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 14 #include <glib.h> 15 #include <wtypes.h> 16 #include <powrprof.h> 17 #include <stdio.h> 18 #include <string.h> 19 #include <winsock2.h> 20 #include <ws2tcpip.h> 21 #include <iptypes.h> 22 #include <iphlpapi.h> 23 #ifdef CONFIG_QGA_NTDDSCSI 24 #include <winioctl.h> 25 #include <ntddscsi.h> 26 #include <setupapi.h> 27 #include <initguid.h> 28 #endif 29 #include <lm.h> 30 31 #include "qga/guest-agent-core.h" 32 #include "qga/vss-win32.h" 33 #include "qga-qmp-commands.h" 34 #include "qapi/qmp/qerror.h" 35 #include "qemu/queue.h" 36 #include "qemu/host-utils.h" 37 38 #ifndef SHTDN_REASON_FLAG_PLANNED 39 #define SHTDN_REASON_FLAG_PLANNED 0x80000000 40 #endif 41 42 /* multiple of 100 nanoseconds elapsed between windows baseline 43 * (1/1/1601) and Unix Epoch (1/1/1970), accounting for leap years */ 44 #define W32_FT_OFFSET (10000000ULL * 60 * 60 * 24 * \ 45 (365 * (1970 - 1601) + \ 46 (1970 - 1601) / 4 - 3)) 47 48 #define INVALID_SET_FILE_POINTER ((DWORD)-1) 49 50 typedef struct GuestFileHandle { 51 int64_t id; 52 HANDLE fh; 53 QTAILQ_ENTRY(GuestFileHandle) next; 54 } GuestFileHandle; 55 56 static struct { 57 QTAILQ_HEAD(, GuestFileHandle) filehandles; 58 } guest_file_state; 59 60 61 typedef struct OpenFlags { 62 const char *forms; 63 DWORD desired_access; 64 DWORD creation_disposition; 65 } OpenFlags; 66 static OpenFlags guest_file_open_modes[] = { 67 {"r", GENERIC_READ, OPEN_EXISTING}, 68 {"rb", GENERIC_READ, OPEN_EXISTING}, 69 {"w", GENERIC_WRITE, CREATE_ALWAYS}, 70 {"wb", GENERIC_WRITE, CREATE_ALWAYS}, 71 {"a", GENERIC_WRITE, OPEN_ALWAYS }, 72 {"r+", GENERIC_WRITE|GENERIC_READ, OPEN_EXISTING}, 73 {"rb+", GENERIC_WRITE|GENERIC_READ, OPEN_EXISTING}, 74 {"r+b", GENERIC_WRITE|GENERIC_READ, OPEN_EXISTING}, 75 {"w+", GENERIC_WRITE|GENERIC_READ, CREATE_ALWAYS}, 76 {"wb+", GENERIC_WRITE|GENERIC_READ, CREATE_ALWAYS}, 77 {"w+b", GENERIC_WRITE|GENERIC_READ, CREATE_ALWAYS}, 78 {"a+", GENERIC_WRITE|GENERIC_READ, OPEN_ALWAYS }, 79 {"ab+", GENERIC_WRITE|GENERIC_READ, OPEN_ALWAYS }, 80 {"a+b", GENERIC_WRITE|GENERIC_READ, OPEN_ALWAYS } 81 }; 82 83 static OpenFlags *find_open_flag(const char *mode_str) 84 { 85 int mode; 86 Error **errp = NULL; 87 88 for (mode = 0; mode < ARRAY_SIZE(guest_file_open_modes); ++mode) { 89 OpenFlags *flags = guest_file_open_modes + mode; 90 91 if (strcmp(flags->forms, mode_str) == 0) { 92 return flags; 93 } 94 } 95 96 error_setg(errp, "invalid file open mode '%s'", mode_str); 97 return NULL; 98 } 99 100 static int64_t guest_file_handle_add(HANDLE fh, Error **errp) 101 { 102 GuestFileHandle *gfh; 103 int64_t handle; 104 105 handle = ga_get_fd_handle(ga_state, errp); 106 if (handle < 0) { 107 return -1; 108 } 109 gfh = g_malloc0(sizeof(GuestFileHandle)); 110 gfh->id = handle; 111 gfh->fh = fh; 112 QTAILQ_INSERT_TAIL(&guest_file_state.filehandles, gfh, next); 113 114 return handle; 115 } 116 117 static GuestFileHandle *guest_file_handle_find(int64_t id, Error **errp) 118 { 119 GuestFileHandle *gfh; 120 QTAILQ_FOREACH(gfh, &guest_file_state.filehandles, next) { 121 if (gfh->id == id) { 122 return gfh; 123 } 124 } 125 error_setg(errp, "handle '%" PRId64 "' has not been found", id); 126 return NULL; 127 } 128 129 int64_t qmp_guest_file_open(const char *path, bool has_mode, 130 const char *mode, Error **errp) 131 { 132 int64_t fd; 133 HANDLE fh; 134 HANDLE templ_file = NULL; 135 DWORD share_mode = FILE_SHARE_READ; 136 DWORD flags_and_attr = FILE_ATTRIBUTE_NORMAL; 137 LPSECURITY_ATTRIBUTES sa_attr = NULL; 138 OpenFlags *guest_flags; 139 140 if (!has_mode) { 141 mode = "r"; 142 } 143 slog("guest-file-open called, filepath: %s, mode: %s", path, mode); 144 guest_flags = find_open_flag(mode); 145 if (guest_flags == NULL) { 146 error_setg(errp, "invalid file open mode"); 147 return -1; 148 } 149 150 fh = CreateFile(path, guest_flags->desired_access, share_mode, sa_attr, 151 guest_flags->creation_disposition, flags_and_attr, 152 templ_file); 153 if (fh == INVALID_HANDLE_VALUE) { 154 error_setg_win32(errp, GetLastError(), "failed to open file '%s'", 155 path); 156 return -1; 157 } 158 159 fd = guest_file_handle_add(fh, errp); 160 if (fd < 0) { 161 CloseHandle(&fh); 162 error_setg(errp, "failed to add handle to qmp handle table"); 163 return -1; 164 } 165 166 slog("guest-file-open, handle: % " PRId64, fd); 167 return fd; 168 } 169 170 void qmp_guest_file_close(int64_t handle, Error **errp) 171 { 172 bool ret; 173 GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 174 slog("guest-file-close called, handle: %" PRId64, handle); 175 if (gfh == NULL) { 176 return; 177 } 178 ret = CloseHandle(gfh->fh); 179 if (!ret) { 180 error_setg_win32(errp, GetLastError(), "failed close handle"); 181 return; 182 } 183 184 QTAILQ_REMOVE(&guest_file_state.filehandles, gfh, next); 185 g_free(gfh); 186 } 187 188 static void acquire_privilege(const char *name, Error **errp) 189 { 190 HANDLE token = NULL; 191 TOKEN_PRIVILEGES priv; 192 Error *local_err = NULL; 193 194 if (OpenProcessToken(GetCurrentProcess(), 195 TOKEN_ADJUST_PRIVILEGES|TOKEN_QUERY, &token)) 196 { 197 if (!LookupPrivilegeValue(NULL, name, &priv.Privileges[0].Luid)) { 198 error_setg(&local_err, QERR_QGA_COMMAND_FAILED, 199 "no luid for requested privilege"); 200 goto out; 201 } 202 203 priv.PrivilegeCount = 1; 204 priv.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED; 205 206 if (!AdjustTokenPrivileges(token, FALSE, &priv, 0, NULL, 0)) { 207 error_setg(&local_err, QERR_QGA_COMMAND_FAILED, 208 "unable to acquire requested privilege"); 209 goto out; 210 } 211 212 } else { 213 error_setg(&local_err, QERR_QGA_COMMAND_FAILED, 214 "failed to open privilege token"); 215 } 216 217 out: 218 if (token) { 219 CloseHandle(token); 220 } 221 if (local_err) { 222 error_propagate(errp, local_err); 223 } 224 } 225 226 static void execute_async(DWORD WINAPI (*func)(LPVOID), LPVOID opaque, 227 Error **errp) 228 { 229 Error *local_err = NULL; 230 231 HANDLE thread = CreateThread(NULL, 0, func, opaque, 0, NULL); 232 if (!thread) { 233 error_setg(&local_err, QERR_QGA_COMMAND_FAILED, 234 "failed to dispatch asynchronous command"); 235 error_propagate(errp, local_err); 236 } 237 } 238 239 void qmp_guest_shutdown(bool has_mode, const char *mode, Error **errp) 240 { 241 Error *local_err = NULL; 242 UINT shutdown_flag = EWX_FORCE; 243 244 slog("guest-shutdown called, mode: %s", mode); 245 246 if (!has_mode || strcmp(mode, "powerdown") == 0) { 247 shutdown_flag |= EWX_POWEROFF; 248 } else if (strcmp(mode, "halt") == 0) { 249 shutdown_flag |= EWX_SHUTDOWN; 250 } else if (strcmp(mode, "reboot") == 0) { 251 shutdown_flag |= EWX_REBOOT; 252 } else { 253 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "mode", 254 "halt|powerdown|reboot"); 255 return; 256 } 257 258 /* Request a shutdown privilege, but try to shut down the system 259 anyway. */ 260 acquire_privilege(SE_SHUTDOWN_NAME, &local_err); 261 if (local_err) { 262 error_propagate(errp, local_err); 263 return; 264 } 265 266 if (!ExitWindowsEx(shutdown_flag, SHTDN_REASON_FLAG_PLANNED)) { 267 slog("guest-shutdown failed: %lu", GetLastError()); 268 error_setg(errp, QERR_UNDEFINED_ERROR); 269 } 270 } 271 272 GuestFileRead *qmp_guest_file_read(int64_t handle, bool has_count, 273 int64_t count, Error **errp) 274 { 275 GuestFileRead *read_data = NULL; 276 guchar *buf; 277 HANDLE fh; 278 bool is_ok; 279 DWORD read_count; 280 GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 281 282 if (!gfh) { 283 return NULL; 284 } 285 if (!has_count) { 286 count = QGA_READ_COUNT_DEFAULT; 287 } else if (count < 0) { 288 error_setg(errp, "value '%" PRId64 289 "' is invalid for argument count", count); 290 return NULL; 291 } 292 293 fh = gfh->fh; 294 buf = g_malloc0(count+1); 295 is_ok = ReadFile(fh, buf, count, &read_count, NULL); 296 if (!is_ok) { 297 error_setg_win32(errp, GetLastError(), "failed to read file"); 298 slog("guest-file-read failed, handle %" PRId64, handle); 299 } else { 300 buf[read_count] = 0; 301 read_data = g_malloc0(sizeof(GuestFileRead)); 302 read_data->count = (size_t)read_count; 303 read_data->eof = read_count == 0; 304 305 if (read_count != 0) { 306 read_data->buf_b64 = g_base64_encode(buf, read_count); 307 } 308 } 309 g_free(buf); 310 311 return read_data; 312 } 313 314 GuestFileWrite *qmp_guest_file_write(int64_t handle, const char *buf_b64, 315 bool has_count, int64_t count, 316 Error **errp) 317 { 318 GuestFileWrite *write_data = NULL; 319 guchar *buf; 320 gsize buf_len; 321 bool is_ok; 322 DWORD write_count; 323 GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 324 HANDLE fh; 325 326 if (!gfh) { 327 return NULL; 328 } 329 fh = gfh->fh; 330 buf = g_base64_decode(buf_b64, &buf_len); 331 332 if (!has_count) { 333 count = buf_len; 334 } else if (count < 0 || count > buf_len) { 335 error_setg(errp, "value '%" PRId64 336 "' is invalid for argument count", count); 337 goto done; 338 } 339 340 is_ok = WriteFile(fh, buf, count, &write_count, NULL); 341 if (!is_ok) { 342 error_setg_win32(errp, GetLastError(), "failed to write to file"); 343 slog("guest-file-write-failed, handle: %" PRId64, handle); 344 } else { 345 write_data = g_malloc0(sizeof(GuestFileWrite)); 346 write_data->count = (size_t) write_count; 347 } 348 349 done: 350 g_free(buf); 351 return write_data; 352 } 353 354 GuestFileSeek *qmp_guest_file_seek(int64_t handle, int64_t offset, 355 int64_t whence, Error **errp) 356 { 357 GuestFileHandle *gfh; 358 GuestFileSeek *seek_data; 359 HANDLE fh; 360 LARGE_INTEGER new_pos, off_pos; 361 off_pos.QuadPart = offset; 362 BOOL res; 363 gfh = guest_file_handle_find(handle, errp); 364 if (!gfh) { 365 return NULL; 366 } 367 368 fh = gfh->fh; 369 res = SetFilePointerEx(fh, off_pos, &new_pos, whence); 370 if (!res) { 371 error_setg_win32(errp, GetLastError(), "failed to seek file"); 372 return NULL; 373 } 374 seek_data = g_new0(GuestFileSeek, 1); 375 seek_data->position = new_pos.QuadPart; 376 return seek_data; 377 } 378 379 void qmp_guest_file_flush(int64_t handle, Error **errp) 380 { 381 HANDLE fh; 382 GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 383 if (!gfh) { 384 return; 385 } 386 387 fh = gfh->fh; 388 if (!FlushFileBuffers(fh)) { 389 error_setg_win32(errp, GetLastError(), "failed to flush file"); 390 } 391 } 392 393 static void guest_file_init(void) 394 { 395 QTAILQ_INIT(&guest_file_state.filehandles); 396 } 397 398 #ifdef CONFIG_QGA_NTDDSCSI 399 400 static STORAGE_BUS_TYPE win2qemu[] = { 401 [BusTypeUnknown] = GUEST_DISK_BUS_TYPE_UNKNOWN, 402 [BusTypeScsi] = GUEST_DISK_BUS_TYPE_SCSI, 403 [BusTypeAtapi] = GUEST_DISK_BUS_TYPE_IDE, 404 [BusTypeAta] = GUEST_DISK_BUS_TYPE_IDE, 405 [BusType1394] = GUEST_DISK_BUS_TYPE_IEEE1394, 406 [BusTypeSsa] = GUEST_DISK_BUS_TYPE_SSA, 407 [BusTypeFibre] = GUEST_DISK_BUS_TYPE_SSA, 408 [BusTypeUsb] = GUEST_DISK_BUS_TYPE_USB, 409 [BusTypeRAID] = GUEST_DISK_BUS_TYPE_RAID, 410 #if (_WIN32_WINNT >= 0x0600) 411 [BusTypeiScsi] = GUEST_DISK_BUS_TYPE_ISCSI, 412 [BusTypeSas] = GUEST_DISK_BUS_TYPE_SAS, 413 [BusTypeSata] = GUEST_DISK_BUS_TYPE_SATA, 414 [BusTypeSd] = GUEST_DISK_BUS_TYPE_SD, 415 [BusTypeMmc] = GUEST_DISK_BUS_TYPE_MMC, 416 #endif 417 #if (_WIN32_WINNT >= 0x0601) 418 [BusTypeVirtual] = GUEST_DISK_BUS_TYPE_VIRTUAL, 419 [BusTypeFileBackedVirtual] = GUEST_DISK_BUS_TYPE_FILE_BACKED_VIRTUAL, 420 #endif 421 }; 422 423 static GuestDiskBusType find_bus_type(STORAGE_BUS_TYPE bus) 424 { 425 if (bus > ARRAY_SIZE(win2qemu) || (int)bus < 0) { 426 return GUEST_DISK_BUS_TYPE_UNKNOWN; 427 } 428 return win2qemu[(int)bus]; 429 } 430 431 DEFINE_GUID(GUID_DEVINTERFACE_VOLUME, 432 0x53f5630dL, 0xb6bf, 0x11d0, 0x94, 0xf2, 433 0x00, 0xa0, 0xc9, 0x1e, 0xfb, 0x8b); 434 435 static GuestPCIAddress *get_pci_info(char *guid, Error **errp) 436 { 437 HDEVINFO dev_info; 438 SP_DEVINFO_DATA dev_info_data; 439 DWORD size = 0; 440 int i; 441 char dev_name[MAX_PATH]; 442 char *buffer = NULL; 443 GuestPCIAddress *pci = NULL; 444 char *name = g_strdup(&guid[4]); 445 446 if (!QueryDosDevice(name, dev_name, ARRAY_SIZE(dev_name))) { 447 error_setg_win32(errp, GetLastError(), "failed to get dos device name"); 448 goto out; 449 } 450 451 dev_info = SetupDiGetClassDevs(&GUID_DEVINTERFACE_VOLUME, 0, 0, 452 DIGCF_PRESENT | DIGCF_DEVICEINTERFACE); 453 if (dev_info == INVALID_HANDLE_VALUE) { 454 error_setg_win32(errp, GetLastError(), "failed to get devices tree"); 455 goto out; 456 } 457 458 dev_info_data.cbSize = sizeof(SP_DEVINFO_DATA); 459 for (i = 0; SetupDiEnumDeviceInfo(dev_info, i, &dev_info_data); i++) { 460 DWORD addr, bus, slot, func, dev, data, size2; 461 while (!SetupDiGetDeviceRegistryProperty(dev_info, &dev_info_data, 462 SPDRP_PHYSICAL_DEVICE_OBJECT_NAME, 463 &data, (PBYTE)buffer, size, 464 &size2)) { 465 size = MAX(size, size2); 466 if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) { 467 g_free(buffer); 468 /* Double the size to avoid problems on 469 * W2k MBCS systems per KB 888609. 470 * https://support.microsoft.com/en-us/kb/259695 */ 471 buffer = g_malloc(size * 2); 472 } else { 473 error_setg_win32(errp, GetLastError(), 474 "failed to get device name"); 475 goto out; 476 } 477 } 478 479 if (g_strcmp0(buffer, dev_name)) { 480 continue; 481 } 482 483 /* There is no need to allocate buffer in the next functions. The size 484 * is known and ULONG according to 485 * https://support.microsoft.com/en-us/kb/253232 486 * https://msdn.microsoft.com/en-us/library/windows/hardware/ff543095(v=vs.85).aspx 487 */ 488 if (!SetupDiGetDeviceRegistryProperty(dev_info, &dev_info_data, 489 SPDRP_BUSNUMBER, &data, (PBYTE)&bus, size, NULL)) { 490 break; 491 } 492 493 /* The function retrieves the device's address. This value will be 494 * transformed into device function and number */ 495 if (!SetupDiGetDeviceRegistryProperty(dev_info, &dev_info_data, 496 SPDRP_ADDRESS, &data, (PBYTE)&addr, size, NULL)) { 497 break; 498 } 499 500 /* This call returns UINumber of DEVICE_CAPABILITIES structure. 501 * This number is typically a user-perceived slot number. */ 502 if (!SetupDiGetDeviceRegistryProperty(dev_info, &dev_info_data, 503 SPDRP_UI_NUMBER, &data, (PBYTE)&slot, size, NULL)) { 504 break; 505 } 506 507 /* SetupApi gives us the same information as driver with 508 * IoGetDeviceProperty. According to Microsoft 509 * https://support.microsoft.com/en-us/kb/253232 510 * FunctionNumber = (USHORT)((propertyAddress) & 0x0000FFFF); 511 * DeviceNumber = (USHORT)(((propertyAddress) >> 16) & 0x0000FFFF); 512 * SPDRP_ADDRESS is propertyAddress, so we do the same.*/ 513 514 func = addr & 0x0000FFFF; 515 dev = (addr >> 16) & 0x0000FFFF; 516 pci = g_malloc0(sizeof(*pci)); 517 pci->domain = dev; 518 pci->slot = slot; 519 pci->function = func; 520 pci->bus = bus; 521 break; 522 } 523 out: 524 g_free(buffer); 525 g_free(name); 526 return pci; 527 } 528 529 static int get_disk_bus_type(HANDLE vol_h, Error **errp) 530 { 531 STORAGE_PROPERTY_QUERY query; 532 STORAGE_DEVICE_DESCRIPTOR *dev_desc, buf; 533 DWORD received; 534 535 dev_desc = &buf; 536 dev_desc->Size = sizeof(buf); 537 query.PropertyId = StorageDeviceProperty; 538 query.QueryType = PropertyStandardQuery; 539 540 if (!DeviceIoControl(vol_h, IOCTL_STORAGE_QUERY_PROPERTY, &query, 541 sizeof(STORAGE_PROPERTY_QUERY), dev_desc, 542 dev_desc->Size, &received, NULL)) { 543 error_setg_win32(errp, GetLastError(), "failed to get bus type"); 544 return -1; 545 } 546 547 return dev_desc->BusType; 548 } 549 550 /* VSS provider works with volumes, thus there is no difference if 551 * the volume consist of spanned disks. Info about the first disk in the 552 * volume is returned for the spanned disk group (LVM) */ 553 static GuestDiskAddressList *build_guest_disk_info(char *guid, Error **errp) 554 { 555 GuestDiskAddressList *list = NULL; 556 GuestDiskAddress *disk; 557 SCSI_ADDRESS addr, *scsi_ad; 558 DWORD len; 559 int bus; 560 HANDLE vol_h; 561 562 scsi_ad = &addr; 563 char *name = g_strndup(guid, strlen(guid)-1); 564 565 vol_h = CreateFile(name, 0, FILE_SHARE_READ, NULL, OPEN_EXISTING, 566 0, NULL); 567 if (vol_h == INVALID_HANDLE_VALUE) { 568 error_setg_win32(errp, GetLastError(), "failed to open volume"); 569 goto out_free; 570 } 571 572 bus = get_disk_bus_type(vol_h, errp); 573 if (bus < 0) { 574 goto out_close; 575 } 576 577 disk = g_malloc0(sizeof(*disk)); 578 disk->bus_type = find_bus_type(bus); 579 if (bus == BusTypeScsi || bus == BusTypeAta || bus == BusTypeRAID 580 #if (_WIN32_WINNT >= 0x0600) 581 /* This bus type is not supported before Windows Server 2003 SP1 */ 582 || bus == BusTypeSas 583 #endif 584 ) { 585 /* We are able to use the same ioctls for different bus types 586 * according to Microsoft docs 587 * https://technet.microsoft.com/en-us/library/ee851589(v=ws.10).aspx */ 588 if (DeviceIoControl(vol_h, IOCTL_SCSI_GET_ADDRESS, NULL, 0, scsi_ad, 589 sizeof(SCSI_ADDRESS), &len, NULL)) { 590 disk->unit = addr.Lun; 591 disk->target = addr.TargetId; 592 disk->bus = addr.PathId; 593 disk->pci_controller = get_pci_info(name, errp); 594 } 595 /* We do not set error in this case, because we still have enough 596 * information about volume. */ 597 } else { 598 disk->pci_controller = NULL; 599 } 600 601 list = g_malloc0(sizeof(*list)); 602 list->value = disk; 603 list->next = NULL; 604 out_close: 605 CloseHandle(vol_h); 606 out_free: 607 g_free(name); 608 return list; 609 } 610 611 #else 612 613 static GuestDiskAddressList *build_guest_disk_info(char *guid, Error **errp) 614 { 615 return NULL; 616 } 617 618 #endif /* CONFIG_QGA_NTDDSCSI */ 619 620 static GuestFilesystemInfo *build_guest_fsinfo(char *guid, Error **errp) 621 { 622 DWORD info_size; 623 char mnt, *mnt_point; 624 char fs_name[32]; 625 char vol_info[MAX_PATH+1]; 626 size_t len; 627 GuestFilesystemInfo *fs = NULL; 628 629 GetVolumePathNamesForVolumeName(guid, (LPCH)&mnt, 0, &info_size); 630 if (GetLastError() != ERROR_MORE_DATA) { 631 error_setg_win32(errp, GetLastError(), "failed to get volume name"); 632 return NULL; 633 } 634 635 mnt_point = g_malloc(info_size + 1); 636 if (!GetVolumePathNamesForVolumeName(guid, mnt_point, info_size, 637 &info_size)) { 638 error_setg_win32(errp, GetLastError(), "failed to get volume name"); 639 goto free; 640 } 641 642 len = strlen(mnt_point); 643 mnt_point[len] = '\\'; 644 mnt_point[len+1] = 0; 645 if (!GetVolumeInformation(mnt_point, vol_info, sizeof(vol_info), NULL, NULL, 646 NULL, (LPSTR)&fs_name, sizeof(fs_name))) { 647 if (GetLastError() != ERROR_NOT_READY) { 648 error_setg_win32(errp, GetLastError(), "failed to get volume info"); 649 } 650 goto free; 651 } 652 653 fs_name[sizeof(fs_name) - 1] = 0; 654 fs = g_malloc(sizeof(*fs)); 655 fs->name = g_strdup(guid); 656 if (len == 0) { 657 fs->mountpoint = g_strdup("System Reserved"); 658 } else { 659 fs->mountpoint = g_strndup(mnt_point, len); 660 } 661 fs->type = g_strdup(fs_name); 662 fs->disk = build_guest_disk_info(guid, errp);; 663 free: 664 g_free(mnt_point); 665 return fs; 666 } 667 668 GuestFilesystemInfoList *qmp_guest_get_fsinfo(Error **errp) 669 { 670 HANDLE vol_h; 671 GuestFilesystemInfoList *new, *ret = NULL; 672 char guid[256]; 673 674 vol_h = FindFirstVolume(guid, sizeof(guid)); 675 if (vol_h == INVALID_HANDLE_VALUE) { 676 error_setg_win32(errp, GetLastError(), "failed to find any volume"); 677 return NULL; 678 } 679 680 do { 681 GuestFilesystemInfo *info = build_guest_fsinfo(guid, errp); 682 if (info == NULL) { 683 continue; 684 } 685 new = g_malloc(sizeof(*ret)); 686 new->value = info; 687 new->next = ret; 688 ret = new; 689 } while (FindNextVolume(vol_h, guid, sizeof(guid))); 690 691 if (GetLastError() != ERROR_NO_MORE_FILES) { 692 error_setg_win32(errp, GetLastError(), "failed to find next volume"); 693 } 694 695 FindVolumeClose(vol_h); 696 return ret; 697 } 698 699 /* 700 * Return status of freeze/thaw 701 */ 702 GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **errp) 703 { 704 if (!vss_initialized()) { 705 error_setg(errp, QERR_UNSUPPORTED); 706 return 0; 707 } 708 709 if (ga_is_frozen(ga_state)) { 710 return GUEST_FSFREEZE_STATUS_FROZEN; 711 } 712 713 return GUEST_FSFREEZE_STATUS_THAWED; 714 } 715 716 /* 717 * Freeze local file systems using Volume Shadow-copy Service. 718 * The frozen state is limited for up to 10 seconds by VSS. 719 */ 720 int64_t qmp_guest_fsfreeze_freeze(Error **errp) 721 { 722 int i; 723 Error *local_err = NULL; 724 725 if (!vss_initialized()) { 726 error_setg(errp, QERR_UNSUPPORTED); 727 return 0; 728 } 729 730 slog("guest-fsfreeze called"); 731 732 /* cannot risk guest agent blocking itself on a write in this state */ 733 ga_set_frozen(ga_state); 734 735 qga_vss_fsfreeze(&i, &local_err, true); 736 if (local_err) { 737 error_propagate(errp, local_err); 738 goto error; 739 } 740 741 return i; 742 743 error: 744 local_err = NULL; 745 qmp_guest_fsfreeze_thaw(&local_err); 746 if (local_err) { 747 g_debug("cleanup thaw: %s", error_get_pretty(local_err)); 748 error_free(local_err); 749 } 750 return 0; 751 } 752 753 int64_t qmp_guest_fsfreeze_freeze_list(bool has_mountpoints, 754 strList *mountpoints, 755 Error **errp) 756 { 757 error_setg(errp, QERR_UNSUPPORTED); 758 759 return 0; 760 } 761 762 /* 763 * Thaw local file systems using Volume Shadow-copy Service. 764 */ 765 int64_t qmp_guest_fsfreeze_thaw(Error **errp) 766 { 767 int i; 768 769 if (!vss_initialized()) { 770 error_setg(errp, QERR_UNSUPPORTED); 771 return 0; 772 } 773 774 qga_vss_fsfreeze(&i, errp, false); 775 776 ga_unset_frozen(ga_state); 777 return i; 778 } 779 780 static void guest_fsfreeze_cleanup(void) 781 { 782 Error *err = NULL; 783 784 if (!vss_initialized()) { 785 return; 786 } 787 788 if (ga_is_frozen(ga_state) == GUEST_FSFREEZE_STATUS_FROZEN) { 789 qmp_guest_fsfreeze_thaw(&err); 790 if (err) { 791 slog("failed to clean up frozen filesystems: %s", 792 error_get_pretty(err)); 793 error_free(err); 794 } 795 } 796 797 vss_deinit(true); 798 } 799 800 /* 801 * Walk list of mounted file systems in the guest, and discard unused 802 * areas. 803 */ 804 GuestFilesystemTrimResponse * 805 qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp) 806 { 807 error_setg(errp, QERR_UNSUPPORTED); 808 return NULL; 809 } 810 811 typedef enum { 812 GUEST_SUSPEND_MODE_DISK, 813 GUEST_SUSPEND_MODE_RAM 814 } GuestSuspendMode; 815 816 static void check_suspend_mode(GuestSuspendMode mode, Error **errp) 817 { 818 SYSTEM_POWER_CAPABILITIES sys_pwr_caps; 819 Error *local_err = NULL; 820 821 ZeroMemory(&sys_pwr_caps, sizeof(sys_pwr_caps)); 822 if (!GetPwrCapabilities(&sys_pwr_caps)) { 823 error_setg(&local_err, QERR_QGA_COMMAND_FAILED, 824 "failed to determine guest suspend capabilities"); 825 goto out; 826 } 827 828 switch (mode) { 829 case GUEST_SUSPEND_MODE_DISK: 830 if (!sys_pwr_caps.SystemS4) { 831 error_setg(&local_err, QERR_QGA_COMMAND_FAILED, 832 "suspend-to-disk not supported by OS"); 833 } 834 break; 835 case GUEST_SUSPEND_MODE_RAM: 836 if (!sys_pwr_caps.SystemS3) { 837 error_setg(&local_err, QERR_QGA_COMMAND_FAILED, 838 "suspend-to-ram not supported by OS"); 839 } 840 break; 841 default: 842 error_setg(&local_err, QERR_INVALID_PARAMETER_VALUE, "mode", 843 "GuestSuspendMode"); 844 } 845 846 out: 847 if (local_err) { 848 error_propagate(errp, local_err); 849 } 850 } 851 852 static DWORD WINAPI do_suspend(LPVOID opaque) 853 { 854 GuestSuspendMode *mode = opaque; 855 DWORD ret = 0; 856 857 if (!SetSuspendState(*mode == GUEST_SUSPEND_MODE_DISK, TRUE, TRUE)) { 858 slog("failed to suspend guest, %lu", GetLastError()); 859 ret = -1; 860 } 861 g_free(mode); 862 return ret; 863 } 864 865 void qmp_guest_suspend_disk(Error **errp) 866 { 867 Error *local_err = NULL; 868 GuestSuspendMode *mode = g_malloc(sizeof(GuestSuspendMode)); 869 870 *mode = GUEST_SUSPEND_MODE_DISK; 871 check_suspend_mode(*mode, &local_err); 872 acquire_privilege(SE_SHUTDOWN_NAME, &local_err); 873 execute_async(do_suspend, mode, &local_err); 874 875 if (local_err) { 876 error_propagate(errp, local_err); 877 g_free(mode); 878 } 879 } 880 881 void qmp_guest_suspend_ram(Error **errp) 882 { 883 Error *local_err = NULL; 884 GuestSuspendMode *mode = g_malloc(sizeof(GuestSuspendMode)); 885 886 *mode = GUEST_SUSPEND_MODE_RAM; 887 check_suspend_mode(*mode, &local_err); 888 acquire_privilege(SE_SHUTDOWN_NAME, &local_err); 889 execute_async(do_suspend, mode, &local_err); 890 891 if (local_err) { 892 error_propagate(errp, local_err); 893 g_free(mode); 894 } 895 } 896 897 void qmp_guest_suspend_hybrid(Error **errp) 898 { 899 error_setg(errp, QERR_UNSUPPORTED); 900 } 901 902 static IP_ADAPTER_ADDRESSES *guest_get_adapters_addresses(Error **errp) 903 { 904 IP_ADAPTER_ADDRESSES *adptr_addrs = NULL; 905 ULONG adptr_addrs_len = 0; 906 DWORD ret; 907 908 /* Call the first time to get the adptr_addrs_len. */ 909 GetAdaptersAddresses(AF_UNSPEC, GAA_FLAG_INCLUDE_PREFIX, 910 NULL, adptr_addrs, &adptr_addrs_len); 911 912 adptr_addrs = g_malloc(adptr_addrs_len); 913 ret = GetAdaptersAddresses(AF_UNSPEC, GAA_FLAG_INCLUDE_PREFIX, 914 NULL, adptr_addrs, &adptr_addrs_len); 915 if (ret != ERROR_SUCCESS) { 916 error_setg_win32(errp, ret, "failed to get adapters addresses"); 917 g_free(adptr_addrs); 918 adptr_addrs = NULL; 919 } 920 return adptr_addrs; 921 } 922 923 static char *guest_wctomb_dup(WCHAR *wstr) 924 { 925 char *str; 926 size_t i; 927 928 i = wcslen(wstr) + 1; 929 str = g_malloc(i); 930 WideCharToMultiByte(CP_ACP, WC_COMPOSITECHECK, 931 wstr, -1, str, i, NULL, NULL); 932 return str; 933 } 934 935 static char *guest_addr_to_str(IP_ADAPTER_UNICAST_ADDRESS *ip_addr, 936 Error **errp) 937 { 938 char addr_str[INET6_ADDRSTRLEN + INET_ADDRSTRLEN]; 939 DWORD len; 940 int ret; 941 942 if (ip_addr->Address.lpSockaddr->sa_family == AF_INET || 943 ip_addr->Address.lpSockaddr->sa_family == AF_INET6) { 944 len = sizeof(addr_str); 945 ret = WSAAddressToString(ip_addr->Address.lpSockaddr, 946 ip_addr->Address.iSockaddrLength, 947 NULL, 948 addr_str, 949 &len); 950 if (ret != 0) { 951 error_setg_win32(errp, WSAGetLastError(), 952 "failed address presentation form conversion"); 953 return NULL; 954 } 955 return g_strdup(addr_str); 956 } 957 return NULL; 958 } 959 960 #if (_WIN32_WINNT >= 0x0600) 961 static int64_t guest_ip_prefix(IP_ADAPTER_UNICAST_ADDRESS *ip_addr) 962 { 963 /* For Windows Vista/2008 and newer, use the OnLinkPrefixLength 964 * field to obtain the prefix. 965 */ 966 return ip_addr->OnLinkPrefixLength; 967 } 968 #else 969 /* When using the Windows XP and 2003 build environment, do the best we can to 970 * figure out the prefix. 971 */ 972 static IP_ADAPTER_INFO *guest_get_adapters_info(void) 973 { 974 IP_ADAPTER_INFO *adptr_info = NULL; 975 ULONG adptr_info_len = 0; 976 DWORD ret; 977 978 /* Call the first time to get the adptr_info_len. */ 979 GetAdaptersInfo(adptr_info, &adptr_info_len); 980 981 adptr_info = g_malloc(adptr_info_len); 982 ret = GetAdaptersInfo(adptr_info, &adptr_info_len); 983 if (ret != ERROR_SUCCESS) { 984 g_free(adptr_info); 985 adptr_info = NULL; 986 } 987 return adptr_info; 988 } 989 990 static int64_t guest_ip_prefix(IP_ADAPTER_UNICAST_ADDRESS *ip_addr) 991 { 992 int64_t prefix = -1; /* Use for AF_INET6 and unknown/undetermined values. */ 993 IP_ADAPTER_INFO *adptr_info, *info; 994 IP_ADDR_STRING *ip; 995 struct in_addr *p; 996 997 if (ip_addr->Address.lpSockaddr->sa_family != AF_INET) { 998 return prefix; 999 } 1000 adptr_info = guest_get_adapters_info(); 1001 if (adptr_info == NULL) { 1002 return prefix; 1003 } 1004 1005 /* Match up the passed in ip_addr with one found in adaptr_info. 1006 * The matching one in adptr_info will have the netmask. 1007 */ 1008 p = &((struct sockaddr_in *)ip_addr->Address.lpSockaddr)->sin_addr; 1009 for (info = adptr_info; info; info = info->Next) { 1010 for (ip = &info->IpAddressList; ip; ip = ip->Next) { 1011 if (p->S_un.S_addr == inet_addr(ip->IpAddress.String)) { 1012 prefix = ctpop32(inet_addr(ip->IpMask.String)); 1013 goto out; 1014 } 1015 } 1016 } 1017 out: 1018 g_free(adptr_info); 1019 return prefix; 1020 } 1021 #endif 1022 1023 GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp) 1024 { 1025 IP_ADAPTER_ADDRESSES *adptr_addrs, *addr; 1026 IP_ADAPTER_UNICAST_ADDRESS *ip_addr = NULL; 1027 GuestNetworkInterfaceList *head = NULL, *cur_item = NULL; 1028 GuestIpAddressList *head_addr, *cur_addr; 1029 GuestNetworkInterfaceList *info; 1030 GuestIpAddressList *address_item = NULL; 1031 unsigned char *mac_addr; 1032 char *addr_str; 1033 WORD wsa_version; 1034 WSADATA wsa_data; 1035 int ret; 1036 1037 adptr_addrs = guest_get_adapters_addresses(errp); 1038 if (adptr_addrs == NULL) { 1039 return NULL; 1040 } 1041 1042 /* Make WSA APIs available. */ 1043 wsa_version = MAKEWORD(2, 2); 1044 ret = WSAStartup(wsa_version, &wsa_data); 1045 if (ret != 0) { 1046 error_setg_win32(errp, ret, "failed socket startup"); 1047 goto out; 1048 } 1049 1050 for (addr = adptr_addrs; addr; addr = addr->Next) { 1051 info = g_malloc0(sizeof(*info)); 1052 1053 if (cur_item == NULL) { 1054 head = cur_item = info; 1055 } else { 1056 cur_item->next = info; 1057 cur_item = info; 1058 } 1059 1060 info->value = g_malloc0(sizeof(*info->value)); 1061 info->value->name = guest_wctomb_dup(addr->FriendlyName); 1062 1063 if (addr->PhysicalAddressLength != 0) { 1064 mac_addr = addr->PhysicalAddress; 1065 1066 info->value->hardware_address = 1067 g_strdup_printf("%02x:%02x:%02x:%02x:%02x:%02x", 1068 (int) mac_addr[0], (int) mac_addr[1], 1069 (int) mac_addr[2], (int) mac_addr[3], 1070 (int) mac_addr[4], (int) mac_addr[5]); 1071 1072 info->value->has_hardware_address = true; 1073 } 1074 1075 head_addr = NULL; 1076 cur_addr = NULL; 1077 for (ip_addr = addr->FirstUnicastAddress; 1078 ip_addr; 1079 ip_addr = ip_addr->Next) { 1080 addr_str = guest_addr_to_str(ip_addr, errp); 1081 if (addr_str == NULL) { 1082 continue; 1083 } 1084 1085 address_item = g_malloc0(sizeof(*address_item)); 1086 1087 if (!cur_addr) { 1088 head_addr = cur_addr = address_item; 1089 } else { 1090 cur_addr->next = address_item; 1091 cur_addr = address_item; 1092 } 1093 1094 address_item->value = g_malloc0(sizeof(*address_item->value)); 1095 address_item->value->ip_address = addr_str; 1096 address_item->value->prefix = guest_ip_prefix(ip_addr); 1097 if (ip_addr->Address.lpSockaddr->sa_family == AF_INET) { 1098 address_item->value->ip_address_type = 1099 GUEST_IP_ADDRESS_TYPE_IPV4; 1100 } else if (ip_addr->Address.lpSockaddr->sa_family == AF_INET6) { 1101 address_item->value->ip_address_type = 1102 GUEST_IP_ADDRESS_TYPE_IPV6; 1103 } 1104 } 1105 if (head_addr) { 1106 info->value->has_ip_addresses = true; 1107 info->value->ip_addresses = head_addr; 1108 } 1109 } 1110 WSACleanup(); 1111 out: 1112 g_free(adptr_addrs); 1113 return head; 1114 } 1115 1116 int64_t qmp_guest_get_time(Error **errp) 1117 { 1118 SYSTEMTIME ts = {0}; 1119 int64_t time_ns; 1120 FILETIME tf; 1121 1122 GetSystemTime(&ts); 1123 if (ts.wYear < 1601 || ts.wYear > 30827) { 1124 error_setg(errp, "Failed to get time"); 1125 return -1; 1126 } 1127 1128 if (!SystemTimeToFileTime(&ts, &tf)) { 1129 error_setg(errp, "Failed to convert system time: %d", (int)GetLastError()); 1130 return -1; 1131 } 1132 1133 time_ns = ((((int64_t)tf.dwHighDateTime << 32) | tf.dwLowDateTime) 1134 - W32_FT_OFFSET) * 100; 1135 1136 return time_ns; 1137 } 1138 1139 void qmp_guest_set_time(bool has_time, int64_t time_ns, Error **errp) 1140 { 1141 Error *local_err = NULL; 1142 SYSTEMTIME ts; 1143 FILETIME tf; 1144 LONGLONG time; 1145 1146 if (!has_time) { 1147 /* Unfortunately, Windows libraries don't provide an easy way to access 1148 * RTC yet: 1149 * 1150 * https://msdn.microsoft.com/en-us/library/aa908981.aspx 1151 */ 1152 error_setg(errp, "Time argument is required on this platform"); 1153 return; 1154 } 1155 1156 /* Validate time passed by user. */ 1157 if (time_ns < 0 || time_ns / 100 > INT64_MAX - W32_FT_OFFSET) { 1158 error_setg(errp, "Time %" PRId64 "is invalid", time_ns); 1159 return; 1160 } 1161 1162 time = time_ns / 100 + W32_FT_OFFSET; 1163 1164 tf.dwLowDateTime = (DWORD) time; 1165 tf.dwHighDateTime = (DWORD) (time >> 32); 1166 1167 if (!FileTimeToSystemTime(&tf, &ts)) { 1168 error_setg(errp, "Failed to convert system time %d", 1169 (int)GetLastError()); 1170 return; 1171 } 1172 1173 acquire_privilege(SE_SYSTEMTIME_NAME, &local_err); 1174 if (local_err) { 1175 error_propagate(errp, local_err); 1176 return; 1177 } 1178 1179 if (!SetSystemTime(&ts)) { 1180 error_setg(errp, "Failed to set time to guest: %d", (int)GetLastError()); 1181 return; 1182 } 1183 } 1184 1185 GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp) 1186 { 1187 error_setg(errp, QERR_UNSUPPORTED); 1188 return NULL; 1189 } 1190 1191 int64_t qmp_guest_set_vcpus(GuestLogicalProcessorList *vcpus, Error **errp) 1192 { 1193 error_setg(errp, QERR_UNSUPPORTED); 1194 return -1; 1195 } 1196 1197 static gchar * 1198 get_net_error_message(gint error) 1199 { 1200 HMODULE module = NULL; 1201 gchar *retval = NULL; 1202 wchar_t *msg = NULL; 1203 int flags, nchars; 1204 1205 flags = FORMAT_MESSAGE_ALLOCATE_BUFFER 1206 |FORMAT_MESSAGE_IGNORE_INSERTS 1207 |FORMAT_MESSAGE_FROM_SYSTEM; 1208 1209 if (error >= NERR_BASE && error <= MAX_NERR) { 1210 module = LoadLibraryExW(L"netmsg.dll", NULL, LOAD_LIBRARY_AS_DATAFILE); 1211 1212 if (module != NULL) { 1213 flags |= FORMAT_MESSAGE_FROM_HMODULE; 1214 } 1215 } 1216 1217 FormatMessageW(flags, module, error, 0, (LPWSTR)&msg, 0, NULL); 1218 1219 if (msg != NULL) { 1220 nchars = wcslen(msg); 1221 1222 if (nchars > 2 && msg[nchars-1] == '\n' && msg[nchars-2] == '\r') { 1223 msg[nchars-2] = '\0'; 1224 } 1225 1226 retval = g_utf16_to_utf8(msg, -1, NULL, NULL, NULL); 1227 1228 LocalFree(msg); 1229 } 1230 1231 if (module != NULL) { 1232 FreeLibrary(module); 1233 } 1234 1235 return retval; 1236 } 1237 1238 void qmp_guest_set_user_password(const char *username, 1239 const char *password, 1240 bool crypted, 1241 Error **errp) 1242 { 1243 NET_API_STATUS nas; 1244 char *rawpasswddata = NULL; 1245 size_t rawpasswdlen; 1246 wchar_t *user, *wpass; 1247 USER_INFO_1003 pi1003 = { 0, }; 1248 1249 if (crypted) { 1250 error_setg(errp, QERR_UNSUPPORTED); 1251 return; 1252 } 1253 1254 rawpasswddata = (char *)g_base64_decode(password, &rawpasswdlen); 1255 rawpasswddata = g_renew(char, rawpasswddata, rawpasswdlen + 1); 1256 rawpasswddata[rawpasswdlen] = '\0'; 1257 1258 user = g_utf8_to_utf16(username, -1, NULL, NULL, NULL); 1259 wpass = g_utf8_to_utf16(rawpasswddata, -1, NULL, NULL, NULL); 1260 1261 pi1003.usri1003_password = wpass; 1262 nas = NetUserSetInfo(NULL, user, 1263 1003, (LPBYTE)&pi1003, 1264 NULL); 1265 1266 if (nas != NERR_Success) { 1267 gchar *msg = get_net_error_message(nas); 1268 error_setg(errp, "failed to set password: %s", msg); 1269 g_free(msg); 1270 } 1271 1272 g_free(user); 1273 g_free(wpass); 1274 g_free(rawpasswddata); 1275 } 1276 1277 GuestMemoryBlockList *qmp_guest_get_memory_blocks(Error **errp) 1278 { 1279 error_setg(errp, QERR_UNSUPPORTED); 1280 return NULL; 1281 } 1282 1283 GuestMemoryBlockResponseList * 1284 qmp_guest_set_memory_blocks(GuestMemoryBlockList *mem_blks, Error **errp) 1285 { 1286 error_setg(errp, QERR_UNSUPPORTED); 1287 return NULL; 1288 } 1289 1290 GuestMemoryBlockInfo *qmp_guest_get_memory_block_info(Error **errp) 1291 { 1292 error_setg(errp, QERR_UNSUPPORTED); 1293 return NULL; 1294 } 1295 1296 /* add unsupported commands to the blacklist */ 1297 GList *ga_command_blacklist_init(GList *blacklist) 1298 { 1299 const char *list_unsupported[] = { 1300 "guest-suspend-hybrid", 1301 "guest-get-vcpus", "guest-set-vcpus", 1302 "guest-get-memory-blocks", "guest-set-memory-blocks", 1303 "guest-get-memory-block-size", 1304 "guest-fsfreeze-freeze-list", 1305 "guest-fstrim", NULL}; 1306 char **p = (char **)list_unsupported; 1307 1308 while (*p) { 1309 blacklist = g_list_append(blacklist, g_strdup(*p++)); 1310 } 1311 1312 if (!vss_init(true)) { 1313 g_debug("vss_init failed, vss commands are going to be disabled"); 1314 const char *list[] = { 1315 "guest-get-fsinfo", "guest-fsfreeze-status", 1316 "guest-fsfreeze-freeze", "guest-fsfreeze-thaw", NULL}; 1317 p = (char **)list; 1318 1319 while (*p) { 1320 blacklist = g_list_append(blacklist, g_strdup(*p++)); 1321 } 1322 } 1323 1324 return blacklist; 1325 } 1326 1327 /* register init/cleanup routines for stateful command groups */ 1328 void ga_command_state_init(GAState *s, GACommandState *cs) 1329 { 1330 if (!vss_initialized()) { 1331 ga_command_state_add(cs, NULL, guest_fsfreeze_cleanup); 1332 } 1333 ga_command_state_add(cs, guest_file_init, NULL); 1334 } 1335