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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 | ||
976305b7 | 110 | memset(buf, 0, 64); |
a672b469 AL |
111 | memset(buf, 0xff, 6); /* h_dst */ |
112 | memcpy(buf + 6, mac_addr, 6); /* h_src */ | |
113 | memcpy(buf + 12, &proto, 2); /* h_proto */ | |
114 | memcpy(buf + 14, &magic, 4); /* magic */ | |
115 | ||
976305b7 | 116 | return 64; /* len */ |
a672b469 AL |
117 | } |
118 | ||
119 | void qemu_announce_self(void) | |
120 | { | |
121 | int i, j, len; | |
122 | VLANState *vlan; | |
123 | VLANClientState *vc; | |
124 | uint8_t buf[256]; | |
125 | ||
3450df30 AL |
126 | for (i = 0; i < MAX_NICS; i++) { |
127 | if (!nd_table[i].used) | |
128 | continue; | |
a672b469 AL |
129 | len = announce_self_create(buf, nd_table[i].macaddr); |
130 | vlan = nd_table[i].vlan; | |
131 | for(vc = vlan->first_client; vc != NULL; vc = vc->next) { | |
132 | for (j=0; j < SELF_ANNOUNCE_ROUNDS; j++) | |
133 | vc->fd_read(vc->opaque, buf, len); | |
134 | } | |
135 | } | |
136 | } | |
137 | ||
138 | /***********************************************************/ | |
139 | /* savevm/loadvm support */ | |
140 | ||
141 | #define IO_BUF_SIZE 32768 | |
142 | ||
143 | struct QEMUFile { | |
144 | QEMUFilePutBufferFunc *put_buffer; | |
145 | QEMUFileGetBufferFunc *get_buffer; | |
146 | QEMUFileCloseFunc *close; | |
147 | QEMUFileRateLimit *rate_limit; | |
148 | void *opaque; | |
149 | int is_write; | |
150 | ||
151 | int64_t buf_offset; /* start of buffer when writing, end of buffer | |
152 | when reading */ | |
153 | int buf_index; | |
154 | int buf_size; /* 0 when writing */ | |
155 | uint8_t buf[IO_BUF_SIZE]; | |
156 | ||
157 | int has_error; | |
158 | }; | |
159 | ||
160 | typedef struct QEMUFilePopen | |
161 | { | |
162 | FILE *popen_file; | |
163 | QEMUFile *file; | |
164 | } QEMUFilePopen; | |
165 | ||
166 | typedef struct QEMUFileSocket | |
167 | { | |
168 | int fd; | |
169 | QEMUFile *file; | |
170 | } QEMUFileSocket; | |
171 | ||
172 | static int socket_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) | |
173 | { | |
174 | QEMUFileSocket *s = opaque; | |
175 | ssize_t len; | |
176 | ||
177 | do { | |
178 | len = recv(s->fd, buf, size, 0); | |
179 | } while (len == -1 && socket_error() == EINTR); | |
180 | ||
181 | if (len == -1) | |
182 | len = -socket_error(); | |
183 | ||
184 | return len; | |
185 | } | |
186 | ||
187 | static int socket_close(void *opaque) | |
188 | { | |
189 | QEMUFileSocket *s = opaque; | |
190 | qemu_free(s); | |
191 | return 0; | |
192 | } | |
193 | ||
194 | static int popen_put_buffer(void *opaque, const uint8_t *buf, int64_t pos, int size) | |
195 | { | |
196 | QEMUFilePopen *s = opaque; | |
197 | return fwrite(buf, 1, size, s->popen_file); | |
198 | } | |
199 | ||
200 | static int popen_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) | |
201 | { | |
202 | QEMUFilePopen *s = opaque; | |
203 | return fread(buf, 1, size, s->popen_file); | |
204 | } | |
205 | ||
206 | static int popen_close(void *opaque) | |
207 | { | |
208 | QEMUFilePopen *s = opaque; | |
209 | pclose(s->popen_file); | |
210 | qemu_free(s); | |
211 | return 0; | |
212 | } | |
213 | ||
214 | QEMUFile *qemu_popen(FILE *popen_file, const char *mode) | |
215 | { | |
216 | QEMUFilePopen *s; | |
217 | ||
218 | if (popen_file == NULL || mode == NULL || (mode[0] != 'r' && mode[0] != 'w') || mode[1] != 0) { | |
219 | fprintf(stderr, "qemu_popen: Argument validity check failed\n"); | |
220 | return NULL; | |
221 | } | |
222 | ||
223 | s = qemu_mallocz(sizeof(QEMUFilePopen)); | |
a672b469 AL |
224 | |
225 | s->popen_file = popen_file; | |
226 | ||
227 | if(mode[0] == 'r') { | |
228 | s->file = qemu_fopen_ops(s, NULL, popen_get_buffer, popen_close, NULL); | |
229 | } else { | |
230 | s->file = qemu_fopen_ops(s, popen_put_buffer, NULL, popen_close, NULL); | |
231 | } | |
232 | fprintf(stderr, "qemu_popen: returning result of qemu_fopen_ops\n"); | |
233 | return s->file; | |
234 | } | |
235 | ||
236 | QEMUFile *qemu_popen_cmd(const char *command, const char *mode) | |
237 | { | |
238 | FILE *popen_file; | |
239 | ||
240 | popen_file = popen(command, mode); | |
241 | if(popen_file == NULL) { | |
242 | return NULL; | |
243 | } | |
244 | ||
245 | return qemu_popen(popen_file, mode); | |
246 | } | |
247 | ||
248 | QEMUFile *qemu_fopen_socket(int fd) | |
249 | { | |
250 | QEMUFileSocket *s = qemu_mallocz(sizeof(QEMUFileSocket)); | |
251 | ||
a672b469 AL |
252 | s->fd = fd; |
253 | s->file = qemu_fopen_ops(s, NULL, socket_get_buffer, socket_close, NULL); | |
254 | return s->file; | |
255 | } | |
256 | ||
257 | typedef struct QEMUFileStdio | |
258 | { | |
259 | FILE *outfile; | |
260 | } QEMUFileStdio; | |
261 | ||
262 | static int file_put_buffer(void *opaque, const uint8_t *buf, | |
263 | int64_t pos, int size) | |
264 | { | |
265 | QEMUFileStdio *s = opaque; | |
266 | fseek(s->outfile, pos, SEEK_SET); | |
267 | fwrite(buf, 1, size, s->outfile); | |
268 | return size; | |
269 | } | |
270 | ||
271 | static int file_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) | |
272 | { | |
273 | QEMUFileStdio *s = opaque; | |
274 | fseek(s->outfile, pos, SEEK_SET); | |
275 | return fread(buf, 1, size, s->outfile); | |
276 | } | |
277 | ||
278 | static int file_close(void *opaque) | |
279 | { | |
280 | QEMUFileStdio *s = opaque; | |
281 | fclose(s->outfile); | |
282 | qemu_free(s); | |
283 | return 0; | |
284 | } | |
285 | ||
286 | QEMUFile *qemu_fopen(const char *filename, const char *mode) | |
287 | { | |
288 | QEMUFileStdio *s; | |
289 | ||
290 | s = qemu_mallocz(sizeof(QEMUFileStdio)); | |
a672b469 AL |
291 | |
292 | s->outfile = fopen(filename, mode); | |
293 | if (!s->outfile) | |
294 | goto fail; | |
295 | ||
296 | if (!strcmp(mode, "wb")) | |
297 | return qemu_fopen_ops(s, file_put_buffer, NULL, file_close, NULL); | |
298 | else if (!strcmp(mode, "rb")) | |
299 | return qemu_fopen_ops(s, NULL, file_get_buffer, file_close, NULL); | |
300 | ||
301 | fail: | |
302 | if (s->outfile) | |
303 | fclose(s->outfile); | |
304 | qemu_free(s); | |
305 | return NULL; | |
306 | } | |
307 | ||
308 | typedef struct QEMUFileBdrv | |
309 | { | |
310 | BlockDriverState *bs; | |
311 | int64_t base_offset; | |
312 | } QEMUFileBdrv; | |
313 | ||
178e08a5 | 314 | static int block_put_buffer(void *opaque, const uint8_t *buf, |
a672b469 AL |
315 | int64_t pos, int size) |
316 | { | |
317 | QEMUFileBdrv *s = opaque; | |
178e08a5 | 318 | bdrv_put_buffer(s->bs, buf, s->base_offset + pos, size); |
a672b469 AL |
319 | return size; |
320 | } | |
321 | ||
178e08a5 | 322 | static int block_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) |
a672b469 AL |
323 | { |
324 | QEMUFileBdrv *s = opaque; | |
178e08a5 | 325 | return bdrv_get_buffer(s->bs, buf, s->base_offset + pos, size); |
a672b469 AL |
326 | } |
327 | ||
328 | static int bdrv_fclose(void *opaque) | |
329 | { | |
330 | QEMUFileBdrv *s = opaque; | |
331 | qemu_free(s); | |
332 | return 0; | |
333 | } | |
334 | ||
335 | static QEMUFile *qemu_fopen_bdrv(BlockDriverState *bs, int64_t offset, int is_writable) | |
336 | { | |
337 | QEMUFileBdrv *s; | |
338 | ||
339 | s = qemu_mallocz(sizeof(QEMUFileBdrv)); | |
a672b469 AL |
340 | |
341 | s->bs = bs; | |
342 | s->base_offset = offset; | |
343 | ||
344 | if (is_writable) | |
178e08a5 | 345 | return qemu_fopen_ops(s, block_put_buffer, NULL, bdrv_fclose, NULL); |
a672b469 | 346 | |
178e08a5 | 347 | return qemu_fopen_ops(s, NULL, block_get_buffer, bdrv_fclose, NULL); |
a672b469 AL |
348 | } |
349 | ||
350 | QEMUFile *qemu_fopen_ops(void *opaque, QEMUFilePutBufferFunc *put_buffer, | |
351 | QEMUFileGetBufferFunc *get_buffer, | |
352 | QEMUFileCloseFunc *close, | |
353 | QEMUFileRateLimit *rate_limit) | |
354 | { | |
355 | QEMUFile *f; | |
356 | ||
357 | f = qemu_mallocz(sizeof(QEMUFile)); | |
a672b469 AL |
358 | |
359 | f->opaque = opaque; | |
360 | f->put_buffer = put_buffer; | |
361 | f->get_buffer = get_buffer; | |
362 | f->close = close; | |
363 | f->rate_limit = rate_limit; | |
364 | f->is_write = 0; | |
365 | ||
366 | return f; | |
367 | } | |
368 | ||
369 | int qemu_file_has_error(QEMUFile *f) | |
370 | { | |
371 | return f->has_error; | |
372 | } | |
373 | ||
4dabe248 AL |
374 | void qemu_file_set_error(QEMUFile *f) |
375 | { | |
376 | f->has_error = 1; | |
377 | } | |
378 | ||
a672b469 AL |
379 | void qemu_fflush(QEMUFile *f) |
380 | { | |
381 | if (!f->put_buffer) | |
382 | return; | |
383 | ||
384 | if (f->is_write && f->buf_index > 0) { | |
385 | int len; | |
386 | ||
387 | len = f->put_buffer(f->opaque, f->buf, f->buf_offset, f->buf_index); | |
388 | if (len > 0) | |
389 | f->buf_offset += f->buf_index; | |
390 | else | |
391 | f->has_error = 1; | |
392 | f->buf_index = 0; | |
393 | } | |
394 | } | |
395 | ||
396 | static void qemu_fill_buffer(QEMUFile *f) | |
397 | { | |
398 | int len; | |
399 | ||
400 | if (!f->get_buffer) | |
401 | return; | |
402 | ||
403 | if (f->is_write) | |
404 | abort(); | |
405 | ||
406 | len = f->get_buffer(f->opaque, f->buf, f->buf_offset, IO_BUF_SIZE); | |
407 | if (len > 0) { | |
408 | f->buf_index = 0; | |
409 | f->buf_size = len; | |
410 | f->buf_offset += len; | |
411 | } else if (len != -EAGAIN) | |
412 | f->has_error = 1; | |
413 | } | |
414 | ||
415 | int qemu_fclose(QEMUFile *f) | |
416 | { | |
417 | int ret = 0; | |
418 | qemu_fflush(f); | |
419 | if (f->close) | |
420 | ret = f->close(f->opaque); | |
421 | qemu_free(f); | |
422 | return ret; | |
423 | } | |
424 | ||
425 | void qemu_file_put_notify(QEMUFile *f) | |
426 | { | |
427 | f->put_buffer(f->opaque, NULL, 0, 0); | |
428 | } | |
429 | ||
430 | void qemu_put_buffer(QEMUFile *f, const uint8_t *buf, int size) | |
431 | { | |
432 | int l; | |
433 | ||
434 | if (!f->has_error && f->is_write == 0 && f->buf_index > 0) { | |
435 | fprintf(stderr, | |
436 | "Attempted to write to buffer while read buffer is not empty\n"); | |
437 | abort(); | |
438 | } | |
439 | ||
440 | while (!f->has_error && size > 0) { | |
441 | l = IO_BUF_SIZE - f->buf_index; | |
442 | if (l > size) | |
443 | l = size; | |
444 | memcpy(f->buf + f->buf_index, buf, l); | |
445 | f->is_write = 1; | |
446 | f->buf_index += l; | |
447 | buf += l; | |
448 | size -= l; | |
449 | if (f->buf_index >= IO_BUF_SIZE) | |
450 | qemu_fflush(f); | |
451 | } | |
452 | } | |
453 | ||
454 | void qemu_put_byte(QEMUFile *f, int v) | |
455 | { | |
456 | if (!f->has_error && f->is_write == 0 && f->buf_index > 0) { | |
457 | fprintf(stderr, | |
458 | "Attempted to write to buffer while read buffer is not empty\n"); | |
459 | abort(); | |
460 | } | |
461 | ||
462 | f->buf[f->buf_index++] = v; | |
463 | f->is_write = 1; | |
464 | if (f->buf_index >= IO_BUF_SIZE) | |
465 | qemu_fflush(f); | |
466 | } | |
467 | ||
468 | int qemu_get_buffer(QEMUFile *f, uint8_t *buf, int size1) | |
469 | { | |
470 | int size, l; | |
471 | ||
472 | if (f->is_write) | |
473 | abort(); | |
474 | ||
475 | size = size1; | |
476 | while (size > 0) { | |
477 | l = f->buf_size - f->buf_index; | |
478 | if (l == 0) { | |
479 | qemu_fill_buffer(f); | |
480 | l = f->buf_size - f->buf_index; | |
481 | if (l == 0) | |
482 | break; | |
483 | } | |
484 | if (l > size) | |
485 | l = size; | |
486 | memcpy(buf, f->buf + f->buf_index, l); | |
487 | f->buf_index += l; | |
488 | buf += l; | |
489 | size -= l; | |
490 | } | |
491 | return size1 - size; | |
492 | } | |
493 | ||
494 | int qemu_get_byte(QEMUFile *f) | |
495 | { | |
496 | if (f->is_write) | |
497 | abort(); | |
498 | ||
499 | if (f->buf_index >= f->buf_size) { | |
500 | qemu_fill_buffer(f); | |
501 | if (f->buf_index >= f->buf_size) | |
502 | return 0; | |
503 | } | |
504 | return f->buf[f->buf_index++]; | |
505 | } | |
506 | ||
507 | int64_t qemu_ftell(QEMUFile *f) | |
508 | { | |
509 | return f->buf_offset - f->buf_size + f->buf_index; | |
510 | } | |
511 | ||
512 | int64_t qemu_fseek(QEMUFile *f, int64_t pos, int whence) | |
513 | { | |
514 | if (whence == SEEK_SET) { | |
515 | /* nothing to do */ | |
516 | } else if (whence == SEEK_CUR) { | |
517 | pos += qemu_ftell(f); | |
518 | } else { | |
519 | /* SEEK_END not supported */ | |
520 | return -1; | |
521 | } | |
522 | if (f->put_buffer) { | |
523 | qemu_fflush(f); | |
524 | f->buf_offset = pos; | |
525 | } else { | |
526 | f->buf_offset = pos; | |
527 | f->buf_index = 0; | |
528 | f->buf_size = 0; | |
529 | } | |
530 | return pos; | |
531 | } | |
532 | ||
533 | int qemu_file_rate_limit(QEMUFile *f) | |
534 | { | |
535 | if (f->rate_limit) | |
536 | return f->rate_limit(f->opaque); | |
537 | ||
538 | return 0; | |
539 | } | |
540 | ||
541 | void qemu_put_be16(QEMUFile *f, unsigned int v) | |
542 | { | |
543 | qemu_put_byte(f, v >> 8); | |
544 | qemu_put_byte(f, v); | |
545 | } | |
546 | ||
547 | void qemu_put_be32(QEMUFile *f, unsigned int v) | |
548 | { | |
549 | qemu_put_byte(f, v >> 24); | |
550 | qemu_put_byte(f, v >> 16); | |
551 | qemu_put_byte(f, v >> 8); | |
552 | qemu_put_byte(f, v); | |
553 | } | |
554 | ||
555 | void qemu_put_be64(QEMUFile *f, uint64_t v) | |
556 | { | |
557 | qemu_put_be32(f, v >> 32); | |
558 | qemu_put_be32(f, v); | |
559 | } | |
560 | ||
561 | unsigned int qemu_get_be16(QEMUFile *f) | |
562 | { | |
563 | unsigned int v; | |
564 | v = qemu_get_byte(f) << 8; | |
565 | v |= qemu_get_byte(f); | |
566 | return v; | |
567 | } | |
568 | ||
569 | unsigned int qemu_get_be32(QEMUFile *f) | |
570 | { | |
571 | unsigned int v; | |
572 | v = qemu_get_byte(f) << 24; | |
573 | v |= qemu_get_byte(f) << 16; | |
574 | v |= qemu_get_byte(f) << 8; | |
575 | v |= qemu_get_byte(f); | |
576 | return v; | |
577 | } | |
578 | ||
579 | uint64_t qemu_get_be64(QEMUFile *f) | |
580 | { | |
581 | uint64_t v; | |
582 | v = (uint64_t)qemu_get_be32(f) << 32; | |
583 | v |= qemu_get_be32(f); | |
584 | return v; | |
585 | } | |
586 | ||
587 | typedef struct SaveStateEntry { | |
588 | char idstr[256]; | |
589 | int instance_id; | |
590 | int version_id; | |
591 | int section_id; | |
592 | SaveLiveStateHandler *save_live_state; | |
593 | SaveStateHandler *save_state; | |
594 | LoadStateHandler *load_state; | |
595 | void *opaque; | |
596 | struct SaveStateEntry *next; | |
597 | } SaveStateEntry; | |
598 | ||
599 | static SaveStateEntry *first_se; | |
600 | ||
601 | /* TODO: Individual devices generally have very little idea about the rest | |
602 | of the system, so instance_id should be removed/replaced. | |
603 | Meanwhile pass -1 as instance_id if you do not already have a clearly | |
604 | distinguishing id for all instances of your device class. */ | |
605 | int register_savevm_live(const char *idstr, | |
606 | int instance_id, | |
607 | int version_id, | |
608 | SaveLiveStateHandler *save_live_state, | |
609 | SaveStateHandler *save_state, | |
610 | LoadStateHandler *load_state, | |
611 | void *opaque) | |
612 | { | |
613 | SaveStateEntry *se, **pse; | |
614 | static int global_section_id; | |
615 | ||
616 | se = qemu_malloc(sizeof(SaveStateEntry)); | |
a672b469 AL |
617 | pstrcpy(se->idstr, sizeof(se->idstr), idstr); |
618 | se->instance_id = (instance_id == -1) ? 0 : instance_id; | |
619 | se->version_id = version_id; | |
620 | se->section_id = global_section_id++; | |
621 | se->save_live_state = save_live_state; | |
622 | se->save_state = save_state; | |
623 | se->load_state = load_state; | |
624 | se->opaque = opaque; | |
625 | se->next = NULL; | |
626 | ||
627 | /* add at the end of list */ | |
628 | pse = &first_se; | |
629 | while (*pse != NULL) { | |
630 | if (instance_id == -1 | |
631 | && strcmp(se->idstr, (*pse)->idstr) == 0 | |
632 | && se->instance_id <= (*pse)->instance_id) | |
633 | se->instance_id = (*pse)->instance_id + 1; | |
634 | pse = &(*pse)->next; | |
635 | } | |
636 | *pse = se; | |
637 | return 0; | |
638 | } | |
639 | ||
640 | int register_savevm(const char *idstr, | |
641 | int instance_id, | |
642 | int version_id, | |
643 | SaveStateHandler *save_state, | |
644 | LoadStateHandler *load_state, | |
645 | void *opaque) | |
646 | { | |
647 | return register_savevm_live(idstr, instance_id, version_id, | |
648 | NULL, save_state, load_state, opaque); | |
649 | } | |
650 | ||
41bd13af AL |
651 | void unregister_savevm(const char *idstr, void *opaque) |
652 | { | |
653 | SaveStateEntry **pse; | |
654 | ||
655 | pse = &first_se; | |
656 | while (*pse != NULL) { | |
657 | if (strcmp((*pse)->idstr, idstr) == 0 && (*pse)->opaque == opaque) { | |
658 | SaveStateEntry *next = (*pse)->next; | |
659 | qemu_free(*pse); | |
660 | *pse = next; | |
661 | continue; | |
662 | } | |
663 | pse = &(*pse)->next; | |
664 | } | |
665 | } | |
666 | ||
a672b469 AL |
667 | #define QEMU_VM_FILE_MAGIC 0x5145564d |
668 | #define QEMU_VM_FILE_VERSION_COMPAT 0x00000002 | |
669 | #define QEMU_VM_FILE_VERSION 0x00000003 | |
670 | ||
671 | #define QEMU_VM_EOF 0x00 | |
672 | #define QEMU_VM_SECTION_START 0x01 | |
673 | #define QEMU_VM_SECTION_PART 0x02 | |
674 | #define QEMU_VM_SECTION_END 0x03 | |
675 | #define QEMU_VM_SECTION_FULL 0x04 | |
676 | ||
677 | int qemu_savevm_state_begin(QEMUFile *f) | |
678 | { | |
679 | SaveStateEntry *se; | |
680 | ||
681 | qemu_put_be32(f, QEMU_VM_FILE_MAGIC); | |
682 | qemu_put_be32(f, QEMU_VM_FILE_VERSION); | |
683 | ||
684 | for (se = first_se; se != NULL; se = se->next) { | |
685 | int len; | |
686 | ||
687 | if (se->save_live_state == NULL) | |
688 | continue; | |
689 | ||
690 | /* Section type */ | |
691 | qemu_put_byte(f, QEMU_VM_SECTION_START); | |
692 | qemu_put_be32(f, se->section_id); | |
693 | ||
694 | /* ID string */ | |
695 | len = strlen(se->idstr); | |
696 | qemu_put_byte(f, len); | |
697 | qemu_put_buffer(f, (uint8_t *)se->idstr, len); | |
698 | ||
699 | qemu_put_be32(f, se->instance_id); | |
700 | qemu_put_be32(f, se->version_id); | |
701 | ||
702 | se->save_live_state(f, QEMU_VM_SECTION_START, se->opaque); | |
703 | } | |
704 | ||
705 | if (qemu_file_has_error(f)) | |
706 | return -EIO; | |
707 | ||
708 | return 0; | |
709 | } | |
710 | ||
711 | int qemu_savevm_state_iterate(QEMUFile *f) | |
712 | { | |
713 | SaveStateEntry *se; | |
714 | int ret = 1; | |
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_PART); | |
722 | qemu_put_be32(f, se->section_id); | |
723 | ||
724 | ret &= !!se->save_live_state(f, QEMU_VM_SECTION_PART, se->opaque); | |
725 | } | |
726 | ||
727 | if (ret) | |
728 | return 1; | |
729 | ||
730 | if (qemu_file_has_error(f)) | |
731 | return -EIO; | |
732 | ||
733 | return 0; | |
734 | } | |
735 | ||
736 | int qemu_savevm_state_complete(QEMUFile *f) | |
737 | { | |
738 | SaveStateEntry *se; | |
739 | ||
740 | for (se = first_se; se != NULL; se = se->next) { | |
741 | if (se->save_live_state == NULL) | |
742 | continue; | |
743 | ||
744 | /* Section type */ | |
745 | qemu_put_byte(f, QEMU_VM_SECTION_END); | |
746 | qemu_put_be32(f, se->section_id); | |
747 | ||
748 | se->save_live_state(f, QEMU_VM_SECTION_END, se->opaque); | |
749 | } | |
750 | ||
751 | for(se = first_se; se != NULL; se = se->next) { | |
752 | int len; | |
753 | ||
754 | if (se->save_state == NULL) | |
755 | continue; | |
756 | ||
757 | /* Section type */ | |
758 | qemu_put_byte(f, QEMU_VM_SECTION_FULL); | |
759 | qemu_put_be32(f, se->section_id); | |
760 | ||
761 | /* ID string */ | |
762 | len = strlen(se->idstr); | |
763 | qemu_put_byte(f, len); | |
764 | qemu_put_buffer(f, (uint8_t *)se->idstr, len); | |
765 | ||
766 | qemu_put_be32(f, se->instance_id); | |
767 | qemu_put_be32(f, se->version_id); | |
768 | ||
769 | se->save_state(f, se->opaque); | |
770 | } | |
771 | ||
772 | qemu_put_byte(f, QEMU_VM_EOF); | |
773 | ||
774 | if (qemu_file_has_error(f)) | |
775 | return -EIO; | |
776 | ||
777 | return 0; | |
778 | } | |
779 | ||
780 | int qemu_savevm_state(QEMUFile *f) | |
781 | { | |
782 | int saved_vm_running; | |
783 | int ret; | |
784 | ||
785 | saved_vm_running = vm_running; | |
786 | vm_stop(0); | |
787 | ||
788 | bdrv_flush_all(); | |
789 | ||
790 | ret = qemu_savevm_state_begin(f); | |
791 | if (ret < 0) | |
792 | goto out; | |
793 | ||
794 | do { | |
795 | ret = qemu_savevm_state_iterate(f); | |
796 | if (ret < 0) | |
797 | goto out; | |
798 | } while (ret == 0); | |
799 | ||
800 | ret = qemu_savevm_state_complete(f); | |
801 | ||
802 | out: | |
803 | if (qemu_file_has_error(f)) | |
804 | ret = -EIO; | |
805 | ||
806 | if (!ret && saved_vm_running) | |
807 | vm_start(); | |
808 | ||
809 | return ret; | |
810 | } | |
811 | ||
812 | static SaveStateEntry *find_se(const char *idstr, int instance_id) | |
813 | { | |
814 | SaveStateEntry *se; | |
815 | ||
816 | for(se = first_se; se != NULL; se = se->next) { | |
817 | if (!strcmp(se->idstr, idstr) && | |
818 | instance_id == se->instance_id) | |
819 | return se; | |
820 | } | |
821 | return NULL; | |
822 | } | |
823 | ||
824 | typedef struct LoadStateEntry { | |
825 | SaveStateEntry *se; | |
826 | int section_id; | |
827 | int version_id; | |
828 | struct LoadStateEntry *next; | |
829 | } LoadStateEntry; | |
830 | ||
831 | static int qemu_loadvm_state_v2(QEMUFile *f) | |
832 | { | |
833 | SaveStateEntry *se; | |
834 | int len, ret, instance_id, record_len, version_id; | |
835 | int64_t total_len, end_pos, cur_pos; | |
836 | char idstr[256]; | |
837 | ||
838 | total_len = qemu_get_be64(f); | |
839 | end_pos = total_len + qemu_ftell(f); | |
840 | for(;;) { | |
841 | if (qemu_ftell(f) >= end_pos) | |
842 | break; | |
843 | len = qemu_get_byte(f); | |
844 | qemu_get_buffer(f, (uint8_t *)idstr, len); | |
845 | idstr[len] = '\0'; | |
846 | instance_id = qemu_get_be32(f); | |
847 | version_id = qemu_get_be32(f); | |
848 | record_len = qemu_get_be32(f); | |
849 | cur_pos = qemu_ftell(f); | |
850 | se = find_se(idstr, instance_id); | |
851 | if (!se) { | |
852 | fprintf(stderr, "qemu: warning: instance 0x%x of device '%s' not present in current VM\n", | |
853 | instance_id, idstr); | |
854 | } else { | |
855 | ret = se->load_state(f, se->opaque, version_id); | |
856 | if (ret < 0) { | |
857 | fprintf(stderr, "qemu: warning: error while loading state for instance 0x%x of device '%s'\n", | |
858 | instance_id, idstr); | |
d02f7094 | 859 | return ret; |
a672b469 AL |
860 | } |
861 | } | |
862 | /* always seek to exact end of record */ | |
863 | qemu_fseek(f, cur_pos + record_len, SEEK_SET); | |
864 | } | |
865 | ||
866 | if (qemu_file_has_error(f)) | |
867 | return -EIO; | |
868 | ||
869 | return 0; | |
870 | } | |
871 | ||
872 | int qemu_loadvm_state(QEMUFile *f) | |
873 | { | |
874 | LoadStateEntry *first_le = NULL; | |
875 | uint8_t section_type; | |
876 | unsigned int v; | |
877 | int ret; | |
878 | ||
879 | v = qemu_get_be32(f); | |
880 | if (v != QEMU_VM_FILE_MAGIC) | |
881 | return -EINVAL; | |
882 | ||
883 | v = qemu_get_be32(f); | |
884 | if (v == QEMU_VM_FILE_VERSION_COMPAT) | |
885 | return qemu_loadvm_state_v2(f); | |
886 | if (v != QEMU_VM_FILE_VERSION) | |
887 | return -ENOTSUP; | |
888 | ||
889 | while ((section_type = qemu_get_byte(f)) != QEMU_VM_EOF) { | |
890 | uint32_t instance_id, version_id, section_id; | |
891 | LoadStateEntry *le; | |
892 | SaveStateEntry *se; | |
893 | char idstr[257]; | |
894 | int len; | |
895 | ||
896 | switch (section_type) { | |
897 | case QEMU_VM_SECTION_START: | |
898 | case QEMU_VM_SECTION_FULL: | |
899 | /* Read section start */ | |
900 | section_id = qemu_get_be32(f); | |
901 | len = qemu_get_byte(f); | |
902 | qemu_get_buffer(f, (uint8_t *)idstr, len); | |
903 | idstr[len] = 0; | |
904 | instance_id = qemu_get_be32(f); | |
905 | version_id = qemu_get_be32(f); | |
906 | ||
907 | /* Find savevm section */ | |
908 | se = find_se(idstr, instance_id); | |
909 | if (se == NULL) { | |
910 | fprintf(stderr, "Unknown savevm section or instance '%s' %d\n", idstr, instance_id); | |
911 | ret = -EINVAL; | |
912 | goto out; | |
913 | } | |
914 | ||
915 | /* Validate version */ | |
916 | if (version_id > se->version_id) { | |
917 | fprintf(stderr, "savevm: unsupported version %d for '%s' v%d\n", | |
918 | version_id, idstr, se->version_id); | |
919 | ret = -EINVAL; | |
920 | goto out; | |
921 | } | |
922 | ||
923 | /* Add entry */ | |
924 | le = qemu_mallocz(sizeof(*le)); | |
a672b469 AL |
925 | |
926 | le->se = se; | |
927 | le->section_id = section_id; | |
928 | le->version_id = version_id; | |
929 | le->next = first_le; | |
930 | first_le = le; | |
931 | ||
932 | le->se->load_state(f, le->se->opaque, le->version_id); | |
933 | break; | |
934 | case QEMU_VM_SECTION_PART: | |
935 | case QEMU_VM_SECTION_END: | |
936 | section_id = qemu_get_be32(f); | |
937 | ||
938 | for (le = first_le; le && le->section_id != section_id; le = le->next); | |
939 | if (le == NULL) { | |
940 | fprintf(stderr, "Unknown savevm section %d\n", section_id); | |
941 | ret = -EINVAL; | |
942 | goto out; | |
943 | } | |
944 | ||
945 | le->se->load_state(f, le->se->opaque, le->version_id); | |
946 | break; | |
947 | default: | |
948 | fprintf(stderr, "Unknown savevm section type %d\n", section_type); | |
949 | ret = -EINVAL; | |
950 | goto out; | |
951 | } | |
952 | } | |
953 | ||
954 | ret = 0; | |
955 | ||
956 | out: | |
957 | while (first_le) { | |
958 | LoadStateEntry *le = first_le; | |
959 | first_le = first_le->next; | |
960 | qemu_free(le); | |
961 | } | |
962 | ||
963 | if (qemu_file_has_error(f)) | |
964 | ret = -EIO; | |
965 | ||
966 | return ret; | |
967 | } | |
968 | ||
969 | /* device can contain snapshots */ | |
970 | static int bdrv_can_snapshot(BlockDriverState *bs) | |
971 | { | |
972 | return (bs && | |
973 | !bdrv_is_removable(bs) && | |
974 | !bdrv_is_read_only(bs)); | |
975 | } | |
976 | ||
977 | /* device must be snapshots in order to have a reliable snapshot */ | |
978 | static int bdrv_has_snapshot(BlockDriverState *bs) | |
979 | { | |
980 | return (bs && | |
981 | !bdrv_is_removable(bs) && | |
982 | !bdrv_is_read_only(bs)); | |
983 | } | |
984 | ||
985 | static BlockDriverState *get_bs_snapshots(void) | |
986 | { | |
987 | BlockDriverState *bs; | |
988 | int i; | |
989 | ||
990 | if (bs_snapshots) | |
991 | return bs_snapshots; | |
992 | for(i = 0; i <= nb_drives; i++) { | |
993 | bs = drives_table[i].bdrv; | |
994 | if (bdrv_can_snapshot(bs)) | |
995 | goto ok; | |
996 | } | |
997 | return NULL; | |
998 | ok: | |
999 | bs_snapshots = bs; | |
1000 | return bs; | |
1001 | } | |
1002 | ||
1003 | static int bdrv_snapshot_find(BlockDriverState *bs, QEMUSnapshotInfo *sn_info, | |
1004 | const char *name) | |
1005 | { | |
1006 | QEMUSnapshotInfo *sn_tab, *sn; | |
1007 | int nb_sns, i, ret; | |
1008 | ||
1009 | ret = -ENOENT; | |
1010 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
1011 | if (nb_sns < 0) | |
1012 | return ret; | |
1013 | for(i = 0; i < nb_sns; i++) { | |
1014 | sn = &sn_tab[i]; | |
1015 | if (!strcmp(sn->id_str, name) || !strcmp(sn->name, name)) { | |
1016 | *sn_info = *sn; | |
1017 | ret = 0; | |
1018 | break; | |
1019 | } | |
1020 | } | |
1021 | qemu_free(sn_tab); | |
1022 | return ret; | |
1023 | } | |
1024 | ||
376253ec | 1025 | void do_savevm(Monitor *mon, const char *name) |
a672b469 AL |
1026 | { |
1027 | BlockDriverState *bs, *bs1; | |
1028 | QEMUSnapshotInfo sn1, *sn = &sn1, old_sn1, *old_sn = &old_sn1; | |
1029 | int must_delete, ret, i; | |
1030 | BlockDriverInfo bdi1, *bdi = &bdi1; | |
1031 | QEMUFile *f; | |
1032 | int saved_vm_running; | |
2d22b18f | 1033 | uint32_t vm_state_size; |
a672b469 AL |
1034 | #ifdef _WIN32 |
1035 | struct _timeb tb; | |
1036 | #else | |
1037 | struct timeval tv; | |
1038 | #endif | |
1039 | ||
1040 | bs = get_bs_snapshots(); | |
1041 | if (!bs) { | |
376253ec | 1042 | monitor_printf(mon, "No block device can accept snapshots\n"); |
a672b469 AL |
1043 | return; |
1044 | } | |
1045 | ||
1046 | /* ??? Should this occur after vm_stop? */ | |
1047 | qemu_aio_flush(); | |
1048 | ||
1049 | saved_vm_running = vm_running; | |
1050 | vm_stop(0); | |
1051 | ||
1052 | must_delete = 0; | |
1053 | if (name) { | |
1054 | ret = bdrv_snapshot_find(bs, old_sn, name); | |
1055 | if (ret >= 0) { | |
1056 | must_delete = 1; | |
1057 | } | |
1058 | } | |
1059 | memset(sn, 0, sizeof(*sn)); | |
1060 | if (must_delete) { | |
1061 | pstrcpy(sn->name, sizeof(sn->name), old_sn->name); | |
1062 | pstrcpy(sn->id_str, sizeof(sn->id_str), old_sn->id_str); | |
1063 | } else { | |
1064 | if (name) | |
1065 | pstrcpy(sn->name, sizeof(sn->name), name); | |
1066 | } | |
1067 | ||
1068 | /* fill auxiliary fields */ | |
1069 | #ifdef _WIN32 | |
1070 | _ftime(&tb); | |
1071 | sn->date_sec = tb.time; | |
1072 | sn->date_nsec = tb.millitm * 1000000; | |
1073 | #else | |
1074 | gettimeofday(&tv, NULL); | |
1075 | sn->date_sec = tv.tv_sec; | |
1076 | sn->date_nsec = tv.tv_usec * 1000; | |
1077 | #endif | |
1078 | sn->vm_clock_nsec = qemu_get_clock(vm_clock); | |
1079 | ||
1080 | if (bdrv_get_info(bs, bdi) < 0 || bdi->vm_state_offset <= 0) { | |
376253ec AL |
1081 | monitor_printf(mon, "Device %s does not support VM state snapshots\n", |
1082 | bdrv_get_device_name(bs)); | |
a672b469 AL |
1083 | goto the_end; |
1084 | } | |
1085 | ||
1086 | /* save the VM state */ | |
1087 | f = qemu_fopen_bdrv(bs, bdi->vm_state_offset, 1); | |
1088 | if (!f) { | |
376253ec | 1089 | monitor_printf(mon, "Could not open VM state file\n"); |
a672b469 AL |
1090 | goto the_end; |
1091 | } | |
1092 | ret = qemu_savevm_state(f); | |
2d22b18f | 1093 | vm_state_size = qemu_ftell(f); |
a672b469 AL |
1094 | qemu_fclose(f); |
1095 | if (ret < 0) { | |
376253ec | 1096 | monitor_printf(mon, "Error %d while writing VM\n", ret); |
a672b469 AL |
1097 | goto the_end; |
1098 | } | |
1099 | ||
1100 | /* create the snapshots */ | |
1101 | ||
1102 | for(i = 0; i < nb_drives; i++) { | |
1103 | bs1 = drives_table[i].bdrv; | |
1104 | if (bdrv_has_snapshot(bs1)) { | |
1105 | if (must_delete) { | |
1106 | ret = bdrv_snapshot_delete(bs1, old_sn->id_str); | |
1107 | if (ret < 0) { | |
376253ec AL |
1108 | monitor_printf(mon, |
1109 | "Error while deleting snapshot on '%s'\n", | |
1110 | bdrv_get_device_name(bs1)); | |
a672b469 AL |
1111 | } |
1112 | } | |
2d22b18f AL |
1113 | /* Write VM state size only to the image that contains the state */ |
1114 | sn->vm_state_size = (bs == bs1 ? vm_state_size : 0); | |
a672b469 AL |
1115 | ret = bdrv_snapshot_create(bs1, sn); |
1116 | if (ret < 0) { | |
376253ec AL |
1117 | monitor_printf(mon, "Error while creating snapshot on '%s'\n", |
1118 | bdrv_get_device_name(bs1)); | |
a672b469 AL |
1119 | } |
1120 | } | |
1121 | } | |
1122 | ||
1123 | the_end: | |
1124 | if (saved_vm_running) | |
1125 | vm_start(); | |
1126 | } | |
1127 | ||
376253ec | 1128 | void do_loadvm(Monitor *mon, const char *name) |
a672b469 AL |
1129 | { |
1130 | BlockDriverState *bs, *bs1; | |
1131 | BlockDriverInfo bdi1, *bdi = &bdi1; | |
2d22b18f | 1132 | QEMUSnapshotInfo sn; |
a672b469 AL |
1133 | QEMUFile *f; |
1134 | int i, ret; | |
1135 | int saved_vm_running; | |
1136 | ||
1137 | bs = get_bs_snapshots(); | |
1138 | if (!bs) { | |
376253ec | 1139 | monitor_printf(mon, "No block device supports snapshots\n"); |
a672b469 AL |
1140 | return; |
1141 | } | |
1142 | ||
1143 | /* Flush all IO requests so they don't interfere with the new state. */ | |
1144 | qemu_aio_flush(); | |
1145 | ||
1146 | saved_vm_running = vm_running; | |
1147 | vm_stop(0); | |
1148 | ||
1149 | for(i = 0; i <= nb_drives; i++) { | |
1150 | bs1 = drives_table[i].bdrv; | |
1151 | if (bdrv_has_snapshot(bs1)) { | |
1152 | ret = bdrv_snapshot_goto(bs1, name); | |
1153 | if (ret < 0) { | |
1154 | if (bs != bs1) | |
376253ec | 1155 | monitor_printf(mon, "Warning: "); |
a672b469 AL |
1156 | switch(ret) { |
1157 | case -ENOTSUP: | |
376253ec AL |
1158 | monitor_printf(mon, |
1159 | "Snapshots not supported on device '%s'\n", | |
1160 | bdrv_get_device_name(bs1)); | |
a672b469 AL |
1161 | break; |
1162 | case -ENOENT: | |
376253ec AL |
1163 | monitor_printf(mon, "Could not find snapshot '%s' on " |
1164 | "device '%s'\n", | |
1165 | name, bdrv_get_device_name(bs1)); | |
a672b469 AL |
1166 | break; |
1167 | default: | |
376253ec AL |
1168 | monitor_printf(mon, "Error %d while activating snapshot on" |
1169 | " '%s'\n", ret, bdrv_get_device_name(bs1)); | |
a672b469 AL |
1170 | break; |
1171 | } | |
1172 | /* fatal on snapshot block device */ | |
1173 | if (bs == bs1) | |
1174 | goto the_end; | |
1175 | } | |
1176 | } | |
1177 | } | |
1178 | ||
1179 | if (bdrv_get_info(bs, bdi) < 0 || bdi->vm_state_offset <= 0) { | |
376253ec AL |
1180 | monitor_printf(mon, "Device %s does not support VM state snapshots\n", |
1181 | bdrv_get_device_name(bs)); | |
a672b469 AL |
1182 | return; |
1183 | } | |
1184 | ||
2d22b18f AL |
1185 | /* Don't even try to load empty VM states */ |
1186 | ret = bdrv_snapshot_find(bs, &sn, name); | |
1187 | if ((ret >= 0) && (sn.vm_state_size == 0)) | |
1188 | goto the_end; | |
1189 | ||
a672b469 AL |
1190 | /* restore the VM state */ |
1191 | f = qemu_fopen_bdrv(bs, bdi->vm_state_offset, 0); | |
1192 | if (!f) { | |
376253ec | 1193 | monitor_printf(mon, "Could not open VM state file\n"); |
a672b469 AL |
1194 | goto the_end; |
1195 | } | |
1196 | ret = qemu_loadvm_state(f); | |
1197 | qemu_fclose(f); | |
1198 | if (ret < 0) { | |
376253ec | 1199 | monitor_printf(mon, "Error %d while loading VM state\n", ret); |
a672b469 AL |
1200 | } |
1201 | the_end: | |
1202 | if (saved_vm_running) | |
1203 | vm_start(); | |
1204 | } | |
1205 | ||
376253ec | 1206 | void do_delvm(Monitor *mon, const char *name) |
a672b469 AL |
1207 | { |
1208 | BlockDriverState *bs, *bs1; | |
1209 | int i, ret; | |
1210 | ||
1211 | bs = get_bs_snapshots(); | |
1212 | if (!bs) { | |
376253ec | 1213 | monitor_printf(mon, "No block device supports snapshots\n"); |
a672b469 AL |
1214 | return; |
1215 | } | |
1216 | ||
1217 | for(i = 0; i <= nb_drives; i++) { | |
1218 | bs1 = drives_table[i].bdrv; | |
1219 | if (bdrv_has_snapshot(bs1)) { | |
1220 | ret = bdrv_snapshot_delete(bs1, name); | |
1221 | if (ret < 0) { | |
1222 | if (ret == -ENOTSUP) | |
376253ec AL |
1223 | monitor_printf(mon, |
1224 | "Snapshots not supported on device '%s'\n", | |
1225 | bdrv_get_device_name(bs1)); | |
a672b469 | 1226 | else |
376253ec AL |
1227 | monitor_printf(mon, "Error %d while deleting snapshot on " |
1228 | "'%s'\n", ret, bdrv_get_device_name(bs1)); | |
a672b469 AL |
1229 | } |
1230 | } | |
1231 | } | |
1232 | } | |
1233 | ||
376253ec | 1234 | void do_info_snapshots(Monitor *mon) |
a672b469 AL |
1235 | { |
1236 | BlockDriverState *bs, *bs1; | |
1237 | QEMUSnapshotInfo *sn_tab, *sn; | |
1238 | int nb_sns, i; | |
1239 | char buf[256]; | |
1240 | ||
1241 | bs = get_bs_snapshots(); | |
1242 | if (!bs) { | |
376253ec | 1243 | monitor_printf(mon, "No available block device supports snapshots\n"); |
a672b469 AL |
1244 | return; |
1245 | } | |
376253ec | 1246 | monitor_printf(mon, "Snapshot devices:"); |
a672b469 AL |
1247 | for(i = 0; i <= nb_drives; i++) { |
1248 | bs1 = drives_table[i].bdrv; | |
1249 | if (bdrv_has_snapshot(bs1)) { | |
1250 | if (bs == bs1) | |
376253ec | 1251 | monitor_printf(mon, " %s", bdrv_get_device_name(bs1)); |
a672b469 AL |
1252 | } |
1253 | } | |
376253ec | 1254 | monitor_printf(mon, "\n"); |
a672b469 AL |
1255 | |
1256 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
1257 | if (nb_sns < 0) { | |
376253ec | 1258 | monitor_printf(mon, "bdrv_snapshot_list: error %d\n", nb_sns); |
a672b469 AL |
1259 | return; |
1260 | } | |
376253ec AL |
1261 | monitor_printf(mon, "Snapshot list (from %s):\n", |
1262 | bdrv_get_device_name(bs)); | |
1263 | monitor_printf(mon, "%s\n", bdrv_snapshot_dump(buf, sizeof(buf), NULL)); | |
a672b469 AL |
1264 | for(i = 0; i < nb_sns; i++) { |
1265 | sn = &sn_tab[i]; | |
376253ec | 1266 | monitor_printf(mon, "%s\n", bdrv_snapshot_dump(buf, sizeof(buf), sn)); |
a672b469 AL |
1267 | } |
1268 | qemu_free(sn_tab); | |
1269 | } |