Receiving notification/event/signal of usb device insertion in c++

Question

I have been looking for a while, but I have not been able to find an answer to this question. I am trying to receive a connection notification for a specific usb device. Here is what I have/know:

I am running the linux kernel version 3.2. I have the id's needed to identify the usb device. I have created a kernel module for reading and writing to the device. The kernel module has been tested and works properly. The kernel module creates /dev/Component#.

I am trying to write a program that is notified of a USB device connection event and thus will not need to loop over the /dev/Component# and check if the file exists. My hope is that there is a signal/notification/event that already exists. I have seen the libusb, but my understanding is that you are really just creating a loop that reads all the devices. I have considered adding a syscall, but recompiling the kernel isn't really an option.

Any help would be greatly appreciated.

Thanks,

SgtSquatlow

Is a hotplug script sufficient? If not, take a look at the hotplug source. — Ben Voigt, Jan 03 '13 at 18:19
I'd recommend you to add `udev` rule that will notify your deamon program upon insertion. — hate-engine, Jan 03 '13 at 19:30
Unfortunately, the code needs to be portable and not all systems that I will run the code on have/use udev. — sgtsquatlow, Jan 03 '13 at 20:33
https://github.com/Jinjinov/Usb.Events/blob/master/Usb.Events/UsbEventWatcher.Linux.c — Jinjinov, Apr 29 '20 at 07:27

score 0 · Answer 1 · edited Jan 29 '18 at 15:35

0

There is a solution using dbus. First you should install the library libdbus-glib (on Debian / Ubuntu the package is called libdbus-glib-1-dev) if it is not installed yet. Then you can peak a program here, compile the program like this:

gcc -o dbus-usb dbus-usb.c $(pkg-config --libs --cflags dbus-glib-1)

edited Jan 29 '18 at 15:35

sshine

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answered Jan 09 '13 at 14:32

elhadi dp ıpɐɥןǝ

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While this link may answer the question, it is better to include the essential parts of the answer here and provide the link for reference. Link-only answers can become invalid if the linked page changes. - [From Review](/review/low-quality-posts/18632874) – sshine Jan 26 '18 at 14:44
@Simon Shine i have linked a stackoverflow example. i cannot see how a stackoverflow link become invalid. – elhadi dp ıpɐɥןǝ Jan 29 '18 at 13:32
I'm sorry, I didn't notice at first. You're quite right. This answer was automatically flagged for being short. I've improved on the formatting (using `$(...)` instead of backticks) and upvoted it. – sshine Jan 29 '18 at 15:36

Receiving notification/event/signal of usb device insertion in c++

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