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-rw-r--r--libs/binder/Parcel.cpp130
-rw-r--r--libs/binder/include/binder/Parcel.h99
2 files changed, 132 insertions, 97 deletions
diff --git a/libs/binder/Parcel.cpp b/libs/binder/Parcel.cpp
index ee26997912..82ea5a3cd0 100644
--- a/libs/binder/Parcel.cpp
+++ b/libs/binder/Parcel.cpp
@@ -750,61 +750,37 @@ status_t Parcel::writeUtf8AsUtf16(const std::unique_ptr<std::string>& str) {
return writeUtf8AsUtf16(*str);
}
-namespace {
-
-template<typename T>
-status_t writeByteVectorInternal(Parcel* parcel, const std::vector<T>& val)
-{
- status_t status;
- if (val.size() > std::numeric_limits<int32_t>::max()) {
- status = BAD_VALUE;
- return status;
+status_t Parcel::writeByteVectorInternal(const int8_t* data, size_t size) {
+ if (size > std::numeric_limits<int32_t>::max()) {
+ return BAD_VALUE;
}
- status = parcel->writeInt32(val.size());
+ status_t status = writeInt32(size);
if (status != OK) {
return status;
}
- void* data = parcel->writeInplace(val.size());
- if (!data) {
- status = BAD_VALUE;
- return status;
- }
-
- memcpy(data, val.data(), val.size());
- return status;
-}
-
-template<typename T>
-status_t writeByteVectorInternalPtr(Parcel* parcel,
- const std::unique_ptr<std::vector<T>>& val)
-{
- if (!val) {
- return parcel->writeInt32(-1);
- }
-
- return writeByteVectorInternal(parcel, *val);
+ return write(data, size);
}
-} // namespace
-
status_t Parcel::writeByteVector(const std::vector<int8_t>& val) {
- return writeByteVectorInternal(this, val);
+ return writeByteVectorInternal(val.data(), val.size());
}
status_t Parcel::writeByteVector(const std::unique_ptr<std::vector<int8_t>>& val)
{
- return writeByteVectorInternalPtr(this, val);
+ if (!val) return writeInt32(-1);
+ return writeByteVectorInternal(val->data(), val->size());
}
status_t Parcel::writeByteVector(const std::vector<uint8_t>& val) {
- return writeByteVectorInternal(this, val);
+ return writeByteVectorInternal(reinterpret_cast<const int8_t*>(val.data()), val.size());
}
status_t Parcel::writeByteVector(const std::unique_ptr<std::vector<uint8_t>>& val)
{
- return writeByteVectorInternalPtr(this, val);
+ if (!val) return writeInt32(-1);
+ return writeByteVectorInternal(reinterpret_cast<const int8_t*>(val->data()), val->size());
}
status_t Parcel::writeInt32Vector(const std::vector<int32_t>& val)
@@ -1477,81 +1453,41 @@ restart_write:
return err;
}
-namespace {
-
-template<typename T>
-status_t readByteVectorInternal(const Parcel* parcel,
- std::vector<T>* val) {
- val->clear();
-
- int32_t size;
- status_t status = parcel->readInt32(&size);
-
- if (status != OK) {
- return status;
- }
-
- if (size < 0) {
- status = UNEXPECTED_NULL;
- return status;
+status_t Parcel::readByteVectorInternal(int8_t* data, size_t size) const {
+ if (size_t(size) > dataAvail()) {
+ return BAD_VALUE;
}
- if (size_t(size) > parcel->dataAvail()) {
- status = BAD_VALUE;
- return status;
- }
-
- T* data = const_cast<T*>(reinterpret_cast<const T*>(parcel->readInplace(size)));
- if (!data) {
- status = BAD_VALUE;
- return status;
- }
- val->reserve(size);
- val->insert(val->end(), data, data + size);
-
- return status;
+ return read(data, size);
}
-template<typename T>
-status_t readByteVectorInternalPtr(
- const Parcel* parcel,
- std::unique_ptr<std::vector<T>>* val) {
- const int32_t start = parcel->dataPosition();
- int32_t size;
- status_t status = parcel->readInt32(&size);
- val->reset();
-
- if (status != OK || size < 0) {
- return status;
- }
-
- parcel->setDataPosition(start);
- val->reset(new (std::nothrow) std::vector<T>());
-
- status = readByteVectorInternal(parcel, val->get());
-
- if (status != OK) {
- val->reset();
- }
-
- return status;
-}
-
-} // namespace
-
status_t Parcel::readByteVector(std::vector<int8_t>* val) const {
- return readByteVectorInternal(this, val);
+ if (status_t status = resizeOutVector(val); status != OK) return status;
+ return readByteVectorInternal(val->data(), val->size());
}
status_t Parcel::readByteVector(std::vector<uint8_t>* val) const {
- return readByteVectorInternal(this, val);
+ if (status_t status = resizeOutVector(val); status != OK) return status;
+ return readByteVectorInternal(reinterpret_cast<int8_t*>(val->data()), val->size());
}
status_t Parcel::readByteVector(std::unique_ptr<std::vector<int8_t>>* val) const {
- return readByteVectorInternalPtr(this, val);
+ if (status_t status = resizeOutVector(val); status != OK) return status;
+ if (val->get() == nullptr) {
+ // resizeOutVector does not create the out vector if size is < 0.
+ // This occurs when writing a null byte vector.
+ return OK;
+ }
+ return readByteVectorInternal((*val)->data(), (*val)->size());
}
status_t Parcel::readByteVector(std::unique_ptr<std::vector<uint8_t>>* val) const {
- return readByteVectorInternalPtr(this, val);
+ if (status_t status = resizeOutVector(val); status != OK) return status;
+ if (val->get() == nullptr) {
+ // resizeOutVector does not create the out vector if size is < 0.
+ // This occurs when writing a null byte vector.
+ return OK;
+ }
+ return readByteVectorInternal(reinterpret_cast<int8_t*>((*val)->data()), (*val)->size());
}
status_t Parcel::readInt32Vector(std::unique_ptr<std::vector<int32_t>>* val) const {
diff --git a/libs/binder/include/binder/Parcel.h b/libs/binder/include/binder/Parcel.h
index 3471e1356d..7c34071270 100644
--- a/libs/binder/include/binder/Parcel.h
+++ b/libs/binder/include/binder/Parcel.h
@@ -19,6 +19,7 @@
#include <map> // for legacy reasons
#include <string>
+#include <type_traits>
#include <vector>
#include <android-base/unique_fd.h>
@@ -157,6 +158,18 @@ public:
status_t writeStrongBinderVector(const std::unique_ptr<std::vector<sp<IBinder>>>& val);
status_t writeStrongBinderVector(const std::vector<sp<IBinder>>& val);
+ // Write an Enum vector with underlying type int8_t.
+ // Does not use padding; each byte is contiguous.
+ template<typename T, std::enable_if_t<std::is_enum_v<T> && std::is_same_v<typename std::underlying_type_t<T>,int8_t>, bool> = 0>
+ status_t writeEnumVector(const std::vector<T>& val);
+ template<typename T, std::enable_if_t<std::is_enum_v<T> && std::is_same_v<typename std::underlying_type_t<T>,int8_t>, bool> = 0>
+ status_t writeEnumVector(const std::unique_ptr<std::vector<T>>& val);
+ // Write an Enum vector with underlying type != int8_t.
+ template<typename T, std::enable_if_t<std::is_enum_v<T> && !std::is_same_v<typename std::underlying_type_t<T>,int8_t>, bool> = 0>
+ status_t writeEnumVector(const std::vector<T>& val);
+ template<typename T, std::enable_if_t<std::is_enum_v<T> && !std::is_same_v<typename std::underlying_type_t<T>,int8_t>, bool> = 0>
+ status_t writeEnumVector(const std::unique_ptr<std::vector<T>>& val);
+
template<typename T>
status_t writeParcelableVector(const std::unique_ptr<std::vector<std::unique_ptr<T>>>& val);
template<typename T>
@@ -275,6 +288,19 @@ public:
status_t readStrongBinder(sp<IBinder>* val) const;
status_t readNullableStrongBinder(sp<IBinder>* val) const;
+
+ // Read an Enum vector with underlying type int8_t.
+ // Does not use padding; each byte is contiguous.
+ template<typename T, std::enable_if_t<std::is_enum_v<T> && std::is_same_v<typename std::underlying_type_t<T>,int8_t>, bool> = 0>
+ status_t readEnumVector(std::vector<T>* val) const;
+ template<typename T, std::enable_if_t<std::is_enum_v<T> && std::is_same_v<typename std::underlying_type_t<T>,int8_t>, bool> = 0>
+ status_t readEnumVector(std::unique_ptr<std::vector<T>>* val) const;
+ // Read an Enum vector with underlying type != int8_t.
+ template<typename T, std::enable_if_t<std::is_enum_v<T> && !std::is_same_v<typename std::underlying_type_t<T>,int8_t>, bool> = 0>
+ status_t readEnumVector(std::vector<T>* val) const;
+ template<typename T, std::enable_if_t<std::is_enum_v<T> && !std::is_same_v<typename std::underlying_type_t<T>,int8_t>, bool> = 0>
+ status_t readEnumVector(std::unique_ptr<std::vector<T>>* val) const;
+
template<typename T>
status_t readParcelableVector(
std::unique_ptr<std::vector<std::unique_ptr<T>>>* val) const;
@@ -438,6 +464,19 @@ private:
status_t writeRawNullableParcelable(const Parcelable*
parcelable);
+ template<typename T, std::enable_if_t<std::is_same_v<typename std::underlying_type_t<T>,int32_t>, bool> = 0>
+ status_t writeEnum(const T& val);
+ template<typename T, std::enable_if_t<std::is_same_v<typename std::underlying_type_t<T>,int64_t>, bool> = 0>
+ status_t writeEnum(const T& val);
+
+ template<typename T, std::enable_if_t<std::is_same_v<typename std::underlying_type_t<T>,int32_t>, bool> = 0>
+ status_t readEnum(T* pArg) const;
+ template<typename T, std::enable_if_t<std::is_same_v<typename std::underlying_type_t<T>,int64_t>, bool> = 0>
+ status_t readEnum(T* pArg) const;
+
+ status_t writeByteVectorInternal(const int8_t* data, size_t size);
+ status_t readByteVectorInternal(int8_t* data, size_t size) const;
+
template<typename T, typename U>
status_t unsafeReadTypedVector(std::vector<T>* val,
status_t(Parcel::*read_func)(U*) const) const;
@@ -913,6 +952,66 @@ status_t Parcel::writeParcelableVector(const std::shared_ptr<std::vector<std::un
return unsafeWriteTypedVector(*val, &Parcel::writeNullableParcelable<T>);
}
+template<typename T, std::enable_if_t<std::is_same_v<typename std::underlying_type_t<T>,int32_t>, bool>>
+status_t Parcel::writeEnum(const T& val) {
+ return writeInt32(static_cast<int32_t>(val));
+}
+template<typename T, std::enable_if_t<std::is_same_v<typename std::underlying_type_t<T>,int64_t>, bool>>
+status_t Parcel::writeEnum(const T& val) {
+ return writeInt64(static_cast<int64_t>(val));
+}
+
+template<typename T, std::enable_if_t<std::is_enum_v<T> && std::is_same_v<typename std::underlying_type_t<T>,int8_t>, bool>>
+status_t Parcel::writeEnumVector(const std::vector<T>& val) {
+ return writeByteVectorInternal(reinterpret_cast<const int8_t*>(val.data()), val.size());
+}
+template<typename T, std::enable_if_t<std::is_enum_v<T> && std::is_same_v<typename std::underlying_type_t<T>,int8_t>, bool>>
+status_t Parcel::writeEnumVector(const std::unique_ptr<std::vector<T>>& val) {
+ if (!val) return writeInt32(-1);
+ return writeByteVectorInternal(reinterpret_cast<const int8_t*>(val->data()), val->size());
+}
+template<typename T, std::enable_if_t<std::is_enum_v<T> && !std::is_same_v<typename std::underlying_type_t<T>,int8_t>, bool>>
+status_t Parcel::writeEnumVector(const std::vector<T>& val) {
+ return writeTypedVector(val, &Parcel::writeEnum);
+}
+template<typename T, std::enable_if_t<std::is_enum_v<T> && !std::is_same_v<typename std::underlying_type_t<T>,int8_t>, bool>>
+status_t Parcel::writeEnumVector(const std::unique_ptr<std::vector<T>>& val) {
+ return writeNullableTypedVector(val, &Parcel::writeEnum);
+}
+
+template<typename T, std::enable_if_t<std::is_same_v<typename std::underlying_type_t<T>,int32_t>, bool>>
+status_t Parcel::readEnum(T* pArg) const {
+ return readInt32(reinterpret_cast<int32_t *>(pArg));
+}
+template<typename T, std::enable_if_t<std::is_same_v<typename std::underlying_type_t<T>,int64_t>, bool>>
+status_t Parcel::readEnum(T* pArg) const {
+ return readInt64(reinterpret_cast<int64_t *>(pArg));
+}
+
+template<typename T, std::enable_if_t<std::is_enum_v<T> && std::is_same_v<typename std::underlying_type_t<T>,int8_t>, bool>>
+status_t Parcel::readEnumVector(std::vector<T>* val) const {
+ if (status_t status = resizeOutVector(val); status != OK) return status;
+ return readByteVectorInternal(reinterpret_cast<int8_t*>(val->data()), val->size());
+}
+template<typename T, std::enable_if_t<std::is_enum_v<T> && std::is_same_v<typename std::underlying_type_t<T>,int8_t>, bool>>
+status_t Parcel::readEnumVector(std::unique_ptr<std::vector<T>>* val) const {
+ if (status_t status = resizeOutVector(val); status != OK) return status;
+ if (val->get() == nullptr) {
+ // resizeOutVector does not create the out vector if size is < 0.
+ // This occurs when writing a null Enum vector.
+ return OK;
+ }
+ return readByteVectorInternal(reinterpret_cast<int8_t*>((*val)->data()), (*val)->size());
+}
+template<typename T, std::enable_if_t<std::is_enum_v<T> && !std::is_same_v<typename std::underlying_type_t<T>,int8_t>, bool>>
+status_t Parcel::readEnumVector(std::vector<T>* val) const {
+ return readTypedVector(val, &Parcel::readEnum);
+}
+template<typename T, std::enable_if_t<std::is_enum_v<T> && !std::is_same_v<typename std::underlying_type_t<T>,int8_t>, bool>>
+status_t Parcel::readEnumVector(std::unique_ptr<std::vector<T>>* val) const {
+ return readNullableTypedVector(val, &Parcel::readEnum);
+}
+
// ---------------------------------------------------------------------------
inline TextOutput& operator<<(TextOutput& to, const Parcel& parcel)
generated by cgit v1.2.3-59-g8ed1b (git 2.39.0) at 2025-11-04 00:46:16 +0000