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Fix gometalinter issues

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Signed-off-by: Madhu Rajanna <mrajanna@redhat.com>
This commit is contained in:
Madhu Rajanna
2019-01-29 11:19:16 +05:30
parent ca2e475296
commit 50ba8ed446
8 changed files with 227 additions and 146 deletions
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27
pkg/rbd/nodeserver.go
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@ -215,11 +215,20 @@ func (ns *NodeServer) NodeUnpublishVolume(ctx context.Context, req *csi.NodeUnpu
return nil, status.Error(codes.Internal, err.Error())
}
if err = ns.unmount(targetPath, devicePath, cnt); err != nil {
return nil, err
}
return &csi.NodeUnpublishVolumeResponse{}, nil
}
func (ns *NodeServer) unmount(targetPath, devicePath string, cnt int) error {
var err error
// Bind mounted device needs to be resolved by using resolveBindMountedBlockDevice
if devicePath == "devtmpfs" {
devicePath, err = resolveBindMountedBlockDevice(targetPath)
if err != nil {
return nil, status.Error(codes.Internal, err.Error())
return status.Error(codes.Internal, err.Error())
}
glog.V(4).Infof("NodeUnpublishVolume: devicePath: %s, (original)cnt: %d\n", devicePath, cnt)
// cnt for GetDeviceNameFromMount is broken for bind mouted device,
@ -235,30 +244,27 @@ func (ns *NodeServer) NodeUnpublishVolume(ctx context.Context, req *csi.NodeUnpu
err = ns.mounter.Unmount(targetPath)
if err != nil {
glog.V(3).Infof("failed to unmount targetPath: %s with error: %v", targetPath, err)
return nil, status.Error(codes.Internal, err.Error())
return status.Error(codes.Internal, err.Error())
}
cnt--
if cnt != 0 {
// TODO should this be fixed not to success, so that driver can retry unmounting?
return &csi.NodeUnpublishVolumeResponse{}, nil
return nil
}
// Unmapping rbd device
if err = detachRBDDevice(devicePath); err != nil {
glog.V(3).Infof("failed to unmap rbd device: %s with error: %v", devicePath, err)
return nil, err
return err
}
// Remove targetPath
if err = os.RemoveAll(targetPath); err != nil {
glog.V(3).Infof("failed to remove targetPath: %s with error: %v", targetPath, err)
return nil, err
}
return &csi.NodeUnpublishVolumeResponse{}, nil
return err
}
func resolveBindMountedBlockDevice(mountPath string) (string, error) {
// #nosec
cmd := exec.Command("findmnt", "-n", "-o", "SOURCE", "--first-only", "--target", mountPath)
@ -275,12 +281,13 @@ func parseFindMntResolveSource(out string) (string, error) {
// cut trailing newline
out = strings.TrimSuffix(out, "\n")
// Check if out is a mounted device
reMnt := regexp.MustCompile(`^(/[^/]+(?:/[^/]*)*)$`)
reMnt := regexp.MustCompile("^(/[^/]+(?:/[^/]*)*)$")
if match := reMnt.FindStringSubmatch(out); match != nil {
return match[1], nil
}
// Check if out is a block device
reBlk := regexp.MustCompile(`^devtmpfs\\[(/[^/]+(?:/[^/]*)*)\\]$`)
// nolint
reBlk := regexp.MustCompile("^devtmpfs\\[(/[^/]+(?:/[^/]*)*)\\]$")
if match := reBlk.FindStringSubmatch(out); match != nil {
return fmt.Sprintf("/dev%s", match[1]), nil
}