130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood/* 230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood * Copyright (C) 2010 The Android Open Source Project 330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood * 430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood * Licensed under the Apache License, Version 2.0 (the "License"); 530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood * you may not use this file except in compliance with the License. 630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood * You may obtain a copy of the License at 730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood * 830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood * http://www.apache.org/licenses/LICENSE-2.0 930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood * 1030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood * Unless required by applicable law or agreed to in writing, software 1130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood * distributed under the License is distributed on an "AS IS" BASIS, 1230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood * See the License for the specific language governing permissions and 1430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood * limitations under the License. 1530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood */ 1630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 17e15af09876c5e0301084f46b8036aed147cf9c24Mike Lockwood// #define DEBUG 1 18e15af09876c5e0301084f46b8036aed147cf9c24Mike Lockwood#if DEBUG 19e15af09876c5e0301084f46b8036aed147cf9c24Mike Lockwood 20e15af09876c5e0301084f46b8036aed147cf9c24Mike Lockwood#ifdef USE_LIBLOG 21e15af09876c5e0301084f46b8036aed147cf9c24Mike Lockwood#define LOG_TAG "usbhost" 22e15af09876c5e0301084f46b8036aed147cf9c24Mike Lockwood#include "utils/Log.h" 238d66c49258ac4f59bd67c23c9c914cca81f85b01Steve Block#define D ALOGD 24e15af09876c5e0301084f46b8036aed147cf9c24Mike Lockwood#else 25e15af09876c5e0301084f46b8036aed147cf9c24Mike Lockwood#define D printf 26e15af09876c5e0301084f46b8036aed147cf9c24Mike Lockwood#endif 27e15af09876c5e0301084f46b8036aed147cf9c24Mike Lockwood 28e15af09876c5e0301084f46b8036aed147cf9c24Mike Lockwood#else 29e15af09876c5e0301084f46b8036aed147cf9c24Mike Lockwood#define D(...) 30e15af09876c5e0301084f46b8036aed147cf9c24Mike Lockwood#endif 31e15af09876c5e0301084f46b8036aed147cf9c24Mike Lockwood 3230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <stdio.h> 3330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <stdlib.h> 3430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <unistd.h> 3530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <string.h> 3630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 3730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <sys/ioctl.h> 3830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <sys/types.h> 3930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <sys/time.h> 4030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <sys/inotify.h> 4130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <dirent.h> 4230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <fcntl.h> 4330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <errno.h> 4430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <ctype.h> 4530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <pthread.h> 4630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 4730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <linux/usbdevice_fs.h> 4830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <asm/byteorder.h> 4930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 5030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include "usbhost/usbhost.h" 5130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 52f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby#define DEV_DIR "/dev" 53f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby#define USB_FS_DIR "/dev/bus/usb" 54203f102028c4df33c191d8cd610775eba8d5366dMike Lockwood#define USB_FS_ID_SCANNER "/dev/bus/usb/%d/%d" 557d700f8bdce747a26e3ee4737683194d77286ba3Mike Lockwood#define USB_FS_ID_FORMAT "/dev/bus/usb/%03d/%03d" 5630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 57c4c00d8e6a215020be87f6702844267e105e1f0eMike Lockwood// From drivers/usb/core/devio.c 58c4c00d8e6a215020be87f6702844267e105e1f0eMike Lockwood// I don't know why this isn't in a kernel header 59c4c00d8e6a215020be87f6702844267e105e1f0eMike Lockwood#define MAX_USBFS_BUFFER_SIZE 16384 6030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 616ac3aa157493ef24bc837b679dd8292fad8961e0Mike Lockwoodstruct usb_host_context { 627a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood int fd; 636ac3aa157493ef24bc837b679dd8292fad8961e0Mike Lockwood}; 646ac3aa157493ef24bc837b679dd8292fad8961e0Mike Lockwood 6530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodstruct usb_device { 6630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood char dev_name[64]; 67ec9e7b1c1844e66c39a4f63ded8208c1717380f8Mike Lockwood unsigned char desc[4096]; 6830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood int desc_length; 6930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood int fd; 7030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood int writeable; 7130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood}; 7230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 7330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodstatic inline int badname(const char *name) 7430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 7530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood while(*name) { 7630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if(!isdigit(*name++)) return 1; 7730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 7830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return 0; 7930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 8030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 816cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Gobystatic int find_existing_devices_bus(char *busname, 826cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby usb_device_added_cb added_cb, 836cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby void *client_data) 846cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby{ 856cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby char devname[32]; 866cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby DIR *devdir; 876cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby struct dirent *de; 886cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby int done = 0; 896cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby 906cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby devdir = opendir(busname); 916cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby if(devdir == 0) return 0; 926cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby 936cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby while ((de = readdir(devdir)) && !done) { 946cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby if(badname(de->d_name)) continue; 956cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby 966cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby snprintf(devname, sizeof(devname), "%s/%s", busname, de->d_name); 976cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby done = added_cb(devname, client_data); 986cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby } // end of devdir while 996cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby closedir(devdir); 1006cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby 1016cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby return done; 1026cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby} 1036cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby 1047a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood/* returns true if one of the callbacks indicates we are done */ 1057a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwoodstatic int find_existing_devices(usb_device_added_cb added_cb, 1067a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood void *client_data) 10730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 1086cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby char busname[32]; 1096cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby DIR *busdir; 11030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct dirent *de; 1117a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood int done = 0; 11230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 11330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood busdir = opendir(USB_FS_DIR); 114f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby if(busdir == 0) return 0; 11530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 1167a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood while ((de = readdir(busdir)) != 0 && !done) { 11730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if(badname(de->d_name)) continue; 11830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 1196cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby snprintf(busname, sizeof(busname), "%s/%s", USB_FS_DIR, de->d_name); 1206cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby done = find_existing_devices_bus(busname, added_cb, 1216cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby client_data); 1226cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby } 12330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood closedir(busdir); 1247a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood 1257a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood return done; 1267a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood} 1277a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood 128f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Gobystatic void watch_existing_subdirs(struct usb_host_context *context, 129f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby int *wds, int wd_count) 130f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby{ 131f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby char path[100]; 132f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby int i, ret; 133f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby 134f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby wds[0] = inotify_add_watch(context->fd, USB_FS_DIR, IN_CREATE | IN_DELETE); 135f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby if (wds[0] < 0) 136f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby return; 137f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby 138f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby /* watch existing subdirectories of USB_FS_DIR */ 139f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby for (i = 1; i < wd_count; i++) { 140f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby snprintf(path, sizeof(path), "%s/%03d", USB_FS_DIR, i); 141f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby ret = inotify_add_watch(context->fd, path, IN_CREATE | IN_DELETE); 142f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby if (ret >= 0) 143f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby wds[i] = ret; 144f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby } 145f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby} 146f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby 1477a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwoodstruct usb_host_context *usb_host_init() 1487a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood{ 1497a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood struct usb_host_context *context = calloc(1, sizeof(struct usb_host_context)); 1507a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood if (!context) { 1517a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood fprintf(stderr, "out of memory in usb_host_context\n"); 1527a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood return NULL; 1537a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood } 1547a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood context->fd = inotify_init(); 1557a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood if (context->fd < 0) { 1567a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood fprintf(stderr, "inotify_init failed\n"); 1577a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood free(context); 1587a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood return NULL; 1597a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood } 1607a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood return context; 1617a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood} 1627a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood 1637a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwoodvoid usb_host_cleanup(struct usb_host_context *context) 1647a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood{ 1657a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood close(context->fd); 1667a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood free(context); 16730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 16830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 1697a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwoodvoid usb_host_run(struct usb_host_context *context, 1707a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood usb_device_added_cb added_cb, 1717a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood usb_device_removed_cb removed_cb, 172a805519ceedc53afa5453a6d8a7d80038d885d9fMike Lockwood usb_discovery_done_cb discovery_done_cb, 1737a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood void *client_data) 17430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 17530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct inotify_event* event; 17630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood char event_buf[512]; 17730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood char path[100]; 1787a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood int i, ret, done = 0; 179f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby int wd, wdd, wds[10]; 18030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood int wd_count = sizeof(wds) / sizeof(wds[0]); 18130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 18230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood D("Created device discovery thread\n"); 18330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 18430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood /* watch for files added and deleted within USB_FS_DIR */ 185f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby for (i = 0; i < wd_count; i++) 186f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby wds[i] = -1; 187f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby 18830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood /* watch the root for new subdirectories */ 189f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby wdd = inotify_add_watch(context->fd, DEV_DIR, IN_CREATE | IN_DELETE); 190f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby if (wdd < 0) { 19130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood fprintf(stderr, "inotify_add_watch failed\n"); 192e8849d190a3097274dcb64416e564538a1017054Mike Lockwood if (discovery_done_cb) 193e8849d190a3097274dcb64416e564538a1017054Mike Lockwood discovery_done_cb(client_data); 1947a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood return; 19530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 19630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 197f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby watch_existing_subdirs(context, wds, wd_count); 19830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 19930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood /* check for existing devices first, after we have inotify set up */ 2006cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby done = find_existing_devices(added_cb, client_data); 201a805519ceedc53afa5453a6d8a7d80038d885d9fMike Lockwood if (discovery_done_cb) 202a805519ceedc53afa5453a6d8a7d80038d885d9fMike Lockwood done |= discovery_done_cb(client_data); 20330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 2047a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood while (!done) { 2057a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood ret = read(context->fd, event_buf, sizeof(event_buf)); 20630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (ret >= (int)sizeof(struct inotify_event)) { 20730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood event = (struct inotify_event *)event_buf; 20830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood wd = event->wd; 209f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby if (wd == wdd) { 210f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby if ((event->mask & IN_CREATE) && !strcmp(event->name, "bus")) { 211f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby watch_existing_subdirs(context, wds, wd_count); 212f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby done = find_existing_devices(added_cb, client_data); 213f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby } else if ((event->mask & IN_DELETE) && !strcmp(event->name, "bus")) { 214f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby for (i = 0; i < wd_count; i++) { 215f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby if (wds[i] >= 0) { 216f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby inotify_rm_watch(context->fd, wds[i]); 217f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby wds[i] = -1; 218f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby } 219f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby } 220f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby } 221f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby } else if (wd == wds[0]) { 22230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood i = atoi(event->name); 22330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood snprintf(path, sizeof(path), "%s/%s", USB_FS_DIR, event->name); 2246cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby D("%s subdirectory %s: index: %d\n", (event->mask & IN_CREATE) ? 2256cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby "new" : "gone", path, i); 22630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (i > 0 && i < wd_count) { 2276cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby if (event->mask & IN_CREATE) { 2286cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby ret = inotify_add_watch(context->fd, path, 2296cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby IN_CREATE | IN_DELETE); 230f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby if (ret >= 0) 2316cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby wds[i] = ret; 2326cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby done = find_existing_devices_bus(path, added_cb, 2336cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby client_data); 2346cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby } else if (event->mask & IN_DELETE) { 2356cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby inotify_rm_watch(context->fd, wds[i]); 2366cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby wds[i] = -1; 2376cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby } 23830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 23930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } else { 2407a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood for (i = 1; i < wd_count && !done; i++) { 24130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (wd == wds[i]) { 24230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood snprintf(path, sizeof(path), "%s/%03d/%s", USB_FS_DIR, i, event->name); 24330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (event->mask == IN_CREATE) { 24430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood D("new device %s\n", path); 2457a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood done = added_cb(path, client_data); 24630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } else if (event->mask == IN_DELETE) { 24730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood D("gone device %s\n", path); 2487a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood done = removed_cb(path, client_data); 24930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 25030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 25130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 25230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 25330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 25430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 25530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 25630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 25730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodstruct usb_device *usb_device_open(const char *dev_name) 25830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 259cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood int fd, did_retry = 0, writeable = 1; 26030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 261ec9e7b1c1844e66c39a4f63ded8208c1717380f8Mike Lockwood D("usb_device_open %s\n", dev_name); 262ec9e7b1c1844e66c39a4f63ded8208c1717380f8Mike Lockwood 26330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodretry: 26430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood fd = open(dev_name, O_RDWR); 26530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (fd < 0) { 26630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood /* if we fail, see if have read-only access */ 26730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood fd = open(dev_name, O_RDONLY); 268e15af09876c5e0301084f46b8036aed147cf9c24Mike Lockwood D("usb_device_open open returned %d errno %d\n", fd, errno); 269e15af09876c5e0301084f46b8036aed147cf9c24Mike Lockwood if (fd < 0 && (errno == EACCES || errno == ENOENT) && !did_retry) { 27030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood /* work around race condition between inotify and permissions management */ 27130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood sleep(1); 27230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood did_retry = 1; 27330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood goto retry; 27430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 27530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 276cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood if (fd < 0) 277cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood return NULL; 278cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood writeable = 0; 27930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood D("[ usb open read-only %s fd = %d]\n", dev_name, fd); 28030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 28130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 282cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood struct usb_device* result = usb_device_new(dev_name, fd); 283cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood if (result) 284cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood result->writeable = writeable; 285cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood return result; 286cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood} 287cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood 288cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwoodvoid usb_device_close(struct usb_device *device) 289cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood{ 290cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood close(device->fd); 291cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood free(device); 292cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood} 293cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood 294cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwoodstruct usb_device *usb_device_new(const char *dev_name, int fd) 295cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood{ 296cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood struct usb_device *device = calloc(1, sizeof(struct usb_device)); 297cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood int length; 298cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood 299ec9e7b1c1844e66c39a4f63ded8208c1717380f8Mike Lockwood D("usb_device_new %s fd: %d\n", dev_name, fd); 300ec9e7b1c1844e66c39a4f63ded8208c1717380f8Mike Lockwood 301cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood if (lseek(fd, 0, SEEK_SET) != 0) 302cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood goto failed; 30330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood length = read(fd, device->desc, sizeof(device->desc)); 304ec9e7b1c1844e66c39a4f63ded8208c1717380f8Mike Lockwood D("usb_device_new read returned %d errno %d\n", length, errno); 30530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (length < 0) 306cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood goto failed; 30730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 30893aff72d9b469f4b77468bab654cd65243b662e6Mike Lockwood strncpy(device->dev_name, dev_name, sizeof(device->dev_name) - 1); 30930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood device->fd = fd; 31030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood device->desc_length = length; 311cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood // assume we are writeable, since usb_device_get_fd will only return writeable fds 312cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood device->writeable = 1; 31330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return device; 314cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood 315cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwoodfailed: 31630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood close(fd); 31730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood free(device); 31830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return NULL; 31930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 32030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 321cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwoodstatic int usb_device_reopen_writeable(struct usb_device *device) 32230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 323cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood if (device->writeable) 324cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood return 1; 325cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood 326cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood int fd = open(device->dev_name, O_RDWR); 327cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood if (fd >= 0) { 328cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood close(device->fd); 329cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood device->fd = fd; 330cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood device->writeable = 1; 331cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood return 1; 332cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood } 333cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood D("usb_device_reopen_writeable failed errno %d\n", errno); 334cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood return 0; 335cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood} 336cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood 337cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwoodint usb_device_get_fd(struct usb_device *device) 338cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood{ 339cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood if (!usb_device_reopen_writeable(device)) 340cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood return -1; 341cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood return device->fd; 34230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 34330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 34430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodconst char* usb_device_get_name(struct usb_device *device) 34530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 34630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return device->dev_name; 34730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 34830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 349203f102028c4df33c191d8cd610775eba8d5366dMike Lockwoodint usb_device_get_unique_id(struct usb_device *device) 350203f102028c4df33c191d8cd610775eba8d5366dMike Lockwood{ 351203f102028c4df33c191d8cd610775eba8d5366dMike Lockwood int bus = 0, dev = 0; 352203f102028c4df33c191d8cd610775eba8d5366dMike Lockwood sscanf(device->dev_name, USB_FS_ID_SCANNER, &bus, &dev); 353203f102028c4df33c191d8cd610775eba8d5366dMike Lockwood return bus * 1000 + dev; 354203f102028c4df33c191d8cd610775eba8d5366dMike Lockwood} 355203f102028c4df33c191d8cd610775eba8d5366dMike Lockwood 35607eb4af174f31c449a86dd459e2c81702f74acf1Mike Lockwoodint usb_device_get_unique_id_from_name(const char* name) 35707eb4af174f31c449a86dd459e2c81702f74acf1Mike Lockwood{ 35807eb4af174f31c449a86dd459e2c81702f74acf1Mike Lockwood int bus = 0, dev = 0; 35907eb4af174f31c449a86dd459e2c81702f74acf1Mike Lockwood sscanf(name, USB_FS_ID_SCANNER, &bus, &dev); 36007eb4af174f31c449a86dd459e2c81702f74acf1Mike Lockwood return bus * 1000 + dev; 36107eb4af174f31c449a86dd459e2c81702f74acf1Mike Lockwood} 36207eb4af174f31c449a86dd459e2c81702f74acf1Mike Lockwood 3637d700f8bdce747a26e3ee4737683194d77286ba3Mike Lockwoodchar* usb_device_get_name_from_unique_id(int id) 3647d700f8bdce747a26e3ee4737683194d77286ba3Mike Lockwood{ 3657d700f8bdce747a26e3ee4737683194d77286ba3Mike Lockwood int bus = id / 1000; 3667d700f8bdce747a26e3ee4737683194d77286ba3Mike Lockwood int dev = id % 1000; 3677d700f8bdce747a26e3ee4737683194d77286ba3Mike Lockwood char* result = (char *)calloc(1, strlen(USB_FS_ID_FORMAT)); 3687d700f8bdce747a26e3ee4737683194d77286ba3Mike Lockwood snprintf(result, strlen(USB_FS_ID_FORMAT) - 1, USB_FS_ID_FORMAT, bus, dev); 3697d700f8bdce747a26e3ee4737683194d77286ba3Mike Lockwood return result; 3707d700f8bdce747a26e3ee4737683194d77286ba3Mike Lockwood} 3717d700f8bdce747a26e3ee4737683194d77286ba3Mike Lockwood 37230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwooduint16_t usb_device_get_vendor_id(struct usb_device *device) 37330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 37430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct usb_device_descriptor* desc = (struct usb_device_descriptor*)device->desc; 37530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return __le16_to_cpu(desc->idVendor); 37630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 37730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 37830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwooduint16_t usb_device_get_product_id(struct usb_device *device) 37930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 38030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct usb_device_descriptor* desc = (struct usb_device_descriptor*)device->desc; 38130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return __le16_to_cpu(desc->idProduct); 38230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 38330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 38450372073d2919480fb32d56cb3b91663b9fca0f1Mike Lockwoodconst struct usb_device_descriptor* usb_device_get_device_descriptor(struct usb_device *device) 38550372073d2919480fb32d56cb3b91663b9fca0f1Mike Lockwood{ 38650372073d2919480fb32d56cb3b91663b9fca0f1Mike Lockwood return (struct usb_device_descriptor*)device->desc; 38750372073d2919480fb32d56cb3b91663b9fca0f1Mike Lockwood} 38850372073d2919480fb32d56cb3b91663b9fca0f1Mike Lockwood 3891b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwoodchar* usb_device_get_string(struct usb_device *device, int id) 3901b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood{ 3911b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood char string[256]; 3921b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood __u16 buffer[128]; 3931b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood __u16 languages[128]; 3941b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood int i, result; 3951b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood int languageCount = 0; 3961b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood 3971b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood string[0] = 0; 3981b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood memset(languages, 0, sizeof(languages)); 39930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 40030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood // read list of supported languages 401120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood result = usb_device_control_transfer(device, 4021b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_DEVICE, USB_REQ_GET_DESCRIPTOR, 403120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood (USB_DT_STRING << 8) | 0, 0, languages, sizeof(languages), 0); 40430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (result > 0) 40530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood languageCount = (result - 2) / 2; 40630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 40730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood for (i = 1; i <= languageCount; i++) { 40830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood memset(buffer, 0, sizeof(buffer)); 40930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 410120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood result = usb_device_control_transfer(device, 4111b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_DEVICE, USB_REQ_GET_DESCRIPTOR, 412120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood (USB_DT_STRING << 8) | id, languages[i], buffer, sizeof(buffer), 0); 41330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (result > 0) { 41430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood int i; 41530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood // skip first word, and copy the rest to the string, changing shorts to bytes. 41630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood result /= 2; 41730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood for (i = 1; i < result; i++) 41830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood string[i - 1] = buffer[i]; 41930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood string[i - 1] = 0; 42030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return strdup(string); 42130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 42230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 42330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 42430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return NULL; 42530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 42630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 42730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodchar* usb_device_get_manufacturer_name(struct usb_device *device) 42830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 42930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct usb_device_descriptor *desc = (struct usb_device_descriptor *)device->desc; 43030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 43130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (desc->iManufacturer) 43230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return usb_device_get_string(device, desc->iManufacturer); 43330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood else 43430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return NULL; 43530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 43630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 43730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodchar* usb_device_get_product_name(struct usb_device *device) 43830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 43930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct usb_device_descriptor *desc = (struct usb_device_descriptor *)device->desc; 44030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 44130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (desc->iProduct) 44230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return usb_device_get_string(device, desc->iProduct); 44330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood else 44430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return NULL; 44530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 44630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 44730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodchar* usb_device_get_serial(struct usb_device *device) 44830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 44930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct usb_device_descriptor *desc = (struct usb_device_descriptor *)device->desc; 45030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 45130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (desc->iSerialNumber) 45230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return usb_device_get_string(device, desc->iSerialNumber); 45330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood else 45430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return NULL; 45530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 45630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 45730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodint usb_device_is_writeable(struct usb_device *device) 45830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 45930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return device->writeable; 46030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 46130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 46230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodvoid usb_descriptor_iter_init(struct usb_device *device, struct usb_descriptor_iter *iter) 46330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 46430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood iter->config = device->desc; 46530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood iter->config_end = device->desc + device->desc_length; 46630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood iter->curr_desc = device->desc; 46730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 46830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 46930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodstruct usb_descriptor_header *usb_descriptor_iter_next(struct usb_descriptor_iter *iter) 47030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 47130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct usb_descriptor_header* next; 47230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (iter->curr_desc >= iter->config_end) 47330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return NULL; 47430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood next = (struct usb_descriptor_header*)iter->curr_desc; 47530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood iter->curr_desc += next->bLength; 47630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return next; 47730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 47830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 47930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodint usb_device_claim_interface(struct usb_device *device, unsigned int interface) 48030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 48130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return ioctl(device->fd, USBDEVFS_CLAIMINTERFACE, &interface); 48230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 48330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 48430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodint usb_device_release_interface(struct usb_device *device, unsigned int interface) 48530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 48630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return ioctl(device->fd, USBDEVFS_RELEASEINTERFACE, &interface); 48730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 48830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 489ec9e7b1c1844e66c39a4f63ded8208c1717380f8Mike Lockwoodint usb_device_connect_kernel_driver(struct usb_device *device, 490ec9e7b1c1844e66c39a4f63ded8208c1717380f8Mike Lockwood unsigned int interface, int connect) 491ec9e7b1c1844e66c39a4f63ded8208c1717380f8Mike Lockwood{ 492ec9e7b1c1844e66c39a4f63ded8208c1717380f8Mike Lockwood struct usbdevfs_ioctl ctl; 493ec9e7b1c1844e66c39a4f63ded8208c1717380f8Mike Lockwood 494ec9e7b1c1844e66c39a4f63ded8208c1717380f8Mike Lockwood ctl.ifno = interface; 495ec9e7b1c1844e66c39a4f63ded8208c1717380f8Mike Lockwood ctl.ioctl_code = (connect ? USBDEVFS_CONNECT : USBDEVFS_DISCONNECT); 496ec9e7b1c1844e66c39a4f63ded8208c1717380f8Mike Lockwood ctl.data = NULL; 497ec9e7b1c1844e66c39a4f63ded8208c1717380f8Mike Lockwood return ioctl(device->fd, USBDEVFS_IOCTL, &ctl); 498ec9e7b1c1844e66c39a4f63ded8208c1717380f8Mike Lockwood} 499ec9e7b1c1844e66c39a4f63ded8208c1717380f8Mike Lockwood 500120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwoodint usb_device_control_transfer(struct usb_device *device, 501120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood int requestType, 502120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood int request, 503120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood int value, 504120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood int index, 505120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood void* buffer, 506120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood int length, 507120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood unsigned int timeout) 508120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood{ 509120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood struct usbdevfs_ctrltransfer ctrl; 510120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood 511120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood // this usually requires read/write permission 512120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood if (!usb_device_reopen_writeable(device)) 513120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood return -1; 514120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood 515120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood memset(&ctrl, 0, sizeof(ctrl)); 516120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood ctrl.bRequestType = requestType; 517120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood ctrl.bRequest = request; 518120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood ctrl.wValue = value; 519120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood ctrl.wIndex = index; 520120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood ctrl.wLength = length; 521120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood ctrl.data = buffer; 522120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood ctrl.timeout = timeout; 523120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood return ioctl(device->fd, USBDEVFS_CONTROL, &ctrl); 524120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood} 525120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood 526120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwoodint usb_device_bulk_transfer(struct usb_device *device, 527120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood int endpoint, 528120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood void* buffer, 529120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood int length, 530120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood unsigned int timeout) 531120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood{ 532120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood struct usbdevfs_bulktransfer ctrl; 533120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood 534c4c00d8e6a215020be87f6702844267e105e1f0eMike Lockwood // need to limit request size to avoid EINVAL 535c4c00d8e6a215020be87f6702844267e105e1f0eMike Lockwood if (length > MAX_USBFS_BUFFER_SIZE) 536c4c00d8e6a215020be87f6702844267e105e1f0eMike Lockwood length = MAX_USBFS_BUFFER_SIZE; 537c4c00d8e6a215020be87f6702844267e105e1f0eMike Lockwood 538120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood memset(&ctrl, 0, sizeof(ctrl)); 539120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood ctrl.ep = endpoint; 540120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood ctrl.len = length; 541120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood ctrl.data = buffer; 542120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood ctrl.timeout = timeout; 543120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood return ioctl(device->fd, USBDEVFS_BULK, &ctrl); 544120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood} 545120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood 546e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwoodstruct usb_request *usb_request_new(struct usb_device *dev, 547e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood const struct usb_endpoint_descriptor *ep_desc) 54830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 549e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood struct usbdevfs_urb *urb = calloc(1, sizeof(struct usbdevfs_urb)); 550e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood if (!urb) 551e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood return NULL; 552e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood 553e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood if ((ep_desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK) 554e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood urb->type = USBDEVFS_URB_TYPE_BULK; 555e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood else if ((ep_desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) 556e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood urb->type = USBDEVFS_URB_TYPE_INTERRUPT; 557e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood else { 558e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood D("Unsupported endpoint type %d", ep_desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK); 559e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood free(urb); 560e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood return NULL; 561e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood } 562e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood urb->endpoint = ep_desc->bEndpointAddress; 563e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood 564e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood struct usb_request *req = calloc(1, sizeof(struct usb_request)); 565e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood if (!req) { 566e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood free(urb); 567e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood return NULL; 568e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood } 569e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood 570e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood req->dev = dev; 571e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood req->max_packet_size = __le16_to_cpu(ep_desc->wMaxPacketSize); 572e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood req->private_data = urb; 573b5d68a3c28d0b7a947373344cbda2a2369d0b67dMike Lockwood req->endpoint = urb->endpoint; 574e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood urb->usercontext = req; 575e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood 576e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood return req; 57730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 57830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 579e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwoodvoid usb_request_free(struct usb_request *req) 58030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 581e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood free(req->private_data); 582e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood free(req); 58330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 58430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 585e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwoodint usb_request_queue(struct usb_request *req) 58630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 587e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood struct usbdevfs_urb *urb = (struct usbdevfs_urb*)req->private_data; 58830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood int res; 58930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 59030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood urb->status = -1; 591e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood urb->buffer = req->buffer; 592c4c00d8e6a215020be87f6702844267e105e1f0eMike Lockwood // need to limit request size to avoid EINVAL 593c4c00d8e6a215020be87f6702844267e105e1f0eMike Lockwood if (req->buffer_length > MAX_USBFS_BUFFER_SIZE) 594c4c00d8e6a215020be87f6702844267e105e1f0eMike Lockwood urb->buffer_length = MAX_USBFS_BUFFER_SIZE; 595c4c00d8e6a215020be87f6702844267e105e1f0eMike Lockwood else 596c4c00d8e6a215020be87f6702844267e105e1f0eMike Lockwood urb->buffer_length = req->buffer_length; 59730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 59830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood do { 599e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood res = ioctl(req->dev->fd, USBDEVFS_SUBMITURB, urb); 60030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } while((res < 0) && (errno == EINTR)); 60130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 60230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return res; 60330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 60430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 605e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwoodstruct usb_request *usb_request_wait(struct usb_device *dev) 60630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 607e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood struct usbdevfs_urb *urb = NULL; 608e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood struct usb_request *req = NULL; 60930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood int res; 61030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 61130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood while (1) { 612e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood int res = ioctl(dev->fd, USBDEVFS_REAPURB, &urb); 61330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood D("USBDEVFS_REAPURB returned %d\n", res); 61430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (res < 0) { 61530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if(errno == EINTR) { 61630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood continue; 61730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 61830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood D("[ reap urb - error ]\n"); 619e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood return NULL; 62030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } else { 62130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood D("[ urb @%p status = %d, actual = %d ]\n", 622e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood urb, urb->status, urb->actual_length); 623e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood req = (struct usb_request*)urb->usercontext; 624e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood req->actual_length = urb->actual_length; 62530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 62630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood break; 62730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 628e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood return req; 62930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 63030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 631e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwoodint usb_request_cancel(struct usb_request *req) 63230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 633e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood struct usbdevfs_urb *urb = ((struct usbdevfs_urb*)req->private_data); 634e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood return ioctl(req->dev->fd, USBDEVFS_DISCARDURB, &urb); 63530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 63630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 637