Kernel Normal Form

Kernel normal form, or KNF, is the coding style used in the development of code for the BSD operating systems. Based on the original KNF concept from the Computer Systems Research Group, it dictates a programming style to which contributed code should adhere prior to its inclusion into the codebase. KNF started out as a codification of how Ken Thompson and Dennis Ritchie formatted the original UNIX C source code. It describes such things as how to name variables, use indents and the use of ANSI C or K&R C code styles. Each BSD variant has its own KNF rules, which have evolved over time to differ from each other in small ways.

See also

• Programming style
• Indent style

External links

• style(9): Kernel source file style guide – DragonFly BSD System Kernel Interfaces Manual
• style(9): Kernel source file style guide – FreeBSD Kernel Developer's Manual
• style(9): Kernel source file style guide (KNF) – MirOS BSD i386 Kernel Internals Manual
• style(9): Kernel source file style guide (KNF) – OpenBSD Kernel Developer's Manual
• The NetBSD source code style guide