如何以 root 权限启动 QProcess？
我需要从 Qt 程序启动 gphoto2 。我这样做：
QString gphotoProgram = "/usr/bin/gphoto2";
QStringList gphotoArguments;
gphotoArguments << "--capture-image";
QProcess *gphotoProcess = new QProcess(this);
gphotoProcess->start(gphotoProgram, gphotoArguments);
但它永远不会以这种方式进入 Running 状态，因为 gphoto2 通常需要管理员权限才能在命令行上启动。
如何以适当的权限启动此 QProcess 以使 gphoto2 正常工作？
编辑：我明确指出，我希望用户不必输入密码，这意味着 gksudo、kdesudo 或任何其他图形解决方案对我来说都不是有效的选项。
I need to launch gphoto2 from a Qt program. I do this:
QString gphotoProgram = "/usr/bin/gphoto2";
QStringList gphotoArguments;
gphotoArguments << "--capture-image";
QProcess *gphotoProcess = new QProcess(this);
gphotoProcess->start(gphotoProgram, gphotoArguments);
but it never enters the Running state this way, as gphoto2 usually needs admin rights to be launched on command line.
How can I start this QProcess with proper rights to make gphoto2 working?
Edit: I precise that I would prefer the user to not have to enter a password, which means gksudo, kdesudo or any other graphical solution is not a valid option for me.
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我强烈建议找到一种方法来允许 gphoto2 在登录用户的权限下运行。也许这篇文章 有一些有用的信息。
I would strongly recommend finding a way to allow gphoto2 to be run with the logged in user's permissions. Perhaps this article has some helpful info.
如果您的发行版启用了 sudo，请尝试将“gksudo”添加到进程的命令行中：
如果用户帐户被授权为 sudo-er，它将询问用户密码，以便程序可以使用 root 权限运行。
If you have a distribution with sudo enabled, try to add "gksudo" to the command line of your process:
If the user account is authorized as a sudo-er, it will ask the user password so that the program can run with root rights.
您还可以使用PolicyKit以sudo权限启动QProcess。
pkexec 命令
QString gphotoProgram = "pkexec /usr/bin/gphoto2";
You can also use PolicyKit to start QProcess with sudo rights.
pkexec command
QString gphotoProgram = "pkexec /usr/bin/gphoto2";
GNOME 和 KDE 是否仍然有自己的图形 sudo 包装器？ （我自己就是 Windows 用户。）您可以使用 QProcess 启动“sudo”并让它处理海拔和随后的 gphoto 启动。
Don't GNOME and KDE still have their own graphical sudo wrappers? (I'm a Windows guy myself.) You could use QProcess to launch "sudo" and let it take care of the elevation and subsequent gphoto launch.