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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> | |
a672b469 AL |
26 | #include <time.h> |
27 | #include <errno.h> | |
28 | #include <sys/time.h> | |
29 | #include <zlib.h> | |
30 | ||
71e72a19 | 31 | /* Needed early for CONFIG_BSD etc. */ |
d40cdb10 BS |
32 | #include "config-host.h" |
33 | ||
a672b469 AL |
34 | #ifndef _WIN32 |
35 | #include <sys/times.h> | |
36 | #include <sys/wait.h> | |
37 | #include <termios.h> | |
38 | #include <sys/mman.h> | |
39 | #include <sys/ioctl.h> | |
40 | #include <sys/resource.h> | |
41 | #include <sys/socket.h> | |
42 | #include <netinet/in.h> | |
43 | #include <net/if.h> | |
a672b469 AL |
44 | #include <arpa/inet.h> |
45 | #include <dirent.h> | |
46 | #include <netdb.h> | |
47 | #include <sys/select.h> | |
71e72a19 | 48 | #ifdef CONFIG_BSD |
a672b469 | 49 | #include <sys/stat.h> |
a167ba50 | 50 | #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__) |
a672b469 AL |
51 | #include <libutil.h> |
52 | #else | |
53 | #include <util.h> | |
54 | #endif | |
a672b469 AL |
55 | #ifdef __linux__ |
56 | #include <pty.h> | |
57 | #include <malloc.h> | |
58 | #include <linux/rtc.h> | |
59 | #endif | |
60 | #endif | |
61 | #endif | |
62 | ||
63 | #ifdef _WIN32 | |
49dc768d | 64 | #include <windows.h> |
a672b469 AL |
65 | #include <malloc.h> |
66 | #include <sys/timeb.h> | |
67 | #include <mmsystem.h> | |
68 | #define getopt_long_only getopt_long | |
69 | #define memalign(align, size) malloc(size) | |
70 | #endif | |
71 | ||
511d2b14 BS |
72 | #include "qemu-common.h" |
73 | #include "hw/hw.h" | |
7685ee6a | 74 | #include "hw/qdev.h" |
511d2b14 BS |
75 | #include "net.h" |
76 | #include "monitor.h" | |
77 | #include "sysemu.h" | |
78 | #include "qemu-timer.h" | |
79 | #include "qemu-char.h" | |
511d2b14 BS |
80 | #include "audio/audio.h" |
81 | #include "migration.h" | |
82 | #include "qemu_socket.h" | |
72cf2d4f | 83 | #include "qemu-queue.h" |
2ff68d07 | 84 | #include "qemu-timer.h" |
17a4663e | 85 | #include "cpus.h" |
511d2b14 | 86 | |
a672b469 | 87 | #define SELF_ANNOUNCE_ROUNDS 5 |
a672b469 | 88 | |
18995b98 | 89 | #ifndef ETH_P_RARP |
f8778a77 | 90 | #define ETH_P_RARP 0x8035 |
18995b98 N |
91 | #endif |
92 | #define ARP_HTYPE_ETH 0x0001 | |
93 | #define ARP_PTYPE_IP 0x0800 | |
94 | #define ARP_OP_REQUEST_REV 0x3 | |
95 | ||
96 | static int announce_self_create(uint8_t *buf, | |
a672b469 AL |
97 | uint8_t *mac_addr) |
98 | { | |
18995b98 N |
99 | /* Ethernet header. */ |
100 | memset(buf, 0xff, 6); /* destination MAC addr */ | |
101 | memcpy(buf + 6, mac_addr, 6); /* source MAC addr */ | |
102 | *(uint16_t *)(buf + 12) = htons(ETH_P_RARP); /* ethertype */ | |
103 | ||
104 | /* RARP header. */ | |
105 | *(uint16_t *)(buf + 14) = htons(ARP_HTYPE_ETH); /* hardware addr space */ | |
106 | *(uint16_t *)(buf + 16) = htons(ARP_PTYPE_IP); /* protocol addr space */ | |
107 | *(buf + 18) = 6; /* hardware addr length (ethernet) */ | |
108 | *(buf + 19) = 4; /* protocol addr length (IPv4) */ | |
109 | *(uint16_t *)(buf + 20) = htons(ARP_OP_REQUEST_REV); /* opcode */ | |
110 | memcpy(buf + 22, mac_addr, 6); /* source hw addr */ | |
111 | memset(buf + 28, 0x00, 4); /* source protocol addr */ | |
112 | memcpy(buf + 32, mac_addr, 6); /* target hw addr */ | |
113 | memset(buf + 38, 0x00, 4); /* target protocol addr */ | |
114 | ||
115 | /* Padding to get up to 60 bytes (ethernet min packet size, minus FCS). */ | |
116 | memset(buf + 42, 0x00, 18); | |
117 | ||
118 | return 60; /* len (FCS will be added by hardware) */ | |
a672b469 AL |
119 | } |
120 | ||
f401ca22 | 121 | static void qemu_announce_self_iter(NICState *nic, void *opaque) |
a672b469 | 122 | { |
18995b98 | 123 | uint8_t buf[60]; |
f401ca22 MM |
124 | int len; |
125 | ||
126 | len = announce_self_create(buf, nic->conf->macaddr.a); | |
127 | ||
128 | qemu_send_packet_raw(&nic->nc, buf, len); | |
129 | } | |
130 | ||
131 | ||
132 | static void qemu_announce_self_once(void *opaque) | |
133 | { | |
ed8b330b GN |
134 | static int count = SELF_ANNOUNCE_ROUNDS; |
135 | QEMUTimer *timer = *(QEMUTimer **)opaque; | |
a672b469 | 136 | |
f401ca22 MM |
137 | qemu_foreach_nic(qemu_announce_self_iter, NULL); |
138 | ||
18995b98 N |
139 | if (--count) { |
140 | /* delay 50ms, 150ms, 250ms, ... */ | |
7bd427d8 | 141 | qemu_mod_timer(timer, qemu_get_clock_ms(rt_clock) + |
18995b98 | 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; | |
7bd427d8 | 152 | timer = qemu_new_timer_ms(rt_clock, qemu_announce_self_once, &timer); |
ed8b330b | 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; |
c163b5ca | 167 | QEMUFileGetRateLimit *get_rate_limit; |
a672b469 AL |
168 | void *opaque; |
169 | int is_write; | |
170 | ||
171 | int64_t buf_offset; /* start of buffer when writing, end of buffer | |
172 | when reading */ | |
173 | int buf_index; | |
174 | int buf_size; /* 0 when writing */ | |
175 | uint8_t buf[IO_BUF_SIZE]; | |
176 | ||
3961b4dd | 177 | int last_error; |
a672b469 AL |
178 | }; |
179 | ||
7f79dd28 | 180 | typedef struct QEMUFileStdio |
a672b469 | 181 | { |
7f79dd28 | 182 | FILE *stdio_file; |
a672b469 | 183 | QEMUFile *file; |
7f79dd28 | 184 | } QEMUFileStdio; |
a672b469 AL |
185 | |
186 | typedef struct QEMUFileSocket | |
187 | { | |
188 | int fd; | |
189 | QEMUFile *file; | |
190 | } QEMUFileSocket; | |
191 | ||
192 | static int socket_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) | |
193 | { | |
194 | QEMUFileSocket *s = opaque; | |
195 | ssize_t len; | |
196 | ||
197 | do { | |
00aa0040 | 198 | len = qemu_recv(s->fd, buf, size, 0); |
a672b469 AL |
199 | } while (len == -1 && socket_error() == EINTR); |
200 | ||
201 | if (len == -1) | |
202 | len = -socket_error(); | |
203 | ||
204 | return len; | |
205 | } | |
206 | ||
207 | static int socket_close(void *opaque) | |
208 | { | |
209 | QEMUFileSocket *s = opaque; | |
7267c094 | 210 | g_free(s); |
a672b469 AL |
211 | return 0; |
212 | } | |
213 | ||
7f79dd28 | 214 | static int stdio_put_buffer(void *opaque, const uint8_t *buf, int64_t pos, int size) |
a672b469 | 215 | { |
7f79dd28 PB |
216 | QEMUFileStdio *s = opaque; |
217 | return fwrite(buf, 1, size, s->stdio_file); | |
a672b469 AL |
218 | } |
219 | ||
7f79dd28 | 220 | static int stdio_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) |
a672b469 | 221 | { |
7f79dd28 PB |
222 | QEMUFileStdio *s = opaque; |
223 | FILE *fp = s->stdio_file; | |
8a67ec4d UL |
224 | int bytes; |
225 | ||
226 | do { | |
227 | clearerr(fp); | |
228 | bytes = fread(buf, 1, size, fp); | |
229 | } while ((bytes == 0) && ferror(fp) && (errno == EINTR)); | |
230 | return bytes; | |
a672b469 AL |
231 | } |
232 | ||
7f79dd28 PB |
233 | static int stdio_pclose(void *opaque) |
234 | { | |
235 | QEMUFileStdio *s = opaque; | |
41ef56e6 AL |
236 | int ret; |
237 | ret = pclose(s->stdio_file); | |
7267c094 | 238 | g_free(s); |
41ef56e6 | 239 | return ret; |
7f79dd28 PB |
240 | } |
241 | ||
242 | static int stdio_fclose(void *opaque) | |
a672b469 | 243 | { |
7f79dd28 PB |
244 | QEMUFileStdio *s = opaque; |
245 | fclose(s->stdio_file); | |
7267c094 | 246 | g_free(s); |
a672b469 AL |
247 | return 0; |
248 | } | |
249 | ||
7f79dd28 | 250 | QEMUFile *qemu_popen(FILE *stdio_file, const char *mode) |
a672b469 | 251 | { |
7f79dd28 | 252 | QEMUFileStdio *s; |
a672b469 | 253 | |
7f79dd28 | 254 | if (stdio_file == NULL || mode == NULL || (mode[0] != 'r' && mode[0] != 'w') || mode[1] != 0) { |
a672b469 AL |
255 | fprintf(stderr, "qemu_popen: Argument validity check failed\n"); |
256 | return NULL; | |
257 | } | |
258 | ||
7267c094 | 259 | s = g_malloc0(sizeof(QEMUFileStdio)); |
a672b469 | 260 | |
7f79dd28 | 261 | s->stdio_file = stdio_file; |
a672b469 AL |
262 | |
263 | if(mode[0] == 'r') { | |
c163b5ca | 264 | s->file = qemu_fopen_ops(s, NULL, stdio_get_buffer, stdio_pclose, |
265 | NULL, NULL, NULL); | |
a672b469 | 266 | } else { |
c163b5ca | 267 | s->file = qemu_fopen_ops(s, stdio_put_buffer, NULL, stdio_pclose, |
268 | NULL, NULL, NULL); | |
a672b469 | 269 | } |
a672b469 AL |
270 | return s->file; |
271 | } | |
272 | ||
273 | QEMUFile *qemu_popen_cmd(const char *command, const char *mode) | |
274 | { | |
275 | FILE *popen_file; | |
276 | ||
277 | popen_file = popen(command, mode); | |
278 | if(popen_file == NULL) { | |
279 | return NULL; | |
280 | } | |
281 | ||
282 | return qemu_popen(popen_file, mode); | |
283 | } | |
284 | ||
7f79dd28 | 285 | int qemu_stdio_fd(QEMUFile *f) |
8a43b1ea | 286 | { |
7f79dd28 | 287 | QEMUFileStdio *p; |
8a43b1ea CL |
288 | int fd; |
289 | ||
7f79dd28 PB |
290 | p = (QEMUFileStdio *)f->opaque; |
291 | fd = fileno(p->stdio_file); | |
8a43b1ea CL |
292 | |
293 | return fd; | |
294 | } | |
295 | ||
5ac1fad3 PB |
296 | QEMUFile *qemu_fdopen(int fd, const char *mode) |
297 | { | |
298 | QEMUFileStdio *s; | |
299 | ||
300 | if (mode == NULL || | |
301 | (mode[0] != 'r' && mode[0] != 'w') || | |
302 | mode[1] != 'b' || mode[2] != 0) { | |
303 | fprintf(stderr, "qemu_fdopen: Argument validity check failed\n"); | |
304 | return NULL; | |
305 | } | |
306 | ||
7267c094 | 307 | s = g_malloc0(sizeof(QEMUFileStdio)); |
5ac1fad3 PB |
308 | s->stdio_file = fdopen(fd, mode); |
309 | if (!s->stdio_file) | |
310 | goto fail; | |
311 | ||
312 | if(mode[0] == 'r') { | |
c163b5ca | 313 | s->file = qemu_fopen_ops(s, NULL, stdio_get_buffer, stdio_fclose, |
314 | NULL, NULL, NULL); | |
5ac1fad3 | 315 | } else { |
c163b5ca | 316 | s->file = qemu_fopen_ops(s, stdio_put_buffer, NULL, stdio_fclose, |
317 | NULL, NULL, NULL); | |
5ac1fad3 PB |
318 | } |
319 | return s->file; | |
320 | ||
321 | fail: | |
7267c094 | 322 | g_free(s); |
5ac1fad3 PB |
323 | return NULL; |
324 | } | |
325 | ||
a672b469 AL |
326 | QEMUFile *qemu_fopen_socket(int fd) |
327 | { | |
7267c094 | 328 | QEMUFileSocket *s = g_malloc0(sizeof(QEMUFileSocket)); |
a672b469 | 329 | |
a672b469 | 330 | s->fd = fd; |
c163b5ca | 331 | s->file = qemu_fopen_ops(s, NULL, socket_get_buffer, socket_close, |
332 | NULL, NULL, NULL); | |
a672b469 AL |
333 | return s->file; |
334 | } | |
335 | ||
a672b469 AL |
336 | static int file_put_buffer(void *opaque, const uint8_t *buf, |
337 | int64_t pos, int size) | |
338 | { | |
339 | QEMUFileStdio *s = opaque; | |
7f79dd28 | 340 | fseek(s->stdio_file, pos, SEEK_SET); |
5fdb3aa1 | 341 | return fwrite(buf, 1, size, s->stdio_file); |
a672b469 AL |
342 | } |
343 | ||
344 | static int file_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) | |
345 | { | |
346 | QEMUFileStdio *s = opaque; | |
7f79dd28 PB |
347 | fseek(s->stdio_file, pos, SEEK_SET); |
348 | return fread(buf, 1, size, s->stdio_file); | |
a672b469 AL |
349 | } |
350 | ||
351 | QEMUFile *qemu_fopen(const char *filename, const char *mode) | |
352 | { | |
353 | QEMUFileStdio *s; | |
354 | ||
7f79dd28 PB |
355 | if (mode == NULL || |
356 | (mode[0] != 'r' && mode[0] != 'w') || | |
357 | mode[1] != 'b' || mode[2] != 0) { | |
090414a3 | 358 | fprintf(stderr, "qemu_fopen: Argument validity check failed\n"); |
7f79dd28 PB |
359 | return NULL; |
360 | } | |
361 | ||
7267c094 | 362 | s = g_malloc0(sizeof(QEMUFileStdio)); |
a672b469 | 363 | |
7f79dd28 PB |
364 | s->stdio_file = fopen(filename, mode); |
365 | if (!s->stdio_file) | |
a672b469 | 366 | goto fail; |
c163b5ca | 367 | |
7f79dd28 | 368 | if(mode[0] == 'w') { |
c163b5ca | 369 | s->file = qemu_fopen_ops(s, file_put_buffer, NULL, stdio_fclose, |
370 | NULL, NULL, NULL); | |
7f79dd28 | 371 | } else { |
c163b5ca | 372 | s->file = qemu_fopen_ops(s, NULL, file_get_buffer, stdio_fclose, |
373 | NULL, NULL, NULL); | |
7f79dd28 PB |
374 | } |
375 | return s->file; | |
a672b469 | 376 | fail: |
7267c094 | 377 | g_free(s); |
a672b469 AL |
378 | return NULL; |
379 | } | |
380 | ||
178e08a5 | 381 | static int block_put_buffer(void *opaque, const uint8_t *buf, |
a672b469 AL |
382 | int64_t pos, int size) |
383 | { | |
45566e9c | 384 | bdrv_save_vmstate(opaque, buf, pos, size); |
a672b469 AL |
385 | return size; |
386 | } | |
387 | ||
178e08a5 | 388 | static int block_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) |
a672b469 | 389 | { |
45566e9c | 390 | return bdrv_load_vmstate(opaque, buf, pos, size); |
a672b469 AL |
391 | } |
392 | ||
393 | static int bdrv_fclose(void *opaque) | |
394 | { | |
a672b469 AL |
395 | return 0; |
396 | } | |
397 | ||
45566e9c | 398 | static QEMUFile *qemu_fopen_bdrv(BlockDriverState *bs, int is_writable) |
a672b469 | 399 | { |
a672b469 | 400 | if (is_writable) |
c163b5ca | 401 | return qemu_fopen_ops(bs, block_put_buffer, NULL, bdrv_fclose, |
402 | NULL, NULL, NULL); | |
403 | return qemu_fopen_ops(bs, NULL, block_get_buffer, bdrv_fclose, NULL, NULL, NULL); | |
a672b469 AL |
404 | } |
405 | ||
406 | QEMUFile *qemu_fopen_ops(void *opaque, QEMUFilePutBufferFunc *put_buffer, | |
407 | QEMUFileGetBufferFunc *get_buffer, | |
408 | QEMUFileCloseFunc *close, | |
19629537 | 409 | QEMUFileRateLimit *rate_limit, |
c163b5ca | 410 | QEMUFileSetRateLimit *set_rate_limit, |
411 | QEMUFileGetRateLimit *get_rate_limit) | |
a672b469 AL |
412 | { |
413 | QEMUFile *f; | |
414 | ||
7267c094 | 415 | f = g_malloc0(sizeof(QEMUFile)); |
a672b469 AL |
416 | |
417 | f->opaque = opaque; | |
418 | f->put_buffer = put_buffer; | |
419 | f->get_buffer = get_buffer; | |
420 | f->close = close; | |
421 | f->rate_limit = rate_limit; | |
19629537 | 422 | f->set_rate_limit = set_rate_limit; |
c163b5ca | 423 | f->get_rate_limit = get_rate_limit; |
a672b469 AL |
424 | f->is_write = 0; |
425 | ||
426 | return f; | |
427 | } | |
428 | ||
624b9cc2 | 429 | int qemu_file_get_error(QEMUFile *f) |
a672b469 | 430 | { |
3961b4dd | 431 | return f->last_error; |
a672b469 AL |
432 | } |
433 | ||
dcd1d224 | 434 | void qemu_file_set_error(QEMUFile *f, int ret) |
4dabe248 | 435 | { |
3961b4dd | 436 | f->last_error = ret; |
4dabe248 AL |
437 | } |
438 | ||
a672b469 AL |
439 | void qemu_fflush(QEMUFile *f) |
440 | { | |
441 | if (!f->put_buffer) | |
442 | return; | |
443 | ||
444 | if (f->is_write && f->buf_index > 0) { | |
445 | int len; | |
446 | ||
447 | len = f->put_buffer(f->opaque, f->buf, f->buf_offset, f->buf_index); | |
448 | if (len > 0) | |
449 | f->buf_offset += f->buf_index; | |
450 | else | |
3961b4dd | 451 | f->last_error = -EINVAL; |
a672b469 AL |
452 | f->buf_index = 0; |
453 | } | |
454 | } | |
455 | ||
456 | static void qemu_fill_buffer(QEMUFile *f) | |
457 | { | |
458 | int len; | |
0046c45b | 459 | int pending; |
a672b469 AL |
460 | |
461 | if (!f->get_buffer) | |
462 | return; | |
463 | ||
464 | if (f->is_write) | |
465 | abort(); | |
466 | ||
0046c45b JQ |
467 | pending = f->buf_size - f->buf_index; |
468 | if (pending > 0) { | |
469 | memmove(f->buf, f->buf + f->buf_index, pending); | |
470 | } | |
471 | f->buf_index = 0; | |
472 | f->buf_size = pending; | |
473 | ||
474 | len = f->get_buffer(f->opaque, f->buf + pending, f->buf_offset, | |
475 | IO_BUF_SIZE - pending); | |
a672b469 | 476 | if (len > 0) { |
0046c45b | 477 | f->buf_size += len; |
a672b469 | 478 | f->buf_offset += len; |
fa39a30f JQ |
479 | } else if (len == 0) { |
480 | f->last_error = -EIO; | |
a672b469 | 481 | } else if (len != -EAGAIN) |
3961b4dd | 482 | f->last_error = len; |
a672b469 AL |
483 | } |
484 | ||
485 | int qemu_fclose(QEMUFile *f) | |
486 | { | |
487 | int ret = 0; | |
488 | qemu_fflush(f); | |
489 | if (f->close) | |
490 | ret = f->close(f->opaque); | |
7267c094 | 491 | g_free(f); |
a672b469 AL |
492 | return ret; |
493 | } | |
494 | ||
495 | void qemu_file_put_notify(QEMUFile *f) | |
496 | { | |
497 | f->put_buffer(f->opaque, NULL, 0, 0); | |
498 | } | |
499 | ||
500 | void qemu_put_buffer(QEMUFile *f, const uint8_t *buf, int size) | |
501 | { | |
502 | int l; | |
503 | ||
3961b4dd | 504 | if (!f->last_error && f->is_write == 0 && f->buf_index > 0) { |
a672b469 AL |
505 | fprintf(stderr, |
506 | "Attempted to write to buffer while read buffer is not empty\n"); | |
507 | abort(); | |
508 | } | |
509 | ||
3961b4dd | 510 | while (!f->last_error && size > 0) { |
a672b469 AL |
511 | l = IO_BUF_SIZE - f->buf_index; |
512 | if (l > size) | |
513 | l = size; | |
514 | memcpy(f->buf + f->buf_index, buf, l); | |
515 | f->is_write = 1; | |
516 | f->buf_index += l; | |
517 | buf += l; | |
518 | size -= l; | |
519 | if (f->buf_index >= IO_BUF_SIZE) | |
520 | qemu_fflush(f); | |
521 | } | |
522 | } | |
523 | ||
524 | void qemu_put_byte(QEMUFile *f, int v) | |
525 | { | |
3961b4dd | 526 | if (!f->last_error && f->is_write == 0 && f->buf_index > 0) { |
a672b469 AL |
527 | fprintf(stderr, |
528 | "Attempted to write to buffer while read buffer is not empty\n"); | |
529 | abort(); | |
530 | } | |
531 | ||
532 | f->buf[f->buf_index++] = v; | |
533 | f->is_write = 1; | |
534 | if (f->buf_index >= IO_BUF_SIZE) | |
535 | qemu_fflush(f); | |
536 | } | |
537 | ||
c6380724 | 538 | static void qemu_file_skip(QEMUFile *f, int size) |
a672b469 | 539 | { |
c6380724 JQ |
540 | if (f->buf_index + size <= f->buf_size) { |
541 | f->buf_index += size; | |
542 | } | |
543 | } | |
544 | ||
545 | static int qemu_peek_buffer(QEMUFile *f, uint8_t *buf, int size, size_t offset) | |
a672b469 | 546 | { |
c6380724 JQ |
547 | int pending; |
548 | int index; | |
a672b469 | 549 | |
b9ce1454 | 550 | if (f->is_write) { |
a672b469 | 551 | abort(); |
b9ce1454 | 552 | } |
a672b469 | 553 | |
c6380724 JQ |
554 | index = f->buf_index + offset; |
555 | pending = f->buf_size - index; | |
556 | if (pending < size) { | |
557 | qemu_fill_buffer(f); | |
558 | index = f->buf_index + offset; | |
559 | pending = f->buf_size - index; | |
560 | } | |
561 | ||
562 | if (pending <= 0) { | |
563 | return 0; | |
564 | } | |
565 | if (size > pending) { | |
566 | size = pending; | |
567 | } | |
568 | ||
569 | memcpy(buf, f->buf + index, size); | |
570 | return size; | |
571 | } | |
572 | ||
573 | int qemu_get_buffer(QEMUFile *f, uint8_t *buf, int size) | |
574 | { | |
575 | int pending = size; | |
576 | int done = 0; | |
577 | ||
578 | while (pending > 0) { | |
579 | int res; | |
580 | ||
581 | res = qemu_peek_buffer(f, buf, pending, 0); | |
582 | if (res == 0) { | |
583 | return done; | |
a672b469 | 584 | } |
c6380724 JQ |
585 | qemu_file_skip(f, res); |
586 | buf += res; | |
587 | pending -= res; | |
588 | done += res; | |
a672b469 | 589 | } |
c6380724 | 590 | return done; |
a672b469 AL |
591 | } |
592 | ||
c6380724 | 593 | static int qemu_peek_byte(QEMUFile *f, int offset) |
811814bd | 594 | { |
c6380724 JQ |
595 | int index = f->buf_index + offset; |
596 | ||
b9ce1454 | 597 | if (f->is_write) { |
811814bd | 598 | abort(); |
b9ce1454 | 599 | } |
811814bd | 600 | |
c6380724 | 601 | if (index >= f->buf_size) { |
811814bd | 602 | qemu_fill_buffer(f); |
c6380724 JQ |
603 | index = f->buf_index + offset; |
604 | if (index >= f->buf_size) { | |
811814bd | 605 | return 0; |
b9ce1454 | 606 | } |
811814bd | 607 | } |
c6380724 | 608 | return f->buf[index]; |
811814bd JQ |
609 | } |
610 | ||
a672b469 AL |
611 | int qemu_get_byte(QEMUFile *f) |
612 | { | |
65f3bb3d | 613 | int result; |
a672b469 | 614 | |
c6380724 JQ |
615 | result = qemu_peek_byte(f, 0); |
616 | qemu_file_skip(f, 1); | |
65f3bb3d | 617 | return result; |
a672b469 AL |
618 | } |
619 | ||
620 | int64_t qemu_ftell(QEMUFile *f) | |
621 | { | |
622 | return f->buf_offset - f->buf_size + f->buf_index; | |
623 | } | |
624 | ||
625 | int64_t qemu_fseek(QEMUFile *f, int64_t pos, int whence) | |
626 | { | |
627 | if (whence == SEEK_SET) { | |
628 | /* nothing to do */ | |
629 | } else if (whence == SEEK_CUR) { | |
630 | pos += qemu_ftell(f); | |
631 | } else { | |
632 | /* SEEK_END not supported */ | |
633 | return -1; | |
634 | } | |
635 | if (f->put_buffer) { | |
636 | qemu_fflush(f); | |
637 | f->buf_offset = pos; | |
638 | } else { | |
639 | f->buf_offset = pos; | |
640 | f->buf_index = 0; | |
641 | f->buf_size = 0; | |
642 | } | |
643 | return pos; | |
644 | } | |
645 | ||
646 | int qemu_file_rate_limit(QEMUFile *f) | |
647 | { | |
648 | if (f->rate_limit) | |
649 | return f->rate_limit(f->opaque); | |
650 | ||
651 | return 0; | |
652 | } | |
653 | ||
3d002df3 | 654 | int64_t qemu_file_get_rate_limit(QEMUFile *f) |
c163b5ca | 655 | { |
656 | if (f->get_rate_limit) | |
657 | return f->get_rate_limit(f->opaque); | |
658 | ||
659 | return 0; | |
660 | } | |
661 | ||
3d002df3 | 662 | int64_t qemu_file_set_rate_limit(QEMUFile *f, int64_t new_rate) |
19629537 | 663 | { |
0bb05eaf GC |
664 | /* any failed or completed migration keeps its state to allow probing of |
665 | * migration data, but has no associated file anymore */ | |
666 | if (f && f->set_rate_limit) | |
19629537 GC |
667 | return f->set_rate_limit(f->opaque, new_rate); |
668 | ||
669 | return 0; | |
670 | } | |
671 | ||
a672b469 AL |
672 | void qemu_put_be16(QEMUFile *f, unsigned int v) |
673 | { | |
674 | qemu_put_byte(f, v >> 8); | |
675 | qemu_put_byte(f, v); | |
676 | } | |
677 | ||
678 | void qemu_put_be32(QEMUFile *f, unsigned int v) | |
679 | { | |
680 | qemu_put_byte(f, v >> 24); | |
681 | qemu_put_byte(f, v >> 16); | |
682 | qemu_put_byte(f, v >> 8); | |
683 | qemu_put_byte(f, v); | |
684 | } | |
685 | ||
686 | void qemu_put_be64(QEMUFile *f, uint64_t v) | |
687 | { | |
688 | qemu_put_be32(f, v >> 32); | |
689 | qemu_put_be32(f, v); | |
690 | } | |
691 | ||
692 | unsigned int qemu_get_be16(QEMUFile *f) | |
693 | { | |
694 | unsigned int v; | |
695 | v = qemu_get_byte(f) << 8; | |
696 | v |= qemu_get_byte(f); | |
697 | return v; | |
698 | } | |
699 | ||
700 | unsigned int qemu_get_be32(QEMUFile *f) | |
701 | { | |
702 | unsigned int v; | |
703 | v = qemu_get_byte(f) << 24; | |
704 | v |= qemu_get_byte(f) << 16; | |
705 | v |= qemu_get_byte(f) << 8; | |
706 | v |= qemu_get_byte(f); | |
707 | return v; | |
708 | } | |
709 | ||
710 | uint64_t qemu_get_be64(QEMUFile *f) | |
711 | { | |
712 | uint64_t v; | |
713 | v = (uint64_t)qemu_get_be32(f) << 32; | |
714 | v |= qemu_get_be32(f); | |
715 | return v; | |
716 | } | |
717 | ||
2ff68d07 PB |
718 | |
719 | /* timer */ | |
720 | ||
721 | void qemu_put_timer(QEMUFile *f, QEMUTimer *ts) | |
722 | { | |
723 | uint64_t expire_time; | |
724 | ||
725 | expire_time = qemu_timer_expire_time_ns(ts); | |
726 | qemu_put_be64(f, expire_time); | |
727 | } | |
728 | ||
729 | void qemu_get_timer(QEMUFile *f, QEMUTimer *ts) | |
730 | { | |
731 | uint64_t expire_time; | |
732 | ||
733 | expire_time = qemu_get_be64(f); | |
734 | if (expire_time != -1) { | |
735 | qemu_mod_timer_ns(ts, expire_time); | |
736 | } else { | |
737 | qemu_del_timer(ts); | |
738 | } | |
739 | } | |
740 | ||
741 | ||
cdae5cfb GH |
742 | /* bool */ |
743 | ||
744 | static int get_bool(QEMUFile *f, void *pv, size_t size) | |
745 | { | |
746 | bool *v = pv; | |
747 | *v = qemu_get_byte(f); | |
748 | return 0; | |
749 | } | |
750 | ||
751 | static void put_bool(QEMUFile *f, void *pv, size_t size) | |
752 | { | |
753 | bool *v = pv; | |
754 | qemu_put_byte(f, *v); | |
755 | } | |
756 | ||
757 | const VMStateInfo vmstate_info_bool = { | |
758 | .name = "bool", | |
759 | .get = get_bool, | |
760 | .put = put_bool, | |
761 | }; | |
762 | ||
9ed7d6ae JQ |
763 | /* 8 bit int */ |
764 | ||
765 | static int get_int8(QEMUFile *f, void *pv, size_t size) | |
766 | { | |
767 | int8_t *v = pv; | |
768 | qemu_get_s8s(f, v); | |
769 | return 0; | |
770 | } | |
771 | ||
84e2e3eb | 772 | static void put_int8(QEMUFile *f, void *pv, size_t size) |
9ed7d6ae | 773 | { |
84e2e3eb | 774 | int8_t *v = pv; |
9ed7d6ae JQ |
775 | qemu_put_s8s(f, v); |
776 | } | |
777 | ||
778 | const VMStateInfo vmstate_info_int8 = { | |
779 | .name = "int8", | |
780 | .get = get_int8, | |
781 | .put = put_int8, | |
782 | }; | |
783 | ||
784 | /* 16 bit int */ | |
785 | ||
786 | static int get_int16(QEMUFile *f, void *pv, size_t size) | |
787 | { | |
788 | int16_t *v = pv; | |
789 | qemu_get_sbe16s(f, v); | |
790 | return 0; | |
791 | } | |
792 | ||
84e2e3eb | 793 | static void put_int16(QEMUFile *f, void *pv, size_t size) |
9ed7d6ae | 794 | { |
84e2e3eb | 795 | int16_t *v = pv; |
9ed7d6ae JQ |
796 | qemu_put_sbe16s(f, v); |
797 | } | |
798 | ||
799 | const VMStateInfo vmstate_info_int16 = { | |
800 | .name = "int16", | |
801 | .get = get_int16, | |
802 | .put = put_int16, | |
803 | }; | |
804 | ||
805 | /* 32 bit int */ | |
806 | ||
807 | static int get_int32(QEMUFile *f, void *pv, size_t size) | |
808 | { | |
809 | int32_t *v = pv; | |
810 | qemu_get_sbe32s(f, v); | |
811 | return 0; | |
812 | } | |
813 | ||
84e2e3eb | 814 | static void put_int32(QEMUFile *f, void *pv, size_t size) |
9ed7d6ae | 815 | { |
84e2e3eb | 816 | int32_t *v = pv; |
9ed7d6ae JQ |
817 | qemu_put_sbe32s(f, v); |
818 | } | |
819 | ||
820 | const VMStateInfo vmstate_info_int32 = { | |
821 | .name = "int32", | |
822 | .get = get_int32, | |
823 | .put = put_int32, | |
824 | }; | |
825 | ||
82501660 JQ |
826 | /* 32 bit int. See that the received value is the same than the one |
827 | in the field */ | |
828 | ||
829 | static int get_int32_equal(QEMUFile *f, void *pv, size_t size) | |
830 | { | |
831 | int32_t *v = pv; | |
832 | int32_t v2; | |
833 | qemu_get_sbe32s(f, &v2); | |
834 | ||
835 | if (*v == v2) | |
836 | return 0; | |
837 | return -EINVAL; | |
838 | } | |
839 | ||
840 | const VMStateInfo vmstate_info_int32_equal = { | |
841 | .name = "int32 equal", | |
842 | .get = get_int32_equal, | |
843 | .put = put_int32, | |
844 | }; | |
845 | ||
0a031e0a JQ |
846 | /* 32 bit int. See that the received value is the less or the same |
847 | than the one in the field */ | |
848 | ||
849 | static int get_int32_le(QEMUFile *f, void *pv, size_t size) | |
850 | { | |
851 | int32_t *old = pv; | |
852 | int32_t new; | |
853 | qemu_get_sbe32s(f, &new); | |
854 | ||
855 | if (*old <= new) | |
856 | return 0; | |
857 | return -EINVAL; | |
858 | } | |
859 | ||
860 | const VMStateInfo vmstate_info_int32_le = { | |
861 | .name = "int32 equal", | |
862 | .get = get_int32_le, | |
863 | .put = put_int32, | |
864 | }; | |
865 | ||
9ed7d6ae JQ |
866 | /* 64 bit int */ |
867 | ||
868 | static int get_int64(QEMUFile *f, void *pv, size_t size) | |
869 | { | |
870 | int64_t *v = pv; | |
871 | qemu_get_sbe64s(f, v); | |
872 | return 0; | |
873 | } | |
874 | ||
84e2e3eb | 875 | static void put_int64(QEMUFile *f, void *pv, size_t size) |
9ed7d6ae | 876 | { |
84e2e3eb | 877 | int64_t *v = pv; |
9ed7d6ae JQ |
878 | qemu_put_sbe64s(f, v); |
879 | } | |
880 | ||
881 | const VMStateInfo vmstate_info_int64 = { | |
882 | .name = "int64", | |
883 | .get = get_int64, | |
884 | .put = put_int64, | |
885 | }; | |
886 | ||
887 | /* 8 bit unsigned int */ | |
888 | ||
889 | static int get_uint8(QEMUFile *f, void *pv, size_t size) | |
890 | { | |
891 | uint8_t *v = pv; | |
892 | qemu_get_8s(f, v); | |
893 | return 0; | |
894 | } | |
895 | ||
84e2e3eb | 896 | static void put_uint8(QEMUFile *f, void *pv, size_t size) |
9ed7d6ae | 897 | { |
84e2e3eb | 898 | uint8_t *v = pv; |
9ed7d6ae JQ |
899 | qemu_put_8s(f, v); |
900 | } | |
901 | ||
902 | const VMStateInfo vmstate_info_uint8 = { | |
903 | .name = "uint8", | |
904 | .get = get_uint8, | |
905 | .put = put_uint8, | |
906 | }; | |
907 | ||
908 | /* 16 bit unsigned int */ | |
909 | ||
910 | static int get_uint16(QEMUFile *f, void *pv, size_t size) | |
911 | { | |
912 | uint16_t *v = pv; | |
913 | qemu_get_be16s(f, v); | |
914 | return 0; | |
915 | } | |
916 | ||
84e2e3eb | 917 | static void put_uint16(QEMUFile *f, void *pv, size_t size) |
9ed7d6ae | 918 | { |
84e2e3eb | 919 | uint16_t *v = pv; |
9ed7d6ae JQ |
920 | qemu_put_be16s(f, v); |
921 | } | |
922 | ||
923 | const VMStateInfo vmstate_info_uint16 = { | |
924 | .name = "uint16", | |
925 | .get = get_uint16, | |
926 | .put = put_uint16, | |
927 | }; | |
928 | ||
929 | /* 32 bit unsigned int */ | |
930 | ||
931 | static int get_uint32(QEMUFile *f, void *pv, size_t size) | |
932 | { | |
933 | uint32_t *v = pv; | |
934 | qemu_get_be32s(f, v); | |
935 | return 0; | |
936 | } | |
937 | ||
84e2e3eb | 938 | static void put_uint32(QEMUFile *f, void *pv, size_t size) |
9ed7d6ae | 939 | { |
84e2e3eb | 940 | uint32_t *v = pv; |
9ed7d6ae JQ |
941 | qemu_put_be32s(f, v); |
942 | } | |
943 | ||
944 | const VMStateInfo vmstate_info_uint32 = { | |
945 | .name = "uint32", | |
946 | .get = get_uint32, | |
947 | .put = put_uint32, | |
948 | }; | |
949 | ||
9122a8fe JQ |
950 | /* 32 bit uint. See that the received value is the same than the one |
951 | in the field */ | |
952 | ||
953 | static int get_uint32_equal(QEMUFile *f, void *pv, size_t size) | |
954 | { | |
955 | uint32_t *v = pv; | |
956 | uint32_t v2; | |
957 | qemu_get_be32s(f, &v2); | |
958 | ||
959 | if (*v == v2) { | |
960 | return 0; | |
961 | } | |
962 | return -EINVAL; | |
963 | } | |
964 | ||
965 | const VMStateInfo vmstate_info_uint32_equal = { | |
966 | .name = "uint32 equal", | |
967 | .get = get_uint32_equal, | |
968 | .put = put_uint32, | |
969 | }; | |
970 | ||
9ed7d6ae JQ |
971 | /* 64 bit unsigned int */ |
972 | ||
973 | static int get_uint64(QEMUFile *f, void *pv, size_t size) | |
974 | { | |
975 | uint64_t *v = pv; | |
976 | qemu_get_be64s(f, v); | |
977 | return 0; | |
978 | } | |
979 | ||
84e2e3eb | 980 | static void put_uint64(QEMUFile *f, void *pv, size_t size) |
9ed7d6ae | 981 | { |
84e2e3eb | 982 | uint64_t *v = pv; |
9ed7d6ae JQ |
983 | qemu_put_be64s(f, v); |
984 | } | |
985 | ||
986 | const VMStateInfo vmstate_info_uint64 = { | |
987 | .name = "uint64", | |
988 | .get = get_uint64, | |
989 | .put = put_uint64, | |
990 | }; | |
991 | ||
80cd83e7 JQ |
992 | /* 8 bit int. See that the received value is the same than the one |
993 | in the field */ | |
994 | ||
995 | static int get_uint8_equal(QEMUFile *f, void *pv, size_t size) | |
996 | { | |
997 | uint8_t *v = pv; | |
998 | uint8_t v2; | |
999 | qemu_get_8s(f, &v2); | |
1000 | ||
1001 | if (*v == v2) | |
1002 | return 0; | |
1003 | return -EINVAL; | |
1004 | } | |
1005 | ||
1006 | const VMStateInfo vmstate_info_uint8_equal = { | |
aa1cce69 | 1007 | .name = "uint8 equal", |
80cd83e7 JQ |
1008 | .get = get_uint8_equal, |
1009 | .put = put_uint8, | |
1010 | }; | |
1011 | ||
dc3b83a0 JQ |
1012 | /* 16 bit unsigned int int. See that the received value is the same than the one |
1013 | in the field */ | |
1014 | ||
1015 | static int get_uint16_equal(QEMUFile *f, void *pv, size_t size) | |
1016 | { | |
1017 | uint16_t *v = pv; | |
1018 | uint16_t v2; | |
1019 | qemu_get_be16s(f, &v2); | |
1020 | ||
1021 | if (*v == v2) | |
1022 | return 0; | |
1023 | return -EINVAL; | |
1024 | } | |
1025 | ||
1026 | const VMStateInfo vmstate_info_uint16_equal = { | |
1027 | .name = "uint16 equal", | |
1028 | .get = get_uint16_equal, | |
1029 | .put = put_uint16, | |
1030 | }; | |
1031 | ||
dde0463b JQ |
1032 | /* timers */ |
1033 | ||
1034 | static int get_timer(QEMUFile *f, void *pv, size_t size) | |
1035 | { | |
1036 | QEMUTimer *v = pv; | |
1037 | qemu_get_timer(f, v); | |
1038 | return 0; | |
1039 | } | |
1040 | ||
84e2e3eb | 1041 | static void put_timer(QEMUFile *f, void *pv, size_t size) |
dde0463b | 1042 | { |
84e2e3eb | 1043 | QEMUTimer *v = pv; |
dde0463b JQ |
1044 | qemu_put_timer(f, v); |
1045 | } | |
1046 | ||
1047 | const VMStateInfo vmstate_info_timer = { | |
1048 | .name = "timer", | |
1049 | .get = get_timer, | |
1050 | .put = put_timer, | |
1051 | }; | |
1052 | ||
6f67c50f JQ |
1053 | /* uint8_t buffers */ |
1054 | ||
1055 | static int get_buffer(QEMUFile *f, void *pv, size_t size) | |
1056 | { | |
1057 | uint8_t *v = pv; | |
1058 | qemu_get_buffer(f, v, size); | |
1059 | return 0; | |
1060 | } | |
1061 | ||
84e2e3eb | 1062 | static void put_buffer(QEMUFile *f, void *pv, size_t size) |
6f67c50f | 1063 | { |
84e2e3eb | 1064 | uint8_t *v = pv; |
6f67c50f JQ |
1065 | qemu_put_buffer(f, v, size); |
1066 | } | |
1067 | ||
1068 | const VMStateInfo vmstate_info_buffer = { | |
1069 | .name = "buffer", | |
1070 | .get = get_buffer, | |
1071 | .put = put_buffer, | |
1072 | }; | |
1073 | ||
76507c75 | 1074 | /* unused buffers: space that was used for some fields that are |
61cc8701 | 1075 | not useful anymore */ |
76507c75 JQ |
1076 | |
1077 | static int get_unused_buffer(QEMUFile *f, void *pv, size_t size) | |
1078 | { | |
21174c34 JK |
1079 | uint8_t buf[1024]; |
1080 | int block_len; | |
1081 | ||
1082 | while (size > 0) { | |
1083 | block_len = MIN(sizeof(buf), size); | |
1084 | size -= block_len; | |
1085 | qemu_get_buffer(f, buf, block_len); | |
1086 | } | |
1087 | return 0; | |
76507c75 JQ |
1088 | } |
1089 | ||
1090 | static void put_unused_buffer(QEMUFile *f, void *pv, size_t size) | |
1091 | { | |
21174c34 JK |
1092 | static const uint8_t buf[1024]; |
1093 | int block_len; | |
1094 | ||
1095 | while (size > 0) { | |
1096 | block_len = MIN(sizeof(buf), size); | |
1097 | size -= block_len; | |
1098 | qemu_put_buffer(f, buf, block_len); | |
1099 | } | |
76507c75 JQ |
1100 | } |
1101 | ||
1102 | const VMStateInfo vmstate_info_unused_buffer = { | |
1103 | .name = "unused_buffer", | |
1104 | .get = get_unused_buffer, | |
1105 | .put = put_unused_buffer, | |
1106 | }; | |
1107 | ||
7685ee6a AW |
1108 | typedef struct CompatEntry { |
1109 | char idstr[256]; | |
1110 | int instance_id; | |
1111 | } CompatEntry; | |
1112 | ||
a672b469 | 1113 | typedef struct SaveStateEntry { |
72cf2d4f | 1114 | QTAILQ_ENTRY(SaveStateEntry) entry; |
a672b469 AL |
1115 | char idstr[256]; |
1116 | int instance_id; | |
4d2ffa08 | 1117 | int alias_id; |
a672b469 AL |
1118 | int version_id; |
1119 | int section_id; | |
c163b5ca | 1120 | SaveSetParamsHandler *set_params; |
a672b469 AL |
1121 | SaveLiveStateHandler *save_live_state; |
1122 | SaveStateHandler *save_state; | |
1123 | LoadStateHandler *load_state; | |
9ed7d6ae | 1124 | const VMStateDescription *vmsd; |
a672b469 | 1125 | void *opaque; |
7685ee6a | 1126 | CompatEntry *compat; |
24312968 | 1127 | int no_migrate; |
a672b469 AL |
1128 | } SaveStateEntry; |
1129 | ||
c163b5ca | 1130 | |
72cf2d4f BS |
1131 | static QTAILQ_HEAD(savevm_handlers, SaveStateEntry) savevm_handlers = |
1132 | QTAILQ_HEAD_INITIALIZER(savevm_handlers); | |
9ed7d6ae | 1133 | static int global_section_id; |
a672b469 | 1134 | |
8718e999 JQ |
1135 | static int calculate_new_instance_id(const char *idstr) |
1136 | { | |
1137 | SaveStateEntry *se; | |
1138 | int instance_id = 0; | |
1139 | ||
72cf2d4f | 1140 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
8718e999 JQ |
1141 | if (strcmp(idstr, se->idstr) == 0 |
1142 | && instance_id <= se->instance_id) { | |
1143 | instance_id = se->instance_id + 1; | |
1144 | } | |
1145 | } | |
1146 | return instance_id; | |
1147 | } | |
1148 | ||
7685ee6a AW |
1149 | static int calculate_compat_instance_id(const char *idstr) |
1150 | { | |
1151 | SaveStateEntry *se; | |
1152 | int instance_id = 0; | |
1153 | ||
1154 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { | |
1155 | if (!se->compat) | |
1156 | continue; | |
1157 | ||
1158 | if (strcmp(idstr, se->compat->idstr) == 0 | |
1159 | && instance_id <= se->compat->instance_id) { | |
1160 | instance_id = se->compat->instance_id + 1; | |
1161 | } | |
1162 | } | |
1163 | return instance_id; | |
1164 | } | |
1165 | ||
a672b469 AL |
1166 | /* TODO: Individual devices generally have very little idea about the rest |
1167 | of the system, so instance_id should be removed/replaced. | |
1168 | Meanwhile pass -1 as instance_id if you do not already have a clearly | |
1169 | distinguishing id for all instances of your device class. */ | |
0be71e32 AW |
1170 | int register_savevm_live(DeviceState *dev, |
1171 | const char *idstr, | |
a672b469 AL |
1172 | int instance_id, |
1173 | int version_id, | |
c163b5ca | 1174 | SaveSetParamsHandler *set_params, |
a672b469 AL |
1175 | SaveLiveStateHandler *save_live_state, |
1176 | SaveStateHandler *save_state, | |
1177 | LoadStateHandler *load_state, | |
1178 | void *opaque) | |
1179 | { | |
8718e999 | 1180 | SaveStateEntry *se; |
a672b469 | 1181 | |
7267c094 | 1182 | se = g_malloc0(sizeof(SaveStateEntry)); |
a672b469 AL |
1183 | se->version_id = version_id; |
1184 | se->section_id = global_section_id++; | |
c163b5ca | 1185 | se->set_params = set_params; |
a672b469 AL |
1186 | se->save_live_state = save_live_state; |
1187 | se->save_state = save_state; | |
1188 | se->load_state = load_state; | |
1189 | se->opaque = opaque; | |
9ed7d6ae | 1190 | se->vmsd = NULL; |
24312968 | 1191 | se->no_migrate = 0; |
a672b469 | 1192 | |
7685ee6a AW |
1193 | if (dev && dev->parent_bus && dev->parent_bus->info->get_dev_path) { |
1194 | char *id = dev->parent_bus->info->get_dev_path(dev); | |
1195 | if (id) { | |
1196 | pstrcpy(se->idstr, sizeof(se->idstr), id); | |
1197 | pstrcat(se->idstr, sizeof(se->idstr), "/"); | |
7267c094 | 1198 | g_free(id); |
7685ee6a | 1199 | |
7267c094 | 1200 | se->compat = g_malloc0(sizeof(CompatEntry)); |
7685ee6a AW |
1201 | pstrcpy(se->compat->idstr, sizeof(se->compat->idstr), idstr); |
1202 | se->compat->instance_id = instance_id == -1 ? | |
1203 | calculate_compat_instance_id(idstr) : instance_id; | |
1204 | instance_id = -1; | |
1205 | } | |
1206 | } | |
1207 | pstrcat(se->idstr, sizeof(se->idstr), idstr); | |
1208 | ||
8718e999 | 1209 | if (instance_id == -1) { |
7685ee6a | 1210 | se->instance_id = calculate_new_instance_id(se->idstr); |
8718e999 JQ |
1211 | } else { |
1212 | se->instance_id = instance_id; | |
a672b469 | 1213 | } |
7685ee6a | 1214 | assert(!se->compat || se->instance_id == 0); |
8718e999 | 1215 | /* add at the end of list */ |
72cf2d4f | 1216 | QTAILQ_INSERT_TAIL(&savevm_handlers, se, entry); |
a672b469 AL |
1217 | return 0; |
1218 | } | |
1219 | ||
0be71e32 AW |
1220 | int register_savevm(DeviceState *dev, |
1221 | const char *idstr, | |
a672b469 AL |
1222 | int instance_id, |
1223 | int version_id, | |
1224 | SaveStateHandler *save_state, | |
1225 | LoadStateHandler *load_state, | |
1226 | void *opaque) | |
1227 | { | |
0be71e32 | 1228 | return register_savevm_live(dev, idstr, instance_id, version_id, |
c163b5ca | 1229 | NULL, NULL, save_state, load_state, opaque); |
a672b469 AL |
1230 | } |
1231 | ||
0be71e32 | 1232 | void unregister_savevm(DeviceState *dev, const char *idstr, void *opaque) |
41bd13af | 1233 | { |
8718e999 | 1234 | SaveStateEntry *se, *new_se; |
7685ee6a AW |
1235 | char id[256] = ""; |
1236 | ||
1237 | if (dev && dev->parent_bus && dev->parent_bus->info->get_dev_path) { | |
1238 | char *path = dev->parent_bus->info->get_dev_path(dev); | |
1239 | if (path) { | |
1240 | pstrcpy(id, sizeof(id), path); | |
1241 | pstrcat(id, sizeof(id), "/"); | |
7267c094 | 1242 | g_free(path); |
7685ee6a AW |
1243 | } |
1244 | } | |
1245 | pstrcat(id, sizeof(id), idstr); | |
41bd13af | 1246 | |
72cf2d4f | 1247 | QTAILQ_FOREACH_SAFE(se, &savevm_handlers, entry, new_se) { |
7685ee6a | 1248 | if (strcmp(se->idstr, id) == 0 && se->opaque == opaque) { |
72cf2d4f | 1249 | QTAILQ_REMOVE(&savevm_handlers, se, entry); |
69e58af9 | 1250 | if (se->compat) { |
7267c094 | 1251 | g_free(se->compat); |
69e58af9 | 1252 | } |
7267c094 | 1253 | g_free(se); |
41bd13af | 1254 | } |
41bd13af AL |
1255 | } |
1256 | } | |
1257 | ||
0be71e32 | 1258 | int vmstate_register_with_alias_id(DeviceState *dev, int instance_id, |
4d2ffa08 JK |
1259 | const VMStateDescription *vmsd, |
1260 | void *opaque, int alias_id, | |
1261 | int required_for_version) | |
9ed7d6ae | 1262 | { |
8718e999 | 1263 | SaveStateEntry *se; |
9ed7d6ae | 1264 | |
4d2ffa08 JK |
1265 | /* If this triggers, alias support can be dropped for the vmsd. */ |
1266 | assert(alias_id == -1 || required_for_version >= vmsd->minimum_version_id); | |
1267 | ||
7267c094 | 1268 | se = g_malloc0(sizeof(SaveStateEntry)); |
9ed7d6ae JQ |
1269 | se->version_id = vmsd->version_id; |
1270 | se->section_id = global_section_id++; | |
1271 | se->save_live_state = NULL; | |
1272 | se->save_state = NULL; | |
1273 | se->load_state = NULL; | |
1274 | se->opaque = opaque; | |
1275 | se->vmsd = vmsd; | |
4d2ffa08 | 1276 | se->alias_id = alias_id; |
2837c8ea | 1277 | se->no_migrate = vmsd->unmigratable; |
9ed7d6ae | 1278 | |
7685ee6a AW |
1279 | if (dev && dev->parent_bus && dev->parent_bus->info->get_dev_path) { |
1280 | char *id = dev->parent_bus->info->get_dev_path(dev); | |
1281 | if (id) { | |
1282 | pstrcpy(se->idstr, sizeof(se->idstr), id); | |
1283 | pstrcat(se->idstr, sizeof(se->idstr), "/"); | |
7267c094 | 1284 | g_free(id); |
7685ee6a | 1285 | |
7267c094 | 1286 | se->compat = g_malloc0(sizeof(CompatEntry)); |
7685ee6a AW |
1287 | pstrcpy(se->compat->idstr, sizeof(se->compat->idstr), vmsd->name); |
1288 | se->compat->instance_id = instance_id == -1 ? | |
1289 | calculate_compat_instance_id(vmsd->name) : instance_id; | |
1290 | instance_id = -1; | |
1291 | } | |
1292 | } | |
1293 | pstrcat(se->idstr, sizeof(se->idstr), vmsd->name); | |
1294 | ||
8718e999 | 1295 | if (instance_id == -1) { |
7685ee6a | 1296 | se->instance_id = calculate_new_instance_id(se->idstr); |
8718e999 JQ |
1297 | } else { |
1298 | se->instance_id = instance_id; | |
9ed7d6ae | 1299 | } |
7685ee6a | 1300 | assert(!se->compat || se->instance_id == 0); |
8718e999 | 1301 | /* add at the end of list */ |
72cf2d4f | 1302 | QTAILQ_INSERT_TAIL(&savevm_handlers, se, entry); |
9ed7d6ae JQ |
1303 | return 0; |
1304 | } | |
1305 | ||
0be71e32 AW |
1306 | int vmstate_register(DeviceState *dev, int instance_id, |
1307 | const VMStateDescription *vmsd, void *opaque) | |
4d2ffa08 | 1308 | { |
0be71e32 AW |
1309 | return vmstate_register_with_alias_id(dev, instance_id, vmsd, |
1310 | opaque, -1, 0); | |
4d2ffa08 JK |
1311 | } |
1312 | ||
0be71e32 AW |
1313 | void vmstate_unregister(DeviceState *dev, const VMStateDescription *vmsd, |
1314 | void *opaque) | |
9ed7d6ae | 1315 | { |
1eb7538b JQ |
1316 | SaveStateEntry *se, *new_se; |
1317 | ||
72cf2d4f | 1318 | QTAILQ_FOREACH_SAFE(se, &savevm_handlers, entry, new_se) { |
1eb7538b | 1319 | if (se->vmsd == vmsd && se->opaque == opaque) { |
72cf2d4f | 1320 | QTAILQ_REMOVE(&savevm_handlers, se, entry); |
69e58af9 | 1321 | if (se->compat) { |
7267c094 | 1322 | g_free(se->compat); |
69e58af9 | 1323 | } |
7267c094 | 1324 | g_free(se); |
1eb7538b JQ |
1325 | } |
1326 | } | |
9ed7d6ae JQ |
1327 | } |
1328 | ||
811814bd JQ |
1329 | static void vmstate_subsection_save(QEMUFile *f, const VMStateDescription *vmsd, |
1330 | void *opaque); | |
1331 | static int vmstate_subsection_load(QEMUFile *f, const VMStateDescription *vmsd, | |
1332 | void *opaque); | |
1333 | ||
9ed7d6ae JQ |
1334 | int vmstate_load_state(QEMUFile *f, const VMStateDescription *vmsd, |
1335 | void *opaque, int version_id) | |
1336 | { | |
1337 | VMStateField *field = vmsd->fields; | |
811814bd | 1338 | int ret; |
9ed7d6ae JQ |
1339 | |
1340 | if (version_id > vmsd->version_id) { | |
1341 | return -EINVAL; | |
1342 | } | |
1343 | if (version_id < vmsd->minimum_version_id_old) { | |
1344 | return -EINVAL; | |
1345 | } | |
1346 | if (version_id < vmsd->minimum_version_id) { | |
1347 | return vmsd->load_state_old(f, opaque, version_id); | |
1348 | } | |
fd4d52de JQ |
1349 | if (vmsd->pre_load) { |
1350 | int ret = vmsd->pre_load(opaque); | |
1351 | if (ret) | |
1352 | return ret; | |
1353 | } | |
9ed7d6ae | 1354 | while(field->name) { |
f11f6a5f JQ |
1355 | if ((field->field_exists && |
1356 | field->field_exists(opaque, version_id)) || | |
1357 | (!field->field_exists && | |
1358 | field->version_id <= version_id)) { | |
f752a6aa | 1359 | void *base_addr = opaque + field->offset; |
811814bd | 1360 | int i, n_elems = 1; |
e61a1e0a | 1361 | int size = field->size; |
9ed7d6ae | 1362 | |
e61a1e0a JQ |
1363 | if (field->flags & VMS_VBUFFER) { |
1364 | size = *(int32_t *)(opaque+field->size_offset); | |
33599e2a JQ |
1365 | if (field->flags & VMS_MULTIPLY) { |
1366 | size *= field->size; | |
1367 | } | |
e61a1e0a | 1368 | } |
f752a6aa JQ |
1369 | if (field->flags & VMS_ARRAY) { |
1370 | n_elems = field->num; | |
d6698281 JQ |
1371 | } else if (field->flags & VMS_VARRAY_INT32) { |
1372 | n_elems = *(int32_t *)(opaque+field->num_offset); | |
a624b086 JQ |
1373 | } else if (field->flags & VMS_VARRAY_UINT32) { |
1374 | n_elems = *(uint32_t *)(opaque+field->num_offset); | |
bdb4941d JQ |
1375 | } else if (field->flags & VMS_VARRAY_UINT16) { |
1376 | n_elems = *(uint16_t *)(opaque+field->num_offset); | |
82fa39b7 JQ |
1377 | } else if (field->flags & VMS_VARRAY_UINT8) { |
1378 | n_elems = *(uint8_t *)(opaque+field->num_offset); | |
f752a6aa | 1379 | } |
dde0463b | 1380 | if (field->flags & VMS_POINTER) { |
e61a1e0a | 1381 | base_addr = *(void **)base_addr + field->start; |
dde0463b | 1382 | } |
f752a6aa | 1383 | for (i = 0; i < n_elems; i++) { |
e61a1e0a | 1384 | void *addr = base_addr + size * i; |
ec245e21 | 1385 | |
19df438b JQ |
1386 | if (field->flags & VMS_ARRAY_OF_POINTER) { |
1387 | addr = *(void **)addr; | |
1388 | } | |
ec245e21 | 1389 | if (field->flags & VMS_STRUCT) { |
fa3aad24 | 1390 | ret = vmstate_load_state(f, field->vmsd, addr, field->vmsd->version_id); |
ec245e21 | 1391 | } else { |
e61a1e0a | 1392 | ret = field->info->get(f, addr, size); |
ec245e21 JQ |
1393 | |
1394 | } | |
f752a6aa JQ |
1395 | if (ret < 0) { |
1396 | return ret; | |
1397 | } | |
9ed7d6ae JQ |
1398 | } |
1399 | } | |
1400 | field++; | |
1401 | } | |
811814bd JQ |
1402 | ret = vmstate_subsection_load(f, vmsd, opaque); |
1403 | if (ret != 0) { | |
1404 | return ret; | |
1405 | } | |
752ff2fa | 1406 | if (vmsd->post_load) { |
e59fb374 | 1407 | return vmsd->post_load(opaque, version_id); |
752ff2fa | 1408 | } |
9ed7d6ae JQ |
1409 | return 0; |
1410 | } | |
1411 | ||
1412 | void vmstate_save_state(QEMUFile *f, const VMStateDescription *vmsd, | |
84e2e3eb | 1413 | void *opaque) |
9ed7d6ae JQ |
1414 | { |
1415 | VMStateField *field = vmsd->fields; | |
1416 | ||
8fb0791d JQ |
1417 | if (vmsd->pre_save) { |
1418 | vmsd->pre_save(opaque); | |
1419 | } | |
9ed7d6ae | 1420 | while(field->name) { |
f11f6a5f JQ |
1421 | if (!field->field_exists || |
1422 | field->field_exists(opaque, vmsd->version_id)) { | |
1423 | void *base_addr = opaque + field->offset; | |
1424 | int i, n_elems = 1; | |
e61a1e0a | 1425 | int size = field->size; |
dde0463b | 1426 | |
e61a1e0a JQ |
1427 | if (field->flags & VMS_VBUFFER) { |
1428 | size = *(int32_t *)(opaque+field->size_offset); | |
33599e2a JQ |
1429 | if (field->flags & VMS_MULTIPLY) { |
1430 | size *= field->size; | |
1431 | } | |
e61a1e0a | 1432 | } |
f11f6a5f JQ |
1433 | if (field->flags & VMS_ARRAY) { |
1434 | n_elems = field->num; | |
d6698281 JQ |
1435 | } else if (field->flags & VMS_VARRAY_INT32) { |
1436 | n_elems = *(int32_t *)(opaque+field->num_offset); | |
bdb4941d JQ |
1437 | } else if (field->flags & VMS_VARRAY_UINT16) { |
1438 | n_elems = *(uint16_t *)(opaque+field->num_offset); | |
b784421c JQ |
1439 | } else if (field->flags & VMS_VARRAY_UINT8) { |
1440 | n_elems = *(uint8_t *)(opaque+field->num_offset); | |
f11f6a5f JQ |
1441 | } |
1442 | if (field->flags & VMS_POINTER) { | |
e61a1e0a | 1443 | base_addr = *(void **)base_addr + field->start; |
f11f6a5f JQ |
1444 | } |
1445 | for (i = 0; i < n_elems; i++) { | |
e61a1e0a | 1446 | void *addr = base_addr + size * i; |
ec245e21 | 1447 | |
8595387e JQ |
1448 | if (field->flags & VMS_ARRAY_OF_POINTER) { |
1449 | addr = *(void **)addr; | |
1450 | } | |
f11f6a5f JQ |
1451 | if (field->flags & VMS_STRUCT) { |
1452 | vmstate_save_state(f, field->vmsd, addr); | |
1453 | } else { | |
e61a1e0a | 1454 | field->info->put(f, addr, size); |
f11f6a5f | 1455 | } |
ec245e21 | 1456 | } |
dde0463b | 1457 | } |
9ed7d6ae JQ |
1458 | field++; |
1459 | } | |
811814bd | 1460 | vmstate_subsection_save(f, vmsd, opaque); |
9ed7d6ae JQ |
1461 | } |
1462 | ||
4082be4d JQ |
1463 | static int vmstate_load(QEMUFile *f, SaveStateEntry *se, int version_id) |
1464 | { | |
9ed7d6ae JQ |
1465 | if (!se->vmsd) { /* Old style */ |
1466 | return se->load_state(f, se->opaque, version_id); | |
1467 | } | |
1468 | return vmstate_load_state(f, se->vmsd, se->opaque, version_id); | |
4082be4d JQ |
1469 | } |
1470 | ||
dc912121 | 1471 | static void vmstate_save(QEMUFile *f, SaveStateEntry *se) |
4082be4d | 1472 | { |
9ed7d6ae JQ |
1473 | if (!se->vmsd) { /* Old style */ |
1474 | se->save_state(f, se->opaque); | |
dc912121 | 1475 | return; |
9ed7d6ae JQ |
1476 | } |
1477 | vmstate_save_state(f,se->vmsd, se->opaque); | |
4082be4d JQ |
1478 | } |
1479 | ||
a672b469 AL |
1480 | #define QEMU_VM_FILE_MAGIC 0x5145564d |
1481 | #define QEMU_VM_FILE_VERSION_COMPAT 0x00000002 | |
1482 | #define QEMU_VM_FILE_VERSION 0x00000003 | |
1483 | ||
1484 | #define QEMU_VM_EOF 0x00 | |
1485 | #define QEMU_VM_SECTION_START 0x01 | |
1486 | #define QEMU_VM_SECTION_PART 0x02 | |
1487 | #define QEMU_VM_SECTION_END 0x03 | |
1488 | #define QEMU_VM_SECTION_FULL 0x04 | |
811814bd | 1489 | #define QEMU_VM_SUBSECTION 0x05 |
a672b469 | 1490 | |
dc912121 AW |
1491 | bool qemu_savevm_state_blocked(Monitor *mon) |
1492 | { | |
1493 | SaveStateEntry *se; | |
1494 | ||
1495 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { | |
1496 | if (se->no_migrate) { | |
1497 | monitor_printf(mon, "state blocked by non-migratable device '%s'\n", | |
1498 | se->idstr); | |
1499 | return true; | |
1500 | } | |
1501 | } | |
1502 | return false; | |
1503 | } | |
1504 | ||
f327aa0c JK |
1505 | int qemu_savevm_state_begin(Monitor *mon, QEMUFile *f, int blk_enable, |
1506 | int shared) | |
a672b469 AL |
1507 | { |
1508 | SaveStateEntry *se; | |
39346385 | 1509 | int ret; |
a672b469 | 1510 | |
c163b5ca | 1511 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
1512 | if(se->set_params == NULL) { | |
1513 | continue; | |
1514 | } | |
1515 | se->set_params(blk_enable, shared, se->opaque); | |
1516 | } | |
1517 | ||
a672b469 AL |
1518 | qemu_put_be32(f, QEMU_VM_FILE_MAGIC); |
1519 | qemu_put_be32(f, QEMU_VM_FILE_VERSION); | |
1520 | ||
72cf2d4f | 1521 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
a672b469 AL |
1522 | int len; |
1523 | ||
1524 | if (se->save_live_state == NULL) | |
1525 | continue; | |
1526 | ||
1527 | /* Section type */ | |
1528 | qemu_put_byte(f, QEMU_VM_SECTION_START); | |
1529 | qemu_put_be32(f, se->section_id); | |
1530 | ||
1531 | /* ID string */ | |
1532 | len = strlen(se->idstr); | |
1533 | qemu_put_byte(f, len); | |
1534 | qemu_put_buffer(f, (uint8_t *)se->idstr, len); | |
1535 | ||
1536 | qemu_put_be32(f, se->instance_id); | |
1537 | qemu_put_be32(f, se->version_id); | |
1538 | ||
2975725f JQ |
1539 | ret = se->save_live_state(mon, f, QEMU_VM_SECTION_START, se->opaque); |
1540 | if (ret < 0) { | |
1541 | qemu_savevm_state_cancel(mon, f); | |
1542 | return ret; | |
1543 | } | |
a672b469 | 1544 | } |
624b9cc2 | 1545 | ret = qemu_file_get_error(f); |
39346385 | 1546 | if (ret != 0) { |
f327aa0c | 1547 | qemu_savevm_state_cancel(mon, f); |
4ec7fcc7 | 1548 | } |
a672b469 | 1549 | |
39346385 JQ |
1550 | return ret; |
1551 | ||
a672b469 AL |
1552 | } |
1553 | ||
39346385 JQ |
1554 | /* |
1555 | * this funtion has three return values: | |
1556 | * negative: there was one error, and we have -errno. | |
1557 | * 0 : We haven't finished, caller have to go again | |
1558 | * 1 : We have finished, we can go to complete phase | |
1559 | */ | |
f327aa0c | 1560 | int qemu_savevm_state_iterate(Monitor *mon, QEMUFile *f) |
a672b469 AL |
1561 | { |
1562 | SaveStateEntry *se; | |
1563 | int ret = 1; | |
1564 | ||
72cf2d4f | 1565 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
a672b469 AL |
1566 | if (se->save_live_state == NULL) |
1567 | continue; | |
1568 | ||
1569 | /* Section type */ | |
1570 | qemu_put_byte(f, QEMU_VM_SECTION_PART); | |
1571 | qemu_put_be32(f, se->section_id); | |
1572 | ||
90697be8 | 1573 | ret = se->save_live_state(mon, f, QEMU_VM_SECTION_PART, se->opaque); |
2975725f | 1574 | if (ret <= 0) { |
90697be8 JK |
1575 | /* Do not proceed to the next vmstate before this one reported |
1576 | completion of the current stage. This serializes the migration | |
1577 | and reduces the probability that a faster changing state is | |
1578 | synchronized over and over again. */ | |
1579 | break; | |
1580 | } | |
a672b469 | 1581 | } |
39346385 JQ |
1582 | if (ret != 0) { |
1583 | return ret; | |
1584 | } | |
624b9cc2 | 1585 | ret = qemu_file_get_error(f); |
39346385 | 1586 | if (ret != 0) { |
f327aa0c | 1587 | qemu_savevm_state_cancel(mon, f); |
4ec7fcc7 | 1588 | } |
39346385 | 1589 | return ret; |
a672b469 AL |
1590 | } |
1591 | ||
f327aa0c | 1592 | int qemu_savevm_state_complete(Monitor *mon, QEMUFile *f) |
a672b469 AL |
1593 | { |
1594 | SaveStateEntry *se; | |
2975725f | 1595 | int ret; |
a672b469 | 1596 | |
ea375f9a JK |
1597 | cpu_synchronize_all_states(); |
1598 | ||
72cf2d4f | 1599 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
a672b469 AL |
1600 | if (se->save_live_state == NULL) |
1601 | continue; | |
1602 | ||
1603 | /* Section type */ | |
1604 | qemu_put_byte(f, QEMU_VM_SECTION_END); | |
1605 | qemu_put_be32(f, se->section_id); | |
1606 | ||
2975725f JQ |
1607 | ret = se->save_live_state(mon, f, QEMU_VM_SECTION_END, se->opaque); |
1608 | if (ret < 0) { | |
1609 | return ret; | |
1610 | } | |
a672b469 AL |
1611 | } |
1612 | ||
72cf2d4f | 1613 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
a672b469 AL |
1614 | int len; |
1615 | ||
9ed7d6ae | 1616 | if (se->save_state == NULL && se->vmsd == NULL) |
a672b469 AL |
1617 | continue; |
1618 | ||
1619 | /* Section type */ | |
1620 | qemu_put_byte(f, QEMU_VM_SECTION_FULL); | |
1621 | qemu_put_be32(f, se->section_id); | |
1622 | ||
1623 | /* ID string */ | |
1624 | len = strlen(se->idstr); | |
1625 | qemu_put_byte(f, len); | |
1626 | qemu_put_buffer(f, (uint8_t *)se->idstr, len); | |
1627 | ||
1628 | qemu_put_be32(f, se->instance_id); | |
1629 | qemu_put_be32(f, se->version_id); | |
1630 | ||
dc912121 | 1631 | vmstate_save(f, se); |
a672b469 AL |
1632 | } |
1633 | ||
1634 | qemu_put_byte(f, QEMU_VM_EOF); | |
1635 | ||
624b9cc2 | 1636 | return qemu_file_get_error(f); |
a672b469 AL |
1637 | } |
1638 | ||
f327aa0c | 1639 | void qemu_savevm_state_cancel(Monitor *mon, QEMUFile *f) |
4ec7fcc7 JK |
1640 | { |
1641 | SaveStateEntry *se; | |
1642 | ||
1643 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { | |
1644 | if (se->save_live_state) { | |
f327aa0c | 1645 | se->save_live_state(mon, f, -1, se->opaque); |
4ec7fcc7 JK |
1646 | } |
1647 | } | |
1648 | } | |
1649 | ||
f327aa0c | 1650 | static int qemu_savevm_state(Monitor *mon, QEMUFile *f) |
a672b469 | 1651 | { |
a672b469 AL |
1652 | int ret; |
1653 | ||
dc912121 AW |
1654 | if (qemu_savevm_state_blocked(mon)) { |
1655 | ret = -EINVAL; | |
1656 | goto out; | |
1657 | } | |
1658 | ||
f327aa0c | 1659 | ret = qemu_savevm_state_begin(mon, f, 0, 0); |
a672b469 AL |
1660 | if (ret < 0) |
1661 | goto out; | |
1662 | ||
1663 | do { | |
f327aa0c | 1664 | ret = qemu_savevm_state_iterate(mon, f); |
a672b469 AL |
1665 | if (ret < 0) |
1666 | goto out; | |
1667 | } while (ret == 0); | |
1668 | ||
f327aa0c | 1669 | ret = qemu_savevm_state_complete(mon, f); |
a672b469 AL |
1670 | |
1671 | out: | |
39346385 | 1672 | if (ret == 0) { |
624b9cc2 | 1673 | ret = qemu_file_get_error(f); |
39346385 | 1674 | } |
a672b469 | 1675 | |
a672b469 AL |
1676 | return ret; |
1677 | } | |
1678 | ||
1679 | static SaveStateEntry *find_se(const char *idstr, int instance_id) | |
1680 | { | |
1681 | SaveStateEntry *se; | |
1682 | ||
72cf2d4f | 1683 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
a672b469 | 1684 | if (!strcmp(se->idstr, idstr) && |
4d2ffa08 JK |
1685 | (instance_id == se->instance_id || |
1686 | instance_id == se->alias_id)) | |
a672b469 | 1687 | return se; |
7685ee6a AW |
1688 | /* Migrating from an older version? */ |
1689 | if (strstr(se->idstr, idstr) && se->compat) { | |
1690 | if (!strcmp(se->compat->idstr, idstr) && | |
1691 | (instance_id == se->compat->instance_id || | |
1692 | instance_id == se->alias_id)) | |
1693 | return se; | |
1694 | } | |
a672b469 AL |
1695 | } |
1696 | return NULL; | |
1697 | } | |
1698 | ||
811814bd JQ |
1699 | static const VMStateDescription *vmstate_get_subsection(const VMStateSubsection *sub, char *idstr) |
1700 | { | |
1701 | while(sub && sub->needed) { | |
1702 | if (strcmp(idstr, sub->vmsd->name) == 0) { | |
1703 | return sub->vmsd; | |
1704 | } | |
1705 | sub++; | |
1706 | } | |
1707 | return NULL; | |
1708 | } | |
1709 | ||
1710 | static int vmstate_subsection_load(QEMUFile *f, const VMStateDescription *vmsd, | |
1711 | void *opaque) | |
1712 | { | |
c6380724 | 1713 | while (qemu_peek_byte(f, 0) == QEMU_VM_SUBSECTION) { |
811814bd JQ |
1714 | char idstr[256]; |
1715 | int ret; | |
c6380724 | 1716 | uint8_t version_id, len, size; |
811814bd JQ |
1717 | const VMStateDescription *sub_vmsd; |
1718 | ||
c6380724 JQ |
1719 | len = qemu_peek_byte(f, 1); |
1720 | if (len < strlen(vmsd->name) + 1) { | |
1721 | /* subsection name has be be "section_name/a" */ | |
1722 | return 0; | |
1723 | } | |
1724 | size = qemu_peek_buffer(f, (uint8_t *)idstr, len, 2); | |
1725 | if (size != len) { | |
1726 | return 0; | |
1727 | } | |
1728 | idstr[size] = 0; | |
811814bd | 1729 | |
c6380724 JQ |
1730 | if (strncmp(vmsd->name, idstr, strlen(vmsd->name)) != 0) { |
1731 | /* it don't have a valid subsection name */ | |
1732 | return 0; | |
1733 | } | |
3da9eebd | 1734 | sub_vmsd = vmstate_get_subsection(vmsd->subsections, idstr); |
811814bd JQ |
1735 | if (sub_vmsd == NULL) { |
1736 | return -ENOENT; | |
1737 | } | |
c6380724 JQ |
1738 | qemu_file_skip(f, 1); /* subsection */ |
1739 | qemu_file_skip(f, 1); /* len */ | |
1740 | qemu_file_skip(f, len); /* idstr */ | |
1741 | version_id = qemu_get_be32(f); | |
1742 | ||
811814bd JQ |
1743 | ret = vmstate_load_state(f, sub_vmsd, opaque, version_id); |
1744 | if (ret) { | |
1745 | return ret; | |
1746 | } | |
1747 | } | |
1748 | return 0; | |
1749 | } | |
1750 | ||
1751 | static void vmstate_subsection_save(QEMUFile *f, const VMStateDescription *vmsd, | |
1752 | void *opaque) | |
1753 | { | |
1754 | const VMStateSubsection *sub = vmsd->subsections; | |
1755 | ||
1756 | while (sub && sub->needed) { | |
1757 | if (sub->needed(opaque)) { | |
1758 | const VMStateDescription *vmsd = sub->vmsd; | |
1759 | uint8_t len; | |
1760 | ||
1761 | qemu_put_byte(f, QEMU_VM_SUBSECTION); | |
1762 | len = strlen(vmsd->name); | |
1763 | qemu_put_byte(f, len); | |
1764 | qemu_put_buffer(f, (uint8_t *)vmsd->name, len); | |
1765 | qemu_put_be32(f, vmsd->version_id); | |
1766 | vmstate_save_state(f, vmsd, opaque); | |
1767 | } | |
1768 | sub++; | |
1769 | } | |
1770 | } | |
1771 | ||
a672b469 | 1772 | typedef struct LoadStateEntry { |
72cf2d4f | 1773 | QLIST_ENTRY(LoadStateEntry) entry; |
a672b469 AL |
1774 | SaveStateEntry *se; |
1775 | int section_id; | |
1776 | int version_id; | |
a672b469 AL |
1777 | } LoadStateEntry; |
1778 | ||
a672b469 AL |
1779 | int qemu_loadvm_state(QEMUFile *f) |
1780 | { | |
72cf2d4f BS |
1781 | QLIST_HEAD(, LoadStateEntry) loadvm_handlers = |
1782 | QLIST_HEAD_INITIALIZER(loadvm_handlers); | |
f4dbb8dd | 1783 | LoadStateEntry *le, *new_le; |
a672b469 AL |
1784 | uint8_t section_type; |
1785 | unsigned int v; | |
1786 | int ret; | |
1787 | ||
dc912121 AW |
1788 | if (qemu_savevm_state_blocked(default_mon)) { |
1789 | return -EINVAL; | |
1790 | } | |
1791 | ||
a672b469 AL |
1792 | v = qemu_get_be32(f); |
1793 | if (v != QEMU_VM_FILE_MAGIC) | |
1794 | return -EINVAL; | |
1795 | ||
1796 | v = qemu_get_be32(f); | |
bbfe1408 JQ |
1797 | if (v == QEMU_VM_FILE_VERSION_COMPAT) { |
1798 | fprintf(stderr, "SaveVM v2 format is obsolete and don't work anymore\n"); | |
1799 | return -ENOTSUP; | |
1800 | } | |
a672b469 AL |
1801 | if (v != QEMU_VM_FILE_VERSION) |
1802 | return -ENOTSUP; | |
1803 | ||
1804 | while ((section_type = qemu_get_byte(f)) != QEMU_VM_EOF) { | |
1805 | uint32_t instance_id, version_id, section_id; | |
a672b469 AL |
1806 | SaveStateEntry *se; |
1807 | char idstr[257]; | |
1808 | int len; | |
1809 | ||
1810 | switch (section_type) { | |
1811 | case QEMU_VM_SECTION_START: | |
1812 | case QEMU_VM_SECTION_FULL: | |
1813 | /* Read section start */ | |
1814 | section_id = qemu_get_be32(f); | |
1815 | len = qemu_get_byte(f); | |
1816 | qemu_get_buffer(f, (uint8_t *)idstr, len); | |
1817 | idstr[len] = 0; | |
1818 | instance_id = qemu_get_be32(f); | |
1819 | version_id = qemu_get_be32(f); | |
1820 | ||
1821 | /* Find savevm section */ | |
1822 | se = find_se(idstr, instance_id); | |
1823 | if (se == NULL) { | |
1824 | fprintf(stderr, "Unknown savevm section or instance '%s' %d\n", idstr, instance_id); | |
1825 | ret = -EINVAL; | |
1826 | goto out; | |
1827 | } | |
1828 | ||
1829 | /* Validate version */ | |
1830 | if (version_id > se->version_id) { | |
1831 | fprintf(stderr, "savevm: unsupported version %d for '%s' v%d\n", | |
1832 | version_id, idstr, se->version_id); | |
1833 | ret = -EINVAL; | |
1834 | goto out; | |
1835 | } | |
1836 | ||
1837 | /* Add entry */ | |
7267c094 | 1838 | le = g_malloc0(sizeof(*le)); |
a672b469 AL |
1839 | |
1840 | le->se = se; | |
1841 | le->section_id = section_id; | |
1842 | le->version_id = version_id; | |
72cf2d4f | 1843 | QLIST_INSERT_HEAD(&loadvm_handlers, le, entry); |
a672b469 | 1844 | |
4082be4d | 1845 | ret = vmstate_load(f, le->se, le->version_id); |
b5a22e4a JQ |
1846 | if (ret < 0) { |
1847 | fprintf(stderr, "qemu: warning: error while loading state for instance 0x%x of device '%s'\n", | |
1848 | instance_id, idstr); | |
1849 | goto out; | |
1850 | } | |
a672b469 AL |
1851 | break; |
1852 | case QEMU_VM_SECTION_PART: | |
1853 | case QEMU_VM_SECTION_END: | |
1854 | section_id = qemu_get_be32(f); | |
1855 | ||
72cf2d4f | 1856 | QLIST_FOREACH(le, &loadvm_handlers, entry) { |
f4dbb8dd JQ |
1857 | if (le->section_id == section_id) { |
1858 | break; | |
1859 | } | |
1860 | } | |
a672b469 AL |
1861 | if (le == NULL) { |
1862 | fprintf(stderr, "Unknown savevm section %d\n", section_id); | |
1863 | ret = -EINVAL; | |
1864 | goto out; | |
1865 | } | |
1866 | ||
4082be4d | 1867 | ret = vmstate_load(f, le->se, le->version_id); |
b5a22e4a JQ |
1868 | if (ret < 0) { |
1869 | fprintf(stderr, "qemu: warning: error while loading state section id %d\n", | |
1870 | section_id); | |
1871 | goto out; | |
1872 | } | |
a672b469 AL |
1873 | break; |
1874 | default: | |
1875 | fprintf(stderr, "Unknown savevm section type %d\n", section_type); | |
1876 | ret = -EINVAL; | |
1877 | goto out; | |
1878 | } | |
1879 | } | |
1880 | ||
ea375f9a JK |
1881 | cpu_synchronize_all_post_init(); |
1882 | ||
a672b469 AL |
1883 | ret = 0; |
1884 | ||
1885 | out: | |
72cf2d4f BS |
1886 | QLIST_FOREACH_SAFE(le, &loadvm_handlers, entry, new_le) { |
1887 | QLIST_REMOVE(le, entry); | |
7267c094 | 1888 | g_free(le); |
a672b469 AL |
1889 | } |
1890 | ||
42802d47 JQ |
1891 | if (ret == 0) { |
1892 | ret = qemu_file_get_error(f); | |
624b9cc2 | 1893 | } |
a672b469 AL |
1894 | |
1895 | return ret; | |
1896 | } | |
1897 | ||
a672b469 AL |
1898 | static int bdrv_snapshot_find(BlockDriverState *bs, QEMUSnapshotInfo *sn_info, |
1899 | const char *name) | |
1900 | { | |
1901 | QEMUSnapshotInfo *sn_tab, *sn; | |
1902 | int nb_sns, i, ret; | |
1903 | ||
1904 | ret = -ENOENT; | |
1905 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
1906 | if (nb_sns < 0) | |
1907 | return ret; | |
1908 | for(i = 0; i < nb_sns; i++) { | |
1909 | sn = &sn_tab[i]; | |
1910 | if (!strcmp(sn->id_str, name) || !strcmp(sn->name, name)) { | |
1911 | *sn_info = *sn; | |
1912 | ret = 0; | |
1913 | break; | |
1914 | } | |
1915 | } | |
7267c094 | 1916 | g_free(sn_tab); |
a672b469 AL |
1917 | return ret; |
1918 | } | |
1919 | ||
cb499fb2 KW |
1920 | /* |
1921 | * Deletes snapshots of a given name in all opened images. | |
1922 | */ | |
1923 | static int del_existing_snapshots(Monitor *mon, const char *name) | |
1924 | { | |
1925 | BlockDriverState *bs; | |
cb499fb2 KW |
1926 | QEMUSnapshotInfo sn1, *snapshot = &sn1; |
1927 | int ret; | |
1928 | ||
dbc13590 MA |
1929 | bs = NULL; |
1930 | while ((bs = bdrv_next(bs))) { | |
cb499fb2 KW |
1931 | if (bdrv_can_snapshot(bs) && |
1932 | bdrv_snapshot_find(bs, snapshot, name) >= 0) | |
1933 | { | |
1934 | ret = bdrv_snapshot_delete(bs, name); | |
1935 | if (ret < 0) { | |
1936 | monitor_printf(mon, | |
1937 | "Error while deleting snapshot on '%s'\n", | |
1938 | bdrv_get_device_name(bs)); | |
1939 | return -1; | |
1940 | } | |
1941 | } | |
1942 | } | |
1943 | ||
1944 | return 0; | |
1945 | } | |
1946 | ||
d54908a5 | 1947 | void do_savevm(Monitor *mon, const QDict *qdict) |
a672b469 AL |
1948 | { |
1949 | BlockDriverState *bs, *bs1; | |
1950 | QEMUSnapshotInfo sn1, *sn = &sn1, old_sn1, *old_sn = &old_sn1; | |
cb499fb2 | 1951 | int ret; |
a672b469 AL |
1952 | QEMUFile *f; |
1953 | int saved_vm_running; | |
2d22b18f | 1954 | uint32_t vm_state_size; |
a672b469 AL |
1955 | #ifdef _WIN32 |
1956 | struct _timeb tb; | |
7d631a11 | 1957 | struct tm *ptm; |
a672b469 AL |
1958 | #else |
1959 | struct timeval tv; | |
7d631a11 | 1960 | struct tm tm; |
a672b469 | 1961 | #endif |
d54908a5 | 1962 | const char *name = qdict_get_try_str(qdict, "name"); |
a672b469 | 1963 | |
feeee5ac | 1964 | /* Verify if there is a device that doesn't support snapshots and is writable */ |
dbc13590 MA |
1965 | bs = NULL; |
1966 | while ((bs = bdrv_next(bs))) { | |
feeee5ac | 1967 | |
07b70bfb | 1968 | if (!bdrv_is_inserted(bs) || bdrv_is_read_only(bs)) { |
feeee5ac MDCF |
1969 | continue; |
1970 | } | |
1971 | ||
1972 | if (!bdrv_can_snapshot(bs)) { | |
1973 | monitor_printf(mon, "Device '%s' is writable but does not support snapshots.\n", | |
1974 | bdrv_get_device_name(bs)); | |
1975 | return; | |
1976 | } | |
1977 | } | |
1978 | ||
f9092b10 | 1979 | bs = bdrv_snapshots(); |
a672b469 | 1980 | if (!bs) { |
376253ec | 1981 | monitor_printf(mon, "No block device can accept snapshots\n"); |
a672b469 AL |
1982 | return; |
1983 | } | |
a672b469 | 1984 | |
1354869c | 1985 | saved_vm_running = runstate_is_running(); |
0461d5a6 | 1986 | vm_stop(RUN_STATE_SAVE_VM); |
a672b469 | 1987 | |
cb499fb2 | 1988 | memset(sn, 0, sizeof(*sn)); |
a672b469 AL |
1989 | |
1990 | /* fill auxiliary fields */ | |
1991 | #ifdef _WIN32 | |
1992 | _ftime(&tb); | |
1993 | sn->date_sec = tb.time; | |
1994 | sn->date_nsec = tb.millitm * 1000000; | |
1995 | #else | |
1996 | gettimeofday(&tv, NULL); | |
1997 | sn->date_sec = tv.tv_sec; | |
1998 | sn->date_nsec = tv.tv_usec * 1000; | |
1999 | #endif | |
74475455 | 2000 | sn->vm_clock_nsec = qemu_get_clock_ns(vm_clock); |
a672b469 | 2001 | |
7d631a11 MDCF |
2002 | if (name) { |
2003 | ret = bdrv_snapshot_find(bs, old_sn, name); | |
2004 | if (ret >= 0) { | |
2005 | pstrcpy(sn->name, sizeof(sn->name), old_sn->name); | |
2006 | pstrcpy(sn->id_str, sizeof(sn->id_str), old_sn->id_str); | |
2007 | } else { | |
2008 | pstrcpy(sn->name, sizeof(sn->name), name); | |
2009 | } | |
2010 | } else { | |
2011 | #ifdef _WIN32 | |
2012 | ptm = localtime(&tb.time); | |
2013 | strftime(sn->name, sizeof(sn->name), "vm-%Y%m%d%H%M%S", ptm); | |
2014 | #else | |
d7d9b528 BS |
2015 | /* cast below needed for OpenBSD where tv_sec is still 'long' */ |
2016 | localtime_r((const time_t *)&tv.tv_sec, &tm); | |
7d631a11 MDCF |
2017 | strftime(sn->name, sizeof(sn->name), "vm-%Y%m%d%H%M%S", &tm); |
2018 | #endif | |
2019 | } | |
2020 | ||
cb499fb2 | 2021 | /* Delete old snapshots of the same name */ |
f139a412 | 2022 | if (name && del_existing_snapshots(mon, name) < 0) { |
cb499fb2 KW |
2023 | goto the_end; |
2024 | } | |
2025 | ||
a672b469 | 2026 | /* save the VM state */ |
45566e9c | 2027 | f = qemu_fopen_bdrv(bs, 1); |
a672b469 | 2028 | if (!f) { |
376253ec | 2029 | monitor_printf(mon, "Could not open VM state file\n"); |
a672b469 AL |
2030 | goto the_end; |
2031 | } | |
f327aa0c | 2032 | ret = qemu_savevm_state(mon, f); |
2d22b18f | 2033 | vm_state_size = qemu_ftell(f); |
a672b469 AL |
2034 | qemu_fclose(f); |
2035 | if (ret < 0) { | |
376253ec | 2036 | monitor_printf(mon, "Error %d while writing VM\n", ret); |
a672b469 AL |
2037 | goto the_end; |
2038 | } | |
2039 | ||
2040 | /* create the snapshots */ | |
2041 | ||
dbc13590 MA |
2042 | bs1 = NULL; |
2043 | while ((bs1 = bdrv_next(bs1))) { | |
feeee5ac | 2044 | if (bdrv_can_snapshot(bs1)) { |
2d22b18f AL |
2045 | /* Write VM state size only to the image that contains the state */ |
2046 | sn->vm_state_size = (bs == bs1 ? vm_state_size : 0); | |
a672b469 AL |
2047 | ret = bdrv_snapshot_create(bs1, sn); |
2048 | if (ret < 0) { | |
376253ec AL |
2049 | monitor_printf(mon, "Error while creating snapshot on '%s'\n", |
2050 | bdrv_get_device_name(bs1)); | |
a672b469 AL |
2051 | } |
2052 | } | |
2053 | } | |
2054 | ||
2055 | the_end: | |
2056 | if (saved_vm_running) | |
2057 | vm_start(); | |
2058 | } | |
2059 | ||
03cd4655 | 2060 | int load_vmstate(const char *name) |
a672b469 | 2061 | { |
f0aa7a8b | 2062 | BlockDriverState *bs, *bs_vm_state; |
2d22b18f | 2063 | QEMUSnapshotInfo sn; |
a672b469 | 2064 | QEMUFile *f; |
751c6a17 | 2065 | int ret; |
a672b469 | 2066 | |
f0aa7a8b MDCF |
2067 | bs_vm_state = bdrv_snapshots(); |
2068 | if (!bs_vm_state) { | |
2069 | error_report("No block device supports snapshots"); | |
2070 | return -ENOTSUP; | |
2071 | } | |
2072 | ||
2073 | /* Don't even try to load empty VM states */ | |
2074 | ret = bdrv_snapshot_find(bs_vm_state, &sn, name); | |
2075 | if (ret < 0) { | |
2076 | return ret; | |
2077 | } else if (sn.vm_state_size == 0) { | |
e11480db KW |
2078 | error_report("This is a disk-only snapshot. Revert to it offline " |
2079 | "using qemu-img."); | |
f0aa7a8b MDCF |
2080 | return -EINVAL; |
2081 | } | |
2082 | ||
2083 | /* Verify if there is any device that doesn't support snapshots and is | |
2084 | writable and check if the requested snapshot is available too. */ | |
dbc13590 MA |
2085 | bs = NULL; |
2086 | while ((bs = bdrv_next(bs))) { | |
feeee5ac | 2087 | |
07b70bfb | 2088 | if (!bdrv_is_inserted(bs) || bdrv_is_read_only(bs)) { |
feeee5ac MDCF |
2089 | continue; |
2090 | } | |
2091 | ||
2092 | if (!bdrv_can_snapshot(bs)) { | |
2093 | error_report("Device '%s' is writable but does not support snapshots.", | |
2094 | bdrv_get_device_name(bs)); | |
2095 | return -ENOTSUP; | |
2096 | } | |
feeee5ac | 2097 | |
f0aa7a8b MDCF |
2098 | ret = bdrv_snapshot_find(bs, &sn, name); |
2099 | if (ret < 0) { | |
2100 | error_report("Device '%s' does not have the requested snapshot '%s'", | |
2101 | bdrv_get_device_name(bs), name); | |
2102 | return ret; | |
2103 | } | |
a672b469 AL |
2104 | } |
2105 | ||
2106 | /* Flush all IO requests so they don't interfere with the new state. */ | |
2107 | qemu_aio_flush(); | |
2108 | ||
f0aa7a8b MDCF |
2109 | bs = NULL; |
2110 | while ((bs = bdrv_next(bs))) { | |
2111 | if (bdrv_can_snapshot(bs)) { | |
2112 | ret = bdrv_snapshot_goto(bs, name); | |
a672b469 | 2113 | if (ret < 0) { |
f0aa7a8b MDCF |
2114 | error_report("Error %d while activating snapshot '%s' on '%s'", |
2115 | ret, name, bdrv_get_device_name(bs)); | |
2116 | return ret; | |
a672b469 AL |
2117 | } |
2118 | } | |
2119 | } | |
2120 | ||
a672b469 | 2121 | /* restore the VM state */ |
f0aa7a8b | 2122 | f = qemu_fopen_bdrv(bs_vm_state, 0); |
a672b469 | 2123 | if (!f) { |
1ecda02b | 2124 | error_report("Could not open VM state file"); |
05f2401e | 2125 | return -EINVAL; |
a672b469 | 2126 | } |
f0aa7a8b | 2127 | |
5a8a49d7 | 2128 | qemu_system_reset(VMRESET_SILENT); |
a672b469 | 2129 | ret = qemu_loadvm_state(f); |
f0aa7a8b | 2130 | |
a672b469 AL |
2131 | qemu_fclose(f); |
2132 | if (ret < 0) { | |
1ecda02b | 2133 | error_report("Error %d while loading VM state", ret); |
05f2401e | 2134 | return ret; |
a672b469 | 2135 | } |
f0aa7a8b | 2136 | |
05f2401e | 2137 | return 0; |
7b630349 JQ |
2138 | } |
2139 | ||
d54908a5 | 2140 | void do_delvm(Monitor *mon, const QDict *qdict) |
a672b469 AL |
2141 | { |
2142 | BlockDriverState *bs, *bs1; | |
751c6a17 | 2143 | int ret; |
d54908a5 | 2144 | const char *name = qdict_get_str(qdict, "name"); |
a672b469 | 2145 | |
f9092b10 | 2146 | bs = bdrv_snapshots(); |
a672b469 | 2147 | if (!bs) { |
376253ec | 2148 | monitor_printf(mon, "No block device supports snapshots\n"); |
a672b469 AL |
2149 | return; |
2150 | } | |
2151 | ||
dbc13590 MA |
2152 | bs1 = NULL; |
2153 | while ((bs1 = bdrv_next(bs1))) { | |
feeee5ac | 2154 | if (bdrv_can_snapshot(bs1)) { |
a672b469 AL |
2155 | ret = bdrv_snapshot_delete(bs1, name); |
2156 | if (ret < 0) { | |
2157 | if (ret == -ENOTSUP) | |
376253ec AL |
2158 | monitor_printf(mon, |
2159 | "Snapshots not supported on device '%s'\n", | |
2160 | bdrv_get_device_name(bs1)); | |
a672b469 | 2161 | else |
376253ec AL |
2162 | monitor_printf(mon, "Error %d while deleting snapshot on " |
2163 | "'%s'\n", ret, bdrv_get_device_name(bs1)); | |
a672b469 AL |
2164 | } |
2165 | } | |
2166 | } | |
2167 | } | |
2168 | ||
376253ec | 2169 | void do_info_snapshots(Monitor *mon) |
a672b469 AL |
2170 | { |
2171 | BlockDriverState *bs, *bs1; | |
f9209915 MDCF |
2172 | QEMUSnapshotInfo *sn_tab, *sn, s, *sn_info = &s; |
2173 | int nb_sns, i, ret, available; | |
2174 | int total; | |
2175 | int *available_snapshots; | |
a672b469 AL |
2176 | char buf[256]; |
2177 | ||
f9092b10 | 2178 | bs = bdrv_snapshots(); |
a672b469 | 2179 | if (!bs) { |
376253ec | 2180 | monitor_printf(mon, "No available block device supports snapshots\n"); |
a672b469 AL |
2181 | return; |
2182 | } | |
a672b469 AL |
2183 | |
2184 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
2185 | if (nb_sns < 0) { | |
376253ec | 2186 | monitor_printf(mon, "bdrv_snapshot_list: error %d\n", nb_sns); |
a672b469 AL |
2187 | return; |
2188 | } | |
f9209915 MDCF |
2189 | |
2190 | if (nb_sns == 0) { | |
2191 | monitor_printf(mon, "There is no snapshot available.\n"); | |
2192 | return; | |
2193 | } | |
2194 | ||
7267c094 | 2195 | available_snapshots = g_malloc0(sizeof(int) * nb_sns); |
f9209915 MDCF |
2196 | total = 0; |
2197 | for (i = 0; i < nb_sns; i++) { | |
a672b469 | 2198 | sn = &sn_tab[i]; |
f9209915 MDCF |
2199 | available = 1; |
2200 | bs1 = NULL; | |
2201 | ||
2202 | while ((bs1 = bdrv_next(bs1))) { | |
2203 | if (bdrv_can_snapshot(bs1) && bs1 != bs) { | |
2204 | ret = bdrv_snapshot_find(bs1, sn_info, sn->id_str); | |
2205 | if (ret < 0) { | |
2206 | available = 0; | |
2207 | break; | |
2208 | } | |
2209 | } | |
2210 | } | |
2211 | ||
2212 | if (available) { | |
2213 | available_snapshots[total] = i; | |
2214 | total++; | |
2215 | } | |
a672b469 | 2216 | } |
f9209915 MDCF |
2217 | |
2218 | if (total > 0) { | |
2219 | monitor_printf(mon, "%s\n", bdrv_snapshot_dump(buf, sizeof(buf), NULL)); | |
2220 | for (i = 0; i < total; i++) { | |
2221 | sn = &sn_tab[available_snapshots[i]]; | |
2222 | monitor_printf(mon, "%s\n", bdrv_snapshot_dump(buf, sizeof(buf), sn)); | |
2223 | } | |
2224 | } else { | |
2225 | monitor_printf(mon, "There is no suitable snapshot available\n"); | |
2226 | } | |
2227 | ||
7267c094 AL |
2228 | g_free(sn_tab); |
2229 | g_free(available_snapshots); | |
f9209915 | 2230 | |
a672b469 | 2231 | } |