I follow you work for some time now and its just another nice implementation.
I hope this will find its way to being a library eventually. I had situations, when i did similar things just not as holistic and clean.
Also compliments for you structured commenting.

i plan to tidy this up and submit it to the bsd projects, for their libc implementations. i think this should be in libc

a few currently hardcoded checks could be removed, or made configurable, but i t's pretty much all there

it's an obsessively over-engineered implementation, to be sure. i can rest comfortable, knowing that my Intel GbE NVM configs will never be corrupted by this tool.

idk... isn't 'pure libc' an indicator for living on the edge?
being an adventurous creature?
better have a new libSafe if you want your file r/w to be boring.

i tend to avoid using large libraries. i just implement what i need. better to be small and portable.

'pure libc' is the 'holding your head out of the trainwindow before entering a tunnel'.

okay i am done now.

how else are you going to properly take in the sights?