Patch asyncio.unix_events for bpo-38319 (#97)

home-assistant · Oct 27, 2020 · 2683137 · 2683137
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commit 2683137
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diff --git a/python/3.8/asynctio_unix_events.patch b/python/3.8/asynctio_unix_events.patch
@@ -0,0 +1,16 @@
+diff --git a/Lib/asyncio/unix_events.py b/Lib/asyncio/unix_events.py
+index 1ff8c427da..0e8eb719ed 100644
+--- a/Lib/asyncio/unix_events.py
++++ b/Lib/asyncio/unix_events.py
+@@ -369,6 +369,11 @@ class _UnixSelectorEventLoop(selector_events.BaseSelectorEventLoop):
+                 fut.set_result(total_sent)
+                 return
+
++        # On 32-bit architectures truncate to 1GiB to avoid OverflowError,
++        # see bpo-38319.
++        if sys.maxsize < 2 ** 32:
++            blocksize = min(blocksize, 2 ** 30)
++
+         try:
+             sent = os.sendfile(fd, fileno, offset, blocksize)
+         except (BlockingIOError, InterruptedError):
diff --git a/python/3.9/asynctio_unix_events.patch b/python/3.9/asynctio_unix_events.patch
@@ -0,0 +1,16 @@
+diff --git a/Lib/asyncio/unix_events.py b/Lib/asyncio/unix_events.py
+index f34a5b4b44..b1d0f1e61e 100644
+--- a/Lib/asyncio/unix_events.py
++++ b/Lib/asyncio/unix_events.py
+@@ -369,6 +369,11 @@ class _UnixSelectorEventLoop(selector_events.BaseSelectorEventLoop):
+                 fut.set_result(total_sent)
+                 return
+
++        # On 32-bit architectures truncate to 1GiB to avoid OverflowError,
++        # see bpo-38319.
++        if sys.maxsize < 2 ** 32:
++            blocksize = min(blocksize, 2 ** 30)
++
+         try:
+             sent = os.sendfile(fd, fileno, offset, blocksize)
+         except (BlockingIOError, InterruptedError):