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 #include <pdh.h> 31 32 #include "guest-agent-core.h" 33 #include "vss-win32.h" 34 #include "qga-qapi-commands.h" 35 #include "qapi/error.h" 36 #include "qapi/qmp/qerror.h" 37 #include "qemu/queue.h" 38 #include "qemu/host-utils.h" 39 #include "qemu/base64.h" 40 #include "commands-common.h" 41 42 /* 43 * The following should be in devpkey.h, but it isn't. The key names were 44 * prefixed to avoid (future) name clashes. Once the definitions get into 45 * mingw the following lines can be removed. 46 */ 47 DEFINE_DEVPROPKEY(qga_DEVPKEY_NAME, 0xb725f130, 0x47ef, 0x101a, 0xa5, 48 0xf1, 0x02, 0x60, 0x8c, 0x9e, 0xeb, 0xac, 10); 49 /* DEVPROP_TYPE_STRING */ 50 DEFINE_DEVPROPKEY(qga_DEVPKEY_Device_HardwareIds, 0xa45c254e, 0xdf1c, 51 0x4efd, 0x80, 0x20, 0x67, 0xd1, 0x46, 0xa8, 0x50, 0xe0, 3); 52 /* DEVPROP_TYPE_STRING_LIST */ 53 DEFINE_DEVPROPKEY(qga_DEVPKEY_Device_DriverDate, 0xa8b865dd, 0x2e3d, 54 0x4094, 0xad, 0x97, 0xe5, 0x93, 0xa7, 0xc, 0x75, 0xd6, 2); 55 /* DEVPROP_TYPE_FILETIME */ 56 DEFINE_DEVPROPKEY(qga_DEVPKEY_Device_DriverVersion, 0xa8b865dd, 0x2e3d, 57 0x4094, 0xad, 0x97, 0xe5, 0x93, 0xa7, 0xc, 0x75, 0xd6, 3); 58 /* DEVPROP_TYPE_STRING */ 59 /* The CM_Get_DevNode_PropertyW prototype is only sometimes in cfgmgr32.h */ 60 #ifndef CM_Get_DevNode_Property 61 #pragma GCC diagnostic push 62 #pragma GCC diagnostic ignored "-Wredundant-decls" 63 CMAPI CONFIGRET WINAPI CM_Get_DevNode_PropertyW( 64 DEVINST dnDevInst, 65 CONST DEVPROPKEY * PropertyKey, 66 DEVPROPTYPE * PropertyType, 67 PBYTE PropertyBuffer, 68 PULONG PropertyBufferSize, 69 ULONG ulFlags 70 ); 71 #define CM_Get_DevNode_Property CM_Get_DevNode_PropertyW 72 #pragma GCC diagnostic pop 73 #endif 74 75 #ifndef SHTDN_REASON_FLAG_PLANNED 76 #define SHTDN_REASON_FLAG_PLANNED 0x80000000 77 #endif 78 79 /* multiple of 100 nanoseconds elapsed between windows baseline 80 * (1/1/1601) and Unix Epoch (1/1/1970), accounting for leap years */ 81 #define W32_FT_OFFSET (10000000ULL * 60 * 60 * 24 * \ 82 (365 * (1970 - 1601) + \ 83 (1970 - 1601) / 4 - 3)) 84 85 #define INVALID_SET_FILE_POINTER ((DWORD)-1) 86 87 struct GuestFileHandle { 88 int64_t id; 89 HANDLE fh; 90 QTAILQ_ENTRY(GuestFileHandle) next; 91 }; 92 93 static struct { 94 QTAILQ_HEAD(, GuestFileHandle) filehandles; 95 } guest_file_state = { 96 .filehandles = QTAILQ_HEAD_INITIALIZER(guest_file_state.filehandles), 97 }; 98 99 #define FILE_GENERIC_APPEND (FILE_GENERIC_WRITE & ~FILE_WRITE_DATA) 100 101 typedef struct OpenFlags { 102 const char *forms; 103 DWORD desired_access; 104 DWORD creation_disposition; 105 } OpenFlags; 106 static OpenFlags guest_file_open_modes[] = { 107 {"r", GENERIC_READ, OPEN_EXISTING}, 108 {"rb", GENERIC_READ, OPEN_EXISTING}, 109 {"w", GENERIC_WRITE, CREATE_ALWAYS}, 110 {"wb", GENERIC_WRITE, CREATE_ALWAYS}, 111 {"a", FILE_GENERIC_APPEND, OPEN_ALWAYS }, 112 {"r+", GENERIC_WRITE | GENERIC_READ, OPEN_EXISTING}, 113 {"rb+", GENERIC_WRITE | GENERIC_READ, OPEN_EXISTING}, 114 {"r+b", GENERIC_WRITE | GENERIC_READ, OPEN_EXISTING}, 115 {"w+", GENERIC_WRITE | GENERIC_READ, CREATE_ALWAYS}, 116 {"wb+", GENERIC_WRITE | GENERIC_READ, CREATE_ALWAYS}, 117 {"w+b", GENERIC_WRITE | GENERIC_READ, CREATE_ALWAYS}, 118 {"a+", FILE_GENERIC_APPEND | GENERIC_READ, OPEN_ALWAYS }, 119 {"ab+", FILE_GENERIC_APPEND | GENERIC_READ, OPEN_ALWAYS }, 120 {"a+b", FILE_GENERIC_APPEND | GENERIC_READ, OPEN_ALWAYS } 121 }; 122 123 /* 124 * We use an exponentially weighted moving average, just like Unix systems do 125 * https://en.wikipedia.org/wiki/Load_(computing)#Unix-style_load_calculation 126 * 127 * These constants serve as the damping factor and are calculated with 128 * 1 / exp(sampling interval in seconds / window size in seconds) 129 * 130 * This formula comes from linux's include/linux/sched/loadavg.h 131 * https://github.com/torvalds/linux/blob/345671ea0f9258f410eb057b9ced9cefbbe5dc78/include/linux/sched/loadavg.h#L20-L23 132 */ 133 #define LOADAVG_FACTOR_1F 0.9200444146293232478931553241 134 #define LOADAVG_FACTOR_5F 0.9834714538216174894737477501 135 #define LOADAVG_FACTOR_15F 0.9944598480048967508795473394 136 /* 137 * The time interval in seconds between taking load counts, same as Linux 138 */ 139 #define LOADAVG_SAMPLING_INTERVAL 5 140 141 double load_avg_1m; 142 double load_avg_5m; 143 double load_avg_15m; 144 145 #define debug_error(msg) do { \ 146 char *suffix = g_win32_error_message(GetLastError()); \ 147 g_debug("%s: %s", (msg), suffix); \ 148 g_free(suffix); \ 149 } while (0) 150 151 static OpenFlags *find_open_flag(const char *mode_str) 152 { 153 int mode; 154 Error **errp = NULL; 155 156 for (mode = 0; mode < ARRAY_SIZE(guest_file_open_modes); ++mode) { 157 OpenFlags *flags = guest_file_open_modes + mode; 158 159 if (strcmp(flags->forms, mode_str) == 0) { 160 return flags; 161 } 162 } 163 164 error_setg(errp, "invalid file open mode '%s'", mode_str); 165 return NULL; 166 } 167 168 static int64_t guest_file_handle_add(HANDLE fh, Error **errp) 169 { 170 GuestFileHandle *gfh; 171 int64_t handle; 172 173 handle = ga_get_fd_handle(ga_state, errp); 174 if (handle < 0) { 175 return -1; 176 } 177 gfh = g_new0(GuestFileHandle, 1); 178 gfh->id = handle; 179 gfh->fh = fh; 180 QTAILQ_INSERT_TAIL(&guest_file_state.filehandles, gfh, next); 181 182 return handle; 183 } 184 185 GuestFileHandle *guest_file_handle_find(int64_t id, Error **errp) 186 { 187 GuestFileHandle *gfh; 188 QTAILQ_FOREACH(gfh, &guest_file_state.filehandles, next) { 189 if (gfh->id == id) { 190 return gfh; 191 } 192 } 193 error_setg(errp, "handle '%" PRId64 "' has not been found", id); 194 return NULL; 195 } 196 197 static void handle_set_nonblocking(HANDLE fh) 198 { 199 DWORD file_type, pipe_state; 200 file_type = GetFileType(fh); 201 if (file_type != FILE_TYPE_PIPE) { 202 return; 203 } 204 /* If file_type == FILE_TYPE_PIPE, according to MSDN 205 * the specified file is socket or named pipe */ 206 if (!GetNamedPipeHandleState(fh, &pipe_state, NULL, 207 NULL, NULL, NULL, 0)) { 208 return; 209 } 210 /* The fd is named pipe fd */ 211 if (pipe_state & PIPE_NOWAIT) { 212 return; 213 } 214 215 pipe_state |= PIPE_NOWAIT; 216 SetNamedPipeHandleState(fh, &pipe_state, NULL, NULL); 217 } 218 219 int64_t qmp_guest_file_open(const char *path, const char *mode, Error **errp) 220 { 221 int64_t fd = -1; 222 HANDLE fh; 223 HANDLE templ_file = NULL; 224 DWORD share_mode = FILE_SHARE_READ; 225 DWORD flags_and_attr = FILE_ATTRIBUTE_NORMAL; 226 LPSECURITY_ATTRIBUTES sa_attr = NULL; 227 OpenFlags *guest_flags; 228 GError *gerr = NULL; 229 wchar_t *w_path = NULL; 230 231 if (!mode) { 232 mode = "r"; 233 } 234 slog("guest-file-open called, filepath: %s, mode: %s", path, mode); 235 guest_flags = find_open_flag(mode); 236 if (guest_flags == NULL) { 237 error_setg(errp, "invalid file open mode"); 238 goto done; 239 } 240 241 w_path = g_utf8_to_utf16(path, -1, NULL, NULL, &gerr); 242 if (!w_path) { 243 error_setg(errp, "can't convert 'path' to UTF-16: %s", 244 gerr->message); 245 g_error_free(gerr); 246 goto done; 247 } 248 249 fh = CreateFileW(w_path, guest_flags->desired_access, share_mode, sa_attr, 250 guest_flags->creation_disposition, flags_and_attr, 251 templ_file); 252 if (fh == INVALID_HANDLE_VALUE) { 253 error_setg_win32(errp, GetLastError(), "failed to open file '%s'", 254 path); 255 goto done; 256 } 257 258 /* set fd non-blocking to avoid common use cases (like reading from a 259 * named pipe) from hanging the agent 260 */ 261 handle_set_nonblocking(fh); 262 263 fd = guest_file_handle_add(fh, errp); 264 if (fd < 0) { 265 CloseHandle(fh); 266 error_setg(errp, "failed to add handle to qmp handle table"); 267 goto done; 268 } 269 270 slog("guest-file-open, handle: % " PRId64, fd); 271 272 done: 273 g_free(w_path); 274 return fd; 275 } 276 277 void qmp_guest_file_close(int64_t handle, Error **errp) 278 { 279 bool ret; 280 GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 281 slog("guest-file-close called, handle: %" PRId64, handle); 282 if (gfh == NULL) { 283 return; 284 } 285 ret = CloseHandle(gfh->fh); 286 if (!ret) { 287 error_setg_win32(errp, GetLastError(), "failed close handle"); 288 return; 289 } 290 291 QTAILQ_REMOVE(&guest_file_state.filehandles, gfh, next); 292 g_free(gfh); 293 } 294 295 static void acquire_privilege(const char *name, Error **errp) 296 { 297 HANDLE token = NULL; 298 TOKEN_PRIVILEGES priv; 299 300 if (OpenProcessToken(GetCurrentProcess(), 301 TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &token)) 302 { 303 if (!LookupPrivilegeValue(NULL, name, &priv.Privileges[0].Luid)) { 304 error_setg(errp, "no luid for requested privilege"); 305 goto out; 306 } 307 308 priv.PrivilegeCount = 1; 309 priv.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED; 310 311 if (!AdjustTokenPrivileges(token, FALSE, &priv, 0, NULL, 0)) { 312 error_setg(errp, "unable to acquire requested privilege"); 313 goto out; 314 } 315 316 } else { 317 error_setg(errp, "failed to open privilege token"); 318 } 319 320 out: 321 if (token) { 322 CloseHandle(token); 323 } 324 } 325 326 static void execute_async(DWORD WINAPI (*func)(LPVOID), LPVOID opaque, 327 Error **errp) 328 { 329 HANDLE thread = CreateThread(NULL, 0, func, opaque, 0, NULL); 330 if (!thread) { 331 error_setg(errp, "failed to dispatch asynchronous command"); 332 } 333 } 334 335 void qmp_guest_shutdown(const char *mode, Error **errp) 336 { 337 Error *local_err = NULL; 338 UINT shutdown_flag = EWX_FORCE; 339 340 slog("guest-shutdown called, mode: %s", mode); 341 342 if (!mode || strcmp(mode, "powerdown") == 0) { 343 shutdown_flag |= EWX_POWEROFF; 344 } else if (strcmp(mode, "halt") == 0) { 345 shutdown_flag |= EWX_SHUTDOWN; 346 } else if (strcmp(mode, "reboot") == 0) { 347 shutdown_flag |= EWX_REBOOT; 348 } else { 349 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "mode", 350 "'halt', 'powerdown', or 'reboot'"); 351 return; 352 } 353 354 /* Request a shutdown privilege, but try to shut down the system 355 anyway. */ 356 acquire_privilege(SE_SHUTDOWN_NAME, &local_err); 357 if (local_err) { 358 error_propagate(errp, local_err); 359 return; 360 } 361 362 if (!ExitWindowsEx(shutdown_flag, SHTDN_REASON_FLAG_PLANNED)) { 363 g_autofree gchar *emsg = g_win32_error_message(GetLastError()); 364 slog("guest-shutdown failed: %s", emsg); 365 error_setg_win32(errp, GetLastError(), "guest-shutdown failed"); 366 } 367 } 368 369 GuestFileRead *guest_file_read_unsafe(GuestFileHandle *gfh, 370 int64_t count, Error **errp) 371 { 372 GuestFileRead *read_data = NULL; 373 guchar *buf; 374 HANDLE fh = gfh->fh; 375 bool is_ok; 376 DWORD read_count; 377 378 buf = g_malloc0(count + 1); 379 is_ok = ReadFile(fh, buf, count, &read_count, NULL); 380 if (!is_ok) { 381 error_setg_win32(errp, GetLastError(), "failed to read file"); 382 } else { 383 buf[read_count] = 0; 384 read_data = g_new0(GuestFileRead, 1); 385 read_data->count = (size_t)read_count; 386 read_data->eof = read_count == 0; 387 388 if (read_count != 0) { 389 read_data->buf_b64 = g_base64_encode(buf, read_count); 390 } 391 } 392 g_free(buf); 393 394 return read_data; 395 } 396 397 GuestFileWrite *qmp_guest_file_write(int64_t handle, const char *buf_b64, 398 bool has_count, int64_t count, 399 Error **errp) 400 { 401 GuestFileWrite *write_data = NULL; 402 guchar *buf; 403 gsize buf_len; 404 bool is_ok; 405 DWORD write_count; 406 GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 407 HANDLE fh; 408 409 if (!gfh) { 410 return NULL; 411 } 412 fh = gfh->fh; 413 buf = qbase64_decode(buf_b64, -1, &buf_len, errp); 414 if (!buf) { 415 return NULL; 416 } 417 418 if (!has_count) { 419 count = buf_len; 420 } else if (count < 0 || count > buf_len) { 421 error_setg(errp, "value '%" PRId64 422 "' is invalid for argument count", count); 423 goto done; 424 } 425 426 is_ok = WriteFile(fh, buf, count, &write_count, NULL); 427 if (!is_ok) { 428 error_setg_win32(errp, GetLastError(), "failed to write to file"); 429 slog("guest-file-write-failed, handle: %" PRId64, handle); 430 } else { 431 write_data = g_new0(GuestFileWrite, 1); 432 write_data->count = (size_t) write_count; 433 } 434 435 done: 436 g_free(buf); 437 return write_data; 438 } 439 440 GuestFileSeek *qmp_guest_file_seek(int64_t handle, int64_t offset, 441 GuestFileWhence *whence_code, 442 Error **errp) 443 { 444 GuestFileHandle *gfh; 445 GuestFileSeek *seek_data; 446 HANDLE fh; 447 LARGE_INTEGER new_pos, off_pos; 448 off_pos.QuadPart = offset; 449 BOOL res; 450 int whence; 451 Error *err = NULL; 452 453 gfh = guest_file_handle_find(handle, errp); 454 if (!gfh) { 455 return NULL; 456 } 457 458 /* We stupidly exposed 'whence':'int' in our qapi */ 459 whence = ga_parse_whence(whence_code, &err); 460 if (err) { 461 error_propagate(errp, err); 462 return NULL; 463 } 464 465 fh = gfh->fh; 466 res = SetFilePointerEx(fh, off_pos, &new_pos, whence); 467 if (!res) { 468 error_setg_win32(errp, GetLastError(), "failed to seek file"); 469 return NULL; 470 } 471 seek_data = g_new0(GuestFileSeek, 1); 472 seek_data->position = new_pos.QuadPart; 473 return seek_data; 474 } 475 476 void qmp_guest_file_flush(int64_t handle, Error **errp) 477 { 478 HANDLE fh; 479 GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 480 if (!gfh) { 481 return; 482 } 483 484 fh = gfh->fh; 485 if (!FlushFileBuffers(fh)) { 486 error_setg_win32(errp, GetLastError(), "failed to flush file"); 487 } 488 } 489 490 static GuestDiskBusType win2qemu[] = { 491 [BusTypeUnknown] = GUEST_DISK_BUS_TYPE_UNKNOWN, 492 [BusTypeScsi] = GUEST_DISK_BUS_TYPE_SCSI, 493 [BusTypeAtapi] = GUEST_DISK_BUS_TYPE_IDE, 494 [BusTypeAta] = GUEST_DISK_BUS_TYPE_IDE, 495 [BusType1394] = GUEST_DISK_BUS_TYPE_IEEE1394, 496 [BusTypeSsa] = GUEST_DISK_BUS_TYPE_SSA, 497 [BusTypeFibre] = GUEST_DISK_BUS_TYPE_SSA, 498 [BusTypeUsb] = GUEST_DISK_BUS_TYPE_USB, 499 [BusTypeRAID] = GUEST_DISK_BUS_TYPE_RAID, 500 [BusTypeiScsi] = GUEST_DISK_BUS_TYPE_ISCSI, 501 [BusTypeSas] = GUEST_DISK_BUS_TYPE_SAS, 502 [BusTypeSata] = GUEST_DISK_BUS_TYPE_SATA, 503 [BusTypeSd] = GUEST_DISK_BUS_TYPE_SD, 504 [BusTypeMmc] = GUEST_DISK_BUS_TYPE_MMC, 505 [BusTypeVirtual] = GUEST_DISK_BUS_TYPE_VIRTUAL, 506 [BusTypeFileBackedVirtual] = GUEST_DISK_BUS_TYPE_FILE_BACKED_VIRTUAL, 507 /* 508 * BusTypeSpaces currently is not supported 509 */ 510 [BusTypeSpaces] = GUEST_DISK_BUS_TYPE_UNKNOWN, 511 [BusTypeNvme] = GUEST_DISK_BUS_TYPE_NVME, 512 }; 513 514 static GuestDiskBusType find_bus_type(STORAGE_BUS_TYPE bus) 515 { 516 if (bus >= ARRAY_SIZE(win2qemu) || (int)bus < 0) { 517 return GUEST_DISK_BUS_TYPE_UNKNOWN; 518 } 519 return win2qemu[(int)bus]; 520 } 521 522 static void get_pci_address_for_device(GuestPCIAddress *pci, 523 HDEVINFO dev_info) 524 { 525 SP_DEVINFO_DATA dev_info_data; 526 DWORD j; 527 DWORD size; 528 bool partial_pci = false; 529 530 dev_info_data.cbSize = sizeof(SP_DEVINFO_DATA); 531 532 for (j = 0; 533 SetupDiEnumDeviceInfo(dev_info, j, &dev_info_data); 534 j++) { 535 DWORD addr, bus, ui_slot, type; 536 int func, slot; 537 size = sizeof(DWORD); 538 539 /* 540 * There is no need to allocate buffer in the next functions. The 541 * size is known and ULONG according to 542 * https://msdn.microsoft.com/en-us/library/windows/hardware/ff543095(v=vs.85).aspx 543 */ 544 if (!SetupDiGetDeviceRegistryProperty( 545 dev_info, &dev_info_data, SPDRP_BUSNUMBER, 546 &type, (PBYTE)&bus, size, NULL)) { 547 debug_error("failed to get PCI bus"); 548 bus = -1; 549 partial_pci = true; 550 } 551 552 /* 553 * The function retrieves the device's address. This value will be 554 * transformed into device function and number 555 */ 556 if (!SetupDiGetDeviceRegistryProperty( 557 dev_info, &dev_info_data, SPDRP_ADDRESS, 558 &type, (PBYTE)&addr, size, NULL)) { 559 debug_error("failed to get PCI address"); 560 addr = -1; 561 partial_pci = true; 562 } 563 564 /* 565 * This call returns UINumber of DEVICE_CAPABILITIES structure. 566 * This number is typically a user-perceived slot number. 567 */ 568 if (!SetupDiGetDeviceRegistryProperty( 569 dev_info, &dev_info_data, SPDRP_UI_NUMBER, 570 &type, (PBYTE)&ui_slot, size, NULL)) { 571 debug_error("failed to get PCI slot"); 572 ui_slot = -1; 573 partial_pci = true; 574 } 575 576 /* 577 * SetupApi gives us the same information as driver with 578 * IoGetDeviceProperty. According to Microsoft: 579 * 580 * FunctionNumber = (USHORT)((propertyAddress) & 0x0000FFFF) 581 * DeviceNumber = (USHORT)(((propertyAddress) >> 16) & 0x0000FFFF) 582 * SPDRP_ADDRESS is propertyAddress, so we do the same. 583 * 584 * https://docs.microsoft.com/en-us/windows/desktop/api/setupapi/nf-setupapi-setupdigetdeviceregistrypropertya 585 */ 586 if (partial_pci) { 587 pci->domain = -1; 588 pci->slot = -1; 589 pci->function = -1; 590 pci->bus = -1; 591 continue; 592 } else { 593 func = ((int)addr == -1) ? -1 : addr & 0x0000FFFF; 594 slot = ((int)addr == -1) ? -1 : (addr >> 16) & 0x0000FFFF; 595 if ((int)ui_slot != slot) { 596 g_debug("mismatch with reported slot values: %d vs %d", 597 (int)ui_slot, slot); 598 } 599 pci->domain = 0; 600 pci->slot = (int)ui_slot; 601 pci->function = func; 602 pci->bus = (int)bus; 603 return; 604 } 605 } 606 } 607 608 static GuestPCIAddress *get_empty_pci_address(void) 609 { 610 GuestPCIAddress *pci = NULL; 611 612 pci = g_malloc0(sizeof(*pci)); 613 pci->domain = -1; 614 pci->slot = -1; 615 pci->function = -1; 616 pci->bus = -1; 617 return pci; 618 } 619 620 static GuestPCIAddress *get_pci_info(int number, Error **errp) 621 { 622 HDEVINFO dev_info = INVALID_HANDLE_VALUE; 623 HDEVINFO parent_dev_info = INVALID_HANDLE_VALUE; 624 625 SP_DEVINFO_DATA dev_info_data; 626 SP_DEVICE_INTERFACE_DATA dev_iface_data; 627 HANDLE dev_file; 628 int i; 629 GuestPCIAddress *pci = get_empty_pci_address(); 630 631 dev_info = SetupDiGetClassDevs(&GUID_DEVINTERFACE_DISK, 0, 0, 632 DIGCF_PRESENT | DIGCF_DEVICEINTERFACE); 633 if (dev_info == INVALID_HANDLE_VALUE) { 634 error_setg_win32(errp, GetLastError(), "failed to get devices tree"); 635 goto end; 636 } 637 638 g_debug("enumerating devices"); 639 dev_info_data.cbSize = sizeof(SP_DEVINFO_DATA); 640 dev_iface_data.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA); 641 for (i = 0; SetupDiEnumDeviceInfo(dev_info, i, &dev_info_data); i++) { 642 g_autofree PSP_DEVICE_INTERFACE_DETAIL_DATA pdev_iface_detail_data = NULL; 643 STORAGE_DEVICE_NUMBER sdn; 644 g_autofree char *parent_dev_id = NULL; 645 SP_DEVINFO_DATA parent_dev_info_data; 646 DWORD size = 0; 647 648 g_debug("getting device path"); 649 if (SetupDiEnumDeviceInterfaces(dev_info, &dev_info_data, 650 &GUID_DEVINTERFACE_DISK, 0, 651 &dev_iface_data)) { 652 if (!SetupDiGetDeviceInterfaceDetail(dev_info, &dev_iface_data, 653 pdev_iface_detail_data, 654 size, &size, 655 &dev_info_data)) { 656 if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) { 657 pdev_iface_detail_data = g_malloc(size); 658 pdev_iface_detail_data->cbSize = 659 sizeof(*pdev_iface_detail_data); 660 } else { 661 error_setg_win32(errp, GetLastError(), 662 "failed to get device interfaces"); 663 goto end; 664 } 665 } 666 667 if (!SetupDiGetDeviceInterfaceDetail(dev_info, &dev_iface_data, 668 pdev_iface_detail_data, 669 size, &size, 670 &dev_info_data)) { 671 // pdev_iface_detail_data already is allocated 672 error_setg_win32(errp, GetLastError(), 673 "failed to get device interfaces"); 674 goto end; 675 } 676 677 dev_file = CreateFile(pdev_iface_detail_data->DevicePath, 0, 678 FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 679 NULL); 680 681 if (!DeviceIoControl(dev_file, IOCTL_STORAGE_GET_DEVICE_NUMBER, 682 NULL, 0, &sdn, sizeof(sdn), &size, NULL)) { 683 CloseHandle(dev_file); 684 error_setg_win32(errp, GetLastError(), 685 "failed to get device slot number"); 686 goto end; 687 } 688 689 CloseHandle(dev_file); 690 if (sdn.DeviceNumber != number) { 691 continue; 692 } 693 } else { 694 error_setg_win32(errp, GetLastError(), 695 "failed to get device interfaces"); 696 goto end; 697 } 698 699 g_debug("found device slot %d. Getting storage controller", number); 700 { 701 CONFIGRET cr; 702 DEVINST dev_inst, parent_dev_inst; 703 ULONG dev_id_size = 0; 704 705 size = 0; 706 if (!SetupDiGetDeviceInstanceId(dev_info, &dev_info_data, 707 parent_dev_id, size, &size)) { 708 if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) { 709 parent_dev_id = g_malloc(size); 710 } else { 711 error_setg_win32(errp, GetLastError(), 712 "failed to get device instance ID"); 713 goto end; 714 } 715 } 716 717 if (!SetupDiGetDeviceInstanceId(dev_info, &dev_info_data, 718 parent_dev_id, size, &size)) { 719 // parent_dev_id already is allocated 720 error_setg_win32(errp, GetLastError(), 721 "failed to get device instance ID"); 722 goto end; 723 } 724 725 /* 726 * CM API used here as opposed to 727 * SetupDiGetDeviceProperty(..., DEVPKEY_Device_Parent, ...) 728 * which exports are only available in mingw-w64 6+ 729 */ 730 cr = CM_Locate_DevInst(&dev_inst, parent_dev_id, 0); 731 if (cr != CR_SUCCESS) { 732 g_error("CM_Locate_DevInst failed with code %lx", cr); 733 error_setg_win32(errp, GetLastError(), 734 "failed to get device instance"); 735 goto end; 736 } 737 cr = CM_Get_Parent(&parent_dev_inst, dev_inst, 0); 738 if (cr != CR_SUCCESS) { 739 g_error("CM_Get_Parent failed with code %lx", cr); 740 error_setg_win32(errp, GetLastError(), 741 "failed to get parent device instance"); 742 goto end; 743 } 744 745 cr = CM_Get_Device_ID_Size(&dev_id_size, parent_dev_inst, 0); 746 if (cr != CR_SUCCESS) { 747 g_error("CM_Get_Device_ID_Size failed with code %lx", cr); 748 error_setg_win32(errp, GetLastError(), 749 "failed to get parent device ID length"); 750 goto end; 751 } 752 753 ++dev_id_size; 754 if (dev_id_size > size) { 755 g_free(parent_dev_id); 756 parent_dev_id = g_malloc(dev_id_size); 757 } 758 759 cr = CM_Get_Device_ID(parent_dev_inst, parent_dev_id, dev_id_size, 760 0); 761 if (cr != CR_SUCCESS) { 762 g_error("CM_Get_Device_ID failed with code %lx", cr); 763 error_setg_win32(errp, GetLastError(), 764 "failed to get parent device ID"); 765 goto end; 766 } 767 } 768 769 g_debug("querying storage controller %s for PCI information", 770 parent_dev_id); 771 parent_dev_info = 772 SetupDiGetClassDevs(&GUID_DEVINTERFACE_STORAGEPORT, parent_dev_id, 773 NULL, DIGCF_PRESENT | DIGCF_DEVICEINTERFACE); 774 775 if (parent_dev_info == INVALID_HANDLE_VALUE) { 776 error_setg_win32(errp, GetLastError(), 777 "failed to get parent device"); 778 goto end; 779 } 780 781 parent_dev_info_data.cbSize = sizeof(SP_DEVINFO_DATA); 782 if (!SetupDiEnumDeviceInfo(parent_dev_info, 0, &parent_dev_info_data)) { 783 error_setg_win32(errp, GetLastError(), 784 "failed to get parent device data"); 785 goto end; 786 } 787 788 get_pci_address_for_device(pci, parent_dev_info); 789 790 break; 791 } 792 793 end: 794 if (parent_dev_info != INVALID_HANDLE_VALUE) { 795 SetupDiDestroyDeviceInfoList(parent_dev_info); 796 } 797 if (dev_info != INVALID_HANDLE_VALUE) { 798 SetupDiDestroyDeviceInfoList(dev_info); 799 } 800 return pci; 801 } 802 803 static void get_disk_properties(HANDLE vol_h, GuestDiskAddress *disk, 804 Error **errp) 805 { 806 STORAGE_PROPERTY_QUERY query; 807 STORAGE_DEVICE_DESCRIPTOR *dev_desc, buf; 808 DWORD received; 809 ULONG size = sizeof(buf); 810 811 dev_desc = &buf; 812 query.PropertyId = StorageDeviceProperty; 813 query.QueryType = PropertyStandardQuery; 814 815 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 bus type"); 819 return; 820 } 821 disk->bus_type = find_bus_type(dev_desc->BusType); 822 g_debug("bus type %d", disk->bus_type); 823 824 /* Query once more. Now with long enough buffer. */ 825 size = dev_desc->Size; 826 dev_desc = g_malloc0(size); 827 if (!DeviceIoControl(vol_h, IOCTL_STORAGE_QUERY_PROPERTY, &query, 828 sizeof(STORAGE_PROPERTY_QUERY), dev_desc, 829 size, &received, NULL)) { 830 error_setg_win32(errp, GetLastError(), "failed to get serial number"); 831 g_debug("failed to get serial number"); 832 goto out_free; 833 } 834 if (dev_desc->SerialNumberOffset > 0) { 835 const char *serial; 836 size_t len; 837 838 if (dev_desc->SerialNumberOffset >= received) { 839 error_setg(errp, "failed to get serial number: offset outside the buffer"); 840 g_debug("serial number offset outside the buffer"); 841 goto out_free; 842 } 843 serial = (char *)dev_desc + dev_desc->SerialNumberOffset; 844 len = received - dev_desc->SerialNumberOffset; 845 g_debug("serial number \"%s\"", serial); 846 if (*serial != 0) { 847 disk->serial = g_strndup(serial, len); 848 } 849 } 850 out_free: 851 g_free(dev_desc); 852 } 853 854 static void get_single_disk_info(int disk_number, 855 GuestDiskAddress *disk, Error **errp) 856 { 857 SCSI_ADDRESS addr, *scsi_ad; 858 DWORD len; 859 HANDLE disk_h; 860 Error *local_err = NULL; 861 862 scsi_ad = &addr; 863 864 g_debug("getting disk info for: %s", disk->dev); 865 disk_h = CreateFile(disk->dev, 0, FILE_SHARE_READ, NULL, OPEN_EXISTING, 866 0, NULL); 867 if (disk_h == INVALID_HANDLE_VALUE) { 868 error_setg_win32(errp, GetLastError(), "failed to open disk"); 869 return; 870 } 871 872 get_disk_properties(disk_h, disk, &local_err); 873 if (local_err) { 874 error_propagate(errp, local_err); 875 goto err_close; 876 } 877 878 g_debug("bus type %d", disk->bus_type); 879 /* always set pci_controller as required by schema. get_pci_info() should 880 * report -1 values for non-PCI buses rather than fail. fail the command 881 * if that doesn't hold since that suggests some other unexpected 882 * breakage 883 */ 884 if (disk->bus_type == GUEST_DISK_BUS_TYPE_USB) { 885 disk->pci_controller = get_empty_pci_address(); 886 } else { 887 disk->pci_controller = get_pci_info(disk_number, &local_err); 888 if (local_err) { 889 error_propagate(errp, local_err); 890 goto err_close; 891 } 892 } 893 if (disk->bus_type == GUEST_DISK_BUS_TYPE_SCSI 894 || disk->bus_type == GUEST_DISK_BUS_TYPE_IDE 895 || disk->bus_type == GUEST_DISK_BUS_TYPE_RAID 896 /* This bus type is not supported before Windows Server 2003 SP1 */ 897 || disk->bus_type == GUEST_DISK_BUS_TYPE_SAS 898 ) { 899 /* We are able to use the same ioctls for different bus types 900 * according to Microsoft docs 901 * https://technet.microsoft.com/en-us/library/ee851589(v=ws.10).aspx */ 902 g_debug("getting SCSI info"); 903 if (DeviceIoControl(disk_h, IOCTL_SCSI_GET_ADDRESS, NULL, 0, scsi_ad, 904 sizeof(SCSI_ADDRESS), &len, NULL)) { 905 disk->unit = addr.Lun; 906 disk->target = addr.TargetId; 907 disk->bus = addr.PathId; 908 } 909 /* We do not set error in this case, because we still have enough 910 * information about volume. */ 911 } 912 913 err_close: 914 CloseHandle(disk_h); 915 } 916 917 /* VSS provider works with volumes, thus there is no difference if 918 * the volume consist of spanned disks. Info about the first disk in the 919 * volume is returned for the spanned disk group (LVM) */ 920 static GuestDiskAddressList *build_guest_disk_info(char *guid, Error **errp) 921 { 922 Error *local_err = NULL; 923 GuestDiskAddressList *list = NULL; 924 GuestDiskAddress *disk = NULL; 925 int i; 926 HANDLE vol_h; 927 DWORD size; 928 PVOLUME_DISK_EXTENTS extents = NULL; 929 930 /* strip final backslash */ 931 char *name = g_strdup(guid); 932 if (g_str_has_suffix(name, "\\")) { 933 name[strlen(name) - 1] = 0; 934 } 935 936 g_debug("opening %s", name); 937 vol_h = CreateFile(name, 0, FILE_SHARE_READ, NULL, OPEN_EXISTING, 938 0, NULL); 939 if (vol_h == INVALID_HANDLE_VALUE) { 940 error_setg_win32(errp, GetLastError(), "failed to open volume"); 941 goto out; 942 } 943 944 /* Get list of extents */ 945 g_debug("getting disk extents"); 946 size = sizeof(VOLUME_DISK_EXTENTS); 947 extents = g_malloc0(size); 948 if (!DeviceIoControl(vol_h, IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS, NULL, 949 0, extents, size, &size, NULL)) { 950 DWORD last_err = GetLastError(); 951 if (last_err == ERROR_MORE_DATA) { 952 /* Try once more with big enough buffer */ 953 size = sizeof(VOLUME_DISK_EXTENTS) + 954 (sizeof(DISK_EXTENT) * (extents->NumberOfDiskExtents - 1)); 955 g_free(extents); 956 extents = g_malloc0(size); 957 if (!DeviceIoControl( 958 vol_h, IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS, NULL, 959 0, extents, size, NULL, NULL)) { 960 error_setg_win32(errp, GetLastError(), 961 "failed to get disk extents"); 962 goto out; 963 } 964 } else if (last_err == ERROR_INVALID_FUNCTION) { 965 /* Possibly CD-ROM or a shared drive. Try to pass the volume */ 966 g_debug("volume not on disk"); 967 disk = g_new0(GuestDiskAddress, 1); 968 disk->dev = g_strdup(name); 969 get_single_disk_info(0xffffffff, disk, &local_err); 970 if (local_err) { 971 g_debug("failed to get disk info, ignoring error: %s", 972 error_get_pretty(local_err)); 973 error_free(local_err); 974 goto out; 975 } 976 QAPI_LIST_PREPEND(list, disk); 977 disk = NULL; 978 goto out; 979 } else { 980 error_setg_win32(errp, GetLastError(), 981 "failed to get disk extents"); 982 goto out; 983 } 984 } 985 g_debug("Number of extents: %lu", extents->NumberOfDiskExtents); 986 987 /* Go through each extent */ 988 for (i = 0; i < extents->NumberOfDiskExtents; i++) { 989 disk = g_new0(GuestDiskAddress, 1); 990 991 /* Disk numbers directly correspond to numbers used in UNCs 992 * 993 * See documentation for DISK_EXTENT: 994 * https://docs.microsoft.com/en-us/windows/desktop/api/winioctl/ns-winioctl-_disk_extent 995 * 996 * See also Naming Files, Paths and Namespaces: 997 * https://docs.microsoft.com/en-us/windows/desktop/FileIO/naming-a-file#win32-device-namespaces 998 */ 999 disk->dev = g_strdup_printf("\\\\.\\PhysicalDrive%lu", 1000 extents->Extents[i].DiskNumber); 1001 1002 get_single_disk_info(extents->Extents[i].DiskNumber, disk, &local_err); 1003 if (local_err) { 1004 error_propagate(errp, local_err); 1005 goto out; 1006 } 1007 QAPI_LIST_PREPEND(list, disk); 1008 disk = NULL; 1009 } 1010 1011 1012 out: 1013 if (vol_h != INVALID_HANDLE_VALUE) { 1014 CloseHandle(vol_h); 1015 } 1016 qapi_free_GuestDiskAddress(disk); 1017 g_free(extents); 1018 g_free(name); 1019 1020 return list; 1021 } 1022 1023 GuestDiskInfoList *qmp_guest_get_disks(Error **errp) 1024 { 1025 GuestDiskInfoList *ret = NULL; 1026 HDEVINFO dev_info; 1027 SP_DEVICE_INTERFACE_DATA dev_iface_data; 1028 int i; 1029 1030 dev_info = SetupDiGetClassDevs(&GUID_DEVINTERFACE_DISK, 0, 0, 1031 DIGCF_PRESENT | DIGCF_DEVICEINTERFACE); 1032 if (dev_info == INVALID_HANDLE_VALUE) { 1033 error_setg_win32(errp, GetLastError(), "failed to get device tree"); 1034 return NULL; 1035 } 1036 1037 g_debug("enumerating devices"); 1038 dev_iface_data.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA); 1039 for (i = 0; 1040 SetupDiEnumDeviceInterfaces(dev_info, NULL, &GUID_DEVINTERFACE_DISK, 1041 i, &dev_iface_data); 1042 i++) { 1043 GuestDiskAddress *address = NULL; 1044 GuestDiskInfo *disk = NULL; 1045 Error *local_err = NULL; 1046 g_autofree PSP_DEVICE_INTERFACE_DETAIL_DATA 1047 pdev_iface_detail_data = NULL; 1048 STORAGE_DEVICE_NUMBER sdn; 1049 HANDLE dev_file; 1050 DWORD size = 0; 1051 BOOL result; 1052 int attempt; 1053 1054 g_debug(" getting device path"); 1055 for (attempt = 0, result = FALSE; attempt < 2 && !result; attempt++) { 1056 result = SetupDiGetDeviceInterfaceDetail(dev_info, 1057 &dev_iface_data, pdev_iface_detail_data, size, &size, NULL); 1058 if (result) { 1059 break; 1060 } 1061 if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) { 1062 pdev_iface_detail_data = g_realloc(pdev_iface_detail_data, 1063 size); 1064 pdev_iface_detail_data->cbSize = 1065 sizeof(*pdev_iface_detail_data); 1066 } else { 1067 g_debug("failed to get device interface details"); 1068 break; 1069 } 1070 } 1071 if (!result) { 1072 g_debug("skipping device"); 1073 continue; 1074 } 1075 1076 g_debug(" device: %s", pdev_iface_detail_data->DevicePath); 1077 dev_file = CreateFile(pdev_iface_detail_data->DevicePath, 0, 1078 FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, NULL); 1079 if (!DeviceIoControl(dev_file, IOCTL_STORAGE_GET_DEVICE_NUMBER, 1080 NULL, 0, &sdn, sizeof(sdn), &size, NULL)) { 1081 CloseHandle(dev_file); 1082 debug_error("failed to get storage device number"); 1083 continue; 1084 } 1085 CloseHandle(dev_file); 1086 1087 disk = g_new0(GuestDiskInfo, 1); 1088 disk->name = g_strdup_printf("\\\\.\\PhysicalDrive%lu", 1089 sdn.DeviceNumber); 1090 1091 g_debug(" number: %lu", sdn.DeviceNumber); 1092 address = g_new0(GuestDiskAddress, 1); 1093 address->dev = g_strdup(disk->name); 1094 get_single_disk_info(sdn.DeviceNumber, address, &local_err); 1095 if (local_err) { 1096 g_debug("failed to get disk info: %s", 1097 error_get_pretty(local_err)); 1098 error_free(local_err); 1099 qapi_free_GuestDiskAddress(address); 1100 address = NULL; 1101 } else { 1102 disk->address = address; 1103 } 1104 1105 QAPI_LIST_PREPEND(ret, disk); 1106 } 1107 1108 SetupDiDestroyDeviceInfoList(dev_info); 1109 return ret; 1110 } 1111 1112 static GuestFilesystemInfo *build_guest_fsinfo(char *guid, Error **errp) 1113 { 1114 DWORD info_size; 1115 char mnt, *mnt_point; 1116 wchar_t wfs_name[32]; 1117 char fs_name[32]; 1118 wchar_t vol_info[MAX_PATH + 1]; 1119 size_t len; 1120 uint64_t i64FreeBytesToCaller, i64TotalBytes, i64FreeBytes; 1121 GuestFilesystemInfo *fs = NULL; 1122 HANDLE hLocalDiskHandle = INVALID_HANDLE_VALUE; 1123 1124 GetVolumePathNamesForVolumeName(guid, (LPCH)&mnt, 0, &info_size); 1125 if (GetLastError() != ERROR_MORE_DATA) { 1126 error_setg_win32(errp, GetLastError(), "failed to get volume name"); 1127 return NULL; 1128 } 1129 1130 mnt_point = g_malloc(info_size + 1); 1131 if (!GetVolumePathNamesForVolumeName(guid, mnt_point, info_size, 1132 &info_size)) { 1133 error_setg_win32(errp, GetLastError(), "failed to get volume name"); 1134 goto free; 1135 } 1136 1137 hLocalDiskHandle = CreateFile(guid, 0 , 0, NULL, OPEN_EXISTING, 1138 FILE_ATTRIBUTE_NORMAL | 1139 FILE_FLAG_BACKUP_SEMANTICS, NULL); 1140 if (INVALID_HANDLE_VALUE == hLocalDiskHandle) { 1141 error_setg_win32(errp, GetLastError(), "failed to get handle for volume"); 1142 goto free; 1143 } 1144 1145 len = strlen(mnt_point); 1146 mnt_point[len] = '\\'; 1147 mnt_point[len + 1] = 0; 1148 1149 if (!GetVolumeInformationByHandleW(hLocalDiskHandle, vol_info, 1150 sizeof(vol_info), NULL, NULL, NULL, 1151 (LPWSTR) & wfs_name, sizeof(wfs_name))) { 1152 if (GetLastError() != ERROR_NOT_READY) { 1153 error_setg_win32(errp, GetLastError(), "failed to get volume info"); 1154 } 1155 goto free; 1156 } 1157 1158 fs = g_malloc(sizeof(*fs)); 1159 fs->name = g_strdup(guid); 1160 fs->has_total_bytes = false; 1161 fs->has_total_bytes_privileged = false; 1162 fs->has_used_bytes = false; 1163 if (len == 0) { 1164 fs->mountpoint = g_strdup("System Reserved"); 1165 } else { 1166 fs->mountpoint = g_strndup(mnt_point, len); 1167 if (GetDiskFreeSpaceEx(fs->mountpoint, 1168 (PULARGE_INTEGER) & i64FreeBytesToCaller, 1169 (PULARGE_INTEGER) & i64TotalBytes, 1170 (PULARGE_INTEGER) & i64FreeBytes)) { 1171 fs->used_bytes = i64TotalBytes - i64FreeBytes; 1172 fs->total_bytes = i64TotalBytes; 1173 fs->has_total_bytes = true; 1174 fs->has_used_bytes = true; 1175 } 1176 } 1177 wcstombs(fs_name, wfs_name, sizeof(wfs_name)); 1178 fs->type = g_strdup(fs_name); 1179 fs->disk = build_guest_disk_info(guid, errp); 1180 free: 1181 if (hLocalDiskHandle != INVALID_HANDLE_VALUE) { 1182 CloseHandle(hLocalDiskHandle); 1183 } 1184 g_free(mnt_point); 1185 return fs; 1186 } 1187 1188 GuestFilesystemInfoList *qmp_guest_get_fsinfo(Error **errp) 1189 { 1190 HANDLE vol_h; 1191 GuestFilesystemInfoList *ret = NULL; 1192 char guid[256]; 1193 1194 vol_h = FindFirstVolume(guid, sizeof(guid)); 1195 if (vol_h == INVALID_HANDLE_VALUE) { 1196 error_setg_win32(errp, GetLastError(), "failed to find any volume"); 1197 return NULL; 1198 } 1199 1200 do { 1201 Error *local_err = NULL; 1202 GuestFilesystemInfo *info = build_guest_fsinfo(guid, &local_err); 1203 if (local_err) { 1204 g_debug("failed to get filesystem info, ignoring error: %s", 1205 error_get_pretty(local_err)); 1206 error_free(local_err); 1207 continue; 1208 } 1209 QAPI_LIST_PREPEND(ret, info); 1210 } while (FindNextVolume(vol_h, guid, sizeof(guid))); 1211 1212 if (GetLastError() != ERROR_NO_MORE_FILES) { 1213 error_setg_win32(errp, GetLastError(), "failed to find next volume"); 1214 } 1215 1216 FindVolumeClose(vol_h); 1217 return ret; 1218 } 1219 1220 /* 1221 * Return status of freeze/thaw 1222 */ 1223 GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **errp) 1224 { 1225 if (!vss_initialized()) { 1226 error_setg(errp, "fsfreeze not possible as VSS failed to initialize"); 1227 return 0; 1228 } 1229 1230 if (ga_is_frozen(ga_state)) { 1231 return GUEST_FSFREEZE_STATUS_FROZEN; 1232 } 1233 1234 return GUEST_FSFREEZE_STATUS_THAWED; 1235 } 1236 1237 /* 1238 * Freeze local file systems using Volume Shadow-copy Service. 1239 * The frozen state is limited for up to 10 seconds by VSS. 1240 */ 1241 int64_t qmp_guest_fsfreeze_freeze(Error **errp) 1242 { 1243 return qmp_guest_fsfreeze_freeze_list(false, NULL, errp); 1244 } 1245 1246 int64_t qmp_guest_fsfreeze_freeze_list(bool has_mountpoints, 1247 strList *mountpoints, 1248 Error **errp) 1249 { 1250 int i; 1251 Error *local_err = NULL; 1252 1253 if (!vss_initialized()) { 1254 error_setg(errp, "fsfreeze not possible as VSS failed to initialize"); 1255 return 0; 1256 } 1257 1258 slog("guest-fsfreeze called"); 1259 1260 /* cannot risk guest agent blocking itself on a write in this state */ 1261 ga_set_frozen(ga_state); 1262 1263 qga_vss_fsfreeze(&i, true, mountpoints, &local_err); 1264 if (local_err) { 1265 error_propagate(errp, local_err); 1266 goto error; 1267 } 1268 1269 return i; 1270 1271 error: 1272 local_err = NULL; 1273 qmp_guest_fsfreeze_thaw(&local_err); 1274 if (local_err) { 1275 g_debug("cleanup thaw: %s", error_get_pretty(local_err)); 1276 error_free(local_err); 1277 } 1278 return 0; 1279 } 1280 1281 /* 1282 * Thaw local file systems using Volume Shadow-copy Service. 1283 */ 1284 int64_t qmp_guest_fsfreeze_thaw(Error **errp) 1285 { 1286 int i; 1287 1288 if (!vss_initialized()) { 1289 error_setg(errp, "fsfreeze not possible as VSS failed to initialize"); 1290 return 0; 1291 } 1292 1293 qga_vss_fsfreeze(&i, false, NULL, errp); 1294 1295 ga_unset_frozen(ga_state); 1296 1297 slog("guest-fsthaw called"); 1298 1299 return i; 1300 } 1301 1302 static void guest_fsfreeze_cleanup(void) 1303 { 1304 Error *err = NULL; 1305 1306 if (!vss_initialized()) { 1307 return; 1308 } 1309 1310 if (ga_is_frozen(ga_state) == GUEST_FSFREEZE_STATUS_FROZEN) { 1311 qmp_guest_fsfreeze_thaw(&err); 1312 if (err) { 1313 slog("failed to clean up frozen filesystems: %s", 1314 error_get_pretty(err)); 1315 error_free(err); 1316 } 1317 } 1318 1319 vss_deinit(true); 1320 } 1321 1322 /* 1323 * Walk list of mounted file systems in the guest, and discard unused 1324 * areas. 1325 */ 1326 GuestFilesystemTrimResponse * 1327 qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp) 1328 { 1329 GuestFilesystemTrimResponse *resp; 1330 HANDLE handle; 1331 WCHAR guid[MAX_PATH] = L""; 1332 OSVERSIONINFO osvi; 1333 BOOL win8_or_later; 1334 1335 ZeroMemory(&osvi, sizeof(OSVERSIONINFO)); 1336 osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO); 1337 GetVersionEx(&osvi); 1338 win8_or_later = (osvi.dwMajorVersion > 6 || 1339 ((osvi.dwMajorVersion == 6) && 1340 (osvi.dwMinorVersion >= 2))); 1341 if (!win8_or_later) { 1342 error_setg(errp, "fstrim is only supported for Win8+"); 1343 return NULL; 1344 } 1345 1346 handle = FindFirstVolumeW(guid, ARRAYSIZE(guid)); 1347 if (handle == INVALID_HANDLE_VALUE) { 1348 error_setg_win32(errp, GetLastError(), "failed to find any volume"); 1349 return NULL; 1350 } 1351 1352 resp = g_new0(GuestFilesystemTrimResponse, 1); 1353 1354 do { 1355 GuestFilesystemTrimResult *res; 1356 PWCHAR uc_path; 1357 DWORD char_count = 0; 1358 char *path, *out; 1359 GError *gerr = NULL; 1360 gchar *argv[4]; 1361 1362 GetVolumePathNamesForVolumeNameW(guid, NULL, 0, &char_count); 1363 1364 if (GetLastError() != ERROR_MORE_DATA) { 1365 continue; 1366 } 1367 if (GetDriveTypeW(guid) != DRIVE_FIXED) { 1368 continue; 1369 } 1370 1371 uc_path = g_new(WCHAR, char_count); 1372 if (!GetVolumePathNamesForVolumeNameW(guid, uc_path, char_count, 1373 &char_count) || !*uc_path) { 1374 /* strange, but this condition could be faced even with size == 2 */ 1375 g_free(uc_path); 1376 continue; 1377 } 1378 1379 res = g_new0(GuestFilesystemTrimResult, 1); 1380 1381 path = g_utf16_to_utf8(uc_path, char_count, NULL, NULL, &gerr); 1382 1383 g_free(uc_path); 1384 1385 if (!path) { 1386 res->error = g_strdup(gerr->message); 1387 g_error_free(gerr); 1388 break; 1389 } 1390 1391 res->path = path; 1392 1393 QAPI_LIST_PREPEND(resp->paths, res); 1394 1395 memset(argv, 0, sizeof(argv)); 1396 argv[0] = (gchar *)"defrag.exe"; 1397 argv[1] = (gchar *)"/L"; 1398 argv[2] = path; 1399 1400 if (!g_spawn_sync(NULL, argv, NULL, G_SPAWN_SEARCH_PATH, NULL, NULL, 1401 &out /* stdout */, NULL /* stdin */, 1402 NULL, &gerr)) { 1403 res->error = g_strdup(gerr->message); 1404 g_error_free(gerr); 1405 } else { 1406 /* defrag.exe is UGLY. Exit code is ALWAYS zero. 1407 Error is reported in the output with something like 1408 (x89000020) etc code in the stdout */ 1409 1410 int i; 1411 gchar **lines = g_strsplit(out, "\r\n", 0); 1412 g_free(out); 1413 1414 for (i = 0; lines[i] != NULL; i++) { 1415 if (g_strstr_len(lines[i], -1, "(0x") == NULL) { 1416 continue; 1417 } 1418 res->error = g_strdup(lines[i]); 1419 break; 1420 } 1421 g_strfreev(lines); 1422 } 1423 } while (FindNextVolumeW(handle, guid, ARRAYSIZE(guid))); 1424 1425 FindVolumeClose(handle); 1426 return resp; 1427 } 1428 1429 typedef enum { 1430 GUEST_SUSPEND_MODE_DISK, 1431 GUEST_SUSPEND_MODE_RAM 1432 } GuestSuspendMode; 1433 1434 static void check_suspend_mode(GuestSuspendMode mode, Error **errp) 1435 { 1436 SYSTEM_POWER_CAPABILITIES sys_pwr_caps; 1437 1438 ZeroMemory(&sys_pwr_caps, sizeof(sys_pwr_caps)); 1439 if (!GetPwrCapabilities(&sys_pwr_caps)) { 1440 error_setg(errp, "failed to determine guest suspend capabilities"); 1441 return; 1442 } 1443 1444 switch (mode) { 1445 case GUEST_SUSPEND_MODE_DISK: 1446 if (!sys_pwr_caps.SystemS4) { 1447 error_setg(errp, "suspend-to-disk not supported by OS"); 1448 } 1449 break; 1450 case GUEST_SUSPEND_MODE_RAM: 1451 if (!sys_pwr_caps.SystemS3) { 1452 error_setg(errp, "suspend-to-ram not supported by OS"); 1453 } 1454 break; 1455 default: 1456 abort(); 1457 } 1458 } 1459 1460 static DWORD WINAPI do_suspend(LPVOID opaque) 1461 { 1462 GuestSuspendMode *mode = opaque; 1463 DWORD ret = 0; 1464 1465 if (!SetSuspendState(*mode == GUEST_SUSPEND_MODE_DISK, TRUE, TRUE)) { 1466 g_autofree gchar *emsg = g_win32_error_message(GetLastError()); 1467 slog("failed to suspend guest: %s", emsg); 1468 ret = -1; 1469 } 1470 g_free(mode); 1471 return ret; 1472 } 1473 1474 void qmp_guest_suspend_disk(Error **errp) 1475 { 1476 Error *local_err = NULL; 1477 GuestSuspendMode *mode = g_new(GuestSuspendMode, 1); 1478 1479 *mode = GUEST_SUSPEND_MODE_DISK; 1480 check_suspend_mode(*mode, &local_err); 1481 if (local_err) { 1482 goto out; 1483 } 1484 acquire_privilege(SE_SHUTDOWN_NAME, &local_err); 1485 if (local_err) { 1486 goto out; 1487 } 1488 execute_async(do_suspend, mode, &local_err); 1489 1490 out: 1491 if (local_err) { 1492 error_propagate(errp, local_err); 1493 g_free(mode); 1494 } 1495 } 1496 1497 void qmp_guest_suspend_ram(Error **errp) 1498 { 1499 Error *local_err = NULL; 1500 GuestSuspendMode *mode = g_new(GuestSuspendMode, 1); 1501 1502 *mode = GUEST_SUSPEND_MODE_RAM; 1503 check_suspend_mode(*mode, &local_err); 1504 if (local_err) { 1505 goto out; 1506 } 1507 acquire_privilege(SE_SHUTDOWN_NAME, &local_err); 1508 if (local_err) { 1509 goto out; 1510 } 1511 execute_async(do_suspend, mode, &local_err); 1512 1513 out: 1514 if (local_err) { 1515 error_propagate(errp, local_err); 1516 g_free(mode); 1517 } 1518 } 1519 1520 static IP_ADAPTER_ADDRESSES *guest_get_adapters_addresses(Error **errp) 1521 { 1522 IP_ADAPTER_ADDRESSES *adptr_addrs = NULL; 1523 ULONG adptr_addrs_len = 0; 1524 DWORD ret; 1525 1526 /* Call the first time to get the adptr_addrs_len. */ 1527 GetAdaptersAddresses(AF_UNSPEC, GAA_FLAG_INCLUDE_PREFIX, 1528 NULL, adptr_addrs, &adptr_addrs_len); 1529 1530 adptr_addrs = g_malloc(adptr_addrs_len); 1531 ret = GetAdaptersAddresses(AF_UNSPEC, GAA_FLAG_INCLUDE_PREFIX, 1532 NULL, adptr_addrs, &adptr_addrs_len); 1533 if (ret != ERROR_SUCCESS) { 1534 error_setg_win32(errp, ret, "failed to get adapters addresses"); 1535 g_free(adptr_addrs); 1536 adptr_addrs = NULL; 1537 } 1538 return adptr_addrs; 1539 } 1540 1541 static char *guest_wctomb_dup(WCHAR *wstr) 1542 { 1543 char *str; 1544 size_t str_size; 1545 1546 str_size = WideCharToMultiByte(CP_UTF8, 0, wstr, -1, NULL, 0, NULL, NULL); 1547 /* add 1 to str_size for NULL terminator */ 1548 str = g_malloc(str_size + 1); 1549 WideCharToMultiByte(CP_UTF8, 0, wstr, -1, str, str_size, NULL, NULL); 1550 return str; 1551 } 1552 1553 static char *guest_addr_to_str(IP_ADAPTER_UNICAST_ADDRESS *ip_addr, 1554 Error **errp) 1555 { 1556 char addr_str[INET6_ADDRSTRLEN + INET_ADDRSTRLEN]; 1557 DWORD len; 1558 int ret; 1559 1560 if (ip_addr->Address.lpSockaddr->sa_family == AF_INET || 1561 ip_addr->Address.lpSockaddr->sa_family == AF_INET6) { 1562 len = sizeof(addr_str); 1563 ret = WSAAddressToString(ip_addr->Address.lpSockaddr, 1564 ip_addr->Address.iSockaddrLength, 1565 NULL, 1566 addr_str, 1567 &len); 1568 if (ret != 0) { 1569 error_setg_win32(errp, WSAGetLastError(), 1570 "failed address presentation form conversion"); 1571 return NULL; 1572 } 1573 return g_strdup(addr_str); 1574 } 1575 return NULL; 1576 } 1577 1578 static int64_t guest_ip_prefix(IP_ADAPTER_UNICAST_ADDRESS *ip_addr) 1579 { 1580 /* For Windows Vista/2008 and newer, use the OnLinkPrefixLength 1581 * field to obtain the prefix. 1582 */ 1583 return ip_addr->OnLinkPrefixLength; 1584 } 1585 1586 #define INTERFACE_PATH_BUF_SZ 512 1587 1588 static DWORD get_interface_index(const char *guid) 1589 { 1590 ULONG index; 1591 DWORD status; 1592 wchar_t wbuf[INTERFACE_PATH_BUF_SZ]; 1593 snwprintf(wbuf, INTERFACE_PATH_BUF_SZ, L"\\device\\tcpip_%s", guid); 1594 wbuf[INTERFACE_PATH_BUF_SZ - 1] = 0; 1595 status = GetAdapterIndex (wbuf, &index); 1596 if (status != NO_ERROR) { 1597 return (DWORD)~0; 1598 } else { 1599 return index; 1600 } 1601 } 1602 1603 typedef NETIOAPI_API (WINAPI *GetIfEntry2Func)(PMIB_IF_ROW2 Row); 1604 1605 static int guest_get_network_stats(const char *name, 1606 GuestNetworkInterfaceStat *stats) 1607 { 1608 OSVERSIONINFO os_ver; 1609 1610 os_ver.dwOSVersionInfoSize = sizeof(OSVERSIONINFO); 1611 GetVersionEx(&os_ver); 1612 if (os_ver.dwMajorVersion >= 6) { 1613 MIB_IF_ROW2 a_mid_ifrow; 1614 GetIfEntry2Func getifentry2_ex; 1615 DWORD if_index = 0; 1616 HMODULE module = GetModuleHandle("iphlpapi"); 1617 PVOID func = GetProcAddress(module, "GetIfEntry2"); 1618 1619 if (func == NULL) { 1620 return -1; 1621 } 1622 1623 getifentry2_ex = (GetIfEntry2Func)func; 1624 if_index = get_interface_index(name); 1625 if (if_index == (DWORD)~0) { 1626 return -1; 1627 } 1628 1629 memset(&a_mid_ifrow, 0, sizeof(a_mid_ifrow)); 1630 a_mid_ifrow.InterfaceIndex = if_index; 1631 if (NO_ERROR == getifentry2_ex(&a_mid_ifrow)) { 1632 stats->rx_bytes = a_mid_ifrow.InOctets; 1633 stats->rx_packets = a_mid_ifrow.InUcastPkts; 1634 stats->rx_errs = a_mid_ifrow.InErrors; 1635 stats->rx_dropped = a_mid_ifrow.InDiscards; 1636 stats->tx_bytes = a_mid_ifrow.OutOctets; 1637 stats->tx_packets = a_mid_ifrow.OutUcastPkts; 1638 stats->tx_errs = a_mid_ifrow.OutErrors; 1639 stats->tx_dropped = a_mid_ifrow.OutDiscards; 1640 return 0; 1641 } 1642 } 1643 return -1; 1644 } 1645 1646 GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp) 1647 { 1648 IP_ADAPTER_ADDRESSES *adptr_addrs, *addr; 1649 IP_ADAPTER_UNICAST_ADDRESS *ip_addr = NULL; 1650 GuestNetworkInterfaceList *head = NULL, **tail = &head; 1651 GuestIpAddressList *head_addr, **tail_addr; 1652 GuestNetworkInterface *info; 1653 GuestNetworkInterfaceStat *interface_stat = NULL; 1654 GuestIpAddress *address_item = NULL; 1655 unsigned char *mac_addr; 1656 char *addr_str; 1657 WORD wsa_version; 1658 WSADATA wsa_data; 1659 int ret; 1660 1661 adptr_addrs = guest_get_adapters_addresses(errp); 1662 if (adptr_addrs == NULL) { 1663 return NULL; 1664 } 1665 1666 /* Make WSA APIs available. */ 1667 wsa_version = MAKEWORD(2, 2); 1668 ret = WSAStartup(wsa_version, &wsa_data); 1669 if (ret != 0) { 1670 error_setg_win32(errp, ret, "failed socket startup"); 1671 goto out; 1672 } 1673 1674 for (addr = adptr_addrs; addr; addr = addr->Next) { 1675 info = g_malloc0(sizeof(*info)); 1676 1677 QAPI_LIST_APPEND(tail, info); 1678 1679 info->name = guest_wctomb_dup(addr->FriendlyName); 1680 1681 if (addr->PhysicalAddressLength != 0) { 1682 mac_addr = addr->PhysicalAddress; 1683 1684 info->hardware_address = 1685 g_strdup_printf("%02x:%02x:%02x:%02x:%02x:%02x", 1686 (int) mac_addr[0], (int) mac_addr[1], 1687 (int) mac_addr[2], (int) mac_addr[3], 1688 (int) mac_addr[4], (int) mac_addr[5]); 1689 } 1690 1691 head_addr = NULL; 1692 tail_addr = &head_addr; 1693 for (ip_addr = addr->FirstUnicastAddress; 1694 ip_addr; 1695 ip_addr = ip_addr->Next) { 1696 addr_str = guest_addr_to_str(ip_addr, errp); 1697 if (addr_str == NULL) { 1698 continue; 1699 } 1700 1701 address_item = g_malloc0(sizeof(*address_item)); 1702 1703 QAPI_LIST_APPEND(tail_addr, address_item); 1704 1705 address_item->ip_address = addr_str; 1706 address_item->prefix = guest_ip_prefix(ip_addr); 1707 if (ip_addr->Address.lpSockaddr->sa_family == AF_INET) { 1708 address_item->ip_address_type = GUEST_IP_ADDRESS_TYPE_IPV4; 1709 } else if (ip_addr->Address.lpSockaddr->sa_family == AF_INET6) { 1710 address_item->ip_address_type = GUEST_IP_ADDRESS_TYPE_IPV6; 1711 } 1712 } 1713 if (head_addr) { 1714 info->has_ip_addresses = true; 1715 info->ip_addresses = head_addr; 1716 } 1717 if (!info->statistics) { 1718 interface_stat = g_malloc0(sizeof(*interface_stat)); 1719 if (guest_get_network_stats(addr->AdapterName, interface_stat) 1720 == -1) { 1721 g_free(interface_stat); 1722 } else { 1723 info->statistics = interface_stat; 1724 } 1725 } 1726 } 1727 WSACleanup(); 1728 out: 1729 g_free(adptr_addrs); 1730 return head; 1731 } 1732 1733 static int64_t filetime_to_ns(const FILETIME *tf) 1734 { 1735 return ((((int64_t)tf->dwHighDateTime << 32) | tf->dwLowDateTime) 1736 - W32_FT_OFFSET) * 100; 1737 } 1738 1739 void qmp_guest_set_time(bool has_time, int64_t time_ns, Error **errp) 1740 { 1741 Error *local_err = NULL; 1742 SYSTEMTIME ts; 1743 FILETIME tf; 1744 LONGLONG time; 1745 1746 if (!has_time) { 1747 /* Unfortunately, Windows libraries don't provide an easy way to access 1748 * RTC yet: 1749 * 1750 * https://msdn.microsoft.com/en-us/library/aa908981.aspx 1751 * 1752 * Instead, a workaround is to use the Windows win32tm command to 1753 * resync the time using the Windows Time service. 1754 */ 1755 LPVOID msg_buffer; 1756 DWORD ret_flags; 1757 1758 HRESULT hr = system("w32tm /resync /nowait"); 1759 1760 if (GetLastError() != 0) { 1761 strerror_s((LPTSTR) & msg_buffer, 0, errno); 1762 error_setg(errp, "system(...) failed: %s", (LPCTSTR)msg_buffer); 1763 } else if (hr != 0) { 1764 if (hr == HRESULT_FROM_WIN32(ERROR_SERVICE_NOT_ACTIVE)) { 1765 error_setg(errp, "Windows Time service not running on the " 1766 "guest"); 1767 } else { 1768 if (!FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | 1769 FORMAT_MESSAGE_FROM_SYSTEM | 1770 FORMAT_MESSAGE_IGNORE_INSERTS, NULL, 1771 (DWORD)hr, MAKELANGID(LANG_NEUTRAL, 1772 SUBLANG_DEFAULT), (LPTSTR) & msg_buffer, 0, 1773 NULL)) { 1774 error_setg(errp, "w32tm failed with error (0x%lx), couldn'" 1775 "t retrieve error message", hr); 1776 } else { 1777 error_setg(errp, "w32tm failed with error (0x%lx): %s", hr, 1778 (LPCTSTR)msg_buffer); 1779 LocalFree(msg_buffer); 1780 } 1781 } 1782 } else if (!InternetGetConnectedState(&ret_flags, 0)) { 1783 error_setg(errp, "No internet connection on guest, sync not " 1784 "accurate"); 1785 } 1786 return; 1787 } 1788 1789 /* Validate time passed by user. */ 1790 if (time_ns < 0 || time_ns / 100 > INT64_MAX - W32_FT_OFFSET) { 1791 error_setg(errp, "Time %" PRId64 "is invalid", time_ns); 1792 return; 1793 } 1794 1795 time = time_ns / 100 + W32_FT_OFFSET; 1796 1797 tf.dwLowDateTime = (DWORD) time; 1798 tf.dwHighDateTime = (DWORD) (time >> 32); 1799 1800 if (!FileTimeToSystemTime(&tf, &ts)) { 1801 error_setg(errp, "Failed to convert system time %d", 1802 (int)GetLastError()); 1803 return; 1804 } 1805 1806 acquire_privilege(SE_SYSTEMTIME_NAME, &local_err); 1807 if (local_err) { 1808 error_propagate(errp, local_err); 1809 return; 1810 } 1811 1812 if (!SetSystemTime(&ts)) { 1813 error_setg(errp, "Failed to set time to guest: %d", (int)GetLastError()); 1814 return; 1815 } 1816 } 1817 1818 GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp) 1819 { 1820 PSYSTEM_LOGICAL_PROCESSOR_INFORMATION pslpi, ptr; 1821 DWORD length; 1822 GuestLogicalProcessorList *head, **tail; 1823 Error *local_err = NULL; 1824 int64_t current; 1825 1826 ptr = pslpi = NULL; 1827 length = 0; 1828 current = 0; 1829 head = NULL; 1830 tail = &head; 1831 1832 if ((GetLogicalProcessorInformation(pslpi, &length) == FALSE) && 1833 (GetLastError() == ERROR_INSUFFICIENT_BUFFER) && 1834 (length > sizeof(SYSTEM_LOGICAL_PROCESSOR_INFORMATION))) { 1835 ptr = pslpi = g_malloc0(length); 1836 if (GetLogicalProcessorInformation(pslpi, &length) == FALSE) { 1837 error_setg(&local_err, "Failed to get processor information: %d", 1838 (int)GetLastError()); 1839 } 1840 } else { 1841 error_setg(&local_err, 1842 "Failed to get processor information buffer length: %d", 1843 (int)GetLastError()); 1844 } 1845 1846 while ((local_err == NULL) && (length > 0)) { 1847 if (pslpi->Relationship == RelationProcessorCore) { 1848 ULONG_PTR cpu_bits = pslpi->ProcessorMask; 1849 1850 while (cpu_bits > 0) { 1851 if (!!(cpu_bits & 1)) { 1852 GuestLogicalProcessor *vcpu; 1853 1854 vcpu = g_malloc0(sizeof *vcpu); 1855 vcpu->logical_id = current++; 1856 vcpu->online = true; 1857 vcpu->has_can_offline = true; 1858 1859 QAPI_LIST_APPEND(tail, vcpu); 1860 } 1861 cpu_bits >>= 1; 1862 } 1863 } 1864 length -= sizeof(SYSTEM_LOGICAL_PROCESSOR_INFORMATION); 1865 pslpi++; /* next entry */ 1866 } 1867 1868 g_free(ptr); 1869 1870 if (local_err == NULL) { 1871 if (head != NULL) { 1872 return head; 1873 } 1874 /* there's no guest with zero VCPUs */ 1875 error_setg(&local_err, "Guest reported zero VCPUs"); 1876 } 1877 1878 qapi_free_GuestLogicalProcessorList(head); 1879 error_propagate(errp, local_err); 1880 return NULL; 1881 } 1882 1883 static gchar * 1884 get_net_error_message(gint error) 1885 { 1886 HMODULE module = NULL; 1887 gchar *retval = NULL; 1888 wchar_t *msg = NULL; 1889 int flags; 1890 size_t nchars; 1891 1892 flags = FORMAT_MESSAGE_ALLOCATE_BUFFER | 1893 FORMAT_MESSAGE_IGNORE_INSERTS | 1894 FORMAT_MESSAGE_FROM_SYSTEM; 1895 1896 if (error >= NERR_BASE && error <= MAX_NERR) { 1897 module = LoadLibraryExW(L"netmsg.dll", NULL, LOAD_LIBRARY_AS_DATAFILE); 1898 1899 if (module != NULL) { 1900 flags |= FORMAT_MESSAGE_FROM_HMODULE; 1901 } 1902 } 1903 1904 FormatMessageW(flags, module, error, 0, (LPWSTR)&msg, 0, NULL); 1905 1906 if (msg != NULL) { 1907 nchars = wcslen(msg); 1908 1909 if (nchars >= 2 && 1910 msg[nchars - 1] == L'\n' && 1911 msg[nchars - 2] == L'\r') { 1912 msg[nchars - 2] = L'\0'; 1913 } 1914 1915 retval = g_utf16_to_utf8(msg, -1, NULL, NULL, NULL); 1916 1917 LocalFree(msg); 1918 } 1919 1920 if (module != NULL) { 1921 FreeLibrary(module); 1922 } 1923 1924 return retval; 1925 } 1926 1927 void qmp_guest_set_user_password(const char *username, 1928 const char *password, 1929 bool crypted, 1930 Error **errp) 1931 { 1932 NET_API_STATUS nas; 1933 char *rawpasswddata = NULL; 1934 size_t rawpasswdlen; 1935 wchar_t *user = NULL, *wpass = NULL; 1936 USER_INFO_1003 pi1003 = { 0, }; 1937 GError *gerr = NULL; 1938 1939 if (crypted) { 1940 error_setg(errp, "'crypted' must be off on this host"); 1941 return; 1942 } 1943 1944 rawpasswddata = (char *)qbase64_decode(password, -1, &rawpasswdlen, errp); 1945 if (!rawpasswddata) { 1946 return; 1947 } 1948 rawpasswddata = g_renew(char, rawpasswddata, rawpasswdlen + 1); 1949 rawpasswddata[rawpasswdlen] = '\0'; 1950 1951 user = g_utf8_to_utf16(username, -1, NULL, NULL, &gerr); 1952 if (!user) { 1953 error_setg(errp, "can't convert 'username' to UTF-16: %s", 1954 gerr->message); 1955 g_error_free(gerr); 1956 goto done; 1957 } 1958 1959 wpass = g_utf8_to_utf16(rawpasswddata, -1, NULL, NULL, &gerr); 1960 if (!wpass) { 1961 error_setg(errp, "can't convert 'password' to UTF-16: %s", 1962 gerr->message); 1963 g_error_free(gerr); 1964 goto done; 1965 } 1966 1967 pi1003.usri1003_password = wpass; 1968 nas = NetUserSetInfo(NULL, user, 1969 1003, (LPBYTE)&pi1003, 1970 NULL); 1971 1972 if (nas != NERR_Success) { 1973 gchar *msg = get_net_error_message(nas); 1974 error_setg(errp, "failed to set password: %s", msg); 1975 g_free(msg); 1976 } 1977 1978 done: 1979 g_free(user); 1980 g_free(wpass); 1981 g_free(rawpasswddata); 1982 } 1983 1984 /* register init/cleanup routines for stateful command groups */ 1985 void ga_command_state_init(GAState *s, GACommandState *cs) 1986 { 1987 if (!vss_initialized()) { 1988 ga_command_state_add(cs, NULL, guest_fsfreeze_cleanup); 1989 } 1990 } 1991 1992 /* MINGW is missing two fields: IncomingFrames & OutgoingFrames */ 1993 typedef struct _GA_WTSINFOA { 1994 WTS_CONNECTSTATE_CLASS State; 1995 DWORD SessionId; 1996 DWORD IncomingBytes; 1997 DWORD OutgoingBytes; 1998 DWORD IncomingFrames; 1999 DWORD OutgoingFrames; 2000 DWORD IncomingCompressedBytes; 2001 DWORD OutgoingCompressedBy; 2002 CHAR WinStationName[WINSTATIONNAME_LENGTH]; 2003 CHAR Domain[DOMAIN_LENGTH]; 2004 CHAR UserName[USERNAME_LENGTH + 1]; 2005 LARGE_INTEGER ConnectTime; 2006 LARGE_INTEGER DisconnectTime; 2007 LARGE_INTEGER LastInputTime; 2008 LARGE_INTEGER LogonTime; 2009 LARGE_INTEGER CurrentTime; 2010 2011 } GA_WTSINFOA; 2012 2013 GuestUserList *qmp_guest_get_users(Error **errp) 2014 { 2015 #define QGA_NANOSECONDS 10000000 2016 2017 GHashTable *cache = NULL; 2018 GuestUserList *head = NULL, **tail = &head; 2019 2020 DWORD buffer_size = 0, count = 0, i = 0; 2021 GA_WTSINFOA *info = NULL; 2022 WTS_SESSION_INFOA *entries = NULL; 2023 GuestUser *user = NULL; 2024 gpointer value = NULL; 2025 INT64 login = 0; 2026 double login_time = 0; 2027 2028 cache = g_hash_table_new(g_str_hash, g_str_equal); 2029 2030 if (WTSEnumerateSessionsA(NULL, 0, 1, &entries, &count)) { 2031 for (i = 0; i < count; ++i) { 2032 buffer_size = 0; 2033 info = NULL; 2034 if (WTSQuerySessionInformationA( 2035 NULL, 2036 entries[i].SessionId, 2037 WTSSessionInfo, 2038 (LPSTR *)&info, 2039 &buffer_size 2040 )) { 2041 2042 if (strlen(info->UserName) == 0) { 2043 WTSFreeMemory(info); 2044 continue; 2045 } 2046 2047 login = info->LogonTime.QuadPart; 2048 login -= W32_FT_OFFSET; 2049 login_time = ((double)login) / QGA_NANOSECONDS; 2050 2051 if (g_hash_table_contains(cache, info->UserName)) { 2052 value = g_hash_table_lookup(cache, info->UserName); 2053 user = (GuestUser *)value; 2054 if (user->login_time > login_time) { 2055 user->login_time = login_time; 2056 } 2057 } else { 2058 user = g_new0(GuestUser, 1); 2059 2060 user->user = g_strdup(info->UserName); 2061 user->domain = g_strdup(info->Domain); 2062 2063 user->login_time = login_time; 2064 2065 g_hash_table_add(cache, user->user); 2066 2067 QAPI_LIST_APPEND(tail, user); 2068 } 2069 } 2070 WTSFreeMemory(info); 2071 } 2072 WTSFreeMemory(entries); 2073 } 2074 g_hash_table_destroy(cache); 2075 return head; 2076 } 2077 2078 typedef struct _ga_matrix_lookup_t { 2079 int major; 2080 int minor; 2081 const char *version; 2082 const char *version_id; 2083 } ga_matrix_lookup_t; 2084 2085 static const ga_matrix_lookup_t WIN_CLIENT_VERSION_MATRIX[] = { 2086 { 5, 0, "Microsoft Windows 2000", "2000"}, 2087 { 5, 1, "Microsoft Windows XP", "xp"}, 2088 { 6, 0, "Microsoft Windows Vista", "vista"}, 2089 { 6, 1, "Microsoft Windows 7" "7"}, 2090 { 6, 2, "Microsoft Windows 8", "8"}, 2091 { 6, 3, "Microsoft Windows 8.1", "8.1"}, 2092 { } 2093 }; 2094 2095 static const ga_matrix_lookup_t WIN_SERVER_VERSION_MATRIX[] = { 2096 { 5, 2, "Microsoft Windows Server 2003", "2003"}, 2097 { 6, 0, "Microsoft Windows Server 2008", "2008"}, 2098 { 6, 1, "Microsoft Windows Server 2008 R2", "2008r2"}, 2099 { 6, 2, "Microsoft Windows Server 2012", "2012"}, 2100 { 6, 3, "Microsoft Windows Server 2012 R2", "2012r2"}, 2101 { }, 2102 }; 2103 2104 typedef struct _ga_win_10_0_t { 2105 int first_build; 2106 const char *version; 2107 const char *version_id; 2108 } ga_win_10_0_t; 2109 2110 static const ga_win_10_0_t WIN_10_0_SERVER_VERSION_MATRIX[] = { 2111 {14393, "Microsoft Windows Server 2016", "2016"}, 2112 {17763, "Microsoft Windows Server 2019", "2019"}, 2113 {20344, "Microsoft Windows Server 2022", "2022"}, 2114 {26040, "Microsoft Windows Server 2025", "2025"}, 2115 { } 2116 }; 2117 2118 static const ga_win_10_0_t WIN_10_0_CLIENT_VERSION_MATRIX[] = { 2119 {10240, "Microsoft Windows 10", "10"}, 2120 {22000, "Microsoft Windows 11", "11"}, 2121 { } 2122 }; 2123 2124 static void ga_get_win_version(RTL_OSVERSIONINFOEXW *info, Error **errp) 2125 { 2126 typedef NTSTATUS(WINAPI *rtl_get_version_t)( 2127 RTL_OSVERSIONINFOEXW *os_version_info_ex); 2128 2129 info->dwOSVersionInfoSize = sizeof(RTL_OSVERSIONINFOEXW); 2130 2131 HMODULE module = GetModuleHandle("ntdll"); 2132 PVOID fun = GetProcAddress(module, "RtlGetVersion"); 2133 if (fun == NULL) { 2134 error_setg(errp, "Failed to get address of RtlGetVersion"); 2135 return; 2136 } 2137 2138 rtl_get_version_t rtl_get_version = (rtl_get_version_t)fun; 2139 rtl_get_version(info); 2140 } 2141 2142 static char *ga_get_win_name(const OSVERSIONINFOEXW *os_version, bool id) 2143 { 2144 DWORD major = os_version->dwMajorVersion; 2145 DWORD minor = os_version->dwMinorVersion; 2146 DWORD build = os_version->dwBuildNumber; 2147 int tbl_idx = (os_version->wProductType != VER_NT_WORKSTATION); 2148 const ga_matrix_lookup_t *table = tbl_idx ? 2149 WIN_SERVER_VERSION_MATRIX : WIN_CLIENT_VERSION_MATRIX; 2150 const ga_win_10_0_t *win_10_0_table = tbl_idx ? 2151 WIN_10_0_SERVER_VERSION_MATRIX : WIN_10_0_CLIENT_VERSION_MATRIX; 2152 const ga_win_10_0_t *win_10_0_version = NULL; 2153 while (table->version != NULL) { 2154 if (major == 10 && minor == 0) { 2155 while (win_10_0_table->version != NULL) { 2156 if (build >= win_10_0_table->first_build) { 2157 win_10_0_version = win_10_0_table; 2158 } 2159 win_10_0_table++; 2160 } 2161 if (win_10_0_table) { 2162 if (id) { 2163 return g_strdup(win_10_0_version->version_id); 2164 } else { 2165 return g_strdup(win_10_0_version->version); 2166 } 2167 } 2168 } else if (major == table->major && minor == table->minor) { 2169 if (id) { 2170 return g_strdup(table->version_id); 2171 } else { 2172 return g_strdup(table->version); 2173 } 2174 } 2175 ++table; 2176 } 2177 slog("failed to lookup Windows version: major=%lu, minor=%lu", 2178 major, minor); 2179 return g_strdup("N/A"); 2180 } 2181 2182 static char *ga_get_win_product_name(Error **errp) 2183 { 2184 HKEY key = INVALID_HANDLE_VALUE; 2185 DWORD size = 128; 2186 char *result = g_malloc0(size); 2187 LONG err = ERROR_SUCCESS; 2188 2189 err = RegOpenKeyA(HKEY_LOCAL_MACHINE, 2190 "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion", 2191 &key); 2192 if (err != ERROR_SUCCESS) { 2193 error_setg_win32(errp, err, "failed to open registry key"); 2194 g_free(result); 2195 return NULL; 2196 } 2197 2198 err = RegQueryValueExA(key, "ProductName", NULL, NULL, 2199 (LPBYTE)result, &size); 2200 if (err == ERROR_MORE_DATA) { 2201 slog("ProductName longer than expected (%lu bytes), retrying", 2202 size); 2203 g_free(result); 2204 result = NULL; 2205 if (size > 0) { 2206 result = g_malloc0(size); 2207 err = RegQueryValueExA(key, "ProductName", NULL, NULL, 2208 (LPBYTE)result, &size); 2209 } 2210 } 2211 if (err != ERROR_SUCCESS) { 2212 error_setg_win32(errp, err, "failed to retrieve ProductName"); 2213 goto fail; 2214 } 2215 2216 RegCloseKey(key); 2217 return result; 2218 2219 fail: 2220 if (key != INVALID_HANDLE_VALUE) { 2221 RegCloseKey(key); 2222 } 2223 g_free(result); 2224 return NULL; 2225 } 2226 2227 static char *ga_get_current_arch(void) 2228 { 2229 SYSTEM_INFO info; 2230 GetNativeSystemInfo(&info); 2231 char *result = NULL; 2232 switch (info.wProcessorArchitecture) { 2233 case PROCESSOR_ARCHITECTURE_AMD64: 2234 result = g_strdup("x86_64"); 2235 break; 2236 case PROCESSOR_ARCHITECTURE_ARM: 2237 result = g_strdup("arm"); 2238 break; 2239 case PROCESSOR_ARCHITECTURE_IA64: 2240 result = g_strdup("ia64"); 2241 break; 2242 case PROCESSOR_ARCHITECTURE_INTEL: 2243 result = g_strdup("x86"); 2244 break; 2245 case PROCESSOR_ARCHITECTURE_UNKNOWN: 2246 default: 2247 slog("unknown processor architecture 0x%0x", 2248 info.wProcessorArchitecture); 2249 result = g_strdup("unknown"); 2250 break; 2251 } 2252 return result; 2253 } 2254 2255 GuestOSInfo *qmp_guest_get_osinfo(Error **errp) 2256 { 2257 Error *local_err = NULL; 2258 OSVERSIONINFOEXW os_version = {0}; 2259 bool server; 2260 char *product_name; 2261 GuestOSInfo *info; 2262 2263 ga_get_win_version(&os_version, &local_err); 2264 if (local_err) { 2265 error_propagate(errp, local_err); 2266 return NULL; 2267 } 2268 2269 server = os_version.wProductType != VER_NT_WORKSTATION; 2270 product_name = ga_get_win_product_name(errp); 2271 if (product_name == NULL) { 2272 return NULL; 2273 } 2274 2275 info = g_new0(GuestOSInfo, 1); 2276 2277 info->kernel_version = g_strdup_printf("%lu.%lu", 2278 os_version.dwMajorVersion, 2279 os_version.dwMinorVersion); 2280 info->kernel_release = g_strdup_printf("%lu", 2281 os_version.dwBuildNumber); 2282 info->machine = ga_get_current_arch(); 2283 2284 info->id = g_strdup("mswindows"); 2285 info->name = g_strdup("Microsoft Windows"); 2286 info->pretty_name = product_name; 2287 info->version = ga_get_win_name(&os_version, false); 2288 info->version_id = ga_get_win_name(&os_version, true); 2289 info->variant = g_strdup(server ? "server" : "client"); 2290 info->variant_id = g_strdup(server ? "server" : "client"); 2291 2292 return info; 2293 } 2294 2295 /* 2296 * Safely get device property. Returned strings are using wide characters. 2297 * Caller is responsible for freeing the buffer. 2298 */ 2299 static LPBYTE cm_get_property(DEVINST devInst, const DEVPROPKEY *propName, 2300 PDEVPROPTYPE propType) 2301 { 2302 CONFIGRET cr; 2303 g_autofree LPBYTE buffer = NULL; 2304 ULONG buffer_len = 0; 2305 2306 /* First query for needed space */ 2307 cr = CM_Get_DevNode_PropertyW(devInst, propName, propType, 2308 buffer, &buffer_len, 0); 2309 if (cr != CR_SUCCESS && cr != CR_BUFFER_SMALL) { 2310 2311 slog("failed to get property size, error=0x%lx", cr); 2312 return NULL; 2313 } 2314 buffer = g_new0(BYTE, buffer_len + 1); 2315 cr = CM_Get_DevNode_PropertyW(devInst, propName, propType, 2316 buffer, &buffer_len, 0); 2317 if (cr != CR_SUCCESS) { 2318 slog("failed to get device property, error=0x%lx", cr); 2319 return NULL; 2320 } 2321 return g_steal_pointer(&buffer); 2322 } 2323 2324 static GStrv ga_get_hardware_ids(DEVINST devInstance) 2325 { 2326 GArray *values = NULL; 2327 DEVPROPTYPE cm_type; 2328 LPWSTR id; 2329 g_autofree LPWSTR property = (LPWSTR)cm_get_property(devInstance, 2330 &qga_DEVPKEY_Device_HardwareIds, &cm_type); 2331 if (property == NULL) { 2332 slog("failed to get hardware IDs"); 2333 return NULL; 2334 } 2335 if (*property == '\0') { 2336 /* empty list */ 2337 return NULL; 2338 } 2339 values = g_array_new(TRUE, TRUE, sizeof(gchar *)); 2340 for (id = property; '\0' != *id; id += lstrlenW(id) + 1) { 2341 gchar *id8 = g_utf16_to_utf8(id, -1, NULL, NULL, NULL); 2342 g_array_append_val(values, id8); 2343 } 2344 return (GStrv)g_array_free(values, FALSE); 2345 } 2346 2347 /* 2348 * https://docs.microsoft.com/en-us/windows-hardware/drivers/install/identifiers-for-pci-devices 2349 */ 2350 #define DEVICE_PCI_RE "PCI\\\\VEN_(1AF4|1B36)&DEV_([0-9A-B]{4})(&|$)" 2351 2352 GuestDeviceInfoList *qmp_guest_get_devices(Error **errp) 2353 { 2354 GuestDeviceInfoList *head = NULL, **tail = &head; 2355 HDEVINFO dev_info = INVALID_HANDLE_VALUE; 2356 SP_DEVINFO_DATA dev_info_data; 2357 int i, j; 2358 GError *gerr = NULL; 2359 g_autoptr(GRegex) device_pci_re = NULL; 2360 DEVPROPTYPE cm_type; 2361 2362 device_pci_re = g_regex_new(DEVICE_PCI_RE, 2363 G_REGEX_ANCHORED | G_REGEX_OPTIMIZE, 0, 2364 &gerr); 2365 g_assert(device_pci_re != NULL); 2366 2367 dev_info_data.cbSize = sizeof(SP_DEVINFO_DATA); 2368 dev_info = SetupDiGetClassDevs(0, 0, 0, DIGCF_PRESENT | DIGCF_ALLCLASSES); 2369 if (dev_info == INVALID_HANDLE_VALUE) { 2370 error_setg(errp, "failed to get device tree"); 2371 return NULL; 2372 } 2373 2374 slog("enumerating devices"); 2375 for (i = 0; SetupDiEnumDeviceInfo(dev_info, i, &dev_info_data); i++) { 2376 bool skip = true; 2377 g_autofree LPWSTR name = NULL; 2378 g_autofree LPFILETIME date = NULL; 2379 g_autofree LPWSTR version = NULL; 2380 g_auto(GStrv) hw_ids = NULL; 2381 g_autoptr(GuestDeviceInfo) device = g_new0(GuestDeviceInfo, 1); 2382 g_autofree char *vendor_id = NULL; 2383 g_autofree char *device_id = NULL; 2384 2385 name = (LPWSTR)cm_get_property(dev_info_data.DevInst, 2386 &qga_DEVPKEY_NAME, &cm_type); 2387 if (name == NULL) { 2388 slog("failed to get device description"); 2389 continue; 2390 } 2391 device->driver_name = g_utf16_to_utf8(name, -1, NULL, NULL, NULL); 2392 if (device->driver_name == NULL) { 2393 error_setg(errp, "conversion to utf8 failed (driver name)"); 2394 return NULL; 2395 } 2396 slog("querying device: %s", device->driver_name); 2397 hw_ids = ga_get_hardware_ids(dev_info_data.DevInst); 2398 if (hw_ids == NULL) { 2399 continue; 2400 } 2401 for (j = 0; hw_ids[j] != NULL; j++) { 2402 g_autoptr(GMatchInfo) match_info; 2403 GuestDeviceIdPCI *id; 2404 if (!g_regex_match(device_pci_re, hw_ids[j], 0, &match_info)) { 2405 continue; 2406 } 2407 skip = false; 2408 2409 vendor_id = g_match_info_fetch(match_info, 1); 2410 device_id = g_match_info_fetch(match_info, 2); 2411 2412 device->id = g_new0(GuestDeviceId, 1); 2413 device->id->type = GUEST_DEVICE_TYPE_PCI; 2414 id = &device->id->u.pci; 2415 id->vendor_id = g_ascii_strtoull(vendor_id, NULL, 16); 2416 id->device_id = g_ascii_strtoull(device_id, NULL, 16); 2417 2418 break; 2419 } 2420 if (skip) { 2421 continue; 2422 } 2423 2424 version = (LPWSTR)cm_get_property(dev_info_data.DevInst, 2425 &qga_DEVPKEY_Device_DriverVersion, &cm_type); 2426 if (version == NULL) { 2427 slog("failed to get driver version"); 2428 continue; 2429 } 2430 device->driver_version = g_utf16_to_utf8(version, -1, NULL, 2431 NULL, NULL); 2432 if (device->driver_version == NULL) { 2433 error_setg(errp, "conversion to utf8 failed (driver version)"); 2434 return NULL; 2435 } 2436 2437 date = (LPFILETIME)cm_get_property(dev_info_data.DevInst, 2438 &qga_DEVPKEY_Device_DriverDate, &cm_type); 2439 if (date == NULL) { 2440 slog("failed to get driver date"); 2441 continue; 2442 } 2443 device->driver_date = filetime_to_ns(date); 2444 device->has_driver_date = true; 2445 2446 slog("driver: %s\ndriver version: %" PRId64 ",%s\n", 2447 device->driver_name, device->driver_date, 2448 device->driver_version); 2449 QAPI_LIST_APPEND(tail, g_steal_pointer(&device)); 2450 } 2451 2452 if (dev_info != INVALID_HANDLE_VALUE) { 2453 SetupDiDestroyDeviceInfoList(dev_info); 2454 } 2455 return head; 2456 } 2457 2458 char *qga_get_host_name(Error **errp) 2459 { 2460 wchar_t tmp[MAX_COMPUTERNAME_LENGTH + 1]; 2461 DWORD size = G_N_ELEMENTS(tmp); 2462 2463 if (GetComputerNameW(tmp, &size) == 0) { 2464 error_setg_win32(errp, GetLastError(), "failed close handle"); 2465 return NULL; 2466 } 2467 2468 return g_utf16_to_utf8(tmp, size, NULL, NULL, NULL); 2469 } 2470 2471 2472 static VOID CALLBACK load_avg_callback(PVOID hCounter, BOOLEAN timedOut) 2473 { 2474 PDH_FMT_COUNTERVALUE displayValue; 2475 double currentLoad; 2476 PDH_STATUS err; 2477 2478 err = PdhGetFormattedCounterValue( 2479 (PDH_HCOUNTER)hCounter, PDH_FMT_DOUBLE, 0, &displayValue); 2480 /* Skip updating the load if we can't get the value successfully */ 2481 if (err != ERROR_SUCCESS) { 2482 slog("PdhGetFormattedCounterValue failed to get load value with 0x%lx", 2483 err); 2484 return; 2485 } 2486 currentLoad = displayValue.doubleValue; 2487 2488 load_avg_1m = load_avg_1m * LOADAVG_FACTOR_1F + currentLoad * \ 2489 (1.0 - LOADAVG_FACTOR_1F); 2490 load_avg_5m = load_avg_5m * LOADAVG_FACTOR_5F + currentLoad * \ 2491 (1.0 - LOADAVG_FACTOR_5F); 2492 load_avg_15m = load_avg_15m * LOADAVG_FACTOR_15F + currentLoad * \ 2493 (1.0 - LOADAVG_FACTOR_15F); 2494 } 2495 2496 static BOOL init_load_avg_counter(Error **errp) 2497 { 2498 CONST WCHAR *szCounterPath = L"\\System\\Processor Queue Length"; 2499 PDH_STATUS status; 2500 BOOL ret; 2501 HQUERY hQuery; 2502 HCOUNTER hCounter; 2503 HANDLE event; 2504 HANDLE waitHandle; 2505 2506 status = PdhOpenQueryW(NULL, 0, &hQuery); 2507 if (status != ERROR_SUCCESS) { 2508 /* 2509 * If the function fails, the return value is a system error code or 2510 * a PDH error code. error_setg_win32 cant translate PDH error code 2511 * properly, so just report it as is. 2512 */ 2513 error_setg_win32(errp, (DWORD)status, 2514 "PdhOpenQueryW failed with 0x%lx", status); 2515 return FALSE; 2516 } 2517 2518 status = PdhAddEnglishCounterW(hQuery, szCounterPath, 0, &hCounter); 2519 if (status != ERROR_SUCCESS) { 2520 error_setg_win32(errp, (DWORD)status, 2521 "PdhAddEnglishCounterW failed with 0x%lx. Performance counters may be disabled.", 2522 status); 2523 PdhCloseQuery(hQuery); 2524 return FALSE; 2525 } 2526 2527 event = CreateEventW(NULL, FALSE, FALSE, L"LoadUpdateEvent"); 2528 if (event == NULL) { 2529 error_setg_win32(errp, GetLastError(), "Create LoadUpdateEvent failed"); 2530 PdhCloseQuery(hQuery); 2531 return FALSE; 2532 } 2533 2534 status = PdhCollectQueryDataEx(hQuery, LOADAVG_SAMPLING_INTERVAL, event); 2535 if (status != ERROR_SUCCESS) { 2536 error_setg_win32(errp, (DWORD)status, 2537 "PdhCollectQueryDataEx failed with 0x%lx", status); 2538 CloseHandle(event); 2539 PdhCloseQuery(hQuery); 2540 return FALSE; 2541 } 2542 2543 ret = RegisterWaitForSingleObject( 2544 &waitHandle, 2545 event, 2546 (WAITORTIMERCALLBACK)load_avg_callback, 2547 (PVOID)hCounter, 2548 INFINITE, 2549 WT_EXECUTEDEFAULT); 2550 2551 if (ret == 0) { 2552 error_setg_win32(errp, GetLastError(), 2553 "RegisterWaitForSingleObject failed"); 2554 CloseHandle(event); 2555 PdhCloseQuery(hQuery); 2556 return FALSE; 2557 } 2558 2559 ga_set_load_avg_wait_handle(ga_state, waitHandle); 2560 ga_set_load_avg_event(ga_state, event); 2561 ga_set_load_avg_pdh_query(ga_state, hQuery); 2562 2563 return TRUE; 2564 } 2565 2566 GuestLoadAverage *qmp_guest_get_load(Error **errp) 2567 { 2568 /* 2569 * The load average logic calls PerformaceCounterAPI, which can result 2570 * in a performance penalty. This avoids running the load average logic 2571 * until a management application actually requests it. The load average 2572 * will not initially be very accurate, but assuming that any interested 2573 * management application will request it repeatedly throughout the lifetime 2574 * of the VM, this seems like a good mitigation. 2575 */ 2576 if (ga_get_load_avg_pdh_query(ga_state) == NULL) { 2577 /* set initial values */ 2578 load_avg_1m = 0; 2579 load_avg_5m = 0; 2580 load_avg_15m = 0; 2581 2582 if (init_load_avg_counter(errp) == false) { 2583 return NULL; 2584 } 2585 } 2586 2587 GuestLoadAverage *ret = NULL; 2588 2589 ret = g_new0(GuestLoadAverage, 1); 2590 ret->load1m = load_avg_1m; 2591 ret->load5m = load_avg_5m; 2592 ret->load15m = load_avg_15m; 2593 return ret; 2594 } 2595