Merge "fs_mgr: Allow commas in boot device paths." am: f9459a45

        return std::set<std::string>(boot_devices.begin(), boot_devices.end());

    }

    std::string cmdline;

    if (android::base::ReadFileToString("/proc/cmdline", &cmdline)) {

        std::set<std::string> boot_devices;

        const std::string cmdline_key = "androidboot.boot_device";

        for (const auto& [key, value] : fs_mgr_parse_boot_config(cmdline)) {

            if (key == cmdline_key) {

                boot_devices.emplace(value);

            }

        }

        if (!boot_devices.empty()) {

            return boot_devices;

        }

    }

    // Fallback to extract boot devices from fstab.

    Fstab fstab;

    if (!ReadDefaultFstab(&fstab)) {