1/* vi: set sw=4 ts=4: */ 2/* 3 * Mini cpio implementation for busybox 4 * 5 * Copyright (C) 2001 by Glenn McGrath 6 * 7 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. 8 * 9 * Limitations: 10 * Doesn't check CRC's 11 * Only supports new ASCII and CRC formats 12 * 13 */ 14#include "libbb.h" 15#include "unarchive.h" 16 17#define CPIO_OPT_EXTRACT 0x01 18#define CPIO_OPT_TEST 0x02 19#define CPIO_OPT_UNCONDITIONAL 0x04 20#define CPIO_OPT_VERBOSE 0x08 21#define CPIO_OPT_FILE 0x10 22#define CPIO_OPT_CREATE_LEADING_DIR 0x20 23#define CPIO_OPT_PRESERVE_MTIME 0x40 24 25int cpio_main(int argc, char **argv); 26int cpio_main(int argc, char **argv) 27{ 28 archive_handle_t *archive_handle; 29 char *cpio_filename = NULL; 30 unsigned opt; 31 32 /* Initialise */ 33 archive_handle = init_handle(); 34 archive_handle->src_fd = STDIN_FILENO; 35 archive_handle->seek = seek_by_read; 36 archive_handle->flags = ARCHIVE_EXTRACT_NEWER | ARCHIVE_PRESERVE_DATE; 37 38 opt = getopt32(argv, "ituvF:dm", &cpio_filename); 39 40 /* One of either extract or test options must be given */ 41 if ((opt & (CPIO_OPT_TEST | CPIO_OPT_EXTRACT)) == 0) { 42 bb_show_usage(); 43 } 44 45 if (opt & CPIO_OPT_TEST) { 46 /* if both extract and test options are given, ignore extract option */ 47 if (opt & CPIO_OPT_EXTRACT) { 48 opt &= ~CPIO_OPT_EXTRACT; 49 } 50 archive_handle->action_header = header_list; 51 } 52 if (opt & CPIO_OPT_EXTRACT) { 53 archive_handle->action_data = data_extract_all; 54 } 55 if (opt & CPIO_OPT_UNCONDITIONAL) { 56 archive_handle->flags |= ARCHIVE_EXTRACT_UNCONDITIONAL; 57 archive_handle->flags &= ~ARCHIVE_EXTRACT_NEWER; 58 } 59 if (opt & CPIO_OPT_VERBOSE) { 60 if (archive_handle->action_header == header_list) { 61 archive_handle->action_header = header_verbose_list; 62 } else { 63 archive_handle->action_header = header_list; 64 } 65 } 66 if (cpio_filename) { /* CPIO_OPT_FILE */ 67 archive_handle->src_fd = xopen(cpio_filename, O_RDONLY); 68 archive_handle->seek = seek_by_jump; 69 } 70 if (opt & CPIO_OPT_CREATE_LEADING_DIR) { 71 archive_handle->flags |= ARCHIVE_CREATE_LEADING_DIRS; 72 } 73 74 while (optind < argc) { 75 archive_handle->filter = filter_accept_list; 76 llist_add_to(&(archive_handle->accept), argv[optind]); 77 optind++; 78 } 79 80 while (get_header_cpio(archive_handle) == EXIT_SUCCESS); 81 82 return EXIT_SUCCESS; 83} 84