]>
Commit | Line | Data |
---|---|---|
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 { | |
193 | len = recv(s->fd, buf, size, 0); | |
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; | |
218 | return fread(buf, 1, size, s->popen_file); | |
219 | } | |
220 | ||
221 | static int popen_close(void *opaque) | |
222 | { | |
223 | QEMUFilePopen *s = opaque; | |
224 | pclose(s->popen_file); | |
225 | qemu_free(s); | |
226 | return 0; | |
227 | } | |
228 | ||
229 | QEMUFile *qemu_popen(FILE *popen_file, const char *mode) | |
230 | { | |
231 | QEMUFilePopen *s; | |
232 | ||
233 | if (popen_file == NULL || mode == NULL || (mode[0] != 'r' && mode[0] != 'w') || mode[1] != 0) { | |
234 | fprintf(stderr, "qemu_popen: Argument validity check failed\n"); | |
235 | return NULL; | |
236 | } | |
237 | ||
238 | s = qemu_mallocz(sizeof(QEMUFilePopen)); | |
a672b469 AL |
239 | |
240 | s->popen_file = popen_file; | |
241 | ||
242 | if(mode[0] == 'r') { | |
19629537 | 243 | s->file = qemu_fopen_ops(s, NULL, popen_get_buffer, popen_close, NULL, NULL); |
a672b469 | 244 | } else { |
19629537 | 245 | s->file = qemu_fopen_ops(s, popen_put_buffer, NULL, popen_close, NULL, NULL); |
a672b469 | 246 | } |
a672b469 AL |
247 | return s->file; |
248 | } | |
249 | ||
250 | QEMUFile *qemu_popen_cmd(const char *command, const char *mode) | |
251 | { | |
252 | FILE *popen_file; | |
253 | ||
254 | popen_file = popen(command, mode); | |
255 | if(popen_file == NULL) { | |
256 | return NULL; | |
257 | } | |
258 | ||
259 | return qemu_popen(popen_file, mode); | |
260 | } | |
261 | ||
8a43b1ea CL |
262 | int qemu_popen_fd(QEMUFile *f) |
263 | { | |
264 | QEMUFilePopen *p; | |
265 | int fd; | |
266 | ||
267 | p = (QEMUFilePopen *)f->opaque; | |
268 | fd = fileno(p->popen_file); | |
269 | ||
270 | return fd; | |
271 | } | |
272 | ||
a672b469 AL |
273 | QEMUFile *qemu_fopen_socket(int fd) |
274 | { | |
275 | QEMUFileSocket *s = qemu_mallocz(sizeof(QEMUFileSocket)); | |
276 | ||
a672b469 | 277 | s->fd = fd; |
19629537 | 278 | s->file = qemu_fopen_ops(s, NULL, socket_get_buffer, socket_close, NULL, NULL); |
a672b469 AL |
279 | return s->file; |
280 | } | |
281 | ||
282 | typedef struct QEMUFileStdio | |
283 | { | |
284 | FILE *outfile; | |
285 | } QEMUFileStdio; | |
286 | ||
287 | static int file_put_buffer(void *opaque, const uint8_t *buf, | |
288 | int64_t pos, int size) | |
289 | { | |
290 | QEMUFileStdio *s = opaque; | |
291 | fseek(s->outfile, pos, SEEK_SET); | |
292 | fwrite(buf, 1, size, s->outfile); | |
293 | return size; | |
294 | } | |
295 | ||
296 | static int file_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) | |
297 | { | |
298 | QEMUFileStdio *s = opaque; | |
299 | fseek(s->outfile, pos, SEEK_SET); | |
300 | return fread(buf, 1, size, s->outfile); | |
301 | } | |
302 | ||
303 | static int file_close(void *opaque) | |
304 | { | |
305 | QEMUFileStdio *s = opaque; | |
306 | fclose(s->outfile); | |
307 | qemu_free(s); | |
308 | return 0; | |
309 | } | |
310 | ||
311 | QEMUFile *qemu_fopen(const char *filename, const char *mode) | |
312 | { | |
313 | QEMUFileStdio *s; | |
314 | ||
315 | s = qemu_mallocz(sizeof(QEMUFileStdio)); | |
a672b469 AL |
316 | |
317 | s->outfile = fopen(filename, mode); | |
318 | if (!s->outfile) | |
319 | goto fail; | |
320 | ||
321 | if (!strcmp(mode, "wb")) | |
19629537 | 322 | return qemu_fopen_ops(s, file_put_buffer, NULL, file_close, NULL, NULL); |
a672b469 | 323 | else if (!strcmp(mode, "rb")) |
19629537 | 324 | return qemu_fopen_ops(s, NULL, file_get_buffer, file_close, NULL, NULL); |
a672b469 AL |
325 | |
326 | fail: | |
327 | if (s->outfile) | |
328 | fclose(s->outfile); | |
329 | qemu_free(s); | |
330 | return NULL; | |
331 | } | |
332 | ||
333 | typedef struct QEMUFileBdrv | |
334 | { | |
335 | BlockDriverState *bs; | |
336 | int64_t base_offset; | |
337 | } QEMUFileBdrv; | |
338 | ||
178e08a5 | 339 | static int block_put_buffer(void *opaque, const uint8_t *buf, |
a672b469 AL |
340 | int64_t pos, int size) |
341 | { | |
342 | QEMUFileBdrv *s = opaque; | |
178e08a5 | 343 | bdrv_put_buffer(s->bs, buf, s->base_offset + 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 AL |
348 | { |
349 | QEMUFileBdrv *s = opaque; | |
178e08a5 | 350 | return bdrv_get_buffer(s->bs, buf, s->base_offset + pos, size); |
a672b469 AL |
351 | } |
352 | ||
353 | static int bdrv_fclose(void *opaque) | |
354 | { | |
355 | QEMUFileBdrv *s = opaque; | |
356 | qemu_free(s); | |
357 | return 0; | |
358 | } | |
359 | ||
360 | static QEMUFile *qemu_fopen_bdrv(BlockDriverState *bs, int64_t offset, int is_writable) | |
361 | { | |
362 | QEMUFileBdrv *s; | |
363 | ||
364 | s = qemu_mallocz(sizeof(QEMUFileBdrv)); | |
a672b469 AL |
365 | |
366 | s->bs = bs; | |
367 | s->base_offset = offset; | |
368 | ||
369 | if (is_writable) | |
19629537 | 370 | return qemu_fopen_ops(s, block_put_buffer, NULL, bdrv_fclose, NULL, NULL); |
a672b469 | 371 | |
19629537 | 372 | return qemu_fopen_ops(s, NULL, block_get_buffer, bdrv_fclose, NULL, NULL); |
a672b469 AL |
373 | } |
374 | ||
375 | QEMUFile *qemu_fopen_ops(void *opaque, QEMUFilePutBufferFunc *put_buffer, | |
376 | QEMUFileGetBufferFunc *get_buffer, | |
377 | QEMUFileCloseFunc *close, | |
19629537 GC |
378 | QEMUFileRateLimit *rate_limit, |
379 | QEMUFileSetRateLimit *set_rate_limit) | |
a672b469 AL |
380 | { |
381 | QEMUFile *f; | |
382 | ||
383 | f = qemu_mallocz(sizeof(QEMUFile)); | |
a672b469 AL |
384 | |
385 | f->opaque = opaque; | |
386 | f->put_buffer = put_buffer; | |
387 | f->get_buffer = get_buffer; | |
388 | f->close = close; | |
389 | f->rate_limit = rate_limit; | |
19629537 | 390 | f->set_rate_limit = set_rate_limit; |
a672b469 AL |
391 | f->is_write = 0; |
392 | ||
393 | return f; | |
394 | } | |
395 | ||
396 | int qemu_file_has_error(QEMUFile *f) | |
397 | { | |
398 | return f->has_error; | |
399 | } | |
400 | ||
4dabe248 AL |
401 | void qemu_file_set_error(QEMUFile *f) |
402 | { | |
403 | f->has_error = 1; | |
404 | } | |
405 | ||
a672b469 AL |
406 | void qemu_fflush(QEMUFile *f) |
407 | { | |
408 | if (!f->put_buffer) | |
409 | return; | |
410 | ||
411 | if (f->is_write && f->buf_index > 0) { | |
412 | int len; | |
413 | ||
414 | len = f->put_buffer(f->opaque, f->buf, f->buf_offset, f->buf_index); | |
415 | if (len > 0) | |
416 | f->buf_offset += f->buf_index; | |
417 | else | |
418 | f->has_error = 1; | |
419 | f->buf_index = 0; | |
420 | } | |
421 | } | |
422 | ||
423 | static void qemu_fill_buffer(QEMUFile *f) | |
424 | { | |
425 | int len; | |
426 | ||
427 | if (!f->get_buffer) | |
428 | return; | |
429 | ||
430 | if (f->is_write) | |
431 | abort(); | |
432 | ||
433 | len = f->get_buffer(f->opaque, f->buf, f->buf_offset, IO_BUF_SIZE); | |
434 | if (len > 0) { | |
435 | f->buf_index = 0; | |
436 | f->buf_size = len; | |
437 | f->buf_offset += len; | |
438 | } else if (len != -EAGAIN) | |
439 | f->has_error = 1; | |
440 | } | |
441 | ||
442 | int qemu_fclose(QEMUFile *f) | |
443 | { | |
444 | int ret = 0; | |
445 | qemu_fflush(f); | |
446 | if (f->close) | |
447 | ret = f->close(f->opaque); | |
448 | qemu_free(f); | |
449 | return ret; | |
450 | } | |
451 | ||
452 | void qemu_file_put_notify(QEMUFile *f) | |
453 | { | |
454 | f->put_buffer(f->opaque, NULL, 0, 0); | |
455 | } | |
456 | ||
457 | void qemu_put_buffer(QEMUFile *f, const uint8_t *buf, int size) | |
458 | { | |
459 | int l; | |
460 | ||
461 | if (!f->has_error && f->is_write == 0 && f->buf_index > 0) { | |
462 | fprintf(stderr, | |
463 | "Attempted to write to buffer while read buffer is not empty\n"); | |
464 | abort(); | |
465 | } | |
466 | ||
467 | while (!f->has_error && size > 0) { | |
468 | l = IO_BUF_SIZE - f->buf_index; | |
469 | if (l > size) | |
470 | l = size; | |
471 | memcpy(f->buf + f->buf_index, buf, l); | |
472 | f->is_write = 1; | |
473 | f->buf_index += l; | |
474 | buf += l; | |
475 | size -= l; | |
476 | if (f->buf_index >= IO_BUF_SIZE) | |
477 | qemu_fflush(f); | |
478 | } | |
479 | } | |
480 | ||
481 | void qemu_put_byte(QEMUFile *f, int v) | |
482 | { | |
483 | if (!f->has_error && f->is_write == 0 && f->buf_index > 0) { | |
484 | fprintf(stderr, | |
485 | "Attempted to write to buffer while read buffer is not empty\n"); | |
486 | abort(); | |
487 | } | |
488 | ||
489 | f->buf[f->buf_index++] = v; | |
490 | f->is_write = 1; | |
491 | if (f->buf_index >= IO_BUF_SIZE) | |
492 | qemu_fflush(f); | |
493 | } | |
494 | ||
495 | int qemu_get_buffer(QEMUFile *f, uint8_t *buf, int size1) | |
496 | { | |
497 | int size, l; | |
498 | ||
499 | if (f->is_write) | |
500 | abort(); | |
501 | ||
502 | size = size1; | |
503 | while (size > 0) { | |
504 | l = f->buf_size - f->buf_index; | |
505 | if (l == 0) { | |
506 | qemu_fill_buffer(f); | |
507 | l = f->buf_size - f->buf_index; | |
508 | if (l == 0) | |
509 | break; | |
510 | } | |
511 | if (l > size) | |
512 | l = size; | |
513 | memcpy(buf, f->buf + f->buf_index, l); | |
514 | f->buf_index += l; | |
515 | buf += l; | |
516 | size -= l; | |
517 | } | |
518 | return size1 - size; | |
519 | } | |
520 | ||
521 | int qemu_get_byte(QEMUFile *f) | |
522 | { | |
523 | if (f->is_write) | |
524 | abort(); | |
525 | ||
526 | if (f->buf_index >= f->buf_size) { | |
527 | qemu_fill_buffer(f); | |
528 | if (f->buf_index >= f->buf_size) | |
529 | return 0; | |
530 | } | |
531 | return f->buf[f->buf_index++]; | |
532 | } | |
533 | ||
534 | int64_t qemu_ftell(QEMUFile *f) | |
535 | { | |
536 | return f->buf_offset - f->buf_size + f->buf_index; | |
537 | } | |
538 | ||
539 | int64_t qemu_fseek(QEMUFile *f, int64_t pos, int whence) | |
540 | { | |
541 | if (whence == SEEK_SET) { | |
542 | /* nothing to do */ | |
543 | } else if (whence == SEEK_CUR) { | |
544 | pos += qemu_ftell(f); | |
545 | } else { | |
546 | /* SEEK_END not supported */ | |
547 | return -1; | |
548 | } | |
549 | if (f->put_buffer) { | |
550 | qemu_fflush(f); | |
551 | f->buf_offset = pos; | |
552 | } else { | |
553 | f->buf_offset = pos; | |
554 | f->buf_index = 0; | |
555 | f->buf_size = 0; | |
556 | } | |
557 | return pos; | |
558 | } | |
559 | ||
560 | int qemu_file_rate_limit(QEMUFile *f) | |
561 | { | |
562 | if (f->rate_limit) | |
563 | return f->rate_limit(f->opaque); | |
564 | ||
565 | return 0; | |
566 | } | |
567 | ||
19629537 GC |
568 | size_t qemu_file_set_rate_limit(QEMUFile *f, size_t new_rate) |
569 | { | |
570 | if (f->set_rate_limit) | |
571 | return f->set_rate_limit(f->opaque, new_rate); | |
572 | ||
573 | return 0; | |
574 | } | |
575 | ||
a672b469 AL |
576 | void qemu_put_be16(QEMUFile *f, unsigned int v) |
577 | { | |
578 | qemu_put_byte(f, v >> 8); | |
579 | qemu_put_byte(f, v); | |
580 | } | |
581 | ||
582 | void qemu_put_be32(QEMUFile *f, unsigned int v) | |
583 | { | |
584 | qemu_put_byte(f, v >> 24); | |
585 | qemu_put_byte(f, v >> 16); | |
586 | qemu_put_byte(f, v >> 8); | |
587 | qemu_put_byte(f, v); | |
588 | } | |
589 | ||
590 | void qemu_put_be64(QEMUFile *f, uint64_t v) | |
591 | { | |
592 | qemu_put_be32(f, v >> 32); | |
593 | qemu_put_be32(f, v); | |
594 | } | |
595 | ||
596 | unsigned int qemu_get_be16(QEMUFile *f) | |
597 | { | |
598 | unsigned int v; | |
599 | v = qemu_get_byte(f) << 8; | |
600 | v |= qemu_get_byte(f); | |
601 | return v; | |
602 | } | |
603 | ||
604 | unsigned int qemu_get_be32(QEMUFile *f) | |
605 | { | |
606 | unsigned int v; | |
607 | v = qemu_get_byte(f) << 24; | |
608 | v |= qemu_get_byte(f) << 16; | |
609 | v |= qemu_get_byte(f) << 8; | |
610 | v |= qemu_get_byte(f); | |
611 | return v; | |
612 | } | |
613 | ||
614 | uint64_t qemu_get_be64(QEMUFile *f) | |
615 | { | |
616 | uint64_t v; | |
617 | v = (uint64_t)qemu_get_be32(f) << 32; | |
618 | v |= qemu_get_be32(f); | |
619 | return v; | |
620 | } | |
621 | ||
622 | typedef struct SaveStateEntry { | |
623 | char idstr[256]; | |
624 | int instance_id; | |
625 | int version_id; | |
626 | int section_id; | |
627 | SaveLiveStateHandler *save_live_state; | |
628 | SaveStateHandler *save_state; | |
629 | LoadStateHandler *load_state; | |
630 | void *opaque; | |
631 | struct SaveStateEntry *next; | |
632 | } SaveStateEntry; | |
633 | ||
634 | static SaveStateEntry *first_se; | |
635 | ||
636 | /* TODO: Individual devices generally have very little idea about the rest | |
637 | of the system, so instance_id should be removed/replaced. | |
638 | Meanwhile pass -1 as instance_id if you do not already have a clearly | |
639 | distinguishing id for all instances of your device class. */ | |
640 | int register_savevm_live(const char *idstr, | |
641 | int instance_id, | |
642 | int version_id, | |
643 | SaveLiveStateHandler *save_live_state, | |
644 | SaveStateHandler *save_state, | |
645 | LoadStateHandler *load_state, | |
646 | void *opaque) | |
647 | { | |
648 | SaveStateEntry *se, **pse; | |
649 | static int global_section_id; | |
650 | ||
651 | se = qemu_malloc(sizeof(SaveStateEntry)); | |
a672b469 AL |
652 | pstrcpy(se->idstr, sizeof(se->idstr), idstr); |
653 | se->instance_id = (instance_id == -1) ? 0 : instance_id; | |
654 | se->version_id = version_id; | |
655 | se->section_id = global_section_id++; | |
656 | se->save_live_state = save_live_state; | |
657 | se->save_state = save_state; | |
658 | se->load_state = load_state; | |
659 | se->opaque = opaque; | |
660 | se->next = NULL; | |
661 | ||
662 | /* add at the end of list */ | |
663 | pse = &first_se; | |
664 | while (*pse != NULL) { | |
665 | if (instance_id == -1 | |
666 | && strcmp(se->idstr, (*pse)->idstr) == 0 | |
667 | && se->instance_id <= (*pse)->instance_id) | |
668 | se->instance_id = (*pse)->instance_id + 1; | |
669 | pse = &(*pse)->next; | |
670 | } | |
671 | *pse = se; | |
672 | return 0; | |
673 | } | |
674 | ||
675 | int register_savevm(const char *idstr, | |
676 | int instance_id, | |
677 | int version_id, | |
678 | SaveStateHandler *save_state, | |
679 | LoadStateHandler *load_state, | |
680 | void *opaque) | |
681 | { | |
682 | return register_savevm_live(idstr, instance_id, version_id, | |
683 | NULL, save_state, load_state, opaque); | |
684 | } | |
685 | ||
41bd13af AL |
686 | void unregister_savevm(const char *idstr, void *opaque) |
687 | { | |
688 | SaveStateEntry **pse; | |
689 | ||
690 | pse = &first_se; | |
691 | while (*pse != NULL) { | |
692 | if (strcmp((*pse)->idstr, idstr) == 0 && (*pse)->opaque == opaque) { | |
693 | SaveStateEntry *next = (*pse)->next; | |
694 | qemu_free(*pse); | |
695 | *pse = next; | |
696 | continue; | |
697 | } | |
698 | pse = &(*pse)->next; | |
699 | } | |
700 | } | |
701 | ||
a672b469 AL |
702 | #define QEMU_VM_FILE_MAGIC 0x5145564d |
703 | #define QEMU_VM_FILE_VERSION_COMPAT 0x00000002 | |
704 | #define QEMU_VM_FILE_VERSION 0x00000003 | |
705 | ||
706 | #define QEMU_VM_EOF 0x00 | |
707 | #define QEMU_VM_SECTION_START 0x01 | |
708 | #define QEMU_VM_SECTION_PART 0x02 | |
709 | #define QEMU_VM_SECTION_END 0x03 | |
710 | #define QEMU_VM_SECTION_FULL 0x04 | |
711 | ||
712 | int qemu_savevm_state_begin(QEMUFile *f) | |
713 | { | |
714 | SaveStateEntry *se; | |
715 | ||
716 | qemu_put_be32(f, QEMU_VM_FILE_MAGIC); | |
717 | qemu_put_be32(f, QEMU_VM_FILE_VERSION); | |
718 | ||
719 | for (se = first_se; se != NULL; se = se->next) { | |
720 | int len; | |
721 | ||
722 | if (se->save_live_state == NULL) | |
723 | continue; | |
724 | ||
725 | /* Section type */ | |
726 | qemu_put_byte(f, QEMU_VM_SECTION_START); | |
727 | qemu_put_be32(f, se->section_id); | |
728 | ||
729 | /* ID string */ | |
730 | len = strlen(se->idstr); | |
731 | qemu_put_byte(f, len); | |
732 | qemu_put_buffer(f, (uint8_t *)se->idstr, len); | |
733 | ||
734 | qemu_put_be32(f, se->instance_id); | |
735 | qemu_put_be32(f, se->version_id); | |
736 | ||
737 | se->save_live_state(f, QEMU_VM_SECTION_START, se->opaque); | |
738 | } | |
739 | ||
740 | if (qemu_file_has_error(f)) | |
741 | return -EIO; | |
742 | ||
743 | return 0; | |
744 | } | |
745 | ||
746 | int qemu_savevm_state_iterate(QEMUFile *f) | |
747 | { | |
748 | SaveStateEntry *se; | |
749 | int ret = 1; | |
750 | ||
751 | for (se = first_se; se != NULL; se = se->next) { | |
752 | if (se->save_live_state == NULL) | |
753 | continue; | |
754 | ||
755 | /* Section type */ | |
756 | qemu_put_byte(f, QEMU_VM_SECTION_PART); | |
757 | qemu_put_be32(f, se->section_id); | |
758 | ||
759 | ret &= !!se->save_live_state(f, QEMU_VM_SECTION_PART, se->opaque); | |
760 | } | |
761 | ||
762 | if (ret) | |
763 | return 1; | |
764 | ||
765 | if (qemu_file_has_error(f)) | |
766 | return -EIO; | |
767 | ||
768 | return 0; | |
769 | } | |
770 | ||
771 | int qemu_savevm_state_complete(QEMUFile *f) | |
772 | { | |
773 | SaveStateEntry *se; | |
774 | ||
775 | for (se = first_se; se != NULL; se = se->next) { | |
776 | if (se->save_live_state == NULL) | |
777 | continue; | |
778 | ||
779 | /* Section type */ | |
780 | qemu_put_byte(f, QEMU_VM_SECTION_END); | |
781 | qemu_put_be32(f, se->section_id); | |
782 | ||
783 | se->save_live_state(f, QEMU_VM_SECTION_END, se->opaque); | |
784 | } | |
785 | ||
786 | for(se = first_se; se != NULL; se = se->next) { | |
787 | int len; | |
788 | ||
789 | if (se->save_state == NULL) | |
790 | continue; | |
791 | ||
792 | /* Section type */ | |
793 | qemu_put_byte(f, QEMU_VM_SECTION_FULL); | |
794 | qemu_put_be32(f, se->section_id); | |
795 | ||
796 | /* ID string */ | |
797 | len = strlen(se->idstr); | |
798 | qemu_put_byte(f, len); | |
799 | qemu_put_buffer(f, (uint8_t *)se->idstr, len); | |
800 | ||
801 | qemu_put_be32(f, se->instance_id); | |
802 | qemu_put_be32(f, se->version_id); | |
803 | ||
804 | se->save_state(f, se->opaque); | |
805 | } | |
806 | ||
807 | qemu_put_byte(f, QEMU_VM_EOF); | |
808 | ||
809 | if (qemu_file_has_error(f)) | |
810 | return -EIO; | |
811 | ||
812 | return 0; | |
813 | } | |
814 | ||
815 | int qemu_savevm_state(QEMUFile *f) | |
816 | { | |
817 | int saved_vm_running; | |
818 | int ret; | |
819 | ||
820 | saved_vm_running = vm_running; | |
821 | vm_stop(0); | |
822 | ||
823 | bdrv_flush_all(); | |
824 | ||
825 | ret = qemu_savevm_state_begin(f); | |
826 | if (ret < 0) | |
827 | goto out; | |
828 | ||
829 | do { | |
830 | ret = qemu_savevm_state_iterate(f); | |
831 | if (ret < 0) | |
832 | goto out; | |
833 | } while (ret == 0); | |
834 | ||
835 | ret = qemu_savevm_state_complete(f); | |
836 | ||
837 | out: | |
838 | if (qemu_file_has_error(f)) | |
839 | ret = -EIO; | |
840 | ||
841 | if (!ret && saved_vm_running) | |
842 | vm_start(); | |
843 | ||
844 | return ret; | |
845 | } | |
846 | ||
847 | static SaveStateEntry *find_se(const char *idstr, int instance_id) | |
848 | { | |
849 | SaveStateEntry *se; | |
850 | ||
851 | for(se = first_se; se != NULL; se = se->next) { | |
852 | if (!strcmp(se->idstr, idstr) && | |
853 | instance_id == se->instance_id) | |
854 | return se; | |
855 | } | |
856 | return NULL; | |
857 | } | |
858 | ||
859 | typedef struct LoadStateEntry { | |
860 | SaveStateEntry *se; | |
861 | int section_id; | |
862 | int version_id; | |
863 | struct LoadStateEntry *next; | |
864 | } LoadStateEntry; | |
865 | ||
866 | static int qemu_loadvm_state_v2(QEMUFile *f) | |
867 | { | |
868 | SaveStateEntry *se; | |
869 | int len, ret, instance_id, record_len, version_id; | |
870 | int64_t total_len, end_pos, cur_pos; | |
871 | char idstr[256]; | |
872 | ||
873 | total_len = qemu_get_be64(f); | |
874 | end_pos = total_len + qemu_ftell(f); | |
875 | for(;;) { | |
876 | if (qemu_ftell(f) >= end_pos) | |
877 | break; | |
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 | record_len = qemu_get_be32(f); | |
884 | cur_pos = qemu_ftell(f); | |
885 | se = find_se(idstr, instance_id); | |
886 | if (!se) { | |
887 | fprintf(stderr, "qemu: warning: instance 0x%x of device '%s' not present in current VM\n", | |
888 | instance_id, idstr); | |
889 | } else { | |
890 | ret = se->load_state(f, se->opaque, version_id); | |
891 | if (ret < 0) { | |
892 | fprintf(stderr, "qemu: warning: error while loading state for instance 0x%x of device '%s'\n", | |
893 | instance_id, idstr); | |
d02f7094 | 894 | return ret; |
a672b469 AL |
895 | } |
896 | } | |
897 | /* always seek to exact end of record */ | |
898 | qemu_fseek(f, cur_pos + record_len, SEEK_SET); | |
899 | } | |
900 | ||
901 | if (qemu_file_has_error(f)) | |
902 | return -EIO; | |
903 | ||
904 | return 0; | |
905 | } | |
906 | ||
907 | int qemu_loadvm_state(QEMUFile *f) | |
908 | { | |
909 | LoadStateEntry *first_le = NULL; | |
910 | uint8_t section_type; | |
911 | unsigned int v; | |
912 | int ret; | |
913 | ||
914 | v = qemu_get_be32(f); | |
915 | if (v != QEMU_VM_FILE_MAGIC) | |
916 | return -EINVAL; | |
917 | ||
918 | v = qemu_get_be32(f); | |
919 | if (v == QEMU_VM_FILE_VERSION_COMPAT) | |
920 | return qemu_loadvm_state_v2(f); | |
921 | if (v != QEMU_VM_FILE_VERSION) | |
922 | return -ENOTSUP; | |
923 | ||
924 | while ((section_type = qemu_get_byte(f)) != QEMU_VM_EOF) { | |
925 | uint32_t instance_id, version_id, section_id; | |
926 | LoadStateEntry *le; | |
927 | SaveStateEntry *se; | |
928 | char idstr[257]; | |
929 | int len; | |
930 | ||
931 | switch (section_type) { | |
932 | case QEMU_VM_SECTION_START: | |
933 | case QEMU_VM_SECTION_FULL: | |
934 | /* Read section start */ | |
935 | section_id = qemu_get_be32(f); | |
936 | len = qemu_get_byte(f); | |
937 | qemu_get_buffer(f, (uint8_t *)idstr, len); | |
938 | idstr[len] = 0; | |
939 | instance_id = qemu_get_be32(f); | |
940 | version_id = qemu_get_be32(f); | |
941 | ||
942 | /* Find savevm section */ | |
943 | se = find_se(idstr, instance_id); | |
944 | if (se == NULL) { | |
945 | fprintf(stderr, "Unknown savevm section or instance '%s' %d\n", idstr, instance_id); | |
946 | ret = -EINVAL; | |
947 | goto out; | |
948 | } | |
949 | ||
950 | /* Validate version */ | |
951 | if (version_id > se->version_id) { | |
952 | fprintf(stderr, "savevm: unsupported version %d for '%s' v%d\n", | |
953 | version_id, idstr, se->version_id); | |
954 | ret = -EINVAL; | |
955 | goto out; | |
956 | } | |
957 | ||
958 | /* Add entry */ | |
959 | le = qemu_mallocz(sizeof(*le)); | |
a672b469 AL |
960 | |
961 | le->se = se; | |
962 | le->section_id = section_id; | |
963 | le->version_id = version_id; | |
964 | le->next = first_le; | |
965 | first_le = le; | |
966 | ||
967 | le->se->load_state(f, le->se->opaque, le->version_id); | |
968 | break; | |
969 | case QEMU_VM_SECTION_PART: | |
970 | case QEMU_VM_SECTION_END: | |
971 | section_id = qemu_get_be32(f); | |
972 | ||
973 | for (le = first_le; le && le->section_id != section_id; le = le->next); | |
974 | if (le == NULL) { | |
975 | fprintf(stderr, "Unknown savevm section %d\n", section_id); | |
976 | ret = -EINVAL; | |
977 | goto out; | |
978 | } | |
979 | ||
980 | le->se->load_state(f, le->se->opaque, le->version_id); | |
981 | break; | |
982 | default: | |
983 | fprintf(stderr, "Unknown savevm section type %d\n", section_type); | |
984 | ret = -EINVAL; | |
985 | goto out; | |
986 | } | |
987 | } | |
988 | ||
989 | ret = 0; | |
990 | ||
991 | out: | |
992 | while (first_le) { | |
993 | LoadStateEntry *le = first_le; | |
994 | first_le = first_le->next; | |
995 | qemu_free(le); | |
996 | } | |
997 | ||
998 | if (qemu_file_has_error(f)) | |
999 | ret = -EIO; | |
1000 | ||
1001 | return ret; | |
1002 | } | |
1003 | ||
1004 | /* device can contain snapshots */ | |
1005 | static int bdrv_can_snapshot(BlockDriverState *bs) | |
1006 | { | |
1007 | return (bs && | |
1008 | !bdrv_is_removable(bs) && | |
1009 | !bdrv_is_read_only(bs)); | |
1010 | } | |
1011 | ||
1012 | /* device must be snapshots in order to have a reliable snapshot */ | |
1013 | static int bdrv_has_snapshot(BlockDriverState *bs) | |
1014 | { | |
1015 | return (bs && | |
1016 | !bdrv_is_removable(bs) && | |
1017 | !bdrv_is_read_only(bs)); | |
1018 | } | |
1019 | ||
1020 | static BlockDriverState *get_bs_snapshots(void) | |
1021 | { | |
1022 | BlockDriverState *bs; | |
1023 | int i; | |
1024 | ||
1025 | if (bs_snapshots) | |
1026 | return bs_snapshots; | |
1027 | for(i = 0; i <= nb_drives; i++) { | |
1028 | bs = drives_table[i].bdrv; | |
1029 | if (bdrv_can_snapshot(bs)) | |
1030 | goto ok; | |
1031 | } | |
1032 | return NULL; | |
1033 | ok: | |
1034 | bs_snapshots = bs; | |
1035 | return bs; | |
1036 | } | |
1037 | ||
1038 | static int bdrv_snapshot_find(BlockDriverState *bs, QEMUSnapshotInfo *sn_info, | |
1039 | const char *name) | |
1040 | { | |
1041 | QEMUSnapshotInfo *sn_tab, *sn; | |
1042 | int nb_sns, i, ret; | |
1043 | ||
1044 | ret = -ENOENT; | |
1045 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
1046 | if (nb_sns < 0) | |
1047 | return ret; | |
1048 | for(i = 0; i < nb_sns; i++) { | |
1049 | sn = &sn_tab[i]; | |
1050 | if (!strcmp(sn->id_str, name) || !strcmp(sn->name, name)) { | |
1051 | *sn_info = *sn; | |
1052 | ret = 0; | |
1053 | break; | |
1054 | } | |
1055 | } | |
1056 | qemu_free(sn_tab); | |
1057 | return ret; | |
1058 | } | |
1059 | ||
376253ec | 1060 | void do_savevm(Monitor *mon, const char *name) |
a672b469 AL |
1061 | { |
1062 | BlockDriverState *bs, *bs1; | |
1063 | QEMUSnapshotInfo sn1, *sn = &sn1, old_sn1, *old_sn = &old_sn1; | |
1064 | int must_delete, ret, i; | |
1065 | BlockDriverInfo bdi1, *bdi = &bdi1; | |
1066 | QEMUFile *f; | |
1067 | int saved_vm_running; | |
2d22b18f | 1068 | uint32_t vm_state_size; |
a672b469 AL |
1069 | #ifdef _WIN32 |
1070 | struct _timeb tb; | |
1071 | #else | |
1072 | struct timeval tv; | |
1073 | #endif | |
1074 | ||
1075 | bs = get_bs_snapshots(); | |
1076 | if (!bs) { | |
376253ec | 1077 | monitor_printf(mon, "No block device can accept snapshots\n"); |
a672b469 AL |
1078 | return; |
1079 | } | |
1080 | ||
1081 | /* ??? Should this occur after vm_stop? */ | |
1082 | qemu_aio_flush(); | |
1083 | ||
1084 | saved_vm_running = vm_running; | |
1085 | vm_stop(0); | |
1086 | ||
1087 | must_delete = 0; | |
1088 | if (name) { | |
1089 | ret = bdrv_snapshot_find(bs, old_sn, name); | |
1090 | if (ret >= 0) { | |
1091 | must_delete = 1; | |
1092 | } | |
1093 | } | |
1094 | memset(sn, 0, sizeof(*sn)); | |
1095 | if (must_delete) { | |
1096 | pstrcpy(sn->name, sizeof(sn->name), old_sn->name); | |
1097 | pstrcpy(sn->id_str, sizeof(sn->id_str), old_sn->id_str); | |
1098 | } else { | |
1099 | if (name) | |
1100 | pstrcpy(sn->name, sizeof(sn->name), name); | |
1101 | } | |
1102 | ||
1103 | /* fill auxiliary fields */ | |
1104 | #ifdef _WIN32 | |
1105 | _ftime(&tb); | |
1106 | sn->date_sec = tb.time; | |
1107 | sn->date_nsec = tb.millitm * 1000000; | |
1108 | #else | |
1109 | gettimeofday(&tv, NULL); | |
1110 | sn->date_sec = tv.tv_sec; | |
1111 | sn->date_nsec = tv.tv_usec * 1000; | |
1112 | #endif | |
1113 | sn->vm_clock_nsec = qemu_get_clock(vm_clock); | |
1114 | ||
1115 | if (bdrv_get_info(bs, bdi) < 0 || bdi->vm_state_offset <= 0) { | |
376253ec AL |
1116 | monitor_printf(mon, "Device %s does not support VM state snapshots\n", |
1117 | bdrv_get_device_name(bs)); | |
a672b469 AL |
1118 | goto the_end; |
1119 | } | |
1120 | ||
1121 | /* save the VM state */ | |
1122 | f = qemu_fopen_bdrv(bs, bdi->vm_state_offset, 1); | |
1123 | if (!f) { | |
376253ec | 1124 | monitor_printf(mon, "Could not open VM state file\n"); |
a672b469 AL |
1125 | goto the_end; |
1126 | } | |
1127 | ret = qemu_savevm_state(f); | |
2d22b18f | 1128 | vm_state_size = qemu_ftell(f); |
a672b469 AL |
1129 | qemu_fclose(f); |
1130 | if (ret < 0) { | |
376253ec | 1131 | monitor_printf(mon, "Error %d while writing VM\n", ret); |
a672b469 AL |
1132 | goto the_end; |
1133 | } | |
1134 | ||
1135 | /* create the snapshots */ | |
1136 | ||
1137 | for(i = 0; i < nb_drives; i++) { | |
1138 | bs1 = drives_table[i].bdrv; | |
1139 | if (bdrv_has_snapshot(bs1)) { | |
1140 | if (must_delete) { | |
1141 | ret = bdrv_snapshot_delete(bs1, old_sn->id_str); | |
1142 | if (ret < 0) { | |
376253ec AL |
1143 | monitor_printf(mon, |
1144 | "Error while deleting snapshot on '%s'\n", | |
1145 | bdrv_get_device_name(bs1)); | |
a672b469 AL |
1146 | } |
1147 | } | |
2d22b18f AL |
1148 | /* Write VM state size only to the image that contains the state */ |
1149 | sn->vm_state_size = (bs == bs1 ? vm_state_size : 0); | |
a672b469 AL |
1150 | ret = bdrv_snapshot_create(bs1, sn); |
1151 | if (ret < 0) { | |
376253ec AL |
1152 | monitor_printf(mon, "Error while creating snapshot on '%s'\n", |
1153 | bdrv_get_device_name(bs1)); | |
a672b469 AL |
1154 | } |
1155 | } | |
1156 | } | |
1157 | ||
1158 | the_end: | |
1159 | if (saved_vm_running) | |
1160 | vm_start(); | |
1161 | } | |
1162 | ||
376253ec | 1163 | void do_loadvm(Monitor *mon, const char *name) |
a672b469 AL |
1164 | { |
1165 | BlockDriverState *bs, *bs1; | |
1166 | BlockDriverInfo bdi1, *bdi = &bdi1; | |
2d22b18f | 1167 | QEMUSnapshotInfo sn; |
a672b469 AL |
1168 | QEMUFile *f; |
1169 | int i, ret; | |
1170 | int saved_vm_running; | |
1171 | ||
1172 | bs = get_bs_snapshots(); | |
1173 | if (!bs) { | |
376253ec | 1174 | monitor_printf(mon, "No block device supports snapshots\n"); |
a672b469 AL |
1175 | return; |
1176 | } | |
1177 | ||
1178 | /* Flush all IO requests so they don't interfere with the new state. */ | |
1179 | qemu_aio_flush(); | |
1180 | ||
1181 | saved_vm_running = vm_running; | |
1182 | vm_stop(0); | |
1183 | ||
1184 | for(i = 0; i <= nb_drives; i++) { | |
1185 | bs1 = drives_table[i].bdrv; | |
1186 | if (bdrv_has_snapshot(bs1)) { | |
1187 | ret = bdrv_snapshot_goto(bs1, name); | |
1188 | if (ret < 0) { | |
1189 | if (bs != bs1) | |
376253ec | 1190 | monitor_printf(mon, "Warning: "); |
a672b469 AL |
1191 | switch(ret) { |
1192 | case -ENOTSUP: | |
376253ec AL |
1193 | monitor_printf(mon, |
1194 | "Snapshots not supported on device '%s'\n", | |
1195 | bdrv_get_device_name(bs1)); | |
a672b469 AL |
1196 | break; |
1197 | case -ENOENT: | |
376253ec AL |
1198 | monitor_printf(mon, "Could not find snapshot '%s' on " |
1199 | "device '%s'\n", | |
1200 | name, bdrv_get_device_name(bs1)); | |
a672b469 AL |
1201 | break; |
1202 | default: | |
376253ec AL |
1203 | monitor_printf(mon, "Error %d while activating snapshot on" |
1204 | " '%s'\n", ret, bdrv_get_device_name(bs1)); | |
a672b469 AL |
1205 | break; |
1206 | } | |
1207 | /* fatal on snapshot block device */ | |
1208 | if (bs == bs1) | |
1209 | goto the_end; | |
1210 | } | |
1211 | } | |
1212 | } | |
1213 | ||
1214 | if (bdrv_get_info(bs, bdi) < 0 || bdi->vm_state_offset <= 0) { | |
376253ec AL |
1215 | monitor_printf(mon, "Device %s does not support VM state snapshots\n", |
1216 | bdrv_get_device_name(bs)); | |
a672b469 AL |
1217 | return; |
1218 | } | |
1219 | ||
2d22b18f AL |
1220 | /* Don't even try to load empty VM states */ |
1221 | ret = bdrv_snapshot_find(bs, &sn, name); | |
1222 | if ((ret >= 0) && (sn.vm_state_size == 0)) | |
1223 | goto the_end; | |
1224 | ||
a672b469 AL |
1225 | /* restore the VM state */ |
1226 | f = qemu_fopen_bdrv(bs, bdi->vm_state_offset, 0); | |
1227 | if (!f) { | |
376253ec | 1228 | monitor_printf(mon, "Could not open VM state file\n"); |
a672b469 AL |
1229 | goto the_end; |
1230 | } | |
1231 | ret = qemu_loadvm_state(f); | |
1232 | qemu_fclose(f); | |
1233 | if (ret < 0) { | |
376253ec | 1234 | monitor_printf(mon, "Error %d while loading VM state\n", ret); |
a672b469 AL |
1235 | } |
1236 | the_end: | |
1237 | if (saved_vm_running) | |
1238 | vm_start(); | |
1239 | } | |
1240 | ||
376253ec | 1241 | void do_delvm(Monitor *mon, const char *name) |
a672b469 AL |
1242 | { |
1243 | BlockDriverState *bs, *bs1; | |
1244 | int i, ret; | |
1245 | ||
1246 | bs = get_bs_snapshots(); | |
1247 | if (!bs) { | |
376253ec | 1248 | monitor_printf(mon, "No block device supports snapshots\n"); |
a672b469 AL |
1249 | return; |
1250 | } | |
1251 | ||
1252 | for(i = 0; i <= nb_drives; i++) { | |
1253 | bs1 = drives_table[i].bdrv; | |
1254 | if (bdrv_has_snapshot(bs1)) { | |
1255 | ret = bdrv_snapshot_delete(bs1, name); | |
1256 | if (ret < 0) { | |
1257 | if (ret == -ENOTSUP) | |
376253ec AL |
1258 | monitor_printf(mon, |
1259 | "Snapshots not supported on device '%s'\n", | |
1260 | bdrv_get_device_name(bs1)); | |
a672b469 | 1261 | else |
376253ec AL |
1262 | monitor_printf(mon, "Error %d while deleting snapshot on " |
1263 | "'%s'\n", ret, bdrv_get_device_name(bs1)); | |
a672b469 AL |
1264 | } |
1265 | } | |
1266 | } | |
1267 | } | |
1268 | ||
376253ec | 1269 | void do_info_snapshots(Monitor *mon) |
a672b469 AL |
1270 | { |
1271 | BlockDriverState *bs, *bs1; | |
1272 | QEMUSnapshotInfo *sn_tab, *sn; | |
1273 | int nb_sns, i; | |
1274 | char buf[256]; | |
1275 | ||
1276 | bs = get_bs_snapshots(); | |
1277 | if (!bs) { | |
376253ec | 1278 | monitor_printf(mon, "No available block device supports snapshots\n"); |
a672b469 AL |
1279 | return; |
1280 | } | |
376253ec | 1281 | monitor_printf(mon, "Snapshot devices:"); |
a672b469 AL |
1282 | for(i = 0; i <= nb_drives; i++) { |
1283 | bs1 = drives_table[i].bdrv; | |
1284 | if (bdrv_has_snapshot(bs1)) { | |
1285 | if (bs == bs1) | |
376253ec | 1286 | monitor_printf(mon, " %s", bdrv_get_device_name(bs1)); |
a672b469 AL |
1287 | } |
1288 | } | |
376253ec | 1289 | monitor_printf(mon, "\n"); |
a672b469 AL |
1290 | |
1291 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
1292 | if (nb_sns < 0) { | |
376253ec | 1293 | monitor_printf(mon, "bdrv_snapshot_list: error %d\n", nb_sns); |
a672b469 AL |
1294 | return; |
1295 | } | |
376253ec AL |
1296 | monitor_printf(mon, "Snapshot list (from %s):\n", |
1297 | bdrv_get_device_name(bs)); | |
1298 | monitor_printf(mon, "%s\n", bdrv_snapshot_dump(buf, sizeof(buf), NULL)); | |
a672b469 AL |
1299 | for(i = 0; i < nb_sns; i++) { |
1300 | sn = &sn_tab[i]; | |
376253ec | 1301 | monitor_printf(mon, "%s\n", bdrv_snapshot_dump(buf, sizeof(buf), sn)); |
a672b469 AL |
1302 | } |
1303 | qemu_free(sn_tab); | |
1304 | } |