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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 | ||
3450df30 AL |
125 | for (i = 0; i < MAX_NICS; i++) { |
126 | if (!nd_table[i].used) | |
127 | continue; | |
a672b469 AL |
128 | len = announce_self_create(buf, nd_table[i].macaddr); |
129 | vlan = nd_table[i].vlan; | |
130 | for(vc = vlan->first_client; vc != NULL; vc = vc->next) { | |
131 | for (j=0; j < SELF_ANNOUNCE_ROUNDS; j++) | |
132 | vc->fd_read(vc->opaque, buf, len); | |
133 | } | |
134 | } | |
135 | } | |
136 | ||
137 | /***********************************************************/ | |
138 | /* savevm/loadvm support */ | |
139 | ||
140 | #define IO_BUF_SIZE 32768 | |
141 | ||
142 | struct QEMUFile { | |
143 | QEMUFilePutBufferFunc *put_buffer; | |
144 | QEMUFileGetBufferFunc *get_buffer; | |
145 | QEMUFileCloseFunc *close; | |
146 | QEMUFileRateLimit *rate_limit; | |
147 | void *opaque; | |
148 | int is_write; | |
149 | ||
150 | int64_t buf_offset; /* start of buffer when writing, end of buffer | |
151 | when reading */ | |
152 | int buf_index; | |
153 | int buf_size; /* 0 when writing */ | |
154 | uint8_t buf[IO_BUF_SIZE]; | |
155 | ||
156 | int has_error; | |
157 | }; | |
158 | ||
159 | typedef struct QEMUFilePopen | |
160 | { | |
161 | FILE *popen_file; | |
162 | QEMUFile *file; | |
163 | } QEMUFilePopen; | |
164 | ||
165 | typedef struct QEMUFileSocket | |
166 | { | |
167 | int fd; | |
168 | QEMUFile *file; | |
169 | } QEMUFileSocket; | |
170 | ||
171 | static int socket_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) | |
172 | { | |
173 | QEMUFileSocket *s = opaque; | |
174 | ssize_t len; | |
175 | ||
176 | do { | |
177 | len = recv(s->fd, buf, size, 0); | |
178 | } while (len == -1 && socket_error() == EINTR); | |
179 | ||
180 | if (len == -1) | |
181 | len = -socket_error(); | |
182 | ||
183 | return len; | |
184 | } | |
185 | ||
186 | static int socket_close(void *opaque) | |
187 | { | |
188 | QEMUFileSocket *s = opaque; | |
189 | qemu_free(s); | |
190 | return 0; | |
191 | } | |
192 | ||
193 | static int popen_put_buffer(void *opaque, const uint8_t *buf, int64_t pos, int size) | |
194 | { | |
195 | QEMUFilePopen *s = opaque; | |
196 | return fwrite(buf, 1, size, s->popen_file); | |
197 | } | |
198 | ||
199 | static int popen_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) | |
200 | { | |
201 | QEMUFilePopen *s = opaque; | |
202 | return fread(buf, 1, size, s->popen_file); | |
203 | } | |
204 | ||
205 | static int popen_close(void *opaque) | |
206 | { | |
207 | QEMUFilePopen *s = opaque; | |
208 | pclose(s->popen_file); | |
209 | qemu_free(s); | |
210 | return 0; | |
211 | } | |
212 | ||
213 | QEMUFile *qemu_popen(FILE *popen_file, const char *mode) | |
214 | { | |
215 | QEMUFilePopen *s; | |
216 | ||
217 | if (popen_file == NULL || mode == NULL || (mode[0] != 'r' && mode[0] != 'w') || mode[1] != 0) { | |
218 | fprintf(stderr, "qemu_popen: Argument validity check failed\n"); | |
219 | return NULL; | |
220 | } | |
221 | ||
222 | s = qemu_mallocz(sizeof(QEMUFilePopen)); | |
a672b469 AL |
223 | |
224 | s->popen_file = popen_file; | |
225 | ||
226 | if(mode[0] == 'r') { | |
227 | s->file = qemu_fopen_ops(s, NULL, popen_get_buffer, popen_close, NULL); | |
228 | } else { | |
229 | s->file = qemu_fopen_ops(s, popen_put_buffer, NULL, popen_close, NULL); | |
230 | } | |
231 | fprintf(stderr, "qemu_popen: returning result of qemu_fopen_ops\n"); | |
232 | return s->file; | |
233 | } | |
234 | ||
235 | QEMUFile *qemu_popen_cmd(const char *command, const char *mode) | |
236 | { | |
237 | FILE *popen_file; | |
238 | ||
239 | popen_file = popen(command, mode); | |
240 | if(popen_file == NULL) { | |
241 | return NULL; | |
242 | } | |
243 | ||
244 | return qemu_popen(popen_file, mode); | |
245 | } | |
246 | ||
247 | QEMUFile *qemu_fopen_socket(int fd) | |
248 | { | |
249 | QEMUFileSocket *s = qemu_mallocz(sizeof(QEMUFileSocket)); | |
250 | ||
a672b469 AL |
251 | s->fd = fd; |
252 | s->file = qemu_fopen_ops(s, NULL, socket_get_buffer, socket_close, NULL); | |
253 | return s->file; | |
254 | } | |
255 | ||
256 | typedef struct QEMUFileStdio | |
257 | { | |
258 | FILE *outfile; | |
259 | } QEMUFileStdio; | |
260 | ||
261 | static int file_put_buffer(void *opaque, const uint8_t *buf, | |
262 | int64_t pos, int size) | |
263 | { | |
264 | QEMUFileStdio *s = opaque; | |
265 | fseek(s->outfile, pos, SEEK_SET); | |
266 | fwrite(buf, 1, size, s->outfile); | |
267 | return size; | |
268 | } | |
269 | ||
270 | static int file_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) | |
271 | { | |
272 | QEMUFileStdio *s = opaque; | |
273 | fseek(s->outfile, pos, SEEK_SET); | |
274 | return fread(buf, 1, size, s->outfile); | |
275 | } | |
276 | ||
277 | static int file_close(void *opaque) | |
278 | { | |
279 | QEMUFileStdio *s = opaque; | |
280 | fclose(s->outfile); | |
281 | qemu_free(s); | |
282 | return 0; | |
283 | } | |
284 | ||
285 | QEMUFile *qemu_fopen(const char *filename, const char *mode) | |
286 | { | |
287 | QEMUFileStdio *s; | |
288 | ||
289 | s = qemu_mallocz(sizeof(QEMUFileStdio)); | |
a672b469 AL |
290 | |
291 | s->outfile = fopen(filename, mode); | |
292 | if (!s->outfile) | |
293 | goto fail; | |
294 | ||
295 | if (!strcmp(mode, "wb")) | |
296 | return qemu_fopen_ops(s, file_put_buffer, NULL, file_close, NULL); | |
297 | else if (!strcmp(mode, "rb")) | |
298 | return qemu_fopen_ops(s, NULL, file_get_buffer, file_close, NULL); | |
299 | ||
300 | fail: | |
301 | if (s->outfile) | |
302 | fclose(s->outfile); | |
303 | qemu_free(s); | |
304 | return NULL; | |
305 | } | |
306 | ||
307 | typedef struct QEMUFileBdrv | |
308 | { | |
309 | BlockDriverState *bs; | |
310 | int64_t base_offset; | |
311 | } QEMUFileBdrv; | |
312 | ||
178e08a5 | 313 | static int block_put_buffer(void *opaque, const uint8_t *buf, |
a672b469 AL |
314 | int64_t pos, int size) |
315 | { | |
316 | QEMUFileBdrv *s = opaque; | |
178e08a5 | 317 | bdrv_put_buffer(s->bs, buf, s->base_offset + pos, size); |
a672b469 AL |
318 | return size; |
319 | } | |
320 | ||
178e08a5 | 321 | static int block_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) |
a672b469 AL |
322 | { |
323 | QEMUFileBdrv *s = opaque; | |
178e08a5 | 324 | return bdrv_get_buffer(s->bs, buf, s->base_offset + pos, size); |
a672b469 AL |
325 | } |
326 | ||
327 | static int bdrv_fclose(void *opaque) | |
328 | { | |
329 | QEMUFileBdrv *s = opaque; | |
330 | qemu_free(s); | |
331 | return 0; | |
332 | } | |
333 | ||
334 | static QEMUFile *qemu_fopen_bdrv(BlockDriverState *bs, int64_t offset, int is_writable) | |
335 | { | |
336 | QEMUFileBdrv *s; | |
337 | ||
338 | s = qemu_mallocz(sizeof(QEMUFileBdrv)); | |
a672b469 AL |
339 | |
340 | s->bs = bs; | |
341 | s->base_offset = offset; | |
342 | ||
343 | if (is_writable) | |
178e08a5 | 344 | return qemu_fopen_ops(s, block_put_buffer, NULL, bdrv_fclose, NULL); |
a672b469 | 345 | |
178e08a5 | 346 | return qemu_fopen_ops(s, NULL, block_get_buffer, bdrv_fclose, NULL); |
a672b469 AL |
347 | } |
348 | ||
349 | QEMUFile *qemu_fopen_ops(void *opaque, QEMUFilePutBufferFunc *put_buffer, | |
350 | QEMUFileGetBufferFunc *get_buffer, | |
351 | QEMUFileCloseFunc *close, | |
352 | QEMUFileRateLimit *rate_limit) | |
353 | { | |
354 | QEMUFile *f; | |
355 | ||
356 | f = qemu_mallocz(sizeof(QEMUFile)); | |
a672b469 AL |
357 | |
358 | f->opaque = opaque; | |
359 | f->put_buffer = put_buffer; | |
360 | f->get_buffer = get_buffer; | |
361 | f->close = close; | |
362 | f->rate_limit = rate_limit; | |
363 | f->is_write = 0; | |
364 | ||
365 | return f; | |
366 | } | |
367 | ||
368 | int qemu_file_has_error(QEMUFile *f) | |
369 | { | |
370 | return f->has_error; | |
371 | } | |
372 | ||
373 | void qemu_fflush(QEMUFile *f) | |
374 | { | |
375 | if (!f->put_buffer) | |
376 | return; | |
377 | ||
378 | if (f->is_write && f->buf_index > 0) { | |
379 | int len; | |
380 | ||
381 | len = f->put_buffer(f->opaque, f->buf, f->buf_offset, f->buf_index); | |
382 | if (len > 0) | |
383 | f->buf_offset += f->buf_index; | |
384 | else | |
385 | f->has_error = 1; | |
386 | f->buf_index = 0; | |
387 | } | |
388 | } | |
389 | ||
390 | static void qemu_fill_buffer(QEMUFile *f) | |
391 | { | |
392 | int len; | |
393 | ||
394 | if (!f->get_buffer) | |
395 | return; | |
396 | ||
397 | if (f->is_write) | |
398 | abort(); | |
399 | ||
400 | len = f->get_buffer(f->opaque, f->buf, f->buf_offset, IO_BUF_SIZE); | |
401 | if (len > 0) { | |
402 | f->buf_index = 0; | |
403 | f->buf_size = len; | |
404 | f->buf_offset += len; | |
405 | } else if (len != -EAGAIN) | |
406 | f->has_error = 1; | |
407 | } | |
408 | ||
409 | int qemu_fclose(QEMUFile *f) | |
410 | { | |
411 | int ret = 0; | |
412 | qemu_fflush(f); | |
413 | if (f->close) | |
414 | ret = f->close(f->opaque); | |
415 | qemu_free(f); | |
416 | return ret; | |
417 | } | |
418 | ||
419 | void qemu_file_put_notify(QEMUFile *f) | |
420 | { | |
421 | f->put_buffer(f->opaque, NULL, 0, 0); | |
422 | } | |
423 | ||
424 | void qemu_put_buffer(QEMUFile *f, const uint8_t *buf, int size) | |
425 | { | |
426 | int l; | |
427 | ||
428 | if (!f->has_error && f->is_write == 0 && f->buf_index > 0) { | |
429 | fprintf(stderr, | |
430 | "Attempted to write to buffer while read buffer is not empty\n"); | |
431 | abort(); | |
432 | } | |
433 | ||
434 | while (!f->has_error && size > 0) { | |
435 | l = IO_BUF_SIZE - f->buf_index; | |
436 | if (l > size) | |
437 | l = size; | |
438 | memcpy(f->buf + f->buf_index, buf, l); | |
439 | f->is_write = 1; | |
440 | f->buf_index += l; | |
441 | buf += l; | |
442 | size -= l; | |
443 | if (f->buf_index >= IO_BUF_SIZE) | |
444 | qemu_fflush(f); | |
445 | } | |
446 | } | |
447 | ||
448 | void qemu_put_byte(QEMUFile *f, int v) | |
449 | { | |
450 | if (!f->has_error && f->is_write == 0 && f->buf_index > 0) { | |
451 | fprintf(stderr, | |
452 | "Attempted to write to buffer while read buffer is not empty\n"); | |
453 | abort(); | |
454 | } | |
455 | ||
456 | f->buf[f->buf_index++] = v; | |
457 | f->is_write = 1; | |
458 | if (f->buf_index >= IO_BUF_SIZE) | |
459 | qemu_fflush(f); | |
460 | } | |
461 | ||
462 | int qemu_get_buffer(QEMUFile *f, uint8_t *buf, int size1) | |
463 | { | |
464 | int size, l; | |
465 | ||
466 | if (f->is_write) | |
467 | abort(); | |
468 | ||
469 | size = size1; | |
470 | while (size > 0) { | |
471 | l = f->buf_size - f->buf_index; | |
472 | if (l == 0) { | |
473 | qemu_fill_buffer(f); | |
474 | l = f->buf_size - f->buf_index; | |
475 | if (l == 0) | |
476 | break; | |
477 | } | |
478 | if (l > size) | |
479 | l = size; | |
480 | memcpy(buf, f->buf + f->buf_index, l); | |
481 | f->buf_index += l; | |
482 | buf += l; | |
483 | size -= l; | |
484 | } | |
485 | return size1 - size; | |
486 | } | |
487 | ||
488 | int qemu_get_byte(QEMUFile *f) | |
489 | { | |
490 | if (f->is_write) | |
491 | abort(); | |
492 | ||
493 | if (f->buf_index >= f->buf_size) { | |
494 | qemu_fill_buffer(f); | |
495 | if (f->buf_index >= f->buf_size) | |
496 | return 0; | |
497 | } | |
498 | return f->buf[f->buf_index++]; | |
499 | } | |
500 | ||
501 | int64_t qemu_ftell(QEMUFile *f) | |
502 | { | |
503 | return f->buf_offset - f->buf_size + f->buf_index; | |
504 | } | |
505 | ||
506 | int64_t qemu_fseek(QEMUFile *f, int64_t pos, int whence) | |
507 | { | |
508 | if (whence == SEEK_SET) { | |
509 | /* nothing to do */ | |
510 | } else if (whence == SEEK_CUR) { | |
511 | pos += qemu_ftell(f); | |
512 | } else { | |
513 | /* SEEK_END not supported */ | |
514 | return -1; | |
515 | } | |
516 | if (f->put_buffer) { | |
517 | qemu_fflush(f); | |
518 | f->buf_offset = pos; | |
519 | } else { | |
520 | f->buf_offset = pos; | |
521 | f->buf_index = 0; | |
522 | f->buf_size = 0; | |
523 | } | |
524 | return pos; | |
525 | } | |
526 | ||
527 | int qemu_file_rate_limit(QEMUFile *f) | |
528 | { | |
529 | if (f->rate_limit) | |
530 | return f->rate_limit(f->opaque); | |
531 | ||
532 | return 0; | |
533 | } | |
534 | ||
535 | void qemu_put_be16(QEMUFile *f, unsigned int v) | |
536 | { | |
537 | qemu_put_byte(f, v >> 8); | |
538 | qemu_put_byte(f, v); | |
539 | } | |
540 | ||
541 | void qemu_put_be32(QEMUFile *f, unsigned int v) | |
542 | { | |
543 | qemu_put_byte(f, v >> 24); | |
544 | qemu_put_byte(f, v >> 16); | |
545 | qemu_put_byte(f, v >> 8); | |
546 | qemu_put_byte(f, v); | |
547 | } | |
548 | ||
549 | void qemu_put_be64(QEMUFile *f, uint64_t v) | |
550 | { | |
551 | qemu_put_be32(f, v >> 32); | |
552 | qemu_put_be32(f, v); | |
553 | } | |
554 | ||
555 | unsigned int qemu_get_be16(QEMUFile *f) | |
556 | { | |
557 | unsigned int v; | |
558 | v = qemu_get_byte(f) << 8; | |
559 | v |= qemu_get_byte(f); | |
560 | return v; | |
561 | } | |
562 | ||
563 | unsigned int qemu_get_be32(QEMUFile *f) | |
564 | { | |
565 | unsigned int v; | |
566 | v = qemu_get_byte(f) << 24; | |
567 | v |= qemu_get_byte(f) << 16; | |
568 | v |= qemu_get_byte(f) << 8; | |
569 | v |= qemu_get_byte(f); | |
570 | return v; | |
571 | } | |
572 | ||
573 | uint64_t qemu_get_be64(QEMUFile *f) | |
574 | { | |
575 | uint64_t v; | |
576 | v = (uint64_t)qemu_get_be32(f) << 32; | |
577 | v |= qemu_get_be32(f); | |
578 | return v; | |
579 | } | |
580 | ||
581 | typedef struct SaveStateEntry { | |
582 | char idstr[256]; | |
583 | int instance_id; | |
584 | int version_id; | |
585 | int section_id; | |
586 | SaveLiveStateHandler *save_live_state; | |
587 | SaveStateHandler *save_state; | |
588 | LoadStateHandler *load_state; | |
589 | void *opaque; | |
590 | struct SaveStateEntry *next; | |
591 | } SaveStateEntry; | |
592 | ||
593 | static SaveStateEntry *first_se; | |
594 | ||
595 | /* TODO: Individual devices generally have very little idea about the rest | |
596 | of the system, so instance_id should be removed/replaced. | |
597 | Meanwhile pass -1 as instance_id if you do not already have a clearly | |
598 | distinguishing id for all instances of your device class. */ | |
599 | int register_savevm_live(const char *idstr, | |
600 | int instance_id, | |
601 | int version_id, | |
602 | SaveLiveStateHandler *save_live_state, | |
603 | SaveStateHandler *save_state, | |
604 | LoadStateHandler *load_state, | |
605 | void *opaque) | |
606 | { | |
607 | SaveStateEntry *se, **pse; | |
608 | static int global_section_id; | |
609 | ||
610 | se = qemu_malloc(sizeof(SaveStateEntry)); | |
a672b469 AL |
611 | pstrcpy(se->idstr, sizeof(se->idstr), idstr); |
612 | se->instance_id = (instance_id == -1) ? 0 : instance_id; | |
613 | se->version_id = version_id; | |
614 | se->section_id = global_section_id++; | |
615 | se->save_live_state = save_live_state; | |
616 | se->save_state = save_state; | |
617 | se->load_state = load_state; | |
618 | se->opaque = opaque; | |
619 | se->next = NULL; | |
620 | ||
621 | /* add at the end of list */ | |
622 | pse = &first_se; | |
623 | while (*pse != NULL) { | |
624 | if (instance_id == -1 | |
625 | && strcmp(se->idstr, (*pse)->idstr) == 0 | |
626 | && se->instance_id <= (*pse)->instance_id) | |
627 | se->instance_id = (*pse)->instance_id + 1; | |
628 | pse = &(*pse)->next; | |
629 | } | |
630 | *pse = se; | |
631 | return 0; | |
632 | } | |
633 | ||
634 | int register_savevm(const char *idstr, | |
635 | int instance_id, | |
636 | int version_id, | |
637 | SaveStateHandler *save_state, | |
638 | LoadStateHandler *load_state, | |
639 | void *opaque) | |
640 | { | |
641 | return register_savevm_live(idstr, instance_id, version_id, | |
642 | NULL, save_state, load_state, opaque); | |
643 | } | |
644 | ||
645 | #define QEMU_VM_FILE_MAGIC 0x5145564d | |
646 | #define QEMU_VM_FILE_VERSION_COMPAT 0x00000002 | |
647 | #define QEMU_VM_FILE_VERSION 0x00000003 | |
648 | ||
649 | #define QEMU_VM_EOF 0x00 | |
650 | #define QEMU_VM_SECTION_START 0x01 | |
651 | #define QEMU_VM_SECTION_PART 0x02 | |
652 | #define QEMU_VM_SECTION_END 0x03 | |
653 | #define QEMU_VM_SECTION_FULL 0x04 | |
654 | ||
655 | int qemu_savevm_state_begin(QEMUFile *f) | |
656 | { | |
657 | SaveStateEntry *se; | |
658 | ||
659 | qemu_put_be32(f, QEMU_VM_FILE_MAGIC); | |
660 | qemu_put_be32(f, QEMU_VM_FILE_VERSION); | |
661 | ||
662 | for (se = first_se; se != NULL; se = se->next) { | |
663 | int len; | |
664 | ||
665 | if (se->save_live_state == NULL) | |
666 | continue; | |
667 | ||
668 | /* Section type */ | |
669 | qemu_put_byte(f, QEMU_VM_SECTION_START); | |
670 | qemu_put_be32(f, se->section_id); | |
671 | ||
672 | /* ID string */ | |
673 | len = strlen(se->idstr); | |
674 | qemu_put_byte(f, len); | |
675 | qemu_put_buffer(f, (uint8_t *)se->idstr, len); | |
676 | ||
677 | qemu_put_be32(f, se->instance_id); | |
678 | qemu_put_be32(f, se->version_id); | |
679 | ||
680 | se->save_live_state(f, QEMU_VM_SECTION_START, se->opaque); | |
681 | } | |
682 | ||
683 | if (qemu_file_has_error(f)) | |
684 | return -EIO; | |
685 | ||
686 | return 0; | |
687 | } | |
688 | ||
689 | int qemu_savevm_state_iterate(QEMUFile *f) | |
690 | { | |
691 | SaveStateEntry *se; | |
692 | int ret = 1; | |
693 | ||
694 | for (se = first_se; se != NULL; se = se->next) { | |
695 | if (se->save_live_state == NULL) | |
696 | continue; | |
697 | ||
698 | /* Section type */ | |
699 | qemu_put_byte(f, QEMU_VM_SECTION_PART); | |
700 | qemu_put_be32(f, se->section_id); | |
701 | ||
702 | ret &= !!se->save_live_state(f, QEMU_VM_SECTION_PART, se->opaque); | |
703 | } | |
704 | ||
705 | if (ret) | |
706 | return 1; | |
707 | ||
708 | if (qemu_file_has_error(f)) | |
709 | return -EIO; | |
710 | ||
711 | return 0; | |
712 | } | |
713 | ||
714 | int qemu_savevm_state_complete(QEMUFile *f) | |
715 | { | |
716 | SaveStateEntry *se; | |
717 | ||
718 | for (se = first_se; se != NULL; se = se->next) { | |
719 | if (se->save_live_state == NULL) | |
720 | continue; | |
721 | ||
722 | /* Section type */ | |
723 | qemu_put_byte(f, QEMU_VM_SECTION_END); | |
724 | qemu_put_be32(f, se->section_id); | |
725 | ||
726 | se->save_live_state(f, QEMU_VM_SECTION_END, se->opaque); | |
727 | } | |
728 | ||
729 | for(se = first_se; se != NULL; se = se->next) { | |
730 | int len; | |
731 | ||
732 | if (se->save_state == NULL) | |
733 | continue; | |
734 | ||
735 | /* Section type */ | |
736 | qemu_put_byte(f, QEMU_VM_SECTION_FULL); | |
737 | qemu_put_be32(f, se->section_id); | |
738 | ||
739 | /* ID string */ | |
740 | len = strlen(se->idstr); | |
741 | qemu_put_byte(f, len); | |
742 | qemu_put_buffer(f, (uint8_t *)se->idstr, len); | |
743 | ||
744 | qemu_put_be32(f, se->instance_id); | |
745 | qemu_put_be32(f, se->version_id); | |
746 | ||
747 | se->save_state(f, se->opaque); | |
748 | } | |
749 | ||
750 | qemu_put_byte(f, QEMU_VM_EOF); | |
751 | ||
752 | if (qemu_file_has_error(f)) | |
753 | return -EIO; | |
754 | ||
755 | return 0; | |
756 | } | |
757 | ||
758 | int qemu_savevm_state(QEMUFile *f) | |
759 | { | |
760 | int saved_vm_running; | |
761 | int ret; | |
762 | ||
763 | saved_vm_running = vm_running; | |
764 | vm_stop(0); | |
765 | ||
766 | bdrv_flush_all(); | |
767 | ||
768 | ret = qemu_savevm_state_begin(f); | |
769 | if (ret < 0) | |
770 | goto out; | |
771 | ||
772 | do { | |
773 | ret = qemu_savevm_state_iterate(f); | |
774 | if (ret < 0) | |
775 | goto out; | |
776 | } while (ret == 0); | |
777 | ||
778 | ret = qemu_savevm_state_complete(f); | |
779 | ||
780 | out: | |
781 | if (qemu_file_has_error(f)) | |
782 | ret = -EIO; | |
783 | ||
784 | if (!ret && saved_vm_running) | |
785 | vm_start(); | |
786 | ||
787 | return ret; | |
788 | } | |
789 | ||
790 | static SaveStateEntry *find_se(const char *idstr, int instance_id) | |
791 | { | |
792 | SaveStateEntry *se; | |
793 | ||
794 | for(se = first_se; se != NULL; se = se->next) { | |
795 | if (!strcmp(se->idstr, idstr) && | |
796 | instance_id == se->instance_id) | |
797 | return se; | |
798 | } | |
799 | return NULL; | |
800 | } | |
801 | ||
802 | typedef struct LoadStateEntry { | |
803 | SaveStateEntry *se; | |
804 | int section_id; | |
805 | int version_id; | |
806 | struct LoadStateEntry *next; | |
807 | } LoadStateEntry; | |
808 | ||
809 | static int qemu_loadvm_state_v2(QEMUFile *f) | |
810 | { | |
811 | SaveStateEntry *se; | |
812 | int len, ret, instance_id, record_len, version_id; | |
813 | int64_t total_len, end_pos, cur_pos; | |
814 | char idstr[256]; | |
815 | ||
816 | total_len = qemu_get_be64(f); | |
817 | end_pos = total_len + qemu_ftell(f); | |
818 | for(;;) { | |
819 | if (qemu_ftell(f) >= end_pos) | |
820 | break; | |
821 | len = qemu_get_byte(f); | |
822 | qemu_get_buffer(f, (uint8_t *)idstr, len); | |
823 | idstr[len] = '\0'; | |
824 | instance_id = qemu_get_be32(f); | |
825 | version_id = qemu_get_be32(f); | |
826 | record_len = qemu_get_be32(f); | |
827 | cur_pos = qemu_ftell(f); | |
828 | se = find_se(idstr, instance_id); | |
829 | if (!se) { | |
830 | fprintf(stderr, "qemu: warning: instance 0x%x of device '%s' not present in current VM\n", | |
831 | instance_id, idstr); | |
832 | } else { | |
833 | ret = se->load_state(f, se->opaque, version_id); | |
834 | if (ret < 0) { | |
835 | fprintf(stderr, "qemu: warning: error while loading state for instance 0x%x of device '%s'\n", | |
836 | instance_id, idstr); | |
837 | } | |
838 | } | |
839 | /* always seek to exact end of record */ | |
840 | qemu_fseek(f, cur_pos + record_len, SEEK_SET); | |
841 | } | |
842 | ||
843 | if (qemu_file_has_error(f)) | |
844 | return -EIO; | |
845 | ||
846 | return 0; | |
847 | } | |
848 | ||
849 | int qemu_loadvm_state(QEMUFile *f) | |
850 | { | |
851 | LoadStateEntry *first_le = NULL; | |
852 | uint8_t section_type; | |
853 | unsigned int v; | |
854 | int ret; | |
855 | ||
856 | v = qemu_get_be32(f); | |
857 | if (v != QEMU_VM_FILE_MAGIC) | |
858 | return -EINVAL; | |
859 | ||
860 | v = qemu_get_be32(f); | |
861 | if (v == QEMU_VM_FILE_VERSION_COMPAT) | |
862 | return qemu_loadvm_state_v2(f); | |
863 | if (v != QEMU_VM_FILE_VERSION) | |
864 | return -ENOTSUP; | |
865 | ||
866 | while ((section_type = qemu_get_byte(f)) != QEMU_VM_EOF) { | |
867 | uint32_t instance_id, version_id, section_id; | |
868 | LoadStateEntry *le; | |
869 | SaveStateEntry *se; | |
870 | char idstr[257]; | |
871 | int len; | |
872 | ||
873 | switch (section_type) { | |
874 | case QEMU_VM_SECTION_START: | |
875 | case QEMU_VM_SECTION_FULL: | |
876 | /* Read section start */ | |
877 | section_id = qemu_get_be32(f); | |
878 | len = qemu_get_byte(f); | |
879 | qemu_get_buffer(f, (uint8_t *)idstr, len); | |
880 | idstr[len] = 0; | |
881 | instance_id = qemu_get_be32(f); | |
882 | version_id = qemu_get_be32(f); | |
883 | ||
884 | /* Find savevm section */ | |
885 | se = find_se(idstr, instance_id); | |
886 | if (se == NULL) { | |
887 | fprintf(stderr, "Unknown savevm section or instance '%s' %d\n", idstr, instance_id); | |
888 | ret = -EINVAL; | |
889 | goto out; | |
890 | } | |
891 | ||
892 | /* Validate version */ | |
893 | if (version_id > se->version_id) { | |
894 | fprintf(stderr, "savevm: unsupported version %d for '%s' v%d\n", | |
895 | version_id, idstr, se->version_id); | |
896 | ret = -EINVAL; | |
897 | goto out; | |
898 | } | |
899 | ||
900 | /* Add entry */ | |
901 | le = qemu_mallocz(sizeof(*le)); | |
a672b469 AL |
902 | |
903 | le->se = se; | |
904 | le->section_id = section_id; | |
905 | le->version_id = version_id; | |
906 | le->next = first_le; | |
907 | first_le = le; | |
908 | ||
909 | le->se->load_state(f, le->se->opaque, le->version_id); | |
910 | break; | |
911 | case QEMU_VM_SECTION_PART: | |
912 | case QEMU_VM_SECTION_END: | |
913 | section_id = qemu_get_be32(f); | |
914 | ||
915 | for (le = first_le; le && le->section_id != section_id; le = le->next); | |
916 | if (le == NULL) { | |
917 | fprintf(stderr, "Unknown savevm section %d\n", section_id); | |
918 | ret = -EINVAL; | |
919 | goto out; | |
920 | } | |
921 | ||
922 | le->se->load_state(f, le->se->opaque, le->version_id); | |
923 | break; | |
924 | default: | |
925 | fprintf(stderr, "Unknown savevm section type %d\n", section_type); | |
926 | ret = -EINVAL; | |
927 | goto out; | |
928 | } | |
929 | } | |
930 | ||
931 | ret = 0; | |
932 | ||
933 | out: | |
934 | while (first_le) { | |
935 | LoadStateEntry *le = first_le; | |
936 | first_le = first_le->next; | |
937 | qemu_free(le); | |
938 | } | |
939 | ||
940 | if (qemu_file_has_error(f)) | |
941 | ret = -EIO; | |
942 | ||
943 | return ret; | |
944 | } | |
945 | ||
946 | /* device can contain snapshots */ | |
947 | static int bdrv_can_snapshot(BlockDriverState *bs) | |
948 | { | |
949 | return (bs && | |
950 | !bdrv_is_removable(bs) && | |
951 | !bdrv_is_read_only(bs)); | |
952 | } | |
953 | ||
954 | /* device must be snapshots in order to have a reliable snapshot */ | |
955 | static int bdrv_has_snapshot(BlockDriverState *bs) | |
956 | { | |
957 | return (bs && | |
958 | !bdrv_is_removable(bs) && | |
959 | !bdrv_is_read_only(bs)); | |
960 | } | |
961 | ||
962 | static BlockDriverState *get_bs_snapshots(void) | |
963 | { | |
964 | BlockDriverState *bs; | |
965 | int i; | |
966 | ||
967 | if (bs_snapshots) | |
968 | return bs_snapshots; | |
969 | for(i = 0; i <= nb_drives; i++) { | |
970 | bs = drives_table[i].bdrv; | |
971 | if (bdrv_can_snapshot(bs)) | |
972 | goto ok; | |
973 | } | |
974 | return NULL; | |
975 | ok: | |
976 | bs_snapshots = bs; | |
977 | return bs; | |
978 | } | |
979 | ||
980 | static int bdrv_snapshot_find(BlockDriverState *bs, QEMUSnapshotInfo *sn_info, | |
981 | const char *name) | |
982 | { | |
983 | QEMUSnapshotInfo *sn_tab, *sn; | |
984 | int nb_sns, i, ret; | |
985 | ||
986 | ret = -ENOENT; | |
987 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
988 | if (nb_sns < 0) | |
989 | return ret; | |
990 | for(i = 0; i < nb_sns; i++) { | |
991 | sn = &sn_tab[i]; | |
992 | if (!strcmp(sn->id_str, name) || !strcmp(sn->name, name)) { | |
993 | *sn_info = *sn; | |
994 | ret = 0; | |
995 | break; | |
996 | } | |
997 | } | |
998 | qemu_free(sn_tab); | |
999 | return ret; | |
1000 | } | |
1001 | ||
376253ec | 1002 | void do_savevm(Monitor *mon, const char *name) |
a672b469 AL |
1003 | { |
1004 | BlockDriverState *bs, *bs1; | |
1005 | QEMUSnapshotInfo sn1, *sn = &sn1, old_sn1, *old_sn = &old_sn1; | |
1006 | int must_delete, ret, i; | |
1007 | BlockDriverInfo bdi1, *bdi = &bdi1; | |
1008 | QEMUFile *f; | |
1009 | int saved_vm_running; | |
2d22b18f | 1010 | uint32_t vm_state_size; |
a672b469 AL |
1011 | #ifdef _WIN32 |
1012 | struct _timeb tb; | |
1013 | #else | |
1014 | struct timeval tv; | |
1015 | #endif | |
1016 | ||
1017 | bs = get_bs_snapshots(); | |
1018 | if (!bs) { | |
376253ec | 1019 | monitor_printf(mon, "No block device can accept snapshots\n"); |
a672b469 AL |
1020 | return; |
1021 | } | |
1022 | ||
1023 | /* ??? Should this occur after vm_stop? */ | |
1024 | qemu_aio_flush(); | |
1025 | ||
1026 | saved_vm_running = vm_running; | |
1027 | vm_stop(0); | |
1028 | ||
1029 | must_delete = 0; | |
1030 | if (name) { | |
1031 | ret = bdrv_snapshot_find(bs, old_sn, name); | |
1032 | if (ret >= 0) { | |
1033 | must_delete = 1; | |
1034 | } | |
1035 | } | |
1036 | memset(sn, 0, sizeof(*sn)); | |
1037 | if (must_delete) { | |
1038 | pstrcpy(sn->name, sizeof(sn->name), old_sn->name); | |
1039 | pstrcpy(sn->id_str, sizeof(sn->id_str), old_sn->id_str); | |
1040 | } else { | |
1041 | if (name) | |
1042 | pstrcpy(sn->name, sizeof(sn->name), name); | |
1043 | } | |
1044 | ||
1045 | /* fill auxiliary fields */ | |
1046 | #ifdef _WIN32 | |
1047 | _ftime(&tb); | |
1048 | sn->date_sec = tb.time; | |
1049 | sn->date_nsec = tb.millitm * 1000000; | |
1050 | #else | |
1051 | gettimeofday(&tv, NULL); | |
1052 | sn->date_sec = tv.tv_sec; | |
1053 | sn->date_nsec = tv.tv_usec * 1000; | |
1054 | #endif | |
1055 | sn->vm_clock_nsec = qemu_get_clock(vm_clock); | |
1056 | ||
1057 | if (bdrv_get_info(bs, bdi) < 0 || bdi->vm_state_offset <= 0) { | |
376253ec AL |
1058 | monitor_printf(mon, "Device %s does not support VM state snapshots\n", |
1059 | bdrv_get_device_name(bs)); | |
a672b469 AL |
1060 | goto the_end; |
1061 | } | |
1062 | ||
1063 | /* save the VM state */ | |
1064 | f = qemu_fopen_bdrv(bs, bdi->vm_state_offset, 1); | |
1065 | if (!f) { | |
376253ec | 1066 | monitor_printf(mon, "Could not open VM state file\n"); |
a672b469 AL |
1067 | goto the_end; |
1068 | } | |
1069 | ret = qemu_savevm_state(f); | |
2d22b18f | 1070 | vm_state_size = qemu_ftell(f); |
a672b469 AL |
1071 | qemu_fclose(f); |
1072 | if (ret < 0) { | |
376253ec | 1073 | monitor_printf(mon, "Error %d while writing VM\n", ret); |
a672b469 AL |
1074 | goto the_end; |
1075 | } | |
1076 | ||
1077 | /* create the snapshots */ | |
1078 | ||
1079 | for(i = 0; i < nb_drives; i++) { | |
1080 | bs1 = drives_table[i].bdrv; | |
1081 | if (bdrv_has_snapshot(bs1)) { | |
1082 | if (must_delete) { | |
1083 | ret = bdrv_snapshot_delete(bs1, old_sn->id_str); | |
1084 | if (ret < 0) { | |
376253ec AL |
1085 | monitor_printf(mon, |
1086 | "Error while deleting snapshot on '%s'\n", | |
1087 | bdrv_get_device_name(bs1)); | |
a672b469 AL |
1088 | } |
1089 | } | |
2d22b18f AL |
1090 | /* Write VM state size only to the image that contains the state */ |
1091 | sn->vm_state_size = (bs == bs1 ? vm_state_size : 0); | |
a672b469 AL |
1092 | ret = bdrv_snapshot_create(bs1, sn); |
1093 | if (ret < 0) { | |
376253ec AL |
1094 | monitor_printf(mon, "Error while creating snapshot on '%s'\n", |
1095 | bdrv_get_device_name(bs1)); | |
a672b469 AL |
1096 | } |
1097 | } | |
1098 | } | |
1099 | ||
1100 | the_end: | |
1101 | if (saved_vm_running) | |
1102 | vm_start(); | |
1103 | } | |
1104 | ||
376253ec | 1105 | void do_loadvm(Monitor *mon, const char *name) |
a672b469 AL |
1106 | { |
1107 | BlockDriverState *bs, *bs1; | |
1108 | BlockDriverInfo bdi1, *bdi = &bdi1; | |
2d22b18f | 1109 | QEMUSnapshotInfo sn; |
a672b469 AL |
1110 | QEMUFile *f; |
1111 | int i, ret; | |
1112 | int saved_vm_running; | |
1113 | ||
1114 | bs = get_bs_snapshots(); | |
1115 | if (!bs) { | |
376253ec | 1116 | monitor_printf(mon, "No block device supports snapshots\n"); |
a672b469 AL |
1117 | return; |
1118 | } | |
1119 | ||
1120 | /* Flush all IO requests so they don't interfere with the new state. */ | |
1121 | qemu_aio_flush(); | |
1122 | ||
1123 | saved_vm_running = vm_running; | |
1124 | vm_stop(0); | |
1125 | ||
1126 | for(i = 0; i <= nb_drives; i++) { | |
1127 | bs1 = drives_table[i].bdrv; | |
1128 | if (bdrv_has_snapshot(bs1)) { | |
1129 | ret = bdrv_snapshot_goto(bs1, name); | |
1130 | if (ret < 0) { | |
1131 | if (bs != bs1) | |
376253ec | 1132 | monitor_printf(mon, "Warning: "); |
a672b469 AL |
1133 | switch(ret) { |
1134 | case -ENOTSUP: | |
376253ec AL |
1135 | monitor_printf(mon, |
1136 | "Snapshots not supported on device '%s'\n", | |
1137 | bdrv_get_device_name(bs1)); | |
a672b469 AL |
1138 | break; |
1139 | case -ENOENT: | |
376253ec AL |
1140 | monitor_printf(mon, "Could not find snapshot '%s' on " |
1141 | "device '%s'\n", | |
1142 | name, bdrv_get_device_name(bs1)); | |
a672b469 AL |
1143 | break; |
1144 | default: | |
376253ec AL |
1145 | monitor_printf(mon, "Error %d while activating snapshot on" |
1146 | " '%s'\n", ret, bdrv_get_device_name(bs1)); | |
a672b469 AL |
1147 | break; |
1148 | } | |
1149 | /* fatal on snapshot block device */ | |
1150 | if (bs == bs1) | |
1151 | goto the_end; | |
1152 | } | |
1153 | } | |
1154 | } | |
1155 | ||
1156 | if (bdrv_get_info(bs, bdi) < 0 || bdi->vm_state_offset <= 0) { | |
376253ec AL |
1157 | monitor_printf(mon, "Device %s does not support VM state snapshots\n", |
1158 | bdrv_get_device_name(bs)); | |
a672b469 AL |
1159 | return; |
1160 | } | |
1161 | ||
2d22b18f AL |
1162 | /* Don't even try to load empty VM states */ |
1163 | ret = bdrv_snapshot_find(bs, &sn, name); | |
1164 | if ((ret >= 0) && (sn.vm_state_size == 0)) | |
1165 | goto the_end; | |
1166 | ||
a672b469 AL |
1167 | /* restore the VM state */ |
1168 | f = qemu_fopen_bdrv(bs, bdi->vm_state_offset, 0); | |
1169 | if (!f) { | |
376253ec | 1170 | monitor_printf(mon, "Could not open VM state file\n"); |
a672b469 AL |
1171 | goto the_end; |
1172 | } | |
1173 | ret = qemu_loadvm_state(f); | |
1174 | qemu_fclose(f); | |
1175 | if (ret < 0) { | |
376253ec | 1176 | monitor_printf(mon, "Error %d while loading VM state\n", ret); |
a672b469 AL |
1177 | } |
1178 | the_end: | |
1179 | if (saved_vm_running) | |
1180 | vm_start(); | |
1181 | } | |
1182 | ||
376253ec | 1183 | void do_delvm(Monitor *mon, const char *name) |
a672b469 AL |
1184 | { |
1185 | BlockDriverState *bs, *bs1; | |
1186 | int i, ret; | |
1187 | ||
1188 | bs = get_bs_snapshots(); | |
1189 | if (!bs) { | |
376253ec | 1190 | monitor_printf(mon, "No block device supports snapshots\n"); |
a672b469 AL |
1191 | return; |
1192 | } | |
1193 | ||
1194 | for(i = 0; i <= nb_drives; i++) { | |
1195 | bs1 = drives_table[i].bdrv; | |
1196 | if (bdrv_has_snapshot(bs1)) { | |
1197 | ret = bdrv_snapshot_delete(bs1, name); | |
1198 | if (ret < 0) { | |
1199 | if (ret == -ENOTSUP) | |
376253ec AL |
1200 | monitor_printf(mon, |
1201 | "Snapshots not supported on device '%s'\n", | |
1202 | bdrv_get_device_name(bs1)); | |
a672b469 | 1203 | else |
376253ec AL |
1204 | monitor_printf(mon, "Error %d while deleting snapshot on " |
1205 | "'%s'\n", ret, bdrv_get_device_name(bs1)); | |
a672b469 AL |
1206 | } |
1207 | } | |
1208 | } | |
1209 | } | |
1210 | ||
376253ec | 1211 | void do_info_snapshots(Monitor *mon) |
a672b469 AL |
1212 | { |
1213 | BlockDriverState *bs, *bs1; | |
1214 | QEMUSnapshotInfo *sn_tab, *sn; | |
1215 | int nb_sns, i; | |
1216 | char buf[256]; | |
1217 | ||
1218 | bs = get_bs_snapshots(); | |
1219 | if (!bs) { | |
376253ec | 1220 | monitor_printf(mon, "No available block device supports snapshots\n"); |
a672b469 AL |
1221 | return; |
1222 | } | |
376253ec | 1223 | monitor_printf(mon, "Snapshot devices:"); |
a672b469 AL |
1224 | for(i = 0; i <= nb_drives; i++) { |
1225 | bs1 = drives_table[i].bdrv; | |
1226 | if (bdrv_has_snapshot(bs1)) { | |
1227 | if (bs == bs1) | |
376253ec | 1228 | monitor_printf(mon, " %s", bdrv_get_device_name(bs1)); |
a672b469 AL |
1229 | } |
1230 | } | |
376253ec | 1231 | monitor_printf(mon, "\n"); |
a672b469 AL |
1232 | |
1233 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
1234 | if (nb_sns < 0) { | |
376253ec | 1235 | monitor_printf(mon, "bdrv_snapshot_list: error %d\n", nb_sns); |
a672b469 AL |
1236 | return; |
1237 | } | |
376253ec AL |
1238 | monitor_printf(mon, "Snapshot list (from %s):\n", |
1239 | bdrv_get_device_name(bs)); | |
1240 | monitor_printf(mon, "%s\n", bdrv_snapshot_dump(buf, sizeof(buf), NULL)); | |
a672b469 AL |
1241 | for(i = 0; i < nb_sns; i++) { |
1242 | sn = &sn_tab[i]; | |
376253ec | 1243 | monitor_printf(mon, "%s\n", bdrv_snapshot_dump(buf, sizeof(buf), sn)); |
a672b469 AL |
1244 | } |
1245 | qemu_free(sn_tab); | |
1246 | } |