usb_linux.c revision c500be926cf07c43aeb828ae86b04b856c6b7c63
1dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 2dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Copyright (C) 2008 The Android Open Source Project 3dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * All rights reserved. 4dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 5dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Redistribution and use in source and binary forms, with or without 6dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * modification, are permitted provided that the following conditions 7dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * are met: 8dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * * Redistributions of source code must retain the above copyright 9dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * notice, this list of conditions and the following disclaimer. 10dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * * Redistributions in binary form must reproduce the above copyright 11dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * notice, this list of conditions and the following disclaimer in 12dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * the documentation and/or other materials provided with the 13dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * distribution. 14dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 15dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 18dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 19dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 20dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 22dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 25dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * SUCH DAMAGE. 27dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 28dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 29dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <stdio.h> 30dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <stdlib.h> 31dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <unistd.h> 32dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <string.h> 33dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 34dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <sys/ioctl.h> 35dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <sys/types.h> 36dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <dirent.h> 37dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <fcntl.h> 38dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <errno.h> 39dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <pthread.h> 40dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <ctype.h> 41dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 42dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <linux/usbdevice_fs.h> 43dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <linux/usbdevice_fs.h> 44dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <linux/version.h> 45dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 20) 46dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <linux/usb/ch9.h> 47dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#else 48dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <linux/usb_ch9.h> 49dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#endif 50dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <asm/byteorder.h> 51dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 52dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include "usb.h" 53dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 54b2de4db941f5329f9f19e70feff5786b2d5acbb6Dan Murphy#define MAX_RETRIES 5 55b2de4db941f5329f9f19e70feff5786b2d5acbb6Dan Murphy 56b2de4db941f5329f9f19e70feff5786b2d5acbb6Dan Murphy#ifdef TRACE_USB 57dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define DBG1(x...) fprintf(stderr, x) 58dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define DBG(x...) fprintf(stderr, x) 59dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#else 60dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define DBG(x...) 61dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define DBG1(x...) 62dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#endif 63dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 64dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstruct usb_handle 65dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 66dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char fname[64]; 67dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int desc; 68dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unsigned char ep_in; 69dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unsigned char ep_out; 70dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project}; 71dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 72dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic inline int badname(const char *name) 73dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 74dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while(*name) { 75dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(!isdigit(*name++)) return 1; 76dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 77dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 78dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 79dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 80dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic int check(void *_desc, int len, unsigned type, int size) 81dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 82dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unsigned char *desc = _desc; 83dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 84dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(len < size) return -1; 85dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(desc[0] < size) return -1; 86dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(desc[0] > len) return -1; 87dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(desc[1] != type) return -1; 88dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 89dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 90dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 91dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 92b4add9b74525210478bac702d27fdaf9cf7ab18fElliott Hughesstatic int filter_usb_device(int fd, char *ptr, int len, int writable, 93b4add9b74525210478bac702d27fdaf9cf7ab18fElliott Hughes ifc_match_func callback, 94dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int *ept_in_id, int *ept_out_id, int *ifc_id) 95dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 96dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct usb_device_descriptor *dev; 97dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct usb_config_descriptor *cfg; 98dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct usb_interface_descriptor *ifc; 99dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct usb_endpoint_descriptor *ept; 100dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct usb_ifc_info info; 101dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 102dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int in, out; 103dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unsigned i; 104dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unsigned e; 105dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 106dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(check(ptr, len, USB_DT_DEVICE, USB_DT_DEVICE_SIZE)) 107dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 108dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project dev = (void*) ptr; 109dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project len -= dev->bLength; 110dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ptr += dev->bLength; 111dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 112dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(check(ptr, len, USB_DT_CONFIG, USB_DT_CONFIG_SIZE)) 113dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 114dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project cfg = (void*) ptr; 115dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project len -= cfg->bLength; 116dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ptr += cfg->bLength; 117dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 118dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project info.dev_vendor = dev->idVendor; 119dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project info.dev_product = dev->idProduct; 120dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project info.dev_class = dev->bDeviceClass; 121dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project info.dev_subclass = dev->bDeviceSubClass; 122dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project info.dev_protocol = dev->bDeviceProtocol; 123b4add9b74525210478bac702d27fdaf9cf7ab18fElliott Hughes info.writable = writable; 124b4add9b74525210478bac702d27fdaf9cf7ab18fElliott Hughes 125dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project // read device serial number (if there is one) 126dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project info.serial_number[0] = 0; 127dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (dev->iSerialNumber) { 128dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct usbdevfs_ctrltransfer ctrl; 129dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project __u16 buffer[128]; 130dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int result; 131dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 132dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project memset(buffer, 0, sizeof(buffer)); 133dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 134dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ctrl.bRequestType = USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_DEVICE; 135dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ctrl.bRequest = USB_REQ_GET_DESCRIPTOR; 136dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ctrl.wValue = (USB_DT_STRING << 8) | dev->iSerialNumber; 137dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ctrl.wIndex = 0; 138dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ctrl.wLength = sizeof(buffer); 139dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ctrl.data = buffer; 140dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 141dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project result = ioctl(fd, USBDEVFS_CONTROL, &ctrl); 142dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (result > 0) { 143dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int i; 144dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project // skip first word, and copy the rest to the serial string, changing shorts to bytes. 145dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project result /= 2; 146dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project for (i = 1; i < result; i++) 147dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project info.serial_number[i - 1] = buffer[i]; 148dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project info.serial_number[i - 1] = 0; 149dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 150dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 151dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 152dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project for(i = 0; i < cfg->bNumInterfaces; i++) { 153dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(check(ptr, len, USB_DT_INTERFACE, USB_DT_INTERFACE_SIZE)) 154dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 155dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc = (void*) ptr; 156dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project len -= ifc->bLength; 157dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ptr += ifc->bLength; 158dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 159dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project in = -1; 160dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project out = -1; 161dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project info.ifc_class = ifc->bInterfaceClass; 162dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project info.ifc_subclass = ifc->bInterfaceSubClass; 163dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project info.ifc_protocol = ifc->bInterfaceProtocol; 164dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 165dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project for(e = 0; e < ifc->bNumEndpoints; e++) { 166dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(check(ptr, len, USB_DT_ENDPOINT, USB_DT_ENDPOINT_SIZE)) 167dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 168dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ept = (void*) ptr; 169dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project len -= ept->bLength; 170dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ptr += ept->bLength; 171dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 172dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if((ept->bmAttributes & 0x03) != 0x02) 173dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project continue; 174dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 175dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(ept->bEndpointAddress & 0x80) { 176dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project in = ept->bEndpointAddress; 177dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 178dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project out = ept->bEndpointAddress; 179dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 180dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 181dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 182dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project info.has_bulk_in = (in != -1); 183dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project info.has_bulk_out = (out != -1); 184dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 185dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(callback(&info) == 0) { 186dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project *ept_in_id = in; 187dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project *ept_out_id = out; 188dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project *ifc_id = ifc->bInterfaceNumber; 189dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 190dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 191dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 192dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 193dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 194dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 195dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 196dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic usb_handle *find_usb_device(const char *base, ifc_match_func callback) 197dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 198dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project usb_handle *usb = 0; 199dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char busname[64], devname[64]; 200dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char desc[1024]; 201dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int n, in, out, ifc; 202dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 203dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project DIR *busdir, *devdir; 204dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct dirent *de; 205dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int fd; 206c500be926cf07c43aeb828ae86b04b856c6b7c63Elliott Hughes int writable; 207dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 208dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project busdir = opendir(base); 209dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(busdir == 0) return 0; 210dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 211dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while((de = readdir(busdir)) && (usb == 0)) { 212dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(badname(de->d_name)) continue; 213dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 214dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sprintf(busname, "%s/%s", base, de->d_name); 215dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project devdir = opendir(busname); 216dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(devdir == 0) continue; 217dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 218dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project// DBG("[ scanning %s ]\n", busname); 219dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while((de = readdir(devdir)) && (usb == 0)) { 220dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 221dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(badname(de->d_name)) continue; 222dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sprintf(devname, "%s/%s", busname, de->d_name); 223dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 224dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project// DBG("[ scanning %s ]\n", devname); 225c500be926cf07c43aeb828ae86b04b856c6b7c63Elliott Hughes writable = 1; 226dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if((fd = open(devname, O_RDWR)) < 0) { 227b4add9b74525210478bac702d27fdaf9cf7ab18fElliott Hughes // Check if we have read-only access, so we can give a helpful 228b4add9b74525210478bac702d27fdaf9cf7ab18fElliott Hughes // diagnostic like "adb devices" does. 229b4add9b74525210478bac702d27fdaf9cf7ab18fElliott Hughes writable = 0; 230b4add9b74525210478bac702d27fdaf9cf7ab18fElliott Hughes if((fd = open(devname, O_RDONLY)) < 0) { 231b4add9b74525210478bac702d27fdaf9cf7ab18fElliott Hughes continue; 232b4add9b74525210478bac702d27fdaf9cf7ab18fElliott Hughes } 233dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 234dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 235dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project n = read(fd, desc, sizeof(desc)); 236dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 237b4add9b74525210478bac702d27fdaf9cf7ab18fElliott Hughes if(filter_usb_device(fd, desc, n, writable, callback, 238b4add9b74525210478bac702d27fdaf9cf7ab18fElliott Hughes &in, &out, &ifc) == 0) { 239dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project usb = calloc(1, sizeof(usb_handle)); 240dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project strcpy(usb->fname, devname); 241dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project usb->ep_in = in; 242dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project usb->ep_out = out; 243dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project usb->desc = fd; 244dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 245dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project n = ioctl(fd, USBDEVFS_CLAIMINTERFACE, &ifc); 246dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(n != 0) { 247dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project close(fd); 248dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project free(usb); 249dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project usb = 0; 250dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project continue; 251dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 252dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 253dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project close(fd); 254dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 255dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 256dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project closedir(devdir); 257dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 258dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project closedir(busdir); 259dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 260dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return usb; 261dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 262dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 263dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint usb_write(usb_handle *h, const void *_data, int len) 264dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 265dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unsigned char *data = (unsigned char*) _data; 266dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unsigned count = 0; 267dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct usbdevfs_bulktransfer bulk; 268dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int n; 269dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 270dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(h->ep_out == 0) { 271dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 272dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 273dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 274dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(len == 0) { 275dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project bulk.ep = h->ep_out; 276dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project bulk.len = 0; 277dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project bulk.data = data; 278dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project bulk.timeout = 0; 279dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 280dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project n = ioctl(h->desc, USBDEVFS_BULK, &bulk); 281dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(n != 0) { 282dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fprintf(stderr,"ERROR: n = %d, errno = %d (%s)\n", 283dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project n, errno, strerror(errno)); 284dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 285dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 286dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 287dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 288dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 289dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while(len > 0) { 290dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int xfer; 291dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project xfer = (len > 4096) ? 4096 : len; 292dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 293dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project bulk.ep = h->ep_out; 294dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project bulk.len = xfer; 295dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project bulk.data = data; 296dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project bulk.timeout = 0; 297dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 298dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project n = ioctl(h->desc, USBDEVFS_BULK, &bulk); 299dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(n != xfer) { 300dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project DBG("ERROR: n = %d, errno = %d (%s)\n", 301dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project n, errno, strerror(errno)); 302dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 303dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 304dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 305dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project count += xfer; 306dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project len -= xfer; 307dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project data += xfer; 308dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 309dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 310dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return count; 311dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 312dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 313dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint usb_read(usb_handle *h, void *_data, int len) 314dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 315dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unsigned char *data = (unsigned char*) _data; 316dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unsigned count = 0; 317dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct usbdevfs_bulktransfer bulk; 318b2de4db941f5329f9f19e70feff5786b2d5acbb6Dan Murphy int n, retry; 319dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 320dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(h->ep_in == 0) { 321dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 322dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 323dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 324dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while(len > 0) { 325dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int xfer = (len > 4096) ? 4096 : len; 326dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 327dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project bulk.ep = h->ep_in; 328dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project bulk.len = xfer; 329dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project bulk.data = data; 330dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project bulk.timeout = 0; 331b2de4db941f5329f9f19e70feff5786b2d5acbb6Dan Murphy retry = 0; 332b2de4db941f5329f9f19e70feff5786b2d5acbb6Dan Murphy 333b2de4db941f5329f9f19e70feff5786b2d5acbb6Dan Murphy do{ 334b2de4db941f5329f9f19e70feff5786b2d5acbb6Dan Murphy DBG("[ usb read %d fd = %d], fname=%s\n", xfer, h->desc, h->fname); 335b2de4db941f5329f9f19e70feff5786b2d5acbb6Dan Murphy n = ioctl(h->desc, USBDEVFS_BULK, &bulk); 336b2de4db941f5329f9f19e70feff5786b2d5acbb6Dan Murphy DBG("[ usb read %d ] = %d, fname=%s, Retry %d \n", xfer, n, h->fname, retry); 337b2de4db941f5329f9f19e70feff5786b2d5acbb6Dan Murphy 338b2de4db941f5329f9f19e70feff5786b2d5acbb6Dan Murphy if( n < 0 ) { 339b2de4db941f5329f9f19e70feff5786b2d5acbb6Dan Murphy DBG1("ERROR: n = %d, errno = %d (%s)\n",n, errno, strerror(errno)); 340b2de4db941f5329f9f19e70feff5786b2d5acbb6Dan Murphy if ( ++retry > MAX_RETRIES ) return -1; 341b2de4db941f5329f9f19e70feff5786b2d5acbb6Dan Murphy sleep( 1 ); 342b2de4db941f5329f9f19e70feff5786b2d5acbb6Dan Murphy } 343dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 344b2de4db941f5329f9f19e70feff5786b2d5acbb6Dan Murphy while( n < 0 ); 345dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 346dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project count += n; 347dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project len -= n; 348dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project data += n; 349dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 350dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(n < xfer) { 351dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project break; 352dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 353dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 354dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 355dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return count; 356dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 357dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 358dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid usb_kick(usb_handle *h) 359dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 360dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int fd; 361dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 362dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fd = h->desc; 363dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project h->desc = -1; 364dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(fd >= 0) { 365dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project close(fd); 366dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project DBG("[ usb closed %d ]\n", fd); 367dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 368dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 369dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 370dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint usb_close(usb_handle *h) 371dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 372dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int fd; 373dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 374dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fd = h->desc; 375dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project h->desc = -1; 376dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(fd >= 0) { 377dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project close(fd); 378dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project DBG("[ usb closed %d ]\n", fd); 379dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 380dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 381dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 382dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 383dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 384dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectusb_handle *usb_open(ifc_match_func callback) 385dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 386dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return find_usb_device("/dev/bus/usb", callback); 387dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 388