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 #include "qemu/osdep.h"
  14
  15 #include <wtypes.h>
  16 #include <powrprof.h>
  17 #include <winsock2.h>
  18 #include <ws2tcpip.h>
  19 #include <iptypes.h>
  20 #include <iphlpapi.h>
  21 #ifdef CONFIG_QGA_NTDDSCSI
  22 #include <winioctl.h>
  23 #include <ntddscsi.h>
  24 #include <setupapi.h>
  25 #include <cfgmgr32.h>
  26 #include <initguid.h>
  27 #endif
  28 #include <lm.h>
  29 #include <wtsapi32.h>
  30 #include <wininet.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
  41 #ifndef SHTDN_REASON_FLAG_PLANNED
  42 #define SHTDN_REASON_FLAG_PLANNED 0x80000000
  43 #endif
  44
  45 /* multiple of 100 nanoseconds elapsed between windows baseline
  46  *    (1/1/1601) and Unix Epoch (1/1/1970), accounting for leap years */
  47 #define W32_FT_OFFSET (10000000ULL * 60 * 60 * 24 * \
  48                        (365 * (1970 - 1601) +       \
  49                         (1970 - 1601) / 4 - 3))
  50
  51 #define INVALID_SET_FILE_POINTER ((DWORD)-1)
  52
  53 typedef struct GuestFileHandle {
  54     int64_t id;
  55     HANDLE fh;
  56     QTAILQ_ENTRY(GuestFileHandle) next;
  57 } GuestFileHandle;
  58
  59 static struct {
  60     QTAILQ_HEAD(, GuestFileHandle) filehandles;
  61 } guest_file_state = {
  62     .filehandles = QTAILQ_HEAD_INITIALIZER(guest_file_state.filehandles),
  63 };
  64
  65 #define FILE_GENERIC_APPEND (FILE_GENERIC_WRITE & ~FILE_WRITE_DATA)
  66
  67 typedef struct OpenFlags {
  68     const char *forms;
  69     DWORD desired_access;
  70     DWORD creation_disposition;
  71 } OpenFlags;
  72 static OpenFlags guest_file_open_modes[] = {
  73     {"r",   GENERIC_READ,                     OPEN_EXISTING},
  74     {"rb",  GENERIC_READ,                     OPEN_EXISTING},
  75     {"w",   GENERIC_WRITE,                    CREATE_ALWAYS},
  76     {"wb",  GENERIC_WRITE,                    CREATE_ALWAYS},
  77     {"a",   FILE_GENERIC_APPEND,              OPEN_ALWAYS  },
  78     {"r+",  GENERIC_WRITE|GENERIC_READ,       OPEN_EXISTING},
  79     {"rb+", GENERIC_WRITE|GENERIC_READ,       OPEN_EXISTING},
  80     {"r+b", GENERIC_WRITE|GENERIC_READ,       OPEN_EXISTING},
  81     {"w+",  GENERIC_WRITE|GENERIC_READ,       CREATE_ALWAYS},
  82     {"wb+", GENERIC_WRITE|GENERIC_READ,       CREATE_ALWAYS},
  83     {"w+b", GENERIC_WRITE|GENERIC_READ,       CREATE_ALWAYS},
  84     {"a+",  FILE_GENERIC_APPEND|GENERIC_READ, OPEN_ALWAYS  },
  85     {"ab+", FILE_GENERIC_APPEND|GENERIC_READ, OPEN_ALWAYS  },
  86     {"a+b", FILE_GENERIC_APPEND|GENERIC_READ, OPEN_ALWAYS  }
  87 };
  88
  89 #define debug_error(msg) do { \
  90     char *suffix = g_win32_error_message(GetLastError()); \
  91     g_debug("%s: %s", (msg), suffix); \
  92     g_free(suffix); \
  93 } while (0)
  94
  95 static OpenFlags *find_open_flag(const char *mode_str)
  96 {
  97     int mode;
  98     Error **errp = NULL;
  99
 100     for (mode = 0; mode < ARRAY_SIZE(guest_file_open_modes); ++mode) {
 101         OpenFlags *flags = guest_file_open_modes + mode;
 102
 103         if (strcmp(flags->forms, mode_str) == 0) {
 104             return flags;
 105         }
 106     }
 107
 108     error_setg(errp, "invalid file open mode '%s'", mode_str);
 109     return NULL;
 110 }
 111
 112 static int64_t guest_file_handle_add(HANDLE fh, Error **errp)
 113 {
 114     GuestFileHandle *gfh;
 115     int64_t handle;
 116
 117     handle = ga_get_fd_handle(ga_state, errp);
 118     if (handle < 0) {
 119         return -1;
 120     }
 121     gfh = g_new0(GuestFileHandle, 1);
 122     gfh->id = handle;
 123     gfh->fh = fh;
 124     QTAILQ_INSERT_TAIL(&guest_file_state.filehandles, gfh, next);
 125
 126     return handle;
 127 }
 128
 129 static GuestFileHandle *guest_file_handle_find(int64_t id, Error **errp)
 130 {
 131     GuestFileHandle *gfh;
 132     QTAILQ_FOREACH(gfh, &guest_file_state.filehandles, next) {
 133         if (gfh->id == id) {
 134             return gfh;
 135         }
 136     }
 137     error_setg(errp, "handle '%" PRId64 "' has not been found", id);
 138     return NULL;
 139 }
 140
 141 static void handle_set_nonblocking(HANDLE fh)
 142 {
 143     DWORD file_type, pipe_state;
 144     file_type = GetFileType(fh);
 145     if (file_type != FILE_TYPE_PIPE) {
 146         return;
 147     }
 148     /* If file_type == FILE_TYPE_PIPE, according to MSDN
 149      * the specified file is socket or named pipe */
 150     if (!GetNamedPipeHandleState(fh, &pipe_state, NULL,
 151                                  NULL, NULL, NULL, 0)) {
 152         return;
 153     }
 154     /* The fd is named pipe fd */
 155     if (pipe_state & PIPE_NOWAIT) {
 156         return;
 157     }
 158
 159     pipe_state |= PIPE_NOWAIT;
 160     SetNamedPipeHandleState(fh, &pipe_state, NULL, NULL);
 161 }
 162
 163 int64_t qmp_guest_file_open(const char *path, bool has_mode,
 164                             const char *mode, Error **errp)
 165 {
 166     int64_t fd = -1;
 167     HANDLE fh;
 168     HANDLE templ_file = NULL;
 169     DWORD share_mode = FILE_SHARE_READ;
 170     DWORD flags_and_attr = FILE_ATTRIBUTE_NORMAL;
 171     LPSECURITY_ATTRIBUTES sa_attr = NULL;
 172     OpenFlags *guest_flags;
 173     GError *gerr = NULL;
 174     wchar_t *w_path = NULL;
 175
 176     if (!has_mode) {
 177         mode = "r";
 178     }
 179     slog("guest-file-open called, filepath: %s, mode: %s", path, mode);
 180     guest_flags = find_open_flag(mode);
 181     if (guest_flags == NULL) {
 182         error_setg(errp, "invalid file open mode");
 183         goto done;
 184     }
 185
 186     w_path = g_utf8_to_utf16(path, -1, NULL, NULL, &gerr);
 187     if (!w_path) {
 188         goto done;
 189     }
 190
 191     fh = CreateFileW(w_path, guest_flags->desired_access, share_mode, sa_attr,
 192                     guest_flags->creation_disposition, flags_and_attr,
 193                     templ_file);
 194     if (fh == INVALID_HANDLE_VALUE) {
 195         error_setg_win32(errp, GetLastError(), "failed to open file '%s'",
 196                          path);
 197         goto done;
 198     }
 199
 200     /* set fd non-blocking to avoid common use cases (like reading from a
 201      * named pipe) from hanging the agent
 202      */
 203     handle_set_nonblocking(fh);
 204
 205     fd = guest_file_handle_add(fh, errp);
 206     if (fd < 0) {
 207         CloseHandle(fh);
 208         error_setg(errp, "failed to add handle to qmp handle table");
 209         goto done;
 210     }
 211
 212     slog("guest-file-open, handle: % " PRId64, fd);
 213
 214 done:
 215     if (gerr) {
 216         error_setg(errp, QERR_QGA_COMMAND_FAILED, gerr->message);
 217         g_error_free(gerr);
 218     }
 219     g_free(w_path);
 220     return fd;
 221 }
 222
 223 void qmp_guest_file_close(int64_t handle, Error **errp)
 224 {
 225     bool ret;
 226     GuestFileHandle *gfh = guest_file_handle_find(handle, errp);
 227     slog("guest-file-close called, handle: %" PRId64, handle);
 228     if (gfh == NULL) {
 229         return;
 230     }
 231     ret = CloseHandle(gfh->fh);
 232     if (!ret) {
 233         error_setg_win32(errp, GetLastError(), "failed close handle");
 234         return;
 235     }
 236
 237     QTAILQ_REMOVE(&guest_file_state.filehandles, gfh, next);
 238     g_free(gfh);
 239 }
 240
 241 static void acquire_privilege(const char *name, Error **errp)
 242 {
 243     HANDLE token = NULL;
 244     TOKEN_PRIVILEGES priv;
 245     Error *local_err = NULL;
 246
 247     if (OpenProcessToken(GetCurrentProcess(),
 248         TOKEN_ADJUST_PRIVILEGES|TOKEN_QUERY, &token))
 249     {
 250         if (!LookupPrivilegeValue(NULL, name, &priv.Privileges[0].Luid)) {
 251             error_setg(&local_err, QERR_QGA_COMMAND_FAILED,
 252                        "no luid for requested privilege");
 253             goto out;
 254         }
 255
 256         priv.PrivilegeCount = 1;
 257         priv.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
 258
 259         if (!AdjustTokenPrivileges(token, FALSE, &priv, 0, NULL, 0)) {
 260             error_setg(&local_err, QERR_QGA_COMMAND_FAILED,
 261                        "unable to acquire requested privilege");
 262             goto out;
 263         }
 264
 265     } else {
 266         error_setg(&local_err, QERR_QGA_COMMAND_FAILED,
 267                    "failed to open privilege token");
 268     }
 269
 270 out:
 271     if (token) {
 272         CloseHandle(token);
 273     }
 274     error_propagate(errp, local_err);
 275 }
 276
 277 static void execute_async(DWORD WINAPI (*func)(LPVOID), LPVOID opaque,
 278                           Error **errp)
 279 {
 280     Error *local_err = NULL;
 281
 282     HANDLE thread = CreateThread(NULL, 0, func, opaque, 0, NULL);
 283     if (!thread) {
 284         error_setg(&local_err, QERR_QGA_COMMAND_FAILED,
 285                    "failed to dispatch asynchronous command");
 286         error_propagate(errp, local_err);
 287     }
 288 }
 289
 290 void qmp_guest_shutdown(bool has_mode, const char *mode, Error **errp)
 291 {
 292     Error *local_err = NULL;
 293     UINT shutdown_flag = EWX_FORCE;
 294
 295     slog("guest-shutdown called, mode: %s", mode);
 296
 297     if (!has_mode || strcmp(mode, "powerdown") == 0) {
 298         shutdown_flag |= EWX_POWEROFF;
 299     } else if (strcmp(mode, "halt") == 0) {
 300         shutdown_flag |= EWX_SHUTDOWN;
 301     } else if (strcmp(mode, "reboot") == 0) {
 302         shutdown_flag |= EWX_REBOOT;
 303     } else {
 304         error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "mode",
 305                    "halt|powerdown|reboot");
 306         return;
 307     }
 308
 309     /* Request a shutdown privilege, but try to shut down the system
 310        anyway. */
 311     acquire_privilege(SE_SHUTDOWN_NAME, &local_err);
 312     if (local_err) {
 313         error_propagate(errp, local_err);
 314         return;
 315     }
 316
 317     if (!ExitWindowsEx(shutdown_flag, SHTDN_REASON_FLAG_PLANNED)) {
 318         slog("guest-shutdown failed: %lu", GetLastError());
 319         error_setg(errp, QERR_UNDEFINED_ERROR);
 320     }
 321 }
 322
 323 GuestFileRead *qmp_guest_file_read(int64_t handle, bool has_count,
 324                                    int64_t count, Error **errp)
 325 {
 326     GuestFileRead *read_data = NULL;
 327     guchar *buf;
 328     HANDLE fh;
 329     bool is_ok;
 330     DWORD read_count;
 331     GuestFileHandle *gfh = guest_file_handle_find(handle, errp);
 332
 333     if (!gfh) {
 334         return NULL;
 335     }
 336     if (!has_count) {
 337         count = QGA_READ_COUNT_DEFAULT;
 338     } else if (count < 0 || count >= UINT32_MAX) {
 339         error_setg(errp, "value '%" PRId64
 340                    "' is invalid for argument count", count);
 341         return NULL;
 342     }
 343
 344     fh = gfh->fh;
 345     buf = g_malloc0(count+1);
 346     is_ok = ReadFile(fh, buf, count, &read_count, NULL);
 347     if (!is_ok) {
 348         error_setg_win32(errp, GetLastError(), "failed to read file");
 349         slog("guest-file-read failed, handle %" PRId64, handle);
 350     } else {
 351         buf[read_count] = 0;
 352         read_data = g_new0(GuestFileRead, 1);
 353         read_data->count = (size_t)read_count;
 354         read_data->eof = read_count == 0;
 355
 356         if (read_count != 0) {
 357             read_data->buf_b64 = g_base64_encode(buf, read_count);
 358         }
 359     }
 360     g_free(buf);
 361
 362     return read_data;
 363 }
 364
 365 GuestFileWrite *qmp_guest_file_write(int64_t handle, const char *buf_b64,
 366                                      bool has_count, int64_t count,
 367                                      Error **errp)
 368 {
 369     GuestFileWrite *write_data = NULL;
 370     guchar *buf;
 371     gsize buf_len;
 372     bool is_ok;
 373     DWORD write_count;
 374     GuestFileHandle *gfh = guest_file_handle_find(handle, errp);
 375     HANDLE fh;
 376
 377     if (!gfh) {
 378         return NULL;
 379     }
 380     fh = gfh->fh;
 381     buf = qbase64_decode(buf_b64, -1, &buf_len, errp);
 382     if (!buf) {
 383         return NULL;
 384     }
 385
 386     if (!has_count) {
 387         count = buf_len;
 388     } else if (count < 0 || count > buf_len) {
 389         error_setg(errp, "value '%" PRId64
 390                    "' is invalid for argument count", count);
 391         goto done;
 392     }
 393
 394     is_ok = WriteFile(fh, buf, count, &write_count, NULL);
 395     if (!is_ok) {
 396         error_setg_win32(errp, GetLastError(), "failed to write to file");
 397         slog("guest-file-write-failed, handle: %" PRId64, handle);
 398     } else {
 399         write_data = g_new0(GuestFileWrite, 1);
 400         write_data->count = (size_t) write_count;
 401     }
 402
 403 done:
 404     g_free(buf);
 405     return write_data;
 406 }
 407
 408 GuestFileSeek *qmp_guest_file_seek(int64_t handle, int64_t offset,
 409                                    GuestFileWhence *whence_code,
 410                                    Error **errp)
 411 {
 412     GuestFileHandle *gfh;
 413     GuestFileSeek *seek_data;
 414     HANDLE fh;
 415     LARGE_INTEGER new_pos, off_pos;
 416     off_pos.QuadPart = offset;
 417     BOOL res;
 418     int whence;
 419     Error *err = NULL;
 420
 421     gfh = guest_file_handle_find(handle, errp);
 422     if (!gfh) {
 423         return NULL;
 424     }
 425
 426     /* We stupidly exposed 'whence':'int' in our qapi */
 427     whence = ga_parse_whence(whence_code, &err);
 428     if (err) {
 429         error_propagate(errp, err);
 430         return NULL;
 431     }
 432
 433     fh = gfh->fh;
 434     res = SetFilePointerEx(fh, off_pos, &new_pos, whence);
 435     if (!res) {
 436         error_setg_win32(errp, GetLastError(), "failed to seek file");
 437         return NULL;
 438     }
 439     seek_data = g_new0(GuestFileSeek, 1);
 440     seek_data->position = new_pos.QuadPart;
 441     return seek_data;
 442 }
 443
 444 void qmp_guest_file_flush(int64_t handle, Error **errp)
 445 {
 446     HANDLE fh;
 447     GuestFileHandle *gfh = guest_file_handle_find(handle, errp);
 448     if (!gfh) {
 449         return;
 450     }
 451
 452     fh = gfh->fh;
 453     if (!FlushFileBuffers(fh)) {
 454         error_setg_win32(errp, GetLastError(), "failed to flush file");
 455     }
 456 }
 457
 458 #ifdef CONFIG_QGA_NTDDSCSI
 459
 460 static GuestDiskBusType win2qemu[] = {
 461     [BusTypeUnknown] = GUEST_DISK_BUS_TYPE_UNKNOWN,
 462     [BusTypeScsi] = GUEST_DISK_BUS_TYPE_SCSI,
 463     [BusTypeAtapi] = GUEST_DISK_BUS_TYPE_IDE,
 464     [BusTypeAta] = GUEST_DISK_BUS_TYPE_IDE,
 465     [BusType1394] = GUEST_DISK_BUS_TYPE_IEEE1394,
 466     [BusTypeSsa] = GUEST_DISK_BUS_TYPE_SSA,
 467     [BusTypeFibre] = GUEST_DISK_BUS_TYPE_SSA,
 468     [BusTypeUsb] = GUEST_DISK_BUS_TYPE_USB,
 469     [BusTypeRAID] = GUEST_DISK_BUS_TYPE_RAID,
 470     [BusTypeiScsi] = GUEST_DISK_BUS_TYPE_ISCSI,
 471     [BusTypeSas] = GUEST_DISK_BUS_TYPE_SAS,
 472     [BusTypeSata] = GUEST_DISK_BUS_TYPE_SATA,
 473     [BusTypeSd] =  GUEST_DISK_BUS_TYPE_SD,
 474     [BusTypeMmc] = GUEST_DISK_BUS_TYPE_MMC,
 475 #if (_WIN32_WINNT >= 0x0601)
 476     [BusTypeVirtual] = GUEST_DISK_BUS_TYPE_VIRTUAL,
 477     [BusTypeFileBackedVirtual] = GUEST_DISK_BUS_TYPE_FILE_BACKED_VIRTUAL,
 478 #endif
 479 };
 480
 481 static GuestDiskBusType find_bus_type(STORAGE_BUS_TYPE bus)
 482 {
 483     if (bus >= ARRAY_SIZE(win2qemu) || (int)bus < 0) {
 484         return GUEST_DISK_BUS_TYPE_UNKNOWN;
 485     }
 486     return win2qemu[(int)bus];
 487 }
 488
 489 DEFINE_GUID(GUID_DEVINTERFACE_DISK,
 490         0x53f56307L, 0xb6bf, 0x11d0, 0x94, 0xf2,
 491         0x00, 0xa0, 0xc9, 0x1e, 0xfb, 0x8b);
 492 DEFINE_GUID(GUID_DEVINTERFACE_STORAGEPORT,
 493         0x2accfe60L, 0xc130, 0x11d2, 0xb0, 0x82,
 494         0x00, 0xa0, 0xc9, 0x1e, 0xfb, 0x8b);
 495
 496 static GuestPCIAddress *get_pci_info(int number, Error **errp)
 497 {
 498     HDEVINFO dev_info;
 499     SP_DEVINFO_DATA dev_info_data;
 500     SP_DEVICE_INTERFACE_DATA dev_iface_data;
 501     HANDLE dev_file;
 502     int i;
 503     GuestPCIAddress *pci = NULL;
 504     bool partial_pci = false;
 505
 506     pci = g_malloc0(sizeof(*pci));
 507     pci->domain = -1;
 508     pci->slot = -1;
 509     pci->function = -1;
 510     pci->bus = -1;
 511
 512     dev_info = SetupDiGetClassDevs(&GUID_DEVINTERFACE_DISK, 0, 0,
 513                                    DIGCF_PRESENT | DIGCF_DEVICEINTERFACE);
 514     if (dev_info == INVALID_HANDLE_VALUE) {
 515         error_setg_win32(errp, GetLastError(), "failed to get devices tree");
 516         goto out;
 517     }
 518
 519     g_debug("enumerating devices");
 520     dev_info_data.cbSize = sizeof(SP_DEVINFO_DATA);
 521     dev_iface_data.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA);
 522     for (i = 0; SetupDiEnumDeviceInfo(dev_info, i, &dev_info_data); i++) {
 523         PSP_DEVICE_INTERFACE_DETAIL_DATA pdev_iface_detail_data = NULL;
 524         STORAGE_DEVICE_NUMBER sdn;
 525         char *parent_dev_id = NULL;
 526         HDEVINFO parent_dev_info;
 527         SP_DEVINFO_DATA parent_dev_info_data;
 528         DWORD j;
 529         DWORD size = 0;
 530
 531         g_debug("getting device path");
 532         if (SetupDiEnumDeviceInterfaces(dev_info, &dev_info_data,
 533                                         &GUID_DEVINTERFACE_DISK, 0,
 534                                         &dev_iface_data)) {
 535             while (!SetupDiGetDeviceInterfaceDetail(dev_info, &dev_iface_data,
 536                                                     pdev_iface_detail_data,
 537                                                     size, &size,
 538                                                     &dev_info_data)) {
 539                 if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) {
 540                     pdev_iface_detail_data = g_malloc(size);
 541                     pdev_iface_detail_data->cbSize =
 542                         sizeof(*pdev_iface_detail_data);
 543                 } else {
 544                     error_setg_win32(errp, GetLastError(),
 545                                      "failed to get device interfaces");
 546                     goto free_dev_info;
 547                 }
 548             }
 549
 550             dev_file = CreateFile(pdev_iface_detail_data->DevicePath, 0,
 551                                   FILE_SHARE_READ, NULL, OPEN_EXISTING, 0,
 552                                   NULL);
 553             g_free(pdev_iface_detail_data);
 554
 555             if (!DeviceIoControl(dev_file, IOCTL_STORAGE_GET_DEVICE_NUMBER,
 556                                  NULL, 0, &sdn, sizeof(sdn), &size, NULL)) {
 557                 CloseHandle(dev_file);
 558                 error_setg_win32(errp, GetLastError(),
 559                                  "failed to get device slot number");
 560                 goto free_dev_info;
 561             }
 562
 563             CloseHandle(dev_file);
 564             if (sdn.DeviceNumber != number) {
 565                 continue;
 566             }
 567         } else {
 568             error_setg_win32(errp, GetLastError(),
 569                              "failed to get device interfaces");
 570             goto free_dev_info;
 571         }
 572
 573         g_debug("found device slot %d. Getting storage controller", number);
 574         {
 575             CONFIGRET cr;
 576             DEVINST dev_inst, parent_dev_inst;
 577             ULONG dev_id_size = 0;
 578
 579             size = 0;
 580             while (!SetupDiGetDeviceInstanceId(dev_info, &dev_info_data,
 581                                                parent_dev_id, size, &size)) {
 582                 if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) {
 583                     parent_dev_id = g_malloc(size);
 584                 } else {
 585                     error_setg_win32(errp, GetLastError(),
 586                                      "failed to get device instance ID");
 587                     goto out;
 588                 }
 589             }
 590
 591             /*
 592              * CM API used here as opposed to
 593              * SetupDiGetDeviceProperty(..., DEVPKEY_Device_Parent, ...)
 594              * which exports are only available in mingw-w64 6+
 595              */
 596             cr = CM_Locate_DevInst(&dev_inst, parent_dev_id, 0);
 597             if (cr != CR_SUCCESS) {
 598                 g_error("CM_Locate_DevInst failed with code %lx", cr);
 599                 error_setg_win32(errp, GetLastError(),
 600                                  "failed to get device instance");
 601                 goto out;
 602             }
 603             cr = CM_Get_Parent(&parent_dev_inst, dev_inst, 0);
 604             if (cr != CR_SUCCESS) {
 605                 g_error("CM_Get_Parent failed with code %lx", cr);
 606                 error_setg_win32(errp, GetLastError(),
 607                                  "failed to get parent device instance");
 608                 goto out;
 609             }
 610
 611             cr = CM_Get_Device_ID_Size(&dev_id_size, parent_dev_inst, 0);
 612             if (cr != CR_SUCCESS) {
 613                 g_error("CM_Get_Device_ID_Size failed with code %lx", cr);
 614                 error_setg_win32(errp, GetLastError(),
 615                                  "failed to get parent device ID length");
 616                 goto out;
 617             }
 618
 619             ++dev_id_size;
 620             if (dev_id_size > size) {
 621                 g_free(parent_dev_id);
 622                 parent_dev_id = g_malloc(dev_id_size);
 623             }
 624
 625             cr = CM_Get_Device_ID(parent_dev_inst, parent_dev_id, dev_id_size,
 626                                   0);
 627             if (cr != CR_SUCCESS) {
 628                 g_error("CM_Get_Device_ID failed with code %lx", cr);
 629                 error_setg_win32(errp, GetLastError(),
 630                                  "failed to get parent device ID");
 631                 goto out;
 632             }
 633         }
 634
 635         g_debug("querying storage controller %s for PCI information",
 636                 parent_dev_id);
 637         parent_dev_info =
 638             SetupDiGetClassDevs(&GUID_DEVINTERFACE_STORAGEPORT, parent_dev_id,
 639                                 NULL, DIGCF_PRESENT | DIGCF_DEVICEINTERFACE);
 640         g_free(parent_dev_id);
 641
 642         if (parent_dev_info == INVALID_HANDLE_VALUE) {
 643             error_setg_win32(errp, GetLastError(),
 644                              "failed to get parent device");
 645             goto out;
 646         }
 647
 648         parent_dev_info_data.cbSize = sizeof(SP_DEVINFO_DATA);
 649         if (!SetupDiEnumDeviceInfo(parent_dev_info, 0, &parent_dev_info_data)) {
 650             error_setg_win32(errp, GetLastError(),
 651                            "failed to get parent device data");
 652             goto out;
 653         }
 654
 655         for (j = 0;
 656              SetupDiEnumDeviceInfo(parent_dev_info, j, &parent_dev_info_data);
 657              j++) {
 658             DWORD addr, bus, ui_slot, type;
 659             int func, slot;
 660
 661             /*
 662              * There is no need to allocate buffer in the next functions. The
 663              * size is known and ULONG according to
 664              * https://msdn.microsoft.com/en-us/library/windows/hardware/ff543095(v=vs.85).aspx
 665              */
 666             if (!SetupDiGetDeviceRegistryProperty(
 667                   parent_dev_info, &parent_dev_info_data, SPDRP_BUSNUMBER,
 668                   &type, (PBYTE)&bus, size, NULL)) {
 669                 debug_error("failed to get PCI bus");
 670                 bus = -1;
 671                 partial_pci = true;
 672             }
 673
 674             /*
 675              * The function retrieves the device's address. This value will be
 676              * transformed into device function and number
 677              */
 678             if (!SetupDiGetDeviceRegistryProperty(
 679                     parent_dev_info, &parent_dev_info_data, SPDRP_ADDRESS,
 680                     &type, (PBYTE)&addr, size, NULL)) {
 681                 debug_error("failed to get PCI address");
 682                 addr = -1;
 683                 partial_pci = true;
 684             }
 685
 686             /*
 687              * This call returns UINumber of DEVICE_CAPABILITIES structure.
 688              * This number is typically a user-perceived slot number.
 689              */
 690             if (!SetupDiGetDeviceRegistryProperty(
 691                     parent_dev_info, &parent_dev_info_data, SPDRP_UI_NUMBER,
 692                     &type, (PBYTE)&ui_slot, size, NULL)) {
 693                 debug_error("failed to get PCI slot");
 694                 ui_slot = -1;
 695                 partial_pci = true;
 696             }
 697
 698             /*
 699              * SetupApi gives us the same information as driver with
 700              * IoGetDeviceProperty. According to Microsoft:
 701              *
 702              *   FunctionNumber = (USHORT)((propertyAddress) & 0x0000FFFF)
 703              *   DeviceNumber = (USHORT)(((propertyAddress) >> 16) & 0x0000FFFF)
 704              *   SPDRP_ADDRESS is propertyAddress, so we do the same.
 705              *
 706              * https://docs.microsoft.com/en-us/windows/desktop/api/setupapi/nf-setupapi-setupdigetdeviceregistrypropertya
 707              */
 708             if (partial_pci) {
 709                 pci->domain = -1;
 710                 pci->slot = -1;
 711                 pci->function = -1;
 712                 pci->bus = -1;
 713                 continue;
 714             } else {
 715                 func = ((int)addr == -1) ? -1 : addr & 0x0000FFFF;
 716                 slot = ((int)addr == -1) ? -1 : (addr >> 16) & 0x0000FFFF;
 717                 if ((int)ui_slot != slot) {
 718                     g_debug("mismatch with reported slot values: %d vs %d",
 719                             (int)ui_slot, slot);
 720                 }
 721                 pci->domain = 0;
 722                 pci->slot = (int)ui_slot;
 723                 pci->function = func;
 724                 pci->bus = (int)bus;
 725                 break;
 726             }
 727         }
 728         SetupDiDestroyDeviceInfoList(parent_dev_info);
 729         break;
 730     }
 731
 732 free_dev_info:
 733     SetupDiDestroyDeviceInfoList(dev_info);
 734 out:
 735     return pci;
 736 }
 737
 738 static void get_disk_properties(HANDLE vol_h, GuestDiskAddress *disk,
 739     Error **errp)
 740 {
 741     STORAGE_PROPERTY_QUERY query;
 742     STORAGE_DEVICE_DESCRIPTOR *dev_desc, buf;
 743     DWORD received;
 744     ULONG size = sizeof(buf);
 745
 746     dev_desc = &buf;
 747     query.PropertyId = StorageDeviceProperty;
 748     query.QueryType = PropertyStandardQuery;
 749
 750     if (!DeviceIoControl(vol_h, IOCTL_STORAGE_QUERY_PROPERTY, &query,
 751                          sizeof(STORAGE_PROPERTY_QUERY), dev_desc,
 752                          size, &received, NULL)) {
 753         error_setg_win32(errp, GetLastError(), "failed to get bus type");
 754         return;
 755     }
 756     disk->bus_type = find_bus_type(dev_desc->BusType);
 757     g_debug("bus type %d", disk->bus_type);
 758
 759     /* Query once more. Now with long enough buffer. */
 760     size = dev_desc->Size;
 761     dev_desc = g_malloc0(size);
 762     if (!DeviceIoControl(vol_h, IOCTL_STORAGE_QUERY_PROPERTY, &query,
 763                          sizeof(STORAGE_PROPERTY_QUERY), dev_desc,
 764                          size, &received, NULL)) {
 765         error_setg_win32(errp, GetLastError(), "failed to get serial number");
 766         g_debug("failed to get serial number");
 767         goto out_free;
 768     }
 769     if (dev_desc->SerialNumberOffset > 0) {
 770         const char *serial;
 771         size_t len;
 772
 773         if (dev_desc->SerialNumberOffset >= received) {
 774             error_setg(errp, "failed to get serial number: offset outside the buffer");
 775             g_debug("serial number offset outside the buffer");
 776             goto out_free;
 777         }
 778         serial = (char *)dev_desc + dev_desc->SerialNumberOffset;
 779         len = received - dev_desc->SerialNumberOffset;
 780         g_debug("serial number \"%s\"", serial);
 781         if (*serial != 0) {
 782             disk->serial = g_strndup(serial, len);
 783             disk->has_serial = true;
 784         }
 785     }
 786 out_free:
 787     g_free(dev_desc);
 788
 789     return;
 790 }
 791
 792 static void get_single_disk_info(int disk_number,
 793                                  GuestDiskAddress *disk, Error **errp)
 794 {
 795     SCSI_ADDRESS addr, *scsi_ad;
 796     DWORD len;
 797     HANDLE disk_h;
 798     Error *local_err = NULL;
 799
 800     scsi_ad = &addr;
 801
 802     g_debug("getting disk info for: %s", disk->dev);
 803     disk_h = CreateFile(disk->dev, 0, FILE_SHARE_READ, NULL, OPEN_EXISTING,
 804                        0, NULL);
 805     if (disk_h == INVALID_HANDLE_VALUE) {
 806         error_setg_win32(errp, GetLastError(), "failed to open disk");
 807         return;
 808     }
 809
 810     get_disk_properties(disk_h, disk, &local_err);
 811     if (local_err) {
 812         error_propagate(errp, local_err);
 813         goto err_close;
 814     }
 815
 816     g_debug("bus type %d", disk->bus_type);
 817     /* always set pci_controller as required by schema. get_pci_info() should
 818      * report -1 values for non-PCI buses rather than fail. fail the command
 819      * if that doesn't hold since that suggests some other unexpected
 820      * breakage
 821      */
 822     disk->pci_controller = get_pci_info(disk_number, &local_err);
 823     if (local_err) {
 824         error_propagate(errp, local_err);
 825         goto err_close;
 826     }
 827     if (disk->bus_type == GUEST_DISK_BUS_TYPE_SCSI
 828             || disk->bus_type == GUEST_DISK_BUS_TYPE_IDE
 829             || disk->bus_type == GUEST_DISK_BUS_TYPE_RAID
 830             /* This bus type is not supported before Windows Server 2003 SP1 */
 831             || disk->bus_type == GUEST_DISK_BUS_TYPE_SAS
 832         ) {
 833         /* We are able to use the same ioctls for different bus types
 834          * according to Microsoft docs
 835          * https://technet.microsoft.com/en-us/library/ee851589(v=ws.10).aspx */
 836         g_debug("getting SCSI info");
 837         if (DeviceIoControl(disk_h, IOCTL_SCSI_GET_ADDRESS, NULL, 0, scsi_ad,
 838                             sizeof(SCSI_ADDRESS), &len, NULL)) {
 839             disk->unit = addr.Lun;
 840             disk->target = addr.TargetId;
 841             disk->bus = addr.PathId;
 842         }
 843         /* We do not set error in this case, because we still have enough
 844          * information about volume. */
 845     }
 846
 847 err_close:
 848     CloseHandle(disk_h);
 849     return;
 850 }
 851
 852 /* VSS provider works with volumes, thus there is no difference if
 853  * the volume consist of spanned disks. Info about the first disk in the
 854  * volume is returned for the spanned disk group (LVM) */
 855 static GuestDiskAddressList *build_guest_disk_info(char *guid, Error **errp)
 856 {
 857     Error *local_err = NULL;
 858     GuestDiskAddressList *list = NULL, *cur_item = NULL;
 859     GuestDiskAddress *disk = NULL;
 860     int i;
 861     HANDLE vol_h;
 862     DWORD size;
 863     PVOLUME_DISK_EXTENTS extents = NULL;
 864
 865     /* strip final backslash */
 866     char *name = g_strdup(guid);
 867     if (g_str_has_suffix(name, "\\")) {
 868         name[strlen(name) - 1] = 0;
 869     }
 870
 871     g_debug("opening %s", name);
 872     vol_h = CreateFile(name, 0, FILE_SHARE_READ, NULL, OPEN_EXISTING,
 873                        0, NULL);
 874     if (vol_h == INVALID_HANDLE_VALUE) {
 875         error_setg_win32(errp, GetLastError(), "failed to open volume");
 876         goto out;
 877     }
 878
 879     /* Get list of extents */
 880     g_debug("getting disk extents");
 881     size = sizeof(VOLUME_DISK_EXTENTS);
 882     extents = g_malloc0(size);
 883     if (!DeviceIoControl(vol_h, IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS, NULL,
 884                          0, extents, size, &size, NULL)) {
 885         DWORD last_err = GetLastError();
 886         if (last_err == ERROR_MORE_DATA) {
 887             /* Try once more with big enough buffer */
 888             g_free(extents);
 889             extents = g_malloc0(size);
 890             if (!DeviceIoControl(
 891                     vol_h, IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS, NULL,
 892                     0, extents, size, NULL, NULL)) {
 893                 error_setg_win32(errp, GetLastError(),
 894                     "failed to get disk extents");
 895                 goto out;
 896             }
 897         } else if (last_err == ERROR_INVALID_FUNCTION) {
 898             /* Possibly CD-ROM or a shared drive. Try to pass the volume */
 899             g_debug("volume not on disk");
 900             disk = g_malloc0(sizeof(GuestDiskAddress));
 901             disk->has_dev = true;
 902             disk->dev = g_strdup(name);
 903             get_single_disk_info(0xffffffff, disk, &local_err);
 904             if (local_err) {
 905                 g_debug("failed to get disk info, ignoring error: %s",
 906                     error_get_pretty(local_err));
 907                 error_free(local_err);
 908                 goto out;
 909             }
 910             list = g_malloc0(sizeof(*list));
 911             list->value = disk;
 912             disk = NULL;
 913             list->next = NULL;
 914             goto out;
 915         } else {
 916             error_setg_win32(errp, GetLastError(),
 917                 "failed to get disk extents");
 918             goto out;
 919         }
 920     }
 921     g_debug("Number of extents: %lu", extents->NumberOfDiskExtents);
 922
 923     /* Go through each extent */
 924     for (i = 0; i < extents->NumberOfDiskExtents; i++) {
 925         disk = g_malloc0(sizeof(GuestDiskAddress));
 926
 927         /* Disk numbers directly correspond to numbers used in UNCs
 928          *
 929          * See documentation for DISK_EXTENT:
 930          * https://docs.microsoft.com/en-us/windows/desktop/api/winioctl/ns-winioctl-_disk_extent
 931          *
 932          * See also Naming Files, Paths and Namespaces:
 933          * https://docs.microsoft.com/en-us/windows/desktop/FileIO/naming-a-file#win32-device-namespaces
 934          */
 935         disk->has_dev = true;
 936         disk->dev = g_strdup_printf("\\\\.\\PhysicalDrive%lu",
 937                                     extents->Extents[i].DiskNumber);
 938
 939         get_single_disk_info(extents->Extents[i].DiskNumber, disk, &local_err);
 940         if (local_err) {
 941             error_propagate(errp, local_err);
 942             goto out;
 943         }
 944         cur_item = g_malloc0(sizeof(*list));
 945         cur_item->value = disk;
 946         disk = NULL;
 947         cur_item->next = list;
 948         list = cur_item;
 949     }
 950
 951
 952 out:
 953     if (vol_h != INVALID_HANDLE_VALUE) {
 954         CloseHandle(vol_h);
 955     }
 956     qapi_free_GuestDiskAddress(disk);
 957     g_free(extents);
 958     g_free(name);
 959
 960     return list;
 961 }
 962
 963 #else
 964
 965 static GuestDiskAddressList *build_guest_disk_info(char *guid, Error **errp)
 966 {
 967     return NULL;
 968 }
 969
 970 #endif /* CONFIG_QGA_NTDDSCSI */
 971
 972 static GuestFilesystemInfo *build_guest_fsinfo(char *guid, Error **errp)
 973 {
 974     DWORD info_size;
 975     char mnt, *mnt_point;
 976     char fs_name[32];
 977     char vol_info[MAX_PATH+1];
 978     size_t len;
 979     uint64_t i64FreeBytesToCaller, i64TotalBytes, i64FreeBytes;
 980     GuestFilesystemInfo *fs = NULL;
 981
 982     GetVolumePathNamesForVolumeName(guid, (LPCH)&mnt, 0, &info_size);
 983     if (GetLastError() != ERROR_MORE_DATA) {
 984         error_setg_win32(errp, GetLastError(), "failed to get volume name");
 985         return NULL;
 986     }
 987
 988     mnt_point = g_malloc(info_size + 1);
 989     if (!GetVolumePathNamesForVolumeName(guid, mnt_point, info_size,
 990                                          &info_size)) {
 991         error_setg_win32(errp, GetLastError(), "failed to get volume name");
 992         goto free;
 993     }
 994
 995     len = strlen(mnt_point);
 996     mnt_point[len] = '\\';
 997     mnt_point[len+1] = 0;
 998     if (!GetVolumeInformation(mnt_point, vol_info, sizeof(vol_info), NULL, NULL,
 999                               NULL, (LPSTR)&fs_name, sizeof(fs_name))) {
1000         if (GetLastError() != ERROR_NOT_READY) {
1001             error_setg_win32(errp, GetLastError(), "failed to get volume info");
1002         }
1003         goto free;
1004     }
1005
1006     fs_name[sizeof(fs_name) - 1] = 0;
1007     fs = g_malloc(sizeof(*fs));
1008     fs->name = g_strdup(guid);
1009     fs->has_total_bytes = false;
1010     fs->has_used_bytes = false;
1011     if (len == 0) {
1012         fs->mountpoint = g_strdup("System Reserved");
1013     } else {
1014         fs->mountpoint = g_strndup(mnt_point, len);
1015         if (GetDiskFreeSpaceEx(fs->mountpoint,
1016                                (PULARGE_INTEGER) & i64FreeBytesToCaller,
1017                                (PULARGE_INTEGER) & i64TotalBytes,
1018                                (PULARGE_INTEGER) & i64FreeBytes)) {
1019             fs->used_bytes = i64TotalBytes - i64FreeBytes;
1020             fs->total_bytes = i64TotalBytes;
1021             fs->has_total_bytes = true;
1022             fs->has_used_bytes = true;
1023         }
1024     }
1025     fs->type = g_strdup(fs_name);
1026     fs->disk = build_guest_disk_info(guid, errp);
1027 free:
1028     g_free(mnt_point);
1029     return fs;
1030 }
1031
1032 GuestFilesystemInfoList *qmp_guest_get_fsinfo(Error **errp)
1033 {
1034     HANDLE vol_h;
1035     GuestFilesystemInfoList *new, *ret = NULL;
1036     char guid[256];
1037
1038     vol_h = FindFirstVolume(guid, sizeof(guid));
1039     if (vol_h == INVALID_HANDLE_VALUE) {
1040         error_setg_win32(errp, GetLastError(), "failed to find any volume");
1041         return NULL;
1042     }
1043
1044     do {
1045         GuestFilesystemInfo *info = build_guest_fsinfo(guid, errp);
1046         if (info == NULL) {
1047             continue;
1048         }
1049         new = g_malloc(sizeof(*ret));
1050         new->value = info;
1051         new->next = ret;
1052         ret = new;
1053     } while (FindNextVolume(vol_h, guid, sizeof(guid)));
1054
1055     if (GetLastError() != ERROR_NO_MORE_FILES) {
1056         error_setg_win32(errp, GetLastError(), "failed to find next volume");
1057     }
1058
1059     FindVolumeClose(vol_h);
1060     return ret;
1061 }
1062
1063 /*
1064  * Return status of freeze/thaw
1065  */
1066 GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **errp)
1067 {
1068     if (!vss_initialized()) {
1069         error_setg(errp, QERR_UNSUPPORTED);
1070         return 0;
1071     }
1072
1073     if (ga_is_frozen(ga_state)) {
1074         return GUEST_FSFREEZE_STATUS_FROZEN;
1075     }
1076
1077     return GUEST_FSFREEZE_STATUS_THAWED;
1078 }
1079
1080 /*
1081  * Freeze local file systems using Volume Shadow-copy Service.
1082  * The frozen state is limited for up to 10 seconds by VSS.
1083  */
1084 int64_t qmp_guest_fsfreeze_freeze(Error **errp)
1085 {
1086     return qmp_guest_fsfreeze_freeze_list(false, NULL, errp);
1087 }
1088
1089 int64_t qmp_guest_fsfreeze_freeze_list(bool has_mountpoints,
1090                                        strList *mountpoints,
1091                                        Error **errp)
1092 {
1093     int i;
1094     Error *local_err = NULL;
1095
1096     if (!vss_initialized()) {
1097         error_setg(errp, QERR_UNSUPPORTED);
1098         return 0;
1099     }
1100
1101     slog("guest-fsfreeze called");
1102
1103     /* cannot risk guest agent blocking itself on a write in this state */
1104     ga_set_frozen(ga_state);
1105
1106     qga_vss_fsfreeze(&i, true, mountpoints, &local_err);
1107     if (local_err) {
1108         error_propagate(errp, local_err);
1109         goto error;
1110     }
1111
1112     return i;
1113
1114 error:
1115     local_err = NULL;
1116     qmp_guest_fsfreeze_thaw(&local_err);
1117     if (local_err) {
1118         g_debug("cleanup thaw: %s", error_get_pretty(local_err));
1119         error_free(local_err);
1120     }
1121     return 0;
1122 }
1123
1124 /*
1125  * Thaw local file systems using Volume Shadow-copy Service.
1126  */
1127 int64_t qmp_guest_fsfreeze_thaw(Error **errp)
1128 {
1129     int i;
1130
1131     if (!vss_initialized()) {
1132         error_setg(errp, QERR_UNSUPPORTED);
1133         return 0;
1134     }
1135
1136     qga_vss_fsfreeze(&i, false, NULL, errp);
1137
1138     ga_unset_frozen(ga_state);
1139     return i;
1140 }
1141
1142 static void guest_fsfreeze_cleanup(void)
1143 {
1144     Error *err = NULL;
1145
1146     if (!vss_initialized()) {
1147         return;
1148     }
1149
1150     if (ga_is_frozen(ga_state) == GUEST_FSFREEZE_STATUS_FROZEN) {
1151         qmp_guest_fsfreeze_thaw(&err);
1152         if (err) {
1153             slog("failed to clean up frozen filesystems: %s",
1154                  error_get_pretty(err));
1155             error_free(err);
1156         }
1157     }
1158
1159     vss_deinit(true);
1160 }
1161
1162 /*
1163  * Walk list of mounted file systems in the guest, and discard unused
1164  * areas.
1165  */
1166 GuestFilesystemTrimResponse *
1167 qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp)
1168 {
1169     GuestFilesystemTrimResponse *resp;
1170     HANDLE handle;
1171     WCHAR guid[MAX_PATH] = L"";
1172     OSVERSIONINFO osvi;
1173     BOOL win8_or_later;
1174
1175     ZeroMemory(&osvi, sizeof(OSVERSIONINFO));
1176     osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
1177     GetVersionEx(&osvi);
1178     win8_or_later = (osvi.dwMajorVersion > 6 ||
1179                           ((osvi.dwMajorVersion == 6) &&
1180                            (osvi.dwMinorVersion >= 2)));
1181     if (!win8_or_later) {
1182         error_setg(errp, "fstrim is only supported for Win8+");
1183         return NULL;
1184     }
1185
1186     handle = FindFirstVolumeW(guid, ARRAYSIZE(guid));
1187     if (handle == INVALID_HANDLE_VALUE) {
1188         error_setg_win32(errp, GetLastError(), "failed to find any volume");
1189         return NULL;
1190     }
1191
1192     resp = g_new0(GuestFilesystemTrimResponse, 1);
1193
1194     do {
1195         GuestFilesystemTrimResult *res;
1196         GuestFilesystemTrimResultList *list;
1197         PWCHAR uc_path;
1198         DWORD char_count = 0;
1199         char *path, *out;
1200         GError *gerr = NULL;
1201         gchar * argv[4];
1202
1203         GetVolumePathNamesForVolumeNameW(guid, NULL, 0, &char_count);
1204
1205         if (GetLastError() != ERROR_MORE_DATA) {
1206             continue;
1207         }
1208         if (GetDriveTypeW(guid) != DRIVE_FIXED) {
1209             continue;
1210         }
1211
1212         uc_path = g_malloc(sizeof(WCHAR) * char_count);
1213         if (!GetVolumePathNamesForVolumeNameW(guid, uc_path, char_count,
1214                                               &char_count) || !*uc_path) {
1215             /* strange, but this condition could be faced even with size == 2 */
1216             g_free(uc_path);
1217             continue;
1218         }
1219
1220         res = g_new0(GuestFilesystemTrimResult, 1);
1221
1222         path = g_utf16_to_utf8(uc_path, char_count, NULL, NULL, &gerr);
1223
1224         g_free(uc_path);
1225
1226         if (!path) {
1227             res->has_error = true;
1228             res->error = g_strdup(gerr->message);
1229             g_error_free(gerr);
1230             break;
1231         }
1232
1233         res->path = path;
1234
1235         list = g_new0(GuestFilesystemTrimResultList, 1);
1236         list->value = res;
1237         list->next = resp->paths;
1238
1239         resp->paths = list;
1240
1241         memset(argv, 0, sizeof(argv));
1242         argv[0] = (gchar *)"defrag.exe";
1243         argv[1] = (gchar *)"/L";
1244         argv[2] = path;
1245
1246         if (!g_spawn_sync(NULL, argv, NULL, G_SPAWN_SEARCH_PATH, NULL, NULL,
1247                           &out /* stdout */, NULL /* stdin */,
1248                           NULL, &gerr)) {
1249             res->has_error = true;
1250             res->error = g_strdup(gerr->message);
1251             g_error_free(gerr);
1252         } else {
1253             /* defrag.exe is UGLY. Exit code is ALWAYS zero.
1254                Error is reported in the output with something like
1255                (x89000020) etc code in the stdout */
1256
1257             int i;
1258             gchar **lines = g_strsplit(out, "\r\n", 0);
1259             g_free(out);
1260
1261             for (i = 0; lines[i] != NULL; i++) {
1262                 if (g_strstr_len(lines[i], -1, "(0x") == NULL) {
1263                     continue;
1264                 }
1265                 res->has_error = true;
1266                 res->error = g_strdup(lines[i]);
1267                 break;
1268             }
1269             g_strfreev(lines);
1270         }
1271     } while (FindNextVolumeW(handle, guid, ARRAYSIZE(guid)));
1272
1273     FindVolumeClose(handle);
1274     return resp;
1275 }
1276
1277 typedef enum {
1278     GUEST_SUSPEND_MODE_DISK,
1279     GUEST_SUSPEND_MODE_RAM
1280 } GuestSuspendMode;
1281
1282 static void check_suspend_mode(GuestSuspendMode mode, Error **errp)
1283 {
1284     SYSTEM_POWER_CAPABILITIES sys_pwr_caps;
1285     Error *local_err = NULL;
1286
1287     ZeroMemory(&sys_pwr_caps, sizeof(sys_pwr_caps));
1288     if (!GetPwrCapabilities(&sys_pwr_caps)) {
1289         error_setg(&local_err, QERR_QGA_COMMAND_FAILED,
1290                    "failed to determine guest suspend capabilities");
1291         goto out;
1292     }
1293
1294     switch (mode) {
1295     case GUEST_SUSPEND_MODE_DISK:
1296         if (!sys_pwr_caps.SystemS4) {
1297             error_setg(&local_err, QERR_QGA_COMMAND_FAILED,
1298                        "suspend-to-disk not supported by OS");
1299         }
1300         break;
1301     case GUEST_SUSPEND_MODE_RAM:
1302         if (!sys_pwr_caps.SystemS3) {
1303             error_setg(&local_err, QERR_QGA_COMMAND_FAILED,
1304                        "suspend-to-ram not supported by OS");
1305         }
1306         break;
1307     default:
1308         error_setg(&local_err, QERR_INVALID_PARAMETER_VALUE, "mode",
1309                    "GuestSuspendMode");
1310     }
1311
1312 out:
1313     error_propagate(errp, local_err);
1314 }
1315
1316 static DWORD WINAPI do_suspend(LPVOID opaque)
1317 {
1318     GuestSuspendMode *mode = opaque;
1319     DWORD ret = 0;
1320
1321     if (!SetSuspendState(*mode == GUEST_SUSPEND_MODE_DISK, TRUE, TRUE)) {
1322         slog("failed to suspend guest, %lu", GetLastError());
1323         ret = -1;
1324     }
1325     g_free(mode);
1326     return ret;
1327 }
1328
1329 void qmp_guest_suspend_disk(Error **errp)
1330 {
1331     Error *local_err = NULL;
1332     GuestSuspendMode *mode = g_new(GuestSuspendMode, 1);
1333
1334     *mode = GUEST_SUSPEND_MODE_DISK;
1335     check_suspend_mode(*mode, &local_err);
1336     acquire_privilege(SE_SHUTDOWN_NAME, &local_err);
1337     execute_async(do_suspend, mode, &local_err);
1338
1339     if (local_err) {
1340         error_propagate(errp, local_err);
1341         g_free(mode);
1342     }
1343 }
1344
1345 void qmp_guest_suspend_ram(Error **errp)
1346 {
1347     Error *local_err = NULL;
1348     GuestSuspendMode *mode = g_new(GuestSuspendMode, 1);
1349
1350     *mode = GUEST_SUSPEND_MODE_RAM;
1351     check_suspend_mode(*mode, &local_err);
1352     acquire_privilege(SE_SHUTDOWN_NAME, &local_err);
1353     execute_async(do_suspend, mode, &local_err);
1354
1355     if (local_err) {
1356         error_propagate(errp, local_err);
1357         g_free(mode);
1358     }
1359 }
1360
1361 void qmp_guest_suspend_hybrid(Error **errp)
1362 {
1363     error_setg(errp, QERR_UNSUPPORTED);
1364 }
1365
1366 static IP_ADAPTER_ADDRESSES *guest_get_adapters_addresses(Error **errp)
1367 {
1368     IP_ADAPTER_ADDRESSES *adptr_addrs = NULL;
1369     ULONG adptr_addrs_len = 0;
1370     DWORD ret;
1371
1372     /* Call the first time to get the adptr_addrs_len. */
1373     GetAdaptersAddresses(AF_UNSPEC, GAA_FLAG_INCLUDE_PREFIX,
1374                          NULL, adptr_addrs, &adptr_addrs_len);
1375
1376     adptr_addrs = g_malloc(adptr_addrs_len);
1377     ret = GetAdaptersAddresses(AF_UNSPEC, GAA_FLAG_INCLUDE_PREFIX,
1378                                NULL, adptr_addrs, &adptr_addrs_len);
1379     if (ret != ERROR_SUCCESS) {
1380         error_setg_win32(errp, ret, "failed to get adapters addresses");
1381         g_free(adptr_addrs);
1382         adptr_addrs = NULL;
1383     }
1384     return adptr_addrs;
1385 }
1386
1387 static char *guest_wctomb_dup(WCHAR *wstr)
1388 {
1389     char *str;
1390     size_t i;
1391
1392     i = wcslen(wstr) + 1;
1393     str = g_malloc(i);
1394     WideCharToMultiByte(CP_ACP, WC_COMPOSITECHECK,
1395                         wstr, -1, str, i, NULL, NULL);
1396     return str;
1397 }
1398
1399 static char *guest_addr_to_str(IP_ADAPTER_UNICAST_ADDRESS *ip_addr,
1400                                Error **errp)
1401 {
1402     char addr_str[INET6_ADDRSTRLEN + INET_ADDRSTRLEN];
1403     DWORD len;
1404     int ret;
1405
1406     if (ip_addr->Address.lpSockaddr->sa_family == AF_INET ||
1407             ip_addr->Address.lpSockaddr->sa_family == AF_INET6) {
1408         len = sizeof(addr_str);
1409         ret = WSAAddressToString(ip_addr->Address.lpSockaddr,
1410                                  ip_addr->Address.iSockaddrLength,
1411                                  NULL,
1412                                  addr_str,
1413                                  &len);
1414         if (ret != 0) {
1415             error_setg_win32(errp, WSAGetLastError(),
1416                 "failed address presentation form conversion");
1417             return NULL;
1418         }
1419         return g_strdup(addr_str);
1420     }
1421     return NULL;
1422 }
1423
1424 static int64_t guest_ip_prefix(IP_ADAPTER_UNICAST_ADDRESS *ip_addr)
1425 {
1426     /* For Windows Vista/2008 and newer, use the OnLinkPrefixLength
1427      * field to obtain the prefix.
1428      */
1429     return ip_addr->OnLinkPrefixLength;
1430 }
1431
1432 #define INTERFACE_PATH_BUF_SZ 512
1433
1434 static DWORD get_interface_index(const char *guid)
1435 {
1436     ULONG index;
1437     DWORD status;
1438     wchar_t wbuf[INTERFACE_PATH_BUF_SZ];
1439     snwprintf(wbuf, INTERFACE_PATH_BUF_SZ, L"\\device\\tcpip_%s", guid);
1440     wbuf[INTERFACE_PATH_BUF_SZ - 1] = 0;
1441     status = GetAdapterIndex (wbuf, &index);
1442     if (status != NO_ERROR) {
1443         return (DWORD)~0;
1444     } else {
1445         return index;
1446     }
1447 }
1448
1449 typedef NETIOAPI_API (WINAPI *GetIfEntry2Func)(PMIB_IF_ROW2 Row);
1450
1451 static int guest_get_network_stats(const char *name,
1452                                    GuestNetworkInterfaceStat *stats)
1453 {
1454     OSVERSIONINFO os_ver;
1455
1456     os_ver.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
1457     GetVersionEx(&os_ver);
1458     if (os_ver.dwMajorVersion >= 6) {
1459         MIB_IF_ROW2 a_mid_ifrow;
1460         GetIfEntry2Func getifentry2_ex;
1461         DWORD if_index = 0;
1462         HMODULE module = GetModuleHandle("iphlpapi");
1463         PVOID func = GetProcAddress(module, "GetIfEntry2");
1464
1465         if (func == NULL) {
1466             return -1;
1467         }
1468
1469         getifentry2_ex = (GetIfEntry2Func)func;
1470         if_index = get_interface_index(name);
1471         if (if_index == (DWORD)~0) {
1472             return -1;
1473         }
1474
1475         memset(&a_mid_ifrow, 0, sizeof(a_mid_ifrow));
1476         a_mid_ifrow.InterfaceIndex = if_index;
1477         if (NO_ERROR == getifentry2_ex(&a_mid_ifrow)) {
1478             stats->rx_bytes = a_mid_ifrow.InOctets;
1479             stats->rx_packets = a_mid_ifrow.InUcastPkts;
1480             stats->rx_errs = a_mid_ifrow.InErrors;
1481             stats->rx_dropped = a_mid_ifrow.InDiscards;
1482             stats->tx_bytes = a_mid_ifrow.OutOctets;
1483             stats->tx_packets = a_mid_ifrow.OutUcastPkts;
1484             stats->tx_errs = a_mid_ifrow.OutErrors;
1485             stats->tx_dropped = a_mid_ifrow.OutDiscards;
1486             return 0;
1487         }
1488     }
1489     return -1;
1490 }
1491
1492 GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp)
1493 {
1494     IP_ADAPTER_ADDRESSES *adptr_addrs, *addr;
1495     IP_ADAPTER_UNICAST_ADDRESS *ip_addr = NULL;
1496     GuestNetworkInterfaceList *head = NULL, *cur_item = NULL;
1497     GuestIpAddressList *head_addr, *cur_addr;
1498     GuestNetworkInterfaceList *info;
1499     GuestNetworkInterfaceStat *interface_stat = NULL;
1500     GuestIpAddressList *address_item = NULL;
1501     unsigned char *mac_addr;
1502     char *addr_str;
1503     WORD wsa_version;
1504     WSADATA wsa_data;
1505     int ret;
1506
1507     adptr_addrs = guest_get_adapters_addresses(errp);
1508     if (adptr_addrs == NULL) {
1509         return NULL;
1510     }
1511
1512     /* Make WSA APIs available. */
1513     wsa_version = MAKEWORD(2, 2);
1514     ret = WSAStartup(wsa_version, &wsa_data);
1515     if (ret != 0) {
1516         error_setg_win32(errp, ret, "failed socket startup");
1517         goto out;
1518     }
1519
1520     for (addr = adptr_addrs; addr; addr = addr->Next) {
1521         info = g_malloc0(sizeof(*info));
1522
1523         if (cur_item == NULL) {
1524             head = cur_item = info;
1525         } else {
1526             cur_item->next = info;
1527             cur_item = info;
1528         }
1529
1530         info->value = g_malloc0(sizeof(*info->value));
1531         info->value->name = guest_wctomb_dup(addr->FriendlyName);
1532
1533         if (addr->PhysicalAddressLength != 0) {
1534             mac_addr = addr->PhysicalAddress;
1535
1536             info->value->hardware_address =
1537                 g_strdup_printf("%02x:%02x:%02x:%02x:%02x:%02x",
1538                                 (int) mac_addr[0], (int) mac_addr[1],
1539                                 (int) mac_addr[2], (int) mac_addr[3],
1540                                 (int) mac_addr[4], (int) mac_addr[5]);
1541
1542             info->value->has_hardware_address = true;
1543         }
1544
1545         head_addr = NULL;
1546         cur_addr = NULL;
1547         for (ip_addr = addr->FirstUnicastAddress;
1548                 ip_addr;
1549                 ip_addr = ip_addr->Next) {
1550             addr_str = guest_addr_to_str(ip_addr, errp);
1551             if (addr_str == NULL) {
1552                 continue;
1553             }
1554
1555             address_item = g_malloc0(sizeof(*address_item));
1556
1557             if (!cur_addr) {
1558                 head_addr = cur_addr = address_item;
1559             } else {
1560                 cur_addr->next = address_item;
1561                 cur_addr = address_item;
1562             }
1563
1564             address_item->value = g_malloc0(sizeof(*address_item->value));
1565             address_item->value->ip_address = addr_str;
1566             address_item->value->prefix = guest_ip_prefix(ip_addr);
1567             if (ip_addr->Address.lpSockaddr->sa_family == AF_INET) {
1568                 address_item->value->ip_address_type =
1569                     GUEST_IP_ADDRESS_TYPE_IPV4;
1570             } else if (ip_addr->Address.lpSockaddr->sa_family == AF_INET6) {
1571                 address_item->value->ip_address_type =
1572                     GUEST_IP_ADDRESS_TYPE_IPV6;
1573             }
1574         }
1575         if (head_addr) {
1576             info->value->has_ip_addresses = true;
1577             info->value->ip_addresses = head_addr;
1578         }
1579         if (!info->value->has_statistics) {
1580             interface_stat = g_malloc0(sizeof(*interface_stat));
1581             if (guest_get_network_stats(addr->AdapterName,
1582                 interface_stat) == -1) {
1583                 info->value->has_statistics = false;
1584                 g_free(interface_stat);
1585             } else {
1586                 info->value->statistics = interface_stat;
1587                 info->value->has_statistics = true;
1588             }
1589         }
1590     }
1591     WSACleanup();
1592 out:
1593     g_free(adptr_addrs);
1594     return head;
1595 }
1596
1597 int64_t qmp_guest_get_time(Error **errp)
1598 {
1599     SYSTEMTIME ts = {0};
1600     FILETIME tf;
1601
1602     GetSystemTime(&ts);
1603     if (ts.wYear < 1601 || ts.wYear > 30827) {
1604         error_setg(errp, "Failed to get time");
1605         return -1;
1606     }
1607
1608     if (!SystemTimeToFileTime(&ts, &tf)) {
1609         error_setg(errp, "Failed to convert system time: %d", (int)GetLastError());
1610         return -1;
1611     }
1612
1613     return ((((int64_t)tf.dwHighDateTime << 32) | tf.dwLowDateTime)
1614                 - W32_FT_OFFSET) * 100;
1615 }
1616
1617 void qmp_guest_set_time(bool has_time, int64_t time_ns, Error **errp)
1618 {
1619     Error *local_err = NULL;
1620     SYSTEMTIME ts;
1621     FILETIME tf;
1622     LONGLONG time;
1623
1624     if (!has_time) {
1625         /* Unfortunately, Windows libraries don't provide an easy way to access
1626          * RTC yet:
1627          *
1628          * https://msdn.microsoft.com/en-us/library/aa908981.aspx
1629          *
1630          * Instead, a workaround is to use the Windows win32tm command to
1631          * resync the time using the Windows Time service.
1632          */
1633         LPVOID msg_buffer;
1634         DWORD ret_flags;
1635
1636         HRESULT hr = system("w32tm /resync /nowait");
1637
1638         if (GetLastError() != 0) {
1639             strerror_s((LPTSTR) & msg_buffer, 0, errno);
1640             error_setg(errp, "system(...) failed: %s", (LPCTSTR)msg_buffer);
1641         } else if (hr != 0) {
1642             if (hr == HRESULT_FROM_WIN32(ERROR_SERVICE_NOT_ACTIVE)) {
1643                 error_setg(errp, "Windows Time service not running on the "
1644                                  "guest");
1645             } else {
1646                 if (!FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER |
1647                                    FORMAT_MESSAGE_FROM_SYSTEM |
1648                                    FORMAT_MESSAGE_IGNORE_INSERTS, NULL,
1649                                    (DWORD)hr, MAKELANGID(LANG_NEUTRAL,
1650                                    SUBLANG_DEFAULT), (LPTSTR) & msg_buffer, 0,
1651                                    NULL)) {
1652                     error_setg(errp, "w32tm failed with error (0x%lx), couldn'"
1653                                      "t retrieve error message", hr);
1654                 } else {
1655                     error_setg(errp, "w32tm failed with error (0x%lx): %s", hr,
1656                                (LPCTSTR)msg_buffer);
1657                     LocalFree(msg_buffer);
1658                 }
1659             }
1660         } else if (!InternetGetConnectedState(&ret_flags, 0)) {
1661             error_setg(errp, "No internet connection on guest, sync not "
1662                              "accurate");
1663         }
1664         return;
1665     }
1666
1667     /* Validate time passed by user. */
1668     if (time_ns < 0 || time_ns / 100 > INT64_MAX - W32_FT_OFFSET) {
1669         error_setg(errp, "Time %" PRId64 "is invalid", time_ns);
1670         return;
1671     }
1672
1673     time = time_ns / 100 + W32_FT_OFFSET;
1674
1675     tf.dwLowDateTime = (DWORD) time;
1676     tf.dwHighDateTime = (DWORD) (time >> 32);
1677
1678     if (!FileTimeToSystemTime(&tf, &ts)) {
1679         error_setg(errp, "Failed to convert system time %d",
1680                    (int)GetLastError());
1681         return;
1682     }
1683
1684     acquire_privilege(SE_SYSTEMTIME_NAME, &local_err);
1685     if (local_err) {
1686         error_propagate(errp, local_err);
1687         return;
1688     }
1689
1690     if (!SetSystemTime(&ts)) {
1691         error_setg(errp, "Failed to set time to guest: %d", (int)GetLastError());
1692         return;
1693     }
1694 }
1695
1696 GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp)
1697 {
1698     PSYSTEM_LOGICAL_PROCESSOR_INFORMATION pslpi, ptr;
1699     DWORD length;
1700     GuestLogicalProcessorList *head, **link;
1701     Error *local_err = NULL;
1702     int64_t current;
1703
1704     ptr = pslpi = NULL;
1705     length = 0;
1706     current = 0;
1707     head = NULL;
1708     link = &head;
1709
1710     if ((GetLogicalProcessorInformation(pslpi, &length) == FALSE) &&
1711         (GetLastError() == ERROR_INSUFFICIENT_BUFFER) &&
1712         (length > sizeof(SYSTEM_LOGICAL_PROCESSOR_INFORMATION))) {
1713         ptr = pslpi = g_malloc0(length);
1714         if (GetLogicalProcessorInformation(pslpi, &length) == FALSE) {
1715             error_setg(&local_err, "Failed to get processor information: %d",
1716                        (int)GetLastError());
1717         }
1718     } else {
1719         error_setg(&local_err,
1720                    "Failed to get processor information buffer length: %d",
1721                    (int)GetLastError());
1722     }
1723
1724     while ((local_err == NULL) && (length > 0)) {
1725         if (pslpi->Relationship == RelationProcessorCore) {
1726             ULONG_PTR cpu_bits = pslpi->ProcessorMask;
1727
1728             while (cpu_bits > 0) {
1729                 if (!!(cpu_bits & 1)) {
1730                     GuestLogicalProcessor *vcpu;
1731                     GuestLogicalProcessorList *entry;
1732
1733                     vcpu = g_malloc0(sizeof *vcpu);
1734                     vcpu->logical_id = current++;
1735                     vcpu->online = true;
1736                     vcpu->has_can_offline = true;
1737
1738                     entry = g_malloc0(sizeof *entry);
1739                     entry->value = vcpu;
1740
1741                     *link = entry;
1742                     link = &entry->next;
1743                 }
1744                 cpu_bits >>= 1;
1745             }
1746         }
1747         length -= sizeof(SYSTEM_LOGICAL_PROCESSOR_INFORMATION);
1748         pslpi++; /* next entry */
1749     }
1750
1751     g_free(ptr);
1752
1753     if (local_err == NULL) {
1754         if (head != NULL) {
1755             return head;
1756         }
1757         /* there's no guest with zero VCPUs */
1758         error_setg(&local_err, "Guest reported zero VCPUs");
1759     }
1760
1761     qapi_free_GuestLogicalProcessorList(head);
1762     error_propagate(errp, local_err);
1763     return NULL;
1764 }
1765
1766 int64_t qmp_guest_set_vcpus(GuestLogicalProcessorList *vcpus, Error **errp)
1767 {
1768     error_setg(errp, QERR_UNSUPPORTED);
1769     return -1;
1770 }
1771
1772 static gchar *
1773 get_net_error_message(gint error)
1774 {
1775     HMODULE module = NULL;
1776     gchar *retval = NULL;
1777     wchar_t *msg = NULL;
1778     int flags;
1779     size_t nchars;
1780
1781     flags = FORMAT_MESSAGE_ALLOCATE_BUFFER |
1782         FORMAT_MESSAGE_IGNORE_INSERTS |
1783         FORMAT_MESSAGE_FROM_SYSTEM;
1784
1785     if (error >= NERR_BASE && error <= MAX_NERR) {
1786         module = LoadLibraryExW(L"netmsg.dll", NULL, LOAD_LIBRARY_AS_DATAFILE);
1787
1788         if (module != NULL) {
1789             flags |= FORMAT_MESSAGE_FROM_HMODULE;
1790         }
1791     }
1792
1793     FormatMessageW(flags, module, error, 0, (LPWSTR)&msg, 0, NULL);
1794
1795     if (msg != NULL) {
1796         nchars = wcslen(msg);
1797
1798         if (nchars >= 2 &&
1799             msg[nchars - 1] == L'\n' &&
1800             msg[nchars - 2] == L'\r') {
1801             msg[nchars - 2] = L'\0';
1802         }
1803
1804         retval = g_utf16_to_utf8(msg, -1, NULL, NULL, NULL);
1805
1806         LocalFree(msg);
1807     }
1808
1809     if (module != NULL) {
1810         FreeLibrary(module);
1811     }
1812
1813     return retval;
1814 }
1815
1816 void qmp_guest_set_user_password(const char *username,
1817                                  const char *password,
1818                                  bool crypted,
1819                                  Error **errp)
1820 {
1821     NET_API_STATUS nas;
1822     char *rawpasswddata = NULL;
1823     size_t rawpasswdlen;
1824     wchar_t *user = NULL, *wpass = NULL;
1825     USER_INFO_1003 pi1003 = { 0, };
1826     GError *gerr = NULL;
1827
1828     if (crypted) {
1829         error_setg(errp, QERR_UNSUPPORTED);
1830         return;
1831     }
1832
1833     rawpasswddata = (char *)qbase64_decode(password, -1, &rawpasswdlen, errp);
1834     if (!rawpasswddata) {
1835         return;
1836     }
1837     rawpasswddata = g_renew(char, rawpasswddata, rawpasswdlen + 1);
1838     rawpasswddata[rawpasswdlen] = '\0';
1839
1840     user = g_utf8_to_utf16(username, -1, NULL, NULL, &gerr);
1841     if (!user) {
1842         goto done;
1843     }
1844
1845     wpass = g_utf8_to_utf16(rawpasswddata, -1, NULL, NULL, &gerr);
1846     if (!wpass) {
1847         goto done;
1848     }
1849
1850     pi1003.usri1003_password = wpass;
1851     nas = NetUserSetInfo(NULL, user,
1852                          1003, (LPBYTE)&pi1003,
1853                          NULL);
1854
1855     if (nas != NERR_Success) {
1856         gchar *msg = get_net_error_message(nas);
1857         error_setg(errp, "failed to set password: %s", msg);
1858         g_free(msg);
1859     }
1860
1861 done:
1862     if (gerr) {
1863         error_setg(errp, QERR_QGA_COMMAND_FAILED, gerr->message);
1864         g_error_free(gerr);
1865     }
1866     g_free(user);
1867     g_free(wpass);
1868     g_free(rawpasswddata);
1869 }
1870
1871 GuestMemoryBlockList *qmp_guest_get_memory_blocks(Error **errp)
1872 {
1873     error_setg(errp, QERR_UNSUPPORTED);
1874     return NULL;
1875 }
1876
1877 GuestMemoryBlockResponseList *
1878 qmp_guest_set_memory_blocks(GuestMemoryBlockList *mem_blks, Error **errp)
1879 {
1880     error_setg(errp, QERR_UNSUPPORTED);
1881     return NULL;
1882 }
1883
1884 GuestMemoryBlockInfo *qmp_guest_get_memory_block_info(Error **errp)
1885 {
1886     error_setg(errp, QERR_UNSUPPORTED);
1887     return NULL;
1888 }
1889
1890 /* add unsupported commands to the blacklist */
1891 GList *ga_command_blacklist_init(GList *blacklist)
1892 {
1893     const char *list_unsupported[] = {
1894         "guest-suspend-hybrid",
1895         "guest-set-vcpus",
1896         "guest-get-memory-blocks", "guest-set-memory-blocks",
1897         "guest-get-memory-block-size",
1898         NULL};
1899     char **p = (char **)list_unsupported;
1900
1901     while (*p) {
1902         blacklist = g_list_append(blacklist, g_strdup(*p++));
1903     }
1904
1905     if (!vss_init(true)) {
1906         g_debug("vss_init failed, vss commands are going to be disabled");
1907         const char *list[] = {
1908             "guest-get-fsinfo", "guest-fsfreeze-status",
1909             "guest-fsfreeze-freeze", "guest-fsfreeze-thaw", NULL};
1910         p = (char **)list;
1911
1912         while (*p) {
1913             blacklist = g_list_append(blacklist, g_strdup(*p++));
1914         }
1915     }
1916
1917     return blacklist;
1918 }
1919
1920 /* register init/cleanup routines for stateful command groups */
1921 void ga_command_state_init(GAState *s, GACommandState *cs)
1922 {
1923     if (!vss_initialized()) {
1924         ga_command_state_add(cs, NULL, guest_fsfreeze_cleanup);
1925     }
1926 }
1927
1928 /* MINGW is missing two fields: IncomingFrames & OutgoingFrames */
1929 typedef struct _GA_WTSINFOA {
1930     WTS_CONNECTSTATE_CLASS State;
1931     DWORD SessionId;
1932     DWORD IncomingBytes;
1933     DWORD OutgoingBytes;
1934     DWORD IncomingFrames;
1935     DWORD OutgoingFrames;
1936     DWORD IncomingCompressedBytes;
1937     DWORD OutgoingCompressedBy;
1938     CHAR WinStationName[WINSTATIONNAME_LENGTH];
1939     CHAR Domain[DOMAIN_LENGTH];
1940     CHAR UserName[USERNAME_LENGTH + 1];
1941     LARGE_INTEGER ConnectTime;
1942     LARGE_INTEGER DisconnectTime;
1943     LARGE_INTEGER LastInputTime;
1944     LARGE_INTEGER LogonTime;
1945     LARGE_INTEGER CurrentTime;
1946
1947 } GA_WTSINFOA;
1948
1949 GuestUserList *qmp_guest_get_users(Error **err)
1950 {
1951 #define QGA_NANOSECONDS 10000000
1952
1953     GHashTable *cache = NULL;
1954     GuestUserList *head = NULL, *cur_item = NULL;
1955
1956     DWORD buffer_size = 0, count = 0, i = 0;
1957     GA_WTSINFOA *info = NULL;
1958     WTS_SESSION_INFOA *entries = NULL;
1959     GuestUserList *item = NULL;
1960     GuestUser *user = NULL;
1961     gpointer value = NULL;
1962     INT64 login = 0;
1963     double login_time = 0;
1964
1965     cache = g_hash_table_new(g_str_hash, g_str_equal);
1966
1967     if (WTSEnumerateSessionsA(NULL, 0, 1, &entries, &count)) {
1968         for (i = 0; i < count; ++i) {
1969             buffer_size = 0;
1970             info = NULL;
1971             if (WTSQuerySessionInformationA(
1972                 NULL,
1973                 entries[i].SessionId,
1974                 WTSSessionInfo,
1975                 (LPSTR *)&info,
1976                 &buffer_size
1977             )) {
1978
1979                 if (strlen(info->UserName) == 0) {
1980                     WTSFreeMemory(info);
1981                     continue;
1982                 }
1983
1984                 login = info->LogonTime.QuadPart;
1985                 login -= W32_FT_OFFSET;
1986                 login_time = ((double)login) / QGA_NANOSECONDS;
1987
1988                 if (g_hash_table_contains(cache, info->UserName)) {
1989                     value = g_hash_table_lookup(cache, info->UserName);
1990                     user = (GuestUser *)value;
1991                     if (user->login_time > login_time) {
1992                         user->login_time = login_time;
1993                     }
1994                 } else {
1995                     item = g_new0(GuestUserList, 1);
1996                     item->value = g_new0(GuestUser, 1);
1997
1998                     item->value->user = g_strdup(info->UserName);
1999                     item->value->domain = g_strdup(info->Domain);
2000                     item->value->has_domain = true;
2001
2002                     item->value->login_time = login_time;
2003
2004                     g_hash_table_add(cache, item->value->user);
2005
2006                     if (!cur_item) {
2007                         head = cur_item = item;
2008                     } else {
2009                         cur_item->next = item;
2010                         cur_item = item;
2011                     }
2012                 }
2013             }
2014             WTSFreeMemory(info);
2015         }
2016         WTSFreeMemory(entries);
2017     }
2018     g_hash_table_destroy(cache);
2019     return head;
2020 }
2021
2022 typedef struct _ga_matrix_lookup_t {
2023     int major;
2024     int minor;
2025     char const *version;
2026     char const *version_id;
2027 } ga_matrix_lookup_t;
2028
2029 static ga_matrix_lookup_t const WIN_VERSION_MATRIX[2][8] = {
2030     {
2031         /* Desktop editions */
2032         { 5, 0, "Microsoft Windows 2000",   "2000"},
2033         { 5, 1, "Microsoft Windows XP",     "xp"},
2034         { 6, 0, "Microsoft Windows Vista",  "vista"},
2035         { 6, 1, "Microsoft Windows 7"       "7"},
2036         { 6, 2, "Microsoft Windows 8",      "8"},
2037         { 6, 3, "Microsoft Windows 8.1",    "8.1"},
2038         {10, 0, "Microsoft Windows 10",     "10"},
2039         { 0, 0, 0}
2040     },{
2041         /* Server editions */
2042         { 5, 2, "Microsoft Windows Server 2003",        "2003"},
2043         { 6, 0, "Microsoft Windows Server 2008",        "2008"},
2044         { 6, 1, "Microsoft Windows Server 2008 R2",     "2008r2"},
2045         { 6, 2, "Microsoft Windows Server 2012",        "2012"},
2046         { 6, 3, "Microsoft Windows Server 2012 R2",     "2012r2"},
2047         { 0, 0, 0},
2048         { 0, 0, 0},
2049         { 0, 0, 0}
2050     }
2051 };
2052
2053 typedef struct _ga_win_10_0_server_t {
2054     int final_build;
2055     char const *version;
2056     char const *version_id;
2057 } ga_win_10_0_server_t;
2058
2059 static ga_win_10_0_server_t const WIN_10_0_SERVER_VERSION_MATRIX[3] = {
2060     {14393, "Microsoft Windows Server 2016",    "2016"},
2061     {17763, "Microsoft Windows Server 2019",    "2019"},
2062     {0, 0}
2063 };
2064
2065 static void ga_get_win_version(RTL_OSVERSIONINFOEXW *info, Error **errp)
2066 {
2067     typedef NTSTATUS(WINAPI * rtl_get_version_t)(
2068         RTL_OSVERSIONINFOEXW *os_version_info_ex);
2069
2070     info->dwOSVersionInfoSize = sizeof(RTL_OSVERSIONINFOEXW);
2071
2072     HMODULE module = GetModuleHandle("ntdll");
2073     PVOID fun = GetProcAddress(module, "RtlGetVersion");
2074     if (fun == NULL) {
2075         error_setg(errp, QERR_QGA_COMMAND_FAILED,
2076             "Failed to get address of RtlGetVersion");
2077         return;
2078     }
2079
2080     rtl_get_version_t rtl_get_version = (rtl_get_version_t)fun;
2081     rtl_get_version(info);
2082     return;
2083 }
2084
2085 static char *ga_get_win_name(OSVERSIONINFOEXW const *os_version, bool id)
2086 {
2087     DWORD major = os_version->dwMajorVersion;
2088     DWORD minor = os_version->dwMinorVersion;
2089     DWORD build = os_version->dwBuildNumber;
2090     int tbl_idx = (os_version->wProductType != VER_NT_WORKSTATION);
2091     ga_matrix_lookup_t const *table = WIN_VERSION_MATRIX[tbl_idx];
2092     ga_win_10_0_server_t const *win_10_0_table = WIN_10_0_SERVER_VERSION_MATRIX;
2093     while (table->version != NULL) {
2094         if (major == 10 && minor == 0 && tbl_idx) {
2095             while (win_10_0_table->version != NULL) {
2096                 if (build <= win_10_0_table->final_build) {
2097                     if (id) {
2098                         return g_strdup(win_10_0_table->version_id);
2099                     } else {
2100                         return g_strdup(win_10_0_table->version);
2101                     }
2102                 }
2103                 win_10_0_table++;
2104             }
2105         } else if (major == table->major && minor == table->minor) {
2106             if (id) {
2107                 return g_strdup(table->version_id);
2108             } else {
2109                 return g_strdup(table->version);
2110             }
2111         }
2112         ++table;
2113     }
2114     slog("failed to lookup Windows version: major=%lu, minor=%lu",
2115         major, minor);
2116     return g_strdup("N/A");
2117 }
2118
2119 static char *ga_get_win_product_name(Error **errp)
2120 {
2121     HKEY key = NULL;
2122     DWORD size = 128;
2123     char *result = g_malloc0(size);
2124     LONG err = ERROR_SUCCESS;
2125
2126     err = RegOpenKeyA(HKEY_LOCAL_MACHINE,
2127                       "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion",
2128                       &key);
2129     if (err != ERROR_SUCCESS) {
2130         error_setg_win32(errp, err, "failed to open registry key");
2131         goto fail;
2132     }
2133
2134     err = RegQueryValueExA(key, "ProductName", NULL, NULL,
2135                             (LPBYTE)result, &size);
2136     if (err == ERROR_MORE_DATA) {
2137         slog("ProductName longer than expected (%lu bytes), retrying",
2138                 size);
2139         g_free(result);
2140         result = NULL;
2141         if (size > 0) {
2142             result = g_malloc0(size);
2143             err = RegQueryValueExA(key, "ProductName", NULL, NULL,
2144                                     (LPBYTE)result, &size);
2145         }
2146     }
2147     if (err != ERROR_SUCCESS) {
2148         error_setg_win32(errp, err, "failed to retrive ProductName");
2149         goto fail;
2150     }
2151
2152     return result;
2153
2154 fail:
2155     g_free(result);
2156     return NULL;
2157 }
2158
2159 static char *ga_get_current_arch(void)
2160 {
2161     SYSTEM_INFO info;
2162     GetNativeSystemInfo(&info);
2163     char *result = NULL;
2164     switch (info.wProcessorArchitecture) {
2165     case PROCESSOR_ARCHITECTURE_AMD64:
2166         result = g_strdup("x86_64");
2167         break;
2168     case PROCESSOR_ARCHITECTURE_ARM:
2169         result = g_strdup("arm");
2170         break;
2171     case PROCESSOR_ARCHITECTURE_IA64:
2172         result = g_strdup("ia64");
2173         break;
2174     case PROCESSOR_ARCHITECTURE_INTEL:
2175         result = g_strdup("x86");
2176         break;
2177     case PROCESSOR_ARCHITECTURE_UNKNOWN:
2178     default:
2179         slog("unknown processor architecture 0x%0x",
2180             info.wProcessorArchitecture);
2181         result = g_strdup("unknown");
2182         break;
2183     }
2184     return result;
2185 }
2186
2187 GuestOSInfo *qmp_guest_get_osinfo(Error **errp)
2188 {
2189     Error *local_err = NULL;
2190     OSVERSIONINFOEXW os_version = {0};
2191     bool server;
2192     char *product_name;
2193     GuestOSInfo *info;
2194
2195     ga_get_win_version(&os_version, &local_err);
2196     if (local_err) {
2197         error_propagate(errp, local_err);
2198         return NULL;
2199     }
2200
2201     server = os_version.wProductType != VER_NT_WORKSTATION;
2202     product_name = ga_get_win_product_name(&local_err);
2203     if (product_name == NULL) {
2204         error_propagate(errp, local_err);
2205         return NULL;
2206     }
2207
2208     info = g_new0(GuestOSInfo, 1);
2209
2210     info->has_kernel_version = true;
2211     info->kernel_version = g_strdup_printf("%lu.%lu",
2212         os_version.dwMajorVersion,
2213         os_version.dwMinorVersion);
2214     info->has_kernel_release = true;
2215     info->kernel_release = g_strdup_printf("%lu",
2216         os_version.dwBuildNumber);
2217     info->has_machine = true;
2218     info->machine = ga_get_current_arch();
2219
2220     info->has_id = true;
2221     info->id = g_strdup("mswindows");
2222     info->has_name = true;
2223     info->name = g_strdup("Microsoft Windows");
2224     info->has_pretty_name = true;
2225     info->pretty_name = product_name;
2226     info->has_version = true;
2227     info->version = ga_get_win_name(&os_version, false);
2228     info->has_version_id = true;
2229     info->version_id = ga_get_win_name(&os_version, true);
2230     info->has_variant = true;
2231     info->variant = g_strdup(server ? "server" : "client");
2232     info->has_variant_id = true;
2233     info->variant_id = g_strdup(server ? "server" : "client");
2234
2235     return info;
2236 }