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-rw-r--r--pkg/sentry/control/proc.go2
-rw-r--r--pkg/sentry/fsimpl/devtmpfs/devtmpfs_test.go5
-rw-r--r--pkg/sentry/fsimpl/ext/benchmark/benchmark_test.go5
-rw-r--r--pkg/sentry/fsimpl/ext/ext_test.go5
-rw-r--r--pkg/sentry/fsimpl/kernfs/kernfs_test.go5
-rw-r--r--pkg/sentry/fsimpl/proc/tasks_test.go6
-rw-r--r--pkg/sentry/fsimpl/sys/sys_test.go6
-rw-r--r--pkg/sentry/fsimpl/testutil/kernel.go7
-rw-r--r--pkg/sentry/fsimpl/tmpfs/benchmark_test.go10
-rw-r--r--pkg/sentry/fsimpl/tmpfs/pipe_test.go5
-rw-r--r--pkg/sentry/fsimpl/tmpfs/regular_file_test.go6
-rw-r--r--pkg/sentry/kernel/kernel.go9
-rw-r--r--pkg/sentry/vfs/dentry.go4
-rw-r--r--pkg/sentry/vfs/device.go3
-rw-r--r--pkg/sentry/vfs/file_description_impl_util_test.go10
-rw-r--r--pkg/sentry/vfs/filesystem.go2
-rw-r--r--pkg/sentry/vfs/filesystem_type.go1
-rw-r--r--pkg/sentry/vfs/mount.go4
-rw-r--r--pkg/sentry/vfs/mount_unsafe.go8
-rw-r--r--pkg/sentry/vfs/vfs.go35
20 files changed, 94 insertions, 44 deletions
diff --git a/pkg/sentry/control/proc.go b/pkg/sentry/control/proc.go
index 8973754c8..5457ba5e7 100644
--- a/pkg/sentry/control/proc.go
+++ b/pkg/sentry/control/proc.go
@@ -199,7 +199,7 @@ func (proc *Proc) execAsync(args *ExecArgs) (*kernel.ThreadGroup, kernel.ThreadI
}
paths := fs.GetPath(initArgs.Envv)
- vfsObj := proc.Kernel.VFS
+ vfsObj := proc.Kernel.VFS()
file, err := ResolveExecutablePath(ctx, vfsObj, initArgs.WorkingDirectory, initArgs.Argv[0], paths)
if err != nil {
return nil, 0, nil, fmt.Errorf("error finding executable %q in PATH %v: %v", initArgs.Argv[0], paths, err)
diff --git a/pkg/sentry/fsimpl/devtmpfs/devtmpfs_test.go b/pkg/sentry/fsimpl/devtmpfs/devtmpfs_test.go
index 73308a2b5..b6d52c015 100644
--- a/pkg/sentry/fsimpl/devtmpfs/devtmpfs_test.go
+++ b/pkg/sentry/fsimpl/devtmpfs/devtmpfs_test.go
@@ -29,7 +29,10 @@ func TestDevtmpfs(t *testing.T) {
ctx := contexttest.Context(t)
creds := auth.CredentialsFromContext(ctx)
- vfsObj := vfs.New()
+ 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{
diff --git a/pkg/sentry/fsimpl/ext/benchmark/benchmark_test.go b/pkg/sentry/fsimpl/ext/benchmark/benchmark_test.go
index 2015a8871..89caee3df 100644
--- a/pkg/sentry/fsimpl/ext/benchmark/benchmark_test.go
+++ b/pkg/sentry/fsimpl/ext/benchmark/benchmark_test.go
@@ -52,7 +52,10 @@ func setUp(b *testing.B, imagePath string) (context.Context, *vfs.VirtualFilesys
creds := auth.CredentialsFromContext(ctx)
// Create VFS.
- vfsObj := vfs.New()
+ vfsObj := &vfs.VirtualFilesystem{}
+ if err := vfsObj.Init(); err != nil {
+ return nil, nil, nil, nil, err
+ }
vfsObj.MustRegisterFilesystemType("extfs", ext.FilesystemType{}, &vfs.RegisterFilesystemTypeOptions{
AllowUserMount: true,
})
diff --git a/pkg/sentry/fsimpl/ext/ext_test.go b/pkg/sentry/fsimpl/ext/ext_test.go
index 05f992826..ef6127f3c 100644
--- a/pkg/sentry/fsimpl/ext/ext_test.go
+++ b/pkg/sentry/fsimpl/ext/ext_test.go
@@ -65,7 +65,10 @@ func setUp(t *testing.T, imagePath string) (context.Context, *vfs.VirtualFilesys
creds := auth.CredentialsFromContext(ctx)
// Create VFS.
- vfsObj := vfs.New()
+ vfsObj := &vfs.VirtualFilesystem{}
+ if err := vfsObj.Init(); err != nil {
+ t.Fatalf("VFS init: %v", err)
+ }
vfsObj.MustRegisterFilesystemType("extfs", FilesystemType{}, &vfs.RegisterFilesystemTypeOptions{
AllowUserMount: true,
})
diff --git a/pkg/sentry/fsimpl/kernfs/kernfs_test.go b/pkg/sentry/fsimpl/kernfs/kernfs_test.go
index 96a16e654..0459fb305 100644
--- a/pkg/sentry/fsimpl/kernfs/kernfs_test.go
+++ b/pkg/sentry/fsimpl/kernfs/kernfs_test.go
@@ -45,7 +45,10 @@ type RootDentryFn func(*auth.Credentials, *filesystem) *kernfs.Dentry
func newTestSystem(t *testing.T, rootFn RootDentryFn) *testutil.System {
ctx := contexttest.Context(t)
creds := auth.CredentialsFromContext(ctx)
- v := vfs.New()
+ v := &vfs.VirtualFilesystem{}
+ if err := v.Init(); err != nil {
+ t.Fatalf("VFS init: %v", err)
+ }
v.MustRegisterFilesystemType("testfs", &fsType{rootFn: rootFn}, &vfs.RegisterFilesystemTypeOptions{
AllowUserMount: true,
})
diff --git a/pkg/sentry/fsimpl/proc/tasks_test.go b/pkg/sentry/fsimpl/proc/tasks_test.go
index 96c72cbc9..c5d531fe0 100644
--- a/pkg/sentry/fsimpl/proc/tasks_test.go
+++ b/pkg/sentry/fsimpl/proc/tasks_test.go
@@ -90,7 +90,7 @@ func setup(t *testing.T) *testutil.System {
ctx := k.SupervisorContext()
creds := auth.CredentialsFromContext(ctx)
- k.VFS.MustRegisterFilesystemType(Name, &FilesystemType{}, &vfs.RegisterFilesystemTypeOptions{
+ k.VFS().MustRegisterFilesystemType(Name, &FilesystemType{}, &vfs.RegisterFilesystemTypeOptions{
AllowUserMount: true,
})
fsOpts := vfs.GetFilesystemOptions{
@@ -101,11 +101,11 @@ func setup(t *testing.T) *testutil.System {
},
},
}
- mntns, err := k.VFS.NewMountNamespace(ctx, creds, "", Name, &fsOpts)
+ mntns, err := k.VFS().NewMountNamespace(ctx, creds, "", Name, &fsOpts)
if err != nil {
t.Fatalf("NewMountNamespace(): %v", err)
}
- return testutil.NewSystem(ctx, t, k.VFS, mntns)
+ return testutil.NewSystem(ctx, t, k.VFS(), mntns)
}
func TestTasksEmpty(t *testing.T) {
diff --git a/pkg/sentry/fsimpl/sys/sys_test.go b/pkg/sentry/fsimpl/sys/sys_test.go
index 5d1ba5867..4b3602d47 100644
--- a/pkg/sentry/fsimpl/sys/sys_test.go
+++ b/pkg/sentry/fsimpl/sys/sys_test.go
@@ -34,15 +34,15 @@ func newTestSystem(t *testing.T) *testutil.System {
}
ctx := k.SupervisorContext()
creds := auth.CredentialsFromContext(ctx)
- k.VFS.MustRegisterFilesystemType(sys.Name, sys.FilesystemType{}, &vfs.RegisterFilesystemTypeOptions{
+ k.VFS().MustRegisterFilesystemType(sys.Name, sys.FilesystemType{}, &vfs.RegisterFilesystemTypeOptions{
AllowUserMount: true,
})
- mns, err := k.VFS.NewMountNamespace(ctx, creds, "", sys.Name, &vfs.GetFilesystemOptions{})
+ mns, err := k.VFS().NewMountNamespace(ctx, creds, "", sys.Name, &vfs.GetFilesystemOptions{})
if err != nil {
t.Fatalf("Failed to create new mount namespace: %v", err)
}
- return testutil.NewSystem(ctx, t, k.VFS, mns)
+ return testutil.NewSystem(ctx, t, k.VFS(), mns)
}
func TestReadCPUFile(t *testing.T) {
diff --git a/pkg/sentry/fsimpl/testutil/kernel.go b/pkg/sentry/fsimpl/testutil/kernel.go
index a91b3ec4d..d0be32e72 100644
--- a/pkg/sentry/fsimpl/testutil/kernel.go
+++ b/pkg/sentry/fsimpl/testutil/kernel.go
@@ -102,12 +102,13 @@ func Boot() (*kernel.Kernel, error) {
kernel.VFS2Enabled = true
- vfsObj := vfs.New()
- vfsObj.MustRegisterFilesystemType(tmpfs.Name, &tmpfs.FilesystemType{}, &vfs.RegisterFilesystemTypeOptions{
+ if err := k.VFS().Init(); err != nil {
+ return nil, fmt.Errorf("VFS init: %v", err)
+ }
+ k.VFS().MustRegisterFilesystemType(tmpfs.Name, &tmpfs.FilesystemType{}, &vfs.RegisterFilesystemTypeOptions{
AllowUserMount: true,
AllowUserList: true,
})
- k.VFS = vfsObj
ls, err := limits.NewLinuxLimitSet()
if err != nil {
diff --git a/pkg/sentry/fsimpl/tmpfs/benchmark_test.go b/pkg/sentry/fsimpl/tmpfs/benchmark_test.go
index 9fce5e4b4..383133e44 100644
--- a/pkg/sentry/fsimpl/tmpfs/benchmark_test.go
+++ b/pkg/sentry/fsimpl/tmpfs/benchmark_test.go
@@ -175,7 +175,10 @@ func BenchmarkVFS2MemfsStat(b *testing.B) {
creds := auth.CredentialsFromContext(ctx)
// Create VFS.
- vfsObj := vfs.New()
+ vfsObj := vfs.VirtualFilesystem{}
+ if err := vfsObj.Init(); err != nil {
+ b.Fatalf("VFS init: %v", err)
+ }
vfsObj.MustRegisterFilesystemType("tmpfs", tmpfs.FilesystemType{}, &vfs.RegisterFilesystemTypeOptions{
AllowUserMount: true,
})
@@ -366,7 +369,10 @@ func BenchmarkVFS2MemfsMountStat(b *testing.B) {
creds := auth.CredentialsFromContext(ctx)
// Create VFS.
- vfsObj := vfs.New()
+ vfsObj := vfs.VirtualFilesystem{}
+ if err := vfsObj.Init(); err != nil {
+ b.Fatalf("VFS init: %v", err)
+ }
vfsObj.MustRegisterFilesystemType("tmpfs", tmpfs.FilesystemType{}, &vfs.RegisterFilesystemTypeOptions{
AllowUserMount: true,
})
diff --git a/pkg/sentry/fsimpl/tmpfs/pipe_test.go b/pkg/sentry/fsimpl/tmpfs/pipe_test.go
index 5ee7f2a72..1614f2c39 100644
--- a/pkg/sentry/fsimpl/tmpfs/pipe_test.go
+++ b/pkg/sentry/fsimpl/tmpfs/pipe_test.go
@@ -151,7 +151,10 @@ func setup(t *testing.T) (context.Context, *auth.Credentials, *vfs.VirtualFilesy
creds := auth.CredentialsFromContext(ctx)
// Create VFS.
- vfsObj := vfs.New()
+ vfsObj := &vfs.VirtualFilesystem{}
+ if err := vfsObj.Init(); err != nil {
+ t.Fatalf("VFS init: %v", err)
+ }
vfsObj.MustRegisterFilesystemType("tmpfs", FilesystemType{}, &vfs.RegisterFilesystemTypeOptions{
AllowUserMount: true,
})
diff --git a/pkg/sentry/fsimpl/tmpfs/regular_file_test.go b/pkg/sentry/fsimpl/tmpfs/regular_file_test.go
index e9f71e334..0399725cf 100644
--- a/pkg/sentry/fsimpl/tmpfs/regular_file_test.go
+++ b/pkg/sentry/fsimpl/tmpfs/regular_file_test.go
@@ -40,7 +40,11 @@ var nextFileID int64
func newTmpfsRoot(ctx context.Context) (*vfs.VirtualFilesystem, vfs.VirtualDentry, func(), error) {
creds := auth.CredentialsFromContext(ctx)
- vfsObj := vfs.New()
+ vfsObj := &vfs.VirtualFilesystem{}
+ if err := vfsObj.Init(); err != nil {
+ return nil, vfs.VirtualDentry{}, nil, fmt.Errorf("VFS init: %v", err)
+ }
+
vfsObj.MustRegisterFilesystemType("tmpfs", FilesystemType{}, &vfs.RegisterFilesystemTypeOptions{
AllowUserMount: true,
})
diff --git a/pkg/sentry/kernel/kernel.go b/pkg/sentry/kernel/kernel.go
index 2665f057c..ea21af33f 100644
--- a/pkg/sentry/kernel/kernel.go
+++ b/pkg/sentry/kernel/kernel.go
@@ -246,7 +246,7 @@ type Kernel struct {
SpecialOpts
// VFS keeps the filesystem state used across the kernel.
- VFS *vfs.VirtualFilesystem
+ vfs vfs.VirtualFilesystem
}
// InitKernelArgs holds arguments to Init.
@@ -815,7 +815,7 @@ func (k *Kernel) CreateProcess(args CreateProcessArgs) (*ThreadGroup, ThreadID,
FollowFinalSymlink: true,
}
var err error
- wd, err = k.VFS.GetDentryAt(ctx, args.Credentials, &pop, &vfs.GetDentryOptions{
+ wd, err = k.VFS().GetDentryAt(ctx, args.Credentials, &pop, &vfs.GetDentryOptions{
CheckSearchable: true,
})
if err != nil {
@@ -1506,3 +1506,8 @@ func (k *Kernel) EmitUnimplementedEvent(ctx context.Context) {
Registers: t.Arch().StateData().Proto(),
})
}
+
+// VFS returns the virtual filesystem for the kernel.
+func (k *Kernel) VFS() *vfs.VirtualFilesystem {
+ return &k.vfs
+}
diff --git a/pkg/sentry/vfs/dentry.go b/pkg/sentry/vfs/dentry.go
index 486a76475..35b208721 100644
--- a/pkg/sentry/vfs/dentry.go
+++ b/pkg/sentry/vfs/dentry.go
@@ -71,6 +71,8 @@ import (
// lifetime. Dentry reference counts only indicate the extent to which VFS
// requires Dentries to exist; Filesystems may elect to cache or discard
// Dentries with zero references.
+//
+// +stateify savable
type Dentry struct {
// parent is this Dentry's parent in this Filesystem. If this Dentry is
// independent, parent is nil.
@@ -89,7 +91,7 @@ type Dentry struct {
children map[string]*Dentry
// mu synchronizes disowning and mounting over this Dentry.
- mu sync.Mutex
+ mu sync.Mutex `state:"nosave"`
// impl is the DentryImpl associated with this Dentry. impl is immutable.
// This should be the last field in Dentry.
diff --git a/pkg/sentry/vfs/device.go b/pkg/sentry/vfs/device.go
index 3af2aa58d..bda5576fa 100644
--- a/pkg/sentry/vfs/device.go
+++ b/pkg/sentry/vfs/device.go
@@ -56,6 +56,7 @@ type Device interface {
Open(ctx context.Context, mnt *Mount, d *Dentry, opts OpenOptions) (*FileDescription, error)
}
+// +stateify savable
type registeredDevice struct {
dev Device
opts RegisterDeviceOptions
@@ -63,6 +64,8 @@ type registeredDevice struct {
// RegisterDeviceOptions contains options to
// VirtualFilesystem.RegisterDevice().
+//
+// +stateify savable
type RegisterDeviceOptions struct {
// GroupName is the name shown for this device registration in
// /proc/devices. If GroupName is empty, this registration will not be
diff --git a/pkg/sentry/vfs/file_description_impl_util_test.go b/pkg/sentry/vfs/file_description_impl_util_test.go
index 8fa26418e..3a75d4d62 100644
--- a/pkg/sentry/vfs/file_description_impl_util_test.go
+++ b/pkg/sentry/vfs/file_description_impl_util_test.go
@@ -107,7 +107,10 @@ func (fd *testFD) SetStat(ctx context.Context, opts SetStatOptions) error {
func TestGenCountFD(t *testing.T) {
ctx := contexttest.Context(t)
- vfsObj := New() // vfs.New()
+ vfsObj := &VirtualFilesystem{}
+ if err := vfsObj.Init(); err != nil {
+ t.Fatalf("VFS init: %v", err)
+ }
fd := newTestFD(vfsObj, linux.O_RDWR, &genCount{})
defer fd.DecRef()
@@ -162,7 +165,10 @@ func TestGenCountFD(t *testing.T) {
func TestWritable(t *testing.T) {
ctx := contexttest.Context(t)
- vfsObj := New() // vfs.New()
+ vfsObj := &VirtualFilesystem{}
+ if err := vfsObj.Init(); err != nil {
+ t.Fatalf("VFS init: %v", err)
+ }
fd := newTestFD(vfsObj, linux.O_RDWR, &storeData{data: "init"})
defer fd.DecRef()
diff --git a/pkg/sentry/vfs/filesystem.go b/pkg/sentry/vfs/filesystem.go
index a06a6caf3..556976d0b 100644
--- a/pkg/sentry/vfs/filesystem.go
+++ b/pkg/sentry/vfs/filesystem.go
@@ -29,6 +29,8 @@ import (
// Filesystem methods require that a reference is held.
//
// Filesystem is analogous to Linux's struct super_block.
+//
+// +stateify savable
type Filesystem struct {
// refs is the reference count. refs is accessed using atomic memory
// operations.
diff --git a/pkg/sentry/vfs/filesystem_type.go b/pkg/sentry/vfs/filesystem_type.go
index c58b70728..bb9cada81 100644
--- a/pkg/sentry/vfs/filesystem_type.go
+++ b/pkg/sentry/vfs/filesystem_type.go
@@ -44,6 +44,7 @@ type GetFilesystemOptions struct {
InternalData interface{}
}
+// +stateify savable
type registeredFilesystemType struct {
fsType FilesystemType
opts RegisterFilesystemTypeOptions
diff --git a/pkg/sentry/vfs/mount.go b/pkg/sentry/vfs/mount.go
index ad2c9fcf4..9912df799 100644
--- a/pkg/sentry/vfs/mount.go
+++ b/pkg/sentry/vfs/mount.go
@@ -38,6 +38,8 @@ import (
//
// Mount is analogous to Linux's struct mount. (gVisor does not distinguish
// between struct mount and struct vfsmount.)
+//
+// +stateify savable
type Mount struct {
// vfs, fs, and root are immutable. References are held on fs and root.
//
@@ -85,6 +87,8 @@ type Mount struct {
// MountNamespace methods require that a reference is held.
//
// MountNamespace is analogous to Linux's struct mnt_namespace.
+//
+// +stateify savable
type MountNamespace struct {
// root is the MountNamespace's root mount. root is immutable.
root *Mount
diff --git a/pkg/sentry/vfs/mount_unsafe.go b/pkg/sentry/vfs/mount_unsafe.go
index bd90d36c4..1fe766a44 100644
--- a/pkg/sentry/vfs/mount_unsafe.go
+++ b/pkg/sentry/vfs/mount_unsafe.go
@@ -64,6 +64,8 @@ func (mnt *Mount) storeKey(vd VirtualDentry) {
// (provided mutation is sufficiently uncommon).
//
// mountTable.Init() must be called on new mountTables before use.
+//
+// +stateify savable
type mountTable struct {
// mountTable is implemented as a seqcount-protected hash table that
// resolves collisions with linear probing, featuring Robin Hood insertion
@@ -75,8 +77,8 @@ type mountTable struct {
// intrinsics and inline assembly, limiting the performance of this
// approach.)
- seq sync.SeqCount
- seed uint32 // for hashing keys
+ seq sync.SeqCount `state:"nosave"`
+ seed uint32 // for hashing keys
// size holds both length (number of elements) and capacity (number of
// slots): capacity is stored as its base-2 log (referred to as order) in
@@ -89,7 +91,7 @@ type mountTable struct {
// length and cap in separate uint32s) for ~free.
size uint64
- slots unsafe.Pointer // []mountSlot; never nil after Init
+ slots unsafe.Pointer `state:"nosave"` // []mountSlot; never nil after Init
}
type mountSlot struct {
diff --git a/pkg/sentry/vfs/vfs.go b/pkg/sentry/vfs/vfs.go
index 51deae313..8f29031b2 100644
--- a/pkg/sentry/vfs/vfs.go
+++ b/pkg/sentry/vfs/vfs.go
@@ -46,11 +46,13 @@ import (
//
// There is no analogue to the VirtualFilesystem type in Linux, as the
// equivalent state in Linux is global.
+//
+// +stateify savable
type VirtualFilesystem struct {
// mountMu serializes mount mutations.
//
// mountMu is analogous to Linux's namespace_sem.
- mountMu sync.Mutex
+ mountMu sync.Mutex `state:"nosave"`
// mounts maps (mount parent, mount point) pairs to mounts. (Since mounts
// are uniquely namespaced, including mount parent in the key correctly
@@ -89,44 +91,42 @@ type VirtualFilesystem struct {
// devices contains all registered Devices. devices is protected by
// devicesMu.
- devicesMu sync.RWMutex
+ devicesMu sync.RWMutex `state:"nosave"`
devices map[devTuple]*registeredDevice
// anonBlockDevMinor contains all allocated anonymous block device minor
// numbers. anonBlockDevMinorNext is a lower bound for the smallest
// unallocated anonymous block device number. anonBlockDevMinorNext and
// anonBlockDevMinor are protected by anonBlockDevMinorMu.
- anonBlockDevMinorMu sync.Mutex
+ anonBlockDevMinorMu sync.Mutex `state:"nosave"`
anonBlockDevMinorNext uint32
anonBlockDevMinor map[uint32]struct{}
// fsTypes contains all registered FilesystemTypes. fsTypes is protected by
// fsTypesMu.
- fsTypesMu sync.RWMutex
+ fsTypesMu sync.RWMutex `state:"nosave"`
fsTypes map[string]*registeredFilesystemType
// filesystems contains all Filesystems. filesystems is protected by
// filesystemsMu.
- filesystemsMu sync.Mutex
+ filesystemsMu sync.Mutex `state:"nosave"`
filesystems map[*Filesystem]struct{}
}
-// New returns a new VirtualFilesystem with no mounts or FilesystemTypes.
-func New() *VirtualFilesystem {
- vfs := &VirtualFilesystem{
- mountpoints: make(map[*Dentry]map[*Mount]struct{}),
- devices: make(map[devTuple]*registeredDevice),
- anonBlockDevMinorNext: 1,
- anonBlockDevMinor: make(map[uint32]struct{}),
- fsTypes: make(map[string]*registeredFilesystemType),
- filesystems: make(map[*Filesystem]struct{}),
- }
+// Init initializes a new VirtualFilesystem with no mounts or FilesystemTypes.
+func (vfs *VirtualFilesystem) Init() error {
+ vfs.mountpoints = make(map[*Dentry]map[*Mount]struct{})
+ vfs.devices = make(map[devTuple]*registeredDevice)
+ vfs.anonBlockDevMinorNext = 1
+ vfs.anonBlockDevMinor = make(map[uint32]struct{})
+ vfs.fsTypes = make(map[string]*registeredFilesystemType)
+ vfs.filesystems = make(map[*Filesystem]struct{})
vfs.mounts.Init()
// Construct vfs.anonMount.
anonfsDevMinor, err := vfs.GetAnonBlockDevMinor()
if err != nil {
- panic(fmt.Sprintf("VirtualFilesystem.GetAnonBlockDevMinor() failed during VirtualFilesystem construction: %v", err))
+ return err
}
anonfs := anonFilesystem{
devMinor: anonfsDevMinor,
@@ -137,8 +137,7 @@ func New() *VirtualFilesystem {
fs: &anonfs.vfsfs,
refs: 1,
}
-
- return vfs
+ return nil
}
// PathOperation specifies the path operated on by a VFS method.