code review 5298073: os: use error, io.EOF

src/pkg/os/dir_unix.go

 // Copyright 2009 The Go Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 // +build darwin freebsd linux openbsd
 
 package os
 
 import (
+        "io"
         "syscall"
 )
 
 const (
         blockSize = 4096
 )
 
 // Readdirnames reads and returns a slice of names from the directory f.
 //
 // If n > 0, Readdirnames returns at most n names. In this case, if
 // Readdirnames returns an empty slice, it will return a non-nil error
 // explaining why. At the end of a directory, the error is os.EOF.
 //
 // If n <= 0, Readdirnames returns all the names from the directory in
 // a single slice. In this case, if Readdirnames succeeds (reads all
 // the way to the end of the directory), it returns the slice and a
 // nil os.Error. If it encounters an error before the end of the
 // directory, Readdirnames returns the names read until that point and
 // a non-nil error.
-func (f *File) Readdirnames(n int) (names []string, err Error) {
+func (f *File) Readdirnames(n int) (names []string, err error) {
         // If this file has no dirinfo, create one.
         if f.dirinfo == nil {
                 f.dirinfo = new(dirInfo)
                 // The buffer must be at least a block long.
                 f.dirinfo.buf = make([]byte, blockSize)
         }
         d := f.dirinfo
 
         size := n
         if size <= 0 {
@@ skipping 16 matching lines @@
                         }
                 }
 
                 // Drain the buffer
                 var nb, nc int
                 nb, nc, names = syscall.ParseDirent(d.buf[d.bufp:d.nbuf], n, names)
                 d.bufp += nb
                 n -= nc
         }
         if n >= 0 && len(names) == 0 {
-                return names, EOF
+                return names, io.EOF
         }
         return names, nil
 }