archival/cpio.c

   1 /* vi: set sw=4 ts=4: */
   2 /*
   3  * Mini cpio implementation for busybox
   4  *
   5  * Copyright (C) 2001 by Glenn McGrath
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  15  * General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  20  *
  21  * Limitations:
  22  *              Doesn't check CRC's
  23  *              Only supports new ASCII and CRC formats
  24  *
  25  */
  26 #include <fcntl.h>
  27 #include <getopt.h>
  28 #include <stdlib.h>
  29 #include <string.h>
  30 #include <unistd.h>
  31 #include "unarchive.h"
  32 #include "busybox.h"
  33
  34 extern int cpio_main(int argc, char **argv)
  35 {
  36         archive_handle_t *archive_handle;
  37         int opt;
  38
  39         /* Initialise */
  40         archive_handle = init_handle();
  41         archive_handle->src_fd = fileno(stdin);
  42         archive_handle->seek = seek_by_char;
  43         archive_handle->flags = ARCHIVE_EXTRACT_NEWER | ARCHIVE_PRESERVE_DATE;
  44
  45         while ((opt = getopt(argc, argv, "idmuvtF:")) != -1) {
  46                 switch (opt) {
  47                 case 'i': /* extract */
  48                         archive_handle->action_data = data_extract_all;
  49                         break;
  50                 case 'd': /* create _leading_ directories */
  51                         archive_handle->flags |= ARCHIVE_CREATE_LEADING_DIRS;
  52                         break;
  53 #if 0
  54                 case 'm': /* preserve modification time */
  55                         archive_handle->flags |= ARCHIVE_PRESERVE_DATE;
  56                         break;
  57 #endif
  58                 case 'v': /* verbosly list files */
  59                         if (archive_handle->action_header == header_list) {
  60                                 archive_handle->action_header = header_verbose_list;
  61                         } else {
  62                                 archive_handle->action_header = header_list;
  63                         }
  64                         break;
  65                 case 'u': /* unconditional */
  66                         archive_handle->flags |= ARCHIVE_EXTRACT_UNCONDITIONAL;
  67                         archive_handle->flags &= ~ARCHIVE_EXTRACT_NEWER;
  68                         break;
  69                 case 't': /* list files */
  70                         if (archive_handle->action_header == header_list) {
  71                                 archive_handle->action_header = header_verbose_list;
  72                         } else {
  73                                 archive_handle->action_header = header_list;
  74                         }
  75                         break;
  76                 case 'F':
  77                         archive_handle->src_fd = bb_xopen(optarg, O_RDONLY);
  78                         archive_handle->seek = seek_by_jump;
  79                         break;
  80                 default:
  81                         bb_show_usage();
  82                 }
  83         }
  84
  85         while (optind < argc) {
  86                 archive_handle->filter = filter_accept_list;
  87                 archive_handle->accept = llist_add_to(archive_handle->accept, argv[optind]);
  88                 optind++;
  89         }
  90
  91         while (get_header_cpio(archive_handle) == EXIT_SUCCESS);
  92
  93         return(EXIT_SUCCESS);
  94 }