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 <glib.h>
  15 #include <wtypes.h>
  16 #include <powrprof.h>
  17 #include <stdio.h>
  18 #include <string.h>
  19 #include "qga/guest-agent-core.h"
  20 #include "qga/vss-win32.h"
  21 #include "qga-qmp-commands.h"
  22 #include "qapi/qmp/qerror.h"
  23 #include "qemu/queue.h"
  24
  25 #ifndef SHTDN_REASON_FLAG_PLANNED
  26 #define SHTDN_REASON_FLAG_PLANNED 0x80000000
  27 #endif
  28
  29 /* multiple of 100 nanoseconds elapsed between windows baseline
  30  *    (1/1/1601) and Unix Epoch (1/1/1970), accounting for leap years */
  31 #define W32_FT_OFFSET (10000000ULL * 60 * 60 * 24 * \
  32                        (365 * (1970 - 1601) +       \
  33                         (1970 - 1601) / 4 - 3))
  34
  35 #define INVALID_SET_FILE_POINTER ((DWORD)-1)
  36
  37 typedef struct GuestFileHandle {
  38     int64_t id;
  39     HANDLE fh;
  40     QTAILQ_ENTRY(GuestFileHandle) next;
  41 } GuestFileHandle;
  42
  43 static struct {
  44     QTAILQ_HEAD(, GuestFileHandle) filehandles;
  45 } guest_file_state;
  46
  47
  48 typedef struct OpenFlags {
  49     const char *forms;
  50     DWORD desired_access;
  51     DWORD creation_disposition;
  52 } OpenFlags;
  53 static OpenFlags guest_file_open_modes[] = {
  54     {"r",   GENERIC_READ,               OPEN_EXISTING},
  55     {"rb",  GENERIC_READ,               OPEN_EXISTING},
  56     {"w",   GENERIC_WRITE,              CREATE_ALWAYS},
  57     {"wb",  GENERIC_WRITE,              CREATE_ALWAYS},
  58     {"a",   GENERIC_WRITE,              OPEN_ALWAYS  },
  59     {"r+",  GENERIC_WRITE|GENERIC_READ, OPEN_EXISTING},
  60     {"rb+", GENERIC_WRITE|GENERIC_READ, OPEN_EXISTING},
  61     {"r+b", GENERIC_WRITE|GENERIC_READ, OPEN_EXISTING},
  62     {"w+",  GENERIC_WRITE|GENERIC_READ, CREATE_ALWAYS},
  63     {"wb+", GENERIC_WRITE|GENERIC_READ, CREATE_ALWAYS},
  64     {"w+b", GENERIC_WRITE|GENERIC_READ, CREATE_ALWAYS},
  65     {"a+",  GENERIC_WRITE|GENERIC_READ, OPEN_ALWAYS  },
  66     {"ab+", GENERIC_WRITE|GENERIC_READ, OPEN_ALWAYS  },
  67     {"a+b", GENERIC_WRITE|GENERIC_READ, OPEN_ALWAYS  }
  68 };
  69
  70 static OpenFlags *find_open_flag(const char *mode_str)
  71 {
  72     int mode;
  73     Error **errp = NULL;
  74
  75     for (mode = 0; mode < ARRAY_SIZE(guest_file_open_modes); ++mode) {
  76         OpenFlags *flags = guest_file_open_modes + mode;
  77
  78         if (strcmp(flags->forms, mode_str) == 0) {
  79             return flags;
  80         }
  81     }
  82
  83     error_setg(errp, "invalid file open mode '%s'", mode_str);
  84     return NULL;
  85 }
  86
  87 static int64_t guest_file_handle_add(HANDLE fh, Error **errp)
  88 {
  89     GuestFileHandle *gfh;
  90     int64_t handle;
  91
  92     handle = ga_get_fd_handle(ga_state, errp);
  93     if (handle < 0) {
  94         return -1;
  95     }
  96     gfh = g_malloc0(sizeof(GuestFileHandle));
  97     gfh->id = handle;
  98     gfh->fh = fh;
  99     QTAILQ_INSERT_TAIL(&guest_file_state.filehandles, gfh, next);
 100
 101     return handle;
 102 }
 103
 104 static GuestFileHandle *guest_file_handle_find(int64_t id, Error **errp)
 105 {
 106     GuestFileHandle *gfh;
 107     QTAILQ_FOREACH(gfh, &guest_file_state.filehandles, next) {
 108         if (gfh->id == id) {
 109             return gfh;
 110         }
 111     }
 112     error_setg(errp, "handle '%" PRId64 "' has not been found", id);
 113     return NULL;
 114 }
 115
 116 int64_t qmp_guest_file_open(const char *path, bool has_mode,
 117                             const char *mode, Error **errp)
 118 {
 119     int64_t fd;
 120     HANDLE fh;
 121     HANDLE templ_file = NULL;
 122     DWORD share_mode = FILE_SHARE_READ;
 123     DWORD flags_and_attr = FILE_ATTRIBUTE_NORMAL;
 124     LPSECURITY_ATTRIBUTES sa_attr = NULL;
 125     OpenFlags *guest_flags;
 126
 127     if (!has_mode) {
 128         mode = "r";
 129     }
 130     slog("guest-file-open called, filepath: %s, mode: %s", path, mode);
 131     guest_flags = find_open_flag(mode);
 132     if (guest_flags == NULL) {
 133         error_setg(errp, "invalid file open mode");
 134         return -1;
 135     }
 136
 137     fh = CreateFile(path, guest_flags->desired_access, share_mode, sa_attr,
 138                     guest_flags->creation_disposition, flags_and_attr,
 139                     templ_file);
 140     if (fh == INVALID_HANDLE_VALUE) {
 141         error_setg_win32(errp, GetLastError(), "failed to open file '%s'",
 142                          path);
 143         return -1;
 144     }
 145
 146     fd = guest_file_handle_add(fh, errp);
 147     if (fd < 0) {
 148         CloseHandle(&fh);
 149         error_setg(errp, "failed to add handle to qmp handle table");
 150         return -1;
 151     }
 152
 153     slog("guest-file-open, handle: % " PRId64, fd);
 154     return fd;
 155 }
 156
 157 void qmp_guest_file_close(int64_t handle, Error **errp)
 158 {
 159     bool ret;
 160     GuestFileHandle *gfh = guest_file_handle_find(handle, errp);
 161     slog("guest-file-close called, handle: %" PRId64, handle);
 162     if (gfh == NULL) {
 163         return;
 164     }
 165     ret = CloseHandle(gfh->fh);
 166     if (!ret) {
 167         error_setg_win32(errp, GetLastError(), "failed close handle");
 168         return;
 169     }
 170
 171     QTAILQ_REMOVE(&guest_file_state.filehandles, gfh, next);
 172     g_free(gfh);
 173 }
 174
 175 static void acquire_privilege(const char *name, Error **errp)
 176 {
 177     HANDLE token = NULL;
 178     TOKEN_PRIVILEGES priv;
 179     Error *local_err = NULL;
 180
 181     if (OpenProcessToken(GetCurrentProcess(),
 182         TOKEN_ADJUST_PRIVILEGES|TOKEN_QUERY, &token))
 183     {
 184         if (!LookupPrivilegeValue(NULL, name, &priv.Privileges[0].Luid)) {
 185             error_setg(&local_err, QERR_QGA_COMMAND_FAILED,
 186                        "no luid for requested privilege");
 187             goto out;
 188         }
 189
 190         priv.PrivilegeCount = 1;
 191         priv.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
 192
 193         if (!AdjustTokenPrivileges(token, FALSE, &priv, 0, NULL, 0)) {
 194             error_setg(&local_err, QERR_QGA_COMMAND_FAILED,
 195                        "unable to acquire requested privilege");
 196             goto out;
 197         }
 198
 199     } else {
 200         error_setg(&local_err, QERR_QGA_COMMAND_FAILED,
 201                    "failed to open privilege token");
 202     }
 203
 204 out:
 205     if (token) {
 206         CloseHandle(token);
 207     }
 208     if (local_err) {
 209         error_propagate(errp, local_err);
 210     }
 211 }
 212
 213 static void execute_async(DWORD WINAPI (*func)(LPVOID), LPVOID opaque,
 214                           Error **errp)
 215 {
 216     Error *local_err = NULL;
 217
 218     HANDLE thread = CreateThread(NULL, 0, func, opaque, 0, NULL);
 219     if (!thread) {
 220         error_setg(&local_err, QERR_QGA_COMMAND_FAILED,
 221                    "failed to dispatch asynchronous command");
 222         error_propagate(errp, local_err);
 223     }
 224 }
 225
 226 void qmp_guest_shutdown(bool has_mode, const char *mode, Error **errp)
 227 {
 228     Error *local_err = NULL;
 229     UINT shutdown_flag = EWX_FORCE;
 230
 231     slog("guest-shutdown called, mode: %s", mode);
 232
 233     if (!has_mode || strcmp(mode, "powerdown") == 0) {
 234         shutdown_flag |= EWX_POWEROFF;
 235     } else if (strcmp(mode, "halt") == 0) {
 236         shutdown_flag |= EWX_SHUTDOWN;
 237     } else if (strcmp(mode, "reboot") == 0) {
 238         shutdown_flag |= EWX_REBOOT;
 239     } else {
 240         error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "mode",
 241                    "halt|powerdown|reboot");
 242         return;
 243     }
 244
 245     /* Request a shutdown privilege, but try to shut down the system
 246        anyway. */
 247     acquire_privilege(SE_SHUTDOWN_NAME, &local_err);
 248     if (local_err) {
 249         error_propagate(errp, local_err);
 250         return;
 251     }
 252
 253     if (!ExitWindowsEx(shutdown_flag, SHTDN_REASON_FLAG_PLANNED)) {
 254         slog("guest-shutdown failed: %lu", GetLastError());
 255         error_setg(errp, QERR_UNDEFINED_ERROR);
 256     }
 257 }
 258
 259 GuestFileRead *qmp_guest_file_read(int64_t handle, bool has_count,
 260                                    int64_t count, Error **errp)
 261 {
 262     GuestFileRead *read_data = NULL;
 263     guchar *buf;
 264     HANDLE fh;
 265     bool is_ok;
 266     DWORD read_count;
 267     GuestFileHandle *gfh = guest_file_handle_find(handle, errp);
 268
 269     if (!gfh) {
 270         return NULL;
 271     }
 272     if (!has_count) {
 273         count = QGA_READ_COUNT_DEFAULT;
 274     } else if (count < 0) {
 275         error_setg(errp, "value '%" PRId64
 276                    "' is invalid for argument count", count);
 277         return NULL;
 278     }
 279
 280     fh = gfh->fh;
 281     buf = g_malloc0(count+1);
 282     is_ok = ReadFile(fh, buf, count, &read_count, NULL);
 283     if (!is_ok) {
 284         error_setg_win32(errp, GetLastError(), "failed to read file");
 285         slog("guest-file-read failed, handle %" PRId64, handle);
 286     } else {
 287         buf[read_count] = 0;
 288         read_data = g_malloc0(sizeof(GuestFileRead));
 289         read_data->count = (size_t)read_count;
 290         read_data->eof = read_count == 0;
 291
 292         if (read_count != 0) {
 293             read_data->buf_b64 = g_base64_encode(buf, read_count);
 294         }
 295     }
 296     g_free(buf);
 297
 298     return read_data;
 299 }
 300
 301 GuestFileWrite *qmp_guest_file_write(int64_t handle, const char *buf_b64,
 302                                      bool has_count, int64_t count,
 303                                      Error **errp)
 304 {
 305     GuestFileWrite *write_data = NULL;
 306     guchar *buf;
 307     gsize buf_len;
 308     bool is_ok;
 309     DWORD write_count;
 310     GuestFileHandle *gfh = guest_file_handle_find(handle, errp);
 311     HANDLE fh;
 312
 313     if (!gfh) {
 314         return NULL;
 315     }
 316     fh = gfh->fh;
 317     buf = g_base64_decode(buf_b64, &buf_len);
 318
 319     if (!has_count) {
 320         count = buf_len;
 321     } else if (count < 0 || count > buf_len) {
 322         error_setg(errp, "value '%" PRId64
 323                    "' is invalid for argument count", count);
 324         goto done;
 325     }
 326
 327     is_ok = WriteFile(fh, buf, count, &write_count, NULL);
 328     if (!is_ok) {
 329         error_setg_win32(errp, GetLastError(), "failed to write to file");
 330         slog("guest-file-write-failed, handle: %" PRId64, handle);
 331     } else {
 332         write_data = g_malloc0(sizeof(GuestFileWrite));
 333         write_data->count = (size_t) write_count;
 334     }
 335
 336 done:
 337     g_free(buf);
 338     return write_data;
 339 }
 340
 341 GuestFileSeek *qmp_guest_file_seek(int64_t handle, int64_t offset,
 342                                    int64_t whence, Error **errp)
 343 {
 344     GuestFileHandle *gfh;
 345     GuestFileSeek *seek_data;
 346     HANDLE fh;
 347     LARGE_INTEGER new_pos, off_pos;
 348     off_pos.QuadPart = offset;
 349     BOOL res;
 350     gfh = guest_file_handle_find(handle, errp);
 351     if (!gfh) {
 352         return NULL;
 353     }
 354
 355     fh = gfh->fh;
 356     res = SetFilePointerEx(fh, off_pos, &new_pos, whence);
 357     if (!res) {
 358         error_setg_win32(errp, GetLastError(), "failed to seek file");
 359         return NULL;
 360     }
 361     seek_data = g_new0(GuestFileSeek, 1);
 362     seek_data->position = new_pos.QuadPart;
 363     return seek_data;
 364 }
 365
 366 void qmp_guest_file_flush(int64_t handle, Error **errp)
 367 {
 368     HANDLE fh;
 369     GuestFileHandle *gfh = guest_file_handle_find(handle, errp);
 370     if (!gfh) {
 371         return;
 372     }
 373
 374     fh = gfh->fh;
 375     if (!FlushFileBuffers(fh)) {
 376         error_setg_win32(errp, GetLastError(), "failed to flush file");
 377     }
 378 }
 379
 380 static void guest_file_init(void)
 381 {
 382     QTAILQ_INIT(&guest_file_state.filehandles);
 383 }
 384
 385 GuestFilesystemInfoList *qmp_guest_get_fsinfo(Error **errp)
 386 {
 387     error_setg(errp, QERR_UNSUPPORTED);
 388     return NULL;
 389 }
 390
 391 /*
 392  * Return status of freeze/thaw
 393  */
 394 GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **errp)
 395 {
 396     if (!vss_initialized()) {
 397         error_setg(errp, QERR_UNSUPPORTED);
 398         return 0;
 399     }
 400
 401     if (ga_is_frozen(ga_state)) {
 402         return GUEST_FSFREEZE_STATUS_FROZEN;
 403     }
 404
 405     return GUEST_FSFREEZE_STATUS_THAWED;
 406 }
 407
 408 /*
 409  * Freeze local file systems using Volume Shadow-copy Service.
 410  * The frozen state is limited for up to 10 seconds by VSS.
 411  */
 412 int64_t qmp_guest_fsfreeze_freeze(Error **errp)
 413 {
 414     int i;
 415     Error *local_err = NULL;
 416
 417     if (!vss_initialized()) {
 418         error_setg(errp, QERR_UNSUPPORTED);
 419         return 0;
 420     }
 421
 422     slog("guest-fsfreeze called");
 423
 424     /* cannot risk guest agent blocking itself on a write in this state */
 425     ga_set_frozen(ga_state);
 426
 427     qga_vss_fsfreeze(&i, &local_err, true);
 428     if (local_err) {
 429         error_propagate(errp, local_err);
 430         goto error;
 431     }
 432
 433     return i;
 434
 435 error:
 436     local_err = NULL;
 437     qmp_guest_fsfreeze_thaw(&local_err);
 438     if (local_err) {
 439         g_debug("cleanup thaw: %s", error_get_pretty(local_err));
 440         error_free(local_err);
 441     }
 442     return 0;
 443 }
 444
 445 int64_t qmp_guest_fsfreeze_freeze_list(bool has_mountpoints,
 446                                        strList *mountpoints,
 447                                        Error **errp)
 448 {
 449     error_setg(errp, QERR_UNSUPPORTED);
 450
 451     return 0;
 452 }
 453
 454 /*
 455  * Thaw local file systems using Volume Shadow-copy Service.
 456  */
 457 int64_t qmp_guest_fsfreeze_thaw(Error **errp)
 458 {
 459     int i;
 460
 461     if (!vss_initialized()) {
 462         error_setg(errp, QERR_UNSUPPORTED);
 463         return 0;
 464     }
 465
 466     qga_vss_fsfreeze(&i, errp, false);
 467
 468     ga_unset_frozen(ga_state);
 469     return i;
 470 }
 471
 472 static void guest_fsfreeze_cleanup(void)
 473 {
 474     Error *err = NULL;
 475
 476     if (!vss_initialized()) {
 477         return;
 478     }
 479
 480     if (ga_is_frozen(ga_state) == GUEST_FSFREEZE_STATUS_FROZEN) {
 481         qmp_guest_fsfreeze_thaw(&err);
 482         if (err) {
 483             slog("failed to clean up frozen filesystems: %s",
 484                  error_get_pretty(err));
 485             error_free(err);
 486         }
 487     }
 488
 489     vss_deinit(true);
 490 }
 491
 492 /*
 493  * Walk list of mounted file systems in the guest, and discard unused
 494  * areas.
 495  */
 496 void qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp)
 497 {
 498     error_setg(errp, QERR_UNSUPPORTED);
 499 }
 500
 501 typedef enum {
 502     GUEST_SUSPEND_MODE_DISK,
 503     GUEST_SUSPEND_MODE_RAM
 504 } GuestSuspendMode;
 505
 506 static void check_suspend_mode(GuestSuspendMode mode, Error **errp)
 507 {
 508     SYSTEM_POWER_CAPABILITIES sys_pwr_caps;
 509     Error *local_err = NULL;
 510
 511     ZeroMemory(&sys_pwr_caps, sizeof(sys_pwr_caps));
 512     if (!GetPwrCapabilities(&sys_pwr_caps)) {
 513         error_setg(&local_err, QERR_QGA_COMMAND_FAILED,
 514                    "failed to determine guest suspend capabilities");
 515         goto out;
 516     }
 517
 518     switch (mode) {
 519     case GUEST_SUSPEND_MODE_DISK:
 520         if (!sys_pwr_caps.SystemS4) {
 521             error_setg(&local_err, QERR_QGA_COMMAND_FAILED,
 522                        "suspend-to-disk not supported by OS");
 523         }
 524         break;
 525     case GUEST_SUSPEND_MODE_RAM:
 526         if (!sys_pwr_caps.SystemS3) {
 527             error_setg(&local_err, QERR_QGA_COMMAND_FAILED,
 528                        "suspend-to-ram not supported by OS");
 529         }
 530         break;
 531     default:
 532         error_setg(&local_err, QERR_INVALID_PARAMETER_VALUE, "mode",
 533                    "GuestSuspendMode");
 534     }
 535
 536 out:
 537     if (local_err) {
 538         error_propagate(errp, local_err);
 539     }
 540 }
 541
 542 static DWORD WINAPI do_suspend(LPVOID opaque)
 543 {
 544     GuestSuspendMode *mode = opaque;
 545     DWORD ret = 0;
 546
 547     if (!SetSuspendState(*mode == GUEST_SUSPEND_MODE_DISK, TRUE, TRUE)) {
 548         slog("failed to suspend guest, %lu", GetLastError());
 549         ret = -1;
 550     }
 551     g_free(mode);
 552     return ret;
 553 }
 554
 555 void qmp_guest_suspend_disk(Error **errp)
 556 {
 557     Error *local_err = NULL;
 558     GuestSuspendMode *mode = g_malloc(sizeof(GuestSuspendMode));
 559
 560     *mode = GUEST_SUSPEND_MODE_DISK;
 561     check_suspend_mode(*mode, &local_err);
 562     acquire_privilege(SE_SHUTDOWN_NAME, &local_err);
 563     execute_async(do_suspend, mode, &local_err);
 564
 565     if (local_err) {
 566         error_propagate(errp, local_err);
 567         g_free(mode);
 568     }
 569 }
 570
 571 void qmp_guest_suspend_ram(Error **errp)
 572 {
 573     Error *local_err = NULL;
 574     GuestSuspendMode *mode = g_malloc(sizeof(GuestSuspendMode));
 575
 576     *mode = GUEST_SUSPEND_MODE_RAM;
 577     check_suspend_mode(*mode, &local_err);
 578     acquire_privilege(SE_SHUTDOWN_NAME, &local_err);
 579     execute_async(do_suspend, mode, &local_err);
 580
 581     if (local_err) {
 582         error_propagate(errp, local_err);
 583         g_free(mode);
 584     }
 585 }
 586
 587 void qmp_guest_suspend_hybrid(Error **errp)
 588 {
 589     error_setg(errp, QERR_UNSUPPORTED);
 590 }
 591
 592 GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp)
 593 {
 594     error_setg(errp, QERR_UNSUPPORTED);
 595     return NULL;
 596 }
 597
 598 int64_t qmp_guest_get_time(Error **errp)
 599 {
 600     SYSTEMTIME ts = {0};
 601     int64_t time_ns;
 602     FILETIME tf;
 603
 604     GetSystemTime(&ts);
 605     if (ts.wYear < 1601 || ts.wYear > 30827) {
 606         error_setg(errp, "Failed to get time");
 607         return -1;
 608     }
 609
 610     if (!SystemTimeToFileTime(&ts, &tf)) {
 611         error_setg(errp, "Failed to convert system time: %d", (int)GetLastError());
 612         return -1;
 613     }
 614
 615     time_ns = ((((int64_t)tf.dwHighDateTime << 32) | tf.dwLowDateTime)
 616                 - W32_FT_OFFSET) * 100;
 617
 618     return time_ns;
 619 }
 620
 621 void qmp_guest_set_time(bool has_time, int64_t time_ns, Error **errp)
 622 {
 623     Error *local_err = NULL;
 624     SYSTEMTIME ts;
 625     FILETIME tf;
 626     LONGLONG time;
 627
 628     if (!has_time) {
 629         /* Unfortunately, Windows libraries don't provide an easy way to access
 630          * RTC yet:
 631          *
 632          * https://msdn.microsoft.com/en-us/library/aa908981.aspx
 633          */
 634         error_setg(errp, "Time argument is required on this platform");
 635         return;
 636     }
 637
 638     /* Validate time passed by user. */
 639     if (time_ns < 0 || time_ns / 100 > INT64_MAX - W32_FT_OFFSET) {
 640         error_setg(errp, "Time %" PRId64 "is invalid", time_ns);
 641         return;
 642     }
 643
 644     time = time_ns / 100 + W32_FT_OFFSET;
 645
 646     tf.dwLowDateTime = (DWORD) time;
 647     tf.dwHighDateTime = (DWORD) (time >> 32);
 648
 649     if (!FileTimeToSystemTime(&tf, &ts)) {
 650         error_setg(errp, "Failed to convert system time %d",
 651                    (int)GetLastError());
 652         return;
 653     }
 654
 655     acquire_privilege(SE_SYSTEMTIME_NAME, &local_err);
 656     if (local_err) {
 657         error_propagate(errp, local_err);
 658         return;
 659     }
 660
 661     if (!SetSystemTime(&ts)) {
 662         error_setg(errp, "Failed to set time to guest: %d", (int)GetLastError());
 663         return;
 664     }
 665 }
 666
 667 GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp)
 668 {
 669     error_setg(errp, QERR_UNSUPPORTED);
 670     return NULL;
 671 }
 672
 673 int64_t qmp_guest_set_vcpus(GuestLogicalProcessorList *vcpus, Error **errp)
 674 {
 675     error_setg(errp, QERR_UNSUPPORTED);
 676     return -1;
 677 }
 678
 679 void qmp_guest_set_user_password(const char *username,
 680                                  const char *password,
 681                                  bool crypted,
 682                                  Error **errp)
 683 {
 684     error_setg(errp, QERR_UNSUPPORTED);
 685 }
 686
 687 GuestMemoryBlockList *qmp_guest_get_memory_blocks(Error **errp)
 688 {
 689     error_setg(errp, QERR_UNSUPPORTED);
 690     return NULL;
 691 }
 692
 693 GuestMemoryBlockResponseList *
 694 qmp_guest_set_memory_blocks(GuestMemoryBlockList *mem_blks, Error **errp)
 695 {
 696     error_setg(errp, QERR_UNSUPPORTED);
 697     return NULL;
 698 }
 699
 700 GuestMemoryBlockInfo *qmp_guest_get_memory_block_info(Error **errp)
 701 {
 702     error_setg(errp, QERR_UNSUPPORTED);
 703     return NULL;
 704 }
 705
 706 /* add unsupported commands to the blacklist */
 707 GList *ga_command_blacklist_init(GList *blacklist)
 708 {
 709     const char *list_unsupported[] = {
 710         "guest-suspend-hybrid", "guest-network-get-interfaces",
 711         "guest-get-vcpus", "guest-set-vcpus",
 712         "guest-set-user-password",
 713         "guest-get-memory-blocks", "guest-set-memory-blocks",
 714         "guest-get-memory-block-size",
 715         "guest-fsfreeze-freeze-list", "guest-get-fsinfo",
 716         "guest-fstrim", NULL};
 717     char **p = (char **)list_unsupported;
 718
 719     while (*p) {
 720         blacklist = g_list_append(blacklist, *p++);
 721     }
 722
 723     if (!vss_init(true)) {
 724         g_debug("vss_init failed, vss commands are going to be disabled");
 725         const char *list[] = {
 726             "guest-get-fsinfo", "guest-fsfreeze-status",
 727             "guest-fsfreeze-freeze", "guest-fsfreeze-thaw", NULL};
 728         p = (char **)list;
 729
 730         while (*p) {
 731             blacklist = g_list_append(blacklist, *p++);
 732         }
 733     }
 734
 735     return blacklist;
 736 }
 737
 738 /* register init/cleanup routines for stateful command groups */
 739 void ga_command_state_init(GAState *s, GACommandState *cs)
 740 {
 741     if (!vss_initialized()) {
 742         ga_command_state_add(cs, NULL, guest_fsfreeze_cleanup);
 743     }
 744     ga_command_state_add(cs, guest_file_init, NULL);
 745 }