archival/tar.c

   1 /* vi: set sw=4 ts=4: */
   2 /*
   3  * Mini tar implementation for busybox
   4  *
   5  * Note, that as of BusyBox-0.43, tar has been completely rewritten from the
   6  * ground up.  It still has remnents of the old code lying about, but it is
   7  * very different now (i.e. cleaner, less global variables, etc)
   8  *
   9  * Copyright (C) 2000 by Lineo, inc.
  10  * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
  11  *
  12  * Based in part in the tar implementation in sash
  13  *  Copyright (c) 1999 by David I. Bell
  14  *  Permission is granted to use, distribute, or modify this source,
  15  *  provided that this copyright notice remains intact.
  16  *  Permission to distribute sash derived code under the GPL has been granted.
  17  *
  18  * Based in part on the tar implementation from busybox-0.28
  19  *  Copyright (C) 1995 Bruce Perens
  20  *  This is free software under the GNU General Public License.
  21  *
  22  * This program is free software; you can redistribute it and/or modify
  23  * it under the terms of the GNU General Public License as published by
  24  * the Free Software Foundation; either version 2 of the License, or
  25  * (at your option) any later version.
  26  *
  27  * This program is distributed in the hope that it will be useful,
  28  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  29  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  30  * General Public License for more details.
  31  *
  32  * You should have received a copy of the GNU General Public License
  33  * along with this program; if not, write to the Free Software
  34  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  35  *
  36  */
  37
  38
  39 #include "busybox.h"
  40 #define BB_DECLARE_EXTERN
  41 #define bb_need_io_error
  42 #define bb_need_name_longer_than_foo
  43 #include "messages.c"
  44 #include <stdio.h>
  45 #include <dirent.h>
  46 #include <errno.h>
  47 #include <fcntl.h>
  48 #include <signal.h>
  49 #include <time.h>
  50 #include <utime.h>
  51 #include <sys/types.h>
  52 #include <sys/sysmacros.h>
  53 #include <getopt.h>
  54
  55 #ifdef BB_FEATURE_TAR_GZIP
  56 extern int unzip(int in, int out);
  57 extern int gunzip_init();
  58 #endif
  59
  60 /* Tar file constants  */
  61 #ifndef MAJOR
  62 #define MAJOR(dev) (((dev)>>8)&0xff)
  63 #define MINOR(dev) ((dev)&0xff)
  64 #endif
  65
  66 #define NAME_SIZE       100
  67
  68 /* POSIX tar Header Block, from POSIX 1003.1-1990  */
  69 struct TarHeader
  70 {
  71                                 /* byte offset */
  72         char name[NAME_SIZE];         /*   0-99 */
  73         char mode[8];                 /* 100-107 */
  74         char uid[8];                  /* 108-115 */
  75         char gid[8];                  /* 116-123 */
  76         char size[12];                /* 124-135 */
  77         char mtime[12];               /* 136-147 */
  78         char chksum[8];               /* 148-155 */
  79         char typeflag;                /* 156-156 */
  80         char linkname[NAME_SIZE];     /* 157-256 */
  81         char magic[6];                /* 257-262 */
  82         char version[2];              /* 263-264 */
  83         char uname[32];               /* 265-296 */
  84         char gname[32];               /* 297-328 */
  85         char devmajor[8];             /* 329-336 */
  86         char devminor[8];             /* 337-344 */
  87         char prefix[155];             /* 345-499 */
  88         char padding[12];             /* 500-512 (pad to exactly the TAR_BLOCK_SIZE) */
  89 };
  90 typedef struct TarHeader TarHeader;
  91
  92
  93 /* A few useful constants */
  94 #define TAR_MAGIC          "ustar"        /* ustar and a null */
  95 #define TAR_VERSION        "  "           /* Be compatable with GNU tar format */
  96 #define TAR_MAGIC_LEN       6
  97 #define TAR_VERSION_LEN     2
  98 #define TAR_BLOCK_SIZE      512
  99
 100 /* A nice enum with all the possible tar file content types */
 101 enum TarFileType
 102 {
 103         REGTYPE  = '0',            /* regular file */
 104         REGTYPE0 = '\0',           /* regular file (ancient bug compat)*/
 105         LNKTYPE  = '1',            /* hard link */
 106         SYMTYPE  = '2',            /* symbolic link */
 107         CHRTYPE  = '3',            /* character special */
 108         BLKTYPE  = '4',            /* block special */
 109         DIRTYPE  = '5',            /* directory */
 110         FIFOTYPE = '6',            /* FIFO special */
 111         CONTTYPE = '7',            /* reserved */
 112         GNULONGLINK = 'K',         /* GNU long (>100 chars) link name */
 113         GNULONGNAME = 'L',         /* GNU long (>100 chars) file name */
 114 };
 115 typedef enum TarFileType TarFileType;
 116
 117 /* This struct ignores magic, non-numeric user name,
 118  * non-numeric group name, and the checksum, since
 119  * these are all ignored by BusyBox tar. */
 120 struct TarInfo
 121 {
 122         int              tarFd;          /* An open file descriptor for reading from the tarball */
 123         char *           name;           /* File name */
 124         mode_t           mode;           /* Unix mode, including device bits. */
 125         uid_t            uid;            /* Numeric UID */
 126         gid_t            gid;            /* Numeric GID */
 127         size_t           size;           /* Size of file */
 128         time_t           mtime;          /* Last-modified time */
 129         enum TarFileType type;           /* Regular, directory, link, etc */
 130         char *           linkname;       /* Name for symbolic and hard links */
 131         long             devmajor;       /* Major number for special device */
 132         long             devminor;       /* Minor number for special device */
 133 };
 134 typedef struct TarInfo TarInfo;
 135
 136 /* Local procedures to restore files from a tar file.  */
 137 static int readTarFile(int tarFd, int extractFlag, int listFlag,
 138                 int tostdoutFlag, int verboseFlag, char** extractList,
 139                 char** excludeList);
 140
 141 #ifdef BB_FEATURE_TAR_CREATE
 142 /* Local procedures to save files into a tar file.  */
 143 static int writeTarFile(const char* tarName, int verboseFlag, char **argv,
 144                 char** excludeList);
 145 #endif
 146
 147 #ifdef BB_FEATURE_TAR_GZIP
 148 /* Signal handler for when child gzip process dies...  */
 149 void child_died()
 150 {
 151         fflush(stdout);
 152         fflush(stderr);
 153         exit(EXIT_FAILURE);
 154 }
 155
 156 static int tar_unzip_init(int tarFd)
 157 {
 158         int child_pid;
 159         static int unzip_pipe[2];
 160         /* Cope if child dies... Otherwise we block forever in read()... */
 161         signal(SIGCHLD, child_died);
 162
 163         if (pipe(unzip_pipe)!=0)
 164                 error_msg_and_die("pipe error\n");
 165
 166         if ( (child_pid = fork()) == -1)
 167                 error_msg_and_die("fork failure\n");
 168
 169         if (child_pid==0) {
 170                 /* child process */
 171                 gunzip_init();
 172                 unzip(tarFd, unzip_pipe[1]);
 173                 exit(EXIT_SUCCESS);
 174         }
 175         else
 176                 /* return fd of uncompressed data to parent process */
 177                 return(unzip_pipe[0]);
 178 }
 179 #endif
 180
 181 extern int tar_main(int argc, char **argv)
 182 {
 183         char** excludeList=NULL;
 184         char** extractList=NULL;
 185         const char *tarName="-";
 186 #if defined BB_FEATURE_TAR_EXCLUDE
 187         int excludeListSize=0;
 188         char *excludeFileName ="-";
 189         FILE *fileList;
 190         char file[256];
 191 #endif
 192 #if defined BB_FEATURE_TAR_GZIP
 193         int unzipFlag    = FALSE;
 194 #endif
 195         int listFlag     = FALSE;
 196         int extractFlag  = FALSE;
 197         int createFlag   = FALSE;
 198         int verboseFlag  = FALSE;
 199         int tostdoutFlag = FALSE;
 200         int status       = FALSE;
 201         int firstOpt     = TRUE;
 202         int stopIt;
 203
 204         if (argc <= 1)
 205                 usage(tar_usage);
 206
 207         while (*(++argv) && (**argv == '-' || firstOpt == TRUE)) {
 208                 firstOpt=FALSE;
 209                 stopIt=FALSE;
 210                 while (stopIt==FALSE && **argv) {
 211                         switch (*((*argv)++)) {
 212                                 case 'c':
 213                                         if (extractFlag == TRUE || listFlag == TRUE)
 214                                                 goto flagError;
 215                                         createFlag = TRUE;
 216                                         break;
 217                                 case 'x':
 218                                         if (listFlag == TRUE || createFlag == TRUE)
 219                                                 goto flagError;
 220                                         extractFlag = TRUE;
 221                                         break;
 222                                 case 't':
 223                                         if (extractFlag == TRUE || createFlag == TRUE)
 224                                                 goto flagError;
 225                                         listFlag = TRUE;
 226                                         break;
 227 #ifdef BB_FEATURE_TAR_GZIP
 228                                 case 'z':
 229                                         unzipFlag = TRUE;
 230                                         break;
 231 #endif
 232                                 case 'v':
 233                                         verboseFlag = TRUE;
 234                                         break;
 235                                 case 'O':
 236                                         tostdoutFlag = TRUE;
 237                                         break;
 238                                 case 'f':
 239                                         if (*tarName != '-')
 240                                                 error_msg_and_die( "Only one 'f' option allowed\n");
 241                                         tarName = *(++argv);
 242                                         if (tarName == NULL)
 243                                                 error_msg_and_die( "Option requires an argument: No file specified\n");
 244                                         stopIt=TRUE;
 245                                         break;
 246 #if defined BB_FEATURE_TAR_EXCLUDE
 247                                 case 'e':
 248                                         if (strcmp(*argv, "xclude")==0) {
 249                                                 excludeList=xrealloc( excludeList,
 250                                                                 sizeof(char *) * (excludeListSize+2));
 251                                                 excludeList[excludeListSize] = *(++argv);
 252                                                 if (excludeList[excludeListSize] == NULL)
 253                                                         error_msg_and_die( "Option requires an argument: No file specified\n");
 254                                                 /* Remove leading "/"s */
 255                                                 while (*excludeList[excludeListSize] =='/')
 256                                                         excludeList[excludeListSize]++;
 257                                                 /* Tack a NULL onto the end of the list */
 258                                                 excludeList[++excludeListSize] = NULL;
 259                                                 stopIt=TRUE;
 260                                                 break;
 261                                         }
 262                                 case 'X':
 263                                         if (*excludeFileName != '-')
 264                                                 error_msg_and_die("Only one 'X' option allowed\n");
 265                                         excludeFileName = *(++argv);
 266                                         if (excludeFileName == NULL)
 267                                                 error_msg_and_die("Option requires an argument: No file specified\n");
 268                                         fileList = fopen (excludeFileName, "r");
 269                                         if (! fileList)
 270                                                 error_msg_and_die("Exclude file: file not found\n");
 271                                         while (fgets(file, sizeof(file), fileList) != NULL) {
 272                                                 excludeList = xrealloc(excludeList,
 273                                                                 sizeof(char *) * (excludeListSize+2));
 274                                                 if (file[strlen(file)-1] == '\n')
 275                                                         file[strlen(file)-1] = '\0';
 276                                                 excludeList[excludeListSize] = xstrdup(file);
 277                                                 /* Remove leading "/"s */
 278                                                 while (*excludeList[excludeListSize] == '/')
 279                                                         excludeList[excludeListSize]++;
 280                                                 /* Tack a NULL onto the end of the list */
 281                                                 excludeList[++excludeListSize] = NULL;
 282                                         }
 283                                         fclose(fileList);
 284                                         stopIt=TRUE;
 285                                         break;
 286 #endif
 287                                 case '-':
 288                                                 break;
 289                                 default:
 290                                         usage(tar_usage);
 291                         }
 292                 }
 293         }
 294
 295         /*
 296          * Do the correct type of action supplying the rest of the
 297          * command line arguments as the list of files to process.
 298          */
 299         if (createFlag == TRUE) {
 300 #ifndef BB_FEATURE_TAR_CREATE
 301                 error_msg_and_die( "This version of tar was not compiled with tar creation support.\n");
 302 #else
 303 #ifdef BB_FEATURE_TAR_GZIP
 304                 if (unzipFlag==TRUE)
 305                         error_msg_and_die("Creation of compressed not internally support by tar, pipe to busybox gunzip\n");
 306 #endif
 307                 status = writeTarFile(tarName, verboseFlag, argv, excludeList);
 308 #endif
 309         }
 310         if (listFlag == TRUE || extractFlag == TRUE) {
 311                 int tarFd;
 312                 if (*argv)
 313                         extractList = argv;
 314                 /* Open the tar file for reading.  */
 315                 if (!strcmp(tarName, "-"))
 316                         tarFd = fileno(stdin);
 317                 else
 318                         tarFd = open(tarName, O_RDONLY);
 319                 if (tarFd < 0)
 320                         perror_msg_and_die("Error opening '%s'", tarName);
 321
 322 #ifdef BB_FEATURE_TAR_GZIP
 323                 /* unzip tarFd in a seperate process */
 324                 if (unzipFlag == TRUE)
 325                         tarFd = tar_unzip_init(tarFd);
 326 #endif
 327                 status = readTarFile(tarFd, extractFlag, listFlag, tostdoutFlag,
 328                                         verboseFlag, extractList, excludeList);
 329         }
 330
 331         if (status == TRUE)
 332                 return EXIT_SUCCESS;
 333         else
 334                 return EXIT_FAILURE;
 335
 336   flagError:
 337         error_msg_and_die( "Exactly one of 'c', 'x' or 't' must be specified\n");
 338 }
 339
 340 static void
 341 fixUpPermissions(TarInfo *header)
 342 {
 343         struct utimbuf t;
 344         /* Now set permissions etc for the new file */
 345         chown(header->name, header->uid, header->gid);
 346         chmod(header->name, header->mode);
 347         /* Reset the time */
 348         t.actime = time(0);
 349         t.modtime = header->mtime;
 350         utime(header->name, &t);
 351 }
 352
 353 static int
 354 tarExtractRegularFile(TarInfo *header, int extractFlag, int tostdoutFlag)
 355 {
 356         size_t  writeSize;
 357         size_t  readSize;
 358         size_t  actualWriteSz;
 359         char    buffer[BUFSIZ];
 360         size_t  size = header->size;
 361         int outFd=fileno(stdout);
 362
 363         /* Open the file to be written, if a file is supposed to be written */
 364         if (extractFlag==TRUE && tostdoutFlag==FALSE) {
 365                 /* Create the path to the file, just in case it isn't there...
 366                  * This should not screw up path permissions or anything. */
 367                 create_path(header->name, 0777);
 368                 if ((outFd=open(header->name, O_CREAT|O_TRUNC|O_WRONLY,
 369                                                 header->mode & ~S_IFMT)) < 0) {
 370                         error_msg(io_error, header->name, strerror(errno));
 371                         return( FALSE);
 372                 }
 373         }
 374
 375         /* Write out the file, if we are supposed to be doing that */
 376         while ( size > 0 ) {
 377                 actualWriteSz=0;
 378                 if ( size > sizeof(buffer) )
 379                         writeSize = readSize = sizeof(buffer);
 380                 else {
 381                         int mod = size % 512;
 382                         if ( mod != 0 )
 383                                 readSize = size + (512 - mod);
 384                         else
 385                                 readSize = size;
 386                         writeSize = size;
 387                 }
 388                 if ( (readSize = full_read(header->tarFd, buffer, readSize)) <= 0 ) {
 389                         /* Tarball seems to have a problem */
 390                         error_msg("Unexpected EOF in archive\n");
 391                         return( FALSE);
 392                 }
 393                 if ( readSize < writeSize )
 394                         writeSize = readSize;
 395
 396                 /* Write out the file, if we are supposed to be doing that */
 397                 if (extractFlag==TRUE) {
 398
 399                         if ((actualWriteSz=full_write(outFd, buffer, writeSize)) != writeSize ) {
 400                                 /* Output file seems to have a problem */
 401                                 error_msg(io_error, header->name, strerror(errno));
 402                                 return( FALSE);
 403                         }
 404                 } else {
 405                         actualWriteSz=writeSize;
 406                 }
 407
 408                 size -= actualWriteSz;
 409         }
 410
 411         /* Now we are done writing the file out, so try
 412          * and fix up the permissions and whatnot */
 413         if (extractFlag==TRUE && tostdoutFlag==FALSE) {
 414                 close(outFd);
 415                 fixUpPermissions(header);
 416         }
 417         return( TRUE);
 418 }
 419
 420 static int
 421 tarExtractDirectory(TarInfo *header, int extractFlag, int tostdoutFlag)
 422 {
 423
 424         if (extractFlag==FALSE || tostdoutFlag==TRUE)
 425                 return( TRUE);
 426
 427         if (create_path(header->name, header->mode) != TRUE) {
 428                 perror_msg("%s: Cannot mkdir", header->name);
 429                 return( FALSE);
 430         }
 431         /* make the final component, just in case it was
 432          * omitted by create_path() (which will skip the
 433          * directory if it doesn't have a terminating '/') */
 434         if (mkdir(header->name, header->mode) == 0) {
 435                 fixUpPermissions(header);
 436         }
 437         return( TRUE);
 438 }
 439
 440 static int
 441 tarExtractHardLink(TarInfo *header, int extractFlag, int tostdoutFlag)
 442 {
 443         if (extractFlag==FALSE || tostdoutFlag==TRUE)
 444                 return( TRUE);
 445
 446         if (link(header->linkname, header->name) < 0) {
 447                 perror_msg("%s: Cannot create hard link to '%s'", header->name,
 448                                 header->linkname);
 449                 return( FALSE);
 450         }
 451
 452         /* Now set permissions etc for the new directory */
 453         fixUpPermissions(header);
 454         return( TRUE);
 455 }
 456
 457 static int
 458 tarExtractSymLink(TarInfo *header, int extractFlag, int tostdoutFlag)
 459 {
 460         if (extractFlag==FALSE || tostdoutFlag==TRUE)
 461                 return( TRUE);
 462
 463 #ifdef  S_ISLNK
 464         if (symlink(header->linkname, header->name) < 0) {
 465                 perror_msg("%s: Cannot create symlink to '%s'", header->name,
 466                                 header->linkname);
 467                 return( FALSE);
 468         }
 469         /* Try to change ownership of the symlink.
 470          * If libs doesn't support that, don't bother.
 471          * Changing the pointed-to-file is the Wrong Thing(tm).
 472          */
 473 #if (__GLIBC__ >= 2) && (__GLIBC_MINOR__ >= 1)
 474         lchown(header->name, header->uid, header->gid);
 475 #endif
 476
 477         /* Do not change permissions or date on symlink,
 478          * since it changes the pointed to file instead.  duh. */
 479 #else
 480         error_msg("%s: Cannot create symlink to '%s': %s\n",
 481                         header->name, header->linkname,
 482                         "symlinks not supported");
 483 #endif
 484         return( TRUE);
 485 }
 486
 487 static int
 488 tarExtractSpecial(TarInfo *header, int extractFlag, int tostdoutFlag)
 489 {
 490         if (extractFlag==FALSE || tostdoutFlag==TRUE)
 491                 return( TRUE);
 492
 493         if (S_ISCHR(header->mode) || S_ISBLK(header->mode) || S_ISSOCK(header->mode)) {
 494                 if (mknod(header->name, header->mode, makedev(header->devmajor, header->devminor)) < 0) {
 495                         perror_msg("%s: Cannot mknod", header->name);
 496                         return( FALSE);
 497                 }
 498         } else if (S_ISFIFO(header->mode)) {
 499                 if (mkfifo(header->name, header->mode) < 0) {
 500                         perror_msg("%s: Cannot mkfifo", header->name);
 501                         return( FALSE);
 502                 }
 503         }
 504
 505         /* Now set permissions etc for the new directory */
 506         fixUpPermissions(header);
 507         return( TRUE);
 508 }
 509
 510 /* Read an octal value in a field of the specified width, with optional
 511  * spaces on both sides of the number and with an optional null character
 512  * at the end.  Returns -1 on an illegal format.  */
 513 static long getOctal(const char *cp, int size)
 514 {
 515         long val = 0;
 516
 517         for(;(size > 0) && (*cp == ' '); cp++, size--);
 518         if ((size == 0) || !is_octal(*cp))
 519                 return -1;
 520         for(; (size > 0) && is_octal(*cp); size--) {
 521                 val = val * 8 + *cp++ - '0';
 522         }
 523         for (;(size > 0) && (*cp == ' '); cp++, size--);
 524         if ((size > 0) && *cp)
 525                 return -1;
 526         return val;
 527 }
 528
 529
 530 /* Parse the tar header and fill in the nice struct with the details */
 531 static int
 532 readTarHeader(struct TarHeader *rawHeader, struct TarInfo *header)
 533 {
 534         int i;
 535         long chksum, sum=0;
 536         unsigned char *s = (unsigned char *)rawHeader;
 537
 538         header->name  = rawHeader->name;
 539         /* Check for and relativify any absolute paths */
 540         if ( *(header->name) == '/' ) {
 541                 static int alreadyWarned=FALSE;
 542
 543                 while (*(header->name) == '/')
 544                         ++*(header->name);
 545
 546                 if (alreadyWarned == FALSE) {
 547                         error_msg("Removing leading '/' from member names\n");
 548                         alreadyWarned = TRUE;
 549                 }
 550         }
 551
 552         header->mode  = getOctal(rawHeader->mode, sizeof(rawHeader->mode));
 553         header->uid   =  getOctal(rawHeader->uid, sizeof(rawHeader->uid));
 554         header->gid   =  getOctal(rawHeader->gid, sizeof(rawHeader->gid));
 555         header->size  = getOctal(rawHeader->size, sizeof(rawHeader->size));
 556         header->mtime = getOctal(rawHeader->mtime, sizeof(rawHeader->mtime));
 557         chksum = getOctal(rawHeader->chksum, sizeof(rawHeader->chksum));
 558         header->type  = rawHeader->typeflag;
 559         header->linkname  = rawHeader->linkname;
 560         header->devmajor  = getOctal(rawHeader->devmajor, sizeof(rawHeader->devmajor));
 561         header->devminor  = getOctal(rawHeader->devminor, sizeof(rawHeader->devminor));
 562
 563         /* Check the checksum */
 564         for (i = sizeof(*rawHeader); i-- != 0;) {
 565                 sum += *s++;
 566         }
 567         /* Remove the effects of the checksum field (replace
 568          * with blanks for the purposes of the checksum) */
 569         s = rawHeader->chksum;
 570         for (i = sizeof(rawHeader->chksum) ; i-- != 0;) {
 571                 sum -= *s++;
 572         }
 573         sum += ' ' * sizeof(rawHeader->chksum);
 574         if (sum == chksum )
 575                 return ( TRUE);
 576         return( FALSE);
 577 }
 578
 579
 580 /*
 581  * Read a tar file and extract or list the specified files within it.
 582  * If the list is empty than all files are extracted or listed.
 583  */
 584 extern int readTarFile(int tarFd, int extractFlag, int listFlag,
 585                 int tostdoutFlag, int verboseFlag, char** extractList,
 586                 char** excludeList)
 587 {
 588         int status;
 589         int errorFlag=FALSE;
 590         int skipNextHeaderFlag=FALSE;
 591         TarHeader rawHeader;
 592         TarInfo header;
 593         char** tmpList;
 594
 595         /* Set the umask for this process so it doesn't
 596          * screw up permission setting for us later. */
 597         umask(0);
 598
 599         /* Read the tar file, and iterate over it one file at a time */
 600         while ( (status = full_read(tarFd, (char*)&rawHeader, TAR_BLOCK_SIZE)) == TAR_BLOCK_SIZE ) {
 601
 602                 /* Try to read the header */
 603                 if ( readTarHeader(&rawHeader, &header) == FALSE ) {
 604                         if ( *(header.name) == '\0' ) {
 605                                 goto endgame;
 606                         } else {
 607                                 errorFlag=TRUE;
 608                                 error_msg("Bad tar header, skipping\n");
 609                                 continue;
 610                         }
 611                 }
 612                 if ( *(header.name) == '\0' )
 613                                 goto endgame;
 614                 header.tarFd = tarFd;
 615
 616                 /* Skip funky extra GNU headers that precede long files */
 617                 if ( (header.type == GNULONGNAME) || (header.type == GNULONGLINK) ) {
 618                         skipNextHeaderFlag=TRUE;
 619                         if (tarExtractRegularFile(&header, FALSE, FALSE) == FALSE)
 620                                 errorFlag = TRUE;
 621                         continue;
 622                 }
 623                 if ( skipNextHeaderFlag == TRUE ) {
 624                         skipNextHeaderFlag=FALSE;
 625                         error_msg(name_longer_than_foo, NAME_SIZE);
 626                         if (tarExtractRegularFile(&header, FALSE, FALSE) == FALSE)
 627                                 errorFlag = TRUE;
 628                         continue;
 629                 }
 630
 631 #if defined BB_FEATURE_TAR_EXCLUDE
 632                 {
 633                         int skipFlag=FALSE;
 634                         /* Check for excluded files....  */
 635                         for (tmpList=excludeList; tmpList && *tmpList; tmpList++) {
 636                                 /* Do some extra hoop jumping for when directory names
 637                                  * end in '/' but the entry in tmpList doesn't */
 638                                 if (strncmp( *tmpList, header.name, strlen(*tmpList))==0 || (
 639                                                         header.name[strlen(header.name)-1]=='/'
 640                                                         && strncmp( *tmpList, header.name,
 641                                                                 MIN(strlen(header.name)-1, strlen(*tmpList)))==0)) {
 642                                         /* If it is a regular file, pretend to extract it with
 643                                          * the extractFlag set to FALSE, so the junk in the tarball
 644                                          * is properly skipped over */
 645                                         if ( header.type==REGTYPE || header.type==REGTYPE0 ) {
 646                                                 if (tarExtractRegularFile(&header, FALSE, FALSE) == FALSE)
 647                                                         errorFlag = TRUE;
 648                                         }
 649                                         skipFlag=TRUE;
 650                                         break;
 651                                 }
 652                         }
 653                         /* There are not the droids you're looking for, move along */
 654                         if (skipFlag==TRUE)
 655                                 continue;
 656                 }
 657 #endif
 658                 if (extractList != NULL) {
 659                         int skipFlag = TRUE;
 660                         for (tmpList = extractList; *tmpList != NULL; tmpList++) {
 661                                 if (strncmp( *tmpList, header.name, strlen(*tmpList))==0 || (
 662                                                         header.name[strlen(header.name)-1]=='/'
 663                                                         && strncmp( *tmpList, header.name,
 664                                                                 MIN(strlen(header.name)-1, strlen(*tmpList)))==0)) {
 665                                         /* If it is a regular file, pretend to extract it with
 666                                          * the extractFlag set to FALSE, so the junk in the tarball
 667                                          * is properly skipped over */
 668                                         skipFlag = FALSE;
 669                                         memmove(extractList+1, extractList,
 670                                                                 sizeof(*extractList)*(tmpList-extractList));
 671                                         extractList++;
 672                                         break;
 673                                 }
 674                         }
 675                         /* There are not the droids you're looking for, move along */
 676                         if (skipFlag == TRUE) {
 677                                 if ( header.type==REGTYPE || header.type==REGTYPE0 )
 678                                         if (tarExtractRegularFile(&header, FALSE, FALSE) == FALSE)
 679                                                 errorFlag = TRUE;
 680                                 continue;
 681                         }
 682                 }
 683
 684                 if (listFlag == TRUE) {
 685                         /* Special treatment if the list (-t) flag is on */
 686                         if (verboseFlag == TRUE) {
 687                                 int len, len1;
 688                                 char buf[35];
 689                                 struct tm *tm = localtime (&(header.mtime));
 690
 691                                 len=printf("%s ", mode_string(header.mode));
 692                                 my_getpwuid(buf, header.uid);
 693                                 if (! *buf)
 694                                         len+=printf("%d", header.uid);
 695                                 else
 696                                         len+=printf("%s", buf);
 697                                 my_getgrgid(buf, header.gid);
 698                                 if (! *buf)
 699                                         len+=printf("/%-d ", header.gid);
 700                                 else
 701                                         len+=printf("/%-s ", buf);
 702
 703                                 if (header.type==CHRTYPE || header.type==BLKTYPE) {
 704                                         len1=snprintf(buf, sizeof(buf), "%ld,%-ld ",
 705                                                         header.devmajor, header.devminor);
 706                                 } else {
 707                                         len1=snprintf(buf, sizeof(buf), "%lu ", (long)header.size);
 708                                 }
 709                                 /* Jump through some hoops to make the columns match up */
 710                                 for(;(len+len1)<31;len++)
 711                                         printf(" ");
 712                                 printf(buf);
 713
 714                                 /* Use ISO 8610 time format */
 715                                 if (tm) {
 716                                         printf ("%04d-%02d-%02d %02d:%02d:%02d ",
 717                                                         tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
 718                                                         tm->tm_hour, tm->tm_min, tm->tm_sec);
 719                                 }
 720                         }
 721                         printf("%s", header.name);
 722                         if (verboseFlag == TRUE) {
 723                                 if (header.type==LNKTYPE)       /* If this is a link, say so */
 724                                         printf(" link to %s", header.linkname);
 725                                 else if (header.type==SYMTYPE)
 726                                         printf(" -> %s", header.linkname);
 727                         }
 728                         printf("\n");
 729                 }
 730
 731                 /* List contents if we are supposed to do that */
 732                 if (verboseFlag == TRUE && extractFlag == TRUE) {
 733                         /* Now the normal listing */
 734                         FILE *vbFd = stdout;
 735                         if (tostdoutFlag == TRUE)       // If the archive goes to stdout, verbose to stderr
 736                                 vbFd = stderr;
 737                         fprintf(vbFd, "%s\n", header.name);
 738                 }
 739
 740                 /* Remove files if we would overwrite them */
 741                 if (extractFlag == TRUE && tostdoutFlag == FALSE)
 742                         unlink(header.name);
 743
 744                 /* If we got here, we can be certain we have a legitimate
 745                  * header to work with.  So work with it.  */
 746                 switch ( header.type ) {
 747                         case REGTYPE:
 748                         case REGTYPE0:
 749                                 /* If the name ends in a '/' then assume it is
 750                                  * supposed to be a directory, and fall through */
 751                                 if (header.name[strlen(header.name)-1] != '/') {
 752                                         if (tarExtractRegularFile(&header, extractFlag, tostdoutFlag)==FALSE)
 753                                                 errorFlag=TRUE;
 754                                         break;
 755                                 }
 756                         case DIRTYPE:
 757                                 if (tarExtractDirectory( &header, extractFlag, tostdoutFlag)==FALSE)
 758                                         errorFlag=TRUE;
 759                                 break;
 760                         case LNKTYPE:
 761                                 if (tarExtractHardLink( &header, extractFlag, tostdoutFlag)==FALSE)
 762                                         errorFlag=TRUE;
 763                                 break;
 764                         case SYMTYPE:
 765                                 if (tarExtractSymLink( &header, extractFlag, tostdoutFlag)==FALSE)
 766                                         errorFlag=TRUE;
 767                                 break;
 768                         case CHRTYPE:
 769                         case BLKTYPE:
 770                         case FIFOTYPE:
 771                                 if (tarExtractSpecial( &header, extractFlag, tostdoutFlag)==FALSE)
 772                                         errorFlag=TRUE;
 773                                 break;
 774 #if 0
 775                         /* Handled earlier */
 776                         case GNULONGNAME:
 777                         case GNULONGLINK:
 778                                 skipNextHeaderFlag=TRUE;
 779                                 break;
 780 #endif
 781                         default:
 782                                 error_msg("Unknown file type '%c' in tar file\n", header.type);
 783                                 close( tarFd);
 784                                 return( FALSE);
 785                 }
 786         }
 787         close(tarFd);
 788         if (status > 0) {
 789                 /* Bummer - we read a partial header */
 790                 perror_msg("Error reading tar file");
 791                 return ( FALSE);
 792         }
 793         else if (errorFlag==TRUE) {
 794                 error_msg( "Error exit delayed from previous errors\n");
 795                 return( FALSE);
 796         } else
 797                 return( status);
 798
 799         /* Stuff to do when we are done */
 800 endgame:
 801         close( tarFd);
 802         if (extractList != NULL) {
 803                 for (; *extractList != NULL; extractList++) {
 804                         error_msg("%s: Not found in archive\n", *extractList);
 805                         errorFlag = TRUE;
 806                 }
 807         }
 808         if ( *(header.name) == '\0' ) {
 809                 if (errorFlag==TRUE)
 810                         error_msg( "Error exit delayed from previous errors\n");
 811                 else
 812                         return( TRUE);
 813         }
 814         return( FALSE);
 815 }
 816
 817
 818 #ifdef BB_FEATURE_TAR_CREATE
 819
 820 /*
 821 ** writeTarFile(),  writeFileToTarball(), and writeTarHeader() are
 822 ** the only functions that deal with the HardLinkInfo structure.
 823 ** Even these functions use the xxxHardLinkInfo() functions.
 824 */
 825 typedef struct HardLinkInfo HardLinkInfo;
 826 struct HardLinkInfo
 827 {
 828         HardLinkInfo *next;           /* Next entry in list */
 829         dev_t dev;                    /* Device number */
 830         ino_t ino;                    /* Inode number */
 831         short linkCount;              /* (Hard) Link Count */
 832         char name[1];                 /* Start of filename (must be last) */
 833 };
 834
 835 /* Some info to be carried along when creating a new tarball */
 836 struct TarBallInfo
 837 {
 838         char* fileName;               /* File name of the tarball */
 839         int tarFd;                    /* Open-for-write file descriptor
 840                                                                          for the tarball */
 841         struct stat statBuf;          /* Stat info for the tarball, letting
 842                                                                          us know the inode and device that the
 843                                                                          tarball lives, so we can avoid trying
 844                                                                          to include the tarball into itself */
 845         int verboseFlag;              /* Whether to print extra stuff or not */
 846         char** excludeList;           /* List of files to not include */
 847         HardLinkInfo *hlInfoHead;     /* Hard Link Tracking Information */
 848         HardLinkInfo *hlInfo;         /* Hard Link Info for the current file */
 849 };
 850 typedef struct TarBallInfo TarBallInfo;
 851
 852
 853 /* Might be faster (and bigger) if the dev/ino were stored in numeric order;) */
 854 static void
 855 addHardLinkInfo (HardLinkInfo **hlInfoHeadPtr, dev_t dev, ino_t ino,
 856                 short linkCount, const char *name)
 857 {
 858         /* Note: hlInfoHeadPtr can never be NULL! */
 859         HardLinkInfo *hlInfo;
 860
 861         hlInfo = (HardLinkInfo *)xmalloc(sizeof(HardLinkInfo)+strlen(name)+1);
 862         if (hlInfo) {
 863                 hlInfo->next = *hlInfoHeadPtr;
 864                 *hlInfoHeadPtr = hlInfo;
 865                 hlInfo->dev = dev;
 866                 hlInfo->ino = ino;
 867                 hlInfo->linkCount = linkCount;
 868                 strcpy(hlInfo->name, name);
 869         }
 870         return;
 871 }
 872
 873 static void
 874 freeHardLinkInfo (HardLinkInfo **hlInfoHeadPtr)
 875 {
 876         HardLinkInfo *hlInfo = NULL;
 877         HardLinkInfo *hlInfoNext = NULL;
 878
 879         if (hlInfoHeadPtr) {
 880                 hlInfo = *hlInfoHeadPtr;
 881                 while (hlInfo) {
 882                         hlInfoNext = hlInfo->next;
 883                         free(hlInfo);
 884                         hlInfo = hlInfoNext;
 885                 }
 886                 *hlInfoHeadPtr = NULL;
 887         }
 888         return;
 889 }
 890
 891 /* Might be faster (and bigger) if the dev/ino were stored in numeric order;) */
 892 static HardLinkInfo *
 893 findHardLinkInfo (HardLinkInfo *hlInfo, dev_t dev, ino_t ino)
 894 {
 895         while(hlInfo) {
 896                 if ((ino == hlInfo->ino) && (dev == hlInfo->dev))
 897                         break;
 898                 hlInfo = hlInfo->next;
 899         }
 900         return(hlInfo);
 901 }
 902
 903 /* Put an octal string into the specified buffer.
 904  * The number is zero and space padded and possibly null padded.
 905  * Returns TRUE if successful.  */
 906 static int putOctal (char *cp, int len, long value)
 907 {
 908         int tempLength;
 909         char tempBuffer[32];
 910         char *tempString = tempBuffer;
 911
 912         /* Create a string of the specified length with an initial space,
 913          * leading zeroes and the octal number, and a trailing null.  */
 914         sprintf (tempString, "%0*lo", len - 1, value);
 915
 916         /* If the string is too large, suppress the leading space.  */
 917         tempLength = strlen (tempString) + 1;
 918         if (tempLength > len) {
 919                 tempLength--;
 920                 tempString++;
 921         }
 922
 923         /* If the string is still too large, suppress the trailing null.  */
 924         if (tempLength > len)
 925                 tempLength--;
 926
 927         /* If the string is still too large, fail.  */
 928         if (tempLength > len)
 929                 return FALSE;
 930
 931         /* Copy the string to the field.  */
 932         memcpy (cp, tempString, len);
 933
 934         return TRUE;
 935 }
 936
 937 /* Write out a tar header for the specified file/directory/whatever */
 938 static int
 939 writeTarHeader(struct TarBallInfo *tbInfo, const char *header_name,
 940                 const char *real_name, struct stat *statbuf)
 941 {
 942         long chksum=0;
 943         struct TarHeader header;
 944         const unsigned char *cp = (const unsigned char *) &header;
 945         ssize_t size = sizeof(struct TarHeader);
 946
 947         memset( &header, 0, size);
 948
 949         strncpy(header.name, header_name, sizeof(header.name));
 950
 951         putOctal(header.mode, sizeof(header.mode), statbuf->st_mode);
 952         putOctal(header.uid, sizeof(header.uid), statbuf->st_uid);
 953         putOctal(header.gid, sizeof(header.gid), statbuf->st_gid);
 954         putOctal(header.size, sizeof(header.size), 0); /* Regular file size is handled later */
 955         putOctal(header.mtime, sizeof(header.mtime), statbuf->st_mtime);
 956         strncpy(header.magic, TAR_MAGIC TAR_VERSION,
 957                         TAR_MAGIC_LEN + TAR_VERSION_LEN );
 958
 959         /* Enter the user and group names (default to root if it fails) */
 960         my_getpwuid(header.uname, statbuf->st_uid);
 961         if (! *header.uname)
 962                 strcpy(header.uname, "root");
 963         my_getgrgid(header.gname, statbuf->st_gid);
 964         if (! *header.uname)
 965                 strcpy(header.uname, "root");
 966
 967         if (tbInfo->hlInfo) {
 968                 /* This is a hard link */
 969                 header.typeflag = LNKTYPE;
 970                 strncpy(header.linkname, tbInfo->hlInfo->name, sizeof(header.linkname));
 971         } else if (S_ISLNK(statbuf->st_mode)) {
 972                 int link_size=0;
 973                 char buffer[BUFSIZ];
 974                 header.typeflag  = SYMTYPE;
 975                 link_size = readlink(real_name, buffer, sizeof(buffer) - 1);
 976                 if ( link_size < 0) {
 977                         perror_msg("Error reading symlink '%s'", header.name);
 978                         return ( FALSE);
 979                 }
 980                 buffer[link_size] = '\0';
 981                 strncpy(header.linkname, buffer, sizeof(header.linkname));
 982         } else if (S_ISDIR(statbuf->st_mode)) {
 983                 header.typeflag  = DIRTYPE;
 984                 strncat(header.name, "/", sizeof(header.name));
 985         } else if (S_ISCHR(statbuf->st_mode)) {
 986                 header.typeflag  = CHRTYPE;
 987                 putOctal(header.devmajor, sizeof(header.devmajor), MAJOR(statbuf->st_rdev));
 988                 putOctal(header.devminor, sizeof(header.devminor), MINOR(statbuf->st_rdev));
 989         } else if (S_ISBLK(statbuf->st_mode)) {
 990                 header.typeflag  = BLKTYPE;
 991                 putOctal(header.devmajor, sizeof(header.devmajor), MAJOR(statbuf->st_rdev));
 992                 putOctal(header.devminor, sizeof(header.devminor), MINOR(statbuf->st_rdev));
 993         } else if (S_ISFIFO(statbuf->st_mode)) {
 994                 header.typeflag  = FIFOTYPE;
 995         } else if (S_ISREG(statbuf->st_mode)) {
 996                 header.typeflag  = REGTYPE;
 997                 putOctal(header.size, sizeof(header.size), statbuf->st_size);
 998         } else {
 999                 error_msg("%s: Unknown file type\n", real_name);
1000                 return ( FALSE);
1001         }
1002
1003         /* Calculate and store the checksum (i.e. the sum of all of the bytes of
1004          * the header).  The checksum field must be filled with blanks for the
1005          * calculation.  The checksum field is formatted differently from the
1006          * other fields: it has [6] digits, a null, then a space -- rather than
1007          * digits, followed by a null like the other fields... */
1008         memset(header.chksum, ' ', sizeof(header.chksum));
1009         cp = (const unsigned char *) &header;
1010         while (size-- > 0)
1011                 chksum += *cp++;
1012         putOctal(header.chksum, 7, chksum);
1013
1014         /* Now write the header out to disk */
1015         if ((size=full_write(tbInfo->tarFd, (char*)&header, sizeof(struct TarHeader))) < 0) {
1016                 error_msg(io_error, real_name, strerror(errno));
1017                 return ( FALSE);
1018         }
1019         /* Pad the header up to the tar block size */
1020         for (; size<TAR_BLOCK_SIZE; size++) {
1021                 write(tbInfo->tarFd, "\0", 1);
1022         }
1023         /* Now do the verbose thing (or not) */
1024         if (tbInfo->verboseFlag==TRUE) {
1025                 FILE *vbFd = stdout;
1026                 if (tbInfo->tarFd == fileno(stdout))    // If the archive goes to stdout, verbose to stderr
1027                         vbFd = stderr;
1028                 fprintf(vbFd, "%s\n", header.name);
1029         }
1030
1031         return ( TRUE);
1032 }
1033
1034
1035 static int writeFileToTarball(const char *fileName, struct stat *statbuf, void* userData)
1036 {
1037         struct TarBallInfo *tbInfo = (struct TarBallInfo *)userData;
1038         const char *header_name;
1039 #if defined BB_FEATURE_TAR_EXCLUDE
1040         char** tmpList;
1041 #endif
1042
1043         /*
1044         ** Check to see if we are dealing with a hard link.
1045         ** If so -
1046         ** Treat the first occurance of a given dev/inode as a file while
1047         ** treating any additional occurances as hard links.  This is done
1048         ** by adding the file information to the HardLinkInfo linked list.
1049         */
1050         tbInfo->hlInfo = NULL;
1051         if (statbuf->st_nlink > 1) {
1052                 tbInfo->hlInfo = findHardLinkInfo(tbInfo->hlInfoHead, statbuf->st_dev,
1053                                 statbuf->st_ino);
1054                 if (tbInfo->hlInfo == NULL)
1055                         addHardLinkInfo (&tbInfo->hlInfoHead, statbuf->st_dev,
1056                                         statbuf->st_ino, statbuf->st_nlink, fileName);
1057         }
1058
1059         /* It is against the rules to archive a socket */
1060         if (S_ISSOCK(statbuf->st_mode)) {
1061                 error_msg("%s: socket ignored\n", fileName);
1062                 return( TRUE);
1063         }
1064
1065         /* It is a bad idea to store the archive we are in the process of creating,
1066          * so check the device and inode to be sure that this particular file isn't
1067          * the new tarball */
1068         if (tbInfo->statBuf.st_dev == statbuf->st_dev &&
1069                         tbInfo->statBuf.st_ino == statbuf->st_ino) {
1070                 error_msg("%s: file is the archive; skipping\n", fileName);
1071                 return( TRUE);
1072         }
1073
1074         header_name = fileName;
1075         while (header_name[0] == '/') {
1076                 static int alreadyWarned=FALSE;
1077                 if (alreadyWarned==FALSE) {
1078                         error_msg("Removing leading '/' from member names\n");
1079                         alreadyWarned=TRUE;
1080                 }
1081                 header_name++;
1082         }
1083
1084         if (strlen(fileName) >= NAME_SIZE) {
1085                 error_msg(name_longer_than_foo, NAME_SIZE);
1086                 return ( TRUE);
1087         }
1088
1089         if (header_name[0] == '\0')
1090                 return TRUE;
1091
1092 #if defined BB_FEATURE_TAR_EXCLUDE
1093         /* Check for excluded files....  */
1094         for (tmpList=tbInfo->excludeList; tmpList && *tmpList; tmpList++) {
1095                 /* Do some extra hoop jumping for when directory names
1096                  * end in '/' but the entry in tmpList doesn't */
1097                 if (strncmp( *tmpList, header_name, strlen(*tmpList))==0 || (
1098                                         fileName[strlen(fileName)-1]=='/'
1099                                         && strncmp( *tmpList, fileName,
1100                                                 MIN(strlen(fileName)-1, strlen(*tmpList)))==0)) {
1101                         return SKIP;
1102                 }
1103         }
1104 #endif
1105
1106         if (writeTarHeader(tbInfo, header_name, fileName, statbuf)==FALSE) {
1107                 return( FALSE);
1108         }
1109
1110         /* Now, if the file is a regular file, copy it out to the tarball */
1111         if ((tbInfo->hlInfo == NULL)
1112         &&  (S_ISREG(statbuf->st_mode))) {
1113                 int  inputFileFd;
1114                 char buffer[BUFSIZ];
1115                 ssize_t size=0, readSize=0;
1116
1117                 /* open the file we want to archive, and make sure all is well */
1118                 if ((inputFileFd = open(fileName, O_RDONLY)) < 0) {
1119                         error_msg("%s: Cannot open: %s\n", fileName, strerror(errno));
1120                         return( FALSE);
1121                 }
1122
1123                 /* write the file to the archive */
1124                 while ( (size = full_read(inputFileFd, buffer, sizeof(buffer))) > 0 ) {
1125                         if (full_write(tbInfo->tarFd, buffer, size) != size ) {
1126                                 /* Output file seems to have a problem */
1127                                 error_msg(io_error, fileName, strerror(errno));
1128                                 return( FALSE);
1129                         }
1130                         readSize+=size;
1131                 }
1132                 if (size == -1) {
1133                         error_msg(io_error, fileName, strerror(errno));
1134                         return( FALSE);
1135                 }
1136                 /* Pad the file up to the tar block size */
1137                 for (; (readSize%TAR_BLOCK_SIZE) != 0; readSize++) {
1138                         write(tbInfo->tarFd, "\0", 1);
1139                 }
1140                 close( inputFileFd);
1141         }
1142
1143         return( TRUE);
1144 }
1145
1146 static int writeTarFile(const char* tarName, int verboseFlag, char **argv,
1147                 char** excludeList)
1148 {
1149         int tarFd=-1;
1150         int errorFlag=FALSE;
1151         ssize_t size;
1152         struct TarBallInfo tbInfo;
1153         tbInfo.verboseFlag = verboseFlag;
1154         tbInfo.hlInfoHead = NULL;
1155
1156         /* Make sure there is at least one file to tar up.  */
1157         if (*argv == NULL)
1158                 error_msg_and_die("Cowardly refusing to create an empty archive\n");
1159
1160         /* Open the tar file for writing.  */
1161         if (!strcmp(tarName, "-"))
1162                 tbInfo.tarFd = fileno(stdout);
1163         else
1164                 tbInfo.tarFd = open (tarName, O_WRONLY | O_CREAT | O_TRUNC, 0644);
1165         if (tbInfo.tarFd < 0) {
1166                 perror_msg( "Error opening '%s'", tarName);
1167                 freeHardLinkInfo(&tbInfo.hlInfoHead);
1168                 return ( FALSE);
1169         }
1170         tbInfo.excludeList=excludeList;
1171         /* Store the stat info for the tarball's file, so
1172          * can avoid including the tarball into itself....  */
1173         if (fstat(tbInfo.tarFd, &tbInfo.statBuf) < 0)
1174                 error_msg_and_die(io_error, tarName, strerror(errno));
1175
1176         /* Set the umask for this process so it doesn't
1177          * screw up permission setting for us later. */
1178         umask(0);
1179
1180         /* Read the directory/files and iterate over them one at a time */
1181         while (*argv != NULL) {
1182                 if (recursive_action(*argv++, TRUE, FALSE, FALSE,
1183                                         writeFileToTarball, writeFileToTarball,
1184                                         (void*) &tbInfo) == FALSE) {
1185                         errorFlag = TRUE;
1186                 }
1187         }
1188         /* Write two empty blocks to the end of the archive */
1189         for (size=0; size<(2*TAR_BLOCK_SIZE); size++) {
1190                 write(tbInfo.tarFd, "\0", 1);
1191         }
1192
1193         /* To be pedantically correct, we would check if the tarball
1194          * is smaller than 20 tar blocks, and pad it if it was smaller,
1195          * but that isn't necessary for GNU tar interoperability, and
1196          * so is considered a waste of space */
1197
1198         /* Hang up the tools, close up shop, head home */
1199         close(tarFd);
1200         if (errorFlag == TRUE) {
1201                 error_msg("Error exit delayed from previous errors\n");
1202                 freeHardLinkInfo(&tbInfo.hlInfoHead);
1203                 return(FALSE);
1204         }
1205         freeHardLinkInfo(&tbInfo.hlInfoHead);
1206         return( TRUE);
1207 }
1208
1209
1210 #endif
1211