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Commit | Line | Data |
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a672b469 AL |
1 | /* |
2 | * QEMU System Emulator | |
3 | * | |
4 | * Copyright (c) 2003-2008 Fabrice Bellard | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
7 | * of this software and associated documentation files (the "Software"), to deal | |
8 | * in the Software without restriction, including without limitation the rights | |
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
10 | * copies of the Software, and to permit persons to whom the Software is | |
11 | * furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
22 | * THE SOFTWARE. | |
23 | */ | |
a672b469 AL |
24 | #include <unistd.h> |
25 | #include <fcntl.h> | |
26 | #include <signal.h> | |
27 | #include <time.h> | |
28 | #include <errno.h> | |
29 | #include <sys/time.h> | |
30 | #include <zlib.h> | |
31 | ||
71e72a19 | 32 | /* Needed early for CONFIG_BSD etc. */ |
d40cdb10 BS |
33 | #include "config-host.h" |
34 | ||
a672b469 AL |
35 | #ifndef _WIN32 |
36 | #include <sys/times.h> | |
37 | #include <sys/wait.h> | |
38 | #include <termios.h> | |
39 | #include <sys/mman.h> | |
40 | #include <sys/ioctl.h> | |
41 | #include <sys/resource.h> | |
42 | #include <sys/socket.h> | |
43 | #include <netinet/in.h> | |
44 | #include <net/if.h> | |
45 | #if defined(__NetBSD__) | |
46 | #include <net/if_tap.h> | |
47 | #endif | |
48 | #ifdef __linux__ | |
49 | #include <linux/if_tun.h> | |
50 | #endif | |
51 | #include <arpa/inet.h> | |
52 | #include <dirent.h> | |
53 | #include <netdb.h> | |
54 | #include <sys/select.h> | |
71e72a19 | 55 | #ifdef CONFIG_BSD |
a672b469 | 56 | #include <sys/stat.h> |
c5e97233 | 57 | #if defined(__FreeBSD__) || defined(__DragonFly__) |
a672b469 AL |
58 | #include <libutil.h> |
59 | #else | |
60 | #include <util.h> | |
61 | #endif | |
62 | #elif defined (__GLIBC__) && defined (__FreeBSD_kernel__) | |
63 | #include <freebsd/stdlib.h> | |
64 | #else | |
65 | #ifdef __linux__ | |
66 | #include <pty.h> | |
67 | #include <malloc.h> | |
68 | #include <linux/rtc.h> | |
69 | #endif | |
70 | #endif | |
71 | #endif | |
72 | ||
73 | #ifdef _WIN32 | |
49dc768d | 74 | #include <windows.h> |
a672b469 AL |
75 | #include <malloc.h> |
76 | #include <sys/timeb.h> | |
77 | #include <mmsystem.h> | |
78 | #define getopt_long_only getopt_long | |
79 | #define memalign(align, size) malloc(size) | |
80 | #endif | |
81 | ||
511d2b14 BS |
82 | #include "qemu-common.h" |
83 | #include "hw/hw.h" | |
84 | #include "net.h" | |
85 | #include "monitor.h" | |
86 | #include "sysemu.h" | |
87 | #include "qemu-timer.h" | |
88 | #include "qemu-char.h" | |
89 | #include "block.h" | |
90 | #include "audio/audio.h" | |
91 | #include "migration.h" | |
92 | #include "qemu_socket.h" | |
72cf2d4f | 93 | #include "qemu-queue.h" |
511d2b14 | 94 | |
a672b469 AL |
95 | /* point to the block driver where the snapshots are managed */ |
96 | static BlockDriverState *bs_snapshots; | |
97 | ||
98 | #define SELF_ANNOUNCE_ROUNDS 5 | |
a672b469 | 99 | |
18995b98 N |
100 | #ifndef ETH_P_RARP |
101 | #define ETH_P_RARP 0x0835 | |
102 | #endif | |
103 | #define ARP_HTYPE_ETH 0x0001 | |
104 | #define ARP_PTYPE_IP 0x0800 | |
105 | #define ARP_OP_REQUEST_REV 0x3 | |
106 | ||
107 | static int announce_self_create(uint8_t *buf, | |
a672b469 AL |
108 | uint8_t *mac_addr) |
109 | { | |
18995b98 N |
110 | /* Ethernet header. */ |
111 | memset(buf, 0xff, 6); /* destination MAC addr */ | |
112 | memcpy(buf + 6, mac_addr, 6); /* source MAC addr */ | |
113 | *(uint16_t *)(buf + 12) = htons(ETH_P_RARP); /* ethertype */ | |
114 | ||
115 | /* RARP header. */ | |
116 | *(uint16_t *)(buf + 14) = htons(ARP_HTYPE_ETH); /* hardware addr space */ | |
117 | *(uint16_t *)(buf + 16) = htons(ARP_PTYPE_IP); /* protocol addr space */ | |
118 | *(buf + 18) = 6; /* hardware addr length (ethernet) */ | |
119 | *(buf + 19) = 4; /* protocol addr length (IPv4) */ | |
120 | *(uint16_t *)(buf + 20) = htons(ARP_OP_REQUEST_REV); /* opcode */ | |
121 | memcpy(buf + 22, mac_addr, 6); /* source hw addr */ | |
122 | memset(buf + 28, 0x00, 4); /* source protocol addr */ | |
123 | memcpy(buf + 32, mac_addr, 6); /* target hw addr */ | |
124 | memset(buf + 38, 0x00, 4); /* target protocol addr */ | |
125 | ||
126 | /* Padding to get up to 60 bytes (ethernet min packet size, minus FCS). */ | |
127 | memset(buf + 42, 0x00, 18); | |
128 | ||
129 | return 60; /* len (FCS will be added by hardware) */ | |
a672b469 AL |
130 | } |
131 | ||
ed8b330b | 132 | static void qemu_announce_self_once(void *opaque) |
a672b469 | 133 | { |
ed8b330b | 134 | int i, len; |
a672b469 AL |
135 | VLANState *vlan; |
136 | VLANClientState *vc; | |
18995b98 | 137 | uint8_t buf[60]; |
ed8b330b GN |
138 | static int count = SELF_ANNOUNCE_ROUNDS; |
139 | QEMUTimer *timer = *(QEMUTimer **)opaque; | |
a672b469 | 140 | |
3450df30 AL |
141 | for (i = 0; i < MAX_NICS; i++) { |
142 | if (!nd_table[i].used) | |
143 | continue; | |
a672b469 AL |
144 | len = announce_self_create(buf, nd_table[i].macaddr); |
145 | vlan = nd_table[i].vlan; | |
5610c3aa | 146 | QTAILQ_FOREACH(vc, &vlan->clients, next) { |
e3f5ec2b | 147 | vc->receive(vc, buf, len); |
a672b469 AL |
148 | } |
149 | } | |
18995b98 N |
150 | if (--count) { |
151 | /* delay 50ms, 150ms, 250ms, ... */ | |
152 | qemu_mod_timer(timer, qemu_get_clock(rt_clock) + | |
153 | 50 + (SELF_ANNOUNCE_ROUNDS - count - 1) * 100); | |
ed8b330b GN |
154 | } else { |
155 | qemu_del_timer(timer); | |
156 | qemu_free_timer(timer); | |
157 | } | |
158 | } | |
159 | ||
160 | void qemu_announce_self(void) | |
161 | { | |
162 | static QEMUTimer *timer; | |
163 | timer = qemu_new_timer(rt_clock, qemu_announce_self_once, &timer); | |
164 | qemu_announce_self_once(&timer); | |
a672b469 AL |
165 | } |
166 | ||
167 | /***********************************************************/ | |
168 | /* savevm/loadvm support */ | |
169 | ||
170 | #define IO_BUF_SIZE 32768 | |
171 | ||
172 | struct QEMUFile { | |
173 | QEMUFilePutBufferFunc *put_buffer; | |
174 | QEMUFileGetBufferFunc *get_buffer; | |
175 | QEMUFileCloseFunc *close; | |
176 | QEMUFileRateLimit *rate_limit; | |
19629537 | 177 | QEMUFileSetRateLimit *set_rate_limit; |
a672b469 AL |
178 | void *opaque; |
179 | int is_write; | |
180 | ||
181 | int64_t buf_offset; /* start of buffer when writing, end of buffer | |
182 | when reading */ | |
183 | int buf_index; | |
184 | int buf_size; /* 0 when writing */ | |
185 | uint8_t buf[IO_BUF_SIZE]; | |
186 | ||
187 | int has_error; | |
188 | }; | |
189 | ||
7f79dd28 | 190 | typedef struct QEMUFileStdio |
a672b469 | 191 | { |
7f79dd28 | 192 | FILE *stdio_file; |
a672b469 | 193 | QEMUFile *file; |
7f79dd28 | 194 | } QEMUFileStdio; |
a672b469 AL |
195 | |
196 | typedef struct QEMUFileSocket | |
197 | { | |
198 | int fd; | |
199 | QEMUFile *file; | |
200 | } QEMUFileSocket; | |
201 | ||
202 | static int socket_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) | |
203 | { | |
204 | QEMUFileSocket *s = opaque; | |
205 | ssize_t len; | |
206 | ||
207 | do { | |
c5b76b38 | 208 | len = recv(s->fd, (void *)buf, size, 0); |
a672b469 AL |
209 | } while (len == -1 && socket_error() == EINTR); |
210 | ||
211 | if (len == -1) | |
212 | len = -socket_error(); | |
213 | ||
214 | return len; | |
215 | } | |
216 | ||
217 | static int socket_close(void *opaque) | |
218 | { | |
219 | QEMUFileSocket *s = opaque; | |
220 | qemu_free(s); | |
221 | return 0; | |
222 | } | |
223 | ||
7f79dd28 | 224 | static int stdio_put_buffer(void *opaque, const uint8_t *buf, int64_t pos, int size) |
a672b469 | 225 | { |
7f79dd28 PB |
226 | QEMUFileStdio *s = opaque; |
227 | return fwrite(buf, 1, size, s->stdio_file); | |
a672b469 AL |
228 | } |
229 | ||
7f79dd28 | 230 | static int stdio_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) |
a672b469 | 231 | { |
7f79dd28 PB |
232 | QEMUFileStdio *s = opaque; |
233 | FILE *fp = s->stdio_file; | |
8a67ec4d UL |
234 | int bytes; |
235 | ||
236 | do { | |
237 | clearerr(fp); | |
238 | bytes = fread(buf, 1, size, fp); | |
239 | } while ((bytes == 0) && ferror(fp) && (errno == EINTR)); | |
240 | return bytes; | |
a672b469 AL |
241 | } |
242 | ||
7f79dd28 PB |
243 | static int stdio_pclose(void *opaque) |
244 | { | |
245 | QEMUFileStdio *s = opaque; | |
246 | pclose(s->stdio_file); | |
247 | qemu_free(s); | |
248 | return 0; | |
249 | } | |
250 | ||
251 | static int stdio_fclose(void *opaque) | |
a672b469 | 252 | { |
7f79dd28 PB |
253 | QEMUFileStdio *s = opaque; |
254 | fclose(s->stdio_file); | |
a672b469 AL |
255 | qemu_free(s); |
256 | return 0; | |
257 | } | |
258 | ||
7f79dd28 | 259 | QEMUFile *qemu_popen(FILE *stdio_file, const char *mode) |
a672b469 | 260 | { |
7f79dd28 | 261 | QEMUFileStdio *s; |
a672b469 | 262 | |
7f79dd28 | 263 | if (stdio_file == NULL || mode == NULL || (mode[0] != 'r' && mode[0] != 'w') || mode[1] != 0) { |
a672b469 AL |
264 | fprintf(stderr, "qemu_popen: Argument validity check failed\n"); |
265 | return NULL; | |
266 | } | |
267 | ||
7f79dd28 | 268 | s = qemu_mallocz(sizeof(QEMUFileStdio)); |
a672b469 | 269 | |
7f79dd28 | 270 | s->stdio_file = stdio_file; |
a672b469 AL |
271 | |
272 | if(mode[0] == 'r') { | |
7f79dd28 | 273 | s->file = qemu_fopen_ops(s, NULL, stdio_get_buffer, stdio_pclose, NULL, NULL); |
a672b469 | 274 | } else { |
7f79dd28 | 275 | s->file = qemu_fopen_ops(s, stdio_put_buffer, NULL, stdio_pclose, NULL, NULL); |
a672b469 | 276 | } |
a672b469 AL |
277 | return s->file; |
278 | } | |
279 | ||
280 | QEMUFile *qemu_popen_cmd(const char *command, const char *mode) | |
281 | { | |
282 | FILE *popen_file; | |
283 | ||
284 | popen_file = popen(command, mode); | |
285 | if(popen_file == NULL) { | |
286 | return NULL; | |
287 | } | |
288 | ||
289 | return qemu_popen(popen_file, mode); | |
290 | } | |
291 | ||
7f79dd28 | 292 | int qemu_stdio_fd(QEMUFile *f) |
8a43b1ea | 293 | { |
7f79dd28 | 294 | QEMUFileStdio *p; |
8a43b1ea CL |
295 | int fd; |
296 | ||
7f79dd28 PB |
297 | p = (QEMUFileStdio *)f->opaque; |
298 | fd = fileno(p->stdio_file); | |
8a43b1ea CL |
299 | |
300 | return fd; | |
301 | } | |
302 | ||
5ac1fad3 PB |
303 | QEMUFile *qemu_fdopen(int fd, const char *mode) |
304 | { | |
305 | QEMUFileStdio *s; | |
306 | ||
307 | if (mode == NULL || | |
308 | (mode[0] != 'r' && mode[0] != 'w') || | |
309 | mode[1] != 'b' || mode[2] != 0) { | |
310 | fprintf(stderr, "qemu_fdopen: Argument validity check failed\n"); | |
311 | return NULL; | |
312 | } | |
313 | ||
314 | s = qemu_mallocz(sizeof(QEMUFileStdio)); | |
315 | s->stdio_file = fdopen(fd, mode); | |
316 | if (!s->stdio_file) | |
317 | goto fail; | |
318 | ||
319 | if(mode[0] == 'r') { | |
320 | s->file = qemu_fopen_ops(s, NULL, stdio_get_buffer, stdio_fclose, NULL, NULL); | |
321 | } else { | |
322 | s->file = qemu_fopen_ops(s, stdio_put_buffer, NULL, stdio_fclose, NULL, NULL); | |
323 | } | |
324 | return s->file; | |
325 | ||
326 | fail: | |
327 | qemu_free(s); | |
328 | return NULL; | |
329 | } | |
330 | ||
a672b469 AL |
331 | QEMUFile *qemu_fopen_socket(int fd) |
332 | { | |
333 | QEMUFileSocket *s = qemu_mallocz(sizeof(QEMUFileSocket)); | |
334 | ||
a672b469 | 335 | s->fd = fd; |
19629537 | 336 | s->file = qemu_fopen_ops(s, NULL, socket_get_buffer, socket_close, NULL, NULL); |
a672b469 AL |
337 | return s->file; |
338 | } | |
339 | ||
a672b469 AL |
340 | static int file_put_buffer(void *opaque, const uint8_t *buf, |
341 | int64_t pos, int size) | |
342 | { | |
343 | QEMUFileStdio *s = opaque; | |
7f79dd28 PB |
344 | fseek(s->stdio_file, pos, SEEK_SET); |
345 | fwrite(buf, 1, size, s->stdio_file); | |
a672b469 AL |
346 | return size; |
347 | } | |
348 | ||
349 | static int file_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) | |
350 | { | |
351 | QEMUFileStdio *s = opaque; | |
7f79dd28 PB |
352 | fseek(s->stdio_file, pos, SEEK_SET); |
353 | return fread(buf, 1, size, s->stdio_file); | |
a672b469 AL |
354 | } |
355 | ||
356 | QEMUFile *qemu_fopen(const char *filename, const char *mode) | |
357 | { | |
358 | QEMUFileStdio *s; | |
359 | ||
7f79dd28 PB |
360 | if (mode == NULL || |
361 | (mode[0] != 'r' && mode[0] != 'w') || | |
362 | mode[1] != 'b' || mode[2] != 0) { | |
363 | fprintf(stderr, "qemu_fdopen: Argument validity check failed\n"); | |
364 | return NULL; | |
365 | } | |
366 | ||
a672b469 | 367 | s = qemu_mallocz(sizeof(QEMUFileStdio)); |
a672b469 | 368 | |
7f79dd28 PB |
369 | s->stdio_file = fopen(filename, mode); |
370 | if (!s->stdio_file) | |
a672b469 AL |
371 | goto fail; |
372 | ||
7f79dd28 PB |
373 | if(mode[0] == 'w') { |
374 | s->file = qemu_fopen_ops(s, file_put_buffer, NULL, stdio_fclose, NULL, NULL); | |
375 | } else { | |
376 | s->file = qemu_fopen_ops(s, NULL, file_get_buffer, stdio_fclose, NULL, NULL); | |
377 | } | |
378 | return s->file; | |
a672b469 | 379 | fail: |
a672b469 AL |
380 | qemu_free(s); |
381 | return NULL; | |
382 | } | |
383 | ||
178e08a5 | 384 | static int block_put_buffer(void *opaque, const uint8_t *buf, |
a672b469 AL |
385 | int64_t pos, int size) |
386 | { | |
45566e9c | 387 | bdrv_save_vmstate(opaque, buf, pos, size); |
a672b469 AL |
388 | return size; |
389 | } | |
390 | ||
178e08a5 | 391 | static int block_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) |
a672b469 | 392 | { |
45566e9c | 393 | return bdrv_load_vmstate(opaque, buf, pos, size); |
a672b469 AL |
394 | } |
395 | ||
396 | static int bdrv_fclose(void *opaque) | |
397 | { | |
a672b469 AL |
398 | return 0; |
399 | } | |
400 | ||
45566e9c | 401 | static QEMUFile *qemu_fopen_bdrv(BlockDriverState *bs, int is_writable) |
a672b469 | 402 | { |
a672b469 | 403 | if (is_writable) |
45566e9c CH |
404 | return qemu_fopen_ops(bs, block_put_buffer, NULL, bdrv_fclose, NULL, NULL); |
405 | return qemu_fopen_ops(bs, NULL, block_get_buffer, bdrv_fclose, NULL, NULL); | |
a672b469 AL |
406 | } |
407 | ||
408 | QEMUFile *qemu_fopen_ops(void *opaque, QEMUFilePutBufferFunc *put_buffer, | |
409 | QEMUFileGetBufferFunc *get_buffer, | |
410 | QEMUFileCloseFunc *close, | |
19629537 GC |
411 | QEMUFileRateLimit *rate_limit, |
412 | QEMUFileSetRateLimit *set_rate_limit) | |
a672b469 AL |
413 | { |
414 | QEMUFile *f; | |
415 | ||
416 | f = qemu_mallocz(sizeof(QEMUFile)); | |
a672b469 AL |
417 | |
418 | f->opaque = opaque; | |
419 | f->put_buffer = put_buffer; | |
420 | f->get_buffer = get_buffer; | |
421 | f->close = close; | |
422 | f->rate_limit = rate_limit; | |
19629537 | 423 | f->set_rate_limit = set_rate_limit; |
a672b469 AL |
424 | f->is_write = 0; |
425 | ||
426 | return f; | |
427 | } | |
428 | ||
429 | int qemu_file_has_error(QEMUFile *f) | |
430 | { | |
431 | return f->has_error; | |
432 | } | |
433 | ||
4dabe248 AL |
434 | void qemu_file_set_error(QEMUFile *f) |
435 | { | |
436 | f->has_error = 1; | |
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 | |
451 | f->has_error = 1; | |
452 | f->buf_index = 0; | |
453 | } | |
454 | } | |
455 | ||
456 | static void qemu_fill_buffer(QEMUFile *f) | |
457 | { | |
458 | int len; | |
459 | ||
460 | if (!f->get_buffer) | |
461 | return; | |
462 | ||
463 | if (f->is_write) | |
464 | abort(); | |
465 | ||
466 | len = f->get_buffer(f->opaque, f->buf, f->buf_offset, IO_BUF_SIZE); | |
467 | if (len > 0) { | |
468 | f->buf_index = 0; | |
469 | f->buf_size = len; | |
470 | f->buf_offset += len; | |
471 | } else if (len != -EAGAIN) | |
472 | f->has_error = 1; | |
473 | } | |
474 | ||
475 | int qemu_fclose(QEMUFile *f) | |
476 | { | |
477 | int ret = 0; | |
478 | qemu_fflush(f); | |
479 | if (f->close) | |
480 | ret = f->close(f->opaque); | |
481 | qemu_free(f); | |
482 | return ret; | |
483 | } | |
484 | ||
485 | void qemu_file_put_notify(QEMUFile *f) | |
486 | { | |
487 | f->put_buffer(f->opaque, NULL, 0, 0); | |
488 | } | |
489 | ||
490 | void qemu_put_buffer(QEMUFile *f, const uint8_t *buf, int size) | |
491 | { | |
492 | int l; | |
493 | ||
494 | if (!f->has_error && f->is_write == 0 && f->buf_index > 0) { | |
495 | fprintf(stderr, | |
496 | "Attempted to write to buffer while read buffer is not empty\n"); | |
497 | abort(); | |
498 | } | |
499 | ||
500 | while (!f->has_error && size > 0) { | |
501 | l = IO_BUF_SIZE - f->buf_index; | |
502 | if (l > size) | |
503 | l = size; | |
504 | memcpy(f->buf + f->buf_index, buf, l); | |
505 | f->is_write = 1; | |
506 | f->buf_index += l; | |
507 | buf += l; | |
508 | size -= l; | |
509 | if (f->buf_index >= IO_BUF_SIZE) | |
510 | qemu_fflush(f); | |
511 | } | |
512 | } | |
513 | ||
514 | void qemu_put_byte(QEMUFile *f, int v) | |
515 | { | |
516 | if (!f->has_error && f->is_write == 0 && f->buf_index > 0) { | |
517 | fprintf(stderr, | |
518 | "Attempted to write to buffer while read buffer is not empty\n"); | |
519 | abort(); | |
520 | } | |
521 | ||
522 | f->buf[f->buf_index++] = v; | |
523 | f->is_write = 1; | |
524 | if (f->buf_index >= IO_BUF_SIZE) | |
525 | qemu_fflush(f); | |
526 | } | |
527 | ||
528 | int qemu_get_buffer(QEMUFile *f, uint8_t *buf, int size1) | |
529 | { | |
530 | int size, l; | |
531 | ||
532 | if (f->is_write) | |
533 | abort(); | |
534 | ||
535 | size = size1; | |
536 | while (size > 0) { | |
537 | l = f->buf_size - f->buf_index; | |
538 | if (l == 0) { | |
539 | qemu_fill_buffer(f); | |
540 | l = f->buf_size - f->buf_index; | |
541 | if (l == 0) | |
542 | break; | |
543 | } | |
544 | if (l > size) | |
545 | l = size; | |
546 | memcpy(buf, f->buf + f->buf_index, l); | |
547 | f->buf_index += l; | |
548 | buf += l; | |
549 | size -= l; | |
550 | } | |
551 | return size1 - size; | |
552 | } | |
553 | ||
554 | int qemu_get_byte(QEMUFile *f) | |
555 | { | |
556 | if (f->is_write) | |
557 | abort(); | |
558 | ||
559 | if (f->buf_index >= f->buf_size) { | |
560 | qemu_fill_buffer(f); | |
561 | if (f->buf_index >= f->buf_size) | |
562 | return 0; | |
563 | } | |
564 | return f->buf[f->buf_index++]; | |
565 | } | |
566 | ||
567 | int64_t qemu_ftell(QEMUFile *f) | |
568 | { | |
569 | return f->buf_offset - f->buf_size + f->buf_index; | |
570 | } | |
571 | ||
572 | int64_t qemu_fseek(QEMUFile *f, int64_t pos, int whence) | |
573 | { | |
574 | if (whence == SEEK_SET) { | |
575 | /* nothing to do */ | |
576 | } else if (whence == SEEK_CUR) { | |
577 | pos += qemu_ftell(f); | |
578 | } else { | |
579 | /* SEEK_END not supported */ | |
580 | return -1; | |
581 | } | |
582 | if (f->put_buffer) { | |
583 | qemu_fflush(f); | |
584 | f->buf_offset = pos; | |
585 | } else { | |
586 | f->buf_offset = pos; | |
587 | f->buf_index = 0; | |
588 | f->buf_size = 0; | |
589 | } | |
590 | return pos; | |
591 | } | |
592 | ||
593 | int qemu_file_rate_limit(QEMUFile *f) | |
594 | { | |
595 | if (f->rate_limit) | |
596 | return f->rate_limit(f->opaque); | |
597 | ||
598 | return 0; | |
599 | } | |
600 | ||
19629537 GC |
601 | size_t qemu_file_set_rate_limit(QEMUFile *f, size_t new_rate) |
602 | { | |
0bb05eaf GC |
603 | /* any failed or completed migration keeps its state to allow probing of |
604 | * migration data, but has no associated file anymore */ | |
605 | if (f && f->set_rate_limit) | |
19629537 GC |
606 | return f->set_rate_limit(f->opaque, new_rate); |
607 | ||
608 | return 0; | |
609 | } | |
610 | ||
a672b469 AL |
611 | void qemu_put_be16(QEMUFile *f, unsigned int v) |
612 | { | |
613 | qemu_put_byte(f, v >> 8); | |
614 | qemu_put_byte(f, v); | |
615 | } | |
616 | ||
617 | void qemu_put_be32(QEMUFile *f, unsigned int v) | |
618 | { | |
619 | qemu_put_byte(f, v >> 24); | |
620 | qemu_put_byte(f, v >> 16); | |
621 | qemu_put_byte(f, v >> 8); | |
622 | qemu_put_byte(f, v); | |
623 | } | |
624 | ||
625 | void qemu_put_be64(QEMUFile *f, uint64_t v) | |
626 | { | |
627 | qemu_put_be32(f, v >> 32); | |
628 | qemu_put_be32(f, v); | |
629 | } | |
630 | ||
631 | unsigned int qemu_get_be16(QEMUFile *f) | |
632 | { | |
633 | unsigned int v; | |
634 | v = qemu_get_byte(f) << 8; | |
635 | v |= qemu_get_byte(f); | |
636 | return v; | |
637 | } | |
638 | ||
639 | unsigned int qemu_get_be32(QEMUFile *f) | |
640 | { | |
641 | unsigned int v; | |
642 | v = qemu_get_byte(f) << 24; | |
643 | v |= qemu_get_byte(f) << 16; | |
644 | v |= qemu_get_byte(f) << 8; | |
645 | v |= qemu_get_byte(f); | |
646 | return v; | |
647 | } | |
648 | ||
649 | uint64_t qemu_get_be64(QEMUFile *f) | |
650 | { | |
651 | uint64_t v; | |
652 | v = (uint64_t)qemu_get_be32(f) << 32; | |
653 | v |= qemu_get_be32(f); | |
654 | return v; | |
655 | } | |
656 | ||
9ed7d6ae JQ |
657 | /* 8 bit int */ |
658 | ||
659 | static int get_int8(QEMUFile *f, void *pv, size_t size) | |
660 | { | |
661 | int8_t *v = pv; | |
662 | qemu_get_s8s(f, v); | |
663 | return 0; | |
664 | } | |
665 | ||
84e2e3eb | 666 | static void put_int8(QEMUFile *f, void *pv, size_t size) |
9ed7d6ae | 667 | { |
84e2e3eb | 668 | int8_t *v = pv; |
9ed7d6ae JQ |
669 | qemu_put_s8s(f, v); |
670 | } | |
671 | ||
672 | const VMStateInfo vmstate_info_int8 = { | |
673 | .name = "int8", | |
674 | .get = get_int8, | |
675 | .put = put_int8, | |
676 | }; | |
677 | ||
678 | /* 16 bit int */ | |
679 | ||
680 | static int get_int16(QEMUFile *f, void *pv, size_t size) | |
681 | { | |
682 | int16_t *v = pv; | |
683 | qemu_get_sbe16s(f, v); | |
684 | return 0; | |
685 | } | |
686 | ||
84e2e3eb | 687 | static void put_int16(QEMUFile *f, void *pv, size_t size) |
9ed7d6ae | 688 | { |
84e2e3eb | 689 | int16_t *v = pv; |
9ed7d6ae JQ |
690 | qemu_put_sbe16s(f, v); |
691 | } | |
692 | ||
693 | const VMStateInfo vmstate_info_int16 = { | |
694 | .name = "int16", | |
695 | .get = get_int16, | |
696 | .put = put_int16, | |
697 | }; | |
698 | ||
699 | /* 32 bit int */ | |
700 | ||
701 | static int get_int32(QEMUFile *f, void *pv, size_t size) | |
702 | { | |
703 | int32_t *v = pv; | |
704 | qemu_get_sbe32s(f, v); | |
705 | return 0; | |
706 | } | |
707 | ||
84e2e3eb | 708 | static void put_int32(QEMUFile *f, void *pv, size_t size) |
9ed7d6ae | 709 | { |
84e2e3eb | 710 | int32_t *v = pv; |
9ed7d6ae JQ |
711 | qemu_put_sbe32s(f, v); |
712 | } | |
713 | ||
714 | const VMStateInfo vmstate_info_int32 = { | |
715 | .name = "int32", | |
716 | .get = get_int32, | |
717 | .put = put_int32, | |
718 | }; | |
719 | ||
82501660 JQ |
720 | /* 32 bit int. See that the received value is the same than the one |
721 | in the field */ | |
722 | ||
723 | static int get_int32_equal(QEMUFile *f, void *pv, size_t size) | |
724 | { | |
725 | int32_t *v = pv; | |
726 | int32_t v2; | |
727 | qemu_get_sbe32s(f, &v2); | |
728 | ||
729 | if (*v == v2) | |
730 | return 0; | |
731 | return -EINVAL; | |
732 | } | |
733 | ||
734 | const VMStateInfo vmstate_info_int32_equal = { | |
735 | .name = "int32 equal", | |
736 | .get = get_int32_equal, | |
737 | .put = put_int32, | |
738 | }; | |
739 | ||
0a031e0a JQ |
740 | /* 32 bit int. See that the received value is the less or the same |
741 | than the one in the field */ | |
742 | ||
743 | static int get_int32_le(QEMUFile *f, void *pv, size_t size) | |
744 | { | |
745 | int32_t *old = pv; | |
746 | int32_t new; | |
747 | qemu_get_sbe32s(f, &new); | |
748 | ||
749 | if (*old <= new) | |
750 | return 0; | |
751 | return -EINVAL; | |
752 | } | |
753 | ||
754 | const VMStateInfo vmstate_info_int32_le = { | |
755 | .name = "int32 equal", | |
756 | .get = get_int32_le, | |
757 | .put = put_int32, | |
758 | }; | |
759 | ||
9ed7d6ae JQ |
760 | /* 64 bit int */ |
761 | ||
762 | static int get_int64(QEMUFile *f, void *pv, size_t size) | |
763 | { | |
764 | int64_t *v = pv; | |
765 | qemu_get_sbe64s(f, v); | |
766 | return 0; | |
767 | } | |
768 | ||
84e2e3eb | 769 | static void put_int64(QEMUFile *f, void *pv, size_t size) |
9ed7d6ae | 770 | { |
84e2e3eb | 771 | int64_t *v = pv; |
9ed7d6ae JQ |
772 | qemu_put_sbe64s(f, v); |
773 | } | |
774 | ||
775 | const VMStateInfo vmstate_info_int64 = { | |
776 | .name = "int64", | |
777 | .get = get_int64, | |
778 | .put = put_int64, | |
779 | }; | |
780 | ||
781 | /* 8 bit unsigned int */ | |
782 | ||
783 | static int get_uint8(QEMUFile *f, void *pv, size_t size) | |
784 | { | |
785 | uint8_t *v = pv; | |
786 | qemu_get_8s(f, v); | |
787 | return 0; | |
788 | } | |
789 | ||
84e2e3eb | 790 | static void put_uint8(QEMUFile *f, void *pv, size_t size) |
9ed7d6ae | 791 | { |
84e2e3eb | 792 | uint8_t *v = pv; |
9ed7d6ae JQ |
793 | qemu_put_8s(f, v); |
794 | } | |
795 | ||
796 | const VMStateInfo vmstate_info_uint8 = { | |
797 | .name = "uint8", | |
798 | .get = get_uint8, | |
799 | .put = put_uint8, | |
800 | }; | |
801 | ||
802 | /* 16 bit unsigned int */ | |
803 | ||
804 | static int get_uint16(QEMUFile *f, void *pv, size_t size) | |
805 | { | |
806 | uint16_t *v = pv; | |
807 | qemu_get_be16s(f, v); | |
808 | return 0; | |
809 | } | |
810 | ||
84e2e3eb | 811 | static void put_uint16(QEMUFile *f, void *pv, size_t size) |
9ed7d6ae | 812 | { |
84e2e3eb | 813 | uint16_t *v = pv; |
9ed7d6ae JQ |
814 | qemu_put_be16s(f, v); |
815 | } | |
816 | ||
817 | const VMStateInfo vmstate_info_uint16 = { | |
818 | .name = "uint16", | |
819 | .get = get_uint16, | |
820 | .put = put_uint16, | |
821 | }; | |
822 | ||
823 | /* 32 bit unsigned int */ | |
824 | ||
825 | static int get_uint32(QEMUFile *f, void *pv, size_t size) | |
826 | { | |
827 | uint32_t *v = pv; | |
828 | qemu_get_be32s(f, v); | |
829 | return 0; | |
830 | } | |
831 | ||
84e2e3eb | 832 | static void put_uint32(QEMUFile *f, void *pv, size_t size) |
9ed7d6ae | 833 | { |
84e2e3eb | 834 | uint32_t *v = pv; |
9ed7d6ae JQ |
835 | qemu_put_be32s(f, v); |
836 | } | |
837 | ||
838 | const VMStateInfo vmstate_info_uint32 = { | |
839 | .name = "uint32", | |
840 | .get = get_uint32, | |
841 | .put = put_uint32, | |
842 | }; | |
843 | ||
844 | /* 64 bit unsigned int */ | |
845 | ||
846 | static int get_uint64(QEMUFile *f, void *pv, size_t size) | |
847 | { | |
848 | uint64_t *v = pv; | |
849 | qemu_get_be64s(f, v); | |
850 | return 0; | |
851 | } | |
852 | ||
84e2e3eb | 853 | static void put_uint64(QEMUFile *f, void *pv, size_t size) |
9ed7d6ae | 854 | { |
84e2e3eb | 855 | uint64_t *v = pv; |
9ed7d6ae JQ |
856 | qemu_put_be64s(f, v); |
857 | } | |
858 | ||
859 | const VMStateInfo vmstate_info_uint64 = { | |
860 | .name = "uint64", | |
861 | .get = get_uint64, | |
862 | .put = put_uint64, | |
863 | }; | |
864 | ||
80cd83e7 JQ |
865 | /* 8 bit int. See that the received value is the same than the one |
866 | in the field */ | |
867 | ||
868 | static int get_uint8_equal(QEMUFile *f, void *pv, size_t size) | |
869 | { | |
870 | uint8_t *v = pv; | |
871 | uint8_t v2; | |
872 | qemu_get_8s(f, &v2); | |
873 | ||
874 | if (*v == v2) | |
875 | return 0; | |
876 | return -EINVAL; | |
877 | } | |
878 | ||
879 | const VMStateInfo vmstate_info_uint8_equal = { | |
aa1cce69 | 880 | .name = "uint8 equal", |
80cd83e7 JQ |
881 | .get = get_uint8_equal, |
882 | .put = put_uint8, | |
883 | }; | |
884 | ||
dc3b83a0 JQ |
885 | /* 16 bit unsigned int int. See that the received value is the same than the one |
886 | in the field */ | |
887 | ||
888 | static int get_uint16_equal(QEMUFile *f, void *pv, size_t size) | |
889 | { | |
890 | uint16_t *v = pv; | |
891 | uint16_t v2; | |
892 | qemu_get_be16s(f, &v2); | |
893 | ||
894 | if (*v == v2) | |
895 | return 0; | |
896 | return -EINVAL; | |
897 | } | |
898 | ||
899 | const VMStateInfo vmstate_info_uint16_equal = { | |
900 | .name = "uint16 equal", | |
901 | .get = get_uint16_equal, | |
902 | .put = put_uint16, | |
903 | }; | |
904 | ||
dde0463b JQ |
905 | /* timers */ |
906 | ||
907 | static int get_timer(QEMUFile *f, void *pv, size_t size) | |
908 | { | |
909 | QEMUTimer *v = pv; | |
910 | qemu_get_timer(f, v); | |
911 | return 0; | |
912 | } | |
913 | ||
84e2e3eb | 914 | static void put_timer(QEMUFile *f, void *pv, size_t size) |
dde0463b | 915 | { |
84e2e3eb | 916 | QEMUTimer *v = pv; |
dde0463b JQ |
917 | qemu_put_timer(f, v); |
918 | } | |
919 | ||
920 | const VMStateInfo vmstate_info_timer = { | |
921 | .name = "timer", | |
922 | .get = get_timer, | |
923 | .put = put_timer, | |
924 | }; | |
925 | ||
6f67c50f JQ |
926 | /* uint8_t buffers */ |
927 | ||
928 | static int get_buffer(QEMUFile *f, void *pv, size_t size) | |
929 | { | |
930 | uint8_t *v = pv; | |
931 | qemu_get_buffer(f, v, size); | |
932 | return 0; | |
933 | } | |
934 | ||
84e2e3eb | 935 | static void put_buffer(QEMUFile *f, void *pv, size_t size) |
6f67c50f | 936 | { |
84e2e3eb | 937 | uint8_t *v = pv; |
6f67c50f JQ |
938 | qemu_put_buffer(f, v, size); |
939 | } | |
940 | ||
941 | const VMStateInfo vmstate_info_buffer = { | |
942 | .name = "buffer", | |
943 | .get = get_buffer, | |
944 | .put = put_buffer, | |
945 | }; | |
946 | ||
a672b469 | 947 | typedef struct SaveStateEntry { |
72cf2d4f | 948 | QTAILQ_ENTRY(SaveStateEntry) entry; |
a672b469 AL |
949 | char idstr[256]; |
950 | int instance_id; | |
951 | int version_id; | |
952 | int section_id; | |
953 | SaveLiveStateHandler *save_live_state; | |
954 | SaveStateHandler *save_state; | |
955 | LoadStateHandler *load_state; | |
9ed7d6ae | 956 | const VMStateDescription *vmsd; |
a672b469 | 957 | void *opaque; |
a672b469 AL |
958 | } SaveStateEntry; |
959 | ||
72cf2d4f BS |
960 | static QTAILQ_HEAD(savevm_handlers, SaveStateEntry) savevm_handlers = |
961 | QTAILQ_HEAD_INITIALIZER(savevm_handlers); | |
9ed7d6ae | 962 | static int global_section_id; |
a672b469 | 963 | |
8718e999 JQ |
964 | static int calculate_new_instance_id(const char *idstr) |
965 | { | |
966 | SaveStateEntry *se; | |
967 | int instance_id = 0; | |
968 | ||
72cf2d4f | 969 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
8718e999 JQ |
970 | if (strcmp(idstr, se->idstr) == 0 |
971 | && instance_id <= se->instance_id) { | |
972 | instance_id = se->instance_id + 1; | |
973 | } | |
974 | } | |
975 | return instance_id; | |
976 | } | |
977 | ||
a672b469 AL |
978 | /* TODO: Individual devices generally have very little idea about the rest |
979 | of the system, so instance_id should be removed/replaced. | |
980 | Meanwhile pass -1 as instance_id if you do not already have a clearly | |
981 | distinguishing id for all instances of your device class. */ | |
982 | int register_savevm_live(const char *idstr, | |
983 | int instance_id, | |
984 | int version_id, | |
985 | SaveLiveStateHandler *save_live_state, | |
986 | SaveStateHandler *save_state, | |
987 | LoadStateHandler *load_state, | |
988 | void *opaque) | |
989 | { | |
8718e999 | 990 | SaveStateEntry *se; |
a672b469 AL |
991 | |
992 | se = qemu_malloc(sizeof(SaveStateEntry)); | |
a672b469 | 993 | pstrcpy(se->idstr, sizeof(se->idstr), idstr); |
a672b469 AL |
994 | se->version_id = version_id; |
995 | se->section_id = global_section_id++; | |
996 | se->save_live_state = save_live_state; | |
997 | se->save_state = save_state; | |
998 | se->load_state = load_state; | |
999 | se->opaque = opaque; | |
9ed7d6ae | 1000 | se->vmsd = NULL; |
a672b469 | 1001 | |
8718e999 JQ |
1002 | if (instance_id == -1) { |
1003 | se->instance_id = calculate_new_instance_id(idstr); | |
1004 | } else { | |
1005 | se->instance_id = instance_id; | |
a672b469 | 1006 | } |
8718e999 | 1007 | /* add at the end of list */ |
72cf2d4f | 1008 | QTAILQ_INSERT_TAIL(&savevm_handlers, se, entry); |
a672b469 AL |
1009 | return 0; |
1010 | } | |
1011 | ||
1012 | int register_savevm(const char *idstr, | |
1013 | int instance_id, | |
1014 | int version_id, | |
1015 | SaveStateHandler *save_state, | |
1016 | LoadStateHandler *load_state, | |
1017 | void *opaque) | |
1018 | { | |
1019 | return register_savevm_live(idstr, instance_id, version_id, | |
1020 | NULL, save_state, load_state, opaque); | |
1021 | } | |
1022 | ||
41bd13af AL |
1023 | void unregister_savevm(const char *idstr, void *opaque) |
1024 | { | |
8718e999 | 1025 | SaveStateEntry *se, *new_se; |
41bd13af | 1026 | |
72cf2d4f | 1027 | QTAILQ_FOREACH_SAFE(se, &savevm_handlers, entry, new_se) { |
8718e999 | 1028 | if (strcmp(se->idstr, idstr) == 0 && se->opaque == opaque) { |
72cf2d4f | 1029 | QTAILQ_REMOVE(&savevm_handlers, se, entry); |
8718e999 | 1030 | qemu_free(se); |
41bd13af | 1031 | } |
41bd13af AL |
1032 | } |
1033 | } | |
1034 | ||
9ed7d6ae JQ |
1035 | int vmstate_register(int instance_id, const VMStateDescription *vmsd, |
1036 | void *opaque) | |
1037 | { | |
8718e999 | 1038 | SaveStateEntry *se; |
9ed7d6ae JQ |
1039 | |
1040 | se = qemu_malloc(sizeof(SaveStateEntry)); | |
1041 | pstrcpy(se->idstr, sizeof(se->idstr), vmsd->name); | |
9ed7d6ae JQ |
1042 | se->version_id = vmsd->version_id; |
1043 | se->section_id = global_section_id++; | |
1044 | se->save_live_state = NULL; | |
1045 | se->save_state = NULL; | |
1046 | se->load_state = NULL; | |
1047 | se->opaque = opaque; | |
1048 | se->vmsd = vmsd; | |
9ed7d6ae | 1049 | |
8718e999 JQ |
1050 | if (instance_id == -1) { |
1051 | se->instance_id = calculate_new_instance_id(vmsd->name); | |
1052 | } else { | |
1053 | se->instance_id = instance_id; | |
9ed7d6ae | 1054 | } |
8718e999 | 1055 | /* add at the end of list */ |
72cf2d4f | 1056 | QTAILQ_INSERT_TAIL(&savevm_handlers, se, entry); |
9ed7d6ae JQ |
1057 | return 0; |
1058 | } | |
1059 | ||
1eb7538b | 1060 | void vmstate_unregister(const VMStateDescription *vmsd, void *opaque) |
9ed7d6ae | 1061 | { |
1eb7538b JQ |
1062 | SaveStateEntry *se, *new_se; |
1063 | ||
72cf2d4f | 1064 | QTAILQ_FOREACH_SAFE(se, &savevm_handlers, entry, new_se) { |
1eb7538b | 1065 | if (se->vmsd == vmsd && se->opaque == opaque) { |
72cf2d4f | 1066 | QTAILQ_REMOVE(&savevm_handlers, se, entry); |
1eb7538b JQ |
1067 | qemu_free(se); |
1068 | } | |
1069 | } | |
9ed7d6ae JQ |
1070 | } |
1071 | ||
1072 | int vmstate_load_state(QEMUFile *f, const VMStateDescription *vmsd, | |
1073 | void *opaque, int version_id) | |
1074 | { | |
1075 | VMStateField *field = vmsd->fields; | |
1076 | ||
1077 | if (version_id > vmsd->version_id) { | |
1078 | return -EINVAL; | |
1079 | } | |
1080 | if (version_id < vmsd->minimum_version_id_old) { | |
1081 | return -EINVAL; | |
1082 | } | |
1083 | if (version_id < vmsd->minimum_version_id) { | |
1084 | return vmsd->load_state_old(f, opaque, version_id); | |
1085 | } | |
fd4d52de JQ |
1086 | if (vmsd->pre_load) { |
1087 | int ret = vmsd->pre_load(opaque); | |
1088 | if (ret) | |
1089 | return ret; | |
1090 | } | |
9ed7d6ae | 1091 | while(field->name) { |
f11f6a5f JQ |
1092 | if ((field->field_exists && |
1093 | field->field_exists(opaque, version_id)) || | |
1094 | (!field->field_exists && | |
1095 | field->version_id <= version_id)) { | |
f752a6aa JQ |
1096 | void *base_addr = opaque + field->offset; |
1097 | int ret, i, n_elems = 1; | |
9ed7d6ae | 1098 | |
f752a6aa JQ |
1099 | if (field->flags & VMS_ARRAY) { |
1100 | n_elems = field->num; | |
d6698281 JQ |
1101 | } else if (field->flags & VMS_VARRAY_INT32) { |
1102 | n_elems = *(int32_t *)(opaque+field->num_offset); | |
f752a6aa | 1103 | } |
dde0463b | 1104 | if (field->flags & VMS_POINTER) { |
f752a6aa | 1105 | base_addr = *(void **)base_addr; |
dde0463b | 1106 | } |
f752a6aa JQ |
1107 | for (i = 0; i < n_elems; i++) { |
1108 | void *addr = base_addr + field->size * i; | |
ec245e21 | 1109 | |
19df438b JQ |
1110 | if (field->flags & VMS_ARRAY_OF_POINTER) { |
1111 | addr = *(void **)addr; | |
1112 | } | |
ec245e21 | 1113 | if (field->flags & VMS_STRUCT) { |
fa3aad24 | 1114 | ret = vmstate_load_state(f, field->vmsd, addr, field->vmsd->version_id); |
ec245e21 JQ |
1115 | } else { |
1116 | ret = field->info->get(f, addr, field->size); | |
1117 | ||
1118 | } | |
f752a6aa JQ |
1119 | if (ret < 0) { |
1120 | return ret; | |
1121 | } | |
9ed7d6ae JQ |
1122 | } |
1123 | } | |
1124 | field++; | |
1125 | } | |
752ff2fa | 1126 | if (vmsd->post_load) { |
e59fb374 | 1127 | return vmsd->post_load(opaque, version_id); |
752ff2fa | 1128 | } |
9ed7d6ae JQ |
1129 | return 0; |
1130 | } | |
1131 | ||
1132 | void vmstate_save_state(QEMUFile *f, const VMStateDescription *vmsd, | |
84e2e3eb | 1133 | void *opaque) |
9ed7d6ae JQ |
1134 | { |
1135 | VMStateField *field = vmsd->fields; | |
1136 | ||
8fb0791d JQ |
1137 | if (vmsd->pre_save) { |
1138 | vmsd->pre_save(opaque); | |
1139 | } | |
9ed7d6ae | 1140 | while(field->name) { |
f11f6a5f JQ |
1141 | if (!field->field_exists || |
1142 | field->field_exists(opaque, vmsd->version_id)) { | |
1143 | void *base_addr = opaque + field->offset; | |
1144 | int i, n_elems = 1; | |
dde0463b | 1145 | |
f11f6a5f JQ |
1146 | if (field->flags & VMS_ARRAY) { |
1147 | n_elems = field->num; | |
d6698281 JQ |
1148 | } else if (field->flags & VMS_VARRAY_INT32) { |
1149 | n_elems = *(int32_t *)(opaque+field->num_offset); | |
f11f6a5f JQ |
1150 | } |
1151 | if (field->flags & VMS_POINTER) { | |
1152 | base_addr = *(void **)base_addr; | |
1153 | } | |
1154 | for (i = 0; i < n_elems; i++) { | |
1155 | void *addr = base_addr + field->size * i; | |
ec245e21 | 1156 | |
f11f6a5f JQ |
1157 | if (field->flags & VMS_STRUCT) { |
1158 | vmstate_save_state(f, field->vmsd, addr); | |
1159 | } else { | |
1160 | field->info->put(f, addr, field->size); | |
1161 | } | |
ec245e21 | 1162 | } |
dde0463b | 1163 | } |
9ed7d6ae JQ |
1164 | field++; |
1165 | } | |
8fb0791d JQ |
1166 | if (vmsd->post_save) { |
1167 | vmsd->post_save(opaque); | |
1168 | } | |
9ed7d6ae JQ |
1169 | } |
1170 | ||
4082be4d JQ |
1171 | static int vmstate_load(QEMUFile *f, SaveStateEntry *se, int version_id) |
1172 | { | |
9ed7d6ae JQ |
1173 | if (!se->vmsd) { /* Old style */ |
1174 | return se->load_state(f, se->opaque, version_id); | |
1175 | } | |
1176 | return vmstate_load_state(f, se->vmsd, se->opaque, version_id); | |
4082be4d JQ |
1177 | } |
1178 | ||
1179 | static void vmstate_save(QEMUFile *f, SaveStateEntry *se) | |
1180 | { | |
9ed7d6ae JQ |
1181 | if (!se->vmsd) { /* Old style */ |
1182 | se->save_state(f, se->opaque); | |
1183 | return; | |
1184 | } | |
1185 | vmstate_save_state(f,se->vmsd, se->opaque); | |
4082be4d JQ |
1186 | } |
1187 | ||
a672b469 AL |
1188 | #define QEMU_VM_FILE_MAGIC 0x5145564d |
1189 | #define QEMU_VM_FILE_VERSION_COMPAT 0x00000002 | |
1190 | #define QEMU_VM_FILE_VERSION 0x00000003 | |
1191 | ||
1192 | #define QEMU_VM_EOF 0x00 | |
1193 | #define QEMU_VM_SECTION_START 0x01 | |
1194 | #define QEMU_VM_SECTION_PART 0x02 | |
1195 | #define QEMU_VM_SECTION_END 0x03 | |
1196 | #define QEMU_VM_SECTION_FULL 0x04 | |
1197 | ||
1198 | int qemu_savevm_state_begin(QEMUFile *f) | |
1199 | { | |
1200 | SaveStateEntry *se; | |
1201 | ||
1202 | qemu_put_be32(f, QEMU_VM_FILE_MAGIC); | |
1203 | qemu_put_be32(f, QEMU_VM_FILE_VERSION); | |
1204 | ||
72cf2d4f | 1205 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
a672b469 AL |
1206 | int len; |
1207 | ||
1208 | if (se->save_live_state == NULL) | |
1209 | continue; | |
1210 | ||
1211 | /* Section type */ | |
1212 | qemu_put_byte(f, QEMU_VM_SECTION_START); | |
1213 | qemu_put_be32(f, se->section_id); | |
1214 | ||
1215 | /* ID string */ | |
1216 | len = strlen(se->idstr); | |
1217 | qemu_put_byte(f, len); | |
1218 | qemu_put_buffer(f, (uint8_t *)se->idstr, len); | |
1219 | ||
1220 | qemu_put_be32(f, se->instance_id); | |
1221 | qemu_put_be32(f, se->version_id); | |
1222 | ||
1223 | se->save_live_state(f, QEMU_VM_SECTION_START, se->opaque); | |
1224 | } | |
1225 | ||
1226 | if (qemu_file_has_error(f)) | |
1227 | return -EIO; | |
1228 | ||
1229 | return 0; | |
1230 | } | |
1231 | ||
1232 | int qemu_savevm_state_iterate(QEMUFile *f) | |
1233 | { | |
1234 | SaveStateEntry *se; | |
1235 | int ret = 1; | |
1236 | ||
72cf2d4f | 1237 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
a672b469 AL |
1238 | if (se->save_live_state == NULL) |
1239 | continue; | |
1240 | ||
1241 | /* Section type */ | |
1242 | qemu_put_byte(f, QEMU_VM_SECTION_PART); | |
1243 | qemu_put_be32(f, se->section_id); | |
1244 | ||
1245 | ret &= !!se->save_live_state(f, QEMU_VM_SECTION_PART, se->opaque); | |
1246 | } | |
1247 | ||
1248 | if (ret) | |
1249 | return 1; | |
1250 | ||
1251 | if (qemu_file_has_error(f)) | |
1252 | return -EIO; | |
1253 | ||
1254 | return 0; | |
1255 | } | |
1256 | ||
1257 | int qemu_savevm_state_complete(QEMUFile *f) | |
1258 | { | |
1259 | SaveStateEntry *se; | |
1260 | ||
72cf2d4f | 1261 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
a672b469 AL |
1262 | if (se->save_live_state == NULL) |
1263 | continue; | |
1264 | ||
1265 | /* Section type */ | |
1266 | qemu_put_byte(f, QEMU_VM_SECTION_END); | |
1267 | qemu_put_be32(f, se->section_id); | |
1268 | ||
1269 | se->save_live_state(f, QEMU_VM_SECTION_END, se->opaque); | |
1270 | } | |
1271 | ||
72cf2d4f | 1272 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
a672b469 AL |
1273 | int len; |
1274 | ||
9ed7d6ae | 1275 | if (se->save_state == NULL && se->vmsd == NULL) |
a672b469 AL |
1276 | continue; |
1277 | ||
1278 | /* Section type */ | |
1279 | qemu_put_byte(f, QEMU_VM_SECTION_FULL); | |
1280 | qemu_put_be32(f, se->section_id); | |
1281 | ||
1282 | /* ID string */ | |
1283 | len = strlen(se->idstr); | |
1284 | qemu_put_byte(f, len); | |
1285 | qemu_put_buffer(f, (uint8_t *)se->idstr, len); | |
1286 | ||
1287 | qemu_put_be32(f, se->instance_id); | |
1288 | qemu_put_be32(f, se->version_id); | |
1289 | ||
4082be4d | 1290 | vmstate_save(f, se); |
a672b469 AL |
1291 | } |
1292 | ||
1293 | qemu_put_byte(f, QEMU_VM_EOF); | |
1294 | ||
1295 | if (qemu_file_has_error(f)) | |
1296 | return -EIO; | |
1297 | ||
1298 | return 0; | |
1299 | } | |
1300 | ||
1301 | int qemu_savevm_state(QEMUFile *f) | |
1302 | { | |
1303 | int saved_vm_running; | |
1304 | int ret; | |
1305 | ||
1306 | saved_vm_running = vm_running; | |
1307 | vm_stop(0); | |
1308 | ||
1309 | bdrv_flush_all(); | |
1310 | ||
1311 | ret = qemu_savevm_state_begin(f); | |
1312 | if (ret < 0) | |
1313 | goto out; | |
1314 | ||
1315 | do { | |
1316 | ret = qemu_savevm_state_iterate(f); | |
1317 | if (ret < 0) | |
1318 | goto out; | |
1319 | } while (ret == 0); | |
1320 | ||
1321 | ret = qemu_savevm_state_complete(f); | |
1322 | ||
1323 | out: | |
1324 | if (qemu_file_has_error(f)) | |
1325 | ret = -EIO; | |
1326 | ||
1327 | if (!ret && saved_vm_running) | |
1328 | vm_start(); | |
1329 | ||
1330 | return ret; | |
1331 | } | |
1332 | ||
1333 | static SaveStateEntry *find_se(const char *idstr, int instance_id) | |
1334 | { | |
1335 | SaveStateEntry *se; | |
1336 | ||
72cf2d4f | 1337 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
a672b469 AL |
1338 | if (!strcmp(se->idstr, idstr) && |
1339 | instance_id == se->instance_id) | |
1340 | return se; | |
1341 | } | |
1342 | return NULL; | |
1343 | } | |
1344 | ||
1345 | typedef struct LoadStateEntry { | |
72cf2d4f | 1346 | QLIST_ENTRY(LoadStateEntry) entry; |
a672b469 AL |
1347 | SaveStateEntry *se; |
1348 | int section_id; | |
1349 | int version_id; | |
a672b469 AL |
1350 | } LoadStateEntry; |
1351 | ||
a672b469 AL |
1352 | int qemu_loadvm_state(QEMUFile *f) |
1353 | { | |
72cf2d4f BS |
1354 | QLIST_HEAD(, LoadStateEntry) loadvm_handlers = |
1355 | QLIST_HEAD_INITIALIZER(loadvm_handlers); | |
f4dbb8dd | 1356 | LoadStateEntry *le, *new_le; |
a672b469 AL |
1357 | uint8_t section_type; |
1358 | unsigned int v; | |
1359 | int ret; | |
1360 | ||
1361 | v = qemu_get_be32(f); | |
1362 | if (v != QEMU_VM_FILE_MAGIC) | |
1363 | return -EINVAL; | |
1364 | ||
1365 | v = qemu_get_be32(f); | |
bbfe1408 JQ |
1366 | if (v == QEMU_VM_FILE_VERSION_COMPAT) { |
1367 | fprintf(stderr, "SaveVM v2 format is obsolete and don't work anymore\n"); | |
1368 | return -ENOTSUP; | |
1369 | } | |
a672b469 AL |
1370 | if (v != QEMU_VM_FILE_VERSION) |
1371 | return -ENOTSUP; | |
1372 | ||
1373 | while ((section_type = qemu_get_byte(f)) != QEMU_VM_EOF) { | |
1374 | uint32_t instance_id, version_id, section_id; | |
a672b469 AL |
1375 | SaveStateEntry *se; |
1376 | char idstr[257]; | |
1377 | int len; | |
1378 | ||
1379 | switch (section_type) { | |
1380 | case QEMU_VM_SECTION_START: | |
1381 | case QEMU_VM_SECTION_FULL: | |
1382 | /* Read section start */ | |
1383 | section_id = qemu_get_be32(f); | |
1384 | len = qemu_get_byte(f); | |
1385 | qemu_get_buffer(f, (uint8_t *)idstr, len); | |
1386 | idstr[len] = 0; | |
1387 | instance_id = qemu_get_be32(f); | |
1388 | version_id = qemu_get_be32(f); | |
1389 | ||
1390 | /* Find savevm section */ | |
1391 | se = find_se(idstr, instance_id); | |
1392 | if (se == NULL) { | |
1393 | fprintf(stderr, "Unknown savevm section or instance '%s' %d\n", idstr, instance_id); | |
1394 | ret = -EINVAL; | |
1395 | goto out; | |
1396 | } | |
1397 | ||
1398 | /* Validate version */ | |
1399 | if (version_id > se->version_id) { | |
1400 | fprintf(stderr, "savevm: unsupported version %d for '%s' v%d\n", | |
1401 | version_id, idstr, se->version_id); | |
1402 | ret = -EINVAL; | |
1403 | goto out; | |
1404 | } | |
1405 | ||
1406 | /* Add entry */ | |
1407 | le = qemu_mallocz(sizeof(*le)); | |
a672b469 AL |
1408 | |
1409 | le->se = se; | |
1410 | le->section_id = section_id; | |
1411 | le->version_id = version_id; | |
72cf2d4f | 1412 | QLIST_INSERT_HEAD(&loadvm_handlers, le, entry); |
a672b469 | 1413 | |
4082be4d | 1414 | ret = vmstate_load(f, le->se, le->version_id); |
b5a22e4a JQ |
1415 | if (ret < 0) { |
1416 | fprintf(stderr, "qemu: warning: error while loading state for instance 0x%x of device '%s'\n", | |
1417 | instance_id, idstr); | |
1418 | goto out; | |
1419 | } | |
a672b469 AL |
1420 | break; |
1421 | case QEMU_VM_SECTION_PART: | |
1422 | case QEMU_VM_SECTION_END: | |
1423 | section_id = qemu_get_be32(f); | |
1424 | ||
72cf2d4f | 1425 | QLIST_FOREACH(le, &loadvm_handlers, entry) { |
f4dbb8dd JQ |
1426 | if (le->section_id == section_id) { |
1427 | break; | |
1428 | } | |
1429 | } | |
a672b469 AL |
1430 | if (le == NULL) { |
1431 | fprintf(stderr, "Unknown savevm section %d\n", section_id); | |
1432 | ret = -EINVAL; | |
1433 | goto out; | |
1434 | } | |
1435 | ||
4082be4d | 1436 | ret = vmstate_load(f, le->se, le->version_id); |
b5a22e4a JQ |
1437 | if (ret < 0) { |
1438 | fprintf(stderr, "qemu: warning: error while loading state section id %d\n", | |
1439 | section_id); | |
1440 | goto out; | |
1441 | } | |
a672b469 AL |
1442 | break; |
1443 | default: | |
1444 | fprintf(stderr, "Unknown savevm section type %d\n", section_type); | |
1445 | ret = -EINVAL; | |
1446 | goto out; | |
1447 | } | |
1448 | } | |
1449 | ||
1450 | ret = 0; | |
1451 | ||
1452 | out: | |
72cf2d4f BS |
1453 | QLIST_FOREACH_SAFE(le, &loadvm_handlers, entry, new_le) { |
1454 | QLIST_REMOVE(le, entry); | |
a672b469 AL |
1455 | qemu_free(le); |
1456 | } | |
1457 | ||
1458 | if (qemu_file_has_error(f)) | |
1459 | ret = -EIO; | |
1460 | ||
1461 | return ret; | |
1462 | } | |
1463 | ||
1464 | /* device can contain snapshots */ | |
1465 | static int bdrv_can_snapshot(BlockDriverState *bs) | |
1466 | { | |
1467 | return (bs && | |
1468 | !bdrv_is_removable(bs) && | |
1469 | !bdrv_is_read_only(bs)); | |
1470 | } | |
1471 | ||
1472 | /* device must be snapshots in order to have a reliable snapshot */ | |
1473 | static int bdrv_has_snapshot(BlockDriverState *bs) | |
1474 | { | |
1475 | return (bs && | |
1476 | !bdrv_is_removable(bs) && | |
1477 | !bdrv_is_read_only(bs)); | |
1478 | } | |
1479 | ||
1480 | static BlockDriverState *get_bs_snapshots(void) | |
1481 | { | |
1482 | BlockDriverState *bs; | |
751c6a17 | 1483 | DriveInfo *dinfo; |
a672b469 AL |
1484 | |
1485 | if (bs_snapshots) | |
1486 | return bs_snapshots; | |
72cf2d4f | 1487 | QTAILQ_FOREACH(dinfo, &drives, next) { |
751c6a17 | 1488 | bs = dinfo->bdrv; |
a672b469 AL |
1489 | if (bdrv_can_snapshot(bs)) |
1490 | goto ok; | |
1491 | } | |
1492 | return NULL; | |
1493 | ok: | |
1494 | bs_snapshots = bs; | |
1495 | return bs; | |
1496 | } | |
1497 | ||
1498 | static int bdrv_snapshot_find(BlockDriverState *bs, QEMUSnapshotInfo *sn_info, | |
1499 | const char *name) | |
1500 | { | |
1501 | QEMUSnapshotInfo *sn_tab, *sn; | |
1502 | int nb_sns, i, ret; | |
1503 | ||
1504 | ret = -ENOENT; | |
1505 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
1506 | if (nb_sns < 0) | |
1507 | return ret; | |
1508 | for(i = 0; i < nb_sns; i++) { | |
1509 | sn = &sn_tab[i]; | |
1510 | if (!strcmp(sn->id_str, name) || !strcmp(sn->name, name)) { | |
1511 | *sn_info = *sn; | |
1512 | ret = 0; | |
1513 | break; | |
1514 | } | |
1515 | } | |
1516 | qemu_free(sn_tab); | |
1517 | return ret; | |
1518 | } | |
1519 | ||
d54908a5 | 1520 | void do_savevm(Monitor *mon, const QDict *qdict) |
a672b469 | 1521 | { |
751c6a17 | 1522 | DriveInfo *dinfo; |
a672b469 AL |
1523 | BlockDriverState *bs, *bs1; |
1524 | QEMUSnapshotInfo sn1, *sn = &sn1, old_sn1, *old_sn = &old_sn1; | |
751c6a17 | 1525 | int must_delete, ret; |
a672b469 AL |
1526 | QEMUFile *f; |
1527 | int saved_vm_running; | |
2d22b18f | 1528 | uint32_t vm_state_size; |
a672b469 AL |
1529 | #ifdef _WIN32 |
1530 | struct _timeb tb; | |
1531 | #else | |
1532 | struct timeval tv; | |
1533 | #endif | |
d54908a5 | 1534 | const char *name = qdict_get_try_str(qdict, "name"); |
a672b469 AL |
1535 | |
1536 | bs = get_bs_snapshots(); | |
1537 | if (!bs) { | |
376253ec | 1538 | monitor_printf(mon, "No block device can accept snapshots\n"); |
a672b469 AL |
1539 | return; |
1540 | } | |
1541 | ||
1542 | /* ??? Should this occur after vm_stop? */ | |
1543 | qemu_aio_flush(); | |
1544 | ||
1545 | saved_vm_running = vm_running; | |
1546 | vm_stop(0); | |
1547 | ||
1548 | must_delete = 0; | |
1549 | if (name) { | |
1550 | ret = bdrv_snapshot_find(bs, old_sn, name); | |
1551 | if (ret >= 0) { | |
1552 | must_delete = 1; | |
1553 | } | |
1554 | } | |
1555 | memset(sn, 0, sizeof(*sn)); | |
1556 | if (must_delete) { | |
1557 | pstrcpy(sn->name, sizeof(sn->name), old_sn->name); | |
1558 | pstrcpy(sn->id_str, sizeof(sn->id_str), old_sn->id_str); | |
1559 | } else { | |
1560 | if (name) | |
1561 | pstrcpy(sn->name, sizeof(sn->name), name); | |
1562 | } | |
1563 | ||
1564 | /* fill auxiliary fields */ | |
1565 | #ifdef _WIN32 | |
1566 | _ftime(&tb); | |
1567 | sn->date_sec = tb.time; | |
1568 | sn->date_nsec = tb.millitm * 1000000; | |
1569 | #else | |
1570 | gettimeofday(&tv, NULL); | |
1571 | sn->date_sec = tv.tv_sec; | |
1572 | sn->date_nsec = tv.tv_usec * 1000; | |
1573 | #endif | |
1574 | sn->vm_clock_nsec = qemu_get_clock(vm_clock); | |
1575 | ||
a672b469 | 1576 | /* save the VM state */ |
45566e9c | 1577 | f = qemu_fopen_bdrv(bs, 1); |
a672b469 | 1578 | if (!f) { |
376253ec | 1579 | monitor_printf(mon, "Could not open VM state file\n"); |
a672b469 AL |
1580 | goto the_end; |
1581 | } | |
1582 | ret = qemu_savevm_state(f); | |
2d22b18f | 1583 | vm_state_size = qemu_ftell(f); |
a672b469 AL |
1584 | qemu_fclose(f); |
1585 | if (ret < 0) { | |
376253ec | 1586 | monitor_printf(mon, "Error %d while writing VM\n", ret); |
a672b469 AL |
1587 | goto the_end; |
1588 | } | |
1589 | ||
1590 | /* create the snapshots */ | |
1591 | ||
72cf2d4f | 1592 | QTAILQ_FOREACH(dinfo, &drives, next) { |
751c6a17 | 1593 | bs1 = dinfo->bdrv; |
a672b469 AL |
1594 | if (bdrv_has_snapshot(bs1)) { |
1595 | if (must_delete) { | |
1596 | ret = bdrv_snapshot_delete(bs1, old_sn->id_str); | |
1597 | if (ret < 0) { | |
376253ec AL |
1598 | monitor_printf(mon, |
1599 | "Error while deleting snapshot on '%s'\n", | |
1600 | bdrv_get_device_name(bs1)); | |
a672b469 AL |
1601 | } |
1602 | } | |
2d22b18f AL |
1603 | /* Write VM state size only to the image that contains the state */ |
1604 | sn->vm_state_size = (bs == bs1 ? vm_state_size : 0); | |
a672b469 AL |
1605 | ret = bdrv_snapshot_create(bs1, sn); |
1606 | if (ret < 0) { | |
376253ec AL |
1607 | monitor_printf(mon, "Error while creating snapshot on '%s'\n", |
1608 | bdrv_get_device_name(bs1)); | |
a672b469 AL |
1609 | } |
1610 | } | |
1611 | } | |
1612 | ||
1613 | the_end: | |
1614 | if (saved_vm_running) | |
1615 | vm_start(); | |
1616 | } | |
1617 | ||
05f2401e | 1618 | int load_vmstate(Monitor *mon, const char *name) |
a672b469 | 1619 | { |
751c6a17 | 1620 | DriveInfo *dinfo; |
a672b469 | 1621 | BlockDriverState *bs, *bs1; |
2d22b18f | 1622 | QEMUSnapshotInfo sn; |
a672b469 | 1623 | QEMUFile *f; |
751c6a17 | 1624 | int ret; |
a672b469 AL |
1625 | |
1626 | bs = get_bs_snapshots(); | |
1627 | if (!bs) { | |
376253ec | 1628 | monitor_printf(mon, "No block device supports snapshots\n"); |
05f2401e | 1629 | return -EINVAL; |
a672b469 AL |
1630 | } |
1631 | ||
1632 | /* Flush all IO requests so they don't interfere with the new state. */ | |
1633 | qemu_aio_flush(); | |
1634 | ||
72cf2d4f | 1635 | QTAILQ_FOREACH(dinfo, &drives, next) { |
751c6a17 | 1636 | bs1 = dinfo->bdrv; |
a672b469 AL |
1637 | if (bdrv_has_snapshot(bs1)) { |
1638 | ret = bdrv_snapshot_goto(bs1, name); | |
1639 | if (ret < 0) { | |
1640 | if (bs != bs1) | |
376253ec | 1641 | monitor_printf(mon, "Warning: "); |
a672b469 AL |
1642 | switch(ret) { |
1643 | case -ENOTSUP: | |
376253ec AL |
1644 | monitor_printf(mon, |
1645 | "Snapshots not supported on device '%s'\n", | |
1646 | bdrv_get_device_name(bs1)); | |
a672b469 AL |
1647 | break; |
1648 | case -ENOENT: | |
376253ec AL |
1649 | monitor_printf(mon, "Could not find snapshot '%s' on " |
1650 | "device '%s'\n", | |
1651 | name, bdrv_get_device_name(bs1)); | |
a672b469 AL |
1652 | break; |
1653 | default: | |
376253ec AL |
1654 | monitor_printf(mon, "Error %d while activating snapshot on" |
1655 | " '%s'\n", ret, bdrv_get_device_name(bs1)); | |
a672b469 AL |
1656 | break; |
1657 | } | |
1658 | /* fatal on snapshot block device */ | |
1659 | if (bs == bs1) | |
05f2401e | 1660 | return 0; |
a672b469 AL |
1661 | } |
1662 | } | |
1663 | } | |
1664 | ||
2d22b18f AL |
1665 | /* Don't even try to load empty VM states */ |
1666 | ret = bdrv_snapshot_find(bs, &sn, name); | |
1667 | if ((ret >= 0) && (sn.vm_state_size == 0)) | |
05f2401e | 1668 | return -EINVAL; |
2d22b18f | 1669 | |
a672b469 | 1670 | /* restore the VM state */ |
45566e9c | 1671 | f = qemu_fopen_bdrv(bs, 0); |
a672b469 | 1672 | if (!f) { |
376253ec | 1673 | monitor_printf(mon, "Could not open VM state file\n"); |
05f2401e | 1674 | return -EINVAL; |
a672b469 AL |
1675 | } |
1676 | ret = qemu_loadvm_state(f); | |
1677 | qemu_fclose(f); | |
1678 | if (ret < 0) { | |
376253ec | 1679 | monitor_printf(mon, "Error %d while loading VM state\n", ret); |
05f2401e | 1680 | return ret; |
a672b469 | 1681 | } |
05f2401e | 1682 | return 0; |
7b630349 JQ |
1683 | } |
1684 | ||
d54908a5 | 1685 | void do_delvm(Monitor *mon, const QDict *qdict) |
a672b469 | 1686 | { |
751c6a17 | 1687 | DriveInfo *dinfo; |
a672b469 | 1688 | BlockDriverState *bs, *bs1; |
751c6a17 | 1689 | int ret; |
d54908a5 | 1690 | const char *name = qdict_get_str(qdict, "name"); |
a672b469 AL |
1691 | |
1692 | bs = get_bs_snapshots(); | |
1693 | if (!bs) { | |
376253ec | 1694 | monitor_printf(mon, "No block device supports snapshots\n"); |
a672b469 AL |
1695 | return; |
1696 | } | |
1697 | ||
72cf2d4f | 1698 | QTAILQ_FOREACH(dinfo, &drives, next) { |
751c6a17 | 1699 | bs1 = dinfo->bdrv; |
a672b469 AL |
1700 | if (bdrv_has_snapshot(bs1)) { |
1701 | ret = bdrv_snapshot_delete(bs1, name); | |
1702 | if (ret < 0) { | |
1703 | if (ret == -ENOTSUP) | |
376253ec AL |
1704 | monitor_printf(mon, |
1705 | "Snapshots not supported on device '%s'\n", | |
1706 | bdrv_get_device_name(bs1)); | |
a672b469 | 1707 | else |
376253ec AL |
1708 | monitor_printf(mon, "Error %d while deleting snapshot on " |
1709 | "'%s'\n", ret, bdrv_get_device_name(bs1)); | |
a672b469 AL |
1710 | } |
1711 | } | |
1712 | } | |
1713 | } | |
1714 | ||
376253ec | 1715 | void do_info_snapshots(Monitor *mon) |
a672b469 | 1716 | { |
751c6a17 | 1717 | DriveInfo *dinfo; |
a672b469 AL |
1718 | BlockDriverState *bs, *bs1; |
1719 | QEMUSnapshotInfo *sn_tab, *sn; | |
1720 | int nb_sns, i; | |
1721 | char buf[256]; | |
1722 | ||
1723 | bs = get_bs_snapshots(); | |
1724 | if (!bs) { | |
376253ec | 1725 | monitor_printf(mon, "No available block device supports snapshots\n"); |
a672b469 AL |
1726 | return; |
1727 | } | |
376253ec | 1728 | monitor_printf(mon, "Snapshot devices:"); |
72cf2d4f | 1729 | QTAILQ_FOREACH(dinfo, &drives, next) { |
751c6a17 | 1730 | bs1 = dinfo->bdrv; |
a672b469 AL |
1731 | if (bdrv_has_snapshot(bs1)) { |
1732 | if (bs == bs1) | |
376253ec | 1733 | monitor_printf(mon, " %s", bdrv_get_device_name(bs1)); |
a672b469 AL |
1734 | } |
1735 | } | |
376253ec | 1736 | monitor_printf(mon, "\n"); |
a672b469 AL |
1737 | |
1738 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
1739 | if (nb_sns < 0) { | |
376253ec | 1740 | monitor_printf(mon, "bdrv_snapshot_list: error %d\n", nb_sns); |
a672b469 AL |
1741 | return; |
1742 | } | |
376253ec AL |
1743 | monitor_printf(mon, "Snapshot list (from %s):\n", |
1744 | bdrv_get_device_name(bs)); | |
1745 | monitor_printf(mon, "%s\n", bdrv_snapshot_dump(buf, sizeof(buf), NULL)); | |
a672b469 AL |
1746 | for(i = 0; i < nb_sns; i++) { |
1747 | sn = &sn_tab[i]; | |
376253ec | 1748 | monitor_printf(mon, "%s\n", bdrv_snapshot_dump(buf, sizeof(buf), sn)); |
a672b469 AL |
1749 | } |
1750 | qemu_free(sn_tab); | |
1751 | } |