main.c revision 1.69.2.2
1 /* $NetBSD: main.c,v 1.69.2.2 2014/08/20 00:02:24 tls Exp $ */ 2 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 #include <sys/cdefs.h> 33 #ifndef lint 34 __COPYRIGHT("@(#) Copyright (c) 1980, 1991, 1993, 1994\ 35 The Regents of the University of California. All rights reserved."); 36 #endif /* not lint */ 37 38 #ifndef lint 39 #if 0 40 static char sccsid[] = "@(#)main.c 8.6 (Berkeley) 5/1/95"; 41 #else 42 __RCSID("$NetBSD: main.c,v 1.69.2.2 2014/08/20 00:02:24 tls Exp $"); 43 #endif 44 #endif /* not lint */ 45 46 #include <sys/param.h> 47 #include <sys/time.h> 48 #include <sys/stat.h> 49 #include <sys/mount.h> 50 51 #include <ufs/ffs/fs.h> 52 #include <ufs/ffs/ffs_extern.h> 53 54 #include <ctype.h> 55 #include <err.h> 56 #include <errno.h> 57 #include <fcntl.h> 58 #include <fstab.h> 59 #include <signal.h> 60 #include <stdio.h> 61 #include <stdlib.h> 62 #include <string.h> 63 #include <time.h> 64 #include <unistd.h> 65 #include <util.h> 66 67 #include "dump.h" 68 #include "pathnames.h" 69 #include "snapshot.h" 70 71 int timestamp; /* print message timestamps */ 72 int notify; /* notify operator flag */ 73 int blockswritten; /* number of blocks written on current tape */ 74 int tapeno; /* current tape number */ 75 int density; /* density in bytes/0.1" */ 76 int ntrec = NTREC; /* # tape blocks in each tape record */ 77 int cartridge; /* Assume non-cartridge tape */ 78 long dev_bsize = 1; /* recalculated below */ 79 long blocksperfile; /* output blocks per file */ 80 const char *host; /* remote host (if any) */ 81 int readcache = -1; /* read cache size (in readblksize blks) */ 82 int readblksize = 32 * 1024; /* read block size */ 83 char default_time_string[] = "%T %Z"; /* default timestamp string */ 84 char *time_string = default_time_string; /* timestamp string */ 85 86 static long numarg(const char *, long, long); 87 static void obsolete(int *, char **[]); 88 static void usage(void); 89 90 int 91 main(int argc, char *argv[]) 92 { 93 ino_t ino; 94 int dirty; 95 union dinode *dp; 96 struct fstab *dt; 97 struct statvfs *mntinfo, fsbuf; 98 char *map, *cp; 99 int ch; 100 int i, anydirskipped, bflag = 0, Tflag = 0, Fflag = 0, honorlevel = 1; 101 int snap_internal = 0; 102 ino_t maxino; 103 time_t tnow, date; 104 int dirc; 105 char *mountpoint; 106 int just_estimate = 0; 107 char labelstr[LBLSIZE]; 108 char buf[MAXPATHLEN], rbuf[MAXPATHLEN]; 109 char *new_time_format; 110 char *snap_backup = NULL; 111 112 spcl.c_date = 0; 113 (void)time(&tnow); 114 spcl.c_date = tnow; 115 tzset(); /* set up timezone for strftime */ 116 if ((new_time_format = getenv("TIMEFORMAT")) != NULL) 117 time_string = new_time_format; 118 119 tsize = 0; /* Default later, based on 'c' option for cart tapes */ 120 if ((tape = getenv("TAPE")) == NULL) 121 tape = _PATH_DEFTAPE; 122 dumpdates = _PATH_DUMPDATES; 123 temp = _PATH_DTMP; 124 strcpy(labelstr, "none"); /* XXX safe strcpy. */ 125 if (TP_BSIZE / DEV_BSIZE == 0 || TP_BSIZE % DEV_BSIZE != 0) 126 quit("TP_BSIZE must be a multiple of DEV_BSIZE\n"); 127 level = '0'; 128 timestamp = 0; 129 130 if (argc < 2) 131 usage(); 132 133 obsolete(&argc, &argv); 134 while ((ch = getopt(argc, argv, 135 "0123456789aB:b:cd:eFf:h:ik:l:L:nr:s:StT:uWwx:X")) != -1) 136 switch (ch) { 137 /* dump level */ 138 case '0': case '1': case '2': case '3': case '4': 139 case '5': case '6': case '7': case '8': case '9': 140 level = ch; 141 break; 142 143 case 'a': /* `auto-size', Write to EOM. */ 144 unlimited = 1; 145 break; 146 147 case 'B': /* blocks per output file */ 148 blocksperfile = numarg("blocks per file", 1L, 0L); 149 break; 150 151 case 'b': /* blocks per tape write */ 152 ntrec = numarg("blocks per write", 1L, 1000L); 153 bflag = 1; 154 break; 155 156 case 'c': /* Tape is cart. not 9-track */ 157 cartridge = 1; 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 'e': /* eject full tapes */ 167 eflag = 1; 168 break; 169 170 case 'F': /* files-to-dump is an fs image */ 171 Fflag = 1; 172 break; 173 174 case 'f': /* output file */ 175 tape = optarg; 176 break; 177 178 case 'h': 179 honorlevel = numarg("honor level", 0L, 10L); 180 break; 181 182 case 'i': /* "true incremental" regardless level */ 183 level = 'i'; 184 trueinc = 1; 185 break; 186 187 case 'k': 188 readblksize = numarg("read block size", 0, 64) * 1024; 189 break; 190 191 case 'l': /* autoload after eject full tapes */ 192 eflag = 1; 193 lflag = numarg("timeout (in seconds)", 1, 0); 194 break; 195 196 case 'L': 197 /* 198 * Note that although there are LBLSIZE characters, 199 * the last must be '\0', so the limit on strlen() 200 * is really LBLSIZE-1. 201 */ 202 if (strlcpy(labelstr, optarg, sizeof(labelstr)) 203 >= sizeof(labelstr)) { 204 msg( 205 "WARNING Label `%s' is larger than limit of %lu characters.\n", 206 optarg, 207 (unsigned long)sizeof(labelstr) - 1); 208 msg("WARNING: Using truncated label `%s'.\n", 209 labelstr); 210 } 211 break; 212 case 'n': /* notify operators */ 213 notify = 1; 214 break; 215 216 case 'r': /* read cache size */ 217 readcache = numarg("read cache size", 0, 512); 218 break; 219 220 case 's': /* tape size, feet */ 221 tsize = numarg("tape size", 1L, 0L) * 12 * 10; 222 break; 223 224 case 'S': /* exit after estimating # of tapes */ 225 just_estimate = 1; 226 break; 227 228 case 't': 229 timestamp = 1; 230 break; 231 232 case 'T': /* time of last dump */ 233 spcl.c_ddate = unctime(optarg); 234 if (spcl.c_ddate < 0) { 235 (void)fprintf(stderr, "bad time \"%s\"\n", 236 optarg); 237 exit(X_STARTUP); 238 } 239 Tflag = 1; 240 lastlevel = '?'; 241 break; 242 243 case 'u': /* update /etc/dumpdates */ 244 uflag = 1; 245 break; 246 247 case 'W': /* what to do */ 248 case 'w': 249 lastdump(ch); 250 exit(X_FINOK); /* do nothing else */ 251 252 case 'x': 253 snap_backup = optarg; 254 break; 255 256 case 'X': 257 snap_internal = 1; 258 break; 259 260 default: 261 usage(); 262 } 263 argc -= optind; 264 argv += optind; 265 266 if (argc < 1) { 267 (void)fprintf(stderr, 268 "Must specify disk or image, or file list\n"); 269 exit(X_STARTUP); 270 } 271 272 273 /* 274 * determine if disk is a subdirectory, and setup appropriately 275 */ 276 getfstab(); /* /etc/fstab snarfed */ 277 disk = NULL; 278 disk_dev = NULL; 279 mountpoint = NULL; 280 dirc = 0; 281 for (i = 0; i < argc; i++) { 282 struct stat sb; 283 int error; 284 285 error = lstat(argv[i], &sb); 286 if (Fflag || (!error && (S_ISCHR(sb.st_mode) || S_ISBLK(sb.st_mode)))) { 287 if (error) 288 quit("Cannot stat %s: %s\n", argv[i], strerror(errno)); 289 disk = argv[i]; 290 multicheck: 291 if (dirc != 0) 292 quit("Can't dump a disk or image at the same time as a file list\n"); 293 break; 294 } 295 if ((dt = fstabsearch(argv[i])) != NULL) { 296 disk = argv[i]; 297 mountpoint = xstrdup(dt->fs_file); 298 goto multicheck; 299 } 300 if (statvfs(argv[i], &fsbuf) == -1) 301 quit("Cannot statvfs %s: %s\n", argv[i], 302 strerror(errno)); 303 disk = fsbuf.f_mntfromname; 304 if (strcmp(argv[i], fsbuf.f_mntonname) == 0) 305 goto multicheck; 306 if (mountpoint == NULL) { 307 mountpoint = xstrdup(fsbuf.f_mntonname); 308 if (uflag) { 309 msg("Ignoring u flag for subdir dump\n"); 310 uflag = 0; 311 } 312 if (level > '0') { 313 msg("Subdir dump is done at level 0\n"); 314 level = '0'; 315 } 316 msg("Dumping sub files/directories from %s\n", 317 mountpoint); 318 } else { 319 if (strcmp(mountpoint, fsbuf.f_mntonname) != 0) 320 quit("%s is not on %s\n", argv[i], mountpoint); 321 } 322 msg("Dumping file/directory %s\n", argv[i]); 323 dirc++; 324 } 325 if (mountpoint) 326 free(mountpoint); 327 328 if (dirc == 0) { 329 argv++; 330 if (argc != 1) { 331 (void)fprintf(stderr, "Excess arguments to dump:"); 332 while (--argc) 333 (void)fprintf(stderr, " %s", *argv++); 334 (void)fprintf(stderr, "\n"); 335 exit(X_STARTUP); 336 } 337 } 338 if (Tflag && uflag) { 339 (void)fprintf(stderr, 340 "You cannot use the T and u flags together.\n"); 341 exit(X_STARTUP); 342 } 343 if (strcmp(tape, "-") == 0) { 344 pipeout++; 345 tape = "standard output"; 346 } 347 348 if (blocksperfile) 349 blocksperfile = blocksperfile / ntrec * ntrec; /* round down */ 350 else if (!unlimited) { 351 /* 352 * Determine how to default tape size and density 353 * 354 * density tape size 355 * 9-track 1600 bpi (160 bytes/.1") 2300 ft. 356 * 9-track 6250 bpi (625 bytes/.1") 2300 ft. 357 * cartridge 8000 bpi (100 bytes/.1") 1700 ft. 358 * (450*4 - slop) 359 */ 360 if (density == 0) 361 density = cartridge ? 100 : 160; 362 if (tsize == 0) 363 tsize = cartridge ? 1700L*120L : 2300L*120L; 364 } 365 366 if ((cp = strchr(tape, ':')) != NULL) { 367 host = tape; 368 /* This is fine, because all the const strings don't have : */ 369 *cp++ = '\0'; 370 tape = cp; 371 #ifdef RDUMP 372 if (rmthost(host) == 0) 373 exit(X_STARTUP); 374 #else 375 (void)fprintf(stderr, "remote dump not enabled\n"); 376 exit(X_STARTUP); 377 #endif 378 } 379 380 if (signal(SIGHUP, SIG_IGN) != SIG_IGN) 381 signal(SIGHUP, sig); 382 if (signal(SIGTRAP, SIG_IGN) != SIG_IGN) 383 signal(SIGTRAP, sig); 384 if (signal(SIGFPE, SIG_IGN) != SIG_IGN) 385 signal(SIGFPE, sig); 386 if (signal(SIGBUS, SIG_IGN) != SIG_IGN) 387 signal(SIGBUS, sig); 388 #if 0 389 if (signal(SIGSEGV, SIG_IGN) != SIG_IGN) 390 signal(SIGSEGV, sig); 391 #endif 392 if (signal(SIGTERM, SIG_IGN) != SIG_IGN) 393 signal(SIGTERM, sig); 394 if (signal(SIGINT, interrupt) == SIG_IGN) 395 signal(SIGINT, SIG_IGN); 396 397 /* 398 * disk can be either the full special file name, or 399 * the file system name. 400 */ 401 mountpoint = NULL; 402 mntinfo = mntinfosearch(disk); 403 if ((dt = fstabsearch(disk)) != NULL) { 404 if (getfsspecname(buf, sizeof(buf), dt->fs_spec) == NULL) 405 quit("%s (%s)", buf, strerror(errno)); 406 if (getdiskrawname(rbuf, sizeof(rbuf), buf) == NULL) 407 quit("Can't get disk raw name for `%s' (%s)", 408 buf, strerror(errno)); 409 disk = rbuf; 410 mountpoint = dt->fs_file; 411 msg("Found %s on %s in %s\n", disk, mountpoint, _PATH_FSTAB); 412 } else if (mntinfo != NULL) { 413 if (getdiskrawname(rbuf, sizeof(rbuf), mntinfo->f_mntfromname) 414 == NULL) 415 quit("Can't get disk raw name for `%s' (%s)", 416 mntinfo->f_mntfromname, strerror(errno)); 417 disk = rbuf; 418 mountpoint = mntinfo->f_mntonname; 419 msg("Found %s on %s in mount table\n", disk, mountpoint); 420 } 421 if (mountpoint != NULL) { 422 if (dirc != 0) 423 (void)snprintf(spcl.c_filesys, sizeof(spcl.c_filesys), 424 "a subset of %s", mountpoint); 425 else 426 (void)strlcpy(spcl.c_filesys, mountpoint, 427 sizeof(spcl.c_filesys)); 428 } else if (Fflag) { 429 (void)strlcpy(spcl.c_filesys, "a file system image", 430 sizeof(spcl.c_filesys)); 431 } else { 432 (void)strlcpy(spcl.c_filesys, "an unlisted file system", 433 sizeof(spcl.c_filesys)); 434 } 435 (void)strlcpy(spcl.c_dev, disk, sizeof(spcl.c_dev)); 436 (void)strlcpy(spcl.c_label, labelstr, sizeof(spcl.c_label)); 437 (void)gethostname(spcl.c_host, sizeof(spcl.c_host)); 438 spcl.c_host[sizeof(spcl.c_host) - 1] = '\0'; 439 440 if ((snap_backup != NULL || snap_internal) && mntinfo == NULL) { 441 msg("WARNING: Cannot use -x or -X on unmounted file system.\n"); 442 snap_backup = NULL; 443 snap_internal = 0; 444 } 445 446 #ifdef DUMP_LFS 447 sync(); 448 if (snap_backup != NULL || snap_internal) { 449 if (lfs_wrap_stop(mountpoint) < 0) { 450 msg("Cannot stop writing on %s\n", mountpoint); 451 exit(X_STARTUP); 452 } 453 } 454 if ((diskfd = open(disk, O_RDONLY)) < 0) { 455 msg("Cannot open %s\n", disk); 456 exit(X_STARTUP); 457 } 458 disk_dev = disk; 459 #else /* ! DUMP_LFS */ 460 if (snap_backup != NULL || snap_internal) { 461 diskfd = snap_open(mntinfo->f_mntonname, snap_backup, 462 &tnow, &disk_dev); 463 if (diskfd < 0) { 464 msg("Cannot open snapshot of %s\n", 465 mntinfo->f_mntonname); 466 exit(X_STARTUP); 467 } 468 spcl.c_date = tnow; 469 } else { 470 if ((diskfd = open(disk, O_RDONLY)) < 0) { 471 msg("Cannot open %s\n", disk); 472 exit(X_STARTUP); 473 } 474 disk_dev = disk; 475 } 476 sync(); 477 #endif /* ! DUMP_LFS */ 478 479 needswap = fs_read_sblock(sblock_buf); 480 481 /* true incremental is always a level 10 dump */ 482 spcl.c_level = trueinc? iswap32(10): iswap32(level - '0'); 483 spcl.c_type = iswap32(TS_TAPE); 484 spcl.c_date = iswap32(spcl.c_date); 485 spcl.c_ddate = iswap32(spcl.c_ddate); 486 if (!Tflag) 487 getdumptime(); /* /etc/dumpdates snarfed */ 488 489 date = iswap32(spcl.c_date); 490 msg("Date of this level %c dump: %s", level, 491 spcl.c_date == 0 ? "the epoch\n" : ctime(&date)); 492 date = iswap32(spcl.c_ddate); 493 msg("Date of last level %c dump: %s", lastlevel, 494 spcl.c_ddate == 0 ? "the epoch\n" : ctime(&date)); 495 msg("Dumping "); 496 if (snap_backup != NULL || snap_internal) 497 msgtail("a snapshot of "); 498 if (dirc != 0) 499 msgtail("a subset of "); 500 msgtail("%s (%s) ", disk, spcl.c_filesys); 501 if (host) 502 msgtail("to %s on host %s\n", tape, host); 503 else 504 msgtail("to %s\n", tape); 505 msg("Label: %s\n", labelstr); 506 507 ufsib = fs_parametrize(); 508 509 dev_bshift = ffs(dev_bsize) - 1; 510 if (dev_bsize != (1 << dev_bshift)) 511 quit("dev_bsize (%ld) is not a power of 2", dev_bsize); 512 tp_bshift = ffs(TP_BSIZE) - 1; 513 if (TP_BSIZE != (1 << tp_bshift)) 514 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE); 515 maxino = fs_maxino(); 516 mapsize = roundup(howmany(maxino, NBBY), TP_BSIZE); 517 usedinomap = (char *)xcalloc((unsigned) mapsize, sizeof(char)); 518 dumpdirmap = (char *)xcalloc((unsigned) mapsize, sizeof(char)); 519 dumpinomap = (char *)xcalloc((unsigned) mapsize, sizeof(char)); 520 tapesize = 3 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1); 521 522 nonodump = iswap32(spcl.c_level) < honorlevel; 523 524 initcache(readcache, readblksize); 525 526 (void)signal(SIGINFO, statussig); 527 528 msg("mapping (Pass I) [regular files]\n"); 529 anydirskipped = mapfiles(maxino, &tapesize, mountpoint, 530 (dirc ? argv : NULL)); 531 532 msg("mapping (Pass II) [directories]\n"); 533 while (anydirskipped) { 534 anydirskipped = mapdirs(maxino, &tapesize); 535 } 536 537 if (pipeout || unlimited) { 538 tapesize += 10; /* 10 trailer blocks */ 539 msg("estimated %llu tape blocks.\n", 540 (unsigned long long)tapesize); 541 } else { 542 double fetapes; 543 544 if (blocksperfile) 545 fetapes = (double) tapesize / blocksperfile; 546 else if (cartridge) { 547 /* Estimate number of tapes, assuming streaming stops at 548 the end of each block written, and not in mid-block. 549 Assume no erroneous blocks; this can be compensated 550 for with an artificially low tape size. */ 551 fetapes = 552 ( (double) tapesize /* blocks */ 553 * TP_BSIZE /* bytes/block */ 554 * (1.0/density) /* 0.1" / byte */ 555 + 556 (double) tapesize /* blocks */ 557 * (1.0/ntrec) /* streaming-stops per block */ 558 * 15.48 /* 0.1" / streaming-stop */ 559 ) * (1.0 / tsize ); /* tape / 0.1" */ 560 } else { 561 /* Estimate number of tapes, for old fashioned 9-track 562 tape */ 563 int tenthsperirg = (density == 625) ? 3 : 7; 564 fetapes = 565 ( tapesize /* blocks */ 566 * TP_BSIZE /* bytes / block */ 567 * (1.0/density) /* 0.1" / byte */ 568 + 569 tapesize /* blocks */ 570 * (1.0/ntrec) /* IRG's / block */ 571 * tenthsperirg /* 0.1" / IRG */ 572 ) * (1.0 / tsize ); /* tape / 0.1" */ 573 } 574 etapes = fetapes; /* truncating assignment */ 575 etapes++; 576 /* count the dumped inodes map on each additional tape */ 577 tapesize += (etapes - 1) * 578 (howmany(mapsize * sizeof(char), TP_BSIZE) + 1); 579 tapesize += etapes + 10; /* headers + 10 trailer blks */ 580 msg("estimated %llu tape blocks on %3.2f tape(s).\n", 581 (unsigned long long)tapesize, fetapes); 582 } 583 /* 584 * If the user only wants an estimate of the number of 585 * tapes, exit now. 586 */ 587 if (just_estimate) 588 exit(X_FINOK); 589 590 /* 591 * Allocate tape buffer. 592 */ 593 if (!alloctape()) 594 quit("can't allocate tape buffers - try a smaller blocking factor.\n"); 595 596 startnewtape(1); 597 (void)time((time_t *)&(tstart_writing)); 598 xferrate = 0; 599 dumpmap(usedinomap, TS_CLRI, maxino - 1); 600 601 msg("dumping (Pass III) [directories]\n"); 602 dirty = 0; /* XXX just to get gcc to shut up */ 603 for (map = dumpdirmap, ino = 1; ino < maxino; ino++) { 604 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */ 605 dirty = *map++; 606 else 607 dirty >>= 1; 608 if ((dirty & 1) == 0) 609 continue; 610 /* 611 * Skip directory inodes deleted and maybe reallocated 612 */ 613 dp = getino(ino); 614 if ((DIP(dp, mode) & IFMT) != IFDIR) 615 continue; 616 (void)dumpino(dp, ino); 617 } 618 619 msg("dumping (Pass IV) [regular files]\n"); 620 for (map = dumpinomap, ino = 1; ino < maxino; ino++) { 621 int mode; 622 623 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */ 624 dirty = *map++; 625 else 626 dirty >>= 1; 627 if ((dirty & 1) == 0) 628 continue; 629 /* 630 * Skip inodes deleted and reallocated as directories. 631 */ 632 dp = getino(ino); 633 mode = DIP(dp, mode) & IFMT; 634 if (mode == IFDIR) 635 continue; 636 (void)dumpino(dp, ino); 637 } 638 639 spcl.c_type = iswap32(TS_END); 640 for (i = 0; i < ntrec; i++) 641 writeheader(maxino - 1); 642 if (pipeout) 643 msg("%d tape blocks\n",iswap32(spcl.c_tapea)); 644 else 645 msg("%d tape blocks on %d volume%s\n", 646 iswap32(spcl.c_tapea), iswap32(spcl.c_volume), 647 (iswap32(spcl.c_volume) == 1) ? "" : "s"); 648 tnow = do_stats(); 649 date = iswap32(spcl.c_date); 650 msg("Date of this level %c dump: %s", level, 651 spcl.c_date == 0 ? "the epoch\n" : ctime(&date)); 652 msg("Date this dump completed: %s", ctime(&tnow)); 653 msg("Average transfer rate: %d KB/s\n", xferrate / tapeno); 654 putdumptime(); 655 trewind(0); 656 broadcast("DUMP IS DONE!\a\a\n"); 657 #ifdef DUMP_LFS 658 lfs_wrap_go(); 659 #endif /* DUMP_LFS */ 660 msg("DUMP IS DONE\n"); 661 Exit(X_FINOK); 662 /* NOTREACHED */ 663 exit(X_FINOK); /* XXX: to satisfy gcc */ 664 } 665 666 static void 667 usage(void) 668 { 669 const char *prog = getprogname(); 670 671 (void)fprintf(stderr, 672 "usage: %s [-0123456789aceFinStuX] [-B records] [-b blocksize]\n" 673 " [-d density] [-f file] [-h level] [-k read-blocksize]\n" 674 " [-L label] [-l timeout] [-r cachesize] [-s feet]\n" 675 " [-T date] [-x snap-backup] files-to-dump\n" 676 " %s [-W | -w]\n", prog, prog); 677 exit(X_STARTUP); 678 } 679 680 /* 681 * Pick up a numeric argument. It must be nonnegative and in the given 682 * range (except that a vmax of 0 means unlimited). 683 */ 684 static long 685 numarg(const char *meaning, long vmin, long vmax) 686 { 687 char *p; 688 long val; 689 690 val = strtol(optarg, &p, 10); 691 if (*p) 692 errx(X_STARTUP, "illegal %s -- %s", meaning, optarg); 693 if (val < vmin || (vmax && val > vmax)) 694 errx(X_STARTUP, "%s must be between %ld and %ld", 695 meaning, vmin, vmax); 696 return (val); 697 } 698 699 void 700 sig(int signo) 701 { 702 703 switch(signo) { 704 case SIGALRM: 705 case SIGBUS: 706 case SIGFPE: 707 case SIGHUP: 708 case SIGTERM: 709 case SIGTRAP: 710 if (pipeout) 711 quit("Signal on pipe: cannot recover\n"); 712 msg("Rewriting attempted as response to signal %s.\n", sys_siglist[signo]); 713 (void)fflush(stderr); 714 (void)fflush(stdout); 715 close_rewind(); 716 exit(X_REWRITE); 717 /* NOTREACHED */ 718 case SIGSEGV: 719 msg("SIGSEGV: ABORTING!\n"); 720 (void)signal(SIGSEGV, SIG_DFL); 721 (void)kill(0, SIGSEGV); 722 /* NOTREACHED */ 723 } 724 } 725 726 /* 727 * obsolete -- 728 * Change set of key letters and ordered arguments into something 729 * getopt(3) will like. 730 */ 731 static void 732 obsolete(int *argcp, char **argvp[]) 733 { 734 int argc, flags; 735 char *ap, **argv, *flagsp, **nargv, *p; 736 737 /* Setup. */ 738 argv = *argvp; 739 argc = *argcp; 740 741 /* Return if no arguments or first argument has leading dash. */ 742 ap = argv[1]; 743 if (argc == 1 || *ap == '-') 744 return; 745 746 /* Allocate space for new arguments. */ 747 *argvp = nargv = xmalloc((argc + 1) * sizeof(char *)); 748 p = flagsp = xmalloc(strlen(ap) + 2); 749 750 *nargv++ = *argv; 751 argv += 2; 752 753 for (flags = 0; *ap; ++ap) { 754 switch (*ap) { 755 case 'B': 756 case 'b': 757 case 'd': 758 case 'f': 759 case 'h': 760 case 's': 761 case 'T': 762 case 'x': 763 if (*argv == NULL) { 764 warnx("option requires an argument -- %c", *ap); 765 usage(); 766 } 767 nargv[0] = xmalloc(strlen(*argv) + 2 + 1); 768 nargv[0][0] = '-'; 769 nargv[0][1] = *ap; 770 (void)strcpy(&nargv[0][2], *argv); /* XXX safe strcpy */ 771 ++argv; 772 ++nargv; 773 break; 774 default: 775 if (!flags) { 776 *p++ = '-'; 777 flags = 1; 778 } 779 *p++ = *ap; 780 break; 781 } 782 } 783 784 /* Terminate flags. */ 785 if (flags) { 786 *p = '\0'; 787 *nargv++ = flagsp; 788 } else 789 free(flagsp); 790 791 /* Copy remaining arguments. */ 792 while ((*nargv++ = *argv++) != NULL) 793 ; 794 795 /* Update argument count. */ 796 *argcp = nargv - *argvp - 1; 797 } 798 799 800 void * 801 xcalloc(size_t number, size_t size) 802 { 803 void *p; 804 805 p = calloc(number, size); 806 if (p == NULL) 807 quit("%s\n", strerror(errno)); 808 return (p); 809 } 810 811 void * 812 xmalloc(size_t size) 813 { 814 void *p; 815 816 p = malloc(size); 817 if (p == NULL) 818 quit("%s\n", strerror(errno)); 819 return (p); 820 } 821 822 char * 823 xstrdup(const char *str) 824 { 825 char *p; 826 827 p = strdup(str); 828 if (p == NULL) 829 quit("%s\n", strerror(errno)); 830 return (p); 831 } 832
Indexes created Wed Oct 15 16:09:53 GMT 2025