Merge pull request #7621 from bunnei/set-mem-perm
core: hle: kernel: Implement SetMemoryPermission.
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commit
9a0648ff0a
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@ -806,6 +806,33 @@ ResultCode KPageTable::ResetTransferMemory(VAddr addr, std::size_t size) {
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KMemoryAttribute::Locked, KMemoryAttribute::IpcAndDeviceMapped));
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block_manager->Update(addr, size / PageSize, state, KMemoryPermission::ReadAndWrite);
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return ResultSuccess;
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}
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ResultCode KPageTable::SetMemoryPermission(VAddr addr, std::size_t size,
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Svc::MemoryPermission svc_perm) {
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const size_t num_pages = size / PageSize;
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// Lock the table.
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std::lock_guard lock{page_table_lock};
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// Verify we can change the memory permission.
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KMemoryState old_state;
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KMemoryPermission old_perm;
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R_TRY(this->CheckMemoryState(
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std::addressof(old_state), std::addressof(old_perm), nullptr, addr, size,
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KMemoryState::FlagCanReprotect, KMemoryState::FlagCanReprotect, KMemoryPermission::None,
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KMemoryPermission::None, KMemoryAttribute::All, KMemoryAttribute::None));
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// Determine new perm.
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const KMemoryPermission new_perm = ConvertToKMemoryPermission(svc_perm);
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R_SUCCEED_IF(old_perm == new_perm);
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// Perform mapping operation.
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R_TRY(Operate(addr, num_pages, new_perm, OperationType::ChangePermissions));
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// Update the blocks.
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block_manager->Update(addr, num_pages, old_state, new_perm, KMemoryAttribute::None);
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return ResultSuccess;
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}
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@ -47,6 +47,7 @@ public:
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KMemoryInfo QueryInfo(VAddr addr);
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ResultCode ReserveTransferMemory(VAddr addr, std::size_t size, KMemoryPermission perm);
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ResultCode ResetTransferMemory(VAddr addr, std::size_t size);
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ResultCode SetMemoryPermission(VAddr addr, std::size_t size, Svc::MemoryPermission perm);
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ResultCode SetMemoryAttribute(VAddr addr, std::size_t size, KMemoryAttribute mask,
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KMemoryAttribute value);
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ResultCode SetHeapCapacity(std::size_t new_heap_capacity);
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@ -164,6 +164,36 @@ static ResultCode SetHeapSize32(Core::System& system, u32* heap_addr, u32 heap_s
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return result;
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}
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constexpr bool IsValidSetMemoryPermission(MemoryPermission perm) {
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switch (perm) {
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case MemoryPermission::None:
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case MemoryPermission::Read:
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case MemoryPermission::ReadWrite:
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return true;
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default:
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return false;
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}
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}
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static ResultCode SetMemoryPermission(Core::System& system, VAddr address, u64 size,
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MemoryPermission perm) {
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// Validate address / size.
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R_UNLESS(Common::IsAligned(address, PageSize), ResultInvalidAddress);
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R_UNLESS(Common::IsAligned(size, PageSize), ResultInvalidSize);
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R_UNLESS(size > 0, ResultInvalidSize);
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R_UNLESS((address < address + size), ResultInvalidCurrentMemory);
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// Validate the permission.
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R_UNLESS(IsValidSetMemoryPermission(perm), ResultInvalidNewMemoryPermission);
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// Validate that the region is in range for the current process.
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auto& page_table = system.Kernel().CurrentProcess()->PageTable();
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R_UNLESS(page_table.Contains(address, size), ResultInvalidCurrentMemory);
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// Set the memory attribute.
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return page_table.SetMemoryPermission(address, size, perm);
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}
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static ResultCode SetMemoryAttribute(Core::System& system, VAddr address, u64 size, u32 mask,
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u32 attribute) {
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LOG_DEBUG(Kernel_SVC,
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@ -2724,7 +2754,7 @@ static const FunctionDef SVC_Table_32[] = {
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static const FunctionDef SVC_Table_64[] = {
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{0x00, nullptr, "Unknown"},
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{0x01, SvcWrap64<SetHeapSize>, "SetHeapSize"},
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{0x02, nullptr, "SetMemoryPermission"},
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{0x02, SvcWrap64<SetMemoryPermission>, "SetMemoryPermission"},
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{0x03, SvcWrap64<SetMemoryAttribute>, "SetMemoryAttribute"},
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{0x04, SvcWrap64<MapMemory>, "MapMemory"},
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{0x05, SvcWrap64<UnmapMemory>, "UnmapMemory"},
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@ -249,6 +249,14 @@ void SvcWrap64(Core::System& system) {
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func(system, Param(system, 0), Param(system, 1), static_cast<u32>(Param(system, 2))).raw);
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}
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// Used by SetMemoryPermission
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template <ResultCode func(Core::System&, u64, u64, Svc::MemoryPermission)>
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void SvcWrap64(Core::System& system) {
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FuncReturn(system, func(system, Param(system, 0), Param(system, 1),
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static_cast<Svc::MemoryPermission>(Param(system, 2)))
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.raw);
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}
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// Used by MapSharedMemory
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template <ResultCode func(Core::System&, Handle, u64, u64, Svc::MemoryPermission)>
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void SvcWrap64(Core::System& system) {
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