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kern: implement new default application system resource field in KProcess

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This commit is contained in:
Michael Scire 2023-10-11 09:13:59 -07:00
parent c9ff97f041
commit 4805a8cfd7
2 changed files with 70 additions and 26 deletions
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81
libraries/libmesosphere/source/kern_k_process.cpp
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@ -263,28 +263,47 @@ namespace ams::kern {
MESOSPHERE_ASSERT(res_limit != nullptr);
MESOSPHERE_ABORT_UNLESS((params.code_num_pages * PageSize) / PageSize == static_cast<size_t>(params.code_num_pages));
/* Determine is application. */
const bool is_app = (params.flags & ams::svc::CreateProcessFlag_IsApplication) != 0;
/* Set members. */
m_memory_pool = pool;
m_resource_limit = res_limit;
m_system_resource = std::addressof(is_app ? Kernel::GetApplicationSystemResource() : Kernel::GetSystemSystemResource());
m_is_immortal = immortal;
m_memory_pool = pool;
m_resource_limit = res_limit;
m_is_default_application_system_resource = false;
m_is_immortal = immortal;
/* Open reference to our system resource. */
m_system_resource->Open();
/* Setup our system resource. */
if (const size_t system_resource_num_pages = params.system_resource_num_pages; system_resource_num_pages != 0) {
/* Create a secure system resource. */
KSecureSystemResource *secure_resource = KSecureSystemResource::Create();
R_UNLESS(secure_resource != nullptr, svc::ResultOutOfResource());
ON_RESULT_FAILURE { secure_resource->Close(); };
/* Initialize the secure resource. */
R_TRY(secure_resource->Initialize(system_resource_num_pages * PageSize, m_resource_limit, m_memory_pool));
/* Set our system resource. */
m_system_resource = secure_resource;
} else {
/* Use the system-wide system resource. */
const bool is_app = (params.flags & ams::svc::CreateProcessFlag_IsApplication);
m_system_resource = std::addressof(is_app ? Kernel::GetApplicationSystemResource() : Kernel::GetSystemSystemResource());
m_is_default_application_system_resource = is_app;
/* Open reference to the system resource. */
m_system_resource->Open();
}
/* Ensure we clean up our secure resource, if we fail. */
ON_RESULT_FAILURE { m_system_resource->Close(); };
/* Setup page table. */
/* NOTE: Nintendo passes process ID despite not having set it yet. */
/* This goes completely unused, but even so... */
{
const auto as_type = static_cast<ams::svc::CreateProcessFlag>(params.flags & ams::svc::CreateProcessFlag_AddressSpaceMask);
const bool enable_aslr = (params.flags & ams::svc::CreateProcessFlag_EnableAslr) != 0;
const bool enable_das_merge = (params.flags & ams::svc::CreateProcessFlag_DisableDeviceAddressSpaceMerge) == 0;
R_TRY(m_page_table.Initialize(as_type, enable_aslr, enable_das_merge, !enable_aslr, pool, params.code_address, params.code_num_pages * PageSize, m_system_resource, res_limit));
}
ON_RESULT_FAILURE { m_page_table.Finalize(); };
ON_RESULT_FAILURE_2 { m_page_table.Finalize(); };
/* Ensure we can insert the code region. */
R_UNLESS(m_page_table.CanContain(params.code_address, params.code_num_pages * PageSize, KMemoryState_Code), svc::ResultInvalidMemoryRegion());
@ -315,9 +334,10 @@ namespace ams::kern {
MESOSPHERE_ASSERT(res_limit != nullptr);
/* Set pool and resource limit. */
m_memory_pool = pool;
m_resource_limit = res_limit;
m_is_immortal = false;
m_memory_pool = pool;
m_resource_limit = res_limit;
m_is_default_application_system_resource = false;
m_is_immortal = false;
/* Get the memory sizes. */
const size_t code_num_pages = params.code_num_pages;
@ -348,6 +368,8 @@ namespace ams::kern {
const bool is_app = (params.flags & ams::svc::CreateProcessFlag_IsApplication);
m_system_resource = std::addressof(is_app ? Kernel::GetApplicationSystemResource() : Kernel::GetSystemSystemResource());
m_is_default_application_system_resource = is_app;
/* Open reference to the system resource. */
m_system_resource->Open();
}
@ -356,8 +378,6 @@ namespace ams::kern {
ON_RESULT_FAILURE { m_system_resource->Close(); };
/* Setup page table. */
/* NOTE: Nintendo passes process ID despite not having set it yet. */
/* This goes completely unused, but even so... */
{
const auto as_type = static_cast<ams::svc::CreateProcessFlag>(params.flags & ams::svc::CreateProcessFlag_AddressSpaceMask);
const bool enable_aslr = (params.flags & ams::svc::CreateProcessFlag_EnableAslr) != 0;
@ -848,7 +868,7 @@ namespace ams::kern {
size_t KProcess::GetUsedUserPhysicalMemorySize() const {
const size_t norm_size = m_page_table.GetNormalMemorySize();
const size_t other_size = m_code_size + m_main_thread_stack_size;
const size_t sec_size = m_system_resource->IsSecureResource() ? static_cast<KSecureSystemResource *>(m_system_resource)->CalculateRequiredSecureMemorySize() : 0;
const size_t sec_size = this->GetRequiredSecureMemorySizeNonDefault();
return norm_size + other_size + sec_size;
}
@ -856,13 +876,20 @@ namespace ams::kern {
size_t KProcess::GetTotalUserPhysicalMemorySize() const {
/* Get the amount of free and used size. */
const size_t free_size = m_resource_limit->GetFreeValue(ams::svc::LimitableResource_PhysicalMemoryMax);
const size_t used_size = this->GetUsedUserPhysicalMemorySize();
const size_t max_size = m_max_process_memory;
/* Determine used size. */
/* NOTE: This does *not* check this->IsDefaultApplicationSystemResource(), unlike GetUsedUserPhysicalMemorySize(). */
const size_t norm_size = m_page_table.GetNormalMemorySize();
const size_t other_size = m_code_size + m_main_thread_stack_size;
const size_t sec_size = this->GetRequiredSecureMemorySize();
const size_t used_size = norm_size + other_size + sec_size;
/* NOTE: These function calls will recalculate, introducing a race...it is unclear why Nintendo does it this way. */
if (used_size + free_size > max_size) {
return max_size;
} else {
return free_size + used_size;
return free_size + this->GetUsedUserPhysicalMemorySize();
}
}
@ -876,14 +903,20 @@ namespace ams::kern {
size_t KProcess::GetTotalNonSystemUserPhysicalMemorySize() const {
/* Get the amount of free and used size. */
const size_t free_size = m_resource_limit->GetFreeValue(ams::svc::LimitableResource_PhysicalMemoryMax);
const size_t used_size = this->GetUsedUserPhysicalMemorySize();
const size_t sec_size = m_system_resource->IsSecureResource() ? static_cast<KSecureSystemResource *>(m_system_resource)->CalculateRequiredSecureMemorySize() : 0;
const size_t max_size = m_max_process_memory;
/* Determine used size. */
/* NOTE: This does *not* check this->IsDefaultApplicationSystemResource(), unlike GetUsedUserPhysicalMemorySize(). */
const size_t norm_size = m_page_table.GetNormalMemorySize();
const size_t other_size = m_code_size + m_main_thread_stack_size;
const size_t sec_size = this->GetRequiredSecureMemorySize();
const size_t used_size = norm_size + other_size + sec_size;
/* NOTE: These function calls will recalculate, introducing a race...it is unclear why Nintendo does it this way. */
if (used_size + free_size > max_size) {
return max_size - sec_size;
return max_size - this->GetRequiredSecureMemorySizeNonDefault();
} else {
return free_size + used_size - sec_size;
return free_size + this->GetUsedNonSystemUserPhysicalMemorySize();
}
}