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