qga/commands-win32.c

   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 "qemu/osdep.h"
  15 #include <glib.h>
  16 #include <wtypes.h>
  17 #include <powrprof.h>
  18 #include <winsock2.h>
  19 #include <ws2tcpip.h>
  20 #include <iptypes.h>
  21 #include <iphlpapi.h>
  22 #ifdef CONFIG_QGA_NTDDSCSI
  23 #include <winioctl.h>
  24 #include <ntddscsi.h>
  25 #include <setupapi.h>
  26 #include <initguid.h>
  27 #endif
  28 #include <lm.h>
  29
  30 #include "qga/guest-agent-core.h"
  31 #include "qga/vss-win32.h"
  32 #include "qga-qmp-commands.h"
  33 #include "qapi/qmp/qerror.h"
  34 #include "qemu/queue.h"
  35 #include "qemu/host-utils.h"
  36 #include "qemu/base64.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     .filehandles = QTAILQ_HEAD_INITIALIZER(guest_file_state.filehandles),
  60 };
  61
  62 #define FILE_GENERIC_APPEND (FILE_GENERIC_WRITE & ~FILE_WRITE_DATA)
  63
  64 typedef struct OpenFlags {
  65     const char *forms;
  66     DWORD desired_access;
  67     DWORD creation_disposition;
  68 } OpenFlags;
  69 static OpenFlags guest_file_open_modes[] = {
  70     {"r",   GENERIC_READ,                     OPEN_EXISTING},
  71     {"rb",  GENERIC_READ,                     OPEN_EXISTING},
  72     {"w",   GENERIC_WRITE,                    CREATE_ALWAYS},
  73     {"wb",  GENERIC_WRITE,                    CREATE_ALWAYS},
  74     {"a",   FILE_GENERIC_APPEND,              OPEN_ALWAYS  },
  75     {"r+",  GENERIC_WRITE|GENERIC_READ,       OPEN_EXISTING},
  76     {"rb+", GENERIC_WRITE|GENERIC_READ,       OPEN_EXISTING},
  77     {"r+b", GENERIC_WRITE|GENERIC_READ,       OPEN_EXISTING},
  78     {"w+",  GENERIC_WRITE|GENERIC_READ,       CREATE_ALWAYS},
  79     {"wb+", GENERIC_WRITE|GENERIC_READ,       CREATE_ALWAYS},
  80     {"w+b", GENERIC_WRITE|GENERIC_READ,       CREATE_ALWAYS},
  81     {"a+",  FILE_GENERIC_APPEND|GENERIC_READ, OPEN_ALWAYS  },
  82     {"ab+", FILE_GENERIC_APPEND|GENERIC_READ, OPEN_ALWAYS  },
  83     {"a+b", FILE_GENERIC_APPEND|GENERIC_READ, OPEN_ALWAYS  }
  84 };
  85
  86 static OpenFlags *find_open_flag(const char *mode_str)
  87 {
  88     int mode;
  89     Error **errp = NULL;
  90
  91     for (mode = 0; mode < ARRAY_SIZE(guest_file_open_modes); ++mode) {
  92         OpenFlags *flags = guest_file_open_modes + mode;
  93
  94         if (strcmp(flags->forms, mode_str) == 0) {
  95             return flags;
  96         }
  97     }
  98
  99     error_setg(errp, "invalid file open mode '%s'", mode_str);
 100     return NULL;
 101 }
 102
 103 static int64_t guest_file_handle_add(HANDLE fh, Error **errp)
 104 {
 105     GuestFileHandle *gfh;
 106     int64_t handle;
 107
 108     handle = ga_get_fd_handle(ga_state, errp);
 109     if (handle < 0) {
 110         return -1;
 111     }
 112     gfh = g_new0(GuestFileHandle, 1);
 113     gfh->id = handle;
 114     gfh->fh = fh;
 115     QTAILQ_INSERT_TAIL(&guest_file_state.filehandles, gfh, next);
 116
 117     return handle;
 118 }
 119
 120 static GuestFileHandle *guest_file_handle_find(int64_t id, Error **errp)
 121 {
 122     GuestFileHandle *gfh;
 123     QTAILQ_FOREACH(gfh, &guest_file_state.filehandles, next) {
 124         if (gfh->id == id) {
 125             return gfh;
 126         }
 127     }
 128     error_setg(errp, "handle '%" PRId64 "' has not been found", id);
 129     return NULL;
 130 }
 131
 132 static void handle_set_nonblocking(HANDLE fh)
 133 {
 134     DWORD file_type, pipe_state;
 135     file_type = GetFileType(fh);
 136     if (file_type != FILE_TYPE_PIPE) {
 137         return;
 138     }
 139     /* If file_type == FILE_TYPE_PIPE, according to MSDN
 140      * the specified file is socket or named pipe */
 141     if (!GetNamedPipeHandleState(fh, &pipe_state, NULL,
 142                                  NULL, NULL, NULL, 0)) {
 143         return;
 144     }
 145     /* The fd is named pipe fd */
 146     if (pipe_state & PIPE_NOWAIT) {
 147         return;
 148     }
 149
 150     pipe_state |= PIPE_NOWAIT;
 151     SetNamedPipeHandleState(fh, &pipe_state, NULL, NULL);
 152 }
 153
 154 int64_t qmp_guest_file_open(const char *path, bool has_mode,
 155                             const char *mode, Error **errp)
 156 {
 157     int64_t fd;
 158     HANDLE fh;
 159     HANDLE templ_file = NULL;
 160     DWORD share_mode = FILE_SHARE_READ;
 161     DWORD flags_and_attr = FILE_ATTRIBUTE_NORMAL;
 162     LPSECURITY_ATTRIBUTES sa_attr = NULL;
 163     OpenFlags *guest_flags;
 164
 165     if (!has_mode) {
 166         mode = "r";
 167     }
 168     slog("guest-file-open called, filepath: %s, mode: %s", path, mode);
 169     guest_flags = find_open_flag(mode);
 170     if (guest_flags == NULL) {
 171         error_setg(errp, "invalid file open mode");
 172         return -1;
 173     }
 174
 175     fh = CreateFile(path, guest_flags->desired_access, share_mode, sa_attr,
 176                     guest_flags->creation_disposition, flags_and_attr,
 177                     templ_file);
 178     if (fh == INVALID_HANDLE_VALUE) {
 179         error_setg_win32(errp, GetLastError(), "failed to open file '%s'",
 180                          path);
 181         return -1;
 182     }
 183
 184     /* set fd non-blocking to avoid common use cases (like reading from a
 185      * named pipe) from hanging the agent
 186      */
 187     handle_set_nonblocking(fh);
 188
 189     fd = guest_file_handle_add(fh, errp);
 190     if (fd < 0) {
 191         CloseHandle(fh);
 192         error_setg(errp, "failed to add handle to qmp handle table");
 193         return -1;
 194     }
 195
 196     slog("guest-file-open, handle: % " PRId64, fd);
 197     return fd;
 198 }
 199
 200 void qmp_guest_file_close(int64_t handle, Error **errp)
 201 {
 202     bool ret;
 203     GuestFileHandle *gfh = guest_file_handle_find(handle, errp);
 204     slog("guest-file-close called, handle: %" PRId64, handle);
 205     if (gfh == NULL) {
 206         return;
 207     }
 208     ret = CloseHandle(gfh->fh);
 209     if (!ret) {
 210         error_setg_win32(errp, GetLastError(), "failed close handle");
 211         return;
 212     }
 213
 214     QTAILQ_REMOVE(&guest_file_state.filehandles, gfh, next);
 215     g_free(gfh);
 216 }
 217
 218 static void acquire_privilege(const char *name, Error **errp)
 219 {
 220     HANDLE token = NULL;
 221     TOKEN_PRIVILEGES priv;
 222     Error *local_err = NULL;
 223
 224     if (OpenProcessToken(GetCurrentProcess(),
 225         TOKEN_ADJUST_PRIVILEGES|TOKEN_QUERY, &token))
 226     {
 227         if (!LookupPrivilegeValue(NULL, name, &priv.Privileges[0].Luid)) {
 228             error_setg(&local_err, QERR_QGA_COMMAND_FAILED,
 229                        "no luid for requested privilege");
 230             goto out;
 231         }
 232
 233         priv.PrivilegeCount = 1;
 234         priv.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
 235
 236         if (!AdjustTokenPrivileges(token, FALSE, &priv, 0, NULL, 0)) {
 237             error_setg(&local_err, QERR_QGA_COMMAND_FAILED,
 238                        "unable to acquire requested privilege");
 239             goto out;
 240         }
 241
 242     } else {
 243         error_setg(&local_err, QERR_QGA_COMMAND_FAILED,
 244                    "failed to open privilege token");
 245     }
 246
 247 out:
 248     if (token) {
 249         CloseHandle(token);
 250     }
 251     if (local_err) {
 252         error_propagate(errp, local_err);
 253     }
 254 }
 255
 256 static void execute_async(DWORD WINAPI (*func)(LPVOID), LPVOID opaque,
 257                           Error **errp)
 258 {
 259     Error *local_err = NULL;
 260
 261     HANDLE thread = CreateThread(NULL, 0, func, opaque, 0, NULL);
 262     if (!thread) {
 263         error_setg(&local_err, QERR_QGA_COMMAND_FAILED,
 264                    "failed to dispatch asynchronous command");
 265         error_propagate(errp, local_err);
 266     }
 267 }
 268
 269 void qmp_guest_shutdown(bool has_mode, const char *mode, Error **errp)
 270 {
 271     Error *local_err = NULL;
 272     UINT shutdown_flag = EWX_FORCE;
 273
 274     slog("guest-shutdown called, mode: %s", mode);
 275
 276     if (!has_mode || strcmp(mode, "powerdown") == 0) {
 277         shutdown_flag |= EWX_POWEROFF;
 278     } else if (strcmp(mode, "halt") == 0) {
 279         shutdown_flag |= EWX_SHUTDOWN;
 280     } else if (strcmp(mode, "reboot") == 0) {
 281         shutdown_flag |= EWX_REBOOT;
 282     } else {
 283         error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "mode",
 284                    "halt|powerdown|reboot");
 285         return;
 286     }
 287
 288     /* Request a shutdown privilege, but try to shut down the system
 289        anyway. */
 290     acquire_privilege(SE_SHUTDOWN_NAME, &local_err);
 291     if (local_err) {
 292         error_propagate(errp, local_err);
 293         return;
 294     }
 295
 296     if (!ExitWindowsEx(shutdown_flag, SHTDN_REASON_FLAG_PLANNED)) {
 297         slog("guest-shutdown failed: %lu", GetLastError());
 298         error_setg(errp, QERR_UNDEFINED_ERROR);
 299     }
 300 }
 301
 302 GuestFileRead *qmp_guest_file_read(int64_t handle, bool has_count,
 303                                    int64_t count, Error **errp)
 304 {
 305     GuestFileRead *read_data = NULL;
 306     guchar *buf;
 307     HANDLE fh;
 308     bool is_ok;
 309     DWORD read_count;
 310     GuestFileHandle *gfh = guest_file_handle_find(handle, errp);
 311
 312     if (!gfh) {
 313         return NULL;
 314     }
 315     if (!has_count) {
 316         count = QGA_READ_COUNT_DEFAULT;
 317     } else if (count < 0) {
 318         error_setg(errp, "value '%" PRId64
 319                    "' is invalid for argument count", count);
 320         return NULL;
 321     }
 322
 323     fh = gfh->fh;
 324     buf = g_malloc0(count+1);
 325     is_ok = ReadFile(fh, buf, count, &read_count, NULL);
 326     if (!is_ok) {
 327         error_setg_win32(errp, GetLastError(), "failed to read file");
 328         slog("guest-file-read failed, handle %" PRId64, handle);
 329     } else {
 330         buf[read_count] = 0;
 331         read_data = g_new0(GuestFileRead, 1);
 332         read_data->count = (size_t)read_count;
 333         read_data->eof = read_count == 0;
 334
 335         if (read_count != 0) {
 336             read_data->buf_b64 = g_base64_encode(buf, read_count);
 337         }
 338     }
 339     g_free(buf);
 340
 341     return read_data;
 342 }
 343
 344 GuestFileWrite *qmp_guest_file_write(int64_t handle, const char *buf_b64,
 345                                      bool has_count, int64_t count,
 346                                      Error **errp)
 347 {
 348     GuestFileWrite *write_data = NULL;
 349     guchar *buf;
 350     gsize buf_len;
 351     bool is_ok;
 352     DWORD write_count;
 353     GuestFileHandle *gfh = guest_file_handle_find(handle, errp);
 354     HANDLE fh;
 355
 356     if (!gfh) {
 357         return NULL;
 358     }
 359     fh = gfh->fh;
 360     buf = qbase64_decode(buf_b64, -1, &buf_len, errp);
 361     if (!buf) {
 362         return NULL;
 363     }
 364
 365     if (!has_count) {
 366         count = buf_len;
 367     } else if (count < 0 || count > buf_len) {
 368         error_setg(errp, "value '%" PRId64
 369                    "' is invalid for argument count", count);
 370         goto done;
 371     }
 372
 373     is_ok = WriteFile(fh, buf, count, &write_count, NULL);
 374     if (!is_ok) {
 375         error_setg_win32(errp, GetLastError(), "failed to write to file");
 376         slog("guest-file-write-failed, handle: %" PRId64, handle);
 377     } else {
 378         write_data = g_new0(GuestFileWrite, 1);
 379         write_data->count = (size_t) write_count;
 380     }
 381
 382 done:
 383     g_free(buf);
 384     return write_data;
 385 }
 386
 387 GuestFileSeek *qmp_guest_file_seek(int64_t handle, int64_t offset,
 388                                    GuestFileWhence *whence_code,
 389                                    Error **errp)
 390 {
 391     GuestFileHandle *gfh;
 392     GuestFileSeek *seek_data;
 393     HANDLE fh;
 394     LARGE_INTEGER new_pos, off_pos;
 395     off_pos.QuadPart = offset;
 396     BOOL res;
 397     int whence;
 398     Error *err = NULL;
 399
 400     gfh = guest_file_handle_find(handle, errp);
 401     if (!gfh) {
 402         return NULL;
 403     }
 404
 405     /* We stupidly exposed 'whence':'int' in our qapi */
 406     whence = ga_parse_whence(whence_code, &err);
 407     if (err) {
 408         error_propagate(errp, err);
 409         return NULL;
 410     }
 411
 412     fh = gfh->fh;
 413     res = SetFilePointerEx(fh, off_pos, &new_pos, whence);
 414     if (!res) {
 415         error_setg_win32(errp, GetLastError(), "failed to seek file");
 416         return NULL;
 417     }
 418     seek_data = g_new0(GuestFileSeek, 1);
 419     seek_data->position = new_pos.QuadPart;
 420     return seek_data;
 421 }
 422
 423 void qmp_guest_file_flush(int64_t handle, Error **errp)
 424 {
 425     HANDLE fh;
 426     GuestFileHandle *gfh = guest_file_handle_find(handle, errp);
 427     if (!gfh) {
 428         return;
 429     }
 430
 431     fh = gfh->fh;
 432     if (!FlushFileBuffers(fh)) {
 433         error_setg_win32(errp, GetLastError(), "failed to flush file");
 434     }
 435 }
 436
 437 #ifdef CONFIG_QGA_NTDDSCSI
 438
 439 static STORAGE_BUS_TYPE win2qemu[] = {
 440     [BusTypeUnknown] = GUEST_DISK_BUS_TYPE_UNKNOWN,
 441     [BusTypeScsi] = GUEST_DISK_BUS_TYPE_SCSI,
 442     [BusTypeAtapi] = GUEST_DISK_BUS_TYPE_IDE,
 443     [BusTypeAta] = GUEST_DISK_BUS_TYPE_IDE,
 444     [BusType1394] = GUEST_DISK_BUS_TYPE_IEEE1394,
 445     [BusTypeSsa] = GUEST_DISK_BUS_TYPE_SSA,
 446     [BusTypeFibre] = GUEST_DISK_BUS_TYPE_SSA,
 447     [BusTypeUsb] = GUEST_DISK_BUS_TYPE_USB,
 448     [BusTypeRAID] = GUEST_DISK_BUS_TYPE_RAID,
 449 #if (_WIN32_WINNT >= 0x0600)
 450     [BusTypeiScsi] = GUEST_DISK_BUS_TYPE_ISCSI,
 451     [BusTypeSas] = GUEST_DISK_BUS_TYPE_SAS,
 452     [BusTypeSata] = GUEST_DISK_BUS_TYPE_SATA,
 453     [BusTypeSd] =  GUEST_DISK_BUS_TYPE_SD,
 454     [BusTypeMmc] = GUEST_DISK_BUS_TYPE_MMC,
 455 #endif
 456 #if (_WIN32_WINNT >= 0x0601)
 457     [BusTypeVirtual] = GUEST_DISK_BUS_TYPE_VIRTUAL,
 458     [BusTypeFileBackedVirtual] = GUEST_DISK_BUS_TYPE_FILE_BACKED_VIRTUAL,
 459 #endif
 460 };
 461
 462 static GuestDiskBusType find_bus_type(STORAGE_BUS_TYPE bus)
 463 {
 464     if (bus > ARRAY_SIZE(win2qemu) || (int)bus < 0) {
 465         return GUEST_DISK_BUS_TYPE_UNKNOWN;
 466     }
 467     return win2qemu[(int)bus];
 468 }
 469
 470 DEFINE_GUID(GUID_DEVINTERFACE_VOLUME,
 471         0x53f5630dL, 0xb6bf, 0x11d0, 0x94, 0xf2,
 472         0x00, 0xa0, 0xc9, 0x1e, 0xfb, 0x8b);
 473
 474 static GuestPCIAddress *get_pci_info(char *guid, Error **errp)
 475 {
 476     HDEVINFO dev_info;
 477     SP_DEVINFO_DATA dev_info_data;
 478     DWORD size = 0;
 479     int i;
 480     char dev_name[MAX_PATH];
 481     char *buffer = NULL;
 482     GuestPCIAddress *pci = NULL;
 483     char *name = g_strdup(&guid[4]);
 484
 485     if (!QueryDosDevice(name, dev_name, ARRAY_SIZE(dev_name))) {
 486         error_setg_win32(errp, GetLastError(), "failed to get dos device name");
 487         goto out;
 488     }
 489
 490     dev_info = SetupDiGetClassDevs(&GUID_DEVINTERFACE_VOLUME, 0, 0,
 491                                    DIGCF_PRESENT | DIGCF_DEVICEINTERFACE);
 492     if (dev_info == INVALID_HANDLE_VALUE) {
 493         error_setg_win32(errp, GetLastError(), "failed to get devices tree");
 494         goto out;
 495     }
 496
 497     dev_info_data.cbSize = sizeof(SP_DEVINFO_DATA);
 498     for (i = 0; SetupDiEnumDeviceInfo(dev_info, i, &dev_info_data); i++) {
 499         DWORD addr, bus, slot, func, dev, data, size2;
 500         while (!SetupDiGetDeviceRegistryProperty(dev_info, &dev_info_data,
 501                                             SPDRP_PHYSICAL_DEVICE_OBJECT_NAME,
 502                                             &data, (PBYTE)buffer, size,
 503                                             &size2)) {
 504             size = MAX(size, size2);
 505             if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) {
 506                 g_free(buffer);
 507                 /* Double the size to avoid problems on
 508                  * W2k MBCS systems per KB 888609.
 509                  * https://support.microsoft.com/en-us/kb/259695 */
 510                 buffer = g_malloc(size * 2);
 511             } else {
 512                 error_setg_win32(errp, GetLastError(),
 513                         "failed to get device name");
 514                 goto out;
 515             }
 516         }
 517
 518         if (g_strcmp0(buffer, dev_name)) {
 519             continue;
 520         }
 521
 522         /* There is no need to allocate buffer in the next functions. The size
 523          * is known and ULONG according to
 524          * https://support.microsoft.com/en-us/kb/253232
 525          * https://msdn.microsoft.com/en-us/library/windows/hardware/ff543095(v=vs.85).aspx
 526          */
 527         if (!SetupDiGetDeviceRegistryProperty(dev_info, &dev_info_data,
 528                    SPDRP_BUSNUMBER, &data, (PBYTE)&bus, size, NULL)) {
 529             break;
 530         }
 531
 532         /* The function retrieves the device's address. This value will be
 533          * transformed into device function and number */
 534         if (!SetupDiGetDeviceRegistryProperty(dev_info, &dev_info_data,
 535                    SPDRP_ADDRESS, &data, (PBYTE)&addr, size, NULL)) {
 536             break;
 537         }
 538
 539         /* This call returns UINumber of DEVICE_CAPABILITIES structure.
 540          * This number is typically a user-perceived slot number. */
 541         if (!SetupDiGetDeviceRegistryProperty(dev_info, &dev_info_data,
 542                    SPDRP_UI_NUMBER, &data, (PBYTE)&slot, size, NULL)) {
 543             break;
 544         }
 545
 546         /* SetupApi gives us the same information as driver with
 547          * IoGetDeviceProperty. According to Microsoft
 548          * https://support.microsoft.com/en-us/kb/253232
 549          * FunctionNumber = (USHORT)((propertyAddress) & 0x0000FFFF);
 550          * DeviceNumber = (USHORT)(((propertyAddress) >> 16) & 0x0000FFFF);
 551          * SPDRP_ADDRESS is propertyAddress, so we do the same.*/
 552
 553         func = addr & 0x0000FFFF;
 554         dev = (addr >> 16) & 0x0000FFFF;
 555         pci = g_malloc0(sizeof(*pci));
 556         pci->domain = dev;
 557         pci->slot = slot;
 558         pci->function = func;
 559         pci->bus = bus;
 560         break;
 561     }
 562 out:
 563     g_free(buffer);
 564     g_free(name);
 565     return pci;
 566 }
 567
 568 static int get_disk_bus_type(HANDLE vol_h, Error **errp)
 569 {
 570     STORAGE_PROPERTY_QUERY query;
 571     STORAGE_DEVICE_DESCRIPTOR *dev_desc, buf;
 572     DWORD received;
 573
 574     dev_desc = &buf;
 575     dev_desc->Size = sizeof(buf);
 576     query.PropertyId = StorageDeviceProperty;
 577     query.QueryType = PropertyStandardQuery;
 578
 579     if (!DeviceIoControl(vol_h, IOCTL_STORAGE_QUERY_PROPERTY, &query,
 580                          sizeof(STORAGE_PROPERTY_QUERY), dev_desc,
 581                          dev_desc->Size, &received, NULL)) {
 582         error_setg_win32(errp, GetLastError(), "failed to get bus type");
 583         return -1;
 584     }
 585
 586     return dev_desc->BusType;
 587 }
 588
 589 /* VSS provider works with volumes, thus there is no difference if
 590  * the volume consist of spanned disks. Info about the first disk in the
 591  * volume is returned for the spanned disk group (LVM) */
 592 static GuestDiskAddressList *build_guest_disk_info(char *guid, Error **errp)
 593 {
 594     GuestDiskAddressList *list = NULL;
 595     GuestDiskAddress *disk;
 596     SCSI_ADDRESS addr, *scsi_ad;
 597     DWORD len;
 598     int bus;
 599     HANDLE vol_h;
 600
 601     scsi_ad = &addr;
 602     char *name = g_strndup(guid, strlen(guid)-1);
 603
 604     vol_h = CreateFile(name, 0, FILE_SHARE_READ, NULL, OPEN_EXISTING,
 605                        0, NULL);
 606     if (vol_h == INVALID_HANDLE_VALUE) {
 607         error_setg_win32(errp, GetLastError(), "failed to open volume");
 608         goto out_free;
 609     }
 610
 611     bus = get_disk_bus_type(vol_h, errp);
 612     if (bus < 0) {
 613         goto out_close;
 614     }
 615
 616     disk = g_malloc0(sizeof(*disk));
 617     disk->bus_type = find_bus_type(bus);
 618     if (bus == BusTypeScsi || bus == BusTypeAta || bus == BusTypeRAID
 619 #if (_WIN32_WINNT >= 0x0600)
 620             /* This bus type is not supported before Windows Server 2003 SP1 */
 621             || bus == BusTypeSas
 622 #endif
 623         ) {
 624         /* We are able to use the same ioctls for different bus types
 625          * according to Microsoft docs
 626          * https://technet.microsoft.com/en-us/library/ee851589(v=ws.10).aspx */
 627         if (DeviceIoControl(vol_h, IOCTL_SCSI_GET_ADDRESS, NULL, 0, scsi_ad,
 628                             sizeof(SCSI_ADDRESS), &len, NULL)) {
 629             disk->unit = addr.Lun;
 630             disk->target = addr.TargetId;
 631             disk->bus = addr.PathId;
 632             disk->pci_controller = get_pci_info(name, errp);
 633         }
 634         /* We do not set error in this case, because we still have enough
 635          * information about volume. */
 636     } else {
 637          disk->pci_controller = NULL;
 638     }
 639
 640     list = g_malloc0(sizeof(*list));
 641     list->value = disk;
 642     list->next = NULL;
 643 out_close:
 644     CloseHandle(vol_h);
 645 out_free:
 646     g_free(name);
 647     return list;
 648 }
 649
 650 #else
 651
 652 static GuestDiskAddressList *build_guest_disk_info(char *guid, Error **errp)
 653 {
 654     return NULL;
 655 }
 656
 657 #endif /* CONFIG_QGA_NTDDSCSI */
 658
 659 static GuestFilesystemInfo *build_guest_fsinfo(char *guid, Error **errp)
 660 {
 661     DWORD info_size;
 662     char mnt, *mnt_point;
 663     char fs_name[32];
 664     char vol_info[MAX_PATH+1];
 665     size_t len;
 666     GuestFilesystemInfo *fs = NULL;
 667
 668     GetVolumePathNamesForVolumeName(guid, (LPCH)&mnt, 0, &info_size);
 669     if (GetLastError() != ERROR_MORE_DATA) {
 670         error_setg_win32(errp, GetLastError(), "failed to get volume name");
 671         return NULL;
 672     }
 673
 674     mnt_point = g_malloc(info_size + 1);
 675     if (!GetVolumePathNamesForVolumeName(guid, mnt_point, info_size,
 676                                          &info_size)) {
 677         error_setg_win32(errp, GetLastError(), "failed to get volume name");
 678         goto free;
 679     }
 680
 681     len = strlen(mnt_point);
 682     mnt_point[len] = '\\';
 683     mnt_point[len+1] = 0;
 684     if (!GetVolumeInformation(mnt_point, vol_info, sizeof(vol_info), NULL, NULL,
 685                               NULL, (LPSTR)&fs_name, sizeof(fs_name))) {
 686         if (GetLastError() != ERROR_NOT_READY) {
 687             error_setg_win32(errp, GetLastError(), "failed to get volume info");
 688         }
 689         goto free;
 690     }
 691
 692     fs_name[sizeof(fs_name) - 1] = 0;
 693     fs = g_malloc(sizeof(*fs));
 694     fs->name = g_strdup(guid);
 695     if (len == 0) {
 696         fs->mountpoint = g_strdup("System Reserved");
 697     } else {
 698         fs->mountpoint = g_strndup(mnt_point, len);
 699     }
 700     fs->type = g_strdup(fs_name);
 701     fs->disk = build_guest_disk_info(guid, errp);
 702 free:
 703     g_free(mnt_point);
 704     return fs;
 705 }
 706
 707 GuestFilesystemInfoList *qmp_guest_get_fsinfo(Error **errp)
 708 {
 709     HANDLE vol_h;
 710     GuestFilesystemInfoList *new, *ret = NULL;
 711     char guid[256];
 712
 713     vol_h = FindFirstVolume(guid, sizeof(guid));
 714     if (vol_h == INVALID_HANDLE_VALUE) {
 715         error_setg_win32(errp, GetLastError(), "failed to find any volume");
 716         return NULL;
 717     }
 718
 719     do {
 720         GuestFilesystemInfo *info = build_guest_fsinfo(guid, errp);
 721         if (info == NULL) {
 722             continue;
 723         }
 724         new = g_malloc(sizeof(*ret));
 725         new->value = info;
 726         new->next = ret;
 727         ret = new;
 728     } while (FindNextVolume(vol_h, guid, sizeof(guid)));
 729
 730     if (GetLastError() != ERROR_NO_MORE_FILES) {
 731         error_setg_win32(errp, GetLastError(), "failed to find next volume");
 732     }
 733
 734     FindVolumeClose(vol_h);
 735     return ret;
 736 }
 737
 738 /*
 739  * Return status of freeze/thaw
 740  */
 741 GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **errp)
 742 {
 743     if (!vss_initialized()) {
 744         error_setg(errp, QERR_UNSUPPORTED);
 745         return 0;
 746     }
 747
 748     if (ga_is_frozen(ga_state)) {
 749         return GUEST_FSFREEZE_STATUS_FROZEN;
 750     }
 751
 752     return GUEST_FSFREEZE_STATUS_THAWED;
 753 }
 754
 755 /*
 756  * Freeze local file systems using Volume Shadow-copy Service.
 757  * The frozen state is limited for up to 10 seconds by VSS.
 758  */
 759 int64_t qmp_guest_fsfreeze_freeze(Error **errp)
 760 {
 761     int i;
 762     Error *local_err = NULL;
 763
 764     if (!vss_initialized()) {
 765         error_setg(errp, QERR_UNSUPPORTED);
 766         return 0;
 767     }
 768
 769     slog("guest-fsfreeze called");
 770
 771     /* cannot risk guest agent blocking itself on a write in this state */
 772     ga_set_frozen(ga_state);
 773
 774     qga_vss_fsfreeze(&i, &local_err, true);
 775     if (local_err) {
 776         error_propagate(errp, local_err);
 777         goto error;
 778     }
 779
 780     return i;
 781
 782 error:
 783     local_err = NULL;
 784     qmp_guest_fsfreeze_thaw(&local_err);
 785     if (local_err) {
 786         g_debug("cleanup thaw: %s", error_get_pretty(local_err));
 787         error_free(local_err);
 788     }
 789     return 0;
 790 }
 791
 792 int64_t qmp_guest_fsfreeze_freeze_list(bool has_mountpoints,
 793                                        strList *mountpoints,
 794                                        Error **errp)
 795 {
 796     error_setg(errp, QERR_UNSUPPORTED);
 797
 798     return 0;
 799 }
 800
 801 /*
 802  * Thaw local file systems using Volume Shadow-copy Service.
 803  */
 804 int64_t qmp_guest_fsfreeze_thaw(Error **errp)
 805 {
 806     int i;
 807
 808     if (!vss_initialized()) {
 809         error_setg(errp, QERR_UNSUPPORTED);
 810         return 0;
 811     }
 812
 813     qga_vss_fsfreeze(&i, errp, false);
 814
 815     ga_unset_frozen(ga_state);
 816     return i;
 817 }
 818
 819 static void guest_fsfreeze_cleanup(void)
 820 {
 821     Error *err = NULL;
 822
 823     if (!vss_initialized()) {
 824         return;
 825     }
 826
 827     if (ga_is_frozen(ga_state) == GUEST_FSFREEZE_STATUS_FROZEN) {
 828         qmp_guest_fsfreeze_thaw(&err);
 829         if (err) {
 830             slog("failed to clean up frozen filesystems: %s",
 831                  error_get_pretty(err));
 832             error_free(err);
 833         }
 834     }
 835
 836     vss_deinit(true);
 837 }
 838
 839 /*
 840  * Walk list of mounted file systems in the guest, and discard unused
 841  * areas.
 842  */
 843 GuestFilesystemTrimResponse *
 844 qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp)
 845 {
 846     error_setg(errp, QERR_UNSUPPORTED);
 847     return NULL;
 848 }
 849
 850 typedef enum {
 851     GUEST_SUSPEND_MODE_DISK,
 852     GUEST_SUSPEND_MODE_RAM
 853 } GuestSuspendMode;
 854
 855 static void check_suspend_mode(GuestSuspendMode mode, Error **errp)
 856 {
 857     SYSTEM_POWER_CAPABILITIES sys_pwr_caps;
 858     Error *local_err = NULL;
 859
 860     ZeroMemory(&sys_pwr_caps, sizeof(sys_pwr_caps));
 861     if (!GetPwrCapabilities(&sys_pwr_caps)) {
 862         error_setg(&local_err, QERR_QGA_COMMAND_FAILED,
 863                    "failed to determine guest suspend capabilities");
 864         goto out;
 865     }
 866
 867     switch (mode) {
 868     case GUEST_SUSPEND_MODE_DISK:
 869         if (!sys_pwr_caps.SystemS4) {
 870             error_setg(&local_err, QERR_QGA_COMMAND_FAILED,
 871                        "suspend-to-disk not supported by OS");
 872         }
 873         break;
 874     case GUEST_SUSPEND_MODE_RAM:
 875         if (!sys_pwr_caps.SystemS3) {
 876             error_setg(&local_err, QERR_QGA_COMMAND_FAILED,
 877                        "suspend-to-ram not supported by OS");
 878         }
 879         break;
 880     default:
 881         error_setg(&local_err, QERR_INVALID_PARAMETER_VALUE, "mode",
 882                    "GuestSuspendMode");
 883     }
 884
 885 out:
 886     if (local_err) {
 887         error_propagate(errp, local_err);
 888     }
 889 }
 890
 891 static DWORD WINAPI do_suspend(LPVOID opaque)
 892 {
 893     GuestSuspendMode *mode = opaque;
 894     DWORD ret = 0;
 895
 896     if (!SetSuspendState(*mode == GUEST_SUSPEND_MODE_DISK, TRUE, TRUE)) {
 897         slog("failed to suspend guest, %lu", GetLastError());
 898         ret = -1;
 899     }
 900     g_free(mode);
 901     return ret;
 902 }
 903
 904 void qmp_guest_suspend_disk(Error **errp)
 905 {
 906     Error *local_err = NULL;
 907     GuestSuspendMode *mode = g_new(GuestSuspendMode, 1);
 908
 909     *mode = GUEST_SUSPEND_MODE_DISK;
 910     check_suspend_mode(*mode, &local_err);
 911     acquire_privilege(SE_SHUTDOWN_NAME, &local_err);
 912     execute_async(do_suspend, mode, &local_err);
 913
 914     if (local_err) {
 915         error_propagate(errp, local_err);
 916         g_free(mode);
 917     }
 918 }
 919
 920 void qmp_guest_suspend_ram(Error **errp)
 921 {
 922     Error *local_err = NULL;
 923     GuestSuspendMode *mode = g_new(GuestSuspendMode, 1);
 924
 925     *mode = GUEST_SUSPEND_MODE_RAM;
 926     check_suspend_mode(*mode, &local_err);
 927     acquire_privilege(SE_SHUTDOWN_NAME, &local_err);
 928     execute_async(do_suspend, mode, &local_err);
 929
 930     if (local_err) {
 931         error_propagate(errp, local_err);
 932         g_free(mode);
 933     }
 934 }
 935
 936 void qmp_guest_suspend_hybrid(Error **errp)
 937 {
 938     error_setg(errp, QERR_UNSUPPORTED);
 939 }
 940
 941 static IP_ADAPTER_ADDRESSES *guest_get_adapters_addresses(Error **errp)
 942 {
 943     IP_ADAPTER_ADDRESSES *adptr_addrs = NULL;
 944     ULONG adptr_addrs_len = 0;
 945     DWORD ret;
 946
 947     /* Call the first time to get the adptr_addrs_len. */
 948     GetAdaptersAddresses(AF_UNSPEC, GAA_FLAG_INCLUDE_PREFIX,
 949                          NULL, adptr_addrs, &adptr_addrs_len);
 950
 951     adptr_addrs = g_malloc(adptr_addrs_len);
 952     ret = GetAdaptersAddresses(AF_UNSPEC, GAA_FLAG_INCLUDE_PREFIX,
 953                                NULL, adptr_addrs, &adptr_addrs_len);
 954     if (ret != ERROR_SUCCESS) {
 955         error_setg_win32(errp, ret, "failed to get adapters addresses");
 956         g_free(adptr_addrs);
 957         adptr_addrs = NULL;
 958     }
 959     return adptr_addrs;
 960 }
 961
 962 static char *guest_wctomb_dup(WCHAR *wstr)
 963 {
 964     char *str;
 965     size_t i;
 966
 967     i = wcslen(wstr) + 1;
 968     str = g_malloc(i);
 969     WideCharToMultiByte(CP_ACP, WC_COMPOSITECHECK,
 970                         wstr, -1, str, i, NULL, NULL);
 971     return str;
 972 }
 973
 974 static char *guest_addr_to_str(IP_ADAPTER_UNICAST_ADDRESS *ip_addr,
 975                                Error **errp)
 976 {
 977     char addr_str[INET6_ADDRSTRLEN + INET_ADDRSTRLEN];
 978     DWORD len;
 979     int ret;
 980
 981     if (ip_addr->Address.lpSockaddr->sa_family == AF_INET ||
 982             ip_addr->Address.lpSockaddr->sa_family == AF_INET6) {
 983         len = sizeof(addr_str);
 984         ret = WSAAddressToString(ip_addr->Address.lpSockaddr,
 985                                  ip_addr->Address.iSockaddrLength,
 986                                  NULL,
 987                                  addr_str,
 988                                  &len);
 989         if (ret != 0) {
 990             error_setg_win32(errp, WSAGetLastError(),
 991                 "failed address presentation form conversion");
 992             return NULL;
 993         }
 994         return g_strdup(addr_str);
 995     }
 996     return NULL;
 997 }
 998
 999 #if (_WIN32_WINNT >= 0x0600)
1000 static int64_t guest_ip_prefix(IP_ADAPTER_UNICAST_ADDRESS *ip_addr)
1001 {
1002     /* For Windows Vista/2008 and newer, use the OnLinkPrefixLength
1003      * field to obtain the prefix.
1004      */
1005     return ip_addr->OnLinkPrefixLength;
1006 }
1007 #else
1008 /* When using the Windows XP and 2003 build environment, do the best we can to
1009  * figure out the prefix.
1010  */
1011 static IP_ADAPTER_INFO *guest_get_adapters_info(void)
1012 {
1013     IP_ADAPTER_INFO *adptr_info = NULL;
1014     ULONG adptr_info_len = 0;
1015     DWORD ret;
1016
1017     /* Call the first time to get the adptr_info_len. */
1018     GetAdaptersInfo(adptr_info, &adptr_info_len);
1019
1020     adptr_info = g_malloc(adptr_info_len);
1021     ret = GetAdaptersInfo(adptr_info, &adptr_info_len);
1022     if (ret != ERROR_SUCCESS) {
1023         g_free(adptr_info);
1024         adptr_info = NULL;
1025     }
1026     return adptr_info;
1027 }
1028
1029 static int64_t guest_ip_prefix(IP_ADAPTER_UNICAST_ADDRESS *ip_addr)
1030 {
1031     int64_t prefix = -1; /* Use for AF_INET6 and unknown/undetermined values. */
1032     IP_ADAPTER_INFO *adptr_info, *info;
1033     IP_ADDR_STRING *ip;
1034     struct in_addr *p;
1035
1036     if (ip_addr->Address.lpSockaddr->sa_family != AF_INET) {
1037         return prefix;
1038     }
1039     adptr_info = guest_get_adapters_info();
1040     if (adptr_info == NULL) {
1041         return prefix;
1042     }
1043
1044     /* Match up the passed in ip_addr with one found in adaptr_info.
1045      * The matching one in adptr_info will have the netmask.
1046      */
1047     p = &((struct sockaddr_in *)ip_addr->Address.lpSockaddr)->sin_addr;
1048     for (info = adptr_info; info; info = info->Next) {
1049         for (ip = &info->IpAddressList; ip; ip = ip->Next) {
1050             if (p->S_un.S_addr == inet_addr(ip->IpAddress.String)) {
1051                 prefix = ctpop32(inet_addr(ip->IpMask.String));
1052                 goto out;
1053             }
1054         }
1055     }
1056 out:
1057     g_free(adptr_info);
1058     return prefix;
1059 }
1060 #endif
1061
1062 GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp)
1063 {
1064     IP_ADAPTER_ADDRESSES *adptr_addrs, *addr;
1065     IP_ADAPTER_UNICAST_ADDRESS *ip_addr = NULL;
1066     GuestNetworkInterfaceList *head = NULL, *cur_item = NULL;
1067     GuestIpAddressList *head_addr, *cur_addr;
1068     GuestNetworkInterfaceList *info;
1069     GuestIpAddressList *address_item = NULL;
1070     unsigned char *mac_addr;
1071     char *addr_str;
1072     WORD wsa_version;
1073     WSADATA wsa_data;
1074     int ret;
1075
1076     adptr_addrs = guest_get_adapters_addresses(errp);
1077     if (adptr_addrs == NULL) {
1078         return NULL;
1079     }
1080
1081     /* Make WSA APIs available. */
1082     wsa_version = MAKEWORD(2, 2);
1083     ret = WSAStartup(wsa_version, &wsa_data);
1084     if (ret != 0) {
1085         error_setg_win32(errp, ret, "failed socket startup");
1086         goto out;
1087     }
1088
1089     for (addr = adptr_addrs; addr; addr = addr->Next) {
1090         info = g_malloc0(sizeof(*info));
1091
1092         if (cur_item == NULL) {
1093             head = cur_item = info;
1094         } else {
1095             cur_item->next = info;
1096             cur_item = info;
1097         }
1098
1099         info->value = g_malloc0(sizeof(*info->value));
1100         info->value->name = guest_wctomb_dup(addr->FriendlyName);
1101
1102         if (addr->PhysicalAddressLength != 0) {
1103             mac_addr = addr->PhysicalAddress;
1104
1105             info->value->hardware_address =
1106                 g_strdup_printf("%02x:%02x:%02x:%02x:%02x:%02x",
1107                                 (int) mac_addr[0], (int) mac_addr[1],
1108                                 (int) mac_addr[2], (int) mac_addr[3],
1109                                 (int) mac_addr[4], (int) mac_addr[5]);
1110
1111             info->value->has_hardware_address = true;
1112         }
1113
1114         head_addr = NULL;
1115         cur_addr = NULL;
1116         for (ip_addr = addr->FirstUnicastAddress;
1117                 ip_addr;
1118                 ip_addr = ip_addr->Next) {
1119             addr_str = guest_addr_to_str(ip_addr, errp);
1120             if (addr_str == NULL) {
1121                 continue;
1122             }
1123
1124             address_item = g_malloc0(sizeof(*address_item));
1125
1126             if (!cur_addr) {
1127                 head_addr = cur_addr = address_item;
1128             } else {
1129                 cur_addr->next = address_item;
1130                 cur_addr = address_item;
1131             }
1132
1133             address_item->value = g_malloc0(sizeof(*address_item->value));
1134             address_item->value->ip_address = addr_str;
1135             address_item->value->prefix = guest_ip_prefix(ip_addr);
1136             if (ip_addr->Address.lpSockaddr->sa_family == AF_INET) {
1137                 address_item->value->ip_address_type =
1138                     GUEST_IP_ADDRESS_TYPE_IPV4;
1139             } else if (ip_addr->Address.lpSockaddr->sa_family == AF_INET6) {
1140                 address_item->value->ip_address_type =
1141                     GUEST_IP_ADDRESS_TYPE_IPV6;
1142             }
1143         }
1144         if (head_addr) {
1145             info->value->has_ip_addresses = true;
1146             info->value->ip_addresses = head_addr;
1147         }
1148     }
1149     WSACleanup();
1150 out:
1151     g_free(adptr_addrs);
1152     return head;
1153 }
1154
1155 int64_t qmp_guest_get_time(Error **errp)
1156 {
1157     SYSTEMTIME ts = {0};
1158     int64_t time_ns;
1159     FILETIME tf;
1160
1161     GetSystemTime(&ts);
1162     if (ts.wYear < 1601 || ts.wYear > 30827) {
1163         error_setg(errp, "Failed to get time");
1164         return -1;
1165     }
1166
1167     if (!SystemTimeToFileTime(&ts, &tf)) {
1168         error_setg(errp, "Failed to convert system time: %d", (int)GetLastError());
1169         return -1;
1170     }
1171
1172     time_ns = ((((int64_t)tf.dwHighDateTime << 32) | tf.dwLowDateTime)
1173                 - W32_FT_OFFSET) * 100;
1174
1175     return time_ns;
1176 }
1177
1178 void qmp_guest_set_time(bool has_time, int64_t time_ns, Error **errp)
1179 {
1180     Error *local_err = NULL;
1181     SYSTEMTIME ts;
1182     FILETIME tf;
1183     LONGLONG time;
1184
1185     if (!has_time) {
1186         /* Unfortunately, Windows libraries don't provide an easy way to access
1187          * RTC yet:
1188          *
1189          * https://msdn.microsoft.com/en-us/library/aa908981.aspx
1190          */
1191         error_setg(errp, "Time argument is required on this platform");
1192         return;
1193     }
1194
1195     /* Validate time passed by user. */
1196     if (time_ns < 0 || time_ns / 100 > INT64_MAX - W32_FT_OFFSET) {
1197         error_setg(errp, "Time %" PRId64 "is invalid", time_ns);
1198         return;
1199     }
1200
1201     time = time_ns / 100 + W32_FT_OFFSET;
1202
1203     tf.dwLowDateTime = (DWORD) time;
1204     tf.dwHighDateTime = (DWORD) (time >> 32);
1205
1206     if (!FileTimeToSystemTime(&tf, &ts)) {
1207         error_setg(errp, "Failed to convert system time %d",
1208                    (int)GetLastError());
1209         return;
1210     }
1211
1212     acquire_privilege(SE_SYSTEMTIME_NAME, &local_err);
1213     if (local_err) {
1214         error_propagate(errp, local_err);
1215         return;
1216     }
1217
1218     if (!SetSystemTime(&ts)) {
1219         error_setg(errp, "Failed to set time to guest: %d", (int)GetLastError());
1220         return;
1221     }
1222 }
1223
1224 GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp)
1225 {
1226     PSYSTEM_LOGICAL_PROCESSOR_INFORMATION pslpi, ptr;
1227     DWORD length;
1228     GuestLogicalProcessorList *head, **link;
1229     Error *local_err = NULL;
1230     int64_t current;
1231
1232     ptr = pslpi = NULL;
1233     length = 0;
1234     current = 0;
1235     head = NULL;
1236     link = &head;
1237
1238     if ((GetLogicalProcessorInformation(pslpi, &length) == FALSE) &&
1239         (GetLastError() == ERROR_INSUFFICIENT_BUFFER) &&
1240         (length > sizeof(SYSTEM_LOGICAL_PROCESSOR_INFORMATION))) {
1241         ptr = pslpi = g_malloc0(length);
1242         if (GetLogicalProcessorInformation(pslpi, &length) == FALSE) {
1243             error_setg(&local_err, "Failed to get processor information: %d",
1244                        (int)GetLastError());
1245         }
1246     } else {
1247         error_setg(&local_err,
1248                    "Failed to get processor information buffer length: %d",
1249                    (int)GetLastError());
1250     }
1251
1252     while ((local_err == NULL) && (length > 0)) {
1253         if (pslpi->Relationship == RelationProcessorCore) {
1254             ULONG_PTR cpu_bits = pslpi->ProcessorMask;
1255
1256             while (cpu_bits > 0) {
1257                 if (!!(cpu_bits & 1)) {
1258                     GuestLogicalProcessor *vcpu;
1259                     GuestLogicalProcessorList *entry;
1260
1261                     vcpu = g_malloc0(sizeof *vcpu);
1262                     vcpu->logical_id = current++;
1263                     vcpu->online = true;
1264                     vcpu->has_can_offline = false;
1265
1266                     entry = g_malloc0(sizeof *entry);
1267                     entry->value = vcpu;
1268
1269                     *link = entry;
1270                     link = &entry->next;
1271                 }
1272                 cpu_bits >>= 1;
1273             }
1274         }
1275         length -= sizeof(SYSTEM_LOGICAL_PROCESSOR_INFORMATION);
1276         pslpi++; /* next entry */
1277     }
1278
1279     g_free(ptr);
1280
1281     if (local_err == NULL) {
1282         if (head != NULL) {
1283             return head;
1284         }
1285         /* there's no guest with zero VCPUs */
1286         error_setg(&local_err, "Guest reported zero VCPUs");
1287     }
1288
1289     qapi_free_GuestLogicalProcessorList(head);
1290     error_propagate(errp, local_err);
1291     return NULL;
1292 }
1293
1294 int64_t qmp_guest_set_vcpus(GuestLogicalProcessorList *vcpus, Error **errp)
1295 {
1296     error_setg(errp, QERR_UNSUPPORTED);
1297     return -1;
1298 }
1299
1300 static gchar *
1301 get_net_error_message(gint error)
1302 {
1303     HMODULE module = NULL;
1304     gchar *retval = NULL;
1305     wchar_t *msg = NULL;
1306     int flags;
1307     size_t nchars;
1308
1309     flags = FORMAT_MESSAGE_ALLOCATE_BUFFER |
1310         FORMAT_MESSAGE_IGNORE_INSERTS |
1311         FORMAT_MESSAGE_FROM_SYSTEM;
1312
1313     if (error >= NERR_BASE && error <= MAX_NERR) {
1314         module = LoadLibraryExW(L"netmsg.dll", NULL, LOAD_LIBRARY_AS_DATAFILE);
1315
1316         if (module != NULL) {
1317             flags |= FORMAT_MESSAGE_FROM_HMODULE;
1318         }
1319     }
1320
1321     FormatMessageW(flags, module, error, 0, (LPWSTR)&msg, 0, NULL);
1322
1323     if (msg != NULL) {
1324         nchars = wcslen(msg);
1325
1326         if (nchars >= 2 &&
1327             msg[nchars - 1] == L'\n' &&
1328             msg[nchars - 2] == L'\r') {
1329             msg[nchars - 2] = L'\0';
1330         }
1331
1332         retval = g_utf16_to_utf8(msg, -1, NULL, NULL, NULL);
1333
1334         LocalFree(msg);
1335     }
1336
1337     if (module != NULL) {
1338         FreeLibrary(module);
1339     }
1340
1341     return retval;
1342 }
1343
1344 void qmp_guest_set_user_password(const char *username,
1345                                  const char *password,
1346                                  bool crypted,
1347                                  Error **errp)
1348 {
1349     NET_API_STATUS nas;
1350     char *rawpasswddata = NULL;
1351     size_t rawpasswdlen;
1352     wchar_t *user, *wpass;
1353     USER_INFO_1003 pi1003 = { 0, };
1354
1355     if (crypted) {
1356         error_setg(errp, QERR_UNSUPPORTED);
1357         return;
1358     }
1359
1360     rawpasswddata = (char *)qbase64_decode(password, -1, &rawpasswdlen, errp);
1361     if (!rawpasswddata) {
1362         return;
1363     }
1364     rawpasswddata = g_renew(char, rawpasswddata, rawpasswdlen + 1);
1365     rawpasswddata[rawpasswdlen] = '\0';
1366
1367     user = g_utf8_to_utf16(username, -1, NULL, NULL, NULL);
1368     wpass = g_utf8_to_utf16(rawpasswddata, -1, NULL, NULL, NULL);
1369
1370     pi1003.usri1003_password = wpass;
1371     nas = NetUserSetInfo(NULL, user,
1372                          1003, (LPBYTE)&pi1003,
1373                          NULL);
1374
1375     if (nas != NERR_Success) {
1376         gchar *msg = get_net_error_message(nas);
1377         error_setg(errp, "failed to set password: %s", msg);
1378         g_free(msg);
1379     }
1380
1381     g_free(user);
1382     g_free(wpass);
1383     g_free(rawpasswddata);
1384 }
1385
1386 GuestMemoryBlockList *qmp_guest_get_memory_blocks(Error **errp)
1387 {
1388     error_setg(errp, QERR_UNSUPPORTED);
1389     return NULL;
1390 }
1391
1392 GuestMemoryBlockResponseList *
1393 qmp_guest_set_memory_blocks(GuestMemoryBlockList *mem_blks, Error **errp)
1394 {
1395     error_setg(errp, QERR_UNSUPPORTED);
1396     return NULL;
1397 }
1398
1399 GuestMemoryBlockInfo *qmp_guest_get_memory_block_info(Error **errp)
1400 {
1401     error_setg(errp, QERR_UNSUPPORTED);
1402     return NULL;
1403 }
1404
1405 /* add unsupported commands to the blacklist */
1406 GList *ga_command_blacklist_init(GList *blacklist)
1407 {
1408     const char *list_unsupported[] = {
1409         "guest-suspend-hybrid",
1410         "guest-set-vcpus",
1411         "guest-get-memory-blocks", "guest-set-memory-blocks",
1412         "guest-get-memory-block-size",
1413         "guest-fsfreeze-freeze-list",
1414         "guest-fstrim", NULL};
1415     char **p = (char **)list_unsupported;
1416
1417     while (*p) {
1418         blacklist = g_list_append(blacklist, g_strdup(*p++));
1419     }
1420
1421     if (!vss_init(true)) {
1422         g_debug("vss_init failed, vss commands are going to be disabled");
1423         const char *list[] = {
1424             "guest-get-fsinfo", "guest-fsfreeze-status",
1425             "guest-fsfreeze-freeze", "guest-fsfreeze-thaw", NULL};
1426         p = (char **)list;
1427
1428         while (*p) {
1429             blacklist = g_list_append(blacklist, g_strdup(*p++));
1430         }
1431     }
1432
1433     return blacklist;
1434 }
1435
1436 /* register init/cleanup routines for stateful command groups */
1437 void ga_command_state_init(GAState *s, GACommandState *cs)
1438 {
1439     if (!vss_initialized()) {
1440         ga_command_state_add(cs, NULL, guest_fsfreeze_cleanup);
1441     }
1442 }