eBPF on Linux Programs The core component of eBPF is the programs. eBPF programs can be attached to various locations in the kernel and invoked like functions. These programs have a wide range of applications, such as logging information, modifying data, making decisions, or triggering side effects. The locations where a program can be attached … Read more
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1. Function of the ioctl Function A function for device control is provided in the kernel source code, and device control is implemented through the ioctl function, while data transmission is achieved through read/write. Example: For instance, the control of the camera’s operating mode is implemented through ioctl, while the reading and writing of camera … Read more
In-Depth Analysis of the Linux Routing Table Establishment Process 1. Working Principle The routing table is a core component of the Linux networking stack, used to determine the forwarding path of packets. The establishment process is divided into three levels: Kernel Initialization Stage Automatically create the local routing table (<span>local</span> table) Generate direct routes for … Read more
Basic Concepts of Device Objects and Symbolic Links In kernel programming, a Device Object is the core entity for communication between the kernel and user-mode applications. Device objects are similar to windows in Windows GUI programming, being the only entities capable of receiving and processing requests (IRP). Each device object belongs to a Driver Object, … Read more
This article is a highlight from the Kanxue ForumAuthor from Kanxue ForumID: SSH Landscape Painting 1 Creating a Driver Project Creating the Project Reference article for WDK and VS installation: X86 Kernel Notes 0 Configuring Dual Machine Debugging Environment Open VS2017, create a new project, select Visual C++ -> Windows Drivers -> Legacy -> Empty … Read more