1/*- 2 * SPDX-License-Identifier: BSD-3-Clause 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 0 37#ifndef lint 38static char sccsid[] = "@(#)options.c 8.2 (Berkeley) 4/18/94"; 39#endif /* not lint */ 40#endif 41 42#include <sys/cdefs.h> 43__FBSDID("$FreeBSD$"); 44 45#include <sys/types.h> 46#include <sys/stat.h> 47#include <sys/mtio.h> 48#include <stdio.h> 49#include <string.h> 50#include <errno.h> 51#include <unistd.h> 52#include <stdlib.h> 53#include <limits.h> 54#include <paths.h> 55#include "pax.h" 56#include "options.h" 57#include "cpio.h" 58#include "tar.h" 59#include "extern.h" 60 61/* 62 * Routines which handle command line options 63 */ 64 65static char flgch[] = FLGCH; /* list of all possible flags */ 66static OPLIST *ophead = NULL; /* head for format specific options -x */ 67static OPLIST *optail = NULL; /* option tail */ 68 69static int no_op(void); 70static void printflg(unsigned int); 71static int c_frmt(const void *, const void *); 72static off_t str_offt(char *); 73static char *get_line(FILE *fp); 74static void pax_options(int, char **); 75static void pax_usage(void); 76static void tar_options(int, char **); 77static void tar_usage(void); 78static void cpio_options(int, char **); 79static void cpio_usage(void); 80 81/* errors from get_line */ 82#define GETLINE_FILE_CORRUPT 1 83#define GETLINE_OUT_OF_MEM 2 84static int get_line_error; 85 86char *chdname; 87 88#define GZIP_CMD "gzip" /* command to run as gzip */ 89#define COMPRESS_CMD "compress" /* command to run as compress */ 90#define BZIP2_CMD "bzip2" /* command to run as gzip */ 91 92/* 93 * Format specific routine table - MUST BE IN SORTED ORDER BY NAME 94 * (see pax.h for description of each function) 95 * 96 * name, blksz, hdsz, udev, hlk, blkagn, inhead, id, st_read, 97 * read, end_read, st_write, write, end_write, trail, 98 * rd_data, wr_data, options 99 */ 100 101FSUB fsub[] = { 102/* 0: OLD BINARY CPIO */ 103 {"bcpio", 5120, sizeof(HD_BCPIO), 1, 0, 0, 1, bcpio_id, cpio_strd, 104 bcpio_rd, bcpio_endrd, cpio_stwr, bcpio_wr, cpio_endwr, cpio_trail, 105 NULL, rd_wrfile, wr_rdfile, bad_opt}, 106 107/* 1: OLD OCTAL CHARACTER CPIO */ 108 {"cpio", 5120, sizeof(HD_CPIO), 1, 0, 0, 1, cpio_id, cpio_strd, 109 cpio_rd, cpio_endrd, cpio_stwr, cpio_wr, cpio_endwr, cpio_trail, 110 NULL, rd_wrfile, wr_rdfile, bad_opt}, 111 112/* 2: SVR4 HEX CPIO */ 113 {"sv4cpio", 5120, sizeof(HD_VCPIO), 1, 0, 0, 1, vcpio_id, cpio_strd, 114 vcpio_rd, vcpio_endrd, cpio_stwr, vcpio_wr, cpio_endwr, cpio_trail, 115 NULL, rd_wrfile, wr_rdfile, bad_opt}, 116 117/* 3: SVR4 HEX CPIO WITH CRC */ 118 {"sv4crc", 5120, sizeof(HD_VCPIO), 1, 0, 0, 1, crc_id, crc_strd, 119 vcpio_rd, vcpio_endrd, crc_stwr, vcpio_wr, cpio_endwr, cpio_trail, 120 NULL, rd_wrfile, wr_rdfile, bad_opt}, 121 122/* 4: OLD TAR */ 123 {"tar", 10240, BLKMULT, 0, 1, BLKMULT, 0, tar_id, no_op, 124 tar_rd, tar_endrd, no_op, tar_wr, tar_endwr, NULL, tar_trail, 125 rd_wrfile, wr_rdfile, tar_opt}, 126 127/* 5: POSIX USTAR */ 128 {"ustar", 10240, BLKMULT, 0, 1, BLKMULT, 0, ustar_id, ustar_strd, 129 ustar_rd, tar_endrd, ustar_stwr, ustar_wr, tar_endwr, NULL, tar_trail, 130 rd_wrfile, wr_rdfile, bad_opt}, 131}; 132#define F_OCPIO 0 /* format when called as cpio -6 */ 133#define F_ACPIO 1 /* format when called as cpio -c */ 134#define F_CPIO 3 /* format when called as cpio */ 135#define F_OTAR 4 /* format when called as tar -o */ 136#define F_TAR 5 /* format when called as tar */ 137#define DEFLT 5 /* default write format from list above */ 138 139/* 140 * ford is the archive search order used by get_arc() to determine what kind 141 * of archive we are dealing with. This helps to properly id archive formats 142 * some formats may be subsets of others.... 143 */ 144int ford[] = {5, 4, 3, 2, 1, 0, -1 }; 145 146/* 147 * options() 148 * figure out if we are pax, tar or cpio. Call the appropriate options 149 * parser 150 */ 151 152void 153options(int argc, char **argv) 154{ 155 156 /* 157 * Are we acting like pax, tar or cpio (based on argv[0]) 158 */ 159 if ((argv0 = strrchr(argv[0], '/')) != NULL) 160 argv0++; 161 else 162 argv0 = argv[0]; 163 164 if (strcmp(NM_TAR, argv0) == 0) { 165 tar_options(argc, argv); 166 return; 167 } 168 else if (strcmp(NM_CPIO, argv0) == 0) { 169 cpio_options(argc, argv); 170 return; 171 } 172 /* 173 * assume pax as the default 174 */ 175 argv0 = NM_PAX; 176 pax_options(argc, argv); 177 return; 178} 179 180/* 181 * pax_options() 182 * look at the user specified flags. set globals as required and check if 183 * the user specified a legal set of flags. If not, complain and exit 184 */ 185 186static void 187pax_options(int argc, char **argv) 188{ 189 int c; 190 size_t i; 191 unsigned int flg = 0; 192 unsigned int bflg = 0; 193 char *pt; 194 FSUB tmp; 195 196 /* 197 * process option flags 198 */ 199 while ((c=getopt(argc,argv,"ab:cdf:iklno:p:rs:tuvwx:zB:DE:G:HLOPT:U:XYZ")) 200 != -1) { 201 switch (c) { 202 case 'a': 203 /* 204 * append 205 */ 206 flg |= AF; 207 break; 208 case 'b': 209 /* 210 * specify blocksize 211 */ 212 flg |= BF; 213 if ((wrblksz = (int)str_offt(optarg)) <= 0) { 214 paxwarn(1, "Invalid block size %s", optarg); 215 pax_usage(); 216 } 217 break; 218 case 'c': 219 /* 220 * inverse match on patterns 221 */ 222 cflag = 1; 223 flg |= CF; 224 break; 225 case 'd': 226 /* 227 * match only dir on extract, not the subtree at dir 228 */ 229 dflag = 1; 230 flg |= DF; 231 break; 232 case 'f': 233 /* 234 * filename where the archive is stored 235 */ 236 arcname = optarg; 237 flg |= FF; 238 break; 239 case 'i': 240 /* 241 * interactive file rename 242 */ 243 iflag = 1; 244 flg |= IF; 245 break; 246 case 'k': 247 /* 248 * do not clobber files that exist 249 */ 250 kflag = 1; 251 flg |= KF; 252 break; 253 case 'l': 254 /* 255 * try to link src to dest with copy (-rw) 256 */ 257 lflag = 1; 258 flg |= LF; 259 break; 260 case 'n': 261 /* 262 * select first match for a pattern only 263 */ 264 nflag = 1; 265 flg |= NF; 266 break; 267 case 'o': 268 /* 269 * pass format specific options 270 */ 271 flg |= OF; 272 if (opt_add(optarg) < 0) 273 pax_usage(); 274 break; 275 case 'p': 276 /* 277 * specify file characteristic options 278 */ 279 for (pt = optarg; *pt != '\0'; ++pt) { 280 switch(*pt) { 281 case 'a': 282 /* 283 * do not preserve access time 284 */ 285 patime = 0; 286 break; 287 case 'e': 288 /* 289 * preserve user id, group id, file 290 * mode, access/modification times 291 */ 292 pids = 1; 293 pmode = 1; 294 patime = 1; 295 pmtime = 1; 296 break; 297 case 'm': 298 /* 299 * do not preserve modification time 300 */ 301 pmtime = 0; 302 break; 303 case 'o': 304 /* 305 * preserve uid/gid 306 */ 307 pids = 1; 308 break; 309 case 'p': 310 /* 311 * preserver file mode bits 312 */ 313 pmode = 1; 314 break; 315 default: 316 paxwarn(1, "Invalid -p string: %c", *pt); 317 pax_usage(); 318 break; 319 } 320 } 321 flg |= PF; 322 break; 323 case 'r': 324 /* 325 * read the archive 326 */ 327 flg |= RF; 328 break; 329 case 's': 330 /* 331 * file name substitution name pattern 332 */ 333 if (rep_add(optarg) < 0) { 334 pax_usage(); 335 break; 336 } 337 flg |= SF; 338 break; 339 case 't': 340 /* 341 * preserve access time on file system nodes we read 342 */ 343 tflag = 1; 344 flg |= TF; 345 break; 346 case 'u': 347 /* 348 * ignore those older files 349 */ 350 uflag = 1; 351 flg |= UF; 352 break; 353 case 'v': 354 /* 355 * verbose operation mode 356 */ 357 vflag = 1; 358 flg |= VF; 359 break; 360 case 'w': 361 /* 362 * write an archive 363 */ 364 flg |= WF; 365 break; 366 case 'x': 367 /* 368 * specify an archive format on write 369 */ 370 tmp.name = optarg; 371 if ((frmt = (FSUB *)bsearch((void *)&tmp, (void *)fsub, 372 sizeof(fsub)/sizeof(FSUB), sizeof(FSUB), c_frmt)) != NULL) { 373 flg |= XF; 374 break; 375 } 376 paxwarn(1, "Unknown -x format: %s", optarg); 377 (void)fputs("pax: Known -x formats are:", stderr); 378 for (i = 0; i < (sizeof(fsub)/sizeof(FSUB)); ++i) 379 (void)fprintf(stderr, " %s", fsub[i].name); 380 (void)fputs("\n\n", stderr); 381 pax_usage(); 382 break; 383 case 'z': 384 /* 385 * use gzip. Non standard option. 386 */ 387 gzip_program = GZIP_CMD; 388 break; 389 case 'B': 390 /* 391 * non-standard option on number of bytes written on a 392 * single archive volume. 393 */ 394 if ((wrlimit = str_offt(optarg)) <= 0) { 395 paxwarn(1, "Invalid write limit %s", optarg); 396 pax_usage(); 397 } 398 if (wrlimit % BLKMULT) { 399 paxwarn(1, "Write limit is not a %d byte multiple", 400 BLKMULT); 401 pax_usage(); 402 } 403 flg |= CBF; 404 break; 405 case 'D': 406 /* 407 * On extraction check file inode change time before the 408 * modification of the file name. Non standard option. 409 */ 410 Dflag = 1; 411 flg |= CDF; 412 break; 413 case 'E': 414 /* 415 * non-standard limit on read faults 416 * 0 indicates stop after first error, values 417 * indicate a limit, "NONE" try forever 418 */ 419 flg |= CEF; 420 if (strcmp(NONE, optarg) == 0) 421 maxflt = -1; 422 else if ((maxflt = atoi(optarg)) < 0) { 423 paxwarn(1, "Error count value must be positive"); 424 pax_usage(); 425 } 426 break; 427 case 'G': 428 /* 429 * non-standard option for selecting files within an 430 * archive by group (gid or name) 431 */ 432 if (grp_add(optarg) < 0) { 433 pax_usage(); 434 break; 435 } 436 flg |= CGF; 437 break; 438 case 'H': 439 /* 440 * follow command line symlinks only 441 */ 442 Hflag = 1; 443 flg |= CHF; 444 break; 445 case 'L': 446 /* 447 * follow symlinks 448 */ 449 Lflag = 1; 450 flg |= CLF; 451 break; 452 case 'O': 453 /* 454 * Force one volume. Non standard option. 455 */ 456 Oflag = 1; 457 break; 458 case 'P': 459 /* 460 * do NOT follow symlinks (default) 461 */ 462 Lflag = 0; 463 flg |= CPF; 464 break; 465 case 'T': 466 /* 467 * non-standard option for selecting files within an 468 * archive by modification time range (lower,upper) 469 */ 470 if (trng_add(optarg) < 0) { 471 pax_usage(); 472 break; 473 } 474 flg |= CTF; 475 break; 476 case 'U': 477 /* 478 * non-standard option for selecting files within an 479 * archive by user (uid or name) 480 */ 481 if (usr_add(optarg) < 0) { 482 pax_usage(); 483 break; 484 } 485 flg |= CUF; 486 break; 487 case 'X': 488 /* 489 * do not pass over mount points in the file system 490 */ 491 Xflag = 1; 492 flg |= CXF; 493 break; 494 case 'Y': 495 /* 496 * On extraction check file inode change time after the 497 * modification of the file name. Non standard option. 498 */ 499 Yflag = 1; 500 flg |= CYF; 501 break; 502 case 'Z': 503 /* 504 * On extraction check modification time after the 505 * modification of the file name. Non standard option. 506 */ 507 Zflag = 1; 508 flg |= CZF; 509 break; 510 default: 511 pax_usage(); 512 break; 513 } 514 } 515 516 /* 517 * figure out the operation mode of pax read,write,extract,copy,append 518 * or list. check that we have not been given a bogus set of flags 519 * for the operation mode. 520 */ 521 if (ISLIST(flg)) { 522 act = LIST; 523 listf = stdout; 524 bflg = flg & BDLIST; 525 } else if (ISEXTRACT(flg)) { 526 act = EXTRACT; 527 bflg = flg & BDEXTR; 528 } else if (ISARCHIVE(flg)) { 529 act = ARCHIVE; 530 bflg = flg & BDARCH; 531 } else if (ISAPPND(flg)) { 532 act = APPND; 533 bflg = flg & BDARCH; 534 } else if (ISCOPY(flg)) { 535 act = COPY; 536 bflg = flg & BDCOPY; 537 } else 538 pax_usage(); 539 if (bflg) { 540 printflg(flg); 541 pax_usage(); 542 } 543 544 /* 545 * if we are writing (ARCHIVE) we use the default format if the user 546 * did not specify a format. when we write during an APPEND, we will 547 * adopt the format of the existing archive if none was supplied. 548 */ 549 if (!(flg & XF) && (act == ARCHIVE)) 550 frmt = &(fsub[DEFLT]); 551 552 /* 553 * process the args as they are interpreted by the operation mode 554 */ 555 switch (act) { 556 case LIST: 557 case EXTRACT: 558 for (; optind < argc; optind++) 559 if (pat_add(argv[optind], NULL) < 0) 560 pax_usage(); 561 break; 562 case COPY: 563 if (optind >= argc) { 564 paxwarn(0, "Destination directory was not supplied"); 565 pax_usage(); 566 } 567 --argc; 568 dirptr = argv[argc]; 569 /* FALLTHROUGH */ 570 case ARCHIVE: 571 case APPND: 572 for (; optind < argc; optind++) 573 if (ftree_add(argv[optind], 0) < 0) 574 pax_usage(); 575 /* 576 * no read errors allowed on updates/append operation! 577 */ 578 maxflt = 0; 579 break; 580 } 581} 582 583 584/* 585 * tar_options() 586 * look at the user specified flags. set globals as required and check if 587 * the user specified a legal set of flags. If not, complain and exit 588 */ 589 590static void 591tar_options(int argc, char **argv) 592{ 593 int c; 594 int fstdin = 0; 595 int tar_Oflag = 0; 596 int nincfiles = 0; 597 int incfiles_max = 0; 598 struct incfile { 599 char *file; 600 char *dir; 601 }; 602 struct incfile *incfiles = NULL; 603 604 /* 605 * Set default values. 606 */ 607 rmleadslash = 1; 608 609 /* 610 * process option flags 611 */ 612 while ((c = getoldopt(argc, argv, 613 "b:cef:hjmopqruts:vwxyzBC:HI:LOPXZ014578")) != -1) { 614 switch(c) { 615 case 'b': 616 /* 617 * specify blocksize in 512-byte blocks 618 */ 619 if ((wrblksz = (int)str_offt(optarg)) <= 0) { 620 paxwarn(1, "Invalid block size %s", optarg); 621 tar_usage(); 622 } 623 wrblksz *= 512; /* XXX - check for int oflow */ 624 break; 625 case 'c': 626 /* 627 * create an archive 628 */ 629 act = ARCHIVE; 630 break; 631 case 'e': 632 /* 633 * stop after first error 634 */ 635 maxflt = 0; 636 break; 637 case 'f': 638 /* 639 * filename where the archive is stored 640 */ 641 if ((optarg[0] == '-') && (optarg[1]== '\0')) { 642 /* 643 * treat a - as stdin 644 */ 645 fstdin = 1; 646 arcname = NULL; 647 break; 648 } 649 fstdin = 0; 650 arcname = optarg; 651 break; 652 case 'h': 653 /* 654 * follow symlinks 655 */ 656 Lflag = 1; 657 break; 658 case 'j': 659 case 'y': 660 /* 661 * use bzip2. Non standard option. 662 */ 663 gzip_program = BZIP2_CMD; 664 break; 665 case 'm': 666 /* 667 * do not preserve modification time 668 */ 669 pmtime = 0; 670 break; 671 case 'o': 672 if (opt_add("write_opt=nodir") < 0) 673 tar_usage(); 674 case 'O': 675 tar_Oflag = 1; 676 break; 677 case 'p': 678 /* 679 * preserve uid/gid and file mode, regardless of umask 680 */ 681 pmode = 1; 682 pids = 1; 683 break; 684 case 'q': 685 /* 686 * select first match for a pattern only 687 */ 688 nflag = 1; 689 break; 690 case 'r': 691 case 'u': 692 /* 693 * append to the archive 694 */ 695 act = APPND; 696 break; 697 case 's': 698 /* 699 * file name substitution name pattern 700 */ 701 if (rep_add(optarg) < 0) { 702 tar_usage(); 703 break; 704 } 705 break; 706 case 't': 707 /* 708 * list contents of the tape 709 */ 710 act = LIST; 711 break; 712 case 'v': 713 /* 714 * verbose operation mode 715 */ 716 vflag++; 717 break; 718 case 'w': 719 /* 720 * interactive file rename 721 */ 722 iflag = 1; 723 break; 724 case 'x': 725 /* 726 * extract an archive, preserving mode, 727 * and mtime if possible. 728 */ 729 act = EXTRACT; 730 pmtime = 1; 731 break; 732 case 'z': 733 /* 734 * use gzip. Non standard option. 735 */ 736 gzip_program = GZIP_CMD; 737 break; 738 case 'B': 739 /* 740 * Nothing to do here, this is pax default 741 */ 742 break; 743 case 'C': 744 chdname = optarg; 745 break; 746 case 'H': 747 /* 748 * follow command line symlinks only 749 */ 750 Hflag = 1; 751 break; 752 case 'I': 753 if (++nincfiles > incfiles_max) { 754 incfiles_max = nincfiles + 3; 755 incfiles = realloc(incfiles, 756 sizeof(*incfiles) * incfiles_max); 757 if (incfiles == NULL) { 758 paxwarn(0, "Unable to allocate space " 759 "for option list"); 760 exit(1); 761 } 762 } 763 incfiles[nincfiles - 1].file = optarg; 764 incfiles[nincfiles - 1].dir = chdname; 765 break; 766 case 'L': 767 /* 768 * follow symlinks 769 */ 770 Lflag = 1; 771 break; 772 case 'P': 773 /* 774 * do not remove leading '/' from pathnames 775 */ 776 rmleadslash = 0; 777 break; 778 case 'X': 779 /* 780 * do not pass over mount points in the file system 781 */ 782 Xflag = 1; 783 break; 784 case 'Z': 785 /* 786 * use compress. 787 */ 788 gzip_program = COMPRESS_CMD; 789 break; 790 case '0': 791 arcname = DEV_0; 792 break; 793 case '1': 794 arcname = DEV_1; 795 break; 796 case '4': 797 arcname = DEV_4; 798 break; 799 case '5': 800 arcname = DEV_5; 801 break; 802 case '7': 803 arcname = DEV_7; 804 break; 805 case '8': 806 arcname = DEV_8; 807 break; 808 default: 809 tar_usage(); 810 break; 811 } 812 } 813 argc -= optind; 814 argv += optind; 815 816 /* Traditional tar behaviour (pax uses stderr unless in list mode) */ 817 if (fstdin == 1 && act == ARCHIVE) 818 listf = stderr; 819 else 820 listf = stdout; 821 822 /* Traditional tar behaviour (pax wants to read file list from stdin) */ 823 if ((act == ARCHIVE || act == APPND) && argc == 0 && nincfiles == 0) 824 exit(0); 825 826 /* 827 * if we are writing (ARCHIVE) specify tar, otherwise run like pax 828 * (unless -o specified) 829 */ 830 if (act == ARCHIVE || act == APPND) 831 frmt = &(fsub[tar_Oflag ? F_OTAR : F_TAR]); 832 else if (tar_Oflag) { 833 paxwarn(1, "The -O/-o options are only valid when writing an archive"); 834 tar_usage(); /* only valid when writing */ 835 } 836 837 /* 838 * process the args as they are interpreted by the operation mode 839 */ 840 switch (act) { 841 case LIST: 842 case EXTRACT: 843 default: 844 { 845 int sawpat = 0; 846 char *file, *dir = NULL; 847 848 while (nincfiles || *argv != NULL) { 849 /* 850 * If we queued up any include files, 851 * pull them in now. Otherwise, check 852 * for -I and -C positional flags. 853 * Anything else must be a file to 854 * extract. 855 */ 856 if (nincfiles) { 857 file = incfiles->file; 858 dir = incfiles->dir; 859 incfiles++; 860 nincfiles--; 861 } else if (strcmp(*argv, "-I") == 0) { 862 if (*++argv == NULL) 863 break; 864 file = *argv++; 865 dir = chdname; 866 } else 867 file = NULL; 868 if (file != NULL) { 869 FILE *fp; 870 char *str; 871 872 if (strcmp(file, "-") == 0) 873 fp = stdin; 874 else if ((fp = fopen(file, "r")) == NULL) { 875 paxwarn(1, "Unable to open file '%s' for read", file); 876 tar_usage(); 877 } 878 while ((str = get_line(fp)) != NULL) { 879 if (pat_add(str, dir) < 0) 880 tar_usage(); 881 sawpat = 1; 882 } 883 if (strcmp(file, "-") != 0) 884 fclose(fp); 885 if (get_line_error) { 886 paxwarn(1, "Problem with file '%s'", file); 887 tar_usage(); 888 } 889 } else if (strcmp(*argv, "-C") == 0) { 890 if (*++argv == NULL) 891 break; 892 chdname = *argv++; 893 } else if (pat_add(*argv++, chdname) < 0) 894 tar_usage(); 895 else 896 sawpat = 1; 897 } 898 /* 899 * if patterns were added, we are doing chdir() 900 * on a file-by-file basis, else, just one 901 * global chdir (if any) after opening input. 902 */ 903 if (sawpat > 0) 904 chdname = NULL; 905 } 906 break; 907 case ARCHIVE: 908 case APPND: 909 if (chdname != NULL) { /* initial chdir() */ 910 if (ftree_add(chdname, 1) < 0) 911 tar_usage(); 912 } 913 914 while (nincfiles || *argv != NULL) { 915 char *file, *dir = NULL; 916 917 /* 918 * If we queued up any include files, pull them in 919 * now. Otherwise, check for -I and -C positional 920 * flags. Anything else must be a file to include 921 * in the archive. 922 */ 923 if (nincfiles) { 924 file = incfiles->file; 925 dir = incfiles->dir; 926 incfiles++; 927 nincfiles--; 928 } else if (strcmp(*argv, "-I") == 0) { 929 if (*++argv == NULL) 930 break; 931 file = *argv++; 932 dir = NULL; 933 } else 934 file = NULL; 935 if (file != NULL) { 936 FILE *fp; 937 char *str; 938 939 /* Set directory if needed */ 940 if (dir) { 941 if (ftree_add(dir, 1) < 0) 942 tar_usage(); 943 } 944 945 if (strcmp(file, "-") == 0) 946 fp = stdin; 947 else if ((fp = fopen(file, "r")) == NULL) { 948 paxwarn(1, "Unable to open file '%s' for read", file); 949 tar_usage(); 950 } 951 while ((str = get_line(fp)) != NULL) { 952 if (ftree_add(str, 0) < 0) 953 tar_usage(); 954 } 955 if (strcmp(file, "-") != 0) 956 fclose(fp); 957 if (get_line_error) { 958 paxwarn(1, "Problem with file '%s'", 959 file); 960 tar_usage(); 961 } 962 } else if (strcmp(*argv, "-C") == 0) { 963 if (*++argv == NULL) 964 break; 965 if (ftree_add(*argv++, 1) < 0) 966 tar_usage(); 967 } else if (ftree_add(*argv++, 0) < 0) 968 tar_usage(); 969 } 970 /* 971 * no read errors allowed on updates/append operation! 972 */ 973 maxflt = 0; 974 break; 975 } 976 if (!fstdin && ((arcname == NULL) || (*arcname == '\0'))) { 977 arcname = getenv("TAPE"); 978 if ((arcname == NULL) || (*arcname == '\0')) 979 arcname = _PATH_DEFTAPE; 980 } 981} 982 983static int 984mkpath(char *path) 985{ 986 struct stat sb; 987 char *slash; 988 int done = 0; 989 990 slash = path; 991 992 while (!done) { 993 slash += strspn(slash, "/"); 994 slash += strcspn(slash, "/"); 995 996 done = (*slash == '\0'); 997 *slash = '\0'; 998 999 if (stat(path, &sb)) { 1000 if (errno != ENOENT || mkdir(path, 0777)) { 1001 paxwarn(1, "%s", path); 1002 return (-1); 1003 } 1004 } else if (!S_ISDIR(sb.st_mode)) { 1005 syswarn(1, ENOTDIR, "%s", path); 1006 return (-1); 1007 } 1008 1009 if (!done) 1010 *slash = '/'; 1011 } 1012 1013 return (0); 1014} 1015/* 1016 * cpio_options() 1017 * look at the user specified flags. set globals as required and check if 1018 * the user specified a legal set of flags. If not, complain and exit 1019 */ 1020 1021static void 1022cpio_options(int argc, char **argv) 1023{ 1024 int c; 1025 size_t i; 1026 char *str; 1027 FSUB tmp; 1028 FILE *fp; 1029 1030 kflag = 1; 1031 pids = 1; 1032 pmode = 1; 1033 pmtime = 0; 1034 arcname = NULL; 1035 dflag = 1; 1036 act = -1; 1037 nodirs = 1; 1038 while ((c=getopt(argc,argv,"abcdfiklmoprstuvzABC:E:F:H:I:LO:SZ6")) != -1) 1039 switch (c) { 1040 case 'a': 1041 /* 1042 * preserve access time on files read 1043 */ 1044 tflag = 1; 1045 break; 1046 case 'b': 1047 /* 1048 * swap bytes and half-words when reading data 1049 */ 1050 break; 1051 case 'c': 1052 /* 1053 * ASCII cpio header 1054 */ 1055 frmt = &(fsub[F_ACPIO]); 1056 break; 1057 case 'd': 1058 /* 1059 * create directories as needed 1060 */ 1061 nodirs = 0; 1062 break; 1063 case 'f': 1064 /* 1065 * invert meaning of pattern list 1066 */ 1067 cflag = 1; 1068 break; 1069 case 'i': 1070 /* 1071 * restore an archive 1072 */ 1073 act = EXTRACT; 1074 break; 1075 case 'k': 1076 break; 1077 case 'l': 1078 /* 1079 * use links instead of copies when possible 1080 */ 1081 lflag = 1; 1082 break; 1083 case 'm': 1084 /* 1085 * preserve modification time 1086 */ 1087 pmtime = 1; 1088 break; 1089 case 'o': 1090 /* 1091 * create an archive 1092 */ 1093 act = ARCHIVE; 1094 frmt = &(fsub[F_CPIO]); 1095 break; 1096 case 'p': 1097 /* 1098 * copy-pass mode 1099 */ 1100 act = COPY; 1101 break; 1102 case 'r': 1103 /* 1104 * interactively rename files 1105 */ 1106 iflag = 1; 1107 break; 1108 case 's': 1109 /* 1110 * swap bytes after reading data 1111 */ 1112 break; 1113 case 't': 1114 /* 1115 * list contents of archive 1116 */ 1117 act = LIST; 1118 listf = stdout; 1119 break; 1120 case 'u': 1121 /* 1122 * replace newer files 1123 */ 1124 kflag = 0; 1125 break; 1126 case 'v': 1127 /* 1128 * verbose operation mode 1129 */ 1130 vflag = 1; 1131 break; 1132 case 'z': 1133 /* 1134 * use gzip. Non standard option. 1135 */ 1136 gzip_program = GZIP_CMD; 1137 break; 1138 case 'A': 1139 /* 1140 * append mode 1141 */ 1142 act = APPND; 1143 break; 1144 case 'B': 1145 /* 1146 * Use 5120 byte block size 1147 */ 1148 wrblksz = 5120; 1149 break; 1150 case 'C': 1151 /* 1152 * set block size in bytes 1153 */ 1154 wrblksz = atoi(optarg); 1155 break; 1156 case 'E': 1157 /* 1158 * file with patterns to extract or list 1159 */ 1160 if ((fp = fopen(optarg, "r")) == NULL) { 1161 paxwarn(1, "Unable to open file '%s' for read", optarg); 1162 cpio_usage(); 1163 } 1164 while ((str = get_line(fp)) != NULL) { 1165 pat_add(str, NULL); 1166 } 1167 fclose(fp); 1168 if (get_line_error) { 1169 paxwarn(1, "Problem with file '%s'", optarg); 1170 cpio_usage(); 1171 } 1172 break; 1173 case 'F': 1174 case 'I': 1175 case 'O': 1176 /* 1177 * filename where the archive is stored 1178 */ 1179 if ((optarg[0] == '-') && (optarg[1]== '\0')) { 1180 /* 1181 * treat a - as stdin 1182 */ 1183 arcname = NULL; 1184 break; 1185 } 1186 arcname = optarg; 1187 break; 1188 case 'H': 1189 /* 1190 * specify an archive format on write 1191 */ 1192 tmp.name = optarg; 1193 if ((frmt = (FSUB *)bsearch((void *)&tmp, (void *)fsub, 1194 sizeof(fsub)/sizeof(FSUB), sizeof(FSUB), c_frmt)) != NULL) 1195 break; 1196 paxwarn(1, "Unknown -H format: %s", optarg); 1197 (void)fputs("cpio: Known -H formats are:", stderr); 1198 for (i = 0; i < (sizeof(fsub)/sizeof(FSUB)); ++i) 1199 (void)fprintf(stderr, " %s", fsub[i].name); 1200 (void)fputs("\n\n", stderr); 1201 cpio_usage(); 1202 break; 1203 case 'L': 1204 /* 1205 * follow symbolic links 1206 */ 1207 Lflag = 1; 1208 break; 1209 case 'S': 1210 /* 1211 * swap halfwords after reading data 1212 */ 1213 break; 1214 case 'Z': 1215 /* 1216 * use compress. Non standard option. 1217 */ 1218 gzip_program = COMPRESS_CMD; 1219 break; 1220 case '6': 1221 /* 1222 * process Version 6 cpio format 1223 */ 1224 frmt = &(fsub[F_OCPIO]); 1225 break; 1226 case '?': 1227 default: 1228 cpio_usage(); 1229 break; 1230 } 1231 argc -= optind; 1232 argv += optind; 1233 1234 /* 1235 * process the args as they are interpreted by the operation mode 1236 */ 1237 switch (act) { 1238 case LIST: 1239 case EXTRACT: 1240 while (*argv != NULL) 1241 if (pat_add(*argv++, NULL) < 0) 1242 cpio_usage(); 1243 break; 1244 case COPY: 1245 if (*argv == NULL) { 1246 paxwarn(0, "Destination directory was not supplied"); 1247 cpio_usage(); 1248 } 1249 dirptr = *argv; 1250 if (mkpath(dirptr) < 0) 1251 cpio_usage(); 1252 --argc; 1253 ++argv; 1254 /* FALLTHROUGH */ 1255 case ARCHIVE: 1256 case APPND: 1257 if (*argv != NULL) 1258 cpio_usage(); 1259 /* 1260 * no read errors allowed on updates/append operation! 1261 */ 1262 maxflt = 0; 1263 while ((str = get_line(stdin)) != NULL) { 1264 ftree_add(str, 0); 1265 } 1266 if (get_line_error) { 1267 paxwarn(1, "Problem while reading stdin"); 1268 cpio_usage(); 1269 } 1270 break; 1271 default: 1272 cpio_usage(); 1273 break; 1274 } 1275} 1276 1277/* 1278 * printflg() 1279 * print out those invalid flag sets found to the user 1280 */ 1281 1282static void 1283printflg(unsigned int flg) 1284{ 1285 int nxt; 1286 int pos = 0; 1287 1288 (void)fprintf(stderr,"%s: Invalid combination of options:", argv0); 1289 while ((nxt = ffs(flg)) != 0) { 1290 flg = flg >> nxt; 1291 pos += nxt; 1292 (void)fprintf(stderr, " -%c", flgch[pos-1]); 1293 } 1294 (void)putc('\n', stderr); 1295} 1296 1297/* 1298 * c_frmt() 1299 * comparison routine used by bsearch to find the format specified 1300 * by the user 1301 */ 1302 1303static int 1304c_frmt(const void *a, const void *b) 1305{ 1306 return(strcmp(((const FSUB *)a)->name, ((const FSUB *)b)->name)); 1307} 1308 1309/* 1310 * opt_next() 1311 * called by format specific options routines to get each format specific 1312 * flag and value specified with -o 1313 * Return: 1314 * pointer to next OPLIST entry or NULL (end of list). 1315 */ 1316 1317OPLIST * 1318opt_next(void) 1319{ 1320 OPLIST *opt; 1321 1322 if ((opt = ophead) != NULL) 1323 ophead = ophead->fow; 1324 return(opt); 1325} 1326 1327/* 1328 * bad_opt() 1329 * generic routine used to complain about a format specific options 1330 * when the format does not support options. 1331 */ 1332 1333int 1334bad_opt(void) 1335{ 1336 OPLIST *opt; 1337 1338 if (ophead == NULL) 1339 return(0); 1340 /* 1341 * print all we were given 1342 */ 1343 paxwarn(1,"These format options are not supported"); 1344 while ((opt = opt_next()) != NULL) 1345 (void)fprintf(stderr, "\t%s = %s\n", opt->name, opt->value); 1346 pax_usage(); 1347 return(0); 1348} 1349 1350/* 1351 * opt_add() 1352 * breaks the value supplied to -o into an option name and value. Options 1353 * are given to -o in the form -o name-value,name=value 1354 * multiple -o may be specified. 1355 * Return: 1356 * 0 if format in name=value format, -1 if -o is passed junk. 1357 */ 1358 1359int 1360opt_add(const char *str) 1361{ 1362 OPLIST *opt; 1363 char *frpt; 1364 char *pt; 1365 char *endpt; 1366 char *lstr; 1367 1368 if ((str == NULL) || (*str == '\0')) { 1369 paxwarn(0, "Invalid option name"); 1370 return(-1); 1371 } 1372 if ((lstr = strdup(str)) == NULL) { 1373 paxwarn(0, "Unable to allocate space for option list"); 1374 return(-1); 1375 } 1376 frpt = endpt = lstr; 1377 1378 /* 1379 * break into name and values pieces and stuff each one into a 1380 * OPLIST structure. When we know the format, the format specific 1381 * option function will go through this list 1382 */ 1383 while ((frpt != NULL) && (*frpt != '\0')) { 1384 if ((endpt = strchr(frpt, ',')) != NULL) 1385 *endpt = '\0'; 1386 if ((pt = strchr(frpt, '=')) == NULL) { 1387 paxwarn(0, "Invalid options format"); 1388 free(lstr); 1389 return(-1); 1390 } 1391 if ((opt = (OPLIST *)malloc(sizeof(OPLIST))) == NULL) { 1392 paxwarn(0, "Unable to allocate space for option list"); 1393 free(lstr); 1394 return(-1); 1395 } 1396 lstr = NULL; /* parts of string going onto the OPLIST */ 1397 *pt++ = '\0'; 1398 opt->name = frpt; 1399 opt->value = pt; 1400 opt->fow = NULL; 1401 if (endpt != NULL) 1402 frpt = endpt + 1; 1403 else 1404 frpt = NULL; 1405 if (ophead == NULL) { 1406 optail = ophead = opt; 1407 continue; 1408 } 1409 optail->fow = opt; 1410 optail = opt; 1411 } 1412 free(lstr); 1413 return(0); 1414} 1415 1416/* 1417 * str_offt() 1418 * Convert an expression of the following forms to an off_t > 0. 1419 * 1) A positive decimal number. 1420 * 2) A positive decimal number followed by a b (mult by 512). 1421 * 3) A positive decimal number followed by a k (mult by 1024). 1422 * 4) A positive decimal number followed by a m (mult by 512). 1423 * 5) A positive decimal number followed by a w (mult by sizeof int) 1424 * 6) Two or more positive decimal numbers (with/without k,b or w). 1425 * separated by x (also * for backwards compatibility), specifying 1426 * the product of the indicated values. 1427 * Return: 1428 * 0 for an error, a positive value o.w. 1429 */ 1430 1431static off_t 1432str_offt(char *val) 1433{ 1434 char *expr; 1435 off_t num, t; 1436 1437# ifdef NET2_STAT 1438 num = strtol(val, &expr, 0); 1439 if ((num == LONG_MAX) || (num <= 0) || (expr == val)) 1440# else 1441 num = strtoq(val, &expr, 0); 1442 if ((num == QUAD_MAX) || (num <= 0) || (expr == val)) 1443# endif 1444 return(0); 1445 1446 switch(*expr) { 1447 case 'b': 1448 t = num; 1449 num *= 512; 1450 if (t > num) 1451 return(0); 1452 ++expr; 1453 break; 1454 case 'k': 1455 t = num; 1456 num *= 1024; 1457 if (t > num) 1458 return(0); 1459 ++expr; 1460 break; 1461 case 'm': 1462 t = num; 1463 num *= 1048576; 1464 if (t > num) 1465 return(0); 1466 ++expr; 1467 break; 1468 case 'w': 1469 t = num; 1470 num *= sizeof(int); 1471 if (t > num) 1472 return(0); 1473 ++expr; 1474 break; 1475 } 1476 1477 switch(*expr) { 1478 case '\0': 1479 break; 1480 case '*': 1481 case 'x': 1482 t = num; 1483 num *= str_offt(expr + 1); 1484 if (t > num) 1485 return(0); 1486 break; 1487 default: 1488 return(0); 1489 } 1490 return(num); 1491} 1492 1493char * 1494get_line(FILE *f) 1495{ 1496 char *name, *temp; 1497 size_t len; 1498 1499 name = fgetln(f, &len); 1500 if (!name) { 1501 get_line_error = ferror(f) ? GETLINE_FILE_CORRUPT : 0; 1502 return(0); 1503 } 1504 if (name[len-1] != '\n') 1505 len++; 1506 temp = malloc(len); 1507 if (!temp) { 1508 get_line_error = GETLINE_OUT_OF_MEM; 1509 return(0); 1510 } 1511 memcpy(temp, name, len-1); 1512 temp[len-1] = 0; 1513 return(temp); 1514} 1515 1516/* 1517 * no_op() 1518 * for those option functions where the archive format has nothing to do. 1519 * Return: 1520 * 0 1521 */ 1522 1523static int 1524no_op(void) 1525{ 1526 return(0); 1527} 1528 1529/* 1530 * pax_usage() 1531 * print the usage summary to the user 1532 */ 1533 1534void 1535pax_usage(void) 1536{ 1537 (void)fputs("usage: pax [-cdnOvz] [-E limit] [-f archive] ", stderr); 1538 (void)fputs("[-s replstr] ... [-U user] ...", stderr); 1539 (void)fputs("\n [-G group] ... ", stderr); 1540 (void)fputs("[-T [from_date][,to_date]] ... ", stderr); 1541 (void)fputs("[pattern ...]\n", stderr); 1542 (void)fputs(" pax -r [-cdiknOuvzDYZ] [-E limit] ", stderr); 1543 (void)fputs("[-f archive] [-o options] ... \n", stderr); 1544 (void)fputs(" [-p string] ... [-s replstr] ... ", stderr); 1545 (void)fputs("[-U user] ... [-G group] ...\n ", stderr); 1546 (void)fputs("[-T [from_date][,to_date]] ... ", stderr); 1547 (void)fputs(" [pattern ...]\n", stderr); 1548 (void)fputs(" pax -w [-dituvzHLOPX] [-b blocksize] ", stderr); 1549 (void)fputs("[ [-a] [-f archive] ] [-x format] \n", stderr); 1550 (void)fputs(" [-B bytes] [-s replstr] ... ", stderr); 1551 (void)fputs("[-o options] ... [-U user] ...", stderr); 1552 (void)fputs("\n [-G group] ... ", stderr); 1553 (void)fputs("[-T [from_date][,to_date][/[c][m]]] ... ", stderr); 1554 (void)fputs("[file ...]\n", stderr); 1555 (void)fputs(" pax -r -w [-diklntuvDHLOPXYZ] ", stderr); 1556 (void)fputs("[-p string] ... [-s replstr] ...", stderr); 1557 (void)fputs("\n [-U user] ... [-G group] ... ", stderr); 1558 (void)fputs("[-T [from_date][,to_date][/[c][m]]] ... ", stderr); 1559 (void)fputs("\n [file ...] directory\n", stderr); 1560 exit(1); 1561} 1562 1563/* 1564 * tar_usage() 1565 * print the usage summary to the user 1566 */ 1567 1568void 1569tar_usage(void) 1570{ 1571 (void)fputs("usage: tar [-]{crtux}[-befhjmopqsvwyzHLOPXZ014578] [blocksize] ", 1572 stderr); 1573 (void)fputs("[archive] [replstr] [-C directory] [-I file] [file ...]\n", 1574 stderr); 1575 exit(1); 1576} 1577 1578/* 1579 * cpio_usage() 1580 * print the usage summary to the user 1581 */ 1582 1583void 1584cpio_usage(void) 1585{ 1586 (void)fputs("usage: cpio -o [-aABcLvVzZ] [-C bytes] [-H format] [-O archive]\n", stderr); 1587 (void)fputs(" [-F archive] < name-list [> archive]\n", stderr); 1588 (void)fputs(" cpio -i [-bBcdfmnrsStuvVzZ6] [-C bytes] [-E file] [-H format]\n", stderr); 1589 (void)fputs(" [-I archive] [-F archive] [pattern...] [< archive]\n", stderr); 1590 (void)fputs(" cpio -p [-adlLmuvV] destination-directory < name-list\n", stderr); 1591 exit(1); 1592} 1593