bin/pax/options.c

   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  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #if 0
  35 #ifndef lint
  36 static char sccsid[] = "@(#)options.c   8.2 (Berkeley) 4/18/94";
  37 #endif /* not lint */
  38 #endif
  39
  40 #include <sys/cdefs.h>
  41 __FBSDID("$FreeBSD$");
  42
  43 #include <sys/types.h>
  44 #include <sys/stat.h>
  45 #include <sys/mtio.h>
  46 #include <stdio.h>
  47 #include <string.h>
  48 #include <errno.h>
  49 #include <unistd.h>
  50 #include <stdlib.h>
  51 #include <limits.h>
  52 #include <paths.h>
  53 #include "pax.h"
  54 #include "options.h"
  55 #include "cpio.h"
  56 #include "tar.h"
  57 #include "extern.h"
  58
  59 /*
  60  * Routines which handle command line options
  61  */
  62
  63 static char flgch[] = FLGCH;    /* list of all possible flags */
  64 static OPLIST *ophead = NULL;   /* head for format specific options -x */
  65 static OPLIST *optail = NULL;   /* option tail */
  66
  67 static int no_op(void);
  68 static void printflg(unsigned int);
  69 static int c_frmt(const void *, const void *);
  70 static off_t str_offt(char *);
  71 static char *getline(FILE *fp);
  72 static void pax_options(int, char **);
  73 static void pax_usage(void);
  74 static void tar_options(int, char **);
  75 static void tar_usage(void);
  76 static void cpio_options(int, char **);
  77 static void cpio_usage(void);
  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 char *chdname;
  85
  86 #define GZIP_CMD        "gzip"          /* command to run as gzip */
  87 #define COMPRESS_CMD    "compress"      /* command to run as compress */
  88 #define BZIP2_CMD       "bzip2"         /* command to run as gzip */
  89
  90 /*
  91  *      Format specific routine table - MUST BE IN SORTED ORDER BY NAME
  92  *      (see pax.h for description of each function)
  93  *
  94  *      name, blksz, hdsz, udev, hlk, blkagn, inhead, id, st_read,
  95  *      read, end_read, st_write, write, end_write, trail,
  96  *      rd_data, wr_data, options
  97  */
  98
  99 FSUB fsub[] = {
 100 /* 0: OLD BINARY CPIO */
 101         {"bcpio", 5120, sizeof(HD_BCPIO), 1, 0, 0, 1, bcpio_id, cpio_strd,
 102         bcpio_rd, bcpio_endrd, cpio_stwr, bcpio_wr, cpio_endwr, cpio_trail,
 103         NULL, rd_wrfile, wr_rdfile, bad_opt},
 104
 105 /* 1: OLD OCTAL CHARACTER CPIO */
 106         {"cpio", 5120, sizeof(HD_CPIO), 1, 0, 0, 1, cpio_id, cpio_strd,
 107         cpio_rd, cpio_endrd, cpio_stwr, cpio_wr, cpio_endwr, cpio_trail,
 108         NULL, rd_wrfile, wr_rdfile, bad_opt},
 109
 110 /* 2: SVR4 HEX CPIO */
 111         {"sv4cpio", 5120, sizeof(HD_VCPIO), 1, 0, 0, 1, vcpio_id, cpio_strd,
 112         vcpio_rd, vcpio_endrd, cpio_stwr, vcpio_wr, cpio_endwr, cpio_trail,
 113         NULL, rd_wrfile, wr_rdfile, bad_opt},
 114
 115 /* 3: SVR4 HEX CPIO WITH CRC */
 116         {"sv4crc", 5120, sizeof(HD_VCPIO), 1, 0, 0, 1, crc_id, crc_strd,
 117         vcpio_rd, vcpio_endrd, crc_stwr, vcpio_wr, cpio_endwr, cpio_trail,
 118         NULL, rd_wrfile, wr_rdfile, bad_opt},
 119
 120 /* 4: OLD TAR */
 121         {"tar", 10240, BLKMULT, 0, 1, BLKMULT, 0, tar_id, no_op,
 122         tar_rd, tar_endrd, no_op, tar_wr, tar_endwr, NULL, tar_trail,
 123         rd_wrfile, wr_rdfile, tar_opt},
 124
 125 /* 5: POSIX USTAR */
 126         {"ustar", 10240, BLKMULT, 0, 1, BLKMULT, 0, ustar_id, ustar_strd,
 127         ustar_rd, tar_endrd, ustar_stwr, ustar_wr, tar_endwr, NULL, tar_trail,
 128         rd_wrfile, wr_rdfile, bad_opt},
 129 };
 130 #define F_OCPIO 0       /* format when called as cpio -6 */
 131 #define F_ACPIO 1       /* format when called as cpio -c */
 132 #define F_CPIO  3       /* format when called as cpio */
 133 #define F_OTAR  4       /* format when called as tar -o */
 134 #define F_TAR   5       /* format when called as tar */
 135 #define DEFLT   5       /* default write format from list above */
 136
 137 /*
 138  * ford is the archive search order used by get_arc() to determine what kind
 139  * of archive we are dealing with. This helps to properly id  archive formats
 140  * some formats may be subsets of others....
 141  */
 142 int ford[] = {5, 4, 3, 2, 1, 0, -1 };
 143
 144 /*
 145  * options()
 146  *      figure out if we are pax, tar or cpio. Call the appropriate options
 147  *      parser
 148  */
 149
 150 void
 151 options(int argc, char **argv)
 152 {
 153
 154         /*
 155          * Are we acting like pax, tar or cpio (based on argv[0])
 156          */
 157         if ((argv0 = strrchr(argv[0], '/')) != NULL)
 158                 argv0++;
 159         else
 160                 argv0 = argv[0];
 161
 162         if (strcmp(NM_TAR, argv0) == 0) {
 163                 tar_options(argc, argv);
 164                 return;
 165         }
 166         else if (strcmp(NM_CPIO, argv0) == 0) {
 167                 cpio_options(argc, argv);
 168                 return;
 169         }
 170         /*
 171          * assume pax as the default
 172          */
 173         argv0 = NM_PAX;
 174         pax_options(argc, argv);
 175         return;
 176 }
 177
 178 /*
 179  * pax_options()
 180  *      look at the user specified flags. set globals as required and check if
 181  *      the user specified a legal set of flags. If not, complain and exit
 182  */
 183
 184 static void
 185 pax_options(int argc, char **argv)
 186 {
 187         int c;
 188         size_t i;
 189         unsigned int flg = 0;
 190         unsigned int bflg = 0;
 191         char *pt;
 192         FSUB tmp;
 193
 194         /*
 195          * process option flags
 196          */
 197         while ((c=getopt(argc,argv,"ab:cdf:iklno:p:rs:tuvwx:zB:DE:G:HLPT:U:XYZ"))
 198             != -1) {
 199                 switch (c) {
 200                 case 'a':
 201                         /*
 202                          * append
 203                          */
 204                         flg |= AF;
 205                         break;
 206                 case 'b':
 207                         /*
 208                          * specify blocksize
 209                          */
 210                         flg |= BF;
 211                         if ((wrblksz = (int)str_offt(optarg)) <= 0) {
 212                                 paxwarn(1, "Invalid block size %s", optarg);
 213                                 pax_usage();
 214                         }
 215                         break;
 216                 case 'c':
 217                         /*
 218                          * inverse match on patterns
 219                          */
 220                         cflag = 1;
 221                         flg |= CF;
 222                         break;
 223                 case 'd':
 224                         /*
 225                          * match only dir on extract, not the subtree at dir
 226                          */
 227                         dflag = 1;
 228                         flg |= DF;
 229                         break;
 230                 case 'f':
 231                         /*
 232                          * filename where the archive is stored
 233                          */
 234                         arcname = optarg;
 235                         flg |= FF;
 236                         break;
 237                 case 'i':
 238                         /*
 239                          * interactive file rename
 240                          */
 241                         iflag = 1;
 242                         flg |= IF;
 243                         break;
 244                 case 'k':
 245                         /*
 246                          * do not clobber files that exist
 247                          */
 248                         kflag = 1;
 249                         flg |= KF;
 250                         break;
 251                 case 'l':
 252                         /*
 253                          * try to link src to dest with copy (-rw)
 254                          */
 255                         lflag = 1;
 256                         flg |= LF;
 257                         break;
 258                 case 'n':
 259                         /*
 260                          * select first match for a pattern only
 261                          */
 262                         nflag = 1;
 263                         flg |= NF;
 264                         break;
 265                 case 'o':
 266                         /*
 267                          * pass format specific options
 268                          */
 269                         flg |= OF;
 270                         if (opt_add(optarg) < 0)
 271                                 pax_usage();
 272                         break;
 273                 case 'p':
 274                         /*
 275                          * specify file characteristic options
 276                          */
 277                         for (pt = optarg; *pt != '\0'; ++pt) {
 278                                 switch(*pt) {
 279                                 case 'a':
 280                                         /*
 281                                          * do not preserve access time
 282                                          */
 283                                         patime = 0;
 284                                         break;
 285                                 case 'e':
 286                                         /*
 287                                          * preserve user id, group id, file
 288                                          * mode, access/modification times
 289                                          */
 290                                         pids = 1;
 291                                         pmode = 1;
 292                                         patime = 1;
 293                                         pmtime = 1;
 294                                         break;
 295                                 case 'm':
 296                                         /*
 297                                          * do not preserve modification time
 298                                          */
 299                                         pmtime = 0;
 300                                         break;
 301                                 case 'o':
 302                                         /*
 303                                          * preserve uid/gid
 304                                          */
 305                                         pids = 1;
 306                                         break;
 307                                 case 'p':
 308                                         /*
 309                                          * preserver file mode bits
 310                                          */
 311                                         pmode = 1;
 312                                         break;
 313                                 default:
 314                                         paxwarn(1, "Invalid -p string: %c", *pt);
 315                                         pax_usage();
 316                                         break;
 317                                 }
 318                         }
 319                         flg |= PF;
 320                         break;
 321                 case 'r':
 322                         /*
 323                          * read the archive
 324                          */
 325                         flg |= RF;
 326                         break;
 327                 case 's':
 328                         /*
 329                          * file name substitution name pattern
 330                          */
 331                         if (rep_add(optarg) < 0) {
 332                                 pax_usage();
 333                                 break;
 334                         }
 335                         flg |= SF;
 336                         break;
 337                 case 't':
 338                         /*
 339                          * preserve access time on file system nodes we read
 340                          */
 341                         tflag = 1;
 342                         flg |= TF;
 343                         break;
 344                 case 'u':
 345                         /*
 346                          * ignore those older files
 347                          */
 348                         uflag = 1;
 349                         flg |= UF;
 350                         break;
 351                 case 'v':
 352                         /*
 353                          * verbose operation mode
 354                          */
 355                         vflag = 1;
 356                         flg |= VF;
 357                         break;
 358                 case 'w':
 359                         /*
 360                          * write an archive
 361                          */
 362                         flg |= WF;
 363                         break;
 364                 case 'x':
 365                         /*
 366                          * specify an archive format on write
 367                          */
 368                         tmp.name = optarg;
 369                         if ((frmt = (FSUB *)bsearch((void *)&tmp, (void *)fsub,
 370                             sizeof(fsub)/sizeof(FSUB), sizeof(FSUB), c_frmt)) != NULL) {
 371                                 flg |= XF;
 372                                 break;
 373                         }
 374                         paxwarn(1, "Unknown -x format: %s", optarg);
 375                         (void)fputs("pax: Known -x formats are:", stderr);
 376                         for (i = 0; i < (sizeof(fsub)/sizeof(FSUB)); ++i)
 377                                 (void)fprintf(stderr, " %s", fsub[i].name);
 378                         (void)fputs("\n\n", stderr);
 379                         pax_usage();
 380                         break;
 381                 case 'z':
 382                         /*
 383                          * use gzip.  Non standard option.
 384                          */
 385                         gzip_program = GZIP_CMD;
 386                         break;
 387                 case 'B':
 388                         /*
 389                          * non-standard option on number of bytes written on a
 390                          * single archive volume.
 391                          */
 392                         if ((wrlimit = str_offt(optarg)) <= 0) {
 393                                 paxwarn(1, "Invalid write limit %s", optarg);
 394                                 pax_usage();
 395                         }
 396                         if (wrlimit % BLKMULT) {
 397                                 paxwarn(1, "Write limit is not a %d byte multiple",
 398                                     BLKMULT);
 399                                 pax_usage();
 400                         }
 401                         flg |= CBF;
 402                         break;
 403                 case 'D':
 404                         /*
 405                          * On extraction check file inode change time before the
 406                          * modification of the file name. Non standard option.
 407                          */
 408                         Dflag = 1;
 409                         flg |= CDF;
 410                         break;
 411                 case 'E':
 412                         /*
 413                          * non-standard limit on read faults
 414                          * 0 indicates stop after first error, values
 415                          * indicate a limit, "NONE" try forever
 416                          */
 417                         flg |= CEF;
 418                         if (strcmp(NONE, optarg) == 0)
 419                                 maxflt = -1;
 420                         else if ((maxflt = atoi(optarg)) < 0) {
 421                                 paxwarn(1, "Error count value must be positive");
 422                                 pax_usage();
 423                         }
 424                         break;
 425                 case 'G':
 426                         /*
 427                          * non-standard option for selecting files within an
 428                          * archive by group (gid or name)
 429                          */
 430                         if (grp_add(optarg) < 0) {
 431                                 pax_usage();
 432                                 break;
 433                         }
 434                         flg |= CGF;
 435                         break;
 436                 case 'H':
 437                         /*
 438                          * follow command line symlinks only
 439                          */
 440                         Hflag = 1;
 441                         flg |= CHF;
 442                         break;
 443                 case 'L':
 444                         /*
 445                          * follow symlinks
 446                          */
 447                         Lflag = 1;
 448                         flg |= CLF;
 449                         break;
 450                 case 'P':
 451                         /*
 452                          * do NOT follow symlinks (default)
 453                          */
 454                         Lflag = 0;
 455                         flg |= CPF;
 456                         break;
 457                 case 'T':
 458                         /*
 459                          * non-standard option for selecting files within an
 460                          * archive by modification time range (lower,upper)
 461                          */
 462                         if (trng_add(optarg) < 0) {
 463                                 pax_usage();
 464                                 break;
 465                         }
 466                         flg |= CTF;
 467                         break;
 468                 case 'U':
 469                         /*
 470                          * non-standard option for selecting files within an
 471                          * archive by user (uid or name)
 472                          */
 473                         if (usr_add(optarg) < 0) {
 474                                 pax_usage();
 475                                 break;
 476                         }
 477                         flg |= CUF;
 478                         break;
 479                 case 'X':
 480                         /*
 481                          * do not pass over mount points in the file system
 482                          */
 483                         Xflag = 1;
 484                         flg |= CXF;
 485                         break;
 486                 case 'Y':
 487                         /*
 488                          * On extraction check file inode change time after the
 489                          * modification of the file name. Non standard option.
 490                          */
 491                         Yflag = 1;
 492                         flg |= CYF;
 493                         break;
 494                 case 'Z':
 495                         /*
 496                          * On extraction check modification time after the
 497                          * modification of the file name. Non standard option.
 498                          */
 499                         Zflag = 1;
 500                         flg |= CZF;
 501                         break;
 502                 default:
 503                         pax_usage();
 504                         break;
 505                 }
 506         }
 507
 508         /*
 509          * figure out the operation mode of pax read,write,extract,copy,append
 510          * or list. check that we have not been given a bogus set of flags
 511          * for the operation mode.
 512          */
 513         if (ISLIST(flg)) {
 514                 act = LIST;
 515                 listf = stdout;
 516                 bflg = flg & BDLIST;
 517         } else if (ISEXTRACT(flg)) {
 518                 act = EXTRACT;
 519                 bflg = flg & BDEXTR;
 520         } else if (ISARCHIVE(flg)) {
 521                 act = ARCHIVE;
 522                 bflg = flg & BDARCH;
 523         } else if (ISAPPND(flg)) {
 524                 act = APPND;
 525                 bflg = flg & BDARCH;
 526         } else if (ISCOPY(flg)) {
 527                 act = COPY;
 528                 bflg = flg & BDCOPY;
 529         } else
 530                 pax_usage();
 531         if (bflg) {
 532                 printflg(flg);
 533                 pax_usage();
 534         }
 535
 536         /*
 537          * if we are writing (ARCHIVE) we use the default format if the user
 538          * did not specify a format. when we write during an APPEND, we will
 539          * adopt the format of the existing archive if none was supplied.
 540          */
 541         if (!(flg & XF) && (act == ARCHIVE))
 542                 frmt = &(fsub[DEFLT]);
 543
 544         /*
 545          * process the args as they are interpreted by the operation mode
 546          */
 547         switch (act) {
 548         case LIST:
 549         case EXTRACT:
 550                 for (; optind < argc; optind++)
 551                         if (pat_add(argv[optind], NULL) < 0)
 552                                 pax_usage();
 553                 break;
 554         case COPY:
 555                 if (optind >= argc) {
 556                         paxwarn(0, "Destination directory was not supplied");
 557                         pax_usage();
 558                 }
 559                 --argc;
 560                 dirptr = argv[argc];
 561                 /* FALLTHROUGH */
 562         case ARCHIVE:
 563         case APPND:
 564                 for (; optind < argc; optind++)
 565                         if (ftree_add(argv[optind], 0) < 0)
 566                                 pax_usage();
 567                 /*
 568                  * no read errors allowed on updates/append operation!
 569                  */
 570                 maxflt = 0;
 571                 break;
 572         }
 573 }
 574
 575
 576 /*
 577  * tar_options()
 578  *      look at the user specified flags. set globals as required and check if
 579  *      the user specified a legal set of flags. If not, complain and exit
 580  */
 581
 582 static void
 583 tar_options(int argc, char **argv)
 584 {
 585         int c;
 586         int fstdin = 0;
 587         int Oflag = 0;
 588         int nincfiles = 0;
 589         int incfiles_max = 0;
 590         struct incfile {
 591                 char *file;
 592                 char *dir;
 593         };
 594         struct incfile *incfiles = NULL;
 595
 596         /*
 597          * Set default values.
 598          */
 599         rmleadslash = 1;
 600
 601         /*
 602          * process option flags
 603          */
 604         while ((c = getoldopt(argc, argv,
 605             "b:cef:hjmopqruts:vwxyzBC:HI:LOPXZ014578")) != -1) {
 606                 switch(c) {
 607                 case 'b':
 608                         /*
 609                          * specify blocksize in 512-byte blocks
 610                          */
 611                         if ((wrblksz = (int)str_offt(optarg)) <= 0) {
 612                                 paxwarn(1, "Invalid block size %s", optarg);
 613                                 tar_usage();
 614                         }
 615                         wrblksz *= 512;         /* XXX - check for int oflow */
 616                         break;
 617                 case 'c':
 618                         /*
 619                          * create an archive
 620                          */
 621                         act = ARCHIVE;
 622                         break;
 623                 case 'e':
 624                         /*
 625                          * stop after first error
 626                          */
 627                         maxflt = 0;
 628                         break;
 629                 case 'f':
 630                         /*
 631                          * filename where the archive is stored
 632                          */
 633                         if ((optarg[0] == '-') && (optarg[1]== '\0')) {
 634                                 /*
 635                                  * treat a - as stdin
 636                                  */
 637                                 fstdin = 1;
 638                                 arcname = NULL;
 639                                 break;
 640                         }
 641                         fstdin = 0;
 642                         arcname = optarg;
 643                         break;
 644                 case 'h':
 645                         /*
 646                          * follow symlinks
 647                          */
 648                         Lflag = 1;
 649                         break;
 650                 case 'j':
 651                 case 'y':
 652                         /*
 653                          * use bzip2.  Non standard option.
 654                          */
 655                         gzip_program = BZIP2_CMD;
 656                         break;
 657                 case 'm':
 658                         /*
 659                          * do not preserve modification time
 660                          */
 661                         pmtime = 0;
 662                         break;
 663                 case 'o':
 664                         if (opt_add("write_opt=nodir") < 0)
 665                                 tar_usage();
 666                 case 'O':
 667                         Oflag = 1;
 668                         break;
 669                 case 'p':
 670                         /*
 671                          * preserve uid/gid and file mode, regardless of umask
 672                          */
 673                         pmode = 1;
 674                         pids = 1;
 675                         break;
 676                 case 'q':
 677                         /*
 678                          * select first match for a pattern only
 679                          */
 680                         nflag = 1;
 681                         break;
 682                 case 'r':
 683                 case 'u':
 684                         /*
 685                          * append to the archive
 686                          */
 687                         act = APPND;
 688                         break;
 689                 case 's':
 690                         /*
 691                          * file name substitution name pattern
 692                          */
 693                         if (rep_add(optarg) < 0) {
 694                                 tar_usage();
 695                                 break;
 696                         }
 697                         break;
 698                 case 't':
 699                         /*
 700                          * list contents of the tape
 701                          */
 702                         act = LIST;
 703                         break;
 704                 case 'v':
 705                         /*
 706                          * verbose operation mode
 707                          */
 708                         vflag++;
 709                         break;
 710                 case 'w':
 711                         /*
 712                          * interactive file rename
 713                          */
 714                         iflag = 1;
 715                         break;
 716                 case 'x':
 717                         /*
 718                          * extract an archive, preserving mode,
 719                          * and mtime if possible.
 720                          */
 721                         act = EXTRACT;
 722                         pmtime = 1;
 723                         break;
 724                 case 'z':
 725                         /*
 726                          * use gzip.  Non standard option.
 727                          */
 728                         gzip_program = GZIP_CMD;
 729                         break;
 730                 case 'B':
 731                         /*
 732                          * Nothing to do here, this is pax default
 733                          */
 734                         break;
 735                 case 'C':
 736                         chdname = optarg;
 737                         break;
 738                 case 'H':
 739                         /*
 740                          * follow command line symlinks only
 741                          */
 742                         Hflag = 1;
 743                         break;
 744                 case 'I':
 745                         if (++nincfiles > incfiles_max) {
 746                                 incfiles_max = nincfiles + 3;
 747                                 incfiles = realloc(incfiles,
 748                                     sizeof(*incfiles) * incfiles_max);
 749                                 if (incfiles == NULL) {
 750                                         paxwarn(0, "Unable to allocate space "
 751                                             "for option list");
 752                                         exit(1);
 753                                 }
 754                         }
 755                         incfiles[nincfiles - 1].file = optarg;
 756                         incfiles[nincfiles - 1].dir = chdname;
 757                         break;
 758                 case 'L':
 759                         /*
 760                          * follow symlinks
 761                          */
 762                         Lflag = 1;
 763                         break;
 764                 case 'P':
 765                         /*
 766                          * do not remove leading '/' from pathnames
 767                          */
 768                         rmleadslash = 0;
 769                         break;
 770                 case 'X':
 771                         /*
 772                          * do not pass over mount points in the file system
 773                          */
 774                         Xflag = 1;
 775                         break;
 776                 case 'Z':
 777                         /*
 778                          * use compress.
 779                          */
 780                         gzip_program = COMPRESS_CMD;
 781                         break;
 782                 case '0':
 783                         arcname = DEV_0;
 784                         break;
 785                 case '1':
 786                         arcname = DEV_1;
 787                         break;
 788                 case '4':
 789                         arcname = DEV_4;
 790                         break;
 791                 case '5':
 792                         arcname = DEV_5;
 793                         break;
 794                 case '7':
 795                         arcname = DEV_7;
 796                         break;
 797                 case '8':
 798                         arcname = DEV_8;
 799                         break;
 800                 default:
 801                         tar_usage();
 802                         break;
 803                 }
 804         }
 805         argc -= optind;
 806         argv += optind;
 807
 808         /* Traditional tar behaviour (pax uses stderr unless in list mode) */
 809         if (fstdin == 1 && act == ARCHIVE)
 810                 listf = stderr;
 811         else
 812                 listf = stdout;
 813
 814         /* Traditional tar behaviour (pax wants to read file list from stdin) */
 815         if ((act == ARCHIVE || act == APPND) && argc == 0 && nincfiles == 0)
 816                 exit(0);
 817
 818         /*
 819          * if we are writing (ARCHIVE) specify tar, otherwise run like pax
 820          * (unless -o specified)
 821          */
 822         if (act == ARCHIVE || act == APPND)
 823                 frmt = &(fsub[Oflag ? F_OTAR : F_TAR]);
 824         else if (Oflag) {
 825                 paxwarn(1, "The -O/-o options are only valid when writing an archive");
 826                 tar_usage();            /* only valid when writing */
 827         }
 828
 829         /*
 830          * process the args as they are interpreted by the operation mode
 831          */
 832         switch (act) {
 833         case LIST:
 834         case EXTRACT:
 835         default:
 836                 {
 837                         int sawpat = 0;
 838                         char *file, *dir = NULL;
 839
 840                         while (nincfiles || *argv != NULL) {
 841                                 /*
 842                                  * If we queued up any include files,
 843                                  * pull them in now.  Otherwise, check
 844                                  * for -I and -C positional flags.
 845                                  * Anything else must be a file to
 846                                  * extract.
 847                                  */
 848                                 if (nincfiles) {
 849                                         file = incfiles->file;
 850                                         dir = incfiles->dir;
 851                                         incfiles++;
 852                                         nincfiles--;
 853                                 } else if (strcmp(*argv, "-I") == 0) {
 854                                         if (*++argv == NULL)
 855                                                 break;
 856                                         file = *argv++;
 857                                         dir = chdname;
 858                                 } else
 859                                         file = NULL;
 860                                 if (file != NULL) {
 861                                         FILE *fp;
 862                                         char *str;
 863
 864                                         if (strcmp(file, "-") == 0)
 865                                                 fp = stdin;
 866                                         else if ((fp = fopen(file, "r")) == NULL) {
 867                                                 paxwarn(1, "Unable to open file '%s' for read", file);
 868                                                 tar_usage();
 869                                         }
 870                                         while ((str = getline(fp)) != NULL) {
 871                                                 if (pat_add(str, dir) < 0)
 872                                                         tar_usage();
 873                                                 sawpat = 1;
 874                                         }
 875                                         if (strcmp(file, "-") != 0)
 876                                                 fclose(fp);
 877                                         if (getline_error) {
 878                                                 paxwarn(1, "Problem with file '%s'", file);
 879                                                 tar_usage();
 880                                         }
 881                                 } else if (strcmp(*argv, "-C") == 0) {
 882                                         if (*++argv == NULL)
 883                                                 break;
 884                                         chdname = *argv++;
 885                                 } else if (pat_add(*argv++, chdname) < 0)
 886                                         tar_usage();
 887                                 else
 888                                         sawpat = 1;
 889                         }
 890                         /*
 891                          * if patterns were added, we are doing chdir()
 892                          * on a file-by-file basis, else, just one
 893                          * global chdir (if any) after opening input.
 894                          */
 895                         if (sawpat > 0)
 896                                 chdname = NULL;
 897                 }
 898                 break;
 899         case ARCHIVE:
 900         case APPND:
 901                 if (chdname != NULL) {  /* initial chdir() */
 902                         if (ftree_add(chdname, 1) < 0)
 903                                 tar_usage();
 904                 }
 905
 906                 while (nincfiles || *argv != NULL) {
 907                         char *file, *dir = NULL;
 908
 909                         /*
 910                          * If we queued up any include files, pull them in
 911                          * now.  Otherwise, check for -I and -C positional
 912                          * flags.  Anything else must be a file to include
 913                          * in the archive.
 914                          */
 915                         if (nincfiles) {
 916                                 file = incfiles->file;
 917                                 dir = incfiles->dir;
 918                                 incfiles++;
 919                                 nincfiles--;
 920                         } else if (strcmp(*argv, "-I") == 0) {
 921                                 if (*++argv == NULL)
 922                                         break;
 923                                 file = *argv++;
 924                                 dir = NULL;
 925                         } else
 926                                 file = NULL;
 927                         if (file != NULL) {
 928                                 FILE *fp;
 929                                 char *str;
 930
 931                                 /* Set directory if needed */
 932                                 if (dir) {
 933                                         if (ftree_add(dir, 1) < 0)
 934                                                 tar_usage();
 935                                 }
 936
 937                                 if (strcmp(file, "-") == 0)
 938                                         fp = stdin;
 939                                 else if ((fp = fopen(file, "r")) == NULL) {
 940                                         paxwarn(1, "Unable to open file '%s' for read", file);
 941                                         tar_usage();
 942                                 }
 943                                 while ((str = getline(fp)) != NULL) {
 944                                         if (ftree_add(str, 0) < 0)
 945                                                 tar_usage();
 946                                 }
 947                                 if (strcmp(file, "-") != 0)
 948                                         fclose(fp);
 949                                 if (getline_error) {
 950                                         paxwarn(1, "Problem with file '%s'",
 951                                             file);
 952                                         tar_usage();
 953                                 }
 954                         } else if (strcmp(*argv, "-C") == 0) {
 955                                 if (*++argv == NULL)
 956                                         break;
 957                                 if (ftree_add(*argv++, 1) < 0)
 958                                         tar_usage();
 959                         } else if (ftree_add(*argv++, 0) < 0)
 960                                 tar_usage();
 961                 }
 962                 /*
 963                  * no read errors allowed on updates/append operation!
 964                  */
 965                 maxflt = 0;
 966                 break;
 967         }
 968         if (!fstdin && ((arcname == NULL) || (*arcname == '\0'))) {
 969                 arcname = getenv("TAPE");
 970                 if ((arcname == NULL) || (*arcname == '\0'))
 971                         arcname = _PATH_DEFTAPE;
 972         }
 973 }
 974
 975 static int
 976 mkpath(char *path)
 977 {
 978         struct stat sb;
 979         char *slash;
 980         int done = 0;
 981
 982         slash = path;
 983
 984         while (!done) {
 985                 slash += strspn(slash, "/");
 986                 slash += strcspn(slash, "/");
 987
 988                 done = (*slash == '\0');
 989                 *slash = '\0';
 990
 991                 if (stat(path, &sb)) {
 992                         if (errno != ENOENT || mkdir(path, 0777)) {
 993                                 paxwarn(1, "%s", path);
 994                                 return (-1);
 995                         }
 996                 } else if (!S_ISDIR(sb.st_mode)) {
 997                         syswarn(1, ENOTDIR, "%s", path);
 998                         return (-1);
 999                 }
1000
1001                 if (!done)
1002                         *slash = '/';
1003         }
1004
1005         return (0);
1006 }
1007 /*
1008  * cpio_options()
1009  *      look at the user specified flags. set globals as required and check if
1010  *      the user specified a legal set of flags. If not, complain and exit
1011  */
1012
1013 static void
1014 cpio_options(int argc, char **argv)
1015 {
1016         int c;
1017         size_t i;
1018         char *str;
1019         FSUB tmp;
1020         FILE *fp;
1021
1022         kflag = 1;
1023         pids = 1;
1024         pmode = 1;
1025         pmtime = 0;
1026         arcname = NULL;
1027         dflag = 1;
1028         act = -1;
1029         nodirs = 1;
1030         while ((c=getopt(argc,argv,"abcdfiklmoprstuvzABC:E:F:H:I:LO:SZ6")) != -1)
1031                 switch (c) {
1032                         case 'a':
1033                                 /*
1034                                  * preserve access time on files read
1035                                  */
1036                                 tflag = 1;
1037                                 break;
1038                         case 'b':
1039                                 /*
1040                                  * swap bytes and half-words when reading data
1041                                  */
1042                                 break;
1043                         case 'c':
1044                                 /*
1045                                  * ASCII cpio header
1046                                  */
1047                                 frmt = &(fsub[F_ACPIO]);
1048                                 break;
1049                         case 'd':
1050                                 /*
1051                                  * create directories as needed
1052                                  */
1053                                 nodirs = 0;
1054                                 break;
1055                         case 'f':
1056                                 /*
1057                                  * invert meaning of pattern list
1058                                  */
1059                                 cflag = 1;
1060                                 break;
1061                         case 'i':
1062                                 /*
1063                                  * restore an archive
1064                                  */
1065                                 act = EXTRACT;
1066                                 break;
1067                         case 'k':
1068                                 break;
1069                         case 'l':
1070                                 /*
1071                                  * use links instead of copies when possible
1072                                  */
1073                                 lflag = 1;
1074                                 break;
1075                         case 'm':
1076                                 /*
1077                                  * preserve modification time
1078                                  */
1079                                 pmtime = 1;
1080                                 break;
1081                         case 'o':
1082                                 /*
1083                                  * create an archive
1084                                  */
1085                                 act = ARCHIVE;
1086                                 frmt = &(fsub[F_CPIO]);
1087                                 break;
1088                         case 'p':
1089                                 /*
1090                                  * copy-pass mode
1091                                  */
1092                                 act = COPY;
1093                                 break;
1094                         case 'r':
1095                                 /*
1096                                  * interactively rename files
1097                                  */
1098                                 iflag = 1;
1099                                 break;
1100                         case 's':
1101                                 /*
1102                                  * swap bytes after reading data
1103                                  */
1104                                 break;
1105                         case 't':
1106                                 /*
1107                                  * list contents of archive
1108                                  */
1109                                 act = LIST;
1110                                 listf = stdout;
1111                                 break;
1112                         case 'u':
1113                                 /*
1114                                  * replace newer files
1115                                  */
1116                                 kflag = 0;
1117                                 break;
1118                         case 'v':
1119                                 /*
1120                                  * verbose operation mode
1121                                  */
1122                                 vflag = 1;
1123                                 break;
1124                         case 'z':
1125                                 /*
1126                                  * use gzip.  Non standard option.
1127                                  */
1128                                 gzip_program = GZIP_CMD;
1129                                 break;
1130                         case 'A':
1131                                 /*
1132                                  * append mode
1133                                  */
1134                                 act = APPND;
1135                                 break;
1136                         case 'B':
1137                                 /*
1138                                  * Use 5120 byte block size
1139                                  */
1140                                 wrblksz = 5120;
1141                                 break;
1142                         case 'C':
1143                                 /*
1144                                  * set block size in bytes
1145                                  */
1146                                 wrblksz = atoi(optarg);
1147                                 break;
1148                         case 'E':
1149                                 /*
1150                                  * file with patterns to extract or list
1151                                  */
1152                                 if ((fp = fopen(optarg, "r")) == NULL) {
1153                                         paxwarn(1, "Unable to open file '%s' for read", optarg);
1154                                         cpio_usage();
1155                                 }
1156                                 while ((str = getline(fp)) != NULL) {
1157                                         pat_add(str, NULL);
1158                                 }
1159                                 fclose(fp);
1160                                 if (getline_error) {
1161                                         paxwarn(1, "Problem with file '%s'", optarg);
1162                                         cpio_usage();
1163                                 }
1164                                 break;
1165                         case 'F':
1166                         case 'I':
1167                         case 'O':
1168                                 /*
1169                                  * filename where the archive is stored
1170                                  */
1171                                 if ((optarg[0] == '-') && (optarg[1]== '\0')) {
1172                                         /*
1173                                          * treat a - as stdin
1174                                          */
1175                                         arcname = NULL;
1176                                         break;
1177                                 }
1178                                 arcname = optarg;
1179                                 break;
1180                         case 'H':
1181                                 /*
1182                                  * specify an archive format on write
1183                                  */
1184                                 tmp.name = optarg;
1185                                 if ((frmt = (FSUB *)bsearch((void *)&tmp, (void *)fsub,
1186                                     sizeof(fsub)/sizeof(FSUB), sizeof(FSUB), c_frmt)) != NULL)
1187                                         break;
1188                                 paxwarn(1, "Unknown -H format: %s", optarg);
1189                                 (void)fputs("cpio: Known -H formats are:", stderr);
1190                                 for (i = 0; i < (sizeof(fsub)/sizeof(FSUB)); ++i)
1191                                         (void)fprintf(stderr, " %s", fsub[i].name);
1192                                 (void)fputs("\n\n", stderr);
1193                                 cpio_usage();
1194                                 break;
1195                         case 'L':
1196                                 /*
1197                                  * follow symbolic links
1198                                  */
1199                                 Lflag = 1;
1200                                 break;
1201                         case 'S':
1202                                 /*
1203                                  * swap halfwords after reading data
1204                                  */
1205                                 break;
1206                         case 'Z':
1207                                 /*
1208                                  * use compress.  Non standard option.
1209                                  */
1210                                 gzip_program = COMPRESS_CMD;
1211                                 break;
1212                         case '6':
1213                                 /*
1214                                  * process Version 6 cpio format
1215                                  */
1216                                 frmt = &(fsub[F_OCPIO]);
1217                                 break;
1218                         case '?':
1219                         default:
1220                                 cpio_usage();
1221                                 break;
1222                 }
1223         argc -= optind;
1224         argv += optind;
1225
1226         /*
1227          * process the args as they are interpreted by the operation mode
1228          */
1229         switch (act) {
1230                 case LIST:
1231                 case EXTRACT:
1232                         while (*argv != NULL)
1233                                 if (pat_add(*argv++, NULL) < 0)
1234                                         cpio_usage();
1235                         break;
1236                 case COPY:
1237                         if (*argv == NULL) {
1238                                 paxwarn(0, "Destination directory was not supplied");
1239                                 cpio_usage();
1240                         }
1241                         dirptr = *argv;
1242                         if (mkpath(dirptr) < 0)
1243                                 cpio_usage();
1244                         --argc;
1245                         ++argv;
1246                         /* FALLTHROUGH */
1247                 case ARCHIVE:
1248                 case APPND:
1249                         if (*argv != NULL)
1250                                 cpio_usage();
1251                         /*
1252                          * no read errors allowed on updates/append operation!
1253                          */
1254                         maxflt = 0;
1255                         while ((str = getline(stdin)) != NULL) {
1256                                 ftree_add(str, 0);
1257                         }
1258                         if (getline_error) {
1259                                 paxwarn(1, "Problem while reading stdin");
1260                                 cpio_usage();
1261                         }
1262                         break;
1263                 default:
1264                         cpio_usage();
1265                         break;
1266         }
1267 }
1268
1269 /*
1270  * printflg()
1271  *      print out those invalid flag sets found to the user
1272  */
1273
1274 static void
1275 printflg(unsigned int flg)
1276 {
1277         int nxt;
1278         int pos = 0;
1279
1280         (void)fprintf(stderr,"%s: Invalid combination of options:", argv0);
1281         while ((nxt = ffs(flg)) != 0) {
1282                 flg = flg >> nxt;
1283                 pos += nxt;
1284                 (void)fprintf(stderr, " -%c", flgch[pos-1]);
1285         }
1286         (void)putc('\n', stderr);
1287 }
1288
1289 /*
1290  * c_frmt()
1291  *      comparison routine used by bsearch to find the format specified
1292  *      by the user
1293  */
1294
1295 static int
1296 c_frmt(const void *a, const void *b)
1297 {
1298         return(strcmp(((const FSUB *)a)->name, ((const FSUB *)b)->name));
1299 }
1300
1301 /*
1302  * opt_next()
1303  *      called by format specific options routines to get each format specific
1304  *      flag and value specified with -o
1305  * Return:
1306  *      pointer to next OPLIST entry or NULL (end of list).
1307  */
1308
1309 OPLIST *
1310 opt_next(void)
1311 {
1312         OPLIST *opt;
1313
1314         if ((opt = ophead) != NULL)
1315                 ophead = ophead->fow;
1316         return(opt);
1317 }
1318
1319 /*
1320  * bad_opt()
1321  *      generic routine used to complain about a format specific options
1322  *      when the format does not support options.
1323  */
1324
1325 int
1326 bad_opt(void)
1327 {
1328         OPLIST *opt;
1329
1330         if (ophead == NULL)
1331                 return(0);
1332         /*
1333          * print all we were given
1334          */
1335         paxwarn(1,"These format options are not supported");
1336         while ((opt = opt_next()) != NULL)
1337                 (void)fprintf(stderr, "\t%s = %s\n", opt->name, opt->value);
1338         pax_usage();
1339         return(0);
1340 }
1341
1342 /*
1343  * opt_add()
1344  *      breaks the value supplied to -o into an option name and value. Options
1345  *      are given to -o in the form -o name-value,name=value
1346  *      multiple -o may be specified.
1347  * Return:
1348  *      0 if format in name=value format, -1 if -o is passed junk.
1349  */
1350
1351 int
1352 opt_add(const char *str)
1353 {
1354         OPLIST *opt;
1355         char *frpt;
1356         char *pt;
1357         char *endpt;
1358         char *lstr;
1359
1360         if ((str == NULL) || (*str == '\0')) {
1361                 paxwarn(0, "Invalid option name");
1362                 return(-1);
1363         }
1364         if ((lstr = strdup(str)) == NULL) {
1365                 paxwarn(0, "Unable to allocate space for option list");
1366                 return(-1);
1367         }
1368         frpt = endpt = lstr;
1369
1370         /*
1371          * break into name and values pieces and stuff each one into a
1372          * OPLIST structure. When we know the format, the format specific
1373          * option function will go through this list
1374          */
1375         while ((frpt != NULL) && (*frpt != '\0')) {
1376                 if ((endpt = strchr(frpt, ',')) != NULL)
1377                         *endpt = '\0';
1378                 if ((pt = strchr(frpt, '=')) == NULL) {
1379                         paxwarn(0, "Invalid options format");
1380                         free(lstr);
1381                         return(-1);
1382                 }
1383                 if ((opt = (OPLIST *)malloc(sizeof(OPLIST))) == NULL) {
1384                         paxwarn(0, "Unable to allocate space for option list");
1385                         free(lstr);
1386                         return(-1);
1387                 }
1388                 *pt++ = '\0';
1389                 opt->name = frpt;
1390                 opt->value = pt;
1391                 opt->fow = NULL;
1392                 if (endpt != NULL)
1393                         frpt = endpt + 1;
1394                 else
1395                         frpt = NULL;
1396                 if (ophead == NULL) {
1397                         optail = ophead = opt;
1398                         continue;
1399                 }
1400                 optail->fow = opt;
1401                 optail = opt;
1402         }
1403         return(0);
1404 }
1405
1406 /*
1407  * str_offt()
1408  *      Convert an expression of the following forms to an off_t > 0.
1409  *      1) A positive decimal number.
1410  *      2) A positive decimal number followed by a b (mult by 512).
1411  *      3) A positive decimal number followed by a k (mult by 1024).
1412  *      4) A positive decimal number followed by a m (mult by 512).
1413  *      5) A positive decimal number followed by a w (mult by sizeof int)
1414  *      6) Two or more positive decimal numbers (with/without k,b or w).
1415  *         separated by x (also * for backwards compatibility), specifying
1416  *         the product of the indicated values.
1417  * Return:
1418  *      0 for an error, a positive value o.w.
1419  */
1420
1421 static off_t
1422 str_offt(char *val)
1423 {
1424         char *expr;
1425         off_t num, t;
1426
1427 #       ifdef NET2_STAT
1428         num = strtol(val, &expr, 0);
1429         if ((num == LONG_MAX) || (num <= 0) || (expr == val))
1430 #       else
1431         num = strtoq(val, &expr, 0);
1432         if ((num == QUAD_MAX) || (num <= 0) || (expr == val))
1433 #       endif
1434                 return(0);
1435
1436         switch(*expr) {
1437         case 'b':
1438                 t = num;
1439                 num *= 512;
1440                 if (t > num)
1441                         return(0);
1442                 ++expr;
1443                 break;
1444         case 'k':
1445                 t = num;
1446                 num *= 1024;
1447                 if (t > num)
1448                         return(0);
1449                 ++expr;
1450                 break;
1451         case 'm':
1452                 t = num;
1453                 num *= 1048576;
1454                 if (t > num)
1455                         return(0);
1456                 ++expr;
1457                 break;
1458         case 'w':
1459                 t = num;
1460                 num *= sizeof(int);
1461                 if (t > num)
1462                         return(0);
1463                 ++expr;
1464                 break;
1465         }
1466
1467         switch(*expr) {
1468                 case '\0':
1469                         break;
1470                 case '*':
1471                 case 'x':
1472                         t = num;
1473                         num *= str_offt(expr + 1);
1474                         if (t > num)
1475                                 return(0);
1476                         break;
1477                 default:
1478                         return(0);
1479         }
1480         return(num);
1481 }
1482
1483 char *
1484 getline(FILE *f)
1485 {
1486         char *name, *temp;
1487         size_t len;
1488
1489         name = fgetln(f, &len);
1490         if (!name) {
1491                 getline_error = ferror(f) ? GETLINE_FILE_CORRUPT : 0;
1492                 return(0);
1493         }
1494         if (name[len-1] != '\n')
1495                 len++;
1496         temp = malloc(len);
1497         if (!temp) {
1498                 getline_error = GETLINE_OUT_OF_MEM;
1499                 return(0);
1500         }
1501         memcpy(temp, name, len-1);
1502         temp[len-1] = 0;
1503         return(temp);
1504 }
1505
1506 /*
1507  * no_op()
1508  *      for those option functions where the archive format has nothing to do.
1509  * Return:
1510  *      0
1511  */
1512
1513 static int
1514 no_op(void)
1515 {
1516         return(0);
1517 }
1518
1519 /*
1520  * pax_usage()
1521  *      print the usage summary to the user
1522  */
1523
1524 void
1525 pax_usage(void)
1526 {
1527         (void)fputs("usage: pax [-cdnvz] [-E limit] [-f archive] ", stderr);
1528         (void)fputs("[-s replstr] ... [-U user] ...", stderr);
1529         (void)fputs("\n    [-G group] ... ", stderr);
1530         (void)fputs("[-T [from_date][,to_date]] ... ", stderr);
1531         (void)fputs("[pattern ...]\n", stderr);
1532         (void)fputs("       pax -r [-cdiknuvzDYZ] [-E limit] ", stderr);
1533         (void)fputs("[-f archive] [-o options] ... \n", stderr);
1534         (void)fputs("      [-p string] ... [-s replstr] ... ", stderr);
1535         (void)fputs("[-U user] ... [-G group] ...\n        ", stderr);
1536         (void)fputs("[-T [from_date][,to_date]] ... ", stderr);
1537         (void)fputs(" [pattern ...]\n", stderr);
1538         (void)fputs("       pax -w [-dituvzHLPX] [-b blocksize] ", stderr);
1539         (void)fputs("[ [-a] [-f archive] ] [-x format] \n", stderr);
1540         (void)fputs("      [-B bytes] [-s replstr] ... ", stderr);
1541         (void)fputs("[-o options] ... [-U user] ...", stderr);
1542         (void)fputs("\n    [-G group] ... ", stderr);
1543         (void)fputs("[-T [from_date][,to_date][/[c][m]]] ... ", stderr);
1544         (void)fputs("[file ...]\n", stderr);
1545         (void)fputs("       pax -r -w [-diklntuvDHLPXYZ] ", stderr);
1546         (void)fputs("[-p string] ... [-s replstr] ...", stderr);
1547         (void)fputs("\n    [-U user] ... [-G group] ... ", stderr);
1548         (void)fputs("[-T [from_date][,to_date][/[c][m]]] ... ", stderr);
1549         (void)fputs("\n    [file ...] directory\n", stderr);
1550         exit(1);
1551 }
1552
1553 /*
1554  * tar_usage()
1555  *      print the usage summary to the user
1556  */
1557
1558 void
1559 tar_usage(void)
1560 {
1561         (void)fputs("usage: tar [-]{crtux}[-befhjmopqsvwyzHLOPXZ014578] [blocksize] ",
1562                  stderr);
1563         (void)fputs("[archive] [replstr] [-C directory] [-I file] [file ...]\n",
1564             stderr);
1565         exit(1);
1566 }
1567
1568 /*
1569  * cpio_usage()
1570  *      print the usage summary to the user
1571  */
1572
1573 void
1574 cpio_usage(void)
1575 {
1576         (void)fputs("usage: cpio -o [-aABcLvVzZ] [-C bytes] [-H format] [-O archive]\n", stderr);
1577         (void)fputs("               [-F archive] < name-list [> archive]\n", stderr);
1578         (void)fputs("       cpio -i [-bBcdfmnrsStuvVzZ6] [-C bytes] [-E file] [-H format]\n", stderr);
1579         (void)fputs("               [-I archive] [-F archive] [pattern...] [< archive]\n", stderr);
1580         (void)fputs("       cpio -p [-adlLmuvV] destination-directory < name-list\n", stderr);
1581         exit(1);
1582 }