1 files changed, 0 insertions, 133 deletions
diff --git a/pkg/sentry/fsimpl/host/mmap.go b/pkg/sentry/fsimpl/host/mmap.go
deleted file mode 100644
index 3d7eb2f96..000000000
--- a/pkg/sentry/fsimpl/host/mmap.go
+++ /dev/null
@@ -1,133 +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 host
-
-import (
-	"gvisor.dev/gvisor/pkg/context"
-	"gvisor.dev/gvisor/pkg/safemem"
-	"gvisor.dev/gvisor/pkg/sentry/fs/fsutil"
-	"gvisor.dev/gvisor/pkg/sentry/memmap"
-	"gvisor.dev/gvisor/pkg/sync"
-	"gvisor.dev/gvisor/pkg/usermem"
-)
-
-// inodePlatformFile implements memmap.File. It exists solely because inode
-// cannot implement both kernfs.Inode.IncRef and memmap.File.IncRef.
-//
-// inodePlatformFile should only be used if inode.canMap is true.
-//
-// +stateify savable
-type inodePlatformFile struct {
-	*inode
-
-	// fdRefsMu protects fdRefs.
-	fdRefsMu sync.Mutex `state:"nosave"`
-
-	// fdRefs counts references on memmap.File offsets. It is used solely for
-	// memory accounting.
-	fdRefs fsutil.FrameRefSet
-
-	// fileMapper caches mappings of the host file represented by this inode.
-	fileMapper fsutil.HostFileMapper
-
-	// fileMapperInitOnce is used to lazily initialize fileMapper.
-	fileMapperInitOnce sync.Once `state:"nosave"`
-}
-
-// IncRef implements memmap.File.IncRef.
-//
-// Precondition: i.inode.canMap must be true.
-func (i *inodePlatformFile) IncRef(fr memmap.FileRange) {
-	i.fdRefsMu.Lock()
-	i.fdRefs.IncRefAndAccount(fr)
-	i.fdRefsMu.Unlock()
-}
-
-// DecRef implements memmap.File.DecRef.
-//
-// Precondition: i.inode.canMap must be true.
-func (i *inodePlatformFile) DecRef(fr memmap.FileRange) {
-	i.fdRefsMu.Lock()
-	i.fdRefs.DecRefAndAccount(fr)
-	i.fdRefsMu.Unlock()
-}
-
-// MapInternal implements memmap.File.MapInternal.
-//
-// Precondition: i.inode.canMap must be true.
-func (i *inodePlatformFile) MapInternal(fr memmap.FileRange, at usermem.AccessType) (safemem.BlockSeq, error) {
-	return i.fileMapper.MapInternal(fr, i.hostFD, at.Write)
-}
-
-// FD implements memmap.File.FD.
-func (i *inodePlatformFile) FD() int {
-	return i.hostFD
-}
-
-// AddMapping implements memmap.Mappable.AddMapping.
-//
-// Precondition: i.inode.canMap must be true.
-func (i *inode) AddMapping(ctx context.Context, ms memmap.MappingSpace, ar usermem.AddrRange, offset uint64, writable bool) error {
-	i.mapsMu.Lock()
-	mapped := i.mappings.AddMapping(ms, ar, offset, writable)
-	for _, r := range mapped {
-		i.pf.fileMapper.IncRefOn(r)
-	}
-	i.mapsMu.Unlock()
-	return nil
-}
-
-// RemoveMapping implements memmap.Mappable.RemoveMapping.
-//
-// Precondition: i.inode.canMap must be true.
-func (i *inode) RemoveMapping(ctx context.Context, ms memmap.MappingSpace, ar usermem.AddrRange, offset uint64, writable bool) {
-	i.mapsMu.Lock()
-	unmapped := i.mappings.RemoveMapping(ms, ar, offset, writable)
-	for _, r := range unmapped {
-		i.pf.fileMapper.DecRefOn(r)
-	}
-	i.mapsMu.Unlock()
-}
-
-// CopyMapping implements memmap.Mappable.CopyMapping.
-//
-// Precondition: i.inode.canMap must be true.
-func (i *inode) CopyMapping(ctx context.Context, ms memmap.MappingSpace, srcAR, dstAR usermem.AddrRange, offset uint64, writable bool) error {
-	return i.AddMapping(ctx, ms, dstAR, offset, writable)
-}
-
-// Translate implements memmap.Mappable.Translate.
-//
-// Precondition: i.inode.canMap must be true.
-func (i *inode) Translate(ctx context.Context, required, optional memmap.MappableRange, at usermem.AccessType) ([]memmap.Translation, error) {
-	mr := optional
-	return []memmap.Translation{
-		{
-			Source: mr,
-			File:   &i.pf,
-			Offset: mr.Start,
-			Perms:  usermem.AnyAccess,
-		},
-	}, nil
-}
-
-// InvalidateUnsavable implements memmap.Mappable.InvalidateUnsavable.
-//
-// Precondition: i.inode.canMap must be true.
-func (i *inode) InvalidateUnsavable(ctx context.Context) error {
-	// We expect the same host fd across save/restore, so all translations
-	// should be valid.
-	return nil
-}