ENV_BOOTED_OSFLAGS
nbytes = callback_getenv(ENV_BOOTED_OSFLAGS, envval, sizeof(envval));
nbytes = callback_getenv(ENV_BOOTED_OSFLAGS, envval, sizeof(envval));
nbytes = callback_getenv(ENV_BOOTED_OSFLAGS, envval, sizeof(envval));
{ "booted_osflags", ENV_BOOTED_OSFLAGS },