avb_cmdline.h
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/* SPDX-License-Identifier: MIT */
/*
* Copyright (C) 2016 The Android Open Source Project
*/
#ifdef AVB_INSIDE_LIBAVB_H
#error "You can't include avb_sha.h in the public header libavb.h."
#endif
#ifndef AVB_COMPILATION
#error "Never include this file, it may only be used from internal avb code."
#endif
#ifndef AVB_CMDLINE_H_
#define AVB_CMDLINE_H_
#include "avb_ops.h"
#include "avb_slot_verify.h"
/* Maximum allow length (in bytes) of a partition name, including
* ab_suffix.
*/
#define AVB_PART_NAME_MAX_SIZE 32
#define AVB_MAX_NUM_CMDLINE_SUBST 10
/* Holds information about command-line substitutions. */
typedef struct AvbCmdlineSubstList {
size_t size;
char* tokens[AVB_MAX_NUM_CMDLINE_SUBST];
char* values[AVB_MAX_NUM_CMDLINE_SUBST];
} AvbCmdlineSubstList;
/* Substitutes all variables (e.g. $(ANDROID_SYSTEM_PARTUUID)) with
* values. Returns NULL on OOM, otherwise the cmdline with values
* replaced.
*/
char* avb_sub_cmdline(AvbOps* ops,
const char* cmdline,
const char* ab_suffix,
bool using_boot_for_vbmeta,
const AvbCmdlineSubstList* additional_substitutions);
AvbSlotVerifyResult avb_append_options(
AvbOps* ops,
AvbSlotVerifyData* slot_data,
AvbVBMetaImageHeader* toplevel_vbmeta,
AvbAlgorithmType algorithm_type,
AvbHashtreeErrorMode hashtree_error_mode);
/* Allocates and initializes a new command line substitution list. Free with
* |avb_free_cmdline_subst_list|.
*/
AvbCmdlineSubstList* avb_new_cmdline_subst_list(void);
/* Use this instead of |avb_free| to deallocate a AvbCmdlineSubstList. */
void avb_free_cmdline_subst_list(AvbCmdlineSubstList* cmdline_subst);
/* Adds a hashtree root digest to be substituted in $(AVB_*_ROOT_DIGEST)
* variables. The partition name differentiates the variable. For example, if
* |part_name| is "foo" then $(AVB_FOO_ROOT_DIGEST) will be substituted with the
* hex encoding of the digest. The substitution will be added to
* |out_cmdline_subst|. Returns AVB_SLOT_VERIFY_RESULT_OK on success.
*/
AvbSlotVerifyResult avb_add_root_digest_substitution(
const char* part_name,
const uint8_t* digest,
size_t digest_size,
AvbCmdlineSubstList* out_cmdline_subst);
#endif