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Commit | Line | Data |
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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" | |
69242e7e | 14 | #include "qemu/cpu-float.h" |
08a0aee1 | 15 | #include "qemu-file.h" |
6666c96a | 16 | #include "migration.h" |
576d1abc JQ |
17 | #include "migration/vmstate.h" |
18 | #include "qemu/error-report.h" | |
19 | #include "qemu/queue.h" | |
20 | #include "trace.h" | |
21 | ||
22 | /* bool */ | |
23 | ||
03fee66f MAL |
24 | static int get_bool(QEMUFile *f, void *pv, size_t size, |
25 | const VMStateField *field) | |
576d1abc JQ |
26 | { |
27 | bool *v = pv; | |
28 | *v = qemu_get_byte(f); | |
29 | return 0; | |
30 | } | |
31 | ||
03fee66f | 32 | static int put_bool(QEMUFile *f, void *pv, size_t size, |
3ddba9a9 | 33 | const VMStateField *field, JSONWriter *vmdesc) |
576d1abc JQ |
34 | { |
35 | bool *v = pv; | |
36 | qemu_put_byte(f, *v); | |
37 | return 0; | |
38 | } | |
39 | ||
40 | const VMStateInfo vmstate_info_bool = { | |
41 | .name = "bool", | |
42 | .get = get_bool, | |
43 | .put = put_bool, | |
44 | }; | |
45 | ||
46 | /* 8 bit int */ | |
47 | ||
03fee66f MAL |
48 | static int get_int8(QEMUFile *f, void *pv, size_t size, |
49 | const VMStateField *field) | |
576d1abc JQ |
50 | { |
51 | int8_t *v = pv; | |
52 | qemu_get_s8s(f, v); | |
53 | return 0; | |
54 | } | |
55 | ||
03fee66f | 56 | static int put_int8(QEMUFile *f, void *pv, size_t size, |
3ddba9a9 | 57 | const VMStateField *field, JSONWriter *vmdesc) |
576d1abc JQ |
58 | { |
59 | int8_t *v = pv; | |
60 | qemu_put_s8s(f, v); | |
61 | return 0; | |
62 | } | |
63 | ||
64 | const VMStateInfo vmstate_info_int8 = { | |
65 | .name = "int8", | |
66 | .get = get_int8, | |
67 | .put = put_int8, | |
68 | }; | |
69 | ||
70 | /* 16 bit int */ | |
71 | ||
03fee66f MAL |
72 | static int get_int16(QEMUFile *f, void *pv, size_t size, |
73 | const VMStateField *field) | |
576d1abc JQ |
74 | { |
75 | int16_t *v = pv; | |
76 | qemu_get_sbe16s(f, v); | |
77 | return 0; | |
78 | } | |
79 | ||
03fee66f | 80 | static int put_int16(QEMUFile *f, void *pv, size_t size, |
3ddba9a9 | 81 | const VMStateField *field, JSONWriter *vmdesc) |
576d1abc JQ |
82 | { |
83 | int16_t *v = pv; | |
84 | qemu_put_sbe16s(f, v); | |
85 | return 0; | |
86 | } | |
87 | ||
88 | const VMStateInfo vmstate_info_int16 = { | |
89 | .name = "int16", | |
90 | .get = get_int16, | |
91 | .put = put_int16, | |
92 | }; | |
93 | ||
94 | /* 32 bit int */ | |
95 | ||
03fee66f MAL |
96 | static int get_int32(QEMUFile *f, void *pv, size_t size, |
97 | const VMStateField *field) | |
576d1abc JQ |
98 | { |
99 | int32_t *v = pv; | |
100 | qemu_get_sbe32s(f, v); | |
101 | return 0; | |
102 | } | |
103 | ||
03fee66f | 104 | static int put_int32(QEMUFile *f, void *pv, size_t size, |
3ddba9a9 | 105 | const VMStateField *field, JSONWriter *vmdesc) |
576d1abc JQ |
106 | { |
107 | int32_t *v = pv; | |
108 | qemu_put_sbe32s(f, v); | |
109 | return 0; | |
110 | } | |
111 | ||
112 | const VMStateInfo vmstate_info_int32 = { | |
113 | .name = "int32", | |
114 | .get = get_int32, | |
115 | .put = put_int32, | |
116 | }; | |
117 | ||
118 | /* 32 bit int. See that the received value is the same than the one | |
119 | in the field */ | |
120 | ||
121 | static int get_int32_equal(QEMUFile *f, void *pv, size_t size, | |
03fee66f | 122 | const VMStateField *field) |
576d1abc JQ |
123 | { |
124 | int32_t *v = pv; | |
125 | int32_t v2; | |
126 | qemu_get_sbe32s(f, &v2); | |
127 | ||
128 | if (*v == v2) { | |
129 | return 0; | |
130 | } | |
131 | error_report("%" PRIx32 " != %" PRIx32, *v, v2); | |
d2164ad3 HP |
132 | if (field->err_hint) { |
133 | error_printf("%s\n", field->err_hint); | |
134 | } | |
576d1abc JQ |
135 | return -EINVAL; |
136 | } | |
137 | ||
138 | const VMStateInfo vmstate_info_int32_equal = { | |
139 | .name = "int32 equal", | |
140 | .get = get_int32_equal, | |
141 | .put = put_int32, | |
142 | }; | |
143 | ||
144 | /* 32 bit int. Check that the received value is non-negative | |
145 | * and less than or equal to the one in the field. | |
146 | */ | |
147 | ||
03fee66f MAL |
148 | static int get_int32_le(QEMUFile *f, void *pv, size_t size, |
149 | const VMStateField *field) | |
576d1abc JQ |
150 | { |
151 | int32_t *cur = pv; | |
152 | int32_t loaded; | |
153 | qemu_get_sbe32s(f, &loaded); | |
154 | ||
155 | if (loaded >= 0 && loaded <= *cur) { | |
156 | *cur = loaded; | |
157 | return 0; | |
158 | } | |
159 | error_report("Invalid value %" PRId32 | |
160 | " expecting positive value <= %" PRId32, | |
161 | loaded, *cur); | |
162 | return -EINVAL; | |
163 | } | |
164 | ||
165 | const VMStateInfo vmstate_info_int32_le = { | |
166 | .name = "int32 le", | |
167 | .get = get_int32_le, | |
168 | .put = put_int32, | |
169 | }; | |
170 | ||
171 | /* 64 bit int */ | |
172 | ||
03fee66f MAL |
173 | static int get_int64(QEMUFile *f, void *pv, size_t size, |
174 | const VMStateField *field) | |
576d1abc JQ |
175 | { |
176 | int64_t *v = pv; | |
177 | qemu_get_sbe64s(f, v); | |
178 | return 0; | |
179 | } | |
180 | ||
03fee66f | 181 | static int put_int64(QEMUFile *f, void *pv, size_t size, |
3ddba9a9 | 182 | const VMStateField *field, JSONWriter *vmdesc) |
576d1abc JQ |
183 | { |
184 | int64_t *v = pv; | |
185 | qemu_put_sbe64s(f, v); | |
186 | return 0; | |
187 | } | |
188 | ||
189 | const VMStateInfo vmstate_info_int64 = { | |
190 | .name = "int64", | |
191 | .get = get_int64, | |
192 | .put = put_int64, | |
193 | }; | |
194 | ||
195 | /* 8 bit unsigned int */ | |
196 | ||
03fee66f MAL |
197 | static int get_uint8(QEMUFile *f, void *pv, size_t size, |
198 | const VMStateField *field) | |
576d1abc JQ |
199 | { |
200 | uint8_t *v = pv; | |
201 | qemu_get_8s(f, v); | |
202 | return 0; | |
203 | } | |
204 | ||
03fee66f | 205 | static int put_uint8(QEMUFile *f, void *pv, size_t size, |
3ddba9a9 | 206 | const VMStateField *field, JSONWriter *vmdesc) |
576d1abc JQ |
207 | { |
208 | uint8_t *v = pv; | |
209 | qemu_put_8s(f, v); | |
210 | return 0; | |
211 | } | |
212 | ||
213 | const VMStateInfo vmstate_info_uint8 = { | |
214 | .name = "uint8", | |
215 | .get = get_uint8, | |
216 | .put = put_uint8, | |
217 | }; | |
218 | ||
219 | /* 16 bit unsigned int */ | |
220 | ||
03fee66f MAL |
221 | static int get_uint16(QEMUFile *f, void *pv, size_t size, |
222 | const VMStateField *field) | |
576d1abc JQ |
223 | { |
224 | uint16_t *v = pv; | |
225 | qemu_get_be16s(f, v); | |
226 | return 0; | |
227 | } | |
228 | ||
03fee66f | 229 | static int put_uint16(QEMUFile *f, void *pv, size_t size, |
3ddba9a9 | 230 | const VMStateField *field, JSONWriter *vmdesc) |
576d1abc JQ |
231 | { |
232 | uint16_t *v = pv; | |
233 | qemu_put_be16s(f, v); | |
234 | return 0; | |
235 | } | |
236 | ||
237 | const VMStateInfo vmstate_info_uint16 = { | |
238 | .name = "uint16", | |
239 | .get = get_uint16, | |
240 | .put = put_uint16, | |
241 | }; | |
242 | ||
243 | /* 32 bit unsigned int */ | |
244 | ||
03fee66f MAL |
245 | static int get_uint32(QEMUFile *f, void *pv, size_t size, |
246 | const VMStateField *field) | |
576d1abc JQ |
247 | { |
248 | uint32_t *v = pv; | |
249 | qemu_get_be32s(f, v); | |
250 | return 0; | |
251 | } | |
252 | ||
03fee66f | 253 | static int put_uint32(QEMUFile *f, void *pv, size_t size, |
3ddba9a9 | 254 | const VMStateField *field, JSONWriter *vmdesc) |
576d1abc JQ |
255 | { |
256 | uint32_t *v = pv; | |
257 | qemu_put_be32s(f, v); | |
258 | return 0; | |
259 | } | |
260 | ||
261 | const VMStateInfo vmstate_info_uint32 = { | |
262 | .name = "uint32", | |
263 | .get = get_uint32, | |
264 | .put = put_uint32, | |
265 | }; | |
266 | ||
267 | /* 32 bit uint. See that the received value is the same than the one | |
268 | in the field */ | |
269 | ||
270 | static int get_uint32_equal(QEMUFile *f, void *pv, size_t size, | |
03fee66f | 271 | const VMStateField *field) |
576d1abc JQ |
272 | { |
273 | uint32_t *v = pv; | |
274 | uint32_t v2; | |
275 | qemu_get_be32s(f, &v2); | |
276 | ||
277 | if (*v == v2) { | |
278 | return 0; | |
279 | } | |
280 | error_report("%" PRIx32 " != %" PRIx32, *v, v2); | |
d2164ad3 HP |
281 | if (field->err_hint) { |
282 | error_printf("%s\n", field->err_hint); | |
283 | } | |
576d1abc JQ |
284 | return -EINVAL; |
285 | } | |
286 | ||
287 | const VMStateInfo vmstate_info_uint32_equal = { | |
288 | .name = "uint32 equal", | |
289 | .get = get_uint32_equal, | |
290 | .put = put_uint32, | |
291 | }; | |
292 | ||
293 | /* 64 bit unsigned int */ | |
294 | ||
03fee66f MAL |
295 | static int get_uint64(QEMUFile *f, void *pv, size_t size, |
296 | const VMStateField *field) | |
576d1abc JQ |
297 | { |
298 | uint64_t *v = pv; | |
299 | qemu_get_be64s(f, v); | |
300 | return 0; | |
301 | } | |
302 | ||
03fee66f | 303 | static int put_uint64(QEMUFile *f, void *pv, size_t size, |
3ddba9a9 | 304 | const VMStateField *field, JSONWriter *vmdesc) |
576d1abc JQ |
305 | { |
306 | uint64_t *v = pv; | |
307 | qemu_put_be64s(f, v); | |
308 | return 0; | |
309 | } | |
310 | ||
311 | const VMStateInfo vmstate_info_uint64 = { | |
312 | .name = "uint64", | |
313 | .get = get_uint64, | |
314 | .put = put_uint64, | |
315 | }; | |
316 | ||
03fee66f MAL |
317 | static int get_nullptr(QEMUFile *f, void *pv, size_t size, |
318 | const VMStateField *field) | |
576d1abc JQ |
319 | |
320 | { | |
321 | if (qemu_get_byte(f) == VMS_NULLPTR_MARKER) { | |
322 | return 0; | |
323 | } | |
324 | error_report("vmstate: get_nullptr expected VMS_NULLPTR_MARKER"); | |
325 | return -EINVAL; | |
326 | } | |
327 | ||
328 | static int put_nullptr(QEMUFile *f, void *pv, size_t size, | |
3ddba9a9 | 329 | const VMStateField *field, JSONWriter *vmdesc) |
576d1abc JQ |
330 | |
331 | { | |
332 | if (pv == NULL) { | |
333 | qemu_put_byte(f, VMS_NULLPTR_MARKER); | |
334 | return 0; | |
335 | } | |
336 | error_report("vmstate: put_nullptr must be called with pv == NULL"); | |
337 | return -EINVAL; | |
338 | } | |
339 | ||
340 | const VMStateInfo vmstate_info_nullptr = { | |
341 | .name = "uint64", | |
342 | .get = get_nullptr, | |
343 | .put = put_nullptr, | |
344 | }; | |
345 | ||
346 | /* 64 bit unsigned int. See that the received value is the same than the one | |
347 | in the field */ | |
348 | ||
349 | static int get_uint64_equal(QEMUFile *f, void *pv, size_t size, | |
03fee66f | 350 | const VMStateField *field) |
576d1abc JQ |
351 | { |
352 | uint64_t *v = pv; | |
353 | uint64_t v2; | |
354 | qemu_get_be64s(f, &v2); | |
355 | ||
356 | if (*v == v2) { | |
357 | return 0; | |
358 | } | |
359 | error_report("%" PRIx64 " != %" PRIx64, *v, v2); | |
d2164ad3 HP |
360 | if (field->err_hint) { |
361 | error_printf("%s\n", field->err_hint); | |
362 | } | |
576d1abc JQ |
363 | return -EINVAL; |
364 | } | |
365 | ||
366 | const VMStateInfo vmstate_info_uint64_equal = { | |
367 | .name = "int64 equal", | |
368 | .get = get_uint64_equal, | |
369 | .put = put_uint64, | |
370 | }; | |
371 | ||
372 | /* 8 bit int. See that the received value is the same than the one | |
373 | in the field */ | |
374 | ||
375 | static int get_uint8_equal(QEMUFile *f, void *pv, size_t size, | |
03fee66f | 376 | const VMStateField *field) |
576d1abc JQ |
377 | { |
378 | uint8_t *v = pv; | |
379 | uint8_t v2; | |
380 | qemu_get_8s(f, &v2); | |
381 | ||
382 | if (*v == v2) { | |
383 | return 0; | |
384 | } | |
385 | error_report("%x != %x", *v, v2); | |
d2164ad3 HP |
386 | if (field->err_hint) { |
387 | error_printf("%s\n", field->err_hint); | |
388 | } | |
576d1abc JQ |
389 | return -EINVAL; |
390 | } | |
391 | ||
392 | const VMStateInfo vmstate_info_uint8_equal = { | |
393 | .name = "uint8 equal", | |
394 | .get = get_uint8_equal, | |
395 | .put = put_uint8, | |
396 | }; | |
397 | ||
398 | /* 16 bit unsigned int int. See that the received value is the same than the one | |
399 | in the field */ | |
400 | ||
401 | static int get_uint16_equal(QEMUFile *f, void *pv, size_t size, | |
03fee66f | 402 | const VMStateField *field) |
576d1abc JQ |
403 | { |
404 | uint16_t *v = pv; | |
405 | uint16_t v2; | |
406 | qemu_get_be16s(f, &v2); | |
407 | ||
408 | if (*v == v2) { | |
409 | return 0; | |
410 | } | |
411 | error_report("%x != %x", *v, v2); | |
d2164ad3 HP |
412 | if (field->err_hint) { |
413 | error_printf("%s\n", field->err_hint); | |
414 | } | |
576d1abc JQ |
415 | return -EINVAL; |
416 | } | |
417 | ||
418 | const VMStateInfo vmstate_info_uint16_equal = { | |
419 | .name = "uint16 equal", | |
420 | .get = get_uint16_equal, | |
421 | .put = put_uint16, | |
422 | }; | |
423 | ||
576d1abc JQ |
424 | /* CPU_DoubleU type */ |
425 | ||
426 | static int get_cpudouble(QEMUFile *f, void *pv, size_t size, | |
03fee66f | 427 | const VMStateField *field) |
576d1abc JQ |
428 | { |
429 | CPU_DoubleU *v = pv; | |
430 | qemu_get_be32s(f, &v->l.upper); | |
431 | qemu_get_be32s(f, &v->l.lower); | |
432 | return 0; | |
433 | } | |
434 | ||
435 | static int put_cpudouble(QEMUFile *f, void *pv, size_t size, | |
3ddba9a9 | 436 | const VMStateField *field, JSONWriter *vmdesc) |
576d1abc JQ |
437 | { |
438 | CPU_DoubleU *v = pv; | |
439 | qemu_put_be32s(f, &v->l.upper); | |
440 | qemu_put_be32s(f, &v->l.lower); | |
441 | return 0; | |
442 | } | |
443 | ||
444 | const VMStateInfo vmstate_info_cpudouble = { | |
445 | .name = "CPU_Double_U", | |
446 | .get = get_cpudouble, | |
447 | .put = put_cpudouble, | |
448 | }; | |
449 | ||
450 | /* uint8_t buffers */ | |
451 | ||
452 | static int get_buffer(QEMUFile *f, void *pv, size_t size, | |
03fee66f | 453 | const VMStateField *field) |
576d1abc JQ |
454 | { |
455 | uint8_t *v = pv; | |
456 | qemu_get_buffer(f, v, size); | |
457 | return 0; | |
458 | } | |
459 | ||
03fee66f | 460 | static int put_buffer(QEMUFile *f, void *pv, size_t size, |
3ddba9a9 | 461 | const VMStateField *field, JSONWriter *vmdesc) |
576d1abc JQ |
462 | { |
463 | uint8_t *v = pv; | |
464 | qemu_put_buffer(f, v, size); | |
465 | return 0; | |
466 | } | |
467 | ||
468 | const VMStateInfo vmstate_info_buffer = { | |
469 | .name = "buffer", | |
470 | .get = get_buffer, | |
471 | .put = put_buffer, | |
472 | }; | |
473 | ||
474 | /* unused buffers: space that was used for some fields that are | |
475 | not useful anymore */ | |
476 | ||
477 | static int get_unused_buffer(QEMUFile *f, void *pv, size_t size, | |
03fee66f | 478 | const VMStateField *field) |
576d1abc JQ |
479 | { |
480 | uint8_t buf[1024]; | |
481 | int block_len; | |
482 | ||
483 | while (size > 0) { | |
484 | block_len = MIN(sizeof(buf), size); | |
485 | size -= block_len; | |
486 | qemu_get_buffer(f, buf, block_len); | |
487 | } | |
488 | return 0; | |
489 | } | |
490 | ||
491 | static int put_unused_buffer(QEMUFile *f, void *pv, size_t size, | |
3ddba9a9 | 492 | const VMStateField *field, JSONWriter *vmdesc) |
576d1abc JQ |
493 | { |
494 | static const uint8_t buf[1024]; | |
495 | int block_len; | |
496 | ||
497 | while (size > 0) { | |
498 | block_len = MIN(sizeof(buf), size); | |
499 | size -= block_len; | |
500 | qemu_put_buffer(f, buf, block_len); | |
501 | } | |
502 | ||
503 | return 0; | |
504 | } | |
505 | ||
506 | const VMStateInfo vmstate_info_unused_buffer = { | |
507 | .name = "unused_buffer", | |
508 | .get = get_unused_buffer, | |
509 | .put = put_unused_buffer, | |
510 | }; | |
511 | ||
512 | /* vmstate_info_tmp, see VMSTATE_WITH_TMP, the idea is that we allocate | |
513 | * a temporary buffer and the pre_load/pre_save methods in the child vmsd | |
514 | * copy stuff from the parent into the child and do calculations to fill | |
515 | * in fields that don't really exist in the parent but need to be in the | |
516 | * stream. | |
517 | */ | |
03fee66f MAL |
518 | static int get_tmp(QEMUFile *f, void *pv, size_t size, |
519 | const VMStateField *field) | |
576d1abc JQ |
520 | { |
521 | int ret; | |
522 | const VMStateDescription *vmsd = field->vmsd; | |
523 | int version_id = field->version_id; | |
524 | void *tmp = g_malloc(size); | |
525 | ||
526 | /* Writes the parent field which is at the start of the tmp */ | |
527 | *(void **)tmp = pv; | |
528 | ret = vmstate_load_state(f, vmsd, tmp, version_id); | |
529 | g_free(tmp); | |
530 | return ret; | |
531 | } | |
532 | ||
03fee66f | 533 | static int put_tmp(QEMUFile *f, void *pv, size_t size, |
3ddba9a9 | 534 | const VMStateField *field, JSONWriter *vmdesc) |
576d1abc JQ |
535 | { |
536 | const VMStateDescription *vmsd = field->vmsd; | |
537 | void *tmp = g_malloc(size); | |
2f168d07 | 538 | int ret; |
576d1abc JQ |
539 | |
540 | /* Writes the parent field which is at the start of the tmp */ | |
541 | *(void **)tmp = pv; | |
2f168d07 | 542 | ret = vmstate_save_state(f, vmsd, tmp, vmdesc); |
576d1abc JQ |
543 | g_free(tmp); |
544 | ||
2f168d07 | 545 | return ret; |
576d1abc JQ |
546 | } |
547 | ||
548 | const VMStateInfo vmstate_info_tmp = { | |
549 | .name = "tmp", | |
550 | .get = get_tmp, | |
551 | .put = put_tmp, | |
552 | }; | |
553 | ||
554 | /* bitmaps (as defined by bitmap.h). Note that size here is the size | |
555 | * of the bitmap in bits. The on-the-wire format of a bitmap is 64 | |
556 | * bit words with the bits in big endian order. The in-memory format | |
557 | * is an array of 'unsigned long', which may be either 32 or 64 bits. | |
558 | */ | |
559 | /* This is the number of 64 bit words sent over the wire */ | |
560 | #define BITS_TO_U64S(nr) DIV_ROUND_UP(nr, 64) | |
03fee66f MAL |
561 | static int get_bitmap(QEMUFile *f, void *pv, size_t size, |
562 | const VMStateField *field) | |
576d1abc JQ |
563 | { |
564 | unsigned long *bmp = pv; | |
565 | int i, idx = 0; | |
566 | for (i = 0; i < BITS_TO_U64S(size); i++) { | |
567 | uint64_t w = qemu_get_be64(f); | |
568 | bmp[idx++] = w; | |
569 | if (sizeof(unsigned long) == 4 && idx < BITS_TO_LONGS(size)) { | |
570 | bmp[idx++] = w >> 32; | |
571 | } | |
572 | } | |
573 | return 0; | |
574 | } | |
575 | ||
03fee66f | 576 | static int put_bitmap(QEMUFile *f, void *pv, size_t size, |
3ddba9a9 | 577 | const VMStateField *field, JSONWriter *vmdesc) |
576d1abc JQ |
578 | { |
579 | unsigned long *bmp = pv; | |
580 | int i, idx = 0; | |
581 | for (i = 0; i < BITS_TO_U64S(size); i++) { | |
582 | uint64_t w = bmp[idx++]; | |
583 | if (sizeof(unsigned long) == 4 && idx < BITS_TO_LONGS(size)) { | |
584 | w |= ((uint64_t)bmp[idx++]) << 32; | |
585 | } | |
586 | qemu_put_be64(f, w); | |
587 | } | |
588 | ||
589 | return 0; | |
590 | } | |
591 | ||
592 | const VMStateInfo vmstate_info_bitmap = { | |
593 | .name = "bitmap", | |
594 | .get = get_bitmap, | |
595 | .put = put_bitmap, | |
596 | }; | |
597 | ||
598 | /* get for QTAILQ | |
599 | * meta data about the QTAILQ is encoded in a VMStateField structure | |
600 | */ | |
601 | static int get_qtailq(QEMUFile *f, void *pv, size_t unused_size, | |
03fee66f | 602 | const VMStateField *field) |
576d1abc JQ |
603 | { |
604 | int ret = 0; | |
605 | const VMStateDescription *vmsd = field->vmsd; | |
606 | /* size of a QTAILQ element */ | |
607 | size_t size = field->size; | |
608 | /* offset of the QTAILQ entry in a QTAILQ element */ | |
609 | size_t entry_offset = field->start; | |
610 | int version_id = field->version_id; | |
611 | void *elm; | |
612 | ||
613 | trace_get_qtailq(vmsd->name, version_id); | |
614 | if (version_id > vmsd->version_id) { | |
615 | error_report("%s %s", vmsd->name, "too new"); | |
616 | trace_get_qtailq_end(vmsd->name, "too new", -EINVAL); | |
617 | ||
618 | return -EINVAL; | |
619 | } | |
620 | if (version_id < vmsd->minimum_version_id) { | |
621 | error_report("%s %s", vmsd->name, "too old"); | |
622 | trace_get_qtailq_end(vmsd->name, "too old", -EINVAL); | |
623 | return -EINVAL; | |
624 | } | |
625 | ||
626 | while (qemu_get_byte(f)) { | |
627 | elm = g_malloc(size); | |
628 | ret = vmstate_load_state(f, vmsd, elm, version_id); | |
629 | if (ret) { | |
630 | return ret; | |
631 | } | |
632 | QTAILQ_RAW_INSERT_TAIL(pv, elm, entry_offset); | |
633 | } | |
634 | ||
635 | trace_get_qtailq_end(vmsd->name, "end", ret); | |
636 | return ret; | |
637 | } | |
638 | ||
639 | /* put for QTAILQ */ | |
640 | static int put_qtailq(QEMUFile *f, void *pv, size_t unused_size, | |
3ddba9a9 | 641 | const VMStateField *field, JSONWriter *vmdesc) |
576d1abc JQ |
642 | { |
643 | const VMStateDescription *vmsd = field->vmsd; | |
644 | /* offset of the QTAILQ entry in a QTAILQ element*/ | |
645 | size_t entry_offset = field->start; | |
646 | void *elm; | |
2f168d07 | 647 | int ret; |
576d1abc JQ |
648 | |
649 | trace_put_qtailq(vmsd->name, vmsd->version_id); | |
650 | ||
651 | QTAILQ_RAW_FOREACH(elm, pv, entry_offset) { | |
652 | qemu_put_byte(f, true); | |
2f168d07 DDAG |
653 | ret = vmstate_save_state(f, vmsd, elm, vmdesc); |
654 | if (ret) { | |
655 | return ret; | |
656 | } | |
576d1abc JQ |
657 | } |
658 | qemu_put_byte(f, false); | |
659 | ||
660 | trace_put_qtailq_end(vmsd->name, "end"); | |
661 | ||
662 | return 0; | |
663 | } | |
664 | const VMStateInfo vmstate_info_qtailq = { | |
665 | .name = "qtailq", | |
666 | .get = get_qtailq, | |
667 | .put = put_qtailq, | |
668 | }; | |
9a85e4b8 EA |
669 | |
670 | struct put_gtree_data { | |
671 | QEMUFile *f; | |
672 | const VMStateDescription *key_vmsd; | |
673 | const VMStateDescription *val_vmsd; | |
3ddba9a9 | 674 | JSONWriter *vmdesc; |
9a85e4b8 EA |
675 | int ret; |
676 | }; | |
677 | ||
678 | static gboolean put_gtree_elem(gpointer key, gpointer value, gpointer data) | |
679 | { | |
680 | struct put_gtree_data *capsule = (struct put_gtree_data *)data; | |
681 | QEMUFile *f = capsule->f; | |
682 | int ret; | |
683 | ||
684 | qemu_put_byte(f, true); | |
685 | ||
686 | /* put the key */ | |
687 | if (!capsule->key_vmsd) { | |
688 | qemu_put_be64(f, (uint64_t)(uintptr_t)(key)); /* direct key */ | |
689 | } else { | |
690 | ret = vmstate_save_state(f, capsule->key_vmsd, key, capsule->vmdesc); | |
691 | if (ret) { | |
692 | capsule->ret = ret; | |
693 | return true; | |
694 | } | |
695 | } | |
696 | ||
697 | /* put the data */ | |
698 | ret = vmstate_save_state(f, capsule->val_vmsd, value, capsule->vmdesc); | |
699 | if (ret) { | |
700 | capsule->ret = ret; | |
701 | return true; | |
702 | } | |
703 | return false; | |
704 | } | |
705 | ||
706 | static int put_gtree(QEMUFile *f, void *pv, size_t unused_size, | |
3ddba9a9 | 707 | const VMStateField *field, JSONWriter *vmdesc) |
9a85e4b8 EA |
708 | { |
709 | bool direct_key = (!field->start); | |
710 | const VMStateDescription *key_vmsd = direct_key ? NULL : &field->vmsd[1]; | |
711 | const VMStateDescription *val_vmsd = &field->vmsd[0]; | |
712 | const char *key_vmsd_name = direct_key ? "direct" : key_vmsd->name; | |
713 | struct put_gtree_data capsule = { | |
714 | .f = f, | |
715 | .key_vmsd = key_vmsd, | |
716 | .val_vmsd = val_vmsd, | |
717 | .vmdesc = vmdesc, | |
718 | .ret = 0}; | |
719 | GTree **pval = pv; | |
720 | GTree *tree = *pval; | |
721 | uint32_t nnodes = g_tree_nnodes(tree); | |
722 | int ret; | |
723 | ||
724 | trace_put_gtree(field->name, key_vmsd_name, val_vmsd->name, nnodes); | |
725 | qemu_put_be32(f, nnodes); | |
726 | g_tree_foreach(tree, put_gtree_elem, (gpointer)&capsule); | |
727 | qemu_put_byte(f, false); | |
728 | ret = capsule.ret; | |
729 | if (ret) { | |
730 | error_report("%s : failed to save gtree (%d)", field->name, ret); | |
731 | } | |
732 | trace_put_gtree_end(field->name, key_vmsd_name, val_vmsd->name, ret); | |
733 | return ret; | |
734 | } | |
735 | ||
736 | static int get_gtree(QEMUFile *f, void *pv, size_t unused_size, | |
737 | const VMStateField *field) | |
738 | { | |
739 | bool direct_key = (!field->start); | |
740 | const VMStateDescription *key_vmsd = direct_key ? NULL : &field->vmsd[1]; | |
741 | const VMStateDescription *val_vmsd = &field->vmsd[0]; | |
742 | const char *key_vmsd_name = direct_key ? "direct" : key_vmsd->name; | |
743 | int version_id = field->version_id; | |
744 | size_t key_size = field->start; | |
745 | size_t val_size = field->size; | |
746 | int nnodes, count = 0; | |
747 | GTree **pval = pv; | |
748 | GTree *tree = *pval; | |
749 | void *key, *val; | |
750 | int ret = 0; | |
751 | ||
752 | /* in case of direct key, the key vmsd can be {}, ie. check fields */ | |
753 | if (!direct_key && version_id > key_vmsd->version_id) { | |
754 | error_report("%s %s", key_vmsd->name, "too new"); | |
755 | return -EINVAL; | |
756 | } | |
757 | if (!direct_key && version_id < key_vmsd->minimum_version_id) { | |
758 | error_report("%s %s", key_vmsd->name, "too old"); | |
759 | return -EINVAL; | |
760 | } | |
761 | if (version_id > val_vmsd->version_id) { | |
762 | error_report("%s %s", val_vmsd->name, "too new"); | |
763 | return -EINVAL; | |
764 | } | |
765 | if (version_id < val_vmsd->minimum_version_id) { | |
766 | error_report("%s %s", val_vmsd->name, "too old"); | |
767 | return -EINVAL; | |
768 | } | |
769 | ||
770 | nnodes = qemu_get_be32(f); | |
771 | trace_get_gtree(field->name, key_vmsd_name, val_vmsd->name, nnodes); | |
772 | ||
773 | while (qemu_get_byte(f)) { | |
774 | if ((++count) > nnodes) { | |
775 | ret = -EINVAL; | |
776 | break; | |
777 | } | |
778 | if (direct_key) { | |
779 | key = (void *)(uintptr_t)qemu_get_be64(f); | |
780 | } else { | |
781 | key = g_malloc0(key_size); | |
782 | ret = vmstate_load_state(f, key_vmsd, key, version_id); | |
783 | if (ret) { | |
784 | error_report("%s : failed to load %s (%d)", | |
785 | field->name, key_vmsd->name, ret); | |
786 | goto key_error; | |
787 | } | |
788 | } | |
789 | val = g_malloc0(val_size); | |
790 | ret = vmstate_load_state(f, val_vmsd, val, version_id); | |
791 | if (ret) { | |
792 | error_report("%s : failed to load %s (%d)", | |
793 | field->name, val_vmsd->name, ret); | |
794 | goto val_error; | |
795 | } | |
796 | g_tree_insert(tree, key, val); | |
797 | } | |
798 | if (count != nnodes) { | |
799 | error_report("%s inconsistent stream when loading the gtree", | |
800 | field->name); | |
801 | return -EINVAL; | |
802 | } | |
803 | trace_get_gtree_end(field->name, key_vmsd_name, val_vmsd->name, ret); | |
804 | return ret; | |
805 | val_error: | |
806 | g_free(val); | |
807 | key_error: | |
808 | if (!direct_key) { | |
809 | g_free(key); | |
810 | } | |
811 | trace_get_gtree_end(field->name, key_vmsd_name, val_vmsd->name, ret); | |
812 | return ret; | |
813 | } | |
814 | ||
815 | ||
816 | const VMStateInfo vmstate_info_gtree = { | |
817 | .name = "gtree", | |
818 | .get = get_gtree, | |
819 | .put = put_gtree, | |
820 | }; | |
4746dbf8 EA |
821 | |
822 | static int put_qlist(QEMUFile *f, void *pv, size_t unused_size, | |
3ddba9a9 | 823 | const VMStateField *field, JSONWriter *vmdesc) |
4746dbf8 EA |
824 | { |
825 | const VMStateDescription *vmsd = field->vmsd; | |
826 | /* offset of the QTAILQ entry in a QTAILQ element*/ | |
827 | size_t entry_offset = field->start; | |
828 | void *elm; | |
829 | int ret; | |
830 | ||
831 | trace_put_qlist(field->name, vmsd->name, vmsd->version_id); | |
832 | QLIST_RAW_FOREACH(elm, pv, entry_offset) { | |
833 | qemu_put_byte(f, true); | |
834 | ret = vmstate_save_state(f, vmsd, elm, vmdesc); | |
835 | if (ret) { | |
836 | error_report("%s: failed to save %s (%d)", field->name, | |
837 | vmsd->name, ret); | |
838 | return ret; | |
839 | } | |
840 | } | |
841 | qemu_put_byte(f, false); | |
842 | trace_put_qlist_end(field->name, vmsd->name); | |
843 | ||
844 | return 0; | |
845 | } | |
846 | ||
847 | static int get_qlist(QEMUFile *f, void *pv, size_t unused_size, | |
848 | const VMStateField *field) | |
849 | { | |
850 | int ret = 0; | |
851 | const VMStateDescription *vmsd = field->vmsd; | |
852 | /* size of a QLIST element */ | |
853 | size_t size = field->size; | |
854 | /* offset of the QLIST entry in a QLIST element */ | |
855 | size_t entry_offset = field->start; | |
856 | int version_id = field->version_id; | |
a085664f | 857 | void *elm, *prev = NULL; |
4746dbf8 EA |
858 | |
859 | trace_get_qlist(field->name, vmsd->name, vmsd->version_id); | |
860 | if (version_id > vmsd->version_id) { | |
861 | error_report("%s %s", vmsd->name, "too new"); | |
862 | return -EINVAL; | |
863 | } | |
864 | if (version_id < vmsd->minimum_version_id) { | |
865 | error_report("%s %s", vmsd->name, "too old"); | |
866 | return -EINVAL; | |
867 | } | |
868 | ||
869 | while (qemu_get_byte(f)) { | |
870 | elm = g_malloc(size); | |
871 | ret = vmstate_load_state(f, vmsd, elm, version_id); | |
872 | if (ret) { | |
873 | error_report("%s: failed to load %s (%d)", field->name, | |
874 | vmsd->name, ret); | |
875 | g_free(elm); | |
876 | return ret; | |
877 | } | |
a085664f EA |
878 | if (!prev) { |
879 | QLIST_RAW_INSERT_HEAD(pv, elm, entry_offset); | |
880 | } else { | |
881 | QLIST_RAW_INSERT_AFTER(pv, prev, elm, entry_offset); | |
882 | } | |
883 | prev = elm; | |
4746dbf8 | 884 | } |
4746dbf8 EA |
885 | trace_get_qlist_end(field->name, vmsd->name); |
886 | ||
887 | return ret; | |
888 | } | |
889 | ||
890 | const VMStateInfo vmstate_info_qlist = { | |
891 | .name = "qlist", | |
892 | .get = get_qlist, | |
893 | .put = put_qlist, | |
894 | }; |