[Nonsense][Python] Using inotify events to monitor temperature changes

kaszak696 · 2013-02-12 11:19:13

Hai thar,

I'm trying to write a little dongle that does magic when the file in /sys changes. I want it to go like this:

Watch the file, let's say '/sys/devices/platform/coretemp.0/temp2_input'.
When the file content was modified, open that file and yank the current value and do magic.
Rinse, repeat

I'm using pyinotify library for this, and there is the code snip i'm testing currently:

wm = pyinotify.WatchManager()
notify = pyinotify.Notifier(wm)
wm.add_watch('/sys/devices/platform/coretemp.0/temp2_input', pyinotify.ALL_EVENTS)
notify.loop()

The problem is, i can't seem to get any kind of response out of this. The file content keeps changing, but inotify is dead silent. When i cat this file, it shows all events like it should, but it's not what i want obviously.

Is that even possible? If yes, can you give me a hint about what i'm doing wrong?

Last edited by kaszak696 (2013-02-12 15:53:49)

Ashren · 2013-02-12 11:32:22

You need to use inotifywait instead.

kaszak696 · 2013-02-12 11:48:08

Ashren wrote:

You need to use inotifywait instead.

Same behavior.
I'm wondering if it's because these are not the 'real' files, just a representation of data from the kernel.

Stebalien · 2013-02-12 15:47:16

http://old.nabble.com/sysfs-and-inotify-td23021094.html

kaszak696 · 2013-02-12 15:52:33

Stebalien wrote:

http://old.nabble.com/sysfs-and-inotify-td23021094.html

I see, thanks.
I'm gonna stick with reading the file at interval inside a while loop.

Arch Linux

#1 2013-02-12 11:19:13

[Nonsense][Python] Using inotify events to monitor temperature changes

#2 2013-02-12 11:32:22

Re: [Nonsense][Python] Using inotify events to monitor temperature changes

#3 2013-02-12 11:48:08

Re: [Nonsense][Python] Using inotify events to monitor temperature changes

#4 2013-02-12 15:47:16

Re: [Nonsense][Python] Using inotify events to monitor temperature changes

#5 2013-02-12 15:52:33

Re: [Nonsense][Python] Using inotify events to monitor temperature changes

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