Prepare for switching to libziparchive.

Bug: 19765860
Change-Id: I58249d28fbc4975428d0dcac5107d1994c35676c
diff --git a/fastboot/bootimg_utils.h b/fastboot/bootimg_utils.h
new file mode 100644
index 0000000..b1a86cd
--- /dev/null
+++ b/fastboot/bootimg_utils.h
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef _FASTBOOT_BOOTIMG_UTILS_H_
+#define _FASTBOOT_BOOTIMG_UTILS_H_
+
+#include <bootimg.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+void bootimg_set_cmdline(boot_img_hdr *h, const char *cmdline);
+boot_img_hdr *mkbootimg(void *kernel, unsigned kernel_size, unsigned kernel_offset,
+                        void *ramdisk, unsigned ramdisk_size, unsigned ramdisk_offset,
+                        void *second, unsigned second_size, unsigned second_offset,
+                        unsigned page_size, unsigned base, unsigned tags_offset,
+                        unsigned *bootimg_size);
+
+#if defined(__cplusplus)
+}
+#endif
+
+#endif