1 /* $OpenBSD: main.c,v 1.62 2021/01/21 00:16:36 mortimer Exp $ */ 2 /* $NetBSD: main.c,v 1.14 1997/06/05 11:13:24 lukem Exp $ */ 3 4 /*- 5 * Copyright (c) 1980, 1991, 1993, 1994 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #include <sys/param.h> /* MAXBSIZE DEV_BSIZE roundup */ 34 #include <sys/mount.h> 35 #include <sys/stat.h> 36 #include <sys/time.h> 37 #include <sys/ioctl.h> 38 #include <sys/disklabel.h> 39 #include <sys/dkio.h> 40 #include <ufs/ffs/fs.h> 41 #include <ufs/ufs/dinode.h> 42 43 #include <protocols/dumprestore.h> 44 45 #include <ctype.h> 46 #include <err.h> 47 #include <errno.h> 48 #include <fcntl.h> 49 #include <fstab.h> 50 #include <paths.h> 51 #include <signal.h> 52 #include <stdio.h> 53 #include <stdlib.h> 54 #include <string.h> 55 #include <time.h> 56 #include <unistd.h> 57 #include <limits.h> 58 #include <util.h> 59 60 #include "dump.h" 61 #include "pathnames.h" 62 63 int mapsize; /* size of the state maps */ 64 char *usedinomap; /* map of allocated inodes */ 65 char *dumpdirmap; /* map of directories to be dumped */ 66 char *dumpinomap; /* map of files to be dumped */ 67 char *disk; /* name of the disk file */ 68 char *tape; /* name of the tape file */ 69 char level; /* dump level of this dump */ 70 int uflag; /* update flag */ 71 int diskfd; /* disk file descriptor */ 72 int pipeout; /* true => output to standard output */ 73 int density = 0; /* density in bytes/0.1" */ 74 int64_t tapesize; /* estimated tape size, blocks */ 75 int64_t tsize; /* tape size in 0.1" units */ 76 int etapes; /* estimated number of tapes */ 77 int nonodump; /* if set, do not honor UF_NODUMP user flags */ 78 int unlimited; /* if set, write to end of medium */ 79 int notify = 0; /* notify operator flag */ 80 int64_t blockswritten = 0; /* number of blocks written on current tape */ 81 int tapeno = 0; /* current tape number */ 82 int ntrec = NTREC; /* # tape blocks in each tape record */ 83 int64_t blocksperfile; /* output blocks per file */ 84 int cartridge = 0; /* Assume non-cartridge tape */ 85 char *host = NULL; /* remote host (if any) */ 86 time_t tstart_writing; /* when started writing the first tape block */ 87 long xferrate; /* averaged transfer rate of all volumes */ 88 struct fs *sblock; /* the file system super block */ 89 char sblock_buf[MAXBSIZE]; 90 int tp_bshift; /* log2(TP_BSIZE) */ 91 char *duid; /* duid of the disk being dumped */ 92 int maxbsize = 64*1024; /* XXX MAXBSIZE from sys/param.h */ 93 94 struct disklabel lab; 95 96 /* 97 * Possible superblock locations ordered from most to least likely. 98 */ 99 static int sblock_try[] = SBLOCKSEARCH; 100 101 static long long numarg(char *, long long, long long); 102 static void obsolete(int *, char **[]); 103 static void usage(void); 104 105 int 106 main(int argc, char *argv[]) 107 { 108 ino_t ino; 109 int dirty; 110 union dinode *dp; 111 struct fstab *dt; 112 char *map; 113 int ch, mode; 114 struct tm then; 115 struct statfs fsbuf; 116 int i, anydirskipped, bflag = 0, Tflag = 0, honorlevel = 1; 117 ino_t maxino; 118 time_t t; 119 int dirlist; 120 char *toplevel, *str, *mount_point = NULL, *realpath; 121 int just_estimate = 0; 122 u_int64_t zero_uid = 0; 123 124 spcl.c_date = (int64_t)time(NULL); 125 126 tsize = 0; /* Default later, based on 'c' option for cart tapes */ 127 if ((tape = getenv("TAPE")) == NULL) 128 tape = _PATH_DEFTAPE; 129 dumpdates = _PATH_DUMPDATES; 130 if (TP_BSIZE / DEV_BSIZE == 0 || TP_BSIZE % DEV_BSIZE != 0) 131 quit("TP_BSIZE must be a multiple of DEV_BSIZE\n"); 132 level = '0'; 133 134 if (argc < 2) 135 usage(); 136 137 obsolete(&argc, &argv); 138 while ((ch = getopt(argc, argv, "0123456789aB:b:cd:f:h:ns:ST:uWw")) != -1) 139 switch (ch) { 140 /* dump level */ 141 case '0': case '1': case '2': case '3': case '4': 142 case '5': case '6': case '7': case '8': case '9': 143 level = ch; 144 break; 145 146 case 'B': /* blocks per output file */ 147 blocksperfile = numarg("blocks per file", 1, 0); 148 break; 149 150 case 'b': /* blocks per tape write */ 151 ntrec = numarg("blocks per write", 1, 1000); 152 if (ntrec > maxbsize/1024) { 153 msg("Please choose a blocksize <= %dKB\n", 154 maxbsize/1024); 155 exit(X_STARTUP); 156 } 157 bflag = 1; 158 break; 159 160 case 'c': /* Tape is cart. not 9-track */ 161 cartridge = 1; 162 break; 163 164 case 'd': /* density, in bits per inch */ 165 density = numarg("density", 10, 327670) / 10; 166 if (density >= 625 && !bflag) 167 ntrec = HIGHDENSITYTREC; 168 break; 169 170 case 'f': /* output file */ 171 tape = optarg; 172 break; 173 174 case 'h': 175 honorlevel = numarg("honor level", 0, 10); 176 break; 177 178 case 'n': /* notify operators */ 179 notify = 1; 180 break; 181 182 case 's': /* tape size, feet */ 183 tsize = numarg("tape size", 1, 0) * 12 * 10; 184 break; 185 186 case 'S': /* estimate blocks and # of tapes */ 187 just_estimate = 1; 188 break; 189 190 case 'T': /* time of last dump */ 191 str = strptime(optarg, "%a %b %e %H:%M:%S %Y", &then); 192 then.tm_isdst = -1; 193 if (str == NULL || (*str != '\n' && *str != '\0')) 194 spcl.c_ddate = -1; 195 else 196 spcl.c_ddate = (int64_t)mktime(&then); 197 if (spcl.c_ddate < 0) { 198 (void)fprintf(stderr, "bad time \"%s\"\n", 199 optarg); 200 exit(X_STARTUP); 201 } 202 Tflag = 1; 203 lastlevel = '?'; 204 break; 205 206 case 'u': /* update /etc/dumpdates */ 207 uflag = 1; 208 break; 209 210 case 'W': /* what to do */ 211 case 'w': 212 lastdump(ch); 213 exit(X_FINOK); /* do nothing else */ 214 break; 215 216 case 'a': /* `auto-size', Write to EOM. */ 217 unlimited = 1; 218 break; 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 filesystem\n"); 228 exit(X_STARTUP); 229 } 230 231 /* 232 * determine if disk is a subdirectory, and setup appropriately 233 */ 234 dirlist = 0; 235 toplevel = NULL; 236 for (i = 0; i < argc; i++) { 237 struct stat sb; 238 239 /* Convert potential duid into a device name */ 240 if ((diskfd = opendev(argv[i], O_RDONLY | O_NOFOLLOW, 0, 241 &realpath)) >= 0) { 242 argv[i] = strdup(realpath); 243 if (argv[i] == NULL) { 244 msg("Cannot malloc realpath\n"); 245 exit(X_STARTUP); 246 } 247 (void)close(diskfd); 248 } 249 if (lstat(argv[i], &sb) == -1) { 250 msg("Cannot lstat %s: %s\n", argv[i], strerror(errno)); 251 exit(X_STARTUP); 252 } 253 if (!S_ISDIR(sb.st_mode) && !S_ISREG(sb.st_mode)) 254 break; 255 if (statfs(argv[i], &fsbuf) == -1) { 256 msg("Cannot statfs %s: %s\n", argv[i], strerror(errno)); 257 exit(X_STARTUP); 258 } 259 if (strcmp(argv[i], fsbuf.f_mntonname) == 0) { 260 if (dirlist != 0) { 261 msg("Can't dump a mountpoint and a filelist\n"); 262 exit(X_STARTUP); 263 } 264 break; /* exit if sole mountpoint */ 265 } 266 if (!disk) { 267 if ((toplevel = strdup(fsbuf.f_mntonname)) == NULL) { 268 msg("Cannot malloc diskname\n"); 269 exit(X_STARTUP); 270 } 271 disk = toplevel; 272 if (uflag) { 273 msg("Ignoring u flag for subdir dump\n"); 274 uflag = 0; 275 } 276 if (level > '0') { 277 msg("Subdir dump is done at level 0\n"); 278 level = '0'; 279 } 280 msg("Dumping sub files/directories from %s\n", disk); 281 } else { 282 if (strcmp(disk, fsbuf.f_mntonname) != 0) { 283 msg("%s is not on %s\n", argv[i], disk); 284 exit(X_STARTUP); 285 } 286 } 287 msg("Dumping file/directory %s\n", argv[i]); 288 dirlist++; 289 } 290 if (dirlist == 0) { 291 disk = *argv++; 292 if (argc != 1) { 293 (void)fputs("Excess arguments to dump:", stderr); 294 while (--argc) { 295 (void)putc(' ', stderr); 296 (void)fputs(*argv++, stderr); 297 } 298 (void)putc('\n', stderr); 299 exit(X_STARTUP); 300 } 301 } 302 if (Tflag && uflag) { 303 (void)fprintf(stderr, 304 "You cannot use the T and u flags together.\n"); 305 exit(X_STARTUP); 306 } 307 if (strcmp(tape, "-") == 0) { 308 pipeout++; 309 tape = "standard output"; 310 } 311 312 if (blocksperfile) 313 blocksperfile = blocksperfile / ntrec * ntrec; /* round down */ 314 else if (!unlimited) { 315 /* 316 * Determine how to default tape size and density 317 * 318 * density tape size 319 * 9-track 1600 bpi (160 bytes/.1") 2300 ft. 320 * 9-track 6250 bpi (625 bytes/.1") 2300 ft. 321 * cartridge 8000 bpi (800 bytes/.1") 1700 ft. 322 * (450*4 - slop) 323 */ 324 if (density == 0) 325 density = cartridge ? 100 : 160; 326 if (tsize == 0) 327 tsize = cartridge ? 1700L*120L : 2300L*120L; 328 } 329 330 if (strchr(tape, ':')) { 331 host = tape; 332 tape = strchr(host, ':'); 333 *tape++ = '\0'; 334 #ifdef RDUMP 335 if (rmthost(host) == 0) 336 exit(X_STARTUP); 337 #else 338 (void)fprintf(stderr, "remote dump not enabled\n"); 339 exit(X_STARTUP); 340 #endif 341 } 342 343 if (signal(SIGHUP, SIG_IGN) != SIG_IGN) 344 signal(SIGHUP, sig); 345 if (signal(SIGTERM, SIG_IGN) != SIG_IGN) 346 signal(SIGTERM, sig); 347 if (signal(SIGINT, interrupt) == SIG_IGN) 348 signal(SIGINT, SIG_IGN); 349 350 getfstab(); /* /etc/fstab snarfed */ 351 352 /* 353 * disk can be either the full special file name, 354 * the suffix of the special file name, 355 * the special name missing the leading '/', 356 * the file system name with or without the leading '/'. 357 */ 358 if (!statfs(disk, &fsbuf) && !strcmp(fsbuf.f_mntonname, disk)) { 359 /* mounted disk? */ 360 disk = rawname(fsbuf.f_mntfromname); 361 if (!disk) { 362 (void)fprintf(stderr, "cannot get raw name for %s\n", 363 fsbuf.f_mntfromname); 364 exit(X_STARTUP); 365 } 366 mount_point = fsbuf.f_mntonname; 367 (void)strlcpy(spcl.c_dev, fsbuf.f_mntfromname, 368 sizeof(spcl.c_dev)); 369 if (dirlist != 0) { 370 (void)snprintf(spcl.c_filesys, sizeof(spcl.c_filesys), 371 "a subset of %s", mount_point); 372 } else { 373 (void)strlcpy(spcl.c_filesys, mount_point, 374 sizeof(spcl.c_filesys)); 375 } 376 } else if ((dt = fstabsearch(disk)) != NULL) { 377 /* in fstab? */ 378 if (strchr(dt->fs_spec, '/')) { 379 /* fs_spec is a /dev/something */ 380 disk = rawname(dt->fs_spec); 381 } else { 382 /* fs_spec is a DUID */ 383 disk = rawname(disk); 384 } 385 mount_point = dt->fs_file; 386 (void)strlcpy(spcl.c_dev, dt->fs_spec, sizeof(spcl.c_dev)); 387 if (dirlist != 0) { 388 (void)snprintf(spcl.c_filesys, sizeof(spcl.c_filesys), 389 "a subset of %s", mount_point); 390 } else { 391 (void)strlcpy(spcl.c_filesys, mount_point, 392 sizeof(spcl.c_filesys)); 393 } 394 } else { 395 /* must be a device */ 396 (void)strlcpy(spcl.c_dev, disk, sizeof(spcl.c_dev)); 397 (void)strlcpy(spcl.c_filesys, "an unlisted file system", 398 sizeof(spcl.c_filesys)); 399 } 400 (void)strlcpy(spcl.c_label, "none", sizeof(spcl.c_label)); 401 (void)gethostname(spcl.c_host, sizeof(spcl.c_host)); 402 spcl.c_level = level - '0'; 403 spcl.c_type = TS_TAPE; 404 405 if ((diskfd = open(disk, O_RDONLY)) == -1) { 406 msg("Cannot open %s\n", disk); 407 exit(X_STARTUP); 408 } 409 if (ioctl(diskfd, DIOCGDINFO, (char *)&lab) == -1) 410 err(1, "ioctl (DIOCGDINFO)"); 411 412 if (memcmp(lab.d_uid, &zero_uid, sizeof(lab.d_uid)) != 0) { 413 if (asprintf(&duid, 414 "%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx.%c", 415 lab.d_uid[0], lab.d_uid[1], lab.d_uid[2], lab.d_uid[3], 416 lab.d_uid[4], lab.d_uid[5], lab.d_uid[6], lab.d_uid[7], 417 disk[strlen(disk)-1]) == -1) { 418 msg("Cannot malloc duid\n"); 419 exit(X_STARTUP); 420 } 421 } 422 if (!Tflag) 423 getdumptime(); /* /etc/dumpdates snarfed */ 424 425 t = (time_t)spcl.c_date; 426 msg("Date of this level %c dump: %s", level, 427 t == 0 ? "the epoch\n" : ctime(&t)); 428 t = (time_t)spcl.c_ddate; 429 msg("Date of last level %c dump: %s", lastlevel, 430 t == 0 ? "the epoch\n" : ctime(&t)); 431 msg("Dumping %s ", disk); 432 if (mount_point != NULL) 433 msgtail("(%s) ", mount_point); 434 if (host) 435 msgtail("to %s on host %s\n", tape, host); 436 else 437 msgtail("to %s\n", tape); 438 439 if (ioctl(diskfd, DIOCGPDINFO, (char *)&lab) == -1) 440 err(1, "ioctl (DIOCGPDINFO)"); 441 sync(); 442 sblock = (struct fs *)sblock_buf; 443 for (i = 0; sblock_try[i] != -1; i++) { 444 ssize_t n = pread(diskfd, sblock, SBLOCKSIZE, 445 (off_t)sblock_try[i]); 446 if (n == SBLOCKSIZE && (sblock->fs_magic == FS_UFS1_MAGIC || 447 (sblock->fs_magic == FS_UFS2_MAGIC && 448 sblock->fs_sblockloc == sblock_try[i])) && 449 sblock->fs_bsize <= MAXBSIZE && 450 sblock->fs_bsize >= sizeof(struct fs)) 451 break; 452 } 453 if (sblock_try[i] == -1) 454 quit("Cannot find filesystem superblock\n"); 455 tp_bshift = ffs(TP_BSIZE) - 1; 456 if (TP_BSIZE != (1 << tp_bshift)) 457 quit("TP_BSIZE (%d) is not a power of 2\n", TP_BSIZE); 458 #ifdef FS_44INODEFMT 459 if (sblock->fs_magic == FS_UFS2_MAGIC || 460 sblock->fs_inodefmt >= FS_44INODEFMT) 461 spcl.c_flags |= DR_NEWINODEFMT; 462 #endif 463 maxino = (ino_t)sblock->fs_ipg * sblock->fs_ncg; 464 mapsize = roundup(howmany(maxino, NBBY), TP_BSIZE); 465 usedinomap = calloc((unsigned) mapsize, sizeof(char)); 466 dumpdirmap = calloc((unsigned) mapsize, sizeof(char)); 467 dumpinomap = calloc((unsigned) mapsize, sizeof(char)); 468 tapesize = 3 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1); 469 470 nonodump = spcl.c_level < honorlevel; 471 472 (void)signal(SIGINFO, statussig); 473 474 msg("mapping (Pass I) [regular files]\n"); 475 anydirskipped = mapfiles(maxino, &tapesize, toplevel, 476 (dirlist ? argv : NULL)); 477 478 msg("mapping (Pass II) [directories]\n"); 479 while (anydirskipped) { 480 anydirskipped = mapdirs(maxino, &tapesize); 481 } 482 483 if (pipeout || unlimited) { 484 tapesize += 10; /* 10 trailer blocks */ 485 msg("estimated %lld tape blocks.\n", tapesize); 486 } else { 487 double fetapes; 488 489 if (blocksperfile) 490 fetapes = (double) tapesize / blocksperfile; 491 else if (cartridge) { 492 /* Estimate number of tapes, assuming streaming stops at 493 the end of each block written, and not in mid-block. 494 Assume no erroneous blocks; this can be compensated 495 for with an artificially low tape size. */ 496 fetapes = 497 ( tapesize /* blocks */ 498 * TP_BSIZE /* bytes/block */ 499 * (1.0/density) /* 0.1" / byte */ 500 + 501 tapesize /* blocks */ 502 * (1.0/ntrec) /* streaming-stops per block */ 503 * 15.48 /* 0.1" / streaming-stop */ 504 ) * (1.0 / tsize ); /* tape / 0.1" */ 505 } else { 506 /* Estimate number of tapes, for old fashioned 9-track 507 tape */ 508 int tenthsperirg = (density == 625) ? 3 : 7; 509 fetapes = 510 ( tapesize /* blocks */ 511 * TP_BSIZE /* bytes / block */ 512 * (1.0/density) /* 0.1" / byte */ 513 + 514 tapesize /* blocks */ 515 * (1.0/ntrec) /* IRG's / block */ 516 * tenthsperirg /* 0.1" / IRG */ 517 ) * (1.0 / tsize ); /* tape / 0.1" */ 518 } 519 etapes = fetapes; /* truncating assignment */ 520 etapes++; 521 /* count the dumped inodes map on each additional tape */ 522 tapesize += (etapes - 1) * 523 (howmany(mapsize * sizeof(char), TP_BSIZE) + 1); 524 tapesize += etapes + 10; /* headers + 10 trailer blks */ 525 msg("estimated %lld tape blocks on %3.2f tape(s).\n", 526 tapesize, fetapes); 527 } 528 529 /* 530 * Exit if user wants an estimate of blocks and # of tapes only. 531 */ 532 if (just_estimate) 533 exit(X_FINOK); 534 535 /* 536 * Allocate tape buffer. 537 */ 538 if (!alloctape()) 539 quit("can't allocate tape buffers - try a smaller blocking factor.\n"); 540 541 startnewtape(1); 542 (void)time(&tstart_writing); 543 xferrate = 0; 544 dumpmap(usedinomap, TS_CLRI, maxino - 1); 545 546 msg("dumping (Pass III) [directories]\n"); 547 dirty = 0; /* XXX just to get gcc to shut up */ 548 for (map = dumpdirmap, ino = 1; ino < maxino; ino++) { 549 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */ 550 dirty = *map++; 551 else 552 dirty >>= 1; 553 if ((dirty & 1) == 0) 554 continue; 555 /* 556 * Skip directory inodes deleted and maybe reallocated 557 */ 558 dp = getino(ino, &mode); 559 if (mode != IFDIR) 560 continue; 561 (void)dumpino(dp, ino); 562 } 563 564 msg("dumping (Pass IV) [regular files]\n"); 565 for (map = dumpinomap, ino = 1; ino < maxino; ino++) { 566 if (((ino - 1) % NBBY) == 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 = getino(ino, &mode); 576 if (mode == IFDIR) 577 continue; 578 (void)dumpino(dp, ino); 579 } 580 581 spcl.c_type = TS_END; 582 for (i = 0; i < ntrec; i++) 583 writeheader(maxino - 1); 584 if (pipeout) 585 msg("%lld tape blocks\n", spcl.c_tapea); 586 else 587 msg("%lld tape blocks on %d volume%s\n", 588 spcl.c_tapea, spcl.c_volume, 589 (spcl.c_volume == 1) ? "" : "s"); 590 t = (time_t)spcl.c_date; 591 msg("Date of this level %c dump: %s", level, 592 t == 0 ? "the epoch\n" : ctime(&t)); 593 t = do_stats(); 594 msg("Date this dump completed: %s", ctime(&t)); 595 msg("Average transfer rate: %ld KB/s\n", xferrate / tapeno); 596 putdumptime(); 597 trewind(); 598 broadcast("DUMP IS DONE!\7\7\n"); 599 msg("DUMP IS DONE\n"); 600 Exit(X_FINOK); 601 /* NOTREACHED */ 602 } 603 604 static void 605 usage(void) 606 { 607 extern char *__progname; 608 609 (void)fprintf(stderr, "usage: %s [-0123456789acnSuWw] [-B records] " 610 "[-b blocksize] [-d density]\n" 611 "\t[-f file] [-h level] [-s feet] " 612 "[-T date] files-to-dump\n", 613 __progname); 614 exit(X_STARTUP); 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 long 622 numarg(char *meaning, long long vmin, long long vmax) 623 { 624 long long val; 625 const char *errstr; 626 627 if (vmax == 0) 628 vmax = LLONG_MAX; 629 val = strtonum(optarg, vmin, vmax, &errstr); 630 if (errstr) 631 errx(X_STARTUP, "%s is %s [%lld - %lld]", 632 meaning, errstr, vmin, vmax); 633 634 return (val); 635 } 636 637 void 638 sig(int signo) 639 { 640 switch(signo) { 641 case SIGALRM: 642 case SIGHUP: 643 case SIGTERM: 644 /* XXX signal race */ 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 } 654 } 655 656 char * 657 rawname(char *cp) 658 { 659 static char rawbuf[PATH_MAX]; 660 char *dp = strrchr(cp, '/'); 661 char *prefix; 662 663 if (dp == NULL) 664 return (NULL); 665 prefix = dp[1] == 'r' ? "" : "r"; 666 *dp = '\0'; 667 (void)snprintf(rawbuf, sizeof(rawbuf), "%s/%s%s", cp, prefix, dp + 1); 668 *dp = '/'; 669 return (rawbuf); 670 } 671 672 char * 673 getduid(char *path) 674 { 675 int fd; 676 struct disklabel lab; 677 u_int64_t zero_uid = 0; 678 char *duid; 679 680 if ((fd = opendev(path, O_RDONLY | O_NOFOLLOW, 0, NULL)) >= 0) { 681 if (ioctl(fd, DIOCGDINFO, (char *)&lab) == -1) { 682 close(fd); 683 warn("ioctl(DIOCGDINFO)"); 684 return (NULL); 685 } 686 close(fd); 687 688 if (memcmp(lab.d_uid, &zero_uid, sizeof(lab.d_uid)) != 0) { 689 if (asprintf(&duid, 690 "%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx.%c", 691 lab.d_uid[0], lab.d_uid[1], lab.d_uid[2], 692 lab.d_uid[3], lab.d_uid[4], lab.d_uid[5], 693 lab.d_uid[6], lab.d_uid[7], 694 path[strlen(path)-1]) == -1) { 695 warn("Cannot malloc duid"); 696 return (NULL); 697 } 698 return (duid); 699 } 700 } 701 702 return (NULL); 703 } 704 705 /* 706 * obsolete -- 707 * Change set of key letters and ordered arguments into something 708 * getopt(3) will like. 709 */ 710 static void 711 obsolete(int *argcp, char **argvp[]) 712 { 713 int argc, flags; 714 char *ap, **argv, *flagsp, **nargv, *p; 715 size_t len; 716 717 /* Setup. */ 718 argv = *argvp; 719 argc = *argcp; 720 721 /* Return if no arguments or first argument has leading dash. */ 722 ap = argv[1]; 723 if (argc == 1 || *ap == '-') 724 return; 725 726 /* Allocate space for new arguments. */ 727 if ((*argvp = nargv = calloc(argc + 1, sizeof(char *))) == NULL || 728 (p = flagsp = malloc(strlen(ap) + 2)) == NULL) 729 err(1, NULL); 730 731 *nargv++ = *argv; 732 argv += 2; 733 734 for (flags = 0; *ap; ++ap) { 735 switch (*ap) { 736 case 'B': 737 case 'b': 738 case 'd': 739 case 'f': 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 len = 2 + strlen(*argv) + 1; 748 if ((nargv[0] = malloc(len)) == NULL) 749 err(1, NULL); 750 nargv[0][0] = '-'; 751 nargv[0][1] = *ap; 752 (void)strlcpy(&nargv[0][2], *argv, len - 2); 753 ++argv; 754 ++nargv; 755 break; 756 default: 757 if (!flags) { 758 *p++ = '-'; 759 flags = 1; 760 } 761 *p++ = *ap; 762 break; 763 } 764 } 765 766 /* Terminate flags, or toss the buffer we did not use. */ 767 if (flags) { 768 *p = '\0'; 769 *nargv++ = flagsp; 770 } else 771 free(flagsp); 772 773 /* Copy remaining arguments. */ 774 while ((*nargv++ = *argv++)) 775 continue; 776 777 /* Update argument count. */ 778 *argcp = nargv - *argvp - 1; 779 } 780