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differ: fix deadlock on commit error

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Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
This commit is contained in:
Tonis Tiigi
2019-04-25 17:50:17 -07:00
parent 810b3c37bb
commit 5b9bd993a8
2 changed files with 6 additions and 4 deletions
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5
diff/walking/differ.go
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@@ -106,14 +106,15 @@ func (s *walkingDiff) Compare(ctx context.Context, lower, upper []mount.Mount, o
}
}()
if !newReference {
if err := cw.Truncate(0); err != nil {
if err = cw.Truncate(0); err != nil {
return err
}
}
if isCompressed {
dgstr := digest.SHA256.Digester()
compressed, err := compression.CompressStream(cw, compression.Gzip)
var compressed io.WriteCloser
compressed, err = compression.CompressStream(cw, compression.Gzip)
if err != nil {
return errors.Wrap(err, "failed to get compressed stream")
}