linux（中标麒麟） 获取硬盘信息

中标麒麟使用中，有时候需要获取硬盘大小，防止在使用电脑过程中硬盘空间不足而不自知。

下面提供一个函数获取所有分区的信息：

struct DiskInfo{
    float fUsed;
    float fRemaining;
};

 

//磁盘剩余空间 20201122 sdl
double GetDiskRemainingSize(QList<DiskInfo>& listDiskInfo)
{
    double pUsed;//已用空间
    double pSurplus = -1;//剩余空间
    float fUsed;//已经使用
    float fRemaining;//剩余
    QProcess process;
    process.start("df -k");
    process.waitForFinished();
    process.readLine();
    while(!process.atEnd()){
        QString str = process.readLine();//查询/dev/root空间
        if(str.startsWith("/dev/root")){//"/dev/root"
            str.replace("\n","");
            str.replace(QRegExp("( ){1,}")," ");
            QStringList lst = str.split(" ");
            if(lst.size() > 5){
                fUsed = lst[2].toFloat() / 1024;
                fRemaining = lst[3].toFloat() / 1024;
                QString str = QString("dev/root:be used-%1,remaining-%2").arg(fUsed).arg(fRemaining);
                LOG(DEBUG) << str;
                DiskInfo diskInfo;
                diskInfo.fUsed = fUsed;
                diskInfo.fRemaining = fRemaining;
                listDiskInfo.push_back(diskInfo);
            }
        }
        if(str.startsWith("/dev/sd")){
            str.replace("\n","");
            str.replace(QRegExp("( ){1,}")," ");
            QStringList lst = str.split(" ");
            if(lst.size() > 5){
                fUsed = lst[2].toFloat() / 1024;
                fRemaining = lst[3].toFloat() / 1024;
                QString str = QString("dev/root:be used-%1,remaining-%2").arg(fUsed).arg(fRemaining);
                LOG(DEBUG) << str;
                DiskInfo diskInfo;
                diskInfo.fUsed = fUsed;
                diskInfo.fRemaining = fRemaining;
                listDiskInfo.push_back(diskInfo);
            }
        }
    }
    return pSurplus;
}

另外，提供两个示例程序参考：

https://files-cdn.cnblogs.com/files/warmlight/demo1%E7%B1%BB%E4%BC%BC%E4%BA%8EDiskSize.zip

 

https://files-cdn.cnblogs.com/files/warmlight/DiskSize.rar

 

判断当前exe目录所在分区信息：

QString GetModuleDir()
{
    QString dir = QApplication::applicationDirPath();
    return dir;
}

 

//磁盘剩余空间 20201122 sdl
double GetDiskRemainingSize(QList<DiskInfo>& listDiskInfo)
{
    double pUsed;//已用空间
    double pSurplus = -1;//剩余空间
    float fUsed;//已经使用
    float fRemaining;//剩余

    QString strCmd = GetModuleDir();
    strCmd = "df -k " + strCmd;//直接读取Rbin文件夹 所在分区的信息
    QProcess process;
    process.start(strCmd);
    process.waitForFinished();
    process.readLine();
    QString strRead = process.readLine();

    strRead.replace("\n","");
    strRead.replace(QRegExp("( ){1,}")," ");
    QStringList lst = strRead.split(" ");
    if(lst.size() > 5){
        fUsed = lst[2].toFloat() / 1024;
        fRemaining = lst[3].toFloat() / 1024;
        QString str = QString("dev/root:be used-%1,remaining-%2").arg(fUsed).arg(fRemaining);
        LOG(DEBUG) << str;
        DiskInfo diskInfo;
        diskInfo.fUsed = fUsed;
        diskInfo.fRemaining = fRemaining;
        listDiskInfo.push_back(diskInfo);
    }

    return pSurplus;
}