Date: Fri, 26 Aug 2016 03:21:44 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 212167] listen() system call succeeds for a locally bound UNIX-domain datagram-oriented socket Message-ID: <bug-212167-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=212167 Bug ID: 212167 Summary: listen() system call succeeds for a locally bound UNIX-domain datagram-oriented socket Product: Base System Version: 10.3-STABLE Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: freebsd-bugs@FreeBSD.org Reporter: arseny.vakhrushev@gmail.com Created attachment 174083 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=174083&action=edit Simple program that illustrates the bug FreeBSD 10.3-RELEASE-p4: While messing with UNIX-domain sockets (AF_LOCAL), I've noticed that the listen() system call succeeds for a locally bound datagram-oriented (SOCK_DGRAM) socket on FreeBSD while legitimately failing on other systems since datagram sockets can't be in a listening state. Seemed like not a big deal first but eventually led to some undefined behaviour (which I wasn't able to reproduce as a separate test-case unfortunately). Nevertheless, expected behaviour would be to fail with EOPNOTSUPP or a similar error code. Also, please note that no such unexpected behaviour is observed for UDP sockets (AF_INET and AF_INET6). The bug seems to affect only UNIX sockets (AF_LOCAL). See attached a simple program that illustrates the bug. -- You are receiving this mail because: You are the assignee for the bug.help
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