Check in gVisor.

PiperOrigin-RevId: 194583126
Change-Id: Ica1d8821a90f74e7e745962d71801c598c652463

1 files changed, 46 insertions, 0 deletions

diff --git a/pkg/sentry/fs/ramfs/test/test.go b/pkg/sentry/fs/ramfs/test/test.go
new file mode 100644
index 000000000..fb669558f
--- /dev/null
+++ b/pkg/sentry/fs/ramfs/test/test.go
@@ -0,0 +1,46 @@
+// Copyright 2018 Google Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Package test provides a simple ramfs-based filesystem for use in testing.
+package test
+
+import (
+	"gvisor.googlesource.com/gvisor/pkg/sentry/context"
+	"gvisor.googlesource.com/gvisor/pkg/sentry/fs"
+	"gvisor.googlesource.com/gvisor/pkg/sentry/fs/ramfs"
+)
+
+// Dir is a simple ramfs.Dir that supports save/restore as-is.
+type Dir struct {
+	ramfs.Dir
+}
+
+// NewDir returns a simple ramfs directory with the passed contents.
+func NewDir(ctx context.Context, contents map[string]*fs.Inode, perms fs.FilePermissions) *Dir {
+	d := &Dir{}
+	d.InitDir(ctx, contents, fs.RootOwner, perms)
+	return d
+}
+
+// File is a simple ramfs.File that supports save/restore as-is.
+type File struct {
+	ramfs.File
+}
+
+// NewFile returns a simple ramfs File.
+func NewFile(ctx context.Context, perms fs.FilePermissions) *File {
+	f := &File{}
+	f.InitFile(ctx, fs.RootOwner, perms)
+	return f
+}