sandboxed-api/sandboxed_api/sandbox2/namespace.h

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// Copyright 2019 Google LLC
//
// 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
//
// https://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.
// The sandbox2::Namespace class defines ways of inserting the sandboxed process
// into Linux namespaces.
#ifndef SANDBOXED_API_SANDBOX2_NAMESPACE_H_
#define SANDBOXED_API_SANDBOX2_NAMESPACE_H_
#include <sys/types.h>
#include <cstdint>
#include <memory>
#include <string>
#include "absl/base/macros.h"
#include "sandboxed_api/sandbox2/mounts.h"
#include "sandboxed_api/sandbox2/violation.pb.h"
namespace sandbox2 {
class Namespace final {
public:
// Performs the namespace setup (mounts, write the uid_map, etc.).
static void InitializeNamespaces(uid_t uid, gid_t gid, int32_t clone_flags,
const Mounts& mounts, bool mount_proc,
const std::string& hostname,
bool avoid_pivot_root);
static void InitializeInitialNamespaces(uid_t uid, gid_t gid);
Namespace() = delete;
Namespace(const Namespace&) = delete;
Namespace& operator=(const Namespace&) = delete;
Namespace(bool allow_unrestricted_networking, Mounts mounts,
std::string hostname);
void DisableUserNamespace();
// Returns all needed CLONE_NEW* flags.
int32_t GetCloneFlags() const;
// Stores information about this namespace in the protobuf structure.
void GetNamespaceDescription(NamespaceDescription* pb_description);
Mounts& mounts() { return mounts_; }
const Mounts& mounts() const { return mounts_; }
const std::string& hostname() const { return hostname_; }
private:
friend class StackTracePeer;
int32_t clone_flags_;
Mounts mounts_;
std::string hostname_;
};
} // namespace sandbox2
#endif // SANDBOXED_API_SANDBOX2_NAMESPACE_H_