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plugin/file: z.Expired needs be read under a rlock (#3056)

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Read lock before reading the Expired field of a zone.

Fixes: #3053

Signed-off-by: Miek Gieben <miek@miek.nl>
This commit is contained in:
Miek Gieben
2019-07-27 15:06:50 +00:00
committed by Yong Tang
parent 7a3371d740
commit 92a636df53
2 changed files with 5 additions and 2 deletions
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5
plugin/file/file.go
View File

@@ -69,7 +69,10 @@ func (f File) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (i
return dns.RcodeSuccess, nil return dns.RcodeSuccess, nil
} }
if z.Expired != nil && *z.Expired { z.RLock()
exp := z.Expired
z.RUnlock()
if exp != nil && *exp {
log.Errorf("Zone %s is expired", zone) log.Errorf("Zone %s is expired", zone)
return dns.RcodeServerFailure, nil return dns.RcodeServerFailure, nil
} }

2
plugin/file/zone.go
View File

@@ -22,13 +22,13 @@ type Zone struct {
file string file string
*tree.Tree *tree.Tree
Apex Apex
Expired *bool
sync.RWMutex sync.RWMutex
TransferTo []string TransferTo []string
StartupOnce sync.Once StartupOnce sync.Once
TransferFrom []string TransferFrom []string
Expired *bool
ReloadInterval time.Duration ReloadInterval time.Duration
reloadShutdown chan bool reloadShutdown chan bool