Module: wine Branch: master Commit: 63dd8743352bdf7f1ae4f6244770a45581806126 URL: https://source.winehq.org/git/wine.git/?a=commit;h=63dd8743352bdf7f1ae4f6244...
Author: Huw Davies huw@codeweavers.com Date: Tue Aug 11 12:49:52 2020 +0100
ole32: Allow Clone to access the original memory block.
Based on a patch by Dmitry Timoshkov.
Signed-off-by: Huw Davies huw@codeweavers.com Signed-off-by: Alexandre Julliard julliard@winehq.org
---
dlls/ole32/hglobalstream.c | 21 ++++++++++++++++----- dlls/ole32/tests/hglobalstream.c | 12 ------------ 2 files changed, 16 insertions(+), 17 deletions(-)
diff --git a/dlls/ole32/hglobalstream.c b/dlls/ole32/hglobalstream.c index e715cd8950..ee345f6293 100644 --- a/dlls/ole32/hglobalstream.c +++ b/dlls/ole32/hglobalstream.c @@ -51,6 +51,11 @@ struct handle_wrapper BOOL delete_on_release; };
+static void handle_addref(struct handle_wrapper *handle) +{ + InterlockedIncrement(&handle->ref); +} + static void handle_release(struct handle_wrapper *handle) { ULONG ref = InterlockedDecrement(&handle->ref); @@ -586,15 +591,21 @@ static HRESULT WINAPI HGLOBALStreamImpl_Clone( IStream* iface, IStream** ppstm) /* [out] */ { - HGLOBALStreamImpl* This = impl_from_IStream(iface); + HGLOBALStreamImpl* This = impl_from_IStream(iface), *clone; ULARGE_INTEGER dummy; LARGE_INTEGER offset; - HRESULT hr;
TRACE(" Cloning %p (deleteOnRelease=%d seek position=%ld)\n",iface,This->handle->delete_on_release,(long)This->currentPosition.QuadPart); - hr = CreateStreamOnHGlobal(This->handle->hglobal, FALSE, ppstm); - if(FAILED(hr)) - return hr; + + *ppstm = NULL; + + clone = hglobalstream_construct(); + if (!clone) return E_OUTOFMEMORY; + + *ppstm = &clone->IStream_iface; + handle_addref(This->handle); + clone->handle = This->handle; + offset.QuadPart = (LONGLONG)This->currentPosition.QuadPart; IStream_Seek(*ppstm, offset, STREAM_SEEK_SET, &dummy); return S_OK; diff --git a/dlls/ole32/tests/hglobalstream.c b/dlls/ole32/tests/hglobalstream.c index 1825fa9c1e..87c502dc2f 100644 --- a/dlls/ole32/tests/hglobalstream.c +++ b/dlls/ole32/tests/hglobalstream.c @@ -579,14 +579,12 @@ static void test_IStream_Clone(void)
stream_info(clone, &hmem_clone, &size, &pos); ok(hmem_clone == hmem, "handles should match\n"); -todo_wine ok(size == 13, "unexpected %d\n", size); ok(pos == 0, "unexpected %d\n", pos);
buf[0] = 0; hr = IStream_Read(clone, buf, sizeof(buf), NULL); ok(hr == S_OK, "unexpected %#x\n", hr); -todo_wine ok(!strcmp(buf, hello), "wrong stream contents\n");
newsize.QuadPart = 0x8000; @@ -600,9 +598,7 @@ todo_wine
stream_info(clone, &hmem_clone, &size, &pos); ok(hmem_clone == hmem, "handles should match\n"); -todo_wine ok(size == 0x8000, "unexpected %#x\n", size); -todo_wine ok(pos == 13, "unexpected %d\n", pos);
IStream_Release(clone); @@ -671,24 +667,19 @@ todo_wine
newsize.QuadPart = 0x8000; hr = IStream_SetSize(clone, newsize); -todo_wine ok(hr == S_OK, "unexpected %#x\n", hr);
stream_info(clone, &hmem_clone, &size, &pos); ok(hmem_clone == hmem, "handles should match\n"); -todo_wine ok(size == 0x8000, "unexpected %#x\n", size); ok(pos == 0, "unexpected %d\n", pos);
hr = IStream_Write(clone, hello, sizeof(hello), NULL); -todo_wine ok(hr == S_OK, "unexpected %#x\n", hr);
stream_info(clone, &hmem_clone, &size, &pos); ok(hmem_clone == hmem, "handles should match\n"); -todo_wine ok(size == 0x8000, "unexpected %#x\n", size); -todo_wine ok(pos == 13, "unexpected %d\n", pos);
offset.QuadPart = 0; @@ -698,14 +689,11 @@ todo_wine buf[0] = 0; hr = IStream_Read(clone, buf, sizeof(buf), NULL); ok(hr == S_OK, "unexpected %#x\n", hr); -todo_wine ok(!strcmp(buf, hello), "wrong stream contents\n");
stream_info(clone, &hmem_clone, &size, &pos); ok(hmem_clone == hmem, "handles should match\n"); -todo_wine ok(size == 0x8000, "unexpected %#x\n", size); -todo_wine ok(pos == 32, "unexpected %d\n", pos);
ret = IStream_Release(clone);