[libc-commits] [libc] [libc] add ioctl (PR #141393)

[Michael Jones via libc-commits]

michaelrj-google wrote:

The code changes look good to me, but the premerge checks are failing. The error numbers are 25 (ENOTTY) and 9 (EBADF), so it's probably to do with running this on a buildbot instead of locally. It might be best to use `open` to create a file descriptor instead of using `0` and `3`.

https://github.com/llvm/llvm-project/pull/141393