int pg_db_lo_open ();
int pg_db_lo_close ();
int pg_db_lo_read ();
int pg_db_lo_write ();
int pg_db_lo_lseek ();
unsigned int pg_db_lo_creat ();
int pg_db_lo_tell ();
int pg_db_lo_unlink ();
unsigned int pg_db_lo_import ();
int pg_db_lo_export ();