Running application with user privillegions.

JonB

@nicholas_ru
Again, I don't know what that phrase means. You might trying typing in your questions/answers with full detail in your native language into Google and asking it to translate to English, that may give a more meaningful question.

We have explained what the possibilities are for running programs under Linux setuid/as root. You have to pick one. You have to try the suggestions you have been given. I don't even believe what you said about chmod u+s not being available under your Debian. Qt as a framework has nothing to say or do about setuid. QProcess can be used to run other programs in the standard Linux exec-type way. Just because you say "i am think in Qt framework must be integrated this is function." does not make it so there is magically something else in Qt we have not discussed.

At this point I don't think anybody here knows what you actually want, what your problem is or what you have tried from the suggestions.

SimonSchroeder

There is a reason why you can't just run anything with root privileges. And under normal circumstance you should not try to circumvent it. The most important question is if you really need to run something as root (while your own software is not started with root privileges). Qt does not provide anything special to run a process as root. You need to use OS functionality to run an elevated process (you can use QProcess to start sudo or use any of the other methods mentioned before). In the case of sudo it is up to you to ask the user for the password and hand it to sudo. But, even this is a bad idea because it is really easy to leak the password for an attacker.

nicholas_ru

No,no attacker not recieve permissions, but idea not bad. I love Qt and this function for me needed for devleopment, because user also must be entering password.

JonB

@nicholas_ru
We have given you the alternative approaches for running setuid. Qt itself is not going to add anything in this area.

nicholas_ru

Well then my development will be limited and I'll have to look for other ways to implement it.

JonB

@nicholas_ru
Gave you the 3 ways to implement it above in https://forum.qt.io/post/837390. Don't know what other ways you want or need, don't know why you don't pursue these. You seem to ask the question but not prepared to follow the suggestions. Up to you.

SGaist

@nicholas_ru Since you used GParted as an example, use the same technique they use.

https://gitlab.gnome.org/GNOME/gparted/-/blob/master/src/main.cc?ref_type=heads
https://gitlab.gnome.org/GNOME/gparted/-/blob/master/org.gnome.gparted.policy.in.in?ref_type=heads

Pl45m4

@SGaist

Nice to know :)

*.in.in file?!
So a file template for a file template for an actual file? :D

SGaist

@Pl45m4 said in Running application with user privillegions.:

@SGaist

Nice to know :)

*.in.in file?!
So a file template for a file template for an actual file? :D

There's never enough indirection... :-D

kaixoo

I think he wants to run a process with administrative privileges by showing a UAC (User Account Control) dialog. This is what, for example, balenaEtcher does when it needs to burn a drive. Is this correct?

JonB

@kaixoo If you read the OP is under Linux, so there is no such thing as "UAC".

nicholas_ru

Linus Torvalds hate C++ because it dificult and not t easy.Not UAC, read up, Linux.It so for me, i liked, Unixpled

J.Hilk

Torvalds allowed Rust into the kernel (2022) but not C++.

Grandpa is doing his own thing and I stopped questioning stuff.

JonB

@nicholas_ru said in Running application with user privillegions.:

Linus Torvalds hate C++ because it dificult and not t easy.Not UAC, read up, Linux.It so for me, i liked, Unixpled

Don't know what you're saying, but the ability to set or change user privilege has nothing to do with C++ and really little to do with programming.

nicholas_ru

It's talk about them, that code must be easy, and user permissions change must be flug also easy.

Pl45m4

@nicholas_ru

If changing user permissions were that easy, it would defeat its purpose.

nicholas_ru

It must easy for developers and users.

nicholas_ru

@J.Hilk grandfather create for you Linux and GIT,you use it

SGaist

Just in case: KDE has Polkit-Qt

nicholas_ru

I use LXDE.This is GNOME.Gvfs.I am not knowladge how understand.Paradox