The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2007 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
Dan Albert | 3313426 | 2015-03-19 15:21:08 -0700 | [diff] [blame] | 17 | #define TRACE_TAG TRACE_USB |
| 18 | |
| 19 | #include "sysdeps.h" |
| 20 | |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 21 | #include <ctype.h> |
Dan Albert | 7664901 | 2015-02-24 15:51:19 -0800 | [diff] [blame] | 22 | #include <dirent.h> |
| 23 | #include <errno.h> |
| 24 | #include <fcntl.h> |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 25 | #include <linux/usb/ch9.h> |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 26 | #include <linux/usbdevice_fs.h> |
| 27 | #include <linux/version.h> |
Dan Albert | 7664901 | 2015-02-24 15:51:19 -0800 | [diff] [blame] | 28 | #include <stdio.h> |
| 29 | #include <stdlib.h> |
| 30 | #include <string.h> |
| 31 | #include <sys/ioctl.h> |
| 32 | #include <sys/time.h> |
| 33 | #include <sys/types.h> |
| 34 | #include <unistd.h> |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 35 | |
| 36 | #include <chrono> |
| 37 | #include <condition_variable> |
| 38 | #include <list> |
| 39 | #include <mutex> |
| 40 | #include <string> |
Elliott Hughes | 9309ecb | 2015-04-27 14:20:17 -0700 | [diff] [blame] | 41 | |
| 42 | #include <base/file.h> |
| 43 | #include <base/stringprintf.h> |
| 44 | #include <base/strings.h> |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 45 | |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 46 | #include "adb.h" |
Dan Albert | 7664901 | 2015-02-24 15:51:19 -0800 | [diff] [blame] | 47 | #include "transport.h" |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 48 | |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 49 | using namespace std::literals; |
| 50 | |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 51 | /* usb scan debugging is waaaay too verbose */ |
| 52 | #define DBGX(x...) |
| 53 | |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 54 | struct usb_handle { |
| 55 | ~usb_handle() { |
| 56 | if (fd != -1) unix_close(fd); |
| 57 | } |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 58 | |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 59 | std::string path; |
| 60 | int fd = -1; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 61 | unsigned char ep_in; |
| 62 | unsigned char ep_out; |
| 63 | |
| 64 | unsigned zero_mask; |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 65 | unsigned writeable = 1; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 66 | |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 67 | usbdevfs_urb urb_in; |
| 68 | usbdevfs_urb urb_out; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 69 | |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 70 | bool urb_in_busy = false; |
| 71 | bool urb_out_busy = false; |
| 72 | bool dead = false; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 73 | |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 74 | std::condition_variable cv; |
| 75 | std::mutex mutex; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 76 | |
| 77 | // for garbage collecting disconnected devices |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 78 | bool mark; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 79 | |
| 80 | // ID of thread currently in REAPURB |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 81 | pthread_t reaper_thread = 0; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 82 | }; |
| 83 | |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 84 | static std::mutex g_usb_handles_mutex; |
| 85 | static std::list<usb_handle*> g_usb_handles; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 86 | |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 87 | static int is_known_device(const char* dev_name) { |
| 88 | std::lock_guard<std::mutex> lock(g_usb_handles_mutex); |
| 89 | for (usb_handle* usb : g_usb_handles) { |
| 90 | if (usb->path == dev_name) { |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 91 | // set mark flag to indicate this device is still alive |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 92 | usb->mark = true; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 93 | return 1; |
| 94 | } |
| 95 | } |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 96 | return 0; |
| 97 | } |
| 98 | |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 99 | static void kick_disconnected_devices() { |
| 100 | std::lock_guard<std::mutex> lock(g_usb_handles_mutex); |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 101 | // kick any devices in the device list that were not found in the device scan |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 102 | for (usb_handle* usb : g_usb_handles) { |
| 103 | if (!usb->mark) { |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 104 | usb_kick(usb); |
| 105 | } else { |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 106 | usb->mark = false; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 107 | } |
| 108 | } |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 109 | } |
| 110 | |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 111 | static inline bool contains_non_digit(const char* name) { |
| 112 | while (*name) { |
| 113 | if (!isdigit(*name++)) return true; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 114 | } |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 115 | return false; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 116 | } |
| 117 | |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 118 | static void find_usb_device(const std::string& base, |
Mike Lockwood | 0927bf9 | 2009-08-08 12:37:44 -0400 | [diff] [blame] | 119 | void (*register_device_callback) |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 120 | (const char*, const char*, unsigned char, unsigned char, int, int, unsigned)) |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 121 | { |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 122 | std::unique_ptr<DIR, int(*)(DIR*)> bus_dir(opendir(base.c_str()), closedir); |
| 123 | if (!bus_dir) return; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 124 | |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 125 | dirent* de; |
| 126 | while ((de = readdir(bus_dir.get())) != 0) { |
| 127 | if (contains_non_digit(de->d_name)) continue; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 128 | |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 129 | std::string bus_name = base + "/" + de->d_name; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 130 | |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 131 | std::unique_ptr<DIR, int(*)(DIR*)> dev_dir(opendir(bus_name.c_str()), closedir); |
| 132 | if (!dev_dir) continue; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 133 | |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 134 | while ((de = readdir(dev_dir.get()))) { |
Mike Lockwood | b596608 | 2011-01-07 23:18:14 -0500 | [diff] [blame] | 135 | unsigned char devdesc[4096]; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 136 | unsigned char* bufptr = devdesc; |
Mike Lockwood | 07e8f7e | 2010-01-17 00:52:27 -0500 | [diff] [blame] | 137 | unsigned char* bufend; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 138 | struct usb_device_descriptor* device; |
| 139 | struct usb_config_descriptor* config; |
| 140 | struct usb_interface_descriptor* interface; |
| 141 | struct usb_endpoint_descriptor *ep1, *ep2; |
| 142 | unsigned zero_mask = 0; |
| 143 | unsigned vid, pid; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 144 | |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 145 | if (contains_non_digit(de->d_name)) continue; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 146 | |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 147 | std::string dev_name = bus_name + "/" + de->d_name; |
| 148 | if (is_known_device(dev_name.c_str())) { |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 149 | continue; |
| 150 | } |
| 151 | |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 152 | int fd = unix_open(dev_name.c_str(), O_RDONLY | O_CLOEXEC); |
| 153 | if (fd == -1) { |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 154 | continue; |
| 155 | } |
| 156 | |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 157 | size_t desclength = unix_read(fd, devdesc, sizeof(devdesc)); |
Mike Lockwood | 07e8f7e | 2010-01-17 00:52:27 -0500 | [diff] [blame] | 158 | bufend = bufptr + desclength; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 159 | |
| 160 | // should have device and configuration descriptors, and atleast two endpoints |
| 161 | if (desclength < USB_DT_DEVICE_SIZE + USB_DT_CONFIG_SIZE) { |
Elliott Hughes | ccecf14 | 2014-01-16 10:53:11 -0800 | [diff] [blame] | 162 | D("desclength %zu is too small\n", desclength); |
Spencer Low | 6ac5d7d | 2015-05-22 20:09:06 -0700 | [diff] [blame] | 163 | unix_close(fd); |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 164 | continue; |
| 165 | } |
| 166 | |
| 167 | device = (struct usb_device_descriptor*)bufptr; |
| 168 | bufptr += USB_DT_DEVICE_SIZE; |
| 169 | |
| 170 | if((device->bLength != USB_DT_DEVICE_SIZE) || (device->bDescriptorType != USB_DT_DEVICE)) { |
Spencer Low | 6ac5d7d | 2015-05-22 20:09:06 -0700 | [diff] [blame] | 171 | unix_close(fd); |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 172 | continue; |
| 173 | } |
| 174 | |
Marcus Comstedt | 6f703a2 | 2010-09-22 20:09:44 +0200 | [diff] [blame] | 175 | vid = device->idVendor; |
| 176 | pid = device->idProduct; |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 177 | DBGX("[ %s is V:%04x P:%04x ]\n", dev_name.c_str(), vid, pid); |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 178 | |
| 179 | // should have config descriptor next |
| 180 | config = (struct usb_config_descriptor *)bufptr; |
| 181 | bufptr += USB_DT_CONFIG_SIZE; |
| 182 | if (config->bLength != USB_DT_CONFIG_SIZE || config->bDescriptorType != USB_DT_CONFIG) { |
| 183 | D("usb_config_descriptor not found\n"); |
Spencer Low | 6ac5d7d | 2015-05-22 20:09:06 -0700 | [diff] [blame] | 184 | unix_close(fd); |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 185 | continue; |
| 186 | } |
| 187 | |
Mike Lockwood | 07e8f7e | 2010-01-17 00:52:27 -0500 | [diff] [blame] | 188 | // loop through all the descriptors and look for the ADB interface |
| 189 | while (bufptr < bufend) { |
| 190 | unsigned char length = bufptr[0]; |
| 191 | unsigned char type = bufptr[1]; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 192 | |
Mike Lockwood | 07e8f7e | 2010-01-17 00:52:27 -0500 | [diff] [blame] | 193 | if (type == USB_DT_INTERFACE) { |
| 194 | interface = (struct usb_interface_descriptor *)bufptr; |
| 195 | bufptr += length; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 196 | |
Mike Lockwood | 07e8f7e | 2010-01-17 00:52:27 -0500 | [diff] [blame] | 197 | if (length != USB_DT_INTERFACE_SIZE) { |
| 198 | D("interface descriptor has wrong size\n"); |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 199 | break; |
| 200 | } |
| 201 | |
Mike Lockwood | 07e8f7e | 2010-01-17 00:52:27 -0500 | [diff] [blame] | 202 | DBGX("bInterfaceClass: %d, bInterfaceSubClass: %d," |
| 203 | "bInterfaceProtocol: %d, bNumEndpoints: %d\n", |
| 204 | interface->bInterfaceClass, interface->bInterfaceSubClass, |
| 205 | interface->bInterfaceProtocol, interface->bNumEndpoints); |
| 206 | |
| 207 | if (interface->bNumEndpoints == 2 && |
| 208 | is_adb_interface(vid, pid, interface->bInterfaceClass, |
| 209 | interface->bInterfaceSubClass, interface->bInterfaceProtocol)) { |
| 210 | |
Scott Anderson | e109d26 | 2012-04-20 11:21:14 -0700 | [diff] [blame] | 211 | struct stat st; |
| 212 | char pathbuf[128]; |
| 213 | char link[256]; |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 214 | char *devpath = nullptr; |
Scott Anderson | e109d26 | 2012-04-20 11:21:14 -0700 | [diff] [blame] | 215 | |
Mike Lockwood | 07e8f7e | 2010-01-17 00:52:27 -0500 | [diff] [blame] | 216 | DBGX("looking for bulk endpoints\n"); |
| 217 | // looks like ADB... |
| 218 | ep1 = (struct usb_endpoint_descriptor *)bufptr; |
| 219 | bufptr += USB_DT_ENDPOINT_SIZE; |
Ingo Rohloff | 58b01e0 | 2014-05-16 21:51:41 +0200 | [diff] [blame] | 220 | // For USB 3.0 SuperSpeed devices, skip potential |
| 221 | // USB 3.0 SuperSpeed Endpoint Companion descriptor |
| 222 | if (bufptr+2 <= devdesc + desclength && |
| 223 | bufptr[0] == USB_DT_SS_EP_COMP_SIZE && |
| 224 | bufptr[1] == USB_DT_SS_ENDPOINT_COMP) { |
| 225 | bufptr += USB_DT_SS_EP_COMP_SIZE; |
| 226 | } |
Mike Lockwood | 07e8f7e | 2010-01-17 00:52:27 -0500 | [diff] [blame] | 227 | ep2 = (struct usb_endpoint_descriptor *)bufptr; |
| 228 | bufptr += USB_DT_ENDPOINT_SIZE; |
Ingo Rohloff | 58b01e0 | 2014-05-16 21:51:41 +0200 | [diff] [blame] | 229 | if (bufptr+2 <= devdesc + desclength && |
| 230 | bufptr[0] == USB_DT_SS_EP_COMP_SIZE && |
| 231 | bufptr[1] == USB_DT_SS_ENDPOINT_COMP) { |
| 232 | bufptr += USB_DT_SS_EP_COMP_SIZE; |
| 233 | } |
Mike Lockwood | 07e8f7e | 2010-01-17 00:52:27 -0500 | [diff] [blame] | 234 | |
| 235 | if (bufptr > devdesc + desclength || |
| 236 | ep1->bLength != USB_DT_ENDPOINT_SIZE || |
| 237 | ep1->bDescriptorType != USB_DT_ENDPOINT || |
| 238 | ep2->bLength != USB_DT_ENDPOINT_SIZE || |
| 239 | ep2->bDescriptorType != USB_DT_ENDPOINT) { |
| 240 | D("endpoints not found\n"); |
| 241 | break; |
| 242 | } |
| 243 | |
| 244 | // both endpoints should be bulk |
| 245 | if (ep1->bmAttributes != USB_ENDPOINT_XFER_BULK || |
| 246 | ep2->bmAttributes != USB_ENDPOINT_XFER_BULK) { |
| 247 | D("bulk endpoints not found\n"); |
| 248 | continue; |
| 249 | } |
| 250 | /* aproto 01 needs 0 termination */ |
| 251 | if(interface->bInterfaceProtocol == 0x01) { |
| 252 | zero_mask = ep1->wMaxPacketSize - 1; |
| 253 | } |
| 254 | |
| 255 | // we have a match. now we just need to figure out which is in and which is out. |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 256 | unsigned char local_ep_in, local_ep_out; |
Mike Lockwood | 07e8f7e | 2010-01-17 00:52:27 -0500 | [diff] [blame] | 257 | if (ep1->bEndpointAddress & USB_ENDPOINT_DIR_MASK) { |
| 258 | local_ep_in = ep1->bEndpointAddress; |
| 259 | local_ep_out = ep2->bEndpointAddress; |
| 260 | } else { |
| 261 | local_ep_in = ep2->bEndpointAddress; |
| 262 | local_ep_out = ep1->bEndpointAddress; |
| 263 | } |
| 264 | |
Scott Anderson | e109d26 | 2012-04-20 11:21:14 -0700 | [diff] [blame] | 265 | // Determine the device path |
| 266 | if (!fstat(fd, &st) && S_ISCHR(st.st_mode)) { |
| 267 | char *slash; |
| 268 | ssize_t link_len; |
| 269 | snprintf(pathbuf, sizeof(pathbuf), "/sys/dev/char/%d:%d", |
| 270 | major(st.st_rdev), minor(st.st_rdev)); |
| 271 | link_len = readlink(pathbuf, link, sizeof(link) - 1); |
| 272 | if (link_len > 0) { |
| 273 | link[link_len] = '\0'; |
| 274 | slash = strrchr(link, '/'); |
| 275 | if (slash) { |
| 276 | snprintf(pathbuf, sizeof(pathbuf), |
| 277 | "usb:%s", slash + 1); |
| 278 | devpath = pathbuf; |
| 279 | } |
| 280 | } |
| 281 | } |
| 282 | |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 283 | register_device_callback(dev_name.c_str(), devpath, |
Scott Anderson | e109d26 | 2012-04-20 11:21:14 -0700 | [diff] [blame] | 284 | local_ep_in, local_ep_out, |
Mike Lockwood | 07e8f7e | 2010-01-17 00:52:27 -0500 | [diff] [blame] | 285 | interface->bInterfaceNumber, device->iSerialNumber, zero_mask); |
| 286 | break; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 287 | } |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 288 | } else { |
Mike Lockwood | 07e8f7e | 2010-01-17 00:52:27 -0500 | [diff] [blame] | 289 | bufptr += length; |
| 290 | } |
| 291 | } // end of while |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 292 | |
Spencer Low | 6ac5d7d | 2015-05-22 20:09:06 -0700 | [diff] [blame] | 293 | unix_close(fd); |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 294 | } |
| 295 | } |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 296 | } |
| 297 | |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 298 | static int usb_bulk_write(usb_handle* h, const void* data, int len) { |
| 299 | std::unique_lock<std::mutex> lock(h->mutex); |
| 300 | D("++ usb_bulk_write ++\n"); |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 301 | |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 302 | usbdevfs_urb* urb = &h->urb_out; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 303 | memset(urb, 0, sizeof(*urb)); |
| 304 | urb->type = USBDEVFS_URB_TYPE_BULK; |
| 305 | urb->endpoint = h->ep_out; |
| 306 | urb->status = -1; |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 307 | urb->buffer = const_cast<void*>(data); |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 308 | urb->buffer_length = len; |
| 309 | |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 310 | if (h->dead) { |
| 311 | errno = EINVAL; |
| 312 | return -1; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 313 | } |
| 314 | |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 315 | if (TEMP_FAILURE_RETRY(ioctl(h->fd, USBDEVFS_SUBMITURB, urb)) == -1) { |
| 316 | return -1; |
| 317 | } |
| 318 | |
| 319 | h->urb_out_busy = true; |
| 320 | while (true) { |
| 321 | auto now = std::chrono::system_clock::now(); |
| 322 | if (h->cv.wait_until(lock, now + 5s) == std::cv_status::timeout || h->dead) { |
| 323 | // TODO: call USBDEVFS_DISCARDURB? |
| 324 | errno = ETIMEDOUT; |
| 325 | return -1; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 326 | } |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 327 | if (!h->urb_out_busy) { |
| 328 | if (urb->status != 0) { |
| 329 | errno = -urb->status; |
| 330 | return -1; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 331 | } |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 332 | return urb->actual_length; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 333 | } |
| 334 | } |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 335 | } |
| 336 | |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 337 | static int usb_bulk_read(usb_handle* h, void* data, int len) { |
| 338 | std::unique_lock<std::mutex> lock(h->mutex); |
Nanik Tolaram | b627a0e | 2015-02-18 22:53:37 +1100 | [diff] [blame] | 339 | D("++ usb_bulk_read ++\n"); |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 340 | |
| 341 | usbdevfs_urb* urb = &h->urb_in; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 342 | memset(urb, 0, sizeof(*urb)); |
| 343 | urb->type = USBDEVFS_URB_TYPE_BULK; |
| 344 | urb->endpoint = h->ep_in; |
| 345 | urb->status = -1; |
| 346 | urb->buffer = data; |
| 347 | urb->buffer_length = len; |
| 348 | |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 349 | if (h->dead) { |
| 350 | errno = EINVAL; |
| 351 | return -1; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 352 | } |
| 353 | |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 354 | if (TEMP_FAILURE_RETRY(ioctl(h->fd, USBDEVFS_SUBMITURB, urb)) == -1) { |
| 355 | return -1; |
| 356 | } |
| 357 | |
| 358 | h->urb_in_busy = true; |
| 359 | while (true) { |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 360 | D("[ reap urb - wait ]\n"); |
| 361 | h->reaper_thread = pthread_self(); |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 362 | int fd = h->fd; |
| 363 | lock.unlock(); |
| 364 | |
| 365 | // This ioctl must not have TEMP_FAILURE_RETRY because we send SIGALRM to break out. |
| 366 | usbdevfs_urb* out = nullptr; |
| 367 | int res = ioctl(fd, USBDEVFS_REAPURB, &out); |
JP Abgrall | 408fa57 | 2011-03-16 15:57:42 -0700 | [diff] [blame] | 368 | int saved_errno = errno; |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 369 | |
| 370 | lock.lock(); |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 371 | h->reaper_thread = 0; |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 372 | if (h->dead) { |
| 373 | errno = EINVAL; |
| 374 | return -1; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 375 | } |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 376 | if (res < 0) { |
| 377 | if (saved_errno == EINTR) { |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 378 | continue; |
| 379 | } |
| 380 | D("[ reap urb - error ]\n"); |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 381 | errno = saved_errno; |
| 382 | return -1; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 383 | } |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 384 | D("[ urb @%p status = %d, actual = %d ]\n", out, out->status, out->actual_length); |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 385 | |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 386 | if (out == &h->urb_in) { |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 387 | D("[ reap urb - IN complete ]\n"); |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 388 | h->urb_in_busy = false; |
| 389 | if (urb->status != 0) { |
| 390 | errno = -urb->status; |
| 391 | return -1; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 392 | } |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 393 | return urb->actual_length; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 394 | } |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 395 | if (out == &h->urb_out) { |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 396 | D("[ reap urb - OUT compelete ]\n"); |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 397 | h->urb_out_busy = false; |
| 398 | h->cv.notify_all(); |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 399 | } |
| 400 | } |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 401 | } |
| 402 | |
| 403 | |
| 404 | int usb_write(usb_handle *h, const void *_data, int len) |
| 405 | { |
Nanik Tolaram | b627a0e | 2015-02-18 22:53:37 +1100 | [diff] [blame] | 406 | D("++ usb_write ++\n"); |
Tamas Berghammer | 3d2904c | 2015-07-13 19:12:28 +0100 | [diff] [blame] | 407 | |
| 408 | unsigned char *data = (unsigned char*) _data; |
| 409 | int n = usb_bulk_write(h, data, len); |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 410 | if (n != len) { |
| 411 | D("ERROR: n = %d, errno = %d (%s)\n", n, errno, strerror(errno)); |
Tamas Berghammer | 3d2904c | 2015-07-13 19:12:28 +0100 | [diff] [blame] | 412 | return -1; |
| 413 | } |
| 414 | |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 415 | if (h->zero_mask && !(len & h->zero_mask)) { |
| 416 | // If we need 0-markers and our transfer is an even multiple of the packet size, |
| 417 | // then send a zero marker. |
| 418 | return usb_bulk_write(h, _data, 0); |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 419 | } |
| 420 | |
Nanik Tolaram | b627a0e | 2015-02-18 22:53:37 +1100 | [diff] [blame] | 421 | D("-- usb_write --\n"); |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 422 | return 0; |
| 423 | } |
| 424 | |
| 425 | int usb_read(usb_handle *h, void *_data, int len) |
| 426 | { |
| 427 | unsigned char *data = (unsigned char*) _data; |
| 428 | int n; |
| 429 | |
| 430 | D("++ usb_read ++\n"); |
| 431 | while(len > 0) { |
Tamas Berghammer | 3d2904c | 2015-07-13 19:12:28 +0100 | [diff] [blame] | 432 | int xfer = len; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 433 | |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 434 | D("[ usb read %d fd = %d], path=%s\n", xfer, h->fd, h->path.c_str()); |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 435 | n = usb_bulk_read(h, data, xfer); |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 436 | D("[ usb read %d ] = %d, path=%s\n", xfer, n, h->path.c_str()); |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 437 | if(n != xfer) { |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 438 | if((errno == ETIMEDOUT) && (h->fd != -1)) { |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 439 | D("[ timeout ]\n"); |
| 440 | if(n > 0){ |
| 441 | data += n; |
| 442 | len -= n; |
| 443 | } |
| 444 | continue; |
| 445 | } |
| 446 | D("ERROR: n = %d, errno = %d (%s)\n", |
| 447 | n, errno, strerror(errno)); |
| 448 | return -1; |
| 449 | } |
| 450 | |
| 451 | len -= xfer; |
| 452 | data += xfer; |
| 453 | } |
| 454 | |
| 455 | D("-- usb_read --\n"); |
| 456 | return 0; |
| 457 | } |
| 458 | |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 459 | void usb_kick(usb_handle* h) { |
| 460 | std::lock_guard<std::mutex> lock(h->mutex); |
| 461 | D("[ kicking %p (fd = %d) ]\n", h, h->fd); |
| 462 | if (!h->dead) { |
| 463 | h->dead = true; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 464 | |
Mike Lockwood | 0927bf9 | 2009-08-08 12:37:44 -0400 | [diff] [blame] | 465 | if (h->writeable) { |
| 466 | /* HACK ALERT! |
| 467 | ** Sometimes we get stuck in ioctl(USBDEVFS_REAPURB). |
| 468 | ** This is a workaround for that problem. |
| 469 | */ |
| 470 | if (h->reaper_thread) { |
| 471 | pthread_kill(h->reaper_thread, SIGALRM); |
| 472 | } |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 473 | |
Mike Lockwood | 0927bf9 | 2009-08-08 12:37:44 -0400 | [diff] [blame] | 474 | /* cancel any pending transactions |
| 475 | ** these will quietly fail if the txns are not active, |
| 476 | ** but this ensures that a reader blocked on REAPURB |
| 477 | ** will get unblocked |
| 478 | */ |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 479 | ioctl(h->fd, USBDEVFS_DISCARDURB, &h->urb_in); |
| 480 | ioctl(h->fd, USBDEVFS_DISCARDURB, &h->urb_out); |
Mike Lockwood | 0927bf9 | 2009-08-08 12:37:44 -0400 | [diff] [blame] | 481 | h->urb_in.status = -ENODEV; |
| 482 | h->urb_out.status = -ENODEV; |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 483 | h->urb_in_busy = false; |
| 484 | h->urb_out_busy = false; |
| 485 | h->cv.notify_all(); |
Mike Lockwood | 0927bf9 | 2009-08-08 12:37:44 -0400 | [diff] [blame] | 486 | } else { |
| 487 | unregister_usb_transport(h); |
| 488 | } |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 489 | } |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 490 | } |
| 491 | |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 492 | int usb_close(usb_handle* h) { |
| 493 | std::lock_guard<std::mutex> lock(g_usb_handles_mutex); |
| 494 | g_usb_handles.remove(h); |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 495 | |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 496 | D("-- usb close %p (fd = %d) --\n", h, h->fd); |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 497 | |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 498 | delete h; |
| 499 | |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 500 | return 0; |
| 501 | } |
| 502 | |
Elliott Hughes | 9309ecb | 2015-04-27 14:20:17 -0700 | [diff] [blame] | 503 | static void register_device(const char* dev_name, const char* dev_path, |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 504 | unsigned char ep_in, unsigned char ep_out, |
Dan Albert | d99d902 | 2015-05-06 16:48:52 -0700 | [diff] [blame] | 505 | int interface, int serial_index, |
| 506 | unsigned zero_mask) { |
| 507 | // Since Linux will not reassign the device ID (and dev_name) as long as the |
| 508 | // device is open, we can add to the list here once we open it and remove |
| 509 | // from the list when we're finally closed and everything will work out |
| 510 | // fine. |
| 511 | // |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 512 | // If we have a usb_handle on the list of handles with a matching name, we |
Dan Albert | d99d902 | 2015-05-06 16:48:52 -0700 | [diff] [blame] | 513 | // have no further work to do. |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 514 | { |
| 515 | std::lock_guard<std::mutex> lock(g_usb_handles_mutex); |
| 516 | for (usb_handle* usb: g_usb_handles) { |
| 517 | if (usb->path == dev_name) { |
| 518 | return; |
| 519 | } |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 520 | } |
| 521 | } |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 522 | |
Elliott Hughes | ce6363b | 2015-04-25 14:44:23 -0700 | [diff] [blame] | 523 | D("[ usb located new device %s (%d/%d/%d) ]\n", dev_name, ep_in, ep_out, interface); |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 524 | std::unique_ptr<usb_handle> usb(new usb_handle); |
| 525 | usb->path = dev_name; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 526 | usb->ep_in = ep_in; |
| 527 | usb->ep_out = ep_out; |
| 528 | usb->zero_mask = zero_mask; |
| 529 | |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 530 | // Initialize mark so we don't get garbage collected after the device scan. |
| 531 | usb->mark = true; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 532 | |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 533 | usb->fd = unix_open(usb->path.c_str(), O_RDWR | O_CLOEXEC); |
| 534 | if (usb->fd == -1) { |
Elliott Hughes | ce6363b | 2015-04-25 14:44:23 -0700 | [diff] [blame] | 535 | // Opening RW failed, so see if we have RO access. |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 536 | usb->fd = unix_open(usb->path.c_str(), O_RDONLY | O_CLOEXEC); |
| 537 | if (usb->fd == -1) { |
| 538 | D("[ usb open %s failed: %s]\n", usb->path.c_str(), strerror(errno)); |
Elliott Hughes | ce6363b | 2015-04-25 14:44:23 -0700 | [diff] [blame] | 539 | return; |
| 540 | } |
Mike Lockwood | 0927bf9 | 2009-08-08 12:37:44 -0400 | [diff] [blame] | 541 | usb->writeable = 0; |
Elliott Hughes | ce6363b | 2015-04-25 14:44:23 -0700 | [diff] [blame] | 542 | } |
| 543 | |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 544 | D("[ usb opened %s%s, fd=%d]\n", |
| 545 | usb->path.c_str(), (usb->writeable ? "" : " (read-only)"), usb->fd); |
Elliott Hughes | ce6363b | 2015-04-25 14:44:23 -0700 | [diff] [blame] | 546 | |
| 547 | if (usb->writeable) { |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 548 | if (ioctl(usb->fd, USBDEVFS_CLAIMINTERFACE, &interface) != 0) { |
| 549 | D("[ usb ioctl(%d, USBDEVFS_CLAIMINTERFACE) failed: %s]\n", usb->fd, strerror(errno)); |
Elliott Hughes | ce6363b | 2015-04-25 14:44:23 -0700 | [diff] [blame] | 550 | return; |
| 551 | } |
Mike Lockwood | 0927bf9 | 2009-08-08 12:37:44 -0400 | [diff] [blame] | 552 | } |
| 553 | |
Elliott Hughes | 9309ecb | 2015-04-27 14:20:17 -0700 | [diff] [blame] | 554 | // Read the device's serial number. |
Dan Albert | d99d902 | 2015-05-06 16:48:52 -0700 | [diff] [blame] | 555 | std::string serial_path = android::base::StringPrintf( |
| 556 | "/sys/bus/usb/devices/%s/serial", dev_path + 4); |
Elliott Hughes | 9309ecb | 2015-04-27 14:20:17 -0700 | [diff] [blame] | 557 | std::string serial; |
| 558 | if (!android::base::ReadFileToString(serial_path, &serial)) { |
| 559 | D("[ usb read %s failed: %s ]\n", serial_path.c_str(), strerror(errno)); |
Dan Albert | d99d902 | 2015-05-06 16:48:52 -0700 | [diff] [blame] | 560 | // We don't actually want to treat an unknown serial as an error because |
| 561 | // devices aren't able to communicate a serial number in early bringup. |
| 562 | // http://b/20883914 |
| 563 | serial = ""; |
Mike Lockwood | 0927bf9 | 2009-08-08 12:37:44 -0400 | [diff] [blame] | 564 | } |
Elliott Hughes | 9309ecb | 2015-04-27 14:20:17 -0700 | [diff] [blame] | 565 | serial = android::base::Trim(serial); |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 566 | |
Dan Albert | d99d902 | 2015-05-06 16:48:52 -0700 | [diff] [blame] | 567 | // Add to the end of the active handles. |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 568 | usb_handle* done_usb = usb.release(); |
| 569 | { |
| 570 | std::lock_guard<std::mutex> lock(g_usb_handles_mutex); |
| 571 | g_usb_handles.push_back(done_usb); |
| 572 | } |
| 573 | register_usb_transport(done_usb, serial.c_str(), dev_path, done_usb->writeable); |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 574 | } |
| 575 | |
Dan Albert | d99d902 | 2015-05-06 16:48:52 -0700 | [diff] [blame] | 576 | static void* device_poll_thread(void* unused) { |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 577 | D("Created device thread\n"); |
Dan Albert | d99d902 | 2015-05-06 16:48:52 -0700 | [diff] [blame] | 578 | while (true) { |
| 579 | // TODO: Use inotify. |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 580 | find_usb_device("/dev/bus/usb", register_device); |
| 581 | kick_disconnected_devices(); |
| 582 | sleep(1); |
| 583 | } |
Dan Albert | d99d902 | 2015-05-06 16:48:52 -0700 | [diff] [blame] | 584 | return nullptr; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 585 | } |
| 586 | |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 587 | void usb_init() { |
| 588 | struct sigaction actions; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 589 | memset(&actions, 0, sizeof(actions)); |
| 590 | sigemptyset(&actions.sa_mask); |
| 591 | actions.sa_flags = 0; |
Elliott Hughes | 812f030 | 2015-07-23 15:20:09 -0700 | [diff] [blame^] | 592 | actions.sa_handler = [](int) {}; |
| 593 | sigaction(SIGALRM, &actions, nullptr); |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 594 | |
Elliott Hughes | 9b0f354 | 2015-05-05 13:41:21 -0700 | [diff] [blame] | 595 | if (!adb_thread_create(device_poll_thread, nullptr)) { |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 596 | fatal_errno("cannot create input thread"); |
| 597 | } |
| 598 | } |