Check in gVisor.

PiperOrigin-RevId: 194583126
Change-Id: Ica1d8821a90f74e7e745962d71801c598c652463

2 files changed, 77 insertions, 0 deletions

diff --git a/pkg/sentry/fs/ramfs/test/BUILD b/pkg/sentry/fs/ramfs/test/BUILD
new file mode 100644
index 000000000..074b0f5ad
--- /dev/null
+++ b/pkg/sentry/fs/ramfs/test/BUILD
@@ -0,0 +1,31 @@
+package(licenses = ["notice"])  # Apache 2.0
+
+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+load("//tools/go_stateify:defs.bzl", "go_stateify")
+
+go_stateify(
+    name = "test_state",
+    srcs = [
+        "test.go",
+    ],
+    out = "test_state.go",
+    package = "test",
+)
+
+go_library(
+    name = "test",
+    testonly = 1,
+    srcs = [
+        "test.go",
+        "test_state.go",
+    ],
+    importpath = "gvisor.googlesource.com/gvisor/pkg/sentry/fs/ramfs/test",
+    visibility = ["//pkg/sentry:internal"],
+    deps = [
+        "//pkg/sentry/context",
+        "//pkg/sentry/device",
+        "//pkg/sentry/fs",
+        "//pkg/sentry/fs/ramfs",
+        "//pkg/state",
+    ],
+)
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
+}