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// 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 filetest provides a test implementation of an fs.File.
package filetest
import (
"fmt"
"testing"
"gvisor.dev/gvisor/pkg/sentry/context"
"gvisor.dev/gvisor/pkg/sentry/context/contexttest"
"gvisor.dev/gvisor/pkg/sentry/fs"
"gvisor.dev/gvisor/pkg/sentry/fs/anon"
"gvisor.dev/gvisor/pkg/sentry/fs/fsutil"
"gvisor.dev/gvisor/pkg/sentry/usermem"
"gvisor.dev/gvisor/pkg/waiter"
)
// TestFileOperations is an implementation of the File interface. It provides all
// required methods.
type TestFileOperations struct {
fsutil.FileNoopRelease `state:"nosave"`
fsutil.FilePipeSeek `state:"nosave"`
fsutil.FileNotDirReaddir `state:"nosave"`
fsutil.FileNoFsync `state:"nosave"`
fsutil.FileNoopFlush `state:"nosave"`
fsutil.FileNoMMap `state:"nosave"`
fsutil.FileNoIoctl `state:"nosave"`
fsutil.FileNoSplice `state:"nosave"`
fsutil.FileUseInodeUnstableAttr `state:"nosave"`
waiter.AlwaysReady `state:"nosave"`
}
// NewTestFile creates and initializes a new test file.
func NewTestFile(tb testing.TB) *fs.File {
ctx := contexttest.Context(tb)
dirent := fs.NewDirent(ctx, anon.NewInode(ctx), "test")
return fs.NewFile(ctx, dirent, fs.FileFlags{}, &TestFileOperations{})
}
// Read just fails the request.
func (*TestFileOperations) Read(context.Context, *fs.File, usermem.IOSequence, int64) (int64, error) {
return 0, fmt.Errorf("Readv not implemented")
}
// Write just fails the request.
func (*TestFileOperations) Write(context.Context, *fs.File, usermem.IOSequence, int64) (int64, error) {
return 0, fmt.Errorf("Writev not implemented")
}
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