1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1980, 1991, 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #ifndef lint 33 static const char copyright[] = 34 "@(#) Copyright (c) 1980, 1991, 1993, 1994\n\ 35 The Regents of the University of California. All rights reserved.\n"; 36 #endif /* not lint */ 37 38 #ifndef lint 39 #if 0 40 static char sccsid[] = "@(#)main.c 8.6 (Berkeley) 5/1/95"; 41 #endif 42 static const char rcsid[] = 43 "$FreeBSD$"; 44 #endif /* not lint */ 45 46 #include <sys/param.h> 47 #include <sys/stat.h> 48 #include <sys/mount.h> 49 #include <sys/disklabel.h> 50 51 #include <ufs/ufs/dinode.h> 52 #include <ufs/ufs/ufsmount.h> 53 #include <ufs/ffs/fs.h> 54 55 #include <protocols/dumprestore.h> 56 57 #include <ctype.h> 58 #include <err.h> 59 #include <errno.h> 60 #include <fcntl.h> 61 #include <fstab.h> 62 #include <libufs.h> 63 #include <limits.h> 64 #include <signal.h> 65 #include <stdint.h> 66 #include <stdio.h> 67 #include <stdlib.h> 68 #include <string.h> 69 #include <time.h> 70 #include <timeconv.h> 71 #include <unistd.h> 72 73 #include "dump.h" 74 #include "pathnames.h" 75 76 int notify = 0; /* notify operator flag */ 77 int snapdump = 0; /* dumping live filesystem, so use snapshot */ 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 int cachesize = 0; /* block cache size (in bytes), defaults to 0 */ 84 long dev_bsize = 1; /* recalculated below */ 85 long blocksperfile; /* output blocks per file */ 86 char *host = NULL; /* remote host (if any) */ 87 88 static char *getmntpt(char *, int *); 89 static long numarg(const char *, long, long); 90 static void obsolete(int *, char **[]); 91 static void usage(void) __dead2; 92 93 int 94 main(int argc, char *argv[]) 95 { 96 struct stat sb; 97 ino_t ino; 98 int dirty; 99 union dinode *dp; 100 struct fstab *dt; 101 char *map, *mntpt; 102 int ch, mode, mntflags; 103 int i, ret, anydirskipped, bflag = 0, Tflag = 0, honorlevel = 1; 104 int just_estimate = 0; 105 ino_t maxino; 106 int c_count=0; 107 char *tmsg; 108 109 spcl.c_date = _time_to_time64(time(NULL)); 110 111 tsize = 0; /* Default later, based on 'c' option for cart tapes */ 112 dumpdates = _PATH_DUMPDATES; 113 popenout = NULL; 114 tape = NULL; 115 temp = _PATH_DTMP; 116 if (TP_BSIZE / DEV_BSIZE == 0 || TP_BSIZE % DEV_BSIZE != 0) 117 quit("TP_BSIZE must be a multiple of DEV_BSIZE\n"); 118 level = 0; 119 rsync_friendly = 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:RrSs: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 = 10 * level + ch - '0'; 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 'r': /* store slightly less data to be friendly to rsync */ 193 if (rsync_friendly < 1) 194 rsync_friendly = 1; 195 break; 196 197 case 'R': /* store even less data to be friendlier to rsync */ 198 if (rsync_friendly < 2) 199 rsync_friendly = 2; 200 break; 201 202 case 'S': /* exit after estimating # of tapes */ 203 just_estimate = 1; 204 break; 205 206 case 's': /* tape size, feet */ 207 tsize = numarg("tape size", 1L, 0L) * 12 * 10; 208 break; 209 210 case 'T': /* time of last dump */ 211 spcl.c_ddate = unctime(optarg); 212 if (spcl.c_ddate < 0) { 213 (void)fprintf(stderr, "bad time \"%s\"\n", 214 optarg); 215 exit(X_STARTUP); 216 } 217 Tflag = 1; 218 lastlevel = -1; 219 break; 220 221 case 'u': /* update /etc/dumpdates */ 222 uflag = 1; 223 break; 224 225 case 'W': /* what to do */ 226 case 'w': 227 lastdump(ch); 228 exit(X_FINOK); /* do nothing else */ 229 230 default: 231 usage(); 232 } 233 argc -= optind; 234 argv += optind; 235 236 if (argc < 1) { 237 (void)fprintf(stderr, "Must specify disk or file system\n"); 238 exit(X_STARTUP); 239 } 240 disk = *argv++; 241 argc--; 242 if (argc >= 1) { 243 (void)fprintf(stderr, "Unknown arguments to dump:"); 244 while (argc--) 245 (void)fprintf(stderr, " %s", *argv++); 246 (void)fprintf(stderr, "\n"); 247 exit(X_STARTUP); 248 } 249 if (rsync_friendly && (level > 0)) { 250 (void)fprintf(stderr, "%s %s\n", "rsync friendly options", 251 "can be used only with level 0 dumps."); 252 exit(X_STARTUP); 253 } 254 if (Tflag && uflag) { 255 (void)fprintf(stderr, 256 "You cannot use the T and u flags together.\n"); 257 exit(X_STARTUP); 258 } 259 if (popenout) { 260 tape = "child pipeline process"; 261 } else if (tape == NULL && (tape = getenv("TAPE")) == NULL) 262 tape = _PATH_DEFTAPE; 263 if (strcmp(tape, "-") == 0) { 264 pipeout++; 265 tape = "standard output"; 266 } 267 268 if (blocksperfile) 269 blocksperfile = rounddown(blocksperfile, ntrec); 270 else if (!unlimited) { 271 /* 272 * Determine how to default tape size and density 273 * 274 * density tape size 275 * 9-track 1600 bpi (160 bytes/.1") 2300 ft. 276 * 9-track 6250 bpi (625 bytes/.1") 2300 ft. 277 * cartridge 8000 bpi (100 bytes/.1") 1700 ft. 278 * (450*4 - slop) 279 * hilit19 hits again: " 280 */ 281 if (density == 0) 282 density = cartridge ? 100 : 160; 283 if (tsize == 0) 284 tsize = cartridge ? 1700L*120L : 2300L*120L; 285 } 286 287 if (strchr(tape, ':')) { 288 host = tape; 289 tape = strchr(host, ':'); 290 *tape++ = '\0'; 291 #ifdef RDUMP 292 if (strchr(tape, '\n')) { 293 (void)fprintf(stderr, "invalid characters in tape\n"); 294 exit(X_STARTUP); 295 } 296 if (rmthost(host) == 0) 297 exit(X_STARTUP); 298 #else 299 (void)fprintf(stderr, "remote dump not enabled\n"); 300 exit(X_STARTUP); 301 #endif 302 } 303 (void)setuid(getuid()); /* rmthost() is the only reason to be setuid */ 304 305 if (signal(SIGHUP, SIG_IGN) != SIG_IGN) 306 signal(SIGHUP, sig); 307 if (signal(SIGTRAP, SIG_IGN) != SIG_IGN) 308 signal(SIGTRAP, sig); 309 if (signal(SIGFPE, SIG_IGN) != SIG_IGN) 310 signal(SIGFPE, sig); 311 if (signal(SIGBUS, SIG_IGN) != SIG_IGN) 312 signal(SIGBUS, sig); 313 if (signal(SIGSEGV, SIG_IGN) != SIG_IGN) 314 signal(SIGSEGV, sig); 315 if (signal(SIGTERM, SIG_IGN) != SIG_IGN) 316 signal(SIGTERM, sig); 317 if (signal(SIGINT, interrupt) == SIG_IGN) 318 signal(SIGINT, SIG_IGN); 319 320 dump_getfstab(); /* /etc/fstab snarfed */ 321 /* 322 * disk can be either the full special file name, 323 * the suffix of the special file name, 324 * the special name missing the leading '/', 325 * the file system name with or without the leading '/'. 326 */ 327 dt = fstabsearch(disk); 328 if (dt != NULL) { 329 disk = rawname(dt->fs_spec); 330 if (disk == NULL) 331 errx(X_STARTUP, "%s: unknown file system", dt->fs_spec); 332 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN); 333 (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN); 334 } else { 335 (void)strncpy(spcl.c_dev, disk, NAMELEN); 336 (void)strncpy(spcl.c_filesys, "an unlisted file system", 337 NAMELEN); 338 } 339 spcl.c_dev[NAMELEN-1]='\0'; 340 spcl.c_filesys[NAMELEN-1]='\0'; 341 342 if ((mntpt = getmntpt(disk, &mntflags)) != NULL) { 343 if (mntflags & MNT_RDONLY) { 344 if (snapdump != 0) { 345 msg("WARNING: %s\n", 346 "-L ignored for read-only filesystem."); 347 snapdump = 0; 348 } 349 } else if (snapdump == 0) { 350 msg("WARNING: %s\n", 351 "should use -L when dumping live read-write " 352 "filesystems!"); 353 } else { 354 char snapname[BUFSIZ], snapcmd[BUFSIZ]; 355 356 snprintf(snapname, sizeof snapname, "%s/.snap", mntpt); 357 if ((stat(snapname, &sb) < 0) || !S_ISDIR(sb.st_mode)) { 358 msg("WARNING: %s %s\n", 359 "-L requested but snapshot location", 360 snapname); 361 msg(" %s: %s\n", 362 "is not a directory", 363 "dump downgraded, -L ignored"); 364 snapdump = 0; 365 } else { 366 snprintf(snapname, sizeof snapname, 367 "%s/.snap/dump_snapshot", mntpt); 368 snprintf(snapcmd, sizeof snapcmd, "%s %s %s", 369 _PATH_MKSNAP_FFS, mntpt, snapname); 370 unlink(snapname); 371 if (system(snapcmd) != 0) 372 errx(X_STARTUP, "Cannot create %s: %s\n", 373 snapname, strerror(errno)); 374 if ((diskfd = open(snapname, O_RDONLY)) < 0) { 375 unlink(snapname); 376 errx(X_STARTUP, "Cannot open %s: %s\n", 377 snapname, strerror(errno)); 378 } 379 unlink(snapname); 380 if (fstat(diskfd, &sb) != 0) 381 err(X_STARTUP, "%s: stat", snapname); 382 spcl.c_date = _time_to_time64(sb.st_mtime); 383 } 384 } 385 } else if (snapdump != 0) { 386 msg("WARNING: Cannot use -L on an unmounted filesystem.\n"); 387 snapdump = 0; 388 } 389 if (snapdump == 0) { 390 if ((diskfd = open(disk, O_RDONLY)) < 0) 391 err(X_STARTUP, "Cannot open %s", disk); 392 if (fstat(diskfd, &sb) != 0) 393 err(X_STARTUP, "%s: stat", disk); 394 if (S_ISDIR(sb.st_mode)) 395 errx(X_STARTUP, "%s: unknown file system", disk); 396 } 397 398 (void)strcpy(spcl.c_label, "none"); 399 (void)gethostname(spcl.c_host, NAMELEN); 400 spcl.c_level = level; 401 spcl.c_type = TS_TAPE; 402 if (rsync_friendly) { 403 /* don't store real dump times */ 404 spcl.c_date = 0; 405 spcl.c_ddate = 0; 406 } 407 if (spcl.c_date == 0) { 408 tmsg = "the epoch\n"; 409 } else { 410 time_t t = _time64_to_time(spcl.c_date); 411 tmsg = ctime(&t); 412 } 413 msg("Date of this level %d dump: %s", level, tmsg); 414 415 if (!Tflag && (!rsync_friendly)) 416 getdumptime(); /* /etc/dumpdates snarfed */ 417 if (spcl.c_ddate == 0) { 418 tmsg = "the epoch\n"; 419 } else { 420 time_t t = _time64_to_time(spcl.c_ddate); 421 tmsg = ctime(&t); 422 } 423 if (lastlevel < 0) 424 msg("Date of last (level unknown) dump: %s", tmsg); 425 else 426 msg("Date of last level %d dump: %s", lastlevel, tmsg); 427 428 msg("Dumping %s%s ", snapdump ? "snapshot of ": "", disk); 429 if (dt != NULL) 430 msgtail("(%s) ", dt->fs_file); 431 if (host) 432 msgtail("to %s on host %s\n", tape, host); 433 else 434 msgtail("to %s\n", tape); 435 436 sync(); 437 if ((ret = sbget(diskfd, &sblock, -1)) != 0) { 438 switch (ret) { 439 case ENOENT: 440 warn("Cannot find file system superblock"); 441 return (1); 442 default: 443 warn("Unable to read file system superblock"); 444 return (1); 445 } 446 } 447 dev_bsize = sblock->fs_fsize / fsbtodb(sblock, 1); 448 dev_bshift = ffs(dev_bsize) - 1; 449 if (dev_bsize != (1 << dev_bshift)) 450 quit("dev_bsize (%ld) is not a power of 2", dev_bsize); 451 tp_bshift = ffs(TP_BSIZE) - 1; 452 if (TP_BSIZE != (1 << tp_bshift)) 453 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE); 454 maxino = sblock->fs_ipg * sblock->fs_ncg; 455 mapsize = roundup(howmany(maxino, CHAR_BIT), TP_BSIZE); 456 c_count = howmany(mapsize * sizeof(char), TP_BSIZE); 457 if (c_count > TP_NINDIR) 458 quit("fs is too large for dump!"); 459 usedinomap = (char *)calloc((unsigned) mapsize, sizeof(char)); 460 dumpdirmap = (char *)calloc((unsigned) mapsize, sizeof(char)); 461 dumpinomap = (char *)calloc((unsigned) mapsize, sizeof(char)); 462 tapesize = 3 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1); 463 464 nonodump = spcl.c_level < honorlevel; 465 466 passno = 1; 467 setproctitle("%s: pass 1: regular files", disk); 468 msg("mapping (Pass I) [regular files]\n"); 469 anydirskipped = mapfiles(maxino, &tapesize); 470 471 passno = 2; 472 setproctitle("%s: pass 2: directories", disk); 473 msg("mapping (Pass II) [directories]\n"); 474 while (anydirskipped) { 475 anydirskipped = mapdirs(maxino, &tapesize); 476 } 477 478 if (pipeout || unlimited) { 479 tapesize += 10; /* 10 trailer blocks */ 480 msg("estimated %ld tape blocks.\n", tapesize); 481 } else { 482 double fetapes; 483 484 if (blocksperfile) 485 fetapes = (double) tapesize / blocksperfile; 486 else if (cartridge) { 487 /* Estimate number of tapes, assuming streaming stops at 488 the end of each block written, and not in mid-block. 489 Assume no erroneous blocks; this can be compensated 490 for with an artificially low tape size. */ 491 fetapes = 492 ( (double) tapesize /* blocks */ 493 * TP_BSIZE /* bytes/block */ 494 * (1.0/density) /* 0.1" / byte " */ 495 + 496 (double) tapesize /* blocks */ 497 * (1.0/ntrec) /* streaming-stops per block */ 498 * 15.48 /* 0.1" / streaming-stop " */ 499 ) * (1.0 / tsize ); /* tape / 0.1" " */ 500 } else { 501 /* Estimate number of tapes, for old fashioned 9-track 502 tape */ 503 int tenthsperirg = (density == 625) ? 3 : 7; 504 fetapes = 505 ( (double) tapesize /* blocks */ 506 * TP_BSIZE /* bytes / block */ 507 * (1.0/density) /* 0.1" / byte " */ 508 + 509 (double) tapesize /* blocks */ 510 * (1.0/ntrec) /* IRG's / block */ 511 * tenthsperirg /* 0.1" / IRG " */ 512 ) * (1.0 / tsize ); /* tape / 0.1" " */ 513 } 514 etapes = fetapes; /* truncating assignment */ 515 etapes++; 516 /* count the dumped inodes map on each additional tape */ 517 tapesize += (etapes - 1) * 518 (howmany(mapsize * sizeof(char), TP_BSIZE) + 1); 519 tapesize += etapes + 10; /* headers + 10 trailer blks */ 520 msg("estimated %ld tape blocks on %3.2f tape(s).\n", 521 tapesize, fetapes); 522 } 523 524 /* 525 * If the user only wants an estimate of the number of 526 * tapes, exit now. 527 */ 528 if (just_estimate) 529 exit(0); 530 531 /* 532 * Allocate tape buffer. 533 */ 534 if (!alloctape()) 535 quit( 536 "can't allocate tape buffers - try a smaller blocking factor.\n"); 537 538 startnewtape(1); 539 (void)time((time_t *)&(tstart_writing)); 540 dumpmap(usedinomap, TS_CLRI, maxino - 1); 541 542 passno = 3; 543 setproctitle("%s: pass 3: directories", disk); 544 msg("dumping (Pass III) [directories]\n"); 545 dirty = 0; /* XXX just to get gcc to shut up */ 546 for (map = dumpdirmap, ino = 1; ino < maxino; ino++) { 547 if (((ino - 1) % CHAR_BIT) == 0) /* map is offset by 1 */ 548 dirty = *map++; 549 else 550 dirty >>= 1; 551 if ((dirty & 1) == 0) 552 continue; 553 /* 554 * Skip directory inodes deleted and maybe reallocated 555 */ 556 dp = getinode(ino, &mode); 557 if (mode != IFDIR) 558 continue; 559 (void)dumpino(dp, ino); 560 } 561 562 passno = 4; 563 setproctitle("%s: pass 4: regular files", disk); 564 msg("dumping (Pass IV) [regular files]\n"); 565 for (map = dumpinomap, ino = 1; ino < maxino; ino++) { 566 if (((ino - 1) % CHAR_BIT) == 0) /* map is offset by 1 */ 567 dirty = *map++; 568 else 569 dirty >>= 1; 570 if ((dirty & 1) == 0) 571 continue; 572 /* 573 * Skip inodes deleted and reallocated as directories. 574 */ 575 dp = getinode(ino, &mode); 576 if (mode == IFDIR) 577 continue; 578 (void)dumpino(dp, ino); 579 } 580 581 (void)time((time_t *)&(tend_writing)); 582 spcl.c_type = TS_END; 583 for (i = 0; i < ntrec; i++) 584 writeheader(maxino - 1); 585 if (pipeout) 586 msg("DUMP: %jd tape blocks\n", (intmax_t)spcl.c_tapea); 587 else 588 msg("DUMP: %jd tape blocks on %d volume%s\n", 589 (intmax_t)spcl.c_tapea, spcl.c_volume, 590 (spcl.c_volume == 1) ? "" : "s"); 591 592 /* report dump performance, avoid division through zero */ 593 if (tend_writing - tstart_writing == 0) 594 msg("finished in less than a second\n"); 595 else 596 msg("finished in %jd seconds, throughput %jd KBytes/sec\n", 597 (intmax_t)tend_writing - tstart_writing, 598 (intmax_t)(spcl.c_tapea / 599 (tend_writing - tstart_writing))); 600 601 putdumptime(); 602 trewind(); 603 broadcast("DUMP IS DONE!\a\a\n"); 604 msg("DUMP IS DONE\n"); 605 Exit(X_FINOK); 606 /* NOTREACHED */ 607 } 608 609 static void 610 usage(void) 611 { 612 fprintf(stderr, 613 "usage: dump [-0123456789acLnSu] [-B records] [-b blocksize] [-C cachesize]\n" 614 " [-D dumpdates] [-d density] [-f file | -P pipecommand] [-h level]\n" 615 " [-s feet] [-T date] filesystem\n" 616 " dump -W | -w\n"); 617 exit(X_STARTUP); 618 } 619 620 /* 621 * Check to see if a disk is currently mounted. 622 */ 623 static char * 624 getmntpt(char *name, int *mntflagsp) 625 { 626 long mntsize, i; 627 struct statfs *mntbuf; 628 629 mntsize = getmntinfo(&mntbuf, MNT_NOWAIT); 630 for (i = 0; i < mntsize; i++) { 631 if (!strcmp(mntbuf[i].f_mntfromname, name)) { 632 *mntflagsp = mntbuf[i].f_flags; 633 return (mntbuf[i].f_mntonname); 634 } 635 } 636 return (0); 637 } 638 639 /* 640 * Pick up a numeric argument. It must be nonnegative and in the given 641 * range (except that a vmax of 0 means unlimited). 642 */ 643 static long 644 numarg(const char *meaning, long vmin, long vmax) 645 { 646 char *p; 647 long val; 648 649 val = strtol(optarg, &p, 10); 650 if (*p) 651 errx(1, "illegal %s -- %s", meaning, optarg); 652 if (val < vmin || (vmax && val > vmax)) 653 errx(1, "%s must be between %ld and %ld", meaning, vmin, vmax); 654 return (val); 655 } 656 657 void 658 sig(int signo) 659 { 660 switch(signo) { 661 case SIGALRM: 662 case SIGBUS: 663 case SIGFPE: 664 case SIGHUP: 665 case SIGTERM: 666 case SIGTRAP: 667 if (pipeout) 668 quit("Signal on pipe: cannot recover\n"); 669 msg("Rewriting attempted as response to unknown signal.\n"); 670 (void)fflush(stderr); 671 (void)fflush(stdout); 672 close_rewind(); 673 exit(X_REWRITE); 674 /* NOTREACHED */ 675 case SIGSEGV: 676 msg("SIGSEGV: ABORTING!\n"); 677 (void)signal(SIGSEGV, SIG_DFL); 678 (void)kill(0, SIGSEGV); 679 /* NOTREACHED */ 680 } 681 } 682 683 char * 684 rawname(char *cp) 685 { 686 struct stat sb; 687 688 /* 689 * Ensure that the device passed in is a raw device. 690 */ 691 if (stat(cp, &sb) == 0 && (sb.st_mode & S_IFMT) == S_IFCHR) 692 return (cp); 693 694 /* 695 * Since there's only one device type now, we can't construct any 696 * better name, so we have to return NULL. 697 */ 698 return (NULL); 699 } 700 701 /* 702 * obsolete -- 703 * Change set of key letters and ordered arguments into something 704 * getopt(3) will like. 705 */ 706 static void 707 obsolete(int *argcp, char **argvp[]) 708 { 709 int argc, flags; 710 char *ap, **argv, *flagsp, **nargv, *p; 711 712 /* Setup. */ 713 argv = *argvp; 714 argc = *argcp; 715 716 /* 717 * Return if no arguments or first argument has leading 718 * dash or slash. 719 */ 720 ap = argv[1]; 721 if (argc == 1 || *ap == '-' || *ap == '/') 722 return; 723 724 /* Allocate space for new arguments. */ 725 if ((*argvp = nargv = malloc((argc + 1) * sizeof(char *))) == NULL || 726 (p = flagsp = malloc(strlen(ap) + 2)) == NULL) 727 err(1, NULL); 728 729 *nargv++ = *argv; 730 argv += 2; 731 732 for (flags = 0; *ap; ++ap) { 733 switch (*ap) { 734 case 'B': 735 case 'b': 736 case 'd': 737 case 'f': 738 case 'D': 739 case 'C': 740 case 'h': 741 case 's': 742 case 'T': 743 if (*argv == NULL) { 744 warnx("option requires an argument -- %c", *ap); 745 usage(); 746 } 747 if ((nargv[0] = malloc(strlen(*argv) + 2 + 1)) == NULL) 748 err(1, NULL); 749 nargv[0][0] = '-'; 750 nargv[0][1] = *ap; 751 (void)strcpy(&nargv[0][2], *argv); 752 ++argv; 753 ++nargv; 754 break; 755 default: 756 if (!flags) { 757 *p++ = '-'; 758 flags = 1; 759 } 760 *p++ = *ap; 761 break; 762 } 763 } 764 765 /* Terminate flags. */ 766 if (flags) { 767 *p = '\0'; 768 *nargv++ = flagsp; 769 } else 770 free(flagsp); 771 772 /* Copy remaining arguments. */ 773 while ((*nargv++ = *argv++)); 774 775 /* Update argument count. */ 776 *argcp = nargv - *argvp - 1; 777 } 778