avb_kernel_cmdline_descriptor.h
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/* SPDX-License-Identifier: MIT */
/*
* Copyright (C) 2016 The Android Open Source Project
*/
#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_ */