The following functions were replaced with their *at variants or
similar:
- lstat -> lstat -> fstatat
- stat -> stat -> fstatat
- fstat -> fstatat
- fchmod -> fchmodat
- fchown -> fchownat
- lchown -> fchownat
- mkfifo -> mkfifoat
- open -> openat
- renameat -> renameat2
- rmdir -> unlinkat
- unlink -> unlinkat
- symlink-> symlinkat
The `open_flags` logic for fstatat was redundant, as this is already
handled (and better so) in `openat2`.
Additionally, the fstatat test succeeds in os-test, and no longer
returns EINVAL. This is because `O_SYMLINK` is no longer
unconditionally passed like it was before. This is a problem because
redoxfs returns EINVAL if a node isn't a symlink but set `O_SYMLINK`.
Connor-GH
e2486379b1