static void free_contiguous_memory(unsigned long mem,
u_int tot_mem_len, u_int mem_order) {
if(unlikely(enable_debug))
printk("[DNA] free_contiguous_memory(0x%08lx,%u,%d)\n",
mem, tot_mem_len, mem_order);
if(mem != 0) {
unreserve_memory(mem, tot_mem_len);
free_pages(mem, mem_order);
}
}
int
master_exit(void)
{
/* Determine if any enclaves are running - if so, we cannot exit */
struct enclave_info * enclaves = NULL;
uint32_t num_enclaves;
enclaves = hobbes_get_enclave_list(&num_enclaves);
if (enclaves == NULL) {
ERROR("Could not retrieve enclave list\n");
return -1;
}
switch (num_enclaves) {
case 0:
ERROR("0 active enclaves: the master DB has been corrupted\n");
return -1;
case 1:
break;
default:
ERROR("Cannot stop Leviathan: there are %d active enclaves that must be destroyed first\n",
num_enclaves - 1);
free(enclaves);
return -1;
}
/* Ensure that the enclave is just the master */
if (enclaves[0].type != MASTER_ENCLAVE) {
ERROR("Only 1 enclave running, but it is not the master. Cannot stop Leviathan\n");
free(enclaves);
return -1;
}
free(enclaves);
/* Re-online all resources */
release_memory();
release_cpus();
/* Ensure all resources are unlocked */
unreserve_memory();
unreserve_cpus();
return 0;
}