diff options
Diffstat (limited to 'archival/cpio.c')
-rw-r--r-- | archival/cpio.c | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/archival/cpio.c b/archival/cpio.c new file mode 100644 index 000000000..73651ba10 --- /dev/null +++ b/archival/cpio.c @@ -0,0 +1,86 @@ +/* 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 opt; + + /* Initialise */ + archive_handle = init_handle(); + archive_handle->src_fd = STDIN_FILENO; + archive_handle->seek = seek_by_read; + archive_handle->flags = ARCHIVE_EXTRACT_NEWER | ARCHIVE_PRESERVE_DATE; + + opt = getopt32(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 = 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; +} |