mirror of
https://github.com/netbirdio/gvisor.git
synced 2026-05-22 17:12:49 -07:00
Adin Scannell
0e2f1b7abd
Because the abi will depend on the core types for marshalling (usermem, context, safemem, safecopy), these need to be flattened from the sentry directory. These packages contain no sentry-specific details. PiperOrigin-RevId: 291811289
68 lines
2.4 KiB
Go
68 lines
2.4 KiB
Go
// Copyright 2018 The gVisor Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package pipe
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import (
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"io"
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"gvisor.dev/gvisor/pkg/context"
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"gvisor.dev/gvisor/pkg/sentry/arch"
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"gvisor.dev/gvisor/pkg/sentry/fs"
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"gvisor.dev/gvisor/pkg/sentry/fs/fsutil"
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"gvisor.dev/gvisor/pkg/usermem"
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)
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// ReaderWriter satisfies the FileOperations interface and services both
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// read and write requests. This should only be used directly for named pipes.
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// pipe(2) and pipe2(2) only support unidirectional pipes and should use
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// either pipe.Reader or pipe.Writer.
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//
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// +stateify savable
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type ReaderWriter struct {
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fsutil.FilePipeSeek `state:"nosave"`
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fsutil.FileNotDirReaddir `state:"nosave"`
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fsutil.FileNoFsync `state:"nosave"`
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fsutil.FileNoMMap `state:"nosave"`
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fsutil.FileNoSplice `state:"nosave"`
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fsutil.FileNoopFlush `state:"nosave"`
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fsutil.FileUseInodeUnstableAttr `state:"nosave"`
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*Pipe
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}
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// Read implements fs.FileOperations.Read.
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func (rw *ReaderWriter) Read(ctx context.Context, _ *fs.File, dst usermem.IOSequence, _ int64) (int64, error) {
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return rw.Pipe.Read(ctx, dst)
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}
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// WriteTo implements fs.FileOperations.WriteTo.
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func (rw *ReaderWriter) WriteTo(ctx context.Context, _ *fs.File, w io.Writer, count int64, dup bool) (int64, error) {
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return rw.Pipe.WriteTo(ctx, w, count, dup)
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}
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// Write implements fs.FileOperations.Write.
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func (rw *ReaderWriter) Write(ctx context.Context, _ *fs.File, src usermem.IOSequence, _ int64) (int64, error) {
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return rw.Pipe.Write(ctx, src)
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}
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// ReadFrom implements fs.FileOperations.WriteTo.
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func (rw *ReaderWriter) ReadFrom(ctx context.Context, _ *fs.File, r io.Reader, count int64) (int64, error) {
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return rw.Pipe.ReadFrom(ctx, r, count)
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}
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// Ioctl implements fs.FileOperations.Ioctl.
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func (rw *ReaderWriter) Ioctl(ctx context.Context, _ *fs.File, io usermem.IO, args arch.SyscallArguments) (uintptr, error) {
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return rw.Pipe.Ioctl(ctx, io, args)
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}
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