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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 |
137519ce | 43 | |
ea2384d3 FB |
44 | static void format_print(void *opaque, const char *name) |
45 | { | |
46 | printf(" %s", name); | |
47 | } | |
48 | ||
d2c639d6 | 49 | /* Please keep in synch with qemu-img.texi */ |
3f379ab1 | 50 | static void help(void) |
ea2384d3 | 51 | { |
e00291c0 PB |
52 | const char *help_msg = |
53 | "qemu-img version " QEMU_VERSION ", Copyright (c) 2004-2008 Fabrice Bellard\n" | |
3f020d70 | 54 | "usage: qemu-img command [command options]\n" |
55 | "QEMU disk image utility\n" | |
56 | "\n" | |
57 | "Command syntax:\n" | |
153859be SB |
58 | #define DEF(option, callback, arg_string) \ |
59 | " " arg_string "\n" | |
60 | #include "qemu-img-cmds.h" | |
61 | #undef DEF | |
62 | #undef GEN_DOCS | |
3f020d70 | 63 | "\n" |
64 | "Command parameters:\n" | |
65 | " 'filename' is a disk image filename\n" | |
66 | " 'fmt' is the disk image format. It is guessed automatically in most cases\n" | |
67 | " 'size' is the disk image size in bytes. Optional suffixes\n" | |
68 | " 'k' or 'K' (kilobyte, 1024), 'M' (megabyte, 1024k), 'G' (gigabyte, 1024M)\n" | |
69 | " and T (terabyte, 1024G) are supported. 'b' is ignored.\n" | |
70 | " 'output_filename' is the destination disk image filename\n" | |
71 | " 'output_fmt' is the destination format\n" | |
72 | " 'options' is a comma separated list of format specific options in a\n" | |
73 | " name=value format. Use -o ? for an overview of the options supported by the\n" | |
74 | " used format\n" | |
75 | " '-c' indicates that target image must be compressed (qcow format only)\n" | |
76 | " '-u' enables unsafe rebasing. It is assumed that old and new backing file\n" | |
77 | " match exactly. The image doesn't need a working backing file before\n" | |
78 | " rebasing in this case (useful for renaming the backing file)\n" | |
79 | " '-h' with or without a command shows this help and lists the supported formats\n" | |
6b837bc4 | 80 | " '-p' show progress of command (only certain commands)\n" |
3f020d70 | 81 | "\n" |
82 | "Parameters to snapshot subcommand:\n" | |
83 | " 'snapshot' is the name of the snapshot to create, apply or delete\n" | |
84 | " '-a' applies a snapshot (revert disk to saved state)\n" | |
85 | " '-c' creates a snapshot\n" | |
86 | " '-d' deletes a snapshot\n" | |
e00291c0 PB |
87 | " '-l' lists all snapshots in the given image\n"; |
88 | ||
89 | printf("%s\nSupported formats:", help_msg); | |
ea2384d3 FB |
90 | bdrv_iterate_format(format_print, NULL); |
91 | printf("\n"); | |
92 | exit(1); | |
93 | } | |
94 | ||
ea2384d3 FB |
95 | #if defined(WIN32) |
96 | /* XXX: put correct support for win32 */ | |
97 | static int read_password(char *buf, int buf_size) | |
98 | { | |
99 | int c, i; | |
100 | printf("Password: "); | |
101 | fflush(stdout); | |
102 | i = 0; | |
103 | for(;;) { | |
104 | c = getchar(); | |
105 | if (c == '\n') | |
106 | break; | |
107 | if (i < (buf_size - 1)) | |
108 | buf[i++] = c; | |
109 | } | |
110 | buf[i] = '\0'; | |
111 | return 0; | |
112 | } | |
113 | ||
114 | #else | |
115 | ||
116 | #include <termios.h> | |
117 | ||
118 | static struct termios oldtty; | |
119 | ||
120 | static void term_exit(void) | |
121 | { | |
122 | tcsetattr (0, TCSANOW, &oldtty); | |
123 | } | |
124 | ||
125 | static void term_init(void) | |
126 | { | |
127 | struct termios tty; | |
128 | ||
129 | tcgetattr (0, &tty); | |
130 | oldtty = tty; | |
131 | ||
132 | tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP | |
133 | |INLCR|IGNCR|ICRNL|IXON); | |
134 | tty.c_oflag |= OPOST; | |
135 | tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN); | |
136 | tty.c_cflag &= ~(CSIZE|PARENB); | |
137 | tty.c_cflag |= CS8; | |
138 | tty.c_cc[VMIN] = 1; | |
139 | tty.c_cc[VTIME] = 0; | |
3b46e624 | 140 | |
ea2384d3 FB |
141 | tcsetattr (0, TCSANOW, &tty); |
142 | ||
143 | atexit(term_exit); | |
144 | } | |
145 | ||
3f379ab1 | 146 | static int read_password(char *buf, int buf_size) |
ea2384d3 FB |
147 | { |
148 | uint8_t ch; | |
149 | int i, ret; | |
150 | ||
151 | printf("password: "); | |
152 | fflush(stdout); | |
153 | term_init(); | |
154 | i = 0; | |
155 | for(;;) { | |
156 | ret = read(0, &ch, 1); | |
157 | if (ret == -1) { | |
158 | if (errno == EAGAIN || errno == EINTR) { | |
159 | continue; | |
160 | } else { | |
161 | ret = -1; | |
162 | break; | |
163 | } | |
164 | } else if (ret == 0) { | |
165 | ret = -1; | |
166 | break; | |
167 | } else { | |
168 | if (ch == '\r') { | |
169 | ret = 0; | |
170 | break; | |
171 | } | |
172 | if (i < (buf_size - 1)) | |
173 | buf[i++] = ch; | |
174 | } | |
175 | } | |
176 | term_exit(); | |
177 | buf[i] = '\0'; | |
178 | printf("\n"); | |
179 | return ret; | |
180 | } | |
181 | #endif | |
182 | ||
4ac8aacd JS |
183 | static int print_block_option_help(const char *filename, const char *fmt) |
184 | { | |
185 | BlockDriver *drv, *proto_drv; | |
186 | QEMUOptionParameter *create_options = NULL; | |
187 | ||
188 | /* Find driver and parse its options */ | |
189 | drv = bdrv_find_format(fmt); | |
190 | if (!drv) { | |
15654a6d | 191 | error_report("Unknown file format '%s'", fmt); |
4ac8aacd JS |
192 | return 1; |
193 | } | |
194 | ||
195 | proto_drv = bdrv_find_protocol(filename); | |
196 | if (!proto_drv) { | |
15654a6d | 197 | error_report("Unknown protocol '%s'", filename); |
4ac8aacd JS |
198 | return 1; |
199 | } | |
200 | ||
201 | create_options = append_option_parameters(create_options, | |
202 | drv->create_options); | |
203 | create_options = append_option_parameters(create_options, | |
204 | proto_drv->create_options); | |
205 | print_option_help(create_options); | |
206 | free_option_parameters(create_options); | |
207 | return 0; | |
208 | } | |
209 | ||
75c23805 | 210 | static BlockDriverState *bdrv_new_open(const char *filename, |
9bc378c1 | 211 | const char *fmt, |
f163d073 | 212 | int flags) |
75c23805 FB |
213 | { |
214 | BlockDriverState *bs; | |
215 | BlockDriver *drv; | |
216 | char password[256]; | |
b9eaf9ec | 217 | int ret; |
75c23805 | 218 | |
b9eaf9ec | 219 | bs = bdrv_new("image"); |
ad717139 | 220 | |
75c23805 FB |
221 | if (fmt) { |
222 | drv = bdrv_find_format(fmt); | |
c2abccec | 223 | if (!drv) { |
15654a6d | 224 | error_report("Unknown file format '%s'", fmt); |
c2abccec MK |
225 | goto fail; |
226 | } | |
75c23805 FB |
227 | } else { |
228 | drv = NULL; | |
229 | } | |
b9eaf9ec KW |
230 | |
231 | ret = bdrv_open(bs, filename, flags, drv); | |
232 | if (ret < 0) { | |
233 | error_report("Could not open '%s': %s", filename, strerror(-ret)); | |
c2abccec | 234 | goto fail; |
75c23805 | 235 | } |
b9eaf9ec | 236 | |
75c23805 FB |
237 | if (bdrv_is_encrypted(bs)) { |
238 | printf("Disk image '%s' is encrypted.\n", filename); | |
c2abccec | 239 | if (read_password(password, sizeof(password)) < 0) { |
15654a6d | 240 | error_report("No password given"); |
c2abccec MK |
241 | goto fail; |
242 | } | |
243 | if (bdrv_set_key(bs, password) < 0) { | |
15654a6d | 244 | error_report("invalid password"); |
c2abccec MK |
245 | goto fail; |
246 | } | |
75c23805 FB |
247 | } |
248 | return bs; | |
c2abccec MK |
249 | fail: |
250 | if (bs) { | |
251 | bdrv_delete(bs); | |
252 | } | |
253 | return NULL; | |
75c23805 FB |
254 | } |
255 | ||
c2abccec | 256 | static int add_old_style_options(const char *fmt, QEMUOptionParameter *list, |
eec77d9e JS |
257 | const char *base_filename, |
258 | const char *base_fmt) | |
efa84d43 | 259 | { |
efa84d43 KW |
260 | if (base_filename) { |
261 | if (set_option_parameter(list, BLOCK_OPT_BACKING_FILE, base_filename)) { | |
15654a6d JS |
262 | error_report("Backing file not supported for file format '%s'", |
263 | fmt); | |
c2abccec | 264 | return -1; |
efa84d43 KW |
265 | } |
266 | } | |
267 | if (base_fmt) { | |
268 | if (set_option_parameter(list, BLOCK_OPT_BACKING_FMT, base_fmt)) { | |
15654a6d JS |
269 | error_report("Backing file format not supported for file " |
270 | "format '%s'", fmt); | |
c2abccec | 271 | return -1; |
efa84d43 KW |
272 | } |
273 | } | |
c2abccec | 274 | return 0; |
efa84d43 KW |
275 | } |
276 | ||
ea2384d3 FB |
277 | static int img_create(int argc, char **argv) |
278 | { | |
eec77d9e | 279 | int c, ret = 0; |
1da7cfbd | 280 | uint64_t img_size = -1; |
ea2384d3 | 281 | const char *fmt = "raw"; |
9230eaf6 | 282 | const char *base_fmt = NULL; |
ea2384d3 FB |
283 | const char *filename; |
284 | const char *base_filename = NULL; | |
9ea2ea71 | 285 | char *options = NULL; |
3b46e624 | 286 | |
ea2384d3 | 287 | for(;;) { |
9ea2ea71 | 288 | c = getopt(argc, argv, "F:b:f:he6o:"); |
b8fb60da | 289 | if (c == -1) { |
ea2384d3 | 290 | break; |
b8fb60da | 291 | } |
ea2384d3 | 292 | switch(c) { |
ef87394c | 293 | case '?': |
ea2384d3 FB |
294 | case 'h': |
295 | help(); | |
296 | break; | |
9230eaf6 AL |
297 | case 'F': |
298 | base_fmt = optarg; | |
299 | break; | |
ea2384d3 FB |
300 | case 'b': |
301 | base_filename = optarg; | |
302 | break; | |
303 | case 'f': | |
304 | fmt = optarg; | |
305 | break; | |
306 | case 'e': | |
15654a6d | 307 | error_report("qemu-img: option -e is deprecated, please use \'-o " |
eec77d9e JS |
308 | "encryption\' instead!"); |
309 | return 1; | |
d8871c5a | 310 | case '6': |
15654a6d | 311 | error_report("qemu-img: option -6 is deprecated, please use \'-o " |
eec77d9e JS |
312 | "compat6\' instead!"); |
313 | return 1; | |
9ea2ea71 KW |
314 | case 'o': |
315 | options = optarg; | |
316 | break; | |
ea2384d3 FB |
317 | } |
318 | } | |
9230eaf6 | 319 | |
b50cbabc | 320 | /* Get the filename */ |
b8fb60da | 321 | if (optind >= argc) { |
b50cbabc | 322 | help(); |
b8fb60da | 323 | } |
b50cbabc MK |
324 | filename = argv[optind++]; |
325 | ||
1da7cfbd JS |
326 | /* Get image size, if specified */ |
327 | if (optind < argc) { | |
70b4f4bb | 328 | int64_t sval; |
1da7cfbd JS |
329 | sval = strtosz_suffix(argv[optind++], NULL, STRTOSZ_DEFSUFFIX_B); |
330 | if (sval < 0) { | |
15654a6d | 331 | error_report("Invalid image size specified! You may use k, M, G or " |
1da7cfbd | 332 | "T suffixes for "); |
15654a6d | 333 | error_report("kilobytes, megabytes, gigabytes and terabytes."); |
1da7cfbd JS |
334 | ret = -1; |
335 | goto out; | |
336 | } | |
337 | img_size = (uint64_t)sval; | |
338 | } | |
339 | ||
4ac8aacd JS |
340 | if (options && !strcmp(options, "?")) { |
341 | ret = print_block_option_help(filename, fmt); | |
342 | goto out; | |
343 | } | |
344 | ||
f88e1a42 JS |
345 | ret = bdrv_img_create(filename, fmt, base_filename, base_fmt, |
346 | options, img_size, BDRV_O_FLAGS); | |
c2abccec MK |
347 | out: |
348 | if (ret) { | |
349 | return 1; | |
350 | } | |
ea2384d3 FB |
351 | return 0; |
352 | } | |
353 | ||
e076f338 KW |
354 | /* |
355 | * Checks an image for consistency. Exit codes: | |
356 | * | |
357 | * 0 - Check completed, image is good | |
358 | * 1 - Check not completed because of internal errors | |
359 | * 2 - Check completed, image is corrupted | |
360 | * 3 - Check completed, image has leaked clusters, but is good otherwise | |
361 | */ | |
1585969c AL |
362 | static int img_check(int argc, char **argv) |
363 | { | |
364 | int c, ret; | |
365 | const char *filename, *fmt; | |
1585969c | 366 | BlockDriverState *bs; |
e076f338 | 367 | BdrvCheckResult result; |
1585969c AL |
368 | |
369 | fmt = NULL; | |
370 | for(;;) { | |
371 | c = getopt(argc, argv, "f:h"); | |
b8fb60da | 372 | if (c == -1) { |
1585969c | 373 | break; |
b8fb60da | 374 | } |
1585969c | 375 | switch(c) { |
ef87394c | 376 | case '?': |
1585969c AL |
377 | case 'h': |
378 | help(); | |
379 | break; | |
380 | case 'f': | |
381 | fmt = optarg; | |
382 | break; | |
383 | } | |
384 | } | |
b8fb60da | 385 | if (optind >= argc) { |
1585969c | 386 | help(); |
b8fb60da | 387 | } |
1585969c AL |
388 | filename = argv[optind++]; |
389 | ||
adfe078e | 390 | bs = bdrv_new_open(filename, fmt, BDRV_O_FLAGS); |
c2abccec MK |
391 | if (!bs) { |
392 | return 1; | |
393 | } | |
e076f338 KW |
394 | ret = bdrv_check(bs, &result); |
395 | ||
396 | if (ret == -ENOTSUP) { | |
15654a6d | 397 | error_report("This image format does not support checks"); |
e076f338 KW |
398 | bdrv_delete(bs); |
399 | return 1; | |
400 | } | |
401 | ||
402 | if (!(result.corruptions || result.leaks || result.check_errors)) { | |
403 | printf("No errors were found on the image.\n"); | |
404 | } else { | |
405 | if (result.corruptions) { | |
406 | printf("\n%d errors were found on the image.\n" | |
407 | "Data may be corrupted, or further writes to the image " | |
408 | "may corrupt it.\n", | |
409 | result.corruptions); | |
410 | } | |
411 | ||
412 | if (result.leaks) { | |
413 | printf("\n%d leaked clusters were found on the image.\n" | |
414 | "This means waste of disk space, but no harm to data.\n", | |
415 | result.leaks); | |
416 | } | |
417 | ||
418 | if (result.check_errors) { | |
419 | printf("\n%d internal errors have occurred during the check.\n", | |
420 | result.check_errors); | |
1585969c | 421 | } |
1585969c AL |
422 | } |
423 | ||
424 | bdrv_delete(bs); | |
e076f338 KW |
425 | |
426 | if (ret < 0 || result.check_errors) { | |
427 | printf("\nAn error has occurred during the check: %s\n" | |
428 | "The check is not complete and may have missed error.\n", | |
429 | strerror(-ret)); | |
c2abccec MK |
430 | return 1; |
431 | } | |
e076f338 KW |
432 | |
433 | if (result.corruptions) { | |
434 | return 2; | |
435 | } else if (result.leaks) { | |
436 | return 3; | |
437 | } else { | |
438 | return 0; | |
439 | } | |
1585969c AL |
440 | } |
441 | ||
ea2384d3 FB |
442 | static int img_commit(int argc, char **argv) |
443 | { | |
444 | int c, ret; | |
445 | const char *filename, *fmt; | |
ea2384d3 FB |
446 | BlockDriverState *bs; |
447 | ||
448 | fmt = NULL; | |
449 | for(;;) { | |
450 | c = getopt(argc, argv, "f:h"); | |
b8fb60da | 451 | if (c == -1) { |
ea2384d3 | 452 | break; |
b8fb60da | 453 | } |
ea2384d3 | 454 | switch(c) { |
ef87394c | 455 | case '?': |
ea2384d3 FB |
456 | case 'h': |
457 | help(); | |
458 | break; | |
459 | case 'f': | |
460 | fmt = optarg; | |
461 | break; | |
462 | } | |
463 | } | |
b8fb60da | 464 | if (optind >= argc) { |
ea2384d3 | 465 | help(); |
b8fb60da | 466 | } |
ea2384d3 FB |
467 | filename = argv[optind++]; |
468 | ||
adfe078e | 469 | bs = bdrv_new_open(filename, fmt, BDRV_O_FLAGS | BDRV_O_RDWR); |
c2abccec MK |
470 | if (!bs) { |
471 | return 1; | |
472 | } | |
ea2384d3 FB |
473 | ret = bdrv_commit(bs); |
474 | switch(ret) { | |
475 | case 0: | |
476 | printf("Image committed.\n"); | |
477 | break; | |
478 | case -ENOENT: | |
15654a6d | 479 | error_report("No disk inserted"); |
ea2384d3 FB |
480 | break; |
481 | case -EACCES: | |
15654a6d | 482 | error_report("Image is read-only"); |
ea2384d3 FB |
483 | break; |
484 | case -ENOTSUP: | |
15654a6d | 485 | error_report("Image is already committed"); |
ea2384d3 FB |
486 | break; |
487 | default: | |
15654a6d | 488 | error_report("Error while committing image"); |
ea2384d3 FB |
489 | break; |
490 | } | |
491 | ||
492 | bdrv_delete(bs); | |
c2abccec MK |
493 | if (ret) { |
494 | return 1; | |
495 | } | |
ea2384d3 FB |
496 | return 0; |
497 | } | |
498 | ||
499 | static int is_not_zero(const uint8_t *sector, int len) | |
500 | { | |
501 | int i; | |
502 | len >>= 2; | |
503 | for(i = 0;i < len; i++) { | |
504 | if (((uint32_t *)sector)[i] != 0) | |
505 | return 1; | |
506 | } | |
507 | return 0; | |
508 | } | |
509 | ||
f58c7b35 TS |
510 | /* |
511 | * Returns true iff the first sector pointed to by 'buf' contains at least | |
512 | * a non-NUL byte. | |
513 | * | |
514 | * 'pnum' is set to the number of sectors (including and immediately following | |
515 | * the first one) that are known to be in the same allocated/unallocated state. | |
516 | */ | |
ea2384d3 FB |
517 | static int is_allocated_sectors(const uint8_t *buf, int n, int *pnum) |
518 | { | |
519 | int v, i; | |
520 | ||
521 | if (n <= 0) { | |
522 | *pnum = 0; | |
523 | return 0; | |
524 | } | |
525 | v = is_not_zero(buf, 512); | |
526 | for(i = 1; i < n; i++) { | |
527 | buf += 512; | |
528 | if (v != is_not_zero(buf, 512)) | |
529 | break; | |
530 | } | |
531 | *pnum = i; | |
532 | return v; | |
533 | } | |
534 | ||
3e85c6fd KW |
535 | /* |
536 | * Compares two buffers sector by sector. Returns 0 if the first sector of both | |
537 | * buffers matches, non-zero otherwise. | |
538 | * | |
539 | * pnum is set to the number of sectors (including and immediately following | |
540 | * the first one) that are known to have the same comparison result | |
541 | */ | |
542 | static int compare_sectors(const uint8_t *buf1, const uint8_t *buf2, int n, | |
543 | int *pnum) | |
544 | { | |
545 | int res, i; | |
546 | ||
547 | if (n <= 0) { | |
548 | *pnum = 0; | |
549 | return 0; | |
550 | } | |
551 | ||
552 | res = !!memcmp(buf1, buf2, 512); | |
553 | for(i = 1; i < n; i++) { | |
554 | buf1 += 512; | |
555 | buf2 += 512; | |
556 | ||
557 | if (!!memcmp(buf1, buf2, 512) != res) { | |
558 | break; | |
559 | } | |
560 | } | |
561 | ||
562 | *pnum = i; | |
563 | return res; | |
564 | } | |
565 | ||
80ee15a6 | 566 | #define IO_BUF_SIZE (2 * 1024 * 1024) |
ea2384d3 FB |
567 | |
568 | static int img_convert(int argc, char **argv) | |
569 | { | |
eec77d9e | 570 | int c, ret = 0, n, n1, bs_n, bs_i, compress, cluster_size, cluster_sectors; |
6b837bc4 | 571 | int progress = 0; |
f58c7b35 | 572 | const char *fmt, *out_fmt, *out_baseimg, *out_filename; |
b50cbabc | 573 | BlockDriver *drv, *proto_drv; |
c2abccec | 574 | BlockDriverState **bs = NULL, *out_bs = NULL; |
96b8f136 TS |
575 | int64_t total_sectors, nb_sectors, sector_num, bs_offset; |
576 | uint64_t bs_sectors; | |
c2abccec | 577 | uint8_t * buf = NULL; |
ea2384d3 | 578 | const uint8_t *buf1; |
faea38e7 | 579 | BlockDriverInfo bdi; |
b50cbabc | 580 | QEMUOptionParameter *param = NULL, *create_options = NULL; |
a18953fb | 581 | QEMUOptionParameter *out_baseimg_param; |
efa84d43 | 582 | char *options = NULL; |
51ef6727 | 583 | const char *snapshot_name = NULL; |
6b837bc4 | 584 | float local_progress; |
ea2384d3 FB |
585 | |
586 | fmt = NULL; | |
587 | out_fmt = "raw"; | |
f58c7b35 | 588 | out_baseimg = NULL; |
eec77d9e | 589 | compress = 0; |
ea2384d3 | 590 | for(;;) { |
6b837bc4 | 591 | c = getopt(argc, argv, "f:O:B:s:hce6o:p"); |
b8fb60da | 592 | if (c == -1) { |
ea2384d3 | 593 | break; |
b8fb60da | 594 | } |
ea2384d3 | 595 | switch(c) { |
ef87394c | 596 | case '?': |
ea2384d3 FB |
597 | case 'h': |
598 | help(); | |
599 | break; | |
600 | case 'f': | |
601 | fmt = optarg; | |
602 | break; | |
603 | case 'O': | |
604 | out_fmt = optarg; | |
605 | break; | |
f58c7b35 TS |
606 | case 'B': |
607 | out_baseimg = optarg; | |
608 | break; | |
ea2384d3 | 609 | case 'c': |
eec77d9e | 610 | compress = 1; |
ea2384d3 FB |
611 | break; |
612 | case 'e': | |
15654a6d | 613 | error_report("qemu-img: option -e is deprecated, please use \'-o " |
eec77d9e JS |
614 | "encryption\' instead!"); |
615 | return 1; | |
ec36ba14 | 616 | case '6': |
15654a6d | 617 | error_report("qemu-img: option -6 is deprecated, please use \'-o " |
eec77d9e JS |
618 | "compat6\' instead!"); |
619 | return 1; | |
efa84d43 KW |
620 | case 'o': |
621 | options = optarg; | |
622 | break; | |
51ef6727 | 623 | case 's': |
624 | snapshot_name = optarg; | |
625 | break; | |
6b837bc4 JS |
626 | case 'p': |
627 | progress = 1; | |
628 | break; | |
ea2384d3 FB |
629 | } |
630 | } | |
3b46e624 | 631 | |
926c2d23 | 632 | bs_n = argc - optind - 1; |
b8fb60da JS |
633 | if (bs_n < 1) { |
634 | help(); | |
635 | } | |
926c2d23 AZ |
636 | |
637 | out_filename = argv[argc - 1]; | |
f58c7b35 | 638 | |
4ac8aacd JS |
639 | if (options && !strcmp(options, "?")) { |
640 | ret = print_block_option_help(out_filename, out_fmt); | |
641 | goto out; | |
642 | } | |
643 | ||
c2abccec | 644 | if (bs_n > 1 && out_baseimg) { |
15654a6d JS |
645 | error_report("-B makes no sense when concatenating multiple input " |
646 | "images"); | |
31ca34b8 JS |
647 | ret = -1; |
648 | goto out; | |
c2abccec | 649 | } |
926c2d23 | 650 | |
6b837bc4 JS |
651 | qemu_progress_init(progress, 2.0); |
652 | qemu_progress_print(0, 100); | |
653 | ||
5bdf61fd | 654 | bs = qemu_mallocz(bs_n * sizeof(BlockDriverState *)); |
926c2d23 AZ |
655 | |
656 | total_sectors = 0; | |
657 | for (bs_i = 0; bs_i < bs_n; bs_i++) { | |
adfe078e | 658 | bs[bs_i] = bdrv_new_open(argv[optind + bs_i], fmt, BDRV_O_FLAGS); |
c2abccec | 659 | if (!bs[bs_i]) { |
15654a6d | 660 | error_report("Could not open '%s'", argv[optind + bs_i]); |
c2abccec MK |
661 | ret = -1; |
662 | goto out; | |
663 | } | |
926c2d23 AZ |
664 | bdrv_get_geometry(bs[bs_i], &bs_sectors); |
665 | total_sectors += bs_sectors; | |
666 | } | |
ea2384d3 | 667 | |
51ef6727 | 668 | if (snapshot_name != NULL) { |
669 | if (bs_n > 1) { | |
15654a6d | 670 | error_report("No support for concatenating multiple snapshot\n"); |
51ef6727 | 671 | ret = -1; |
672 | goto out; | |
673 | } | |
674 | if (bdrv_snapshot_load_tmp(bs[0], snapshot_name) < 0) { | |
15654a6d | 675 | error_report("Failed to load snapshot\n"); |
51ef6727 | 676 | ret = -1; |
677 | goto out; | |
678 | } | |
679 | } | |
680 | ||
efa84d43 | 681 | /* Find driver and parse its options */ |
ea2384d3 | 682 | drv = bdrv_find_format(out_fmt); |
c2abccec | 683 | if (!drv) { |
15654a6d | 684 | error_report("Unknown file format '%s'", out_fmt); |
c2abccec MK |
685 | ret = -1; |
686 | goto out; | |
687 | } | |
efa84d43 | 688 | |
b50cbabc | 689 | proto_drv = bdrv_find_protocol(out_filename); |
c2abccec | 690 | if (!proto_drv) { |
15654a6d | 691 | error_report("Unknown protocol '%s'", out_filename); |
c2abccec MK |
692 | ret = -1; |
693 | goto out; | |
694 | } | |
b50cbabc MK |
695 | |
696 | create_options = append_option_parameters(create_options, | |
697 | drv->create_options); | |
698 | create_options = append_option_parameters(create_options, | |
699 | proto_drv->create_options); | |
db08adf5 | 700 | |
efa84d43 | 701 | if (options) { |
b50cbabc | 702 | param = parse_option_parameters(options, create_options, param); |
efa84d43 | 703 | if (param == NULL) { |
15654a6d | 704 | error_report("Invalid options for file format '%s'.", out_fmt); |
c2abccec MK |
705 | ret = -1; |
706 | goto out; | |
efa84d43 KW |
707 | } |
708 | } else { | |
b50cbabc | 709 | param = parse_option_parameters("", create_options, param); |
efa84d43 KW |
710 | } |
711 | ||
712 | set_option_parameter_int(param, BLOCK_OPT_SIZE, total_sectors * 512); | |
eec77d9e | 713 | ret = add_old_style_options(out_fmt, param, out_baseimg, NULL); |
c2abccec MK |
714 | if (ret < 0) { |
715 | goto out; | |
716 | } | |
efa84d43 | 717 | |
a18953fb KW |
718 | /* Get backing file name if -o backing_file was used */ |
719 | out_baseimg_param = get_option_parameter(param, BLOCK_OPT_BACKING_FILE); | |
720 | if (out_baseimg_param) { | |
721 | out_baseimg = out_baseimg_param->value.s; | |
722 | } | |
723 | ||
efa84d43 | 724 | /* Check if compression is supported */ |
eec77d9e | 725 | if (compress) { |
efa84d43 KW |
726 | QEMUOptionParameter *encryption = |
727 | get_option_parameter(param, BLOCK_OPT_ENCRYPT); | |
728 | ||
729 | if (!drv->bdrv_write_compressed) { | |
15654a6d | 730 | error_report("Compression not supported for this file format"); |
c2abccec MK |
731 | ret = -1; |
732 | goto out; | |
efa84d43 KW |
733 | } |
734 | ||
735 | if (encryption && encryption->value.n) { | |
15654a6d JS |
736 | error_report("Compression and encryption not supported at " |
737 | "the same time"); | |
c2abccec MK |
738 | ret = -1; |
739 | goto out; | |
efa84d43 KW |
740 | } |
741 | } | |
742 | ||
743 | /* Create the new image */ | |
744 | ret = bdrv_create(drv, out_filename, param); | |
ea2384d3 FB |
745 | if (ret < 0) { |
746 | if (ret == -ENOTSUP) { | |
15654a6d JS |
747 | error_report("Formatting not supported for file format '%s'", |
748 | out_fmt); | |
6e9ea0c0 | 749 | } else if (ret == -EFBIG) { |
15654a6d JS |
750 | error_report("The image size is too large for file format '%s'", |
751 | out_fmt); | |
ea2384d3 | 752 | } else { |
15654a6d JS |
753 | error_report("%s: error while converting %s: %s", |
754 | out_filename, out_fmt, strerror(-ret)); | |
ea2384d3 | 755 | } |
c2abccec | 756 | goto out; |
ea2384d3 | 757 | } |
3b46e624 | 758 | |
1bd8e175 KW |
759 | out_bs = bdrv_new_open(out_filename, out_fmt, |
760 | BDRV_O_FLAGS | BDRV_O_RDWR | BDRV_O_NO_FLUSH); | |
c2abccec MK |
761 | if (!out_bs) { |
762 | ret = -1; | |
763 | goto out; | |
764 | } | |
ea2384d3 | 765 | |
926c2d23 AZ |
766 | bs_i = 0; |
767 | bs_offset = 0; | |
768 | bdrv_get_geometry(bs[0], &bs_sectors); | |
d6771bfa | 769 | buf = qemu_malloc(IO_BUF_SIZE); |
926c2d23 | 770 | |
eec77d9e | 771 | if (compress) { |
c2abccec MK |
772 | ret = bdrv_get_info(out_bs, &bdi); |
773 | if (ret < 0) { | |
15654a6d | 774 | error_report("could not get block driver info"); |
c2abccec MK |
775 | goto out; |
776 | } | |
faea38e7 | 777 | cluster_size = bdi.cluster_size; |
c2abccec | 778 | if (cluster_size <= 0 || cluster_size > IO_BUF_SIZE) { |
15654a6d | 779 | error_report("invalid cluster size"); |
c2abccec MK |
780 | ret = -1; |
781 | goto out; | |
782 | } | |
ea2384d3 FB |
783 | cluster_sectors = cluster_size >> 9; |
784 | sector_num = 0; | |
6b837bc4 JS |
785 | |
786 | nb_sectors = total_sectors; | |
787 | local_progress = (float)100 / | |
788 | (nb_sectors / MIN(nb_sectors, (cluster_sectors))); | |
789 | ||
ea2384d3 | 790 | for(;;) { |
926c2d23 AZ |
791 | int64_t bs_num; |
792 | int remainder; | |
793 | uint8_t *buf2; | |
794 | ||
ea2384d3 FB |
795 | nb_sectors = total_sectors - sector_num; |
796 | if (nb_sectors <= 0) | |
797 | break; | |
798 | if (nb_sectors >= cluster_sectors) | |
799 | n = cluster_sectors; | |
800 | else | |
801 | n = nb_sectors; | |
926c2d23 AZ |
802 | |
803 | bs_num = sector_num - bs_offset; | |
804 | assert (bs_num >= 0); | |
805 | remainder = n; | |
806 | buf2 = buf; | |
807 | while (remainder > 0) { | |
808 | int nlow; | |
809 | while (bs_num == bs_sectors) { | |
810 | bs_i++; | |
811 | assert (bs_i < bs_n); | |
812 | bs_offset += bs_sectors; | |
813 | bdrv_get_geometry(bs[bs_i], &bs_sectors); | |
814 | bs_num = 0; | |
0bfcd599 BS |
815 | /* printf("changing part: sector_num=%" PRId64 ", " |
816 | "bs_i=%d, bs_offset=%" PRId64 ", bs_sectors=%" PRId64 | |
817 | "\n", sector_num, bs_i, bs_offset, bs_sectors); */ | |
926c2d23 AZ |
818 | } |
819 | assert (bs_num < bs_sectors); | |
820 | ||
821 | nlow = (remainder > bs_sectors - bs_num) ? bs_sectors - bs_num : remainder; | |
822 | ||
c2abccec MK |
823 | ret = bdrv_read(bs[bs_i], bs_num, buf2, nlow); |
824 | if (ret < 0) { | |
15654a6d | 825 | error_report("error while reading"); |
c2abccec MK |
826 | goto out; |
827 | } | |
926c2d23 AZ |
828 | |
829 | buf2 += nlow * 512; | |
830 | bs_num += nlow; | |
831 | ||
832 | remainder -= nlow; | |
833 | } | |
834 | assert (remainder == 0); | |
835 | ||
b8fb60da | 836 | if (n < cluster_sectors) { |
ea2384d3 | 837 | memset(buf + n * 512, 0, cluster_size - n * 512); |
b8fb60da | 838 | } |
ea2384d3 | 839 | if (is_not_zero(buf, cluster_size)) { |
c2abccec MK |
840 | ret = bdrv_write_compressed(out_bs, sector_num, buf, |
841 | cluster_sectors); | |
842 | if (ret != 0) { | |
15654a6d | 843 | error_report("error while compressing sector %" PRId64, |
ec3757de | 844 | sector_num); |
c2abccec MK |
845 | goto out; |
846 | } | |
ea2384d3 FB |
847 | } |
848 | sector_num += n; | |
6b837bc4 | 849 | qemu_progress_print(local_progress, 100); |
ea2384d3 | 850 | } |
faea38e7 FB |
851 | /* signal EOF to align */ |
852 | bdrv_write_compressed(out_bs, 0, NULL, 0); | |
ea2384d3 | 853 | } else { |
f2feebbd KW |
854 | int has_zero_init = bdrv_has_zero_init(out_bs); |
855 | ||
f58c7b35 | 856 | sector_num = 0; // total number of sectors converted so far |
6b837bc4 JS |
857 | nb_sectors = total_sectors - sector_num; |
858 | local_progress = (float)100 / | |
859 | (nb_sectors / MIN(nb_sectors, (IO_BUF_SIZE / 512))); | |
860 | ||
ea2384d3 FB |
861 | for(;;) { |
862 | nb_sectors = total_sectors - sector_num; | |
b8fb60da | 863 | if (nb_sectors <= 0) { |
ea2384d3 | 864 | break; |
b8fb60da JS |
865 | } |
866 | if (nb_sectors >= (IO_BUF_SIZE / 512)) { | |
ea2384d3 | 867 | n = (IO_BUF_SIZE / 512); |
b8fb60da | 868 | } else { |
ea2384d3 | 869 | n = nb_sectors; |
b8fb60da | 870 | } |
926c2d23 AZ |
871 | |
872 | while (sector_num - bs_offset >= bs_sectors) { | |
873 | bs_i ++; | |
874 | assert (bs_i < bs_n); | |
875 | bs_offset += bs_sectors; | |
876 | bdrv_get_geometry(bs[bs_i], &bs_sectors); | |
0bfcd599 BS |
877 | /* printf("changing part: sector_num=%" PRId64 ", bs_i=%d, " |
878 | "bs_offset=%" PRId64 ", bs_sectors=%" PRId64 "\n", | |
926c2d23 AZ |
879 | sector_num, bs_i, bs_offset, bs_sectors); */ |
880 | } | |
881 | ||
b8fb60da | 882 | if (n > bs_offset + bs_sectors - sector_num) { |
926c2d23 | 883 | n = bs_offset + bs_sectors - sector_num; |
b8fb60da | 884 | } |
926c2d23 | 885 | |
f2feebbd | 886 | if (has_zero_init) { |
d032044f AS |
887 | /* If the output image is being created as a copy on write image, |
888 | assume that sectors which are unallocated in the input image | |
889 | are present in both the output's and input's base images (no | |
890 | need to copy them). */ | |
891 | if (out_baseimg) { | |
892 | if (!bdrv_is_allocated(bs[bs_i], sector_num - bs_offset, | |
893 | n, &n1)) { | |
894 | sector_num += n1; | |
895 | continue; | |
896 | } | |
897 | /* The next 'n1' sectors are allocated in the input image. Copy | |
898 | only those as they may be followed by unallocated sectors. */ | |
899 | n = n1; | |
93c65b47 | 900 | } |
93c65b47 AL |
901 | } else { |
902 | n1 = n; | |
f58c7b35 TS |
903 | } |
904 | ||
c2abccec MK |
905 | ret = bdrv_read(bs[bs_i], sector_num - bs_offset, buf, n); |
906 | if (ret < 0) { | |
15654a6d | 907 | error_report("error while reading"); |
c2abccec MK |
908 | goto out; |
909 | } | |
ea2384d3 FB |
910 | /* NOTE: at the same time we convert, we do not write zero |
911 | sectors to have a chance to compress the image. Ideally, we | |
912 | should add a specific call to have the info to go faster */ | |
913 | buf1 = buf; | |
914 | while (n > 0) { | |
f58c7b35 TS |
915 | /* If the output image is being created as a copy on write image, |
916 | copy all sectors even the ones containing only NUL bytes, | |
93c65b47 AL |
917 | because they may differ from the sectors in the base image. |
918 | ||
919 | If the output is to a host device, we also write out | |
920 | sectors that are entirely 0, since whatever data was | |
921 | already there is garbage, not 0s. */ | |
f2feebbd | 922 | if (!has_zero_init || out_baseimg || |
93c65b47 | 923 | is_allocated_sectors(buf1, n, &n1)) { |
c2abccec MK |
924 | ret = bdrv_write(out_bs, sector_num, buf1, n1); |
925 | if (ret < 0) { | |
15654a6d | 926 | error_report("error while writing"); |
c2abccec MK |
927 | goto out; |
928 | } | |
ea2384d3 FB |
929 | } |
930 | sector_num += n1; | |
931 | n -= n1; | |
932 | buf1 += n1 * 512; | |
933 | } | |
6b837bc4 | 934 | qemu_progress_print(local_progress, 100); |
ea2384d3 FB |
935 | } |
936 | } | |
c2abccec | 937 | out: |
6b837bc4 | 938 | qemu_progress_end(); |
c2abccec MK |
939 | free_option_parameters(create_options); |
940 | free_option_parameters(param); | |
d6771bfa | 941 | qemu_free(buf); |
c2abccec MK |
942 | if (out_bs) { |
943 | bdrv_delete(out_bs); | |
944 | } | |
31ca34b8 JS |
945 | if (bs) { |
946 | for (bs_i = 0; bs_i < bs_n; bs_i++) { | |
947 | if (bs[bs_i]) { | |
948 | bdrv_delete(bs[bs_i]); | |
949 | } | |
c2abccec | 950 | } |
31ca34b8 | 951 | qemu_free(bs); |
c2abccec | 952 | } |
c2abccec MK |
953 | if (ret) { |
954 | return 1; | |
955 | } | |
ea2384d3 FB |
956 | return 0; |
957 | } | |
958 | ||
57d1a2b6 FB |
959 | #ifdef _WIN32 |
960 | static int64_t get_allocated_file_size(const char *filename) | |
961 | { | |
e8445331 FB |
962 | typedef DWORD (WINAPI * get_compressed_t)(const char *filename, DWORD *high); |
963 | get_compressed_t get_compressed; | |
57d1a2b6 | 964 | struct _stati64 st; |
e8445331 FB |
965 | |
966 | /* WinNT support GetCompressedFileSize to determine allocate size */ | |
967 | get_compressed = (get_compressed_t) GetProcAddress(GetModuleHandle("kernel32"), "GetCompressedFileSizeA"); | |
968 | if (get_compressed) { | |
969 | DWORD high, low; | |
970 | low = get_compressed(filename, &high); | |
971 | if (low != 0xFFFFFFFFlu || GetLastError() == NO_ERROR) | |
972 | return (((int64_t) high) << 32) + low; | |
973 | } | |
974 | ||
5fafdf24 | 975 | if (_stati64(filename, &st) < 0) |
57d1a2b6 FB |
976 | return -1; |
977 | return st.st_size; | |
978 | } | |
979 | #else | |
980 | static int64_t get_allocated_file_size(const char *filename) | |
981 | { | |
982 | struct stat st; | |
5fafdf24 | 983 | if (stat(filename, &st) < 0) |
57d1a2b6 FB |
984 | return -1; |
985 | return (int64_t)st.st_blocks * 512; | |
986 | } | |
987 | #endif | |
988 | ||
faea38e7 FB |
989 | static void dump_snapshots(BlockDriverState *bs) |
990 | { | |
991 | QEMUSnapshotInfo *sn_tab, *sn; | |
992 | int nb_sns, i; | |
993 | char buf[256]; | |
994 | ||
995 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
996 | if (nb_sns <= 0) | |
997 | return; | |
998 | printf("Snapshot list:\n"); | |
999 | printf("%s\n", bdrv_snapshot_dump(buf, sizeof(buf), NULL)); | |
1000 | for(i = 0; i < nb_sns; i++) { | |
1001 | sn = &sn_tab[i]; | |
1002 | printf("%s\n", bdrv_snapshot_dump(buf, sizeof(buf), sn)); | |
1003 | } | |
1004 | qemu_free(sn_tab); | |
1005 | } | |
1006 | ||
ea2384d3 FB |
1007 | static int img_info(int argc, char **argv) |
1008 | { | |
1009 | int c; | |
1010 | const char *filename, *fmt; | |
ea2384d3 FB |
1011 | BlockDriverState *bs; |
1012 | char fmt_name[128], size_buf[128], dsize_buf[128]; | |
96b8f136 TS |
1013 | uint64_t total_sectors; |
1014 | int64_t allocated_size; | |
93b6b2a3 FB |
1015 | char backing_filename[1024]; |
1016 | char backing_filename2[1024]; | |
faea38e7 | 1017 | BlockDriverInfo bdi; |
ea2384d3 FB |
1018 | |
1019 | fmt = NULL; | |
1020 | for(;;) { | |
1021 | c = getopt(argc, argv, "f:h"); | |
b8fb60da | 1022 | if (c == -1) { |
ea2384d3 | 1023 | break; |
b8fb60da | 1024 | } |
ea2384d3 | 1025 | switch(c) { |
ef87394c | 1026 | case '?': |
ea2384d3 FB |
1027 | case 'h': |
1028 | help(); | |
1029 | break; | |
1030 | case 'f': | |
1031 | fmt = optarg; | |
1032 | break; | |
1033 | } | |
1034 | } | |
b8fb60da | 1035 | if (optind >= argc) { |
ea2384d3 | 1036 | help(); |
b8fb60da | 1037 | } |
ea2384d3 FB |
1038 | filename = argv[optind++]; |
1039 | ||
adfe078e | 1040 | bs = bdrv_new_open(filename, fmt, BDRV_O_FLAGS | BDRV_O_NO_BACKING); |
c2abccec MK |
1041 | if (!bs) { |
1042 | return 1; | |
1043 | } | |
ea2384d3 FB |
1044 | bdrv_get_format(bs, fmt_name, sizeof(fmt_name)); |
1045 | bdrv_get_geometry(bs, &total_sectors); | |
1046 | get_human_readable_size(size_buf, sizeof(size_buf), total_sectors * 512); | |
57d1a2b6 | 1047 | allocated_size = get_allocated_file_size(filename); |
b8fb60da | 1048 | if (allocated_size < 0) { |
a10ea30b | 1049 | snprintf(dsize_buf, sizeof(dsize_buf), "unavailable"); |
b8fb60da | 1050 | } else { |
5fafdf24 | 1051 | get_human_readable_size(dsize_buf, sizeof(dsize_buf), |
de167e41 | 1052 | allocated_size); |
b8fb60da | 1053 | } |
ea2384d3 FB |
1054 | printf("image: %s\n" |
1055 | "file format: %s\n" | |
ec3757de | 1056 | "virtual size: %s (%" PRId64 " bytes)\n" |
ea2384d3 | 1057 | "disk size: %s\n", |
5fafdf24 | 1058 | filename, fmt_name, size_buf, |
ec3757de | 1059 | (total_sectors * 512), |
ea2384d3 | 1060 | dsize_buf); |
b8fb60da | 1061 | if (bdrv_is_encrypted(bs)) { |
ea2384d3 | 1062 | printf("encrypted: yes\n"); |
b8fb60da | 1063 | } |
faea38e7 | 1064 | if (bdrv_get_info(bs, &bdi) >= 0) { |
b8fb60da | 1065 | if (bdi.cluster_size != 0) { |
faea38e7 | 1066 | printf("cluster_size: %d\n", bdi.cluster_size); |
b8fb60da | 1067 | } |
faea38e7 | 1068 | } |
93b6b2a3 | 1069 | bdrv_get_backing_filename(bs, backing_filename, sizeof(backing_filename)); |
faea38e7 | 1070 | if (backing_filename[0] != '\0') { |
93b6b2a3 FB |
1071 | path_combine(backing_filename2, sizeof(backing_filename2), |
1072 | filename, backing_filename); | |
5fafdf24 | 1073 | printf("backing file: %s (actual path: %s)\n", |
93b6b2a3 FB |
1074 | backing_filename, |
1075 | backing_filename2); | |
faea38e7 FB |
1076 | } |
1077 | dump_snapshots(bs); | |
ea2384d3 FB |
1078 | bdrv_delete(bs); |
1079 | return 0; | |
1080 | } | |
1081 | ||
f7b4a940 AL |
1082 | #define SNAPSHOT_LIST 1 |
1083 | #define SNAPSHOT_CREATE 2 | |
1084 | #define SNAPSHOT_APPLY 3 | |
1085 | #define SNAPSHOT_DELETE 4 | |
1086 | ||
153859be | 1087 | static int img_snapshot(int argc, char **argv) |
f7b4a940 AL |
1088 | { |
1089 | BlockDriverState *bs; | |
1090 | QEMUSnapshotInfo sn; | |
1091 | char *filename, *snapshot_name = NULL; | |
c2abccec | 1092 | int c, ret = 0, bdrv_oflags; |
f7b4a940 AL |
1093 | int action = 0; |
1094 | qemu_timeval tv; | |
1095 | ||
710da702 | 1096 | bdrv_oflags = BDRV_O_FLAGS | BDRV_O_RDWR; |
f7b4a940 AL |
1097 | /* Parse commandline parameters */ |
1098 | for(;;) { | |
1099 | c = getopt(argc, argv, "la:c:d:h"); | |
b8fb60da | 1100 | if (c == -1) { |
f7b4a940 | 1101 | break; |
b8fb60da | 1102 | } |
f7b4a940 | 1103 | switch(c) { |
ef87394c | 1104 | case '?': |
f7b4a940 AL |
1105 | case 'h': |
1106 | help(); | |
153859be | 1107 | return 0; |
f7b4a940 AL |
1108 | case 'l': |
1109 | if (action) { | |
1110 | help(); | |
153859be | 1111 | return 0; |
f7b4a940 AL |
1112 | } |
1113 | action = SNAPSHOT_LIST; | |
f5edb014 | 1114 | bdrv_oflags &= ~BDRV_O_RDWR; /* no need for RW */ |
f7b4a940 AL |
1115 | break; |
1116 | case 'a': | |
1117 | if (action) { | |
1118 | help(); | |
153859be | 1119 | return 0; |
f7b4a940 AL |
1120 | } |
1121 | action = SNAPSHOT_APPLY; | |
1122 | snapshot_name = optarg; | |
1123 | break; | |
1124 | case 'c': | |
1125 | if (action) { | |
1126 | help(); | |
153859be | 1127 | return 0; |
f7b4a940 AL |
1128 | } |
1129 | action = SNAPSHOT_CREATE; | |
1130 | snapshot_name = optarg; | |
1131 | break; | |
1132 | case 'd': | |
1133 | if (action) { | |
1134 | help(); | |
153859be | 1135 | return 0; |
f7b4a940 AL |
1136 | } |
1137 | action = SNAPSHOT_DELETE; | |
1138 | snapshot_name = optarg; | |
1139 | break; | |
1140 | } | |
1141 | } | |
1142 | ||
b8fb60da | 1143 | if (optind >= argc) { |
f7b4a940 | 1144 | help(); |
b8fb60da | 1145 | } |
f7b4a940 AL |
1146 | filename = argv[optind++]; |
1147 | ||
1148 | /* Open the image */ | |
f163d073 | 1149 | bs = bdrv_new_open(filename, NULL, bdrv_oflags); |
c2abccec MK |
1150 | if (!bs) { |
1151 | return 1; | |
1152 | } | |
f7b4a940 AL |
1153 | |
1154 | /* Perform the requested action */ | |
1155 | switch(action) { | |
1156 | case SNAPSHOT_LIST: | |
1157 | dump_snapshots(bs); | |
1158 | break; | |
1159 | ||
1160 | case SNAPSHOT_CREATE: | |
1161 | memset(&sn, 0, sizeof(sn)); | |
1162 | pstrcpy(sn.name, sizeof(sn.name), snapshot_name); | |
1163 | ||
1164 | qemu_gettimeofday(&tv); | |
1165 | sn.date_sec = tv.tv_sec; | |
1166 | sn.date_nsec = tv.tv_usec * 1000; | |
1167 | ||
1168 | ret = bdrv_snapshot_create(bs, &sn); | |
b8fb60da | 1169 | if (ret) { |
15654a6d | 1170 | error_report("Could not create snapshot '%s': %d (%s)", |
f7b4a940 | 1171 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 1172 | } |
f7b4a940 AL |
1173 | break; |
1174 | ||
1175 | case SNAPSHOT_APPLY: | |
1176 | ret = bdrv_snapshot_goto(bs, snapshot_name); | |
b8fb60da | 1177 | if (ret) { |
15654a6d | 1178 | error_report("Could not apply snapshot '%s': %d (%s)", |
f7b4a940 | 1179 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 1180 | } |
f7b4a940 AL |
1181 | break; |
1182 | ||
1183 | case SNAPSHOT_DELETE: | |
1184 | ret = bdrv_snapshot_delete(bs, snapshot_name); | |
b8fb60da | 1185 | if (ret) { |
15654a6d | 1186 | error_report("Could not delete snapshot '%s': %d (%s)", |
f7b4a940 | 1187 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 1188 | } |
f7b4a940 AL |
1189 | break; |
1190 | } | |
1191 | ||
1192 | /* Cleanup */ | |
1193 | bdrv_delete(bs); | |
c2abccec MK |
1194 | if (ret) { |
1195 | return 1; | |
1196 | } | |
153859be | 1197 | return 0; |
f7b4a940 AL |
1198 | } |
1199 | ||
3e85c6fd KW |
1200 | static int img_rebase(int argc, char **argv) |
1201 | { | |
c2abccec | 1202 | BlockDriverState *bs, *bs_old_backing = NULL, *bs_new_backing = NULL; |
f163d073 | 1203 | BlockDriver *old_backing_drv, *new_backing_drv; |
3e85c6fd | 1204 | char *filename; |
e53dbee0 | 1205 | const char *fmt, *out_basefmt, *out_baseimg; |
3e85c6fd KW |
1206 | int c, flags, ret; |
1207 | int unsafe = 0; | |
6b837bc4 | 1208 | int progress = 0; |
3e85c6fd KW |
1209 | |
1210 | /* Parse commandline parameters */ | |
e53dbee0 | 1211 | fmt = NULL; |
3e85c6fd KW |
1212 | out_baseimg = NULL; |
1213 | out_basefmt = NULL; | |
1214 | ||
1215 | for(;;) { | |
6b837bc4 | 1216 | c = getopt(argc, argv, "uhf:F:b:p"); |
b8fb60da | 1217 | if (c == -1) { |
3e85c6fd | 1218 | break; |
b8fb60da | 1219 | } |
3e85c6fd | 1220 | switch(c) { |
ef87394c | 1221 | case '?': |
3e85c6fd KW |
1222 | case 'h': |
1223 | help(); | |
1224 | return 0; | |
e53dbee0 KW |
1225 | case 'f': |
1226 | fmt = optarg; | |
1227 | break; | |
3e85c6fd KW |
1228 | case 'F': |
1229 | out_basefmt = optarg; | |
1230 | break; | |
1231 | case 'b': | |
1232 | out_baseimg = optarg; | |
1233 | break; | |
1234 | case 'u': | |
1235 | unsafe = 1; | |
1236 | break; | |
6b837bc4 JS |
1237 | case 'p': |
1238 | progress = 1; | |
1239 | break; | |
3e85c6fd KW |
1240 | } |
1241 | } | |
1242 | ||
b8fb60da | 1243 | if ((optind >= argc) || !out_baseimg) { |
3e85c6fd | 1244 | help(); |
b8fb60da | 1245 | } |
3e85c6fd KW |
1246 | filename = argv[optind++]; |
1247 | ||
6b837bc4 JS |
1248 | qemu_progress_init(progress, 2.0); |
1249 | qemu_progress_print(0, 100); | |
1250 | ||
3e85c6fd KW |
1251 | /* |
1252 | * Open the images. | |
1253 | * | |
1254 | * Ignore the old backing file for unsafe rebase in case we want to correct | |
1255 | * the reference to a renamed or moved backing file. | |
1256 | */ | |
adfe078e | 1257 | flags = BDRV_O_FLAGS | BDRV_O_RDWR | (unsafe ? BDRV_O_NO_BACKING : 0); |
f163d073 | 1258 | bs = bdrv_new_open(filename, fmt, flags); |
c2abccec MK |
1259 | if (!bs) { |
1260 | return 1; | |
1261 | } | |
3e85c6fd KW |
1262 | |
1263 | /* Find the right drivers for the backing files */ | |
1264 | old_backing_drv = NULL; | |
1265 | new_backing_drv = NULL; | |
1266 | ||
1267 | if (!unsafe && bs->backing_format[0] != '\0') { | |
1268 | old_backing_drv = bdrv_find_format(bs->backing_format); | |
1269 | if (old_backing_drv == NULL) { | |
15654a6d | 1270 | error_report("Invalid format name: '%s'", bs->backing_format); |
c2abccec MK |
1271 | ret = -1; |
1272 | goto out; | |
3e85c6fd KW |
1273 | } |
1274 | } | |
1275 | ||
1276 | if (out_basefmt != NULL) { | |
1277 | new_backing_drv = bdrv_find_format(out_basefmt); | |
1278 | if (new_backing_drv == NULL) { | |
15654a6d | 1279 | error_report("Invalid format name: '%s'", out_basefmt); |
c2abccec MK |
1280 | ret = -1; |
1281 | goto out; | |
3e85c6fd KW |
1282 | } |
1283 | } | |
1284 | ||
1285 | /* For safe rebasing we need to compare old and new backing file */ | |
1286 | if (unsafe) { | |
1287 | /* Make the compiler happy */ | |
1288 | bs_old_backing = NULL; | |
1289 | bs_new_backing = NULL; | |
1290 | } else { | |
1291 | char backing_name[1024]; | |
1292 | ||
1293 | bs_old_backing = bdrv_new("old_backing"); | |
1294 | bdrv_get_backing_filename(bs, backing_name, sizeof(backing_name)); | |
c2abccec MK |
1295 | ret = bdrv_open(bs_old_backing, backing_name, BDRV_O_FLAGS, |
1296 | old_backing_drv); | |
1297 | if (ret) { | |
15654a6d | 1298 | error_report("Could not open old backing file '%s'", backing_name); |
c2abccec | 1299 | goto out; |
3e85c6fd KW |
1300 | } |
1301 | ||
1302 | bs_new_backing = bdrv_new("new_backing"); | |
cdbae851 | 1303 | ret = bdrv_open(bs_new_backing, out_baseimg, BDRV_O_FLAGS, |
c2abccec MK |
1304 | new_backing_drv); |
1305 | if (ret) { | |
15654a6d | 1306 | error_report("Could not open new backing file '%s'", out_baseimg); |
c2abccec | 1307 | goto out; |
3e85c6fd KW |
1308 | } |
1309 | } | |
1310 | ||
1311 | /* | |
1312 | * Check each unallocated cluster in the COW file. If it is unallocated, | |
1313 | * accesses go to the backing file. We must therefore compare this cluster | |
1314 | * in the old and new backing file, and if they differ we need to copy it | |
1315 | * from the old backing file into the COW file. | |
1316 | * | |
1317 | * If qemu-img crashes during this step, no harm is done. The content of | |
1318 | * the image is the same as the original one at any time. | |
1319 | */ | |
1320 | if (!unsafe) { | |
1321 | uint64_t num_sectors; | |
1322 | uint64_t sector; | |
cc60e327 | 1323 | int n; |
d6771bfa T |
1324 | uint8_t * buf_old; |
1325 | uint8_t * buf_new; | |
6b837bc4 | 1326 | float local_progress; |
d6771bfa T |
1327 | |
1328 | buf_old = qemu_malloc(IO_BUF_SIZE); | |
1329 | buf_new = qemu_malloc(IO_BUF_SIZE); | |
3e85c6fd KW |
1330 | |
1331 | bdrv_get_geometry(bs, &num_sectors); | |
1332 | ||
6b837bc4 JS |
1333 | local_progress = (float)100 / |
1334 | (num_sectors / MIN(num_sectors, (IO_BUF_SIZE / 512))); | |
3e85c6fd KW |
1335 | for (sector = 0; sector < num_sectors; sector += n) { |
1336 | ||
1337 | /* How many sectors can we handle with the next read? */ | |
1338 | if (sector + (IO_BUF_SIZE / 512) <= num_sectors) { | |
1339 | n = (IO_BUF_SIZE / 512); | |
1340 | } else { | |
1341 | n = num_sectors - sector; | |
1342 | } | |
1343 | ||
1344 | /* If the cluster is allocated, we don't need to take action */ | |
cc60e327 KW |
1345 | ret = bdrv_is_allocated(bs, sector, n, &n); |
1346 | if (ret) { | |
3e85c6fd KW |
1347 | continue; |
1348 | } | |
1349 | ||
1350 | /* Read old and new backing file */ | |
c2abccec MK |
1351 | ret = bdrv_read(bs_old_backing, sector, buf_old, n); |
1352 | if (ret < 0) { | |
15654a6d | 1353 | error_report("error while reading from old backing file"); |
c2abccec | 1354 | goto out; |
3e85c6fd | 1355 | } |
c2abccec MK |
1356 | ret = bdrv_read(bs_new_backing, sector, buf_new, n); |
1357 | if (ret < 0) { | |
15654a6d | 1358 | error_report("error while reading from new backing file"); |
c2abccec | 1359 | goto out; |
3e85c6fd KW |
1360 | } |
1361 | ||
1362 | /* If they differ, we need to write to the COW file */ | |
1363 | uint64_t written = 0; | |
1364 | ||
1365 | while (written < n) { | |
1366 | int pnum; | |
1367 | ||
1368 | if (compare_sectors(buf_old + written * 512, | |
60b1bd4f | 1369 | buf_new + written * 512, n - written, &pnum)) |
3e85c6fd KW |
1370 | { |
1371 | ret = bdrv_write(bs, sector + written, | |
1372 | buf_old + written * 512, pnum); | |
1373 | if (ret < 0) { | |
15654a6d | 1374 | error_report("Error while writing to COW image: %s", |
3e85c6fd | 1375 | strerror(-ret)); |
c2abccec | 1376 | goto out; |
3e85c6fd KW |
1377 | } |
1378 | } | |
1379 | ||
1380 | written += pnum; | |
1381 | } | |
6b837bc4 | 1382 | qemu_progress_print(local_progress, 100); |
3e85c6fd | 1383 | } |
d6771bfa T |
1384 | |
1385 | qemu_free(buf_old); | |
1386 | qemu_free(buf_new); | |
3e85c6fd KW |
1387 | } |
1388 | ||
1389 | /* | |
1390 | * Change the backing file. All clusters that are different from the old | |
1391 | * backing file are overwritten in the COW file now, so the visible content | |
1392 | * doesn't change when we switch the backing file. | |
1393 | */ | |
1394 | ret = bdrv_change_backing_file(bs, out_baseimg, out_basefmt); | |
1395 | if (ret == -ENOSPC) { | |
15654a6d JS |
1396 | error_report("Could not change the backing file to '%s': No " |
1397 | "space left in the file header", out_baseimg); | |
3e85c6fd | 1398 | } else if (ret < 0) { |
15654a6d | 1399 | error_report("Could not change the backing file to '%s': %s", |
3e85c6fd KW |
1400 | out_baseimg, strerror(-ret)); |
1401 | } | |
1402 | ||
6b837bc4 | 1403 | qemu_progress_print(100, 0); |
3e85c6fd KW |
1404 | /* |
1405 | * TODO At this point it is possible to check if any clusters that are | |
1406 | * allocated in the COW file are the same in the backing file. If so, they | |
1407 | * could be dropped from the COW file. Don't do this before switching the | |
1408 | * backing file, in case of a crash this would lead to corruption. | |
1409 | */ | |
c2abccec | 1410 | out: |
6b837bc4 | 1411 | qemu_progress_end(); |
3e85c6fd KW |
1412 | /* Cleanup */ |
1413 | if (!unsafe) { | |
eb863add KW |
1414 | if (bs_old_backing != NULL) { |
1415 | bdrv_delete(bs_old_backing); | |
1416 | } | |
1417 | if (bs_new_backing != NULL) { | |
1418 | bdrv_delete(bs_new_backing); | |
1419 | } | |
3e85c6fd KW |
1420 | } |
1421 | ||
1422 | bdrv_delete(bs); | |
c2abccec MK |
1423 | if (ret) { |
1424 | return 1; | |
1425 | } | |
3e85c6fd KW |
1426 | return 0; |
1427 | } | |
1428 | ||
ae6b0ed6 SH |
1429 | static int img_resize(int argc, char **argv) |
1430 | { | |
1431 | int c, ret, relative; | |
1432 | const char *filename, *fmt, *size; | |
1433 | int64_t n, total_size; | |
2a81998a | 1434 | BlockDriverState *bs = NULL; |
ae6b0ed6 SH |
1435 | QEMUOptionParameter *param; |
1436 | QEMUOptionParameter resize_options[] = { | |
1437 | { | |
1438 | .name = BLOCK_OPT_SIZE, | |
1439 | .type = OPT_SIZE, | |
1440 | .help = "Virtual disk size" | |
1441 | }, | |
1442 | { NULL } | |
1443 | }; | |
1444 | ||
1445 | fmt = NULL; | |
1446 | for(;;) { | |
1447 | c = getopt(argc, argv, "f:h"); | |
1448 | if (c == -1) { | |
1449 | break; | |
1450 | } | |
1451 | switch(c) { | |
ef87394c | 1452 | case '?': |
ae6b0ed6 SH |
1453 | case 'h': |
1454 | help(); | |
1455 | break; | |
1456 | case 'f': | |
1457 | fmt = optarg; | |
1458 | break; | |
1459 | } | |
1460 | } | |
1461 | if (optind + 1 >= argc) { | |
1462 | help(); | |
1463 | } | |
1464 | filename = argv[optind++]; | |
1465 | size = argv[optind++]; | |
1466 | ||
1467 | /* Choose grow, shrink, or absolute resize mode */ | |
1468 | switch (size[0]) { | |
1469 | case '+': | |
1470 | relative = 1; | |
1471 | size++; | |
1472 | break; | |
1473 | case '-': | |
1474 | relative = -1; | |
1475 | size++; | |
1476 | break; | |
1477 | default: | |
1478 | relative = 0; | |
1479 | break; | |
1480 | } | |
1481 | ||
1482 | /* Parse size */ | |
1483 | param = parse_option_parameters("", resize_options, NULL); | |
1484 | if (set_option_parameter(param, BLOCK_OPT_SIZE, size)) { | |
1485 | /* Error message already printed when size parsing fails */ | |
2a81998a JS |
1486 | ret = -1; |
1487 | goto out; | |
ae6b0ed6 SH |
1488 | } |
1489 | n = get_option_parameter(param, BLOCK_OPT_SIZE)->value.n; | |
1490 | free_option_parameters(param); | |
1491 | ||
1492 | bs = bdrv_new_open(filename, fmt, BDRV_O_FLAGS | BDRV_O_RDWR); | |
c2abccec | 1493 | if (!bs) { |
2a81998a JS |
1494 | ret = -1; |
1495 | goto out; | |
c2abccec | 1496 | } |
ae6b0ed6 SH |
1497 | |
1498 | if (relative) { | |
1499 | total_size = bdrv_getlength(bs) + n * relative; | |
1500 | } else { | |
1501 | total_size = n; | |
1502 | } | |
1503 | if (total_size <= 0) { | |
15654a6d | 1504 | error_report("New image size must be positive"); |
c2abccec MK |
1505 | ret = -1; |
1506 | goto out; | |
ae6b0ed6 SH |
1507 | } |
1508 | ||
1509 | ret = bdrv_truncate(bs, total_size); | |
1510 | switch (ret) { | |
1511 | case 0: | |
1512 | printf("Image resized.\n"); | |
1513 | break; | |
1514 | case -ENOTSUP: | |
15654a6d | 1515 | error_report("This image format does not support resize"); |
ae6b0ed6 SH |
1516 | break; |
1517 | case -EACCES: | |
15654a6d | 1518 | error_report("Image is read-only"); |
ae6b0ed6 SH |
1519 | break; |
1520 | default: | |
15654a6d | 1521 | error_report("Error resizing image (%d)", -ret); |
ae6b0ed6 SH |
1522 | break; |
1523 | } | |
c2abccec | 1524 | out: |
2a81998a JS |
1525 | if (bs) { |
1526 | bdrv_delete(bs); | |
1527 | } | |
c2abccec MK |
1528 | if (ret) { |
1529 | return 1; | |
1530 | } | |
ae6b0ed6 SH |
1531 | return 0; |
1532 | } | |
1533 | ||
c227f099 | 1534 | static const img_cmd_t img_cmds[] = { |
153859be SB |
1535 | #define DEF(option, callback, arg_string) \ |
1536 | { option, callback }, | |
1537 | #include "qemu-img-cmds.h" | |
1538 | #undef DEF | |
1539 | #undef GEN_DOCS | |
1540 | { NULL, NULL, }, | |
1541 | }; | |
1542 | ||
ea2384d3 FB |
1543 | int main(int argc, char **argv) |
1544 | { | |
c227f099 | 1545 | const img_cmd_t *cmd; |
153859be | 1546 | const char *cmdname; |
ea2384d3 | 1547 | |
53f76e58 KW |
1548 | error_set_progname(argv[0]); |
1549 | ||
ea2384d3 FB |
1550 | bdrv_init(); |
1551 | if (argc < 2) | |
1552 | help(); | |
153859be | 1553 | cmdname = argv[1]; |
8f9b157e | 1554 | argc--; argv++; |
153859be SB |
1555 | |
1556 | /* find the command */ | |
1557 | for(cmd = img_cmds; cmd->name != NULL; cmd++) { | |
1558 | if (!strcmp(cmdname, cmd->name)) { | |
1559 | return cmd->handler(argc, argv); | |
1560 | } | |
ea2384d3 | 1561 | } |
153859be SB |
1562 | |
1563 | /* not found */ | |
1564 | help(); | |
ea2384d3 FB |
1565 | return 0; |
1566 | } |