main.c revision 1.32
1 /* $NetBSD: main.c,v 1.32 2001/05/27 15:07:34 lukem 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 1.32 2001/05/27 15:07:34 lukem 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 char *map; 108 int ch; 109 int i, anydirskipped, bflag = 0, Tflag = 0, honorlevel = 1; 110 ino_t maxino; 111 time_t tnow, date; 112 int dirlist; 113 char *toplevel; 114 int just_estimate = 0; 115 char labelstr[LBLSIZE]; 116 117 spcl.c_date = 0; 118 (void)time((time_t *)&spcl.c_date); 119 120 tsize = 0; /* Default later, based on 'c' option for cart tapes */ 121 if ((tape = getenv("TAPE")) == NULL) 122 tape = _PATH_DEFTAPE; 123 dumpdates = _PATH_DUMPDATES; 124 temp = _PATH_DTMP; 125 strcpy(labelstr, "none"); /* XXX safe strcpy. */ 126 if (TP_BSIZE / DEV_BSIZE == 0 || TP_BSIZE % DEV_BSIZE != 0) 127 quit("TP_BSIZE must be a multiple of DEV_BSIZE\n"); 128 level = '0'; 129 130 if (argc < 2) 131 usage(); 132 133 obsolete(&argc, &argv); 134 while ((ch = getopt(argc, argv, 135 "0123456789B:b:cd:ef:h:k:L:nr:s:ST:uWw")) != -1) 136 switch (ch) { 137 /* dump level */ 138 case '0': case '1': case '2': case '3': case '4': 139 case '5': case '6': case '7': case '8': case '9': 140 level = ch; 141 break; 142 143 case 'B': /* blocks per output file */ 144 blocksperfile = numarg("blocks per file", 1L, 0L); 145 break; 146 147 case 'b': /* blocks per tape write */ 148 ntrec = numarg("blocks per write", 1L, 1000L); 149 bflag = 1; 150 break; 151 152 case 'c': /* Tape is cart. not 9-track */ 153 cartridge = 1; 154 break; 155 156 case 'd': /* density, in bits per inch */ 157 density = numarg("density", 10L, 327670L) / 10; 158 if (density >= 625 && !bflag) 159 ntrec = HIGHDENSITYTREC; 160 break; 161 162 case 'e': /* eject full tapes */ 163 eflag = 1; 164 break; 165 166 case 'f': /* output file */ 167 tape = optarg; 168 break; 169 170 case 'h': 171 honorlevel = numarg("honor level", 0L, 10L); 172 break; 173 174 case 'k': 175 readblksize = numarg("read block size", 0, 64) * 1024; 176 break; 177 178 case 'L': 179 /* 180 * Note that although there are LBLSIZE characters, 181 * the last must be '\0', so the limit on strlen() 182 * is really LBLSIZE-1. 183 */ 184 strncpy(labelstr, optarg, LBLSIZE); 185 labelstr[LBLSIZE-1] = '\0'; 186 if (strlen(optarg) > LBLSIZE-1) { 187 msg( 188 "WARNING Label `%s' is larger than limit of %d characters.\n", 189 optarg, LBLSIZE-1); 190 msg("WARNING: Using truncated label `%s'.\n", 191 labelstr); 192 } 193 break; 194 case 'n': /* notify operators */ 195 notify = 1; 196 break; 197 198 case 'r': /* read cache size */ 199 readcache = numarg("read cache size", 0, 512); 200 break; 201 202 case 's': /* tape size, feet */ 203 tsize = numarg("tape size", 1L, 0L) * 12 * 10; 204 break; 205 206 case 'S': /* exit after estimating # of tapes */ 207 just_estimate = 1; 208 break; 209 210 case 'T': /* time of last dump */ 211 spcl.c_ddate = unctime(optarg); 212 if (spcl.c_ddate < 0) { 213 (void)fprintf(stderr, "bad time \"%s\"\n", 214 optarg); 215 exit(X_ABORT); 216 } 217 Tflag = 1; 218 lastlevel = '?'; 219 break; 220 221 case 'u': /* update /etc/dumpdates */ 222 uflag = 1; 223 break; 224 225 case 'W': /* what to do */ 226 case 'w': 227 lastdump(ch); 228 exit(0); /* do nothing else */ 229 230 default: 231 usage(); 232 } 233 argc -= optind; 234 argv += optind; 235 236 if (argc < 1) { 237 (void)fprintf(stderr, "Must specify disk or filesystem\n"); 238 exit(X_ABORT); 239 } 240 241 /* 242 * determine if disk is a subdirectory, and setup appropriately 243 */ 244 dirlist = 0; 245 toplevel = NULL; 246 for (i = 0; i < argc; i++) { 247 struct stat sb; 248 struct statfs fsbuf; 249 250 if (lstat(argv[i], &sb) == -1) { 251 msg("Cannot lstat %s: %s\n", argv[i], strerror(errno)); 252 exit(X_ABORT); 253 } 254 if (!S_ISDIR(sb.st_mode) && !S_ISREG(sb.st_mode)) 255 break; 256 if (statfs(argv[i], &fsbuf) == -1) { 257 msg("Cannot statfs %s: %s\n", argv[i], strerror(errno)); 258 exit(X_ABORT); 259 } 260 if (strcmp(argv[i], fsbuf.f_mntonname) == 0) { 261 if (dirlist != 0) { 262 msg("Can't dump a mountpoint and a filelist\n"); 263 exit(X_ABORT); 264 } 265 break; /* exit if sole mountpoint */ 266 } 267 if (!disk) { 268 if ((toplevel = strdup(fsbuf.f_mntonname)) == NULL) { 269 msg("Cannot malloc diskname\n"); 270 exit(X_ABORT); 271 } 272 disk = toplevel; 273 if (uflag) { 274 msg("Ignoring u flag for subdir dump\n"); 275 uflag = 0; 276 } 277 if (level > '0') { 278 msg("Subdir dump is done at level 0\n"); 279 level = '0'; 280 } 281 msg("Dumping sub files/directories from %s\n", disk); 282 } else { 283 if (strcmp(disk, fsbuf.f_mntonname) != 0) { 284 msg("%s is not on %s\n", argv[i], disk); 285 exit(X_ABORT); 286 } 287 } 288 msg("Dumping file/directory %s\n", argv[i]); 289 dirlist++; 290 } 291 if (dirlist == 0) { 292 disk = *argv++; 293 if (argc != 1) { 294 (void)fprintf(stderr, "Excess arguments to dump:"); 295 while (--argc) 296 (void)fprintf(stderr, " %s", *argv++); 297 (void)fprintf(stderr, "\n"); 298 exit(X_ABORT); 299 } 300 } 301 if (Tflag && uflag) { 302 (void)fprintf(stderr, 303 "You cannot use the T and u flags together.\n"); 304 exit(X_ABORT); 305 } 306 if (strcmp(tape, "-") == 0) { 307 pipeout++; 308 tape = "standard output"; 309 } 310 311 if (blocksperfile) 312 blocksperfile = blocksperfile / ntrec * ntrec; /* round down */ 313 else { 314 /* 315 * Determine how to default tape size and density 316 * 317 * density tape size 318 * 9-track 1600 bpi (160 bytes/.1") 2300 ft. 319 * 9-track 6250 bpi (625 bytes/.1") 2300 ft. 320 * cartridge 8000 bpi (100 bytes/.1") 1700 ft. 321 * (450*4 - slop) 322 */ 323 if (density == 0) 324 density = cartridge ? 100 : 160; 325 if (tsize == 0) 326 tsize = cartridge ? 1700L*120L : 2300L*120L; 327 } 328 329 if (strchr(tape, ':')) { 330 host = tape; 331 tape = strchr(host, ':'); 332 *tape++ = '\0'; 333 #ifdef RDUMP 334 if (rmthost(host) == 0) 335 exit(X_ABORT); 336 #else 337 (void)fprintf(stderr, "remote dump not enabled\n"); 338 exit(X_ABORT); 339 #endif 340 } 341 342 if (signal(SIGHUP, SIG_IGN) != SIG_IGN) 343 signal(SIGHUP, sig); 344 if (signal(SIGTRAP, SIG_IGN) != SIG_IGN) 345 signal(SIGTRAP, sig); 346 if (signal(SIGFPE, SIG_IGN) != SIG_IGN) 347 signal(SIGFPE, sig); 348 if (signal(SIGBUS, SIG_IGN) != SIG_IGN) 349 signal(SIGBUS, sig); 350 if (signal(SIGSEGV, SIG_IGN) != SIG_IGN) 351 signal(SIGSEGV, sig); 352 if (signal(SIGTERM, SIG_IGN) != SIG_IGN) 353 signal(SIGTERM, sig); 354 if (signal(SIGINT, interrupt) == SIG_IGN) 355 signal(SIGINT, SIG_IGN); 356 357 set_operators(); /* /etc/group snarfed */ 358 getfstab(); /* /etc/fstab snarfed */ 359 360 /* 361 * disk can be either the full special file name, 362 * the suffix of the special file name, 363 * the special name missing the leading '/', 364 * the file system name with or without the leading '/'. 365 */ 366 dt = fstabsearch(disk); 367 if (dt != NULL) { 368 disk = rawname(dt->fs_spec); 369 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN); 370 if (dirlist != 0) 371 (void)snprintf(spcl.c_filesys, NAMELEN, 372 "a subset of %s", dt->fs_file); 373 else 374 (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN); 375 } else { 376 (void)strncpy(spcl.c_dev, disk, NAMELEN); 377 (void)strncpy(spcl.c_filesys, "an unlisted file system", 378 NAMELEN); 379 } 380 (void)strncpy(spcl.c_label, labelstr, sizeof(spcl.c_label) - 1); 381 (void)gethostname(spcl.c_host, NAMELEN); 382 spcl.c_host[sizeof(spcl.c_host) - 1] = '\0'; 383 384 if ((diskfd = open(disk, O_RDONLY)) < 0) { 385 msg("Cannot open %s\n", disk); 386 exit(X_ABORT); 387 } 388 sync(); 389 390 needswap = fs_read_sblock(sblock_buf); 391 392 spcl.c_level = iswap32(level - '0'); 393 spcl.c_type = iswap32(TS_TAPE); 394 spcl.c_date = iswap32(spcl.c_date); 395 spcl.c_ddate = iswap32(spcl.c_ddate); 396 if (!Tflag) 397 getdumptime(); /* /etc/dumpdates snarfed */ 398 399 date = iswap32(spcl.c_date); 400 msg("Date of this level %c dump: %s", level, 401 spcl.c_date == 0 ? "the epoch\n" : ctime(&date)); 402 date = iswap32(spcl.c_ddate); 403 msg("Date of last level %c dump: %s", lastlevel, 404 spcl.c_ddate == 0 ? "the epoch\n" : ctime(&date)); 405 msg("Dumping "); 406 if (dt != NULL && dirlist != 0) 407 msgtail("a subset of "); 408 msgtail("%s (%s) ", disk, spcl.c_filesys); 409 if (host) 410 msgtail("to %s on host %s\n", tape, host); 411 else 412 msgtail("to %s\n", tape); 413 msg("Label: %s\n", labelstr); 414 415 ufsib = fs_parametrize(); 416 417 dev_bshift = ffs(dev_bsize) - 1; 418 if (dev_bsize != (1 << dev_bshift)) 419 quit("dev_bsize (%ld) is not a power of 2", dev_bsize); 420 tp_bshift = ffs(TP_BSIZE) - 1; 421 if (TP_BSIZE != (1 << tp_bshift)) 422 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE); 423 maxino = fs_maxino(); 424 mapsize = roundup(howmany(maxino, NBBY), TP_BSIZE); 425 usedinomap = (char *)calloc((unsigned) mapsize, sizeof(char)); 426 dumpdirmap = (char *)calloc((unsigned) mapsize, sizeof(char)); 427 dumpinomap = (char *)calloc((unsigned) mapsize, sizeof(char)); 428 tapesize = 3 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1); 429 430 nonodump = iswap32(spcl.c_level) < honorlevel; 431 432 initcache(readcache, readblksize); 433 434 (void)signal(SIGINFO, statussig); 435 436 msg("mapping (Pass I) [regular files]\n"); 437 anydirskipped = mapfiles(maxino, &tapesize, toplevel, 438 (dirlist ? argv : NULL)); 439 440 msg("mapping (Pass II) [directories]\n"); 441 while (anydirskipped) { 442 anydirskipped = mapdirs(maxino, &tapesize); 443 } 444 445 if (pipeout) { 446 tapesize += 10; /* 10 trailer blocks */ 447 msg("estimated %ld tape blocks.\n", tapesize); 448 } else { 449 double fetapes; 450 451 if (blocksperfile) 452 fetapes = (double) tapesize / blocksperfile; 453 else if (cartridge) { 454 /* Estimate number of tapes, assuming streaming stops at 455 the end of each block written, and not in mid-block. 456 Assume no erroneous blocks; this can be compensated 457 for with an artificially low tape size. */ 458 fetapes = 459 ( tapesize /* blocks */ 460 * TP_BSIZE /* bytes/block */ 461 * (1.0/density) /* 0.1" / byte */ 462 + 463 tapesize /* blocks */ 464 * (1.0/ntrec) /* streaming-stops per block */ 465 * 15.48 /* 0.1" / streaming-stop */ 466 ) * (1.0 / tsize ); /* tape / 0.1" */ 467 } else { 468 /* Estimate number of tapes, for old fashioned 9-track 469 tape */ 470 int tenthsperirg = (density == 625) ? 3 : 7; 471 fetapes = 472 ( tapesize /* blocks */ 473 * TP_BSIZE /* bytes / block */ 474 * (1.0/density) /* 0.1" / byte */ 475 + 476 tapesize /* blocks */ 477 * (1.0/ntrec) /* IRG's / block */ 478 * tenthsperirg /* 0.1" / IRG */ 479 ) * (1.0 / tsize ); /* tape / 0.1" */ 480 } 481 etapes = fetapes; /* truncating assignment */ 482 etapes++; 483 /* count the dumped inodes map on each additional tape */ 484 tapesize += (etapes - 1) * 485 (howmany(mapsize * sizeof(char), TP_BSIZE) + 1); 486 tapesize += etapes + 10; /* headers + 10 trailer blks */ 487 msg("estimated %ld tape blocks on %3.2f tape(s).\n", 488 tapesize, fetapes); 489 } 490 /* 491 * If the user only wants an estimate of the number of 492 * tapes, exit now. 493 */ 494 if (just_estimate) 495 exit(0); 496 497 /* 498 * Allocate tape buffer. 499 */ 500 if (!alloctape()) 501 quit("can't allocate tape buffers - try a smaller blocking factor.\n"); 502 503 startnewtape(1); 504 (void)time((time_t *)&(tstart_writing)); 505 xferrate = 0; 506 dumpmap(usedinomap, TS_CLRI, maxino - 1); 507 508 msg("dumping (Pass III) [directories]\n"); 509 dirty = 0; /* XXX just to get gcc to shut up */ 510 for (map = dumpdirmap, ino = 1; ino < maxino; ino++) { 511 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */ 512 dirty = *map++; 513 else 514 dirty >>= 1; 515 if ((dirty & 1) == 0) 516 continue; 517 /* 518 * Skip directory inodes deleted and maybe reallocated 519 */ 520 dp = getino(ino); 521 if ((dp->di_mode & IFMT) != IFDIR) 522 continue; 523 (void)dumpino(dp, ino); 524 } 525 526 msg("dumping (Pass IV) [regular files]\n"); 527 for (map = dumpinomap, ino = 1; ino < maxino; ino++) { 528 int mode; 529 530 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */ 531 dirty = *map++; 532 else 533 dirty >>= 1; 534 if ((dirty & 1) == 0) 535 continue; 536 /* 537 * Skip inodes deleted and reallocated as directories. 538 */ 539 dp = getino(ino); 540 mode = dp->di_mode & IFMT; 541 if (mode == IFDIR) 542 continue; 543 (void)dumpino(dp, ino); 544 } 545 546 spcl.c_type = iswap32(TS_END); 547 for (i = 0; i < ntrec; i++) 548 writeheader(maxino - 1); 549 if (pipeout) 550 msg("%d tape blocks\n",iswap32(spcl.c_tapea)); 551 else 552 msg("%d tape blocks on %d volume%s\n", 553 iswap32(spcl.c_tapea), iswap32(spcl.c_volume), 554 (iswap32(spcl.c_volume) == 1) ? "" : "s"); 555 tnow = do_stats(); 556 date = iswap32(spcl.c_date); 557 msg("Date of this level %c dump: %s", level, 558 spcl.c_date == 0 ? "the epoch\n" : ctime(&date)); 559 msg("Date this dump completed: %s", ctime(&tnow)); 560 msg("Average transfer rate: %d KB/s\n", xferrate / tapeno); 561 putdumptime(); 562 trewind(0); 563 broadcast("DUMP IS DONE!\7\7\n"); 564 msg("DUMP IS DONE\n"); 565 Exit(X_FINOK); 566 /* NOTREACHED */ 567 exit(X_FINOK); /* XXX: to satisfy gcc */ 568 } 569 570 static void 571 usage(void) 572 { 573 574 (void)fprintf(stderr, "%s\n%s\n%s\n%s\n", 575 "usage: dump [-0123456789cenu] [-B records] [-b blocksize] [-d density]", 576 " [-f file] [-h level] [-k read block size] [-L label]", 577 " [-r read cache size] [-s feet] [-T date] filesystem", 578 " dump [-W | -w]"); 579 exit(1); 580 } 581 582 /* 583 * Pick up a numeric argument. It must be nonnegative and in the given 584 * range (except that a vmax of 0 means unlimited). 585 */ 586 static long 587 numarg(char *meaning, long vmin, long 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(int signo) 602 { 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(char *cp) 629 { 630 static char rawbuf[MAXPATHLEN]; 631 char *dp = strrchr(cp, '/'); 632 633 if (dp == NULL) 634 return (NULL); 635 *dp = '\0'; 636 (void)snprintf(rawbuf, sizeof rawbuf, "%s/r%s", cp, dp + 1); 637 *dp = '/'; 638 return (rawbuf); 639 } 640 641 /* 642 * obsolete -- 643 * Change set of key letters and ordered arguments into something 644 * getopt(3) will like. 645 */ 646 static void 647 obsolete(int *argcp, char **argvp[]) 648 { 649 int argc, flags; 650 char *ap, **argv, *flagsp, **nargv, *p; 651 652 /* Setup. */ 653 argv = *argvp; 654 argc = *argcp; 655 656 /* Return if no arguments or first argument has leading dash. */ 657 ap = argv[1]; 658 if (argc == 1 || *ap == '-') 659 return; 660 661 /* Allocate space for new arguments. */ 662 if ((*argvp = nargv = malloc((argc + 1) * sizeof(char *))) == NULL || 663 (p = flagsp = malloc(strlen(ap) + 2)) == NULL) 664 err(1, "malloc"); 665 666 *nargv++ = *argv; 667 argv += 2; 668 669 for (flags = 0; *ap; ++ap) { 670 switch (*ap) { 671 case 'B': 672 case 'b': 673 case 'd': 674 case 'f': 675 case 'h': 676 case 's': 677 case 'T': 678 if (*argv == NULL) { 679 warnx("option requires an argument -- %c", *ap); 680 usage(); 681 } 682 if ((nargv[0] = malloc(strlen(*argv) + 2 + 1)) == NULL) 683 err(1, "malloc"); 684 nargv[0][0] = '-'; 685 nargv[0][1] = *ap; 686 (void)strcpy(&nargv[0][2], *argv); /* XXX safe strcpy */ 687 ++argv; 688 ++nargv; 689 break; 690 default: 691 if (!flags) { 692 *p++ = '-'; 693 flags = 1; 694 } 695 *p++ = *ap; 696 break; 697 } 698 } 699 700 /* Terminate flags. */ 701 if (flags) { 702 *p = '\0'; 703 *nargv++ = flagsp; 704 } 705 706 /* Copy remaining arguments. */ 707 while ((*nargv++ = *argv++) != NULL) 708 ; 709 710 /* Update argument count. */ 711 *argcp = nargv - *argvp - 1; 712 } 713
Indexes created Mon Sep 22 10:09:38 GMT 2025