Obtaining a list of open sockets from "struct task_struct"

Hi all, I am trying to understand more about kernel data structures and I would like to know how to obtain a list of TCP/UDP sockets, starting from a "struct task_struct" variable "task". So far, I have understood the following: Please correct me if I am wrong! :) - An open file descriptor is represented by a "struct file *" in the tasks's file table: task->files.fdt.fd - The file tables are organised as a linked list - The file table contains a structure fd_array, that is an array of "struct file *", each representing an open file But, almost all operations in the TCP code start from a "struct sock". Are the "struct file" and "struct sock" somehow connected? Thanks, -- Vimal