Class MountRootResolver

module/src/main/cpp/mountsinfo.cpp:210–234

};

class MountRootResolver {
private:
	std::unordered_map<dev_t, std::string> dmm;

public:
	explicit MountRootResolver(const std::vector<MountInfo>& mounts) {
		for (const auto& mount : mounts) {
			if (mount.getRoot() == "/") {
				dmm[mount.getDev()] = mount.getMountPoint();
			}
		}
	}

	~MountRootResolver() = default;

	std::string resolveRoot(const MountInfo& mount) {
		auto dev = mount.getDev();
		auto it = dmm.find(dev);
		if (it != dmm.end()) {
			if (it->second != "/")
				return it->second + mount.getRoot();
		}
		return mount.getRoot();
	}
};

std::vector<MountInfo> getMountInfo(const std::string& path = "/proc/self/mountinfo") {
	std::ifstream mi(path);