options.c revision 1.78
1 /* $NetBSD: options.c,v 1.78 2004/09/26 23:46:00 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 1992 Keith Muller. 5 * Copyright (c) 1992, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * Keith Muller of the University of California, San Diego. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. 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 #if HAVE_NBTOOL_CONFIG_H 37 #include "nbtool_config.h" 38 #endif 39 40 #include <sys/cdefs.h> 41 #if !defined(lint) 42 #if 0 43 static char sccsid[] = "@(#)options.c 8.2 (Berkeley) 4/18/94"; 44 #else 45 __RCSID("$NetBSD: options.c,v 1.78 2004/09/26 23:46:00 christos Exp $"); 46 #endif 47 #endif /* not lint */ 48 49 #include <sys/types.h> 50 #include <sys/time.h> 51 #include <sys/stat.h> 52 #include <sys/mtio.h> 53 #include <sys/param.h> 54 #include <ctype.h> 55 #include <errno.h> 56 #if HAVE_NBTOOL_CONFIG_H 57 #include "compat_getopt.h" 58 #else 59 #include <getopt.h> 60 #endif 61 #include <limits.h> 62 #include <stdio.h> 63 #include <stdlib.h> 64 #include <string.h> 65 #include <unistd.h> 66 #include <paths.h> 67 #include "pax.h" 68 #include "options.h" 69 #include "cpio.h" 70 #include "tar.h" 71 #include "extern.h" 72 #ifndef SMALL 73 #include "mtree.h" 74 #endif /* SMALL */ 75 76 /* 77 * Routines which handle command line options 78 */ 79 80 static int nopids; /* tar mode: suppress "pids" for -p option */ 81 static char flgch[] = FLGCH; /* list of all possible flags (pax) */ 82 static OPLIST *ophead = NULL; /* head for format specific options -x */ 83 static OPLIST *optail = NULL; /* option tail */ 84 85 static int no_op(void); 86 static void printflg(unsigned int); 87 static int c_frmt(const void *, const void *); 88 static off_t str_offt(char *); 89 static char *getline(FILE *fp); 90 static void pax_options(int, char **); 91 static void pax_usage(void); 92 static void tar_options(int, char **); 93 static void tar_usage(void); 94 static void cpio_options(int, char **); 95 static void cpio_usage(void); 96 97 /* errors from getline */ 98 #define GETLINE_FILE_CORRUPT 1 99 #define GETLINE_OUT_OF_MEM 2 100 static int getline_error; 101 102 #define BZIP2_CMD "bzip2" /* command to run as bzip2 */ 103 #define GZIP_CMD "gzip" /* command to run as gzip */ 104 #define COMPRESS_CMD "compress" /* command to run as compress */ 105 106 /* 107 * Long options. 108 */ 109 #define OPT_USE_COMPRESS_PROGRAM 0 110 #define OPT_CHECKPOINT 1 111 #define OPT_UNLINK 2 112 #define OPT_HELP 3 113 #define OPT_ATIME_PRESERVE 4 114 #define OPT_IGNORE_FAILED_READ 5 115 #define OPT_REMOVE_FILES 6 116 #define OPT_NULL 7 117 #define OPT_TOTALS 8 118 #define OPT_VERSION 9 119 #define OPT_EXCLUDE 10 120 #define OPT_BLOCK_COMPRESS 11 121 #define OPT_NORECURSE 12 122 #define OPT_FORCE_LOCAL 13 123 #define OPT_INSECURE 14 124 #define OPT_STRICT 15 125 #define OPT_SPARSE 16 126 127 /* 128 * Format specific routine table - MUST BE IN SORTED ORDER BY NAME 129 * (see pax.h for description of each function) 130 * 131 * name, blksz, hdsz, udev, hlk, blkagn, inhead, id, st_read, 132 * read, end_read, st_write, write, end_write, trail, 133 * subtrail, rd_data, wr_data, options 134 */ 135 136 FSUB fsub[] = { 137 /* 0: OLD BINARY CPIO */ 138 { "bcpio", 5120, sizeof(HD_BCPIO), 1, 0, 0, 1, bcpio_id, cpio_strd, 139 bcpio_rd, bcpio_endrd, cpio_stwr, bcpio_wr, cpio_endwr, NULL, 140 cpio_subtrail, rd_wrfile, wr_rdfile, bad_opt }, 141 142 /* 1: OLD OCTAL CHARACTER CPIO */ 143 { "cpio", 5120, sizeof(HD_CPIO), 1, 0, 0, 1, cpio_id, cpio_strd, 144 cpio_rd, cpio_endrd, cpio_stwr, cpio_wr, cpio_endwr, NULL, 145 cpio_subtrail, rd_wrfile, wr_rdfile, bad_opt }, 146 147 /* 2: SVR4 HEX CPIO */ 148 { "sv4cpio", 5120, sizeof(HD_VCPIO), 1, 0, 0, 1, vcpio_id, cpio_strd, 149 vcpio_rd, vcpio_endrd, cpio_stwr, vcpio_wr, cpio_endwr, NULL, 150 cpio_subtrail, rd_wrfile, wr_rdfile, bad_opt }, 151 152 /* 3: SVR4 HEX CPIO WITH CRC */ 153 { "sv4crc", 5120, sizeof(HD_VCPIO), 1, 0, 0, 1, crc_id, crc_strd, 154 vcpio_rd, vcpio_endrd, crc_stwr, vcpio_wr, cpio_endwr, NULL, 155 cpio_subtrail, rd_wrfile, wr_rdfile, bad_opt }, 156 157 /* 4: OLD TAR */ 158 { "tar", 10240, BLKMULT, 0, 1, BLKMULT, 0, tar_id, no_op, 159 tar_rd, tar_endrd, no_op, tar_wr, tar_endwr, tar_trail, 160 NULL, rd_wrfile, wr_rdfile, tar_opt }, 161 162 /* 5: POSIX USTAR */ 163 { "ustar", 10240, BLKMULT, 0, 1, BLKMULT, 0, ustar_id, ustar_strd, 164 ustar_rd, tar_endrd, ustar_stwr, ustar_wr, tar_endwr, tar_trail, 165 NULL, rd_wrfile, wr_rdfile, bad_opt } 166 }; 167 #define F_BCPIO 0 /* old binary cpio format */ 168 #define F_CPIO 1 /* old octal character cpio format */ 169 #define F_SV4CPIO 2 /* SVR4 hex cpio format */ 170 #define F_SV4CRC 3 /* SVR4 hex with crc cpio format */ 171 #define F_TAR 4 /* old V7 UNIX tar format */ 172 #define F_USTAR 5 /* ustar format */ 173 #define DEFLT F_USTAR /* default write format from list above */ 174 175 /* 176 * ford is the archive search order used by get_arc() to determine what kind 177 * of archive we are dealing with. This helps to properly id archive formats 178 * some formats may be subsets of others.... 179 */ 180 int ford[] = {F_USTAR, F_TAR, F_SV4CRC, F_SV4CPIO, F_CPIO, F_BCPIO, -1}; 181 182 /* 183 * filename record separator 184 */ 185 int sep = '\n'; 186 187 /* 188 * options() 189 * figure out if we are pax, tar or cpio. Call the appropriate options 190 * parser 191 */ 192 193 void 194 options(int argc, char **argv) 195 { 196 197 /* 198 * Are we acting like pax, tar or cpio (based on argv[0]) 199 */ 200 if ((argv0 = strrchr(argv[0], '/')) != NULL) 201 argv0++; 202 else 203 argv0 = argv[0]; 204 205 if (strcmp(NM_TAR, argv0) == 0) 206 tar_options(argc, argv); 207 else if (strcmp(NM_CPIO, argv0) == 0) 208 cpio_options(argc, argv); 209 else { 210 argv0 = NM_PAX; 211 pax_options(argc, argv); 212 } 213 } 214 215 struct option pax_longopts[] = { 216 { "insecure", no_argument, 0, 217 OPT_INSECURE }, 218 { "force-local", no_argument, 0, 219 OPT_FORCE_LOCAL }, 220 }; 221 222 /* 223 * pax_options() 224 * look at the user specified flags. set globals as required and check if 225 * the user specified a legal set of flags. If not, complain and exit 226 */ 227 228 static void 229 pax_options(int argc, char **argv) 230 { 231 int c; 232 int i; 233 unsigned int flg = 0; 234 unsigned int bflg = 0; 235 char *pt; 236 FSUB tmp; 237 238 /* 239 * process option flags 240 */ 241 while ((c = getopt_long(argc, argv, 242 "0ab:cdf:ijklno:p:rs:tuvwx:zAB:DE:G:HLMN:OPT:U:XYZ", 243 pax_longopts, NULL)) != -1) { 244 switch (c) { 245 case '0': 246 sep = '\0'; 247 break; 248 case 'a': 249 /* 250 * append 251 */ 252 flg |= AF; 253 break; 254 case 'b': 255 /* 256 * specify blocksize 257 */ 258 flg |= BF; 259 if ((wrblksz = (int)str_offt(optarg)) <= 0) { 260 tty_warn(1, "Invalid block size %s", optarg); 261 pax_usage(); 262 } 263 break; 264 case 'c': 265 /* 266 * inverse match on patterns 267 */ 268 cflag = 1; 269 flg |= CF; 270 break; 271 case 'd': 272 /* 273 * match only dir on extract, not the subtree at dir 274 */ 275 dflag = 1; 276 flg |= DF; 277 break; 278 case 'f': 279 /* 280 * filename where the archive is stored 281 */ 282 arcname = optarg; 283 flg |= FF; 284 break; 285 case 'i': 286 /* 287 * interactive file rename 288 */ 289 iflag = 1; 290 flg |= IF; 291 break; 292 case 'j': 293 /* 294 * pass through bzip2 295 */ 296 jflag = 1; 297 gzip_program = BZIP2_CMD; 298 break; 299 case 'k': 300 /* 301 * do not clobber files that exist 302 */ 303 kflag = 1; 304 flg |= KF; 305 break; 306 case 'l': 307 /* 308 * try to link src to dest with copy (-rw) 309 */ 310 lflag = 1; 311 flg |= LF; 312 break; 313 case 'n': 314 /* 315 * select first match for a pattern only 316 */ 317 nflag = 1; 318 flg |= NF; 319 break; 320 case 'o': 321 /* 322 * pass format specific options 323 */ 324 flg |= OF; 325 if (opt_add(optarg) < 0) 326 pax_usage(); 327 break; 328 case 'p': 329 /* 330 * specify file characteristic options 331 */ 332 for (pt = optarg; *pt != '\0'; ++pt) { 333 switch(*pt) { 334 case 'a': 335 /* 336 * do not preserve access time 337 */ 338 patime = 0; 339 break; 340 case 'e': 341 /* 342 * preserve user id, group id, file 343 * mode, access/modification times 344 * and file flags. 345 */ 346 pids = 1; 347 pmode = 1; 348 patime = 1; 349 pmtime = 1; 350 pfflags = 1; 351 break; 352 #if 0 353 case 'f': 354 /* 355 * do not preserve file flags 356 */ 357 pfflags = 0; 358 break; 359 #endif 360 case 'm': 361 /* 362 * do not preserve modification time 363 */ 364 pmtime = 0; 365 break; 366 case 'o': 367 /* 368 * preserve uid/gid 369 */ 370 pids = 1; 371 break; 372 case 'p': 373 /* 374 * preserve file mode bits 375 */ 376 pmode = 1; 377 break; 378 default: 379 tty_warn(1, "Invalid -p string: %c", 380 *pt); 381 pax_usage(); 382 break; 383 } 384 } 385 flg |= PF; 386 break; 387 case 'r': 388 /* 389 * read the archive 390 */ 391 flg |= RF; 392 break; 393 case 's': 394 /* 395 * file name substitution name pattern 396 */ 397 if (rep_add(optarg) < 0) { 398 pax_usage(); 399 break; 400 } 401 flg |= SF; 402 break; 403 case 't': 404 /* 405 * preserve access time on filesystem nodes we read 406 */ 407 tflag = 1; 408 flg |= TF; 409 break; 410 case 'u': 411 /* 412 * ignore those older files 413 */ 414 uflag = 1; 415 flg |= UF; 416 break; 417 case 'v': 418 /* 419 * verbose operation mode 420 */ 421 vflag = 1; 422 flg |= VF; 423 break; 424 case 'w': 425 /* 426 * write an archive 427 */ 428 flg |= WF; 429 break; 430 case 'x': 431 /* 432 * specify an archive format on write 433 */ 434 tmp.name = optarg; 435 frmt = (FSUB *)bsearch((void *)&tmp, (void *)fsub, 436 sizeof(fsub)/sizeof(FSUB), sizeof(FSUB), c_frmt); 437 if (frmt != NULL) { 438 flg |= XF; 439 break; 440 } 441 tty_warn(1, "Unknown -x format: %s", optarg); 442 (void)fputs("pax: Known -x formats are:", stderr); 443 for (i = 0; i < (sizeof(fsub)/sizeof(FSUB)); ++i) 444 (void)fprintf(stderr, " %s", fsub[i].name); 445 (void)fputs("\n\n", stderr); 446 pax_usage(); 447 break; 448 case 'z': 449 /* 450 * use gzip. Non standard option. 451 */ 452 gzip_program = GZIP_CMD; 453 break; 454 case 'A': 455 Aflag = 1; 456 flg |= CAF; 457 break; 458 case 'B': 459 /* 460 * non-standard option on number of bytes written on a 461 * single archive volume. 462 */ 463 if ((wrlimit = str_offt(optarg)) <= 0) { 464 tty_warn(1, "Invalid write limit %s", optarg); 465 pax_usage(); 466 } 467 if (wrlimit % BLKMULT) { 468 tty_warn(1, 469 "Write limit is not a %d byte multiple", 470 BLKMULT); 471 pax_usage(); 472 } 473 flg |= CBF; 474 break; 475 case 'D': 476 /* 477 * On extraction check file inode change time before the 478 * modification of the file name. Non standard option. 479 */ 480 Dflag = 1; 481 flg |= CDF; 482 break; 483 case 'E': 484 /* 485 * non-standard limit on read faults 486 * 0 indicates stop after first error, values 487 * indicate a limit, "none" try forever 488 */ 489 flg |= CEF; 490 if (strcmp(none, optarg) == 0) 491 maxflt = -1; 492 else if ((maxflt = atoi(optarg)) < 0) { 493 tty_warn(1, 494 "Error count value must be positive"); 495 pax_usage(); 496 } 497 break; 498 case 'G': 499 /* 500 * non-standard option for selecting files within an 501 * archive by group (gid or name) 502 */ 503 if (grp_add(optarg) < 0) { 504 pax_usage(); 505 break; 506 } 507 flg |= CGF; 508 break; 509 case 'H': 510 /* 511 * follow command line symlinks only 512 */ 513 Hflag = 1; 514 flg |= CHF; 515 break; 516 case 'L': 517 /* 518 * follow symlinks 519 */ 520 Lflag = 1; 521 flg |= CLF; 522 break; 523 #ifdef SMALL 524 case 'M': 525 case 'N': 526 tty_warn(1, "Support for -%c is not compiled in", c); 527 exit(1); 528 #else /* !SMALL */ 529 case 'M': 530 /* 531 * Treat list of filenames on stdin as an 532 * mtree(8) specfile. Non standard option. 533 */ 534 Mflag = 1; 535 flg |= CMF; 536 break; 537 case 'N': 538 /* 539 * Use alternative directory for user db lookups. 540 */ 541 if (!setup_getid(optarg)) { 542 tty_warn(1, 543 "Unable to use user and group databases in `%s'", 544 optarg); 545 pax_usage(); 546 } 547 break; 548 #endif /* !SMALL */ 549 case 'O': 550 /* 551 * Force one volume. Non standard option. 552 */ 553 force_one_volume = 1; 554 break; 555 case 'P': 556 /* 557 * do NOT follow symlinks (default) 558 */ 559 Lflag = 0; 560 flg |= CPF; 561 break; 562 case 'T': 563 /* 564 * non-standard option for selecting files within an 565 * archive by modification time range (lower,upper) 566 */ 567 if (trng_add(optarg) < 0) { 568 pax_usage(); 569 break; 570 } 571 flg |= CTF; 572 break; 573 case 'U': 574 /* 575 * non-standard option for selecting files within an 576 * archive by user (uid or name) 577 */ 578 if (usr_add(optarg) < 0) { 579 pax_usage(); 580 break; 581 } 582 flg |= CUF; 583 break; 584 case 'X': 585 /* 586 * do not pass over mount points in the file system 587 */ 588 Xflag = 1; 589 flg |= CXF; 590 break; 591 case 'Y': 592 /* 593 * On extraction check file inode change time after the 594 * modification of the file name. Non standard option. 595 */ 596 Yflag = 1; 597 flg |= CYF; 598 break; 599 case 'Z': 600 /* 601 * On extraction check modification time after the 602 * modification of the file name. Non standard option. 603 */ 604 Zflag = 1; 605 flg |= CZF; 606 break; 607 case OPT_INSECURE: 608 secure = 0; 609 break; 610 case OPT_FORCE_LOCAL: 611 forcelocal = 0; 612 break; 613 case '?': 614 default: 615 pax_usage(); 616 break; 617 } 618 } 619 620 /* 621 * figure out the operation mode of pax read,write,extract,copy,append 622 * or list. check that we have not been given a bogus set of flags 623 * for the operation mode. 624 */ 625 if (ISLIST(flg)) { 626 act = LIST; 627 listf = stdout; 628 bflg = flg & BDLIST; 629 } else if (ISEXTRACT(flg)) { 630 act = EXTRACT; 631 bflg = flg & BDEXTR; 632 } else if (ISARCHIVE(flg)) { 633 act = ARCHIVE; 634 bflg = flg & BDARCH; 635 } else if (ISAPPND(flg)) { 636 act = APPND; 637 bflg = flg & BDARCH; 638 } else if (ISCOPY(flg)) { 639 act = COPY; 640 bflg = flg & BDCOPY; 641 } else 642 pax_usage(); 643 if (bflg) { 644 printflg(flg); 645 pax_usage(); 646 } 647 648 /* 649 * if we are writing (ARCHIVE) we use the default format if the user 650 * did not specify a format. when we write during an APPEND, we will 651 * adopt the format of the existing archive if none was supplied. 652 */ 653 if (!(flg & XF) && (act == ARCHIVE)) 654 frmt = &(fsub[DEFLT]); 655 656 /* 657 * process the args as they are interpreted by the operation mode 658 */ 659 switch (act) { 660 case LIST: 661 case EXTRACT: 662 for (; optind < argc; optind++) 663 if (pat_add(argv[optind], NULL) < 0) 664 pax_usage(); 665 break; 666 case COPY: 667 if (optind >= argc) { 668 tty_warn(0, "Destination directory was not supplied"); 669 pax_usage(); 670 } 671 --argc; 672 dirptr = argv[argc]; 673 if (mkpath(dirptr) < 0) 674 pax_usage(); 675 /* FALLTHROUGH */ 676 case ARCHIVE: 677 case APPND: 678 for (; optind < argc; optind++) 679 if (ftree_add(argv[optind], 0) < 0) 680 pax_usage(); 681 /* 682 * no read errors allowed on updates/append operation! 683 */ 684 maxflt = 0; 685 break; 686 } 687 } 688 689 690 /* 691 * tar_options() 692 * look at the user specified flags. set globals as required and check if 693 * the user specified a legal set of flags. If not, complain and exit 694 */ 695 696 struct option tar_longopts[] = { 697 { "block-size", required_argument, 0, 'b' }, 698 { "bunzip2", no_argument, 0, 'j' }, 699 { "bzip2", no_argument, 0, 'j' }, 700 { "create", no_argument, 0, 'c' }, /* F */ 701 /* -e -- no corresponding long option */ 702 { "file", required_argument, 0, 'f' }, 703 { "dereference", no_argument, 0, 'h' }, 704 { "keep-old-files", no_argument, 0, 'k' }, 705 { "one-file-system", no_argument, 0, 'l' }, 706 { "modification-time", no_argument, 0, 'm' }, 707 { "old-archive", no_argument, 0, 'o' }, 708 { "portability", no_argument, 0, 'o' }, 709 { "same-permissions", no_argument, 0, 'p' }, 710 { "preserve-permissions", no_argument, 0, 'p' }, 711 { "preserve", no_argument, 0, 'p' }, 712 { "fast-read", no_argument, 0, 'q' }, 713 { "append", no_argument, 0, 'r' }, /* F */ 714 { "update", no_argument, 0, 'u' }, /* F */ 715 { "list", no_argument, 0, 't' }, /* F */ 716 { "verbose", no_argument, 0, 'v' }, 717 { "interactive", no_argument, 0, 'w' }, 718 { "confirmation", no_argument, 0, 'w' }, 719 { "extract", no_argument, 0, 'x' }, /* F */ 720 { "get", no_argument, 0, 'x' }, /* F */ 721 { "gzip", no_argument, 0, 'z' }, 722 { "gunzip", no_argument, 0, 'z' }, 723 { "read-full-blocks", no_argument, 0, 'B' }, 724 { "directory", required_argument, 0, 'C' }, 725 { "to-stdout", no_argument, 0, 'O' }, 726 { "absolute-paths", no_argument, 0, 'P' }, 727 { "files-from", required_argument, 0, 'T' }, 728 { "exclude-from", required_argument, 0, 'X' }, 729 { "compress", no_argument, 0, 'Z' }, 730 { "uncompress", no_argument, 0, 'Z' }, 731 { "strict", no_argument, 0, 732 OPT_STRICT }, 733 { "atime-preserve", no_argument, 0, 734 OPT_ATIME_PRESERVE }, 735 { "unlink", no_argument, 0, 736 OPT_UNLINK }, 737 { "use-compress-program", required_argument, 0, 738 OPT_USE_COMPRESS_PROGRAM }, 739 { "force-local", no_argument, 0, 740 OPT_FORCE_LOCAL }, 741 { "insecure", no_argument, 0, 742 OPT_INSECURE }, 743 { "exclude", required_argument, 0, 744 OPT_EXCLUDE }, 745 { "sparse", no_argument, 0, 'S' }, 746 #if 0 /* Not implemented */ 747 { "catenate", no_argument, 0, 'A' }, /* F */ 748 { "concatenate", no_argument, 0, 'A' }, /* F */ 749 { "diff", no_argument, 0, 'd' }, /* F */ 750 { "compare", no_argument, 0, 'd' }, /* F */ 751 { "checkpoint", no_argument, 0, 752 OPT_CHECKPOINT }, 753 { "help", no_argument, 0, 754 OPT_HELP }, 755 { "info-script", required_argument, 0, 'F' }, 756 { "new-volume-script", required_argument, 0, 'F' }, 757 { "incremental", no_argument, 0, 'G' }, 758 { "listed-incremental", required_argument, 0, 'g' }, 759 { "ignore-zeros", no_argument, 0, 'i' }, 760 { "ignore-failed-read", no_argument, 0, 761 OPT_IGNORE_FAILED_READ }, 762 { "starting-file", no_argument, 0, 'K' }, 763 { "tape-length", required_argument, 0, 'L' }, 764 { "multi-volume", no_argument, 0, 'M' }, 765 { "after-date", required_argument, 0, 'N' }, 766 { "newer", required_argument, 0, 'N' }, 767 { "record-number", no_argument, 0, 'R' }, 768 { "remove-files", no_argument, 0, 769 OPT_REMOVE_FILES }, 770 { "same-order", no_argument, 0, 's' }, 771 { "preserve-order", no_argument, 0, 's' }, 772 { "null", no_argument, 0, 773 OPT_NULL }, 774 { "totals", no_argument, 0, 775 OPT_TOTALS }, 776 { "volume-name", required_argument, 0, 'V' }, 777 { "label", required_argument, 0, 'V' }, 778 { "version", no_argument, 0, 779 OPT_VERSION }, 780 { "verify", no_argument, 0, 'W' }, 781 { "block-compress", no_argument, 0, 782 OPT_BLOCK_COMPRESS }, 783 { "norecurse", no_argument, 0, 784 OPT_NORECURSE }, 785 #endif 786 { 0, 0, 0, 0 }, 787 }; 788 789 static void 790 tar_options(int argc, char **argv) 791 { 792 int c; 793 int fstdin = 0; 794 int Oflag = 0; 795 int nincfiles = 0; 796 int incfiles_max = 0; 797 struct incfile { 798 char *file; 799 char *dir; 800 }; 801 struct incfile *incfiles = NULL; 802 803 /* 804 * Set default values. 805 */ 806 rmleadslash = 1; 807 is_gnutar = 1; 808 809 /* 810 * process option flags 811 */ 812 while ((c = getoldopt(argc, argv, 813 "+b:cef:hjklmopqrs:tuvwxzBC:HI:OPST:X:Z014578", 814 tar_longopts, NULL)) 815 != -1) { 816 switch(c) { 817 case 'b': 818 /* 819 * specify blocksize in 512-byte blocks 820 */ 821 if ((wrblksz = (int)str_offt(optarg)) <= 0) { 822 tty_warn(1, "Invalid block size %s", optarg); 823 tar_usage(); 824 } 825 wrblksz *= 512; /* XXX - check for int oflow */ 826 break; 827 case 'c': 828 /* 829 * create an archive 830 */ 831 act = ARCHIVE; 832 break; 833 case 'e': 834 /* 835 * stop after first error 836 */ 837 maxflt = 0; 838 break; 839 case 'f': 840 /* 841 * filename where the archive is stored 842 */ 843 if ((optarg[0] == '-') && (optarg[1]== '\0')) { 844 /* 845 * treat a - as stdin 846 */ 847 fstdin = 1; 848 arcname = NULL; 849 break; 850 } 851 fstdin = 0; 852 arcname = optarg; 853 break; 854 case 'h': 855 /* 856 * follow symlinks 857 */ 858 Lflag = 1; 859 break; 860 case 'j': 861 /* 862 * pass through bzip2. not a standard option 863 */ 864 jflag = 1; 865 gzip_program = BZIP2_CMD; 866 break; 867 case 'k': 868 /* 869 * do not clobber files that exist 870 */ 871 kflag = 1; 872 break; 873 case 'l': 874 /* 875 * do not pass over mount points in the file system 876 */ 877 Xflag = 1; 878 break; 879 case 'm': 880 /* 881 * do not preserve modification time 882 */ 883 pmtime = 0; 884 break; 885 case 'o': 886 /* 887 * This option does several things based on whether 888 * this is a create or extract operation. 889 */ 890 if (act == ARCHIVE) { 891 /* GNU tar: write V7 format archives. */ 892 Oflag = 1; 893 /* 4.2BSD: don't add directory entries. */ 894 if (opt_add("write_opt=nodir") < 0) 895 tar_usage(); 896 897 } else { 898 /* SUS: don't preserve owner/group. */ 899 pids = 0; 900 nopids = 1; 901 } 902 break; 903 case 'O': 904 Oflag = 1; 905 break; 906 case 'p': 907 /* 908 * preserve user id, group id, file 909 * mode, access/modification times 910 */ 911 if (!nopids) 912 pids = 1; 913 pmode = 1; 914 patime = 1; 915 pmtime = 1; 916 break; 917 case 'q': 918 /* 919 * select first match for a pattern only 920 */ 921 nflag = 1; 922 break; 923 case 'r': 924 case 'u': 925 /* 926 * append to the archive 927 */ 928 act = APPND; 929 break; 930 case 's': 931 /* 932 * file name substitution name pattern 933 */ 934 if (rep_add(optarg) < 0) { 935 tar_usage(); 936 break; 937 } 938 break; 939 case 't': 940 /* 941 * list contents of the tape 942 */ 943 act = LIST; 944 break; 945 case 'v': 946 /* 947 * verbose operation mode 948 */ 949 vflag = 1; 950 break; 951 case 'w': 952 /* 953 * interactive file rename 954 */ 955 iflag = 1; 956 break; 957 case 'x': 958 /* 959 * extract an archive, preserving mode, 960 * and mtime if possible. 961 */ 962 act = EXTRACT; 963 pmtime = 1; 964 break; 965 case 'z': 966 /* 967 * use gzip. Non standard option. 968 */ 969 zflag = 1; 970 gzip_program = GZIP_CMD; 971 break; 972 case 'B': 973 /* 974 * Nothing to do here, this is pax default 975 */ 976 break; 977 case 'C': 978 chdname = optarg; 979 break; 980 case 'H': 981 /* 982 * follow command line symlinks only 983 */ 984 Hflag = 1; 985 break; 986 case 'I': 987 case 'T': 988 if (++nincfiles > incfiles_max) { 989 incfiles_max = nincfiles + 3; 990 incfiles = realloc(incfiles, 991 sizeof(*incfiles) * incfiles_max); 992 if (incfiles == NULL) { 993 tty_warn(0, "Unable to allocate space " 994 "for option list"); 995 exit(1); 996 } 997 } 998 incfiles[nincfiles - 1].file = optarg; 999 incfiles[nincfiles - 1].dir = chdname; 1000 break; 1001 case 'P': 1002 /* 1003 * do not remove leading '/' from pathnames 1004 */ 1005 rmleadslash = 0; 1006 Aflag = 1; 1007 break; 1008 case 'S': 1009 /* do nothing; we already generate sparse files */ 1010 break; 1011 case 'X': 1012 /* 1013 * GNU tar compat: exclude the files listed in optarg 1014 */ 1015 if (tar_gnutar_X_compat(optarg) != 0) 1016 tar_usage(); 1017 break; 1018 case 'Z': 1019 /* 1020 * use compress. 1021 */ 1022 zflag = 1; 1023 gzip_program = COMPRESS_CMD; 1024 break; 1025 case '0': 1026 arcname = DEV_0; 1027 break; 1028 case '1': 1029 arcname = DEV_1; 1030 break; 1031 case '4': 1032 arcname = DEV_4; 1033 break; 1034 case '5': 1035 arcname = DEV_5; 1036 break; 1037 case '7': 1038 arcname = DEV_7; 1039 break; 1040 case '8': 1041 arcname = DEV_8; 1042 break; 1043 case OPT_ATIME_PRESERVE: 1044 patime = 1; 1045 break; 1046 case OPT_UNLINK: 1047 /* Just ignore -- we always unlink first. */ 1048 break; 1049 case OPT_USE_COMPRESS_PROGRAM: 1050 zflag = 1; 1051 gzip_program = optarg; 1052 break; 1053 case OPT_FORCE_LOCAL: 1054 forcelocal = 1; 1055 break; 1056 case OPT_INSECURE: 1057 secure = 0; 1058 break; 1059 case OPT_STRICT: 1060 /* disable gnu extensions */ 1061 is_gnutar = 0; 1062 break; 1063 case OPT_EXCLUDE: 1064 if (tar_gnutar_minus_minus_exclude(optarg) != 0) 1065 tar_usage(); 1066 break; 1067 default: 1068 tar_usage(); 1069 break; 1070 } 1071 } 1072 argc -= optind; 1073 argv += optind; 1074 1075 /* Tar requires an action. */ 1076 if (act == ERROR) 1077 tar_usage(); 1078 1079 /* Traditional tar behaviour (pax uses stderr unless in list mode) */ 1080 if (fstdin == 1 && act == ARCHIVE) 1081 listf = stderr; 1082 else 1083 listf = stdout; 1084 1085 /* Traditional tar behaviour (pax wants to read file list from stdin) */ 1086 if ((act == ARCHIVE || act == APPND) && argc == 0 && nincfiles == 0) 1087 exit(0); 1088 /* 1089 * if we are writing (ARCHIVE) specify tar, otherwise run like pax 1090 * (unless -o specified) 1091 */ 1092 if (act == ARCHIVE || act == APPND) 1093 frmt = &(fsub[Oflag ? F_TAR : F_USTAR]); 1094 else if (Oflag) { 1095 if (act == EXTRACT) 1096 to_stdout = 1; 1097 else { 1098 tty_warn(1, "The -O/-o options are only valid when " 1099 "writing or extracting an archive"); 1100 tar_usage(); 1101 } 1102 } 1103 1104 /* 1105 * process the args as they are interpreted by the operation mode 1106 */ 1107 switch (act) { 1108 case LIST: 1109 case EXTRACT: 1110 default: 1111 { 1112 int sawpat = 0; 1113 int dirisnext = 0; 1114 char *file, *dir; 1115 1116 while (nincfiles || *argv != NULL) { 1117 /* 1118 * If we queued up any include files, 1119 * pull them in now. Otherwise, check 1120 * for -I and -C positional flags. 1121 * Anything else must be a file to 1122 * extract. 1123 */ 1124 if (nincfiles) { 1125 file = incfiles->file; 1126 dir = incfiles->dir; 1127 incfiles++; 1128 nincfiles--; 1129 } else if (strcmp(*argv, "-I") == 0) { 1130 if (*++argv == NULL) 1131 break; 1132 file = *argv++; 1133 dir = chdname; 1134 } else 1135 file = NULL; 1136 if (file != NULL) { 1137 FILE *fp; 1138 char *str; 1139 1140 if (strcmp(file, "-") == 0) 1141 fp = stdin; 1142 else if ((fp = fopen(file, "r")) == NULL) { 1143 tty_warn(1, "Unable to open file '%s' for read", file); 1144 tar_usage(); 1145 } 1146 while ((str = getline(fp)) != NULL) { 1147 if (dirisnext) { 1148 dir = str; 1149 dirisnext = 0; 1150 continue; 1151 } 1152 if (strcmp(str, "-C") == 0) { 1153 dirisnext = 1; 1154 continue; 1155 } 1156 if (pat_add(str, dir) < 0) 1157 tar_usage(); 1158 sawpat = 1; 1159 } 1160 /* Bomb if given -C w/out a dir. */ 1161 if (dirisnext) 1162 tar_usage(); 1163 if (strcmp(file, "-") != 0) 1164 fclose(fp); 1165 if (getline_error) { 1166 tty_warn(1, "Problem with file '%s'", file); 1167 tar_usage(); 1168 } 1169 } else if (strcmp(*argv, "-C") == 0) { 1170 if (*++argv == NULL) 1171 break; 1172 chdname = *argv++; 1173 } else if (pat_add(*argv++, chdname) < 0) 1174 tar_usage(); 1175 else 1176 sawpat = 1; 1177 } 1178 /* 1179 * if patterns were added, we are doing chdir() 1180 * on a file-by-file basis, else, just one 1181 * global chdir (if any) after opening input. 1182 */ 1183 if (sawpat > 0) 1184 chdname = NULL; 1185 } 1186 break; 1187 case ARCHIVE: 1188 case APPND: 1189 if (chdname != NULL) { /* initial chdir() */ 1190 if (ftree_add(chdname, 1) < 0) 1191 tar_usage(); 1192 } 1193 1194 while (nincfiles || *argv != NULL) { 1195 char *file, *dir; 1196 1197 /* 1198 * If we queued up any include files, pull them in 1199 * now. Otherwise, check for -I and -C positional 1200 * flags. Anything else must be a file to include 1201 * in the archive. 1202 */ 1203 if (nincfiles) { 1204 file = incfiles->file; 1205 dir = incfiles->dir; 1206 incfiles++; 1207 nincfiles--; 1208 } else if (strcmp(*argv, "-I") == 0) { 1209 if (*++argv == NULL) 1210 break; 1211 file = *argv++; 1212 dir = NULL; 1213 } else 1214 file = NULL; 1215 if (file != NULL) { 1216 FILE *fp; 1217 char *str; 1218 int dirisnext = 0; 1219 1220 /* Set directory if needed */ 1221 if (dir) { 1222 if (ftree_add(dir, 1) < 0) 1223 tar_usage(); 1224 } 1225 1226 if (strcmp(file, "-") == 0) 1227 fp = stdin; 1228 else if ((fp = fopen(file, "r")) == NULL) { 1229 tty_warn(1, "Unable to open file '%s' for read", file); 1230 tar_usage(); 1231 } 1232 while ((str = getline(fp)) != NULL) { 1233 if (dirisnext) { 1234 if (ftree_add(str, 1) < 0) 1235 tar_usage(); 1236 dirisnext = 0; 1237 continue; 1238 } 1239 if (strcmp(str, "-C") == 0) { 1240 dirisnext = 1; 1241 continue; 1242 } 1243 if (ftree_add(str, 0) < 0) 1244 tar_usage(); 1245 } 1246 /* Bomb if given -C w/out a dir. */ 1247 if (dirisnext) 1248 tar_usage(); 1249 if (strcmp(file, "-") != 0) 1250 fclose(fp); 1251 if (getline_error) { 1252 tty_warn(1, "Problem with file '%s'", 1253 file); 1254 tar_usage(); 1255 } 1256 } else if (strcmp(*argv, "-C") == 0) { 1257 if (*++argv == NULL) 1258 break; 1259 if (ftree_add(*argv++, 1) < 0) 1260 tar_usage(); 1261 } else if (ftree_add(*argv++, 0) < 0) 1262 tar_usage(); 1263 } 1264 /* 1265 * no read errors allowed on updates/append operation! 1266 */ 1267 maxflt = 0; 1268 break; 1269 } 1270 if (!fstdin && ((arcname == (char *)NULL) || (*arcname == '\0'))) { 1271 arcname = getenv("TAPE"); 1272 if ((arcname == NULL) || (*arcname == '\0')) 1273 arcname = _PATH_DEFTAPE; 1274 } 1275 } 1276 1277 int 1278 mkpath(path) 1279 char *path; 1280 { 1281 struct stat sb; 1282 char *slash; 1283 int done = 0; 1284 1285 slash = path; 1286 1287 while (!done) { 1288 slash += strspn(slash, "/"); 1289 slash += strcspn(slash, "/"); 1290 1291 done = (*slash == '\0'); 1292 *slash = '\0'; 1293 1294 if (stat(path, &sb)) { 1295 if (errno != ENOENT || mkdir(path, 0777)) { 1296 tty_warn(1, "%s", path); 1297 return (-1); 1298 } 1299 } else if (!S_ISDIR(sb.st_mode)) { 1300 syswarn(1, ENOTDIR, "%s", path); 1301 return (-1); 1302 } 1303 1304 if (!done) 1305 *slash = '/'; 1306 } 1307 1308 return (0); 1309 } 1310 1311 1312 struct option cpio_longopts[] = { 1313 { "reset-access-time", no_argument, 0, 'a' }, 1314 { "make-directories", no_argument, 0, 'd' }, 1315 { "nonmatching", no_argument, 0, 'f' }, 1316 { "extract", no_argument, 0, 'i' }, 1317 { "link", no_argument, 0, 'l' }, 1318 { "preserve-modification-time", no_argument, 0, 'm' }, 1319 { "create", no_argument, 0, 'o' }, 1320 { "pass-through", no_argument, 0, 'p' }, 1321 { "rename", no_argument, 0, 'r' }, 1322 { "list", no_argument, 0, 't' }, 1323 { "unconditional", no_argument, 0, 'u' }, 1324 { "verbose", no_argument, 0, 'v' }, 1325 { "append", no_argument, 0, 'A' }, 1326 { "pattern-file", required_argument, 0, 'E' }, 1327 { "file", required_argument, 0, 'F' }, 1328 { "force-local", no_argument, 0, 1329 OPT_FORCE_LOCAL }, 1330 { "format", required_argument, 0, 'H' }, 1331 { "dereference", no_argument, 0, 'L' }, 1332 { "swap-halfwords", no_argument, 0, 'S' }, 1333 { "insecure", no_argument, 0, 1334 OPT_INSECURE }, 1335 { "sparse", no_argument, 0, 1336 OPT_SPARSE }, 1337 1338 #ifdef notyet 1339 /* Not implemented */ 1340 { "null", no_argument, 0, '0' }, 1341 { "swap", no_argument, 0, 'b' }, 1342 { "numeric-uid-gid", no_argument, 0, 'n' }, 1343 { "swap-bytes", no_argument, 0, 's' }, 1344 { "message", required_argument, 0, 'M' }, 1345 { "owner", required_argument, 0 'R' }, 1346 { "dot", no_argument, 0, 'V' }, 1347 { "block-size", required_argument, 0, 1348 OPT_BLOCK_SIZE }, 1349 { "no-absolute-pathnames", no_argument, 0, 1350 OPT_NO_ABSOLUTE_PATHNAMES }, 1351 { "no-preserve-owner", no_argument, 0, 1352 OPT_NO_PRESERVE_OWNER }, 1353 { "only-verify-crc", no_argument, 0, 1354 OPT_ONLY_VERIFY_CRC }, 1355 { "rsh-command", required_argument, 0, 1356 OPT_RSH_COMMAND }, 1357 { "version", no_argument, 0, 1358 OPT_VERSION }, 1359 #endif 1360 }; 1361 1362 /* 1363 * cpio_options() 1364 * look at the user specified flags. set globals as required and check if 1365 * the user specified a legal set of flags. If not, complain and exit 1366 */ 1367 1368 static void 1369 cpio_options(int argc, char **argv) 1370 { 1371 FSUB tmp; 1372 unsigned int flg = 0; 1373 unsigned int bflg = 0; 1374 int c, i; 1375 FILE *fp; 1376 char *str; 1377 1378 uflag = 1; 1379 kflag = 1; 1380 pids = 1; 1381 pmode = 1; 1382 pmtime = 0; 1383 arcname = NULL; 1384 dflag = 1; 1385 nodirs = 1; 1386 /* 1387 * process option flags 1388 */ 1389 while ((c = getoldopt(argc, argv, 1390 "+abcdfiklmoprstuvzABC:E:F:H:I:LM:O:R:SVZ6", 1391 cpio_longopts, NULL)) != -1) { 1392 switch(c) { 1393 case 'a': 1394 /* 1395 * preserve access time on filesystem nodes we read 1396 */ 1397 tflag = 1; 1398 flg |= TF; 1399 break; 1400 #ifdef notyet 1401 case 'b': 1402 /* 1403 * swap bytes and half-words when reading data 1404 */ 1405 break; 1406 #endif 1407 case 'c': 1408 /* 1409 * ASCII cpio header 1410 */ 1411 frmt = &fsub[F_SV4CPIO]; 1412 break; 1413 case 'd': 1414 /* 1415 * create directories as needed 1416 * pax does this by default .. 1417 */ 1418 nodirs = 0; 1419 flg |= RF; 1420 break; 1421 case 'f': 1422 /* 1423 * inverse match on patterns 1424 */ 1425 cflag = 1; 1426 flg |= CF; 1427 break; 1428 case 'i': 1429 /* 1430 * read the archive 1431 */ 1432 act = EXTRACT; 1433 flg |= RF; 1434 break; 1435 #ifdef notyet 1436 case 'k': 1437 break; 1438 #endif 1439 case 'l': 1440 /* 1441 * try to link src to dest with copy (-rw) 1442 */ 1443 lflag = 1; 1444 flg |= LF; 1445 break; 1446 case 'm': 1447 /* 1448 * preserve mtime 1449 */ 1450 flg |= PF; 1451 pmtime = 1; 1452 break; 1453 case 'o': 1454 /* 1455 * write an archive 1456 */ 1457 act = ARCHIVE; 1458 frmt = &(fsub[F_SV4CRC]); 1459 flg |= WF; 1460 break; 1461 case 'p': 1462 /* 1463 * cpio -p is like pax -rw 1464 */ 1465 act = COPY; 1466 flg |= RF | WF; 1467 break; 1468 case 'r': 1469 /* 1470 * interactive file rename 1471 */ 1472 iflag = 1; 1473 flg |= IF; 1474 break; 1475 #ifdef notyet 1476 case 's': 1477 /* 1478 * swap bytes after reading data 1479 */ 1480 break; 1481 #endif 1482 case 't': 1483 /* 1484 * list contents of archive 1485 */ 1486 act = LIST; 1487 listf = stdout; 1488 break; 1489 case 'u': 1490 /* 1491 * don't ignore those older files 1492 */ 1493 uflag = 0; 1494 kflag = 0; 1495 flg |= UF; 1496 break; 1497 case 'v': 1498 /* 1499 * verbose operation mode 1500 */ 1501 vflag = 1; 1502 flg |= VF; 1503 break; 1504 case 'z': 1505 /* 1506 * use gzip. Non standard option. 1507 */ 1508 gzip_program = GZIP_CMD; 1509 break; 1510 case 'A': 1511 /* 1512 * append to an archive 1513 */ 1514 act = APPND; 1515 flg |= AF; 1516 break; 1517 case 'B': 1518 /* 1519 * set blocksize to 5120 1520 */ 1521 blksz = 5120; 1522 break; 1523 case 'C': 1524 /* 1525 * specify blocksize 1526 */ 1527 if ((blksz = (int)str_offt(optarg)) <= 0) { 1528 tty_warn(1, "Invalid block size %s", optarg); 1529 cpio_usage(); 1530 } 1531 break; 1532 case 'E': 1533 /* 1534 * file with patterns to extract or list 1535 */ 1536 if ((fp = fopen(optarg, "r")) == NULL) { 1537 tty_warn(1, "Unable to open file '%s' for read", 1538 optarg); 1539 cpio_usage(); 1540 } 1541 while ((str = getline(fp)) != NULL) { 1542 pat_add(str, NULL); 1543 } 1544 fclose(fp); 1545 if (getline_error) { 1546 tty_warn(1, "Problem with file '%s'", optarg); 1547 cpio_usage(); 1548 } 1549 break; 1550 case 'H': 1551 /* 1552 * specify an archive format on write 1553 */ 1554 tmp.name = optarg; 1555 frmt = (FSUB *)bsearch((void *)&tmp, (void *)fsub, 1556 sizeof(fsub)/sizeof(FSUB), sizeof(FSUB), c_frmt); 1557 if (frmt != NULL) { 1558 flg |= XF; 1559 break; 1560 } 1561 tty_warn(1, "Unknown -H format: %s", optarg); 1562 (void)fputs("cpio: Known -H formats are:", stderr); 1563 for (i = 0; i < (sizeof(fsub)/sizeof(FSUB)); ++i) 1564 (void)fprintf(stderr, " %s", fsub[i].name); 1565 (void)fputs("\n\n", stderr); 1566 cpio_usage(); 1567 break; 1568 case 'I': 1569 case 'O': 1570 /* 1571 * filename where the archive is stored 1572 */ 1573 if ((optarg[0] == '-') && (optarg[1]== '\0')) { 1574 /* 1575 * treat a - as stdin 1576 */ 1577 arcname = NULL; 1578 break; 1579 } 1580 arcname = optarg; 1581 break; 1582 case 'L': 1583 /* 1584 * follow symlinks 1585 */ 1586 Lflag = 1; 1587 flg |= CLF; 1588 break; 1589 #ifdef notyet 1590 case 'M': 1591 arg = optarg; 1592 break; 1593 case 'R': 1594 arg = optarg; 1595 break; 1596 #endif 1597 case 'S': 1598 /* 1599 * swap halfwords after reading data 1600 */ 1601 cpio_swp_head = 1; 1602 break; 1603 #ifdef notyet 1604 case 'V': 1605 break; 1606 #endif 1607 case 'Z': 1608 /* 1609 * use compress. Non standard option. 1610 */ 1611 gzip_program = COMPRESS_CMD; 1612 break; 1613 case '6': 1614 /* 1615 * process Version 6 cpio format 1616 */ 1617 frmt = &(fsub[F_BCPIO]); 1618 case OPT_FORCE_LOCAL: 1619 forcelocal = 1; 1620 break; 1621 case OPT_INSECURE: 1622 secure = 0; 1623 break; 1624 1625 case OPT_SPARSE: 1626 /* do nothing; we already generate sparse files */ 1627 break; 1628 default: 1629 cpio_usage(); 1630 break; 1631 } 1632 } 1633 1634 /* 1635 * figure out the operation mode of cpio. check that we have not been 1636 * given a bogus set of flags for the operation mode. 1637 */ 1638 if (ISLIST(flg)) { 1639 act = LIST; 1640 bflg = flg & BDLIST; 1641 } else if (ISEXTRACT(flg)) { 1642 act = EXTRACT; 1643 bflg = flg & BDEXTR; 1644 } else if (ISARCHIVE(flg)) { 1645 act = ARCHIVE; 1646 bflg = flg & BDARCH; 1647 } else if (ISAPPND(flg)) { 1648 act = APPND; 1649 bflg = flg & BDARCH; 1650 } else if (ISCOPY(flg)) { 1651 act = COPY; 1652 bflg = flg & BDCOPY; 1653 } else 1654 cpio_usage(); 1655 if (bflg) { 1656 cpio_usage(); 1657 } 1658 1659 /* 1660 * if we are writing (ARCHIVE) we use the default format if the user 1661 * did not specify a format. when we write during an APPEND, we will 1662 * adopt the format of the existing archive if none was supplied. 1663 */ 1664 if (!(flg & XF) && (act == ARCHIVE)) 1665 frmt = &(fsub[F_BCPIO]); 1666 1667 /* 1668 * process the args as they are interpreted by the operation mode 1669 */ 1670 switch (act) { 1671 case LIST: 1672 case EXTRACT: 1673 for (; optind < argc; optind++) 1674 if (pat_add(argv[optind], 0) < 0) 1675 cpio_usage(); 1676 break; 1677 case COPY: 1678 if (optind >= argc) { 1679 tty_warn(0, "Destination directory was not supplied"); 1680 cpio_usage(); 1681 } 1682 --argc; 1683 dirptr = argv[argc]; 1684 /* FALLTHROUGH */ 1685 case ARCHIVE: 1686 case APPND: 1687 if (argc != optind) { 1688 for (; optind < argc; optind++) 1689 if (ftree_add(argv[optind], 0) < 0) 1690 cpio_usage(); 1691 break; 1692 } 1693 /* 1694 * no read errors allowed on updates/append operation! 1695 */ 1696 maxflt = 0; 1697 while ((str = getline(stdin)) != NULL) { 1698 ftree_add(str, 0); 1699 } 1700 if (getline_error) { 1701 tty_warn(1, "Problem while reading stdin"); 1702 cpio_usage(); 1703 } 1704 break; 1705 default: 1706 cpio_usage(); 1707 break; 1708 } 1709 } 1710 1711 /* 1712 * printflg() 1713 * print out those invalid flag sets found to the user 1714 */ 1715 1716 static void 1717 printflg(unsigned int flg) 1718 { 1719 int nxt; 1720 1721 (void)fprintf(stderr,"%s: Invalid combination of options:", argv0); 1722 while ((nxt = ffs(flg)) != 0) { 1723 flg &= ~(1 << (nxt - 1)); 1724 (void)fprintf(stderr, " -%c", flgch[nxt - 1]); 1725 } 1726 (void)putc('\n', stderr); 1727 } 1728 1729 /* 1730 * c_frmt() 1731 * comparison routine used by bsearch to find the format specified 1732 * by the user 1733 */ 1734 1735 static int 1736 c_frmt(const void *a, const void *b) 1737 { 1738 return(strcmp(((const FSUB *)a)->name, ((const FSUB *)b)->name)); 1739 } 1740 1741 /* 1742 * opt_next() 1743 * called by format specific options routines to get each format specific 1744 * flag and value specified with -o 1745 * Return: 1746 * pointer to next OPLIST entry or NULL (end of list). 1747 */ 1748 1749 OPLIST * 1750 opt_next(void) 1751 { 1752 OPLIST *opt; 1753 1754 if ((opt = ophead) != NULL) 1755 ophead = ophead->fow; 1756 return(opt); 1757 } 1758 1759 /* 1760 * bad_opt() 1761 * generic routine used to complain about a format specific options 1762 * when the format does not support options. 1763 */ 1764 1765 int 1766 bad_opt(void) 1767 { 1768 OPLIST *opt; 1769 1770 if (ophead == NULL) 1771 return(0); 1772 /* 1773 * print all we were given 1774 */ 1775 tty_warn(1," These format options are not supported for %s", 1776 frmt->name); 1777 while ((opt = opt_next()) != NULL) 1778 (void)fprintf(stderr, "\t%s = %s\n", opt->name, opt->value); 1779 if (strcmp(NM_TAR, argv0) == 0) 1780 tar_usage(); 1781 else if (strcmp(NM_CPIO, argv0) == 0) 1782 cpio_usage(); 1783 else 1784 pax_usage(); 1785 return(0); 1786 } 1787 1788 /* 1789 * opt_add() 1790 * breaks the value supplied to -o into a option name and value. options 1791 * are given to -o in the form -o name-value,name=value 1792 * multiple -o may be specified. 1793 * Return: 1794 * 0 if format in name=value format, -1 if -o is passed junk 1795 */ 1796 1797 int 1798 opt_add(const char *str) 1799 { 1800 OPLIST *opt; 1801 char *frpt; 1802 char *pt; 1803 char *endpt; 1804 char *dstr; 1805 1806 if ((str == NULL) || (*str == '\0')) { 1807 tty_warn(0, "Invalid option name"); 1808 return(-1); 1809 } 1810 if ((dstr = strdup(str)) == NULL) { 1811 tty_warn(0, "Unable to allocate space for option list"); 1812 return(-1); 1813 } 1814 frpt = endpt = dstr; 1815 1816 /* 1817 * break into name and values pieces and stuff each one into a 1818 * OPLIST structure. When we know the format, the format specific 1819 * option function will go through this list 1820 */ 1821 while ((frpt != NULL) && (*frpt != '\0')) { 1822 if ((endpt = strchr(frpt, ',')) != NULL) 1823 *endpt = '\0'; 1824 if ((pt = strchr(frpt, '=')) == NULL) { 1825 tty_warn(0, "Invalid options format"); 1826 free(dstr); 1827 return(-1); 1828 } 1829 if ((opt = (OPLIST *)malloc(sizeof(OPLIST))) == NULL) { 1830 tty_warn(0, "Unable to allocate space for option list"); 1831 free(dstr); 1832 return(-1); 1833 } 1834 *pt++ = '\0'; 1835 opt->name = frpt; 1836 opt->value = pt; 1837 opt->fow = NULL; 1838 if (endpt != NULL) 1839 frpt = endpt + 1; 1840 else 1841 frpt = NULL; 1842 if (ophead == NULL) { 1843 optail = ophead = opt; 1844 continue; 1845 } 1846 optail->fow = opt; 1847 optail = opt; 1848 } 1849 return(0); 1850 } 1851 1852 /* 1853 * str_offt() 1854 * Convert an expression of the following forms to an off_t > 0. 1855 * 1) A positive decimal number. 1856 * 2) A positive decimal number followed by a b (mult by 512). 1857 * 3) A positive decimal number followed by a k (mult by 1024). 1858 * 4) A positive decimal number followed by a m (mult by 512). 1859 * 5) A positive decimal number followed by a w (mult by sizeof int) 1860 * 6) Two or more positive decimal numbers (with/without k,b or w). 1861 * separated by x (also * for backwards compatibility), specifying 1862 * the product of the indicated values. 1863 * Return: 1864 * 0 for an error, a positive value o.w. 1865 */ 1866 1867 static off_t 1868 str_offt(char *val) 1869 { 1870 char *expr; 1871 off_t num, t; 1872 1873 num = STRTOOFFT(val, &expr, 0); 1874 if ((num == OFFT_MAX) || (num <= 0) || (expr == val)) 1875 return(0); 1876 1877 switch(*expr) { 1878 case 'b': 1879 t = num; 1880 num *= 512; 1881 if (t > num) 1882 return(0); 1883 ++expr; 1884 break; 1885 case 'k': 1886 t = num; 1887 num *= 1024; 1888 if (t > num) 1889 return(0); 1890 ++expr; 1891 break; 1892 case 'm': 1893 t = num; 1894 num *= 1048576; 1895 if (t > num) 1896 return(0); 1897 ++expr; 1898 break; 1899 case 'w': 1900 t = num; 1901 num *= sizeof(int); 1902 if (t > num) 1903 return(0); 1904 ++expr; 1905 break; 1906 } 1907 1908 switch(*expr) { 1909 case '\0': 1910 break; 1911 case '*': 1912 case 'x': 1913 t = num; 1914 num *= str_offt(expr + 1); 1915 if (t > num) 1916 return(0); 1917 break; 1918 default: 1919 return(0); 1920 } 1921 return(num); 1922 } 1923 1924 char * 1925 getline(FILE *f) 1926 { 1927 char *name, *temp; 1928 size_t len; 1929 1930 name = fgetln(f, &len); 1931 if (!name) { 1932 getline_error = ferror(f) ? GETLINE_FILE_CORRUPT : 0; 1933 return(0); 1934 } 1935 if (name[len-1] != '\n') 1936 len++; 1937 temp = malloc(len); 1938 if (!temp) { 1939 getline_error = GETLINE_OUT_OF_MEM; 1940 return(0); 1941 } 1942 memcpy(temp, name, len-1); 1943 temp[len-1] = 0; 1944 return(temp); 1945 } 1946 1947 /* 1948 * no_op() 1949 * for those option functions where the archive format has nothing to do. 1950 * Return: 1951 * 0 1952 */ 1953 1954 static int 1955 no_op(void) 1956 { 1957 return(0); 1958 } 1959 1960 /* 1961 * pax_usage() 1962 * print the usage summary to the user 1963 */ 1964 1965 void 1966 pax_usage(void) 1967 { 1968 fprintf(stderr, 1969 "usage: pax [-cdjnvzO] [-E limit] [-f archive] [-N dbdir] [-s replstr] ...\n" 1970 " [-U user] ... [-G group] ... [-T [from_date][,to_date]] ...\n" 1971 " [pattern ...]\n"); 1972 fprintf(stderr, 1973 " pax -r [-cdijknuvzADOYZ] [-E limit] [-f archive] [-N dbdir]\n" 1974 " [-o options] ... [-p string] ... [-s replstr] ... [-U user] ...\n" 1975 " [-G group] ... [-T [from_date][,to_date]] ... [pattern ...]\n"); 1976 fprintf(stderr, 1977 " pax -w [-dijtuvzAHLMOPX] [-b blocksize] [[-a] [-f archive]] [-x format]\n" 1978 " [-B bytes] [-N dbdir] [-o options] ... [-s replstr] ...\n" 1979 " [-U user] ... [-G group] ...\n" 1980 " [-T [from_date][,to_date][/[c][m]]] ... [file ...]\n"); 1981 fprintf(stderr, 1982 " pax -r -w [-dijklntuvzADHLMOPXYZ] [-N dbdir] [-p string] ...\n" 1983 " [-s replstr] ... [-U user] ... [-G group] ...\n" 1984 " [-T [from_date][,to_date][/[c][m]]] ... [file ...] directory\n"); 1985 exit(1); 1986 /* NOTREACHED */ 1987 } 1988 1989 /* 1990 * tar_usage() 1991 * print the usage summary to the user 1992 */ 1993 1994 void 1995 tar_usage(void) 1996 { 1997 (void)fputs("usage: tar [-]{crtux}[-befhjlmopqvwzHLOPXZ014578] [archive] " 1998 "[blocksize]\n" 1999 " [-C directory] [-T file] [-s replstr] " 2000 "[file ...]\n", stderr); 2001 exit(1); 2002 /* NOTREACHED */ 2003 } 2004 2005 /* 2006 * cpio_usage() 2007 * print the usage summary to the user 2008 */ 2009 2010 void 2011 cpio_usage(void) 2012 { 2013 2014 (void)fputs("usage: cpio -o [-aABcLvzZ] [-C bytes] [-F archive] " 2015 "[-H format] [-O archive]\n" 2016 " < name-list [> archive]\n" 2017 " cpio -i [-bBcdfmrsStuvzZ6] [-C bytes] [-E file] " 2018 "[-F archive] [-H format] \n" 2019 " [-I archive] " 2020 "[pattern ...] [< archive]\n" 2021 " cpio -p [-adlLmuv] destination-directory " 2022 "< name-list\n", stderr); 2023 exit(1); 2024 /* NOTREACHED */ 2025 } 2026
Indexes created Fri Sep 26 08:10:20 GMT 2025