1 files changed, 0 insertions, 88 deletions
diff --git a/pkg/sentry/devices/memdev/zero.go b/pkg/sentry/devices/memdev/zero.go
deleted file mode 100644
index 3b1372b9e..000000000
--- a/pkg/sentry/devices/memdev/zero.go
+++ /dev/null
@@ -1,88 +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 memdev
-
-import (
-	"gvisor.dev/gvisor/pkg/context"
-	"gvisor.dev/gvisor/pkg/sentry/memmap"
-	"gvisor.dev/gvisor/pkg/sentry/mm"
-	"gvisor.dev/gvisor/pkg/sentry/pgalloc"
-	"gvisor.dev/gvisor/pkg/sentry/vfs"
-	"gvisor.dev/gvisor/pkg/usermem"
-)
-
-const zeroDevMinor = 5
-
-// zeroDevice implements vfs.Device for /dev/zero.
-type zeroDevice struct{}
-
-// Open implements vfs.Device.Open.
-func (zeroDevice) Open(ctx context.Context, mnt *vfs.Mount, vfsd *vfs.Dentry, opts vfs.OpenOptions) (*vfs.FileDescription, error) {
-	fd := &zeroFD{}
-	if err := fd.vfsfd.Init(fd, opts.Flags, mnt, vfsd, &vfs.FileDescriptionOptions{
-		UseDentryMetadata: true,
-	}); err != nil {
-		return nil, err
-	}
-	return &fd.vfsfd, nil
-}
-
-// zeroFD implements vfs.FileDescriptionImpl for /dev/zero.
-type zeroFD struct {
-	vfsfd vfs.FileDescription
-	vfs.FileDescriptionDefaultImpl
-	vfs.DentryMetadataFileDescriptionImpl
-}
-
-// Release implements vfs.FileDescriptionImpl.Release.
-func (fd *zeroFD) Release() {
-	// noop
-}
-
-// PRead implements vfs.FileDescriptionImpl.PRead.
-func (fd *zeroFD) PRead(ctx context.Context, dst usermem.IOSequence, offset int64, opts vfs.ReadOptions) (int64, error) {
-	return dst.ZeroOut(ctx, dst.NumBytes())
-}
-
-// Read implements vfs.FileDescriptionImpl.Read.
-func (fd *zeroFD) Read(ctx context.Context, dst usermem.IOSequence, opts vfs.ReadOptions) (int64, error) {
-	return dst.ZeroOut(ctx, dst.NumBytes())
-}
-
-// PWrite implements vfs.FileDescriptionImpl.PWrite.
-func (fd *zeroFD) PWrite(ctx context.Context, src usermem.IOSequence, offset int64, opts vfs.WriteOptions) (int64, error) {
-	return src.NumBytes(), nil
-}
-
-// Write implements vfs.FileDescriptionImpl.Write.
-func (fd *zeroFD) Write(ctx context.Context, src usermem.IOSequence, opts vfs.WriteOptions) (int64, error) {
-	return src.NumBytes(), nil
-}
-
-// Seek implements vfs.FileDescriptionImpl.Seek.
-func (fd *zeroFD) Seek(ctx context.Context, offset int64, whence int32) (int64, error) {
-	return 0, nil
-}
-
-// ConfigureMMap implements vfs.FileDescriptionImpl.ConfigureMMap.
-func (fd *zeroFD) ConfigureMMap(ctx context.Context, opts *memmap.MMapOpts) error {
-	m, err := mm.NewSharedAnonMappable(opts.Length, pgalloc.MemoryFileProviderFromContext(ctx))
-	if err != nil {
-		return err
-	}
-	opts.MappingIdentity = m
-	opts.Mappable = m
-	return nil
-}