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