gpgme_sys::gpgme_op_spawn

pub unsafe extern fn gpgme_op_spawn(ctx: gpgme_ctx_t, file: *const c_char, argv: *mut *const c_char, datain: gpgme_data_t, dataout: gpgme_data_t, dataerr: gpgme_data_t, flags: c_uint) -> gpgme_error_t