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87 lines
2.2 KiB
C
87 lines
2.2 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Mini cpio implementation for busybox
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*
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* Copyright (C) 2001 by Glenn McGrath
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*
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* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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*
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* Limitations:
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* Doesn't check CRC's
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* Only supports new ASCII and CRC formats
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*
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*/
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#include <fcntl.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "unarchive.h"
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#include "busybox.h"
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#define CPIO_OPT_EXTRACT 0x01
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#define CPIO_OPT_TEST 0x02
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#define CPIO_OPT_UNCONDITIONAL 0x04
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#define CPIO_OPT_VERBOSE 0x08
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#define CPIO_OPT_FILE 0x10
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#define CPIO_OPT_CREATE_LEADING_DIR 0x20
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#define CPIO_OPT_PRESERVE_MTIME 0x40
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int cpio_main(int argc, char **argv)
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{
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archive_handle_t *archive_handle;
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char *cpio_filename = NULL;
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unsigned opt;
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/* Initialise */
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archive_handle = init_handle();
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archive_handle->src_fd = STDIN_FILENO;
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archive_handle->seek = seek_by_read;
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archive_handle->flags = ARCHIVE_EXTRACT_NEWER | ARCHIVE_PRESERVE_DATE;
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opt = getopt32(argc, argv, "ituvF:dm", &cpio_filename);
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/* One of either extract or test options must be given */
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if ((opt & (CPIO_OPT_TEST | CPIO_OPT_EXTRACT)) == 0) {
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bb_show_usage();
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}
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if (opt & CPIO_OPT_TEST) {
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/* if both extract and test options are given, ignore extract option */
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if (opt & CPIO_OPT_EXTRACT) {
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opt &= ~CPIO_OPT_EXTRACT;
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}
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archive_handle->action_header = header_list;
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}
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if (opt & CPIO_OPT_EXTRACT) {
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archive_handle->action_data = data_extract_all;
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}
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if (opt & CPIO_OPT_UNCONDITIONAL) {
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archive_handle->flags |= ARCHIVE_EXTRACT_UNCONDITIONAL;
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archive_handle->flags &= ~ARCHIVE_EXTRACT_NEWER;
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}
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if (opt & CPIO_OPT_VERBOSE) {
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if (archive_handle->action_header == header_list) {
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archive_handle->action_header = header_verbose_list;
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} else {
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archive_handle->action_header = header_list;
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}
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}
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if (cpio_filename) { /* CPIO_OPT_FILE */
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archive_handle->src_fd = xopen(cpio_filename, O_RDONLY);
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archive_handle->seek = seek_by_jump;
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}
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if (opt & CPIO_OPT_CREATE_LEADING_DIR) {
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archive_handle->flags |= ARCHIVE_CREATE_LEADING_DIRS;
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}
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while (optind < argc) {
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archive_handle->filter = filter_accept_list;
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llist_add_to(&(archive_handle->accept), argv[optind]);
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optind++;
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}
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while (get_header_cpio(archive_handle) == EXIT_SUCCESS);
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return EXIT_SUCCESS;
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}
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