dbopen
db = dbopen(db_file_name, mode, DBMMODE, db_type, params);
db = dbopen(buf, omode, DBMMODE, dbtype, openinfo);
up->udb_dbp = dbopen(up->udb_dbname, O_RDONLY,
DB *dbopen __P((const char *, int, int, DBTYPE, const void *));
db->db = dbopen(db->filename, O_RDWR, 0600, DB_BTREE, &db->btinfo);
db->db = dbopen(db->filename, O_RDWR, 0600, DB_HASH, &db->info);
db = dbopen(filename, O_RDWR | O_CREAT | O_EXCL, 0600, DB_BTREE, &btinfo);
db = dbopen(fname, flags, mode,
db = dbopen(fname, flags, mode,
pvt->dbh = dbopen(_PATH_SERVICES_DB, O_RDONLY,O_RDONLY,DB_BTREE, NULL);
*vdb = dbopen(NULL, O_CREAT|O_RDWR, O_CREAT|O_RDWR, DB_HASH, NULL);