avc_netlink_close - Linux
Overview
avc_netlink_close is a command-line utility designed to close a previously opened Netlink socket and unregister the callback to receive events. It provides an efficient way to manage and control communication with the kernel’s Netfilter subsystem.
Syntax
avc_netlink_close [-h] [--help]
Options/Flags
- -h, –help: Display usage information and exit.
Examples
Closing a Previously Opened Netlink Socket:
avc_netlink_close
Common Issues
- Socket Not Open: If an attempt is made to close a socket that was never opened, the command will fail with an error message. Ensure the socket is opened before closing it.
Integration
Using Scripts for Automation:
avc_netlink_close can be integrated into scripts for automated task management. For instance, a script can open a Netlink socket, register a callback, perform specific tasks, and close the socket before exiting.
#!/bin/bash
# Open a Netlink socket
nl_sock=$(avc_netlink_open)
# Register a callback to receive events
avc_netlink_register_callback $nl_sock
# Perform specific tasks...
# Close the Netlink socket
avc_netlink_close $nl_sock
Related Commands
- avc_netlink_open: Opens a Netlink socket for communication with the kernel’s Netfilter subsystem.
- avc_netlink_register_callback: Registers a callback function to receive events from the Netlink socket.
- avc_netlink_unregister_callback: Unregisters the previously registered callback function.