]>
Commit | Line | Data |
---|---|---|
576d1abc JQ |
1 | /* |
2 | * VMStateInfo's for basic typse | |
3 | * | |
4 | * Copyright (c) 2009-2017 Red Hat Inc | |
5 | * | |
6 | * Authors: | |
7 | * Juan Quintela <quintela@redhat.com> | |
8 | * | |
9 | * This work is licensed under the terms of the GNU GPL, version 2 or later. | |
10 | * See the COPYING file in the top-level directory. | |
11 | */ | |
12 | ||
13 | #include "qemu/osdep.h" | |
08a0aee1 | 14 | #include "qemu-file.h" |
6666c96a | 15 | #include "migration.h" |
576d1abc JQ |
16 | #include "migration/vmstate.h" |
17 | #include "qemu/error-report.h" | |
18 | #include "qemu/queue.h" | |
19 | #include "trace.h" | |
20 | ||
21 | /* bool */ | |
22 | ||
03fee66f MAL |
23 | static int get_bool(QEMUFile *f, void *pv, size_t size, |
24 | const VMStateField *field) | |
576d1abc JQ |
25 | { |
26 | bool *v = pv; | |
27 | *v = qemu_get_byte(f); | |
28 | return 0; | |
29 | } | |
30 | ||
03fee66f MAL |
31 | static int put_bool(QEMUFile *f, void *pv, size_t size, |
32 | const VMStateField *field, QJSON *vmdesc) | |
576d1abc JQ |
33 | { |
34 | bool *v = pv; | |
35 | qemu_put_byte(f, *v); | |
36 | return 0; | |
37 | } | |
38 | ||
39 | const VMStateInfo vmstate_info_bool = { | |
40 | .name = "bool", | |
41 | .get = get_bool, | |
42 | .put = put_bool, | |
43 | }; | |
44 | ||
45 | /* 8 bit int */ | |
46 | ||
03fee66f MAL |
47 | static int get_int8(QEMUFile *f, void *pv, size_t size, |
48 | const VMStateField *field) | |
576d1abc JQ |
49 | { |
50 | int8_t *v = pv; | |
51 | qemu_get_s8s(f, v); | |
52 | return 0; | |
53 | } | |
54 | ||
03fee66f MAL |
55 | static int put_int8(QEMUFile *f, void *pv, size_t size, |
56 | const VMStateField *field, QJSON *vmdesc) | |
576d1abc JQ |
57 | { |
58 | int8_t *v = pv; | |
59 | qemu_put_s8s(f, v); | |
60 | return 0; | |
61 | } | |
62 | ||
63 | const VMStateInfo vmstate_info_int8 = { | |
64 | .name = "int8", | |
65 | .get = get_int8, | |
66 | .put = put_int8, | |
67 | }; | |
68 | ||
69 | /* 16 bit int */ | |
70 | ||
03fee66f MAL |
71 | static int get_int16(QEMUFile *f, void *pv, size_t size, |
72 | const VMStateField *field) | |
576d1abc JQ |
73 | { |
74 | int16_t *v = pv; | |
75 | qemu_get_sbe16s(f, v); | |
76 | return 0; | |
77 | } | |
78 | ||
03fee66f MAL |
79 | static int put_int16(QEMUFile *f, void *pv, size_t size, |
80 | const VMStateField *field, QJSON *vmdesc) | |
576d1abc JQ |
81 | { |
82 | int16_t *v = pv; | |
83 | qemu_put_sbe16s(f, v); | |
84 | return 0; | |
85 | } | |
86 | ||
87 | const VMStateInfo vmstate_info_int16 = { | |
88 | .name = "int16", | |
89 | .get = get_int16, | |
90 | .put = put_int16, | |
91 | }; | |
92 | ||
93 | /* 32 bit int */ | |
94 | ||
03fee66f MAL |
95 | static int get_int32(QEMUFile *f, void *pv, size_t size, |
96 | const VMStateField *field) | |
576d1abc JQ |
97 | { |
98 | int32_t *v = pv; | |
99 | qemu_get_sbe32s(f, v); | |
100 | return 0; | |
101 | } | |
102 | ||
03fee66f MAL |
103 | static int put_int32(QEMUFile *f, void *pv, size_t size, |
104 | const VMStateField *field, QJSON *vmdesc) | |
576d1abc JQ |
105 | { |
106 | int32_t *v = pv; | |
107 | qemu_put_sbe32s(f, v); | |
108 | return 0; | |
109 | } | |
110 | ||
111 | const VMStateInfo vmstate_info_int32 = { | |
112 | .name = "int32", | |
113 | .get = get_int32, | |
114 | .put = put_int32, | |
115 | }; | |
116 | ||
117 | /* 32 bit int. See that the received value is the same than the one | |
118 | in the field */ | |
119 | ||
120 | static int get_int32_equal(QEMUFile *f, void *pv, size_t size, | |
03fee66f | 121 | const VMStateField *field) |
576d1abc JQ |
122 | { |
123 | int32_t *v = pv; | |
124 | int32_t v2; | |
125 | qemu_get_sbe32s(f, &v2); | |
126 | ||
127 | if (*v == v2) { | |
128 | return 0; | |
129 | } | |
130 | error_report("%" PRIx32 " != %" PRIx32, *v, v2); | |
d2164ad3 HP |
131 | if (field->err_hint) { |
132 | error_printf("%s\n", field->err_hint); | |
133 | } | |
576d1abc JQ |
134 | return -EINVAL; |
135 | } | |
136 | ||
137 | const VMStateInfo vmstate_info_int32_equal = { | |
138 | .name = "int32 equal", | |
139 | .get = get_int32_equal, | |
140 | .put = put_int32, | |
141 | }; | |
142 | ||
143 | /* 32 bit int. Check that the received value is non-negative | |
144 | * and less than or equal to the one in the field. | |
145 | */ | |
146 | ||
03fee66f MAL |
147 | static int get_int32_le(QEMUFile *f, void *pv, size_t size, |
148 | const VMStateField *field) | |
576d1abc JQ |
149 | { |
150 | int32_t *cur = pv; | |
151 | int32_t loaded; | |
152 | qemu_get_sbe32s(f, &loaded); | |
153 | ||
154 | if (loaded >= 0 && loaded <= *cur) { | |
155 | *cur = loaded; | |
156 | return 0; | |
157 | } | |
158 | error_report("Invalid value %" PRId32 | |
159 | " expecting positive value <= %" PRId32, | |
160 | loaded, *cur); | |
161 | return -EINVAL; | |
162 | } | |
163 | ||
164 | const VMStateInfo vmstate_info_int32_le = { | |
165 | .name = "int32 le", | |
166 | .get = get_int32_le, | |
167 | .put = put_int32, | |
168 | }; | |
169 | ||
170 | /* 64 bit int */ | |
171 | ||
03fee66f MAL |
172 | static int get_int64(QEMUFile *f, void *pv, size_t size, |
173 | const VMStateField *field) | |
576d1abc JQ |
174 | { |
175 | int64_t *v = pv; | |
176 | qemu_get_sbe64s(f, v); | |
177 | return 0; | |
178 | } | |
179 | ||
03fee66f MAL |
180 | static int put_int64(QEMUFile *f, void *pv, size_t size, |
181 | const VMStateField *field, QJSON *vmdesc) | |
576d1abc JQ |
182 | { |
183 | int64_t *v = pv; | |
184 | qemu_put_sbe64s(f, v); | |
185 | return 0; | |
186 | } | |
187 | ||
188 | const VMStateInfo vmstate_info_int64 = { | |
189 | .name = "int64", | |
190 | .get = get_int64, | |
191 | .put = put_int64, | |
192 | }; | |
193 | ||
194 | /* 8 bit unsigned int */ | |
195 | ||
03fee66f MAL |
196 | static int get_uint8(QEMUFile *f, void *pv, size_t size, |
197 | const VMStateField *field) | |
576d1abc JQ |
198 | { |
199 | uint8_t *v = pv; | |
200 | qemu_get_8s(f, v); | |
201 | return 0; | |
202 | } | |
203 | ||
03fee66f MAL |
204 | static int put_uint8(QEMUFile *f, void *pv, size_t size, |
205 | const VMStateField *field, QJSON *vmdesc) | |
576d1abc JQ |
206 | { |
207 | uint8_t *v = pv; | |
208 | qemu_put_8s(f, v); | |
209 | return 0; | |
210 | } | |
211 | ||
212 | const VMStateInfo vmstate_info_uint8 = { | |
213 | .name = "uint8", | |
214 | .get = get_uint8, | |
215 | .put = put_uint8, | |
216 | }; | |
217 | ||
218 | /* 16 bit unsigned int */ | |
219 | ||
03fee66f MAL |
220 | static int get_uint16(QEMUFile *f, void *pv, size_t size, |
221 | const VMStateField *field) | |
576d1abc JQ |
222 | { |
223 | uint16_t *v = pv; | |
224 | qemu_get_be16s(f, v); | |
225 | return 0; | |
226 | } | |
227 | ||
03fee66f MAL |
228 | static int put_uint16(QEMUFile *f, void *pv, size_t size, |
229 | const VMStateField *field, QJSON *vmdesc) | |
576d1abc JQ |
230 | { |
231 | uint16_t *v = pv; | |
232 | qemu_put_be16s(f, v); | |
233 | return 0; | |
234 | } | |
235 | ||
236 | const VMStateInfo vmstate_info_uint16 = { | |
237 | .name = "uint16", | |
238 | .get = get_uint16, | |
239 | .put = put_uint16, | |
240 | }; | |
241 | ||
242 | /* 32 bit unsigned int */ | |
243 | ||
03fee66f MAL |
244 | static int get_uint32(QEMUFile *f, void *pv, size_t size, |
245 | const VMStateField *field) | |
576d1abc JQ |
246 | { |
247 | uint32_t *v = pv; | |
248 | qemu_get_be32s(f, v); | |
249 | return 0; | |
250 | } | |
251 | ||
03fee66f MAL |
252 | static int put_uint32(QEMUFile *f, void *pv, size_t size, |
253 | const VMStateField *field, QJSON *vmdesc) | |
576d1abc JQ |
254 | { |
255 | uint32_t *v = pv; | |
256 | qemu_put_be32s(f, v); | |
257 | return 0; | |
258 | } | |
259 | ||
260 | const VMStateInfo vmstate_info_uint32 = { | |
261 | .name = "uint32", | |
262 | .get = get_uint32, | |
263 | .put = put_uint32, | |
264 | }; | |
265 | ||
266 | /* 32 bit uint. See that the received value is the same than the one | |
267 | in the field */ | |
268 | ||
269 | static int get_uint32_equal(QEMUFile *f, void *pv, size_t size, | |
03fee66f | 270 | const VMStateField *field) |
576d1abc JQ |
271 | { |
272 | uint32_t *v = pv; | |
273 | uint32_t v2; | |
274 | qemu_get_be32s(f, &v2); | |
275 | ||
276 | if (*v == v2) { | |
277 | return 0; | |
278 | } | |
279 | error_report("%" PRIx32 " != %" PRIx32, *v, v2); | |
d2164ad3 HP |
280 | if (field->err_hint) { |
281 | error_printf("%s\n", field->err_hint); | |
282 | } | |
576d1abc JQ |
283 | return -EINVAL; |
284 | } | |
285 | ||
286 | const VMStateInfo vmstate_info_uint32_equal = { | |
287 | .name = "uint32 equal", | |
288 | .get = get_uint32_equal, | |
289 | .put = put_uint32, | |
290 | }; | |
291 | ||
292 | /* 64 bit unsigned int */ | |
293 | ||
03fee66f MAL |
294 | static int get_uint64(QEMUFile *f, void *pv, size_t size, |
295 | const VMStateField *field) | |
576d1abc JQ |
296 | { |
297 | uint64_t *v = pv; | |
298 | qemu_get_be64s(f, v); | |
299 | return 0; | |
300 | } | |
301 | ||
03fee66f MAL |
302 | static int put_uint64(QEMUFile *f, void *pv, size_t size, |
303 | const VMStateField *field, QJSON *vmdesc) | |
576d1abc JQ |
304 | { |
305 | uint64_t *v = pv; | |
306 | qemu_put_be64s(f, v); | |
307 | return 0; | |
308 | } | |
309 | ||
310 | const VMStateInfo vmstate_info_uint64 = { | |
311 | .name = "uint64", | |
312 | .get = get_uint64, | |
313 | .put = put_uint64, | |
314 | }; | |
315 | ||
03fee66f MAL |
316 | static int get_nullptr(QEMUFile *f, void *pv, size_t size, |
317 | const VMStateField *field) | |
576d1abc JQ |
318 | |
319 | { | |
320 | if (qemu_get_byte(f) == VMS_NULLPTR_MARKER) { | |
321 | return 0; | |
322 | } | |
323 | error_report("vmstate: get_nullptr expected VMS_NULLPTR_MARKER"); | |
324 | return -EINVAL; | |
325 | } | |
326 | ||
327 | static int put_nullptr(QEMUFile *f, void *pv, size_t size, | |
03fee66f | 328 | const VMStateField *field, QJSON *vmdesc) |
576d1abc JQ |
329 | |
330 | { | |
331 | if (pv == NULL) { | |
332 | qemu_put_byte(f, VMS_NULLPTR_MARKER); | |
333 | return 0; | |
334 | } | |
335 | error_report("vmstate: put_nullptr must be called with pv == NULL"); | |
336 | return -EINVAL; | |
337 | } | |
338 | ||
339 | const VMStateInfo vmstate_info_nullptr = { | |
340 | .name = "uint64", | |
341 | .get = get_nullptr, | |
342 | .put = put_nullptr, | |
343 | }; | |
344 | ||
345 | /* 64 bit unsigned int. See that the received value is the same than the one | |
346 | in the field */ | |
347 | ||
348 | static int get_uint64_equal(QEMUFile *f, void *pv, size_t size, | |
03fee66f | 349 | const VMStateField *field) |
576d1abc JQ |
350 | { |
351 | uint64_t *v = pv; | |
352 | uint64_t v2; | |
353 | qemu_get_be64s(f, &v2); | |
354 | ||
355 | if (*v == v2) { | |
356 | return 0; | |
357 | } | |
358 | error_report("%" PRIx64 " != %" PRIx64, *v, v2); | |
d2164ad3 HP |
359 | if (field->err_hint) { |
360 | error_printf("%s\n", field->err_hint); | |
361 | } | |
576d1abc JQ |
362 | return -EINVAL; |
363 | } | |
364 | ||
365 | const VMStateInfo vmstate_info_uint64_equal = { | |
366 | .name = "int64 equal", | |
367 | .get = get_uint64_equal, | |
368 | .put = put_uint64, | |
369 | }; | |
370 | ||
371 | /* 8 bit int. See that the received value is the same than the one | |
372 | in the field */ | |
373 | ||
374 | static int get_uint8_equal(QEMUFile *f, void *pv, size_t size, | |
03fee66f | 375 | const VMStateField *field) |
576d1abc JQ |
376 | { |
377 | uint8_t *v = pv; | |
378 | uint8_t v2; | |
379 | qemu_get_8s(f, &v2); | |
380 | ||
381 | if (*v == v2) { | |
382 | return 0; | |
383 | } | |
384 | error_report("%x != %x", *v, v2); | |
d2164ad3 HP |
385 | if (field->err_hint) { |
386 | error_printf("%s\n", field->err_hint); | |
387 | } | |
576d1abc JQ |
388 | return -EINVAL; |
389 | } | |
390 | ||
391 | const VMStateInfo vmstate_info_uint8_equal = { | |
392 | .name = "uint8 equal", | |
393 | .get = get_uint8_equal, | |
394 | .put = put_uint8, | |
395 | }; | |
396 | ||
397 | /* 16 bit unsigned int int. See that the received value is the same than the one | |
398 | in the field */ | |
399 | ||
400 | static int get_uint16_equal(QEMUFile *f, void *pv, size_t size, | |
03fee66f | 401 | const VMStateField *field) |
576d1abc JQ |
402 | { |
403 | uint16_t *v = pv; | |
404 | uint16_t v2; | |
405 | qemu_get_be16s(f, &v2); | |
406 | ||
407 | if (*v == v2) { | |
408 | return 0; | |
409 | } | |
410 | error_report("%x != %x", *v, v2); | |
d2164ad3 HP |
411 | if (field->err_hint) { |
412 | error_printf("%s\n", field->err_hint); | |
413 | } | |
576d1abc JQ |
414 | return -EINVAL; |
415 | } | |
416 | ||
417 | const VMStateInfo vmstate_info_uint16_equal = { | |
418 | .name = "uint16 equal", | |
419 | .get = get_uint16_equal, | |
420 | .put = put_uint16, | |
421 | }; | |
422 | ||
423 | /* floating point */ | |
424 | ||
425 | static int get_float64(QEMUFile *f, void *pv, size_t size, | |
03fee66f | 426 | const VMStateField *field) |
576d1abc JQ |
427 | { |
428 | float64 *v = pv; | |
429 | ||
430 | *v = make_float64(qemu_get_be64(f)); | |
431 | return 0; | |
432 | } | |
433 | ||
03fee66f MAL |
434 | static int put_float64(QEMUFile *f, void *pv, size_t size, |
435 | const VMStateField *field, QJSON *vmdesc) | |
576d1abc JQ |
436 | { |
437 | uint64_t *v = pv; | |
438 | ||
439 | qemu_put_be64(f, float64_val(*v)); | |
440 | return 0; | |
441 | } | |
442 | ||
443 | const VMStateInfo vmstate_info_float64 = { | |
444 | .name = "float64", | |
445 | .get = get_float64, | |
446 | .put = put_float64, | |
447 | }; | |
448 | ||
449 | /* CPU_DoubleU type */ | |
450 | ||
451 | static int get_cpudouble(QEMUFile *f, void *pv, size_t size, | |
03fee66f | 452 | const VMStateField *field) |
576d1abc JQ |
453 | { |
454 | CPU_DoubleU *v = pv; | |
455 | qemu_get_be32s(f, &v->l.upper); | |
456 | qemu_get_be32s(f, &v->l.lower); | |
457 | return 0; | |
458 | } | |
459 | ||
460 | static int put_cpudouble(QEMUFile *f, void *pv, size_t size, | |
03fee66f | 461 | const VMStateField *field, QJSON *vmdesc) |
576d1abc JQ |
462 | { |
463 | CPU_DoubleU *v = pv; | |
464 | qemu_put_be32s(f, &v->l.upper); | |
465 | qemu_put_be32s(f, &v->l.lower); | |
466 | return 0; | |
467 | } | |
468 | ||
469 | const VMStateInfo vmstate_info_cpudouble = { | |
470 | .name = "CPU_Double_U", | |
471 | .get = get_cpudouble, | |
472 | .put = put_cpudouble, | |
473 | }; | |
474 | ||
475 | /* uint8_t buffers */ | |
476 | ||
477 | static int get_buffer(QEMUFile *f, void *pv, size_t size, | |
03fee66f | 478 | const VMStateField *field) |
576d1abc JQ |
479 | { |
480 | uint8_t *v = pv; | |
481 | qemu_get_buffer(f, v, size); | |
482 | return 0; | |
483 | } | |
484 | ||
03fee66f MAL |
485 | static int put_buffer(QEMUFile *f, void *pv, size_t size, |
486 | const VMStateField *field, QJSON *vmdesc) | |
576d1abc JQ |
487 | { |
488 | uint8_t *v = pv; | |
489 | qemu_put_buffer(f, v, size); | |
490 | return 0; | |
491 | } | |
492 | ||
493 | const VMStateInfo vmstate_info_buffer = { | |
494 | .name = "buffer", | |
495 | .get = get_buffer, | |
496 | .put = put_buffer, | |
497 | }; | |
498 | ||
499 | /* unused buffers: space that was used for some fields that are | |
500 | not useful anymore */ | |
501 | ||
502 | static int get_unused_buffer(QEMUFile *f, void *pv, size_t size, | |
03fee66f | 503 | const VMStateField *field) |
576d1abc JQ |
504 | { |
505 | uint8_t buf[1024]; | |
506 | int block_len; | |
507 | ||
508 | while (size > 0) { | |
509 | block_len = MIN(sizeof(buf), size); | |
510 | size -= block_len; | |
511 | qemu_get_buffer(f, buf, block_len); | |
512 | } | |
513 | return 0; | |
514 | } | |
515 | ||
516 | static int put_unused_buffer(QEMUFile *f, void *pv, size_t size, | |
03fee66f | 517 | const VMStateField *field, QJSON *vmdesc) |
576d1abc JQ |
518 | { |
519 | static const uint8_t buf[1024]; | |
520 | int block_len; | |
521 | ||
522 | while (size > 0) { | |
523 | block_len = MIN(sizeof(buf), size); | |
524 | size -= block_len; | |
525 | qemu_put_buffer(f, buf, block_len); | |
526 | } | |
527 | ||
528 | return 0; | |
529 | } | |
530 | ||
531 | const VMStateInfo vmstate_info_unused_buffer = { | |
532 | .name = "unused_buffer", | |
533 | .get = get_unused_buffer, | |
534 | .put = put_unused_buffer, | |
535 | }; | |
536 | ||
537 | /* vmstate_info_tmp, see VMSTATE_WITH_TMP, the idea is that we allocate | |
538 | * a temporary buffer and the pre_load/pre_save methods in the child vmsd | |
539 | * copy stuff from the parent into the child and do calculations to fill | |
540 | * in fields that don't really exist in the parent but need to be in the | |
541 | * stream. | |
542 | */ | |
03fee66f MAL |
543 | static int get_tmp(QEMUFile *f, void *pv, size_t size, |
544 | const VMStateField *field) | |
576d1abc JQ |
545 | { |
546 | int ret; | |
547 | const VMStateDescription *vmsd = field->vmsd; | |
548 | int version_id = field->version_id; | |
549 | void *tmp = g_malloc(size); | |
550 | ||
551 | /* Writes the parent field which is at the start of the tmp */ | |
552 | *(void **)tmp = pv; | |
553 | ret = vmstate_load_state(f, vmsd, tmp, version_id); | |
554 | g_free(tmp); | |
555 | return ret; | |
556 | } | |
557 | ||
03fee66f MAL |
558 | static int put_tmp(QEMUFile *f, void *pv, size_t size, |
559 | const VMStateField *field, QJSON *vmdesc) | |
576d1abc JQ |
560 | { |
561 | const VMStateDescription *vmsd = field->vmsd; | |
562 | void *tmp = g_malloc(size); | |
2f168d07 | 563 | int ret; |
576d1abc JQ |
564 | |
565 | /* Writes the parent field which is at the start of the tmp */ | |
566 | *(void **)tmp = pv; | |
2f168d07 | 567 | ret = vmstate_save_state(f, vmsd, tmp, vmdesc); |
576d1abc JQ |
568 | g_free(tmp); |
569 | ||
2f168d07 | 570 | return ret; |
576d1abc JQ |
571 | } |
572 | ||
573 | const VMStateInfo vmstate_info_tmp = { | |
574 | .name = "tmp", | |
575 | .get = get_tmp, | |
576 | .put = put_tmp, | |
577 | }; | |
578 | ||
579 | /* bitmaps (as defined by bitmap.h). Note that size here is the size | |
580 | * of the bitmap in bits. The on-the-wire format of a bitmap is 64 | |
581 | * bit words with the bits in big endian order. The in-memory format | |
582 | * is an array of 'unsigned long', which may be either 32 or 64 bits. | |
583 | */ | |
584 | /* This is the number of 64 bit words sent over the wire */ | |
585 | #define BITS_TO_U64S(nr) DIV_ROUND_UP(nr, 64) | |
03fee66f MAL |
586 | static int get_bitmap(QEMUFile *f, void *pv, size_t size, |
587 | const VMStateField *field) | |
576d1abc JQ |
588 | { |
589 | unsigned long *bmp = pv; | |
590 | int i, idx = 0; | |
591 | for (i = 0; i < BITS_TO_U64S(size); i++) { | |
592 | uint64_t w = qemu_get_be64(f); | |
593 | bmp[idx++] = w; | |
594 | if (sizeof(unsigned long) == 4 && idx < BITS_TO_LONGS(size)) { | |
595 | bmp[idx++] = w >> 32; | |
596 | } | |
597 | } | |
598 | return 0; | |
599 | } | |
600 | ||
03fee66f MAL |
601 | static int put_bitmap(QEMUFile *f, void *pv, size_t size, |
602 | const VMStateField *field, QJSON *vmdesc) | |
576d1abc JQ |
603 | { |
604 | unsigned long *bmp = pv; | |
605 | int i, idx = 0; | |
606 | for (i = 0; i < BITS_TO_U64S(size); i++) { | |
607 | uint64_t w = bmp[idx++]; | |
608 | if (sizeof(unsigned long) == 4 && idx < BITS_TO_LONGS(size)) { | |
609 | w |= ((uint64_t)bmp[idx++]) << 32; | |
610 | } | |
611 | qemu_put_be64(f, w); | |
612 | } | |
613 | ||
614 | return 0; | |
615 | } | |
616 | ||
617 | const VMStateInfo vmstate_info_bitmap = { | |
618 | .name = "bitmap", | |
619 | .get = get_bitmap, | |
620 | .put = put_bitmap, | |
621 | }; | |
622 | ||
623 | /* get for QTAILQ | |
624 | * meta data about the QTAILQ is encoded in a VMStateField structure | |
625 | */ | |
626 | static int get_qtailq(QEMUFile *f, void *pv, size_t unused_size, | |
03fee66f | 627 | const VMStateField *field) |
576d1abc JQ |
628 | { |
629 | int ret = 0; | |
630 | const VMStateDescription *vmsd = field->vmsd; | |
631 | /* size of a QTAILQ element */ | |
632 | size_t size = field->size; | |
633 | /* offset of the QTAILQ entry in a QTAILQ element */ | |
634 | size_t entry_offset = field->start; | |
635 | int version_id = field->version_id; | |
636 | void *elm; | |
637 | ||
638 | trace_get_qtailq(vmsd->name, version_id); | |
639 | if (version_id > vmsd->version_id) { | |
640 | error_report("%s %s", vmsd->name, "too new"); | |
641 | trace_get_qtailq_end(vmsd->name, "too new", -EINVAL); | |
642 | ||
643 | return -EINVAL; | |
644 | } | |
645 | if (version_id < vmsd->minimum_version_id) { | |
646 | error_report("%s %s", vmsd->name, "too old"); | |
647 | trace_get_qtailq_end(vmsd->name, "too old", -EINVAL); | |
648 | return -EINVAL; | |
649 | } | |
650 | ||
651 | while (qemu_get_byte(f)) { | |
652 | elm = g_malloc(size); | |
653 | ret = vmstate_load_state(f, vmsd, elm, version_id); | |
654 | if (ret) { | |
655 | return ret; | |
656 | } | |
657 | QTAILQ_RAW_INSERT_TAIL(pv, elm, entry_offset); | |
658 | } | |
659 | ||
660 | trace_get_qtailq_end(vmsd->name, "end", ret); | |
661 | return ret; | |
662 | } | |
663 | ||
664 | /* put for QTAILQ */ | |
665 | static int put_qtailq(QEMUFile *f, void *pv, size_t unused_size, | |
03fee66f | 666 | const VMStateField *field, QJSON *vmdesc) |
576d1abc JQ |
667 | { |
668 | const VMStateDescription *vmsd = field->vmsd; | |
669 | /* offset of the QTAILQ entry in a QTAILQ element*/ | |
670 | size_t entry_offset = field->start; | |
671 | void *elm; | |
2f168d07 | 672 | int ret; |
576d1abc JQ |
673 | |
674 | trace_put_qtailq(vmsd->name, vmsd->version_id); | |
675 | ||
676 | QTAILQ_RAW_FOREACH(elm, pv, entry_offset) { | |
677 | qemu_put_byte(f, true); | |
2f168d07 DDAG |
678 | ret = vmstate_save_state(f, vmsd, elm, vmdesc); |
679 | if (ret) { | |
680 | return ret; | |
681 | } | |
576d1abc JQ |
682 | } |
683 | qemu_put_byte(f, false); | |
684 | ||
685 | trace_put_qtailq_end(vmsd->name, "end"); | |
686 | ||
687 | return 0; | |
688 | } | |
689 | const VMStateInfo vmstate_info_qtailq = { | |
690 | .name = "qtailq", | |
691 | .get = get_qtailq, | |
692 | .put = put_qtailq, | |
693 | }; | |
9a85e4b8 EA |
694 | |
695 | struct put_gtree_data { | |
696 | QEMUFile *f; | |
697 | const VMStateDescription *key_vmsd; | |
698 | const VMStateDescription *val_vmsd; | |
699 | QJSON *vmdesc; | |
700 | int ret; | |
701 | }; | |
702 | ||
703 | static gboolean put_gtree_elem(gpointer key, gpointer value, gpointer data) | |
704 | { | |
705 | struct put_gtree_data *capsule = (struct put_gtree_data *)data; | |
706 | QEMUFile *f = capsule->f; | |
707 | int ret; | |
708 | ||
709 | qemu_put_byte(f, true); | |
710 | ||
711 | /* put the key */ | |
712 | if (!capsule->key_vmsd) { | |
713 | qemu_put_be64(f, (uint64_t)(uintptr_t)(key)); /* direct key */ | |
714 | } else { | |
715 | ret = vmstate_save_state(f, capsule->key_vmsd, key, capsule->vmdesc); | |
716 | if (ret) { | |
717 | capsule->ret = ret; | |
718 | return true; | |
719 | } | |
720 | } | |
721 | ||
722 | /* put the data */ | |
723 | ret = vmstate_save_state(f, capsule->val_vmsd, value, capsule->vmdesc); | |
724 | if (ret) { | |
725 | capsule->ret = ret; | |
726 | return true; | |
727 | } | |
728 | return false; | |
729 | } | |
730 | ||
731 | static int put_gtree(QEMUFile *f, void *pv, size_t unused_size, | |
732 | const VMStateField *field, QJSON *vmdesc) | |
733 | { | |
734 | bool direct_key = (!field->start); | |
735 | const VMStateDescription *key_vmsd = direct_key ? NULL : &field->vmsd[1]; | |
736 | const VMStateDescription *val_vmsd = &field->vmsd[0]; | |
737 | const char *key_vmsd_name = direct_key ? "direct" : key_vmsd->name; | |
738 | struct put_gtree_data capsule = { | |
739 | .f = f, | |
740 | .key_vmsd = key_vmsd, | |
741 | .val_vmsd = val_vmsd, | |
742 | .vmdesc = vmdesc, | |
743 | .ret = 0}; | |
744 | GTree **pval = pv; | |
745 | GTree *tree = *pval; | |
746 | uint32_t nnodes = g_tree_nnodes(tree); | |
747 | int ret; | |
748 | ||
749 | trace_put_gtree(field->name, key_vmsd_name, val_vmsd->name, nnodes); | |
750 | qemu_put_be32(f, nnodes); | |
751 | g_tree_foreach(tree, put_gtree_elem, (gpointer)&capsule); | |
752 | qemu_put_byte(f, false); | |
753 | ret = capsule.ret; | |
754 | if (ret) { | |
755 | error_report("%s : failed to save gtree (%d)", field->name, ret); | |
756 | } | |
757 | trace_put_gtree_end(field->name, key_vmsd_name, val_vmsd->name, ret); | |
758 | return ret; | |
759 | } | |
760 | ||
761 | static int get_gtree(QEMUFile *f, void *pv, size_t unused_size, | |
762 | const VMStateField *field) | |
763 | { | |
764 | bool direct_key = (!field->start); | |
765 | const VMStateDescription *key_vmsd = direct_key ? NULL : &field->vmsd[1]; | |
766 | const VMStateDescription *val_vmsd = &field->vmsd[0]; | |
767 | const char *key_vmsd_name = direct_key ? "direct" : key_vmsd->name; | |
768 | int version_id = field->version_id; | |
769 | size_t key_size = field->start; | |
770 | size_t val_size = field->size; | |
771 | int nnodes, count = 0; | |
772 | GTree **pval = pv; | |
773 | GTree *tree = *pval; | |
774 | void *key, *val; | |
775 | int ret = 0; | |
776 | ||
777 | /* in case of direct key, the key vmsd can be {}, ie. check fields */ | |
778 | if (!direct_key && version_id > key_vmsd->version_id) { | |
779 | error_report("%s %s", key_vmsd->name, "too new"); | |
780 | return -EINVAL; | |
781 | } | |
782 | if (!direct_key && version_id < key_vmsd->minimum_version_id) { | |
783 | error_report("%s %s", key_vmsd->name, "too old"); | |
784 | return -EINVAL; | |
785 | } | |
786 | if (version_id > val_vmsd->version_id) { | |
787 | error_report("%s %s", val_vmsd->name, "too new"); | |
788 | return -EINVAL; | |
789 | } | |
790 | if (version_id < val_vmsd->minimum_version_id) { | |
791 | error_report("%s %s", val_vmsd->name, "too old"); | |
792 | return -EINVAL; | |
793 | } | |
794 | ||
795 | nnodes = qemu_get_be32(f); | |
796 | trace_get_gtree(field->name, key_vmsd_name, val_vmsd->name, nnodes); | |
797 | ||
798 | while (qemu_get_byte(f)) { | |
799 | if ((++count) > nnodes) { | |
800 | ret = -EINVAL; | |
801 | break; | |
802 | } | |
803 | if (direct_key) { | |
804 | key = (void *)(uintptr_t)qemu_get_be64(f); | |
805 | } else { | |
806 | key = g_malloc0(key_size); | |
807 | ret = vmstate_load_state(f, key_vmsd, key, version_id); | |
808 | if (ret) { | |
809 | error_report("%s : failed to load %s (%d)", | |
810 | field->name, key_vmsd->name, ret); | |
811 | goto key_error; | |
812 | } | |
813 | } | |
814 | val = g_malloc0(val_size); | |
815 | ret = vmstate_load_state(f, val_vmsd, val, version_id); | |
816 | if (ret) { | |
817 | error_report("%s : failed to load %s (%d)", | |
818 | field->name, val_vmsd->name, ret); | |
819 | goto val_error; | |
820 | } | |
821 | g_tree_insert(tree, key, val); | |
822 | } | |
823 | if (count != nnodes) { | |
824 | error_report("%s inconsistent stream when loading the gtree", | |
825 | field->name); | |
826 | return -EINVAL; | |
827 | } | |
828 | trace_get_gtree_end(field->name, key_vmsd_name, val_vmsd->name, ret); | |
829 | return ret; | |
830 | val_error: | |
831 | g_free(val); | |
832 | key_error: | |
833 | if (!direct_key) { | |
834 | g_free(key); | |
835 | } | |
836 | trace_get_gtree_end(field->name, key_vmsd_name, val_vmsd->name, ret); | |
837 | return ret; | |
838 | } | |
839 | ||
840 | ||
841 | const VMStateInfo vmstate_info_gtree = { | |
842 | .name = "gtree", | |
843 | .get = get_gtree, | |
844 | .put = put_gtree, | |
845 | }; |