 case 'F':
1077                 case 'h':
1078                 case 'L':
1079                 case 'Q':
1080                 case 's':
1081                 case 'T':
1082                         if (*argv == NULL) {
1083                                 warnx("option requires an argument -- %c", *ap);
1084                                 usage();
1085                         }
1086                         if ((nargv[0] = malloc(strlen(*argv) + 2 + 1)) == NULL)
1087                                 err(X_STARTUP, "malloc arg");
1088                         nargv[0][0] = '-';
1089                         nargv[0][1] = *ap;
1090                         (void)strcpy(&nargv[0][2], *argv);
1091                         ++argv;
1092                         ++nargv;
1093                         break;
1094                 default:
1095                         if (!flags) {
1096                                 *p++ = '-';
1097                                 flags = 1;
1098                         }
1099                         *p++ = *ap;
1100                         break;
1101                 }
1102         }
1103
1104         /* Terminate flags. */
1105         if (flags) {
1106                 *p = '\0';
1107                 *nargv++ = flagsp;
1108         }
1109
1110         /* Copy remaining arguments. */
1111         while ((*nargv++ = *argv++));
1112
1113         /* Update argument count. */
1114         *argcp = nargv - *argvp - 1;
1115 }
1116
1117 /*
1118  * This tests whether an inode is in the exclude list
1119  */
1120 int
1121 exclude_ino(dump_ino_t ino)
1122 {
1123         /* 04-Feb-00 ILC */
1124         if (iexclude_num) {     /* if there are inodes in the exclude list */
1125                 int idx;        /* then check this inode against it */
1126                 for (idx = 0; idx < iexclude_num; idx++)
1127                         if (ino == iexclude_list[idx])
1128                                 return 1;
1129         }
1130         return 0;
1131 }
1132
1133 /*
1134  * This tests adds an inode to the exclusion list if it isn't already there
1135  */
1136 void
1137 do_exclude_ino(dump_ino_t ino, const char *reason)
1138 {
1139         if (!exclude_ino(ino)) {
1140                 if (iexclude_num == IEXCLUDE_MAXNUM) {
1141                         msg("Too many exclude options\n");
1142                         msg("The ENTIRE dump is aborted.\n");
1143                         exit(X_STARTUP);
1144                 }
1145                 if (reason)
1146                         msg("Added inode %u to exclude list (%s)\n",
1147                             ino, reason);
1148                 else
1149                         msg("Added inode %u to exclude list\n", ino);
1150                 iexclude_list[iexclude_num++] = ino;
1151         }
1152 }
1153
1154 static void
1155 do_exclude_ino_str(char * ino) {
1156         char *r;
1157         unsigned long inod;
1158
1159         inod = strtoul(ino, &r, 10);
1160         if (*r != '\0' || inod <= ROOTINO) {
1161                 msg("Invalid inode argument %s\n", ino);
1162                 msg("The ENTIRE dump is aborted.\n");
1163                 exit(X_STARTUP);
1164         }
1165         do_exclude_ino(inod, NULL);
1166 }
1167
1168 /*
1169  * This reads a file containing one inode number per line and exclude them all
1170  */
1171 static void
1172 do_exclude_from_file(char *file) {
1173         FILE *f;
1174         char *p, fname[MAXPATHLEN];
1175
1176
1177         if (!( f = fopen(file, "r")) ) {
1178                 msg("Cannot open file for reading: %s\n", file);
1179                 msg("The ENTIRE dump is aborted.\n");
1180                 exit(X_STARTUP);
1181         }
1182         while (( p = fgets(fname, MAXPATHLEN, f))) {
1183                 if ( *p && *(p + strlen(p) - 1) == '\n' ) /* possible null string */
1184                         *(p + strlen(p) - 1) = '\0';
1185                 if ( !*p ) /* skip empty lines */
1186                         continue;
1187                 do_exclude_ino_str(p);
1188         }
1189         fclose(f);
1190 }
1191
1192 static void incompat_flags(int cond, char flag1, char flag2) {
1193         if (cond) {
1194                 msg("You cannot use the %c and %c flags together.\n",
1195                     flag1, flag2);
1196                 msg("The ENTIRE dump is aborted.\n");
1197                 exit(X_STARTUP);
1198         }
1199 }