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