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Open Source and information security mailing list archives
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Date: Thu, 3 Feb 2011 10:45:42 +0200 From: "Rémi Denis-Courmont" <remi@...lab.net> To: netdev@...r.kernel.org Subject: Re: non-symmetric Unix dgram sockets and poll Le mercredi 2 février 2011 19:36:40 Alban Crequy, vous avez écrit : > Hi, > > I have 3 Unix dgram sockets (sockA, sockB, sockC): > - sockA is connected to sockB. > - sockB is connected to sockC. > - sockC is not connected. > > SockA cannot send any message to sockB because > net/unix/af_unix.c::unix_may_send() prevents it. Is there any reason for > that restriction? Yes, absolutely. When you connect() a socket, you expect to only *receive* packets from the specified peer. -- Rémi Denis-Courmont http://www.remlab.net/ http://fi.linkedin.com/in/remidenis -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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