Why does devfs allow unlinking /dev/*? (kern/139014)

[Bryan Drewery]

I see that devfs_remove() allows anything to be removed and always
returns 0.

This causes problems for package building as many ports will run 'gcc -o
/dev/null file.c' which removes /dev/null. Simple rm /dev/null also
works. Of course 'rm /dev/*' works as well.

After this is done, 'dev rule apply path <path> unhide' is needed to
restore the files.

Why is this allowed?

Does this belong on arch@ instead?

-- 
Regards,
Bryan Drewery

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