halt_exec
(void) halt_exec(BOOTADM_PROG, "set-menu", buf, NULL);
(void) halt_exec(BEADM_PROG, "umount", bename, NULL);
(void) halt_exec(BEADM_PROG, "umount", bename, NULL);
if ((rc = halt_exec(BEADM_PROG, "mount", bename, FASTBOOT_MOUNTPOINT,