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// SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
/* Copyright 2013-2019 IBM Corp. */
#ifndef _SECVAR_H_
#define _SECVAR_H_
#include <ccan/list/list.h>
#include <stdint.h>
#include <secvar.h>
#define SECVAR_MAX_KEY_LEN 1024
enum {
SECVAR_VARIABLE_BANK,
SECVAR_UPDATE_BANK,
};
#define SECVAR_FLAG_VOLATILE 0x1 /* Instructs storage driver to ignore variable on writes */
#define SECVAR_FLAG_PROTECTED 0x2 /* Instructs storage driver to store in lockable flash */
struct secvar {
struct list_node link;
uint64_t key_len;
uint64_t data_size;
uint64_t flags;
char *key;
char *data;
};
extern struct list_head variable_bank;
extern struct list_head update_bank;
extern int secvar_enabled;
extern int secvar_ready;
extern struct secvar_storage_driver secvar_storage;
extern struct secvar_backend_driver secvar_backend;
// Helper functions
void clear_bank_list(struct list_head *bank);
int copy_bank_list(struct list_head *dst, struct list_head *src);
struct secvar *alloc_secvar(uint64_t key_len, uint64_t data_size);
struct secvar *new_secvar(const char *key, uint64_t key_len,
const char *data, uint64_t data_size,
uint64_t flags);
int realloc_secvar(struct secvar *node, uint64_t size);
void dealloc_secvar(struct secvar *node);
struct secvar *find_secvar(const char *key, uint64_t key_len, struct list_head *bank);
int is_key_empty(const char *key, uint64_t key_len);
int list_length(struct list_head *bank);
#endif
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