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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 | ||
179a2c19 | 32 | /* Needed early for HOST_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> | |
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> | |
179a2c19 | 55 | #ifdef HOST_BSD |
a672b469 | 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 | |
49dc768d | 74 | #include <windows.h> |
a672b469 AL |
75 | #include <malloc.h> |
76 | #include <sys/timeb.h> | |
77 | #include <mmsystem.h> | |
78 | #define getopt_long_only getopt_long | |
79 | #define memalign(align, size) malloc(size) | |
80 | #endif | |
81 | ||
511d2b14 BS |
82 | #include "qemu-common.h" |
83 | #include "hw/hw.h" | |
84 | #include "net.h" | |
85 | #include "monitor.h" | |
86 | #include "sysemu.h" | |
87 | #include "qemu-timer.h" | |
88 | #include "qemu-char.h" | |
89 | #include "block.h" | |
90 | #include "audio/audio.h" | |
91 | #include "migration.h" | |
92 | #include "qemu_socket.h" | |
93 | ||
a672b469 AL |
94 | /* point to the block driver where the snapshots are managed */ |
95 | static BlockDriverState *bs_snapshots; | |
96 | ||
97 | #define SELF_ANNOUNCE_ROUNDS 5 | |
98 | #define ETH_P_EXPERIMENTAL 0x01F1 /* just a number */ | |
99 | //#define ETH_P_EXPERIMENTAL 0x0012 /* make it the size of the packet */ | |
100 | #define EXPERIMENTAL_MAGIC 0xf1f23f4f | |
101 | ||
102 | static int announce_self_create(uint8_t *buf, | |
103 | uint8_t *mac_addr) | |
104 | { | |
105 | uint32_t magic = EXPERIMENTAL_MAGIC; | |
106 | uint16_t proto = htons(ETH_P_EXPERIMENTAL); | |
107 | ||
108 | /* FIXME: should we send a different packet (arp/rarp/ping)? */ | |
109 | ||
110 | memset(buf, 0xff, 6); /* h_dst */ | |
111 | memcpy(buf + 6, mac_addr, 6); /* h_src */ | |
112 | memcpy(buf + 12, &proto, 2); /* h_proto */ | |
113 | memcpy(buf + 14, &magic, 4); /* magic */ | |
114 | ||
115 | return 18; /* len */ | |
116 | } | |
117 | ||
118 | void qemu_announce_self(void) | |
119 | { | |
120 | int i, j, len; | |
121 | VLANState *vlan; | |
122 | VLANClientState *vc; | |
123 | uint8_t buf[256]; | |
124 | ||
125 | for (i = 0; i < nb_nics; i++) { | |
126 | len = announce_self_create(buf, nd_table[i].macaddr); | |
127 | vlan = nd_table[i].vlan; | |
128 | for(vc = vlan->first_client; vc != NULL; vc = vc->next) { | |
129 | for (j=0; j < SELF_ANNOUNCE_ROUNDS; j++) | |
130 | vc->fd_read(vc->opaque, buf, len); | |
131 | } | |
132 | } | |
133 | } | |
134 | ||
135 | /***********************************************************/ | |
136 | /* savevm/loadvm support */ | |
137 | ||
138 | #define IO_BUF_SIZE 32768 | |
139 | ||
140 | struct QEMUFile { | |
141 | QEMUFilePutBufferFunc *put_buffer; | |
142 | QEMUFileGetBufferFunc *get_buffer; | |
143 | QEMUFileCloseFunc *close; | |
144 | QEMUFileRateLimit *rate_limit; | |
145 | void *opaque; | |
146 | int is_write; | |
147 | ||
148 | int64_t buf_offset; /* start of buffer when writing, end of buffer | |
149 | when reading */ | |
150 | int buf_index; | |
151 | int buf_size; /* 0 when writing */ | |
152 | uint8_t buf[IO_BUF_SIZE]; | |
153 | ||
154 | int has_error; | |
155 | }; | |
156 | ||
157 | typedef struct QEMUFilePopen | |
158 | { | |
159 | FILE *popen_file; | |
160 | QEMUFile *file; | |
161 | } QEMUFilePopen; | |
162 | ||
163 | typedef struct QEMUFileSocket | |
164 | { | |
165 | int fd; | |
166 | QEMUFile *file; | |
167 | } QEMUFileSocket; | |
168 | ||
169 | static int socket_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) | |
170 | { | |
171 | QEMUFileSocket *s = opaque; | |
172 | ssize_t len; | |
173 | ||
174 | do { | |
175 | len = recv(s->fd, buf, size, 0); | |
176 | } while (len == -1 && socket_error() == EINTR); | |
177 | ||
178 | if (len == -1) | |
179 | len = -socket_error(); | |
180 | ||
181 | return len; | |
182 | } | |
183 | ||
184 | static int socket_close(void *opaque) | |
185 | { | |
186 | QEMUFileSocket *s = opaque; | |
187 | qemu_free(s); | |
188 | return 0; | |
189 | } | |
190 | ||
191 | static int popen_put_buffer(void *opaque, const uint8_t *buf, int64_t pos, int size) | |
192 | { | |
193 | QEMUFilePopen *s = opaque; | |
194 | return fwrite(buf, 1, size, s->popen_file); | |
195 | } | |
196 | ||
197 | static int popen_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) | |
198 | { | |
199 | QEMUFilePopen *s = opaque; | |
200 | return fread(buf, 1, size, s->popen_file); | |
201 | } | |
202 | ||
203 | static int popen_close(void *opaque) | |
204 | { | |
205 | QEMUFilePopen *s = opaque; | |
206 | pclose(s->popen_file); | |
207 | qemu_free(s); | |
208 | return 0; | |
209 | } | |
210 | ||
211 | QEMUFile *qemu_popen(FILE *popen_file, const char *mode) | |
212 | { | |
213 | QEMUFilePopen *s; | |
214 | ||
215 | if (popen_file == NULL || mode == NULL || (mode[0] != 'r' && mode[0] != 'w') || mode[1] != 0) { | |
216 | fprintf(stderr, "qemu_popen: Argument validity check failed\n"); | |
217 | return NULL; | |
218 | } | |
219 | ||
220 | s = qemu_mallocz(sizeof(QEMUFilePopen)); | |
a672b469 AL |
221 | |
222 | s->popen_file = popen_file; | |
223 | ||
224 | if(mode[0] == 'r') { | |
225 | s->file = qemu_fopen_ops(s, NULL, popen_get_buffer, popen_close, NULL); | |
226 | } else { | |
227 | s->file = qemu_fopen_ops(s, popen_put_buffer, NULL, popen_close, NULL); | |
228 | } | |
229 | fprintf(stderr, "qemu_popen: returning result of qemu_fopen_ops\n"); | |
230 | return s->file; | |
231 | } | |
232 | ||
233 | QEMUFile *qemu_popen_cmd(const char *command, const char *mode) | |
234 | { | |
235 | FILE *popen_file; | |
236 | ||
237 | popen_file = popen(command, mode); | |
238 | if(popen_file == NULL) { | |
239 | return NULL; | |
240 | } | |
241 | ||
242 | return qemu_popen(popen_file, mode); | |
243 | } | |
244 | ||
245 | QEMUFile *qemu_fopen_socket(int fd) | |
246 | { | |
247 | QEMUFileSocket *s = qemu_mallocz(sizeof(QEMUFileSocket)); | |
248 | ||
a672b469 AL |
249 | s->fd = fd; |
250 | s->file = qemu_fopen_ops(s, NULL, socket_get_buffer, socket_close, NULL); | |
251 | return s->file; | |
252 | } | |
253 | ||
254 | typedef struct QEMUFileStdio | |
255 | { | |
256 | FILE *outfile; | |
257 | } QEMUFileStdio; | |
258 | ||
259 | static int file_put_buffer(void *opaque, const uint8_t *buf, | |
260 | int64_t pos, int size) | |
261 | { | |
262 | QEMUFileStdio *s = opaque; | |
263 | fseek(s->outfile, pos, SEEK_SET); | |
264 | fwrite(buf, 1, size, s->outfile); | |
265 | return size; | |
266 | } | |
267 | ||
268 | static int file_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) | |
269 | { | |
270 | QEMUFileStdio *s = opaque; | |
271 | fseek(s->outfile, pos, SEEK_SET); | |
272 | return fread(buf, 1, size, s->outfile); | |
273 | } | |
274 | ||
275 | static int file_close(void *opaque) | |
276 | { | |
277 | QEMUFileStdio *s = opaque; | |
278 | fclose(s->outfile); | |
279 | qemu_free(s); | |
280 | return 0; | |
281 | } | |
282 | ||
283 | QEMUFile *qemu_fopen(const char *filename, const char *mode) | |
284 | { | |
285 | QEMUFileStdio *s; | |
286 | ||
287 | s = qemu_mallocz(sizeof(QEMUFileStdio)); | |
a672b469 AL |
288 | |
289 | s->outfile = fopen(filename, mode); | |
290 | if (!s->outfile) | |
291 | goto fail; | |
292 | ||
293 | if (!strcmp(mode, "wb")) | |
294 | return qemu_fopen_ops(s, file_put_buffer, NULL, file_close, NULL); | |
295 | else if (!strcmp(mode, "rb")) | |
296 | return qemu_fopen_ops(s, NULL, file_get_buffer, file_close, NULL); | |
297 | ||
298 | fail: | |
299 | if (s->outfile) | |
300 | fclose(s->outfile); | |
301 | qemu_free(s); | |
302 | return NULL; | |
303 | } | |
304 | ||
305 | typedef struct QEMUFileBdrv | |
306 | { | |
307 | BlockDriverState *bs; | |
308 | int64_t base_offset; | |
309 | } QEMUFileBdrv; | |
310 | ||
311 | static int bdrv_put_buffer(void *opaque, const uint8_t *buf, | |
312 | int64_t pos, int size) | |
313 | { | |
314 | QEMUFileBdrv *s = opaque; | |
315 | bdrv_pwrite(s->bs, s->base_offset + pos, buf, size); | |
316 | return size; | |
317 | } | |
318 | ||
319 | static int bdrv_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) | |
320 | { | |
321 | QEMUFileBdrv *s = opaque; | |
322 | return bdrv_pread(s->bs, s->base_offset + pos, buf, size); | |
323 | } | |
324 | ||
325 | static int bdrv_fclose(void *opaque) | |
326 | { | |
327 | QEMUFileBdrv *s = opaque; | |
328 | qemu_free(s); | |
329 | return 0; | |
330 | } | |
331 | ||
332 | static QEMUFile *qemu_fopen_bdrv(BlockDriverState *bs, int64_t offset, int is_writable) | |
333 | { | |
334 | QEMUFileBdrv *s; | |
335 | ||
336 | s = qemu_mallocz(sizeof(QEMUFileBdrv)); | |
a672b469 AL |
337 | |
338 | s->bs = bs; | |
339 | s->base_offset = offset; | |
340 | ||
341 | if (is_writable) | |
342 | return qemu_fopen_ops(s, bdrv_put_buffer, NULL, bdrv_fclose, NULL); | |
343 | ||
344 | return qemu_fopen_ops(s, NULL, bdrv_get_buffer, bdrv_fclose, NULL); | |
345 | } | |
346 | ||
347 | QEMUFile *qemu_fopen_ops(void *opaque, QEMUFilePutBufferFunc *put_buffer, | |
348 | QEMUFileGetBufferFunc *get_buffer, | |
349 | QEMUFileCloseFunc *close, | |
350 | QEMUFileRateLimit *rate_limit) | |
351 | { | |
352 | QEMUFile *f; | |
353 | ||
354 | f = qemu_mallocz(sizeof(QEMUFile)); | |
a672b469 AL |
355 | |
356 | f->opaque = opaque; | |
357 | f->put_buffer = put_buffer; | |
358 | f->get_buffer = get_buffer; | |
359 | f->close = close; | |
360 | f->rate_limit = rate_limit; | |
361 | f->is_write = 0; | |
362 | ||
363 | return f; | |
364 | } | |
365 | ||
366 | int qemu_file_has_error(QEMUFile *f) | |
367 | { | |
368 | return f->has_error; | |
369 | } | |
370 | ||
371 | void qemu_fflush(QEMUFile *f) | |
372 | { | |
373 | if (!f->put_buffer) | |
374 | return; | |
375 | ||
376 | if (f->is_write && f->buf_index > 0) { | |
377 | int len; | |
378 | ||
379 | len = f->put_buffer(f->opaque, f->buf, f->buf_offset, f->buf_index); | |
380 | if (len > 0) | |
381 | f->buf_offset += f->buf_index; | |
382 | else | |
383 | f->has_error = 1; | |
384 | f->buf_index = 0; | |
385 | } | |
386 | } | |
387 | ||
388 | static void qemu_fill_buffer(QEMUFile *f) | |
389 | { | |
390 | int len; | |
391 | ||
392 | if (!f->get_buffer) | |
393 | return; | |
394 | ||
395 | if (f->is_write) | |
396 | abort(); | |
397 | ||
398 | len = f->get_buffer(f->opaque, f->buf, f->buf_offset, IO_BUF_SIZE); | |
399 | if (len > 0) { | |
400 | f->buf_index = 0; | |
401 | f->buf_size = len; | |
402 | f->buf_offset += len; | |
403 | } else if (len != -EAGAIN) | |
404 | f->has_error = 1; | |
405 | } | |
406 | ||
407 | int qemu_fclose(QEMUFile *f) | |
408 | { | |
409 | int ret = 0; | |
410 | qemu_fflush(f); | |
411 | if (f->close) | |
412 | ret = f->close(f->opaque); | |
413 | qemu_free(f); | |
414 | return ret; | |
415 | } | |
416 | ||
417 | void qemu_file_put_notify(QEMUFile *f) | |
418 | { | |
419 | f->put_buffer(f->opaque, NULL, 0, 0); | |
420 | } | |
421 | ||
422 | void qemu_put_buffer(QEMUFile *f, const uint8_t *buf, int size) | |
423 | { | |
424 | int l; | |
425 | ||
426 | if (!f->has_error && f->is_write == 0 && f->buf_index > 0) { | |
427 | fprintf(stderr, | |
428 | "Attempted to write to buffer while read buffer is not empty\n"); | |
429 | abort(); | |
430 | } | |
431 | ||
432 | while (!f->has_error && size > 0) { | |
433 | l = IO_BUF_SIZE - f->buf_index; | |
434 | if (l > size) | |
435 | l = size; | |
436 | memcpy(f->buf + f->buf_index, buf, l); | |
437 | f->is_write = 1; | |
438 | f->buf_index += l; | |
439 | buf += l; | |
440 | size -= l; | |
441 | if (f->buf_index >= IO_BUF_SIZE) | |
442 | qemu_fflush(f); | |
443 | } | |
444 | } | |
445 | ||
446 | void qemu_put_byte(QEMUFile *f, int v) | |
447 | { | |
448 | if (!f->has_error && f->is_write == 0 && f->buf_index > 0) { | |
449 | fprintf(stderr, | |
450 | "Attempted to write to buffer while read buffer is not empty\n"); | |
451 | abort(); | |
452 | } | |
453 | ||
454 | f->buf[f->buf_index++] = v; | |
455 | f->is_write = 1; | |
456 | if (f->buf_index >= IO_BUF_SIZE) | |
457 | qemu_fflush(f); | |
458 | } | |
459 | ||
460 | int qemu_get_buffer(QEMUFile *f, uint8_t *buf, int size1) | |
461 | { | |
462 | int size, l; | |
463 | ||
464 | if (f->is_write) | |
465 | abort(); | |
466 | ||
467 | size = size1; | |
468 | while (size > 0) { | |
469 | l = f->buf_size - f->buf_index; | |
470 | if (l == 0) { | |
471 | qemu_fill_buffer(f); | |
472 | l = f->buf_size - f->buf_index; | |
473 | if (l == 0) | |
474 | break; | |
475 | } | |
476 | if (l > size) | |
477 | l = size; | |
478 | memcpy(buf, f->buf + f->buf_index, l); | |
479 | f->buf_index += l; | |
480 | buf += l; | |
481 | size -= l; | |
482 | } | |
483 | return size1 - size; | |
484 | } | |
485 | ||
486 | int qemu_get_byte(QEMUFile *f) | |
487 | { | |
488 | if (f->is_write) | |
489 | abort(); | |
490 | ||
491 | if (f->buf_index >= f->buf_size) { | |
492 | qemu_fill_buffer(f); | |
493 | if (f->buf_index >= f->buf_size) | |
494 | return 0; | |
495 | } | |
496 | return f->buf[f->buf_index++]; | |
497 | } | |
498 | ||
499 | int64_t qemu_ftell(QEMUFile *f) | |
500 | { | |
501 | return f->buf_offset - f->buf_size + f->buf_index; | |
502 | } | |
503 | ||
504 | int64_t qemu_fseek(QEMUFile *f, int64_t pos, int whence) | |
505 | { | |
506 | if (whence == SEEK_SET) { | |
507 | /* nothing to do */ | |
508 | } else if (whence == SEEK_CUR) { | |
509 | pos += qemu_ftell(f); | |
510 | } else { | |
511 | /* SEEK_END not supported */ | |
512 | return -1; | |
513 | } | |
514 | if (f->put_buffer) { | |
515 | qemu_fflush(f); | |
516 | f->buf_offset = pos; | |
517 | } else { | |
518 | f->buf_offset = pos; | |
519 | f->buf_index = 0; | |
520 | f->buf_size = 0; | |
521 | } | |
522 | return pos; | |
523 | } | |
524 | ||
525 | int qemu_file_rate_limit(QEMUFile *f) | |
526 | { | |
527 | if (f->rate_limit) | |
528 | return f->rate_limit(f->opaque); | |
529 | ||
530 | return 0; | |
531 | } | |
532 | ||
533 | void qemu_put_be16(QEMUFile *f, unsigned int v) | |
534 | { | |
535 | qemu_put_byte(f, v >> 8); | |
536 | qemu_put_byte(f, v); | |
537 | } | |
538 | ||
539 | void qemu_put_be32(QEMUFile *f, unsigned int v) | |
540 | { | |
541 | qemu_put_byte(f, v >> 24); | |
542 | qemu_put_byte(f, v >> 16); | |
543 | qemu_put_byte(f, v >> 8); | |
544 | qemu_put_byte(f, v); | |
545 | } | |
546 | ||
547 | void qemu_put_be64(QEMUFile *f, uint64_t v) | |
548 | { | |
549 | qemu_put_be32(f, v >> 32); | |
550 | qemu_put_be32(f, v); | |
551 | } | |
552 | ||
553 | unsigned int qemu_get_be16(QEMUFile *f) | |
554 | { | |
555 | unsigned int v; | |
556 | v = qemu_get_byte(f) << 8; | |
557 | v |= qemu_get_byte(f); | |
558 | return v; | |
559 | } | |
560 | ||
561 | unsigned int qemu_get_be32(QEMUFile *f) | |
562 | { | |
563 | unsigned int v; | |
564 | v = qemu_get_byte(f) << 24; | |
565 | v |= qemu_get_byte(f) << 16; | |
566 | v |= qemu_get_byte(f) << 8; | |
567 | v |= qemu_get_byte(f); | |
568 | return v; | |
569 | } | |
570 | ||
571 | uint64_t qemu_get_be64(QEMUFile *f) | |
572 | { | |
573 | uint64_t v; | |
574 | v = (uint64_t)qemu_get_be32(f) << 32; | |
575 | v |= qemu_get_be32(f); | |
576 | return v; | |
577 | } | |
578 | ||
579 | typedef struct SaveStateEntry { | |
580 | char idstr[256]; | |
581 | int instance_id; | |
582 | int version_id; | |
583 | int section_id; | |
584 | SaveLiveStateHandler *save_live_state; | |
585 | SaveStateHandler *save_state; | |
586 | LoadStateHandler *load_state; | |
587 | void *opaque; | |
588 | struct SaveStateEntry *next; | |
589 | } SaveStateEntry; | |
590 | ||
591 | static SaveStateEntry *first_se; | |
592 | ||
593 | /* TODO: Individual devices generally have very little idea about the rest | |
594 | of the system, so instance_id should be removed/replaced. | |
595 | Meanwhile pass -1 as instance_id if you do not already have a clearly | |
596 | distinguishing id for all instances of your device class. */ | |
597 | int register_savevm_live(const char *idstr, | |
598 | int instance_id, | |
599 | int version_id, | |
600 | SaveLiveStateHandler *save_live_state, | |
601 | SaveStateHandler *save_state, | |
602 | LoadStateHandler *load_state, | |
603 | void *opaque) | |
604 | { | |
605 | SaveStateEntry *se, **pse; | |
606 | static int global_section_id; | |
607 | ||
608 | se = qemu_malloc(sizeof(SaveStateEntry)); | |
a672b469 AL |
609 | pstrcpy(se->idstr, sizeof(se->idstr), idstr); |
610 | se->instance_id = (instance_id == -1) ? 0 : instance_id; | |
611 | se->version_id = version_id; | |
612 | se->section_id = global_section_id++; | |
613 | se->save_live_state = save_live_state; | |
614 | se->save_state = save_state; | |
615 | se->load_state = load_state; | |
616 | se->opaque = opaque; | |
617 | se->next = NULL; | |
618 | ||
619 | /* add at the end of list */ | |
620 | pse = &first_se; | |
621 | while (*pse != NULL) { | |
622 | if (instance_id == -1 | |
623 | && strcmp(se->idstr, (*pse)->idstr) == 0 | |
624 | && se->instance_id <= (*pse)->instance_id) | |
625 | se->instance_id = (*pse)->instance_id + 1; | |
626 | pse = &(*pse)->next; | |
627 | } | |
628 | *pse = se; | |
629 | return 0; | |
630 | } | |
631 | ||
632 | int register_savevm(const char *idstr, | |
633 | int instance_id, | |
634 | int version_id, | |
635 | SaveStateHandler *save_state, | |
636 | LoadStateHandler *load_state, | |
637 | void *opaque) | |
638 | { | |
639 | return register_savevm_live(idstr, instance_id, version_id, | |
640 | NULL, save_state, load_state, opaque); | |
641 | } | |
642 | ||
643 | #define QEMU_VM_FILE_MAGIC 0x5145564d | |
644 | #define QEMU_VM_FILE_VERSION_COMPAT 0x00000002 | |
645 | #define QEMU_VM_FILE_VERSION 0x00000003 | |
646 | ||
647 | #define QEMU_VM_EOF 0x00 | |
648 | #define QEMU_VM_SECTION_START 0x01 | |
649 | #define QEMU_VM_SECTION_PART 0x02 | |
650 | #define QEMU_VM_SECTION_END 0x03 | |
651 | #define QEMU_VM_SECTION_FULL 0x04 | |
652 | ||
653 | int qemu_savevm_state_begin(QEMUFile *f) | |
654 | { | |
655 | SaveStateEntry *se; | |
656 | ||
657 | qemu_put_be32(f, QEMU_VM_FILE_MAGIC); | |
658 | qemu_put_be32(f, QEMU_VM_FILE_VERSION); | |
659 | ||
660 | for (se = first_se; se != NULL; se = se->next) { | |
661 | int len; | |
662 | ||
663 | if (se->save_live_state == NULL) | |
664 | continue; | |
665 | ||
666 | /* Section type */ | |
667 | qemu_put_byte(f, QEMU_VM_SECTION_START); | |
668 | qemu_put_be32(f, se->section_id); | |
669 | ||
670 | /* ID string */ | |
671 | len = strlen(se->idstr); | |
672 | qemu_put_byte(f, len); | |
673 | qemu_put_buffer(f, (uint8_t *)se->idstr, len); | |
674 | ||
675 | qemu_put_be32(f, se->instance_id); | |
676 | qemu_put_be32(f, se->version_id); | |
677 | ||
678 | se->save_live_state(f, QEMU_VM_SECTION_START, se->opaque); | |
679 | } | |
680 | ||
681 | if (qemu_file_has_error(f)) | |
682 | return -EIO; | |
683 | ||
684 | return 0; | |
685 | } | |
686 | ||
687 | int qemu_savevm_state_iterate(QEMUFile *f) | |
688 | { | |
689 | SaveStateEntry *se; | |
690 | int ret = 1; | |
691 | ||
692 | for (se = first_se; se != NULL; se = se->next) { | |
693 | if (se->save_live_state == NULL) | |
694 | continue; | |
695 | ||
696 | /* Section type */ | |
697 | qemu_put_byte(f, QEMU_VM_SECTION_PART); | |
698 | qemu_put_be32(f, se->section_id); | |
699 | ||
700 | ret &= !!se->save_live_state(f, QEMU_VM_SECTION_PART, se->opaque); | |
701 | } | |
702 | ||
703 | if (ret) | |
704 | return 1; | |
705 | ||
706 | if (qemu_file_has_error(f)) | |
707 | return -EIO; | |
708 | ||
709 | return 0; | |
710 | } | |
711 | ||
712 | int qemu_savevm_state_complete(QEMUFile *f) | |
713 | { | |
714 | SaveStateEntry *se; | |
715 | ||
716 | for (se = first_se; se != NULL; se = se->next) { | |
717 | if (se->save_live_state == NULL) | |
718 | continue; | |
719 | ||
720 | /* Section type */ | |
721 | qemu_put_byte(f, QEMU_VM_SECTION_END); | |
722 | qemu_put_be32(f, se->section_id); | |
723 | ||
724 | se->save_live_state(f, QEMU_VM_SECTION_END, se->opaque); | |
725 | } | |
726 | ||
727 | for(se = first_se; se != NULL; se = se->next) { | |
728 | int len; | |
729 | ||
730 | if (se->save_state == NULL) | |
731 | continue; | |
732 | ||
733 | /* Section type */ | |
734 | qemu_put_byte(f, QEMU_VM_SECTION_FULL); | |
735 | qemu_put_be32(f, se->section_id); | |
736 | ||
737 | /* ID string */ | |
738 | len = strlen(se->idstr); | |
739 | qemu_put_byte(f, len); | |
740 | qemu_put_buffer(f, (uint8_t *)se->idstr, len); | |
741 | ||
742 | qemu_put_be32(f, se->instance_id); | |
743 | qemu_put_be32(f, se->version_id); | |
744 | ||
745 | se->save_state(f, se->opaque); | |
746 | } | |
747 | ||
748 | qemu_put_byte(f, QEMU_VM_EOF); | |
749 | ||
750 | if (qemu_file_has_error(f)) | |
751 | return -EIO; | |
752 | ||
753 | return 0; | |
754 | } | |
755 | ||
756 | int qemu_savevm_state(QEMUFile *f) | |
757 | { | |
758 | int saved_vm_running; | |
759 | int ret; | |
760 | ||
761 | saved_vm_running = vm_running; | |
762 | vm_stop(0); | |
763 | ||
764 | bdrv_flush_all(); | |
765 | ||
766 | ret = qemu_savevm_state_begin(f); | |
767 | if (ret < 0) | |
768 | goto out; | |
769 | ||
770 | do { | |
771 | ret = qemu_savevm_state_iterate(f); | |
772 | if (ret < 0) | |
773 | goto out; | |
774 | } while (ret == 0); | |
775 | ||
776 | ret = qemu_savevm_state_complete(f); | |
777 | ||
778 | out: | |
779 | if (qemu_file_has_error(f)) | |
780 | ret = -EIO; | |
781 | ||
782 | if (!ret && saved_vm_running) | |
783 | vm_start(); | |
784 | ||
785 | return ret; | |
786 | } | |
787 | ||
788 | static SaveStateEntry *find_se(const char *idstr, int instance_id) | |
789 | { | |
790 | SaveStateEntry *se; | |
791 | ||
792 | for(se = first_se; se != NULL; se = se->next) { | |
793 | if (!strcmp(se->idstr, idstr) && | |
794 | instance_id == se->instance_id) | |
795 | return se; | |
796 | } | |
797 | return NULL; | |
798 | } | |
799 | ||
800 | typedef struct LoadStateEntry { | |
801 | SaveStateEntry *se; | |
802 | int section_id; | |
803 | int version_id; | |
804 | struct LoadStateEntry *next; | |
805 | } LoadStateEntry; | |
806 | ||
807 | static int qemu_loadvm_state_v2(QEMUFile *f) | |
808 | { | |
809 | SaveStateEntry *se; | |
810 | int len, ret, instance_id, record_len, version_id; | |
811 | int64_t total_len, end_pos, cur_pos; | |
812 | char idstr[256]; | |
813 | ||
814 | total_len = qemu_get_be64(f); | |
815 | end_pos = total_len + qemu_ftell(f); | |
816 | for(;;) { | |
817 | if (qemu_ftell(f) >= end_pos) | |
818 | break; | |
819 | len = qemu_get_byte(f); | |
820 | qemu_get_buffer(f, (uint8_t *)idstr, len); | |
821 | idstr[len] = '\0'; | |
822 | instance_id = qemu_get_be32(f); | |
823 | version_id = qemu_get_be32(f); | |
824 | record_len = qemu_get_be32(f); | |
825 | cur_pos = qemu_ftell(f); | |
826 | se = find_se(idstr, instance_id); | |
827 | if (!se) { | |
828 | fprintf(stderr, "qemu: warning: instance 0x%x of device '%s' not present in current VM\n", | |
829 | instance_id, idstr); | |
830 | } else { | |
831 | ret = se->load_state(f, se->opaque, version_id); | |
832 | if (ret < 0) { | |
833 | fprintf(stderr, "qemu: warning: error while loading state for instance 0x%x of device '%s'\n", | |
834 | instance_id, idstr); | |
835 | } | |
836 | } | |
837 | /* always seek to exact end of record */ | |
838 | qemu_fseek(f, cur_pos + record_len, SEEK_SET); | |
839 | } | |
840 | ||
841 | if (qemu_file_has_error(f)) | |
842 | return -EIO; | |
843 | ||
844 | return 0; | |
845 | } | |
846 | ||
847 | int qemu_loadvm_state(QEMUFile *f) | |
848 | { | |
849 | LoadStateEntry *first_le = NULL; | |
850 | uint8_t section_type; | |
851 | unsigned int v; | |
852 | int ret; | |
853 | ||
854 | v = qemu_get_be32(f); | |
855 | if (v != QEMU_VM_FILE_MAGIC) | |
856 | return -EINVAL; | |
857 | ||
858 | v = qemu_get_be32(f); | |
859 | if (v == QEMU_VM_FILE_VERSION_COMPAT) | |
860 | return qemu_loadvm_state_v2(f); | |
861 | if (v != QEMU_VM_FILE_VERSION) | |
862 | return -ENOTSUP; | |
863 | ||
864 | while ((section_type = qemu_get_byte(f)) != QEMU_VM_EOF) { | |
865 | uint32_t instance_id, version_id, section_id; | |
866 | LoadStateEntry *le; | |
867 | SaveStateEntry *se; | |
868 | char idstr[257]; | |
869 | int len; | |
870 | ||
871 | switch (section_type) { | |
872 | case QEMU_VM_SECTION_START: | |
873 | case QEMU_VM_SECTION_FULL: | |
874 | /* Read section start */ | |
875 | section_id = qemu_get_be32(f); | |
876 | len = qemu_get_byte(f); | |
877 | qemu_get_buffer(f, (uint8_t *)idstr, len); | |
878 | idstr[len] = 0; | |
879 | instance_id = qemu_get_be32(f); | |
880 | version_id = qemu_get_be32(f); | |
881 | ||
882 | /* Find savevm section */ | |
883 | se = find_se(idstr, instance_id); | |
884 | if (se == NULL) { | |
885 | fprintf(stderr, "Unknown savevm section or instance '%s' %d\n", idstr, instance_id); | |
886 | ret = -EINVAL; | |
887 | goto out; | |
888 | } | |
889 | ||
890 | /* Validate version */ | |
891 | if (version_id > se->version_id) { | |
892 | fprintf(stderr, "savevm: unsupported version %d for '%s' v%d\n", | |
893 | version_id, idstr, se->version_id); | |
894 | ret = -EINVAL; | |
895 | goto out; | |
896 | } | |
897 | ||
898 | /* Add entry */ | |
899 | le = qemu_mallocz(sizeof(*le)); | |
a672b469 AL |
900 | |
901 | le->se = se; | |
902 | le->section_id = section_id; | |
903 | le->version_id = version_id; | |
904 | le->next = first_le; | |
905 | first_le = le; | |
906 | ||
907 | le->se->load_state(f, le->se->opaque, le->version_id); | |
908 | break; | |
909 | case QEMU_VM_SECTION_PART: | |
910 | case QEMU_VM_SECTION_END: | |
911 | section_id = qemu_get_be32(f); | |
912 | ||
913 | for (le = first_le; le && le->section_id != section_id; le = le->next); | |
914 | if (le == NULL) { | |
915 | fprintf(stderr, "Unknown savevm section %d\n", section_id); | |
916 | ret = -EINVAL; | |
917 | goto out; | |
918 | } | |
919 | ||
920 | le->se->load_state(f, le->se->opaque, le->version_id); | |
921 | break; | |
922 | default: | |
923 | fprintf(stderr, "Unknown savevm section type %d\n", section_type); | |
924 | ret = -EINVAL; | |
925 | goto out; | |
926 | } | |
927 | } | |
928 | ||
929 | ret = 0; | |
930 | ||
931 | out: | |
932 | while (first_le) { | |
933 | LoadStateEntry *le = first_le; | |
934 | first_le = first_le->next; | |
935 | qemu_free(le); | |
936 | } | |
937 | ||
938 | if (qemu_file_has_error(f)) | |
939 | ret = -EIO; | |
940 | ||
941 | return ret; | |
942 | } | |
943 | ||
944 | /* device can contain snapshots */ | |
945 | static int bdrv_can_snapshot(BlockDriverState *bs) | |
946 | { | |
947 | return (bs && | |
948 | !bdrv_is_removable(bs) && | |
949 | !bdrv_is_read_only(bs)); | |
950 | } | |
951 | ||
952 | /* device must be snapshots in order to have a reliable snapshot */ | |
953 | static int bdrv_has_snapshot(BlockDriverState *bs) | |
954 | { | |
955 | return (bs && | |
956 | !bdrv_is_removable(bs) && | |
957 | !bdrv_is_read_only(bs)); | |
958 | } | |
959 | ||
960 | static BlockDriverState *get_bs_snapshots(void) | |
961 | { | |
962 | BlockDriverState *bs; | |
963 | int i; | |
964 | ||
965 | if (bs_snapshots) | |
966 | return bs_snapshots; | |
967 | for(i = 0; i <= nb_drives; i++) { | |
968 | bs = drives_table[i].bdrv; | |
969 | if (bdrv_can_snapshot(bs)) | |
970 | goto ok; | |
971 | } | |
972 | return NULL; | |
973 | ok: | |
974 | bs_snapshots = bs; | |
975 | return bs; | |
976 | } | |
977 | ||
978 | static int bdrv_snapshot_find(BlockDriverState *bs, QEMUSnapshotInfo *sn_info, | |
979 | const char *name) | |
980 | { | |
981 | QEMUSnapshotInfo *sn_tab, *sn; | |
982 | int nb_sns, i, ret; | |
983 | ||
984 | ret = -ENOENT; | |
985 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
986 | if (nb_sns < 0) | |
987 | return ret; | |
988 | for(i = 0; i < nb_sns; i++) { | |
989 | sn = &sn_tab[i]; | |
990 | if (!strcmp(sn->id_str, name) || !strcmp(sn->name, name)) { | |
991 | *sn_info = *sn; | |
992 | ret = 0; | |
993 | break; | |
994 | } | |
995 | } | |
996 | qemu_free(sn_tab); | |
997 | return ret; | |
998 | } | |
999 | ||
376253ec | 1000 | void do_savevm(Monitor *mon, const char *name) |
a672b469 AL |
1001 | { |
1002 | BlockDriverState *bs, *bs1; | |
1003 | QEMUSnapshotInfo sn1, *sn = &sn1, old_sn1, *old_sn = &old_sn1; | |
1004 | int must_delete, ret, i; | |
1005 | BlockDriverInfo bdi1, *bdi = &bdi1; | |
1006 | QEMUFile *f; | |
1007 | int saved_vm_running; | |
2d22b18f | 1008 | uint32_t vm_state_size; |
a672b469 AL |
1009 | #ifdef _WIN32 |
1010 | struct _timeb tb; | |
1011 | #else | |
1012 | struct timeval tv; | |
1013 | #endif | |
1014 | ||
1015 | bs = get_bs_snapshots(); | |
1016 | if (!bs) { | |
376253ec | 1017 | monitor_printf(mon, "No block device can accept snapshots\n"); |
a672b469 AL |
1018 | return; |
1019 | } | |
1020 | ||
1021 | /* ??? Should this occur after vm_stop? */ | |
1022 | qemu_aio_flush(); | |
1023 | ||
1024 | saved_vm_running = vm_running; | |
1025 | vm_stop(0); | |
1026 | ||
1027 | must_delete = 0; | |
1028 | if (name) { | |
1029 | ret = bdrv_snapshot_find(bs, old_sn, name); | |
1030 | if (ret >= 0) { | |
1031 | must_delete = 1; | |
1032 | } | |
1033 | } | |
1034 | memset(sn, 0, sizeof(*sn)); | |
1035 | if (must_delete) { | |
1036 | pstrcpy(sn->name, sizeof(sn->name), old_sn->name); | |
1037 | pstrcpy(sn->id_str, sizeof(sn->id_str), old_sn->id_str); | |
1038 | } else { | |
1039 | if (name) | |
1040 | pstrcpy(sn->name, sizeof(sn->name), name); | |
1041 | } | |
1042 | ||
1043 | /* fill auxiliary fields */ | |
1044 | #ifdef _WIN32 | |
1045 | _ftime(&tb); | |
1046 | sn->date_sec = tb.time; | |
1047 | sn->date_nsec = tb.millitm * 1000000; | |
1048 | #else | |
1049 | gettimeofday(&tv, NULL); | |
1050 | sn->date_sec = tv.tv_sec; | |
1051 | sn->date_nsec = tv.tv_usec * 1000; | |
1052 | #endif | |
1053 | sn->vm_clock_nsec = qemu_get_clock(vm_clock); | |
1054 | ||
1055 | if (bdrv_get_info(bs, bdi) < 0 || bdi->vm_state_offset <= 0) { | |
376253ec AL |
1056 | monitor_printf(mon, "Device %s does not support VM state snapshots\n", |
1057 | bdrv_get_device_name(bs)); | |
a672b469 AL |
1058 | goto the_end; |
1059 | } | |
1060 | ||
1061 | /* save the VM state */ | |
1062 | f = qemu_fopen_bdrv(bs, bdi->vm_state_offset, 1); | |
1063 | if (!f) { | |
376253ec | 1064 | monitor_printf(mon, "Could not open VM state file\n"); |
a672b469 AL |
1065 | goto the_end; |
1066 | } | |
1067 | ret = qemu_savevm_state(f); | |
2d22b18f | 1068 | vm_state_size = qemu_ftell(f); |
a672b469 AL |
1069 | qemu_fclose(f); |
1070 | if (ret < 0) { | |
376253ec | 1071 | monitor_printf(mon, "Error %d while writing VM\n", ret); |
a672b469 AL |
1072 | goto the_end; |
1073 | } | |
1074 | ||
1075 | /* create the snapshots */ | |
1076 | ||
1077 | for(i = 0; i < nb_drives; i++) { | |
1078 | bs1 = drives_table[i].bdrv; | |
1079 | if (bdrv_has_snapshot(bs1)) { | |
1080 | if (must_delete) { | |
1081 | ret = bdrv_snapshot_delete(bs1, old_sn->id_str); | |
1082 | if (ret < 0) { | |
376253ec AL |
1083 | monitor_printf(mon, |
1084 | "Error while deleting snapshot on '%s'\n", | |
1085 | bdrv_get_device_name(bs1)); | |
a672b469 AL |
1086 | } |
1087 | } | |
2d22b18f AL |
1088 | /* Write VM state size only to the image that contains the state */ |
1089 | sn->vm_state_size = (bs == bs1 ? vm_state_size : 0); | |
a672b469 AL |
1090 | ret = bdrv_snapshot_create(bs1, sn); |
1091 | if (ret < 0) { | |
376253ec AL |
1092 | monitor_printf(mon, "Error while creating snapshot on '%s'\n", |
1093 | bdrv_get_device_name(bs1)); | |
a672b469 AL |
1094 | } |
1095 | } | |
1096 | } | |
1097 | ||
1098 | the_end: | |
1099 | if (saved_vm_running) | |
1100 | vm_start(); | |
1101 | } | |
1102 | ||
376253ec | 1103 | void do_loadvm(Monitor *mon, const char *name) |
a672b469 AL |
1104 | { |
1105 | BlockDriverState *bs, *bs1; | |
1106 | BlockDriverInfo bdi1, *bdi = &bdi1; | |
2d22b18f | 1107 | QEMUSnapshotInfo sn; |
a672b469 AL |
1108 | QEMUFile *f; |
1109 | int i, ret; | |
1110 | int saved_vm_running; | |
1111 | ||
1112 | bs = get_bs_snapshots(); | |
1113 | if (!bs) { | |
376253ec | 1114 | monitor_printf(mon, "No block device supports snapshots\n"); |
a672b469 AL |
1115 | return; |
1116 | } | |
1117 | ||
1118 | /* Flush all IO requests so they don't interfere with the new state. */ | |
1119 | qemu_aio_flush(); | |
1120 | ||
1121 | saved_vm_running = vm_running; | |
1122 | vm_stop(0); | |
1123 | ||
1124 | for(i = 0; i <= nb_drives; i++) { | |
1125 | bs1 = drives_table[i].bdrv; | |
1126 | if (bdrv_has_snapshot(bs1)) { | |
1127 | ret = bdrv_snapshot_goto(bs1, name); | |
1128 | if (ret < 0) { | |
1129 | if (bs != bs1) | |
376253ec | 1130 | monitor_printf(mon, "Warning: "); |
a672b469 AL |
1131 | switch(ret) { |
1132 | case -ENOTSUP: | |
376253ec AL |
1133 | monitor_printf(mon, |
1134 | "Snapshots not supported on device '%s'\n", | |
1135 | bdrv_get_device_name(bs1)); | |
a672b469 AL |
1136 | break; |
1137 | case -ENOENT: | |
376253ec AL |
1138 | monitor_printf(mon, "Could not find snapshot '%s' on " |
1139 | "device '%s'\n", | |
1140 | name, bdrv_get_device_name(bs1)); | |
a672b469 AL |
1141 | break; |
1142 | default: | |
376253ec AL |
1143 | monitor_printf(mon, "Error %d while activating snapshot on" |
1144 | " '%s'\n", ret, bdrv_get_device_name(bs1)); | |
a672b469 AL |
1145 | break; |
1146 | } | |
1147 | /* fatal on snapshot block device */ | |
1148 | if (bs == bs1) | |
1149 | goto the_end; | |
1150 | } | |
1151 | } | |
1152 | } | |
1153 | ||
1154 | if (bdrv_get_info(bs, bdi) < 0 || bdi->vm_state_offset <= 0) { | |
376253ec AL |
1155 | monitor_printf(mon, "Device %s does not support VM state snapshots\n", |
1156 | bdrv_get_device_name(bs)); | |
a672b469 AL |
1157 | return; |
1158 | } | |
1159 | ||
2d22b18f AL |
1160 | /* Don't even try to load empty VM states */ |
1161 | ret = bdrv_snapshot_find(bs, &sn, name); | |
1162 | if ((ret >= 0) && (sn.vm_state_size == 0)) | |
1163 | goto the_end; | |
1164 | ||
a672b469 AL |
1165 | /* restore the VM state */ |
1166 | f = qemu_fopen_bdrv(bs, bdi->vm_state_offset, 0); | |
1167 | if (!f) { | |
376253ec | 1168 | monitor_printf(mon, "Could not open VM state file\n"); |
a672b469 AL |
1169 | goto the_end; |
1170 | } | |
1171 | ret = qemu_loadvm_state(f); | |
1172 | qemu_fclose(f); | |
1173 | if (ret < 0) { | |
376253ec | 1174 | monitor_printf(mon, "Error %d while loading VM state\n", ret); |
a672b469 AL |
1175 | } |
1176 | the_end: | |
1177 | if (saved_vm_running) | |
1178 | vm_start(); | |
1179 | } | |
1180 | ||
376253ec | 1181 | void do_delvm(Monitor *mon, const char *name) |
a672b469 AL |
1182 | { |
1183 | BlockDriverState *bs, *bs1; | |
1184 | int i, ret; | |
1185 | ||
1186 | bs = get_bs_snapshots(); | |
1187 | if (!bs) { | |
376253ec | 1188 | monitor_printf(mon, "No block device supports snapshots\n"); |
a672b469 AL |
1189 | return; |
1190 | } | |
1191 | ||
1192 | for(i = 0; i <= nb_drives; i++) { | |
1193 | bs1 = drives_table[i].bdrv; | |
1194 | if (bdrv_has_snapshot(bs1)) { | |
1195 | ret = bdrv_snapshot_delete(bs1, name); | |
1196 | if (ret < 0) { | |
1197 | if (ret == -ENOTSUP) | |
376253ec AL |
1198 | monitor_printf(mon, |
1199 | "Snapshots not supported on device '%s'\n", | |
1200 | bdrv_get_device_name(bs1)); | |
a672b469 | 1201 | else |
376253ec AL |
1202 | monitor_printf(mon, "Error %d while deleting snapshot on " |
1203 | "'%s'\n", ret, bdrv_get_device_name(bs1)); | |
a672b469 AL |
1204 | } |
1205 | } | |
1206 | } | |
1207 | } | |
1208 | ||
376253ec | 1209 | void do_info_snapshots(Monitor *mon) |
a672b469 AL |
1210 | { |
1211 | BlockDriverState *bs, *bs1; | |
1212 | QEMUSnapshotInfo *sn_tab, *sn; | |
1213 | int nb_sns, i; | |
1214 | char buf[256]; | |
1215 | ||
1216 | bs = get_bs_snapshots(); | |
1217 | if (!bs) { | |
376253ec | 1218 | monitor_printf(mon, "No available block device supports snapshots\n"); |
a672b469 AL |
1219 | return; |
1220 | } | |
376253ec | 1221 | monitor_printf(mon, "Snapshot devices:"); |
a672b469 AL |
1222 | for(i = 0; i <= nb_drives; i++) { |
1223 | bs1 = drives_table[i].bdrv; | |
1224 | if (bdrv_has_snapshot(bs1)) { | |
1225 | if (bs == bs1) | |
376253ec | 1226 | monitor_printf(mon, " %s", bdrv_get_device_name(bs1)); |
a672b469 AL |
1227 | } |
1228 | } | |
376253ec | 1229 | monitor_printf(mon, "\n"); |
a672b469 AL |
1230 | |
1231 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
1232 | if (nb_sns < 0) { | |
376253ec | 1233 | monitor_printf(mon, "bdrv_snapshot_list: error %d\n", nb_sns); |
a672b469 AL |
1234 | return; |
1235 | } | |
376253ec AL |
1236 | monitor_printf(mon, "Snapshot list (from %s):\n", |
1237 | bdrv_get_device_name(bs)); | |
1238 | monitor_printf(mon, "%s\n", bdrv_snapshot_dump(buf, sizeof(buf), NULL)); | |
a672b469 AL |
1239 | for(i = 0; i < nb_sns; i++) { |
1240 | sn = &sn_tab[i]; | |
376253ec | 1241 | monitor_printf(mon, "%s\n", bdrv_snapshot_dump(buf, sizeof(buf), sn)); |
a672b469 AL |
1242 | } |
1243 | qemu_free(sn_tab); | |
1244 | } |