1 /*
2  * Copyright (C) 2018 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #ifndef __BUILD_VERITY_TREE_UTILS_H__
18 #define __BUILD_VERITY_TREE_UTILS_H__
19 
20 #include <inttypes.h>
21 #include <stddef.h>
22 
div_round_up(uint64_t x,uint64_t y)23 inline uint64_t div_round_up(uint64_t x, uint64_t y) { return (x + y - 1) / y; }
24 
25 size_t verity_tree_blocks(uint64_t data_size, size_t block_size,
26                           size_t hash_size, size_t level);
27 
28 #endif  // __BUILD_VERITY_TREE_UTILS_H__
29