looking for error codes

[Andriy Gapon]

I am looking for error codes that would unambiguously signal that a disk drive has
readonly or write-protected media and that disk drive has no media at the moment.
I foresee these error codes being used mostly between disk peripheral drivers and
filesystem drivers.

I will appreciate your suggestions.

P.S.
I see that Linux uses EROFS and ENOMEDIUM for these purposes.
I am not sure about EROFS in this role.
And we don't have ENOMEDIUM (nor EMEDIUMTYPE).
-- 
Andriy Gapon