main.c revision 1.25
1 /* $NetBSD: main.c,v 1.25 1999/10/01 04:35:23 perseant 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 1999/10/01 04:35:23 perseant 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 = 0; /* notify operator flag */ 84 int blockswritten = 0; /* number of blocks written on current tape */ 85 int tapeno = 0; /* current tape number */ 86 int density = 0; /* density in bytes/0.1" */ 87 int ntrec = NTREC; /* # tape blocks in each tape record */ 88 int cartridge = 0; /* Assume non-cartridge tape */ 89 long dev_bsize = 1; /* recalculated below */ 90 long blocksperfile = 0; /* output blocks per file */ 91 char *host = NULL; /* 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:f: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 'f': /* output file */ 165 tape = optarg; 166 break; 167 168 case 'h': 169 honorlevel = numarg("honor level", 0L, 10L); 170 break; 171 172 case 'k': 173 readblksize = numarg("read block size", 0, 64) * 1024; 174 break; 175 176 case 'L': 177 /* 178 * Note that although there are LBLSIZE characters, 179 * the last must be '\0', so the limit on strlen() 180 * is really LBLSIZE-1. 181 */ 182 strncpy(labelstr, optarg, LBLSIZE); 183 labelstr[LBLSIZE-1] = '\0'; 184 if (strlen(optarg) > LBLSIZE-1) { 185 msg( 186 "WARNING Label `%s' is larger than limit of %d characters.\n", 187 optarg, LBLSIZE-1); 188 msg("WARNING: Using truncated label `%s'.\n", 189 labelstr); 190 } 191 break; 192 case 'n': /* notify operators */ 193 notify = 1; 194 break; 195 196 case 'r': /* read cache size */ 197 readcache = numarg("read cache size", 0, 512); 198 break; 199 200 case 's': /* tape size, feet */ 201 tsize = numarg("tape size", 1L, 0L) * 12 * 10; 202 break; 203 204 case 'S': /* exit after estimating # of tapes */ 205 just_estimate = 1; 206 break; 207 208 case 'T': /* time of last dump */ 209 spcl.c_ddate = unctime(optarg); 210 if (spcl.c_ddate < 0) { 211 (void)fprintf(stderr, "bad time \"%s\"\n", 212 optarg); 213 exit(X_ABORT); 214 } 215 Tflag = 1; 216 lastlevel = '?'; 217 break; 218 219 case 'u': /* update /etc/dumpdates */ 220 uflag = 1; 221 break; 222 223 case 'W': /* what to do */ 224 case 'w': 225 lastdump(ch); 226 exit(0); /* do nothing else */ 227 228 default: 229 usage(); 230 } 231 argc -= optind; 232 argv += optind; 233 234 if (argc < 1) { 235 (void)fprintf(stderr, "Must specify disk or filesystem\n"); 236 exit(X_ABORT); 237 } 238 239 /* 240 * determine if disk is a subdirectory, and setup appropriately 241 */ 242 dirlist = 0; 243 toplevel = NULL; 244 for (i = 0; i < argc; i++) { 245 struct stat sb; 246 struct statfs fsbuf; 247 248 if (lstat(argv[i], &sb) == -1) { 249 msg("Cannot lstat %s: %s\n", argv[i], strerror(errno)); 250 exit(X_ABORT); 251 } 252 if (!S_ISDIR(sb.st_mode) && !S_ISREG(sb.st_mode)) 253 break; 254 if (statfs(argv[i], &fsbuf) == -1) { 255 msg("Cannot statfs %s: %s\n", argv[i], strerror(errno)); 256 exit(X_ABORT); 257 } 258 if (strcmp(argv[i], fsbuf.f_mntonname) == 0) { 259 if (dirlist != 0) { 260 msg("Can't dump a mountpoint and a filelist\n"); 261 exit(X_ABORT); 262 } 263 break; /* exit if sole mountpoint */ 264 } 265 if (!disk) { 266 if ((toplevel = strdup(fsbuf.f_mntonname)) == NULL) { 267 msg("Cannot malloc diskname\n"); 268 exit(X_ABORT); 269 } 270 disk = toplevel; 271 if (uflag) { 272 msg("Ignoring u flag for subdir dump\n"); 273 uflag = 0; 274 } 275 if (level > '0') { 276 msg("Subdir dump is done at level 0\n"); 277 level = '0'; 278 } 279 msg("Dumping sub files/directories from %s\n", disk); 280 } else { 281 if (strcmp(disk, fsbuf.f_mntonname) != 0) { 282 msg("%s is not on %s\n", argv[i], disk); 283 exit(X_ABORT); 284 } 285 } 286 msg("Dumping file/directory %s\n", argv[i]); 287 dirlist++; 288 } 289 if (dirlist == 0) { 290 disk = *argv++; 291 if (argc != 1) { 292 (void)fprintf(stderr, "Excess arguments to dump:"); 293 while (--argc) 294 (void)fprintf(stderr, " %s", *argv++); 295 (void)fprintf(stderr, "\n"); 296 exit(X_ABORT); 297 } 298 } 299 if (Tflag && uflag) { 300 (void)fprintf(stderr, 301 "You cannot use the T and u flags together.\n"); 302 exit(X_ABORT); 303 } 304 if (strcmp(tape, "-") == 0) { 305 pipeout++; 306 tape = "standard output"; 307 } 308 309 if (blocksperfile) 310 blocksperfile = blocksperfile / ntrec * ntrec; /* round down */ 311 else { 312 /* 313 * Determine how to default tape size and density 314 * 315 * density tape size 316 * 9-track 1600 bpi (160 bytes/.1") 2300 ft. 317 * 9-track 6250 bpi (625 bytes/.1") 2300 ft. 318 * cartridge 8000 bpi (100 bytes/.1") 1700 ft. 319 * (450*4 - slop) 320 */ 321 if (density == 0) 322 density = cartridge ? 100 : 160; 323 if (tsize == 0) 324 tsize = cartridge ? 1700L*120L : 2300L*120L; 325 } 326 327 if (strchr(tape, ':')) { 328 host = tape; 329 tape = strchr(host, ':'); 330 *tape++ = '\0'; 331 #ifdef RDUMP 332 if (rmthost(host) == 0) 333 exit(X_ABORT); 334 #else 335 (void)fprintf(stderr, "remote dump not enabled\n"); 336 exit(X_ABORT); 337 #endif 338 } 339 340 if (signal(SIGHUP, SIG_IGN) != SIG_IGN) 341 signal(SIGHUP, sig); 342 if (signal(SIGTRAP, SIG_IGN) != SIG_IGN) 343 signal(SIGTRAP, sig); 344 if (signal(SIGFPE, SIG_IGN) != SIG_IGN) 345 signal(SIGFPE, sig); 346 if (signal(SIGBUS, SIG_IGN) != SIG_IGN) 347 signal(SIGBUS, sig); 348 if (signal(SIGSEGV, SIG_IGN) != SIG_IGN) 349 signal(SIGSEGV, sig); 350 if (signal(SIGTERM, SIG_IGN) != SIG_IGN) 351 signal(SIGTERM, sig); 352 if (signal(SIGINT, interrupt) == SIG_IGN) 353 signal(SIGINT, SIG_IGN); 354 355 set_operators(); /* /etc/group snarfed */ 356 getfstab(); /* /etc/fstab snarfed */ 357 358 /* 359 * disk can be either the full special file name, 360 * the suffix of the special file name, 361 * the special name missing the leading '/', 362 * the file system name with or without the leading '/'. 363 */ 364 dt = fstabsearch(disk); 365 if (dt != NULL) { 366 disk = rawname(dt->fs_spec); 367 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN); 368 if (dirlist != 0) 369 (void)snprintf(spcl.c_filesys, NAMELEN, 370 "a subset of %s", dt->fs_file); 371 else 372 (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN); 373 } else { 374 (void)strncpy(spcl.c_dev, disk, NAMELEN); 375 (void)strncpy(spcl.c_filesys, "an unlisted file system", 376 NAMELEN); 377 } 378 (void)strncpy(spcl.c_label, labelstr, sizeof(spcl.c_label) - 1); 379 (void)gethostname(spcl.c_host, NAMELEN); 380 spcl.c_host[sizeof(spcl.c_host) - 1] = '\0'; 381 382 if ((diskfd = open(disk, O_RDONLY)) < 0) { 383 msg("Cannot open %s\n", disk); 384 exit(X_ABORT); 385 } 386 sync(); 387 388 needswap = fs_read_sblock(sblock_buf); 389 390 spcl.c_level = iswap32(level - '0'); 391 spcl.c_type = iswap32(TS_TAPE); 392 spcl.c_date = iswap32(spcl.c_date); 393 spcl.c_ddate = iswap32(spcl.c_ddate); 394 if (!Tflag) 395 getdumptime(); /* /etc/dumpdates snarfed */ 396 397 date = iswap32(spcl.c_date); 398 msg("Date of this level %c dump: %s", level, 399 spcl.c_date == 0 ? "the epoch\n" : ctime(&date)); 400 date = iswap32(spcl.c_ddate); 401 msg("Date of last level %c dump: %s", lastlevel, 402 spcl.c_ddate == 0 ? "the epoch\n" : ctime(&date)); 403 msg("Dumping "); 404 if (dt != NULL && dirlist != 0) 405 msgtail("a subset of "); 406 msgtail("%s (%s) ", disk, spcl.c_filesys); 407 if (host) 408 msgtail("to %s on host %s\n", tape, host); 409 else 410 msgtail("to %s\n", tape); 411 msg("Label: %s\n", labelstr); 412 413 ufsib = fs_parametrize(); 414 415 dev_bshift = ffs(dev_bsize) - 1; 416 if (dev_bsize != (1 << dev_bshift)) 417 quit("dev_bsize (%d) is not a power of 2", dev_bsize); 418 tp_bshift = ffs(TP_BSIZE) - 1; 419 if (TP_BSIZE != (1 << tp_bshift)) 420 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE); 421 maxino = fs_maxino(); 422 mapsize = roundup(howmany(maxino, NBBY), TP_BSIZE); 423 usedinomap = (char *)calloc((unsigned) mapsize, sizeof(char)); 424 dumpdirmap = (char *)calloc((unsigned) mapsize, sizeof(char)); 425 dumpinomap = (char *)calloc((unsigned) mapsize, sizeof(char)); 426 tapesize = 3 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1); 427 428 nonodump = iswap32(spcl.c_level) < honorlevel; 429 430 initcache(readcache, readblksize); 431 432 (void)signal(SIGINFO, statussig); 433 434 msg("mapping (Pass I) [regular files]\n"); 435 anydirskipped = mapfiles(maxino, &tapesize, toplevel, 436 (dirlist ? argv : NULL)); 437 438 msg("mapping (Pass II) [directories]\n"); 439 while (anydirskipped) { 440 anydirskipped = mapdirs(maxino, &tapesize); 441 } 442 443 if (pipeout) { 444 tapesize += 10; /* 10 trailer blocks */ 445 msg("estimated %ld tape blocks.\n", tapesize); 446 } else { 447 double fetapes; 448 449 if (blocksperfile) 450 fetapes = (double) tapesize / blocksperfile; 451 else if (cartridge) { 452 /* Estimate number of tapes, assuming streaming stops at 453 the end of each block written, and not in mid-block. 454 Assume no erroneous blocks; this can be compensated 455 for with an artificially low tape size. */ 456 fetapes = 457 ( tapesize /* blocks */ 458 * TP_BSIZE /* bytes/block */ 459 * (1.0/density) /* 0.1" / byte */ 460 + 461 tapesize /* blocks */ 462 * (1.0/ntrec) /* streaming-stops per block */ 463 * 15.48 /* 0.1" / streaming-stop */ 464 ) * (1.0 / tsize ); /* tape / 0.1" */ 465 } else { 466 /* Estimate number of tapes, for old fashioned 9-track 467 tape */ 468 int tenthsperirg = (density == 625) ? 3 : 7; 469 fetapes = 470 ( tapesize /* blocks */ 471 * TP_BSIZE /* bytes / block */ 472 * (1.0/density) /* 0.1" / byte */ 473 + 474 tapesize /* blocks */ 475 * (1.0/ntrec) /* IRG's / block */ 476 * tenthsperirg /* 0.1" / IRG */ 477 ) * (1.0 / tsize ); /* tape / 0.1" */ 478 } 479 etapes = fetapes; /* truncating assignment */ 480 etapes++; 481 /* count the dumped inodes map on each additional tape */ 482 tapesize += (etapes - 1) * 483 (howmany(mapsize * sizeof(char), TP_BSIZE) + 1); 484 tapesize += etapes + 10; /* headers + 10 trailer blks */ 485 msg("estimated %ld tape blocks on %3.2f tape(s).\n", 486 tapesize, fetapes); 487 } 488 /* 489 * If the user only wants an estimate of the number of 490 * tapes, exit now. 491 */ 492 if (just_estimate) 493 exit(0); 494 495 /* 496 * Allocate tape buffer. 497 */ 498 if (!alloctape()) 499 quit("can't allocate tape buffers - try a smaller blocking factor.\n"); 500 501 startnewtape(1); 502 (void)time((time_t *)&(tstart_writing)); 503 xferrate = 0; 504 dumpmap(usedinomap, TS_CLRI, maxino - 1); 505 506 msg("dumping (Pass III) [directories]\n"); 507 dirty = 0; /* XXX just to get gcc to shut up */ 508 for (map = dumpdirmap, ino = 1; ino < maxino; ino++) { 509 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */ 510 dirty = *map++; 511 else 512 dirty >>= 1; 513 if ((dirty & 1) == 0) 514 continue; 515 /* 516 * Skip directory inodes deleted and maybe reallocated 517 */ 518 dp = getino(ino); 519 if ((dp->di_mode & IFMT) != IFDIR) 520 continue; 521 (void)dumpino(dp, ino); 522 } 523 524 msg("dumping (Pass IV) [regular files]\n"); 525 for (map = dumpinomap, ino = 1; ino < maxino; ino++) { 526 int mode; 527 528 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */ 529 dirty = *map++; 530 else 531 dirty >>= 1; 532 if ((dirty & 1) == 0) 533 continue; 534 /* 535 * Skip inodes deleted and reallocated as directories. 536 */ 537 dp = getino(ino); 538 mode = dp->di_mode & IFMT; 539 if (mode == IFDIR) 540 continue; 541 (void)dumpino(dp, ino); 542 } 543 544 spcl.c_type = iswap32(TS_END); 545 for (i = 0; i < ntrec; i++) 546 writeheader(maxino - 1); 547 if (pipeout) 548 msg("%ld tape blocks\n",iswap32(spcl.c_tapea)); 549 else 550 msg("%ld tape blocks on %d volume%s\n", 551 iswap32(spcl.c_tapea), iswap32(spcl.c_volume), 552 (iswap32(spcl.c_volume) == 1) ? "" : "s"); 553 tnow = do_stats(); 554 date = iswap32(spcl.c_date); 555 msg("Date of this level %c dump: %s", level, 556 spcl.c_date == 0 ? "the epoch\n" : ctime(&date)); 557 msg("Date this dump completed: %s", ctime(&tnow)); 558 msg("Average transfer rate: %ld KB/s\n", xferrate / tapeno); 559 putdumptime(); 560 trewind(); 561 broadcast("DUMP IS DONE!\7\7\n"); 562 msg("DUMP IS DONE\n"); 563 Exit(X_FINOK); 564 /* NOTREACHED */ 565 exit(X_FINOK); /* XXX: to satisfy gcc */ 566 } 567 568 static void 569 usage() 570 { 571 572 (void)fprintf(stderr, "%s\n%s\n%s\n%s\n", 573 "usage: dump [-0123456789cnu] [-B records] [-b blocksize] [-d density]", 574 " [-f file] [-h level] [-k read block size] [-L label]", 575 " [-r read cache size] [-s feet] [-T date] filesystem", 576 " dump [-W | -w]"); 577 exit(1); 578 } 579 580 /* 581 * Pick up a numeric argument. It must be nonnegative and in the given 582 * range (except that a vmax of 0 means unlimited). 583 */ 584 static long 585 numarg(meaning, vmin, vmax) 586 char *meaning; 587 long vmin, vmax; 588 { 589 char *p; 590 long val; 591 592 val = strtol(optarg, &p, 10); 593 if (*p) 594 errx(1, "illegal %s -- %s", meaning, optarg); 595 if (val < vmin || (vmax && val > vmax)) 596 errx(1, "%s must be between %ld and %ld", meaning, vmin, vmax); 597 return (val); 598 } 599 600 void 601 sig(signo) 602 int signo; 603 { 604 switch(signo) { 605 case SIGALRM: 606 case SIGBUS: 607 case SIGFPE: 608 case SIGHUP: 609 case SIGTERM: 610 case SIGTRAP: 611 if (pipeout) 612 quit("Signal on pipe: cannot recover\n"); 613 msg("Rewriting attempted as response to unknown signal.\n"); 614 (void)fflush(stderr); 615 (void)fflush(stdout); 616 close_rewind(); 617 exit(X_REWRITE); 618 /* NOTREACHED */ 619 case SIGSEGV: 620 msg("SIGSEGV: ABORTING!\n"); 621 (void)signal(SIGSEGV, SIG_DFL); 622 (void)kill(0, SIGSEGV); 623 /* NOTREACHED */ 624 } 625 } 626 627 char * 628 rawname(cp) 629 char *cp; 630 { 631 static char rawbuf[MAXPATHLEN]; 632 char *dp = strrchr(cp, '/'); 633 634 if (dp == NULL) 635 return (NULL); 636 *dp = '\0'; 637 (void)snprintf(rawbuf, sizeof rawbuf, "%s/r%s", cp, dp + 1); 638 *dp = '/'; 639 return (rawbuf); 640 } 641 642 /* 643 * obsolete -- 644 * Change set of key letters and ordered arguments into something 645 * getopt(3) will like. 646 */ 647 static void 648 obsolete(argcp, argvp) 649 int *argcp; 650 char **argvp[]; 651 { 652 int argc, flags; 653 char *ap, **argv, *flagsp, **nargv, *p; 654 655 /* Setup. */ 656 argv = *argvp; 657 argc = *argcp; 658 659 /* Return if no arguments or first argument has leading dash. */ 660 ap = argv[1]; 661 if (argc == 1 || *ap == '-') 662 return; 663 664 /* Allocate space for new arguments. */ 665 if ((*argvp = nargv = malloc((argc + 1) * sizeof(char *))) == NULL || 666 (p = flagsp = malloc(strlen(ap) + 2)) == NULL) 667 err(1, "malloc"); 668 669 *nargv++ = *argv; 670 argv += 2; 671 672 for (flags = 0; *ap; ++ap) { 673 switch (*ap) { 674 case 'B': 675 case 'b': 676 case 'd': 677 case 'f': 678 case 'h': 679 case 's': 680 case 'T': 681 if (*argv == NULL) { 682 warnx("option requires an argument -- %c", *ap); 683 usage(); 684 } 685 if ((nargv[0] = malloc(strlen(*argv) + 2 + 1)) == NULL) 686 err(1, "malloc"); 687 nargv[0][0] = '-'; 688 nargv[0][1] = *ap; 689 (void)strcpy(&nargv[0][2], *argv); /* XXX safe strcpy */ 690 ++argv; 691 ++nargv; 692 break; 693 default: 694 if (!flags) { 695 *p++ = '-'; 696 flags = 1; 697 } 698 *p++ = *ap; 699 break; 700 } 701 } 702 703 /* Terminate flags. */ 704 if (flags) { 705 *p = '\0'; 706 *nargv++ = flagsp; 707 } 708 709 /* Copy remaining arguments. */ 710 while ((*nargv++ = *argv++) != NULL) 711 ; 712 713 /* Update argument count. */ 714 *argcp = nargv - *argvp - 1; 715 } 716
Indexes created Tue Sep 23 07:09:52 GMT 2025