Listen for harware change events from the linux kernel or udev

Question

I need to run some code on storage device mounting and unmounting.
How can i listen for these events on linux?

• I was thinking on adding some udev rules to run some script (any know-how in this matter is appreciated).
• But I would much rather listen for events from the kernel in some netlink socket with my daemon (just like udev does) or something like that.

Answer 1

You have to listen to the "uevent" signal. Attach a callback to this signal and wait for the notification.

Answer 2

You can use libudev or the more convenient, glib based gudev to monitor udev events in C.