[3.11] gh-94821: Fix autobind of empty unix domain address (GH-94826) #94873
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…4826) When binding a unix socket to an empty address on Linux, the socket is automatically bound to an available address in the abstract namespace. >>> s = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM) >>> s.bind("") >>> s.getsockname() b'\x0075499' Since python 3.9, the socket is bound to the one address: >>> s.getsockname() b'\x00' And trying to bind multiple sockets will fail with: Traceback (most recent call last): File "/home/nsoffer/src/cpython/Lib/test/test_socket.py", line 5553, in testAutobind s2.bind("") OSError: [Errno 98] Address already in use Added 2 tests: - Auto binding empty address on Linux - Failing to bind an empty address on other platforms Fixes f6b3a07 (bpo-44493: Add missing terminated NUL in sockaddr_un's length (pythonGH-26866) (cherry picked from commit c22f134) Co-authored-by: Nir Soffer <nsoffer@redhat.com>
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Status check is done, and it's a success ✅ . |
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Status check is done, and it's a success ✅ . |
serhiy-storchaka
approved these changes
Jul 17, 2022
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When binding a unix socket to an empty address on Linux, the socket is
automatically bound to an available address in the abstract namespace.
Since python 3.9, the socket is bound to the one address:
And trying to bind multiple sockets will fail with:
Added 2 tests:
Fixes f6b3a07 (bpo-44493: Add missing terminated NUL in sockaddr_un's length (GH-26866)
(cherry picked from commit c22f134)
Co-authored-by: Nir Soffer nsoffer@redhat.com