Function sqlite3_sys::sqlite3_blob_open

pub unsafe extern fn sqlite3_blob_open(p: *mut sqlite3,
                                       p: *const c_char,
                                       p: *const c_char,
                                       p: *const c_char,
                                       n: sqlite3_int64,
                                       n: c_int,
                                       pp: *mut *mut sqlite3_blob)
                                       -> c_int