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Thread: Added priority range checking to svcSetThreadPriority and removed priority clamping code from Thread::SetPriority.

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Subv
2017-01-11 12:08:10 -05:00
parent 5ddc2e09b1
commit f2f2572fed
3 changed files with 18 additions and 18 deletions
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2
src/core/hle/kernel/resource_limit.cpp
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@@ -62,6 +62,8 @@ s32 ResourceLimit::GetCurrentResourceValue(u32 resource) const {
s32 ResourceLimit::GetMaxResourceValue(u32 resource) const {
switch (resource) {
case PRIORITY:
return max_priority;
case COMMIT:
return max_commit;
case THREAD:

20
src/core/hle/kernel/thread.cpp
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@@ -444,25 +444,9 @@ ResultVal<SharedPtr<Thread>> Thread::Create(std::string name, VAddr entry_point,
return MakeResult<SharedPtr<Thread>>(std::move(thread));
}
// TODO(peachum): Remove this. Range checking should be done, and an appropriate error should be
// returned.
static void ClampPriority(const Thread* thread, s32* priority) {
if (*priority < THREADPRIO_HIGHEST || *priority > THREADPRIO_LOWEST) {
DEBUG_ASSERT_MSG(
false, "Application passed an out of range priority. An error should be returned.");
s32 new_priority = MathUtil::Clamp<s32>(*priority, THREADPRIO_HIGHEST, THREADPRIO_LOWEST);
LOG_WARNING(Kernel_SVC, "(name=%s): invalid priority=%d, clamping to %d",
thread->name.c_str(), *priority, new_priority);
// TODO(bunnei): Clamping to a valid priority is not necessarily correct behavior... Confirm
// validity of this
*priority = new_priority;
}
}
void Thread::SetPriority(s32 priority) {
ClampPriority(this, &priority);
ASSERT_MSG(priority <= THREADPRIO_LOWEST && priority >= THREADPRIO_HIGHEST,
"Invalid priority value.");
// If thread was ready, adjust queues
if (status == THREADSTATUS_READY)
ready_queue.move(this, current_priority, priority);

14
src/core/hle/svc.cpp
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@@ -598,10 +598,24 @@ static ResultCode GetThreadPriority(s32* priority, Kernel::Handle handle) {
/// Sets the priority for the specified thread
static ResultCode SetThreadPriority(Kernel::Handle handle, s32 priority) {
if (priority > THREADPRIO_LOWEST) {
return ResultCode(ErrorDescription::OutOfRange, ErrorModule::OS,
ErrorSummary::InvalidArgument, ErrorLevel::Usage);
}
SharedPtr<Kernel::Thread> thread = Kernel::g_handle_table.Get<Kernel::Thread>(handle);
if (thread == nullptr)
return ERR_INVALID_HANDLE;
using Kernel::ResourceLimit;
// Note: The kernel uses the current process's resource limit instead of
// the one from the thread owner's resource limit.
Kernel::SharedPtr<ResourceLimit>& resource_limit = Kernel::g_current_process->resource_limit;
if (resource_limit->GetMaxResourceValue(Kernel::ResourceTypes::PRIORITY) > priority) {
return ResultCode(ErrorDescription::NotAuthorized, ErrorModule::OS,
ErrorSummary::WrongArgument, ErrorLevel::Permanent);
}
thread->SetPriority(priority);
thread->UpdatePriority();