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/* LIBUSB-WIN32, Generic Windows USB Library
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* Copyright (c) 2002-2005 Stephan Meyer <ste_meyer@web.de>
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#include "libusb_driver.h"
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NTSTATUS claim_interface(libusb_device_t *dev, int interface)
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DEBUG_MESSAGE("claim_interface(): interface %d", interface);
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if(!dev->config.value)
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DEBUG_ERROR("claim_interface(): device is not configured");
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return STATUS_INVALID_DEVICE_STATE;
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if(interface >= LIBUSB0_MAX_NUMBER_OF_INTERFACES)
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DEBUG_ERROR("claim_interface(): interface number %d too high",
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return STATUS_INVALID_PARAMETER;
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if(!dev->config.interfaces[interface].valid)
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DEBUG_ERROR("claim_interface(): interface %d does not exist", interface);
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return STATUS_INVALID_PARAMETER;
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if(dev->config.interfaces[interface].claimed)
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DEBUG_ERROR("claim_interface(): could not claim interface %d, "
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"interface is already claimed", interface);
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return STATUS_DEVICE_BUSY;
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dev->config.interfaces[interface].claimed = TRUE;
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return STATUS_SUCCESS;