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.
66 lines
2.5 KiB
C
66 lines
2.5 KiB
C
/* $NetBSD: servent.h,v 1.4 2010/04/25 00:54:46 joerg Exp $ */
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/*-
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* Copyright (c) 2004 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 Christos Zoulas.
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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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* 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 the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stdio.h>
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struct servent_data {
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FILE *plainfile;
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struct cdbr *cdb;
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struct servent serv;
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char **aliases;
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size_t maxaliases;
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int flags;
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#define _SV_STAYOPEN 1
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#define _SV_CDB 2
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#define _SV_PLAINFILE 4
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#define _SV_FIRST 8
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uint32_t cdb_index;
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uint8_t *cdb_buf;
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size_t cdb_buf_len;
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char *line;
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void *dummy;
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};
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struct servent *getservent_r(struct servent *, struct servent_data *);
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struct servent *getservbyname_r(const char *, const char *,
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struct servent *, struct servent_data *);
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struct servent *getservbyport_r(int, const char *,
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struct servent *, struct servent_data *);
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void setservent_r(int, struct servent_data *);
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void endservent_r(struct servent_data *);
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int _servent_open(struct servent_data *);
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void _servent_close(struct servent_data *);
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int _servent_getline(struct servent_data *);
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struct servent *_servent_parseline(struct servent_data *, struct servent *);
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struct servent *_servent_parsedb(struct servent_data *, struct servent *,
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const uint8_t *, size_t);
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