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 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #ifndef lint 31 static const char copyright[] = 32 "@(#) Copyright (c) 1980, 1991, 1993, 1994\n\ 33 The Regents of the University of California. All rights reserved.\n"; 34 #endif /* not lint */ 35 36 #ifndef lint 37 #if 0 38 static char sccsid[] = "@(#)main.c 8.6 (Berkeley) 5/1/95"; 39 #endif 40 static const char rcsid[] = 41 "$FreeBSD$"; 42 #endif /* not lint */ 43 44 #include <sys/param.h> 45 #include <sys/stat.h> 46 #include <sys/time.h> 47 #include <sys/mount.h> 48 #include <sys/disklabel.h> 49 50 #include <ufs/ufs/dinode.h> 51 #include <ufs/ufs/ufsmount.h> 52 #include <ufs/ffs/fs.h> 53 54 #include <protocols/dumprestore.h> 55 56 #include <ctype.h> 57 #include <err.h> 58 #include <errno.h> 59 #include <fcntl.h> 60 #include <fstab.h> 61 #include <limits.h> 62 #include <signal.h> 63 #include <stdint.h> 64 #include <stdio.h> 65 #include <stdlib.h> 66 #include <string.h> 67 #include <timeconv.h> 68 #include <unistd.h> 69 70 #include "dump.h" 71 #include "pathnames.h" 72 73 int notify = 0; /* notify operator flag */ 74 int snapdump = 0; /* dumping live filesystem, so use snapshot */ 75 int blockswritten = 0; /* number of blocks written on current tape */ 76 int tapeno = 0; /* current tape number */ 77 int density = 0; /* density in bytes/0.1" " <- this is for hilit19 */ 78 int ntrec = NTREC; /* # tape blocks in each tape record */ 79 int cartridge = 0; /* Assume non-cartridge tape */ 80 int cachesize = 0; /* block cache size (in bytes), defaults to 0 */ 81 long dev_bsize = 1; /* recalculated below */ 82 long blocksperfile; /* output blocks per file */ 83 char *host = NULL; /* remote host (if any) */ 84 85 /* 86 * Possible superblock locations ordered from most to least likely. 87 */ 88 static int sblock_try[] = SBLOCKSEARCH; 89 90 static char *getmntpt(char *, int *); 91 static long numarg(const char *, long, long); 92 static void obsolete(int *, char **[]); 93 static void usage(void) __dead2; 94 95 int 96 main(int argc, char *argv[]) 97 { 98 struct stat sb; 99 ino_t ino; 100 int dirty; 101 union dinode *dp; 102 struct fstab *dt; 103 char *map, *mntpt; 104 int ch, mode, mntflags; 105 int i, anydirskipped, bflag = 0, Tflag = 0, honorlevel = 1; 106 int just_estimate = 0; 107 ino_t maxino; 108 char *tmsg; 109 110 spcl.c_date = _time_to_time64(time(NULL)); 111 112 tsize = 0; /* Default later, based on 'c' option for cart tapes */ 113 dumpdates = _PATH_DUMPDATES; 114 popenout = NULL; 115 tape = NULL; 116 temp = _PATH_DTMP; 117 if (TP_BSIZE / DEV_BSIZE == 0 || TP_BSIZE % DEV_BSIZE != 0) 118 quit("TP_BSIZE must be a multiple of DEV_BSIZE\n"); 119 level = '0'; 120 121 if (argc < 2) 122 usage(); 123 124 obsolete(&argc, &argv); 125 while ((ch = getopt(argc, argv, 126 "0123456789aB:b:C:cD:d:f:h:LnP:Ss:T:uWw")) != -1) 127 switch (ch) { 128 /* dump level */ 129 case '0': case '1': case '2': case '3': case '4': 130 case '5': case '6': case '7': case '8': case '9': 131 level = ch; 132 break; 133 134 case 'a': /* `auto-size', Write to EOM. */ 135 unlimited = 1; 136 break; 137 138 case 'B': /* blocks per output file */ 139 blocksperfile = numarg("number of blocks per file", 140 1L, 0L); 141 break; 142 143 case 'b': /* blocks per tape write */ 144 ntrec = numarg("number of blocks per write", 145 1L, 1000L); 146 break; 147 148 case 'C': 149 cachesize = numarg("cachesize", 0, 0) * 1024 * 1024; 150 break; 151 152 case 'c': /* Tape is cart. not 9-track */ 153 cartridge = 1; 154 break; 155 156 case 'D': 157 dumpdates = optarg; 158 break; 159 160 case 'd': /* density, in bits per inch */ 161 density = numarg("density", 10L, 327670L) / 10; 162 if (density >= 625 && !bflag) 163 ntrec = HIGHDENSITYTREC; 164 break; 165 166 case 'f': /* output file */ 167 if (popenout != NULL) 168 errx(X_STARTUP, "You cannot use the P and f " 169 "flags together.\n"); 170 tape = optarg; 171 break; 172 173 case 'h': 174 honorlevel = numarg("honor level", 0L, 10L); 175 break; 176 177 case 'L': 178 snapdump = 1; 179 break; 180 181 case 'n': /* notify operators */ 182 notify = 1; 183 break; 184 185 case 'P': 186 if (tape != NULL) 187 errx(X_STARTUP, "You cannot use the P and f " 188 "flags together.\n"); 189 popenout = optarg; 190 break; 191 192 case 'S': /* exit after estimating # of tapes */ 193 just_estimate = 1; 194 break; 195 196 case 's': /* tape size, feet */ 197 tsize = numarg("tape size", 1L, 0L) * 12 * 10; 198 break; 199 200 case 'T': /* time of last dump */ 201 spcl.c_ddate = unctime(optarg); 202 if (spcl.c_ddate < 0) { 203 (void)fprintf(stderr, "bad time \"%s\"\n", 204 optarg); 205 exit(X_STARTUP); 206 } 207 Tflag = 1; 208 lastlevel = '?'; 209 break; 210 211 case 'u': /* update /etc/dumpdates */ 212 uflag = 1; 213 break; 214 215 case 'W': /* what to do */ 216 case 'w': 217 lastdump(ch); 218 exit(X_FINOK); /* do nothing else */ 219 220 default: 221 usage(); 222 } 223 argc -= optind; 224 argv += optind; 225 226 if (argc < 1) { 227 (void)fprintf(stderr, "Must specify disk or file system\n"); 228 exit(X_STARTUP); 229 } 230 disk = *argv++; 231 argc--; 232 if (argc >= 1) { 233 (void)fprintf(stderr, "Unknown arguments to dump:"); 234 while (argc--) 235 (void)fprintf(stderr, " %s", *argv++); 236 (void)fprintf(stderr, "\n"); 237 exit(X_STARTUP); 238 } 239 if (Tflag && uflag) { 240 (void)fprintf(stderr, 241 "You cannot use the T and u flags together.\n"); 242 exit(X_STARTUP); 243 } 244 if (popenout) { 245 tape = "child pipeline process"; 246 } else if (tape == NULL && (tape = getenv("TAPE")) == NULL) 247 tape = _PATH_DEFTAPE; 248 if (strcmp(tape, "-") == 0) { 249 pipeout++; 250 tape = "standard output"; 251 } 252 253 if (blocksperfile) 254 blocksperfile = blocksperfile / ntrec * ntrec; /* round down */ 255 else if (!unlimited) { 256 /* 257 * Determine how to default tape size and density 258 * 259 * density tape size 260 * 9-track 1600 bpi (160 bytes/.1") 2300 ft. 261 * 9-track 6250 bpi (625 bytes/.1") 2300 ft. 262 * cartridge 8000 bpi (100 bytes/.1") 1700 ft. 263 * (450*4 - slop) 264 * hilit19 hits again: " 265 */ 266 if (density == 0) 267 density = cartridge ? 100 : 160; 268 if (tsize == 0) 269 tsize = cartridge ? 1700L*120L : 2300L*120L; 270 } 271 272 if (strchr(tape, ':')) { 273 host = tape; 274 tape = strchr(host, ':'); 275 *tape++ = '\0'; 276 #ifdef RDUMP 277 if (index(tape, '\n')) { 278 (void)fprintf(stderr, "invalid characters in tape\n"); 279 exit(X_STARTUP); 280 } 281 if (rmthost(host) == 0) 282 exit(X_STARTUP); 283 #else 284 (void)fprintf(stderr, "remote dump not enabled\n"); 285 exit(X_STARTUP); 286 #endif 287 } 288 (void)setuid(getuid()); /* rmthost() is the only reason to be setuid */ 289 290 if (signal(SIGHUP, SIG_IGN) != SIG_IGN) 291 signal(SIGHUP, sig); 292 if (signal(SIGTRAP, SIG_IGN) != SIG_IGN) 293 signal(SIGTRAP, sig); 294 if (signal(SIGFPE, SIG_IGN) != SIG_IGN) 295 signal(SIGFPE, sig); 296 if (signal(SIGBUS, SIG_IGN) != SIG_IGN) 297 signal(SIGBUS, sig); 298 if (signal(SIGSEGV, SIG_IGN) != SIG_IGN) 299 signal(SIGSEGV, sig); 300 if (signal(SIGTERM, SIG_IGN) != SIG_IGN) 301 signal(SIGTERM, sig); 302 if (signal(SIGINT, interrupt) == SIG_IGN) 303 signal(SIGINT, SIG_IGN); 304 305 dump_getfstab(); /* /etc/fstab snarfed */ 306 /* 307 * disk can be either the full special file name, 308 * the suffix of the special file name, 309 * the special name missing the leading '/', 310 * the file system name with or without the leading '/'. 311 */ 312 dt = fstabsearch(disk); 313 if (dt != NULL) { 314 disk = rawname(dt->fs_spec); 315 if (disk == NULL) 316 errx(X_STARTUP, "%s: unknown file system", dt->fs_spec); 317 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN); 318 (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN); 319 } else { 320 (void)strncpy(spcl.c_dev, disk, NAMELEN); 321 (void)strncpy(spcl.c_filesys, "an unlisted file system", 322 NAMELEN); 323 } 324 spcl.c_dev[NAMELEN-1]='\0'; 325 spcl.c_filesys[NAMELEN-1]='\0'; 326 327 if ((mntpt = getmntpt(disk, &mntflags)) != 0) { 328 if (mntflags & MNT_RDONLY) { 329 if (snapdump != 0) { 330 msg("WARNING: %s\n", 331 "-L ignored for read-only filesystem."); 332 snapdump = 0; 333 } 334 } else if (snapdump == 0) { 335 msg("WARNING: %s\n", 336 "should use -L when dumping live read-write " 337 "filesystems!"); 338 } else { 339 char snapname[BUFSIZ], snapcmd[BUFSIZ]; 340 341 snprintf(snapname, sizeof snapname, "%s/.snap", mntpt); 342 if ((stat(snapname, &sb) < 0) || !S_ISDIR(sb.st_mode)) { 343 msg("WARNING: %s %s\n", 344 "-L requested but snapshot location", 345 snapname); 346 msg(" %s: %s\n", 347 "is not a directory", 348 "dump downgraded, -L ignored"); 349 snapdump = 0; 350 } else { 351 snprintf(snapname, sizeof snapname, 352 "%s/.snap/dump_snapshot", mntpt); 353 snprintf(snapcmd, sizeof snapcmd, "%s %s %s", 354 _PATH_MKSNAP_FFS, mntpt, snapname); 355 unlink(snapname); 356 if (system(snapcmd) != 0) 357 errx(X_STARTUP, "Cannot create %s: %s\n", 358 snapname, strerror(errno)); 359 if ((diskfd = open(snapname, O_RDONLY)) < 0) { 360 unlink(snapname); 361 errx(X_STARTUP, "Cannot open %s: %s\n", 362 snapname, strerror(errno)); 363 } 364 unlink(snapname); 365 if (fstat(diskfd, &sb) != 0) 366 err(X_STARTUP, "%s: stat", snapname); 367 spcl.c_date = _time_to_time64(sb.st_mtime); 368 } 369 } 370 } else if (snapdump != 0) { 371 msg("WARNING: Cannot use -L on an unmounted filesystem.\n"); 372 snapdump = 0; 373 } 374 if (snapdump == 0) { 375 if ((diskfd = open(disk, O_RDONLY)) < 0) 376 err(X_STARTUP, "Cannot open %s", disk); 377 if (fstat(diskfd, &sb) != 0) 378 err(X_STARTUP, "%s: stat", disk); 379 if (S_ISDIR(sb.st_mode)) 380 errx(X_STARTUP, "%s: unknown file system", disk); 381 } 382 383 (void)strcpy(spcl.c_label, "none"); 384 (void)gethostname(spcl.c_host, NAMELEN); 385 spcl.c_level = level - '0'; 386 spcl.c_type = TS_TAPE; 387 388 if (spcl.c_date == 0) { 389 tmsg = "the epoch\n"; 390 } else { 391 time_t t = _time64_to_time(spcl.c_date); 392 tmsg = ctime(&t); 393 } 394 msg("Date of this level %c dump: %s", level, tmsg); 395 396 if (!Tflag) 397 getdumptime(); /* /etc/dumpdates snarfed */ 398 if (spcl.c_ddate == 0) { 399 tmsg = "the epoch\n"; 400 } else { 401 time_t t = _time64_to_time(spcl.c_ddate); 402 tmsg = ctime(&t); 403 } 404 msg("Date of last level %c dump: %s", lastlevel, tmsg); 405 406 msg("Dumping %s%s ", snapdump ? "snapshot of ": "", disk); 407 if (dt != NULL) 408 msgtail("(%s) ", dt->fs_file); 409 if (host) 410 msgtail("to %s on host %s\n", tape, host); 411 else 412 msgtail("to %s\n", tape); 413 414 sync(); 415 sblock = (struct fs *)sblock_buf; 416 for (i = 0; sblock_try[i] != -1; i++) { 417 sblock->fs_fsize = SBLOCKSIZE; /* needed in bread */ 418 bread(sblock_try[i] >> dev_bshift, (char *) sblock, SBLOCKSIZE); 419 if ((sblock->fs_magic == FS_UFS1_MAGIC || 420 (sblock->fs_magic == FS_UFS2_MAGIC && 421 sblock->fs_sblockloc == sblock_try[i])) && 422 sblock->fs_bsize <= MAXBSIZE && 423 sblock->fs_bsize >= sizeof(struct fs)) 424 break; 425 } 426 if (sblock_try[i] == -1) 427 quit("Cannot find file system superblock\n"); 428 dev_bsize = sblock->fs_fsize / fsbtodb(sblock, 1); 429 dev_bshift = ffs(dev_bsize) - 1; 430 if (dev_bsize != (1 << dev_bshift)) 431 quit("dev_bsize (%ld) is not a power of 2", dev_bsize); 432 tp_bshift = ffs(TP_BSIZE) - 1; 433 if (TP_BSIZE != (1 << tp_bshift)) 434 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE); 435 maxino = sblock->fs_ipg * sblock->fs_ncg; 436 mapsize = roundup(howmany(maxino, CHAR_BIT), TP_BSIZE); 437 usedinomap = (char *)calloc((unsigned) mapsize, sizeof(char)); 438 dumpdirmap = (char *)calloc((unsigned) mapsize, sizeof(char)); 439 dumpinomap = (char *)calloc((unsigned) mapsize, sizeof(char)); 440 tapesize = 3 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1); 441 442 nonodump = spcl.c_level < honorlevel; 443 444 passno = 1; 445 setproctitle("%s: pass 1: regular files", disk); 446 msg("mapping (Pass I) [regular files]\n"); 447 anydirskipped = mapfiles(maxino, &tapesize); 448 449 passno = 2; 450 setproctitle("%s: pass 2: directories", disk); 451 msg("mapping (Pass II) [directories]\n"); 452 while (anydirskipped) { 453 anydirskipped = mapdirs(maxino, &tapesize); 454 } 455 456 if (pipeout || unlimited) { 457 tapesize += 10; /* 10 trailer blocks */ 458 msg("estimated %ld tape blocks.\n", tapesize); 459 } else { 460 double fetapes; 461 462 if (blocksperfile) 463 fetapes = (double) tapesize / blocksperfile; 464 else if (cartridge) { 465 /* Estimate number of tapes, assuming streaming stops at 466 the end of each block written, and not in mid-block. 467 Assume no erroneous blocks; this can be compensated 468 for with an artificially low tape size. */ 469 fetapes = 470 ( (double) tapesize /* blocks */ 471 * TP_BSIZE /* bytes/block */ 472 * (1.0/density) /* 0.1" / byte " */ 473 + 474 (double) tapesize /* blocks */ 475 * (1.0/ntrec) /* streaming-stops per block */ 476 * 15.48 /* 0.1" / streaming-stop " */ 477 ) * (1.0 / tsize ); /* tape / 0.1" " */ 478 } else { 479 /* Estimate number of tapes, for old fashioned 9-track 480 tape */ 481 int tenthsperirg = (density == 625) ? 3 : 7; 482 fetapes = 483 ( (double) tapesize /* blocks */ 484 * TP_BSIZE /* bytes / block */ 485 * (1.0/density) /* 0.1" / byte " */ 486 + 487 (double) tapesize /* blocks */ 488 * (1.0/ntrec) /* IRG's / block */ 489 * tenthsperirg /* 0.1" / IRG " */ 490 ) * (1.0 / tsize ); /* tape / 0.1" " */ 491 } 492 etapes = fetapes; /* truncating assignment */ 493 etapes++; 494 /* count the dumped inodes map on each additional tape */ 495 tapesize += (etapes - 1) * 496 (howmany(mapsize * sizeof(char), TP_BSIZE) + 1); 497 tapesize += etapes + 10; /* headers + 10 trailer blks */ 498 msg("estimated %ld tape blocks on %3.2f tape(s).\n", 499 tapesize, fetapes); 500 } 501 502 /* 503 * If the user only wants an estimate of the number of 504 * tapes, exit now. 505 */ 506 if (just_estimate) 507 exit(0); 508 509 /* 510 * Allocate tape buffer. 511 */ 512 if (!alloctape()) 513 quit( 514 "can't allocate tape buffers - try a smaller blocking factor.\n"); 515 516 startnewtape(1); 517 (void)time((time_t *)&(tstart_writing)); 518 dumpmap(usedinomap, TS_CLRI, maxino - 1); 519 520 passno = 3; 521 setproctitle("%s: pass 3: directories", disk); 522 msg("dumping (Pass III) [directories]\n"); 523 dirty = 0; /* XXX just to get gcc to shut up */ 524 for (map = dumpdirmap, ino = 1; ino < maxino; ino++) { 525 if (((ino - 1) % CHAR_BIT) == 0) /* map is offset by 1 */ 526 dirty = *map++; 527 else 528 dirty >>= 1; 529 if ((dirty & 1) == 0) 530 continue; 531 /* 532 * Skip directory inodes deleted and maybe reallocated 533 */ 534 dp = getino(ino, &mode); 535 if (mode != IFDIR) 536 continue; 537 (void)dumpino(dp, ino); 538 } 539 540 passno = 4; 541 setproctitle("%s: pass 4: regular files", disk); 542 msg("dumping (Pass IV) [regular files]\n"); 543 for (map = dumpinomap, ino = 1; ino < maxino; ino++) { 544 if (((ino - 1) % CHAR_BIT) == 0) /* map is offset by 1 */ 545 dirty = *map++; 546 else 547 dirty >>= 1; 548 if ((dirty & 1) == 0) 549 continue; 550 /* 551 * Skip inodes deleted and reallocated as directories. 552 */ 553 dp = getino(ino, &mode); 554 if (mode == IFDIR) 555 continue; 556 (void)dumpino(dp, ino); 557 } 558 559 (void)time((time_t *)&(tend_writing)); 560 spcl.c_type = TS_END; 561 for (i = 0; i < ntrec; i++) 562 writeheader(maxino - 1); 563 if (pipeout) 564 msg("DUMP: %jd tape blocks\n", (intmax_t)spcl.c_tapea); 565 else 566 msg("DUMP: %jd tape blocks on %d volume%s\n", 567 (intmax_t)spcl.c_tapea, spcl.c_volume, 568 (spcl.c_volume == 1) ? "" : "s"); 569 570 /* report dump performance, avoid division through zero */ 571 if (tend_writing - tstart_writing == 0) 572 msg("finished in less than a second\n"); 573 else 574 msg("finished in %jd seconds, throughput %jd KBytes/sec\n", 575 (intmax_t)tend_writing - tstart_writing, 576 (intmax_t)(spcl.c_tapea / 577 (tend_writing - tstart_writing))); 578 579 putdumptime(); 580 trewind(); 581 broadcast("DUMP IS DONE!\a\a\n"); 582 msg("DUMP IS DONE\n"); 583 Exit(X_FINOK); 584 /* NOTREACHED */ 585 } 586 587 static void 588 usage(void) 589 { 590 fprintf(stderr, 591 "usage: dump [-0123456789acLnSu] [-B records] [-b blocksize] [-C cachesize]\n" 592 " [-D dumpdates] [-d density] [-f file | -P pipecommand] [-h level]\n" 593 " [-s feet] [-T date] filesystem\n" 594 " dump -W | -w\n"); 595 exit(X_STARTUP); 596 } 597 598 /* 599 * Check to see if a disk is currently mounted. 600 */ 601 static char * 602 getmntpt(char *name, int *mntflagsp) 603 { 604 long mntsize, i; 605 struct statfs *mntbuf; 606 607 mntsize = getmntinfo(&mntbuf, MNT_NOWAIT); 608 for (i = 0; i < mntsize; i++) { 609 if (!strcmp(mntbuf[i].f_mntfromname, name)) { 610 *mntflagsp = mntbuf[i].f_flags; 611 return (mntbuf[i].f_mntonname); 612 } 613 } 614 return (0); 615 } 616 617 /* 618 * Pick up a numeric argument. It must be nonnegative and in the given 619 * range (except that a vmax of 0 means unlimited). 620 */ 621 static long 622 numarg(const char *meaning, long vmin, long vmax) 623 { 624 char *p; 625 long val; 626 627 val = strtol(optarg, &p, 10); 628 if (*p) 629 errx(1, "illegal %s -- %s", meaning, optarg); 630 if (val < vmin || (vmax && val > vmax)) 631 errx(1, "%s must be between %ld and %ld", meaning, vmin, vmax); 632 return (val); 633 } 634 635 void 636 sig(int signo) 637 { 638 switch(signo) { 639 case SIGALRM: 640 case SIGBUS: 641 case SIGFPE: 642 case SIGHUP: 643 case SIGTERM: 644 case SIGTRAP: 645 if (pipeout) 646 quit("Signal on pipe: cannot recover\n"); 647 msg("Rewriting attempted as response to unknown signal.\n"); 648 (void)fflush(stderr); 649 (void)fflush(stdout); 650 close_rewind(); 651 exit(X_REWRITE); 652 /* NOTREACHED */ 653 case SIGSEGV: 654 msg("SIGSEGV: ABORTING!\n"); 655 (void)signal(SIGSEGV, SIG_DFL); 656 (void)kill(0, SIGSEGV); 657 /* NOTREACHED */ 658 } 659 } 660 661 char * 662 rawname(char *cp) 663 { 664 struct stat sb; 665 666 /* 667 * Ensure that the device passed in is a raw device. 668 */ 669 if (stat(cp, &sb) == 0 && (sb.st_mode & S_IFMT) == S_IFCHR) 670 return (cp); 671 672 /* 673 * Since there's only one device type now, we can't construct any 674 * better name, so we have to return NULL. 675 */ 676 return (NULL); 677 } 678 679 /* 680 * obsolete -- 681 * Change set of key letters and ordered arguments into something 682 * getopt(3) will like. 683 */ 684 static void 685 obsolete(int *argcp, char **argvp[]) 686 { 687 int argc, flags; 688 char *ap, **argv, *flagsp, **nargv, *p; 689 690 /* Setup. */ 691 argv = *argvp; 692 argc = *argcp; 693 694 /* 695 * Return if no arguments or first argument has leading 696 * dash or slash. 697 */ 698 ap = argv[1]; 699 if (argc == 1 || *ap == '-' || *ap == '/') 700 return; 701 702 /* Allocate space for new arguments. */ 703 if ((*argvp = nargv = malloc((argc + 1) * sizeof(char *))) == NULL || 704 (p = flagsp = malloc(strlen(ap) + 2)) == NULL) 705 err(1, NULL); 706 707 *nargv++ = *argv; 708 argv += 2; 709 710 for (flags = 0; *ap; ++ap) { 711 switch (*ap) { 712 case 'B': 713 case 'b': 714 case 'd': 715 case 'f': 716 case 'D': 717 case 'C': 718 case 'h': 719 case 's': 720 case 'T': 721 if (*argv == NULL) { 722 warnx("option requires an argument -- %c", *ap); 723 usage(); 724 } 725 if ((nargv[0] = malloc(strlen(*argv) + 2 + 1)) == NULL) 726 err(1, NULL); 727 nargv[0][0] = '-'; 728 nargv[0][1] = *ap; 729 (void)strcpy(&nargv[0][2], *argv); 730 ++argv; 731 ++nargv; 732 break; 733 default: 734 if (!flags) { 735 *p++ = '-'; 736 flags = 1; 737 } 738 *p++ = *ap; 739 break; 740 } 741 } 742 743 /* Terminate flags. */ 744 if (flags) { 745 *p = '\0'; 746 *nargv++ = flagsp; 747 } 748 749 /* Copy remaining arguments. */ 750 while ((*nargv++ = *argv++)); 751 752 /* Update argument count. */ 753 *argcp = nargv - *argvp - 1; 754 } 755