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#pragma once
#include <chrono>
#include <exception>
#include <fstream>
#include <string>
namespace sysfs
{
inline std::string make_sysfs_path(const std::string& path,
const std::string& type,
const std::string& id,
const std::string& entry)
{
using namespace std::literals;
if (entry.empty())
{
return path + "/"s + type + id;
}
return path + "/"s + type + id + "_"s + entry;
}
/** @brief Return the path to the phandle file matching value in io-channels.
*
* This function will take two passed in paths.
* One path is used to find the io-channels file.
* The other path is used to find the phandle file.
* The 4 byte phandle value is read from the phandle file(s).
* The 4 byte phandle value and 4 byte index value is read from io-channels.
* When a match is found, the path to the matching phandle file is returned.
*
* @param[in] iochanneldir - Path to file for getting phandle from io-channels
* @param[in] phandledir - Path to use for reading from phandle file
*
* @return Path to phandle file with value matching that in io-channels
*/
std::string findPhandleMatch(const std::string& iochanneldir,
const std::string& phandledir);
/** @brief Find hwmon instances from an open-firmware device tree path
*
* Look for a matching hwmon instance given an
* open firmware device path.
*
* @param[in] ofNode- The open firmware device path.
*
* @returns[in] - The hwmon instance path or an empty
* string if no match is found.
*/
std::string findHwmonFromOFPath(const std::string& ofNode);
/** @brief Find hwmon instances from a device path
*
* Look for a matching hwmon instance given a device path that
* starts with /devices. This path is the DEVPATH udev attribute
* for the device except it has the '/hwmon/hwmonN' stripped off.
*
* @param[in] devPath - The device path.
*
* @return - The hwmon instance path or an empty
* string if no match is found.
*/
std::string findHwmonFromDevPath(const std::string& devPath);
/** @brief Return the path to use for a call out.
*
* Return an empty string if a callout path cannot be
* found.
*
* @param[in] instancePath - /sys/class/hwmon/hwmon<N> path.
*
* @return Path to use for call out
*/
std::string findCalloutPath(const std::string& instancePath);
} // namespace sysfs
// vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4
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