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 <sched.h>
#include <sys/types.h>
#include <cstdint>
#include <string>
#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,
const std::string& hostname,
bool avoid_pivot_root,
bool allow_mount_propagation);
static void InitializeInitialNamespaces(uid_t uid, gid_t gid);
Namespace(bool allow_unrestricted_networking, Mounts mounts,
std::string hostname, bool allow_mount_propagation);
// Stores information about this namespace in the protobuf structure.
void GetNamespaceDescription(NamespaceDescription* pb_description) const;
int32_t clone_flags() const { return clone_flags_; }
Mounts& mounts() { return mounts_; }
const Mounts& mounts() const { return mounts_; }
const std::string& hostname() const { return hostname_; }
bool allow_mount_propagation() const { return allow_mount_propagation_; }
private:
int32_t clone_flags_ = CLONE_NEWUSER | CLONE_NEWNS | CLONE_NEWUTS |
CLONE_NEWPID | CLONE_NEWIPC | CLONE_NEWNET;
Mounts mounts_;
std::string hostname_;
bool allow_mount_propagation_ = false;
};
} // namespace sandbox2
#endif // SANDBOXED_API_SANDBOX2_NAMESPACE_H_