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Kernel: Unbreak ASLR in the new RegionTree world

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Functions that allocate and/or place a Region now take a parameter
that tells it whether to randomize unspecified addresses.
This commit is contained in:
Andreas Kling 2022-04-03 18:46:27 +02:00
parent e89c9ed2ca
commit 858b196c59
9 changed files with 33 additions and 27 deletions
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7
Kernel/Memory/RegionTree.h
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@ -15,6 +15,11 @@
namespace Kernel::Memory {
enum class RandomizeVirtualAddress {
No,
Yes,
};
class RegionTree {
AK_MAKE_NONCOPYABLE(RegionTree);
AK_MAKE_NONMOVABLE(RegionTree);
@ -34,7 +39,7 @@ public:
ErrorOr<NonnullOwnPtr<Region>> allocate_unbacked_anywhere(size_t size, size_t alignment = PAGE_SIZE);
ErrorOr<void> place_anywhere(Region&, size_t size, size_t alignment = PAGE_SIZE);
ErrorOr<void> place_anywhere(Region&, RandomizeVirtualAddress, size_t size, size_t alignment = PAGE_SIZE);
ErrorOr<void> place_specifically(Region&, VirtualRange const&);
ErrorOr<NonnullOwnPtr<Memory::Region>> create_identity_mapped_region(PhysicalAddress, size_t);