main.c revision 1.29
1 /* $NetBSD: main.c,v 1.29 2001/05/12 08:03:01 tron 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 1.29 2001/05/12 08:03:01 tron 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 __P((int, char *[])); 96 static long numarg __P((char *, long, long)); 97 static void obsolete __P((int *, char **[])); 98 static void usage __P((void)); 99 100 int 101 main(argc, argv) 102 int argc; 103 char *argv[]; 104 { 105 ino_t ino; 106 int dirty; 107 struct dinode *dp; 108 struct fstab *dt; 109 char *map; 110 int ch; 111 int i, anydirskipped, bflag = 0, Tflag = 0, honorlevel = 1; 112 ino_t maxino; 113 time_t tnow, date; 114 int dirlist; 115 char *toplevel; 116 int just_estimate = 0; 117 char labelstr[LBLSIZE]; 118 119 spcl.c_date = 0; 120 (void)time((time_t *)&spcl.c_date); 121 122 tsize = 0; /* Default later, based on 'c' option for cart tapes */ 123 if ((tape = getenv("TAPE")) == NULL) 124 tape = _PATH_DEFTAPE; 125 dumpdates = _PATH_DUMPDATES; 126 temp = _PATH_DTMP; 127 strcpy(labelstr, "none"); /* XXX safe strcpy. */ 128 if (TP_BSIZE / DEV_BSIZE == 0 || TP_BSIZE % DEV_BSIZE != 0) 129 quit("TP_BSIZE must be a multiple of DEV_BSIZE\n"); 130 level = '0'; 131 132 if (argc < 2) 133 usage(); 134 135 obsolete(&argc, &argv); 136 while ((ch = getopt(argc, argv, 137 "0123456789B:b:cd:ef:h:k:L:nr:s:ST:uWw")) != -1) 138 switch (ch) { 139 /* dump level */ 140 case '0': case '1': case '2': case '3': case '4': 141 case '5': case '6': case '7': case '8': case '9': 142 level = ch; 143 break; 144 145 case 'B': /* blocks per output file */ 146 blocksperfile = numarg("blocks per file", 1L, 0L); 147 break; 148 149 case 'b': /* blocks per tape write */ 150 ntrec = numarg("blocks per write", 1L, 1000L); 151 bflag = 1; 152 break; 153 154 case 'c': /* Tape is cart. not 9-track */ 155 cartridge = 1; 156 break; 157 158 case 'd': /* density, in bits per inch */ 159 density = numarg("density", 10L, 327670L) / 10; 160 if (density >= 625 && !bflag) 161 ntrec = HIGHDENSITYTREC; 162 break; 163 164 case 'e': /* eject full tapes */ 165 eflag = 1; 166 break; 167 168 case 'f': /* output file */ 169 tape = optarg; 170 break; 171 172 case 'h': 173 honorlevel = numarg("honor level", 0L, 10L); 174 break; 175 176 case 'k': 177 readblksize = numarg("read block size", 0, 64) * 1024; 178 break; 179 180 case 'L': 181 /* 182 * Note that although there are LBLSIZE characters, 183 * the last must be '\0', so the limit on strlen() 184 * is really LBLSIZE-1. 185 */ 186 strncpy(labelstr, optarg, LBLSIZE); 187 labelstr[LBLSIZE-1] = '\0'; 188 if (strlen(optarg) > LBLSIZE-1) { 189 msg( 190 "WARNING Label `%s' is larger than limit of %d characters.\n", 191 optarg, LBLSIZE-1); 192 msg("WARNING: Using truncated label `%s'.\n", 193 labelstr); 194 } 195 break; 196 case 'n': /* notify operators */ 197 notify = 1; 198 break; 199 200 case 'r': /* read cache size */ 201 readcache = numarg("read cache size", 0, 512); 202 break; 203 204 case 's': /* tape size, feet */ 205 tsize = numarg("tape size", 1L, 0L) * 12 * 10; 206 break; 207 208 case 'S': /* exit after estimating # of tapes */ 209 just_estimate = 1; 210 break; 211 212 case 'T': /* time of last dump */ 213 spcl.c_ddate = unctime(optarg); 214 if (spcl.c_ddate < 0) { 215 (void)fprintf(stderr, "bad time \"%s\"\n", 216 optarg); 217 exit(X_ABORT); 218 } 219 Tflag = 1; 220 lastlevel = '?'; 221 break; 222 223 case 'u': /* update /etc/dumpdates */ 224 uflag = 1; 225 break; 226 227 case 'W': /* what to do */ 228 case 'w': 229 lastdump(ch); 230 exit(0); /* do nothing else */ 231 232 default: 233 usage(); 234 } 235 argc -= optind; 236 argv += optind; 237 238 if (argc < 1) { 239 (void)fprintf(stderr, "Must specify disk or filesystem\n"); 240 exit(X_ABORT); 241 } 242 243 /* 244 * determine if disk is a subdirectory, and setup appropriately 245 */ 246 dirlist = 0; 247 toplevel = NULL; 248 for (i = 0; i < argc; i++) { 249 struct stat sb; 250 struct statfs fsbuf; 251 252 if (lstat(argv[i], &sb) == -1) { 253 msg("Cannot lstat %s: %s\n", argv[i], strerror(errno)); 254 exit(X_ABORT); 255 } 256 if (!S_ISDIR(sb.st_mode) && !S_ISREG(sb.st_mode)) 257 break; 258 if (statfs(argv[i], &fsbuf) == -1) { 259 msg("Cannot statfs %s: %s\n", argv[i], strerror(errno)); 260 exit(X_ABORT); 261 } 262 if (strcmp(argv[i], fsbuf.f_mntonname) == 0) { 263 if (dirlist != 0) { 264 msg("Can't dump a mountpoint and a filelist\n"); 265 exit(X_ABORT); 266 } 267 break; /* exit if sole mountpoint */ 268 } 269 if (!disk) { 270 if ((toplevel = strdup(fsbuf.f_mntonname)) == NULL) { 271 msg("Cannot malloc diskname\n"); 272 exit(X_ABORT); 273 } 274 disk = toplevel; 275 if (uflag) { 276 msg("Ignoring u flag for subdir dump\n"); 277 uflag = 0; 278 } 279 if (level > '0') { 280 msg("Subdir dump is done at level 0\n"); 281 level = '0'; 282 } 283 msg("Dumping sub files/directories from %s\n", disk); 284 } else { 285 if (strcmp(disk, fsbuf.f_mntonname) != 0) { 286 msg("%s is not on %s\n", argv[i], disk); 287 exit(X_ABORT); 288 } 289 } 290 msg("Dumping file/directory %s\n", argv[i]); 291 dirlist++; 292 } 293 if (dirlist == 0) { 294 disk = *argv++; 295 if (argc != 1) { 296 (void)fprintf(stderr, "Excess arguments to dump:"); 297 while (--argc) 298 (void)fprintf(stderr, " %s", *argv++); 299 (void)fprintf(stderr, "\n"); 300 exit(X_ABORT); 301 } 302 } 303 if (Tflag && uflag) { 304 (void)fprintf(stderr, 305 "You cannot use the T and u flags together.\n"); 306 exit(X_ABORT); 307 } 308 if (strcmp(tape, "-") == 0) { 309 pipeout++; 310 tape = "standard output"; 311 } 312 313 if (blocksperfile) 314 blocksperfile = blocksperfile / ntrec * ntrec; /* round down */ 315 else { 316 /* 317 * Determine how to default tape size and density 318 * 319 * density tape size 320 * 9-track 1600 bpi (160 bytes/.1") 2300 ft. 321 * 9-track 6250 bpi (625 bytes/.1") 2300 ft. 322 * cartridge 8000 bpi (100 bytes/.1") 1700 ft. 323 * (450*4 - slop) 324 */ 325 if (density == 0) 326 density = cartridge ? 100 : 160; 327 if (tsize == 0) 328 tsize = cartridge ? 1700L*120L : 2300L*120L; 329 } 330 331 if (strchr(tape, ':')) { 332 host = tape; 333 tape = strchr(host, ':'); 334 *tape++ = '\0'; 335 #ifdef RDUMP 336 if (rmthost(host) == 0) 337 exit(X_ABORT); 338 #else 339 (void)fprintf(stderr, "remote dump not enabled\n"); 340 exit(X_ABORT); 341 #endif 342 } 343 344 if (signal(SIGHUP, SIG_IGN) != SIG_IGN) 345 signal(SIGHUP, sig); 346 if (signal(SIGTRAP, SIG_IGN) != SIG_IGN) 347 signal(SIGTRAP, sig); 348 if (signal(SIGFPE, SIG_IGN) != SIG_IGN) 349 signal(SIGFPE, sig); 350 if (signal(SIGBUS, SIG_IGN) != SIG_IGN) 351 signal(SIGBUS, sig); 352 if (signal(SIGSEGV, SIG_IGN) != SIG_IGN) 353 signal(SIGSEGV, sig); 354 if (signal(SIGTERM, SIG_IGN) != SIG_IGN) 355 signal(SIGTERM, sig); 356 if (signal(SIGINT, interrupt) == SIG_IGN) 357 signal(SIGINT, SIG_IGN); 358 359 set_operators(); /* /etc/group snarfed */ 360 getfstab(); /* /etc/fstab snarfed */ 361 362 /* 363 * disk can be either the full special file name, 364 * the suffix of the special file name, 365 * the special name missing the leading '/', 366 * the file system name with or without the leading '/'. 367 */ 368 dt = fstabsearch(disk); 369 if (dt != NULL) { 370 disk = rawname(dt->fs_spec); 371 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN); 372 if (dirlist != 0) 373 (void)snprintf(spcl.c_filesys, NAMELEN, 374 "a subset of %s", dt->fs_file); 375 else 376 (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN); 377 } else { 378 (void)strncpy(spcl.c_dev, disk, NAMELEN); 379 (void)strncpy(spcl.c_filesys, "an unlisted file system", 380 NAMELEN); 381 } 382 (void)strncpy(spcl.c_label, labelstr, sizeof(spcl.c_label) - 1); 383 (void)gethostname(spcl.c_host, NAMELEN); 384 spcl.c_host[sizeof(spcl.c_host) - 1] = '\0'; 385 386 if ((diskfd = open(disk, O_RDONLY)) < 0) { 387 msg("Cannot open %s\n", disk); 388 exit(X_ABORT); 389 } 390 sync(); 391 392 needswap = fs_read_sblock(sblock_buf); 393 394 spcl.c_level = iswap32(level - '0'); 395 spcl.c_type = iswap32(TS_TAPE); 396 spcl.c_date = iswap32(spcl.c_date); 397 spcl.c_ddate = iswap32(spcl.c_ddate); 398 if (!Tflag) 399 getdumptime(); /* /etc/dumpdates snarfed */ 400 401 date = iswap32(spcl.c_date); 402 msg("Date of this level %c dump: %s", level, 403 spcl.c_date == 0 ? "the epoch\n" : ctime(&date)); 404 date = iswap32(spcl.c_ddate); 405 msg("Date of last level %c dump: %s", lastlevel, 406 spcl.c_ddate == 0 ? "the epoch\n" : ctime(&date)); 407 msg("Dumping "); 408 if (dt != NULL && dirlist != 0) 409 msgtail("a subset of "); 410 msgtail("%s (%s) ", disk, spcl.c_filesys); 411 if (host) 412 msgtail("to %s on host %s\n", tape, host); 413 else 414 msgtail("to %s\n", tape); 415 msg("Label: %s\n", labelstr); 416 417 ufsib = fs_parametrize(); 418 419 dev_bshift = ffs(dev_bsize) - 1; 420 if (dev_bsize != (1 << dev_bshift)) 421 quit("dev_bsize (%ld) is not a power of 2", dev_bsize); 422 tp_bshift = ffs(TP_BSIZE) - 1; 423 if (TP_BSIZE != (1 << tp_bshift)) 424 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE); 425 maxino = fs_maxino(); 426 mapsize = roundup(howmany(maxino, NBBY), TP_BSIZE); 427 usedinomap = (char *)calloc((unsigned) mapsize, sizeof(char)); 428 dumpdirmap = (char *)calloc((unsigned) mapsize, sizeof(char)); 429 dumpinomap = (char *)calloc((unsigned) mapsize, sizeof(char)); 430 tapesize = 3 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1); 431 432 nonodump = iswap32(spcl.c_level) < honorlevel; 433 434 initcache(readcache, readblksize); 435 436 (void)signal(SIGINFO, statussig); 437 438 msg("mapping (Pass I) [regular files]\n"); 439 anydirskipped = mapfiles(maxino, &tapesize, toplevel, 440 (dirlist ? argv : NULL)); 441 442 msg("mapping (Pass II) [directories]\n"); 443 while (anydirskipped) { 444 anydirskipped = mapdirs(maxino, &tapesize); 445 } 446 447 if (pipeout) { 448 tapesize += 10; /* 10 trailer blocks */ 449 msg("estimated %ld tape blocks.\n", tapesize); 450 } else { 451 double fetapes; 452 453 if (blocksperfile) 454 fetapes = (double) tapesize / blocksperfile; 455 else if (cartridge) { 456 /* Estimate number of tapes, assuming streaming stops at 457 the end of each block written, and not in mid-block. 458 Assume no erroneous blocks; this can be compensated 459 for with an artificially low tape size. */ 460 fetapes = 461 ( tapesize /* blocks */ 462 * TP_BSIZE /* bytes/block */ 463 * (1.0/density) /* 0.1" / byte */ 464 + 465 tapesize /* blocks */ 466 * (1.0/ntrec) /* streaming-stops per block */ 467 * 15.48 /* 0.1" / streaming-stop */ 468 ) * (1.0 / tsize ); /* tape / 0.1" */ 469 } else { 470 /* Estimate number of tapes, for old fashioned 9-track 471 tape */ 472 int tenthsperirg = (density == 625) ? 3 : 7; 473 fetapes = 474 ( tapesize /* blocks */ 475 * TP_BSIZE /* bytes / block */ 476 * (1.0/density) /* 0.1" / byte */ 477 + 478 tapesize /* blocks */ 479 * (1.0/ntrec) /* IRG's / block */ 480 * tenthsperirg /* 0.1" / IRG */ 481 ) * (1.0 / tsize ); /* tape / 0.1" */ 482 } 483 etapes = fetapes; /* truncating assignment */ 484 etapes++; 485 /* count the dumped inodes map on each additional tape */ 486 tapesize += (etapes - 1) * 487 (howmany(mapsize * sizeof(char), TP_BSIZE) + 1); 488 tapesize += etapes + 10; /* headers + 10 trailer blks */ 489 msg("estimated %ld tape blocks on %3.2f tape(s).\n", 490 tapesize, fetapes); 491 } 492 /* 493 * If the user only wants an estimate of the number of 494 * tapes, exit now. 495 */ 496 if (just_estimate) 497 exit(0); 498 499 /* 500 * Allocate tape buffer. 501 */ 502 if (!alloctape()) 503 quit("can't allocate tape buffers - try a smaller blocking factor.\n"); 504 505 startnewtape(1); 506 (void)time((time_t *)&(tstart_writing)); 507 xferrate = 0; 508 dumpmap(usedinomap, TS_CLRI, maxino - 1); 509 510 msg("dumping (Pass III) [directories]\n"); 511 dirty = 0; /* XXX just to get gcc to shut up */ 512 for (map = dumpdirmap, ino = 1; ino < maxino; ino++) { 513 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */ 514 dirty = *map++; 515 else 516 dirty >>= 1; 517 if ((dirty & 1) == 0) 518 continue; 519 /* 520 * Skip directory inodes deleted and maybe reallocated 521 */ 522 dp = getino(ino); 523 if ((dp->di_mode & IFMT) != IFDIR) 524 continue; 525 (void)dumpino(dp, ino); 526 } 527 528 msg("dumping (Pass IV) [regular files]\n"); 529 for (map = dumpinomap, ino = 1; ino < maxino; ino++) { 530 int mode; 531 532 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */ 533 dirty = *map++; 534 else 535 dirty >>= 1; 536 if ((dirty & 1) == 0) 537 continue; 538 /* 539 * Skip inodes deleted and reallocated as directories. 540 */ 541 dp = getino(ino); 542 mode = dp->di_mode & IFMT; 543 if (mode == IFDIR) 544 continue; 545 (void)dumpino(dp, ino); 546 } 547 548 spcl.c_type = iswap32(TS_END); 549 for (i = 0; i < ntrec; i++) 550 writeheader(maxino - 1); 551 if (pipeout) 552 msg("%d tape blocks\n",iswap32(spcl.c_tapea)); 553 else 554 msg("%d tape blocks on %d volume%s\n", 555 iswap32(spcl.c_tapea), iswap32(spcl.c_volume), 556 (iswap32(spcl.c_volume) == 1) ? "" : "s"); 557 tnow = do_stats(); 558 date = iswap32(spcl.c_date); 559 msg("Date of this level %c dump: %s", level, 560 spcl.c_date == 0 ? "the epoch\n" : ctime(&date)); 561 msg("Date this dump completed: %s", ctime(&tnow)); 562 msg("Average transfer rate: %d KB/s\n", xferrate / tapeno); 563 putdumptime(); 564 trewind(0); 565 broadcast("DUMP IS DONE!\7\7\n"); 566 msg("DUMP IS DONE\n"); 567 Exit(X_FINOK); 568 /* NOTREACHED */ 569 exit(X_FINOK); /* XXX: to satisfy gcc */ 570 } 571 572 static void 573 usage() 574 { 575 576 (void)fprintf(stderr, "%s\n%s\n%s\n%s\n", 577 "usage: dump [-0123456789cnu] [-B records] [-b blocksize] [-d density]", 578 " [-f file] [-h level] [-k read block size] [-L label]", 579 " [-r read cache size] [-s feet] [-T date] filesystem", 580 " dump [-W | -w]"); 581 exit(1); 582 } 583 584 /* 585 * Pick up a numeric argument. It must be nonnegative and in the given 586 * range (except that a vmax of 0 means unlimited). 587 */ 588 static long 589 numarg(meaning, vmin, vmax) 590 char *meaning; 591 long vmin, vmax; 592 { 593 char *p; 594 long val; 595 596 val = strtol(optarg, &p, 10); 597 if (*p) 598 errx(1, "illegal %s -- %s", meaning, optarg); 599 if (val < vmin || (vmax && val > vmax)) 600 errx(1, "%s must be between %ld and %ld", meaning, vmin, vmax); 601 return (val); 602 } 603 604 void 605 sig(signo) 606 int signo; 607 { 608 switch(signo) { 609 case SIGALRM: 610 case SIGBUS: 611 case SIGFPE: 612 case SIGHUP: 613 case SIGTERM: 614 case SIGTRAP: 615 if (pipeout) 616 quit("Signal on pipe: cannot recover\n"); 617 msg("Rewriting attempted as response to unknown signal.\n"); 618 (void)fflush(stderr); 619 (void)fflush(stdout); 620 close_rewind(); 621 exit(X_REWRITE); 622 /* NOTREACHED */ 623 case SIGSEGV: 624 msg("SIGSEGV: ABORTING!\n"); 625 (void)signal(SIGSEGV, SIG_DFL); 626 (void)kill(0, SIGSEGV); 627 /* NOTREACHED */ 628 } 629 } 630 631 char * 632 rawname(cp) 633 char *cp; 634 { 635 static char rawbuf[MAXPATHLEN]; 636 char *dp = strrchr(cp, '/'); 637 638 if (dp == NULL) 639 return (NULL); 640 *dp = '\0'; 641 (void)snprintf(rawbuf, sizeof rawbuf, "%s/r%s", cp, dp + 1); 642 *dp = '/'; 643 return (rawbuf); 644 } 645 646 /* 647 * obsolete -- 648 * Change set of key letters and ordered arguments into something 649 * getopt(3) will like. 650 */ 651 static void 652 obsolete(argcp, argvp) 653 int *argcp; 654 char **argvp[]; 655 { 656 int argc, flags; 657 char *ap, **argv, *flagsp, **nargv, *p; 658 659 /* Setup. */ 660 argv = *argvp; 661 argc = *argcp; 662 663 /* Return if no arguments or first argument has leading dash. */ 664 ap = argv[1]; 665 if (argc == 1 || *ap == '-') 666 return; 667 668 /* Allocate space for new arguments. */ 669 if ((*argvp = nargv = malloc((argc + 1) * sizeof(char *))) == NULL || 670 (p = flagsp = malloc(strlen(ap) + 2)) == NULL) 671 err(1, "malloc"); 672 673 *nargv++ = *argv; 674 argv += 2; 675 676 for (flags = 0; *ap; ++ap) { 677 switch (*ap) { 678 case 'B': 679 case 'b': 680 case 'd': 681 case 'f': 682 case 'h': 683 case 's': 684 case 'T': 685 if (*argv == NULL) { 686 warnx("option requires an argument -- %c", *ap); 687 usage(); 688 } 689 if ((nargv[0] = malloc(strlen(*argv) + 2 + 1)) == NULL) 690 err(1, "malloc"); 691 nargv[0][0] = '-'; 692 nargv[0][1] = *ap; 693 (void)strcpy(&nargv[0][2], *argv); /* XXX safe strcpy */ 694 ++argv; 695 ++nargv; 696 break; 697 default: 698 if (!flags) { 699 *p++ = '-'; 700 flags = 1; 701 } 702 *p++ = *ap; 703 break; 704 } 705 } 706 707 /* Terminate flags. */ 708 if (flags) { 709 *p = '\0'; 710 *nargv++ = flagsp; 711 } 712 713 /* Copy remaining arguments. */ 714 while ((*nargv++ = *argv++) != NULL) 715 ; 716 717 /* Update argument count. */ 718 *argcp = nargv - *argvp - 1; 719 } 720
Indexes created Tue Sep 23 02:09:52 GMT 2025