mirror of
https://github.com/dart-lang/sdk
synced 2024-09-05 00:13:50 +00:00
Reland "[vm/ffi] Disallow Pointer
s and structs in finalizers and expandos"
`Dart_NewWeakPersistentHandle` and `Dart_NewFinalizableHandle` in `dart_api.h` do no longer accept `Pointer`s and subtypes of `Struct`s as values passed in to the `object` parameter. Expandos no longer accept `Pointer`s and subtypes of `Struct`s as values passed in to the `object` parameter. Cleans up unused object_store->ffi_struct_class. Closes: https://github.com/dart-lang/sdk/issues/45071 Breaking change: https://github.com/dart-lang/sdk/issues/45072 TEST=vm/cc/DartAPI_FinalizableHandleErrors TEST=vm/cc/DartAPI_WeakPersistentHandleErrors TEST=tests/ffi(_2)/expando_test.dart Change-Id: I9af6d0173db60614091068c218391f73756c135f Cq-Include-Trybots: luci.dart.try:vm-kernel-precomp-linux-debug-x64-try Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/195061 Reviewed-by: Martin Kustermann <kustermann@google.com> Commit-Queue: Daco Harkes <dacoharkes@google.com>
This commit is contained in:
parent
8800decca4
commit
3f0ad61daa
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@ -8,6 +8,15 @@
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daylight saving changes that are not precisely one hour.
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daylight saving changes that are not precisely one hour.
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(No change on the Web which uses the JavaScript `Date` object.)
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(No change on the Web which uses the JavaScript `Date` object.)
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### Dart VM
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* **Breaking Change** [#45071][]: `Dart_NewWeakPersistentHandle`'s and
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`Dart_NewFinalizableHandle`'s `object` parameter no longer accepts
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`Pointer`s and subtypes of `Struct`. Expandos no longer accept
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`Pointer`s and subtypes of `Struct`s.
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[#45071]: https://github.com/dart-lang/sdk/issues/45071
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## 2.13.0
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## 2.13.0
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### Language
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### Language
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@ -834,7 +834,9 @@ class _FfiUseSiteTransformer extends FfiTransformer {
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: null;
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: null;
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}
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}
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if (!nativeTypesClasses.contains(klass) && klass != arrayClass) {
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if (!nativeTypesClasses.contains(klass) &&
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klass != arrayClass &&
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klass != arraySizeClass) {
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for (final parent in nativeTypesClasses) {
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for (final parent in nativeTypesClasses) {
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if (hierarchy.isSubtypeOf(klass, parent)) {
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if (hierarchy.isSubtypeOf(klass, parent)) {
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return parent;
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return parent;
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@ -475,7 +475,7 @@ DART_EXPORT void Dart_DeletePersistentHandle(Dart_PersistentHandle object);
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*
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*
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* Requires there to be a current isolate.
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* Requires there to be a current isolate.
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*
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*
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* \param object An object.
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* \param object An object with identity.
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* \param peer A pointer to a native object or NULL. This value is
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* \param peer A pointer to a native object or NULL. This value is
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* provided to callback when it is invoked.
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* provided to callback when it is invoked.
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* \param external_allocation_size The number of externally allocated
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* \param external_allocation_size The number of externally allocated
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@ -531,7 +531,7 @@ DART_EXPORT void Dart_UpdateExternalSize(Dart_WeakPersistentHandle object,
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*
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*
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* Requires there to be a current isolate.
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* Requires there to be a current isolate.
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*
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*
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* \param object An object.
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* \param object An object with identity.
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* \param peer A pointer to a native object or NULL. This value is
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* \param peer A pointer to a native object or NULL. This value is
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* provided to callback when it is invoked.
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* provided to callback when it is invoked.
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* \param external_allocation_size The number of externally allocated
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* \param external_allocation_size The number of externally allocated
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@ -991,6 +991,23 @@ DART_EXPORT void Dart_SetPersistentHandle(Dart_PersistentHandle obj1,
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obj1_ref->set_ptr(obj2_ref);
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obj1_ref->set_ptr(obj2_ref);
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}
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}
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// TODO(https://dartbug.com/38491): Reject Unions here as well.
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static bool IsFfiStruct(Thread* T, const Object& obj) {
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if (obj.IsNull()) {
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return false;
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}
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// CFE guarantees we can only have direct subclasses of `Struct`
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// (no implementations or indirect subclasses are allowed).
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const auto& klass = Class::Handle(Z, obj.clazz());
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const auto& super_klass = Class::Handle(Z, klass.SuperClass());
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if (super_klass.Name() != Symbols::Struct().ptr()) {
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return false;
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}
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const auto& library = Library::Handle(Z, super_klass.library());
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return library.url() == Symbols::DartFfi().ptr();
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}
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static Dart_WeakPersistentHandle AllocateWeakPersistentHandle(
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static Dart_WeakPersistentHandle AllocateWeakPersistentHandle(
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Thread* thread,
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Thread* thread,
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const Object& ref,
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const Object& ref,
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@ -1000,6 +1017,13 @@ static Dart_WeakPersistentHandle AllocateWeakPersistentHandle(
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if (!ref.ptr()->IsHeapObject()) {
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if (!ref.ptr()->IsHeapObject()) {
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return NULL;
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return NULL;
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}
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}
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if (ref.IsPointer()) {
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return NULL;
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}
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if (IsFfiStruct(thread, ref)) {
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return NULL;
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}
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FinalizablePersistentHandle* finalizable_ref =
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FinalizablePersistentHandle* finalizable_ref =
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FinalizablePersistentHandle::New(thread->isolate_group(), ref, peer,
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FinalizablePersistentHandle::New(thread->isolate_group(), ref, peer,
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callback, external_allocation_size,
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callback, external_allocation_size,
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@ -1008,16 +1032,14 @@ static Dart_WeakPersistentHandle AllocateWeakPersistentHandle(
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}
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}
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static Dart_WeakPersistentHandle AllocateWeakPersistentHandle(
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static Dart_WeakPersistentHandle AllocateWeakPersistentHandle(
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Thread* thread,
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Thread* T,
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Dart_Handle object,
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Dart_Handle object,
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void* peer,
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void* peer,
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intptr_t external_allocation_size,
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intptr_t external_allocation_size,
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Dart_HandleFinalizer callback) {
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Dart_HandleFinalizer callback) {
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REUSABLE_OBJECT_HANDLESCOPE(thread);
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const auto& ref = Object::Handle(Z, Api::UnwrapHandle(object));
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Object& ref = thread->ObjectHandle();
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return AllocateWeakPersistentHandle(T, ref, peer, external_allocation_size,
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ref = Api::UnwrapHandle(object);
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callback);
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return AllocateWeakPersistentHandle(thread, ref, peer,
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external_allocation_size, callback);
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}
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}
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static Dart_FinalizableHandle AllocateFinalizableHandle(
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static Dart_FinalizableHandle AllocateFinalizableHandle(
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@ -1029,6 +1051,12 @@ static Dart_FinalizableHandle AllocateFinalizableHandle(
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if (!ref.ptr()->IsHeapObject()) {
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if (!ref.ptr()->IsHeapObject()) {
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return NULL;
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return NULL;
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}
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}
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if (ref.IsPointer()) {
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return NULL;
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}
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if (IsFfiStruct(thread, ref)) {
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return NULL;
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}
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FinalizablePersistentHandle* finalizable_ref =
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FinalizablePersistentHandle* finalizable_ref =
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FinalizablePersistentHandle::New(thread->isolate_group(), ref, peer,
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FinalizablePersistentHandle::New(thread->isolate_group(), ref, peer,
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@ -1038,15 +1066,13 @@ static Dart_FinalizableHandle AllocateFinalizableHandle(
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}
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}
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static Dart_FinalizableHandle AllocateFinalizableHandle(
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static Dart_FinalizableHandle AllocateFinalizableHandle(
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Thread* thread,
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Thread* T,
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Dart_Handle object,
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Dart_Handle object,
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void* peer,
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void* peer,
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intptr_t external_allocation_size,
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intptr_t external_allocation_size,
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Dart_HandleFinalizer callback) {
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Dart_HandleFinalizer callback) {
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REUSABLE_OBJECT_HANDLESCOPE(thread);
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const auto& ref = Object::Handle(Z, Api::UnwrapHandle(object));
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Object& ref = thread->ObjectHandle();
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return AllocateFinalizableHandle(T, ref, peer, external_allocation_size,
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ref = Api::UnwrapHandle(object);
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return AllocateFinalizableHandle(thread, ref, peer, external_allocation_size,
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callback);
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callback);
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}
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}
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@ -1055,15 +1081,13 @@ Dart_NewWeakPersistentHandle(Dart_Handle object,
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void* peer,
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void* peer,
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intptr_t external_allocation_size,
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intptr_t external_allocation_size,
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Dart_HandleFinalizer callback) {
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Dart_HandleFinalizer callback) {
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Thread* thread = Thread::Current();
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DARTSCOPE(Thread::Current());
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CHECK_ISOLATE(thread->isolate());
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if (callback == NULL) {
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if (callback == NULL) {
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return NULL;
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return NULL;
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}
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}
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TransitionNativeToVM transition(thread);
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return AllocateWeakPersistentHandle(thread, object, peer,
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return AllocateWeakPersistentHandle(T, object, peer, external_allocation_size,
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external_allocation_size, callback);
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callback);
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}
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}
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DART_EXPORT Dart_FinalizableHandle
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DART_EXPORT Dart_FinalizableHandle
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@ -1071,14 +1095,13 @@ Dart_NewFinalizableHandle(Dart_Handle object,
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void* peer,
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void* peer,
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intptr_t external_allocation_size,
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intptr_t external_allocation_size,
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Dart_HandleFinalizer callback) {
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Dart_HandleFinalizer callback) {
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Thread* thread = Thread::Current();
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DARTSCOPE(Thread::Current());
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CHECK_ISOLATE(thread->isolate());
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if (callback == nullptr) {
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if (callback == nullptr) {
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return nullptr;
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return nullptr;
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}
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}
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TransitionNativeToVM transition(thread);
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return AllocateFinalizableHandle(thread, object, peer,
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return AllocateFinalizableHandle(T, object, peer, external_allocation_size,
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external_allocation_size, callback);
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callback);
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}
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}
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DART_EXPORT void Dart_UpdateExternalSize(Dart_WeakPersistentHandle object,
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DART_EXPORT void Dart_UpdateExternalSize(Dart_WeakPersistentHandle object,
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@ -3368,6 +3368,35 @@ TEST_CASE(DartAPI_WeakPersistentHandleErrors) {
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Dart_NewWeakPersistentHandle(obj2, NULL, 0, NopCallback);
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Dart_NewWeakPersistentHandle(obj2, NULL, 0, NopCallback);
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EXPECT_EQ(ref2, static_cast<void*>(NULL));
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EXPECT_EQ(ref2, static_cast<void*>(NULL));
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// Pointer object.
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Dart_Handle ffi_lib = Dart_LookupLibrary(NewString("dart:ffi"));
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Dart_Handle pointer_type =
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Dart_GetNonNullableType(ffi_lib, NewString("Pointer"), 0, NULL);
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Dart_Handle obj3 = Dart_Allocate(pointer_type);
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EXPECT_VALID(obj3);
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Dart_WeakPersistentHandle ref3 =
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Dart_NewWeakPersistentHandle(obj3, nullptr, 0, FinalizableHandleCallback);
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EXPECT_EQ(ref3, static_cast<void*>(nullptr));
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// Subtype of Struct object.
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const char* kScriptChars = R"(
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import 'dart:ffi';
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class MyStruct extends Struct {
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external Pointer notEmpty;
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}
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)";
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Dart_Handle lib = TestCase::LoadTestScript(kScriptChars, NULL);
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Dart_Handle my_struct_type =
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Dart_GetNonNullableType(lib, NewString("MyStruct"), 0, NULL);
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Dart_Handle obj4 = Dart_Allocate(my_struct_type);
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EXPECT_VALID(obj4);
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Dart_WeakPersistentHandle ref4 =
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Dart_NewWeakPersistentHandle(obj4, nullptr, 0, FinalizableHandleCallback);
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EXPECT_EQ(ref4, static_cast<void*>(nullptr));
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|
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// TODO(https://dartbug.com/38491): Reject Unions here as well.
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|
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Dart_ExitScope();
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Dart_ExitScope();
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}
|
}
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|
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|
@ -3388,6 +3417,33 @@ TEST_CASE(DartAPI_FinalizableHandleErrors) {
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Dart_NewFinalizableHandle(obj2, nullptr, 0, FinalizableHandleCallback);
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Dart_NewFinalizableHandle(obj2, nullptr, 0, FinalizableHandleCallback);
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EXPECT_EQ(ref2, static_cast<void*>(nullptr));
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EXPECT_EQ(ref2, static_cast<void*>(nullptr));
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|
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// Pointer object.
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|
Dart_Handle ffi_lib = Dart_LookupLibrary(NewString("dart:ffi"));
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|
Dart_Handle pointer_type =
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Dart_GetNonNullableType(ffi_lib, NewString("Pointer"), 0, NULL);
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|
Dart_Handle obj3 = Dart_Allocate(pointer_type);
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|
EXPECT_VALID(obj3);
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|
Dart_FinalizableHandle ref3 =
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|
Dart_NewFinalizableHandle(obj3, nullptr, 0, FinalizableHandleCallback);
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EXPECT_EQ(ref3, static_cast<void*>(nullptr));
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|
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// Subtype of Struct object.
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const char* kScriptChars = R"(
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import 'dart:ffi';
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|
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class MyStruct extends Struct {
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|
external Pointer notEmpty;
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|
}
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)";
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|
Dart_Handle lib = TestCase::LoadTestScript(kScriptChars, NULL);
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|
Dart_Handle my_struct_type =
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|
Dart_GetNonNullableType(lib, NewString("MyStruct"), 0, NULL);
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|
Dart_Handle obj4 = Dart_Allocate(my_struct_type);
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|
EXPECT_VALID(obj4);
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|
Dart_FinalizableHandle ref4 =
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|
Dart_NewFinalizableHandle(obj4, nullptr, 0, FinalizableHandleCallback);
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|
EXPECT_EQ(ref4, static_cast<void*>(nullptr));
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|
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Dart_ExitScope();
|
Dart_ExitScope();
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}
|
}
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|
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|
|
|
@ -1367,7 +1367,8 @@ void KernelLoader::LoadLibraryImportsAndExports(Library* library,
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"runtime");
|
"runtime");
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}
|
}
|
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if (!Api::IsFfiEnabled() &&
|
if (!Api::IsFfiEnabled() &&
|
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target_library.url() == Symbols::DartFfi().ptr()) {
|
target_library.url() == Symbols::DartFfi().ptr() &&
|
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|
library->url() != Symbols::DartCore().ptr()) {
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H.ReportError(
|
H.ReportError(
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"import of dart:ffi is not supported in the current Dart runtime");
|
"import of dart:ffi is not supported in the current Dart runtime");
|
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}
|
}
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|
|
|
@ -236,7 +236,6 @@ class ObjectPointerVisitor;
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RW(GrowableObjectArray, ffi_callback_functions) \
|
RW(GrowableObjectArray, ffi_callback_functions) \
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RW(Class, ffi_pointer_class) \
|
RW(Class, ffi_pointer_class) \
|
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RW(Class, ffi_native_type_class) \
|
RW(Class, ffi_native_type_class) \
|
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RW(Class, ffi_struct_class) \
|
|
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RW(Object, ffi_as_function_internal) \
|
RW(Object, ffi_as_function_internal) \
|
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// Please remember the last entry must be referred in the 'to' function below.
|
// Please remember the last entry must be referred in the 'to' function below.
|
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|
|
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|
|
|
@ -49,6 +49,8 @@ import "dart:collection"
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|
|
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import "dart:convert" show ascii, Encoding, json, latin1, utf8;
|
import "dart:convert" show ascii, Encoding, json, latin1, utf8;
|
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|
|
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|
import "dart:ffi" show Pointer, Struct;
|
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|
|
||||||
import "dart:isolate" show Isolate;
|
import "dart:isolate" show Isolate;
|
||||||
|
|
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import "dart:math" show Random;
|
import "dart:math" show Random;
|
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|
|
|
@ -140,9 +140,12 @@ class Expando<T> {
|
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if ((object == null) ||
|
if ((object == null) ||
|
||||||
(object is bool) ||
|
(object is bool) ||
|
||||||
(object is num) ||
|
(object is num) ||
|
||||||
(object is String)) {
|
(object is String) ||
|
||||||
|
(object is Pointer) ||
|
||||||
|
(object is Struct)) {
|
||||||
|
// TODO(https://dartbug.com/38491): Reject Unions here as well.
|
||||||
throw new ArgumentError.value(object,
|
throw new ArgumentError.value(object,
|
||||||
"Expandos are not allowed on strings, numbers, booleans or null");
|
"Expandos are not allowed on strings, numbers, booleans, null, Pointers or Structs.");
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
|
@ -6,7 +6,8 @@ part of dart.core;
|
||||||
|
|
||||||
/// An [Expando] allows adding new properties to objects.
|
/// An [Expando] allows adding new properties to objects.
|
||||||
///
|
///
|
||||||
/// Does not work on numbers, strings, booleans or `null`.
|
/// Does not work on numbers, strings, booleans, `null`, `dart:ffi` pointers
|
||||||
|
/// or `dart:ffi` structs.
|
||||||
///
|
///
|
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/// An `Expando` does not hold on to the added property value after an object
|
/// An `Expando` does not hold on to the added property value after an object
|
||||||
/// becomes inaccessible.
|
/// becomes inaccessible.
|
||||||
|
@ -38,13 +39,15 @@ class Expando<T extends Object> {
|
||||||
/// object. If the object hasn't been expanded, the method returns
|
/// object. If the object hasn't been expanded, the method returns
|
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/// `null`.
|
/// `null`.
|
||||||
///
|
///
|
||||||
/// The object must not be a number, a string or a boolean.
|
/// The object must not be a number, a string, a boolean, `null`, a
|
||||||
|
/// `dart:ffi` pointer, or a `dart:ffi` struct.
|
||||||
external T? operator [](Object object);
|
external T? operator [](Object object);
|
||||||
|
|
||||||
/// Sets the value of this [Expando]'s property on the given
|
/// Sets the value of this [Expando]'s property on the given
|
||||||
/// object. Properties can effectively be removed again by setting
|
/// object. Properties can effectively be removed again by setting
|
||||||
/// their value to `null`.
|
/// their value to `null`.
|
||||||
///
|
///
|
||||||
/// The object must not be a number, a string or a boolean.
|
/// The object must not be a number, a string, a boolean, `null`, a
|
||||||
|
/// `dart:ffi` pointer, or a `dart:ffi` struct.
|
||||||
external void operator []=(Object object, T? value);
|
external void operator []=(Object object, T? value);
|
||||||
}
|
}
|
||||||
|
|
|
@ -1,6 +1,9 @@
|
||||||
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
|
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
|
||||||
// for details. All rights reserved. Use of this source code is governed by a
|
// for details. All rights reserved. Use of this source code is governed by a
|
||||||
// BSD-style license that can be found in the LICENSE file.
|
// BSD-style license that can be found in the LICENSE file.
|
||||||
|
//
|
||||||
|
// VMOptions=--enable-ffi=true
|
||||||
|
// VMOptions=--enable-ffi=false
|
||||||
|
|
||||||
import "package:expect/expect.dart";
|
import "package:expect/expect.dart";
|
||||||
|
|
||||||
|
|
|
@ -1,6 +1,9 @@
|
||||||
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
|
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
|
||||||
// for details. All rights reserved. Use of this source code is governed by a
|
// for details. All rights reserved. Use of this source code is governed by a
|
||||||
// BSD-style license that can be found in the LICENSE file.
|
// BSD-style license that can be found in the LICENSE file.
|
||||||
|
//
|
||||||
|
// VMOptions=--enable-ffi=true
|
||||||
|
// VMOptions=--enable-ffi=false
|
||||||
|
|
||||||
import "package:expect/expect.dart";
|
import "package:expect/expect.dart";
|
||||||
|
|
||||||
|
|
43
tests/ffi/expando_test.dart
Normal file
43
tests/ffi/expando_test.dart
Normal file
|
@ -0,0 +1,43 @@
|
||||||
|
// Copyright (c) 2021, the Dart project authors. Please see the AUTHORS file
|
||||||
|
// for details. All rights reserved. Use of this source code is governed by a
|
||||||
|
// BSD-style license that can be found in the LICENSE file.
|
||||||
|
//
|
||||||
|
// Dart test program for testing dart:ffi primitive data pointers.
|
||||||
|
//
|
||||||
|
// SharedObjects=ffi_test_functions
|
||||||
|
|
||||||
|
import 'dart:ffi';
|
||||||
|
|
||||||
|
import "package:expect/expect.dart";
|
||||||
|
|
||||||
|
void main() {
|
||||||
|
testPointer();
|
||||||
|
testStruct();
|
||||||
|
}
|
||||||
|
|
||||||
|
Expando<int> expando = Expando('myExpando');
|
||||||
|
|
||||||
|
void testPointer() {
|
||||||
|
final pointer = Pointer<Int8>.fromAddress(0xdeadbeef);
|
||||||
|
Expect.throws(() {
|
||||||
|
expando[pointer];
|
||||||
|
});
|
||||||
|
Expect.throws(() {
|
||||||
|
expando[pointer] = 1234;
|
||||||
|
});
|
||||||
|
}
|
||||||
|
|
||||||
|
class MyStruct extends Struct {
|
||||||
|
external Pointer notEmpty;
|
||||||
|
}
|
||||||
|
|
||||||
|
void testStruct() {
|
||||||
|
final pointer = Pointer<MyStruct>.fromAddress(0xdeadbeef);
|
||||||
|
final struct = pointer.ref;
|
||||||
|
Expect.throws(() {
|
||||||
|
expando[struct];
|
||||||
|
});
|
||||||
|
Expect.throws(() {
|
||||||
|
expando[struct] = 1234;
|
||||||
|
});
|
||||||
|
}
|
43
tests/ffi_2/expando_test.dart
Normal file
43
tests/ffi_2/expando_test.dart
Normal file
|
@ -0,0 +1,43 @@
|
||||||
|
// Copyright (c) 2021, the Dart project authors. Please see the AUTHORS file
|
||||||
|
// for details. All rights reserved. Use of this source code is governed by a
|
||||||
|
// BSD-style license that can be found in the LICENSE file.
|
||||||
|
//
|
||||||
|
// Dart test program for testing dart:ffi primitive data pointers.
|
||||||
|
//
|
||||||
|
// SharedObjects=ffi_test_functions
|
||||||
|
|
||||||
|
import 'dart:ffi';
|
||||||
|
|
||||||
|
import "package:expect/expect.dart";
|
||||||
|
|
||||||
|
void main() {
|
||||||
|
testPointer();
|
||||||
|
testStruct();
|
||||||
|
}
|
||||||
|
|
||||||
|
Expando<int> expando = Expando('myExpando');
|
||||||
|
|
||||||
|
void testPointer() {
|
||||||
|
final pointer = Pointer<Int8>.fromAddress(0xdeadbeef);
|
||||||
|
Expect.throws(() {
|
||||||
|
expando[pointer];
|
||||||
|
});
|
||||||
|
Expect.throws(() {
|
||||||
|
expando[pointer] = 1234;
|
||||||
|
});
|
||||||
|
}
|
||||||
|
|
||||||
|
class MyStruct extends Struct {
|
||||||
|
Pointer notEmpty;
|
||||||
|
}
|
||||||
|
|
||||||
|
void testStruct() {
|
||||||
|
final pointer = Pointer<MyStruct>.fromAddress(0xdeadbeef);
|
||||||
|
final struct = pointer.ref;
|
||||||
|
Expect.throws(() {
|
||||||
|
expando[struct];
|
||||||
|
});
|
||||||
|
Expect.throws(() {
|
||||||
|
expando[struct] = 1234;
|
||||||
|
});
|
||||||
|
}
|
Loading…
Reference in a new issue