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snapshot/overlay: prevent committing view

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Signed-off-by: Derek McGowan <derek@mcgstyle.net> (github: dmcgowan)
This commit is contained in:
Derek McGowan 2017-02-17 18:43:10 -08:00
parent ca56448263
commit 1723444ba2
1 changed files with 7 additions and 0 deletions
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7
snapshot/overlay/overlay.go
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@ -253,6 +253,13 @@ func (a *activeDir) setParent(name string) error {
}
func (a *activeDir) commit(name string, c *cache) error {
if _, err := os.Stat(filepath.Join(a.path, "fs")); err != nil {
if os.IsNotExist(err) {
return errors.New("cannot commit view")
}
return err
}
// TODO(stevvooe): This doesn't quite meet the current model. The new model
// is to copy all of this out and let the transaction continue. We don't
// really have tests for it yet, but this will be the spot to fix it.