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 CONFIG_INOTIFY1 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 CONFIG_INOTIFY1 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 CONFIG_INOTIFY1 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 CONFIG_INOTIFY1 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 CONFIG_INOTIFY1 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 pos; 439 char buf[sizeof(struct inotify_event) + NAME_MAX + 1]; 440 441 for (;;) { 442 bytes = read(s->inotifyfd, buf, sizeof(buf)); 443 pos = 0; 444 445 if (bytes <= 0) { 446 /* Better luck next time */ 447 return; 448 } 449 450 /* 451 * TODO: Ignore initiator initiated events. 452 * For now we are good because the store is RO 453 */ 454 while (bytes > 0) { 455 char *p = buf + pos; 456 struct inotify_event *event = (struct inotify_event *)p; 457 int watchfd = 0; 458 uint32_t mask = event->mask & (IN_CREATE | IN_DELETE | 459 IN_MODIFY | IN_IGNORED); 460 MTPObject *parent = usb_mtp_object_lookup_wd(s, event->wd); 461 MTPMonEntry *entry = NULL; 462 MTPObject *o; 463 464 pos = pos + sizeof(struct inotify_event) + event->len; 465 bytes = bytes - pos; 466 467 if (!parent) { 468 continue; 469 } 470 471 switch (mask) { 472 case IN_CREATE: 473 if (usb_mtp_object_lookup_name 474 (parent, event->name, event->len)) { 475 /* Duplicate create event */ 476 continue; 477 } 478 entry = g_new0(MTPMonEntry, 1); 479 entry->handle = s->next_handle; 480 entry->event = EVT_OBJ_ADDED; 481 o = usb_mtp_add_child(s, parent, event->name); 482 if (!o) { 483 g_free(entry); 484 continue; 485 } 486 o->watchfd = watchfd; 487 trace_usb_mtp_inotify_event(s->dev.addr, event->name, 488 event->mask, "Obj Added"); 489 break; 490 491 case IN_DELETE: 492 /* 493 * The kernel issues a IN_IGNORED event 494 * when a dir containing a watchpoint is 495 * deleted, so we don't have to delete the 496 * watchpoint 497 */ 498 o = usb_mtp_object_lookup_name(parent, event->name, event->len); 499 if (!o) { 500 continue; 501 } 502 entry = g_new0(MTPMonEntry, 1); 503 entry->handle = o->handle; 504 entry->event = EVT_OBJ_REMOVED; 505 trace_usb_mtp_inotify_event(s->dev.addr, o->path, 506 event->mask, "Obj Deleted"); 507 usb_mtp_object_free(s, o); 508 break; 509 510 case IN_MODIFY: 511 o = usb_mtp_object_lookup_name(parent, event->name, event->len); 512 if (!o) { 513 continue; 514 } 515 entry = g_new0(MTPMonEntry, 1); 516 entry->handle = o->handle; 517 entry->event = EVT_OBJ_INFO_CHANGED; 518 trace_usb_mtp_inotify_event(s->dev.addr, o->path, 519 event->mask, "Obj Modified"); 520 break; 521 522 case IN_IGNORED: 523 o = usb_mtp_object_lookup_name(parent, event->name, event->len); 524 trace_usb_mtp_inotify_event(s->dev.addr, o->path, 525 event->mask, "Obj ignored"); 526 break; 527 528 default: 529 fprintf(stderr, "usb-mtp: failed to parse inotify event\n"); 530 continue; 531 } 532 533 if (entry) { 534 QTAILQ_INSERT_HEAD(&s->events, entry, next); 535 } 536 } 537 } 538 } 539 540 static int usb_mtp_inotify_init(MTPState *s) 541 { 542 int fd; 543 544 fd = inotify_init1(IN_NONBLOCK); 545 if (fd == -1) { 546 return 1; 547 } 548 549 QTAILQ_INIT(&s->events); 550 s->inotifyfd = fd; 551 552 qemu_set_fd_handler(fd, inotify_watchfn, NULL, s); 553 554 return 0; 555 } 556 557 static void usb_mtp_inotify_cleanup(MTPState *s) 558 { 559 MTPMonEntry *e, *p; 560 561 if (!s->inotifyfd) { 562 return; 563 } 564 565 qemu_set_fd_handler(s->inotifyfd, NULL, NULL, s); 566 close(s->inotifyfd); 567 568 QTAILQ_FOREACH_SAFE(e, &s->events, next, p) { 569 QTAILQ_REMOVE(&s->events, e, next); 570 g_free(e); 571 } 572 } 573 574 static int usb_mtp_add_watch(int inotifyfd, char *path) 575 { 576 uint32_t mask = IN_CREATE | IN_DELETE | IN_MODIFY | 577 IN_ISDIR; 578 579 return inotify_add_watch(inotifyfd, path, mask); 580 } 581 #endif 582 583 static void usb_mtp_object_readdir(MTPState *s, MTPObject *o) 584 { 585 struct dirent *entry; 586 DIR *dir; 587 588 if (o->have_children) { 589 return; 590 } 591 o->have_children = true; 592 593 dir = opendir(o->path); 594 if (!dir) { 595 return; 596 } 597 #ifdef CONFIG_INOTIFY1 598 int watchfd = usb_mtp_add_watch(s->inotifyfd, o->path); 599 if (watchfd == -1) { 600 fprintf(stderr, "usb-mtp: failed to add watch for %s\n", o->path); 601 } else { 602 trace_usb_mtp_inotify_event(s->dev.addr, o->path, 603 0, "Watch Added"); 604 o->watchfd = watchfd; 605 } 606 #endif 607 while ((entry = readdir(dir)) != NULL) { 608 usb_mtp_add_child(s, o, entry->d_name); 609 } 610 closedir(dir); 611 } 612 613 /* ----------------------------------------------------------------------- */ 614 615 static MTPData *usb_mtp_data_alloc(MTPControl *c) 616 { 617 MTPData *data = g_new0(MTPData, 1); 618 619 data->code = c->code; 620 data->trans = c->trans; 621 data->fd = -1; 622 data->first = true; 623 return data; 624 } 625 626 static void usb_mtp_data_free(MTPData *data) 627 { 628 if (data == NULL) { 629 return; 630 } 631 if (data->fd != -1) { 632 close(data->fd); 633 } 634 g_free(data->data); 635 g_free(data); 636 } 637 638 static void usb_mtp_realloc(MTPData *data, uint32_t bytes) 639 { 640 if (data->length + bytes <= data->alloc) { 641 return; 642 } 643 data->alloc = (data->length + bytes + 0xff) & ~0xff; 644 data->data = g_realloc(data->data, data->alloc); 645 } 646 647 static void usb_mtp_add_u8(MTPData *data, uint8_t val) 648 { 649 usb_mtp_realloc(data, 1); 650 data->data[data->length++] = val; 651 } 652 653 static void usb_mtp_add_u16(MTPData *data, uint16_t val) 654 { 655 usb_mtp_realloc(data, 2); 656 data->data[data->length++] = (val >> 0) & 0xff; 657 data->data[data->length++] = (val >> 8) & 0xff; 658 } 659 660 static void usb_mtp_add_u32(MTPData *data, uint32_t val) 661 { 662 usb_mtp_realloc(data, 4); 663 data->data[data->length++] = (val >> 0) & 0xff; 664 data->data[data->length++] = (val >> 8) & 0xff; 665 data->data[data->length++] = (val >> 16) & 0xff; 666 data->data[data->length++] = (val >> 24) & 0xff; 667 } 668 669 static void usb_mtp_add_u64(MTPData *data, uint64_t val) 670 { 671 usb_mtp_realloc(data, 8); 672 data->data[data->length++] = (val >> 0) & 0xff; 673 data->data[data->length++] = (val >> 8) & 0xff; 674 data->data[data->length++] = (val >> 16) & 0xff; 675 data->data[data->length++] = (val >> 24) & 0xff; 676 data->data[data->length++] = (val >> 32) & 0xff; 677 data->data[data->length++] = (val >> 40) & 0xff; 678 data->data[data->length++] = (val >> 48) & 0xff; 679 data->data[data->length++] = (val >> 56) & 0xff; 680 } 681 682 static void usb_mtp_add_u16_array(MTPData *data, uint32_t len, 683 const uint16_t *vals) 684 { 685 int i; 686 687 usb_mtp_add_u32(data, len); 688 for (i = 0; i < len; i++) { 689 usb_mtp_add_u16(data, vals[i]); 690 } 691 } 692 693 static void usb_mtp_add_u32_array(MTPData *data, uint32_t len, 694 const uint32_t *vals) 695 { 696 int i; 697 698 usb_mtp_add_u32(data, len); 699 for (i = 0; i < len; i++) { 700 usb_mtp_add_u32(data, vals[i]); 701 } 702 } 703 704 static void usb_mtp_add_wstr(MTPData *data, const wchar_t *str) 705 { 706 uint32_t len = wcslen(str); 707 int i; 708 709 if (len > 0) { 710 len++; /* include terminating L'\0' */ 711 } 712 713 usb_mtp_add_u8(data, len); 714 for (i = 0; i < len; i++) { 715 usb_mtp_add_u16(data, str[i]); 716 } 717 } 718 719 static void usb_mtp_add_str(MTPData *data, const char *str) 720 { 721 uint32_t len = strlen(str)+1; 722 wchar_t *wstr = g_new(wchar_t, len); 723 size_t ret; 724 725 ret = mbstowcs(wstr, str, len); 726 if (ret == -1) { 727 usb_mtp_add_wstr(data, L"Oops"); 728 } else { 729 usb_mtp_add_wstr(data, wstr); 730 } 731 732 g_free(wstr); 733 } 734 735 static void usb_mtp_add_time(MTPData *data, time_t time) 736 { 737 char buf[16]; 738 struct tm tm; 739 740 gmtime_r(&time, &tm); 741 strftime(buf, sizeof(buf), "%Y%m%dT%H%M%S", &tm); 742 usb_mtp_add_str(data, buf); 743 } 744 745 /* ----------------------------------------------------------------------- */ 746 747 static void usb_mtp_queue_result(MTPState *s, uint16_t code, uint32_t trans, 748 int argc, uint32_t arg0, uint32_t arg1) 749 { 750 MTPControl *c = g_new0(MTPControl, 1); 751 752 c->code = code; 753 c->trans = trans; 754 c->argc = argc; 755 if (argc > 0) { 756 c->argv[0] = arg0; 757 } 758 if (argc > 1) { 759 c->argv[1] = arg1; 760 } 761 762 assert(s->result == NULL); 763 s->result = c; 764 } 765 766 /* ----------------------------------------------------------------------- */ 767 768 static MTPData *usb_mtp_get_device_info(MTPState *s, MTPControl *c) 769 { 770 static const uint16_t ops[] = { 771 CMD_GET_DEVICE_INFO, 772 CMD_OPEN_SESSION, 773 CMD_CLOSE_SESSION, 774 CMD_GET_STORAGE_IDS, 775 CMD_GET_STORAGE_INFO, 776 CMD_GET_NUM_OBJECTS, 777 CMD_GET_OBJECT_HANDLES, 778 CMD_GET_OBJECT_INFO, 779 CMD_GET_OBJECT, 780 CMD_GET_PARTIAL_OBJECT, 781 }; 782 static const uint16_t fmt[] = { 783 FMT_UNDEFINED_OBJECT, 784 FMT_ASSOCIATION, 785 }; 786 MTPData *d = usb_mtp_data_alloc(c); 787 788 trace_usb_mtp_op_get_device_info(s->dev.addr); 789 790 usb_mtp_add_u16(d, 100); 791 usb_mtp_add_u32(d, 0x00000006); 792 usb_mtp_add_u16(d, 0x0064); 793 usb_mtp_add_wstr(d, L""); 794 usb_mtp_add_u16(d, 0x0000); 795 796 usb_mtp_add_u16_array(d, ARRAY_SIZE(ops), ops); 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, 0, NULL); 800 usb_mtp_add_u16_array(d, ARRAY_SIZE(fmt), fmt); 801 802 usb_mtp_add_wstr(d, L"" MTP_MANUFACTURER); 803 usb_mtp_add_wstr(d, L"" MTP_PRODUCT); 804 usb_mtp_add_wstr(d, L"0.1"); 805 usb_mtp_add_wstr(d, L"0123456789abcdef0123456789abcdef"); 806 807 return d; 808 } 809 810 static MTPData *usb_mtp_get_storage_ids(MTPState *s, MTPControl *c) 811 { 812 static const uint32_t ids[] = { 813 QEMU_STORAGE_ID, 814 }; 815 MTPData *d = usb_mtp_data_alloc(c); 816 817 trace_usb_mtp_op_get_storage_ids(s->dev.addr); 818 819 usb_mtp_add_u32_array(d, ARRAY_SIZE(ids), ids); 820 821 return d; 822 } 823 824 static MTPData *usb_mtp_get_storage_info(MTPState *s, MTPControl *c) 825 { 826 MTPData *d = usb_mtp_data_alloc(c); 827 struct statvfs buf; 828 int rc; 829 830 trace_usb_mtp_op_get_storage_info(s->dev.addr); 831 832 if (FLAG_SET(s, MTP_FLAG_WRITABLE)) { 833 usb_mtp_add_u16(d, 0x0003); 834 usb_mtp_add_u16(d, 0x0002); 835 usb_mtp_add_u16(d, 0x0000); 836 } else { 837 usb_mtp_add_u16(d, 0x0001); 838 usb_mtp_add_u16(d, 0x0002); 839 usb_mtp_add_u16(d, 0x0001); 840 } 841 842 rc = statvfs(s->root, &buf); 843 if (rc == 0) { 844 usb_mtp_add_u64(d, (uint64_t)buf.f_frsize * buf.f_blocks); 845 usb_mtp_add_u64(d, (uint64_t)buf.f_bavail * buf.f_blocks); 846 usb_mtp_add_u32(d, buf.f_ffree); 847 } else { 848 usb_mtp_add_u64(d, 0xffffffff); 849 usb_mtp_add_u64(d, 0xffffffff); 850 usb_mtp_add_u32(d, 0xffffffff); 851 } 852 853 usb_mtp_add_str(d, s->desc); 854 usb_mtp_add_wstr(d, L"123456789abcdef"); 855 return d; 856 } 857 858 static MTPData *usb_mtp_get_object_handles(MTPState *s, MTPControl *c, 859 MTPObject *o) 860 { 861 MTPData *d = usb_mtp_data_alloc(c); 862 uint32_t i = 0, handles[o->nchildren]; 863 MTPObject *iter; 864 865 trace_usb_mtp_op_get_object_handles(s->dev.addr, o->handle, o->path); 866 867 QLIST_FOREACH(iter, &o->children, list) { 868 handles[i++] = iter->handle; 869 } 870 assert(i == o->nchildren); 871 usb_mtp_add_u32_array(d, o->nchildren, handles); 872 873 return d; 874 } 875 876 static MTPData *usb_mtp_get_object_info(MTPState *s, MTPControl *c, 877 MTPObject *o) 878 { 879 MTPData *d = usb_mtp_data_alloc(c); 880 881 trace_usb_mtp_op_get_object_info(s->dev.addr, o->handle, o->path); 882 883 usb_mtp_add_u32(d, QEMU_STORAGE_ID); 884 usb_mtp_add_u16(d, o->format); 885 usb_mtp_add_u16(d, 0); 886 usb_mtp_add_u32(d, o->stat.st_size); 887 888 usb_mtp_add_u16(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 usb_mtp_add_u32(d, 0); 895 896 if (o->parent) { 897 usb_mtp_add_u32(d, o->parent->handle); 898 } else { 899 usb_mtp_add_u32(d, 0); 900 } 901 if (o->format == FMT_ASSOCIATION) { 902 usb_mtp_add_u16(d, 0x0001); 903 usb_mtp_add_u32(d, 0x00000001); 904 usb_mtp_add_u32(d, 0); 905 } else { 906 usb_mtp_add_u16(d, 0); 907 usb_mtp_add_u32(d, 0); 908 usb_mtp_add_u32(d, 0); 909 } 910 911 usb_mtp_add_str(d, o->name); 912 usb_mtp_add_time(d, o->stat.st_ctime); 913 usb_mtp_add_time(d, o->stat.st_mtime); 914 usb_mtp_add_wstr(d, L""); 915 916 return d; 917 } 918 919 static MTPData *usb_mtp_get_object(MTPState *s, MTPControl *c, 920 MTPObject *o) 921 { 922 MTPData *d = usb_mtp_data_alloc(c); 923 924 trace_usb_mtp_op_get_object(s->dev.addr, o->handle, o->path); 925 926 d->fd = open(o->path, O_RDONLY); 927 if (d->fd == -1) { 928 usb_mtp_data_free(d); 929 return NULL; 930 } 931 d->length = o->stat.st_size; 932 d->alloc = 512; 933 d->data = g_malloc(d->alloc); 934 return d; 935 } 936 937 static MTPData *usb_mtp_get_partial_object(MTPState *s, MTPControl *c, 938 MTPObject *o) 939 { 940 MTPData *d = usb_mtp_data_alloc(c); 941 off_t offset; 942 943 trace_usb_mtp_op_get_partial_object(s->dev.addr, o->handle, o->path, 944 c->argv[1], c->argv[2]); 945 946 d->fd = open(o->path, O_RDONLY); 947 if (d->fd == -1) { 948 usb_mtp_data_free(d); 949 return NULL; 950 } 951 952 offset = c->argv[1]; 953 if (offset > o->stat.st_size) { 954 offset = o->stat.st_size; 955 } 956 if (lseek(d->fd, offset, SEEK_SET) < 0) { 957 usb_mtp_data_free(d); 958 return NULL; 959 } 960 961 d->length = c->argv[2]; 962 if (d->length > o->stat.st_size - offset) { 963 d->length = o->stat.st_size - offset; 964 } 965 966 return d; 967 } 968 969 static void usb_mtp_command(MTPState *s, MTPControl *c) 970 { 971 MTPData *data_in = NULL; 972 MTPObject *o; 973 uint32_t nres = 0, res0 = 0; 974 975 /* sanity checks */ 976 if (c->code >= CMD_CLOSE_SESSION && s->session == 0) { 977 usb_mtp_queue_result(s, RES_SESSION_NOT_OPEN, 978 c->trans, 0, 0, 0); 979 return; 980 } 981 982 /* process commands */ 983 switch (c->code) { 984 case CMD_GET_DEVICE_INFO: 985 data_in = usb_mtp_get_device_info(s, c); 986 break; 987 case CMD_OPEN_SESSION: 988 if (s->session) { 989 usb_mtp_queue_result(s, RES_SESSION_ALREADY_OPEN, 990 c->trans, 1, s->session, 0); 991 return; 992 } 993 if (c->argv[0] == 0) { 994 usb_mtp_queue_result(s, RES_INVALID_PARAMETER, 995 c->trans, 0, 0, 0); 996 return; 997 } 998 trace_usb_mtp_op_open_session(s->dev.addr); 999 s->session = c->argv[0]; 1000 usb_mtp_object_alloc(s, s->next_handle++, NULL, s->root); 1001 #ifdef CONFIG_INOTIFY1 1002 if (usb_mtp_inotify_init(s)) { 1003 fprintf(stderr, "usb-mtp: file monitoring init failed\n"); 1004 } 1005 #endif 1006 break; 1007 case CMD_CLOSE_SESSION: 1008 trace_usb_mtp_op_close_session(s->dev.addr); 1009 s->session = 0; 1010 s->next_handle = 0; 1011 #ifdef CONFIG_INOTIFY1 1012 usb_mtp_inotify_cleanup(s); 1013 #endif 1014 usb_mtp_object_free(s, QTAILQ_FIRST(&s->objects)); 1015 assert(QTAILQ_EMPTY(&s->objects)); 1016 break; 1017 case CMD_GET_STORAGE_IDS: 1018 data_in = usb_mtp_get_storage_ids(s, c); 1019 break; 1020 case CMD_GET_STORAGE_INFO: 1021 if (c->argv[0] != QEMU_STORAGE_ID && 1022 c->argv[0] != 0xffffffff) { 1023 usb_mtp_queue_result(s, RES_INVALID_STORAGE_ID, 1024 c->trans, 0, 0, 0); 1025 return; 1026 } 1027 data_in = usb_mtp_get_storage_info(s, c); 1028 break; 1029 case CMD_GET_NUM_OBJECTS: 1030 case CMD_GET_OBJECT_HANDLES: 1031 if (c->argv[0] != QEMU_STORAGE_ID && 1032 c->argv[0] != 0xffffffff) { 1033 usb_mtp_queue_result(s, RES_INVALID_STORAGE_ID, 1034 c->trans, 0, 0, 0); 1035 return; 1036 } 1037 if (c->argv[1] != 0x00000000) { 1038 usb_mtp_queue_result(s, RES_SPEC_BY_FORMAT_UNSUPPORTED, 1039 c->trans, 0, 0, 0); 1040 return; 1041 } 1042 if (c->argv[2] == 0x00000000 || 1043 c->argv[2] == 0xffffffff) { 1044 o = QTAILQ_FIRST(&s->objects); 1045 } else { 1046 o = usb_mtp_object_lookup(s, c->argv[2]); 1047 } 1048 if (o == NULL) { 1049 usb_mtp_queue_result(s, RES_INVALID_OBJECT_HANDLE, 1050 c->trans, 0, 0, 0); 1051 return; 1052 } 1053 if (o->format != FMT_ASSOCIATION) { 1054 usb_mtp_queue_result(s, RES_INVALID_PARENT_OBJECT, 1055 c->trans, 0, 0, 0); 1056 return; 1057 } 1058 usb_mtp_object_readdir(s, o); 1059 if (c->code == CMD_GET_NUM_OBJECTS) { 1060 trace_usb_mtp_op_get_num_objects(s->dev.addr, o->handle, o->path); 1061 nres = 1; 1062 res0 = o->nchildren; 1063 } else { 1064 data_in = usb_mtp_get_object_handles(s, c, o); 1065 } 1066 break; 1067 case CMD_GET_OBJECT_INFO: 1068 o = usb_mtp_object_lookup(s, c->argv[0]); 1069 if (o == NULL) { 1070 usb_mtp_queue_result(s, RES_INVALID_OBJECT_HANDLE, 1071 c->trans, 0, 0, 0); 1072 return; 1073 } 1074 data_in = usb_mtp_get_object_info(s, c, o); 1075 break; 1076 case CMD_GET_OBJECT: 1077 o = usb_mtp_object_lookup(s, c->argv[0]); 1078 if (o == NULL) { 1079 usb_mtp_queue_result(s, RES_INVALID_OBJECT_HANDLE, 1080 c->trans, 0, 0, 0); 1081 return; 1082 } 1083 if (o->format == FMT_ASSOCIATION) { 1084 usb_mtp_queue_result(s, RES_INVALID_OBJECT_HANDLE, 1085 c->trans, 0, 0, 0); 1086 return; 1087 } 1088 data_in = usb_mtp_get_object(s, c, o); 1089 if (data_in == NULL) { 1090 usb_mtp_queue_result(s, RES_GENERAL_ERROR, 1091 c->trans, 0, 0, 0); 1092 return; 1093 } 1094 break; 1095 case CMD_GET_PARTIAL_OBJECT: 1096 o = usb_mtp_object_lookup(s, c->argv[0]); 1097 if (o == NULL) { 1098 usb_mtp_queue_result(s, RES_INVALID_OBJECT_HANDLE, 1099 c->trans, 0, 0, 0); 1100 return; 1101 } 1102 if (o->format == FMT_ASSOCIATION) { 1103 usb_mtp_queue_result(s, RES_INVALID_OBJECT_HANDLE, 1104 c->trans, 0, 0, 0); 1105 return; 1106 } 1107 data_in = usb_mtp_get_partial_object(s, c, o); 1108 if (data_in == NULL) { 1109 usb_mtp_queue_result(s, RES_GENERAL_ERROR, 1110 c->trans, 0, 0, 0); 1111 return; 1112 } 1113 nres = 1; 1114 res0 = data_in->length; 1115 break; 1116 default: 1117 trace_usb_mtp_op_unknown(s->dev.addr, c->code); 1118 usb_mtp_queue_result(s, RES_OPERATION_NOT_SUPPORTED, 1119 c->trans, 0, 0, 0); 1120 return; 1121 } 1122 1123 /* return results on success */ 1124 if (data_in) { 1125 assert(s->data_in == NULL); 1126 s->data_in = data_in; 1127 } 1128 usb_mtp_queue_result(s, RES_OK, c->trans, nres, res0, 0); 1129 } 1130 1131 /* ----------------------------------------------------------------------- */ 1132 1133 static void usb_mtp_handle_reset(USBDevice *dev) 1134 { 1135 MTPState *s = USB_MTP(dev); 1136 1137 trace_usb_mtp_reset(s->dev.addr); 1138 1139 #ifdef CONFIG_INOTIFY1 1140 usb_mtp_inotify_cleanup(s); 1141 #endif 1142 usb_mtp_object_free(s, QTAILQ_FIRST(&s->objects)); 1143 s->session = 0; 1144 usb_mtp_data_free(s->data_in); 1145 s->data_in = NULL; 1146 usb_mtp_data_free(s->data_out); 1147 s->data_out = NULL; 1148 g_free(s->result); 1149 s->result = NULL; 1150 } 1151 1152 static void usb_mtp_handle_control(USBDevice *dev, USBPacket *p, 1153 int request, int value, int index, 1154 int length, uint8_t *data) 1155 { 1156 int ret; 1157 1158 ret = usb_desc_handle_control(dev, p, request, value, index, length, data); 1159 if (ret >= 0) { 1160 return; 1161 } 1162 1163 trace_usb_mtp_stall(dev->addr, "unknown control request"); 1164 p->status = USB_RET_STALL; 1165 } 1166 1167 static void usb_mtp_cancel_packet(USBDevice *dev, USBPacket *p) 1168 { 1169 /* we don't use async packets, so this should never be called */ 1170 fprintf(stderr, "%s\n", __func__); 1171 } 1172 1173 static void usb_mtp_handle_data(USBDevice *dev, USBPacket *p) 1174 { 1175 MTPState *s = USB_MTP(dev); 1176 MTPControl cmd; 1177 mtp_container container; 1178 uint32_t params[5]; 1179 int i, rc; 1180 1181 switch (p->ep->nr) { 1182 case EP_DATA_IN: 1183 if (s->data_out != NULL) { 1184 /* guest bug */ 1185 trace_usb_mtp_stall(s->dev.addr, "awaiting data-out"); 1186 p->status = USB_RET_STALL; 1187 return; 1188 } 1189 if (p->iov.size < sizeof(container)) { 1190 trace_usb_mtp_stall(s->dev.addr, "packet too small"); 1191 p->status = USB_RET_STALL; 1192 return; 1193 } 1194 if (s->data_in != NULL) { 1195 MTPData *d = s->data_in; 1196 int dlen = d->length - d->offset; 1197 if (d->first) { 1198 trace_usb_mtp_data_in(s->dev.addr, d->trans, d->length); 1199 container.length = cpu_to_le32(d->length + sizeof(container)); 1200 container.type = cpu_to_le16(TYPE_DATA); 1201 container.code = cpu_to_le16(d->code); 1202 container.trans = cpu_to_le32(d->trans); 1203 usb_packet_copy(p, &container, sizeof(container)); 1204 d->first = false; 1205 if (dlen > p->iov.size - sizeof(container)) { 1206 dlen = p->iov.size - sizeof(container); 1207 } 1208 } else { 1209 if (dlen > p->iov.size) { 1210 dlen = p->iov.size; 1211 } 1212 } 1213 if (d->fd == -1) { 1214 usb_packet_copy(p, d->data + d->offset, dlen); 1215 } else { 1216 if (d->alloc < p->iov.size) { 1217 d->alloc = p->iov.size; 1218 d->data = g_realloc(d->data, d->alloc); 1219 } 1220 rc = read(d->fd, d->data, dlen); 1221 if (rc != dlen) { 1222 memset(d->data, 0, dlen); 1223 s->result->code = RES_INCOMPLETE_TRANSFER; 1224 } 1225 usb_packet_copy(p, d->data, dlen); 1226 } 1227 d->offset += dlen; 1228 if (d->offset == d->length) { 1229 usb_mtp_data_free(s->data_in); 1230 s->data_in = NULL; 1231 } 1232 } else if (s->result != NULL) { 1233 MTPControl *r = s->result; 1234 int length = sizeof(container) + r->argc * sizeof(uint32_t); 1235 if (r->code == RES_OK) { 1236 trace_usb_mtp_success(s->dev.addr, r->trans, 1237 (r->argc > 0) ? r->argv[0] : 0, 1238 (r->argc > 1) ? r->argv[1] : 0); 1239 } else { 1240 trace_usb_mtp_error(s->dev.addr, r->code, r->trans, 1241 (r->argc > 0) ? r->argv[0] : 0, 1242 (r->argc > 1) ? r->argv[1] : 0); 1243 } 1244 container.length = cpu_to_le32(length); 1245 container.type = cpu_to_le16(TYPE_RESPONSE); 1246 container.code = cpu_to_le16(r->code); 1247 container.trans = cpu_to_le32(r->trans); 1248 for (i = 0; i < r->argc; i++) { 1249 params[i] = cpu_to_le32(r->argv[i]); 1250 } 1251 usb_packet_copy(p, &container, sizeof(container)); 1252 usb_packet_copy(p, ¶ms, length - sizeof(container)); 1253 g_free(s->result); 1254 s->result = NULL; 1255 } 1256 break; 1257 case EP_DATA_OUT: 1258 if (p->iov.size < sizeof(container)) { 1259 trace_usb_mtp_stall(s->dev.addr, "packet too small"); 1260 p->status = USB_RET_STALL; 1261 return; 1262 } 1263 usb_packet_copy(p, &container, sizeof(container)); 1264 switch (le16_to_cpu(container.type)) { 1265 case TYPE_COMMAND: 1266 if (s->data_in || s->data_out || s->result) { 1267 trace_usb_mtp_stall(s->dev.addr, "transaction inflight"); 1268 p->status = USB_RET_STALL; 1269 return; 1270 } 1271 cmd.code = le16_to_cpu(container.code); 1272 cmd.argc = (le32_to_cpu(container.length) - sizeof(container)) 1273 / sizeof(uint32_t); 1274 cmd.trans = le32_to_cpu(container.trans); 1275 if (cmd.argc > ARRAY_SIZE(cmd.argv)) { 1276 cmd.argc = ARRAY_SIZE(cmd.argv); 1277 } 1278 if (p->iov.size < sizeof(container) + cmd.argc * sizeof(uint32_t)) { 1279 trace_usb_mtp_stall(s->dev.addr, "packet too small"); 1280 p->status = USB_RET_STALL; 1281 return; 1282 } 1283 usb_packet_copy(p, ¶ms, cmd.argc * sizeof(uint32_t)); 1284 for (i = 0; i < cmd.argc; i++) { 1285 cmd.argv[i] = le32_to_cpu(params[i]); 1286 } 1287 trace_usb_mtp_command(s->dev.addr, cmd.code, cmd.trans, 1288 (cmd.argc > 0) ? cmd.argv[0] : 0, 1289 (cmd.argc > 1) ? cmd.argv[1] : 0, 1290 (cmd.argc > 2) ? cmd.argv[2] : 0, 1291 (cmd.argc > 3) ? cmd.argv[3] : 0, 1292 (cmd.argc > 4) ? cmd.argv[4] : 0); 1293 usb_mtp_command(s, &cmd); 1294 break; 1295 default: 1296 /* not needed as long as the mtp device is read-only */ 1297 p->status = USB_RET_STALL; 1298 return; 1299 } 1300 break; 1301 case EP_EVENT: 1302 #ifdef CONFIG_INOTIFY1 1303 if (!QTAILQ_EMPTY(&s->events)) { 1304 struct MTPMonEntry *e = QTAILQ_LAST(&s->events, events); 1305 uint32_t handle; 1306 int len = sizeof(container) + sizeof(uint32_t); 1307 1308 if (p->iov.size < len) { 1309 trace_usb_mtp_stall(s->dev.addr, 1310 "packet too small to send event"); 1311 p->status = USB_RET_STALL; 1312 return; 1313 } 1314 1315 QTAILQ_REMOVE(&s->events, e, next); 1316 container.length = cpu_to_le32(len); 1317 container.type = cpu_to_le32(TYPE_EVENT); 1318 container.code = cpu_to_le16(e->event); 1319 container.trans = 0; /* no trans specific events */ 1320 handle = cpu_to_le32(e->handle); 1321 usb_packet_copy(p, &container, sizeof(container)); 1322 usb_packet_copy(p, &handle, sizeof(uint32_t)); 1323 g_free(e); 1324 return; 1325 } 1326 #endif 1327 p->status = USB_RET_NAK; 1328 return; 1329 default: 1330 trace_usb_mtp_stall(s->dev.addr, "invalid endpoint"); 1331 p->status = USB_RET_STALL; 1332 return; 1333 } 1334 1335 if (p->actual_length == 0) { 1336 trace_usb_mtp_nak(s->dev.addr, p->ep->nr); 1337 p->status = USB_RET_NAK; 1338 return; 1339 } else { 1340 trace_usb_mtp_xfer(s->dev.addr, p->ep->nr, p->actual_length, 1341 p->iov.size); 1342 return; 1343 } 1344 } 1345 1346 static void usb_mtp_realize(USBDevice *dev, Error **errp) 1347 { 1348 MTPState *s = USB_MTP(dev); 1349 1350 usb_desc_create_serial(dev); 1351 usb_desc_init(dev); 1352 QTAILQ_INIT(&s->objects); 1353 if (s->desc == NULL) { 1354 if (s->root == NULL) { 1355 error_setg(errp, "usb-mtp: x-root property must be configured"); 1356 return; 1357 } 1358 s->desc = strrchr(s->root, '/'); 1359 if (s->desc && s->desc[0]) { 1360 s->desc = g_strdup(s->desc + 1); 1361 } else { 1362 s->desc = g_strdup("none"); 1363 } 1364 } 1365 } 1366 1367 static const VMStateDescription vmstate_usb_mtp = { 1368 .name = "usb-mtp", 1369 .unmigratable = 1, 1370 .version_id = 1, 1371 .minimum_version_id = 1, 1372 .fields = (VMStateField[]) { 1373 VMSTATE_USB_DEVICE(dev, MTPState), 1374 VMSTATE_END_OF_LIST() 1375 } 1376 }; 1377 1378 static Property mtp_properties[] = { 1379 DEFINE_PROP_STRING("x-root", MTPState, root), 1380 DEFINE_PROP_STRING("desc", MTPState, desc), 1381 DEFINE_PROP_END_OF_LIST(), 1382 }; 1383 1384 static void usb_mtp_class_initfn(ObjectClass *klass, void *data) 1385 { 1386 DeviceClass *dc = DEVICE_CLASS(klass); 1387 USBDeviceClass *uc = USB_DEVICE_CLASS(klass); 1388 1389 uc->realize = usb_mtp_realize; 1390 uc->product_desc = "QEMU USB MTP"; 1391 uc->usb_desc = &desc; 1392 uc->cancel_packet = usb_mtp_cancel_packet; 1393 uc->handle_attach = usb_desc_attach; 1394 uc->handle_reset = usb_mtp_handle_reset; 1395 uc->handle_control = usb_mtp_handle_control; 1396 uc->handle_data = usb_mtp_handle_data; 1397 dc->fw_name = "mtp"; 1398 dc->vmsd = &vmstate_usb_mtp; 1399 dc->props = mtp_properties; 1400 } 1401 1402 static TypeInfo mtp_info = { 1403 .name = TYPE_USB_MTP, 1404 .parent = TYPE_USB_DEVICE, 1405 .instance_size = sizeof(MTPState), 1406 .class_init = usb_mtp_class_initfn, 1407 }; 1408 1409 static void usb_mtp_register_types(void) 1410 { 1411 type_register_static(&mtp_info); 1412 } 1413 1414 type_init(usb_mtp_register_types) 1415