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kern: implement PermissionLock, update KPageTableBase attribute/alignment checks

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Michael Scire 2023-10-11 07:59:37 -07:00 • committed by SciresM
parent 777b6d285c
commit ad5bd81d3f
5 changed files with 114 additions and 20 deletions
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5
libraries/libmesosphere/source/svc/kern_svc_memory.cpp
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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());