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 #include <pdh.h>
31
32 #include "guest-agent-core.h"
33 #include "vss-win32.h"
34 #include "qga-qapi-commands.h"
35 #include "qapi/error.h"
36 #include "qapi/qmp/qerror.h"
37 #include "qemu/queue.h"
38 #include "qemu/host-utils.h"
39 #include "qemu/base64.h"
40 #include "commands-common.h"
41
42 /*
43 * The following should be in devpkey.h, but it isn't. The key names were
44 * prefixed to avoid (future) name clashes. Once the definitions get into
45 * mingw the following lines can be removed.
46 */
47 DEFINE_DEVPROPKEY(qga_DEVPKEY_NAME, 0xb725f130, 0x47ef, 0x101a, 0xa5,
48 0xf1, 0x02, 0x60, 0x8c, 0x9e, 0xeb, 0xac, 10);
49 /* DEVPROP_TYPE_STRING */
50 DEFINE_DEVPROPKEY(qga_DEVPKEY_Device_HardwareIds, 0xa45c254e, 0xdf1c,
51 0x4efd, 0x80, 0x20, 0x67, 0xd1, 0x46, 0xa8, 0x50, 0xe0, 3);
52 /* DEVPROP_TYPE_STRING_LIST */
53 DEFINE_DEVPROPKEY(qga_DEVPKEY_Device_DriverDate, 0xa8b865dd, 0x2e3d,
54 0x4094, 0xad, 0x97, 0xe5, 0x93, 0xa7, 0xc, 0x75, 0xd6, 2);
55 /* DEVPROP_TYPE_FILETIME */
56 DEFINE_DEVPROPKEY(qga_DEVPKEY_Device_DriverVersion, 0xa8b865dd, 0x2e3d,
57 0x4094, 0xad, 0x97, 0xe5, 0x93, 0xa7, 0xc, 0x75, 0xd6, 3);
58 /* DEVPROP_TYPE_STRING */
59 /* The CM_Get_DevNode_PropertyW prototype is only sometimes in cfgmgr32.h */
60 #ifndef CM_Get_DevNode_Property
61 #pragma GCC diagnostic push
62 #pragma GCC diagnostic ignored "-Wredundant-decls"
63 CMAPI CONFIGRET WINAPI CM_Get_DevNode_PropertyW(
64 DEVINST dnDevInst,
65 CONST DEVPROPKEY * PropertyKey,
66 DEVPROPTYPE * PropertyType,
67 PBYTE PropertyBuffer,
68 PULONG PropertyBufferSize,
69 ULONG ulFlags
70 );
71 #define CM_Get_DevNode_Property CM_Get_DevNode_PropertyW
72 #pragma GCC diagnostic pop
73 #endif
74
75 #ifndef SHTDN_REASON_FLAG_PLANNED
76 #define SHTDN_REASON_FLAG_PLANNED 0x80000000
77 #endif
78
79 /* multiple of 100 nanoseconds elapsed between windows baseline
80 * (1/1/1601) and Unix Epoch (1/1/1970), accounting for leap years */
81 #define W32_FT_OFFSET (10000000ULL * 60 * 60 * 24 * \
82 (365 * (1970 - 1601) + \
83 (1970 - 1601) / 4 - 3))
84
85 #define INVALID_SET_FILE_POINTER ((DWORD)-1)
86
87 struct GuestFileHandle {
88 int64_t id;
89 HANDLE fh;
90 QTAILQ_ENTRY(GuestFileHandle) next;
91 };
92
93 static struct {
94 QTAILQ_HEAD(, GuestFileHandle) filehandles;
95 } guest_file_state = {
96 .filehandles = QTAILQ_HEAD_INITIALIZER(guest_file_state.filehandles),
97 };
98
99 #define FILE_GENERIC_APPEND (FILE_GENERIC_WRITE & ~FILE_WRITE_DATA)
100
101 typedef struct OpenFlags {
102 const char *forms;
103 DWORD desired_access;
104 DWORD creation_disposition;
105 } OpenFlags;
106 static OpenFlags guest_file_open_modes[] = {
107 {"r", GENERIC_READ, OPEN_EXISTING},
108 {"rb", GENERIC_READ, OPEN_EXISTING},
109 {"w", GENERIC_WRITE, CREATE_ALWAYS},
110 {"wb", GENERIC_WRITE, CREATE_ALWAYS},
111 {"a", FILE_GENERIC_APPEND, OPEN_ALWAYS },
112 {"r+", GENERIC_WRITE | GENERIC_READ, OPEN_EXISTING},
113 {"rb+", GENERIC_WRITE | GENERIC_READ, OPEN_EXISTING},
114 {"r+b", GENERIC_WRITE | GENERIC_READ, OPEN_EXISTING},
115 {"w+", GENERIC_WRITE | GENERIC_READ, CREATE_ALWAYS},
116 {"wb+", GENERIC_WRITE | GENERIC_READ, CREATE_ALWAYS},
117 {"w+b", GENERIC_WRITE | GENERIC_READ, CREATE_ALWAYS},
118 {"a+", FILE_GENERIC_APPEND | GENERIC_READ, OPEN_ALWAYS },
119 {"ab+", FILE_GENERIC_APPEND | GENERIC_READ, OPEN_ALWAYS },
120 {"a+b", FILE_GENERIC_APPEND | GENERIC_READ, OPEN_ALWAYS }
121 };
122
123 /*
124 * We use an exponentially weighted moving average, just like Unix systems do
125 * https://en.wikipedia.org/wiki/Load_(computing)#Unix-style_load_calculation
126 *
127 * These constants serve as the damping factor and are calculated with
128 * 1 / exp(sampling interval in seconds / window size in seconds)
129 *
130 * This formula comes from linux's include/linux/sched/loadavg.h
131 * https://github.com/torvalds/linux/blob/345671ea0f9258f410eb057b9ced9cefbbe5dc78/include/linux/sched/loadavg.h#L20-L23
132 */
133 #define LOADAVG_FACTOR_1F 0.9200444146293232478931553241
134 #define LOADAVG_FACTOR_5F 0.9834714538216174894737477501
135 #define LOADAVG_FACTOR_15F 0.9944598480048967508795473394
136 /*
137 * The time interval in seconds between taking load counts, same as Linux
138 */
139 #define LOADAVG_SAMPLING_INTERVAL 5
140
141 double load_avg_1m;
142 double load_avg_5m;
143 double load_avg_15m;
144
145 #define debug_error(msg) do { \
146 char *suffix = g_win32_error_message(GetLastError()); \
147 g_debug("%s: %s", (msg), suffix); \
148 g_free(suffix); \
149 } while (0)
150
find_open_flag(const char * mode_str)151 static OpenFlags *find_open_flag(const char *mode_str)
152 {
153 int mode;
154 Error **errp = NULL;
155
156 for (mode = 0; mode < ARRAY_SIZE(guest_file_open_modes); ++mode) {
157 OpenFlags *flags = guest_file_open_modes + mode;
158
159 if (strcmp(flags->forms, mode_str) == 0) {
160 return flags;
161 }
162 }
163
164 error_setg(errp, "invalid file open mode '%s'", mode_str);
165 return NULL;
166 }
167
guest_file_handle_add(HANDLE fh,Error ** errp)168 static int64_t guest_file_handle_add(HANDLE fh, Error **errp)
169 {
170 GuestFileHandle *gfh;
171 int64_t handle;
172
173 handle = ga_get_fd_handle(ga_state, errp);
174 if (handle < 0) {
175 return -1;
176 }
177 gfh = g_new0(GuestFileHandle, 1);
178 gfh->id = handle;
179 gfh->fh = fh;
180 QTAILQ_INSERT_TAIL(&guest_file_state.filehandles, gfh, next);
181
182 return handle;
183 }
184
guest_file_handle_find(int64_t id,Error ** errp)185 GuestFileHandle *guest_file_handle_find(int64_t id, Error **errp)
186 {
187 GuestFileHandle *gfh;
188 QTAILQ_FOREACH(gfh, &guest_file_state.filehandles, next) {
189 if (gfh->id == id) {
190 return gfh;
191 }
192 }
193 error_setg(errp, "handle '%" PRId64 "' has not been found", id);
194 return NULL;
195 }
196
handle_set_nonblocking(HANDLE fh)197 static void handle_set_nonblocking(HANDLE fh)
198 {
199 DWORD file_type, pipe_state;
200 file_type = GetFileType(fh);
201 if (file_type != FILE_TYPE_PIPE) {
202 return;
203 }
204 /* If file_type == FILE_TYPE_PIPE, according to MSDN
205 * the specified file is socket or named pipe */
206 if (!GetNamedPipeHandleState(fh, &pipe_state, NULL,
207 NULL, NULL, NULL, 0)) {
208 return;
209 }
210 /* The fd is named pipe fd */
211 if (pipe_state & PIPE_NOWAIT) {
212 return;
213 }
214
215 pipe_state |= PIPE_NOWAIT;
216 SetNamedPipeHandleState(fh, &pipe_state, NULL, NULL);
217 }
218
qmp_guest_file_open(const char * path,const char * mode,Error ** errp)219 int64_t qmp_guest_file_open(const char *path, const char *mode, Error **errp)
220 {
221 int64_t fd = -1;
222 HANDLE fh;
223 HANDLE templ_file = NULL;
224 DWORD share_mode = FILE_SHARE_READ;
225 DWORD flags_and_attr = FILE_ATTRIBUTE_NORMAL;
226 LPSECURITY_ATTRIBUTES sa_attr = NULL;
227 OpenFlags *guest_flags;
228 GError *gerr = NULL;
229 wchar_t *w_path = NULL;
230
231 if (!mode) {
232 mode = "r";
233 }
234 slog("guest-file-open called, filepath: %s, mode: %s", path, mode);
235 guest_flags = find_open_flag(mode);
236 if (guest_flags == NULL) {
237 error_setg(errp, "invalid file open mode");
238 goto done;
239 }
240
241 w_path = g_utf8_to_utf16(path, -1, NULL, NULL, &gerr);
242 if (!w_path) {
243 error_setg(errp, "can't convert 'path' to UTF-16: %s",
244 gerr->message);
245 g_error_free(gerr);
246 goto done;
247 }
248
249 fh = CreateFileW(w_path, guest_flags->desired_access, share_mode, sa_attr,
250 guest_flags->creation_disposition, flags_and_attr,
251 templ_file);
252 if (fh == INVALID_HANDLE_VALUE) {
253 error_setg_win32(errp, GetLastError(), "failed to open file '%s'",
254 path);
255 goto done;
256 }
257
258 /* set fd non-blocking to avoid common use cases (like reading from a
259 * named pipe) from hanging the agent
260 */
261 handle_set_nonblocking(fh);
262
263 fd = guest_file_handle_add(fh, errp);
264 if (fd < 0) {
265 CloseHandle(fh);
266 error_setg(errp, "failed to add handle to qmp handle table");
267 goto done;
268 }
269
270 slog("guest-file-open, handle: % " PRId64, fd);
271
272 done:
273 g_free(w_path);
274 return fd;
275 }
276
qmp_guest_file_close(int64_t handle,Error ** errp)277 void qmp_guest_file_close(int64_t handle, Error **errp)
278 {
279 bool ret;
280 GuestFileHandle *gfh = guest_file_handle_find(handle, errp);
281 slog("guest-file-close called, handle: %" PRId64, handle);
282 if (gfh == NULL) {
283 return;
284 }
285 ret = CloseHandle(gfh->fh);
286 if (!ret) {
287 error_setg_win32(errp, GetLastError(), "failed close handle");
288 return;
289 }
290
291 QTAILQ_REMOVE(&guest_file_state.filehandles, gfh, next);
292 g_free(gfh);
293 }
294
acquire_privilege(const char * name,Error ** errp)295 static void acquire_privilege(const char *name, Error **errp)
296 {
297 HANDLE token = NULL;
298 TOKEN_PRIVILEGES priv;
299
300 if (OpenProcessToken(GetCurrentProcess(),
301 TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &token))
302 {
303 if (!LookupPrivilegeValue(NULL, name, &priv.Privileges[0].Luid)) {
304 error_setg(errp, "no luid for requested privilege");
305 goto out;
306 }
307
308 priv.PrivilegeCount = 1;
309 priv.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
310
311 if (!AdjustTokenPrivileges(token, FALSE, &priv, 0, NULL, 0)) {
312 error_setg(errp, "unable to acquire requested privilege");
313 goto out;
314 }
315
316 } else {
317 error_setg(errp, "failed to open privilege token");
318 }
319
320 out:
321 if (token) {
322 CloseHandle(token);
323 }
324 }
325
execute_async(DWORD WINAPI (* func)(LPVOID),LPVOID opaque,Error ** errp)326 static void execute_async(DWORD WINAPI (*func)(LPVOID), LPVOID opaque,
327 Error **errp)
328 {
329 HANDLE thread = CreateThread(NULL, 0, func, opaque, 0, NULL);
330 if (!thread) {
331 error_setg(errp, "failed to dispatch asynchronous command");
332 }
333 }
334
qmp_guest_shutdown(const char * mode,Error ** errp)335 void qmp_guest_shutdown(const char *mode, Error **errp)
336 {
337 Error *local_err = NULL;
338 UINT shutdown_flag = EWX_FORCE;
339
340 slog("guest-shutdown called, mode: %s", mode);
341
342 if (!mode || strcmp(mode, "powerdown") == 0) {
343 shutdown_flag |= EWX_POWEROFF;
344 } else if (strcmp(mode, "halt") == 0) {
345 shutdown_flag |= EWX_SHUTDOWN;
346 } else if (strcmp(mode, "reboot") == 0) {
347 shutdown_flag |= EWX_REBOOT;
348 } else {
349 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "mode",
350 "'halt', 'powerdown', or 'reboot'");
351 return;
352 }
353
354 /* Request a shutdown privilege, but try to shut down the system
355 anyway. */
356 acquire_privilege(SE_SHUTDOWN_NAME, &local_err);
357 if (local_err) {
358 error_propagate(errp, local_err);
359 return;
360 }
361
362 if (!ExitWindowsEx(shutdown_flag, SHTDN_REASON_FLAG_PLANNED)) {
363 g_autofree gchar *emsg = g_win32_error_message(GetLastError());
364 slog("guest-shutdown failed: %s", emsg);
365 error_setg_win32(errp, GetLastError(), "guest-shutdown failed");
366 }
367 }
368
guest_file_read_unsafe(GuestFileHandle * gfh,int64_t count,Error ** errp)369 GuestFileRead *guest_file_read_unsafe(GuestFileHandle *gfh,
370 int64_t count, Error **errp)
371 {
372 GuestFileRead *read_data = NULL;
373 guchar *buf;
374 HANDLE fh = gfh->fh;
375 bool is_ok;
376 DWORD read_count;
377
378 buf = g_malloc0(count + 1);
379 is_ok = ReadFile(fh, buf, count, &read_count, NULL);
380 if (!is_ok) {
381 error_setg_win32(errp, GetLastError(), "failed to read file");
382 } else {
383 buf[read_count] = 0;
384 read_data = g_new0(GuestFileRead, 1);
385 read_data->count = (size_t)read_count;
386 read_data->eof = read_count == 0;
387
388 if (read_count != 0) {
389 read_data->buf_b64 = g_base64_encode(buf, read_count);
390 }
391 }
392 g_free(buf);
393
394 return read_data;
395 }
396
qmp_guest_file_write(int64_t handle,const char * buf_b64,bool has_count,int64_t count,Error ** errp)397 GuestFileWrite *qmp_guest_file_write(int64_t handle, const char *buf_b64,
398 bool has_count, int64_t count,
399 Error **errp)
400 {
401 GuestFileWrite *write_data = NULL;
402 guchar *buf;
403 gsize buf_len;
404 bool is_ok;
405 DWORD write_count;
406 GuestFileHandle *gfh = guest_file_handle_find(handle, errp);
407 HANDLE fh;
408
409 if (!gfh) {
410 return NULL;
411 }
412 fh = gfh->fh;
413 buf = qbase64_decode(buf_b64, -1, &buf_len, errp);
414 if (!buf) {
415 return NULL;
416 }
417
418 if (!has_count) {
419 count = buf_len;
420 } else if (count < 0 || count > buf_len) {
421 error_setg(errp, "value '%" PRId64
422 "' is invalid for argument count", count);
423 goto done;
424 }
425
426 is_ok = WriteFile(fh, buf, count, &write_count, NULL);
427 if (!is_ok) {
428 error_setg_win32(errp, GetLastError(), "failed to write to file");
429 slog("guest-file-write-failed, handle: %" PRId64, handle);
430 } else {
431 write_data = g_new0(GuestFileWrite, 1);
432 write_data->count = (size_t) write_count;
433 }
434
435 done:
436 g_free(buf);
437 return write_data;
438 }
439
qmp_guest_file_seek(int64_t handle,int64_t offset,GuestFileWhence * whence_code,Error ** errp)440 GuestFileSeek *qmp_guest_file_seek(int64_t handle, int64_t offset,
441 GuestFileWhence *whence_code,
442 Error **errp)
443 {
444 GuestFileHandle *gfh;
445 GuestFileSeek *seek_data;
446 HANDLE fh;
447 LARGE_INTEGER new_pos, off_pos;
448 off_pos.QuadPart = offset;
449 BOOL res;
450 int whence;
451 Error *err = NULL;
452
453 gfh = guest_file_handle_find(handle, errp);
454 if (!gfh) {
455 return NULL;
456 }
457
458 /* We stupidly exposed 'whence':'int' in our qapi */
459 whence = ga_parse_whence(whence_code, &err);
460 if (err) {
461 error_propagate(errp, err);
462 return NULL;
463 }
464
465 fh = gfh->fh;
466 res = SetFilePointerEx(fh, off_pos, &new_pos, whence);
467 if (!res) {
468 error_setg_win32(errp, GetLastError(), "failed to seek file");
469 return NULL;
470 }
471 seek_data = g_new0(GuestFileSeek, 1);
472 seek_data->position = new_pos.QuadPart;
473 return seek_data;
474 }
475
qmp_guest_file_flush(int64_t handle,Error ** errp)476 void qmp_guest_file_flush(int64_t handle, Error **errp)
477 {
478 HANDLE fh;
479 GuestFileHandle *gfh = guest_file_handle_find(handle, errp);
480 if (!gfh) {
481 return;
482 }
483
484 fh = gfh->fh;
485 if (!FlushFileBuffers(fh)) {
486 error_setg_win32(errp, GetLastError(), "failed to flush file");
487 }
488 }
489
490 static GuestDiskBusType win2qemu[] = {
491 [BusTypeUnknown] = GUEST_DISK_BUS_TYPE_UNKNOWN,
492 [BusTypeScsi] = GUEST_DISK_BUS_TYPE_SCSI,
493 [BusTypeAtapi] = GUEST_DISK_BUS_TYPE_IDE,
494 [BusTypeAta] = GUEST_DISK_BUS_TYPE_IDE,
495 [BusType1394] = GUEST_DISK_BUS_TYPE_IEEE1394,
496 [BusTypeSsa] = GUEST_DISK_BUS_TYPE_SSA,
497 [BusTypeFibre] = GUEST_DISK_BUS_TYPE_SSA,
498 [BusTypeUsb] = GUEST_DISK_BUS_TYPE_USB,
499 [BusTypeRAID] = GUEST_DISK_BUS_TYPE_RAID,
500 [BusTypeiScsi] = GUEST_DISK_BUS_TYPE_ISCSI,
501 [BusTypeSas] = GUEST_DISK_BUS_TYPE_SAS,
502 [BusTypeSata] = GUEST_DISK_BUS_TYPE_SATA,
503 [BusTypeSd] = GUEST_DISK_BUS_TYPE_SD,
504 [BusTypeMmc] = GUEST_DISK_BUS_TYPE_MMC,
505 [BusTypeVirtual] = GUEST_DISK_BUS_TYPE_VIRTUAL,
506 [BusTypeFileBackedVirtual] = GUEST_DISK_BUS_TYPE_FILE_BACKED_VIRTUAL,
507 /*
508 * BusTypeSpaces currently is not supported
509 */
510 [BusTypeSpaces] = GUEST_DISK_BUS_TYPE_UNKNOWN,
511 [BusTypeNvme] = GUEST_DISK_BUS_TYPE_NVME,
512 };
513
find_bus_type(STORAGE_BUS_TYPE bus)514 static GuestDiskBusType find_bus_type(STORAGE_BUS_TYPE bus)
515 {
516 if (bus >= ARRAY_SIZE(win2qemu) || (int)bus < 0) {
517 return GUEST_DISK_BUS_TYPE_UNKNOWN;
518 }
519 return win2qemu[(int)bus];
520 }
521
get_pci_address_for_device(GuestPCIAddress * pci,HDEVINFO dev_info)522 static void get_pci_address_for_device(GuestPCIAddress *pci,
523 HDEVINFO dev_info)
524 {
525 SP_DEVINFO_DATA dev_info_data;
526 DWORD j;
527 DWORD size;
528 bool partial_pci = false;
529
530 dev_info_data.cbSize = sizeof(SP_DEVINFO_DATA);
531
532 for (j = 0;
533 SetupDiEnumDeviceInfo(dev_info, j, &dev_info_data);
534 j++) {
535 DWORD addr, bus, ui_slot, type;
536 int func, slot;
537 size = sizeof(DWORD);
538
539 /*
540 * There is no need to allocate buffer in the next functions. The
541 * size is known and ULONG according to
542 * https://msdn.microsoft.com/en-us/library/windows/hardware/ff543095(v=vs.85).aspx
543 */
544 if (!SetupDiGetDeviceRegistryProperty(
545 dev_info, &dev_info_data, SPDRP_BUSNUMBER,
546 &type, (PBYTE)&bus, size, NULL)) {
547 debug_error("failed to get PCI bus");
548 bus = -1;
549 partial_pci = true;
550 }
551
552 /*
553 * The function retrieves the device's address. This value will be
554 * transformed into device function and number
555 */
556 if (!SetupDiGetDeviceRegistryProperty(
557 dev_info, &dev_info_data, SPDRP_ADDRESS,
558 &type, (PBYTE)&addr, size, NULL)) {
559 debug_error("failed to get PCI address");
560 addr = -1;
561 partial_pci = true;
562 }
563
564 /*
565 * This call returns UINumber of DEVICE_CAPABILITIES structure.
566 * This number is typically a user-perceived slot number.
567 */
568 if (!SetupDiGetDeviceRegistryProperty(
569 dev_info, &dev_info_data, SPDRP_UI_NUMBER,
570 &type, (PBYTE)&ui_slot, size, NULL)) {
571 debug_error("failed to get PCI slot");
572 ui_slot = -1;
573 partial_pci = true;
574 }
575
576 /*
577 * SetupApi gives us the same information as driver with
578 * IoGetDeviceProperty. According to Microsoft:
579 *
580 * FunctionNumber = (USHORT)((propertyAddress) & 0x0000FFFF)
581 * DeviceNumber = (USHORT)(((propertyAddress) >> 16) & 0x0000FFFF)
582 * SPDRP_ADDRESS is propertyAddress, so we do the same.
583 *
584 * https://docs.microsoft.com/en-us/windows/desktop/api/setupapi/nf-setupapi-setupdigetdeviceregistrypropertya
585 */
586 if (partial_pci) {
587 pci->domain = -1;
588 pci->slot = -1;
589 pci->function = -1;
590 pci->bus = -1;
591 continue;
592 } else {
593 func = ((int)addr == -1) ? -1 : addr & 0x0000FFFF;
594 slot = ((int)addr == -1) ? -1 : (addr >> 16) & 0x0000FFFF;
595 if ((int)ui_slot != slot) {
596 g_debug("mismatch with reported slot values: %d vs %d",
597 (int)ui_slot, slot);
598 }
599 pci->domain = 0;
600 pci->slot = (int)ui_slot;
601 pci->function = func;
602 pci->bus = (int)bus;
603 return;
604 }
605 }
606 }
607
get_empty_pci_address(void)608 static GuestPCIAddress *get_empty_pci_address(void)
609 {
610 GuestPCIAddress *pci = NULL;
611
612 pci = g_malloc0(sizeof(*pci));
613 pci->domain = -1;
614 pci->slot = -1;
615 pci->function = -1;
616 pci->bus = -1;
617 return pci;
618 }
619
get_pci_info(int number,Error ** errp)620 static GuestPCIAddress *get_pci_info(int number, Error **errp)
621 {
622 HDEVINFO dev_info = INVALID_HANDLE_VALUE;
623 HDEVINFO parent_dev_info = INVALID_HANDLE_VALUE;
624
625 SP_DEVINFO_DATA dev_info_data;
626 SP_DEVICE_INTERFACE_DATA dev_iface_data;
627 HANDLE dev_file;
628 int i;
629 GuestPCIAddress *pci = get_empty_pci_address();
630
631 dev_info = SetupDiGetClassDevs(&GUID_DEVINTERFACE_DISK, 0, 0,
632 DIGCF_PRESENT | DIGCF_DEVICEINTERFACE);
633 if (dev_info == INVALID_HANDLE_VALUE) {
634 error_setg_win32(errp, GetLastError(), "failed to get devices tree");
635 goto end;
636 }
637
638 g_debug("enumerating devices");
639 dev_info_data.cbSize = sizeof(SP_DEVINFO_DATA);
640 dev_iface_data.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA);
641 for (i = 0; SetupDiEnumDeviceInfo(dev_info, i, &dev_info_data); i++) {
642 g_autofree PSP_DEVICE_INTERFACE_DETAIL_DATA pdev_iface_detail_data = NULL;
643 STORAGE_DEVICE_NUMBER sdn;
644 g_autofree char *parent_dev_id = NULL;
645 SP_DEVINFO_DATA parent_dev_info_data;
646 DWORD size = 0;
647
648 g_debug("getting device path");
649 if (SetupDiEnumDeviceInterfaces(dev_info, &dev_info_data,
650 &GUID_DEVINTERFACE_DISK, 0,
651 &dev_iface_data)) {
652 if (!SetupDiGetDeviceInterfaceDetail(dev_info, &dev_iface_data,
653 pdev_iface_detail_data,
654 size, &size,
655 &dev_info_data)) {
656 if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) {
657 pdev_iface_detail_data = g_malloc(size);
658 pdev_iface_detail_data->cbSize =
659 sizeof(*pdev_iface_detail_data);
660 } else {
661 error_setg_win32(errp, GetLastError(),
662 "failed to get device interfaces");
663 goto end;
664 }
665 }
666
667 if (!SetupDiGetDeviceInterfaceDetail(dev_info, &dev_iface_data,
668 pdev_iface_detail_data,
669 size, &size,
670 &dev_info_data)) {
671 // pdev_iface_detail_data already is allocated
672 error_setg_win32(errp, GetLastError(),
673 "failed to get device interfaces");
674 goto end;
675 }
676
677 dev_file = CreateFile(pdev_iface_detail_data->DevicePath, 0,
678 FILE_SHARE_READ, NULL, OPEN_EXISTING, 0,
679 NULL);
680
681 if (!DeviceIoControl(dev_file, IOCTL_STORAGE_GET_DEVICE_NUMBER,
682 NULL, 0, &sdn, sizeof(sdn), &size, NULL)) {
683 CloseHandle(dev_file);
684 error_setg_win32(errp, GetLastError(),
685 "failed to get device slot number");
686 goto end;
687 }
688
689 CloseHandle(dev_file);
690 if (sdn.DeviceNumber != number) {
691 continue;
692 }
693 } else {
694 error_setg_win32(errp, GetLastError(),
695 "failed to get device interfaces");
696 goto end;
697 }
698
699 g_debug("found device slot %d. Getting storage controller", number);
700 {
701 CONFIGRET cr;
702 DEVINST dev_inst, parent_dev_inst;
703 ULONG dev_id_size = 0;
704
705 size = 0;
706 if (!SetupDiGetDeviceInstanceId(dev_info, &dev_info_data,
707 parent_dev_id, size, &size)) {
708 if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) {
709 parent_dev_id = g_malloc(size);
710 } else {
711 error_setg_win32(errp, GetLastError(),
712 "failed to get device instance ID");
713 goto end;
714 }
715 }
716
717 if (!SetupDiGetDeviceInstanceId(dev_info, &dev_info_data,
718 parent_dev_id, size, &size)) {
719 // parent_dev_id already is allocated
720 error_setg_win32(errp, GetLastError(),
721 "failed to get device instance ID");
722 goto end;
723 }
724
725 /*
726 * CM API used here as opposed to
727 * SetupDiGetDeviceProperty(..., DEVPKEY_Device_Parent, ...)
728 * which exports are only available in mingw-w64 6+
729 */
730 cr = CM_Locate_DevInst(&dev_inst, parent_dev_id, 0);
731 if (cr != CR_SUCCESS) {
732 g_error("CM_Locate_DevInst failed with code %lx", cr);
733 error_setg_win32(errp, GetLastError(),
734 "failed to get device instance");
735 goto end;
736 }
737 cr = CM_Get_Parent(&parent_dev_inst, dev_inst, 0);
738 if (cr != CR_SUCCESS) {
739 g_error("CM_Get_Parent failed with code %lx", cr);
740 error_setg_win32(errp, GetLastError(),
741 "failed to get parent device instance");
742 goto end;
743 }
744
745 cr = CM_Get_Device_ID_Size(&dev_id_size, parent_dev_inst, 0);
746 if (cr != CR_SUCCESS) {
747 g_error("CM_Get_Device_ID_Size failed with code %lx", cr);
748 error_setg_win32(errp, GetLastError(),
749 "failed to get parent device ID length");
750 goto end;
751 }
752
753 ++dev_id_size;
754 if (dev_id_size > size) {
755 g_free(parent_dev_id);
756 parent_dev_id = g_malloc(dev_id_size);
757 }
758
759 cr = CM_Get_Device_ID(parent_dev_inst, parent_dev_id, dev_id_size,
760 0);
761 if (cr != CR_SUCCESS) {
762 g_error("CM_Get_Device_ID failed with code %lx", cr);
763 error_setg_win32(errp, GetLastError(),
764 "failed to get parent device ID");
765 goto end;
766 }
767 }
768
769 g_debug("querying storage controller %s for PCI information",
770 parent_dev_id);
771 parent_dev_info =
772 SetupDiGetClassDevs(&GUID_DEVINTERFACE_STORAGEPORT, parent_dev_id,
773 NULL, DIGCF_PRESENT | DIGCF_DEVICEINTERFACE);
774
775 if (parent_dev_info == INVALID_HANDLE_VALUE) {
776 error_setg_win32(errp, GetLastError(),
777 "failed to get parent device");
778 goto end;
779 }
780
781 parent_dev_info_data.cbSize = sizeof(SP_DEVINFO_DATA);
782 if (!SetupDiEnumDeviceInfo(parent_dev_info, 0, &parent_dev_info_data)) {
783 error_setg_win32(errp, GetLastError(),
784 "failed to get parent device data");
785 goto end;
786 }
787
788 get_pci_address_for_device(pci, parent_dev_info);
789
790 break;
791 }
792
793 end:
794 if (parent_dev_info != INVALID_HANDLE_VALUE) {
795 SetupDiDestroyDeviceInfoList(parent_dev_info);
796 }
797 if (dev_info != INVALID_HANDLE_VALUE) {
798 SetupDiDestroyDeviceInfoList(dev_info);
799 }
800 return pci;
801 }
802
get_disk_properties(HANDLE vol_h,GuestDiskAddress * disk,Error ** errp)803 static void get_disk_properties(HANDLE vol_h, GuestDiskAddress *disk,
804 Error **errp)
805 {
806 STORAGE_PROPERTY_QUERY query;
807 STORAGE_DEVICE_DESCRIPTOR *dev_desc, buf;
808 DWORD received;
809 ULONG size = sizeof(buf);
810
811 dev_desc = &buf;
812 query.PropertyId = StorageDeviceProperty;
813 query.QueryType = PropertyStandardQuery;
814
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 bus type");
819 return;
820 }
821 disk->bus_type = find_bus_type(dev_desc->BusType);
822 g_debug("bus type %d", disk->bus_type);
823
824 /* Query once more. Now with long enough buffer. */
825 size = dev_desc->Size;
826 dev_desc = g_malloc0(size);
827 if (!DeviceIoControl(vol_h, IOCTL_STORAGE_QUERY_PROPERTY, &query,
828 sizeof(STORAGE_PROPERTY_QUERY), dev_desc,
829 size, &received, NULL)) {
830 error_setg_win32(errp, GetLastError(), "failed to get serial number");
831 g_debug("failed to get serial number");
832 goto out_free;
833 }
834 if (dev_desc->SerialNumberOffset > 0) {
835 const char *serial;
836 size_t len;
837
838 if (dev_desc->SerialNumberOffset >= received) {
839 error_setg(errp, "failed to get serial number: offset outside the buffer");
840 g_debug("serial number offset outside the buffer");
841 goto out_free;
842 }
843 serial = (char *)dev_desc + dev_desc->SerialNumberOffset;
844 len = received - dev_desc->SerialNumberOffset;
845 g_debug("serial number \"%s\"", serial);
846 if (*serial != 0) {
847 disk->serial = g_strndup(serial, len);
848 }
849 }
850 out_free:
851 g_free(dev_desc);
852 }
853
get_single_disk_info(int disk_number,GuestDiskAddress * disk,Error ** errp)854 static void get_single_disk_info(int disk_number,
855 GuestDiskAddress *disk, Error **errp)
856 {
857 SCSI_ADDRESS addr, *scsi_ad;
858 DWORD len;
859 HANDLE disk_h;
860 Error *local_err = NULL;
861
862 scsi_ad = &addr;
863
864 g_debug("getting disk info for: %s", disk->dev);
865 disk_h = CreateFile(disk->dev, 0, FILE_SHARE_READ, NULL, OPEN_EXISTING,
866 0, NULL);
867 if (disk_h == INVALID_HANDLE_VALUE) {
868 error_setg_win32(errp, GetLastError(), "failed to open disk");
869 return;
870 }
871
872 get_disk_properties(disk_h, disk, &local_err);
873 if (local_err) {
874 error_propagate(errp, local_err);
875 goto err_close;
876 }
877
878 g_debug("bus type %d", disk->bus_type);
879 /* always set pci_controller as required by schema. get_pci_info() should
880 * report -1 values for non-PCI buses rather than fail. fail the command
881 * if that doesn't hold since that suggests some other unexpected
882 * breakage
883 */
884 if (disk->bus_type == GUEST_DISK_BUS_TYPE_USB) {
885 disk->pci_controller = get_empty_pci_address();
886 } else {
887 disk->pci_controller = get_pci_info(disk_number, &local_err);
888 if (local_err) {
889 error_propagate(errp, local_err);
890 goto err_close;
891 }
892 }
893 if (disk->bus_type == GUEST_DISK_BUS_TYPE_SCSI
894 || disk->bus_type == GUEST_DISK_BUS_TYPE_IDE
895 || disk->bus_type == GUEST_DISK_BUS_TYPE_RAID
896 /* This bus type is not supported before Windows Server 2003 SP1 */
897 || disk->bus_type == GUEST_DISK_BUS_TYPE_SAS
898 ) {
899 /* We are able to use the same ioctls for different bus types
900 * according to Microsoft docs
901 * https://technet.microsoft.com/en-us/library/ee851589(v=ws.10).aspx */
902 g_debug("getting SCSI info");
903 if (DeviceIoControl(disk_h, IOCTL_SCSI_GET_ADDRESS, NULL, 0, scsi_ad,
904 sizeof(SCSI_ADDRESS), &len, NULL)) {
905 disk->unit = addr.Lun;
906 disk->target = addr.TargetId;
907 disk->bus = addr.PathId;
908 }
909 /* We do not set error in this case, because we still have enough
910 * information about volume. */
911 }
912
913 err_close:
914 CloseHandle(disk_h);
915 }
916
917 /* VSS provider works with volumes, thus there is no difference if
918 * the volume consist of spanned disks. Info about the first disk in the
919 * volume is returned for the spanned disk group (LVM) */
build_guest_disk_info(char * guid,Error ** errp)920 static GuestDiskAddressList *build_guest_disk_info(char *guid, Error **errp)
921 {
922 Error *local_err = NULL;
923 GuestDiskAddressList *list = NULL;
924 GuestDiskAddress *disk = NULL;
925 int i;
926 HANDLE vol_h;
927 DWORD size;
928 PVOLUME_DISK_EXTENTS extents = NULL;
929
930 /* strip final backslash */
931 char *name = g_strdup(guid);
932 if (g_str_has_suffix(name, "\\")) {
933 name[strlen(name) - 1] = 0;
934 }
935
936 g_debug("opening %s", name);
937 vol_h = CreateFile(name, 0, FILE_SHARE_READ, NULL, OPEN_EXISTING,
938 0, NULL);
939 if (vol_h == INVALID_HANDLE_VALUE) {
940 error_setg_win32(errp, GetLastError(), "failed to open volume");
941 goto out;
942 }
943
944 /* Get list of extents */
945 g_debug("getting disk extents");
946 size = sizeof(VOLUME_DISK_EXTENTS);
947 extents = g_malloc0(size);
948 if (!DeviceIoControl(vol_h, IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS, NULL,
949 0, extents, size, &size, NULL)) {
950 DWORD last_err = GetLastError();
951 if (last_err == ERROR_MORE_DATA) {
952 /* Try once more with big enough buffer */
953 size = sizeof(VOLUME_DISK_EXTENTS) +
954 (sizeof(DISK_EXTENT) * (extents->NumberOfDiskExtents - 1));
955 g_free(extents);
956 extents = g_malloc0(size);
957 if (!DeviceIoControl(
958 vol_h, IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS, NULL,
959 0, extents, size, NULL, NULL)) {
960 error_setg_win32(errp, GetLastError(),
961 "failed to get disk extents");
962 goto out;
963 }
964 } else if (last_err == ERROR_INVALID_FUNCTION) {
965 /* Possibly CD-ROM or a shared drive. Try to pass the volume */
966 g_debug("volume not on disk");
967 disk = g_new0(GuestDiskAddress, 1);
968 disk->dev = g_strdup(name);
969 get_single_disk_info(0xffffffff, disk, &local_err);
970 if (local_err) {
971 g_debug("failed to get disk info, ignoring error: %s",
972 error_get_pretty(local_err));
973 error_free(local_err);
974 goto out;
975 }
976 QAPI_LIST_PREPEND(list, disk);
977 disk = NULL;
978 goto out;
979 } else {
980 error_setg_win32(errp, GetLastError(),
981 "failed to get disk extents");
982 goto out;
983 }
984 }
985 g_debug("Number of extents: %lu", extents->NumberOfDiskExtents);
986
987 /* Go through each extent */
988 for (i = 0; i < extents->NumberOfDiskExtents; i++) {
989 disk = g_new0(GuestDiskAddress, 1);
990
991 /* Disk numbers directly correspond to numbers used in UNCs
992 *
993 * See documentation for DISK_EXTENT:
994 * https://docs.microsoft.com/en-us/windows/desktop/api/winioctl/ns-winioctl-_disk_extent
995 *
996 * See also Naming Files, Paths and Namespaces:
997 * https://docs.microsoft.com/en-us/windows/desktop/FileIO/naming-a-file#win32-device-namespaces
998 */
999 disk->dev = g_strdup_printf("\\\\.\\PhysicalDrive%lu",
1000 extents->Extents[i].DiskNumber);
1001
1002 get_single_disk_info(extents->Extents[i].DiskNumber, disk, &local_err);
1003 if (local_err) {
1004 error_propagate(errp, local_err);
1005 goto out;
1006 }
1007 QAPI_LIST_PREPEND(list, disk);
1008 disk = NULL;
1009 }
1010
1011
1012 out:
1013 if (vol_h != INVALID_HANDLE_VALUE) {
1014 CloseHandle(vol_h);
1015 }
1016 qapi_free_GuestDiskAddress(disk);
1017 g_free(extents);
1018 g_free(name);
1019
1020 return list;
1021 }
1022
qmp_guest_get_disks(Error ** errp)1023 GuestDiskInfoList *qmp_guest_get_disks(Error **errp)
1024 {
1025 GuestDiskInfoList *ret = NULL;
1026 HDEVINFO dev_info;
1027 SP_DEVICE_INTERFACE_DATA dev_iface_data;
1028 int i;
1029
1030 dev_info = SetupDiGetClassDevs(&GUID_DEVINTERFACE_DISK, 0, 0,
1031 DIGCF_PRESENT | DIGCF_DEVICEINTERFACE);
1032 if (dev_info == INVALID_HANDLE_VALUE) {
1033 error_setg_win32(errp, GetLastError(), "failed to get device tree");
1034 return NULL;
1035 }
1036
1037 g_debug("enumerating devices");
1038 dev_iface_data.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA);
1039 for (i = 0;
1040 SetupDiEnumDeviceInterfaces(dev_info, NULL, &GUID_DEVINTERFACE_DISK,
1041 i, &dev_iface_data);
1042 i++) {
1043 GuestDiskAddress *address = NULL;
1044 GuestDiskInfo *disk = NULL;
1045 Error *local_err = NULL;
1046 g_autofree PSP_DEVICE_INTERFACE_DETAIL_DATA
1047 pdev_iface_detail_data = NULL;
1048 STORAGE_DEVICE_NUMBER sdn;
1049 HANDLE dev_file;
1050 DWORD size = 0;
1051 BOOL result;
1052 int attempt;
1053
1054 g_debug(" getting device path");
1055 for (attempt = 0, result = FALSE; attempt < 2 && !result; attempt++) {
1056 result = SetupDiGetDeviceInterfaceDetail(dev_info,
1057 &dev_iface_data, pdev_iface_detail_data, size, &size, NULL);
1058 if (result) {
1059 break;
1060 }
1061 if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) {
1062 pdev_iface_detail_data = g_realloc(pdev_iface_detail_data,
1063 size);
1064 pdev_iface_detail_data->cbSize =
1065 sizeof(*pdev_iface_detail_data);
1066 } else {
1067 g_debug("failed to get device interface details");
1068 break;
1069 }
1070 }
1071 if (!result) {
1072 g_debug("skipping device");
1073 continue;
1074 }
1075
1076 g_debug(" device: %s", pdev_iface_detail_data->DevicePath);
1077 dev_file = CreateFile(pdev_iface_detail_data->DevicePath, 0,
1078 FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, NULL);
1079 if (!DeviceIoControl(dev_file, IOCTL_STORAGE_GET_DEVICE_NUMBER,
1080 NULL, 0, &sdn, sizeof(sdn), &size, NULL)) {
1081 CloseHandle(dev_file);
1082 debug_error("failed to get storage device number");
1083 continue;
1084 }
1085 CloseHandle(dev_file);
1086
1087 disk = g_new0(GuestDiskInfo, 1);
1088 disk->name = g_strdup_printf("\\\\.\\PhysicalDrive%lu",
1089 sdn.DeviceNumber);
1090
1091 g_debug(" number: %lu", sdn.DeviceNumber);
1092 address = g_new0(GuestDiskAddress, 1);
1093 address->dev = g_strdup(disk->name);
1094 get_single_disk_info(sdn.DeviceNumber, address, &local_err);
1095 if (local_err) {
1096 g_debug("failed to get disk info: %s",
1097 error_get_pretty(local_err));
1098 error_free(local_err);
1099 qapi_free_GuestDiskAddress(address);
1100 address = NULL;
1101 } else {
1102 disk->address = address;
1103 }
1104
1105 QAPI_LIST_PREPEND(ret, disk);
1106 }
1107
1108 SetupDiDestroyDeviceInfoList(dev_info);
1109 return ret;
1110 }
1111
build_guest_fsinfo(char * guid,Error ** errp)1112 static GuestFilesystemInfo *build_guest_fsinfo(char *guid, Error **errp)
1113 {
1114 DWORD info_size;
1115 char mnt, *mnt_point;
1116 wchar_t wfs_name[32];
1117 char fs_name[32];
1118 wchar_t vol_info[MAX_PATH + 1];
1119 size_t len;
1120 uint64_t i64FreeBytesToCaller, i64TotalBytes, i64FreeBytes;
1121 GuestFilesystemInfo *fs = NULL;
1122 HANDLE hLocalDiskHandle = INVALID_HANDLE_VALUE;
1123
1124 GetVolumePathNamesForVolumeName(guid, (LPCH)&mnt, 0, &info_size);
1125 if (GetLastError() != ERROR_MORE_DATA) {
1126 error_setg_win32(errp, GetLastError(), "failed to get volume name");
1127 return NULL;
1128 }
1129
1130 mnt_point = g_malloc(info_size + 1);
1131 if (!GetVolumePathNamesForVolumeName(guid, mnt_point, info_size,
1132 &info_size)) {
1133 error_setg_win32(errp, GetLastError(), "failed to get volume name");
1134 goto free;
1135 }
1136
1137 hLocalDiskHandle = CreateFile(guid, 0 , 0, NULL, OPEN_EXISTING,
1138 FILE_ATTRIBUTE_NORMAL |
1139 FILE_FLAG_BACKUP_SEMANTICS, NULL);
1140 if (INVALID_HANDLE_VALUE == hLocalDiskHandle) {
1141 error_setg_win32(errp, GetLastError(), "failed to get handle for volume");
1142 goto free;
1143 }
1144
1145 len = strlen(mnt_point);
1146 mnt_point[len] = '\\';
1147 mnt_point[len + 1] = 0;
1148
1149 if (!GetVolumeInformationByHandleW(hLocalDiskHandle, vol_info,
1150 sizeof(vol_info), NULL, NULL, NULL,
1151 (LPWSTR) & wfs_name, sizeof(wfs_name))) {
1152 if (GetLastError() != ERROR_NOT_READY) {
1153 error_setg_win32(errp, GetLastError(), "failed to get volume info");
1154 }
1155 goto free;
1156 }
1157
1158 fs = g_malloc(sizeof(*fs));
1159 fs->name = g_strdup(guid);
1160 fs->has_total_bytes = false;
1161 fs->has_total_bytes_privileged = false;
1162 fs->has_used_bytes = false;
1163 if (len == 0) {
1164 fs->mountpoint = g_strdup("System Reserved");
1165 } else {
1166 fs->mountpoint = g_strndup(mnt_point, len);
1167 if (GetDiskFreeSpaceEx(fs->mountpoint,
1168 (PULARGE_INTEGER) & i64FreeBytesToCaller,
1169 (PULARGE_INTEGER) & i64TotalBytes,
1170 (PULARGE_INTEGER) & i64FreeBytes)) {
1171 fs->used_bytes = i64TotalBytes - i64FreeBytes;
1172 fs->total_bytes = i64TotalBytes;
1173 fs->has_total_bytes = true;
1174 fs->has_used_bytes = true;
1175 }
1176 }
1177 wcstombs(fs_name, wfs_name, sizeof(wfs_name));
1178 fs->type = g_strdup(fs_name);
1179 fs->disk = build_guest_disk_info(guid, errp);
1180 free:
1181 if (hLocalDiskHandle != INVALID_HANDLE_VALUE) {
1182 CloseHandle(hLocalDiskHandle);
1183 }
1184 g_free(mnt_point);
1185 return fs;
1186 }
1187
qmp_guest_get_fsinfo(Error ** errp)1188 GuestFilesystemInfoList *qmp_guest_get_fsinfo(Error **errp)
1189 {
1190 HANDLE vol_h;
1191 GuestFilesystemInfoList *ret = NULL;
1192 char guid[256];
1193
1194 vol_h = FindFirstVolume(guid, sizeof(guid));
1195 if (vol_h == INVALID_HANDLE_VALUE) {
1196 error_setg_win32(errp, GetLastError(), "failed to find any volume");
1197 return NULL;
1198 }
1199
1200 do {
1201 Error *local_err = NULL;
1202 GuestFilesystemInfo *info = build_guest_fsinfo(guid, &local_err);
1203 if (local_err) {
1204 g_debug("failed to get filesystem info, ignoring error: %s",
1205 error_get_pretty(local_err));
1206 error_free(local_err);
1207 continue;
1208 }
1209 QAPI_LIST_PREPEND(ret, info);
1210 } while (FindNextVolume(vol_h, guid, sizeof(guid)));
1211
1212 if (GetLastError() != ERROR_NO_MORE_FILES) {
1213 error_setg_win32(errp, GetLastError(), "failed to find next volume");
1214 }
1215
1216 FindVolumeClose(vol_h);
1217 return ret;
1218 }
1219
1220 /*
1221 * Return status of freeze/thaw
1222 */
qmp_guest_fsfreeze_status(Error ** errp)1223 GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **errp)
1224 {
1225 if (!vss_initialized()) {
1226 error_setg(errp, "fsfreeze not possible as VSS failed to initialize");
1227 return 0;
1228 }
1229
1230 if (ga_is_frozen(ga_state)) {
1231 return GUEST_FSFREEZE_STATUS_FROZEN;
1232 }
1233
1234 return GUEST_FSFREEZE_STATUS_THAWED;
1235 }
1236
1237 /*
1238 * Freeze local file systems using Volume Shadow-copy Service.
1239 * The frozen state is limited for up to 10 seconds by VSS.
1240 */
qmp_guest_fsfreeze_freeze(Error ** errp)1241 int64_t qmp_guest_fsfreeze_freeze(Error **errp)
1242 {
1243 return qmp_guest_fsfreeze_freeze_list(false, NULL, errp);
1244 }
1245
qmp_guest_fsfreeze_freeze_list(bool has_mountpoints,strList * mountpoints,Error ** errp)1246 int64_t qmp_guest_fsfreeze_freeze_list(bool has_mountpoints,
1247 strList *mountpoints,
1248 Error **errp)
1249 {
1250 int i;
1251 Error *local_err = NULL;
1252
1253 if (!vss_initialized()) {
1254 error_setg(errp, "fsfreeze not possible as VSS failed to initialize");
1255 return 0;
1256 }
1257
1258 slog("guest-fsfreeze called");
1259
1260 /* cannot risk guest agent blocking itself on a write in this state */
1261 ga_set_frozen(ga_state);
1262
1263 qga_vss_fsfreeze(&i, true, mountpoints, &local_err);
1264 if (local_err) {
1265 error_propagate(errp, local_err);
1266 goto error;
1267 }
1268
1269 return i;
1270
1271 error:
1272 local_err = NULL;
1273 qmp_guest_fsfreeze_thaw(&local_err);
1274 if (local_err) {
1275 g_debug("cleanup thaw: %s", error_get_pretty(local_err));
1276 error_free(local_err);
1277 }
1278 return 0;
1279 }
1280
1281 /*
1282 * Thaw local file systems using Volume Shadow-copy Service.
1283 */
qmp_guest_fsfreeze_thaw(Error ** errp)1284 int64_t qmp_guest_fsfreeze_thaw(Error **errp)
1285 {
1286 int i;
1287
1288 if (!vss_initialized()) {
1289 error_setg(errp, "fsfreeze not possible as VSS failed to initialize");
1290 return 0;
1291 }
1292
1293 qga_vss_fsfreeze(&i, false, NULL, errp);
1294
1295 ga_unset_frozen(ga_state);
1296
1297 slog("guest-fsthaw called");
1298
1299 return i;
1300 }
1301
guest_fsfreeze_cleanup(void)1302 static void guest_fsfreeze_cleanup(void)
1303 {
1304 Error *err = NULL;
1305
1306 if (!vss_initialized()) {
1307 return;
1308 }
1309
1310 if (ga_is_frozen(ga_state) == GUEST_FSFREEZE_STATUS_FROZEN) {
1311 qmp_guest_fsfreeze_thaw(&err);
1312 if (err) {
1313 slog("failed to clean up frozen filesystems: %s",
1314 error_get_pretty(err));
1315 error_free(err);
1316 }
1317 }
1318
1319 vss_deinit(true);
1320 }
1321
1322 /*
1323 * Walk list of mounted file systems in the guest, and discard unused
1324 * areas.
1325 */
1326 GuestFilesystemTrimResponse *
qmp_guest_fstrim(bool has_minimum,int64_t minimum,Error ** errp)1327 qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp)
1328 {
1329 GuestFilesystemTrimResponse *resp;
1330 HANDLE handle;
1331 WCHAR guid[MAX_PATH] = L"";
1332 OSVERSIONINFO osvi;
1333 BOOL win8_or_later;
1334
1335 ZeroMemory(&osvi, sizeof(OSVERSIONINFO));
1336 osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
1337 GetVersionEx(&osvi);
1338 win8_or_later = (osvi.dwMajorVersion > 6 ||
1339 ((osvi.dwMajorVersion == 6) &&
1340 (osvi.dwMinorVersion >= 2)));
1341 if (!win8_or_later) {
1342 error_setg(errp, "fstrim is only supported for Win8+");
1343 return NULL;
1344 }
1345
1346 handle = FindFirstVolumeW(guid, ARRAYSIZE(guid));
1347 if (handle == INVALID_HANDLE_VALUE) {
1348 error_setg_win32(errp, GetLastError(), "failed to find any volume");
1349 return NULL;
1350 }
1351
1352 resp = g_new0(GuestFilesystemTrimResponse, 1);
1353
1354 do {
1355 GuestFilesystemTrimResult *res;
1356 PWCHAR uc_path;
1357 DWORD char_count = 0;
1358 char *path, *out;
1359 GError *gerr = NULL;
1360 gchar *argv[4];
1361
1362 GetVolumePathNamesForVolumeNameW(guid, NULL, 0, &char_count);
1363
1364 if (GetLastError() != ERROR_MORE_DATA) {
1365 continue;
1366 }
1367 if (GetDriveTypeW(guid) != DRIVE_FIXED) {
1368 continue;
1369 }
1370
1371 uc_path = g_new(WCHAR, char_count);
1372 if (!GetVolumePathNamesForVolumeNameW(guid, uc_path, char_count,
1373 &char_count) || !*uc_path) {
1374 /* strange, but this condition could be faced even with size == 2 */
1375 g_free(uc_path);
1376 continue;
1377 }
1378
1379 res = g_new0(GuestFilesystemTrimResult, 1);
1380
1381 path = g_utf16_to_utf8(uc_path, char_count, NULL, NULL, &gerr);
1382
1383 g_free(uc_path);
1384
1385 if (!path) {
1386 res->error = g_strdup(gerr->message);
1387 g_error_free(gerr);
1388 break;
1389 }
1390
1391 res->path = path;
1392
1393 QAPI_LIST_PREPEND(resp->paths, res);
1394
1395 memset(argv, 0, sizeof(argv));
1396 argv[0] = (gchar *)"defrag.exe";
1397 argv[1] = (gchar *)"/L";
1398 argv[2] = path;
1399
1400 if (!g_spawn_sync(NULL, argv, NULL, G_SPAWN_SEARCH_PATH, NULL, NULL,
1401 &out /* stdout */, NULL /* stdin */,
1402 NULL, &gerr)) {
1403 res->error = g_strdup(gerr->message);
1404 g_error_free(gerr);
1405 } else {
1406 /* defrag.exe is UGLY. Exit code is ALWAYS zero.
1407 Error is reported in the output with something like
1408 (x89000020) etc code in the stdout */
1409
1410 int i;
1411 gchar **lines = g_strsplit(out, "\r\n", 0);
1412 g_free(out);
1413
1414 for (i = 0; lines[i] != NULL; i++) {
1415 if (g_strstr_len(lines[i], -1, "(0x") == NULL) {
1416 continue;
1417 }
1418 res->error = g_strdup(lines[i]);
1419 break;
1420 }
1421 g_strfreev(lines);
1422 }
1423 } while (FindNextVolumeW(handle, guid, ARRAYSIZE(guid)));
1424
1425 FindVolumeClose(handle);
1426 return resp;
1427 }
1428
1429 typedef enum {
1430 GUEST_SUSPEND_MODE_DISK,
1431 GUEST_SUSPEND_MODE_RAM
1432 } GuestSuspendMode;
1433
check_suspend_mode(GuestSuspendMode mode,Error ** errp)1434 static void check_suspend_mode(GuestSuspendMode mode, Error **errp)
1435 {
1436 SYSTEM_POWER_CAPABILITIES sys_pwr_caps;
1437
1438 ZeroMemory(&sys_pwr_caps, sizeof(sys_pwr_caps));
1439 if (!GetPwrCapabilities(&sys_pwr_caps)) {
1440 error_setg(errp, "failed to determine guest suspend capabilities");
1441 return;
1442 }
1443
1444 switch (mode) {
1445 case GUEST_SUSPEND_MODE_DISK:
1446 if (!sys_pwr_caps.SystemS4) {
1447 error_setg(errp, "suspend-to-disk not supported by OS");
1448 }
1449 break;
1450 case GUEST_SUSPEND_MODE_RAM:
1451 if (!sys_pwr_caps.SystemS3) {
1452 error_setg(errp, "suspend-to-ram not supported by OS");
1453 }
1454 break;
1455 default:
1456 abort();
1457 }
1458 }
1459
do_suspend(LPVOID opaque)1460 static DWORD WINAPI do_suspend(LPVOID opaque)
1461 {
1462 GuestSuspendMode *mode = opaque;
1463 DWORD ret = 0;
1464
1465 if (!SetSuspendState(*mode == GUEST_SUSPEND_MODE_DISK, TRUE, TRUE)) {
1466 g_autofree gchar *emsg = g_win32_error_message(GetLastError());
1467 slog("failed to suspend guest: %s", emsg);
1468 ret = -1;
1469 }
1470 g_free(mode);
1471 return ret;
1472 }
1473
qmp_guest_suspend_disk(Error ** errp)1474 void qmp_guest_suspend_disk(Error **errp)
1475 {
1476 Error *local_err = NULL;
1477 GuestSuspendMode *mode = g_new(GuestSuspendMode, 1);
1478
1479 *mode = GUEST_SUSPEND_MODE_DISK;
1480 check_suspend_mode(*mode, &local_err);
1481 if (local_err) {
1482 goto out;
1483 }
1484 acquire_privilege(SE_SHUTDOWN_NAME, &local_err);
1485 if (local_err) {
1486 goto out;
1487 }
1488 execute_async(do_suspend, mode, &local_err);
1489
1490 out:
1491 if (local_err) {
1492 error_propagate(errp, local_err);
1493 g_free(mode);
1494 }
1495 }
1496
qmp_guest_suspend_ram(Error ** errp)1497 void qmp_guest_suspend_ram(Error **errp)
1498 {
1499 Error *local_err = NULL;
1500 GuestSuspendMode *mode = g_new(GuestSuspendMode, 1);
1501
1502 *mode = GUEST_SUSPEND_MODE_RAM;
1503 check_suspend_mode(*mode, &local_err);
1504 if (local_err) {
1505 goto out;
1506 }
1507 acquire_privilege(SE_SHUTDOWN_NAME, &local_err);
1508 if (local_err) {
1509 goto out;
1510 }
1511 execute_async(do_suspend, mode, &local_err);
1512
1513 out:
1514 if (local_err) {
1515 error_propagate(errp, local_err);
1516 g_free(mode);
1517 }
1518 }
1519
guest_get_adapters_addresses(Error ** errp)1520 static IP_ADAPTER_ADDRESSES *guest_get_adapters_addresses(Error **errp)
1521 {
1522 IP_ADAPTER_ADDRESSES *adptr_addrs = NULL;
1523 ULONG adptr_addrs_len = 0;
1524 DWORD ret;
1525
1526 /* Call the first time to get the adptr_addrs_len. */
1527 GetAdaptersAddresses(AF_UNSPEC, GAA_FLAG_INCLUDE_PREFIX,
1528 NULL, adptr_addrs, &adptr_addrs_len);
1529
1530 adptr_addrs = g_malloc(adptr_addrs_len);
1531 ret = GetAdaptersAddresses(AF_UNSPEC, GAA_FLAG_INCLUDE_PREFIX,
1532 NULL, adptr_addrs, &adptr_addrs_len);
1533 if (ret != ERROR_SUCCESS) {
1534 error_setg_win32(errp, ret, "failed to get adapters addresses");
1535 g_free(adptr_addrs);
1536 adptr_addrs = NULL;
1537 }
1538 return adptr_addrs;
1539 }
1540
guest_wctomb_dup(WCHAR * wstr)1541 static char *guest_wctomb_dup(WCHAR *wstr)
1542 {
1543 char *str;
1544 size_t str_size;
1545
1546 str_size = WideCharToMultiByte(CP_UTF8, 0, wstr, -1, NULL, 0, NULL, NULL);
1547 /* add 1 to str_size for NULL terminator */
1548 str = g_malloc(str_size + 1);
1549 WideCharToMultiByte(CP_UTF8, 0, wstr, -1, str, str_size, NULL, NULL);
1550 return str;
1551 }
1552
guest_addr_to_str(IP_ADAPTER_UNICAST_ADDRESS * ip_addr,Error ** errp)1553 static char *guest_addr_to_str(IP_ADAPTER_UNICAST_ADDRESS *ip_addr,
1554 Error **errp)
1555 {
1556 char addr_str[INET6_ADDRSTRLEN + INET_ADDRSTRLEN];
1557 DWORD len;
1558 int ret;
1559
1560 if (ip_addr->Address.lpSockaddr->sa_family == AF_INET ||
1561 ip_addr->Address.lpSockaddr->sa_family == AF_INET6) {
1562 len = sizeof(addr_str);
1563 ret = WSAAddressToString(ip_addr->Address.lpSockaddr,
1564 ip_addr->Address.iSockaddrLength,
1565 NULL,
1566 addr_str,
1567 &len);
1568 if (ret != 0) {
1569 error_setg_win32(errp, WSAGetLastError(),
1570 "failed address presentation form conversion");
1571 return NULL;
1572 }
1573 return g_strdup(addr_str);
1574 }
1575 return NULL;
1576 }
1577
guest_ip_prefix(IP_ADAPTER_UNICAST_ADDRESS * ip_addr)1578 static int64_t guest_ip_prefix(IP_ADAPTER_UNICAST_ADDRESS *ip_addr)
1579 {
1580 /* For Windows Vista/2008 and newer, use the OnLinkPrefixLength
1581 * field to obtain the prefix.
1582 */
1583 return ip_addr->OnLinkPrefixLength;
1584 }
1585
1586 #define INTERFACE_PATH_BUF_SZ 512
1587
get_interface_index(const char * guid)1588 static DWORD get_interface_index(const char *guid)
1589 {
1590 ULONG index;
1591 DWORD status;
1592 wchar_t wbuf[INTERFACE_PATH_BUF_SZ];
1593 snwprintf(wbuf, INTERFACE_PATH_BUF_SZ, L"\\device\\tcpip_%s", guid);
1594 wbuf[INTERFACE_PATH_BUF_SZ - 1] = 0;
1595 status = GetAdapterIndex (wbuf, &index);
1596 if (status != NO_ERROR) {
1597 return (DWORD)~0;
1598 } else {
1599 return index;
1600 }
1601 }
1602
1603 typedef NETIOAPI_API (WINAPI *GetIfEntry2Func)(PMIB_IF_ROW2 Row);
1604
guest_get_network_stats(const char * name,GuestNetworkInterfaceStat * stats)1605 static int guest_get_network_stats(const char *name,
1606 GuestNetworkInterfaceStat *stats)
1607 {
1608 OSVERSIONINFO os_ver;
1609
1610 os_ver.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
1611 GetVersionEx(&os_ver);
1612 if (os_ver.dwMajorVersion >= 6) {
1613 MIB_IF_ROW2 a_mid_ifrow;
1614 GetIfEntry2Func getifentry2_ex;
1615 DWORD if_index = 0;
1616 HMODULE module = GetModuleHandle("iphlpapi");
1617 PVOID func = GetProcAddress(module, "GetIfEntry2");
1618
1619 if (func == NULL) {
1620 return -1;
1621 }
1622
1623 getifentry2_ex = (GetIfEntry2Func)func;
1624 if_index = get_interface_index(name);
1625 if (if_index == (DWORD)~0) {
1626 return -1;
1627 }
1628
1629 memset(&a_mid_ifrow, 0, sizeof(a_mid_ifrow));
1630 a_mid_ifrow.InterfaceIndex = if_index;
1631 if (NO_ERROR == getifentry2_ex(&a_mid_ifrow)) {
1632 stats->rx_bytes = a_mid_ifrow.InOctets;
1633 stats->rx_packets = a_mid_ifrow.InUcastPkts;
1634 stats->rx_errs = a_mid_ifrow.InErrors;
1635 stats->rx_dropped = a_mid_ifrow.InDiscards;
1636 stats->tx_bytes = a_mid_ifrow.OutOctets;
1637 stats->tx_packets = a_mid_ifrow.OutUcastPkts;
1638 stats->tx_errs = a_mid_ifrow.OutErrors;
1639 stats->tx_dropped = a_mid_ifrow.OutDiscards;
1640 return 0;
1641 }
1642 }
1643 return -1;
1644 }
1645
qmp_guest_network_get_interfaces(Error ** errp)1646 GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp)
1647 {
1648 IP_ADAPTER_ADDRESSES *adptr_addrs, *addr;
1649 IP_ADAPTER_UNICAST_ADDRESS *ip_addr = NULL;
1650 GuestNetworkInterfaceList *head = NULL, **tail = &head;
1651 GuestIpAddressList *head_addr, **tail_addr;
1652 GuestNetworkInterface *info;
1653 GuestNetworkInterfaceStat *interface_stat = NULL;
1654 GuestIpAddress *address_item = NULL;
1655 unsigned char *mac_addr;
1656 char *addr_str;
1657 WORD wsa_version;
1658 WSADATA wsa_data;
1659 int ret;
1660
1661 adptr_addrs = guest_get_adapters_addresses(errp);
1662 if (adptr_addrs == NULL) {
1663 return NULL;
1664 }
1665
1666 /* Make WSA APIs available. */
1667 wsa_version = MAKEWORD(2, 2);
1668 ret = WSAStartup(wsa_version, &wsa_data);
1669 if (ret != 0) {
1670 error_setg_win32(errp, ret, "failed socket startup");
1671 goto out;
1672 }
1673
1674 for (addr = adptr_addrs; addr; addr = addr->Next) {
1675 info = g_malloc0(sizeof(*info));
1676
1677 QAPI_LIST_APPEND(tail, info);
1678
1679 info->name = guest_wctomb_dup(addr->FriendlyName);
1680
1681 if (addr->PhysicalAddressLength != 0) {
1682 mac_addr = addr->PhysicalAddress;
1683
1684 info->hardware_address =
1685 g_strdup_printf("%02x:%02x:%02x:%02x:%02x:%02x",
1686 (int) mac_addr[0], (int) mac_addr[1],
1687 (int) mac_addr[2], (int) mac_addr[3],
1688 (int) mac_addr[4], (int) mac_addr[5]);
1689 }
1690
1691 head_addr = NULL;
1692 tail_addr = &head_addr;
1693 for (ip_addr = addr->FirstUnicastAddress;
1694 ip_addr;
1695 ip_addr = ip_addr->Next) {
1696 addr_str = guest_addr_to_str(ip_addr, errp);
1697 if (addr_str == NULL) {
1698 continue;
1699 }
1700
1701 address_item = g_malloc0(sizeof(*address_item));
1702
1703 QAPI_LIST_APPEND(tail_addr, address_item);
1704
1705 address_item->ip_address = addr_str;
1706 address_item->prefix = guest_ip_prefix(ip_addr);
1707 if (ip_addr->Address.lpSockaddr->sa_family == AF_INET) {
1708 address_item->ip_address_type = GUEST_IP_ADDRESS_TYPE_IPV4;
1709 } else if (ip_addr->Address.lpSockaddr->sa_family == AF_INET6) {
1710 address_item->ip_address_type = GUEST_IP_ADDRESS_TYPE_IPV6;
1711 }
1712 }
1713 if (head_addr) {
1714 info->has_ip_addresses = true;
1715 info->ip_addresses = head_addr;
1716 }
1717 if (!info->statistics) {
1718 interface_stat = g_malloc0(sizeof(*interface_stat));
1719 if (guest_get_network_stats(addr->AdapterName, interface_stat)
1720 == -1) {
1721 g_free(interface_stat);
1722 } else {
1723 info->statistics = interface_stat;
1724 }
1725 }
1726 }
1727 WSACleanup();
1728 out:
1729 g_free(adptr_addrs);
1730 return head;
1731 }
1732
filetime_to_ns(const FILETIME * tf)1733 static int64_t filetime_to_ns(const FILETIME *tf)
1734 {
1735 return ((((int64_t)tf->dwHighDateTime << 32) | tf->dwLowDateTime)
1736 - W32_FT_OFFSET) * 100;
1737 }
1738
qmp_guest_set_time(bool has_time,int64_t time_ns,Error ** errp)1739 void qmp_guest_set_time(bool has_time, int64_t time_ns, Error **errp)
1740 {
1741 Error *local_err = NULL;
1742 SYSTEMTIME ts;
1743 FILETIME tf;
1744 LONGLONG time;
1745
1746 if (!has_time) {
1747 /* Unfortunately, Windows libraries don't provide an easy way to access
1748 * RTC yet:
1749 *
1750 * https://msdn.microsoft.com/en-us/library/aa908981.aspx
1751 *
1752 * Instead, a workaround is to use the Windows win32tm command to
1753 * resync the time using the Windows Time service.
1754 */
1755 LPVOID msg_buffer;
1756 DWORD ret_flags;
1757
1758 HRESULT hr = system("w32tm /resync /nowait");
1759
1760 if (GetLastError() != 0) {
1761 strerror_s((LPTSTR) & msg_buffer, 0, errno);
1762 error_setg(errp, "system(...) failed: %s", (LPCTSTR)msg_buffer);
1763 } else if (hr != 0) {
1764 if (hr == HRESULT_FROM_WIN32(ERROR_SERVICE_NOT_ACTIVE)) {
1765 error_setg(errp, "Windows Time service not running on the "
1766 "guest");
1767 } else {
1768 if (!FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER |
1769 FORMAT_MESSAGE_FROM_SYSTEM |
1770 FORMAT_MESSAGE_IGNORE_INSERTS, NULL,
1771 (DWORD)hr, MAKELANGID(LANG_NEUTRAL,
1772 SUBLANG_DEFAULT), (LPTSTR) & msg_buffer, 0,
1773 NULL)) {
1774 error_setg(errp, "w32tm failed with error (0x%lx), couldn'"
1775 "t retrieve error message", hr);
1776 } else {
1777 error_setg(errp, "w32tm failed with error (0x%lx): %s", hr,
1778 (LPCTSTR)msg_buffer);
1779 LocalFree(msg_buffer);
1780 }
1781 }
1782 } else if (!InternetGetConnectedState(&ret_flags, 0)) {
1783 error_setg(errp, "No internet connection on guest, sync not "
1784 "accurate");
1785 }
1786 return;
1787 }
1788
1789 /* Validate time passed by user. */
1790 if (time_ns < 0 || time_ns / 100 > INT64_MAX - W32_FT_OFFSET) {
1791 error_setg(errp, "Time %" PRId64 "is invalid", time_ns);
1792 return;
1793 }
1794
1795 time = time_ns / 100 + W32_FT_OFFSET;
1796
1797 tf.dwLowDateTime = (DWORD) time;
1798 tf.dwHighDateTime = (DWORD) (time >> 32);
1799
1800 if (!FileTimeToSystemTime(&tf, &ts)) {
1801 error_setg(errp, "Failed to convert system time %d",
1802 (int)GetLastError());
1803 return;
1804 }
1805
1806 acquire_privilege(SE_SYSTEMTIME_NAME, &local_err);
1807 if (local_err) {
1808 error_propagate(errp, local_err);
1809 return;
1810 }
1811
1812 if (!SetSystemTime(&ts)) {
1813 error_setg(errp, "Failed to set time to guest: %d", (int)GetLastError());
1814 return;
1815 }
1816 }
1817
qmp_guest_get_vcpus(Error ** errp)1818 GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp)
1819 {
1820 PSYSTEM_LOGICAL_PROCESSOR_INFORMATION pslpi, ptr;
1821 DWORD length;
1822 GuestLogicalProcessorList *head, **tail;
1823 Error *local_err = NULL;
1824 int64_t current;
1825
1826 ptr = pslpi = NULL;
1827 length = 0;
1828 current = 0;
1829 head = NULL;
1830 tail = &head;
1831
1832 if ((GetLogicalProcessorInformation(pslpi, &length) == FALSE) &&
1833 (GetLastError() == ERROR_INSUFFICIENT_BUFFER) &&
1834 (length > sizeof(SYSTEM_LOGICAL_PROCESSOR_INFORMATION))) {
1835 ptr = pslpi = g_malloc0(length);
1836 if (GetLogicalProcessorInformation(pslpi, &length) == FALSE) {
1837 error_setg(&local_err, "Failed to get processor information: %d",
1838 (int)GetLastError());
1839 }
1840 } else {
1841 error_setg(&local_err,
1842 "Failed to get processor information buffer length: %d",
1843 (int)GetLastError());
1844 }
1845
1846 while ((local_err == NULL) && (length > 0)) {
1847 if (pslpi->Relationship == RelationProcessorCore) {
1848 ULONG_PTR cpu_bits = pslpi->ProcessorMask;
1849
1850 while (cpu_bits > 0) {
1851 if (!!(cpu_bits & 1)) {
1852 GuestLogicalProcessor *vcpu;
1853
1854 vcpu = g_malloc0(sizeof *vcpu);
1855 vcpu->logical_id = current++;
1856 vcpu->online = true;
1857 vcpu->has_can_offline = true;
1858
1859 QAPI_LIST_APPEND(tail, vcpu);
1860 }
1861 cpu_bits >>= 1;
1862 }
1863 }
1864 length -= sizeof(SYSTEM_LOGICAL_PROCESSOR_INFORMATION);
1865 pslpi++; /* next entry */
1866 }
1867
1868 g_free(ptr);
1869
1870 if (local_err == NULL) {
1871 if (head != NULL) {
1872 return head;
1873 }
1874 /* there's no guest with zero VCPUs */
1875 error_setg(&local_err, "Guest reported zero VCPUs");
1876 }
1877
1878 qapi_free_GuestLogicalProcessorList(head);
1879 error_propagate(errp, local_err);
1880 return NULL;
1881 }
1882
1883 static gchar *
get_net_error_message(gint error)1884 get_net_error_message(gint error)
1885 {
1886 HMODULE module = NULL;
1887 gchar *retval = NULL;
1888 wchar_t *msg = NULL;
1889 int flags;
1890 size_t nchars;
1891
1892 flags = FORMAT_MESSAGE_ALLOCATE_BUFFER |
1893 FORMAT_MESSAGE_IGNORE_INSERTS |
1894 FORMAT_MESSAGE_FROM_SYSTEM;
1895
1896 if (error >= NERR_BASE && error <= MAX_NERR) {
1897 module = LoadLibraryExW(L"netmsg.dll", NULL, LOAD_LIBRARY_AS_DATAFILE);
1898
1899 if (module != NULL) {
1900 flags |= FORMAT_MESSAGE_FROM_HMODULE;
1901 }
1902 }
1903
1904 FormatMessageW(flags, module, error, 0, (LPWSTR)&msg, 0, NULL);
1905
1906 if (msg != NULL) {
1907 nchars = wcslen(msg);
1908
1909 if (nchars >= 2 &&
1910 msg[nchars - 1] == L'\n' &&
1911 msg[nchars - 2] == L'\r') {
1912 msg[nchars - 2] = L'\0';
1913 }
1914
1915 retval = g_utf16_to_utf8(msg, -1, NULL, NULL, NULL);
1916
1917 LocalFree(msg);
1918 }
1919
1920 if (module != NULL) {
1921 FreeLibrary(module);
1922 }
1923
1924 return retval;
1925 }
1926
qmp_guest_set_user_password(const char * username,const char * password,bool crypted,Error ** errp)1927 void qmp_guest_set_user_password(const char *username,
1928 const char *password,
1929 bool crypted,
1930 Error **errp)
1931 {
1932 NET_API_STATUS nas;
1933 char *rawpasswddata = NULL;
1934 size_t rawpasswdlen;
1935 wchar_t *user = NULL, *wpass = NULL;
1936 USER_INFO_1003 pi1003 = { 0, };
1937 GError *gerr = NULL;
1938
1939 if (crypted) {
1940 error_setg(errp, "'crypted' must be off on this host");
1941 return;
1942 }
1943
1944 rawpasswddata = (char *)qbase64_decode(password, -1, &rawpasswdlen, errp);
1945 if (!rawpasswddata) {
1946 return;
1947 }
1948 rawpasswddata = g_renew(char, rawpasswddata, rawpasswdlen + 1);
1949 rawpasswddata[rawpasswdlen] = '\0';
1950
1951 user = g_utf8_to_utf16(username, -1, NULL, NULL, &gerr);
1952 if (!user) {
1953 error_setg(errp, "can't convert 'username' to UTF-16: %s",
1954 gerr->message);
1955 g_error_free(gerr);
1956 goto done;
1957 }
1958
1959 wpass = g_utf8_to_utf16(rawpasswddata, -1, NULL, NULL, &gerr);
1960 if (!wpass) {
1961 error_setg(errp, "can't convert 'password' to UTF-16: %s",
1962 gerr->message);
1963 g_error_free(gerr);
1964 goto done;
1965 }
1966
1967 pi1003.usri1003_password = wpass;
1968 nas = NetUserSetInfo(NULL, user,
1969 1003, (LPBYTE)&pi1003,
1970 NULL);
1971
1972 if (nas != NERR_Success) {
1973 gchar *msg = get_net_error_message(nas);
1974 error_setg(errp, "failed to set password: %s", msg);
1975 g_free(msg);
1976 }
1977
1978 done:
1979 g_free(user);
1980 g_free(wpass);
1981 g_free(rawpasswddata);
1982 }
1983
1984 /* register init/cleanup routines for stateful command groups */
ga_command_state_init(GAState * s,GACommandState * cs)1985 void ga_command_state_init(GAState *s, GACommandState *cs)
1986 {
1987 if (!vss_initialized()) {
1988 ga_command_state_add(cs, NULL, guest_fsfreeze_cleanup);
1989 }
1990 }
1991
1992 /* MINGW is missing two fields: IncomingFrames & OutgoingFrames */
1993 typedef struct _GA_WTSINFOA {
1994 WTS_CONNECTSTATE_CLASS State;
1995 DWORD SessionId;
1996 DWORD IncomingBytes;
1997 DWORD OutgoingBytes;
1998 DWORD IncomingFrames;
1999 DWORD OutgoingFrames;
2000 DWORD IncomingCompressedBytes;
2001 DWORD OutgoingCompressedBy;
2002 CHAR WinStationName[WINSTATIONNAME_LENGTH];
2003 CHAR Domain[DOMAIN_LENGTH];
2004 CHAR UserName[USERNAME_LENGTH + 1];
2005 LARGE_INTEGER ConnectTime;
2006 LARGE_INTEGER DisconnectTime;
2007 LARGE_INTEGER LastInputTime;
2008 LARGE_INTEGER LogonTime;
2009 LARGE_INTEGER CurrentTime;
2010
2011 } GA_WTSINFOA;
2012
qmp_guest_get_users(Error ** errp)2013 GuestUserList *qmp_guest_get_users(Error **errp)
2014 {
2015 #define QGA_NANOSECONDS 10000000
2016
2017 GHashTable *cache = NULL;
2018 GuestUserList *head = NULL, **tail = &head;
2019
2020 DWORD buffer_size = 0, count = 0, i = 0;
2021 GA_WTSINFOA *info = NULL;
2022 WTS_SESSION_INFOA *entries = NULL;
2023 GuestUser *user = NULL;
2024 gpointer value = NULL;
2025 INT64 login = 0;
2026 double login_time = 0;
2027
2028 cache = g_hash_table_new(g_str_hash, g_str_equal);
2029
2030 if (WTSEnumerateSessionsA(NULL, 0, 1, &entries, &count)) {
2031 for (i = 0; i < count; ++i) {
2032 buffer_size = 0;
2033 info = NULL;
2034 if (WTSQuerySessionInformationA(
2035 NULL,
2036 entries[i].SessionId,
2037 WTSSessionInfo,
2038 (LPSTR *)&info,
2039 &buffer_size
2040 )) {
2041
2042 if (strlen(info->UserName) == 0) {
2043 WTSFreeMemory(info);
2044 continue;
2045 }
2046
2047 login = info->LogonTime.QuadPart;
2048 login -= W32_FT_OFFSET;
2049 login_time = ((double)login) / QGA_NANOSECONDS;
2050
2051 if (g_hash_table_contains(cache, info->UserName)) {
2052 value = g_hash_table_lookup(cache, info->UserName);
2053 user = (GuestUser *)value;
2054 if (user->login_time > login_time) {
2055 user->login_time = login_time;
2056 }
2057 } else {
2058 user = g_new0(GuestUser, 1);
2059
2060 user->user = g_strdup(info->UserName);
2061 user->domain = g_strdup(info->Domain);
2062
2063 user->login_time = login_time;
2064
2065 g_hash_table_add(cache, user->user);
2066
2067 QAPI_LIST_APPEND(tail, user);
2068 }
2069 }
2070 WTSFreeMemory(info);
2071 }
2072 WTSFreeMemory(entries);
2073 }
2074 g_hash_table_destroy(cache);
2075 return head;
2076 }
2077
2078 typedef struct _ga_matrix_lookup_t {
2079 int major;
2080 int minor;
2081 const char *version;
2082 const char *version_id;
2083 } ga_matrix_lookup_t;
2084
2085 static const ga_matrix_lookup_t WIN_CLIENT_VERSION_MATRIX[] = {
2086 { 5, 0, "Microsoft Windows 2000", "2000"},
2087 { 5, 1, "Microsoft Windows XP", "xp"},
2088 { 6, 0, "Microsoft Windows Vista", "vista"},
2089 { 6, 1, "Microsoft Windows 7" "7"},
2090 { 6, 2, "Microsoft Windows 8", "8"},
2091 { 6, 3, "Microsoft Windows 8.1", "8.1"},
2092 { }
2093 };
2094
2095 static const ga_matrix_lookup_t WIN_SERVER_VERSION_MATRIX[] = {
2096 { 5, 2, "Microsoft Windows Server 2003", "2003"},
2097 { 6, 0, "Microsoft Windows Server 2008", "2008"},
2098 { 6, 1, "Microsoft Windows Server 2008 R2", "2008r2"},
2099 { 6, 2, "Microsoft Windows Server 2012", "2012"},
2100 { 6, 3, "Microsoft Windows Server 2012 R2", "2012r2"},
2101 { },
2102 };
2103
2104 typedef struct _ga_win_10_0_t {
2105 int first_build;
2106 const char *version;
2107 const char *version_id;
2108 } ga_win_10_0_t;
2109
2110 static const ga_win_10_0_t WIN_10_0_SERVER_VERSION_MATRIX[] = {
2111 {14393, "Microsoft Windows Server 2016", "2016"},
2112 {17763, "Microsoft Windows Server 2019", "2019"},
2113 {20344, "Microsoft Windows Server 2022", "2022"},
2114 {26040, "Microsoft Windows Server 2025", "2025"},
2115 { }
2116 };
2117
2118 static const ga_win_10_0_t WIN_10_0_CLIENT_VERSION_MATRIX[] = {
2119 {10240, "Microsoft Windows 10", "10"},
2120 {22000, "Microsoft Windows 11", "11"},
2121 { }
2122 };
2123
ga_get_win_version(RTL_OSVERSIONINFOEXW * info,Error ** errp)2124 static void ga_get_win_version(RTL_OSVERSIONINFOEXW *info, Error **errp)
2125 {
2126 typedef NTSTATUS(WINAPI *rtl_get_version_t)(
2127 RTL_OSVERSIONINFOEXW *os_version_info_ex);
2128
2129 info->dwOSVersionInfoSize = sizeof(RTL_OSVERSIONINFOEXW);
2130
2131 HMODULE module = GetModuleHandle("ntdll");
2132 PVOID fun = GetProcAddress(module, "RtlGetVersion");
2133 if (fun == NULL) {
2134 error_setg(errp, "Failed to get address of RtlGetVersion");
2135 return;
2136 }
2137
2138 rtl_get_version_t rtl_get_version = (rtl_get_version_t)fun;
2139 rtl_get_version(info);
2140 }
2141
ga_get_win_name(const OSVERSIONINFOEXW * os_version,bool id)2142 static char *ga_get_win_name(const OSVERSIONINFOEXW *os_version, bool id)
2143 {
2144 DWORD major = os_version->dwMajorVersion;
2145 DWORD minor = os_version->dwMinorVersion;
2146 DWORD build = os_version->dwBuildNumber;
2147 int tbl_idx = (os_version->wProductType != VER_NT_WORKSTATION);
2148 const ga_matrix_lookup_t *table = tbl_idx ?
2149 WIN_SERVER_VERSION_MATRIX : WIN_CLIENT_VERSION_MATRIX;
2150 const ga_win_10_0_t *win_10_0_table = tbl_idx ?
2151 WIN_10_0_SERVER_VERSION_MATRIX : WIN_10_0_CLIENT_VERSION_MATRIX;
2152 const ga_win_10_0_t *win_10_0_version = NULL;
2153 while (table->version != NULL) {
2154 if (major == 10 && minor == 0) {
2155 while (win_10_0_table->version != NULL) {
2156 if (build >= win_10_0_table->first_build) {
2157 win_10_0_version = win_10_0_table;
2158 }
2159 win_10_0_table++;
2160 }
2161 if (win_10_0_table) {
2162 if (id) {
2163 return g_strdup(win_10_0_version->version_id);
2164 } else {
2165 return g_strdup(win_10_0_version->version);
2166 }
2167 }
2168 } else if (major == table->major && minor == table->minor) {
2169 if (id) {
2170 return g_strdup(table->version_id);
2171 } else {
2172 return g_strdup(table->version);
2173 }
2174 }
2175 ++table;
2176 }
2177 slog("failed to lookup Windows version: major=%lu, minor=%lu",
2178 major, minor);
2179 return g_strdup("N/A");
2180 }
2181
ga_get_win_product_name(Error ** errp)2182 static char *ga_get_win_product_name(Error **errp)
2183 {
2184 HKEY key = INVALID_HANDLE_VALUE;
2185 DWORD size = 128;
2186 char *result = g_malloc0(size);
2187 LONG err = ERROR_SUCCESS;
2188
2189 err = RegOpenKeyA(HKEY_LOCAL_MACHINE,
2190 "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion",
2191 &key);
2192 if (err != ERROR_SUCCESS) {
2193 error_setg_win32(errp, err, "failed to open registry key");
2194 g_free(result);
2195 return NULL;
2196 }
2197
2198 err = RegQueryValueExA(key, "ProductName", NULL, NULL,
2199 (LPBYTE)result, &size);
2200 if (err == ERROR_MORE_DATA) {
2201 slog("ProductName longer than expected (%lu bytes), retrying",
2202 size);
2203 g_free(result);
2204 result = NULL;
2205 if (size > 0) {
2206 result = g_malloc0(size);
2207 err = RegQueryValueExA(key, "ProductName", NULL, NULL,
2208 (LPBYTE)result, &size);
2209 }
2210 }
2211 if (err != ERROR_SUCCESS) {
2212 error_setg_win32(errp, err, "failed to retrieve ProductName");
2213 goto fail;
2214 }
2215
2216 RegCloseKey(key);
2217 return result;
2218
2219 fail:
2220 if (key != INVALID_HANDLE_VALUE) {
2221 RegCloseKey(key);
2222 }
2223 g_free(result);
2224 return NULL;
2225 }
2226
ga_get_current_arch(void)2227 static char *ga_get_current_arch(void)
2228 {
2229 SYSTEM_INFO info;
2230 GetNativeSystemInfo(&info);
2231 char *result = NULL;
2232 switch (info.wProcessorArchitecture) {
2233 case PROCESSOR_ARCHITECTURE_AMD64:
2234 result = g_strdup("x86_64");
2235 break;
2236 case PROCESSOR_ARCHITECTURE_ARM:
2237 result = g_strdup("arm");
2238 break;
2239 case PROCESSOR_ARCHITECTURE_IA64:
2240 result = g_strdup("ia64");
2241 break;
2242 case PROCESSOR_ARCHITECTURE_INTEL:
2243 result = g_strdup("x86");
2244 break;
2245 case PROCESSOR_ARCHITECTURE_UNKNOWN:
2246 default:
2247 slog("unknown processor architecture 0x%0x",
2248 info.wProcessorArchitecture);
2249 result = g_strdup("unknown");
2250 break;
2251 }
2252 return result;
2253 }
2254
qmp_guest_get_osinfo(Error ** errp)2255 GuestOSInfo *qmp_guest_get_osinfo(Error **errp)
2256 {
2257 Error *local_err = NULL;
2258 OSVERSIONINFOEXW os_version = {0};
2259 bool server;
2260 char *product_name;
2261 GuestOSInfo *info;
2262
2263 ga_get_win_version(&os_version, &local_err);
2264 if (local_err) {
2265 error_propagate(errp, local_err);
2266 return NULL;
2267 }
2268
2269 server = os_version.wProductType != VER_NT_WORKSTATION;
2270 product_name = ga_get_win_product_name(errp);
2271 if (product_name == NULL) {
2272 return NULL;
2273 }
2274
2275 info = g_new0(GuestOSInfo, 1);
2276
2277 info->kernel_version = g_strdup_printf("%lu.%lu",
2278 os_version.dwMajorVersion,
2279 os_version.dwMinorVersion);
2280 info->kernel_release = g_strdup_printf("%lu",
2281 os_version.dwBuildNumber);
2282 info->machine = ga_get_current_arch();
2283
2284 info->id = g_strdup("mswindows");
2285 info->name = g_strdup("Microsoft Windows");
2286 info->pretty_name = product_name;
2287 info->version = ga_get_win_name(&os_version, false);
2288 info->version_id = ga_get_win_name(&os_version, true);
2289 info->variant = g_strdup(server ? "server" : "client");
2290 info->variant_id = g_strdup(server ? "server" : "client");
2291
2292 return info;
2293 }
2294
2295 /*
2296 * Safely get device property. Returned strings are using wide characters.
2297 * Caller is responsible for freeing the buffer.
2298 */
cm_get_property(DEVINST devInst,const DEVPROPKEY * propName,PDEVPROPTYPE propType)2299 static LPBYTE cm_get_property(DEVINST devInst, const DEVPROPKEY *propName,
2300 PDEVPROPTYPE propType)
2301 {
2302 CONFIGRET cr;
2303 g_autofree LPBYTE buffer = NULL;
2304 ULONG buffer_len = 0;
2305
2306 /* First query for needed space */
2307 cr = CM_Get_DevNode_PropertyW(devInst, propName, propType,
2308 buffer, &buffer_len, 0);
2309 if (cr != CR_SUCCESS && cr != CR_BUFFER_SMALL) {
2310
2311 slog("failed to get property size, error=0x%lx", cr);
2312 return NULL;
2313 }
2314 buffer = g_new0(BYTE, buffer_len + 1);
2315 cr = CM_Get_DevNode_PropertyW(devInst, propName, propType,
2316 buffer, &buffer_len, 0);
2317 if (cr != CR_SUCCESS) {
2318 slog("failed to get device property, error=0x%lx", cr);
2319 return NULL;
2320 }
2321 return g_steal_pointer(&buffer);
2322 }
2323
ga_get_hardware_ids(DEVINST devInstance)2324 static GStrv ga_get_hardware_ids(DEVINST devInstance)
2325 {
2326 GArray *values = NULL;
2327 DEVPROPTYPE cm_type;
2328 LPWSTR id;
2329 g_autofree LPWSTR property = (LPWSTR)cm_get_property(devInstance,
2330 &qga_DEVPKEY_Device_HardwareIds, &cm_type);
2331 if (property == NULL) {
2332 slog("failed to get hardware IDs");
2333 return NULL;
2334 }
2335 if (*property == '\0') {
2336 /* empty list */
2337 return NULL;
2338 }
2339 values = g_array_new(TRUE, TRUE, sizeof(gchar *));
2340 for (id = property; '\0' != *id; id += lstrlenW(id) + 1) {
2341 gchar *id8 = g_utf16_to_utf8(id, -1, NULL, NULL, NULL);
2342 g_array_append_val(values, id8);
2343 }
2344 return (GStrv)g_array_free(values, FALSE);
2345 }
2346
2347 /*
2348 * https://docs.microsoft.com/en-us/windows-hardware/drivers/install/identifiers-for-pci-devices
2349 */
2350 #define DEVICE_PCI_RE "PCI\\\\VEN_(1AF4|1B36)&DEV_([0-9A-B]{4})(&|$)"
2351
qmp_guest_get_devices(Error ** errp)2352 GuestDeviceInfoList *qmp_guest_get_devices(Error **errp)
2353 {
2354 GuestDeviceInfoList *head = NULL, **tail = &head;
2355 HDEVINFO dev_info = INVALID_HANDLE_VALUE;
2356 SP_DEVINFO_DATA dev_info_data;
2357 int i, j;
2358 GError *gerr = NULL;
2359 g_autoptr(GRegex) device_pci_re = NULL;
2360 DEVPROPTYPE cm_type;
2361
2362 device_pci_re = g_regex_new(DEVICE_PCI_RE,
2363 G_REGEX_ANCHORED | G_REGEX_OPTIMIZE, 0,
2364 &gerr);
2365 g_assert(device_pci_re != NULL);
2366
2367 dev_info_data.cbSize = sizeof(SP_DEVINFO_DATA);
2368 dev_info = SetupDiGetClassDevs(0, 0, 0, DIGCF_PRESENT | DIGCF_ALLCLASSES);
2369 if (dev_info == INVALID_HANDLE_VALUE) {
2370 error_setg(errp, "failed to get device tree");
2371 return NULL;
2372 }
2373
2374 slog("enumerating devices");
2375 for (i = 0; SetupDiEnumDeviceInfo(dev_info, i, &dev_info_data); i++) {
2376 bool skip = true;
2377 g_autofree LPWSTR name = NULL;
2378 g_autofree LPFILETIME date = NULL;
2379 g_autofree LPWSTR version = NULL;
2380 g_auto(GStrv) hw_ids = NULL;
2381 g_autoptr(GuestDeviceInfo) device = g_new0(GuestDeviceInfo, 1);
2382 g_autofree char *vendor_id = NULL;
2383 g_autofree char *device_id = NULL;
2384
2385 name = (LPWSTR)cm_get_property(dev_info_data.DevInst,
2386 &qga_DEVPKEY_NAME, &cm_type);
2387 if (name == NULL) {
2388 slog("failed to get device description");
2389 continue;
2390 }
2391 device->driver_name = g_utf16_to_utf8(name, -1, NULL, NULL, NULL);
2392 if (device->driver_name == NULL) {
2393 error_setg(errp, "conversion to utf8 failed (driver name)");
2394 return NULL;
2395 }
2396 slog("querying device: %s", device->driver_name);
2397 hw_ids = ga_get_hardware_ids(dev_info_data.DevInst);
2398 if (hw_ids == NULL) {
2399 continue;
2400 }
2401 for (j = 0; hw_ids[j] != NULL; j++) {
2402 g_autoptr(GMatchInfo) match_info;
2403 GuestDeviceIdPCI *id;
2404 if (!g_regex_match(device_pci_re, hw_ids[j], 0, &match_info)) {
2405 continue;
2406 }
2407 skip = false;
2408
2409 vendor_id = g_match_info_fetch(match_info, 1);
2410 device_id = g_match_info_fetch(match_info, 2);
2411
2412 device->id = g_new0(GuestDeviceId, 1);
2413 device->id->type = GUEST_DEVICE_TYPE_PCI;
2414 id = &device->id->u.pci;
2415 id->vendor_id = g_ascii_strtoull(vendor_id, NULL, 16);
2416 id->device_id = g_ascii_strtoull(device_id, NULL, 16);
2417
2418 break;
2419 }
2420 if (skip) {
2421 continue;
2422 }
2423
2424 version = (LPWSTR)cm_get_property(dev_info_data.DevInst,
2425 &qga_DEVPKEY_Device_DriverVersion, &cm_type);
2426 if (version == NULL) {
2427 slog("failed to get driver version");
2428 continue;
2429 }
2430 device->driver_version = g_utf16_to_utf8(version, -1, NULL,
2431 NULL, NULL);
2432 if (device->driver_version == NULL) {
2433 error_setg(errp, "conversion to utf8 failed (driver version)");
2434 return NULL;
2435 }
2436
2437 date = (LPFILETIME)cm_get_property(dev_info_data.DevInst,
2438 &qga_DEVPKEY_Device_DriverDate, &cm_type);
2439 if (date == NULL) {
2440 slog("failed to get driver date");
2441 continue;
2442 }
2443 device->driver_date = filetime_to_ns(date);
2444 device->has_driver_date = true;
2445
2446 slog("driver: %s\ndriver version: %" PRId64 ",%s\n",
2447 device->driver_name, device->driver_date,
2448 device->driver_version);
2449 QAPI_LIST_APPEND(tail, g_steal_pointer(&device));
2450 }
2451
2452 if (dev_info != INVALID_HANDLE_VALUE) {
2453 SetupDiDestroyDeviceInfoList(dev_info);
2454 }
2455 return head;
2456 }
2457
qga_get_host_name(Error ** errp)2458 char *qga_get_host_name(Error **errp)
2459 {
2460 wchar_t tmp[MAX_COMPUTERNAME_LENGTH + 1];
2461 DWORD size = G_N_ELEMENTS(tmp);
2462
2463 if (GetComputerNameW(tmp, &size) == 0) {
2464 error_setg_win32(errp, GetLastError(), "failed close handle");
2465 return NULL;
2466 }
2467
2468 return g_utf16_to_utf8(tmp, size, NULL, NULL, NULL);
2469 }
2470
2471
load_avg_callback(PVOID hCounter,BOOLEAN timedOut)2472 static VOID CALLBACK load_avg_callback(PVOID hCounter, BOOLEAN timedOut)
2473 {
2474 PDH_FMT_COUNTERVALUE displayValue;
2475 double currentLoad;
2476 PDH_STATUS err;
2477
2478 err = PdhGetFormattedCounterValue(
2479 (PDH_HCOUNTER)hCounter, PDH_FMT_DOUBLE, 0, &displayValue);
2480 /* Skip updating the load if we can't get the value successfully */
2481 if (err != ERROR_SUCCESS) {
2482 slog("PdhGetFormattedCounterValue failed to get load value with 0x%lx",
2483 err);
2484 return;
2485 }
2486 currentLoad = displayValue.doubleValue;
2487
2488 load_avg_1m = load_avg_1m * LOADAVG_FACTOR_1F + currentLoad * \
2489 (1.0 - LOADAVG_FACTOR_1F);
2490 load_avg_5m = load_avg_5m * LOADAVG_FACTOR_5F + currentLoad * \
2491 (1.0 - LOADAVG_FACTOR_5F);
2492 load_avg_15m = load_avg_15m * LOADAVG_FACTOR_15F + currentLoad * \
2493 (1.0 - LOADAVG_FACTOR_15F);
2494 }
2495
init_load_avg_counter(Error ** errp)2496 static BOOL init_load_avg_counter(Error **errp)
2497 {
2498 CONST WCHAR *szCounterPath = L"\\System\\Processor Queue Length";
2499 PDH_STATUS status;
2500 BOOL ret;
2501 HQUERY hQuery;
2502 HCOUNTER hCounter;
2503 HANDLE event;
2504 HANDLE waitHandle;
2505
2506 status = PdhOpenQueryW(NULL, 0, &hQuery);
2507 if (status != ERROR_SUCCESS) {
2508 /*
2509 * If the function fails, the return value is a system error code or
2510 * a PDH error code. error_setg_win32 cant translate PDH error code
2511 * properly, so just report it as is.
2512 */
2513 error_setg_win32(errp, (DWORD)status,
2514 "PdhOpenQueryW failed with 0x%lx", status);
2515 return FALSE;
2516 }
2517
2518 status = PdhAddEnglishCounterW(hQuery, szCounterPath, 0, &hCounter);
2519 if (status != ERROR_SUCCESS) {
2520 error_setg_win32(errp, (DWORD)status,
2521 "PdhAddEnglishCounterW failed with 0x%lx. Performance counters may be disabled.",
2522 status);
2523 PdhCloseQuery(hQuery);
2524 return FALSE;
2525 }
2526
2527 event = CreateEventW(NULL, FALSE, FALSE, L"LoadUpdateEvent");
2528 if (event == NULL) {
2529 error_setg_win32(errp, GetLastError(), "Create LoadUpdateEvent failed");
2530 PdhCloseQuery(hQuery);
2531 return FALSE;
2532 }
2533
2534 status = PdhCollectQueryDataEx(hQuery, LOADAVG_SAMPLING_INTERVAL, event);
2535 if (status != ERROR_SUCCESS) {
2536 error_setg_win32(errp, (DWORD)status,
2537 "PdhCollectQueryDataEx failed with 0x%lx", status);
2538 CloseHandle(event);
2539 PdhCloseQuery(hQuery);
2540 return FALSE;
2541 }
2542
2543 ret = RegisterWaitForSingleObject(
2544 &waitHandle,
2545 event,
2546 (WAITORTIMERCALLBACK)load_avg_callback,
2547 (PVOID)hCounter,
2548 INFINITE,
2549 WT_EXECUTEDEFAULT);
2550
2551 if (ret == 0) {
2552 error_setg_win32(errp, GetLastError(),
2553 "RegisterWaitForSingleObject failed");
2554 CloseHandle(event);
2555 PdhCloseQuery(hQuery);
2556 return FALSE;
2557 }
2558
2559 ga_set_load_avg_wait_handle(ga_state, waitHandle);
2560 ga_set_load_avg_event(ga_state, event);
2561 ga_set_load_avg_pdh_query(ga_state, hQuery);
2562
2563 return TRUE;
2564 }
2565
qmp_guest_get_load(Error ** errp)2566 GuestLoadAverage *qmp_guest_get_load(Error **errp)
2567 {
2568 /*
2569 * The load average logic calls PerformaceCounterAPI, which can result
2570 * in a performance penalty. This avoids running the load average logic
2571 * until a management application actually requests it. The load average
2572 * will not initially be very accurate, but assuming that any interested
2573 * management application will request it repeatedly throughout the lifetime
2574 * of the VM, this seems like a good mitigation.
2575 */
2576 if (ga_get_load_avg_pdh_query(ga_state) == NULL) {
2577 /* set initial values */
2578 load_avg_1m = 0;
2579 load_avg_5m = 0;
2580 load_avg_15m = 0;
2581
2582 if (init_load_avg_counter(errp) == false) {
2583 return NULL;
2584 }
2585 }
2586
2587 GuestLoadAverage *ret = NULL;
2588
2589 ret = g_new0(GuestLoadAverage, 1);
2590 ret->load1m = load_avg_1m;
2591 ret->load5m = load_avg_5m;
2592 ret->load15m = load_avg_15m;
2593 return ret;
2594 }
2595