mirror of
https://github.com/google/sandboxed-api.git
synced 2024-03-22 13:11:30 +08:00
58 lines
1.8 KiB
C
58 lines
1.8 KiB
C
|
// Copyright 2019 Google LLC. All Rights Reserved.
|
||
|
|
//
|
||
|
|
// 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.
|
||
|
|
|
||
|
|
#ifndef SANDBOXED_API_EMBED_FILE_H_
|
||
|
|
#define SANDBOXED_API_EMBED_FILE_H_
|
||
|
|
|
||
|
|
#include <vector>
|
||
|
|
|
||
|
|
#include "sandboxed_api/file_toc.h"
|
||
|
|
#include "absl/container/flat_hash_map.h"
|
||
|
|
#include "absl/synchronization/mutex.h"
|
||
|
|
|
||
|
|
namespace sapi {
|
||
|
|
|
||
|
|
// The class provides primitives for converting FileToc structures into
|
||
|
|
// executable files.
|
||
|
|
class EmbedFile {
|
||
|
|
public:
|
||
|
|
EmbedFile() = default;
|
||
|
|
|
||
|
|
EmbedFile(const EmbedFile&) = delete;
|
||
|
|
EmbedFile& operator=(const EmbedFile&) = delete;
|
||
|
|
|
||
|
|
// Returns the pointer to the per-process EmbedFile object.
|
||
|
|
static EmbedFile* GetEmbedFileSingleton();
|
||
|
|
|
||
|
|
// Returns a file-descriptor for a given FileToc.
|
||
|
|
int GetFdForFileToc(const FileToc* toc);
|
||
|
|
|
||
|
|
// Returns a duplicated file-descriptor for a given FileToc.
|
||
|
|
int GetDupFdForFileToc(const FileToc* toc);
|
||
|
|
|
||
|
|
private:
|
||
|
|
// Creates an executable file for a given FileToc, and return its
|
||
|
|
// file-descriptors (-1 in case of errors).
|
||
|
|
static int CreateFdForFileToc(const FileToc* toc);
|
||
|
|
|
||
|
|
// List of File TOCs and corresponding file-descriptors.
|
||
|
|
absl::flat_hash_map<const FileToc*, int> file_tocs_
|
||
|
|
GUARDED_BY(file_tocs_mutex_);
|
||
|
|
absl::Mutex file_tocs_mutex_;
|
||
|
|
};
|
||
|
|
|
||
|
|
} // namespace sapi
|
||
|
|
|
||
|
|
#endif // SANDBOXED_API_EMBED_FILE_H_
|