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53 lines
2 KiB
C
53 lines
2 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2014, 2017 Mark Johnston <markj@FreeBSD.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _SYS__COMPRESSOR_H_
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#define _SYS__COMPRESSOR_H_
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#ifdef _KERNEL
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/* Supported formats. */
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#define COMPRESS_GZIP 1
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#define COMPRESS_ZSTD 2
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typedef int (*compressor_cb_t)(void *, size_t, off_t, void *);
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struct compressor;
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bool compressor_avail(int format);
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struct compressor *compressor_init(compressor_cb_t cb, int format,
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size_t maxiosize, int level, void *arg);
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void compressor_reset(struct compressor *stream);
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int compressor_write(struct compressor *stream, void *data,
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size_t len);
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int compressor_flush(struct compressor *stream);
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void compressor_fini(struct compressor *stream);
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#endif /* _KERNEL */
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#endif /* _SYS__COMPRESSOR_H_ */
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