Tabla de Contenidos: “…Intro -- Table of Contents -- Preface -- Jon's Introduction -- Alessandro's Introduction -- Greg's Introduction -- Audience for This Book -- Organization of the Material -- Background Information -- Online Version and License -- Conventions Used in This Book -- Using Code Examples -- We'd Like to Hear from You -- Safari Enabled -- Acknowledgments -- Jon -- Alessandro -- Greg -- An Introduction to Device Drivers -- The Role of the Device Driver -- Splitting the Kernel -- Loadable Modules -- Classes of Devices and Modules -- Security Issues -- Version Numbering -- License Terms -- Joining the Kernel Development Community -- Overview of the Book -- Building and Running Modules -- Setting Up Your Test System -- The Hello World Module -- Kernel Modules Versus Applications -- User Space and Kernel Space -- Concurrency in the Kernel -- The Current Process -- A Few Other Details -- Compiling and Loading -- Compiling Modules -- Loading and Unloading Modules -- Version Dependency -- Platform Dependency -- The Kernel Symbol Table -- Preliminaries -- Initialization and Shutdown -- The Cleanup Function -- Error Handling During Initialization -- Module-Loading Races -- Module Parameters -- Doing It in User Space -- Quick Reference -- Char Drivers -- The Design of scull -- Major and Minor Numbers -- The Internal Representation of Device Numbers -- Allocating and Freeing Device Numbers -- Dynamic Allocation of Major Numbers -- Some Important Data Structures -- File Operations -- The file Structure -- The inode Structure -- Char Device Registration -- Device Registration in scull -- The Older Way -- open and release -- The open Method -- The release Method -- scull's Memory Usage -- read and write -- The read Method -- The write Method -- readv and writev -- Playing with the New Devices -- Quick Reference -- Debugging Techniques -- Debugging Support in the Kernel…”