1 /* libusb-win32, Generic Windows USB Library
2 * Copyright (c) 2002-2005 Stephan Meyer <ste_meyer@web.de>
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 */
18
19
20 #include "libusb_driver.h"
21
22
get_configuration(libusb_device_t * dev,unsigned char * configuration,int * ret,int timeout)23 NTSTATUS get_configuration(libusb_device_t *dev,
24 unsigned char *configuration, int *ret,
25 int timeout)
26 {
27 NTSTATUS status = STATUS_SUCCESS;
28 URB urb;
29
30 USBMSG("timeout: %d\n", timeout);
31
32 memset(&urb, 0, sizeof(URB));
33
34 urb.UrbHeader.Function = URB_FUNCTION_GET_CONFIGURATION;
35 urb.UrbHeader.Length = sizeof(struct _URB_CONTROL_GET_CONFIGURATION_REQUEST);
36 urb.UrbControlGetConfigurationRequest.TransferBufferLength = 1;
37 urb.UrbControlGetConfigurationRequest.TransferBuffer = configuration;
38
39
40 status = call_usbd(dev, &urb, IOCTL_INTERNAL_USB_SUBMIT_URB, timeout);
41
42 if (!NT_SUCCESS(status) || !USBD_SUCCESS(urb.UrbHeader.Status))
43 {
44 USBERR("getting configuration failed: status: 0x%x, urb-status: 0x%x\n",
45 status, urb.UrbHeader.Status);
46 *ret = 0;
47 }
48 else
49 {
50 USBMSG("current configuration is: %d\n",
51 *configuration);
52 *ret = urb.UrbControlGetConfigurationRequest.TransferBufferLength;
53 }
54
55 return status;
56 }
57