Does linux generate any event when...

rahul_kulkarni · 11-06-2006, 04:38 AM

Hello All,

Does linux os generate any event when it finds U.S.B. in U.S.B. driver? If yes, how to catch that from the program? If not, is ther any other way to do this?

Thanks in advance,
// Rahul

acid_kewpie · 11-06-2006, 04:49 AM

well the underlying framework that manages usb devices is udevd in conjunction with hotplugd. these are very much event based and chuck all sorts of messages around. having said that i don't really know what you mean by "when it finds U.S.B. in U.S.B. driver" so can't really be sure that's what you're after.

rahul_kulkarni · 11-06-2006, 05:06 AM

Thanks for the reply. Here is what I want to do:

Basically, I want to read and copy the files (on harddisk)available on usb when sombody inserts usb in a drive. Instead of polling usb drive continuously I would like my daemon to work on event based call back function.

Regards,
// Rahul

acid_kewpie · 11-07-2006, 06:11 AM

that's just what udev and hotplug are there for. based on any number of identifiable traits, e.g. device type, maker, serial number, block name, they will run a program or perform other such tasks. you would not need your own daemon to do this, it's already done.