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Commit | Line | Data |
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ea2384d3 | 1 | /* |
fb43f4dd | 2 | * QEMU disk image utility |
5fafdf24 | 3 | * |
68d0f70e | 4 | * Copyright (c) 2003-2008 Fabrice Bellard |
5fafdf24 | 5 | * |
ea2384d3 FB |
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 | */ | |
faf07963 | 24 | #include "qemu-common.h" |
f7b4a940 | 25 | #include "osdep.h" |
ec36ba14 | 26 | #include "block_int.h" |
9230eaf6 | 27 | #include <stdio.h> |
ea2384d3 | 28 | |
e8445331 FB |
29 | #ifdef _WIN32 |
30 | #include <windows.h> | |
31 | #endif | |
32 | ||
137519ce AJ |
33 | /* Default to cache=writeback as data integrity is not important for qemu-tcg. */ |
34 | #define BRDV_O_FLAGS BDRV_O_CACHE_WB | |
35 | ||
a5e50b26 | 36 | static void QEMU_NORETURN error(const char *fmt, ...) |
ea2384d3 FB |
37 | { |
38 | va_list ap; | |
39 | va_start(ap, fmt); | |
57d1a2b6 | 40 | fprintf(stderr, "qemu-img: "); |
ea2384d3 FB |
41 | vfprintf(stderr, fmt, ap); |
42 | fprintf(stderr, "\n"); | |
43 | exit(1); | |
44 | va_end(ap); | |
45 | } | |
46 | ||
47 | static void format_print(void *opaque, const char *name) | |
48 | { | |
49 | printf(" %s", name); | |
50 | } | |
51 | ||
d2c639d6 | 52 | /* Please keep in synch with qemu-img.texi */ |
3f379ab1 | 53 | static void help(void) |
ea2384d3 | 54 | { |
68d0f70e | 55 | printf("qemu-img version " QEMU_VERSION ", Copyright (c) 2004-2008 Fabrice Bellard\n" |
57d1a2b6 | 56 | "usage: qemu-img command [command options]\n" |
ea2384d3 FB |
57 | "QEMU disk image utility\n" |
58 | "\n" | |
59 | "Command syntax:\n" | |
1585969c | 60 | " check [-f fmt] filename\n" |
9230eaf6 | 61 | " create [-e] [-6] [-F fmt] [-b base_image] [-f fmt] filename [size]\n" |
ea2384d3 | 62 | " commit [-f fmt] filename\n" |
f58c7b35 | 63 | " convert [-c] [-e] [-6] [-f fmt] [-O output_fmt] [-B output_base_image] filename [filename2 [...]] output_filename\n" |
ea2384d3 | 64 | " info [-f fmt] filename\n" |
d2c639d6 | 65 | " snapshot [-l | -a snapshot | -c snapshot | -d snapshot] filename\n" |
ea2384d3 FB |
66 | "\n" |
67 | "Command parameters:\n" | |
68 | " 'filename' is a disk image filename\n" | |
69 | " 'base_image' is the read-only disk image which is used as base for a copy on\n" | |
70 | " write image; the copy on write image only stores the modified data\n" | |
f58c7b35 TS |
71 | " 'output_base_image' forces the output image to be created as a copy on write\n" |
72 | " image of the specified base image; 'output_base_image' should have the same\n" | |
73 | " content as the input's base image, however the path, image format, etc may\n" | |
74 | " differ\n" | |
ea2384d3 | 75 | " 'fmt' is the disk image format. It is guessed automatically in most cases\n" |
d2c639d6 | 76 | " 'size' is the disk image size in kilobytes. Optional suffixes\n" |
2fbc4095 AJ |
77 | " 'M' (megabyte, 1024 * 1024) and 'G' (gigabyte, 1024 * 1024 * 1024) are\n" |
78 | " supported any 'k' or 'K' is ignored\n" | |
ea2384d3 FB |
79 | " 'output_filename' is the destination disk image filename\n" |
80 | " 'output_fmt' is the destination format\n" | |
81 | " '-c' indicates that target image must be compressed (qcow format only)\n" | |
82 | " '-e' indicates that the target image must be encrypted (qcow format only)\n" | |
ec36ba14 | 83 | " '-6' indicates that the target image must use compatibility level 6 (vmdk format only)\n" |
d2c639d6 | 84 | " '-h' with or without a command shows this help and lists the supported formats\n" |
f7b4a940 | 85 | "\n" |
d2c639d6 BS |
86 | "Parameters to snapshot subcommand:\n" |
87 | " 'snapshot' is the name of the snapshot to create, apply or delete\n" | |
88 | " '-a' applies a snapshot (revert disk to saved state)\n" | |
89 | " '-c' creates a snapshot\n" | |
90 | " '-d' deletes a snapshot\n" | |
91 | " '-l' lists all snapshots in the given image\n" | |
ea2384d3 | 92 | ); |
d2c639d6 | 93 | printf("\nSupported formats:"); |
ea2384d3 FB |
94 | bdrv_iterate_format(format_print, NULL); |
95 | printf("\n"); | |
96 | exit(1); | |
97 | } | |
98 | ||
ea2384d3 FB |
99 | #if defined(WIN32) |
100 | /* XXX: put correct support for win32 */ | |
101 | static int read_password(char *buf, int buf_size) | |
102 | { | |
103 | int c, i; | |
104 | printf("Password: "); | |
105 | fflush(stdout); | |
106 | i = 0; | |
107 | for(;;) { | |
108 | c = getchar(); | |
109 | if (c == '\n') | |
110 | break; | |
111 | if (i < (buf_size - 1)) | |
112 | buf[i++] = c; | |
113 | } | |
114 | buf[i] = '\0'; | |
115 | return 0; | |
116 | } | |
117 | ||
118 | #else | |
119 | ||
120 | #include <termios.h> | |
121 | ||
122 | static struct termios oldtty; | |
123 | ||
124 | static void term_exit(void) | |
125 | { | |
126 | tcsetattr (0, TCSANOW, &oldtty); | |
127 | } | |
128 | ||
129 | static void term_init(void) | |
130 | { | |
131 | struct termios tty; | |
132 | ||
133 | tcgetattr (0, &tty); | |
134 | oldtty = tty; | |
135 | ||
136 | tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP | |
137 | |INLCR|IGNCR|ICRNL|IXON); | |
138 | tty.c_oflag |= OPOST; | |
139 | tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN); | |
140 | tty.c_cflag &= ~(CSIZE|PARENB); | |
141 | tty.c_cflag |= CS8; | |
142 | tty.c_cc[VMIN] = 1; | |
143 | tty.c_cc[VTIME] = 0; | |
3b46e624 | 144 | |
ea2384d3 FB |
145 | tcsetattr (0, TCSANOW, &tty); |
146 | ||
147 | atexit(term_exit); | |
148 | } | |
149 | ||
3f379ab1 | 150 | static int read_password(char *buf, int buf_size) |
ea2384d3 FB |
151 | { |
152 | uint8_t ch; | |
153 | int i, ret; | |
154 | ||
155 | printf("password: "); | |
156 | fflush(stdout); | |
157 | term_init(); | |
158 | i = 0; | |
159 | for(;;) { | |
160 | ret = read(0, &ch, 1); | |
161 | if (ret == -1) { | |
162 | if (errno == EAGAIN || errno == EINTR) { | |
163 | continue; | |
164 | } else { | |
165 | ret = -1; | |
166 | break; | |
167 | } | |
168 | } else if (ret == 0) { | |
169 | ret = -1; | |
170 | break; | |
171 | } else { | |
172 | if (ch == '\r') { | |
173 | ret = 0; | |
174 | break; | |
175 | } | |
176 | if (i < (buf_size - 1)) | |
177 | buf[i++] = ch; | |
178 | } | |
179 | } | |
180 | term_exit(); | |
181 | buf[i] = '\0'; | |
182 | printf("\n"); | |
183 | return ret; | |
184 | } | |
185 | #endif | |
186 | ||
75c23805 FB |
187 | static BlockDriverState *bdrv_new_open(const char *filename, |
188 | const char *fmt) | |
189 | { | |
190 | BlockDriverState *bs; | |
191 | BlockDriver *drv; | |
192 | char password[256]; | |
193 | ||
194 | bs = bdrv_new(""); | |
195 | if (!bs) | |
196 | error("Not enough memory"); | |
197 | if (fmt) { | |
198 | drv = bdrv_find_format(fmt); | |
199 | if (!drv) | |
200 | error("Unknown file format '%s'", fmt); | |
201 | } else { | |
202 | drv = NULL; | |
203 | } | |
137519ce | 204 | if (bdrv_open2(bs, filename, BRDV_O_FLAGS, drv) < 0) { |
75c23805 FB |
205 | error("Could not open '%s'", filename); |
206 | } | |
207 | if (bdrv_is_encrypted(bs)) { | |
208 | printf("Disk image '%s' is encrypted.\n", filename); | |
209 | if (read_password(password, sizeof(password)) < 0) | |
210 | error("No password given"); | |
211 | if (bdrv_set_key(bs, password) < 0) | |
212 | error("invalid password"); | |
213 | } | |
214 | return bs; | |
215 | } | |
216 | ||
ea2384d3 FB |
217 | static int img_create(int argc, char **argv) |
218 | { | |
ec36ba14 | 219 | int c, ret, flags; |
ea2384d3 | 220 | const char *fmt = "raw"; |
9230eaf6 | 221 | const char *base_fmt = NULL; |
ea2384d3 FB |
222 | const char *filename; |
223 | const char *base_filename = NULL; | |
96b8f136 | 224 | uint64_t size; |
24501489 | 225 | double sizef; |
ea2384d3 FB |
226 | const char *p; |
227 | BlockDriver *drv; | |
3b46e624 | 228 | |
ec36ba14 | 229 | flags = 0; |
ea2384d3 | 230 | for(;;) { |
9230eaf6 | 231 | c = getopt(argc, argv, "F:b:f:he6"); |
ea2384d3 FB |
232 | if (c == -1) |
233 | break; | |
234 | switch(c) { | |
235 | case 'h': | |
236 | help(); | |
237 | break; | |
9230eaf6 AL |
238 | case 'F': |
239 | base_fmt = optarg; | |
240 | break; | |
ea2384d3 FB |
241 | case 'b': |
242 | base_filename = optarg; | |
243 | break; | |
244 | case 'f': | |
245 | fmt = optarg; | |
246 | break; | |
247 | case 'e': | |
ec36ba14 | 248 | flags |= BLOCK_FLAG_ENCRYPT; |
ea2384d3 | 249 | break; |
d8871c5a | 250 | case '6': |
ec36ba14 | 251 | flags |= BLOCK_FLAG_COMPAT6; |
d8871c5a | 252 | break; |
ea2384d3 FB |
253 | } |
254 | } | |
5fafdf24 | 255 | if (optind >= argc) |
ea2384d3 FB |
256 | help(); |
257 | filename = argv[optind++]; | |
258 | size = 0; | |
75c23805 | 259 | if (base_filename) { |
e94f3a60 | 260 | BlockDriverState *bs; |
9230eaf6 AL |
261 | BlockDriver *base_drv = NULL; |
262 | ||
263 | if (base_fmt) { | |
264 | base_drv = bdrv_find_format(base_fmt); | |
265 | if (base_drv == NULL) | |
266 | error("Unknown basefile format '%s'", base_fmt); | |
267 | } | |
268 | ||
269 | bs = bdrv_new_open(base_filename, base_fmt); | |
75c23805 FB |
270 | bdrv_get_geometry(bs, &size); |
271 | size *= 512; | |
272 | bdrv_delete(bs); | |
273 | } else { | |
ea2384d3 FB |
274 | if (optind >= argc) |
275 | help(); | |
276 | p = argv[optind]; | |
24501489 | 277 | sizef = strtod(p, (char **)&p); |
ea2384d3 | 278 | if (*p == 'M') { |
24501489 | 279 | size = (uint64_t)(sizef * 1024 * 1024); |
ea2384d3 | 280 | } else if (*p == 'G') { |
24501489 | 281 | size = (uint64_t)(sizef * 1024 * 1024 * 1024); |
ea2384d3 | 282 | } else if (*p == 'k' || *p == 'K' || *p == '\0') { |
24501489 | 283 | size = (uint64_t)(sizef * 1024); |
ea2384d3 FB |
284 | } else { |
285 | help(); | |
286 | } | |
287 | } | |
288 | drv = bdrv_find_format(fmt); | |
289 | if (!drv) | |
290 | error("Unknown file format '%s'", fmt); | |
0cfec834 | 291 | printf("Formatting '%s', fmt=%s", |
ea2384d3 | 292 | filename, fmt); |
ec36ba14 | 293 | if (flags & BLOCK_FLAG_ENCRYPT) |
ea2384d3 | 294 | printf(", encrypted"); |
ec36ba14 TS |
295 | if (flags & BLOCK_FLAG_COMPAT6) |
296 | printf(", compatibility level=6"); | |
75c23805 FB |
297 | if (base_filename) { |
298 | printf(", backing_file=%s", | |
ea2384d3 | 299 | base_filename); |
9230eaf6 AL |
300 | if (base_fmt) |
301 | printf(", backing_fmt=%s", | |
302 | base_fmt); | |
75c23805 | 303 | } |
96b8f136 | 304 | printf(", size=%" PRIu64 " kB\n", size / 1024); |
9230eaf6 | 305 | ret = bdrv_create2(drv, filename, size / 512, base_filename, base_fmt, flags); |
ea2384d3 FB |
306 | if (ret < 0) { |
307 | if (ret == -ENOTSUP) { | |
3c56521b | 308 | error("Formatting or formatting option not supported for file format '%s'", fmt); |
6e9ea0c0 AJ |
309 | } else if (ret == -EFBIG) { |
310 | error("The image size is too large for file format '%s'", fmt); | |
ea2384d3 FB |
311 | } else { |
312 | error("Error while formatting"); | |
313 | } | |
314 | } | |
315 | return 0; | |
316 | } | |
317 | ||
1585969c AL |
318 | static int img_check(int argc, char **argv) |
319 | { | |
320 | int c, ret; | |
321 | const char *filename, *fmt; | |
322 | BlockDriver *drv; | |
323 | BlockDriverState *bs; | |
324 | ||
325 | fmt = NULL; | |
326 | for(;;) { | |
327 | c = getopt(argc, argv, "f:h"); | |
328 | if (c == -1) | |
329 | break; | |
330 | switch(c) { | |
331 | case 'h': | |
332 | help(); | |
333 | break; | |
334 | case 'f': | |
335 | fmt = optarg; | |
336 | break; | |
337 | } | |
338 | } | |
339 | if (optind >= argc) | |
340 | help(); | |
341 | filename = argv[optind++]; | |
342 | ||
343 | bs = bdrv_new(""); | |
344 | if (!bs) | |
345 | error("Not enough memory"); | |
346 | if (fmt) { | |
347 | drv = bdrv_find_format(fmt); | |
348 | if (!drv) | |
349 | error("Unknown file format '%s'", fmt); | |
350 | } else { | |
351 | drv = NULL; | |
352 | } | |
353 | if (bdrv_open2(bs, filename, BRDV_O_FLAGS, drv) < 0) { | |
354 | error("Could not open '%s'", filename); | |
355 | } | |
356 | ret = bdrv_check(bs); | |
357 | switch(ret) { | |
358 | case 0: | |
359 | printf("No errors were found on the image.\n"); | |
360 | break; | |
361 | case -ENOTSUP: | |
362 | error("This image format does not support checks"); | |
363 | break; | |
364 | default: | |
365 | if (ret < 0) { | |
366 | error("An error occurred during the check"); | |
367 | } else { | |
368 | printf("%d errors were found on the image.\n", ret); | |
369 | } | |
370 | break; | |
371 | } | |
372 | ||
373 | bdrv_delete(bs); | |
374 | return 0; | |
375 | } | |
376 | ||
ea2384d3 FB |
377 | static int img_commit(int argc, char **argv) |
378 | { | |
379 | int c, ret; | |
380 | const char *filename, *fmt; | |
381 | BlockDriver *drv; | |
382 | BlockDriverState *bs; | |
383 | ||
384 | fmt = NULL; | |
385 | for(;;) { | |
386 | c = getopt(argc, argv, "f:h"); | |
387 | if (c == -1) | |
388 | break; | |
389 | switch(c) { | |
390 | case 'h': | |
391 | help(); | |
392 | break; | |
393 | case 'f': | |
394 | fmt = optarg; | |
395 | break; | |
396 | } | |
397 | } | |
5fafdf24 | 398 | if (optind >= argc) |
ea2384d3 FB |
399 | help(); |
400 | filename = argv[optind++]; | |
401 | ||
402 | bs = bdrv_new(""); | |
403 | if (!bs) | |
404 | error("Not enough memory"); | |
405 | if (fmt) { | |
406 | drv = bdrv_find_format(fmt); | |
407 | if (!drv) | |
408 | error("Unknown file format '%s'", fmt); | |
409 | } else { | |
410 | drv = NULL; | |
411 | } | |
137519ce | 412 | if (bdrv_open2(bs, filename, BRDV_O_FLAGS, drv) < 0) { |
ea2384d3 FB |
413 | error("Could not open '%s'", filename); |
414 | } | |
415 | ret = bdrv_commit(bs); | |
416 | switch(ret) { | |
417 | case 0: | |
418 | printf("Image committed.\n"); | |
419 | break; | |
420 | case -ENOENT: | |
421 | error("No disk inserted"); | |
422 | break; | |
423 | case -EACCES: | |
424 | error("Image is read-only"); | |
425 | break; | |
426 | case -ENOTSUP: | |
427 | error("Image is already committed"); | |
428 | break; | |
429 | default: | |
430 | error("Error while committing image"); | |
431 | break; | |
432 | } | |
433 | ||
434 | bdrv_delete(bs); | |
435 | return 0; | |
436 | } | |
437 | ||
438 | static int is_not_zero(const uint8_t *sector, int len) | |
439 | { | |
440 | int i; | |
441 | len >>= 2; | |
442 | for(i = 0;i < len; i++) { | |
443 | if (((uint32_t *)sector)[i] != 0) | |
444 | return 1; | |
445 | } | |
446 | return 0; | |
447 | } | |
448 | ||
f58c7b35 TS |
449 | /* |
450 | * Returns true iff the first sector pointed to by 'buf' contains at least | |
451 | * a non-NUL byte. | |
452 | * | |
453 | * 'pnum' is set to the number of sectors (including and immediately following | |
454 | * the first one) that are known to be in the same allocated/unallocated state. | |
455 | */ | |
ea2384d3 FB |
456 | static int is_allocated_sectors(const uint8_t *buf, int n, int *pnum) |
457 | { | |
458 | int v, i; | |
459 | ||
460 | if (n <= 0) { | |
461 | *pnum = 0; | |
462 | return 0; | |
463 | } | |
464 | v = is_not_zero(buf, 512); | |
465 | for(i = 1; i < n; i++) { | |
466 | buf += 512; | |
467 | if (v != is_not_zero(buf, 512)) | |
468 | break; | |
469 | } | |
470 | *pnum = i; | |
471 | return v; | |
472 | } | |
473 | ||
ea2384d3 FB |
474 | #define IO_BUF_SIZE 65536 |
475 | ||
476 | static int img_convert(int argc, char **argv) | |
477 | { | |
926c2d23 | 478 | int c, ret, n, n1, bs_n, bs_i, flags, cluster_size, cluster_sectors; |
f58c7b35 | 479 | const char *fmt, *out_fmt, *out_baseimg, *out_filename; |
ea2384d3 | 480 | BlockDriver *drv; |
926c2d23 | 481 | BlockDriverState **bs, *out_bs; |
96b8f136 TS |
482 | int64_t total_sectors, nb_sectors, sector_num, bs_offset; |
483 | uint64_t bs_sectors; | |
ea2384d3 FB |
484 | uint8_t buf[IO_BUF_SIZE]; |
485 | const uint8_t *buf1; | |
faea38e7 | 486 | BlockDriverInfo bdi; |
ea2384d3 FB |
487 | |
488 | fmt = NULL; | |
489 | out_fmt = "raw"; | |
f58c7b35 | 490 | out_baseimg = NULL; |
ec36ba14 | 491 | flags = 0; |
ea2384d3 | 492 | for(;;) { |
f58c7b35 | 493 | c = getopt(argc, argv, "f:O:B:hce6"); |
ea2384d3 FB |
494 | if (c == -1) |
495 | break; | |
496 | switch(c) { | |
497 | case 'h': | |
498 | help(); | |
499 | break; | |
500 | case 'f': | |
501 | fmt = optarg; | |
502 | break; | |
503 | case 'O': | |
504 | out_fmt = optarg; | |
505 | break; | |
f58c7b35 TS |
506 | case 'B': |
507 | out_baseimg = optarg; | |
508 | break; | |
ea2384d3 | 509 | case 'c': |
ec36ba14 | 510 | flags |= BLOCK_FLAG_COMPRESS; |
ea2384d3 FB |
511 | break; |
512 | case 'e': | |
ec36ba14 TS |
513 | flags |= BLOCK_FLAG_ENCRYPT; |
514 | break; | |
515 | case '6': | |
516 | flags |= BLOCK_FLAG_COMPAT6; | |
ea2384d3 FB |
517 | break; |
518 | } | |
519 | } | |
3b46e624 | 520 | |
926c2d23 AZ |
521 | bs_n = argc - optind - 1; |
522 | if (bs_n < 1) help(); | |
523 | ||
524 | out_filename = argv[argc - 1]; | |
f58c7b35 TS |
525 | |
526 | if (bs_n > 1 && out_baseimg) | |
527 | error("-B makes no sense when concatenating multiple input images"); | |
926c2d23 AZ |
528 | |
529 | bs = calloc(bs_n, sizeof(BlockDriverState *)); | |
530 | if (!bs) | |
531 | error("Out of memory"); | |
532 | ||
533 | total_sectors = 0; | |
534 | for (bs_i = 0; bs_i < bs_n; bs_i++) { | |
535 | bs[bs_i] = bdrv_new_open(argv[optind + bs_i], fmt); | |
536 | if (!bs[bs_i]) | |
537 | error("Could not open '%s'", argv[optind + bs_i]); | |
538 | bdrv_get_geometry(bs[bs_i], &bs_sectors); | |
539 | total_sectors += bs_sectors; | |
540 | } | |
ea2384d3 FB |
541 | |
542 | drv = bdrv_find_format(out_fmt); | |
543 | if (!drv) | |
d34dda5e | 544 | error("Unknown file format '%s'", out_fmt); |
ec36ba14 | 545 | if (flags & BLOCK_FLAG_COMPRESS && drv != &bdrv_qcow && drv != &bdrv_qcow2) |
ea2384d3 | 546 | error("Compression not supported for this file format"); |
ec36ba14 | 547 | if (flags & BLOCK_FLAG_ENCRYPT && drv != &bdrv_qcow && drv != &bdrv_qcow2) |
ea2384d3 | 548 | error("Encryption not supported for this file format"); |
d8871c5a | 549 | if (flags & BLOCK_FLAG_COMPAT6 && drv != &bdrv_vmdk) |
ec36ba14 TS |
550 | error("Alternative compatibility level not supported for this file format"); |
551 | if (flags & BLOCK_FLAG_ENCRYPT && flags & BLOCK_FLAG_COMPRESS) | |
ea2384d3 | 552 | error("Compression and encryption not supported at the same time"); |
926c2d23 | 553 | |
f58c7b35 | 554 | ret = bdrv_create(drv, out_filename, total_sectors, out_baseimg, flags); |
ea2384d3 FB |
555 | if (ret < 0) { |
556 | if (ret == -ENOTSUP) { | |
93c65b47 | 557 | error("Formatting not supported for file format '%s'", out_fmt); |
6e9ea0c0 AJ |
558 | } else if (ret == -EFBIG) { |
559 | error("The image size is too large for file format '%s'", out_fmt); | |
ea2384d3 FB |
560 | } else { |
561 | error("Error while formatting '%s'", out_filename); | |
562 | } | |
563 | } | |
3b46e624 | 564 | |
ea2384d3 FB |
565 | out_bs = bdrv_new_open(out_filename, out_fmt); |
566 | ||
926c2d23 AZ |
567 | bs_i = 0; |
568 | bs_offset = 0; | |
569 | bdrv_get_geometry(bs[0], &bs_sectors); | |
570 | ||
571 | if (flags & BLOCK_FLAG_COMPRESS) { | |
faea38e7 FB |
572 | if (bdrv_get_info(out_bs, &bdi) < 0) |
573 | error("could not get block driver info"); | |
574 | cluster_size = bdi.cluster_size; | |
ea2384d3 FB |
575 | if (cluster_size <= 0 || cluster_size > IO_BUF_SIZE) |
576 | error("invalid cluster size"); | |
577 | cluster_sectors = cluster_size >> 9; | |
578 | sector_num = 0; | |
579 | for(;;) { | |
926c2d23 AZ |
580 | int64_t bs_num; |
581 | int remainder; | |
582 | uint8_t *buf2; | |
583 | ||
ea2384d3 FB |
584 | nb_sectors = total_sectors - sector_num; |
585 | if (nb_sectors <= 0) | |
586 | break; | |
587 | if (nb_sectors >= cluster_sectors) | |
588 | n = cluster_sectors; | |
589 | else | |
590 | n = nb_sectors; | |
926c2d23 AZ |
591 | |
592 | bs_num = sector_num - bs_offset; | |
593 | assert (bs_num >= 0); | |
594 | remainder = n; | |
595 | buf2 = buf; | |
596 | while (remainder > 0) { | |
597 | int nlow; | |
598 | while (bs_num == bs_sectors) { | |
599 | bs_i++; | |
600 | assert (bs_i < bs_n); | |
601 | bs_offset += bs_sectors; | |
602 | bdrv_get_geometry(bs[bs_i], &bs_sectors); | |
603 | bs_num = 0; | |
604 | /* printf("changing part: sector_num=%lld, " | |
605 | "bs_i=%d, bs_offset=%lld, bs_sectors=%lld\n", | |
606 | sector_num, bs_i, bs_offset, bs_sectors); */ | |
607 | } | |
608 | assert (bs_num < bs_sectors); | |
609 | ||
610 | nlow = (remainder > bs_sectors - bs_num) ? bs_sectors - bs_num : remainder; | |
611 | ||
612 | if (bdrv_read(bs[bs_i], bs_num, buf2, nlow) < 0) | |
613 | error("error while reading"); | |
614 | ||
615 | buf2 += nlow * 512; | |
616 | bs_num += nlow; | |
617 | ||
618 | remainder -= nlow; | |
619 | } | |
620 | assert (remainder == 0); | |
621 | ||
ea2384d3 FB |
622 | if (n < cluster_sectors) |
623 | memset(buf + n * 512, 0, cluster_size - n * 512); | |
624 | if (is_not_zero(buf, cluster_size)) { | |
5fafdf24 | 625 | if (bdrv_write_compressed(out_bs, sector_num, buf, |
faea38e7 | 626 | cluster_sectors) != 0) |
ec3757de FB |
627 | error("error while compressing sector %" PRId64, |
628 | sector_num); | |
ea2384d3 FB |
629 | } |
630 | sector_num += n; | |
631 | } | |
faea38e7 FB |
632 | /* signal EOF to align */ |
633 | bdrv_write_compressed(out_bs, 0, NULL, 0); | |
ea2384d3 | 634 | } else { |
f58c7b35 | 635 | sector_num = 0; // total number of sectors converted so far |
ea2384d3 FB |
636 | for(;;) { |
637 | nb_sectors = total_sectors - sector_num; | |
638 | if (nb_sectors <= 0) | |
639 | break; | |
640 | if (nb_sectors >= (IO_BUF_SIZE / 512)) | |
641 | n = (IO_BUF_SIZE / 512); | |
642 | else | |
643 | n = nb_sectors; | |
926c2d23 AZ |
644 | |
645 | while (sector_num - bs_offset >= bs_sectors) { | |
646 | bs_i ++; | |
647 | assert (bs_i < bs_n); | |
648 | bs_offset += bs_sectors; | |
649 | bdrv_get_geometry(bs[bs_i], &bs_sectors); | |
650 | /* printf("changing part: sector_num=%lld, bs_i=%d, " | |
651 | "bs_offset=%lld, bs_sectors=%lld\n", | |
652 | sector_num, bs_i, bs_offset, bs_sectors); */ | |
653 | } | |
654 | ||
655 | if (n > bs_offset + bs_sectors - sector_num) | |
656 | n = bs_offset + bs_sectors - sector_num; | |
657 | ||
93c65b47 AL |
658 | if (drv != &bdrv_host_device) { |
659 | if (!bdrv_is_allocated(bs[bs_i], sector_num - bs_offset, | |
660 | n, &n1)) { | |
661 | sector_num += n1; | |
662 | continue; | |
663 | } | |
664 | /* The next 'n1' sectors are allocated in the input image. Copy | |
665 | only those as they may be followed by unallocated sectors. */ | |
666 | n = n1; | |
667 | } else { | |
668 | n1 = n; | |
f58c7b35 TS |
669 | } |
670 | ||
926c2d23 | 671 | if (bdrv_read(bs[bs_i], sector_num - bs_offset, buf, n) < 0) |
ea2384d3 FB |
672 | error("error while reading"); |
673 | /* NOTE: at the same time we convert, we do not write zero | |
674 | sectors to have a chance to compress the image. Ideally, we | |
675 | should add a specific call to have the info to go faster */ | |
676 | buf1 = buf; | |
677 | while (n > 0) { | |
f58c7b35 TS |
678 | /* If the output image is being created as a copy on write image, |
679 | copy all sectors even the ones containing only NUL bytes, | |
93c65b47 AL |
680 | because they may differ from the sectors in the base image. |
681 | ||
682 | If the output is to a host device, we also write out | |
683 | sectors that are entirely 0, since whatever data was | |
684 | already there is garbage, not 0s. */ | |
685 | if (drv == &bdrv_host_device || out_baseimg || | |
686 | is_allocated_sectors(buf1, n, &n1)) { | |
5fafdf24 | 687 | if (bdrv_write(out_bs, sector_num, buf1, n1) < 0) |
ea2384d3 FB |
688 | error("error while writing"); |
689 | } | |
690 | sector_num += n1; | |
691 | n -= n1; | |
692 | buf1 += n1 * 512; | |
693 | } | |
694 | } | |
695 | } | |
696 | bdrv_delete(out_bs); | |
926c2d23 AZ |
697 | for (bs_i = 0; bs_i < bs_n; bs_i++) |
698 | bdrv_delete(bs[bs_i]); | |
699 | free(bs); | |
ea2384d3 FB |
700 | return 0; |
701 | } | |
702 | ||
57d1a2b6 FB |
703 | #ifdef _WIN32 |
704 | static int64_t get_allocated_file_size(const char *filename) | |
705 | { | |
e8445331 FB |
706 | typedef DWORD (WINAPI * get_compressed_t)(const char *filename, DWORD *high); |
707 | get_compressed_t get_compressed; | |
57d1a2b6 | 708 | struct _stati64 st; |
e8445331 FB |
709 | |
710 | /* WinNT support GetCompressedFileSize to determine allocate size */ | |
711 | get_compressed = (get_compressed_t) GetProcAddress(GetModuleHandle("kernel32"), "GetCompressedFileSizeA"); | |
712 | if (get_compressed) { | |
713 | DWORD high, low; | |
714 | low = get_compressed(filename, &high); | |
715 | if (low != 0xFFFFFFFFlu || GetLastError() == NO_ERROR) | |
716 | return (((int64_t) high) << 32) + low; | |
717 | } | |
718 | ||
5fafdf24 | 719 | if (_stati64(filename, &st) < 0) |
57d1a2b6 FB |
720 | return -1; |
721 | return st.st_size; | |
722 | } | |
723 | #else | |
724 | static int64_t get_allocated_file_size(const char *filename) | |
725 | { | |
726 | struct stat st; | |
5fafdf24 | 727 | if (stat(filename, &st) < 0) |
57d1a2b6 FB |
728 | return -1; |
729 | return (int64_t)st.st_blocks * 512; | |
730 | } | |
731 | #endif | |
732 | ||
faea38e7 FB |
733 | static void dump_snapshots(BlockDriverState *bs) |
734 | { | |
735 | QEMUSnapshotInfo *sn_tab, *sn; | |
736 | int nb_sns, i; | |
737 | char buf[256]; | |
738 | ||
739 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
740 | if (nb_sns <= 0) | |
741 | return; | |
742 | printf("Snapshot list:\n"); | |
743 | printf("%s\n", bdrv_snapshot_dump(buf, sizeof(buf), NULL)); | |
744 | for(i = 0; i < nb_sns; i++) { | |
745 | sn = &sn_tab[i]; | |
746 | printf("%s\n", bdrv_snapshot_dump(buf, sizeof(buf), sn)); | |
747 | } | |
748 | qemu_free(sn_tab); | |
749 | } | |
750 | ||
ea2384d3 FB |
751 | static int img_info(int argc, char **argv) |
752 | { | |
753 | int c; | |
754 | const char *filename, *fmt; | |
755 | BlockDriver *drv; | |
756 | BlockDriverState *bs; | |
757 | char fmt_name[128], size_buf[128], dsize_buf[128]; | |
96b8f136 TS |
758 | uint64_t total_sectors; |
759 | int64_t allocated_size; | |
93b6b2a3 FB |
760 | char backing_filename[1024]; |
761 | char backing_filename2[1024]; | |
faea38e7 | 762 | BlockDriverInfo bdi; |
ea2384d3 FB |
763 | |
764 | fmt = NULL; | |
765 | for(;;) { | |
766 | c = getopt(argc, argv, "f:h"); | |
767 | if (c == -1) | |
768 | break; | |
769 | switch(c) { | |
770 | case 'h': | |
771 | help(); | |
772 | break; | |
773 | case 'f': | |
774 | fmt = optarg; | |
775 | break; | |
776 | } | |
777 | } | |
5fafdf24 | 778 | if (optind >= argc) |
ea2384d3 FB |
779 | help(); |
780 | filename = argv[optind++]; | |
781 | ||
782 | bs = bdrv_new(""); | |
783 | if (!bs) | |
784 | error("Not enough memory"); | |
785 | if (fmt) { | |
786 | drv = bdrv_find_format(fmt); | |
787 | if (!drv) | |
788 | error("Unknown file format '%s'", fmt); | |
789 | } else { | |
790 | drv = NULL; | |
791 | } | |
137519ce | 792 | if (bdrv_open2(bs, filename, BRDV_O_FLAGS, drv) < 0) { |
ea2384d3 FB |
793 | error("Could not open '%s'", filename); |
794 | } | |
795 | bdrv_get_format(bs, fmt_name, sizeof(fmt_name)); | |
796 | bdrv_get_geometry(bs, &total_sectors); | |
797 | get_human_readable_size(size_buf, sizeof(size_buf), total_sectors * 512); | |
57d1a2b6 FB |
798 | allocated_size = get_allocated_file_size(filename); |
799 | if (allocated_size < 0) | |
a10ea30b | 800 | snprintf(dsize_buf, sizeof(dsize_buf), "unavailable"); |
de167e41 | 801 | else |
5fafdf24 | 802 | get_human_readable_size(dsize_buf, sizeof(dsize_buf), |
de167e41 | 803 | allocated_size); |
ea2384d3 FB |
804 | printf("image: %s\n" |
805 | "file format: %s\n" | |
ec3757de | 806 | "virtual size: %s (%" PRId64 " bytes)\n" |
ea2384d3 | 807 | "disk size: %s\n", |
5fafdf24 | 808 | filename, fmt_name, size_buf, |
ec3757de | 809 | (total_sectors * 512), |
ea2384d3 FB |
810 | dsize_buf); |
811 | if (bdrv_is_encrypted(bs)) | |
812 | printf("encrypted: yes\n"); | |
faea38e7 | 813 | if (bdrv_get_info(bs, &bdi) >= 0) { |
5fafdf24 | 814 | if (bdi.cluster_size != 0) |
faea38e7 FB |
815 | printf("cluster_size: %d\n", bdi.cluster_size); |
816 | } | |
93b6b2a3 | 817 | bdrv_get_backing_filename(bs, backing_filename, sizeof(backing_filename)); |
faea38e7 | 818 | if (backing_filename[0] != '\0') { |
93b6b2a3 FB |
819 | path_combine(backing_filename2, sizeof(backing_filename2), |
820 | filename, backing_filename); | |
5fafdf24 | 821 | printf("backing file: %s (actual path: %s)\n", |
93b6b2a3 FB |
822 | backing_filename, |
823 | backing_filename2); | |
faea38e7 FB |
824 | } |
825 | dump_snapshots(bs); | |
ea2384d3 FB |
826 | bdrv_delete(bs); |
827 | return 0; | |
828 | } | |
829 | ||
f7b4a940 AL |
830 | #define SNAPSHOT_LIST 1 |
831 | #define SNAPSHOT_CREATE 2 | |
832 | #define SNAPSHOT_APPLY 3 | |
833 | #define SNAPSHOT_DELETE 4 | |
834 | ||
835 | static void img_snapshot(int argc, char **argv) | |
836 | { | |
837 | BlockDriverState *bs; | |
838 | QEMUSnapshotInfo sn; | |
839 | char *filename, *snapshot_name = NULL; | |
40a4539e | 840 | int c, ret; |
f7b4a940 AL |
841 | int action = 0; |
842 | qemu_timeval tv; | |
843 | ||
844 | /* Parse commandline parameters */ | |
845 | for(;;) { | |
846 | c = getopt(argc, argv, "la:c:d:h"); | |
847 | if (c == -1) | |
848 | break; | |
849 | switch(c) { | |
850 | case 'h': | |
851 | help(); | |
852 | return; | |
853 | case 'l': | |
854 | if (action) { | |
855 | help(); | |
856 | return; | |
857 | } | |
858 | action = SNAPSHOT_LIST; | |
859 | break; | |
860 | case 'a': | |
861 | if (action) { | |
862 | help(); | |
863 | return; | |
864 | } | |
865 | action = SNAPSHOT_APPLY; | |
866 | snapshot_name = optarg; | |
867 | break; | |
868 | case 'c': | |
869 | if (action) { | |
870 | help(); | |
871 | return; | |
872 | } | |
873 | action = SNAPSHOT_CREATE; | |
874 | snapshot_name = optarg; | |
875 | break; | |
876 | case 'd': | |
877 | if (action) { | |
878 | help(); | |
879 | return; | |
880 | } | |
881 | action = SNAPSHOT_DELETE; | |
882 | snapshot_name = optarg; | |
883 | break; | |
884 | } | |
885 | } | |
886 | ||
887 | if (optind >= argc) | |
888 | help(); | |
889 | filename = argv[optind++]; | |
890 | ||
891 | /* Open the image */ | |
892 | bs = bdrv_new(""); | |
893 | if (!bs) | |
894 | error("Not enough memory"); | |
895 | ||
896 | if (bdrv_open2(bs, filename, 0, NULL) < 0) { | |
897 | error("Could not open '%s'", filename); | |
898 | } | |
899 | ||
900 | /* Perform the requested action */ | |
901 | switch(action) { | |
902 | case SNAPSHOT_LIST: | |
903 | dump_snapshots(bs); | |
904 | break; | |
905 | ||
906 | case SNAPSHOT_CREATE: | |
907 | memset(&sn, 0, sizeof(sn)); | |
908 | pstrcpy(sn.name, sizeof(sn.name), snapshot_name); | |
909 | ||
910 | qemu_gettimeofday(&tv); | |
911 | sn.date_sec = tv.tv_sec; | |
912 | sn.date_nsec = tv.tv_usec * 1000; | |
913 | ||
914 | ret = bdrv_snapshot_create(bs, &sn); | |
915 | if (ret) | |
916 | error("Could not create snapshot '%s': %d (%s)", | |
917 | snapshot_name, ret, strerror(-ret)); | |
918 | break; | |
919 | ||
920 | case SNAPSHOT_APPLY: | |
921 | ret = bdrv_snapshot_goto(bs, snapshot_name); | |
922 | if (ret) | |
923 | error("Could not apply snapshot '%s': %d (%s)", | |
924 | snapshot_name, ret, strerror(-ret)); | |
925 | break; | |
926 | ||
927 | case SNAPSHOT_DELETE: | |
928 | ret = bdrv_snapshot_delete(bs, snapshot_name); | |
929 | if (ret) | |
930 | error("Could not delete snapshot '%s': %d (%s)", | |
931 | snapshot_name, ret, strerror(-ret)); | |
932 | break; | |
933 | } | |
934 | ||
935 | /* Cleanup */ | |
936 | bdrv_delete(bs); | |
937 | } | |
938 | ||
ea2384d3 FB |
939 | int main(int argc, char **argv) |
940 | { | |
941 | const char *cmd; | |
942 | ||
943 | bdrv_init(); | |
944 | if (argc < 2) | |
945 | help(); | |
946 | cmd = argv[1]; | |
8f9b157e | 947 | argc--; argv++; |
ea2384d3 FB |
948 | if (!strcmp(cmd, "create")) { |
949 | img_create(argc, argv); | |
1585969c AL |
950 | } else if (!strcmp(cmd, "check")) { |
951 | img_check(argc, argv); | |
ea2384d3 FB |
952 | } else if (!strcmp(cmd, "commit")) { |
953 | img_commit(argc, argv); | |
954 | } else if (!strcmp(cmd, "convert")) { | |
955 | img_convert(argc, argv); | |
956 | } else if (!strcmp(cmd, "info")) { | |
957 | img_info(argc, argv); | |
f7b4a940 AL |
958 | } else if (!strcmp(cmd, "snapshot")) { |
959 | img_snapshot(argc, argv); | |
ea2384d3 FB |
960 | } else { |
961 | help(); | |
962 | } | |
963 | return 0; | |
964 | } |