main.c revision 1.25.6.7
1 /* $NetBSD: main.c,v 1.25.6.7 2002/01/16 10:01:37 he 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 1.25.6.7 2002/01/16 10:01:37 he 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 #include <ufs/ufs/dinode.h> 56 #include <ufs/ffs/fs.h> 57 #include <ufs/ffs/ffs_extern.h> 58 59 #include <protocols/dumprestore.h> 60 61 #include <ctype.h> 62 #include <err.h> 63 #include <errno.h> 64 #include <fcntl.h> 65 #include <fstab.h> 66 #include <signal.h> 67 #include <stdio.h> 68 #include <stdlib.h> 69 #include <string.h> 70 #include <time.h> 71 #include <unistd.h> 72 73 #include "dump.h" 74 #include "pathnames.h" 75 76 gid_t egid; /* Retain tty privs for notification */ 77 int notify = 0; /* notify operator flag */ 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" */ 81 int ntrec = NTREC; /* # tape blocks in each tape record */ 82 int cartridge = 0; /* Assume non-cartridge tape */ 83 long dev_bsize = 1; /* recalculated below */ 84 long blocksperfile = 0; /* output blocks per file */ 85 char *host = NULL; /* remote host (if any) */ 86 int readcache = -1; /* read cache size (in readblksize blks) */ 87 int readblksize = 32 * 1024; /* read block size */ 88 89 int main __P((int, char *[])); 90 static long numarg __P((char *, long, long)); 91 static void obsolete __P((int *, char **[])); 92 static void usage __P((void)); 93 94 int 95 main(argc, argv) 96 int argc; 97 char *argv[]; 98 { 99 ino_t ino; 100 int dirty; 101 struct dinode *dp; 102 struct fstab *dt; 103 char *map; 104 int ch; 105 int i, anydirskipped, bflag = 0, Tflag = 0, honorlevel = 1; 106 ino_t maxino; 107 time_t tnow, date; 108 int dirlist; 109 char *toplevel; 110 int just_estimate = 0; 111 char labelstr[LBLSIZE]; 112 113 spcl.c_date = 0; 114 (void)time(&tnow); 115 spcl.c_date = tnow; 116 117 /* Save setgid bit for use later */ 118 egid = getegid(); 119 setegid(getgid()); 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 "0123456789aB:b:cd:ef:h:k:l: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 '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': /* output file */ 172 tape = optarg; 173 break; 174 175 case 'h': 176 honorlevel = numarg("honor level", 0L, 10L); 177 break; 178 179 case 'k': 180 readblksize = numarg("read block size", 0, 64) * 1024; 181 break; 182 183 case 'l': /* autoload after eject full tapes */ 184 eflag = 1; 185 lflag = numarg("timeout (in seconds)", 1, 0); 186 break; 187 188 case 'L': 189 /* 190 * Note that although there are LBLSIZE characters, 191 * the last must be '\0', so the limit on strlen() 192 * is really LBLSIZE-1. 193 */ 194 strncpy(labelstr, optarg, LBLSIZE); 195 labelstr[LBLSIZE-1] = '\0'; 196 if (strlen(optarg) > LBLSIZE-1) { 197 msg( 198 "WARNING Label `%s' is larger than limit of %d characters.\n", 199 optarg, LBLSIZE-1); 200 msg("WARNING: Using truncated label `%s'.\n", 201 labelstr); 202 } 203 break; 204 case 'n': /* notify operators */ 205 notify = 1; 206 break; 207 208 case 'r': /* read cache size */ 209 readcache = numarg("read cache size", 0, 512); 210 break; 211 212 case 's': /* tape size, feet */ 213 tsize = numarg("tape size", 1L, 0L) * 12 * 10; 214 break; 215 216 case 'S': /* exit after estimating # of tapes */ 217 just_estimate = 1; 218 break; 219 220 case 'T': /* time of last dump */ 221 spcl.c_ddate = unctime(optarg); 222 if (spcl.c_ddate < 0) { 223 (void)fprintf(stderr, "bad time \"%s\"\n", 224 optarg); 225 exit(X_STARTUP); 226 } 227 Tflag = 1; 228 lastlevel = '?'; 229 break; 230 231 case 'u': /* update /etc/dumpdates */ 232 uflag = 1; 233 break; 234 235 case 'W': /* what to do */ 236 case 'w': 237 lastdump(ch); 238 exit(X_FINOK); /* do nothing else */ 239 240 default: 241 usage(); 242 } 243 argc -= optind; 244 argv += optind; 245 246 if (argc < 1) { 247 (void)fprintf(stderr, "Must specify disk or filesystem\n"); 248 exit(X_ABORT); 249 } 250 251 /* 252 * determine if disk is a subdirectory, and setup appropriately 253 */ 254 dirlist = 0; 255 toplevel = NULL; 256 for (i = 0; i < argc; i++) { 257 struct stat sb; 258 struct statfs fsbuf; 259 260 if (lstat(argv[i], &sb) == -1) { 261 msg("Cannot lstat %s: %s\n", argv[i], strerror(errno)); 262 exit(X_ABORT); 263 } 264 if (!S_ISDIR(sb.st_mode) && !S_ISREG(sb.st_mode)) 265 break; 266 if (statfs(argv[i], &fsbuf) == -1) { 267 msg("Cannot statfs %s: %s\n", argv[i], strerror(errno)); 268 exit(X_ABORT); 269 } 270 if (strcmp(argv[i], fsbuf.f_mntonname) == 0) { 271 if (dirlist != 0) { 272 msg("Can't dump a mountpoint and a filelist\n"); 273 exit(X_ABORT); 274 } 275 break; /* exit if sole mountpoint */ 276 } 277 if (!disk) { 278 if ((toplevel = strdup(fsbuf.f_mntonname)) == NULL) { 279 msg("Cannot malloc diskname\n"); 280 exit(X_ABORT); 281 } 282 disk = toplevel; 283 if (uflag) { 284 msg("Ignoring u flag for subdir dump\n"); 285 uflag = 0; 286 } 287 if (level > '0') { 288 msg("Subdir dump is done at level 0\n"); 289 level = '0'; 290 } 291 msg("Dumping sub files/directories from %s\n", disk); 292 } else { 293 if (strcmp(disk, fsbuf.f_mntonname) != 0) { 294 msg("%s is not on %s\n", argv[i], disk); 295 exit(X_ABORT); 296 } 297 } 298 msg("Dumping file/directory %s\n", argv[i]); 299 dirlist++; 300 } 301 if (dirlist == 0) { 302 disk = *argv++; 303 if (argc != 1) { 304 (void)fprintf(stderr, "Excess arguments to dump:"); 305 while (--argc) 306 (void)fprintf(stderr, " %s", *argv++); 307 (void)fprintf(stderr, "\n"); 308 exit(X_STARTUP); 309 } 310 } 311 if (Tflag && uflag) { 312 (void)fprintf(stderr, 313 "You cannot use the T and u flags together.\n"); 314 exit(X_STARTUP); 315 } 316 if (strcmp(tape, "-") == 0) { 317 pipeout++; 318 tape = "standard output"; 319 } 320 321 if (blocksperfile) 322 blocksperfile = blocksperfile / ntrec * ntrec; /* round down */ 323 else if (!unlimited) { 324 /* 325 * Determine how to default tape size and density 326 * 327 * density tape size 328 * 9-track 1600 bpi (160 bytes/.1") 2300 ft. 329 * 9-track 6250 bpi (625 bytes/.1") 2300 ft. 330 * cartridge 8000 bpi (100 bytes/.1") 1700 ft. 331 * (450*4 - slop) 332 */ 333 if (density == 0) 334 density = cartridge ? 100 : 160; 335 if (tsize == 0) 336 tsize = cartridge ? 1700L*120L : 2300L*120L; 337 } 338 339 if (strchr(tape, ':')) { 340 host = tape; 341 tape = strchr(host, ':'); 342 *tape++ = '\0'; 343 #ifdef RDUMP 344 if (rmthost(host) == 0) 345 exit(X_STARTUP); 346 #else 347 (void)fprintf(stderr, "remote dump not enabled\n"); 348 exit(X_STARTUP); 349 #endif 350 } 351 352 if (signal(SIGHUP, SIG_IGN) != SIG_IGN) 353 signal(SIGHUP, sig); 354 if (signal(SIGTRAP, SIG_IGN) != SIG_IGN) 355 signal(SIGTRAP, sig); 356 if (signal(SIGFPE, SIG_IGN) != SIG_IGN) 357 signal(SIGFPE, sig); 358 if (signal(SIGBUS, SIG_IGN) != SIG_IGN) 359 signal(SIGBUS, sig); 360 if (signal(SIGSEGV, SIG_IGN) != SIG_IGN) 361 signal(SIGSEGV, sig); 362 if (signal(SIGTERM, SIG_IGN) != SIG_IGN) 363 signal(SIGTERM, sig); 364 if (signal(SIGINT, interrupt) == SIG_IGN) 365 signal(SIGINT, SIG_IGN); 366 367 set_operators(); /* /etc/group snarfed */ 368 getfstab(); /* /etc/fstab snarfed */ 369 370 /* 371 * disk can be either the full special file name, 372 * the suffix of the special file name, 373 * the special name missing the leading '/', 374 * the file system name with or without the leading '/'. 375 */ 376 dt = fstabsearch(disk); 377 if (dt != NULL) { 378 disk = rawname(dt->fs_spec); 379 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN); 380 if (dirlist != 0) 381 (void)snprintf(spcl.c_filesys, NAMELEN, 382 "a subset of %s", dt->fs_file); 383 else 384 (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN); 385 } else { 386 (void)strncpy(spcl.c_dev, disk, NAMELEN); 387 (void)strncpy(spcl.c_filesys, "an unlisted file system", 388 NAMELEN); 389 } 390 (void)strncpy(spcl.c_label, labelstr, sizeof(spcl.c_label) - 1); 391 (void)gethostname(spcl.c_host, NAMELEN); 392 spcl.c_host[sizeof(spcl.c_host) - 1] = '\0'; 393 394 if ((diskfd = open(disk, O_RDONLY)) < 0) { 395 msg("Cannot open %s\n", disk); 396 exit(X_STARTUP); 397 } 398 sync(); 399 400 needswap = fs_read_sblock(sblock_buf); 401 402 spcl.c_level = iswap32(level - '0'); 403 spcl.c_type = iswap32(TS_TAPE); 404 spcl.c_date = iswap32(spcl.c_date); 405 spcl.c_ddate = iswap32(spcl.c_ddate); 406 if (!Tflag) 407 getdumptime(); /* /etc/dumpdates snarfed */ 408 409 date = iswap32(spcl.c_date); 410 msg("Date of this level %c dump: %s", level, 411 spcl.c_date == 0 ? "the epoch\n" : ctime(&date)); 412 date = iswap32(spcl.c_ddate); 413 msg("Date of last level %c dump: %s", lastlevel, 414 spcl.c_ddate == 0 ? "the epoch\n" : ctime(&date)); 415 msg("Dumping "); 416 if (dt != NULL && dirlist != 0) 417 msgtail("a subset of "); 418 msgtail("%s (%s) ", disk, spcl.c_filesys); 419 if (host) 420 msgtail("to %s on host %s\n", tape, host); 421 else 422 msgtail("to %s\n", tape); 423 msg("Label: %s\n", labelstr); 424 425 ufsib = fs_parametrize(); 426 427 dev_bshift = ffs(dev_bsize) - 1; 428 if (dev_bsize != (1 << dev_bshift)) 429 quit("dev_bsize (%ld) is not a power of 2", dev_bsize); 430 tp_bshift = ffs(TP_BSIZE) - 1; 431 if (TP_BSIZE != (1 << tp_bshift)) 432 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE); 433 maxino = fs_maxino(); 434 mapsize = roundup(howmany(maxino, NBBY), TP_BSIZE); 435 usedinomap = (char *)calloc((unsigned) mapsize, sizeof(char)); 436 dumpdirmap = (char *)calloc((unsigned) mapsize, sizeof(char)); 437 dumpinomap = (char *)calloc((unsigned) mapsize, sizeof(char)); 438 tapesize = 3 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1); 439 440 nonodump = iswap32(spcl.c_level) < honorlevel; 441 442 initcache(readcache, readblksize); 443 444 (void)signal(SIGINFO, statussig); 445 446 msg("mapping (Pass I) [regular files]\n"); 447 anydirskipped = mapfiles(maxino, &tapesize, toplevel, 448 (dirlist ? argv : NULL)); 449 450 msg("mapping (Pass II) [directories]\n"); 451 while (anydirskipped) { 452 anydirskipped = mapdirs(maxino, &tapesize); 453 } 454 455 if (pipeout || unlimited) { 456 tapesize += 10; /* 10 trailer blocks */ 457 msg("estimated %ld tape blocks.\n", tapesize); 458 } else { 459 double fetapes; 460 461 if (blocksperfile) 462 fetapes = (double) tapesize / blocksperfile; 463 else if (cartridge) { 464 /* Estimate number of tapes, assuming streaming stops at 465 the end of each block written, and not in mid-block. 466 Assume no erroneous blocks; this can be compensated 467 for with an artificially low tape size. */ 468 fetapes = 469 ( (double) tapesize /* blocks */ 470 * TP_BSIZE /* bytes/block */ 471 * (1.0/density) /* 0.1" / byte */ 472 + 473 (double) tapesize /* blocks */ 474 * (1.0/ntrec) /* streaming-stops per block */ 475 * 15.48 /* 0.1" / streaming-stop */ 476 ) * (1.0 / tsize ); /* tape / 0.1" */ 477 } else { 478 /* Estimate number of tapes, for old fashioned 9-track 479 tape */ 480 int tenthsperirg = (density == 625) ? 3 : 7; 481 fetapes = 482 ( tapesize /* blocks */ 483 * TP_BSIZE /* bytes / block */ 484 * (1.0/density) /* 0.1" / byte */ 485 + 486 tapesize /* blocks */ 487 * (1.0/ntrec) /* IRG's / block */ 488 * tenthsperirg /* 0.1" / IRG */ 489 ) * (1.0 / tsize ); /* tape / 0.1" */ 490 } 491 etapes = fetapes; /* truncating assignment */ 492 etapes++; 493 /* count the dumped inodes map on each additional tape */ 494 tapesize += (etapes - 1) * 495 (howmany(mapsize * sizeof(char), TP_BSIZE) + 1); 496 tapesize += etapes + 10; /* headers + 10 trailer blks */ 497 msg("estimated %ld tape blocks on %3.2f tape(s).\n", 498 tapesize, fetapes); 499 } 500 /* 501 * If the user only wants an estimate of the number of 502 * tapes, exit now. 503 */ 504 if (just_estimate) 505 exit(X_FINOK); 506 507 /* 508 * Allocate tape buffer. 509 */ 510 if (!alloctape()) 511 quit("can't allocate tape buffers - try a smaller blocking factor.\n"); 512 513 startnewtape(1); 514 (void)time((time_t *)&(tstart_writing)); 515 xferrate = 0; 516 dumpmap(usedinomap, TS_CLRI, maxino - 1); 517 518 msg("dumping (Pass III) [directories]\n"); 519 dirty = 0; /* XXX just to get gcc to shut up */ 520 for (map = dumpdirmap, ino = 1; ino < maxino; ino++) { 521 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */ 522 dirty = *map++; 523 else 524 dirty >>= 1; 525 if ((dirty & 1) == 0) 526 continue; 527 /* 528 * Skip directory inodes deleted and maybe reallocated 529 */ 530 dp = getino(ino); 531 if ((dp->di_mode & IFMT) != IFDIR) 532 continue; 533 (void)dumpino(dp, ino); 534 } 535 536 msg("dumping (Pass IV) [regular files]\n"); 537 for (map = dumpinomap, ino = 1; ino < maxino; ino++) { 538 int mode; 539 540 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 inodes deleted and reallocated as directories. 548 */ 549 dp = getino(ino); 550 mode = dp->di_mode & IFMT; 551 if (mode == IFDIR) 552 continue; 553 (void)dumpino(dp, ino); 554 } 555 556 spcl.c_type = iswap32(TS_END); 557 for (i = 0; i < ntrec; i++) 558 writeheader(maxino - 1); 559 if (pipeout) 560 msg("%d tape blocks\n",iswap32(spcl.c_tapea)); 561 else 562 msg("%d tape blocks on %d volume%s\n", 563 iswap32(spcl.c_tapea), iswap32(spcl.c_volume), 564 (iswap32(spcl.c_volume) == 1) ? "" : "s"); 565 tnow = do_stats(); 566 date = iswap32(spcl.c_date); 567 msg("Date of this level %c dump: %s", level, 568 spcl.c_date == 0 ? "the epoch\n" : ctime(&date)); 569 msg("Date this dump completed: %s", ctime(&tnow)); 570 msg("Average transfer rate: %d KB/s\n", xferrate / tapeno); 571 putdumptime(); 572 trewind(0); 573 broadcast("DUMP IS DONE!\a\a\n"); 574 msg("DUMP IS DONE\n"); 575 Exit(X_FINOK); 576 /* NOTREACHED */ 577 exit(X_FINOK); /* XXX: to satisfy gcc */ 578 } 579 580 static void 581 usage() 582 { 583 (void)fprintf(stderr, "%s\n%s\n%s\n%s\n", 584 "usage: dump [-0123456789acnu] [-B records] [-b blocksize] [-d density]", 585 " [-f file] [-h level] [-k read block size] [-L label]", 586 " [-l timeout] [-r read cache size] [-s feet] [-T date] filesystem", 587 " dump [-W | -w]"); 588 exit(X_STARTUP); 589 } 590 591 /* 592 * Pick up a numeric argument. It must be nonnegative and in the given 593 * range (except that a vmax of 0 means unlimited). 594 */ 595 static long 596 numarg(meaning, vmin, vmax) 597 char *meaning; 598 long vmin, vmax; 599 { 600 char *p; 601 long val; 602 603 val = strtol(optarg, &p, 10); 604 if (*p) 605 errx(X_STARTUP, "illegal %s -- %s", meaning, optarg); 606 if (val < vmin || (vmax && val > vmax)) 607 errx(X_STARTUP, "%s must be between %ld and %ld", 608 meaning, vmin, vmax); 609 return (val); 610 } 611 612 void 613 sig(signo) 614 int signo; 615 { 616 switch(signo) { 617 case SIGALRM: 618 case SIGBUS: 619 case SIGFPE: 620 case SIGHUP: 621 case SIGTERM: 622 case SIGTRAP: 623 if (pipeout) 624 quit("Signal on pipe: cannot recover\n"); 625 msg("Rewriting attempted as response to unknown signal.\n"); 626 (void)fflush(stderr); 627 (void)fflush(stdout); 628 close_rewind(); 629 exit(X_REWRITE); 630 /* NOTREACHED */ 631 case SIGSEGV: 632 msg("SIGSEGV: ABORTING!\n"); 633 (void)signal(SIGSEGV, SIG_DFL); 634 (void)kill(0, SIGSEGV); 635 /* NOTREACHED */ 636 } 637 } 638 639 char * 640 rawname(cp) 641 char *cp; 642 { 643 static char rawbuf[MAXPATHLEN]; 644 char *dp = strrchr(cp, '/'); 645 646 if (dp == NULL) 647 return (NULL); 648 *dp = '\0'; 649 (void)snprintf(rawbuf, sizeof rawbuf, "%s/r%s", cp, dp + 1); 650 *dp = '/'; 651 return (rawbuf); 652 } 653 654 /* 655 * obsolete -- 656 * Change set of key letters and ordered arguments into something 657 * getopt(3) will like. 658 */ 659 static void 660 obsolete(argcp, argvp) 661 int *argcp; 662 char **argvp[]; 663 { 664 int argc, flags; 665 char *ap, **argv, *flagsp, **nargv, *p; 666 667 /* Setup. */ 668 argv = *argvp; 669 argc = *argcp; 670 671 /* Return if no arguments or first argument has leading dash. */ 672 ap = argv[1]; 673 if (argc == 1 || *ap == '-') 674 return; 675 676 /* Allocate space for new arguments. */ 677 if ((*argvp = nargv = malloc((argc + 1) * sizeof(char *))) == NULL || 678 (p = flagsp = malloc(strlen(ap) + 2)) == NULL) 679 err(1, "malloc"); 680 681 *nargv++ = *argv; 682 argv += 2; 683 684 for (flags = 0; *ap; ++ap) { 685 switch (*ap) { 686 case 'B': 687 case 'b': 688 case 'd': 689 case 'f': 690 case 'h': 691 case 's': 692 case 'T': 693 if (*argv == NULL) { 694 warnx("option requires an argument -- %c", *ap); 695 usage(); 696 } 697 if ((nargv[0] = malloc(strlen(*argv) + 2 + 1)) == NULL) 698 err(1, "malloc"); 699 nargv[0][0] = '-'; 700 nargv[0][1] = *ap; 701 (void)strcpy(&nargv[0][2], *argv); /* XXX safe strcpy */ 702 ++argv; 703 ++nargv; 704 break; 705 default: 706 if (!flags) { 707 *p++ = '-'; 708 flags = 1; 709 } 710 *p++ = *ap; 711 break; 712 } 713 } 714 715 /* Terminate flags. */ 716 if (flags) { 717 *p = '\0'; 718 *nargv++ = flagsp; 719 } 720 721 /* Copy remaining arguments. */ 722 while ((*nargv++ = *argv++) != NULL) 723 ; 724 725 /* Update argument count. */ 726 *argcp = nargv - *argvp - 1; 727 } 728
Indexes created Wed Oct 15 16:09:53 GMT 2025