1 /* 2 * Media Transfer Protocol implementation, backed by host filesystem. 3 * 4 * Copyright Red Hat, Inc 2014 5 * 6 * Author: 7 * Gerd Hoffmann <kraxel@redhat.com> 8 * 9 * This code is licensed under the GPL v2 or later. 10 */ 11 12 #include "qemu/osdep.h" 13 #include "qapi/error.h" 14 #include <wchar.h> 15 #include <dirent.h> 16 17 #include <sys/statvfs.h> 18 #ifdef __linux__ 19 #include <sys/inotify.h> 20 #include "qapi/error.h" 21 #include "qemu/main-loop.h" 22 #endif 23 24 #include "qemu-common.h" 25 #include "qemu/iov.h" 26 #include "trace.h" 27 #include "hw/usb.h" 28 #include "hw/usb/desc.h" 29 30 /* ----------------------------------------------------------------------- */ 31 32 enum mtp_container_type { 33 TYPE_COMMAND = 1, 34 TYPE_DATA = 2, 35 TYPE_RESPONSE = 3, 36 TYPE_EVENT = 4, 37 }; 38 39 enum mtp_code { 40 /* command codes */ 41 CMD_GET_DEVICE_INFO = 0x1001, 42 CMD_OPEN_SESSION = 0x1002, 43 CMD_CLOSE_SESSION = 0x1003, 44 CMD_GET_STORAGE_IDS = 0x1004, 45 CMD_GET_STORAGE_INFO = 0x1005, 46 CMD_GET_NUM_OBJECTS = 0x1006, 47 CMD_GET_OBJECT_HANDLES = 0x1007, 48 CMD_GET_OBJECT_INFO = 0x1008, 49 CMD_GET_OBJECT = 0x1009, 50 CMD_GET_PARTIAL_OBJECT = 0x101b, 51 52 /* response codes */ 53 RES_OK = 0x2001, 54 RES_GENERAL_ERROR = 0x2002, 55 RES_SESSION_NOT_OPEN = 0x2003, 56 RES_INVALID_TRANSACTION_ID = 0x2004, 57 RES_OPERATION_NOT_SUPPORTED = 0x2005, 58 RES_PARAMETER_NOT_SUPPORTED = 0x2006, 59 RES_INCOMPLETE_TRANSFER = 0x2007, 60 RES_INVALID_STORAGE_ID = 0x2008, 61 RES_INVALID_OBJECT_HANDLE = 0x2009, 62 RES_SPEC_BY_FORMAT_UNSUPPORTED = 0x2014, 63 RES_INVALID_PARENT_OBJECT = 0x201a, 64 RES_INVALID_PARAMETER = 0x201d, 65 RES_SESSION_ALREADY_OPEN = 0x201e, 66 67 /* format codes */ 68 FMT_UNDEFINED_OBJECT = 0x3000, 69 FMT_ASSOCIATION = 0x3001, 70 71 /* event codes */ 72 EVT_OBJ_ADDED = 0x4002, 73 EVT_OBJ_REMOVED = 0x4003, 74 EVT_OBJ_INFO_CHANGED = 0x4007, 75 }; 76 77 typedef struct { 78 uint32_t length; 79 uint16_t type; 80 uint16_t code; 81 uint32_t trans; 82 } QEMU_PACKED mtp_container; 83 84 /* ----------------------------------------------------------------------- */ 85 86 typedef struct MTPState MTPState; 87 typedef struct MTPControl MTPControl; 88 typedef struct MTPData MTPData; 89 typedef struct MTPObject MTPObject; 90 91 enum { 92 EP_DATA_IN = 1, 93 EP_DATA_OUT, 94 EP_EVENT, 95 }; 96 97 #ifdef __linux__ 98 typedef struct MTPMonEntry MTPMonEntry; 99 100 struct MTPMonEntry { 101 uint32_t event; 102 uint32_t handle; 103 104 QTAILQ_ENTRY(MTPMonEntry) next; 105 }; 106 #endif 107 108 struct MTPControl { 109 uint16_t code; 110 uint32_t trans; 111 int argc; 112 uint32_t argv[5]; 113 }; 114 115 struct MTPData { 116 uint16_t code; 117 uint32_t trans; 118 uint32_t offset; 119 uint32_t length; 120 uint32_t alloc; 121 uint8_t *data; 122 bool first; 123 int fd; 124 }; 125 126 struct MTPObject { 127 uint32_t handle; 128 uint16_t format; 129 char *name; 130 char *path; 131 struct stat stat; 132 #ifdef __linux__ 133 /* inotify watch cookie */ 134 int watchfd; 135 #endif 136 MTPObject *parent; 137 uint32_t nchildren; 138 QLIST_HEAD(, MTPObject) children; 139 QLIST_ENTRY(MTPObject) list; 140 bool have_children; 141 QTAILQ_ENTRY(MTPObject) next; 142 }; 143 144 struct MTPState { 145 USBDevice dev; 146 char *root; 147 char *desc; 148 uint32_t flags; 149 150 MTPData *data_in; 151 MTPData *data_out; 152 MTPControl *result; 153 uint32_t session; 154 uint32_t next_handle; 155 156 QTAILQ_HEAD(, MTPObject) objects; 157 #ifdef __linux__ 158 /* inotify descriptor */ 159 int inotifyfd; 160 QTAILQ_HEAD(events, MTPMonEntry) events; 161 #endif 162 }; 163 164 #define TYPE_USB_MTP "usb-mtp" 165 #define USB_MTP(obj) OBJECT_CHECK(MTPState, (obj), TYPE_USB_MTP) 166 167 #define QEMU_STORAGE_ID 0x00010001 168 169 #define MTP_FLAG_WRITABLE 0 170 171 #define FLAG_SET(_mtp, _flag) ((_mtp)->flags & (1 << (_flag))) 172 173 /* ----------------------------------------------------------------------- */ 174 175 #define MTP_MANUFACTURER "QEMU" 176 #define MTP_PRODUCT "QEMU filesharing" 177 178 enum { 179 STR_MANUFACTURER = 1, 180 STR_PRODUCT, 181 STR_SERIALNUMBER, 182 STR_MTP, 183 STR_CONFIG_FULL, 184 STR_CONFIG_HIGH, 185 STR_CONFIG_SUPER, 186 }; 187 188 static const USBDescStrings desc_strings = { 189 [STR_MANUFACTURER] = MTP_MANUFACTURER, 190 [STR_PRODUCT] = MTP_PRODUCT, 191 [STR_SERIALNUMBER] = "34617", 192 [STR_MTP] = "MTP", 193 [STR_CONFIG_FULL] = "Full speed config (usb 1.1)", 194 [STR_CONFIG_HIGH] = "High speed config (usb 2.0)", 195 [STR_CONFIG_SUPER] = "Super speed config (usb 3.0)", 196 }; 197 198 static const USBDescIface desc_iface_full = { 199 .bInterfaceNumber = 0, 200 .bNumEndpoints = 3, 201 .bInterfaceClass = USB_CLASS_STILL_IMAGE, 202 .bInterfaceSubClass = 0x01, 203 .bInterfaceProtocol = 0x01, 204 .iInterface = STR_MTP, 205 .eps = (USBDescEndpoint[]) { 206 { 207 .bEndpointAddress = USB_DIR_IN | EP_DATA_IN, 208 .bmAttributes = USB_ENDPOINT_XFER_BULK, 209 .wMaxPacketSize = 64, 210 },{ 211 .bEndpointAddress = USB_DIR_OUT | EP_DATA_OUT, 212 .bmAttributes = USB_ENDPOINT_XFER_BULK, 213 .wMaxPacketSize = 64, 214 },{ 215 .bEndpointAddress = USB_DIR_IN | EP_EVENT, 216 .bmAttributes = USB_ENDPOINT_XFER_INT, 217 .wMaxPacketSize = 64, 218 .bInterval = 0x0a, 219 }, 220 } 221 }; 222 223 static const USBDescDevice desc_device_full = { 224 .bcdUSB = 0x0200, 225 .bMaxPacketSize0 = 8, 226 .bNumConfigurations = 1, 227 .confs = (USBDescConfig[]) { 228 { 229 .bNumInterfaces = 1, 230 .bConfigurationValue = 1, 231 .iConfiguration = STR_CONFIG_FULL, 232 .bmAttributes = USB_CFG_ATT_ONE | USB_CFG_ATT_WAKEUP, 233 .bMaxPower = 2, 234 .nif = 1, 235 .ifs = &desc_iface_full, 236 }, 237 }, 238 }; 239 240 static const USBDescIface desc_iface_high = { 241 .bInterfaceNumber = 0, 242 .bNumEndpoints = 3, 243 .bInterfaceClass = USB_CLASS_STILL_IMAGE, 244 .bInterfaceSubClass = 0x01, 245 .bInterfaceProtocol = 0x01, 246 .iInterface = STR_MTP, 247 .eps = (USBDescEndpoint[]) { 248 { 249 .bEndpointAddress = USB_DIR_IN | EP_DATA_IN, 250 .bmAttributes = USB_ENDPOINT_XFER_BULK, 251 .wMaxPacketSize = 512, 252 },{ 253 .bEndpointAddress = USB_DIR_OUT | EP_DATA_OUT, 254 .bmAttributes = USB_ENDPOINT_XFER_BULK, 255 .wMaxPacketSize = 512, 256 },{ 257 .bEndpointAddress = USB_DIR_IN | EP_EVENT, 258 .bmAttributes = USB_ENDPOINT_XFER_INT, 259 .wMaxPacketSize = 64, 260 .bInterval = 0x0a, 261 }, 262 } 263 }; 264 265 static const USBDescDevice desc_device_high = { 266 .bcdUSB = 0x0200, 267 .bMaxPacketSize0 = 64, 268 .bNumConfigurations = 1, 269 .confs = (USBDescConfig[]) { 270 { 271 .bNumInterfaces = 1, 272 .bConfigurationValue = 1, 273 .iConfiguration = STR_CONFIG_HIGH, 274 .bmAttributes = USB_CFG_ATT_ONE | USB_CFG_ATT_WAKEUP, 275 .bMaxPower = 2, 276 .nif = 1, 277 .ifs = &desc_iface_high, 278 }, 279 }, 280 }; 281 282 static const USBDescMSOS desc_msos = { 283 .CompatibleID = "MTP", 284 .SelectiveSuspendEnabled = true, 285 }; 286 287 static const USBDesc desc = { 288 .id = { 289 .idVendor = 0x46f4, /* CRC16() of "QEMU" */ 290 .idProduct = 0x0004, 291 .bcdDevice = 0, 292 .iManufacturer = STR_MANUFACTURER, 293 .iProduct = STR_PRODUCT, 294 .iSerialNumber = STR_SERIALNUMBER, 295 }, 296 .full = &desc_device_full, 297 .high = &desc_device_high, 298 .str = desc_strings, 299 .msos = &desc_msos, 300 }; 301 302 /* ----------------------------------------------------------------------- */ 303 304 static MTPObject *usb_mtp_object_alloc(MTPState *s, uint32_t handle, 305 MTPObject *parent, char *name) 306 { 307 MTPObject *o = g_new0(MTPObject, 1); 308 309 if (name[0] == '.') { 310 goto ignore; 311 } 312 313 o->handle = handle; 314 o->parent = parent; 315 o->name = g_strdup(name); 316 if (parent == NULL) { 317 o->path = g_strdup(name); 318 } else { 319 o->path = g_strdup_printf("%s/%s", parent->path, name); 320 } 321 322 if (lstat(o->path, &o->stat) != 0) { 323 goto ignore; 324 } 325 if (S_ISREG(o->stat.st_mode)) { 326 o->format = FMT_UNDEFINED_OBJECT; 327 } else if (S_ISDIR(o->stat.st_mode)) { 328 o->format = FMT_ASSOCIATION; 329 } else { 330 goto ignore; 331 } 332 333 if (access(o->path, R_OK) != 0) { 334 goto ignore; 335 } 336 337 trace_usb_mtp_object_alloc(s->dev.addr, o->handle, o->path); 338 339 QTAILQ_INSERT_TAIL(&s->objects, o, next); 340 return o; 341 342 ignore: 343 g_free(o->name); 344 g_free(o->path); 345 g_free(o); 346 return NULL; 347 } 348 349 static void usb_mtp_object_free(MTPState *s, MTPObject *o) 350 { 351 MTPObject *iter; 352 353 if (!o) { 354 return; 355 } 356 357 trace_usb_mtp_object_free(s->dev.addr, o->handle, o->path); 358 359 QTAILQ_REMOVE(&s->objects, o, next); 360 if (o->parent) { 361 QLIST_REMOVE(o, list); 362 o->parent->nchildren--; 363 } 364 365 while (!QLIST_EMPTY(&o->children)) { 366 iter = QLIST_FIRST(&o->children); 367 usb_mtp_object_free(s, iter); 368 } 369 g_free(o->name); 370 g_free(o->path); 371 g_free(o); 372 } 373 374 static MTPObject *usb_mtp_object_lookup(MTPState *s, uint32_t handle) 375 { 376 MTPObject *o; 377 378 QTAILQ_FOREACH(o, &s->objects, next) { 379 if (o->handle == handle) { 380 return o; 381 } 382 } 383 return NULL; 384 } 385 386 static MTPObject *usb_mtp_add_child(MTPState *s, MTPObject *o, 387 char *name) 388 { 389 MTPObject *child = 390 usb_mtp_object_alloc(s, s->next_handle++, o, name); 391 392 if (child) { 393 trace_usb_mtp_add_child(s->dev.addr, child->handle, child->path); 394 QLIST_INSERT_HEAD(&o->children, child, list); 395 o->nchildren++; 396 397 if (child->format == FMT_ASSOCIATION) { 398 QLIST_INIT(&child->children); 399 } 400 } 401 402 return child; 403 } 404 405 #ifdef __linux__ 406 static MTPObject *usb_mtp_object_lookup_name(MTPObject *parent, 407 char *name, int len) 408 { 409 MTPObject *iter; 410 411 QLIST_FOREACH(iter, &parent->children, list) { 412 if (strncmp(iter->name, name, len) == 0) { 413 return iter; 414 } 415 } 416 417 return NULL; 418 } 419 420 static MTPObject *usb_mtp_object_lookup_wd(MTPState *s, int wd) 421 { 422 MTPObject *iter; 423 424 QTAILQ_FOREACH(iter, &s->objects, next) { 425 if (iter->watchfd == wd) { 426 return iter; 427 } 428 } 429 430 return NULL; 431 } 432 433 static void inotify_watchfn(void *arg) 434 { 435 MTPState *s = arg; 436 ssize_t bytes; 437 /* From the man page: atleast one event can be read */ 438 int len = sizeof(struct inotify_event) + NAME_MAX + 1; 439 int pos; 440 char buf[len]; 441 442 for (;;) { 443 bytes = read(s->inotifyfd, buf, len); 444 pos = 0; 445 446 if (bytes <= 0) { 447 /* Better luck next time */ 448 return; 449 } 450 451 /* 452 * TODO: Ignore initiator initiated events. 453 * For now we are good because the store is RO 454 */ 455 while (bytes > 0) { 456 char *p = buf + pos; 457 struct inotify_event *event = (struct inotify_event *)p; 458 int watchfd = 0; 459 uint32_t mask = event->mask & (IN_CREATE | IN_DELETE | 460 IN_MODIFY | IN_IGNORED); 461 MTPObject *parent = usb_mtp_object_lookup_wd(s, event->wd); 462 MTPMonEntry *entry = NULL; 463 MTPObject *o; 464 465 pos = pos + sizeof(struct inotify_event) + event->len; 466 bytes = bytes - pos; 467 468 if (!parent) { 469 continue; 470 } 471 472 switch (mask) { 473 case IN_CREATE: 474 if (usb_mtp_object_lookup_name 475 (parent, event->name, event->len)) { 476 /* Duplicate create event */ 477 continue; 478 } 479 entry = g_new0(MTPMonEntry, 1); 480 entry->handle = s->next_handle; 481 entry->event = EVT_OBJ_ADDED; 482 o = usb_mtp_add_child(s, parent, event->name); 483 if (!o) { 484 g_free(entry); 485 continue; 486 } 487 o->watchfd = watchfd; 488 trace_usb_mtp_inotify_event(s->dev.addr, event->name, 489 event->mask, "Obj Added"); 490 break; 491 492 case IN_DELETE: 493 /* 494 * The kernel issues a IN_IGNORED event 495 * when a dir containing a watchpoint is 496 * deleted, so we don't have to delete the 497 * watchpoint 498 */ 499 o = usb_mtp_object_lookup_name(parent, event->name, event->len); 500 if (!o) { 501 continue; 502 } 503 entry = g_new0(MTPMonEntry, 1); 504 entry->handle = o->handle; 505 entry->event = EVT_OBJ_REMOVED; 506 trace_usb_mtp_inotify_event(s->dev.addr, o->path, 507 event->mask, "Obj Deleted"); 508 usb_mtp_object_free(s, o); 509 break; 510 511 case IN_MODIFY: 512 o = usb_mtp_object_lookup_name(parent, event->name, event->len); 513 if (!o) { 514 continue; 515 } 516 entry = g_new0(MTPMonEntry, 1); 517 entry->handle = o->handle; 518 entry->event = EVT_OBJ_INFO_CHANGED; 519 trace_usb_mtp_inotify_event(s->dev.addr, o->path, 520 event->mask, "Obj Modified"); 521 break; 522 523 case IN_IGNORED: 524 o = usb_mtp_object_lookup_name(parent, event->name, event->len); 525 trace_usb_mtp_inotify_event(s->dev.addr, o->path, 526 event->mask, "Obj ignored"); 527 break; 528 529 default: 530 fprintf(stderr, "usb-mtp: failed to parse inotify event\n"); 531 continue; 532 } 533 534 if (entry) { 535 QTAILQ_INSERT_HEAD(&s->events, entry, next); 536 } 537 } 538 } 539 } 540 541 static int usb_mtp_inotify_init(MTPState *s) 542 { 543 int fd; 544 545 fd = inotify_init1(IN_NONBLOCK); 546 if (fd == -1) { 547 return 1; 548 } 549 550 QTAILQ_INIT(&s->events); 551 s->inotifyfd = fd; 552 553 qemu_set_fd_handler(fd, inotify_watchfn, NULL, s); 554 555 return 0; 556 } 557 558 static void usb_mtp_inotify_cleanup(MTPState *s) 559 { 560 MTPMonEntry *e, *p; 561 562 if (!s->inotifyfd) { 563 return; 564 } 565 566 qemu_set_fd_handler(s->inotifyfd, NULL, NULL, s); 567 close(s->inotifyfd); 568 569 QTAILQ_FOREACH_SAFE(e, &s->events, next, p) { 570 QTAILQ_REMOVE(&s->events, e, next); 571 g_free(e); 572 } 573 } 574 575 static int usb_mtp_add_watch(int inotifyfd, char *path) 576 { 577 uint32_t mask = IN_CREATE | IN_DELETE | IN_MODIFY | 578 IN_ISDIR; 579 580 return inotify_add_watch(inotifyfd, path, mask); 581 } 582 #endif 583 584 static void usb_mtp_object_readdir(MTPState *s, MTPObject *o) 585 { 586 struct dirent *entry; 587 DIR *dir; 588 589 if (o->have_children) { 590 return; 591 } 592 o->have_children = true; 593 594 dir = opendir(o->path); 595 if (!dir) { 596 return; 597 } 598 #ifdef __linux__ 599 int watchfd = usb_mtp_add_watch(s->inotifyfd, o->path); 600 if (watchfd == -1) { 601 fprintf(stderr, "usb-mtp: failed to add watch for %s\n", o->path); 602 } else { 603 trace_usb_mtp_inotify_event(s->dev.addr, o->path, 604 0, "Watch Added"); 605 o->watchfd = watchfd; 606 } 607 #endif 608 while ((entry = readdir(dir)) != NULL) { 609 usb_mtp_add_child(s, o, entry->d_name); 610 } 611 closedir(dir); 612 } 613 614 /* ----------------------------------------------------------------------- */ 615 616 static MTPData *usb_mtp_data_alloc(MTPControl *c) 617 { 618 MTPData *data = g_new0(MTPData, 1); 619 620 data->code = c->code; 621 data->trans = c->trans; 622 data->fd = -1; 623 data->first = true; 624 return data; 625 } 626 627 static void usb_mtp_data_free(MTPData *data) 628 { 629 if (data == NULL) { 630 return; 631 } 632 if (data->fd != -1) { 633 close(data->fd); 634 } 635 g_free(data->data); 636 g_free(data); 637 } 638 639 static void usb_mtp_realloc(MTPData *data, uint32_t bytes) 640 { 641 if (data->length + bytes <= data->alloc) { 642 return; 643 } 644 data->alloc = (data->length + bytes + 0xff) & ~0xff; 645 data->data = g_realloc(data->data, data->alloc); 646 } 647 648 static void usb_mtp_add_u8(MTPData *data, uint8_t val) 649 { 650 usb_mtp_realloc(data, 1); 651 data->data[data->length++] = val; 652 } 653 654 static void usb_mtp_add_u16(MTPData *data, uint16_t val) 655 { 656 usb_mtp_realloc(data, 2); 657 data->data[data->length++] = (val >> 0) & 0xff; 658 data->data[data->length++] = (val >> 8) & 0xff; 659 } 660 661 static void usb_mtp_add_u32(MTPData *data, uint32_t val) 662 { 663 usb_mtp_realloc(data, 4); 664 data->data[data->length++] = (val >> 0) & 0xff; 665 data->data[data->length++] = (val >> 8) & 0xff; 666 data->data[data->length++] = (val >> 16) & 0xff; 667 data->data[data->length++] = (val >> 24) & 0xff; 668 } 669 670 static void usb_mtp_add_u64(MTPData *data, uint64_t val) 671 { 672 usb_mtp_realloc(data, 8); 673 data->data[data->length++] = (val >> 0) & 0xff; 674 data->data[data->length++] = (val >> 8) & 0xff; 675 data->data[data->length++] = (val >> 16) & 0xff; 676 data->data[data->length++] = (val >> 24) & 0xff; 677 data->data[data->length++] = (val >> 32) & 0xff; 678 data->data[data->length++] = (val >> 40) & 0xff; 679 data->data[data->length++] = (val >> 48) & 0xff; 680 data->data[data->length++] = (val >> 56) & 0xff; 681 } 682 683 static void usb_mtp_add_u16_array(MTPData *data, uint32_t len, 684 const uint16_t *vals) 685 { 686 int i; 687 688 usb_mtp_add_u32(data, len); 689 for (i = 0; i < len; i++) { 690 usb_mtp_add_u16(data, vals[i]); 691 } 692 } 693 694 static void usb_mtp_add_u32_array(MTPData *data, uint32_t len, 695 const uint32_t *vals) 696 { 697 int i; 698 699 usb_mtp_add_u32(data, len); 700 for (i = 0; i < len; i++) { 701 usb_mtp_add_u32(data, vals[i]); 702 } 703 } 704 705 static void usb_mtp_add_wstr(MTPData *data, const wchar_t *str) 706 { 707 uint32_t len = wcslen(str); 708 int i; 709 710 if (len > 0) { 711 len++; /* include terminating L'\0' */ 712 } 713 714 usb_mtp_add_u8(data, len); 715 for (i = 0; i < len; i++) { 716 usb_mtp_add_u16(data, str[i]); 717 } 718 } 719 720 static void usb_mtp_add_str(MTPData *data, const char *str) 721 { 722 uint32_t len = strlen(str)+1; 723 wchar_t wstr[len]; 724 size_t ret; 725 726 ret = mbstowcs(wstr, str, len); 727 if (ret == -1) { 728 usb_mtp_add_wstr(data, L"Oops"); 729 } else { 730 usb_mtp_add_wstr(data, wstr); 731 } 732 } 733 734 static void usb_mtp_add_time(MTPData *data, time_t time) 735 { 736 char buf[16]; 737 struct tm tm; 738 739 gmtime_r(&time, &tm); 740 strftime(buf, sizeof(buf), "%Y%m%dT%H%M%S", &tm); 741 usb_mtp_add_str(data, buf); 742 } 743 744 /* ----------------------------------------------------------------------- */ 745 746 static void usb_mtp_queue_result(MTPState *s, uint16_t code, uint32_t trans, 747 int argc, uint32_t arg0, uint32_t arg1) 748 { 749 MTPControl *c = g_new0(MTPControl, 1); 750 751 c->code = code; 752 c->trans = trans; 753 c->argc = argc; 754 if (argc > 0) { 755 c->argv[0] = arg0; 756 } 757 if (argc > 1) { 758 c->argv[1] = arg1; 759 } 760 761 assert(s->result == NULL); 762 s->result = c; 763 } 764 765 /* ----------------------------------------------------------------------- */ 766 767 static MTPData *usb_mtp_get_device_info(MTPState *s, MTPControl *c) 768 { 769 static const uint16_t ops[] = { 770 CMD_GET_DEVICE_INFO, 771 CMD_OPEN_SESSION, 772 CMD_CLOSE_SESSION, 773 CMD_GET_STORAGE_IDS, 774 CMD_GET_STORAGE_INFO, 775 CMD_GET_NUM_OBJECTS, 776 CMD_GET_OBJECT_HANDLES, 777 CMD_GET_OBJECT_INFO, 778 CMD_GET_OBJECT, 779 CMD_GET_PARTIAL_OBJECT, 780 }; 781 static const uint16_t fmt[] = { 782 FMT_UNDEFINED_OBJECT, 783 FMT_ASSOCIATION, 784 }; 785 MTPData *d = usb_mtp_data_alloc(c); 786 787 trace_usb_mtp_op_get_device_info(s->dev.addr); 788 789 usb_mtp_add_u16(d, 100); 790 usb_mtp_add_u32(d, 0xffffffff); 791 usb_mtp_add_u16(d, 0x0101); 792 usb_mtp_add_wstr(d, L""); 793 usb_mtp_add_u16(d, 0x0000); 794 795 usb_mtp_add_u16_array(d, ARRAY_SIZE(ops), ops); 796 usb_mtp_add_u16_array(d, 0, NULL); 797 usb_mtp_add_u16_array(d, 0, NULL); 798 usb_mtp_add_u16_array(d, 0, NULL); 799 usb_mtp_add_u16_array(d, ARRAY_SIZE(fmt), fmt); 800 801 usb_mtp_add_wstr(d, L"" MTP_MANUFACTURER); 802 usb_mtp_add_wstr(d, L"" MTP_PRODUCT); 803 usb_mtp_add_wstr(d, L"0.1"); 804 usb_mtp_add_wstr(d, L"0123456789abcdef0123456789abcdef"); 805 806 return d; 807 } 808 809 static MTPData *usb_mtp_get_storage_ids(MTPState *s, MTPControl *c) 810 { 811 static const uint32_t ids[] = { 812 QEMU_STORAGE_ID, 813 }; 814 MTPData *d = usb_mtp_data_alloc(c); 815 816 trace_usb_mtp_op_get_storage_ids(s->dev.addr); 817 818 usb_mtp_add_u32_array(d, ARRAY_SIZE(ids), ids); 819 820 return d; 821 } 822 823 static MTPData *usb_mtp_get_storage_info(MTPState *s, MTPControl *c) 824 { 825 MTPData *d = usb_mtp_data_alloc(c); 826 struct statvfs buf; 827 int rc; 828 829 trace_usb_mtp_op_get_storage_info(s->dev.addr); 830 831 if (FLAG_SET(s, MTP_FLAG_WRITABLE)) { 832 usb_mtp_add_u16(d, 0x0003); 833 usb_mtp_add_u16(d, 0x0002); 834 usb_mtp_add_u16(d, 0x0000); 835 } else { 836 usb_mtp_add_u16(d, 0x0001); 837 usb_mtp_add_u16(d, 0x0002); 838 usb_mtp_add_u16(d, 0x0001); 839 } 840 841 rc = statvfs(s->root, &buf); 842 if (rc == 0) { 843 usb_mtp_add_u64(d, (uint64_t)buf.f_frsize * buf.f_blocks); 844 usb_mtp_add_u64(d, (uint64_t)buf.f_bavail * buf.f_blocks); 845 usb_mtp_add_u32(d, buf.f_ffree); 846 } else { 847 usb_mtp_add_u64(d, 0xffffffff); 848 usb_mtp_add_u64(d, 0xffffffff); 849 usb_mtp_add_u32(d, 0xffffffff); 850 } 851 852 usb_mtp_add_str(d, s->desc); 853 usb_mtp_add_wstr(d, L"123456789abcdef"); 854 return d; 855 } 856 857 static MTPData *usb_mtp_get_object_handles(MTPState *s, MTPControl *c, 858 MTPObject *o) 859 { 860 MTPData *d = usb_mtp_data_alloc(c); 861 uint32_t i = 0, handles[o->nchildren]; 862 MTPObject *iter; 863 864 trace_usb_mtp_op_get_object_handles(s->dev.addr, o->handle, o->path); 865 866 QLIST_FOREACH(iter, &o->children, list) { 867 handles[i++] = iter->handle; 868 } 869 assert(i == o->nchildren); 870 usb_mtp_add_u32_array(d, o->nchildren, handles); 871 872 return d; 873 } 874 875 static MTPData *usb_mtp_get_object_info(MTPState *s, MTPControl *c, 876 MTPObject *o) 877 { 878 MTPData *d = usb_mtp_data_alloc(c); 879 880 trace_usb_mtp_op_get_object_info(s->dev.addr, o->handle, o->path); 881 882 usb_mtp_add_u32(d, QEMU_STORAGE_ID); 883 usb_mtp_add_u16(d, o->format); 884 usb_mtp_add_u16(d, 0); 885 usb_mtp_add_u32(d, o->stat.st_size); 886 887 usb_mtp_add_u16(d, 0); 888 usb_mtp_add_u32(d, 0); 889 usb_mtp_add_u32(d, 0); 890 usb_mtp_add_u32(d, 0); 891 usb_mtp_add_u32(d, 0); 892 usb_mtp_add_u32(d, 0); 893 usb_mtp_add_u32(d, 0); 894 895 if (o->parent) { 896 usb_mtp_add_u32(d, o->parent->handle); 897 } else { 898 usb_mtp_add_u32(d, 0); 899 } 900 if (o->format == FMT_ASSOCIATION) { 901 usb_mtp_add_u16(d, 0x0001); 902 usb_mtp_add_u32(d, 0x00000001); 903 usb_mtp_add_u32(d, 0); 904 } else { 905 usb_mtp_add_u16(d, 0); 906 usb_mtp_add_u32(d, 0); 907 usb_mtp_add_u32(d, 0); 908 } 909 910 usb_mtp_add_str(d, o->name); 911 usb_mtp_add_time(d, o->stat.st_ctime); 912 usb_mtp_add_time(d, o->stat.st_mtime); 913 usb_mtp_add_wstr(d, L""); 914 915 return d; 916 } 917 918 static MTPData *usb_mtp_get_object(MTPState *s, MTPControl *c, 919 MTPObject *o) 920 { 921 MTPData *d = usb_mtp_data_alloc(c); 922 923 trace_usb_mtp_op_get_object(s->dev.addr, o->handle, o->path); 924 925 d->fd = open(o->path, O_RDONLY); 926 if (d->fd == -1) { 927 usb_mtp_data_free(d); 928 return NULL; 929 } 930 d->length = o->stat.st_size; 931 d->alloc = 512; 932 d->data = g_malloc(d->alloc); 933 return d; 934 } 935 936 static MTPData *usb_mtp_get_partial_object(MTPState *s, MTPControl *c, 937 MTPObject *o) 938 { 939 MTPData *d = usb_mtp_data_alloc(c); 940 off_t offset; 941 942 trace_usb_mtp_op_get_partial_object(s->dev.addr, o->handle, o->path, 943 c->argv[1], c->argv[2]); 944 945 d->fd = open(o->path, O_RDONLY); 946 if (d->fd == -1) { 947 usb_mtp_data_free(d); 948 return NULL; 949 } 950 951 offset = c->argv[1]; 952 if (offset > o->stat.st_size) { 953 offset = o->stat.st_size; 954 } 955 if (lseek(d->fd, offset, SEEK_SET) < 0) { 956 usb_mtp_data_free(d); 957 return NULL; 958 } 959 960 d->length = c->argv[2]; 961 if (d->length > o->stat.st_size - offset) { 962 d->length = o->stat.st_size - offset; 963 } 964 965 return d; 966 } 967 968 static void usb_mtp_command(MTPState *s, MTPControl *c) 969 { 970 MTPData *data_in = NULL; 971 MTPObject *o; 972 uint32_t nres = 0, res0 = 0; 973 974 /* sanity checks */ 975 if (c->code >= CMD_CLOSE_SESSION && s->session == 0) { 976 usb_mtp_queue_result(s, RES_SESSION_NOT_OPEN, 977 c->trans, 0, 0, 0); 978 return; 979 } 980 981 /* process commands */ 982 switch (c->code) { 983 case CMD_GET_DEVICE_INFO: 984 data_in = usb_mtp_get_device_info(s, c); 985 break; 986 case CMD_OPEN_SESSION: 987 if (s->session) { 988 usb_mtp_queue_result(s, RES_SESSION_ALREADY_OPEN, 989 c->trans, 1, s->session, 0); 990 return; 991 } 992 if (c->argv[0] == 0) { 993 usb_mtp_queue_result(s, RES_INVALID_PARAMETER, 994 c->trans, 0, 0, 0); 995 return; 996 } 997 trace_usb_mtp_op_open_session(s->dev.addr); 998 s->session = c->argv[0]; 999 usb_mtp_object_alloc(s, s->next_handle++, NULL, s->root); 1000 #ifdef __linux__ 1001 if (usb_mtp_inotify_init(s)) { 1002 fprintf(stderr, "usb-mtp: file monitoring init failed\n"); 1003 } 1004 #endif 1005 break; 1006 case CMD_CLOSE_SESSION: 1007 trace_usb_mtp_op_close_session(s->dev.addr); 1008 s->session = 0; 1009 s->next_handle = 0; 1010 #ifdef __linux__ 1011 usb_mtp_inotify_cleanup(s); 1012 #endif 1013 usb_mtp_object_free(s, QTAILQ_FIRST(&s->objects)); 1014 assert(QTAILQ_EMPTY(&s->objects)); 1015 break; 1016 case CMD_GET_STORAGE_IDS: 1017 data_in = usb_mtp_get_storage_ids(s, c); 1018 break; 1019 case CMD_GET_STORAGE_INFO: 1020 if (c->argv[0] != QEMU_STORAGE_ID && 1021 c->argv[0] != 0xffffffff) { 1022 usb_mtp_queue_result(s, RES_INVALID_STORAGE_ID, 1023 c->trans, 0, 0, 0); 1024 return; 1025 } 1026 data_in = usb_mtp_get_storage_info(s, c); 1027 break; 1028 case CMD_GET_NUM_OBJECTS: 1029 case CMD_GET_OBJECT_HANDLES: 1030 if (c->argv[0] != QEMU_STORAGE_ID && 1031 c->argv[0] != 0xffffffff) { 1032 usb_mtp_queue_result(s, RES_INVALID_STORAGE_ID, 1033 c->trans, 0, 0, 0); 1034 return; 1035 } 1036 if (c->argv[1] != 0x00000000) { 1037 usb_mtp_queue_result(s, RES_SPEC_BY_FORMAT_UNSUPPORTED, 1038 c->trans, 0, 0, 0); 1039 return; 1040 } 1041 if (c->argv[2] == 0x00000000 || 1042 c->argv[2] == 0xffffffff) { 1043 o = QTAILQ_FIRST(&s->objects); 1044 } else { 1045 o = usb_mtp_object_lookup(s, c->argv[2]); 1046 } 1047 if (o == NULL) { 1048 usb_mtp_queue_result(s, RES_INVALID_OBJECT_HANDLE, 1049 c->trans, 0, 0, 0); 1050 return; 1051 } 1052 if (o->format != FMT_ASSOCIATION) { 1053 usb_mtp_queue_result(s, RES_INVALID_PARENT_OBJECT, 1054 c->trans, 0, 0, 0); 1055 return; 1056 } 1057 usb_mtp_object_readdir(s, o); 1058 if (c->code == CMD_GET_NUM_OBJECTS) { 1059 trace_usb_mtp_op_get_num_objects(s->dev.addr, o->handle, o->path); 1060 nres = 1; 1061 res0 = o->nchildren; 1062 } else { 1063 data_in = usb_mtp_get_object_handles(s, c, o); 1064 } 1065 break; 1066 case CMD_GET_OBJECT_INFO: 1067 o = usb_mtp_object_lookup(s, c->argv[0]); 1068 if (o == NULL) { 1069 usb_mtp_queue_result(s, RES_INVALID_OBJECT_HANDLE, 1070 c->trans, 0, 0, 0); 1071 return; 1072 } 1073 data_in = usb_mtp_get_object_info(s, c, o); 1074 break; 1075 case CMD_GET_OBJECT: 1076 o = usb_mtp_object_lookup(s, c->argv[0]); 1077 if (o == NULL) { 1078 usb_mtp_queue_result(s, RES_INVALID_OBJECT_HANDLE, 1079 c->trans, 0, 0, 0); 1080 return; 1081 } 1082 if (o->format == FMT_ASSOCIATION) { 1083 usb_mtp_queue_result(s, RES_INVALID_OBJECT_HANDLE, 1084 c->trans, 0, 0, 0); 1085 return; 1086 } 1087 data_in = usb_mtp_get_object(s, c, o); 1088 if (data_in == NULL) { 1089 usb_mtp_queue_result(s, RES_GENERAL_ERROR, 1090 c->trans, 0, 0, 0); 1091 return; 1092 } 1093 break; 1094 case CMD_GET_PARTIAL_OBJECT: 1095 o = usb_mtp_object_lookup(s, c->argv[0]); 1096 if (o == NULL) { 1097 usb_mtp_queue_result(s, RES_INVALID_OBJECT_HANDLE, 1098 c->trans, 0, 0, 0); 1099 return; 1100 } 1101 if (o->format == FMT_ASSOCIATION) { 1102 usb_mtp_queue_result(s, RES_INVALID_OBJECT_HANDLE, 1103 c->trans, 0, 0, 0); 1104 return; 1105 } 1106 data_in = usb_mtp_get_partial_object(s, c, o); 1107 if (data_in == NULL) { 1108 usb_mtp_queue_result(s, RES_GENERAL_ERROR, 1109 c->trans, 0, 0, 0); 1110 return; 1111 } 1112 nres = 1; 1113 res0 = data_in->length; 1114 break; 1115 default: 1116 trace_usb_mtp_op_unknown(s->dev.addr, c->code); 1117 usb_mtp_queue_result(s, RES_OPERATION_NOT_SUPPORTED, 1118 c->trans, 0, 0, 0); 1119 return; 1120 } 1121 1122 /* return results on success */ 1123 if (data_in) { 1124 assert(s->data_in == NULL); 1125 s->data_in = data_in; 1126 } 1127 usb_mtp_queue_result(s, RES_OK, c->trans, nres, res0, 0); 1128 } 1129 1130 /* ----------------------------------------------------------------------- */ 1131 1132 static void usb_mtp_handle_reset(USBDevice *dev) 1133 { 1134 MTPState *s = USB_MTP(dev); 1135 1136 trace_usb_mtp_reset(s->dev.addr); 1137 1138 #ifdef __linux__ 1139 usb_mtp_inotify_cleanup(s); 1140 #endif 1141 usb_mtp_object_free(s, QTAILQ_FIRST(&s->objects)); 1142 s->session = 0; 1143 usb_mtp_data_free(s->data_in); 1144 s->data_in = NULL; 1145 usb_mtp_data_free(s->data_out); 1146 s->data_out = NULL; 1147 g_free(s->result); 1148 s->result = NULL; 1149 } 1150 1151 static void usb_mtp_handle_control(USBDevice *dev, USBPacket *p, 1152 int request, int value, int index, 1153 int length, uint8_t *data) 1154 { 1155 int ret; 1156 1157 ret = usb_desc_handle_control(dev, p, request, value, index, length, data); 1158 if (ret >= 0) { 1159 return; 1160 } 1161 1162 trace_usb_mtp_stall(dev->addr, "unknown control request"); 1163 p->status = USB_RET_STALL; 1164 } 1165 1166 static void usb_mtp_cancel_packet(USBDevice *dev, USBPacket *p) 1167 { 1168 /* we don't use async packets, so this should never be called */ 1169 fprintf(stderr, "%s\n", __func__); 1170 } 1171 1172 static void usb_mtp_handle_data(USBDevice *dev, USBPacket *p) 1173 { 1174 MTPState *s = USB_MTP(dev); 1175 MTPControl cmd; 1176 mtp_container container; 1177 uint32_t params[5]; 1178 int i, rc; 1179 1180 switch (p->ep->nr) { 1181 case EP_DATA_IN: 1182 if (s->data_out != NULL) { 1183 /* guest bug */ 1184 trace_usb_mtp_stall(s->dev.addr, "awaiting data-out"); 1185 p->status = USB_RET_STALL; 1186 return; 1187 } 1188 if (p->iov.size < sizeof(container)) { 1189 trace_usb_mtp_stall(s->dev.addr, "packet too small"); 1190 p->status = USB_RET_STALL; 1191 return; 1192 } 1193 if (s->data_in != NULL) { 1194 MTPData *d = s->data_in; 1195 int dlen = d->length - d->offset; 1196 if (d->first) { 1197 trace_usb_mtp_data_in(s->dev.addr, d->trans, d->length); 1198 container.length = cpu_to_le32(d->length + sizeof(container)); 1199 container.type = cpu_to_le16(TYPE_DATA); 1200 container.code = cpu_to_le16(d->code); 1201 container.trans = cpu_to_le32(d->trans); 1202 usb_packet_copy(p, &container, sizeof(container)); 1203 d->first = false; 1204 if (dlen > p->iov.size - sizeof(container)) { 1205 dlen = p->iov.size - sizeof(container); 1206 } 1207 } else { 1208 if (dlen > p->iov.size) { 1209 dlen = p->iov.size; 1210 } 1211 } 1212 if (d->fd == -1) { 1213 usb_packet_copy(p, d->data + d->offset, dlen); 1214 } else { 1215 if (d->alloc < p->iov.size) { 1216 d->alloc = p->iov.size; 1217 d->data = g_realloc(d->data, d->alloc); 1218 } 1219 rc = read(d->fd, d->data, dlen); 1220 if (rc != dlen) { 1221 memset(d->data, 0, dlen); 1222 s->result->code = RES_INCOMPLETE_TRANSFER; 1223 } 1224 usb_packet_copy(p, d->data, dlen); 1225 } 1226 d->offset += dlen; 1227 if (d->offset == d->length) { 1228 usb_mtp_data_free(s->data_in); 1229 s->data_in = NULL; 1230 } 1231 } else if (s->result != NULL) { 1232 MTPControl *r = s->result; 1233 int length = sizeof(container) + r->argc * sizeof(uint32_t); 1234 if (r->code == RES_OK) { 1235 trace_usb_mtp_success(s->dev.addr, r->trans, 1236 (r->argc > 0) ? r->argv[0] : 0, 1237 (r->argc > 1) ? r->argv[1] : 0); 1238 } else { 1239 trace_usb_mtp_error(s->dev.addr, r->code, r->trans, 1240 (r->argc > 0) ? r->argv[0] : 0, 1241 (r->argc > 1) ? r->argv[1] : 0); 1242 } 1243 container.length = cpu_to_le32(length); 1244 container.type = cpu_to_le16(TYPE_RESPONSE); 1245 container.code = cpu_to_le16(r->code); 1246 container.trans = cpu_to_le32(r->trans); 1247 for (i = 0; i < r->argc; i++) { 1248 params[i] = cpu_to_le32(r->argv[i]); 1249 } 1250 usb_packet_copy(p, &container, sizeof(container)); 1251 usb_packet_copy(p, ¶ms, length - sizeof(container)); 1252 g_free(s->result); 1253 s->result = NULL; 1254 } 1255 break; 1256 case EP_DATA_OUT: 1257 if (p->iov.size < sizeof(container)) { 1258 trace_usb_mtp_stall(s->dev.addr, "packet too small"); 1259 p->status = USB_RET_STALL; 1260 return; 1261 } 1262 usb_packet_copy(p, &container, sizeof(container)); 1263 switch (le16_to_cpu(container.type)) { 1264 case TYPE_COMMAND: 1265 if (s->data_in || s->data_out || s->result) { 1266 trace_usb_mtp_stall(s->dev.addr, "transaction inflight"); 1267 p->status = USB_RET_STALL; 1268 return; 1269 } 1270 cmd.code = le16_to_cpu(container.code); 1271 cmd.argc = (le32_to_cpu(container.length) - sizeof(container)) 1272 / sizeof(uint32_t); 1273 cmd.trans = le32_to_cpu(container.trans); 1274 if (cmd.argc > ARRAY_SIZE(cmd.argv)) { 1275 cmd.argc = ARRAY_SIZE(cmd.argv); 1276 } 1277 if (p->iov.size < sizeof(container) + cmd.argc * sizeof(uint32_t)) { 1278 trace_usb_mtp_stall(s->dev.addr, "packet too small"); 1279 p->status = USB_RET_STALL; 1280 return; 1281 } 1282 usb_packet_copy(p, ¶ms, cmd.argc * sizeof(uint32_t)); 1283 for (i = 0; i < cmd.argc; i++) { 1284 cmd.argv[i] = le32_to_cpu(params[i]); 1285 } 1286 trace_usb_mtp_command(s->dev.addr, cmd.code, cmd.trans, 1287 (cmd.argc > 0) ? cmd.argv[0] : 0, 1288 (cmd.argc > 1) ? cmd.argv[1] : 0, 1289 (cmd.argc > 2) ? cmd.argv[2] : 0, 1290 (cmd.argc > 3) ? cmd.argv[3] : 0, 1291 (cmd.argc > 4) ? cmd.argv[4] : 0); 1292 usb_mtp_command(s, &cmd); 1293 break; 1294 default: 1295 /* not needed as long as the mtp device is read-only */ 1296 p->status = USB_RET_STALL; 1297 return; 1298 } 1299 break; 1300 case EP_EVENT: 1301 #ifdef __linux__ 1302 if (!QTAILQ_EMPTY(&s->events)) { 1303 struct MTPMonEntry *e = QTAILQ_LAST(&s->events, events); 1304 uint32_t handle; 1305 int len = sizeof(container) + sizeof(uint32_t); 1306 1307 if (p->iov.size < len) { 1308 trace_usb_mtp_stall(s->dev.addr, 1309 "packet too small to send event"); 1310 p->status = USB_RET_STALL; 1311 return; 1312 } 1313 1314 QTAILQ_REMOVE(&s->events, e, next); 1315 container.length = cpu_to_le32(len); 1316 container.type = cpu_to_le32(TYPE_EVENT); 1317 container.code = cpu_to_le16(e->event); 1318 container.trans = 0; /* no trans specific events */ 1319 handle = cpu_to_le32(e->handle); 1320 usb_packet_copy(p, &container, sizeof(container)); 1321 usb_packet_copy(p, &handle, sizeof(uint32_t)); 1322 g_free(e); 1323 return; 1324 } 1325 #endif 1326 p->status = USB_RET_NAK; 1327 return; 1328 default: 1329 trace_usb_mtp_stall(s->dev.addr, "invalid endpoint"); 1330 p->status = USB_RET_STALL; 1331 return; 1332 } 1333 1334 if (p->actual_length == 0) { 1335 trace_usb_mtp_nak(s->dev.addr, p->ep->nr); 1336 p->status = USB_RET_NAK; 1337 return; 1338 } else { 1339 trace_usb_mtp_xfer(s->dev.addr, p->ep->nr, p->actual_length, 1340 p->iov.size); 1341 return; 1342 } 1343 } 1344 1345 static void usb_mtp_realize(USBDevice *dev, Error **errp) 1346 { 1347 MTPState *s = USB_MTP(dev); 1348 1349 usb_desc_create_serial(dev); 1350 usb_desc_init(dev); 1351 QTAILQ_INIT(&s->objects); 1352 if (s->desc == NULL) { 1353 if (s->root == NULL) { 1354 error_setg(errp, "usb-mtp: x-root property must be configured"); 1355 return; 1356 } 1357 s->desc = strrchr(s->root, '/'); 1358 if (s->desc && s->desc[0]) { 1359 s->desc = g_strdup(s->desc + 1); 1360 } else { 1361 s->desc = g_strdup("none"); 1362 } 1363 } 1364 } 1365 1366 static const VMStateDescription vmstate_usb_mtp = { 1367 .name = "usb-mtp", 1368 .unmigratable = 1, 1369 .version_id = 1, 1370 .minimum_version_id = 1, 1371 .fields = (VMStateField[]) { 1372 VMSTATE_USB_DEVICE(dev, MTPState), 1373 VMSTATE_END_OF_LIST() 1374 } 1375 }; 1376 1377 static Property mtp_properties[] = { 1378 DEFINE_PROP_STRING("x-root", MTPState, root), 1379 DEFINE_PROP_STRING("desc", MTPState, desc), 1380 DEFINE_PROP_END_OF_LIST(), 1381 }; 1382 1383 static void usb_mtp_class_initfn(ObjectClass *klass, void *data) 1384 { 1385 DeviceClass *dc = DEVICE_CLASS(klass); 1386 USBDeviceClass *uc = USB_DEVICE_CLASS(klass); 1387 1388 uc->realize = usb_mtp_realize; 1389 uc->product_desc = "QEMU USB MTP"; 1390 uc->usb_desc = &desc; 1391 uc->cancel_packet = usb_mtp_cancel_packet; 1392 uc->handle_attach = usb_desc_attach; 1393 uc->handle_reset = usb_mtp_handle_reset; 1394 uc->handle_control = usb_mtp_handle_control; 1395 uc->handle_data = usb_mtp_handle_data; 1396 dc->fw_name = "mtp"; 1397 dc->vmsd = &vmstate_usb_mtp; 1398 dc->props = mtp_properties; 1399 } 1400 1401 static TypeInfo mtp_info = { 1402 .name = TYPE_USB_MTP, 1403 .parent = TYPE_USB_DEVICE, 1404 .instance_size = sizeof(MTPState), 1405 .class_init = usb_mtp_class_initfn, 1406 }; 1407 1408 static void usb_mtp_register_types(void) 1409 { 1410 type_register_static(&mtp_info); 1411 } 1412 1413 type_init(usb_mtp_register_types) 1414