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Diffstat (limited to 'reftable/blocksource.h')
| -rw-r--r-- | reftable/blocksource.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/reftable/blocksource.h b/reftable/blocksource.h new file mode 100644 index 0000000000..a110e05958 --- /dev/null +++ b/reftable/blocksource.h @@ -0,0 +1,46 @@ +/* + * Copyright 2020 Google LLC + * + * Use of this source code is governed by a BSD-style + * license that can be found in the LICENSE file or at + * https://developers.google.com/open-source/licenses/bsd + */ + +#ifndef BLOCKSOURCE_H +#define BLOCKSOURCE_H + +#include "system.h" + +struct reftable_block_source; +struct reftable_block_data; +struct reftable_buf; + +/* + * Close the block source and the underlying resource. This is a no-op in case + * the block source is zero-initialized. + */ +void block_source_close(struct reftable_block_source *source); + +/* + * Read a block of length `size` from the source at the given `off`. + */ +ssize_t block_source_read_data(struct reftable_block_source *source, + struct reftable_block_data *dest, uint64_t off, + uint32_t size); + +/* + * Return the total length of the underlying resource. + */ +uint64_t block_source_size(struct reftable_block_source *source); + +/* + * Return a block to its original source, releasing any resources associated + * with it. + */ +void block_source_release_data(struct reftable_block_data *data); + +/* Create an in-memory block source for reading reftables. */ +void block_source_from_buf(struct reftable_block_source *bs, + struct reftable_buf *buf); + +#endif |