main.c revision 1.13
1 /* $NetBSD: main.c,v 1.13 1997/05/27 08:35:28 mrg 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 1.13 1997/05/27 08:35:28 mrg Exp $"; 47 #endif 48 #endif /* not lint */ 49 50 #include <sys/param.h> 51 #include <sys/time.h> 52 #ifdef sunos 53 #include <sys/vnode.h> 54 55 #include <ufs/inode.h> 56 #include <ufs/fs.h> 57 #else 58 #include <ufs/ffs/fs.h> 59 #include <ufs/ufs/dinode.h> 60 #endif 61 62 #include <protocols/dumprestore.h> 63 64 #include <ctype.h> 65 #include <err.h> 66 #include <errno.h> 67 #include <fcntl.h> 68 #include <fstab.h> 69 #include <signal.h> 70 #include <stdio.h> 71 #include <stdlib.h> 72 #include <string.h> 73 #include <time.h> 74 #include <unistd.h> 75 76 #include "dump.h" 77 #include "pathnames.h" 78 79 #ifndef SBOFF 80 #define SBOFF (SBLOCK * DEV_BSIZE) 81 #endif 82 83 int notify = 0; /* notify operator flag */ 84 int blockswritten = 0; /* number of blocks written on current tape */ 85 int tapeno = 0; /* current tape number */ 86 int density = 0; /* density in bytes/0.1" */ 87 int ntrec = NTREC; /* # tape blocks in each tape record */ 88 int cartridge = 0; /* Assume non-cartridge tape */ 89 long dev_bsize = 1; /* recalculated below */ 90 long blocksperfile; /* output blocks per file */ 91 char *host = NULL; /* remote host (if any) */ 92 93 static long numarg __P((char *, long, long)); 94 static void obsolete __P((int *, char **[])); 95 static void usage __P((void)); 96 97 int 98 main(argc, argv) 99 int argc; 100 char *argv[]; 101 { 102 ino_t ino; 103 int dirty; 104 struct dinode *dp; 105 struct fstab *dt; 106 char *map; 107 int ch; 108 int i, anydirskipped, bflag = 0, Tflag = 0, honorlevel = 1; 109 ino_t maxino; 110 time_t tnow; 111 112 spcl.c_date = 0; 113 (void)time((time_t *)&spcl.c_date); 114 115 tsize = 0; /* Default later, based on 'c' option for cart tapes */ 116 if ((tape = getenv("TAPE")) == NULL) 117 tape = _PATH_DEFTAPE; 118 dumpdates = _PATH_DUMPDATES; 119 temp = _PATH_DTMP; 120 if (TP_BSIZE / DEV_BSIZE == 0 || TP_BSIZE % DEV_BSIZE != 0) 121 quit("TP_BSIZE must be a multiple of DEV_BSIZE\n"); 122 level = '0'; 123 124 if (argc < 2) 125 usage(); 126 127 obsolete(&argc, &argv); 128 while ((ch = getopt(argc, argv, "0123456789B:b:cd:f:h:ns:T:uWw")) != -1) 129 switch (ch) { 130 /* dump level */ 131 case '0': case '1': case '2': case '3': case '4': 132 case '5': case '6': case '7': case '8': case '9': 133 level = ch; 134 break; 135 136 case 'B': /* blocks per output file */ 137 blocksperfile = numarg("blocks per file", 1L, 0L); 138 break; 139 140 case 'b': /* blocks per tape write */ 141 ntrec = numarg("blocks per write", 1L, 1000L); 142 bflag = 1; 143 break; 144 145 case 'c': /* Tape is cart. not 9-track */ 146 cartridge = 1; 147 break; 148 149 case 'd': /* density, in bits per inch */ 150 density = numarg("density", 10L, 327670L) / 10; 151 if (density >= 625 && !bflag) 152 ntrec = HIGHDENSITYTREC; 153 break; 154 155 case 'f': /* output file */ 156 tape = optarg; 157 break; 158 159 case 'h': 160 honorlevel = numarg("honor level", 0L, 10L); 161 break; 162 163 case 'n': /* notify operators */ 164 notify = 1; 165 break; 166 167 case 's': /* tape size, feet */ 168 tsize = numarg("tape size", 1L, 0L) * 12 * 10; 169 break; 170 171 case 'T': /* time of last dump */ 172 spcl.c_ddate = unctime(optarg); 173 if (spcl.c_ddate < 0) { 174 (void)fprintf(stderr, "bad time \"%s\"\n", 175 optarg); 176 exit(X_ABORT); 177 } 178 Tflag = 1; 179 lastlevel = '?'; 180 break; 181 182 case 'u': /* update /etc/dumpdates */ 183 uflag = 1; 184 break; 185 186 case 'W': /* what to do */ 187 case 'w': 188 lastdump(ch); 189 exit(0); /* do nothing else */ 190 191 default: 192 usage(); 193 } 194 argc -= optind; 195 argv += optind; 196 197 if (argc < 1) { 198 (void)fprintf(stderr, "Must specify disk or filesystem\n"); 199 exit(X_ABORT); 200 } 201 disk = *argv++; 202 argc--; 203 if (argc >= 1) { 204 (void)fprintf(stderr, "Unknown arguments to dump:"); 205 while (argc--) 206 (void)fprintf(stderr, " %s", *argv++); 207 (void)fprintf(stderr, "\n"); 208 exit(X_ABORT); 209 } 210 if (Tflag && uflag) { 211 (void)fprintf(stderr, 212 "You cannot use the T and u flags together.\n"); 213 exit(X_ABORT); 214 } 215 if (strcmp(tape, "-") == 0) { 216 pipeout++; 217 tape = "standard output"; 218 } 219 220 if (blocksperfile) 221 blocksperfile = blocksperfile / ntrec * ntrec; /* round down */ 222 else { 223 /* 224 * Determine how to default tape size and density 225 * 226 * density tape size 227 * 9-track 1600 bpi (160 bytes/.1") 2300 ft. 228 * 9-track 6250 bpi (625 bytes/.1") 2300 ft. 229 * cartridge 8000 bpi (100 bytes/.1") 1700 ft. 230 * (450*4 - slop) 231 */ 232 if (density == 0) 233 density = cartridge ? 100 : 160; 234 if (tsize == 0) 235 tsize = cartridge ? 1700L*120L : 2300L*120L; 236 } 237 238 if (strchr(tape, ':')) { 239 host = tape; 240 tape = strchr(host, ':'); 241 *tape++ = '\0'; 242 #ifdef RDUMP 243 if (rmthost(host) == 0) 244 exit(X_ABORT); 245 #else 246 (void)fprintf(stderr, "remote dump not enabled\n"); 247 exit(X_ABORT); 248 #endif 249 } 250 251 if (signal(SIGHUP, SIG_IGN) != SIG_IGN) 252 signal(SIGHUP, sig); 253 if (signal(SIGTRAP, SIG_IGN) != SIG_IGN) 254 signal(SIGTRAP, sig); 255 if (signal(SIGFPE, SIG_IGN) != SIG_IGN) 256 signal(SIGFPE, sig); 257 if (signal(SIGBUS, SIG_IGN) != SIG_IGN) 258 signal(SIGBUS, sig); 259 if (signal(SIGSEGV, SIG_IGN) != SIG_IGN) 260 signal(SIGSEGV, sig); 261 if (signal(SIGTERM, SIG_IGN) != SIG_IGN) 262 signal(SIGTERM, sig); 263 if (signal(SIGINT, interrupt) == SIG_IGN) 264 signal(SIGINT, SIG_IGN); 265 266 set_operators(); /* /etc/group snarfed */ 267 getfstab(); /* /etc/fstab snarfed */ 268 /* 269 * disk can be either the full special file name, 270 * the suffix of the special file name, 271 * the special name missing the leading '/', 272 * the file system name with or without the leading '/'. 273 */ 274 dt = fstabsearch(disk); 275 if (dt != NULL) { 276 disk = rawname(dt->fs_spec); 277 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN); 278 (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN); 279 } else { 280 (void)strncpy(spcl.c_dev, disk, NAMELEN); 281 (void)strncpy(spcl.c_filesys, "an unlisted file system", 282 NAMELEN); 283 } 284 (void)strncpy(spcl.c_label, "none", sizeof(spcl.c_label) - 1); 285 (void)gethostname(spcl.c_host, NAMELEN); 286 spcl.c_level = level - '0'; 287 spcl.c_type = TS_TAPE; 288 if (!Tflag) 289 getdumptime(); /* /etc/dumpdates snarfed */ 290 291 msg("Date of this level %c dump: %s", level, 292 spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date)); 293 msg("Date of last level %c dump: %s", lastlevel, 294 spcl.c_ddate == 0 ? "the epoch\n" : ctime(&spcl.c_ddate)); 295 msg("Dumping %s ", disk); 296 if (dt != NULL) 297 msgtail("(%s) ", dt->fs_file); 298 if (host) 299 msgtail("to %s on host %s\n", tape, host); 300 else 301 msgtail("to %s\n", tape); 302 303 if ((diskfd = open(disk, O_RDONLY)) < 0) { 304 msg("Cannot open %s\n", disk); 305 exit(X_ABORT); 306 } 307 sync(); 308 sblock = (struct fs *)sblock_buf; 309 bread(SBOFF, (char *) sblock, SBSIZE); 310 if (sblock->fs_magic != FS_MAGIC) 311 quit("bad sblock magic number\n"); 312 dev_bsize = sblock->fs_fsize / fsbtodb(sblock, 1); 313 dev_bshift = ffs(dev_bsize) - 1; 314 if (dev_bsize != (1 << dev_bshift)) 315 quit("dev_bsize (%d) is not a power of 2", dev_bsize); 316 tp_bshift = ffs(TP_BSIZE) - 1; 317 if (TP_BSIZE != (1 << tp_bshift)) 318 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE); 319 #ifdef FS_44INODEFMT 320 if (sblock->fs_inodefmt >= FS_44INODEFMT) 321 spcl.c_flags |= DR_NEWINODEFMT; 322 #endif 323 maxino = sblock->fs_ipg * sblock->fs_ncg; 324 mapsize = roundup(howmany(maxino, NBBY), TP_BSIZE); 325 usedinomap = (char *)calloc((unsigned) mapsize, sizeof(char)); 326 dumpdirmap = (char *)calloc((unsigned) mapsize, sizeof(char)); 327 dumpinomap = (char *)calloc((unsigned) mapsize, sizeof(char)); 328 tapesize = 3 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1); 329 330 nonodump = spcl.c_level < honorlevel; 331 332 msg("mapping (Pass I) [regular files]\n"); 333 anydirskipped = mapfiles(maxino, &tapesize); 334 335 msg("mapping (Pass II) [directories]\n"); 336 while (anydirskipped) { 337 anydirskipped = mapdirs(maxino, &tapesize); 338 } 339 340 if (pipeout) { 341 tapesize += 10; /* 10 trailer blocks */ 342 msg("estimated %ld tape blocks.\n", tapesize); 343 } else { 344 double fetapes; 345 346 if (blocksperfile) 347 fetapes = (double) tapesize / blocksperfile; 348 else if (cartridge) { 349 /* Estimate number of tapes, assuming streaming stops at 350 the end of each block written, and not in mid-block. 351 Assume no erroneous blocks; this can be compensated 352 for with an artificially low tape size. */ 353 fetapes = 354 ( tapesize /* blocks */ 355 * TP_BSIZE /* bytes/block */ 356 * (1.0/density) /* 0.1" / byte */ 357 + 358 tapesize /* blocks */ 359 * (1.0/ntrec) /* streaming-stops per block */ 360 * 15.48 /* 0.1" / streaming-stop */ 361 ) * (1.0 / tsize ); /* tape / 0.1" */ 362 } else { 363 /* Estimate number of tapes, for old fashioned 9-track 364 tape */ 365 int tenthsperirg = (density == 625) ? 3 : 7; 366 fetapes = 367 ( tapesize /* blocks */ 368 * TP_BSIZE /* bytes / block */ 369 * (1.0/density) /* 0.1" / byte */ 370 + 371 tapesize /* blocks */ 372 * (1.0/ntrec) /* IRG's / block */ 373 * tenthsperirg /* 0.1" / IRG */ 374 ) * (1.0 / tsize ); /* tape / 0.1" */ 375 } 376 etapes = fetapes; /* truncating assignment */ 377 etapes++; 378 /* count the dumped inodes map on each additional tape */ 379 tapesize += (etapes - 1) * 380 (howmany(mapsize * sizeof(char), TP_BSIZE) + 1); 381 tapesize += etapes + 10; /* headers + 10 trailer blks */ 382 msg("estimated %ld tape blocks on %3.2f tape(s).\n", 383 tapesize, fetapes); 384 } 385 386 /* 387 * Allocate tape buffer. 388 */ 389 if (!alloctape()) 390 quit("can't allocate tape buffers - try a smaller blocking factor.\n"); 391 392 startnewtape(1); 393 (void)time((time_t *)&(tstart_writing)); 394 xferrate = 0; 395 dumpmap(usedinomap, TS_CLRI, maxino - 1); 396 397 msg("dumping (Pass III) [directories]\n"); 398 dirty = 0; /* XXX just to get gcc to shut up */ 399 for (map = dumpdirmap, ino = 1; ino < maxino; ino++) { 400 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */ 401 dirty = *map++; 402 else 403 dirty >>= 1; 404 if ((dirty & 1) == 0) 405 continue; 406 /* 407 * Skip directory inodes deleted and maybe reallocated 408 */ 409 dp = getino(ino); 410 if ((dp->di_mode & IFMT) != IFDIR) 411 continue; 412 (void)dumpino(dp, ino); 413 } 414 415 msg("dumping (Pass IV) [regular files]\n"); 416 for (map = dumpinomap, ino = 1; ino < maxino; ino++) { 417 int mode; 418 419 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */ 420 dirty = *map++; 421 else 422 dirty >>= 1; 423 if ((dirty & 1) == 0) 424 continue; 425 /* 426 * Skip inodes deleted and reallocated as directories. 427 */ 428 dp = getino(ino); 429 mode = dp->di_mode & IFMT; 430 if (mode == IFDIR) 431 continue; 432 (void)dumpino(dp, ino); 433 } 434 435 spcl.c_type = TS_END; 436 for (i = 0; i < ntrec; i++) 437 writeheader(maxino - 1); 438 if (pipeout) 439 msg("DUMP: %ld tape blocks\n",spcl.c_tapea); 440 else 441 msg("DUMP: %ld tape blocks on %d volume%s\n", 442 spcl.c_tapea, spcl.c_volume, 443 (spcl.c_volume == 1) ? "" : "s"); 444 tnow = do_stats(); 445 msg("Date of this level %c dump: %s", level, 446 spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date)); 447 msg("Date this dump completed: %s", ctime(&tnow)); 448 msg("Average transfer rate: %ldK/s\n", xferrate / tapeno); 449 putdumptime(); 450 trewind(); 451 broadcast("DUMP IS DONE!\7\7\n"); 452 msg("DUMP IS DONE\n"); 453 Exit(X_FINOK); 454 /* NOTREACHED */ 455 } 456 457 static void 458 usage() 459 { 460 461 (void)fprintf(stderr, "usage: dump [-0123456789cnu] [-B records] [-b blocksize] [-d density] [-f file]\n [-h level] [-s feet] [-T date] filesystem\n"); 462 (void)fprintf(stderr, " dump [-W | -w]\n"); 463 exit(1); 464 } 465 466 /* 467 * Pick up a numeric argument. It must be nonnegative and in the given 468 * range (except that a vmax of 0 means unlimited). 469 */ 470 static long 471 numarg(meaning, vmin, vmax) 472 char *meaning; 473 long vmin, vmax; 474 { 475 char *p; 476 long val; 477 478 val = strtol(optarg, &p, 10); 479 if (*p) 480 errx(1, "illegal %s -- %s", meaning, optarg); 481 if (val < vmin || (vmax && val > vmax)) 482 errx(1, "%s must be between %ld and %ld", meaning, vmin, vmax); 483 return (val); 484 } 485 486 void 487 sig(signo) 488 int signo; 489 { 490 switch(signo) { 491 case SIGALRM: 492 case SIGBUS: 493 case SIGFPE: 494 case SIGHUP: 495 case SIGTERM: 496 case SIGTRAP: 497 if (pipeout) 498 quit("Signal on pipe: cannot recover\n"); 499 msg("Rewriting attempted as response to unknown signal.\n"); 500 (void)fflush(stderr); 501 (void)fflush(stdout); 502 close_rewind(); 503 exit(X_REWRITE); 504 /* NOTREACHED */ 505 case SIGSEGV: 506 msg("SIGSEGV: ABORTING!\n"); 507 (void)signal(SIGSEGV, SIG_DFL); 508 (void)kill(0, SIGSEGV); 509 /* NOTREACHED */ 510 } 511 } 512 513 char * 514 rawname(cp) 515 char *cp; 516 { 517 static char rawbuf[MAXPATHLEN]; 518 char *dp = strrchr(cp, '/'); 519 520 if (dp == NULL) 521 return (NULL); 522 *dp = '\0'; 523 (void)snprintf(rawbuf, sizeof rawbuf, "%s/r%s", cp, dp + 1); 524 *dp = '/'; 525 return (rawbuf); 526 } 527 528 /* 529 * obsolete -- 530 * Change set of key letters and ordered arguments into something 531 * getopt(3) will like. 532 */ 533 static void 534 obsolete(argcp, argvp) 535 int *argcp; 536 char **argvp[]; 537 { 538 int argc, flags; 539 char *ap, **argv, *flagsp, **nargv, *p; 540 541 /* Setup. */ 542 argv = *argvp; 543 argc = *argcp; 544 545 /* Return if no arguments or first argument has leading dash. */ 546 ap = argv[1]; 547 if (argc == 1 || *ap == '-') 548 return; 549 550 /* Allocate space for new arguments. */ 551 if ((*argvp = nargv = malloc((argc + 1) * sizeof(char *))) == NULL || 552 (p = flagsp = malloc(strlen(ap) + 2)) == NULL) 553 err(1, NULL); 554 555 *nargv++ = *argv; 556 argv += 2; 557 558 for (flags = 0; *ap; ++ap) { 559 switch (*ap) { 560 case 'B': 561 case 'b': 562 case 'd': 563 case 'f': 564 case 'h': 565 case 's': 566 case 'T': 567 if (*argv == NULL) { 568 warnx("option requires an argument -- %c", *ap); 569 usage(); 570 } 571 if ((nargv[0] = malloc(strlen(*argv) + 2 + 1)) == NULL) 572 err(1, NULL); 573 nargv[0][0] = '-'; 574 nargv[0][1] = *ap; 575 (void)strcpy(&nargv[0][2], *argv); /* XXX strcpy is safe */ 576 ++argv; 577 ++nargv; 578 break; 579 default: 580 if (!flags) { 581 *p++ = '-'; 582 flags = 1; 583 } 584 *p++ = *ap; 585 break; 586 } 587 } 588 589 /* Terminate flags. */ 590 if (flags) { 591 *p = '\0'; 592 *nargv++ = flagsp; 593 } 594 595 /* Copy remaining arguments. */ 596 while (*nargv++ = *argv++); 597 598 /* Update argument count. */ 599 *argcp = nargv - *argvp - 1; 600 } 601
Indexes created Wed Oct 15 16:09:53 GMT 2025