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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" |
9ea2ea71 | 25 | #include "qemu-option.h" |
53f76e58 | 26 | #include "qemu-error.h" |
f7b4a940 | 27 | #include "osdep.h" |
dc786bc9 | 28 | #include "sysemu.h" |
ec36ba14 | 29 | #include "block_int.h" |
9230eaf6 | 30 | #include <stdio.h> |
ea2384d3 | 31 | |
e8445331 FB |
32 | #ifdef _WIN32 |
33 | #include <windows.h> | |
34 | #endif | |
35 | ||
c227f099 | 36 | typedef struct img_cmd_t { |
153859be SB |
37 | const char *name; |
38 | int (*handler)(int argc, char **argv); | |
c227f099 | 39 | } img_cmd_t; |
153859be | 40 | |
137519ce | 41 | /* Default to cache=writeback as data integrity is not important for qemu-tcg. */ |
adfe078e | 42 | #define BDRV_O_FLAGS BDRV_O_CACHE_WB |
661a0f71 | 43 | #define BDRV_DEFAULT_CACHE "writeback" |
137519ce | 44 | |
ea2384d3 FB |
45 | static void format_print(void *opaque, const char *name) |
46 | { | |
47 | printf(" %s", name); | |
48 | } | |
49 | ||
d2c639d6 | 50 | /* Please keep in synch with qemu-img.texi */ |
3f379ab1 | 51 | static void help(void) |
ea2384d3 | 52 | { |
e00291c0 PB |
53 | const char *help_msg = |
54 | "qemu-img version " QEMU_VERSION ", Copyright (c) 2004-2008 Fabrice Bellard\n" | |
3f020d70 | 55 | "usage: qemu-img command [command options]\n" |
56 | "QEMU disk image utility\n" | |
57 | "\n" | |
58 | "Command syntax:\n" | |
153859be SB |
59 | #define DEF(option, callback, arg_string) \ |
60 | " " arg_string "\n" | |
61 | #include "qemu-img-cmds.h" | |
62 | #undef DEF | |
63 | #undef GEN_DOCS | |
3f020d70 | 64 | "\n" |
65 | "Command parameters:\n" | |
66 | " 'filename' is a disk image filename\n" | |
67 | " 'fmt' is the disk image format. It is guessed automatically in most cases\n" | |
661a0f71 | 68 | " 'cache' is the cache mode used to write the output disk image, the valid\n" |
92196b2f SH |
69 | " options are: 'none', 'writeback' (default), 'writethrough', 'directsync'\n" |
70 | " and 'unsafe'\n" | |
3f020d70 | 71 | " 'size' is the disk image size in bytes. Optional suffixes\n" |
72 | " 'k' or 'K' (kilobyte, 1024), 'M' (megabyte, 1024k), 'G' (gigabyte, 1024M)\n" | |
73 | " and T (terabyte, 1024G) are supported. 'b' is ignored.\n" | |
74 | " 'output_filename' is the destination disk image filename\n" | |
75 | " 'output_fmt' is the destination format\n" | |
76 | " 'options' is a comma separated list of format specific options in a\n" | |
77 | " name=value format. Use -o ? for an overview of the options supported by the\n" | |
78 | " used format\n" | |
79 | " '-c' indicates that target image must be compressed (qcow format only)\n" | |
80 | " '-u' enables unsafe rebasing. It is assumed that old and new backing file\n" | |
81 | " match exactly. The image doesn't need a working backing file before\n" | |
82 | " rebasing in this case (useful for renaming the backing file)\n" | |
83 | " '-h' with or without a command shows this help and lists the supported formats\n" | |
6b837bc4 | 84 | " '-p' show progress of command (only certain commands)\n" |
3f020d70 | 85 | "\n" |
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" | |
e00291c0 PB |
91 | " '-l' lists all snapshots in the given image\n"; |
92 | ||
93 | printf("%s\nSupported formats:", help_msg); | |
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 | ||
4ac8aacd JS |
187 | static int print_block_option_help(const char *filename, const char *fmt) |
188 | { | |
189 | BlockDriver *drv, *proto_drv; | |
190 | QEMUOptionParameter *create_options = NULL; | |
191 | ||
192 | /* Find driver and parse its options */ | |
193 | drv = bdrv_find_format(fmt); | |
194 | if (!drv) { | |
15654a6d | 195 | error_report("Unknown file format '%s'", fmt); |
4ac8aacd JS |
196 | return 1; |
197 | } | |
198 | ||
199 | proto_drv = bdrv_find_protocol(filename); | |
200 | if (!proto_drv) { | |
15654a6d | 201 | error_report("Unknown protocol '%s'", filename); |
4ac8aacd JS |
202 | return 1; |
203 | } | |
204 | ||
205 | create_options = append_option_parameters(create_options, | |
206 | drv->create_options); | |
207 | create_options = append_option_parameters(create_options, | |
208 | proto_drv->create_options); | |
209 | print_option_help(create_options); | |
210 | free_option_parameters(create_options); | |
211 | return 0; | |
212 | } | |
213 | ||
75c23805 | 214 | static BlockDriverState *bdrv_new_open(const char *filename, |
9bc378c1 | 215 | const char *fmt, |
f163d073 | 216 | int flags) |
75c23805 FB |
217 | { |
218 | BlockDriverState *bs; | |
219 | BlockDriver *drv; | |
220 | char password[256]; | |
b9eaf9ec | 221 | int ret; |
75c23805 | 222 | |
b9eaf9ec | 223 | bs = bdrv_new("image"); |
ad717139 | 224 | |
75c23805 FB |
225 | if (fmt) { |
226 | drv = bdrv_find_format(fmt); | |
c2abccec | 227 | if (!drv) { |
15654a6d | 228 | error_report("Unknown file format '%s'", fmt); |
c2abccec MK |
229 | goto fail; |
230 | } | |
75c23805 FB |
231 | } else { |
232 | drv = NULL; | |
233 | } | |
b9eaf9ec KW |
234 | |
235 | ret = bdrv_open(bs, filename, flags, drv); | |
236 | if (ret < 0) { | |
237 | error_report("Could not open '%s': %s", filename, strerror(-ret)); | |
c2abccec | 238 | goto fail; |
75c23805 | 239 | } |
b9eaf9ec | 240 | |
75c23805 FB |
241 | if (bdrv_is_encrypted(bs)) { |
242 | printf("Disk image '%s' is encrypted.\n", filename); | |
c2abccec | 243 | if (read_password(password, sizeof(password)) < 0) { |
15654a6d | 244 | error_report("No password given"); |
c2abccec MK |
245 | goto fail; |
246 | } | |
247 | if (bdrv_set_key(bs, password) < 0) { | |
15654a6d | 248 | error_report("invalid password"); |
c2abccec MK |
249 | goto fail; |
250 | } | |
75c23805 FB |
251 | } |
252 | return bs; | |
c2abccec MK |
253 | fail: |
254 | if (bs) { | |
255 | bdrv_delete(bs); | |
256 | } | |
257 | return NULL; | |
75c23805 FB |
258 | } |
259 | ||
c2abccec | 260 | static int add_old_style_options(const char *fmt, QEMUOptionParameter *list, |
eec77d9e JS |
261 | const char *base_filename, |
262 | const char *base_fmt) | |
efa84d43 | 263 | { |
efa84d43 KW |
264 | if (base_filename) { |
265 | if (set_option_parameter(list, BLOCK_OPT_BACKING_FILE, base_filename)) { | |
15654a6d JS |
266 | error_report("Backing file not supported for file format '%s'", |
267 | fmt); | |
c2abccec | 268 | return -1; |
efa84d43 KW |
269 | } |
270 | } | |
271 | if (base_fmt) { | |
272 | if (set_option_parameter(list, BLOCK_OPT_BACKING_FMT, base_fmt)) { | |
15654a6d JS |
273 | error_report("Backing file format not supported for file " |
274 | "format '%s'", fmt); | |
c2abccec | 275 | return -1; |
efa84d43 KW |
276 | } |
277 | } | |
c2abccec | 278 | return 0; |
efa84d43 KW |
279 | } |
280 | ||
ea2384d3 FB |
281 | static int img_create(int argc, char **argv) |
282 | { | |
eec77d9e | 283 | int c, ret = 0; |
1da7cfbd | 284 | uint64_t img_size = -1; |
ea2384d3 | 285 | const char *fmt = "raw"; |
9230eaf6 | 286 | const char *base_fmt = NULL; |
ea2384d3 FB |
287 | const char *filename; |
288 | const char *base_filename = NULL; | |
9ea2ea71 | 289 | char *options = NULL; |
3b46e624 | 290 | |
ea2384d3 | 291 | for(;;) { |
9ea2ea71 | 292 | c = getopt(argc, argv, "F:b:f:he6o:"); |
b8fb60da | 293 | if (c == -1) { |
ea2384d3 | 294 | break; |
b8fb60da | 295 | } |
ea2384d3 | 296 | switch(c) { |
ef87394c | 297 | case '?': |
ea2384d3 FB |
298 | case 'h': |
299 | help(); | |
300 | break; | |
9230eaf6 AL |
301 | case 'F': |
302 | base_fmt = optarg; | |
303 | break; | |
ea2384d3 FB |
304 | case 'b': |
305 | base_filename = optarg; | |
306 | break; | |
307 | case 'f': | |
308 | fmt = optarg; | |
309 | break; | |
310 | case 'e': | |
9d42e15d | 311 | error_report("option -e is deprecated, please use \'-o " |
eec77d9e JS |
312 | "encryption\' instead!"); |
313 | return 1; | |
d8871c5a | 314 | case '6': |
9d42e15d | 315 | error_report("option -6 is deprecated, please use \'-o " |
eec77d9e JS |
316 | "compat6\' instead!"); |
317 | return 1; | |
9ea2ea71 KW |
318 | case 'o': |
319 | options = optarg; | |
320 | break; | |
ea2384d3 FB |
321 | } |
322 | } | |
9230eaf6 | 323 | |
b50cbabc | 324 | /* Get the filename */ |
b8fb60da | 325 | if (optind >= argc) { |
b50cbabc | 326 | help(); |
b8fb60da | 327 | } |
b50cbabc MK |
328 | filename = argv[optind++]; |
329 | ||
1da7cfbd JS |
330 | /* Get image size, if specified */ |
331 | if (optind < argc) { | |
70b4f4bb | 332 | int64_t sval; |
1da7cfbd JS |
333 | sval = strtosz_suffix(argv[optind++], NULL, STRTOSZ_DEFSUFFIX_B); |
334 | if (sval < 0) { | |
15654a6d | 335 | error_report("Invalid image size specified! You may use k, M, G or " |
1da7cfbd | 336 | "T suffixes for "); |
15654a6d | 337 | error_report("kilobytes, megabytes, gigabytes and terabytes."); |
1da7cfbd JS |
338 | ret = -1; |
339 | goto out; | |
340 | } | |
341 | img_size = (uint64_t)sval; | |
342 | } | |
343 | ||
4ac8aacd JS |
344 | if (options && !strcmp(options, "?")) { |
345 | ret = print_block_option_help(filename, fmt); | |
346 | goto out; | |
347 | } | |
348 | ||
f88e1a42 JS |
349 | ret = bdrv_img_create(filename, fmt, base_filename, base_fmt, |
350 | options, img_size, BDRV_O_FLAGS); | |
c2abccec MK |
351 | out: |
352 | if (ret) { | |
353 | return 1; | |
354 | } | |
ea2384d3 FB |
355 | return 0; |
356 | } | |
357 | ||
e076f338 KW |
358 | /* |
359 | * Checks an image for consistency. Exit codes: | |
360 | * | |
361 | * 0 - Check completed, image is good | |
362 | * 1 - Check not completed because of internal errors | |
363 | * 2 - Check completed, image is corrupted | |
364 | * 3 - Check completed, image has leaked clusters, but is good otherwise | |
365 | */ | |
1585969c AL |
366 | static int img_check(int argc, char **argv) |
367 | { | |
368 | int c, ret; | |
369 | const char *filename, *fmt; | |
1585969c | 370 | BlockDriverState *bs; |
e076f338 | 371 | BdrvCheckResult result; |
1585969c AL |
372 | |
373 | fmt = NULL; | |
374 | for(;;) { | |
375 | c = getopt(argc, argv, "f:h"); | |
b8fb60da | 376 | if (c == -1) { |
1585969c | 377 | break; |
b8fb60da | 378 | } |
1585969c | 379 | switch(c) { |
ef87394c | 380 | case '?': |
1585969c AL |
381 | case 'h': |
382 | help(); | |
383 | break; | |
384 | case 'f': | |
385 | fmt = optarg; | |
386 | break; | |
387 | } | |
388 | } | |
b8fb60da | 389 | if (optind >= argc) { |
1585969c | 390 | help(); |
b8fb60da | 391 | } |
1585969c AL |
392 | filename = argv[optind++]; |
393 | ||
adfe078e | 394 | bs = bdrv_new_open(filename, fmt, BDRV_O_FLAGS); |
c2abccec MK |
395 | if (!bs) { |
396 | return 1; | |
397 | } | |
e076f338 KW |
398 | ret = bdrv_check(bs, &result); |
399 | ||
400 | if (ret == -ENOTSUP) { | |
15654a6d | 401 | error_report("This image format does not support checks"); |
e076f338 KW |
402 | bdrv_delete(bs); |
403 | return 1; | |
404 | } | |
405 | ||
406 | if (!(result.corruptions || result.leaks || result.check_errors)) { | |
407 | printf("No errors were found on the image.\n"); | |
408 | } else { | |
409 | if (result.corruptions) { | |
410 | printf("\n%d errors were found on the image.\n" | |
411 | "Data may be corrupted, or further writes to the image " | |
412 | "may corrupt it.\n", | |
413 | result.corruptions); | |
414 | } | |
415 | ||
416 | if (result.leaks) { | |
417 | printf("\n%d leaked clusters were found on the image.\n" | |
418 | "This means waste of disk space, but no harm to data.\n", | |
419 | result.leaks); | |
420 | } | |
421 | ||
422 | if (result.check_errors) { | |
423 | printf("\n%d internal errors have occurred during the check.\n", | |
424 | result.check_errors); | |
1585969c | 425 | } |
1585969c AL |
426 | } |
427 | ||
428 | bdrv_delete(bs); | |
e076f338 KW |
429 | |
430 | if (ret < 0 || result.check_errors) { | |
431 | printf("\nAn error has occurred during the check: %s\n" | |
432 | "The check is not complete and may have missed error.\n", | |
433 | strerror(-ret)); | |
c2abccec MK |
434 | return 1; |
435 | } | |
e076f338 KW |
436 | |
437 | if (result.corruptions) { | |
438 | return 2; | |
439 | } else if (result.leaks) { | |
440 | return 3; | |
441 | } else { | |
442 | return 0; | |
443 | } | |
1585969c AL |
444 | } |
445 | ||
ea2384d3 FB |
446 | static int img_commit(int argc, char **argv) |
447 | { | |
661a0f71 FS |
448 | int c, ret, flags; |
449 | const char *filename, *fmt, *cache; | |
ea2384d3 FB |
450 | BlockDriverState *bs; |
451 | ||
452 | fmt = NULL; | |
661a0f71 | 453 | cache = BDRV_DEFAULT_CACHE; |
ea2384d3 | 454 | for(;;) { |
661a0f71 | 455 | c = getopt(argc, argv, "f:ht:"); |
b8fb60da | 456 | if (c == -1) { |
ea2384d3 | 457 | break; |
b8fb60da | 458 | } |
ea2384d3 | 459 | switch(c) { |
ef87394c | 460 | case '?': |
ea2384d3 FB |
461 | case 'h': |
462 | help(); | |
463 | break; | |
464 | case 'f': | |
465 | fmt = optarg; | |
466 | break; | |
661a0f71 FS |
467 | case 't': |
468 | cache = optarg; | |
469 | break; | |
ea2384d3 FB |
470 | } |
471 | } | |
b8fb60da | 472 | if (optind >= argc) { |
ea2384d3 | 473 | help(); |
b8fb60da | 474 | } |
ea2384d3 FB |
475 | filename = argv[optind++]; |
476 | ||
661a0f71 | 477 | flags = BDRV_O_RDWR; |
c3993cdc | 478 | ret = bdrv_parse_cache_flags(cache, &flags); |
661a0f71 FS |
479 | if (ret < 0) { |
480 | error_report("Invalid cache option: %s", cache); | |
481 | return -1; | |
482 | } | |
483 | ||
484 | bs = bdrv_new_open(filename, fmt, flags); | |
c2abccec MK |
485 | if (!bs) { |
486 | return 1; | |
487 | } | |
ea2384d3 FB |
488 | ret = bdrv_commit(bs); |
489 | switch(ret) { | |
490 | case 0: | |
491 | printf("Image committed.\n"); | |
492 | break; | |
493 | case -ENOENT: | |
15654a6d | 494 | error_report("No disk inserted"); |
ea2384d3 FB |
495 | break; |
496 | case -EACCES: | |
15654a6d | 497 | error_report("Image is read-only"); |
ea2384d3 FB |
498 | break; |
499 | case -ENOTSUP: | |
15654a6d | 500 | error_report("Image is already committed"); |
ea2384d3 FB |
501 | break; |
502 | default: | |
15654a6d | 503 | error_report("Error while committing image"); |
ea2384d3 FB |
504 | break; |
505 | } | |
506 | ||
507 | bdrv_delete(bs); | |
c2abccec MK |
508 | if (ret) { |
509 | return 1; | |
510 | } | |
ea2384d3 FB |
511 | return 0; |
512 | } | |
513 | ||
f6a00aa1 DK |
514 | /* |
515 | * Checks whether the sector is not a zero sector. | |
516 | * | |
517 | * Attention! The len must be a multiple of 4 * sizeof(long) due to | |
518 | * restriction of optimizations in this function. | |
519 | */ | |
ea2384d3 FB |
520 | static int is_not_zero(const uint8_t *sector, int len) |
521 | { | |
f6a00aa1 DK |
522 | /* |
523 | * Use long as the biggest available internal data type that fits into the | |
524 | * CPU register and unroll the loop to smooth out the effect of memory | |
525 | * latency. | |
526 | */ | |
527 | ||
ea2384d3 | 528 | int i; |
f6a00aa1 DK |
529 | long d0, d1, d2, d3; |
530 | const long * const data = (const long *) sector; | |
531 | ||
532 | len /= sizeof(long); | |
533 | ||
534 | for(i = 0; i < len; i += 4) { | |
535 | d0 = data[i + 0]; | |
536 | d1 = data[i + 1]; | |
537 | d2 = data[i + 2]; | |
538 | d3 = data[i + 3]; | |
539 | ||
540 | if (d0 || d1 || d2 || d3) { | |
ea2384d3 | 541 | return 1; |
f6a00aa1 | 542 | } |
ea2384d3 | 543 | } |
f6a00aa1 | 544 | |
ea2384d3 FB |
545 | return 0; |
546 | } | |
547 | ||
f58c7b35 TS |
548 | /* |
549 | * Returns true iff the first sector pointed to by 'buf' contains at least | |
550 | * a non-NUL byte. | |
551 | * | |
552 | * 'pnum' is set to the number of sectors (including and immediately following | |
553 | * the first one) that are known to be in the same allocated/unallocated state. | |
554 | */ | |
ea2384d3 FB |
555 | static int is_allocated_sectors(const uint8_t *buf, int n, int *pnum) |
556 | { | |
557 | int v, i; | |
558 | ||
559 | if (n <= 0) { | |
560 | *pnum = 0; | |
561 | return 0; | |
562 | } | |
563 | v = is_not_zero(buf, 512); | |
564 | for(i = 1; i < n; i++) { | |
565 | buf += 512; | |
566 | if (v != is_not_zero(buf, 512)) | |
567 | break; | |
568 | } | |
569 | *pnum = i; | |
570 | return v; | |
571 | } | |
572 | ||
3e85c6fd KW |
573 | /* |
574 | * Compares two buffers sector by sector. Returns 0 if the first sector of both | |
575 | * buffers matches, non-zero otherwise. | |
576 | * | |
577 | * pnum is set to the number of sectors (including and immediately following | |
578 | * the first one) that are known to have the same comparison result | |
579 | */ | |
580 | static int compare_sectors(const uint8_t *buf1, const uint8_t *buf2, int n, | |
581 | int *pnum) | |
582 | { | |
583 | int res, i; | |
584 | ||
585 | if (n <= 0) { | |
586 | *pnum = 0; | |
587 | return 0; | |
588 | } | |
589 | ||
590 | res = !!memcmp(buf1, buf2, 512); | |
591 | for(i = 1; i < n; i++) { | |
592 | buf1 += 512; | |
593 | buf2 += 512; | |
594 | ||
595 | if (!!memcmp(buf1, buf2, 512) != res) { | |
596 | break; | |
597 | } | |
598 | } | |
599 | ||
600 | *pnum = i; | |
601 | return res; | |
602 | } | |
603 | ||
80ee15a6 | 604 | #define IO_BUF_SIZE (2 * 1024 * 1024) |
ea2384d3 FB |
605 | |
606 | static int img_convert(int argc, char **argv) | |
607 | { | |
eec77d9e | 608 | int c, ret = 0, n, n1, bs_n, bs_i, compress, cluster_size, cluster_sectors; |
661a0f71 FS |
609 | int progress = 0, flags; |
610 | const char *fmt, *out_fmt, *cache, *out_baseimg, *out_filename; | |
b50cbabc | 611 | BlockDriver *drv, *proto_drv; |
c2abccec | 612 | BlockDriverState **bs = NULL, *out_bs = NULL; |
96b8f136 TS |
613 | int64_t total_sectors, nb_sectors, sector_num, bs_offset; |
614 | uint64_t bs_sectors; | |
c2abccec | 615 | uint8_t * buf = NULL; |
ea2384d3 | 616 | const uint8_t *buf1; |
faea38e7 | 617 | BlockDriverInfo bdi; |
b50cbabc | 618 | QEMUOptionParameter *param = NULL, *create_options = NULL; |
a18953fb | 619 | QEMUOptionParameter *out_baseimg_param; |
efa84d43 | 620 | char *options = NULL; |
51ef6727 | 621 | const char *snapshot_name = NULL; |
6b837bc4 | 622 | float local_progress; |
ea2384d3 FB |
623 | |
624 | fmt = NULL; | |
625 | out_fmt = "raw"; | |
661a0f71 | 626 | cache = "unsafe"; |
f58c7b35 | 627 | out_baseimg = NULL; |
eec77d9e | 628 | compress = 0; |
ea2384d3 | 629 | for(;;) { |
661a0f71 | 630 | c = getopt(argc, argv, "f:O:B:s:hce6o:pt:"); |
b8fb60da | 631 | if (c == -1) { |
ea2384d3 | 632 | break; |
b8fb60da | 633 | } |
ea2384d3 | 634 | switch(c) { |
ef87394c | 635 | case '?': |
ea2384d3 FB |
636 | case 'h': |
637 | help(); | |
638 | break; | |
639 | case 'f': | |
640 | fmt = optarg; | |
641 | break; | |
642 | case 'O': | |
643 | out_fmt = optarg; | |
644 | break; | |
f58c7b35 TS |
645 | case 'B': |
646 | out_baseimg = optarg; | |
647 | break; | |
ea2384d3 | 648 | case 'c': |
eec77d9e | 649 | compress = 1; |
ea2384d3 FB |
650 | break; |
651 | case 'e': | |
9d42e15d | 652 | error_report("option -e is deprecated, please use \'-o " |
eec77d9e JS |
653 | "encryption\' instead!"); |
654 | return 1; | |
ec36ba14 | 655 | case '6': |
9d42e15d | 656 | error_report("option -6 is deprecated, please use \'-o " |
eec77d9e JS |
657 | "compat6\' instead!"); |
658 | return 1; | |
efa84d43 KW |
659 | case 'o': |
660 | options = optarg; | |
661 | break; | |
51ef6727 | 662 | case 's': |
663 | snapshot_name = optarg; | |
664 | break; | |
6b837bc4 JS |
665 | case 'p': |
666 | progress = 1; | |
667 | break; | |
661a0f71 FS |
668 | case 't': |
669 | cache = optarg; | |
670 | break; | |
ea2384d3 FB |
671 | } |
672 | } | |
3b46e624 | 673 | |
926c2d23 | 674 | bs_n = argc - optind - 1; |
b8fb60da JS |
675 | if (bs_n < 1) { |
676 | help(); | |
677 | } | |
926c2d23 AZ |
678 | |
679 | out_filename = argv[argc - 1]; | |
f58c7b35 | 680 | |
4ac8aacd JS |
681 | if (options && !strcmp(options, "?")) { |
682 | ret = print_block_option_help(out_filename, out_fmt); | |
683 | goto out; | |
684 | } | |
685 | ||
c2abccec | 686 | if (bs_n > 1 && out_baseimg) { |
15654a6d JS |
687 | error_report("-B makes no sense when concatenating multiple input " |
688 | "images"); | |
31ca34b8 JS |
689 | ret = -1; |
690 | goto out; | |
c2abccec | 691 | } |
926c2d23 | 692 | |
6b837bc4 JS |
693 | qemu_progress_init(progress, 2.0); |
694 | qemu_progress_print(0, 100); | |
695 | ||
7267c094 | 696 | bs = g_malloc0(bs_n * sizeof(BlockDriverState *)); |
926c2d23 AZ |
697 | |
698 | total_sectors = 0; | |
699 | for (bs_i = 0; bs_i < bs_n; bs_i++) { | |
adfe078e | 700 | bs[bs_i] = bdrv_new_open(argv[optind + bs_i], fmt, BDRV_O_FLAGS); |
c2abccec | 701 | if (!bs[bs_i]) { |
15654a6d | 702 | error_report("Could not open '%s'", argv[optind + bs_i]); |
c2abccec MK |
703 | ret = -1; |
704 | goto out; | |
705 | } | |
926c2d23 AZ |
706 | bdrv_get_geometry(bs[bs_i], &bs_sectors); |
707 | total_sectors += bs_sectors; | |
708 | } | |
ea2384d3 | 709 | |
51ef6727 | 710 | if (snapshot_name != NULL) { |
711 | if (bs_n > 1) { | |
6daf194d | 712 | error_report("No support for concatenating multiple snapshot"); |
51ef6727 | 713 | ret = -1; |
714 | goto out; | |
715 | } | |
716 | if (bdrv_snapshot_load_tmp(bs[0], snapshot_name) < 0) { | |
6daf194d | 717 | error_report("Failed to load snapshot"); |
51ef6727 | 718 | ret = -1; |
719 | goto out; | |
720 | } | |
721 | } | |
722 | ||
efa84d43 | 723 | /* Find driver and parse its options */ |
ea2384d3 | 724 | drv = bdrv_find_format(out_fmt); |
c2abccec | 725 | if (!drv) { |
15654a6d | 726 | error_report("Unknown file format '%s'", out_fmt); |
c2abccec MK |
727 | ret = -1; |
728 | goto out; | |
729 | } | |
efa84d43 | 730 | |
b50cbabc | 731 | proto_drv = bdrv_find_protocol(out_filename); |
c2abccec | 732 | if (!proto_drv) { |
15654a6d | 733 | error_report("Unknown protocol '%s'", out_filename); |
c2abccec MK |
734 | ret = -1; |
735 | goto out; | |
736 | } | |
b50cbabc MK |
737 | |
738 | create_options = append_option_parameters(create_options, | |
739 | drv->create_options); | |
740 | create_options = append_option_parameters(create_options, | |
741 | proto_drv->create_options); | |
db08adf5 | 742 | |
efa84d43 | 743 | if (options) { |
b50cbabc | 744 | param = parse_option_parameters(options, create_options, param); |
efa84d43 | 745 | if (param == NULL) { |
15654a6d | 746 | error_report("Invalid options for file format '%s'.", out_fmt); |
c2abccec MK |
747 | ret = -1; |
748 | goto out; | |
efa84d43 KW |
749 | } |
750 | } else { | |
b50cbabc | 751 | param = parse_option_parameters("", create_options, param); |
efa84d43 KW |
752 | } |
753 | ||
754 | set_option_parameter_int(param, BLOCK_OPT_SIZE, total_sectors * 512); | |
eec77d9e | 755 | ret = add_old_style_options(out_fmt, param, out_baseimg, NULL); |
c2abccec MK |
756 | if (ret < 0) { |
757 | goto out; | |
758 | } | |
efa84d43 | 759 | |
a18953fb KW |
760 | /* Get backing file name if -o backing_file was used */ |
761 | out_baseimg_param = get_option_parameter(param, BLOCK_OPT_BACKING_FILE); | |
762 | if (out_baseimg_param) { | |
763 | out_baseimg = out_baseimg_param->value.s; | |
764 | } | |
765 | ||
efa84d43 | 766 | /* Check if compression is supported */ |
eec77d9e | 767 | if (compress) { |
efa84d43 KW |
768 | QEMUOptionParameter *encryption = |
769 | get_option_parameter(param, BLOCK_OPT_ENCRYPT); | |
770 | ||
771 | if (!drv->bdrv_write_compressed) { | |
15654a6d | 772 | error_report("Compression not supported for this file format"); |
c2abccec MK |
773 | ret = -1; |
774 | goto out; | |
efa84d43 KW |
775 | } |
776 | ||
777 | if (encryption && encryption->value.n) { | |
15654a6d JS |
778 | error_report("Compression and encryption not supported at " |
779 | "the same time"); | |
c2abccec MK |
780 | ret = -1; |
781 | goto out; | |
efa84d43 KW |
782 | } |
783 | } | |
784 | ||
785 | /* Create the new image */ | |
786 | ret = bdrv_create(drv, out_filename, param); | |
ea2384d3 FB |
787 | if (ret < 0) { |
788 | if (ret == -ENOTSUP) { | |
15654a6d JS |
789 | error_report("Formatting not supported for file format '%s'", |
790 | out_fmt); | |
6e9ea0c0 | 791 | } else if (ret == -EFBIG) { |
15654a6d JS |
792 | error_report("The image size is too large for file format '%s'", |
793 | out_fmt); | |
ea2384d3 | 794 | } else { |
15654a6d JS |
795 | error_report("%s: error while converting %s: %s", |
796 | out_filename, out_fmt, strerror(-ret)); | |
ea2384d3 | 797 | } |
c2abccec | 798 | goto out; |
ea2384d3 | 799 | } |
3b46e624 | 800 | |
661a0f71 | 801 | flags = BDRV_O_RDWR; |
c3993cdc | 802 | ret = bdrv_parse_cache_flags(cache, &flags); |
661a0f71 FS |
803 | if (ret < 0) { |
804 | error_report("Invalid cache option: %s", cache); | |
805 | return -1; | |
806 | } | |
807 | ||
808 | out_bs = bdrv_new_open(out_filename, out_fmt, flags); | |
c2abccec MK |
809 | if (!out_bs) { |
810 | ret = -1; | |
811 | goto out; | |
812 | } | |
ea2384d3 | 813 | |
926c2d23 AZ |
814 | bs_i = 0; |
815 | bs_offset = 0; | |
816 | bdrv_get_geometry(bs[0], &bs_sectors); | |
7267c094 | 817 | buf = g_malloc(IO_BUF_SIZE); |
926c2d23 | 818 | |
eec77d9e | 819 | if (compress) { |
c2abccec MK |
820 | ret = bdrv_get_info(out_bs, &bdi); |
821 | if (ret < 0) { | |
15654a6d | 822 | error_report("could not get block driver info"); |
c2abccec MK |
823 | goto out; |
824 | } | |
faea38e7 | 825 | cluster_size = bdi.cluster_size; |
c2abccec | 826 | if (cluster_size <= 0 || cluster_size > IO_BUF_SIZE) { |
15654a6d | 827 | error_report("invalid cluster size"); |
c2abccec MK |
828 | ret = -1; |
829 | goto out; | |
830 | } | |
ea2384d3 FB |
831 | cluster_sectors = cluster_size >> 9; |
832 | sector_num = 0; | |
6b837bc4 JS |
833 | |
834 | nb_sectors = total_sectors; | |
835 | local_progress = (float)100 / | |
4ee96418 | 836 | (nb_sectors / MIN(nb_sectors, cluster_sectors)); |
6b837bc4 | 837 | |
ea2384d3 | 838 | for(;;) { |
926c2d23 AZ |
839 | int64_t bs_num; |
840 | int remainder; | |
841 | uint8_t *buf2; | |
842 | ||
ea2384d3 FB |
843 | nb_sectors = total_sectors - sector_num; |
844 | if (nb_sectors <= 0) | |
845 | break; | |
846 | if (nb_sectors >= cluster_sectors) | |
847 | n = cluster_sectors; | |
848 | else | |
849 | n = nb_sectors; | |
926c2d23 AZ |
850 | |
851 | bs_num = sector_num - bs_offset; | |
852 | assert (bs_num >= 0); | |
853 | remainder = n; | |
854 | buf2 = buf; | |
855 | while (remainder > 0) { | |
856 | int nlow; | |
857 | while (bs_num == bs_sectors) { | |
858 | bs_i++; | |
859 | assert (bs_i < bs_n); | |
860 | bs_offset += bs_sectors; | |
861 | bdrv_get_geometry(bs[bs_i], &bs_sectors); | |
862 | bs_num = 0; | |
0bfcd599 BS |
863 | /* printf("changing part: sector_num=%" PRId64 ", " |
864 | "bs_i=%d, bs_offset=%" PRId64 ", bs_sectors=%" PRId64 | |
865 | "\n", sector_num, bs_i, bs_offset, bs_sectors); */ | |
926c2d23 AZ |
866 | } |
867 | assert (bs_num < bs_sectors); | |
868 | ||
869 | nlow = (remainder > bs_sectors - bs_num) ? bs_sectors - bs_num : remainder; | |
870 | ||
c2abccec MK |
871 | ret = bdrv_read(bs[bs_i], bs_num, buf2, nlow); |
872 | if (ret < 0) { | |
15654a6d | 873 | error_report("error while reading"); |
c2abccec MK |
874 | goto out; |
875 | } | |
926c2d23 AZ |
876 | |
877 | buf2 += nlow * 512; | |
878 | bs_num += nlow; | |
879 | ||
880 | remainder -= nlow; | |
881 | } | |
882 | assert (remainder == 0); | |
883 | ||
b8fb60da | 884 | if (n < cluster_sectors) { |
ea2384d3 | 885 | memset(buf + n * 512, 0, cluster_size - n * 512); |
b8fb60da | 886 | } |
ea2384d3 | 887 | if (is_not_zero(buf, cluster_size)) { |
c2abccec MK |
888 | ret = bdrv_write_compressed(out_bs, sector_num, buf, |
889 | cluster_sectors); | |
890 | if (ret != 0) { | |
15654a6d | 891 | error_report("error while compressing sector %" PRId64, |
ec3757de | 892 | sector_num); |
c2abccec MK |
893 | goto out; |
894 | } | |
ea2384d3 FB |
895 | } |
896 | sector_num += n; | |
6b837bc4 | 897 | qemu_progress_print(local_progress, 100); |
ea2384d3 | 898 | } |
faea38e7 FB |
899 | /* signal EOF to align */ |
900 | bdrv_write_compressed(out_bs, 0, NULL, 0); | |
ea2384d3 | 901 | } else { |
f2feebbd KW |
902 | int has_zero_init = bdrv_has_zero_init(out_bs); |
903 | ||
f58c7b35 | 904 | sector_num = 0; // total number of sectors converted so far |
6b837bc4 JS |
905 | nb_sectors = total_sectors - sector_num; |
906 | local_progress = (float)100 / | |
4ee96418 | 907 | (nb_sectors / MIN(nb_sectors, IO_BUF_SIZE / 512)); |
6b837bc4 | 908 | |
ea2384d3 FB |
909 | for(;;) { |
910 | nb_sectors = total_sectors - sector_num; | |
b8fb60da | 911 | if (nb_sectors <= 0) { |
ea2384d3 | 912 | break; |
b8fb60da JS |
913 | } |
914 | if (nb_sectors >= (IO_BUF_SIZE / 512)) { | |
ea2384d3 | 915 | n = (IO_BUF_SIZE / 512); |
b8fb60da | 916 | } else { |
ea2384d3 | 917 | n = nb_sectors; |
b8fb60da | 918 | } |
926c2d23 AZ |
919 | |
920 | while (sector_num - bs_offset >= bs_sectors) { | |
921 | bs_i ++; | |
922 | assert (bs_i < bs_n); | |
923 | bs_offset += bs_sectors; | |
924 | bdrv_get_geometry(bs[bs_i], &bs_sectors); | |
0bfcd599 BS |
925 | /* printf("changing part: sector_num=%" PRId64 ", bs_i=%d, " |
926 | "bs_offset=%" PRId64 ", bs_sectors=%" PRId64 "\n", | |
926c2d23 AZ |
927 | sector_num, bs_i, bs_offset, bs_sectors); */ |
928 | } | |
929 | ||
b8fb60da | 930 | if (n > bs_offset + bs_sectors - sector_num) { |
926c2d23 | 931 | n = bs_offset + bs_sectors - sector_num; |
b8fb60da | 932 | } |
926c2d23 | 933 | |
f2feebbd | 934 | if (has_zero_init) { |
d032044f AS |
935 | /* If the output image is being created as a copy on write image, |
936 | assume that sectors which are unallocated in the input image | |
937 | are present in both the output's and input's base images (no | |
938 | need to copy them). */ | |
939 | if (out_baseimg) { | |
940 | if (!bdrv_is_allocated(bs[bs_i], sector_num - bs_offset, | |
941 | n, &n1)) { | |
942 | sector_num += n1; | |
943 | continue; | |
944 | } | |
945 | /* The next 'n1' sectors are allocated in the input image. Copy | |
946 | only those as they may be followed by unallocated sectors. */ | |
947 | n = n1; | |
93c65b47 | 948 | } |
93c65b47 AL |
949 | } else { |
950 | n1 = n; | |
f58c7b35 TS |
951 | } |
952 | ||
c2abccec MK |
953 | ret = bdrv_read(bs[bs_i], sector_num - bs_offset, buf, n); |
954 | if (ret < 0) { | |
15654a6d | 955 | error_report("error while reading"); |
c2abccec MK |
956 | goto out; |
957 | } | |
ea2384d3 FB |
958 | /* NOTE: at the same time we convert, we do not write zero |
959 | sectors to have a chance to compress the image. Ideally, we | |
960 | should add a specific call to have the info to go faster */ | |
961 | buf1 = buf; | |
962 | while (n > 0) { | |
f58c7b35 TS |
963 | /* If the output image is being created as a copy on write image, |
964 | copy all sectors even the ones containing only NUL bytes, | |
93c65b47 AL |
965 | because they may differ from the sectors in the base image. |
966 | ||
967 | If the output is to a host device, we also write out | |
968 | sectors that are entirely 0, since whatever data was | |
969 | already there is garbage, not 0s. */ | |
f2feebbd | 970 | if (!has_zero_init || out_baseimg || |
93c65b47 | 971 | is_allocated_sectors(buf1, n, &n1)) { |
c2abccec MK |
972 | ret = bdrv_write(out_bs, sector_num, buf1, n1); |
973 | if (ret < 0) { | |
15654a6d | 974 | error_report("error while writing"); |
c2abccec MK |
975 | goto out; |
976 | } | |
ea2384d3 FB |
977 | } |
978 | sector_num += n1; | |
979 | n -= n1; | |
980 | buf1 += n1 * 512; | |
981 | } | |
6b837bc4 | 982 | qemu_progress_print(local_progress, 100); |
ea2384d3 FB |
983 | } |
984 | } | |
c2abccec | 985 | out: |
6b837bc4 | 986 | qemu_progress_end(); |
c2abccec MK |
987 | free_option_parameters(create_options); |
988 | free_option_parameters(param); | |
7267c094 | 989 | g_free(buf); |
c2abccec MK |
990 | if (out_bs) { |
991 | bdrv_delete(out_bs); | |
992 | } | |
31ca34b8 JS |
993 | if (bs) { |
994 | for (bs_i = 0; bs_i < bs_n; bs_i++) { | |
995 | if (bs[bs_i]) { | |
996 | bdrv_delete(bs[bs_i]); | |
997 | } | |
c2abccec | 998 | } |
7267c094 | 999 | g_free(bs); |
c2abccec | 1000 | } |
c2abccec MK |
1001 | if (ret) { |
1002 | return 1; | |
1003 | } | |
ea2384d3 FB |
1004 | return 0; |
1005 | } | |
1006 | ||
57d1a2b6 | 1007 | |
faea38e7 FB |
1008 | static void dump_snapshots(BlockDriverState *bs) |
1009 | { | |
1010 | QEMUSnapshotInfo *sn_tab, *sn; | |
1011 | int nb_sns, i; | |
1012 | char buf[256]; | |
1013 | ||
1014 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
1015 | if (nb_sns <= 0) | |
1016 | return; | |
1017 | printf("Snapshot list:\n"); | |
1018 | printf("%s\n", bdrv_snapshot_dump(buf, sizeof(buf), NULL)); | |
1019 | for(i = 0; i < nb_sns; i++) { | |
1020 | sn = &sn_tab[i]; | |
1021 | printf("%s\n", bdrv_snapshot_dump(buf, sizeof(buf), sn)); | |
1022 | } | |
7267c094 | 1023 | g_free(sn_tab); |
faea38e7 FB |
1024 | } |
1025 | ||
ea2384d3 FB |
1026 | static int img_info(int argc, char **argv) |
1027 | { | |
1028 | int c; | |
1029 | const char *filename, *fmt; | |
ea2384d3 FB |
1030 | BlockDriverState *bs; |
1031 | char fmt_name[128], size_buf[128], dsize_buf[128]; | |
96b8f136 TS |
1032 | uint64_t total_sectors; |
1033 | int64_t allocated_size; | |
93b6b2a3 FB |
1034 | char backing_filename[1024]; |
1035 | char backing_filename2[1024]; | |
faea38e7 | 1036 | BlockDriverInfo bdi; |
ea2384d3 FB |
1037 | |
1038 | fmt = NULL; | |
1039 | for(;;) { | |
1040 | c = getopt(argc, argv, "f:h"); | |
b8fb60da | 1041 | if (c == -1) { |
ea2384d3 | 1042 | break; |
b8fb60da | 1043 | } |
ea2384d3 | 1044 | switch(c) { |
ef87394c | 1045 | case '?': |
ea2384d3 FB |
1046 | case 'h': |
1047 | help(); | |
1048 | break; | |
1049 | case 'f': | |
1050 | fmt = optarg; | |
1051 | break; | |
1052 | } | |
1053 | } | |
b8fb60da | 1054 | if (optind >= argc) { |
ea2384d3 | 1055 | help(); |
b8fb60da | 1056 | } |
ea2384d3 FB |
1057 | filename = argv[optind++]; |
1058 | ||
adfe078e | 1059 | bs = bdrv_new_open(filename, fmt, BDRV_O_FLAGS | BDRV_O_NO_BACKING); |
c2abccec MK |
1060 | if (!bs) { |
1061 | return 1; | |
1062 | } | |
ea2384d3 FB |
1063 | bdrv_get_format(bs, fmt_name, sizeof(fmt_name)); |
1064 | bdrv_get_geometry(bs, &total_sectors); | |
1065 | get_human_readable_size(size_buf, sizeof(size_buf), total_sectors * 512); | |
4a1d5e1f | 1066 | allocated_size = bdrv_get_allocated_file_size(bs); |
b8fb60da | 1067 | if (allocated_size < 0) { |
a10ea30b | 1068 | snprintf(dsize_buf, sizeof(dsize_buf), "unavailable"); |
b8fb60da | 1069 | } else { |
5fafdf24 | 1070 | get_human_readable_size(dsize_buf, sizeof(dsize_buf), |
de167e41 | 1071 | allocated_size); |
b8fb60da | 1072 | } |
ea2384d3 FB |
1073 | printf("image: %s\n" |
1074 | "file format: %s\n" | |
ec3757de | 1075 | "virtual size: %s (%" PRId64 " bytes)\n" |
ea2384d3 | 1076 | "disk size: %s\n", |
5fafdf24 | 1077 | filename, fmt_name, size_buf, |
ec3757de | 1078 | (total_sectors * 512), |
ea2384d3 | 1079 | dsize_buf); |
b8fb60da | 1080 | if (bdrv_is_encrypted(bs)) { |
ea2384d3 | 1081 | printf("encrypted: yes\n"); |
b8fb60da | 1082 | } |
faea38e7 | 1083 | if (bdrv_get_info(bs, &bdi) >= 0) { |
b8fb60da | 1084 | if (bdi.cluster_size != 0) { |
faea38e7 | 1085 | printf("cluster_size: %d\n", bdi.cluster_size); |
b8fb60da | 1086 | } |
faea38e7 | 1087 | } |
93b6b2a3 | 1088 | bdrv_get_backing_filename(bs, backing_filename, sizeof(backing_filename)); |
faea38e7 | 1089 | if (backing_filename[0] != '\0') { |
93b6b2a3 FB |
1090 | path_combine(backing_filename2, sizeof(backing_filename2), |
1091 | filename, backing_filename); | |
5fafdf24 | 1092 | printf("backing file: %s (actual path: %s)\n", |
93b6b2a3 FB |
1093 | backing_filename, |
1094 | backing_filename2); | |
faea38e7 FB |
1095 | } |
1096 | dump_snapshots(bs); | |
ea2384d3 FB |
1097 | bdrv_delete(bs); |
1098 | return 0; | |
1099 | } | |
1100 | ||
f7b4a940 AL |
1101 | #define SNAPSHOT_LIST 1 |
1102 | #define SNAPSHOT_CREATE 2 | |
1103 | #define SNAPSHOT_APPLY 3 | |
1104 | #define SNAPSHOT_DELETE 4 | |
1105 | ||
153859be | 1106 | static int img_snapshot(int argc, char **argv) |
f7b4a940 AL |
1107 | { |
1108 | BlockDriverState *bs; | |
1109 | QEMUSnapshotInfo sn; | |
1110 | char *filename, *snapshot_name = NULL; | |
c2abccec | 1111 | int c, ret = 0, bdrv_oflags; |
f7b4a940 AL |
1112 | int action = 0; |
1113 | qemu_timeval tv; | |
1114 | ||
710da702 | 1115 | bdrv_oflags = BDRV_O_FLAGS | BDRV_O_RDWR; |
f7b4a940 AL |
1116 | /* Parse commandline parameters */ |
1117 | for(;;) { | |
1118 | c = getopt(argc, argv, "la:c:d:h"); | |
b8fb60da | 1119 | if (c == -1) { |
f7b4a940 | 1120 | break; |
b8fb60da | 1121 | } |
f7b4a940 | 1122 | switch(c) { |
ef87394c | 1123 | case '?': |
f7b4a940 AL |
1124 | case 'h': |
1125 | help(); | |
153859be | 1126 | return 0; |
f7b4a940 AL |
1127 | case 'l': |
1128 | if (action) { | |
1129 | help(); | |
153859be | 1130 | return 0; |
f7b4a940 AL |
1131 | } |
1132 | action = SNAPSHOT_LIST; | |
f5edb014 | 1133 | bdrv_oflags &= ~BDRV_O_RDWR; /* no need for RW */ |
f7b4a940 AL |
1134 | break; |
1135 | case 'a': | |
1136 | if (action) { | |
1137 | help(); | |
153859be | 1138 | return 0; |
f7b4a940 AL |
1139 | } |
1140 | action = SNAPSHOT_APPLY; | |
1141 | snapshot_name = optarg; | |
1142 | break; | |
1143 | case 'c': | |
1144 | if (action) { | |
1145 | help(); | |
153859be | 1146 | return 0; |
f7b4a940 AL |
1147 | } |
1148 | action = SNAPSHOT_CREATE; | |
1149 | snapshot_name = optarg; | |
1150 | break; | |
1151 | case 'd': | |
1152 | if (action) { | |
1153 | help(); | |
153859be | 1154 | return 0; |
f7b4a940 AL |
1155 | } |
1156 | action = SNAPSHOT_DELETE; | |
1157 | snapshot_name = optarg; | |
1158 | break; | |
1159 | } | |
1160 | } | |
1161 | ||
b8fb60da | 1162 | if (optind >= argc) { |
f7b4a940 | 1163 | help(); |
b8fb60da | 1164 | } |
f7b4a940 AL |
1165 | filename = argv[optind++]; |
1166 | ||
1167 | /* Open the image */ | |
f163d073 | 1168 | bs = bdrv_new_open(filename, NULL, bdrv_oflags); |
c2abccec MK |
1169 | if (!bs) { |
1170 | return 1; | |
1171 | } | |
f7b4a940 AL |
1172 | |
1173 | /* Perform the requested action */ | |
1174 | switch(action) { | |
1175 | case SNAPSHOT_LIST: | |
1176 | dump_snapshots(bs); | |
1177 | break; | |
1178 | ||
1179 | case SNAPSHOT_CREATE: | |
1180 | memset(&sn, 0, sizeof(sn)); | |
1181 | pstrcpy(sn.name, sizeof(sn.name), snapshot_name); | |
1182 | ||
1183 | qemu_gettimeofday(&tv); | |
1184 | sn.date_sec = tv.tv_sec; | |
1185 | sn.date_nsec = tv.tv_usec * 1000; | |
1186 | ||
1187 | ret = bdrv_snapshot_create(bs, &sn); | |
b8fb60da | 1188 | if (ret) { |
15654a6d | 1189 | error_report("Could not create snapshot '%s': %d (%s)", |
f7b4a940 | 1190 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 1191 | } |
f7b4a940 AL |
1192 | break; |
1193 | ||
1194 | case SNAPSHOT_APPLY: | |
1195 | ret = bdrv_snapshot_goto(bs, snapshot_name); | |
b8fb60da | 1196 | if (ret) { |
15654a6d | 1197 | error_report("Could not apply snapshot '%s': %d (%s)", |
f7b4a940 | 1198 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 1199 | } |
f7b4a940 AL |
1200 | break; |
1201 | ||
1202 | case SNAPSHOT_DELETE: | |
1203 | ret = bdrv_snapshot_delete(bs, snapshot_name); | |
b8fb60da | 1204 | if (ret) { |
15654a6d | 1205 | error_report("Could not delete snapshot '%s': %d (%s)", |
f7b4a940 | 1206 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 1207 | } |
f7b4a940 AL |
1208 | break; |
1209 | } | |
1210 | ||
1211 | /* Cleanup */ | |
1212 | bdrv_delete(bs); | |
c2abccec MK |
1213 | if (ret) { |
1214 | return 1; | |
1215 | } | |
153859be | 1216 | return 0; |
f7b4a940 AL |
1217 | } |
1218 | ||
3e85c6fd KW |
1219 | static int img_rebase(int argc, char **argv) |
1220 | { | |
c2abccec | 1221 | BlockDriverState *bs, *bs_old_backing = NULL, *bs_new_backing = NULL; |
f163d073 | 1222 | BlockDriver *old_backing_drv, *new_backing_drv; |
3e85c6fd | 1223 | char *filename; |
661a0f71 | 1224 | const char *fmt, *cache, *out_basefmt, *out_baseimg; |
3e85c6fd KW |
1225 | int c, flags, ret; |
1226 | int unsafe = 0; | |
6b837bc4 | 1227 | int progress = 0; |
3e85c6fd KW |
1228 | |
1229 | /* Parse commandline parameters */ | |
e53dbee0 | 1230 | fmt = NULL; |
661a0f71 | 1231 | cache = BDRV_DEFAULT_CACHE; |
3e85c6fd KW |
1232 | out_baseimg = NULL; |
1233 | out_basefmt = NULL; | |
3e85c6fd | 1234 | for(;;) { |
661a0f71 | 1235 | c = getopt(argc, argv, "uhf:F:b:pt:"); |
b8fb60da | 1236 | if (c == -1) { |
3e85c6fd | 1237 | break; |
b8fb60da | 1238 | } |
3e85c6fd | 1239 | switch(c) { |
ef87394c | 1240 | case '?': |
3e85c6fd KW |
1241 | case 'h': |
1242 | help(); | |
1243 | return 0; | |
e53dbee0 KW |
1244 | case 'f': |
1245 | fmt = optarg; | |
1246 | break; | |
3e85c6fd KW |
1247 | case 'F': |
1248 | out_basefmt = optarg; | |
1249 | break; | |
1250 | case 'b': | |
1251 | out_baseimg = optarg; | |
1252 | break; | |
1253 | case 'u': | |
1254 | unsafe = 1; | |
1255 | break; | |
6b837bc4 JS |
1256 | case 'p': |
1257 | progress = 1; | |
1258 | break; | |
661a0f71 FS |
1259 | case 't': |
1260 | cache = optarg; | |
1261 | break; | |
3e85c6fd KW |
1262 | } |
1263 | } | |
1264 | ||
9a9d9dba | 1265 | if ((optind >= argc) || (!unsafe && !out_baseimg)) { |
3e85c6fd | 1266 | help(); |
b8fb60da | 1267 | } |
3e85c6fd KW |
1268 | filename = argv[optind++]; |
1269 | ||
6b837bc4 JS |
1270 | qemu_progress_init(progress, 2.0); |
1271 | qemu_progress_print(0, 100); | |
1272 | ||
661a0f71 | 1273 | flags = BDRV_O_RDWR | (unsafe ? BDRV_O_NO_BACKING : 0); |
c3993cdc | 1274 | ret = bdrv_parse_cache_flags(cache, &flags); |
661a0f71 FS |
1275 | if (ret < 0) { |
1276 | error_report("Invalid cache option: %s", cache); | |
1277 | return -1; | |
1278 | } | |
1279 | ||
3e85c6fd KW |
1280 | /* |
1281 | * Open the images. | |
1282 | * | |
1283 | * Ignore the old backing file for unsafe rebase in case we want to correct | |
1284 | * the reference to a renamed or moved backing file. | |
1285 | */ | |
f163d073 | 1286 | bs = bdrv_new_open(filename, fmt, flags); |
c2abccec MK |
1287 | if (!bs) { |
1288 | return 1; | |
1289 | } | |
3e85c6fd KW |
1290 | |
1291 | /* Find the right drivers for the backing files */ | |
1292 | old_backing_drv = NULL; | |
1293 | new_backing_drv = NULL; | |
1294 | ||
1295 | if (!unsafe && bs->backing_format[0] != '\0') { | |
1296 | old_backing_drv = bdrv_find_format(bs->backing_format); | |
1297 | if (old_backing_drv == NULL) { | |
15654a6d | 1298 | error_report("Invalid format name: '%s'", bs->backing_format); |
c2abccec MK |
1299 | ret = -1; |
1300 | goto out; | |
3e85c6fd KW |
1301 | } |
1302 | } | |
1303 | ||
1304 | if (out_basefmt != NULL) { | |
1305 | new_backing_drv = bdrv_find_format(out_basefmt); | |
1306 | if (new_backing_drv == NULL) { | |
15654a6d | 1307 | error_report("Invalid format name: '%s'", out_basefmt); |
c2abccec MK |
1308 | ret = -1; |
1309 | goto out; | |
3e85c6fd KW |
1310 | } |
1311 | } | |
1312 | ||
1313 | /* For safe rebasing we need to compare old and new backing file */ | |
1314 | if (unsafe) { | |
1315 | /* Make the compiler happy */ | |
1316 | bs_old_backing = NULL; | |
1317 | bs_new_backing = NULL; | |
1318 | } else { | |
1319 | char backing_name[1024]; | |
1320 | ||
1321 | bs_old_backing = bdrv_new("old_backing"); | |
1322 | bdrv_get_backing_filename(bs, backing_name, sizeof(backing_name)); | |
c2abccec MK |
1323 | ret = bdrv_open(bs_old_backing, backing_name, BDRV_O_FLAGS, |
1324 | old_backing_drv); | |
1325 | if (ret) { | |
15654a6d | 1326 | error_report("Could not open old backing file '%s'", backing_name); |
c2abccec | 1327 | goto out; |
3e85c6fd KW |
1328 | } |
1329 | ||
1330 | bs_new_backing = bdrv_new("new_backing"); | |
cdbae851 | 1331 | ret = bdrv_open(bs_new_backing, out_baseimg, BDRV_O_FLAGS, |
c2abccec MK |
1332 | new_backing_drv); |
1333 | if (ret) { | |
15654a6d | 1334 | error_report("Could not open new backing file '%s'", out_baseimg); |
c2abccec | 1335 | goto out; |
3e85c6fd KW |
1336 | } |
1337 | } | |
1338 | ||
1339 | /* | |
1340 | * Check each unallocated cluster in the COW file. If it is unallocated, | |
1341 | * accesses go to the backing file. We must therefore compare this cluster | |
1342 | * in the old and new backing file, and if they differ we need to copy it | |
1343 | * from the old backing file into the COW file. | |
1344 | * | |
1345 | * If qemu-img crashes during this step, no harm is done. The content of | |
1346 | * the image is the same as the original one at any time. | |
1347 | */ | |
1348 | if (!unsafe) { | |
1349 | uint64_t num_sectors; | |
1350 | uint64_t sector; | |
cc60e327 | 1351 | int n; |
d6771bfa T |
1352 | uint8_t * buf_old; |
1353 | uint8_t * buf_new; | |
6b837bc4 | 1354 | float local_progress; |
d6771bfa | 1355 | |
7267c094 AL |
1356 | buf_old = g_malloc(IO_BUF_SIZE); |
1357 | buf_new = g_malloc(IO_BUF_SIZE); | |
3e85c6fd KW |
1358 | |
1359 | bdrv_get_geometry(bs, &num_sectors); | |
1360 | ||
6b837bc4 | 1361 | local_progress = (float)100 / |
4ee96418 | 1362 | (num_sectors / MIN(num_sectors, IO_BUF_SIZE / 512)); |
3e85c6fd KW |
1363 | for (sector = 0; sector < num_sectors; sector += n) { |
1364 | ||
1365 | /* How many sectors can we handle with the next read? */ | |
1366 | if (sector + (IO_BUF_SIZE / 512) <= num_sectors) { | |
1367 | n = (IO_BUF_SIZE / 512); | |
1368 | } else { | |
1369 | n = num_sectors - sector; | |
1370 | } | |
1371 | ||
1372 | /* If the cluster is allocated, we don't need to take action */ | |
cc60e327 KW |
1373 | ret = bdrv_is_allocated(bs, sector, n, &n); |
1374 | if (ret) { | |
3e85c6fd KW |
1375 | continue; |
1376 | } | |
1377 | ||
1378 | /* Read old and new backing file */ | |
c2abccec MK |
1379 | ret = bdrv_read(bs_old_backing, sector, buf_old, n); |
1380 | if (ret < 0) { | |
15654a6d | 1381 | error_report("error while reading from old backing file"); |
c2abccec | 1382 | goto out; |
3e85c6fd | 1383 | } |
c2abccec MK |
1384 | ret = bdrv_read(bs_new_backing, sector, buf_new, n); |
1385 | if (ret < 0) { | |
15654a6d | 1386 | error_report("error while reading from new backing file"); |
c2abccec | 1387 | goto out; |
3e85c6fd KW |
1388 | } |
1389 | ||
1390 | /* If they differ, we need to write to the COW file */ | |
1391 | uint64_t written = 0; | |
1392 | ||
1393 | while (written < n) { | |
1394 | int pnum; | |
1395 | ||
1396 | if (compare_sectors(buf_old + written * 512, | |
60b1bd4f | 1397 | buf_new + written * 512, n - written, &pnum)) |
3e85c6fd KW |
1398 | { |
1399 | ret = bdrv_write(bs, sector + written, | |
1400 | buf_old + written * 512, pnum); | |
1401 | if (ret < 0) { | |
15654a6d | 1402 | error_report("Error while writing to COW image: %s", |
3e85c6fd | 1403 | strerror(-ret)); |
c2abccec | 1404 | goto out; |
3e85c6fd KW |
1405 | } |
1406 | } | |
1407 | ||
1408 | written += pnum; | |
1409 | } | |
6b837bc4 | 1410 | qemu_progress_print(local_progress, 100); |
3e85c6fd | 1411 | } |
d6771bfa | 1412 | |
7267c094 AL |
1413 | g_free(buf_old); |
1414 | g_free(buf_new); | |
3e85c6fd KW |
1415 | } |
1416 | ||
1417 | /* | |
1418 | * Change the backing file. All clusters that are different from the old | |
1419 | * backing file are overwritten in the COW file now, so the visible content | |
1420 | * doesn't change when we switch the backing file. | |
1421 | */ | |
1422 | ret = bdrv_change_backing_file(bs, out_baseimg, out_basefmt); | |
1423 | if (ret == -ENOSPC) { | |
15654a6d JS |
1424 | error_report("Could not change the backing file to '%s': No " |
1425 | "space left in the file header", out_baseimg); | |
3e85c6fd | 1426 | } else if (ret < 0) { |
15654a6d | 1427 | error_report("Could not change the backing file to '%s': %s", |
3e85c6fd KW |
1428 | out_baseimg, strerror(-ret)); |
1429 | } | |
1430 | ||
6b837bc4 | 1431 | qemu_progress_print(100, 0); |
3e85c6fd KW |
1432 | /* |
1433 | * TODO At this point it is possible to check if any clusters that are | |
1434 | * allocated in the COW file are the same in the backing file. If so, they | |
1435 | * could be dropped from the COW file. Don't do this before switching the | |
1436 | * backing file, in case of a crash this would lead to corruption. | |
1437 | */ | |
c2abccec | 1438 | out: |
6b837bc4 | 1439 | qemu_progress_end(); |
3e85c6fd KW |
1440 | /* Cleanup */ |
1441 | if (!unsafe) { | |
eb863add KW |
1442 | if (bs_old_backing != NULL) { |
1443 | bdrv_delete(bs_old_backing); | |
1444 | } | |
1445 | if (bs_new_backing != NULL) { | |
1446 | bdrv_delete(bs_new_backing); | |
1447 | } | |
3e85c6fd KW |
1448 | } |
1449 | ||
1450 | bdrv_delete(bs); | |
c2abccec MK |
1451 | if (ret) { |
1452 | return 1; | |
1453 | } | |
3e85c6fd KW |
1454 | return 0; |
1455 | } | |
1456 | ||
ae6b0ed6 SH |
1457 | static int img_resize(int argc, char **argv) |
1458 | { | |
1459 | int c, ret, relative; | |
1460 | const char *filename, *fmt, *size; | |
1461 | int64_t n, total_size; | |
2a81998a | 1462 | BlockDriverState *bs = NULL; |
ae6b0ed6 SH |
1463 | QEMUOptionParameter *param; |
1464 | QEMUOptionParameter resize_options[] = { | |
1465 | { | |
1466 | .name = BLOCK_OPT_SIZE, | |
1467 | .type = OPT_SIZE, | |
1468 | .help = "Virtual disk size" | |
1469 | }, | |
1470 | { NULL } | |
1471 | }; | |
1472 | ||
e80fec7f KW |
1473 | /* Remove size from argv manually so that negative numbers are not treated |
1474 | * as options by getopt. */ | |
1475 | if (argc < 3) { | |
1476 | help(); | |
1477 | return 1; | |
1478 | } | |
1479 | ||
1480 | size = argv[--argc]; | |
1481 | ||
1482 | /* Parse getopt arguments */ | |
ae6b0ed6 SH |
1483 | fmt = NULL; |
1484 | for(;;) { | |
1485 | c = getopt(argc, argv, "f:h"); | |
1486 | if (c == -1) { | |
1487 | break; | |
1488 | } | |
1489 | switch(c) { | |
ef87394c | 1490 | case '?': |
ae6b0ed6 SH |
1491 | case 'h': |
1492 | help(); | |
1493 | break; | |
1494 | case 'f': | |
1495 | fmt = optarg; | |
1496 | break; | |
1497 | } | |
1498 | } | |
e80fec7f | 1499 | if (optind >= argc) { |
ae6b0ed6 SH |
1500 | help(); |
1501 | } | |
1502 | filename = argv[optind++]; | |
ae6b0ed6 SH |
1503 | |
1504 | /* Choose grow, shrink, or absolute resize mode */ | |
1505 | switch (size[0]) { | |
1506 | case '+': | |
1507 | relative = 1; | |
1508 | size++; | |
1509 | break; | |
1510 | case '-': | |
1511 | relative = -1; | |
1512 | size++; | |
1513 | break; | |
1514 | default: | |
1515 | relative = 0; | |
1516 | break; | |
1517 | } | |
1518 | ||
1519 | /* Parse size */ | |
1520 | param = parse_option_parameters("", resize_options, NULL); | |
1521 | if (set_option_parameter(param, BLOCK_OPT_SIZE, size)) { | |
1522 | /* Error message already printed when size parsing fails */ | |
2a81998a JS |
1523 | ret = -1; |
1524 | goto out; | |
ae6b0ed6 SH |
1525 | } |
1526 | n = get_option_parameter(param, BLOCK_OPT_SIZE)->value.n; | |
1527 | free_option_parameters(param); | |
1528 | ||
1529 | bs = bdrv_new_open(filename, fmt, BDRV_O_FLAGS | BDRV_O_RDWR); | |
c2abccec | 1530 | if (!bs) { |
2a81998a JS |
1531 | ret = -1; |
1532 | goto out; | |
c2abccec | 1533 | } |
ae6b0ed6 SH |
1534 | |
1535 | if (relative) { | |
1536 | total_size = bdrv_getlength(bs) + n * relative; | |
1537 | } else { | |
1538 | total_size = n; | |
1539 | } | |
1540 | if (total_size <= 0) { | |
15654a6d | 1541 | error_report("New image size must be positive"); |
c2abccec MK |
1542 | ret = -1; |
1543 | goto out; | |
ae6b0ed6 SH |
1544 | } |
1545 | ||
1546 | ret = bdrv_truncate(bs, total_size); | |
1547 | switch (ret) { | |
1548 | case 0: | |
1549 | printf("Image resized.\n"); | |
1550 | break; | |
1551 | case -ENOTSUP: | |
15654a6d | 1552 | error_report("This image format does not support resize"); |
ae6b0ed6 SH |
1553 | break; |
1554 | case -EACCES: | |
15654a6d | 1555 | error_report("Image is read-only"); |
ae6b0ed6 SH |
1556 | break; |
1557 | default: | |
15654a6d | 1558 | error_report("Error resizing image (%d)", -ret); |
ae6b0ed6 SH |
1559 | break; |
1560 | } | |
c2abccec | 1561 | out: |
2a81998a JS |
1562 | if (bs) { |
1563 | bdrv_delete(bs); | |
1564 | } | |
c2abccec MK |
1565 | if (ret) { |
1566 | return 1; | |
1567 | } | |
ae6b0ed6 SH |
1568 | return 0; |
1569 | } | |
1570 | ||
c227f099 | 1571 | static const img_cmd_t img_cmds[] = { |
153859be SB |
1572 | #define DEF(option, callback, arg_string) \ |
1573 | { option, callback }, | |
1574 | #include "qemu-img-cmds.h" | |
1575 | #undef DEF | |
1576 | #undef GEN_DOCS | |
1577 | { NULL, NULL, }, | |
1578 | }; | |
1579 | ||
ea2384d3 FB |
1580 | int main(int argc, char **argv) |
1581 | { | |
c227f099 | 1582 | const img_cmd_t *cmd; |
153859be | 1583 | const char *cmdname; |
ea2384d3 | 1584 | |
53f76e58 KW |
1585 | error_set_progname(argv[0]); |
1586 | ||
ea2384d3 FB |
1587 | bdrv_init(); |
1588 | if (argc < 2) | |
1589 | help(); | |
153859be | 1590 | cmdname = argv[1]; |
8f9b157e | 1591 | argc--; argv++; |
153859be SB |
1592 | |
1593 | /* find the command */ | |
1594 | for(cmd = img_cmds; cmd->name != NULL; cmd++) { | |
1595 | if (!strcmp(cmdname, cmd->name)) { | |
1596 | return cmd->handler(argc, argv); | |
1597 | } | |
ea2384d3 | 1598 | } |
153859be SB |
1599 | |
1600 | /* not found */ | |
1601 | help(); | |
ea2384d3 FB |
1602 | return 0; |
1603 | } |