1 /* 2 * QEMU Guest Agent win32-specific command implementations 3 * 4 * Copyright IBM Corp. 2012 5 * 6 * Authors: 7 * Michael Roth <mdroth@linux.vnet.ibm.com> 8 * Gal Hammer <ghammer@redhat.com> 9 * 10 * This work is licensed under the terms of the GNU GPL, version 2 or later. 11 * See the COPYING file in the top-level directory. 12 */ 13 #include "qemu/osdep.h" 14 15 #include <wtypes.h> 16 #include <powrprof.h> 17 #include <winsock2.h> 18 #include <ws2tcpip.h> 19 #include <iptypes.h> 20 #include <iphlpapi.h> 21 #ifdef CONFIG_QGA_NTDDSCSI 22 #include <winioctl.h> 23 #include <ntddscsi.h> 24 #endif 25 #include <setupapi.h> 26 #include <cfgmgr32.h> 27 #include <initguid.h> 28 #include <devpropdef.h> 29 #include <lm.h> 30 #include <wtsapi32.h> 31 #include <wininet.h> 32 33 #include "guest-agent-core.h" 34 #include "vss-win32.h" 35 #include "qga-qapi-commands.h" 36 #include "qapi/error.h" 37 #include "qapi/qmp/qerror.h" 38 #include "qemu/queue.h" 39 #include "qemu/host-utils.h" 40 #include "qemu/base64.h" 41 #include "commands-common.h" 42 43 /* 44 * The following should be in devpkey.h, but it isn't. The key names were 45 * prefixed to avoid (future) name clashes. Once the definitions get into 46 * mingw the following lines can be removed. 47 */ 48 DEFINE_DEVPROPKEY(qga_DEVPKEY_NAME, 0xb725f130, 0x47ef, 0x101a, 0xa5, 49 0xf1, 0x02, 0x60, 0x8c, 0x9e, 0xeb, 0xac, 10); 50 /* DEVPROP_TYPE_STRING */ 51 DEFINE_DEVPROPKEY(qga_DEVPKEY_Device_HardwareIds, 0xa45c254e, 0xdf1c, 52 0x4efd, 0x80, 0x20, 0x67, 0xd1, 0x46, 0xa8, 0x50, 0xe0, 3); 53 /* DEVPROP_TYPE_STRING_LIST */ 54 DEFINE_DEVPROPKEY(qga_DEVPKEY_Device_DriverDate, 0xa8b865dd, 0x2e3d, 55 0x4094, 0xad, 0x97, 0xe5, 0x93, 0xa7, 0xc, 0x75, 0xd6, 2); 56 /* DEVPROP_TYPE_FILETIME */ 57 DEFINE_DEVPROPKEY(qga_DEVPKEY_Device_DriverVersion, 0xa8b865dd, 0x2e3d, 58 0x4094, 0xad, 0x97, 0xe5, 0x93, 0xa7, 0xc, 0x75, 0xd6, 3); 59 /* DEVPROP_TYPE_STRING */ 60 /* The CM_Get_DevNode_PropertyW prototype is only sometimes in cfgmgr32.h */ 61 #ifndef CM_Get_DevNode_Property 62 #pragma GCC diagnostic push 63 #pragma GCC diagnostic ignored "-Wredundant-decls" 64 CMAPI CONFIGRET WINAPI CM_Get_DevNode_PropertyW( 65 DEVINST dnDevInst, 66 CONST DEVPROPKEY * PropertyKey, 67 DEVPROPTYPE * PropertyType, 68 PBYTE PropertyBuffer, 69 PULONG PropertyBufferSize, 70 ULONG ulFlags 71 ); 72 #define CM_Get_DevNode_Property CM_Get_DevNode_PropertyW 73 #pragma GCC diagnostic pop 74 #endif 75 76 #ifndef SHTDN_REASON_FLAG_PLANNED 77 #define SHTDN_REASON_FLAG_PLANNED 0x80000000 78 #endif 79 80 /* multiple of 100 nanoseconds elapsed between windows baseline 81 * (1/1/1601) and Unix Epoch (1/1/1970), accounting for leap years */ 82 #define W32_FT_OFFSET (10000000ULL * 60 * 60 * 24 * \ 83 (365 * (1970 - 1601) + \ 84 (1970 - 1601) / 4 - 3)) 85 86 #define INVALID_SET_FILE_POINTER ((DWORD)-1) 87 88 struct GuestFileHandle { 89 int64_t id; 90 HANDLE fh; 91 QTAILQ_ENTRY(GuestFileHandle) next; 92 }; 93 94 static struct { 95 QTAILQ_HEAD(, GuestFileHandle) filehandles; 96 } guest_file_state = { 97 .filehandles = QTAILQ_HEAD_INITIALIZER(guest_file_state.filehandles), 98 }; 99 100 #define FILE_GENERIC_APPEND (FILE_GENERIC_WRITE & ~FILE_WRITE_DATA) 101 102 typedef struct OpenFlags { 103 const char *forms; 104 DWORD desired_access; 105 DWORD creation_disposition; 106 } OpenFlags; 107 static OpenFlags guest_file_open_modes[] = { 108 {"r", GENERIC_READ, OPEN_EXISTING}, 109 {"rb", GENERIC_READ, OPEN_EXISTING}, 110 {"w", GENERIC_WRITE, CREATE_ALWAYS}, 111 {"wb", GENERIC_WRITE, CREATE_ALWAYS}, 112 {"a", FILE_GENERIC_APPEND, OPEN_ALWAYS }, 113 {"r+", GENERIC_WRITE|GENERIC_READ, OPEN_EXISTING}, 114 {"rb+", GENERIC_WRITE|GENERIC_READ, OPEN_EXISTING}, 115 {"r+b", GENERIC_WRITE|GENERIC_READ, OPEN_EXISTING}, 116 {"w+", GENERIC_WRITE|GENERIC_READ, CREATE_ALWAYS}, 117 {"wb+", GENERIC_WRITE|GENERIC_READ, CREATE_ALWAYS}, 118 {"w+b", GENERIC_WRITE|GENERIC_READ, CREATE_ALWAYS}, 119 {"a+", FILE_GENERIC_APPEND|GENERIC_READ, OPEN_ALWAYS }, 120 {"ab+", FILE_GENERIC_APPEND|GENERIC_READ, OPEN_ALWAYS }, 121 {"a+b", FILE_GENERIC_APPEND|GENERIC_READ, OPEN_ALWAYS } 122 }; 123 124 #define debug_error(msg) do { \ 125 char *suffix = g_win32_error_message(GetLastError()); \ 126 g_debug("%s: %s", (msg), suffix); \ 127 g_free(suffix); \ 128 } while (0) 129 130 static OpenFlags *find_open_flag(const char *mode_str) 131 { 132 int mode; 133 Error **errp = NULL; 134 135 for (mode = 0; mode < ARRAY_SIZE(guest_file_open_modes); ++mode) { 136 OpenFlags *flags = guest_file_open_modes + mode; 137 138 if (strcmp(flags->forms, mode_str) == 0) { 139 return flags; 140 } 141 } 142 143 error_setg(errp, "invalid file open mode '%s'", mode_str); 144 return NULL; 145 } 146 147 static int64_t guest_file_handle_add(HANDLE fh, Error **errp) 148 { 149 GuestFileHandle *gfh; 150 int64_t handle; 151 152 handle = ga_get_fd_handle(ga_state, errp); 153 if (handle < 0) { 154 return -1; 155 } 156 gfh = g_new0(GuestFileHandle, 1); 157 gfh->id = handle; 158 gfh->fh = fh; 159 QTAILQ_INSERT_TAIL(&guest_file_state.filehandles, gfh, next); 160 161 return handle; 162 } 163 164 GuestFileHandle *guest_file_handle_find(int64_t id, Error **errp) 165 { 166 GuestFileHandle *gfh; 167 QTAILQ_FOREACH(gfh, &guest_file_state.filehandles, next) { 168 if (gfh->id == id) { 169 return gfh; 170 } 171 } 172 error_setg(errp, "handle '%" PRId64 "' has not been found", id); 173 return NULL; 174 } 175 176 static void handle_set_nonblocking(HANDLE fh) 177 { 178 DWORD file_type, pipe_state; 179 file_type = GetFileType(fh); 180 if (file_type != FILE_TYPE_PIPE) { 181 return; 182 } 183 /* If file_type == FILE_TYPE_PIPE, according to MSDN 184 * the specified file is socket or named pipe */ 185 if (!GetNamedPipeHandleState(fh, &pipe_state, NULL, 186 NULL, NULL, NULL, 0)) { 187 return; 188 } 189 /* The fd is named pipe fd */ 190 if (pipe_state & PIPE_NOWAIT) { 191 return; 192 } 193 194 pipe_state |= PIPE_NOWAIT; 195 SetNamedPipeHandleState(fh, &pipe_state, NULL, NULL); 196 } 197 198 int64_t qmp_guest_file_open(const char *path, bool has_mode, 199 const char *mode, Error **errp) 200 { 201 int64_t fd = -1; 202 HANDLE fh; 203 HANDLE templ_file = NULL; 204 DWORD share_mode = FILE_SHARE_READ; 205 DWORD flags_and_attr = FILE_ATTRIBUTE_NORMAL; 206 LPSECURITY_ATTRIBUTES sa_attr = NULL; 207 OpenFlags *guest_flags; 208 GError *gerr = NULL; 209 wchar_t *w_path = NULL; 210 211 if (!has_mode) { 212 mode = "r"; 213 } 214 slog("guest-file-open called, filepath: %s, mode: %s", path, mode); 215 guest_flags = find_open_flag(mode); 216 if (guest_flags == NULL) { 217 error_setg(errp, "invalid file open mode"); 218 goto done; 219 } 220 221 w_path = g_utf8_to_utf16(path, -1, NULL, NULL, &gerr); 222 if (!w_path) { 223 goto done; 224 } 225 226 fh = CreateFileW(w_path, guest_flags->desired_access, share_mode, sa_attr, 227 guest_flags->creation_disposition, flags_and_attr, 228 templ_file); 229 if (fh == INVALID_HANDLE_VALUE) { 230 error_setg_win32(errp, GetLastError(), "failed to open file '%s'", 231 path); 232 goto done; 233 } 234 235 /* set fd non-blocking to avoid common use cases (like reading from a 236 * named pipe) from hanging the agent 237 */ 238 handle_set_nonblocking(fh); 239 240 fd = guest_file_handle_add(fh, errp); 241 if (fd < 0) { 242 CloseHandle(fh); 243 error_setg(errp, "failed to add handle to qmp handle table"); 244 goto done; 245 } 246 247 slog("guest-file-open, handle: % " PRId64, fd); 248 249 done: 250 if (gerr) { 251 error_setg(errp, QERR_QGA_COMMAND_FAILED, gerr->message); 252 g_error_free(gerr); 253 } 254 g_free(w_path); 255 return fd; 256 } 257 258 void qmp_guest_file_close(int64_t handle, Error **errp) 259 { 260 bool ret; 261 GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 262 slog("guest-file-close called, handle: %" PRId64, handle); 263 if (gfh == NULL) { 264 return; 265 } 266 ret = CloseHandle(gfh->fh); 267 if (!ret) { 268 error_setg_win32(errp, GetLastError(), "failed close handle"); 269 return; 270 } 271 272 QTAILQ_REMOVE(&guest_file_state.filehandles, gfh, next); 273 g_free(gfh); 274 } 275 276 static void acquire_privilege(const char *name, Error **errp) 277 { 278 HANDLE token = NULL; 279 TOKEN_PRIVILEGES priv; 280 Error *local_err = NULL; 281 282 if (OpenProcessToken(GetCurrentProcess(), 283 TOKEN_ADJUST_PRIVILEGES|TOKEN_QUERY, &token)) 284 { 285 if (!LookupPrivilegeValue(NULL, name, &priv.Privileges[0].Luid)) { 286 error_setg(&local_err, QERR_QGA_COMMAND_FAILED, 287 "no luid for requested privilege"); 288 goto out; 289 } 290 291 priv.PrivilegeCount = 1; 292 priv.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED; 293 294 if (!AdjustTokenPrivileges(token, FALSE, &priv, 0, NULL, 0)) { 295 error_setg(&local_err, QERR_QGA_COMMAND_FAILED, 296 "unable to acquire requested privilege"); 297 goto out; 298 } 299 300 } else { 301 error_setg(&local_err, QERR_QGA_COMMAND_FAILED, 302 "failed to open privilege token"); 303 } 304 305 out: 306 if (token) { 307 CloseHandle(token); 308 } 309 error_propagate(errp, local_err); 310 } 311 312 static void execute_async(DWORD WINAPI (*func)(LPVOID), LPVOID opaque, 313 Error **errp) 314 { 315 HANDLE thread = CreateThread(NULL, 0, func, opaque, 0, NULL); 316 if (!thread) { 317 error_setg(errp, QERR_QGA_COMMAND_FAILED, 318 "failed to dispatch asynchronous command"); 319 } 320 } 321 322 void qmp_guest_shutdown(bool has_mode, const char *mode, Error **errp) 323 { 324 Error *local_err = NULL; 325 UINT shutdown_flag = EWX_FORCE; 326 327 slog("guest-shutdown called, mode: %s", mode); 328 329 if (!has_mode || strcmp(mode, "powerdown") == 0) { 330 shutdown_flag |= EWX_POWEROFF; 331 } else if (strcmp(mode, "halt") == 0) { 332 shutdown_flag |= EWX_SHUTDOWN; 333 } else if (strcmp(mode, "reboot") == 0) { 334 shutdown_flag |= EWX_REBOOT; 335 } else { 336 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "mode", 337 "'halt', 'powerdown', or 'reboot'"); 338 return; 339 } 340 341 /* Request a shutdown privilege, but try to shut down the system 342 anyway. */ 343 acquire_privilege(SE_SHUTDOWN_NAME, &local_err); 344 if (local_err) { 345 error_propagate(errp, local_err); 346 return; 347 } 348 349 if (!ExitWindowsEx(shutdown_flag, SHTDN_REASON_FLAG_PLANNED)) { 350 g_autofree gchar *emsg = g_win32_error_message(GetLastError()); 351 slog("guest-shutdown failed: %s", emsg); 352 error_setg_win32(errp, GetLastError(), "guest-shutdown failed"); 353 } 354 } 355 356 GuestFileRead *guest_file_read_unsafe(GuestFileHandle *gfh, 357 int64_t count, Error **errp) 358 { 359 GuestFileRead *read_data = NULL; 360 guchar *buf; 361 HANDLE fh = gfh->fh; 362 bool is_ok; 363 DWORD read_count; 364 365 buf = g_malloc0(count + 1); 366 is_ok = ReadFile(fh, buf, count, &read_count, NULL); 367 if (!is_ok) { 368 error_setg_win32(errp, GetLastError(), "failed to read file"); 369 } else { 370 buf[read_count] = 0; 371 read_data = g_new0(GuestFileRead, 1); 372 read_data->count = (size_t)read_count; 373 read_data->eof = read_count == 0; 374 375 if (read_count != 0) { 376 read_data->buf_b64 = g_base64_encode(buf, read_count); 377 } 378 } 379 g_free(buf); 380 381 return read_data; 382 } 383 384 GuestFileWrite *qmp_guest_file_write(int64_t handle, const char *buf_b64, 385 bool has_count, int64_t count, 386 Error **errp) 387 { 388 GuestFileWrite *write_data = NULL; 389 guchar *buf; 390 gsize buf_len; 391 bool is_ok; 392 DWORD write_count; 393 GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 394 HANDLE fh; 395 396 if (!gfh) { 397 return NULL; 398 } 399 fh = gfh->fh; 400 buf = qbase64_decode(buf_b64, -1, &buf_len, errp); 401 if (!buf) { 402 return NULL; 403 } 404 405 if (!has_count) { 406 count = buf_len; 407 } else if (count < 0 || count > buf_len) { 408 error_setg(errp, "value '%" PRId64 409 "' is invalid for argument count", count); 410 goto done; 411 } 412 413 is_ok = WriteFile(fh, buf, count, &write_count, NULL); 414 if (!is_ok) { 415 error_setg_win32(errp, GetLastError(), "failed to write to file"); 416 slog("guest-file-write-failed, handle: %" PRId64, handle); 417 } else { 418 write_data = g_new0(GuestFileWrite, 1); 419 write_data->count = (size_t) write_count; 420 } 421 422 done: 423 g_free(buf); 424 return write_data; 425 } 426 427 GuestFileSeek *qmp_guest_file_seek(int64_t handle, int64_t offset, 428 GuestFileWhence *whence_code, 429 Error **errp) 430 { 431 GuestFileHandle *gfh; 432 GuestFileSeek *seek_data; 433 HANDLE fh; 434 LARGE_INTEGER new_pos, off_pos; 435 off_pos.QuadPart = offset; 436 BOOL res; 437 int whence; 438 Error *err = NULL; 439 440 gfh = guest_file_handle_find(handle, errp); 441 if (!gfh) { 442 return NULL; 443 } 444 445 /* We stupidly exposed 'whence':'int' in our qapi */ 446 whence = ga_parse_whence(whence_code, &err); 447 if (err) { 448 error_propagate(errp, err); 449 return NULL; 450 } 451 452 fh = gfh->fh; 453 res = SetFilePointerEx(fh, off_pos, &new_pos, whence); 454 if (!res) { 455 error_setg_win32(errp, GetLastError(), "failed to seek file"); 456 return NULL; 457 } 458 seek_data = g_new0(GuestFileSeek, 1); 459 seek_data->position = new_pos.QuadPart; 460 return seek_data; 461 } 462 463 void qmp_guest_file_flush(int64_t handle, Error **errp) 464 { 465 HANDLE fh; 466 GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 467 if (!gfh) { 468 return; 469 } 470 471 fh = gfh->fh; 472 if (!FlushFileBuffers(fh)) { 473 error_setg_win32(errp, GetLastError(), "failed to flush file"); 474 } 475 } 476 477 #ifdef CONFIG_QGA_NTDDSCSI 478 479 static GuestDiskBusType win2qemu[] = { 480 [BusTypeUnknown] = GUEST_DISK_BUS_TYPE_UNKNOWN, 481 [BusTypeScsi] = GUEST_DISK_BUS_TYPE_SCSI, 482 [BusTypeAtapi] = GUEST_DISK_BUS_TYPE_IDE, 483 [BusTypeAta] = GUEST_DISK_BUS_TYPE_IDE, 484 [BusType1394] = GUEST_DISK_BUS_TYPE_IEEE1394, 485 [BusTypeSsa] = GUEST_DISK_BUS_TYPE_SSA, 486 [BusTypeFibre] = GUEST_DISK_BUS_TYPE_SSA, 487 [BusTypeUsb] = GUEST_DISK_BUS_TYPE_USB, 488 [BusTypeRAID] = GUEST_DISK_BUS_TYPE_RAID, 489 [BusTypeiScsi] = GUEST_DISK_BUS_TYPE_ISCSI, 490 [BusTypeSas] = GUEST_DISK_BUS_TYPE_SAS, 491 [BusTypeSata] = GUEST_DISK_BUS_TYPE_SATA, 492 [BusTypeSd] = GUEST_DISK_BUS_TYPE_SD, 493 [BusTypeMmc] = GUEST_DISK_BUS_TYPE_MMC, 494 #if (_WIN32_WINNT >= 0x0601) 495 [BusTypeVirtual] = GUEST_DISK_BUS_TYPE_VIRTUAL, 496 [BusTypeFileBackedVirtual] = GUEST_DISK_BUS_TYPE_FILE_BACKED_VIRTUAL, 497 #endif 498 }; 499 500 static GuestDiskBusType find_bus_type(STORAGE_BUS_TYPE bus) 501 { 502 if (bus >= ARRAY_SIZE(win2qemu) || (int)bus < 0) { 503 return GUEST_DISK_BUS_TYPE_UNKNOWN; 504 } 505 return win2qemu[(int)bus]; 506 } 507 508 DEFINE_GUID(GUID_DEVINTERFACE_DISK, 509 0x53f56307L, 0xb6bf, 0x11d0, 0x94, 0xf2, 510 0x00, 0xa0, 0xc9, 0x1e, 0xfb, 0x8b); 511 DEFINE_GUID(GUID_DEVINTERFACE_STORAGEPORT, 512 0x2accfe60L, 0xc130, 0x11d2, 0xb0, 0x82, 513 0x00, 0xa0, 0xc9, 0x1e, 0xfb, 0x8b); 514 515 static GuestPCIAddress *get_pci_info(int number, Error **errp) 516 { 517 HDEVINFO dev_info; 518 SP_DEVINFO_DATA dev_info_data; 519 SP_DEVICE_INTERFACE_DATA dev_iface_data; 520 HANDLE dev_file; 521 int i; 522 GuestPCIAddress *pci = NULL; 523 bool partial_pci = false; 524 525 pci = g_malloc0(sizeof(*pci)); 526 pci->domain = -1; 527 pci->slot = -1; 528 pci->function = -1; 529 pci->bus = -1; 530 531 dev_info = SetupDiGetClassDevs(&GUID_DEVINTERFACE_DISK, 0, 0, 532 DIGCF_PRESENT | DIGCF_DEVICEINTERFACE); 533 if (dev_info == INVALID_HANDLE_VALUE) { 534 error_setg_win32(errp, GetLastError(), "failed to get devices tree"); 535 goto out; 536 } 537 538 g_debug("enumerating devices"); 539 dev_info_data.cbSize = sizeof(SP_DEVINFO_DATA); 540 dev_iface_data.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA); 541 for (i = 0; SetupDiEnumDeviceInfo(dev_info, i, &dev_info_data); i++) { 542 PSP_DEVICE_INTERFACE_DETAIL_DATA pdev_iface_detail_data = NULL; 543 STORAGE_DEVICE_NUMBER sdn; 544 char *parent_dev_id = NULL; 545 HDEVINFO parent_dev_info; 546 SP_DEVINFO_DATA parent_dev_info_data; 547 DWORD j; 548 DWORD size = 0; 549 550 g_debug("getting device path"); 551 if (SetupDiEnumDeviceInterfaces(dev_info, &dev_info_data, 552 &GUID_DEVINTERFACE_DISK, 0, 553 &dev_iface_data)) { 554 while (!SetupDiGetDeviceInterfaceDetail(dev_info, &dev_iface_data, 555 pdev_iface_detail_data, 556 size, &size, 557 &dev_info_data)) { 558 if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) { 559 pdev_iface_detail_data = g_malloc(size); 560 pdev_iface_detail_data->cbSize = 561 sizeof(*pdev_iface_detail_data); 562 } else { 563 error_setg_win32(errp, GetLastError(), 564 "failed to get device interfaces"); 565 goto free_dev_info; 566 } 567 } 568 569 dev_file = CreateFile(pdev_iface_detail_data->DevicePath, 0, 570 FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 571 NULL); 572 g_free(pdev_iface_detail_data); 573 574 if (!DeviceIoControl(dev_file, IOCTL_STORAGE_GET_DEVICE_NUMBER, 575 NULL, 0, &sdn, sizeof(sdn), &size, NULL)) { 576 CloseHandle(dev_file); 577 error_setg_win32(errp, GetLastError(), 578 "failed to get device slot number"); 579 goto free_dev_info; 580 } 581 582 CloseHandle(dev_file); 583 if (sdn.DeviceNumber != number) { 584 continue; 585 } 586 } else { 587 error_setg_win32(errp, GetLastError(), 588 "failed to get device interfaces"); 589 goto free_dev_info; 590 } 591 592 g_debug("found device slot %d. Getting storage controller", number); 593 { 594 CONFIGRET cr; 595 DEVINST dev_inst, parent_dev_inst; 596 ULONG dev_id_size = 0; 597 598 size = 0; 599 while (!SetupDiGetDeviceInstanceId(dev_info, &dev_info_data, 600 parent_dev_id, size, &size)) { 601 if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) { 602 parent_dev_id = g_malloc(size); 603 } else { 604 error_setg_win32(errp, GetLastError(), 605 "failed to get device instance ID"); 606 goto out; 607 } 608 } 609 610 /* 611 * CM API used here as opposed to 612 * SetupDiGetDeviceProperty(..., DEVPKEY_Device_Parent, ...) 613 * which exports are only available in mingw-w64 6+ 614 */ 615 cr = CM_Locate_DevInst(&dev_inst, parent_dev_id, 0); 616 if (cr != CR_SUCCESS) { 617 g_error("CM_Locate_DevInst failed with code %lx", cr); 618 error_setg_win32(errp, GetLastError(), 619 "failed to get device instance"); 620 goto out; 621 } 622 cr = CM_Get_Parent(&parent_dev_inst, dev_inst, 0); 623 if (cr != CR_SUCCESS) { 624 g_error("CM_Get_Parent failed with code %lx", cr); 625 error_setg_win32(errp, GetLastError(), 626 "failed to get parent device instance"); 627 goto out; 628 } 629 630 cr = CM_Get_Device_ID_Size(&dev_id_size, parent_dev_inst, 0); 631 if (cr != CR_SUCCESS) { 632 g_error("CM_Get_Device_ID_Size failed with code %lx", cr); 633 error_setg_win32(errp, GetLastError(), 634 "failed to get parent device ID length"); 635 goto out; 636 } 637 638 ++dev_id_size; 639 if (dev_id_size > size) { 640 g_free(parent_dev_id); 641 parent_dev_id = g_malloc(dev_id_size); 642 } 643 644 cr = CM_Get_Device_ID(parent_dev_inst, parent_dev_id, dev_id_size, 645 0); 646 if (cr != CR_SUCCESS) { 647 g_error("CM_Get_Device_ID failed with code %lx", cr); 648 error_setg_win32(errp, GetLastError(), 649 "failed to get parent device ID"); 650 goto out; 651 } 652 } 653 654 g_debug("querying storage controller %s for PCI information", 655 parent_dev_id); 656 parent_dev_info = 657 SetupDiGetClassDevs(&GUID_DEVINTERFACE_STORAGEPORT, parent_dev_id, 658 NULL, DIGCF_PRESENT | DIGCF_DEVICEINTERFACE); 659 g_free(parent_dev_id); 660 661 if (parent_dev_info == INVALID_HANDLE_VALUE) { 662 error_setg_win32(errp, GetLastError(), 663 "failed to get parent device"); 664 goto out; 665 } 666 667 parent_dev_info_data.cbSize = sizeof(SP_DEVINFO_DATA); 668 if (!SetupDiEnumDeviceInfo(parent_dev_info, 0, &parent_dev_info_data)) { 669 error_setg_win32(errp, GetLastError(), 670 "failed to get parent device data"); 671 goto out; 672 } 673 674 for (j = 0; 675 SetupDiEnumDeviceInfo(parent_dev_info, j, &parent_dev_info_data); 676 j++) { 677 DWORD addr, bus, ui_slot, type; 678 int func, slot; 679 680 /* 681 * There is no need to allocate buffer in the next functions. The 682 * size is known and ULONG according to 683 * https://msdn.microsoft.com/en-us/library/windows/hardware/ff543095(v=vs.85).aspx 684 */ 685 if (!SetupDiGetDeviceRegistryProperty( 686 parent_dev_info, &parent_dev_info_data, SPDRP_BUSNUMBER, 687 &type, (PBYTE)&bus, size, NULL)) { 688 debug_error("failed to get PCI bus"); 689 bus = -1; 690 partial_pci = true; 691 } 692 693 /* 694 * The function retrieves the device's address. This value will be 695 * transformed into device function and number 696 */ 697 if (!SetupDiGetDeviceRegistryProperty( 698 parent_dev_info, &parent_dev_info_data, SPDRP_ADDRESS, 699 &type, (PBYTE)&addr, size, NULL)) { 700 debug_error("failed to get PCI address"); 701 addr = -1; 702 partial_pci = true; 703 } 704 705 /* 706 * This call returns UINumber of DEVICE_CAPABILITIES structure. 707 * This number is typically a user-perceived slot number. 708 */ 709 if (!SetupDiGetDeviceRegistryProperty( 710 parent_dev_info, &parent_dev_info_data, SPDRP_UI_NUMBER, 711 &type, (PBYTE)&ui_slot, size, NULL)) { 712 debug_error("failed to get PCI slot"); 713 ui_slot = -1; 714 partial_pci = true; 715 } 716 717 /* 718 * SetupApi gives us the same information as driver with 719 * IoGetDeviceProperty. According to Microsoft: 720 * 721 * FunctionNumber = (USHORT)((propertyAddress) & 0x0000FFFF) 722 * DeviceNumber = (USHORT)(((propertyAddress) >> 16) & 0x0000FFFF) 723 * SPDRP_ADDRESS is propertyAddress, so we do the same. 724 * 725 * https://docs.microsoft.com/en-us/windows/desktop/api/setupapi/nf-setupapi-setupdigetdeviceregistrypropertya 726 */ 727 if (partial_pci) { 728 pci->domain = -1; 729 pci->slot = -1; 730 pci->function = -1; 731 pci->bus = -1; 732 continue; 733 } else { 734 func = ((int)addr == -1) ? -1 : addr & 0x0000FFFF; 735 slot = ((int)addr == -1) ? -1 : (addr >> 16) & 0x0000FFFF; 736 if ((int)ui_slot != slot) { 737 g_debug("mismatch with reported slot values: %d vs %d", 738 (int)ui_slot, slot); 739 } 740 pci->domain = 0; 741 pci->slot = (int)ui_slot; 742 pci->function = func; 743 pci->bus = (int)bus; 744 break; 745 } 746 } 747 SetupDiDestroyDeviceInfoList(parent_dev_info); 748 break; 749 } 750 751 free_dev_info: 752 SetupDiDestroyDeviceInfoList(dev_info); 753 out: 754 return pci; 755 } 756 757 static void get_disk_properties(HANDLE vol_h, GuestDiskAddress *disk, 758 Error **errp) 759 { 760 STORAGE_PROPERTY_QUERY query; 761 STORAGE_DEVICE_DESCRIPTOR *dev_desc, buf; 762 DWORD received; 763 ULONG size = sizeof(buf); 764 765 dev_desc = &buf; 766 query.PropertyId = StorageDeviceProperty; 767 query.QueryType = PropertyStandardQuery; 768 769 if (!DeviceIoControl(vol_h, IOCTL_STORAGE_QUERY_PROPERTY, &query, 770 sizeof(STORAGE_PROPERTY_QUERY), dev_desc, 771 size, &received, NULL)) { 772 error_setg_win32(errp, GetLastError(), "failed to get bus type"); 773 return; 774 } 775 disk->bus_type = find_bus_type(dev_desc->BusType); 776 g_debug("bus type %d", disk->bus_type); 777 778 /* Query once more. Now with long enough buffer. */ 779 size = dev_desc->Size; 780 dev_desc = g_malloc0(size); 781 if (!DeviceIoControl(vol_h, IOCTL_STORAGE_QUERY_PROPERTY, &query, 782 sizeof(STORAGE_PROPERTY_QUERY), dev_desc, 783 size, &received, NULL)) { 784 error_setg_win32(errp, GetLastError(), "failed to get serial number"); 785 g_debug("failed to get serial number"); 786 goto out_free; 787 } 788 if (dev_desc->SerialNumberOffset > 0) { 789 const char *serial; 790 size_t len; 791 792 if (dev_desc->SerialNumberOffset >= received) { 793 error_setg(errp, "failed to get serial number: offset outside the buffer"); 794 g_debug("serial number offset outside the buffer"); 795 goto out_free; 796 } 797 serial = (char *)dev_desc + dev_desc->SerialNumberOffset; 798 len = received - dev_desc->SerialNumberOffset; 799 g_debug("serial number \"%s\"", serial); 800 if (*serial != 0) { 801 disk->serial = g_strndup(serial, len); 802 disk->has_serial = true; 803 } 804 } 805 out_free: 806 g_free(dev_desc); 807 808 return; 809 } 810 811 static void get_single_disk_info(int disk_number, 812 GuestDiskAddress *disk, Error **errp) 813 { 814 SCSI_ADDRESS addr, *scsi_ad; 815 DWORD len; 816 HANDLE disk_h; 817 Error *local_err = NULL; 818 819 scsi_ad = &addr; 820 821 g_debug("getting disk info for: %s", disk->dev); 822 disk_h = CreateFile(disk->dev, 0, FILE_SHARE_READ, NULL, OPEN_EXISTING, 823 0, NULL); 824 if (disk_h == INVALID_HANDLE_VALUE) { 825 error_setg_win32(errp, GetLastError(), "failed to open disk"); 826 return; 827 } 828 829 get_disk_properties(disk_h, disk, &local_err); 830 if (local_err) { 831 error_propagate(errp, local_err); 832 goto err_close; 833 } 834 835 g_debug("bus type %d", disk->bus_type); 836 /* always set pci_controller as required by schema. get_pci_info() should 837 * report -1 values for non-PCI buses rather than fail. fail the command 838 * if that doesn't hold since that suggests some other unexpected 839 * breakage 840 */ 841 disk->pci_controller = get_pci_info(disk_number, &local_err); 842 if (local_err) { 843 error_propagate(errp, local_err); 844 goto err_close; 845 } 846 if (disk->bus_type == GUEST_DISK_BUS_TYPE_SCSI 847 || disk->bus_type == GUEST_DISK_BUS_TYPE_IDE 848 || disk->bus_type == GUEST_DISK_BUS_TYPE_RAID 849 /* This bus type is not supported before Windows Server 2003 SP1 */ 850 || disk->bus_type == GUEST_DISK_BUS_TYPE_SAS 851 ) { 852 /* We are able to use the same ioctls for different bus types 853 * according to Microsoft docs 854 * https://technet.microsoft.com/en-us/library/ee851589(v=ws.10).aspx */ 855 g_debug("getting SCSI info"); 856 if (DeviceIoControl(disk_h, IOCTL_SCSI_GET_ADDRESS, NULL, 0, scsi_ad, 857 sizeof(SCSI_ADDRESS), &len, NULL)) { 858 disk->unit = addr.Lun; 859 disk->target = addr.TargetId; 860 disk->bus = addr.PathId; 861 } 862 /* We do not set error in this case, because we still have enough 863 * information about volume. */ 864 } 865 866 err_close: 867 CloseHandle(disk_h); 868 return; 869 } 870 871 /* VSS provider works with volumes, thus there is no difference if 872 * the volume consist of spanned disks. Info about the first disk in the 873 * volume is returned for the spanned disk group (LVM) */ 874 static GuestDiskAddressList *build_guest_disk_info(char *guid, Error **errp) 875 { 876 Error *local_err = NULL; 877 GuestDiskAddressList *list = NULL, *cur_item = NULL; 878 GuestDiskAddress *disk = NULL; 879 int i; 880 HANDLE vol_h; 881 DWORD size; 882 PVOLUME_DISK_EXTENTS extents = NULL; 883 884 /* strip final backslash */ 885 char *name = g_strdup(guid); 886 if (g_str_has_suffix(name, "\\")) { 887 name[strlen(name) - 1] = 0; 888 } 889 890 g_debug("opening %s", name); 891 vol_h = CreateFile(name, 0, FILE_SHARE_READ, NULL, OPEN_EXISTING, 892 0, NULL); 893 if (vol_h == INVALID_HANDLE_VALUE) { 894 error_setg_win32(errp, GetLastError(), "failed to open volume"); 895 goto out; 896 } 897 898 /* Get list of extents */ 899 g_debug("getting disk extents"); 900 size = sizeof(VOLUME_DISK_EXTENTS); 901 extents = g_malloc0(size); 902 if (!DeviceIoControl(vol_h, IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS, NULL, 903 0, extents, size, &size, NULL)) { 904 DWORD last_err = GetLastError(); 905 if (last_err == ERROR_MORE_DATA) { 906 /* Try once more with big enough buffer */ 907 g_free(extents); 908 extents = g_malloc0(size); 909 if (!DeviceIoControl( 910 vol_h, IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS, NULL, 911 0, extents, size, NULL, NULL)) { 912 error_setg_win32(errp, GetLastError(), 913 "failed to get disk extents"); 914 goto out; 915 } 916 } else if (last_err == ERROR_INVALID_FUNCTION) { 917 /* Possibly CD-ROM or a shared drive. Try to pass the volume */ 918 g_debug("volume not on disk"); 919 disk = g_malloc0(sizeof(GuestDiskAddress)); 920 disk->has_dev = true; 921 disk->dev = g_strdup(name); 922 get_single_disk_info(0xffffffff, disk, &local_err); 923 if (local_err) { 924 g_debug("failed to get disk info, ignoring error: %s", 925 error_get_pretty(local_err)); 926 error_free(local_err); 927 goto out; 928 } 929 list = g_malloc0(sizeof(*list)); 930 list->value = disk; 931 disk = NULL; 932 list->next = NULL; 933 goto out; 934 } else { 935 error_setg_win32(errp, GetLastError(), 936 "failed to get disk extents"); 937 goto out; 938 } 939 } 940 g_debug("Number of extents: %lu", extents->NumberOfDiskExtents); 941 942 /* Go through each extent */ 943 for (i = 0; i < extents->NumberOfDiskExtents; i++) { 944 disk = g_malloc0(sizeof(GuestDiskAddress)); 945 946 /* Disk numbers directly correspond to numbers used in UNCs 947 * 948 * See documentation for DISK_EXTENT: 949 * https://docs.microsoft.com/en-us/windows/desktop/api/winioctl/ns-winioctl-_disk_extent 950 * 951 * See also Naming Files, Paths and Namespaces: 952 * https://docs.microsoft.com/en-us/windows/desktop/FileIO/naming-a-file#win32-device-namespaces 953 */ 954 disk->has_dev = true; 955 disk->dev = g_strdup_printf("\\\\.\\PhysicalDrive%lu", 956 extents->Extents[i].DiskNumber); 957 958 get_single_disk_info(extents->Extents[i].DiskNumber, disk, &local_err); 959 if (local_err) { 960 error_propagate(errp, local_err); 961 goto out; 962 } 963 cur_item = g_malloc0(sizeof(*list)); 964 cur_item->value = disk; 965 disk = NULL; 966 cur_item->next = list; 967 list = cur_item; 968 } 969 970 971 out: 972 if (vol_h != INVALID_HANDLE_VALUE) { 973 CloseHandle(vol_h); 974 } 975 qapi_free_GuestDiskAddress(disk); 976 g_free(extents); 977 g_free(name); 978 979 return list; 980 } 981 982 GuestDiskInfoList *qmp_guest_get_disks(Error **errp) 983 { 984 ERRP_GUARD(); 985 GuestDiskInfoList *new = NULL, *ret = NULL; 986 HDEVINFO dev_info; 987 SP_DEVICE_INTERFACE_DATA dev_iface_data; 988 int i; 989 990 dev_info = SetupDiGetClassDevs(&GUID_DEVINTERFACE_DISK, 0, 0, 991 DIGCF_PRESENT | DIGCF_DEVICEINTERFACE); 992 if (dev_info == INVALID_HANDLE_VALUE) { 993 error_setg_win32(errp, GetLastError(), "failed to get device tree"); 994 return NULL; 995 } 996 997 g_debug("enumerating devices"); 998 dev_iface_data.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA); 999 for (i = 0; 1000 SetupDiEnumDeviceInterfaces(dev_info, NULL, &GUID_DEVINTERFACE_DISK, 1001 i, &dev_iface_data); 1002 i++) { 1003 GuestDiskAddress *address = NULL; 1004 GuestDiskInfo *disk = NULL; 1005 Error *local_err = NULL; 1006 g_autofree PSP_DEVICE_INTERFACE_DETAIL_DATA 1007 pdev_iface_detail_data = NULL; 1008 STORAGE_DEVICE_NUMBER sdn; 1009 HANDLE dev_file; 1010 DWORD size = 0; 1011 BOOL result; 1012 int attempt; 1013 1014 g_debug(" getting device path"); 1015 for (attempt = 0, result = FALSE; attempt < 2 && !result; attempt++) { 1016 result = SetupDiGetDeviceInterfaceDetail(dev_info, 1017 &dev_iface_data, pdev_iface_detail_data, size, &size, NULL); 1018 if (result) { 1019 break; 1020 } 1021 if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) { 1022 pdev_iface_detail_data = g_realloc(pdev_iface_detail_data, 1023 size); 1024 pdev_iface_detail_data->cbSize = 1025 sizeof(*pdev_iface_detail_data); 1026 } else { 1027 g_debug("failed to get device interface details"); 1028 break; 1029 } 1030 } 1031 if (!result) { 1032 g_debug("skipping device"); 1033 continue; 1034 } 1035 1036 g_debug(" device: %s", pdev_iface_detail_data->DevicePath); 1037 dev_file = CreateFile(pdev_iface_detail_data->DevicePath, 0, 1038 FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, NULL); 1039 if (!DeviceIoControl(dev_file, IOCTL_STORAGE_GET_DEVICE_NUMBER, 1040 NULL, 0, &sdn, sizeof(sdn), &size, NULL)) { 1041 CloseHandle(dev_file); 1042 debug_error("failed to get storage device number"); 1043 continue; 1044 } 1045 CloseHandle(dev_file); 1046 1047 disk = g_new0(GuestDiskInfo, 1); 1048 disk->name = g_strdup_printf("\\\\.\\PhysicalDrive%lu", 1049 sdn.DeviceNumber); 1050 1051 g_debug(" number: %lu", sdn.DeviceNumber); 1052 address = g_malloc0(sizeof(GuestDiskAddress)); 1053 address->has_dev = true; 1054 address->dev = g_strdup(disk->name); 1055 get_single_disk_info(sdn.DeviceNumber, address, &local_err); 1056 if (local_err) { 1057 g_debug("failed to get disk info: %s", 1058 error_get_pretty(local_err)); 1059 error_free(local_err); 1060 qapi_free_GuestDiskAddress(address); 1061 address = NULL; 1062 } else { 1063 disk->address = address; 1064 disk->has_address = true; 1065 } 1066 1067 new = g_malloc0(sizeof(GuestDiskInfoList)); 1068 new->value = disk; 1069 new->next = ret; 1070 ret = new; 1071 } 1072 1073 SetupDiDestroyDeviceInfoList(dev_info); 1074 return ret; 1075 } 1076 1077 #else 1078 1079 static GuestDiskAddressList *build_guest_disk_info(char *guid, Error **errp) 1080 { 1081 return NULL; 1082 } 1083 1084 GuestDiskInfoList *qmp_guest_get_disks(Error **errp) 1085 { 1086 error_setg(errp, QERR_UNSUPPORTED); 1087 return NULL; 1088 } 1089 1090 #endif /* CONFIG_QGA_NTDDSCSI */ 1091 1092 static GuestFilesystemInfo *build_guest_fsinfo(char *guid, Error **errp) 1093 { 1094 DWORD info_size; 1095 char mnt, *mnt_point; 1096 wchar_t wfs_name[32]; 1097 char fs_name[32]; 1098 wchar_t vol_info[MAX_PATH + 1]; 1099 size_t len; 1100 uint64_t i64FreeBytesToCaller, i64TotalBytes, i64FreeBytes; 1101 GuestFilesystemInfo *fs = NULL; 1102 HANDLE hLocalDiskHandle = NULL; 1103 1104 GetVolumePathNamesForVolumeName(guid, (LPCH)&mnt, 0, &info_size); 1105 if (GetLastError() != ERROR_MORE_DATA) { 1106 error_setg_win32(errp, GetLastError(), "failed to get volume name"); 1107 return NULL; 1108 } 1109 1110 mnt_point = g_malloc(info_size + 1); 1111 if (!GetVolumePathNamesForVolumeName(guid, mnt_point, info_size, 1112 &info_size)) { 1113 error_setg_win32(errp, GetLastError(), "failed to get volume name"); 1114 goto free; 1115 } 1116 1117 hLocalDiskHandle = CreateFile(guid, 0 , 0, NULL, OPEN_EXISTING, 1118 FILE_ATTRIBUTE_NORMAL | 1119 FILE_FLAG_BACKUP_SEMANTICS, NULL); 1120 if (INVALID_HANDLE_VALUE == hLocalDiskHandle) { 1121 error_setg_win32(errp, GetLastError(), "failed to get handle for volume"); 1122 goto free; 1123 } 1124 1125 len = strlen(mnt_point); 1126 mnt_point[len] = '\\'; 1127 mnt_point[len+1] = 0; 1128 1129 if (!GetVolumeInformationByHandleW(hLocalDiskHandle, vol_info, 1130 sizeof(vol_info), NULL, NULL, NULL, 1131 (LPWSTR) & wfs_name, sizeof(wfs_name))) { 1132 if (GetLastError() != ERROR_NOT_READY) { 1133 error_setg_win32(errp, GetLastError(), "failed to get volume info"); 1134 } 1135 goto free; 1136 } 1137 1138 fs = g_malloc(sizeof(*fs)); 1139 fs->name = g_strdup(guid); 1140 fs->has_total_bytes = false; 1141 fs->has_used_bytes = false; 1142 if (len == 0) { 1143 fs->mountpoint = g_strdup("System Reserved"); 1144 } else { 1145 fs->mountpoint = g_strndup(mnt_point, len); 1146 if (GetDiskFreeSpaceEx(fs->mountpoint, 1147 (PULARGE_INTEGER) & i64FreeBytesToCaller, 1148 (PULARGE_INTEGER) & i64TotalBytes, 1149 (PULARGE_INTEGER) & i64FreeBytes)) { 1150 fs->used_bytes = i64TotalBytes - i64FreeBytes; 1151 fs->total_bytes = i64TotalBytes; 1152 fs->has_total_bytes = true; 1153 fs->has_used_bytes = true; 1154 } 1155 } 1156 wcstombs(fs_name, wfs_name, sizeof(wfs_name)); 1157 fs->type = g_strdup(fs_name); 1158 fs->disk = build_guest_disk_info(guid, errp); 1159 free: 1160 CloseHandle(hLocalDiskHandle); 1161 g_free(mnt_point); 1162 return fs; 1163 } 1164 1165 GuestFilesystemInfoList *qmp_guest_get_fsinfo(Error **errp) 1166 { 1167 HANDLE vol_h; 1168 GuestFilesystemInfoList *new, *ret = NULL; 1169 char guid[256]; 1170 1171 vol_h = FindFirstVolume(guid, sizeof(guid)); 1172 if (vol_h == INVALID_HANDLE_VALUE) { 1173 error_setg_win32(errp, GetLastError(), "failed to find any volume"); 1174 return NULL; 1175 } 1176 1177 do { 1178 Error *local_err = NULL; 1179 GuestFilesystemInfo *info = build_guest_fsinfo(guid, &local_err); 1180 if (local_err) { 1181 g_debug("failed to get filesystem info, ignoring error: %s", 1182 error_get_pretty(local_err)); 1183 error_free(local_err); 1184 continue; 1185 } 1186 new = g_malloc(sizeof(*ret)); 1187 new->value = info; 1188 new->next = ret; 1189 ret = new; 1190 } while (FindNextVolume(vol_h, guid, sizeof(guid))); 1191 1192 if (GetLastError() != ERROR_NO_MORE_FILES) { 1193 error_setg_win32(errp, GetLastError(), "failed to find next volume"); 1194 } 1195 1196 FindVolumeClose(vol_h); 1197 return ret; 1198 } 1199 1200 /* 1201 * Return status of freeze/thaw 1202 */ 1203 GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **errp) 1204 { 1205 if (!vss_initialized()) { 1206 error_setg(errp, QERR_UNSUPPORTED); 1207 return 0; 1208 } 1209 1210 if (ga_is_frozen(ga_state)) { 1211 return GUEST_FSFREEZE_STATUS_FROZEN; 1212 } 1213 1214 return GUEST_FSFREEZE_STATUS_THAWED; 1215 } 1216 1217 /* 1218 * Freeze local file systems using Volume Shadow-copy Service. 1219 * The frozen state is limited for up to 10 seconds by VSS. 1220 */ 1221 int64_t qmp_guest_fsfreeze_freeze(Error **errp) 1222 { 1223 return qmp_guest_fsfreeze_freeze_list(false, NULL, errp); 1224 } 1225 1226 int64_t qmp_guest_fsfreeze_freeze_list(bool has_mountpoints, 1227 strList *mountpoints, 1228 Error **errp) 1229 { 1230 int i; 1231 Error *local_err = NULL; 1232 1233 if (!vss_initialized()) { 1234 error_setg(errp, QERR_UNSUPPORTED); 1235 return 0; 1236 } 1237 1238 slog("guest-fsfreeze called"); 1239 1240 /* cannot risk guest agent blocking itself on a write in this state */ 1241 ga_set_frozen(ga_state); 1242 1243 qga_vss_fsfreeze(&i, true, mountpoints, &local_err); 1244 if (local_err) { 1245 error_propagate(errp, local_err); 1246 goto error; 1247 } 1248 1249 return i; 1250 1251 error: 1252 local_err = NULL; 1253 qmp_guest_fsfreeze_thaw(&local_err); 1254 if (local_err) { 1255 g_debug("cleanup thaw: %s", error_get_pretty(local_err)); 1256 error_free(local_err); 1257 } 1258 return 0; 1259 } 1260 1261 /* 1262 * Thaw local file systems using Volume Shadow-copy Service. 1263 */ 1264 int64_t qmp_guest_fsfreeze_thaw(Error **errp) 1265 { 1266 int i; 1267 1268 if (!vss_initialized()) { 1269 error_setg(errp, QERR_UNSUPPORTED); 1270 return 0; 1271 } 1272 1273 qga_vss_fsfreeze(&i, false, NULL, errp); 1274 1275 ga_unset_frozen(ga_state); 1276 return i; 1277 } 1278 1279 static void guest_fsfreeze_cleanup(void) 1280 { 1281 Error *err = NULL; 1282 1283 if (!vss_initialized()) { 1284 return; 1285 } 1286 1287 if (ga_is_frozen(ga_state) == GUEST_FSFREEZE_STATUS_FROZEN) { 1288 qmp_guest_fsfreeze_thaw(&err); 1289 if (err) { 1290 slog("failed to clean up frozen filesystems: %s", 1291 error_get_pretty(err)); 1292 error_free(err); 1293 } 1294 } 1295 1296 vss_deinit(true); 1297 } 1298 1299 /* 1300 * Walk list of mounted file systems in the guest, and discard unused 1301 * areas. 1302 */ 1303 GuestFilesystemTrimResponse * 1304 qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp) 1305 { 1306 GuestFilesystemTrimResponse *resp; 1307 HANDLE handle; 1308 WCHAR guid[MAX_PATH] = L""; 1309 OSVERSIONINFO osvi; 1310 BOOL win8_or_later; 1311 1312 ZeroMemory(&osvi, sizeof(OSVERSIONINFO)); 1313 osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO); 1314 GetVersionEx(&osvi); 1315 win8_or_later = (osvi.dwMajorVersion > 6 || 1316 ((osvi.dwMajorVersion == 6) && 1317 (osvi.dwMinorVersion >= 2))); 1318 if (!win8_or_later) { 1319 error_setg(errp, "fstrim is only supported for Win8+"); 1320 return NULL; 1321 } 1322 1323 handle = FindFirstVolumeW(guid, ARRAYSIZE(guid)); 1324 if (handle == INVALID_HANDLE_VALUE) { 1325 error_setg_win32(errp, GetLastError(), "failed to find any volume"); 1326 return NULL; 1327 } 1328 1329 resp = g_new0(GuestFilesystemTrimResponse, 1); 1330 1331 do { 1332 GuestFilesystemTrimResult *res; 1333 GuestFilesystemTrimResultList *list; 1334 PWCHAR uc_path; 1335 DWORD char_count = 0; 1336 char *path, *out; 1337 GError *gerr = NULL; 1338 gchar * argv[4]; 1339 1340 GetVolumePathNamesForVolumeNameW(guid, NULL, 0, &char_count); 1341 1342 if (GetLastError() != ERROR_MORE_DATA) { 1343 continue; 1344 } 1345 if (GetDriveTypeW(guid) != DRIVE_FIXED) { 1346 continue; 1347 } 1348 1349 uc_path = g_malloc(sizeof(WCHAR) * char_count); 1350 if (!GetVolumePathNamesForVolumeNameW(guid, uc_path, char_count, 1351 &char_count) || !*uc_path) { 1352 /* strange, but this condition could be faced even with size == 2 */ 1353 g_free(uc_path); 1354 continue; 1355 } 1356 1357 res = g_new0(GuestFilesystemTrimResult, 1); 1358 1359 path = g_utf16_to_utf8(uc_path, char_count, NULL, NULL, &gerr); 1360 1361 g_free(uc_path); 1362 1363 if (!path) { 1364 res->has_error = true; 1365 res->error = g_strdup(gerr->message); 1366 g_error_free(gerr); 1367 break; 1368 } 1369 1370 res->path = path; 1371 1372 list = g_new0(GuestFilesystemTrimResultList, 1); 1373 list->value = res; 1374 list->next = resp->paths; 1375 1376 resp->paths = list; 1377 1378 memset(argv, 0, sizeof(argv)); 1379 argv[0] = (gchar *)"defrag.exe"; 1380 argv[1] = (gchar *)"/L"; 1381 argv[2] = path; 1382 1383 if (!g_spawn_sync(NULL, argv, NULL, G_SPAWN_SEARCH_PATH, NULL, NULL, 1384 &out /* stdout */, NULL /* stdin */, 1385 NULL, &gerr)) { 1386 res->has_error = true; 1387 res->error = g_strdup(gerr->message); 1388 g_error_free(gerr); 1389 } else { 1390 /* defrag.exe is UGLY. Exit code is ALWAYS zero. 1391 Error is reported in the output with something like 1392 (x89000020) etc code in the stdout */ 1393 1394 int i; 1395 gchar **lines = g_strsplit(out, "\r\n", 0); 1396 g_free(out); 1397 1398 for (i = 0; lines[i] != NULL; i++) { 1399 if (g_strstr_len(lines[i], -1, "(0x") == NULL) { 1400 continue; 1401 } 1402 res->has_error = true; 1403 res->error = g_strdup(lines[i]); 1404 break; 1405 } 1406 g_strfreev(lines); 1407 } 1408 } while (FindNextVolumeW(handle, guid, ARRAYSIZE(guid))); 1409 1410 FindVolumeClose(handle); 1411 return resp; 1412 } 1413 1414 typedef enum { 1415 GUEST_SUSPEND_MODE_DISK, 1416 GUEST_SUSPEND_MODE_RAM 1417 } GuestSuspendMode; 1418 1419 static void check_suspend_mode(GuestSuspendMode mode, Error **errp) 1420 { 1421 SYSTEM_POWER_CAPABILITIES sys_pwr_caps; 1422 1423 ZeroMemory(&sys_pwr_caps, sizeof(sys_pwr_caps)); 1424 if (!GetPwrCapabilities(&sys_pwr_caps)) { 1425 error_setg(errp, QERR_QGA_COMMAND_FAILED, 1426 "failed to determine guest suspend capabilities"); 1427 return; 1428 } 1429 1430 switch (mode) { 1431 case GUEST_SUSPEND_MODE_DISK: 1432 if (!sys_pwr_caps.SystemS4) { 1433 error_setg(errp, QERR_QGA_COMMAND_FAILED, 1434 "suspend-to-disk not supported by OS"); 1435 } 1436 break; 1437 case GUEST_SUSPEND_MODE_RAM: 1438 if (!sys_pwr_caps.SystemS3) { 1439 error_setg(errp, QERR_QGA_COMMAND_FAILED, 1440 "suspend-to-ram not supported by OS"); 1441 } 1442 break; 1443 default: 1444 abort(); 1445 } 1446 } 1447 1448 static DWORD WINAPI do_suspend(LPVOID opaque) 1449 { 1450 GuestSuspendMode *mode = opaque; 1451 DWORD ret = 0; 1452 1453 if (!SetSuspendState(*mode == GUEST_SUSPEND_MODE_DISK, TRUE, TRUE)) { 1454 g_autofree gchar *emsg = g_win32_error_message(GetLastError()); 1455 slog("failed to suspend guest: %s", emsg); 1456 ret = -1; 1457 } 1458 g_free(mode); 1459 return ret; 1460 } 1461 1462 void qmp_guest_suspend_disk(Error **errp) 1463 { 1464 Error *local_err = NULL; 1465 GuestSuspendMode *mode = g_new(GuestSuspendMode, 1); 1466 1467 *mode = GUEST_SUSPEND_MODE_DISK; 1468 check_suspend_mode(*mode, &local_err); 1469 if (local_err) { 1470 goto out; 1471 } 1472 acquire_privilege(SE_SHUTDOWN_NAME, &local_err); 1473 if (local_err) { 1474 goto out; 1475 } 1476 execute_async(do_suspend, mode, &local_err); 1477 1478 out: 1479 if (local_err) { 1480 error_propagate(errp, local_err); 1481 g_free(mode); 1482 } 1483 } 1484 1485 void qmp_guest_suspend_ram(Error **errp) 1486 { 1487 Error *local_err = NULL; 1488 GuestSuspendMode *mode = g_new(GuestSuspendMode, 1); 1489 1490 *mode = GUEST_SUSPEND_MODE_RAM; 1491 check_suspend_mode(*mode, &local_err); 1492 if (local_err) { 1493 goto out; 1494 } 1495 acquire_privilege(SE_SHUTDOWN_NAME, &local_err); 1496 if (local_err) { 1497 goto out; 1498 } 1499 execute_async(do_suspend, mode, &local_err); 1500 1501 out: 1502 if (local_err) { 1503 error_propagate(errp, local_err); 1504 g_free(mode); 1505 } 1506 } 1507 1508 void qmp_guest_suspend_hybrid(Error **errp) 1509 { 1510 error_setg(errp, QERR_UNSUPPORTED); 1511 } 1512 1513 static IP_ADAPTER_ADDRESSES *guest_get_adapters_addresses(Error **errp) 1514 { 1515 IP_ADAPTER_ADDRESSES *adptr_addrs = NULL; 1516 ULONG adptr_addrs_len = 0; 1517 DWORD ret; 1518 1519 /* Call the first time to get the adptr_addrs_len. */ 1520 GetAdaptersAddresses(AF_UNSPEC, GAA_FLAG_INCLUDE_PREFIX, 1521 NULL, adptr_addrs, &adptr_addrs_len); 1522 1523 adptr_addrs = g_malloc(adptr_addrs_len); 1524 ret = GetAdaptersAddresses(AF_UNSPEC, GAA_FLAG_INCLUDE_PREFIX, 1525 NULL, adptr_addrs, &adptr_addrs_len); 1526 if (ret != ERROR_SUCCESS) { 1527 error_setg_win32(errp, ret, "failed to get adapters addresses"); 1528 g_free(adptr_addrs); 1529 adptr_addrs = NULL; 1530 } 1531 return adptr_addrs; 1532 } 1533 1534 static char *guest_wctomb_dup(WCHAR *wstr) 1535 { 1536 char *str; 1537 size_t str_size; 1538 1539 str_size = WideCharToMultiByte(CP_UTF8, 0, wstr, -1, NULL, 0, NULL, NULL); 1540 /* add 1 to str_size for NULL terminator */ 1541 str = g_malloc(str_size + 1); 1542 WideCharToMultiByte(CP_UTF8, 0, wstr, -1, str, str_size, NULL, NULL); 1543 return str; 1544 } 1545 1546 static char *guest_addr_to_str(IP_ADAPTER_UNICAST_ADDRESS *ip_addr, 1547 Error **errp) 1548 { 1549 char addr_str[INET6_ADDRSTRLEN + INET_ADDRSTRLEN]; 1550 DWORD len; 1551 int ret; 1552 1553 if (ip_addr->Address.lpSockaddr->sa_family == AF_INET || 1554 ip_addr->Address.lpSockaddr->sa_family == AF_INET6) { 1555 len = sizeof(addr_str); 1556 ret = WSAAddressToString(ip_addr->Address.lpSockaddr, 1557 ip_addr->Address.iSockaddrLength, 1558 NULL, 1559 addr_str, 1560 &len); 1561 if (ret != 0) { 1562 error_setg_win32(errp, WSAGetLastError(), 1563 "failed address presentation form conversion"); 1564 return NULL; 1565 } 1566 return g_strdup(addr_str); 1567 } 1568 return NULL; 1569 } 1570 1571 static int64_t guest_ip_prefix(IP_ADAPTER_UNICAST_ADDRESS *ip_addr) 1572 { 1573 /* For Windows Vista/2008 and newer, use the OnLinkPrefixLength 1574 * field to obtain the prefix. 1575 */ 1576 return ip_addr->OnLinkPrefixLength; 1577 } 1578 1579 #define INTERFACE_PATH_BUF_SZ 512 1580 1581 static DWORD get_interface_index(const char *guid) 1582 { 1583 ULONG index; 1584 DWORD status; 1585 wchar_t wbuf[INTERFACE_PATH_BUF_SZ]; 1586 snwprintf(wbuf, INTERFACE_PATH_BUF_SZ, L"\\device\\tcpip_%s", guid); 1587 wbuf[INTERFACE_PATH_BUF_SZ - 1] = 0; 1588 status = GetAdapterIndex (wbuf, &index); 1589 if (status != NO_ERROR) { 1590 return (DWORD)~0; 1591 } else { 1592 return index; 1593 } 1594 } 1595 1596 typedef NETIOAPI_API (WINAPI *GetIfEntry2Func)(PMIB_IF_ROW2 Row); 1597 1598 static int guest_get_network_stats(const char *name, 1599 GuestNetworkInterfaceStat *stats) 1600 { 1601 OSVERSIONINFO os_ver; 1602 1603 os_ver.dwOSVersionInfoSize = sizeof(OSVERSIONINFO); 1604 GetVersionEx(&os_ver); 1605 if (os_ver.dwMajorVersion >= 6) { 1606 MIB_IF_ROW2 a_mid_ifrow; 1607 GetIfEntry2Func getifentry2_ex; 1608 DWORD if_index = 0; 1609 HMODULE module = GetModuleHandle("iphlpapi"); 1610 PVOID func = GetProcAddress(module, "GetIfEntry2"); 1611 1612 if (func == NULL) { 1613 return -1; 1614 } 1615 1616 getifentry2_ex = (GetIfEntry2Func)func; 1617 if_index = get_interface_index(name); 1618 if (if_index == (DWORD)~0) { 1619 return -1; 1620 } 1621 1622 memset(&a_mid_ifrow, 0, sizeof(a_mid_ifrow)); 1623 a_mid_ifrow.InterfaceIndex = if_index; 1624 if (NO_ERROR == getifentry2_ex(&a_mid_ifrow)) { 1625 stats->rx_bytes = a_mid_ifrow.InOctets; 1626 stats->rx_packets = a_mid_ifrow.InUcastPkts; 1627 stats->rx_errs = a_mid_ifrow.InErrors; 1628 stats->rx_dropped = a_mid_ifrow.InDiscards; 1629 stats->tx_bytes = a_mid_ifrow.OutOctets; 1630 stats->tx_packets = a_mid_ifrow.OutUcastPkts; 1631 stats->tx_errs = a_mid_ifrow.OutErrors; 1632 stats->tx_dropped = a_mid_ifrow.OutDiscards; 1633 return 0; 1634 } 1635 } 1636 return -1; 1637 } 1638 1639 GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp) 1640 { 1641 IP_ADAPTER_ADDRESSES *adptr_addrs, *addr; 1642 IP_ADAPTER_UNICAST_ADDRESS *ip_addr = NULL; 1643 GuestNetworkInterfaceList *head = NULL, *cur_item = NULL; 1644 GuestIpAddressList *head_addr, *cur_addr; 1645 GuestNetworkInterfaceList *info; 1646 GuestNetworkInterfaceStat *interface_stat = NULL; 1647 GuestIpAddressList *address_item = NULL; 1648 unsigned char *mac_addr; 1649 char *addr_str; 1650 WORD wsa_version; 1651 WSADATA wsa_data; 1652 int ret; 1653 1654 adptr_addrs = guest_get_adapters_addresses(errp); 1655 if (adptr_addrs == NULL) { 1656 return NULL; 1657 } 1658 1659 /* Make WSA APIs available. */ 1660 wsa_version = MAKEWORD(2, 2); 1661 ret = WSAStartup(wsa_version, &wsa_data); 1662 if (ret != 0) { 1663 error_setg_win32(errp, ret, "failed socket startup"); 1664 goto out; 1665 } 1666 1667 for (addr = adptr_addrs; addr; addr = addr->Next) { 1668 info = g_malloc0(sizeof(*info)); 1669 1670 if (cur_item == NULL) { 1671 head = cur_item = info; 1672 } else { 1673 cur_item->next = info; 1674 cur_item = info; 1675 } 1676 1677 info->value = g_malloc0(sizeof(*info->value)); 1678 info->value->name = guest_wctomb_dup(addr->FriendlyName); 1679 1680 if (addr->PhysicalAddressLength != 0) { 1681 mac_addr = addr->PhysicalAddress; 1682 1683 info->value->hardware_address = 1684 g_strdup_printf("%02x:%02x:%02x:%02x:%02x:%02x", 1685 (int) mac_addr[0], (int) mac_addr[1], 1686 (int) mac_addr[2], (int) mac_addr[3], 1687 (int) mac_addr[4], (int) mac_addr[5]); 1688 1689 info->value->has_hardware_address = true; 1690 } 1691 1692 head_addr = NULL; 1693 cur_addr = NULL; 1694 for (ip_addr = addr->FirstUnicastAddress; 1695 ip_addr; 1696 ip_addr = ip_addr->Next) { 1697 addr_str = guest_addr_to_str(ip_addr, errp); 1698 if (addr_str == NULL) { 1699 continue; 1700 } 1701 1702 address_item = g_malloc0(sizeof(*address_item)); 1703 1704 if (!cur_addr) { 1705 head_addr = cur_addr = address_item; 1706 } else { 1707 cur_addr->next = address_item; 1708 cur_addr = address_item; 1709 } 1710 1711 address_item->value = g_malloc0(sizeof(*address_item->value)); 1712 address_item->value->ip_address = addr_str; 1713 address_item->value->prefix = guest_ip_prefix(ip_addr); 1714 if (ip_addr->Address.lpSockaddr->sa_family == AF_INET) { 1715 address_item->value->ip_address_type = 1716 GUEST_IP_ADDRESS_TYPE_IPV4; 1717 } else if (ip_addr->Address.lpSockaddr->sa_family == AF_INET6) { 1718 address_item->value->ip_address_type = 1719 GUEST_IP_ADDRESS_TYPE_IPV6; 1720 } 1721 } 1722 if (head_addr) { 1723 info->value->has_ip_addresses = true; 1724 info->value->ip_addresses = head_addr; 1725 } 1726 if (!info->value->has_statistics) { 1727 interface_stat = g_malloc0(sizeof(*interface_stat)); 1728 if (guest_get_network_stats(addr->AdapterName, 1729 interface_stat) == -1) { 1730 info->value->has_statistics = false; 1731 g_free(interface_stat); 1732 } else { 1733 info->value->statistics = interface_stat; 1734 info->value->has_statistics = true; 1735 } 1736 } 1737 } 1738 WSACleanup(); 1739 out: 1740 g_free(adptr_addrs); 1741 return head; 1742 } 1743 1744 static int64_t filetime_to_ns(const FILETIME *tf) 1745 { 1746 return ((((int64_t)tf->dwHighDateTime << 32) | tf->dwLowDateTime) 1747 - W32_FT_OFFSET) * 100; 1748 } 1749 1750 int64_t qmp_guest_get_time(Error **errp) 1751 { 1752 SYSTEMTIME ts = {0}; 1753 FILETIME tf; 1754 1755 GetSystemTime(&ts); 1756 if (ts.wYear < 1601 || ts.wYear > 30827) { 1757 error_setg(errp, "Failed to get time"); 1758 return -1; 1759 } 1760 1761 if (!SystemTimeToFileTime(&ts, &tf)) { 1762 error_setg(errp, "Failed to convert system time: %d", (int)GetLastError()); 1763 return -1; 1764 } 1765 1766 return filetime_to_ns(&tf); 1767 } 1768 1769 void qmp_guest_set_time(bool has_time, int64_t time_ns, Error **errp) 1770 { 1771 Error *local_err = NULL; 1772 SYSTEMTIME ts; 1773 FILETIME tf; 1774 LONGLONG time; 1775 1776 if (!has_time) { 1777 /* Unfortunately, Windows libraries don't provide an easy way to access 1778 * RTC yet: 1779 * 1780 * https://msdn.microsoft.com/en-us/library/aa908981.aspx 1781 * 1782 * Instead, a workaround is to use the Windows win32tm command to 1783 * resync the time using the Windows Time service. 1784 */ 1785 LPVOID msg_buffer; 1786 DWORD ret_flags; 1787 1788 HRESULT hr = system("w32tm /resync /nowait"); 1789 1790 if (GetLastError() != 0) { 1791 strerror_s((LPTSTR) & msg_buffer, 0, errno); 1792 error_setg(errp, "system(...) failed: %s", (LPCTSTR)msg_buffer); 1793 } else if (hr != 0) { 1794 if (hr == HRESULT_FROM_WIN32(ERROR_SERVICE_NOT_ACTIVE)) { 1795 error_setg(errp, "Windows Time service not running on the " 1796 "guest"); 1797 } else { 1798 if (!FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | 1799 FORMAT_MESSAGE_FROM_SYSTEM | 1800 FORMAT_MESSAGE_IGNORE_INSERTS, NULL, 1801 (DWORD)hr, MAKELANGID(LANG_NEUTRAL, 1802 SUBLANG_DEFAULT), (LPTSTR) & msg_buffer, 0, 1803 NULL)) { 1804 error_setg(errp, "w32tm failed with error (0x%lx), couldn'" 1805 "t retrieve error message", hr); 1806 } else { 1807 error_setg(errp, "w32tm failed with error (0x%lx): %s", hr, 1808 (LPCTSTR)msg_buffer); 1809 LocalFree(msg_buffer); 1810 } 1811 } 1812 } else if (!InternetGetConnectedState(&ret_flags, 0)) { 1813 error_setg(errp, "No internet connection on guest, sync not " 1814 "accurate"); 1815 } 1816 return; 1817 } 1818 1819 /* Validate time passed by user. */ 1820 if (time_ns < 0 || time_ns / 100 > INT64_MAX - W32_FT_OFFSET) { 1821 error_setg(errp, "Time %" PRId64 "is invalid", time_ns); 1822 return; 1823 } 1824 1825 time = time_ns / 100 + W32_FT_OFFSET; 1826 1827 tf.dwLowDateTime = (DWORD) time; 1828 tf.dwHighDateTime = (DWORD) (time >> 32); 1829 1830 if (!FileTimeToSystemTime(&tf, &ts)) { 1831 error_setg(errp, "Failed to convert system time %d", 1832 (int)GetLastError()); 1833 return; 1834 } 1835 1836 acquire_privilege(SE_SYSTEMTIME_NAME, &local_err); 1837 if (local_err) { 1838 error_propagate(errp, local_err); 1839 return; 1840 } 1841 1842 if (!SetSystemTime(&ts)) { 1843 error_setg(errp, "Failed to set time to guest: %d", (int)GetLastError()); 1844 return; 1845 } 1846 } 1847 1848 GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp) 1849 { 1850 PSYSTEM_LOGICAL_PROCESSOR_INFORMATION pslpi, ptr; 1851 DWORD length; 1852 GuestLogicalProcessorList *head, **link; 1853 Error *local_err = NULL; 1854 int64_t current; 1855 1856 ptr = pslpi = NULL; 1857 length = 0; 1858 current = 0; 1859 head = NULL; 1860 link = &head; 1861 1862 if ((GetLogicalProcessorInformation(pslpi, &length) == FALSE) && 1863 (GetLastError() == ERROR_INSUFFICIENT_BUFFER) && 1864 (length > sizeof(SYSTEM_LOGICAL_PROCESSOR_INFORMATION))) { 1865 ptr = pslpi = g_malloc0(length); 1866 if (GetLogicalProcessorInformation(pslpi, &length) == FALSE) { 1867 error_setg(&local_err, "Failed to get processor information: %d", 1868 (int)GetLastError()); 1869 } 1870 } else { 1871 error_setg(&local_err, 1872 "Failed to get processor information buffer length: %d", 1873 (int)GetLastError()); 1874 } 1875 1876 while ((local_err == NULL) && (length > 0)) { 1877 if (pslpi->Relationship == RelationProcessorCore) { 1878 ULONG_PTR cpu_bits = pslpi->ProcessorMask; 1879 1880 while (cpu_bits > 0) { 1881 if (!!(cpu_bits & 1)) { 1882 GuestLogicalProcessor *vcpu; 1883 GuestLogicalProcessorList *entry; 1884 1885 vcpu = g_malloc0(sizeof *vcpu); 1886 vcpu->logical_id = current++; 1887 vcpu->online = true; 1888 vcpu->has_can_offline = true; 1889 1890 entry = g_malloc0(sizeof *entry); 1891 entry->value = vcpu; 1892 1893 *link = entry; 1894 link = &entry->next; 1895 } 1896 cpu_bits >>= 1; 1897 } 1898 } 1899 length -= sizeof(SYSTEM_LOGICAL_PROCESSOR_INFORMATION); 1900 pslpi++; /* next entry */ 1901 } 1902 1903 g_free(ptr); 1904 1905 if (local_err == NULL) { 1906 if (head != NULL) { 1907 return head; 1908 } 1909 /* there's no guest with zero VCPUs */ 1910 error_setg(&local_err, "Guest reported zero VCPUs"); 1911 } 1912 1913 qapi_free_GuestLogicalProcessorList(head); 1914 error_propagate(errp, local_err); 1915 return NULL; 1916 } 1917 1918 int64_t qmp_guest_set_vcpus(GuestLogicalProcessorList *vcpus, Error **errp) 1919 { 1920 error_setg(errp, QERR_UNSUPPORTED); 1921 return -1; 1922 } 1923 1924 static gchar * 1925 get_net_error_message(gint error) 1926 { 1927 HMODULE module = NULL; 1928 gchar *retval = NULL; 1929 wchar_t *msg = NULL; 1930 int flags; 1931 size_t nchars; 1932 1933 flags = FORMAT_MESSAGE_ALLOCATE_BUFFER | 1934 FORMAT_MESSAGE_IGNORE_INSERTS | 1935 FORMAT_MESSAGE_FROM_SYSTEM; 1936 1937 if (error >= NERR_BASE && error <= MAX_NERR) { 1938 module = LoadLibraryExW(L"netmsg.dll", NULL, LOAD_LIBRARY_AS_DATAFILE); 1939 1940 if (module != NULL) { 1941 flags |= FORMAT_MESSAGE_FROM_HMODULE; 1942 } 1943 } 1944 1945 FormatMessageW(flags, module, error, 0, (LPWSTR)&msg, 0, NULL); 1946 1947 if (msg != NULL) { 1948 nchars = wcslen(msg); 1949 1950 if (nchars >= 2 && 1951 msg[nchars - 1] == L'\n' && 1952 msg[nchars - 2] == L'\r') { 1953 msg[nchars - 2] = L'\0'; 1954 } 1955 1956 retval = g_utf16_to_utf8(msg, -1, NULL, NULL, NULL); 1957 1958 LocalFree(msg); 1959 } 1960 1961 if (module != NULL) { 1962 FreeLibrary(module); 1963 } 1964 1965 return retval; 1966 } 1967 1968 void qmp_guest_set_user_password(const char *username, 1969 const char *password, 1970 bool crypted, 1971 Error **errp) 1972 { 1973 NET_API_STATUS nas; 1974 char *rawpasswddata = NULL; 1975 size_t rawpasswdlen; 1976 wchar_t *user = NULL, *wpass = NULL; 1977 USER_INFO_1003 pi1003 = { 0, }; 1978 GError *gerr = NULL; 1979 1980 if (crypted) { 1981 error_setg(errp, QERR_UNSUPPORTED); 1982 return; 1983 } 1984 1985 rawpasswddata = (char *)qbase64_decode(password, -1, &rawpasswdlen, errp); 1986 if (!rawpasswddata) { 1987 return; 1988 } 1989 rawpasswddata = g_renew(char, rawpasswddata, rawpasswdlen + 1); 1990 rawpasswddata[rawpasswdlen] = '\0'; 1991 1992 user = g_utf8_to_utf16(username, -1, NULL, NULL, &gerr); 1993 if (!user) { 1994 goto done; 1995 } 1996 1997 wpass = g_utf8_to_utf16(rawpasswddata, -1, NULL, NULL, &gerr); 1998 if (!wpass) { 1999 goto done; 2000 } 2001 2002 pi1003.usri1003_password = wpass; 2003 nas = NetUserSetInfo(NULL, user, 2004 1003, (LPBYTE)&pi1003, 2005 NULL); 2006 2007 if (nas != NERR_Success) { 2008 gchar *msg = get_net_error_message(nas); 2009 error_setg(errp, "failed to set password: %s", msg); 2010 g_free(msg); 2011 } 2012 2013 done: 2014 if (gerr) { 2015 error_setg(errp, QERR_QGA_COMMAND_FAILED, gerr->message); 2016 g_error_free(gerr); 2017 } 2018 g_free(user); 2019 g_free(wpass); 2020 g_free(rawpasswddata); 2021 } 2022 2023 GuestMemoryBlockList *qmp_guest_get_memory_blocks(Error **errp) 2024 { 2025 error_setg(errp, QERR_UNSUPPORTED); 2026 return NULL; 2027 } 2028 2029 GuestMemoryBlockResponseList * 2030 qmp_guest_set_memory_blocks(GuestMemoryBlockList *mem_blks, Error **errp) 2031 { 2032 error_setg(errp, QERR_UNSUPPORTED); 2033 return NULL; 2034 } 2035 2036 GuestMemoryBlockInfo *qmp_guest_get_memory_block_info(Error **errp) 2037 { 2038 error_setg(errp, QERR_UNSUPPORTED); 2039 return NULL; 2040 } 2041 2042 /* add unsupported commands to the blacklist */ 2043 GList *ga_command_blacklist_init(GList *blacklist) 2044 { 2045 const char *list_unsupported[] = { 2046 "guest-suspend-hybrid", 2047 "guest-set-vcpus", 2048 "guest-get-memory-blocks", "guest-set-memory-blocks", 2049 "guest-get-memory-block-size", "guest-get-memory-block-info", 2050 NULL}; 2051 char **p = (char **)list_unsupported; 2052 2053 while (*p) { 2054 blacklist = g_list_append(blacklist, g_strdup(*p++)); 2055 } 2056 2057 if (!vss_init(true)) { 2058 g_debug("vss_init failed, vss commands are going to be disabled"); 2059 const char *list[] = { 2060 "guest-get-fsinfo", "guest-fsfreeze-status", 2061 "guest-fsfreeze-freeze", "guest-fsfreeze-thaw", NULL}; 2062 p = (char **)list; 2063 2064 while (*p) { 2065 blacklist = g_list_append(blacklist, g_strdup(*p++)); 2066 } 2067 } 2068 2069 return blacklist; 2070 } 2071 2072 /* register init/cleanup routines for stateful command groups */ 2073 void ga_command_state_init(GAState *s, GACommandState *cs) 2074 { 2075 if (!vss_initialized()) { 2076 ga_command_state_add(cs, NULL, guest_fsfreeze_cleanup); 2077 } 2078 } 2079 2080 /* MINGW is missing two fields: IncomingFrames & OutgoingFrames */ 2081 typedef struct _GA_WTSINFOA { 2082 WTS_CONNECTSTATE_CLASS State; 2083 DWORD SessionId; 2084 DWORD IncomingBytes; 2085 DWORD OutgoingBytes; 2086 DWORD IncomingFrames; 2087 DWORD OutgoingFrames; 2088 DWORD IncomingCompressedBytes; 2089 DWORD OutgoingCompressedBy; 2090 CHAR WinStationName[WINSTATIONNAME_LENGTH]; 2091 CHAR Domain[DOMAIN_LENGTH]; 2092 CHAR UserName[USERNAME_LENGTH + 1]; 2093 LARGE_INTEGER ConnectTime; 2094 LARGE_INTEGER DisconnectTime; 2095 LARGE_INTEGER LastInputTime; 2096 LARGE_INTEGER LogonTime; 2097 LARGE_INTEGER CurrentTime; 2098 2099 } GA_WTSINFOA; 2100 2101 GuestUserList *qmp_guest_get_users(Error **errp) 2102 { 2103 #define QGA_NANOSECONDS 10000000 2104 2105 GHashTable *cache = NULL; 2106 GuestUserList *head = NULL, *cur_item = NULL; 2107 2108 DWORD buffer_size = 0, count = 0, i = 0; 2109 GA_WTSINFOA *info = NULL; 2110 WTS_SESSION_INFOA *entries = NULL; 2111 GuestUserList *item = NULL; 2112 GuestUser *user = NULL; 2113 gpointer value = NULL; 2114 INT64 login = 0; 2115 double login_time = 0; 2116 2117 cache = g_hash_table_new(g_str_hash, g_str_equal); 2118 2119 if (WTSEnumerateSessionsA(NULL, 0, 1, &entries, &count)) { 2120 for (i = 0; i < count; ++i) { 2121 buffer_size = 0; 2122 info = NULL; 2123 if (WTSQuerySessionInformationA( 2124 NULL, 2125 entries[i].SessionId, 2126 WTSSessionInfo, 2127 (LPSTR *)&info, 2128 &buffer_size 2129 )) { 2130 2131 if (strlen(info->UserName) == 0) { 2132 WTSFreeMemory(info); 2133 continue; 2134 } 2135 2136 login = info->LogonTime.QuadPart; 2137 login -= W32_FT_OFFSET; 2138 login_time = ((double)login) / QGA_NANOSECONDS; 2139 2140 if (g_hash_table_contains(cache, info->UserName)) { 2141 value = g_hash_table_lookup(cache, info->UserName); 2142 user = (GuestUser *)value; 2143 if (user->login_time > login_time) { 2144 user->login_time = login_time; 2145 } 2146 } else { 2147 item = g_new0(GuestUserList, 1); 2148 item->value = g_new0(GuestUser, 1); 2149 2150 item->value->user = g_strdup(info->UserName); 2151 item->value->domain = g_strdup(info->Domain); 2152 item->value->has_domain = true; 2153 2154 item->value->login_time = login_time; 2155 2156 g_hash_table_add(cache, item->value->user); 2157 2158 if (!cur_item) { 2159 head = cur_item = item; 2160 } else { 2161 cur_item->next = item; 2162 cur_item = item; 2163 } 2164 } 2165 } 2166 WTSFreeMemory(info); 2167 } 2168 WTSFreeMemory(entries); 2169 } 2170 g_hash_table_destroy(cache); 2171 return head; 2172 } 2173 2174 typedef struct _ga_matrix_lookup_t { 2175 int major; 2176 int minor; 2177 char const *version; 2178 char const *version_id; 2179 } ga_matrix_lookup_t; 2180 2181 static ga_matrix_lookup_t const WIN_VERSION_MATRIX[2][8] = { 2182 { 2183 /* Desktop editions */ 2184 { 5, 0, "Microsoft Windows 2000", "2000"}, 2185 { 5, 1, "Microsoft Windows XP", "xp"}, 2186 { 6, 0, "Microsoft Windows Vista", "vista"}, 2187 { 6, 1, "Microsoft Windows 7" "7"}, 2188 { 6, 2, "Microsoft Windows 8", "8"}, 2189 { 6, 3, "Microsoft Windows 8.1", "8.1"}, 2190 {10, 0, "Microsoft Windows 10", "10"}, 2191 { 0, 0, 0} 2192 },{ 2193 /* Server editions */ 2194 { 5, 2, "Microsoft Windows Server 2003", "2003"}, 2195 { 6, 0, "Microsoft Windows Server 2008", "2008"}, 2196 { 6, 1, "Microsoft Windows Server 2008 R2", "2008r2"}, 2197 { 6, 2, "Microsoft Windows Server 2012", "2012"}, 2198 { 6, 3, "Microsoft Windows Server 2012 R2", "2012r2"}, 2199 { 0, 0, 0}, 2200 { 0, 0, 0}, 2201 { 0, 0, 0} 2202 } 2203 }; 2204 2205 typedef struct _ga_win_10_0_server_t { 2206 int final_build; 2207 char const *version; 2208 char const *version_id; 2209 } ga_win_10_0_server_t; 2210 2211 static ga_win_10_0_server_t const WIN_10_0_SERVER_VERSION_MATRIX[3] = { 2212 {14393, "Microsoft Windows Server 2016", "2016"}, 2213 {17763, "Microsoft Windows Server 2019", "2019"}, 2214 {0, 0} 2215 }; 2216 2217 static void ga_get_win_version(RTL_OSVERSIONINFOEXW *info, Error **errp) 2218 { 2219 typedef NTSTATUS(WINAPI * rtl_get_version_t)( 2220 RTL_OSVERSIONINFOEXW *os_version_info_ex); 2221 2222 info->dwOSVersionInfoSize = sizeof(RTL_OSVERSIONINFOEXW); 2223 2224 HMODULE module = GetModuleHandle("ntdll"); 2225 PVOID fun = GetProcAddress(module, "RtlGetVersion"); 2226 if (fun == NULL) { 2227 error_setg(errp, QERR_QGA_COMMAND_FAILED, 2228 "Failed to get address of RtlGetVersion"); 2229 return; 2230 } 2231 2232 rtl_get_version_t rtl_get_version = (rtl_get_version_t)fun; 2233 rtl_get_version(info); 2234 return; 2235 } 2236 2237 static char *ga_get_win_name(OSVERSIONINFOEXW const *os_version, bool id) 2238 { 2239 DWORD major = os_version->dwMajorVersion; 2240 DWORD minor = os_version->dwMinorVersion; 2241 DWORD build = os_version->dwBuildNumber; 2242 int tbl_idx = (os_version->wProductType != VER_NT_WORKSTATION); 2243 ga_matrix_lookup_t const *table = WIN_VERSION_MATRIX[tbl_idx]; 2244 ga_win_10_0_server_t const *win_10_0_table = WIN_10_0_SERVER_VERSION_MATRIX; 2245 while (table->version != NULL) { 2246 if (major == 10 && minor == 0 && tbl_idx) { 2247 while (win_10_0_table->version != NULL) { 2248 if (build <= win_10_0_table->final_build) { 2249 if (id) { 2250 return g_strdup(win_10_0_table->version_id); 2251 } else { 2252 return g_strdup(win_10_0_table->version); 2253 } 2254 } 2255 win_10_0_table++; 2256 } 2257 } else if (major == table->major && minor == table->minor) { 2258 if (id) { 2259 return g_strdup(table->version_id); 2260 } else { 2261 return g_strdup(table->version); 2262 } 2263 } 2264 ++table; 2265 } 2266 slog("failed to lookup Windows version: major=%lu, minor=%lu", 2267 major, minor); 2268 return g_strdup("N/A"); 2269 } 2270 2271 static char *ga_get_win_product_name(Error **errp) 2272 { 2273 HKEY key = NULL; 2274 DWORD size = 128; 2275 char *result = g_malloc0(size); 2276 LONG err = ERROR_SUCCESS; 2277 2278 err = RegOpenKeyA(HKEY_LOCAL_MACHINE, 2279 "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion", 2280 &key); 2281 if (err != ERROR_SUCCESS) { 2282 error_setg_win32(errp, err, "failed to open registry key"); 2283 goto fail; 2284 } 2285 2286 err = RegQueryValueExA(key, "ProductName", NULL, NULL, 2287 (LPBYTE)result, &size); 2288 if (err == ERROR_MORE_DATA) { 2289 slog("ProductName longer than expected (%lu bytes), retrying", 2290 size); 2291 g_free(result); 2292 result = NULL; 2293 if (size > 0) { 2294 result = g_malloc0(size); 2295 err = RegQueryValueExA(key, "ProductName", NULL, NULL, 2296 (LPBYTE)result, &size); 2297 } 2298 } 2299 if (err != ERROR_SUCCESS) { 2300 error_setg_win32(errp, err, "failed to retrive ProductName"); 2301 goto fail; 2302 } 2303 2304 return result; 2305 2306 fail: 2307 g_free(result); 2308 return NULL; 2309 } 2310 2311 static char *ga_get_current_arch(void) 2312 { 2313 SYSTEM_INFO info; 2314 GetNativeSystemInfo(&info); 2315 char *result = NULL; 2316 switch (info.wProcessorArchitecture) { 2317 case PROCESSOR_ARCHITECTURE_AMD64: 2318 result = g_strdup("x86_64"); 2319 break; 2320 case PROCESSOR_ARCHITECTURE_ARM: 2321 result = g_strdup("arm"); 2322 break; 2323 case PROCESSOR_ARCHITECTURE_IA64: 2324 result = g_strdup("ia64"); 2325 break; 2326 case PROCESSOR_ARCHITECTURE_INTEL: 2327 result = g_strdup("x86"); 2328 break; 2329 case PROCESSOR_ARCHITECTURE_UNKNOWN: 2330 default: 2331 slog("unknown processor architecture 0x%0x", 2332 info.wProcessorArchitecture); 2333 result = g_strdup("unknown"); 2334 break; 2335 } 2336 return result; 2337 } 2338 2339 GuestOSInfo *qmp_guest_get_osinfo(Error **errp) 2340 { 2341 Error *local_err = NULL; 2342 OSVERSIONINFOEXW os_version = {0}; 2343 bool server; 2344 char *product_name; 2345 GuestOSInfo *info; 2346 2347 ga_get_win_version(&os_version, &local_err); 2348 if (local_err) { 2349 error_propagate(errp, local_err); 2350 return NULL; 2351 } 2352 2353 server = os_version.wProductType != VER_NT_WORKSTATION; 2354 product_name = ga_get_win_product_name(errp); 2355 if (product_name == NULL) { 2356 return NULL; 2357 } 2358 2359 info = g_new0(GuestOSInfo, 1); 2360 2361 info->has_kernel_version = true; 2362 info->kernel_version = g_strdup_printf("%lu.%lu", 2363 os_version.dwMajorVersion, 2364 os_version.dwMinorVersion); 2365 info->has_kernel_release = true; 2366 info->kernel_release = g_strdup_printf("%lu", 2367 os_version.dwBuildNumber); 2368 info->has_machine = true; 2369 info->machine = ga_get_current_arch(); 2370 2371 info->has_id = true; 2372 info->id = g_strdup("mswindows"); 2373 info->has_name = true; 2374 info->name = g_strdup("Microsoft Windows"); 2375 info->has_pretty_name = true; 2376 info->pretty_name = product_name; 2377 info->has_version = true; 2378 info->version = ga_get_win_name(&os_version, false); 2379 info->has_version_id = true; 2380 info->version_id = ga_get_win_name(&os_version, true); 2381 info->has_variant = true; 2382 info->variant = g_strdup(server ? "server" : "client"); 2383 info->has_variant_id = true; 2384 info->variant_id = g_strdup(server ? "server" : "client"); 2385 2386 return info; 2387 } 2388 2389 /* 2390 * Safely get device property. Returned strings are using wide characters. 2391 * Caller is responsible for freeing the buffer. 2392 */ 2393 static LPBYTE cm_get_property(DEVINST devInst, const DEVPROPKEY *propName, 2394 PDEVPROPTYPE propType) 2395 { 2396 CONFIGRET cr; 2397 g_autofree LPBYTE buffer = NULL; 2398 ULONG buffer_len = 0; 2399 2400 /* First query for needed space */ 2401 cr = CM_Get_DevNode_PropertyW(devInst, propName, propType, 2402 buffer, &buffer_len, 0); 2403 if (cr != CR_SUCCESS && cr != CR_BUFFER_SMALL) { 2404 2405 slog("failed to get property size, error=0x%lx", cr); 2406 return NULL; 2407 } 2408 buffer = g_new0(BYTE, buffer_len + 1); 2409 cr = CM_Get_DevNode_PropertyW(devInst, propName, propType, 2410 buffer, &buffer_len, 0); 2411 if (cr != CR_SUCCESS) { 2412 slog("failed to get device property, error=0x%lx", cr); 2413 return NULL; 2414 } 2415 return g_steal_pointer(&buffer); 2416 } 2417 2418 static GStrv ga_get_hardware_ids(DEVINST devInstance) 2419 { 2420 GArray *values = NULL; 2421 DEVPROPTYPE cm_type; 2422 LPWSTR id; 2423 g_autofree LPWSTR property = (LPWSTR)cm_get_property(devInstance, 2424 &qga_DEVPKEY_Device_HardwareIds, &cm_type); 2425 if (property == NULL) { 2426 slog("failed to get hardware IDs"); 2427 return NULL; 2428 } 2429 if (*property == '\0') { 2430 /* empty list */ 2431 return NULL; 2432 } 2433 values = g_array_new(TRUE, TRUE, sizeof(gchar *)); 2434 for (id = property; '\0' != *id; id += lstrlenW(id) + 1) { 2435 gchar *id8 = g_utf16_to_utf8(id, -1, NULL, NULL, NULL); 2436 g_array_append_val(values, id8); 2437 } 2438 return (GStrv)g_array_free(values, FALSE); 2439 } 2440 2441 /* 2442 * https://docs.microsoft.com/en-us/windows-hardware/drivers/install/identifiers-for-pci-devices 2443 */ 2444 #define DEVICE_PCI_RE "PCI\\\\VEN_(1AF4|1B36)&DEV_([0-9A-B]{4})(&|$)" 2445 2446 GuestDeviceInfoList *qmp_guest_get_devices(Error **errp) 2447 { 2448 GuestDeviceInfoList *head = NULL, *cur_item = NULL, *item = NULL; 2449 HDEVINFO dev_info = INVALID_HANDLE_VALUE; 2450 SP_DEVINFO_DATA dev_info_data; 2451 int i, j; 2452 GError *gerr = NULL; 2453 g_autoptr(GRegex) device_pci_re = NULL; 2454 DEVPROPTYPE cm_type; 2455 2456 device_pci_re = g_regex_new(DEVICE_PCI_RE, 2457 G_REGEX_ANCHORED | G_REGEX_OPTIMIZE, 0, 2458 &gerr); 2459 g_assert(device_pci_re != NULL); 2460 2461 dev_info_data.cbSize = sizeof(SP_DEVINFO_DATA); 2462 dev_info = SetupDiGetClassDevs(0, 0, 0, DIGCF_PRESENT | DIGCF_ALLCLASSES); 2463 if (dev_info == INVALID_HANDLE_VALUE) { 2464 error_setg(errp, "failed to get device tree"); 2465 return NULL; 2466 } 2467 2468 slog("enumerating devices"); 2469 for (i = 0; SetupDiEnumDeviceInfo(dev_info, i, &dev_info_data); i++) { 2470 bool skip = true; 2471 g_autofree LPWSTR name = NULL; 2472 g_autofree LPFILETIME date = NULL; 2473 g_autofree LPWSTR version = NULL; 2474 g_auto(GStrv) hw_ids = NULL; 2475 g_autoptr(GuestDeviceInfo) device = g_new0(GuestDeviceInfo, 1); 2476 g_autofree char *vendor_id = NULL; 2477 g_autofree char *device_id = NULL; 2478 2479 name = (LPWSTR)cm_get_property(dev_info_data.DevInst, 2480 &qga_DEVPKEY_NAME, &cm_type); 2481 if (name == NULL) { 2482 slog("failed to get device description"); 2483 continue; 2484 } 2485 device->driver_name = g_utf16_to_utf8(name, -1, NULL, NULL, NULL); 2486 if (device->driver_name == NULL) { 2487 error_setg(errp, "conversion to utf8 failed (driver name)"); 2488 return NULL; 2489 } 2490 slog("querying device: %s", device->driver_name); 2491 hw_ids = ga_get_hardware_ids(dev_info_data.DevInst); 2492 if (hw_ids == NULL) { 2493 continue; 2494 } 2495 for (j = 0; hw_ids[j] != NULL; j++) { 2496 GMatchInfo *match_info; 2497 GuestDeviceIdPCI *id; 2498 if (!g_regex_match(device_pci_re, hw_ids[j], 0, &match_info)) { 2499 continue; 2500 } 2501 skip = false; 2502 2503 vendor_id = g_match_info_fetch(match_info, 1); 2504 device_id = g_match_info_fetch(match_info, 2); 2505 2506 device->id = g_new0(GuestDeviceId, 1); 2507 device->has_id = true; 2508 device->id->type = GUEST_DEVICE_TYPE_PCI; 2509 id = &device->id->u.pci; 2510 id->vendor_id = g_ascii_strtoull(vendor_id, NULL, 16); 2511 id->device_id = g_ascii_strtoull(device_id, NULL, 16); 2512 2513 g_match_info_free(match_info); 2514 break; 2515 } 2516 if (skip) { 2517 continue; 2518 } 2519 2520 version = (LPWSTR)cm_get_property(dev_info_data.DevInst, 2521 &qga_DEVPKEY_Device_DriverVersion, &cm_type); 2522 if (version == NULL) { 2523 slog("failed to get driver version"); 2524 continue; 2525 } 2526 device->driver_version = g_utf16_to_utf8(version, -1, NULL, 2527 NULL, NULL); 2528 if (device->driver_version == NULL) { 2529 error_setg(errp, "conversion to utf8 failed (driver version)"); 2530 return NULL; 2531 } 2532 device->has_driver_version = true; 2533 2534 date = (LPFILETIME)cm_get_property(dev_info_data.DevInst, 2535 &qga_DEVPKEY_Device_DriverDate, &cm_type); 2536 if (date == NULL) { 2537 slog("failed to get driver date"); 2538 continue; 2539 } 2540 device->driver_date = filetime_to_ns(date); 2541 device->has_driver_date = true; 2542 2543 slog("driver: %s\ndriver version: %" PRId64 ",%s\n", 2544 device->driver_name, device->driver_date, 2545 device->driver_version); 2546 item = g_new0(GuestDeviceInfoList, 1); 2547 item->value = g_steal_pointer(&device); 2548 if (!cur_item) { 2549 head = cur_item = item; 2550 } else { 2551 cur_item->next = item; 2552 cur_item = item; 2553 } 2554 } 2555 2556 if (dev_info != INVALID_HANDLE_VALUE) { 2557 SetupDiDestroyDeviceInfoList(dev_info); 2558 } 2559 return head; 2560 } 2561