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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" |
80ccf93b LY |
69 | " options are: 'none', 'writeback' (default, except for convert), 'writethrough',\n" |
70 | " 'directsync' and 'unsafe' (default for convert)\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" |
4534ff54 KW |
88 | "Parameters to check subcommand:\n" |
89 | " '-r' tries to repair any inconsistencies that are found during the check.\n" | |
90 | " '-r leaks' repairs only cluster leaks, whereas '-r all' fixes all\n" | |
91 | " kinds of errors, with a higher risk of choosing the wrong fix or\n" | |
92 | " hiding corruption that has already occured.\n" | |
93 | "\n" | |
3f020d70 | 94 | "Parameters to snapshot subcommand:\n" |
95 | " 'snapshot' is the name of the snapshot to create, apply or delete\n" | |
96 | " '-a' applies a snapshot (revert disk to saved state)\n" | |
97 | " '-c' creates a snapshot\n" | |
98 | " '-d' deletes a snapshot\n" | |
e00291c0 PB |
99 | " '-l' lists all snapshots in the given image\n"; |
100 | ||
101 | printf("%s\nSupported formats:", help_msg); | |
ea2384d3 FB |
102 | bdrv_iterate_format(format_print, NULL); |
103 | printf("\n"); | |
104 | exit(1); | |
105 | } | |
106 | ||
ea2384d3 FB |
107 | #if defined(WIN32) |
108 | /* XXX: put correct support for win32 */ | |
109 | static int read_password(char *buf, int buf_size) | |
110 | { | |
111 | int c, i; | |
112 | printf("Password: "); | |
113 | fflush(stdout); | |
114 | i = 0; | |
115 | for(;;) { | |
116 | c = getchar(); | |
117 | if (c == '\n') | |
118 | break; | |
119 | if (i < (buf_size - 1)) | |
120 | buf[i++] = c; | |
121 | } | |
122 | buf[i] = '\0'; | |
123 | return 0; | |
124 | } | |
125 | ||
126 | #else | |
127 | ||
128 | #include <termios.h> | |
129 | ||
130 | static struct termios oldtty; | |
131 | ||
132 | static void term_exit(void) | |
133 | { | |
134 | tcsetattr (0, TCSANOW, &oldtty); | |
135 | } | |
136 | ||
137 | static void term_init(void) | |
138 | { | |
139 | struct termios tty; | |
140 | ||
141 | tcgetattr (0, &tty); | |
142 | oldtty = tty; | |
143 | ||
144 | tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP | |
145 | |INLCR|IGNCR|ICRNL|IXON); | |
146 | tty.c_oflag |= OPOST; | |
147 | tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN); | |
148 | tty.c_cflag &= ~(CSIZE|PARENB); | |
149 | tty.c_cflag |= CS8; | |
150 | tty.c_cc[VMIN] = 1; | |
151 | tty.c_cc[VTIME] = 0; | |
3b46e624 | 152 | |
ea2384d3 FB |
153 | tcsetattr (0, TCSANOW, &tty); |
154 | ||
155 | atexit(term_exit); | |
156 | } | |
157 | ||
3f379ab1 | 158 | static int read_password(char *buf, int buf_size) |
ea2384d3 FB |
159 | { |
160 | uint8_t ch; | |
161 | int i, ret; | |
162 | ||
163 | printf("password: "); | |
164 | fflush(stdout); | |
165 | term_init(); | |
166 | i = 0; | |
167 | for(;;) { | |
168 | ret = read(0, &ch, 1); | |
169 | if (ret == -1) { | |
170 | if (errno == EAGAIN || errno == EINTR) { | |
171 | continue; | |
172 | } else { | |
173 | ret = -1; | |
174 | break; | |
175 | } | |
176 | } else if (ret == 0) { | |
177 | ret = -1; | |
178 | break; | |
179 | } else { | |
180 | if (ch == '\r') { | |
181 | ret = 0; | |
182 | break; | |
183 | } | |
184 | if (i < (buf_size - 1)) | |
185 | buf[i++] = ch; | |
186 | } | |
187 | } | |
188 | term_exit(); | |
189 | buf[i] = '\0'; | |
190 | printf("\n"); | |
191 | return ret; | |
192 | } | |
193 | #endif | |
194 | ||
4ac8aacd JS |
195 | static int print_block_option_help(const char *filename, const char *fmt) |
196 | { | |
197 | BlockDriver *drv, *proto_drv; | |
198 | QEMUOptionParameter *create_options = NULL; | |
199 | ||
200 | /* Find driver and parse its options */ | |
201 | drv = bdrv_find_format(fmt); | |
202 | if (!drv) { | |
15654a6d | 203 | error_report("Unknown file format '%s'", fmt); |
4ac8aacd JS |
204 | return 1; |
205 | } | |
206 | ||
207 | proto_drv = bdrv_find_protocol(filename); | |
208 | if (!proto_drv) { | |
15654a6d | 209 | error_report("Unknown protocol '%s'", filename); |
4ac8aacd JS |
210 | return 1; |
211 | } | |
212 | ||
213 | create_options = append_option_parameters(create_options, | |
214 | drv->create_options); | |
215 | create_options = append_option_parameters(create_options, | |
216 | proto_drv->create_options); | |
217 | print_option_help(create_options); | |
218 | free_option_parameters(create_options); | |
219 | return 0; | |
220 | } | |
221 | ||
75c23805 | 222 | static BlockDriverState *bdrv_new_open(const char *filename, |
9bc378c1 | 223 | const char *fmt, |
f9f552e8 DB |
224 | int flags, |
225 | bool require_io) | |
75c23805 FB |
226 | { |
227 | BlockDriverState *bs; | |
228 | BlockDriver *drv; | |
229 | char password[256]; | |
b9eaf9ec | 230 | int ret; |
75c23805 | 231 | |
b9eaf9ec | 232 | bs = bdrv_new("image"); |
ad717139 | 233 | |
75c23805 FB |
234 | if (fmt) { |
235 | drv = bdrv_find_format(fmt); | |
c2abccec | 236 | if (!drv) { |
15654a6d | 237 | error_report("Unknown file format '%s'", fmt); |
c2abccec MK |
238 | goto fail; |
239 | } | |
75c23805 FB |
240 | } else { |
241 | drv = NULL; | |
242 | } | |
b9eaf9ec KW |
243 | |
244 | ret = bdrv_open(bs, filename, flags, drv); | |
245 | if (ret < 0) { | |
246 | error_report("Could not open '%s': %s", filename, strerror(-ret)); | |
c2abccec | 247 | goto fail; |
75c23805 | 248 | } |
b9eaf9ec | 249 | |
f9f552e8 | 250 | if (bdrv_is_encrypted(bs) && require_io) { |
75c23805 | 251 | printf("Disk image '%s' is encrypted.\n", filename); |
c2abccec | 252 | if (read_password(password, sizeof(password)) < 0) { |
15654a6d | 253 | error_report("No password given"); |
c2abccec MK |
254 | goto fail; |
255 | } | |
256 | if (bdrv_set_key(bs, password) < 0) { | |
15654a6d | 257 | error_report("invalid password"); |
c2abccec MK |
258 | goto fail; |
259 | } | |
75c23805 FB |
260 | } |
261 | return bs; | |
c2abccec MK |
262 | fail: |
263 | if (bs) { | |
264 | bdrv_delete(bs); | |
265 | } | |
266 | return NULL; | |
75c23805 FB |
267 | } |
268 | ||
c2abccec | 269 | static int add_old_style_options(const char *fmt, QEMUOptionParameter *list, |
eec77d9e JS |
270 | const char *base_filename, |
271 | const char *base_fmt) | |
efa84d43 | 272 | { |
efa84d43 KW |
273 | if (base_filename) { |
274 | if (set_option_parameter(list, BLOCK_OPT_BACKING_FILE, base_filename)) { | |
15654a6d JS |
275 | error_report("Backing file not supported for file format '%s'", |
276 | fmt); | |
c2abccec | 277 | return -1; |
efa84d43 KW |
278 | } |
279 | } | |
280 | if (base_fmt) { | |
281 | if (set_option_parameter(list, BLOCK_OPT_BACKING_FMT, base_fmt)) { | |
15654a6d JS |
282 | error_report("Backing file format not supported for file " |
283 | "format '%s'", fmt); | |
c2abccec | 284 | return -1; |
efa84d43 KW |
285 | } |
286 | } | |
c2abccec | 287 | return 0; |
efa84d43 KW |
288 | } |
289 | ||
ea2384d3 FB |
290 | static int img_create(int argc, char **argv) |
291 | { | |
eec77d9e | 292 | int c, ret = 0; |
1da7cfbd | 293 | uint64_t img_size = -1; |
ea2384d3 | 294 | const char *fmt = "raw"; |
9230eaf6 | 295 | const char *base_fmt = NULL; |
ea2384d3 FB |
296 | const char *filename; |
297 | const char *base_filename = NULL; | |
9ea2ea71 | 298 | char *options = NULL; |
3b46e624 | 299 | |
ea2384d3 | 300 | for(;;) { |
9ea2ea71 | 301 | c = getopt(argc, argv, "F:b:f:he6o:"); |
b8fb60da | 302 | if (c == -1) { |
ea2384d3 | 303 | break; |
b8fb60da | 304 | } |
ea2384d3 | 305 | switch(c) { |
ef87394c | 306 | case '?': |
ea2384d3 FB |
307 | case 'h': |
308 | help(); | |
309 | break; | |
9230eaf6 AL |
310 | case 'F': |
311 | base_fmt = optarg; | |
312 | break; | |
ea2384d3 FB |
313 | case 'b': |
314 | base_filename = optarg; | |
315 | break; | |
316 | case 'f': | |
317 | fmt = optarg; | |
318 | break; | |
319 | case 'e': | |
9d42e15d | 320 | error_report("option -e is deprecated, please use \'-o " |
eec77d9e JS |
321 | "encryption\' instead!"); |
322 | return 1; | |
d8871c5a | 323 | case '6': |
9d42e15d | 324 | error_report("option -6 is deprecated, please use \'-o " |
eec77d9e JS |
325 | "compat6\' instead!"); |
326 | return 1; | |
9ea2ea71 KW |
327 | case 'o': |
328 | options = optarg; | |
329 | break; | |
ea2384d3 FB |
330 | } |
331 | } | |
9230eaf6 | 332 | |
b50cbabc | 333 | /* Get the filename */ |
b8fb60da | 334 | if (optind >= argc) { |
b50cbabc | 335 | help(); |
b8fb60da | 336 | } |
b50cbabc MK |
337 | filename = argv[optind++]; |
338 | ||
1da7cfbd JS |
339 | /* Get image size, if specified */ |
340 | if (optind < argc) { | |
70b4f4bb | 341 | int64_t sval; |
e36b3695 MA |
342 | char *end; |
343 | sval = strtosz_suffix(argv[optind++], &end, STRTOSZ_DEFSUFFIX_B); | |
344 | if (sval < 0 || *end) { | |
15654a6d | 345 | error_report("Invalid image size specified! You may use k, M, G or " |
1da7cfbd | 346 | "T suffixes for "); |
15654a6d | 347 | error_report("kilobytes, megabytes, gigabytes and terabytes."); |
1da7cfbd JS |
348 | ret = -1; |
349 | goto out; | |
350 | } | |
351 | img_size = (uint64_t)sval; | |
352 | } | |
353 | ||
c8057f95 | 354 | if (options && is_help_option(options)) { |
4ac8aacd JS |
355 | ret = print_block_option_help(filename, fmt); |
356 | goto out; | |
357 | } | |
358 | ||
f88e1a42 JS |
359 | ret = bdrv_img_create(filename, fmt, base_filename, base_fmt, |
360 | options, img_size, BDRV_O_FLAGS); | |
c2abccec MK |
361 | out: |
362 | if (ret) { | |
363 | return 1; | |
364 | } | |
ea2384d3 FB |
365 | return 0; |
366 | } | |
367 | ||
e076f338 KW |
368 | /* |
369 | * Checks an image for consistency. Exit codes: | |
370 | * | |
371 | * 0 - Check completed, image is good | |
372 | * 1 - Check not completed because of internal errors | |
373 | * 2 - Check completed, image is corrupted | |
374 | * 3 - Check completed, image has leaked clusters, but is good otherwise | |
375 | */ | |
1585969c AL |
376 | static int img_check(int argc, char **argv) |
377 | { | |
378 | int c, ret; | |
379 | const char *filename, *fmt; | |
1585969c | 380 | BlockDriverState *bs; |
e076f338 | 381 | BdrvCheckResult result; |
4534ff54 | 382 | int fix = 0; |
058f8f16 | 383 | int flags = BDRV_O_FLAGS | BDRV_O_CHECK; |
1585969c AL |
384 | |
385 | fmt = NULL; | |
386 | for(;;) { | |
4534ff54 | 387 | c = getopt(argc, argv, "f:hr:"); |
b8fb60da | 388 | if (c == -1) { |
1585969c | 389 | break; |
b8fb60da | 390 | } |
1585969c | 391 | switch(c) { |
ef87394c | 392 | case '?': |
1585969c AL |
393 | case 'h': |
394 | help(); | |
395 | break; | |
396 | case 'f': | |
397 | fmt = optarg; | |
398 | break; | |
4534ff54 KW |
399 | case 'r': |
400 | flags |= BDRV_O_RDWR; | |
401 | ||
402 | if (!strcmp(optarg, "leaks")) { | |
403 | fix = BDRV_FIX_LEAKS; | |
404 | } else if (!strcmp(optarg, "all")) { | |
405 | fix = BDRV_FIX_LEAKS | BDRV_FIX_ERRORS; | |
406 | } else { | |
407 | help(); | |
408 | } | |
409 | break; | |
1585969c AL |
410 | } |
411 | } | |
b8fb60da | 412 | if (optind >= argc) { |
1585969c | 413 | help(); |
b8fb60da | 414 | } |
1585969c AL |
415 | filename = argv[optind++]; |
416 | ||
f9f552e8 | 417 | bs = bdrv_new_open(filename, fmt, flags, true); |
c2abccec MK |
418 | if (!bs) { |
419 | return 1; | |
420 | } | |
4534ff54 | 421 | ret = bdrv_check(bs, &result, fix); |
e076f338 KW |
422 | |
423 | if (ret == -ENOTSUP) { | |
15654a6d | 424 | error_report("This image format does not support checks"); |
e076f338 KW |
425 | bdrv_delete(bs); |
426 | return 1; | |
427 | } | |
428 | ||
ccf34716 KW |
429 | if (result.corruptions_fixed || result.leaks_fixed) { |
430 | printf("The following inconsistencies were found and repaired:\n\n" | |
431 | " %d leaked clusters\n" | |
432 | " %d corruptions\n\n" | |
433 | "Double checking the fixed image now...\n", | |
434 | result.leaks_fixed, | |
435 | result.corruptions_fixed); | |
436 | ret = bdrv_check(bs, &result, 0); | |
437 | } | |
438 | ||
e076f338 KW |
439 | if (!(result.corruptions || result.leaks || result.check_errors)) { |
440 | printf("No errors were found on the image.\n"); | |
441 | } else { | |
442 | if (result.corruptions) { | |
443 | printf("\n%d errors were found on the image.\n" | |
444 | "Data may be corrupted, or further writes to the image " | |
445 | "may corrupt it.\n", | |
446 | result.corruptions); | |
447 | } | |
448 | ||
449 | if (result.leaks) { | |
450 | printf("\n%d leaked clusters were found on the image.\n" | |
451 | "This means waste of disk space, but no harm to data.\n", | |
452 | result.leaks); | |
453 | } | |
454 | ||
455 | if (result.check_errors) { | |
456 | printf("\n%d internal errors have occurred during the check.\n", | |
457 | result.check_errors); | |
1585969c | 458 | } |
1585969c AL |
459 | } |
460 | ||
f8111c24 DXW |
461 | if (result.bfi.total_clusters != 0 && result.bfi.allocated_clusters != 0) { |
462 | printf("%" PRId64 "/%" PRId64 "= %0.2f%% allocated, %0.2f%% fragmented\n", | |
463 | result.bfi.allocated_clusters, result.bfi.total_clusters, | |
464 | result.bfi.allocated_clusters * 100.0 / result.bfi.total_clusters, | |
465 | result.bfi.fragmented_clusters * 100.0 / result.bfi.allocated_clusters); | |
466 | } | |
467 | ||
1585969c | 468 | bdrv_delete(bs); |
e076f338 KW |
469 | |
470 | if (ret < 0 || result.check_errors) { | |
471 | printf("\nAn error has occurred during the check: %s\n" | |
472 | "The check is not complete and may have missed error.\n", | |
473 | strerror(-ret)); | |
c2abccec MK |
474 | return 1; |
475 | } | |
e076f338 KW |
476 | |
477 | if (result.corruptions) { | |
478 | return 2; | |
479 | } else if (result.leaks) { | |
480 | return 3; | |
481 | } else { | |
482 | return 0; | |
483 | } | |
1585969c AL |
484 | } |
485 | ||
ea2384d3 FB |
486 | static int img_commit(int argc, char **argv) |
487 | { | |
661a0f71 FS |
488 | int c, ret, flags; |
489 | const char *filename, *fmt, *cache; | |
ea2384d3 FB |
490 | BlockDriverState *bs; |
491 | ||
492 | fmt = NULL; | |
661a0f71 | 493 | cache = BDRV_DEFAULT_CACHE; |
ea2384d3 | 494 | for(;;) { |
661a0f71 | 495 | c = getopt(argc, argv, "f:ht:"); |
b8fb60da | 496 | if (c == -1) { |
ea2384d3 | 497 | break; |
b8fb60da | 498 | } |
ea2384d3 | 499 | switch(c) { |
ef87394c | 500 | case '?': |
ea2384d3 FB |
501 | case 'h': |
502 | help(); | |
503 | break; | |
504 | case 'f': | |
505 | fmt = optarg; | |
506 | break; | |
661a0f71 FS |
507 | case 't': |
508 | cache = optarg; | |
509 | break; | |
ea2384d3 FB |
510 | } |
511 | } | |
b8fb60da | 512 | if (optind >= argc) { |
ea2384d3 | 513 | help(); |
b8fb60da | 514 | } |
ea2384d3 FB |
515 | filename = argv[optind++]; |
516 | ||
661a0f71 | 517 | flags = BDRV_O_RDWR; |
c3993cdc | 518 | ret = bdrv_parse_cache_flags(cache, &flags); |
661a0f71 FS |
519 | if (ret < 0) { |
520 | error_report("Invalid cache option: %s", cache); | |
521 | return -1; | |
522 | } | |
523 | ||
f9f552e8 | 524 | bs = bdrv_new_open(filename, fmt, flags, true); |
c2abccec MK |
525 | if (!bs) { |
526 | return 1; | |
527 | } | |
ea2384d3 FB |
528 | ret = bdrv_commit(bs); |
529 | switch(ret) { | |
530 | case 0: | |
531 | printf("Image committed.\n"); | |
532 | break; | |
533 | case -ENOENT: | |
15654a6d | 534 | error_report("No disk inserted"); |
ea2384d3 FB |
535 | break; |
536 | case -EACCES: | |
15654a6d | 537 | error_report("Image is read-only"); |
ea2384d3 FB |
538 | break; |
539 | case -ENOTSUP: | |
15654a6d | 540 | error_report("Image is already committed"); |
ea2384d3 FB |
541 | break; |
542 | default: | |
15654a6d | 543 | error_report("Error while committing image"); |
ea2384d3 FB |
544 | break; |
545 | } | |
546 | ||
547 | bdrv_delete(bs); | |
c2abccec MK |
548 | if (ret) { |
549 | return 1; | |
550 | } | |
ea2384d3 FB |
551 | return 0; |
552 | } | |
553 | ||
f58c7b35 TS |
554 | /* |
555 | * Returns true iff the first sector pointed to by 'buf' contains at least | |
556 | * a non-NUL byte. | |
557 | * | |
558 | * 'pnum' is set to the number of sectors (including and immediately following | |
559 | * the first one) that are known to be in the same allocated/unallocated state. | |
560 | */ | |
ea2384d3 FB |
561 | static int is_allocated_sectors(const uint8_t *buf, int n, int *pnum) |
562 | { | |
1a6d39fd SH |
563 | bool is_zero; |
564 | int i; | |
ea2384d3 FB |
565 | |
566 | if (n <= 0) { | |
567 | *pnum = 0; | |
568 | return 0; | |
569 | } | |
1a6d39fd | 570 | is_zero = buffer_is_zero(buf, 512); |
ea2384d3 FB |
571 | for(i = 1; i < n; i++) { |
572 | buf += 512; | |
1a6d39fd | 573 | if (is_zero != buffer_is_zero(buf, 512)) { |
ea2384d3 | 574 | break; |
1a6d39fd | 575 | } |
ea2384d3 FB |
576 | } |
577 | *pnum = i; | |
1a6d39fd | 578 | return !is_zero; |
ea2384d3 FB |
579 | } |
580 | ||
a22f123c KW |
581 | /* |
582 | * Like is_allocated_sectors, but if the buffer starts with a used sector, | |
583 | * up to 'min' consecutive sectors containing zeros are ignored. This avoids | |
584 | * breaking up write requests for only small sparse areas. | |
585 | */ | |
586 | static int is_allocated_sectors_min(const uint8_t *buf, int n, int *pnum, | |
587 | int min) | |
588 | { | |
589 | int ret; | |
590 | int num_checked, num_used; | |
591 | ||
592 | if (n < min) { | |
593 | min = n; | |
594 | } | |
595 | ||
596 | ret = is_allocated_sectors(buf, n, pnum); | |
597 | if (!ret) { | |
598 | return ret; | |
599 | } | |
600 | ||
601 | num_used = *pnum; | |
602 | buf += BDRV_SECTOR_SIZE * *pnum; | |
603 | n -= *pnum; | |
604 | num_checked = num_used; | |
605 | ||
606 | while (n > 0) { | |
607 | ret = is_allocated_sectors(buf, n, pnum); | |
608 | ||
609 | buf += BDRV_SECTOR_SIZE * *pnum; | |
610 | n -= *pnum; | |
611 | num_checked += *pnum; | |
612 | if (ret) { | |
613 | num_used = num_checked; | |
614 | } else if (*pnum >= min) { | |
615 | break; | |
616 | } | |
617 | } | |
618 | ||
619 | *pnum = num_used; | |
620 | return 1; | |
621 | } | |
622 | ||
3e85c6fd KW |
623 | /* |
624 | * Compares two buffers sector by sector. Returns 0 if the first sector of both | |
625 | * buffers matches, non-zero otherwise. | |
626 | * | |
627 | * pnum is set to the number of sectors (including and immediately following | |
628 | * the first one) that are known to have the same comparison result | |
629 | */ | |
630 | static int compare_sectors(const uint8_t *buf1, const uint8_t *buf2, int n, | |
631 | int *pnum) | |
632 | { | |
633 | int res, i; | |
634 | ||
635 | if (n <= 0) { | |
636 | *pnum = 0; | |
637 | return 0; | |
638 | } | |
639 | ||
640 | res = !!memcmp(buf1, buf2, 512); | |
641 | for(i = 1; i < n; i++) { | |
642 | buf1 += 512; | |
643 | buf2 += 512; | |
644 | ||
645 | if (!!memcmp(buf1, buf2, 512) != res) { | |
646 | break; | |
647 | } | |
648 | } | |
649 | ||
650 | *pnum = i; | |
651 | return res; | |
652 | } | |
653 | ||
80ee15a6 | 654 | #define IO_BUF_SIZE (2 * 1024 * 1024) |
ea2384d3 FB |
655 | |
656 | static int img_convert(int argc, char **argv) | |
657 | { | |
eec77d9e | 658 | int c, ret = 0, n, n1, bs_n, bs_i, compress, cluster_size, cluster_sectors; |
661a0f71 FS |
659 | int progress = 0, flags; |
660 | const char *fmt, *out_fmt, *cache, *out_baseimg, *out_filename; | |
b50cbabc | 661 | BlockDriver *drv, *proto_drv; |
c2abccec | 662 | BlockDriverState **bs = NULL, *out_bs = NULL; |
96b8f136 TS |
663 | int64_t total_sectors, nb_sectors, sector_num, bs_offset; |
664 | uint64_t bs_sectors; | |
c2abccec | 665 | uint8_t * buf = NULL; |
ea2384d3 | 666 | const uint8_t *buf1; |
faea38e7 | 667 | BlockDriverInfo bdi; |
b50cbabc | 668 | QEMUOptionParameter *param = NULL, *create_options = NULL; |
a18953fb | 669 | QEMUOptionParameter *out_baseimg_param; |
efa84d43 | 670 | char *options = NULL; |
51ef6727 | 671 | const char *snapshot_name = NULL; |
6b837bc4 | 672 | float local_progress; |
a22f123c | 673 | int min_sparse = 8; /* Need at least 4k of zeros for sparse detection */ |
ea2384d3 FB |
674 | |
675 | fmt = NULL; | |
676 | out_fmt = "raw"; | |
661a0f71 | 677 | cache = "unsafe"; |
f58c7b35 | 678 | out_baseimg = NULL; |
eec77d9e | 679 | compress = 0; |
ea2384d3 | 680 | for(;;) { |
a22f123c | 681 | c = getopt(argc, argv, "f:O:B:s:hce6o:pS:t:"); |
b8fb60da | 682 | if (c == -1) { |
ea2384d3 | 683 | break; |
b8fb60da | 684 | } |
ea2384d3 | 685 | switch(c) { |
ef87394c | 686 | case '?': |
ea2384d3 FB |
687 | case 'h': |
688 | help(); | |
689 | break; | |
690 | case 'f': | |
691 | fmt = optarg; | |
692 | break; | |
693 | case 'O': | |
694 | out_fmt = optarg; | |
695 | break; | |
f58c7b35 TS |
696 | case 'B': |
697 | out_baseimg = optarg; | |
698 | break; | |
ea2384d3 | 699 | case 'c': |
eec77d9e | 700 | compress = 1; |
ea2384d3 FB |
701 | break; |
702 | case 'e': | |
9d42e15d | 703 | error_report("option -e is deprecated, please use \'-o " |
eec77d9e JS |
704 | "encryption\' instead!"); |
705 | return 1; | |
ec36ba14 | 706 | case '6': |
9d42e15d | 707 | error_report("option -6 is deprecated, please use \'-o " |
eec77d9e JS |
708 | "compat6\' instead!"); |
709 | return 1; | |
efa84d43 KW |
710 | case 'o': |
711 | options = optarg; | |
712 | break; | |
51ef6727 | 713 | case 's': |
714 | snapshot_name = optarg; | |
715 | break; | |
a22f123c KW |
716 | case 'S': |
717 | { | |
718 | int64_t sval; | |
e36b3695 MA |
719 | char *end; |
720 | sval = strtosz_suffix(optarg, &end, STRTOSZ_DEFSUFFIX_B); | |
721 | if (sval < 0 || *end) { | |
a22f123c KW |
722 | error_report("Invalid minimum zero buffer size for sparse output specified"); |
723 | return 1; | |
724 | } | |
725 | ||
726 | min_sparse = sval / BDRV_SECTOR_SIZE; | |
727 | break; | |
728 | } | |
6b837bc4 JS |
729 | case 'p': |
730 | progress = 1; | |
731 | break; | |
661a0f71 FS |
732 | case 't': |
733 | cache = optarg; | |
734 | break; | |
ea2384d3 FB |
735 | } |
736 | } | |
3b46e624 | 737 | |
926c2d23 | 738 | bs_n = argc - optind - 1; |
b8fb60da JS |
739 | if (bs_n < 1) { |
740 | help(); | |
741 | } | |
926c2d23 AZ |
742 | |
743 | out_filename = argv[argc - 1]; | |
f58c7b35 | 744 | |
fa170c14 CA |
745 | /* Initialize before goto out */ |
746 | qemu_progress_init(progress, 2.0); | |
747 | ||
c8057f95 | 748 | if (options && is_help_option(options)) { |
4ac8aacd JS |
749 | ret = print_block_option_help(out_filename, out_fmt); |
750 | goto out; | |
751 | } | |
752 | ||
c2abccec | 753 | if (bs_n > 1 && out_baseimg) { |
15654a6d JS |
754 | error_report("-B makes no sense when concatenating multiple input " |
755 | "images"); | |
31ca34b8 JS |
756 | ret = -1; |
757 | goto out; | |
c2abccec | 758 | } |
f8111c24 | 759 | |
6b837bc4 JS |
760 | qemu_progress_print(0, 100); |
761 | ||
7267c094 | 762 | bs = g_malloc0(bs_n * sizeof(BlockDriverState *)); |
926c2d23 AZ |
763 | |
764 | total_sectors = 0; | |
765 | for (bs_i = 0; bs_i < bs_n; bs_i++) { | |
f9f552e8 | 766 | bs[bs_i] = bdrv_new_open(argv[optind + bs_i], fmt, BDRV_O_FLAGS, true); |
c2abccec | 767 | if (!bs[bs_i]) { |
15654a6d | 768 | error_report("Could not open '%s'", argv[optind + bs_i]); |
c2abccec MK |
769 | ret = -1; |
770 | goto out; | |
771 | } | |
926c2d23 AZ |
772 | bdrv_get_geometry(bs[bs_i], &bs_sectors); |
773 | total_sectors += bs_sectors; | |
774 | } | |
ea2384d3 | 775 | |
51ef6727 | 776 | if (snapshot_name != NULL) { |
777 | if (bs_n > 1) { | |
6daf194d | 778 | error_report("No support for concatenating multiple snapshot"); |
51ef6727 | 779 | ret = -1; |
780 | goto out; | |
781 | } | |
782 | if (bdrv_snapshot_load_tmp(bs[0], snapshot_name) < 0) { | |
6daf194d | 783 | error_report("Failed to load snapshot"); |
51ef6727 | 784 | ret = -1; |
785 | goto out; | |
786 | } | |
787 | } | |
788 | ||
efa84d43 | 789 | /* Find driver and parse its options */ |
ea2384d3 | 790 | drv = bdrv_find_format(out_fmt); |
c2abccec | 791 | if (!drv) { |
15654a6d | 792 | error_report("Unknown file format '%s'", out_fmt); |
c2abccec MK |
793 | ret = -1; |
794 | goto out; | |
795 | } | |
efa84d43 | 796 | |
b50cbabc | 797 | proto_drv = bdrv_find_protocol(out_filename); |
c2abccec | 798 | if (!proto_drv) { |
15654a6d | 799 | error_report("Unknown protocol '%s'", out_filename); |
c2abccec MK |
800 | ret = -1; |
801 | goto out; | |
802 | } | |
b50cbabc MK |
803 | |
804 | create_options = append_option_parameters(create_options, | |
805 | drv->create_options); | |
806 | create_options = append_option_parameters(create_options, | |
807 | proto_drv->create_options); | |
db08adf5 | 808 | |
efa84d43 | 809 | if (options) { |
b50cbabc | 810 | param = parse_option_parameters(options, create_options, param); |
efa84d43 | 811 | if (param == NULL) { |
15654a6d | 812 | error_report("Invalid options for file format '%s'.", out_fmt); |
c2abccec MK |
813 | ret = -1; |
814 | goto out; | |
efa84d43 KW |
815 | } |
816 | } else { | |
b50cbabc | 817 | param = parse_option_parameters("", create_options, param); |
efa84d43 KW |
818 | } |
819 | ||
820 | set_option_parameter_int(param, BLOCK_OPT_SIZE, total_sectors * 512); | |
eec77d9e | 821 | ret = add_old_style_options(out_fmt, param, out_baseimg, NULL); |
c2abccec MK |
822 | if (ret < 0) { |
823 | goto out; | |
824 | } | |
efa84d43 | 825 | |
a18953fb KW |
826 | /* Get backing file name if -o backing_file was used */ |
827 | out_baseimg_param = get_option_parameter(param, BLOCK_OPT_BACKING_FILE); | |
828 | if (out_baseimg_param) { | |
829 | out_baseimg = out_baseimg_param->value.s; | |
830 | } | |
831 | ||
efa84d43 | 832 | /* Check if compression is supported */ |
eec77d9e | 833 | if (compress) { |
efa84d43 KW |
834 | QEMUOptionParameter *encryption = |
835 | get_option_parameter(param, BLOCK_OPT_ENCRYPT); | |
41521fa4 KW |
836 | QEMUOptionParameter *preallocation = |
837 | get_option_parameter(param, BLOCK_OPT_PREALLOC); | |
efa84d43 KW |
838 | |
839 | if (!drv->bdrv_write_compressed) { | |
15654a6d | 840 | error_report("Compression not supported for this file format"); |
c2abccec MK |
841 | ret = -1; |
842 | goto out; | |
efa84d43 KW |
843 | } |
844 | ||
845 | if (encryption && encryption->value.n) { | |
15654a6d JS |
846 | error_report("Compression and encryption not supported at " |
847 | "the same time"); | |
c2abccec MK |
848 | ret = -1; |
849 | goto out; | |
efa84d43 | 850 | } |
41521fa4 KW |
851 | |
852 | if (preallocation && preallocation->value.s | |
853 | && strcmp(preallocation->value.s, "off")) | |
854 | { | |
855 | error_report("Compression and preallocation not supported at " | |
856 | "the same time"); | |
857 | ret = -1; | |
858 | goto out; | |
859 | } | |
efa84d43 KW |
860 | } |
861 | ||
862 | /* Create the new image */ | |
863 | ret = bdrv_create(drv, out_filename, param); | |
ea2384d3 FB |
864 | if (ret < 0) { |
865 | if (ret == -ENOTSUP) { | |
15654a6d JS |
866 | error_report("Formatting not supported for file format '%s'", |
867 | out_fmt); | |
6e9ea0c0 | 868 | } else if (ret == -EFBIG) { |
15654a6d JS |
869 | error_report("The image size is too large for file format '%s'", |
870 | out_fmt); | |
ea2384d3 | 871 | } else { |
15654a6d JS |
872 | error_report("%s: error while converting %s: %s", |
873 | out_filename, out_fmt, strerror(-ret)); | |
ea2384d3 | 874 | } |
c2abccec | 875 | goto out; |
ea2384d3 | 876 | } |
3b46e624 | 877 | |
661a0f71 | 878 | flags = BDRV_O_RDWR; |
c3993cdc | 879 | ret = bdrv_parse_cache_flags(cache, &flags); |
661a0f71 FS |
880 | if (ret < 0) { |
881 | error_report("Invalid cache option: %s", cache); | |
882 | return -1; | |
883 | } | |
884 | ||
f9f552e8 | 885 | out_bs = bdrv_new_open(out_filename, out_fmt, flags, true); |
c2abccec MK |
886 | if (!out_bs) { |
887 | ret = -1; | |
888 | goto out; | |
889 | } | |
ea2384d3 | 890 | |
926c2d23 AZ |
891 | bs_i = 0; |
892 | bs_offset = 0; | |
893 | bdrv_get_geometry(bs[0], &bs_sectors); | |
bb1c0597 | 894 | buf = qemu_blockalign(out_bs, IO_BUF_SIZE); |
926c2d23 | 895 | |
eec77d9e | 896 | if (compress) { |
c2abccec MK |
897 | ret = bdrv_get_info(out_bs, &bdi); |
898 | if (ret < 0) { | |
15654a6d | 899 | error_report("could not get block driver info"); |
c2abccec MK |
900 | goto out; |
901 | } | |
faea38e7 | 902 | cluster_size = bdi.cluster_size; |
c2abccec | 903 | if (cluster_size <= 0 || cluster_size > IO_BUF_SIZE) { |
15654a6d | 904 | error_report("invalid cluster size"); |
c2abccec MK |
905 | ret = -1; |
906 | goto out; | |
907 | } | |
ea2384d3 FB |
908 | cluster_sectors = cluster_size >> 9; |
909 | sector_num = 0; | |
6b837bc4 JS |
910 | |
911 | nb_sectors = total_sectors; | |
912 | local_progress = (float)100 / | |
4ee96418 | 913 | (nb_sectors / MIN(nb_sectors, cluster_sectors)); |
6b837bc4 | 914 | |
ea2384d3 | 915 | for(;;) { |
926c2d23 AZ |
916 | int64_t bs_num; |
917 | int remainder; | |
918 | uint8_t *buf2; | |
919 | ||
ea2384d3 FB |
920 | nb_sectors = total_sectors - sector_num; |
921 | if (nb_sectors <= 0) | |
922 | break; | |
923 | if (nb_sectors >= cluster_sectors) | |
924 | n = cluster_sectors; | |
925 | else | |
926 | n = nb_sectors; | |
926c2d23 AZ |
927 | |
928 | bs_num = sector_num - bs_offset; | |
929 | assert (bs_num >= 0); | |
930 | remainder = n; | |
931 | buf2 = buf; | |
932 | while (remainder > 0) { | |
933 | int nlow; | |
934 | while (bs_num == bs_sectors) { | |
935 | bs_i++; | |
936 | assert (bs_i < bs_n); | |
937 | bs_offset += bs_sectors; | |
938 | bdrv_get_geometry(bs[bs_i], &bs_sectors); | |
939 | bs_num = 0; | |
0bfcd599 BS |
940 | /* printf("changing part: sector_num=%" PRId64 ", " |
941 | "bs_i=%d, bs_offset=%" PRId64 ", bs_sectors=%" PRId64 | |
942 | "\n", sector_num, bs_i, bs_offset, bs_sectors); */ | |
926c2d23 AZ |
943 | } |
944 | assert (bs_num < bs_sectors); | |
945 | ||
946 | nlow = (remainder > bs_sectors - bs_num) ? bs_sectors - bs_num : remainder; | |
947 | ||
c2abccec MK |
948 | ret = bdrv_read(bs[bs_i], bs_num, buf2, nlow); |
949 | if (ret < 0) { | |
3fba9d81 SH |
950 | error_report("error while reading sector %" PRId64 ": %s", |
951 | bs_num, strerror(-ret)); | |
c2abccec MK |
952 | goto out; |
953 | } | |
926c2d23 AZ |
954 | |
955 | buf2 += nlow * 512; | |
956 | bs_num += nlow; | |
957 | ||
958 | remainder -= nlow; | |
959 | } | |
960 | assert (remainder == 0); | |
961 | ||
b8fb60da | 962 | if (n < cluster_sectors) { |
ea2384d3 | 963 | memset(buf + n * 512, 0, cluster_size - n * 512); |
b8fb60da | 964 | } |
1a6d39fd | 965 | if (!buffer_is_zero(buf, cluster_size)) { |
c2abccec MK |
966 | ret = bdrv_write_compressed(out_bs, sector_num, buf, |
967 | cluster_sectors); | |
968 | if (ret != 0) { | |
3fba9d81 SH |
969 | error_report("error while compressing sector %" PRId64 |
970 | ": %s", sector_num, strerror(-ret)); | |
c2abccec MK |
971 | goto out; |
972 | } | |
ea2384d3 FB |
973 | } |
974 | sector_num += n; | |
6b837bc4 | 975 | qemu_progress_print(local_progress, 100); |
ea2384d3 | 976 | } |
faea38e7 FB |
977 | /* signal EOF to align */ |
978 | bdrv_write_compressed(out_bs, 0, NULL, 0); | |
ea2384d3 | 979 | } else { |
f2feebbd KW |
980 | int has_zero_init = bdrv_has_zero_init(out_bs); |
981 | ||
f58c7b35 | 982 | sector_num = 0; // total number of sectors converted so far |
6b837bc4 JS |
983 | nb_sectors = total_sectors - sector_num; |
984 | local_progress = (float)100 / | |
4ee96418 | 985 | (nb_sectors / MIN(nb_sectors, IO_BUF_SIZE / 512)); |
6b837bc4 | 986 | |
ea2384d3 FB |
987 | for(;;) { |
988 | nb_sectors = total_sectors - sector_num; | |
b8fb60da | 989 | if (nb_sectors <= 0) { |
ea2384d3 | 990 | break; |
b8fb60da JS |
991 | } |
992 | if (nb_sectors >= (IO_BUF_SIZE / 512)) { | |
ea2384d3 | 993 | n = (IO_BUF_SIZE / 512); |
b8fb60da | 994 | } else { |
ea2384d3 | 995 | n = nb_sectors; |
b8fb60da | 996 | } |
926c2d23 AZ |
997 | |
998 | while (sector_num - bs_offset >= bs_sectors) { | |
999 | bs_i ++; | |
1000 | assert (bs_i < bs_n); | |
1001 | bs_offset += bs_sectors; | |
1002 | bdrv_get_geometry(bs[bs_i], &bs_sectors); | |
0bfcd599 BS |
1003 | /* printf("changing part: sector_num=%" PRId64 ", bs_i=%d, " |
1004 | "bs_offset=%" PRId64 ", bs_sectors=%" PRId64 "\n", | |
926c2d23 AZ |
1005 | sector_num, bs_i, bs_offset, bs_sectors); */ |
1006 | } | |
1007 | ||
b8fb60da | 1008 | if (n > bs_offset + bs_sectors - sector_num) { |
926c2d23 | 1009 | n = bs_offset + bs_sectors - sector_num; |
b8fb60da | 1010 | } |
926c2d23 | 1011 | |
f2feebbd | 1012 | if (has_zero_init) { |
d032044f AS |
1013 | /* If the output image is being created as a copy on write image, |
1014 | assume that sectors which are unallocated in the input image | |
1015 | are present in both the output's and input's base images (no | |
1016 | need to copy them). */ | |
1017 | if (out_baseimg) { | |
1018 | if (!bdrv_is_allocated(bs[bs_i], sector_num - bs_offset, | |
1019 | n, &n1)) { | |
1020 | sector_num += n1; | |
1021 | continue; | |
1022 | } | |
1023 | /* The next 'n1' sectors are allocated in the input image. Copy | |
1024 | only those as they may be followed by unallocated sectors. */ | |
1025 | n = n1; | |
93c65b47 | 1026 | } |
93c65b47 AL |
1027 | } else { |
1028 | n1 = n; | |
f58c7b35 TS |
1029 | } |
1030 | ||
c2abccec MK |
1031 | ret = bdrv_read(bs[bs_i], sector_num - bs_offset, buf, n); |
1032 | if (ret < 0) { | |
3fba9d81 SH |
1033 | error_report("error while reading sector %" PRId64 ": %s", |
1034 | sector_num - bs_offset, strerror(-ret)); | |
c2abccec MK |
1035 | goto out; |
1036 | } | |
ea2384d3 FB |
1037 | /* NOTE: at the same time we convert, we do not write zero |
1038 | sectors to have a chance to compress the image. Ideally, we | |
1039 | should add a specific call to have the info to go faster */ | |
1040 | buf1 = buf; | |
1041 | while (n > 0) { | |
f58c7b35 TS |
1042 | /* If the output image is being created as a copy on write image, |
1043 | copy all sectors even the ones containing only NUL bytes, | |
93c65b47 AL |
1044 | because they may differ from the sectors in the base image. |
1045 | ||
1046 | If the output is to a host device, we also write out | |
1047 | sectors that are entirely 0, since whatever data was | |
1048 | already there is garbage, not 0s. */ | |
f2feebbd | 1049 | if (!has_zero_init || out_baseimg || |
a22f123c | 1050 | is_allocated_sectors_min(buf1, n, &n1, min_sparse)) { |
c2abccec MK |
1051 | ret = bdrv_write(out_bs, sector_num, buf1, n1); |
1052 | if (ret < 0) { | |
3fba9d81 SH |
1053 | error_report("error while writing sector %" PRId64 |
1054 | ": %s", sector_num, strerror(-ret)); | |
c2abccec MK |
1055 | goto out; |
1056 | } | |
ea2384d3 FB |
1057 | } |
1058 | sector_num += n1; | |
1059 | n -= n1; | |
1060 | buf1 += n1 * 512; | |
1061 | } | |
6b837bc4 | 1062 | qemu_progress_print(local_progress, 100); |
ea2384d3 FB |
1063 | } |
1064 | } | |
c2abccec | 1065 | out: |
6b837bc4 | 1066 | qemu_progress_end(); |
c2abccec MK |
1067 | free_option_parameters(create_options); |
1068 | free_option_parameters(param); | |
bb1c0597 | 1069 | qemu_vfree(buf); |
c2abccec MK |
1070 | if (out_bs) { |
1071 | bdrv_delete(out_bs); | |
1072 | } | |
31ca34b8 JS |
1073 | if (bs) { |
1074 | for (bs_i = 0; bs_i < bs_n; bs_i++) { | |
1075 | if (bs[bs_i]) { | |
1076 | bdrv_delete(bs[bs_i]); | |
1077 | } | |
c2abccec | 1078 | } |
7267c094 | 1079 | g_free(bs); |
c2abccec | 1080 | } |
c2abccec MK |
1081 | if (ret) { |
1082 | return 1; | |
1083 | } | |
ea2384d3 FB |
1084 | return 0; |
1085 | } | |
1086 | ||
57d1a2b6 | 1087 | |
faea38e7 FB |
1088 | static void dump_snapshots(BlockDriverState *bs) |
1089 | { | |
1090 | QEMUSnapshotInfo *sn_tab, *sn; | |
1091 | int nb_sns, i; | |
1092 | char buf[256]; | |
1093 | ||
1094 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
1095 | if (nb_sns <= 0) | |
1096 | return; | |
1097 | printf("Snapshot list:\n"); | |
1098 | printf("%s\n", bdrv_snapshot_dump(buf, sizeof(buf), NULL)); | |
1099 | for(i = 0; i < nb_sns; i++) { | |
1100 | sn = &sn_tab[i]; | |
1101 | printf("%s\n", bdrv_snapshot_dump(buf, sizeof(buf), sn)); | |
1102 | } | |
7267c094 | 1103 | g_free(sn_tab); |
faea38e7 FB |
1104 | } |
1105 | ||
ea2384d3 FB |
1106 | static int img_info(int argc, char **argv) |
1107 | { | |
1108 | int c; | |
1109 | const char *filename, *fmt; | |
ea2384d3 | 1110 | BlockDriverState *bs; |
f8d6bba1 | 1111 | char size_buf[128], dsize_buf[128]; |
96b8f136 TS |
1112 | uint64_t total_sectors; |
1113 | int64_t allocated_size; | |
93b6b2a3 FB |
1114 | char backing_filename[1024]; |
1115 | char backing_filename2[1024]; | |
faea38e7 | 1116 | BlockDriverInfo bdi; |
ea2384d3 FB |
1117 | |
1118 | fmt = NULL; | |
1119 | for(;;) { | |
1120 | c = getopt(argc, argv, "f:h"); | |
b8fb60da | 1121 | if (c == -1) { |
ea2384d3 | 1122 | break; |
b8fb60da | 1123 | } |
ea2384d3 | 1124 | switch(c) { |
ef87394c | 1125 | case '?': |
ea2384d3 FB |
1126 | case 'h': |
1127 | help(); | |
1128 | break; | |
1129 | case 'f': | |
1130 | fmt = optarg; | |
1131 | break; | |
1132 | } | |
1133 | } | |
b8fb60da | 1134 | if (optind >= argc) { |
ea2384d3 | 1135 | help(); |
b8fb60da | 1136 | } |
ea2384d3 FB |
1137 | filename = argv[optind++]; |
1138 | ||
f9f552e8 | 1139 | bs = bdrv_new_open(filename, fmt, BDRV_O_FLAGS | BDRV_O_NO_BACKING, false); |
c2abccec MK |
1140 | if (!bs) { |
1141 | return 1; | |
1142 | } | |
ea2384d3 FB |
1143 | bdrv_get_geometry(bs, &total_sectors); |
1144 | get_human_readable_size(size_buf, sizeof(size_buf), total_sectors * 512); | |
4a1d5e1f | 1145 | allocated_size = bdrv_get_allocated_file_size(bs); |
b8fb60da | 1146 | if (allocated_size < 0) { |
a10ea30b | 1147 | snprintf(dsize_buf, sizeof(dsize_buf), "unavailable"); |
b8fb60da | 1148 | } else { |
5fafdf24 | 1149 | get_human_readable_size(dsize_buf, sizeof(dsize_buf), |
de167e41 | 1150 | allocated_size); |
b8fb60da | 1151 | } |
ea2384d3 FB |
1152 | printf("image: %s\n" |
1153 | "file format: %s\n" | |
ec3757de | 1154 | "virtual size: %s (%" PRId64 " bytes)\n" |
ea2384d3 | 1155 | "disk size: %s\n", |
f8d6bba1 | 1156 | filename, bdrv_get_format_name(bs), size_buf, |
ec3757de | 1157 | (total_sectors * 512), |
ea2384d3 | 1158 | dsize_buf); |
b8fb60da | 1159 | if (bdrv_is_encrypted(bs)) { |
ea2384d3 | 1160 | printf("encrypted: yes\n"); |
b8fb60da | 1161 | } |
faea38e7 | 1162 | if (bdrv_get_info(bs, &bdi) >= 0) { |
b8fb60da | 1163 | if (bdi.cluster_size != 0) { |
faea38e7 | 1164 | printf("cluster_size: %d\n", bdi.cluster_size); |
b8fb60da | 1165 | } |
64c79160 DXW |
1166 | if (bdi.is_dirty) { |
1167 | printf("cleanly shut down: no\n"); | |
1168 | } | |
faea38e7 | 1169 | } |
93b6b2a3 | 1170 | bdrv_get_backing_filename(bs, backing_filename, sizeof(backing_filename)); |
faea38e7 | 1171 | if (backing_filename[0] != '\0') { |
dc5a1371 PB |
1172 | bdrv_get_full_backing_filename(bs, backing_filename2, |
1173 | sizeof(backing_filename2)); | |
1174 | printf("backing file: %s", backing_filename); | |
1175 | if (strcmp(backing_filename, backing_filename2) != 0) { | |
1176 | printf(" (actual path: %s)", backing_filename2); | |
1177 | } | |
1178 | putchar('\n'); | |
faea38e7 FB |
1179 | } |
1180 | dump_snapshots(bs); | |
ea2384d3 FB |
1181 | bdrv_delete(bs); |
1182 | return 0; | |
1183 | } | |
1184 | ||
f7b4a940 AL |
1185 | #define SNAPSHOT_LIST 1 |
1186 | #define SNAPSHOT_CREATE 2 | |
1187 | #define SNAPSHOT_APPLY 3 | |
1188 | #define SNAPSHOT_DELETE 4 | |
1189 | ||
153859be | 1190 | static int img_snapshot(int argc, char **argv) |
f7b4a940 AL |
1191 | { |
1192 | BlockDriverState *bs; | |
1193 | QEMUSnapshotInfo sn; | |
1194 | char *filename, *snapshot_name = NULL; | |
c2abccec | 1195 | int c, ret = 0, bdrv_oflags; |
f7b4a940 AL |
1196 | int action = 0; |
1197 | qemu_timeval tv; | |
1198 | ||
710da702 | 1199 | bdrv_oflags = BDRV_O_FLAGS | BDRV_O_RDWR; |
f7b4a940 AL |
1200 | /* Parse commandline parameters */ |
1201 | for(;;) { | |
1202 | c = getopt(argc, argv, "la:c:d:h"); | |
b8fb60da | 1203 | if (c == -1) { |
f7b4a940 | 1204 | break; |
b8fb60da | 1205 | } |
f7b4a940 | 1206 | switch(c) { |
ef87394c | 1207 | case '?': |
f7b4a940 AL |
1208 | case 'h': |
1209 | help(); | |
153859be | 1210 | return 0; |
f7b4a940 AL |
1211 | case 'l': |
1212 | if (action) { | |
1213 | help(); | |
153859be | 1214 | return 0; |
f7b4a940 AL |
1215 | } |
1216 | action = SNAPSHOT_LIST; | |
f5edb014 | 1217 | bdrv_oflags &= ~BDRV_O_RDWR; /* no need for RW */ |
f7b4a940 AL |
1218 | break; |
1219 | case 'a': | |
1220 | if (action) { | |
1221 | help(); | |
153859be | 1222 | return 0; |
f7b4a940 AL |
1223 | } |
1224 | action = SNAPSHOT_APPLY; | |
1225 | snapshot_name = optarg; | |
1226 | break; | |
1227 | case 'c': | |
1228 | if (action) { | |
1229 | help(); | |
153859be | 1230 | return 0; |
f7b4a940 AL |
1231 | } |
1232 | action = SNAPSHOT_CREATE; | |
1233 | snapshot_name = optarg; | |
1234 | break; | |
1235 | case 'd': | |
1236 | if (action) { | |
1237 | help(); | |
153859be | 1238 | return 0; |
f7b4a940 AL |
1239 | } |
1240 | action = SNAPSHOT_DELETE; | |
1241 | snapshot_name = optarg; | |
1242 | break; | |
1243 | } | |
1244 | } | |
1245 | ||
b8fb60da | 1246 | if (optind >= argc) { |
f7b4a940 | 1247 | help(); |
b8fb60da | 1248 | } |
f7b4a940 AL |
1249 | filename = argv[optind++]; |
1250 | ||
1251 | /* Open the image */ | |
f9f552e8 | 1252 | bs = bdrv_new_open(filename, NULL, bdrv_oflags, true); |
c2abccec MK |
1253 | if (!bs) { |
1254 | return 1; | |
1255 | } | |
f7b4a940 AL |
1256 | |
1257 | /* Perform the requested action */ | |
1258 | switch(action) { | |
1259 | case SNAPSHOT_LIST: | |
1260 | dump_snapshots(bs); | |
1261 | break; | |
1262 | ||
1263 | case SNAPSHOT_CREATE: | |
1264 | memset(&sn, 0, sizeof(sn)); | |
1265 | pstrcpy(sn.name, sizeof(sn.name), snapshot_name); | |
1266 | ||
1267 | qemu_gettimeofday(&tv); | |
1268 | sn.date_sec = tv.tv_sec; | |
1269 | sn.date_nsec = tv.tv_usec * 1000; | |
1270 | ||
1271 | ret = bdrv_snapshot_create(bs, &sn); | |
b8fb60da | 1272 | if (ret) { |
15654a6d | 1273 | error_report("Could not create snapshot '%s': %d (%s)", |
f7b4a940 | 1274 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 1275 | } |
f7b4a940 AL |
1276 | break; |
1277 | ||
1278 | case SNAPSHOT_APPLY: | |
1279 | ret = bdrv_snapshot_goto(bs, snapshot_name); | |
b8fb60da | 1280 | if (ret) { |
15654a6d | 1281 | error_report("Could not apply snapshot '%s': %d (%s)", |
f7b4a940 | 1282 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 1283 | } |
f7b4a940 AL |
1284 | break; |
1285 | ||
1286 | case SNAPSHOT_DELETE: | |
1287 | ret = bdrv_snapshot_delete(bs, snapshot_name); | |
b8fb60da | 1288 | if (ret) { |
15654a6d | 1289 | error_report("Could not delete snapshot '%s': %d (%s)", |
f7b4a940 | 1290 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 1291 | } |
f7b4a940 AL |
1292 | break; |
1293 | } | |
1294 | ||
1295 | /* Cleanup */ | |
1296 | bdrv_delete(bs); | |
c2abccec MK |
1297 | if (ret) { |
1298 | return 1; | |
1299 | } | |
153859be | 1300 | return 0; |
f7b4a940 AL |
1301 | } |
1302 | ||
3e85c6fd KW |
1303 | static int img_rebase(int argc, char **argv) |
1304 | { | |
c2abccec | 1305 | BlockDriverState *bs, *bs_old_backing = NULL, *bs_new_backing = NULL; |
f163d073 | 1306 | BlockDriver *old_backing_drv, *new_backing_drv; |
3e85c6fd | 1307 | char *filename; |
661a0f71 | 1308 | const char *fmt, *cache, *out_basefmt, *out_baseimg; |
3e85c6fd KW |
1309 | int c, flags, ret; |
1310 | int unsafe = 0; | |
6b837bc4 | 1311 | int progress = 0; |
3e85c6fd KW |
1312 | |
1313 | /* Parse commandline parameters */ | |
e53dbee0 | 1314 | fmt = NULL; |
661a0f71 | 1315 | cache = BDRV_DEFAULT_CACHE; |
3e85c6fd KW |
1316 | out_baseimg = NULL; |
1317 | out_basefmt = NULL; | |
3e85c6fd | 1318 | for(;;) { |
661a0f71 | 1319 | c = getopt(argc, argv, "uhf:F:b:pt:"); |
b8fb60da | 1320 | if (c == -1) { |
3e85c6fd | 1321 | break; |
b8fb60da | 1322 | } |
3e85c6fd | 1323 | switch(c) { |
ef87394c | 1324 | case '?': |
3e85c6fd KW |
1325 | case 'h': |
1326 | help(); | |
1327 | return 0; | |
e53dbee0 KW |
1328 | case 'f': |
1329 | fmt = optarg; | |
1330 | break; | |
3e85c6fd KW |
1331 | case 'F': |
1332 | out_basefmt = optarg; | |
1333 | break; | |
1334 | case 'b': | |
1335 | out_baseimg = optarg; | |
1336 | break; | |
1337 | case 'u': | |
1338 | unsafe = 1; | |
1339 | break; | |
6b837bc4 JS |
1340 | case 'p': |
1341 | progress = 1; | |
1342 | break; | |
661a0f71 FS |
1343 | case 't': |
1344 | cache = optarg; | |
1345 | break; | |
3e85c6fd KW |
1346 | } |
1347 | } | |
1348 | ||
9a9d9dba | 1349 | if ((optind >= argc) || (!unsafe && !out_baseimg)) { |
3e85c6fd | 1350 | help(); |
b8fb60da | 1351 | } |
3e85c6fd KW |
1352 | filename = argv[optind++]; |
1353 | ||
6b837bc4 JS |
1354 | qemu_progress_init(progress, 2.0); |
1355 | qemu_progress_print(0, 100); | |
1356 | ||
661a0f71 | 1357 | flags = BDRV_O_RDWR | (unsafe ? BDRV_O_NO_BACKING : 0); |
c3993cdc | 1358 | ret = bdrv_parse_cache_flags(cache, &flags); |
661a0f71 FS |
1359 | if (ret < 0) { |
1360 | error_report("Invalid cache option: %s", cache); | |
1361 | return -1; | |
1362 | } | |
1363 | ||
3e85c6fd KW |
1364 | /* |
1365 | * Open the images. | |
1366 | * | |
1367 | * Ignore the old backing file for unsafe rebase in case we want to correct | |
1368 | * the reference to a renamed or moved backing file. | |
1369 | */ | |
f9f552e8 | 1370 | bs = bdrv_new_open(filename, fmt, flags, true); |
c2abccec MK |
1371 | if (!bs) { |
1372 | return 1; | |
1373 | } | |
3e85c6fd KW |
1374 | |
1375 | /* Find the right drivers for the backing files */ | |
1376 | old_backing_drv = NULL; | |
1377 | new_backing_drv = NULL; | |
1378 | ||
1379 | if (!unsafe && bs->backing_format[0] != '\0') { | |
1380 | old_backing_drv = bdrv_find_format(bs->backing_format); | |
1381 | if (old_backing_drv == NULL) { | |
15654a6d | 1382 | error_report("Invalid format name: '%s'", bs->backing_format); |
c2abccec MK |
1383 | ret = -1; |
1384 | goto out; | |
3e85c6fd KW |
1385 | } |
1386 | } | |
1387 | ||
1388 | if (out_basefmt != NULL) { | |
1389 | new_backing_drv = bdrv_find_format(out_basefmt); | |
1390 | if (new_backing_drv == NULL) { | |
15654a6d | 1391 | error_report("Invalid format name: '%s'", out_basefmt); |
c2abccec MK |
1392 | ret = -1; |
1393 | goto out; | |
3e85c6fd KW |
1394 | } |
1395 | } | |
1396 | ||
1397 | /* For safe rebasing we need to compare old and new backing file */ | |
1398 | if (unsafe) { | |
1399 | /* Make the compiler happy */ | |
1400 | bs_old_backing = NULL; | |
1401 | bs_new_backing = NULL; | |
1402 | } else { | |
1403 | char backing_name[1024]; | |
1404 | ||
1405 | bs_old_backing = bdrv_new("old_backing"); | |
1406 | bdrv_get_backing_filename(bs, backing_name, sizeof(backing_name)); | |
c2abccec MK |
1407 | ret = bdrv_open(bs_old_backing, backing_name, BDRV_O_FLAGS, |
1408 | old_backing_drv); | |
1409 | if (ret) { | |
15654a6d | 1410 | error_report("Could not open old backing file '%s'", backing_name); |
c2abccec | 1411 | goto out; |
3e85c6fd KW |
1412 | } |
1413 | ||
1414 | bs_new_backing = bdrv_new("new_backing"); | |
cdbae851 | 1415 | ret = bdrv_open(bs_new_backing, out_baseimg, BDRV_O_FLAGS, |
c2abccec MK |
1416 | new_backing_drv); |
1417 | if (ret) { | |
15654a6d | 1418 | error_report("Could not open new backing file '%s'", out_baseimg); |
c2abccec | 1419 | goto out; |
3e85c6fd KW |
1420 | } |
1421 | } | |
1422 | ||
1423 | /* | |
1424 | * Check each unallocated cluster in the COW file. If it is unallocated, | |
1425 | * accesses go to the backing file. We must therefore compare this cluster | |
1426 | * in the old and new backing file, and if they differ we need to copy it | |
1427 | * from the old backing file into the COW file. | |
1428 | * | |
1429 | * If qemu-img crashes during this step, no harm is done. The content of | |
1430 | * the image is the same as the original one at any time. | |
1431 | */ | |
1432 | if (!unsafe) { | |
1433 | uint64_t num_sectors; | |
87a1b3e3 KW |
1434 | uint64_t old_backing_num_sectors; |
1435 | uint64_t new_backing_num_sectors; | |
3e85c6fd | 1436 | uint64_t sector; |
cc60e327 | 1437 | int n; |
d6771bfa T |
1438 | uint8_t * buf_old; |
1439 | uint8_t * buf_new; | |
6b837bc4 | 1440 | float local_progress; |
d6771bfa | 1441 | |
bb1c0597 KW |
1442 | buf_old = qemu_blockalign(bs, IO_BUF_SIZE); |
1443 | buf_new = qemu_blockalign(bs, IO_BUF_SIZE); | |
3e85c6fd KW |
1444 | |
1445 | bdrv_get_geometry(bs, &num_sectors); | |
87a1b3e3 KW |
1446 | bdrv_get_geometry(bs_old_backing, &old_backing_num_sectors); |
1447 | bdrv_get_geometry(bs_new_backing, &new_backing_num_sectors); | |
3e85c6fd | 1448 | |
6b837bc4 | 1449 | local_progress = (float)100 / |
4ee96418 | 1450 | (num_sectors / MIN(num_sectors, IO_BUF_SIZE / 512)); |
3e85c6fd KW |
1451 | for (sector = 0; sector < num_sectors; sector += n) { |
1452 | ||
1453 | /* How many sectors can we handle with the next read? */ | |
1454 | if (sector + (IO_BUF_SIZE / 512) <= num_sectors) { | |
1455 | n = (IO_BUF_SIZE / 512); | |
1456 | } else { | |
1457 | n = num_sectors - sector; | |
1458 | } | |
1459 | ||
1460 | /* If the cluster is allocated, we don't need to take action */ | |
cc60e327 KW |
1461 | ret = bdrv_is_allocated(bs, sector, n, &n); |
1462 | if (ret) { | |
3e85c6fd KW |
1463 | continue; |
1464 | } | |
1465 | ||
87a1b3e3 KW |
1466 | /* |
1467 | * Read old and new backing file and take into consideration that | |
1468 | * backing files may be smaller than the COW image. | |
1469 | */ | |
1470 | if (sector >= old_backing_num_sectors) { | |
1471 | memset(buf_old, 0, n * BDRV_SECTOR_SIZE); | |
1472 | } else { | |
1473 | if (sector + n > old_backing_num_sectors) { | |
1474 | n = old_backing_num_sectors - sector; | |
1475 | } | |
1476 | ||
1477 | ret = bdrv_read(bs_old_backing, sector, buf_old, n); | |
1478 | if (ret < 0) { | |
1479 | error_report("error while reading from old backing file"); | |
1480 | goto out; | |
1481 | } | |
3e85c6fd | 1482 | } |
87a1b3e3 KW |
1483 | |
1484 | if (sector >= new_backing_num_sectors) { | |
1485 | memset(buf_new, 0, n * BDRV_SECTOR_SIZE); | |
1486 | } else { | |
1487 | if (sector + n > new_backing_num_sectors) { | |
1488 | n = new_backing_num_sectors - sector; | |
1489 | } | |
1490 | ||
1491 | ret = bdrv_read(bs_new_backing, sector, buf_new, n); | |
1492 | if (ret < 0) { | |
1493 | error_report("error while reading from new backing file"); | |
1494 | goto out; | |
1495 | } | |
3e85c6fd KW |
1496 | } |
1497 | ||
1498 | /* If they differ, we need to write to the COW file */ | |
1499 | uint64_t written = 0; | |
1500 | ||
1501 | while (written < n) { | |
1502 | int pnum; | |
1503 | ||
1504 | if (compare_sectors(buf_old + written * 512, | |
60b1bd4f | 1505 | buf_new + written * 512, n - written, &pnum)) |
3e85c6fd KW |
1506 | { |
1507 | ret = bdrv_write(bs, sector + written, | |
1508 | buf_old + written * 512, pnum); | |
1509 | if (ret < 0) { | |
15654a6d | 1510 | error_report("Error while writing to COW image: %s", |
3e85c6fd | 1511 | strerror(-ret)); |
c2abccec | 1512 | goto out; |
3e85c6fd KW |
1513 | } |
1514 | } | |
1515 | ||
1516 | written += pnum; | |
1517 | } | |
6b837bc4 | 1518 | qemu_progress_print(local_progress, 100); |
3e85c6fd | 1519 | } |
d6771bfa | 1520 | |
bb1c0597 KW |
1521 | qemu_vfree(buf_old); |
1522 | qemu_vfree(buf_new); | |
3e85c6fd KW |
1523 | } |
1524 | ||
1525 | /* | |
1526 | * Change the backing file. All clusters that are different from the old | |
1527 | * backing file are overwritten in the COW file now, so the visible content | |
1528 | * doesn't change when we switch the backing file. | |
1529 | */ | |
1530 | ret = bdrv_change_backing_file(bs, out_baseimg, out_basefmt); | |
1531 | if (ret == -ENOSPC) { | |
15654a6d JS |
1532 | error_report("Could not change the backing file to '%s': No " |
1533 | "space left in the file header", out_baseimg); | |
3e85c6fd | 1534 | } else if (ret < 0) { |
15654a6d | 1535 | error_report("Could not change the backing file to '%s': %s", |
3e85c6fd KW |
1536 | out_baseimg, strerror(-ret)); |
1537 | } | |
1538 | ||
6b837bc4 | 1539 | qemu_progress_print(100, 0); |
3e85c6fd KW |
1540 | /* |
1541 | * TODO At this point it is possible to check if any clusters that are | |
1542 | * allocated in the COW file are the same in the backing file. If so, they | |
1543 | * could be dropped from the COW file. Don't do this before switching the | |
1544 | * backing file, in case of a crash this would lead to corruption. | |
1545 | */ | |
c2abccec | 1546 | out: |
6b837bc4 | 1547 | qemu_progress_end(); |
3e85c6fd KW |
1548 | /* Cleanup */ |
1549 | if (!unsafe) { | |
eb863add KW |
1550 | if (bs_old_backing != NULL) { |
1551 | bdrv_delete(bs_old_backing); | |
1552 | } | |
1553 | if (bs_new_backing != NULL) { | |
1554 | bdrv_delete(bs_new_backing); | |
1555 | } | |
3e85c6fd KW |
1556 | } |
1557 | ||
1558 | bdrv_delete(bs); | |
c2abccec MK |
1559 | if (ret) { |
1560 | return 1; | |
1561 | } | |
3e85c6fd KW |
1562 | return 0; |
1563 | } | |
1564 | ||
ae6b0ed6 SH |
1565 | static int img_resize(int argc, char **argv) |
1566 | { | |
1567 | int c, ret, relative; | |
1568 | const char *filename, *fmt, *size; | |
1569 | int64_t n, total_size; | |
2a81998a | 1570 | BlockDriverState *bs = NULL; |
20caf0f7 DXW |
1571 | QemuOpts *param; |
1572 | static QemuOptsList resize_options = { | |
1573 | .name = "resize_options", | |
1574 | .head = QTAILQ_HEAD_INITIALIZER(resize_options.head), | |
1575 | .desc = { | |
1576 | { | |
1577 | .name = BLOCK_OPT_SIZE, | |
1578 | .type = QEMU_OPT_SIZE, | |
1579 | .help = "Virtual disk size" | |
1580 | }, { | |
1581 | /* end of list */ | |
1582 | } | |
ae6b0ed6 | 1583 | }, |
ae6b0ed6 SH |
1584 | }; |
1585 | ||
e80fec7f KW |
1586 | /* Remove size from argv manually so that negative numbers are not treated |
1587 | * as options by getopt. */ | |
1588 | if (argc < 3) { | |
1589 | help(); | |
1590 | return 1; | |
1591 | } | |
1592 | ||
1593 | size = argv[--argc]; | |
1594 | ||
1595 | /* Parse getopt arguments */ | |
ae6b0ed6 SH |
1596 | fmt = NULL; |
1597 | for(;;) { | |
1598 | c = getopt(argc, argv, "f:h"); | |
1599 | if (c == -1) { | |
1600 | break; | |
1601 | } | |
1602 | switch(c) { | |
ef87394c | 1603 | case '?': |
ae6b0ed6 SH |
1604 | case 'h': |
1605 | help(); | |
1606 | break; | |
1607 | case 'f': | |
1608 | fmt = optarg; | |
1609 | break; | |
1610 | } | |
1611 | } | |
e80fec7f | 1612 | if (optind >= argc) { |
ae6b0ed6 SH |
1613 | help(); |
1614 | } | |
1615 | filename = argv[optind++]; | |
ae6b0ed6 SH |
1616 | |
1617 | /* Choose grow, shrink, or absolute resize mode */ | |
1618 | switch (size[0]) { | |
1619 | case '+': | |
1620 | relative = 1; | |
1621 | size++; | |
1622 | break; | |
1623 | case '-': | |
1624 | relative = -1; | |
1625 | size++; | |
1626 | break; | |
1627 | default: | |
1628 | relative = 0; | |
1629 | break; | |
1630 | } | |
1631 | ||
1632 | /* Parse size */ | |
20caf0f7 DXW |
1633 | param = qemu_opts_create(&resize_options, NULL, 0, NULL); |
1634 | if (qemu_opt_set(param, BLOCK_OPT_SIZE, size)) { | |
ae6b0ed6 | 1635 | /* Error message already printed when size parsing fails */ |
2a81998a | 1636 | ret = -1; |
20caf0f7 | 1637 | qemu_opts_del(param); |
2a81998a | 1638 | goto out; |
ae6b0ed6 | 1639 | } |
20caf0f7 DXW |
1640 | n = qemu_opt_get_size(param, BLOCK_OPT_SIZE, 0); |
1641 | qemu_opts_del(param); | |
ae6b0ed6 | 1642 | |
f9f552e8 | 1643 | bs = bdrv_new_open(filename, fmt, BDRV_O_FLAGS | BDRV_O_RDWR, true); |
c2abccec | 1644 | if (!bs) { |
2a81998a JS |
1645 | ret = -1; |
1646 | goto out; | |
c2abccec | 1647 | } |
ae6b0ed6 SH |
1648 | |
1649 | if (relative) { | |
1650 | total_size = bdrv_getlength(bs) + n * relative; | |
1651 | } else { | |
1652 | total_size = n; | |
1653 | } | |
1654 | if (total_size <= 0) { | |
15654a6d | 1655 | error_report("New image size must be positive"); |
c2abccec MK |
1656 | ret = -1; |
1657 | goto out; | |
ae6b0ed6 SH |
1658 | } |
1659 | ||
1660 | ret = bdrv_truncate(bs, total_size); | |
1661 | switch (ret) { | |
1662 | case 0: | |
1663 | printf("Image resized.\n"); | |
1664 | break; | |
1665 | case -ENOTSUP: | |
259b2173 | 1666 | error_report("This image does not support resize"); |
ae6b0ed6 SH |
1667 | break; |
1668 | case -EACCES: | |
15654a6d | 1669 | error_report("Image is read-only"); |
ae6b0ed6 SH |
1670 | break; |
1671 | default: | |
15654a6d | 1672 | error_report("Error resizing image (%d)", -ret); |
ae6b0ed6 SH |
1673 | break; |
1674 | } | |
c2abccec | 1675 | out: |
2a81998a JS |
1676 | if (bs) { |
1677 | bdrv_delete(bs); | |
1678 | } | |
c2abccec MK |
1679 | if (ret) { |
1680 | return 1; | |
1681 | } | |
ae6b0ed6 SH |
1682 | return 0; |
1683 | } | |
1684 | ||
c227f099 | 1685 | static const img_cmd_t img_cmds[] = { |
153859be SB |
1686 | #define DEF(option, callback, arg_string) \ |
1687 | { option, callback }, | |
1688 | #include "qemu-img-cmds.h" | |
1689 | #undef DEF | |
1690 | #undef GEN_DOCS | |
1691 | { NULL, NULL, }, | |
1692 | }; | |
1693 | ||
ea2384d3 FB |
1694 | int main(int argc, char **argv) |
1695 | { | |
c227f099 | 1696 | const img_cmd_t *cmd; |
153859be | 1697 | const char *cmdname; |
ea2384d3 | 1698 | |
53f76e58 KW |
1699 | error_set_progname(argv[0]); |
1700 | ||
ea2384d3 FB |
1701 | bdrv_init(); |
1702 | if (argc < 2) | |
1703 | help(); | |
153859be | 1704 | cmdname = argv[1]; |
8f9b157e | 1705 | argc--; argv++; |
153859be | 1706 | |
67d384e8 ZYW |
1707 | qemu_init_main_loop(); |
1708 | ||
153859be SB |
1709 | /* find the command */ |
1710 | for(cmd = img_cmds; cmd->name != NULL; cmd++) { | |
1711 | if (!strcmp(cmdname, cmd->name)) { | |
1712 | return cmd->handler(argc, argv); | |
1713 | } | |
ea2384d3 | 1714 | } |
153859be SB |
1715 | |
1716 | /* not found */ | |
1717 | help(); | |
ea2384d3 FB |
1718 | return 0; |
1719 | } |