unsigned int *arch_map_perms(int task, struct permissions *perms, unsigned int pos)
{
#ifdef PAGING
unsigned int *map = (unsigned int*)AUX_PAGE_SLOT(curr_thread);
unsigned int *b = perms->bitmap + getbit_pos(pos - perms->start);
if(verify_present(b, false) == SUCCESS)
{
// page is present
import_page(task, b, NULL);
return map;
}
else
{
// raise a page fault
last_page_fault.task_id = task;
last_page_fault.thread_id = curr_thread;
last_page_fault.linear = perms->bitmap;
last_page_fault.pg_size = PG_SIZE;
last_page_fault.flags = PF_FLAG_EXT;
#ifdef _SMP_
mk_leave(x);
#endif
arch_issue_page_fault();
#ifdef _SMP_
x = mk_enter();
#endif
return NULL;
}
#else
return (unsigned int*)((unsigned int)MAKE_KRN_PTR(perms->bitmap) + getbit_pos(pos - perms->start) * 4);
#endif
}
int arch_get_perms(int task, struct permissions *localperms, struct permissions *p)
{
struct permissions *map = (struct permissions*)AUX_PAGE_SLOT(curr_thread);
#ifdef PAGING
if(verify_present(localperms, false) == SUCCESS)
{
// page is present
if(curr_task != task)
{
import_page(task, localperms, NULL);
map = (struct permissions*)((unsigned int)map + ((unsigned int)localperms) % PG_SIZE);
p->length = map->length;
p->start = map->start;
}
else
{
localperms = (struct permissions*)MAKE_KRN_PTR(localperms);
p->length = localperms->length;
p->start = localperms->start;
}
}
else
{
// raise a page fault
last_page_fault.task_id = task;
last_page_fault.thread_id = curr_thread;
last_page_fault.linear = localperms;
last_page_fault.pg_size = PG_SIZE;
last_page_fault.flags = PF_FLAG_EXT;
#ifdef _SMP_
mk_leave(x);
#endif
arch_issue_page_fault();
#ifdef _SMP_
x = mk_enter();
#endif
return FAILURE;
}
#else
localperms = (struct permissions*)MAKE_KRN_PTR(localperms);
p->length = localperms->length;
p->start = localperms->start;
#endif
return SUCCESS;
}
void option_parser::verify() const {
const json::object_t* s = nullptr;
if (not this->find_options_schema(s)) return;
auto& r = this->get_options().as_object();
auto e = r.end();
for (auto& i : *s) {
if (r.find(i.first) != e) continue;
auto& o = i.second.as_object();
auto x = o.find(option_key::required);
if (x == o.end()) continue;
verify_present(x->second, r, e, i.first);
}
}