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Commit | Line | Data |
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a672b469 AL |
1 | /* |
2 | * QEMU System Emulator | |
3 | * | |
4 | * Copyright (c) 2003-2008 Fabrice Bellard | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
7 | * of this software and associated documentation files (the "Software"), to deal | |
8 | * in the Software without restriction, including without limitation the rights | |
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
10 | * copies of the Software, and to permit persons to whom the Software is | |
11 | * furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
22 | * THE SOFTWARE. | |
23 | */ | |
a672b469 AL |
24 | #include <unistd.h> |
25 | #include <fcntl.h> | |
26 | #include <signal.h> | |
27 | #include <time.h> | |
28 | #include <errno.h> | |
29 | #include <sys/time.h> | |
30 | #include <zlib.h> | |
31 | ||
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 | ||
ed8b330b | 119 | static void qemu_announce_self_once(void *opaque) |
a672b469 | 120 | { |
ed8b330b | 121 | int i, len; |
a672b469 AL |
122 | VLANState *vlan; |
123 | VLANClientState *vc; | |
124 | uint8_t buf[256]; | |
ed8b330b GN |
125 | static int count = SELF_ANNOUNCE_ROUNDS; |
126 | QEMUTimer *timer = *(QEMUTimer **)opaque; | |
a672b469 | 127 | |
3450df30 AL |
128 | for (i = 0; i < MAX_NICS; i++) { |
129 | if (!nd_table[i].used) | |
130 | continue; | |
a672b469 AL |
131 | len = announce_self_create(buf, nd_table[i].macaddr); |
132 | vlan = nd_table[i].vlan; | |
ed8b330b | 133 | for(vc = vlan->first_client; vc != NULL; vc = vc->next) { |
e3f5ec2b | 134 | vc->receive(vc, buf, len); |
a672b469 AL |
135 | } |
136 | } | |
ed8b330b GN |
137 | if (count--) { |
138 | qemu_mod_timer(timer, qemu_get_clock(rt_clock) + 100); | |
139 | } else { | |
140 | qemu_del_timer(timer); | |
141 | qemu_free_timer(timer); | |
142 | } | |
143 | } | |
144 | ||
145 | void qemu_announce_self(void) | |
146 | { | |
147 | static QEMUTimer *timer; | |
148 | timer = qemu_new_timer(rt_clock, qemu_announce_self_once, &timer); | |
149 | qemu_announce_self_once(&timer); | |
a672b469 AL |
150 | } |
151 | ||
152 | /***********************************************************/ | |
153 | /* savevm/loadvm support */ | |
154 | ||
155 | #define IO_BUF_SIZE 32768 | |
156 | ||
157 | struct QEMUFile { | |
158 | QEMUFilePutBufferFunc *put_buffer; | |
159 | QEMUFileGetBufferFunc *get_buffer; | |
160 | QEMUFileCloseFunc *close; | |
161 | QEMUFileRateLimit *rate_limit; | |
19629537 | 162 | QEMUFileSetRateLimit *set_rate_limit; |
a672b469 AL |
163 | void *opaque; |
164 | int is_write; | |
165 | ||
166 | int64_t buf_offset; /* start of buffer when writing, end of buffer | |
167 | when reading */ | |
168 | int buf_index; | |
169 | int buf_size; /* 0 when writing */ | |
170 | uint8_t buf[IO_BUF_SIZE]; | |
171 | ||
172 | int has_error; | |
173 | }; | |
174 | ||
175 | typedef struct QEMUFilePopen | |
176 | { | |
177 | FILE *popen_file; | |
178 | QEMUFile *file; | |
179 | } QEMUFilePopen; | |
180 | ||
181 | typedef struct QEMUFileSocket | |
182 | { | |
183 | int fd; | |
184 | QEMUFile *file; | |
185 | } QEMUFileSocket; | |
186 | ||
187 | static int socket_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) | |
188 | { | |
189 | QEMUFileSocket *s = opaque; | |
190 | ssize_t len; | |
191 | ||
192 | do { | |
c5b76b38 | 193 | len = recv(s->fd, (void *)buf, size, 0); |
a672b469 AL |
194 | } while (len == -1 && socket_error() == EINTR); |
195 | ||
196 | if (len == -1) | |
197 | len = -socket_error(); | |
198 | ||
199 | return len; | |
200 | } | |
201 | ||
202 | static int socket_close(void *opaque) | |
203 | { | |
204 | QEMUFileSocket *s = opaque; | |
205 | qemu_free(s); | |
206 | return 0; | |
207 | } | |
208 | ||
209 | static int popen_put_buffer(void *opaque, const uint8_t *buf, int64_t pos, int size) | |
210 | { | |
211 | QEMUFilePopen *s = opaque; | |
212 | return fwrite(buf, 1, size, s->popen_file); | |
213 | } | |
214 | ||
215 | static int popen_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) | |
216 | { | |
217 | QEMUFilePopen *s = opaque; | |
8a67ec4d UL |
218 | FILE *fp = s->popen_file; |
219 | int bytes; | |
220 | ||
221 | do { | |
222 | clearerr(fp); | |
223 | bytes = fread(buf, 1, size, fp); | |
224 | } while ((bytes == 0) && ferror(fp) && (errno == EINTR)); | |
225 | return bytes; | |
a672b469 AL |
226 | } |
227 | ||
228 | static int popen_close(void *opaque) | |
229 | { | |
230 | QEMUFilePopen *s = opaque; | |
231 | pclose(s->popen_file); | |
232 | qemu_free(s); | |
233 | return 0; | |
234 | } | |
235 | ||
236 | QEMUFile *qemu_popen(FILE *popen_file, const char *mode) | |
237 | { | |
238 | QEMUFilePopen *s; | |
239 | ||
240 | if (popen_file == NULL || mode == NULL || (mode[0] != 'r' && mode[0] != 'w') || mode[1] != 0) { | |
241 | fprintf(stderr, "qemu_popen: Argument validity check failed\n"); | |
242 | return NULL; | |
243 | } | |
244 | ||
245 | s = qemu_mallocz(sizeof(QEMUFilePopen)); | |
a672b469 AL |
246 | |
247 | s->popen_file = popen_file; | |
248 | ||
249 | if(mode[0] == 'r') { | |
19629537 | 250 | s->file = qemu_fopen_ops(s, NULL, popen_get_buffer, popen_close, NULL, NULL); |
a672b469 | 251 | } else { |
19629537 | 252 | s->file = qemu_fopen_ops(s, popen_put_buffer, NULL, popen_close, NULL, NULL); |
a672b469 | 253 | } |
a672b469 AL |
254 | return s->file; |
255 | } | |
256 | ||
257 | QEMUFile *qemu_popen_cmd(const char *command, const char *mode) | |
258 | { | |
259 | FILE *popen_file; | |
260 | ||
261 | popen_file = popen(command, mode); | |
262 | if(popen_file == NULL) { | |
263 | return NULL; | |
264 | } | |
265 | ||
266 | return qemu_popen(popen_file, mode); | |
267 | } | |
268 | ||
8a43b1ea CL |
269 | int qemu_popen_fd(QEMUFile *f) |
270 | { | |
271 | QEMUFilePopen *p; | |
272 | int fd; | |
273 | ||
274 | p = (QEMUFilePopen *)f->opaque; | |
275 | fd = fileno(p->popen_file); | |
276 | ||
277 | return fd; | |
278 | } | |
279 | ||
a672b469 AL |
280 | QEMUFile *qemu_fopen_socket(int fd) |
281 | { | |
282 | QEMUFileSocket *s = qemu_mallocz(sizeof(QEMUFileSocket)); | |
283 | ||
a672b469 | 284 | s->fd = fd; |
19629537 | 285 | s->file = qemu_fopen_ops(s, NULL, socket_get_buffer, socket_close, NULL, NULL); |
a672b469 AL |
286 | return s->file; |
287 | } | |
288 | ||
289 | typedef struct QEMUFileStdio | |
290 | { | |
291 | FILE *outfile; | |
292 | } QEMUFileStdio; | |
293 | ||
294 | static int file_put_buffer(void *opaque, const uint8_t *buf, | |
295 | int64_t pos, int size) | |
296 | { | |
297 | QEMUFileStdio *s = opaque; | |
298 | fseek(s->outfile, pos, SEEK_SET); | |
299 | fwrite(buf, 1, size, s->outfile); | |
300 | return size; | |
301 | } | |
302 | ||
303 | static int file_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) | |
304 | { | |
305 | QEMUFileStdio *s = opaque; | |
306 | fseek(s->outfile, pos, SEEK_SET); | |
307 | return fread(buf, 1, size, s->outfile); | |
308 | } | |
309 | ||
310 | static int file_close(void *opaque) | |
311 | { | |
312 | QEMUFileStdio *s = opaque; | |
313 | fclose(s->outfile); | |
314 | qemu_free(s); | |
315 | return 0; | |
316 | } | |
317 | ||
318 | QEMUFile *qemu_fopen(const char *filename, const char *mode) | |
319 | { | |
320 | QEMUFileStdio *s; | |
321 | ||
322 | s = qemu_mallocz(sizeof(QEMUFileStdio)); | |
a672b469 AL |
323 | |
324 | s->outfile = fopen(filename, mode); | |
325 | if (!s->outfile) | |
326 | goto fail; | |
327 | ||
328 | if (!strcmp(mode, "wb")) | |
19629537 | 329 | return qemu_fopen_ops(s, file_put_buffer, NULL, file_close, NULL, NULL); |
a672b469 | 330 | else if (!strcmp(mode, "rb")) |
19629537 | 331 | return qemu_fopen_ops(s, NULL, file_get_buffer, file_close, NULL, NULL); |
a672b469 AL |
332 | |
333 | fail: | |
334 | if (s->outfile) | |
335 | fclose(s->outfile); | |
336 | qemu_free(s); | |
337 | return NULL; | |
338 | } | |
339 | ||
178e08a5 | 340 | static int block_put_buffer(void *opaque, const uint8_t *buf, |
a672b469 AL |
341 | int64_t pos, int size) |
342 | { | |
45566e9c | 343 | bdrv_save_vmstate(opaque, buf, pos, size); |
a672b469 AL |
344 | return size; |
345 | } | |
346 | ||
178e08a5 | 347 | static int block_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) |
a672b469 | 348 | { |
45566e9c | 349 | return bdrv_load_vmstate(opaque, buf, pos, size); |
a672b469 AL |
350 | } |
351 | ||
352 | static int bdrv_fclose(void *opaque) | |
353 | { | |
a672b469 AL |
354 | return 0; |
355 | } | |
356 | ||
45566e9c | 357 | static QEMUFile *qemu_fopen_bdrv(BlockDriverState *bs, int is_writable) |
a672b469 | 358 | { |
a672b469 | 359 | if (is_writable) |
45566e9c CH |
360 | return qemu_fopen_ops(bs, block_put_buffer, NULL, bdrv_fclose, NULL, NULL); |
361 | return qemu_fopen_ops(bs, NULL, block_get_buffer, bdrv_fclose, NULL, NULL); | |
a672b469 AL |
362 | } |
363 | ||
364 | QEMUFile *qemu_fopen_ops(void *opaque, QEMUFilePutBufferFunc *put_buffer, | |
365 | QEMUFileGetBufferFunc *get_buffer, | |
366 | QEMUFileCloseFunc *close, | |
19629537 GC |
367 | QEMUFileRateLimit *rate_limit, |
368 | QEMUFileSetRateLimit *set_rate_limit) | |
a672b469 AL |
369 | { |
370 | QEMUFile *f; | |
371 | ||
372 | f = qemu_mallocz(sizeof(QEMUFile)); | |
a672b469 AL |
373 | |
374 | f->opaque = opaque; | |
375 | f->put_buffer = put_buffer; | |
376 | f->get_buffer = get_buffer; | |
377 | f->close = close; | |
378 | f->rate_limit = rate_limit; | |
19629537 | 379 | f->set_rate_limit = set_rate_limit; |
a672b469 AL |
380 | f->is_write = 0; |
381 | ||
382 | return f; | |
383 | } | |
384 | ||
385 | int qemu_file_has_error(QEMUFile *f) | |
386 | { | |
387 | return f->has_error; | |
388 | } | |
389 | ||
4dabe248 AL |
390 | void qemu_file_set_error(QEMUFile *f) |
391 | { | |
392 | f->has_error = 1; | |
393 | } | |
394 | ||
a672b469 AL |
395 | void qemu_fflush(QEMUFile *f) |
396 | { | |
397 | if (!f->put_buffer) | |
398 | return; | |
399 | ||
400 | if (f->is_write && f->buf_index > 0) { | |
401 | int len; | |
402 | ||
403 | len = f->put_buffer(f->opaque, f->buf, f->buf_offset, f->buf_index); | |
404 | if (len > 0) | |
405 | f->buf_offset += f->buf_index; | |
406 | else | |
407 | f->has_error = 1; | |
408 | f->buf_index = 0; | |
409 | } | |
410 | } | |
411 | ||
412 | static void qemu_fill_buffer(QEMUFile *f) | |
413 | { | |
414 | int len; | |
415 | ||
416 | if (!f->get_buffer) | |
417 | return; | |
418 | ||
419 | if (f->is_write) | |
420 | abort(); | |
421 | ||
422 | len = f->get_buffer(f->opaque, f->buf, f->buf_offset, IO_BUF_SIZE); | |
423 | if (len > 0) { | |
424 | f->buf_index = 0; | |
425 | f->buf_size = len; | |
426 | f->buf_offset += len; | |
427 | } else if (len != -EAGAIN) | |
428 | f->has_error = 1; | |
429 | } | |
430 | ||
431 | int qemu_fclose(QEMUFile *f) | |
432 | { | |
433 | int ret = 0; | |
434 | qemu_fflush(f); | |
435 | if (f->close) | |
436 | ret = f->close(f->opaque); | |
437 | qemu_free(f); | |
438 | return ret; | |
439 | } | |
440 | ||
441 | void qemu_file_put_notify(QEMUFile *f) | |
442 | { | |
443 | f->put_buffer(f->opaque, NULL, 0, 0); | |
444 | } | |
445 | ||
446 | void qemu_put_buffer(QEMUFile *f, const uint8_t *buf, int size) | |
447 | { | |
448 | int l; | |
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 | while (!f->has_error && size > 0) { | |
457 | l = IO_BUF_SIZE - f->buf_index; | |
458 | if (l > size) | |
459 | l = size; | |
460 | memcpy(f->buf + f->buf_index, buf, l); | |
461 | f->is_write = 1; | |
462 | f->buf_index += l; | |
463 | buf += l; | |
464 | size -= l; | |
465 | if (f->buf_index >= IO_BUF_SIZE) | |
466 | qemu_fflush(f); | |
467 | } | |
468 | } | |
469 | ||
470 | void qemu_put_byte(QEMUFile *f, int v) | |
471 | { | |
472 | if (!f->has_error && f->is_write == 0 && f->buf_index > 0) { | |
473 | fprintf(stderr, | |
474 | "Attempted to write to buffer while read buffer is not empty\n"); | |
475 | abort(); | |
476 | } | |
477 | ||
478 | f->buf[f->buf_index++] = v; | |
479 | f->is_write = 1; | |
480 | if (f->buf_index >= IO_BUF_SIZE) | |
481 | qemu_fflush(f); | |
482 | } | |
483 | ||
484 | int qemu_get_buffer(QEMUFile *f, uint8_t *buf, int size1) | |
485 | { | |
486 | int size, l; | |
487 | ||
488 | if (f->is_write) | |
489 | abort(); | |
490 | ||
491 | size = size1; | |
492 | while (size > 0) { | |
493 | l = f->buf_size - f->buf_index; | |
494 | if (l == 0) { | |
495 | qemu_fill_buffer(f); | |
496 | l = f->buf_size - f->buf_index; | |
497 | if (l == 0) | |
498 | break; | |
499 | } | |
500 | if (l > size) | |
501 | l = size; | |
502 | memcpy(buf, f->buf + f->buf_index, l); | |
503 | f->buf_index += l; | |
504 | buf += l; | |
505 | size -= l; | |
506 | } | |
507 | return size1 - size; | |
508 | } | |
509 | ||
510 | int qemu_get_byte(QEMUFile *f) | |
511 | { | |
512 | if (f->is_write) | |
513 | abort(); | |
514 | ||
515 | if (f->buf_index >= f->buf_size) { | |
516 | qemu_fill_buffer(f); | |
517 | if (f->buf_index >= f->buf_size) | |
518 | return 0; | |
519 | } | |
520 | return f->buf[f->buf_index++]; | |
521 | } | |
522 | ||
523 | int64_t qemu_ftell(QEMUFile *f) | |
524 | { | |
525 | return f->buf_offset - f->buf_size + f->buf_index; | |
526 | } | |
527 | ||
528 | int64_t qemu_fseek(QEMUFile *f, int64_t pos, int whence) | |
529 | { | |
530 | if (whence == SEEK_SET) { | |
531 | /* nothing to do */ | |
532 | } else if (whence == SEEK_CUR) { | |
533 | pos += qemu_ftell(f); | |
534 | } else { | |
535 | /* SEEK_END not supported */ | |
536 | return -1; | |
537 | } | |
538 | if (f->put_buffer) { | |
539 | qemu_fflush(f); | |
540 | f->buf_offset = pos; | |
541 | } else { | |
542 | f->buf_offset = pos; | |
543 | f->buf_index = 0; | |
544 | f->buf_size = 0; | |
545 | } | |
546 | return pos; | |
547 | } | |
548 | ||
549 | int qemu_file_rate_limit(QEMUFile *f) | |
550 | { | |
551 | if (f->rate_limit) | |
552 | return f->rate_limit(f->opaque); | |
553 | ||
554 | return 0; | |
555 | } | |
556 | ||
19629537 GC |
557 | size_t qemu_file_set_rate_limit(QEMUFile *f, size_t new_rate) |
558 | { | |
559 | if (f->set_rate_limit) | |
560 | return f->set_rate_limit(f->opaque, new_rate); | |
561 | ||
562 | return 0; | |
563 | } | |
564 | ||
a672b469 AL |
565 | void qemu_put_be16(QEMUFile *f, unsigned int v) |
566 | { | |
567 | qemu_put_byte(f, v >> 8); | |
568 | qemu_put_byte(f, v); | |
569 | } | |
570 | ||
571 | void qemu_put_be32(QEMUFile *f, unsigned int v) | |
572 | { | |
573 | qemu_put_byte(f, v >> 24); | |
574 | qemu_put_byte(f, v >> 16); | |
575 | qemu_put_byte(f, v >> 8); | |
576 | qemu_put_byte(f, v); | |
577 | } | |
578 | ||
579 | void qemu_put_be64(QEMUFile *f, uint64_t v) | |
580 | { | |
581 | qemu_put_be32(f, v >> 32); | |
582 | qemu_put_be32(f, v); | |
583 | } | |
584 | ||
585 | unsigned int qemu_get_be16(QEMUFile *f) | |
586 | { | |
587 | unsigned int v; | |
588 | v = qemu_get_byte(f) << 8; | |
589 | v |= qemu_get_byte(f); | |
590 | return v; | |
591 | } | |
592 | ||
593 | unsigned int qemu_get_be32(QEMUFile *f) | |
594 | { | |
595 | unsigned int v; | |
596 | v = qemu_get_byte(f) << 24; | |
597 | v |= qemu_get_byte(f) << 16; | |
598 | v |= qemu_get_byte(f) << 8; | |
599 | v |= qemu_get_byte(f); | |
600 | return v; | |
601 | } | |
602 | ||
603 | uint64_t qemu_get_be64(QEMUFile *f) | |
604 | { | |
605 | uint64_t v; | |
606 | v = (uint64_t)qemu_get_be32(f) << 32; | |
607 | v |= qemu_get_be32(f); | |
608 | return v; | |
609 | } | |
610 | ||
611 | typedef struct SaveStateEntry { | |
612 | char idstr[256]; | |
613 | int instance_id; | |
614 | int version_id; | |
615 | int section_id; | |
616 | SaveLiveStateHandler *save_live_state; | |
617 | SaveStateHandler *save_state; | |
618 | LoadStateHandler *load_state; | |
619 | void *opaque; | |
620 | struct SaveStateEntry *next; | |
621 | } SaveStateEntry; | |
622 | ||
623 | static SaveStateEntry *first_se; | |
624 | ||
625 | /* TODO: Individual devices generally have very little idea about the rest | |
626 | of the system, so instance_id should be removed/replaced. | |
627 | Meanwhile pass -1 as instance_id if you do not already have a clearly | |
628 | distinguishing id for all instances of your device class. */ | |
629 | int register_savevm_live(const char *idstr, | |
630 | int instance_id, | |
631 | int version_id, | |
632 | SaveLiveStateHandler *save_live_state, | |
633 | SaveStateHandler *save_state, | |
634 | LoadStateHandler *load_state, | |
635 | void *opaque) | |
636 | { | |
637 | SaveStateEntry *se, **pse; | |
638 | static int global_section_id; | |
639 | ||
640 | se = qemu_malloc(sizeof(SaveStateEntry)); | |
a672b469 AL |
641 | pstrcpy(se->idstr, sizeof(se->idstr), idstr); |
642 | se->instance_id = (instance_id == -1) ? 0 : instance_id; | |
643 | se->version_id = version_id; | |
644 | se->section_id = global_section_id++; | |
645 | se->save_live_state = save_live_state; | |
646 | se->save_state = save_state; | |
647 | se->load_state = load_state; | |
648 | se->opaque = opaque; | |
649 | se->next = NULL; | |
650 | ||
651 | /* add at the end of list */ | |
652 | pse = &first_se; | |
653 | while (*pse != NULL) { | |
654 | if (instance_id == -1 | |
655 | && strcmp(se->idstr, (*pse)->idstr) == 0 | |
656 | && se->instance_id <= (*pse)->instance_id) | |
657 | se->instance_id = (*pse)->instance_id + 1; | |
658 | pse = &(*pse)->next; | |
659 | } | |
660 | *pse = se; | |
661 | return 0; | |
662 | } | |
663 | ||
664 | int register_savevm(const char *idstr, | |
665 | int instance_id, | |
666 | int version_id, | |
667 | SaveStateHandler *save_state, | |
668 | LoadStateHandler *load_state, | |
669 | void *opaque) | |
670 | { | |
671 | return register_savevm_live(idstr, instance_id, version_id, | |
672 | NULL, save_state, load_state, opaque); | |
673 | } | |
674 | ||
41bd13af AL |
675 | void unregister_savevm(const char *idstr, void *opaque) |
676 | { | |
677 | SaveStateEntry **pse; | |
678 | ||
679 | pse = &first_se; | |
680 | while (*pse != NULL) { | |
681 | if (strcmp((*pse)->idstr, idstr) == 0 && (*pse)->opaque == opaque) { | |
682 | SaveStateEntry *next = (*pse)->next; | |
683 | qemu_free(*pse); | |
684 | *pse = next; | |
685 | continue; | |
686 | } | |
687 | pse = &(*pse)->next; | |
688 | } | |
689 | } | |
690 | ||
a672b469 AL |
691 | #define QEMU_VM_FILE_MAGIC 0x5145564d |
692 | #define QEMU_VM_FILE_VERSION_COMPAT 0x00000002 | |
693 | #define QEMU_VM_FILE_VERSION 0x00000003 | |
694 | ||
695 | #define QEMU_VM_EOF 0x00 | |
696 | #define QEMU_VM_SECTION_START 0x01 | |
697 | #define QEMU_VM_SECTION_PART 0x02 | |
698 | #define QEMU_VM_SECTION_END 0x03 | |
699 | #define QEMU_VM_SECTION_FULL 0x04 | |
700 | ||
701 | int qemu_savevm_state_begin(QEMUFile *f) | |
702 | { | |
703 | SaveStateEntry *se; | |
704 | ||
705 | qemu_put_be32(f, QEMU_VM_FILE_MAGIC); | |
706 | qemu_put_be32(f, QEMU_VM_FILE_VERSION); | |
707 | ||
708 | for (se = first_se; se != NULL; se = se->next) { | |
709 | int len; | |
710 | ||
711 | if (se->save_live_state == NULL) | |
712 | continue; | |
713 | ||
714 | /* Section type */ | |
715 | qemu_put_byte(f, QEMU_VM_SECTION_START); | |
716 | qemu_put_be32(f, se->section_id); | |
717 | ||
718 | /* ID string */ | |
719 | len = strlen(se->idstr); | |
720 | qemu_put_byte(f, len); | |
721 | qemu_put_buffer(f, (uint8_t *)se->idstr, len); | |
722 | ||
723 | qemu_put_be32(f, se->instance_id); | |
724 | qemu_put_be32(f, se->version_id); | |
725 | ||
726 | se->save_live_state(f, QEMU_VM_SECTION_START, se->opaque); | |
727 | } | |
728 | ||
729 | if (qemu_file_has_error(f)) | |
730 | return -EIO; | |
731 | ||
732 | return 0; | |
733 | } | |
734 | ||
735 | int qemu_savevm_state_iterate(QEMUFile *f) | |
736 | { | |
737 | SaveStateEntry *se; | |
738 | int ret = 1; | |
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_PART); | |
746 | qemu_put_be32(f, se->section_id); | |
747 | ||
748 | ret &= !!se->save_live_state(f, QEMU_VM_SECTION_PART, se->opaque); | |
749 | } | |
750 | ||
751 | if (ret) | |
752 | return 1; | |
753 | ||
754 | if (qemu_file_has_error(f)) | |
755 | return -EIO; | |
756 | ||
757 | return 0; | |
758 | } | |
759 | ||
760 | int qemu_savevm_state_complete(QEMUFile *f) | |
761 | { | |
762 | SaveStateEntry *se; | |
763 | ||
764 | for (se = first_se; se != NULL; se = se->next) { | |
765 | if (se->save_live_state == NULL) | |
766 | continue; | |
767 | ||
768 | /* Section type */ | |
769 | qemu_put_byte(f, QEMU_VM_SECTION_END); | |
770 | qemu_put_be32(f, se->section_id); | |
771 | ||
772 | se->save_live_state(f, QEMU_VM_SECTION_END, se->opaque); | |
773 | } | |
774 | ||
775 | for(se = first_se; se != NULL; se = se->next) { | |
776 | int len; | |
777 | ||
778 | if (se->save_state == NULL) | |
779 | continue; | |
780 | ||
781 | /* Section type */ | |
782 | qemu_put_byte(f, QEMU_VM_SECTION_FULL); | |
783 | qemu_put_be32(f, se->section_id); | |
784 | ||
785 | /* ID string */ | |
786 | len = strlen(se->idstr); | |
787 | qemu_put_byte(f, len); | |
788 | qemu_put_buffer(f, (uint8_t *)se->idstr, len); | |
789 | ||
790 | qemu_put_be32(f, se->instance_id); | |
791 | qemu_put_be32(f, se->version_id); | |
792 | ||
793 | se->save_state(f, se->opaque); | |
794 | } | |
795 | ||
796 | qemu_put_byte(f, QEMU_VM_EOF); | |
797 | ||
798 | if (qemu_file_has_error(f)) | |
799 | return -EIO; | |
800 | ||
801 | return 0; | |
802 | } | |
803 | ||
804 | int qemu_savevm_state(QEMUFile *f) | |
805 | { | |
806 | int saved_vm_running; | |
807 | int ret; | |
808 | ||
809 | saved_vm_running = vm_running; | |
810 | vm_stop(0); | |
811 | ||
812 | bdrv_flush_all(); | |
813 | ||
814 | ret = qemu_savevm_state_begin(f); | |
815 | if (ret < 0) | |
816 | goto out; | |
817 | ||
818 | do { | |
819 | ret = qemu_savevm_state_iterate(f); | |
820 | if (ret < 0) | |
821 | goto out; | |
822 | } while (ret == 0); | |
823 | ||
824 | ret = qemu_savevm_state_complete(f); | |
825 | ||
826 | out: | |
827 | if (qemu_file_has_error(f)) | |
828 | ret = -EIO; | |
829 | ||
830 | if (!ret && saved_vm_running) | |
831 | vm_start(); | |
832 | ||
833 | return ret; | |
834 | } | |
835 | ||
836 | static SaveStateEntry *find_se(const char *idstr, int instance_id) | |
837 | { | |
838 | SaveStateEntry *se; | |
839 | ||
840 | for(se = first_se; se != NULL; se = se->next) { | |
841 | if (!strcmp(se->idstr, idstr) && | |
842 | instance_id == se->instance_id) | |
843 | return se; | |
844 | } | |
845 | return NULL; | |
846 | } | |
847 | ||
848 | typedef struct LoadStateEntry { | |
849 | SaveStateEntry *se; | |
850 | int section_id; | |
851 | int version_id; | |
852 | struct LoadStateEntry *next; | |
853 | } LoadStateEntry; | |
854 | ||
855 | static int qemu_loadvm_state_v2(QEMUFile *f) | |
856 | { | |
857 | SaveStateEntry *se; | |
858 | int len, ret, instance_id, record_len, version_id; | |
859 | int64_t total_len, end_pos, cur_pos; | |
860 | char idstr[256]; | |
861 | ||
862 | total_len = qemu_get_be64(f); | |
863 | end_pos = total_len + qemu_ftell(f); | |
864 | for(;;) { | |
865 | if (qemu_ftell(f) >= end_pos) | |
866 | break; | |
867 | len = qemu_get_byte(f); | |
868 | qemu_get_buffer(f, (uint8_t *)idstr, len); | |
869 | idstr[len] = '\0'; | |
870 | instance_id = qemu_get_be32(f); | |
871 | version_id = qemu_get_be32(f); | |
872 | record_len = qemu_get_be32(f); | |
873 | cur_pos = qemu_ftell(f); | |
874 | se = find_se(idstr, instance_id); | |
875 | if (!se) { | |
876 | fprintf(stderr, "qemu: warning: instance 0x%x of device '%s' not present in current VM\n", | |
877 | instance_id, idstr); | |
878 | } else { | |
879 | ret = se->load_state(f, se->opaque, version_id); | |
880 | if (ret < 0) { | |
881 | fprintf(stderr, "qemu: warning: error while loading state for instance 0x%x of device '%s'\n", | |
882 | instance_id, idstr); | |
d02f7094 | 883 | return ret; |
a672b469 AL |
884 | } |
885 | } | |
886 | /* always seek to exact end of record */ | |
887 | qemu_fseek(f, cur_pos + record_len, SEEK_SET); | |
888 | } | |
889 | ||
890 | if (qemu_file_has_error(f)) | |
891 | return -EIO; | |
892 | ||
893 | return 0; | |
894 | } | |
895 | ||
896 | int qemu_loadvm_state(QEMUFile *f) | |
897 | { | |
898 | LoadStateEntry *first_le = NULL; | |
899 | uint8_t section_type; | |
900 | unsigned int v; | |
901 | int ret; | |
902 | ||
903 | v = qemu_get_be32(f); | |
904 | if (v != QEMU_VM_FILE_MAGIC) | |
905 | return -EINVAL; | |
906 | ||
907 | v = qemu_get_be32(f); | |
908 | if (v == QEMU_VM_FILE_VERSION_COMPAT) | |
909 | return qemu_loadvm_state_v2(f); | |
910 | if (v != QEMU_VM_FILE_VERSION) | |
911 | return -ENOTSUP; | |
912 | ||
913 | while ((section_type = qemu_get_byte(f)) != QEMU_VM_EOF) { | |
914 | uint32_t instance_id, version_id, section_id; | |
915 | LoadStateEntry *le; | |
916 | SaveStateEntry *se; | |
917 | char idstr[257]; | |
918 | int len; | |
919 | ||
920 | switch (section_type) { | |
921 | case QEMU_VM_SECTION_START: | |
922 | case QEMU_VM_SECTION_FULL: | |
923 | /* Read section start */ | |
924 | section_id = qemu_get_be32(f); | |
925 | len = qemu_get_byte(f); | |
926 | qemu_get_buffer(f, (uint8_t *)idstr, len); | |
927 | idstr[len] = 0; | |
928 | instance_id = qemu_get_be32(f); | |
929 | version_id = qemu_get_be32(f); | |
930 | ||
931 | /* Find savevm section */ | |
932 | se = find_se(idstr, instance_id); | |
933 | if (se == NULL) { | |
934 | fprintf(stderr, "Unknown savevm section or instance '%s' %d\n", idstr, instance_id); | |
935 | ret = -EINVAL; | |
936 | goto out; | |
937 | } | |
938 | ||
939 | /* Validate version */ | |
940 | if (version_id > se->version_id) { | |
941 | fprintf(stderr, "savevm: unsupported version %d for '%s' v%d\n", | |
942 | version_id, idstr, se->version_id); | |
943 | ret = -EINVAL; | |
944 | goto out; | |
945 | } | |
946 | ||
947 | /* Add entry */ | |
948 | le = qemu_mallocz(sizeof(*le)); | |
a672b469 AL |
949 | |
950 | le->se = se; | |
951 | le->section_id = section_id; | |
952 | le->version_id = version_id; | |
953 | le->next = first_le; | |
954 | first_le = le; | |
955 | ||
956 | le->se->load_state(f, le->se->opaque, le->version_id); | |
957 | break; | |
958 | case QEMU_VM_SECTION_PART: | |
959 | case QEMU_VM_SECTION_END: | |
960 | section_id = qemu_get_be32(f); | |
961 | ||
962 | for (le = first_le; le && le->section_id != section_id; le = le->next); | |
963 | if (le == NULL) { | |
964 | fprintf(stderr, "Unknown savevm section %d\n", section_id); | |
965 | ret = -EINVAL; | |
966 | goto out; | |
967 | } | |
968 | ||
969 | le->se->load_state(f, le->se->opaque, le->version_id); | |
970 | break; | |
971 | default: | |
972 | fprintf(stderr, "Unknown savevm section type %d\n", section_type); | |
973 | ret = -EINVAL; | |
974 | goto out; | |
975 | } | |
976 | } | |
977 | ||
978 | ret = 0; | |
979 | ||
980 | out: | |
981 | while (first_le) { | |
982 | LoadStateEntry *le = first_le; | |
983 | first_le = first_le->next; | |
984 | qemu_free(le); | |
985 | } | |
986 | ||
987 | if (qemu_file_has_error(f)) | |
988 | ret = -EIO; | |
989 | ||
990 | return ret; | |
991 | } | |
992 | ||
993 | /* device can contain snapshots */ | |
994 | static int bdrv_can_snapshot(BlockDriverState *bs) | |
995 | { | |
996 | return (bs && | |
997 | !bdrv_is_removable(bs) && | |
998 | !bdrv_is_read_only(bs)); | |
999 | } | |
1000 | ||
1001 | /* device must be snapshots in order to have a reliable snapshot */ | |
1002 | static int bdrv_has_snapshot(BlockDriverState *bs) | |
1003 | { | |
1004 | return (bs && | |
1005 | !bdrv_is_removable(bs) && | |
1006 | !bdrv_is_read_only(bs)); | |
1007 | } | |
1008 | ||
1009 | static BlockDriverState *get_bs_snapshots(void) | |
1010 | { | |
1011 | BlockDriverState *bs; | |
1012 | int i; | |
1013 | ||
1014 | if (bs_snapshots) | |
1015 | return bs_snapshots; | |
1016 | for(i = 0; i <= nb_drives; i++) { | |
1017 | bs = drives_table[i].bdrv; | |
1018 | if (bdrv_can_snapshot(bs)) | |
1019 | goto ok; | |
1020 | } | |
1021 | return NULL; | |
1022 | ok: | |
1023 | bs_snapshots = bs; | |
1024 | return bs; | |
1025 | } | |
1026 | ||
1027 | static int bdrv_snapshot_find(BlockDriverState *bs, QEMUSnapshotInfo *sn_info, | |
1028 | const char *name) | |
1029 | { | |
1030 | QEMUSnapshotInfo *sn_tab, *sn; | |
1031 | int nb_sns, i, ret; | |
1032 | ||
1033 | ret = -ENOENT; | |
1034 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
1035 | if (nb_sns < 0) | |
1036 | return ret; | |
1037 | for(i = 0; i < nb_sns; i++) { | |
1038 | sn = &sn_tab[i]; | |
1039 | if (!strcmp(sn->id_str, name) || !strcmp(sn->name, name)) { | |
1040 | *sn_info = *sn; | |
1041 | ret = 0; | |
1042 | break; | |
1043 | } | |
1044 | } | |
1045 | qemu_free(sn_tab); | |
1046 | return ret; | |
1047 | } | |
1048 | ||
376253ec | 1049 | void do_savevm(Monitor *mon, const char *name) |
a672b469 AL |
1050 | { |
1051 | BlockDriverState *bs, *bs1; | |
1052 | QEMUSnapshotInfo sn1, *sn = &sn1, old_sn1, *old_sn = &old_sn1; | |
1053 | int must_delete, ret, i; | |
a672b469 AL |
1054 | QEMUFile *f; |
1055 | int saved_vm_running; | |
2d22b18f | 1056 | uint32_t vm_state_size; |
a672b469 AL |
1057 | #ifdef _WIN32 |
1058 | struct _timeb tb; | |
1059 | #else | |
1060 | struct timeval tv; | |
1061 | #endif | |
1062 | ||
1063 | bs = get_bs_snapshots(); | |
1064 | if (!bs) { | |
376253ec | 1065 | monitor_printf(mon, "No block device can accept snapshots\n"); |
a672b469 AL |
1066 | return; |
1067 | } | |
1068 | ||
1069 | /* ??? Should this occur after vm_stop? */ | |
1070 | qemu_aio_flush(); | |
1071 | ||
1072 | saved_vm_running = vm_running; | |
1073 | vm_stop(0); | |
1074 | ||
1075 | must_delete = 0; | |
1076 | if (name) { | |
1077 | ret = bdrv_snapshot_find(bs, old_sn, name); | |
1078 | if (ret >= 0) { | |
1079 | must_delete = 1; | |
1080 | } | |
1081 | } | |
1082 | memset(sn, 0, sizeof(*sn)); | |
1083 | if (must_delete) { | |
1084 | pstrcpy(sn->name, sizeof(sn->name), old_sn->name); | |
1085 | pstrcpy(sn->id_str, sizeof(sn->id_str), old_sn->id_str); | |
1086 | } else { | |
1087 | if (name) | |
1088 | pstrcpy(sn->name, sizeof(sn->name), name); | |
1089 | } | |
1090 | ||
1091 | /* fill auxiliary fields */ | |
1092 | #ifdef _WIN32 | |
1093 | _ftime(&tb); | |
1094 | sn->date_sec = tb.time; | |
1095 | sn->date_nsec = tb.millitm * 1000000; | |
1096 | #else | |
1097 | gettimeofday(&tv, NULL); | |
1098 | sn->date_sec = tv.tv_sec; | |
1099 | sn->date_nsec = tv.tv_usec * 1000; | |
1100 | #endif | |
1101 | sn->vm_clock_nsec = qemu_get_clock(vm_clock); | |
1102 | ||
a672b469 | 1103 | /* save the VM state */ |
45566e9c | 1104 | f = qemu_fopen_bdrv(bs, 1); |
a672b469 | 1105 | if (!f) { |
376253ec | 1106 | monitor_printf(mon, "Could not open VM state file\n"); |
a672b469 AL |
1107 | goto the_end; |
1108 | } | |
1109 | ret = qemu_savevm_state(f); | |
2d22b18f | 1110 | vm_state_size = qemu_ftell(f); |
a672b469 AL |
1111 | qemu_fclose(f); |
1112 | if (ret < 0) { | |
376253ec | 1113 | monitor_printf(mon, "Error %d while writing VM\n", ret); |
a672b469 AL |
1114 | goto the_end; |
1115 | } | |
1116 | ||
1117 | /* create the snapshots */ | |
1118 | ||
1119 | for(i = 0; i < nb_drives; i++) { | |
1120 | bs1 = drives_table[i].bdrv; | |
1121 | if (bdrv_has_snapshot(bs1)) { | |
1122 | if (must_delete) { | |
1123 | ret = bdrv_snapshot_delete(bs1, old_sn->id_str); | |
1124 | if (ret < 0) { | |
376253ec AL |
1125 | monitor_printf(mon, |
1126 | "Error while deleting snapshot on '%s'\n", | |
1127 | bdrv_get_device_name(bs1)); | |
a672b469 AL |
1128 | } |
1129 | } | |
2d22b18f AL |
1130 | /* Write VM state size only to the image that contains the state */ |
1131 | sn->vm_state_size = (bs == bs1 ? vm_state_size : 0); | |
a672b469 AL |
1132 | ret = bdrv_snapshot_create(bs1, sn); |
1133 | if (ret < 0) { | |
376253ec AL |
1134 | monitor_printf(mon, "Error while creating snapshot on '%s'\n", |
1135 | bdrv_get_device_name(bs1)); | |
a672b469 AL |
1136 | } |
1137 | } | |
1138 | } | |
1139 | ||
1140 | the_end: | |
1141 | if (saved_vm_running) | |
1142 | vm_start(); | |
1143 | } | |
1144 | ||
376253ec | 1145 | void do_loadvm(Monitor *mon, const char *name) |
a672b469 AL |
1146 | { |
1147 | BlockDriverState *bs, *bs1; | |
2d22b18f | 1148 | QEMUSnapshotInfo sn; |
a672b469 AL |
1149 | QEMUFile *f; |
1150 | int i, ret; | |
1151 | int saved_vm_running; | |
1152 | ||
1153 | bs = get_bs_snapshots(); | |
1154 | if (!bs) { | |
376253ec | 1155 | monitor_printf(mon, "No block device supports snapshots\n"); |
a672b469 AL |
1156 | return; |
1157 | } | |
1158 | ||
1159 | /* Flush all IO requests so they don't interfere with the new state. */ | |
1160 | qemu_aio_flush(); | |
1161 | ||
1162 | saved_vm_running = vm_running; | |
1163 | vm_stop(0); | |
1164 | ||
1165 | for(i = 0; i <= nb_drives; i++) { | |
1166 | bs1 = drives_table[i].bdrv; | |
1167 | if (bdrv_has_snapshot(bs1)) { | |
1168 | ret = bdrv_snapshot_goto(bs1, name); | |
1169 | if (ret < 0) { | |
1170 | if (bs != bs1) | |
376253ec | 1171 | monitor_printf(mon, "Warning: "); |
a672b469 AL |
1172 | switch(ret) { |
1173 | case -ENOTSUP: | |
376253ec AL |
1174 | monitor_printf(mon, |
1175 | "Snapshots not supported on device '%s'\n", | |
1176 | bdrv_get_device_name(bs1)); | |
a672b469 AL |
1177 | break; |
1178 | case -ENOENT: | |
376253ec AL |
1179 | monitor_printf(mon, "Could not find snapshot '%s' on " |
1180 | "device '%s'\n", | |
1181 | name, bdrv_get_device_name(bs1)); | |
a672b469 AL |
1182 | break; |
1183 | default: | |
376253ec AL |
1184 | monitor_printf(mon, "Error %d while activating snapshot on" |
1185 | " '%s'\n", ret, bdrv_get_device_name(bs1)); | |
a672b469 AL |
1186 | break; |
1187 | } | |
1188 | /* fatal on snapshot block device */ | |
1189 | if (bs == bs1) | |
1190 | goto the_end; | |
1191 | } | |
1192 | } | |
1193 | } | |
1194 | ||
2d22b18f AL |
1195 | /* Don't even try to load empty VM states */ |
1196 | ret = bdrv_snapshot_find(bs, &sn, name); | |
1197 | if ((ret >= 0) && (sn.vm_state_size == 0)) | |
1198 | goto the_end; | |
1199 | ||
a672b469 | 1200 | /* restore the VM state */ |
45566e9c | 1201 | f = qemu_fopen_bdrv(bs, 0); |
a672b469 | 1202 | if (!f) { |
376253ec | 1203 | monitor_printf(mon, "Could not open VM state file\n"); |
a672b469 AL |
1204 | goto the_end; |
1205 | } | |
1206 | ret = qemu_loadvm_state(f); | |
1207 | qemu_fclose(f); | |
1208 | if (ret < 0) { | |
376253ec | 1209 | monitor_printf(mon, "Error %d while loading VM state\n", ret); |
a672b469 AL |
1210 | } |
1211 | the_end: | |
1212 | if (saved_vm_running) | |
1213 | vm_start(); | |
1214 | } | |
1215 | ||
376253ec | 1216 | void do_delvm(Monitor *mon, const char *name) |
a672b469 AL |
1217 | { |
1218 | BlockDriverState *bs, *bs1; | |
1219 | int i, ret; | |
1220 | ||
1221 | bs = get_bs_snapshots(); | |
1222 | if (!bs) { | |
376253ec | 1223 | monitor_printf(mon, "No block device supports snapshots\n"); |
a672b469 AL |
1224 | return; |
1225 | } | |
1226 | ||
1227 | for(i = 0; i <= nb_drives; i++) { | |
1228 | bs1 = drives_table[i].bdrv; | |
1229 | if (bdrv_has_snapshot(bs1)) { | |
1230 | ret = bdrv_snapshot_delete(bs1, name); | |
1231 | if (ret < 0) { | |
1232 | if (ret == -ENOTSUP) | |
376253ec AL |
1233 | monitor_printf(mon, |
1234 | "Snapshots not supported on device '%s'\n", | |
1235 | bdrv_get_device_name(bs1)); | |
a672b469 | 1236 | else |
376253ec AL |
1237 | monitor_printf(mon, "Error %d while deleting snapshot on " |
1238 | "'%s'\n", ret, bdrv_get_device_name(bs1)); | |
a672b469 AL |
1239 | } |
1240 | } | |
1241 | } | |
1242 | } | |
1243 | ||
376253ec | 1244 | void do_info_snapshots(Monitor *mon) |
a672b469 AL |
1245 | { |
1246 | BlockDriverState *bs, *bs1; | |
1247 | QEMUSnapshotInfo *sn_tab, *sn; | |
1248 | int nb_sns, i; | |
1249 | char buf[256]; | |
1250 | ||
1251 | bs = get_bs_snapshots(); | |
1252 | if (!bs) { | |
376253ec | 1253 | monitor_printf(mon, "No available block device supports snapshots\n"); |
a672b469 AL |
1254 | return; |
1255 | } | |
376253ec | 1256 | monitor_printf(mon, "Snapshot devices:"); |
a672b469 AL |
1257 | for(i = 0; i <= nb_drives; i++) { |
1258 | bs1 = drives_table[i].bdrv; | |
1259 | if (bdrv_has_snapshot(bs1)) { | |
1260 | if (bs == bs1) | |
376253ec | 1261 | monitor_printf(mon, " %s", bdrv_get_device_name(bs1)); |
a672b469 AL |
1262 | } |
1263 | } | |
376253ec | 1264 | monitor_printf(mon, "\n"); |
a672b469 AL |
1265 | |
1266 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
1267 | if (nb_sns < 0) { | |
376253ec | 1268 | monitor_printf(mon, "bdrv_snapshot_list: error %d\n", nb_sns); |
a672b469 AL |
1269 | return; |
1270 | } | |
376253ec AL |
1271 | monitor_printf(mon, "Snapshot list (from %s):\n", |
1272 | bdrv_get_device_name(bs)); | |
1273 | monitor_printf(mon, "%s\n", bdrv_snapshot_dump(buf, sizeof(buf), NULL)); | |
a672b469 AL |
1274 | for(i = 0; i < nb_sns; i++) { |
1275 | sn = &sn_tab[i]; | |
376253ec | 1276 | monitor_printf(mon, "%s\n", bdrv_snapshot_dump(buf, sizeof(buf), sn)); |
a672b469 AL |
1277 | } |
1278 | qemu_free(sn_tab); | |
1279 | } |