On Sun, Feb 22, 2015 at 02:23:57PM +0100, Jan Stary wrote: > This is current/amd64. The default output of netstat(1) > contains quite a few lines like the following for the AF_UNIX family: > > 0x0 stream 0 0 0x0 0x0 > 0x0 stream 0 0 0x0 0x0 > 0x0 stream 0 0 0x0 0x0 > 0x0 stream 0 0 0x0 0x0 > 0x0 stream 0 0 0x0 0x0 > > What are these? Are they unnamed pipes opened in some running process? > As opposed to named pipes which have a filename in the last column? > > 0x0 stream 0 0 0x0 0x0 0x0 0x0 /tmp/aucat/aucat0 >
These are sockets created via socketpair(2) for internal communication (mostly imsg servers). The internal kernel pointers are only show if run as root then you can compare this output with e.g. the file(1) output. -- :wq Claudio
