1 files changed, 0 insertions, 272 deletions
diff --git a/pkg/sentry/fs/mount_test.go b/pkg/sentry/fs/mount_test.go
deleted file mode 100644
index a3d10770b..000000000
--- a/pkg/sentry/fs/mount_test.go
+++ /dev/null
@@ -1,272 +0,0 @@
-// Copyright 2018 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 fs
-
-import (
-	"fmt"
-	"testing"
-
-	"gvisor.dev/gvisor/pkg/sentry/contexttest"
-)
-
-// cacheReallyContains iterates through the dirent cache to determine whether
-// it contains the given dirent.
-func cacheReallyContains(cache *DirentCache, d *Dirent) bool {
-	for i := cache.list.Front(); i != nil; i = i.Next() {
-		if i == d {
-			return true
-		}
-	}
-	return false
-}
-
-func mountPathsAre(root *Dirent, got []*Mount, want ...string) error {
-	gotPaths := make(map[string]struct{}, len(got))
-	gotStr := make([]string, len(got))
-	for i, g := range got {
-		if groot := g.Root(); groot != nil {
-			name, _ := groot.FullName(root)
-			groot.DecRef()
-			gotStr[i] = name
-			gotPaths[name] = struct{}{}
-		}
-	}
-	if len(got) != len(want) {
-		return fmt.Errorf("mount paths are different, got: %q, want: %q", gotStr, want)
-	}
-	for _, w := range want {
-		if _, ok := gotPaths[w]; !ok {
-			return fmt.Errorf("no mount with path %q found", w)
-		}
-	}
-	return nil
-}
-
-// TestMountSourceOnlyCachedOnce tests that a Dirent that is mounted over only ends
-// up in a single Dirent Cache. NOTE(b/63848693): Having a dirent in multiple
-// caches causes major consistency issues.
-func TestMountSourceOnlyCachedOnce(t *testing.T) {
-	ctx := contexttest.Context(t)
-
-	rootCache := NewDirentCache(100)
-	rootInode := NewMockInode(ctx, NewMockMountSource(rootCache), StableAttr{
-		Type: Directory,
-	})
-	mm, err := NewMountNamespace(ctx, rootInode)
-	if err != nil {
-		t.Fatalf("NewMountNamespace failed: %v", err)
-	}
-	rootDirent := mm.Root()
-	defer rootDirent.DecRef()
-
-	// Get a child of the root which we will mount over.  Note that the
-	// MockInodeOperations causes Walk to always succeed.
-	child, err := rootDirent.Walk(ctx, rootDirent, "child")
-	if err != nil {
-		t.Fatalf("failed to walk to child dirent: %v", err)
-	}
-	child.maybeExtendReference() // Cache.
-
-	// Ensure that the root cache contains the child.
-	if !cacheReallyContains(rootCache, child) {
-		t.Errorf("wanted rootCache to contain child dirent, but it did not")
-	}
-
-	// Create a new cache and inode, and mount it over child.
-	submountCache := NewDirentCache(100)
-	submountInode := NewMockInode(ctx, NewMockMountSource(submountCache), StableAttr{
-		Type: Directory,
-	})
-	if err := mm.Mount(ctx, child, submountInode); err != nil {
-		t.Fatalf("failed to mount over child: %v", err)
-	}
-
-	// Walk to the child again.
-	child2, err := rootDirent.Walk(ctx, rootDirent, "child")
-	if err != nil {
-		t.Fatalf("failed to walk to child dirent: %v", err)
-	}
-
-	// Should have a different Dirent than before.
-	if child == child2 {
-		t.Fatalf("expected %v not equal to %v, but they are the same", child, child2)
-	}
-
-	// Neither of the caches should no contain the child.
-	if cacheReallyContains(rootCache, child) {
-		t.Errorf("wanted rootCache not to contain child dirent, but it did")
-	}
-	if cacheReallyContains(submountCache, child) {
-		t.Errorf("wanted submountCache not to contain child dirent, but it did")
-	}
-}
-
-func TestAllMountsUnder(t *testing.T) {
-	ctx := contexttest.Context(t)
-
-	rootCache := NewDirentCache(100)
-	rootInode := NewMockInode(ctx, NewMockMountSource(rootCache), StableAttr{
-		Type: Directory,
-	})
-	mm, err := NewMountNamespace(ctx, rootInode)
-	if err != nil {
-		t.Fatalf("NewMountNamespace failed: %v", err)
-	}
-	rootDirent := mm.Root()
-	defer rootDirent.DecRef()
-
-	// Add mounts at the following paths:
-	paths := []string{
-		"/foo",
-		"/foo/bar",
-		"/foo/bar/baz",
-		"/foo/qux",
-		"/waldo",
-	}
-
-	var maxTraversals uint
-	for _, p := range paths {
-		maxTraversals = 0
-		d, err := mm.FindLink(ctx, rootDirent, nil, p, &maxTraversals)
-		if err != nil {
-			t.Fatalf("could not find path %q in mount manager: %v", p, err)
-		}
-
-		submountInode := NewMockInode(ctx, NewMockMountSource(nil), StableAttr{
-			Type: Directory,
-		})
-		if err := mm.Mount(ctx, d, submountInode); err != nil {
-			t.Fatalf("could not mount at %q: %v", p, err)
-		}
-		d.DecRef()
-	}
-
-	// mm root should contain all submounts (and does not include the root mount).
-	rootMnt := mm.FindMount(rootDirent)
-	submounts := mm.AllMountsUnder(rootMnt)
-	allPaths := append(paths, "/")
-	if err := mountPathsAre(rootDirent, submounts, allPaths...); err != nil {
-		t.Error(err)
-	}
-
-	// Each mount should have a unique ID.
-	foundIDs := make(map[uint64]struct{})
-	for _, m := range submounts {
-		if _, ok := foundIDs[m.ID]; ok {
-			t.Errorf("got multiple mounts with id %d", m.ID)
-		}
-		foundIDs[m.ID] = struct{}{}
-	}
-
-	// Root mount should have no parent.
-	if p := rootMnt.ParentID; p != invalidMountID {
-		t.Errorf("root.Parent got %v wanted nil", p)
-	}
-
-	// Check that "foo" mount has 3 children.
-	maxTraversals = 0
-	d, err := mm.FindLink(ctx, rootDirent, nil, "/foo", &maxTraversals)
-	if err != nil {
-		t.Fatalf("could not find path %q in mount manager: %v", "/foo", err)
-	}
-	defer d.DecRef()
-	submounts = mm.AllMountsUnder(mm.FindMount(d))
-	if err := mountPathsAre(rootDirent, submounts, "/foo", "/foo/bar", "/foo/qux", "/foo/bar/baz"); err != nil {
-		t.Error(err)
-	}
-
-	// "waldo" mount should have no children.
-	maxTraversals = 0
-	waldo, err := mm.FindLink(ctx, rootDirent, nil, "/waldo", &maxTraversals)
-	if err != nil {
-		t.Fatalf("could not find path %q in mount manager: %v", "/waldo", err)
-	}
-	defer waldo.DecRef()
-	submounts = mm.AllMountsUnder(mm.FindMount(waldo))
-	if err := mountPathsAre(rootDirent, submounts, "/waldo"); err != nil {
-		t.Error(err)
-	}
-}
-
-func TestUnmount(t *testing.T) {
-	ctx := contexttest.Context(t)
-
-	rootCache := NewDirentCache(100)
-	rootInode := NewMockInode(ctx, NewMockMountSource(rootCache), StableAttr{
-		Type: Directory,
-	})
-	mm, err := NewMountNamespace(ctx, rootInode)
-	if err != nil {
-		t.Fatalf("NewMountNamespace failed: %v", err)
-	}
-	rootDirent := mm.Root()
-	defer rootDirent.DecRef()
-
-	// Add mounts at the following paths:
-	paths := []string{
-		"/foo",
-		"/foo/bar",
-		"/foo/bar/goo",
-		"/foo/bar/goo/abc",
-		"/foo/abc",
-		"/foo/def",
-		"/waldo",
-		"/wally",
-	}
-
-	var maxTraversals uint
-	for _, p := range paths {
-		maxTraversals = 0
-		d, err := mm.FindLink(ctx, rootDirent, nil, p, &maxTraversals)
-		if err != nil {
-			t.Fatalf("could not find path %q in mount manager: %v", p, err)
-		}
-
-		submountInode := NewMockInode(ctx, NewMockMountSource(nil), StableAttr{
-			Type: Directory,
-		})
-		if err := mm.Mount(ctx, d, submountInode); err != nil {
-			t.Fatalf("could not mount at %q: %v", p, err)
-		}
-		d.DecRef()
-	}
-
-	allPaths := make([]string, len(paths)+1)
-	allPaths[0] = "/"
-	copy(allPaths[1:], paths)
-
-	rootMnt := mm.FindMount(rootDirent)
-	for i := len(paths) - 1; i >= 0; i-- {
-		maxTraversals = 0
-		p := paths[i]
-		d, err := mm.FindLink(ctx, rootDirent, nil, p, &maxTraversals)
-		if err != nil {
-			t.Fatalf("could not find path %q in mount manager: %v", p, err)
-		}
-
-		if err := mm.Unmount(ctx, d, false); err != nil {
-			t.Fatalf("could not unmount at %q: %v", p, err)
-		}
-		d.DecRef()
-
-		// Remove the path that has been unmounted and the check that the remaining
-		// mounts are still there.
-		allPaths = allPaths[:len(allPaths)-1]
-		submounts := mm.AllMountsUnder(rootMnt)
-		if err := mountPathsAre(rootDirent, submounts, allPaths...); err != nil {
-			t.Error(err)
-		}
-	}
-}