sparc32-ledma: use object_initialize_child() for lance child object
[qemu.git] / migration / vmstate-types.c
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"
14 #include "qemu-file.h"
15 #include "migration.h"
16 #include "migration/vmstate.h"
17 #include "qemu/error-report.h"
18 #include "qemu/queue.h"
19 #include "trace.h"
20
21 /* bool */
22
23 static int get_bool(QEMUFile *f, void *pv, size_t size,
24 const VMStateField *field)
25 {
26 bool *v = pv;
27 *v = qemu_get_byte(f);
28 return 0;
29 }
30
31 static int put_bool(QEMUFile *f, void *pv, size_t size,
32 const VMStateField *field, QJSON *vmdesc)
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
47 static int get_int8(QEMUFile *f, void *pv, size_t size,
48 const VMStateField *field)
49 {
50 int8_t *v = pv;
51 qemu_get_s8s(f, v);
52 return 0;
53 }
54
55 static int put_int8(QEMUFile *f, void *pv, size_t size,
56 const VMStateField *field, QJSON *vmdesc)
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
71 static int get_int16(QEMUFile *f, void *pv, size_t size,
72 const VMStateField *field)
73 {
74 int16_t *v = pv;
75 qemu_get_sbe16s(f, v);
76 return 0;
77 }
78
79 static int put_int16(QEMUFile *f, void *pv, size_t size,
80 const VMStateField *field, QJSON *vmdesc)
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
95 static int get_int32(QEMUFile *f, void *pv, size_t size,
96 const VMStateField *field)
97 {
98 int32_t *v = pv;
99 qemu_get_sbe32s(f, v);
100 return 0;
101 }
102
103 static int put_int32(QEMUFile *f, void *pv, size_t size,
104 const VMStateField *field, QJSON *vmdesc)
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,
121 const VMStateField *field)
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);
131 if (field->err_hint) {
132 error_printf("%s\n", field->err_hint);
133 }
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
147 static int get_int32_le(QEMUFile *f, void *pv, size_t size,
148 const VMStateField *field)
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
172 static int get_int64(QEMUFile *f, void *pv, size_t size,
173 const VMStateField *field)
174 {
175 int64_t *v = pv;
176 qemu_get_sbe64s(f, v);
177 return 0;
178 }
179
180 static int put_int64(QEMUFile *f, void *pv, size_t size,
181 const VMStateField *field, QJSON *vmdesc)
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
196 static int get_uint8(QEMUFile *f, void *pv, size_t size,
197 const VMStateField *field)
198 {
199 uint8_t *v = pv;
200 qemu_get_8s(f, v);
201 return 0;
202 }
203
204 static int put_uint8(QEMUFile *f, void *pv, size_t size,
205 const VMStateField *field, QJSON *vmdesc)
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
220 static int get_uint16(QEMUFile *f, void *pv, size_t size,
221 const VMStateField *field)
222 {
223 uint16_t *v = pv;
224 qemu_get_be16s(f, v);
225 return 0;
226 }
227
228 static int put_uint16(QEMUFile *f, void *pv, size_t size,
229 const VMStateField *field, QJSON *vmdesc)
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
244 static int get_uint32(QEMUFile *f, void *pv, size_t size,
245 const VMStateField *field)
246 {
247 uint32_t *v = pv;
248 qemu_get_be32s(f, v);
249 return 0;
250 }
251
252 static int put_uint32(QEMUFile *f, void *pv, size_t size,
253 const VMStateField *field, QJSON *vmdesc)
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,
270 const VMStateField *field)
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);
280 if (field->err_hint) {
281 error_printf("%s\n", field->err_hint);
282 }
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
294 static int get_uint64(QEMUFile *f, void *pv, size_t size,
295 const VMStateField *field)
296 {
297 uint64_t *v = pv;
298 qemu_get_be64s(f, v);
299 return 0;
300 }
301
302 static int put_uint64(QEMUFile *f, void *pv, size_t size,
303 const VMStateField *field, QJSON *vmdesc)
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
316 static int get_nullptr(QEMUFile *f, void *pv, size_t size,
317 const VMStateField *field)
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,
328 const VMStateField *field, QJSON *vmdesc)
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,
349 const VMStateField *field)
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);
359 if (field->err_hint) {
360 error_printf("%s\n", field->err_hint);
361 }
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,
375 const VMStateField *field)
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);
385 if (field->err_hint) {
386 error_printf("%s\n", field->err_hint);
387 }
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,
401 const VMStateField *field)
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);
411 if (field->err_hint) {
412 error_printf("%s\n", field->err_hint);
413 }
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 /* CPU_DoubleU type */
424
425 static int get_cpudouble(QEMUFile *f, void *pv, size_t size,
426 const VMStateField *field)
427 {
428 CPU_DoubleU *v = pv;
429 qemu_get_be32s(f, &v->l.upper);
430 qemu_get_be32s(f, &v->l.lower);
431 return 0;
432 }
433
434 static int put_cpudouble(QEMUFile *f, void *pv, size_t size,
435 const VMStateField *field, QJSON *vmdesc)
436 {
437 CPU_DoubleU *v = pv;
438 qemu_put_be32s(f, &v->l.upper);
439 qemu_put_be32s(f, &v->l.lower);
440 return 0;
441 }
442
443 const VMStateInfo vmstate_info_cpudouble = {
444 .name = "CPU_Double_U",
445 .get = get_cpudouble,
446 .put = put_cpudouble,
447 };
448
449 /* uint8_t buffers */
450
451 static int get_buffer(QEMUFile *f, void *pv, size_t size,
452 const VMStateField *field)
453 {
454 uint8_t *v = pv;
455 qemu_get_buffer(f, v, size);
456 return 0;
457 }
458
459 static int put_buffer(QEMUFile *f, void *pv, size_t size,
460 const VMStateField *field, QJSON *vmdesc)
461 {
462 uint8_t *v = pv;
463 qemu_put_buffer(f, v, size);
464 return 0;
465 }
466
467 const VMStateInfo vmstate_info_buffer = {
468 .name = "buffer",
469 .get = get_buffer,
470 .put = put_buffer,
471 };
472
473 /* unused buffers: space that was used for some fields that are
474 not useful anymore */
475
476 static int get_unused_buffer(QEMUFile *f, void *pv, size_t size,
477 const VMStateField *field)
478 {
479 uint8_t buf[1024];
480 int block_len;
481
482 while (size > 0) {
483 block_len = MIN(sizeof(buf), size);
484 size -= block_len;
485 qemu_get_buffer(f, buf, block_len);
486 }
487 return 0;
488 }
489
490 static int put_unused_buffer(QEMUFile *f, void *pv, size_t size,
491 const VMStateField *field, QJSON *vmdesc)
492 {
493 static const uint8_t buf[1024];
494 int block_len;
495
496 while (size > 0) {
497 block_len = MIN(sizeof(buf), size);
498 size -= block_len;
499 qemu_put_buffer(f, buf, block_len);
500 }
501
502 return 0;
503 }
504
505 const VMStateInfo vmstate_info_unused_buffer = {
506 .name = "unused_buffer",
507 .get = get_unused_buffer,
508 .put = put_unused_buffer,
509 };
510
511 /* vmstate_info_tmp, see VMSTATE_WITH_TMP, the idea is that we allocate
512 * a temporary buffer and the pre_load/pre_save methods in the child vmsd
513 * copy stuff from the parent into the child and do calculations to fill
514 * in fields that don't really exist in the parent but need to be in the
515 * stream.
516 */
517 static int get_tmp(QEMUFile *f, void *pv, size_t size,
518 const VMStateField *field)
519 {
520 int ret;
521 const VMStateDescription *vmsd = field->vmsd;
522 int version_id = field->version_id;
523 void *tmp = g_malloc(size);
524
525 /* Writes the parent field which is at the start of the tmp */
526 *(void **)tmp = pv;
527 ret = vmstate_load_state(f, vmsd, tmp, version_id);
528 g_free(tmp);
529 return ret;
530 }
531
532 static int put_tmp(QEMUFile *f, void *pv, size_t size,
533 const VMStateField *field, QJSON *vmdesc)
534 {
535 const VMStateDescription *vmsd = field->vmsd;
536 void *tmp = g_malloc(size);
537 int ret;
538
539 /* Writes the parent field which is at the start of the tmp */
540 *(void **)tmp = pv;
541 ret = vmstate_save_state(f, vmsd, tmp, vmdesc);
542 g_free(tmp);
543
544 return ret;
545 }
546
547 const VMStateInfo vmstate_info_tmp = {
548 .name = "tmp",
549 .get = get_tmp,
550 .put = put_tmp,
551 };
552
553 /* bitmaps (as defined by bitmap.h). Note that size here is the size
554 * of the bitmap in bits. The on-the-wire format of a bitmap is 64
555 * bit words with the bits in big endian order. The in-memory format
556 * is an array of 'unsigned long', which may be either 32 or 64 bits.
557 */
558 /* This is the number of 64 bit words sent over the wire */
559 #define BITS_TO_U64S(nr) DIV_ROUND_UP(nr, 64)
560 static int get_bitmap(QEMUFile *f, void *pv, size_t size,
561 const VMStateField *field)
562 {
563 unsigned long *bmp = pv;
564 int i, idx = 0;
565 for (i = 0; i < BITS_TO_U64S(size); i++) {
566 uint64_t w = qemu_get_be64(f);
567 bmp[idx++] = w;
568 if (sizeof(unsigned long) == 4 && idx < BITS_TO_LONGS(size)) {
569 bmp[idx++] = w >> 32;
570 }
571 }
572 return 0;
573 }
574
575 static int put_bitmap(QEMUFile *f, void *pv, size_t size,
576 const VMStateField *field, QJSON *vmdesc)
577 {
578 unsigned long *bmp = pv;
579 int i, idx = 0;
580 for (i = 0; i < BITS_TO_U64S(size); i++) {
581 uint64_t w = bmp[idx++];
582 if (sizeof(unsigned long) == 4 && idx < BITS_TO_LONGS(size)) {
583 w |= ((uint64_t)bmp[idx++]) << 32;
584 }
585 qemu_put_be64(f, w);
586 }
587
588 return 0;
589 }
590
591 const VMStateInfo vmstate_info_bitmap = {
592 .name = "bitmap",
593 .get = get_bitmap,
594 .put = put_bitmap,
595 };
596
597 /* get for QTAILQ
598 * meta data about the QTAILQ is encoded in a VMStateField structure
599 */
600 static int get_qtailq(QEMUFile *f, void *pv, size_t unused_size,
601 const VMStateField *field)
602 {
603 int ret = 0;
604 const VMStateDescription *vmsd = field->vmsd;
605 /* size of a QTAILQ element */
606 size_t size = field->size;
607 /* offset of the QTAILQ entry in a QTAILQ element */
608 size_t entry_offset = field->start;
609 int version_id = field->version_id;
610 void *elm;
611
612 trace_get_qtailq(vmsd->name, version_id);
613 if (version_id > vmsd->version_id) {
614 error_report("%s %s", vmsd->name, "too new");
615 trace_get_qtailq_end(vmsd->name, "too new", -EINVAL);
616
617 return -EINVAL;
618 }
619 if (version_id < vmsd->minimum_version_id) {
620 error_report("%s %s", vmsd->name, "too old");
621 trace_get_qtailq_end(vmsd->name, "too old", -EINVAL);
622 return -EINVAL;
623 }
624
625 while (qemu_get_byte(f)) {
626 elm = g_malloc(size);
627 ret = vmstate_load_state(f, vmsd, elm, version_id);
628 if (ret) {
629 return ret;
630 }
631 QTAILQ_RAW_INSERT_TAIL(pv, elm, entry_offset);
632 }
633
634 trace_get_qtailq_end(vmsd->name, "end", ret);
635 return ret;
636 }
637
638 /* put for QTAILQ */
639 static int put_qtailq(QEMUFile *f, void *pv, size_t unused_size,
640 const VMStateField *field, QJSON *vmdesc)
641 {
642 const VMStateDescription *vmsd = field->vmsd;
643 /* offset of the QTAILQ entry in a QTAILQ element*/
644 size_t entry_offset = field->start;
645 void *elm;
646 int ret;
647
648 trace_put_qtailq(vmsd->name, vmsd->version_id);
649
650 QTAILQ_RAW_FOREACH(elm, pv, entry_offset) {
651 qemu_put_byte(f, true);
652 ret = vmstate_save_state(f, vmsd, elm, vmdesc);
653 if (ret) {
654 return ret;
655 }
656 }
657 qemu_put_byte(f, false);
658
659 trace_put_qtailq_end(vmsd->name, "end");
660
661 return 0;
662 }
663 const VMStateInfo vmstate_info_qtailq = {
664 .name = "qtailq",
665 .get = get_qtailq,
666 .put = put_qtailq,
667 };
668
669 struct put_gtree_data {
670 QEMUFile *f;
671 const VMStateDescription *key_vmsd;
672 const VMStateDescription *val_vmsd;
673 QJSON *vmdesc;
674 int ret;
675 };
676
677 static gboolean put_gtree_elem(gpointer key, gpointer value, gpointer data)
678 {
679 struct put_gtree_data *capsule = (struct put_gtree_data *)data;
680 QEMUFile *f = capsule->f;
681 int ret;
682
683 qemu_put_byte(f, true);
684
685 /* put the key */
686 if (!capsule->key_vmsd) {
687 qemu_put_be64(f, (uint64_t)(uintptr_t)(key)); /* direct key */
688 } else {
689 ret = vmstate_save_state(f, capsule->key_vmsd, key, capsule->vmdesc);
690 if (ret) {
691 capsule->ret = ret;
692 return true;
693 }
694 }
695
696 /* put the data */
697 ret = vmstate_save_state(f, capsule->val_vmsd, value, capsule->vmdesc);
698 if (ret) {
699 capsule->ret = ret;
700 return true;
701 }
702 return false;
703 }
704
705 static int put_gtree(QEMUFile *f, void *pv, size_t unused_size,
706 const VMStateField *field, QJSON *vmdesc)
707 {
708 bool direct_key = (!field->start);
709 const VMStateDescription *key_vmsd = direct_key ? NULL : &field->vmsd[1];
710 const VMStateDescription *val_vmsd = &field->vmsd[0];
711 const char *key_vmsd_name = direct_key ? "direct" : key_vmsd->name;
712 struct put_gtree_data capsule = {
713 .f = f,
714 .key_vmsd = key_vmsd,
715 .val_vmsd = val_vmsd,
716 .vmdesc = vmdesc,
717 .ret = 0};
718 GTree **pval = pv;
719 GTree *tree = *pval;
720 uint32_t nnodes = g_tree_nnodes(tree);
721 int ret;
722
723 trace_put_gtree(field->name, key_vmsd_name, val_vmsd->name, nnodes);
724 qemu_put_be32(f, nnodes);
725 g_tree_foreach(tree, put_gtree_elem, (gpointer)&capsule);
726 qemu_put_byte(f, false);
727 ret = capsule.ret;
728 if (ret) {
729 error_report("%s : failed to save gtree (%d)", field->name, ret);
730 }
731 trace_put_gtree_end(field->name, key_vmsd_name, val_vmsd->name, ret);
732 return ret;
733 }
734
735 static int get_gtree(QEMUFile *f, void *pv, size_t unused_size,
736 const VMStateField *field)
737 {
738 bool direct_key = (!field->start);
739 const VMStateDescription *key_vmsd = direct_key ? NULL : &field->vmsd[1];
740 const VMStateDescription *val_vmsd = &field->vmsd[0];
741 const char *key_vmsd_name = direct_key ? "direct" : key_vmsd->name;
742 int version_id = field->version_id;
743 size_t key_size = field->start;
744 size_t val_size = field->size;
745 int nnodes, count = 0;
746 GTree **pval = pv;
747 GTree *tree = *pval;
748 void *key, *val;
749 int ret = 0;
750
751 /* in case of direct key, the key vmsd can be {}, ie. check fields */
752 if (!direct_key && version_id > key_vmsd->version_id) {
753 error_report("%s %s", key_vmsd->name, "too new");
754 return -EINVAL;
755 }
756 if (!direct_key && version_id < key_vmsd->minimum_version_id) {
757 error_report("%s %s", key_vmsd->name, "too old");
758 return -EINVAL;
759 }
760 if (version_id > val_vmsd->version_id) {
761 error_report("%s %s", val_vmsd->name, "too new");
762 return -EINVAL;
763 }
764 if (version_id < val_vmsd->minimum_version_id) {
765 error_report("%s %s", val_vmsd->name, "too old");
766 return -EINVAL;
767 }
768
769 nnodes = qemu_get_be32(f);
770 trace_get_gtree(field->name, key_vmsd_name, val_vmsd->name, nnodes);
771
772 while (qemu_get_byte(f)) {
773 if ((++count) > nnodes) {
774 ret = -EINVAL;
775 break;
776 }
777 if (direct_key) {
778 key = (void *)(uintptr_t)qemu_get_be64(f);
779 } else {
780 key = g_malloc0(key_size);
781 ret = vmstate_load_state(f, key_vmsd, key, version_id);
782 if (ret) {
783 error_report("%s : failed to load %s (%d)",
784 field->name, key_vmsd->name, ret);
785 goto key_error;
786 }
787 }
788 val = g_malloc0(val_size);
789 ret = vmstate_load_state(f, val_vmsd, val, version_id);
790 if (ret) {
791 error_report("%s : failed to load %s (%d)",
792 field->name, val_vmsd->name, ret);
793 goto val_error;
794 }
795 g_tree_insert(tree, key, val);
796 }
797 if (count != nnodes) {
798 error_report("%s inconsistent stream when loading the gtree",
799 field->name);
800 return -EINVAL;
801 }
802 trace_get_gtree_end(field->name, key_vmsd_name, val_vmsd->name, ret);
803 return ret;
804 val_error:
805 g_free(val);
806 key_error:
807 if (!direct_key) {
808 g_free(key);
809 }
810 trace_get_gtree_end(field->name, key_vmsd_name, val_vmsd->name, ret);
811 return ret;
812 }
813
814
815 const VMStateInfo vmstate_info_gtree = {
816 .name = "gtree",
817 .get = get_gtree,
818 .put = put_gtree,
819 };
820
821 static int put_qlist(QEMUFile *f, void *pv, size_t unused_size,
822 const VMStateField *field, QJSON *vmdesc)
823 {
824 const VMStateDescription *vmsd = field->vmsd;
825 /* offset of the QTAILQ entry in a QTAILQ element*/
826 size_t entry_offset = field->start;
827 void *elm;
828 int ret;
829
830 trace_put_qlist(field->name, vmsd->name, vmsd->version_id);
831 QLIST_RAW_FOREACH(elm, pv, entry_offset) {
832 qemu_put_byte(f, true);
833 ret = vmstate_save_state(f, vmsd, elm, vmdesc);
834 if (ret) {
835 error_report("%s: failed to save %s (%d)", field->name,
836 vmsd->name, ret);
837 return ret;
838 }
839 }
840 qemu_put_byte(f, false);
841 trace_put_qlist_end(field->name, vmsd->name);
842
843 return 0;
844 }
845
846 static int get_qlist(QEMUFile *f, void *pv, size_t unused_size,
847 const VMStateField *field)
848 {
849 int ret = 0;
850 const VMStateDescription *vmsd = field->vmsd;
851 /* size of a QLIST element */
852 size_t size = field->size;
853 /* offset of the QLIST entry in a QLIST element */
854 size_t entry_offset = field->start;
855 int version_id = field->version_id;
856 void *elm, *prev = NULL;
857
858 trace_get_qlist(field->name, vmsd->name, vmsd->version_id);
859 if (version_id > vmsd->version_id) {
860 error_report("%s %s", vmsd->name, "too new");
861 return -EINVAL;
862 }
863 if (version_id < vmsd->minimum_version_id) {
864 error_report("%s %s", vmsd->name, "too old");
865 return -EINVAL;
866 }
867
868 while (qemu_get_byte(f)) {
869 elm = g_malloc(size);
870 ret = vmstate_load_state(f, vmsd, elm, version_id);
871 if (ret) {
872 error_report("%s: failed to load %s (%d)", field->name,
873 vmsd->name, ret);
874 g_free(elm);
875 return ret;
876 }
877 if (!prev) {
878 QLIST_RAW_INSERT_HEAD(pv, elm, entry_offset);
879 } else {
880 QLIST_RAW_INSERT_AFTER(pv, prev, elm, entry_offset);
881 }
882 prev = elm;
883 }
884 trace_get_qlist_end(field->name, vmsd->name);
885
886 return ret;
887 }
888
889 const VMStateInfo vmstate_info_qlist = {
890 .name = "qlist",
891 .get = get_qlist,
892 .put = put_qlist,
893 };