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/*
* Copyright (C) 2016 The Android Open Source Project
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#if !defined(AVB_INSIDE_LIBAVB_H) && !defined(AVB_COMPILATION)
#error "Never include this file directly, include libavb.h instead."
#endif
#ifndef AVB_KERNEL_CMDLINE_DESCRIPTOR_H_
#define AVB_KERNEL_CMDLINE_DESCRIPTOR_H_
#include "avb_descriptor.h"
#ifdef __cplusplus
extern "C" {
#endif
/* Flags for kernel command-line descriptors.
*
* AVB_KERNEL_CMDLINE_FLAGS_USE_ONLY_IF_HASHTREE_NOT_DISABLED: The
* cmdline will only be applied if hashtree verification is not
* disabled (cf. AVB_VBMETA_IMAGE_FLAGS_HASHTREE_DISABLED).
*
* AVB_KERNEL_CMDLINE_FLAGS_USE_ONLY_IF_HASHTREE_DISABLED: The cmdline
* will only be applied if hashtree verification is disabled
* (cf. AVB_VBMETA_IMAGE_FLAGS_HASHTREE_DISABLED).
*/
typedef enum {
AVB_KERNEL_CMDLINE_FLAGS_USE_ONLY_IF_HASHTREE_NOT_DISABLED = (1 << 0),
AVB_KERNEL_CMDLINE_FLAGS_USE_ONLY_IF_HASHTREE_DISABLED = (1 << 1)
} AvbKernelCmdlineFlags;
/* A descriptor containing information to be appended to the kernel
* command-line.
*
* The |flags| field contains flags from the AvbKernelCmdlineFlags
* enumeration.
*
* Following this struct are |kernel_cmdline_len| bytes with the
* kernel command-line (UTF-8 encoded).
*/
typedef struct AvbKernelCmdlineDescriptor {
AvbDescriptor parent_descriptor;
uint32_t flags;
uint32_t kernel_cmdline_length;
} AVB_ATTR_PACKED AvbKernelCmdlineDescriptor;
/* Copies |src| to |dest| and validates, byte-swapping fields in the
* process if needed. Returns true if valid, false if invalid.
*
* Data following the struct is not validated nor copied.
*/
bool avb_kernel_cmdline_descriptor_validate_and_byteswap(
const AvbKernelCmdlineDescriptor* src,
AvbKernelCmdlineDescriptor* dest) AVB_ATTR_WARN_UNUSED_RESULT;
#ifdef __cplusplus
}
#endif
#endif /* AVB_KERNEL_CMDLINE_DESCRIPTOR_H_ */
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