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55 lines
1.9 KiB
55 lines
1.9 KiB
// Copyright (c) 2016-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under both the GPLv2 (found in the
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// COPYING file in the root directory) and Apache 2.0 License
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// (found in the LICENSE.Apache file in the root directory).
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#pragma once
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#if !defined(OS_WIN)
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#include <string>
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#include "env/fs_remap.h"
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#include "rocksdb/file_system.h"
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namespace ROCKSDB_NAMESPACE {
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class ChrootFileSystem : public RemapFileSystem {
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public:
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ChrootFileSystem(const std::shared_ptr<FileSystem>& base,
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const std::string& chroot_dir);
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static const char* kClassName() { return "ChrootFS"; }
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const char* Name() const override { return kClassName(); }
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IOStatus GetTestDirectory(const IOOptions& options, std::string* path,
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IODebugContext* dbg) override;
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Status PrepareOptions(const ConfigOptions& options) override;
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protected:
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// Returns status and expanded absolute path including the chroot directory.
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// Checks whether the provided path breaks out of the chroot. If it returns
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// non-OK status, the returned path should not be used.
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std::pair<IOStatus, std::string> EncodePath(const std::string& path) override;
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// Similar to EncodePath() except assumes the basename in the path hasn't been
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// created yet.
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std::pair<IOStatus, std::string> EncodePathWithNewBasename(
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const std::string& path) override;
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private:
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std::string chroot_dir_;
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};
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// Returns an Env that translates paths such that the root directory appears to
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// be chroot_dir. chroot_dir should refer to an existing directory.
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//
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// This class has not been fully analyzed for providing strong security
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// guarantees.
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Env* NewChrootEnv(Env* base_env, const std::string& chroot_dir);
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std::shared_ptr<FileSystem> NewChrootFileSystem(
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const std::shared_ptr<FileSystem>& base, const std::string& chroot_dir);
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} // namespace ROCKSDB_NAMESPACE
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#endif // !defined(OS_WIN)
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