freshlybakedca.ke
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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 BLOCKSOURCE_H
10#define BLOCKSOURCE_H
11
12#include "system.h"
13
14struct reftable_block_source;
15struct reftable_block_data;
16struct reftable_buf;
17
18/*
19 * Close the block source and the underlying resource. This is a no-op in case
20 * the block source is zero-initialized.
21 */
22void block_source_close(struct reftable_block_source *source);
23
24/*
25 * Read a block of length `size` from the source at the given `off`.
26 */
27ssize_t block_source_read_data(struct reftable_block_source *source,
28 struct reftable_block_data *dest, uint64_t off,
29 uint32_t size);
30
31/*
32 * Return the total length of the underlying resource.
33 */
34uint64_t block_source_size(struct reftable_block_source *source);
35
36/*
37 * Return a block to its original source, releasing any resources associated
38 * with it.
39 */
40void block_source_release_data(struct reftable_block_data *data);
41
42/* Create an in-memory block source for reading reftables. */
43void block_source_from_buf(struct reftable_block_source *bs,
44 struct reftable_buf *buf);
45
46#endif