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Commit | Line | Data |
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a672b469 AL |
1 | /* |
2 | * QEMU System Emulator | |
3 | * | |
4 | * Copyright (c) 2003-2008 Fabrice Bellard | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
7 | * of this software and associated documentation files (the "Software"), to deal | |
8 | * in the Software without restriction, including without limitation the rights | |
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
10 | * copies of the Software, and to permit persons to whom the Software is | |
11 | * furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
22 | * THE SOFTWARE. | |
23 | */ | |
a672b469 AL |
24 | #include <unistd.h> |
25 | #include <fcntl.h> | |
26 | #include <signal.h> | |
27 | #include <time.h> | |
28 | #include <errno.h> | |
29 | #include <sys/time.h> | |
30 | #include <zlib.h> | |
31 | ||
71e72a19 | 32 | /* Needed early for CONFIG_BSD etc. */ |
d40cdb10 BS |
33 | #include "config-host.h" |
34 | ||
a672b469 AL |
35 | #ifndef _WIN32 |
36 | #include <sys/times.h> | |
37 | #include <sys/wait.h> | |
38 | #include <termios.h> | |
39 | #include <sys/mman.h> | |
40 | #include <sys/ioctl.h> | |
41 | #include <sys/resource.h> | |
42 | #include <sys/socket.h> | |
43 | #include <netinet/in.h> | |
44 | #include <net/if.h> | |
a672b469 AL |
45 | #include <arpa/inet.h> |
46 | #include <dirent.h> | |
47 | #include <netdb.h> | |
48 | #include <sys/select.h> | |
71e72a19 | 49 | #ifdef CONFIG_BSD |
a672b469 | 50 | #include <sys/stat.h> |
a167ba50 | 51 | #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__) |
a672b469 AL |
52 | #include <libutil.h> |
53 | #else | |
54 | #include <util.h> | |
55 | #endif | |
a672b469 AL |
56 | #ifdef __linux__ |
57 | #include <pty.h> | |
58 | #include <malloc.h> | |
59 | #include <linux/rtc.h> | |
60 | #endif | |
61 | #endif | |
62 | #endif | |
63 | ||
64 | #ifdef _WIN32 | |
49dc768d | 65 | #include <windows.h> |
a672b469 AL |
66 | #include <malloc.h> |
67 | #include <sys/timeb.h> | |
68 | #include <mmsystem.h> | |
69 | #define getopt_long_only getopt_long | |
70 | #define memalign(align, size) malloc(size) | |
71 | #endif | |
72 | ||
511d2b14 BS |
73 | #include "qemu-common.h" |
74 | #include "hw/hw.h" | |
7685ee6a | 75 | #include "hw/qdev.h" |
511d2b14 BS |
76 | #include "net.h" |
77 | #include "monitor.h" | |
78 | #include "sysemu.h" | |
79 | #include "qemu-timer.h" | |
80 | #include "qemu-char.h" | |
666daa68 | 81 | #include "blockdev.h" |
511d2b14 BS |
82 | #include "audio/audio.h" |
83 | #include "migration.h" | |
84 | #include "qemu_socket.h" | |
72cf2d4f | 85 | #include "qemu-queue.h" |
511d2b14 | 86 | |
a672b469 | 87 | #define SELF_ANNOUNCE_ROUNDS 5 |
a672b469 | 88 | |
18995b98 | 89 | #ifndef ETH_P_RARP |
f8778a77 | 90 | #define ETH_P_RARP 0x8035 |
18995b98 N |
91 | #endif |
92 | #define ARP_HTYPE_ETH 0x0001 | |
93 | #define ARP_PTYPE_IP 0x0800 | |
94 | #define ARP_OP_REQUEST_REV 0x3 | |
95 | ||
96 | static int announce_self_create(uint8_t *buf, | |
a672b469 AL |
97 | uint8_t *mac_addr) |
98 | { | |
18995b98 N |
99 | /* Ethernet header. */ |
100 | memset(buf, 0xff, 6); /* destination MAC addr */ | |
101 | memcpy(buf + 6, mac_addr, 6); /* source MAC addr */ | |
102 | *(uint16_t *)(buf + 12) = htons(ETH_P_RARP); /* ethertype */ | |
103 | ||
104 | /* RARP header. */ | |
105 | *(uint16_t *)(buf + 14) = htons(ARP_HTYPE_ETH); /* hardware addr space */ | |
106 | *(uint16_t *)(buf + 16) = htons(ARP_PTYPE_IP); /* protocol addr space */ | |
107 | *(buf + 18) = 6; /* hardware addr length (ethernet) */ | |
108 | *(buf + 19) = 4; /* protocol addr length (IPv4) */ | |
109 | *(uint16_t *)(buf + 20) = htons(ARP_OP_REQUEST_REV); /* opcode */ | |
110 | memcpy(buf + 22, mac_addr, 6); /* source hw addr */ | |
111 | memset(buf + 28, 0x00, 4); /* source protocol addr */ | |
112 | memcpy(buf + 32, mac_addr, 6); /* target hw addr */ | |
113 | memset(buf + 38, 0x00, 4); /* target protocol addr */ | |
114 | ||
115 | /* Padding to get up to 60 bytes (ethernet min packet size, minus FCS). */ | |
116 | memset(buf + 42, 0x00, 18); | |
117 | ||
118 | return 60; /* len (FCS will be added by hardware) */ | |
a672b469 AL |
119 | } |
120 | ||
f401ca22 | 121 | static void qemu_announce_self_iter(NICState *nic, void *opaque) |
a672b469 | 122 | { |
18995b98 | 123 | uint8_t buf[60]; |
f401ca22 MM |
124 | int len; |
125 | ||
126 | len = announce_self_create(buf, nic->conf->macaddr.a); | |
127 | ||
128 | qemu_send_packet_raw(&nic->nc, buf, len); | |
129 | } | |
130 | ||
131 | ||
132 | static void qemu_announce_self_once(void *opaque) | |
133 | { | |
ed8b330b GN |
134 | static int count = SELF_ANNOUNCE_ROUNDS; |
135 | QEMUTimer *timer = *(QEMUTimer **)opaque; | |
a672b469 | 136 | |
f401ca22 MM |
137 | qemu_foreach_nic(qemu_announce_self_iter, NULL); |
138 | ||
18995b98 N |
139 | if (--count) { |
140 | /* delay 50ms, 150ms, 250ms, ... */ | |
141 | qemu_mod_timer(timer, qemu_get_clock(rt_clock) + | |
142 | 50 + (SELF_ANNOUNCE_ROUNDS - count - 1) * 100); | |
ed8b330b GN |
143 | } else { |
144 | qemu_del_timer(timer); | |
145 | qemu_free_timer(timer); | |
146 | } | |
147 | } | |
148 | ||
149 | void qemu_announce_self(void) | |
150 | { | |
151 | static QEMUTimer *timer; | |
152 | timer = qemu_new_timer(rt_clock, qemu_announce_self_once, &timer); | |
153 | qemu_announce_self_once(&timer); | |
a672b469 AL |
154 | } |
155 | ||
156 | /***********************************************************/ | |
157 | /* savevm/loadvm support */ | |
158 | ||
159 | #define IO_BUF_SIZE 32768 | |
160 | ||
161 | struct QEMUFile { | |
162 | QEMUFilePutBufferFunc *put_buffer; | |
163 | QEMUFileGetBufferFunc *get_buffer; | |
164 | QEMUFileCloseFunc *close; | |
165 | QEMUFileRateLimit *rate_limit; | |
19629537 | 166 | QEMUFileSetRateLimit *set_rate_limit; |
c163b5ca | 167 | QEMUFileGetRateLimit *get_rate_limit; |
a672b469 AL |
168 | void *opaque; |
169 | int is_write; | |
170 | ||
171 | int64_t buf_offset; /* start of buffer when writing, end of buffer | |
172 | when reading */ | |
173 | int buf_index; | |
174 | int buf_size; /* 0 when writing */ | |
175 | uint8_t buf[IO_BUF_SIZE]; | |
176 | ||
177 | int has_error; | |
178 | }; | |
179 | ||
7f79dd28 | 180 | typedef struct QEMUFileStdio |
a672b469 | 181 | { |
7f79dd28 | 182 | FILE *stdio_file; |
a672b469 | 183 | QEMUFile *file; |
7f79dd28 | 184 | } QEMUFileStdio; |
a672b469 AL |
185 | |
186 | typedef struct QEMUFileSocket | |
187 | { | |
188 | int fd; | |
189 | QEMUFile *file; | |
190 | } QEMUFileSocket; | |
191 | ||
192 | static int socket_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) | |
193 | { | |
194 | QEMUFileSocket *s = opaque; | |
195 | ssize_t len; | |
196 | ||
197 | do { | |
c5b76b38 | 198 | len = recv(s->fd, (void *)buf, size, 0); |
a672b469 AL |
199 | } while (len == -1 && socket_error() == EINTR); |
200 | ||
201 | if (len == -1) | |
202 | len = -socket_error(); | |
203 | ||
204 | return len; | |
205 | } | |
206 | ||
207 | static int socket_close(void *opaque) | |
208 | { | |
209 | QEMUFileSocket *s = opaque; | |
210 | qemu_free(s); | |
211 | return 0; | |
212 | } | |
213 | ||
7f79dd28 | 214 | static int stdio_put_buffer(void *opaque, const uint8_t *buf, int64_t pos, int size) |
a672b469 | 215 | { |
7f79dd28 PB |
216 | QEMUFileStdio *s = opaque; |
217 | return fwrite(buf, 1, size, s->stdio_file); | |
a672b469 AL |
218 | } |
219 | ||
7f79dd28 | 220 | static int stdio_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) |
a672b469 | 221 | { |
7f79dd28 PB |
222 | QEMUFileStdio *s = opaque; |
223 | FILE *fp = s->stdio_file; | |
8a67ec4d UL |
224 | int bytes; |
225 | ||
226 | do { | |
227 | clearerr(fp); | |
228 | bytes = fread(buf, 1, size, fp); | |
229 | } while ((bytes == 0) && ferror(fp) && (errno == EINTR)); | |
230 | return bytes; | |
a672b469 AL |
231 | } |
232 | ||
7f79dd28 PB |
233 | static int stdio_pclose(void *opaque) |
234 | { | |
235 | QEMUFileStdio *s = opaque; | |
41ef56e6 AL |
236 | int ret; |
237 | ret = pclose(s->stdio_file); | |
7f79dd28 | 238 | qemu_free(s); |
41ef56e6 | 239 | return ret; |
7f79dd28 PB |
240 | } |
241 | ||
242 | static int stdio_fclose(void *opaque) | |
a672b469 | 243 | { |
7f79dd28 PB |
244 | QEMUFileStdio *s = opaque; |
245 | fclose(s->stdio_file); | |
a672b469 AL |
246 | qemu_free(s); |
247 | return 0; | |
248 | } | |
249 | ||
7f79dd28 | 250 | QEMUFile *qemu_popen(FILE *stdio_file, const char *mode) |
a672b469 | 251 | { |
7f79dd28 | 252 | QEMUFileStdio *s; |
a672b469 | 253 | |
7f79dd28 | 254 | if (stdio_file == NULL || mode == NULL || (mode[0] != 'r' && mode[0] != 'w') || mode[1] != 0) { |
a672b469 AL |
255 | fprintf(stderr, "qemu_popen: Argument validity check failed\n"); |
256 | return NULL; | |
257 | } | |
258 | ||
7f79dd28 | 259 | s = qemu_mallocz(sizeof(QEMUFileStdio)); |
a672b469 | 260 | |
7f79dd28 | 261 | s->stdio_file = stdio_file; |
a672b469 AL |
262 | |
263 | if(mode[0] == 'r') { | |
c163b5ca | 264 | s->file = qemu_fopen_ops(s, NULL, stdio_get_buffer, stdio_pclose, |
265 | NULL, NULL, NULL); | |
a672b469 | 266 | } else { |
c163b5ca | 267 | s->file = qemu_fopen_ops(s, stdio_put_buffer, NULL, stdio_pclose, |
268 | NULL, NULL, NULL); | |
a672b469 | 269 | } |
a672b469 AL |
270 | return s->file; |
271 | } | |
272 | ||
273 | QEMUFile *qemu_popen_cmd(const char *command, const char *mode) | |
274 | { | |
275 | FILE *popen_file; | |
276 | ||
277 | popen_file = popen(command, mode); | |
278 | if(popen_file == NULL) { | |
279 | return NULL; | |
280 | } | |
281 | ||
282 | return qemu_popen(popen_file, mode); | |
283 | } | |
284 | ||
7f79dd28 | 285 | int qemu_stdio_fd(QEMUFile *f) |
8a43b1ea | 286 | { |
7f79dd28 | 287 | QEMUFileStdio *p; |
8a43b1ea CL |
288 | int fd; |
289 | ||
7f79dd28 PB |
290 | p = (QEMUFileStdio *)f->opaque; |
291 | fd = fileno(p->stdio_file); | |
8a43b1ea CL |
292 | |
293 | return fd; | |
294 | } | |
295 | ||
5ac1fad3 PB |
296 | QEMUFile *qemu_fdopen(int fd, const char *mode) |
297 | { | |
298 | QEMUFileStdio *s; | |
299 | ||
300 | if (mode == NULL || | |
301 | (mode[0] != 'r' && mode[0] != 'w') || | |
302 | mode[1] != 'b' || mode[2] != 0) { | |
303 | fprintf(stderr, "qemu_fdopen: Argument validity check failed\n"); | |
304 | return NULL; | |
305 | } | |
306 | ||
307 | s = qemu_mallocz(sizeof(QEMUFileStdio)); | |
308 | s->stdio_file = fdopen(fd, mode); | |
309 | if (!s->stdio_file) | |
310 | goto fail; | |
311 | ||
312 | if(mode[0] == 'r') { | |
c163b5ca | 313 | s->file = qemu_fopen_ops(s, NULL, stdio_get_buffer, stdio_fclose, |
314 | NULL, NULL, NULL); | |
5ac1fad3 | 315 | } else { |
c163b5ca | 316 | s->file = qemu_fopen_ops(s, stdio_put_buffer, NULL, stdio_fclose, |
317 | NULL, NULL, NULL); | |
5ac1fad3 PB |
318 | } |
319 | return s->file; | |
320 | ||
321 | fail: | |
322 | qemu_free(s); | |
323 | return NULL; | |
324 | } | |
325 | ||
a672b469 AL |
326 | QEMUFile *qemu_fopen_socket(int fd) |
327 | { | |
328 | QEMUFileSocket *s = qemu_mallocz(sizeof(QEMUFileSocket)); | |
329 | ||
a672b469 | 330 | s->fd = fd; |
c163b5ca | 331 | s->file = qemu_fopen_ops(s, NULL, socket_get_buffer, socket_close, |
332 | NULL, NULL, NULL); | |
a672b469 AL |
333 | return s->file; |
334 | } | |
335 | ||
a672b469 AL |
336 | static int file_put_buffer(void *opaque, const uint8_t *buf, |
337 | int64_t pos, int size) | |
338 | { | |
339 | QEMUFileStdio *s = opaque; | |
7f79dd28 | 340 | fseek(s->stdio_file, pos, SEEK_SET); |
5fdb3aa1 | 341 | return fwrite(buf, 1, size, s->stdio_file); |
a672b469 AL |
342 | } |
343 | ||
344 | static int file_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) | |
345 | { | |
346 | QEMUFileStdio *s = opaque; | |
7f79dd28 PB |
347 | fseek(s->stdio_file, pos, SEEK_SET); |
348 | return fread(buf, 1, size, s->stdio_file); | |
a672b469 AL |
349 | } |
350 | ||
351 | QEMUFile *qemu_fopen(const char *filename, const char *mode) | |
352 | { | |
353 | QEMUFileStdio *s; | |
354 | ||
7f79dd28 PB |
355 | if (mode == NULL || |
356 | (mode[0] != 'r' && mode[0] != 'w') || | |
357 | mode[1] != 'b' || mode[2] != 0) { | |
090414a3 | 358 | fprintf(stderr, "qemu_fopen: Argument validity check failed\n"); |
7f79dd28 PB |
359 | return NULL; |
360 | } | |
361 | ||
a672b469 | 362 | s = qemu_mallocz(sizeof(QEMUFileStdio)); |
a672b469 | 363 | |
7f79dd28 PB |
364 | s->stdio_file = fopen(filename, mode); |
365 | if (!s->stdio_file) | |
a672b469 | 366 | goto fail; |
c163b5ca | 367 | |
7f79dd28 | 368 | if(mode[0] == 'w') { |
c163b5ca | 369 | s->file = qemu_fopen_ops(s, file_put_buffer, NULL, stdio_fclose, |
370 | NULL, NULL, NULL); | |
7f79dd28 | 371 | } else { |
c163b5ca | 372 | s->file = qemu_fopen_ops(s, NULL, file_get_buffer, stdio_fclose, |
373 | NULL, NULL, NULL); | |
7f79dd28 PB |
374 | } |
375 | return s->file; | |
a672b469 | 376 | fail: |
a672b469 AL |
377 | qemu_free(s); |
378 | return NULL; | |
379 | } | |
380 | ||
178e08a5 | 381 | static int block_put_buffer(void *opaque, const uint8_t *buf, |
a672b469 AL |
382 | int64_t pos, int size) |
383 | { | |
45566e9c | 384 | bdrv_save_vmstate(opaque, buf, pos, size); |
a672b469 AL |
385 | return size; |
386 | } | |
387 | ||
178e08a5 | 388 | static int block_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) |
a672b469 | 389 | { |
45566e9c | 390 | return bdrv_load_vmstate(opaque, buf, pos, size); |
a672b469 AL |
391 | } |
392 | ||
393 | static int bdrv_fclose(void *opaque) | |
394 | { | |
a672b469 AL |
395 | return 0; |
396 | } | |
397 | ||
45566e9c | 398 | static QEMUFile *qemu_fopen_bdrv(BlockDriverState *bs, int is_writable) |
a672b469 | 399 | { |
a672b469 | 400 | if (is_writable) |
c163b5ca | 401 | return qemu_fopen_ops(bs, block_put_buffer, NULL, bdrv_fclose, |
402 | NULL, NULL, NULL); | |
403 | return qemu_fopen_ops(bs, NULL, block_get_buffer, bdrv_fclose, NULL, NULL, NULL); | |
a672b469 AL |
404 | } |
405 | ||
406 | QEMUFile *qemu_fopen_ops(void *opaque, QEMUFilePutBufferFunc *put_buffer, | |
407 | QEMUFileGetBufferFunc *get_buffer, | |
408 | QEMUFileCloseFunc *close, | |
19629537 | 409 | QEMUFileRateLimit *rate_limit, |
c163b5ca | 410 | QEMUFileSetRateLimit *set_rate_limit, |
411 | QEMUFileGetRateLimit *get_rate_limit) | |
a672b469 AL |
412 | { |
413 | QEMUFile *f; | |
414 | ||
415 | f = qemu_mallocz(sizeof(QEMUFile)); | |
a672b469 AL |
416 | |
417 | f->opaque = opaque; | |
418 | f->put_buffer = put_buffer; | |
419 | f->get_buffer = get_buffer; | |
420 | f->close = close; | |
421 | f->rate_limit = rate_limit; | |
19629537 | 422 | f->set_rate_limit = set_rate_limit; |
c163b5ca | 423 | f->get_rate_limit = get_rate_limit; |
a672b469 AL |
424 | f->is_write = 0; |
425 | ||
426 | return f; | |
427 | } | |
428 | ||
429 | int qemu_file_has_error(QEMUFile *f) | |
430 | { | |
431 | return f->has_error; | |
432 | } | |
433 | ||
4dabe248 AL |
434 | void qemu_file_set_error(QEMUFile *f) |
435 | { | |
436 | f->has_error = 1; | |
437 | } | |
438 | ||
a672b469 AL |
439 | void qemu_fflush(QEMUFile *f) |
440 | { | |
441 | if (!f->put_buffer) | |
442 | return; | |
443 | ||
444 | if (f->is_write && f->buf_index > 0) { | |
445 | int len; | |
446 | ||
447 | len = f->put_buffer(f->opaque, f->buf, f->buf_offset, f->buf_index); | |
448 | if (len > 0) | |
449 | f->buf_offset += f->buf_index; | |
450 | else | |
451 | f->has_error = 1; | |
452 | f->buf_index = 0; | |
453 | } | |
454 | } | |
455 | ||
456 | static void qemu_fill_buffer(QEMUFile *f) | |
457 | { | |
458 | int len; | |
459 | ||
460 | if (!f->get_buffer) | |
461 | return; | |
462 | ||
463 | if (f->is_write) | |
464 | abort(); | |
465 | ||
466 | len = f->get_buffer(f->opaque, f->buf, f->buf_offset, IO_BUF_SIZE); | |
467 | if (len > 0) { | |
468 | f->buf_index = 0; | |
469 | f->buf_size = len; | |
470 | f->buf_offset += len; | |
471 | } else if (len != -EAGAIN) | |
472 | f->has_error = 1; | |
473 | } | |
474 | ||
475 | int qemu_fclose(QEMUFile *f) | |
476 | { | |
477 | int ret = 0; | |
478 | qemu_fflush(f); | |
479 | if (f->close) | |
480 | ret = f->close(f->opaque); | |
481 | qemu_free(f); | |
482 | return ret; | |
483 | } | |
484 | ||
485 | void qemu_file_put_notify(QEMUFile *f) | |
486 | { | |
487 | f->put_buffer(f->opaque, NULL, 0, 0); | |
488 | } | |
489 | ||
490 | void qemu_put_buffer(QEMUFile *f, const uint8_t *buf, int size) | |
491 | { | |
492 | int l; | |
493 | ||
494 | if (!f->has_error && f->is_write == 0 && f->buf_index > 0) { | |
495 | fprintf(stderr, | |
496 | "Attempted to write to buffer while read buffer is not empty\n"); | |
497 | abort(); | |
498 | } | |
499 | ||
500 | while (!f->has_error && size > 0) { | |
501 | l = IO_BUF_SIZE - f->buf_index; | |
502 | if (l > size) | |
503 | l = size; | |
504 | memcpy(f->buf + f->buf_index, buf, l); | |
505 | f->is_write = 1; | |
506 | f->buf_index += l; | |
507 | buf += l; | |
508 | size -= l; | |
509 | if (f->buf_index >= IO_BUF_SIZE) | |
510 | qemu_fflush(f); | |
511 | } | |
512 | } | |
513 | ||
514 | void qemu_put_byte(QEMUFile *f, int v) | |
515 | { | |
516 | if (!f->has_error && f->is_write == 0 && f->buf_index > 0) { | |
517 | fprintf(stderr, | |
518 | "Attempted to write to buffer while read buffer is not empty\n"); | |
519 | abort(); | |
520 | } | |
521 | ||
522 | f->buf[f->buf_index++] = v; | |
523 | f->is_write = 1; | |
524 | if (f->buf_index >= IO_BUF_SIZE) | |
525 | qemu_fflush(f); | |
526 | } | |
527 | ||
528 | int qemu_get_buffer(QEMUFile *f, uint8_t *buf, int size1) | |
529 | { | |
530 | int size, l; | |
531 | ||
532 | if (f->is_write) | |
533 | abort(); | |
534 | ||
535 | size = size1; | |
536 | while (size > 0) { | |
537 | l = f->buf_size - f->buf_index; | |
538 | if (l == 0) { | |
539 | qemu_fill_buffer(f); | |
540 | l = f->buf_size - f->buf_index; | |
541 | if (l == 0) | |
542 | break; | |
543 | } | |
544 | if (l > size) | |
545 | l = size; | |
546 | memcpy(buf, f->buf + f->buf_index, l); | |
547 | f->buf_index += l; | |
548 | buf += l; | |
549 | size -= l; | |
550 | } | |
551 | return size1 - size; | |
552 | } | |
553 | ||
811814bd JQ |
554 | static int qemu_peek_byte(QEMUFile *f) |
555 | { | |
556 | if (f->is_write) | |
557 | abort(); | |
558 | ||
559 | if (f->buf_index >= f->buf_size) { | |
560 | qemu_fill_buffer(f); | |
561 | if (f->buf_index >= f->buf_size) | |
562 | return 0; | |
563 | } | |
564 | return f->buf[f->buf_index]; | |
565 | } | |
566 | ||
a672b469 AL |
567 | int qemu_get_byte(QEMUFile *f) |
568 | { | |
569 | if (f->is_write) | |
570 | abort(); | |
571 | ||
572 | if (f->buf_index >= f->buf_size) { | |
573 | qemu_fill_buffer(f); | |
574 | if (f->buf_index >= f->buf_size) | |
575 | return 0; | |
576 | } | |
577 | return f->buf[f->buf_index++]; | |
578 | } | |
579 | ||
580 | int64_t qemu_ftell(QEMUFile *f) | |
581 | { | |
582 | return f->buf_offset - f->buf_size + f->buf_index; | |
583 | } | |
584 | ||
585 | int64_t qemu_fseek(QEMUFile *f, int64_t pos, int whence) | |
586 | { | |
587 | if (whence == SEEK_SET) { | |
588 | /* nothing to do */ | |
589 | } else if (whence == SEEK_CUR) { | |
590 | pos += qemu_ftell(f); | |
591 | } else { | |
592 | /* SEEK_END not supported */ | |
593 | return -1; | |
594 | } | |
595 | if (f->put_buffer) { | |
596 | qemu_fflush(f); | |
597 | f->buf_offset = pos; | |
598 | } else { | |
599 | f->buf_offset = pos; | |
600 | f->buf_index = 0; | |
601 | f->buf_size = 0; | |
602 | } | |
603 | return pos; | |
604 | } | |
605 | ||
606 | int qemu_file_rate_limit(QEMUFile *f) | |
607 | { | |
608 | if (f->rate_limit) | |
609 | return f->rate_limit(f->opaque); | |
610 | ||
611 | return 0; | |
612 | } | |
613 | ||
c163b5ca | 614 | size_t qemu_file_get_rate_limit(QEMUFile *f) |
615 | { | |
616 | if (f->get_rate_limit) | |
617 | return f->get_rate_limit(f->opaque); | |
618 | ||
619 | return 0; | |
620 | } | |
621 | ||
19629537 GC |
622 | size_t qemu_file_set_rate_limit(QEMUFile *f, size_t new_rate) |
623 | { | |
0bb05eaf GC |
624 | /* any failed or completed migration keeps its state to allow probing of |
625 | * migration data, but has no associated file anymore */ | |
626 | if (f && f->set_rate_limit) | |
19629537 GC |
627 | return f->set_rate_limit(f->opaque, new_rate); |
628 | ||
629 | return 0; | |
630 | } | |
631 | ||
a672b469 AL |
632 | void qemu_put_be16(QEMUFile *f, unsigned int v) |
633 | { | |
634 | qemu_put_byte(f, v >> 8); | |
635 | qemu_put_byte(f, v); | |
636 | } | |
637 | ||
638 | void qemu_put_be32(QEMUFile *f, unsigned int v) | |
639 | { | |
640 | qemu_put_byte(f, v >> 24); | |
641 | qemu_put_byte(f, v >> 16); | |
642 | qemu_put_byte(f, v >> 8); | |
643 | qemu_put_byte(f, v); | |
644 | } | |
645 | ||
646 | void qemu_put_be64(QEMUFile *f, uint64_t v) | |
647 | { | |
648 | qemu_put_be32(f, v >> 32); | |
649 | qemu_put_be32(f, v); | |
650 | } | |
651 | ||
652 | unsigned int qemu_get_be16(QEMUFile *f) | |
653 | { | |
654 | unsigned int v; | |
655 | v = qemu_get_byte(f) << 8; | |
656 | v |= qemu_get_byte(f); | |
657 | return v; | |
658 | } | |
659 | ||
660 | unsigned int qemu_get_be32(QEMUFile *f) | |
661 | { | |
662 | unsigned int v; | |
663 | v = qemu_get_byte(f) << 24; | |
664 | v |= qemu_get_byte(f) << 16; | |
665 | v |= qemu_get_byte(f) << 8; | |
666 | v |= qemu_get_byte(f); | |
667 | return v; | |
668 | } | |
669 | ||
670 | uint64_t qemu_get_be64(QEMUFile *f) | |
671 | { | |
672 | uint64_t v; | |
673 | v = (uint64_t)qemu_get_be32(f) << 32; | |
674 | v |= qemu_get_be32(f); | |
675 | return v; | |
676 | } | |
677 | ||
9ed7d6ae JQ |
678 | /* 8 bit int */ |
679 | ||
680 | static int get_int8(QEMUFile *f, void *pv, size_t size) | |
681 | { | |
682 | int8_t *v = pv; | |
683 | qemu_get_s8s(f, v); | |
684 | return 0; | |
685 | } | |
686 | ||
84e2e3eb | 687 | static void put_int8(QEMUFile *f, void *pv, size_t size) |
9ed7d6ae | 688 | { |
84e2e3eb | 689 | int8_t *v = pv; |
9ed7d6ae JQ |
690 | qemu_put_s8s(f, v); |
691 | } | |
692 | ||
693 | const VMStateInfo vmstate_info_int8 = { | |
694 | .name = "int8", | |
695 | .get = get_int8, | |
696 | .put = put_int8, | |
697 | }; | |
698 | ||
699 | /* 16 bit int */ | |
700 | ||
701 | static int get_int16(QEMUFile *f, void *pv, size_t size) | |
702 | { | |
703 | int16_t *v = pv; | |
704 | qemu_get_sbe16s(f, v); | |
705 | return 0; | |
706 | } | |
707 | ||
84e2e3eb | 708 | static void put_int16(QEMUFile *f, void *pv, size_t size) |
9ed7d6ae | 709 | { |
84e2e3eb | 710 | int16_t *v = pv; |
9ed7d6ae JQ |
711 | qemu_put_sbe16s(f, v); |
712 | } | |
713 | ||
714 | const VMStateInfo vmstate_info_int16 = { | |
715 | .name = "int16", | |
716 | .get = get_int16, | |
717 | .put = put_int16, | |
718 | }; | |
719 | ||
720 | /* 32 bit int */ | |
721 | ||
722 | static int get_int32(QEMUFile *f, void *pv, size_t size) | |
723 | { | |
724 | int32_t *v = pv; | |
725 | qemu_get_sbe32s(f, v); | |
726 | return 0; | |
727 | } | |
728 | ||
84e2e3eb | 729 | static void put_int32(QEMUFile *f, void *pv, size_t size) |
9ed7d6ae | 730 | { |
84e2e3eb | 731 | int32_t *v = pv; |
9ed7d6ae JQ |
732 | qemu_put_sbe32s(f, v); |
733 | } | |
734 | ||
735 | const VMStateInfo vmstate_info_int32 = { | |
736 | .name = "int32", | |
737 | .get = get_int32, | |
738 | .put = put_int32, | |
739 | }; | |
740 | ||
82501660 JQ |
741 | /* 32 bit int. See that the received value is the same than the one |
742 | in the field */ | |
743 | ||
744 | static int get_int32_equal(QEMUFile *f, void *pv, size_t size) | |
745 | { | |
746 | int32_t *v = pv; | |
747 | int32_t v2; | |
748 | qemu_get_sbe32s(f, &v2); | |
749 | ||
750 | if (*v == v2) | |
751 | return 0; | |
752 | return -EINVAL; | |
753 | } | |
754 | ||
755 | const VMStateInfo vmstate_info_int32_equal = { | |
756 | .name = "int32 equal", | |
757 | .get = get_int32_equal, | |
758 | .put = put_int32, | |
759 | }; | |
760 | ||
0a031e0a JQ |
761 | /* 32 bit int. See that the received value is the less or the same |
762 | than the one in the field */ | |
763 | ||
764 | static int get_int32_le(QEMUFile *f, void *pv, size_t size) | |
765 | { | |
766 | int32_t *old = pv; | |
767 | int32_t new; | |
768 | qemu_get_sbe32s(f, &new); | |
769 | ||
770 | if (*old <= new) | |
771 | return 0; | |
772 | return -EINVAL; | |
773 | } | |
774 | ||
775 | const VMStateInfo vmstate_info_int32_le = { | |
776 | .name = "int32 equal", | |
777 | .get = get_int32_le, | |
778 | .put = put_int32, | |
779 | }; | |
780 | ||
9ed7d6ae JQ |
781 | /* 64 bit int */ |
782 | ||
783 | static int get_int64(QEMUFile *f, void *pv, size_t size) | |
784 | { | |
785 | int64_t *v = pv; | |
786 | qemu_get_sbe64s(f, v); | |
787 | return 0; | |
788 | } | |
789 | ||
84e2e3eb | 790 | static void put_int64(QEMUFile *f, void *pv, size_t size) |
9ed7d6ae | 791 | { |
84e2e3eb | 792 | int64_t *v = pv; |
9ed7d6ae JQ |
793 | qemu_put_sbe64s(f, v); |
794 | } | |
795 | ||
796 | const VMStateInfo vmstate_info_int64 = { | |
797 | .name = "int64", | |
798 | .get = get_int64, | |
799 | .put = put_int64, | |
800 | }; | |
801 | ||
802 | /* 8 bit unsigned int */ | |
803 | ||
804 | static int get_uint8(QEMUFile *f, void *pv, size_t size) | |
805 | { | |
806 | uint8_t *v = pv; | |
807 | qemu_get_8s(f, v); | |
808 | return 0; | |
809 | } | |
810 | ||
84e2e3eb | 811 | static void put_uint8(QEMUFile *f, void *pv, size_t size) |
9ed7d6ae | 812 | { |
84e2e3eb | 813 | uint8_t *v = pv; |
9ed7d6ae JQ |
814 | qemu_put_8s(f, v); |
815 | } | |
816 | ||
817 | const VMStateInfo vmstate_info_uint8 = { | |
818 | .name = "uint8", | |
819 | .get = get_uint8, | |
820 | .put = put_uint8, | |
821 | }; | |
822 | ||
823 | /* 16 bit unsigned int */ | |
824 | ||
825 | static int get_uint16(QEMUFile *f, void *pv, size_t size) | |
826 | { | |
827 | uint16_t *v = pv; | |
828 | qemu_get_be16s(f, v); | |
829 | return 0; | |
830 | } | |
831 | ||
84e2e3eb | 832 | static void put_uint16(QEMUFile *f, void *pv, size_t size) |
9ed7d6ae | 833 | { |
84e2e3eb | 834 | uint16_t *v = pv; |
9ed7d6ae JQ |
835 | qemu_put_be16s(f, v); |
836 | } | |
837 | ||
838 | const VMStateInfo vmstate_info_uint16 = { | |
839 | .name = "uint16", | |
840 | .get = get_uint16, | |
841 | .put = put_uint16, | |
842 | }; | |
843 | ||
844 | /* 32 bit unsigned int */ | |
845 | ||
846 | static int get_uint32(QEMUFile *f, void *pv, size_t size) | |
847 | { | |
848 | uint32_t *v = pv; | |
849 | qemu_get_be32s(f, v); | |
850 | return 0; | |
851 | } | |
852 | ||
84e2e3eb | 853 | static void put_uint32(QEMUFile *f, void *pv, size_t size) |
9ed7d6ae | 854 | { |
84e2e3eb | 855 | uint32_t *v = pv; |
9ed7d6ae JQ |
856 | qemu_put_be32s(f, v); |
857 | } | |
858 | ||
859 | const VMStateInfo vmstate_info_uint32 = { | |
860 | .name = "uint32", | |
861 | .get = get_uint32, | |
862 | .put = put_uint32, | |
863 | }; | |
864 | ||
865 | /* 64 bit unsigned int */ | |
866 | ||
867 | static int get_uint64(QEMUFile *f, void *pv, size_t size) | |
868 | { | |
869 | uint64_t *v = pv; | |
870 | qemu_get_be64s(f, v); | |
871 | return 0; | |
872 | } | |
873 | ||
84e2e3eb | 874 | static void put_uint64(QEMUFile *f, void *pv, size_t size) |
9ed7d6ae | 875 | { |
84e2e3eb | 876 | uint64_t *v = pv; |
9ed7d6ae JQ |
877 | qemu_put_be64s(f, v); |
878 | } | |
879 | ||
880 | const VMStateInfo vmstate_info_uint64 = { | |
881 | .name = "uint64", | |
882 | .get = get_uint64, | |
883 | .put = put_uint64, | |
884 | }; | |
885 | ||
80cd83e7 JQ |
886 | /* 8 bit int. See that the received value is the same than the one |
887 | in the field */ | |
888 | ||
889 | static int get_uint8_equal(QEMUFile *f, void *pv, size_t size) | |
890 | { | |
891 | uint8_t *v = pv; | |
892 | uint8_t v2; | |
893 | qemu_get_8s(f, &v2); | |
894 | ||
895 | if (*v == v2) | |
896 | return 0; | |
897 | return -EINVAL; | |
898 | } | |
899 | ||
900 | const VMStateInfo vmstate_info_uint8_equal = { | |
aa1cce69 | 901 | .name = "uint8 equal", |
80cd83e7 JQ |
902 | .get = get_uint8_equal, |
903 | .put = put_uint8, | |
904 | }; | |
905 | ||
dc3b83a0 JQ |
906 | /* 16 bit unsigned int int. See that the received value is the same than the one |
907 | in the field */ | |
908 | ||
909 | static int get_uint16_equal(QEMUFile *f, void *pv, size_t size) | |
910 | { | |
911 | uint16_t *v = pv; | |
912 | uint16_t v2; | |
913 | qemu_get_be16s(f, &v2); | |
914 | ||
915 | if (*v == v2) | |
916 | return 0; | |
917 | return -EINVAL; | |
918 | } | |
919 | ||
920 | const VMStateInfo vmstate_info_uint16_equal = { | |
921 | .name = "uint16 equal", | |
922 | .get = get_uint16_equal, | |
923 | .put = put_uint16, | |
924 | }; | |
925 | ||
dde0463b JQ |
926 | /* timers */ |
927 | ||
928 | static int get_timer(QEMUFile *f, void *pv, size_t size) | |
929 | { | |
930 | QEMUTimer *v = pv; | |
931 | qemu_get_timer(f, v); | |
932 | return 0; | |
933 | } | |
934 | ||
84e2e3eb | 935 | static void put_timer(QEMUFile *f, void *pv, size_t size) |
dde0463b | 936 | { |
84e2e3eb | 937 | QEMUTimer *v = pv; |
dde0463b JQ |
938 | qemu_put_timer(f, v); |
939 | } | |
940 | ||
941 | const VMStateInfo vmstate_info_timer = { | |
942 | .name = "timer", | |
943 | .get = get_timer, | |
944 | .put = put_timer, | |
945 | }; | |
946 | ||
6f67c50f JQ |
947 | /* uint8_t buffers */ |
948 | ||
949 | static int get_buffer(QEMUFile *f, void *pv, size_t size) | |
950 | { | |
951 | uint8_t *v = pv; | |
952 | qemu_get_buffer(f, v, size); | |
953 | return 0; | |
954 | } | |
955 | ||
84e2e3eb | 956 | static void put_buffer(QEMUFile *f, void *pv, size_t size) |
6f67c50f | 957 | { |
84e2e3eb | 958 | uint8_t *v = pv; |
6f67c50f JQ |
959 | qemu_put_buffer(f, v, size); |
960 | } | |
961 | ||
962 | const VMStateInfo vmstate_info_buffer = { | |
963 | .name = "buffer", | |
964 | .get = get_buffer, | |
965 | .put = put_buffer, | |
966 | }; | |
967 | ||
76507c75 JQ |
968 | /* unused buffers: space that was used for some fields that are |
969 | not usefull anymore */ | |
970 | ||
971 | static int get_unused_buffer(QEMUFile *f, void *pv, size_t size) | |
972 | { | |
21174c34 JK |
973 | uint8_t buf[1024]; |
974 | int block_len; | |
975 | ||
976 | while (size > 0) { | |
977 | block_len = MIN(sizeof(buf), size); | |
978 | size -= block_len; | |
979 | qemu_get_buffer(f, buf, block_len); | |
980 | } | |
981 | return 0; | |
76507c75 JQ |
982 | } |
983 | ||
984 | static void put_unused_buffer(QEMUFile *f, void *pv, size_t size) | |
985 | { | |
21174c34 JK |
986 | static const uint8_t buf[1024]; |
987 | int block_len; | |
988 | ||
989 | while (size > 0) { | |
990 | block_len = MIN(sizeof(buf), size); | |
991 | size -= block_len; | |
992 | qemu_put_buffer(f, buf, block_len); | |
993 | } | |
76507c75 JQ |
994 | } |
995 | ||
996 | const VMStateInfo vmstate_info_unused_buffer = { | |
997 | .name = "unused_buffer", | |
998 | .get = get_unused_buffer, | |
999 | .put = put_unused_buffer, | |
1000 | }; | |
1001 | ||
7685ee6a AW |
1002 | typedef struct CompatEntry { |
1003 | char idstr[256]; | |
1004 | int instance_id; | |
1005 | } CompatEntry; | |
1006 | ||
a672b469 | 1007 | typedef struct SaveStateEntry { |
72cf2d4f | 1008 | QTAILQ_ENTRY(SaveStateEntry) entry; |
a672b469 AL |
1009 | char idstr[256]; |
1010 | int instance_id; | |
4d2ffa08 | 1011 | int alias_id; |
a672b469 AL |
1012 | int version_id; |
1013 | int section_id; | |
c163b5ca | 1014 | SaveSetParamsHandler *set_params; |
a672b469 AL |
1015 | SaveLiveStateHandler *save_live_state; |
1016 | SaveStateHandler *save_state; | |
1017 | LoadStateHandler *load_state; | |
9ed7d6ae | 1018 | const VMStateDescription *vmsd; |
a672b469 | 1019 | void *opaque; |
7685ee6a | 1020 | CompatEntry *compat; |
a672b469 AL |
1021 | } SaveStateEntry; |
1022 | ||
c163b5ca | 1023 | |
72cf2d4f BS |
1024 | static QTAILQ_HEAD(savevm_handlers, SaveStateEntry) savevm_handlers = |
1025 | QTAILQ_HEAD_INITIALIZER(savevm_handlers); | |
9ed7d6ae | 1026 | static int global_section_id; |
a672b469 | 1027 | |
8718e999 JQ |
1028 | static int calculate_new_instance_id(const char *idstr) |
1029 | { | |
1030 | SaveStateEntry *se; | |
1031 | int instance_id = 0; | |
1032 | ||
72cf2d4f | 1033 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
8718e999 JQ |
1034 | if (strcmp(idstr, se->idstr) == 0 |
1035 | && instance_id <= se->instance_id) { | |
1036 | instance_id = se->instance_id + 1; | |
1037 | } | |
1038 | } | |
1039 | return instance_id; | |
1040 | } | |
1041 | ||
7685ee6a AW |
1042 | static int calculate_compat_instance_id(const char *idstr) |
1043 | { | |
1044 | SaveStateEntry *se; | |
1045 | int instance_id = 0; | |
1046 | ||
1047 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { | |
1048 | if (!se->compat) | |
1049 | continue; | |
1050 | ||
1051 | if (strcmp(idstr, se->compat->idstr) == 0 | |
1052 | && instance_id <= se->compat->instance_id) { | |
1053 | instance_id = se->compat->instance_id + 1; | |
1054 | } | |
1055 | } | |
1056 | return instance_id; | |
1057 | } | |
1058 | ||
a672b469 AL |
1059 | /* TODO: Individual devices generally have very little idea about the rest |
1060 | of the system, so instance_id should be removed/replaced. | |
1061 | Meanwhile pass -1 as instance_id if you do not already have a clearly | |
1062 | distinguishing id for all instances of your device class. */ | |
0be71e32 AW |
1063 | int register_savevm_live(DeviceState *dev, |
1064 | const char *idstr, | |
a672b469 AL |
1065 | int instance_id, |
1066 | int version_id, | |
c163b5ca | 1067 | SaveSetParamsHandler *set_params, |
a672b469 AL |
1068 | SaveLiveStateHandler *save_live_state, |
1069 | SaveStateHandler *save_state, | |
1070 | LoadStateHandler *load_state, | |
1071 | void *opaque) | |
1072 | { | |
8718e999 | 1073 | SaveStateEntry *se; |
a672b469 | 1074 | |
c163b5ca | 1075 | se = qemu_mallocz(sizeof(SaveStateEntry)); |
a672b469 AL |
1076 | se->version_id = version_id; |
1077 | se->section_id = global_section_id++; | |
c163b5ca | 1078 | se->set_params = set_params; |
a672b469 AL |
1079 | se->save_live_state = save_live_state; |
1080 | se->save_state = save_state; | |
1081 | se->load_state = load_state; | |
1082 | se->opaque = opaque; | |
9ed7d6ae | 1083 | se->vmsd = NULL; |
a672b469 | 1084 | |
7685ee6a AW |
1085 | if (dev && dev->parent_bus && dev->parent_bus->info->get_dev_path) { |
1086 | char *id = dev->parent_bus->info->get_dev_path(dev); | |
1087 | if (id) { | |
1088 | pstrcpy(se->idstr, sizeof(se->idstr), id); | |
1089 | pstrcat(se->idstr, sizeof(se->idstr), "/"); | |
1090 | qemu_free(id); | |
1091 | ||
1092 | se->compat = qemu_mallocz(sizeof(CompatEntry)); | |
1093 | pstrcpy(se->compat->idstr, sizeof(se->compat->idstr), idstr); | |
1094 | se->compat->instance_id = instance_id == -1 ? | |
1095 | calculate_compat_instance_id(idstr) : instance_id; | |
1096 | instance_id = -1; | |
1097 | } | |
1098 | } | |
1099 | pstrcat(se->idstr, sizeof(se->idstr), idstr); | |
1100 | ||
8718e999 | 1101 | if (instance_id == -1) { |
7685ee6a | 1102 | se->instance_id = calculate_new_instance_id(se->idstr); |
8718e999 JQ |
1103 | } else { |
1104 | se->instance_id = instance_id; | |
a672b469 | 1105 | } |
7685ee6a | 1106 | assert(!se->compat || se->instance_id == 0); |
8718e999 | 1107 | /* add at the end of list */ |
72cf2d4f | 1108 | QTAILQ_INSERT_TAIL(&savevm_handlers, se, entry); |
a672b469 AL |
1109 | return 0; |
1110 | } | |
1111 | ||
0be71e32 AW |
1112 | int register_savevm(DeviceState *dev, |
1113 | const char *idstr, | |
a672b469 AL |
1114 | int instance_id, |
1115 | int version_id, | |
1116 | SaveStateHandler *save_state, | |
1117 | LoadStateHandler *load_state, | |
1118 | void *opaque) | |
1119 | { | |
0be71e32 | 1120 | return register_savevm_live(dev, idstr, instance_id, version_id, |
c163b5ca | 1121 | NULL, NULL, save_state, load_state, opaque); |
a672b469 AL |
1122 | } |
1123 | ||
0be71e32 | 1124 | void unregister_savevm(DeviceState *dev, const char *idstr, void *opaque) |
41bd13af | 1125 | { |
8718e999 | 1126 | SaveStateEntry *se, *new_se; |
7685ee6a AW |
1127 | char id[256] = ""; |
1128 | ||
1129 | if (dev && dev->parent_bus && dev->parent_bus->info->get_dev_path) { | |
1130 | char *path = dev->parent_bus->info->get_dev_path(dev); | |
1131 | if (path) { | |
1132 | pstrcpy(id, sizeof(id), path); | |
1133 | pstrcat(id, sizeof(id), "/"); | |
1134 | qemu_free(path); | |
1135 | } | |
1136 | } | |
1137 | pstrcat(id, sizeof(id), idstr); | |
41bd13af | 1138 | |
72cf2d4f | 1139 | QTAILQ_FOREACH_SAFE(se, &savevm_handlers, entry, new_se) { |
7685ee6a | 1140 | if (strcmp(se->idstr, id) == 0 && se->opaque == opaque) { |
72cf2d4f | 1141 | QTAILQ_REMOVE(&savevm_handlers, se, entry); |
8718e999 | 1142 | qemu_free(se); |
41bd13af | 1143 | } |
41bd13af AL |
1144 | } |
1145 | } | |
1146 | ||
0be71e32 | 1147 | int vmstate_register_with_alias_id(DeviceState *dev, int instance_id, |
4d2ffa08 JK |
1148 | const VMStateDescription *vmsd, |
1149 | void *opaque, int alias_id, | |
1150 | int required_for_version) | |
9ed7d6ae | 1151 | { |
8718e999 | 1152 | SaveStateEntry *se; |
9ed7d6ae | 1153 | |
4d2ffa08 JK |
1154 | /* If this triggers, alias support can be dropped for the vmsd. */ |
1155 | assert(alias_id == -1 || required_for_version >= vmsd->minimum_version_id); | |
1156 | ||
c163b5ca | 1157 | se = qemu_mallocz(sizeof(SaveStateEntry)); |
9ed7d6ae JQ |
1158 | se->version_id = vmsd->version_id; |
1159 | se->section_id = global_section_id++; | |
1160 | se->save_live_state = NULL; | |
1161 | se->save_state = NULL; | |
1162 | se->load_state = NULL; | |
1163 | se->opaque = opaque; | |
1164 | se->vmsd = vmsd; | |
4d2ffa08 | 1165 | se->alias_id = alias_id; |
9ed7d6ae | 1166 | |
7685ee6a AW |
1167 | if (dev && dev->parent_bus && dev->parent_bus->info->get_dev_path) { |
1168 | char *id = dev->parent_bus->info->get_dev_path(dev); | |
1169 | if (id) { | |
1170 | pstrcpy(se->idstr, sizeof(se->idstr), id); | |
1171 | pstrcat(se->idstr, sizeof(se->idstr), "/"); | |
1172 | qemu_free(id); | |
1173 | ||
1174 | se->compat = qemu_mallocz(sizeof(CompatEntry)); | |
1175 | pstrcpy(se->compat->idstr, sizeof(se->compat->idstr), vmsd->name); | |
1176 | se->compat->instance_id = instance_id == -1 ? | |
1177 | calculate_compat_instance_id(vmsd->name) : instance_id; | |
1178 | instance_id = -1; | |
1179 | } | |
1180 | } | |
1181 | pstrcat(se->idstr, sizeof(se->idstr), vmsd->name); | |
1182 | ||
8718e999 | 1183 | if (instance_id == -1) { |
7685ee6a | 1184 | se->instance_id = calculate_new_instance_id(se->idstr); |
8718e999 JQ |
1185 | } else { |
1186 | se->instance_id = instance_id; | |
9ed7d6ae | 1187 | } |
7685ee6a | 1188 | assert(!se->compat || se->instance_id == 0); |
8718e999 | 1189 | /* add at the end of list */ |
72cf2d4f | 1190 | QTAILQ_INSERT_TAIL(&savevm_handlers, se, entry); |
9ed7d6ae JQ |
1191 | return 0; |
1192 | } | |
1193 | ||
0be71e32 AW |
1194 | int vmstate_register(DeviceState *dev, int instance_id, |
1195 | const VMStateDescription *vmsd, void *opaque) | |
4d2ffa08 | 1196 | { |
0be71e32 AW |
1197 | return vmstate_register_with_alias_id(dev, instance_id, vmsd, |
1198 | opaque, -1, 0); | |
4d2ffa08 JK |
1199 | } |
1200 | ||
0be71e32 AW |
1201 | void vmstate_unregister(DeviceState *dev, const VMStateDescription *vmsd, |
1202 | void *opaque) | |
9ed7d6ae | 1203 | { |
1eb7538b JQ |
1204 | SaveStateEntry *se, *new_se; |
1205 | ||
72cf2d4f | 1206 | QTAILQ_FOREACH_SAFE(se, &savevm_handlers, entry, new_se) { |
1eb7538b | 1207 | if (se->vmsd == vmsd && se->opaque == opaque) { |
72cf2d4f | 1208 | QTAILQ_REMOVE(&savevm_handlers, se, entry); |
1eb7538b JQ |
1209 | qemu_free(se); |
1210 | } | |
1211 | } | |
9ed7d6ae JQ |
1212 | } |
1213 | ||
811814bd JQ |
1214 | static void vmstate_subsection_save(QEMUFile *f, const VMStateDescription *vmsd, |
1215 | void *opaque); | |
1216 | static int vmstate_subsection_load(QEMUFile *f, const VMStateDescription *vmsd, | |
1217 | void *opaque); | |
1218 | ||
9ed7d6ae JQ |
1219 | int vmstate_load_state(QEMUFile *f, const VMStateDescription *vmsd, |
1220 | void *opaque, int version_id) | |
1221 | { | |
1222 | VMStateField *field = vmsd->fields; | |
811814bd | 1223 | int ret; |
9ed7d6ae JQ |
1224 | |
1225 | if (version_id > vmsd->version_id) { | |
1226 | return -EINVAL; | |
1227 | } | |
1228 | if (version_id < vmsd->minimum_version_id_old) { | |
1229 | return -EINVAL; | |
1230 | } | |
1231 | if (version_id < vmsd->minimum_version_id) { | |
1232 | return vmsd->load_state_old(f, opaque, version_id); | |
1233 | } | |
fd4d52de JQ |
1234 | if (vmsd->pre_load) { |
1235 | int ret = vmsd->pre_load(opaque); | |
1236 | if (ret) | |
1237 | return ret; | |
1238 | } | |
9ed7d6ae | 1239 | while(field->name) { |
f11f6a5f JQ |
1240 | if ((field->field_exists && |
1241 | field->field_exists(opaque, version_id)) || | |
1242 | (!field->field_exists && | |
1243 | field->version_id <= version_id)) { | |
f752a6aa | 1244 | void *base_addr = opaque + field->offset; |
811814bd | 1245 | int i, n_elems = 1; |
e61a1e0a | 1246 | int size = field->size; |
9ed7d6ae | 1247 | |
e61a1e0a JQ |
1248 | if (field->flags & VMS_VBUFFER) { |
1249 | size = *(int32_t *)(opaque+field->size_offset); | |
33599e2a JQ |
1250 | if (field->flags & VMS_MULTIPLY) { |
1251 | size *= field->size; | |
1252 | } | |
e61a1e0a | 1253 | } |
f752a6aa JQ |
1254 | if (field->flags & VMS_ARRAY) { |
1255 | n_elems = field->num; | |
d6698281 JQ |
1256 | } else if (field->flags & VMS_VARRAY_INT32) { |
1257 | n_elems = *(int32_t *)(opaque+field->num_offset); | |
bdb4941d JQ |
1258 | } else if (field->flags & VMS_VARRAY_UINT16) { |
1259 | n_elems = *(uint16_t *)(opaque+field->num_offset); | |
f752a6aa | 1260 | } |
dde0463b | 1261 | if (field->flags & VMS_POINTER) { |
e61a1e0a | 1262 | base_addr = *(void **)base_addr + field->start; |
dde0463b | 1263 | } |
f752a6aa | 1264 | for (i = 0; i < n_elems; i++) { |
e61a1e0a | 1265 | void *addr = base_addr + size * i; |
ec245e21 | 1266 | |
19df438b JQ |
1267 | if (field->flags & VMS_ARRAY_OF_POINTER) { |
1268 | addr = *(void **)addr; | |
1269 | } | |
ec245e21 | 1270 | if (field->flags & VMS_STRUCT) { |
fa3aad24 | 1271 | ret = vmstate_load_state(f, field->vmsd, addr, field->vmsd->version_id); |
ec245e21 | 1272 | } else { |
e61a1e0a | 1273 | ret = field->info->get(f, addr, size); |
ec245e21 JQ |
1274 | |
1275 | } | |
f752a6aa JQ |
1276 | if (ret < 0) { |
1277 | return ret; | |
1278 | } | |
9ed7d6ae JQ |
1279 | } |
1280 | } | |
1281 | field++; | |
1282 | } | |
811814bd JQ |
1283 | ret = vmstate_subsection_load(f, vmsd, opaque); |
1284 | if (ret != 0) { | |
1285 | return ret; | |
1286 | } | |
752ff2fa | 1287 | if (vmsd->post_load) { |
e59fb374 | 1288 | return vmsd->post_load(opaque, version_id); |
752ff2fa | 1289 | } |
9ed7d6ae JQ |
1290 | return 0; |
1291 | } | |
1292 | ||
1293 | void vmstate_save_state(QEMUFile *f, const VMStateDescription *vmsd, | |
84e2e3eb | 1294 | void *opaque) |
9ed7d6ae JQ |
1295 | { |
1296 | VMStateField *field = vmsd->fields; | |
1297 | ||
8fb0791d JQ |
1298 | if (vmsd->pre_save) { |
1299 | vmsd->pre_save(opaque); | |
1300 | } | |
9ed7d6ae | 1301 | while(field->name) { |
f11f6a5f JQ |
1302 | if (!field->field_exists || |
1303 | field->field_exists(opaque, vmsd->version_id)) { | |
1304 | void *base_addr = opaque + field->offset; | |
1305 | int i, n_elems = 1; | |
e61a1e0a | 1306 | int size = field->size; |
dde0463b | 1307 | |
e61a1e0a JQ |
1308 | if (field->flags & VMS_VBUFFER) { |
1309 | size = *(int32_t *)(opaque+field->size_offset); | |
33599e2a JQ |
1310 | if (field->flags & VMS_MULTIPLY) { |
1311 | size *= field->size; | |
1312 | } | |
e61a1e0a | 1313 | } |
f11f6a5f JQ |
1314 | if (field->flags & VMS_ARRAY) { |
1315 | n_elems = field->num; | |
d6698281 JQ |
1316 | } else if (field->flags & VMS_VARRAY_INT32) { |
1317 | n_elems = *(int32_t *)(opaque+field->num_offset); | |
bdb4941d JQ |
1318 | } else if (field->flags & VMS_VARRAY_UINT16) { |
1319 | n_elems = *(uint16_t *)(opaque+field->num_offset); | |
f11f6a5f JQ |
1320 | } |
1321 | if (field->flags & VMS_POINTER) { | |
e61a1e0a | 1322 | base_addr = *(void **)base_addr + field->start; |
f11f6a5f JQ |
1323 | } |
1324 | for (i = 0; i < n_elems; i++) { | |
e61a1e0a | 1325 | void *addr = base_addr + size * i; |
ec245e21 | 1326 | |
8595387e JQ |
1327 | if (field->flags & VMS_ARRAY_OF_POINTER) { |
1328 | addr = *(void **)addr; | |
1329 | } | |
f11f6a5f JQ |
1330 | if (field->flags & VMS_STRUCT) { |
1331 | vmstate_save_state(f, field->vmsd, addr); | |
1332 | } else { | |
e61a1e0a | 1333 | field->info->put(f, addr, size); |
f11f6a5f | 1334 | } |
ec245e21 | 1335 | } |
dde0463b | 1336 | } |
9ed7d6ae JQ |
1337 | field++; |
1338 | } | |
811814bd | 1339 | vmstate_subsection_save(f, vmsd, opaque); |
9ed7d6ae JQ |
1340 | } |
1341 | ||
4082be4d JQ |
1342 | static int vmstate_load(QEMUFile *f, SaveStateEntry *se, int version_id) |
1343 | { | |
9ed7d6ae JQ |
1344 | if (!se->vmsd) { /* Old style */ |
1345 | return se->load_state(f, se->opaque, version_id); | |
1346 | } | |
1347 | return vmstate_load_state(f, se->vmsd, se->opaque, version_id); | |
4082be4d JQ |
1348 | } |
1349 | ||
1350 | static void vmstate_save(QEMUFile *f, SaveStateEntry *se) | |
1351 | { | |
9ed7d6ae JQ |
1352 | if (!se->vmsd) { /* Old style */ |
1353 | se->save_state(f, se->opaque); | |
1354 | return; | |
1355 | } | |
1356 | vmstate_save_state(f,se->vmsd, se->opaque); | |
4082be4d JQ |
1357 | } |
1358 | ||
a672b469 AL |
1359 | #define QEMU_VM_FILE_MAGIC 0x5145564d |
1360 | #define QEMU_VM_FILE_VERSION_COMPAT 0x00000002 | |
1361 | #define QEMU_VM_FILE_VERSION 0x00000003 | |
1362 | ||
1363 | #define QEMU_VM_EOF 0x00 | |
1364 | #define QEMU_VM_SECTION_START 0x01 | |
1365 | #define QEMU_VM_SECTION_PART 0x02 | |
1366 | #define QEMU_VM_SECTION_END 0x03 | |
1367 | #define QEMU_VM_SECTION_FULL 0x04 | |
811814bd | 1368 | #define QEMU_VM_SUBSECTION 0x05 |
a672b469 | 1369 | |
f327aa0c JK |
1370 | int qemu_savevm_state_begin(Monitor *mon, QEMUFile *f, int blk_enable, |
1371 | int shared) | |
a672b469 AL |
1372 | { |
1373 | SaveStateEntry *se; | |
1374 | ||
c163b5ca | 1375 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
1376 | if(se->set_params == NULL) { | |
1377 | continue; | |
1378 | } | |
1379 | se->set_params(blk_enable, shared, se->opaque); | |
1380 | } | |
1381 | ||
a672b469 AL |
1382 | qemu_put_be32(f, QEMU_VM_FILE_MAGIC); |
1383 | qemu_put_be32(f, QEMU_VM_FILE_VERSION); | |
1384 | ||
72cf2d4f | 1385 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
a672b469 AL |
1386 | int len; |
1387 | ||
1388 | if (se->save_live_state == NULL) | |
1389 | continue; | |
1390 | ||
1391 | /* Section type */ | |
1392 | qemu_put_byte(f, QEMU_VM_SECTION_START); | |
1393 | qemu_put_be32(f, se->section_id); | |
1394 | ||
1395 | /* ID string */ | |
1396 | len = strlen(se->idstr); | |
1397 | qemu_put_byte(f, len); | |
1398 | qemu_put_buffer(f, (uint8_t *)se->idstr, len); | |
1399 | ||
1400 | qemu_put_be32(f, se->instance_id); | |
1401 | qemu_put_be32(f, se->version_id); | |
1402 | ||
f327aa0c | 1403 | se->save_live_state(mon, f, QEMU_VM_SECTION_START, se->opaque); |
a672b469 AL |
1404 | } |
1405 | ||
4ec7fcc7 | 1406 | if (qemu_file_has_error(f)) { |
f327aa0c | 1407 | qemu_savevm_state_cancel(mon, f); |
a672b469 | 1408 | return -EIO; |
4ec7fcc7 | 1409 | } |
a672b469 AL |
1410 | |
1411 | return 0; | |
1412 | } | |
1413 | ||
f327aa0c | 1414 | int qemu_savevm_state_iterate(Monitor *mon, QEMUFile *f) |
a672b469 AL |
1415 | { |
1416 | SaveStateEntry *se; | |
1417 | int ret = 1; | |
1418 | ||
72cf2d4f | 1419 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
a672b469 AL |
1420 | if (se->save_live_state == NULL) |
1421 | continue; | |
1422 | ||
1423 | /* Section type */ | |
1424 | qemu_put_byte(f, QEMU_VM_SECTION_PART); | |
1425 | qemu_put_be32(f, se->section_id); | |
1426 | ||
90697be8 JK |
1427 | ret = se->save_live_state(mon, f, QEMU_VM_SECTION_PART, se->opaque); |
1428 | if (!ret) { | |
1429 | /* Do not proceed to the next vmstate before this one reported | |
1430 | completion of the current stage. This serializes the migration | |
1431 | and reduces the probability that a faster changing state is | |
1432 | synchronized over and over again. */ | |
1433 | break; | |
1434 | } | |
a672b469 AL |
1435 | } |
1436 | ||
1437 | if (ret) | |
1438 | return 1; | |
1439 | ||
4ec7fcc7 | 1440 | if (qemu_file_has_error(f)) { |
f327aa0c | 1441 | qemu_savevm_state_cancel(mon, f); |
a672b469 | 1442 | return -EIO; |
4ec7fcc7 | 1443 | } |
a672b469 AL |
1444 | |
1445 | return 0; | |
1446 | } | |
1447 | ||
f327aa0c | 1448 | int qemu_savevm_state_complete(Monitor *mon, QEMUFile *f) |
a672b469 AL |
1449 | { |
1450 | SaveStateEntry *se; | |
1451 | ||
ea375f9a JK |
1452 | cpu_synchronize_all_states(); |
1453 | ||
72cf2d4f | 1454 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
a672b469 AL |
1455 | if (se->save_live_state == NULL) |
1456 | continue; | |
1457 | ||
1458 | /* Section type */ | |
1459 | qemu_put_byte(f, QEMU_VM_SECTION_END); | |
1460 | qemu_put_be32(f, se->section_id); | |
1461 | ||
f327aa0c | 1462 | se->save_live_state(mon, f, QEMU_VM_SECTION_END, se->opaque); |
a672b469 AL |
1463 | } |
1464 | ||
72cf2d4f | 1465 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
a672b469 AL |
1466 | int len; |
1467 | ||
9ed7d6ae | 1468 | if (se->save_state == NULL && se->vmsd == NULL) |
a672b469 AL |
1469 | continue; |
1470 | ||
1471 | /* Section type */ | |
1472 | qemu_put_byte(f, QEMU_VM_SECTION_FULL); | |
1473 | qemu_put_be32(f, se->section_id); | |
1474 | ||
1475 | /* ID string */ | |
1476 | len = strlen(se->idstr); | |
1477 | qemu_put_byte(f, len); | |
1478 | qemu_put_buffer(f, (uint8_t *)se->idstr, len); | |
1479 | ||
1480 | qemu_put_be32(f, se->instance_id); | |
1481 | qemu_put_be32(f, se->version_id); | |
1482 | ||
4082be4d | 1483 | vmstate_save(f, se); |
a672b469 AL |
1484 | } |
1485 | ||
1486 | qemu_put_byte(f, QEMU_VM_EOF); | |
1487 | ||
1488 | if (qemu_file_has_error(f)) | |
1489 | return -EIO; | |
1490 | ||
1491 | return 0; | |
1492 | } | |
1493 | ||
f327aa0c | 1494 | void qemu_savevm_state_cancel(Monitor *mon, QEMUFile *f) |
4ec7fcc7 JK |
1495 | { |
1496 | SaveStateEntry *se; | |
1497 | ||
1498 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { | |
1499 | if (se->save_live_state) { | |
f327aa0c | 1500 | se->save_live_state(mon, f, -1, se->opaque); |
4ec7fcc7 JK |
1501 | } |
1502 | } | |
1503 | } | |
1504 | ||
f327aa0c | 1505 | static int qemu_savevm_state(Monitor *mon, QEMUFile *f) |
a672b469 AL |
1506 | { |
1507 | int saved_vm_running; | |
1508 | int ret; | |
1509 | ||
1510 | saved_vm_running = vm_running; | |
1511 | vm_stop(0); | |
1512 | ||
1513 | bdrv_flush_all(); | |
1514 | ||
f327aa0c | 1515 | ret = qemu_savevm_state_begin(mon, f, 0, 0); |
a672b469 AL |
1516 | if (ret < 0) |
1517 | goto out; | |
1518 | ||
1519 | do { | |
f327aa0c | 1520 | ret = qemu_savevm_state_iterate(mon, f); |
a672b469 AL |
1521 | if (ret < 0) |
1522 | goto out; | |
1523 | } while (ret == 0); | |
1524 | ||
f327aa0c | 1525 | ret = qemu_savevm_state_complete(mon, f); |
a672b469 AL |
1526 | |
1527 | out: | |
1528 | if (qemu_file_has_error(f)) | |
1529 | ret = -EIO; | |
1530 | ||
1531 | if (!ret && saved_vm_running) | |
1532 | vm_start(); | |
1533 | ||
1534 | return ret; | |
1535 | } | |
1536 | ||
1537 | static SaveStateEntry *find_se(const char *idstr, int instance_id) | |
1538 | { | |
1539 | SaveStateEntry *se; | |
1540 | ||
72cf2d4f | 1541 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
a672b469 | 1542 | if (!strcmp(se->idstr, idstr) && |
4d2ffa08 JK |
1543 | (instance_id == se->instance_id || |
1544 | instance_id == se->alias_id)) | |
a672b469 | 1545 | return se; |
7685ee6a AW |
1546 | /* Migrating from an older version? */ |
1547 | if (strstr(se->idstr, idstr) && se->compat) { | |
1548 | if (!strcmp(se->compat->idstr, idstr) && | |
1549 | (instance_id == se->compat->instance_id || | |
1550 | instance_id == se->alias_id)) | |
1551 | return se; | |
1552 | } | |
a672b469 AL |
1553 | } |
1554 | return NULL; | |
1555 | } | |
1556 | ||
811814bd JQ |
1557 | static const VMStateDescription *vmstate_get_subsection(const VMStateSubsection *sub, char *idstr) |
1558 | { | |
1559 | while(sub && sub->needed) { | |
1560 | if (strcmp(idstr, sub->vmsd->name) == 0) { | |
1561 | return sub->vmsd; | |
1562 | } | |
1563 | sub++; | |
1564 | } | |
1565 | return NULL; | |
1566 | } | |
1567 | ||
1568 | static int vmstate_subsection_load(QEMUFile *f, const VMStateDescription *vmsd, | |
1569 | void *opaque) | |
1570 | { | |
1571 | while (qemu_peek_byte(f) == QEMU_VM_SUBSECTION) { | |
1572 | char idstr[256]; | |
1573 | int ret; | |
1574 | uint8_t version_id, subsection, len; | |
1575 | const VMStateDescription *sub_vmsd; | |
1576 | ||
1577 | subsection = qemu_get_byte(f); | |
1578 | len = qemu_get_byte(f); | |
1579 | qemu_get_buffer(f, (uint8_t *)idstr, len); | |
1580 | idstr[len] = 0; | |
1581 | version_id = qemu_get_be32(f); | |
1582 | ||
1583 | sub_vmsd = vmstate_get_subsection(vmsd->subsections, idstr); | |
1584 | if (sub_vmsd == NULL) { | |
1585 | return -ENOENT; | |
1586 | } | |
1587 | ret = vmstate_load_state(f, sub_vmsd, opaque, version_id); | |
1588 | if (ret) { | |
1589 | return ret; | |
1590 | } | |
1591 | } | |
1592 | return 0; | |
1593 | } | |
1594 | ||
1595 | static void vmstate_subsection_save(QEMUFile *f, const VMStateDescription *vmsd, | |
1596 | void *opaque) | |
1597 | { | |
1598 | const VMStateSubsection *sub = vmsd->subsections; | |
1599 | ||
1600 | while (sub && sub->needed) { | |
1601 | if (sub->needed(opaque)) { | |
1602 | const VMStateDescription *vmsd = sub->vmsd; | |
1603 | uint8_t len; | |
1604 | ||
1605 | qemu_put_byte(f, QEMU_VM_SUBSECTION); | |
1606 | len = strlen(vmsd->name); | |
1607 | qemu_put_byte(f, len); | |
1608 | qemu_put_buffer(f, (uint8_t *)vmsd->name, len); | |
1609 | qemu_put_be32(f, vmsd->version_id); | |
1610 | vmstate_save_state(f, vmsd, opaque); | |
1611 | } | |
1612 | sub++; | |
1613 | } | |
1614 | } | |
1615 | ||
a672b469 | 1616 | typedef struct LoadStateEntry { |
72cf2d4f | 1617 | QLIST_ENTRY(LoadStateEntry) entry; |
a672b469 AL |
1618 | SaveStateEntry *se; |
1619 | int section_id; | |
1620 | int version_id; | |
a672b469 AL |
1621 | } LoadStateEntry; |
1622 | ||
a672b469 AL |
1623 | int qemu_loadvm_state(QEMUFile *f) |
1624 | { | |
72cf2d4f BS |
1625 | QLIST_HEAD(, LoadStateEntry) loadvm_handlers = |
1626 | QLIST_HEAD_INITIALIZER(loadvm_handlers); | |
f4dbb8dd | 1627 | LoadStateEntry *le, *new_le; |
a672b469 AL |
1628 | uint8_t section_type; |
1629 | unsigned int v; | |
1630 | int ret; | |
1631 | ||
1632 | v = qemu_get_be32(f); | |
1633 | if (v != QEMU_VM_FILE_MAGIC) | |
1634 | return -EINVAL; | |
1635 | ||
1636 | v = qemu_get_be32(f); | |
bbfe1408 JQ |
1637 | if (v == QEMU_VM_FILE_VERSION_COMPAT) { |
1638 | fprintf(stderr, "SaveVM v2 format is obsolete and don't work anymore\n"); | |
1639 | return -ENOTSUP; | |
1640 | } | |
a672b469 AL |
1641 | if (v != QEMU_VM_FILE_VERSION) |
1642 | return -ENOTSUP; | |
1643 | ||
1644 | while ((section_type = qemu_get_byte(f)) != QEMU_VM_EOF) { | |
1645 | uint32_t instance_id, version_id, section_id; | |
a672b469 AL |
1646 | SaveStateEntry *se; |
1647 | char idstr[257]; | |
1648 | int len; | |
1649 | ||
1650 | switch (section_type) { | |
1651 | case QEMU_VM_SECTION_START: | |
1652 | case QEMU_VM_SECTION_FULL: | |
1653 | /* Read section start */ | |
1654 | section_id = qemu_get_be32(f); | |
1655 | len = qemu_get_byte(f); | |
1656 | qemu_get_buffer(f, (uint8_t *)idstr, len); | |
1657 | idstr[len] = 0; | |
1658 | instance_id = qemu_get_be32(f); | |
1659 | version_id = qemu_get_be32(f); | |
1660 | ||
1661 | /* Find savevm section */ | |
1662 | se = find_se(idstr, instance_id); | |
1663 | if (se == NULL) { | |
1664 | fprintf(stderr, "Unknown savevm section or instance '%s' %d\n", idstr, instance_id); | |
1665 | ret = -EINVAL; | |
1666 | goto out; | |
1667 | } | |
1668 | ||
1669 | /* Validate version */ | |
1670 | if (version_id > se->version_id) { | |
1671 | fprintf(stderr, "savevm: unsupported version %d for '%s' v%d\n", | |
1672 | version_id, idstr, se->version_id); | |
1673 | ret = -EINVAL; | |
1674 | goto out; | |
1675 | } | |
1676 | ||
1677 | /* Add entry */ | |
1678 | le = qemu_mallocz(sizeof(*le)); | |
a672b469 AL |
1679 | |
1680 | le->se = se; | |
1681 | le->section_id = section_id; | |
1682 | le->version_id = version_id; | |
72cf2d4f | 1683 | QLIST_INSERT_HEAD(&loadvm_handlers, le, entry); |
a672b469 | 1684 | |
4082be4d | 1685 | ret = vmstate_load(f, le->se, le->version_id); |
b5a22e4a JQ |
1686 | if (ret < 0) { |
1687 | fprintf(stderr, "qemu: warning: error while loading state for instance 0x%x of device '%s'\n", | |
1688 | instance_id, idstr); | |
1689 | goto out; | |
1690 | } | |
a672b469 AL |
1691 | break; |
1692 | case QEMU_VM_SECTION_PART: | |
1693 | case QEMU_VM_SECTION_END: | |
1694 | section_id = qemu_get_be32(f); | |
1695 | ||
72cf2d4f | 1696 | QLIST_FOREACH(le, &loadvm_handlers, entry) { |
f4dbb8dd JQ |
1697 | if (le->section_id == section_id) { |
1698 | break; | |
1699 | } | |
1700 | } | |
a672b469 AL |
1701 | if (le == NULL) { |
1702 | fprintf(stderr, "Unknown savevm section %d\n", section_id); | |
1703 | ret = -EINVAL; | |
1704 | goto out; | |
1705 | } | |
1706 | ||
4082be4d | 1707 | ret = vmstate_load(f, le->se, le->version_id); |
b5a22e4a JQ |
1708 | if (ret < 0) { |
1709 | fprintf(stderr, "qemu: warning: error while loading state section id %d\n", | |
1710 | section_id); | |
1711 | goto out; | |
1712 | } | |
a672b469 AL |
1713 | break; |
1714 | default: | |
1715 | fprintf(stderr, "Unknown savevm section type %d\n", section_type); | |
1716 | ret = -EINVAL; | |
1717 | goto out; | |
1718 | } | |
1719 | } | |
1720 | ||
ea375f9a JK |
1721 | cpu_synchronize_all_post_init(); |
1722 | ||
a672b469 AL |
1723 | ret = 0; |
1724 | ||
1725 | out: | |
72cf2d4f BS |
1726 | QLIST_FOREACH_SAFE(le, &loadvm_handlers, entry, new_le) { |
1727 | QLIST_REMOVE(le, entry); | |
a672b469 AL |
1728 | qemu_free(le); |
1729 | } | |
1730 | ||
1731 | if (qemu_file_has_error(f)) | |
1732 | ret = -EIO; | |
1733 | ||
1734 | return ret; | |
1735 | } | |
1736 | ||
a672b469 AL |
1737 | static int bdrv_snapshot_find(BlockDriverState *bs, QEMUSnapshotInfo *sn_info, |
1738 | const char *name) | |
1739 | { | |
1740 | QEMUSnapshotInfo *sn_tab, *sn; | |
1741 | int nb_sns, i, ret; | |
1742 | ||
1743 | ret = -ENOENT; | |
1744 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
1745 | if (nb_sns < 0) | |
1746 | return ret; | |
1747 | for(i = 0; i < nb_sns; i++) { | |
1748 | sn = &sn_tab[i]; | |
1749 | if (!strcmp(sn->id_str, name) || !strcmp(sn->name, name)) { | |
1750 | *sn_info = *sn; | |
1751 | ret = 0; | |
1752 | break; | |
1753 | } | |
1754 | } | |
1755 | qemu_free(sn_tab); | |
1756 | return ret; | |
1757 | } | |
1758 | ||
cb499fb2 KW |
1759 | /* |
1760 | * Deletes snapshots of a given name in all opened images. | |
1761 | */ | |
1762 | static int del_existing_snapshots(Monitor *mon, const char *name) | |
1763 | { | |
1764 | BlockDriverState *bs; | |
cb499fb2 KW |
1765 | QEMUSnapshotInfo sn1, *snapshot = &sn1; |
1766 | int ret; | |
1767 | ||
dbc13590 MA |
1768 | bs = NULL; |
1769 | while ((bs = bdrv_next(bs))) { | |
cb499fb2 KW |
1770 | if (bdrv_can_snapshot(bs) && |
1771 | bdrv_snapshot_find(bs, snapshot, name) >= 0) | |
1772 | { | |
1773 | ret = bdrv_snapshot_delete(bs, name); | |
1774 | if (ret < 0) { | |
1775 | monitor_printf(mon, | |
1776 | "Error while deleting snapshot on '%s'\n", | |
1777 | bdrv_get_device_name(bs)); | |
1778 | return -1; | |
1779 | } | |
1780 | } | |
1781 | } | |
1782 | ||
1783 | return 0; | |
1784 | } | |
1785 | ||
d54908a5 | 1786 | void do_savevm(Monitor *mon, const QDict *qdict) |
a672b469 AL |
1787 | { |
1788 | BlockDriverState *bs, *bs1; | |
1789 | QEMUSnapshotInfo sn1, *sn = &sn1, old_sn1, *old_sn = &old_sn1; | |
cb499fb2 | 1790 | int ret; |
a672b469 AL |
1791 | QEMUFile *f; |
1792 | int saved_vm_running; | |
2d22b18f | 1793 | uint32_t vm_state_size; |
a672b469 AL |
1794 | #ifdef _WIN32 |
1795 | struct _timeb tb; | |
1796 | #else | |
1797 | struct timeval tv; | |
1798 | #endif | |
d54908a5 | 1799 | const char *name = qdict_get_try_str(qdict, "name"); |
a672b469 | 1800 | |
feeee5ac | 1801 | /* Verify if there is a device that doesn't support snapshots and is writable */ |
dbc13590 MA |
1802 | bs = NULL; |
1803 | while ((bs = bdrv_next(bs))) { | |
feeee5ac MDCF |
1804 | |
1805 | if (bdrv_is_removable(bs) || bdrv_is_read_only(bs)) { | |
1806 | continue; | |
1807 | } | |
1808 | ||
1809 | if (!bdrv_can_snapshot(bs)) { | |
1810 | monitor_printf(mon, "Device '%s' is writable but does not support snapshots.\n", | |
1811 | bdrv_get_device_name(bs)); | |
1812 | return; | |
1813 | } | |
1814 | } | |
1815 | ||
f9092b10 | 1816 | bs = bdrv_snapshots(); |
a672b469 | 1817 | if (!bs) { |
376253ec | 1818 | monitor_printf(mon, "No block device can accept snapshots\n"); |
a672b469 AL |
1819 | return; |
1820 | } | |
a672b469 AL |
1821 | /* ??? Should this occur after vm_stop? */ |
1822 | qemu_aio_flush(); | |
1823 | ||
1824 | saved_vm_running = vm_running; | |
1825 | vm_stop(0); | |
1826 | ||
cb499fb2 | 1827 | memset(sn, 0, sizeof(*sn)); |
a672b469 AL |
1828 | if (name) { |
1829 | ret = bdrv_snapshot_find(bs, old_sn, name); | |
1830 | if (ret >= 0) { | |
cb499fb2 KW |
1831 | pstrcpy(sn->name, sizeof(sn->name), old_sn->name); |
1832 | pstrcpy(sn->id_str, sizeof(sn->id_str), old_sn->id_str); | |
1833 | } else { | |
a672b469 | 1834 | pstrcpy(sn->name, sizeof(sn->name), name); |
cb499fb2 | 1835 | } |
a672b469 AL |
1836 | } |
1837 | ||
1838 | /* fill auxiliary fields */ | |
1839 | #ifdef _WIN32 | |
1840 | _ftime(&tb); | |
1841 | sn->date_sec = tb.time; | |
1842 | sn->date_nsec = tb.millitm * 1000000; | |
1843 | #else | |
1844 | gettimeofday(&tv, NULL); | |
1845 | sn->date_sec = tv.tv_sec; | |
1846 | sn->date_nsec = tv.tv_usec * 1000; | |
1847 | #endif | |
1848 | sn->vm_clock_nsec = qemu_get_clock(vm_clock); | |
1849 | ||
cb499fb2 | 1850 | /* Delete old snapshots of the same name */ |
f139a412 | 1851 | if (name && del_existing_snapshots(mon, name) < 0) { |
cb499fb2 KW |
1852 | goto the_end; |
1853 | } | |
1854 | ||
a672b469 | 1855 | /* save the VM state */ |
45566e9c | 1856 | f = qemu_fopen_bdrv(bs, 1); |
a672b469 | 1857 | if (!f) { |
376253ec | 1858 | monitor_printf(mon, "Could not open VM state file\n"); |
a672b469 AL |
1859 | goto the_end; |
1860 | } | |
f327aa0c | 1861 | ret = qemu_savevm_state(mon, f); |
2d22b18f | 1862 | vm_state_size = qemu_ftell(f); |
a672b469 AL |
1863 | qemu_fclose(f); |
1864 | if (ret < 0) { | |
376253ec | 1865 | monitor_printf(mon, "Error %d while writing VM\n", ret); |
a672b469 AL |
1866 | goto the_end; |
1867 | } | |
1868 | ||
1869 | /* create the snapshots */ | |
1870 | ||
dbc13590 MA |
1871 | bs1 = NULL; |
1872 | while ((bs1 = bdrv_next(bs1))) { | |
feeee5ac | 1873 | if (bdrv_can_snapshot(bs1)) { |
2d22b18f AL |
1874 | /* Write VM state size only to the image that contains the state */ |
1875 | sn->vm_state_size = (bs == bs1 ? vm_state_size : 0); | |
a672b469 AL |
1876 | ret = bdrv_snapshot_create(bs1, sn); |
1877 | if (ret < 0) { | |
376253ec AL |
1878 | monitor_printf(mon, "Error while creating snapshot on '%s'\n", |
1879 | bdrv_get_device_name(bs1)); | |
a672b469 AL |
1880 | } |
1881 | } | |
1882 | } | |
1883 | ||
1884 | the_end: | |
1885 | if (saved_vm_running) | |
1886 | vm_start(); | |
1887 | } | |
1888 | ||
03cd4655 | 1889 | int load_vmstate(const char *name) |
a672b469 AL |
1890 | { |
1891 | BlockDriverState *bs, *bs1; | |
2d22b18f | 1892 | QEMUSnapshotInfo sn; |
a672b469 | 1893 | QEMUFile *f; |
751c6a17 | 1894 | int ret; |
a672b469 | 1895 | |
feeee5ac | 1896 | /* Verify if there is a device that doesn't support snapshots and is writable */ |
dbc13590 MA |
1897 | bs = NULL; |
1898 | while ((bs = bdrv_next(bs))) { | |
feeee5ac MDCF |
1899 | |
1900 | if (bdrv_is_removable(bs) || bdrv_is_read_only(bs)) { | |
1901 | continue; | |
1902 | } | |
1903 | ||
1904 | if (!bdrv_can_snapshot(bs)) { | |
1905 | error_report("Device '%s' is writable but does not support snapshots.", | |
1906 | bdrv_get_device_name(bs)); | |
1907 | return -ENOTSUP; | |
1908 | } | |
1909 | } | |
1910 | ||
f9092b10 | 1911 | bs = bdrv_snapshots(); |
a672b469 | 1912 | if (!bs) { |
1ecda02b | 1913 | error_report("No block device supports snapshots"); |
05f2401e | 1914 | return -EINVAL; |
a672b469 AL |
1915 | } |
1916 | ||
1917 | /* Flush all IO requests so they don't interfere with the new state. */ | |
1918 | qemu_aio_flush(); | |
1919 | ||
dbc13590 MA |
1920 | bs1 = NULL; |
1921 | while ((bs1 = bdrv_next(bs1))) { | |
feeee5ac | 1922 | if (bdrv_can_snapshot(bs1)) { |
a672b469 AL |
1923 | ret = bdrv_snapshot_goto(bs1, name); |
1924 | if (ret < 0) { | |
a672b469 AL |
1925 | switch(ret) { |
1926 | case -ENOTSUP: | |
1ecda02b MA |
1927 | error_report("%sSnapshots not supported on device '%s'", |
1928 | bs != bs1 ? "Warning: " : "", | |
1929 | bdrv_get_device_name(bs1)); | |
a672b469 AL |
1930 | break; |
1931 | case -ENOENT: | |
1ecda02b MA |
1932 | error_report("%sCould not find snapshot '%s' on device '%s'", |
1933 | bs != bs1 ? "Warning: " : "", | |
1934 | name, bdrv_get_device_name(bs1)); | |
a672b469 AL |
1935 | break; |
1936 | default: | |
1ecda02b MA |
1937 | error_report("%sError %d while activating snapshot on '%s'", |
1938 | bs != bs1 ? "Warning: " : "", | |
1939 | ret, bdrv_get_device_name(bs1)); | |
a672b469 AL |
1940 | break; |
1941 | } | |
1942 | /* fatal on snapshot block device */ | |
1943 | if (bs == bs1) | |
05f2401e | 1944 | return 0; |
a672b469 AL |
1945 | } |
1946 | } | |
1947 | } | |
1948 | ||
2d22b18f AL |
1949 | /* Don't even try to load empty VM states */ |
1950 | ret = bdrv_snapshot_find(bs, &sn, name); | |
1951 | if ((ret >= 0) && (sn.vm_state_size == 0)) | |
05f2401e | 1952 | return -EINVAL; |
2d22b18f | 1953 | |
a672b469 | 1954 | /* restore the VM state */ |
45566e9c | 1955 | f = qemu_fopen_bdrv(bs, 0); |
a672b469 | 1956 | if (!f) { |
1ecda02b | 1957 | error_report("Could not open VM state file"); |
05f2401e | 1958 | return -EINVAL; |
a672b469 AL |
1959 | } |
1960 | ret = qemu_loadvm_state(f); | |
1961 | qemu_fclose(f); | |
1962 | if (ret < 0) { | |
1ecda02b | 1963 | error_report("Error %d while loading VM state", ret); |
05f2401e | 1964 | return ret; |
a672b469 | 1965 | } |
05f2401e | 1966 | return 0; |
7b630349 JQ |
1967 | } |
1968 | ||
d54908a5 | 1969 | void do_delvm(Monitor *mon, const QDict *qdict) |
a672b469 AL |
1970 | { |
1971 | BlockDriverState *bs, *bs1; | |
751c6a17 | 1972 | int ret; |
d54908a5 | 1973 | const char *name = qdict_get_str(qdict, "name"); |
a672b469 | 1974 | |
f9092b10 | 1975 | bs = bdrv_snapshots(); |
a672b469 | 1976 | if (!bs) { |
376253ec | 1977 | monitor_printf(mon, "No block device supports snapshots\n"); |
a672b469 AL |
1978 | return; |
1979 | } | |
1980 | ||
dbc13590 MA |
1981 | bs1 = NULL; |
1982 | while ((bs1 = bdrv_next(bs1))) { | |
feeee5ac | 1983 | if (bdrv_can_snapshot(bs1)) { |
a672b469 AL |
1984 | ret = bdrv_snapshot_delete(bs1, name); |
1985 | if (ret < 0) { | |
1986 | if (ret == -ENOTSUP) | |
376253ec AL |
1987 | monitor_printf(mon, |
1988 | "Snapshots not supported on device '%s'\n", | |
1989 | bdrv_get_device_name(bs1)); | |
a672b469 | 1990 | else |
376253ec AL |
1991 | monitor_printf(mon, "Error %d while deleting snapshot on " |
1992 | "'%s'\n", ret, bdrv_get_device_name(bs1)); | |
a672b469 AL |
1993 | } |
1994 | } | |
1995 | } | |
1996 | } | |
1997 | ||
376253ec | 1998 | void do_info_snapshots(Monitor *mon) |
a672b469 AL |
1999 | { |
2000 | BlockDriverState *bs, *bs1; | |
2001 | QEMUSnapshotInfo *sn_tab, *sn; | |
2002 | int nb_sns, i; | |
2003 | char buf[256]; | |
2004 | ||
f9092b10 | 2005 | bs = bdrv_snapshots(); |
a672b469 | 2006 | if (!bs) { |
376253ec | 2007 | monitor_printf(mon, "No available block device supports snapshots\n"); |
a672b469 AL |
2008 | return; |
2009 | } | |
376253ec | 2010 | monitor_printf(mon, "Snapshot devices:"); |
dbc13590 MA |
2011 | bs1 = NULL; |
2012 | while ((bs1 = bdrv_next(bs1))) { | |
feeee5ac | 2013 | if (bdrv_can_snapshot(bs1)) { |
a672b469 | 2014 | if (bs == bs1) |
376253ec | 2015 | monitor_printf(mon, " %s", bdrv_get_device_name(bs1)); |
a672b469 AL |
2016 | } |
2017 | } | |
376253ec | 2018 | monitor_printf(mon, "\n"); |
a672b469 AL |
2019 | |
2020 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
2021 | if (nb_sns < 0) { | |
376253ec | 2022 | monitor_printf(mon, "bdrv_snapshot_list: error %d\n", nb_sns); |
a672b469 AL |
2023 | return; |
2024 | } | |
376253ec AL |
2025 | monitor_printf(mon, "Snapshot list (from %s):\n", |
2026 | bdrv_get_device_name(bs)); | |
2027 | monitor_printf(mon, "%s\n", bdrv_snapshot_dump(buf, sizeof(buf), NULL)); | |
a672b469 AL |
2028 | for(i = 0; i < nb_sns; i++) { |
2029 | sn = &sn_tab[i]; | |
376253ec | 2030 | monitor_printf(mon, "%s\n", bdrv_snapshot_dump(buf, sizeof(buf), sn)); |
a672b469 AL |
2031 | } |
2032 | qemu_free(sn_tab); | |
2033 | } |