Linux API to determine sockets owned by a process

Question

Is there a Linux library that will enable me to tell what IP sockets are owned by what processes? I guess I\'m looking for the programmatic equivalent of lsof -i

Answer 1

I think you first have to look through the open fds in /proc/*/fd, e.g.

4 -> socket:[11147]

and then look for the referenced sockets (by the inode) in /proc/net/tcp (or /proc/net/udp), e.g.

12: B382595D:8B40 D5C43B45:0050 01 00000000:00000000 00:00000000 00000000  1000        0 11065 1 ffff88008bd35480 69 4 12 4 -1