1/* $NetBSD: options.c,v 1.112 2011/08/31 16:24:54 plunky 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 43static char sccsid[] = "@(#)options.c 8.2 (Berkeley) 4/18/94"; 44#else 45__RCSID("$NetBSD: options.c,v 1.112 2011/08/31 16:24:54 plunky 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 79static int nopids; /* tar mode: suppress "pids" for -p option */ 80static char flgch[] = FLGCH; /* list of all possible flags (pax) */ 81static OPLIST *ophead = NULL; /* head for format specific options -x */ 82static OPLIST *optail = NULL; /* option tail */ 83 84static int opt_add(const char *); 85static int no_op(void); 86static void printflg(unsigned int); 87static int c_frmt(const void *, const void *); 88static off_t str_offt(char *); 89static char *get_line(FILE *fp); 90static void pax_options(int, char **); 91__dead static void pax_usage(void); 92static void tar_options(int, char **); 93__dead static void tar_usage(void); 94#ifndef NO_CPIO 95static void cpio_options(int, char **); 96__dead static void cpio_usage(void); 97#endif 98 99/* errors from get_line */ 100#define GETLINE_FILE_CORRUPT 1 101#define GETLINE_OUT_OF_MEM 2 102static int get_line_error; 103 104#define BZIP2_CMD "bzip2" /* command to run as bzip2 */ 105#define GZIP_CMD "gzip" /* command to run as gzip */ 106#define XZ_CMD "xz" /* command to run as xz */ 107#define COMPRESS_CMD "compress" /* command to run as compress */ 108 109/* 110 * Long options. 111 */ 112#define OPT_USE_COMPRESS_PROGRAM 0 113#define OPT_CHECKPOINT 1 114#define OPT_UNLINK 2 115#define OPT_HELP 3 116#define OPT_ATIME_PRESERVE 4 117#define OPT_IGNORE_FAILED_READ 5 118#define OPT_REMOVE_FILES 6 119#define OPT_NULL 7 120#define OPT_TOTALS 8 121#define OPT_VERSION 9 122#define OPT_EXCLUDE 10 123#define OPT_BLOCK_COMPRESS 11 124#define OPT_NORECURSE 12 125#define OPT_FORCE_LOCAL 13 126#define OPT_INSECURE 14 127#define OPT_STRICT 15 128#define OPT_SPARSE 16 129#define OPT_XZ 17 130#if !HAVE_NBTOOL_CONFIG_H 131#define OPT_CHROOT 18 132#endif 133 134/* 135 * Format specific routine table - MUST BE IN SORTED ORDER BY NAME 136 * (see pax.h for description of each function) 137 * 138 * name, blksz, hdsz, udev, hlk, blkagn, inhead, id, st_read, 139 * read, end_read, st_write, write, end_write, trail, 140 * subtrail, rd_data, wr_data, options 141 */ 142 143FSUB fsub[] = { 144#ifndef NO_CPIO 145/* 0: OLD BINARY CPIO */ 146 { "bcpio", 5120, sizeof(HD_BCPIO), 1, 0, 0, 1, bcpio_id, cpio_strd, 147 bcpio_rd, bcpio_endrd, cpio_stwr, bcpio_wr, cpio_endwr, NULL, 148 cpio_subtrail, rd_wrfile, wr_rdfile, bad_opt }, 149 150/* 1: OLD OCTAL CHARACTER CPIO */ 151 { "cpio", 5120, sizeof(HD_CPIO), 1, 0, 0, 1, cpio_id, cpio_strd, 152 cpio_rd, cpio_endrd, cpio_stwr, cpio_wr, cpio_endwr, NULL, 153 cpio_subtrail, rd_wrfile, wr_rdfile, bad_opt }, 154 155/* 2: SVR4 HEX CPIO */ 156 { "sv4cpio", 5120, sizeof(HD_VCPIO), 1, 0, 0, 1, vcpio_id, cpio_strd, 157 vcpio_rd, vcpio_endrd, cpio_stwr, vcpio_wr, cpio_endwr, NULL, 158 cpio_subtrail, rd_wrfile, wr_rdfile, bad_opt }, 159 160/* 3: SVR4 HEX CPIO WITH CRC */ 161 { "sv4crc", 5120, sizeof(HD_VCPIO), 1, 0, 0, 1, crc_id, crc_strd, 162 vcpio_rd, vcpio_endrd, crc_stwr, vcpio_wr, cpio_endwr, NULL, 163 cpio_subtrail, rd_wrfile, wr_rdfile, bad_opt }, 164#endif 165/* 4: OLD TAR */ 166 { "tar", 10240, BLKMULT, 0, 1, BLKMULT, 0, tar_id, no_op, 167 tar_rd, tar_endrd, no_op, tar_wr, tar_endwr, tar_trail, 168 NULL, rd_wrfile, wr_rdfile, tar_opt }, 169 170/* 5: POSIX USTAR */ 171 { "ustar", 10240, BLKMULT, 0, 1, BLKMULT, 0, ustar_id, ustar_strd, 172 ustar_rd, tar_endrd, ustar_stwr, ustar_wr, tar_endwr, tar_trail, 173 NULL, rd_wrfile, wr_rdfile, bad_opt } 174}; 175#ifndef NO_CPIO 176#define F_BCPIO 0 /* old binary cpio format */ 177#define F_CPIO 1 /* old octal character cpio format */ 178#define F_SV4CPIO 2 /* SVR4 hex cpio format */ 179#define F_SV4CRC 3 /* SVR4 hex with crc cpio format */ 180#define F_TAR 4 /* old V7 UNIX tar format */ 181#define F_USTAR 5 /* ustar format */ 182#else 183#define F_TAR 0 /* old V7 UNIX tar format */ 184#define F_USTAR 1 /* ustar format */ 185#endif 186#define DEFLT F_USTAR /* default write format from list above */ 187 188/* 189 * ford is the archive search order used by get_arc() to determine what kind 190 * of archive we are dealing with. This helps to properly id archive formats 191 * some formats may be subsets of others.... 192 */ 193int ford[] = {F_USTAR, F_TAR, 194#ifndef NO_CPIO 195 F_SV4CRC, F_SV4CPIO, F_CPIO, F_BCPIO, 196#endif 197 -1}; 198 199/* 200 * filename record separator 201 */ 202int sep = '\n'; 203 204/* 205 * Do we have -C anywhere? 206 */ 207int havechd = 0; 208 209/* 210 * options() 211 * figure out if we are pax, tar or cpio. Call the appropriate options 212 * parser 213 */ 214 215void 216options(int argc, char **argv) 217{ 218 219 /* 220 * Are we acting like pax, tar or cpio (based on argv[0]) 221 */ 222 if ((argv0 = strrchr(argv[0], '/')) != NULL) 223 argv0++; 224 else 225 argv0 = argv[0]; 226 227 if (strstr(argv0, NM_TAR)) { 228 argv0 = NM_TAR; 229 tar_options(argc, argv); 230#ifndef NO_CPIO 231 } else if (strstr(argv0, NM_CPIO)) { 232 argv0 = NM_CPIO; 233 cpio_options(argc, argv); 234#endif 235 } else { 236 argv0 = NM_PAX; 237 pax_options(argc, argv); 238 } 239} 240 241struct option pax_longopts[] = { 242 { "insecure", no_argument, 0, 243 OPT_INSECURE }, 244 { "force-local", no_argument, 0, 245 OPT_FORCE_LOCAL }, 246 { "use-compress-program", required_argument, 0, 247 OPT_USE_COMPRESS_PROGRAM }, 248 { "xz", no_argument, 0, 249 OPT_XZ }, 250 { 0, 0, 0, 251 0 }, 252}; 253 254/* 255 * pax_options() 256 * look at the user specified flags. set globals as required and check if 257 * the user specified a legal set of flags. If not, complain and exit 258 */ 259 260static void 261pax_options(int argc, char **argv) 262{ 263 int c; 264 size_t i; 265 u_int64_t flg = 0; 266 u_int64_t bflg = 0; 267 char *pt; 268 FSUB tmp; 269 270 /* 271 * process option flags 272 */ 273 while ((c = getopt_long(argc, argv, 274 "0ab:cdf:ijklno:p:rs:tuvwx:zAB:DE:G:HLMN:OPT:U:VXYZ", 275 pax_longopts, NULL)) != -1) { 276 switch (c) { 277 case '0': 278 sep = '\0'; 279 break; 280 case 'a': 281 /* 282 * append 283 */ 284 flg |= AF; 285 break; 286 case 'b': 287 /* 288 * specify blocksize 289 */ 290 flg |= BF; 291 if ((wrblksz = (int)str_offt(optarg)) <= 0) { 292 tty_warn(1, "Invalid block size %s", optarg); 293 pax_usage(); 294 } 295 break; 296 case 'c': 297 /* 298 * inverse match on patterns 299 */ 300 cflag = 1; 301 flg |= CF; 302 break; 303 case 'd': 304 /* 305 * match only dir on extract, not the subtree at dir 306 */ 307 dflag = 1; 308 flg |= DF; 309 break; 310 case 'f': 311 /* 312 * filename where the archive is stored 313 */ 314 arcname = optarg; 315 flg |= FF; 316 break; 317 case 'i': 318 /* 319 * interactive file rename 320 */ 321 iflag = 1; 322 flg |= IF; 323 break; 324 case 'j': 325 /* 326 * pass through bzip2 327 */ 328 gzip_program = BZIP2_CMD; 329 break; 330 case 'k': 331 /* 332 * do not clobber files that exist 333 */ 334 kflag = 1; 335 flg |= KF; 336 break; 337 case 'l': 338 /* 339 * try to link src to dest with copy (-rw) 340 */ 341 lflag = 1; 342 flg |= LF; 343 break; 344 case 'n': 345 /* 346 * select first match for a pattern only 347 */ 348 nflag = 1; 349 flg |= NF; 350 break; 351 case 'o': 352 /* 353 * pass format specific options 354 */ 355 flg |= OF; 356 if (opt_add(optarg) < 0) 357 pax_usage(); 358 break; 359 case 'p': 360 /* 361 * specify file characteristic options 362 */ 363 for (pt = optarg; *pt != '\0'; ++pt) { 364 switch(*pt) { 365 case 'a': 366 /* 367 * do not preserve access time 368 */ 369 patime = 0; 370 break; 371 case 'e': 372 /* 373 * preserve user id, group id, file 374 * mode, access/modification times 375 * and file flags. 376 */ 377 pids = 1; 378 pmode = 1; 379 patime = 1; 380 pmtime = 1; 381 pfflags = 1; 382 break; 383#if 0 384 case 'f': 385 /* 386 * do not preserve file flags 387 */ 388 pfflags = 0; 389 break; 390#endif 391 case 'm': 392 /* 393 * do not preserve modification time 394 */ 395 pmtime = 0; 396 break; 397 case 'o': 398 /* 399 * preserve uid/gid 400 */ 401 pids = 1; 402 break; 403 case 'p': 404 /* 405 * preserve file mode bits 406 */ 407 pmode = 1; 408 break; 409 default: 410 tty_warn(1, "Invalid -p string: %c", 411 *pt); 412 pax_usage(); 413 break; 414 } 415 } 416 flg |= PF; 417 break; 418 case 'r': 419 /* 420 * read the archive 421 */ 422 flg |= RF; 423 break; 424 case 's': 425 /* 426 * file name substitution name pattern 427 */ 428 if (rep_add(optarg) < 0) { 429 pax_usage(); 430 break; 431 } 432 flg |= SF; 433 break; 434 case 't': 435 /* 436 * preserve access time on filesystem nodes we read 437 */ 438 tflag = 1; 439 flg |= TF; 440 break; 441 case 'u': 442 /* 443 * ignore those older files 444 */ 445 uflag = 1; 446 flg |= UF; 447 break; 448 case 'v': 449 /* 450 * verbose operation mode 451 */ 452 vflag = 1; 453 flg |= VF; 454 break; 455 case 'w': 456 /* 457 * write an archive 458 */ 459 flg |= WF; 460 break; 461 case 'x': 462 /* 463 * specify an archive format on write 464 */ 465 tmp.name = optarg; 466 frmt = (FSUB *)bsearch((void *)&tmp, (void *)fsub, 467 sizeof(fsub)/sizeof(FSUB), sizeof(FSUB), c_frmt); 468 if (frmt != NULL) { 469 flg |= XF; 470 break; 471 } 472 tty_warn(1, "Unknown -x format: %s", optarg); 473 (void)fputs("pax: Known -x formats are:", stderr); 474 for (i = 0; i < (sizeof(fsub)/sizeof(FSUB)); ++i) 475 (void)fprintf(stderr, " %s", fsub[i].name); 476 (void)fputs("\n\n", stderr); 477 pax_usage(); 478 break; 479 case 'z': 480 /* 481 * use gzip. Non standard option. 482 */ 483 gzip_program = GZIP_CMD; 484 break; 485 case 'A': 486 Aflag = 1; 487 flg |= CAF; 488 break; 489 case 'B': 490 /* 491 * non-standard option on number of bytes written on a 492 * single archive volume. 493 */ 494 if ((wrlimit = str_offt(optarg)) <= 0) { 495 tty_warn(1, "Invalid write limit %s", optarg); 496 pax_usage(); 497 } 498 if (wrlimit % BLKMULT) { 499 tty_warn(1, 500 "Write limit is not a %d byte multiple", 501 BLKMULT); 502 pax_usage(); 503 } 504 flg |= CBF; 505 break; 506 case 'D': 507 /* 508 * On extraction check file inode change time before the 509 * modification of the file name. Non standard option. 510 */ 511 Dflag = 1; 512 flg |= CDF; 513 break; 514 case 'E': 515 /* 516 * non-standard limit on read faults 517 * 0 indicates stop after first error, values 518 * indicate a limit, "none" try forever 519 */ 520 flg |= CEF; 521 if (strcmp(none, optarg) == 0) 522 maxflt = -1; 523 else if ((maxflt = atoi(optarg)) < 0) { 524 tty_warn(1, 525 "Error count value must be positive"); 526 pax_usage(); 527 } 528 break; 529 case 'G': 530 /* 531 * non-standard option for selecting files within an 532 * archive by group (gid or name) 533 */ 534 if (grp_add(optarg) < 0) { 535 pax_usage(); 536 break; 537 } 538 flg |= CGF; 539 break; 540 case 'H': 541 /* 542 * follow command line symlinks only 543 */ 544 Hflag = 1; 545 flg |= CHF; 546 break; 547 case 'L': 548 /* 549 * follow symlinks 550 */ 551 Lflag = 1; 552 flg |= CLF; 553 break; 554#ifdef SMALL 555 case 'M': 556 case 'N': 557 tty_warn(1, "Support for -%c is not compiled in", c); 558 exit(1); 559#else /* !SMALL */ 560 case 'M': 561 /* 562 * Treat list of filenames on stdin as an 563 * mtree(8) specfile. Non standard option. 564 */ 565 Mflag = 1; 566 flg |= CMF; 567 break; 568 case 'N': 569 /* 570 * Use alternative directory for user db lookups. 571 */ 572 if (!setup_getid(optarg)) { 573 tty_warn(1, 574 "Unable to use user and group databases in `%s'", 575 optarg); 576 pax_usage(); 577 } 578 break; 579#endif /* !SMALL */ 580 case 'O': 581 /* 582 * Force one volume. Non standard option. 583 */ 584 force_one_volume = 1; 585 break; 586 case 'P': 587 /* 588 * do NOT follow symlinks (default) 589 */ 590 Lflag = 0; 591 flg |= CPF; 592 break; 593 case 'T': 594 /* 595 * non-standard option for selecting files within an 596 * archive by modification time range (lower,upper) 597 */ 598 if (trng_add(optarg) < 0) { 599 pax_usage(); 600 break; 601 } 602 flg |= CTF; 603 break; 604 case 'U': 605 /* 606 * non-standard option for selecting files within an 607 * archive by user (uid or name) 608 */ 609 if (usr_add(optarg) < 0) { 610 pax_usage(); 611 break; 612 } 613 flg |= CUF; 614 break; 615 case 'V': 616 /* 617 * somewhat verbose operation mode (no listing) 618 */ 619 Vflag = 1; 620 flg |= VSF; 621 break; 622 case 'X': 623 /* 624 * do not pass over mount points in the file system 625 */ 626 Xflag = 1; 627 flg |= CXF; 628 break; 629 case 'Y': 630 /* 631 * On extraction check file inode change time after the 632 * modification of the file name. Non standard option. 633 */ 634 Yflag = 1; 635 flg |= CYF; 636 break; 637 case 'Z': 638 /* 639 * On extraction check modification time after the 640 * modification of the file name. Non standard option. 641 */ 642 Zflag = 1; 643 flg |= CZF; 644 break; 645 case OPT_INSECURE: 646 secure = 0; 647 break; 648 case OPT_FORCE_LOCAL: 649 forcelocal = 1; 650 break; 651 case OPT_USE_COMPRESS_PROGRAM: 652 gzip_program = optarg; 653 break; 654 case OPT_XZ: 655 gzip_program = XZ_CMD; 656 break; 657 case '?': 658 default: 659 pax_usage(); 660 break; 661 } 662 } 663 664 /* 665 * figure out the operation mode of pax read,write,extract,copy,append 666 * or list. check that we have not been given a bogus set of flags 667 * for the operation mode. 668 */ 669 if (ISLIST(flg)) { 670 act = LIST; 671 listf = stdout; 672 bflg = flg & BDLIST; 673 } else if (ISEXTRACT(flg)) { 674 act = EXTRACT; 675 bflg = flg & BDEXTR; 676 } else if (ISARCHIVE(flg)) { 677 act = ARCHIVE; 678 bflg = flg & BDARCH; 679 } else if (ISAPPND(flg)) { 680 act = APPND; 681 bflg = flg & BDARCH; 682 } else if (ISCOPY(flg)) { 683 act = COPY; 684 bflg = flg & BDCOPY; 685 } else 686 pax_usage(); 687 if (bflg) { 688 printflg(flg); 689 pax_usage(); 690 } 691 692 /* 693 * if we are writing (ARCHIVE) we use the default format if the user 694 * did not specify a format. when we write during an APPEND, we will 695 * adopt the format of the existing archive if none was supplied. 696 */ 697 if (!(flg & XF) && (act == ARCHIVE)) 698 frmt = &(fsub[DEFLT]); 699 700 /* 701 * process the args as they are interpreted by the operation mode 702 */ 703 switch (act) { 704 case LIST: 705 case EXTRACT: 706 for (; optind < argc; optind++) 707 if (pat_add(argv[optind], NULL, 0) < 0) 708 pax_usage(); 709 break; 710 case COPY: 711 if (optind >= argc) { 712 tty_warn(0, "Destination directory was not supplied"); 713 pax_usage(); 714 } 715 --argc; 716 dirptr = argv[argc]; 717 if (mkpath(dirptr) < 0) 718 exit(1); 719 /* FALLTHROUGH */ 720 case ARCHIVE: 721 case APPND: 722 for (; optind < argc; optind++) 723 if (ftree_add(argv[optind], 0) < 0) 724 pax_usage(); 725 /* 726 * no read errors allowed on updates/append operation! 727 */ 728 maxflt = 0; 729 break; 730 } 731} 732 733 734/* 735 * tar_options() 736 * look at the user specified flags. set globals as required and check if 737 * the user specified a legal set of flags. If not, complain and exit 738 */ 739 740struct option tar_longopts[] = { 741 { "block-size", required_argument, 0, 'b' }, 742 { "bunzip2", no_argument, 0, 'j' }, 743 { "bzip2", no_argument, 0, 'j' }, 744 { "create", no_argument, 0, 'c' }, /* F */ 745 /* -e -- no corresponding long option */ 746 { "file", required_argument, 0, 'f' }, 747 { "dereference", no_argument, 0, 'h' }, 748 { "keep-old-files", no_argument, 0, 'k' }, 749 { "one-file-system", no_argument, 0, 'l' }, 750 { "modification-time", no_argument, 0, 'm' }, 751 { "old-archive", no_argument, 0, 'o' }, 752 { "portability", no_argument, 0, 'o' }, 753 { "same-permissions", no_argument, 0, 'p' }, 754 { "preserve-permissions", no_argument, 0, 'p' }, 755 { "preserve", no_argument, 0, 'p' }, 756 { "fast-read", no_argument, 0, 'q' }, 757 { "append", no_argument, 0, 'r' }, /* F */ 758 { "update", no_argument, 0, 'u' }, /* F */ 759 { "list", no_argument, 0, 't' }, /* F */ 760 { "verbose", no_argument, 0, 'v' }, 761 { "interactive", no_argument, 0, 'w' }, 762 { "confirmation", no_argument, 0, 'w' }, 763 { "extract", no_argument, 0, 'x' }, /* F */ 764 { "get", no_argument, 0, 'x' }, /* F */ 765 { "gzip", no_argument, 0, 'z' }, 766 { "gunzip", no_argument, 0, 'z' }, 767 { "read-full-blocks", no_argument, 0, 'B' }, 768 { "directory", required_argument, 0, 'C' }, 769 { "to-stdout", no_argument, 0, 'O' }, 770 { "absolute-paths", no_argument, 0, 'P' }, 771 { "sparse", no_argument, 0, 'S' }, 772 { "files-from", required_argument, 0, 'T' }, 773 { "summary", no_argument, 0, 'V' }, 774 { "stats", no_argument, 0, 'V' }, 775 { "exclude-from", required_argument, 0, 'X' }, 776 { "compress", no_argument, 0, 'Z' }, 777 { "uncompress", no_argument, 0, 'Z' }, 778 { "strict", no_argument, 0, 779 OPT_STRICT }, 780 { "atime-preserve", no_argument, 0, 781 OPT_ATIME_PRESERVE }, 782 { "unlink", no_argument, 0, 783 OPT_UNLINK }, 784 { "use-compress-program", required_argument, 0, 785 OPT_USE_COMPRESS_PROGRAM }, 786 { "force-local", no_argument, 0, 787 OPT_FORCE_LOCAL }, 788 { "insecure", no_argument, 0, 789 OPT_INSECURE }, 790 { "exclude", required_argument, 0, 791 OPT_EXCLUDE }, 792 { "no-recursion", no_argument, 0, 793 OPT_NORECURSE }, 794 { "xz", no_argument, 0, 795 OPT_XZ }, 796#if !HAVE_NBTOOL_CONFIG_H 797 { "chroot", no_argument, 0, 798 OPT_CHROOT }, 799#endif 800#if 0 /* Not implemented */ 801 { "catenate", no_argument, 0, 'A' }, /* F */ 802 { "concatenate", no_argument, 0, 'A' }, /* F */ 803 { "diff", no_argument, 0, 'd' }, /* F */ 804 { "compare", no_argument, 0, 'd' }, /* F */ 805 { "checkpoint", no_argument, 0, 806 OPT_CHECKPOINT }, 807 { "help", no_argument, 0, 808 OPT_HELP }, 809 { "info-script", required_argument, 0, 'F' }, 810 { "new-volume-script", required_argument, 0, 'F' }, 811 { "incremental", no_argument, 0, 'G' }, 812 { "listed-incremental", required_argument, 0, 'g' }, 813 { "ignore-zeros", no_argument, 0, 'i' }, 814 { "ignore-failed-read", no_argument, 0, 815 OPT_IGNORE_FAILED_READ }, 816 { "starting-file", no_argument, 0, 'K' }, 817 { "tape-length", required_argument, 0, 'L' }, 818 { "multi-volume", no_argument, 0, 'M' }, 819 { "after-date", required_argument, 0, 'N' }, 820 { "newer", required_argument, 0, 'N' }, 821 { "record-number", no_argument, 0, 'R' }, 822 { "remove-files", no_argument, 0, 823 OPT_REMOVE_FILES }, 824 { "same-order", no_argument, 0, 's' }, 825 { "preserve-order", no_argument, 0, 's' }, 826 { "null", no_argument, 0, 827 OPT_NULL }, 828 { "totals", no_argument, 0, 829 OPT_TOTALS }, 830 { "volume-name", required_argument, 0, 'V' }, /* XXX */ 831 { "label", required_argument, 0, 'V' }, /* XXX */ 832 { "version", no_argument, 0, 833 OPT_VERSION }, 834 { "verify", no_argument, 0, 'W' }, 835 { "block-compress", no_argument, 0, 836 OPT_BLOCK_COMPRESS }, 837#endif 838 { 0, 0, 0, 0 }, 839}; 840 841static void 842tar_set_action(int op) 843{ 844 if (act != ERROR && act != op) 845 tar_usage(); 846 act = op; 847} 848 849static void 850tar_options(int argc, char **argv) 851{ 852 int c; 853 int fstdin = 0; 854 int Oflag = 0; 855 int nincfiles = 0; 856 int incfiles_max = 0; 857 struct incfile { 858 char *file; 859 char *dir; 860 }; 861 struct incfile *incfiles = NULL; 862 863 /* 864 * Set default values. 865 */ 866 rmleadslash = 1; 867 is_gnutar = 1; 868 869 /* 870 * process option flags 871 */ 872 while ((c = getoldopt(argc, argv, 873 "+b:cef:hjklmopqrs:tuvwxzBC:HI:OPST:X:Z014578", 874 tar_longopts, NULL)) 875 != -1) { 876 switch(c) { 877 case 'b': 878 /* 879 * specify blocksize in 512-byte blocks 880 */ 881 if ((wrblksz = (int)str_offt(optarg)) <= 0) { 882 tty_warn(1, "Invalid block size %s", optarg); 883 tar_usage(); 884 } 885 wrblksz *= 512; /* XXX - check for int oflow */ 886 break; 887 case 'c': 888 /* 889 * create an archive 890 */ 891 tar_set_action(ARCHIVE); 892 break; 893 case 'e': 894 /* 895 * stop after first error 896 */ 897 maxflt = 0; 898 break; 899 case 'f': 900 /* 901 * filename where the archive is stored 902 */ 903 if ((optarg[0] == '-') && (optarg[1]== '\0')) { 904 /* 905 * treat a - as stdin 906 */ 907 fstdin = 1; 908 arcname = NULL; 909 break; 910 } 911 fstdin = 0; 912 arcname = optarg; 913 break; 914 case 'h': 915 /* 916 * follow symlinks 917 */ 918 Lflag = 1; 919 break; 920 case 'j': 921 /* 922 * pass through bzip2. not a standard option 923 */ 924 gzip_program = BZIP2_CMD; 925 break; 926 case 'k': 927 /* 928 * do not clobber files that exist 929 */ 930 kflag = 1; 931 break; 932 case 'l': 933 /* 934 * do not pass over mount points in the file system 935 */ 936 Xflag = 1; 937 break; 938 case 'm': 939 /* 940 * do not preserve modification time 941 */ 942 pmtime = 0; 943 break; 944 case 'o': 945 /* 946 * This option does several things based on whether 947 * this is a create or extract operation. 948 */ 949 if (act == ARCHIVE) { 950 /* GNU tar: write V7 format archives. */ 951 Oflag = 1; 952 /* 4.2BSD: don't add directory entries. */ 953 if (opt_add("write_opt=nodir") < 0) 954 tar_usage(); 955 956 } else { 957 /* SUS: don't preserve owner/group. */ 958 pids = 0; 959 nopids = 1; 960 } 961 break; 962 case 'O': 963 Oflag = 1; 964 break; 965 case 'p': 966 /* 967 * preserve user id, group id, file 968 * mode, access/modification times 969 */ 970 if (!nopids) 971 pids = 1; 972 pmode = 1; 973 patime = 1; 974 pmtime = 1; 975 break; 976 case 'q': 977 /* 978 * select first match for a pattern only 979 */ 980 nflag = 1; 981 break; 982 case 'r': 983 case 'u': 984 /* 985 * append to the archive 986 */ 987 tar_set_action(APPND); 988 break; 989 case 's': 990 /* 991 * file name substitution name pattern 992 */ 993 if (rep_add(optarg) < 0) { 994 tar_usage(); 995 break; 996 } 997 break; 998 case 't': 999 /* 1000 * list contents of the tape 1001 */ 1002 tar_set_action(LIST); 1003 break; 1004 case 'v': 1005 /* 1006 * verbose operation mode 1007 */ 1008 vflag = 1; 1009 break; 1010 case 'w': 1011 /* 1012 * interactive file rename 1013 */ 1014 iflag = 1; 1015 break; 1016 case 'x': 1017 /* 1018 * extract an archive, preserving mode, 1019 * and mtime if possible. 1020 */ 1021 tar_set_action(EXTRACT); 1022 pmtime = 1; 1023 break; 1024 case 'z': 1025 /* 1026 * use gzip. Non standard option. 1027 */ 1028 gzip_program = GZIP_CMD; 1029 break; 1030 case 'B': 1031 /* 1032 * Nothing to do here, this is pax default 1033 */ 1034 break; 1035 case 'C': 1036 havechd++; 1037 chdname = optarg; 1038 break; 1039 case 'H': 1040 /* 1041 * follow command line symlinks only 1042 */ 1043 Hflag = 1; 1044 break; 1045 case 'I': 1046 case 'T': 1047 if (++nincfiles > incfiles_max) { 1048 incfiles_max = nincfiles + 3; 1049 incfiles = realloc(incfiles, 1050 sizeof(*incfiles) * incfiles_max); 1051 if (incfiles == NULL) { 1052 tty_warn(0, "Unable to allocate space " 1053 "for option list"); 1054 exit(1); 1055 } 1056 } 1057 incfiles[nincfiles - 1].file = optarg; 1058 incfiles[nincfiles - 1].dir = chdname; 1059 break; 1060 case 'P': 1061 /* 1062 * do not remove leading '/' from pathnames 1063 */ 1064 rmleadslash = 0; 1065 Aflag = 1; 1066 break; 1067 case 'S': 1068 /* do nothing; we already generate sparse files */ 1069 break; 1070 case 'V': 1071 /* 1072 * semi-verbose operation mode (no listing) 1073 */ 1074 Vflag = 1; 1075 break; 1076 case 'X': 1077 /* 1078 * GNU tar compat: exclude the files listed in optarg 1079 */ 1080 if (tar_gnutar_X_compat(optarg) != 0) 1081 tar_usage(); 1082 break; 1083 case 'Z': 1084 /* 1085 * use compress. 1086 */ 1087 gzip_program = COMPRESS_CMD; 1088 break; 1089 case '0': 1090 arcname = DEV_0; 1091 break; 1092 case '1': 1093 arcname = DEV_1; 1094 break; 1095 case '4': 1096 arcname = DEV_4; 1097 break; 1098 case '5': 1099 arcname = DEV_5; 1100 break; 1101 case '7': 1102 arcname = DEV_7; 1103 break; 1104 case '8': 1105 arcname = DEV_8; 1106 break; 1107 case OPT_ATIME_PRESERVE: 1108 patime = 1; 1109 break; 1110 case OPT_UNLINK: 1111 /* Just ignore -- we always unlink first. */ 1112 break; 1113 case OPT_USE_COMPRESS_PROGRAM: 1114 gzip_program = optarg; 1115 break; 1116 case OPT_FORCE_LOCAL: 1117 forcelocal = 1; 1118 break; 1119 case OPT_INSECURE: 1120 secure = 0; 1121 break; 1122 case OPT_STRICT: 1123 /* disable gnu extensions */ 1124 is_gnutar = 0; 1125 break; 1126 case OPT_EXCLUDE: 1127 if (tar_gnutar_minus_minus_exclude(optarg) != 0) 1128 tar_usage(); 1129 break; 1130 case OPT_NORECURSE: 1131 dflag = 1; 1132 break; 1133#if !HAVE_NBTOOL_CONFIG_H 1134 case OPT_CHROOT: 1135 do_chroot = 1; 1136 break; 1137#endif 1138 case OPT_XZ: 1139 gzip_program = XZ_CMD; 1140 break; 1141 default: 1142 tar_usage(); 1143 break; 1144 } 1145 } 1146 argc -= optind; 1147 argv += optind; 1148 1149 /* Tar requires an action. */ 1150 if (act == ERROR) 1151 tar_usage(); 1152 1153 /* Traditional tar behaviour (pax uses stderr unless in list mode) */ 1154 if (fstdin == 1 && act == ARCHIVE) 1155 listf = stderr; 1156 else 1157 listf = stdout; 1158 1159 /* Traditional tar behaviour (pax wants to read file list from stdin) */ 1160 if ((act == ARCHIVE || act == APPND) && argc == 0 && nincfiles == 0) 1161 exit(0); 1162 /* 1163 * if we are writing (ARCHIVE) specify tar, otherwise run like pax 1164 * (unless -o specified) 1165 */ 1166 if (act == ARCHIVE || act == APPND) 1167 frmt = &(fsub[Oflag ? F_TAR : F_USTAR]); 1168 else if (Oflag) { 1169 if (act == EXTRACT) 1170 to_stdout = 1; 1171 else { 1172 tty_warn(1, "The -O/-o options are only valid when " 1173 "writing or extracting an archive"); 1174 tar_usage(); 1175 } 1176 } 1177 1178 /* 1179 * process the args as they are interpreted by the operation mode 1180 */ 1181 switch (act) { 1182 case LIST: 1183 case EXTRACT: 1184 default: 1185 { 1186 int sawpat = 0; 1187 int dirisnext = 0; 1188 char *file, *dir = NULL; 1189 int mustfreedir = 0; 1190 1191 while (nincfiles || *argv != NULL) { 1192 /* 1193 * If we queued up any include files, 1194 * pull them in now. Otherwise, check 1195 * for -I and -C positional flags. 1196 * Anything else must be a file to 1197 * extract. 1198 */ 1199 if (nincfiles) { 1200 file = incfiles->file; 1201 dir = incfiles->dir; 1202 mustfreedir = 0; 1203 incfiles++; 1204 nincfiles--; 1205 } else if (strcmp(*argv, "-I") == 0) { 1206 if (*++argv == NULL) 1207 break; 1208 file = *argv++; 1209 dir = chdname; 1210 mustfreedir = 0; 1211 } else { 1212 file = NULL; 1213 dir = NULL; 1214 mustfreedir = 0; 1215 } 1216 if (file != NULL) { 1217 FILE *fp; 1218 char *str; 1219 1220 if (strcmp(file, "-") == 0) 1221 fp = stdin; 1222 else if ((fp = fopen(file, "r")) == NULL) { 1223 tty_warn(1, "Unable to open file '%s' for read", file); 1224 tar_usage(); 1225 } 1226 while ((str = get_line(fp)) != NULL) { 1227 if (dirisnext) { 1228 if (dir && mustfreedir) 1229 free(dir); 1230 dir = str; 1231 mustfreedir = 1; 1232 dirisnext = 0; 1233 continue; 1234 } 1235 if (strcmp(str, "-C") == 0) { 1236 havechd++; 1237 dirisnext = 1; 1238 free(str); 1239 continue; 1240 } 1241 if (strncmp(str, "-C ", 3) == 0) { 1242 havechd++; 1243 if (dir && mustfreedir) 1244 free(dir); 1245 dir = strdup(str + 3); 1246 mustfreedir = 1; 1247 free(str); 1248 continue; 1249 } 1250 if (pat_add(str, dir, NOGLOB_MTCH) < 0) 1251 tar_usage(); 1252 sawpat = 1; 1253 } 1254 /* Bomb if given -C w/out a dir. */ 1255 if (dirisnext) 1256 tar_usage(); 1257 if (dir && mustfreedir) 1258 free(dir); 1259 if (strcmp(file, "-") != 0) 1260 fclose(fp); 1261 if (get_line_error) { 1262 tty_warn(1, "Problem with file '%s'", file); 1263 tar_usage(); 1264 } 1265 } else if (strcmp(*argv, "-C") == 0) { 1266 if (*++argv == NULL) 1267 break; 1268 chdname = *argv++; 1269 havechd++; 1270 } else if (pat_add(*argv++, chdname, 0) < 0) 1271 tar_usage(); 1272 else 1273 sawpat = 1; 1274 } 1275 /* 1276 * if patterns were added, we are doing chdir() 1277 * on a file-by-file basis, else, just one 1278 * global chdir (if any) after opening input. 1279 */ 1280 if (sawpat > 0) 1281 chdname = NULL; 1282 } 1283 break; 1284 case ARCHIVE: 1285 case APPND: 1286 if (chdname != NULL) { /* initial chdir() */ 1287 if (ftree_add(chdname, 1) < 0) 1288 tar_usage(); 1289 } 1290 1291 while (nincfiles || *argv != NULL) { 1292 char *file, *dir; 1293 1294 /* 1295 * If we queued up any include files, pull them in 1296 * now. Otherwise, check for -I and -C positional 1297 * flags. Anything else must be a file to include 1298 * in the archive. 1299 */ 1300 if (nincfiles) { 1301 file = incfiles->file; 1302 dir = incfiles->dir; 1303 incfiles++; 1304 nincfiles--; 1305 } else if (strcmp(*argv, "-I") == 0) { 1306 if (*++argv == NULL) 1307 break; 1308 file = *argv++; 1309 dir = NULL; 1310 } else { 1311 file = NULL; 1312 dir = NULL; 1313 } 1314 if (file != NULL) { 1315 FILE *fp; 1316 char *str; 1317 int dirisnext = 0; 1318 1319 /* Set directory if needed */ 1320 if (dir) { 1321 if (ftree_add(dir, 1) < 0) 1322 tar_usage(); 1323 } 1324 1325 if (strcmp(file, "-") == 0) 1326 fp = stdin; 1327 else if ((fp = fopen(file, "r")) == NULL) { 1328 tty_warn(1, "Unable to open file '%s' for read", file); 1329 tar_usage(); 1330 } 1331 while ((str = get_line(fp)) != NULL) { 1332 if (dirisnext) { 1333 if (ftree_add(str, 1) < 0) 1334 tar_usage(); 1335 dirisnext = 0; 1336 continue; 1337 } 1338 if (strcmp(str, "-C") == 0) { 1339 dirisnext = 1; 1340 continue; 1341 } 1342 if (strncmp(str, "-C ", 3) == 0) { 1343 if (ftree_add(str + 3, 1) < 0) 1344 tar_usage(); 1345 continue; 1346 } 1347 if (ftree_add(str, 0) < 0) 1348 tar_usage(); 1349 } 1350 /* Bomb if given -C w/out a dir. */ 1351 if (dirisnext) 1352 tar_usage(); 1353 if (strcmp(file, "-") != 0) 1354 fclose(fp); 1355 if (get_line_error) { 1356 tty_warn(1, "Problem with file '%s'", 1357 file); 1358 tar_usage(); 1359 } 1360 } else if (strcmp(*argv, "-C") == 0) { 1361 if (*++argv == NULL) 1362 break; 1363 if (ftree_add(*argv++, 1) < 0) 1364 tar_usage(); 1365 } else if (ftree_add(*argv++, 0) < 0) 1366 tar_usage(); 1367 } 1368 /* 1369 * no read errors allowed on updates/append operation! 1370 */ 1371 maxflt = 0; 1372 break; 1373 } 1374 if (!fstdin && ((arcname == NULL) || (*arcname == '\0'))) { 1375 arcname = getenv("TAPE"); 1376 if ((arcname == NULL) || (*arcname == '\0')) 1377 arcname = _PATH_DEFTAPE; 1378 } 1379} 1380 1381int 1382mkpath(path) 1383 char *path; 1384{ 1385 char *slash; 1386 int done = 0; 1387 1388 slash = path; 1389 1390 while (!done) { 1391 slash += strspn(slash, "/"); 1392 slash += strcspn(slash, "/"); 1393 1394 done = (*slash == '\0'); 1395 *slash = '\0'; 1396 1397 if (domkdir(path, 0777) == -1) 1398 goto out; 1399 1400 if (!done) 1401 *slash = '/'; 1402 } 1403 1404 return 0; 1405out: 1406 /* Can't create or or not a directory */ 1407 syswarn(1, errno, "Cannot create directory `%s'", path); 1408 return -1; 1409} 1410 1411 1412#ifndef NO_CPIO 1413struct option cpio_longopts[] = { 1414 { "reset-access-time", no_argument, 0, 'a' }, 1415 { "make-directories", no_argument, 0, 'd' }, 1416 { "nonmatching", no_argument, 0, 'f' }, 1417 { "extract", no_argument, 0, 'i' }, 1418 { "link", no_argument, 0, 'l' }, 1419 { "preserve-modification-time", no_argument, 0, 'm' }, 1420 { "create", no_argument, 0, 'o' }, 1421 { "pass-through", no_argument, 0, 'p' }, 1422 { "rename", no_argument, 0, 'r' }, 1423 { "list", no_argument, 0, 't' }, 1424 { "unconditional", no_argument, 0, 'u' }, 1425 { "verbose", no_argument, 0, 'v' }, 1426 { "append", no_argument, 0, 'A' }, 1427 { "pattern-file", required_argument, 0, 'E' }, 1428 { "file", required_argument, 0, 'F' }, 1429 { "force-local", no_argument, 0, 1430 OPT_FORCE_LOCAL }, 1431 { "format", required_argument, 0, 'H' }, 1432 { "dereference", no_argument, 0, 'L' }, 1433 { "swap-halfwords", no_argument, 0, 'S' }, 1434 { "summary", no_argument, 0, 'V' }, 1435 { "stats", no_argument, 0, 'V' }, 1436 { "insecure", no_argument, 0, 1437 OPT_INSECURE }, 1438 { "sparse", no_argument, 0, 1439 OPT_SPARSE }, 1440 { "xz", no_argument, 0, 1441 OPT_XZ }, 1442 1443#ifdef notyet 1444/* Not implemented */ 1445 { "null", no_argument, 0, '0' }, 1446 { "swap", no_argument, 0, 'b' }, 1447 { "numeric-uid-gid", no_argument, 0, 'n' }, 1448 { "swap-bytes", no_argument, 0, 's' }, 1449 { "message", required_argument, 0, 'M' }, 1450 { "owner", required_argument, 0 'R' }, 1451 { "dot", no_argument, 0, 'V' }, /* xxx */ 1452 { "block-size", required_argument, 0, 1453 OPT_BLOCK_SIZE }, 1454 { "no-absolute-pathnames", no_argument, 0, 1455 OPT_NO_ABSOLUTE_PATHNAMES }, 1456 { "no-preserve-owner", no_argument, 0, 1457 OPT_NO_PRESERVE_OWNER }, 1458 { "only-verify-crc", no_argument, 0, 1459 OPT_ONLY_VERIFY_CRC }, 1460 { "rsh-command", required_argument, 0, 1461 OPT_RSH_COMMAND }, 1462 { "version", no_argument, 0, 1463 OPT_VERSION }, 1464#endif 1465 { 0, 0, 0, 0 }, 1466}; 1467 1468static void 1469cpio_set_action(int op) 1470{ 1471 if ((act == APPND && op == ARCHIVE) || (act == ARCHIVE && op == APPND)) 1472 act = APPND; 1473 else if (act == EXTRACT && op == LIST) 1474 act = op; 1475 else if (act != ERROR && act != op) 1476 cpio_usage(); 1477 else 1478 act = op; 1479} 1480 1481/* 1482 * cpio_options() 1483 * look at the user specified flags. set globals as required and check if 1484 * the user specified a legal set of flags. If not, complain and exit 1485 */ 1486 1487static void 1488cpio_options(int argc, char **argv) 1489{ 1490 FSUB tmp; 1491 u_int64_t flg = 0; 1492 u_int64_t bflg = 0; 1493 int c; 1494 size_t i; 1495 FILE *fp; 1496 char *str; 1497 1498 uflag = 1; 1499 kflag = 1; 1500 pids = 1; 1501 pmode = 1; 1502 pmtime = 0; 1503 arcname = NULL; 1504 dflag = 1; 1505 nodirs = 1; 1506 /* 1507 * process option flags 1508 */ 1509 while ((c = getoldopt(argc, argv, 1510 "+abcdfiklmoprstuvzABC:E:F:H:I:LM:O:R:SVZ6", 1511 cpio_longopts, NULL)) != -1) { 1512 switch(c) { 1513 case 'a': 1514 /* 1515 * preserve access time on filesystem nodes we read 1516 */ 1517 tflag = 1; 1518 flg |= TF; 1519 break; 1520#ifdef notyet 1521 case 'b': 1522 /* 1523 * swap bytes and half-words when reading data 1524 */ 1525 break; 1526#endif 1527 case 'c': 1528 /* 1529 * ASCII cpio header 1530 */ 1531 frmt = &fsub[F_SV4CPIO]; 1532 break; 1533 case 'd': 1534 /* 1535 * create directories as needed 1536 * pax does this by default .. 1537 */ 1538 nodirs = 0; 1539 break; 1540 case 'f': 1541 /* 1542 * inverse match on patterns 1543 */ 1544 cflag = 1; 1545 flg |= CF; 1546 break; 1547 case 'i': 1548 /* 1549 * read the archive 1550 */ 1551 cpio_set_action(EXTRACT); 1552 flg |= RF; 1553 break; 1554#ifdef notyet 1555 case 'k': 1556 break; 1557#endif 1558 case 'l': 1559 /* 1560 * try to link src to dest with copy (-rw) 1561 */ 1562 lflag = 1; 1563 flg |= LF; 1564 break; 1565 case 'm': 1566 /* 1567 * preserve mtime 1568 */ 1569 flg |= PF; 1570 pmtime = 1; 1571 break; 1572 case 'o': 1573 /* 1574 * write an archive 1575 */ 1576 cpio_set_action(ARCHIVE); 1577 frmt = &(fsub[F_SV4CRC]); 1578 flg |= WF; 1579 break; 1580 case 'p': 1581 /* 1582 * cpio -p is like pax -rw 1583 */ 1584 cpio_set_action(COPY); 1585 flg |= RF | WF; 1586 break; 1587 case 'r': 1588 /* 1589 * interactive file rename 1590 */ 1591 iflag = 1; 1592 flg |= IF; 1593 break; 1594#ifdef notyet 1595 case 's': 1596 /* 1597 * swap bytes after reading data 1598 */ 1599 break; 1600#endif 1601 case 't': 1602 /* 1603 * list contents of archive 1604 */ 1605 cpio_set_action(LIST); 1606 listf = stdout; 1607 flg &= ~RF; 1608 break; 1609 case 'u': 1610 /* 1611 * don't ignore those older files 1612 */ 1613 uflag = 0; 1614 kflag = 0; 1615 flg |= UF; 1616 break; 1617 case 'v': 1618 /* 1619 * verbose operation mode 1620 */ 1621 vflag = 1; 1622 flg |= VF; 1623 break; 1624 case 'z': 1625 /* 1626 * use gzip. Non standard option. 1627 */ 1628 gzip_program = GZIP_CMD; 1629 break; 1630 case 'A': 1631 /* 1632 * append to an archive 1633 */ 1634 cpio_set_action(APPND); 1635 flg |= AF; 1636 break; 1637 case 'B': 1638 /* 1639 * set blocksize to 5120 1640 */ 1641 blksz = 5120; 1642 break; 1643 case 'C': 1644 /* 1645 * specify blocksize 1646 */ 1647 if ((blksz = (int)str_offt(optarg)) <= 0) { 1648 tty_warn(1, "Invalid block size %s", optarg); 1649 cpio_usage(); 1650 } 1651 break; 1652 case 'E': 1653 /* 1654 * file with patterns to extract or list 1655 */ 1656 if ((fp = fopen(optarg, "r")) == NULL) { 1657 tty_warn(1, "Unable to open file '%s' for read", 1658 optarg); 1659 cpio_usage(); 1660 } 1661 while ((str = get_line(fp)) != NULL) { 1662 pat_add(str, NULL, 0); 1663 } 1664 fclose(fp); 1665 if (get_line_error) { 1666 tty_warn(1, "Problem with file '%s'", optarg); 1667 cpio_usage(); 1668 } 1669 break; 1670 case 'H': 1671 /* 1672 * specify an archive format on write 1673 */ 1674 tmp.name = optarg; 1675 frmt = (FSUB *)bsearch((void *)&tmp, (void *)fsub, 1676 sizeof(fsub)/sizeof(FSUB), sizeof(FSUB), c_frmt); 1677 if (frmt != NULL) { 1678 flg |= XF; 1679 break; 1680 } 1681 tty_warn(1, "Unknown -H format: %s", optarg); 1682 (void)fputs("cpio: Known -H formats are:", stderr); 1683 for (i = 0; i < (sizeof(fsub)/sizeof(FSUB)); ++i) 1684 (void)fprintf(stderr, " %s", fsub[i].name); 1685 (void)fputs("\n\n", stderr); 1686 cpio_usage(); 1687 break; 1688 case 'F': 1689 case 'I': 1690 case 'O': 1691 /* 1692 * filename where the archive is stored 1693 */ 1694 if ((optarg[0] == '-') && (optarg[1]== '\0')) { 1695 /* 1696 * treat a - as stdin 1697 */ 1698 arcname = NULL; 1699 break; 1700 } 1701 arcname = optarg; 1702 break; 1703 case 'L': 1704 /* 1705 * follow symlinks 1706 */ 1707 Lflag = 1; 1708 flg |= CLF; 1709 break; 1710#ifdef notyet 1711 case 'M': 1712 arg = optarg; 1713 break; 1714 case 'R': 1715 arg = optarg; 1716 break; 1717#endif 1718 case 'S': 1719 /* 1720 * swap halfwords after reading data 1721 */ 1722 cpio_swp_head = 1; 1723 break; 1724#ifdef notyet 1725 case 'V': /* print a '.' for each file processed */ 1726 break; 1727#endif 1728 case 'V': 1729 /* 1730 * semi-verbose operation mode (no listing) 1731 */ 1732 Vflag = 1; 1733 flg |= VF; 1734 break; 1735 case 'Z': 1736 /* 1737 * use compress. Non standard option. 1738 */ 1739 gzip_program = COMPRESS_CMD; 1740 break; 1741 case '6': 1742 /* 1743 * process Version 6 cpio format 1744 */ 1745 frmt = &(fsub[F_BCPIO]); 1746 break; 1747 case OPT_FORCE_LOCAL: 1748 forcelocal = 1; 1749 break; 1750 case OPT_INSECURE: 1751 secure = 0; 1752 break; 1753 case OPT_SPARSE: 1754 /* do nothing; we already generate sparse files */ 1755 break; 1756 case OPT_XZ: 1757 gzip_program = XZ_CMD; 1758 break; 1759 default: 1760 cpio_usage(); 1761 break; 1762 } 1763 } 1764 1765 /* 1766 * figure out the operation mode of cpio. check that we have not been 1767 * given a bogus set of flags for the operation mode. 1768 */ 1769 if (ISLIST(flg)) { 1770 act = LIST; 1771 bflg = flg & BDLIST; 1772 } else if (ISEXTRACT(flg)) { 1773 act = EXTRACT; 1774 bflg = flg & BDEXTR; 1775 } else if (ISARCHIVE(flg)) { 1776 act = ARCHIVE; 1777 bflg = flg & BDARCH; 1778 } else if (ISAPPND(flg)) { 1779 act = APPND; 1780 bflg = flg & BDARCH; 1781 } else if (ISCOPY(flg)) { 1782 act = COPY; 1783 bflg = flg & BDCOPY; 1784 } else 1785 cpio_usage(); 1786 if (bflg) { 1787 cpio_usage(); 1788 } 1789 1790 /* 1791 * if we are writing (ARCHIVE) we use the default format if the user 1792 * did not specify a format. when we write during an APPEND, we will 1793 * adopt the format of the existing archive if none was supplied. 1794 */ 1795 if (!(flg & XF) && (act == ARCHIVE)) 1796 frmt = &(fsub[F_BCPIO]); 1797 1798 /* 1799 * process the args as they are interpreted by the operation mode 1800 */ 1801 switch (act) { 1802 case LIST: 1803 case EXTRACT: 1804 for (; optind < argc; optind++) 1805 if (pat_add(argv[optind], NULL, 0) < 0) 1806 cpio_usage(); 1807 break; 1808 case COPY: 1809 if (optind >= argc) { 1810 tty_warn(0, "Destination directory was not supplied"); 1811 cpio_usage(); 1812 } 1813 --argc; 1814 dirptr = argv[argc]; 1815 /* FALLTHROUGH */ 1816 case ARCHIVE: 1817 case APPND: 1818 if (argc != optind) { 1819 for (; optind < argc; optind++) 1820 if (ftree_add(argv[optind], 0) < 0) 1821 cpio_usage(); 1822 break; 1823 } 1824 /* 1825 * no read errors allowed on updates/append operation! 1826 */ 1827 maxflt = 0; 1828 while ((str = get_line(stdin)) != NULL) { 1829 ftree_add(str, 0); 1830 } 1831 if (get_line_error) { 1832 tty_warn(1, "Problem while reading stdin"); 1833 cpio_usage(); 1834 } 1835 break; 1836 default: 1837 cpio_usage(); 1838 break; 1839 } 1840} 1841#endif 1842 1843/* 1844 * printflg() 1845 * print out those invalid flag sets found to the user 1846 */ 1847 1848static void 1849printflg(unsigned int flg) 1850{ 1851 int nxt; 1852 1853 (void)fprintf(stderr,"%s: Invalid combination of options:", argv0); 1854 while ((nxt = ffs(flg)) != 0) { 1855 flg &= ~(1 << (nxt - 1)); 1856 (void)fprintf(stderr, " -%c", flgch[nxt - 1]); 1857 } 1858 (void)putc('\n', stderr); 1859} 1860 1861/* 1862 * c_frmt() 1863 * comparison routine used by bsearch to find the format specified 1864 * by the user 1865 */ 1866 1867static int 1868c_frmt(const void *a, const void *b) 1869{ 1870 return strcmp(((const FSUB *)a)->name, ((const FSUB *)b)->name); 1871} 1872 1873/* 1874 * opt_next() 1875 * called by format specific options routines to get each format specific 1876 * flag and value specified with -o 1877 * Return: 1878 * pointer to next OPLIST entry or NULL (end of list). 1879 */ 1880 1881OPLIST * 1882opt_next(void) 1883{ 1884 OPLIST *opt; 1885 1886 if ((opt = ophead) != NULL) 1887 ophead = ophead->fow; 1888 return opt; 1889} 1890 1891/* 1892 * bad_opt() 1893 * generic routine used to complain about a format specific options 1894 * when the format does not support options. 1895 */ 1896 1897int 1898bad_opt(void) 1899{ 1900 OPLIST *opt; 1901 1902 if (ophead == NULL) 1903 return 0; 1904 /* 1905 * print all we were given 1906 */ 1907 tty_warn(1," These format options are not supported for %s", 1908 frmt->name); 1909 while ((opt = opt_next()) != NULL) 1910 (void)fprintf(stderr, "\t%s = %s\n", opt->name, opt->value); 1911 if (strcmp(NM_TAR, argv0) == 0) 1912 tar_usage(); 1913#ifndef NO_CPIO 1914 else if (strcmp(NM_CPIO, argv0) == 0) 1915 cpio_usage(); 1916#endif 1917 else 1918 pax_usage(); 1919 return 0; 1920} 1921 1922/* 1923 * opt_add() 1924 * breaks the value supplied to -o into a option name and value. options 1925 * are given to -o in the form -o name-value,name=value 1926 * multiple -o may be specified. 1927 * Return: 1928 * 0 if format in name=value format, -1 if -o is passed junk 1929 */ 1930 1931int 1932opt_add(const char *str) 1933{ 1934 OPLIST *opt; 1935 char *frpt; 1936 char *pt; 1937 char *endpt; 1938 char *dstr; 1939 1940 if ((str == NULL) || (*str == '\0')) { 1941 tty_warn(0, "Invalid option name"); 1942 return -1; 1943 } 1944 if ((dstr = strdup(str)) == NULL) { 1945 tty_warn(0, "Unable to allocate space for option list"); 1946 return -1; 1947 } 1948 frpt = endpt = dstr; 1949 1950 /* 1951 * break into name and values pieces and stuff each one into a 1952 * OPLIST structure. When we know the format, the format specific 1953 * option function will go through this list 1954 */ 1955 while ((frpt != NULL) && (*frpt != '\0')) { 1956 if ((endpt = strchr(frpt, ',')) != NULL) 1957 *endpt = '\0'; 1958 if ((pt = strchr(frpt, '=')) == NULL) { 1959 tty_warn(0, "Invalid options format"); 1960 free(dstr); 1961 return -1; 1962 } 1963 if ((opt = (OPLIST *)malloc(sizeof(OPLIST))) == NULL) { 1964 tty_warn(0, "Unable to allocate space for option list"); 1965 free(dstr); 1966 return -1; 1967 } 1968 *pt++ = '\0'; 1969 opt->name = frpt; 1970 opt->value = pt; 1971 opt->fow = NULL; 1972 if (endpt != NULL) 1973 frpt = endpt + 1; 1974 else 1975 frpt = NULL; 1976 if (ophead == NULL) { 1977 optail = ophead = opt; 1978 continue; 1979 } 1980 optail->fow = opt; 1981 optail = opt; 1982 } 1983 return 0; 1984} 1985 1986/* 1987 * str_offt() 1988 * Convert an expression of the following forms to an off_t > 0. 1989 * 1) A positive decimal number. 1990 * 2) A positive decimal number followed by a b (mult by 512). 1991 * 3) A positive decimal number followed by a k (mult by 1024). 1992 * 4) A positive decimal number followed by a m (mult by 512). 1993 * 5) A positive decimal number followed by a w (mult by sizeof int) 1994 * 6) Two or more positive decimal numbers (with/without k,b or w). 1995 * separated by x (also * for backwards compatibility), specifying 1996 * the product of the indicated values. 1997 * Return: 1998 * 0 for an error, a positive value o.w. 1999 */ 2000 2001static off_t 2002str_offt(char *val) 2003{ 2004 char *expr; 2005 off_t num, t; 2006 2007 num = STRTOOFFT(val, &expr, 0); 2008 if ((num == OFFT_MAX) || (num <= 0) || (expr == val)) 2009 return 0; 2010 2011 switch(*expr) { 2012 case 'b': 2013 t = num; 2014 num *= 512; 2015 if (t > num) 2016 return 0; 2017 ++expr; 2018 break; 2019 case 'k': 2020 t = num; 2021 num *= 1024; 2022 if (t > num) 2023 return 0; 2024 ++expr; 2025 break; 2026 case 'm': 2027 t = num; 2028 num *= 1048576; 2029 if (t > num) 2030 return 0; 2031 ++expr; 2032 break; 2033 case 'w': 2034 t = num; 2035 num *= sizeof(int); 2036 if (t > num) 2037 return 0; 2038 ++expr; 2039 break; 2040 } 2041 2042 switch(*expr) { 2043 case '\0': 2044 break; 2045 case '*': 2046 case 'x': 2047 t = num; 2048 num *= str_offt(expr + 1); 2049 if (t > num) 2050 return 0; 2051 break; 2052 default: 2053 return 0; 2054 } 2055 return num; 2056} 2057 2058static char * 2059get_line(FILE *f) 2060{ 2061 char *name, *temp; 2062 size_t len; 2063 2064 name = fgetln(f, &len); 2065 if (!name) { 2066 get_line_error = ferror(f) ? GETLINE_FILE_CORRUPT : 0; 2067 return 0; 2068 } 2069 if (name[len-1] != '\n') 2070 len++; 2071 temp = malloc(len); 2072 if (!temp) { 2073 get_line_error = GETLINE_OUT_OF_MEM; 2074 return 0; 2075 } 2076 memcpy(temp, name, len-1); 2077 temp[len-1] = 0; 2078 return temp; 2079} 2080 2081/* 2082 * no_op() 2083 * for those option functions where the archive format has nothing to do. 2084 * Return: 2085 * 0 2086 */ 2087 2088static int 2089no_op(void) 2090{ 2091 return 0; 2092} 2093 2094/* 2095 * pax_usage() 2096 * print the usage summary to the user 2097 */ 2098 2099static void 2100pax_usage(void) 2101{ 2102 fprintf(stderr, 2103"usage: pax [-0cdjnvzVO] [-E limit] [-f archive] [-N dbdir] [-s replstr] ...\n" 2104" [-U user] ... [-G group] ... [-T [from_date][,to_date]] ...\n" 2105" [pattern ...]\n"); 2106 fprintf(stderr, 2107" pax -r [-cdijknuvzADOVYZ] [-E limit] [-f archive] [-N dbdir]\n" 2108" [-o options] ... [-p string] ... [-s replstr] ... [-U user] ...\n" 2109" [-G group] ... [-T [from_date][,to_date]] ... [pattern ...]\n"); 2110 fprintf(stderr, 2111" pax -w [-dijtuvzAHLMOPVX] [-b blocksize] [[-a] [-f archive]] [-x format]\n" 2112" [-B bytes] [-N dbdir] [-o options] ... [-s replstr] ...\n" 2113" [-U user] ... [-G group] ...\n" 2114" [-T [from_date][,to_date][/[c][m]]] ... [file ...]\n"); 2115 fprintf(stderr, 2116" pax -r -w [-dijklntuvzADHLMOPVXYZ] [-N dbdir] [-p string] ...\n" 2117" [-s replstr] ... [-U user] ... [-G group] ...\n" 2118" [-T [from_date][,to_date][/[c][m]]] ... [file ...] directory\n"); 2119 exit(1); 2120 /* NOTREACHED */ 2121} 2122 2123/* 2124 * tar_usage() 2125 * print the usage summary to the user 2126 */ 2127 2128static void 2129tar_usage(void) 2130{ 2131 (void)fputs("usage: tar [-]{crtux}[-befhjklmopqvwzHOPSXZ014578] [archive] " 2132 "[blocksize]\n" 2133 " [-C directory] [-T file] [-s replstr] " 2134 "[file ...]\n", stderr); 2135 exit(1); 2136 /* NOTREACHED */ 2137} 2138 2139#ifndef NO_CPIO 2140/* 2141 * cpio_usage() 2142 * print the usage summary to the user 2143 */ 2144 2145static void 2146cpio_usage(void) 2147{ 2148 2149 (void)fputs("usage: cpio -o [-aABcLvzZ] [-C bytes] [-F archive] " 2150 "[-H format] [-O archive]\n" 2151 " < name-list [> archive]\n" 2152 " cpio -i [-bBcdfmrsStuvzZ6] [-C bytes] [-E file] " 2153 "[-F archive] [-H format] \n" 2154 " [-I archive] " 2155 "[pattern ...] [< archive]\n" 2156 " cpio -p [-adlLmuv] destination-directory " 2157 "< name-list\n", stderr); 2158 exit(1); 2159 /* NOTREACHED */ 2160} 2161#endif 2162