usb_linux_client.c revision dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0
19066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/* 29066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Copyright (C) 2007 The Android Open Source Project 39066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 49066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 59066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * you may not use this file except in compliance with the License. 69066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * You may obtain a copy of the License at 79066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 89066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 99066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * See the License for the specific language governing permissions and 149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * limitations under the License. 159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include <stdio.h> 189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include <stdlib.h> 199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include <unistd.h> 209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include <string.h> 219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include <sys/ioctl.h> 239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include <sys/types.h> 249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include <dirent.h> 259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include <errno.h> 269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include "sysdeps.h" 289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#define TRACE_TAG TRACE_USB 309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include "adb.h" 319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectstruct usb_handle 349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project{ 359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int fd; 369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project adb_cond_t notify; 379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project adb_mutex_t lock; 389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project}; 399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectvoid usb_cleanup() 419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project{ 429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // nothing to do here 439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectstatic void *usb_open_thread(void *x) 469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project{ 479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project struct usb_handle *usb = (struct usb_handle *)x; 489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int fd; 499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project while (1) { 519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // wait until the USB device needs opening 529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project adb_mutex_lock(&usb->lock); 539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project while (usb->fd != -1) 549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project adb_cond_wait(&usb->notify, &usb->lock); 559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project adb_mutex_unlock(&usb->lock); 569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project D("[ usb_thread - opening device ]\n"); 589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project do { 599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* XXX use inotify? */ 609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fd = unix_open("/dev/android_adb", O_RDWR); 619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (fd < 0) { 629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // to support older kernels 639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fd = unix_open("/dev/android", O_RDWR); 649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (fd < 0) { 669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project adb_sleep_ms(1000); 679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } while (fd < 0); 699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project D("[ opening device succeeded ]\n"); 709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project close_on_exec(fd); 729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project usb->fd = fd; 739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project D("[ usb_thread - registering device ]\n"); 759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project register_usb_transport(usb, 0); 769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // never gets here 799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectint usb_write(usb_handle *h, const void *data, int len) 839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project{ 849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int n; 859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project D("[ write %d ]\n", len); 879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project n = adb_write(h->fd, data, len); 889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if(n != len) { 899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project D("ERROR: n = %d, errno = %d (%s)\n", 909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project n, errno, strerror(errno)); 919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return -1; 929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project D("[ done ]\n"); 949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectint usb_read(usb_handle *h, void *data, int len) 989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project{ 999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int n; 1009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project D("[ read %d ]\n", len); 1029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project n = adb_read(h->fd, data, len); 1039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if(n != len) { 1049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project D("ERROR: n = %d, errno = %d (%s)\n", 1059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project n, errno, strerror(errno)); 1069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return -1; 1079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 1099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 1109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectvoid usb_init() 1129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project{ 1139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project usb_handle *h; 1149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project adb_thread_t tid; 1159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int fd; 1169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project h = calloc(1, sizeof(usb_handle)); 1189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project h->fd = -1; 1199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project adb_cond_init(&h->notify, 0); 1209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project adb_mutex_init(&h->lock, 0); 1219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Open the file /dev/android_adb_enable to trigger 1239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // the enabling of the adb USB function in the kernel. 1249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // We never touch this file again - just leave it open 1259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // indefinitely so the kernel will know when we are running 1269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // and when we are not. 1279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fd = unix_open("/dev/android_adb_enable", O_RDWR); 1289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (fd < 0) { 1299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project D("failed to open /dev/android_adb_enable\n"); 1309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 1319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project close_on_exec(fd); 1329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project D("[ usb_init - starting thread ]\n"); 1359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if(adb_thread_create(&tid, usb_open_thread, h)){ 1369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fatal_errno("cannot create usb thread"); 1379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 1399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectvoid usb_kick(usb_handle *h) 1419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project{ 1429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project D("usb_kick\n"); 1439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project adb_mutex_lock(&h->lock); 1449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project adb_close(h->fd); 1459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project h->fd = -1; 1469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // notify usb_open_thread that we are disconnected 1481473f46cbc82aa6f0ba744cc896a36923823d55bMathias Agopian adb_cond_signal(&h->notify); 1499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project adb_mutex_unlock(&h->lock); 1509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 1519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectint usb_close(usb_handle *h) 1539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project{ 1549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // nothing to do here 1559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 1569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 1579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project