Re: [Avf-fuse-dev] File system interactivity

[Luca F. <ffe...@cs...>]

Il Tue, 28 Sep 2004 15:55:58 +0000,  Vincenzo Ciancia <vin...@ya...> ha scritto:

> It would not be possible generally speaking, since it might not be an 
> interactive program but rather a daemon, or a GUI program creating the 
> file. 

ok

> If you use the latest CVS however you should be able to get the 
> PID for the caller, and by looking in /proc you should be able to find 
> the process tty or something similar. 

Yes I get it with 'ps -u' as Miklos said.

> Perhaps it would be better to 
> redesign your program not to have such interactivity

Ok, but my file system is a layer between the user and a package manager.
A package manager like Debian APT is mainly interactive, since by default
it calls debconf to set some configuration options as each package is installed.

I know I can specify DEBIAN_FRONTEND=noninteractive, but I'd like to provide
packages configuration (if I can).
The solution comes to me now (!). Looking at caller PID I read /proc/PID/environ
searching for DISPLAY variable.
If it is set I try to set it also for my daemon (pkgfsd) and run debconf with X frontend.
Otherwise debconf  runs with noninteractive frontend. :)

> e.g. extended attributes of files to set per-file options, or a 
> configuration file for your filesystem.

I think I'm going to learn something more about extended attributes.
Thank you 
Luca 

-- 
Non ci toglieranno mai....la LIBERTA'!!!
Luca Ferroni
ICQ #317977679
www.cs.unibo.it/~fferroni/