97 lines
2.0 KiB
C
97 lines
2.0 KiB
C
/*++
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/* NAME
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/* mkmap_db 3
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/* SUMMARY
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/* create or open database, DB style
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/* SYNOPSIS
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/* #include <mkmap.h>
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/*
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/* MKMAP *mkmap_hash_open(path)
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/* const char *path;
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/*
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/* MKMAP *mkmap_btree_open(path)
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/* const char *path;
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/* DESCRIPTION
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/* This module implements support for creating DB databases.
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/*
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/* mkmap_hash_open() and mkmap_btree_open() take a file name,
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/* append the ".db" suffix, and create or open the named DB
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/* database. This routine is a DB-specific helper for the more
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/* general mkmap_open() interface.
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/*
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/* All errors are fatal.
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/* SEE ALSO
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/* dict_db(3), DB dictionary interface.
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/* LICENSE
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/* .ad
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/* .fi
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/* The Secure Mailer license must be distributed with this software.
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/* AUTHOR(S)
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/* Wietse Venema
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/* IBM T.J. Watson Research
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/* P.O. Box 704
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/* Yorktown Heights, NY 10598, USA
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/*--*/
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/* System library. */
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#include <sys_defs.h>
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/* Utility library. */
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#include <msg.h>
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#include <mymalloc.h>
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#include <stringops.h>
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#include <dict.h>
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#include <dict_db.h>
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/* Application-specific. */
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#include "mkmap.h"
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#ifdef HAS_DB
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#ifdef PATH_DB_H
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#include PATH_DB_H
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#else
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#include <db.h>
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#endif
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/* mkmap_db_open - create or open database */
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static MKMAP *mkmap_db_open(const char *path,
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DICT *(*db_open) (const char *, int, int))
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{
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MKMAP *mkmap = (MKMAP *) mymalloc(sizeof(*mkmap));
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/*
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* Fill in the generic members.
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*/
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mkmap->lock_file = concatenate(path, ".db", (char *) 0);
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mkmap->open = db_open;
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/*
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* Unfortunately, not all systems that might support db databases do
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* support locking on open(), so we open the file before updating it.
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*/
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if ((mkmap->lock_fd = open(mkmap->lock_file, O_CREAT | O_RDWR, 0644)) < 0)
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msg_fatal("open %s: %m", mkmap->lock_file);
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return (mkmap);
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}
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/* mkmap_hash_open - create or open hashed DB file */
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MKMAP *mkmap_hash_open(const char *path)
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{
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return (mkmap_db_open(path, dict_hash_open));
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}
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/* mkmap_btree_open - create or open btree DB file */
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MKMAP *mkmap_btree_open(const char *path)
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{
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return (mkmap_db_open(path, dict_btree_open));
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}
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#endif
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