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*: initial update to kube 1.8

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Signed-off-by: Antonio Murdaca <runcom@redhat.com>
This commit is contained in:
Antonio Murdaca 2017-09-26 16:23:09 +02:00
parent 2453222695
commit d6e819133d
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GPG key ID: B2BEAD150DE936B9
1237 changed files with 84117 additions and 564982 deletions
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30
vendor/k8s.io/kubernetes/pkg/util/io/writer.go generated vendored
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@ -28,6 +28,7 @@ import (
// Writer is an interface which allows to write data to a file.
type Writer interface {
// WriteFile mimics ioutil.WriteFile.
WriteFile(filename string, data []byte, perm os.FileMode) error
}
@ -36,31 +37,32 @@ type Writer interface {
type StdWriter struct {
}
// WriteFile directly calls ioutil.WriteFile.
func (writer *StdWriter) WriteFile(filename string, data []byte, perm os.FileMode) error {
return ioutil.WriteFile(filename, data, perm)
}
// Alternative implementation of Writer interface that allows writing data to file
// using nsenter command.
// NsenterWriter is implementation of Writer interface that allows writing data
// to file using nsenter command.
// If a program (e.g. kubelet) runs in a container it may want to write data to
// a mounted device. Since in Docker, mount propagation mode is set to private,
// it will not see the mounted device in its own namespace. To work around this
// limitaion one has to first enter hosts namespace (by using 'nsenter') and only
// then write data.
type NsenterWriter struct {
}
// limitation one has to first enter hosts namespace (by using 'nsenter') and
// only then write data.
type NsenterWriter struct{}
// TODO: should take a writer, not []byte
// WriteFile calls 'nsenter cat - > <the file>' and 'nsenter chmod' to create a
// file on the host.
func (writer *NsenterWriter) WriteFile(filename string, data []byte, perm os.FileMode) error {
cmd := "nsenter"
base_args := []string{
baseArgs := []string{
"--mount=/rootfs/proc/1/ns/mnt",
"--",
}
echo_args := append(base_args, "sh", "-c", fmt.Sprintf("cat > %s", filename))
glog.V(5).Infof("Command to write data to file: %v %v", cmd, echo_args)
command := exec.Command(cmd, echo_args...)
echoArgs := append(baseArgs, "sh", "-c", fmt.Sprintf("cat > %s", filename))
glog.V(5).Infof("Command to write data to file: %v %v", cmd, echoArgs)
command := exec.Command(cmd, echoArgs...)
command.Stdin = bytes.NewBuffer(data)
outputBytes, err := command.CombinedOutput()
if err != nil {
@ -68,9 +70,9 @@ func (writer *NsenterWriter) WriteFile(filename string, data []byte, perm os.Fil
return err
}
chmod_args := append(base_args, "chmod", fmt.Sprintf("%o", perm), filename)
glog.V(5).Infof("Command to change permissions to file: %v %v", cmd, chmod_args)
outputBytes, err = exec.Command(cmd, chmod_args...).CombinedOutput()
chmodArgs := append(baseArgs, "chmod", fmt.Sprintf("%o", perm), filename)
glog.V(5).Infof("Command to change permissions to file: %v %v", cmd, chmodArgs)
outputBytes, err = exec.Command(cmd, chmodArgs...).CombinedOutput()
if err != nil {
glog.Errorf("Output from chmod command: %v", string(outputBytes))
return err