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 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 static char sccsid[] = "@(#)main.c 8.4 (Berkeley) 4/15/94"; 42 #endif /* not lint */ 43 44 #include <sys/param.h> 45 #include <sys/time.h> 46 #ifdef sunos 47 #include <sys/vnode.h> 48 49 #include <ufs/inode.h> 50 #include <ufs/fs.h> 51 #else 52 #include <ufs/ffs/fs.h> 53 #include <ufs/ufs/dinode.h> 54 #endif 55 56 #include <protocols/dumprestore.h> 57 58 #include <ctype.h> 59 #include <errno.h> 60 #include <fcntl.h> 61 #include <fstab.h> 62 #include <signal.h> 63 #include <stdio.h> 64 #ifdef __STDC__ 65 #include <stdlib.h> 66 #include <string.h> 67 #include <unistd.h> 68 #endif 69 70 #include "dump.h" 71 #include "pathnames.h" 72 73 #ifndef SBOFF 74 #define SBOFF (SBLOCK * DEV_BSIZE) 75 #endif 76 77 int notify = 0; /* notify operator flag */ 78 int blockswritten = 0; /* number of blocks written on current tape */ 79 int tapeno = 0; /* current tape number */ 80 int density = 0; /* density in bytes/0.1" " <- this is for hilit19 */ 81 int ntrec = NTREC; /* # tape blocks in each tape record */ 82 int cartridge = 0; /* Assume non-cartridge tape */ 83 long dev_bsize = 1; /* recalculated below */ 84 long blocksperfile; /* output blocks per file */ 85 char *host = NULL; /* remote host (if any) */ 86 87 static long numarg __P((int, char *, long, long, int *, char ***)); 88 static void missingarg __P((int, char *)) __dead2; 89 90 int 91 main(argc, argv) 92 int argc; 93 char **argv; 94 { 95 register ino_t ino; 96 register int dirty; 97 register struct dinode *dp; 98 register struct fstab *dt; 99 register char *map; 100 register char *cp; 101 int i, anydirskipped, bflag = 0, Tflag = 0, honorlevel = 1; 102 ino_t maxino; 103 104 spcl.c_date = 0; 105 (void)time((time_t *)&spcl.c_date); 106 107 tsize = 0; /* Default later, based on 'c' option for cart tapes */ 108 if ((tape = getenv("TAPE")) == NULL) 109 tape = _PATH_DEFTAPE; 110 dumpdates = _PATH_DUMPDATES; 111 temp = _PATH_DTMP; 112 if (TP_BSIZE / DEV_BSIZE == 0 || TP_BSIZE % DEV_BSIZE != 0) 113 quit("TP_BSIZE must be a multiple of DEV_BSIZE\n"); 114 level = '0'; 115 if (argc == 1) { 116 (void) fprintf(stderr, "Must specify a key.\n"); 117 Exit(X_ABORT); 118 } 119 argv++; 120 argc -= 2; 121 for (cp = *argv++; cp != NULL && *cp != '\0'; cp++) { 122 switch (*cp) { 123 case '-': 124 break; 125 126 case 'w': 127 lastdump('w'); /* tell us only what has to be done */ 128 exit(0); 129 130 case 'W': /* what to do */ 131 lastdump('W'); /* tell us state of what is done */ 132 exit(0); /* do nothing else */ 133 134 case 'f': /* output file */ 135 if (argc < 1) 136 missingarg('f', "output file"); 137 tape = *argv++; 138 argc--; 139 break; 140 141 case 'd': /* density, in bits per inch */ 142 density = numarg('d', "density", 143 10L, 327670L, &argc, &argv) / 10; 144 if (density >= 625 && !bflag) 145 ntrec = HIGHDENSITYTREC; 146 break; 147 148 case 's': /* tape size, feet */ 149 tsize = numarg('s', "size", 150 1L, 0L, &argc, &argv) * 12 * 10; 151 break; 152 153 case 'T': /* time of last dump */ 154 if (argc < 1) 155 missingarg('T', "time of last dump"); 156 spcl.c_ddate = unctime(*argv); 157 if (spcl.c_ddate < 0) { 158 (void)fprintf(stderr, "bad time \"%s\"\n", 159 *argv); 160 exit(X_ABORT); 161 } 162 Tflag = 1; 163 lastlevel = '?'; 164 argc--; 165 argv++; 166 break; 167 168 case 'b': /* blocks per tape write */ 169 ntrec = numarg('b', "number of blocks per write", 170 1L, 1000L, &argc, &argv); 171 /* 172 * XXX 173 * physio(9) currently slices all requests to 174 * 64 KB chunks. So now, if somebody entered 175 * e.g. 96 KB block size here, he would effectively 176 * yield one 64 KB and one 32 KB block, which 177 * restore cannot handle. 178 * Thus we currently enforce pyhsio(9)'s limit 179 * here, too. 180 */ 181 if ( ntrec > 64 ) { 182 msg("please choose a blocksize <= 64\n"); 183 exit(X_ABORT); 184 } 185 break; 186 187 case 'B': /* blocks per output file */ 188 blocksperfile = numarg('B', "number of blocks per file", 189 1L, 0L, &argc, &argv); 190 break; 191 192 case 'c': /* Tape is cart. not 9-track */ 193 cartridge = 1; 194 break; 195 196 case 'a': /* `auto-size', Write to EOM. */ 197 unlimited = 1; 198 break; 199 200 /* dump level */ 201 case '0': case '1': case '2': case '3': case '4': 202 case '5': case '6': case '7': case '8': case '9': 203 level = *cp; 204 break; 205 206 case 'u': /* update /etc/dumpdates */ 207 uflag = 1; 208 break; 209 210 case 'n': /* notify operators */ 211 notify = 1; 212 break; 213 214 case 'h': 215 honorlevel = numarg('h', "honor level", 216 0L, 10L, &argc, &argv); 217 break; 218 219 default: 220 (void)fprintf(stderr, "bad key '%c'\n", *cp); 221 exit(X_ABORT); 222 } 223 } 224 if (argc < 1) { 225 (void)fprintf(stderr, "Must specify disk or filesystem\n"); 226 exit(X_ABORT); 227 } 228 disk = *argv++; 229 argc--; 230 if (argc >= 1) { 231 (void)fprintf(stderr, "Unknown arguments to dump:"); 232 while (argc--) 233 (void)fprintf(stderr, " %s", *argv++); 234 (void)fprintf(stderr, "\n"); 235 exit(X_ABORT); 236 } 237 if (Tflag && uflag) { 238 (void)fprintf(stderr, 239 "You cannot use the T and u flags together.\n"); 240 exit(X_ABORT); 241 } 242 if (strcmp(tape, "-") == 0) { 243 pipeout++; 244 tape = "standard output"; 245 } 246 247 if (blocksperfile) 248 blocksperfile = blocksperfile / ntrec * ntrec; /* round down */ 249 else if (!unlimited) { 250 /* 251 * Determine how to default tape size and density 252 * 253 * density tape size 254 * 9-track 1600 bpi (160 bytes/.1") 2300 ft. 255 * 9-track 6250 bpi (625 bytes/.1") 2300 ft. 256 * cartridge 8000 bpi (100 bytes/.1") 1700 ft. 257 * (450*4 - slop) 258 * hilit19 hits again: " 259 */ 260 if (density == 0) 261 density = cartridge ? 100 : 160; 262 if (tsize == 0) 263 tsize = cartridge ? 1700L*120L : 2300L*120L; 264 } 265 266 if (index(tape, ':')) { 267 host = tape; 268 tape = index(host, ':'); 269 *tape++ = '\0'; 270 #ifdef RDUMP 271 if (index(tape, '\n')) { 272 (void)fprintf(stderr, "invalid characters in tape\n"); 273 exit(X_ABORT); 274 } 275 if (rmthost(host) == 0) 276 exit(X_ABORT); 277 #else 278 (void)fprintf(stderr, "remote dump not enabled\n"); 279 exit(X_ABORT); 280 #endif 281 } 282 (void)setuid(getuid()); /* rmthost() is the only reason to be setuid */ 283 284 if (signal(SIGHUP, SIG_IGN) != SIG_IGN) 285 signal(SIGHUP, sig); 286 if (signal(SIGTRAP, SIG_IGN) != SIG_IGN) 287 signal(SIGTRAP, sig); 288 if (signal(SIGFPE, SIG_IGN) != SIG_IGN) 289 signal(SIGFPE, sig); 290 if (signal(SIGBUS, SIG_IGN) != SIG_IGN) 291 signal(SIGBUS, sig); 292 if (signal(SIGSEGV, SIG_IGN) != SIG_IGN) 293 signal(SIGSEGV, sig); 294 if (signal(SIGTERM, SIG_IGN) != SIG_IGN) 295 signal(SIGTERM, sig); 296 if (signal(SIGINT, interrupt) == SIG_IGN) 297 signal(SIGINT, SIG_IGN); 298 299 set_operators(); /* /etc/group snarfed */ 300 getfstab(); /* /etc/fstab snarfed */ 301 /* 302 * disk can be either the full special file name, 303 * the suffix of the special file name, 304 * the special name missing the leading '/', 305 * the file system name with or without the leading '/'. 306 */ 307 dt = fstabsearch(disk); 308 if (dt != NULL) { 309 disk = rawname(dt->fs_spec); 310 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN); 311 (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN); 312 } else { 313 (void)strncpy(spcl.c_dev, disk, NAMELEN); 314 (void)strncpy(spcl.c_filesys, "an unlisted file system", 315 NAMELEN); 316 } 317 spcl.c_dev[NAMELEN-1]='\0'; 318 spcl.c_filesys[NAMELEN-1]='\0'; 319 (void)strcpy(spcl.c_label, "none"); 320 (void)gethostname(spcl.c_host, NAMELEN); 321 spcl.c_level = level - '0'; 322 spcl.c_type = TS_TAPE; 323 if (!Tflag) 324 getdumptime(); /* /etc/dumpdates snarfed */ 325 326 msg("Date of this level %c dump: %s", level, 327 spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date)); 328 msg("Date of last level %c dump: %s", lastlevel, 329 spcl.c_ddate == 0 ? "the epoch\n" : ctime(&spcl.c_ddate)); 330 msg("Dumping %s ", disk); 331 if (dt != NULL) 332 msgtail("(%s) ", dt->fs_file); 333 if (host) 334 msgtail("to %s on host %s\n", tape, host); 335 else 336 msgtail("to %s\n", tape); 337 338 if ((diskfd = open(disk, O_RDONLY)) < 0) { 339 msg("Cannot open %s\n", disk); 340 exit(X_ABORT); 341 } 342 sync(); 343 sblock = (struct fs *)sblock_buf; 344 bread(SBOFF, (char *) sblock, SBSIZE); 345 if (sblock->fs_magic != FS_MAGIC) 346 quit("bad sblock magic number\n"); 347 dev_bsize = sblock->fs_fsize / fsbtodb(sblock, 1); 348 dev_bshift = ffs(dev_bsize) - 1; 349 if (dev_bsize != (1 << dev_bshift)) 350 quit("dev_bsize (%d) is not a power of 2", dev_bsize); 351 tp_bshift = ffs(TP_BSIZE) - 1; 352 if (TP_BSIZE != (1 << tp_bshift)) 353 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE); 354 #ifdef FS_44INODEFMT 355 if (sblock->fs_inodefmt >= FS_44INODEFMT) 356 spcl.c_flags |= DR_NEWINODEFMT; 357 #endif 358 maxino = sblock->fs_ipg * sblock->fs_ncg; 359 mapsize = roundup(howmany(maxino, NBBY), TP_BSIZE); 360 usedinomap = (char *)calloc((unsigned) mapsize, sizeof(char)); 361 dumpdirmap = (char *)calloc((unsigned) mapsize, sizeof(char)); 362 dumpinomap = (char *)calloc((unsigned) mapsize, sizeof(char)); 363 tapesize = 3 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1); 364 365 nonodump = spcl.c_level < honorlevel; 366 367 msg("mapping (Pass I) [regular files]\n"); 368 anydirskipped = mapfiles(maxino, &tapesize); 369 370 msg("mapping (Pass II) [directories]\n"); 371 while (anydirskipped) { 372 anydirskipped = mapdirs(maxino, &tapesize); 373 } 374 375 if (pipeout || unlimited) { 376 tapesize += 10; /* 10 trailer blocks */ 377 msg("estimated %ld tape blocks.\n", tapesize); 378 } else { 379 double fetapes; 380 381 if (blocksperfile) 382 fetapes = (double) tapesize / blocksperfile; 383 else if (cartridge) { 384 /* Estimate number of tapes, assuming streaming stops at 385 the end of each block written, and not in mid-block. 386 Assume no erroneous blocks; this can be compensated 387 for with an artificially low tape size. */ 388 fetapes = 389 ( (double) tapesize /* blocks */ 390 * TP_BSIZE /* bytes/block */ 391 * (1.0/density) /* 0.1" / byte " */ 392 + 393 (double) tapesize /* blocks */ 394 * (1.0/ntrec) /* streaming-stops per block */ 395 * 15.48 /* 0.1" / streaming-stop " */ 396 ) * (1.0 / tsize ); /* tape / 0.1" " */ 397 } else { 398 /* Estimate number of tapes, for old fashioned 9-track 399 tape */ 400 int tenthsperirg = (density == 625) ? 3 : 7; 401 fetapes = 402 ( (double) tapesize /* blocks */ 403 * TP_BSIZE /* bytes / block */ 404 * (1.0/density) /* 0.1" / byte " */ 405 + 406 (double) tapesize /* blocks */ 407 * (1.0/ntrec) /* IRG's / block */ 408 * tenthsperirg /* 0.1" / IRG " */ 409 ) * (1.0 / tsize ); /* tape / 0.1" " */ 410 } 411 etapes = fetapes; /* truncating assignment */ 412 etapes++; 413 /* count the dumped inodes map on each additional tape */ 414 tapesize += (etapes - 1) * 415 (howmany(mapsize * sizeof(char), TP_BSIZE) + 1); 416 tapesize += etapes + 10; /* headers + 10 trailer blks */ 417 msg("estimated %ld tape blocks on %3.2f tape(s).\n", 418 tapesize, fetapes); 419 } 420 421 /* 422 * Allocate tape buffer. 423 */ 424 if (!alloctape()) 425 quit("can't allocate tape buffers - try a smaller blocking factor.\n"); 426 427 startnewtape(1); 428 (void)time((time_t *)&(tstart_writing)); 429 dumpmap(usedinomap, TS_CLRI, maxino - 1); 430 431 msg("dumping (Pass III) [directories]\n"); 432 dirty = 0; /* XXX just to get gcc to shut up */ 433 for (map = dumpdirmap, ino = 1; ino < maxino; ino++) { 434 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */ 435 dirty = *map++; 436 else 437 dirty >>= 1; 438 if ((dirty & 1) == 0) 439 continue; 440 /* 441 * Skip directory inodes deleted and maybe reallocated 442 */ 443 dp = getino(ino); 444 if ((dp->di_mode & IFMT) != IFDIR) 445 continue; 446 (void)dumpino(dp, ino); 447 } 448 449 msg("dumping (Pass IV) [regular files]\n"); 450 for (map = dumpinomap, ino = 1; ino < maxino; ino++) { 451 int mode; 452 453 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */ 454 dirty = *map++; 455 else 456 dirty >>= 1; 457 if ((dirty & 1) == 0) 458 continue; 459 /* 460 * Skip inodes deleted and reallocated as directories. 461 */ 462 dp = getino(ino); 463 mode = dp->di_mode & IFMT; 464 if (mode == IFDIR) 465 continue; 466 (void)dumpino(dp, ino); 467 } 468 469 (void)time((time_t *)&(tend_writing)); 470 spcl.c_type = TS_END; 471 for (i = 0; i < ntrec; i++) 472 writeheader(maxino - 1); 473 if (pipeout) 474 msg("DUMP: %ld tape blocks\n", spcl.c_tapea); 475 else 476 msg("DUMP: %ld tape blocks on %d volumes(s)\n", 477 spcl.c_tapea, spcl.c_volume); 478 479 /* report dump performance, avoid division through zero */ 480 if (tend_writing - tstart_writing == 0) 481 msg("finished in less than a second\n"); 482 else 483 msg("finished in %d seconds, throughput %d KBytes/sec\n", 484 tend_writing - tstart_writing, 485 spcl.c_tapea / (tend_writing - tstart_writing)); 486 487 putdumptime(); 488 trewind(); 489 broadcast("DUMP IS DONE!\7\7\n"); 490 msg("DUMP IS DONE\n"); 491 Exit(X_FINOK); 492 /* NOTREACHED */ 493 } 494 495 /* 496 * Pick up a numeric argument. It must be nonnegative and in the given 497 * range (except that a vmax of 0 means unlimited). 498 */ 499 static long 500 numarg(letter, meaning, vmin, vmax, pargc, pargv) 501 int letter; 502 char *meaning; 503 long vmin, vmax; 504 int *pargc; 505 char ***pargv; 506 { 507 register char *p; 508 long val; 509 char *str; 510 511 if (--*pargc < 0) 512 missingarg(letter, meaning); 513 str = *(*pargv)++; 514 for (p = str; *p; p++) 515 if (!isdigit(*p)) 516 goto bad; 517 val = atol(str); 518 if (val < vmin || (vmax && val > vmax)) 519 goto bad; 520 return (val); 521 522 bad: 523 (void)fprintf(stderr, "bad '%c' (%s) value \"%s\"\n", 524 letter, meaning, str); 525 exit(X_ABORT); 526 } 527 528 static void 529 missingarg(letter, meaning) 530 int letter; 531 char *meaning; 532 { 533 534 (void)fprintf(stderr, "The '%c' flag (%s) requires an argument\n", 535 letter, meaning); 536 exit(X_ABORT); 537 } 538 539 void 540 sig(signo) 541 int signo; 542 { 543 switch(signo) { 544 case SIGALRM: 545 case SIGBUS: 546 case SIGFPE: 547 case SIGHUP: 548 case SIGTERM: 549 case SIGTRAP: 550 if (pipeout) 551 quit("Signal on pipe: cannot recover\n"); 552 msg("Rewriting attempted as response to unknown signal.\n"); 553 (void)fflush(stderr); 554 (void)fflush(stdout); 555 close_rewind(); 556 exit(X_REWRITE); 557 /* NOTREACHED */ 558 case SIGSEGV: 559 msg("SIGSEGV: ABORTING!\n"); 560 (void)signal(SIGSEGV, SIG_DFL); 561 (void)kill(0, SIGSEGV); 562 /* NOTREACHED */ 563 } 564 } 565 566 char * 567 rawname(cp) 568 char *cp; 569 { 570 static char rawbuf[MAXPATHLEN]; 571 char *dp = rindex(cp, '/'); 572 573 if (dp == NULL) 574 return (NULL); 575 *dp = '\0'; 576 (void)strncpy(rawbuf, cp, MAXPATHLEN - 1); 577 rawbuf[MAXPATHLEN-1] = '\0'; 578 *dp = '/'; 579 (void)strncat(rawbuf, "/r", MAXPATHLEN - 1 - strlen(rawbuf)); 580 (void)strncat(rawbuf, dp + 1, MAXPATHLEN - 1 - strlen(rawbuf)); 581 return (rawbuf); 582 } 583 584 #ifdef sunos 585 const char * 586 strerror(errnum) 587 int errnum; 588 { 589 extern int sys_nerr; 590 extern const char *const sys_errlist[]; 591 592 if (errnum < sys_nerr) 593 return (sys_errlist[errnum]); 594 else 595 return ("bogus errno in strerror"); 596 } 597 #endif 598