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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> | |
a672b469 AL |
45 | #include <arpa/inet.h> |
46 | #include <dirent.h> | |
47 | #include <netdb.h> | |
48 | #include <sys/select.h> | |
71e72a19 | 49 | #ifdef CONFIG_BSD |
a672b469 | 50 | #include <sys/stat.h> |
c5e97233 | 51 | #if defined(__FreeBSD__) || defined(__DragonFly__) |
a672b469 AL |
52 | #include <libutil.h> |
53 | #else | |
54 | #include <util.h> | |
55 | #endif | |
56 | #elif defined (__GLIBC__) && defined (__FreeBSD_kernel__) | |
57 | #include <freebsd/stdlib.h> | |
58 | #else | |
59 | #ifdef __linux__ | |
60 | #include <pty.h> | |
61 | #include <malloc.h> | |
62 | #include <linux/rtc.h> | |
63 | #endif | |
64 | #endif | |
65 | #endif | |
66 | ||
67 | #ifdef _WIN32 | |
49dc768d | 68 | #include <windows.h> |
a672b469 AL |
69 | #include <malloc.h> |
70 | #include <sys/timeb.h> | |
71 | #include <mmsystem.h> | |
72 | #define getopt_long_only getopt_long | |
73 | #define memalign(align, size) malloc(size) | |
74 | #endif | |
75 | ||
511d2b14 BS |
76 | #include "qemu-common.h" |
77 | #include "hw/hw.h" | |
78 | #include "net.h" | |
79 | #include "monitor.h" | |
80 | #include "sysemu.h" | |
81 | #include "qemu-timer.h" | |
82 | #include "qemu-char.h" | |
83 | #include "block.h" | |
84 | #include "audio/audio.h" | |
85 | #include "migration.h" | |
86 | #include "qemu_socket.h" | |
72cf2d4f | 87 | #include "qemu-queue.h" |
511d2b14 | 88 | |
a672b469 AL |
89 | /* point to the block driver where the snapshots are managed */ |
90 | static BlockDriverState *bs_snapshots; | |
91 | ||
92 | #define SELF_ANNOUNCE_ROUNDS 5 | |
a672b469 | 93 | |
18995b98 N |
94 | #ifndef ETH_P_RARP |
95 | #define ETH_P_RARP 0x0835 | |
96 | #endif | |
97 | #define ARP_HTYPE_ETH 0x0001 | |
98 | #define ARP_PTYPE_IP 0x0800 | |
99 | #define ARP_OP_REQUEST_REV 0x3 | |
100 | ||
101 | static int announce_self_create(uint8_t *buf, | |
a672b469 AL |
102 | uint8_t *mac_addr) |
103 | { | |
18995b98 N |
104 | /* Ethernet header. */ |
105 | memset(buf, 0xff, 6); /* destination MAC addr */ | |
106 | memcpy(buf + 6, mac_addr, 6); /* source MAC addr */ | |
107 | *(uint16_t *)(buf + 12) = htons(ETH_P_RARP); /* ethertype */ | |
108 | ||
109 | /* RARP header. */ | |
110 | *(uint16_t *)(buf + 14) = htons(ARP_HTYPE_ETH); /* hardware addr space */ | |
111 | *(uint16_t *)(buf + 16) = htons(ARP_PTYPE_IP); /* protocol addr space */ | |
112 | *(buf + 18) = 6; /* hardware addr length (ethernet) */ | |
113 | *(buf + 19) = 4; /* protocol addr length (IPv4) */ | |
114 | *(uint16_t *)(buf + 20) = htons(ARP_OP_REQUEST_REV); /* opcode */ | |
115 | memcpy(buf + 22, mac_addr, 6); /* source hw addr */ | |
116 | memset(buf + 28, 0x00, 4); /* source protocol addr */ | |
117 | memcpy(buf + 32, mac_addr, 6); /* target hw addr */ | |
118 | memset(buf + 38, 0x00, 4); /* target protocol addr */ | |
119 | ||
120 | /* Padding to get up to 60 bytes (ethernet min packet size, minus FCS). */ | |
121 | memset(buf + 42, 0x00, 18); | |
122 | ||
123 | return 60; /* len (FCS will be added by hardware) */ | |
a672b469 AL |
124 | } |
125 | ||
ed8b330b | 126 | static void qemu_announce_self_once(void *opaque) |
a672b469 | 127 | { |
ed8b330b | 128 | int i, len; |
18995b98 | 129 | uint8_t buf[60]; |
ed8b330b GN |
130 | static int count = SELF_ANNOUNCE_ROUNDS; |
131 | QEMUTimer *timer = *(QEMUTimer **)opaque; | |
a672b469 | 132 | |
3450df30 AL |
133 | for (i = 0; i < MAX_NICS; i++) { |
134 | if (!nd_table[i].used) | |
135 | continue; | |
a672b469 | 136 | len = announce_self_create(buf, nd_table[i].macaddr); |
b04c4134 | 137 | qemu_send_packet_raw(nd_table[i].vc, buf, len); |
a672b469 | 138 | } |
18995b98 N |
139 | if (--count) { |
140 | /* delay 50ms, 150ms, 250ms, ... */ | |
141 | qemu_mod_timer(timer, qemu_get_clock(rt_clock) + | |
142 | 50 + (SELF_ANNOUNCE_ROUNDS - count - 1) * 100); | |
ed8b330b GN |
143 | } else { |
144 | qemu_del_timer(timer); | |
145 | qemu_free_timer(timer); | |
146 | } | |
147 | } | |
148 | ||
149 | void qemu_announce_self(void) | |
150 | { | |
151 | static QEMUTimer *timer; | |
152 | timer = qemu_new_timer(rt_clock, qemu_announce_self_once, &timer); | |
153 | qemu_announce_self_once(&timer); | |
a672b469 AL |
154 | } |
155 | ||
156 | /***********************************************************/ | |
157 | /* savevm/loadvm support */ | |
158 | ||
159 | #define IO_BUF_SIZE 32768 | |
160 | ||
161 | struct QEMUFile { | |
162 | QEMUFilePutBufferFunc *put_buffer; | |
163 | QEMUFileGetBufferFunc *get_buffer; | |
164 | QEMUFileCloseFunc *close; | |
165 | QEMUFileRateLimit *rate_limit; | |
19629537 | 166 | QEMUFileSetRateLimit *set_rate_limit; |
a672b469 AL |
167 | void *opaque; |
168 | int is_write; | |
169 | ||
170 | int64_t buf_offset; /* start of buffer when writing, end of buffer | |
171 | when reading */ | |
172 | int buf_index; | |
173 | int buf_size; /* 0 when writing */ | |
174 | uint8_t buf[IO_BUF_SIZE]; | |
175 | ||
176 | int has_error; | |
177 | }; | |
178 | ||
7f79dd28 | 179 | typedef struct QEMUFileStdio |
a672b469 | 180 | { |
7f79dd28 | 181 | FILE *stdio_file; |
a672b469 | 182 | QEMUFile *file; |
7f79dd28 | 183 | } QEMUFileStdio; |
a672b469 AL |
184 | |
185 | typedef struct QEMUFileSocket | |
186 | { | |
187 | int fd; | |
188 | QEMUFile *file; | |
189 | } QEMUFileSocket; | |
190 | ||
191 | static int socket_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) | |
192 | { | |
193 | QEMUFileSocket *s = opaque; | |
194 | ssize_t len; | |
195 | ||
196 | do { | |
c5b76b38 | 197 | len = recv(s->fd, (void *)buf, size, 0); |
a672b469 AL |
198 | } while (len == -1 && socket_error() == EINTR); |
199 | ||
200 | if (len == -1) | |
201 | len = -socket_error(); | |
202 | ||
203 | return len; | |
204 | } | |
205 | ||
206 | static int socket_close(void *opaque) | |
207 | { | |
208 | QEMUFileSocket *s = opaque; | |
209 | qemu_free(s); | |
210 | return 0; | |
211 | } | |
212 | ||
7f79dd28 | 213 | static int stdio_put_buffer(void *opaque, const uint8_t *buf, int64_t pos, int size) |
a672b469 | 214 | { |
7f79dd28 PB |
215 | QEMUFileStdio *s = opaque; |
216 | return fwrite(buf, 1, size, s->stdio_file); | |
a672b469 AL |
217 | } |
218 | ||
7f79dd28 | 219 | static int stdio_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) |
a672b469 | 220 | { |
7f79dd28 PB |
221 | QEMUFileStdio *s = opaque; |
222 | FILE *fp = s->stdio_file; | |
8a67ec4d UL |
223 | int bytes; |
224 | ||
225 | do { | |
226 | clearerr(fp); | |
227 | bytes = fread(buf, 1, size, fp); | |
228 | } while ((bytes == 0) && ferror(fp) && (errno == EINTR)); | |
229 | return bytes; | |
a672b469 AL |
230 | } |
231 | ||
7f79dd28 PB |
232 | static int stdio_pclose(void *opaque) |
233 | { | |
234 | QEMUFileStdio *s = opaque; | |
235 | pclose(s->stdio_file); | |
236 | qemu_free(s); | |
237 | return 0; | |
238 | } | |
239 | ||
240 | static int stdio_fclose(void *opaque) | |
a672b469 | 241 | { |
7f79dd28 PB |
242 | QEMUFileStdio *s = opaque; |
243 | fclose(s->stdio_file); | |
a672b469 AL |
244 | qemu_free(s); |
245 | return 0; | |
246 | } | |
247 | ||
7f79dd28 | 248 | QEMUFile *qemu_popen(FILE *stdio_file, const char *mode) |
a672b469 | 249 | { |
7f79dd28 | 250 | QEMUFileStdio *s; |
a672b469 | 251 | |
7f79dd28 | 252 | if (stdio_file == NULL || mode == NULL || (mode[0] != 'r' && mode[0] != 'w') || mode[1] != 0) { |
a672b469 AL |
253 | fprintf(stderr, "qemu_popen: Argument validity check failed\n"); |
254 | return NULL; | |
255 | } | |
256 | ||
7f79dd28 | 257 | s = qemu_mallocz(sizeof(QEMUFileStdio)); |
a672b469 | 258 | |
7f79dd28 | 259 | s->stdio_file = stdio_file; |
a672b469 AL |
260 | |
261 | if(mode[0] == 'r') { | |
7f79dd28 | 262 | s->file = qemu_fopen_ops(s, NULL, stdio_get_buffer, stdio_pclose, NULL, NULL); |
a672b469 | 263 | } else { |
7f79dd28 | 264 | s->file = qemu_fopen_ops(s, stdio_put_buffer, NULL, stdio_pclose, NULL, NULL); |
a672b469 | 265 | } |
a672b469 AL |
266 | return s->file; |
267 | } | |
268 | ||
269 | QEMUFile *qemu_popen_cmd(const char *command, const char *mode) | |
270 | { | |
271 | FILE *popen_file; | |
272 | ||
273 | popen_file = popen(command, mode); | |
274 | if(popen_file == NULL) { | |
275 | return NULL; | |
276 | } | |
277 | ||
278 | return qemu_popen(popen_file, mode); | |
279 | } | |
280 | ||
7f79dd28 | 281 | int qemu_stdio_fd(QEMUFile *f) |
8a43b1ea | 282 | { |
7f79dd28 | 283 | QEMUFileStdio *p; |
8a43b1ea CL |
284 | int fd; |
285 | ||
7f79dd28 PB |
286 | p = (QEMUFileStdio *)f->opaque; |
287 | fd = fileno(p->stdio_file); | |
8a43b1ea CL |
288 | |
289 | return fd; | |
290 | } | |
291 | ||
5ac1fad3 PB |
292 | QEMUFile *qemu_fdopen(int fd, const char *mode) |
293 | { | |
294 | QEMUFileStdio *s; | |
295 | ||
296 | if (mode == NULL || | |
297 | (mode[0] != 'r' && mode[0] != 'w') || | |
298 | mode[1] != 'b' || mode[2] != 0) { | |
299 | fprintf(stderr, "qemu_fdopen: Argument validity check failed\n"); | |
300 | return NULL; | |
301 | } | |
302 | ||
303 | s = qemu_mallocz(sizeof(QEMUFileStdio)); | |
304 | s->stdio_file = fdopen(fd, mode); | |
305 | if (!s->stdio_file) | |
306 | goto fail; | |
307 | ||
308 | if(mode[0] == 'r') { | |
309 | s->file = qemu_fopen_ops(s, NULL, stdio_get_buffer, stdio_fclose, NULL, NULL); | |
310 | } else { | |
311 | s->file = qemu_fopen_ops(s, stdio_put_buffer, NULL, stdio_fclose, NULL, NULL); | |
312 | } | |
313 | return s->file; | |
314 | ||
315 | fail: | |
316 | qemu_free(s); | |
317 | return NULL; | |
318 | } | |
319 | ||
a672b469 AL |
320 | QEMUFile *qemu_fopen_socket(int fd) |
321 | { | |
322 | QEMUFileSocket *s = qemu_mallocz(sizeof(QEMUFileSocket)); | |
323 | ||
a672b469 | 324 | s->fd = fd; |
19629537 | 325 | s->file = qemu_fopen_ops(s, NULL, socket_get_buffer, socket_close, NULL, NULL); |
a672b469 AL |
326 | return s->file; |
327 | } | |
328 | ||
a672b469 AL |
329 | static int file_put_buffer(void *opaque, const uint8_t *buf, |
330 | int64_t pos, int size) | |
331 | { | |
332 | QEMUFileStdio *s = opaque; | |
7f79dd28 PB |
333 | fseek(s->stdio_file, pos, SEEK_SET); |
334 | fwrite(buf, 1, size, s->stdio_file); | |
a672b469 AL |
335 | return size; |
336 | } | |
337 | ||
338 | static int file_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) | |
339 | { | |
340 | QEMUFileStdio *s = opaque; | |
7f79dd28 PB |
341 | fseek(s->stdio_file, pos, SEEK_SET); |
342 | return fread(buf, 1, size, s->stdio_file); | |
a672b469 AL |
343 | } |
344 | ||
345 | QEMUFile *qemu_fopen(const char *filename, const char *mode) | |
346 | { | |
347 | QEMUFileStdio *s; | |
348 | ||
7f79dd28 PB |
349 | if (mode == NULL || |
350 | (mode[0] != 'r' && mode[0] != 'w') || | |
351 | mode[1] != 'b' || mode[2] != 0) { | |
352 | fprintf(stderr, "qemu_fdopen: Argument validity check failed\n"); | |
353 | return NULL; | |
354 | } | |
355 | ||
a672b469 | 356 | s = qemu_mallocz(sizeof(QEMUFileStdio)); |
a672b469 | 357 | |
7f79dd28 PB |
358 | s->stdio_file = fopen(filename, mode); |
359 | if (!s->stdio_file) | |
a672b469 AL |
360 | goto fail; |
361 | ||
7f79dd28 PB |
362 | if(mode[0] == 'w') { |
363 | s->file = qemu_fopen_ops(s, file_put_buffer, NULL, stdio_fclose, NULL, NULL); | |
364 | } else { | |
365 | s->file = qemu_fopen_ops(s, NULL, file_get_buffer, stdio_fclose, NULL, NULL); | |
366 | } | |
367 | return s->file; | |
a672b469 | 368 | fail: |
a672b469 AL |
369 | qemu_free(s); |
370 | return NULL; | |
371 | } | |
372 | ||
178e08a5 | 373 | static int block_put_buffer(void *opaque, const uint8_t *buf, |
a672b469 AL |
374 | int64_t pos, int size) |
375 | { | |
45566e9c | 376 | bdrv_save_vmstate(opaque, buf, pos, size); |
a672b469 AL |
377 | return size; |
378 | } | |
379 | ||
178e08a5 | 380 | static int block_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) |
a672b469 | 381 | { |
45566e9c | 382 | return bdrv_load_vmstate(opaque, buf, pos, size); |
a672b469 AL |
383 | } |
384 | ||
385 | static int bdrv_fclose(void *opaque) | |
386 | { | |
a672b469 AL |
387 | return 0; |
388 | } | |
389 | ||
45566e9c | 390 | static QEMUFile *qemu_fopen_bdrv(BlockDriverState *bs, int is_writable) |
a672b469 | 391 | { |
a672b469 | 392 | if (is_writable) |
45566e9c CH |
393 | return qemu_fopen_ops(bs, block_put_buffer, NULL, bdrv_fclose, NULL, NULL); |
394 | return qemu_fopen_ops(bs, NULL, block_get_buffer, bdrv_fclose, NULL, NULL); | |
a672b469 AL |
395 | } |
396 | ||
397 | QEMUFile *qemu_fopen_ops(void *opaque, QEMUFilePutBufferFunc *put_buffer, | |
398 | QEMUFileGetBufferFunc *get_buffer, | |
399 | QEMUFileCloseFunc *close, | |
19629537 GC |
400 | QEMUFileRateLimit *rate_limit, |
401 | QEMUFileSetRateLimit *set_rate_limit) | |
a672b469 AL |
402 | { |
403 | QEMUFile *f; | |
404 | ||
405 | f = qemu_mallocz(sizeof(QEMUFile)); | |
a672b469 AL |
406 | |
407 | f->opaque = opaque; | |
408 | f->put_buffer = put_buffer; | |
409 | f->get_buffer = get_buffer; | |
410 | f->close = close; | |
411 | f->rate_limit = rate_limit; | |
19629537 | 412 | f->set_rate_limit = set_rate_limit; |
a672b469 AL |
413 | f->is_write = 0; |
414 | ||
415 | return f; | |
416 | } | |
417 | ||
418 | int qemu_file_has_error(QEMUFile *f) | |
419 | { | |
420 | return f->has_error; | |
421 | } | |
422 | ||
4dabe248 AL |
423 | void qemu_file_set_error(QEMUFile *f) |
424 | { | |
425 | f->has_error = 1; | |
426 | } | |
427 | ||
a672b469 AL |
428 | void qemu_fflush(QEMUFile *f) |
429 | { | |
430 | if (!f->put_buffer) | |
431 | return; | |
432 | ||
433 | if (f->is_write && f->buf_index > 0) { | |
434 | int len; | |
435 | ||
436 | len = f->put_buffer(f->opaque, f->buf, f->buf_offset, f->buf_index); | |
437 | if (len > 0) | |
438 | f->buf_offset += f->buf_index; | |
439 | else | |
440 | f->has_error = 1; | |
441 | f->buf_index = 0; | |
442 | } | |
443 | } | |
444 | ||
445 | static void qemu_fill_buffer(QEMUFile *f) | |
446 | { | |
447 | int len; | |
448 | ||
449 | if (!f->get_buffer) | |
450 | return; | |
451 | ||
452 | if (f->is_write) | |
453 | abort(); | |
454 | ||
455 | len = f->get_buffer(f->opaque, f->buf, f->buf_offset, IO_BUF_SIZE); | |
456 | if (len > 0) { | |
457 | f->buf_index = 0; | |
458 | f->buf_size = len; | |
459 | f->buf_offset += len; | |
460 | } else if (len != -EAGAIN) | |
461 | f->has_error = 1; | |
462 | } | |
463 | ||
464 | int qemu_fclose(QEMUFile *f) | |
465 | { | |
466 | int ret = 0; | |
467 | qemu_fflush(f); | |
468 | if (f->close) | |
469 | ret = f->close(f->opaque); | |
470 | qemu_free(f); | |
471 | return ret; | |
472 | } | |
473 | ||
474 | void qemu_file_put_notify(QEMUFile *f) | |
475 | { | |
476 | f->put_buffer(f->opaque, NULL, 0, 0); | |
477 | } | |
478 | ||
479 | void qemu_put_buffer(QEMUFile *f, const uint8_t *buf, int size) | |
480 | { | |
481 | int l; | |
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 | while (!f->has_error && size > 0) { | |
490 | l = IO_BUF_SIZE - f->buf_index; | |
491 | if (l > size) | |
492 | l = size; | |
493 | memcpy(f->buf + f->buf_index, buf, l); | |
494 | f->is_write = 1; | |
495 | f->buf_index += l; | |
496 | buf += l; | |
497 | size -= l; | |
498 | if (f->buf_index >= IO_BUF_SIZE) | |
499 | qemu_fflush(f); | |
500 | } | |
501 | } | |
502 | ||
503 | void qemu_put_byte(QEMUFile *f, int v) | |
504 | { | |
505 | if (!f->has_error && f->is_write == 0 && f->buf_index > 0) { | |
506 | fprintf(stderr, | |
507 | "Attempted to write to buffer while read buffer is not empty\n"); | |
508 | abort(); | |
509 | } | |
510 | ||
511 | f->buf[f->buf_index++] = v; | |
512 | f->is_write = 1; | |
513 | if (f->buf_index >= IO_BUF_SIZE) | |
514 | qemu_fflush(f); | |
515 | } | |
516 | ||
517 | int qemu_get_buffer(QEMUFile *f, uint8_t *buf, int size1) | |
518 | { | |
519 | int size, l; | |
520 | ||
521 | if (f->is_write) | |
522 | abort(); | |
523 | ||
524 | size = size1; | |
525 | while (size > 0) { | |
526 | l = f->buf_size - f->buf_index; | |
527 | if (l == 0) { | |
528 | qemu_fill_buffer(f); | |
529 | l = f->buf_size - f->buf_index; | |
530 | if (l == 0) | |
531 | break; | |
532 | } | |
533 | if (l > size) | |
534 | l = size; | |
535 | memcpy(buf, f->buf + f->buf_index, l); | |
536 | f->buf_index += l; | |
537 | buf += l; | |
538 | size -= l; | |
539 | } | |
540 | return size1 - size; | |
541 | } | |
542 | ||
543 | int qemu_get_byte(QEMUFile *f) | |
544 | { | |
545 | if (f->is_write) | |
546 | abort(); | |
547 | ||
548 | if (f->buf_index >= f->buf_size) { | |
549 | qemu_fill_buffer(f); | |
550 | if (f->buf_index >= f->buf_size) | |
551 | return 0; | |
552 | } | |
553 | return f->buf[f->buf_index++]; | |
554 | } | |
555 | ||
556 | int64_t qemu_ftell(QEMUFile *f) | |
557 | { | |
558 | return f->buf_offset - f->buf_size + f->buf_index; | |
559 | } | |
560 | ||
561 | int64_t qemu_fseek(QEMUFile *f, int64_t pos, int whence) | |
562 | { | |
563 | if (whence == SEEK_SET) { | |
564 | /* nothing to do */ | |
565 | } else if (whence == SEEK_CUR) { | |
566 | pos += qemu_ftell(f); | |
567 | } else { | |
568 | /* SEEK_END not supported */ | |
569 | return -1; | |
570 | } | |
571 | if (f->put_buffer) { | |
572 | qemu_fflush(f); | |
573 | f->buf_offset = pos; | |
574 | } else { | |
575 | f->buf_offset = pos; | |
576 | f->buf_index = 0; | |
577 | f->buf_size = 0; | |
578 | } | |
579 | return pos; | |
580 | } | |
581 | ||
582 | int qemu_file_rate_limit(QEMUFile *f) | |
583 | { | |
584 | if (f->rate_limit) | |
585 | return f->rate_limit(f->opaque); | |
586 | ||
587 | return 0; | |
588 | } | |
589 | ||
19629537 GC |
590 | size_t qemu_file_set_rate_limit(QEMUFile *f, size_t new_rate) |
591 | { | |
0bb05eaf GC |
592 | /* any failed or completed migration keeps its state to allow probing of |
593 | * migration data, but has no associated file anymore */ | |
594 | if (f && f->set_rate_limit) | |
19629537 GC |
595 | return f->set_rate_limit(f->opaque, new_rate); |
596 | ||
597 | return 0; | |
598 | } | |
599 | ||
a672b469 AL |
600 | void qemu_put_be16(QEMUFile *f, unsigned int v) |
601 | { | |
602 | qemu_put_byte(f, v >> 8); | |
603 | qemu_put_byte(f, v); | |
604 | } | |
605 | ||
606 | void qemu_put_be32(QEMUFile *f, unsigned int v) | |
607 | { | |
608 | qemu_put_byte(f, v >> 24); | |
609 | qemu_put_byte(f, v >> 16); | |
610 | qemu_put_byte(f, v >> 8); | |
611 | qemu_put_byte(f, v); | |
612 | } | |
613 | ||
614 | void qemu_put_be64(QEMUFile *f, uint64_t v) | |
615 | { | |
616 | qemu_put_be32(f, v >> 32); | |
617 | qemu_put_be32(f, v); | |
618 | } | |
619 | ||
620 | unsigned int qemu_get_be16(QEMUFile *f) | |
621 | { | |
622 | unsigned int v; | |
623 | v = qemu_get_byte(f) << 8; | |
624 | v |= qemu_get_byte(f); | |
625 | return v; | |
626 | } | |
627 | ||
628 | unsigned int qemu_get_be32(QEMUFile *f) | |
629 | { | |
630 | unsigned int v; | |
631 | v = qemu_get_byte(f) << 24; | |
632 | v |= qemu_get_byte(f) << 16; | |
633 | v |= qemu_get_byte(f) << 8; | |
634 | v |= qemu_get_byte(f); | |
635 | return v; | |
636 | } | |
637 | ||
638 | uint64_t qemu_get_be64(QEMUFile *f) | |
639 | { | |
640 | uint64_t v; | |
641 | v = (uint64_t)qemu_get_be32(f) << 32; | |
642 | v |= qemu_get_be32(f); | |
643 | return v; | |
644 | } | |
645 | ||
9ed7d6ae JQ |
646 | /* 8 bit int */ |
647 | ||
648 | static int get_int8(QEMUFile *f, void *pv, size_t size) | |
649 | { | |
650 | int8_t *v = pv; | |
651 | qemu_get_s8s(f, v); | |
652 | return 0; | |
653 | } | |
654 | ||
84e2e3eb | 655 | static void put_int8(QEMUFile *f, void *pv, size_t size) |
9ed7d6ae | 656 | { |
84e2e3eb | 657 | int8_t *v = pv; |
9ed7d6ae JQ |
658 | qemu_put_s8s(f, v); |
659 | } | |
660 | ||
661 | const VMStateInfo vmstate_info_int8 = { | |
662 | .name = "int8", | |
663 | .get = get_int8, | |
664 | .put = put_int8, | |
665 | }; | |
666 | ||
667 | /* 16 bit int */ | |
668 | ||
669 | static int get_int16(QEMUFile *f, void *pv, size_t size) | |
670 | { | |
671 | int16_t *v = pv; | |
672 | qemu_get_sbe16s(f, v); | |
673 | return 0; | |
674 | } | |
675 | ||
84e2e3eb | 676 | static void put_int16(QEMUFile *f, void *pv, size_t size) |
9ed7d6ae | 677 | { |
84e2e3eb | 678 | int16_t *v = pv; |
9ed7d6ae JQ |
679 | qemu_put_sbe16s(f, v); |
680 | } | |
681 | ||
682 | const VMStateInfo vmstate_info_int16 = { | |
683 | .name = "int16", | |
684 | .get = get_int16, | |
685 | .put = put_int16, | |
686 | }; | |
687 | ||
688 | /* 32 bit int */ | |
689 | ||
690 | static int get_int32(QEMUFile *f, void *pv, size_t size) | |
691 | { | |
692 | int32_t *v = pv; | |
693 | qemu_get_sbe32s(f, v); | |
694 | return 0; | |
695 | } | |
696 | ||
84e2e3eb | 697 | static void put_int32(QEMUFile *f, void *pv, size_t size) |
9ed7d6ae | 698 | { |
84e2e3eb | 699 | int32_t *v = pv; |
9ed7d6ae JQ |
700 | qemu_put_sbe32s(f, v); |
701 | } | |
702 | ||
703 | const VMStateInfo vmstate_info_int32 = { | |
704 | .name = "int32", | |
705 | .get = get_int32, | |
706 | .put = put_int32, | |
707 | }; | |
708 | ||
82501660 JQ |
709 | /* 32 bit int. See that the received value is the same than the one |
710 | in the field */ | |
711 | ||
712 | static int get_int32_equal(QEMUFile *f, void *pv, size_t size) | |
713 | { | |
714 | int32_t *v = pv; | |
715 | int32_t v2; | |
716 | qemu_get_sbe32s(f, &v2); | |
717 | ||
718 | if (*v == v2) | |
719 | return 0; | |
720 | return -EINVAL; | |
721 | } | |
722 | ||
723 | const VMStateInfo vmstate_info_int32_equal = { | |
724 | .name = "int32 equal", | |
725 | .get = get_int32_equal, | |
726 | .put = put_int32, | |
727 | }; | |
728 | ||
0a031e0a JQ |
729 | /* 32 bit int. See that the received value is the less or the same |
730 | than the one in the field */ | |
731 | ||
732 | static int get_int32_le(QEMUFile *f, void *pv, size_t size) | |
733 | { | |
734 | int32_t *old = pv; | |
735 | int32_t new; | |
736 | qemu_get_sbe32s(f, &new); | |
737 | ||
738 | if (*old <= new) | |
739 | return 0; | |
740 | return -EINVAL; | |
741 | } | |
742 | ||
743 | const VMStateInfo vmstate_info_int32_le = { | |
744 | .name = "int32 equal", | |
745 | .get = get_int32_le, | |
746 | .put = put_int32, | |
747 | }; | |
748 | ||
9ed7d6ae JQ |
749 | /* 64 bit int */ |
750 | ||
751 | static int get_int64(QEMUFile *f, void *pv, size_t size) | |
752 | { | |
753 | int64_t *v = pv; | |
754 | qemu_get_sbe64s(f, v); | |
755 | return 0; | |
756 | } | |
757 | ||
84e2e3eb | 758 | static void put_int64(QEMUFile *f, void *pv, size_t size) |
9ed7d6ae | 759 | { |
84e2e3eb | 760 | int64_t *v = pv; |
9ed7d6ae JQ |
761 | qemu_put_sbe64s(f, v); |
762 | } | |
763 | ||
764 | const VMStateInfo vmstate_info_int64 = { | |
765 | .name = "int64", | |
766 | .get = get_int64, | |
767 | .put = put_int64, | |
768 | }; | |
769 | ||
770 | /* 8 bit unsigned int */ | |
771 | ||
772 | static int get_uint8(QEMUFile *f, void *pv, size_t size) | |
773 | { | |
774 | uint8_t *v = pv; | |
775 | qemu_get_8s(f, v); | |
776 | return 0; | |
777 | } | |
778 | ||
84e2e3eb | 779 | static void put_uint8(QEMUFile *f, void *pv, size_t size) |
9ed7d6ae | 780 | { |
84e2e3eb | 781 | uint8_t *v = pv; |
9ed7d6ae JQ |
782 | qemu_put_8s(f, v); |
783 | } | |
784 | ||
785 | const VMStateInfo vmstate_info_uint8 = { | |
786 | .name = "uint8", | |
787 | .get = get_uint8, | |
788 | .put = put_uint8, | |
789 | }; | |
790 | ||
791 | /* 16 bit unsigned int */ | |
792 | ||
793 | static int get_uint16(QEMUFile *f, void *pv, size_t size) | |
794 | { | |
795 | uint16_t *v = pv; | |
796 | qemu_get_be16s(f, v); | |
797 | return 0; | |
798 | } | |
799 | ||
84e2e3eb | 800 | static void put_uint16(QEMUFile *f, void *pv, size_t size) |
9ed7d6ae | 801 | { |
84e2e3eb | 802 | uint16_t *v = pv; |
9ed7d6ae JQ |
803 | qemu_put_be16s(f, v); |
804 | } | |
805 | ||
806 | const VMStateInfo vmstate_info_uint16 = { | |
807 | .name = "uint16", | |
808 | .get = get_uint16, | |
809 | .put = put_uint16, | |
810 | }; | |
811 | ||
812 | /* 32 bit unsigned int */ | |
813 | ||
814 | static int get_uint32(QEMUFile *f, void *pv, size_t size) | |
815 | { | |
816 | uint32_t *v = pv; | |
817 | qemu_get_be32s(f, v); | |
818 | return 0; | |
819 | } | |
820 | ||
84e2e3eb | 821 | static void put_uint32(QEMUFile *f, void *pv, size_t size) |
9ed7d6ae | 822 | { |
84e2e3eb | 823 | uint32_t *v = pv; |
9ed7d6ae JQ |
824 | qemu_put_be32s(f, v); |
825 | } | |
826 | ||
827 | const VMStateInfo vmstate_info_uint32 = { | |
828 | .name = "uint32", | |
829 | .get = get_uint32, | |
830 | .put = put_uint32, | |
831 | }; | |
832 | ||
833 | /* 64 bit unsigned int */ | |
834 | ||
835 | static int get_uint64(QEMUFile *f, void *pv, size_t size) | |
836 | { | |
837 | uint64_t *v = pv; | |
838 | qemu_get_be64s(f, v); | |
839 | return 0; | |
840 | } | |
841 | ||
84e2e3eb | 842 | static void put_uint64(QEMUFile *f, void *pv, size_t size) |
9ed7d6ae | 843 | { |
84e2e3eb | 844 | uint64_t *v = pv; |
9ed7d6ae JQ |
845 | qemu_put_be64s(f, v); |
846 | } | |
847 | ||
848 | const VMStateInfo vmstate_info_uint64 = { | |
849 | .name = "uint64", | |
850 | .get = get_uint64, | |
851 | .put = put_uint64, | |
852 | }; | |
853 | ||
80cd83e7 JQ |
854 | /* 8 bit int. See that the received value is the same than the one |
855 | in the field */ | |
856 | ||
857 | static int get_uint8_equal(QEMUFile *f, void *pv, size_t size) | |
858 | { | |
859 | uint8_t *v = pv; | |
860 | uint8_t v2; | |
861 | qemu_get_8s(f, &v2); | |
862 | ||
863 | if (*v == v2) | |
864 | return 0; | |
865 | return -EINVAL; | |
866 | } | |
867 | ||
868 | const VMStateInfo vmstate_info_uint8_equal = { | |
aa1cce69 | 869 | .name = "uint8 equal", |
80cd83e7 JQ |
870 | .get = get_uint8_equal, |
871 | .put = put_uint8, | |
872 | }; | |
873 | ||
dc3b83a0 JQ |
874 | /* 16 bit unsigned int int. See that the received value is the same than the one |
875 | in the field */ | |
876 | ||
877 | static int get_uint16_equal(QEMUFile *f, void *pv, size_t size) | |
878 | { | |
879 | uint16_t *v = pv; | |
880 | uint16_t v2; | |
881 | qemu_get_be16s(f, &v2); | |
882 | ||
883 | if (*v == v2) | |
884 | return 0; | |
885 | return -EINVAL; | |
886 | } | |
887 | ||
888 | const VMStateInfo vmstate_info_uint16_equal = { | |
889 | .name = "uint16 equal", | |
890 | .get = get_uint16_equal, | |
891 | .put = put_uint16, | |
892 | }; | |
893 | ||
dde0463b JQ |
894 | /* timers */ |
895 | ||
896 | static int get_timer(QEMUFile *f, void *pv, size_t size) | |
897 | { | |
898 | QEMUTimer *v = pv; | |
899 | qemu_get_timer(f, v); | |
900 | return 0; | |
901 | } | |
902 | ||
84e2e3eb | 903 | static void put_timer(QEMUFile *f, void *pv, size_t size) |
dde0463b | 904 | { |
84e2e3eb | 905 | QEMUTimer *v = pv; |
dde0463b JQ |
906 | qemu_put_timer(f, v); |
907 | } | |
908 | ||
909 | const VMStateInfo vmstate_info_timer = { | |
910 | .name = "timer", | |
911 | .get = get_timer, | |
912 | .put = put_timer, | |
913 | }; | |
914 | ||
6f67c50f JQ |
915 | /* uint8_t buffers */ |
916 | ||
917 | static int get_buffer(QEMUFile *f, void *pv, size_t size) | |
918 | { | |
919 | uint8_t *v = pv; | |
920 | qemu_get_buffer(f, v, size); | |
921 | return 0; | |
922 | } | |
923 | ||
84e2e3eb | 924 | static void put_buffer(QEMUFile *f, void *pv, size_t size) |
6f67c50f | 925 | { |
84e2e3eb | 926 | uint8_t *v = pv; |
6f67c50f JQ |
927 | qemu_put_buffer(f, v, size); |
928 | } | |
929 | ||
930 | const VMStateInfo vmstate_info_buffer = { | |
931 | .name = "buffer", | |
932 | .get = get_buffer, | |
933 | .put = put_buffer, | |
934 | }; | |
935 | ||
76507c75 JQ |
936 | /* unused buffers: space that was used for some fields that are |
937 | not usefull anymore */ | |
938 | ||
939 | static int get_unused_buffer(QEMUFile *f, void *pv, size_t size) | |
940 | { | |
941 | qemu_fseek(f, size, SEEK_CUR); | |
942 | return 0; | |
943 | } | |
944 | ||
945 | static void put_unused_buffer(QEMUFile *f, void *pv, size_t size) | |
946 | { | |
947 | qemu_fseek(f, size, SEEK_CUR); | |
948 | } | |
949 | ||
950 | const VMStateInfo vmstate_info_unused_buffer = { | |
951 | .name = "unused_buffer", | |
952 | .get = get_unused_buffer, | |
953 | .put = put_unused_buffer, | |
954 | }; | |
955 | ||
a672b469 | 956 | typedef struct SaveStateEntry { |
72cf2d4f | 957 | QTAILQ_ENTRY(SaveStateEntry) entry; |
a672b469 AL |
958 | char idstr[256]; |
959 | int instance_id; | |
960 | int version_id; | |
961 | int section_id; | |
962 | SaveLiveStateHandler *save_live_state; | |
963 | SaveStateHandler *save_state; | |
964 | LoadStateHandler *load_state; | |
9ed7d6ae | 965 | const VMStateDescription *vmsd; |
a672b469 | 966 | void *opaque; |
a672b469 AL |
967 | } SaveStateEntry; |
968 | ||
72cf2d4f BS |
969 | static QTAILQ_HEAD(savevm_handlers, SaveStateEntry) savevm_handlers = |
970 | QTAILQ_HEAD_INITIALIZER(savevm_handlers); | |
9ed7d6ae | 971 | static int global_section_id; |
a672b469 | 972 | |
8718e999 JQ |
973 | static int calculate_new_instance_id(const char *idstr) |
974 | { | |
975 | SaveStateEntry *se; | |
976 | int instance_id = 0; | |
977 | ||
72cf2d4f | 978 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
8718e999 JQ |
979 | if (strcmp(idstr, se->idstr) == 0 |
980 | && instance_id <= se->instance_id) { | |
981 | instance_id = se->instance_id + 1; | |
982 | } | |
983 | } | |
984 | return instance_id; | |
985 | } | |
986 | ||
a672b469 AL |
987 | /* TODO: Individual devices generally have very little idea about the rest |
988 | of the system, so instance_id should be removed/replaced. | |
989 | Meanwhile pass -1 as instance_id if you do not already have a clearly | |
990 | distinguishing id for all instances of your device class. */ | |
991 | int register_savevm_live(const char *idstr, | |
992 | int instance_id, | |
993 | int version_id, | |
994 | SaveLiveStateHandler *save_live_state, | |
995 | SaveStateHandler *save_state, | |
996 | LoadStateHandler *load_state, | |
997 | void *opaque) | |
998 | { | |
8718e999 | 999 | SaveStateEntry *se; |
a672b469 AL |
1000 | |
1001 | se = qemu_malloc(sizeof(SaveStateEntry)); | |
a672b469 | 1002 | pstrcpy(se->idstr, sizeof(se->idstr), idstr); |
a672b469 AL |
1003 | se->version_id = version_id; |
1004 | se->section_id = global_section_id++; | |
1005 | se->save_live_state = save_live_state; | |
1006 | se->save_state = save_state; | |
1007 | se->load_state = load_state; | |
1008 | se->opaque = opaque; | |
9ed7d6ae | 1009 | se->vmsd = NULL; |
a672b469 | 1010 | |
8718e999 JQ |
1011 | if (instance_id == -1) { |
1012 | se->instance_id = calculate_new_instance_id(idstr); | |
1013 | } else { | |
1014 | se->instance_id = instance_id; | |
a672b469 | 1015 | } |
8718e999 | 1016 | /* add at the end of list */ |
72cf2d4f | 1017 | QTAILQ_INSERT_TAIL(&savevm_handlers, se, entry); |
a672b469 AL |
1018 | return 0; |
1019 | } | |
1020 | ||
1021 | int register_savevm(const char *idstr, | |
1022 | int instance_id, | |
1023 | int version_id, | |
1024 | SaveStateHandler *save_state, | |
1025 | LoadStateHandler *load_state, | |
1026 | void *opaque) | |
1027 | { | |
1028 | return register_savevm_live(idstr, instance_id, version_id, | |
1029 | NULL, save_state, load_state, opaque); | |
1030 | } | |
1031 | ||
41bd13af AL |
1032 | void unregister_savevm(const char *idstr, void *opaque) |
1033 | { | |
8718e999 | 1034 | SaveStateEntry *se, *new_se; |
41bd13af | 1035 | |
72cf2d4f | 1036 | QTAILQ_FOREACH_SAFE(se, &savevm_handlers, entry, new_se) { |
8718e999 | 1037 | if (strcmp(se->idstr, idstr) == 0 && se->opaque == opaque) { |
72cf2d4f | 1038 | QTAILQ_REMOVE(&savevm_handlers, se, entry); |
8718e999 | 1039 | qemu_free(se); |
41bd13af | 1040 | } |
41bd13af AL |
1041 | } |
1042 | } | |
1043 | ||
9ed7d6ae JQ |
1044 | int vmstate_register(int instance_id, const VMStateDescription *vmsd, |
1045 | void *opaque) | |
1046 | { | |
8718e999 | 1047 | SaveStateEntry *se; |
9ed7d6ae JQ |
1048 | |
1049 | se = qemu_malloc(sizeof(SaveStateEntry)); | |
1050 | pstrcpy(se->idstr, sizeof(se->idstr), vmsd->name); | |
9ed7d6ae JQ |
1051 | se->version_id = vmsd->version_id; |
1052 | se->section_id = global_section_id++; | |
1053 | se->save_live_state = NULL; | |
1054 | se->save_state = NULL; | |
1055 | se->load_state = NULL; | |
1056 | se->opaque = opaque; | |
1057 | se->vmsd = vmsd; | |
9ed7d6ae | 1058 | |
8718e999 JQ |
1059 | if (instance_id == -1) { |
1060 | se->instance_id = calculate_new_instance_id(vmsd->name); | |
1061 | } else { | |
1062 | se->instance_id = instance_id; | |
9ed7d6ae | 1063 | } |
8718e999 | 1064 | /* add at the end of list */ |
72cf2d4f | 1065 | QTAILQ_INSERT_TAIL(&savevm_handlers, se, entry); |
9ed7d6ae JQ |
1066 | return 0; |
1067 | } | |
1068 | ||
1eb7538b | 1069 | void vmstate_unregister(const VMStateDescription *vmsd, void *opaque) |
9ed7d6ae | 1070 | { |
1eb7538b JQ |
1071 | SaveStateEntry *se, *new_se; |
1072 | ||
72cf2d4f | 1073 | QTAILQ_FOREACH_SAFE(se, &savevm_handlers, entry, new_se) { |
1eb7538b | 1074 | if (se->vmsd == vmsd && se->opaque == opaque) { |
72cf2d4f | 1075 | QTAILQ_REMOVE(&savevm_handlers, se, entry); |
1eb7538b JQ |
1076 | qemu_free(se); |
1077 | } | |
1078 | } | |
9ed7d6ae JQ |
1079 | } |
1080 | ||
1081 | int vmstate_load_state(QEMUFile *f, const VMStateDescription *vmsd, | |
1082 | void *opaque, int version_id) | |
1083 | { | |
1084 | VMStateField *field = vmsd->fields; | |
1085 | ||
1086 | if (version_id > vmsd->version_id) { | |
1087 | return -EINVAL; | |
1088 | } | |
1089 | if (version_id < vmsd->minimum_version_id_old) { | |
1090 | return -EINVAL; | |
1091 | } | |
1092 | if (version_id < vmsd->minimum_version_id) { | |
1093 | return vmsd->load_state_old(f, opaque, version_id); | |
1094 | } | |
fd4d52de JQ |
1095 | if (vmsd->pre_load) { |
1096 | int ret = vmsd->pre_load(opaque); | |
1097 | if (ret) | |
1098 | return ret; | |
1099 | } | |
9ed7d6ae | 1100 | while(field->name) { |
f11f6a5f JQ |
1101 | if ((field->field_exists && |
1102 | field->field_exists(opaque, version_id)) || | |
1103 | (!field->field_exists && | |
1104 | field->version_id <= version_id)) { | |
f752a6aa JQ |
1105 | void *base_addr = opaque + field->offset; |
1106 | int ret, i, n_elems = 1; | |
9ed7d6ae | 1107 | |
f752a6aa JQ |
1108 | if (field->flags & VMS_ARRAY) { |
1109 | n_elems = field->num; | |
d6698281 JQ |
1110 | } else if (field->flags & VMS_VARRAY_INT32) { |
1111 | n_elems = *(int32_t *)(opaque+field->num_offset); | |
bdb4941d JQ |
1112 | } else if (field->flags & VMS_VARRAY_UINT16) { |
1113 | n_elems = *(uint16_t *)(opaque+field->num_offset); | |
f752a6aa | 1114 | } |
dde0463b | 1115 | if (field->flags & VMS_POINTER) { |
f752a6aa | 1116 | base_addr = *(void **)base_addr; |
dde0463b | 1117 | } |
f752a6aa JQ |
1118 | for (i = 0; i < n_elems; i++) { |
1119 | void *addr = base_addr + field->size * i; | |
ec245e21 | 1120 | |
19df438b JQ |
1121 | if (field->flags & VMS_ARRAY_OF_POINTER) { |
1122 | addr = *(void **)addr; | |
1123 | } | |
ec245e21 | 1124 | if (field->flags & VMS_STRUCT) { |
fa3aad24 | 1125 | ret = vmstate_load_state(f, field->vmsd, addr, field->vmsd->version_id); |
ec245e21 JQ |
1126 | } else { |
1127 | ret = field->info->get(f, addr, field->size); | |
1128 | ||
1129 | } | |
f752a6aa JQ |
1130 | if (ret < 0) { |
1131 | return ret; | |
1132 | } | |
9ed7d6ae JQ |
1133 | } |
1134 | } | |
1135 | field++; | |
1136 | } | |
752ff2fa | 1137 | if (vmsd->post_load) { |
e59fb374 | 1138 | return vmsd->post_load(opaque, version_id); |
752ff2fa | 1139 | } |
9ed7d6ae JQ |
1140 | return 0; |
1141 | } | |
1142 | ||
1143 | void vmstate_save_state(QEMUFile *f, const VMStateDescription *vmsd, | |
84e2e3eb | 1144 | void *opaque) |
9ed7d6ae JQ |
1145 | { |
1146 | VMStateField *field = vmsd->fields; | |
1147 | ||
8fb0791d JQ |
1148 | if (vmsd->pre_save) { |
1149 | vmsd->pre_save(opaque); | |
1150 | } | |
9ed7d6ae | 1151 | while(field->name) { |
f11f6a5f JQ |
1152 | if (!field->field_exists || |
1153 | field->field_exists(opaque, vmsd->version_id)) { | |
1154 | void *base_addr = opaque + field->offset; | |
1155 | int i, n_elems = 1; | |
dde0463b | 1156 | |
f11f6a5f JQ |
1157 | if (field->flags & VMS_ARRAY) { |
1158 | n_elems = field->num; | |
d6698281 JQ |
1159 | } else if (field->flags & VMS_VARRAY_INT32) { |
1160 | n_elems = *(int32_t *)(opaque+field->num_offset); | |
bdb4941d JQ |
1161 | } else if (field->flags & VMS_VARRAY_UINT16) { |
1162 | n_elems = *(uint16_t *)(opaque+field->num_offset); | |
f11f6a5f JQ |
1163 | } |
1164 | if (field->flags & VMS_POINTER) { | |
1165 | base_addr = *(void **)base_addr; | |
1166 | } | |
1167 | for (i = 0; i < n_elems; i++) { | |
1168 | void *addr = base_addr + field->size * i; | |
ec245e21 | 1169 | |
f11f6a5f JQ |
1170 | if (field->flags & VMS_STRUCT) { |
1171 | vmstate_save_state(f, field->vmsd, addr); | |
1172 | } else { | |
1173 | field->info->put(f, addr, field->size); | |
1174 | } | |
ec245e21 | 1175 | } |
dde0463b | 1176 | } |
9ed7d6ae JQ |
1177 | field++; |
1178 | } | |
8fb0791d JQ |
1179 | if (vmsd->post_save) { |
1180 | vmsd->post_save(opaque); | |
1181 | } | |
9ed7d6ae JQ |
1182 | } |
1183 | ||
4082be4d JQ |
1184 | static int vmstate_load(QEMUFile *f, SaveStateEntry *se, int version_id) |
1185 | { | |
9ed7d6ae JQ |
1186 | if (!se->vmsd) { /* Old style */ |
1187 | return se->load_state(f, se->opaque, version_id); | |
1188 | } | |
1189 | return vmstate_load_state(f, se->vmsd, se->opaque, version_id); | |
4082be4d JQ |
1190 | } |
1191 | ||
1192 | static void vmstate_save(QEMUFile *f, SaveStateEntry *se) | |
1193 | { | |
9ed7d6ae JQ |
1194 | if (!se->vmsd) { /* Old style */ |
1195 | se->save_state(f, se->opaque); | |
1196 | return; | |
1197 | } | |
1198 | vmstate_save_state(f,se->vmsd, se->opaque); | |
4082be4d JQ |
1199 | } |
1200 | ||
a672b469 AL |
1201 | #define QEMU_VM_FILE_MAGIC 0x5145564d |
1202 | #define QEMU_VM_FILE_VERSION_COMPAT 0x00000002 | |
1203 | #define QEMU_VM_FILE_VERSION 0x00000003 | |
1204 | ||
1205 | #define QEMU_VM_EOF 0x00 | |
1206 | #define QEMU_VM_SECTION_START 0x01 | |
1207 | #define QEMU_VM_SECTION_PART 0x02 | |
1208 | #define QEMU_VM_SECTION_END 0x03 | |
1209 | #define QEMU_VM_SECTION_FULL 0x04 | |
1210 | ||
1211 | int qemu_savevm_state_begin(QEMUFile *f) | |
1212 | { | |
1213 | SaveStateEntry *se; | |
1214 | ||
1215 | qemu_put_be32(f, QEMU_VM_FILE_MAGIC); | |
1216 | qemu_put_be32(f, QEMU_VM_FILE_VERSION); | |
1217 | ||
72cf2d4f | 1218 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
a672b469 AL |
1219 | int len; |
1220 | ||
1221 | if (se->save_live_state == NULL) | |
1222 | continue; | |
1223 | ||
1224 | /* Section type */ | |
1225 | qemu_put_byte(f, QEMU_VM_SECTION_START); | |
1226 | qemu_put_be32(f, se->section_id); | |
1227 | ||
1228 | /* ID string */ | |
1229 | len = strlen(se->idstr); | |
1230 | qemu_put_byte(f, len); | |
1231 | qemu_put_buffer(f, (uint8_t *)se->idstr, len); | |
1232 | ||
1233 | qemu_put_be32(f, se->instance_id); | |
1234 | qemu_put_be32(f, se->version_id); | |
1235 | ||
1236 | se->save_live_state(f, QEMU_VM_SECTION_START, se->opaque); | |
1237 | } | |
1238 | ||
1239 | if (qemu_file_has_error(f)) | |
1240 | return -EIO; | |
1241 | ||
1242 | return 0; | |
1243 | } | |
1244 | ||
1245 | int qemu_savevm_state_iterate(QEMUFile *f) | |
1246 | { | |
1247 | SaveStateEntry *se; | |
1248 | int ret = 1; | |
1249 | ||
72cf2d4f | 1250 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
a672b469 AL |
1251 | if (se->save_live_state == NULL) |
1252 | continue; | |
1253 | ||
1254 | /* Section type */ | |
1255 | qemu_put_byte(f, QEMU_VM_SECTION_PART); | |
1256 | qemu_put_be32(f, se->section_id); | |
1257 | ||
1258 | ret &= !!se->save_live_state(f, QEMU_VM_SECTION_PART, se->opaque); | |
1259 | } | |
1260 | ||
1261 | if (ret) | |
1262 | return 1; | |
1263 | ||
1264 | if (qemu_file_has_error(f)) | |
1265 | return -EIO; | |
1266 | ||
1267 | return 0; | |
1268 | } | |
1269 | ||
1270 | int qemu_savevm_state_complete(QEMUFile *f) | |
1271 | { | |
1272 | SaveStateEntry *se; | |
1273 | ||
72cf2d4f | 1274 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
a672b469 AL |
1275 | if (se->save_live_state == NULL) |
1276 | continue; | |
1277 | ||
1278 | /* Section type */ | |
1279 | qemu_put_byte(f, QEMU_VM_SECTION_END); | |
1280 | qemu_put_be32(f, se->section_id); | |
1281 | ||
1282 | se->save_live_state(f, QEMU_VM_SECTION_END, se->opaque); | |
1283 | } | |
1284 | ||
72cf2d4f | 1285 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
a672b469 AL |
1286 | int len; |
1287 | ||
9ed7d6ae | 1288 | if (se->save_state == NULL && se->vmsd == NULL) |
a672b469 AL |
1289 | continue; |
1290 | ||
1291 | /* Section type */ | |
1292 | qemu_put_byte(f, QEMU_VM_SECTION_FULL); | |
1293 | qemu_put_be32(f, se->section_id); | |
1294 | ||
1295 | /* ID string */ | |
1296 | len = strlen(se->idstr); | |
1297 | qemu_put_byte(f, len); | |
1298 | qemu_put_buffer(f, (uint8_t *)se->idstr, len); | |
1299 | ||
1300 | qemu_put_be32(f, se->instance_id); | |
1301 | qemu_put_be32(f, se->version_id); | |
1302 | ||
4082be4d | 1303 | vmstate_save(f, se); |
a672b469 AL |
1304 | } |
1305 | ||
1306 | qemu_put_byte(f, QEMU_VM_EOF); | |
1307 | ||
1308 | if (qemu_file_has_error(f)) | |
1309 | return -EIO; | |
1310 | ||
1311 | return 0; | |
1312 | } | |
1313 | ||
1314 | int qemu_savevm_state(QEMUFile *f) | |
1315 | { | |
1316 | int saved_vm_running; | |
1317 | int ret; | |
1318 | ||
1319 | saved_vm_running = vm_running; | |
1320 | vm_stop(0); | |
1321 | ||
1322 | bdrv_flush_all(); | |
1323 | ||
1324 | ret = qemu_savevm_state_begin(f); | |
1325 | if (ret < 0) | |
1326 | goto out; | |
1327 | ||
1328 | do { | |
1329 | ret = qemu_savevm_state_iterate(f); | |
1330 | if (ret < 0) | |
1331 | goto out; | |
1332 | } while (ret == 0); | |
1333 | ||
1334 | ret = qemu_savevm_state_complete(f); | |
1335 | ||
1336 | out: | |
1337 | if (qemu_file_has_error(f)) | |
1338 | ret = -EIO; | |
1339 | ||
1340 | if (!ret && saved_vm_running) | |
1341 | vm_start(); | |
1342 | ||
1343 | return ret; | |
1344 | } | |
1345 | ||
1346 | static SaveStateEntry *find_se(const char *idstr, int instance_id) | |
1347 | { | |
1348 | SaveStateEntry *se; | |
1349 | ||
72cf2d4f | 1350 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
a672b469 AL |
1351 | if (!strcmp(se->idstr, idstr) && |
1352 | instance_id == se->instance_id) | |
1353 | return se; | |
1354 | } | |
1355 | return NULL; | |
1356 | } | |
1357 | ||
1358 | typedef struct LoadStateEntry { | |
72cf2d4f | 1359 | QLIST_ENTRY(LoadStateEntry) entry; |
a672b469 AL |
1360 | SaveStateEntry *se; |
1361 | int section_id; | |
1362 | int version_id; | |
a672b469 AL |
1363 | } LoadStateEntry; |
1364 | ||
a672b469 AL |
1365 | int qemu_loadvm_state(QEMUFile *f) |
1366 | { | |
72cf2d4f BS |
1367 | QLIST_HEAD(, LoadStateEntry) loadvm_handlers = |
1368 | QLIST_HEAD_INITIALIZER(loadvm_handlers); | |
f4dbb8dd | 1369 | LoadStateEntry *le, *new_le; |
a672b469 AL |
1370 | uint8_t section_type; |
1371 | unsigned int v; | |
1372 | int ret; | |
1373 | ||
1374 | v = qemu_get_be32(f); | |
1375 | if (v != QEMU_VM_FILE_MAGIC) | |
1376 | return -EINVAL; | |
1377 | ||
1378 | v = qemu_get_be32(f); | |
bbfe1408 JQ |
1379 | if (v == QEMU_VM_FILE_VERSION_COMPAT) { |
1380 | fprintf(stderr, "SaveVM v2 format is obsolete and don't work anymore\n"); | |
1381 | return -ENOTSUP; | |
1382 | } | |
a672b469 AL |
1383 | if (v != QEMU_VM_FILE_VERSION) |
1384 | return -ENOTSUP; | |
1385 | ||
1386 | while ((section_type = qemu_get_byte(f)) != QEMU_VM_EOF) { | |
1387 | uint32_t instance_id, version_id, section_id; | |
a672b469 AL |
1388 | SaveStateEntry *se; |
1389 | char idstr[257]; | |
1390 | int len; | |
1391 | ||
1392 | switch (section_type) { | |
1393 | case QEMU_VM_SECTION_START: | |
1394 | case QEMU_VM_SECTION_FULL: | |
1395 | /* Read section start */ | |
1396 | section_id = qemu_get_be32(f); | |
1397 | len = qemu_get_byte(f); | |
1398 | qemu_get_buffer(f, (uint8_t *)idstr, len); | |
1399 | idstr[len] = 0; | |
1400 | instance_id = qemu_get_be32(f); | |
1401 | version_id = qemu_get_be32(f); | |
1402 | ||
1403 | /* Find savevm section */ | |
1404 | se = find_se(idstr, instance_id); | |
1405 | if (se == NULL) { | |
1406 | fprintf(stderr, "Unknown savevm section or instance '%s' %d\n", idstr, instance_id); | |
1407 | ret = -EINVAL; | |
1408 | goto out; | |
1409 | } | |
1410 | ||
1411 | /* Validate version */ | |
1412 | if (version_id > se->version_id) { | |
1413 | fprintf(stderr, "savevm: unsupported version %d for '%s' v%d\n", | |
1414 | version_id, idstr, se->version_id); | |
1415 | ret = -EINVAL; | |
1416 | goto out; | |
1417 | } | |
1418 | ||
1419 | /* Add entry */ | |
1420 | le = qemu_mallocz(sizeof(*le)); | |
a672b469 AL |
1421 | |
1422 | le->se = se; | |
1423 | le->section_id = section_id; | |
1424 | le->version_id = version_id; | |
72cf2d4f | 1425 | QLIST_INSERT_HEAD(&loadvm_handlers, le, entry); |
a672b469 | 1426 | |
4082be4d | 1427 | ret = vmstate_load(f, le->se, le->version_id); |
b5a22e4a JQ |
1428 | if (ret < 0) { |
1429 | fprintf(stderr, "qemu: warning: error while loading state for instance 0x%x of device '%s'\n", | |
1430 | instance_id, idstr); | |
1431 | goto out; | |
1432 | } | |
a672b469 AL |
1433 | break; |
1434 | case QEMU_VM_SECTION_PART: | |
1435 | case QEMU_VM_SECTION_END: | |
1436 | section_id = qemu_get_be32(f); | |
1437 | ||
72cf2d4f | 1438 | QLIST_FOREACH(le, &loadvm_handlers, entry) { |
f4dbb8dd JQ |
1439 | if (le->section_id == section_id) { |
1440 | break; | |
1441 | } | |
1442 | } | |
a672b469 AL |
1443 | if (le == NULL) { |
1444 | fprintf(stderr, "Unknown savevm section %d\n", section_id); | |
1445 | ret = -EINVAL; | |
1446 | goto out; | |
1447 | } | |
1448 | ||
4082be4d | 1449 | ret = vmstate_load(f, le->se, le->version_id); |
b5a22e4a JQ |
1450 | if (ret < 0) { |
1451 | fprintf(stderr, "qemu: warning: error while loading state section id %d\n", | |
1452 | section_id); | |
1453 | goto out; | |
1454 | } | |
a672b469 AL |
1455 | break; |
1456 | default: | |
1457 | fprintf(stderr, "Unknown savevm section type %d\n", section_type); | |
1458 | ret = -EINVAL; | |
1459 | goto out; | |
1460 | } | |
1461 | } | |
1462 | ||
1463 | ret = 0; | |
1464 | ||
1465 | out: | |
72cf2d4f BS |
1466 | QLIST_FOREACH_SAFE(le, &loadvm_handlers, entry, new_le) { |
1467 | QLIST_REMOVE(le, entry); | |
a672b469 AL |
1468 | qemu_free(le); |
1469 | } | |
1470 | ||
1471 | if (qemu_file_has_error(f)) | |
1472 | ret = -EIO; | |
1473 | ||
1474 | return ret; | |
1475 | } | |
1476 | ||
1477 | /* device can contain snapshots */ | |
1478 | static int bdrv_can_snapshot(BlockDriverState *bs) | |
1479 | { | |
1480 | return (bs && | |
1481 | !bdrv_is_removable(bs) && | |
1482 | !bdrv_is_read_only(bs)); | |
1483 | } | |
1484 | ||
1485 | /* device must be snapshots in order to have a reliable snapshot */ | |
1486 | static int bdrv_has_snapshot(BlockDriverState *bs) | |
1487 | { | |
1488 | return (bs && | |
1489 | !bdrv_is_removable(bs) && | |
1490 | !bdrv_is_read_only(bs)); | |
1491 | } | |
1492 | ||
1493 | static BlockDriverState *get_bs_snapshots(void) | |
1494 | { | |
1495 | BlockDriverState *bs; | |
751c6a17 | 1496 | DriveInfo *dinfo; |
a672b469 AL |
1497 | |
1498 | if (bs_snapshots) | |
1499 | return bs_snapshots; | |
72cf2d4f | 1500 | QTAILQ_FOREACH(dinfo, &drives, next) { |
751c6a17 | 1501 | bs = dinfo->bdrv; |
a672b469 AL |
1502 | if (bdrv_can_snapshot(bs)) |
1503 | goto ok; | |
1504 | } | |
1505 | return NULL; | |
1506 | ok: | |
1507 | bs_snapshots = bs; | |
1508 | return bs; | |
1509 | } | |
1510 | ||
1511 | static int bdrv_snapshot_find(BlockDriverState *bs, QEMUSnapshotInfo *sn_info, | |
1512 | const char *name) | |
1513 | { | |
1514 | QEMUSnapshotInfo *sn_tab, *sn; | |
1515 | int nb_sns, i, ret; | |
1516 | ||
1517 | ret = -ENOENT; | |
1518 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
1519 | if (nb_sns < 0) | |
1520 | return ret; | |
1521 | for(i = 0; i < nb_sns; i++) { | |
1522 | sn = &sn_tab[i]; | |
1523 | if (!strcmp(sn->id_str, name) || !strcmp(sn->name, name)) { | |
1524 | *sn_info = *sn; | |
1525 | ret = 0; | |
1526 | break; | |
1527 | } | |
1528 | } | |
1529 | qemu_free(sn_tab); | |
1530 | return ret; | |
1531 | } | |
1532 | ||
d54908a5 | 1533 | void do_savevm(Monitor *mon, const QDict *qdict) |
a672b469 | 1534 | { |
751c6a17 | 1535 | DriveInfo *dinfo; |
a672b469 AL |
1536 | BlockDriverState *bs, *bs1; |
1537 | QEMUSnapshotInfo sn1, *sn = &sn1, old_sn1, *old_sn = &old_sn1; | |
751c6a17 | 1538 | int must_delete, ret; |
a672b469 AL |
1539 | QEMUFile *f; |
1540 | int saved_vm_running; | |
2d22b18f | 1541 | uint32_t vm_state_size; |
a672b469 AL |
1542 | #ifdef _WIN32 |
1543 | struct _timeb tb; | |
1544 | #else | |
1545 | struct timeval tv; | |
1546 | #endif | |
d54908a5 | 1547 | const char *name = qdict_get_try_str(qdict, "name"); |
a672b469 AL |
1548 | |
1549 | bs = get_bs_snapshots(); | |
1550 | if (!bs) { | |
376253ec | 1551 | monitor_printf(mon, "No block device can accept snapshots\n"); |
a672b469 AL |
1552 | return; |
1553 | } | |
1554 | ||
1555 | /* ??? Should this occur after vm_stop? */ | |
1556 | qemu_aio_flush(); | |
1557 | ||
1558 | saved_vm_running = vm_running; | |
1559 | vm_stop(0); | |
1560 | ||
1561 | must_delete = 0; | |
1562 | if (name) { | |
1563 | ret = bdrv_snapshot_find(bs, old_sn, name); | |
1564 | if (ret >= 0) { | |
1565 | must_delete = 1; | |
1566 | } | |
1567 | } | |
1568 | memset(sn, 0, sizeof(*sn)); | |
1569 | if (must_delete) { | |
1570 | pstrcpy(sn->name, sizeof(sn->name), old_sn->name); | |
1571 | pstrcpy(sn->id_str, sizeof(sn->id_str), old_sn->id_str); | |
1572 | } else { | |
1573 | if (name) | |
1574 | pstrcpy(sn->name, sizeof(sn->name), name); | |
1575 | } | |
1576 | ||
1577 | /* fill auxiliary fields */ | |
1578 | #ifdef _WIN32 | |
1579 | _ftime(&tb); | |
1580 | sn->date_sec = tb.time; | |
1581 | sn->date_nsec = tb.millitm * 1000000; | |
1582 | #else | |
1583 | gettimeofday(&tv, NULL); | |
1584 | sn->date_sec = tv.tv_sec; | |
1585 | sn->date_nsec = tv.tv_usec * 1000; | |
1586 | #endif | |
1587 | sn->vm_clock_nsec = qemu_get_clock(vm_clock); | |
1588 | ||
a672b469 | 1589 | /* save the VM state */ |
45566e9c | 1590 | f = qemu_fopen_bdrv(bs, 1); |
a672b469 | 1591 | if (!f) { |
376253ec | 1592 | monitor_printf(mon, "Could not open VM state file\n"); |
a672b469 AL |
1593 | goto the_end; |
1594 | } | |
1595 | ret = qemu_savevm_state(f); | |
2d22b18f | 1596 | vm_state_size = qemu_ftell(f); |
a672b469 AL |
1597 | qemu_fclose(f); |
1598 | if (ret < 0) { | |
376253ec | 1599 | monitor_printf(mon, "Error %d while writing VM\n", ret); |
a672b469 AL |
1600 | goto the_end; |
1601 | } | |
1602 | ||
1603 | /* create the snapshots */ | |
1604 | ||
72cf2d4f | 1605 | QTAILQ_FOREACH(dinfo, &drives, next) { |
751c6a17 | 1606 | bs1 = dinfo->bdrv; |
a672b469 AL |
1607 | if (bdrv_has_snapshot(bs1)) { |
1608 | if (must_delete) { | |
1609 | ret = bdrv_snapshot_delete(bs1, old_sn->id_str); | |
1610 | if (ret < 0) { | |
376253ec AL |
1611 | monitor_printf(mon, |
1612 | "Error while deleting snapshot on '%s'\n", | |
1613 | bdrv_get_device_name(bs1)); | |
a672b469 AL |
1614 | } |
1615 | } | |
2d22b18f AL |
1616 | /* Write VM state size only to the image that contains the state */ |
1617 | sn->vm_state_size = (bs == bs1 ? vm_state_size : 0); | |
a672b469 AL |
1618 | ret = bdrv_snapshot_create(bs1, sn); |
1619 | if (ret < 0) { | |
376253ec AL |
1620 | monitor_printf(mon, "Error while creating snapshot on '%s'\n", |
1621 | bdrv_get_device_name(bs1)); | |
a672b469 AL |
1622 | } |
1623 | } | |
1624 | } | |
1625 | ||
1626 | the_end: | |
1627 | if (saved_vm_running) | |
1628 | vm_start(); | |
1629 | } | |
1630 | ||
05f2401e | 1631 | int load_vmstate(Monitor *mon, const char *name) |
a672b469 | 1632 | { |
751c6a17 | 1633 | DriveInfo *dinfo; |
a672b469 | 1634 | BlockDriverState *bs, *bs1; |
2d22b18f | 1635 | QEMUSnapshotInfo sn; |
a672b469 | 1636 | QEMUFile *f; |
751c6a17 | 1637 | int ret; |
a672b469 AL |
1638 | |
1639 | bs = get_bs_snapshots(); | |
1640 | if (!bs) { | |
376253ec | 1641 | monitor_printf(mon, "No block device supports snapshots\n"); |
05f2401e | 1642 | return -EINVAL; |
a672b469 AL |
1643 | } |
1644 | ||
1645 | /* Flush all IO requests so they don't interfere with the new state. */ | |
1646 | qemu_aio_flush(); | |
1647 | ||
72cf2d4f | 1648 | QTAILQ_FOREACH(dinfo, &drives, next) { |
751c6a17 | 1649 | bs1 = dinfo->bdrv; |
a672b469 AL |
1650 | if (bdrv_has_snapshot(bs1)) { |
1651 | ret = bdrv_snapshot_goto(bs1, name); | |
1652 | if (ret < 0) { | |
1653 | if (bs != bs1) | |
376253ec | 1654 | monitor_printf(mon, "Warning: "); |
a672b469 AL |
1655 | switch(ret) { |
1656 | case -ENOTSUP: | |
376253ec AL |
1657 | monitor_printf(mon, |
1658 | "Snapshots not supported on device '%s'\n", | |
1659 | bdrv_get_device_name(bs1)); | |
a672b469 AL |
1660 | break; |
1661 | case -ENOENT: | |
376253ec AL |
1662 | monitor_printf(mon, "Could not find snapshot '%s' on " |
1663 | "device '%s'\n", | |
1664 | name, bdrv_get_device_name(bs1)); | |
a672b469 AL |
1665 | break; |
1666 | default: | |
376253ec AL |
1667 | monitor_printf(mon, "Error %d while activating snapshot on" |
1668 | " '%s'\n", ret, bdrv_get_device_name(bs1)); | |
a672b469 AL |
1669 | break; |
1670 | } | |
1671 | /* fatal on snapshot block device */ | |
1672 | if (bs == bs1) | |
05f2401e | 1673 | return 0; |
a672b469 AL |
1674 | } |
1675 | } | |
1676 | } | |
1677 | ||
2d22b18f AL |
1678 | /* Don't even try to load empty VM states */ |
1679 | ret = bdrv_snapshot_find(bs, &sn, name); | |
1680 | if ((ret >= 0) && (sn.vm_state_size == 0)) | |
05f2401e | 1681 | return -EINVAL; |
2d22b18f | 1682 | |
a672b469 | 1683 | /* restore the VM state */ |
45566e9c | 1684 | f = qemu_fopen_bdrv(bs, 0); |
a672b469 | 1685 | if (!f) { |
376253ec | 1686 | monitor_printf(mon, "Could not open VM state file\n"); |
05f2401e | 1687 | return -EINVAL; |
a672b469 AL |
1688 | } |
1689 | ret = qemu_loadvm_state(f); | |
1690 | qemu_fclose(f); | |
1691 | if (ret < 0) { | |
376253ec | 1692 | monitor_printf(mon, "Error %d while loading VM state\n", ret); |
05f2401e | 1693 | return ret; |
a672b469 | 1694 | } |
05f2401e | 1695 | return 0; |
7b630349 JQ |
1696 | } |
1697 | ||
d54908a5 | 1698 | void do_delvm(Monitor *mon, const QDict *qdict) |
a672b469 | 1699 | { |
751c6a17 | 1700 | DriveInfo *dinfo; |
a672b469 | 1701 | BlockDriverState *bs, *bs1; |
751c6a17 | 1702 | int ret; |
d54908a5 | 1703 | const char *name = qdict_get_str(qdict, "name"); |
a672b469 AL |
1704 | |
1705 | bs = get_bs_snapshots(); | |
1706 | if (!bs) { | |
376253ec | 1707 | monitor_printf(mon, "No block device supports snapshots\n"); |
a672b469 AL |
1708 | return; |
1709 | } | |
1710 | ||
72cf2d4f | 1711 | QTAILQ_FOREACH(dinfo, &drives, next) { |
751c6a17 | 1712 | bs1 = dinfo->bdrv; |
a672b469 AL |
1713 | if (bdrv_has_snapshot(bs1)) { |
1714 | ret = bdrv_snapshot_delete(bs1, name); | |
1715 | if (ret < 0) { | |
1716 | if (ret == -ENOTSUP) | |
376253ec AL |
1717 | monitor_printf(mon, |
1718 | "Snapshots not supported on device '%s'\n", | |
1719 | bdrv_get_device_name(bs1)); | |
a672b469 | 1720 | else |
376253ec AL |
1721 | monitor_printf(mon, "Error %d while deleting snapshot on " |
1722 | "'%s'\n", ret, bdrv_get_device_name(bs1)); | |
a672b469 AL |
1723 | } |
1724 | } | |
1725 | } | |
1726 | } | |
1727 | ||
376253ec | 1728 | void do_info_snapshots(Monitor *mon) |
a672b469 | 1729 | { |
751c6a17 | 1730 | DriveInfo *dinfo; |
a672b469 AL |
1731 | BlockDriverState *bs, *bs1; |
1732 | QEMUSnapshotInfo *sn_tab, *sn; | |
1733 | int nb_sns, i; | |
1734 | char buf[256]; | |
1735 | ||
1736 | bs = get_bs_snapshots(); | |
1737 | if (!bs) { | |
376253ec | 1738 | monitor_printf(mon, "No available block device supports snapshots\n"); |
a672b469 AL |
1739 | return; |
1740 | } | |
376253ec | 1741 | monitor_printf(mon, "Snapshot devices:"); |
72cf2d4f | 1742 | QTAILQ_FOREACH(dinfo, &drives, next) { |
751c6a17 | 1743 | bs1 = dinfo->bdrv; |
a672b469 AL |
1744 | if (bdrv_has_snapshot(bs1)) { |
1745 | if (bs == bs1) | |
376253ec | 1746 | monitor_printf(mon, " %s", bdrv_get_device_name(bs1)); |
a672b469 AL |
1747 | } |
1748 | } | |
376253ec | 1749 | monitor_printf(mon, "\n"); |
a672b469 AL |
1750 | |
1751 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
1752 | if (nb_sns < 0) { | |
376253ec | 1753 | monitor_printf(mon, "bdrv_snapshot_list: error %d\n", nb_sns); |
a672b469 AL |
1754 | return; |
1755 | } | |
376253ec AL |
1756 | monitor_printf(mon, "Snapshot list (from %s):\n", |
1757 | bdrv_get_device_name(bs)); | |
1758 | monitor_printf(mon, "%s\n", bdrv_snapshot_dump(buf, sizeof(buf), NULL)); | |
a672b469 AL |
1759 | for(i = 0; i < nb_sns; i++) { |
1760 | sn = &sn_tab[i]; | |
376253ec | 1761 | monitor_printf(mon, "%s\n", bdrv_snapshot_dump(buf, sizeof(buf), sn)); |
a672b469 AL |
1762 | } |
1763 | qemu_free(sn_tab); | |
1764 | } |