| 1 | /* |
| 2 | * Copyright 2020 Google LLC |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style |
| 5 | * license that can be found in the LICENSE file or at |
| 6 | * https://developers.google.com/open-source/licenses/bsd |
| 7 | */ |
| 8 | |
| 9 | #ifndef REFTABLE_BASICS_H |
| 10 | #define REFTABLE_BASICS_H |
| 11 | |
| 12 | #include "reftable-system.h" |
| 13 | |
| 14 | /* A buffer that contains arbitrary byte slices. */ |
| 15 | struct reftable_buf { |
| 16 | size_t alloc; |
| 17 | size_t len; |
| 18 | char *buf; |
| 19 | }; |
| 20 | #define REFTABLE_BUF_INIT { 0 } |
| 21 | |
| 22 | /* |
| 23 | * Hash functions understood by the reftable library. Note that the values are |
| 24 | * arbitrary and somewhat random such that we can easily detect cases where the |
| 25 | * hash hasn't been properly set up. |
| 26 | */ |
| 27 | enum reftable_hash { |
| 28 | REFTABLE_HASH_SHA1 = 89, |
| 29 | REFTABLE_HASH_SHA256 = 247, |
| 30 | }; |
| 31 | #define REFTABLE_HASH_SIZE_SHA1 20 |
| 32 | #define REFTABLE_HASH_SIZE_SHA256 32 |
| 33 | #define REFTABLE_HASH_SIZE_MAX REFTABLE_HASH_SIZE_SHA256 |
| 34 | |
| 35 | /* Overrides the functions to use for memory management. */ |
| 36 | void reftable_set_alloc(void *(*malloc)(size_t), |
| 37 | void *(*realloc)(void *, size_t), void (*free)(void *)); |
| 38 | |
| 39 | #endif |