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os: seek should invalidate any cached directory reads

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When we seek on the underlying FD, discard any directory entries
we've already read and cached. This makes sure we won't return
the same entry twice.

We already fixed this for Darwin in CL 209961.

Fixes #37161

Change-Id: I20e1ac8d751443135e67fb4c43c18d69befb643b
Reviewed-on: https://go-review.googlesource.com/c/go/+/219143
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This commit is contained in:
Keith Randall 2020-02-11 17:49:52 -08:00
parent a4f7b0879c
commit 529988d62c
7 changed files with 40 additions and 13 deletions
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2
src/os/dir_unix.go
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@ -26,8 +26,6 @@ const (
func (d *dirInfo) close() {}
func (f *File) seekInvalidate() {}
func (f *File) readdirnames(n int) (names []string, err error) {
// If this file has no dirinfo, create one.
if f.dirinfo == nil {