linux kernel security

multiple matches, including the system-defined match, it also includes the match added through the kernel module. Target determines in the rule how to process the matched data packets, so it implements the specific network security function in target. Nf_sockopt_ops is a data structure referenced in get/setssockopt by the system call. It allows you to add, delete, modify, and query rules in a user space. T

(bprm->cap_effective);/* To support inheritance of root-permissions and Suid-root * EXECU Tables under Compatibility Mode,We raise all three * capability sets for the file. * If only the real uid was 0, we only raise the inheritable * and permitted sets of the executable file . */if (!issecure (secure_noroot)) {if (Bprm->e_uid = = 0 | | current->uid = = 0) {cap_set_full (bprm->cap_inheritable ); Cap_set_full (bprm->cap_permitted);} if (Bprm->e_uid = = 0) cap_set_full (bprm->cap_effectiv

specified Schedule role calls the outgoing employee quota, the specified employee quota has been reached.②. AttentionBytes. When the rows are being processed, the minimum time limit is reached. For a long period of time, the computing workload is calculated as follows: the maximum number of rows is reached, and the maximum number of rows is reached. when there are too many threads,During the peak security period, the calculation is as follows.(3) Co

HTTP://WWW.IBM.COM/DEVELOPERWORKS/CN/LINUX/L-LSM/PART1/1. Related background: Why and whatIn recent years, Linux system has been widely concerned and applied by computer industry because of its excellent performance and stability, the flexibility and expansibility of open Source feature, and the lower cost. But in terms of security, the

code of a specific architecture Block Block I/O layer Crypto Encryption API Documentation Kernel source code documentation Drivers Device Driver Firmware Use the device firmware required by a driver FS VFS and independent File System Include Kernel header Init Kernel

The operating system kernel may be a micro kernel or a single kernel (which is sometimes called a macro kernel macrokernel ). These terms are defined as follows in a similar encapsulation: Single Kernel: Also knownMacro Kernel.

How is Linux composed?A: Linux is made up of user space and kernel spaceWhy divide user space and kernel space?A: For CPU architectures, each processor can have multiple modes, and Linux is a partition that takes into account the system'sSecurity, such as X86 can have 4 mode

Major kernel security updates in Ubuntu 14.04, fixing 26 Security Vulnerabilities Canonical released a major kernel Security Update for the Ubuntu 14.04 LTS (Trusty Tahr) Operating System Series today, solving more than 20 vulnerabilities and other problems. In today's Ubun

Compile the linux0.00 kernel (full Linux Kernel Analysis-based on the 0.12 kernel) I have bought a fully-analyzed Linux kernel written by Zhao Ke-based on the 0.12 kernel. It seems that

Linux Kernel Analysis (2) ---- kernel module introduction | simple kernel module implementation, linux ---- Linux Kernel Analysis (2) Yesterday we started

Linux kernel design and implementation-kernel synchronization and Linux kernel SynchronizationKernel SynchronizationSynchronization IntroductionSynchronization Concept Critical section: it is also called a critical section, which is a code segment for accessing and operating

Original address: Linux kernel source Code Analysis--Kernel boot (6) Image kernel boot (do_basic_setup function) (Linux-3.0 ARMv7) TekkamanninjaTransferred from: http://blog.chinaunix.net/uid-25909619-id-4938396.htmlAfter the basic analysis of the

Linux Kernel Design and Implementation of Reading Notes, Linux Kernel Chapter 3 Process Management 1. fork system calls are returned twice from the kernel: one is returned to the sub-process and one is returned to the parent process. the task_struct structure is allocated by

has all the permissions to access the underlying hardware device. In order to ensure that the user process can not directly manipulate the kernel, to ensure the security of the kernel, worry about the system to divide the virtual space into two parts, part of the kernel space, part of the user space. For the

Original address: Linux kernel source Code Analysis--Kernel boot (5) Image kernel boot (rest_init function) (Linux-3.0 ARMv7) TekkamanninjaTransferred from: http://blog.chinaunix.net/uid-25909619-id-4938395.htmlThe previous rough analysis of the Start_kernel function, which

embedded Linux development Kernel porting (i)--Kernel kernel introduction First,Linux Kernel1. Introduction to Linux kernelLinux kernel is a free and free, POSIX-compliant Unix-like ope

Original address: Linux kernel source Code Analysis--Kernel boot (4) Image kernel boot (setup_arch function) (Linux-3.0 ARMv7) TekkamanninjaTransferred from: http://blog.chinaunix.net/uid-25909619-id-4938393.htmlIn the analysis of the Start_kernel function, there are schema-

Mark russinovich's inside Vista kernel Series Article. Mark is one of the founders of sysinternals. He is the author of many famous system tools and a master of Windows kernel. Not long ago, he accepted Microsoft's technical fellow position and participated in Windows kernel development. This article describes many new features such as Vista

Features of Linux kernel development Compared with applications in a user spaceProgramThere are many differences in development and kernel development. The most important differences include: 1) The C library cannot be accessed during kernel programming. 2) gnu c must be used for