QFileSystemWatcher

[minty]

I guess QFileSystemWatcher only works on "normal" files. I wanted to use it to monitor files in /proc/net/ so I can determine when certain network interfaces become active/deactive

I could use QFileSystemWatcher on something in /var/log to tell me about network changes, but you have to have root privileges to do so.

I've done a lot of googling to see how to get this kind of notification in my program but nothing yet. Anybody here have an idea.

Thanks in advance

[wysota]

Why not use HAL/udev for that?

[freeskydiver]

Why not use HAL/udev for that?

Exists Qt classes who using HAL? If so then where? I need this, too.

[wysota]

QtDbus module is available as part of Qt.

[freeskydiver]

QtDbus module is available as part of Qt.

Unfortunately is the QtDBus only available on Linux. It's not platform independet.
And how I can call the HAL from this?

[wysota]

/proc/ is not platform independent as well QtDBus should be available on every unix platform where HAL is working. HAL is a DBus service.

[freeskydiver]

/proc/ is not platform independent as well

That's sure right
I need this on a AIX and on a Windows machine. Work this?

[wysota]

Windows machines don't have /proc/ nor HAL. You'll have to use the native API there. HAL probably won't work on AIX as well.

[freeskydiver]

I thought it.
Which guy from the many good developers here, create a cross-platform class which handled the HAL?

[wysota]

I think we're misunderstanding each other when it comes to HAL. I'm talking about this:
http://freedesktop.org/wiki/Software/hal

[freeskydiver]

I think we're misunderstanding each other when it comes to HAL. I'm talking about this:
http://freedesktop.org/wiki/Software/hal

Oh no... we talk from the same. Windows have an hardware abstraction layer. It's encapsulated in the file "hal.dll".

[wysota]

But it's something completely different. Hardware Abstraction Layer is just a concept that can have many implementations. HAL by freedesktop is one of them and Windows HAL is another. But they have nothing in common.

[minty]

Wysoto

Thanks for the info on HAL. I thought about that but when I run dbus-viewer, I do not see any interfaces to HAL, I am using OpenSuse 10.2, whose dbus may not support HAL.

I do see that the HAL daemons running, and when I run "hal-device" from a command line it does list all of my network interfaces (and more).

Do you think I should upgrade my dbus package

[wysota]

I don't think an update will help. But it's possible that there's something mixed up in your system. I never used HAL so I can't help you with that.