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 #include <winioctl.h> 22 #include <ntddscsi.h> 23 #include <setupapi.h> 24 #include <cfgmgr32.h> 25 #include <initguid.h> 26 #include <devpropdef.h> 27 #include <lm.h> 28 #include <wtsapi32.h> 29 #include <wininet.h> 30 31 #include "guest-agent-core.h" 32 #include "vss-win32.h" 33 #include "qga-qapi-commands.h" 34 #include "qapi/error.h" 35 #include "qapi/qmp/qerror.h" 36 #include "qemu/queue.h" 37 #include "qemu/host-utils.h" 38 #include "qemu/base64.h" 39 #include "commands-common.h" 40 41 /* 42 * The following should be in devpkey.h, but it isn't. The key names were 43 * prefixed to avoid (future) name clashes. Once the definitions get into 44 * mingw the following lines can be removed. 45 */ 46 DEFINE_DEVPROPKEY(qga_DEVPKEY_NAME, 0xb725f130, 0x47ef, 0x101a, 0xa5, 47 0xf1, 0x02, 0x60, 0x8c, 0x9e, 0xeb, 0xac, 10); 48 /* DEVPROP_TYPE_STRING */ 49 DEFINE_DEVPROPKEY(qga_DEVPKEY_Device_HardwareIds, 0xa45c254e, 0xdf1c, 50 0x4efd, 0x80, 0x20, 0x67, 0xd1, 0x46, 0xa8, 0x50, 0xe0, 3); 51 /* DEVPROP_TYPE_STRING_LIST */ 52 DEFINE_DEVPROPKEY(qga_DEVPKEY_Device_DriverDate, 0xa8b865dd, 0x2e3d, 53 0x4094, 0xad, 0x97, 0xe5, 0x93, 0xa7, 0xc, 0x75, 0xd6, 2); 54 /* DEVPROP_TYPE_FILETIME */ 55 DEFINE_DEVPROPKEY(qga_DEVPKEY_Device_DriverVersion, 0xa8b865dd, 0x2e3d, 56 0x4094, 0xad, 0x97, 0xe5, 0x93, 0xa7, 0xc, 0x75, 0xd6, 3); 57 /* DEVPROP_TYPE_STRING */ 58 /* The CM_Get_DevNode_PropertyW prototype is only sometimes in cfgmgr32.h */ 59 #ifndef CM_Get_DevNode_Property 60 #pragma GCC diagnostic push 61 #pragma GCC diagnostic ignored "-Wredundant-decls" 62 CMAPI CONFIGRET WINAPI CM_Get_DevNode_PropertyW( 63 DEVINST dnDevInst, 64 CONST DEVPROPKEY * PropertyKey, 65 DEVPROPTYPE * PropertyType, 66 PBYTE PropertyBuffer, 67 PULONG PropertyBufferSize, 68 ULONG ulFlags 69 ); 70 #define CM_Get_DevNode_Property CM_Get_DevNode_PropertyW 71 #pragma GCC diagnostic pop 72 #endif 73 74 #ifndef SHTDN_REASON_FLAG_PLANNED 75 #define SHTDN_REASON_FLAG_PLANNED 0x80000000 76 #endif 77 78 /* multiple of 100 nanoseconds elapsed between windows baseline 79 * (1/1/1601) and Unix Epoch (1/1/1970), accounting for leap years */ 80 #define W32_FT_OFFSET (10000000ULL * 60 * 60 * 24 * \ 81 (365 * (1970 - 1601) + \ 82 (1970 - 1601) / 4 - 3)) 83 84 #define INVALID_SET_FILE_POINTER ((DWORD)-1) 85 86 struct GuestFileHandle { 87 int64_t id; 88 HANDLE fh; 89 QTAILQ_ENTRY(GuestFileHandle) next; 90 }; 91 92 static struct { 93 QTAILQ_HEAD(, GuestFileHandle) filehandles; 94 } guest_file_state = { 95 .filehandles = QTAILQ_HEAD_INITIALIZER(guest_file_state.filehandles), 96 }; 97 98 #define FILE_GENERIC_APPEND (FILE_GENERIC_WRITE & ~FILE_WRITE_DATA) 99 100 typedef struct OpenFlags { 101 const char *forms; 102 DWORD desired_access; 103 DWORD creation_disposition; 104 } OpenFlags; 105 static OpenFlags guest_file_open_modes[] = { 106 {"r", GENERIC_READ, OPEN_EXISTING}, 107 {"rb", GENERIC_READ, OPEN_EXISTING}, 108 {"w", GENERIC_WRITE, CREATE_ALWAYS}, 109 {"wb", GENERIC_WRITE, CREATE_ALWAYS}, 110 {"a", FILE_GENERIC_APPEND, OPEN_ALWAYS }, 111 {"r+", GENERIC_WRITE | GENERIC_READ, OPEN_EXISTING}, 112 {"rb+", GENERIC_WRITE | GENERIC_READ, OPEN_EXISTING}, 113 {"r+b", GENERIC_WRITE | GENERIC_READ, OPEN_EXISTING}, 114 {"w+", GENERIC_WRITE | GENERIC_READ, CREATE_ALWAYS}, 115 {"wb+", GENERIC_WRITE | GENERIC_READ, CREATE_ALWAYS}, 116 {"w+b", GENERIC_WRITE | GENERIC_READ, CREATE_ALWAYS}, 117 {"a+", FILE_GENERIC_APPEND | GENERIC_READ, OPEN_ALWAYS }, 118 {"ab+", FILE_GENERIC_APPEND | GENERIC_READ, OPEN_ALWAYS }, 119 {"a+b", FILE_GENERIC_APPEND | GENERIC_READ, OPEN_ALWAYS } 120 }; 121 122 #define debug_error(msg) do { \ 123 char *suffix = g_win32_error_message(GetLastError()); \ 124 g_debug("%s: %s", (msg), suffix); \ 125 g_free(suffix); \ 126 } while (0) 127 128 static OpenFlags *find_open_flag(const char *mode_str) 129 { 130 int mode; 131 Error **errp = NULL; 132 133 for (mode = 0; mode < ARRAY_SIZE(guest_file_open_modes); ++mode) { 134 OpenFlags *flags = guest_file_open_modes + mode; 135 136 if (strcmp(flags->forms, mode_str) == 0) { 137 return flags; 138 } 139 } 140 141 error_setg(errp, "invalid file open mode '%s'", mode_str); 142 return NULL; 143 } 144 145 static int64_t guest_file_handle_add(HANDLE fh, Error **errp) 146 { 147 GuestFileHandle *gfh; 148 int64_t handle; 149 150 handle = ga_get_fd_handle(ga_state, errp); 151 if (handle < 0) { 152 return -1; 153 } 154 gfh = g_new0(GuestFileHandle, 1); 155 gfh->id = handle; 156 gfh->fh = fh; 157 QTAILQ_INSERT_TAIL(&guest_file_state.filehandles, gfh, next); 158 159 return handle; 160 } 161 162 GuestFileHandle *guest_file_handle_find(int64_t id, Error **errp) 163 { 164 GuestFileHandle *gfh; 165 QTAILQ_FOREACH(gfh, &guest_file_state.filehandles, next) { 166 if (gfh->id == id) { 167 return gfh; 168 } 169 } 170 error_setg(errp, "handle '%" PRId64 "' has not been found", id); 171 return NULL; 172 } 173 174 static void handle_set_nonblocking(HANDLE fh) 175 { 176 DWORD file_type, pipe_state; 177 file_type = GetFileType(fh); 178 if (file_type != FILE_TYPE_PIPE) { 179 return; 180 } 181 /* If file_type == FILE_TYPE_PIPE, according to MSDN 182 * the specified file is socket or named pipe */ 183 if (!GetNamedPipeHandleState(fh, &pipe_state, NULL, 184 NULL, NULL, NULL, 0)) { 185 return; 186 } 187 /* The fd is named pipe fd */ 188 if (pipe_state & PIPE_NOWAIT) { 189 return; 190 } 191 192 pipe_state |= PIPE_NOWAIT; 193 SetNamedPipeHandleState(fh, &pipe_state, NULL, NULL); 194 } 195 196 int64_t qmp_guest_file_open(const char *path, bool has_mode, 197 const char *mode, Error **errp) 198 { 199 int64_t fd = -1; 200 HANDLE fh; 201 HANDLE templ_file = NULL; 202 DWORD share_mode = FILE_SHARE_READ; 203 DWORD flags_and_attr = FILE_ATTRIBUTE_NORMAL; 204 LPSECURITY_ATTRIBUTES sa_attr = NULL; 205 OpenFlags *guest_flags; 206 GError *gerr = NULL; 207 wchar_t *w_path = NULL; 208 209 if (!has_mode) { 210 mode = "r"; 211 } 212 slog("guest-file-open called, filepath: %s, mode: %s", path, mode); 213 guest_flags = find_open_flag(mode); 214 if (guest_flags == NULL) { 215 error_setg(errp, "invalid file open mode"); 216 goto done; 217 } 218 219 w_path = g_utf8_to_utf16(path, -1, NULL, NULL, &gerr); 220 if (!w_path) { 221 goto done; 222 } 223 224 fh = CreateFileW(w_path, guest_flags->desired_access, share_mode, sa_attr, 225 guest_flags->creation_disposition, flags_and_attr, 226 templ_file); 227 if (fh == INVALID_HANDLE_VALUE) { 228 error_setg_win32(errp, GetLastError(), "failed to open file '%s'", 229 path); 230 goto done; 231 } 232 233 /* set fd non-blocking to avoid common use cases (like reading from a 234 * named pipe) from hanging the agent 235 */ 236 handle_set_nonblocking(fh); 237 238 fd = guest_file_handle_add(fh, errp); 239 if (fd < 0) { 240 CloseHandle(fh); 241 error_setg(errp, "failed to add handle to qmp handle table"); 242 goto done; 243 } 244 245 slog("guest-file-open, handle: % " PRId64, fd); 246 247 done: 248 if (gerr) { 249 error_setg(errp, QERR_QGA_COMMAND_FAILED, gerr->message); 250 g_error_free(gerr); 251 } 252 g_free(w_path); 253 return fd; 254 } 255 256 void qmp_guest_file_close(int64_t handle, Error **errp) 257 { 258 bool ret; 259 GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 260 slog("guest-file-close called, handle: %" PRId64, handle); 261 if (gfh == NULL) { 262 return; 263 } 264 ret = CloseHandle(gfh->fh); 265 if (!ret) { 266 error_setg_win32(errp, GetLastError(), "failed close handle"); 267 return; 268 } 269 270 QTAILQ_REMOVE(&guest_file_state.filehandles, gfh, next); 271 g_free(gfh); 272 } 273 274 static void acquire_privilege(const char *name, Error **errp) 275 { 276 HANDLE token = NULL; 277 TOKEN_PRIVILEGES priv; 278 Error *local_err = NULL; 279 280 if (OpenProcessToken(GetCurrentProcess(), 281 TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &token)) 282 { 283 if (!LookupPrivilegeValue(NULL, name, &priv.Privileges[0].Luid)) { 284 error_setg(&local_err, QERR_QGA_COMMAND_FAILED, 285 "no luid for requested privilege"); 286 goto out; 287 } 288 289 priv.PrivilegeCount = 1; 290 priv.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED; 291 292 if (!AdjustTokenPrivileges(token, FALSE, &priv, 0, NULL, 0)) { 293 error_setg(&local_err, QERR_QGA_COMMAND_FAILED, 294 "unable to acquire requested privilege"); 295 goto out; 296 } 297 298 } else { 299 error_setg(&local_err, QERR_QGA_COMMAND_FAILED, 300 "failed to open privilege token"); 301 } 302 303 out: 304 if (token) { 305 CloseHandle(token); 306 } 307 error_propagate(errp, local_err); 308 } 309 310 static void execute_async(DWORD WINAPI (*func)(LPVOID), LPVOID opaque, 311 Error **errp) 312 { 313 HANDLE thread = CreateThread(NULL, 0, func, opaque, 0, NULL); 314 if (!thread) { 315 error_setg(errp, QERR_QGA_COMMAND_FAILED, 316 "failed to dispatch asynchronous command"); 317 } 318 } 319 320 void qmp_guest_shutdown(bool has_mode, const char *mode, Error **errp) 321 { 322 Error *local_err = NULL; 323 UINT shutdown_flag = EWX_FORCE; 324 325 slog("guest-shutdown called, mode: %s", mode); 326 327 if (!has_mode || strcmp(mode, "powerdown") == 0) { 328 shutdown_flag |= EWX_POWEROFF; 329 } else if (strcmp(mode, "halt") == 0) { 330 shutdown_flag |= EWX_SHUTDOWN; 331 } else if (strcmp(mode, "reboot") == 0) { 332 shutdown_flag |= EWX_REBOOT; 333 } else { 334 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "mode", 335 "'halt', 'powerdown', or 'reboot'"); 336 return; 337 } 338 339 /* Request a shutdown privilege, but try to shut down the system 340 anyway. */ 341 acquire_privilege(SE_SHUTDOWN_NAME, &local_err); 342 if (local_err) { 343 error_propagate(errp, local_err); 344 return; 345 } 346 347 if (!ExitWindowsEx(shutdown_flag, SHTDN_REASON_FLAG_PLANNED)) { 348 g_autofree gchar *emsg = g_win32_error_message(GetLastError()); 349 slog("guest-shutdown failed: %s", emsg); 350 error_setg_win32(errp, GetLastError(), "guest-shutdown failed"); 351 } 352 } 353 354 GuestFileRead *guest_file_read_unsafe(GuestFileHandle *gfh, 355 int64_t count, Error **errp) 356 { 357 GuestFileRead *read_data = NULL; 358 guchar *buf; 359 HANDLE fh = gfh->fh; 360 bool is_ok; 361 DWORD read_count; 362 363 buf = g_malloc0(count + 1); 364 is_ok = ReadFile(fh, buf, count, &read_count, NULL); 365 if (!is_ok) { 366 error_setg_win32(errp, GetLastError(), "failed to read file"); 367 } else { 368 buf[read_count] = 0; 369 read_data = g_new0(GuestFileRead, 1); 370 read_data->count = (size_t)read_count; 371 read_data->eof = read_count == 0; 372 373 if (read_count != 0) { 374 read_data->buf_b64 = g_base64_encode(buf, read_count); 375 } 376 } 377 g_free(buf); 378 379 return read_data; 380 } 381 382 GuestFileWrite *qmp_guest_file_write(int64_t handle, const char *buf_b64, 383 bool has_count, int64_t count, 384 Error **errp) 385 { 386 GuestFileWrite *write_data = NULL; 387 guchar *buf; 388 gsize buf_len; 389 bool is_ok; 390 DWORD write_count; 391 GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 392 HANDLE fh; 393 394 if (!gfh) { 395 return NULL; 396 } 397 fh = gfh->fh; 398 buf = qbase64_decode(buf_b64, -1, &buf_len, errp); 399 if (!buf) { 400 return NULL; 401 } 402 403 if (!has_count) { 404 count = buf_len; 405 } else if (count < 0 || count > buf_len) { 406 error_setg(errp, "value '%" PRId64 407 "' is invalid for argument count", count); 408 goto done; 409 } 410 411 is_ok = WriteFile(fh, buf, count, &write_count, NULL); 412 if (!is_ok) { 413 error_setg_win32(errp, GetLastError(), "failed to write to file"); 414 slog("guest-file-write-failed, handle: %" PRId64, handle); 415 } else { 416 write_data = g_new0(GuestFileWrite, 1); 417 write_data->count = (size_t) write_count; 418 } 419 420 done: 421 g_free(buf); 422 return write_data; 423 } 424 425 GuestFileSeek *qmp_guest_file_seek(int64_t handle, int64_t offset, 426 GuestFileWhence *whence_code, 427 Error **errp) 428 { 429 GuestFileHandle *gfh; 430 GuestFileSeek *seek_data; 431 HANDLE fh; 432 LARGE_INTEGER new_pos, off_pos; 433 off_pos.QuadPart = offset; 434 BOOL res; 435 int whence; 436 Error *err = NULL; 437 438 gfh = guest_file_handle_find(handle, errp); 439 if (!gfh) { 440 return NULL; 441 } 442 443 /* We stupidly exposed 'whence':'int' in our qapi */ 444 whence = ga_parse_whence(whence_code, &err); 445 if (err) { 446 error_propagate(errp, err); 447 return NULL; 448 } 449 450 fh = gfh->fh; 451 res = SetFilePointerEx(fh, off_pos, &new_pos, whence); 452 if (!res) { 453 error_setg_win32(errp, GetLastError(), "failed to seek file"); 454 return NULL; 455 } 456 seek_data = g_new0(GuestFileSeek, 1); 457 seek_data->position = new_pos.QuadPart; 458 return seek_data; 459 } 460 461 void qmp_guest_file_flush(int64_t handle, Error **errp) 462 { 463 HANDLE fh; 464 GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 465 if (!gfh) { 466 return; 467 } 468 469 fh = gfh->fh; 470 if (!FlushFileBuffers(fh)) { 471 error_setg_win32(errp, GetLastError(), "failed to flush file"); 472 } 473 } 474 475 static GuestDiskBusType win2qemu[] = { 476 [BusTypeUnknown] = GUEST_DISK_BUS_TYPE_UNKNOWN, 477 [BusTypeScsi] = GUEST_DISK_BUS_TYPE_SCSI, 478 [BusTypeAtapi] = GUEST_DISK_BUS_TYPE_IDE, 479 [BusTypeAta] = GUEST_DISK_BUS_TYPE_IDE, 480 [BusType1394] = GUEST_DISK_BUS_TYPE_IEEE1394, 481 [BusTypeSsa] = GUEST_DISK_BUS_TYPE_SSA, 482 [BusTypeFibre] = GUEST_DISK_BUS_TYPE_SSA, 483 [BusTypeUsb] = GUEST_DISK_BUS_TYPE_USB, 484 [BusTypeRAID] = GUEST_DISK_BUS_TYPE_RAID, 485 [BusTypeiScsi] = GUEST_DISK_BUS_TYPE_ISCSI, 486 [BusTypeSas] = GUEST_DISK_BUS_TYPE_SAS, 487 [BusTypeSata] = GUEST_DISK_BUS_TYPE_SATA, 488 [BusTypeSd] = GUEST_DISK_BUS_TYPE_SD, 489 [BusTypeMmc] = GUEST_DISK_BUS_TYPE_MMC, 490 #if (_WIN32_WINNT >= 0x0601) 491 [BusTypeVirtual] = GUEST_DISK_BUS_TYPE_VIRTUAL, 492 [BusTypeFileBackedVirtual] = GUEST_DISK_BUS_TYPE_FILE_BACKED_VIRTUAL, 493 /* 494 * BusTypeSpaces currently is not suported 495 */ 496 [BusTypeSpaces] = GUEST_DISK_BUS_TYPE_UNKNOWN, 497 [BusTypeNvme] = GUEST_DISK_BUS_TYPE_NVME, 498 #endif 499 }; 500 501 static GuestDiskBusType find_bus_type(STORAGE_BUS_TYPE bus) 502 { 503 if (bus >= ARRAY_SIZE(win2qemu) || (int)bus < 0) { 504 return GUEST_DISK_BUS_TYPE_UNKNOWN; 505 } 506 return win2qemu[(int)bus]; 507 } 508 509 DEFINE_GUID(GUID_DEVINTERFACE_DISK, 510 0x53f56307L, 0xb6bf, 0x11d0, 0x94, 0xf2, 511 0x00, 0xa0, 0xc9, 0x1e, 0xfb, 0x8b); 512 DEFINE_GUID(GUID_DEVINTERFACE_STORAGEPORT, 513 0x2accfe60L, 0xc130, 0x11d2, 0xb0, 0x82, 514 0x00, 0xa0, 0xc9, 0x1e, 0xfb, 0x8b); 515 516 static void get_pci_address_for_device(GuestPCIAddress *pci, 517 HDEVINFO dev_info) 518 { 519 SP_DEVINFO_DATA dev_info_data; 520 DWORD j; 521 DWORD size; 522 bool partial_pci = false; 523 524 dev_info_data.cbSize = sizeof(SP_DEVINFO_DATA); 525 526 for (j = 0; 527 SetupDiEnumDeviceInfo(dev_info, j, &dev_info_data); 528 j++) { 529 DWORD addr, bus, ui_slot, type; 530 int func, slot; 531 size = sizeof(DWORD); 532 533 /* 534 * There is no need to allocate buffer in the next functions. The 535 * size is known and ULONG according to 536 * https://msdn.microsoft.com/en-us/library/windows/hardware/ff543095(v=vs.85).aspx 537 */ 538 if (!SetupDiGetDeviceRegistryProperty( 539 dev_info, &dev_info_data, SPDRP_BUSNUMBER, 540 &type, (PBYTE)&bus, size, NULL)) { 541 debug_error("failed to get PCI bus"); 542 bus = -1; 543 partial_pci = true; 544 } 545 546 /* 547 * The function retrieves the device's address. This value will be 548 * transformed into device function and number 549 */ 550 if (!SetupDiGetDeviceRegistryProperty( 551 dev_info, &dev_info_data, SPDRP_ADDRESS, 552 &type, (PBYTE)&addr, size, NULL)) { 553 debug_error("failed to get PCI address"); 554 addr = -1; 555 partial_pci = true; 556 } 557 558 /* 559 * This call returns UINumber of DEVICE_CAPABILITIES structure. 560 * This number is typically a user-perceived slot number. 561 */ 562 if (!SetupDiGetDeviceRegistryProperty( 563 dev_info, &dev_info_data, SPDRP_UI_NUMBER, 564 &type, (PBYTE)&ui_slot, size, NULL)) { 565 debug_error("failed to get PCI slot"); 566 ui_slot = -1; 567 partial_pci = true; 568 } 569 570 /* 571 * SetupApi gives us the same information as driver with 572 * IoGetDeviceProperty. According to Microsoft: 573 * 574 * FunctionNumber = (USHORT)((propertyAddress) & 0x0000FFFF) 575 * DeviceNumber = (USHORT)(((propertyAddress) >> 16) & 0x0000FFFF) 576 * SPDRP_ADDRESS is propertyAddress, so we do the same. 577 * 578 * https://docs.microsoft.com/en-us/windows/desktop/api/setupapi/nf-setupapi-setupdigetdeviceregistrypropertya 579 */ 580 if (partial_pci) { 581 pci->domain = -1; 582 pci->slot = -1; 583 pci->function = -1; 584 pci->bus = -1; 585 continue; 586 } else { 587 func = ((int)addr == -1) ? -1 : addr & 0x0000FFFF; 588 slot = ((int)addr == -1) ? -1 : (addr >> 16) & 0x0000FFFF; 589 if ((int)ui_slot != slot) { 590 g_debug("mismatch with reported slot values: %d vs %d", 591 (int)ui_slot, slot); 592 } 593 pci->domain = 0; 594 pci->slot = (int)ui_slot; 595 pci->function = func; 596 pci->bus = (int)bus; 597 return; 598 } 599 } 600 } 601 602 static GuestPCIAddress *get_pci_info(int number, Error **errp) 603 { 604 HDEVINFO dev_info = INVALID_HANDLE_VALUE; 605 HDEVINFO parent_dev_info = INVALID_HANDLE_VALUE; 606 607 SP_DEVINFO_DATA dev_info_data; 608 SP_DEVICE_INTERFACE_DATA dev_iface_data; 609 HANDLE dev_file; 610 int i; 611 GuestPCIAddress *pci = NULL; 612 613 pci = g_malloc0(sizeof(*pci)); 614 pci->domain = -1; 615 pci->slot = -1; 616 pci->function = -1; 617 pci->bus = -1; 618 619 dev_info = SetupDiGetClassDevs(&GUID_DEVINTERFACE_DISK, 0, 0, 620 DIGCF_PRESENT | DIGCF_DEVICEINTERFACE); 621 if (dev_info == INVALID_HANDLE_VALUE) { 622 error_setg_win32(errp, GetLastError(), "failed to get devices tree"); 623 goto end; 624 } 625 626 g_debug("enumerating devices"); 627 dev_info_data.cbSize = sizeof(SP_DEVINFO_DATA); 628 dev_iface_data.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA); 629 for (i = 0; SetupDiEnumDeviceInfo(dev_info, i, &dev_info_data); i++) { 630 g_autofree PSP_DEVICE_INTERFACE_DETAIL_DATA pdev_iface_detail_data = NULL; 631 STORAGE_DEVICE_NUMBER sdn; 632 g_autofree char *parent_dev_id = NULL; 633 SP_DEVINFO_DATA parent_dev_info_data; 634 DWORD size = 0; 635 636 g_debug("getting device path"); 637 if (SetupDiEnumDeviceInterfaces(dev_info, &dev_info_data, 638 &GUID_DEVINTERFACE_DISK, 0, 639 &dev_iface_data)) { 640 if (!SetupDiGetDeviceInterfaceDetail(dev_info, &dev_iface_data, 641 pdev_iface_detail_data, 642 size, &size, 643 &dev_info_data)) { 644 if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) { 645 pdev_iface_detail_data = g_malloc(size); 646 pdev_iface_detail_data->cbSize = 647 sizeof(*pdev_iface_detail_data); 648 } else { 649 error_setg_win32(errp, GetLastError(), 650 "failed to get device interfaces"); 651 goto end; 652 } 653 } 654 655 if (!SetupDiGetDeviceInterfaceDetail(dev_info, &dev_iface_data, 656 pdev_iface_detail_data, 657 size, &size, 658 &dev_info_data)) { 659 // pdev_iface_detail_data already is allocated 660 error_setg_win32(errp, GetLastError(), 661 "failed to get device interfaces"); 662 goto end; 663 } 664 665 dev_file = CreateFile(pdev_iface_detail_data->DevicePath, 0, 666 FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 667 NULL); 668 669 if (!DeviceIoControl(dev_file, IOCTL_STORAGE_GET_DEVICE_NUMBER, 670 NULL, 0, &sdn, sizeof(sdn), &size, NULL)) { 671 CloseHandle(dev_file); 672 error_setg_win32(errp, GetLastError(), 673 "failed to get device slot number"); 674 goto end; 675 } 676 677 CloseHandle(dev_file); 678 if (sdn.DeviceNumber != number) { 679 continue; 680 } 681 } else { 682 error_setg_win32(errp, GetLastError(), 683 "failed to get device interfaces"); 684 goto end; 685 } 686 687 g_debug("found device slot %d. Getting storage controller", number); 688 { 689 CONFIGRET cr; 690 DEVINST dev_inst, parent_dev_inst; 691 ULONG dev_id_size = 0; 692 693 size = 0; 694 if (!SetupDiGetDeviceInstanceId(dev_info, &dev_info_data, 695 parent_dev_id, size, &size)) { 696 if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) { 697 parent_dev_id = g_malloc(size); 698 } else { 699 error_setg_win32(errp, GetLastError(), 700 "failed to get device instance ID"); 701 goto end; 702 } 703 } 704 705 if (!SetupDiGetDeviceInstanceId(dev_info, &dev_info_data, 706 parent_dev_id, size, &size)) { 707 // parent_dev_id already is allocated 708 error_setg_win32(errp, GetLastError(), 709 "failed to get device instance ID"); 710 goto end; 711 } 712 713 /* 714 * CM API used here as opposed to 715 * SetupDiGetDeviceProperty(..., DEVPKEY_Device_Parent, ...) 716 * which exports are only available in mingw-w64 6+ 717 */ 718 cr = CM_Locate_DevInst(&dev_inst, parent_dev_id, 0); 719 if (cr != CR_SUCCESS) { 720 g_error("CM_Locate_DevInst failed with code %lx", cr); 721 error_setg_win32(errp, GetLastError(), 722 "failed to get device instance"); 723 goto end; 724 } 725 cr = CM_Get_Parent(&parent_dev_inst, dev_inst, 0); 726 if (cr != CR_SUCCESS) { 727 g_error("CM_Get_Parent failed with code %lx", cr); 728 error_setg_win32(errp, GetLastError(), 729 "failed to get parent device instance"); 730 goto end; 731 } 732 733 cr = CM_Get_Device_ID_Size(&dev_id_size, parent_dev_inst, 0); 734 if (cr != CR_SUCCESS) { 735 g_error("CM_Get_Device_ID_Size failed with code %lx", cr); 736 error_setg_win32(errp, GetLastError(), 737 "failed to get parent device ID length"); 738 goto end; 739 } 740 741 ++dev_id_size; 742 if (dev_id_size > size) { 743 g_free(parent_dev_id); 744 parent_dev_id = g_malloc(dev_id_size); 745 } 746 747 cr = CM_Get_Device_ID(parent_dev_inst, parent_dev_id, dev_id_size, 748 0); 749 if (cr != CR_SUCCESS) { 750 g_error("CM_Get_Device_ID failed with code %lx", cr); 751 error_setg_win32(errp, GetLastError(), 752 "failed to get parent device ID"); 753 goto end; 754 } 755 } 756 757 g_debug("querying storage controller %s for PCI information", 758 parent_dev_id); 759 parent_dev_info = 760 SetupDiGetClassDevs(&GUID_DEVINTERFACE_STORAGEPORT, parent_dev_id, 761 NULL, DIGCF_PRESENT | DIGCF_DEVICEINTERFACE); 762 763 if (parent_dev_info == INVALID_HANDLE_VALUE) { 764 error_setg_win32(errp, GetLastError(), 765 "failed to get parent device"); 766 goto end; 767 } 768 769 parent_dev_info_data.cbSize = sizeof(SP_DEVINFO_DATA); 770 if (!SetupDiEnumDeviceInfo(parent_dev_info, 0, &parent_dev_info_data)) { 771 error_setg_win32(errp, GetLastError(), 772 "failed to get parent device data"); 773 goto end; 774 } 775 776 get_pci_address_for_device(pci, parent_dev_info); 777 778 break; 779 } 780 781 end: 782 if (parent_dev_info != INVALID_HANDLE_VALUE) { 783 SetupDiDestroyDeviceInfoList(parent_dev_info); 784 } 785 if (dev_info != INVALID_HANDLE_VALUE) { 786 SetupDiDestroyDeviceInfoList(dev_info); 787 } 788 return pci; 789 } 790 791 static void get_disk_properties(HANDLE vol_h, GuestDiskAddress *disk, 792 Error **errp) 793 { 794 STORAGE_PROPERTY_QUERY query; 795 STORAGE_DEVICE_DESCRIPTOR *dev_desc, buf; 796 DWORD received; 797 ULONG size = sizeof(buf); 798 799 dev_desc = &buf; 800 query.PropertyId = StorageDeviceProperty; 801 query.QueryType = PropertyStandardQuery; 802 803 if (!DeviceIoControl(vol_h, IOCTL_STORAGE_QUERY_PROPERTY, &query, 804 sizeof(STORAGE_PROPERTY_QUERY), dev_desc, 805 size, &received, NULL)) { 806 error_setg_win32(errp, GetLastError(), "failed to get bus type"); 807 return; 808 } 809 disk->bus_type = find_bus_type(dev_desc->BusType); 810 g_debug("bus type %d", disk->bus_type); 811 812 /* Query once more. Now with long enough buffer. */ 813 size = dev_desc->Size; 814 dev_desc = g_malloc0(size); 815 if (!DeviceIoControl(vol_h, IOCTL_STORAGE_QUERY_PROPERTY, &query, 816 sizeof(STORAGE_PROPERTY_QUERY), dev_desc, 817 size, &received, NULL)) { 818 error_setg_win32(errp, GetLastError(), "failed to get serial number"); 819 g_debug("failed to get serial number"); 820 goto out_free; 821 } 822 if (dev_desc->SerialNumberOffset > 0) { 823 const char *serial; 824 size_t len; 825 826 if (dev_desc->SerialNumberOffset >= received) { 827 error_setg(errp, "failed to get serial number: offset outside the buffer"); 828 g_debug("serial number offset outside the buffer"); 829 goto out_free; 830 } 831 serial = (char *)dev_desc + dev_desc->SerialNumberOffset; 832 len = received - dev_desc->SerialNumberOffset; 833 g_debug("serial number \"%s\"", serial); 834 if (*serial != 0) { 835 disk->serial = g_strndup(serial, len); 836 disk->has_serial = true; 837 } 838 } 839 out_free: 840 g_free(dev_desc); 841 842 return; 843 } 844 845 static void get_single_disk_info(int disk_number, 846 GuestDiskAddress *disk, Error **errp) 847 { 848 SCSI_ADDRESS addr, *scsi_ad; 849 DWORD len; 850 HANDLE disk_h; 851 Error *local_err = NULL; 852 853 scsi_ad = &addr; 854 855 g_debug("getting disk info for: %s", disk->dev); 856 disk_h = CreateFile(disk->dev, 0, FILE_SHARE_READ, NULL, OPEN_EXISTING, 857 0, NULL); 858 if (disk_h == INVALID_HANDLE_VALUE) { 859 error_setg_win32(errp, GetLastError(), "failed to open disk"); 860 return; 861 } 862 863 get_disk_properties(disk_h, disk, &local_err); 864 if (local_err) { 865 error_propagate(errp, local_err); 866 goto err_close; 867 } 868 869 g_debug("bus type %d", disk->bus_type); 870 /* always set pci_controller as required by schema. get_pci_info() should 871 * report -1 values for non-PCI buses rather than fail. fail the command 872 * if that doesn't hold since that suggests some other unexpected 873 * breakage 874 */ 875 disk->pci_controller = get_pci_info(disk_number, &local_err); 876 if (local_err) { 877 error_propagate(errp, local_err); 878 goto err_close; 879 } 880 if (disk->bus_type == GUEST_DISK_BUS_TYPE_SCSI 881 || disk->bus_type == GUEST_DISK_BUS_TYPE_IDE 882 || disk->bus_type == GUEST_DISK_BUS_TYPE_RAID 883 /* This bus type is not supported before Windows Server 2003 SP1 */ 884 || disk->bus_type == GUEST_DISK_BUS_TYPE_SAS 885 ) { 886 /* We are able to use the same ioctls for different bus types 887 * according to Microsoft docs 888 * https://technet.microsoft.com/en-us/library/ee851589(v=ws.10).aspx */ 889 g_debug("getting SCSI info"); 890 if (DeviceIoControl(disk_h, IOCTL_SCSI_GET_ADDRESS, NULL, 0, scsi_ad, 891 sizeof(SCSI_ADDRESS), &len, NULL)) { 892 disk->unit = addr.Lun; 893 disk->target = addr.TargetId; 894 disk->bus = addr.PathId; 895 } 896 /* We do not set error in this case, because we still have enough 897 * information about volume. */ 898 } 899 900 err_close: 901 CloseHandle(disk_h); 902 return; 903 } 904 905 /* VSS provider works with volumes, thus there is no difference if 906 * the volume consist of spanned disks. Info about the first disk in the 907 * volume is returned for the spanned disk group (LVM) */ 908 static GuestDiskAddressList *build_guest_disk_info(char *guid, Error **errp) 909 { 910 Error *local_err = NULL; 911 GuestDiskAddressList *list = NULL; 912 GuestDiskAddress *disk = NULL; 913 int i; 914 HANDLE vol_h; 915 DWORD size; 916 PVOLUME_DISK_EXTENTS extents = NULL; 917 918 /* strip final backslash */ 919 char *name = g_strdup(guid); 920 if (g_str_has_suffix(name, "\\")) { 921 name[strlen(name) - 1] = 0; 922 } 923 924 g_debug("opening %s", name); 925 vol_h = CreateFile(name, 0, FILE_SHARE_READ, NULL, OPEN_EXISTING, 926 0, NULL); 927 if (vol_h == INVALID_HANDLE_VALUE) { 928 error_setg_win32(errp, GetLastError(), "failed to open volume"); 929 goto out; 930 } 931 932 /* Get list of extents */ 933 g_debug("getting disk extents"); 934 size = sizeof(VOLUME_DISK_EXTENTS); 935 extents = g_malloc0(size); 936 if (!DeviceIoControl(vol_h, IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS, NULL, 937 0, extents, size, &size, NULL)) { 938 DWORD last_err = GetLastError(); 939 if (last_err == ERROR_MORE_DATA) { 940 /* Try once more with big enough buffer */ 941 g_free(extents); 942 extents = g_malloc0(size); 943 if (!DeviceIoControl( 944 vol_h, IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS, NULL, 945 0, extents, size, NULL, NULL)) { 946 error_setg_win32(errp, GetLastError(), 947 "failed to get disk extents"); 948 goto out; 949 } 950 } else if (last_err == ERROR_INVALID_FUNCTION) { 951 /* Possibly CD-ROM or a shared drive. Try to pass the volume */ 952 g_debug("volume not on disk"); 953 disk = g_new0(GuestDiskAddress, 1); 954 disk->has_dev = true; 955 disk->dev = g_strdup(name); 956 get_single_disk_info(0xffffffff, disk, &local_err); 957 if (local_err) { 958 g_debug("failed to get disk info, ignoring error: %s", 959 error_get_pretty(local_err)); 960 error_free(local_err); 961 goto out; 962 } 963 QAPI_LIST_PREPEND(list, disk); 964 disk = NULL; 965 goto out; 966 } else { 967 error_setg_win32(errp, GetLastError(), 968 "failed to get disk extents"); 969 goto out; 970 } 971 } 972 g_debug("Number of extents: %lu", extents->NumberOfDiskExtents); 973 974 /* Go through each extent */ 975 for (i = 0; i < extents->NumberOfDiskExtents; i++) { 976 disk = g_new0(GuestDiskAddress, 1); 977 978 /* Disk numbers directly correspond to numbers used in UNCs 979 * 980 * See documentation for DISK_EXTENT: 981 * https://docs.microsoft.com/en-us/windows/desktop/api/winioctl/ns-winioctl-_disk_extent 982 * 983 * See also Naming Files, Paths and Namespaces: 984 * https://docs.microsoft.com/en-us/windows/desktop/FileIO/naming-a-file#win32-device-namespaces 985 */ 986 disk->has_dev = true; 987 disk->dev = g_strdup_printf("\\\\.\\PhysicalDrive%lu", 988 extents->Extents[i].DiskNumber); 989 990 get_single_disk_info(extents->Extents[i].DiskNumber, disk, &local_err); 991 if (local_err) { 992 error_propagate(errp, local_err); 993 goto out; 994 } 995 QAPI_LIST_PREPEND(list, disk); 996 disk = NULL; 997 } 998 999 1000 out: 1001 if (vol_h != INVALID_HANDLE_VALUE) { 1002 CloseHandle(vol_h); 1003 } 1004 qapi_free_GuestDiskAddress(disk); 1005 g_free(extents); 1006 g_free(name); 1007 1008 return list; 1009 } 1010 1011 GuestDiskInfoList *qmp_guest_get_disks(Error **errp) 1012 { 1013 GuestDiskInfoList *ret = NULL; 1014 HDEVINFO dev_info; 1015 SP_DEVICE_INTERFACE_DATA dev_iface_data; 1016 int i; 1017 1018 dev_info = SetupDiGetClassDevs(&GUID_DEVINTERFACE_DISK, 0, 0, 1019 DIGCF_PRESENT | DIGCF_DEVICEINTERFACE); 1020 if (dev_info == INVALID_HANDLE_VALUE) { 1021 error_setg_win32(errp, GetLastError(), "failed to get device tree"); 1022 return NULL; 1023 } 1024 1025 g_debug("enumerating devices"); 1026 dev_iface_data.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA); 1027 for (i = 0; 1028 SetupDiEnumDeviceInterfaces(dev_info, NULL, &GUID_DEVINTERFACE_DISK, 1029 i, &dev_iface_data); 1030 i++) { 1031 GuestDiskAddress *address = NULL; 1032 GuestDiskInfo *disk = NULL; 1033 Error *local_err = NULL; 1034 g_autofree PSP_DEVICE_INTERFACE_DETAIL_DATA 1035 pdev_iface_detail_data = NULL; 1036 STORAGE_DEVICE_NUMBER sdn; 1037 HANDLE dev_file; 1038 DWORD size = 0; 1039 BOOL result; 1040 int attempt; 1041 1042 g_debug(" getting device path"); 1043 for (attempt = 0, result = FALSE; attempt < 2 && !result; attempt++) { 1044 result = SetupDiGetDeviceInterfaceDetail(dev_info, 1045 &dev_iface_data, pdev_iface_detail_data, size, &size, NULL); 1046 if (result) { 1047 break; 1048 } 1049 if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) { 1050 pdev_iface_detail_data = g_realloc(pdev_iface_detail_data, 1051 size); 1052 pdev_iface_detail_data->cbSize = 1053 sizeof(*pdev_iface_detail_data); 1054 } else { 1055 g_debug("failed to get device interface details"); 1056 break; 1057 } 1058 } 1059 if (!result) { 1060 g_debug("skipping device"); 1061 continue; 1062 } 1063 1064 g_debug(" device: %s", pdev_iface_detail_data->DevicePath); 1065 dev_file = CreateFile(pdev_iface_detail_data->DevicePath, 0, 1066 FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, NULL); 1067 if (!DeviceIoControl(dev_file, IOCTL_STORAGE_GET_DEVICE_NUMBER, 1068 NULL, 0, &sdn, sizeof(sdn), &size, NULL)) { 1069 CloseHandle(dev_file); 1070 debug_error("failed to get storage device number"); 1071 continue; 1072 } 1073 CloseHandle(dev_file); 1074 1075 disk = g_new0(GuestDiskInfo, 1); 1076 disk->name = g_strdup_printf("\\\\.\\PhysicalDrive%lu", 1077 sdn.DeviceNumber); 1078 1079 g_debug(" number: %lu", sdn.DeviceNumber); 1080 address = g_new0(GuestDiskAddress, 1); 1081 address->has_dev = true; 1082 address->dev = g_strdup(disk->name); 1083 get_single_disk_info(sdn.DeviceNumber, address, &local_err); 1084 if (local_err) { 1085 g_debug("failed to get disk info: %s", 1086 error_get_pretty(local_err)); 1087 error_free(local_err); 1088 qapi_free_GuestDiskAddress(address); 1089 address = NULL; 1090 } else { 1091 disk->address = address; 1092 disk->has_address = true; 1093 } 1094 1095 QAPI_LIST_PREPEND(ret, disk); 1096 } 1097 1098 SetupDiDestroyDeviceInfoList(dev_info); 1099 return ret; 1100 } 1101 1102 static GuestFilesystemInfo *build_guest_fsinfo(char *guid, Error **errp) 1103 { 1104 DWORD info_size; 1105 char mnt, *mnt_point; 1106 wchar_t wfs_name[32]; 1107 char fs_name[32]; 1108 wchar_t vol_info[MAX_PATH + 1]; 1109 size_t len; 1110 uint64_t i64FreeBytesToCaller, i64TotalBytes, i64FreeBytes; 1111 GuestFilesystemInfo *fs = NULL; 1112 HANDLE hLocalDiskHandle = INVALID_HANDLE_VALUE; 1113 1114 GetVolumePathNamesForVolumeName(guid, (LPCH)&mnt, 0, &info_size); 1115 if (GetLastError() != ERROR_MORE_DATA) { 1116 error_setg_win32(errp, GetLastError(), "failed to get volume name"); 1117 return NULL; 1118 } 1119 1120 mnt_point = g_malloc(info_size + 1); 1121 if (!GetVolumePathNamesForVolumeName(guid, mnt_point, info_size, 1122 &info_size)) { 1123 error_setg_win32(errp, GetLastError(), "failed to get volume name"); 1124 goto free; 1125 } 1126 1127 hLocalDiskHandle = CreateFile(guid, 0 , 0, NULL, OPEN_EXISTING, 1128 FILE_ATTRIBUTE_NORMAL | 1129 FILE_FLAG_BACKUP_SEMANTICS, NULL); 1130 if (INVALID_HANDLE_VALUE == hLocalDiskHandle) { 1131 error_setg_win32(errp, GetLastError(), "failed to get handle for volume"); 1132 goto free; 1133 } 1134 1135 len = strlen(mnt_point); 1136 mnt_point[len] = '\\'; 1137 mnt_point[len + 1] = 0; 1138 1139 if (!GetVolumeInformationByHandleW(hLocalDiskHandle, vol_info, 1140 sizeof(vol_info), NULL, NULL, NULL, 1141 (LPWSTR) & wfs_name, sizeof(wfs_name))) { 1142 if (GetLastError() != ERROR_NOT_READY) { 1143 error_setg_win32(errp, GetLastError(), "failed to get volume info"); 1144 } 1145 goto free; 1146 } 1147 1148 fs = g_malloc(sizeof(*fs)); 1149 fs->name = g_strdup(guid); 1150 fs->has_total_bytes = false; 1151 fs->has_used_bytes = false; 1152 if (len == 0) { 1153 fs->mountpoint = g_strdup("System Reserved"); 1154 } else { 1155 fs->mountpoint = g_strndup(mnt_point, len); 1156 if (GetDiskFreeSpaceEx(fs->mountpoint, 1157 (PULARGE_INTEGER) & i64FreeBytesToCaller, 1158 (PULARGE_INTEGER) & i64TotalBytes, 1159 (PULARGE_INTEGER) & i64FreeBytes)) { 1160 fs->used_bytes = i64TotalBytes - i64FreeBytes; 1161 fs->total_bytes = i64TotalBytes; 1162 fs->has_total_bytes = true; 1163 fs->has_used_bytes = true; 1164 } 1165 } 1166 wcstombs(fs_name, wfs_name, sizeof(wfs_name)); 1167 fs->type = g_strdup(fs_name); 1168 fs->disk = build_guest_disk_info(guid, errp); 1169 free: 1170 if (hLocalDiskHandle != INVALID_HANDLE_VALUE) { 1171 CloseHandle(hLocalDiskHandle); 1172 } 1173 g_free(mnt_point); 1174 return fs; 1175 } 1176 1177 GuestFilesystemInfoList *qmp_guest_get_fsinfo(Error **errp) 1178 { 1179 HANDLE vol_h; 1180 GuestFilesystemInfoList *ret = NULL; 1181 char guid[256]; 1182 1183 vol_h = FindFirstVolume(guid, sizeof(guid)); 1184 if (vol_h == INVALID_HANDLE_VALUE) { 1185 error_setg_win32(errp, GetLastError(), "failed to find any volume"); 1186 return NULL; 1187 } 1188 1189 do { 1190 Error *local_err = NULL; 1191 GuestFilesystemInfo *info = build_guest_fsinfo(guid, &local_err); 1192 if (local_err) { 1193 g_debug("failed to get filesystem info, ignoring error: %s", 1194 error_get_pretty(local_err)); 1195 error_free(local_err); 1196 continue; 1197 } 1198 QAPI_LIST_PREPEND(ret, info); 1199 } while (FindNextVolume(vol_h, guid, sizeof(guid))); 1200 1201 if (GetLastError() != ERROR_NO_MORE_FILES) { 1202 error_setg_win32(errp, GetLastError(), "failed to find next volume"); 1203 } 1204 1205 FindVolumeClose(vol_h); 1206 return ret; 1207 } 1208 1209 /* 1210 * Return status of freeze/thaw 1211 */ 1212 GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **errp) 1213 { 1214 if (!vss_initialized()) { 1215 error_setg(errp, QERR_UNSUPPORTED); 1216 return 0; 1217 } 1218 1219 if (ga_is_frozen(ga_state)) { 1220 return GUEST_FSFREEZE_STATUS_FROZEN; 1221 } 1222 1223 return GUEST_FSFREEZE_STATUS_THAWED; 1224 } 1225 1226 /* 1227 * Freeze local file systems using Volume Shadow-copy Service. 1228 * The frozen state is limited for up to 10 seconds by VSS. 1229 */ 1230 int64_t qmp_guest_fsfreeze_freeze(Error **errp) 1231 { 1232 return qmp_guest_fsfreeze_freeze_list(false, NULL, errp); 1233 } 1234 1235 int64_t qmp_guest_fsfreeze_freeze_list(bool has_mountpoints, 1236 strList *mountpoints, 1237 Error **errp) 1238 { 1239 int i; 1240 Error *local_err = NULL; 1241 1242 if (!vss_initialized()) { 1243 error_setg(errp, QERR_UNSUPPORTED); 1244 return 0; 1245 } 1246 1247 slog("guest-fsfreeze called"); 1248 1249 /* cannot risk guest agent blocking itself on a write in this state */ 1250 ga_set_frozen(ga_state); 1251 1252 qga_vss_fsfreeze(&i, true, mountpoints, &local_err); 1253 if (local_err) { 1254 error_propagate(errp, local_err); 1255 goto error; 1256 } 1257 1258 return i; 1259 1260 error: 1261 local_err = NULL; 1262 qmp_guest_fsfreeze_thaw(&local_err); 1263 if (local_err) { 1264 g_debug("cleanup thaw: %s", error_get_pretty(local_err)); 1265 error_free(local_err); 1266 } 1267 return 0; 1268 } 1269 1270 /* 1271 * Thaw local file systems using Volume Shadow-copy Service. 1272 */ 1273 int64_t qmp_guest_fsfreeze_thaw(Error **errp) 1274 { 1275 int i; 1276 1277 if (!vss_initialized()) { 1278 error_setg(errp, QERR_UNSUPPORTED); 1279 return 0; 1280 } 1281 1282 qga_vss_fsfreeze(&i, false, NULL, errp); 1283 1284 ga_unset_frozen(ga_state); 1285 return i; 1286 } 1287 1288 static void guest_fsfreeze_cleanup(void) 1289 { 1290 Error *err = NULL; 1291 1292 if (!vss_initialized()) { 1293 return; 1294 } 1295 1296 if (ga_is_frozen(ga_state) == GUEST_FSFREEZE_STATUS_FROZEN) { 1297 qmp_guest_fsfreeze_thaw(&err); 1298 if (err) { 1299 slog("failed to clean up frozen filesystems: %s", 1300 error_get_pretty(err)); 1301 error_free(err); 1302 } 1303 } 1304 1305 vss_deinit(true); 1306 } 1307 1308 /* 1309 * Walk list of mounted file systems in the guest, and discard unused 1310 * areas. 1311 */ 1312 GuestFilesystemTrimResponse * 1313 qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp) 1314 { 1315 GuestFilesystemTrimResponse *resp; 1316 HANDLE handle; 1317 WCHAR guid[MAX_PATH] = L""; 1318 OSVERSIONINFO osvi; 1319 BOOL win8_or_later; 1320 1321 ZeroMemory(&osvi, sizeof(OSVERSIONINFO)); 1322 osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO); 1323 GetVersionEx(&osvi); 1324 win8_or_later = (osvi.dwMajorVersion > 6 || 1325 ((osvi.dwMajorVersion == 6) && 1326 (osvi.dwMinorVersion >= 2))); 1327 if (!win8_or_later) { 1328 error_setg(errp, "fstrim is only supported for Win8+"); 1329 return NULL; 1330 } 1331 1332 handle = FindFirstVolumeW(guid, ARRAYSIZE(guid)); 1333 if (handle == INVALID_HANDLE_VALUE) { 1334 error_setg_win32(errp, GetLastError(), "failed to find any volume"); 1335 return NULL; 1336 } 1337 1338 resp = g_new0(GuestFilesystemTrimResponse, 1); 1339 1340 do { 1341 GuestFilesystemTrimResult *res; 1342 PWCHAR uc_path; 1343 DWORD char_count = 0; 1344 char *path, *out; 1345 GError *gerr = NULL; 1346 gchar *argv[4]; 1347 1348 GetVolumePathNamesForVolumeNameW(guid, NULL, 0, &char_count); 1349 1350 if (GetLastError() != ERROR_MORE_DATA) { 1351 continue; 1352 } 1353 if (GetDriveTypeW(guid) != DRIVE_FIXED) { 1354 continue; 1355 } 1356 1357 uc_path = g_new(WCHAR, char_count); 1358 if (!GetVolumePathNamesForVolumeNameW(guid, uc_path, char_count, 1359 &char_count) || !*uc_path) { 1360 /* strange, but this condition could be faced even with size == 2 */ 1361 g_free(uc_path); 1362 continue; 1363 } 1364 1365 res = g_new0(GuestFilesystemTrimResult, 1); 1366 1367 path = g_utf16_to_utf8(uc_path, char_count, NULL, NULL, &gerr); 1368 1369 g_free(uc_path); 1370 1371 if (!path) { 1372 res->has_error = true; 1373 res->error = g_strdup(gerr->message); 1374 g_error_free(gerr); 1375 break; 1376 } 1377 1378 res->path = path; 1379 1380 QAPI_LIST_PREPEND(resp->paths, res); 1381 1382 memset(argv, 0, sizeof(argv)); 1383 argv[0] = (gchar *)"defrag.exe"; 1384 argv[1] = (gchar *)"/L"; 1385 argv[2] = path; 1386 1387 if (!g_spawn_sync(NULL, argv, NULL, G_SPAWN_SEARCH_PATH, NULL, NULL, 1388 &out /* stdout */, NULL /* stdin */, 1389 NULL, &gerr)) { 1390 res->has_error = true; 1391 res->error = g_strdup(gerr->message); 1392 g_error_free(gerr); 1393 } else { 1394 /* defrag.exe is UGLY. Exit code is ALWAYS zero. 1395 Error is reported in the output with something like 1396 (x89000020) etc code in the stdout */ 1397 1398 int i; 1399 gchar **lines = g_strsplit(out, "\r\n", 0); 1400 g_free(out); 1401 1402 for (i = 0; lines[i] != NULL; i++) { 1403 if (g_strstr_len(lines[i], -1, "(0x") == NULL) { 1404 continue; 1405 } 1406 res->has_error = true; 1407 res->error = g_strdup(lines[i]); 1408 break; 1409 } 1410 g_strfreev(lines); 1411 } 1412 } while (FindNextVolumeW(handle, guid, ARRAYSIZE(guid))); 1413 1414 FindVolumeClose(handle); 1415 return resp; 1416 } 1417 1418 typedef enum { 1419 GUEST_SUSPEND_MODE_DISK, 1420 GUEST_SUSPEND_MODE_RAM 1421 } GuestSuspendMode; 1422 1423 static void check_suspend_mode(GuestSuspendMode mode, Error **errp) 1424 { 1425 SYSTEM_POWER_CAPABILITIES sys_pwr_caps; 1426 1427 ZeroMemory(&sys_pwr_caps, sizeof(sys_pwr_caps)); 1428 if (!GetPwrCapabilities(&sys_pwr_caps)) { 1429 error_setg(errp, QERR_QGA_COMMAND_FAILED, 1430 "failed to determine guest suspend capabilities"); 1431 return; 1432 } 1433 1434 switch (mode) { 1435 case GUEST_SUSPEND_MODE_DISK: 1436 if (!sys_pwr_caps.SystemS4) { 1437 error_setg(errp, QERR_QGA_COMMAND_FAILED, 1438 "suspend-to-disk not supported by OS"); 1439 } 1440 break; 1441 case GUEST_SUSPEND_MODE_RAM: 1442 if (!sys_pwr_caps.SystemS3) { 1443 error_setg(errp, QERR_QGA_COMMAND_FAILED, 1444 "suspend-to-ram not supported by OS"); 1445 } 1446 break; 1447 default: 1448 abort(); 1449 } 1450 } 1451 1452 static DWORD WINAPI do_suspend(LPVOID opaque) 1453 { 1454 GuestSuspendMode *mode = opaque; 1455 DWORD ret = 0; 1456 1457 if (!SetSuspendState(*mode == GUEST_SUSPEND_MODE_DISK, TRUE, TRUE)) { 1458 g_autofree gchar *emsg = g_win32_error_message(GetLastError()); 1459 slog("failed to suspend guest: %s", emsg); 1460 ret = -1; 1461 } 1462 g_free(mode); 1463 return ret; 1464 } 1465 1466 void qmp_guest_suspend_disk(Error **errp) 1467 { 1468 Error *local_err = NULL; 1469 GuestSuspendMode *mode = g_new(GuestSuspendMode, 1); 1470 1471 *mode = GUEST_SUSPEND_MODE_DISK; 1472 check_suspend_mode(*mode, &local_err); 1473 if (local_err) { 1474 goto out; 1475 } 1476 acquire_privilege(SE_SHUTDOWN_NAME, &local_err); 1477 if (local_err) { 1478 goto out; 1479 } 1480 execute_async(do_suspend, mode, &local_err); 1481 1482 out: 1483 if (local_err) { 1484 error_propagate(errp, local_err); 1485 g_free(mode); 1486 } 1487 } 1488 1489 void qmp_guest_suspend_ram(Error **errp) 1490 { 1491 Error *local_err = NULL; 1492 GuestSuspendMode *mode = g_new(GuestSuspendMode, 1); 1493 1494 *mode = GUEST_SUSPEND_MODE_RAM; 1495 check_suspend_mode(*mode, &local_err); 1496 if (local_err) { 1497 goto out; 1498 } 1499 acquire_privilege(SE_SHUTDOWN_NAME, &local_err); 1500 if (local_err) { 1501 goto out; 1502 } 1503 execute_async(do_suspend, mode, &local_err); 1504 1505 out: 1506 if (local_err) { 1507 error_propagate(errp, local_err); 1508 g_free(mode); 1509 } 1510 } 1511 1512 void qmp_guest_suspend_hybrid(Error **errp) 1513 { 1514 error_setg(errp, QERR_UNSUPPORTED); 1515 } 1516 1517 static IP_ADAPTER_ADDRESSES *guest_get_adapters_addresses(Error **errp) 1518 { 1519 IP_ADAPTER_ADDRESSES *adptr_addrs = NULL; 1520 ULONG adptr_addrs_len = 0; 1521 DWORD ret; 1522 1523 /* Call the first time to get the adptr_addrs_len. */ 1524 GetAdaptersAddresses(AF_UNSPEC, GAA_FLAG_INCLUDE_PREFIX, 1525 NULL, adptr_addrs, &adptr_addrs_len); 1526 1527 adptr_addrs = g_malloc(adptr_addrs_len); 1528 ret = GetAdaptersAddresses(AF_UNSPEC, GAA_FLAG_INCLUDE_PREFIX, 1529 NULL, adptr_addrs, &adptr_addrs_len); 1530 if (ret != ERROR_SUCCESS) { 1531 error_setg_win32(errp, ret, "failed to get adapters addresses"); 1532 g_free(adptr_addrs); 1533 adptr_addrs = NULL; 1534 } 1535 return adptr_addrs; 1536 } 1537 1538 static char *guest_wctomb_dup(WCHAR *wstr) 1539 { 1540 char *str; 1541 size_t str_size; 1542 1543 str_size = WideCharToMultiByte(CP_UTF8, 0, wstr, -1, NULL, 0, NULL, NULL); 1544 /* add 1 to str_size for NULL terminator */ 1545 str = g_malloc(str_size + 1); 1546 WideCharToMultiByte(CP_UTF8, 0, wstr, -1, str, str_size, NULL, NULL); 1547 return str; 1548 } 1549 1550 static char *guest_addr_to_str(IP_ADAPTER_UNICAST_ADDRESS *ip_addr, 1551 Error **errp) 1552 { 1553 char addr_str[INET6_ADDRSTRLEN + INET_ADDRSTRLEN]; 1554 DWORD len; 1555 int ret; 1556 1557 if (ip_addr->Address.lpSockaddr->sa_family == AF_INET || 1558 ip_addr->Address.lpSockaddr->sa_family == AF_INET6) { 1559 len = sizeof(addr_str); 1560 ret = WSAAddressToString(ip_addr->Address.lpSockaddr, 1561 ip_addr->Address.iSockaddrLength, 1562 NULL, 1563 addr_str, 1564 &len); 1565 if (ret != 0) { 1566 error_setg_win32(errp, WSAGetLastError(), 1567 "failed address presentation form conversion"); 1568 return NULL; 1569 } 1570 return g_strdup(addr_str); 1571 } 1572 return NULL; 1573 } 1574 1575 static int64_t guest_ip_prefix(IP_ADAPTER_UNICAST_ADDRESS *ip_addr) 1576 { 1577 /* For Windows Vista/2008 and newer, use the OnLinkPrefixLength 1578 * field to obtain the prefix. 1579 */ 1580 return ip_addr->OnLinkPrefixLength; 1581 } 1582 1583 #define INTERFACE_PATH_BUF_SZ 512 1584 1585 static DWORD get_interface_index(const char *guid) 1586 { 1587 ULONG index; 1588 DWORD status; 1589 wchar_t wbuf[INTERFACE_PATH_BUF_SZ]; 1590 snwprintf(wbuf, INTERFACE_PATH_BUF_SZ, L"\\device\\tcpip_%s", guid); 1591 wbuf[INTERFACE_PATH_BUF_SZ - 1] = 0; 1592 status = GetAdapterIndex (wbuf, &index); 1593 if (status != NO_ERROR) { 1594 return (DWORD)~0; 1595 } else { 1596 return index; 1597 } 1598 } 1599 1600 typedef NETIOAPI_API (WINAPI *GetIfEntry2Func)(PMIB_IF_ROW2 Row); 1601 1602 static int guest_get_network_stats(const char *name, 1603 GuestNetworkInterfaceStat *stats) 1604 { 1605 OSVERSIONINFO os_ver; 1606 1607 os_ver.dwOSVersionInfoSize = sizeof(OSVERSIONINFO); 1608 GetVersionEx(&os_ver); 1609 if (os_ver.dwMajorVersion >= 6) { 1610 MIB_IF_ROW2 a_mid_ifrow; 1611 GetIfEntry2Func getifentry2_ex; 1612 DWORD if_index = 0; 1613 HMODULE module = GetModuleHandle("iphlpapi"); 1614 PVOID func = GetProcAddress(module, "GetIfEntry2"); 1615 1616 if (func == NULL) { 1617 return -1; 1618 } 1619 1620 getifentry2_ex = (GetIfEntry2Func)func; 1621 if_index = get_interface_index(name); 1622 if (if_index == (DWORD)~0) { 1623 return -1; 1624 } 1625 1626 memset(&a_mid_ifrow, 0, sizeof(a_mid_ifrow)); 1627 a_mid_ifrow.InterfaceIndex = if_index; 1628 if (NO_ERROR == getifentry2_ex(&a_mid_ifrow)) { 1629 stats->rx_bytes = a_mid_ifrow.InOctets; 1630 stats->rx_packets = a_mid_ifrow.InUcastPkts; 1631 stats->rx_errs = a_mid_ifrow.InErrors; 1632 stats->rx_dropped = a_mid_ifrow.InDiscards; 1633 stats->tx_bytes = a_mid_ifrow.OutOctets; 1634 stats->tx_packets = a_mid_ifrow.OutUcastPkts; 1635 stats->tx_errs = a_mid_ifrow.OutErrors; 1636 stats->tx_dropped = a_mid_ifrow.OutDiscards; 1637 return 0; 1638 } 1639 } 1640 return -1; 1641 } 1642 1643 GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp) 1644 { 1645 IP_ADAPTER_ADDRESSES *adptr_addrs, *addr; 1646 IP_ADAPTER_UNICAST_ADDRESS *ip_addr = NULL; 1647 GuestNetworkInterfaceList *head = NULL, **tail = &head; 1648 GuestIpAddressList *head_addr, **tail_addr; 1649 GuestNetworkInterface *info; 1650 GuestNetworkInterfaceStat *interface_stat = NULL; 1651 GuestIpAddress *address_item = NULL; 1652 unsigned char *mac_addr; 1653 char *addr_str; 1654 WORD wsa_version; 1655 WSADATA wsa_data; 1656 int ret; 1657 1658 adptr_addrs = guest_get_adapters_addresses(errp); 1659 if (adptr_addrs == NULL) { 1660 return NULL; 1661 } 1662 1663 /* Make WSA APIs available. */ 1664 wsa_version = MAKEWORD(2, 2); 1665 ret = WSAStartup(wsa_version, &wsa_data); 1666 if (ret != 0) { 1667 error_setg_win32(errp, ret, "failed socket startup"); 1668 goto out; 1669 } 1670 1671 for (addr = adptr_addrs; addr; addr = addr->Next) { 1672 info = g_malloc0(sizeof(*info)); 1673 1674 QAPI_LIST_APPEND(tail, info); 1675 1676 info->name = guest_wctomb_dup(addr->FriendlyName); 1677 1678 if (addr->PhysicalAddressLength != 0) { 1679 mac_addr = addr->PhysicalAddress; 1680 1681 info->hardware_address = 1682 g_strdup_printf("%02x:%02x:%02x:%02x:%02x:%02x", 1683 (int) mac_addr[0], (int) mac_addr[1], 1684 (int) mac_addr[2], (int) mac_addr[3], 1685 (int) mac_addr[4], (int) mac_addr[5]); 1686 1687 info->has_hardware_address = true; 1688 } 1689 1690 head_addr = NULL; 1691 tail_addr = &head_addr; 1692 for (ip_addr = addr->FirstUnicastAddress; 1693 ip_addr; 1694 ip_addr = ip_addr->Next) { 1695 addr_str = guest_addr_to_str(ip_addr, errp); 1696 if (addr_str == NULL) { 1697 continue; 1698 } 1699 1700 address_item = g_malloc0(sizeof(*address_item)); 1701 1702 QAPI_LIST_APPEND(tail_addr, address_item); 1703 1704 address_item->ip_address = addr_str; 1705 address_item->prefix = guest_ip_prefix(ip_addr); 1706 if (ip_addr->Address.lpSockaddr->sa_family == AF_INET) { 1707 address_item->ip_address_type = GUEST_IP_ADDRESS_TYPE_IPV4; 1708 } else if (ip_addr->Address.lpSockaddr->sa_family == AF_INET6) { 1709 address_item->ip_address_type = GUEST_IP_ADDRESS_TYPE_IPV6; 1710 } 1711 } 1712 if (head_addr) { 1713 info->has_ip_addresses = true; 1714 info->ip_addresses = head_addr; 1715 } 1716 if (!info->has_statistics) { 1717 interface_stat = g_malloc0(sizeof(*interface_stat)); 1718 if (guest_get_network_stats(addr->AdapterName, 1719 interface_stat) == -1) { 1720 info->has_statistics = false; 1721 g_free(interface_stat); 1722 } else { 1723 info->statistics = interface_stat; 1724 info->has_statistics = true; 1725 } 1726 } 1727 } 1728 WSACleanup(); 1729 out: 1730 g_free(adptr_addrs); 1731 return head; 1732 } 1733 1734 static int64_t filetime_to_ns(const FILETIME *tf) 1735 { 1736 return ((((int64_t)tf->dwHighDateTime << 32) | tf->dwLowDateTime) 1737 - W32_FT_OFFSET) * 100; 1738 } 1739 1740 void qmp_guest_set_time(bool has_time, int64_t time_ns, Error **errp) 1741 { 1742 Error *local_err = NULL; 1743 SYSTEMTIME ts; 1744 FILETIME tf; 1745 LONGLONG time; 1746 1747 if (!has_time) { 1748 /* Unfortunately, Windows libraries don't provide an easy way to access 1749 * RTC yet: 1750 * 1751 * https://msdn.microsoft.com/en-us/library/aa908981.aspx 1752 * 1753 * Instead, a workaround is to use the Windows win32tm command to 1754 * resync the time using the Windows Time service. 1755 */ 1756 LPVOID msg_buffer; 1757 DWORD ret_flags; 1758 1759 HRESULT hr = system("w32tm /resync /nowait"); 1760 1761 if (GetLastError() != 0) { 1762 strerror_s((LPTSTR) & msg_buffer, 0, errno); 1763 error_setg(errp, "system(...) failed: %s", (LPCTSTR)msg_buffer); 1764 } else if (hr != 0) { 1765 if (hr == HRESULT_FROM_WIN32(ERROR_SERVICE_NOT_ACTIVE)) { 1766 error_setg(errp, "Windows Time service not running on the " 1767 "guest"); 1768 } else { 1769 if (!FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | 1770 FORMAT_MESSAGE_FROM_SYSTEM | 1771 FORMAT_MESSAGE_IGNORE_INSERTS, NULL, 1772 (DWORD)hr, MAKELANGID(LANG_NEUTRAL, 1773 SUBLANG_DEFAULT), (LPTSTR) & msg_buffer, 0, 1774 NULL)) { 1775 error_setg(errp, "w32tm failed with error (0x%lx), couldn'" 1776 "t retrieve error message", hr); 1777 } else { 1778 error_setg(errp, "w32tm failed with error (0x%lx): %s", hr, 1779 (LPCTSTR)msg_buffer); 1780 LocalFree(msg_buffer); 1781 } 1782 } 1783 } else if (!InternetGetConnectedState(&ret_flags, 0)) { 1784 error_setg(errp, "No internet connection on guest, sync not " 1785 "accurate"); 1786 } 1787 return; 1788 } 1789 1790 /* Validate time passed by user. */ 1791 if (time_ns < 0 || time_ns / 100 > INT64_MAX - W32_FT_OFFSET) { 1792 error_setg(errp, "Time %" PRId64 "is invalid", time_ns); 1793 return; 1794 } 1795 1796 time = time_ns / 100 + W32_FT_OFFSET; 1797 1798 tf.dwLowDateTime = (DWORD) time; 1799 tf.dwHighDateTime = (DWORD) (time >> 32); 1800 1801 if (!FileTimeToSystemTime(&tf, &ts)) { 1802 error_setg(errp, "Failed to convert system time %d", 1803 (int)GetLastError()); 1804 return; 1805 } 1806 1807 acquire_privilege(SE_SYSTEMTIME_NAME, &local_err); 1808 if (local_err) { 1809 error_propagate(errp, local_err); 1810 return; 1811 } 1812 1813 if (!SetSystemTime(&ts)) { 1814 error_setg(errp, "Failed to set time to guest: %d", (int)GetLastError()); 1815 return; 1816 } 1817 } 1818 1819 GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp) 1820 { 1821 PSYSTEM_LOGICAL_PROCESSOR_INFORMATION pslpi, ptr; 1822 DWORD length; 1823 GuestLogicalProcessorList *head, **tail; 1824 Error *local_err = NULL; 1825 int64_t current; 1826 1827 ptr = pslpi = NULL; 1828 length = 0; 1829 current = 0; 1830 head = NULL; 1831 tail = &head; 1832 1833 if ((GetLogicalProcessorInformation(pslpi, &length) == FALSE) && 1834 (GetLastError() == ERROR_INSUFFICIENT_BUFFER) && 1835 (length > sizeof(SYSTEM_LOGICAL_PROCESSOR_INFORMATION))) { 1836 ptr = pslpi = g_malloc0(length); 1837 if (GetLogicalProcessorInformation(pslpi, &length) == FALSE) { 1838 error_setg(&local_err, "Failed to get processor information: %d", 1839 (int)GetLastError()); 1840 } 1841 } else { 1842 error_setg(&local_err, 1843 "Failed to get processor information buffer length: %d", 1844 (int)GetLastError()); 1845 } 1846 1847 while ((local_err == NULL) && (length > 0)) { 1848 if (pslpi->Relationship == RelationProcessorCore) { 1849 ULONG_PTR cpu_bits = pslpi->ProcessorMask; 1850 1851 while (cpu_bits > 0) { 1852 if (!!(cpu_bits & 1)) { 1853 GuestLogicalProcessor *vcpu; 1854 1855 vcpu = g_malloc0(sizeof *vcpu); 1856 vcpu->logical_id = current++; 1857 vcpu->online = true; 1858 vcpu->has_can_offline = true; 1859 1860 QAPI_LIST_APPEND(tail, vcpu); 1861 } 1862 cpu_bits >>= 1; 1863 } 1864 } 1865 length -= sizeof(SYSTEM_LOGICAL_PROCESSOR_INFORMATION); 1866 pslpi++; /* next entry */ 1867 } 1868 1869 g_free(ptr); 1870 1871 if (local_err == NULL) { 1872 if (head != NULL) { 1873 return head; 1874 } 1875 /* there's no guest with zero VCPUs */ 1876 error_setg(&local_err, "Guest reported zero VCPUs"); 1877 } 1878 1879 qapi_free_GuestLogicalProcessorList(head); 1880 error_propagate(errp, local_err); 1881 return NULL; 1882 } 1883 1884 int64_t qmp_guest_set_vcpus(GuestLogicalProcessorList *vcpus, Error **errp) 1885 { 1886 error_setg(errp, QERR_UNSUPPORTED); 1887 return -1; 1888 } 1889 1890 static gchar * 1891 get_net_error_message(gint error) 1892 { 1893 HMODULE module = NULL; 1894 gchar *retval = NULL; 1895 wchar_t *msg = NULL; 1896 int flags; 1897 size_t nchars; 1898 1899 flags = FORMAT_MESSAGE_ALLOCATE_BUFFER | 1900 FORMAT_MESSAGE_IGNORE_INSERTS | 1901 FORMAT_MESSAGE_FROM_SYSTEM; 1902 1903 if (error >= NERR_BASE && error <= MAX_NERR) { 1904 module = LoadLibraryExW(L"netmsg.dll", NULL, LOAD_LIBRARY_AS_DATAFILE); 1905 1906 if (module != NULL) { 1907 flags |= FORMAT_MESSAGE_FROM_HMODULE; 1908 } 1909 } 1910 1911 FormatMessageW(flags, module, error, 0, (LPWSTR)&msg, 0, NULL); 1912 1913 if (msg != NULL) { 1914 nchars = wcslen(msg); 1915 1916 if (nchars >= 2 && 1917 msg[nchars - 1] == L'\n' && 1918 msg[nchars - 2] == L'\r') { 1919 msg[nchars - 2] = L'\0'; 1920 } 1921 1922 retval = g_utf16_to_utf8(msg, -1, NULL, NULL, NULL); 1923 1924 LocalFree(msg); 1925 } 1926 1927 if (module != NULL) { 1928 FreeLibrary(module); 1929 } 1930 1931 return retval; 1932 } 1933 1934 void qmp_guest_set_user_password(const char *username, 1935 const char *password, 1936 bool crypted, 1937 Error **errp) 1938 { 1939 NET_API_STATUS nas; 1940 char *rawpasswddata = NULL; 1941 size_t rawpasswdlen; 1942 wchar_t *user = NULL, *wpass = NULL; 1943 USER_INFO_1003 pi1003 = { 0, }; 1944 GError *gerr = NULL; 1945 1946 if (crypted) { 1947 error_setg(errp, QERR_UNSUPPORTED); 1948 return; 1949 } 1950 1951 rawpasswddata = (char *)qbase64_decode(password, -1, &rawpasswdlen, errp); 1952 if (!rawpasswddata) { 1953 return; 1954 } 1955 rawpasswddata = g_renew(char, rawpasswddata, rawpasswdlen + 1); 1956 rawpasswddata[rawpasswdlen] = '\0'; 1957 1958 user = g_utf8_to_utf16(username, -1, NULL, NULL, &gerr); 1959 if (!user) { 1960 goto done; 1961 } 1962 1963 wpass = g_utf8_to_utf16(rawpasswddata, -1, NULL, NULL, &gerr); 1964 if (!wpass) { 1965 goto done; 1966 } 1967 1968 pi1003.usri1003_password = wpass; 1969 nas = NetUserSetInfo(NULL, user, 1970 1003, (LPBYTE)&pi1003, 1971 NULL); 1972 1973 if (nas != NERR_Success) { 1974 gchar *msg = get_net_error_message(nas); 1975 error_setg(errp, "failed to set password: %s", msg); 1976 g_free(msg); 1977 } 1978 1979 done: 1980 if (gerr) { 1981 error_setg(errp, QERR_QGA_COMMAND_FAILED, gerr->message); 1982 g_error_free(gerr); 1983 } 1984 g_free(user); 1985 g_free(wpass); 1986 g_free(rawpasswddata); 1987 } 1988 1989 GuestMemoryBlockList *qmp_guest_get_memory_blocks(Error **errp) 1990 { 1991 error_setg(errp, QERR_UNSUPPORTED); 1992 return NULL; 1993 } 1994 1995 GuestMemoryBlockResponseList * 1996 qmp_guest_set_memory_blocks(GuestMemoryBlockList *mem_blks, Error **errp) 1997 { 1998 error_setg(errp, QERR_UNSUPPORTED); 1999 return NULL; 2000 } 2001 2002 GuestMemoryBlockInfo *qmp_guest_get_memory_block_info(Error **errp) 2003 { 2004 error_setg(errp, QERR_UNSUPPORTED); 2005 return NULL; 2006 } 2007 2008 /* add unsupported commands to the list of blocked RPCs */ 2009 GList *ga_command_init_blockedrpcs(GList *blockedrpcs) 2010 { 2011 const char *list_unsupported[] = { 2012 "guest-suspend-hybrid", 2013 "guest-set-vcpus", 2014 "guest-get-memory-blocks", "guest-set-memory-blocks", 2015 "guest-get-memory-block-size", "guest-get-memory-block-info", 2016 NULL}; 2017 char **p = (char **)list_unsupported; 2018 2019 while (*p) { 2020 blockedrpcs = g_list_append(blockedrpcs, g_strdup(*p++)); 2021 } 2022 2023 if (!vss_init(true)) { 2024 g_debug("vss_init failed, vss commands are going to be disabled"); 2025 const char *list[] = { 2026 "guest-get-fsinfo", "guest-fsfreeze-status", 2027 "guest-fsfreeze-freeze", "guest-fsfreeze-thaw", NULL}; 2028 p = (char **)list; 2029 2030 while (*p) { 2031 blockedrpcs = g_list_append(blockedrpcs, g_strdup(*p++)); 2032 } 2033 } 2034 2035 return blockedrpcs; 2036 } 2037 2038 /* register init/cleanup routines for stateful command groups */ 2039 void ga_command_state_init(GAState *s, GACommandState *cs) 2040 { 2041 if (!vss_initialized()) { 2042 ga_command_state_add(cs, NULL, guest_fsfreeze_cleanup); 2043 } 2044 } 2045 2046 /* MINGW is missing two fields: IncomingFrames & OutgoingFrames */ 2047 typedef struct _GA_WTSINFOA { 2048 WTS_CONNECTSTATE_CLASS State; 2049 DWORD SessionId; 2050 DWORD IncomingBytes; 2051 DWORD OutgoingBytes; 2052 DWORD IncomingFrames; 2053 DWORD OutgoingFrames; 2054 DWORD IncomingCompressedBytes; 2055 DWORD OutgoingCompressedBy; 2056 CHAR WinStationName[WINSTATIONNAME_LENGTH]; 2057 CHAR Domain[DOMAIN_LENGTH]; 2058 CHAR UserName[USERNAME_LENGTH + 1]; 2059 LARGE_INTEGER ConnectTime; 2060 LARGE_INTEGER DisconnectTime; 2061 LARGE_INTEGER LastInputTime; 2062 LARGE_INTEGER LogonTime; 2063 LARGE_INTEGER CurrentTime; 2064 2065 } GA_WTSINFOA; 2066 2067 GuestUserList *qmp_guest_get_users(Error **errp) 2068 { 2069 #define QGA_NANOSECONDS 10000000 2070 2071 GHashTable *cache = NULL; 2072 GuestUserList *head = NULL, **tail = &head; 2073 2074 DWORD buffer_size = 0, count = 0, i = 0; 2075 GA_WTSINFOA *info = NULL; 2076 WTS_SESSION_INFOA *entries = NULL; 2077 GuestUser *user = NULL; 2078 gpointer value = NULL; 2079 INT64 login = 0; 2080 double login_time = 0; 2081 2082 cache = g_hash_table_new(g_str_hash, g_str_equal); 2083 2084 if (WTSEnumerateSessionsA(NULL, 0, 1, &entries, &count)) { 2085 for (i = 0; i < count; ++i) { 2086 buffer_size = 0; 2087 info = NULL; 2088 if (WTSQuerySessionInformationA( 2089 NULL, 2090 entries[i].SessionId, 2091 WTSSessionInfo, 2092 (LPSTR *)&info, 2093 &buffer_size 2094 )) { 2095 2096 if (strlen(info->UserName) == 0) { 2097 WTSFreeMemory(info); 2098 continue; 2099 } 2100 2101 login = info->LogonTime.QuadPart; 2102 login -= W32_FT_OFFSET; 2103 login_time = ((double)login) / QGA_NANOSECONDS; 2104 2105 if (g_hash_table_contains(cache, info->UserName)) { 2106 value = g_hash_table_lookup(cache, info->UserName); 2107 user = (GuestUser *)value; 2108 if (user->login_time > login_time) { 2109 user->login_time = login_time; 2110 } 2111 } else { 2112 user = g_new0(GuestUser, 1); 2113 2114 user->user = g_strdup(info->UserName); 2115 user->domain = g_strdup(info->Domain); 2116 user->has_domain = true; 2117 2118 user->login_time = login_time; 2119 2120 g_hash_table_add(cache, user->user); 2121 2122 QAPI_LIST_APPEND(tail, user); 2123 } 2124 } 2125 WTSFreeMemory(info); 2126 } 2127 WTSFreeMemory(entries); 2128 } 2129 g_hash_table_destroy(cache); 2130 return head; 2131 } 2132 2133 typedef struct _ga_matrix_lookup_t { 2134 int major; 2135 int minor; 2136 char const *version; 2137 char const *version_id; 2138 } ga_matrix_lookup_t; 2139 2140 static ga_matrix_lookup_t const WIN_VERSION_MATRIX[2][7] = { 2141 { 2142 /* Desktop editions */ 2143 { 5, 0, "Microsoft Windows 2000", "2000"}, 2144 { 5, 1, "Microsoft Windows XP", "xp"}, 2145 { 6, 0, "Microsoft Windows Vista", "vista"}, 2146 { 6, 1, "Microsoft Windows 7" "7"}, 2147 { 6, 2, "Microsoft Windows 8", "8"}, 2148 { 6, 3, "Microsoft Windows 8.1", "8.1"}, 2149 { 0, 0, 0} 2150 },{ 2151 /* Server editions */ 2152 { 5, 2, "Microsoft Windows Server 2003", "2003"}, 2153 { 6, 0, "Microsoft Windows Server 2008", "2008"}, 2154 { 6, 1, "Microsoft Windows Server 2008 R2", "2008r2"}, 2155 { 6, 2, "Microsoft Windows Server 2012", "2012"}, 2156 { 6, 3, "Microsoft Windows Server 2012 R2", "2012r2"}, 2157 { 0, 0, 0}, 2158 { 0, 0, 0} 2159 } 2160 }; 2161 2162 typedef struct _ga_win_10_0_t { 2163 int first_build; 2164 char const *version; 2165 char const *version_id; 2166 } ga_win_10_0_t; 2167 2168 static ga_win_10_0_t const WIN_10_0_SERVER_VERSION_MATRIX[4] = { 2169 {14393, "Microsoft Windows Server 2016", "2016"}, 2170 {17763, "Microsoft Windows Server 2019", "2019"}, 2171 {20344, "Microsoft Windows Server 2022", "2022"}, 2172 {0, 0} 2173 }; 2174 2175 static ga_win_10_0_t const WIN_10_0_CLIENT_VERSION_MATRIX[3] = { 2176 {10240, "Microsoft Windows 10", "10"}, 2177 {22000, "Microsoft Windows 11", "11"}, 2178 {0, 0} 2179 }; 2180 2181 static void ga_get_win_version(RTL_OSVERSIONINFOEXW *info, Error **errp) 2182 { 2183 typedef NTSTATUS(WINAPI *rtl_get_version_t)( 2184 RTL_OSVERSIONINFOEXW *os_version_info_ex); 2185 2186 info->dwOSVersionInfoSize = sizeof(RTL_OSVERSIONINFOEXW); 2187 2188 HMODULE module = GetModuleHandle("ntdll"); 2189 PVOID fun = GetProcAddress(module, "RtlGetVersion"); 2190 if (fun == NULL) { 2191 error_setg(errp, QERR_QGA_COMMAND_FAILED, 2192 "Failed to get address of RtlGetVersion"); 2193 return; 2194 } 2195 2196 rtl_get_version_t rtl_get_version = (rtl_get_version_t)fun; 2197 rtl_get_version(info); 2198 return; 2199 } 2200 2201 static char *ga_get_win_name(OSVERSIONINFOEXW const *os_version, bool id) 2202 { 2203 DWORD major = os_version->dwMajorVersion; 2204 DWORD minor = os_version->dwMinorVersion; 2205 DWORD build = os_version->dwBuildNumber; 2206 int tbl_idx = (os_version->wProductType != VER_NT_WORKSTATION); 2207 ga_matrix_lookup_t const *table = WIN_VERSION_MATRIX[tbl_idx]; 2208 ga_win_10_0_t const *win_10_0_table = tbl_idx ? 2209 WIN_10_0_SERVER_VERSION_MATRIX : WIN_10_0_CLIENT_VERSION_MATRIX; 2210 ga_win_10_0_t const *win_10_0_version = NULL; 2211 while (table->version != NULL) { 2212 if (major == 10 && minor == 0) { 2213 while (win_10_0_table->version != NULL) { 2214 if (build >= win_10_0_table->first_build) { 2215 win_10_0_version = win_10_0_table; 2216 } 2217 win_10_0_table++; 2218 } 2219 if (win_10_0_table) { 2220 if (id) { 2221 return g_strdup(win_10_0_version->version_id); 2222 } else { 2223 return g_strdup(win_10_0_version->version); 2224 } 2225 } 2226 } else if (major == table->major && minor == table->minor) { 2227 if (id) { 2228 return g_strdup(table->version_id); 2229 } else { 2230 return g_strdup(table->version); 2231 } 2232 } 2233 ++table; 2234 } 2235 slog("failed to lookup Windows version: major=%lu, minor=%lu", 2236 major, minor); 2237 return g_strdup("N/A"); 2238 } 2239 2240 static char *ga_get_win_product_name(Error **errp) 2241 { 2242 HKEY key = INVALID_HANDLE_VALUE; 2243 DWORD size = 128; 2244 char *result = g_malloc0(size); 2245 LONG err = ERROR_SUCCESS; 2246 2247 err = RegOpenKeyA(HKEY_LOCAL_MACHINE, 2248 "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion", 2249 &key); 2250 if (err != ERROR_SUCCESS) { 2251 error_setg_win32(errp, err, "failed to open registry key"); 2252 g_free(result); 2253 return NULL; 2254 } 2255 2256 err = RegQueryValueExA(key, "ProductName", NULL, NULL, 2257 (LPBYTE)result, &size); 2258 if (err == ERROR_MORE_DATA) { 2259 slog("ProductName longer than expected (%lu bytes), retrying", 2260 size); 2261 g_free(result); 2262 result = NULL; 2263 if (size > 0) { 2264 result = g_malloc0(size); 2265 err = RegQueryValueExA(key, "ProductName", NULL, NULL, 2266 (LPBYTE)result, &size); 2267 } 2268 } 2269 if (err != ERROR_SUCCESS) { 2270 error_setg_win32(errp, err, "failed to retrive ProductName"); 2271 goto fail; 2272 } 2273 2274 RegCloseKey(key); 2275 return result; 2276 2277 fail: 2278 if (key != INVALID_HANDLE_VALUE) { 2279 RegCloseKey(key); 2280 } 2281 g_free(result); 2282 return NULL; 2283 } 2284 2285 static char *ga_get_current_arch(void) 2286 { 2287 SYSTEM_INFO info; 2288 GetNativeSystemInfo(&info); 2289 char *result = NULL; 2290 switch (info.wProcessorArchitecture) { 2291 case PROCESSOR_ARCHITECTURE_AMD64: 2292 result = g_strdup("x86_64"); 2293 break; 2294 case PROCESSOR_ARCHITECTURE_ARM: 2295 result = g_strdup("arm"); 2296 break; 2297 case PROCESSOR_ARCHITECTURE_IA64: 2298 result = g_strdup("ia64"); 2299 break; 2300 case PROCESSOR_ARCHITECTURE_INTEL: 2301 result = g_strdup("x86"); 2302 break; 2303 case PROCESSOR_ARCHITECTURE_UNKNOWN: 2304 default: 2305 slog("unknown processor architecture 0x%0x", 2306 info.wProcessorArchitecture); 2307 result = g_strdup("unknown"); 2308 break; 2309 } 2310 return result; 2311 } 2312 2313 GuestOSInfo *qmp_guest_get_osinfo(Error **errp) 2314 { 2315 Error *local_err = NULL; 2316 OSVERSIONINFOEXW os_version = {0}; 2317 bool server; 2318 char *product_name; 2319 GuestOSInfo *info; 2320 2321 ga_get_win_version(&os_version, &local_err); 2322 if (local_err) { 2323 error_propagate(errp, local_err); 2324 return NULL; 2325 } 2326 2327 server = os_version.wProductType != VER_NT_WORKSTATION; 2328 product_name = ga_get_win_product_name(errp); 2329 if (product_name == NULL) { 2330 return NULL; 2331 } 2332 2333 info = g_new0(GuestOSInfo, 1); 2334 2335 info->has_kernel_version = true; 2336 info->kernel_version = g_strdup_printf("%lu.%lu", 2337 os_version.dwMajorVersion, 2338 os_version.dwMinorVersion); 2339 info->has_kernel_release = true; 2340 info->kernel_release = g_strdup_printf("%lu", 2341 os_version.dwBuildNumber); 2342 info->has_machine = true; 2343 info->machine = ga_get_current_arch(); 2344 2345 info->has_id = true; 2346 info->id = g_strdup("mswindows"); 2347 info->has_name = true; 2348 info->name = g_strdup("Microsoft Windows"); 2349 info->has_pretty_name = true; 2350 info->pretty_name = product_name; 2351 info->has_version = true; 2352 info->version = ga_get_win_name(&os_version, false); 2353 info->has_version_id = true; 2354 info->version_id = ga_get_win_name(&os_version, true); 2355 info->has_variant = true; 2356 info->variant = g_strdup(server ? "server" : "client"); 2357 info->has_variant_id = true; 2358 info->variant_id = g_strdup(server ? "server" : "client"); 2359 2360 return info; 2361 } 2362 2363 /* 2364 * Safely get device property. Returned strings are using wide characters. 2365 * Caller is responsible for freeing the buffer. 2366 */ 2367 static LPBYTE cm_get_property(DEVINST devInst, const DEVPROPKEY *propName, 2368 PDEVPROPTYPE propType) 2369 { 2370 CONFIGRET cr; 2371 g_autofree LPBYTE buffer = NULL; 2372 ULONG buffer_len = 0; 2373 2374 /* First query for needed space */ 2375 cr = CM_Get_DevNode_PropertyW(devInst, propName, propType, 2376 buffer, &buffer_len, 0); 2377 if (cr != CR_SUCCESS && cr != CR_BUFFER_SMALL) { 2378 2379 slog("failed to get property size, error=0x%lx", cr); 2380 return NULL; 2381 } 2382 buffer = g_new0(BYTE, buffer_len + 1); 2383 cr = CM_Get_DevNode_PropertyW(devInst, propName, propType, 2384 buffer, &buffer_len, 0); 2385 if (cr != CR_SUCCESS) { 2386 slog("failed to get device property, error=0x%lx", cr); 2387 return NULL; 2388 } 2389 return g_steal_pointer(&buffer); 2390 } 2391 2392 static GStrv ga_get_hardware_ids(DEVINST devInstance) 2393 { 2394 GArray *values = NULL; 2395 DEVPROPTYPE cm_type; 2396 LPWSTR id; 2397 g_autofree LPWSTR property = (LPWSTR)cm_get_property(devInstance, 2398 &qga_DEVPKEY_Device_HardwareIds, &cm_type); 2399 if (property == NULL) { 2400 slog("failed to get hardware IDs"); 2401 return NULL; 2402 } 2403 if (*property == '\0') { 2404 /* empty list */ 2405 return NULL; 2406 } 2407 values = g_array_new(TRUE, TRUE, sizeof(gchar *)); 2408 for (id = property; '\0' != *id; id += lstrlenW(id) + 1) { 2409 gchar *id8 = g_utf16_to_utf8(id, -1, NULL, NULL, NULL); 2410 g_array_append_val(values, id8); 2411 } 2412 return (GStrv)g_array_free(values, FALSE); 2413 } 2414 2415 /* 2416 * https://docs.microsoft.com/en-us/windows-hardware/drivers/install/identifiers-for-pci-devices 2417 */ 2418 #define DEVICE_PCI_RE "PCI\\\\VEN_(1AF4|1B36)&DEV_([0-9A-B]{4})(&|$)" 2419 2420 GuestDeviceInfoList *qmp_guest_get_devices(Error **errp) 2421 { 2422 GuestDeviceInfoList *head = NULL, **tail = &head; 2423 HDEVINFO dev_info = INVALID_HANDLE_VALUE; 2424 SP_DEVINFO_DATA dev_info_data; 2425 int i, j; 2426 GError *gerr = NULL; 2427 g_autoptr(GRegex) device_pci_re = NULL; 2428 DEVPROPTYPE cm_type; 2429 2430 device_pci_re = g_regex_new(DEVICE_PCI_RE, 2431 G_REGEX_ANCHORED | G_REGEX_OPTIMIZE, 0, 2432 &gerr); 2433 g_assert(device_pci_re != NULL); 2434 2435 dev_info_data.cbSize = sizeof(SP_DEVINFO_DATA); 2436 dev_info = SetupDiGetClassDevs(0, 0, 0, DIGCF_PRESENT | DIGCF_ALLCLASSES); 2437 if (dev_info == INVALID_HANDLE_VALUE) { 2438 error_setg(errp, "failed to get device tree"); 2439 return NULL; 2440 } 2441 2442 slog("enumerating devices"); 2443 for (i = 0; SetupDiEnumDeviceInfo(dev_info, i, &dev_info_data); i++) { 2444 bool skip = true; 2445 g_autofree LPWSTR name = NULL; 2446 g_autofree LPFILETIME date = NULL; 2447 g_autofree LPWSTR version = NULL; 2448 g_auto(GStrv) hw_ids = NULL; 2449 g_autoptr(GuestDeviceInfo) device = g_new0(GuestDeviceInfo, 1); 2450 g_autofree char *vendor_id = NULL; 2451 g_autofree char *device_id = NULL; 2452 2453 name = (LPWSTR)cm_get_property(dev_info_data.DevInst, 2454 &qga_DEVPKEY_NAME, &cm_type); 2455 if (name == NULL) { 2456 slog("failed to get device description"); 2457 continue; 2458 } 2459 device->driver_name = g_utf16_to_utf8(name, -1, NULL, NULL, NULL); 2460 if (device->driver_name == NULL) { 2461 error_setg(errp, "conversion to utf8 failed (driver name)"); 2462 return NULL; 2463 } 2464 slog("querying device: %s", device->driver_name); 2465 hw_ids = ga_get_hardware_ids(dev_info_data.DevInst); 2466 if (hw_ids == NULL) { 2467 continue; 2468 } 2469 for (j = 0; hw_ids[j] != NULL; j++) { 2470 g_autoptr(GMatchInfo) match_info; 2471 GuestDeviceIdPCI *id; 2472 if (!g_regex_match(device_pci_re, hw_ids[j], 0, &match_info)) { 2473 continue; 2474 } 2475 skip = false; 2476 2477 vendor_id = g_match_info_fetch(match_info, 1); 2478 device_id = g_match_info_fetch(match_info, 2); 2479 2480 device->id = g_new0(GuestDeviceId, 1); 2481 device->has_id = true; 2482 device->id->type = GUEST_DEVICE_TYPE_PCI; 2483 id = &device->id->u.pci; 2484 id->vendor_id = g_ascii_strtoull(vendor_id, NULL, 16); 2485 id->device_id = g_ascii_strtoull(device_id, NULL, 16); 2486 2487 break; 2488 } 2489 if (skip) { 2490 continue; 2491 } 2492 2493 version = (LPWSTR)cm_get_property(dev_info_data.DevInst, 2494 &qga_DEVPKEY_Device_DriverVersion, &cm_type); 2495 if (version == NULL) { 2496 slog("failed to get driver version"); 2497 continue; 2498 } 2499 device->driver_version = g_utf16_to_utf8(version, -1, NULL, 2500 NULL, NULL); 2501 if (device->driver_version == NULL) { 2502 error_setg(errp, "conversion to utf8 failed (driver version)"); 2503 return NULL; 2504 } 2505 device->has_driver_version = true; 2506 2507 date = (LPFILETIME)cm_get_property(dev_info_data.DevInst, 2508 &qga_DEVPKEY_Device_DriverDate, &cm_type); 2509 if (date == NULL) { 2510 slog("failed to get driver date"); 2511 continue; 2512 } 2513 device->driver_date = filetime_to_ns(date); 2514 device->has_driver_date = true; 2515 2516 slog("driver: %s\ndriver version: %" PRId64 ",%s\n", 2517 device->driver_name, device->driver_date, 2518 device->driver_version); 2519 QAPI_LIST_APPEND(tail, g_steal_pointer(&device)); 2520 } 2521 2522 if (dev_info != INVALID_HANDLE_VALUE) { 2523 SetupDiDestroyDeviceInfoList(dev_info); 2524 } 2525 return head; 2526 } 2527 2528 char *qga_get_host_name(Error **errp) 2529 { 2530 wchar_t tmp[MAX_COMPUTERNAME_LENGTH + 1]; 2531 DWORD size = G_N_ELEMENTS(tmp); 2532 2533 if (GetComputerNameW(tmp, &size) == 0) { 2534 error_setg_win32(errp, GetLastError(), "failed close handle"); 2535 return NULL; 2536 } 2537 2538 return g_utf16_to_utf8(tmp, size, NULL, NULL, NULL); 2539 } 2540 2541 GuestDiskStatsInfoList *qmp_guest_get_diskstats(Error **errp) 2542 { 2543 error_setg(errp, QERR_UNSUPPORTED); 2544 return NULL; 2545 } 2546 2547 GuestCpuStatsList *qmp_guest_get_cpustats(Error **errp) 2548 { 2549 error_setg(errp, QERR_UNSUPPORTED); 2550 return NULL; 2551 } 2552