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Код

void get_socket_info(int pid) {
    struct task_struct *task;
    struct files_struct *files;
    struct socket *sock;
    struct inode *inode;
    int index;
    task = find_task_by_pid(pid); /* find task by pid */
    files = task -> files; /* get `struct files_struct' object */
    for (index = 0; index < NR_OPEN_DEFAULT; ++index) { /* see all open files */
        if (files -> fd_array[index] == NULL)
            continue;
        inode = files -> fd_array[index] -> f_dentry -> d_inode;
        if (S_ISSOCK(inode -> i_mode)) {
            sock = SOCKET_I(inode); /* get socket object by inode object */
            ...
        }
    }
}