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;
+}