statvfs opened the path with O_PATH, which macOS does not have, so
libSceLibcInternal did not build there. No open mode stands in for it:
on macOS O_RDONLY and O_EVTONLY fail with EACCES on a file or directory
without read permission, and O_SEARCH on such a directory, where
FreeBSD's statvfs only needs search permission on the path.
On macOS statvfs now asks the host statvfs by path, which needs exactly
that, fills the kernel statfs the way _fstatfs fills it from the host
fstatvfs, and converts it with the code fstatvfs uses. A path that must
name a directory and does not fails with ENOTDIR, as the O_DIRECTORY open
does elsewhere. Other hosts are unchanged.
al3w0f205