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 /* XXX restore is unable to restore dumps that 172 were created with a blocksize larger than 32K. 173 Possibly a bug in the scsi tape driver. */ 174 if ( ntrec > 32 ) { 175 msg("please choose a blocksize <= 32\n"); 176 exit(X_ABORT); 177 } 178 break; 179 180 case 'B': /* blocks per output file */ 181 blocksperfile = numarg('B', "number of blocks per file", 182 1L, 0L, &argc, &argv); 183 break; 184 185 case 'c': /* Tape is cart. not 9-track */ 186 cartridge = 1; 187 break; 188 189 /* dump level */ 190 case '0': case '1': case '2': case '3': case '4': 191 case '5': case '6': case '7': case '8': case '9': 192 level = *cp; 193 break; 194 195 case 'u': /* update /etc/dumpdates */ 196 uflag = 1; 197 break; 198 199 case 'n': /* notify operators */ 200 notify = 1; 201 break; 202 203 case 'h': 204 honorlevel = numarg('h', "honor level", 205 0L, 10L, &argc, &argv); 206 break; 207 208 default: 209 (void)fprintf(stderr, "bad key '%c'\n", *cp); 210 exit(X_ABORT); 211 } 212 } 213 if (argc < 1) { 214 (void)fprintf(stderr, "Must specify disk or filesystem\n"); 215 exit(X_ABORT); 216 } 217 disk = *argv++; 218 argc--; 219 if (argc >= 1) { 220 (void)fprintf(stderr, "Unknown arguments to dump:"); 221 while (argc--) 222 (void)fprintf(stderr, " %s", *argv++); 223 (void)fprintf(stderr, "\n"); 224 exit(X_ABORT); 225 } 226 if (Tflag && uflag) { 227 (void)fprintf(stderr, 228 "You cannot use the T and u flags together.\n"); 229 exit(X_ABORT); 230 } 231 if (strcmp(tape, "-") == 0) { 232 pipeout++; 233 tape = "standard output"; 234 } 235 236 if (blocksperfile) 237 blocksperfile = blocksperfile / ntrec * ntrec; /* round down */ 238 else { 239 /* 240 * Determine how to default tape size and density 241 * 242 * density tape size 243 * 9-track 1600 bpi (160 bytes/.1") 2300 ft. 244 * 9-track 6250 bpi (625 bytes/.1") 2300 ft. 245 * cartridge 8000 bpi (100 bytes/.1") 1700 ft. 246 * (450*4 - slop) 247 * hilit19 hits again: " 248 */ 249 if (density == 0) 250 density = cartridge ? 100 : 160; 251 if (tsize == 0) 252 tsize = cartridge ? 1700L*120L : 2300L*120L; 253 } 254 255 if (index(tape, ':')) { 256 host = tape; 257 tape = index(host, ':'); 258 *tape++ = '\0'; 259 #ifdef RDUMP 260 if (index(tape, '\n')) { 261 (void)fprintf(stderr, "invalid characters in tape\n"); 262 exit(X_ABORT); 263 } 264 if (rmthost(host) == 0) 265 exit(X_ABORT); 266 #else 267 (void)fprintf(stderr, "remote dump not enabled\n"); 268 exit(X_ABORT); 269 #endif 270 } 271 (void)setuid(getuid()); /* rmthost() is the only reason to be setuid */ 272 273 if (signal(SIGHUP, SIG_IGN) != SIG_IGN) 274 signal(SIGHUP, sig); 275 if (signal(SIGTRAP, SIG_IGN) != SIG_IGN) 276 signal(SIGTRAP, sig); 277 if (signal(SIGFPE, SIG_IGN) != SIG_IGN) 278 signal(SIGFPE, sig); 279 if (signal(SIGBUS, SIG_IGN) != SIG_IGN) 280 signal(SIGBUS, sig); 281 if (signal(SIGSEGV, SIG_IGN) != SIG_IGN) 282 signal(SIGSEGV, sig); 283 if (signal(SIGTERM, SIG_IGN) != SIG_IGN) 284 signal(SIGTERM, sig); 285 if (signal(SIGINT, interrupt) == SIG_IGN) 286 signal(SIGINT, SIG_IGN); 287 288 set_operators(); /* /etc/group snarfed */ 289 getfstab(); /* /etc/fstab snarfed */ 290 /* 291 * disk can be either the full special file name, 292 * the suffix of the special file name, 293 * the special name missing the leading '/', 294 * the file system name with or without the leading '/'. 295 */ 296 dt = fstabsearch(disk); 297 if (dt != NULL) { 298 disk = rawname(dt->fs_spec); 299 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN); 300 (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN); 301 } else { 302 (void)strncpy(spcl.c_dev, disk, NAMELEN); 303 (void)strncpy(spcl.c_filesys, "an unlisted file system", 304 NAMELEN); 305 } 306 spcl.c_dev[NAMELEN-1]='\0'; 307 spcl.c_filesys[NAMELEN-1]='\0'; 308 (void)strcpy(spcl.c_label, "none"); 309 (void)gethostname(spcl.c_host, NAMELEN); 310 spcl.c_level = level - '0'; 311 spcl.c_type = TS_TAPE; 312 if (!Tflag) 313 getdumptime(); /* /etc/dumpdates snarfed */ 314 315 msg("Date of this level %c dump: %s", level, 316 spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date)); 317 msg("Date of last level %c dump: %s", lastlevel, 318 spcl.c_ddate == 0 ? "the epoch\n" : ctime(&spcl.c_ddate)); 319 msg("Dumping %s ", disk); 320 if (dt != NULL) 321 msgtail("(%s) ", dt->fs_file); 322 if (host) 323 msgtail("to %s on host %s\n", tape, host); 324 else 325 msgtail("to %s\n", tape); 326 327 if ((diskfd = open(disk, O_RDONLY)) < 0) { 328 msg("Cannot open %s\n", disk); 329 exit(X_ABORT); 330 } 331 sync(); 332 sblock = (struct fs *)sblock_buf; 333 bread(SBOFF, (char *) sblock, SBSIZE); 334 if (sblock->fs_magic != FS_MAGIC) 335 quit("bad sblock magic number\n"); 336 dev_bsize = sblock->fs_fsize / fsbtodb(sblock, 1); 337 dev_bshift = ffs(dev_bsize) - 1; 338 if (dev_bsize != (1 << dev_bshift)) 339 quit("dev_bsize (%d) is not a power of 2", dev_bsize); 340 tp_bshift = ffs(TP_BSIZE) - 1; 341 if (TP_BSIZE != (1 << tp_bshift)) 342 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE); 343 #ifdef FS_44INODEFMT 344 if (sblock->fs_inodefmt >= FS_44INODEFMT) 345 spcl.c_flags |= DR_NEWINODEFMT; 346 #endif 347 maxino = sblock->fs_ipg * sblock->fs_ncg; 348 mapsize = roundup(howmany(maxino, NBBY), TP_BSIZE); 349 usedinomap = (char *)calloc((unsigned) mapsize, sizeof(char)); 350 dumpdirmap = (char *)calloc((unsigned) mapsize, sizeof(char)); 351 dumpinomap = (char *)calloc((unsigned) mapsize, sizeof(char)); 352 tapesize = 3 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1); 353 354 nonodump = spcl.c_level < honorlevel; 355 356 msg("mapping (Pass I) [regular files]\n"); 357 anydirskipped = mapfiles(maxino, &tapesize); 358 359 msg("mapping (Pass II) [directories]\n"); 360 while (anydirskipped) { 361 anydirskipped = mapdirs(maxino, &tapesize); 362 } 363 364 if (pipeout) { 365 tapesize += 10; /* 10 trailer blocks */ 366 msg("estimated %ld tape blocks.\n", tapesize); 367 } else { 368 double fetapes; 369 370 if (blocksperfile) 371 fetapes = (double) tapesize / blocksperfile; 372 else if (cartridge) { 373 /* Estimate number of tapes, assuming streaming stops at 374 the end of each block written, and not in mid-block. 375 Assume no erroneous blocks; this can be compensated 376 for with an artificially low tape size. */ 377 fetapes = 378 ( (double) tapesize /* blocks */ 379 * TP_BSIZE /* bytes/block */ 380 * (1.0/density) /* 0.1" / byte " */ 381 + 382 (double) tapesize /* blocks */ 383 * (1.0/ntrec) /* streaming-stops per block */ 384 * 15.48 /* 0.1" / streaming-stop " */ 385 ) * (1.0 / tsize ); /* tape / 0.1" " */ 386 } else { 387 /* Estimate number of tapes, for old fashioned 9-track 388 tape */ 389 int tenthsperirg = (density == 625) ? 3 : 7; 390 fetapes = 391 ( (double) tapesize /* blocks */ 392 * TP_BSIZE /* bytes / block */ 393 * (1.0/density) /* 0.1" / byte " */ 394 + 395 (double) tapesize /* blocks */ 396 * (1.0/ntrec) /* IRG's / block */ 397 * tenthsperirg /* 0.1" / IRG " */ 398 ) * (1.0 / tsize ); /* tape / 0.1" " */ 399 } 400 etapes = fetapes; /* truncating assignment */ 401 etapes++; 402 /* count the dumped inodes map on each additional tape */ 403 tapesize += (etapes - 1) * 404 (howmany(mapsize * sizeof(char), TP_BSIZE) + 1); 405 tapesize += etapes + 10; /* headers + 10 trailer blks */ 406 msg("estimated %ld tape blocks on %3.2f tape(s).\n", 407 tapesize, fetapes); 408 } 409 410 /* 411 * Allocate tape buffer. 412 */ 413 if (!alloctape()) 414 quit("can't allocate tape buffers - try a smaller blocking factor.\n"); 415 416 startnewtape(1); 417 (void)time((time_t *)&(tstart_writing)); 418 dumpmap(usedinomap, TS_CLRI, maxino - 1); 419 420 msg("dumping (Pass III) [directories]\n"); 421 dirty = 0; /* XXX just to get gcc to shut up */ 422 for (map = dumpdirmap, ino = 1; ino < maxino; ino++) { 423 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */ 424 dirty = *map++; 425 else 426 dirty >>= 1; 427 if ((dirty & 1) == 0) 428 continue; 429 /* 430 * Skip directory inodes deleted and maybe reallocated 431 */ 432 dp = getino(ino); 433 if ((dp->di_mode & IFMT) != IFDIR) 434 continue; 435 (void)dumpino(dp, ino); 436 } 437 438 msg("dumping (Pass IV) [regular files]\n"); 439 for (map = dumpinomap, ino = 1; ino < maxino; ino++) { 440 int mode; 441 442 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */ 443 dirty = *map++; 444 else 445 dirty >>= 1; 446 if ((dirty & 1) == 0) 447 continue; 448 /* 449 * Skip inodes deleted and reallocated as directories. 450 */ 451 dp = getino(ino); 452 mode = dp->di_mode & IFMT; 453 if (mode == IFDIR) 454 continue; 455 (void)dumpino(dp, ino); 456 } 457 458 (void)time((time_t *)&(tend_writing)); 459 spcl.c_type = TS_END; 460 for (i = 0; i < ntrec; i++) 461 writeheader(maxino - 1); 462 if (pipeout) 463 msg("DUMP: %ld tape blocks\n", spcl.c_tapea); 464 else 465 msg("DUMP: %ld tape blocks on %d volumes(s)\n", 466 spcl.c_tapea, spcl.c_volume); 467 468 /* report dump performance, avoid division through zero */ 469 if (tend_writing - tstart_writing == 0) 470 msg("finished in less than a second\n"); 471 else 472 msg("finished in %d seconds, throughput %d KBytes/sec\n", 473 tend_writing - tstart_writing, 474 spcl.c_tapea / (tend_writing - tstart_writing)); 475 476 putdumptime(); 477 trewind(); 478 broadcast("DUMP IS DONE!\7\7\n"); 479 msg("DUMP IS DONE\n"); 480 Exit(X_FINOK); 481 /* NOTREACHED */ 482 } 483 484 /* 485 * Pick up a numeric argument. It must be nonnegative and in the given 486 * range (except that a vmax of 0 means unlimited). 487 */ 488 static long 489 numarg(letter, meaning, vmin, vmax, pargc, pargv) 490 int letter; 491 char *meaning; 492 long vmin, vmax; 493 int *pargc; 494 char ***pargv; 495 { 496 register char *p; 497 long val; 498 char *str; 499 500 if (--*pargc < 0) 501 missingarg(letter, meaning); 502 str = *(*pargv)++; 503 for (p = str; *p; p++) 504 if (!isdigit(*p)) 505 goto bad; 506 val = atol(str); 507 if (val < vmin || (vmax && val > vmax)) 508 goto bad; 509 return (val); 510 511 bad: 512 (void)fprintf(stderr, "bad '%c' (%s) value \"%s\"\n", 513 letter, meaning, str); 514 exit(X_ABORT); 515 } 516 517 static void 518 missingarg(letter, meaning) 519 int letter; 520 char *meaning; 521 { 522 523 (void)fprintf(stderr, "The '%c' flag (%s) requires an argument\n", 524 letter, meaning); 525 exit(X_ABORT); 526 } 527 528 void 529 sig(signo) 530 int signo; 531 { 532 switch(signo) { 533 case SIGALRM: 534 case SIGBUS: 535 case SIGFPE: 536 case SIGHUP: 537 case SIGTERM: 538 case SIGTRAP: 539 if (pipeout) 540 quit("Signal on pipe: cannot recover\n"); 541 msg("Rewriting attempted as response to unknown signal.\n"); 542 (void)fflush(stderr); 543 (void)fflush(stdout); 544 close_rewind(); 545 exit(X_REWRITE); 546 /* NOTREACHED */ 547 case SIGSEGV: 548 msg("SIGSEGV: ABORTING!\n"); 549 (void)signal(SIGSEGV, SIG_DFL); 550 (void)kill(0, SIGSEGV); 551 /* NOTREACHED */ 552 } 553 } 554 555 char * 556 rawname(cp) 557 char *cp; 558 { 559 static char rawbuf[MAXPATHLEN]; 560 char *dp = rindex(cp, '/'); 561 562 if (dp == NULL) 563 return (NULL); 564 *dp = '\0'; 565 (void)strncpy(rawbuf, cp, MAXPATHLEN - 1); 566 rawbuf[MAXPATHLEN-1] = '\0'; 567 *dp = '/'; 568 (void)strncat(rawbuf, "/r", MAXPATHLEN - 1 - strlen(rawbuf)); 569 (void)strncat(rawbuf, dp + 1, MAXPATHLEN - 1 - strlen(rawbuf)); 570 return (rawbuf); 571 } 572 573 #ifdef sunos 574 const char * 575 strerror(errnum) 576 int errnum; 577 { 578 extern int sys_nerr; 579 extern const char *const sys_errlist[]; 580 581 if (errnum < sys_nerr) 582 return (sys_errlist[errnum]); 583 else 584 return ("bogus errno in strerror"); 585 } 586 #endif 587