From: Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com> Date: Mon, 20 Jul 2026 19:06:59 +0000 (+0200) Subject: [3.14] gh-154240: Skip cmsg truncation socket tests on OpenBSD and DragonFly (GH... X-Git-Url: http://git.ipfire.org/index.cgi?a=commitdiff_plain;h=8e1b33d5fcf206e478dee4ab410ee551a2cc6ac0;p=thirdparty%2FPython%2Fcpython.git [3.14] gh-154240: Skip cmsg truncation socket tests on OpenBSD and DragonFly (GH-154244) (GH-154285) (cherry picked from commit eca3b26067a48bf18e59648695ee1a7bc36534fc) Co-authored-by: Serhiy Storchaka Co-authored-by: Claude Fable 5 --- diff --git a/Lib/test/test_socket.py b/Lib/test/test_socket.py index 923a546eaf51..c897c0a56ae6 100644 --- a/Lib/test/test_socket.py +++ b/Lib/test/test_socket.py @@ -57,6 +57,9 @@ SOLARIS = sys.platform.startswith("sunos") # 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: @@ -4265,6 +4268,7 @@ class SCMRightsTest(SendrecvmsgServerTimeoutBase): # (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)) @@ -4273,6 +4277,7 @@ class SCMRightsTest(SendrecvmsgServerTimeoutBase): 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 @@ -4285,6 +4290,7 @@ class SCMRightsTest(SendrecvmsgServerTimeoutBase): 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)) @@ -4322,6 +4328,7 @@ class SCMRightsTest(SendrecvmsgServerTimeoutBase): 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) @@ -4330,6 +4337,7 @@ class SCMRightsTest(SendrecvmsgServerTimeoutBase): 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) @@ -4338,6 +4346,7 @@ class SCMRightsTest(SendrecvmsgServerTimeoutBase): 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) @@ -4348,6 +4357,7 @@ class SCMRightsTest(SendrecvmsgServerTimeoutBase): @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) @@ -4620,6 +4630,7 @@ class RFC3542AncillaryTest(SendrecvmsgServerTimeoutBase): # (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) @@ -4629,6 +4640,7 @@ class RFC3542AncillaryTest(SendrecvmsgServerTimeoutBase): 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) @@ -4638,6 +4650,7 @@ class RFC3542AncillaryTest(SendrecvmsgServerTimeoutBase): 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) @@ -4647,6 +4660,7 @@ class RFC3542AncillaryTest(SendrecvmsgServerTimeoutBase): 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, @@ -4719,6 +4733,7 @@ class RFC3542AncillaryTest(SendrecvmsgServerTimeoutBase): @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) @@ -4729,6 +4744,7 @@ class RFC3542AncillaryTest(SendrecvmsgServerTimeoutBase): @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) @@ -4740,6 +4756,7 @@ class RFC3542AncillaryTest(SendrecvmsgServerTimeoutBase): @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) @@ -4751,6 +4768,7 @@ class RFC3542AncillaryTest(SendrecvmsgServerTimeoutBase): @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.