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Handle errors on close in config file write. 

I'm not sure if this fixes anything, however I have seen some weird
behavior on Windows where temp config files are left around and there
doesn't seem to be any errors reported.

Signed-off-by: Brian Goff <cpuguy83@gmail.com>
(cherry picked from commit d02173090f)
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
This commit is contained in:
Brian Goff 2020-06-19 11:14:14 -07:00
parent 14010c88b4
commit aaf1170520
1 changed files with 16 additions and 4 deletions
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20
cli/config/configfile/file.go
View File

@ -13,6 +13,7 @@ import (
"github.com/docker/cli/cli/config/credentials"
"github.com/docker/cli/cli/config/types"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
)
const (
@ -177,7 +178,7 @@ func (configFile *ConfigFile) SaveToWriter(writer io.Writer) error {
}
// Save encodes and writes out all the authorization information
func (configFile *ConfigFile) Save() error {
func (configFile *ConfigFile) Save() (retErr error) {
if configFile.Filename == "" {
return errors.Errorf("Can't save config with empty filename")
}
@ -190,15 +191,26 @@ func (configFile *ConfigFile) Save() error {
if err != nil {
return err
}
err = configFile.SaveToWriter(temp)
defer func() {
temp.Close()
if retErr != nil {
if err := os.Remove(temp.Name()); err != nil {
logrus.WithError(err).WithField("file", temp.Name()).Debug("Error cleaning up temp file")
}
}
}()
err = configFile.SaveToWriter(temp)
if err != nil {
os.Remove(temp.Name())
return err
}
if err := temp.Close(); err != nil {
return errors.Wrap(err, "error closing temp file")
}
// Try copying the current config file (if any) ownership and permissions
copyFilePermissions(configFile.Filename, temp.Name())
return os.Rename(temp.Name(), configFile.Filename)
}