1 files changed, 22 insertions, 0 deletions
diff --git a/archival/libunarchive/unpack_ar_archive.c b/archival/libunarchive/unpack_ar_archive.c
new file mode 100644
index 000000000..6a84ae811
--- /dev/null
+++ b/archival/libunarchive/unpack_ar_archive.c
@@ -0,0 +1,22 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ */
+#include <fcntl.h>
+#include <stdlib.h>
+#include <string.h>
+#include "unarchive.h"
+#include "libbb.h"
+
+void unpack_ar_archive(archive_handle_t *ar_archive)
+{
+	char magic[7];
+
+	xread(ar_archive->src_fd, magic, 7);
+	if (strncmp(magic, "!<arch>", 7) != 0) {
+		bb_error_msg_and_die("invalid ar magic");
+	}
+	ar_archive->offset += 7;
+
+	while (get_header_ar(ar_archive) == EXIT_SUCCESS);
+}