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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" |
a22f123c KW |
85 | " '-S' indicates the consecutive number of bytes that must contain only zeros\n" |
86 | " for qemu-img to create a sparse image during conversion\n" | |
3f020d70 | 87 | "\n" |
88 | "Parameters to snapshot subcommand:\n" | |
89 | " 'snapshot' is the name of the snapshot to create, apply or delete\n" | |
90 | " '-a' applies a snapshot (revert disk to saved state)\n" | |
91 | " '-c' creates a snapshot\n" | |
92 | " '-d' deletes a snapshot\n" | |
e00291c0 PB |
93 | " '-l' lists all snapshots in the given image\n"; |
94 | ||
95 | printf("%s\nSupported formats:", help_msg); | |
ea2384d3 FB |
96 | bdrv_iterate_format(format_print, NULL); |
97 | printf("\n"); | |
98 | exit(1); | |
99 | } | |
100 | ||
ea2384d3 FB |
101 | #if defined(WIN32) |
102 | /* XXX: put correct support for win32 */ | |
103 | static int read_password(char *buf, int buf_size) | |
104 | { | |
105 | int c, i; | |
106 | printf("Password: "); | |
107 | fflush(stdout); | |
108 | i = 0; | |
109 | for(;;) { | |
110 | c = getchar(); | |
111 | if (c == '\n') | |
112 | break; | |
113 | if (i < (buf_size - 1)) | |
114 | buf[i++] = c; | |
115 | } | |
116 | buf[i] = '\0'; | |
117 | return 0; | |
118 | } | |
119 | ||
120 | #else | |
121 | ||
122 | #include <termios.h> | |
123 | ||
124 | static struct termios oldtty; | |
125 | ||
126 | static void term_exit(void) | |
127 | { | |
128 | tcsetattr (0, TCSANOW, &oldtty); | |
129 | } | |
130 | ||
131 | static void term_init(void) | |
132 | { | |
133 | struct termios tty; | |
134 | ||
135 | tcgetattr (0, &tty); | |
136 | oldtty = tty; | |
137 | ||
138 | tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP | |
139 | |INLCR|IGNCR|ICRNL|IXON); | |
140 | tty.c_oflag |= OPOST; | |
141 | tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN); | |
142 | tty.c_cflag &= ~(CSIZE|PARENB); | |
143 | tty.c_cflag |= CS8; | |
144 | tty.c_cc[VMIN] = 1; | |
145 | tty.c_cc[VTIME] = 0; | |
3b46e624 | 146 | |
ea2384d3 FB |
147 | tcsetattr (0, TCSANOW, &tty); |
148 | ||
149 | atexit(term_exit); | |
150 | } | |
151 | ||
3f379ab1 | 152 | static int read_password(char *buf, int buf_size) |
ea2384d3 FB |
153 | { |
154 | uint8_t ch; | |
155 | int i, ret; | |
156 | ||
157 | printf("password: "); | |
158 | fflush(stdout); | |
159 | term_init(); | |
160 | i = 0; | |
161 | for(;;) { | |
162 | ret = read(0, &ch, 1); | |
163 | if (ret == -1) { | |
164 | if (errno == EAGAIN || errno == EINTR) { | |
165 | continue; | |
166 | } else { | |
167 | ret = -1; | |
168 | break; | |
169 | } | |
170 | } else if (ret == 0) { | |
171 | ret = -1; | |
172 | break; | |
173 | } else { | |
174 | if (ch == '\r') { | |
175 | ret = 0; | |
176 | break; | |
177 | } | |
178 | if (i < (buf_size - 1)) | |
179 | buf[i++] = ch; | |
180 | } | |
181 | } | |
182 | term_exit(); | |
183 | buf[i] = '\0'; | |
184 | printf("\n"); | |
185 | return ret; | |
186 | } | |
187 | #endif | |
188 | ||
4ac8aacd JS |
189 | static int print_block_option_help(const char *filename, const char *fmt) |
190 | { | |
191 | BlockDriver *drv, *proto_drv; | |
192 | QEMUOptionParameter *create_options = NULL; | |
193 | ||
194 | /* Find driver and parse its options */ | |
195 | drv = bdrv_find_format(fmt); | |
196 | if (!drv) { | |
15654a6d | 197 | error_report("Unknown file format '%s'", fmt); |
4ac8aacd JS |
198 | return 1; |
199 | } | |
200 | ||
201 | proto_drv = bdrv_find_protocol(filename); | |
202 | if (!proto_drv) { | |
15654a6d | 203 | error_report("Unknown protocol '%s'", filename); |
4ac8aacd JS |
204 | return 1; |
205 | } | |
206 | ||
207 | create_options = append_option_parameters(create_options, | |
208 | drv->create_options); | |
209 | create_options = append_option_parameters(create_options, | |
210 | proto_drv->create_options); | |
211 | print_option_help(create_options); | |
212 | free_option_parameters(create_options); | |
213 | return 0; | |
214 | } | |
215 | ||
75c23805 | 216 | static BlockDriverState *bdrv_new_open(const char *filename, |
9bc378c1 | 217 | const char *fmt, |
f163d073 | 218 | int flags) |
75c23805 FB |
219 | { |
220 | BlockDriverState *bs; | |
221 | BlockDriver *drv; | |
222 | char password[256]; | |
b9eaf9ec | 223 | int ret; |
75c23805 | 224 | |
b9eaf9ec | 225 | bs = bdrv_new("image"); |
ad717139 | 226 | |
75c23805 FB |
227 | if (fmt) { |
228 | drv = bdrv_find_format(fmt); | |
c2abccec | 229 | if (!drv) { |
15654a6d | 230 | error_report("Unknown file format '%s'", fmt); |
c2abccec MK |
231 | goto fail; |
232 | } | |
75c23805 FB |
233 | } else { |
234 | drv = NULL; | |
235 | } | |
b9eaf9ec KW |
236 | |
237 | ret = bdrv_open(bs, filename, flags, drv); | |
238 | if (ret < 0) { | |
239 | error_report("Could not open '%s': %s", filename, strerror(-ret)); | |
c2abccec | 240 | goto fail; |
75c23805 | 241 | } |
b9eaf9ec | 242 | |
75c23805 FB |
243 | if (bdrv_is_encrypted(bs)) { |
244 | printf("Disk image '%s' is encrypted.\n", filename); | |
c2abccec | 245 | if (read_password(password, sizeof(password)) < 0) { |
15654a6d | 246 | error_report("No password given"); |
c2abccec MK |
247 | goto fail; |
248 | } | |
249 | if (bdrv_set_key(bs, password) < 0) { | |
15654a6d | 250 | error_report("invalid password"); |
c2abccec MK |
251 | goto fail; |
252 | } | |
75c23805 FB |
253 | } |
254 | return bs; | |
c2abccec MK |
255 | fail: |
256 | if (bs) { | |
257 | bdrv_delete(bs); | |
258 | } | |
259 | return NULL; | |
75c23805 FB |
260 | } |
261 | ||
c2abccec | 262 | static int add_old_style_options(const char *fmt, QEMUOptionParameter *list, |
eec77d9e JS |
263 | const char *base_filename, |
264 | const char *base_fmt) | |
efa84d43 | 265 | { |
efa84d43 KW |
266 | if (base_filename) { |
267 | if (set_option_parameter(list, BLOCK_OPT_BACKING_FILE, base_filename)) { | |
15654a6d JS |
268 | error_report("Backing file not supported for file format '%s'", |
269 | fmt); | |
c2abccec | 270 | return -1; |
efa84d43 KW |
271 | } |
272 | } | |
273 | if (base_fmt) { | |
274 | if (set_option_parameter(list, BLOCK_OPT_BACKING_FMT, base_fmt)) { | |
15654a6d JS |
275 | error_report("Backing file format not supported for file " |
276 | "format '%s'", fmt); | |
c2abccec | 277 | return -1; |
efa84d43 KW |
278 | } |
279 | } | |
c2abccec | 280 | return 0; |
efa84d43 KW |
281 | } |
282 | ||
ea2384d3 FB |
283 | static int img_create(int argc, char **argv) |
284 | { | |
eec77d9e | 285 | int c, ret = 0; |
1da7cfbd | 286 | uint64_t img_size = -1; |
ea2384d3 | 287 | const char *fmt = "raw"; |
9230eaf6 | 288 | const char *base_fmt = NULL; |
ea2384d3 FB |
289 | const char *filename; |
290 | const char *base_filename = NULL; | |
9ea2ea71 | 291 | char *options = NULL; |
3b46e624 | 292 | |
ea2384d3 | 293 | for(;;) { |
9ea2ea71 | 294 | c = getopt(argc, argv, "F:b:f:he6o:"); |
b8fb60da | 295 | if (c == -1) { |
ea2384d3 | 296 | break; |
b8fb60da | 297 | } |
ea2384d3 | 298 | switch(c) { |
ef87394c | 299 | case '?': |
ea2384d3 FB |
300 | case 'h': |
301 | help(); | |
302 | break; | |
9230eaf6 AL |
303 | case 'F': |
304 | base_fmt = optarg; | |
305 | break; | |
ea2384d3 FB |
306 | case 'b': |
307 | base_filename = optarg; | |
308 | break; | |
309 | case 'f': | |
310 | fmt = optarg; | |
311 | break; | |
312 | case 'e': | |
9d42e15d | 313 | error_report("option -e is deprecated, please use \'-o " |
eec77d9e JS |
314 | "encryption\' instead!"); |
315 | return 1; | |
d8871c5a | 316 | case '6': |
9d42e15d | 317 | error_report("option -6 is deprecated, please use \'-o " |
eec77d9e JS |
318 | "compat6\' instead!"); |
319 | return 1; | |
9ea2ea71 KW |
320 | case 'o': |
321 | options = optarg; | |
322 | break; | |
ea2384d3 FB |
323 | } |
324 | } | |
9230eaf6 | 325 | |
b50cbabc | 326 | /* Get the filename */ |
b8fb60da | 327 | if (optind >= argc) { |
b50cbabc | 328 | help(); |
b8fb60da | 329 | } |
b50cbabc MK |
330 | filename = argv[optind++]; |
331 | ||
1da7cfbd JS |
332 | /* Get image size, if specified */ |
333 | if (optind < argc) { | |
70b4f4bb | 334 | int64_t sval; |
1da7cfbd JS |
335 | sval = strtosz_suffix(argv[optind++], NULL, STRTOSZ_DEFSUFFIX_B); |
336 | if (sval < 0) { | |
15654a6d | 337 | error_report("Invalid image size specified! You may use k, M, G or " |
1da7cfbd | 338 | "T suffixes for "); |
15654a6d | 339 | error_report("kilobytes, megabytes, gigabytes and terabytes."); |
1da7cfbd JS |
340 | ret = -1; |
341 | goto out; | |
342 | } | |
343 | img_size = (uint64_t)sval; | |
344 | } | |
345 | ||
4ac8aacd JS |
346 | if (options && !strcmp(options, "?")) { |
347 | ret = print_block_option_help(filename, fmt); | |
348 | goto out; | |
349 | } | |
350 | ||
f88e1a42 JS |
351 | ret = bdrv_img_create(filename, fmt, base_filename, base_fmt, |
352 | options, img_size, BDRV_O_FLAGS); | |
c2abccec MK |
353 | out: |
354 | if (ret) { | |
355 | return 1; | |
356 | } | |
ea2384d3 FB |
357 | return 0; |
358 | } | |
359 | ||
e076f338 KW |
360 | /* |
361 | * Checks an image for consistency. Exit codes: | |
362 | * | |
363 | * 0 - Check completed, image is good | |
364 | * 1 - Check not completed because of internal errors | |
365 | * 2 - Check completed, image is corrupted | |
366 | * 3 - Check completed, image has leaked clusters, but is good otherwise | |
367 | */ | |
1585969c AL |
368 | static int img_check(int argc, char **argv) |
369 | { | |
370 | int c, ret; | |
371 | const char *filename, *fmt; | |
1585969c | 372 | BlockDriverState *bs; |
e076f338 | 373 | BdrvCheckResult result; |
1585969c AL |
374 | |
375 | fmt = NULL; | |
376 | for(;;) { | |
377 | c = getopt(argc, argv, "f:h"); | |
b8fb60da | 378 | if (c == -1) { |
1585969c | 379 | break; |
b8fb60da | 380 | } |
1585969c | 381 | switch(c) { |
ef87394c | 382 | case '?': |
1585969c AL |
383 | case 'h': |
384 | help(); | |
385 | break; | |
386 | case 'f': | |
387 | fmt = optarg; | |
388 | break; | |
389 | } | |
390 | } | |
b8fb60da | 391 | if (optind >= argc) { |
1585969c | 392 | help(); |
b8fb60da | 393 | } |
1585969c AL |
394 | filename = argv[optind++]; |
395 | ||
adfe078e | 396 | bs = bdrv_new_open(filename, fmt, BDRV_O_FLAGS); |
c2abccec MK |
397 | if (!bs) { |
398 | return 1; | |
399 | } | |
e076f338 KW |
400 | ret = bdrv_check(bs, &result); |
401 | ||
402 | if (ret == -ENOTSUP) { | |
15654a6d | 403 | error_report("This image format does not support checks"); |
e076f338 KW |
404 | bdrv_delete(bs); |
405 | return 1; | |
406 | } | |
407 | ||
408 | if (!(result.corruptions || result.leaks || result.check_errors)) { | |
409 | printf("No errors were found on the image.\n"); | |
410 | } else { | |
411 | if (result.corruptions) { | |
412 | printf("\n%d errors were found on the image.\n" | |
413 | "Data may be corrupted, or further writes to the image " | |
414 | "may corrupt it.\n", | |
415 | result.corruptions); | |
416 | } | |
417 | ||
418 | if (result.leaks) { | |
419 | printf("\n%d leaked clusters were found on the image.\n" | |
420 | "This means waste of disk space, but no harm to data.\n", | |
421 | result.leaks); | |
422 | } | |
423 | ||
424 | if (result.check_errors) { | |
425 | printf("\n%d internal errors have occurred during the check.\n", | |
426 | result.check_errors); | |
1585969c | 427 | } |
1585969c AL |
428 | } |
429 | ||
430 | bdrv_delete(bs); | |
e076f338 KW |
431 | |
432 | if (ret < 0 || result.check_errors) { | |
433 | printf("\nAn error has occurred during the check: %s\n" | |
434 | "The check is not complete and may have missed error.\n", | |
435 | strerror(-ret)); | |
c2abccec MK |
436 | return 1; |
437 | } | |
e076f338 KW |
438 | |
439 | if (result.corruptions) { | |
440 | return 2; | |
441 | } else if (result.leaks) { | |
442 | return 3; | |
443 | } else { | |
444 | return 0; | |
445 | } | |
1585969c AL |
446 | } |
447 | ||
ea2384d3 FB |
448 | static int img_commit(int argc, char **argv) |
449 | { | |
661a0f71 FS |
450 | int c, ret, flags; |
451 | const char *filename, *fmt, *cache; | |
ea2384d3 FB |
452 | BlockDriverState *bs; |
453 | ||
454 | fmt = NULL; | |
661a0f71 | 455 | cache = BDRV_DEFAULT_CACHE; |
ea2384d3 | 456 | for(;;) { |
661a0f71 | 457 | c = getopt(argc, argv, "f:ht:"); |
b8fb60da | 458 | if (c == -1) { |
ea2384d3 | 459 | break; |
b8fb60da | 460 | } |
ea2384d3 | 461 | switch(c) { |
ef87394c | 462 | case '?': |
ea2384d3 FB |
463 | case 'h': |
464 | help(); | |
465 | break; | |
466 | case 'f': | |
467 | fmt = optarg; | |
468 | break; | |
661a0f71 FS |
469 | case 't': |
470 | cache = optarg; | |
471 | break; | |
ea2384d3 FB |
472 | } |
473 | } | |
b8fb60da | 474 | if (optind >= argc) { |
ea2384d3 | 475 | help(); |
b8fb60da | 476 | } |
ea2384d3 FB |
477 | filename = argv[optind++]; |
478 | ||
661a0f71 | 479 | flags = BDRV_O_RDWR; |
c3993cdc | 480 | ret = bdrv_parse_cache_flags(cache, &flags); |
661a0f71 FS |
481 | if (ret < 0) { |
482 | error_report("Invalid cache option: %s", cache); | |
483 | return -1; | |
484 | } | |
485 | ||
486 | bs = bdrv_new_open(filename, fmt, flags); | |
c2abccec MK |
487 | if (!bs) { |
488 | return 1; | |
489 | } | |
ea2384d3 FB |
490 | ret = bdrv_commit(bs); |
491 | switch(ret) { | |
492 | case 0: | |
493 | printf("Image committed.\n"); | |
494 | break; | |
495 | case -ENOENT: | |
15654a6d | 496 | error_report("No disk inserted"); |
ea2384d3 FB |
497 | break; |
498 | case -EACCES: | |
15654a6d | 499 | error_report("Image is read-only"); |
ea2384d3 FB |
500 | break; |
501 | case -ENOTSUP: | |
15654a6d | 502 | error_report("Image is already committed"); |
ea2384d3 FB |
503 | break; |
504 | default: | |
15654a6d | 505 | error_report("Error while committing image"); |
ea2384d3 FB |
506 | break; |
507 | } | |
508 | ||
509 | bdrv_delete(bs); | |
c2abccec MK |
510 | if (ret) { |
511 | return 1; | |
512 | } | |
ea2384d3 FB |
513 | return 0; |
514 | } | |
515 | ||
f6a00aa1 DK |
516 | /* |
517 | * Checks whether the sector is not a zero sector. | |
518 | * | |
519 | * Attention! The len must be a multiple of 4 * sizeof(long) due to | |
520 | * restriction of optimizations in this function. | |
521 | */ | |
ea2384d3 FB |
522 | static int is_not_zero(const uint8_t *sector, int len) |
523 | { | |
f6a00aa1 DK |
524 | /* |
525 | * Use long as the biggest available internal data type that fits into the | |
526 | * CPU register and unroll the loop to smooth out the effect of memory | |
527 | * latency. | |
528 | */ | |
529 | ||
ea2384d3 | 530 | int i; |
f6a00aa1 DK |
531 | long d0, d1, d2, d3; |
532 | const long * const data = (const long *) sector; | |
533 | ||
534 | len /= sizeof(long); | |
535 | ||
536 | for(i = 0; i < len; i += 4) { | |
537 | d0 = data[i + 0]; | |
538 | d1 = data[i + 1]; | |
539 | d2 = data[i + 2]; | |
540 | d3 = data[i + 3]; | |
541 | ||
542 | if (d0 || d1 || d2 || d3) { | |
ea2384d3 | 543 | return 1; |
f6a00aa1 | 544 | } |
ea2384d3 | 545 | } |
f6a00aa1 | 546 | |
ea2384d3 FB |
547 | return 0; |
548 | } | |
549 | ||
f58c7b35 TS |
550 | /* |
551 | * Returns true iff the first sector pointed to by 'buf' contains at least | |
552 | * a non-NUL byte. | |
553 | * | |
554 | * 'pnum' is set to the number of sectors (including and immediately following | |
555 | * the first one) that are known to be in the same allocated/unallocated state. | |
556 | */ | |
ea2384d3 FB |
557 | static int is_allocated_sectors(const uint8_t *buf, int n, int *pnum) |
558 | { | |
559 | int v, i; | |
560 | ||
561 | if (n <= 0) { | |
562 | *pnum = 0; | |
563 | return 0; | |
564 | } | |
565 | v = is_not_zero(buf, 512); | |
566 | for(i = 1; i < n; i++) { | |
567 | buf += 512; | |
568 | if (v != is_not_zero(buf, 512)) | |
569 | break; | |
570 | } | |
571 | *pnum = i; | |
572 | return v; | |
573 | } | |
574 | ||
a22f123c KW |
575 | /* |
576 | * Like is_allocated_sectors, but if the buffer starts with a used sector, | |
577 | * up to 'min' consecutive sectors containing zeros are ignored. This avoids | |
578 | * breaking up write requests for only small sparse areas. | |
579 | */ | |
580 | static int is_allocated_sectors_min(const uint8_t *buf, int n, int *pnum, | |
581 | int min) | |
582 | { | |
583 | int ret; | |
584 | int num_checked, num_used; | |
585 | ||
586 | if (n < min) { | |
587 | min = n; | |
588 | } | |
589 | ||
590 | ret = is_allocated_sectors(buf, n, pnum); | |
591 | if (!ret) { | |
592 | return ret; | |
593 | } | |
594 | ||
595 | num_used = *pnum; | |
596 | buf += BDRV_SECTOR_SIZE * *pnum; | |
597 | n -= *pnum; | |
598 | num_checked = num_used; | |
599 | ||
600 | while (n > 0) { | |
601 | ret = is_allocated_sectors(buf, n, pnum); | |
602 | ||
603 | buf += BDRV_SECTOR_SIZE * *pnum; | |
604 | n -= *pnum; | |
605 | num_checked += *pnum; | |
606 | if (ret) { | |
607 | num_used = num_checked; | |
608 | } else if (*pnum >= min) { | |
609 | break; | |
610 | } | |
611 | } | |
612 | ||
613 | *pnum = num_used; | |
614 | return 1; | |
615 | } | |
616 | ||
3e85c6fd KW |
617 | /* |
618 | * Compares two buffers sector by sector. Returns 0 if the first sector of both | |
619 | * buffers matches, non-zero otherwise. | |
620 | * | |
621 | * pnum is set to the number of sectors (including and immediately following | |
622 | * the first one) that are known to have the same comparison result | |
623 | */ | |
624 | static int compare_sectors(const uint8_t *buf1, const uint8_t *buf2, int n, | |
625 | int *pnum) | |
626 | { | |
627 | int res, i; | |
628 | ||
629 | if (n <= 0) { | |
630 | *pnum = 0; | |
631 | return 0; | |
632 | } | |
633 | ||
634 | res = !!memcmp(buf1, buf2, 512); | |
635 | for(i = 1; i < n; i++) { | |
636 | buf1 += 512; | |
637 | buf2 += 512; | |
638 | ||
639 | if (!!memcmp(buf1, buf2, 512) != res) { | |
640 | break; | |
641 | } | |
642 | } | |
643 | ||
644 | *pnum = i; | |
645 | return res; | |
646 | } | |
647 | ||
80ee15a6 | 648 | #define IO_BUF_SIZE (2 * 1024 * 1024) |
ea2384d3 FB |
649 | |
650 | static int img_convert(int argc, char **argv) | |
651 | { | |
eec77d9e | 652 | int c, ret = 0, n, n1, bs_n, bs_i, compress, cluster_size, cluster_sectors; |
661a0f71 FS |
653 | int progress = 0, flags; |
654 | const char *fmt, *out_fmt, *cache, *out_baseimg, *out_filename; | |
b50cbabc | 655 | BlockDriver *drv, *proto_drv; |
c2abccec | 656 | BlockDriverState **bs = NULL, *out_bs = NULL; |
96b8f136 TS |
657 | int64_t total_sectors, nb_sectors, sector_num, bs_offset; |
658 | uint64_t bs_sectors; | |
c2abccec | 659 | uint8_t * buf = NULL; |
ea2384d3 | 660 | const uint8_t *buf1; |
faea38e7 | 661 | BlockDriverInfo bdi; |
b50cbabc | 662 | QEMUOptionParameter *param = NULL, *create_options = NULL; |
a18953fb | 663 | QEMUOptionParameter *out_baseimg_param; |
efa84d43 | 664 | char *options = NULL; |
51ef6727 | 665 | const char *snapshot_name = NULL; |
6b837bc4 | 666 | float local_progress; |
a22f123c | 667 | int min_sparse = 8; /* Need at least 4k of zeros for sparse detection */ |
ea2384d3 FB |
668 | |
669 | fmt = NULL; | |
670 | out_fmt = "raw"; | |
661a0f71 | 671 | cache = "unsafe"; |
f58c7b35 | 672 | out_baseimg = NULL; |
eec77d9e | 673 | compress = 0; |
ea2384d3 | 674 | for(;;) { |
a22f123c | 675 | c = getopt(argc, argv, "f:O:B:s:hce6o:pS:t:"); |
b8fb60da | 676 | if (c == -1) { |
ea2384d3 | 677 | break; |
b8fb60da | 678 | } |
ea2384d3 | 679 | switch(c) { |
ef87394c | 680 | case '?': |
ea2384d3 FB |
681 | case 'h': |
682 | help(); | |
683 | break; | |
684 | case 'f': | |
685 | fmt = optarg; | |
686 | break; | |
687 | case 'O': | |
688 | out_fmt = optarg; | |
689 | break; | |
f58c7b35 TS |
690 | case 'B': |
691 | out_baseimg = optarg; | |
692 | break; | |
ea2384d3 | 693 | case 'c': |
eec77d9e | 694 | compress = 1; |
ea2384d3 FB |
695 | break; |
696 | case 'e': | |
9d42e15d | 697 | error_report("option -e is deprecated, please use \'-o " |
eec77d9e JS |
698 | "encryption\' instead!"); |
699 | return 1; | |
ec36ba14 | 700 | case '6': |
9d42e15d | 701 | error_report("option -6 is deprecated, please use \'-o " |
eec77d9e JS |
702 | "compat6\' instead!"); |
703 | return 1; | |
efa84d43 KW |
704 | case 'o': |
705 | options = optarg; | |
706 | break; | |
51ef6727 | 707 | case 's': |
708 | snapshot_name = optarg; | |
709 | break; | |
a22f123c KW |
710 | case 'S': |
711 | { | |
712 | int64_t sval; | |
713 | sval = strtosz_suffix(optarg, NULL, STRTOSZ_DEFSUFFIX_B); | |
714 | if (sval < 0) { | |
715 | error_report("Invalid minimum zero buffer size for sparse output specified"); | |
716 | return 1; | |
717 | } | |
718 | ||
719 | min_sparse = sval / BDRV_SECTOR_SIZE; | |
720 | break; | |
721 | } | |
6b837bc4 JS |
722 | case 'p': |
723 | progress = 1; | |
724 | break; | |
661a0f71 FS |
725 | case 't': |
726 | cache = optarg; | |
727 | break; | |
ea2384d3 FB |
728 | } |
729 | } | |
3b46e624 | 730 | |
926c2d23 | 731 | bs_n = argc - optind - 1; |
b8fb60da JS |
732 | if (bs_n < 1) { |
733 | help(); | |
734 | } | |
926c2d23 AZ |
735 | |
736 | out_filename = argv[argc - 1]; | |
f58c7b35 | 737 | |
4ac8aacd JS |
738 | if (options && !strcmp(options, "?")) { |
739 | ret = print_block_option_help(out_filename, out_fmt); | |
740 | goto out; | |
741 | } | |
742 | ||
c2abccec | 743 | if (bs_n > 1 && out_baseimg) { |
15654a6d JS |
744 | error_report("-B makes no sense when concatenating multiple input " |
745 | "images"); | |
31ca34b8 JS |
746 | ret = -1; |
747 | goto out; | |
c2abccec | 748 | } |
926c2d23 | 749 | |
6b837bc4 JS |
750 | qemu_progress_init(progress, 2.0); |
751 | qemu_progress_print(0, 100); | |
752 | ||
7267c094 | 753 | bs = g_malloc0(bs_n * sizeof(BlockDriverState *)); |
926c2d23 AZ |
754 | |
755 | total_sectors = 0; | |
756 | for (bs_i = 0; bs_i < bs_n; bs_i++) { | |
adfe078e | 757 | bs[bs_i] = bdrv_new_open(argv[optind + bs_i], fmt, BDRV_O_FLAGS); |
c2abccec | 758 | if (!bs[bs_i]) { |
15654a6d | 759 | error_report("Could not open '%s'", argv[optind + bs_i]); |
c2abccec MK |
760 | ret = -1; |
761 | goto out; | |
762 | } | |
926c2d23 AZ |
763 | bdrv_get_geometry(bs[bs_i], &bs_sectors); |
764 | total_sectors += bs_sectors; | |
765 | } | |
ea2384d3 | 766 | |
51ef6727 | 767 | if (snapshot_name != NULL) { |
768 | if (bs_n > 1) { | |
6daf194d | 769 | error_report("No support for concatenating multiple snapshot"); |
51ef6727 | 770 | ret = -1; |
771 | goto out; | |
772 | } | |
773 | if (bdrv_snapshot_load_tmp(bs[0], snapshot_name) < 0) { | |
6daf194d | 774 | error_report("Failed to load snapshot"); |
51ef6727 | 775 | ret = -1; |
776 | goto out; | |
777 | } | |
778 | } | |
779 | ||
efa84d43 | 780 | /* Find driver and parse its options */ |
ea2384d3 | 781 | drv = bdrv_find_format(out_fmt); |
c2abccec | 782 | if (!drv) { |
15654a6d | 783 | error_report("Unknown file format '%s'", out_fmt); |
c2abccec MK |
784 | ret = -1; |
785 | goto out; | |
786 | } | |
efa84d43 | 787 | |
b50cbabc | 788 | proto_drv = bdrv_find_protocol(out_filename); |
c2abccec | 789 | if (!proto_drv) { |
15654a6d | 790 | error_report("Unknown protocol '%s'", out_filename); |
c2abccec MK |
791 | ret = -1; |
792 | goto out; | |
793 | } | |
b50cbabc MK |
794 | |
795 | create_options = append_option_parameters(create_options, | |
796 | drv->create_options); | |
797 | create_options = append_option_parameters(create_options, | |
798 | proto_drv->create_options); | |
db08adf5 | 799 | |
efa84d43 | 800 | if (options) { |
b50cbabc | 801 | param = parse_option_parameters(options, create_options, param); |
efa84d43 | 802 | if (param == NULL) { |
15654a6d | 803 | error_report("Invalid options for file format '%s'.", out_fmt); |
c2abccec MK |
804 | ret = -1; |
805 | goto out; | |
efa84d43 KW |
806 | } |
807 | } else { | |
b50cbabc | 808 | param = parse_option_parameters("", create_options, param); |
efa84d43 KW |
809 | } |
810 | ||
811 | set_option_parameter_int(param, BLOCK_OPT_SIZE, total_sectors * 512); | |
eec77d9e | 812 | ret = add_old_style_options(out_fmt, param, out_baseimg, NULL); |
c2abccec MK |
813 | if (ret < 0) { |
814 | goto out; | |
815 | } | |
efa84d43 | 816 | |
a18953fb KW |
817 | /* Get backing file name if -o backing_file was used */ |
818 | out_baseimg_param = get_option_parameter(param, BLOCK_OPT_BACKING_FILE); | |
819 | if (out_baseimg_param) { | |
820 | out_baseimg = out_baseimg_param->value.s; | |
821 | } | |
822 | ||
efa84d43 | 823 | /* Check if compression is supported */ |
eec77d9e | 824 | if (compress) { |
efa84d43 KW |
825 | QEMUOptionParameter *encryption = |
826 | get_option_parameter(param, BLOCK_OPT_ENCRYPT); | |
41521fa4 KW |
827 | QEMUOptionParameter *preallocation = |
828 | get_option_parameter(param, BLOCK_OPT_PREALLOC); | |
efa84d43 KW |
829 | |
830 | if (!drv->bdrv_write_compressed) { | |
15654a6d | 831 | error_report("Compression not supported for this file format"); |
c2abccec MK |
832 | ret = -1; |
833 | goto out; | |
efa84d43 KW |
834 | } |
835 | ||
836 | if (encryption && encryption->value.n) { | |
15654a6d JS |
837 | error_report("Compression and encryption not supported at " |
838 | "the same time"); | |
c2abccec MK |
839 | ret = -1; |
840 | goto out; | |
efa84d43 | 841 | } |
41521fa4 KW |
842 | |
843 | if (preallocation && preallocation->value.s | |
844 | && strcmp(preallocation->value.s, "off")) | |
845 | { | |
846 | error_report("Compression and preallocation not supported at " | |
847 | "the same time"); | |
848 | ret = -1; | |
849 | goto out; | |
850 | } | |
efa84d43 KW |
851 | } |
852 | ||
853 | /* Create the new image */ | |
854 | ret = bdrv_create(drv, out_filename, param); | |
ea2384d3 FB |
855 | if (ret < 0) { |
856 | if (ret == -ENOTSUP) { | |
15654a6d JS |
857 | error_report("Formatting not supported for file format '%s'", |
858 | out_fmt); | |
6e9ea0c0 | 859 | } else if (ret == -EFBIG) { |
15654a6d JS |
860 | error_report("The image size is too large for file format '%s'", |
861 | out_fmt); | |
ea2384d3 | 862 | } else { |
15654a6d JS |
863 | error_report("%s: error while converting %s: %s", |
864 | out_filename, out_fmt, strerror(-ret)); | |
ea2384d3 | 865 | } |
c2abccec | 866 | goto out; |
ea2384d3 | 867 | } |
3b46e624 | 868 | |
661a0f71 | 869 | flags = BDRV_O_RDWR; |
c3993cdc | 870 | ret = bdrv_parse_cache_flags(cache, &flags); |
661a0f71 FS |
871 | if (ret < 0) { |
872 | error_report("Invalid cache option: %s", cache); | |
873 | return -1; | |
874 | } | |
875 | ||
876 | out_bs = bdrv_new_open(out_filename, out_fmt, flags); | |
c2abccec MK |
877 | if (!out_bs) { |
878 | ret = -1; | |
879 | goto out; | |
880 | } | |
ea2384d3 | 881 | |
926c2d23 AZ |
882 | bs_i = 0; |
883 | bs_offset = 0; | |
884 | bdrv_get_geometry(bs[0], &bs_sectors); | |
bb1c0597 | 885 | buf = qemu_blockalign(out_bs, IO_BUF_SIZE); |
926c2d23 | 886 | |
eec77d9e | 887 | if (compress) { |
c2abccec MK |
888 | ret = bdrv_get_info(out_bs, &bdi); |
889 | if (ret < 0) { | |
15654a6d | 890 | error_report("could not get block driver info"); |
c2abccec MK |
891 | goto out; |
892 | } | |
faea38e7 | 893 | cluster_size = bdi.cluster_size; |
c2abccec | 894 | if (cluster_size <= 0 || cluster_size > IO_BUF_SIZE) { |
15654a6d | 895 | error_report("invalid cluster size"); |
c2abccec MK |
896 | ret = -1; |
897 | goto out; | |
898 | } | |
ea2384d3 FB |
899 | cluster_sectors = cluster_size >> 9; |
900 | sector_num = 0; | |
6b837bc4 JS |
901 | |
902 | nb_sectors = total_sectors; | |
903 | local_progress = (float)100 / | |
4ee96418 | 904 | (nb_sectors / MIN(nb_sectors, cluster_sectors)); |
6b837bc4 | 905 | |
ea2384d3 | 906 | for(;;) { |
926c2d23 AZ |
907 | int64_t bs_num; |
908 | int remainder; | |
909 | uint8_t *buf2; | |
910 | ||
ea2384d3 FB |
911 | nb_sectors = total_sectors - sector_num; |
912 | if (nb_sectors <= 0) | |
913 | break; | |
914 | if (nb_sectors >= cluster_sectors) | |
915 | n = cluster_sectors; | |
916 | else | |
917 | n = nb_sectors; | |
926c2d23 AZ |
918 | |
919 | bs_num = sector_num - bs_offset; | |
920 | assert (bs_num >= 0); | |
921 | remainder = n; | |
922 | buf2 = buf; | |
923 | while (remainder > 0) { | |
924 | int nlow; | |
925 | while (bs_num == bs_sectors) { | |
926 | bs_i++; | |
927 | assert (bs_i < bs_n); | |
928 | bs_offset += bs_sectors; | |
929 | bdrv_get_geometry(bs[bs_i], &bs_sectors); | |
930 | bs_num = 0; | |
0bfcd599 BS |
931 | /* printf("changing part: sector_num=%" PRId64 ", " |
932 | "bs_i=%d, bs_offset=%" PRId64 ", bs_sectors=%" PRId64 | |
933 | "\n", sector_num, bs_i, bs_offset, bs_sectors); */ | |
926c2d23 AZ |
934 | } |
935 | assert (bs_num < bs_sectors); | |
936 | ||
937 | nlow = (remainder > bs_sectors - bs_num) ? bs_sectors - bs_num : remainder; | |
938 | ||
c2abccec MK |
939 | ret = bdrv_read(bs[bs_i], bs_num, buf2, nlow); |
940 | if (ret < 0) { | |
3fba9d81 SH |
941 | error_report("error while reading sector %" PRId64 ": %s", |
942 | bs_num, strerror(-ret)); | |
c2abccec MK |
943 | goto out; |
944 | } | |
926c2d23 AZ |
945 | |
946 | buf2 += nlow * 512; | |
947 | bs_num += nlow; | |
948 | ||
949 | remainder -= nlow; | |
950 | } | |
951 | assert (remainder == 0); | |
952 | ||
b8fb60da | 953 | if (n < cluster_sectors) { |
ea2384d3 | 954 | memset(buf + n * 512, 0, cluster_size - n * 512); |
b8fb60da | 955 | } |
ea2384d3 | 956 | if (is_not_zero(buf, cluster_size)) { |
c2abccec MK |
957 | ret = bdrv_write_compressed(out_bs, sector_num, buf, |
958 | cluster_sectors); | |
959 | if (ret != 0) { | |
3fba9d81 SH |
960 | error_report("error while compressing sector %" PRId64 |
961 | ": %s", sector_num, strerror(-ret)); | |
c2abccec MK |
962 | goto out; |
963 | } | |
ea2384d3 FB |
964 | } |
965 | sector_num += n; | |
6b837bc4 | 966 | qemu_progress_print(local_progress, 100); |
ea2384d3 | 967 | } |
faea38e7 FB |
968 | /* signal EOF to align */ |
969 | bdrv_write_compressed(out_bs, 0, NULL, 0); | |
ea2384d3 | 970 | } else { |
f2feebbd KW |
971 | int has_zero_init = bdrv_has_zero_init(out_bs); |
972 | ||
f58c7b35 | 973 | sector_num = 0; // total number of sectors converted so far |
6b837bc4 JS |
974 | nb_sectors = total_sectors - sector_num; |
975 | local_progress = (float)100 / | |
4ee96418 | 976 | (nb_sectors / MIN(nb_sectors, IO_BUF_SIZE / 512)); |
6b837bc4 | 977 | |
ea2384d3 FB |
978 | for(;;) { |
979 | nb_sectors = total_sectors - sector_num; | |
b8fb60da | 980 | if (nb_sectors <= 0) { |
ea2384d3 | 981 | break; |
b8fb60da JS |
982 | } |
983 | if (nb_sectors >= (IO_BUF_SIZE / 512)) { | |
ea2384d3 | 984 | n = (IO_BUF_SIZE / 512); |
b8fb60da | 985 | } else { |
ea2384d3 | 986 | n = nb_sectors; |
b8fb60da | 987 | } |
926c2d23 AZ |
988 | |
989 | while (sector_num - bs_offset >= bs_sectors) { | |
990 | bs_i ++; | |
991 | assert (bs_i < bs_n); | |
992 | bs_offset += bs_sectors; | |
993 | bdrv_get_geometry(bs[bs_i], &bs_sectors); | |
0bfcd599 BS |
994 | /* printf("changing part: sector_num=%" PRId64 ", bs_i=%d, " |
995 | "bs_offset=%" PRId64 ", bs_sectors=%" PRId64 "\n", | |
926c2d23 AZ |
996 | sector_num, bs_i, bs_offset, bs_sectors); */ |
997 | } | |
998 | ||
b8fb60da | 999 | if (n > bs_offset + bs_sectors - sector_num) { |
926c2d23 | 1000 | n = bs_offset + bs_sectors - sector_num; |
b8fb60da | 1001 | } |
926c2d23 | 1002 | |
f2feebbd | 1003 | if (has_zero_init) { |
d032044f AS |
1004 | /* If the output image is being created as a copy on write image, |
1005 | assume that sectors which are unallocated in the input image | |
1006 | are present in both the output's and input's base images (no | |
1007 | need to copy them). */ | |
1008 | if (out_baseimg) { | |
1009 | if (!bdrv_is_allocated(bs[bs_i], sector_num - bs_offset, | |
1010 | n, &n1)) { | |
1011 | sector_num += n1; | |
1012 | continue; | |
1013 | } | |
1014 | /* The next 'n1' sectors are allocated in the input image. Copy | |
1015 | only those as they may be followed by unallocated sectors. */ | |
1016 | n = n1; | |
93c65b47 | 1017 | } |
93c65b47 AL |
1018 | } else { |
1019 | n1 = n; | |
f58c7b35 TS |
1020 | } |
1021 | ||
c2abccec MK |
1022 | ret = bdrv_read(bs[bs_i], sector_num - bs_offset, buf, n); |
1023 | if (ret < 0) { | |
3fba9d81 SH |
1024 | error_report("error while reading sector %" PRId64 ": %s", |
1025 | sector_num - bs_offset, strerror(-ret)); | |
c2abccec MK |
1026 | goto out; |
1027 | } | |
ea2384d3 FB |
1028 | /* NOTE: at the same time we convert, we do not write zero |
1029 | sectors to have a chance to compress the image. Ideally, we | |
1030 | should add a specific call to have the info to go faster */ | |
1031 | buf1 = buf; | |
1032 | while (n > 0) { | |
f58c7b35 TS |
1033 | /* If the output image is being created as a copy on write image, |
1034 | copy all sectors even the ones containing only NUL bytes, | |
93c65b47 AL |
1035 | because they may differ from the sectors in the base image. |
1036 | ||
1037 | If the output is to a host device, we also write out | |
1038 | sectors that are entirely 0, since whatever data was | |
1039 | already there is garbage, not 0s. */ | |
f2feebbd | 1040 | if (!has_zero_init || out_baseimg || |
a22f123c | 1041 | is_allocated_sectors_min(buf1, n, &n1, min_sparse)) { |
c2abccec MK |
1042 | ret = bdrv_write(out_bs, sector_num, buf1, n1); |
1043 | if (ret < 0) { | |
3fba9d81 SH |
1044 | error_report("error while writing sector %" PRId64 |
1045 | ": %s", sector_num, strerror(-ret)); | |
c2abccec MK |
1046 | goto out; |
1047 | } | |
ea2384d3 FB |
1048 | } |
1049 | sector_num += n1; | |
1050 | n -= n1; | |
1051 | buf1 += n1 * 512; | |
1052 | } | |
6b837bc4 | 1053 | qemu_progress_print(local_progress, 100); |
ea2384d3 FB |
1054 | } |
1055 | } | |
c2abccec | 1056 | out: |
6b837bc4 | 1057 | qemu_progress_end(); |
c2abccec MK |
1058 | free_option_parameters(create_options); |
1059 | free_option_parameters(param); | |
bb1c0597 | 1060 | qemu_vfree(buf); |
c2abccec MK |
1061 | if (out_bs) { |
1062 | bdrv_delete(out_bs); | |
1063 | } | |
31ca34b8 JS |
1064 | if (bs) { |
1065 | for (bs_i = 0; bs_i < bs_n; bs_i++) { | |
1066 | if (bs[bs_i]) { | |
1067 | bdrv_delete(bs[bs_i]); | |
1068 | } | |
c2abccec | 1069 | } |
7267c094 | 1070 | g_free(bs); |
c2abccec | 1071 | } |
c2abccec MK |
1072 | if (ret) { |
1073 | return 1; | |
1074 | } | |
ea2384d3 FB |
1075 | return 0; |
1076 | } | |
1077 | ||
57d1a2b6 | 1078 | |
faea38e7 FB |
1079 | static void dump_snapshots(BlockDriverState *bs) |
1080 | { | |
1081 | QEMUSnapshotInfo *sn_tab, *sn; | |
1082 | int nb_sns, i; | |
1083 | char buf[256]; | |
1084 | ||
1085 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
1086 | if (nb_sns <= 0) | |
1087 | return; | |
1088 | printf("Snapshot list:\n"); | |
1089 | printf("%s\n", bdrv_snapshot_dump(buf, sizeof(buf), NULL)); | |
1090 | for(i = 0; i < nb_sns; i++) { | |
1091 | sn = &sn_tab[i]; | |
1092 | printf("%s\n", bdrv_snapshot_dump(buf, sizeof(buf), sn)); | |
1093 | } | |
7267c094 | 1094 | g_free(sn_tab); |
faea38e7 FB |
1095 | } |
1096 | ||
ea2384d3 FB |
1097 | static int img_info(int argc, char **argv) |
1098 | { | |
1099 | int c; | |
1100 | const char *filename, *fmt; | |
ea2384d3 FB |
1101 | BlockDriverState *bs; |
1102 | char fmt_name[128], size_buf[128], dsize_buf[128]; | |
96b8f136 TS |
1103 | uint64_t total_sectors; |
1104 | int64_t allocated_size; | |
93b6b2a3 FB |
1105 | char backing_filename[1024]; |
1106 | char backing_filename2[1024]; | |
faea38e7 | 1107 | BlockDriverInfo bdi; |
ea2384d3 FB |
1108 | |
1109 | fmt = NULL; | |
1110 | for(;;) { | |
1111 | c = getopt(argc, argv, "f:h"); | |
b8fb60da | 1112 | if (c == -1) { |
ea2384d3 | 1113 | break; |
b8fb60da | 1114 | } |
ea2384d3 | 1115 | switch(c) { |
ef87394c | 1116 | case '?': |
ea2384d3 FB |
1117 | case 'h': |
1118 | help(); | |
1119 | break; | |
1120 | case 'f': | |
1121 | fmt = optarg; | |
1122 | break; | |
1123 | } | |
1124 | } | |
b8fb60da | 1125 | if (optind >= argc) { |
ea2384d3 | 1126 | help(); |
b8fb60da | 1127 | } |
ea2384d3 FB |
1128 | filename = argv[optind++]; |
1129 | ||
adfe078e | 1130 | bs = bdrv_new_open(filename, fmt, BDRV_O_FLAGS | BDRV_O_NO_BACKING); |
c2abccec MK |
1131 | if (!bs) { |
1132 | return 1; | |
1133 | } | |
ea2384d3 FB |
1134 | bdrv_get_format(bs, fmt_name, sizeof(fmt_name)); |
1135 | bdrv_get_geometry(bs, &total_sectors); | |
1136 | get_human_readable_size(size_buf, sizeof(size_buf), total_sectors * 512); | |
4a1d5e1f | 1137 | allocated_size = bdrv_get_allocated_file_size(bs); |
b8fb60da | 1138 | if (allocated_size < 0) { |
a10ea30b | 1139 | snprintf(dsize_buf, sizeof(dsize_buf), "unavailable"); |
b8fb60da | 1140 | } else { |
5fafdf24 | 1141 | get_human_readable_size(dsize_buf, sizeof(dsize_buf), |
de167e41 | 1142 | allocated_size); |
b8fb60da | 1143 | } |
ea2384d3 FB |
1144 | printf("image: %s\n" |
1145 | "file format: %s\n" | |
ec3757de | 1146 | "virtual size: %s (%" PRId64 " bytes)\n" |
ea2384d3 | 1147 | "disk size: %s\n", |
5fafdf24 | 1148 | filename, fmt_name, size_buf, |
ec3757de | 1149 | (total_sectors * 512), |
ea2384d3 | 1150 | dsize_buf); |
b8fb60da | 1151 | if (bdrv_is_encrypted(bs)) { |
ea2384d3 | 1152 | printf("encrypted: yes\n"); |
b8fb60da | 1153 | } |
faea38e7 | 1154 | if (bdrv_get_info(bs, &bdi) >= 0) { |
b8fb60da | 1155 | if (bdi.cluster_size != 0) { |
faea38e7 | 1156 | printf("cluster_size: %d\n", bdi.cluster_size); |
b8fb60da | 1157 | } |
faea38e7 | 1158 | } |
93b6b2a3 | 1159 | bdrv_get_backing_filename(bs, backing_filename, sizeof(backing_filename)); |
faea38e7 | 1160 | if (backing_filename[0] != '\0') { |
93b6b2a3 FB |
1161 | path_combine(backing_filename2, sizeof(backing_filename2), |
1162 | filename, backing_filename); | |
5fafdf24 | 1163 | printf("backing file: %s (actual path: %s)\n", |
93b6b2a3 FB |
1164 | backing_filename, |
1165 | backing_filename2); | |
faea38e7 FB |
1166 | } |
1167 | dump_snapshots(bs); | |
ea2384d3 FB |
1168 | bdrv_delete(bs); |
1169 | return 0; | |
1170 | } | |
1171 | ||
f7b4a940 AL |
1172 | #define SNAPSHOT_LIST 1 |
1173 | #define SNAPSHOT_CREATE 2 | |
1174 | #define SNAPSHOT_APPLY 3 | |
1175 | #define SNAPSHOT_DELETE 4 | |
1176 | ||
153859be | 1177 | static int img_snapshot(int argc, char **argv) |
f7b4a940 AL |
1178 | { |
1179 | BlockDriverState *bs; | |
1180 | QEMUSnapshotInfo sn; | |
1181 | char *filename, *snapshot_name = NULL; | |
c2abccec | 1182 | int c, ret = 0, bdrv_oflags; |
f7b4a940 AL |
1183 | int action = 0; |
1184 | qemu_timeval tv; | |
1185 | ||
710da702 | 1186 | bdrv_oflags = BDRV_O_FLAGS | BDRV_O_RDWR; |
f7b4a940 AL |
1187 | /* Parse commandline parameters */ |
1188 | for(;;) { | |
1189 | c = getopt(argc, argv, "la:c:d:h"); | |
b8fb60da | 1190 | if (c == -1) { |
f7b4a940 | 1191 | break; |
b8fb60da | 1192 | } |
f7b4a940 | 1193 | switch(c) { |
ef87394c | 1194 | case '?': |
f7b4a940 AL |
1195 | case 'h': |
1196 | help(); | |
153859be | 1197 | return 0; |
f7b4a940 AL |
1198 | case 'l': |
1199 | if (action) { | |
1200 | help(); | |
153859be | 1201 | return 0; |
f7b4a940 AL |
1202 | } |
1203 | action = SNAPSHOT_LIST; | |
f5edb014 | 1204 | bdrv_oflags &= ~BDRV_O_RDWR; /* no need for RW */ |
f7b4a940 AL |
1205 | break; |
1206 | case 'a': | |
1207 | if (action) { | |
1208 | help(); | |
153859be | 1209 | return 0; |
f7b4a940 AL |
1210 | } |
1211 | action = SNAPSHOT_APPLY; | |
1212 | snapshot_name = optarg; | |
1213 | break; | |
1214 | case 'c': | |
1215 | if (action) { | |
1216 | help(); | |
153859be | 1217 | return 0; |
f7b4a940 AL |
1218 | } |
1219 | action = SNAPSHOT_CREATE; | |
1220 | snapshot_name = optarg; | |
1221 | break; | |
1222 | case 'd': | |
1223 | if (action) { | |
1224 | help(); | |
153859be | 1225 | return 0; |
f7b4a940 AL |
1226 | } |
1227 | action = SNAPSHOT_DELETE; | |
1228 | snapshot_name = optarg; | |
1229 | break; | |
1230 | } | |
1231 | } | |
1232 | ||
b8fb60da | 1233 | if (optind >= argc) { |
f7b4a940 | 1234 | help(); |
b8fb60da | 1235 | } |
f7b4a940 AL |
1236 | filename = argv[optind++]; |
1237 | ||
1238 | /* Open the image */ | |
f163d073 | 1239 | bs = bdrv_new_open(filename, NULL, bdrv_oflags); |
c2abccec MK |
1240 | if (!bs) { |
1241 | return 1; | |
1242 | } | |
f7b4a940 AL |
1243 | |
1244 | /* Perform the requested action */ | |
1245 | switch(action) { | |
1246 | case SNAPSHOT_LIST: | |
1247 | dump_snapshots(bs); | |
1248 | break; | |
1249 | ||
1250 | case SNAPSHOT_CREATE: | |
1251 | memset(&sn, 0, sizeof(sn)); | |
1252 | pstrcpy(sn.name, sizeof(sn.name), snapshot_name); | |
1253 | ||
1254 | qemu_gettimeofday(&tv); | |
1255 | sn.date_sec = tv.tv_sec; | |
1256 | sn.date_nsec = tv.tv_usec * 1000; | |
1257 | ||
1258 | ret = bdrv_snapshot_create(bs, &sn); | |
b8fb60da | 1259 | if (ret) { |
15654a6d | 1260 | error_report("Could not create snapshot '%s': %d (%s)", |
f7b4a940 | 1261 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 1262 | } |
f7b4a940 AL |
1263 | break; |
1264 | ||
1265 | case SNAPSHOT_APPLY: | |
1266 | ret = bdrv_snapshot_goto(bs, snapshot_name); | |
b8fb60da | 1267 | if (ret) { |
15654a6d | 1268 | error_report("Could not apply snapshot '%s': %d (%s)", |
f7b4a940 | 1269 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 1270 | } |
f7b4a940 AL |
1271 | break; |
1272 | ||
1273 | case SNAPSHOT_DELETE: | |
1274 | ret = bdrv_snapshot_delete(bs, snapshot_name); | |
b8fb60da | 1275 | if (ret) { |
15654a6d | 1276 | error_report("Could not delete snapshot '%s': %d (%s)", |
f7b4a940 | 1277 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 1278 | } |
f7b4a940 AL |
1279 | break; |
1280 | } | |
1281 | ||
1282 | /* Cleanup */ | |
1283 | bdrv_delete(bs); | |
c2abccec MK |
1284 | if (ret) { |
1285 | return 1; | |
1286 | } | |
153859be | 1287 | return 0; |
f7b4a940 AL |
1288 | } |
1289 | ||
3e85c6fd KW |
1290 | static int img_rebase(int argc, char **argv) |
1291 | { | |
c2abccec | 1292 | BlockDriverState *bs, *bs_old_backing = NULL, *bs_new_backing = NULL; |
f163d073 | 1293 | BlockDriver *old_backing_drv, *new_backing_drv; |
3e85c6fd | 1294 | char *filename; |
661a0f71 | 1295 | const char *fmt, *cache, *out_basefmt, *out_baseimg; |
3e85c6fd KW |
1296 | int c, flags, ret; |
1297 | int unsafe = 0; | |
6b837bc4 | 1298 | int progress = 0; |
3e85c6fd KW |
1299 | |
1300 | /* Parse commandline parameters */ | |
e53dbee0 | 1301 | fmt = NULL; |
661a0f71 | 1302 | cache = BDRV_DEFAULT_CACHE; |
3e85c6fd KW |
1303 | out_baseimg = NULL; |
1304 | out_basefmt = NULL; | |
3e85c6fd | 1305 | for(;;) { |
661a0f71 | 1306 | c = getopt(argc, argv, "uhf:F:b:pt:"); |
b8fb60da | 1307 | if (c == -1) { |
3e85c6fd | 1308 | break; |
b8fb60da | 1309 | } |
3e85c6fd | 1310 | switch(c) { |
ef87394c | 1311 | case '?': |
3e85c6fd KW |
1312 | case 'h': |
1313 | help(); | |
1314 | return 0; | |
e53dbee0 KW |
1315 | case 'f': |
1316 | fmt = optarg; | |
1317 | break; | |
3e85c6fd KW |
1318 | case 'F': |
1319 | out_basefmt = optarg; | |
1320 | break; | |
1321 | case 'b': | |
1322 | out_baseimg = optarg; | |
1323 | break; | |
1324 | case 'u': | |
1325 | unsafe = 1; | |
1326 | break; | |
6b837bc4 JS |
1327 | case 'p': |
1328 | progress = 1; | |
1329 | break; | |
661a0f71 FS |
1330 | case 't': |
1331 | cache = optarg; | |
1332 | break; | |
3e85c6fd KW |
1333 | } |
1334 | } | |
1335 | ||
9a9d9dba | 1336 | if ((optind >= argc) || (!unsafe && !out_baseimg)) { |
3e85c6fd | 1337 | help(); |
b8fb60da | 1338 | } |
3e85c6fd KW |
1339 | filename = argv[optind++]; |
1340 | ||
6b837bc4 JS |
1341 | qemu_progress_init(progress, 2.0); |
1342 | qemu_progress_print(0, 100); | |
1343 | ||
661a0f71 | 1344 | flags = BDRV_O_RDWR | (unsafe ? BDRV_O_NO_BACKING : 0); |
c3993cdc | 1345 | ret = bdrv_parse_cache_flags(cache, &flags); |
661a0f71 FS |
1346 | if (ret < 0) { |
1347 | error_report("Invalid cache option: %s", cache); | |
1348 | return -1; | |
1349 | } | |
1350 | ||
3e85c6fd KW |
1351 | /* |
1352 | * Open the images. | |
1353 | * | |
1354 | * Ignore the old backing file for unsafe rebase in case we want to correct | |
1355 | * the reference to a renamed or moved backing file. | |
1356 | */ | |
f163d073 | 1357 | bs = bdrv_new_open(filename, fmt, flags); |
c2abccec MK |
1358 | if (!bs) { |
1359 | return 1; | |
1360 | } | |
3e85c6fd KW |
1361 | |
1362 | /* Find the right drivers for the backing files */ | |
1363 | old_backing_drv = NULL; | |
1364 | new_backing_drv = NULL; | |
1365 | ||
1366 | if (!unsafe && bs->backing_format[0] != '\0') { | |
1367 | old_backing_drv = bdrv_find_format(bs->backing_format); | |
1368 | if (old_backing_drv == NULL) { | |
15654a6d | 1369 | error_report("Invalid format name: '%s'", bs->backing_format); |
c2abccec MK |
1370 | ret = -1; |
1371 | goto out; | |
3e85c6fd KW |
1372 | } |
1373 | } | |
1374 | ||
1375 | if (out_basefmt != NULL) { | |
1376 | new_backing_drv = bdrv_find_format(out_basefmt); | |
1377 | if (new_backing_drv == NULL) { | |
15654a6d | 1378 | error_report("Invalid format name: '%s'", out_basefmt); |
c2abccec MK |
1379 | ret = -1; |
1380 | goto out; | |
3e85c6fd KW |
1381 | } |
1382 | } | |
1383 | ||
1384 | /* For safe rebasing we need to compare old and new backing file */ | |
1385 | if (unsafe) { | |
1386 | /* Make the compiler happy */ | |
1387 | bs_old_backing = NULL; | |
1388 | bs_new_backing = NULL; | |
1389 | } else { | |
1390 | char backing_name[1024]; | |
1391 | ||
1392 | bs_old_backing = bdrv_new("old_backing"); | |
1393 | bdrv_get_backing_filename(bs, backing_name, sizeof(backing_name)); | |
c2abccec MK |
1394 | ret = bdrv_open(bs_old_backing, backing_name, BDRV_O_FLAGS, |
1395 | old_backing_drv); | |
1396 | if (ret) { | |
15654a6d | 1397 | error_report("Could not open old backing file '%s'", backing_name); |
c2abccec | 1398 | goto out; |
3e85c6fd KW |
1399 | } |
1400 | ||
1401 | bs_new_backing = bdrv_new("new_backing"); | |
cdbae851 | 1402 | ret = bdrv_open(bs_new_backing, out_baseimg, BDRV_O_FLAGS, |
c2abccec MK |
1403 | new_backing_drv); |
1404 | if (ret) { | |
15654a6d | 1405 | error_report("Could not open new backing file '%s'", out_baseimg); |
c2abccec | 1406 | goto out; |
3e85c6fd KW |
1407 | } |
1408 | } | |
1409 | ||
1410 | /* | |
1411 | * Check each unallocated cluster in the COW file. If it is unallocated, | |
1412 | * accesses go to the backing file. We must therefore compare this cluster | |
1413 | * in the old and new backing file, and if they differ we need to copy it | |
1414 | * from the old backing file into the COW file. | |
1415 | * | |
1416 | * If qemu-img crashes during this step, no harm is done. The content of | |
1417 | * the image is the same as the original one at any time. | |
1418 | */ | |
1419 | if (!unsafe) { | |
1420 | uint64_t num_sectors; | |
1421 | uint64_t sector; | |
cc60e327 | 1422 | int n; |
d6771bfa T |
1423 | uint8_t * buf_old; |
1424 | uint8_t * buf_new; | |
6b837bc4 | 1425 | float local_progress; |
d6771bfa | 1426 | |
bb1c0597 KW |
1427 | buf_old = qemu_blockalign(bs, IO_BUF_SIZE); |
1428 | buf_new = qemu_blockalign(bs, IO_BUF_SIZE); | |
3e85c6fd KW |
1429 | |
1430 | bdrv_get_geometry(bs, &num_sectors); | |
1431 | ||
6b837bc4 | 1432 | local_progress = (float)100 / |
4ee96418 | 1433 | (num_sectors / MIN(num_sectors, IO_BUF_SIZE / 512)); |
3e85c6fd KW |
1434 | for (sector = 0; sector < num_sectors; sector += n) { |
1435 | ||
1436 | /* How many sectors can we handle with the next read? */ | |
1437 | if (sector + (IO_BUF_SIZE / 512) <= num_sectors) { | |
1438 | n = (IO_BUF_SIZE / 512); | |
1439 | } else { | |
1440 | n = num_sectors - sector; | |
1441 | } | |
1442 | ||
1443 | /* If the cluster is allocated, we don't need to take action */ | |
cc60e327 KW |
1444 | ret = bdrv_is_allocated(bs, sector, n, &n); |
1445 | if (ret) { | |
3e85c6fd KW |
1446 | continue; |
1447 | } | |
1448 | ||
1449 | /* Read old and new backing file */ | |
c2abccec MK |
1450 | ret = bdrv_read(bs_old_backing, sector, buf_old, n); |
1451 | if (ret < 0) { | |
15654a6d | 1452 | error_report("error while reading from old backing file"); |
c2abccec | 1453 | goto out; |
3e85c6fd | 1454 | } |
c2abccec MK |
1455 | ret = bdrv_read(bs_new_backing, sector, buf_new, n); |
1456 | if (ret < 0) { | |
15654a6d | 1457 | error_report("error while reading from new backing file"); |
c2abccec | 1458 | goto out; |
3e85c6fd KW |
1459 | } |
1460 | ||
1461 | /* If they differ, we need to write to the COW file */ | |
1462 | uint64_t written = 0; | |
1463 | ||
1464 | while (written < n) { | |
1465 | int pnum; | |
1466 | ||
1467 | if (compare_sectors(buf_old + written * 512, | |
60b1bd4f | 1468 | buf_new + written * 512, n - written, &pnum)) |
3e85c6fd KW |
1469 | { |
1470 | ret = bdrv_write(bs, sector + written, | |
1471 | buf_old + written * 512, pnum); | |
1472 | if (ret < 0) { | |
15654a6d | 1473 | error_report("Error while writing to COW image: %s", |
3e85c6fd | 1474 | strerror(-ret)); |
c2abccec | 1475 | goto out; |
3e85c6fd KW |
1476 | } |
1477 | } | |
1478 | ||
1479 | written += pnum; | |
1480 | } | |
6b837bc4 | 1481 | qemu_progress_print(local_progress, 100); |
3e85c6fd | 1482 | } |
d6771bfa | 1483 | |
bb1c0597 KW |
1484 | qemu_vfree(buf_old); |
1485 | qemu_vfree(buf_new); | |
3e85c6fd KW |
1486 | } |
1487 | ||
1488 | /* | |
1489 | * Change the backing file. All clusters that are different from the old | |
1490 | * backing file are overwritten in the COW file now, so the visible content | |
1491 | * doesn't change when we switch the backing file. | |
1492 | */ | |
1493 | ret = bdrv_change_backing_file(bs, out_baseimg, out_basefmt); | |
1494 | if (ret == -ENOSPC) { | |
15654a6d JS |
1495 | error_report("Could not change the backing file to '%s': No " |
1496 | "space left in the file header", out_baseimg); | |
3e85c6fd | 1497 | } else if (ret < 0) { |
15654a6d | 1498 | error_report("Could not change the backing file to '%s': %s", |
3e85c6fd KW |
1499 | out_baseimg, strerror(-ret)); |
1500 | } | |
1501 | ||
6b837bc4 | 1502 | qemu_progress_print(100, 0); |
3e85c6fd KW |
1503 | /* |
1504 | * TODO At this point it is possible to check if any clusters that are | |
1505 | * allocated in the COW file are the same in the backing file. If so, they | |
1506 | * could be dropped from the COW file. Don't do this before switching the | |
1507 | * backing file, in case of a crash this would lead to corruption. | |
1508 | */ | |
c2abccec | 1509 | out: |
6b837bc4 | 1510 | qemu_progress_end(); |
3e85c6fd KW |
1511 | /* Cleanup */ |
1512 | if (!unsafe) { | |
eb863add KW |
1513 | if (bs_old_backing != NULL) { |
1514 | bdrv_delete(bs_old_backing); | |
1515 | } | |
1516 | if (bs_new_backing != NULL) { | |
1517 | bdrv_delete(bs_new_backing); | |
1518 | } | |
3e85c6fd KW |
1519 | } |
1520 | ||
1521 | bdrv_delete(bs); | |
c2abccec MK |
1522 | if (ret) { |
1523 | return 1; | |
1524 | } | |
3e85c6fd KW |
1525 | return 0; |
1526 | } | |
1527 | ||
ae6b0ed6 SH |
1528 | static int img_resize(int argc, char **argv) |
1529 | { | |
1530 | int c, ret, relative; | |
1531 | const char *filename, *fmt, *size; | |
1532 | int64_t n, total_size; | |
2a81998a | 1533 | BlockDriverState *bs = NULL; |
ae6b0ed6 SH |
1534 | QEMUOptionParameter *param; |
1535 | QEMUOptionParameter resize_options[] = { | |
1536 | { | |
1537 | .name = BLOCK_OPT_SIZE, | |
1538 | .type = OPT_SIZE, | |
1539 | .help = "Virtual disk size" | |
1540 | }, | |
1541 | { NULL } | |
1542 | }; | |
1543 | ||
e80fec7f KW |
1544 | /* Remove size from argv manually so that negative numbers are not treated |
1545 | * as options by getopt. */ | |
1546 | if (argc < 3) { | |
1547 | help(); | |
1548 | return 1; | |
1549 | } | |
1550 | ||
1551 | size = argv[--argc]; | |
1552 | ||
1553 | /* Parse getopt arguments */ | |
ae6b0ed6 SH |
1554 | fmt = NULL; |
1555 | for(;;) { | |
1556 | c = getopt(argc, argv, "f:h"); | |
1557 | if (c == -1) { | |
1558 | break; | |
1559 | } | |
1560 | switch(c) { | |
ef87394c | 1561 | case '?': |
ae6b0ed6 SH |
1562 | case 'h': |
1563 | help(); | |
1564 | break; | |
1565 | case 'f': | |
1566 | fmt = optarg; | |
1567 | break; | |
1568 | } | |
1569 | } | |
e80fec7f | 1570 | if (optind >= argc) { |
ae6b0ed6 SH |
1571 | help(); |
1572 | } | |
1573 | filename = argv[optind++]; | |
ae6b0ed6 SH |
1574 | |
1575 | /* Choose grow, shrink, or absolute resize mode */ | |
1576 | switch (size[0]) { | |
1577 | case '+': | |
1578 | relative = 1; | |
1579 | size++; | |
1580 | break; | |
1581 | case '-': | |
1582 | relative = -1; | |
1583 | size++; | |
1584 | break; | |
1585 | default: | |
1586 | relative = 0; | |
1587 | break; | |
1588 | } | |
1589 | ||
1590 | /* Parse size */ | |
1591 | param = parse_option_parameters("", resize_options, NULL); | |
1592 | if (set_option_parameter(param, BLOCK_OPT_SIZE, size)) { | |
1593 | /* Error message already printed when size parsing fails */ | |
2a81998a JS |
1594 | ret = -1; |
1595 | goto out; | |
ae6b0ed6 SH |
1596 | } |
1597 | n = get_option_parameter(param, BLOCK_OPT_SIZE)->value.n; | |
1598 | free_option_parameters(param); | |
1599 | ||
1600 | bs = bdrv_new_open(filename, fmt, BDRV_O_FLAGS | BDRV_O_RDWR); | |
c2abccec | 1601 | if (!bs) { |
2a81998a JS |
1602 | ret = -1; |
1603 | goto out; | |
c2abccec | 1604 | } |
ae6b0ed6 SH |
1605 | |
1606 | if (relative) { | |
1607 | total_size = bdrv_getlength(bs) + n * relative; | |
1608 | } else { | |
1609 | total_size = n; | |
1610 | } | |
1611 | if (total_size <= 0) { | |
15654a6d | 1612 | error_report("New image size must be positive"); |
c2abccec MK |
1613 | ret = -1; |
1614 | goto out; | |
ae6b0ed6 SH |
1615 | } |
1616 | ||
1617 | ret = bdrv_truncate(bs, total_size); | |
1618 | switch (ret) { | |
1619 | case 0: | |
1620 | printf("Image resized.\n"); | |
1621 | break; | |
1622 | case -ENOTSUP: | |
15654a6d | 1623 | error_report("This image format does not support resize"); |
ae6b0ed6 SH |
1624 | break; |
1625 | case -EACCES: | |
15654a6d | 1626 | error_report("Image is read-only"); |
ae6b0ed6 SH |
1627 | break; |
1628 | default: | |
15654a6d | 1629 | error_report("Error resizing image (%d)", -ret); |
ae6b0ed6 SH |
1630 | break; |
1631 | } | |
c2abccec | 1632 | out: |
2a81998a JS |
1633 | if (bs) { |
1634 | bdrv_delete(bs); | |
1635 | } | |
c2abccec MK |
1636 | if (ret) { |
1637 | return 1; | |
1638 | } | |
ae6b0ed6 SH |
1639 | return 0; |
1640 | } | |
1641 | ||
c227f099 | 1642 | static const img_cmd_t img_cmds[] = { |
153859be SB |
1643 | #define DEF(option, callback, arg_string) \ |
1644 | { option, callback }, | |
1645 | #include "qemu-img-cmds.h" | |
1646 | #undef DEF | |
1647 | #undef GEN_DOCS | |
1648 | { NULL, NULL, }, | |
1649 | }; | |
1650 | ||
ea2384d3 FB |
1651 | int main(int argc, char **argv) |
1652 | { | |
c227f099 | 1653 | const img_cmd_t *cmd; |
153859be | 1654 | const char *cmdname; |
ea2384d3 | 1655 | |
53f76e58 KW |
1656 | error_set_progname(argv[0]); |
1657 | ||
ea2384d3 FB |
1658 | bdrv_init(); |
1659 | if (argc < 2) | |
1660 | help(); | |
153859be | 1661 | cmdname = argv[1]; |
8f9b157e | 1662 | argc--; argv++; |
153859be SB |
1663 | |
1664 | /* find the command */ | |
1665 | for(cmd = img_cmds; cmd->name != NULL; cmd++) { | |
1666 | if (!strcmp(cmdname, cmd->name)) { | |
1667 | return cmd->handler(argc, argv); | |
1668 | } | |
ea2384d3 | 1669 | } |
153859be SB |
1670 | |
1671 | /* not found */ | |
1672 | help(); | |
ea2384d3 FB |
1673 | return 0; |
1674 | } |