The Design and Implementation of the FreeBSD Operating System

Preface. About the Authors. I. OVERVIEW. 1. History and Goals. History of the UNIX System. BSD and Other Systems. The Transition of BSD to Open Source. The FreeBSD Development Model. References. 2. Design Overview of FreeBSD. FreeBSD Facilities and the Kernel. Kernel Organization. Kernel Services. Process Management. Memory Management. I/O System. Devices. Filesystems. Network Filesystem. Terminals. Interprocess Communication. Network Communication. Network Implementation. System Operation. Exercises. References. 3. Kernel Services. Kernel Organization. System Calls. Traps and Interrupts. Clock Interrupts. Memory-Management Services. Timing Services. User, Group, and Other Identifiers. Resource Services. System-Operation Services. Accounting. Exercises. References. II. PROCESSES. 4. Process Management. Introduction to Process Management. Process State. Context Switching. Thread Scheduling. Process Creation. Process Termination. Signals. Process Groups and Sessions. Jails. Process Debugging. Exercises. References. 5. Memory Management. Terminology. Overview of the FreeBSD Virtual-Memory System. Kernel Memory Management. Per-Process Resources. Shared Memory. Creation of a New Process. Execution of a File. Process Manipulation of Its Address Space. Termination of a Process. The Pager Interface. Paging. Page Replacement. Portability. Exercises. References. III. I/O SYSTEM. 6. I/O System Overview. I/O Mapping from User to Device. Character Devices. Disk Devices. Descriptor Management and Services. The Virtual-Filesystem Interface. Filesystem-Independent Services. Stackable Filesystems. Exercises. References. 7. Devices. Device Overview. The GEOM Layer. The CAM Layer. The ATA Layer. Device Configuration. Exercises. References. 8. Local Filesystems. Hierarchical Filesystem Management. Structure of an Inode. Naming. Quotas. File Locking. Soft Updates. Filesystem Snapshots. The Local Filestore. The Berkeley Fast Filesystem. Exercises. References. 9. The Network Filesystem.

Marshall Kirk McKusick writes books and articles, consults, and teaches classes on UNIX- and BSD-related subjects. While at the University of California at Berkeley, he implemented the 4.2BSD fast file system, and was the research computer scientist at the Berkeley Computer Systems Research Group (CSRG) overseeing the development and release of 4.3BSD and 4.4BSD. He has twice served as the president of the board of the Usenix Association. George V. Neville-Neil works on network and operating system code for fun and profit and teaches programming. He also serves on the editorial board of Queue magazine and is a member of the Usenix Association, ACM, and IEEE.