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Re: [GNUnet-developers] a couple of fixes for abstract sockets on linux

From: Christian Grothoff
Subject: Re: [GNUnet-developers] a couple of fixes for abstract sockets on linux
Date: Thu, 26 Sep 2013 16:38:22 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:10.0.12) Gecko/20130116 Icedove/10.0.12

Hi Andrew,

Thanks for looking into this!

The first patch looks OK, I'll likely apply it when I had the time to
test it a bit.  The second one is technically OK, however there was
a very different suggestion before to get rid of abstract sockets so
that we can use the file system for access control:

Thus, I think that patch might rather be useful as a hints for us as to
where we'd need to make changes to address #2887.  As that's a rather
different direction, I'm likely not going to apply your second patch for

I've attached both of your patches to #2887 for future reference.

Happy hacking!


On 09/26/2013 03:49 PM, Andrew Cann wrote:
> These two patches fix a couple of bugs in the way abstract unix domain
> sockets are used on Linux.
> This changes the addrlen argument passed to the connect, bind and sendto
> syscalls to reflect the length of the string in sockaddr_un.sun_path. I
> was trying to talk to GNUnet services using socat and discovered that it
> expects abstract sockets to be created this way and won't connect
> otherwise. Looking at some other programs that I could talk to using
> socat (dbus, X11), this is how they create abstract sockets as well.
> Currently when using an abstract socket the first character of the path
> get chopped off. So, for example, trying to create a socket called
> "/tmp/gnunet-service-foo.sock" results in a socket called
> "tmp/gnunet-service-foo.sock". This patch fixes this.
>  - Andrew
> _______________________________________________
> GNUnet-developers mailing list
> address@hidden

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