1 /* 2 * Copyright (c) 1992 Keith Muller. 3 * Copyright (c) 1992, 1993 4 * The Regents of the University of California. All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * Keith Muller of the University of California, San Diego. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the University of 20 * California, Berkeley and its contributors. 21 * 4. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * @(#)options.c 8.2 (Berkeley) 4/18/94 38 * $FreeBSD: src/bin/pax/options.c,v 1.13.2.3 2001/08/01 05:03:11 obrien Exp $ 39 * $DragonFly: src/bin/pax/options.c,v 1.9 2008/06/05 18:06:30 swildner Exp $ 40 */ 41 42 #include <sys/types.h> 43 #include <sys/stat.h> 44 #include <sys/mtio.h> 45 #include <stdio.h> 46 #include <string.h> 47 #include <errno.h> 48 #include <unistd.h> 49 #include <stdlib.h> 50 #include <limits.h> 51 #include <paths.h> 52 #include "pax.h" 53 #include "options.h" 54 #include "cpio.h" 55 #include "tar.h" 56 #include "extern.h" 57 58 /* 59 * Routines which handle command line options 60 */ 61 62 static char flgch[] = FLGCH; /* list of all possible flags */ 63 static OPLIST *ophead = NULL; /* head for format specific options -x */ 64 static OPLIST *optail = NULL; /* option tail */ 65 66 static int no_op (void); 67 static void printflg (unsigned int); 68 static int c_frmt (const void *, const void *); 69 static off_t str_offt (char *); 70 static char *getline (FILE *); 71 static void pax_options (int, char **); 72 static void pax_usage (void); 73 static void tar_options (int, char **); 74 static void tar_usage (void); 75 static void cpio_options (int, char **); 76 static void cpio_usage (void); 77 static int mkpath(char *); 78 79 /* errors from getline */ 80 #define GETLINE_FILE_CORRUPT 1 81 #define GETLINE_OUT_OF_MEM 2 82 static int getline_error; 83 84 85 #define GZIP_CMD "gzip" /* command to run as gzip */ 86 #define COMPRESS_CMD "compress" /* command to run as compress */ 87 #define BZIP2_CMD "bzip2" /* command to run as gzip */ 88 89 /* 90 * Format specific routine table - MUST BE IN SORTED ORDER BY NAME 91 * (see pax.h for description of each function) 92 * 93 * name, blksz, hdsz, udev, hlk, blkagn, inhead, id, st_read, 94 * read, end_read, st_write, write, end_write, trail, 95 * rd_data, wr_data, options 96 */ 97 98 FSUB fsub[] = { 99 /* 0: OLD BINARY CPIO */ 100 {"bcpio", 5120, sizeof(HD_BCPIO), 1, 0, 0, 1, bcpio_id, cpio_strd, 101 bcpio_rd, bcpio_endrd, cpio_stwr, bcpio_wr, cpio_endwr, cpio_trail, 102 rd_wrfile, wr_rdfile, bad_opt}, 103 104 /* 1: OLD OCTAL CHARACTER CPIO */ 105 {"cpio", 5120, sizeof(HD_CPIO), 1, 0, 0, 1, cpio_id, cpio_strd, 106 cpio_rd, cpio_endrd, cpio_stwr, cpio_wr, cpio_endwr, cpio_trail, 107 rd_wrfile, wr_rdfile, bad_opt}, 108 109 /* 2: SVR4 HEX CPIO */ 110 {"sv4cpio", 5120, sizeof(HD_VCPIO), 1, 0, 0, 1, vcpio_id, cpio_strd, 111 vcpio_rd, vcpio_endrd, cpio_stwr, vcpio_wr, cpio_endwr, cpio_trail, 112 rd_wrfile, wr_rdfile, bad_opt}, 113 114 /* 3: SVR4 HEX CPIO WITH CRC */ 115 {"sv4crc", 5120, sizeof(HD_VCPIO), 1, 0, 0, 1, crc_id, crc_strd, 116 vcpio_rd, vcpio_endrd, crc_stwr, vcpio_wr, cpio_endwr, cpio_trail, 117 rd_wrfile, wr_rdfile, bad_opt}, 118 119 /* 4: OLD TAR */ 120 {"tar", 10240, BLKMULT, 0, 1, BLKMULT, 0, tar_id, no_op, 121 tar_rd, tar_endrd, no_op, tar_wr, tar_endwr, tar_trail, 122 rd_wrfile, wr_rdfile, tar_opt}, 123 124 /* 5: POSIX USTAR */ 125 {"ustar", 10240, BLKMULT, 0, 1, BLKMULT, 0, ustar_id, ustar_strd, 126 ustar_rd, tar_endrd, ustar_stwr, ustar_wr, tar_endwr, tar_trail, 127 rd_wrfile, wr_rdfile, bad_opt}, 128 }; 129 #define F_OCPIO 0 /* format when called as cpio -6 */ 130 #define F_ACPIO 1 /* format when called as cpio -c */ 131 #define F_CPIO 3 /* format when called as cpio */ 132 #define F_OTAR 4 /* format when called as tar -o */ 133 #define F_TAR 5 /* format when called as tar */ 134 #define DEFLT 5 /* default write format from list above */ 135 136 /* 137 * ford is the archive search order used by get_arc() to determine what kind 138 * of archive we are dealing with. This helps to properly id archive formats 139 * some formats may be subsets of others.... 140 */ 141 int ford[] = {5, 4, 3, 2, 1, 0, -1 }; 142 143 /* 144 * options() 145 * figure out if we are pax, tar or cpio. Call the appropriate options 146 * parser 147 */ 148 149 void 150 options(int argc, char **argv) 151 { 152 153 /* 154 * Are we acting like pax, tar or cpio (based on argv[0]) 155 */ 156 if ((argv0 = strrchr(argv[0], '/')) != NULL) 157 argv0++; 158 else 159 argv0 = argv[0]; 160 161 if (strcmp(NM_TAR, argv0) == 0) 162 return(tar_options(argc, argv)); 163 else if (strcmp(NM_CPIO, argv0) == 0) 164 return(cpio_options(argc, argv)); 165 /* 166 * assume pax as the default 167 */ 168 argv0 = NM_PAX; 169 return(pax_options(argc, argv)); 170 } 171 172 /* 173 * pax_options() 174 * look at the user specified flags. set globals as required and check if 175 * the user specified a legal set of flags. If not, complain and exit 176 */ 177 178 static void 179 pax_options(int argc, char **argv) 180 { 181 int c; 182 int i; 183 unsigned int flg = 0; 184 unsigned int bflg = 0; 185 char *pt; 186 FSUB tmp; 187 188 /* 189 * process option flags 190 */ 191 while ((c=getopt(argc,argv,"ab:cdf:iklno:p:rs:tuvwx:zB:DE:G:HLPT:U:XYZ")) 192 != -1) { 193 switch (c) { 194 case 'a': 195 /* 196 * append 197 */ 198 flg |= AF; 199 break; 200 case 'b': 201 /* 202 * specify blocksize 203 */ 204 flg |= BF; 205 if ((wrblksz = (int)str_offt(optarg)) <= 0) { 206 paxwarn(1, "Invalid block size %s", optarg); 207 pax_usage(); 208 } 209 break; 210 case 'c': 211 /* 212 * inverse match on patterns 213 */ 214 cflag = 1; 215 flg |= CF; 216 break; 217 case 'd': 218 /* 219 * match only dir on extract, not the subtree at dir 220 */ 221 dflag = 1; 222 flg |= DF; 223 break; 224 case 'f': 225 /* 226 * filename where the archive is stored 227 */ 228 arcname = optarg; 229 flg |= FF; 230 break; 231 case 'i': 232 /* 233 * interactive file rename 234 */ 235 iflag = 1; 236 flg |= IF; 237 break; 238 case 'k': 239 /* 240 * do not clobber files that exist 241 */ 242 kflag = 1; 243 flg |= KF; 244 break; 245 case 'l': 246 /* 247 * try to link src to dest with copy (-rw) 248 */ 249 lflag = 1; 250 flg |= LF; 251 break; 252 case 'n': 253 /* 254 * select first match for a pattern only 255 */ 256 nflag = 1; 257 flg |= NF; 258 break; 259 case 'o': 260 /* 261 * pass format specific options 262 */ 263 flg |= OF; 264 if (opt_add(optarg) < 0) 265 pax_usage(); 266 break; 267 case 'p': 268 /* 269 * specify file characteristic options 270 */ 271 for (pt = optarg; *pt != '\0'; ++pt) { 272 switch(*pt) { 273 case 'a': 274 /* 275 * do not preserve access time 276 */ 277 patime = 0; 278 break; 279 case 'e': 280 /* 281 * preserve user id, group id, file 282 * mode, access/modification times 283 */ 284 pids = 1; 285 pmode = 1; 286 patime = 1; 287 pmtime = 1; 288 break; 289 case 'm': 290 /* 291 * do not preserve modification time 292 */ 293 pmtime = 0; 294 break; 295 case 'o': 296 /* 297 * preserve uid/gid 298 */ 299 pids = 1; 300 break; 301 case 'p': 302 /* 303 * preserve file mode bits 304 */ 305 pmode = 1; 306 break; 307 default: 308 paxwarn(1, "Invalid -p string: %c", *pt); 309 pax_usage(); 310 break; 311 } 312 } 313 flg |= PF; 314 break; 315 case 'r': 316 /* 317 * read the archive 318 */ 319 flg |= RF; 320 break; 321 case 's': 322 /* 323 * file name substitution name pattern 324 */ 325 if (rep_add(optarg) < 0) { 326 pax_usage(); 327 break; 328 } 329 flg |= SF; 330 break; 331 case 't': 332 /* 333 * preserve access time on filesystem nodes we read 334 */ 335 tflag = 1; 336 flg |= TF; 337 break; 338 case 'u': 339 /* 340 * ignore those older files 341 */ 342 uflag = 1; 343 flg |= UF; 344 break; 345 case 'v': 346 /* 347 * verbose operation mode 348 */ 349 vflag = 1; 350 flg |= VF; 351 break; 352 case 'w': 353 /* 354 * write an archive 355 */ 356 flg |= WF; 357 break; 358 case 'x': 359 /* 360 * specify an archive format on write 361 */ 362 tmp.name = optarg; 363 if ((frmt = (FSUB *)bsearch((void *)&tmp, (void *)fsub, 364 sizeof(fsub)/sizeof(FSUB), sizeof(FSUB), c_frmt)) != NULL) { 365 flg |= XF; 366 break; 367 } 368 paxwarn(1, "Unknown -x format: %s", optarg); 369 fputs("pax: Known -x formats are:", stderr); 370 for (i = 0; i < (sizeof(fsub)/sizeof(FSUB)); ++i) 371 fprintf(stderr, " %s", fsub[i].name); 372 fputs("\n\n", stderr); 373 pax_usage(); 374 break; 375 case 'z': 376 /* 377 * use gzip. Non standard option. 378 */ 379 gzip_program = GZIP_CMD; 380 break; 381 case 'B': 382 /* 383 * non-standard option on number of bytes written on a 384 * single archive volume. 385 */ 386 if ((wrlimit = str_offt(optarg)) <= 0) { 387 paxwarn(1, "Invalid write limit %s", optarg); 388 pax_usage(); 389 } 390 if (wrlimit % BLKMULT) { 391 paxwarn(1, "Write limit is not a %d byte multiple", 392 BLKMULT); 393 pax_usage(); 394 } 395 flg |= CBF; 396 break; 397 case 'D': 398 /* 399 * On extraction check file inode change time before the 400 * modification of the file name. Non standard option. 401 */ 402 Dflag = 1; 403 flg |= CDF; 404 break; 405 case 'E': 406 /* 407 * non-standard limit on read faults 408 * 0 indicates stop after first error, values 409 * indicate a limit, "NONE" try forever 410 */ 411 flg |= CEF; 412 if (strcmp(NONE, optarg) == 0) 413 maxflt = -1; 414 else if ((maxflt = atoi(optarg)) < 0) { 415 paxwarn(1, "Error count value must be positive"); 416 pax_usage(); 417 } 418 break; 419 case 'G': 420 /* 421 * non-standard option for selecting files within an 422 * archive by group (gid or name) 423 */ 424 if (grp_add(optarg) < 0) { 425 pax_usage(); 426 break; 427 } 428 flg |= CGF; 429 break; 430 case 'H': 431 /* 432 * follow command line symlinks only 433 */ 434 Hflag = 1; 435 flg |= CHF; 436 break; 437 case 'L': 438 /* 439 * follow symlinks 440 */ 441 Lflag = 1; 442 flg |= CLF; 443 break; 444 case 'P': 445 /* 446 * do NOT follow symlinks (default) 447 */ 448 Lflag = 0; 449 flg |= CPF; 450 break; 451 case 'T': 452 /* 453 * non-standard option for selecting files within an 454 * archive by modification time range (lower,upper) 455 */ 456 if (trng_add(optarg) < 0) { 457 pax_usage(); 458 break; 459 } 460 flg |= CTF; 461 break; 462 case 'U': 463 /* 464 * non-standard option for selecting files within an 465 * archive by user (uid or name) 466 */ 467 if (usr_add(optarg) < 0) { 468 pax_usage(); 469 break; 470 } 471 flg |= CUF; 472 break; 473 case 'X': 474 /* 475 * do not pass over mount points in the file system 476 */ 477 Xflag = 1; 478 flg |= CXF; 479 break; 480 case 'Y': 481 /* 482 * On extraction check file inode change time after the 483 * modification of the file name. Non standard option. 484 */ 485 Yflag = 1; 486 flg |= CYF; 487 break; 488 case 'Z': 489 /* 490 * On extraction check modification time after the 491 * modification of the file name. Non standard option. 492 */ 493 Zflag = 1; 494 flg |= CZF; 495 break; 496 default: 497 pax_usage(); 498 break; 499 } 500 } 501 502 /* 503 * figure out the operation mode of pax read,write,extract,copy,append 504 * or list. check that we have not been given a bogus set of flags 505 * for the operation mode. 506 */ 507 if (ISLIST(flg)) { 508 act = LIST; 509 listf = stdout; 510 bflg = flg & BDLIST; 511 } else if (ISEXTRACT(flg)) { 512 act = EXTRACT; 513 bflg = flg & BDEXTR; 514 } else if (ISARCHIVE(flg)) { 515 act = ARCHIVE; 516 bflg = flg & BDARCH; 517 } else if (ISAPPND(flg)) { 518 act = APPND; 519 bflg = flg & BDARCH; 520 } else if (ISCOPY(flg)) { 521 act = COPY; 522 bflg = flg & BDCOPY; 523 } else 524 pax_usage(); 525 if (bflg) { 526 printflg(flg); 527 pax_usage(); 528 } 529 530 /* 531 * if we are writing (ARCHIVE) we use the default format if the user 532 * did not specify a format. when we write during an APPEND, we will 533 * adopt the format of the existing archive if none was supplied. 534 */ 535 if (!(flg & XF) && (act == ARCHIVE)) 536 frmt = &(fsub[DEFLT]); 537 538 /* 539 * process the args as they are interpreted by the operation mode 540 */ 541 switch (act) { 542 case LIST: 543 case EXTRACT: 544 for (; optind < argc; optind++) 545 if (pat_add(argv[optind], NULL) < 0) 546 pax_usage(); 547 break; 548 case COPY: 549 if (optind >= argc) { 550 paxwarn(0, "Destination directory was not supplied"); 551 pax_usage(); 552 } 553 --argc; 554 dirptr = argv[argc]; 555 if (mkpath(dirptr) < 0) 556 exit(1); 557 /* FALL THROUGH */ 558 case ARCHIVE: 559 case APPND: 560 for (; optind < argc; optind++) 561 if (ftree_add(argv[optind], 0) < 0) 562 pax_usage(); 563 /* 564 * no read errors allowed on updates/append operation! 565 */ 566 maxflt = 0; 567 break; 568 } 569 } 570 571 572 /* 573 * tar_options() 574 * look at the user specified flags. set globals as required and check if 575 * the user specified a legal set of flags. If not, complain and exit 576 */ 577 578 static void 579 tar_options(int argc, char **argv) 580 { 581 int c; 582 int fstdin = 0; 583 int Oflag = 0; 584 int nincfiles = 0; 585 int incfiles_max = 0; 586 struct incfile { 587 char *file; 588 char *dir; 589 }; 590 struct incfile *incfiles = NULL; 591 592 /* 593 * Set default values. 594 */ 595 rmleadslash = 1; 596 597 /* 598 * process option flags 599 */ 600 while ((c = getoldopt(argc, argv, 601 "b:cef:hjmopqruts:vwxyzBC:HI:LOPXZ014578")) != -1) { 602 switch(c) { 603 case 'b': 604 /* 605 * specify blocksize in 512-byte blocks 606 */ 607 if ((wrblksz = (int)str_offt(optarg)) <= 0) { 608 paxwarn(1, "Invalid block size %s", optarg); 609 tar_usage(); 610 } 611 wrblksz *= 512; /* XXX - check for int oflow */ 612 break; 613 case 'c': 614 /* 615 * create an archive 616 */ 617 act = ARCHIVE; 618 break; 619 case 'e': 620 /* 621 * stop after first error 622 */ 623 maxflt = 0; 624 break; 625 case 'f': 626 /* 627 * filename where the archive is stored 628 */ 629 if ((optarg[0] == '-') && (optarg[1]== '\0')) { 630 /* 631 * treat a - as stdin 632 */ 633 fstdin = 1; 634 arcname = NULL; 635 break; 636 } 637 fstdin = 0; 638 arcname = optarg; 639 break; 640 case 'h': 641 /* 642 * follow symlinks 643 */ 644 Lflag = 1; 645 break; 646 case 'j': 647 case 'y': 648 /* 649 * use bzip2. Non standard option. 650 */ 651 gzip_program = BZIP2_CMD; 652 break; 653 case 'm': 654 /* 655 * do not preserve modification time 656 */ 657 pmtime = 0; 658 break; 659 case 'o': 660 if (opt_add("write_opt=nodir") < 0) 661 tar_usage(); 662 case 'O': 663 Oflag = 1; 664 break; 665 case 'p': 666 /* 667 * preserve uid/gid and file mode, regardless of umask 668 */ 669 pmode = 1; 670 pids = 1; 671 break; 672 case 'q': 673 /* 674 * select first match for a pattern only 675 */ 676 nflag = 1; 677 break; 678 case 'r': 679 case 'u': 680 /* 681 * append to the archive 682 */ 683 act = APPND; 684 break; 685 case 's': 686 /* 687 * file name substitution name pattern 688 */ 689 if (rep_add(optarg) < 0) { 690 tar_usage(); 691 break; 692 } 693 break; 694 case 't': 695 /* 696 * list contents of the tape 697 */ 698 act = LIST; 699 break; 700 case 'v': 701 /* 702 * verbose operation mode 703 */ 704 vflag++; 705 break; 706 case 'w': 707 /* 708 * interactive file rename 709 */ 710 iflag = 1; 711 break; 712 case 'x': 713 /* 714 * extract an archive, preserving mode, 715 * and mtime if possible. 716 */ 717 act = EXTRACT; 718 pmtime = 1; 719 break; 720 case 'z': 721 /* 722 * use gzip. Non standard option. 723 */ 724 gzip_program = GZIP_CMD; 725 break; 726 case 'B': 727 /* 728 * Nothing to do here, this is pax default 729 */ 730 break; 731 case 'C': 732 chdname = optarg; 733 break; 734 case 'H': 735 /* 736 * follow command line symlinks only 737 */ 738 Hflag = 1; 739 break; 740 case 'I': 741 if (++nincfiles > incfiles_max) { 742 incfiles_max = nincfiles + 3; 743 incfiles = realloc(incfiles, 744 sizeof(*incfiles) * incfiles_max); 745 if (incfiles == NULL) { 746 paxwarn(0, "Unable to allocate space " 747 "for option list"); 748 exit(1); 749 } 750 } 751 incfiles[nincfiles - 1].file = optarg; 752 incfiles[nincfiles - 1].dir = chdname; 753 break; 754 case 'L': 755 /* 756 * follow symlinks 757 */ 758 Lflag = 1; 759 break; 760 case 'P': 761 /* 762 * do not remove leading '/' from pathnames 763 */ 764 rmleadslash = 0; 765 break; 766 case 'X': 767 /* 768 * do not pass over mount points in the file system 769 */ 770 Xflag = 1; 771 break; 772 case 'Z': 773 /* 774 * use compress. 775 */ 776 gzip_program = COMPRESS_CMD; 777 break; 778 case '0': 779 arcname = DEV_0; 780 break; 781 case '1': 782 arcname = DEV_1; 783 break; 784 case '4': 785 arcname = DEV_4; 786 break; 787 case '5': 788 arcname = DEV_5; 789 break; 790 case '7': 791 arcname = DEV_7; 792 break; 793 case '8': 794 arcname = DEV_8; 795 break; 796 default: 797 tar_usage(); 798 break; 799 } 800 } 801 argc -= optind; 802 argv += optind; 803 804 /* Traditional tar behaviour (pax uses stderr unless in list mode) */ 805 if (fstdin == 1 && act == ARCHIVE) 806 listf = stderr; 807 else 808 listf = stdout; 809 810 /* Traditional tar behaviour (pax wants to read file list from stdin) */ 811 if ((act == ARCHIVE || act == APPND) && argc == 0 && nincfiles == 0) 812 exit(0); 813 814 /* 815 * if we are writing (ARCHIVE) specify tar, otherwise run like pax 816 * (unless -o specified) 817 */ 818 if (act == ARCHIVE || act == APPND) 819 frmt = &(fsub[Oflag ? F_OTAR : F_TAR]); 820 else if (Oflag) { 821 paxwarn(1, "The -O/-o options are only valid when writing an archive"); 822 tar_usage(); /* only valid when writing */ 823 } 824 825 /* 826 * process the args as they are interpreted by the operation mode 827 */ 828 switch (act) { 829 case LIST: 830 case EXTRACT: 831 default: 832 { 833 int sawpat = 0; 834 char *file, *dir = NULL; 835 836 while (nincfiles || *argv != NULL) { 837 /* 838 * If we queued up any include files, 839 * pull them in now. Otherwise, check 840 * for -I and -C positional flags. 841 * Anything else must be a file to 842 * extract. 843 */ 844 if (nincfiles) { 845 file = incfiles->file; 846 dir = incfiles->dir; 847 incfiles++; 848 nincfiles--; 849 } else if (strcmp(*argv, "-I") == 0) { 850 if (*++argv == NULL) 851 break; 852 file = *argv++; 853 dir = chdname; 854 } else 855 file = NULL; 856 if (file != NULL) { 857 FILE *fp; 858 char *str; 859 860 if (strcmp(file, "-") == 0) 861 fp = stdin; 862 else if ((fp = fopen(file, "r")) == NULL) { 863 paxwarn(1, "Unable to open file '%s' for read", file); 864 tar_usage(); 865 } 866 while ((str = getline(fp)) != NULL) { 867 if (pat_add(str, dir) < 0) 868 tar_usage(); 869 sawpat = 1; 870 } 871 if (strcmp(file, "-") != 0) 872 fclose(fp); 873 if (getline_error) { 874 paxwarn(1, "Problem with file '%s'", file); 875 tar_usage(); 876 } 877 } else if (strcmp(*argv, "-C") == 0) { 878 if (*++argv == NULL) 879 break; 880 chdname = *argv++; 881 } else if (pat_add(*argv++, chdname) < 0) 882 tar_usage(); 883 else 884 sawpat = 1; 885 } 886 /* 887 * if patterns were added, we are doing chdir() 888 * on a file-by-file basis, else, just one 889 * global chdir (if any) after opening input. 890 */ 891 if (sawpat > 0) 892 chdname = NULL; 893 } 894 break; 895 case ARCHIVE: 896 case APPND: 897 if (chdname != NULL) { /* initial chdir() */ 898 if (ftree_add(chdname, 1) < 0) 899 tar_usage(); 900 } 901 902 while (nincfiles || *argv != NULL) { 903 char *file, *dir = NULL; 904 905 /* 906 * If we queued up any include files, pull them in 907 * now. Otherwise, check for -I and -C positional 908 * flags. Anything else must be a file to include 909 * in the archive. 910 */ 911 if (nincfiles) { 912 file = incfiles->file; 913 dir = incfiles->dir; 914 incfiles++; 915 nincfiles--; 916 } else if (strcmp(*argv, "-I") == 0) { 917 if (*++argv == NULL) 918 break; 919 file = *argv++; 920 dir = NULL; 921 } else 922 file = NULL; 923 if (file != NULL) { 924 FILE *fp; 925 char *str; 926 927 /* Set directory if needed */ 928 if (dir) { 929 if (ftree_add(dir, 1) < 0) 930 tar_usage(); 931 } 932 933 if (strcmp(file, "-") == 0) 934 fp = stdin; 935 else if ((fp = fopen(file, "r")) == NULL) { 936 paxwarn(1, "Unable to open file '%s' for read", file); 937 tar_usage(); 938 } 939 while ((str = getline(fp)) != NULL) { 940 if (ftree_add(str, 0) < 0) 941 tar_usage(); 942 } 943 if (strcmp(file, "-") != 0) 944 fclose(fp); 945 if (getline_error) { 946 paxwarn(1, "Problem with file '%s'", 947 file); 948 tar_usage(); 949 } 950 } else if (strcmp(*argv, "-C") == 0) { 951 if (*++argv == NULL) 952 break; 953 if (ftree_add(*argv++, 1) < 0) 954 tar_usage(); 955 } else if (ftree_add(*argv++, 0) < 0) 956 tar_usage(); 957 } 958 /* 959 * no read errors allowed on updates/append operation! 960 */ 961 maxflt = 0; 962 break; 963 } 964 if (!fstdin && ((arcname == NULL) || (*arcname == '\0'))) { 965 arcname = getenv("TAPE"); 966 if ((arcname == NULL) || (*arcname == '\0')) 967 arcname = _PATH_DEFTAPE; 968 } 969 } 970 971 static int 972 mkpath(char *path) 973 { 974 struct stat sb; 975 char *slash; 976 int done = 0; 977 978 slash = path; 979 980 while (!done) { 981 slash += strspn(slash, "/"); 982 slash += strcspn(slash, "/"); 983 984 done = (*slash == '\0'); 985 *slash = '\0'; 986 987 if (stat(path, &sb)) { 988 if (errno != ENOENT || mkdir(path, 0777)) { 989 paxwarn(1, "%s", path); 990 return (-1); 991 } 992 } else if (!S_ISDIR(sb.st_mode)) { 993 syswarn(1, ENOTDIR, "%s", path); 994 return (-1); 995 } 996 997 if (!done) 998 *slash = '/'; 999 } 1000 1001 return (0); 1002 } 1003 /* 1004 * cpio_options() 1005 * look at the user specified flags. set globals as required and check if 1006 * the user specified a legal set of flags. If not, complain and exit 1007 */ 1008 1009 static void 1010 cpio_options(int argc, char **argv) 1011 { 1012 int c, i; 1013 char *str; 1014 FSUB tmp; 1015 FILE *fp; 1016 1017 kflag = 1; 1018 pids = 1; 1019 pmode = 1; 1020 pmtime = 0; 1021 arcname = NULL; 1022 dflag = 1; 1023 act = -1; 1024 nodirs = 1; 1025 while ((c=getopt(argc,argv,"abcdfiklmoprstuvzABC:E:F:H:I:LO:SZ6")) != -1) 1026 switch (c) { 1027 case 'a': 1028 /* 1029 * preserve access time on files read 1030 */ 1031 tflag = 1; 1032 break; 1033 case 'b': 1034 /* 1035 * swap bytes and half-words when reading data 1036 */ 1037 break; 1038 case 'c': 1039 /* 1040 * ASCII cpio header 1041 */ 1042 frmt = &(fsub[F_ACPIO]); 1043 break; 1044 case 'd': 1045 /* 1046 * create directories as needed 1047 */ 1048 nodirs = 0; 1049 break; 1050 case 'f': 1051 /* 1052 * invert meaning of pattern list 1053 */ 1054 cflag = 1; 1055 break; 1056 case 'i': 1057 /* 1058 * restore an archive 1059 */ 1060 act = EXTRACT; 1061 break; 1062 case 'k': 1063 break; 1064 case 'l': 1065 /* 1066 * use links instead of copies when possible 1067 */ 1068 lflag = 1; 1069 break; 1070 case 'm': 1071 /* 1072 * preserve modification time 1073 */ 1074 pmtime = 1; 1075 break; 1076 case 'o': 1077 /* 1078 * create an archive 1079 */ 1080 act = ARCHIVE; 1081 frmt = &(fsub[F_CPIO]); 1082 break; 1083 case 'p': 1084 /* 1085 * copy-pass mode 1086 */ 1087 act = COPY; 1088 break; 1089 case 'r': 1090 /* 1091 * interactively rename files 1092 */ 1093 iflag = 1; 1094 break; 1095 case 's': 1096 /* 1097 * swap bytes after reading data 1098 */ 1099 break; 1100 case 't': 1101 /* 1102 * list contents of archive 1103 */ 1104 act = LIST; 1105 listf = stdout; 1106 break; 1107 case 'u': 1108 /* 1109 * replace newer files 1110 */ 1111 kflag = 0; 1112 break; 1113 case 'v': 1114 /* 1115 * verbose operation mode 1116 */ 1117 vflag = 1; 1118 break; 1119 case 'z': 1120 /* 1121 * use gzip. Non standard option. 1122 */ 1123 gzip_program = GZIP_CMD; 1124 break; 1125 case 'A': 1126 /* 1127 * append mode 1128 */ 1129 act = APPND; 1130 break; 1131 case 'B': 1132 /* 1133 * Use 5120 byte block size 1134 */ 1135 wrblksz = 5120; 1136 break; 1137 case 'C': 1138 /* 1139 * set block size in bytes 1140 */ 1141 wrblksz = atoi(optarg); 1142 break; 1143 case 'E': 1144 /* 1145 * file with patterns to extract or list 1146 */ 1147 if ((fp = fopen(optarg, "r")) == NULL) { 1148 paxwarn(1, "Unable to open file '%s' for read", optarg); 1149 cpio_usage(); 1150 } 1151 while ((str = getline(fp)) != NULL) { 1152 pat_add(str, NULL); 1153 } 1154 fclose(fp); 1155 if (getline_error) { 1156 paxwarn(1, "Problem with file '%s'", optarg); 1157 cpio_usage(); 1158 } 1159 break; 1160 case 'F': 1161 case 'I': 1162 case 'O': 1163 /* 1164 * filename where the archive is stored 1165 */ 1166 if ((optarg[0] == '-') && (optarg[1]== '\0')) { 1167 /* 1168 * treat a - as stdin 1169 */ 1170 arcname = NULL; 1171 break; 1172 } 1173 arcname = optarg; 1174 break; 1175 case 'H': 1176 /* 1177 * specify an archive format on write 1178 */ 1179 tmp.name = optarg; 1180 if ((frmt = (FSUB *)bsearch((void *)&tmp, (void *)fsub, 1181 sizeof(fsub)/sizeof(FSUB), sizeof(FSUB), c_frmt)) != NULL) 1182 break; 1183 paxwarn(1, "Unknown -H format: %s", optarg); 1184 fputs("cpio: Known -H formats are:", stderr); 1185 for (i = 0; i < (sizeof(fsub)/sizeof(FSUB)); ++i) 1186 fprintf(stderr, " %s", fsub[i].name); 1187 fputs("\n\n", stderr); 1188 cpio_usage(); 1189 break; 1190 case 'L': 1191 /* 1192 * follow symbolic links 1193 */ 1194 Lflag = 1; 1195 break; 1196 case 'S': 1197 /* 1198 * swap halfwords after reading data 1199 */ 1200 break; 1201 case 'Z': 1202 /* 1203 * use compress. Non standard option. 1204 */ 1205 gzip_program = COMPRESS_CMD; 1206 break; 1207 case '6': 1208 /* 1209 * process Version 6 cpio format 1210 */ 1211 frmt = &(fsub[F_OCPIO]); 1212 break; 1213 case '?': 1214 default: 1215 cpio_usage(); 1216 break; 1217 } 1218 argc -= optind; 1219 argv += optind; 1220 1221 /* 1222 * process the args as they are interpreted by the operation mode 1223 */ 1224 switch (act) { 1225 case LIST: 1226 case EXTRACT: 1227 while (*argv != NULL) 1228 if (pat_add(*argv++, NULL) < 0) 1229 cpio_usage(); 1230 break; 1231 case COPY: 1232 if (*argv == NULL) { 1233 paxwarn(0, "Destination directory was not supplied"); 1234 cpio_usage(); 1235 } 1236 dirptr = *argv; 1237 if (mkpath(dirptr) < 0) 1238 cpio_usage(); 1239 --argc; 1240 ++argv; 1241 /* FALL THROUGH */ 1242 case ARCHIVE: 1243 case APPND: 1244 if (*argv != NULL) 1245 cpio_usage(); 1246 /* 1247 * no read errors allowed on updates/append operation! 1248 */ 1249 maxflt = 0; 1250 while ((str = getline(stdin)) != NULL) { 1251 ftree_add(str, 0); 1252 } 1253 if (getline_error) { 1254 paxwarn(1, "Problem while reading stdin"); 1255 cpio_usage(); 1256 } 1257 break; 1258 default: 1259 cpio_usage(); 1260 break; 1261 } 1262 } 1263 1264 /* 1265 * printflg() 1266 * print out those invalid flag sets found to the user 1267 */ 1268 1269 static void 1270 printflg(unsigned int flg) 1271 { 1272 int nxt; 1273 int pos = 0; 1274 1275 fprintf(stderr,"%s: Invalid combination of options:", argv0); 1276 while ((nxt = ffs(flg)) != 0) { 1277 flg = flg >> nxt; 1278 pos += nxt; 1279 fprintf(stderr, " -%c", flgch[pos-1]); 1280 } 1281 putc('\n', stderr); 1282 } 1283 1284 /* 1285 * c_frmt() 1286 * comparison routine used by bsearch to find the format specified 1287 * by the user 1288 */ 1289 1290 static int 1291 c_frmt(const void *a, const void *b) 1292 { 1293 return(strcmp(((FSUB *)a)->name, ((FSUB *)b)->name)); 1294 } 1295 1296 /* 1297 * opt_next() 1298 * called by format specific options routines to get each format specific 1299 * flag and value specified with -o 1300 * Return: 1301 * pointer to next OPLIST entry or NULL (end of list). 1302 */ 1303 1304 OPLIST * 1305 opt_next(void) 1306 { 1307 OPLIST *opt; 1308 1309 if ((opt = ophead) != NULL) 1310 ophead = ophead->fow; 1311 return(opt); 1312 } 1313 1314 /* 1315 * bad_opt() 1316 * generic routine used to complain about a format specific options 1317 * when the format does not support options. 1318 */ 1319 1320 int 1321 bad_opt(void) 1322 { 1323 OPLIST *opt; 1324 1325 if (ophead == NULL) 1326 return(0); 1327 /* 1328 * print all we were given 1329 */ 1330 paxwarn(1,"These format options are not supported"); 1331 while ((opt = opt_next()) != NULL) 1332 fprintf(stderr, "\t%s = %s\n", opt->name, opt->value); 1333 pax_usage(); 1334 return(0); 1335 } 1336 1337 /* 1338 * opt_add() 1339 * breaks the value supplied to -o into a option name and value. options 1340 * are given to -o in the form -o name-value,name=value 1341 * multiple -o may be specified. 1342 * Return: 1343 * 0 if format in name=value format, -1 if -o is passed junk 1344 */ 1345 1346 int 1347 opt_add(char *str) 1348 { 1349 OPLIST *opt; 1350 char *frpt; 1351 char *pt; 1352 char *endpt; 1353 1354 if ((str == NULL) || (*str == '\0')) { 1355 paxwarn(0, "Invalid option name"); 1356 return(-1); 1357 } 1358 if ((str = strdup(str)) == NULL) { 1359 paxwarn(0, "Unable to allocate space for option list"); 1360 return(-1); 1361 } 1362 frpt = endpt = str; 1363 1364 /* 1365 * break into name and values pieces and stuff each one into a 1366 * OPLIST structure. When we know the format, the format specific 1367 * option function will go through this list 1368 */ 1369 while ((frpt != NULL) && (*frpt != '\0')) { 1370 if ((endpt = strchr(frpt, ',')) != NULL) 1371 *endpt = '\0'; 1372 if ((pt = strchr(frpt, '=')) == NULL) { 1373 paxwarn(0, "Invalid options format"); 1374 free(str); 1375 return(-1); 1376 } 1377 if ((opt = (OPLIST *)malloc(sizeof(OPLIST))) == NULL) { 1378 paxwarn(0, "Unable to allocate space for option list"); 1379 free(str); 1380 return(-1); 1381 } 1382 *pt++ = '\0'; 1383 opt->name = frpt; 1384 opt->value = pt; 1385 opt->fow = NULL; 1386 if (endpt != NULL) 1387 frpt = endpt + 1; 1388 else 1389 frpt = NULL; 1390 if (ophead == NULL) { 1391 optail = ophead = opt; 1392 continue; 1393 } 1394 optail->fow = opt; 1395 optail = opt; 1396 } 1397 return(0); 1398 } 1399 1400 /* 1401 * str_offt() 1402 * Convert an expression of the following forms to an off_t > 0. 1403 * 1) A positive decimal number. 1404 * 2) A positive decimal number followed by a b (mult by 512). 1405 * 3) A positive decimal number followed by a k (mult by 1024). 1406 * 4) A positive decimal number followed by a m (mult by 512). 1407 * 5) A positive decimal number followed by a w (mult by sizeof int) 1408 * 6) Two or more positive decimal numbers (with/without k,b or w). 1409 * separated by x (also * for backwards compatibility), specifying 1410 * the product of the indicated values. 1411 * Return: 1412 * 0 for an error, a positive value o.w. 1413 */ 1414 1415 static off_t 1416 str_offt(char *val) 1417 { 1418 char *expr; 1419 off_t num, t; 1420 1421 num = strtoq(val, &expr, 0); 1422 if ((num == QUAD_MAX) || (num <= 0) || (expr == val)) 1423 return(0); 1424 1425 switch(*expr) { 1426 case 'b': 1427 t = num; 1428 num *= 512; 1429 if (t > num) 1430 return(0); 1431 ++expr; 1432 break; 1433 case 'k': 1434 t = num; 1435 num *= 1024; 1436 if (t > num) 1437 return(0); 1438 ++expr; 1439 break; 1440 case 'm': 1441 t = num; 1442 num *= 1048576; 1443 if (t > num) 1444 return(0); 1445 ++expr; 1446 break; 1447 case 'w': 1448 t = num; 1449 num *= sizeof(int); 1450 if (t > num) 1451 return(0); 1452 ++expr; 1453 break; 1454 } 1455 1456 switch(*expr) { 1457 case '\0': 1458 break; 1459 case '*': 1460 case 'x': 1461 t = num; 1462 num *= str_offt(expr + 1); 1463 if (t > num) 1464 return(0); 1465 break; 1466 default: 1467 return(0); 1468 } 1469 return(num); 1470 } 1471 1472 char * 1473 getline(FILE *f) 1474 { 1475 char *name, *temp; 1476 size_t len; 1477 1478 name = fgetln(f, &len); 1479 if (!name) { 1480 getline_error = ferror(f) ? GETLINE_FILE_CORRUPT : 0; 1481 return(0); 1482 } 1483 if (name[len-1] != '\n') 1484 len++; 1485 temp = malloc(len); 1486 if (!temp) { 1487 getline_error = GETLINE_OUT_OF_MEM; 1488 return(0); 1489 } 1490 memcpy(temp, name, len-1); 1491 temp[len-1] = 0; 1492 return(temp); 1493 } 1494 1495 /* 1496 * no_op() 1497 * for those option functions where the archive format has nothing to do. 1498 * Return: 1499 * 0 1500 */ 1501 1502 static int 1503 no_op(void) 1504 { 1505 return(0); 1506 } 1507 1508 /* 1509 * pax_usage() 1510 * print the usage summary to the user 1511 */ 1512 1513 void 1514 pax_usage(void) 1515 { 1516 fputs("usage: pax [-cdnvz] [-E limit] [-f archive] ", stderr); 1517 fputs("[-s replstr] ... [-U user] ...", stderr); 1518 fputs("\n [-G group] ... ", stderr); 1519 fputs("[-T [from_date][,to_date]] ... ", stderr); 1520 fputs("[pattern ...]\n", stderr); 1521 fputs(" pax -r [-cdiknuvzDYZ] [-E limit] ", stderr); 1522 fputs("[-f archive] [-o options] ... \n", stderr); 1523 fputs(" [-p string] ... [-s replstr] ... ", stderr); 1524 fputs("[-U user] ... [-G group] ...\n ", stderr); 1525 fputs("[-T [from_date][,to_date]] ... ", stderr); 1526 fputs(" [pattern ...]\n", stderr); 1527 fputs(" pax -w [-dituvzHLPX] [-b blocksize] ", stderr); 1528 fputs("[ [-a] [-f archive] ] [-x format] \n", stderr); 1529 fputs(" [-B bytes] [-s replstr] ... ", stderr); 1530 fputs("[-o options] ... [-U user] ...", stderr); 1531 fputs("\n [-G group] ... ", stderr); 1532 fputs("[-T [from_date][,to_date][/[c][m]]] ... ", stderr); 1533 fputs("[file ...]\n", stderr); 1534 fputs(" pax -r -w [-diklntuvDHLPXYZ] ", stderr); 1535 fputs("[-p string] ... [-s replstr] ...", stderr); 1536 fputs("\n [-U user] ... [-G group] ... ", stderr); 1537 fputs("[-T [from_date][,to_date][/[c][m]]] ... ", stderr); 1538 fputs("\n [file ...] directory\n", stderr); 1539 exit(1); 1540 } 1541 1542 /* 1543 * tar_usage() 1544 * print the usage summary to the user 1545 */ 1546 1547 void 1548 tar_usage(void) 1549 { 1550 fputs("usage: tar [-]{crtux}[-befhjmopqsvwyzHLOPXZ014578] [blocksize] ", 1551 stderr); 1552 fputs("[archive] [replstr] [-C directory] [-I file] [file ...]\n", 1553 stderr); 1554 exit(1); 1555 } 1556 1557 /* 1558 * cpio_usage() 1559 * print the usage summary to the user 1560 */ 1561 1562 void 1563 cpio_usage(void) 1564 { 1565 fputs("usage: cpio -o [-aABcLvVzZ] [-C bytes] [-H format] [-O archive]\n", stderr); 1566 fputs(" [-F archive] < name-list [> archive]\n", stderr); 1567 fputs(" cpio -i [-bBcdfmnrsStuvVzZ6] [-C bytes] [-E file] [-H format]\n", stderr); 1568 fputs(" [-I archive] [-F archive] [pattern...] [< archive]\n", stderr); 1569 fputs(" cpio -p [-adlLmuvV] destination-directory < name-list\n", stderr); 1570 exit(1); 1571 } 1572