1 /*- 2 * Copyright (c) 1980, 1991, 1993, 1994 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 static const char copyright[] = 36 "@(#) Copyright (c) 1980, 1991, 1993, 1994\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #ifndef lint 41 #if 0 42 static char sccsid[] = "@(#)main.c 8.6 (Berkeley) 5/1/95"; 43 #endif 44 static const char rcsid[] = 45 "$FreeBSD$"; 46 #endif /* not lint */ 47 48 #include <sys/param.h> 49 #include <sys/stat.h> 50 #include <sys/time.h> 51 #ifdef sunos 52 #include <sys/vnode.h> 53 54 #include <ufs/inode.h> 55 #include <ufs/fs.h> 56 #else 57 #include <ufs/ufs/dinode.h> 58 #include <ufs/ffs/fs.h> 59 #endif 60 61 #include <protocols/dumprestore.h> 62 63 #include <ctype.h> 64 #include <err.h> 65 #include <fcntl.h> 66 #include <fstab.h> 67 #include <signal.h> 68 #include <stdio.h> 69 #include <stdlib.h> 70 #include <string.h> 71 #include <unistd.h> 72 73 #include "dump.h" 74 #include "pathnames.h" 75 76 #ifndef SBOFF 77 #define SBOFF (SBLOCK * DEV_BSIZE) 78 #endif 79 80 int notify = 0; /* notify operator flag */ 81 int blockswritten = 0; /* number of blocks written on current tape */ 82 int tapeno = 0; /* current tape number */ 83 int density = 0; /* density in bytes/0.1" " <- this is for hilit19 */ 84 int ntrec = NTREC; /* # tape blocks in each tape record */ 85 int cartridge = 0; /* Assume non-cartridge tape */ 86 int dokerberos = 0; /* Use Kerberos authentication */ 87 long dev_bsize = 1; /* recalculated below */ 88 long blocksperfile; /* output blocks per file */ 89 char *host = NULL; /* remote host (if any) */ 90 91 static long numarg __P((char *, long, long)); 92 static void obsolete __P((int *, char **[])); 93 static void usage __P((void)); 94 95 int 96 main(argc, argv) 97 int argc; 98 char *argv[]; 99 { 100 register ino_t ino; 101 register int dirty; 102 register struct dinode *dp; 103 register struct fstab *dt; 104 register char *map; 105 register int ch; 106 int i, anydirskipped, bflag = 0, Tflag = 0, honorlevel = 1; 107 ino_t maxino; 108 109 spcl.c_date = 0; 110 (void)time((time_t *)&spcl.c_date); 111 112 tsize = 0; /* Default later, based on 'c' option for cart tapes */ 113 if ((tape = getenv("TAPE")) == NULL) 114 tape = _PATH_DEFTAPE; 115 dumpdates = _PATH_DUMPDATES; 116 temp = _PATH_DTMP; 117 if (TP_BSIZE / DEV_BSIZE == 0 || TP_BSIZE % DEV_BSIZE != 0) 118 quit("TP_BSIZE must be a multiple of DEV_BSIZE\n"); 119 level = '0'; 120 121 if (argc < 2) 122 usage(); 123 124 obsolete(&argc, &argv); 125 #ifdef KERBEROS 126 #define optstring "0123456789aB:b:cd:f:h:kns:T:uWwD:" 127 #else 128 #define optstring "0123456789aB:b:cd:f:h:ns:T:uWwD:" 129 #endif 130 while ((ch = getopt(argc, argv, optstring)) != -1) 131 #undef optstring 132 switch (ch) { 133 /* dump level */ 134 case '0': case '1': case '2': case '3': case '4': 135 case '5': case '6': case '7': case '8': case '9': 136 level = ch; 137 break; 138 139 case 'a': /* `auto-size', Write to EOM. */ 140 unlimited = 1; 141 break; 142 143 case 'B': /* blocks per output file */ 144 blocksperfile = numarg("number of blocks per file", 145 1L, 0L); 146 break; 147 148 case 'b': /* blocks per tape write */ 149 ntrec = numarg("number of blocks per write", 150 1L, 1000L); 151 break; 152 153 case 'c': /* Tape is cart. not 9-track */ 154 cartridge = 1; 155 break; 156 157 case 'd': /* density, in bits per inch */ 158 density = numarg("density", 10L, 327670L) / 10; 159 if (density >= 625 && !bflag) 160 ntrec = HIGHDENSITYTREC; 161 break; 162 163 case 'f': /* output file */ 164 tape = optarg; 165 break; 166 167 case 'D': 168 dumpdates = optarg; 169 break; 170 171 case 'h': 172 honorlevel = numarg("honor level", 0L, 10L); 173 break; 174 175 #ifdef KERBEROS 176 case 'k': 177 dokerberos = 1; 178 break; 179 #endif 180 181 case 'n': /* notify operators */ 182 notify = 1; 183 break; 184 185 case 's': /* tape size, feet */ 186 tsize = numarg("tape size", 1L, 0L) * 12 * 10; 187 break; 188 189 case 'T': /* time of last dump */ 190 spcl.c_ddate = unctime(optarg); 191 if (spcl.c_ddate < 0) { 192 (void)fprintf(stderr, "bad time \"%s\"\n", 193 optarg); 194 exit(X_STARTUP); 195 } 196 Tflag = 1; 197 lastlevel = '?'; 198 break; 199 200 case 'u': /* update /etc/dumpdates */ 201 uflag = 1; 202 break; 203 204 case 'W': /* what to do */ 205 case 'w': 206 lastdump(ch); 207 exit(X_FINOK); /* do nothing else */ 208 209 default: 210 usage(); 211 } 212 argc -= optind; 213 argv += optind; 214 215 if (argc < 1) { 216 (void)fprintf(stderr, "Must specify disk or filesystem\n"); 217 exit(X_STARTUP); 218 } 219 disk = *argv++; 220 argc--; 221 if (argc >= 1) { 222 (void)fprintf(stderr, "Unknown arguments to dump:"); 223 while (argc--) 224 (void)fprintf(stderr, " %s", *argv++); 225 (void)fprintf(stderr, "\n"); 226 exit(X_STARTUP); 227 } 228 if (Tflag && uflag) { 229 (void)fprintf(stderr, 230 "You cannot use the T and u flags together.\n"); 231 exit(X_STARTUP); 232 } 233 if (strcmp(tape, "-") == 0) { 234 pipeout++; 235 tape = "standard output"; 236 } 237 238 if (blocksperfile) 239 blocksperfile = blocksperfile / ntrec * ntrec; /* round down */ 240 else if (!unlimited) { 241 /* 242 * Determine how to default tape size and density 243 * 244 * density tape size 245 * 9-track 1600 bpi (160 bytes/.1") 2300 ft. 246 * 9-track 6250 bpi (625 bytes/.1") 2300 ft. 247 * cartridge 8000 bpi (100 bytes/.1") 1700 ft. 248 * (450*4 - slop) 249 * hilit19 hits again: " 250 */ 251 if (density == 0) 252 density = cartridge ? 100 : 160; 253 if (tsize == 0) 254 tsize = cartridge ? 1700L*120L : 2300L*120L; 255 } 256 257 if (strchr(tape, ':')) { 258 host = tape; 259 tape = strchr(host, ':'); 260 *tape++ = '\0'; 261 #ifdef RDUMP 262 if (index(tape, '\n')) { 263 (void)fprintf(stderr, "invalid characters in tape\n"); 264 exit(X_STARTUP); 265 } 266 if (rmthost(host) == 0) 267 exit(X_STARTUP); 268 #else 269 (void)fprintf(stderr, "remote dump not enabled\n"); 270 exit(X_STARTUP); 271 #endif 272 } 273 (void)setuid(getuid()); /* rmthost() is the only reason to be setuid */ 274 275 if (signal(SIGHUP, SIG_IGN) != SIG_IGN) 276 signal(SIGHUP, sig); 277 if (signal(SIGTRAP, SIG_IGN) != SIG_IGN) 278 signal(SIGTRAP, sig); 279 if (signal(SIGFPE, SIG_IGN) != SIG_IGN) 280 signal(SIGFPE, sig); 281 if (signal(SIGBUS, SIG_IGN) != SIG_IGN) 282 signal(SIGBUS, sig); 283 if (signal(SIGSEGV, SIG_IGN) != SIG_IGN) 284 signal(SIGSEGV, sig); 285 if (signal(SIGTERM, SIG_IGN) != SIG_IGN) 286 signal(SIGTERM, sig); 287 if (signal(SIGINT, interrupt) == SIG_IGN) 288 signal(SIGINT, SIG_IGN); 289 290 getfstab(); /* /etc/fstab snarfed */ 291 /* 292 * disk can be either the full special file name, 293 * the suffix of the special file name, 294 * the special name missing the leading '/', 295 * the file system name with or without the leading '/'. 296 */ 297 dt = fstabsearch(disk); 298 if (dt != NULL) { 299 disk = rawname(dt->fs_spec); 300 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN); 301 (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN); 302 } else { 303 (void)strncpy(spcl.c_dev, disk, NAMELEN); 304 (void)strncpy(spcl.c_filesys, "an unlisted file system", 305 NAMELEN); 306 } 307 spcl.c_dev[NAMELEN-1]='\0'; 308 spcl.c_filesys[NAMELEN-1]='\0'; 309 (void)strcpy(spcl.c_label, "none"); 310 (void)gethostname(spcl.c_host, NAMELEN); 311 spcl.c_level = level - '0'; 312 spcl.c_type = TS_TAPE; 313 if (!Tflag) 314 getdumptime(); /* /etc/dumpdates snarfed */ 315 316 msg("Date of this level %c dump: %s", level, 317 spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date)); 318 msg("Date of last level %c dump: %s", lastlevel, 319 spcl.c_ddate == 0 ? "the epoch\n" : ctime(&spcl.c_ddate)); 320 msg("Dumping %s ", disk); 321 if (dt != NULL) 322 msgtail("(%s) ", dt->fs_file); 323 if (host) 324 msgtail("to %s on host %s\n", tape, host); 325 else 326 msgtail("to %s\n", tape); 327 328 if ((diskfd = open(disk, O_RDONLY)) < 0) { 329 msg("Cannot open %s\n", disk); 330 exit(X_STARTUP); 331 } 332 sync(); 333 sblock = (struct fs *)sblock_buf; 334 bread(SBOFF, (char *) sblock, SBSIZE); 335 if (sblock->fs_magic != FS_MAGIC) 336 quit("bad sblock magic number\n"); 337 dev_bsize = sblock->fs_fsize / fsbtodb(sblock, 1); 338 dev_bshift = ffs(dev_bsize) - 1; 339 if (dev_bsize != (1 << dev_bshift)) 340 quit("dev_bsize (%d) is not a power of 2", dev_bsize); 341 tp_bshift = ffs(TP_BSIZE) - 1; 342 if (TP_BSIZE != (1 << tp_bshift)) 343 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE); 344 #ifdef FS_44INODEFMT 345 if (sblock->fs_inodefmt >= FS_44INODEFMT) 346 spcl.c_flags |= DR_NEWINODEFMT; 347 #endif 348 maxino = sblock->fs_ipg * sblock->fs_ncg; 349 mapsize = roundup(howmany(maxino, NBBY), TP_BSIZE); 350 usedinomap = (char *)calloc((unsigned) mapsize, sizeof(char)); 351 dumpdirmap = (char *)calloc((unsigned) mapsize, sizeof(char)); 352 dumpinomap = (char *)calloc((unsigned) mapsize, sizeof(char)); 353 tapesize = 3 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1); 354 355 nonodump = spcl.c_level < honorlevel; 356 357 msg("mapping (Pass I) [regular files]\n"); 358 anydirskipped = mapfiles(maxino, &tapesize); 359 360 msg("mapping (Pass II) [directories]\n"); 361 while (anydirskipped) { 362 anydirskipped = mapdirs(maxino, &tapesize); 363 } 364 365 if (pipeout || unlimited) { 366 tapesize += 10; /* 10 trailer blocks */ 367 msg("estimated %ld tape blocks.\n", tapesize); 368 } else { 369 double fetapes; 370 371 if (blocksperfile) 372 fetapes = (double) tapesize / blocksperfile; 373 else if (cartridge) { 374 /* Estimate number of tapes, assuming streaming stops at 375 the end of each block written, and not in mid-block. 376 Assume no erroneous blocks; this can be compensated 377 for with an artificially low tape size. */ 378 fetapes = 379 ( (double) tapesize /* blocks */ 380 * TP_BSIZE /* bytes/block */ 381 * (1.0/density) /* 0.1" / byte " */ 382 + 383 (double) tapesize /* blocks */ 384 * (1.0/ntrec) /* streaming-stops per block */ 385 * 15.48 /* 0.1" / streaming-stop " */ 386 ) * (1.0 / tsize ); /* tape / 0.1" " */ 387 } else { 388 /* Estimate number of tapes, for old fashioned 9-track 389 tape */ 390 int tenthsperirg = (density == 625) ? 3 : 7; 391 fetapes = 392 ( (double) tapesize /* blocks */ 393 * TP_BSIZE /* bytes / block */ 394 * (1.0/density) /* 0.1" / byte " */ 395 + 396 (double) tapesize /* blocks */ 397 * (1.0/ntrec) /* IRG's / block */ 398 * tenthsperirg /* 0.1" / IRG " */ 399 ) * (1.0 / tsize ); /* tape / 0.1" " */ 400 } 401 etapes = fetapes; /* truncating assignment */ 402 etapes++; 403 /* count the dumped inodes map on each additional tape */ 404 tapesize += (etapes - 1) * 405 (howmany(mapsize * sizeof(char), TP_BSIZE) + 1); 406 tapesize += etapes + 10; /* headers + 10 trailer blks */ 407 msg("estimated %ld tape blocks on %3.2f tape(s).\n", 408 tapesize, fetapes); 409 } 410 411 /* 412 * Allocate tape buffer. 413 */ 414 if (!alloctape()) 415 quit( 416 "can't allocate tape buffers - try a smaller blocking factor.\n"); 417 418 startnewtape(1); 419 (void)time((time_t *)&(tstart_writing)); 420 dumpmap(usedinomap, TS_CLRI, maxino - 1); 421 422 msg("dumping (Pass III) [directories]\n"); 423 dirty = 0; /* XXX just to get gcc to shut up */ 424 for (map = dumpdirmap, ino = 1; ino < maxino; ino++) { 425 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */ 426 dirty = *map++; 427 else 428 dirty >>= 1; 429 if ((dirty & 1) == 0) 430 continue; 431 /* 432 * Skip directory inodes deleted and maybe reallocated 433 */ 434 dp = getino(ino); 435 if ((dp->di_mode & IFMT) != IFDIR) 436 continue; 437 (void)dumpino(dp, ino); 438 } 439 440 msg("dumping (Pass IV) [regular files]\n"); 441 for (map = dumpinomap, ino = 1; ino < maxino; ino++) { 442 int mode; 443 444 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */ 445 dirty = *map++; 446 else 447 dirty >>= 1; 448 if ((dirty & 1) == 0) 449 continue; 450 /* 451 * Skip inodes deleted and reallocated as directories. 452 */ 453 dp = getino(ino); 454 mode = dp->di_mode & IFMT; 455 if (mode == IFDIR) 456 continue; 457 (void)dumpino(dp, ino); 458 } 459 460 (void)time((time_t *)&(tend_writing)); 461 spcl.c_type = TS_END; 462 for (i = 0; i < ntrec; i++) 463 writeheader(maxino - 1); 464 if (pipeout) 465 msg("DUMP: %ld tape blocks\n", spcl.c_tapea); 466 else 467 msg("DUMP: %ld tape blocks on %d volume%s\n", 468 spcl.c_tapea, spcl.c_volume, 469 (spcl.c_volume == 1) ? "" : "s"); 470 471 /* report dump performance, avoid division through zero */ 472 if (tend_writing - tstart_writing == 0) 473 msg("finished in less than a second\n"); 474 else 475 msg("finished in %d seconds, throughput %d KBytes/sec\n", 476 tend_writing - tstart_writing, 477 spcl.c_tapea / (tend_writing - tstart_writing)); 478 479 putdumptime(); 480 trewind(); 481 broadcast("DUMP IS DONE!\a\a\n"); 482 msg("DUMP IS DONE\n"); 483 Exit(X_FINOK); 484 /* NOTREACHED */ 485 } 486 487 static void 488 usage() 489 { 490 fprintf(stderr, 491 "usage: dump [-0123456789ac" 492 #ifdef KERBEROS 493 "k" 494 #endif 495 "nu] [-B records] [-b blocksize] [-D dumpdates]\n" 496 " [-d density] [-f file ] [-h level] [-s feet] " 497 "[-T date] filesystem\n" 498 " dump [-W | -w]\n"); 499 exit(X_STARTUP); 500 } 501 502 /* 503 * Pick up a numeric argument. It must be nonnegative and in the given 504 * range (except that a vmax of 0 means unlimited). 505 */ 506 static long 507 numarg(meaning, vmin, vmax) 508 char *meaning; 509 long vmin, vmax; 510 { 511 char *p; 512 long val; 513 514 val = strtol(optarg, &p, 10); 515 if (*p) 516 errx(1, "illegal %s -- %s", meaning, optarg); 517 if (val < vmin || (vmax && val > vmax)) 518 errx(1, "%s must be between %ld and %ld", meaning, vmin, vmax); 519 return (val); 520 } 521 522 void 523 sig(signo) 524 int signo; 525 { 526 switch(signo) { 527 case SIGALRM: 528 case SIGBUS: 529 case SIGFPE: 530 case SIGHUP: 531 case SIGTERM: 532 case SIGTRAP: 533 if (pipeout) 534 quit("Signal on pipe: cannot recover\n"); 535 msg("Rewriting attempted as response to unknown signal.\n"); 536 (void)fflush(stderr); 537 (void)fflush(stdout); 538 close_rewind(); 539 exit(X_REWRITE); 540 /* NOTREACHED */ 541 case SIGSEGV: 542 msg("SIGSEGV: ABORTING!\n"); 543 (void)signal(SIGSEGV, SIG_DFL); 544 (void)kill(0, SIGSEGV); 545 /* NOTREACHED */ 546 } 547 } 548 549 char * 550 rawname(cp) 551 char *cp; 552 { 553 static char rawbuf[MAXPATHLEN]; 554 char *dp; 555 struct stat sb; 556 557 if (stat(cp, &sb) == 0) { 558 /* 559 * If the name already refers to a raw device, return 560 * it immediately without tampering. 561 */ 562 if ((sb.st_mode & S_IFMT) == S_IFCHR) 563 return (cp); 564 } 565 566 dp = strrchr(cp, '/'); 567 568 if (dp == NULL) 569 return (NULL); 570 *dp = '\0'; 571 (void)strncpy(rawbuf, cp, MAXPATHLEN - 1); 572 rawbuf[MAXPATHLEN-1] = '\0'; 573 *dp = '/'; 574 (void)strncat(rawbuf, "/r", MAXPATHLEN - 1 - strlen(rawbuf)); 575 (void)strncat(rawbuf, dp + 1, MAXPATHLEN - 1 - strlen(rawbuf)); 576 return (rawbuf); 577 } 578 579 /* 580 * obsolete -- 581 * Change set of key letters and ordered arguments into something 582 * getopt(3) will like. 583 */ 584 static void 585 obsolete(argcp, argvp) 586 int *argcp; 587 char **argvp[]; 588 { 589 int argc, flags; 590 char *ap, **argv, *flagsp, **nargv, *p; 591 592 /* Setup. */ 593 argv = *argvp; 594 argc = *argcp; 595 596 /* Return if no arguments or first argument has leading dash. */ 597 ap = argv[1]; 598 if (argc == 1 || *ap == '-') 599 return; 600 601 /* Allocate space for new arguments. */ 602 if ((*argvp = nargv = malloc((argc + 1) * sizeof(char *))) == NULL || 603 (p = flagsp = malloc(strlen(ap) + 2)) == NULL) 604 err(1, NULL); 605 606 *nargv++ = *argv; 607 argv += 2; 608 609 for (flags = 0; *ap; ++ap) { 610 switch (*ap) { 611 case 'B': 612 case 'b': 613 case 'd': 614 case 'f': 615 case 'D': 616 case 'h': 617 case 's': 618 case 'T': 619 if (*argv == NULL) { 620 warnx("option requires an argument -- %c", *ap); 621 usage(); 622 } 623 if ((nargv[0] = malloc(strlen(*argv) + 2 + 1)) == NULL) 624 err(1, NULL); 625 nargv[0][0] = '-'; 626 nargv[0][1] = *ap; 627 (void)strcpy(&nargv[0][2], *argv); 628 ++argv; 629 ++nargv; 630 break; 631 default: 632 if (!flags) { 633 *p++ = '-'; 634 flags = 1; 635 } 636 *p++ = *ap; 637 break; 638 } 639 } 640 641 /* Terminate flags. */ 642 if (flags) { 643 *p = '\0'; 644 *nargv++ = flagsp; 645 } 646 647 /* Copy remaining arguments. */ 648 while ((*nargv++ = *argv++)); 649 650 /* Update argument count. */ 651 *argcp = nargv - *argvp - 1; 652 } 653