On Tue, Jun 13, 2017 at 3:21 PM, Andrey Konovalov <andreyknvl@xxxxxxxxxx> wrote: > Hi! > > I'm trying to use gadgetfs to fuzz USB device drivers by simply > connecting random devices for now. > > What I want to achieve right now is the following: > > 1. mount gadgetfs > 2. emulate connection of a new USB device > 3. wait for the device to finish initializing > 4. unmount gadgetfs > 5. goto 1 > > The question is how do I wait for the device to finish initializing > (the corresponding USB driver to finish probing?) before unmounting > gadgetfs? As I understand, when I write device description to > "/dev/gadget/dummy_udc" the initialization happens asynchronously > after writing is done. > You can use inotify on the state file inside a udc's sysfs directory. It's awesome like that. Here's a sample code that doesn't do any cleanups because I'm lazy: https://gist.github.com/talshorer/61be1bc3472cc2a7b4866b9bd5a239ca -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
