main.c revision 1.75
1 /* $NetBSD: main.c,v 1.75 2019/03/25 02:13:01 manu 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 1.75 2019/03/25 02:13:01 manu 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 #include <sys/sysctl.h> 51 52 #include <ufs/ffs/fs.h> 53 #include <ufs/ffs/ffs_extern.h> 54 55 #include <ctype.h> 56 #include <err.h> 57 #include <errno.h> 58 #include <fcntl.h> 59 #include <fstab.h> 60 #include <signal.h> 61 #include <stdio.h> 62 #include <stdlib.h> 63 #include <string.h> 64 #include <time.h> 65 #include <unistd.h> 66 #include <util.h> 67 68 #include "dump.h" 69 #include "pathnames.h" 70 #include "snapshot.h" 71 72 int timestamp; /* print message timestamps */ 73 int notify; /* notify operator flag */ 74 int blockswritten; /* number of blocks written on current tape */ 75 int tapeno; /* current tape number */ 76 int density; /* density in bytes/0.1" */ 77 int ntrec = NTREC; /* # tape blocks in each tape record */ 78 int cartridge; /* Assume non-cartridge tape */ 79 long dev_bsize = 1; /* recalculated below */ 80 long blocksperfile; /* output blocks per file */ 81 const char *host; /* remote host (if any) */ 82 int readcache = -1; /* read cache size (in readblksize blks) */ 83 int readblksize = -1; /* read block size */ 84 char default_time_string[] = "%T %Z"; /* default timestamp string */ 85 char *time_string = default_time_string; /* timestamp string */ 86 87 static long numarg(const char *, long, long); 88 static void obsolete(int *, char **[]); 89 static void usage(void); 90 91 int 92 main(int argc, char *argv[]) 93 { 94 ino_t ino; 95 int dirty; 96 union dinode *dp; 97 struct fstab *dt; 98 struct statvfs *mntinfo, fsbuf; 99 char *map, *cp; 100 int ch; 101 int i, anydirskipped, bflag = 0, Tflag = 0, Fflag = 0, honorlevel = 1; 102 int snap_internal = 0; 103 ino_t maxino; 104 time_t tnow, date; 105 int dirc; 106 char *mountpoint; 107 int just_estimate = 0; 108 char labelstr[LBLSIZE]; 109 char buf[MAXPATHLEN], rbuf[MAXPATHLEN]; 110 char *new_time_format; 111 char *snap_backup = NULL; 112 113 spcl.c_date = 0; 114 (void)time(&tnow); 115 spcl.c_date = tnow; 116 tzset(); /* set up timezone for strftime */ 117 if ((new_time_format = getenv("TIMEFORMAT")) != NULL) 118 time_string = new_time_format; 119 120 tsize = 0; /* Default later, based on 'c' option for cart tapes */ 121 if ((tape = getenv("TAPE")) == NULL) 122 tape = _PATH_DEFTAPE; 123 dumpdates = _PATH_DUMPDATES; 124 temp = _PATH_DTMP; 125 strcpy(labelstr, "none"); /* XXX safe strcpy. */ 126 if (TP_BSIZE / DEV_BSIZE == 0 || TP_BSIZE % DEV_BSIZE != 0) 127 quit("TP_BSIZE must be a multiple of DEV_BSIZE"); 128 level = '0'; 129 timestamp = 0; 130 131 if (argc < 2) 132 usage(); 133 134 obsolete(&argc, &argv); 135 while ((ch = getopt(argc, argv, 136 "0123456789aB:b:cd:eFf:h:ik:l:L:nr:s:StT:uU:Wwx:X")) != -1) 137 switch (ch) { 138 /* dump level */ 139 case '0': case '1': case '2': case '3': case '4': 140 case '5': case '6': case '7': case '8': case '9': 141 level = ch; 142 break; 143 144 case 'a': /* `auto-size', Write to EOM. */ 145 unlimited = 1; 146 break; 147 148 case 'B': /* blocks per output file */ 149 blocksperfile = numarg("blocks per file", 1L, 0L); 150 break; 151 152 case 'b': /* blocks per tape write */ 153 ntrec = numarg("blocks per write", 1L, 1000L); 154 bflag = 1; 155 break; 156 157 case 'c': /* Tape is cart. not 9-track */ 158 cartridge = 1; 159 break; 160 161 case 'd': /* density, in bits per inch */ 162 density = numarg("density", 10L, 327670L) / 10; 163 if (density >= 625 && !bflag) 164 ntrec = HIGHDENSITYTREC; 165 break; 166 167 case 'e': /* eject full tapes */ 168 eflag = 1; 169 break; 170 171 case 'F': /* files-to-dump is an fs image */ 172 Fflag = 1; 173 break; 174 175 case 'f': /* output file */ 176 tape = optarg; 177 break; 178 179 case 'h': 180 honorlevel = numarg("honor level", 0L, 10L); 181 break; 182 183 case 'i': /* "true incremental" regardless level */ 184 level = 'i'; 185 trueinc = 1; 186 break; 187 188 case 'k': 189 readblksize = numarg("read block size", 0, 64) * 1024; 190 break; 191 192 case 'l': /* autoload after eject full tapes */ 193 eflag = 1; 194 lflag = numarg("timeout (in seconds)", 1, 0); 195 break; 196 197 case 'L': 198 /* 199 * Note that although there are LBLSIZE characters, 200 * the last must be '\0', so the limit on strlen() 201 * is really LBLSIZE-1. 202 */ 203 if (strlcpy(labelstr, optarg, sizeof(labelstr)) 204 >= sizeof(labelstr)) { 205 msg( 206 "WARNING Label `%s' is larger than limit of %lu characters.\n", 207 optarg, 208 (unsigned long)sizeof(labelstr) - 1); 209 msg("WARNING: Using truncated label `%s'.\n", 210 labelstr); 211 } 212 break; 213 case 'n': /* notify operators */ 214 notify = 1; 215 break; 216 217 case 'r': /* read cache size */ 218 readcache = numarg("read cache size", 0, 512); 219 break; 220 221 case 's': /* tape size, feet */ 222 tsize = numarg("tape size", 1L, 0L) * 12 * 10; 223 break; 224 225 case 'S': /* exit after estimating # of tapes */ 226 just_estimate = 1; 227 break; 228 229 case 't': 230 timestamp = 1; 231 break; 232 233 case 'T': /* time of last dump */ 234 spcl.c_ddate = unctime(optarg); 235 if (spcl.c_ddate < 0) { 236 (void)fprintf(stderr, "bad time \"%s\"\n", 237 optarg); 238 exit(X_STARTUP); 239 } 240 Tflag = 1; 241 lastlevel = '?'; 242 break; 243 244 case 'u': /* update /etc/dumpdates */ 245 uflag = 1; 246 break; 247 248 case 'U': /* dump device in /etc/dumpdates */ 249 dumpdev = optarg; 250 break; 251 252 case 'W': /* what to do */ 253 case 'w': 254 lastdump(ch); 255 exit(X_FINOK); /* do nothing else */ 256 257 case 'x': 258 snap_backup = optarg; 259 break; 260 261 case 'X': 262 snap_internal = 1; 263 break; 264 265 default: 266 usage(); 267 } 268 argc -= optind; 269 argv += optind; 270 271 if (argc < 1) { 272 (void)fprintf(stderr, 273 "Must specify disk or image, or file list\n"); 274 exit(X_STARTUP); 275 } 276 277 278 /* 279 * determine if disk is a subdirectory, and setup appropriately 280 */ 281 getfstab(); /* /etc/fstab snarfed */ 282 disk = NULL; 283 disk_dev = NULL; 284 mountpoint = NULL; 285 dirc = 0; 286 for (i = 0; i < argc; i++) { 287 struct stat sb; 288 int error; 289 290 error = lstat(argv[i], &sb); 291 if (Fflag || (!error && (S_ISCHR(sb.st_mode) || S_ISBLK(sb.st_mode)))) { 292 if (error) 293 quite(errno, "can't stat %s", argv[i]); 294 disk = argv[i]; 295 multicheck: 296 if (dirc != 0) 297 quit("can't dump a disk or image at the same" 298 " time as a file list"); 299 break; 300 } 301 if ((dt = fstabsearch(argv[i])) != NULL) { 302 disk = argv[i]; 303 mountpoint = xstrdup(dt->fs_file); 304 goto multicheck; 305 } 306 if (statvfs(argv[i], &fsbuf) == -1) 307 quite(errno, "can't statvfs %s", argv[i]); 308 disk = fsbuf.f_mntfromname; 309 if (strcmp(argv[i], fsbuf.f_mntonname) == 0) 310 goto multicheck; 311 if (mountpoint == NULL) { 312 mountpoint = xstrdup(fsbuf.f_mntonname); 313 if (uflag) { 314 msg("Ignoring u flag for subdir dump\n"); 315 uflag = 0; 316 } 317 if (level > '0') { 318 msg("Subdir dump is done at level 0\n"); 319 level = '0'; 320 } 321 msg("Dumping sub files/directories from %s\n", 322 mountpoint); 323 } else { 324 if (strcmp(mountpoint, fsbuf.f_mntonname) != 0) 325 quit("%s is not on %s", argv[i], mountpoint); 326 } 327 msg("Dumping file/directory %s\n", argv[i]); 328 dirc++; 329 } 330 if (mountpoint) 331 free(mountpoint); 332 333 if (dirc == 0) { 334 argv++; 335 if (argc != 1) { 336 (void)fprintf(stderr, "Excess arguments to dump:"); 337 while (--argc) 338 (void)fprintf(stderr, " %s", *argv++); 339 (void)fprintf(stderr, "\n"); 340 exit(X_STARTUP); 341 } 342 } 343 if (Tflag && uflag) { 344 (void)fprintf(stderr, 345 "You cannot use the T and u flags together.\n"); 346 exit(X_STARTUP); 347 } 348 if (strcmp(tape, "-") == 0) { 349 pipeout++; 350 tape = "standard output"; 351 } 352 353 if (blocksperfile) 354 blocksperfile = blocksperfile / ntrec * ntrec; /* round down */ 355 else if (!unlimited) { 356 /* 357 * Determine how to default tape size and density 358 * 359 * density tape size 360 * 9-track 1600 bpi (160 bytes/.1") 2300 ft. 361 * 9-track 6250 bpi (625 bytes/.1") 2300 ft. 362 * cartridge 8000 bpi (100 bytes/.1") 1700 ft. 363 * (450*4 - slop) 364 */ 365 if (density == 0) 366 density = cartridge ? 100 : 160; 367 if (tsize == 0) 368 tsize = cartridge ? 1700L*120L : 2300L*120L; 369 } 370 371 if ((cp = strchr(tape, ':')) != NULL) { 372 host = tape; 373 /* This is fine, because all the const strings don't have : */ 374 *cp++ = '\0'; 375 tape = cp; 376 #ifdef RDUMP 377 if (rmthost(host) == 0) 378 exit(X_STARTUP); 379 #else 380 (void)fprintf(stderr, "remote dump not enabled\n"); 381 exit(X_STARTUP); 382 #endif 383 } 384 385 if (signal(SIGHUP, SIG_IGN) != SIG_IGN) 386 signal(SIGHUP, sig); 387 if (signal(SIGTRAP, SIG_IGN) != SIG_IGN) 388 signal(SIGTRAP, sig); 389 if (signal(SIGFPE, SIG_IGN) != SIG_IGN) 390 signal(SIGFPE, sig); 391 if (signal(SIGBUS, SIG_IGN) != SIG_IGN) 392 signal(SIGBUS, sig); 393 #if 0 394 if (signal(SIGSEGV, SIG_IGN) != SIG_IGN) 395 signal(SIGSEGV, sig); 396 #endif 397 if (signal(SIGTERM, SIG_IGN) != SIG_IGN) 398 signal(SIGTERM, sig); 399 if (signal(SIGINT, interrupt) == SIG_IGN) 400 signal(SIGINT, SIG_IGN); 401 402 /* 403 * disk can be either the full special file name, or 404 * the file system name. 405 */ 406 mountpoint = NULL; 407 mntinfo = mntinfosearch(disk); 408 if ((dt = fstabsearch(disk)) != NULL) { 409 if (getfsspecname(buf, sizeof(buf), dt->fs_spec) == NULL) 410 quite(errno, "can't resolve mount %s (%s)", dt->fs_spec, 411 buf); 412 if (getdiskrawname(rbuf, sizeof(rbuf), buf) == NULL) 413 quite(errno, "can't get disk raw name for %s", buf); 414 disk = rbuf; 415 mountpoint = dt->fs_file; 416 msg("Found %s on %s in %s\n", disk, mountpoint, _PATH_FSTAB); 417 } else if (mntinfo != NULL) { 418 if (getdiskrawname(rbuf, sizeof(rbuf), mntinfo->f_mntfromname) 419 == NULL) 420 quite(errno, "can't get disk raw name for %s", 421 mntinfo->f_mntfromname); 422 disk = rbuf; 423 mountpoint = mntinfo->f_mntonname; 424 msg("Found %s on %s in mount table\n", disk, mountpoint); 425 } 426 if (mountpoint != NULL) { 427 if (dirc != 0) 428 (void)snprintf(spcl.c_filesys, sizeof(spcl.c_filesys), 429 "a subset of %s", mountpoint); 430 else 431 (void)strlcpy(spcl.c_filesys, mountpoint, 432 sizeof(spcl.c_filesys)); 433 } else if (Fflag) { 434 (void)strlcpy(spcl.c_filesys, "a file system image", 435 sizeof(spcl.c_filesys)); 436 } else { 437 (void)strlcpy(spcl.c_filesys, "an unlisted file system", 438 sizeof(spcl.c_filesys)); 439 } 440 (void)strlcpy(spcl.c_dev, disk, sizeof(spcl.c_dev)); 441 (void)strlcpy(spcl.c_label, labelstr, sizeof(spcl.c_label)); 442 (void)gethostname(spcl.c_host, sizeof(spcl.c_host)); 443 spcl.c_host[sizeof(spcl.c_host) - 1] = '\0'; 444 445 if ((snap_backup != NULL || snap_internal) && mntinfo == NULL) { 446 msg("WARNING: Cannot use -x or -X on unmounted file system.\n"); 447 snap_backup = NULL; 448 snap_internal = 0; 449 } 450 451 #ifdef DUMP_LFS 452 sync(); 453 if (snap_backup != NULL || snap_internal) { 454 if (lfs_wrap_stop(mountpoint) < 0) { 455 msg("Cannot stop writing on %s\n", mountpoint); 456 exit(X_STARTUP); 457 } 458 } 459 if ((diskfd = open(disk, O_RDONLY)) < 0) { 460 msg("Cannot open %s\n", disk); 461 exit(X_STARTUP); 462 } 463 disk_dev = disk; 464 #else /* ! DUMP_LFS */ 465 if (snap_backup != NULL || snap_internal) { 466 diskfd = snap_open(mntinfo->f_mntonname, snap_backup, 467 &tnow, &disk_dev); 468 if (diskfd < 0) { 469 msg("Cannot open snapshot of %s\n", 470 mntinfo->f_mntonname); 471 exit(X_STARTUP); 472 } 473 spcl.c_date = tnow; 474 } else { 475 if ((diskfd = open(disk, O_RDONLY)) < 0) { 476 msg("Cannot open %s\n", disk); 477 exit(X_STARTUP); 478 } 479 disk_dev = disk; 480 } 481 sync(); 482 #endif /* ! DUMP_LFS */ 483 484 needswap = fs_read_sblock(sblock_buf); 485 486 /* true incremental is always a level 10 dump */ 487 spcl.c_level = trueinc? iswap32(10): iswap32(level - '0'); 488 spcl.c_type = iswap32(TS_TAPE); 489 spcl.c_date = iswap32(spcl.c_date); 490 spcl.c_ddate = iswap32(spcl.c_ddate); 491 if (!Tflag) 492 getdumptime(); /* /etc/dumpdates snarfed */ 493 494 date = iswap32(spcl.c_date); 495 msg("Date of this level %c dump: %s", level, 496 spcl.c_date == 0 ? "the epoch\n" : ctime(&date)); 497 date = iswap32(spcl.c_ddate); 498 msg("Date of last level %c dump: %s", lastlevel, 499 spcl.c_ddate == 0 ? "the epoch\n" : ctime(&date)); 500 msg("Dumping "); 501 if (snap_backup != NULL || snap_internal) 502 msgtail("a snapshot of "); 503 if (dirc != 0) 504 msgtail("a subset of "); 505 msgtail("%s (%s) ", disk, spcl.c_filesys); 506 if (host) 507 msgtail("to %s on host %s\n", tape, host); 508 else 509 msgtail("to %s\n", tape); 510 msg("Label: %s\n", labelstr); 511 512 ufsib = fs_parametrize(); 513 514 dev_bshift = ffs(dev_bsize) - 1; 515 if (dev_bsize != (1 << dev_bshift)) 516 quit("dev_bsize (%ld) is not a power of 2", dev_bsize); 517 tp_bshift = ffs(TP_BSIZE) - 1; 518 if (TP_BSIZE != (1 << tp_bshift)) 519 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE); 520 maxino = fs_maxino(); 521 mapsize = roundup(howmany(maxino, NBBY), TP_BSIZE); 522 usedinomap = (char *)xcalloc((unsigned) mapsize, sizeof(char)); 523 dumpdirmap = (char *)xcalloc((unsigned) mapsize, sizeof(char)); 524 dumpinomap = (char *)xcalloc((unsigned) mapsize, sizeof(char)); 525 tapesize = 3 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1); 526 527 nonodump = iswap32(spcl.c_level) < honorlevel; 528 529 initcache(readcache, readblksize); 530 531 (void)signal(SIGINFO, statussig); 532 533 msg("mapping (Pass I) [regular files]\n"); 534 anydirskipped = mapfiles(maxino, &tapesize, mountpoint, 535 (dirc ? argv : NULL)); 536 537 msg("mapping (Pass II) [directories]\n"); 538 while (anydirskipped) { 539 anydirskipped = mapdirs(maxino, &tapesize); 540 } 541 542 if (pipeout || unlimited) { 543 tapesize += 10; /* 10 trailer blocks */ 544 msg("estimated %llu tape blocks.\n", 545 (unsigned long long)tapesize); 546 } else { 547 double fetapes; 548 549 if (blocksperfile) 550 fetapes = (double) tapesize / blocksperfile; 551 else if (cartridge) { 552 /* Estimate number of tapes, assuming streaming stops at 553 the end of each block written, and not in mid-block. 554 Assume no erroneous blocks; this can be compensated 555 for with an artificially low tape size. */ 556 fetapes = 557 ( (double) tapesize /* blocks */ 558 * TP_BSIZE /* bytes/block */ 559 * (1.0/density) /* 0.1" / byte */ 560 + 561 (double) tapesize /* blocks */ 562 * (1.0/ntrec) /* streaming-stops per block */ 563 * 15.48 /* 0.1" / streaming-stop */ 564 ) * (1.0 / tsize ); /* tape / 0.1" */ 565 } else { 566 /* Estimate number of tapes, for old fashioned 9-track 567 tape */ 568 int tenthsperirg = (density == 625) ? 3 : 7; 569 fetapes = 570 ( tapesize /* blocks */ 571 * TP_BSIZE /* bytes / block */ 572 * (1.0/density) /* 0.1" / byte */ 573 + 574 tapesize /* blocks */ 575 * (1.0/ntrec) /* IRG's / block */ 576 * tenthsperirg /* 0.1" / IRG */ 577 ) * (1.0 / tsize ); /* tape / 0.1" */ 578 } 579 etapes = fetapes; /* truncating assignment */ 580 etapes++; 581 /* count the dumped inodes map on each additional tape */ 582 tapesize += (etapes - 1) * 583 (howmany(mapsize * sizeof(char), TP_BSIZE) + 1); 584 tapesize += etapes + 10; /* headers + 10 trailer blks */ 585 msg("estimated %llu tape blocks on %3.2f tape(s).\n", 586 (unsigned long long)tapesize, fetapes); 587 } 588 /* 589 * If the user only wants an estimate of the number of 590 * tapes, exit now. 591 */ 592 if (just_estimate) 593 exit(X_FINOK); 594 595 /* 596 * Allocate tape buffer. 597 */ 598 if (!alloctape()) 599 quit("can't allocate tape buffers - try a smaller" 600 " blocking factor."); 601 602 startnewtape(1); 603 (void)time((time_t *)&(tstart_writing)); 604 xferrate = 0; 605 dumpmap(usedinomap, TS_CLRI, maxino - 1); 606 607 msg("dumping (Pass III) [directories]\n"); 608 dirty = 0; /* XXX just to get gcc to shut up */ 609 for (map = dumpdirmap, ino = 1; ino < maxino; ino++) { 610 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */ 611 dirty = *map++; 612 else 613 dirty >>= 1; 614 if ((dirty & 1) == 0) 615 continue; 616 /* 617 * Skip directory inodes deleted and maybe reallocated 618 */ 619 dp = getino(ino); 620 if ((DIP(dp, mode) & IFMT) != IFDIR) 621 continue; 622 (void)dumpino(dp, ino); 623 } 624 625 msg("dumping (Pass IV) [regular files]\n"); 626 for (map = dumpinomap, ino = 1; ino < maxino; ino++) { 627 int mode; 628 629 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */ 630 dirty = *map++; 631 else 632 dirty >>= 1; 633 if ((dirty & 1) == 0) 634 continue; 635 /* 636 * Skip inodes deleted and reallocated as directories. 637 */ 638 dp = getino(ino); 639 mode = DIP(dp, mode) & IFMT; 640 if (mode == IFDIR) 641 continue; 642 (void)dumpino(dp, ino); 643 } 644 645 spcl.c_type = iswap32(TS_END); 646 for (i = 0; i < ntrec; i++) 647 writeheader(maxino - 1); 648 if (pipeout) 649 msg("%lld tape blocks\n",(long long)iswap64(spcl.c_tapea)); 650 else 651 msg("%lld tape blocks on %d volume%s\n", 652 (long long)iswap64(spcl.c_tapea), iswap32(spcl.c_volume), 653 (iswap32(spcl.c_volume) == 1) ? "" : "s"); 654 tnow = do_stats(); 655 date = iswap32(spcl.c_date); 656 msg("Date of this level %c dump: %s", level, 657 spcl.c_date == 0 ? "the epoch\n" : ctime(&date)); 658 msg("Date this dump completed: %s", ctime(&tnow)); 659 msg("Average transfer rate: %d KB/s\n", xferrate / tapeno); 660 putdumptime(); 661 trewind(0); 662 broadcast("DUMP IS DONE!\a\a\n"); 663 #ifdef DUMP_LFS 664 lfs_wrap_go(); 665 #endif /* DUMP_LFS */ 666 msg("DUMP IS DONE\n"); 667 Exit(X_FINOK); 668 /* NOTREACHED */ 669 exit(X_FINOK); /* XXX: to satisfy gcc */ 670 } 671 672 static void 673 usage(void) 674 { 675 const char *prog = getprogname(); 676 677 (void)fprintf(stderr, 678 "usage: %s [-0123456789aceFinStuX] [-B records] [-b blocksize]\n" 679 " [-d density] [-f file] [-h level] [-k read-blocksize]\n" 680 " [-L label] [-l timeout] [-r cachesize] [-s feet]\n" 681 " [-T date] [-U dumpdev] [-x snap-backup] files-to-dump\n" 682 " %s [-W | -w]\n", prog, prog); 683 exit(X_STARTUP); 684 } 685 686 /* 687 * Pick up a numeric argument. It must be nonnegative and in the given 688 * range (except that a vmax of 0 means unlimited). 689 */ 690 static long 691 numarg(const char *meaning, long vmin, long vmax) 692 { 693 char *p; 694 long val; 695 696 val = strtol(optarg, &p, 10); 697 if (*p) 698 errx(X_STARTUP, "illegal %s -- %s", meaning, optarg); 699 if (val < vmin || (vmax && val > vmax)) 700 errx(X_STARTUP, "%s must be between %ld and %ld", 701 meaning, vmin, vmax); 702 return (val); 703 } 704 705 void 706 sig(int signo) 707 { 708 709 switch(signo) { 710 case SIGALRM: 711 case SIGBUS: 712 case SIGFPE: 713 case SIGHUP: 714 case SIGTERM: 715 case SIGTRAP: 716 if (pipeout) 717 quit("Signal on pipe: cannot recover"); 718 msg("Rewriting attempted as response to signal %s.\n", sys_siglist[signo]); 719 (void)fflush(stderr); 720 (void)fflush(stdout); 721 close_rewind(); 722 exit(X_REWRITE); 723 /* NOTREACHED */ 724 case SIGSEGV: 725 msg("SIGSEGV: ABORTING!\n"); 726 (void)signal(SIGSEGV, SIG_DFL); 727 (void)kill(0, SIGSEGV); 728 /* NOTREACHED */ 729 } 730 } 731 732 /* 733 * obsolete -- 734 * Change set of key letters and ordered arguments into something 735 * getopt(3) will like. 736 */ 737 static void 738 obsolete(int *argcp, char **argvp[]) 739 { 740 int argc, flags; 741 char *ap, **argv, *flagsp, **nargv, *p; 742 743 /* Setup. */ 744 argv = *argvp; 745 argc = *argcp; 746 747 /* Return if no arguments or first argument has leading dash. */ 748 ap = argv[1]; 749 if (argc == 1 || *ap == '-') 750 return; 751 752 /* Allocate space for new arguments. */ 753 *argvp = nargv = xmalloc((argc + 1) * sizeof(char *)); 754 p = flagsp = xmalloc(strlen(ap) + 2); 755 756 *nargv++ = *argv; 757 argv += 2; 758 759 for (flags = 0; *ap; ++ap) { 760 switch (*ap) { 761 case 'B': 762 case 'b': 763 case 'd': 764 case 'f': 765 case 'h': 766 case 's': 767 case 'T': 768 case 'x': 769 if (*argv == NULL) { 770 warnx("option requires an argument -- %c", *ap); 771 usage(); 772 } 773 nargv[0] = xmalloc(strlen(*argv) + 2 + 1); 774 nargv[0][0] = '-'; 775 nargv[0][1] = *ap; 776 (void)strcpy(&nargv[0][2], *argv); /* XXX safe strcpy */ 777 ++argv; 778 ++nargv; 779 break; 780 default: 781 if (!flags) { 782 *p++ = '-'; 783 flags = 1; 784 } 785 *p++ = *ap; 786 break; 787 } 788 } 789 790 /* Terminate flags. */ 791 if (flags) { 792 *p = '\0'; 793 *nargv++ = flagsp; 794 } else 795 free(flagsp); 796 797 /* Copy remaining arguments. */ 798 while ((*nargv++ = *argv++) != NULL) 799 ; 800 801 /* Update argument count. */ 802 *argcp = nargv - *argvp - 1; 803 } 804 805 806 void * 807 xcalloc(size_t number, size_t size) 808 { 809 void *p; 810 811 p = calloc(number, size); 812 if (p == NULL) 813 quite(errno, "Can't allocate %zu bytes", size * number); 814 return (p); 815 } 816 817 void * 818 xmalloc(size_t size) 819 { 820 void *p; 821 822 p = malloc(size); 823 if (p == NULL) 824 quite(errno, "Can't allocate %zu bytes", size); 825 return (p); 826 } 827 828 char * 829 xstrdup(const char *str) 830 { 831 char *p; 832 833 p = strdup(str); 834 if (p == NULL) 835 quite(errno, "Can't copy %s", str); 836 return (p); 837 } 838
Indexes created Thu Sep 25 02:09:54 GMT 2025