xref: /openbmc/qemu/qga/commands-win32.c (revision b14df228)
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 #include <winioctl.h>
22 #include <ntddscsi.h>
23 #include <setupapi.h>
24 #include <cfgmgr32.h>
25 #include <initguid.h>
26 #include <devpropdef.h>
27 #include <lm.h>
28 #include <wtsapi32.h>
29 #include <wininet.h>
30 
31 #include "guest-agent-core.h"
32 #include "vss-win32.h"
33 #include "qga-qapi-commands.h"
34 #include "qapi/error.h"
35 #include "qapi/qmp/qerror.h"
36 #include "qemu/queue.h"
37 #include "qemu/host-utils.h"
38 #include "qemu/base64.h"
39 #include "commands-common.h"
40 
41 /*
42  * The following should be in devpkey.h, but it isn't. The key names were
43  * prefixed to avoid (future) name clashes. Once the definitions get into
44  * mingw the following lines can be removed.
45  */
46 DEFINE_DEVPROPKEY(qga_DEVPKEY_NAME, 0xb725f130, 0x47ef, 0x101a, 0xa5,
47     0xf1, 0x02, 0x60, 0x8c, 0x9e, 0xeb, 0xac, 10);
48     /* DEVPROP_TYPE_STRING */
49 DEFINE_DEVPROPKEY(qga_DEVPKEY_Device_HardwareIds, 0xa45c254e, 0xdf1c,
50     0x4efd, 0x80, 0x20, 0x67, 0xd1, 0x46, 0xa8, 0x50, 0xe0, 3);
51     /* DEVPROP_TYPE_STRING_LIST */
52 DEFINE_DEVPROPKEY(qga_DEVPKEY_Device_DriverDate, 0xa8b865dd, 0x2e3d,
53     0x4094, 0xad, 0x97, 0xe5, 0x93, 0xa7, 0xc, 0x75, 0xd6, 2);
54     /* DEVPROP_TYPE_FILETIME */
55 DEFINE_DEVPROPKEY(qga_DEVPKEY_Device_DriverVersion, 0xa8b865dd, 0x2e3d,
56     0x4094, 0xad, 0x97, 0xe5, 0x93, 0xa7, 0xc, 0x75, 0xd6, 3);
57     /* DEVPROP_TYPE_STRING */
58 /* The CM_Get_DevNode_PropertyW prototype is only sometimes in cfgmgr32.h */
59 #ifndef CM_Get_DevNode_Property
60 #pragma GCC diagnostic push
61 #pragma GCC diagnostic ignored "-Wredundant-decls"
62 CMAPI CONFIGRET WINAPI CM_Get_DevNode_PropertyW(
63     DEVINST          dnDevInst,
64     CONST DEVPROPKEY * PropertyKey,
65     DEVPROPTYPE      * PropertyType,
66     PBYTE            PropertyBuffer,
67     PULONG           PropertyBufferSize,
68     ULONG            ulFlags
69 );
70 #define CM_Get_DevNode_Property CM_Get_DevNode_PropertyW
71 #pragma GCC diagnostic pop
72 #endif
73 
74 #ifndef SHTDN_REASON_FLAG_PLANNED
75 #define SHTDN_REASON_FLAG_PLANNED 0x80000000
76 #endif
77 
78 /* multiple of 100 nanoseconds elapsed between windows baseline
79  *    (1/1/1601) and Unix Epoch (1/1/1970), accounting for leap years */
80 #define W32_FT_OFFSET (10000000ULL * 60 * 60 * 24 * \
81                        (365 * (1970 - 1601) +       \
82                         (1970 - 1601) / 4 - 3))
83 
84 #define INVALID_SET_FILE_POINTER ((DWORD)-1)
85 
86 struct GuestFileHandle {
87     int64_t id;
88     HANDLE fh;
89     QTAILQ_ENTRY(GuestFileHandle) next;
90 };
91 
92 static struct {
93     QTAILQ_HEAD(, GuestFileHandle) filehandles;
94 } guest_file_state = {
95     .filehandles = QTAILQ_HEAD_INITIALIZER(guest_file_state.filehandles),
96 };
97 
98 #define FILE_GENERIC_APPEND (FILE_GENERIC_WRITE & ~FILE_WRITE_DATA)
99 
100 typedef struct OpenFlags {
101     const char *forms;
102     DWORD desired_access;
103     DWORD creation_disposition;
104 } OpenFlags;
105 static OpenFlags guest_file_open_modes[] = {
106     {"r",   GENERIC_READ,                     OPEN_EXISTING},
107     {"rb",  GENERIC_READ,                     OPEN_EXISTING},
108     {"w",   GENERIC_WRITE,                    CREATE_ALWAYS},
109     {"wb",  GENERIC_WRITE,                    CREATE_ALWAYS},
110     {"a",   FILE_GENERIC_APPEND,              OPEN_ALWAYS  },
111     {"r+",  GENERIC_WRITE | GENERIC_READ,       OPEN_EXISTING},
112     {"rb+", GENERIC_WRITE | GENERIC_READ,       OPEN_EXISTING},
113     {"r+b", GENERIC_WRITE | GENERIC_READ,       OPEN_EXISTING},
114     {"w+",  GENERIC_WRITE | GENERIC_READ,       CREATE_ALWAYS},
115     {"wb+", GENERIC_WRITE | GENERIC_READ,       CREATE_ALWAYS},
116     {"w+b", GENERIC_WRITE | GENERIC_READ,       CREATE_ALWAYS},
117     {"a+",  FILE_GENERIC_APPEND | GENERIC_READ, OPEN_ALWAYS  },
118     {"ab+", FILE_GENERIC_APPEND | GENERIC_READ, OPEN_ALWAYS  },
119     {"a+b", FILE_GENERIC_APPEND | GENERIC_READ, OPEN_ALWAYS  }
120 };
121 
122 #define debug_error(msg) do { \
123     char *suffix = g_win32_error_message(GetLastError()); \
124     g_debug("%s: %s", (msg), suffix); \
125     g_free(suffix); \
126 } while (0)
127 
128 static OpenFlags *find_open_flag(const char *mode_str)
129 {
130     int mode;
131     Error **errp = NULL;
132 
133     for (mode = 0; mode < ARRAY_SIZE(guest_file_open_modes); ++mode) {
134         OpenFlags *flags = guest_file_open_modes + mode;
135 
136         if (strcmp(flags->forms, mode_str) == 0) {
137             return flags;
138         }
139     }
140 
141     error_setg(errp, "invalid file open mode '%s'", mode_str);
142     return NULL;
143 }
144 
145 static int64_t guest_file_handle_add(HANDLE fh, Error **errp)
146 {
147     GuestFileHandle *gfh;
148     int64_t handle;
149 
150     handle = ga_get_fd_handle(ga_state, errp);
151     if (handle < 0) {
152         return -1;
153     }
154     gfh = g_new0(GuestFileHandle, 1);
155     gfh->id = handle;
156     gfh->fh = fh;
157     QTAILQ_INSERT_TAIL(&guest_file_state.filehandles, gfh, next);
158 
159     return handle;
160 }
161 
162 GuestFileHandle *guest_file_handle_find(int64_t id, Error **errp)
163 {
164     GuestFileHandle *gfh;
165     QTAILQ_FOREACH(gfh, &guest_file_state.filehandles, next) {
166         if (gfh->id == id) {
167             return gfh;
168         }
169     }
170     error_setg(errp, "handle '%" PRId64 "' has not been found", id);
171     return NULL;
172 }
173 
174 static void handle_set_nonblocking(HANDLE fh)
175 {
176     DWORD file_type, pipe_state;
177     file_type = GetFileType(fh);
178     if (file_type != FILE_TYPE_PIPE) {
179         return;
180     }
181     /* If file_type == FILE_TYPE_PIPE, according to MSDN
182      * the specified file is socket or named pipe */
183     if (!GetNamedPipeHandleState(fh, &pipe_state, NULL,
184                                  NULL, NULL, NULL, 0)) {
185         return;
186     }
187     /* The fd is named pipe fd */
188     if (pipe_state & PIPE_NOWAIT) {
189         return;
190     }
191 
192     pipe_state |= PIPE_NOWAIT;
193     SetNamedPipeHandleState(fh, &pipe_state, NULL, NULL);
194 }
195 
196 int64_t qmp_guest_file_open(const char *path, bool has_mode,
197                             const char *mode, Error **errp)
198 {
199     int64_t fd = -1;
200     HANDLE fh;
201     HANDLE templ_file = NULL;
202     DWORD share_mode = FILE_SHARE_READ;
203     DWORD flags_and_attr = FILE_ATTRIBUTE_NORMAL;
204     LPSECURITY_ATTRIBUTES sa_attr = NULL;
205     OpenFlags *guest_flags;
206     GError *gerr = NULL;
207     wchar_t *w_path = NULL;
208 
209     if (!has_mode) {
210         mode = "r";
211     }
212     slog("guest-file-open called, filepath: %s, mode: %s", path, mode);
213     guest_flags = find_open_flag(mode);
214     if (guest_flags == NULL) {
215         error_setg(errp, "invalid file open mode");
216         goto done;
217     }
218 
219     w_path = g_utf8_to_utf16(path, -1, NULL, NULL, &gerr);
220     if (!w_path) {
221         goto done;
222     }
223 
224     fh = CreateFileW(w_path, guest_flags->desired_access, share_mode, sa_attr,
225                     guest_flags->creation_disposition, flags_and_attr,
226                     templ_file);
227     if (fh == INVALID_HANDLE_VALUE) {
228         error_setg_win32(errp, GetLastError(), "failed to open file '%s'",
229                          path);
230         goto done;
231     }
232 
233     /* set fd non-blocking to avoid common use cases (like reading from a
234      * named pipe) from hanging the agent
235      */
236     handle_set_nonblocking(fh);
237 
238     fd = guest_file_handle_add(fh, errp);
239     if (fd < 0) {
240         CloseHandle(fh);
241         error_setg(errp, "failed to add handle to qmp handle table");
242         goto done;
243     }
244 
245     slog("guest-file-open, handle: % " PRId64, fd);
246 
247 done:
248     if (gerr) {
249         error_setg(errp, QERR_QGA_COMMAND_FAILED, gerr->message);
250         g_error_free(gerr);
251     }
252     g_free(w_path);
253     return fd;
254 }
255 
256 void qmp_guest_file_close(int64_t handle, Error **errp)
257 {
258     bool ret;
259     GuestFileHandle *gfh = guest_file_handle_find(handle, errp);
260     slog("guest-file-close called, handle: %" PRId64, handle);
261     if (gfh == NULL) {
262         return;
263     }
264     ret = CloseHandle(gfh->fh);
265     if (!ret) {
266         error_setg_win32(errp, GetLastError(), "failed close handle");
267         return;
268     }
269 
270     QTAILQ_REMOVE(&guest_file_state.filehandles, gfh, next);
271     g_free(gfh);
272 }
273 
274 static void acquire_privilege(const char *name, Error **errp)
275 {
276     HANDLE token = NULL;
277     TOKEN_PRIVILEGES priv;
278     Error *local_err = NULL;
279 
280     if (OpenProcessToken(GetCurrentProcess(),
281         TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &token))
282     {
283         if (!LookupPrivilegeValue(NULL, name, &priv.Privileges[0].Luid)) {
284             error_setg(&local_err, QERR_QGA_COMMAND_FAILED,
285                        "no luid for requested privilege");
286             goto out;
287         }
288 
289         priv.PrivilegeCount = 1;
290         priv.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
291 
292         if (!AdjustTokenPrivileges(token, FALSE, &priv, 0, NULL, 0)) {
293             error_setg(&local_err, QERR_QGA_COMMAND_FAILED,
294                        "unable to acquire requested privilege");
295             goto out;
296         }
297 
298     } else {
299         error_setg(&local_err, QERR_QGA_COMMAND_FAILED,
300                    "failed to open privilege token");
301     }
302 
303 out:
304     if (token) {
305         CloseHandle(token);
306     }
307     error_propagate(errp, local_err);
308 }
309 
310 static void execute_async(DWORD WINAPI (*func)(LPVOID), LPVOID opaque,
311                           Error **errp)
312 {
313     HANDLE thread = CreateThread(NULL, 0, func, opaque, 0, NULL);
314     if (!thread) {
315         error_setg(errp, QERR_QGA_COMMAND_FAILED,
316                    "failed to dispatch asynchronous command");
317     }
318 }
319 
320 void qmp_guest_shutdown(bool has_mode, const char *mode, Error **errp)
321 {
322     Error *local_err = NULL;
323     UINT shutdown_flag = EWX_FORCE;
324 
325     slog("guest-shutdown called, mode: %s", mode);
326 
327     if (!has_mode || strcmp(mode, "powerdown") == 0) {
328         shutdown_flag |= EWX_POWEROFF;
329     } else if (strcmp(mode, "halt") == 0) {
330         shutdown_flag |= EWX_SHUTDOWN;
331     } else if (strcmp(mode, "reboot") == 0) {
332         shutdown_flag |= EWX_REBOOT;
333     } else {
334         error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "mode",
335                    "'halt', 'powerdown', or 'reboot'");
336         return;
337     }
338 
339     /* Request a shutdown privilege, but try to shut down the system
340        anyway. */
341     acquire_privilege(SE_SHUTDOWN_NAME, &local_err);
342     if (local_err) {
343         error_propagate(errp, local_err);
344         return;
345     }
346 
347     if (!ExitWindowsEx(shutdown_flag, SHTDN_REASON_FLAG_PLANNED)) {
348         g_autofree gchar *emsg = g_win32_error_message(GetLastError());
349         slog("guest-shutdown failed: %s", emsg);
350         error_setg_win32(errp, GetLastError(), "guest-shutdown failed");
351     }
352 }
353 
354 GuestFileRead *guest_file_read_unsafe(GuestFileHandle *gfh,
355                                       int64_t count, Error **errp)
356 {
357     GuestFileRead *read_data = NULL;
358     guchar *buf;
359     HANDLE fh = gfh->fh;
360     bool is_ok;
361     DWORD read_count;
362 
363     buf = g_malloc0(count + 1);
364     is_ok = ReadFile(fh, buf, count, &read_count, NULL);
365     if (!is_ok) {
366         error_setg_win32(errp, GetLastError(), "failed to read file");
367     } else {
368         buf[read_count] = 0;
369         read_data = g_new0(GuestFileRead, 1);
370         read_data->count = (size_t)read_count;
371         read_data->eof = read_count == 0;
372 
373         if (read_count != 0) {
374             read_data->buf_b64 = g_base64_encode(buf, read_count);
375         }
376     }
377     g_free(buf);
378 
379     return read_data;
380 }
381 
382 GuestFileWrite *qmp_guest_file_write(int64_t handle, const char *buf_b64,
383                                      bool has_count, int64_t count,
384                                      Error **errp)
385 {
386     GuestFileWrite *write_data = NULL;
387     guchar *buf;
388     gsize buf_len;
389     bool is_ok;
390     DWORD write_count;
391     GuestFileHandle *gfh = guest_file_handle_find(handle, errp);
392     HANDLE fh;
393 
394     if (!gfh) {
395         return NULL;
396     }
397     fh = gfh->fh;
398     buf = qbase64_decode(buf_b64, -1, &buf_len, errp);
399     if (!buf) {
400         return NULL;
401     }
402 
403     if (!has_count) {
404         count = buf_len;
405     } else if (count < 0 || count > buf_len) {
406         error_setg(errp, "value '%" PRId64
407                    "' is invalid for argument count", count);
408         goto done;
409     }
410 
411     is_ok = WriteFile(fh, buf, count, &write_count, NULL);
412     if (!is_ok) {
413         error_setg_win32(errp, GetLastError(), "failed to write to file");
414         slog("guest-file-write-failed, handle: %" PRId64, handle);
415     } else {
416         write_data = g_new0(GuestFileWrite, 1);
417         write_data->count = (size_t) write_count;
418     }
419 
420 done:
421     g_free(buf);
422     return write_data;
423 }
424 
425 GuestFileSeek *qmp_guest_file_seek(int64_t handle, int64_t offset,
426                                    GuestFileWhence *whence_code,
427                                    Error **errp)
428 {
429     GuestFileHandle *gfh;
430     GuestFileSeek *seek_data;
431     HANDLE fh;
432     LARGE_INTEGER new_pos, off_pos;
433     off_pos.QuadPart = offset;
434     BOOL res;
435     int whence;
436     Error *err = NULL;
437 
438     gfh = guest_file_handle_find(handle, errp);
439     if (!gfh) {
440         return NULL;
441     }
442 
443     /* We stupidly exposed 'whence':'int' in our qapi */
444     whence = ga_parse_whence(whence_code, &err);
445     if (err) {
446         error_propagate(errp, err);
447         return NULL;
448     }
449 
450     fh = gfh->fh;
451     res = SetFilePointerEx(fh, off_pos, &new_pos, whence);
452     if (!res) {
453         error_setg_win32(errp, GetLastError(), "failed to seek file");
454         return NULL;
455     }
456     seek_data = g_new0(GuestFileSeek, 1);
457     seek_data->position = new_pos.QuadPart;
458     return seek_data;
459 }
460 
461 void qmp_guest_file_flush(int64_t handle, Error **errp)
462 {
463     HANDLE fh;
464     GuestFileHandle *gfh = guest_file_handle_find(handle, errp);
465     if (!gfh) {
466         return;
467     }
468 
469     fh = gfh->fh;
470     if (!FlushFileBuffers(fh)) {
471         error_setg_win32(errp, GetLastError(), "failed to flush file");
472     }
473 }
474 
475 static GuestDiskBusType win2qemu[] = {
476     [BusTypeUnknown] = GUEST_DISK_BUS_TYPE_UNKNOWN,
477     [BusTypeScsi] = GUEST_DISK_BUS_TYPE_SCSI,
478     [BusTypeAtapi] = GUEST_DISK_BUS_TYPE_IDE,
479     [BusTypeAta] = GUEST_DISK_BUS_TYPE_IDE,
480     [BusType1394] = GUEST_DISK_BUS_TYPE_IEEE1394,
481     [BusTypeSsa] = GUEST_DISK_BUS_TYPE_SSA,
482     [BusTypeFibre] = GUEST_DISK_BUS_TYPE_SSA,
483     [BusTypeUsb] = GUEST_DISK_BUS_TYPE_USB,
484     [BusTypeRAID] = GUEST_DISK_BUS_TYPE_RAID,
485     [BusTypeiScsi] = GUEST_DISK_BUS_TYPE_ISCSI,
486     [BusTypeSas] = GUEST_DISK_BUS_TYPE_SAS,
487     [BusTypeSata] = GUEST_DISK_BUS_TYPE_SATA,
488     [BusTypeSd] =  GUEST_DISK_BUS_TYPE_SD,
489     [BusTypeMmc] = GUEST_DISK_BUS_TYPE_MMC,
490 #if (_WIN32_WINNT >= 0x0601)
491     [BusTypeVirtual] = GUEST_DISK_BUS_TYPE_VIRTUAL,
492     [BusTypeFileBackedVirtual] = GUEST_DISK_BUS_TYPE_FILE_BACKED_VIRTUAL,
493     /*
494      * BusTypeSpaces currently is not suported
495      */
496     [BusTypeSpaces] = GUEST_DISK_BUS_TYPE_UNKNOWN,
497     [BusTypeNvme] = GUEST_DISK_BUS_TYPE_NVME,
498 #endif
499 };
500 
501 static GuestDiskBusType find_bus_type(STORAGE_BUS_TYPE bus)
502 {
503     if (bus >= ARRAY_SIZE(win2qemu) || (int)bus < 0) {
504         return GUEST_DISK_BUS_TYPE_UNKNOWN;
505     }
506     return win2qemu[(int)bus];
507 }
508 
509 DEFINE_GUID(GUID_DEVINTERFACE_DISK,
510         0x53f56307L, 0xb6bf, 0x11d0, 0x94, 0xf2,
511         0x00, 0xa0, 0xc9, 0x1e, 0xfb, 0x8b);
512 DEFINE_GUID(GUID_DEVINTERFACE_STORAGEPORT,
513         0x2accfe60L, 0xc130, 0x11d2, 0xb0, 0x82,
514         0x00, 0xa0, 0xc9, 0x1e, 0xfb, 0x8b);
515 
516 static void get_pci_address_for_device(GuestPCIAddress *pci,
517                                        HDEVINFO dev_info)
518 {
519     SP_DEVINFO_DATA dev_info_data;
520     DWORD j;
521     DWORD size;
522     bool partial_pci = false;
523 
524     dev_info_data.cbSize = sizeof(SP_DEVINFO_DATA);
525 
526     for (j = 0;
527          SetupDiEnumDeviceInfo(dev_info, j, &dev_info_data);
528          j++) {
529         DWORD addr, bus, ui_slot, type;
530         int func, slot;
531         size = sizeof(DWORD);
532 
533         /*
534         * There is no need to allocate buffer in the next functions. The
535         * size is known and ULONG according to
536         * https://msdn.microsoft.com/en-us/library/windows/hardware/ff543095(v=vs.85).aspx
537         */
538         if (!SetupDiGetDeviceRegistryProperty(
539                 dev_info, &dev_info_data, SPDRP_BUSNUMBER,
540                 &type, (PBYTE)&bus, size, NULL)) {
541             debug_error("failed to get PCI bus");
542             bus = -1;
543             partial_pci = true;
544         }
545 
546         /*
547         * The function retrieves the device's address. This value will be
548         * transformed into device function and number
549         */
550         if (!SetupDiGetDeviceRegistryProperty(
551                 dev_info, &dev_info_data, SPDRP_ADDRESS,
552                 &type, (PBYTE)&addr, size, NULL)) {
553             debug_error("failed to get PCI address");
554             addr = -1;
555             partial_pci = true;
556         }
557 
558         /*
559         * This call returns UINumber of DEVICE_CAPABILITIES structure.
560         * This number is typically a user-perceived slot number.
561         */
562         if (!SetupDiGetDeviceRegistryProperty(
563                 dev_info, &dev_info_data, SPDRP_UI_NUMBER,
564                 &type, (PBYTE)&ui_slot, size, NULL)) {
565             debug_error("failed to get PCI slot");
566             ui_slot = -1;
567             partial_pci = true;
568         }
569 
570         /*
571         * SetupApi gives us the same information as driver with
572         * IoGetDeviceProperty. According to Microsoft:
573         *
574         *   FunctionNumber = (USHORT)((propertyAddress) & 0x0000FFFF)
575         *   DeviceNumber = (USHORT)(((propertyAddress) >> 16) & 0x0000FFFF)
576         *   SPDRP_ADDRESS is propertyAddress, so we do the same.
577         *
578         * https://docs.microsoft.com/en-us/windows/desktop/api/setupapi/nf-setupapi-setupdigetdeviceregistrypropertya
579         */
580         if (partial_pci) {
581             pci->domain = -1;
582             pci->slot = -1;
583             pci->function = -1;
584             pci->bus = -1;
585             continue;
586         } else {
587             func = ((int)addr == -1) ? -1 : addr & 0x0000FFFF;
588             slot = ((int)addr == -1) ? -1 : (addr >> 16) & 0x0000FFFF;
589             if ((int)ui_slot != slot) {
590                 g_debug("mismatch with reported slot values: %d vs %d",
591                         (int)ui_slot, slot);
592             }
593             pci->domain = 0;
594             pci->slot = (int)ui_slot;
595             pci->function = func;
596             pci->bus = (int)bus;
597             return;
598         }
599     }
600 }
601 
602 static GuestPCIAddress *get_pci_info(int number, Error **errp)
603 {
604     HDEVINFO dev_info = INVALID_HANDLE_VALUE;
605     HDEVINFO parent_dev_info = INVALID_HANDLE_VALUE;
606 
607     SP_DEVINFO_DATA dev_info_data;
608     SP_DEVICE_INTERFACE_DATA dev_iface_data;
609     HANDLE dev_file;
610     int i;
611     GuestPCIAddress *pci = NULL;
612 
613     pci = g_malloc0(sizeof(*pci));
614     pci->domain = -1;
615     pci->slot = -1;
616     pci->function = -1;
617     pci->bus = -1;
618 
619     dev_info = SetupDiGetClassDevs(&GUID_DEVINTERFACE_DISK, 0, 0,
620                                    DIGCF_PRESENT | DIGCF_DEVICEINTERFACE);
621     if (dev_info == INVALID_HANDLE_VALUE) {
622         error_setg_win32(errp, GetLastError(), "failed to get devices tree");
623         goto end;
624     }
625 
626     g_debug("enumerating devices");
627     dev_info_data.cbSize = sizeof(SP_DEVINFO_DATA);
628     dev_iface_data.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA);
629     for (i = 0; SetupDiEnumDeviceInfo(dev_info, i, &dev_info_data); i++) {
630         g_autofree PSP_DEVICE_INTERFACE_DETAIL_DATA pdev_iface_detail_data = NULL;
631         STORAGE_DEVICE_NUMBER sdn;
632         g_autofree char *parent_dev_id = NULL;
633         SP_DEVINFO_DATA parent_dev_info_data;
634         DWORD size = 0;
635 
636         g_debug("getting device path");
637         if (SetupDiEnumDeviceInterfaces(dev_info, &dev_info_data,
638                                         &GUID_DEVINTERFACE_DISK, 0,
639                                         &dev_iface_data)) {
640             if (!SetupDiGetDeviceInterfaceDetail(dev_info, &dev_iface_data,
641                                                  pdev_iface_detail_data,
642                                                  size, &size,
643                                                  &dev_info_data)) {
644                 if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) {
645                     pdev_iface_detail_data = g_malloc(size);
646                     pdev_iface_detail_data->cbSize =
647                         sizeof(*pdev_iface_detail_data);
648                 } else {
649                     error_setg_win32(errp, GetLastError(),
650                                      "failed to get device interfaces");
651                     goto end;
652                 }
653             }
654 
655             if (!SetupDiGetDeviceInterfaceDetail(dev_info, &dev_iface_data,
656                                                  pdev_iface_detail_data,
657                                                  size, &size,
658                                                  &dev_info_data)) {
659                 // pdev_iface_detail_data already is allocated
660                 error_setg_win32(errp, GetLastError(),
661                                     "failed to get device interfaces");
662                 goto end;
663             }
664 
665             dev_file = CreateFile(pdev_iface_detail_data->DevicePath, 0,
666                                   FILE_SHARE_READ, NULL, OPEN_EXISTING, 0,
667                                   NULL);
668 
669             if (!DeviceIoControl(dev_file, IOCTL_STORAGE_GET_DEVICE_NUMBER,
670                                  NULL, 0, &sdn, sizeof(sdn), &size, NULL)) {
671                 CloseHandle(dev_file);
672                 error_setg_win32(errp, GetLastError(),
673                                  "failed to get device slot number");
674                 goto end;
675             }
676 
677             CloseHandle(dev_file);
678             if (sdn.DeviceNumber != number) {
679                 continue;
680             }
681         } else {
682             error_setg_win32(errp, GetLastError(),
683                              "failed to get device interfaces");
684             goto end;
685         }
686 
687         g_debug("found device slot %d. Getting storage controller", number);
688         {
689             CONFIGRET cr;
690             DEVINST dev_inst, parent_dev_inst;
691             ULONG dev_id_size = 0;
692 
693             size = 0;
694             if (!SetupDiGetDeviceInstanceId(dev_info, &dev_info_data,
695                                             parent_dev_id, size, &size)) {
696                 if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) {
697                     parent_dev_id = g_malloc(size);
698                 } else {
699                     error_setg_win32(errp, GetLastError(),
700                                      "failed to get device instance ID");
701                     goto end;
702                 }
703             }
704 
705             if (!SetupDiGetDeviceInstanceId(dev_info, &dev_info_data,
706                                             parent_dev_id, size, &size)) {
707                 // parent_dev_id already is allocated
708                 error_setg_win32(errp, GetLastError(),
709                                     "failed to get device instance ID");
710                 goto end;
711             }
712 
713             /*
714              * CM API used here as opposed to
715              * SetupDiGetDeviceProperty(..., DEVPKEY_Device_Parent, ...)
716              * which exports are only available in mingw-w64 6+
717              */
718             cr = CM_Locate_DevInst(&dev_inst, parent_dev_id, 0);
719             if (cr != CR_SUCCESS) {
720                 g_error("CM_Locate_DevInst failed with code %lx", cr);
721                 error_setg_win32(errp, GetLastError(),
722                                  "failed to get device instance");
723                 goto end;
724             }
725             cr = CM_Get_Parent(&parent_dev_inst, dev_inst, 0);
726             if (cr != CR_SUCCESS) {
727                 g_error("CM_Get_Parent failed with code %lx", cr);
728                 error_setg_win32(errp, GetLastError(),
729                                  "failed to get parent device instance");
730                 goto end;
731             }
732 
733             cr = CM_Get_Device_ID_Size(&dev_id_size, parent_dev_inst, 0);
734             if (cr != CR_SUCCESS) {
735                 g_error("CM_Get_Device_ID_Size failed with code %lx", cr);
736                 error_setg_win32(errp, GetLastError(),
737                                  "failed to get parent device ID length");
738                 goto end;
739             }
740 
741             ++dev_id_size;
742             if (dev_id_size > size) {
743                 g_free(parent_dev_id);
744                 parent_dev_id = g_malloc(dev_id_size);
745             }
746 
747             cr = CM_Get_Device_ID(parent_dev_inst, parent_dev_id, dev_id_size,
748                                   0);
749             if (cr != CR_SUCCESS) {
750                 g_error("CM_Get_Device_ID failed with code %lx", cr);
751                 error_setg_win32(errp, GetLastError(),
752                                  "failed to get parent device ID");
753                 goto end;
754             }
755         }
756 
757         g_debug("querying storage controller %s for PCI information",
758                 parent_dev_id);
759         parent_dev_info =
760             SetupDiGetClassDevs(&GUID_DEVINTERFACE_STORAGEPORT, parent_dev_id,
761                                 NULL, DIGCF_PRESENT | DIGCF_DEVICEINTERFACE);
762 
763         if (parent_dev_info == INVALID_HANDLE_VALUE) {
764             error_setg_win32(errp, GetLastError(),
765                              "failed to get parent device");
766             goto end;
767         }
768 
769         parent_dev_info_data.cbSize = sizeof(SP_DEVINFO_DATA);
770         if (!SetupDiEnumDeviceInfo(parent_dev_info, 0, &parent_dev_info_data)) {
771             error_setg_win32(errp, GetLastError(),
772                            "failed to get parent device data");
773             goto end;
774         }
775 
776         get_pci_address_for_device(pci, parent_dev_info);
777 
778         break;
779     }
780 
781 end:
782     if (parent_dev_info != INVALID_HANDLE_VALUE) {
783         SetupDiDestroyDeviceInfoList(parent_dev_info);
784     }
785     if (dev_info != INVALID_HANDLE_VALUE) {
786         SetupDiDestroyDeviceInfoList(dev_info);
787     }
788     return pci;
789 }
790 
791 static void get_disk_properties(HANDLE vol_h, GuestDiskAddress *disk,
792     Error **errp)
793 {
794     STORAGE_PROPERTY_QUERY query;
795     STORAGE_DEVICE_DESCRIPTOR *dev_desc, buf;
796     DWORD received;
797     ULONG size = sizeof(buf);
798 
799     dev_desc = &buf;
800     query.PropertyId = StorageDeviceProperty;
801     query.QueryType = PropertyStandardQuery;
802 
803     if (!DeviceIoControl(vol_h, IOCTL_STORAGE_QUERY_PROPERTY, &query,
804                          sizeof(STORAGE_PROPERTY_QUERY), dev_desc,
805                          size, &received, NULL)) {
806         error_setg_win32(errp, GetLastError(), "failed to get bus type");
807         return;
808     }
809     disk->bus_type = find_bus_type(dev_desc->BusType);
810     g_debug("bus type %d", disk->bus_type);
811 
812     /* Query once more. Now with long enough buffer. */
813     size = dev_desc->Size;
814     dev_desc = g_malloc0(size);
815     if (!DeviceIoControl(vol_h, IOCTL_STORAGE_QUERY_PROPERTY, &query,
816                          sizeof(STORAGE_PROPERTY_QUERY), dev_desc,
817                          size, &received, NULL)) {
818         error_setg_win32(errp, GetLastError(), "failed to get serial number");
819         g_debug("failed to get serial number");
820         goto out_free;
821     }
822     if (dev_desc->SerialNumberOffset > 0) {
823         const char *serial;
824         size_t len;
825 
826         if (dev_desc->SerialNumberOffset >= received) {
827             error_setg(errp, "failed to get serial number: offset outside the buffer");
828             g_debug("serial number offset outside the buffer");
829             goto out_free;
830         }
831         serial = (char *)dev_desc + dev_desc->SerialNumberOffset;
832         len = received - dev_desc->SerialNumberOffset;
833         g_debug("serial number \"%s\"", serial);
834         if (*serial != 0) {
835             disk->serial = g_strndup(serial, len);
836             disk->has_serial = true;
837         }
838     }
839 out_free:
840     g_free(dev_desc);
841 
842     return;
843 }
844 
845 static void get_single_disk_info(int disk_number,
846                                  GuestDiskAddress *disk, Error **errp)
847 {
848     SCSI_ADDRESS addr, *scsi_ad;
849     DWORD len;
850     HANDLE disk_h;
851     Error *local_err = NULL;
852 
853     scsi_ad = &addr;
854 
855     g_debug("getting disk info for: %s", disk->dev);
856     disk_h = CreateFile(disk->dev, 0, FILE_SHARE_READ, NULL, OPEN_EXISTING,
857                        0, NULL);
858     if (disk_h == INVALID_HANDLE_VALUE) {
859         error_setg_win32(errp, GetLastError(), "failed to open disk");
860         return;
861     }
862 
863     get_disk_properties(disk_h, disk, &local_err);
864     if (local_err) {
865         error_propagate(errp, local_err);
866         goto err_close;
867     }
868 
869     g_debug("bus type %d", disk->bus_type);
870     /* always set pci_controller as required by schema. get_pci_info() should
871      * report -1 values for non-PCI buses rather than fail. fail the command
872      * if that doesn't hold since that suggests some other unexpected
873      * breakage
874      */
875     disk->pci_controller = get_pci_info(disk_number, &local_err);
876     if (local_err) {
877         error_propagate(errp, local_err);
878         goto err_close;
879     }
880     if (disk->bus_type == GUEST_DISK_BUS_TYPE_SCSI
881             || disk->bus_type == GUEST_DISK_BUS_TYPE_IDE
882             || disk->bus_type == GUEST_DISK_BUS_TYPE_RAID
883             /* This bus type is not supported before Windows Server 2003 SP1 */
884             || disk->bus_type == GUEST_DISK_BUS_TYPE_SAS
885         ) {
886         /* We are able to use the same ioctls for different bus types
887          * according to Microsoft docs
888          * https://technet.microsoft.com/en-us/library/ee851589(v=ws.10).aspx */
889         g_debug("getting SCSI info");
890         if (DeviceIoControl(disk_h, IOCTL_SCSI_GET_ADDRESS, NULL, 0, scsi_ad,
891                             sizeof(SCSI_ADDRESS), &len, NULL)) {
892             disk->unit = addr.Lun;
893             disk->target = addr.TargetId;
894             disk->bus = addr.PathId;
895         }
896         /* We do not set error in this case, because we still have enough
897          * information about volume. */
898     }
899 
900 err_close:
901     CloseHandle(disk_h);
902     return;
903 }
904 
905 /* VSS provider works with volumes, thus there is no difference if
906  * the volume consist of spanned disks. Info about the first disk in the
907  * volume is returned for the spanned disk group (LVM) */
908 static GuestDiskAddressList *build_guest_disk_info(char *guid, Error **errp)
909 {
910     Error *local_err = NULL;
911     GuestDiskAddressList *list = NULL;
912     GuestDiskAddress *disk = NULL;
913     int i;
914     HANDLE vol_h;
915     DWORD size;
916     PVOLUME_DISK_EXTENTS extents = NULL;
917 
918     /* strip final backslash */
919     char *name = g_strdup(guid);
920     if (g_str_has_suffix(name, "\\")) {
921         name[strlen(name) - 1] = 0;
922     }
923 
924     g_debug("opening %s", name);
925     vol_h = CreateFile(name, 0, FILE_SHARE_READ, NULL, OPEN_EXISTING,
926                        0, NULL);
927     if (vol_h == INVALID_HANDLE_VALUE) {
928         error_setg_win32(errp, GetLastError(), "failed to open volume");
929         goto out;
930     }
931 
932     /* Get list of extents */
933     g_debug("getting disk extents");
934     size = sizeof(VOLUME_DISK_EXTENTS);
935     extents = g_malloc0(size);
936     if (!DeviceIoControl(vol_h, IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS, NULL,
937                          0, extents, size, &size, NULL)) {
938         DWORD last_err = GetLastError();
939         if (last_err == ERROR_MORE_DATA) {
940             /* Try once more with big enough buffer */
941             g_free(extents);
942             extents = g_malloc0(size);
943             if (!DeviceIoControl(
944                     vol_h, IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS, NULL,
945                     0, extents, size, NULL, NULL)) {
946                 error_setg_win32(errp, GetLastError(),
947                     "failed to get disk extents");
948                 goto out;
949             }
950         } else if (last_err == ERROR_INVALID_FUNCTION) {
951             /* Possibly CD-ROM or a shared drive. Try to pass the volume */
952             g_debug("volume not on disk");
953             disk = g_new0(GuestDiskAddress, 1);
954             disk->has_dev = true;
955             disk->dev = g_strdup(name);
956             get_single_disk_info(0xffffffff, disk, &local_err);
957             if (local_err) {
958                 g_debug("failed to get disk info, ignoring error: %s",
959                     error_get_pretty(local_err));
960                 error_free(local_err);
961                 goto out;
962             }
963             QAPI_LIST_PREPEND(list, disk);
964             disk = NULL;
965             goto out;
966         } else {
967             error_setg_win32(errp, GetLastError(),
968                 "failed to get disk extents");
969             goto out;
970         }
971     }
972     g_debug("Number of extents: %lu", extents->NumberOfDiskExtents);
973 
974     /* Go through each extent */
975     for (i = 0; i < extents->NumberOfDiskExtents; i++) {
976         disk = g_new0(GuestDiskAddress, 1);
977 
978         /* Disk numbers directly correspond to numbers used in UNCs
979          *
980          * See documentation for DISK_EXTENT:
981          * https://docs.microsoft.com/en-us/windows/desktop/api/winioctl/ns-winioctl-_disk_extent
982          *
983          * See also Naming Files, Paths and Namespaces:
984          * https://docs.microsoft.com/en-us/windows/desktop/FileIO/naming-a-file#win32-device-namespaces
985          */
986         disk->has_dev = true;
987         disk->dev = g_strdup_printf("\\\\.\\PhysicalDrive%lu",
988                                     extents->Extents[i].DiskNumber);
989 
990         get_single_disk_info(extents->Extents[i].DiskNumber, disk, &local_err);
991         if (local_err) {
992             error_propagate(errp, local_err);
993             goto out;
994         }
995         QAPI_LIST_PREPEND(list, disk);
996         disk = NULL;
997     }
998 
999 
1000 out:
1001     if (vol_h != INVALID_HANDLE_VALUE) {
1002         CloseHandle(vol_h);
1003     }
1004     qapi_free_GuestDiskAddress(disk);
1005     g_free(extents);
1006     g_free(name);
1007 
1008     return list;
1009 }
1010 
1011 GuestDiskInfoList *qmp_guest_get_disks(Error **errp)
1012 {
1013     GuestDiskInfoList *ret = NULL;
1014     HDEVINFO dev_info;
1015     SP_DEVICE_INTERFACE_DATA dev_iface_data;
1016     int i;
1017 
1018     dev_info = SetupDiGetClassDevs(&GUID_DEVINTERFACE_DISK, 0, 0,
1019         DIGCF_PRESENT | DIGCF_DEVICEINTERFACE);
1020     if (dev_info == INVALID_HANDLE_VALUE) {
1021         error_setg_win32(errp, GetLastError(), "failed to get device tree");
1022         return NULL;
1023     }
1024 
1025     g_debug("enumerating devices");
1026     dev_iface_data.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA);
1027     for (i = 0;
1028         SetupDiEnumDeviceInterfaces(dev_info, NULL, &GUID_DEVINTERFACE_DISK,
1029             i, &dev_iface_data);
1030         i++) {
1031         GuestDiskAddress *address = NULL;
1032         GuestDiskInfo *disk = NULL;
1033         Error *local_err = NULL;
1034         g_autofree PSP_DEVICE_INTERFACE_DETAIL_DATA
1035             pdev_iface_detail_data = NULL;
1036         STORAGE_DEVICE_NUMBER sdn;
1037         HANDLE dev_file;
1038         DWORD size = 0;
1039         BOOL result;
1040         int attempt;
1041 
1042         g_debug("  getting device path");
1043         for (attempt = 0, result = FALSE; attempt < 2 && !result; attempt++) {
1044             result = SetupDiGetDeviceInterfaceDetail(dev_info,
1045                 &dev_iface_data, pdev_iface_detail_data, size, &size, NULL);
1046             if (result) {
1047                 break;
1048             }
1049             if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) {
1050                 pdev_iface_detail_data = g_realloc(pdev_iface_detail_data,
1051                     size);
1052                 pdev_iface_detail_data->cbSize =
1053                     sizeof(*pdev_iface_detail_data);
1054             } else {
1055                 g_debug("failed to get device interface details");
1056                 break;
1057             }
1058         }
1059         if (!result) {
1060             g_debug("skipping device");
1061             continue;
1062         }
1063 
1064         g_debug("  device: %s", pdev_iface_detail_data->DevicePath);
1065         dev_file = CreateFile(pdev_iface_detail_data->DevicePath, 0,
1066             FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, NULL);
1067         if (!DeviceIoControl(dev_file, IOCTL_STORAGE_GET_DEVICE_NUMBER,
1068                 NULL, 0, &sdn, sizeof(sdn), &size, NULL)) {
1069             CloseHandle(dev_file);
1070             debug_error("failed to get storage device number");
1071             continue;
1072         }
1073         CloseHandle(dev_file);
1074 
1075         disk = g_new0(GuestDiskInfo, 1);
1076         disk->name = g_strdup_printf("\\\\.\\PhysicalDrive%lu",
1077             sdn.DeviceNumber);
1078 
1079         g_debug("  number: %lu", sdn.DeviceNumber);
1080         address = g_new0(GuestDiskAddress, 1);
1081         address->has_dev = true;
1082         address->dev = g_strdup(disk->name);
1083         get_single_disk_info(sdn.DeviceNumber, address, &local_err);
1084         if (local_err) {
1085             g_debug("failed to get disk info: %s",
1086                 error_get_pretty(local_err));
1087             error_free(local_err);
1088             qapi_free_GuestDiskAddress(address);
1089             address = NULL;
1090         } else {
1091             disk->address = address;
1092             disk->has_address = true;
1093         }
1094 
1095         QAPI_LIST_PREPEND(ret, disk);
1096     }
1097 
1098     SetupDiDestroyDeviceInfoList(dev_info);
1099     return ret;
1100 }
1101 
1102 static GuestFilesystemInfo *build_guest_fsinfo(char *guid, Error **errp)
1103 {
1104     DWORD info_size;
1105     char mnt, *mnt_point;
1106     wchar_t wfs_name[32];
1107     char fs_name[32];
1108     wchar_t vol_info[MAX_PATH + 1];
1109     size_t len;
1110     uint64_t i64FreeBytesToCaller, i64TotalBytes, i64FreeBytes;
1111     GuestFilesystemInfo *fs = NULL;
1112     HANDLE hLocalDiskHandle = INVALID_HANDLE_VALUE;
1113 
1114     GetVolumePathNamesForVolumeName(guid, (LPCH)&mnt, 0, &info_size);
1115     if (GetLastError() != ERROR_MORE_DATA) {
1116         error_setg_win32(errp, GetLastError(), "failed to get volume name");
1117         return NULL;
1118     }
1119 
1120     mnt_point = g_malloc(info_size + 1);
1121     if (!GetVolumePathNamesForVolumeName(guid, mnt_point, info_size,
1122                                          &info_size)) {
1123         error_setg_win32(errp, GetLastError(), "failed to get volume name");
1124         goto free;
1125     }
1126 
1127     hLocalDiskHandle = CreateFile(guid, 0 , 0, NULL, OPEN_EXISTING,
1128                                   FILE_ATTRIBUTE_NORMAL |
1129                                   FILE_FLAG_BACKUP_SEMANTICS, NULL);
1130     if (INVALID_HANDLE_VALUE == hLocalDiskHandle) {
1131         error_setg_win32(errp, GetLastError(), "failed to get handle for volume");
1132         goto free;
1133     }
1134 
1135     len = strlen(mnt_point);
1136     mnt_point[len] = '\\';
1137     mnt_point[len + 1] = 0;
1138 
1139     if (!GetVolumeInformationByHandleW(hLocalDiskHandle, vol_info,
1140                                        sizeof(vol_info), NULL, NULL, NULL,
1141                                        (LPWSTR) & wfs_name, sizeof(wfs_name))) {
1142         if (GetLastError() != ERROR_NOT_READY) {
1143             error_setg_win32(errp, GetLastError(), "failed to get volume info");
1144         }
1145         goto free;
1146     }
1147 
1148     fs = g_malloc(sizeof(*fs));
1149     fs->name = g_strdup(guid);
1150     fs->has_total_bytes = false;
1151     fs->has_used_bytes = false;
1152     if (len == 0) {
1153         fs->mountpoint = g_strdup("System Reserved");
1154     } else {
1155         fs->mountpoint = g_strndup(mnt_point, len);
1156         if (GetDiskFreeSpaceEx(fs->mountpoint,
1157                                (PULARGE_INTEGER) & i64FreeBytesToCaller,
1158                                (PULARGE_INTEGER) & i64TotalBytes,
1159                                (PULARGE_INTEGER) & i64FreeBytes)) {
1160             fs->used_bytes = i64TotalBytes - i64FreeBytes;
1161             fs->total_bytes = i64TotalBytes;
1162             fs->has_total_bytes = true;
1163             fs->has_used_bytes = true;
1164         }
1165     }
1166     wcstombs(fs_name, wfs_name, sizeof(wfs_name));
1167     fs->type = g_strdup(fs_name);
1168     fs->disk = build_guest_disk_info(guid, errp);
1169 free:
1170     if (hLocalDiskHandle != INVALID_HANDLE_VALUE) {
1171         CloseHandle(hLocalDiskHandle);
1172     }
1173     g_free(mnt_point);
1174     return fs;
1175 }
1176 
1177 GuestFilesystemInfoList *qmp_guest_get_fsinfo(Error **errp)
1178 {
1179     HANDLE vol_h;
1180     GuestFilesystemInfoList *ret = NULL;
1181     char guid[256];
1182 
1183     vol_h = FindFirstVolume(guid, sizeof(guid));
1184     if (vol_h == INVALID_HANDLE_VALUE) {
1185         error_setg_win32(errp, GetLastError(), "failed to find any volume");
1186         return NULL;
1187     }
1188 
1189     do {
1190         Error *local_err = NULL;
1191         GuestFilesystemInfo *info = build_guest_fsinfo(guid, &local_err);
1192         if (local_err) {
1193             g_debug("failed to get filesystem info, ignoring error: %s",
1194                     error_get_pretty(local_err));
1195             error_free(local_err);
1196             continue;
1197         }
1198         QAPI_LIST_PREPEND(ret, info);
1199     } while (FindNextVolume(vol_h, guid, sizeof(guid)));
1200 
1201     if (GetLastError() != ERROR_NO_MORE_FILES) {
1202         error_setg_win32(errp, GetLastError(), "failed to find next volume");
1203     }
1204 
1205     FindVolumeClose(vol_h);
1206     return ret;
1207 }
1208 
1209 /*
1210  * Return status of freeze/thaw
1211  */
1212 GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **errp)
1213 {
1214     if (!vss_initialized()) {
1215         error_setg(errp, QERR_UNSUPPORTED);
1216         return 0;
1217     }
1218 
1219     if (ga_is_frozen(ga_state)) {
1220         return GUEST_FSFREEZE_STATUS_FROZEN;
1221     }
1222 
1223     return GUEST_FSFREEZE_STATUS_THAWED;
1224 }
1225 
1226 /*
1227  * Freeze local file systems using Volume Shadow-copy Service.
1228  * The frozen state is limited for up to 10 seconds by VSS.
1229  */
1230 int64_t qmp_guest_fsfreeze_freeze(Error **errp)
1231 {
1232     return qmp_guest_fsfreeze_freeze_list(false, NULL, errp);
1233 }
1234 
1235 int64_t qmp_guest_fsfreeze_freeze_list(bool has_mountpoints,
1236                                        strList *mountpoints,
1237                                        Error **errp)
1238 {
1239     int i;
1240     Error *local_err = NULL;
1241 
1242     if (!vss_initialized()) {
1243         error_setg(errp, QERR_UNSUPPORTED);
1244         return 0;
1245     }
1246 
1247     slog("guest-fsfreeze called");
1248 
1249     /* cannot risk guest agent blocking itself on a write in this state */
1250     ga_set_frozen(ga_state);
1251 
1252     qga_vss_fsfreeze(&i, true, mountpoints, &local_err);
1253     if (local_err) {
1254         error_propagate(errp, local_err);
1255         goto error;
1256     }
1257 
1258     return i;
1259 
1260 error:
1261     local_err = NULL;
1262     qmp_guest_fsfreeze_thaw(&local_err);
1263     if (local_err) {
1264         g_debug("cleanup thaw: %s", error_get_pretty(local_err));
1265         error_free(local_err);
1266     }
1267     return 0;
1268 }
1269 
1270 /*
1271  * Thaw local file systems using Volume Shadow-copy Service.
1272  */
1273 int64_t qmp_guest_fsfreeze_thaw(Error **errp)
1274 {
1275     int i;
1276 
1277     if (!vss_initialized()) {
1278         error_setg(errp, QERR_UNSUPPORTED);
1279         return 0;
1280     }
1281 
1282     qga_vss_fsfreeze(&i, false, NULL, errp);
1283 
1284     ga_unset_frozen(ga_state);
1285     return i;
1286 }
1287 
1288 static void guest_fsfreeze_cleanup(void)
1289 {
1290     Error *err = NULL;
1291 
1292     if (!vss_initialized()) {
1293         return;
1294     }
1295 
1296     if (ga_is_frozen(ga_state) == GUEST_FSFREEZE_STATUS_FROZEN) {
1297         qmp_guest_fsfreeze_thaw(&err);
1298         if (err) {
1299             slog("failed to clean up frozen filesystems: %s",
1300                  error_get_pretty(err));
1301             error_free(err);
1302         }
1303     }
1304 
1305     vss_deinit(true);
1306 }
1307 
1308 /*
1309  * Walk list of mounted file systems in the guest, and discard unused
1310  * areas.
1311  */
1312 GuestFilesystemTrimResponse *
1313 qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp)
1314 {
1315     GuestFilesystemTrimResponse *resp;
1316     HANDLE handle;
1317     WCHAR guid[MAX_PATH] = L"";
1318     OSVERSIONINFO osvi;
1319     BOOL win8_or_later;
1320 
1321     ZeroMemory(&osvi, sizeof(OSVERSIONINFO));
1322     osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
1323     GetVersionEx(&osvi);
1324     win8_or_later = (osvi.dwMajorVersion > 6 ||
1325                           ((osvi.dwMajorVersion == 6) &&
1326                            (osvi.dwMinorVersion >= 2)));
1327     if (!win8_or_later) {
1328         error_setg(errp, "fstrim is only supported for Win8+");
1329         return NULL;
1330     }
1331 
1332     handle = FindFirstVolumeW(guid, ARRAYSIZE(guid));
1333     if (handle == INVALID_HANDLE_VALUE) {
1334         error_setg_win32(errp, GetLastError(), "failed to find any volume");
1335         return NULL;
1336     }
1337 
1338     resp = g_new0(GuestFilesystemTrimResponse, 1);
1339 
1340     do {
1341         GuestFilesystemTrimResult *res;
1342         PWCHAR uc_path;
1343         DWORD char_count = 0;
1344         char *path, *out;
1345         GError *gerr = NULL;
1346         gchar *argv[4];
1347 
1348         GetVolumePathNamesForVolumeNameW(guid, NULL, 0, &char_count);
1349 
1350         if (GetLastError() != ERROR_MORE_DATA) {
1351             continue;
1352         }
1353         if (GetDriveTypeW(guid) != DRIVE_FIXED) {
1354             continue;
1355         }
1356 
1357         uc_path = g_new(WCHAR, char_count);
1358         if (!GetVolumePathNamesForVolumeNameW(guid, uc_path, char_count,
1359                                               &char_count) || !*uc_path) {
1360             /* strange, but this condition could be faced even with size == 2 */
1361             g_free(uc_path);
1362             continue;
1363         }
1364 
1365         res = g_new0(GuestFilesystemTrimResult, 1);
1366 
1367         path = g_utf16_to_utf8(uc_path, char_count, NULL, NULL, &gerr);
1368 
1369         g_free(uc_path);
1370 
1371         if (!path) {
1372             res->has_error = true;
1373             res->error = g_strdup(gerr->message);
1374             g_error_free(gerr);
1375             break;
1376         }
1377 
1378         res->path = path;
1379 
1380         QAPI_LIST_PREPEND(resp->paths, res);
1381 
1382         memset(argv, 0, sizeof(argv));
1383         argv[0] = (gchar *)"defrag.exe";
1384         argv[1] = (gchar *)"/L";
1385         argv[2] = path;
1386 
1387         if (!g_spawn_sync(NULL, argv, NULL, G_SPAWN_SEARCH_PATH, NULL, NULL,
1388                           &out /* stdout */, NULL /* stdin */,
1389                           NULL, &gerr)) {
1390             res->has_error = true;
1391             res->error = g_strdup(gerr->message);
1392             g_error_free(gerr);
1393         } else {
1394             /* defrag.exe is UGLY. Exit code is ALWAYS zero.
1395                Error is reported in the output with something like
1396                (x89000020) etc code in the stdout */
1397 
1398             int i;
1399             gchar **lines = g_strsplit(out, "\r\n", 0);
1400             g_free(out);
1401 
1402             for (i = 0; lines[i] != NULL; i++) {
1403                 if (g_strstr_len(lines[i], -1, "(0x") == NULL) {
1404                     continue;
1405                 }
1406                 res->has_error = true;
1407                 res->error = g_strdup(lines[i]);
1408                 break;
1409             }
1410             g_strfreev(lines);
1411         }
1412     } while (FindNextVolumeW(handle, guid, ARRAYSIZE(guid)));
1413 
1414     FindVolumeClose(handle);
1415     return resp;
1416 }
1417 
1418 typedef enum {
1419     GUEST_SUSPEND_MODE_DISK,
1420     GUEST_SUSPEND_MODE_RAM
1421 } GuestSuspendMode;
1422 
1423 static void check_suspend_mode(GuestSuspendMode mode, Error **errp)
1424 {
1425     SYSTEM_POWER_CAPABILITIES sys_pwr_caps;
1426 
1427     ZeroMemory(&sys_pwr_caps, sizeof(sys_pwr_caps));
1428     if (!GetPwrCapabilities(&sys_pwr_caps)) {
1429         error_setg(errp, QERR_QGA_COMMAND_FAILED,
1430                    "failed to determine guest suspend capabilities");
1431         return;
1432     }
1433 
1434     switch (mode) {
1435     case GUEST_SUSPEND_MODE_DISK:
1436         if (!sys_pwr_caps.SystemS4) {
1437             error_setg(errp, QERR_QGA_COMMAND_FAILED,
1438                        "suspend-to-disk not supported by OS");
1439         }
1440         break;
1441     case GUEST_SUSPEND_MODE_RAM:
1442         if (!sys_pwr_caps.SystemS3) {
1443             error_setg(errp, QERR_QGA_COMMAND_FAILED,
1444                        "suspend-to-ram not supported by OS");
1445         }
1446         break;
1447     default:
1448         abort();
1449     }
1450 }
1451 
1452 static DWORD WINAPI do_suspend(LPVOID opaque)
1453 {
1454     GuestSuspendMode *mode = opaque;
1455     DWORD ret = 0;
1456 
1457     if (!SetSuspendState(*mode == GUEST_SUSPEND_MODE_DISK, TRUE, TRUE)) {
1458         g_autofree gchar *emsg = g_win32_error_message(GetLastError());
1459         slog("failed to suspend guest: %s", emsg);
1460         ret = -1;
1461     }
1462     g_free(mode);
1463     return ret;
1464 }
1465 
1466 void qmp_guest_suspend_disk(Error **errp)
1467 {
1468     Error *local_err = NULL;
1469     GuestSuspendMode *mode = g_new(GuestSuspendMode, 1);
1470 
1471     *mode = GUEST_SUSPEND_MODE_DISK;
1472     check_suspend_mode(*mode, &local_err);
1473     if (local_err) {
1474         goto out;
1475     }
1476     acquire_privilege(SE_SHUTDOWN_NAME, &local_err);
1477     if (local_err) {
1478         goto out;
1479     }
1480     execute_async(do_suspend, mode, &local_err);
1481 
1482 out:
1483     if (local_err) {
1484         error_propagate(errp, local_err);
1485         g_free(mode);
1486     }
1487 }
1488 
1489 void qmp_guest_suspend_ram(Error **errp)
1490 {
1491     Error *local_err = NULL;
1492     GuestSuspendMode *mode = g_new(GuestSuspendMode, 1);
1493 
1494     *mode = GUEST_SUSPEND_MODE_RAM;
1495     check_suspend_mode(*mode, &local_err);
1496     if (local_err) {
1497         goto out;
1498     }
1499     acquire_privilege(SE_SHUTDOWN_NAME, &local_err);
1500     if (local_err) {
1501         goto out;
1502     }
1503     execute_async(do_suspend, mode, &local_err);
1504 
1505 out:
1506     if (local_err) {
1507         error_propagate(errp, local_err);
1508         g_free(mode);
1509     }
1510 }
1511 
1512 void qmp_guest_suspend_hybrid(Error **errp)
1513 {
1514     error_setg(errp, QERR_UNSUPPORTED);
1515 }
1516 
1517 static IP_ADAPTER_ADDRESSES *guest_get_adapters_addresses(Error **errp)
1518 {
1519     IP_ADAPTER_ADDRESSES *adptr_addrs = NULL;
1520     ULONG adptr_addrs_len = 0;
1521     DWORD ret;
1522 
1523     /* Call the first time to get the adptr_addrs_len. */
1524     GetAdaptersAddresses(AF_UNSPEC, GAA_FLAG_INCLUDE_PREFIX,
1525                          NULL, adptr_addrs, &adptr_addrs_len);
1526 
1527     adptr_addrs = g_malloc(adptr_addrs_len);
1528     ret = GetAdaptersAddresses(AF_UNSPEC, GAA_FLAG_INCLUDE_PREFIX,
1529                                NULL, adptr_addrs, &adptr_addrs_len);
1530     if (ret != ERROR_SUCCESS) {
1531         error_setg_win32(errp, ret, "failed to get adapters addresses");
1532         g_free(adptr_addrs);
1533         adptr_addrs = NULL;
1534     }
1535     return adptr_addrs;
1536 }
1537 
1538 static char *guest_wctomb_dup(WCHAR *wstr)
1539 {
1540     char *str;
1541     size_t str_size;
1542 
1543     str_size = WideCharToMultiByte(CP_UTF8, 0, wstr, -1, NULL, 0, NULL, NULL);
1544     /* add 1 to str_size for NULL terminator */
1545     str = g_malloc(str_size + 1);
1546     WideCharToMultiByte(CP_UTF8, 0, wstr, -1, str, str_size, NULL, NULL);
1547     return str;
1548 }
1549 
1550 static char *guest_addr_to_str(IP_ADAPTER_UNICAST_ADDRESS *ip_addr,
1551                                Error **errp)
1552 {
1553     char addr_str[INET6_ADDRSTRLEN + INET_ADDRSTRLEN];
1554     DWORD len;
1555     int ret;
1556 
1557     if (ip_addr->Address.lpSockaddr->sa_family == AF_INET ||
1558             ip_addr->Address.lpSockaddr->sa_family == AF_INET6) {
1559         len = sizeof(addr_str);
1560         ret = WSAAddressToString(ip_addr->Address.lpSockaddr,
1561                                  ip_addr->Address.iSockaddrLength,
1562                                  NULL,
1563                                  addr_str,
1564                                  &len);
1565         if (ret != 0) {
1566             error_setg_win32(errp, WSAGetLastError(),
1567                 "failed address presentation form conversion");
1568             return NULL;
1569         }
1570         return g_strdup(addr_str);
1571     }
1572     return NULL;
1573 }
1574 
1575 static int64_t guest_ip_prefix(IP_ADAPTER_UNICAST_ADDRESS *ip_addr)
1576 {
1577     /* For Windows Vista/2008 and newer, use the OnLinkPrefixLength
1578      * field to obtain the prefix.
1579      */
1580     return ip_addr->OnLinkPrefixLength;
1581 }
1582 
1583 #define INTERFACE_PATH_BUF_SZ 512
1584 
1585 static DWORD get_interface_index(const char *guid)
1586 {
1587     ULONG index;
1588     DWORD status;
1589     wchar_t wbuf[INTERFACE_PATH_BUF_SZ];
1590     snwprintf(wbuf, INTERFACE_PATH_BUF_SZ, L"\\device\\tcpip_%s", guid);
1591     wbuf[INTERFACE_PATH_BUF_SZ - 1] = 0;
1592     status = GetAdapterIndex (wbuf, &index);
1593     if (status != NO_ERROR) {
1594         return (DWORD)~0;
1595     } else {
1596         return index;
1597     }
1598 }
1599 
1600 typedef NETIOAPI_API (WINAPI *GetIfEntry2Func)(PMIB_IF_ROW2 Row);
1601 
1602 static int guest_get_network_stats(const char *name,
1603                                    GuestNetworkInterfaceStat *stats)
1604 {
1605     OSVERSIONINFO os_ver;
1606 
1607     os_ver.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
1608     GetVersionEx(&os_ver);
1609     if (os_ver.dwMajorVersion >= 6) {
1610         MIB_IF_ROW2 a_mid_ifrow;
1611         GetIfEntry2Func getifentry2_ex;
1612         DWORD if_index = 0;
1613         HMODULE module = GetModuleHandle("iphlpapi");
1614         PVOID func = GetProcAddress(module, "GetIfEntry2");
1615 
1616         if (func == NULL) {
1617             return -1;
1618         }
1619 
1620         getifentry2_ex = (GetIfEntry2Func)func;
1621         if_index = get_interface_index(name);
1622         if (if_index == (DWORD)~0) {
1623             return -1;
1624         }
1625 
1626         memset(&a_mid_ifrow, 0, sizeof(a_mid_ifrow));
1627         a_mid_ifrow.InterfaceIndex = if_index;
1628         if (NO_ERROR == getifentry2_ex(&a_mid_ifrow)) {
1629             stats->rx_bytes = a_mid_ifrow.InOctets;
1630             stats->rx_packets = a_mid_ifrow.InUcastPkts;
1631             stats->rx_errs = a_mid_ifrow.InErrors;
1632             stats->rx_dropped = a_mid_ifrow.InDiscards;
1633             stats->tx_bytes = a_mid_ifrow.OutOctets;
1634             stats->tx_packets = a_mid_ifrow.OutUcastPkts;
1635             stats->tx_errs = a_mid_ifrow.OutErrors;
1636             stats->tx_dropped = a_mid_ifrow.OutDiscards;
1637             return 0;
1638         }
1639     }
1640     return -1;
1641 }
1642 
1643 GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp)
1644 {
1645     IP_ADAPTER_ADDRESSES *adptr_addrs, *addr;
1646     IP_ADAPTER_UNICAST_ADDRESS *ip_addr = NULL;
1647     GuestNetworkInterfaceList *head = NULL, **tail = &head;
1648     GuestIpAddressList *head_addr, **tail_addr;
1649     GuestNetworkInterface *info;
1650     GuestNetworkInterfaceStat *interface_stat = NULL;
1651     GuestIpAddress *address_item = NULL;
1652     unsigned char *mac_addr;
1653     char *addr_str;
1654     WORD wsa_version;
1655     WSADATA wsa_data;
1656     int ret;
1657 
1658     adptr_addrs = guest_get_adapters_addresses(errp);
1659     if (adptr_addrs == NULL) {
1660         return NULL;
1661     }
1662 
1663     /* Make WSA APIs available. */
1664     wsa_version = MAKEWORD(2, 2);
1665     ret = WSAStartup(wsa_version, &wsa_data);
1666     if (ret != 0) {
1667         error_setg_win32(errp, ret, "failed socket startup");
1668         goto out;
1669     }
1670 
1671     for (addr = adptr_addrs; addr; addr = addr->Next) {
1672         info = g_malloc0(sizeof(*info));
1673 
1674         QAPI_LIST_APPEND(tail, info);
1675 
1676         info->name = guest_wctomb_dup(addr->FriendlyName);
1677 
1678         if (addr->PhysicalAddressLength != 0) {
1679             mac_addr = addr->PhysicalAddress;
1680 
1681             info->hardware_address =
1682                 g_strdup_printf("%02x:%02x:%02x:%02x:%02x:%02x",
1683                                 (int) mac_addr[0], (int) mac_addr[1],
1684                                 (int) mac_addr[2], (int) mac_addr[3],
1685                                 (int) mac_addr[4], (int) mac_addr[5]);
1686 
1687             info->has_hardware_address = true;
1688         }
1689 
1690         head_addr = NULL;
1691         tail_addr = &head_addr;
1692         for (ip_addr = addr->FirstUnicastAddress;
1693                 ip_addr;
1694                 ip_addr = ip_addr->Next) {
1695             addr_str = guest_addr_to_str(ip_addr, errp);
1696             if (addr_str == NULL) {
1697                 continue;
1698             }
1699 
1700             address_item = g_malloc0(sizeof(*address_item));
1701 
1702             QAPI_LIST_APPEND(tail_addr, address_item);
1703 
1704             address_item->ip_address = addr_str;
1705             address_item->prefix = guest_ip_prefix(ip_addr);
1706             if (ip_addr->Address.lpSockaddr->sa_family == AF_INET) {
1707                 address_item->ip_address_type = GUEST_IP_ADDRESS_TYPE_IPV4;
1708             } else if (ip_addr->Address.lpSockaddr->sa_family == AF_INET6) {
1709                 address_item->ip_address_type = GUEST_IP_ADDRESS_TYPE_IPV6;
1710             }
1711         }
1712         if (head_addr) {
1713             info->has_ip_addresses = true;
1714             info->ip_addresses = head_addr;
1715         }
1716         if (!info->has_statistics) {
1717             interface_stat = g_malloc0(sizeof(*interface_stat));
1718             if (guest_get_network_stats(addr->AdapterName,
1719                 interface_stat) == -1) {
1720                 info->has_statistics = false;
1721                 g_free(interface_stat);
1722             } else {
1723                 info->statistics = interface_stat;
1724                 info->has_statistics = true;
1725             }
1726         }
1727     }
1728     WSACleanup();
1729 out:
1730     g_free(adptr_addrs);
1731     return head;
1732 }
1733 
1734 static int64_t filetime_to_ns(const FILETIME *tf)
1735 {
1736     return ((((int64_t)tf->dwHighDateTime << 32) | tf->dwLowDateTime)
1737             - W32_FT_OFFSET) * 100;
1738 }
1739 
1740 void qmp_guest_set_time(bool has_time, int64_t time_ns, Error **errp)
1741 {
1742     Error *local_err = NULL;
1743     SYSTEMTIME ts;
1744     FILETIME tf;
1745     LONGLONG time;
1746 
1747     if (!has_time) {
1748         /* Unfortunately, Windows libraries don't provide an easy way to access
1749          * RTC yet:
1750          *
1751          * https://msdn.microsoft.com/en-us/library/aa908981.aspx
1752          *
1753          * Instead, a workaround is to use the Windows win32tm command to
1754          * resync the time using the Windows Time service.
1755          */
1756         LPVOID msg_buffer;
1757         DWORD ret_flags;
1758 
1759         HRESULT hr = system("w32tm /resync /nowait");
1760 
1761         if (GetLastError() != 0) {
1762             strerror_s((LPTSTR) & msg_buffer, 0, errno);
1763             error_setg(errp, "system(...) failed: %s", (LPCTSTR)msg_buffer);
1764         } else if (hr != 0) {
1765             if (hr == HRESULT_FROM_WIN32(ERROR_SERVICE_NOT_ACTIVE)) {
1766                 error_setg(errp, "Windows Time service not running on the "
1767                                  "guest");
1768             } else {
1769                 if (!FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER |
1770                                    FORMAT_MESSAGE_FROM_SYSTEM |
1771                                    FORMAT_MESSAGE_IGNORE_INSERTS, NULL,
1772                                    (DWORD)hr, MAKELANGID(LANG_NEUTRAL,
1773                                    SUBLANG_DEFAULT), (LPTSTR) & msg_buffer, 0,
1774                                    NULL)) {
1775                     error_setg(errp, "w32tm failed with error (0x%lx), couldn'"
1776                                      "t retrieve error message", hr);
1777                 } else {
1778                     error_setg(errp, "w32tm failed with error (0x%lx): %s", hr,
1779                                (LPCTSTR)msg_buffer);
1780                     LocalFree(msg_buffer);
1781                 }
1782             }
1783         } else if (!InternetGetConnectedState(&ret_flags, 0)) {
1784             error_setg(errp, "No internet connection on guest, sync not "
1785                              "accurate");
1786         }
1787         return;
1788     }
1789 
1790     /* Validate time passed by user. */
1791     if (time_ns < 0 || time_ns / 100 > INT64_MAX - W32_FT_OFFSET) {
1792         error_setg(errp, "Time %" PRId64 "is invalid", time_ns);
1793         return;
1794     }
1795 
1796     time = time_ns / 100 + W32_FT_OFFSET;
1797 
1798     tf.dwLowDateTime = (DWORD) time;
1799     tf.dwHighDateTime = (DWORD) (time >> 32);
1800 
1801     if (!FileTimeToSystemTime(&tf, &ts)) {
1802         error_setg(errp, "Failed to convert system time %d",
1803                    (int)GetLastError());
1804         return;
1805     }
1806 
1807     acquire_privilege(SE_SYSTEMTIME_NAME, &local_err);
1808     if (local_err) {
1809         error_propagate(errp, local_err);
1810         return;
1811     }
1812 
1813     if (!SetSystemTime(&ts)) {
1814         error_setg(errp, "Failed to set time to guest: %d", (int)GetLastError());
1815         return;
1816     }
1817 }
1818 
1819 GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp)
1820 {
1821     PSYSTEM_LOGICAL_PROCESSOR_INFORMATION pslpi, ptr;
1822     DWORD length;
1823     GuestLogicalProcessorList *head, **tail;
1824     Error *local_err = NULL;
1825     int64_t current;
1826 
1827     ptr = pslpi = NULL;
1828     length = 0;
1829     current = 0;
1830     head = NULL;
1831     tail = &head;
1832 
1833     if ((GetLogicalProcessorInformation(pslpi, &length) == FALSE) &&
1834         (GetLastError() == ERROR_INSUFFICIENT_BUFFER) &&
1835         (length > sizeof(SYSTEM_LOGICAL_PROCESSOR_INFORMATION))) {
1836         ptr = pslpi = g_malloc0(length);
1837         if (GetLogicalProcessorInformation(pslpi, &length) == FALSE) {
1838             error_setg(&local_err, "Failed to get processor information: %d",
1839                        (int)GetLastError());
1840         }
1841     } else {
1842         error_setg(&local_err,
1843                    "Failed to get processor information buffer length: %d",
1844                    (int)GetLastError());
1845     }
1846 
1847     while ((local_err == NULL) && (length > 0)) {
1848         if (pslpi->Relationship == RelationProcessorCore) {
1849             ULONG_PTR cpu_bits = pslpi->ProcessorMask;
1850 
1851             while (cpu_bits > 0) {
1852                 if (!!(cpu_bits & 1)) {
1853                     GuestLogicalProcessor *vcpu;
1854 
1855                     vcpu = g_malloc0(sizeof *vcpu);
1856                     vcpu->logical_id = current++;
1857                     vcpu->online = true;
1858                     vcpu->has_can_offline = true;
1859 
1860                     QAPI_LIST_APPEND(tail, vcpu);
1861                 }
1862                 cpu_bits >>= 1;
1863             }
1864         }
1865         length -= sizeof(SYSTEM_LOGICAL_PROCESSOR_INFORMATION);
1866         pslpi++; /* next entry */
1867     }
1868 
1869     g_free(ptr);
1870 
1871     if (local_err == NULL) {
1872         if (head != NULL) {
1873             return head;
1874         }
1875         /* there's no guest with zero VCPUs */
1876         error_setg(&local_err, "Guest reported zero VCPUs");
1877     }
1878 
1879     qapi_free_GuestLogicalProcessorList(head);
1880     error_propagate(errp, local_err);
1881     return NULL;
1882 }
1883 
1884 int64_t qmp_guest_set_vcpus(GuestLogicalProcessorList *vcpus, Error **errp)
1885 {
1886     error_setg(errp, QERR_UNSUPPORTED);
1887     return -1;
1888 }
1889 
1890 static gchar *
1891 get_net_error_message(gint error)
1892 {
1893     HMODULE module = NULL;
1894     gchar *retval = NULL;
1895     wchar_t *msg = NULL;
1896     int flags;
1897     size_t nchars;
1898 
1899     flags = FORMAT_MESSAGE_ALLOCATE_BUFFER |
1900         FORMAT_MESSAGE_IGNORE_INSERTS |
1901         FORMAT_MESSAGE_FROM_SYSTEM;
1902 
1903     if (error >= NERR_BASE && error <= MAX_NERR) {
1904         module = LoadLibraryExW(L"netmsg.dll", NULL, LOAD_LIBRARY_AS_DATAFILE);
1905 
1906         if (module != NULL) {
1907             flags |= FORMAT_MESSAGE_FROM_HMODULE;
1908         }
1909     }
1910 
1911     FormatMessageW(flags, module, error, 0, (LPWSTR)&msg, 0, NULL);
1912 
1913     if (msg != NULL) {
1914         nchars = wcslen(msg);
1915 
1916         if (nchars >= 2 &&
1917             msg[nchars - 1] == L'\n' &&
1918             msg[nchars - 2] == L'\r') {
1919             msg[nchars - 2] = L'\0';
1920         }
1921 
1922         retval = g_utf16_to_utf8(msg, -1, NULL, NULL, NULL);
1923 
1924         LocalFree(msg);
1925     }
1926 
1927     if (module != NULL) {
1928         FreeLibrary(module);
1929     }
1930 
1931     return retval;
1932 }
1933 
1934 void qmp_guest_set_user_password(const char *username,
1935                                  const char *password,
1936                                  bool crypted,
1937                                  Error **errp)
1938 {
1939     NET_API_STATUS nas;
1940     char *rawpasswddata = NULL;
1941     size_t rawpasswdlen;
1942     wchar_t *user = NULL, *wpass = NULL;
1943     USER_INFO_1003 pi1003 = { 0, };
1944     GError *gerr = NULL;
1945 
1946     if (crypted) {
1947         error_setg(errp, QERR_UNSUPPORTED);
1948         return;
1949     }
1950 
1951     rawpasswddata = (char *)qbase64_decode(password, -1, &rawpasswdlen, errp);
1952     if (!rawpasswddata) {
1953         return;
1954     }
1955     rawpasswddata = g_renew(char, rawpasswddata, rawpasswdlen + 1);
1956     rawpasswddata[rawpasswdlen] = '\0';
1957 
1958     user = g_utf8_to_utf16(username, -1, NULL, NULL, &gerr);
1959     if (!user) {
1960         goto done;
1961     }
1962 
1963     wpass = g_utf8_to_utf16(rawpasswddata, -1, NULL, NULL, &gerr);
1964     if (!wpass) {
1965         goto done;
1966     }
1967 
1968     pi1003.usri1003_password = wpass;
1969     nas = NetUserSetInfo(NULL, user,
1970                          1003, (LPBYTE)&pi1003,
1971                          NULL);
1972 
1973     if (nas != NERR_Success) {
1974         gchar *msg = get_net_error_message(nas);
1975         error_setg(errp, "failed to set password: %s", msg);
1976         g_free(msg);
1977     }
1978 
1979 done:
1980     if (gerr) {
1981         error_setg(errp, QERR_QGA_COMMAND_FAILED, gerr->message);
1982         g_error_free(gerr);
1983     }
1984     g_free(user);
1985     g_free(wpass);
1986     g_free(rawpasswddata);
1987 }
1988 
1989 GuestMemoryBlockList *qmp_guest_get_memory_blocks(Error **errp)
1990 {
1991     error_setg(errp, QERR_UNSUPPORTED);
1992     return NULL;
1993 }
1994 
1995 GuestMemoryBlockResponseList *
1996 qmp_guest_set_memory_blocks(GuestMemoryBlockList *mem_blks, Error **errp)
1997 {
1998     error_setg(errp, QERR_UNSUPPORTED);
1999     return NULL;
2000 }
2001 
2002 GuestMemoryBlockInfo *qmp_guest_get_memory_block_info(Error **errp)
2003 {
2004     error_setg(errp, QERR_UNSUPPORTED);
2005     return NULL;
2006 }
2007 
2008 /* add unsupported commands to the blacklist */
2009 GList *ga_command_blacklist_init(GList *blacklist)
2010 {
2011     const char *list_unsupported[] = {
2012         "guest-suspend-hybrid",
2013         "guest-set-vcpus",
2014         "guest-get-memory-blocks", "guest-set-memory-blocks",
2015         "guest-get-memory-block-size", "guest-get-memory-block-info",
2016         NULL};
2017     char **p = (char **)list_unsupported;
2018 
2019     while (*p) {
2020         blacklist = g_list_append(blacklist, g_strdup(*p++));
2021     }
2022 
2023     if (!vss_init(true)) {
2024         g_debug("vss_init failed, vss commands are going to be disabled");
2025         const char *list[] = {
2026             "guest-get-fsinfo", "guest-fsfreeze-status",
2027             "guest-fsfreeze-freeze", "guest-fsfreeze-thaw", NULL};
2028         p = (char **)list;
2029 
2030         while (*p) {
2031             blacklist = g_list_append(blacklist, g_strdup(*p++));
2032         }
2033     }
2034 
2035     return blacklist;
2036 }
2037 
2038 /* register init/cleanup routines for stateful command groups */
2039 void ga_command_state_init(GAState *s, GACommandState *cs)
2040 {
2041     if (!vss_initialized()) {
2042         ga_command_state_add(cs, NULL, guest_fsfreeze_cleanup);
2043     }
2044 }
2045 
2046 /* MINGW is missing two fields: IncomingFrames & OutgoingFrames */
2047 typedef struct _GA_WTSINFOA {
2048     WTS_CONNECTSTATE_CLASS State;
2049     DWORD SessionId;
2050     DWORD IncomingBytes;
2051     DWORD OutgoingBytes;
2052     DWORD IncomingFrames;
2053     DWORD OutgoingFrames;
2054     DWORD IncomingCompressedBytes;
2055     DWORD OutgoingCompressedBy;
2056     CHAR WinStationName[WINSTATIONNAME_LENGTH];
2057     CHAR Domain[DOMAIN_LENGTH];
2058     CHAR UserName[USERNAME_LENGTH + 1];
2059     LARGE_INTEGER ConnectTime;
2060     LARGE_INTEGER DisconnectTime;
2061     LARGE_INTEGER LastInputTime;
2062     LARGE_INTEGER LogonTime;
2063     LARGE_INTEGER CurrentTime;
2064 
2065 } GA_WTSINFOA;
2066 
2067 GuestUserList *qmp_guest_get_users(Error **errp)
2068 {
2069 #define QGA_NANOSECONDS 10000000
2070 
2071     GHashTable *cache = NULL;
2072     GuestUserList *head = NULL, **tail = &head;
2073 
2074     DWORD buffer_size = 0, count = 0, i = 0;
2075     GA_WTSINFOA *info = NULL;
2076     WTS_SESSION_INFOA *entries = NULL;
2077     GuestUser *user = NULL;
2078     gpointer value = NULL;
2079     INT64 login = 0;
2080     double login_time = 0;
2081 
2082     cache = g_hash_table_new(g_str_hash, g_str_equal);
2083 
2084     if (WTSEnumerateSessionsA(NULL, 0, 1, &entries, &count)) {
2085         for (i = 0; i < count; ++i) {
2086             buffer_size = 0;
2087             info = NULL;
2088             if (WTSQuerySessionInformationA(
2089                 NULL,
2090                 entries[i].SessionId,
2091                 WTSSessionInfo,
2092                 (LPSTR *)&info,
2093                 &buffer_size
2094             )) {
2095 
2096                 if (strlen(info->UserName) == 0) {
2097                     WTSFreeMemory(info);
2098                     continue;
2099                 }
2100 
2101                 login = info->LogonTime.QuadPart;
2102                 login -= W32_FT_OFFSET;
2103                 login_time = ((double)login) / QGA_NANOSECONDS;
2104 
2105                 if (g_hash_table_contains(cache, info->UserName)) {
2106                     value = g_hash_table_lookup(cache, info->UserName);
2107                     user = (GuestUser *)value;
2108                     if (user->login_time > login_time) {
2109                         user->login_time = login_time;
2110                     }
2111                 } else {
2112                     user = g_new0(GuestUser, 1);
2113 
2114                     user->user = g_strdup(info->UserName);
2115                     user->domain = g_strdup(info->Domain);
2116                     user->has_domain = true;
2117 
2118                     user->login_time = login_time;
2119 
2120                     g_hash_table_add(cache, user->user);
2121 
2122                     QAPI_LIST_APPEND(tail, user);
2123                 }
2124             }
2125             WTSFreeMemory(info);
2126         }
2127         WTSFreeMemory(entries);
2128     }
2129     g_hash_table_destroy(cache);
2130     return head;
2131 }
2132 
2133 typedef struct _ga_matrix_lookup_t {
2134     int major;
2135     int minor;
2136     char const *version;
2137     char const *version_id;
2138 } ga_matrix_lookup_t;
2139 
2140 static ga_matrix_lookup_t const WIN_VERSION_MATRIX[2][7] = {
2141     {
2142         /* Desktop editions */
2143         { 5, 0, "Microsoft Windows 2000",   "2000"},
2144         { 5, 1, "Microsoft Windows XP",     "xp"},
2145         { 6, 0, "Microsoft Windows Vista",  "vista"},
2146         { 6, 1, "Microsoft Windows 7"       "7"},
2147         { 6, 2, "Microsoft Windows 8",      "8"},
2148         { 6, 3, "Microsoft Windows 8.1",    "8.1"},
2149         { 0, 0, 0}
2150     },{
2151         /* Server editions */
2152         { 5, 2, "Microsoft Windows Server 2003",        "2003"},
2153         { 6, 0, "Microsoft Windows Server 2008",        "2008"},
2154         { 6, 1, "Microsoft Windows Server 2008 R2",     "2008r2"},
2155         { 6, 2, "Microsoft Windows Server 2012",        "2012"},
2156         { 6, 3, "Microsoft Windows Server 2012 R2",     "2012r2"},
2157         { 0, 0, 0},
2158         { 0, 0, 0}
2159     }
2160 };
2161 
2162 typedef struct _ga_win_10_0_t {
2163     int first_build;
2164     char const *version;
2165     char const *version_id;
2166 } ga_win_10_0_t;
2167 
2168 static ga_win_10_0_t const WIN_10_0_SERVER_VERSION_MATRIX[4] = {
2169     {14393, "Microsoft Windows Server 2016",    "2016"},
2170     {17763, "Microsoft Windows Server 2019",    "2019"},
2171     {20344, "Microsoft Windows Server 2022",    "2022"},
2172     {0, 0}
2173 };
2174 
2175 static ga_win_10_0_t const WIN_10_0_CLIENT_VERSION_MATRIX[3] = {
2176     {10240, "Microsoft Windows 10",    "10"},
2177     {22000, "Microsoft Windows 11",    "11"},
2178     {0, 0}
2179 };
2180 
2181 static void ga_get_win_version(RTL_OSVERSIONINFOEXW *info, Error **errp)
2182 {
2183     typedef NTSTATUS(WINAPI *rtl_get_version_t)(
2184         RTL_OSVERSIONINFOEXW *os_version_info_ex);
2185 
2186     info->dwOSVersionInfoSize = sizeof(RTL_OSVERSIONINFOEXW);
2187 
2188     HMODULE module = GetModuleHandle("ntdll");
2189     PVOID fun = GetProcAddress(module, "RtlGetVersion");
2190     if (fun == NULL) {
2191         error_setg(errp, QERR_QGA_COMMAND_FAILED,
2192             "Failed to get address of RtlGetVersion");
2193         return;
2194     }
2195 
2196     rtl_get_version_t rtl_get_version = (rtl_get_version_t)fun;
2197     rtl_get_version(info);
2198     return;
2199 }
2200 
2201 static char *ga_get_win_name(OSVERSIONINFOEXW const *os_version, bool id)
2202 {
2203     DWORD major = os_version->dwMajorVersion;
2204     DWORD minor = os_version->dwMinorVersion;
2205     DWORD build = os_version->dwBuildNumber;
2206     int tbl_idx = (os_version->wProductType != VER_NT_WORKSTATION);
2207     ga_matrix_lookup_t const *table = WIN_VERSION_MATRIX[tbl_idx];
2208     ga_win_10_0_t const *win_10_0_table = tbl_idx ?
2209         WIN_10_0_SERVER_VERSION_MATRIX : WIN_10_0_CLIENT_VERSION_MATRIX;
2210     ga_win_10_0_t const *win_10_0_version = NULL;
2211     while (table->version != NULL) {
2212         if (major == 10 && minor == 0) {
2213             while (win_10_0_table->version != NULL) {
2214                 if (build >= win_10_0_table->first_build) {
2215                     win_10_0_version = win_10_0_table;
2216                 }
2217                 win_10_0_table++;
2218             }
2219             if (win_10_0_table) {
2220                 if (id) {
2221                     return g_strdup(win_10_0_version->version_id);
2222                 } else {
2223                     return g_strdup(win_10_0_version->version);
2224                 }
2225             }
2226         } else if (major == table->major && minor == table->minor) {
2227             if (id) {
2228                 return g_strdup(table->version_id);
2229             } else {
2230                 return g_strdup(table->version);
2231             }
2232         }
2233         ++table;
2234     }
2235     slog("failed to lookup Windows version: major=%lu, minor=%lu",
2236         major, minor);
2237     return g_strdup("N/A");
2238 }
2239 
2240 static char *ga_get_win_product_name(Error **errp)
2241 {
2242     HKEY key = INVALID_HANDLE_VALUE;
2243     DWORD size = 128;
2244     char *result = g_malloc0(size);
2245     LONG err = ERROR_SUCCESS;
2246 
2247     err = RegOpenKeyA(HKEY_LOCAL_MACHINE,
2248                       "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion",
2249                       &key);
2250     if (err != ERROR_SUCCESS) {
2251         error_setg_win32(errp, err, "failed to open registry key");
2252         g_free(result);
2253         return NULL;
2254     }
2255 
2256     err = RegQueryValueExA(key, "ProductName", NULL, NULL,
2257                             (LPBYTE)result, &size);
2258     if (err == ERROR_MORE_DATA) {
2259         slog("ProductName longer than expected (%lu bytes), retrying",
2260                 size);
2261         g_free(result);
2262         result = NULL;
2263         if (size > 0) {
2264             result = g_malloc0(size);
2265             err = RegQueryValueExA(key, "ProductName", NULL, NULL,
2266                                     (LPBYTE)result, &size);
2267         }
2268     }
2269     if (err != ERROR_SUCCESS) {
2270         error_setg_win32(errp, err, "failed to retrive ProductName");
2271         goto fail;
2272     }
2273 
2274     RegCloseKey(key);
2275     return result;
2276 
2277 fail:
2278     if (key != INVALID_HANDLE_VALUE) {
2279         RegCloseKey(key);
2280     }
2281     g_free(result);
2282     return NULL;
2283 }
2284 
2285 static char *ga_get_current_arch(void)
2286 {
2287     SYSTEM_INFO info;
2288     GetNativeSystemInfo(&info);
2289     char *result = NULL;
2290     switch (info.wProcessorArchitecture) {
2291     case PROCESSOR_ARCHITECTURE_AMD64:
2292         result = g_strdup("x86_64");
2293         break;
2294     case PROCESSOR_ARCHITECTURE_ARM:
2295         result = g_strdup("arm");
2296         break;
2297     case PROCESSOR_ARCHITECTURE_IA64:
2298         result = g_strdup("ia64");
2299         break;
2300     case PROCESSOR_ARCHITECTURE_INTEL:
2301         result = g_strdup("x86");
2302         break;
2303     case PROCESSOR_ARCHITECTURE_UNKNOWN:
2304     default:
2305         slog("unknown processor architecture 0x%0x",
2306             info.wProcessorArchitecture);
2307         result = g_strdup("unknown");
2308         break;
2309     }
2310     return result;
2311 }
2312 
2313 GuestOSInfo *qmp_guest_get_osinfo(Error **errp)
2314 {
2315     Error *local_err = NULL;
2316     OSVERSIONINFOEXW os_version = {0};
2317     bool server;
2318     char *product_name;
2319     GuestOSInfo *info;
2320 
2321     ga_get_win_version(&os_version, &local_err);
2322     if (local_err) {
2323         error_propagate(errp, local_err);
2324         return NULL;
2325     }
2326 
2327     server = os_version.wProductType != VER_NT_WORKSTATION;
2328     product_name = ga_get_win_product_name(errp);
2329     if (product_name == NULL) {
2330         return NULL;
2331     }
2332 
2333     info = g_new0(GuestOSInfo, 1);
2334 
2335     info->has_kernel_version = true;
2336     info->kernel_version = g_strdup_printf("%lu.%lu",
2337         os_version.dwMajorVersion,
2338         os_version.dwMinorVersion);
2339     info->has_kernel_release = true;
2340     info->kernel_release = g_strdup_printf("%lu",
2341         os_version.dwBuildNumber);
2342     info->has_machine = true;
2343     info->machine = ga_get_current_arch();
2344 
2345     info->has_id = true;
2346     info->id = g_strdup("mswindows");
2347     info->has_name = true;
2348     info->name = g_strdup("Microsoft Windows");
2349     info->has_pretty_name = true;
2350     info->pretty_name = product_name;
2351     info->has_version = true;
2352     info->version = ga_get_win_name(&os_version, false);
2353     info->has_version_id = true;
2354     info->version_id = ga_get_win_name(&os_version, true);
2355     info->has_variant = true;
2356     info->variant = g_strdup(server ? "server" : "client");
2357     info->has_variant_id = true;
2358     info->variant_id = g_strdup(server ? "server" : "client");
2359 
2360     return info;
2361 }
2362 
2363 /*
2364  * Safely get device property. Returned strings are using wide characters.
2365  * Caller is responsible for freeing the buffer.
2366  */
2367 static LPBYTE cm_get_property(DEVINST devInst, const DEVPROPKEY *propName,
2368     PDEVPROPTYPE propType)
2369 {
2370     CONFIGRET cr;
2371     g_autofree LPBYTE buffer = NULL;
2372     ULONG buffer_len = 0;
2373 
2374     /* First query for needed space */
2375     cr = CM_Get_DevNode_PropertyW(devInst, propName, propType,
2376         buffer, &buffer_len, 0);
2377     if (cr != CR_SUCCESS && cr != CR_BUFFER_SMALL) {
2378 
2379         slog("failed to get property size, error=0x%lx", cr);
2380         return NULL;
2381     }
2382     buffer = g_new0(BYTE, buffer_len + 1);
2383     cr = CM_Get_DevNode_PropertyW(devInst, propName, propType,
2384         buffer, &buffer_len, 0);
2385     if (cr != CR_SUCCESS) {
2386         slog("failed to get device property, error=0x%lx", cr);
2387         return NULL;
2388     }
2389     return g_steal_pointer(&buffer);
2390 }
2391 
2392 static GStrv ga_get_hardware_ids(DEVINST devInstance)
2393 {
2394     GArray *values = NULL;
2395     DEVPROPTYPE cm_type;
2396     LPWSTR id;
2397     g_autofree LPWSTR property = (LPWSTR)cm_get_property(devInstance,
2398         &qga_DEVPKEY_Device_HardwareIds, &cm_type);
2399     if (property == NULL) {
2400         slog("failed to get hardware IDs");
2401         return NULL;
2402     }
2403     if (*property == '\0') {
2404         /* empty list */
2405         return NULL;
2406     }
2407     values = g_array_new(TRUE, TRUE, sizeof(gchar *));
2408     for (id = property; '\0' != *id; id += lstrlenW(id) + 1) {
2409         gchar *id8 = g_utf16_to_utf8(id, -1, NULL, NULL, NULL);
2410         g_array_append_val(values, id8);
2411     }
2412     return (GStrv)g_array_free(values, FALSE);
2413 }
2414 
2415 /*
2416  * https://docs.microsoft.com/en-us/windows-hardware/drivers/install/identifiers-for-pci-devices
2417  */
2418 #define DEVICE_PCI_RE "PCI\\\\VEN_(1AF4|1B36)&DEV_([0-9A-B]{4})(&|$)"
2419 
2420 GuestDeviceInfoList *qmp_guest_get_devices(Error **errp)
2421 {
2422     GuestDeviceInfoList *head = NULL, **tail = &head;
2423     HDEVINFO dev_info = INVALID_HANDLE_VALUE;
2424     SP_DEVINFO_DATA dev_info_data;
2425     int i, j;
2426     GError *gerr = NULL;
2427     g_autoptr(GRegex) device_pci_re = NULL;
2428     DEVPROPTYPE cm_type;
2429 
2430     device_pci_re = g_regex_new(DEVICE_PCI_RE,
2431         G_REGEX_ANCHORED | G_REGEX_OPTIMIZE, 0,
2432         &gerr);
2433     g_assert(device_pci_re != NULL);
2434 
2435     dev_info_data.cbSize = sizeof(SP_DEVINFO_DATA);
2436     dev_info = SetupDiGetClassDevs(0, 0, 0, DIGCF_PRESENT | DIGCF_ALLCLASSES);
2437     if (dev_info == INVALID_HANDLE_VALUE) {
2438         error_setg(errp, "failed to get device tree");
2439         return NULL;
2440     }
2441 
2442     slog("enumerating devices");
2443     for (i = 0; SetupDiEnumDeviceInfo(dev_info, i, &dev_info_data); i++) {
2444         bool skip = true;
2445         g_autofree LPWSTR name = NULL;
2446         g_autofree LPFILETIME date = NULL;
2447         g_autofree LPWSTR version = NULL;
2448         g_auto(GStrv) hw_ids = NULL;
2449         g_autoptr(GuestDeviceInfo) device = g_new0(GuestDeviceInfo, 1);
2450         g_autofree char *vendor_id = NULL;
2451         g_autofree char *device_id = NULL;
2452 
2453         name = (LPWSTR)cm_get_property(dev_info_data.DevInst,
2454             &qga_DEVPKEY_NAME, &cm_type);
2455         if (name == NULL) {
2456             slog("failed to get device description");
2457             continue;
2458         }
2459         device->driver_name = g_utf16_to_utf8(name, -1, NULL, NULL, NULL);
2460         if (device->driver_name == NULL) {
2461             error_setg(errp, "conversion to utf8 failed (driver name)");
2462             return NULL;
2463         }
2464         slog("querying device: %s", device->driver_name);
2465         hw_ids = ga_get_hardware_ids(dev_info_data.DevInst);
2466         if (hw_ids == NULL) {
2467             continue;
2468         }
2469         for (j = 0; hw_ids[j] != NULL; j++) {
2470             g_autoptr(GMatchInfo) match_info;
2471             GuestDeviceIdPCI *id;
2472             if (!g_regex_match(device_pci_re, hw_ids[j], 0, &match_info)) {
2473                 continue;
2474             }
2475             skip = false;
2476 
2477             vendor_id = g_match_info_fetch(match_info, 1);
2478             device_id = g_match_info_fetch(match_info, 2);
2479 
2480             device->id = g_new0(GuestDeviceId, 1);
2481             device->has_id = true;
2482             device->id->type = GUEST_DEVICE_TYPE_PCI;
2483             id = &device->id->u.pci;
2484             id->vendor_id = g_ascii_strtoull(vendor_id, NULL, 16);
2485             id->device_id = g_ascii_strtoull(device_id, NULL, 16);
2486 
2487             break;
2488         }
2489         if (skip) {
2490             continue;
2491         }
2492 
2493         version = (LPWSTR)cm_get_property(dev_info_data.DevInst,
2494             &qga_DEVPKEY_Device_DriverVersion, &cm_type);
2495         if (version == NULL) {
2496             slog("failed to get driver version");
2497             continue;
2498         }
2499         device->driver_version = g_utf16_to_utf8(version, -1, NULL,
2500             NULL, NULL);
2501         if (device->driver_version == NULL) {
2502             error_setg(errp, "conversion to utf8 failed (driver version)");
2503             return NULL;
2504         }
2505         device->has_driver_version = true;
2506 
2507         date = (LPFILETIME)cm_get_property(dev_info_data.DevInst,
2508             &qga_DEVPKEY_Device_DriverDate, &cm_type);
2509         if (date == NULL) {
2510             slog("failed to get driver date");
2511             continue;
2512         }
2513         device->driver_date = filetime_to_ns(date);
2514         device->has_driver_date = true;
2515 
2516         slog("driver: %s\ndriver version: %" PRId64 ",%s\n",
2517              device->driver_name, device->driver_date,
2518              device->driver_version);
2519         QAPI_LIST_APPEND(tail, g_steal_pointer(&device));
2520     }
2521 
2522     if (dev_info != INVALID_HANDLE_VALUE) {
2523         SetupDiDestroyDeviceInfoList(dev_info);
2524     }
2525     return head;
2526 }
2527 
2528 char *qga_get_host_name(Error **errp)
2529 {
2530     wchar_t tmp[MAX_COMPUTERNAME_LENGTH + 1];
2531     DWORD size = G_N_ELEMENTS(tmp);
2532 
2533     if (GetComputerNameW(tmp, &size) == 0) {
2534         error_setg_win32(errp, GetLastError(), "failed close handle");
2535         return NULL;
2536     }
2537 
2538     return g_utf16_to_utf8(tmp, size, NULL, NULL, NULL);
2539 }
2540 
2541 GuestDiskStatsInfoList *qmp_guest_get_diskstats(Error **errp)
2542 {
2543     error_setg(errp, QERR_UNSUPPORTED);
2544     return NULL;
2545 }
2546 
2547 GuestCpuStatsList *qmp_guest_get_cpustats(Error **errp)
2548 {
2549     error_setg(errp, QERR_UNSUPPORTED);
2550     return NULL;
2551 }
2552