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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.

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Elevate privileges between Python program ( and Inter-process_communication ) (self.linux)

submitted 6 months ago by SpongeB0B to c/[email protected]

10 comments fedilink hide all child comments

Hi everyone,

I have a Python program (A) that run under a regular user account. (good)

When some events occur in (A) I need to modify my nftables and only the root is allowed to do so.

I've come up with 3 ways to do that (if you know other please share) but I don't which would be the best.

Make a sudo call from (A) with from subprocess import run but I will need to store the password ! and I don't think is possible to keep it encrypted and decrypted when need it (it's a flaw)
.
Make (A) writing a file with the requests. Create a (B) daemon (that run as root) that check that file every X and do the necessary
.
Make (A) do an IPC ( Linux socket ) to (B) daemon (that run as root) and does the necessary.

I suppose that the solution 2 is less heavy that the 3 ? But if I'm not mistaken it will react also slower ?

Thanks.

🐧

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[–] [email protected] 1 points 6 months ago* (last edited 6 months ago)

Method 2 could use inotify to wake up when the file changes. It wouldn't have to poll. Method 3 could launch from inetd so it wouldn't have to always be running if these events are infrequent.