From 5a91dbe34ed658ac981b792b8a905200459ef422 Mon Sep 17 00:00:00 2001
From: GoEdgeLab <goedgecloud@gmail.com>
Date: Thu, 17 Feb 2022 17:38:56 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E5=A4=8D=E6=96=87=E4=BB=B6=E5=8F=A5?=
 =?UTF-8?q?=E6=9F=84=E7=BC=93=E5=AD=98=E5=8F=AF=E8=83=BD=E9=87=8D=E5=A4=8D?=
 =?UTF-8?q?=E5=8A=A0=E5=85=A5=E7=9A=84Bug?=
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---
 internal/caches/reader_file.go | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/internal/caches/reader_file.go b/internal/caches/reader_file.go
index aabc100..781b64f 100644
--- a/internal/caches/reader_file.go
+++ b/internal/caches/reader_file.go
@@ -23,6 +23,8 @@ type FileReader struct {
 	headerSize   int
 	bodySize     int64
 	bodyOffset   int64
+
+	isClosed bool
 }
 
 func NewFileReader(fp *os.File) *FileReader {
@@ -326,6 +328,11 @@ func (this *FileReader) ReadBodyRange(buf []byte, start int64, end int64, callba
 
 func (this *FileReader) Close() error {
 	if this.openFileCache != nil {
+		if this.isClosed {
+			return nil
+		}
+		this.isClosed = true
+
 		if this.openFile != nil {
 			this.openFileCache.Put(this.fp.Name(), this.openFile)
 		} else {
@@ -347,5 +354,6 @@ func (this *FileReader) readToBuff(fp *os.File, buf []byte) (ok bool, err error)
 
 func (this *FileReader) discard() error {
 	_ = this.fp.Close()
+	this.isClosed = true
 	return os.Remove(this.fp.Name())
 }