options.c revision 1.115
1 /* $NetBSD: options.c,v 1.115 2013/11/14 04:00:48 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 1992 Keith Muller. 5 * Copyright (c) 1992, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * Keith Muller of the University of California, San Diego. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #if HAVE_NBTOOL_CONFIG_H 37 #include "nbtool_config.h" 38 #endif 39 40 #include <sys/cdefs.h> 41 #if !defined(lint) 42 #if 0 43 static char sccsid[] = "@(#)options.c 8.2 (Berkeley) 4/18/94"; 44 #else 45 __RCSID("$NetBSD: options.c,v 1.115 2013/11/14 04:00:48 christos Exp $"); 46 #endif 47 #endif /* not lint */ 48 49 #include <sys/types.h> 50 #include <sys/time.h> 51 #include <sys/stat.h> 52 #include <sys/param.h> 53 #include <ctype.h> 54 #include <errno.h> 55 #if HAVE_NBTOOL_CONFIG_H 56 #include "compat_getopt.h" 57 #else 58 #include <getopt.h> 59 #endif 60 #include <limits.h> 61 #include <stdio.h> 62 #include <stdlib.h> 63 #include <string.h> 64 #include <unistd.h> 65 #include <inttypes.h> 66 #include <paths.h> 67 #include "pax.h" 68 #include "options.h" 69 #include "cpio.h" 70 #include "tar.h" 71 #include "extern.h" 72 #ifndef SMALL 73 #include "mtree.h" 74 #endif /* SMALL */ 75 76 /* 77 * Routines which handle command line options 78 */ 79 80 static int nopids; /* tar mode: suppress "pids" for -p option */ 81 static char flgch[] = FLGCH; /* list of all possible flags (pax) */ 82 static OPLIST *ophead = NULL; /* head for format specific options -x */ 83 static OPLIST *optail = NULL; /* option tail */ 84 85 static int opt_add(const char *); 86 static int no_op(void); 87 static void printflg(unsigned int); 88 static int c_frmt(const void *, const void *); 89 static off_t str_offt(char *); 90 static char *get_line(FILE *fp); 91 static void pax_options(int, char **); 92 __dead static void pax_usage(void); 93 static void tar_options(int, char **); 94 __dead static void tar_usage(void); 95 #ifndef NO_CPIO 96 static void cpio_options(int, char **); 97 __dead static void cpio_usage(void); 98 #endif 99 100 /* errors from get_line */ 101 #define GETLINE_FILE_CORRUPT 1 102 #define GETLINE_OUT_OF_MEM 2 103 static int get_line_error; 104 105 #define BZIP2_CMD "bzip2" /* command to run as bzip2 */ 106 #define GZIP_CMD "gzip" /* command to run as gzip */ 107 #define XZ_CMD "xz" /* command to run as xz */ 108 #define COMPRESS_CMD "compress" /* command to run as compress */ 109 110 /* 111 * Long options. 112 */ 113 #define OPT_USE_COMPRESS_PROGRAM 0 114 #define OPT_CHECKPOINT 1 115 #define OPT_UNLINK 2 116 #define OPT_HELP 3 117 #define OPT_ATIME_PRESERVE 4 118 #define OPT_IGNORE_FAILED_READ 5 119 #define OPT_REMOVE_FILES 6 120 #define OPT_NULL 7 121 #define OPT_TOTALS 8 122 #define OPT_VERSION 9 123 #define OPT_EXCLUDE 10 124 #define OPT_BLOCK_COMPRESS 11 125 #define OPT_NORECURSE 12 126 #define OPT_FORCE_LOCAL 13 127 #define OPT_INSECURE 14 128 #define OPT_STRICT 15 129 #define OPT_SPARSE 16 130 #define OPT_XZ 17 131 #define OPT_GNU 18 132 #if !HAVE_NBTOOL_CONFIG_H 133 #define OPT_CHROOT 19 134 #endif 135 136 /* 137 * Format specific routine table - MUST BE IN SORTED ORDER BY NAME 138 * (see pax.h for description of each function) 139 * 140 * name, blksz, hdsz, udev, hlk, blkagn, inhead, id, st_read, 141 * read, end_read, st_write, write, end_write, trail, 142 * subtrail, rd_data, wr_data, options 143 */ 144 145 FSUB fsub[] = { 146 #ifndef NO_CPIO 147 /* 0: OLD BINARY CPIO */ 148 { "bcpio", 5120, sizeof(HD_BCPIO), 1, 0, 0, 1, bcpio_id, cpio_strd, 149 bcpio_rd, bcpio_endrd, cpio_stwr, bcpio_wr, cpio_endwr, NULL, 150 cpio_subtrail, rd_wrfile, wr_rdfile, bad_opt }, 151 152 /* 1: OLD OCTAL CHARACTER CPIO */ 153 { "cpio", 5120, sizeof(HD_CPIO), 1, 0, 0, 1, cpio_id, cpio_strd, 154 cpio_rd, cpio_endrd, cpio_stwr, cpio_wr, cpio_endwr, NULL, 155 cpio_subtrail, rd_wrfile, wr_rdfile, bad_opt }, 156 157 /* 2: SVR4 HEX CPIO */ 158 { "sv4cpio", 5120, sizeof(HD_VCPIO), 1, 0, 0, 1, vcpio_id, cpio_strd, 159 vcpio_rd, vcpio_endrd, cpio_stwr, vcpio_wr, cpio_endwr, NULL, 160 cpio_subtrail, rd_wrfile, wr_rdfile, bad_opt }, 161 162 /* 3: SVR4 HEX CPIO WITH CRC */ 163 { "sv4crc", 5120, sizeof(HD_VCPIO), 1, 0, 0, 1, crc_id, crc_strd, 164 vcpio_rd, vcpio_endrd, crc_stwr, vcpio_wr, cpio_endwr, NULL, 165 cpio_subtrail, rd_wrfile, wr_rdfile, bad_opt }, 166 #endif 167 /* 4: OLD TAR */ 168 { "tar", 10240, BLKMULT, 0, 1, BLKMULT, 0, tar_id, no_op, 169 tar_rd, tar_endrd, no_op, tar_wr, tar_endwr, tar_trail, 170 NULL, rd_wrfile, wr_rdfile, tar_opt }, 171 172 /* 5: POSIX USTAR */ 173 { "ustar", 10240, BLKMULT, 0, 1, BLKMULT, 0, ustar_id, ustar_strd, 174 ustar_rd, tar_endrd, ustar_stwr, ustar_wr, tar_endwr, tar_trail, 175 NULL, rd_wrfile, wr_rdfile, bad_opt } 176 }; 177 #ifndef NO_CPIO 178 #define F_BCPIO 0 /* old binary cpio format */ 179 #define F_CPIO 1 /* old octal character cpio format */ 180 #define F_SV4CPIO 2 /* SVR4 hex cpio format */ 181 #define F_SV4CRC 3 /* SVR4 hex with crc cpio format */ 182 #define F_TAR 4 /* old V7 UNIX tar format */ 183 #define F_USTAR 5 /* ustar format */ 184 #else 185 #define F_TAR 0 /* old V7 UNIX tar format */ 186 #define F_USTAR 1 /* ustar format */ 187 #endif 188 #define DEFLT F_USTAR /* default write format from list above */ 189 190 /* 191 * ford is the archive search order used by get_arc() to determine what kind 192 * of archive we are dealing with. This helps to properly id archive formats 193 * some formats may be subsets of others.... 194 */ 195 int ford[] = {F_USTAR, F_TAR, 196 #ifndef NO_CPIO 197 F_SV4CRC, F_SV4CPIO, F_CPIO, F_BCPIO, 198 #endif 199 -1}; 200 201 /* 202 * filename record separator 203 */ 204 int sep = '\n'; 205 206 /* 207 * Do we have -C anywhere? 208 */ 209 int havechd = 0; 210 211 /* 212 * options() 213 * figure out if we are pax, tar or cpio. Call the appropriate options 214 * parser 215 */ 216 217 void 218 options(int argc, char **argv) 219 { 220 221 /* 222 * Are we acting like pax, tar or cpio (based on argv[0]) 223 */ 224 if ((argv0 = strrchr(argv[0], '/')) != NULL) 225 argv0++; 226 else 227 argv0 = argv[0]; 228 229 if (strstr(argv0, NM_TAR)) { 230 argv0 = NM_TAR; 231 tar_options(argc, argv); 232 #ifndef NO_CPIO 233 } else if (strstr(argv0, NM_CPIO)) { 234 argv0 = NM_CPIO; 235 cpio_options(argc, argv); 236 #endif 237 } else { 238 argv0 = NM_PAX; 239 pax_options(argc, argv); 240 } 241 } 242 243 struct option pax_longopts[] = { 244 { "insecure", no_argument, 0, 245 OPT_INSECURE }, 246 { "force-local", no_argument, 0, 247 OPT_FORCE_LOCAL }, 248 { "use-compress-program", required_argument, 0, 249 OPT_USE_COMPRESS_PROGRAM }, 250 { "xz", no_argument, 0, 251 OPT_XZ }, 252 { "gnu", no_argument, 0, 253 OPT_GNU }, 254 { 0, 0, 0, 255 0 }, 256 }; 257 258 /* 259 * pax_options() 260 * look at the user specified flags. set globals as required and check if 261 * the user specified a legal set of flags. If not, complain and exit 262 */ 263 264 static void 265 pax_options(int argc, char **argv) 266 { 267 int c; 268 size_t i; 269 u_int64_t flg = 0; 270 u_int64_t bflg = 0; 271 char *pt; 272 FSUB tmp; 273 274 /* 275 * process option flags 276 */ 277 while ((c = getopt_long(argc, argv, 278 "0ab:cdf:ijklno:p:rs:tuvwx:zAB:DE:G:HLMN:OPT:U:VXYZ", 279 pax_longopts, NULL)) != -1) { 280 switch (c) { 281 case '0': 282 sep = '\0'; 283 break; 284 case 'a': 285 /* 286 * append 287 */ 288 flg |= AF; 289 break; 290 case 'b': 291 /* 292 * specify blocksize 293 */ 294 flg |= BF; 295 if ((wrblksz = (int)str_offt(optarg)) <= 0) { 296 tty_warn(1, "Invalid block size %s", optarg); 297 pax_usage(); 298 } 299 break; 300 case 'c': 301 /* 302 * inverse match on patterns 303 */ 304 cflag = 1; 305 flg |= CF; 306 break; 307 case 'd': 308 /* 309 * match only dir on extract, not the subtree at dir 310 */ 311 dflag = 1; 312 flg |= DF; 313 break; 314 case 'f': 315 /* 316 * filename where the archive is stored 317 */ 318 arcname = optarg; 319 flg |= FF; 320 break; 321 case 'i': 322 /* 323 * interactive file rename 324 */ 325 iflag = 1; 326 flg |= IF; 327 break; 328 case 'j': 329 /* 330 * pass through bzip2 331 */ 332 gzip_program = BZIP2_CMD; 333 break; 334 case 'k': 335 /* 336 * do not clobber files that exist 337 */ 338 kflag = 1; 339 flg |= KF; 340 break; 341 case 'l': 342 /* 343 * try to link src to dest with copy (-rw) 344 */ 345 lflag = 1; 346 flg |= LF; 347 break; 348 case 'n': 349 /* 350 * select first match for a pattern only 351 */ 352 nflag = 1; 353 flg |= NF; 354 break; 355 case 'o': 356 /* 357 * pass format specific options 358 */ 359 flg |= OF; 360 if (opt_add(optarg) < 0) 361 pax_usage(); 362 break; 363 case 'p': 364 /* 365 * specify file characteristic options 366 */ 367 for (pt = optarg; *pt != '\0'; ++pt) { 368 switch(*pt) { 369 case 'a': 370 /* 371 * do not preserve access time 372 */ 373 patime = 0; 374 break; 375 case 'e': 376 /* 377 * preserve user id, group id, file 378 * mode, access/modification times 379 * and file flags. 380 */ 381 pids = 1; 382 pmode = 1; 383 patime = 1; 384 pmtime = 1; 385 pfflags = 1; 386 break; 387 #if 0 388 case 'f': 389 /* 390 * do not preserve file flags 391 */ 392 pfflags = 0; 393 break; 394 #endif 395 case 'm': 396 /* 397 * do not preserve modification time 398 */ 399 pmtime = 0; 400 break; 401 case 'o': 402 /* 403 * preserve uid/gid 404 */ 405 pids = 1; 406 break; 407 case 'p': 408 /* 409 * preserve file mode bits 410 */ 411 pmode = 1; 412 break; 413 default: 414 tty_warn(1, "Invalid -p string: %c", 415 *pt); 416 pax_usage(); 417 break; 418 } 419 } 420 flg |= PF; 421 break; 422 case 'r': 423 /* 424 * read the archive 425 */ 426 flg |= RF; 427 break; 428 case 's': 429 /* 430 * file name substitution name pattern 431 */ 432 if (rep_add(optarg) < 0) { 433 pax_usage(); 434 break; 435 } 436 flg |= SF; 437 break; 438 case 't': 439 /* 440 * preserve access time on filesystem nodes we read 441 */ 442 tflag = 1; 443 flg |= TF; 444 break; 445 case 'u': 446 /* 447 * ignore those older files 448 */ 449 uflag = 1; 450 flg |= UF; 451 break; 452 case 'v': 453 /* 454 * verbose operation mode 455 */ 456 vflag = 1; 457 flg |= VF; 458 break; 459 case 'w': 460 /* 461 * write an archive 462 */ 463 flg |= WF; 464 break; 465 case 'x': 466 /* 467 * specify an archive format on write 468 */ 469 tmp.name = optarg; 470 frmt = (FSUB *)bsearch((void *)&tmp, (void *)fsub, 471 sizeof(fsub)/sizeof(FSUB), sizeof(FSUB), c_frmt); 472 if (frmt != NULL) { 473 flg |= XF; 474 break; 475 } 476 tty_warn(1, "Unknown -x format: %s", optarg); 477 (void)fputs("pax: Known -x formats are:", stderr); 478 for (i = 0; i < (sizeof(fsub)/sizeof(FSUB)); ++i) 479 (void)fprintf(stderr, " %s", fsub[i].name); 480 (void)fputs("\n\n", stderr); 481 pax_usage(); 482 break; 483 case 'z': 484 /* 485 * use gzip. Non standard option. 486 */ 487 gzip_program = GZIP_CMD; 488 break; 489 case 'A': 490 Aflag = 1; 491 flg |= CAF; 492 break; 493 case 'B': 494 /* 495 * non-standard option on number of bytes written on a 496 * single archive volume. 497 */ 498 if ((wrlimit = str_offt(optarg)) <= 0) { 499 tty_warn(1, "Invalid write limit %s", optarg); 500 pax_usage(); 501 } 502 if (wrlimit % BLKMULT) { 503 tty_warn(1, 504 "Write limit is not a %d byte multiple", 505 BLKMULT); 506 pax_usage(); 507 } 508 flg |= CBF; 509 break; 510 case 'D': 511 /* 512 * On extraction check file inode change time before the 513 * modification of the file name. Non standard option. 514 */ 515 Dflag = 1; 516 flg |= CDF; 517 break; 518 case 'E': 519 /* 520 * non-standard limit on read faults 521 * 0 indicates stop after first error, values 522 * indicate a limit, "none" try forever 523 */ 524 flg |= CEF; 525 if (strcmp(none, optarg) == 0) 526 maxflt = -1; 527 else if ((maxflt = atoi(optarg)) < 0) { 528 tty_warn(1, 529 "Error count value must be positive"); 530 pax_usage(); 531 } 532 break; 533 case 'G': 534 /* 535 * non-standard option for selecting files within an 536 * archive by group (gid or name) 537 */ 538 if (grp_add(optarg) < 0) { 539 pax_usage(); 540 break; 541 } 542 flg |= CGF; 543 break; 544 case 'H': 545 /* 546 * follow command line symlinks only 547 */ 548 Hflag = 1; 549 flg |= CHF; 550 break; 551 case 'L': 552 /* 553 * follow symlinks 554 */ 555 Lflag = 1; 556 flg |= CLF; 557 break; 558 #ifdef SMALL 559 case 'M': 560 case 'N': 561 tty_warn(1, "Support for -%c is not compiled in", c); 562 exit(1); 563 #else /* !SMALL */ 564 case 'M': 565 /* 566 * Treat list of filenames on stdin as an 567 * mtree(8) specfile. Non standard option. 568 */ 569 Mflag = 1; 570 flg |= CMF; 571 break; 572 case 'N': 573 /* 574 * Use alternative directory for user db lookups. 575 */ 576 if (!setup_getid(optarg)) { 577 tty_warn(1, 578 "Unable to use user and group databases in `%s'", 579 optarg); 580 pax_usage(); 581 } 582 break; 583 #endif /* !SMALL */ 584 case 'O': 585 /* 586 * Force one volume. Non standard option. 587 */ 588 force_one_volume = 1; 589 break; 590 case 'P': 591 /* 592 * do NOT follow symlinks (default) 593 */ 594 Lflag = 0; 595 flg |= CPF; 596 break; 597 case 'T': 598 /* 599 * non-standard option for selecting files within an 600 * archive by modification time range (lower,upper) 601 */ 602 if (trng_add(optarg) < 0) { 603 pax_usage(); 604 break; 605 } 606 flg |= CTF; 607 break; 608 case 'U': 609 /* 610 * non-standard option for selecting files within an 611 * archive by user (uid or name) 612 */ 613 if (usr_add(optarg) < 0) { 614 pax_usage(); 615 break; 616 } 617 flg |= CUF; 618 break; 619 case 'V': 620 /* 621 * somewhat verbose operation mode (no listing) 622 */ 623 Vflag = 1; 624 flg |= VSF; 625 break; 626 case 'X': 627 /* 628 * do not pass over mount points in the file system 629 */ 630 Xflag = 1; 631 flg |= CXF; 632 break; 633 case 'Y': 634 /* 635 * On extraction check file inode change time after the 636 * modification of the file name. Non standard option. 637 */ 638 Yflag = 1; 639 flg |= CYF; 640 break; 641 case 'Z': 642 /* 643 * On extraction check modification time after the 644 * modification of the file name. Non standard option. 645 */ 646 Zflag = 1; 647 flg |= CZF; 648 break; 649 case OPT_INSECURE: 650 secure = 0; 651 break; 652 case OPT_FORCE_LOCAL: 653 forcelocal = 1; 654 break; 655 case OPT_USE_COMPRESS_PROGRAM: 656 gzip_program = optarg; 657 break; 658 case OPT_XZ: 659 gzip_program = XZ_CMD; 660 break; 661 case OPT_GNU: 662 is_gnutar = 1; 663 break; 664 case '?': 665 default: 666 pax_usage(); 667 break; 668 } 669 } 670 671 /* 672 * figure out the operation mode of pax read,write,extract,copy,append 673 * or list. check that we have not been given a bogus set of flags 674 * for the operation mode. 675 */ 676 if (ISLIST(flg)) { 677 act = LIST; 678 listf = stdout; 679 bflg = flg & BDLIST; 680 } else if (ISEXTRACT(flg)) { 681 act = EXTRACT; 682 bflg = flg & BDEXTR; 683 } else if (ISARCHIVE(flg)) { 684 act = ARCHIVE; 685 bflg = flg & BDARCH; 686 } else if (ISAPPND(flg)) { 687 act = APPND; 688 bflg = flg & BDARCH; 689 } else if (ISCOPY(flg)) { 690 act = COPY; 691 bflg = flg & BDCOPY; 692 } else 693 pax_usage(); 694 if (bflg) { 695 printflg(flg); 696 pax_usage(); 697 } 698 699 /* 700 * if we are writing (ARCHIVE) we use the default format if the user 701 * did not specify a format. when we write during an APPEND, we will 702 * adopt the format of the existing archive if none was supplied. 703 */ 704 if (!(flg & XF) && (act == ARCHIVE)) 705 frmt = &(fsub[DEFLT]); 706 707 /* 708 * process the args as they are interpreted by the operation mode 709 */ 710 switch (act) { 711 case LIST: 712 case EXTRACT: 713 for (; optind < argc; optind++) 714 if (pat_add(argv[optind], NULL, 0) < 0) 715 pax_usage(); 716 break; 717 case COPY: 718 if (optind >= argc) { 719 tty_warn(0, "Destination directory was not supplied"); 720 pax_usage(); 721 } 722 --argc; 723 dirptr = argv[argc]; 724 if (mkpath(dirptr) < 0) 725 exit(1); 726 /* FALLTHROUGH */ 727 case ARCHIVE: 728 case APPND: 729 for (; optind < argc; optind++) 730 if (ftree_add(argv[optind], 0) < 0) 731 pax_usage(); 732 /* 733 * no read errors allowed on updates/append operation! 734 */ 735 maxflt = 0; 736 break; 737 } 738 } 739 740 741 /* 742 * tar_options() 743 * look at the user specified flags. set globals as required and check if 744 * the user specified a legal set of flags. If not, complain and exit 745 */ 746 747 struct option tar_longopts[] = { 748 { "block-size", required_argument, 0, 'b' }, 749 { "bunzip2", no_argument, 0, 'j' }, 750 { "bzip2", no_argument, 0, 'j' }, 751 { "create", no_argument, 0, 'c' }, /* F */ 752 /* -e -- no corresponding long option */ 753 { "file", required_argument, 0, 'f' }, 754 { "dereference", no_argument, 0, 'h' }, 755 { "keep-old-files", no_argument, 0, 'k' }, 756 { "one-file-system", no_argument, 0, 'l' }, 757 { "modification-time", no_argument, 0, 'm' }, 758 { "old-archive", no_argument, 0, 'o' }, 759 { "portability", no_argument, 0, 'o' }, 760 { "same-permissions", no_argument, 0, 'p' }, 761 { "preserve-permissions", no_argument, 0, 'p' }, 762 { "preserve", no_argument, 0, 'p' }, 763 { "fast-read", no_argument, 0, 'q' }, 764 { "append", no_argument, 0, 'r' }, /* F */ 765 { "update", no_argument, 0, 'u' }, /* F */ 766 { "list", no_argument, 0, 't' }, /* F */ 767 { "verbose", no_argument, 0, 'v' }, 768 { "interactive", no_argument, 0, 'w' }, 769 { "confirmation", no_argument, 0, 'w' }, 770 { "extract", no_argument, 0, 'x' }, /* F */ 771 { "get", no_argument, 0, 'x' }, /* F */ 772 { "gzip", no_argument, 0, 'z' }, 773 { "gunzip", no_argument, 0, 'z' }, 774 { "read-full-blocks", no_argument, 0, 'B' }, 775 { "directory", required_argument, 0, 'C' }, 776 { "to-stdout", no_argument, 0, 'O' }, 777 { "absolute-paths", no_argument, 0, 'P' }, 778 { "sparse", no_argument, 0, 'S' }, 779 { "files-from", required_argument, 0, 'T' }, 780 { "summary", no_argument, 0, 'V' }, 781 { "stats", no_argument, 0, 'V' }, 782 { "exclude-from", required_argument, 0, 'X' }, 783 { "compress", no_argument, 0, 'Z' }, 784 { "uncompress", no_argument, 0, 'Z' }, 785 { "strict", no_argument, 0, 786 OPT_STRICT }, 787 { "atime-preserve", no_argument, 0, 788 OPT_ATIME_PRESERVE }, 789 { "unlink", no_argument, 0, 790 OPT_UNLINK }, 791 { "use-compress-program", required_argument, 0, 792 OPT_USE_COMPRESS_PROGRAM }, 793 { "force-local", no_argument, 0, 794 OPT_FORCE_LOCAL }, 795 { "insecure", no_argument, 0, 796 OPT_INSECURE }, 797 { "exclude", required_argument, 0, 798 OPT_EXCLUDE }, 799 { "no-recursion", no_argument, 0, 800 OPT_NORECURSE }, 801 { "xz", no_argument, 0, 802 OPT_XZ }, 803 #if !HAVE_NBTOOL_CONFIG_H 804 { "chroot", no_argument, 0, 805 OPT_CHROOT }, 806 #endif 807 #if 0 /* Not implemented */ 808 { "catenate", no_argument, 0, 'A' }, /* F */ 809 { "concatenate", no_argument, 0, 'A' }, /* F */ 810 { "diff", no_argument, 0, 'd' }, /* F */ 811 { "compare", no_argument, 0, 'd' }, /* F */ 812 { "checkpoint", no_argument, 0, 813 OPT_CHECKPOINT }, 814 { "help", no_argument, 0, 815 OPT_HELP }, 816 { "info-script", required_argument, 0, 'F' }, 817 { "new-volume-script", required_argument, 0, 'F' }, 818 { "incremental", no_argument, 0, 'G' }, 819 { "listed-incremental", required_argument, 0, 'g' }, 820 { "ignore-zeros", no_argument, 0, 'i' }, 821 { "ignore-failed-read", no_argument, 0, 822 OPT_IGNORE_FAILED_READ }, 823 { "starting-file", no_argument, 0, 'K' }, 824 { "tape-length", required_argument, 0, 'L' }, 825 { "multi-volume", no_argument, 0, 'M' }, 826 { "after-date", required_argument, 0, 'N' }, 827 { "newer", required_argument, 0, 'N' }, 828 { "record-number", no_argument, 0, 'R' }, 829 { "remove-files", no_argument, 0, 830 OPT_REMOVE_FILES }, 831 { "same-order", no_argument, 0, 's' }, 832 { "preserve-order", no_argument, 0, 's' }, 833 { "null", no_argument, 0, 834 OPT_NULL }, 835 { "totals", no_argument, 0, 836 OPT_TOTALS }, 837 { "volume-name", required_argument, 0, 'V' }, /* XXX */ 838 { "label", required_argument, 0, 'V' }, /* XXX */ 839 { "version", no_argument, 0, 840 OPT_VERSION }, 841 { "verify", no_argument, 0, 'W' }, 842 { "block-compress", no_argument, 0, 843 OPT_BLOCK_COMPRESS }, 844 #endif 845 { 0, 0, 0, 0 }, 846 }; 847 848 static void 849 tar_set_action(int op) 850 { 851 if (act != ERROR && act != op) 852 tar_usage(); 853 act = op; 854 } 855 856 static void 857 tar_options(int argc, char **argv) 858 { 859 int c; 860 int fstdin = 0; 861 int Oflag = 0; 862 int nincfiles = 0; 863 int incfiles_max = 0; 864 struct incfile { 865 char *file; 866 char *dir; 867 }; 868 struct incfile *incfiles = NULL; 869 870 /* 871 * Set default values. 872 */ 873 rmleadslash = 1; 874 is_gnutar = 1; 875 876 /* 877 * process option flags 878 */ 879 while ((c = getoldopt(argc, argv, 880 "+b:cef:hjklmopqrs:tuvwxzBC:HI:OPST:X:Z014578", 881 tar_longopts, NULL)) 882 != -1) { 883 switch(c) { 884 case 'b': 885 /* 886 * specify blocksize in 512-byte blocks 887 */ 888 if ((wrblksz = (int)str_offt(optarg)) <= 0) { 889 tty_warn(1, "Invalid block size %s", optarg); 890 tar_usage(); 891 } 892 wrblksz *= 512; /* XXX - check for int oflow */ 893 break; 894 case 'c': 895 /* 896 * create an archive 897 */ 898 tar_set_action(ARCHIVE); 899 break; 900 case 'e': 901 /* 902 * stop after first error 903 */ 904 maxflt = 0; 905 break; 906 case 'f': 907 /* 908 * filename where the archive is stored 909 */ 910 if ((optarg[0] == '-') && (optarg[1]== '\0')) { 911 /* 912 * treat a - as stdin 913 */ 914 fstdin = 1; 915 arcname = NULL; 916 break; 917 } 918 fstdin = 0; 919 arcname = optarg; 920 break; 921 case 'h': 922 /* 923 * follow symlinks 924 */ 925 Lflag = 1; 926 break; 927 case 'j': 928 /* 929 * pass through bzip2. not a standard option 930 */ 931 gzip_program = BZIP2_CMD; 932 break; 933 case 'k': 934 /* 935 * do not clobber files that exist 936 */ 937 kflag = 1; 938 break; 939 case 'l': 940 /* 941 * do not pass over mount points in the file system 942 */ 943 Xflag = 1; 944 break; 945 case 'm': 946 /* 947 * do not preserve modification time 948 */ 949 pmtime = 0; 950 break; 951 case 'o': 952 /* 953 * This option does several things based on whether 954 * this is a create or extract operation. 955 */ 956 if (act == ARCHIVE) { 957 /* GNU tar: write V7 format archives. */ 958 Oflag = 1; 959 /* 4.2BSD: don't add directory entries. */ 960 if (opt_add("write_opt=nodir") < 0) 961 tar_usage(); 962 963 } else { 964 /* SUS: don't preserve owner/group. */ 965 pids = 0; 966 nopids = 1; 967 } 968 break; 969 case 'O': 970 Oflag = 1; 971 break; 972 case 'p': 973 /* 974 * preserve user id, group id, file 975 * mode, access/modification times 976 */ 977 if (!nopids) 978 pids = 1; 979 pmode = 1; 980 patime = 1; 981 pmtime = 1; 982 break; 983 case 'q': 984 /* 985 * select first match for a pattern only 986 */ 987 nflag = 1; 988 break; 989 case 'r': 990 case 'u': 991 /* 992 * append to the archive 993 */ 994 tar_set_action(APPND); 995 break; 996 case 's': 997 /* 998 * file name substitution name pattern 999 */ 1000 if (rep_add(optarg) < 0) { 1001 tar_usage(); 1002 break; 1003 } 1004 break; 1005 case 't': 1006 /* 1007 * list contents of the tape 1008 */ 1009 tar_set_action(LIST); 1010 break; 1011 case 'v': 1012 /* 1013 * verbose operation mode 1014 */ 1015 vflag = 1; 1016 break; 1017 case 'w': 1018 /* 1019 * interactive file rename 1020 */ 1021 iflag = 1; 1022 break; 1023 case 'x': 1024 /* 1025 * extract an archive, preserving mode, 1026 * and mtime if possible. 1027 */ 1028 tar_set_action(EXTRACT); 1029 pmtime = 1; 1030 break; 1031 case 'z': 1032 /* 1033 * use gzip. Non standard option. 1034 */ 1035 gzip_program = GZIP_CMD; 1036 break; 1037 case 'B': 1038 /* 1039 * Nothing to do here, this is pax default 1040 */ 1041 break; 1042 case 'C': 1043 havechd++; 1044 chdname = optarg; 1045 break; 1046 case 'H': 1047 /* 1048 * follow command line symlinks only 1049 */ 1050 Hflag = 1; 1051 break; 1052 case 'I': 1053 case 'T': 1054 if (++nincfiles > incfiles_max) { 1055 incfiles_max = nincfiles + 3; 1056 incfiles = realloc(incfiles, 1057 sizeof(*incfiles) * incfiles_max); 1058 if (incfiles == NULL) { 1059 tty_warn(0, "Unable to allocate space " 1060 "for option list"); 1061 exit(1); 1062 } 1063 } 1064 incfiles[nincfiles - 1].file = optarg; 1065 incfiles[nincfiles - 1].dir = chdname; 1066 break; 1067 case 'P': 1068 /* 1069 * do not remove leading '/' from pathnames 1070 */ 1071 rmleadslash = 0; 1072 Aflag = 1; 1073 break; 1074 case 'S': 1075 /* do nothing; we already generate sparse files */ 1076 break; 1077 case 'V': 1078 /* 1079 * semi-verbose operation mode (no listing) 1080 */ 1081 Vflag = 1; 1082 break; 1083 case 'X': 1084 /* 1085 * GNU tar compat: exclude the files listed in optarg 1086 */ 1087 if (tar_gnutar_X_compat(optarg) != 0) 1088 tar_usage(); 1089 break; 1090 case 'Z': 1091 /* 1092 * use compress. 1093 */ 1094 gzip_program = COMPRESS_CMD; 1095 break; 1096 case '0': 1097 arcname = DEV_0; 1098 break; 1099 case '1': 1100 arcname = DEV_1; 1101 break; 1102 case '4': 1103 arcname = DEV_4; 1104 break; 1105 case '5': 1106 arcname = DEV_5; 1107 break; 1108 case '7': 1109 arcname = DEV_7; 1110 break; 1111 case '8': 1112 arcname = DEV_8; 1113 break; 1114 case OPT_ATIME_PRESERVE: 1115 patime = 1; 1116 break; 1117 case OPT_UNLINK: 1118 /* Just ignore -- we always unlink first. */ 1119 break; 1120 case OPT_USE_COMPRESS_PROGRAM: 1121 gzip_program = optarg; 1122 break; 1123 case OPT_FORCE_LOCAL: 1124 forcelocal = 1; 1125 break; 1126 case OPT_INSECURE: 1127 secure = 0; 1128 break; 1129 case OPT_STRICT: 1130 /* disable gnu extensions */ 1131 is_gnutar = 0; 1132 break; 1133 case OPT_EXCLUDE: 1134 if (tar_gnutar_minus_minus_exclude(optarg) != 0) 1135 tar_usage(); 1136 break; 1137 case OPT_NORECURSE: 1138 dflag = 1; 1139 break; 1140 #if !HAVE_NBTOOL_CONFIG_H 1141 case OPT_CHROOT: 1142 do_chroot = 1; 1143 break; 1144 #endif 1145 case OPT_XZ: 1146 gzip_program = XZ_CMD; 1147 break; 1148 default: 1149 tar_usage(); 1150 break; 1151 } 1152 } 1153 argc -= optind; 1154 argv += optind; 1155 1156 /* Tar requires an action. */ 1157 if (act == ERROR) 1158 tar_usage(); 1159 1160 /* Traditional tar behaviour (pax uses stderr unless in list mode) */ 1161 if (fstdin == 1 && act == ARCHIVE) 1162 listf = stderr; 1163 else 1164 listf = stdout; 1165 1166 /* Traditional tar behaviour (pax wants to read file list from stdin) */ 1167 if ((act == ARCHIVE || act == APPND) && argc == 0 && nincfiles == 0) 1168 exit(0); 1169 /* 1170 * if we are writing (ARCHIVE) specify tar, otherwise run like pax 1171 * (unless -o specified) 1172 */ 1173 if (act == ARCHIVE || act == APPND) 1174 frmt = &(fsub[Oflag ? F_TAR : F_USTAR]); 1175 else if (Oflag) { 1176 if (act == EXTRACT) 1177 to_stdout = 1; 1178 else { 1179 tty_warn(1, "The -O/-o options are only valid when " 1180 "writing or extracting an archive"); 1181 tar_usage(); 1182 } 1183 } 1184 1185 /* 1186 * process the args as they are interpreted by the operation mode 1187 */ 1188 switch (act) { 1189 case LIST: 1190 case EXTRACT: 1191 default: 1192 { 1193 int sawpat = 0; 1194 int dirisnext = 0; 1195 char *file, *dir = NULL; 1196 int mustfreedir = 0; 1197 1198 while (nincfiles || *argv != NULL) { 1199 /* 1200 * If we queued up any include files, 1201 * pull them in now. Otherwise, check 1202 * for -I and -C positional flags. 1203 * Anything else must be a file to 1204 * extract. 1205 */ 1206 if (nincfiles) { 1207 file = incfiles->file; 1208 dir = incfiles->dir; 1209 mustfreedir = 0; 1210 incfiles++; 1211 nincfiles--; 1212 } else if (strcmp(*argv, "-I") == 0) { 1213 if (*++argv == NULL) 1214 break; 1215 file = *argv++; 1216 dir = chdname; 1217 mustfreedir = 0; 1218 } else { 1219 file = NULL; 1220 dir = NULL; 1221 mustfreedir = 0; 1222 } 1223 if (file != NULL) { 1224 FILE *fp; 1225 char *str; 1226 1227 if (strcmp(file, "-") == 0) 1228 fp = stdin; 1229 else if ((fp = fopen(file, "r")) == NULL) { 1230 tty_warn(1, "Unable to open file '%s' for read", file); 1231 tar_usage(); 1232 } 1233 while ((str = get_line(fp)) != NULL) { 1234 if (dirisnext) { 1235 if (dir && mustfreedir) 1236 free(dir); 1237 dir = str; 1238 mustfreedir = 1; 1239 dirisnext = 0; 1240 continue; 1241 } 1242 if (strcmp(str, "-C") == 0) { 1243 havechd++; 1244 dirisnext = 1; 1245 free(str); 1246 continue; 1247 } 1248 if (strncmp(str, "-C ", 3) == 0) { 1249 havechd++; 1250 if (dir && mustfreedir) 1251 free(dir); 1252 dir = strdup(str + 3); 1253 mustfreedir = 1; 1254 free(str); 1255 continue; 1256 } 1257 if (pat_add(str, dir, NOGLOB_MTCH) < 0) 1258 tar_usage(); 1259 sawpat = 1; 1260 } 1261 /* Bomb if given -C w/out a dir. */ 1262 if (dirisnext) 1263 tar_usage(); 1264 if (dir && mustfreedir) 1265 free(dir); 1266 if (strcmp(file, "-") != 0) 1267 fclose(fp); 1268 if (get_line_error) { 1269 tty_warn(1, "Problem with file '%s'", file); 1270 tar_usage(); 1271 } 1272 } else if (strcmp(*argv, "-C") == 0) { 1273 if (*++argv == NULL) 1274 break; 1275 chdname = *argv++; 1276 havechd++; 1277 } else if (pat_add(*argv++, chdname, 0) < 0) 1278 tar_usage(); 1279 else 1280 sawpat = 1; 1281 } 1282 /* 1283 * if patterns were added, we are doing chdir() 1284 * on a file-by-file basis, else, just one 1285 * global chdir (if any) after opening input. 1286 */ 1287 if (sawpat > 0) 1288 chdname = NULL; 1289 } 1290 break; 1291 case ARCHIVE: 1292 case APPND: 1293 if (chdname != NULL) { /* initial chdir() */ 1294 if (ftree_add(chdname, 1) < 0) 1295 tar_usage(); 1296 } 1297 1298 while (nincfiles || *argv != NULL) { 1299 char *file, *dir; 1300 1301 /* 1302 * If we queued up any include files, pull them in 1303 * now. Otherwise, check for -I and -C positional 1304 * flags. Anything else must be a file to include 1305 * in the archive. 1306 */ 1307 if (nincfiles) { 1308 file = incfiles->file; 1309 dir = incfiles->dir; 1310 incfiles++; 1311 nincfiles--; 1312 } else if (strcmp(*argv, "-I") == 0) { 1313 if (*++argv == NULL) 1314 break; 1315 file = *argv++; 1316 dir = NULL; 1317 } else { 1318 file = NULL; 1319 dir = NULL; 1320 } 1321 if (file != NULL) { 1322 FILE *fp; 1323 char *str; 1324 int dirisnext = 0; 1325 1326 /* Set directory if needed */ 1327 if (dir) { 1328 if (ftree_add(dir, 1) < 0) 1329 tar_usage(); 1330 } 1331 1332 if (strcmp(file, "-") == 0) 1333 fp = stdin; 1334 else if ((fp = fopen(file, "r")) == NULL) { 1335 tty_warn(1, "Unable to open file '%s' for read", file); 1336 tar_usage(); 1337 } 1338 while ((str = get_line(fp)) != NULL) { 1339 if (dirisnext) { 1340 if (ftree_add(str, 1) < 0) 1341 tar_usage(); 1342 dirisnext = 0; 1343 continue; 1344 } 1345 if (strcmp(str, "-C") == 0) { 1346 dirisnext = 1; 1347 continue; 1348 } 1349 if (strncmp(str, "-C ", 3) == 0) { 1350 if (ftree_add(str + 3, 1) < 0) 1351 tar_usage(); 1352 continue; 1353 } 1354 if (ftree_add(str, 0) < 0) 1355 tar_usage(); 1356 } 1357 /* Bomb if given -C w/out a dir. */ 1358 if (dirisnext) 1359 tar_usage(); 1360 if (strcmp(file, "-") != 0) 1361 fclose(fp); 1362 if (get_line_error) { 1363 tty_warn(1, "Problem with file '%s'", 1364 file); 1365 tar_usage(); 1366 } 1367 } else if (strcmp(*argv, "-C") == 0) { 1368 if (*++argv == NULL) 1369 break; 1370 if (ftree_add(*argv++, 1) < 0) 1371 tar_usage(); 1372 } else if (ftree_add(*argv++, 0) < 0) 1373 tar_usage(); 1374 } 1375 /* 1376 * no read errors allowed on updates/append operation! 1377 */ 1378 maxflt = 0; 1379 break; 1380 } 1381 if (!fstdin && ((arcname == NULL) || (*arcname == '\0'))) { 1382 arcname = getenv("TAPE"); 1383 if ((arcname == NULL) || (*arcname == '\0')) 1384 arcname = _PATH_DEFTAPE; 1385 } 1386 } 1387 1388 int 1389 mkpath(char *path) 1390 { 1391 char *slash; 1392 int done = 0; 1393 1394 slash = path; 1395 1396 while (!done) { 1397 slash += strspn(slash, "/"); 1398 slash += strcspn(slash, "/"); 1399 1400 done = (*slash == '\0'); 1401 *slash = '\0'; 1402 1403 if (domkdir(path, 0777) == -1) 1404 goto out; 1405 1406 if (!done) 1407 *slash = '/'; 1408 } 1409 1410 return 0; 1411 out: 1412 /* Can't create or or not a directory */ 1413 syswarn(1, errno, "Cannot create directory `%s'", path); 1414 return -1; 1415 } 1416 1417 1418 #ifndef NO_CPIO 1419 struct option cpio_longopts[] = { 1420 { "reset-access-time", no_argument, 0, 'a' }, 1421 { "make-directories", no_argument, 0, 'd' }, 1422 { "nonmatching", no_argument, 0, 'f' }, 1423 { "extract", no_argument, 0, 'i' }, 1424 { "link", no_argument, 0, 'l' }, 1425 { "preserve-modification-time", no_argument, 0, 'm' }, 1426 { "create", no_argument, 0, 'o' }, 1427 { "pass-through", no_argument, 0, 'p' }, 1428 { "rename", no_argument, 0, 'r' }, 1429 { "list", no_argument, 0, 't' }, 1430 { "unconditional", no_argument, 0, 'u' }, 1431 { "verbose", no_argument, 0, 'v' }, 1432 { "append", no_argument, 0, 'A' }, 1433 { "pattern-file", required_argument, 0, 'E' }, 1434 { "file", required_argument, 0, 'F' }, 1435 { "force-local", no_argument, 0, 1436 OPT_FORCE_LOCAL }, 1437 { "format", required_argument, 0, 'H' }, 1438 { "dereference", no_argument, 0, 'L' }, 1439 { "swap-halfwords", no_argument, 0, 'S' }, 1440 { "summary", no_argument, 0, 'V' }, 1441 { "stats", no_argument, 0, 'V' }, 1442 { "insecure", no_argument, 0, 1443 OPT_INSECURE }, 1444 { "sparse", no_argument, 0, 1445 OPT_SPARSE }, 1446 { "xz", no_argument, 0, 1447 OPT_XZ }, 1448 1449 #ifdef notyet 1450 /* Not implemented */ 1451 { "null", no_argument, 0, '0' }, 1452 { "swap", no_argument, 0, 'b' }, 1453 { "numeric-uid-gid", no_argument, 0, 'n' }, 1454 { "swap-bytes", no_argument, 0, 's' }, 1455 { "message", required_argument, 0, 'M' }, 1456 { "owner", required_argument, 0 'R' }, 1457 { "dot", no_argument, 0, 'V' }, /* xxx */ 1458 { "block-size", required_argument, 0, 1459 OPT_BLOCK_SIZE }, 1460 { "no-absolute-pathnames", no_argument, 0, 1461 OPT_NO_ABSOLUTE_PATHNAMES }, 1462 { "no-preserve-owner", no_argument, 0, 1463 OPT_NO_PRESERVE_OWNER }, 1464 { "only-verify-crc", no_argument, 0, 1465 OPT_ONLY_VERIFY_CRC }, 1466 { "rsh-command", required_argument, 0, 1467 OPT_RSH_COMMAND }, 1468 { "version", no_argument, 0, 1469 OPT_VERSION }, 1470 #endif 1471 { 0, 0, 0, 0 }, 1472 }; 1473 1474 static void 1475 cpio_set_action(int op) 1476 { 1477 if ((act == APPND && op == ARCHIVE) || (act == ARCHIVE && op == APPND)) 1478 act = APPND; 1479 else if (act == EXTRACT && op == LIST) 1480 act = op; 1481 else if (act != ERROR && act != op) 1482 cpio_usage(); 1483 else 1484 act = op; 1485 } 1486 1487 /* 1488 * cpio_options() 1489 * look at the user specified flags. set globals as required and check if 1490 * the user specified a legal set of flags. If not, complain and exit 1491 */ 1492 1493 static void 1494 cpio_options(int argc, char **argv) 1495 { 1496 FSUB tmp; 1497 u_int64_t flg = 0; 1498 u_int64_t bflg = 0; 1499 int c; 1500 size_t i; 1501 FILE *fp; 1502 char *str; 1503 1504 uflag = 1; 1505 kflag = 1; 1506 pids = 1; 1507 pmode = 1; 1508 pmtime = 0; 1509 arcname = NULL; 1510 dflag = 1; 1511 nodirs = 1; 1512 /* 1513 * process option flags 1514 */ 1515 while ((c = getoldopt(argc, argv, 1516 "+abcdfiklmoprstuvzABC:E:F:H:I:LM:O:R:SVZ6", 1517 cpio_longopts, NULL)) != -1) { 1518 switch(c) { 1519 case 'a': 1520 /* 1521 * preserve access time on filesystem nodes we read 1522 */ 1523 tflag = 1; 1524 flg |= TF; 1525 break; 1526 #ifdef notyet 1527 case 'b': 1528 /* 1529 * swap bytes and half-words when reading data 1530 */ 1531 break; 1532 #endif 1533 case 'c': 1534 /* 1535 * ASCII cpio header 1536 */ 1537 frmt = &fsub[F_SV4CPIO]; 1538 break; 1539 case 'd': 1540 /* 1541 * create directories as needed 1542 * pax does this by default .. 1543 */ 1544 nodirs = 0; 1545 break; 1546 case 'f': 1547 /* 1548 * inverse match on patterns 1549 */ 1550 cflag = 1; 1551 flg |= CF; 1552 break; 1553 case 'i': 1554 /* 1555 * read the archive 1556 */ 1557 cpio_set_action(EXTRACT); 1558 flg |= RF; 1559 break; 1560 #ifdef notyet 1561 case 'k': 1562 break; 1563 #endif 1564 case 'l': 1565 /* 1566 * try to link src to dest with copy (-rw) 1567 */ 1568 lflag = 1; 1569 flg |= LF; 1570 break; 1571 case 'm': 1572 /* 1573 * preserve mtime 1574 */ 1575 flg |= PF; 1576 pmtime = 1; 1577 break; 1578 case 'o': 1579 /* 1580 * write an archive 1581 */ 1582 cpio_set_action(ARCHIVE); 1583 frmt = &(fsub[F_SV4CRC]); 1584 flg |= WF; 1585 break; 1586 case 'p': 1587 /* 1588 * cpio -p is like pax -rw 1589 */ 1590 cpio_set_action(COPY); 1591 flg |= RF | WF; 1592 break; 1593 case 'r': 1594 /* 1595 * interactive file rename 1596 */ 1597 iflag = 1; 1598 flg |= IF; 1599 break; 1600 #ifdef notyet 1601 case 's': 1602 /* 1603 * swap bytes after reading data 1604 */ 1605 break; 1606 #endif 1607 case 't': 1608 /* 1609 * list contents of archive 1610 */ 1611 cpio_set_action(LIST); 1612 listf = stdout; 1613 flg &= ~RF; 1614 break; 1615 case 'u': 1616 /* 1617 * don't ignore those older files 1618 */ 1619 uflag = 0; 1620 kflag = 0; 1621 flg |= UF; 1622 break; 1623 case 'v': 1624 /* 1625 * verbose operation mode 1626 */ 1627 vflag = 1; 1628 flg |= VF; 1629 break; 1630 case 'z': 1631 /* 1632 * use gzip. Non standard option. 1633 */ 1634 gzip_program = GZIP_CMD; 1635 break; 1636 case 'A': 1637 /* 1638 * append to an archive 1639 */ 1640 cpio_set_action(APPND); 1641 flg |= AF; 1642 break; 1643 case 'B': 1644 /* 1645 * set blocksize to 5120 1646 */ 1647 blksz = 5120; 1648 break; 1649 case 'C': 1650 /* 1651 * specify blocksize 1652 */ 1653 if ((blksz = (int)str_offt(optarg)) <= 0) { 1654 tty_warn(1, "Invalid block size %s", optarg); 1655 cpio_usage(); 1656 } 1657 break; 1658 case 'E': 1659 /* 1660 * file with patterns to extract or list 1661 */ 1662 if ((fp = fopen(optarg, "r")) == NULL) { 1663 tty_warn(1, "Unable to open file '%s' for read", 1664 optarg); 1665 cpio_usage(); 1666 } 1667 while ((str = get_line(fp)) != NULL) { 1668 pat_add(str, NULL, 0); 1669 } 1670 fclose(fp); 1671 if (get_line_error) { 1672 tty_warn(1, "Problem with file '%s'", optarg); 1673 cpio_usage(); 1674 } 1675 break; 1676 case 'H': 1677 /* 1678 * specify an archive format on write 1679 */ 1680 tmp.name = optarg; 1681 frmt = (FSUB *)bsearch((void *)&tmp, (void *)fsub, 1682 sizeof(fsub)/sizeof(FSUB), sizeof(FSUB), c_frmt); 1683 if (frmt != NULL) { 1684 flg |= XF; 1685 break; 1686 } 1687 tty_warn(1, "Unknown -H format: %s", optarg); 1688 (void)fputs("cpio: Known -H formats are:", stderr); 1689 for (i = 0; i < (sizeof(fsub)/sizeof(FSUB)); ++i) 1690 (void)fprintf(stderr, " %s", fsub[i].name); 1691 (void)fputs("\n\n", stderr); 1692 cpio_usage(); 1693 break; 1694 case 'F': 1695 case 'I': 1696 case 'O': 1697 /* 1698 * filename where the archive is stored 1699 */ 1700 if ((optarg[0] == '-') && (optarg[1]== '\0')) { 1701 /* 1702 * treat a - as stdin 1703 */ 1704 arcname = NULL; 1705 break; 1706 } 1707 arcname = optarg; 1708 break; 1709 case 'L': 1710 /* 1711 * follow symlinks 1712 */ 1713 Lflag = 1; 1714 flg |= CLF; 1715 break; 1716 #ifdef notyet 1717 case 'M': 1718 arg = optarg; 1719 break; 1720 case 'R': 1721 arg = optarg; 1722 break; 1723 #endif 1724 case 'S': 1725 /* 1726 * swap halfwords after reading data 1727 */ 1728 cpio_swp_head = 1; 1729 break; 1730 #ifdef notyet 1731 case 'V': /* print a '.' for each file processed */ 1732 break; 1733 #endif 1734 case 'V': 1735 /* 1736 * semi-verbose operation mode (no listing) 1737 */ 1738 Vflag = 1; 1739 flg |= VF; 1740 break; 1741 case 'Z': 1742 /* 1743 * use compress. Non standard option. 1744 */ 1745 gzip_program = COMPRESS_CMD; 1746 break; 1747 case '6': 1748 /* 1749 * process Version 6 cpio format 1750 */ 1751 frmt = &(fsub[F_BCPIO]); 1752 break; 1753 case OPT_FORCE_LOCAL: 1754 forcelocal = 1; 1755 break; 1756 case OPT_INSECURE: 1757 secure = 0; 1758 break; 1759 case OPT_SPARSE: 1760 /* do nothing; we already generate sparse files */ 1761 break; 1762 case OPT_XZ: 1763 gzip_program = XZ_CMD; 1764 break; 1765 default: 1766 cpio_usage(); 1767 break; 1768 } 1769 } 1770 1771 /* 1772 * figure out the operation mode of cpio. check that we have not been 1773 * given a bogus set of flags for the operation mode. 1774 */ 1775 if (ISLIST(flg)) { 1776 act = LIST; 1777 bflg = flg & BDLIST; 1778 } else if (ISEXTRACT(flg)) { 1779 act = EXTRACT; 1780 bflg = flg & BDEXTR; 1781 } else if (ISARCHIVE(flg)) { 1782 act = ARCHIVE; 1783 bflg = flg & BDARCH; 1784 } else if (ISAPPND(flg)) { 1785 act = APPND; 1786 bflg = flg & BDARCH; 1787 } else if (ISCOPY(flg)) { 1788 act = COPY; 1789 bflg = flg & BDCOPY; 1790 } else 1791 cpio_usage(); 1792 if (bflg) { 1793 cpio_usage(); 1794 } 1795 1796 /* 1797 * if we are writing (ARCHIVE) we use the default format if the user 1798 * did not specify a format. when we write during an APPEND, we will 1799 * adopt the format of the existing archive if none was supplied. 1800 */ 1801 if (!(flg & XF) && (act == ARCHIVE)) 1802 frmt = &(fsub[F_BCPIO]); 1803 1804 /* 1805 * process the args as they are interpreted by the operation mode 1806 */ 1807 switch (act) { 1808 case LIST: 1809 case EXTRACT: 1810 for (; optind < argc; optind++) 1811 if (pat_add(argv[optind], NULL, 0) < 0) 1812 cpio_usage(); 1813 break; 1814 case COPY: 1815 if (optind >= argc) { 1816 tty_warn(0, "Destination directory was not supplied"); 1817 cpio_usage(); 1818 } 1819 --argc; 1820 dirptr = argv[argc]; 1821 /* FALLTHROUGH */ 1822 case ARCHIVE: 1823 case APPND: 1824 if (argc != optind) { 1825 for (; optind < argc; optind++) 1826 if (ftree_add(argv[optind], 0) < 0) 1827 cpio_usage(); 1828 break; 1829 } 1830 /* 1831 * no read errors allowed on updates/append operation! 1832 */ 1833 maxflt = 0; 1834 while ((str = get_line(stdin)) != NULL) { 1835 ftree_add(str, 0); 1836 } 1837 if (get_line_error) { 1838 tty_warn(1, "Problem while reading stdin"); 1839 cpio_usage(); 1840 } 1841 break; 1842 default: 1843 cpio_usage(); 1844 break; 1845 } 1846 } 1847 #endif 1848 1849 /* 1850 * printflg() 1851 * print out those invalid flag sets found to the user 1852 */ 1853 1854 static void 1855 printflg(unsigned int flg) 1856 { 1857 int nxt; 1858 1859 (void)fprintf(stderr,"%s: Invalid combination of options:", argv0); 1860 while ((nxt = ffs(flg)) != 0) { 1861 flg &= ~(1 << (nxt - 1)); 1862 (void)fprintf(stderr, " -%c", flgch[nxt - 1]); 1863 } 1864 (void)putc('\n', stderr); 1865 } 1866 1867 /* 1868 * c_frmt() 1869 * comparison routine used by bsearch to find the format specified 1870 * by the user 1871 */ 1872 1873 static int 1874 c_frmt(const void *a, const void *b) 1875 { 1876 return strcmp(((const FSUB *)a)->name, ((const FSUB *)b)->name); 1877 } 1878 1879 /* 1880 * opt_next() 1881 * called by format specific options routines to get each format specific 1882 * flag and value specified with -o 1883 * Return: 1884 * pointer to next OPLIST entry or NULL (end of list). 1885 */ 1886 1887 OPLIST * 1888 opt_next(void) 1889 { 1890 OPLIST *opt; 1891 1892 if ((opt = ophead) != NULL) 1893 ophead = ophead->fow; 1894 return opt; 1895 } 1896 1897 /* 1898 * bad_opt() 1899 * generic routine used to complain about a format specific options 1900 * when the format does not support options. 1901 */ 1902 1903 int 1904 bad_opt(void) 1905 { 1906 OPLIST *opt; 1907 1908 if (ophead == NULL) 1909 return 0; 1910 /* 1911 * print all we were given 1912 */ 1913 tty_warn(1," These format options are not supported for %s", 1914 frmt->name); 1915 while ((opt = opt_next()) != NULL) 1916 (void)fprintf(stderr, "\t%s = %s\n", opt->name, opt->value); 1917 if (strcmp(NM_TAR, argv0) == 0) 1918 tar_usage(); 1919 #ifndef NO_CPIO 1920 else if (strcmp(NM_CPIO, argv0) == 0) 1921 cpio_usage(); 1922 #endif 1923 else 1924 pax_usage(); 1925 return 0; 1926 } 1927 1928 /* 1929 * opt_add() 1930 * breaks the value supplied to -o into a option name and value. options 1931 * are given to -o in the form -o name-value,name=value 1932 * multiple -o may be specified. 1933 * Return: 1934 * 0 if format in name=value format, -1 if -o is passed junk 1935 */ 1936 1937 int 1938 opt_add(const char *str) 1939 { 1940 OPLIST *opt; 1941 char *frpt; 1942 char *pt; 1943 char *endpt; 1944 char *dstr; 1945 1946 if ((str == NULL) || (*str == '\0')) { 1947 tty_warn(0, "Invalid option name"); 1948 return -1; 1949 } 1950 if ((dstr = strdup(str)) == NULL) { 1951 tty_warn(0, "Unable to allocate space for option list"); 1952 return -1; 1953 } 1954 frpt = endpt = dstr; 1955 1956 /* 1957 * break into name and values pieces and stuff each one into a 1958 * OPLIST structure. When we know the format, the format specific 1959 * option function will go through this list 1960 */ 1961 while ((frpt != NULL) && (*frpt != '\0')) { 1962 if ((endpt = strchr(frpt, ',')) != NULL) 1963 *endpt = '\0'; 1964 if ((pt = strchr(frpt, '=')) == NULL) { 1965 tty_warn(0, "Invalid options format"); 1966 free(dstr); 1967 return -1; 1968 } 1969 if ((opt = (OPLIST *)malloc(sizeof(OPLIST))) == NULL) { 1970 tty_warn(0, "Unable to allocate space for option list"); 1971 free(dstr); 1972 return -1; 1973 } 1974 *pt++ = '\0'; 1975 opt->name = frpt; 1976 opt->value = pt; 1977 opt->fow = NULL; 1978 if (endpt != NULL) 1979 frpt = endpt + 1; 1980 else 1981 frpt = NULL; 1982 if (ophead == NULL) { 1983 optail = ophead = opt; 1984 continue; 1985 } 1986 optail->fow = opt; 1987 optail = opt; 1988 } 1989 return 0; 1990 } 1991 1992 /* 1993 * str_offt() 1994 * Convert an expression of the following forms to an off_t > 0. 1995 * 1) A positive decimal number. 1996 * 2) A positive decimal number followed by a b (mult by 512). 1997 * 3) A positive decimal number followed by a k (mult by 1024). 1998 * 4) A positive decimal number followed by a m (mult by 512). 1999 * 5) A positive decimal number followed by a w (mult by sizeof int) 2000 * 6) Two or more positive decimal numbers (with/without k,b or w). 2001 * separated by x (also * for backwards compatibility), specifying 2002 * the product of the indicated values. 2003 * Return: 2004 * 0 for an error, a positive value o.w. 2005 */ 2006 2007 static off_t 2008 str_offt(char *val) 2009 { 2010 char *expr; 2011 off_t num, t; 2012 2013 num = STRTOOFFT(val, &expr, 0); 2014 if ((num == OFFT_MAX) || (num <= 0) || (expr == val)) 2015 return 0; 2016 2017 switch(*expr) { 2018 case 'b': 2019 t = num; 2020 num *= 512; 2021 if (t > num) 2022 return 0; 2023 ++expr; 2024 break; 2025 case 'k': 2026 t = num; 2027 num *= 1024; 2028 if (t > num) 2029 return 0; 2030 ++expr; 2031 break; 2032 case 'm': 2033 t = num; 2034 num *= 1048576; 2035 if (t > num) 2036 return 0; 2037 ++expr; 2038 break; 2039 case 'w': 2040 t = num; 2041 num *= sizeof(int); 2042 if (t > num) 2043 return 0; 2044 ++expr; 2045 break; 2046 } 2047 2048 switch(*expr) { 2049 case '\0': 2050 break; 2051 case '*': 2052 case 'x': 2053 t = num; 2054 num *= str_offt(expr + 1); 2055 if (t > num) 2056 return 0; 2057 break; 2058 default: 2059 return 0; 2060 } 2061 return num; 2062 } 2063 2064 static char * 2065 get_line(FILE *f) 2066 { 2067 char *name, *temp; 2068 size_t len; 2069 2070 name = fgetln(f, &len); 2071 if (!name) { 2072 get_line_error = ferror(f) ? GETLINE_FILE_CORRUPT : 0; 2073 return 0; 2074 } 2075 if (name[len-1] != '\n') 2076 len++; 2077 temp = malloc(len); 2078 if (!temp) { 2079 get_line_error = GETLINE_OUT_OF_MEM; 2080 return 0; 2081 } 2082 memcpy(temp, name, len-1); 2083 temp[len-1] = 0; 2084 return temp; 2085 } 2086 2087 /* 2088 * no_op() 2089 * for those option functions where the archive format has nothing to do. 2090 * Return: 2091 * 0 2092 */ 2093 2094 static int 2095 no_op(void) 2096 { 2097 return 0; 2098 } 2099 2100 /* 2101 * pax_usage() 2102 * print the usage summary to the user 2103 */ 2104 2105 static void 2106 pax_usage(void) 2107 { 2108 fprintf(stderr, 2109 "usage: pax [-0cdjnvzVO] [-E limit] [-f archive] [-N dbdir] [-s replstr] ...\n" 2110 " [-U user] ... [-G group] ... [-T [from_date][,to_date]] ...\n" 2111 " [pattern ...]\n"); 2112 fprintf(stderr, 2113 " pax -r [-cdijknuvzADOVYZ] [-E limit] [-f archive] [-N dbdir]\n" 2114 " [-o options] ... [-p string] ... [-s replstr] ... [-U user] ...\n" 2115 " [-G group] ... [-T [from_date][,to_date]] ... [pattern ...]\n"); 2116 fprintf(stderr, 2117 " pax -w [-dijtuvzAHLMOPVX] [-b blocksize] [[-a] [-f archive]] [-x format]\n" 2118 " [-B bytes] [-N dbdir] [-o options] ... [-s replstr] ...\n" 2119 " [-U user] ... [-G group] ...\n" 2120 " [-T [from_date][,to_date][/[c][m]]] ... [file ...]\n"); 2121 fprintf(stderr, 2122 " pax -r -w [-dijklntuvzADHLMOPVXYZ] [-N dbdir] [-p string] ...\n" 2123 " [-s replstr] ... [-U user] ... [-G group] ...\n" 2124 " [-T [from_date][,to_date][/[c][m]]] ... [file ...] directory\n"); 2125 exit(1); 2126 /* NOTREACHED */ 2127 } 2128 2129 /* 2130 * tar_usage() 2131 * print the usage summary to the user 2132 */ 2133 2134 static void 2135 tar_usage(void) 2136 { 2137 (void)fputs("usage: tar [-]{crtux}[-befhjklmopqvwzHOPSXZ014578] [archive] " 2138 "[blocksize]\n" 2139 " [-C directory] [-T file] [-s replstr] " 2140 "[file ...]\n", stderr); 2141 exit(1); 2142 /* NOTREACHED */ 2143 } 2144 2145 #ifndef NO_CPIO 2146 /* 2147 * cpio_usage() 2148 * print the usage summary to the user 2149 */ 2150 2151 static void 2152 cpio_usage(void) 2153 { 2154 2155 (void)fputs("usage: cpio -o [-aABcLvzZ] [-C bytes] [-F archive] " 2156 "[-H format] [-O archive]\n" 2157 " < name-list [> archive]\n" 2158 " cpio -i [-bBcdfmrsStuvzZ6] [-C bytes] [-E file] " 2159 "[-F archive] [-H format] \n" 2160 " [-I archive] " 2161 "[pattern ...] [< archive]\n" 2162 " cpio -p [-adlLmuv] destination-directory " 2163 "< name-list\n", stderr); 2164 exit(1); 2165 /* NOTREACHED */ 2166 } 2167 #endif 2168
Indexes created Fri Sep 26 20:09:58 GMT 2025