1 /* 2 * Internal header for libusb-compat-0.1 3 * Copyright (C) 2008 Daniel Drake <dsd@gentoo.org> 4 * Copyright (c) 2000-2003 Johannes Erdfelt <johannes@erdfelt.com> 5 * 6 * This library is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public 8 * License as published by the Free Software Foundation; either 9 * version 2.1 of the License, or (at your option) any later version. 10 * 11 * This library is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Lesser General Public License for more details. 15 * 16 * You should have received a copy of the GNU Lesser General Public 17 * License along with this library; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 19 */ 20 21 #ifndef __LIBUSB_USBI_H__ 22 #define __LIBUSB_USBI_H__ 23 24 /* Some quick and generic macros for the simple kind of lists we use */ 25 #define LIST_ADD(begin, ent) \ 26 do { \ 27 if (begin) { \ 28 ent->next = begin; \ 29 ent->next->prev = ent; \ 30 } else \ 31 ent->next = NULL; \ 32 ent->prev = NULL; \ 33 begin = ent; \ 34 } while(0) 35 36 #define LIST_DEL(begin, ent) \ 37 do { \ 38 if (ent->prev) \ 39 ent->prev->next = ent->next; \ 40 else \ 41 begin = ent->next; \ 42 if (ent->next) \ 43 ent->next->prev = ent->prev; \ 44 ent->prev = NULL; \ 45 ent->next = NULL; \ 46 } while (0) 47 48 struct usb_dev_handle { 49 libusb_device_handle *handle; 50 struct usb_device *device; 51 52 /* libusb-0.1 is buggy w.r.t. interface claiming. it allows you to claim 53 * multiple interfaces but only tracks the most recently claimed one, 54 * which is used for usb_set_altinterface(). we clone the buggy behaviour 55 * here. */ 56 int last_claimed_interface; 57 }; 58 59 #endif 60 61