main.c revision 1.38
1 /* $NetBSD: main.c,v 1.38 2001/08/14 06:51:37 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 1.38 2001/08/14 06:51:37 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 gid_t egid; /* Retain tty privs for notification */ 84 int notify; /* notify operator flag */ 85 int blockswritten; /* number of blocks written on current tape */ 86 int tapeno; /* current tape number */ 87 int density; /* density in bytes/0.1" */ 88 int ntrec = NTREC; /* # tape blocks in each tape record */ 89 int cartridge; /* Assume non-cartridge tape */ 90 long dev_bsize = 1; /* recalculated below */ 91 long blocksperfile; /* output blocks per file */ 92 char *host; /* remote host (if any) */ 93 int readcache = -1; /* read cache size (in readblksize blks) */ 94 int readblksize = 32 * 1024; /* read block size */ 95 96 int main(int, char *[]); 97 static long numarg(char *, long, long); 98 static void obsolete(int *, char **[]); 99 static void usage(void); 100 101 int 102 main(int argc, char *argv[]) 103 { 104 ino_t ino; 105 int dirty; 106 struct dinode *dp; 107 struct fstab *dt; 108 struct statfs *mntinfo, fsbuf; 109 char *map; 110 int ch; 111 int i, anydirskipped, bflag = 0, Tflag = 0, Fflag = 0, honorlevel = 1; 112 ino_t maxino; 113 time_t tnow, date; 114 int dirc; 115 char *mountpoint; 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 /* Save setgid bit for use later */ 123 egid = getegid(); 124 setegid(getgid()); 125 126 tsize = 0; /* Default later, based on 'c' option for cart tapes */ 127 if ((tape = getenv("TAPE")) == NULL) 128 tape = _PATH_DEFTAPE; 129 dumpdates = _PATH_DUMPDATES; 130 temp = _PATH_DTMP; 131 strcpy(labelstr, "none"); /* XXX safe strcpy. */ 132 if (TP_BSIZE / DEV_BSIZE == 0 || TP_BSIZE % DEV_BSIZE != 0) 133 quit("TP_BSIZE must be a multiple of DEV_BSIZE\n"); 134 level = '0'; 135 136 if (argc < 2) 137 usage(); 138 139 obsolete(&argc, &argv); 140 while ((ch = getopt(argc, argv, 141 "0123456789B:b:cd:eFf:h:k:L:nr:s:ST:uWw")) != -1) 142 switch (ch) { 143 /* dump level */ 144 case '0': case '1': case '2': case '3': case '4': 145 case '5': case '6': case '7': case '8': case '9': 146 level = ch; 147 break; 148 149 case 'B': /* blocks per output file */ 150 blocksperfile = numarg("blocks per file", 1L, 0L); 151 break; 152 153 case 'b': /* blocks per tape write */ 154 ntrec = numarg("blocks per write", 1L, 1000L); 155 bflag = 1; 156 break; 157 158 case 'c': /* Tape is cart. not 9-track */ 159 cartridge = 1; 160 break; 161 162 case 'd': /* density, in bits per inch */ 163 density = numarg("density", 10L, 327670L) / 10; 164 if (density >= 625 && !bflag) 165 ntrec = HIGHDENSITYTREC; 166 break; 167 168 case 'e': /* eject full tapes */ 169 eflag = 1; 170 break; 171 172 case 'F': /* files-to-dump is an fs image */ 173 Fflag = 1; 174 break; 175 176 case 'f': /* output file */ 177 tape = optarg; 178 break; 179 180 case 'h': 181 honorlevel = numarg("honor level", 0L, 10L); 182 break; 183 184 case 'k': 185 readblksize = numarg("read block size", 0, 64) * 1024; 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_ABORT); 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(0); /* do nothing else */ 239 240 default: 241 usage(); 242 } 243 argc -= optind; 244 argv += optind; 245 246 if (argc < 1) { 247 (void)fprintf(stderr, 248 "Must specify disk or image, or file list\n"); 249 exit(X_ABORT); 250 } 251 252 253 /* 254 * determine if disk is a subdirectory, and setup appropriately 255 */ 256 getfstab(); /* /etc/fstab snarfed */ 257 disk = NULL; 258 mountpoint = NULL; 259 dirc = 0; 260 for (i = 0; i < argc; i++) { 261 struct stat sb; 262 263 if (lstat(argv[i], &sb) == -1) 264 quit("Cannot stat %s: %s\n", argv[i], strerror(errno)); 265 if (Fflag || S_ISCHR(sb.st_mode) || S_ISBLK(sb.st_mode)) { 266 disk = argv[i]; 267 if (Fflag && !S_ISREG(sb.st_mode)) 268 quit("%s is not a regular file", disk); 269 multicheck: 270 if (dirc != 0) 271 quit( 272 "Can't dump a disk or image at the same time as a file list\n"); 273 break; 274 } 275 if ((dt = fstabsearch(argv[i])) != NULL) { 276 disk = dt->fs_spec; 277 mountpoint = xstrdup(dt->fs_file); 278 goto multicheck; 279 } 280 if (statfs(argv[i], &fsbuf) == -1) 281 quit("Cannot statfs %s: %s\n", argv[i], 282 strerror(errno)); 283 disk = fsbuf.f_mntfromname; 284 if (strcmp(argv[i], fsbuf.f_mntonname) == 0) 285 goto multicheck; 286 if (mountpoint == NULL) { 287 mountpoint = xstrdup(fsbuf.f_mntonname); 288 if (uflag) { 289 msg("Ignoring u flag for subdir dump\n"); 290 uflag = 0; 291 } 292 if (level > '0') { 293 msg("Subdir dump is done at level 0\n"); 294 level = '0'; 295 } 296 msg("Dumping sub files/directories from %s\n", 297 mountpoint); 298 } else { 299 if (strcmp(mountpoint, fsbuf.f_mntonname) != 0) 300 quit("%s is not on %s\n", argv[i], mountpoint); 301 } 302 msg("Dumping file/directory %s\n", argv[i]); 303 dirc++; 304 } 305 if (mountpoint) 306 free(mountpoint); 307 308 if (dirc == 0) { 309 argv++; 310 if (argc != 1) { 311 (void)fprintf(stderr, "Excess arguments to dump:"); 312 while (--argc) 313 (void)fprintf(stderr, " %s", *argv++); 314 (void)fprintf(stderr, "\n"); 315 exit(X_ABORT); 316 } 317 } 318 if (Tflag && uflag) { 319 (void)fprintf(stderr, 320 "You cannot use the T and u flags together.\n"); 321 exit(X_ABORT); 322 } 323 if (strcmp(tape, "-") == 0) { 324 pipeout++; 325 tape = "standard output"; 326 } 327 328 if (blocksperfile) 329 blocksperfile = blocksperfile / ntrec * ntrec; /* round down */ 330 else { 331 /* 332 * Determine how to default tape size and density 333 * 334 * density tape size 335 * 9-track 1600 bpi (160 bytes/.1") 2300 ft. 336 * 9-track 6250 bpi (625 bytes/.1") 2300 ft. 337 * cartridge 8000 bpi (100 bytes/.1") 1700 ft. 338 * (450*4 - slop) 339 */ 340 if (density == 0) 341 density = cartridge ? 100 : 160; 342 if (tsize == 0) 343 tsize = cartridge ? 1700L*120L : 2300L*120L; 344 } 345 346 if (strchr(tape, ':')) { 347 host = tape; 348 tape = strchr(host, ':'); 349 *tape++ = '\0'; 350 #ifdef RDUMP 351 if (rmthost(host) == 0) 352 exit(X_ABORT); 353 #else 354 (void)fprintf(stderr, "remote dump not enabled\n"); 355 exit(X_ABORT); 356 #endif 357 } 358 359 if (signal(SIGHUP, SIG_IGN) != SIG_IGN) 360 signal(SIGHUP, sig); 361 if (signal(SIGTRAP, SIG_IGN) != SIG_IGN) 362 signal(SIGTRAP, sig); 363 if (signal(SIGFPE, SIG_IGN) != SIG_IGN) 364 signal(SIGFPE, sig); 365 if (signal(SIGBUS, SIG_IGN) != SIG_IGN) 366 signal(SIGBUS, sig); 367 if (signal(SIGSEGV, SIG_IGN) != SIG_IGN) 368 signal(SIGSEGV, sig); 369 if (signal(SIGTERM, SIG_IGN) != SIG_IGN) 370 signal(SIGTERM, sig); 371 if (signal(SIGINT, interrupt) == SIG_IGN) 372 signal(SIGINT, SIG_IGN); 373 374 set_operators(); /* /etc/group snarfed */ 375 376 /* 377 * disk can be either the full special file name, or 378 * the file system name. 379 */ 380 mountpoint = NULL; 381 if ((dt = fstabsearch(disk)) != NULL) { 382 disk = rawname(dt->fs_spec); 383 mountpoint = dt->fs_file; 384 msg("Found %s on %s in %s\n", disk, mountpoint, _PATH_FSTAB); 385 } else if ((mntinfo = mntinfosearch(disk)) != NULL) { 386 disk = rawname(mntinfo->f_mntfromname); 387 mountpoint = mntinfo->f_mntonname; 388 msg("Found %s on %s in mount table\n", disk, mountpoint); 389 } 390 if (mountpoint != NULL) { 391 if (dirc != 0) 392 (void)snprintf(spcl.c_filesys, NAMELEN, 393 "a subset of %s", mountpoint); 394 else 395 (void)strncpy(spcl.c_filesys, mountpoint, NAMELEN); 396 } else if (Fflag) { 397 (void)strncpy(spcl.c_filesys, "a file system image", NAMELEN); 398 } else { 399 (void)strncpy(spcl.c_filesys, "an unlisted file system", 400 NAMELEN); 401 } 402 (void)strncpy(spcl.c_dev, disk, NAMELEN); 403 (void)strncpy(spcl.c_label, labelstr, sizeof(spcl.c_label) - 1); 404 (void)gethostname(spcl.c_host, NAMELEN); 405 spcl.c_host[sizeof(spcl.c_host) - 1] = '\0'; 406 407 if ((diskfd = open(disk, O_RDONLY)) < 0) { 408 msg("Cannot open %s\n", disk); 409 exit(X_ABORT); 410 } 411 sync(); 412 413 needswap = fs_read_sblock(sblock_buf); 414 415 spcl.c_level = iswap32(level - '0'); 416 spcl.c_type = iswap32(TS_TAPE); 417 spcl.c_date = iswap32(spcl.c_date); 418 spcl.c_ddate = iswap32(spcl.c_ddate); 419 if (!Tflag) 420 getdumptime(); /* /etc/dumpdates snarfed */ 421 422 date = iswap32(spcl.c_date); 423 msg("Date of this level %c dump: %s", level, 424 spcl.c_date == 0 ? "the epoch\n" : ctime(&date)); 425 date = iswap32(spcl.c_ddate); 426 msg("Date of last level %c dump: %s", lastlevel, 427 spcl.c_ddate == 0 ? "the epoch\n" : ctime(&date)); 428 msg("Dumping "); 429 if (dirc != 0) 430 msgtail("a subset of "); 431 msgtail("%s (%s) ", disk, spcl.c_filesys); 432 if (host) 433 msgtail("to %s on host %s\n", tape, host); 434 else 435 msgtail("to %s\n", tape); 436 msg("Label: %s\n", labelstr); 437 438 ufsib = fs_parametrize(); 439 440 dev_bshift = ffs(dev_bsize) - 1; 441 if (dev_bsize != (1 << dev_bshift)) 442 quit("dev_bsize (%ld) is not a power of 2", dev_bsize); 443 tp_bshift = ffs(TP_BSIZE) - 1; 444 if (TP_BSIZE != (1 << tp_bshift)) 445 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE); 446 maxino = fs_maxino(); 447 mapsize = roundup(howmany(maxino, NBBY), TP_BSIZE); 448 usedinomap = (char *)xcalloc((unsigned) mapsize, sizeof(char)); 449 dumpdirmap = (char *)xcalloc((unsigned) mapsize, sizeof(char)); 450 dumpinomap = (char *)xcalloc((unsigned) mapsize, sizeof(char)); 451 tapesize = 3 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1); 452 453 nonodump = iswap32(spcl.c_level) < honorlevel; 454 455 initcache(readcache, readblksize); 456 457 (void)signal(SIGINFO, statussig); 458 459 msg("mapping (Pass I) [regular files]\n"); 460 anydirskipped = mapfiles(maxino, &tapesize, mountpoint, 461 (dirc ? argv : NULL)); 462 463 msg("mapping (Pass II) [directories]\n"); 464 while (anydirskipped) { 465 anydirskipped = mapdirs(maxino, &tapesize); 466 } 467 468 if (pipeout) { 469 tapesize += 10; /* 10 trailer blocks */ 470 msg("estimated %ld tape blocks.\n", tapesize); 471 } else { 472 double fetapes; 473 474 if (blocksperfile) 475 fetapes = (double) tapesize / blocksperfile; 476 else if (cartridge) { 477 /* Estimate number of tapes, assuming streaming stops at 478 the end of each block written, and not in mid-block. 479 Assume no erroneous blocks; this can be compensated 480 for with an artificially low tape size. */ 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) /* streaming-stops per block */ 488 * 15.48 /* 0.1" / streaming-stop */ 489 ) * (1.0 / tsize ); /* tape / 0.1" */ 490 } else { 491 /* Estimate number of tapes, for old fashioned 9-track 492 tape */ 493 int tenthsperirg = (density == 625) ? 3 : 7; 494 fetapes = 495 ( tapesize /* blocks */ 496 * TP_BSIZE /* bytes / block */ 497 * (1.0/density) /* 0.1" / byte */ 498 + 499 tapesize /* blocks */ 500 * (1.0/ntrec) /* IRG's / block */ 501 * tenthsperirg /* 0.1" / IRG */ 502 ) * (1.0 / tsize ); /* tape / 0.1" */ 503 } 504 etapes = fetapes; /* truncating assignment */ 505 etapes++; 506 /* count the dumped inodes map on each additional tape */ 507 tapesize += (etapes - 1) * 508 (howmany(mapsize * sizeof(char), TP_BSIZE) + 1); 509 tapesize += etapes + 10; /* headers + 10 trailer blks */ 510 msg("estimated %ld tape blocks on %3.2f tape(s).\n", 511 tapesize, fetapes); 512 } 513 /* 514 * If the user only wants an estimate of the number of 515 * tapes, exit now. 516 */ 517 if (just_estimate) 518 exit(0); 519 520 /* 521 * Allocate tape buffer. 522 */ 523 if (!alloctape()) 524 quit("can't allocate tape buffers - try a smaller blocking factor.\n"); 525 526 startnewtape(1); 527 (void)time((time_t *)&(tstart_writing)); 528 xferrate = 0; 529 dumpmap(usedinomap, TS_CLRI, maxino - 1); 530 531 msg("dumping (Pass III) [directories]\n"); 532 dirty = 0; /* XXX just to get gcc to shut up */ 533 for (map = dumpdirmap, ino = 1; ino < maxino; ino++) { 534 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */ 535 dirty = *map++; 536 else 537 dirty >>= 1; 538 if ((dirty & 1) == 0) 539 continue; 540 /* 541 * Skip directory inodes deleted and maybe reallocated 542 */ 543 dp = getino(ino); 544 if ((dp->di_mode & IFMT) != IFDIR) 545 continue; 546 (void)dumpino(dp, ino); 547 } 548 549 msg("dumping (Pass IV) [regular files]\n"); 550 for (map = dumpinomap, ino = 1; ino < maxino; ino++) { 551 int mode; 552 553 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */ 554 dirty = *map++; 555 else 556 dirty >>= 1; 557 if ((dirty & 1) == 0) 558 continue; 559 /* 560 * Skip inodes deleted and reallocated as directories. 561 */ 562 dp = getino(ino); 563 mode = dp->di_mode & IFMT; 564 if (mode == IFDIR) 565 continue; 566 (void)dumpino(dp, ino); 567 } 568 569 spcl.c_type = iswap32(TS_END); 570 for (i = 0; i < ntrec; i++) 571 writeheader(maxino - 1); 572 if (pipeout) 573 msg("%d tape blocks\n",iswap32(spcl.c_tapea)); 574 else 575 msg("%d tape blocks on %d volume%s\n", 576 iswap32(spcl.c_tapea), iswap32(spcl.c_volume), 577 (iswap32(spcl.c_volume) == 1) ? "" : "s"); 578 tnow = do_stats(); 579 date = iswap32(spcl.c_date); 580 msg("Date of this level %c dump: %s", level, 581 spcl.c_date == 0 ? "the epoch\n" : ctime(&date)); 582 msg("Date this dump completed: %s", ctime(&tnow)); 583 msg("Average transfer rate: %d KB/s\n", xferrate / tapeno); 584 putdumptime(); 585 trewind(0); 586 broadcast("DUMP IS DONE!\7\7\n"); 587 msg("DUMP IS DONE\n"); 588 Exit(X_FINOK); 589 /* NOTREACHED */ 590 exit(X_FINOK); /* XXX: to satisfy gcc */ 591 } 592 593 static void 594 usage(void) 595 { 596 597 (void)fprintf(stderr, "%s\n%s\n%s\n%s\n", 598 "usage: dump [-0123456789ceFnu] [-B records] [-b blocksize] [-d density]", 599 " [-f file] [-h level] [-k read block size] [-L label]", 600 " [-r read cache size] [-s feet] [-T date] file system", 601 " dump [-W | -w]"); 602 exit(1); 603 } 604 605 /* 606 * Pick up a numeric argument. It must be nonnegative and in the given 607 * range (except that a vmax of 0 means unlimited). 608 */ 609 static long 610 numarg(char *meaning, long vmin, long vmax) 611 { 612 char *p; 613 long val; 614 615 val = strtol(optarg, &p, 10); 616 if (*p) 617 errx(1, "illegal %s -- %s", meaning, optarg); 618 if (val < vmin || (vmax && val > vmax)) 619 errx(1, "%s must be between %ld and %ld", meaning, vmin, vmax); 620 return (val); 621 } 622 623 void 624 sig(int signo) 625 { 626 627 switch(signo) { 628 case SIGALRM: 629 case SIGBUS: 630 case SIGFPE: 631 case SIGHUP: 632 case SIGTERM: 633 case SIGTRAP: 634 if (pipeout) 635 quit("Signal on pipe: cannot recover\n"); 636 msg("Rewriting attempted as response to signal %s.\n", sys_siglist[signo]); 637 (void)fflush(stderr); 638 (void)fflush(stdout); 639 close_rewind(); 640 exit(X_REWRITE); 641 /* NOTREACHED */ 642 case SIGSEGV: 643 msg("SIGSEGV: ABORTING!\n"); 644 (void)signal(SIGSEGV, SIG_DFL); 645 (void)kill(0, SIGSEGV); 646 /* NOTREACHED */ 647 } 648 } 649 650 char * 651 rawname(char *cp) 652 { 653 static char rawbuf[MAXPATHLEN]; 654 char *dp = strrchr(cp, '/'); 655 656 if (dp == NULL) 657 return (NULL); 658 *dp = '\0'; 659 (void)snprintf(rawbuf, sizeof rawbuf, "%s/r%s", cp, dp + 1); 660 *dp = '/'; 661 return (rawbuf); 662 } 663 664 /* 665 * obsolete -- 666 * Change set of key letters and ordered arguments into something 667 * getopt(3) will like. 668 */ 669 static void 670 obsolete(int *argcp, char **argvp[]) 671 { 672 int argc, flags; 673 char *ap, **argv, *flagsp, **nargv, *p; 674 675 /* Setup. */ 676 argv = *argvp; 677 argc = *argcp; 678 679 /* Return if no arguments or first argument has leading dash. */ 680 ap = argv[1]; 681 if (argc == 1 || *ap == '-') 682 return; 683 684 /* Allocate space for new arguments. */ 685 *argvp = nargv = xmalloc((argc + 1) * sizeof(char *)); 686 p = flagsp = xmalloc(strlen(ap) + 2); 687 688 *nargv++ = *argv; 689 argv += 2; 690 691 for (flags = 0; *ap; ++ap) { 692 switch (*ap) { 693 case 'B': 694 case 'b': 695 case 'd': 696 case 'f': 697 case 'h': 698 case 's': 699 case 'T': 700 if (*argv == NULL) { 701 warnx("option requires an argument -- %c", *ap); 702 usage(); 703 } 704 nargv[0] = xmalloc(strlen(*argv) + 2 + 1); 705 nargv[0][0] = '-'; 706 nargv[0][1] = *ap; 707 (void)strcpy(&nargv[0][2], *argv); /* XXX safe strcpy */ 708 ++argv; 709 ++nargv; 710 break; 711 default: 712 if (!flags) { 713 *p++ = '-'; 714 flags = 1; 715 } 716 *p++ = *ap; 717 break; 718 } 719 } 720 721 /* Terminate flags. */ 722 if (flags) { 723 *p = '\0'; 724 *nargv++ = flagsp; 725 } 726 727 /* Copy remaining arguments. */ 728 while ((*nargv++ = *argv++) != NULL) 729 ; 730 731 /* Update argument count. */ 732 *argcp = nargv - *argvp - 1; 733 } 734 735 736 void * 737 xcalloc(size_t number, size_t size) 738 { 739 void *p; 740 741 p = calloc(number, size); 742 if (p == NULL) 743 quit("%s\n", strerror(errno)); 744 return (p); 745 } 746 747 void * 748 xmalloc(size_t size) 749 { 750 void *p; 751 752 p = malloc(size); 753 if (p == NULL) 754 quit("%s\n", strerror(errno)); 755 return (p); 756 } 757 758 char * 759 xstrdup(const char *str) 760 { 761 char *p; 762 763 p = strdup(str); 764 if (p == NULL) 765 quit("%s\n", strerror(errno)); 766 return (p); 767 } 768
Indexes created Mon Sep 22 10:09:38 GMT 2025