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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 | ||
71e72a19 | 32 | /* Needed early for CONFIG_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> | |
71e72a19 | 55 | #ifdef CONFIG_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 | ||
7f79dd28 | 175 | typedef struct QEMUFileStdio |
a672b469 | 176 | { |
7f79dd28 | 177 | FILE *stdio_file; |
a672b469 | 178 | QEMUFile *file; |
7f79dd28 | 179 | } QEMUFileStdio; |
a672b469 AL |
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 | ||
7f79dd28 | 209 | static int stdio_put_buffer(void *opaque, const uint8_t *buf, int64_t pos, int size) |
a672b469 | 210 | { |
7f79dd28 PB |
211 | QEMUFileStdio *s = opaque; |
212 | return fwrite(buf, 1, size, s->stdio_file); | |
a672b469 AL |
213 | } |
214 | ||
7f79dd28 | 215 | static int stdio_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) |
a672b469 | 216 | { |
7f79dd28 PB |
217 | QEMUFileStdio *s = opaque; |
218 | FILE *fp = s->stdio_file; | |
8a67ec4d UL |
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 | ||
7f79dd28 PB |
228 | static int stdio_pclose(void *opaque) |
229 | { | |
230 | QEMUFileStdio *s = opaque; | |
231 | pclose(s->stdio_file); | |
232 | qemu_free(s); | |
233 | return 0; | |
234 | } | |
235 | ||
236 | static int stdio_fclose(void *opaque) | |
a672b469 | 237 | { |
7f79dd28 PB |
238 | QEMUFileStdio *s = opaque; |
239 | fclose(s->stdio_file); | |
a672b469 AL |
240 | qemu_free(s); |
241 | return 0; | |
242 | } | |
243 | ||
7f79dd28 | 244 | QEMUFile *qemu_popen(FILE *stdio_file, const char *mode) |
a672b469 | 245 | { |
7f79dd28 | 246 | QEMUFileStdio *s; |
a672b469 | 247 | |
7f79dd28 | 248 | if (stdio_file == NULL || mode == NULL || (mode[0] != 'r' && mode[0] != 'w') || mode[1] != 0) { |
a672b469 AL |
249 | fprintf(stderr, "qemu_popen: Argument validity check failed\n"); |
250 | return NULL; | |
251 | } | |
252 | ||
7f79dd28 | 253 | s = qemu_mallocz(sizeof(QEMUFileStdio)); |
a672b469 | 254 | |
7f79dd28 | 255 | s->stdio_file = stdio_file; |
a672b469 AL |
256 | |
257 | if(mode[0] == 'r') { | |
7f79dd28 | 258 | s->file = qemu_fopen_ops(s, NULL, stdio_get_buffer, stdio_pclose, NULL, NULL); |
a672b469 | 259 | } else { |
7f79dd28 | 260 | s->file = qemu_fopen_ops(s, stdio_put_buffer, NULL, stdio_pclose, NULL, NULL); |
a672b469 | 261 | } |
a672b469 AL |
262 | return s->file; |
263 | } | |
264 | ||
265 | QEMUFile *qemu_popen_cmd(const char *command, const char *mode) | |
266 | { | |
267 | FILE *popen_file; | |
268 | ||
269 | popen_file = popen(command, mode); | |
270 | if(popen_file == NULL) { | |
271 | return NULL; | |
272 | } | |
273 | ||
274 | return qemu_popen(popen_file, mode); | |
275 | } | |
276 | ||
7f79dd28 | 277 | int qemu_stdio_fd(QEMUFile *f) |
8a43b1ea | 278 | { |
7f79dd28 | 279 | QEMUFileStdio *p; |
8a43b1ea CL |
280 | int fd; |
281 | ||
7f79dd28 PB |
282 | p = (QEMUFileStdio *)f->opaque; |
283 | fd = fileno(p->stdio_file); | |
8a43b1ea CL |
284 | |
285 | return fd; | |
286 | } | |
287 | ||
a672b469 AL |
288 | QEMUFile *qemu_fopen_socket(int fd) |
289 | { | |
290 | QEMUFileSocket *s = qemu_mallocz(sizeof(QEMUFileSocket)); | |
291 | ||
a672b469 | 292 | s->fd = fd; |
19629537 | 293 | s->file = qemu_fopen_ops(s, NULL, socket_get_buffer, socket_close, NULL, NULL); |
a672b469 AL |
294 | return s->file; |
295 | } | |
296 | ||
a672b469 AL |
297 | static int file_put_buffer(void *opaque, const uint8_t *buf, |
298 | int64_t pos, int size) | |
299 | { | |
300 | QEMUFileStdio *s = opaque; | |
7f79dd28 PB |
301 | fseek(s->stdio_file, pos, SEEK_SET); |
302 | fwrite(buf, 1, size, s->stdio_file); | |
a672b469 AL |
303 | return size; |
304 | } | |
305 | ||
306 | static int file_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) | |
307 | { | |
308 | QEMUFileStdio *s = opaque; | |
7f79dd28 PB |
309 | fseek(s->stdio_file, pos, SEEK_SET); |
310 | return fread(buf, 1, size, s->stdio_file); | |
a672b469 AL |
311 | } |
312 | ||
313 | QEMUFile *qemu_fopen(const char *filename, const char *mode) | |
314 | { | |
315 | QEMUFileStdio *s; | |
316 | ||
7f79dd28 PB |
317 | if (mode == NULL || |
318 | (mode[0] != 'r' && mode[0] != 'w') || | |
319 | mode[1] != 'b' || mode[2] != 0) { | |
320 | fprintf(stderr, "qemu_fdopen: Argument validity check failed\n"); | |
321 | return NULL; | |
322 | } | |
323 | ||
a672b469 | 324 | s = qemu_mallocz(sizeof(QEMUFileStdio)); |
a672b469 | 325 | |
7f79dd28 PB |
326 | s->stdio_file = fopen(filename, mode); |
327 | if (!s->stdio_file) | |
a672b469 AL |
328 | goto fail; |
329 | ||
7f79dd28 PB |
330 | if(mode[0] == 'w') { |
331 | s->file = qemu_fopen_ops(s, file_put_buffer, NULL, stdio_fclose, NULL, NULL); | |
332 | } else { | |
333 | s->file = qemu_fopen_ops(s, NULL, file_get_buffer, stdio_fclose, NULL, NULL); | |
334 | } | |
335 | return s->file; | |
a672b469 | 336 | fail: |
a672b469 AL |
337 | qemu_free(s); |
338 | return NULL; | |
339 | } | |
340 | ||
178e08a5 | 341 | static int block_put_buffer(void *opaque, const uint8_t *buf, |
a672b469 AL |
342 | int64_t pos, int size) |
343 | { | |
45566e9c | 344 | bdrv_save_vmstate(opaque, buf, pos, size); |
a672b469 AL |
345 | return size; |
346 | } | |
347 | ||
178e08a5 | 348 | static int block_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) |
a672b469 | 349 | { |
45566e9c | 350 | return bdrv_load_vmstate(opaque, buf, pos, size); |
a672b469 AL |
351 | } |
352 | ||
353 | static int bdrv_fclose(void *opaque) | |
354 | { | |
a672b469 AL |
355 | return 0; |
356 | } | |
357 | ||
45566e9c | 358 | static QEMUFile *qemu_fopen_bdrv(BlockDriverState *bs, int is_writable) |
a672b469 | 359 | { |
a672b469 | 360 | if (is_writable) |
45566e9c CH |
361 | return qemu_fopen_ops(bs, block_put_buffer, NULL, bdrv_fclose, NULL, NULL); |
362 | return qemu_fopen_ops(bs, NULL, block_get_buffer, bdrv_fclose, NULL, NULL); | |
a672b469 AL |
363 | } |
364 | ||
365 | QEMUFile *qemu_fopen_ops(void *opaque, QEMUFilePutBufferFunc *put_buffer, | |
366 | QEMUFileGetBufferFunc *get_buffer, | |
367 | QEMUFileCloseFunc *close, | |
19629537 GC |
368 | QEMUFileRateLimit *rate_limit, |
369 | QEMUFileSetRateLimit *set_rate_limit) | |
a672b469 AL |
370 | { |
371 | QEMUFile *f; | |
372 | ||
373 | f = qemu_mallocz(sizeof(QEMUFile)); | |
a672b469 AL |
374 | |
375 | f->opaque = opaque; | |
376 | f->put_buffer = put_buffer; | |
377 | f->get_buffer = get_buffer; | |
378 | f->close = close; | |
379 | f->rate_limit = rate_limit; | |
19629537 | 380 | f->set_rate_limit = set_rate_limit; |
a672b469 AL |
381 | f->is_write = 0; |
382 | ||
383 | return f; | |
384 | } | |
385 | ||
386 | int qemu_file_has_error(QEMUFile *f) | |
387 | { | |
388 | return f->has_error; | |
389 | } | |
390 | ||
4dabe248 AL |
391 | void qemu_file_set_error(QEMUFile *f) |
392 | { | |
393 | f->has_error = 1; | |
394 | } | |
395 | ||
a672b469 AL |
396 | void qemu_fflush(QEMUFile *f) |
397 | { | |
398 | if (!f->put_buffer) | |
399 | return; | |
400 | ||
401 | if (f->is_write && f->buf_index > 0) { | |
402 | int len; | |
403 | ||
404 | len = f->put_buffer(f->opaque, f->buf, f->buf_offset, f->buf_index); | |
405 | if (len > 0) | |
406 | f->buf_offset += f->buf_index; | |
407 | else | |
408 | f->has_error = 1; | |
409 | f->buf_index = 0; | |
410 | } | |
411 | } | |
412 | ||
413 | static void qemu_fill_buffer(QEMUFile *f) | |
414 | { | |
415 | int len; | |
416 | ||
417 | if (!f->get_buffer) | |
418 | return; | |
419 | ||
420 | if (f->is_write) | |
421 | abort(); | |
422 | ||
423 | len = f->get_buffer(f->opaque, f->buf, f->buf_offset, IO_BUF_SIZE); | |
424 | if (len > 0) { | |
425 | f->buf_index = 0; | |
426 | f->buf_size = len; | |
427 | f->buf_offset += len; | |
428 | } else if (len != -EAGAIN) | |
429 | f->has_error = 1; | |
430 | } | |
431 | ||
432 | int qemu_fclose(QEMUFile *f) | |
433 | { | |
434 | int ret = 0; | |
435 | qemu_fflush(f); | |
436 | if (f->close) | |
437 | ret = f->close(f->opaque); | |
438 | qemu_free(f); | |
439 | return ret; | |
440 | } | |
441 | ||
442 | void qemu_file_put_notify(QEMUFile *f) | |
443 | { | |
444 | f->put_buffer(f->opaque, NULL, 0, 0); | |
445 | } | |
446 | ||
447 | void qemu_put_buffer(QEMUFile *f, const uint8_t *buf, int size) | |
448 | { | |
449 | int l; | |
450 | ||
451 | if (!f->has_error && f->is_write == 0 && f->buf_index > 0) { | |
452 | fprintf(stderr, | |
453 | "Attempted to write to buffer while read buffer is not empty\n"); | |
454 | abort(); | |
455 | } | |
456 | ||
457 | while (!f->has_error && size > 0) { | |
458 | l = IO_BUF_SIZE - f->buf_index; | |
459 | if (l > size) | |
460 | l = size; | |
461 | memcpy(f->buf + f->buf_index, buf, l); | |
462 | f->is_write = 1; | |
463 | f->buf_index += l; | |
464 | buf += l; | |
465 | size -= l; | |
466 | if (f->buf_index >= IO_BUF_SIZE) | |
467 | qemu_fflush(f); | |
468 | } | |
469 | } | |
470 | ||
471 | void qemu_put_byte(QEMUFile *f, int v) | |
472 | { | |
473 | if (!f->has_error && f->is_write == 0 && f->buf_index > 0) { | |
474 | fprintf(stderr, | |
475 | "Attempted to write to buffer while read buffer is not empty\n"); | |
476 | abort(); | |
477 | } | |
478 | ||
479 | f->buf[f->buf_index++] = v; | |
480 | f->is_write = 1; | |
481 | if (f->buf_index >= IO_BUF_SIZE) | |
482 | qemu_fflush(f); | |
483 | } | |
484 | ||
485 | int qemu_get_buffer(QEMUFile *f, uint8_t *buf, int size1) | |
486 | { | |
487 | int size, l; | |
488 | ||
489 | if (f->is_write) | |
490 | abort(); | |
491 | ||
492 | size = size1; | |
493 | while (size > 0) { | |
494 | l = f->buf_size - f->buf_index; | |
495 | if (l == 0) { | |
496 | qemu_fill_buffer(f); | |
497 | l = f->buf_size - f->buf_index; | |
498 | if (l == 0) | |
499 | break; | |
500 | } | |
501 | if (l > size) | |
502 | l = size; | |
503 | memcpy(buf, f->buf + f->buf_index, l); | |
504 | f->buf_index += l; | |
505 | buf += l; | |
506 | size -= l; | |
507 | } | |
508 | return size1 - size; | |
509 | } | |
510 | ||
511 | int qemu_get_byte(QEMUFile *f) | |
512 | { | |
513 | if (f->is_write) | |
514 | abort(); | |
515 | ||
516 | if (f->buf_index >= f->buf_size) { | |
517 | qemu_fill_buffer(f); | |
518 | if (f->buf_index >= f->buf_size) | |
519 | return 0; | |
520 | } | |
521 | return f->buf[f->buf_index++]; | |
522 | } | |
523 | ||
524 | int64_t qemu_ftell(QEMUFile *f) | |
525 | { | |
526 | return f->buf_offset - f->buf_size + f->buf_index; | |
527 | } | |
528 | ||
529 | int64_t qemu_fseek(QEMUFile *f, int64_t pos, int whence) | |
530 | { | |
531 | if (whence == SEEK_SET) { | |
532 | /* nothing to do */ | |
533 | } else if (whence == SEEK_CUR) { | |
534 | pos += qemu_ftell(f); | |
535 | } else { | |
536 | /* SEEK_END not supported */ | |
537 | return -1; | |
538 | } | |
539 | if (f->put_buffer) { | |
540 | qemu_fflush(f); | |
541 | f->buf_offset = pos; | |
542 | } else { | |
543 | f->buf_offset = pos; | |
544 | f->buf_index = 0; | |
545 | f->buf_size = 0; | |
546 | } | |
547 | return pos; | |
548 | } | |
549 | ||
550 | int qemu_file_rate_limit(QEMUFile *f) | |
551 | { | |
552 | if (f->rate_limit) | |
553 | return f->rate_limit(f->opaque); | |
554 | ||
555 | return 0; | |
556 | } | |
557 | ||
19629537 GC |
558 | size_t qemu_file_set_rate_limit(QEMUFile *f, size_t new_rate) |
559 | { | |
0bb05eaf GC |
560 | /* any failed or completed migration keeps its state to allow probing of |
561 | * migration data, but has no associated file anymore */ | |
562 | if (f && f->set_rate_limit) | |
19629537 GC |
563 | return f->set_rate_limit(f->opaque, new_rate); |
564 | ||
565 | return 0; | |
566 | } | |
567 | ||
a672b469 AL |
568 | void qemu_put_be16(QEMUFile *f, unsigned int v) |
569 | { | |
570 | qemu_put_byte(f, v >> 8); | |
571 | qemu_put_byte(f, v); | |
572 | } | |
573 | ||
574 | void qemu_put_be32(QEMUFile *f, unsigned int v) | |
575 | { | |
576 | qemu_put_byte(f, v >> 24); | |
577 | qemu_put_byte(f, v >> 16); | |
578 | qemu_put_byte(f, v >> 8); | |
579 | qemu_put_byte(f, v); | |
580 | } | |
581 | ||
582 | void qemu_put_be64(QEMUFile *f, uint64_t v) | |
583 | { | |
584 | qemu_put_be32(f, v >> 32); | |
585 | qemu_put_be32(f, v); | |
586 | } | |
587 | ||
588 | unsigned int qemu_get_be16(QEMUFile *f) | |
589 | { | |
590 | unsigned int v; | |
591 | v = qemu_get_byte(f) << 8; | |
592 | v |= qemu_get_byte(f); | |
593 | return v; | |
594 | } | |
595 | ||
596 | unsigned int qemu_get_be32(QEMUFile *f) | |
597 | { | |
598 | unsigned int v; | |
599 | v = qemu_get_byte(f) << 24; | |
600 | v |= qemu_get_byte(f) << 16; | |
601 | v |= qemu_get_byte(f) << 8; | |
602 | v |= qemu_get_byte(f); | |
603 | return v; | |
604 | } | |
605 | ||
606 | uint64_t qemu_get_be64(QEMUFile *f) | |
607 | { | |
608 | uint64_t v; | |
609 | v = (uint64_t)qemu_get_be32(f) << 32; | |
610 | v |= qemu_get_be32(f); | |
611 | return v; | |
612 | } | |
613 | ||
614 | typedef struct SaveStateEntry { | |
615 | char idstr[256]; | |
616 | int instance_id; | |
617 | int version_id; | |
618 | int section_id; | |
619 | SaveLiveStateHandler *save_live_state; | |
620 | SaveStateHandler *save_state; | |
621 | LoadStateHandler *load_state; | |
622 | void *opaque; | |
623 | struct SaveStateEntry *next; | |
624 | } SaveStateEntry; | |
625 | ||
626 | static SaveStateEntry *first_se; | |
627 | ||
628 | /* TODO: Individual devices generally have very little idea about the rest | |
629 | of the system, so instance_id should be removed/replaced. | |
630 | Meanwhile pass -1 as instance_id if you do not already have a clearly | |
631 | distinguishing id for all instances of your device class. */ | |
632 | int register_savevm_live(const char *idstr, | |
633 | int instance_id, | |
634 | int version_id, | |
635 | SaveLiveStateHandler *save_live_state, | |
636 | SaveStateHandler *save_state, | |
637 | LoadStateHandler *load_state, | |
638 | void *opaque) | |
639 | { | |
640 | SaveStateEntry *se, **pse; | |
641 | static int global_section_id; | |
642 | ||
643 | se = qemu_malloc(sizeof(SaveStateEntry)); | |
a672b469 AL |
644 | pstrcpy(se->idstr, sizeof(se->idstr), idstr); |
645 | se->instance_id = (instance_id == -1) ? 0 : instance_id; | |
646 | se->version_id = version_id; | |
647 | se->section_id = global_section_id++; | |
648 | se->save_live_state = save_live_state; | |
649 | se->save_state = save_state; | |
650 | se->load_state = load_state; | |
651 | se->opaque = opaque; | |
652 | se->next = NULL; | |
653 | ||
654 | /* add at the end of list */ | |
655 | pse = &first_se; | |
656 | while (*pse != NULL) { | |
657 | if (instance_id == -1 | |
658 | && strcmp(se->idstr, (*pse)->idstr) == 0 | |
659 | && se->instance_id <= (*pse)->instance_id) | |
660 | se->instance_id = (*pse)->instance_id + 1; | |
661 | pse = &(*pse)->next; | |
662 | } | |
663 | *pse = se; | |
664 | return 0; | |
665 | } | |
666 | ||
667 | int register_savevm(const char *idstr, | |
668 | int instance_id, | |
669 | int version_id, | |
670 | SaveStateHandler *save_state, | |
671 | LoadStateHandler *load_state, | |
672 | void *opaque) | |
673 | { | |
674 | return register_savevm_live(idstr, instance_id, version_id, | |
675 | NULL, save_state, load_state, opaque); | |
676 | } | |
677 | ||
41bd13af AL |
678 | void unregister_savevm(const char *idstr, void *opaque) |
679 | { | |
680 | SaveStateEntry **pse; | |
681 | ||
682 | pse = &first_se; | |
683 | while (*pse != NULL) { | |
684 | if (strcmp((*pse)->idstr, idstr) == 0 && (*pse)->opaque == opaque) { | |
685 | SaveStateEntry *next = (*pse)->next; | |
686 | qemu_free(*pse); | |
687 | *pse = next; | |
688 | continue; | |
689 | } | |
690 | pse = &(*pse)->next; | |
691 | } | |
692 | } | |
693 | ||
a672b469 AL |
694 | #define QEMU_VM_FILE_MAGIC 0x5145564d |
695 | #define QEMU_VM_FILE_VERSION_COMPAT 0x00000002 | |
696 | #define QEMU_VM_FILE_VERSION 0x00000003 | |
697 | ||
698 | #define QEMU_VM_EOF 0x00 | |
699 | #define QEMU_VM_SECTION_START 0x01 | |
700 | #define QEMU_VM_SECTION_PART 0x02 | |
701 | #define QEMU_VM_SECTION_END 0x03 | |
702 | #define QEMU_VM_SECTION_FULL 0x04 | |
703 | ||
704 | int qemu_savevm_state_begin(QEMUFile *f) | |
705 | { | |
706 | SaveStateEntry *se; | |
707 | ||
708 | qemu_put_be32(f, QEMU_VM_FILE_MAGIC); | |
709 | qemu_put_be32(f, QEMU_VM_FILE_VERSION); | |
710 | ||
711 | for (se = first_se; se != NULL; se = se->next) { | |
712 | int len; | |
713 | ||
714 | if (se->save_live_state == NULL) | |
715 | continue; | |
716 | ||
717 | /* Section type */ | |
718 | qemu_put_byte(f, QEMU_VM_SECTION_START); | |
719 | qemu_put_be32(f, se->section_id); | |
720 | ||
721 | /* ID string */ | |
722 | len = strlen(se->idstr); | |
723 | qemu_put_byte(f, len); | |
724 | qemu_put_buffer(f, (uint8_t *)se->idstr, len); | |
725 | ||
726 | qemu_put_be32(f, se->instance_id); | |
727 | qemu_put_be32(f, se->version_id); | |
728 | ||
729 | se->save_live_state(f, QEMU_VM_SECTION_START, se->opaque); | |
730 | } | |
731 | ||
732 | if (qemu_file_has_error(f)) | |
733 | return -EIO; | |
734 | ||
735 | return 0; | |
736 | } | |
737 | ||
738 | int qemu_savevm_state_iterate(QEMUFile *f) | |
739 | { | |
740 | SaveStateEntry *se; | |
741 | int ret = 1; | |
742 | ||
743 | for (se = first_se; se != NULL; se = se->next) { | |
744 | if (se->save_live_state == NULL) | |
745 | continue; | |
746 | ||
747 | /* Section type */ | |
748 | qemu_put_byte(f, QEMU_VM_SECTION_PART); | |
749 | qemu_put_be32(f, se->section_id); | |
750 | ||
751 | ret &= !!se->save_live_state(f, QEMU_VM_SECTION_PART, se->opaque); | |
752 | } | |
753 | ||
754 | if (ret) | |
755 | return 1; | |
756 | ||
757 | if (qemu_file_has_error(f)) | |
758 | return -EIO; | |
759 | ||
760 | return 0; | |
761 | } | |
762 | ||
763 | int qemu_savevm_state_complete(QEMUFile *f) | |
764 | { | |
765 | SaveStateEntry *se; | |
766 | ||
767 | for (se = first_se; se != NULL; se = se->next) { | |
768 | if (se->save_live_state == NULL) | |
769 | continue; | |
770 | ||
771 | /* Section type */ | |
772 | qemu_put_byte(f, QEMU_VM_SECTION_END); | |
773 | qemu_put_be32(f, se->section_id); | |
774 | ||
775 | se->save_live_state(f, QEMU_VM_SECTION_END, se->opaque); | |
776 | } | |
777 | ||
778 | for(se = first_se; se != NULL; se = se->next) { | |
779 | int len; | |
780 | ||
781 | if (se->save_state == NULL) | |
782 | continue; | |
783 | ||
784 | /* Section type */ | |
785 | qemu_put_byte(f, QEMU_VM_SECTION_FULL); | |
786 | qemu_put_be32(f, se->section_id); | |
787 | ||
788 | /* ID string */ | |
789 | len = strlen(se->idstr); | |
790 | qemu_put_byte(f, len); | |
791 | qemu_put_buffer(f, (uint8_t *)se->idstr, len); | |
792 | ||
793 | qemu_put_be32(f, se->instance_id); | |
794 | qemu_put_be32(f, se->version_id); | |
795 | ||
796 | se->save_state(f, se->opaque); | |
797 | } | |
798 | ||
799 | qemu_put_byte(f, QEMU_VM_EOF); | |
800 | ||
801 | if (qemu_file_has_error(f)) | |
802 | return -EIO; | |
803 | ||
804 | return 0; | |
805 | } | |
806 | ||
807 | int qemu_savevm_state(QEMUFile *f) | |
808 | { | |
809 | int saved_vm_running; | |
810 | int ret; | |
811 | ||
812 | saved_vm_running = vm_running; | |
813 | vm_stop(0); | |
814 | ||
815 | bdrv_flush_all(); | |
816 | ||
817 | ret = qemu_savevm_state_begin(f); | |
818 | if (ret < 0) | |
819 | goto out; | |
820 | ||
821 | do { | |
822 | ret = qemu_savevm_state_iterate(f); | |
823 | if (ret < 0) | |
824 | goto out; | |
825 | } while (ret == 0); | |
826 | ||
827 | ret = qemu_savevm_state_complete(f); | |
828 | ||
829 | out: | |
830 | if (qemu_file_has_error(f)) | |
831 | ret = -EIO; | |
832 | ||
833 | if (!ret && saved_vm_running) | |
834 | vm_start(); | |
835 | ||
836 | return ret; | |
837 | } | |
838 | ||
839 | static SaveStateEntry *find_se(const char *idstr, int instance_id) | |
840 | { | |
841 | SaveStateEntry *se; | |
842 | ||
843 | for(se = first_se; se != NULL; se = se->next) { | |
844 | if (!strcmp(se->idstr, idstr) && | |
845 | instance_id == se->instance_id) | |
846 | return se; | |
847 | } | |
848 | return NULL; | |
849 | } | |
850 | ||
851 | typedef struct LoadStateEntry { | |
852 | SaveStateEntry *se; | |
853 | int section_id; | |
854 | int version_id; | |
855 | struct LoadStateEntry *next; | |
856 | } LoadStateEntry; | |
857 | ||
858 | static int qemu_loadvm_state_v2(QEMUFile *f) | |
859 | { | |
860 | SaveStateEntry *se; | |
861 | int len, ret, instance_id, record_len, version_id; | |
862 | int64_t total_len, end_pos, cur_pos; | |
863 | char idstr[256]; | |
864 | ||
865 | total_len = qemu_get_be64(f); | |
866 | end_pos = total_len + qemu_ftell(f); | |
867 | for(;;) { | |
868 | if (qemu_ftell(f) >= end_pos) | |
869 | break; | |
870 | len = qemu_get_byte(f); | |
871 | qemu_get_buffer(f, (uint8_t *)idstr, len); | |
872 | idstr[len] = '\0'; | |
873 | instance_id = qemu_get_be32(f); | |
874 | version_id = qemu_get_be32(f); | |
875 | record_len = qemu_get_be32(f); | |
876 | cur_pos = qemu_ftell(f); | |
877 | se = find_se(idstr, instance_id); | |
878 | if (!se) { | |
879 | fprintf(stderr, "qemu: warning: instance 0x%x of device '%s' not present in current VM\n", | |
880 | instance_id, idstr); | |
881 | } else { | |
882 | ret = se->load_state(f, se->opaque, version_id); | |
883 | if (ret < 0) { | |
884 | fprintf(stderr, "qemu: warning: error while loading state for instance 0x%x of device '%s'\n", | |
885 | instance_id, idstr); | |
d02f7094 | 886 | return ret; |
a672b469 AL |
887 | } |
888 | } | |
889 | /* always seek to exact end of record */ | |
890 | qemu_fseek(f, cur_pos + record_len, SEEK_SET); | |
891 | } | |
892 | ||
893 | if (qemu_file_has_error(f)) | |
894 | return -EIO; | |
895 | ||
896 | return 0; | |
897 | } | |
898 | ||
899 | int qemu_loadvm_state(QEMUFile *f) | |
900 | { | |
901 | LoadStateEntry *first_le = NULL; | |
902 | uint8_t section_type; | |
903 | unsigned int v; | |
904 | int ret; | |
905 | ||
906 | v = qemu_get_be32(f); | |
907 | if (v != QEMU_VM_FILE_MAGIC) | |
908 | return -EINVAL; | |
909 | ||
910 | v = qemu_get_be32(f); | |
911 | if (v == QEMU_VM_FILE_VERSION_COMPAT) | |
912 | return qemu_loadvm_state_v2(f); | |
913 | if (v != QEMU_VM_FILE_VERSION) | |
914 | return -ENOTSUP; | |
915 | ||
916 | while ((section_type = qemu_get_byte(f)) != QEMU_VM_EOF) { | |
917 | uint32_t instance_id, version_id, section_id; | |
918 | LoadStateEntry *le; | |
919 | SaveStateEntry *se; | |
920 | char idstr[257]; | |
921 | int len; | |
922 | ||
923 | switch (section_type) { | |
924 | case QEMU_VM_SECTION_START: | |
925 | case QEMU_VM_SECTION_FULL: | |
926 | /* Read section start */ | |
927 | section_id = qemu_get_be32(f); | |
928 | len = qemu_get_byte(f); | |
929 | qemu_get_buffer(f, (uint8_t *)idstr, len); | |
930 | idstr[len] = 0; | |
931 | instance_id = qemu_get_be32(f); | |
932 | version_id = qemu_get_be32(f); | |
933 | ||
934 | /* Find savevm section */ | |
935 | se = find_se(idstr, instance_id); | |
936 | if (se == NULL) { | |
937 | fprintf(stderr, "Unknown savevm section or instance '%s' %d\n", idstr, instance_id); | |
938 | ret = -EINVAL; | |
939 | goto out; | |
940 | } | |
941 | ||
942 | /* Validate version */ | |
943 | if (version_id > se->version_id) { | |
944 | fprintf(stderr, "savevm: unsupported version %d for '%s' v%d\n", | |
945 | version_id, idstr, se->version_id); | |
946 | ret = -EINVAL; | |
947 | goto out; | |
948 | } | |
949 | ||
950 | /* Add entry */ | |
951 | le = qemu_mallocz(sizeof(*le)); | |
a672b469 AL |
952 | |
953 | le->se = se; | |
954 | le->section_id = section_id; | |
955 | le->version_id = version_id; | |
956 | le->next = first_le; | |
957 | first_le = le; | |
958 | ||
959 | le->se->load_state(f, le->se->opaque, le->version_id); | |
960 | break; | |
961 | case QEMU_VM_SECTION_PART: | |
962 | case QEMU_VM_SECTION_END: | |
963 | section_id = qemu_get_be32(f); | |
964 | ||
965 | for (le = first_le; le && le->section_id != section_id; le = le->next); | |
966 | if (le == NULL) { | |
967 | fprintf(stderr, "Unknown savevm section %d\n", section_id); | |
968 | ret = -EINVAL; | |
969 | goto out; | |
970 | } | |
971 | ||
972 | le->se->load_state(f, le->se->opaque, le->version_id); | |
973 | break; | |
974 | default: | |
975 | fprintf(stderr, "Unknown savevm section type %d\n", section_type); | |
976 | ret = -EINVAL; | |
977 | goto out; | |
978 | } | |
979 | } | |
980 | ||
981 | ret = 0; | |
982 | ||
983 | out: | |
984 | while (first_le) { | |
985 | LoadStateEntry *le = first_le; | |
986 | first_le = first_le->next; | |
987 | qemu_free(le); | |
988 | } | |
989 | ||
990 | if (qemu_file_has_error(f)) | |
991 | ret = -EIO; | |
992 | ||
993 | return ret; | |
994 | } | |
995 | ||
996 | /* device can contain snapshots */ | |
997 | static int bdrv_can_snapshot(BlockDriverState *bs) | |
998 | { | |
999 | return (bs && | |
1000 | !bdrv_is_removable(bs) && | |
1001 | !bdrv_is_read_only(bs)); | |
1002 | } | |
1003 | ||
1004 | /* device must be snapshots in order to have a reliable snapshot */ | |
1005 | static int bdrv_has_snapshot(BlockDriverState *bs) | |
1006 | { | |
1007 | return (bs && | |
1008 | !bdrv_is_removable(bs) && | |
1009 | !bdrv_is_read_only(bs)); | |
1010 | } | |
1011 | ||
1012 | static BlockDriverState *get_bs_snapshots(void) | |
1013 | { | |
1014 | BlockDriverState *bs; | |
751c6a17 | 1015 | DriveInfo *dinfo; |
a672b469 AL |
1016 | |
1017 | if (bs_snapshots) | |
1018 | return bs_snapshots; | |
751c6a17 GH |
1019 | TAILQ_FOREACH(dinfo, &drives, next) { |
1020 | bs = dinfo->bdrv; | |
a672b469 AL |
1021 | if (bdrv_can_snapshot(bs)) |
1022 | goto ok; | |
1023 | } | |
1024 | return NULL; | |
1025 | ok: | |
1026 | bs_snapshots = bs; | |
1027 | return bs; | |
1028 | } | |
1029 | ||
1030 | static int bdrv_snapshot_find(BlockDriverState *bs, QEMUSnapshotInfo *sn_info, | |
1031 | const char *name) | |
1032 | { | |
1033 | QEMUSnapshotInfo *sn_tab, *sn; | |
1034 | int nb_sns, i, ret; | |
1035 | ||
1036 | ret = -ENOENT; | |
1037 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
1038 | if (nb_sns < 0) | |
1039 | return ret; | |
1040 | for(i = 0; i < nb_sns; i++) { | |
1041 | sn = &sn_tab[i]; | |
1042 | if (!strcmp(sn->id_str, name) || !strcmp(sn->name, name)) { | |
1043 | *sn_info = *sn; | |
1044 | ret = 0; | |
1045 | break; | |
1046 | } | |
1047 | } | |
1048 | qemu_free(sn_tab); | |
1049 | return ret; | |
1050 | } | |
1051 | ||
376253ec | 1052 | void do_savevm(Monitor *mon, const char *name) |
a672b469 | 1053 | { |
751c6a17 | 1054 | DriveInfo *dinfo; |
a672b469 AL |
1055 | BlockDriverState *bs, *bs1; |
1056 | QEMUSnapshotInfo sn1, *sn = &sn1, old_sn1, *old_sn = &old_sn1; | |
751c6a17 | 1057 | int must_delete, ret; |
a672b469 AL |
1058 | QEMUFile *f; |
1059 | int saved_vm_running; | |
2d22b18f | 1060 | uint32_t vm_state_size; |
a672b469 AL |
1061 | #ifdef _WIN32 |
1062 | struct _timeb tb; | |
1063 | #else | |
1064 | struct timeval tv; | |
1065 | #endif | |
1066 | ||
1067 | bs = get_bs_snapshots(); | |
1068 | if (!bs) { | |
376253ec | 1069 | monitor_printf(mon, "No block device can accept snapshots\n"); |
a672b469 AL |
1070 | return; |
1071 | } | |
1072 | ||
1073 | /* ??? Should this occur after vm_stop? */ | |
1074 | qemu_aio_flush(); | |
1075 | ||
1076 | saved_vm_running = vm_running; | |
1077 | vm_stop(0); | |
1078 | ||
1079 | must_delete = 0; | |
1080 | if (name) { | |
1081 | ret = bdrv_snapshot_find(bs, old_sn, name); | |
1082 | if (ret >= 0) { | |
1083 | must_delete = 1; | |
1084 | } | |
1085 | } | |
1086 | memset(sn, 0, sizeof(*sn)); | |
1087 | if (must_delete) { | |
1088 | pstrcpy(sn->name, sizeof(sn->name), old_sn->name); | |
1089 | pstrcpy(sn->id_str, sizeof(sn->id_str), old_sn->id_str); | |
1090 | } else { | |
1091 | if (name) | |
1092 | pstrcpy(sn->name, sizeof(sn->name), name); | |
1093 | } | |
1094 | ||
1095 | /* fill auxiliary fields */ | |
1096 | #ifdef _WIN32 | |
1097 | _ftime(&tb); | |
1098 | sn->date_sec = tb.time; | |
1099 | sn->date_nsec = tb.millitm * 1000000; | |
1100 | #else | |
1101 | gettimeofday(&tv, NULL); | |
1102 | sn->date_sec = tv.tv_sec; | |
1103 | sn->date_nsec = tv.tv_usec * 1000; | |
1104 | #endif | |
1105 | sn->vm_clock_nsec = qemu_get_clock(vm_clock); | |
1106 | ||
a672b469 | 1107 | /* save the VM state */ |
45566e9c | 1108 | f = qemu_fopen_bdrv(bs, 1); |
a672b469 | 1109 | if (!f) { |
376253ec | 1110 | monitor_printf(mon, "Could not open VM state file\n"); |
a672b469 AL |
1111 | goto the_end; |
1112 | } | |
1113 | ret = qemu_savevm_state(f); | |
2d22b18f | 1114 | vm_state_size = qemu_ftell(f); |
a672b469 AL |
1115 | qemu_fclose(f); |
1116 | if (ret < 0) { | |
376253ec | 1117 | monitor_printf(mon, "Error %d while writing VM\n", ret); |
a672b469 AL |
1118 | goto the_end; |
1119 | } | |
1120 | ||
1121 | /* create the snapshots */ | |
1122 | ||
751c6a17 GH |
1123 | TAILQ_FOREACH(dinfo, &drives, next) { |
1124 | bs1 = dinfo->bdrv; | |
a672b469 AL |
1125 | if (bdrv_has_snapshot(bs1)) { |
1126 | if (must_delete) { | |
1127 | ret = bdrv_snapshot_delete(bs1, old_sn->id_str); | |
1128 | if (ret < 0) { | |
376253ec AL |
1129 | monitor_printf(mon, |
1130 | "Error while deleting snapshot on '%s'\n", | |
1131 | bdrv_get_device_name(bs1)); | |
a672b469 AL |
1132 | } |
1133 | } | |
2d22b18f AL |
1134 | /* Write VM state size only to the image that contains the state */ |
1135 | sn->vm_state_size = (bs == bs1 ? vm_state_size : 0); | |
a672b469 AL |
1136 | ret = bdrv_snapshot_create(bs1, sn); |
1137 | if (ret < 0) { | |
376253ec AL |
1138 | monitor_printf(mon, "Error while creating snapshot on '%s'\n", |
1139 | bdrv_get_device_name(bs1)); | |
a672b469 AL |
1140 | } |
1141 | } | |
1142 | } | |
1143 | ||
1144 | the_end: | |
1145 | if (saved_vm_running) | |
1146 | vm_start(); | |
1147 | } | |
1148 | ||
376253ec | 1149 | void do_loadvm(Monitor *mon, const char *name) |
a672b469 | 1150 | { |
751c6a17 | 1151 | DriveInfo *dinfo; |
a672b469 | 1152 | BlockDriverState *bs, *bs1; |
2d22b18f | 1153 | QEMUSnapshotInfo sn; |
a672b469 | 1154 | QEMUFile *f; |
751c6a17 | 1155 | int ret; |
a672b469 AL |
1156 | int saved_vm_running; |
1157 | ||
1158 | bs = get_bs_snapshots(); | |
1159 | if (!bs) { | |
376253ec | 1160 | monitor_printf(mon, "No block device supports snapshots\n"); |
a672b469 AL |
1161 | return; |
1162 | } | |
1163 | ||
1164 | /* Flush all IO requests so they don't interfere with the new state. */ | |
1165 | qemu_aio_flush(); | |
1166 | ||
1167 | saved_vm_running = vm_running; | |
1168 | vm_stop(0); | |
1169 | ||
751c6a17 GH |
1170 | TAILQ_FOREACH(dinfo, &drives, next) { |
1171 | bs1 = dinfo->bdrv; | |
a672b469 AL |
1172 | if (bdrv_has_snapshot(bs1)) { |
1173 | ret = bdrv_snapshot_goto(bs1, name); | |
1174 | if (ret < 0) { | |
1175 | if (bs != bs1) | |
376253ec | 1176 | monitor_printf(mon, "Warning: "); |
a672b469 AL |
1177 | switch(ret) { |
1178 | case -ENOTSUP: | |
376253ec AL |
1179 | monitor_printf(mon, |
1180 | "Snapshots not supported on device '%s'\n", | |
1181 | bdrv_get_device_name(bs1)); | |
a672b469 AL |
1182 | break; |
1183 | case -ENOENT: | |
376253ec AL |
1184 | monitor_printf(mon, "Could not find snapshot '%s' on " |
1185 | "device '%s'\n", | |
1186 | name, bdrv_get_device_name(bs1)); | |
a672b469 AL |
1187 | break; |
1188 | default: | |
376253ec AL |
1189 | monitor_printf(mon, "Error %d while activating snapshot on" |
1190 | " '%s'\n", ret, bdrv_get_device_name(bs1)); | |
a672b469 AL |
1191 | break; |
1192 | } | |
1193 | /* fatal on snapshot block device */ | |
1194 | if (bs == bs1) | |
1195 | goto the_end; | |
1196 | } | |
1197 | } | |
1198 | } | |
1199 | ||
2d22b18f AL |
1200 | /* Don't even try to load empty VM states */ |
1201 | ret = bdrv_snapshot_find(bs, &sn, name); | |
1202 | if ((ret >= 0) && (sn.vm_state_size == 0)) | |
1203 | goto the_end; | |
1204 | ||
a672b469 | 1205 | /* restore the VM state */ |
45566e9c | 1206 | f = qemu_fopen_bdrv(bs, 0); |
a672b469 | 1207 | if (!f) { |
376253ec | 1208 | monitor_printf(mon, "Could not open VM state file\n"); |
a672b469 AL |
1209 | goto the_end; |
1210 | } | |
1211 | ret = qemu_loadvm_state(f); | |
1212 | qemu_fclose(f); | |
1213 | if (ret < 0) { | |
376253ec | 1214 | monitor_printf(mon, "Error %d while loading VM state\n", ret); |
a672b469 AL |
1215 | } |
1216 | the_end: | |
1217 | if (saved_vm_running) | |
1218 | vm_start(); | |
1219 | } | |
1220 | ||
376253ec | 1221 | void do_delvm(Monitor *mon, const char *name) |
a672b469 | 1222 | { |
751c6a17 | 1223 | DriveInfo *dinfo; |
a672b469 | 1224 | BlockDriverState *bs, *bs1; |
751c6a17 | 1225 | int ret; |
a672b469 AL |
1226 | |
1227 | bs = get_bs_snapshots(); | |
1228 | if (!bs) { | |
376253ec | 1229 | monitor_printf(mon, "No block device supports snapshots\n"); |
a672b469 AL |
1230 | return; |
1231 | } | |
1232 | ||
751c6a17 GH |
1233 | TAILQ_FOREACH(dinfo, &drives, next) { |
1234 | bs1 = dinfo->bdrv; | |
a672b469 AL |
1235 | if (bdrv_has_snapshot(bs1)) { |
1236 | ret = bdrv_snapshot_delete(bs1, name); | |
1237 | if (ret < 0) { | |
1238 | if (ret == -ENOTSUP) | |
376253ec AL |
1239 | monitor_printf(mon, |
1240 | "Snapshots not supported on device '%s'\n", | |
1241 | bdrv_get_device_name(bs1)); | |
a672b469 | 1242 | else |
376253ec AL |
1243 | monitor_printf(mon, "Error %d while deleting snapshot on " |
1244 | "'%s'\n", ret, bdrv_get_device_name(bs1)); | |
a672b469 AL |
1245 | } |
1246 | } | |
1247 | } | |
1248 | } | |
1249 | ||
376253ec | 1250 | void do_info_snapshots(Monitor *mon) |
a672b469 | 1251 | { |
751c6a17 | 1252 | DriveInfo *dinfo; |
a672b469 AL |
1253 | BlockDriverState *bs, *bs1; |
1254 | QEMUSnapshotInfo *sn_tab, *sn; | |
1255 | int nb_sns, i; | |
1256 | char buf[256]; | |
1257 | ||
1258 | bs = get_bs_snapshots(); | |
1259 | if (!bs) { | |
376253ec | 1260 | monitor_printf(mon, "No available block device supports snapshots\n"); |
a672b469 AL |
1261 | return; |
1262 | } | |
376253ec | 1263 | monitor_printf(mon, "Snapshot devices:"); |
751c6a17 GH |
1264 | TAILQ_FOREACH(dinfo, &drives, next) { |
1265 | bs1 = dinfo->bdrv; | |
a672b469 AL |
1266 | if (bdrv_has_snapshot(bs1)) { |
1267 | if (bs == bs1) | |
376253ec | 1268 | monitor_printf(mon, " %s", bdrv_get_device_name(bs1)); |
a672b469 AL |
1269 | } |
1270 | } | |
376253ec | 1271 | monitor_printf(mon, "\n"); |
a672b469 AL |
1272 | |
1273 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
1274 | if (nb_sns < 0) { | |
376253ec | 1275 | monitor_printf(mon, "bdrv_snapshot_list: error %d\n", nb_sns); |
a672b469 AL |
1276 | return; |
1277 | } | |
376253ec AL |
1278 | monitor_printf(mon, "Snapshot list (from %s):\n", |
1279 | bdrv_get_device_name(bs)); | |
1280 | monitor_printf(mon, "%s\n", bdrv_snapshot_dump(buf, sizeof(buf), NULL)); | |
a672b469 AL |
1281 | for(i = 0; i < nb_sns; i++) { |
1282 | sn = &sn_tab[i]; | |
376253ec | 1283 | monitor_printf(mon, "%s\n", bdrv_snapshot_dump(buf, sizeof(buf), sn)); |
a672b469 AL |
1284 | } |
1285 | qemu_free(sn_tab); | |
1286 | } |