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Code Issues Releases Activity

kern: add new checks to SetThreadPriority/CoreMask

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Michael Scire 2021-04-07 01:11:17 -07:00 committed by SciresM
parent 2fb258ca7e
commit 1b2cf173b3
2 changed files with 20 additions and 12 deletions
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10
libraries/libmesosphere/source/kern_k_thread.cpp
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@ -599,14 +599,16 @@ namespace ams::kern {
KScopedSchedulerLock sl;
MESOSPHERE_ASSERT(m_num_core_migration_disables >= 0);
/* If the core id is no-update magic, preserve the ideal core id. */
if (core_id == ams::svc::IdealCoreNoUpdate) {
/* If we're updating, set our ideal virtual core. */
if (core_id != ams::svc::IdealCoreNoUpdate) {
m_virtual_ideal_core_id = core_id;
} else {
/* Preserve our ideal core id. */
core_id = m_virtual_ideal_core_id;
R_UNLESS(((1ul << core_id) & v_affinity_mask) != 0, svc::ResultInvalidCombination());
}
/* Set the virtual core/affinity mask. */
m_virtual_ideal_core_id = core_id;
/* Set our affinity mask. */
m_virtual_affinity_mask = v_affinity_mask;
/* Translate the virtual core to a physical core. */

22
libraries/libmesosphere/source/svc/kern_svc_thread.cpp
View file

@ -132,14 +132,17 @@ namespace ams::kern::svc {
/* Get the current process. */
KProcess &process = GetCurrentProcess();
/* Validate the priority. */
R_UNLESS(ams::svc::HighestThreadPriority <= priority && priority <= ams::svc::LowestThreadPriority, svc::ResultInvalidPriority());
R_UNLESS(process.CheckThreadPriority(priority), svc::ResultInvalidPriority());
/* Get the thread from its handle. */
KScopedAutoObject thread = process.GetHandleTable().GetObject<KThread>(thread_handle);
R_UNLESS(thread.IsNotNull(), svc::ResultInvalidHandle());
/* Validate the thread is owned by the current process. */
R_UNLESS(thread->GetOwnerProcess() == GetCurrentProcessPointer(), svc::ResultInvalidHandle());
/* Validate the priority. */
R_UNLESS(ams::svc::HighestThreadPriority <= priority && priority <= ams::svc::LowestThreadPriority, svc::ResultInvalidPriority());
R_UNLESS(process.CheckThreadPriority(priority), svc::ResultInvalidPriority());
/* Set the thread priority. */
thread->SetBasePriority(priority);
return ResultSuccess();
@ -157,6 +160,13 @@ namespace ams::kern::svc {
}
Result SetThreadCoreMask(ams::svc::Handle thread_handle, int32_t core_id, uint64_t affinity_mask) {
/* Get the thread from its handle. */
KScopedAutoObject thread = GetCurrentProcess().GetHandleTable().GetObject<KThread>(thread_handle);
R_UNLESS(thread.IsNotNull(), svc::ResultInvalidHandle());
/* Validate the thread is owned by the current process. */
R_UNLESS(thread->GetOwnerProcess() == GetCurrentProcessPointer(), svc::ResultInvalidHandle());
/* Determine the core id/affinity mask. */
if (core_id == ams::svc::IdealCoreUseProcessValue) {
core_id = GetCurrentProcess().GetIdealCoreId();
@ -175,10 +185,6 @@ namespace ams::kern::svc {
}
}
/* Get the thread from its handle. */
KScopedAutoObject thread = GetCurrentProcess().GetHandleTable().GetObject<KThread>(thread_handle);
R_UNLESS(thread.IsNotNull(), svc::ResultInvalidHandle());
/* Set the core mask. */
R_TRY(thread->SetCoreMask(core_id, affinity_mask));