main.c revision 1.36
1 /* $NetBSD: main.c,v 1.36 2001/07/17 10:56:53 mrg 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 __COPYRIGHT("@(#) Copyright (c) 1980, 1991, 1993, 1994\n\ 39 The Regents of the University of California. All rights reserved.\n"); 40 #endif /* not lint */ 41 42 #ifndef lint 43 #if 0 44 static char sccsid[] = "@(#)main.c 8.6 (Berkeley) 5/1/95"; 45 #else 46 __RCSID("$NetBSD: main.c,v 1.36 2001/07/17 10:56:53 mrg Exp $"); 47 #endif 48 #endif /* not lint */ 49 50 #include <sys/param.h> 51 #include <sys/time.h> 52 #include <sys/stat.h> 53 #include <sys/mount.h> 54 55 #ifdef sunos 56 #include <sys/vnode.h> 57 58 #include <ufs/inode.h> 59 #include <ufs/fs.h> 60 #else 61 #include <ufs/ufs/dinode.h> 62 #include <ufs/ffs/fs.h> 63 #include <ufs/ffs/ffs_extern.h> 64 #endif 65 66 #include <protocols/dumprestore.h> 67 68 #include <ctype.h> 69 #include <err.h> 70 #include <errno.h> 71 #include <fcntl.h> 72 #include <fstab.h> 73 #include <signal.h> 74 #include <stdio.h> 75 #include <stdlib.h> 76 #include <string.h> 77 #include <time.h> 78 #include <unistd.h> 79 80 #include "dump.h" 81 #include "pathnames.h" 82 83 int notify; /* notify operator flag */ 84 int blockswritten; /* number of blocks written on current tape */ 85 int tapeno; /* current tape number */ 86 int density; /* density in bytes/0.1" */ 87 int ntrec = NTREC; /* # tape blocks in each tape record */ 88 int cartridge; /* Assume non-cartridge tape */ 89 long dev_bsize = 1; /* recalculated below */ 90 long blocksperfile; /* output blocks per file */ 91 char *host; /* remote host (if any) */ 92 int readcache = -1; /* read cache size (in readblksize blks) */ 93 int readblksize = 32 * 1024; /* read block size */ 94 95 int main(int, char *[]); 96 static long numarg(char *, long, long); 97 static void obsolete(int *, char **[]); 98 static void usage(void); 99 100 int 101 main(int argc, char *argv[]) 102 { 103 ino_t ino; 104 int dirty; 105 struct dinode *dp; 106 struct fstab *dt; 107 struct statfs *mntinfo, fsbuf; 108 char *map; 109 int ch; 110 int i, anydirskipped, bflag = 0, Tflag = 0, honorlevel = 1; 111 ino_t maxino; 112 time_t tnow, date; 113 int dirc; 114 char *mountpoint; 115 int just_estimate = 0; 116 char labelstr[LBLSIZE]; 117 118 spcl.c_date = 0; 119 (void)time((time_t *)&spcl.c_date); 120 121 tsize = 0; /* Default later, based on 'c' option for cart tapes */ 122 if ((tape = getenv("TAPE")) == NULL) 123 tape = _PATH_DEFTAPE; 124 dumpdates = _PATH_DUMPDATES; 125 temp = _PATH_DTMP; 126 strcpy(labelstr, "none"); /* XXX safe strcpy. */ 127 if (TP_BSIZE / DEV_BSIZE == 0 || TP_BSIZE % DEV_BSIZE != 0) 128 quit("TP_BSIZE must be a multiple of DEV_BSIZE\n"); 129 level = '0'; 130 131 if (argc < 2) 132 usage(); 133 134 obsolete(&argc, &argv); 135 while ((ch = getopt(argc, argv, 136 "0123456789B:b:cd:ef:h:k:L:nr:s:ST:uWw")) != -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 'B': /* blocks per output file */ 145 blocksperfile = numarg("blocks per file", 1L, 0L); 146 break; 147 148 case 'b': /* blocks per tape write */ 149 ntrec = numarg("blocks per write", 1L, 1000L); 150 bflag = 1; 151 break; 152 153 case 'c': /* Tape is cart. not 9-track */ 154 cartridge = 1; 155 break; 156 157 case 'd': /* density, in bits per inch */ 158 density = numarg("density", 10L, 327670L) / 10; 159 if (density >= 625 && !bflag) 160 ntrec = HIGHDENSITYTREC; 161 break; 162 163 case 'e': /* eject full tapes */ 164 eflag = 1; 165 break; 166 167 case 'f': /* output file */ 168 tape = optarg; 169 break; 170 171 case 'h': 172 honorlevel = numarg("honor level", 0L, 10L); 173 break; 174 175 case 'k': 176 readblksize = numarg("read block size", 0, 64) * 1024; 177 break; 178 179 case 'L': 180 /* 181 * Note that although there are LBLSIZE characters, 182 * the last must be '\0', so the limit on strlen() 183 * is really LBLSIZE-1. 184 */ 185 strncpy(labelstr, optarg, LBLSIZE); 186 labelstr[LBLSIZE-1] = '\0'; 187 if (strlen(optarg) > LBLSIZE-1) { 188 msg( 189 "WARNING Label `%s' is larger than limit of %d characters.\n", 190 optarg, LBLSIZE-1); 191 msg("WARNING: Using truncated label `%s'.\n", 192 labelstr); 193 } 194 break; 195 case 'n': /* notify operators */ 196 notify = 1; 197 break; 198 199 case 'r': /* read cache size */ 200 readcache = numarg("read cache size", 0, 512); 201 break; 202 203 case 's': /* tape size, feet */ 204 tsize = numarg("tape size", 1L, 0L) * 12 * 10; 205 break; 206 207 case 'S': /* exit after estimating # of tapes */ 208 just_estimate = 1; 209 break; 210 211 case 'T': /* time of last dump */ 212 spcl.c_ddate = unctime(optarg); 213 if (spcl.c_ddate < 0) { 214 (void)fprintf(stderr, "bad time \"%s\"\n", 215 optarg); 216 exit(X_ABORT); 217 } 218 Tflag = 1; 219 lastlevel = '?'; 220 break; 221 222 case 'u': /* update /etc/dumpdates */ 223 uflag = 1; 224 break; 225 226 case 'W': /* what to do */ 227 case 'w': 228 lastdump(ch); 229 exit(0); /* do nothing else */ 230 231 default: 232 usage(); 233 } 234 argc -= optind; 235 argv += optind; 236 237 if (argc < 1) { 238 (void)fprintf(stderr, "Must specify disk or filesystem\n"); 239 exit(X_ABORT); 240 } 241 242 243 /* 244 * determine if disk is a subdirectory, and setup appropriately 245 */ 246 getfstab(); /* /etc/fstab snarfed */ 247 disk = NULL; 248 mountpoint = NULL; 249 dirc = 0; 250 for (i = 0; i < argc; i++) { 251 struct stat sb; 252 253 if (lstat(argv[i], &sb) == -1) 254 quit("Cannot stat %s: %s\n", argv[i], strerror(errno)); 255 if (S_ISCHR(sb.st_mode) || S_ISBLK(sb.st_mode)) { 256 disk = argv[i]; 257 multicheck: 258 if (dirc != 0) 259 quit( 260 "Can't dump a mountpoint and a filelist\n"); 261 break; 262 } 263 if ((dt = fstabsearch(argv[i])) != NULL) { 264 disk = dt->fs_spec; 265 mountpoint = xstrdup(dt->fs_file); 266 goto multicheck; 267 } 268 if (statfs(argv[i], &fsbuf) == -1) 269 quit("Cannot statfs %s: %s\n", argv[i], 270 strerror(errno)); 271 disk = fsbuf.f_mntfromname; 272 if (strcmp(argv[i], fsbuf.f_mntonname) == 0) 273 goto multicheck; 274 if (mountpoint == NULL) { 275 mountpoint = xstrdup(fsbuf.f_mntonname); 276 if (uflag) { 277 msg("Ignoring u flag for subdir dump\n"); 278 uflag = 0; 279 } 280 if (level > '0') { 281 msg("Subdir dump is done at level 0\n"); 282 level = '0'; 283 } 284 msg("Dumping sub files/directories from %s\n", 285 mountpoint); 286 } else { 287 if (strcmp(mountpoint, fsbuf.f_mntonname) != 0) 288 quit("%s is not on %s\n", argv[i], mountpoint); 289 } 290 msg("Dumping file/directory %s\n", argv[i]); 291 dirc++; 292 } 293 if (mountpoint) 294 free(mountpoint); 295 296 if (dirc == 0) { 297 argv++; 298 if (argc != 1) { 299 (void)fprintf(stderr, "Excess arguments to dump:"); 300 while (--argc) 301 (void)fprintf(stderr, " %s", *argv++); 302 (void)fprintf(stderr, "\n"); 303 exit(X_ABORT); 304 } 305 } 306 if (Tflag && uflag) { 307 (void)fprintf(stderr, 308 "You cannot use the T and u flags together.\n"); 309 exit(X_ABORT); 310 } 311 if (strcmp(tape, "-") == 0) { 312 pipeout++; 313 tape = "standard output"; 314 } 315 316 if (blocksperfile) 317 blocksperfile = blocksperfile / ntrec * ntrec; /* round down */ 318 else { 319 /* 320 * Determine how to default tape size and density 321 * 322 * density tape size 323 * 9-track 1600 bpi (160 bytes/.1") 2300 ft. 324 * 9-track 6250 bpi (625 bytes/.1") 2300 ft. 325 * cartridge 8000 bpi (100 bytes/.1") 1700 ft. 326 * (450*4 - slop) 327 */ 328 if (density == 0) 329 density = cartridge ? 100 : 160; 330 if (tsize == 0) 331 tsize = cartridge ? 1700L*120L : 2300L*120L; 332 } 333 334 if (strchr(tape, ':')) { 335 host = tape; 336 tape = strchr(host, ':'); 337 *tape++ = '\0'; 338 #ifdef RDUMP 339 { 340 gid_t gid, egid; 341 uid_t uid, euid; 342 343 gid = getgid(); 344 egid = getegid(); 345 uid = getuid(); 346 euid = geteuid(); 347 348 if (gid != egid) 349 setegid(gid); 350 if (uid != euid) 351 seteuid(uid); 352 353 if (rmthost(host) == 0) 354 exit(X_ABORT); 355 356 if (gid != egid) 357 setegid(egid); 358 if (uid != euid) 359 seteuid(euid); 360 } 361 #else 362 (void)fprintf(stderr, "remote dump not enabled\n"); 363 exit(X_ABORT); 364 #endif 365 } 366 367 if (signal(SIGHUP, SIG_IGN) != SIG_IGN) 368 signal(SIGHUP, sig); 369 if (signal(SIGTRAP, SIG_IGN) != SIG_IGN) 370 signal(SIGTRAP, sig); 371 if (signal(SIGFPE, SIG_IGN) != SIG_IGN) 372 signal(SIGFPE, sig); 373 if (signal(SIGBUS, SIG_IGN) != SIG_IGN) 374 signal(SIGBUS, sig); 375 if (signal(SIGSEGV, SIG_IGN) != SIG_IGN) 376 signal(SIGSEGV, sig); 377 if (signal(SIGTERM, SIG_IGN) != SIG_IGN) 378 signal(SIGTERM, sig); 379 if (signal(SIGINT, interrupt) == SIG_IGN) 380 signal(SIGINT, SIG_IGN); 381 382 set_operators(); /* /etc/group snarfed */ 383 384 /* 385 * disk can be either the full special file name, or 386 * the file system name. 387 */ 388 mountpoint = NULL; 389 if ((dt = fstabsearch(disk)) != NULL) { 390 disk = rawname(dt->fs_spec); 391 mountpoint = dt->fs_file; 392 msg("Found %s on %s in %s\n", disk, mountpoint, _PATH_FSTAB); 393 } else if ((mntinfo = mntinfosearch(disk)) != NULL) { 394 disk = rawname(mntinfo->f_mntfromname); 395 mountpoint = mntinfo->f_mntonname; 396 msg("Found %s on %s in mount table\n", disk, mountpoint); 397 } 398 if (mountpoint != NULL) { 399 if (dirc != 0) 400 (void)snprintf(spcl.c_filesys, NAMELEN, 401 "a subset of %s", mountpoint); 402 else 403 (void)strncpy(spcl.c_filesys, mountpoint, NAMELEN); 404 } else { 405 (void)strncpy(spcl.c_filesys, "an unlisted file system", 406 NAMELEN); 407 } 408 (void)strncpy(spcl.c_dev, disk, NAMELEN); 409 (void)strncpy(spcl.c_label, labelstr, sizeof(spcl.c_label) - 1); 410 (void)gethostname(spcl.c_host, NAMELEN); 411 spcl.c_host[sizeof(spcl.c_host) - 1] = '\0'; 412 413 if ((diskfd = open(disk, O_RDONLY)) < 0) { 414 msg("Cannot open %s\n", disk); 415 exit(X_ABORT); 416 } 417 sync(); 418 419 needswap = fs_read_sblock(sblock_buf); 420 421 spcl.c_level = iswap32(level - '0'); 422 spcl.c_type = iswap32(TS_TAPE); 423 spcl.c_date = iswap32(spcl.c_date); 424 spcl.c_ddate = iswap32(spcl.c_ddate); 425 if (!Tflag) 426 getdumptime(); /* /etc/dumpdates snarfed */ 427 428 date = iswap32(spcl.c_date); 429 msg("Date of this level %c dump: %s", level, 430 spcl.c_date == 0 ? "the epoch\n" : ctime(&date)); 431 date = iswap32(spcl.c_ddate); 432 msg("Date of last level %c dump: %s", lastlevel, 433 spcl.c_ddate == 0 ? "the epoch\n" : ctime(&date)); 434 msg("Dumping "); 435 if (dirc != 0) 436 msgtail("a subset of "); 437 msgtail("%s (%s) ", disk, spcl.c_filesys); 438 if (host) 439 msgtail("to %s on host %s\n", tape, host); 440 else 441 msgtail("to %s\n", tape); 442 msg("Label: %s\n", labelstr); 443 444 ufsib = fs_parametrize(); 445 446 dev_bshift = ffs(dev_bsize) - 1; 447 if (dev_bsize != (1 << dev_bshift)) 448 quit("dev_bsize (%ld) is not a power of 2", dev_bsize); 449 tp_bshift = ffs(TP_BSIZE) - 1; 450 if (TP_BSIZE != (1 << tp_bshift)) 451 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE); 452 maxino = fs_maxino(); 453 mapsize = roundup(howmany(maxino, NBBY), TP_BSIZE); 454 usedinomap = (char *)xcalloc((unsigned) mapsize, sizeof(char)); 455 dumpdirmap = (char *)xcalloc((unsigned) mapsize, sizeof(char)); 456 dumpinomap = (char *)xcalloc((unsigned) mapsize, sizeof(char)); 457 tapesize = 3 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1); 458 459 nonodump = iswap32(spcl.c_level) < honorlevel; 460 461 initcache(readcache, readblksize); 462 463 (void)signal(SIGINFO, statussig); 464 465 msg("mapping (Pass I) [regular files]\n"); 466 anydirskipped = mapfiles(maxino, &tapesize, mountpoint, 467 (dirc ? argv : NULL)); 468 469 msg("mapping (Pass II) [directories]\n"); 470 while (anydirskipped) { 471 anydirskipped = mapdirs(maxino, &tapesize); 472 } 473 474 if (pipeout) { 475 tapesize += 10; /* 10 trailer blocks */ 476 msg("estimated %ld tape blocks.\n", tapesize); 477 } else { 478 double fetapes; 479 480 if (blocksperfile) 481 fetapes = (double) tapesize / blocksperfile; 482 else if (cartridge) { 483 /* Estimate number of tapes, assuming streaming stops at 484 the end of each block written, and not in mid-block. 485 Assume no erroneous blocks; this can be compensated 486 for with an artificially low tape size. */ 487 fetapes = 488 ( tapesize /* blocks */ 489 * TP_BSIZE /* bytes/block */ 490 * (1.0/density) /* 0.1" / byte */ 491 + 492 tapesize /* blocks */ 493 * (1.0/ntrec) /* streaming-stops per block */ 494 * 15.48 /* 0.1" / streaming-stop */ 495 ) * (1.0 / tsize ); /* tape / 0.1" */ 496 } else { 497 /* Estimate number of tapes, for old fashioned 9-track 498 tape */ 499 int tenthsperirg = (density == 625) ? 3 : 7; 500 fetapes = 501 ( tapesize /* blocks */ 502 * TP_BSIZE /* bytes / block */ 503 * (1.0/density) /* 0.1" / byte */ 504 + 505 tapesize /* blocks */ 506 * (1.0/ntrec) /* IRG's / block */ 507 * tenthsperirg /* 0.1" / IRG */ 508 ) * (1.0 / tsize ); /* tape / 0.1" */ 509 } 510 etapes = fetapes; /* truncating assignment */ 511 etapes++; 512 /* count the dumped inodes map on each additional tape */ 513 tapesize += (etapes - 1) * 514 (howmany(mapsize * sizeof(char), TP_BSIZE) + 1); 515 tapesize += etapes + 10; /* headers + 10 trailer blks */ 516 msg("estimated %ld tape blocks on %3.2f tape(s).\n", 517 tapesize, fetapes); 518 } 519 /* 520 * If the user only wants an estimate of the number of 521 * tapes, exit now. 522 */ 523 if (just_estimate) 524 exit(0); 525 526 /* 527 * Allocate tape buffer. 528 */ 529 if (!alloctape()) 530 quit("can't allocate tape buffers - try a smaller blocking factor.\n"); 531 532 startnewtape(1); 533 (void)time((time_t *)&(tstart_writing)); 534 xferrate = 0; 535 dumpmap(usedinomap, TS_CLRI, maxino - 1); 536 537 msg("dumping (Pass III) [directories]\n"); 538 dirty = 0; /* XXX just to get gcc to shut up */ 539 for (map = dumpdirmap, ino = 1; ino < maxino; ino++) { 540 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */ 541 dirty = *map++; 542 else 543 dirty >>= 1; 544 if ((dirty & 1) == 0) 545 continue; 546 /* 547 * Skip directory inodes deleted and maybe reallocated 548 */ 549 dp = getino(ino); 550 if ((dp->di_mode & IFMT) != IFDIR) 551 continue; 552 (void)dumpino(dp, ino); 553 } 554 555 msg("dumping (Pass IV) [regular files]\n"); 556 for (map = dumpinomap, ino = 1; ino < maxino; ino++) { 557 int mode; 558 559 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */ 560 dirty = *map++; 561 else 562 dirty >>= 1; 563 if ((dirty & 1) == 0) 564 continue; 565 /* 566 * Skip inodes deleted and reallocated as directories. 567 */ 568 dp = getino(ino); 569 mode = dp->di_mode & IFMT; 570 if (mode == IFDIR) 571 continue; 572 (void)dumpino(dp, ino); 573 } 574 575 spcl.c_type = iswap32(TS_END); 576 for (i = 0; i < ntrec; i++) 577 writeheader(maxino - 1); 578 if (pipeout) 579 msg("%d tape blocks\n",iswap32(spcl.c_tapea)); 580 else 581 msg("%d tape blocks on %d volume%s\n", 582 iswap32(spcl.c_tapea), iswap32(spcl.c_volume), 583 (iswap32(spcl.c_volume) == 1) ? "" : "s"); 584 tnow = do_stats(); 585 date = iswap32(spcl.c_date); 586 msg("Date of this level %c dump: %s", level, 587 spcl.c_date == 0 ? "the epoch\n" : ctime(&date)); 588 msg("Date this dump completed: %s", ctime(&tnow)); 589 msg("Average transfer rate: %d KB/s\n", xferrate / tapeno); 590 putdumptime(); 591 trewind(0); 592 broadcast("DUMP IS DONE!\7\7\n"); 593 msg("DUMP IS DONE\n"); 594 Exit(X_FINOK); 595 /* NOTREACHED */ 596 exit(X_FINOK); /* XXX: to satisfy gcc */ 597 } 598 599 static void 600 usage(void) 601 { 602 603 (void)fprintf(stderr, "%s\n%s\n%s\n%s\n", 604 "usage: dump [-0123456789cenu] [-B records] [-b blocksize] [-d density]", 605 " [-f file] [-h level] [-k read block size] [-L label]", 606 " [-r read cache size] [-s feet] [-T date] filesystem", 607 " dump [-W | -w]"); 608 exit(1); 609 } 610 611 /* 612 * Pick up a numeric argument. It must be nonnegative and in the given 613 * range (except that a vmax of 0 means unlimited). 614 */ 615 static long 616 numarg(char *meaning, long vmin, long vmax) 617 { 618 char *p; 619 long val; 620 621 val = strtol(optarg, &p, 10); 622 if (*p) 623 errx(1, "illegal %s -- %s", meaning, optarg); 624 if (val < vmin || (vmax && val > vmax)) 625 errx(1, "%s must be between %ld and %ld", meaning, vmin, vmax); 626 return (val); 627 } 628 629 void 630 sig(int signo) 631 { 632 633 switch(signo) { 634 case SIGALRM: 635 case SIGBUS: 636 case SIGFPE: 637 case SIGHUP: 638 case SIGTERM: 639 case SIGTRAP: 640 if (pipeout) 641 quit("Signal on pipe: cannot recover\n"); 642 msg("Rewriting attempted as response to signal %s.\n", sys_siglist[signo]); 643 (void)fflush(stderr); 644 (void)fflush(stdout); 645 close_rewind(); 646 exit(X_REWRITE); 647 /* NOTREACHED */ 648 case SIGSEGV: 649 msg("SIGSEGV: ABORTING!\n"); 650 (void)signal(SIGSEGV, SIG_DFL); 651 (void)kill(0, SIGSEGV); 652 /* NOTREACHED */ 653 } 654 } 655 656 char * 657 rawname(char *cp) 658 { 659 static char rawbuf[MAXPATHLEN]; 660 char *dp = strrchr(cp, '/'); 661 662 if (dp == NULL) 663 return (NULL); 664 *dp = '\0'; 665 (void)snprintf(rawbuf, sizeof rawbuf, "%s/r%s", cp, dp + 1); 666 *dp = '/'; 667 return (rawbuf); 668 } 669 670 /* 671 * obsolete -- 672 * Change set of key letters and ordered arguments into something 673 * getopt(3) will like. 674 */ 675 static void 676 obsolete(int *argcp, char **argvp[]) 677 { 678 int argc, flags; 679 char *ap, **argv, *flagsp, **nargv, *p; 680 681 /* Setup. */ 682 argv = *argvp; 683 argc = *argcp; 684 685 /* Return if no arguments or first argument has leading dash. */ 686 ap = argv[1]; 687 if (argc == 1 || *ap == '-') 688 return; 689 690 /* Allocate space for new arguments. */ 691 *argvp = nargv = xmalloc((argc + 1) * sizeof(char *)); 692 p = flagsp = xmalloc(strlen(ap) + 2); 693 694 *nargv++ = *argv; 695 argv += 2; 696 697 for (flags = 0; *ap; ++ap) { 698 switch (*ap) { 699 case 'B': 700 case 'b': 701 case 'd': 702 case 'f': 703 case 'h': 704 case 's': 705 case 'T': 706 if (*argv == NULL) { 707 warnx("option requires an argument -- %c", *ap); 708 usage(); 709 } 710 nargv[0] = xmalloc(strlen(*argv) + 2 + 1); 711 nargv[0][0] = '-'; 712 nargv[0][1] = *ap; 713 (void)strcpy(&nargv[0][2], *argv); /* XXX safe strcpy */ 714 ++argv; 715 ++nargv; 716 break; 717 default: 718 if (!flags) { 719 *p++ = '-'; 720 flags = 1; 721 } 722 *p++ = *ap; 723 break; 724 } 725 } 726 727 /* Terminate flags. */ 728 if (flags) { 729 *p = '\0'; 730 *nargv++ = flagsp; 731 } 732 733 /* Copy remaining arguments. */ 734 while ((*nargv++ = *argv++) != NULL) 735 ; 736 737 /* Update argument count. */ 738 *argcp = nargv - *argvp - 1; 739 } 740 741 742 void * 743 xcalloc(size_t number, size_t size) 744 { 745 void *p; 746 747 p = calloc(number, size); 748 if (p == NULL) 749 quit("%s\n", strerror(errno)); 750 return (p); 751 } 752 753 void * 754 xmalloc(size_t size) 755 { 756 void *p; 757 758 p = malloc(size); 759 if (p == NULL) 760 quit("%s\n", strerror(errno)); 761 return (p); 762 } 763 764 char * 765 xstrdup(const char *str) 766 { 767 char *p; 768 769 p = strdup(str); 770 if (p == NULL) 771 quit("%s\n", strerror(errno)); 772 return (p); 773 } 774
Indexes created Wed Oct 15 03:09:54 GMT 2025