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Diffstat (limited to 'pkg/sentry/fsimpl/devtmpfs/devtmpfs_test.go')
-rw-r--r--pkg/sentry/fsimpl/devtmpfs/devtmpfs_test.go122
1 files changed, 0 insertions, 122 deletions
diff --git a/pkg/sentry/fsimpl/devtmpfs/devtmpfs_test.go b/pkg/sentry/fsimpl/devtmpfs/devtmpfs_test.go
deleted file mode 100644
index b6d52c015..000000000
--- a/pkg/sentry/fsimpl/devtmpfs/devtmpfs_test.go
+++ /dev/null
@@ -1,122 +0,0 @@
-// Copyright 2020 The gVisor Authors.
-//
-// 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 devtmpfs
-
-import (
- "testing"
-
- "gvisor.dev/gvisor/pkg/abi/linux"
- "gvisor.dev/gvisor/pkg/fspath"
- "gvisor.dev/gvisor/pkg/sentry/contexttest"
- "gvisor.dev/gvisor/pkg/sentry/fsimpl/tmpfs"
- "gvisor.dev/gvisor/pkg/sentry/kernel/auth"
- "gvisor.dev/gvisor/pkg/sentry/vfs"
-)
-
-func TestDevtmpfs(t *testing.T) {
- ctx := contexttest.Context(t)
- creds := auth.CredentialsFromContext(ctx)
-
- vfsObj := &vfs.VirtualFilesystem{}
- if err := vfsObj.Init(); err != nil {
- t.Fatalf("VFS init: %v", err)
- }
- // Register tmpfs just so that we can have a root filesystem that isn't
- // devtmpfs.
- vfsObj.MustRegisterFilesystemType("tmpfs", tmpfs.FilesystemType{}, &vfs.RegisterFilesystemTypeOptions{
- AllowUserMount: true,
- })
- vfsObj.MustRegisterFilesystemType("devtmpfs", &FilesystemType{}, &vfs.RegisterFilesystemTypeOptions{
- AllowUserMount: true,
- })
-
- // Create a test mount namespace with devtmpfs mounted at "/dev".
- const devPath = "/dev"
- mntns, err := vfsObj.NewMountNamespace(ctx, creds, "tmpfs" /* source */, "tmpfs" /* fsTypeName */, &vfs.GetFilesystemOptions{})
- if err != nil {
- t.Fatalf("failed to create tmpfs root mount: %v", err)
- }
- defer mntns.DecRef()
- root := mntns.Root()
- defer root.DecRef()
- devpop := vfs.PathOperation{
- Root: root,
- Start: root,
- Path: fspath.Parse(devPath),
- }
- if err := vfsObj.MkdirAt(ctx, creds, &devpop, &vfs.MkdirOptions{
- Mode: 0755,
- }); err != nil {
- t.Fatalf("failed to create mount point: %v", err)
- }
- if err := vfsObj.MountAt(ctx, creds, "devtmpfs" /* source */, &devpop, "devtmpfs" /* fsTypeName */, &vfs.MountOptions{}); err != nil {
- t.Fatalf("failed to mount devtmpfs: %v", err)
- }
-
- a, err := NewAccessor(ctx, vfsObj, creds, "devtmpfs")
- if err != nil {
- t.Fatalf("failed to create devtmpfs.Accessor: %v", err)
- }
- defer a.Release()
-
- // Create "userspace-initialized" files using a devtmpfs.Accessor.
- if err := a.UserspaceInit(ctx); err != nil {
- t.Fatalf("failed to userspace-initialize devtmpfs: %v", err)
- }
- // Created files should be visible in the test mount namespace.
- abspath := devPath + "/fd"
- target, err := vfsObj.ReadlinkAt(ctx, creds, &vfs.PathOperation{
- Root: root,
- Start: root,
- Path: fspath.Parse(abspath),
- })
- if want := "/proc/self/fd"; err != nil || target != want {
- t.Fatalf("readlink(%q): got (%q, %v), wanted (%q, nil)", abspath, target, err, want)
- }
-
- // Create a dummy device special file using a devtmpfs.Accessor.
- const (
- pathInDev = "dummy"
- kind = vfs.CharDevice
- major = 12
- minor = 34
- perms = 0600
- wantMode = linux.S_IFCHR | perms
- )
- if err := a.CreateDeviceFile(ctx, pathInDev, kind, major, minor, perms); err != nil {
- t.Fatalf("failed to create device file: %v", err)
- }
- // The device special file should be visible in the test mount namespace.
- abspath = devPath + "/" + pathInDev
- stat, err := vfsObj.StatAt(ctx, creds, &vfs.PathOperation{
- Root: root,
- Start: root,
- Path: fspath.Parse(abspath),
- }, &vfs.StatOptions{
- Mask: linux.STATX_TYPE | linux.STATX_MODE,
- })
- if err != nil {
- t.Fatalf("failed to stat device file at %q: %v", abspath, err)
- }
- if stat.Mode != wantMode {
- t.Errorf("device file mode: got %v, wanted %v", stat.Mode, wantMode)
- }
- if stat.RdevMajor != major {
- t.Errorf("major device number: got %v, wanted %v", stat.RdevMajor, major)
- }
- if stat.RdevMinor != minor {
- t.Errorf("minor device number: got %v, wanted %v", stat.RdevMinor, minor)
- }
-}