Date: Mon, 19 Jan 2004 18:58:42 +0100
From: martin f krafft <madduck@madduck.net>
To: linux kernel mailing list <linux-kernel@vger.kernel.org>,
       linux-usb-users@lists.sourceforge.net
Subject: [solved] failing to force-claim USB interface
Message-ID: <20040119175842.GA8346@piper.madduck.net>
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	linux-usb-users@lists.sourceforge.net
References: <20040119164627.GA29146@piper.madduck.net> <20040119154633.GA3797@piper.madduck.net>
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also sprach Martin F Krafft <krafft@ailab.ch> [2004.01.19.1646 +0100]:
>   struct usb_device *dev;
>   [...]
>   sprintf(path, "/proc/bus/usb/%s/%s", dev->bus->dirname, dev->filename);
>   int fd =3D open(path);
>   struct usbdevfs_ioctl command =3D { 0, USBDEVFS_DISCONNECT, 0 };
>   ioctl (fd, USBDEVFS_IOCTL, &command) < 0

I was using the wrong fd. The following works:

  struct usb_device *dev;
  [...]
  struct usb_device_handle udev =3D usb_open(dev);
  struct usbdevfs_ioctl command =3D { 0, USBDEVFS_DISCONNECT, 0 };
  ioctl(udev->fd, USBDEVFS_IOCTL, &command)

Now the only thing left to figure out is how the libusb library
expects us to do this, because struct usb_device_handle; is not
implemented in the exported interface.

I guess the solution is to implement the above functionality in
libusb itself.

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