Changeset View

Standalone View

Show First 20 Lines • Show All 2,675 Lines • ▼ Show 20 Lines	if (prot & VM_PROT_EXECUTE)
flags \|= PF_X;		flags \|= PF_X;
if (prot & VM_PROT_READ)		if (prot & VM_PROT_READ)
flags \|= PF_R;		flags \|= PF_R;
if (prot & VM_PROT_WRITE)		if (prot & VM_PROT_WRITE)
flags \|= PF_W;		flags \|= PF_W;
return (flags);		return (flags);
}		}

void		vm_size_t
__elfN(stackgap)(struct image_params imgp, uintptr_t stack_base)		__elfN(stackgap)(struct image_params imgp, uintptr_t stack_base)
{		{
uintptr_t range, rbase, gap;		uintptr_t range, rbase, gap;
int pct;		int pct;

pct = __elfN(aslr_stack_gap);		pct = __elfN(aslr_stack_gap);
if (pct == 0)		if (pct == 0)
return;		return (0);
if (pct > 50)		if (pct > 50)
pct = 50;		pct = 50;
range = imgp->eff_stack_sz * pct / 100;		range = imgp->eff_stack_sz * pct / 100;
arc4rand(&rbase, sizeof(rbase), 0);		arc4rand(&rbase, sizeof(rbase), 0);
gap = rbase % range;		gap = rbase % range;
gap &= ~(sizeof(u_long) - 1);		gap &= ~(sizeof(u_long) - 1);
*stack_base -= gap;		*stack_base -= gap;
		kibUnsubmitted Not Done Inline Actions I suggest to move the assignment from there to exec_stackgap(). Both to have the set up/cleaning in the same place, and to make vm_stkgap initialization non depended on specific image activator. kib: I suggest to move the assignment from there to exec_stackgap(). Both to have the set…
		return (gap);
}		}