Vboot Reference: Kernel Boot signing utility.

src/platform/vboot_reference/include/kernel_image.h

 /* Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  *
  * Data structure and API definitions for a verified boot kernel image.
  */
 
 #ifndef VBOOT_REFERENCE_KERNEL_IMAGE_H_
 #define VBOOT_REFERENCE_KERNEL_IMAGE_H_
 
@@ skipping 56 matching lines @@
 
 /* Deep free the contents of [image]. */
 void KernelImageFree(KernelImage* image);
 
 /* Read kernel data from file named [input_file].
  *
  * Returns a filled up KernelImage on success, NULL on error.
  */
 KernelImage* ReadKernelImage(const char* input_file);
 
+/* Get the length of the header for kernel image [image]. */
+int GetKernelHeaderLen(const KernelImage* image);
+
 /* Get kernel header binary blob from an [image].
  *
  * Caller owns the returned pointer and must Free() it.
  */
 uint8_t* GetKernelHeaderBlob(const KernelImage* image);
 
 /* Get kernel config binary blob from an [image].
  *
  * Caller owns the returned pointer and must Free() it.
  */
@@ skipping 21 matching lines @@
 /* Error Codes for VerifyFirmware. */
 #define VERIFY_KERNEL_SUCCESS 0
 #define VERIFY_KERNEL_INVALID_IMAGE 1
 #define VERIFY_KERNEL_KEY_SIGNATURE_FAILED 2
 #define VERIFY_KERNEL_INVALID_ALGORITHM 3
 #define VERIFY_KERNEL_CONFIG_SIGNATURE_FAILED 4
 #define VERIFY_KERNEL_SIGNATURE_FAILED 5
 #define VERIFY_KERNEL_WRONG_MAGIC 6
 #define VERIFY_KERNEL_MAX 7  /* Generic catch-all. */
 
-char* kVerifyKernelErrors[VERIFY_KERNEL_MAX];
+extern char* kVerifyKernelErrors[VERIFY_KERNEL_MAX];
 
 /* Checks for the sanity of the kernel header pointed by [kernel_header_blob].
  * If [dev_mode] is enabled, also checks the firmware key signature using the
  * pre-processed public firmware signing  key [firmware_sign_key_blob].
  *
  * On success, put firmware signature algorithm in [firmware_algorithm],
  * kernel signature algorithm in [kernel_algorithm], kernel header
  * length in [header_len], and return 0.
  * Else, return error code on failure.
  */
@@ skipping 71 matching lines @@
 
 /* Add a kernel and kernel config signature to a kernel image [image]
  * using the private signing key in file [kernel_sigining_key_file].
  *
  * Return 1 on success, 0 on failure.
  */
 int AddKernelSignature(KernelImage* image,
                        const char* kernel_sigining_key_file);
 
 #endif  /* VBOOT_REFERENCE_KERNEL_IMAGE_H_ */