linux kernel security

Linux kernel:Kernel design Genre:Single core design, but fully learn the advantages of micro-kernel system design, for the kernel introduced a modular mechanism, the core height of modularity;After the kernel is modularized, some of the most basic and important content is compiled into

first, the kernel timer 1. Basic ConceptsIn some scenarios, we need to do some action after a certain time, but do not want to wait and waste the CPU, this time the timer is a very appropriate mechanism. The timer is used to perform a function at a future point in time to accomplish a specific task. The kernel timer tells the kernel to use specific parameters to

is the-stable kernel. They contain some security for a given 2.6.x kernel Problems as well as the restoration of important degradation found. For those who want the most recent stable kernel and are not interested in the experimental version of the test development For users, we recommend this branch. If there is no 2

Date Kernel version Architecture author GitHub CSDN 2016-06-02 Linux-4.5 X86 Arm Gatieme Linuxdevicedrivers Linux process management and scheduling--a description of the process Why kernel threads need

select the "module unloading" and "automatic kernel module loading" options.* For the "Processor type and features" option, you must select the "preemptible kernel" option, which is one of the important reasons that 2.6.x kernel is better than 2.4.x kernel.* For the configuration of "device drivers --> Block devices",

The kernel is a very small part of the entire operating system. According to Google's R D strength, it is not that difficult to develop a kernel? Is it really difficult to develop the kernel, or is Google making Android use the Linux kernel based on some considerations? The

During this time, I read "Linux kernel source code Scenario Analysis" and wrote some insights. Reading the kernel source code is very interesting. It is like a line that concatenates basic computer courses such as operating systems, compilation principles, C language, data structures and algorithms, and computer architecture. I think the

Http://www.ibm.com/developerworks/cn/linux/l-kdb/index.htmlThis article will first introduce some kernel code monitoring and error tracing techniques on the Linux kernel, which vary depending on the required usage environment and usage methods, and then focus on the source-level debugging methods of the three

, the kernel defines a set of standard APIs, the application if a set of API interface can be used to invoke the kernel through this API interface, if not satisfied, the kernel will ignore, for security reasons, Otherwise the application can simply call the kernel, it is not

Linux Kernel compilation details, Linux kernel details After learning some online materials, I tried to find out and sort out this article. We hope you will criticize and correct the mistakes due to their limited level and improper position. Important references include: Http://raspberrypi.stackexchange.com/questions/

Tags: socket source x86 INF location Architecture level pre compositionThe world is sad to end, the Octopus elder brother also retired, even the non-sincerity does not disturb in the worship diggers also suddenly a lot less. This "Linux kernel cultivation of the road" in excellence, when, China-pub has also been on sale, although serious literature, but in order to ensure fluency, most of the text I also ar

the process of kernel compilation 1. Download Kernel source code tree extract to/usr/src# Tar XF linux-3.13.5.tar.xz-c/usr/src# Ln-sv/usr/src/linux-3.13.5/usr/src/linux2. The kernel configuration profile is stored in the kernel s

http://www.codemachine.com/courses.html#kerdbgWindows Kernel Internals for Security researchersThis course takes a deep dive to the internals of the Windows kernel from a security perspective. Attendees learn about behind the scenes working of various in the Windows kernel w

)Add I (7->8)----Increase I (7->8)Write back I (8)----Write back I (8)As described above, concurrent access to shared resources, the I value may appear as 8, resulting in unexpected functionality.Several methods and interfaces are available in the Linux kernel to address the above problems.1. Atomic AccessThat is, atomic execution obtains I, adds I, and writes back I 3 instructions. Examples of related inte

Data exchange between linux kernel and user layer and linux Kernel 1. There are basically System Call interfaces file_operation interfaces: read write ioctl? Module param of module driver (module parameters of module driver ). 2. kernel startup parameters :?By identifying

Chapter One: Introduction to the Kernel The scope of the processor's activity at any given point in time: A, run in the kernel space, in the process context, on behalf of a specific process execution; b, running in kernel space, in the interrupt context, regardless of any process, handling a particular interrupt; C, run in user space, execute user process. When a

The simple multi-task kernel in Chapter 4 of "complete Linux Kernel Analysis-Based on 0.12 kernel" by Zhao Yi, that is, the simplest kernel example that continuously outputs AAAAABBBBB, the source code is clearly explained, but how to compile an organizational file depends o

Compiling the Linux kernel is the basic function of kernel development, and if we add kernel functionality by directly modifying the Linux kernel code, the modified kernel code must be

This HTML page address: http://oss.org.cn/kernel-book/In- depth analysisLinuxKernel sourceObjectiveChapter I. into Linux1.1 GNU and Linux growth1.2 Linux development model and operation mechanism1.3 into Linux Kernel 1.3.1 Features of the

Before trying kernel development, you need to have a general understanding of the kernel. Main Content: Obtain the kernel source code. The kernel source code is structured and compiled. kernel development features 1. obtain the kernel