asmlinkage int sys_iopl(unsigned long turn_on)
{
if (turn_on && !capable(CAP_SYS_RAWIO))
return -EPERM;
/*
* We only support an on_off approach
*/
modify_domain(DOMAIN_IO, turn_on ? DOMAIN_MANAGER : DOMAIN_CLIENT);
return 0;
}
static inline void protect_page_0(void)
{
modify_domain(DOMAIN_USER, DOMAIN_CLIENT);
}
static inline void unprotect_page_0(void)
{
modify_domain(DOMAIN_USER, DOMAIN_MANAGER);
}
