CheerpX returns EINVAL for unimplemented TCGETS2/TCSETS2

[NiltonVolpato]

CheerpX doesn't implement the new TCGETS2/TCSETS2 and only supports TCGETS/TCSETS. However it notifies the caller by returning EINVAL (which implies this is a supported call but the argument you used is invalid) instead of the more appropriate ENOTTY (which means this operation does not apply).

Regardless of this being a bug or not, it's pretty uncommon and non-standard, especially for linux. So, returning ENOTTY would be more well supported.

See this PR, it has more details:
bytecodealliance/rustix#1573

[saarikoski-jules]

Thanks for reporting this issue. We've just released CheerpX 1.2.7 that implements the missing TCGETS2/TCSETS2 calls, which should solve your issue.