diff options
Diffstat (limited to 'pkg/sentry/fs/ext/inline_file.go')
-rw-r--r-- | pkg/sentry/fs/ext/inline_file.go | 66 |
1 files changed, 0 insertions, 66 deletions
diff --git a/pkg/sentry/fs/ext/inline_file.go b/pkg/sentry/fs/ext/inline_file.go deleted file mode 100644 index b9adfe548..000000000 --- a/pkg/sentry/fs/ext/inline_file.go +++ /dev/null @@ -1,66 +0,0 @@ -// Copyright 2019 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 ext - -import ( - "io" -) - -// inlineFile is a type of regular file. All the data here is stored in the -// inode.Data() array. -type inlineFile struct { - regFile regularFile -} - -// Compiles only if inlineFile implements fileReader. -var _ fileReader = (*inlineFile)(nil) - -// getFileReader implements fileReader.getFileReader. -func (f *inlineFile) getFileReader(_ io.ReaderAt, _ uint64, offset uint64) io.Reader { - diskInode := f.regFile.inode.diskInode - return &inlineReader{offset: offset, data: diskInode.Data()[:diskInode.Size()]} -} - -// newInlineFile is the inlineFile constructor. -func newInlineFile(regFile regularFile) *inlineFile { - file := &inlineFile{regFile: regFile} - file.regFile.impl = file - return file -} - -// inlineReader implements io.Reader which can read the underlying data. This -// is not thread safe. -type inlineReader struct { - offset uint64 - data []byte -} - -// Compiles only if inlineReader implements io.Reader. -var _ io.Reader = (*inlineReader)(nil) - -// Read implements io.Reader.Read. -func (r *inlineReader) Read(dst []byte) (int, error) { - if len(dst) == 0 { - return 0, nil - } - - if int(r.offset) >= len(r.data) { - return 0, io.EOF - } - - n := copy(dst, r.data[r.offset:]) - r.offset += uint64(n) - return n, nil -} |