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  * 3. 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  * @(#)options.c        8.2 (Berkeley) 4/18/94
  34  * $FreeBSD: src/bin/pax/options.c,v 1.13.2.3 2001/08/01 05:03:11 obrien Exp $
  35  */
  36
  37 #include <sys/types.h>
  38 #include <sys/stat.h>
  39 #include <sys/mtio.h>
  40 #include <stdio.h>
  41 #include <string.h>
  42 #include <errno.h>
  43 #include <unistd.h>
  44 #include <stdlib.h>
  45 #include <limits.h>
  46 #include <paths.h>
  47 #include "pax.h"
  48 #include "options.h"
  49 #include "cpio.h"
  50 #include "tar.h"
  51 #include "extern.h"
  52
  53 /*
  54  * Routines which handle command line options
  55  */
  56
  57 static char flgch[] = FLGCH;    /* list of all possible flags */
  58 static OPLIST *ophead = NULL;   /* head for format specific options -x */
  59 static OPLIST *optail = NULL;   /* option tail */
  60
  61 static int no_op(void);
  62 static void printflg(unsigned int);
  63 static int c_frmt(const void *, const void *);
  64 static off_t str_offt(char *);
  65 static char *get_line(FILE *);
  66 static void pax_options(int, char **);
  67 static void pax_usage(void);
  68 static void tar_options(int, char **);
  69 static void tar_usage(void);
  70 static void cpio_options(int, char **);
  71 static void cpio_usage(void);
  72 static int mkpath(char *);
  73
  74 /* errors from get_line */
  75 #define GETLINE_FILE_CORRUPT 1
  76 #define GETLINE_OUT_OF_MEM 2
  77 static int get_line_error;
  78
  79
  80 #define GZIP_CMD        "gzip"          /* command to run as gzip */
  81 #define COMPRESS_CMD    "compress"      /* command to run as compress */
  82 #define BZIP2_CMD       "bzip2"         /* command to run as gzip */
  83
  84 /*
  85  *      Format specific routine table - MUST BE IN SORTED ORDER BY NAME
  86  *      (see pax.h for description of each function)
  87  *
  88  *      name, blksz, hdsz, udev, hlk, blkagn, inhead, id, st_read,
  89  *      read, end_read, st_write, write, end_write, trail,
  90  *      rd_data, wr_data, options
  91  */
  92
  93 FSUB fsub[] = {
  94 /* 0: OLD BINARY CPIO */
  95         {"bcpio", 5120, sizeof(HD_BCPIO), 1, 0, 0, 1, bcpio_id, cpio_strd,
  96         bcpio_rd, bcpio_endrd, cpio_stwr, bcpio_wr, cpio_endwr, cpio_trail,
  97         rd_wrfile, wr_rdfile, bad_opt},
  98
  99 /* 1: OLD OCTAL CHARACTER CPIO */
 100         {"cpio", 5120, sizeof(HD_CPIO), 1, 0, 0, 1, cpio_id, cpio_strd,
 101         cpio_rd, cpio_endrd, cpio_stwr, cpio_wr, cpio_endwr, cpio_trail,
 102         rd_wrfile, wr_rdfile, bad_opt},
 103
 104 /* 2: SVR4 HEX CPIO */
 105         {"sv4cpio", 5120, sizeof(HD_VCPIO), 1, 0, 0, 1, vcpio_id, cpio_strd,
 106         vcpio_rd, vcpio_endrd, cpio_stwr, vcpio_wr, cpio_endwr, cpio_trail,
 107         rd_wrfile, wr_rdfile, bad_opt},
 108
 109 /* 3: SVR4 HEX CPIO WITH CRC */
 110         {"sv4crc", 5120, sizeof(HD_VCPIO), 1, 0, 0, 1, crc_id, crc_strd,
 111         vcpio_rd, vcpio_endrd, crc_stwr, vcpio_wr, cpio_endwr, cpio_trail,
 112         rd_wrfile, wr_rdfile, bad_opt},
 113
 114 /* 4: OLD TAR */
 115         {"tar", 10240, BLKMULT, 0, 1, BLKMULT, 0, tar_id, no_op,
 116         tar_rd, tar_endrd, no_op, tar_wr, tar_endwr, tar_trail,
 117         rd_wrfile, wr_rdfile, tar_opt},
 118
 119 /* 5: POSIX USTAR */
 120         {"ustar", 10240, BLKMULT, 0, 1, BLKMULT, 0, ustar_id, ustar_strd,
 121         ustar_rd, tar_endrd, ustar_stwr, ustar_wr, tar_endwr, tar_trail,
 122         rd_wrfile, wr_rdfile, bad_opt},
 123 };
 124 #define F_OCPIO 0       /* format when called as cpio -6 */
 125 #define F_ACPIO 1       /* format when called as cpio -c */
 126 #define F_CPIO  3       /* format when called as cpio */
 127 #define F_OTAR  4       /* format when called as tar -o */
 128 #define F_TAR   5       /* format when called as tar */
 129 #define DEFLT   5       /* default write format from list above */
 130
 131 /*
 132  * ford is the archive search order used by get_arc() to determine what kind
 133  * of archive we are dealing with. This helps to properly id  archive formats
 134  * some formats may be subsets of others....
 135  */
 136 int ford[] = {5, 4, 3, 2, 1, 0, -1 };
 137
 138 /*
 139  * options()
 140  *      figure out if we are pax, tar or cpio. Call the appropriate options
 141  *      parser
 142  */
 143
 144 void
 145 options(int argc, char **argv)
 146 {
 147
 148         /*
 149          * Are we acting like pax, tar or cpio (based on argv[0])
 150          */
 151         if ((argv0 = strrchr(argv[0], '/')) != NULL)
 152                 argv0++;
 153         else
 154                 argv0 = argv[0];
 155
 156         if (strcmp(NM_TAR, argv0) == 0) {
 157                 tar_options(argc, argv);
 158                 return;
 159         }
 160         else if (strcmp(NM_CPIO, argv0) == 0) {
 161                 cpio_options(argc, argv);
 162                 return;
 163         }
 164         /*
 165          * assume pax as the default
 166          */
 167         argv0 = NM_PAX;
 168         pax_options(argc, argv);
 169         return;
 170 }
 171
 172 /*
 173  * pax_options()
 174  *      look at the user specified flags. set globals as required and check if
 175  *      the user specified a legal set of flags. If not, complain and exit
 176  */
 177
 178 static void
 179 pax_options(int argc, char **argv)
 180 {
 181         int c;
 182         int i;
 183         unsigned int flg = 0;
 184         unsigned int bflg = 0;
 185         char *pt;
 186         FSUB tmp;
 187
 188         /*
 189          * process option flags
 190          */
 191         while ((c=getopt(argc,argv,"ab:cdf:iklno:p:rs:tuvwx:zB:DE:G:HLOPT:U:XYZ"))
 192             != -1) {
 193                 switch (c) {
 194                 case 'a':
 195                         /*
 196                          * append
 197                          */
 198                         flg |= AF;
 199                         break;
 200                 case 'b':
 201                         /*
 202                          * specify blocksize
 203                          */
 204                         flg |= BF;
 205                         if ((wrblksz = (int)str_offt(optarg)) <= 0) {
 206                                 paxwarn(1, "Invalid block size %s", optarg);
 207                                 pax_usage();
 208                         }
 209                         break;
 210                 case 'c':
 211                         /*
 212                          * inverse match on patterns
 213                          */
 214                         cflag = 1;
 215                         flg |= CF;
 216                         break;
 217                 case 'd':
 218                         /*
 219                          * match only dir on extract, not the subtree at dir
 220                          */
 221                         dflag = 1;
 222                         flg |= DF;
 223                         break;
 224                 case 'f':
 225                         /*
 226                          * filename where the archive is stored
 227                          */
 228                         arcname = optarg;
 229                         flg |= FF;
 230                         break;
 231                 case 'i':
 232                         /*
 233                          * interactive file rename
 234                          */
 235                         iflag = 1;
 236                         flg |= IF;
 237                         break;
 238                 case 'k':
 239                         /*
 240                          * do not clobber files that exist
 241                          */
 242                         kflag = 1;
 243                         flg |= KF;
 244                         break;
 245                 case 'l':
 246                         /*
 247                          * try to link src to dest with copy (-rw)
 248                          */
 249                         lflag = 1;
 250                         flg |= LF;
 251                         break;
 252                 case 'n':
 253                         /*
 254                          * select first match for a pattern only
 255                          */
 256                         nflag = 1;
 257                         flg |= NF;
 258                         break;
 259                 case 'o':
 260                         /*
 261                          * pass format specific options
 262                          */
 263                         flg |= OF;
 264                         if (opt_add(optarg) < 0)
 265                                 pax_usage();
 266                         break;
 267                 case 'p':
 268                         /*
 269                          * specify file characteristic options
 270                          */
 271                         for (pt = optarg; *pt != '\0'; ++pt) {
 272                                 switch(*pt) {
 273                                 case 'a':
 274                                         /*
 275                                          * do not preserve access time
 276                                          */
 277                                         patime = 0;
 278                                         break;
 279                                 case 'e':
 280                                         /*
 281                                          * preserve user id, group id, file
 282                                          * mode, access/modification times
 283                                          */
 284                                         pids = 1;
 285                                         pmode = 1;
 286                                         patime = 1;
 287                                         pmtime = 1;
 288                                         break;
 289                                 case 'm':
 290                                         /*
 291                                          * do not preserve modification time
 292                                          */
 293                                         pmtime = 0;
 294                                         break;
 295                                 case 'o':
 296                                         /*
 297                                          * preserve uid/gid
 298                                          */
 299                                         pids = 1;
 300                                         break;
 301                                 case 'p':
 302                                         /*
 303                                          * preserve file mode bits
 304                                          */
 305                                         pmode = 1;
 306                                         break;
 307                                 default:
 308                                         paxwarn(1, "Invalid -p string: %c", *pt);
 309                                         pax_usage();
 310                                         break;
 311                                 }
 312                         }
 313                         flg |= PF;
 314                         break;
 315                 case 'r':
 316                         /*
 317                          * read the archive
 318                          */
 319                         flg |= RF;
 320                         break;
 321                 case 's':
 322                         /*
 323                          * file name substitution name pattern
 324                          */
 325                         if (rep_add(optarg) < 0) {
 326                                 pax_usage();
 327                                 break;
 328                         }
 329                         flg |= SF;
 330                         break;
 331                 case 't':
 332                         /*
 333                          * preserve access time on filesystem nodes we read
 334                          */
 335                         tflag = 1;
 336                         flg |= TF;
 337                         break;
 338                 case 'u':
 339                         /*
 340                          * ignore those older files
 341                          */
 342                         uflag = 1;
 343                         flg |= UF;
 344                         break;
 345                 case 'v':
 346                         /*
 347                          * verbose operation mode
 348                          */
 349                         vflag = 1;
 350                         flg |= VF;
 351                         break;
 352                 case 'w':
 353                         /*
 354                          * write an archive
 355                          */
 356                         flg |= WF;
 357                         break;
 358                 case 'x':
 359                         /*
 360                          * specify an archive format on write
 361                          */
 362                         tmp.name = optarg;
 363                         if ((frmt = (FSUB *)bsearch((void *)&tmp, (void *)fsub,
 364                             sizeof(fsub)/sizeof(FSUB), sizeof(FSUB), c_frmt)) != NULL) {
 365                                 flg |= XF;
 366                                 break;
 367                         }
 368                         paxwarn(1, "Unknown -x format: %s", optarg);
 369                         fputs("pax: Known -x formats are:", stderr);
 370                         for (i = 0; i < (sizeof(fsub)/sizeof(FSUB)); ++i)
 371                                 fprintf(stderr, " %s", fsub[i].name);
 372                         fputs("\n\n", stderr);
 373                         pax_usage();
 374                         break;
 375                 case 'z':
 376                         /*
 377                          * use gzip.  Non standard option.
 378                          */
 379                         gzip_program = GZIP_CMD;
 380                         break;
 381                 case 'B':
 382                         /*
 383                          * non-standard option on number of bytes written on a
 384                          * single archive volume.
 385                          */
 386                         if ((wrlimit = str_offt(optarg)) <= 0) {
 387                                 paxwarn(1, "Invalid write limit %s", optarg);
 388                                 pax_usage();
 389                         }
 390                         if (wrlimit % BLKMULT) {
 391                                 paxwarn(1, "Write limit is not a %d byte multiple",
 392                                     BLKMULT);
 393                                 pax_usage();
 394                         }
 395                         flg |= CBF;
 396                         break;
 397                 case 'D':
 398                         /*
 399                          * On extraction check file inode change time before the
 400                          * modification of the file name. Non standard option.
 401                          */
 402                         Dflag = 1;
 403                         flg |= CDF;
 404                         break;
 405                 case 'E':
 406                         /*
 407                          * non-standard limit on read faults
 408                          * 0 indicates stop after first error, values
 409                          * indicate a limit, "NONE" try forever
 410                          */
 411                         flg |= CEF;
 412                         if (strcmp(NONE, optarg) == 0)
 413                                 maxflt = -1;
 414                         else if ((maxflt = atoi(optarg)) < 0) {
 415                                 paxwarn(1, "Error count value must be positive");
 416                                 pax_usage();
 417                         }
 418                         break;
 419                 case 'G':
 420                         /*
 421                          * non-standard option for selecting files within an
 422                          * archive by group (gid or name)
 423                          */
 424                         if (grp_add(optarg) < 0) {
 425                                 pax_usage();
 426                                 break;
 427                         }
 428                         flg |= CGF;
 429                         break;
 430                 case 'H':
 431                         /*
 432                          * follow command line symlinks only
 433                          */
 434                         Hflag = 1;
 435                         flg |= CHF;
 436                         break;
 437                 case 'L':
 438                         /*
 439                          * follow symlinks
 440                          */
 441                         Lflag = 1;
 442                         flg |= CLF;
 443                         break;
 444                 case 'O':
 445                         /*
 446                          * Force one volume. Non standard option.
 447                          */
 448                         force_one_volume = 1;
 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                 if (mkpath(dirptr) < 0)
 562                         exit(1);
 563                 /* FALLTHROUGH */
 564         case ARCHIVE:
 565         case APPND:
 566                 for (; optind < argc; optind++)
 567                         if (ftree_add(argv[optind], 0) < 0)
 568                                 pax_usage();
 569                 /*
 570                  * no read errors allowed on updates/append operation!
 571                  */
 572                 maxflt = 0;
 573                 break;
 574         }
 575 }
 576
 577
 578 /*
 579  * tar_options()
 580  *      look at the user specified flags. set globals as required and check if
 581  *      the user specified a legal set of flags. If not, complain and exit
 582  */
 583
 584 static void
 585 tar_options(int argc, char **argv)
 586 {
 587         int c;
 588         int fstdin = 0;
 589         int Oflag = 0;
 590         int nincfiles = 0;
 591         int incfiles_max = 0;
 592         struct incfile {
 593                 char *file;
 594                 char *dir;
 595         };
 596         struct incfile *incfiles = NULL;
 597
 598         /*
 599          * Set default values.
 600          */
 601         rmleadslash = 1;
 602
 603         /*
 604          * process option flags
 605          */
 606         while ((c = getoldopt(argc, argv,
 607             "b:cef:hjmopqruts:vwxyzBC:HI:LOPXZ014578")) != -1) {
 608                 switch(c) {
 609                 case 'b':
 610                         /*
 611                          * specify blocksize in 512-byte blocks
 612                          */
 613                         if ((wrblksz = (int)str_offt(optarg)) <= 0) {
 614                                 paxwarn(1, "Invalid block size %s", optarg);
 615                                 tar_usage();
 616                         }
 617                         wrblksz *= 512;         /* XXX - check for int oflow */
 618                         break;
 619                 case 'c':
 620                         /*
 621                          * create an archive
 622                          */
 623                         act = ARCHIVE;
 624                         break;
 625                 case 'e':
 626                         /*
 627                          * stop after first error
 628                          */
 629                         maxflt = 0;
 630                         break;
 631                 case 'f':
 632                         /*
 633                          * filename where the archive is stored
 634                          */
 635                         if ((optarg[0] == '-') && (optarg[1]== '\0')) {
 636                                 /*
 637                                  * treat a - as stdin
 638                                  */
 639                                 fstdin = 1;
 640                                 arcname = NULL;
 641                                 break;
 642                         }
 643                         fstdin = 0;
 644                         arcname = optarg;
 645                         break;
 646                 case 'h':
 647                         /*
 648                          * follow symlinks
 649                          */
 650                         Lflag = 1;
 651                         break;
 652                 case 'j':
 653                 case 'y':
 654                         /*
 655                          * use bzip2.  Non standard option.
 656                          */
 657                         gzip_program = BZIP2_CMD;
 658                         break;
 659                 case 'm':
 660                         /*
 661                          * do not preserve modification time
 662                          */
 663                         pmtime = 0;
 664                         break;
 665                 case 'o':
 666                         if (opt_add("write_opt=nodir") < 0)
 667                                 tar_usage();
 668                 case 'O':
 669                         Oflag = 1;
 670                         break;
 671                 case 'p':
 672                         /*
 673                          * preserve uid/gid and file mode, regardless of umask
 674                          */
 675                         pmode = 1;
 676                         pids = 1;
 677                         break;
 678                 case 'q':
 679                         /*
 680                          * select first match for a pattern only
 681                          */
 682                         nflag = 1;
 683                         break;
 684                 case 'r':
 685                 case 'u':
 686                         /*
 687                          * append to the archive
 688                          */
 689                         act = APPND;
 690                         break;
 691                 case 's':
 692                         /*
 693                          * file name substitution name pattern
 694                          */
 695                         if (rep_add(optarg) < 0) {
 696                                 tar_usage();
 697                                 break;
 698                         }
 699                         break;
 700                 case 't':
 701                         /*
 702                          * list contents of the tape
 703                          */
 704                         act = LIST;
 705                         break;
 706                 case 'v':
 707                         /*
 708                          * verbose operation mode
 709                          */
 710                         vflag++;
 711                         break;
 712                 case 'w':
 713                         /*
 714                          * interactive file rename
 715                          */
 716                         iflag = 1;
 717                         break;
 718                 case 'x':
 719                         /*
 720                          * extract an archive, preserving mode,
 721                          * and mtime if possible.
 722                          */
 723                         act = EXTRACT;
 724                         pmtime = 1;
 725                         break;
 726                 case 'z':
 727                         /*
 728                          * use gzip.  Non standard option.
 729                          */
 730                         gzip_program = GZIP_CMD;
 731                         break;
 732                 case 'B':
 733                         /*
 734                          * Nothing to do here, this is pax default
 735                          */
 736                         break;
 737                 case 'C':
 738                         chdname = optarg;
 739                         break;
 740                 case 'H':
 741                         /*
 742                          * follow command line symlinks only
 743                          */
 744                         Hflag = 1;
 745                         break;
 746                 case 'I':
 747                         if (++nincfiles > incfiles_max) {
 748                                 incfiles_max = nincfiles + 3;
 749                                 incfiles = realloc(incfiles,
 750                                     sizeof(*incfiles) * incfiles_max);
 751                                 if (incfiles == NULL) {
 752                                         paxwarn(0, "Unable to allocate space "
 753                                             "for option list");
 754                                         exit(1);
 755                                 }
 756                         }
 757                         incfiles[nincfiles - 1].file = optarg;
 758                         incfiles[nincfiles - 1].dir = chdname;
 759                         break;
 760                 case 'L':
 761                         /*
 762                          * follow symlinks
 763                          */
 764                         Lflag = 1;
 765                         break;
 766                 case 'P':
 767                         /*
 768                          * do not remove leading '/' from pathnames
 769                          */
 770                         rmleadslash = 0;
 771                         break;
 772                 case 'X':
 773                         /*
 774                          * do not pass over mount points in the file system
 775                          */
 776                         Xflag = 1;
 777                         break;
 778                 case 'Z':
 779                         /*
 780                          * use compress.
 781                          */
 782                         gzip_program = COMPRESS_CMD;
 783                         break;
 784                 case '0':
 785                         arcname = DEV_0;
 786                         break;
 787                 case '1':
 788                         arcname = DEV_1;
 789                         break;
 790                 case '4':
 791                         arcname = DEV_4;
 792                         break;
 793                 case '5':
 794                         arcname = DEV_5;
 795                         break;
 796                 case '7':
 797                         arcname = DEV_7;
 798                         break;
 799                 case '8':
 800                         arcname = DEV_8;
 801                         break;
 802                 default:
 803                         tar_usage();
 804                         break;
 805                 }
 806         }
 807         argc -= optind;
 808         argv += optind;
 809
 810         /* Traditional tar behaviour (pax uses stderr unless in list mode) */
 811         if (fstdin == 1 && act == ARCHIVE)
 812                 listf = stderr;
 813         else
 814                 listf = stdout;
 815
 816         /* Traditional tar behaviour (pax wants to read file list from stdin) */
 817         if ((act == ARCHIVE || act == APPND) && argc == 0 && nincfiles == 0)
 818                 exit(0);
 819
 820         /*
 821          * if we are writing (ARCHIVE) specify tar, otherwise run like pax
 822          * (unless -o specified)
 823          */
 824         if (act == ARCHIVE || act == APPND)
 825                 frmt = &(fsub[Oflag ? F_OTAR : F_TAR]);
 826         else if (Oflag) {
 827                 paxwarn(1, "The -O/-o options are only valid when writing an archive");
 828                 tar_usage();            /* only valid when writing */
 829         }
 830
 831         /*
 832          * process the args as they are interpreted by the operation mode
 833          */
 834         switch (act) {
 835         case LIST:
 836         case EXTRACT:
 837         default:
 838                 {
 839                         int sawpat = 0;
 840                         char *file, *dir = NULL;
 841
 842                         while (nincfiles || *argv != NULL) {
 843                                 /*
 844                                  * If we queued up any include files,
 845                                  * pull them in now.  Otherwise, check
 846                                  * for -I and -C positional flags.
 847                                  * Anything else must be a file to
 848                                  * extract.
 849                                  */
 850                                 if (nincfiles) {
 851                                         file = incfiles->file;
 852                                         dir = incfiles->dir;
 853                                         incfiles++;
 854                                         nincfiles--;
 855                                 } else if (strcmp(*argv, "-I") == 0) {
 856                                         if (*++argv == NULL)
 857                                                 break;
 858                                         file = *argv++;
 859                                         dir = chdname;
 860                                 } else
 861                                         file = NULL;
 862                                 if (file != NULL) {
 863                                         FILE *fp;
 864                                         char *str;
 865
 866                                         if (strcmp(file, "-") == 0)
 867                                                 fp = stdin;
 868                                         else if ((fp = fopen(file, "r")) == NULL) {
 869                                                 paxwarn(1, "Unable to open file '%s' for read", file);
 870                                                 tar_usage();
 871                                         }
 872                                         while ((str = get_line(fp)) != NULL) {
 873                                                 if (pat_add(str, dir) < 0)
 874                                                         tar_usage();
 875                                                 sawpat = 1;
 876                                         }
 877                                         if (strcmp(file, "-") != 0)
 878                                                 fclose(fp);
 879                                         if (get_line_error) {
 880                                                 paxwarn(1, "Problem with file '%s'", file);
 881                                                 tar_usage();
 882                                         }
 883                                 } else if (strcmp(*argv, "-C") == 0) {
 884                                         if (*++argv == NULL)
 885                                                 break;
 886                                         chdname = *argv++;
 887                                 } else if (pat_add(*argv++, chdname) < 0)
 888                                         tar_usage();
 889                                 else
 890                                         sawpat = 1;
 891                         }
 892                         /*
 893                          * if patterns were added, we are doing chdir()
 894                          * on a file-by-file basis, else, just one
 895                          * global chdir (if any) after opening input.
 896                          */
 897                         if (sawpat > 0)
 898                                 chdname = NULL;
 899                 }
 900                 break;
 901         case ARCHIVE:
 902         case APPND:
 903                 if (chdname != NULL) {  /* initial chdir() */
 904                         if (ftree_add(chdname, 1) < 0)
 905                                 tar_usage();
 906                 }
 907
 908                 while (nincfiles || *argv != NULL) {
 909                         char *file, *dir = NULL;
 910
 911                         /*
 912                          * If we queued up any include files, pull them in
 913                          * now.  Otherwise, check for -I and -C positional
 914                          * flags.  Anything else must be a file to include
 915                          * in the archive.
 916                          */
 917                         if (nincfiles) {
 918                                 file = incfiles->file;
 919                                 dir = incfiles->dir;
 920                                 incfiles++;
 921                                 nincfiles--;
 922                         } else if (strcmp(*argv, "-I") == 0) {
 923                                 if (*++argv == NULL)
 924                                         break;
 925                                 file = *argv++;
 926                                 dir = NULL;
 927                         } else
 928                                 file = NULL;
 929                         if (file != NULL) {
 930                                 FILE *fp;
 931                                 char *str;
 932
 933                                 /* Set directory if needed */
 934                                 if (dir) {
 935                                         if (ftree_add(dir, 1) < 0)
 936                                                 tar_usage();
 937                                 }
 938
 939                                 if (strcmp(file, "-") == 0)
 940                                         fp = stdin;
 941                                 else if ((fp = fopen(file, "r")) == NULL) {
 942                                         paxwarn(1, "Unable to open file '%s' for read", file);
 943                                         tar_usage();
 944                                 }
 945                                 while ((str = get_line(fp)) != NULL) {
 946                                         if (ftree_add(str, 0) < 0)
 947                                                 tar_usage();
 948                                 }
 949                                 if (strcmp(file, "-") != 0)
 950                                         fclose(fp);
 951                                 if (get_line_error) {
 952                                         paxwarn(1, "Problem with file '%s'",
 953                                             file);
 954                                         tar_usage();
 955                                 }
 956                         } else if (strcmp(*argv, "-C") == 0) {
 957                                 if (*++argv == NULL)
 958                                         break;
 959                                 if (ftree_add(*argv++, 1) < 0)
 960                                         tar_usage();
 961                         } else if (ftree_add(*argv++, 0) < 0)
 962                                 tar_usage();
 963                 }
 964                 /*
 965                  * no read errors allowed on updates/append operation!
 966                  */
 967                 maxflt = 0;
 968                 break;
 969         }
 970         if (!fstdin && ((arcname == NULL) || (*arcname == '\0'))) {
 971                 arcname = getenv("TAPE");
 972                 if ((arcname == NULL) || (*arcname == '\0'))
 973                         arcname = _PATH_DEFTAPE;
 974         }
 975 }
 976
 977 static int
 978 mkpath(char *path)
 979 {
 980         struct stat sb;
 981         char *slash;
 982         int done = 0;
 983
 984         slash = path;
 985
 986         while (!done) {
 987                 slash += strspn(slash, "/");
 988                 slash += strcspn(slash, "/");
 989
 990                 done = (*slash == '\0');
 991                 *slash = '\0';
 992
 993                 if (stat(path, &sb)) {
 994                         if (errno != ENOENT || mkdir(path, 0777)) {
 995                                 paxwarn(1, "%s", path);
 996                                 return (-1);
 997                         }
 998                 } else if (!S_ISDIR(sb.st_mode)) {
 999                         syswarn(1, ENOTDIR, "%s", path);
1000                         return (-1);
1001                 }
1002
1003                 if (!done)
1004                         *slash = '/';
1005         }
1006
1007         return (0);
1008 }
1009 /*
1010  * cpio_options()
1011  *      look at the user specified flags. set globals as required and check if
1012  *      the user specified a legal set of flags. If not, complain and exit
1013  */
1014
1015 static void
1016 cpio_options(int argc, char **argv)
1017 {
1018         int c, i;
1019         char *str;
1020         FSUB tmp;
1021         FILE *fp;
1022
1023         kflag = 1;
1024         pids = 1;
1025         pmode = 1;
1026         pmtime = 0;
1027         arcname = NULL;
1028         dflag = 1;
1029         act = -1;
1030         nodirs = 1;
1031         while ((c=getopt(argc,argv,"abcdfiklmoprstuvzABC:E:F:H:I:LO:SZ6")) != -1)
1032                 switch (c) {
1033                         case 'a':
1034                                 /*
1035                                  * preserve access time on files read
1036                                  */
1037                                 tflag = 1;
1038                                 break;
1039                         case 'b':
1040                                 /*
1041                                  * swap bytes and half-words when reading data
1042                                  */
1043                                 break;
1044                         case 'c':
1045                                 /*
1046                                  * ASCII cpio header
1047                                  */
1048                                 frmt = &(fsub[F_ACPIO]);
1049                                 break;
1050                         case 'd':
1051                                 /*
1052                                  * create directories as needed
1053                                  */
1054                                 nodirs = 0;
1055                                 break;
1056                         case 'f':
1057                                 /*
1058                                  * invert meaning of pattern list
1059                                  */
1060                                 cflag = 1;
1061                                 break;
1062                         case 'i':
1063                                 /*
1064                                  * restore an archive
1065                                  */
1066                                 act = EXTRACT;
1067                                 break;
1068                         case 'k':
1069                                 break;
1070                         case 'l':
1071                                 /*
1072                                  * use links instead of copies when possible
1073                                  */
1074                                 lflag = 1;
1075                                 break;
1076                         case 'm':
1077                                 /*
1078                                  * preserve modification time
1079                                  */
1080                                 pmtime = 1;
1081                                 break;
1082                         case 'o':
1083                                 /*
1084                                  * create an archive
1085                                  */
1086                                 act = ARCHIVE;
1087                                 frmt = &(fsub[F_CPIO]);
1088                                 break;
1089                         case 'p':
1090                                 /*
1091                                  * copy-pass mode
1092                                  */
1093                                 act = COPY;
1094                                 break;
1095                         case 'r':
1096                                 /*
1097                                  * interactively rename files
1098                                  */
1099                                 iflag = 1;
1100                                 break;
1101                         case 's':
1102                                 /*
1103                                  * swap bytes after reading data
1104                                  */
1105                                 break;
1106                         case 't':
1107                                 /*
1108                                  * list contents of archive
1109                                  */
1110                                 act = LIST;
1111                                 listf = stdout;
1112                                 break;
1113                         case 'u':
1114                                 /*
1115                                  * replace newer files
1116                                  */
1117                                 kflag = 0;
1118                                 break;
1119                         case 'v':
1120                                 /*
1121                                  * verbose operation mode
1122                                  */
1123                                 vflag = 1;
1124                                 break;
1125                         case 'z':
1126                                 /*
1127                                  * use gzip.  Non standard option.
1128                                  */
1129                                 gzip_program = GZIP_CMD;
1130                                 break;
1131                         case 'A':
1132                                 /*
1133                                  * append mode
1134                                  */
1135                                 act = APPND;
1136                                 break;
1137                         case 'B':
1138                                 /*
1139                                  * Use 5120 byte block size
1140                                  */
1141                                 wrblksz = 5120;
1142                                 break;
1143                         case 'C':
1144                                 /*
1145                                  * set block size in bytes
1146                                  */
1147                                 wrblksz = atoi(optarg);
1148                                 break;
1149                         case 'E':
1150                                 /*
1151                                  * file with patterns to extract or list
1152                                  */
1153                                 if ((fp = fopen(optarg, "r")) == NULL) {
1154                                         paxwarn(1, "Unable to open file '%s' for read", optarg);
1155                                         cpio_usage();
1156                                 }
1157                                 while ((str = get_line(fp)) != NULL) {
1158                                         pat_add(str, NULL);
1159                                 }
1160                                 fclose(fp);
1161                                 if (get_line_error) {
1162                                         paxwarn(1, "Problem with file '%s'", optarg);
1163                                         cpio_usage();
1164                                 }
1165                                 break;
1166                         case 'F':
1167                         case 'I':
1168                         case 'O':
1169                                 /*
1170                                  * filename where the archive is stored
1171                                  */
1172                                 if ((optarg[0] == '-') && (optarg[1]== '\0')) {
1173                                         /*
1174                                          * treat a - as stdin
1175                                          */
1176                                         arcname = NULL;
1177                                         break;
1178                                 }
1179                                 arcname = optarg;
1180                                 break;
1181                         case 'H':
1182                                 /*
1183                                  * specify an archive format on write
1184                                  */
1185                                 tmp.name = optarg;
1186                                 if ((frmt = (FSUB *)bsearch((void *)&tmp, (void *)fsub,
1187                                     sizeof(fsub)/sizeof(FSUB), sizeof(FSUB), c_frmt)) != NULL)
1188                                         break;
1189                                 paxwarn(1, "Unknown -H format: %s", optarg);
1190                                 fputs("cpio: Known -H formats are:", stderr);
1191                                 for (i = 0; i < (sizeof(fsub)/sizeof(FSUB)); ++i)
1192                                         fprintf(stderr, " %s", fsub[i].name);
1193                                 fputs("\n\n", stderr);
1194                                 cpio_usage();
1195                                 break;
1196                         case 'L':
1197                                 /*
1198                                  * follow symbolic links
1199                                  */
1200                                 Lflag = 1;
1201                                 break;
1202                         case 'S':
1203                                 /*
1204                                  * swap halfwords after reading data
1205                                  */
1206                                 break;
1207                         case 'Z':
1208                                 /*
1209                                  * use compress.  Non standard option.
1210                                  */
1211                                 gzip_program = COMPRESS_CMD;
1212                                 break;
1213                         case '6':
1214                                 /*
1215                                  * process Version 6 cpio format
1216                                  */
1217                                 frmt = &(fsub[F_OCPIO]);
1218                                 break;
1219                         case '?':
1220                         default:
1221                                 cpio_usage();
1222                                 break;
1223                 }
1224         argc -= optind;
1225         argv += optind;
1226
1227         /*
1228          * process the args as they are interpreted by the operation mode
1229          */
1230         switch (act) {
1231                 case LIST:
1232                 case EXTRACT:
1233                         while (*argv != NULL)
1234                                 if (pat_add(*argv++, NULL) < 0)
1235                                         cpio_usage();
1236                         break;
1237                 case COPY:
1238                         if (*argv == NULL) {
1239                                 paxwarn(0, "Destination directory was not supplied");
1240                                 cpio_usage();
1241                         }
1242                         dirptr = *argv;
1243                         if (mkpath(dirptr) < 0)
1244                                 cpio_usage();
1245                         --argc;
1246                         ++argv;
1247                         /* FALLTHROUGH */
1248                 case ARCHIVE:
1249                 case APPND:
1250                         if (*argv != NULL)
1251                                 cpio_usage();
1252                         /*
1253                          * no read errors allowed on updates/append operation!
1254                          */
1255                         maxflt = 0;
1256                         while ((str = get_line(stdin)) != NULL) {
1257                                 ftree_add(str, 0);
1258                         }
1259                         if (get_line_error) {
1260                                 paxwarn(1, "Problem while reading stdin");
1261                                 cpio_usage();
1262                         }
1263                         break;
1264                 default:
1265                         cpio_usage();
1266                         break;
1267         }
1268 }
1269
1270 /*
1271  * printflg()
1272  *      print out those invalid flag sets found to the user
1273  */
1274
1275 static void
1276 printflg(unsigned int flg)
1277 {
1278         int nxt;
1279         int pos = 0;
1280
1281         fprintf(stderr,"%s: Invalid combination of options:", argv0);
1282         while ((nxt = ffs(flg)) != 0) {
1283                 flg = flg >> nxt;
1284                 pos += nxt;
1285                 fprintf(stderr, " -%c", flgch[pos-1]);
1286         }
1287         putc('\n', stderr);
1288 }
1289
1290 /*
1291  * c_frmt()
1292  *      comparison routine used by bsearch to find the format specified
1293  *      by the user
1294  */
1295
1296 static int
1297 c_frmt(const void *a, const void *b)
1298 {
1299         return(strcmp(((FSUB *)a)->name, ((FSUB *)b)->name));
1300 }
1301
1302 /*
1303  * opt_next()
1304  *      called by format specific options routines to get each format specific
1305  *      flag and value specified with -o
1306  * Return:
1307  *      pointer to next OPLIST entry or NULL (end of list).
1308  */
1309
1310 OPLIST *
1311 opt_next(void)
1312 {
1313         OPLIST *opt;
1314
1315         if ((opt = ophead) != NULL)
1316                 ophead = ophead->fow;
1317         return(opt);
1318 }
1319
1320 /*
1321  * bad_opt()
1322  *      generic routine used to complain about a format specific options
1323  *      when the format does not support options.
1324  */
1325
1326 int
1327 bad_opt(void)
1328 {
1329         OPLIST *opt;
1330
1331         if (ophead == NULL)
1332                 return(0);
1333         /*
1334          * print all we were given
1335          */
1336         paxwarn(1,"These format options are not supported");
1337         while ((opt = opt_next()) != NULL)
1338                 fprintf(stderr, "\t%s = %s\n", opt->name, opt->value);
1339         pax_usage();
1340         return(0);
1341 }
1342
1343 /*
1344  * opt_add()
1345  *      breaks the value supplied to -o into an option name and value. Options
1346  *      are given to -o in the form -o name-value,name=value
1347  *      multiple -o may be specified.
1348  * Return:
1349  *      0 if format in name=value format, -1 if -o is passed junk.
1350  */
1351
1352 int
1353 opt_add(char *str)
1354 {
1355         OPLIST *opt;
1356         char *frpt;
1357         char *pt;
1358         char *endpt;
1359
1360         if ((str == NULL) || (*str == '\0')) {
1361                 paxwarn(0, "Invalid option name");
1362                 return(-1);
1363         }
1364         if ((str = strdup(str)) == NULL) {
1365                 paxwarn(0, "Unable to allocate space for option list");
1366                 return(-1);
1367         }
1368         frpt = str;
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(str);
1381                         return(-1);
1382                 }
1383                 if ((opt = (OPLIST *)malloc(sizeof(OPLIST))) == NULL) {
1384                         paxwarn(0, "Unable to allocate space for option list");
1385                         free(str);
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         num = strtoq(val, &expr, 0);
1428         if ((num == QUAD_MAX) || (num <= 0) || (expr == val))
1429                 return(0);
1430
1431         switch(*expr) {
1432         case 'b':
1433                 t = num;
1434                 num *= 512;
1435                 if (t > num)
1436                         return(0);
1437                 ++expr;
1438                 break;
1439         case 'k':
1440                 t = num;
1441                 num *= 1024;
1442                 if (t > num)
1443                         return(0);
1444                 ++expr;
1445                 break;
1446         case 'm':
1447                 t = num;
1448                 num *= 1048576;
1449                 if (t > num)
1450                         return(0);
1451                 ++expr;
1452                 break;
1453         case 'w':
1454                 t = num;
1455                 num *= sizeof(int);
1456                 if (t > num)
1457                         return(0);
1458                 ++expr;
1459                 break;
1460         }
1461
1462         switch(*expr) {
1463                 case '\0':
1464                         break;
1465                 case '*':
1466                 case 'x':
1467                         t = num;
1468                         num *= str_offt(expr + 1);
1469                         if (t > num)
1470                                 return(0);
1471                         break;
1472                 default:
1473                         return(0);
1474         }
1475         return(num);
1476 }
1477
1478 char *
1479 get_line(FILE *f)
1480 {
1481         char *name, *temp;
1482         size_t len;
1483
1484         name = fgetln(f, &len);
1485         if (!name) {
1486                 get_line_error = ferror(f) ? GETLINE_FILE_CORRUPT : 0;
1487                 return(0);
1488         }
1489         if (name[len-1] != '\n')
1490                 len++;
1491         temp = malloc(len);
1492         if (!temp) {
1493                 get_line_error = GETLINE_OUT_OF_MEM;
1494                 return(0);
1495         }
1496         memcpy(temp, name, len-1);
1497         temp[len-1] = 0;
1498         return(temp);
1499 }
1500
1501 /*
1502  * no_op()
1503  *      for those option functions where the archive format has nothing to do.
1504  * Return:
1505  *      0
1506  */
1507
1508 static int
1509 no_op(void)
1510 {
1511         return(0);
1512 }
1513
1514 /*
1515  * pax_usage()
1516  *      print the usage summary to the user
1517  */
1518
1519 void
1520 pax_usage(void)
1521 {
1522         fputs("usage: pax [-cdnvz] [-E limit] [-f archive] ", stderr);
1523         fputs("[-s replstr] ... [-U user] ...", stderr);
1524         fputs("\n          [-G group] ... ", stderr);
1525         fputs("[-T [from_date][,to_date]] ... ", stderr);
1526         fputs("[pattern ...]\n", stderr);
1527         fputs("       pax -r [-cdiknuvzDYZ] [-E limit] ", stderr);
1528         fputs("[-f archive] [-o options] ... \n", stderr);
1529         fputs("    [-p string] ... [-s replstr] ... ", stderr);
1530         fputs("[-U user] ... [-G group] ...\n      ", stderr);
1531         fputs("[-T [from_date][,to_date]] ... ", stderr);
1532         fputs(" [pattern ...]\n", stderr);
1533         fputs("       pax -w [-dituvzHLPX] [-b blocksize] ", stderr);
1534         fputs("[ [-a] [-f archive] ] [-x format] \n", stderr);
1535         fputs("    [-B bytes] [-s replstr] ... ", stderr);
1536         fputs("[-o options] ... [-U user] ...", stderr);
1537         fputs("\n          [-G group] ... ", stderr);
1538         fputs("[-T [from_date][,to_date][/[c][m]]] ... ", stderr);
1539         fputs("[file ...]\n", stderr);
1540         fputs("       pax -r -w [-diklntuvDHLPXYZ] ", stderr);
1541         fputs("[-p string] ... [-s replstr] ...", stderr);
1542         fputs("\n          [-U user] ... [-G group] ... ", stderr);
1543         fputs("[-T [from_date][,to_date][/[c][m]]] ... ", stderr);
1544         fputs("\n          [file ...] directory\n", stderr);
1545         exit(1);
1546 }
1547
1548 /*
1549  * tar_usage()
1550  *      print the usage summary to the user
1551  */
1552
1553 void
1554 tar_usage(void)
1555 {
1556         fputs("usage: tar [-]{crtux}[-befhjmopqsvwyzHLOPXZ014578] [blocksize] ",
1557                  stderr);
1558         fputs("[archive] [replstr] [-C directory] [-I file] [file ...]\n",
1559             stderr);
1560         exit(1);
1561 }
1562
1563 /*
1564  * cpio_usage()
1565  *      print the usage summary to the user
1566  */
1567
1568 void
1569 cpio_usage(void)
1570 {
1571         fputs("usage: cpio -o [-aABcLvVzZ] [-C bytes] [-H format] [-O archive]\n", stderr);
1572         fputs("               [-F archive] < name-list [> archive]\n", stderr);
1573         fputs("       cpio -i [-bBcdfmnrsStuvVzZ6] [-C bytes] [-E file] [-H format]\n", stderr);
1574         fputs("               [-I archive] [-F archive] [pattern...] [< archive]\n", stderr);
1575         fputs("       cpio -p [-adlLmuvV] destination-directory < name-list\n", stderr);
1576         exit(1);
1577 }