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Code Issues Releases Wiki Activity

Atomic writes

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This commit is contained in:
Josh Curl
2016-06-02 14:32:26 -07:00
parent 97344cc535
commit 4f48569cb2
6 changed files with 34 additions and 20 deletions
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8
cmd/cloudinit/cloudinit.go
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@@ -18,7 +18,6 @@ package cloudinit
import (
"errors"
"flag"
"io/ioutil"
"os"
"strings"
"sync"
@@ -40,6 +39,7 @@ import (
"github.com/coreos/coreos-cloudinit/system"
"github.com/rancher/netconf"
rancherConfig "github.com/rancher/os/config"
"github.com/rancher/os/util"
)
const (
@@ -71,13 +71,13 @@ func saveFiles(cloudConfigBytes, scriptBytes []byte, metadata datasource.Metadat
if len(scriptBytes) > 0 {
log.Infof("Writing to %s", rancherConfig.CloudConfigScriptFile)
if err := ioutil.WriteFile(rancherConfig.CloudConfigScriptFile, scriptBytes, 500); err != nil {
if err := util.WriteFileAtomic(rancherConfig.CloudConfigScriptFile, scriptBytes, 500); err != nil {
log.Errorf("Error while writing file %s: %v", rancherConfig.CloudConfigScriptFile, err)
return err
}
}
if err := ioutil.WriteFile(rancherConfig.CloudConfigBootFile, cloudConfigBytes, 400); err != nil {
if err := util.WriteFileAtomic(rancherConfig.CloudConfigBootFile, cloudConfigBytes, 400); err != nil {
return err
}
log.Infof("Written to %s:\n%s", rancherConfig.CloudConfigBootFile, string(cloudConfigBytes))
@@ -87,7 +87,7 @@ func saveFiles(cloudConfigBytes, scriptBytes []byte, metadata datasource.Metadat
return err
}
if err = ioutil.WriteFile(rancherConfig.MetaDataFile, metaDataBytes, 400); err != nil {
if err = util.WriteFileAtomic(rancherConfig.MetaDataFile, metaDataBytes, 400); err != nil {
return err
}
log.Infof("Written to %s:\n%s", rancherConfig.MetaDataFile, string(metaDataBytes))