saveenv
(void) saveenv(fd, "IF_AND_SERVICE");
(void) saveenv(fd, "SERVICE_NAME");
(void) saveenv(fd, "AC_NAME");
(void) saveenv(fd, "AC_MAC");
(void) saveenv(fd, "SESSION_ID");
if (saveenv(fd, envname) <= 0)
saveenv(env);
saveenv(env);