1 /* $NetBSD: main.c,v 1.14 1997/06/05 11:13:24 lukem Exp $ */ 2 3 /*- 4 * Copyright (c) 1980, 1991, 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #ifndef lint 37 static char copyright[] = 38 "@(#) Copyright (c) 1980, 1991, 1993, 1994\n\ 39 The Regents of the University of California. All rights reserved.\n"; 40 #endif /* not lint */ 41 42 #ifndef lint 43 #if 0 44 static char sccsid[] = "@(#)main.c 8.4 (Berkeley) 4/15/94"; 45 #else 46 static char rcsid[] = "$NetBSD: main.c,v 1.14 1997/06/05 11:13:24 lukem Exp $"; 47 #endif 48 #endif /* not lint */ 49 50 #include <sys/param.h> 51 #include <sys/time.h> 52 #include <sys/stat.h> 53 #include <sys/mount.h> 54 55 #ifdef sunos 56 #include <sys/vnode.h> 57 58 #include <ufs/inode.h> 59 #include <ufs/fs.h> 60 #else 61 #include <ufs/ffs/fs.h> 62 #include <ufs/ufs/dinode.h> 63 #endif 64 65 #include <protocols/dumprestore.h> 66 67 #include <ctype.h> 68 #include <err.h> 69 #include <errno.h> 70 #include <fcntl.h> 71 #include <fstab.h> 72 #include <signal.h> 73 #include <stdio.h> 74 #include <stdlib.h> 75 #include <string.h> 76 #include <time.h> 77 #include <unistd.h> 78 79 #include "dump.h" 80 #include "pathnames.h" 81 82 #ifndef SBOFF 83 #define SBOFF (SBLOCK * DEV_BSIZE) 84 #endif 85 86 int notify = 0; /* notify operator flag */ 87 int blockswritten = 0; /* number of blocks written on current tape */ 88 int tapeno = 0; /* current tape number */ 89 int density = 0; /* density in bytes/0.1" */ 90 int ntrec = NTREC; /* # tape blocks in each tape record */ 91 int cartridge = 0; /* Assume non-cartridge tape */ 92 long dev_bsize = 1; /* recalculated below */ 93 long blocksperfile; /* output blocks per file */ 94 char *host = NULL; /* remote host (if any) */ 95 96 static long numarg __P((char *, long, long)); 97 static void obsolete __P((int *, char **[])); 98 static void usage __P((void)); 99 100 int 101 main(argc, argv) 102 int argc; 103 char *argv[]; 104 { 105 ino_t ino; 106 int dirty; 107 struct dinode *dp; 108 struct fstab *dt; 109 char *map; 110 int ch; 111 int i, anydirskipped, bflag = 0, Tflag = 0, honorlevel = 1; 112 ino_t maxino; 113 time_t tnow; 114 int dirlist; 115 char *toplevel; 116 117 spcl.c_date = 0; 118 (void)time((time_t *)&spcl.c_date); 119 120 tsize = 0; /* Default later, based on 'c' option for cart tapes */ 121 if ((tape = getenv("TAPE")) == NULL) 122 tape = _PATH_DEFTAPE; 123 dumpdates = _PATH_DUMPDATES; 124 temp = _PATH_DTMP; 125 if (TP_BSIZE / DEV_BSIZE == 0 || TP_BSIZE % DEV_BSIZE != 0) 126 quit("TP_BSIZE must be a multiple of DEV_BSIZE\n"); 127 level = '0'; 128 129 if (argc < 2) 130 usage(); 131 132 obsolete(&argc, &argv); 133 while ((ch = getopt(argc, argv, "0123456789B:b:cd:f:h:ns:T:uWw")) != -1) 134 switch (ch) { 135 /* dump level */ 136 case '0': case '1': case '2': case '3': case '4': 137 case '5': case '6': case '7': case '8': case '9': 138 level = ch; 139 break; 140 141 case 'B': /* blocks per output file */ 142 blocksperfile = numarg("blocks per file", 1L, 0L); 143 break; 144 145 case 'b': /* blocks per tape write */ 146 ntrec = numarg("blocks per write", 1L, 1000L); 147 bflag = 1; 148 break; 149 150 case 'c': /* Tape is cart. not 9-track */ 151 cartridge = 1; 152 break; 153 154 case 'd': /* density, in bits per inch */ 155 density = numarg("density", 10L, 327670L) / 10; 156 if (density >= 625 && !bflag) 157 ntrec = HIGHDENSITYTREC; 158 break; 159 160 case 'f': /* output file */ 161 tape = optarg; 162 break; 163 164 case 'h': 165 honorlevel = numarg("honor level", 0L, 10L); 166 break; 167 168 case 'n': /* notify operators */ 169 notify = 1; 170 break; 171 172 case 's': /* tape size, feet */ 173 tsize = numarg("tape size", 1L, 0L) * 12 * 10; 174 break; 175 176 case 'T': /* time of last dump */ 177 spcl.c_ddate = unctime(optarg); 178 if (spcl.c_ddate < 0) { 179 (void)fprintf(stderr, "bad time \"%s\"\n", 180 optarg); 181 exit(X_ABORT); 182 } 183 Tflag = 1; 184 lastlevel = '?'; 185 break; 186 187 case 'u': /* update /etc/dumpdates */ 188 uflag = 1; 189 break; 190 191 case 'W': /* what to do */ 192 case 'w': 193 lastdump(ch); 194 exit(0); /* do nothing else */ 195 196 default: 197 usage(); 198 } 199 argc -= optind; 200 argv += optind; 201 202 if (argc < 1) { 203 (void)fprintf(stderr, "Must specify disk or filesystem\n"); 204 exit(X_ABORT); 205 } 206 207 /* 208 * determine if disk is a subdirectory, and setup appropriately 209 */ 210 dirlist = 0; 211 toplevel = NULL; 212 for (i = 0; i < argc; i++) { 213 struct stat sb; 214 struct statfs fsbuf; 215 216 if (lstat(argv[i], &sb) == -1) { 217 msg("Cannot lstat %s: %s\n", argv[i], strerror(errno)); 218 exit(X_ABORT); 219 } 220 if (!S_ISDIR(sb.st_mode) && !S_ISREG(sb.st_mode)) 221 break; 222 if (statfs(argv[i], &fsbuf) == -1) { 223 msg("Cannot statfs %s: %s\n", argv[i], strerror(errno)); 224 exit(X_ABORT); 225 } 226 if (strcmp(argv[i], fsbuf.f_mntonname) == 0) { 227 if (dirlist != 0) { 228 msg("Can't dump a mountpoint and a filelist\n"); 229 exit(X_ABORT); 230 } 231 break; /* exit if sole mountpoint */ 232 } 233 if (!disk) { 234 if ((toplevel = strdup(fsbuf.f_mntonname)) == NULL) { 235 msg("Cannot malloc diskname\n"); 236 exit(X_ABORT); 237 } 238 disk = toplevel; 239 if (uflag) { 240 msg("Ignoring u flag for subdir dump\n"); 241 uflag = 0; 242 } 243 if (level > '0') { 244 msg("Subdir dump is done at level 0\n"); 245 level = '0'; 246 } 247 msg("Dumping sub files/directories from %s\n", disk); 248 } else { 249 if (strcmp(disk, fsbuf.f_mntonname) != 0) { 250 msg("%s is not on %s\n", argv[i], disk); 251 exit(X_ABORT); 252 } 253 } 254 msg("Dumping file/directory %s\n", argv[i]); 255 dirlist++; 256 } 257 if (dirlist == 0) { 258 disk = *argv++; 259 if (argc != 1) { 260 (void)fprintf(stderr, "Excess arguments to dump:"); 261 while (--argc) 262 (void)fprintf(stderr, " %s", *argv++); 263 (void)fprintf(stderr, "\n"); 264 exit(X_ABORT); 265 } 266 } 267 if (Tflag && uflag) { 268 (void)fprintf(stderr, 269 "You cannot use the T and u flags together.\n"); 270 exit(X_ABORT); 271 } 272 if (strcmp(tape, "-") == 0) { 273 pipeout++; 274 tape = "standard output"; 275 } 276 277 if (blocksperfile) 278 blocksperfile = blocksperfile / ntrec * ntrec; /* round down */ 279 else { 280 /* 281 * Determine how to default tape size and density 282 * 283 * density tape size 284 * 9-track 1600 bpi (160 bytes/.1") 2300 ft. 285 * 9-track 6250 bpi (625 bytes/.1") 2300 ft. 286 * cartridge 8000 bpi (100 bytes/.1") 1700 ft. 287 * (450*4 - slop) 288 */ 289 if (density == 0) 290 density = cartridge ? 100 : 160; 291 if (tsize == 0) 292 tsize = cartridge ? 1700L*120L : 2300L*120L; 293 } 294 295 if (strchr(tape, ':')) { 296 host = tape; 297 tape = strchr(host, ':'); 298 *tape++ = '\0'; 299 #ifdef RDUMP 300 if (rmthost(host) == 0) 301 exit(X_ABORT); 302 #else 303 (void)fprintf(stderr, "remote dump not enabled\n"); 304 exit(X_ABORT); 305 #endif 306 } 307 308 if (signal(SIGHUP, SIG_IGN) != SIG_IGN) 309 signal(SIGHUP, sig); 310 if (signal(SIGTRAP, SIG_IGN) != SIG_IGN) 311 signal(SIGTRAP, sig); 312 if (signal(SIGFPE, SIG_IGN) != SIG_IGN) 313 signal(SIGFPE, sig); 314 if (signal(SIGBUS, SIG_IGN) != SIG_IGN) 315 signal(SIGBUS, sig); 316 if (signal(SIGSEGV, SIG_IGN) != SIG_IGN) 317 signal(SIGSEGV, sig); 318 if (signal(SIGTERM, SIG_IGN) != SIG_IGN) 319 signal(SIGTERM, sig); 320 if (signal(SIGINT, interrupt) == SIG_IGN) 321 signal(SIGINT, SIG_IGN); 322 323 set_operators(); /* /etc/group snarfed */ 324 getfstab(); /* /etc/fstab snarfed */ 325 326 /* 327 * disk can be either the full special file name, 328 * the suffix of the special file name, 329 * the special name missing the leading '/', 330 * the file system name with or without the leading '/'. 331 */ 332 dt = fstabsearch(disk); 333 if (dt != NULL) { 334 disk = rawname(dt->fs_spec); 335 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN); 336 if (dirlist != 0) 337 (void)snprintf(spcl.c_filesys, NAMELEN, 338 "a subset of %s", dt->fs_file); 339 else 340 (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN); 341 } else { 342 (void)strncpy(spcl.c_dev, disk, NAMELEN); 343 (void)strncpy(spcl.c_filesys, "an unlisted file system", 344 NAMELEN); 345 } 346 (void)strncpy(spcl.c_label, "none", sizeof(spcl.c_label) - 1); 347 (void)gethostname(spcl.c_host, NAMELEN); 348 spcl.c_level = level - '0'; 349 spcl.c_type = TS_TAPE; 350 if (!Tflag) 351 getdumptime(); /* /etc/dumpdates snarfed */ 352 353 msg("Date of this level %c dump: %s", level, 354 spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date)); 355 msg("Date of last level %c dump: %s", lastlevel, 356 spcl.c_ddate == 0 ? "the epoch\n" : ctime(&spcl.c_ddate)); 357 msg("Dumping %s ", disk); 358 if (dt != NULL) 359 msgtail("(%s) ", dt->fs_file); 360 if (host) 361 msgtail("to %s on host %s\n", tape, host); 362 else 363 msgtail("to %s\n", tape); 364 365 if ((diskfd = open(disk, O_RDONLY)) < 0) { 366 msg("Cannot open %s\n", disk); 367 exit(X_ABORT); 368 } 369 sync(); 370 sblock = (struct fs *)sblock_buf; 371 bread(SBOFF, (char *) sblock, SBSIZE); 372 if (sblock->fs_magic != FS_MAGIC) 373 quit("bad sblock magic number\n"); 374 dev_bsize = sblock->fs_fsize / fsbtodb(sblock, 1); 375 dev_bshift = ffs(dev_bsize) - 1; 376 if (dev_bsize != (1 << dev_bshift)) 377 quit("dev_bsize (%d) is not a power of 2", dev_bsize); 378 tp_bshift = ffs(TP_BSIZE) - 1; 379 if (TP_BSIZE != (1 << tp_bshift)) 380 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE); 381 #ifdef FS_44INODEFMT 382 if (sblock->fs_inodefmt >= FS_44INODEFMT) 383 spcl.c_flags |= DR_NEWINODEFMT; 384 #endif 385 maxino = sblock->fs_ipg * sblock->fs_ncg; 386 mapsize = roundup(howmany(maxino, NBBY), TP_BSIZE); 387 usedinomap = (char *)calloc((unsigned) mapsize, sizeof(char)); 388 dumpdirmap = (char *)calloc((unsigned) mapsize, sizeof(char)); 389 dumpinomap = (char *)calloc((unsigned) mapsize, sizeof(char)); 390 tapesize = 3 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1); 391 392 nonodump = spcl.c_level < honorlevel; 393 394 (void)signal(SIGINFO, statussig); 395 396 msg("mapping (Pass I) [regular files]\n"); 397 anydirskipped = mapfiles(maxino, &tapesize, toplevel, 398 (dirlist ? argv : NULL)); 399 400 msg("mapping (Pass II) [directories]\n"); 401 while (anydirskipped) { 402 anydirskipped = mapdirs(maxino, &tapesize); 403 } 404 405 if (pipeout) { 406 tapesize += 10; /* 10 trailer blocks */ 407 msg("estimated %ld tape blocks.\n", tapesize); 408 } else { 409 double fetapes; 410 411 if (blocksperfile) 412 fetapes = (double) tapesize / blocksperfile; 413 else if (cartridge) { 414 /* Estimate number of tapes, assuming streaming stops at 415 the end of each block written, and not in mid-block. 416 Assume no erroneous blocks; this can be compensated 417 for with an artificially low tape size. */ 418 fetapes = 419 ( tapesize /* blocks */ 420 * TP_BSIZE /* bytes/block */ 421 * (1.0/density) /* 0.1" / byte */ 422 + 423 tapesize /* blocks */ 424 * (1.0/ntrec) /* streaming-stops per block */ 425 * 15.48 /* 0.1" / streaming-stop */ 426 ) * (1.0 / tsize ); /* tape / 0.1" */ 427 } else { 428 /* Estimate number of tapes, for old fashioned 9-track 429 tape */ 430 int tenthsperirg = (density == 625) ? 3 : 7; 431 fetapes = 432 ( tapesize /* blocks */ 433 * TP_BSIZE /* bytes / block */ 434 * (1.0/density) /* 0.1" / byte */ 435 + 436 tapesize /* blocks */ 437 * (1.0/ntrec) /* IRG's / block */ 438 * tenthsperirg /* 0.1" / IRG */ 439 ) * (1.0 / tsize ); /* tape / 0.1" */ 440 } 441 etapes = fetapes; /* truncating assignment */ 442 etapes++; 443 /* count the dumped inodes map on each additional tape */ 444 tapesize += (etapes - 1) * 445 (howmany(mapsize * sizeof(char), TP_BSIZE) + 1); 446 tapesize += etapes + 10; /* headers + 10 trailer blks */ 447 msg("estimated %ld tape blocks on %3.2f tape(s).\n", 448 tapesize, fetapes); 449 } 450 451 /* 452 * Allocate tape buffer. 453 */ 454 if (!alloctape()) 455 quit("can't allocate tape buffers - try a smaller blocking factor.\n"); 456 457 startnewtape(1); 458 (void)time((time_t *)&(tstart_writing)); 459 xferrate = 0; 460 dumpmap(usedinomap, TS_CLRI, maxino - 1); 461 462 msg("dumping (Pass III) [directories]\n"); 463 dirty = 0; /* XXX just to get gcc to shut up */ 464 for (map = dumpdirmap, ino = 1; ino < maxino; ino++) { 465 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */ 466 dirty = *map++; 467 else 468 dirty >>= 1; 469 if ((dirty & 1) == 0) 470 continue; 471 /* 472 * Skip directory inodes deleted and maybe reallocated 473 */ 474 dp = getino(ino); 475 if ((dp->di_mode & IFMT) != IFDIR) 476 continue; 477 (void)dumpino(dp, ino); 478 } 479 480 msg("dumping (Pass IV) [regular files]\n"); 481 for (map = dumpinomap, ino = 1; ino < maxino; ino++) { 482 int mode; 483 484 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */ 485 dirty = *map++; 486 else 487 dirty >>= 1; 488 if ((dirty & 1) == 0) 489 continue; 490 /* 491 * Skip inodes deleted and reallocated as directories. 492 */ 493 dp = getino(ino); 494 mode = dp->di_mode & IFMT; 495 if (mode == IFDIR) 496 continue; 497 (void)dumpino(dp, ino); 498 } 499 500 spcl.c_type = TS_END; 501 for (i = 0; i < ntrec; i++) 502 writeheader(maxino - 1); 503 if (pipeout) 504 msg("DUMP: %ld tape blocks\n",spcl.c_tapea); 505 else 506 msg("DUMP: %ld tape blocks on %d volume%s\n", 507 spcl.c_tapea, spcl.c_volume, 508 (spcl.c_volume == 1) ? "" : "s"); 509 tnow = do_stats(); 510 msg("Date of this level %c dump: %s", level, 511 spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date)); 512 msg("Date this dump completed: %s", ctime(&tnow)); 513 msg("Average transfer rate: %ld KB/s\n", xferrate / tapeno); 514 putdumptime(); 515 trewind(); 516 broadcast("DUMP IS DONE!\7\7\n"); 517 msg("DUMP IS DONE\n"); 518 Exit(X_FINOK); 519 /* NOTREACHED */ 520 } 521 522 static void 523 usage() 524 { 525 526 (void)fprintf(stderr, "usage: dump [-0123456789cnu] [-B records] [-b blocksize] [-d density] [-f file]\n [-h level] [-s feet] [-T date] filesystem\n"); 527 (void)fprintf(stderr, " dump [-W | -w]\n"); 528 exit(1); 529 } 530 531 /* 532 * Pick up a numeric argument. It must be nonnegative and in the given 533 * range (except that a vmax of 0 means unlimited). 534 */ 535 static long 536 numarg(meaning, vmin, vmax) 537 char *meaning; 538 long vmin, vmax; 539 { 540 char *p; 541 long val; 542 543 val = strtol(optarg, &p, 10); 544 if (*p) 545 errx(1, "illegal %s -- %s", meaning, optarg); 546 if (val < vmin || (vmax && val > vmax)) 547 errx(1, "%s must be between %ld and %ld", meaning, vmin, vmax); 548 return (val); 549 } 550 551 void 552 sig(signo) 553 int signo; 554 { 555 switch(signo) { 556 case SIGALRM: 557 case SIGBUS: 558 case SIGFPE: 559 case SIGHUP: 560 case SIGTERM: 561 case SIGTRAP: 562 if (pipeout) 563 quit("Signal on pipe: cannot recover\n"); 564 msg("Rewriting attempted as response to unknown signal.\n"); 565 (void)fflush(stderr); 566 (void)fflush(stdout); 567 close_rewind(); 568 exit(X_REWRITE); 569 /* NOTREACHED */ 570 case SIGSEGV: 571 msg("SIGSEGV: ABORTING!\n"); 572 (void)signal(SIGSEGV, SIG_DFL); 573 (void)kill(0, SIGSEGV); 574 /* NOTREACHED */ 575 } 576 } 577 578 char * 579 rawname(cp) 580 char *cp; 581 { 582 static char rawbuf[MAXPATHLEN]; 583 char *dp = strrchr(cp, '/'); 584 585 if (dp == NULL) 586 return (NULL); 587 *dp = '\0'; 588 (void)snprintf(rawbuf, sizeof rawbuf, "%s/r%s", cp, dp + 1); 589 *dp = '/'; 590 return (rawbuf); 591 } 592 593 /* 594 * obsolete -- 595 * Change set of key letters and ordered arguments into something 596 * getopt(3) will like. 597 */ 598 static void 599 obsolete(argcp, argvp) 600 int *argcp; 601 char **argvp[]; 602 { 603 int argc, flags; 604 char *ap, **argv, *flagsp, **nargv, *p; 605 606 /* Setup. */ 607 argv = *argvp; 608 argc = *argcp; 609 610 /* Return if no arguments or first argument has leading dash. */ 611 ap = argv[1]; 612 if (argc == 1 || *ap == '-') 613 return; 614 615 /* Allocate space for new arguments. */ 616 if ((*argvp = nargv = malloc((argc + 1) * sizeof(char *))) == NULL || 617 (p = flagsp = malloc(strlen(ap) + 2)) == NULL) 618 err(1, "malloc"); 619 620 *nargv++ = *argv; 621 argv += 2; 622 623 for (flags = 0; *ap; ++ap) { 624 switch (*ap) { 625 case 'B': 626 case 'b': 627 case 'd': 628 case 'f': 629 case 'h': 630 case 's': 631 case 'T': 632 if (*argv == NULL) { 633 warnx("option requires an argument -- %c", *ap); 634 usage(); 635 } 636 if ((nargv[0] = malloc(strlen(*argv) + 2 + 1)) == NULL) 637 err(1, "malloc"); 638 nargv[0][0] = '-'; 639 nargv[0][1] = *ap; 640 (void)strcpy(&nargv[0][2], *argv); /* XXX strcpy is safe */ 641 ++argv; 642 ++nargv; 643 break; 644 default: 645 if (!flags) { 646 *p++ = '-'; 647 flags = 1; 648 } 649 *p++ = *ap; 650 break; 651 } 652 } 653 654 /* Terminate flags. */ 655 if (flags) { 656 *p = '\0'; 657 *nargv++ = flagsp; 658 } 659 660 /* Copy remaining arguments. */ 661 while ((*nargv++ = *argv++) != NULL) 662 ; 663 664 /* Update argument count. */ 665 *argcp = nargv - *argvp - 1; 666 } 667