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Commit 86338db0 authored by Roman Kiryanov's avatar Roman Kiryanov
Browse files

Add isAidlNativeHandleEmpty to libaidlcommonsupport 



Bug: 251042358
Test: libaidlcommonsupport_test
Signed-off-by: default avatarRoman Kiryanov <rkir@google.com>
Change-Id: I96dc2a39d60f955b8a686adcb7446e1c54747a35
parent e6fe69b7

common/support/NativeHandle.cpp

+7 −0
Original line number Diff line number Diff line
@@ -22,6 +22,13 @@ namespace android { 


using aidl::android::hardware::common::NativeHandle;



/**

 * Checks if a NativeHandle is null

 */

bool isAidlNativeHandleEmpty(const NativeHandle& handle) {

    return handle.fds.empty() && handle.ints.empty();

}



static native_handle_t* fromAidl(const NativeHandle& handle, bool doDup) {

    native_handle_t* to = native_handle_create(handle.fds.size(), handle.ints.size());

    if (!to) return nullptr;

common/support/include/aidlcommonsupport/NativeHandle.h

+5 −0
Original line number Diff line number Diff line
@@ -21,6 +21,11 @@ 


namespace android {



/**

 * Checks if a NativeHandle is empty.

 */

bool isAidlNativeHandleEmpty(const aidl::android::hardware::common::NativeHandle& handle);



/**

 * Creates a libcutils native handle from an AIDL native handle, but it does not

 * dup internally, so it will contain the same FDs as the handle itself. The

common/support/test.cpp

+6 −0
Original line number Diff line number Diff line
@@ -62,6 +62,7 @@ static NativeHandle makeTestAidlHandle() { 


TEST(ConvertNativeHandle, MakeFromAidlEmpty) {

    NativeHandle handle;

    EXPECT_TRUE(isAidlNativeHandleEmpty(handle));

    native_handle_t* to = makeFromAidl(handle);

    checkEq(handle, to, false /*exceptFds*/);

    // no native_handle_close b/c fds are owned by NativeHandle
@@ -70,6 +71,7 @@ TEST(ConvertNativeHandle, MakeFromAidlEmpty) { 


TEST(ConvertNativeHandle, MakeFromAidl) {

    NativeHandle handle = makeTestAidlHandle();

    EXPECT_FALSE(isAidlNativeHandleEmpty(handle));

    native_handle_t* to = makeFromAidl(handle);

    checkEq(handle, to, false /*exceptFds*/);

    // no native_handle_close b/c fds are owned by NativeHandle
@@ -106,6 +108,7 @@ static native_handle_t* makeTestLibcutilsHandle() { 
TEST(ConvertNativeHandle, MakeToAidlEmpty) {

    native_handle_t* handle = native_handle_create(0, 0);

    NativeHandle to = makeToAidl(handle);

    EXPECT_TRUE(isAidlNativeHandleEmpty(to));

    checkEq(to, handle, false /*exceptFds*/);

    // no native_handle_close b/c fds are owned by NativeHandle now

    EXPECT_EQ(0, native_handle_delete(handle));
@@ -114,6 +117,7 @@ TEST(ConvertNativeHandle, MakeToAidlEmpty) { 
TEST(ConvertNativeHandle, MakeToAidl) {

    native_handle_t* handle = makeTestLibcutilsHandle();

    NativeHandle to = makeToAidl(handle);

    EXPECT_FALSE(isAidlNativeHandleEmpty(to));

    checkEq(to, handle, false /*exceptFds*/);

    // no native_handle_close b/c fds are owned by NativeHandle now

    EXPECT_EQ(0, native_handle_delete(handle));
@@ -122,6 +126,7 @@ TEST(ConvertNativeHandle, MakeToAidl) { 
TEST(ConvertNativeHandle, DupToAidlEmpty) {

    native_handle_t* handle = native_handle_create(0, 0);

    NativeHandle to = dupToAidl(handle);

    EXPECT_TRUE(isAidlNativeHandleEmpty(to));

    checkEq(to, handle, true /*exceptFds*/);

    EXPECT_EQ(0, native_handle_close(handle));

    EXPECT_EQ(0, native_handle_delete(handle));
@@ -130,6 +135,7 @@ TEST(ConvertNativeHandle, DupToAidlEmpty) { 
TEST(ConvertNativeHandle, DupToAidl) {

    native_handle_t* handle = makeTestLibcutilsHandle();

    NativeHandle to = dupToAidl(handle);

    EXPECT_FALSE(isAidlNativeHandleEmpty(to));

    checkEq(to, handle, true /*exceptFds*/);

    EXPECT_EQ(0, native_handle_close(handle));

    EXPECT_EQ(0, native_handle_delete(handle));