int
sys_aspace_create(
id_t id_request,
const char __user * name,
id_t __user * id
)
{
int status;
char _name[16];
id_t _id;
if (current->uid != 0)
return -EPERM;
if ((id_request != ANY_ID) &&
((id_request < UASPACE_MIN_ID) || (id_request > UASPACE_MAX_ID)))
return -EINVAL;
if (strncpy_from_user(_name, name, sizeof(_name)) < 0)
return -EFAULT;
_name[sizeof(_name) - 1] = '\0';
if ((status = aspace_create(id_request, _name, &_id)) != 0)
return status;
if (id && copy_to_user(id, &_id, sizeof(_id)))
return -EFAULT;
return 0;
}
static int
aspace_api_test(void)
{
int status;
id_t my_id, new_id;
printf("\n");
printf("TEST BEGIN: Address Space Management\n");
status = aspace_get_myid(&my_id);
if (status) {
printf("ERROR: aspace_get_myid() status=%d\n", status);
return -1;
}
printf(" My address space ID is %u\n", my_id);
printf(" Creating a new aspace: ");
status = aspace_create(ANY_ID, "TEST-ASPACE", &new_id);
if (status) {
printf("\nERROR: aspace_create() status=%d\n", status);
return -1;
}
printf("id=%u\n", new_id);
printf(" Using SMARTMAP to map myself into aspace %u\n", new_id);
status = aspace_smartmap(my_id, new_id, SMARTMAP_ALIGN, SMARTMAP_ALIGN);
if (status) {
printf("ERROR: aspace_smartmap() status=%d\n", status);
return -1;
}
aspace_dump2console(new_id);
status = aspace_unsmartmap(my_id, new_id);
if (status) {
printf("ERROR: aspace_unsmartmap() status=%d\n", status);
return -1;
}
printf(" Destroying a aspace %u: ", new_id);
status = aspace_destroy(new_id);
if (status) {
printf("ERROR: aspace_destroy() status=%d\n", status);
return -1;
}
printf("OK\n");
printf("TEST END: Address Space Management\n");
return 0;
}
//init this module
void realmode_init()
{
//reserve address range for our realmode code and bios data areas
phys_addr_t res;
res = mm_physical_alloc_ext(RM_REGION_SIZE, 0, 0, 0,
RM_REGION_START, RM_REGION_START + RM_REGION_SIZE);
if (res == INVALID_PHYSICAL_ADDRESS)
fatal("d'oh 1");
//BDA
res = mm_physical_alloc_ext(4096, 0, 0, 0, 4096*2, 4096*30);
if (res == INVALID_PHYSICAL_ADDRESS)
fatal("d'oh 2");
//EBDA
res = mm_physical_alloc_ext(4096, 0, 0, 0, 636*1024, 640*1024);
if (res == INVALID_PHYSICAL_ADDRESS)
fatal("d'oh 3");
spinlock_init(&g_lock_stupido, "Spinlock Stupido (TM)");
g_realmode_aspace = aspace_create();
if (!g_realmode_aspace)
fatal("out of memory");
}