xref: /openbmc/qemu/qga/commands-win32.c (revision b95690c9beaffd95edf91eb67829dc1e0a81e666)
1 /*
2  * QEMU Guest Agent win32-specific command implementations
3  *
4  * Copyright IBM Corp. 2012
5  *
6  * Authors:
7  *  Michael Roth      <mdroth@linux.vnet.ibm.com>
8  *  Gal Hammer        <ghammer@redhat.com>
9  *
10  * This work is licensed under the terms of the GNU GPL, version 2 or later.
11  * See the COPYING file in the top-level directory.
12  */
13 
14 #include <glib.h>
15 #include <wtypes.h>
16 #include <powrprof.h>
17 #include <stdio.h>
18 #include <string.h>
19 #include <winsock2.h>
20 #include <ws2tcpip.h>
21 #include <iptypes.h>
22 #include <iphlpapi.h>
23 #ifdef CONFIG_QGA_NTDDSCSI
24 #include <winioctl.h>
25 #include <ntddscsi.h>
26 #include <setupapi.h>
27 #include <initguid.h>
28 #endif
29 #include <lm.h>
30 
31 #include "qga/guest-agent-core.h"
32 #include "qga/vss-win32.h"
33 #include "qga-qmp-commands.h"
34 #include "qapi/qmp/qerror.h"
35 #include "qemu/queue.h"
36 #include "qemu/host-utils.h"
37 
38 #ifndef SHTDN_REASON_FLAG_PLANNED
39 #define SHTDN_REASON_FLAG_PLANNED 0x80000000
40 #endif
41 
42 /* multiple of 100 nanoseconds elapsed between windows baseline
43  *    (1/1/1601) and Unix Epoch (1/1/1970), accounting for leap years */
44 #define W32_FT_OFFSET (10000000ULL * 60 * 60 * 24 * \
45                        (365 * (1970 - 1601) +       \
46                         (1970 - 1601) / 4 - 3))
47 
48 #define INVALID_SET_FILE_POINTER ((DWORD)-1)
49 
50 typedef struct GuestFileHandle {
51     int64_t id;
52     HANDLE fh;
53     QTAILQ_ENTRY(GuestFileHandle) next;
54 } GuestFileHandle;
55 
56 static struct {
57     QTAILQ_HEAD(, GuestFileHandle) filehandles;
58 } guest_file_state = {
59     .filehandles = QTAILQ_HEAD_INITIALIZER(guest_file_state.filehandles),
60 };
61 
62 
63 typedef struct OpenFlags {
64     const char *forms;
65     DWORD desired_access;
66     DWORD creation_disposition;
67 } OpenFlags;
68 static OpenFlags guest_file_open_modes[] = {
69     {"r",   GENERIC_READ,               OPEN_EXISTING},
70     {"rb",  GENERIC_READ,               OPEN_EXISTING},
71     {"w",   GENERIC_WRITE,              CREATE_ALWAYS},
72     {"wb",  GENERIC_WRITE,              CREATE_ALWAYS},
73     {"a",   GENERIC_WRITE,              OPEN_ALWAYS  },
74     {"r+",  GENERIC_WRITE|GENERIC_READ, OPEN_EXISTING},
75     {"rb+", GENERIC_WRITE|GENERIC_READ, OPEN_EXISTING},
76     {"r+b", GENERIC_WRITE|GENERIC_READ, OPEN_EXISTING},
77     {"w+",  GENERIC_WRITE|GENERIC_READ, CREATE_ALWAYS},
78     {"wb+", GENERIC_WRITE|GENERIC_READ, CREATE_ALWAYS},
79     {"w+b", GENERIC_WRITE|GENERIC_READ, CREATE_ALWAYS},
80     {"a+",  GENERIC_WRITE|GENERIC_READ, OPEN_ALWAYS  },
81     {"ab+", GENERIC_WRITE|GENERIC_READ, OPEN_ALWAYS  },
82     {"a+b", GENERIC_WRITE|GENERIC_READ, OPEN_ALWAYS  }
83 };
84 
85 static OpenFlags *find_open_flag(const char *mode_str)
86 {
87     int mode;
88     Error **errp = NULL;
89 
90     for (mode = 0; mode < ARRAY_SIZE(guest_file_open_modes); ++mode) {
91         OpenFlags *flags = guest_file_open_modes + mode;
92 
93         if (strcmp(flags->forms, mode_str) == 0) {
94             return flags;
95         }
96     }
97 
98     error_setg(errp, "invalid file open mode '%s'", mode_str);
99     return NULL;
100 }
101 
102 static int64_t guest_file_handle_add(HANDLE fh, Error **errp)
103 {
104     GuestFileHandle *gfh;
105     int64_t handle;
106 
107     handle = ga_get_fd_handle(ga_state, errp);
108     if (handle < 0) {
109         return -1;
110     }
111     gfh = g_new0(GuestFileHandle, 1);
112     gfh->id = handle;
113     gfh->fh = fh;
114     QTAILQ_INSERT_TAIL(&guest_file_state.filehandles, gfh, next);
115 
116     return handle;
117 }
118 
119 static GuestFileHandle *guest_file_handle_find(int64_t id, Error **errp)
120 {
121     GuestFileHandle *gfh;
122     QTAILQ_FOREACH(gfh, &guest_file_state.filehandles, next) {
123         if (gfh->id == id) {
124             return gfh;
125         }
126     }
127     error_setg(errp, "handle '%" PRId64 "' has not been found", id);
128     return NULL;
129 }
130 
131 static void handle_set_nonblocking(HANDLE fh)
132 {
133     DWORD file_type, pipe_state;
134     file_type = GetFileType(fh);
135     if (file_type != FILE_TYPE_PIPE) {
136         return;
137     }
138     /* If file_type == FILE_TYPE_PIPE, according to MSDN
139      * the specified file is socket or named pipe */
140     if (!GetNamedPipeHandleState(fh, &pipe_state, NULL,
141                                  NULL, NULL, NULL, 0)) {
142         return;
143     }
144     /* The fd is named pipe fd */
145     if (pipe_state & PIPE_NOWAIT) {
146         return;
147     }
148 
149     pipe_state |= PIPE_NOWAIT;
150     SetNamedPipeHandleState(fh, &pipe_state, NULL, NULL);
151 }
152 
153 int64_t qmp_guest_file_open(const char *path, bool has_mode,
154                             const char *mode, Error **errp)
155 {
156     int64_t fd;
157     HANDLE fh;
158     HANDLE templ_file = NULL;
159     DWORD share_mode = FILE_SHARE_READ;
160     DWORD flags_and_attr = FILE_ATTRIBUTE_NORMAL;
161     LPSECURITY_ATTRIBUTES sa_attr = NULL;
162     OpenFlags *guest_flags;
163 
164     if (!has_mode) {
165         mode = "r";
166     }
167     slog("guest-file-open called, filepath: %s, mode: %s", path, mode);
168     guest_flags = find_open_flag(mode);
169     if (guest_flags == NULL) {
170         error_setg(errp, "invalid file open mode");
171         return -1;
172     }
173 
174     fh = CreateFile(path, guest_flags->desired_access, share_mode, sa_attr,
175                     guest_flags->creation_disposition, flags_and_attr,
176                     templ_file);
177     if (fh == INVALID_HANDLE_VALUE) {
178         error_setg_win32(errp, GetLastError(), "failed to open file '%s'",
179                          path);
180         return -1;
181     }
182 
183     /* set fd non-blocking to avoid common use cases (like reading from a
184      * named pipe) from hanging the agent
185      */
186     handle_set_nonblocking(fh);
187 
188     fd = guest_file_handle_add(fh, errp);
189     if (fd < 0) {
190         CloseHandle(fh);
191         error_setg(errp, "failed to add handle to qmp handle table");
192         return -1;
193     }
194 
195     slog("guest-file-open, handle: % " PRId64, fd);
196     return fd;
197 }
198 
199 void qmp_guest_file_close(int64_t handle, Error **errp)
200 {
201     bool ret;
202     GuestFileHandle *gfh = guest_file_handle_find(handle, errp);
203     slog("guest-file-close called, handle: %" PRId64, handle);
204     if (gfh == NULL) {
205         return;
206     }
207     ret = CloseHandle(gfh->fh);
208     if (!ret) {
209         error_setg_win32(errp, GetLastError(), "failed close handle");
210         return;
211     }
212 
213     QTAILQ_REMOVE(&guest_file_state.filehandles, gfh, next);
214     g_free(gfh);
215 }
216 
217 static void acquire_privilege(const char *name, Error **errp)
218 {
219     HANDLE token = NULL;
220     TOKEN_PRIVILEGES priv;
221     Error *local_err = NULL;
222 
223     if (OpenProcessToken(GetCurrentProcess(),
224         TOKEN_ADJUST_PRIVILEGES|TOKEN_QUERY, &token))
225     {
226         if (!LookupPrivilegeValue(NULL, name, &priv.Privileges[0].Luid)) {
227             error_setg(&local_err, QERR_QGA_COMMAND_FAILED,
228                        "no luid for requested privilege");
229             goto out;
230         }
231 
232         priv.PrivilegeCount = 1;
233         priv.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
234 
235         if (!AdjustTokenPrivileges(token, FALSE, &priv, 0, NULL, 0)) {
236             error_setg(&local_err, QERR_QGA_COMMAND_FAILED,
237                        "unable to acquire requested privilege");
238             goto out;
239         }
240 
241     } else {
242         error_setg(&local_err, QERR_QGA_COMMAND_FAILED,
243                    "failed to open privilege token");
244     }
245 
246 out:
247     if (token) {
248         CloseHandle(token);
249     }
250     if (local_err) {
251         error_propagate(errp, local_err);
252     }
253 }
254 
255 static void execute_async(DWORD WINAPI (*func)(LPVOID), LPVOID opaque,
256                           Error **errp)
257 {
258     Error *local_err = NULL;
259 
260     HANDLE thread = CreateThread(NULL, 0, func, opaque, 0, NULL);
261     if (!thread) {
262         error_setg(&local_err, QERR_QGA_COMMAND_FAILED,
263                    "failed to dispatch asynchronous command");
264         error_propagate(errp, local_err);
265     }
266 }
267 
268 void qmp_guest_shutdown(bool has_mode, const char *mode, Error **errp)
269 {
270     Error *local_err = NULL;
271     UINT shutdown_flag = EWX_FORCE;
272 
273     slog("guest-shutdown called, mode: %s", mode);
274 
275     if (!has_mode || strcmp(mode, "powerdown") == 0) {
276         shutdown_flag |= EWX_POWEROFF;
277     } else if (strcmp(mode, "halt") == 0) {
278         shutdown_flag |= EWX_SHUTDOWN;
279     } else if (strcmp(mode, "reboot") == 0) {
280         shutdown_flag |= EWX_REBOOT;
281     } else {
282         error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "mode",
283                    "halt|powerdown|reboot");
284         return;
285     }
286 
287     /* Request a shutdown privilege, but try to shut down the system
288        anyway. */
289     acquire_privilege(SE_SHUTDOWN_NAME, &local_err);
290     if (local_err) {
291         error_propagate(errp, local_err);
292         return;
293     }
294 
295     if (!ExitWindowsEx(shutdown_flag, SHTDN_REASON_FLAG_PLANNED)) {
296         slog("guest-shutdown failed: %lu", GetLastError());
297         error_setg(errp, QERR_UNDEFINED_ERROR);
298     }
299 }
300 
301 GuestFileRead *qmp_guest_file_read(int64_t handle, bool has_count,
302                                    int64_t count, Error **errp)
303 {
304     GuestFileRead *read_data = NULL;
305     guchar *buf;
306     HANDLE fh;
307     bool is_ok;
308     DWORD read_count;
309     GuestFileHandle *gfh = guest_file_handle_find(handle, errp);
310 
311     if (!gfh) {
312         return NULL;
313     }
314     if (!has_count) {
315         count = QGA_READ_COUNT_DEFAULT;
316     } else if (count < 0) {
317         error_setg(errp, "value '%" PRId64
318                    "' is invalid for argument count", count);
319         return NULL;
320     }
321 
322     fh = gfh->fh;
323     buf = g_malloc0(count+1);
324     is_ok = ReadFile(fh, buf, count, &read_count, NULL);
325     if (!is_ok) {
326         error_setg_win32(errp, GetLastError(), "failed to read file");
327         slog("guest-file-read failed, handle %" PRId64, handle);
328     } else {
329         buf[read_count] = 0;
330         read_data = g_new0(GuestFileRead, 1);
331         read_data->count = (size_t)read_count;
332         read_data->eof = read_count == 0;
333 
334         if (read_count != 0) {
335             read_data->buf_b64 = g_base64_encode(buf, read_count);
336         }
337     }
338     g_free(buf);
339 
340     return read_data;
341 }
342 
343 GuestFileWrite *qmp_guest_file_write(int64_t handle, const char *buf_b64,
344                                      bool has_count, int64_t count,
345                                      Error **errp)
346 {
347     GuestFileWrite *write_data = NULL;
348     guchar *buf;
349     gsize buf_len;
350     bool is_ok;
351     DWORD write_count;
352     GuestFileHandle *gfh = guest_file_handle_find(handle, errp);
353     HANDLE fh;
354 
355     if (!gfh) {
356         return NULL;
357     }
358     fh = gfh->fh;
359     buf = g_base64_decode(buf_b64, &buf_len);
360 
361     if (!has_count) {
362         count = buf_len;
363     } else if (count < 0 || count > buf_len) {
364         error_setg(errp, "value '%" PRId64
365                    "' is invalid for argument count", count);
366         goto done;
367     }
368 
369     is_ok = WriteFile(fh, buf, count, &write_count, NULL);
370     if (!is_ok) {
371         error_setg_win32(errp, GetLastError(), "failed to write to file");
372         slog("guest-file-write-failed, handle: %" PRId64, handle);
373     } else {
374         write_data = g_new0(GuestFileWrite, 1);
375         write_data->count = (size_t) write_count;
376     }
377 
378 done:
379     g_free(buf);
380     return write_data;
381 }
382 
383 GuestFileSeek *qmp_guest_file_seek(int64_t handle, int64_t offset,
384                                    int64_t whence, Error **errp)
385 {
386     GuestFileHandle *gfh;
387     GuestFileSeek *seek_data;
388     HANDLE fh;
389     LARGE_INTEGER new_pos, off_pos;
390     off_pos.QuadPart = offset;
391     BOOL res;
392     gfh = guest_file_handle_find(handle, errp);
393     if (!gfh) {
394         return NULL;
395     }
396 
397     fh = gfh->fh;
398     res = SetFilePointerEx(fh, off_pos, &new_pos, whence);
399     if (!res) {
400         error_setg_win32(errp, GetLastError(), "failed to seek file");
401         return NULL;
402     }
403     seek_data = g_new0(GuestFileSeek, 1);
404     seek_data->position = new_pos.QuadPart;
405     return seek_data;
406 }
407 
408 void qmp_guest_file_flush(int64_t handle, Error **errp)
409 {
410     HANDLE fh;
411     GuestFileHandle *gfh = guest_file_handle_find(handle, errp);
412     if (!gfh) {
413         return;
414     }
415 
416     fh = gfh->fh;
417     if (!FlushFileBuffers(fh)) {
418         error_setg_win32(errp, GetLastError(), "failed to flush file");
419     }
420 }
421 
422 #ifdef CONFIG_QGA_NTDDSCSI
423 
424 static STORAGE_BUS_TYPE win2qemu[] = {
425     [BusTypeUnknown] = GUEST_DISK_BUS_TYPE_UNKNOWN,
426     [BusTypeScsi] = GUEST_DISK_BUS_TYPE_SCSI,
427     [BusTypeAtapi] = GUEST_DISK_BUS_TYPE_IDE,
428     [BusTypeAta] = GUEST_DISK_BUS_TYPE_IDE,
429     [BusType1394] = GUEST_DISK_BUS_TYPE_IEEE1394,
430     [BusTypeSsa] = GUEST_DISK_BUS_TYPE_SSA,
431     [BusTypeFibre] = GUEST_DISK_BUS_TYPE_SSA,
432     [BusTypeUsb] = GUEST_DISK_BUS_TYPE_USB,
433     [BusTypeRAID] = GUEST_DISK_BUS_TYPE_RAID,
434 #if (_WIN32_WINNT >= 0x0600)
435     [BusTypeiScsi] = GUEST_DISK_BUS_TYPE_ISCSI,
436     [BusTypeSas] = GUEST_DISK_BUS_TYPE_SAS,
437     [BusTypeSata] = GUEST_DISK_BUS_TYPE_SATA,
438     [BusTypeSd] =  GUEST_DISK_BUS_TYPE_SD,
439     [BusTypeMmc] = GUEST_DISK_BUS_TYPE_MMC,
440 #endif
441 #if (_WIN32_WINNT >= 0x0601)
442     [BusTypeVirtual] = GUEST_DISK_BUS_TYPE_VIRTUAL,
443     [BusTypeFileBackedVirtual] = GUEST_DISK_BUS_TYPE_FILE_BACKED_VIRTUAL,
444 #endif
445 };
446 
447 static GuestDiskBusType find_bus_type(STORAGE_BUS_TYPE bus)
448 {
449     if (bus > ARRAY_SIZE(win2qemu) || (int)bus < 0) {
450         return GUEST_DISK_BUS_TYPE_UNKNOWN;
451     }
452     return win2qemu[(int)bus];
453 }
454 
455 DEFINE_GUID(GUID_DEVINTERFACE_VOLUME,
456         0x53f5630dL, 0xb6bf, 0x11d0, 0x94, 0xf2,
457         0x00, 0xa0, 0xc9, 0x1e, 0xfb, 0x8b);
458 
459 static GuestPCIAddress *get_pci_info(char *guid, Error **errp)
460 {
461     HDEVINFO dev_info;
462     SP_DEVINFO_DATA dev_info_data;
463     DWORD size = 0;
464     int i;
465     char dev_name[MAX_PATH];
466     char *buffer = NULL;
467     GuestPCIAddress *pci = NULL;
468     char *name = g_strdup(&guid[4]);
469 
470     if (!QueryDosDevice(name, dev_name, ARRAY_SIZE(dev_name))) {
471         error_setg_win32(errp, GetLastError(), "failed to get dos device name");
472         goto out;
473     }
474 
475     dev_info = SetupDiGetClassDevs(&GUID_DEVINTERFACE_VOLUME, 0, 0,
476                                    DIGCF_PRESENT | DIGCF_DEVICEINTERFACE);
477     if (dev_info == INVALID_HANDLE_VALUE) {
478         error_setg_win32(errp, GetLastError(), "failed to get devices tree");
479         goto out;
480     }
481 
482     dev_info_data.cbSize = sizeof(SP_DEVINFO_DATA);
483     for (i = 0; SetupDiEnumDeviceInfo(dev_info, i, &dev_info_data); i++) {
484         DWORD addr, bus, slot, func, dev, data, size2;
485         while (!SetupDiGetDeviceRegistryProperty(dev_info, &dev_info_data,
486                                             SPDRP_PHYSICAL_DEVICE_OBJECT_NAME,
487                                             &data, (PBYTE)buffer, size,
488                                             &size2)) {
489             size = MAX(size, size2);
490             if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) {
491                 g_free(buffer);
492                 /* Double the size to avoid problems on
493                  * W2k MBCS systems per KB 888609.
494                  * https://support.microsoft.com/en-us/kb/259695 */
495                 buffer = g_malloc(size * 2);
496             } else {
497                 error_setg_win32(errp, GetLastError(),
498                         "failed to get device name");
499                 goto out;
500             }
501         }
502 
503         if (g_strcmp0(buffer, dev_name)) {
504             continue;
505         }
506 
507         /* There is no need to allocate buffer in the next functions. The size
508          * is known and ULONG according to
509          * https://support.microsoft.com/en-us/kb/253232
510          * https://msdn.microsoft.com/en-us/library/windows/hardware/ff543095(v=vs.85).aspx
511          */
512         if (!SetupDiGetDeviceRegistryProperty(dev_info, &dev_info_data,
513                    SPDRP_BUSNUMBER, &data, (PBYTE)&bus, size, NULL)) {
514             break;
515         }
516 
517         /* The function retrieves the device's address. This value will be
518          * transformed into device function and number */
519         if (!SetupDiGetDeviceRegistryProperty(dev_info, &dev_info_data,
520                    SPDRP_ADDRESS, &data, (PBYTE)&addr, size, NULL)) {
521             break;
522         }
523 
524         /* This call returns UINumber of DEVICE_CAPABILITIES structure.
525          * This number is typically a user-perceived slot number. */
526         if (!SetupDiGetDeviceRegistryProperty(dev_info, &dev_info_data,
527                    SPDRP_UI_NUMBER, &data, (PBYTE)&slot, size, NULL)) {
528             break;
529         }
530 
531         /* SetupApi gives us the same information as driver with
532          * IoGetDeviceProperty. According to Microsoft
533          * https://support.microsoft.com/en-us/kb/253232
534          * FunctionNumber = (USHORT)((propertyAddress) & 0x0000FFFF);
535          * DeviceNumber = (USHORT)(((propertyAddress) >> 16) & 0x0000FFFF);
536          * SPDRP_ADDRESS is propertyAddress, so we do the same.*/
537 
538         func = addr & 0x0000FFFF;
539         dev = (addr >> 16) & 0x0000FFFF;
540         pci = g_malloc0(sizeof(*pci));
541         pci->domain = dev;
542         pci->slot = slot;
543         pci->function = func;
544         pci->bus = bus;
545         break;
546     }
547 out:
548     g_free(buffer);
549     g_free(name);
550     return pci;
551 }
552 
553 static int get_disk_bus_type(HANDLE vol_h, Error **errp)
554 {
555     STORAGE_PROPERTY_QUERY query;
556     STORAGE_DEVICE_DESCRIPTOR *dev_desc, buf;
557     DWORD received;
558 
559     dev_desc = &buf;
560     dev_desc->Size = sizeof(buf);
561     query.PropertyId = StorageDeviceProperty;
562     query.QueryType = PropertyStandardQuery;
563 
564     if (!DeviceIoControl(vol_h, IOCTL_STORAGE_QUERY_PROPERTY, &query,
565                          sizeof(STORAGE_PROPERTY_QUERY), dev_desc,
566                          dev_desc->Size, &received, NULL)) {
567         error_setg_win32(errp, GetLastError(), "failed to get bus type");
568         return -1;
569     }
570 
571     return dev_desc->BusType;
572 }
573 
574 /* VSS provider works with volumes, thus there is no difference if
575  * the volume consist of spanned disks. Info about the first disk in the
576  * volume is returned for the spanned disk group (LVM) */
577 static GuestDiskAddressList *build_guest_disk_info(char *guid, Error **errp)
578 {
579     GuestDiskAddressList *list = NULL;
580     GuestDiskAddress *disk;
581     SCSI_ADDRESS addr, *scsi_ad;
582     DWORD len;
583     int bus;
584     HANDLE vol_h;
585 
586     scsi_ad = &addr;
587     char *name = g_strndup(guid, strlen(guid)-1);
588 
589     vol_h = CreateFile(name, 0, FILE_SHARE_READ, NULL, OPEN_EXISTING,
590                        0, NULL);
591     if (vol_h == INVALID_HANDLE_VALUE) {
592         error_setg_win32(errp, GetLastError(), "failed to open volume");
593         goto out_free;
594     }
595 
596     bus = get_disk_bus_type(vol_h, errp);
597     if (bus < 0) {
598         goto out_close;
599     }
600 
601     disk = g_malloc0(sizeof(*disk));
602     disk->bus_type = find_bus_type(bus);
603     if (bus == BusTypeScsi || bus == BusTypeAta || bus == BusTypeRAID
604 #if (_WIN32_WINNT >= 0x0600)
605             /* This bus type is not supported before Windows Server 2003 SP1 */
606             || bus == BusTypeSas
607 #endif
608         ) {
609         /* We are able to use the same ioctls for different bus types
610          * according to Microsoft docs
611          * https://technet.microsoft.com/en-us/library/ee851589(v=ws.10).aspx */
612         if (DeviceIoControl(vol_h, IOCTL_SCSI_GET_ADDRESS, NULL, 0, scsi_ad,
613                             sizeof(SCSI_ADDRESS), &len, NULL)) {
614             disk->unit = addr.Lun;
615             disk->target = addr.TargetId;
616             disk->bus = addr.PathId;
617             disk->pci_controller = get_pci_info(name, errp);
618         }
619         /* We do not set error in this case, because we still have enough
620          * information about volume. */
621     } else {
622          disk->pci_controller = NULL;
623     }
624 
625     list = g_malloc0(sizeof(*list));
626     list->value = disk;
627     list->next = NULL;
628 out_close:
629     CloseHandle(vol_h);
630 out_free:
631     g_free(name);
632     return list;
633 }
634 
635 #else
636 
637 static GuestDiskAddressList *build_guest_disk_info(char *guid, Error **errp)
638 {
639     return NULL;
640 }
641 
642 #endif /* CONFIG_QGA_NTDDSCSI */
643 
644 static GuestFilesystemInfo *build_guest_fsinfo(char *guid, Error **errp)
645 {
646     DWORD info_size;
647     char mnt, *mnt_point;
648     char fs_name[32];
649     char vol_info[MAX_PATH+1];
650     size_t len;
651     GuestFilesystemInfo *fs = NULL;
652 
653     GetVolumePathNamesForVolumeName(guid, (LPCH)&mnt, 0, &info_size);
654     if (GetLastError() != ERROR_MORE_DATA) {
655         error_setg_win32(errp, GetLastError(), "failed to get volume name");
656         return NULL;
657     }
658 
659     mnt_point = g_malloc(info_size + 1);
660     if (!GetVolumePathNamesForVolumeName(guid, mnt_point, info_size,
661                                          &info_size)) {
662         error_setg_win32(errp, GetLastError(), "failed to get volume name");
663         goto free;
664     }
665 
666     len = strlen(mnt_point);
667     mnt_point[len] = '\\';
668     mnt_point[len+1] = 0;
669     if (!GetVolumeInformation(mnt_point, vol_info, sizeof(vol_info), NULL, NULL,
670                               NULL, (LPSTR)&fs_name, sizeof(fs_name))) {
671         if (GetLastError() != ERROR_NOT_READY) {
672             error_setg_win32(errp, GetLastError(), "failed to get volume info");
673         }
674         goto free;
675     }
676 
677     fs_name[sizeof(fs_name) - 1] = 0;
678     fs = g_malloc(sizeof(*fs));
679     fs->name = g_strdup(guid);
680     if (len == 0) {
681         fs->mountpoint = g_strdup("System Reserved");
682     } else {
683         fs->mountpoint = g_strndup(mnt_point, len);
684     }
685     fs->type = g_strdup(fs_name);
686     fs->disk = build_guest_disk_info(guid, errp);
687 free:
688     g_free(mnt_point);
689     return fs;
690 }
691 
692 GuestFilesystemInfoList *qmp_guest_get_fsinfo(Error **errp)
693 {
694     HANDLE vol_h;
695     GuestFilesystemInfoList *new, *ret = NULL;
696     char guid[256];
697 
698     vol_h = FindFirstVolume(guid, sizeof(guid));
699     if (vol_h == INVALID_HANDLE_VALUE) {
700         error_setg_win32(errp, GetLastError(), "failed to find any volume");
701         return NULL;
702     }
703 
704     do {
705         GuestFilesystemInfo *info = build_guest_fsinfo(guid, errp);
706         if (info == NULL) {
707             continue;
708         }
709         new = g_malloc(sizeof(*ret));
710         new->value = info;
711         new->next = ret;
712         ret = new;
713     } while (FindNextVolume(vol_h, guid, sizeof(guid)));
714 
715     if (GetLastError() != ERROR_NO_MORE_FILES) {
716         error_setg_win32(errp, GetLastError(), "failed to find next volume");
717     }
718 
719     FindVolumeClose(vol_h);
720     return ret;
721 }
722 
723 /*
724  * Return status of freeze/thaw
725  */
726 GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **errp)
727 {
728     if (!vss_initialized()) {
729         error_setg(errp, QERR_UNSUPPORTED);
730         return 0;
731     }
732 
733     if (ga_is_frozen(ga_state)) {
734         return GUEST_FSFREEZE_STATUS_FROZEN;
735     }
736 
737     return GUEST_FSFREEZE_STATUS_THAWED;
738 }
739 
740 /*
741  * Freeze local file systems using Volume Shadow-copy Service.
742  * The frozen state is limited for up to 10 seconds by VSS.
743  */
744 int64_t qmp_guest_fsfreeze_freeze(Error **errp)
745 {
746     int i;
747     Error *local_err = NULL;
748 
749     if (!vss_initialized()) {
750         error_setg(errp, QERR_UNSUPPORTED);
751         return 0;
752     }
753 
754     slog("guest-fsfreeze called");
755 
756     /* cannot risk guest agent blocking itself on a write in this state */
757     ga_set_frozen(ga_state);
758 
759     qga_vss_fsfreeze(&i, &local_err, true);
760     if (local_err) {
761         error_propagate(errp, local_err);
762         goto error;
763     }
764 
765     return i;
766 
767 error:
768     local_err = NULL;
769     qmp_guest_fsfreeze_thaw(&local_err);
770     if (local_err) {
771         g_debug("cleanup thaw: %s", error_get_pretty(local_err));
772         error_free(local_err);
773     }
774     return 0;
775 }
776 
777 int64_t qmp_guest_fsfreeze_freeze_list(bool has_mountpoints,
778                                        strList *mountpoints,
779                                        Error **errp)
780 {
781     error_setg(errp, QERR_UNSUPPORTED);
782 
783     return 0;
784 }
785 
786 /*
787  * Thaw local file systems using Volume Shadow-copy Service.
788  */
789 int64_t qmp_guest_fsfreeze_thaw(Error **errp)
790 {
791     int i;
792 
793     if (!vss_initialized()) {
794         error_setg(errp, QERR_UNSUPPORTED);
795         return 0;
796     }
797 
798     qga_vss_fsfreeze(&i, errp, false);
799 
800     ga_unset_frozen(ga_state);
801     return i;
802 }
803 
804 static void guest_fsfreeze_cleanup(void)
805 {
806     Error *err = NULL;
807 
808     if (!vss_initialized()) {
809         return;
810     }
811 
812     if (ga_is_frozen(ga_state) == GUEST_FSFREEZE_STATUS_FROZEN) {
813         qmp_guest_fsfreeze_thaw(&err);
814         if (err) {
815             slog("failed to clean up frozen filesystems: %s",
816                  error_get_pretty(err));
817             error_free(err);
818         }
819     }
820 
821     vss_deinit(true);
822 }
823 
824 /*
825  * Walk list of mounted file systems in the guest, and discard unused
826  * areas.
827  */
828 GuestFilesystemTrimResponse *
829 qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp)
830 {
831     error_setg(errp, QERR_UNSUPPORTED);
832     return NULL;
833 }
834 
835 typedef enum {
836     GUEST_SUSPEND_MODE_DISK,
837     GUEST_SUSPEND_MODE_RAM
838 } GuestSuspendMode;
839 
840 static void check_suspend_mode(GuestSuspendMode mode, Error **errp)
841 {
842     SYSTEM_POWER_CAPABILITIES sys_pwr_caps;
843     Error *local_err = NULL;
844 
845     ZeroMemory(&sys_pwr_caps, sizeof(sys_pwr_caps));
846     if (!GetPwrCapabilities(&sys_pwr_caps)) {
847         error_setg(&local_err, QERR_QGA_COMMAND_FAILED,
848                    "failed to determine guest suspend capabilities");
849         goto out;
850     }
851 
852     switch (mode) {
853     case GUEST_SUSPEND_MODE_DISK:
854         if (!sys_pwr_caps.SystemS4) {
855             error_setg(&local_err, QERR_QGA_COMMAND_FAILED,
856                        "suspend-to-disk not supported by OS");
857         }
858         break;
859     case GUEST_SUSPEND_MODE_RAM:
860         if (!sys_pwr_caps.SystemS3) {
861             error_setg(&local_err, QERR_QGA_COMMAND_FAILED,
862                        "suspend-to-ram not supported by OS");
863         }
864         break;
865     default:
866         error_setg(&local_err, QERR_INVALID_PARAMETER_VALUE, "mode",
867                    "GuestSuspendMode");
868     }
869 
870 out:
871     if (local_err) {
872         error_propagate(errp, local_err);
873     }
874 }
875 
876 static DWORD WINAPI do_suspend(LPVOID opaque)
877 {
878     GuestSuspendMode *mode = opaque;
879     DWORD ret = 0;
880 
881     if (!SetSuspendState(*mode == GUEST_SUSPEND_MODE_DISK, TRUE, TRUE)) {
882         slog("failed to suspend guest, %lu", GetLastError());
883         ret = -1;
884     }
885     g_free(mode);
886     return ret;
887 }
888 
889 void qmp_guest_suspend_disk(Error **errp)
890 {
891     Error *local_err = NULL;
892     GuestSuspendMode *mode = g_new(GuestSuspendMode, 1);
893 
894     *mode = GUEST_SUSPEND_MODE_DISK;
895     check_suspend_mode(*mode, &local_err);
896     acquire_privilege(SE_SHUTDOWN_NAME, &local_err);
897     execute_async(do_suspend, mode, &local_err);
898 
899     if (local_err) {
900         error_propagate(errp, local_err);
901         g_free(mode);
902     }
903 }
904 
905 void qmp_guest_suspend_ram(Error **errp)
906 {
907     Error *local_err = NULL;
908     GuestSuspendMode *mode = g_new(GuestSuspendMode, 1);
909 
910     *mode = GUEST_SUSPEND_MODE_RAM;
911     check_suspend_mode(*mode, &local_err);
912     acquire_privilege(SE_SHUTDOWN_NAME, &local_err);
913     execute_async(do_suspend, mode, &local_err);
914 
915     if (local_err) {
916         error_propagate(errp, local_err);
917         g_free(mode);
918     }
919 }
920 
921 void qmp_guest_suspend_hybrid(Error **errp)
922 {
923     error_setg(errp, QERR_UNSUPPORTED);
924 }
925 
926 static IP_ADAPTER_ADDRESSES *guest_get_adapters_addresses(Error **errp)
927 {
928     IP_ADAPTER_ADDRESSES *adptr_addrs = NULL;
929     ULONG adptr_addrs_len = 0;
930     DWORD ret;
931 
932     /* Call the first time to get the adptr_addrs_len. */
933     GetAdaptersAddresses(AF_UNSPEC, GAA_FLAG_INCLUDE_PREFIX,
934                          NULL, adptr_addrs, &adptr_addrs_len);
935 
936     adptr_addrs = g_malloc(adptr_addrs_len);
937     ret = GetAdaptersAddresses(AF_UNSPEC, GAA_FLAG_INCLUDE_PREFIX,
938                                NULL, adptr_addrs, &adptr_addrs_len);
939     if (ret != ERROR_SUCCESS) {
940         error_setg_win32(errp, ret, "failed to get adapters addresses");
941         g_free(adptr_addrs);
942         adptr_addrs = NULL;
943     }
944     return adptr_addrs;
945 }
946 
947 static char *guest_wctomb_dup(WCHAR *wstr)
948 {
949     char *str;
950     size_t i;
951 
952     i = wcslen(wstr) + 1;
953     str = g_malloc(i);
954     WideCharToMultiByte(CP_ACP, WC_COMPOSITECHECK,
955                         wstr, -1, str, i, NULL, NULL);
956     return str;
957 }
958 
959 static char *guest_addr_to_str(IP_ADAPTER_UNICAST_ADDRESS *ip_addr,
960                                Error **errp)
961 {
962     char addr_str[INET6_ADDRSTRLEN + INET_ADDRSTRLEN];
963     DWORD len;
964     int ret;
965 
966     if (ip_addr->Address.lpSockaddr->sa_family == AF_INET ||
967             ip_addr->Address.lpSockaddr->sa_family == AF_INET6) {
968         len = sizeof(addr_str);
969         ret = WSAAddressToString(ip_addr->Address.lpSockaddr,
970                                  ip_addr->Address.iSockaddrLength,
971                                  NULL,
972                                  addr_str,
973                                  &len);
974         if (ret != 0) {
975             error_setg_win32(errp, WSAGetLastError(),
976                 "failed address presentation form conversion");
977             return NULL;
978         }
979         return g_strdup(addr_str);
980     }
981     return NULL;
982 }
983 
984 #if (_WIN32_WINNT >= 0x0600)
985 static int64_t guest_ip_prefix(IP_ADAPTER_UNICAST_ADDRESS *ip_addr)
986 {
987     /* For Windows Vista/2008 and newer, use the OnLinkPrefixLength
988      * field to obtain the prefix.
989      */
990     return ip_addr->OnLinkPrefixLength;
991 }
992 #else
993 /* When using the Windows XP and 2003 build environment, do the best we can to
994  * figure out the prefix.
995  */
996 static IP_ADAPTER_INFO *guest_get_adapters_info(void)
997 {
998     IP_ADAPTER_INFO *adptr_info = NULL;
999     ULONG adptr_info_len = 0;
1000     DWORD ret;
1001 
1002     /* Call the first time to get the adptr_info_len. */
1003     GetAdaptersInfo(adptr_info, &adptr_info_len);
1004 
1005     adptr_info = g_malloc(adptr_info_len);
1006     ret = GetAdaptersInfo(adptr_info, &adptr_info_len);
1007     if (ret != ERROR_SUCCESS) {
1008         g_free(adptr_info);
1009         adptr_info = NULL;
1010     }
1011     return adptr_info;
1012 }
1013 
1014 static int64_t guest_ip_prefix(IP_ADAPTER_UNICAST_ADDRESS *ip_addr)
1015 {
1016     int64_t prefix = -1; /* Use for AF_INET6 and unknown/undetermined values. */
1017     IP_ADAPTER_INFO *adptr_info, *info;
1018     IP_ADDR_STRING *ip;
1019     struct in_addr *p;
1020 
1021     if (ip_addr->Address.lpSockaddr->sa_family != AF_INET) {
1022         return prefix;
1023     }
1024     adptr_info = guest_get_adapters_info();
1025     if (adptr_info == NULL) {
1026         return prefix;
1027     }
1028 
1029     /* Match up the passed in ip_addr with one found in adaptr_info.
1030      * The matching one in adptr_info will have the netmask.
1031      */
1032     p = &((struct sockaddr_in *)ip_addr->Address.lpSockaddr)->sin_addr;
1033     for (info = adptr_info; info; info = info->Next) {
1034         for (ip = &info->IpAddressList; ip; ip = ip->Next) {
1035             if (p->S_un.S_addr == inet_addr(ip->IpAddress.String)) {
1036                 prefix = ctpop32(inet_addr(ip->IpMask.String));
1037                 goto out;
1038             }
1039         }
1040     }
1041 out:
1042     g_free(adptr_info);
1043     return prefix;
1044 }
1045 #endif
1046 
1047 GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp)
1048 {
1049     IP_ADAPTER_ADDRESSES *adptr_addrs, *addr;
1050     IP_ADAPTER_UNICAST_ADDRESS *ip_addr = NULL;
1051     GuestNetworkInterfaceList *head = NULL, *cur_item = NULL;
1052     GuestIpAddressList *head_addr, *cur_addr;
1053     GuestNetworkInterfaceList *info;
1054     GuestIpAddressList *address_item = NULL;
1055     unsigned char *mac_addr;
1056     char *addr_str;
1057     WORD wsa_version;
1058     WSADATA wsa_data;
1059     int ret;
1060 
1061     adptr_addrs = guest_get_adapters_addresses(errp);
1062     if (adptr_addrs == NULL) {
1063         return NULL;
1064     }
1065 
1066     /* Make WSA APIs available. */
1067     wsa_version = MAKEWORD(2, 2);
1068     ret = WSAStartup(wsa_version, &wsa_data);
1069     if (ret != 0) {
1070         error_setg_win32(errp, ret, "failed socket startup");
1071         goto out;
1072     }
1073 
1074     for (addr = adptr_addrs; addr; addr = addr->Next) {
1075         info = g_malloc0(sizeof(*info));
1076 
1077         if (cur_item == NULL) {
1078             head = cur_item = info;
1079         } else {
1080             cur_item->next = info;
1081             cur_item = info;
1082         }
1083 
1084         info->value = g_malloc0(sizeof(*info->value));
1085         info->value->name = guest_wctomb_dup(addr->FriendlyName);
1086 
1087         if (addr->PhysicalAddressLength != 0) {
1088             mac_addr = addr->PhysicalAddress;
1089 
1090             info->value->hardware_address =
1091                 g_strdup_printf("%02x:%02x:%02x:%02x:%02x:%02x",
1092                                 (int) mac_addr[0], (int) mac_addr[1],
1093                                 (int) mac_addr[2], (int) mac_addr[3],
1094                                 (int) mac_addr[4], (int) mac_addr[5]);
1095 
1096             info->value->has_hardware_address = true;
1097         }
1098 
1099         head_addr = NULL;
1100         cur_addr = NULL;
1101         for (ip_addr = addr->FirstUnicastAddress;
1102                 ip_addr;
1103                 ip_addr = ip_addr->Next) {
1104             addr_str = guest_addr_to_str(ip_addr, errp);
1105             if (addr_str == NULL) {
1106                 continue;
1107             }
1108 
1109             address_item = g_malloc0(sizeof(*address_item));
1110 
1111             if (!cur_addr) {
1112                 head_addr = cur_addr = address_item;
1113             } else {
1114                 cur_addr->next = address_item;
1115                 cur_addr = address_item;
1116             }
1117 
1118             address_item->value = g_malloc0(sizeof(*address_item->value));
1119             address_item->value->ip_address = addr_str;
1120             address_item->value->prefix = guest_ip_prefix(ip_addr);
1121             if (ip_addr->Address.lpSockaddr->sa_family == AF_INET) {
1122                 address_item->value->ip_address_type =
1123                     GUEST_IP_ADDRESS_TYPE_IPV4;
1124             } else if (ip_addr->Address.lpSockaddr->sa_family == AF_INET6) {
1125                 address_item->value->ip_address_type =
1126                     GUEST_IP_ADDRESS_TYPE_IPV6;
1127             }
1128         }
1129         if (head_addr) {
1130             info->value->has_ip_addresses = true;
1131             info->value->ip_addresses = head_addr;
1132         }
1133     }
1134     WSACleanup();
1135 out:
1136     g_free(adptr_addrs);
1137     return head;
1138 }
1139 
1140 int64_t qmp_guest_get_time(Error **errp)
1141 {
1142     SYSTEMTIME ts = {0};
1143     int64_t time_ns;
1144     FILETIME tf;
1145 
1146     GetSystemTime(&ts);
1147     if (ts.wYear < 1601 || ts.wYear > 30827) {
1148         error_setg(errp, "Failed to get time");
1149         return -1;
1150     }
1151 
1152     if (!SystemTimeToFileTime(&ts, &tf)) {
1153         error_setg(errp, "Failed to convert system time: %d", (int)GetLastError());
1154         return -1;
1155     }
1156 
1157     time_ns = ((((int64_t)tf.dwHighDateTime << 32) | tf.dwLowDateTime)
1158                 - W32_FT_OFFSET) * 100;
1159 
1160     return time_ns;
1161 }
1162 
1163 void qmp_guest_set_time(bool has_time, int64_t time_ns, Error **errp)
1164 {
1165     Error *local_err = NULL;
1166     SYSTEMTIME ts;
1167     FILETIME tf;
1168     LONGLONG time;
1169 
1170     if (!has_time) {
1171         /* Unfortunately, Windows libraries don't provide an easy way to access
1172          * RTC yet:
1173          *
1174          * https://msdn.microsoft.com/en-us/library/aa908981.aspx
1175          */
1176         error_setg(errp, "Time argument is required on this platform");
1177         return;
1178     }
1179 
1180     /* Validate time passed by user. */
1181     if (time_ns < 0 || time_ns / 100 > INT64_MAX - W32_FT_OFFSET) {
1182         error_setg(errp, "Time %" PRId64 "is invalid", time_ns);
1183         return;
1184     }
1185 
1186     time = time_ns / 100 + W32_FT_OFFSET;
1187 
1188     tf.dwLowDateTime = (DWORD) time;
1189     tf.dwHighDateTime = (DWORD) (time >> 32);
1190 
1191     if (!FileTimeToSystemTime(&tf, &ts)) {
1192         error_setg(errp, "Failed to convert system time %d",
1193                    (int)GetLastError());
1194         return;
1195     }
1196 
1197     acquire_privilege(SE_SYSTEMTIME_NAME, &local_err);
1198     if (local_err) {
1199         error_propagate(errp, local_err);
1200         return;
1201     }
1202 
1203     if (!SetSystemTime(&ts)) {
1204         error_setg(errp, "Failed to set time to guest: %d", (int)GetLastError());
1205         return;
1206     }
1207 }
1208 
1209 GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp)
1210 {
1211     error_setg(errp, QERR_UNSUPPORTED);
1212     return NULL;
1213 }
1214 
1215 int64_t qmp_guest_set_vcpus(GuestLogicalProcessorList *vcpus, Error **errp)
1216 {
1217     error_setg(errp, QERR_UNSUPPORTED);
1218     return -1;
1219 }
1220 
1221 static gchar *
1222 get_net_error_message(gint error)
1223 {
1224     HMODULE module = NULL;
1225     gchar *retval = NULL;
1226     wchar_t *msg = NULL;
1227     int flags, nchars;
1228 
1229     flags = FORMAT_MESSAGE_ALLOCATE_BUFFER
1230         |FORMAT_MESSAGE_IGNORE_INSERTS
1231         |FORMAT_MESSAGE_FROM_SYSTEM;
1232 
1233     if (error >= NERR_BASE && error <= MAX_NERR) {
1234         module = LoadLibraryExW(L"netmsg.dll", NULL, LOAD_LIBRARY_AS_DATAFILE);
1235 
1236         if (module != NULL) {
1237             flags |= FORMAT_MESSAGE_FROM_HMODULE;
1238         }
1239     }
1240 
1241     FormatMessageW(flags, module, error, 0, (LPWSTR)&msg, 0, NULL);
1242 
1243     if (msg != NULL) {
1244         nchars = wcslen(msg);
1245 
1246         if (nchars > 2 && msg[nchars-1] == '\n' && msg[nchars-2] == '\r') {
1247             msg[nchars-2] = '\0';
1248         }
1249 
1250         retval = g_utf16_to_utf8(msg, -1, NULL, NULL, NULL);
1251 
1252         LocalFree(msg);
1253     }
1254 
1255     if (module != NULL) {
1256         FreeLibrary(module);
1257     }
1258 
1259     return retval;
1260 }
1261 
1262 void qmp_guest_set_user_password(const char *username,
1263                                  const char *password,
1264                                  bool crypted,
1265                                  Error **errp)
1266 {
1267     NET_API_STATUS nas;
1268     char *rawpasswddata = NULL;
1269     size_t rawpasswdlen;
1270     wchar_t *user, *wpass;
1271     USER_INFO_1003 pi1003 = { 0, };
1272 
1273     if (crypted) {
1274         error_setg(errp, QERR_UNSUPPORTED);
1275         return;
1276     }
1277 
1278     rawpasswddata = (char *)g_base64_decode(password, &rawpasswdlen);
1279     rawpasswddata = g_renew(char, rawpasswddata, rawpasswdlen + 1);
1280     rawpasswddata[rawpasswdlen] = '\0';
1281 
1282     user = g_utf8_to_utf16(username, -1, NULL, NULL, NULL);
1283     wpass = g_utf8_to_utf16(rawpasswddata, -1, NULL, NULL, NULL);
1284 
1285     pi1003.usri1003_password = wpass;
1286     nas = NetUserSetInfo(NULL, user,
1287                          1003, (LPBYTE)&pi1003,
1288                          NULL);
1289 
1290     if (nas != NERR_Success) {
1291         gchar *msg = get_net_error_message(nas);
1292         error_setg(errp, "failed to set password: %s", msg);
1293         g_free(msg);
1294     }
1295 
1296     g_free(user);
1297     g_free(wpass);
1298     g_free(rawpasswddata);
1299 }
1300 
1301 GuestMemoryBlockList *qmp_guest_get_memory_blocks(Error **errp)
1302 {
1303     error_setg(errp, QERR_UNSUPPORTED);
1304     return NULL;
1305 }
1306 
1307 GuestMemoryBlockResponseList *
1308 qmp_guest_set_memory_blocks(GuestMemoryBlockList *mem_blks, Error **errp)
1309 {
1310     error_setg(errp, QERR_UNSUPPORTED);
1311     return NULL;
1312 }
1313 
1314 GuestMemoryBlockInfo *qmp_guest_get_memory_block_info(Error **errp)
1315 {
1316     error_setg(errp, QERR_UNSUPPORTED);
1317     return NULL;
1318 }
1319 
1320 /* add unsupported commands to the blacklist */
1321 GList *ga_command_blacklist_init(GList *blacklist)
1322 {
1323     const char *list_unsupported[] = {
1324         "guest-suspend-hybrid",
1325         "guest-get-vcpus", "guest-set-vcpus",
1326         "guest-get-memory-blocks", "guest-set-memory-blocks",
1327         "guest-get-memory-block-size",
1328         "guest-fsfreeze-freeze-list",
1329         "guest-fstrim", NULL};
1330     char **p = (char **)list_unsupported;
1331 
1332     while (*p) {
1333         blacklist = g_list_append(blacklist, g_strdup(*p++));
1334     }
1335 
1336     if (!vss_init(true)) {
1337         g_debug("vss_init failed, vss commands are going to be disabled");
1338         const char *list[] = {
1339             "guest-get-fsinfo", "guest-fsfreeze-status",
1340             "guest-fsfreeze-freeze", "guest-fsfreeze-thaw", NULL};
1341         p = (char **)list;
1342 
1343         while (*p) {
1344             blacklist = g_list_append(blacklist, g_strdup(*p++));
1345         }
1346     }
1347 
1348     return blacklist;
1349 }
1350 
1351 /* register init/cleanup routines for stateful command groups */
1352 void ga_command_state_init(GAState *s, GACommandState *cs)
1353 {
1354     if (!vss_initialized()) {
1355         ga_command_state_add(cs, NULL, guest_fsfreeze_cleanup);
1356     }
1357 }
1358