2

In our system (Linux 4.4) we see a a unix socket with an abstract namespace (those starting with @ with no corresponding file on the file system). Showing its details with lsof reports:

serv 7539 aesmd    6u  unix 0xffff8800795e12c0      0t0   220690 @aesm_socket_base type=STREAM

We would like to create a sort of alias (or symlink) on the filesystem (something like /var/run/aesm.sock )

Is there a way to do so ?

  • What are you going to use it for? In what way does it need to be an alias (which I think isn't possible) and not an unrelated socket with a program forwarding between them (which is definitely possible)? – Gilles 'SO- stop being evil' Jun 14 '16 at 20:30
  • It can be an unrelated socket, as long as it forwards all the actions (connection attempts and traffic) to the original one. The resulting, file-system based socket /var/run/aesm.sock is going to be made accessible from inside a docker container via the usual volume mounting approach. – Valerio Schiavoni Jun 15 '16 at 9:27
3

You can forward between just about any kind of sockets and other communication channels with socat. Listen to connections on the file-named socket, forward them to the abstract-named socket, forking to handle concurrent connections. I think this should do the trick (untested):

socat UNIX-LISTEN:/var/run/aesm.sock,fork ABSTRACT-CONNECT:aesm_socket_base
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