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