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