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 "busybox.h" 32 33extern int cpio_main(int argc, char **argv) 34{ 35 FILE *src_stream = stdin; 36 char **extract_names = NULL; 37 int extract_function = 0; 38 int num_of_entries = 0; 39 int opt = 0; 40 mode_t oldmask = 0; 41 42 while ((opt = getopt(argc, argv, "idmuvtF:")) != -1) { 43 switch (opt) { 44 case 'i': // extract 45 extract_function |= extract_all_to_fs; 46 break; 47 case 'd': // create _leading_ directories 48 extract_function |= extract_create_leading_dirs; 49 oldmask = umask(077); /* Make make_directory act like GNU cpio */ 50 break; 51 case 'm': // preserve modification time 52 extract_function |= extract_preserve_date; 53 break; 54 case 'v': // verbosly list files 55 extract_function |= extract_verbose_list; 56 break; 57 case 'u': // unconditional 58 extract_function |= extract_unconditional; 59 break; 60 case 't': // list files 61 extract_function |= extract_list; 62 break; 63 case 'F': 64 src_stream = xfopen(optarg, "r"); 65 break; 66 default: 67 show_usage(); 68 } 69 } 70 71 if ((extract_function & extract_all_to_fs) && (extract_function & extract_list)) { 72 extract_function ^= extract_all_to_fs; /* If specify t, don't extract*/ 73 } 74 75 if ((extract_function & extract_all_to_fs) && (extract_function & extract_verbose_list)) { 76 /* The meaning of v changes on extract */ 77 extract_function ^= extract_verbose_list; 78 extract_function |= extract_list; 79 } 80 81 while (optind < argc) { 82 extract_names = xrealloc(extract_names, sizeof(char *) * (num_of_entries + 2)); 83 extract_names[num_of_entries] = xstrdup(argv[optind]); 84 num_of_entries++; 85 extract_names[num_of_entries] = NULL; 86 optind++; 87 } 88 89 unarchive(src_stream, stdout, &get_header_cpio, extract_function, "./", extract_names); 90 if (oldmask) { 91 umask(oldmask); /* Restore umask if we changed it */ 92 } 93 return EXIT_SUCCESS; 94} 95 96