//sys	Setfsgid(gid int) (err error)
//sys	Setfsuid(uid int) (err error)
//sys	Shutdown(fd int, how int) (err error)
//sys	Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int64, err error)
//sys	statx(dirfd int, path string, flags int, mask int, stat *statx_t) (err error)

// makedev makes C dev_t from major and minor numbers the glibc way:

//sys	Setfsgid(gid int) (err error)
//sys	Setfsuid(uid int) (err error)
//sysnb	setrlimit(resource int, rlim *Rlimit) (err error) = SYS_SETRLIMIT
//sys	Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int64, err error)
//sys	Stat(path string, stat *Stat_t) (err error)
//sys	Statfs(path string, buf *Statfs_t) (err error)

//sys	setfsgid(gid int) (prev int, err error) = SYS_SETFSGID32
//sys	setfsuid(uid int) (prev int, err error) = SYS_SETFSUID32
//sys	Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int, err error)
//sys	Stat(path string, stat *Stat_t) (err error) = SYS_STAT64
//sys	SyncFileRange(fd int, off int64, n int64, flags int) (err error)

//sys	sendfile(outfd int, infd int, offset *int64, count int) (written int, err error)
//sys	setfsgid(gid int) (prev int, err error)
//sys	setfsuid(uid int) (prev int, err error)
//sys	Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int64, err error)
//sys	Stat(path string, stat *Stat_t) (err error)
//sys	Statfs(path string, buf *Statfs_t) (err error)
//sys	SyncFileRange(fd int, off int64, n int64, flags int) (err error)