options.c revision 1.110
1 /* $NetBSD: options.c,v 1.110 2011/06/18 23:07:04 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 1.110 2011/06/18 23:07:04 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/param.h> 53 #include <ctype.h> 54 #include <errno.h> 55 #if HAVE_NBTOOL_CONFIG_H 56 #include "compat_getopt.h" 57 #else 58 #include <getopt.h> 59 #endif 60 #include <limits.h> 61 #include <stdio.h> 62 #include <stdlib.h> 63 #include <string.h> 64 #include <unistd.h> 65 #include <paths.h> 66 #include "pax.h" 67 #include "options.h" 68 #include "cpio.h" 69 #include "tar.h" 70 #include "extern.h" 71 #ifndef SMALL 72 #include "mtree.h" 73 #endif /* SMALL */ 74 75 /* 76 * Routines which handle command line options 77 */ 78 79 static int nopids; /* tar mode: suppress "pids" for -p option */ 80 static char flgch[] = FLGCH; /* list of all possible flags (pax) */ 81 static OPLIST *ophead = NULL; /* head for format specific options -x */ 82 static OPLIST *optail = NULL; /* option tail */ 83 84 static int no_op(void); 85 static void printflg(unsigned int); 86 static int c_frmt(const void *, const void *); 87 static off_t str_offt(char *); 88 static char *get_line(FILE *fp); 89 static void pax_options(int, char **); 90 static void pax_usage(void); 91 static void tar_options(int, char **); 92 static void tar_usage(void); 93 #ifndef NO_CPIO 94 static void cpio_options(int, char **); 95 static void cpio_usage(void); 96 #endif 97 98 /* errors from get_line */ 99 #define GETLINE_FILE_CORRUPT 1 100 #define GETLINE_OUT_OF_MEM 2 101 static int get_line_error; 102 103 #define BZIP2_CMD "bzip2" /* command to run as bzip2 */ 104 #define GZIP_CMD "gzip" /* command to run as gzip */ 105 #define XZ_CMD "xz" /* command to run as xz */ 106 #define COMPRESS_CMD "compress" /* command to run as compress */ 107 108 /* 109 * Long options. 110 */ 111 #define OPT_USE_COMPRESS_PROGRAM 0 112 #define OPT_CHECKPOINT 1 113 #define OPT_UNLINK 2 114 #define OPT_HELP 3 115 #define OPT_ATIME_PRESERVE 4 116 #define OPT_IGNORE_FAILED_READ 5 117 #define OPT_REMOVE_FILES 6 118 #define OPT_NULL 7 119 #define OPT_TOTALS 8 120 #define OPT_VERSION 9 121 #define OPT_EXCLUDE 10 122 #define OPT_BLOCK_COMPRESS 11 123 #define OPT_NORECURSE 12 124 #define OPT_FORCE_LOCAL 13 125 #define OPT_INSECURE 14 126 #define OPT_STRICT 15 127 #define OPT_SPARSE 16 128 #define OPT_XZ 17 129 #if !HAVE_NBTOOL_CONFIG_H 130 #define OPT_CHROOT 18 131 #endif 132 133 /* 134 * Format specific routine table - MUST BE IN SORTED ORDER BY NAME 135 * (see pax.h for description of each function) 136 * 137 * name, blksz, hdsz, udev, hlk, blkagn, inhead, id, st_read, 138 * read, end_read, st_write, write, end_write, trail, 139 * subtrail, rd_data, wr_data, options 140 */ 141 142 FSUB fsub[] = { 143 #ifndef NO_CPIO 144 /* 0: OLD BINARY CPIO */ 145 { "bcpio", 5120, sizeof(HD_BCPIO), 1, 0, 0, 1, bcpio_id, cpio_strd, 146 bcpio_rd, bcpio_endrd, cpio_stwr, bcpio_wr, cpio_endwr, NULL, 147 cpio_subtrail, rd_wrfile, wr_rdfile, bad_opt }, 148 149 /* 1: OLD OCTAL CHARACTER CPIO */ 150 { "cpio", 5120, sizeof(HD_CPIO), 1, 0, 0, 1, cpio_id, cpio_strd, 151 cpio_rd, cpio_endrd, cpio_stwr, cpio_wr, cpio_endwr, NULL, 152 cpio_subtrail, rd_wrfile, wr_rdfile, bad_opt }, 153 154 /* 2: SVR4 HEX CPIO */ 155 { "sv4cpio", 5120, sizeof(HD_VCPIO), 1, 0, 0, 1, vcpio_id, cpio_strd, 156 vcpio_rd, vcpio_endrd, cpio_stwr, vcpio_wr, cpio_endwr, NULL, 157 cpio_subtrail, rd_wrfile, wr_rdfile, bad_opt }, 158 159 /* 3: SVR4 HEX CPIO WITH CRC */ 160 { "sv4crc", 5120, sizeof(HD_VCPIO), 1, 0, 0, 1, crc_id, crc_strd, 161 vcpio_rd, vcpio_endrd, crc_stwr, vcpio_wr, cpio_endwr, NULL, 162 cpio_subtrail, rd_wrfile, wr_rdfile, bad_opt }, 163 #endif 164 /* 4: OLD TAR */ 165 { "tar", 10240, BLKMULT, 0, 1, BLKMULT, 0, tar_id, no_op, 166 tar_rd, tar_endrd, no_op, tar_wr, tar_endwr, tar_trail, 167 NULL, rd_wrfile, wr_rdfile, tar_opt }, 168 169 /* 5: POSIX USTAR */ 170 { "ustar", 10240, BLKMULT, 0, 1, BLKMULT, 0, ustar_id, ustar_strd, 171 ustar_rd, tar_endrd, ustar_stwr, ustar_wr, tar_endwr, tar_trail, 172 NULL, rd_wrfile, wr_rdfile, bad_opt } 173 }; 174 #ifndef NO_CPIO 175 #define F_BCPIO 0 /* old binary cpio format */ 176 #define F_CPIO 1 /* old octal character cpio format */ 177 #define F_SV4CPIO 2 /* SVR4 hex cpio format */ 178 #define F_SV4CRC 3 /* SVR4 hex with crc cpio format */ 179 #define F_TAR 4 /* old V7 UNIX tar format */ 180 #define F_USTAR 5 /* ustar format */ 181 #else 182 #define F_TAR 0 /* old V7 UNIX tar format */ 183 #define F_USTAR 1 /* ustar format */ 184 #endif 185 #define DEFLT F_USTAR /* default write format from list above */ 186 187 /* 188 * ford is the archive search order used by get_arc() to determine what kind 189 * of archive we are dealing with. This helps to properly id archive formats 190 * some formats may be subsets of others.... 191 */ 192 int ford[] = {F_USTAR, F_TAR, 193 #ifndef NO_CPIO 194 F_SV4CRC, F_SV4CPIO, F_CPIO, F_BCPIO, 195 #endif 196 -1}; 197 198 /* 199 * filename record separator 200 */ 201 int sep = '\n'; 202 203 /* 204 * Do we have -C anywhere? 205 */ 206 int havechd = 0; 207 208 /* 209 * options() 210 * figure out if we are pax, tar or cpio. Call the appropriate options 211 * parser 212 */ 213 214 void 215 options(int argc, char **argv) 216 { 217 218 /* 219 * Are we acting like pax, tar or cpio (based on argv[0]) 220 */ 221 if ((argv0 = strrchr(argv[0], '/')) != NULL) 222 argv0++; 223 else 224 argv0 = argv[0]; 225 226 if (strstr(argv0, NM_TAR)) { 227 argv0 = NM_TAR; 228 tar_options(argc, argv); 229 #ifndef NO_CPIO 230 } else if (strstr(argv0, NM_CPIO)) { 231 argv0 = NM_CPIO; 232 cpio_options(argc, argv); 233 #endif 234 } else { 235 argv0 = NM_PAX; 236 pax_options(argc, argv); 237 } 238 } 239 240 struct option pax_longopts[] = { 241 { "insecure", no_argument, 0, 242 OPT_INSECURE }, 243 { "force-local", no_argument, 0, 244 OPT_FORCE_LOCAL }, 245 { "use-compress-program", required_argument, 0, 246 OPT_USE_COMPRESS_PROGRAM }, 247 { "xz", no_argument, 0, 248 OPT_XZ }, 249 { 0, 0, 0, 250 0 }, 251 }; 252 253 /* 254 * pax_options() 255 * look at the user specified flags. set globals as required and check if 256 * the user specified a legal set of flags. If not, complain and exit 257 */ 258 259 static void 260 pax_options(int argc, char **argv) 261 { 262 int c; 263 size_t i; 264 u_int64_t flg = 0; 265 u_int64_t bflg = 0; 266 char *pt; 267 FSUB tmp; 268 269 /* 270 * process option flags 271 */ 272 while ((c = getopt_long(argc, argv, 273 "0ab:cdf:ijklno:p:rs:tuvwx:zAB:DE:G:HLMN:OPT:U:VXYZ", 274 pax_longopts, NULL)) != -1) { 275 switch (c) { 276 case '0': 277 sep = '\0'; 278 break; 279 case 'a': 280 /* 281 * append 282 */ 283 flg |= AF; 284 break; 285 case 'b': 286 /* 287 * specify blocksize 288 */ 289 flg |= BF; 290 if ((wrblksz = (int)str_offt(optarg)) <= 0) { 291 tty_warn(1, "Invalid block size %s", optarg); 292 pax_usage(); 293 } 294 break; 295 case 'c': 296 /* 297 * inverse match on patterns 298 */ 299 cflag = 1; 300 flg |= CF; 301 break; 302 case 'd': 303 /* 304 * match only dir on extract, not the subtree at dir 305 */ 306 dflag = 1; 307 flg |= DF; 308 break; 309 case 'f': 310 /* 311 * filename where the archive is stored 312 */ 313 arcname = optarg; 314 flg |= FF; 315 break; 316 case 'i': 317 /* 318 * interactive file rename 319 */ 320 iflag = 1; 321 flg |= IF; 322 break; 323 case 'j': 324 /* 325 * pass through bzip2 326 */ 327 gzip_program = BZIP2_CMD; 328 break; 329 case 'k': 330 /* 331 * do not clobber files that exist 332 */ 333 kflag = 1; 334 flg |= KF; 335 break; 336 case 'l': 337 /* 338 * try to link src to dest with copy (-rw) 339 */ 340 lflag = 1; 341 flg |= LF; 342 break; 343 case 'n': 344 /* 345 * select first match for a pattern only 346 */ 347 nflag = 1; 348 flg |= NF; 349 break; 350 case 'o': 351 /* 352 * pass format specific options 353 */ 354 flg |= OF; 355 if (opt_add(optarg) < 0) 356 pax_usage(); 357 break; 358 case 'p': 359 /* 360 * specify file characteristic options 361 */ 362 for (pt = optarg; *pt != '\0'; ++pt) { 363 switch(*pt) { 364 case 'a': 365 /* 366 * do not preserve access time 367 */ 368 patime = 0; 369 break; 370 case 'e': 371 /* 372 * preserve user id, group id, file 373 * mode, access/modification times 374 * and file flags. 375 */ 376 pids = 1; 377 pmode = 1; 378 patime = 1; 379 pmtime = 1; 380 pfflags = 1; 381 break; 382 #if 0 383 case 'f': 384 /* 385 * do not preserve file flags 386 */ 387 pfflags = 0; 388 break; 389 #endif 390 case 'm': 391 /* 392 * do not preserve modification time 393 */ 394 pmtime = 0; 395 break; 396 case 'o': 397 /* 398 * preserve uid/gid 399 */ 400 pids = 1; 401 break; 402 case 'p': 403 /* 404 * preserve file mode bits 405 */ 406 pmode = 1; 407 break; 408 default: 409 tty_warn(1, "Invalid -p string: %c", 410 *pt); 411 pax_usage(); 412 break; 413 } 414 } 415 flg |= PF; 416 break; 417 case 'r': 418 /* 419 * read the archive 420 */ 421 flg |= RF; 422 break; 423 case 's': 424 /* 425 * file name substitution name pattern 426 */ 427 if (rep_add(optarg) < 0) { 428 pax_usage(); 429 break; 430 } 431 flg |= SF; 432 break; 433 case 't': 434 /* 435 * preserve access time on filesystem nodes we read 436 */ 437 tflag = 1; 438 flg |= TF; 439 break; 440 case 'u': 441 /* 442 * ignore those older files 443 */ 444 uflag = 1; 445 flg |= UF; 446 break; 447 case 'v': 448 /* 449 * verbose operation mode 450 */ 451 vflag = 1; 452 flg |= VF; 453 break; 454 case 'w': 455 /* 456 * write an archive 457 */ 458 flg |= WF; 459 break; 460 case 'x': 461 /* 462 * specify an archive format on write 463 */ 464 tmp.name = optarg; 465 frmt = (FSUB *)bsearch((void *)&tmp, (void *)fsub, 466 sizeof(fsub)/sizeof(FSUB), sizeof(FSUB), c_frmt); 467 if (frmt != NULL) { 468 flg |= XF; 469 break; 470 } 471 tty_warn(1, "Unknown -x format: %s", optarg); 472 (void)fputs("pax: Known -x formats are:", stderr); 473 for (i = 0; i < (sizeof(fsub)/sizeof(FSUB)); ++i) 474 (void)fprintf(stderr, " %s", fsub[i].name); 475 (void)fputs("\n\n", stderr); 476 pax_usage(); 477 break; 478 case 'z': 479 /* 480 * use gzip. Non standard option. 481 */ 482 gzip_program = GZIP_CMD; 483 break; 484 case 'A': 485 Aflag = 1; 486 flg |= CAF; 487 break; 488 case 'B': 489 /* 490 * non-standard option on number of bytes written on a 491 * single archive volume. 492 */ 493 if ((wrlimit = str_offt(optarg)) <= 0) { 494 tty_warn(1, "Invalid write limit %s", optarg); 495 pax_usage(); 496 } 497 if (wrlimit % BLKMULT) { 498 tty_warn(1, 499 "Write limit is not a %d byte multiple", 500 BLKMULT); 501 pax_usage(); 502 } 503 flg |= CBF; 504 break; 505 case 'D': 506 /* 507 * On extraction check file inode change time before the 508 * modification of the file name. Non standard option. 509 */ 510 Dflag = 1; 511 flg |= CDF; 512 break; 513 case 'E': 514 /* 515 * non-standard limit on read faults 516 * 0 indicates stop after first error, values 517 * indicate a limit, "none" try forever 518 */ 519 flg |= CEF; 520 if (strcmp(none, optarg) == 0) 521 maxflt = -1; 522 else if ((maxflt = atoi(optarg)) < 0) { 523 tty_warn(1, 524 "Error count value must be positive"); 525 pax_usage(); 526 } 527 break; 528 case 'G': 529 /* 530 * non-standard option for selecting files within an 531 * archive by group (gid or name) 532 */ 533 if (grp_add(optarg) < 0) { 534 pax_usage(); 535 break; 536 } 537 flg |= CGF; 538 break; 539 case 'H': 540 /* 541 * follow command line symlinks only 542 */ 543 Hflag = 1; 544 flg |= CHF; 545 break; 546 case 'L': 547 /* 548 * follow symlinks 549 */ 550 Lflag = 1; 551 flg |= CLF; 552 break; 553 #ifdef SMALL 554 case 'M': 555 case 'N': 556 tty_warn(1, "Support for -%c is not compiled in", c); 557 exit(1); 558 #else /* !SMALL */ 559 case 'M': 560 /* 561 * Treat list of filenames on stdin as an 562 * mtree(8) specfile. Non standard option. 563 */ 564 Mflag = 1; 565 flg |= CMF; 566 break; 567 case 'N': 568 /* 569 * Use alternative directory for user db lookups. 570 */ 571 if (!setup_getid(optarg)) { 572 tty_warn(1, 573 "Unable to use user and group databases in `%s'", 574 optarg); 575 pax_usage(); 576 } 577 break; 578 #endif /* !SMALL */ 579 case 'O': 580 /* 581 * Force one volume. Non standard option. 582 */ 583 force_one_volume = 1; 584 break; 585 case 'P': 586 /* 587 * do NOT follow symlinks (default) 588 */ 589 Lflag = 0; 590 flg |= CPF; 591 break; 592 case 'T': 593 /* 594 * non-standard option for selecting files within an 595 * archive by modification time range (lower,upper) 596 */ 597 if (trng_add(optarg) < 0) { 598 pax_usage(); 599 break; 600 } 601 flg |= CTF; 602 break; 603 case 'U': 604 /* 605 * non-standard option for selecting files within an 606 * archive by user (uid or name) 607 */ 608 if (usr_add(optarg) < 0) { 609 pax_usage(); 610 break; 611 } 612 flg |= CUF; 613 break; 614 case 'V': 615 /* 616 * somewhat verbose operation mode (no listing) 617 */ 618 Vflag = 1; 619 flg |= VSF; 620 break; 621 case 'X': 622 /* 623 * do not pass over mount points in the file system 624 */ 625 Xflag = 1; 626 flg |= CXF; 627 break; 628 case 'Y': 629 /* 630 * On extraction check file inode change time after the 631 * modification of the file name. Non standard option. 632 */ 633 Yflag = 1; 634 flg |= CYF; 635 break; 636 case 'Z': 637 /* 638 * On extraction check modification time after the 639 * modification of the file name. Non standard option. 640 */ 641 Zflag = 1; 642 flg |= CZF; 643 break; 644 case OPT_INSECURE: 645 secure = 0; 646 break; 647 case OPT_FORCE_LOCAL: 648 forcelocal = 1; 649 break; 650 case OPT_USE_COMPRESS_PROGRAM: 651 gzip_program = optarg; 652 break; 653 case OPT_XZ: 654 gzip_program = XZ_CMD; 655 break; 656 case '?': 657 default: 658 pax_usage(); 659 break; 660 } 661 } 662 663 /* 664 * figure out the operation mode of pax read,write,extract,copy,append 665 * or list. check that we have not been given a bogus set of flags 666 * for the operation mode. 667 */ 668 if (ISLIST(flg)) { 669 act = LIST; 670 listf = stdout; 671 bflg = flg & BDLIST; 672 } else if (ISEXTRACT(flg)) { 673 act = EXTRACT; 674 bflg = flg & BDEXTR; 675 } else if (ISARCHIVE(flg)) { 676 act = ARCHIVE; 677 bflg = flg & BDARCH; 678 } else if (ISAPPND(flg)) { 679 act = APPND; 680 bflg = flg & BDARCH; 681 } else if (ISCOPY(flg)) { 682 act = COPY; 683 bflg = flg & BDCOPY; 684 } else 685 pax_usage(); 686 if (bflg) { 687 printflg(flg); 688 pax_usage(); 689 } 690 691 /* 692 * if we are writing (ARCHIVE) we use the default format if the user 693 * did not specify a format. when we write during an APPEND, we will 694 * adopt the format of the existing archive if none was supplied. 695 */ 696 if (!(flg & XF) && (act == ARCHIVE)) 697 frmt = &(fsub[DEFLT]); 698 699 /* 700 * process the args as they are interpreted by the operation mode 701 */ 702 switch (act) { 703 case LIST: 704 case EXTRACT: 705 for (; optind < argc; optind++) 706 if (pat_add(argv[optind], NULL, 0) < 0) 707 pax_usage(); 708 break; 709 case COPY: 710 if (optind >= argc) { 711 tty_warn(0, "Destination directory was not supplied"); 712 pax_usage(); 713 } 714 --argc; 715 dirptr = argv[argc]; 716 if (mkpath(dirptr) < 0) 717 exit(1); 718 /* FALLTHROUGH */ 719 case ARCHIVE: 720 case APPND: 721 for (; optind < argc; optind++) 722 if (ftree_add(argv[optind], 0) < 0) 723 pax_usage(); 724 /* 725 * no read errors allowed on updates/append operation! 726 */ 727 maxflt = 0; 728 break; 729 } 730 } 731 732 733 /* 734 * tar_options() 735 * look at the user specified flags. set globals as required and check if 736 * the user specified a legal set of flags. If not, complain and exit 737 */ 738 739 struct option tar_longopts[] = { 740 { "block-size", required_argument, 0, 'b' }, 741 { "bunzip2", no_argument, 0, 'j' }, 742 { "bzip2", no_argument, 0, 'j' }, 743 { "create", no_argument, 0, 'c' }, /* F */ 744 /* -e -- no corresponding long option */ 745 { "file", required_argument, 0, 'f' }, 746 { "dereference", no_argument, 0, 'h' }, 747 { "keep-old-files", no_argument, 0, 'k' }, 748 { "one-file-system", no_argument, 0, 'l' }, 749 { "modification-time", no_argument, 0, 'm' }, 750 { "old-archive", no_argument, 0, 'o' }, 751 { "portability", no_argument, 0, 'o' }, 752 { "same-permissions", no_argument, 0, 'p' }, 753 { "preserve-permissions", no_argument, 0, 'p' }, 754 { "preserve", no_argument, 0, 'p' }, 755 { "fast-read", no_argument, 0, 'q' }, 756 { "append", no_argument, 0, 'r' }, /* F */ 757 { "update", no_argument, 0, 'u' }, /* F */ 758 { "list", no_argument, 0, 't' }, /* F */ 759 { "verbose", no_argument, 0, 'v' }, 760 { "interactive", no_argument, 0, 'w' }, 761 { "confirmation", no_argument, 0, 'w' }, 762 { "extract", no_argument, 0, 'x' }, /* F */ 763 { "get", no_argument, 0, 'x' }, /* F */ 764 { "gzip", no_argument, 0, 'z' }, 765 { "gunzip", no_argument, 0, 'z' }, 766 { "read-full-blocks", no_argument, 0, 'B' }, 767 { "directory", required_argument, 0, 'C' }, 768 { "to-stdout", no_argument, 0, 'O' }, 769 { "absolute-paths", no_argument, 0, 'P' }, 770 { "sparse", no_argument, 0, 'S' }, 771 { "files-from", required_argument, 0, 'T' }, 772 { "summary", no_argument, 0, 'V' }, 773 { "stats", no_argument, 0, 'V' }, 774 { "exclude-from", required_argument, 0, 'X' }, 775 { "compress", no_argument, 0, 'Z' }, 776 { "uncompress", no_argument, 0, 'Z' }, 777 { "strict", no_argument, 0, 778 OPT_STRICT }, 779 { "atime-preserve", no_argument, 0, 780 OPT_ATIME_PRESERVE }, 781 { "unlink", no_argument, 0, 782 OPT_UNLINK }, 783 { "use-compress-program", required_argument, 0, 784 OPT_USE_COMPRESS_PROGRAM }, 785 { "force-local", no_argument, 0, 786 OPT_FORCE_LOCAL }, 787 { "insecure", no_argument, 0, 788 OPT_INSECURE }, 789 { "exclude", required_argument, 0, 790 OPT_EXCLUDE }, 791 { "no-recursion", no_argument, 0, 792 OPT_NORECURSE }, 793 { "xz", no_argument, 0, 794 OPT_XZ }, 795 #if !HAVE_NBTOOL_CONFIG_H 796 { "chroot", no_argument, 0, 797 OPT_CHROOT }, 798 #endif 799 #if 0 /* Not implemented */ 800 { "catenate", no_argument, 0, 'A' }, /* F */ 801 { "concatenate", no_argument, 0, 'A' }, /* F */ 802 { "diff", no_argument, 0, 'd' }, /* F */ 803 { "compare", no_argument, 0, 'd' }, /* F */ 804 { "checkpoint", no_argument, 0, 805 OPT_CHECKPOINT }, 806 { "help", no_argument, 0, 807 OPT_HELP }, 808 { "info-script", required_argument, 0, 'F' }, 809 { "new-volume-script", required_argument, 0, 'F' }, 810 { "incremental", no_argument, 0, 'G' }, 811 { "listed-incremental", required_argument, 0, 'g' }, 812 { "ignore-zeros", no_argument, 0, 'i' }, 813 { "ignore-failed-read", no_argument, 0, 814 OPT_IGNORE_FAILED_READ }, 815 { "starting-file", no_argument, 0, 'K' }, 816 { "tape-length", required_argument, 0, 'L' }, 817 { "multi-volume", no_argument, 0, 'M' }, 818 { "after-date", required_argument, 0, 'N' }, 819 { "newer", required_argument, 0, 'N' }, 820 { "record-number", no_argument, 0, 'R' }, 821 { "remove-files", no_argument, 0, 822 OPT_REMOVE_FILES }, 823 { "same-order", no_argument, 0, 's' }, 824 { "preserve-order", no_argument, 0, 's' }, 825 { "null", no_argument, 0, 826 OPT_NULL }, 827 { "totals", no_argument, 0, 828 OPT_TOTALS }, 829 { "volume-name", required_argument, 0, 'V' }, /* XXX */ 830 { "label", required_argument, 0, 'V' }, /* XXX */ 831 { "version", no_argument, 0, 832 OPT_VERSION }, 833 { "verify", no_argument, 0, 'W' }, 834 { "block-compress", no_argument, 0, 835 OPT_BLOCK_COMPRESS }, 836 #endif 837 { 0, 0, 0, 0 }, 838 }; 839 840 static void 841 tar_set_action(int op) 842 { 843 if (act != ERROR && act != op) 844 tar_usage(); 845 act = op; 846 } 847 848 static void 849 tar_options(int argc, char **argv) 850 { 851 int c; 852 int fstdin = 0; 853 int Oflag = 0; 854 int nincfiles = 0; 855 int incfiles_max = 0; 856 struct incfile { 857 char *file; 858 char *dir; 859 }; 860 struct incfile *incfiles = NULL; 861 862 /* 863 * Set default values. 864 */ 865 rmleadslash = 1; 866 is_gnutar = 1; 867 868 /* 869 * process option flags 870 */ 871 while ((c = getoldopt(argc, argv, 872 "+b:cef:hjklmopqrs:tuvwxzBC:HI:OPST:X:Z014578", 873 tar_longopts, NULL)) 874 != -1) { 875 switch(c) { 876 case 'b': 877 /* 878 * specify blocksize in 512-byte blocks 879 */ 880 if ((wrblksz = (int)str_offt(optarg)) <= 0) { 881 tty_warn(1, "Invalid block size %s", optarg); 882 tar_usage(); 883 } 884 wrblksz *= 512; /* XXX - check for int oflow */ 885 break; 886 case 'c': 887 /* 888 * create an archive 889 */ 890 tar_set_action(ARCHIVE); 891 break; 892 case 'e': 893 /* 894 * stop after first error 895 */ 896 maxflt = 0; 897 break; 898 case 'f': 899 /* 900 * filename where the archive is stored 901 */ 902 if ((optarg[0] == '-') && (optarg[1]== '\0')) { 903 /* 904 * treat a - as stdin 905 */ 906 fstdin = 1; 907 arcname = NULL; 908 break; 909 } 910 fstdin = 0; 911 arcname = optarg; 912 break; 913 case 'h': 914 /* 915 * follow symlinks 916 */ 917 Lflag = 1; 918 break; 919 case 'j': 920 /* 921 * pass through bzip2. not a standard option 922 */ 923 gzip_program = BZIP2_CMD; 924 break; 925 case 'k': 926 /* 927 * do not clobber files that exist 928 */ 929 kflag = 1; 930 break; 931 case 'l': 932 /* 933 * do not pass over mount points in the file system 934 */ 935 Xflag = 1; 936 break; 937 case 'm': 938 /* 939 * do not preserve modification time 940 */ 941 pmtime = 0; 942 break; 943 case 'o': 944 /* 945 * This option does several things based on whether 946 * this is a create or extract operation. 947 */ 948 if (act == ARCHIVE) { 949 /* GNU tar: write V7 format archives. */ 950 Oflag = 1; 951 /* 4.2BSD: don't add directory entries. */ 952 if (opt_add("write_opt=nodir") < 0) 953 tar_usage(); 954 955 } else { 956 /* SUS: don't preserve owner/group. */ 957 pids = 0; 958 nopids = 1; 959 } 960 break; 961 case 'O': 962 Oflag = 1; 963 break; 964 case 'p': 965 /* 966 * preserve user id, group id, file 967 * mode, access/modification times 968 */ 969 if (!nopids) 970 pids = 1; 971 pmode = 1; 972 patime = 1; 973 pmtime = 1; 974 break; 975 case 'q': 976 /* 977 * select first match for a pattern only 978 */ 979 nflag = 1; 980 break; 981 case 'r': 982 case 'u': 983 /* 984 * append to the archive 985 */ 986 tar_set_action(APPND); 987 break; 988 case 's': 989 /* 990 * file name substitution name pattern 991 */ 992 if (rep_add(optarg) < 0) { 993 tar_usage(); 994 break; 995 } 996 break; 997 case 't': 998 /* 999 * list contents of the tape 1000 */ 1001 tar_set_action(LIST); 1002 break; 1003 case 'v': 1004 /* 1005 * verbose operation mode 1006 */ 1007 vflag = 1; 1008 break; 1009 case 'w': 1010 /* 1011 * interactive file rename 1012 */ 1013 iflag = 1; 1014 break; 1015 case 'x': 1016 /* 1017 * extract an archive, preserving mode, 1018 * and mtime if possible. 1019 */ 1020 tar_set_action(EXTRACT); 1021 pmtime = 1; 1022 break; 1023 case 'z': 1024 /* 1025 * use gzip. Non standard option. 1026 */ 1027 gzip_program = GZIP_CMD; 1028 break; 1029 case 'B': 1030 /* 1031 * Nothing to do here, this is pax default 1032 */ 1033 break; 1034 case 'C': 1035 havechd++; 1036 chdname = optarg; 1037 break; 1038 case 'H': 1039 /* 1040 * follow command line symlinks only 1041 */ 1042 Hflag = 1; 1043 break; 1044 case 'I': 1045 case 'T': 1046 if (++nincfiles > incfiles_max) { 1047 incfiles_max = nincfiles + 3; 1048 incfiles = realloc(incfiles, 1049 sizeof(*incfiles) * incfiles_max); 1050 if (incfiles == NULL) { 1051 tty_warn(0, "Unable to allocate space " 1052 "for option list"); 1053 exit(1); 1054 } 1055 } 1056 incfiles[nincfiles - 1].file = optarg; 1057 incfiles[nincfiles - 1].dir = chdname; 1058 break; 1059 case 'P': 1060 /* 1061 * do not remove leading '/' from pathnames 1062 */ 1063 rmleadslash = 0; 1064 Aflag = 1; 1065 break; 1066 case 'S': 1067 /* do nothing; we already generate sparse files */ 1068 break; 1069 case 'V': 1070 /* 1071 * semi-verbose operation mode (no listing) 1072 */ 1073 Vflag = 1; 1074 break; 1075 case 'X': 1076 /* 1077 * GNU tar compat: exclude the files listed in optarg 1078 */ 1079 if (tar_gnutar_X_compat(optarg) != 0) 1080 tar_usage(); 1081 break; 1082 case 'Z': 1083 /* 1084 * use compress. 1085 */ 1086 gzip_program = COMPRESS_CMD; 1087 break; 1088 case '0': 1089 arcname = DEV_0; 1090 break; 1091 case '1': 1092 arcname = DEV_1; 1093 break; 1094 case '4': 1095 arcname = DEV_4; 1096 break; 1097 case '5': 1098 arcname = DEV_5; 1099 break; 1100 case '7': 1101 arcname = DEV_7; 1102 break; 1103 case '8': 1104 arcname = DEV_8; 1105 break; 1106 case OPT_ATIME_PRESERVE: 1107 patime = 1; 1108 break; 1109 case OPT_UNLINK: 1110 /* Just ignore -- we always unlink first. */ 1111 break; 1112 case OPT_USE_COMPRESS_PROGRAM: 1113 gzip_program = optarg; 1114 break; 1115 case OPT_FORCE_LOCAL: 1116 forcelocal = 1; 1117 break; 1118 case OPT_INSECURE: 1119 secure = 0; 1120 break; 1121 case OPT_STRICT: 1122 /* disable gnu extensions */ 1123 is_gnutar = 0; 1124 break; 1125 case OPT_EXCLUDE: 1126 if (tar_gnutar_minus_minus_exclude(optarg) != 0) 1127 tar_usage(); 1128 break; 1129 case OPT_NORECURSE: 1130 dflag = 1; 1131 break; 1132 #if !HAVE_NBTOOL_CONFIG_H 1133 case OPT_CHROOT: 1134 do_chroot = 1; 1135 break; 1136 #endif 1137 case OPT_XZ: 1138 gzip_program = XZ_CMD; 1139 break; 1140 default: 1141 tar_usage(); 1142 break; 1143 } 1144 } 1145 argc -= optind; 1146 argv += optind; 1147 1148 /* Tar requires an action. */ 1149 if (act == ERROR) 1150 tar_usage(); 1151 1152 /* Traditional tar behaviour (pax uses stderr unless in list mode) */ 1153 if (fstdin == 1 && act == ARCHIVE) 1154 listf = stderr; 1155 else 1156 listf = stdout; 1157 1158 /* Traditional tar behaviour (pax wants to read file list from stdin) */ 1159 if ((act == ARCHIVE || act == APPND) && argc == 0 && nincfiles == 0) 1160 exit(0); 1161 /* 1162 * if we are writing (ARCHIVE) specify tar, otherwise run like pax 1163 * (unless -o specified) 1164 */ 1165 if (act == ARCHIVE || act == APPND) 1166 frmt = &(fsub[Oflag ? F_TAR : F_USTAR]); 1167 else if (Oflag) { 1168 if (act == EXTRACT) 1169 to_stdout = 1; 1170 else { 1171 tty_warn(1, "The -O/-o options are only valid when " 1172 "writing or extracting an archive"); 1173 tar_usage(); 1174 } 1175 } 1176 1177 /* 1178 * process the args as they are interpreted by the operation mode 1179 */ 1180 switch (act) { 1181 case LIST: 1182 case EXTRACT: 1183 default: 1184 { 1185 int sawpat = 0; 1186 int dirisnext = 0; 1187 char *file, *dir = NULL; 1188 int mustfreedir = 0; 1189 1190 while (nincfiles || *argv != NULL) { 1191 /* 1192 * If we queued up any include files, 1193 * pull them in now. Otherwise, check 1194 * for -I and -C positional flags. 1195 * Anything else must be a file to 1196 * extract. 1197 */ 1198 if (nincfiles) { 1199 file = incfiles->file; 1200 dir = incfiles->dir; 1201 mustfreedir = 0; 1202 incfiles++; 1203 nincfiles--; 1204 } else if (strcmp(*argv, "-I") == 0) { 1205 if (*++argv == NULL) 1206 break; 1207 file = *argv++; 1208 dir = chdname; 1209 mustfreedir = 0; 1210 } else { 1211 file = NULL; 1212 dir = NULL; 1213 mustfreedir = 0; 1214 } 1215 if (file != NULL) { 1216 FILE *fp; 1217 char *str; 1218 1219 if (strcmp(file, "-") == 0) 1220 fp = stdin; 1221 else if ((fp = fopen(file, "r")) == NULL) { 1222 tty_warn(1, "Unable to open file '%s' for read", file); 1223 tar_usage(); 1224 } 1225 while ((str = get_line(fp)) != NULL) { 1226 if (dirisnext) { 1227 if (dir && mustfreedir) 1228 free(dir); 1229 dir = str; 1230 mustfreedir = 1; 1231 dirisnext = 0; 1232 continue; 1233 } 1234 if (strcmp(str, "-C") == 0) { 1235 havechd++; 1236 dirisnext = 1; 1237 free(str); 1238 continue; 1239 } 1240 if (strncmp(str, "-C ", 3) == 0) { 1241 havechd++; 1242 if (dir && mustfreedir) 1243 free(dir); 1244 dir = strdup(str + 3); 1245 mustfreedir = 1; 1246 free(str); 1247 continue; 1248 } 1249 if (pat_add(str, dir, NOGLOB_MTCH) < 0) 1250 tar_usage(); 1251 sawpat = 1; 1252 } 1253 /* Bomb if given -C w/out a dir. */ 1254 if (dirisnext) 1255 tar_usage(); 1256 if (dir && mustfreedir) 1257 free(dir); 1258 if (strcmp(file, "-") != 0) 1259 fclose(fp); 1260 if (get_line_error) { 1261 tty_warn(1, "Problem with file '%s'", file); 1262 tar_usage(); 1263 } 1264 } else if (strcmp(*argv, "-C") == 0) { 1265 if (*++argv == NULL) 1266 break; 1267 chdname = *argv++; 1268 havechd++; 1269 } else if (pat_add(*argv++, chdname, 0) < 0) 1270 tar_usage(); 1271 else 1272 sawpat = 1; 1273 } 1274 /* 1275 * if patterns were added, we are doing chdir() 1276 * on a file-by-file basis, else, just one 1277 * global chdir (if any) after opening input. 1278 */ 1279 if (sawpat > 0) 1280 chdname = NULL; 1281 } 1282 break; 1283 case ARCHIVE: 1284 case APPND: 1285 if (chdname != NULL) { /* initial chdir() */ 1286 if (ftree_add(chdname, 1) < 0) 1287 tar_usage(); 1288 } 1289 1290 while (nincfiles || *argv != NULL) { 1291 char *file, *dir; 1292 1293 /* 1294 * If we queued up any include files, pull them in 1295 * now. Otherwise, check for -I and -C positional 1296 * flags. Anything else must be a file to include 1297 * in the archive. 1298 */ 1299 if (nincfiles) { 1300 file = incfiles->file; 1301 dir = incfiles->dir; 1302 incfiles++; 1303 nincfiles--; 1304 } else if (strcmp(*argv, "-I") == 0) { 1305 if (*++argv == NULL) 1306 break; 1307 file = *argv++; 1308 dir = NULL; 1309 } else { 1310 file = NULL; 1311 dir = NULL; 1312 } 1313 if (file != NULL) { 1314 FILE *fp; 1315 char *str; 1316 int dirisnext = 0; 1317 1318 /* Set directory if needed */ 1319 if (dir) { 1320 if (ftree_add(dir, 1) < 0) 1321 tar_usage(); 1322 } 1323 1324 if (strcmp(file, "-") == 0) 1325 fp = stdin; 1326 else if ((fp = fopen(file, "r")) == NULL) { 1327 tty_warn(1, "Unable to open file '%s' for read", file); 1328 tar_usage(); 1329 } 1330 while ((str = get_line(fp)) != NULL) { 1331 if (dirisnext) { 1332 if (ftree_add(str, 1) < 0) 1333 tar_usage(); 1334 dirisnext = 0; 1335 continue; 1336 } 1337 if (strcmp(str, "-C") == 0) { 1338 dirisnext = 1; 1339 continue; 1340 } 1341 if (strncmp(str, "-C ", 3) == 0) { 1342 if (ftree_add(str + 3, 1) < 0) 1343 tar_usage(); 1344 continue; 1345 } 1346 if (ftree_add(str, 0) < 0) 1347 tar_usage(); 1348 } 1349 /* Bomb if given -C w/out a dir. */ 1350 if (dirisnext) 1351 tar_usage(); 1352 if (strcmp(file, "-") != 0) 1353 fclose(fp); 1354 if (get_line_error) { 1355 tty_warn(1, "Problem with file '%s'", 1356 file); 1357 tar_usage(); 1358 } 1359 } else if (strcmp(*argv, "-C") == 0) { 1360 if (*++argv == NULL) 1361 break; 1362 if (ftree_add(*argv++, 1) < 0) 1363 tar_usage(); 1364 } else if (ftree_add(*argv++, 0) < 0) 1365 tar_usage(); 1366 } 1367 /* 1368 * no read errors allowed on updates/append operation! 1369 */ 1370 maxflt = 0; 1371 break; 1372 } 1373 if (!fstdin && ((arcname == (char *)NULL) || (*arcname == '\0'))) { 1374 arcname = getenv("TAPE"); 1375 if ((arcname == NULL) || (*arcname == '\0')) 1376 arcname = _PATH_DEFTAPE; 1377 } 1378 } 1379 1380 int 1381 mkpath(path) 1382 char *path; 1383 { 1384 char *slash; 1385 int done = 0; 1386 1387 slash = path; 1388 1389 while (!done) { 1390 slash += strspn(slash, "/"); 1391 slash += strcspn(slash, "/"); 1392 1393 done = (*slash == '\0'); 1394 *slash = '\0'; 1395 1396 if (domkdir(path, 0777) == -1) 1397 goto out; 1398 1399 if (!done) 1400 *slash = '/'; 1401 } 1402 1403 return 0; 1404 out: 1405 /* Can't create or or not a directory */ 1406 syswarn(1, errno, "Cannot create directory `%s'", path); 1407 return -1; 1408 } 1409 1410 1411 #ifndef NO_CPIO 1412 struct option cpio_longopts[] = { 1413 { "reset-access-time", no_argument, 0, 'a' }, 1414 { "make-directories", no_argument, 0, 'd' }, 1415 { "nonmatching", no_argument, 0, 'f' }, 1416 { "extract", no_argument, 0, 'i' }, 1417 { "link", no_argument, 0, 'l' }, 1418 { "preserve-modification-time", no_argument, 0, 'm' }, 1419 { "create", no_argument, 0, 'o' }, 1420 { "pass-through", no_argument, 0, 'p' }, 1421 { "rename", no_argument, 0, 'r' }, 1422 { "list", no_argument, 0, 't' }, 1423 { "unconditional", no_argument, 0, 'u' }, 1424 { "verbose", no_argument, 0, 'v' }, 1425 { "append", no_argument, 0, 'A' }, 1426 { "pattern-file", required_argument, 0, 'E' }, 1427 { "file", required_argument, 0, 'F' }, 1428 { "force-local", no_argument, 0, 1429 OPT_FORCE_LOCAL }, 1430 { "format", required_argument, 0, 'H' }, 1431 { "dereference", no_argument, 0, 'L' }, 1432 { "swap-halfwords", no_argument, 0, 'S' }, 1433 { "summary", no_argument, 0, 'V' }, 1434 { "stats", no_argument, 0, 'V' }, 1435 { "insecure", no_argument, 0, 1436 OPT_INSECURE }, 1437 { "sparse", no_argument, 0, 1438 OPT_SPARSE }, 1439 { "xz", no_argument, 0, 1440 OPT_XZ }, 1441 1442 #ifdef notyet 1443 /* Not implemented */ 1444 { "null", no_argument, 0, '0' }, 1445 { "swap", no_argument, 0, 'b' }, 1446 { "numeric-uid-gid", no_argument, 0, 'n' }, 1447 { "swap-bytes", no_argument, 0, 's' }, 1448 { "message", required_argument, 0, 'M' }, 1449 { "owner", required_argument, 0 'R' }, 1450 { "dot", no_argument, 0, 'V' }, /* xxx */ 1451 { "block-size", required_argument, 0, 1452 OPT_BLOCK_SIZE }, 1453 { "no-absolute-pathnames", no_argument, 0, 1454 OPT_NO_ABSOLUTE_PATHNAMES }, 1455 { "no-preserve-owner", no_argument, 0, 1456 OPT_NO_PRESERVE_OWNER }, 1457 { "only-verify-crc", no_argument, 0, 1458 OPT_ONLY_VERIFY_CRC }, 1459 { "rsh-command", required_argument, 0, 1460 OPT_RSH_COMMAND }, 1461 { "version", no_argument, 0, 1462 OPT_VERSION }, 1463 #endif 1464 { 0, 0, 0, 0 }, 1465 }; 1466 1467 static void 1468 cpio_set_action(int op) 1469 { 1470 if ((act == APPND && op == ARCHIVE) || (act == ARCHIVE && op == APPND)) 1471 act = APPND; 1472 else if (act == EXTRACT && op == LIST) 1473 act = op; 1474 else if (act != ERROR && act != op) 1475 cpio_usage(); 1476 else 1477 act = op; 1478 } 1479 1480 /* 1481 * cpio_options() 1482 * look at the user specified flags. set globals as required and check if 1483 * the user specified a legal set of flags. If not, complain and exit 1484 */ 1485 1486 static void 1487 cpio_options(int argc, char **argv) 1488 { 1489 FSUB tmp; 1490 u_int64_t flg = 0; 1491 u_int64_t bflg = 0; 1492 int c; 1493 size_t i; 1494 FILE *fp; 1495 char *str; 1496 1497 uflag = 1; 1498 kflag = 1; 1499 pids = 1; 1500 pmode = 1; 1501 pmtime = 0; 1502 arcname = NULL; 1503 dflag = 1; 1504 nodirs = 1; 1505 /* 1506 * process option flags 1507 */ 1508 while ((c = getoldopt(argc, argv, 1509 "+abcdfiklmoprstuvzABC:E:F:H:I:LM:O:R:SVZ6", 1510 cpio_longopts, NULL)) != -1) { 1511 switch(c) { 1512 case 'a': 1513 /* 1514 * preserve access time on filesystem nodes we read 1515 */ 1516 tflag = 1; 1517 flg |= TF; 1518 break; 1519 #ifdef notyet 1520 case 'b': 1521 /* 1522 * swap bytes and half-words when reading data 1523 */ 1524 break; 1525 #endif 1526 case 'c': 1527 /* 1528 * ASCII cpio header 1529 */ 1530 frmt = &fsub[F_SV4CPIO]; 1531 break; 1532 case 'd': 1533 /* 1534 * create directories as needed 1535 * pax does this by default .. 1536 */ 1537 nodirs = 0; 1538 break; 1539 case 'f': 1540 /* 1541 * inverse match on patterns 1542 */ 1543 cflag = 1; 1544 flg |= CF; 1545 break; 1546 case 'i': 1547 /* 1548 * read the archive 1549 */ 1550 cpio_set_action(EXTRACT); 1551 flg |= RF; 1552 break; 1553 #ifdef notyet 1554 case 'k': 1555 break; 1556 #endif 1557 case 'l': 1558 /* 1559 * try to link src to dest with copy (-rw) 1560 */ 1561 lflag = 1; 1562 flg |= LF; 1563 break; 1564 case 'm': 1565 /* 1566 * preserve mtime 1567 */ 1568 flg |= PF; 1569 pmtime = 1; 1570 break; 1571 case 'o': 1572 /* 1573 * write an archive 1574 */ 1575 cpio_set_action(ARCHIVE); 1576 frmt = &(fsub[F_SV4CRC]); 1577 flg |= WF; 1578 break; 1579 case 'p': 1580 /* 1581 * cpio -p is like pax -rw 1582 */ 1583 cpio_set_action(COPY); 1584 flg |= RF | WF; 1585 break; 1586 case 'r': 1587 /* 1588 * interactive file rename 1589 */ 1590 iflag = 1; 1591 flg |= IF; 1592 break; 1593 #ifdef notyet 1594 case 's': 1595 /* 1596 * swap bytes after reading data 1597 */ 1598 break; 1599 #endif 1600 case 't': 1601 /* 1602 * list contents of archive 1603 */ 1604 cpio_set_action(LIST); 1605 listf = stdout; 1606 flg &= ~RF; 1607 break; 1608 case 'u': 1609 /* 1610 * don't ignore those older files 1611 */ 1612 uflag = 0; 1613 kflag = 0; 1614 flg |= UF; 1615 break; 1616 case 'v': 1617 /* 1618 * verbose operation mode 1619 */ 1620 vflag = 1; 1621 flg |= VF; 1622 break; 1623 case 'z': 1624 /* 1625 * use gzip. Non standard option. 1626 */ 1627 gzip_program = GZIP_CMD; 1628 break; 1629 case 'A': 1630 /* 1631 * append to an archive 1632 */ 1633 cpio_set_action(APPND); 1634 flg |= AF; 1635 break; 1636 case 'B': 1637 /* 1638 * set blocksize to 5120 1639 */ 1640 blksz = 5120; 1641 break; 1642 case 'C': 1643 /* 1644 * specify blocksize 1645 */ 1646 if ((blksz = (int)str_offt(optarg)) <= 0) { 1647 tty_warn(1, "Invalid block size %s", optarg); 1648 cpio_usage(); 1649 } 1650 break; 1651 case 'E': 1652 /* 1653 * file with patterns to extract or list 1654 */ 1655 if ((fp = fopen(optarg, "r")) == NULL) { 1656 tty_warn(1, "Unable to open file '%s' for read", 1657 optarg); 1658 cpio_usage(); 1659 } 1660 while ((str = get_line(fp)) != NULL) { 1661 pat_add(str, NULL, 0); 1662 } 1663 fclose(fp); 1664 if (get_line_error) { 1665 tty_warn(1, "Problem with file '%s'", optarg); 1666 cpio_usage(); 1667 } 1668 break; 1669 case 'H': 1670 /* 1671 * specify an archive format on write 1672 */ 1673 tmp.name = optarg; 1674 frmt = (FSUB *)bsearch((void *)&tmp, (void *)fsub, 1675 sizeof(fsub)/sizeof(FSUB), sizeof(FSUB), c_frmt); 1676 if (frmt != NULL) { 1677 flg |= XF; 1678 break; 1679 } 1680 tty_warn(1, "Unknown -H format: %s", optarg); 1681 (void)fputs("cpio: Known -H formats are:", stderr); 1682 for (i = 0; i < (sizeof(fsub)/sizeof(FSUB)); ++i) 1683 (void)fprintf(stderr, " %s", fsub[i].name); 1684 (void)fputs("\n\n", stderr); 1685 cpio_usage(); 1686 break; 1687 case 'F': 1688 case 'I': 1689 case 'O': 1690 /* 1691 * filename where the archive is stored 1692 */ 1693 if ((optarg[0] == '-') && (optarg[1]== '\0')) { 1694 /* 1695 * treat a - as stdin 1696 */ 1697 arcname = NULL; 1698 break; 1699 } 1700 arcname = optarg; 1701 break; 1702 case 'L': 1703 /* 1704 * follow symlinks 1705 */ 1706 Lflag = 1; 1707 flg |= CLF; 1708 break; 1709 #ifdef notyet 1710 case 'M': 1711 arg = optarg; 1712 break; 1713 case 'R': 1714 arg = optarg; 1715 break; 1716 #endif 1717 case 'S': 1718 /* 1719 * swap halfwords after reading data 1720 */ 1721 cpio_swp_head = 1; 1722 break; 1723 #ifdef notyet 1724 case 'V': /* print a '.' for each file processed */ 1725 break; 1726 #endif 1727 case 'V': 1728 /* 1729 * semi-verbose operation mode (no listing) 1730 */ 1731 Vflag = 1; 1732 flg |= VF; 1733 break; 1734 case 'Z': 1735 /* 1736 * use compress. Non standard option. 1737 */ 1738 gzip_program = COMPRESS_CMD; 1739 break; 1740 case '6': 1741 /* 1742 * process Version 6 cpio format 1743 */ 1744 frmt = &(fsub[F_BCPIO]); 1745 break; 1746 case OPT_FORCE_LOCAL: 1747 forcelocal = 1; 1748 break; 1749 case OPT_INSECURE: 1750 secure = 0; 1751 break; 1752 case OPT_SPARSE: 1753 /* do nothing; we already generate sparse files */ 1754 break; 1755 case OPT_XZ: 1756 gzip_program = XZ_CMD; 1757 break; 1758 default: 1759 cpio_usage(); 1760 break; 1761 } 1762 } 1763 1764 /* 1765 * figure out the operation mode of cpio. check that we have not been 1766 * given a bogus set of flags for the operation mode. 1767 */ 1768 if (ISLIST(flg)) { 1769 act = LIST; 1770 bflg = flg & BDLIST; 1771 } else if (ISEXTRACT(flg)) { 1772 act = EXTRACT; 1773 bflg = flg & BDEXTR; 1774 } else if (ISARCHIVE(flg)) { 1775 act = ARCHIVE; 1776 bflg = flg & BDARCH; 1777 } else if (ISAPPND(flg)) { 1778 act = APPND; 1779 bflg = flg & BDARCH; 1780 } else if (ISCOPY(flg)) { 1781 act = COPY; 1782 bflg = flg & BDCOPY; 1783 } else 1784 cpio_usage(); 1785 if (bflg) { 1786 cpio_usage(); 1787 } 1788 1789 /* 1790 * if we are writing (ARCHIVE) we use the default format if the user 1791 * did not specify a format. when we write during an APPEND, we will 1792 * adopt the format of the existing archive if none was supplied. 1793 */ 1794 if (!(flg & XF) && (act == ARCHIVE)) 1795 frmt = &(fsub[F_BCPIO]); 1796 1797 /* 1798 * process the args as they are interpreted by the operation mode 1799 */ 1800 switch (act) { 1801 case LIST: 1802 case EXTRACT: 1803 for (; optind < argc; optind++) 1804 if (pat_add(argv[optind], NULL, 0) < 0) 1805 cpio_usage(); 1806 break; 1807 case COPY: 1808 if (optind >= argc) { 1809 tty_warn(0, "Destination directory was not supplied"); 1810 cpio_usage(); 1811 } 1812 --argc; 1813 dirptr = argv[argc]; 1814 /* FALLTHROUGH */ 1815 case ARCHIVE: 1816 case APPND: 1817 if (argc != optind) { 1818 for (; optind < argc; optind++) 1819 if (ftree_add(argv[optind], 0) < 0) 1820 cpio_usage(); 1821 break; 1822 } 1823 /* 1824 * no read errors allowed on updates/append operation! 1825 */ 1826 maxflt = 0; 1827 while ((str = get_line(stdin)) != NULL) { 1828 ftree_add(str, 0); 1829 } 1830 if (get_line_error) { 1831 tty_warn(1, "Problem while reading stdin"); 1832 cpio_usage(); 1833 } 1834 break; 1835 default: 1836 cpio_usage(); 1837 break; 1838 } 1839 } 1840 #endif 1841 1842 /* 1843 * printflg() 1844 * print out those invalid flag sets found to the user 1845 */ 1846 1847 static void 1848 printflg(unsigned int flg) 1849 { 1850 int nxt; 1851 1852 (void)fprintf(stderr,"%s: Invalid combination of options:", argv0); 1853 while ((nxt = ffs(flg)) != 0) { 1854 flg &= ~(1 << (nxt - 1)); 1855 (void)fprintf(stderr, " -%c", flgch[nxt - 1]); 1856 } 1857 (void)putc('\n', stderr); 1858 } 1859 1860 /* 1861 * c_frmt() 1862 * comparison routine used by bsearch to find the format specified 1863 * by the user 1864 */ 1865 1866 static int 1867 c_frmt(const void *a, const void *b) 1868 { 1869 return strcmp(((const FSUB *)a)->name, ((const FSUB *)b)->name); 1870 } 1871 1872 /* 1873 * opt_next() 1874 * called by format specific options routines to get each format specific 1875 * flag and value specified with -o 1876 * Return: 1877 * pointer to next OPLIST entry or NULL (end of list). 1878 */ 1879 1880 OPLIST * 1881 opt_next(void) 1882 { 1883 OPLIST *opt; 1884 1885 if ((opt = ophead) != NULL) 1886 ophead = ophead->fow; 1887 return opt; 1888 } 1889 1890 /* 1891 * bad_opt() 1892 * generic routine used to complain about a format specific options 1893 * when the format does not support options. 1894 */ 1895 1896 int 1897 bad_opt(void) 1898 { 1899 OPLIST *opt; 1900 1901 if (ophead == NULL) 1902 return 0; 1903 /* 1904 * print all we were given 1905 */ 1906 tty_warn(1," These format options are not supported for %s", 1907 frmt->name); 1908 while ((opt = opt_next()) != NULL) 1909 (void)fprintf(stderr, "\t%s = %s\n", opt->name, opt->value); 1910 if (strcmp(NM_TAR, argv0) == 0) 1911 tar_usage(); 1912 #ifndef NO_CPIO 1913 else if (strcmp(NM_CPIO, argv0) == 0) 1914 cpio_usage(); 1915 #endif 1916 else 1917 pax_usage(); 1918 return 0; 1919 } 1920 1921 /* 1922 * opt_add() 1923 * breaks the value supplied to -o into a option name and value. options 1924 * are given to -o in the form -o name-value,name=value 1925 * multiple -o may be specified. 1926 * Return: 1927 * 0 if format in name=value format, -1 if -o is passed junk 1928 */ 1929 1930 int 1931 opt_add(const char *str) 1932 { 1933 OPLIST *opt; 1934 char *frpt; 1935 char *pt; 1936 char *endpt; 1937 char *dstr; 1938 1939 if ((str == NULL) || (*str == '\0')) { 1940 tty_warn(0, "Invalid option name"); 1941 return -1; 1942 } 1943 if ((dstr = strdup(str)) == NULL) { 1944 tty_warn(0, "Unable to allocate space for option list"); 1945 return -1; 1946 } 1947 frpt = endpt = dstr; 1948 1949 /* 1950 * break into name and values pieces and stuff each one into a 1951 * OPLIST structure. When we know the format, the format specific 1952 * option function will go through this list 1953 */ 1954 while ((frpt != NULL) && (*frpt != '\0')) { 1955 if ((endpt = strchr(frpt, ',')) != NULL) 1956 *endpt = '\0'; 1957 if ((pt = strchr(frpt, '=')) == NULL) { 1958 tty_warn(0, "Invalid options format"); 1959 free(dstr); 1960 return -1; 1961 } 1962 if ((opt = (OPLIST *)malloc(sizeof(OPLIST))) == NULL) { 1963 tty_warn(0, "Unable to allocate space for option list"); 1964 free(dstr); 1965 return -1; 1966 } 1967 *pt++ = '\0'; 1968 opt->name = frpt; 1969 opt->value = pt; 1970 opt->fow = NULL; 1971 if (endpt != NULL) 1972 frpt = endpt + 1; 1973 else 1974 frpt = NULL; 1975 if (ophead == NULL) { 1976 optail = ophead = opt; 1977 continue; 1978 } 1979 optail->fow = opt; 1980 optail = opt; 1981 } 1982 return 0; 1983 } 1984 1985 /* 1986 * str_offt() 1987 * Convert an expression of the following forms to an off_t > 0. 1988 * 1) A positive decimal number. 1989 * 2) A positive decimal number followed by a b (mult by 512). 1990 * 3) A positive decimal number followed by a k (mult by 1024). 1991 * 4) A positive decimal number followed by a m (mult by 512). 1992 * 5) A positive decimal number followed by a w (mult by sizeof int) 1993 * 6) Two or more positive decimal numbers (with/without k,b or w). 1994 * separated by x (also * for backwards compatibility), specifying 1995 * the product of the indicated values. 1996 * Return: 1997 * 0 for an error, a positive value o.w. 1998 */ 1999 2000 static off_t 2001 str_offt(char *val) 2002 { 2003 char *expr; 2004 off_t num, t; 2005 2006 num = STRTOOFFT(val, &expr, 0); 2007 if ((num == OFFT_MAX) || (num <= 0) || (expr == val)) 2008 return 0; 2009 2010 switch(*expr) { 2011 case 'b': 2012 t = num; 2013 num *= 512; 2014 if (t > num) 2015 return 0; 2016 ++expr; 2017 break; 2018 case 'k': 2019 t = num; 2020 num *= 1024; 2021 if (t > num) 2022 return 0; 2023 ++expr; 2024 break; 2025 case 'm': 2026 t = num; 2027 num *= 1048576; 2028 if (t > num) 2029 return 0; 2030 ++expr; 2031 break; 2032 case 'w': 2033 t = num; 2034 num *= sizeof(int); 2035 if (t > num) 2036 return 0; 2037 ++expr; 2038 break; 2039 } 2040 2041 switch(*expr) { 2042 case '\0': 2043 break; 2044 case '*': 2045 case 'x': 2046 t = num; 2047 num *= str_offt(expr + 1); 2048 if (t > num) 2049 return 0; 2050 break; 2051 default: 2052 return 0; 2053 } 2054 return num; 2055 } 2056 2057 char * 2058 get_line(FILE *f) 2059 { 2060 char *name, *temp; 2061 size_t len; 2062 2063 name = fgetln(f, &len); 2064 if (!name) { 2065 get_line_error = ferror(f) ? GETLINE_FILE_CORRUPT : 0; 2066 return 0; 2067 } 2068 if (name[len-1] != '\n') 2069 len++; 2070 temp = malloc(len); 2071 if (!temp) { 2072 get_line_error = GETLINE_OUT_OF_MEM; 2073 return 0; 2074 } 2075 memcpy(temp, name, len-1); 2076 temp[len-1] = 0; 2077 return temp; 2078 } 2079 2080 /* 2081 * no_op() 2082 * for those option functions where the archive format has nothing to do. 2083 * Return: 2084 * 0 2085 */ 2086 2087 static int 2088 no_op(void) 2089 { 2090 return 0; 2091 } 2092 2093 /* 2094 * pax_usage() 2095 * print the usage summary to the user 2096 */ 2097 2098 void 2099 pax_usage(void) 2100 { 2101 fprintf(stderr, 2102 "usage: pax [-0cdjnvzVO] [-E limit] [-f archive] [-N dbdir] [-s replstr] ...\n" 2103 " [-U user] ... [-G group] ... [-T [from_date][,to_date]] ...\n" 2104 " [pattern ...]\n"); 2105 fprintf(stderr, 2106 " pax -r [-cdijknuvzADOVYZ] [-E limit] [-f archive] [-N dbdir]\n" 2107 " [-o options] ... [-p string] ... [-s replstr] ... [-U user] ...\n" 2108 " [-G group] ... [-T [from_date][,to_date]] ... [pattern ...]\n"); 2109 fprintf(stderr, 2110 " pax -w [-dijtuvzAHLMOPVX] [-b blocksize] [[-a] [-f archive]] [-x format]\n" 2111 " [-B bytes] [-N dbdir] [-o options] ... [-s replstr] ...\n" 2112 " [-U user] ... [-G group] ...\n" 2113 " [-T [from_date][,to_date][/[c][m]]] ... [file ...]\n"); 2114 fprintf(stderr, 2115 " pax -r -w [-dijklntuvzADHLMOPVXYZ] [-N dbdir] [-p string] ...\n" 2116 " [-s replstr] ... [-U user] ... [-G group] ...\n" 2117 " [-T [from_date][,to_date][/[c][m]]] ... [file ...] directory\n"); 2118 exit(1); 2119 /* NOTREACHED */ 2120 } 2121 2122 /* 2123 * tar_usage() 2124 * print the usage summary to the user 2125 */ 2126 2127 void 2128 tar_usage(void) 2129 { 2130 (void)fputs("usage: tar [-]{crtux}[-befhjklmopqvwzHOPSXZ014578] [archive] " 2131 "[blocksize]\n" 2132 " [-C directory] [-T file] [-s replstr] " 2133 "[file ...]\n", stderr); 2134 exit(1); 2135 /* NOTREACHED */ 2136 } 2137 2138 #ifndef NO_CPIO 2139 /* 2140 * cpio_usage() 2141 * print the usage summary to the user 2142 */ 2143 2144 void 2145 cpio_usage(void) 2146 { 2147 2148 (void)fputs("usage: cpio -o [-aABcLvzZ] [-C bytes] [-F archive] " 2149 "[-H format] [-O archive]\n" 2150 " < name-list [> archive]\n" 2151 " cpio -i [-bBcdfmrsStuvzZ6] [-C bytes] [-E file] " 2152 "[-F archive] [-H format] \n" 2153 " [-I archive] " 2154 "[pattern ...] [< archive]\n" 2155 " cpio -p [-adlLmuv] destination-directory " 2156 "< name-list\n", stderr); 2157 exit(1); 2158 /* NOTREACHED */ 2159 } 2160 #endif 2161
Indexes created Tue Sep 30 11:09:46 GMT 2025