March 26, 2007
Creating OpenBSD Binary Patches in a Chroot Environment
Unlike other operating systems, patches for the OpenBSD base system are distributed as source code patches. These patches are usually applied by compiling and installing them onto the target system. While that upgrade procedure is well-documented, it is not always suitable for certain systems that do not have the OpenBSD compiler set installed for various reasons such as disk space constraints. To fill this gap, open source projects like binpatch were started to allow administrators to create binary patches using the BSD make system. This article proposes an alternative method to build binary patches using a chroot environment in an attempt to more closely mirror the instructions given in the OpenBSD patch files.