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kern: implement PermissionLock, update KPageTableBase attribute/alignment checks

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Michael Scire authored and SciresM committed 2023-10-12 08:55:58 -07:00
1 parent 777b6d285c
commit ad5bd81d3f
5 files changed
+114 -20
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libraries/libmesosphere/source/svc/kern_svc_memory.cpp
+4 -1
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@@ -58,10 +58,13 @@ namespace ams::kern::svc {
R_UNLESS((address < address + size), svc::ResultInvalidCurrentMemory());
/* Validate the attribute and mask. */
constexpr u32 SupportedMask = ams::svc::MemoryAttribute_Uncached;
constexpr u32 SupportedMask = ams::svc::MemoryAttribute_Uncached | ams::svc::MemoryAttribute_PermissionLocked;
R_UNLESS((mask | attr) == mask, svc::ResultInvalidCombination());
R_UNLESS((mask | attr | SupportedMask) == SupportedMask, svc::ResultInvalidCombination());
/* Check that permission locked is either being set or not masked. */
R_UNLESS((mask & ams::svc::MemoryAttribute_PermissionLocked) == (attr & ams::svc::MemoryAttribute_PermissionLocked), svc::ResultInvalidCombination());
/* Validate that the region is in range for the current process. */
auto &page_table = GetCurrentProcess().GetPageTable();
R_UNLESS(page_table.Contains(address, size), svc::ResultInvalidCurrentMemory());