Is there a way to get the uid of the other end of a unix socket connection

Posted by yuyichao on Stack Overflow See other posts from Stack Overflow or by yuyichao
Published on 2012-03-27T23:01:22Z Indexed on 2012/03/27 23:29 UTC
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sockets

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dbus

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uid

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unix-socket

Is there a way for a unix socket listener to only accept connection from certain user (chmod/chown does not work for abstract socket afaik), or in another word, get the uid of the incoming connection (on Linux)?

Dbus, which uses abstract unix socket on Linux, has a function GetConnectionUnixUser which is used by polkit to determine the caller. So I suppose the dbus-daemon must have a way to do that. Does anyone know how that works?

THX

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