Commit c69d6345 authored by Russ Cox's avatar Russ Cox

os: make ReadAt comment clearer

Fixes #2486.

R=golang-dev, hanwen
CC=golang-dev
https://golang.org/cl/5417064
parent 11e73b89
......@@ -70,8 +70,8 @@ func (file *File) Read(b []byte) (n int, err error) {
// ReadAt reads len(b) bytes from the File starting at byte offset off.
// It returns the number of bytes read and the error, if any.
// EOF is signaled by a zero count with err set to io.EOF.
// ReadAt always returns a non-nil error when n != len(b).
// ReadAt always returns a non-nil error when n < len(b).
// At end of file, that error is io.EOF.
func (file *File) ReadAt(b []byte, off int64) (n int, err error) {
if file == nil {
return 0, EINVAL
......
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