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Merge pull request #7394 from Morph1984/svc-SetMemoryPermission 

kernel: svc: Implement SetProcessMemoryPermission
This commit is contained in:
bunnei 2021-11-22 14:06:09 -08:00 committed by GitHub
parent ee76b546d4 5cf93c1346
commit daecbd3a7f
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GPG Key ID: 4AEE18F83AFDEB23
5 changed files with 64 additions and 12 deletions
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4
src/core/hle/kernel/k_page_table.cpp
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@ -685,8 +685,8 @@ ResultCode KPageTable::UnmapPages(VAddr addr, KPageLinkedList& page_linked_list,
return ResultSuccess;
}
ResultCode KPageTable::SetCodeMemoryPermission(VAddr addr, std::size_t size,
KMemoryPermission perm) {
ResultCode KPageTable::SetProcessMemoryPermission(VAddr addr, std::size_t size,
KMemoryPermission perm) {
std::lock_guard lock{page_table_lock};

2
src/core/hle/kernel/k_page_table.h
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@ -41,7 +41,7 @@ public:
ResultCode MapPages(VAddr addr, KPageLinkedList& page_linked_list, KMemoryState state,
KMemoryPermission perm);
ResultCode UnmapPages(VAddr addr, KPageLinkedList& page_linked_list, KMemoryState state);
ResultCode SetCodeMemoryPermission(VAddr addr, std::size_t size, KMemoryPermission perm);
ResultCode SetProcessMemoryPermission(VAddr addr, std::size_t size, KMemoryPermission perm);
KMemoryInfo QueryInfo(VAddr addr);
ResultCode ReserveTransferMemory(VAddr addr, std::size_t size, KMemoryPermission perm);
ResultCode ResetTransferMemory(VAddr addr, std::size_t size);

2
src/core/hle/kernel/k_process.cpp
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@ -528,7 +528,7 @@ void KProcess::LoadModule(CodeSet code_set, VAddr base_addr) {
std::lock_guard lock{HLE::g_hle_lock};
const auto ReprotectSegment = [&](const CodeSet::Segment& segment,
KMemoryPermission permission) {
page_table->SetCodeMemoryPermission(segment.addr + base_addr, segment.size, permission);
page_table->SetProcessMemoryPermission(segment.addr + base_addr, segment.size, permission);
};
kernel.System().Memory().WriteBlock(*this, base_addr, code_set.memory.data(),

60
src/core/hle/kernel/svc.cpp
View File

@ -1169,6 +1169,8 @@ static u32 GetCurrentProcessorNumber32(Core::System& system) {
return GetCurrentProcessorNumber(system);
}
namespace {
constexpr bool IsValidSharedMemoryPermission(Svc::MemoryPermission perm) {
switch (perm) {
case Svc::MemoryPermission::Read:
@ -1179,10 +1181,24 @@ constexpr bool IsValidSharedMemoryPermission(Svc::MemoryPermission perm) {
}
}
constexpr bool IsValidRemoteSharedMemoryPermission(Svc::MemoryPermission perm) {
[[maybe_unused]] constexpr bool IsValidRemoteSharedMemoryPermission(Svc::MemoryPermission perm) {
return IsValidSharedMemoryPermission(perm) || perm == Svc::MemoryPermission::DontCare;
}
constexpr bool IsValidProcessMemoryPermission(Svc::MemoryPermission perm) {
switch (perm) {
case Svc::MemoryPermission::None:
case Svc::MemoryPermission::Read:
case Svc::MemoryPermission::ReadWrite:
case Svc::MemoryPermission::ReadExecute:
return true;
default:
return false;
}
}
} // Anonymous namespace
static ResultCode MapSharedMemory(Core::System& system, Handle shmem_handle, VAddr address,
u64 size, Svc::MemoryPermission map_perm) {
LOG_TRACE(Kernel_SVC,
@ -1262,6 +1278,34 @@ static ResultCode UnmapSharedMemory32(Core::System& system, Handle shmem_handle,
return UnmapSharedMemory(system, shmem_handle, address, size);
}
static ResultCode SetProcessMemoryPermission(Core::System& system, Handle process_handle,
VAddr address, u64 size, Svc::MemoryPermission perm) {
LOG_TRACE(Kernel_SVC,
"called, process_handle=0x{:X}, addr=0x{:X}, size=0x{:X}, permissions=0x{:08X}",
process_handle, address, size, perm);
// Validate the address/size.
R_UNLESS(Common::IsAligned(address, PageSize), ResultInvalidAddress);
R_UNLESS(Common::IsAligned(size, PageSize), ResultInvalidSize);
R_UNLESS(size > 0, ResultInvalidSize);
R_UNLESS((address < address + size), ResultInvalidCurrentMemory);
// Validate the memory permission.
R_UNLESS(IsValidProcessMemoryPermission(perm), ResultInvalidNewMemoryPermission);
// Get the process from its handle.
KScopedAutoObject process =
system.CurrentProcess()->GetHandleTable().GetObject<KProcess>(process_handle);
R_UNLESS(process.IsNotNull(), ResultInvalidHandle);
// Validate that the address is in range.
auto& page_table = process->PageTable();
R_UNLESS(page_table.Contains(address, size), ResultInvalidCurrentMemory);
// Set the memory permission.
return page_table.SetProcessMemoryPermission(address, size, ConvertToKMemoryPermission(perm));
}
static ResultCode QueryProcessMemory(Core::System& system, VAddr memory_info_address,
VAddr page_info_address, Handle process_handle,
VAddr address) {
@ -1459,10 +1503,14 @@ static void ExitProcess32(Core::System& system) {
ExitProcess(system);
}
static constexpr bool IsValidVirtualCoreId(int32_t core_id) {
namespace {
constexpr bool IsValidVirtualCoreId(int32_t core_id) {
return (0 <= core_id && core_id < static_cast<int32_t>(Core::Hardware::NUM_CPU_CORES));
}
} // Anonymous namespace
/// Creates a new thread
static ResultCode CreateThread(Core::System& system, Handle* out_handle, VAddr entry_point, u64 arg,
VAddr stack_bottom, u32 priority, s32 core_id) {
@ -1846,7 +1894,9 @@ static ResultCode ResetSignal32(Core::System& system, Handle handle) {
return ResetSignal(system, handle);
}
static constexpr bool IsValidTransferMemoryPermission(MemoryPermission perm) {
namespace {
constexpr bool IsValidTransferMemoryPermission(MemoryPermission perm) {
switch (perm) {
case MemoryPermission::None:
case MemoryPermission::Read:
@ -1857,6 +1907,8 @@ static constexpr bool IsValidTransferMemoryPermission(MemoryPermission perm) {
}
}
} // Anonymous namespace
/// Creates a TransferMemory object
static ResultCode CreateTransferMemory(Core::System& system, Handle* out, VAddr address, u64 size,
MemoryPermission map_perm) {
@ -2588,7 +2640,7 @@ static const FunctionDef SVC_Table_64[] = {
{0x70, nullptr, "CreatePort"},
{0x71, nullptr, "ManageNamedPort"},
{0x72, nullptr, "ConnectToPort"},
{0x73, nullptr, "SetProcessMemoryPermission"},
{0x73, SvcWrap64<SetProcessMemoryPermission>, "SetProcessMemoryPermission"},
{0x74, nullptr, "MapProcessMemory"},
{0x75, nullptr, "UnmapProcessMemory"},
{0x76, SvcWrap64<QueryProcessMemory>, "QueryProcessMemory"},

8
src/core/hle/service/ldr/ldr.cpp
View File

@ -396,12 +396,12 @@ public:
CopyCode(nro_addr + nro_header.segment_headers[DATA_INDEX].memory_offset, data_start,
nro_header.segment_headers[DATA_INDEX].memory_size);
CASCADE_CODE(process->PageTable().SetCodeMemoryPermission(
CASCADE_CODE(process->PageTable().SetProcessMemoryPermission(
text_start, ro_start - text_start, Kernel::KMemoryPermission::ReadAndExecute));
CASCADE_CODE(process->PageTable().SetCodeMemoryPermission(ro_start, data_start - ro_start,
Kernel::KMemoryPermission::Read));
CASCADE_CODE(process->PageTable().SetProcessMemoryPermission(
ro_start, data_start - ro_start, Kernel::KMemoryPermission::Read));
return process->PageTable().SetCodeMemoryPermission(
return process->PageTable().SetProcessMemoryPermission(
data_start, bss_end_addr - data_start, Kernel::KMemoryPermission::ReadAndWrite);
}