https://github.com/python/cpython/commit/eca3b26067a48bf18e59648695ee1a7bc36534fc commit: eca3b26067a48bf18e59648695ee1a7bc36534fc branch: main author: Serhiy Storchaka <[email protected]> committer: serhiy-storchaka <[email protected]> date: 2026-07-20T14:54:22Z summary:
gh-154240: Skip cmsg truncation socket tests on OpenBSD and DragonFly (GH-154244) Co-authored-by: Claude Fable 5 <[email protected]> files: M Lib/test/test_socket.py diff --git a/Lib/test/test_socket.py b/Lib/test/test_socket.py index 299e7212966ae3..99f9e746c854e3 100644 --- a/Lib/test/test_socket.py +++ b/Lib/test/test_socket.py @@ -59,6 +59,9 @@ # SCM_RIGHTS control message when several are sent in a single sendmsg(). BSD_COMBINES_SCM_RIGHTS = sys.platform.startswith( ("netbsd", "openbsd", "dragonfly")) +# OpenBSD and DragonFly fail recvmsg() with EMSGSIZE, instead of setting +# MSG_CTRUNC, when the ancillary data buffer is too small for a cmsghdr. +CMSG_TRUNC_RAISES_EMSGSIZE = sys.platform.startswith(("openbsd", "dragonfly")) WSL = "microsoft-standard-WSL" in platform.release() try: @@ -4351,6 +4354,7 @@ def _testCmsgTrunc0(self): # (but still too small) buffer sizes. @skipForRefleakHuntinIf(sys.platform == "darwin", "#80931") + @unittest.skipIf(CMSG_TRUNC_RAISES_EMSGSIZE, "skipping, see gh-154240") def testCmsgTrunc1(self): self.checkTruncatedHeader(self.doRecvmsg(self.serv_sock, len(MSG), 1)) @@ -4359,6 +4363,7 @@ def _testCmsgTrunc1(self): self.createAndSendFDs(1) @skipForRefleakHuntinIf(sys.platform == "darwin", "#80931") + @unittest.skipIf(CMSG_TRUNC_RAISES_EMSGSIZE, "skipping, see gh-154240") def testCmsgTrunc2Int(self): # The cmsghdr structure has at least three members, two of # which are ints, so we still shouldn't see any ancillary @@ -4371,6 +4376,7 @@ def _testCmsgTrunc2Int(self): self.createAndSendFDs(1) @skipForRefleakHuntinIf(sys.platform == "darwin", "#80931") + @unittest.skipIf(CMSG_TRUNC_RAISES_EMSGSIZE, "skipping, see gh-154240") def testCmsgTruncLen0Minus1(self): self.checkTruncatedHeader(self.doRecvmsg(self.serv_sock, len(MSG), socket.CMSG_LEN(0) - 1)) @@ -4408,6 +4414,7 @@ def checkTruncatedArray(self, ancbuf, maxdata, mindata=0): self.checkFDs(fds) @skipForRefleakHuntinIf(sys.platform == "darwin", "#80931") + @unittest.skipIf(CMSG_TRUNC_RAISES_EMSGSIZE, "skipping, see gh-154240") def testCmsgTruncLen0(self): self.checkTruncatedArray(ancbuf=socket.CMSG_LEN(0), maxdata=0) @@ -4416,6 +4423,7 @@ def _testCmsgTruncLen0(self): self.createAndSendFDs(1) @skipForRefleakHuntinIf(sys.platform == "darwin", "#80931") + @unittest.skipIf(CMSG_TRUNC_RAISES_EMSGSIZE, "skipping, see gh-154240") def testCmsgTruncLen0Plus1(self): self.checkTruncatedArray(ancbuf=socket.CMSG_LEN(0) + 1, maxdata=1) @@ -4424,6 +4432,7 @@ def _testCmsgTruncLen0Plus1(self): self.createAndSendFDs(2) @skipForRefleakHuntinIf(sys.platform == "darwin", "#80931") + @unittest.skipIf(CMSG_TRUNC_RAISES_EMSGSIZE, "skipping, see gh-154240") def testCmsgTruncLen1(self): self.checkTruncatedArray(ancbuf=socket.CMSG_LEN(SIZEOF_INT), maxdata=SIZEOF_INT) @@ -4434,6 +4443,7 @@ def _testCmsgTruncLen1(self): @skipForRefleakHuntinIf(sys.platform == "darwin", "#80931") + @unittest.skipIf(CMSG_TRUNC_RAISES_EMSGSIZE, "skipping, see gh-154240") def testCmsgTruncLen2Minus1(self): self.checkTruncatedArray(ancbuf=socket.CMSG_LEN(2 * SIZEOF_INT) - 1, maxdata=(2 * SIZEOF_INT) - 1) @@ -4706,6 +4716,7 @@ def _testSingleCmsgTrunc0(self): # (but still too small) buffer sizes. @requireAttrs(socket, "IPV6_RECVHOPLIMIT", "IPV6_HOPLIMIT") + @unittest.skipIf(CMSG_TRUNC_RAISES_EMSGSIZE, "skipping, see gh-154240") def testSingleCmsgTrunc1(self): self.checkHopLimitTruncatedHeader(ancbufsize=1) @@ -4715,6 +4726,7 @@ def _testSingleCmsgTrunc1(self): self.sendToServer(MSG) @requireAttrs(socket, "IPV6_RECVHOPLIMIT", "IPV6_HOPLIMIT") + @unittest.skipIf(CMSG_TRUNC_RAISES_EMSGSIZE, "skipping, see gh-154240") def testSingleCmsgTrunc2Int(self): self.checkHopLimitTruncatedHeader(ancbufsize=2 * SIZEOF_INT) @@ -4724,6 +4736,7 @@ def _testSingleCmsgTrunc2Int(self): self.sendToServer(MSG) @requireAttrs(socket, "IPV6_RECVHOPLIMIT", "IPV6_HOPLIMIT") + @unittest.skipIf(CMSG_TRUNC_RAISES_EMSGSIZE, "skipping, see gh-154240") def testSingleCmsgTruncLen0Minus1(self): self.checkHopLimitTruncatedHeader(ancbufsize=socket.CMSG_LEN(0) - 1) @@ -4733,6 +4746,7 @@ def _testSingleCmsgTruncLen0Minus1(self): self.sendToServer(MSG) @requireAttrs(socket, "IPV6_RECVHOPLIMIT", "IPV6_HOPLIMIT") + @unittest.skipIf(CMSG_TRUNC_RAISES_EMSGSIZE, "skipping, see gh-154240") def testSingleCmsgTruncInData(self): # Test truncation of a control message inside its associated # data. The message may be returned with its data truncated, @@ -4805,6 +4819,7 @@ def _testSecondCmsgTrunc0(self): @requireAttrs(socket, "CMSG_SPACE", "IPV6_RECVHOPLIMIT", "IPV6_HOPLIMIT", "IPV6_RECVTCLASS", "IPV6_TCLASS") + @unittest.skipIf(CMSG_TRUNC_RAISES_EMSGSIZE, "skipping, see gh-154240") def testSecondCmsgTrunc1(self): self.checkTruncatedSecondHeader(socket.CMSG_SPACE(SIZEOF_INT) + 1) @@ -4815,6 +4830,7 @@ def _testSecondCmsgTrunc1(self): @requireAttrs(socket, "CMSG_SPACE", "IPV6_RECVHOPLIMIT", "IPV6_HOPLIMIT", "IPV6_RECVTCLASS", "IPV6_TCLASS") + @unittest.skipIf(CMSG_TRUNC_RAISES_EMSGSIZE, "skipping, see gh-154240") def testSecondCmsgTrunc2Int(self): self.checkTruncatedSecondHeader(socket.CMSG_SPACE(SIZEOF_INT) + 2 * SIZEOF_INT) @@ -4826,6 +4842,7 @@ def _testSecondCmsgTrunc2Int(self): @requireAttrs(socket, "CMSG_SPACE", "IPV6_RECVHOPLIMIT", "IPV6_HOPLIMIT", "IPV6_RECVTCLASS", "IPV6_TCLASS") + @unittest.skipIf(CMSG_TRUNC_RAISES_EMSGSIZE, "skipping, see gh-154240") def testSecondCmsgTruncLen0Minus1(self): self.checkTruncatedSecondHeader(socket.CMSG_SPACE(SIZEOF_INT) + socket.CMSG_LEN(0) - 1) @@ -4837,6 +4854,7 @@ def _testSecondCmsgTruncLen0Minus1(self): @requireAttrs(socket, "CMSG_SPACE", "IPV6_RECVHOPLIMIT", "IPV6_HOPLIMIT", "IPV6_RECVTCLASS", "IPV6_TCLASS") + @unittest.skipIf(CMSG_TRUNC_RAISES_EMSGSIZE, "skipping, see gh-154240") def testSecondCmsgTruncInData(self): # Test truncation of the second of two control messages inside # its associated data. _______________________________________________ Python-checkins mailing list -- [email protected] To unsubscribe send an email to [email protected] https://mail.python.org/mailman3//lists/python-checkins.python.org Member address: [email protected]
