bufp := copyBufPool.Get().(*[]byte)
	buf := *bufp
	defer copyBufPool.Put(bufp)

	return io.CopyBuffer(dst, src, buf)
}

// SameFile returns if the files are same.
func SameFile(fi1, fi2 os.FileInfo) bool {
	if !os.SameFile(fi1, fi2) {
		return false
	}
	if !fi1.ModTime().Equal(fi2.ModTime()) {
		return false
	}
	if fi1.Mode() != fi2.Mode() {
		return false
	}

pkg os, func Lstat(string) (FileInfo, error)
pkg os, func Mkdir(string, FileMode) error
pkg os, func MkdirAll(string, FileMode) error
pkg os, func OpenFile(string, int, FileMode) (*File, error)
pkg os, func SameFile(FileInfo, FileInfo) bool
pkg os, func Stat(string) (FileInfo, error)
pkg os, method (*File) Chmod(FileMode) error
pkg os, method (*File) Readdir(int) ([]FileInfo, error)
pkg os, method (*File) Stat() (FileInfo, error)

pkg syscall (windows-amd64), type ProcessEntry32 struct, Threads uint32
pkg syscall (windows-amd64), type ProcessEntry32 struct, Usage uint32

# CL 127740043 os: make SameFile handle paths like c:a.txt properly, Alex Brainman <******@****.***>
pkg syscall (windows-386), func FullPath(string) (string, error)
pkg syscall (windows-amd64), func FullPath(string) (string, error)