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Diffstat (limited to 'pkg/sentry/fsimpl/fuse/file.go')
-rw-r--r--pkg/sentry/fsimpl/fuse/file.go133
1 files changed, 0 insertions, 133 deletions
diff --git a/pkg/sentry/fsimpl/fuse/file.go b/pkg/sentry/fsimpl/fuse/file.go
deleted file mode 100644
index 991efcda4..000000000
--- a/pkg/sentry/fsimpl/fuse/file.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 fuse
-
-import (
- "gvisor.dev/gvisor/pkg/abi/linux"
- "gvisor.dev/gvisor/pkg/context"
- "gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs"
- "gvisor.dev/gvisor/pkg/sentry/kernel"
- "gvisor.dev/gvisor/pkg/sentry/kernel/auth"
- "gvisor.dev/gvisor/pkg/sentry/vfs"
- "gvisor.dev/gvisor/pkg/usermem"
-)
-
-// fileDescription implements vfs.FileDescriptionImpl for fuse.
-type fileDescription struct {
- vfsfd vfs.FileDescription
- vfs.FileDescriptionDefaultImpl
- vfs.DentryMetadataFileDescriptionImpl
- vfs.NoLockFD
-
- // the file handle used in userspace.
- Fh uint64
-
- // Nonseekable is indicate cannot perform seek on a file.
- Nonseekable bool
-
- // DirectIO suggest fuse to use direct io operation.
- DirectIO bool
-
- // OpenFlag is the flag returned by open.
- OpenFlag uint32
-
- // off is the file offset.
- off int64
-}
-
-func (fd *fileDescription) dentry() *kernfs.Dentry {
- return fd.vfsfd.Dentry().Impl().(*kernfs.Dentry)
-}
-
-func (fd *fileDescription) inode() *inode {
- return fd.dentry().Inode().(*inode)
-}
-
-func (fd *fileDescription) filesystem() *vfs.Filesystem {
- return fd.vfsfd.VirtualDentry().Mount().Filesystem()
-}
-
-func (fd *fileDescription) statusFlags() uint32 {
- return fd.vfsfd.StatusFlags()
-}
-
-// Release implements vfs.FileDescriptionImpl.Release.
-func (fd *fileDescription) Release(ctx context.Context) {
- // no need to release if FUSE server doesn't implement Open.
- conn := fd.inode().fs.conn
- if conn.noOpen {
- return
- }
-
- in := linux.FUSEReleaseIn{
- Fh: fd.Fh,
- Flags: fd.statusFlags(),
- }
- // TODO(gvisor.dev/issue/3245): add logic when we support file lock owner.
- var opcode linux.FUSEOpcode
- if fd.inode().Mode().IsDir() {
- opcode = linux.FUSE_RELEASEDIR
- } else {
- opcode = linux.FUSE_RELEASE
- }
- kernelTask := kernel.TaskFromContext(ctx)
- // ignoring errors and FUSE server reply is analogous to Linux's behavior.
- req, err := conn.NewRequest(auth.CredentialsFromContext(ctx), uint32(kernelTask.ThreadID()), fd.inode().nodeID, opcode, &in)
- if err != nil {
- // No way to invoke Call() with an errored request.
- return
- }
- req.noReply = true
- conn.CallAsync(kernelTask, req)
-}
-
-// PRead implements vfs.FileDescriptionImpl.PRead.
-func (fd *fileDescription) PRead(ctx context.Context, dst usermem.IOSequence, offset int64, opts vfs.ReadOptions) (int64, error) {
- return 0, nil
-}
-
-// Read implements vfs.FileDescriptionImpl.Read.
-func (fd *fileDescription) Read(ctx context.Context, dst usermem.IOSequence, opts vfs.ReadOptions) (int64, error) {
- return 0, nil
-}
-
-// PWrite implements vfs.FileDescriptionImpl.PWrite.
-func (fd *fileDescription) PWrite(ctx context.Context, src usermem.IOSequence, offset int64, opts vfs.WriteOptions) (int64, error) {
- return 0, nil
-}
-
-// Write implements vfs.FileDescriptionImpl.Write.
-func (fd *fileDescription) Write(ctx context.Context, src usermem.IOSequence, opts vfs.WriteOptions) (int64, error) {
- return 0, nil
-}
-
-// Seek implements vfs.FileDescriptionImpl.Seek.
-func (fd *fileDescription) Seek(ctx context.Context, offset int64, whence int32) (int64, error) {
- return 0, nil
-}
-
-// Stat implements vfs.FileDescriptionImpl.Stat.
-func (fd *fileDescription) Stat(ctx context.Context, opts vfs.StatOptions) (linux.Statx, error) {
- fs := fd.filesystem()
- inode := fd.inode()
- return inode.Stat(ctx, fs, opts)
-}
-
-// SetStat implements vfs.FileDescriptionImpl.SetStat.
-func (fd *fileDescription) SetStat(ctx context.Context, opts vfs.SetStatOptions) error {
- fs := fd.filesystem()
- creds := auth.CredentialsFromContext(ctx)
- return fd.inode().setAttr(ctx, fs, creds, opts, true, fd.Fh)
-}