The BSD kernels do not have nearly as many APIs that employ variable-length special-character-terminated strings that have to be parsed from human-readable form

The BSD kernels do not have nearly as many APIs that employ variable-length special-character-terminated strings that have to be parsed from human-readable forms, however. Whilst this is common for things like procfs in the Linux world, the BSDs favour general purpose interfaces like sysctl(3) where data are transferred in machine-parseable forms rather than human-readable ones. So "all over the BSDs" rather glosses over the fact that whilst common in applications code, there's less need for these sorts of string functions in the kernel. (And it is the Linux kernel that is the headlined subject here.) strlcpy() is in libkern, but it's not anywhere near as frequent in the kernel as it is in applications code.