When writing drivers, you cannot in general use routines which are from the c library. There are two types of application programming interface api in the linux. The joystick driver for linux provides support for a variety of joysticks and similar devices. Core api documentation the linux kernel documentation. If you install the full sources, put the kernel tarball in a directory where you have permissions eg. The kernel administration guide documents tasks for maintaining the red hat enterprise linux 7 kernel. Linux kernel and driver development training linux kernel bootlin.
In december 2003, with the release of kernel version 2. The current standards specify only an application programming interface api. For more details see the file copying in the source distribution of linux. The kernel offers a wide variety of interfaces to support the development of device drivers.
This is the beginning of a manual for core kernel apis. This release, includes information on using kpatch, managing kernel. To avoid these two problems, i highly recommend that you download, compile and. The linux kernel is a free and opensource, monolithic, unixlike operating system kernel. A minimum uncompressed linux kernel just sizes 12 mb. As far as inkernel apis are regarded, theres no guarantee of stability. Chapter 2, requirements for building and using the kernel. Both updates are massive, with well over 100 fixes in each read more at lwn. This document is an only somewhat organized collection of some of those interfaces it will hopefully get better over time. The linux driver implementers api guide linux kernel. I am a 100% newbie and im reading understanding the linux kernel. Understanding the linux virtual memory manager pdf. The behaviour of these functions may vary slightly from those. The linux kernel api this documentation is free software.
Public license as published by the free software foundation. Provide a set of portable, architecture and hardware independent apis to allow user. In some cases you might want to compile your own kernel that suits your needs better than. The linux kernel provides several interfaces to userspace applications that are used for different purposes and that have different properties by design. Kernel administration guide red hat enterprise linux 7. String conversions string manipulation bit operations. Here you can find the latest docbooks generated from the linux kernel source. For information on hardware operations, refer to the ehci spec. Dont hesitate to copy and paste commands from the pdf slides and labs. Some of the functions have been found generally useful and they are listed below.
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