cap_launcher_callback - Linux

Overview

cap_launcher_callback is a command that is used to invoke a callback function in a Linux kernel module. It allows user-space programs to interact with kernel-space code.

Syntax

cap_launcher_callback <kernel module> <callback function> [<module parameters>]

Options/Flags

• -h, –help: Displays help information about the command.
• -v, –verbose: Enables verbose output.
• -d, –debug: Enables debug output.

Examples

To invoke a callback function in a kernel module named my_module, use the following syntax:

cap_launcher_callback my_module my_callback

To pass parameters to the kernel module, use the following syntax:

cap_launcher_callback my_module my_callback param1 param2

Common Issues

One common issue is that the callback function may not be defined in the kernel module. To resolve this, make sure that the callback function is exported from the kernel module.

Integration

cap_launcher_callback can be used with other Linux commands and tools to perform advanced tasks. For example, it can be used with the insmod command to load a kernel module and then invoke a callback function in the module.

Related Commands

• insmod: Loads a kernel module.
• rmmod: Removes a kernel module.
• modprobe: Loads or unloads a kernel module.