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