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