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-rw-r--r--src/core/hle/kernel/errors.h1
-rw-r--r--src/core/hle/kernel/handle_table.cpp40
-rw-r--r--src/core/hle/kernel/handle_table.h25
-rw-r--r--src/core/hle/kernel/process.cpp8
-rw-r--r--src/core/hle/kernel/process_capability.cpp4
-rw-r--r--src/core/hle/kernel/process_capability.h4
6 files changed, 63 insertions, 19 deletions
diff --git a/src/core/hle/kernel/errors.h b/src/core/hle/kernel/errors.h
index d17eb0cb6..8097b3863 100644
--- a/src/core/hle/kernel/errors.h
+++ b/src/core/hle/kernel/errors.h
@@ -14,6 +14,7 @@ constexpr ResultCode ERR_MAX_CONNECTIONS_REACHED{ErrorModule::Kernel, 7};
constexpr ResultCode ERR_INVALID_CAPABILITY_DESCRIPTOR{ErrorModule::Kernel, 14};
constexpr ResultCode ERR_INVALID_SIZE{ErrorModule::Kernel, 101};
constexpr ResultCode ERR_INVALID_ADDRESS{ErrorModule::Kernel, 102};
+constexpr ResultCode ERR_OUT_OF_MEMORY{ErrorModule::Kernel, 104};
constexpr ResultCode ERR_HANDLE_TABLE_FULL{ErrorModule::Kernel, 105};
constexpr ResultCode ERR_INVALID_ADDRESS_STATE{ErrorModule::Kernel, 106};
constexpr ResultCode ERR_INVALID_MEMORY_PERMISSIONS{ErrorModule::Kernel, 108};
diff --git a/src/core/hle/kernel/handle_table.cpp b/src/core/hle/kernel/handle_table.cpp
index c8acde5b1..bdfaa977f 100644
--- a/src/core/hle/kernel/handle_table.cpp
+++ b/src/core/hle/kernel/handle_table.cpp
@@ -14,32 +14,47 @@
namespace Kernel {
namespace {
constexpr u16 GetSlot(Handle handle) {
- return handle >> 15;
+ return static_cast<u16>(handle >> 15);
}
constexpr u16 GetGeneration(Handle handle) {
- return handle & 0x7FFF;
+ return static_cast<u16>(handle & 0x7FFF);
}
} // Anonymous namespace
HandleTable::HandleTable() {
- next_generation = 1;
Clear();
}
HandleTable::~HandleTable() = default;
+ResultCode HandleTable::SetSize(s32 handle_table_size) {
+ if (static_cast<u32>(handle_table_size) > MAX_COUNT) {
+ return ERR_OUT_OF_MEMORY;
+ }
+
+ // Values less than or equal to zero indicate to use the maximum allowable
+ // size for the handle table in the actual kernel, so we ignore the given
+ // value in that case, since we assume this by default unless this function
+ // is called.
+ if (handle_table_size > 0) {
+ table_size = static_cast<u16>(handle_table_size);
+ }
+
+ return RESULT_SUCCESS;
+}
+
ResultVal<Handle> HandleTable::Create(SharedPtr<Object> obj) {
DEBUG_ASSERT(obj != nullptr);
- u16 slot = next_free_slot;
- if (slot >= generations.size()) {
+ const u16 slot = next_free_slot;
+ if (slot >= table_size) {
LOG_ERROR(Kernel, "Unable to allocate Handle, too many slots in use.");
return ERR_HANDLE_TABLE_FULL;
}
next_free_slot = generations[slot];
- u16 generation = next_generation++;
+ const u16 generation = next_generation++;
// Overflow count so it fits in the 15 bits dedicated to the generation in the handle.
// Horizon OS uses zero to represent an invalid handle, so skip to 1.
@@ -64,10 +79,11 @@ ResultVal<Handle> HandleTable::Duplicate(Handle handle) {
}
ResultCode HandleTable::Close(Handle handle) {
- if (!IsValid(handle))
+ if (!IsValid(handle)) {
return ERR_INVALID_HANDLE;
+ }
- u16 slot = GetSlot(handle);
+ const u16 slot = GetSlot(handle);
objects[slot] = nullptr;
@@ -77,10 +93,10 @@ ResultCode HandleTable::Close(Handle handle) {
}
bool HandleTable::IsValid(Handle handle) const {
- std::size_t slot = GetSlot(handle);
- u16 generation = GetGeneration(handle);
+ const std::size_t slot = GetSlot(handle);
+ const u16 generation = GetGeneration(handle);
- return slot < MAX_COUNT && objects[slot] != nullptr && generations[slot] == generation;
+ return slot < table_size && objects[slot] != nullptr && generations[slot] == generation;
}
SharedPtr<Object> HandleTable::GetGeneric(Handle handle) const {
@@ -97,7 +113,7 @@ SharedPtr<Object> HandleTable::GetGeneric(Handle handle) const {
}
void HandleTable::Clear() {
- for (u16 i = 0; i < MAX_COUNT; ++i) {
+ for (u16 i = 0; i < table_size; ++i) {
generations[i] = i + 1;
objects[i] = nullptr;
}
diff --git a/src/core/hle/kernel/handle_table.h b/src/core/hle/kernel/handle_table.h
index 89a3bc740..44901391b 100644
--- a/src/core/hle/kernel/handle_table.h
+++ b/src/core/hle/kernel/handle_table.h
@@ -50,6 +50,20 @@ public:
~HandleTable();
/**
+ * Sets the number of handles that may be in use at one time
+ * for this handle table.
+ *
+ * @param handle_table_size The desired size to limit the handle table to.
+ *
+ * @returns an error code indicating if initialization was successful.
+ * If initialization was not successful, then ERR_OUT_OF_MEMORY
+ * will be returned.
+ *
+ * @pre handle_table_size must be within the range [0, 1024]
+ */
+ ResultCode SetSize(s32 handle_table_size);
+
+ /**
* Allocates a handle for the given object.
* @return The created Handle or one of the following errors:
* - `ERR_HANDLE_TABLE_FULL`: the maximum number of handles has been exceeded.
@@ -104,13 +118,20 @@ private:
std::array<u16, MAX_COUNT> generations;
/**
+ * The limited size of the handle table. This can be specified by process
+ * capabilities in order to restrict the overall number of handles that
+ * can be created in a process instance
+ */
+ u16 table_size = static_cast<u16>(MAX_COUNT);
+
+ /**
* Global counter of the number of created handles. Stored in `generations` when a handle is
* created, and wraps around to 1 when it hits 0x8000.
*/
- u16 next_generation;
+ u16 next_generation = 1;
/// Head of the free slots linked list.
- u16 next_free_slot;
+ u16 next_free_slot = 0;
};
} // namespace Kernel
diff --git a/src/core/hle/kernel/process.cpp b/src/core/hle/kernel/process.cpp
index c5aa19afa..8009150e0 100644
--- a/src/core/hle/kernel/process.cpp
+++ b/src/core/hle/kernel/process.cpp
@@ -99,7 +99,13 @@ ResultCode Process::LoadFromMetadata(const FileSys::ProgramMetadata& metadata) {
vm_manager.Reset(metadata.GetAddressSpaceType());
const auto& caps = metadata.GetKernelCapabilities();
- return capabilities.InitializeForUserProcess(caps.data(), caps.size(), vm_manager);
+ const auto capability_init_result =
+ capabilities.InitializeForUserProcess(caps.data(), caps.size(), vm_manager);
+ if (capability_init_result.IsError()) {
+ return capability_init_result;
+ }
+
+ return handle_table.SetSize(capabilities.GetHandleTableSize());
}
void Process::Run(VAddr entry_point, s32 main_thread_priority, u32 stack_size) {
diff --git a/src/core/hle/kernel/process_capability.cpp b/src/core/hle/kernel/process_capability.cpp
index 3a2164b25..583e35b79 100644
--- a/src/core/hle/kernel/process_capability.cpp
+++ b/src/core/hle/kernel/process_capability.cpp
@@ -96,7 +96,7 @@ void ProcessCapabilities::InitializeForMetadatalessProcess() {
interrupt_capabilities.set();
// Allow using the maximum possible amount of handles
- handle_table_size = static_cast<u32>(HandleTable::MAX_COUNT);
+ handle_table_size = static_cast<s32>(HandleTable::MAX_COUNT);
// Allow all debugging capabilities.
is_debuggable = true;
@@ -337,7 +337,7 @@ ResultCode ProcessCapabilities::HandleHandleTableFlags(u32 flags) {
return ERR_RESERVED_VALUE;
}
- handle_table_size = (flags >> 16) & 0x3FF;
+ handle_table_size = static_cast<s32>((flags >> 16) & 0x3FF);
return RESULT_SUCCESS;
}
diff --git a/src/core/hle/kernel/process_capability.h b/src/core/hle/kernel/process_capability.h
index fbc8812a3..5cdd80747 100644
--- a/src/core/hle/kernel/process_capability.h
+++ b/src/core/hle/kernel/process_capability.h
@@ -156,7 +156,7 @@ public:
}
/// Gets the number of total allowable handles for the process' handle table.
- u32 GetHandleTableSize() const {
+ s32 GetHandleTableSize() const {
return handle_table_size;
}
@@ -252,7 +252,7 @@ private:
u64 core_mask = 0;
u64 priority_mask = 0;
- u32 handle_table_size = 0;
+ s32 handle_table_size = 0;
u32 kernel_version = 0;
ProgramType program_type = ProgramType::SysModule;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-23 03:24:47 +0100