357 lines
11 KiB
C++
357 lines
11 KiB
C++
#include "SdCardManager.h"
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#include "scratchApi.h"
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#include "linux/utility/utility.h"
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#include "fsfw/ipc/MutexFactory.h"
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#include "fsfw/serviceinterface/ServiceInterface.h"
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#include <fstream>
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#include <memory>
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#include <filesystem>
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SdCardManager* SdCardManager::factoryInstance = nullptr;
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SdCardManager::SdCardManager() {
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}
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SdCardManager::~SdCardManager() {
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}
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void SdCardManager::create() {
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if(factoryInstance == nullptr) {
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factoryInstance = new SdCardManager();
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}
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}
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SdCardManager* SdCardManager::instance() {
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SdCardManager::create();
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return SdCardManager::factoryInstance;
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}
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ReturnValue_t SdCardManager::switchOnSdCard(sd::SdCard sdCard, bool doMountSdCard,
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SdStatusPair* statusPair) {
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ReturnValue_t result = HasReturnvaluesIF::RETURN_OK;
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std::unique_ptr<SdStatusPair> sdStatusPtr;
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if(statusPair == nullptr) {
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sdStatusPtr = std::make_unique<SdStatusPair>();
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statusPair = sdStatusPtr.get();
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result = getSdCardActiveStatus(*statusPair);
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if(result != HasReturnvaluesIF::RETURN_OK) {
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return result;
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}
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}
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// Not allowed, this function turns on one SD card
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if(sdCard == sd::SdCard::BOTH) {
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sif::warning << "SdCardManager::switchOffSdCard: API does not allow sd::SdStatus::BOTH"
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<< std::endl;
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return HasReturnvaluesIF::RETURN_FAILED;
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}
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sd::SdStatus targetStatus;
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if(sdCard == sd::SdCard::SLOT_0) {
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targetStatus = statusPair->first;
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}
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else if(sdCard == sd::SdCard::SLOT_1) {
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targetStatus = statusPair->second;
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}
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else {
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// Should not happen
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targetStatus = sd::SdStatus::OFF;
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}
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auto switchCall = [&]() {
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if(targetStatus == sd::SdStatus::ON) {
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if(not doMountSdCard) {
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return ALREADY_ON;
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}
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else {
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return mountSdCard(sdCard);
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}
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}
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else if(targetStatus == sd::SdStatus::MOUNTED) {
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return ALREADY_MOUNTED;
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}
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else if(targetStatus == sd::SdStatus::OFF) {
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return setSdCardState(sdCard, true);
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}
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else {
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return HasReturnvaluesIF::RETURN_FAILED;
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}
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};
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result = switchCall();
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if(result != HasReturnvaluesIF::RETURN_OK or not doMountSdCard) {
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return result;
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}
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return mountSdCard(sdCard);
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}
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ReturnValue_t SdCardManager::switchOffSdCard(sd::SdCard sdCard, bool doUnmountSdCard,
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SdStatusPair* statusPair) {
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std::pair<sd::SdStatus, sd::SdStatus> active;
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ReturnValue_t result = getSdCardActiveStatus(active);
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if(result != HasReturnvaluesIF::RETURN_OK) {
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return result;
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}
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// Not allowed, this function turns off one SD card
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if(sdCard == sd::SdCard::BOTH) {
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sif::warning << "SdCardManager::switchOffSdCard: API does not allow sd::SdStatus::BOTH"
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<< std::endl;
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return HasReturnvaluesIF::RETURN_FAILED;
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}
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if(sdCard == sd::SdCard::SLOT_0) {
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if(active.first == sd::SdStatus::OFF) {
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return ALREADY_OFF;
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}
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}
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else if(sdCard == sd::SdCard::SLOT_1) {
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if(active.second == sd::SdStatus::OFF) {
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return ALREADY_OFF;
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}
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}
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if(doUnmountSdCard) {
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result = unmountSdCard(sdCard);
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if(result != HasReturnvaluesIF::RETURN_OK) {
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return result;
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}
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}
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return setSdCardState(sdCard, false);
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}
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ReturnValue_t SdCardManager::setSdCardState(sd::SdCard sdCard, bool on) {
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using namespace std;
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string sdstring = "";
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string statestring = "";
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if(sdCard == sd::SdCard::SLOT_0) {
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sdstring = "0";
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}
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else if(sdCard == sd::SdCard::SLOT_1) {
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sdstring = "1";
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}
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if(on) {
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statestring = "on";
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}
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else {
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statestring = "off";
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}
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ostringstream command;
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command << "q7hw sd set " << sdstring << " " << statestring;
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int result = system(command.str().c_str());
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if(result == 0) {
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return HasReturnvaluesIF::RETURN_OK;
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}
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sif::warning << "SdCardManager::setSdCardState: system call failed with code " <<
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result << std::endl;
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return SYSTEM_CALL_ERROR;
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}
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ReturnValue_t SdCardManager::getSdCardActiveStatus(SdStatusPair& active) {
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using namespace std;
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if(not filesystem::exists(SD_STATE_FILE)) {
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return STATUS_FILE_NEXISTS;
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}
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// Now the file should exist in any case. Still check whether it exists.
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fstream sdStatus(SD_STATE_FILE);
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if (not sdStatus.good()) {
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return STATUS_FILE_NEXISTS;
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}
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string line;
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uint8_t idx = 0;
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sd::SdCard currentSd = sd::SdCard::SLOT_0;
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// Process status file line by line
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while (std::getline(sdStatus, line)) {
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processSdStatusLine(active, line, idx, currentSd);
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}
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return HasReturnvaluesIF::RETURN_OK;
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}
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ReturnValue_t SdCardManager::mountSdCard(sd::SdCard sdCard) {
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using namespace std;
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if(sdCard == sd::SdCard::BOTH) {
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sif::warning << "SdCardManager::mountSdCard: API does not allow sd::SdStatus::BOTH"
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<< std::endl;
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return HasReturnvaluesIF::RETURN_FAILED;
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}
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string mountDev;
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string mountPoint;
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if(sdCard == sd::SdCard::SLOT_0) {
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mountDev = SD_0_DEV_NAME;
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mountPoint = SD_0_MOUNT_POINT;
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}
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else if(sdCard == sd::SdCard::SLOT_1) {
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mountDev = SD_1_DEV_NAME;
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mountPoint = SD_1_MOUNT_POINT;
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}
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if(not filesystem::exists(mountDev)) {
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sif::warning << "SdCardManager::mountSdCard: Device file does not exists. Make sure to"
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" turn on the SD card" << std::endl;
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return MOUNT_ERROR;
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}
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string sdMountCommand = "mount " + mountDev + " " + mountPoint;
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int result = system(sdMountCommand.c_str());
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if (result != 0) {
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utility::handleSystemError(result, "SdCardManager::mountSdCard");
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return SYSTEM_CALL_ERROR;
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}
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return HasReturnvaluesIF::RETURN_OK;
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}
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ReturnValue_t SdCardManager::unmountSdCard(sd::SdCard sdCard) {
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using namespace std;
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if(sdCard == sd::SdCard::BOTH) {
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sif::warning << "SdCardManager::unmountSdCard: API does not allow sd::SdStatus::BOTH"
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<< std::endl;
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return HasReturnvaluesIF::RETURN_FAILED;
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}
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string mountPoint;
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if(sdCard == sd::SdCard::SLOT_0) {
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mountPoint = SD_0_MOUNT_POINT;
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}
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else if(sdCard == sd::SdCard::SLOT_1) {
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mountPoint = SD_1_MOUNT_POINT;
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}
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if(not filesystem::exists(mountPoint)) {
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sif::error << "SdCardManager::unmountSdCard: Default mount point " << mountPoint <<
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"does not exist" << std::endl;
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return UNMOUNT_ERROR;
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}
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if(filesystem::is_empty(mountPoint)) {
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// The mount point will always exist, but if it is empty, that is strong hint that
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// the SD card was not mounted properly. Still proceed with operation.
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sif::warning << "SdCardManager::unmountSdCard: Mount point is empty!" << std::endl;
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}
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string sdUnmountCommand = "umount " + mountPoint;
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int result = system(sdUnmountCommand.c_str());
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if (result != 0) {
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utility::handleSystemError(result, "SdCardManager::unmountSdCard");
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return SYSTEM_CALL_ERROR;
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}
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return HasReturnvaluesIF::RETURN_OK;
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}
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ReturnValue_t SdCardManager::sanitizeState(SdStatusPair* statusPair, sd::SdCard prefSdCard) {
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std::unique_ptr<SdStatusPair> sdStatusPtr;
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if(prefSdCard == sd::SdCard::NONE) {
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ReturnValue_t result = getPreferredSdCard(prefSdCard);
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if(result != HasReturnvaluesIF::RETURN_OK) {}
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}
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if(statusPair == nullptr) {
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sdStatusPtr = std::make_unique<SdStatusPair>();
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statusPair = sdStatusPtr.get();
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getSdCardActiveStatus(*statusPair);
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}
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if(statusPair->first == sd::SdStatus::ON) {
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return mountSdCard(prefSdCard);
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}
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return switchOnSdCard(prefSdCard, true, statusPair);
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}
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void SdCardManager::processSdStatusLine(std::pair<sd::SdStatus, sd::SdStatus> &active,
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std::string& line, uint8_t& idx, sd::SdCard& currentSd) {
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using namespace std;
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istringstream iss(line);
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string word;
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bool slotLine = false;
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bool mountLine = false;
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while(iss >> word) {
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if (word == "Slot") {
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slotLine = true;
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}
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if(word == "Mounted") {
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mountLine = true;
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}
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if(slotLine) {
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if (word == "1:") {
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currentSd = sd::SdCard::SLOT_1;
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}
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if(word == "on") {
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if(currentSd == sd::SdCard::SLOT_0) {
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active.first = sd::SdStatus::ON;
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}
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else {
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active.second = sd::SdStatus::ON;
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}
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}
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else if (word == "off") {
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if(currentSd == sd::SdCard::SLOT_0) {
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active.first = sd::SdStatus::OFF;
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}
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else {
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active.second = sd::SdStatus::OFF;
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}
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}
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}
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if(mountLine) {
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if(currentSd == sd::SdCard::SLOT_0) {
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active.first = sd::SdStatus::MOUNTED;
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}
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else {
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active.second = sd::SdStatus::MOUNTED;
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}
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}
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if(idx > 5) {
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sif::warning << "SdCardManager::sdCardActive: /tmp/sd_status.txt has more than 6 "
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"lines and might be invalid!" << std::endl;
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}
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}
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idx++;
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}
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ReturnValue_t SdCardManager::getPreferredSdCard(sd::SdCard& sdCard) const {
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uint8_t prefSdCard = 0;
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ReturnValue_t result = scratch::readNumber(scratch::PREFERED_SDC_KEY, prefSdCard);
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if(result != HasReturnvaluesIF::RETURN_OK) {
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return result;
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}
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sdCard = static_cast<sd::SdCard>(prefSdCard);
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return HasReturnvaluesIF::RETURN_OK;
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}
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ReturnValue_t SdCardManager::setPreferredSdCard(sd::SdCard sdCard) {
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if(sdCard == sd::SdCard::BOTH) {
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return HasReturnvaluesIF::RETURN_FAILED;
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}
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return scratch::writeNumber(scratch::PREFERED_SDC_KEY, static_cast<uint8_t>(sdCard));
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}
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ReturnValue_t SdCardManager::updateSdCardStateFile() {
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// Use q7hw utility and pipe the command output into the state file
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std::string updateCmd = "q7hw sd info all > " + std::string(SD_STATE_FILE);
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int result = std::system(updateCmd.c_str());
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if(result == 0) {
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return HasReturnvaluesIF::RETURN_OK;
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}
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sif::warning << "SdCardManager::updateSdCardStateFile: system call failed with code " <<
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result << std::endl;
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return HasReturnvaluesIF::RETURN_FAILED;
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}
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std::string SdCardManager::getCurrentMountPrefix(sd::SdCard prefSdCard) {
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if(prefSdCard == sd::SdCard::NONE) {
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ReturnValue_t result = getPreferredSdCard(prefSdCard);
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if(result != HasReturnvaluesIF::RETURN_OK) {
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return SD_0_MOUNT_POINT;
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}
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}
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if(prefSdCard == sd::SdCard::SLOT_0) {
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return SD_0_MOUNT_POINT;
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}
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else {
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return SD_1_MOUNT_POINT;
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}
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}
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