Move MakeFile/Dir from HostUtil to host_path vol

The MakeFile and MakeDir methods in the HostUtil interface only had one
caller -- the Host Path volume plugin. This patch relocates MakeFile and
MakeDir to the Host Path plugin itself.

Author: codenrhoden

pkg/util/mount/fake_hostutil.go

@@ -71,18 +71,6 @@ func (hu *FakeHostUtil) GetFileType(pathname string) (FileType, error) {
 	return FileType("Directory"), nil
 }
 
-// MakeDir creates a new directory.
-// No-op for testing
-func (hu *FakeHostUtil) MakeDir(pathname string) error {
-	return nil
-}
-
-// MakeFile creates a new file.
-// No-op for testing
-func (hu *FakeHostUtil) MakeFile(pathname string) error {
-	return nil
-}
-
 // PathExists checks if pathname exists.
 func (hu *FakeHostUtil) PathExists(pathname string) (bool, error) {
 	if _, ok := hu.Filesystem[pathname]; ok {

pkg/util/mount/hostutil.go

@@ -57,10 +57,6 @@ type HostUtils interface {
 	MakeRShared(path string) error
 	// GetFileType checks for file/directory/socket/block/character devices.
 	GetFileType(pathname string) (FileType, error)
-	// MakeFile creates an empty file.
-	MakeFile(pathname string) error
-	// MakeDir creates a new directory.
-	MakeDir(pathname string) error
 	// PathExists tests if the given path already exists
 	// Error is returned on any other error than "file not found".
 	PathExists(pathname string) (bool, error)

pkg/util/mount/hostutil_linux.go

@@ -140,27 +140,6 @@ func (hu *hostUtil) GetFileType(pathname string) (FileType, error) {
 	return getFileType(pathname)
 }
 
-func (hu *hostUtil) MakeDir(pathname string) error {
-	err := os.MkdirAll(pathname, os.FileMode(0755))
-	if err != nil {
-		if !os.IsExist(err) {
-			return err
-		}
-	}
-	return nil
-}
-
-func (hu *hostUtil) MakeFile(pathname string) error {
-	f, err := os.OpenFile(pathname, os.O_CREATE, os.FileMode(0644))
-	defer f.Close()
-	if err != nil {
-		if !os.IsExist(err) {
-			return err
-		}
-	}
-	return nil
-}
-
 func (hu *hostUtil) PathExists(pathname string) (bool, error) {
 	return utilpath.Exists(utilpath.CheckFollowSymlink, pathname)
 }

pkg/util/mount/hostutil_windows.go

@@ -91,29 +91,6 @@ func (hu *(hostUtil)) GetFileType(pathname string) (FileType, error) {
 	return getFileType(pathname)
 }
 
-// MakeFile creates a new directory
-func (hu *hostUtil) MakeDir(pathname string) error {
-	err := os.MkdirAll(pathname, os.FileMode(0755))
-	if err != nil {
-		if !os.IsExist(err) {
-			return err
-		}
-	}
-	return nil
-}
-
-// MakeFile creates an empty file
-func (hu *hostUtil) MakeFile(pathname string) error {
-	f, err := os.OpenFile(pathname, os.O_CREATE, os.FileMode(0644))
-	defer f.Close()
-	if err != nil {
-		if !os.IsExist(err) {
-			return err
-		}
-	}
-	return nil
-}
-
 // PathExists checks whether the path exists
 func (hu *hostUtil) PathExists(pathname string) (bool, error) {
 	return utilpath.Exists(utilpath.CheckFollowSymlink, pathname)

pkg/volume/hostpath/host_path.go

@@ -377,7 +377,7 @@ func (ftc *fileTypeChecker) IsFile() bool {
 }
 
 func (ftc *fileTypeChecker) MakeFile() error {
-	return ftc.hu.MakeFile(ftc.path)
+	return makeFile(ftc.path)
 }
 
 func (ftc *fileTypeChecker) IsDir() bool {
@@ -392,7 +392,7 @@ func (ftc *fileTypeChecker) IsDir() bool {
 }
 
 func (ftc *fileTypeChecker) MakeDir() error {
-	return ftc.hu.MakeDir(ftc.path)
+	return makeDir(ftc.path)
 }
 
 func (ftc *fileTypeChecker) IsBlock() bool {
@@ -470,3 +470,29 @@ func checkTypeInternal(ftc hostPathTypeChecker, pathType *v1.HostPathType) error
 
 	return nil
 }
+
+// makeDir creates a new directory.
+// If pathname already exists as a directory, no error is returned.
+// If pathname already exists as a file, an error is returned.
+func makeDir(pathname string) error {
+	err := os.MkdirAll(pathname, os.FileMode(0755))
+	if err != nil {
+		if !os.IsExist(err) {
+			return err
+		}
+	}
+	return nil
+}
+
+// makeFile creates an empty file.
+// If pathname already exists, whether a file or directory, no error is returned.
+func makeFile(pathname string) error {
+	f, err := os.OpenFile(pathname, os.O_CREATE, os.FileMode(0644))
+	defer f.Close()
+	if err != nil {
+		if !os.IsExist(err) {
+			return err
+		}
+	}
+	return nil
+}