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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 | ||
d40cdb10 BS |
32 | /* Needed early for _BSD etc. */ |
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> | |
45 | #if defined(__NetBSD__) | |
46 | #include <net/if_tap.h> | |
47 | #endif | |
48 | #ifdef __linux__ | |
49 | #include <linux/if_tun.h> | |
50 | #endif | |
51 | #include <arpa/inet.h> | |
52 | #include <dirent.h> | |
53 | #include <netdb.h> | |
54 | #include <sys/select.h> | |
55 | #ifdef _BSD | |
56 | #include <sys/stat.h> | |
c5e97233 | 57 | #if defined(__FreeBSD__) || defined(__DragonFly__) |
a672b469 AL |
58 | #include <libutil.h> |
59 | #else | |
60 | #include <util.h> | |
61 | #endif | |
62 | #elif defined (__GLIBC__) && defined (__FreeBSD_kernel__) | |
63 | #include <freebsd/stdlib.h> | |
64 | #else | |
65 | #ifdef __linux__ | |
66 | #include <pty.h> | |
67 | #include <malloc.h> | |
68 | #include <linux/rtc.h> | |
69 | #endif | |
70 | #endif | |
71 | #endif | |
72 | ||
73 | #ifdef _WIN32 | |
74 | #include <malloc.h> | |
75 | #include <sys/timeb.h> | |
76 | #include <mmsystem.h> | |
77 | #define getopt_long_only getopt_long | |
78 | #define memalign(align, size) malloc(size) | |
79 | #endif | |
80 | ||
511d2b14 BS |
81 | #include "qemu-common.h" |
82 | #include "hw/hw.h" | |
83 | #include "net.h" | |
84 | #include "monitor.h" | |
85 | #include "sysemu.h" | |
86 | #include "qemu-timer.h" | |
87 | #include "qemu-char.h" | |
88 | #include "block.h" | |
89 | #include "audio/audio.h" | |
90 | #include "migration.h" | |
91 | #include "qemu_socket.h" | |
92 | ||
a672b469 AL |
93 | /* point to the block driver where the snapshots are managed */ |
94 | static BlockDriverState *bs_snapshots; | |
95 | ||
96 | #define SELF_ANNOUNCE_ROUNDS 5 | |
97 | #define ETH_P_EXPERIMENTAL 0x01F1 /* just a number */ | |
98 | //#define ETH_P_EXPERIMENTAL 0x0012 /* make it the size of the packet */ | |
99 | #define EXPERIMENTAL_MAGIC 0xf1f23f4f | |
100 | ||
101 | static int announce_self_create(uint8_t *buf, | |
102 | uint8_t *mac_addr) | |
103 | { | |
104 | uint32_t magic = EXPERIMENTAL_MAGIC; | |
105 | uint16_t proto = htons(ETH_P_EXPERIMENTAL); | |
106 | ||
107 | /* FIXME: should we send a different packet (arp/rarp/ping)? */ | |
108 | ||
109 | memset(buf, 0xff, 6); /* h_dst */ | |
110 | memcpy(buf + 6, mac_addr, 6); /* h_src */ | |
111 | memcpy(buf + 12, &proto, 2); /* h_proto */ | |
112 | memcpy(buf + 14, &magic, 4); /* magic */ | |
113 | ||
114 | return 18; /* len */ | |
115 | } | |
116 | ||
117 | void qemu_announce_self(void) | |
118 | { | |
119 | int i, j, len; | |
120 | VLANState *vlan; | |
121 | VLANClientState *vc; | |
122 | uint8_t buf[256]; | |
123 | ||
124 | for (i = 0; i < nb_nics; i++) { | |
125 | len = announce_self_create(buf, nd_table[i].macaddr); | |
126 | vlan = nd_table[i].vlan; | |
127 | for(vc = vlan->first_client; vc != NULL; vc = vc->next) { | |
128 | for (j=0; j < SELF_ANNOUNCE_ROUNDS; j++) | |
129 | vc->fd_read(vc->opaque, buf, len); | |
130 | } | |
131 | } | |
132 | } | |
133 | ||
134 | /***********************************************************/ | |
135 | /* savevm/loadvm support */ | |
136 | ||
137 | #define IO_BUF_SIZE 32768 | |
138 | ||
139 | struct QEMUFile { | |
140 | QEMUFilePutBufferFunc *put_buffer; | |
141 | QEMUFileGetBufferFunc *get_buffer; | |
142 | QEMUFileCloseFunc *close; | |
143 | QEMUFileRateLimit *rate_limit; | |
144 | void *opaque; | |
145 | int is_write; | |
146 | ||
147 | int64_t buf_offset; /* start of buffer when writing, end of buffer | |
148 | when reading */ | |
149 | int buf_index; | |
150 | int buf_size; /* 0 when writing */ | |
151 | uint8_t buf[IO_BUF_SIZE]; | |
152 | ||
153 | int has_error; | |
154 | }; | |
155 | ||
156 | typedef struct QEMUFilePopen | |
157 | { | |
158 | FILE *popen_file; | |
159 | QEMUFile *file; | |
160 | } QEMUFilePopen; | |
161 | ||
162 | typedef struct QEMUFileSocket | |
163 | { | |
164 | int fd; | |
165 | QEMUFile *file; | |
166 | } QEMUFileSocket; | |
167 | ||
168 | static int socket_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) | |
169 | { | |
170 | QEMUFileSocket *s = opaque; | |
171 | ssize_t len; | |
172 | ||
173 | do { | |
174 | len = recv(s->fd, buf, size, 0); | |
175 | } while (len == -1 && socket_error() == EINTR); | |
176 | ||
177 | if (len == -1) | |
178 | len = -socket_error(); | |
179 | ||
180 | return len; | |
181 | } | |
182 | ||
183 | static int socket_close(void *opaque) | |
184 | { | |
185 | QEMUFileSocket *s = opaque; | |
186 | qemu_free(s); | |
187 | return 0; | |
188 | } | |
189 | ||
190 | static int popen_put_buffer(void *opaque, const uint8_t *buf, int64_t pos, int size) | |
191 | { | |
192 | QEMUFilePopen *s = opaque; | |
193 | return fwrite(buf, 1, size, s->popen_file); | |
194 | } | |
195 | ||
196 | static int popen_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) | |
197 | { | |
198 | QEMUFilePopen *s = opaque; | |
199 | return fread(buf, 1, size, s->popen_file); | |
200 | } | |
201 | ||
202 | static int popen_close(void *opaque) | |
203 | { | |
204 | QEMUFilePopen *s = opaque; | |
205 | pclose(s->popen_file); | |
206 | qemu_free(s); | |
207 | return 0; | |
208 | } | |
209 | ||
210 | QEMUFile *qemu_popen(FILE *popen_file, const char *mode) | |
211 | { | |
212 | QEMUFilePopen *s; | |
213 | ||
214 | if (popen_file == NULL || mode == NULL || (mode[0] != 'r' && mode[0] != 'w') || mode[1] != 0) { | |
215 | fprintf(stderr, "qemu_popen: Argument validity check failed\n"); | |
216 | return NULL; | |
217 | } | |
218 | ||
219 | s = qemu_mallocz(sizeof(QEMUFilePopen)); | |
a672b469 AL |
220 | |
221 | s->popen_file = popen_file; | |
222 | ||
223 | if(mode[0] == 'r') { | |
224 | s->file = qemu_fopen_ops(s, NULL, popen_get_buffer, popen_close, NULL); | |
225 | } else { | |
226 | s->file = qemu_fopen_ops(s, popen_put_buffer, NULL, popen_close, NULL); | |
227 | } | |
228 | fprintf(stderr, "qemu_popen: returning result of qemu_fopen_ops\n"); | |
229 | return s->file; | |
230 | } | |
231 | ||
232 | QEMUFile *qemu_popen_cmd(const char *command, const char *mode) | |
233 | { | |
234 | FILE *popen_file; | |
235 | ||
236 | popen_file = popen(command, mode); | |
237 | if(popen_file == NULL) { | |
238 | return NULL; | |
239 | } | |
240 | ||
241 | return qemu_popen(popen_file, mode); | |
242 | } | |
243 | ||
244 | QEMUFile *qemu_fopen_socket(int fd) | |
245 | { | |
246 | QEMUFileSocket *s = qemu_mallocz(sizeof(QEMUFileSocket)); | |
247 | ||
a672b469 AL |
248 | s->fd = fd; |
249 | s->file = qemu_fopen_ops(s, NULL, socket_get_buffer, socket_close, NULL); | |
250 | return s->file; | |
251 | } | |
252 | ||
253 | typedef struct QEMUFileStdio | |
254 | { | |
255 | FILE *outfile; | |
256 | } QEMUFileStdio; | |
257 | ||
258 | static int file_put_buffer(void *opaque, const uint8_t *buf, | |
259 | int64_t pos, int size) | |
260 | { | |
261 | QEMUFileStdio *s = opaque; | |
262 | fseek(s->outfile, pos, SEEK_SET); | |
263 | fwrite(buf, 1, size, s->outfile); | |
264 | return size; | |
265 | } | |
266 | ||
267 | static int file_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) | |
268 | { | |
269 | QEMUFileStdio *s = opaque; | |
270 | fseek(s->outfile, pos, SEEK_SET); | |
271 | return fread(buf, 1, size, s->outfile); | |
272 | } | |
273 | ||
274 | static int file_close(void *opaque) | |
275 | { | |
276 | QEMUFileStdio *s = opaque; | |
277 | fclose(s->outfile); | |
278 | qemu_free(s); | |
279 | return 0; | |
280 | } | |
281 | ||
282 | QEMUFile *qemu_fopen(const char *filename, const char *mode) | |
283 | { | |
284 | QEMUFileStdio *s; | |
285 | ||
286 | s = qemu_mallocz(sizeof(QEMUFileStdio)); | |
a672b469 AL |
287 | |
288 | s->outfile = fopen(filename, mode); | |
289 | if (!s->outfile) | |
290 | goto fail; | |
291 | ||
292 | if (!strcmp(mode, "wb")) | |
293 | return qemu_fopen_ops(s, file_put_buffer, NULL, file_close, NULL); | |
294 | else if (!strcmp(mode, "rb")) | |
295 | return qemu_fopen_ops(s, NULL, file_get_buffer, file_close, NULL); | |
296 | ||
297 | fail: | |
298 | if (s->outfile) | |
299 | fclose(s->outfile); | |
300 | qemu_free(s); | |
301 | return NULL; | |
302 | } | |
303 | ||
304 | typedef struct QEMUFileBdrv | |
305 | { | |
306 | BlockDriverState *bs; | |
307 | int64_t base_offset; | |
308 | } QEMUFileBdrv; | |
309 | ||
310 | static int bdrv_put_buffer(void *opaque, const uint8_t *buf, | |
311 | int64_t pos, int size) | |
312 | { | |
313 | QEMUFileBdrv *s = opaque; | |
314 | bdrv_pwrite(s->bs, s->base_offset + pos, buf, size); | |
315 | return size; | |
316 | } | |
317 | ||
318 | static int bdrv_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) | |
319 | { | |
320 | QEMUFileBdrv *s = opaque; | |
321 | return bdrv_pread(s->bs, s->base_offset + pos, buf, size); | |
322 | } | |
323 | ||
324 | static int bdrv_fclose(void *opaque) | |
325 | { | |
326 | QEMUFileBdrv *s = opaque; | |
327 | qemu_free(s); | |
328 | return 0; | |
329 | } | |
330 | ||
331 | static QEMUFile *qemu_fopen_bdrv(BlockDriverState *bs, int64_t offset, int is_writable) | |
332 | { | |
333 | QEMUFileBdrv *s; | |
334 | ||
335 | s = qemu_mallocz(sizeof(QEMUFileBdrv)); | |
a672b469 AL |
336 | |
337 | s->bs = bs; | |
338 | s->base_offset = offset; | |
339 | ||
340 | if (is_writable) | |
341 | return qemu_fopen_ops(s, bdrv_put_buffer, NULL, bdrv_fclose, NULL); | |
342 | ||
343 | return qemu_fopen_ops(s, NULL, bdrv_get_buffer, bdrv_fclose, NULL); | |
344 | } | |
345 | ||
346 | QEMUFile *qemu_fopen_ops(void *opaque, QEMUFilePutBufferFunc *put_buffer, | |
347 | QEMUFileGetBufferFunc *get_buffer, | |
348 | QEMUFileCloseFunc *close, | |
349 | QEMUFileRateLimit *rate_limit) | |
350 | { | |
351 | QEMUFile *f; | |
352 | ||
353 | f = qemu_mallocz(sizeof(QEMUFile)); | |
a672b469 AL |
354 | |
355 | f->opaque = opaque; | |
356 | f->put_buffer = put_buffer; | |
357 | f->get_buffer = get_buffer; | |
358 | f->close = close; | |
359 | f->rate_limit = rate_limit; | |
360 | f->is_write = 0; | |
361 | ||
362 | return f; | |
363 | } | |
364 | ||
365 | int qemu_file_has_error(QEMUFile *f) | |
366 | { | |
367 | return f->has_error; | |
368 | } | |
369 | ||
370 | void qemu_fflush(QEMUFile *f) | |
371 | { | |
372 | if (!f->put_buffer) | |
373 | return; | |
374 | ||
375 | if (f->is_write && f->buf_index > 0) { | |
376 | int len; | |
377 | ||
378 | len = f->put_buffer(f->opaque, f->buf, f->buf_offset, f->buf_index); | |
379 | if (len > 0) | |
380 | f->buf_offset += f->buf_index; | |
381 | else | |
382 | f->has_error = 1; | |
383 | f->buf_index = 0; | |
384 | } | |
385 | } | |
386 | ||
387 | static void qemu_fill_buffer(QEMUFile *f) | |
388 | { | |
389 | int len; | |
390 | ||
391 | if (!f->get_buffer) | |
392 | return; | |
393 | ||
394 | if (f->is_write) | |
395 | abort(); | |
396 | ||
397 | len = f->get_buffer(f->opaque, f->buf, f->buf_offset, IO_BUF_SIZE); | |
398 | if (len > 0) { | |
399 | f->buf_index = 0; | |
400 | f->buf_size = len; | |
401 | f->buf_offset += len; | |
402 | } else if (len != -EAGAIN) | |
403 | f->has_error = 1; | |
404 | } | |
405 | ||
406 | int qemu_fclose(QEMUFile *f) | |
407 | { | |
408 | int ret = 0; | |
409 | qemu_fflush(f); | |
410 | if (f->close) | |
411 | ret = f->close(f->opaque); | |
412 | qemu_free(f); | |
413 | return ret; | |
414 | } | |
415 | ||
416 | void qemu_file_put_notify(QEMUFile *f) | |
417 | { | |
418 | f->put_buffer(f->opaque, NULL, 0, 0); | |
419 | } | |
420 | ||
421 | void qemu_put_buffer(QEMUFile *f, const uint8_t *buf, int size) | |
422 | { | |
423 | int l; | |
424 | ||
425 | if (!f->has_error && f->is_write == 0 && f->buf_index > 0) { | |
426 | fprintf(stderr, | |
427 | "Attempted to write to buffer while read buffer is not empty\n"); | |
428 | abort(); | |
429 | } | |
430 | ||
431 | while (!f->has_error && size > 0) { | |
432 | l = IO_BUF_SIZE - f->buf_index; | |
433 | if (l > size) | |
434 | l = size; | |
435 | memcpy(f->buf + f->buf_index, buf, l); | |
436 | f->is_write = 1; | |
437 | f->buf_index += l; | |
438 | buf += l; | |
439 | size -= l; | |
440 | if (f->buf_index >= IO_BUF_SIZE) | |
441 | qemu_fflush(f); | |
442 | } | |
443 | } | |
444 | ||
445 | void qemu_put_byte(QEMUFile *f, int v) | |
446 | { | |
447 | if (!f->has_error && f->is_write == 0 && f->buf_index > 0) { | |
448 | fprintf(stderr, | |
449 | "Attempted to write to buffer while read buffer is not empty\n"); | |
450 | abort(); | |
451 | } | |
452 | ||
453 | f->buf[f->buf_index++] = v; | |
454 | f->is_write = 1; | |
455 | if (f->buf_index >= IO_BUF_SIZE) | |
456 | qemu_fflush(f); | |
457 | } | |
458 | ||
459 | int qemu_get_buffer(QEMUFile *f, uint8_t *buf, int size1) | |
460 | { | |
461 | int size, l; | |
462 | ||
463 | if (f->is_write) | |
464 | abort(); | |
465 | ||
466 | size = size1; | |
467 | while (size > 0) { | |
468 | l = f->buf_size - f->buf_index; | |
469 | if (l == 0) { | |
470 | qemu_fill_buffer(f); | |
471 | l = f->buf_size - f->buf_index; | |
472 | if (l == 0) | |
473 | break; | |
474 | } | |
475 | if (l > size) | |
476 | l = size; | |
477 | memcpy(buf, f->buf + f->buf_index, l); | |
478 | f->buf_index += l; | |
479 | buf += l; | |
480 | size -= l; | |
481 | } | |
482 | return size1 - size; | |
483 | } | |
484 | ||
485 | int qemu_get_byte(QEMUFile *f) | |
486 | { | |
487 | if (f->is_write) | |
488 | abort(); | |
489 | ||
490 | if (f->buf_index >= f->buf_size) { | |
491 | qemu_fill_buffer(f); | |
492 | if (f->buf_index >= f->buf_size) | |
493 | return 0; | |
494 | } | |
495 | return f->buf[f->buf_index++]; | |
496 | } | |
497 | ||
498 | int64_t qemu_ftell(QEMUFile *f) | |
499 | { | |
500 | return f->buf_offset - f->buf_size + f->buf_index; | |
501 | } | |
502 | ||
503 | int64_t qemu_fseek(QEMUFile *f, int64_t pos, int whence) | |
504 | { | |
505 | if (whence == SEEK_SET) { | |
506 | /* nothing to do */ | |
507 | } else if (whence == SEEK_CUR) { | |
508 | pos += qemu_ftell(f); | |
509 | } else { | |
510 | /* SEEK_END not supported */ | |
511 | return -1; | |
512 | } | |
513 | if (f->put_buffer) { | |
514 | qemu_fflush(f); | |
515 | f->buf_offset = pos; | |
516 | } else { | |
517 | f->buf_offset = pos; | |
518 | f->buf_index = 0; | |
519 | f->buf_size = 0; | |
520 | } | |
521 | return pos; | |
522 | } | |
523 | ||
524 | int qemu_file_rate_limit(QEMUFile *f) | |
525 | { | |
526 | if (f->rate_limit) | |
527 | return f->rate_limit(f->opaque); | |
528 | ||
529 | return 0; | |
530 | } | |
531 | ||
532 | void qemu_put_be16(QEMUFile *f, unsigned int v) | |
533 | { | |
534 | qemu_put_byte(f, v >> 8); | |
535 | qemu_put_byte(f, v); | |
536 | } | |
537 | ||
538 | void qemu_put_be32(QEMUFile *f, unsigned int v) | |
539 | { | |
540 | qemu_put_byte(f, v >> 24); | |
541 | qemu_put_byte(f, v >> 16); | |
542 | qemu_put_byte(f, v >> 8); | |
543 | qemu_put_byte(f, v); | |
544 | } | |
545 | ||
546 | void qemu_put_be64(QEMUFile *f, uint64_t v) | |
547 | { | |
548 | qemu_put_be32(f, v >> 32); | |
549 | qemu_put_be32(f, v); | |
550 | } | |
551 | ||
552 | unsigned int qemu_get_be16(QEMUFile *f) | |
553 | { | |
554 | unsigned int v; | |
555 | v = qemu_get_byte(f) << 8; | |
556 | v |= qemu_get_byte(f); | |
557 | return v; | |
558 | } | |
559 | ||
560 | unsigned int qemu_get_be32(QEMUFile *f) | |
561 | { | |
562 | unsigned int v; | |
563 | v = qemu_get_byte(f) << 24; | |
564 | v |= qemu_get_byte(f) << 16; | |
565 | v |= qemu_get_byte(f) << 8; | |
566 | v |= qemu_get_byte(f); | |
567 | return v; | |
568 | } | |
569 | ||
570 | uint64_t qemu_get_be64(QEMUFile *f) | |
571 | { | |
572 | uint64_t v; | |
573 | v = (uint64_t)qemu_get_be32(f) << 32; | |
574 | v |= qemu_get_be32(f); | |
575 | return v; | |
576 | } | |
577 | ||
578 | typedef struct SaveStateEntry { | |
579 | char idstr[256]; | |
580 | int instance_id; | |
581 | int version_id; | |
582 | int section_id; | |
583 | SaveLiveStateHandler *save_live_state; | |
584 | SaveStateHandler *save_state; | |
585 | LoadStateHandler *load_state; | |
586 | void *opaque; | |
587 | struct SaveStateEntry *next; | |
588 | } SaveStateEntry; | |
589 | ||
590 | static SaveStateEntry *first_se; | |
591 | ||
592 | /* TODO: Individual devices generally have very little idea about the rest | |
593 | of the system, so instance_id should be removed/replaced. | |
594 | Meanwhile pass -1 as instance_id if you do not already have a clearly | |
595 | distinguishing id for all instances of your device class. */ | |
596 | int register_savevm_live(const char *idstr, | |
597 | int instance_id, | |
598 | int version_id, | |
599 | SaveLiveStateHandler *save_live_state, | |
600 | SaveStateHandler *save_state, | |
601 | LoadStateHandler *load_state, | |
602 | void *opaque) | |
603 | { | |
604 | SaveStateEntry *se, **pse; | |
605 | static int global_section_id; | |
606 | ||
607 | se = qemu_malloc(sizeof(SaveStateEntry)); | |
a672b469 AL |
608 | pstrcpy(se->idstr, sizeof(se->idstr), idstr); |
609 | se->instance_id = (instance_id == -1) ? 0 : instance_id; | |
610 | se->version_id = version_id; | |
611 | se->section_id = global_section_id++; | |
612 | se->save_live_state = save_live_state; | |
613 | se->save_state = save_state; | |
614 | se->load_state = load_state; | |
615 | se->opaque = opaque; | |
616 | se->next = NULL; | |
617 | ||
618 | /* add at the end of list */ | |
619 | pse = &first_se; | |
620 | while (*pse != NULL) { | |
621 | if (instance_id == -1 | |
622 | && strcmp(se->idstr, (*pse)->idstr) == 0 | |
623 | && se->instance_id <= (*pse)->instance_id) | |
624 | se->instance_id = (*pse)->instance_id + 1; | |
625 | pse = &(*pse)->next; | |
626 | } | |
627 | *pse = se; | |
628 | return 0; | |
629 | } | |
630 | ||
631 | int register_savevm(const char *idstr, | |
632 | int instance_id, | |
633 | int version_id, | |
634 | SaveStateHandler *save_state, | |
635 | LoadStateHandler *load_state, | |
636 | void *opaque) | |
637 | { | |
638 | return register_savevm_live(idstr, instance_id, version_id, | |
639 | NULL, save_state, load_state, opaque); | |
640 | } | |
641 | ||
642 | #define QEMU_VM_FILE_MAGIC 0x5145564d | |
643 | #define QEMU_VM_FILE_VERSION_COMPAT 0x00000002 | |
644 | #define QEMU_VM_FILE_VERSION 0x00000003 | |
645 | ||
646 | #define QEMU_VM_EOF 0x00 | |
647 | #define QEMU_VM_SECTION_START 0x01 | |
648 | #define QEMU_VM_SECTION_PART 0x02 | |
649 | #define QEMU_VM_SECTION_END 0x03 | |
650 | #define QEMU_VM_SECTION_FULL 0x04 | |
651 | ||
652 | int qemu_savevm_state_begin(QEMUFile *f) | |
653 | { | |
654 | SaveStateEntry *se; | |
655 | ||
656 | qemu_put_be32(f, QEMU_VM_FILE_MAGIC); | |
657 | qemu_put_be32(f, QEMU_VM_FILE_VERSION); | |
658 | ||
659 | for (se = first_se; se != NULL; se = se->next) { | |
660 | int len; | |
661 | ||
662 | if (se->save_live_state == NULL) | |
663 | continue; | |
664 | ||
665 | /* Section type */ | |
666 | qemu_put_byte(f, QEMU_VM_SECTION_START); | |
667 | qemu_put_be32(f, se->section_id); | |
668 | ||
669 | /* ID string */ | |
670 | len = strlen(se->idstr); | |
671 | qemu_put_byte(f, len); | |
672 | qemu_put_buffer(f, (uint8_t *)se->idstr, len); | |
673 | ||
674 | qemu_put_be32(f, se->instance_id); | |
675 | qemu_put_be32(f, se->version_id); | |
676 | ||
677 | se->save_live_state(f, QEMU_VM_SECTION_START, se->opaque); | |
678 | } | |
679 | ||
680 | if (qemu_file_has_error(f)) | |
681 | return -EIO; | |
682 | ||
683 | return 0; | |
684 | } | |
685 | ||
686 | int qemu_savevm_state_iterate(QEMUFile *f) | |
687 | { | |
688 | SaveStateEntry *se; | |
689 | int ret = 1; | |
690 | ||
691 | for (se = first_se; se != NULL; se = se->next) { | |
692 | if (se->save_live_state == NULL) | |
693 | continue; | |
694 | ||
695 | /* Section type */ | |
696 | qemu_put_byte(f, QEMU_VM_SECTION_PART); | |
697 | qemu_put_be32(f, se->section_id); | |
698 | ||
699 | ret &= !!se->save_live_state(f, QEMU_VM_SECTION_PART, se->opaque); | |
700 | } | |
701 | ||
702 | if (ret) | |
703 | return 1; | |
704 | ||
705 | if (qemu_file_has_error(f)) | |
706 | return -EIO; | |
707 | ||
708 | return 0; | |
709 | } | |
710 | ||
711 | int qemu_savevm_state_complete(QEMUFile *f) | |
712 | { | |
713 | SaveStateEntry *se; | |
714 | ||
715 | for (se = first_se; se != NULL; se = se->next) { | |
716 | if (se->save_live_state == NULL) | |
717 | continue; | |
718 | ||
719 | /* Section type */ | |
720 | qemu_put_byte(f, QEMU_VM_SECTION_END); | |
721 | qemu_put_be32(f, se->section_id); | |
722 | ||
723 | se->save_live_state(f, QEMU_VM_SECTION_END, se->opaque); | |
724 | } | |
725 | ||
726 | for(se = first_se; se != NULL; se = se->next) { | |
727 | int len; | |
728 | ||
729 | if (se->save_state == NULL) | |
730 | continue; | |
731 | ||
732 | /* Section type */ | |
733 | qemu_put_byte(f, QEMU_VM_SECTION_FULL); | |
734 | qemu_put_be32(f, se->section_id); | |
735 | ||
736 | /* ID string */ | |
737 | len = strlen(se->idstr); | |
738 | qemu_put_byte(f, len); | |
739 | qemu_put_buffer(f, (uint8_t *)se->idstr, len); | |
740 | ||
741 | qemu_put_be32(f, se->instance_id); | |
742 | qemu_put_be32(f, se->version_id); | |
743 | ||
744 | se->save_state(f, se->opaque); | |
745 | } | |
746 | ||
747 | qemu_put_byte(f, QEMU_VM_EOF); | |
748 | ||
749 | if (qemu_file_has_error(f)) | |
750 | return -EIO; | |
751 | ||
752 | return 0; | |
753 | } | |
754 | ||
755 | int qemu_savevm_state(QEMUFile *f) | |
756 | { | |
757 | int saved_vm_running; | |
758 | int ret; | |
759 | ||
760 | saved_vm_running = vm_running; | |
761 | vm_stop(0); | |
762 | ||
763 | bdrv_flush_all(); | |
764 | ||
765 | ret = qemu_savevm_state_begin(f); | |
766 | if (ret < 0) | |
767 | goto out; | |
768 | ||
769 | do { | |
770 | ret = qemu_savevm_state_iterate(f); | |
771 | if (ret < 0) | |
772 | goto out; | |
773 | } while (ret == 0); | |
774 | ||
775 | ret = qemu_savevm_state_complete(f); | |
776 | ||
777 | out: | |
778 | if (qemu_file_has_error(f)) | |
779 | ret = -EIO; | |
780 | ||
781 | if (!ret && saved_vm_running) | |
782 | vm_start(); | |
783 | ||
784 | return ret; | |
785 | } | |
786 | ||
787 | static SaveStateEntry *find_se(const char *idstr, int instance_id) | |
788 | { | |
789 | SaveStateEntry *se; | |
790 | ||
791 | for(se = first_se; se != NULL; se = se->next) { | |
792 | if (!strcmp(se->idstr, idstr) && | |
793 | instance_id == se->instance_id) | |
794 | return se; | |
795 | } | |
796 | return NULL; | |
797 | } | |
798 | ||
799 | typedef struct LoadStateEntry { | |
800 | SaveStateEntry *se; | |
801 | int section_id; | |
802 | int version_id; | |
803 | struct LoadStateEntry *next; | |
804 | } LoadStateEntry; | |
805 | ||
806 | static int qemu_loadvm_state_v2(QEMUFile *f) | |
807 | { | |
808 | SaveStateEntry *se; | |
809 | int len, ret, instance_id, record_len, version_id; | |
810 | int64_t total_len, end_pos, cur_pos; | |
811 | char idstr[256]; | |
812 | ||
813 | total_len = qemu_get_be64(f); | |
814 | end_pos = total_len + qemu_ftell(f); | |
815 | for(;;) { | |
816 | if (qemu_ftell(f) >= end_pos) | |
817 | break; | |
818 | len = qemu_get_byte(f); | |
819 | qemu_get_buffer(f, (uint8_t *)idstr, len); | |
820 | idstr[len] = '\0'; | |
821 | instance_id = qemu_get_be32(f); | |
822 | version_id = qemu_get_be32(f); | |
823 | record_len = qemu_get_be32(f); | |
824 | cur_pos = qemu_ftell(f); | |
825 | se = find_se(idstr, instance_id); | |
826 | if (!se) { | |
827 | fprintf(stderr, "qemu: warning: instance 0x%x of device '%s' not present in current VM\n", | |
828 | instance_id, idstr); | |
829 | } else { | |
830 | ret = se->load_state(f, se->opaque, version_id); | |
831 | if (ret < 0) { | |
832 | fprintf(stderr, "qemu: warning: error while loading state for instance 0x%x of device '%s'\n", | |
833 | instance_id, idstr); | |
834 | } | |
835 | } | |
836 | /* always seek to exact end of record */ | |
837 | qemu_fseek(f, cur_pos + record_len, SEEK_SET); | |
838 | } | |
839 | ||
840 | if (qemu_file_has_error(f)) | |
841 | return -EIO; | |
842 | ||
843 | return 0; | |
844 | } | |
845 | ||
846 | int qemu_loadvm_state(QEMUFile *f) | |
847 | { | |
848 | LoadStateEntry *first_le = NULL; | |
849 | uint8_t section_type; | |
850 | unsigned int v; | |
851 | int ret; | |
852 | ||
853 | v = qemu_get_be32(f); | |
854 | if (v != QEMU_VM_FILE_MAGIC) | |
855 | return -EINVAL; | |
856 | ||
857 | v = qemu_get_be32(f); | |
858 | if (v == QEMU_VM_FILE_VERSION_COMPAT) | |
859 | return qemu_loadvm_state_v2(f); | |
860 | if (v != QEMU_VM_FILE_VERSION) | |
861 | return -ENOTSUP; | |
862 | ||
863 | while ((section_type = qemu_get_byte(f)) != QEMU_VM_EOF) { | |
864 | uint32_t instance_id, version_id, section_id; | |
865 | LoadStateEntry *le; | |
866 | SaveStateEntry *se; | |
867 | char idstr[257]; | |
868 | int len; | |
869 | ||
870 | switch (section_type) { | |
871 | case QEMU_VM_SECTION_START: | |
872 | case QEMU_VM_SECTION_FULL: | |
873 | /* Read section start */ | |
874 | section_id = qemu_get_be32(f); | |
875 | len = qemu_get_byte(f); | |
876 | qemu_get_buffer(f, (uint8_t *)idstr, len); | |
877 | idstr[len] = 0; | |
878 | instance_id = qemu_get_be32(f); | |
879 | version_id = qemu_get_be32(f); | |
880 | ||
881 | /* Find savevm section */ | |
882 | se = find_se(idstr, instance_id); | |
883 | if (se == NULL) { | |
884 | fprintf(stderr, "Unknown savevm section or instance '%s' %d\n", idstr, instance_id); | |
885 | ret = -EINVAL; | |
886 | goto out; | |
887 | } | |
888 | ||
889 | /* Validate version */ | |
890 | if (version_id > se->version_id) { | |
891 | fprintf(stderr, "savevm: unsupported version %d for '%s' v%d\n", | |
892 | version_id, idstr, se->version_id); | |
893 | ret = -EINVAL; | |
894 | goto out; | |
895 | } | |
896 | ||
897 | /* Add entry */ | |
898 | le = qemu_mallocz(sizeof(*le)); | |
a672b469 AL |
899 | |
900 | le->se = se; | |
901 | le->section_id = section_id; | |
902 | le->version_id = version_id; | |
903 | le->next = first_le; | |
904 | first_le = le; | |
905 | ||
906 | le->se->load_state(f, le->se->opaque, le->version_id); | |
907 | break; | |
908 | case QEMU_VM_SECTION_PART: | |
909 | case QEMU_VM_SECTION_END: | |
910 | section_id = qemu_get_be32(f); | |
911 | ||
912 | for (le = first_le; le && le->section_id != section_id; le = le->next); | |
913 | if (le == NULL) { | |
914 | fprintf(stderr, "Unknown savevm section %d\n", section_id); | |
915 | ret = -EINVAL; | |
916 | goto out; | |
917 | } | |
918 | ||
919 | le->se->load_state(f, le->se->opaque, le->version_id); | |
920 | break; | |
921 | default: | |
922 | fprintf(stderr, "Unknown savevm section type %d\n", section_type); | |
923 | ret = -EINVAL; | |
924 | goto out; | |
925 | } | |
926 | } | |
927 | ||
928 | ret = 0; | |
929 | ||
930 | out: | |
931 | while (first_le) { | |
932 | LoadStateEntry *le = first_le; | |
933 | first_le = first_le->next; | |
934 | qemu_free(le); | |
935 | } | |
936 | ||
937 | if (qemu_file_has_error(f)) | |
938 | ret = -EIO; | |
939 | ||
940 | return ret; | |
941 | } | |
942 | ||
943 | /* device can contain snapshots */ | |
944 | static int bdrv_can_snapshot(BlockDriverState *bs) | |
945 | { | |
946 | return (bs && | |
947 | !bdrv_is_removable(bs) && | |
948 | !bdrv_is_read_only(bs)); | |
949 | } | |
950 | ||
951 | /* device must be snapshots in order to have a reliable snapshot */ | |
952 | static int bdrv_has_snapshot(BlockDriverState *bs) | |
953 | { | |
954 | return (bs && | |
955 | !bdrv_is_removable(bs) && | |
956 | !bdrv_is_read_only(bs)); | |
957 | } | |
958 | ||
959 | static BlockDriverState *get_bs_snapshots(void) | |
960 | { | |
961 | BlockDriverState *bs; | |
962 | int i; | |
963 | ||
964 | if (bs_snapshots) | |
965 | return bs_snapshots; | |
966 | for(i = 0; i <= nb_drives; i++) { | |
967 | bs = drives_table[i].bdrv; | |
968 | if (bdrv_can_snapshot(bs)) | |
969 | goto ok; | |
970 | } | |
971 | return NULL; | |
972 | ok: | |
973 | bs_snapshots = bs; | |
974 | return bs; | |
975 | } | |
976 | ||
977 | static int bdrv_snapshot_find(BlockDriverState *bs, QEMUSnapshotInfo *sn_info, | |
978 | const char *name) | |
979 | { | |
980 | QEMUSnapshotInfo *sn_tab, *sn; | |
981 | int nb_sns, i, ret; | |
982 | ||
983 | ret = -ENOENT; | |
984 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
985 | if (nb_sns < 0) | |
986 | return ret; | |
987 | for(i = 0; i < nb_sns; i++) { | |
988 | sn = &sn_tab[i]; | |
989 | if (!strcmp(sn->id_str, name) || !strcmp(sn->name, name)) { | |
990 | *sn_info = *sn; | |
991 | ret = 0; | |
992 | break; | |
993 | } | |
994 | } | |
995 | qemu_free(sn_tab); | |
996 | return ret; | |
997 | } | |
998 | ||
376253ec | 999 | void do_savevm(Monitor *mon, const char *name) |
a672b469 AL |
1000 | { |
1001 | BlockDriverState *bs, *bs1; | |
1002 | QEMUSnapshotInfo sn1, *sn = &sn1, old_sn1, *old_sn = &old_sn1; | |
1003 | int must_delete, ret, i; | |
1004 | BlockDriverInfo bdi1, *bdi = &bdi1; | |
1005 | QEMUFile *f; | |
1006 | int saved_vm_running; | |
2d22b18f | 1007 | uint32_t vm_state_size; |
a672b469 AL |
1008 | #ifdef _WIN32 |
1009 | struct _timeb tb; | |
1010 | #else | |
1011 | struct timeval tv; | |
1012 | #endif | |
1013 | ||
1014 | bs = get_bs_snapshots(); | |
1015 | if (!bs) { | |
376253ec | 1016 | monitor_printf(mon, "No block device can accept snapshots\n"); |
a672b469 AL |
1017 | return; |
1018 | } | |
1019 | ||
1020 | /* ??? Should this occur after vm_stop? */ | |
1021 | qemu_aio_flush(); | |
1022 | ||
1023 | saved_vm_running = vm_running; | |
1024 | vm_stop(0); | |
1025 | ||
1026 | must_delete = 0; | |
1027 | if (name) { | |
1028 | ret = bdrv_snapshot_find(bs, old_sn, name); | |
1029 | if (ret >= 0) { | |
1030 | must_delete = 1; | |
1031 | } | |
1032 | } | |
1033 | memset(sn, 0, sizeof(*sn)); | |
1034 | if (must_delete) { | |
1035 | pstrcpy(sn->name, sizeof(sn->name), old_sn->name); | |
1036 | pstrcpy(sn->id_str, sizeof(sn->id_str), old_sn->id_str); | |
1037 | } else { | |
1038 | if (name) | |
1039 | pstrcpy(sn->name, sizeof(sn->name), name); | |
1040 | } | |
1041 | ||
1042 | /* fill auxiliary fields */ | |
1043 | #ifdef _WIN32 | |
1044 | _ftime(&tb); | |
1045 | sn->date_sec = tb.time; | |
1046 | sn->date_nsec = tb.millitm * 1000000; | |
1047 | #else | |
1048 | gettimeofday(&tv, NULL); | |
1049 | sn->date_sec = tv.tv_sec; | |
1050 | sn->date_nsec = tv.tv_usec * 1000; | |
1051 | #endif | |
1052 | sn->vm_clock_nsec = qemu_get_clock(vm_clock); | |
1053 | ||
1054 | if (bdrv_get_info(bs, bdi) < 0 || bdi->vm_state_offset <= 0) { | |
376253ec AL |
1055 | monitor_printf(mon, "Device %s does not support VM state snapshots\n", |
1056 | bdrv_get_device_name(bs)); | |
a672b469 AL |
1057 | goto the_end; |
1058 | } | |
1059 | ||
1060 | /* save the VM state */ | |
1061 | f = qemu_fopen_bdrv(bs, bdi->vm_state_offset, 1); | |
1062 | if (!f) { | |
376253ec | 1063 | monitor_printf(mon, "Could not open VM state file\n"); |
a672b469 AL |
1064 | goto the_end; |
1065 | } | |
1066 | ret = qemu_savevm_state(f); | |
2d22b18f | 1067 | vm_state_size = qemu_ftell(f); |
a672b469 AL |
1068 | qemu_fclose(f); |
1069 | if (ret < 0) { | |
376253ec | 1070 | monitor_printf(mon, "Error %d while writing VM\n", ret); |
a672b469 AL |
1071 | goto the_end; |
1072 | } | |
1073 | ||
1074 | /* create the snapshots */ | |
1075 | ||
1076 | for(i = 0; i < nb_drives; i++) { | |
1077 | bs1 = drives_table[i].bdrv; | |
1078 | if (bdrv_has_snapshot(bs1)) { | |
1079 | if (must_delete) { | |
1080 | ret = bdrv_snapshot_delete(bs1, old_sn->id_str); | |
1081 | if (ret < 0) { | |
376253ec AL |
1082 | monitor_printf(mon, |
1083 | "Error while deleting snapshot on '%s'\n", | |
1084 | bdrv_get_device_name(bs1)); | |
a672b469 AL |
1085 | } |
1086 | } | |
2d22b18f AL |
1087 | /* Write VM state size only to the image that contains the state */ |
1088 | sn->vm_state_size = (bs == bs1 ? vm_state_size : 0); | |
a672b469 AL |
1089 | ret = bdrv_snapshot_create(bs1, sn); |
1090 | if (ret < 0) { | |
376253ec AL |
1091 | monitor_printf(mon, "Error while creating snapshot on '%s'\n", |
1092 | bdrv_get_device_name(bs1)); | |
a672b469 AL |
1093 | } |
1094 | } | |
1095 | } | |
1096 | ||
1097 | the_end: | |
1098 | if (saved_vm_running) | |
1099 | vm_start(); | |
1100 | } | |
1101 | ||
376253ec | 1102 | void do_loadvm(Monitor *mon, const char *name) |
a672b469 AL |
1103 | { |
1104 | BlockDriverState *bs, *bs1; | |
1105 | BlockDriverInfo bdi1, *bdi = &bdi1; | |
2d22b18f | 1106 | QEMUSnapshotInfo sn; |
a672b469 AL |
1107 | QEMUFile *f; |
1108 | int i, ret; | |
1109 | int saved_vm_running; | |
1110 | ||
1111 | bs = get_bs_snapshots(); | |
1112 | if (!bs) { | |
376253ec | 1113 | monitor_printf(mon, "No block device supports snapshots\n"); |
a672b469 AL |
1114 | return; |
1115 | } | |
1116 | ||
1117 | /* Flush all IO requests so they don't interfere with the new state. */ | |
1118 | qemu_aio_flush(); | |
1119 | ||
1120 | saved_vm_running = vm_running; | |
1121 | vm_stop(0); | |
1122 | ||
1123 | for(i = 0; i <= nb_drives; i++) { | |
1124 | bs1 = drives_table[i].bdrv; | |
1125 | if (bdrv_has_snapshot(bs1)) { | |
1126 | ret = bdrv_snapshot_goto(bs1, name); | |
1127 | if (ret < 0) { | |
1128 | if (bs != bs1) | |
376253ec | 1129 | monitor_printf(mon, "Warning: "); |
a672b469 AL |
1130 | switch(ret) { |
1131 | case -ENOTSUP: | |
376253ec AL |
1132 | monitor_printf(mon, |
1133 | "Snapshots not supported on device '%s'\n", | |
1134 | bdrv_get_device_name(bs1)); | |
a672b469 AL |
1135 | break; |
1136 | case -ENOENT: | |
376253ec AL |
1137 | monitor_printf(mon, "Could not find snapshot '%s' on " |
1138 | "device '%s'\n", | |
1139 | name, bdrv_get_device_name(bs1)); | |
a672b469 AL |
1140 | break; |
1141 | default: | |
376253ec AL |
1142 | monitor_printf(mon, "Error %d while activating snapshot on" |
1143 | " '%s'\n", ret, bdrv_get_device_name(bs1)); | |
a672b469 AL |
1144 | break; |
1145 | } | |
1146 | /* fatal on snapshot block device */ | |
1147 | if (bs == bs1) | |
1148 | goto the_end; | |
1149 | } | |
1150 | } | |
1151 | } | |
1152 | ||
1153 | if (bdrv_get_info(bs, bdi) < 0 || bdi->vm_state_offset <= 0) { | |
376253ec AL |
1154 | monitor_printf(mon, "Device %s does not support VM state snapshots\n", |
1155 | bdrv_get_device_name(bs)); | |
a672b469 AL |
1156 | return; |
1157 | } | |
1158 | ||
2d22b18f AL |
1159 | /* Don't even try to load empty VM states */ |
1160 | ret = bdrv_snapshot_find(bs, &sn, name); | |
1161 | if ((ret >= 0) && (sn.vm_state_size == 0)) | |
1162 | goto the_end; | |
1163 | ||
a672b469 AL |
1164 | /* restore the VM state */ |
1165 | f = qemu_fopen_bdrv(bs, bdi->vm_state_offset, 0); | |
1166 | if (!f) { | |
376253ec | 1167 | monitor_printf(mon, "Could not open VM state file\n"); |
a672b469 AL |
1168 | goto the_end; |
1169 | } | |
1170 | ret = qemu_loadvm_state(f); | |
1171 | qemu_fclose(f); | |
1172 | if (ret < 0) { | |
376253ec | 1173 | monitor_printf(mon, "Error %d while loading VM state\n", ret); |
a672b469 AL |
1174 | } |
1175 | the_end: | |
1176 | if (saved_vm_running) | |
1177 | vm_start(); | |
1178 | } | |
1179 | ||
376253ec | 1180 | void do_delvm(Monitor *mon, const char *name) |
a672b469 AL |
1181 | { |
1182 | BlockDriverState *bs, *bs1; | |
1183 | int i, ret; | |
1184 | ||
1185 | bs = get_bs_snapshots(); | |
1186 | if (!bs) { | |
376253ec | 1187 | monitor_printf(mon, "No block device supports snapshots\n"); |
a672b469 AL |
1188 | return; |
1189 | } | |
1190 | ||
1191 | for(i = 0; i <= nb_drives; i++) { | |
1192 | bs1 = drives_table[i].bdrv; | |
1193 | if (bdrv_has_snapshot(bs1)) { | |
1194 | ret = bdrv_snapshot_delete(bs1, name); | |
1195 | if (ret < 0) { | |
1196 | if (ret == -ENOTSUP) | |
376253ec AL |
1197 | monitor_printf(mon, |
1198 | "Snapshots not supported on device '%s'\n", | |
1199 | bdrv_get_device_name(bs1)); | |
a672b469 | 1200 | else |
376253ec AL |
1201 | monitor_printf(mon, "Error %d while deleting snapshot on " |
1202 | "'%s'\n", ret, bdrv_get_device_name(bs1)); | |
a672b469 AL |
1203 | } |
1204 | } | |
1205 | } | |
1206 | } | |
1207 | ||
376253ec | 1208 | void do_info_snapshots(Monitor *mon) |
a672b469 AL |
1209 | { |
1210 | BlockDriverState *bs, *bs1; | |
1211 | QEMUSnapshotInfo *sn_tab, *sn; | |
1212 | int nb_sns, i; | |
1213 | char buf[256]; | |
1214 | ||
1215 | bs = get_bs_snapshots(); | |
1216 | if (!bs) { | |
376253ec | 1217 | monitor_printf(mon, "No available block device supports snapshots\n"); |
a672b469 AL |
1218 | return; |
1219 | } | |
376253ec | 1220 | monitor_printf(mon, "Snapshot devices:"); |
a672b469 AL |
1221 | for(i = 0; i <= nb_drives; i++) { |
1222 | bs1 = drives_table[i].bdrv; | |
1223 | if (bdrv_has_snapshot(bs1)) { | |
1224 | if (bs == bs1) | |
376253ec | 1225 | monitor_printf(mon, " %s", bdrv_get_device_name(bs1)); |
a672b469 AL |
1226 | } |
1227 | } | |
376253ec | 1228 | monitor_printf(mon, "\n"); |
a672b469 AL |
1229 | |
1230 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
1231 | if (nb_sns < 0) { | |
376253ec | 1232 | monitor_printf(mon, "bdrv_snapshot_list: error %d\n", nb_sns); |
a672b469 AL |
1233 | return; |
1234 | } | |
376253ec AL |
1235 | monitor_printf(mon, "Snapshot list (from %s):\n", |
1236 | bdrv_get_device_name(bs)); | |
1237 | monitor_printf(mon, "%s\n", bdrv_snapshot_dump(buf, sizeof(buf), NULL)); | |
a672b469 AL |
1238 | for(i = 0; i < nb_sns; i++) { |
1239 | sn = &sn_tab[i]; | |
376253ec | 1240 | monitor_printf(mon, "%s\n", bdrv_snapshot_dump(buf, sizeof(buf), sn)); |
a672b469 AL |
1241 | } |
1242 | qemu_free(sn_tab); | |
1243 | } |