1 /* 2 * Copyright (c) 2022-2023 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 #ifndef __HVB_OPS_H_ 16 #define __HVB_OPS_H_ 17 #pragma once 18 19 #include <stdbool.h> 20 #include <stdint.h> 21 22 #ifdef __cplusplus 23 extern "C" 24 { 25 #endif 26 27 enum hvb_io_errno { 28 HVB_IO_OK, 29 HVB_IO_ERROR_OOM, 30 HVB_IO_ERROR_IO, 31 HVB_IO_ERROR_NO_SUCH_PARTITION, 32 HVB_IO_ERROR_RANGE_OUTSIDE_PARTITION, 33 HVB_IO_ERROR_NO_SUCH_VALUE, 34 HVB_IO_ERROR_INVALID_VALUE_SIZE, 35 HVB_IO_ERROR_INSUFFICIENT_SPACE, 36 }; 37 38 struct hvb_ops { 39 const void *user_data; 40 enum hvb_io_errno (*read_partition)(struct hvb_ops *ops, const char *ptn, int64_t offset, 41 uint64_t num_bytes, void *buffer, uint64_t *out_num_read); 42 enum hvb_io_errno (*write_partition)(struct hvb_ops *ops, const char *ptn, int64_t offset, 43 uint64_t num_bytes, const void *buffer); 44 enum hvb_io_errno (*valid_rvt_key)(struct hvb_ops *ops, const uint8_t *pubkey, 45 uint64_t pubkey_length, const uint8_t *pubkey_metadata, 46 uint64_t pubkey_metadata_length, bool *out_is_trusted); 47 enum hvb_io_errno (*read_rollback)(struct hvb_ops *ops, 48 uint64_t rollback_index_location, 49 uint64_t *out_rollback_index); 50 enum hvb_io_errno (*write_rollback)(struct hvb_ops *ops, uint64_t rollback_index_location, 51 uint64_t rollback_index); 52 enum hvb_io_errno (*read_lock_state)(struct hvb_ops *ops, bool *lock_state); 53 enum hvb_io_errno (*get_partiton_size)(struct hvb_ops *ops, const char *ptn, uint64_t *out_bytes); 54 }; 55 56 #ifdef __cplusplus 57 } 58 #endif 59 60 #endif