Gerardo Santana’s Binpatch System is a fantastic way to keep your OpenBSD sytems up to date.
With Binpatch, you create a directory structure not unlike the OpenBSD ports tree. For each update, you create a section declaring the patch and a section to build the binpatch. Take the i386-only 004 Errata, for example. Append PATCH_I386= with “004_i386machdep” so the line looks like “PATCH_I386=003_i386pmap 004_i386machdep”. Then, create a make directive for the patch using “004_i386machdep: _kernel” so binpatch will use its built-in kernel building routine. You can see my entire Makefile for the full effect. Now you’re ready to get started building the binpatch for 004…
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