Findind input event device path with libudev

Hi,

I found an example on how to use libudev to iterate over devices present in the system to find its precise path since the path can be different everytime we plug a device into the system.

http://www.signal11.us/oss/udev/

In this example, the type of device searched is hidraw, however I have already tried input, event, etc and none of this match criterias in the following function:

|*udev_enumerate_add_match_subsystem*(enumerate,*"hidraw"*);|

Only hidraw seems to work.

Can I use this technic to found the path a of input event device?

Thanks,

With my best regards,

Nuno

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Hi,

After digging a little bit around this i found that my problem is with this function:

dev = udev_device *udev_device_get_parent_with_subsystem_devtype(dev,"usb","usb_device");

dev is always null. He can't find me the usb device for my input device. Maybe i'm not specifiying subsystem and dev type correctly.

If I make several calls to udev_device_get_parent I can get to the correct device.

Does anyone knows what should be the correct subsystem and dev type pair to find the parent usb device for an input device?