b9cf7d31ab
They implement a space efficent write-once database with fast access path. Switch the services(5) database to use cdb. The size of the database file decreases from 2.1MB disk space to 307KB. Access performance is about the same if setservent(0) is used and about an order of magnitude faster otherwise. services_mkdb defaults to the new format, but can optionally create the old db(3) format as well for statically linked legacy applications.
59 lines
2.0 KiB
C
59 lines
2.0 KiB
C
/* $NetBSD: cdbw.h,v 1.1 2010/04/25 00:54:45 joerg Exp $ */
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/*-
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* Copyright (c) 2010 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Joerg Sonnenberger.
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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
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* are met:
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*
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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 COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* 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 _CDBW_H
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#define _CDBW_H
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#include <sys/cdefs.h>
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#include <inttypes.h>
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#include <stddef.h>
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struct cdbw;
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__BEGIN_DECLS
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struct cdbw *cdbw_open(void);
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int cdbw_put(struct cdbw *, const void *, size_t,
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const void *, size_t);
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int cdbw_put_data(struct cdbw *, const void *, size_t,
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uint32_t *);
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int cdbw_put_key(struct cdbw *, const void *, size_t,
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uint32_t);
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int cdbw_output(struct cdbw *, int, const char[16],
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uint32_t (*)(void));
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void cdbw_close(struct cdbw *);
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__END_DECLS
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#endif /* _CDBW_H */
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