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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 | */ | |
c054b3fd BC |
24 | #include "qapi-visit.h" |
25 | #include "qapi/qmp-output-visitor.h" | |
26 | #include "qjson.h" | |
faf07963 | 27 | #include "qemu-common.h" |
9ea2ea71 | 28 | #include "qemu-option.h" |
53f76e58 | 29 | #include "qemu-error.h" |
f7b4a940 | 30 | #include "osdep.h" |
dc786bc9 | 31 | #include "sysemu.h" |
ec36ba14 | 32 | #include "block_int.h" |
c054b3fd | 33 | #include <getopt.h> |
9230eaf6 | 34 | #include <stdio.h> |
ea2384d3 | 35 | |
e8445331 FB |
36 | #ifdef _WIN32 |
37 | #include <windows.h> | |
38 | #endif | |
39 | ||
c227f099 | 40 | typedef struct img_cmd_t { |
153859be SB |
41 | const char *name; |
42 | int (*handler)(int argc, char **argv); | |
c227f099 | 43 | } img_cmd_t; |
153859be | 44 | |
137519ce | 45 | /* Default to cache=writeback as data integrity is not important for qemu-tcg. */ |
adfe078e | 46 | #define BDRV_O_FLAGS BDRV_O_CACHE_WB |
661a0f71 | 47 | #define BDRV_DEFAULT_CACHE "writeback" |
137519ce | 48 | |
ea2384d3 FB |
49 | static void format_print(void *opaque, const char *name) |
50 | { | |
51 | printf(" %s", name); | |
52 | } | |
53 | ||
d2c639d6 | 54 | /* Please keep in synch with qemu-img.texi */ |
3f379ab1 | 55 | static void help(void) |
ea2384d3 | 56 | { |
e00291c0 PB |
57 | const char *help_msg = |
58 | "qemu-img version " QEMU_VERSION ", Copyright (c) 2004-2008 Fabrice Bellard\n" | |
3f020d70 | 59 | "usage: qemu-img command [command options]\n" |
60 | "QEMU disk image utility\n" | |
61 | "\n" | |
62 | "Command syntax:\n" | |
153859be SB |
63 | #define DEF(option, callback, arg_string) \ |
64 | " " arg_string "\n" | |
65 | #include "qemu-img-cmds.h" | |
66 | #undef DEF | |
67 | #undef GEN_DOCS | |
3f020d70 | 68 | "\n" |
69 | "Command parameters:\n" | |
70 | " 'filename' is a disk image filename\n" | |
71 | " 'fmt' is the disk image format. It is guessed automatically in most cases\n" | |
661a0f71 | 72 | " 'cache' is the cache mode used to write the output disk image, the valid\n" |
80ccf93b LY |
73 | " options are: 'none', 'writeback' (default, except for convert), 'writethrough',\n" |
74 | " 'directsync' and 'unsafe' (default for convert)\n" | |
3f020d70 | 75 | " 'size' is the disk image size in bytes. Optional suffixes\n" |
76 | " 'k' or 'K' (kilobyte, 1024), 'M' (megabyte, 1024k), 'G' (gigabyte, 1024M)\n" | |
77 | " and T (terabyte, 1024G) are supported. 'b' is ignored.\n" | |
78 | " 'output_filename' is the destination disk image filename\n" | |
79 | " 'output_fmt' is the destination format\n" | |
80 | " 'options' is a comma separated list of format specific options in a\n" | |
81 | " name=value format. Use -o ? for an overview of the options supported by the\n" | |
82 | " used format\n" | |
83 | " '-c' indicates that target image must be compressed (qcow format only)\n" | |
84 | " '-u' enables unsafe rebasing. It is assumed that old and new backing file\n" | |
85 | " match exactly. The image doesn't need a working backing file before\n" | |
86 | " rebasing in this case (useful for renaming the backing file)\n" | |
87 | " '-h' with or without a command shows this help and lists the supported formats\n" | |
6b837bc4 | 88 | " '-p' show progress of command (only certain commands)\n" |
a22f123c KW |
89 | " '-S' indicates the consecutive number of bytes that must contain only zeros\n" |
90 | " for qemu-img to create a sparse image during conversion\n" | |
c054b3fd | 91 | " '--output' takes the format in which the output must be done (human or json)\n" |
3f020d70 | 92 | "\n" |
4534ff54 KW |
93 | "Parameters to check subcommand:\n" |
94 | " '-r' tries to repair any inconsistencies that are found during the check.\n" | |
95 | " '-r leaks' repairs only cluster leaks, whereas '-r all' fixes all\n" | |
96 | " kinds of errors, with a higher risk of choosing the wrong fix or\n" | |
0546b8c2 | 97 | " hiding corruption that has already occurred.\n" |
4534ff54 | 98 | "\n" |
3f020d70 | 99 | "Parameters to snapshot subcommand:\n" |
100 | " 'snapshot' is the name of the snapshot to create, apply or delete\n" | |
101 | " '-a' applies a snapshot (revert disk to saved state)\n" | |
102 | " '-c' creates a snapshot\n" | |
103 | " '-d' deletes a snapshot\n" | |
e00291c0 PB |
104 | " '-l' lists all snapshots in the given image\n"; |
105 | ||
106 | printf("%s\nSupported formats:", help_msg); | |
ea2384d3 FB |
107 | bdrv_iterate_format(format_print, NULL); |
108 | printf("\n"); | |
109 | exit(1); | |
110 | } | |
111 | ||
ea2384d3 FB |
112 | #if defined(WIN32) |
113 | /* XXX: put correct support for win32 */ | |
114 | static int read_password(char *buf, int buf_size) | |
115 | { | |
116 | int c, i; | |
117 | printf("Password: "); | |
118 | fflush(stdout); | |
119 | i = 0; | |
120 | for(;;) { | |
121 | c = getchar(); | |
122 | if (c == '\n') | |
123 | break; | |
124 | if (i < (buf_size - 1)) | |
125 | buf[i++] = c; | |
126 | } | |
127 | buf[i] = '\0'; | |
128 | return 0; | |
129 | } | |
130 | ||
131 | #else | |
132 | ||
133 | #include <termios.h> | |
134 | ||
135 | static struct termios oldtty; | |
136 | ||
137 | static void term_exit(void) | |
138 | { | |
139 | tcsetattr (0, TCSANOW, &oldtty); | |
140 | } | |
141 | ||
142 | static void term_init(void) | |
143 | { | |
144 | struct termios tty; | |
145 | ||
146 | tcgetattr (0, &tty); | |
147 | oldtty = tty; | |
148 | ||
149 | tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP | |
150 | |INLCR|IGNCR|ICRNL|IXON); | |
151 | tty.c_oflag |= OPOST; | |
152 | tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN); | |
153 | tty.c_cflag &= ~(CSIZE|PARENB); | |
154 | tty.c_cflag |= CS8; | |
155 | tty.c_cc[VMIN] = 1; | |
156 | tty.c_cc[VTIME] = 0; | |
3b46e624 | 157 | |
ea2384d3 FB |
158 | tcsetattr (0, TCSANOW, &tty); |
159 | ||
160 | atexit(term_exit); | |
161 | } | |
162 | ||
3f379ab1 | 163 | static int read_password(char *buf, int buf_size) |
ea2384d3 FB |
164 | { |
165 | uint8_t ch; | |
166 | int i, ret; | |
167 | ||
168 | printf("password: "); | |
169 | fflush(stdout); | |
170 | term_init(); | |
171 | i = 0; | |
172 | for(;;) { | |
173 | ret = read(0, &ch, 1); | |
174 | if (ret == -1) { | |
175 | if (errno == EAGAIN || errno == EINTR) { | |
176 | continue; | |
177 | } else { | |
178 | ret = -1; | |
179 | break; | |
180 | } | |
181 | } else if (ret == 0) { | |
182 | ret = -1; | |
183 | break; | |
184 | } else { | |
185 | if (ch == '\r') { | |
186 | ret = 0; | |
187 | break; | |
188 | } | |
189 | if (i < (buf_size - 1)) | |
190 | buf[i++] = ch; | |
191 | } | |
192 | } | |
193 | term_exit(); | |
194 | buf[i] = '\0'; | |
195 | printf("\n"); | |
196 | return ret; | |
197 | } | |
198 | #endif | |
199 | ||
4ac8aacd JS |
200 | static int print_block_option_help(const char *filename, const char *fmt) |
201 | { | |
202 | BlockDriver *drv, *proto_drv; | |
203 | QEMUOptionParameter *create_options = NULL; | |
204 | ||
205 | /* Find driver and parse its options */ | |
206 | drv = bdrv_find_format(fmt); | |
207 | if (!drv) { | |
15654a6d | 208 | error_report("Unknown file format '%s'", fmt); |
4ac8aacd JS |
209 | return 1; |
210 | } | |
211 | ||
212 | proto_drv = bdrv_find_protocol(filename); | |
213 | if (!proto_drv) { | |
15654a6d | 214 | error_report("Unknown protocol '%s'", filename); |
4ac8aacd JS |
215 | return 1; |
216 | } | |
217 | ||
218 | create_options = append_option_parameters(create_options, | |
219 | drv->create_options); | |
220 | create_options = append_option_parameters(create_options, | |
221 | proto_drv->create_options); | |
222 | print_option_help(create_options); | |
223 | free_option_parameters(create_options); | |
224 | return 0; | |
225 | } | |
226 | ||
75c23805 | 227 | static BlockDriverState *bdrv_new_open(const char *filename, |
9bc378c1 | 228 | const char *fmt, |
f0536bb8 DB |
229 | int flags, |
230 | bool require_io) | |
75c23805 FB |
231 | { |
232 | BlockDriverState *bs; | |
233 | BlockDriver *drv; | |
234 | char password[256]; | |
b9eaf9ec | 235 | int ret; |
75c23805 | 236 | |
b9eaf9ec | 237 | bs = bdrv_new("image"); |
ad717139 | 238 | |
75c23805 FB |
239 | if (fmt) { |
240 | drv = bdrv_find_format(fmt); | |
c2abccec | 241 | if (!drv) { |
15654a6d | 242 | error_report("Unknown file format '%s'", fmt); |
c2abccec MK |
243 | goto fail; |
244 | } | |
75c23805 FB |
245 | } else { |
246 | drv = NULL; | |
247 | } | |
b9eaf9ec KW |
248 | |
249 | ret = bdrv_open(bs, filename, flags, drv); | |
250 | if (ret < 0) { | |
251 | error_report("Could not open '%s': %s", filename, strerror(-ret)); | |
c2abccec | 252 | goto fail; |
75c23805 | 253 | } |
b9eaf9ec | 254 | |
f0536bb8 | 255 | if (bdrv_is_encrypted(bs) && require_io) { |
75c23805 | 256 | printf("Disk image '%s' is encrypted.\n", filename); |
c2abccec | 257 | if (read_password(password, sizeof(password)) < 0) { |
15654a6d | 258 | error_report("No password given"); |
c2abccec MK |
259 | goto fail; |
260 | } | |
261 | if (bdrv_set_key(bs, password) < 0) { | |
15654a6d | 262 | error_report("invalid password"); |
c2abccec MK |
263 | goto fail; |
264 | } | |
75c23805 FB |
265 | } |
266 | return bs; | |
c2abccec MK |
267 | fail: |
268 | if (bs) { | |
269 | bdrv_delete(bs); | |
270 | } | |
271 | return NULL; | |
75c23805 FB |
272 | } |
273 | ||
c2abccec | 274 | static int add_old_style_options(const char *fmt, QEMUOptionParameter *list, |
eec77d9e JS |
275 | const char *base_filename, |
276 | const char *base_fmt) | |
efa84d43 | 277 | { |
efa84d43 KW |
278 | if (base_filename) { |
279 | if (set_option_parameter(list, BLOCK_OPT_BACKING_FILE, base_filename)) { | |
15654a6d JS |
280 | error_report("Backing file not supported for file format '%s'", |
281 | fmt); | |
c2abccec | 282 | return -1; |
efa84d43 KW |
283 | } |
284 | } | |
285 | if (base_fmt) { | |
286 | if (set_option_parameter(list, BLOCK_OPT_BACKING_FMT, base_fmt)) { | |
15654a6d JS |
287 | error_report("Backing file format not supported for file " |
288 | "format '%s'", fmt); | |
c2abccec | 289 | return -1; |
efa84d43 KW |
290 | } |
291 | } | |
c2abccec | 292 | return 0; |
efa84d43 KW |
293 | } |
294 | ||
ea2384d3 FB |
295 | static int img_create(int argc, char **argv) |
296 | { | |
eec77d9e | 297 | int c, ret = 0; |
1da7cfbd | 298 | uint64_t img_size = -1; |
ea2384d3 | 299 | const char *fmt = "raw"; |
9230eaf6 | 300 | const char *base_fmt = NULL; |
ea2384d3 FB |
301 | const char *filename; |
302 | const char *base_filename = NULL; | |
9ea2ea71 | 303 | char *options = NULL; |
9b37525a | 304 | Error *local_err = NULL; |
3b46e624 | 305 | |
ea2384d3 | 306 | for(;;) { |
9ea2ea71 | 307 | c = getopt(argc, argv, "F:b:f:he6o:"); |
b8fb60da | 308 | if (c == -1) { |
ea2384d3 | 309 | break; |
b8fb60da | 310 | } |
ea2384d3 | 311 | switch(c) { |
ef87394c | 312 | case '?': |
ea2384d3 FB |
313 | case 'h': |
314 | help(); | |
315 | break; | |
9230eaf6 AL |
316 | case 'F': |
317 | base_fmt = optarg; | |
318 | break; | |
ea2384d3 FB |
319 | case 'b': |
320 | base_filename = optarg; | |
321 | break; | |
322 | case 'f': | |
323 | fmt = optarg; | |
324 | break; | |
325 | case 'e': | |
9d42e15d | 326 | error_report("option -e is deprecated, please use \'-o " |
eec77d9e JS |
327 | "encryption\' instead!"); |
328 | return 1; | |
d8871c5a | 329 | case '6': |
9d42e15d | 330 | error_report("option -6 is deprecated, please use \'-o " |
eec77d9e JS |
331 | "compat6\' instead!"); |
332 | return 1; | |
9ea2ea71 KW |
333 | case 'o': |
334 | options = optarg; | |
335 | break; | |
ea2384d3 FB |
336 | } |
337 | } | |
9230eaf6 | 338 | |
b50cbabc | 339 | /* Get the filename */ |
b8fb60da | 340 | if (optind >= argc) { |
b50cbabc | 341 | help(); |
b8fb60da | 342 | } |
b50cbabc MK |
343 | filename = argv[optind++]; |
344 | ||
1da7cfbd JS |
345 | /* Get image size, if specified */ |
346 | if (optind < argc) { | |
70b4f4bb | 347 | int64_t sval; |
e36b3695 MA |
348 | char *end; |
349 | sval = strtosz_suffix(argv[optind++], &end, STRTOSZ_DEFSUFFIX_B); | |
350 | if (sval < 0 || *end) { | |
15654a6d | 351 | error_report("Invalid image size specified! You may use k, M, G or " |
1da7cfbd | 352 | "T suffixes for "); |
15654a6d | 353 | error_report("kilobytes, megabytes, gigabytes and terabytes."); |
1da7cfbd JS |
354 | ret = -1; |
355 | goto out; | |
356 | } | |
357 | img_size = (uint64_t)sval; | |
358 | } | |
359 | ||
c8057f95 | 360 | if (options && is_help_option(options)) { |
4ac8aacd JS |
361 | ret = print_block_option_help(filename, fmt); |
362 | goto out; | |
363 | } | |
364 | ||
9b37525a LC |
365 | bdrv_img_create(filename, fmt, base_filename, base_fmt, |
366 | options, img_size, BDRV_O_FLAGS, &local_err); | |
367 | if (error_is_set(&local_err)) { | |
368 | error_report("%s", error_get_pretty(local_err)); | |
369 | error_free(local_err); | |
370 | ret = -1; | |
371 | } | |
372 | ||
c2abccec MK |
373 | out: |
374 | if (ret) { | |
375 | return 1; | |
376 | } | |
ea2384d3 FB |
377 | return 0; |
378 | } | |
379 | ||
e076f338 KW |
380 | /* |
381 | * Checks an image for consistency. Exit codes: | |
382 | * | |
383 | * 0 - Check completed, image is good | |
384 | * 1 - Check not completed because of internal errors | |
385 | * 2 - Check completed, image is corrupted | |
386 | * 3 - Check completed, image has leaked clusters, but is good otherwise | |
387 | */ | |
1585969c AL |
388 | static int img_check(int argc, char **argv) |
389 | { | |
390 | int c, ret; | |
391 | const char *filename, *fmt; | |
1585969c | 392 | BlockDriverState *bs; |
e076f338 | 393 | BdrvCheckResult result; |
4534ff54 | 394 | int fix = 0; |
058f8f16 | 395 | int flags = BDRV_O_FLAGS | BDRV_O_CHECK; |
1585969c AL |
396 | |
397 | fmt = NULL; | |
398 | for(;;) { | |
4534ff54 | 399 | c = getopt(argc, argv, "f:hr:"); |
b8fb60da | 400 | if (c == -1) { |
1585969c | 401 | break; |
b8fb60da | 402 | } |
1585969c | 403 | switch(c) { |
ef87394c | 404 | case '?': |
1585969c AL |
405 | case 'h': |
406 | help(); | |
407 | break; | |
408 | case 'f': | |
409 | fmt = optarg; | |
410 | break; | |
4534ff54 KW |
411 | case 'r': |
412 | flags |= BDRV_O_RDWR; | |
413 | ||
414 | if (!strcmp(optarg, "leaks")) { | |
415 | fix = BDRV_FIX_LEAKS; | |
416 | } else if (!strcmp(optarg, "all")) { | |
417 | fix = BDRV_FIX_LEAKS | BDRV_FIX_ERRORS; | |
418 | } else { | |
419 | help(); | |
420 | } | |
421 | break; | |
1585969c AL |
422 | } |
423 | } | |
b8fb60da | 424 | if (optind >= argc) { |
1585969c | 425 | help(); |
b8fb60da | 426 | } |
1585969c AL |
427 | filename = argv[optind++]; |
428 | ||
f0536bb8 | 429 | bs = bdrv_new_open(filename, fmt, flags, true); |
c2abccec MK |
430 | if (!bs) { |
431 | return 1; | |
432 | } | |
4534ff54 | 433 | ret = bdrv_check(bs, &result, fix); |
e076f338 KW |
434 | |
435 | if (ret == -ENOTSUP) { | |
15654a6d | 436 | error_report("This image format does not support checks"); |
e076f338 KW |
437 | bdrv_delete(bs); |
438 | return 1; | |
439 | } | |
440 | ||
ccf34716 KW |
441 | if (result.corruptions_fixed || result.leaks_fixed) { |
442 | printf("The following inconsistencies were found and repaired:\n\n" | |
443 | " %d leaked clusters\n" | |
444 | " %d corruptions\n\n" | |
445 | "Double checking the fixed image now...\n", | |
446 | result.leaks_fixed, | |
447 | result.corruptions_fixed); | |
448 | ret = bdrv_check(bs, &result, 0); | |
449 | } | |
450 | ||
e076f338 KW |
451 | if (!(result.corruptions || result.leaks || result.check_errors)) { |
452 | printf("No errors were found on the image.\n"); | |
453 | } else { | |
454 | if (result.corruptions) { | |
455 | printf("\n%d errors were found on the image.\n" | |
456 | "Data may be corrupted, or further writes to the image " | |
457 | "may corrupt it.\n", | |
458 | result.corruptions); | |
459 | } | |
460 | ||
461 | if (result.leaks) { | |
462 | printf("\n%d leaked clusters were found on the image.\n" | |
463 | "This means waste of disk space, but no harm to data.\n", | |
464 | result.leaks); | |
465 | } | |
466 | ||
467 | if (result.check_errors) { | |
468 | printf("\n%d internal errors have occurred during the check.\n", | |
469 | result.check_errors); | |
1585969c | 470 | } |
1585969c AL |
471 | } |
472 | ||
f8111c24 DXW |
473 | if (result.bfi.total_clusters != 0 && result.bfi.allocated_clusters != 0) { |
474 | printf("%" PRId64 "/%" PRId64 "= %0.2f%% allocated, %0.2f%% fragmented\n", | |
475 | result.bfi.allocated_clusters, result.bfi.total_clusters, | |
476 | result.bfi.allocated_clusters * 100.0 / result.bfi.total_clusters, | |
477 | result.bfi.fragmented_clusters * 100.0 / result.bfi.allocated_clusters); | |
478 | } | |
479 | ||
1585969c | 480 | bdrv_delete(bs); |
e076f338 KW |
481 | |
482 | if (ret < 0 || result.check_errors) { | |
483 | printf("\nAn error has occurred during the check: %s\n" | |
484 | "The check is not complete and may have missed error.\n", | |
485 | strerror(-ret)); | |
c2abccec MK |
486 | return 1; |
487 | } | |
e076f338 KW |
488 | |
489 | if (result.corruptions) { | |
490 | return 2; | |
491 | } else if (result.leaks) { | |
492 | return 3; | |
493 | } else { | |
494 | return 0; | |
495 | } | |
1585969c AL |
496 | } |
497 | ||
ea2384d3 FB |
498 | static int img_commit(int argc, char **argv) |
499 | { | |
661a0f71 FS |
500 | int c, ret, flags; |
501 | const char *filename, *fmt, *cache; | |
ea2384d3 FB |
502 | BlockDriverState *bs; |
503 | ||
504 | fmt = NULL; | |
661a0f71 | 505 | cache = BDRV_DEFAULT_CACHE; |
ea2384d3 | 506 | for(;;) { |
661a0f71 | 507 | c = getopt(argc, argv, "f:ht:"); |
b8fb60da | 508 | if (c == -1) { |
ea2384d3 | 509 | break; |
b8fb60da | 510 | } |
ea2384d3 | 511 | switch(c) { |
ef87394c | 512 | case '?': |
ea2384d3 FB |
513 | case 'h': |
514 | help(); | |
515 | break; | |
516 | case 'f': | |
517 | fmt = optarg; | |
518 | break; | |
661a0f71 FS |
519 | case 't': |
520 | cache = optarg; | |
521 | break; | |
ea2384d3 FB |
522 | } |
523 | } | |
b8fb60da | 524 | if (optind >= argc) { |
ea2384d3 | 525 | help(); |
b8fb60da | 526 | } |
ea2384d3 FB |
527 | filename = argv[optind++]; |
528 | ||
661a0f71 | 529 | flags = BDRV_O_RDWR; |
c3993cdc | 530 | ret = bdrv_parse_cache_flags(cache, &flags); |
661a0f71 FS |
531 | if (ret < 0) { |
532 | error_report("Invalid cache option: %s", cache); | |
533 | return -1; | |
534 | } | |
535 | ||
f0536bb8 | 536 | bs = bdrv_new_open(filename, fmt, flags, true); |
c2abccec MK |
537 | if (!bs) { |
538 | return 1; | |
539 | } | |
ea2384d3 FB |
540 | ret = bdrv_commit(bs); |
541 | switch(ret) { | |
542 | case 0: | |
543 | printf("Image committed.\n"); | |
544 | break; | |
545 | case -ENOENT: | |
15654a6d | 546 | error_report("No disk inserted"); |
ea2384d3 FB |
547 | break; |
548 | case -EACCES: | |
15654a6d | 549 | error_report("Image is read-only"); |
ea2384d3 FB |
550 | break; |
551 | case -ENOTSUP: | |
15654a6d | 552 | error_report("Image is already committed"); |
ea2384d3 FB |
553 | break; |
554 | default: | |
15654a6d | 555 | error_report("Error while committing image"); |
ea2384d3 FB |
556 | break; |
557 | } | |
558 | ||
559 | bdrv_delete(bs); | |
c2abccec MK |
560 | if (ret) { |
561 | return 1; | |
562 | } | |
ea2384d3 FB |
563 | return 0; |
564 | } | |
565 | ||
f58c7b35 TS |
566 | /* |
567 | * Returns true iff the first sector pointed to by 'buf' contains at least | |
568 | * a non-NUL byte. | |
569 | * | |
570 | * 'pnum' is set to the number of sectors (including and immediately following | |
571 | * the first one) that are known to be in the same allocated/unallocated state. | |
572 | */ | |
ea2384d3 FB |
573 | static int is_allocated_sectors(const uint8_t *buf, int n, int *pnum) |
574 | { | |
1a6d39fd SH |
575 | bool is_zero; |
576 | int i; | |
ea2384d3 FB |
577 | |
578 | if (n <= 0) { | |
579 | *pnum = 0; | |
580 | return 0; | |
581 | } | |
1a6d39fd | 582 | is_zero = buffer_is_zero(buf, 512); |
ea2384d3 FB |
583 | for(i = 1; i < n; i++) { |
584 | buf += 512; | |
1a6d39fd | 585 | if (is_zero != buffer_is_zero(buf, 512)) { |
ea2384d3 | 586 | break; |
1a6d39fd | 587 | } |
ea2384d3 FB |
588 | } |
589 | *pnum = i; | |
1a6d39fd | 590 | return !is_zero; |
ea2384d3 FB |
591 | } |
592 | ||
a22f123c KW |
593 | /* |
594 | * Like is_allocated_sectors, but if the buffer starts with a used sector, | |
595 | * up to 'min' consecutive sectors containing zeros are ignored. This avoids | |
596 | * breaking up write requests for only small sparse areas. | |
597 | */ | |
598 | static int is_allocated_sectors_min(const uint8_t *buf, int n, int *pnum, | |
599 | int min) | |
600 | { | |
601 | int ret; | |
602 | int num_checked, num_used; | |
603 | ||
604 | if (n < min) { | |
605 | min = n; | |
606 | } | |
607 | ||
608 | ret = is_allocated_sectors(buf, n, pnum); | |
609 | if (!ret) { | |
610 | return ret; | |
611 | } | |
612 | ||
613 | num_used = *pnum; | |
614 | buf += BDRV_SECTOR_SIZE * *pnum; | |
615 | n -= *pnum; | |
616 | num_checked = num_used; | |
617 | ||
618 | while (n > 0) { | |
619 | ret = is_allocated_sectors(buf, n, pnum); | |
620 | ||
621 | buf += BDRV_SECTOR_SIZE * *pnum; | |
622 | n -= *pnum; | |
623 | num_checked += *pnum; | |
624 | if (ret) { | |
625 | num_used = num_checked; | |
626 | } else if (*pnum >= min) { | |
627 | break; | |
628 | } | |
629 | } | |
630 | ||
631 | *pnum = num_used; | |
632 | return 1; | |
633 | } | |
634 | ||
3e85c6fd KW |
635 | /* |
636 | * Compares two buffers sector by sector. Returns 0 if the first sector of both | |
637 | * buffers matches, non-zero otherwise. | |
638 | * | |
639 | * pnum is set to the number of sectors (including and immediately following | |
640 | * the first one) that are known to have the same comparison result | |
641 | */ | |
642 | static int compare_sectors(const uint8_t *buf1, const uint8_t *buf2, int n, | |
643 | int *pnum) | |
644 | { | |
645 | int res, i; | |
646 | ||
647 | if (n <= 0) { | |
648 | *pnum = 0; | |
649 | return 0; | |
650 | } | |
651 | ||
652 | res = !!memcmp(buf1, buf2, 512); | |
653 | for(i = 1; i < n; i++) { | |
654 | buf1 += 512; | |
655 | buf2 += 512; | |
656 | ||
657 | if (!!memcmp(buf1, buf2, 512) != res) { | |
658 | break; | |
659 | } | |
660 | } | |
661 | ||
662 | *pnum = i; | |
663 | return res; | |
664 | } | |
665 | ||
80ee15a6 | 666 | #define IO_BUF_SIZE (2 * 1024 * 1024) |
ea2384d3 FB |
667 | |
668 | static int img_convert(int argc, char **argv) | |
669 | { | |
eec77d9e | 670 | int c, ret = 0, n, n1, bs_n, bs_i, compress, cluster_size, cluster_sectors; |
661a0f71 FS |
671 | int progress = 0, flags; |
672 | const char *fmt, *out_fmt, *cache, *out_baseimg, *out_filename; | |
b50cbabc | 673 | BlockDriver *drv, *proto_drv; |
c2abccec | 674 | BlockDriverState **bs = NULL, *out_bs = NULL; |
96b8f136 TS |
675 | int64_t total_sectors, nb_sectors, sector_num, bs_offset; |
676 | uint64_t bs_sectors; | |
c2abccec | 677 | uint8_t * buf = NULL; |
ea2384d3 | 678 | const uint8_t *buf1; |
faea38e7 | 679 | BlockDriverInfo bdi; |
b50cbabc | 680 | QEMUOptionParameter *param = NULL, *create_options = NULL; |
a18953fb | 681 | QEMUOptionParameter *out_baseimg_param; |
efa84d43 | 682 | char *options = NULL; |
51ef6727 | 683 | const char *snapshot_name = NULL; |
1f710495 | 684 | float local_progress = 0; |
a22f123c | 685 | int min_sparse = 8; /* Need at least 4k of zeros for sparse detection */ |
ea2384d3 FB |
686 | |
687 | fmt = NULL; | |
688 | out_fmt = "raw"; | |
661a0f71 | 689 | cache = "unsafe"; |
f58c7b35 | 690 | out_baseimg = NULL; |
eec77d9e | 691 | compress = 0; |
ea2384d3 | 692 | for(;;) { |
a22f123c | 693 | c = getopt(argc, argv, "f:O:B:s:hce6o:pS:t:"); |
b8fb60da | 694 | if (c == -1) { |
ea2384d3 | 695 | break; |
b8fb60da | 696 | } |
ea2384d3 | 697 | switch(c) { |
ef87394c | 698 | case '?': |
ea2384d3 FB |
699 | case 'h': |
700 | help(); | |
701 | break; | |
702 | case 'f': | |
703 | fmt = optarg; | |
704 | break; | |
705 | case 'O': | |
706 | out_fmt = optarg; | |
707 | break; | |
f58c7b35 TS |
708 | case 'B': |
709 | out_baseimg = optarg; | |
710 | break; | |
ea2384d3 | 711 | case 'c': |
eec77d9e | 712 | compress = 1; |
ea2384d3 FB |
713 | break; |
714 | case 'e': | |
9d42e15d | 715 | error_report("option -e is deprecated, please use \'-o " |
eec77d9e JS |
716 | "encryption\' instead!"); |
717 | return 1; | |
ec36ba14 | 718 | case '6': |
9d42e15d | 719 | error_report("option -6 is deprecated, please use \'-o " |
eec77d9e JS |
720 | "compat6\' instead!"); |
721 | return 1; | |
efa84d43 KW |
722 | case 'o': |
723 | options = optarg; | |
724 | break; | |
51ef6727 | 725 | case 's': |
726 | snapshot_name = optarg; | |
727 | break; | |
a22f123c KW |
728 | case 'S': |
729 | { | |
730 | int64_t sval; | |
e36b3695 MA |
731 | char *end; |
732 | sval = strtosz_suffix(optarg, &end, STRTOSZ_DEFSUFFIX_B); | |
733 | if (sval < 0 || *end) { | |
a22f123c KW |
734 | error_report("Invalid minimum zero buffer size for sparse output specified"); |
735 | return 1; | |
736 | } | |
737 | ||
738 | min_sparse = sval / BDRV_SECTOR_SIZE; | |
739 | break; | |
740 | } | |
6b837bc4 JS |
741 | case 'p': |
742 | progress = 1; | |
743 | break; | |
661a0f71 FS |
744 | case 't': |
745 | cache = optarg; | |
746 | break; | |
ea2384d3 FB |
747 | } |
748 | } | |
3b46e624 | 749 | |
926c2d23 | 750 | bs_n = argc - optind - 1; |
b8fb60da JS |
751 | if (bs_n < 1) { |
752 | help(); | |
753 | } | |
926c2d23 AZ |
754 | |
755 | out_filename = argv[argc - 1]; | |
f58c7b35 | 756 | |
fa170c14 CA |
757 | /* Initialize before goto out */ |
758 | qemu_progress_init(progress, 2.0); | |
759 | ||
c8057f95 | 760 | if (options && is_help_option(options)) { |
4ac8aacd JS |
761 | ret = print_block_option_help(out_filename, out_fmt); |
762 | goto out; | |
763 | } | |
764 | ||
c2abccec | 765 | if (bs_n > 1 && out_baseimg) { |
15654a6d JS |
766 | error_report("-B makes no sense when concatenating multiple input " |
767 | "images"); | |
31ca34b8 JS |
768 | ret = -1; |
769 | goto out; | |
c2abccec | 770 | } |
f8111c24 | 771 | |
6b837bc4 JS |
772 | qemu_progress_print(0, 100); |
773 | ||
7267c094 | 774 | bs = g_malloc0(bs_n * sizeof(BlockDriverState *)); |
926c2d23 AZ |
775 | |
776 | total_sectors = 0; | |
777 | for (bs_i = 0; bs_i < bs_n; bs_i++) { | |
f0536bb8 | 778 | bs[bs_i] = bdrv_new_open(argv[optind + bs_i], fmt, BDRV_O_FLAGS, true); |
c2abccec | 779 | if (!bs[bs_i]) { |
15654a6d | 780 | error_report("Could not open '%s'", argv[optind + bs_i]); |
c2abccec MK |
781 | ret = -1; |
782 | goto out; | |
783 | } | |
926c2d23 AZ |
784 | bdrv_get_geometry(bs[bs_i], &bs_sectors); |
785 | total_sectors += bs_sectors; | |
786 | } | |
ea2384d3 | 787 | |
51ef6727 | 788 | if (snapshot_name != NULL) { |
789 | if (bs_n > 1) { | |
6daf194d | 790 | error_report("No support for concatenating multiple snapshot"); |
51ef6727 | 791 | ret = -1; |
792 | goto out; | |
793 | } | |
794 | if (bdrv_snapshot_load_tmp(bs[0], snapshot_name) < 0) { | |
6daf194d | 795 | error_report("Failed to load snapshot"); |
51ef6727 | 796 | ret = -1; |
797 | goto out; | |
798 | } | |
799 | } | |
800 | ||
efa84d43 | 801 | /* Find driver and parse its options */ |
ea2384d3 | 802 | drv = bdrv_find_format(out_fmt); |
c2abccec | 803 | if (!drv) { |
15654a6d | 804 | error_report("Unknown file format '%s'", out_fmt); |
c2abccec MK |
805 | ret = -1; |
806 | goto out; | |
807 | } | |
efa84d43 | 808 | |
b50cbabc | 809 | proto_drv = bdrv_find_protocol(out_filename); |
c2abccec | 810 | if (!proto_drv) { |
15654a6d | 811 | error_report("Unknown protocol '%s'", out_filename); |
c2abccec MK |
812 | ret = -1; |
813 | goto out; | |
814 | } | |
b50cbabc MK |
815 | |
816 | create_options = append_option_parameters(create_options, | |
817 | drv->create_options); | |
818 | create_options = append_option_parameters(create_options, | |
819 | proto_drv->create_options); | |
db08adf5 | 820 | |
efa84d43 | 821 | if (options) { |
b50cbabc | 822 | param = parse_option_parameters(options, create_options, param); |
efa84d43 | 823 | if (param == NULL) { |
15654a6d | 824 | error_report("Invalid options for file format '%s'.", out_fmt); |
c2abccec MK |
825 | ret = -1; |
826 | goto out; | |
efa84d43 KW |
827 | } |
828 | } else { | |
b50cbabc | 829 | param = parse_option_parameters("", create_options, param); |
efa84d43 KW |
830 | } |
831 | ||
832 | set_option_parameter_int(param, BLOCK_OPT_SIZE, total_sectors * 512); | |
eec77d9e | 833 | ret = add_old_style_options(out_fmt, param, out_baseimg, NULL); |
c2abccec MK |
834 | if (ret < 0) { |
835 | goto out; | |
836 | } | |
efa84d43 | 837 | |
a18953fb KW |
838 | /* Get backing file name if -o backing_file was used */ |
839 | out_baseimg_param = get_option_parameter(param, BLOCK_OPT_BACKING_FILE); | |
840 | if (out_baseimg_param) { | |
841 | out_baseimg = out_baseimg_param->value.s; | |
842 | } | |
843 | ||
efa84d43 | 844 | /* Check if compression is supported */ |
eec77d9e | 845 | if (compress) { |
efa84d43 KW |
846 | QEMUOptionParameter *encryption = |
847 | get_option_parameter(param, BLOCK_OPT_ENCRYPT); | |
41521fa4 KW |
848 | QEMUOptionParameter *preallocation = |
849 | get_option_parameter(param, BLOCK_OPT_PREALLOC); | |
efa84d43 KW |
850 | |
851 | if (!drv->bdrv_write_compressed) { | |
15654a6d | 852 | error_report("Compression not supported for this file format"); |
c2abccec MK |
853 | ret = -1; |
854 | goto out; | |
efa84d43 KW |
855 | } |
856 | ||
857 | if (encryption && encryption->value.n) { | |
15654a6d JS |
858 | error_report("Compression and encryption not supported at " |
859 | "the same time"); | |
c2abccec MK |
860 | ret = -1; |
861 | goto out; | |
efa84d43 | 862 | } |
41521fa4 KW |
863 | |
864 | if (preallocation && preallocation->value.s | |
865 | && strcmp(preallocation->value.s, "off")) | |
866 | { | |
867 | error_report("Compression and preallocation not supported at " | |
868 | "the same time"); | |
869 | ret = -1; | |
870 | goto out; | |
871 | } | |
efa84d43 KW |
872 | } |
873 | ||
874 | /* Create the new image */ | |
875 | ret = bdrv_create(drv, out_filename, param); | |
ea2384d3 FB |
876 | if (ret < 0) { |
877 | if (ret == -ENOTSUP) { | |
15654a6d JS |
878 | error_report("Formatting not supported for file format '%s'", |
879 | out_fmt); | |
6e9ea0c0 | 880 | } else if (ret == -EFBIG) { |
15654a6d JS |
881 | error_report("The image size is too large for file format '%s'", |
882 | out_fmt); | |
ea2384d3 | 883 | } else { |
15654a6d JS |
884 | error_report("%s: error while converting %s: %s", |
885 | out_filename, out_fmt, strerror(-ret)); | |
ea2384d3 | 886 | } |
c2abccec | 887 | goto out; |
ea2384d3 | 888 | } |
3b46e624 | 889 | |
661a0f71 | 890 | flags = BDRV_O_RDWR; |
c3993cdc | 891 | ret = bdrv_parse_cache_flags(cache, &flags); |
661a0f71 FS |
892 | if (ret < 0) { |
893 | error_report("Invalid cache option: %s", cache); | |
894 | return -1; | |
895 | } | |
896 | ||
f0536bb8 | 897 | out_bs = bdrv_new_open(out_filename, out_fmt, flags, true); |
c2abccec MK |
898 | if (!out_bs) { |
899 | ret = -1; | |
900 | goto out; | |
901 | } | |
ea2384d3 | 902 | |
926c2d23 AZ |
903 | bs_i = 0; |
904 | bs_offset = 0; | |
905 | bdrv_get_geometry(bs[0], &bs_sectors); | |
bb1c0597 | 906 | buf = qemu_blockalign(out_bs, IO_BUF_SIZE); |
926c2d23 | 907 | |
eec77d9e | 908 | if (compress) { |
c2abccec MK |
909 | ret = bdrv_get_info(out_bs, &bdi); |
910 | if (ret < 0) { | |
15654a6d | 911 | error_report("could not get block driver info"); |
c2abccec MK |
912 | goto out; |
913 | } | |
faea38e7 | 914 | cluster_size = bdi.cluster_size; |
c2abccec | 915 | if (cluster_size <= 0 || cluster_size > IO_BUF_SIZE) { |
15654a6d | 916 | error_report("invalid cluster size"); |
c2abccec MK |
917 | ret = -1; |
918 | goto out; | |
919 | } | |
ea2384d3 FB |
920 | cluster_sectors = cluster_size >> 9; |
921 | sector_num = 0; | |
6b837bc4 JS |
922 | |
923 | nb_sectors = total_sectors; | |
1f710495 KW |
924 | if (nb_sectors != 0) { |
925 | local_progress = (float)100 / | |
926 | (nb_sectors / MIN(nb_sectors, cluster_sectors)); | |
927 | } | |
6b837bc4 | 928 | |
ea2384d3 | 929 | for(;;) { |
926c2d23 AZ |
930 | int64_t bs_num; |
931 | int remainder; | |
932 | uint8_t *buf2; | |
933 | ||
ea2384d3 FB |
934 | nb_sectors = total_sectors - sector_num; |
935 | if (nb_sectors <= 0) | |
936 | break; | |
937 | if (nb_sectors >= cluster_sectors) | |
938 | n = cluster_sectors; | |
939 | else | |
940 | n = nb_sectors; | |
926c2d23 AZ |
941 | |
942 | bs_num = sector_num - bs_offset; | |
943 | assert (bs_num >= 0); | |
944 | remainder = n; | |
945 | buf2 = buf; | |
946 | while (remainder > 0) { | |
947 | int nlow; | |
948 | while (bs_num == bs_sectors) { | |
949 | bs_i++; | |
950 | assert (bs_i < bs_n); | |
951 | bs_offset += bs_sectors; | |
952 | bdrv_get_geometry(bs[bs_i], &bs_sectors); | |
953 | bs_num = 0; | |
0bfcd599 BS |
954 | /* printf("changing part: sector_num=%" PRId64 ", " |
955 | "bs_i=%d, bs_offset=%" PRId64 ", bs_sectors=%" PRId64 | |
956 | "\n", sector_num, bs_i, bs_offset, bs_sectors); */ | |
926c2d23 AZ |
957 | } |
958 | assert (bs_num < bs_sectors); | |
959 | ||
960 | nlow = (remainder > bs_sectors - bs_num) ? bs_sectors - bs_num : remainder; | |
961 | ||
c2abccec MK |
962 | ret = bdrv_read(bs[bs_i], bs_num, buf2, nlow); |
963 | if (ret < 0) { | |
3fba9d81 SH |
964 | error_report("error while reading sector %" PRId64 ": %s", |
965 | bs_num, strerror(-ret)); | |
c2abccec MK |
966 | goto out; |
967 | } | |
926c2d23 AZ |
968 | |
969 | buf2 += nlow * 512; | |
970 | bs_num += nlow; | |
971 | ||
972 | remainder -= nlow; | |
973 | } | |
974 | assert (remainder == 0); | |
975 | ||
b8fb60da | 976 | if (n < cluster_sectors) { |
ea2384d3 | 977 | memset(buf + n * 512, 0, cluster_size - n * 512); |
b8fb60da | 978 | } |
1a6d39fd | 979 | if (!buffer_is_zero(buf, cluster_size)) { |
c2abccec MK |
980 | ret = bdrv_write_compressed(out_bs, sector_num, buf, |
981 | cluster_sectors); | |
982 | if (ret != 0) { | |
3fba9d81 SH |
983 | error_report("error while compressing sector %" PRId64 |
984 | ": %s", sector_num, strerror(-ret)); | |
c2abccec MK |
985 | goto out; |
986 | } | |
ea2384d3 FB |
987 | } |
988 | sector_num += n; | |
6b837bc4 | 989 | qemu_progress_print(local_progress, 100); |
ea2384d3 | 990 | } |
faea38e7 FB |
991 | /* signal EOF to align */ |
992 | bdrv_write_compressed(out_bs, 0, NULL, 0); | |
ea2384d3 | 993 | } else { |
f2feebbd KW |
994 | int has_zero_init = bdrv_has_zero_init(out_bs); |
995 | ||
f58c7b35 | 996 | sector_num = 0; // total number of sectors converted so far |
6b837bc4 | 997 | nb_sectors = total_sectors - sector_num; |
1f710495 KW |
998 | if (nb_sectors != 0) { |
999 | local_progress = (float)100 / | |
1000 | (nb_sectors / MIN(nb_sectors, IO_BUF_SIZE / 512)); | |
1001 | } | |
6b837bc4 | 1002 | |
ea2384d3 FB |
1003 | for(;;) { |
1004 | nb_sectors = total_sectors - sector_num; | |
b8fb60da | 1005 | if (nb_sectors <= 0) { |
ea2384d3 | 1006 | break; |
b8fb60da JS |
1007 | } |
1008 | if (nb_sectors >= (IO_BUF_SIZE / 512)) { | |
ea2384d3 | 1009 | n = (IO_BUF_SIZE / 512); |
b8fb60da | 1010 | } else { |
ea2384d3 | 1011 | n = nb_sectors; |
b8fb60da | 1012 | } |
926c2d23 AZ |
1013 | |
1014 | while (sector_num - bs_offset >= bs_sectors) { | |
1015 | bs_i ++; | |
1016 | assert (bs_i < bs_n); | |
1017 | bs_offset += bs_sectors; | |
1018 | bdrv_get_geometry(bs[bs_i], &bs_sectors); | |
0bfcd599 BS |
1019 | /* printf("changing part: sector_num=%" PRId64 ", bs_i=%d, " |
1020 | "bs_offset=%" PRId64 ", bs_sectors=%" PRId64 "\n", | |
926c2d23 AZ |
1021 | sector_num, bs_i, bs_offset, bs_sectors); */ |
1022 | } | |
1023 | ||
b8fb60da | 1024 | if (n > bs_offset + bs_sectors - sector_num) { |
926c2d23 | 1025 | n = bs_offset + bs_sectors - sector_num; |
b8fb60da | 1026 | } |
926c2d23 | 1027 | |
f2feebbd | 1028 | if (has_zero_init) { |
d032044f AS |
1029 | /* If the output image is being created as a copy on write image, |
1030 | assume that sectors which are unallocated in the input image | |
1031 | are present in both the output's and input's base images (no | |
1032 | need to copy them). */ | |
1033 | if (out_baseimg) { | |
1034 | if (!bdrv_is_allocated(bs[bs_i], sector_num - bs_offset, | |
1035 | n, &n1)) { | |
1036 | sector_num += n1; | |
1037 | continue; | |
1038 | } | |
1039 | /* The next 'n1' sectors are allocated in the input image. Copy | |
1040 | only those as they may be followed by unallocated sectors. */ | |
1041 | n = n1; | |
93c65b47 | 1042 | } |
93c65b47 AL |
1043 | } else { |
1044 | n1 = n; | |
f58c7b35 TS |
1045 | } |
1046 | ||
c2abccec MK |
1047 | ret = bdrv_read(bs[bs_i], sector_num - bs_offset, buf, n); |
1048 | if (ret < 0) { | |
3fba9d81 SH |
1049 | error_report("error while reading sector %" PRId64 ": %s", |
1050 | sector_num - bs_offset, strerror(-ret)); | |
c2abccec MK |
1051 | goto out; |
1052 | } | |
ea2384d3 FB |
1053 | /* NOTE: at the same time we convert, we do not write zero |
1054 | sectors to have a chance to compress the image. Ideally, we | |
1055 | should add a specific call to have the info to go faster */ | |
1056 | buf1 = buf; | |
1057 | while (n > 0) { | |
f58c7b35 TS |
1058 | /* If the output image is being created as a copy on write image, |
1059 | copy all sectors even the ones containing only NUL bytes, | |
93c65b47 AL |
1060 | because they may differ from the sectors in the base image. |
1061 | ||
1062 | If the output is to a host device, we also write out | |
1063 | sectors that are entirely 0, since whatever data was | |
1064 | already there is garbage, not 0s. */ | |
f2feebbd | 1065 | if (!has_zero_init || out_baseimg || |
a22f123c | 1066 | is_allocated_sectors_min(buf1, n, &n1, min_sparse)) { |
c2abccec MK |
1067 | ret = bdrv_write(out_bs, sector_num, buf1, n1); |
1068 | if (ret < 0) { | |
3fba9d81 SH |
1069 | error_report("error while writing sector %" PRId64 |
1070 | ": %s", sector_num, strerror(-ret)); | |
c2abccec MK |
1071 | goto out; |
1072 | } | |
ea2384d3 FB |
1073 | } |
1074 | sector_num += n1; | |
1075 | n -= n1; | |
1076 | buf1 += n1 * 512; | |
1077 | } | |
6b837bc4 | 1078 | qemu_progress_print(local_progress, 100); |
ea2384d3 FB |
1079 | } |
1080 | } | |
c2abccec | 1081 | out: |
6b837bc4 | 1082 | qemu_progress_end(); |
c2abccec MK |
1083 | free_option_parameters(create_options); |
1084 | free_option_parameters(param); | |
bb1c0597 | 1085 | qemu_vfree(buf); |
c2abccec MK |
1086 | if (out_bs) { |
1087 | bdrv_delete(out_bs); | |
1088 | } | |
31ca34b8 JS |
1089 | if (bs) { |
1090 | for (bs_i = 0; bs_i < bs_n; bs_i++) { | |
1091 | if (bs[bs_i]) { | |
1092 | bdrv_delete(bs[bs_i]); | |
1093 | } | |
c2abccec | 1094 | } |
7267c094 | 1095 | g_free(bs); |
c2abccec | 1096 | } |
c2abccec MK |
1097 | if (ret) { |
1098 | return 1; | |
1099 | } | |
ea2384d3 FB |
1100 | return 0; |
1101 | } | |
1102 | ||
57d1a2b6 | 1103 | |
faea38e7 FB |
1104 | static void dump_snapshots(BlockDriverState *bs) |
1105 | { | |
1106 | QEMUSnapshotInfo *sn_tab, *sn; | |
1107 | int nb_sns, i; | |
1108 | char buf[256]; | |
1109 | ||
1110 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
1111 | if (nb_sns <= 0) | |
1112 | return; | |
1113 | printf("Snapshot list:\n"); | |
1114 | printf("%s\n", bdrv_snapshot_dump(buf, sizeof(buf), NULL)); | |
1115 | for(i = 0; i < nb_sns; i++) { | |
1116 | sn = &sn_tab[i]; | |
1117 | printf("%s\n", bdrv_snapshot_dump(buf, sizeof(buf), sn)); | |
1118 | } | |
7267c094 | 1119 | g_free(sn_tab); |
faea38e7 FB |
1120 | } |
1121 | ||
9699bf0d SH |
1122 | static void dump_json_image_info_list(ImageInfoList *list) |
1123 | { | |
1124 | Error *errp = NULL; | |
1125 | QString *str; | |
1126 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
1127 | QObject *obj; | |
1128 | visit_type_ImageInfoList(qmp_output_get_visitor(ov), | |
1129 | &list, NULL, &errp); | |
1130 | obj = qmp_output_get_qobject(ov); | |
1131 | str = qobject_to_json_pretty(obj); | |
1132 | assert(str != NULL); | |
1133 | printf("%s\n", qstring_get_str(str)); | |
1134 | qobject_decref(obj); | |
1135 | qmp_output_visitor_cleanup(ov); | |
1136 | QDECREF(str); | |
1137 | } | |
1138 | ||
c054b3fd BC |
1139 | static void collect_snapshots(BlockDriverState *bs , ImageInfo *info) |
1140 | { | |
1141 | int i, sn_count; | |
1142 | QEMUSnapshotInfo *sn_tab = NULL; | |
1143 | SnapshotInfoList *info_list, *cur_item = NULL; | |
1144 | sn_count = bdrv_snapshot_list(bs, &sn_tab); | |
1145 | ||
1146 | for (i = 0; i < sn_count; i++) { | |
1147 | info->has_snapshots = true; | |
1148 | info_list = g_new0(SnapshotInfoList, 1); | |
1149 | ||
1150 | info_list->value = g_new0(SnapshotInfo, 1); | |
1151 | info_list->value->id = g_strdup(sn_tab[i].id_str); | |
1152 | info_list->value->name = g_strdup(sn_tab[i].name); | |
1153 | info_list->value->vm_state_size = sn_tab[i].vm_state_size; | |
1154 | info_list->value->date_sec = sn_tab[i].date_sec; | |
1155 | info_list->value->date_nsec = sn_tab[i].date_nsec; | |
1156 | info_list->value->vm_clock_sec = sn_tab[i].vm_clock_nsec / 1000000000; | |
1157 | info_list->value->vm_clock_nsec = sn_tab[i].vm_clock_nsec % 1000000000; | |
1158 | ||
1159 | /* XXX: waiting for the qapi to support qemu-queue.h types */ | |
1160 | if (!cur_item) { | |
1161 | info->snapshots = cur_item = info_list; | |
1162 | } else { | |
1163 | cur_item->next = info_list; | |
1164 | cur_item = info_list; | |
1165 | } | |
1166 | ||
1167 | } | |
1168 | ||
1169 | g_free(sn_tab); | |
1170 | } | |
1171 | ||
1172 | static void dump_json_image_info(ImageInfo *info) | |
1173 | { | |
1174 | Error *errp = NULL; | |
1175 | QString *str; | |
1176 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
1177 | QObject *obj; | |
1178 | visit_type_ImageInfo(qmp_output_get_visitor(ov), | |
1179 | &info, NULL, &errp); | |
1180 | obj = qmp_output_get_qobject(ov); | |
1181 | str = qobject_to_json_pretty(obj); | |
1182 | assert(str != NULL); | |
1183 | printf("%s\n", qstring_get_str(str)); | |
1184 | qobject_decref(obj); | |
1185 | qmp_output_visitor_cleanup(ov); | |
1186 | QDECREF(str); | |
1187 | } | |
1188 | ||
1189 | static void collect_image_info(BlockDriverState *bs, | |
1190 | ImageInfo *info, | |
1191 | const char *filename, | |
1192 | const char *fmt) | |
ea2384d3 | 1193 | { |
96b8f136 | 1194 | uint64_t total_sectors; |
93b6b2a3 FB |
1195 | char backing_filename[1024]; |
1196 | char backing_filename2[1024]; | |
faea38e7 | 1197 | BlockDriverInfo bdi; |
ea2384d3 | 1198 | |
c054b3fd BC |
1199 | bdrv_get_geometry(bs, &total_sectors); |
1200 | ||
1201 | info->filename = g_strdup(filename); | |
1202 | info->format = g_strdup(bdrv_get_format_name(bs)); | |
1203 | info->virtual_size = total_sectors * 512; | |
1204 | info->actual_size = bdrv_get_allocated_file_size(bs); | |
1205 | info->has_actual_size = info->actual_size >= 0; | |
1206 | if (bdrv_is_encrypted(bs)) { | |
1207 | info->encrypted = true; | |
1208 | info->has_encrypted = true; | |
1209 | } | |
1210 | if (bdrv_get_info(bs, &bdi) >= 0) { | |
1211 | if (bdi.cluster_size != 0) { | |
1212 | info->cluster_size = bdi.cluster_size; | |
1213 | info->has_cluster_size = true; | |
1214 | } | |
1215 | info->dirty_flag = bdi.is_dirty; | |
1216 | info->has_dirty_flag = true; | |
1217 | } | |
1218 | bdrv_get_backing_filename(bs, backing_filename, sizeof(backing_filename)); | |
1219 | if (backing_filename[0] != '\0') { | |
1220 | info->backing_filename = g_strdup(backing_filename); | |
1221 | info->has_backing_filename = true; | |
1222 | bdrv_get_full_backing_filename(bs, backing_filename2, | |
1223 | sizeof(backing_filename2)); | |
1224 | ||
1225 | if (strcmp(backing_filename, backing_filename2) != 0) { | |
1226 | info->full_backing_filename = | |
1227 | g_strdup(backing_filename2); | |
1228 | info->has_full_backing_filename = true; | |
1229 | } | |
1230 | ||
1231 | if (bs->backing_format[0]) { | |
1232 | info->backing_filename_format = g_strdup(bs->backing_format); | |
1233 | info->has_backing_filename_format = true; | |
1234 | } | |
1235 | } | |
1236 | } | |
1237 | ||
1238 | static void dump_human_image_info(ImageInfo *info) | |
1239 | { | |
1240 | char size_buf[128], dsize_buf[128]; | |
1241 | if (!info->has_actual_size) { | |
1242 | snprintf(dsize_buf, sizeof(dsize_buf), "unavailable"); | |
1243 | } else { | |
1244 | get_human_readable_size(dsize_buf, sizeof(dsize_buf), | |
1245 | info->actual_size); | |
1246 | } | |
1247 | get_human_readable_size(size_buf, sizeof(size_buf), info->virtual_size); | |
1248 | printf("image: %s\n" | |
1249 | "file format: %s\n" | |
1250 | "virtual size: %s (%" PRId64 " bytes)\n" | |
1251 | "disk size: %s\n", | |
1252 | info->filename, info->format, size_buf, | |
1253 | info->virtual_size, | |
1254 | dsize_buf); | |
1255 | ||
1256 | if (info->has_encrypted && info->encrypted) { | |
1257 | printf("encrypted: yes\n"); | |
1258 | } | |
1259 | ||
1260 | if (info->has_cluster_size) { | |
1261 | printf("cluster_size: %" PRId64 "\n", info->cluster_size); | |
1262 | } | |
1263 | ||
1264 | if (info->has_dirty_flag && info->dirty_flag) { | |
1265 | printf("cleanly shut down: no\n"); | |
1266 | } | |
1267 | ||
1268 | if (info->has_backing_filename) { | |
1269 | printf("backing file: %s", info->backing_filename); | |
1270 | if (info->has_full_backing_filename) { | |
1271 | printf(" (actual path: %s)", info->full_backing_filename); | |
1272 | } | |
1273 | putchar('\n'); | |
1274 | if (info->has_backing_filename_format) { | |
1275 | printf("backing file format: %s\n", info->backing_filename_format); | |
1276 | } | |
1277 | } | |
9699bf0d SH |
1278 | |
1279 | if (info->has_snapshots) { | |
1280 | SnapshotInfoList *elem; | |
1281 | char buf[256]; | |
1282 | ||
1283 | printf("Snapshot list:\n"); | |
1284 | printf("%s\n", bdrv_snapshot_dump(buf, sizeof(buf), NULL)); | |
1285 | ||
1286 | /* Ideally bdrv_snapshot_dump() would operate on SnapshotInfoList but | |
1287 | * we convert to the block layer's native QEMUSnapshotInfo for now. | |
1288 | */ | |
1289 | for (elem = info->snapshots; elem; elem = elem->next) { | |
1290 | QEMUSnapshotInfo sn = { | |
1291 | .vm_state_size = elem->value->vm_state_size, | |
1292 | .date_sec = elem->value->date_sec, | |
1293 | .date_nsec = elem->value->date_nsec, | |
1294 | .vm_clock_nsec = elem->value->vm_clock_sec * 1000000000ULL + | |
1295 | elem->value->vm_clock_nsec, | |
1296 | }; | |
1297 | ||
1298 | pstrcpy(sn.id_str, sizeof(sn.id_str), elem->value->id); | |
1299 | pstrcpy(sn.name, sizeof(sn.name), elem->value->name); | |
1300 | printf("%s\n", bdrv_snapshot_dump(buf, sizeof(buf), &sn)); | |
1301 | } | |
1302 | } | |
c054b3fd BC |
1303 | } |
1304 | ||
9699bf0d SH |
1305 | static void dump_human_image_info_list(ImageInfoList *list) |
1306 | { | |
1307 | ImageInfoList *elem; | |
1308 | bool delim = false; | |
1309 | ||
1310 | for (elem = list; elem; elem = elem->next) { | |
1311 | if (delim) { | |
1312 | printf("\n"); | |
1313 | } | |
1314 | delim = true; | |
1315 | ||
1316 | dump_human_image_info(elem->value); | |
1317 | } | |
1318 | } | |
1319 | ||
1320 | static gboolean str_equal_func(gconstpointer a, gconstpointer b) | |
1321 | { | |
1322 | return strcmp(a, b) == 0; | |
1323 | } | |
1324 | ||
1325 | /** | |
1326 | * Open an image file chain and return an ImageInfoList | |
1327 | * | |
1328 | * @filename: topmost image filename | |
1329 | * @fmt: topmost image format (may be NULL to autodetect) | |
1330 | * @chain: true - enumerate entire backing file chain | |
1331 | * false - only topmost image file | |
1332 | * | |
1333 | * Returns a list of ImageInfo objects or NULL if there was an error opening an | |
1334 | * image file. If there was an error a message will have been printed to | |
1335 | * stderr. | |
1336 | */ | |
1337 | static ImageInfoList *collect_image_info_list(const char *filename, | |
1338 | const char *fmt, | |
1339 | bool chain) | |
1340 | { | |
1341 | ImageInfoList *head = NULL; | |
1342 | ImageInfoList **last = &head; | |
1343 | GHashTable *filenames; | |
1344 | ||
1345 | filenames = g_hash_table_new_full(g_str_hash, str_equal_func, NULL, NULL); | |
1346 | ||
1347 | while (filename) { | |
1348 | BlockDriverState *bs; | |
1349 | ImageInfo *info; | |
1350 | ImageInfoList *elem; | |
1351 | ||
1352 | if (g_hash_table_lookup_extended(filenames, filename, NULL, NULL)) { | |
1353 | error_report("Backing file '%s' creates an infinite loop.", | |
1354 | filename); | |
1355 | goto err; | |
1356 | } | |
1357 | g_hash_table_insert(filenames, (gpointer)filename, NULL); | |
1358 | ||
1359 | bs = bdrv_new_open(filename, fmt, BDRV_O_FLAGS | BDRV_O_NO_BACKING, | |
1360 | false); | |
1361 | if (!bs) { | |
1362 | goto err; | |
1363 | } | |
1364 | ||
1365 | info = g_new0(ImageInfo, 1); | |
1366 | collect_image_info(bs, info, filename, fmt); | |
1367 | collect_snapshots(bs, info); | |
1368 | ||
1369 | elem = g_new0(ImageInfoList, 1); | |
1370 | elem->value = info; | |
1371 | *last = elem; | |
1372 | last = &elem->next; | |
1373 | ||
1374 | bdrv_delete(bs); | |
1375 | ||
1376 | filename = fmt = NULL; | |
1377 | if (chain) { | |
1378 | if (info->has_full_backing_filename) { | |
1379 | filename = info->full_backing_filename; | |
1380 | } else if (info->has_backing_filename) { | |
1381 | filename = info->backing_filename; | |
1382 | } | |
1383 | if (info->has_backing_filename_format) { | |
1384 | fmt = info->backing_filename_format; | |
1385 | } | |
1386 | } | |
1387 | } | |
1388 | g_hash_table_destroy(filenames); | |
1389 | return head; | |
1390 | ||
1391 | err: | |
1392 | qapi_free_ImageInfoList(head); | |
1393 | g_hash_table_destroy(filenames); | |
1394 | return NULL; | |
1395 | } | |
1396 | ||
1397 | enum { | |
1398 | OPTION_OUTPUT = 256, | |
1399 | OPTION_BACKING_CHAIN = 257, | |
1400 | }; | |
c054b3fd BC |
1401 | |
1402 | typedef enum OutputFormat { | |
1403 | OFORMAT_JSON, | |
1404 | OFORMAT_HUMAN, | |
1405 | } OutputFormat; | |
1406 | ||
1407 | static int img_info(int argc, char **argv) | |
1408 | { | |
1409 | int c; | |
1410 | OutputFormat output_format = OFORMAT_HUMAN; | |
9699bf0d | 1411 | bool chain = false; |
c054b3fd | 1412 | const char *filename, *fmt, *output; |
9699bf0d | 1413 | ImageInfoList *list; |
c054b3fd | 1414 | |
ea2384d3 | 1415 | fmt = NULL; |
c054b3fd | 1416 | output = NULL; |
ea2384d3 | 1417 | for(;;) { |
c054b3fd BC |
1418 | int option_index = 0; |
1419 | static const struct option long_options[] = { | |
1420 | {"help", no_argument, 0, 'h'}, | |
1421 | {"format", required_argument, 0, 'f'}, | |
1422 | {"output", required_argument, 0, OPTION_OUTPUT}, | |
9699bf0d | 1423 | {"backing-chain", no_argument, 0, OPTION_BACKING_CHAIN}, |
c054b3fd BC |
1424 | {0, 0, 0, 0} |
1425 | }; | |
1426 | c = getopt_long(argc, argv, "f:h", | |
1427 | long_options, &option_index); | |
b8fb60da | 1428 | if (c == -1) { |
ea2384d3 | 1429 | break; |
b8fb60da | 1430 | } |
ea2384d3 | 1431 | switch(c) { |
ef87394c | 1432 | case '?': |
ea2384d3 FB |
1433 | case 'h': |
1434 | help(); | |
1435 | break; | |
1436 | case 'f': | |
1437 | fmt = optarg; | |
1438 | break; | |
c054b3fd BC |
1439 | case OPTION_OUTPUT: |
1440 | output = optarg; | |
1441 | break; | |
9699bf0d SH |
1442 | case OPTION_BACKING_CHAIN: |
1443 | chain = true; | |
1444 | break; | |
ea2384d3 FB |
1445 | } |
1446 | } | |
b8fb60da | 1447 | if (optind >= argc) { |
ea2384d3 | 1448 | help(); |
b8fb60da | 1449 | } |
ea2384d3 FB |
1450 | filename = argv[optind++]; |
1451 | ||
c054b3fd BC |
1452 | if (output && !strcmp(output, "json")) { |
1453 | output_format = OFORMAT_JSON; | |
1454 | } else if (output && !strcmp(output, "human")) { | |
1455 | output_format = OFORMAT_HUMAN; | |
1456 | } else if (output) { | |
1457 | error_report("--output must be used with human or json as argument."); | |
c2abccec MK |
1458 | return 1; |
1459 | } | |
c054b3fd | 1460 | |
9699bf0d SH |
1461 | list = collect_image_info_list(filename, fmt, chain); |
1462 | if (!list) { | |
c2abccec | 1463 | return 1; |
faea38e7 | 1464 | } |
c054b3fd | 1465 | |
c054b3fd BC |
1466 | switch (output_format) { |
1467 | case OFORMAT_HUMAN: | |
9699bf0d | 1468 | dump_human_image_info_list(list); |
c054b3fd BC |
1469 | break; |
1470 | case OFORMAT_JSON: | |
9699bf0d SH |
1471 | if (chain) { |
1472 | dump_json_image_info_list(list); | |
1473 | } else { | |
1474 | dump_json_image_info(list->value); | |
1475 | } | |
c054b3fd | 1476 | break; |
faea38e7 | 1477 | } |
c054b3fd | 1478 | |
9699bf0d | 1479 | qapi_free_ImageInfoList(list); |
ea2384d3 FB |
1480 | return 0; |
1481 | } | |
1482 | ||
f7b4a940 AL |
1483 | #define SNAPSHOT_LIST 1 |
1484 | #define SNAPSHOT_CREATE 2 | |
1485 | #define SNAPSHOT_APPLY 3 | |
1486 | #define SNAPSHOT_DELETE 4 | |
1487 | ||
153859be | 1488 | static int img_snapshot(int argc, char **argv) |
f7b4a940 AL |
1489 | { |
1490 | BlockDriverState *bs; | |
1491 | QEMUSnapshotInfo sn; | |
1492 | char *filename, *snapshot_name = NULL; | |
c2abccec | 1493 | int c, ret = 0, bdrv_oflags; |
f7b4a940 AL |
1494 | int action = 0; |
1495 | qemu_timeval tv; | |
1496 | ||
710da702 | 1497 | bdrv_oflags = BDRV_O_FLAGS | BDRV_O_RDWR; |
f7b4a940 AL |
1498 | /* Parse commandline parameters */ |
1499 | for(;;) { | |
1500 | c = getopt(argc, argv, "la:c:d:h"); | |
b8fb60da | 1501 | if (c == -1) { |
f7b4a940 | 1502 | break; |
b8fb60da | 1503 | } |
f7b4a940 | 1504 | switch(c) { |
ef87394c | 1505 | case '?': |
f7b4a940 AL |
1506 | case 'h': |
1507 | help(); | |
153859be | 1508 | return 0; |
f7b4a940 AL |
1509 | case 'l': |
1510 | if (action) { | |
1511 | help(); | |
153859be | 1512 | return 0; |
f7b4a940 AL |
1513 | } |
1514 | action = SNAPSHOT_LIST; | |
f5edb014 | 1515 | bdrv_oflags &= ~BDRV_O_RDWR; /* no need for RW */ |
f7b4a940 AL |
1516 | break; |
1517 | case 'a': | |
1518 | if (action) { | |
1519 | help(); | |
153859be | 1520 | return 0; |
f7b4a940 AL |
1521 | } |
1522 | action = SNAPSHOT_APPLY; | |
1523 | snapshot_name = optarg; | |
1524 | break; | |
1525 | case 'c': | |
1526 | if (action) { | |
1527 | help(); | |
153859be | 1528 | return 0; |
f7b4a940 AL |
1529 | } |
1530 | action = SNAPSHOT_CREATE; | |
1531 | snapshot_name = optarg; | |
1532 | break; | |
1533 | case 'd': | |
1534 | if (action) { | |
1535 | help(); | |
153859be | 1536 | return 0; |
f7b4a940 AL |
1537 | } |
1538 | action = SNAPSHOT_DELETE; | |
1539 | snapshot_name = optarg; | |
1540 | break; | |
1541 | } | |
1542 | } | |
1543 | ||
b8fb60da | 1544 | if (optind >= argc) { |
f7b4a940 | 1545 | help(); |
b8fb60da | 1546 | } |
f7b4a940 AL |
1547 | filename = argv[optind++]; |
1548 | ||
1549 | /* Open the image */ | |
f0536bb8 | 1550 | bs = bdrv_new_open(filename, NULL, bdrv_oflags, true); |
c2abccec MK |
1551 | if (!bs) { |
1552 | return 1; | |
1553 | } | |
f7b4a940 AL |
1554 | |
1555 | /* Perform the requested action */ | |
1556 | switch(action) { | |
1557 | case SNAPSHOT_LIST: | |
1558 | dump_snapshots(bs); | |
1559 | break; | |
1560 | ||
1561 | case SNAPSHOT_CREATE: | |
1562 | memset(&sn, 0, sizeof(sn)); | |
1563 | pstrcpy(sn.name, sizeof(sn.name), snapshot_name); | |
1564 | ||
1565 | qemu_gettimeofday(&tv); | |
1566 | sn.date_sec = tv.tv_sec; | |
1567 | sn.date_nsec = tv.tv_usec * 1000; | |
1568 | ||
1569 | ret = bdrv_snapshot_create(bs, &sn); | |
b8fb60da | 1570 | if (ret) { |
15654a6d | 1571 | error_report("Could not create snapshot '%s': %d (%s)", |
f7b4a940 | 1572 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 1573 | } |
f7b4a940 AL |
1574 | break; |
1575 | ||
1576 | case SNAPSHOT_APPLY: | |
1577 | ret = bdrv_snapshot_goto(bs, snapshot_name); | |
b8fb60da | 1578 | if (ret) { |
15654a6d | 1579 | error_report("Could not apply snapshot '%s': %d (%s)", |
f7b4a940 | 1580 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 1581 | } |
f7b4a940 AL |
1582 | break; |
1583 | ||
1584 | case SNAPSHOT_DELETE: | |
1585 | ret = bdrv_snapshot_delete(bs, snapshot_name); | |
b8fb60da | 1586 | if (ret) { |
15654a6d | 1587 | error_report("Could not delete snapshot '%s': %d (%s)", |
f7b4a940 | 1588 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 1589 | } |
f7b4a940 AL |
1590 | break; |
1591 | } | |
1592 | ||
1593 | /* Cleanup */ | |
1594 | bdrv_delete(bs); | |
c2abccec MK |
1595 | if (ret) { |
1596 | return 1; | |
1597 | } | |
153859be | 1598 | return 0; |
f7b4a940 AL |
1599 | } |
1600 | ||
3e85c6fd KW |
1601 | static int img_rebase(int argc, char **argv) |
1602 | { | |
c2abccec | 1603 | BlockDriverState *bs, *bs_old_backing = NULL, *bs_new_backing = NULL; |
f163d073 | 1604 | BlockDriver *old_backing_drv, *new_backing_drv; |
3e85c6fd | 1605 | char *filename; |
661a0f71 | 1606 | const char *fmt, *cache, *out_basefmt, *out_baseimg; |
3e85c6fd KW |
1607 | int c, flags, ret; |
1608 | int unsafe = 0; | |
6b837bc4 | 1609 | int progress = 0; |
3e85c6fd KW |
1610 | |
1611 | /* Parse commandline parameters */ | |
e53dbee0 | 1612 | fmt = NULL; |
661a0f71 | 1613 | cache = BDRV_DEFAULT_CACHE; |
3e85c6fd KW |
1614 | out_baseimg = NULL; |
1615 | out_basefmt = NULL; | |
3e85c6fd | 1616 | for(;;) { |
661a0f71 | 1617 | c = getopt(argc, argv, "uhf:F:b:pt:"); |
b8fb60da | 1618 | if (c == -1) { |
3e85c6fd | 1619 | break; |
b8fb60da | 1620 | } |
3e85c6fd | 1621 | switch(c) { |
ef87394c | 1622 | case '?': |
3e85c6fd KW |
1623 | case 'h': |
1624 | help(); | |
1625 | return 0; | |
e53dbee0 KW |
1626 | case 'f': |
1627 | fmt = optarg; | |
1628 | break; | |
3e85c6fd KW |
1629 | case 'F': |
1630 | out_basefmt = optarg; | |
1631 | break; | |
1632 | case 'b': | |
1633 | out_baseimg = optarg; | |
1634 | break; | |
1635 | case 'u': | |
1636 | unsafe = 1; | |
1637 | break; | |
6b837bc4 JS |
1638 | case 'p': |
1639 | progress = 1; | |
1640 | break; | |
661a0f71 FS |
1641 | case 't': |
1642 | cache = optarg; | |
1643 | break; | |
3e85c6fd KW |
1644 | } |
1645 | } | |
1646 | ||
9a9d9dba | 1647 | if ((optind >= argc) || (!unsafe && !out_baseimg)) { |
3e85c6fd | 1648 | help(); |
b8fb60da | 1649 | } |
3e85c6fd KW |
1650 | filename = argv[optind++]; |
1651 | ||
6b837bc4 JS |
1652 | qemu_progress_init(progress, 2.0); |
1653 | qemu_progress_print(0, 100); | |
1654 | ||
661a0f71 | 1655 | flags = BDRV_O_RDWR | (unsafe ? BDRV_O_NO_BACKING : 0); |
c3993cdc | 1656 | ret = bdrv_parse_cache_flags(cache, &flags); |
661a0f71 FS |
1657 | if (ret < 0) { |
1658 | error_report("Invalid cache option: %s", cache); | |
1659 | return -1; | |
1660 | } | |
1661 | ||
3e85c6fd KW |
1662 | /* |
1663 | * Open the images. | |
1664 | * | |
1665 | * Ignore the old backing file for unsafe rebase in case we want to correct | |
1666 | * the reference to a renamed or moved backing file. | |
1667 | */ | |
f0536bb8 | 1668 | bs = bdrv_new_open(filename, fmt, flags, true); |
c2abccec MK |
1669 | if (!bs) { |
1670 | return 1; | |
1671 | } | |
3e85c6fd KW |
1672 | |
1673 | /* Find the right drivers for the backing files */ | |
1674 | old_backing_drv = NULL; | |
1675 | new_backing_drv = NULL; | |
1676 | ||
1677 | if (!unsafe && bs->backing_format[0] != '\0') { | |
1678 | old_backing_drv = bdrv_find_format(bs->backing_format); | |
1679 | if (old_backing_drv == NULL) { | |
15654a6d | 1680 | error_report("Invalid format name: '%s'", bs->backing_format); |
c2abccec MK |
1681 | ret = -1; |
1682 | goto out; | |
3e85c6fd KW |
1683 | } |
1684 | } | |
1685 | ||
1686 | if (out_basefmt != NULL) { | |
1687 | new_backing_drv = bdrv_find_format(out_basefmt); | |
1688 | if (new_backing_drv == NULL) { | |
15654a6d | 1689 | error_report("Invalid format name: '%s'", out_basefmt); |
c2abccec MK |
1690 | ret = -1; |
1691 | goto out; | |
3e85c6fd KW |
1692 | } |
1693 | } | |
1694 | ||
1695 | /* For safe rebasing we need to compare old and new backing file */ | |
1696 | if (unsafe) { | |
1697 | /* Make the compiler happy */ | |
1698 | bs_old_backing = NULL; | |
1699 | bs_new_backing = NULL; | |
1700 | } else { | |
1701 | char backing_name[1024]; | |
1702 | ||
1703 | bs_old_backing = bdrv_new("old_backing"); | |
1704 | bdrv_get_backing_filename(bs, backing_name, sizeof(backing_name)); | |
c2abccec MK |
1705 | ret = bdrv_open(bs_old_backing, backing_name, BDRV_O_FLAGS, |
1706 | old_backing_drv); | |
1707 | if (ret) { | |
15654a6d | 1708 | error_report("Could not open old backing file '%s'", backing_name); |
c2abccec | 1709 | goto out; |
3e85c6fd | 1710 | } |
a616673d AB |
1711 | if (out_baseimg[0]) { |
1712 | bs_new_backing = bdrv_new("new_backing"); | |
1713 | ret = bdrv_open(bs_new_backing, out_baseimg, BDRV_O_FLAGS, | |
c2abccec | 1714 | new_backing_drv); |
a616673d AB |
1715 | if (ret) { |
1716 | error_report("Could not open new backing file '%s'", | |
1717 | out_baseimg); | |
1718 | goto out; | |
1719 | } | |
3e85c6fd KW |
1720 | } |
1721 | } | |
1722 | ||
1723 | /* | |
1724 | * Check each unallocated cluster in the COW file. If it is unallocated, | |
1725 | * accesses go to the backing file. We must therefore compare this cluster | |
1726 | * in the old and new backing file, and if they differ we need to copy it | |
1727 | * from the old backing file into the COW file. | |
1728 | * | |
1729 | * If qemu-img crashes during this step, no harm is done. The content of | |
1730 | * the image is the same as the original one at any time. | |
1731 | */ | |
1732 | if (!unsafe) { | |
1733 | uint64_t num_sectors; | |
87a1b3e3 | 1734 | uint64_t old_backing_num_sectors; |
a616673d | 1735 | uint64_t new_backing_num_sectors = 0; |
3e85c6fd | 1736 | uint64_t sector; |
cc60e327 | 1737 | int n; |
d6771bfa T |
1738 | uint8_t * buf_old; |
1739 | uint8_t * buf_new; | |
1f710495 | 1740 | float local_progress = 0; |
d6771bfa | 1741 | |
bb1c0597 KW |
1742 | buf_old = qemu_blockalign(bs, IO_BUF_SIZE); |
1743 | buf_new = qemu_blockalign(bs, IO_BUF_SIZE); | |
3e85c6fd KW |
1744 | |
1745 | bdrv_get_geometry(bs, &num_sectors); | |
87a1b3e3 | 1746 | bdrv_get_geometry(bs_old_backing, &old_backing_num_sectors); |
a616673d AB |
1747 | if (bs_new_backing) { |
1748 | bdrv_get_geometry(bs_new_backing, &new_backing_num_sectors); | |
1749 | } | |
3e85c6fd | 1750 | |
1f710495 KW |
1751 | if (num_sectors != 0) { |
1752 | local_progress = (float)100 / | |
1753 | (num_sectors / MIN(num_sectors, IO_BUF_SIZE / 512)); | |
1754 | } | |
1755 | ||
3e85c6fd KW |
1756 | for (sector = 0; sector < num_sectors; sector += n) { |
1757 | ||
1758 | /* How many sectors can we handle with the next read? */ | |
1759 | if (sector + (IO_BUF_SIZE / 512) <= num_sectors) { | |
1760 | n = (IO_BUF_SIZE / 512); | |
1761 | } else { | |
1762 | n = num_sectors - sector; | |
1763 | } | |
1764 | ||
1765 | /* If the cluster is allocated, we don't need to take action */ | |
cc60e327 KW |
1766 | ret = bdrv_is_allocated(bs, sector, n, &n); |
1767 | if (ret) { | |
3e85c6fd KW |
1768 | continue; |
1769 | } | |
1770 | ||
87a1b3e3 KW |
1771 | /* |
1772 | * Read old and new backing file and take into consideration that | |
1773 | * backing files may be smaller than the COW image. | |
1774 | */ | |
1775 | if (sector >= old_backing_num_sectors) { | |
1776 | memset(buf_old, 0, n * BDRV_SECTOR_SIZE); | |
1777 | } else { | |
1778 | if (sector + n > old_backing_num_sectors) { | |
1779 | n = old_backing_num_sectors - sector; | |
1780 | } | |
1781 | ||
1782 | ret = bdrv_read(bs_old_backing, sector, buf_old, n); | |
1783 | if (ret < 0) { | |
1784 | error_report("error while reading from old backing file"); | |
1785 | goto out; | |
1786 | } | |
3e85c6fd | 1787 | } |
87a1b3e3 | 1788 | |
a616673d | 1789 | if (sector >= new_backing_num_sectors || !bs_new_backing) { |
87a1b3e3 KW |
1790 | memset(buf_new, 0, n * BDRV_SECTOR_SIZE); |
1791 | } else { | |
1792 | if (sector + n > new_backing_num_sectors) { | |
1793 | n = new_backing_num_sectors - sector; | |
1794 | } | |
1795 | ||
1796 | ret = bdrv_read(bs_new_backing, sector, buf_new, n); | |
1797 | if (ret < 0) { | |
1798 | error_report("error while reading from new backing file"); | |
1799 | goto out; | |
1800 | } | |
3e85c6fd KW |
1801 | } |
1802 | ||
1803 | /* If they differ, we need to write to the COW file */ | |
1804 | uint64_t written = 0; | |
1805 | ||
1806 | while (written < n) { | |
1807 | int pnum; | |
1808 | ||
1809 | if (compare_sectors(buf_old + written * 512, | |
60b1bd4f | 1810 | buf_new + written * 512, n - written, &pnum)) |
3e85c6fd KW |
1811 | { |
1812 | ret = bdrv_write(bs, sector + written, | |
1813 | buf_old + written * 512, pnum); | |
1814 | if (ret < 0) { | |
15654a6d | 1815 | error_report("Error while writing to COW image: %s", |
3e85c6fd | 1816 | strerror(-ret)); |
c2abccec | 1817 | goto out; |
3e85c6fd KW |
1818 | } |
1819 | } | |
1820 | ||
1821 | written += pnum; | |
1822 | } | |
6b837bc4 | 1823 | qemu_progress_print(local_progress, 100); |
3e85c6fd | 1824 | } |
d6771bfa | 1825 | |
bb1c0597 KW |
1826 | qemu_vfree(buf_old); |
1827 | qemu_vfree(buf_new); | |
3e85c6fd KW |
1828 | } |
1829 | ||
1830 | /* | |
1831 | * Change the backing file. All clusters that are different from the old | |
1832 | * backing file are overwritten in the COW file now, so the visible content | |
1833 | * doesn't change when we switch the backing file. | |
1834 | */ | |
a616673d AB |
1835 | if (out_baseimg && *out_baseimg) { |
1836 | ret = bdrv_change_backing_file(bs, out_baseimg, out_basefmt); | |
1837 | } else { | |
1838 | ret = bdrv_change_backing_file(bs, NULL, NULL); | |
1839 | } | |
1840 | ||
3e85c6fd | 1841 | if (ret == -ENOSPC) { |
15654a6d JS |
1842 | error_report("Could not change the backing file to '%s': No " |
1843 | "space left in the file header", out_baseimg); | |
3e85c6fd | 1844 | } else if (ret < 0) { |
15654a6d | 1845 | error_report("Could not change the backing file to '%s': %s", |
3e85c6fd KW |
1846 | out_baseimg, strerror(-ret)); |
1847 | } | |
1848 | ||
6b837bc4 | 1849 | qemu_progress_print(100, 0); |
3e85c6fd KW |
1850 | /* |
1851 | * TODO At this point it is possible to check if any clusters that are | |
1852 | * allocated in the COW file are the same in the backing file. If so, they | |
1853 | * could be dropped from the COW file. Don't do this before switching the | |
1854 | * backing file, in case of a crash this would lead to corruption. | |
1855 | */ | |
c2abccec | 1856 | out: |
6b837bc4 | 1857 | qemu_progress_end(); |
3e85c6fd KW |
1858 | /* Cleanup */ |
1859 | if (!unsafe) { | |
eb863add KW |
1860 | if (bs_old_backing != NULL) { |
1861 | bdrv_delete(bs_old_backing); | |
1862 | } | |
1863 | if (bs_new_backing != NULL) { | |
1864 | bdrv_delete(bs_new_backing); | |
1865 | } | |
3e85c6fd KW |
1866 | } |
1867 | ||
1868 | bdrv_delete(bs); | |
c2abccec MK |
1869 | if (ret) { |
1870 | return 1; | |
1871 | } | |
3e85c6fd KW |
1872 | return 0; |
1873 | } | |
1874 | ||
ae6b0ed6 SH |
1875 | static int img_resize(int argc, char **argv) |
1876 | { | |
1877 | int c, ret, relative; | |
1878 | const char *filename, *fmt, *size; | |
1879 | int64_t n, total_size; | |
2a81998a | 1880 | BlockDriverState *bs = NULL; |
20caf0f7 DXW |
1881 | QemuOpts *param; |
1882 | static QemuOptsList resize_options = { | |
1883 | .name = "resize_options", | |
1884 | .head = QTAILQ_HEAD_INITIALIZER(resize_options.head), | |
1885 | .desc = { | |
1886 | { | |
1887 | .name = BLOCK_OPT_SIZE, | |
1888 | .type = QEMU_OPT_SIZE, | |
1889 | .help = "Virtual disk size" | |
1890 | }, { | |
1891 | /* end of list */ | |
1892 | } | |
ae6b0ed6 | 1893 | }, |
ae6b0ed6 SH |
1894 | }; |
1895 | ||
e80fec7f KW |
1896 | /* Remove size from argv manually so that negative numbers are not treated |
1897 | * as options by getopt. */ | |
1898 | if (argc < 3) { | |
1899 | help(); | |
1900 | return 1; | |
1901 | } | |
1902 | ||
1903 | size = argv[--argc]; | |
1904 | ||
1905 | /* Parse getopt arguments */ | |
ae6b0ed6 SH |
1906 | fmt = NULL; |
1907 | for(;;) { | |
1908 | c = getopt(argc, argv, "f:h"); | |
1909 | if (c == -1) { | |
1910 | break; | |
1911 | } | |
1912 | switch(c) { | |
ef87394c | 1913 | case '?': |
ae6b0ed6 SH |
1914 | case 'h': |
1915 | help(); | |
1916 | break; | |
1917 | case 'f': | |
1918 | fmt = optarg; | |
1919 | break; | |
1920 | } | |
1921 | } | |
e80fec7f | 1922 | if (optind >= argc) { |
ae6b0ed6 SH |
1923 | help(); |
1924 | } | |
1925 | filename = argv[optind++]; | |
ae6b0ed6 SH |
1926 | |
1927 | /* Choose grow, shrink, or absolute resize mode */ | |
1928 | switch (size[0]) { | |
1929 | case '+': | |
1930 | relative = 1; | |
1931 | size++; | |
1932 | break; | |
1933 | case '-': | |
1934 | relative = -1; | |
1935 | size++; | |
1936 | break; | |
1937 | default: | |
1938 | relative = 0; | |
1939 | break; | |
1940 | } | |
1941 | ||
1942 | /* Parse size */ | |
20caf0f7 DXW |
1943 | param = qemu_opts_create(&resize_options, NULL, 0, NULL); |
1944 | if (qemu_opt_set(param, BLOCK_OPT_SIZE, size)) { | |
ae6b0ed6 | 1945 | /* Error message already printed when size parsing fails */ |
2a81998a | 1946 | ret = -1; |
20caf0f7 | 1947 | qemu_opts_del(param); |
2a81998a | 1948 | goto out; |
ae6b0ed6 | 1949 | } |
20caf0f7 DXW |
1950 | n = qemu_opt_get_size(param, BLOCK_OPT_SIZE, 0); |
1951 | qemu_opts_del(param); | |
ae6b0ed6 | 1952 | |
f0536bb8 | 1953 | bs = bdrv_new_open(filename, fmt, BDRV_O_FLAGS | BDRV_O_RDWR, true); |
c2abccec | 1954 | if (!bs) { |
2a81998a JS |
1955 | ret = -1; |
1956 | goto out; | |
c2abccec | 1957 | } |
ae6b0ed6 SH |
1958 | |
1959 | if (relative) { | |
1960 | total_size = bdrv_getlength(bs) + n * relative; | |
1961 | } else { | |
1962 | total_size = n; | |
1963 | } | |
1964 | if (total_size <= 0) { | |
15654a6d | 1965 | error_report("New image size must be positive"); |
c2abccec MK |
1966 | ret = -1; |
1967 | goto out; | |
ae6b0ed6 SH |
1968 | } |
1969 | ||
1970 | ret = bdrv_truncate(bs, total_size); | |
1971 | switch (ret) { | |
1972 | case 0: | |
1973 | printf("Image resized.\n"); | |
1974 | break; | |
1975 | case -ENOTSUP: | |
259b2173 | 1976 | error_report("This image does not support resize"); |
ae6b0ed6 SH |
1977 | break; |
1978 | case -EACCES: | |
15654a6d | 1979 | error_report("Image is read-only"); |
ae6b0ed6 SH |
1980 | break; |
1981 | default: | |
15654a6d | 1982 | error_report("Error resizing image (%d)", -ret); |
ae6b0ed6 SH |
1983 | break; |
1984 | } | |
c2abccec | 1985 | out: |
2a81998a JS |
1986 | if (bs) { |
1987 | bdrv_delete(bs); | |
1988 | } | |
c2abccec MK |
1989 | if (ret) { |
1990 | return 1; | |
1991 | } | |
ae6b0ed6 SH |
1992 | return 0; |
1993 | } | |
1994 | ||
c227f099 | 1995 | static const img_cmd_t img_cmds[] = { |
153859be SB |
1996 | #define DEF(option, callback, arg_string) \ |
1997 | { option, callback }, | |
1998 | #include "qemu-img-cmds.h" | |
1999 | #undef DEF | |
2000 | #undef GEN_DOCS | |
2001 | { NULL, NULL, }, | |
2002 | }; | |
2003 | ||
ea2384d3 FB |
2004 | int main(int argc, char **argv) |
2005 | { | |
c227f099 | 2006 | const img_cmd_t *cmd; |
153859be | 2007 | const char *cmdname; |
ea2384d3 | 2008 | |
53f76e58 KW |
2009 | error_set_progname(argv[0]); |
2010 | ||
2592c59a | 2011 | qemu_init_main_loop(); |
ea2384d3 FB |
2012 | bdrv_init(); |
2013 | if (argc < 2) | |
2014 | help(); | |
153859be | 2015 | cmdname = argv[1]; |
8f9b157e | 2016 | argc--; argv++; |
153859be SB |
2017 | |
2018 | /* find the command */ | |
2019 | for(cmd = img_cmds; cmd->name != NULL; cmd++) { | |
2020 | if (!strcmp(cmdname, cmd->name)) { | |
2021 | return cmd->handler(argc, argv); | |
2022 | } | |
ea2384d3 | 2023 | } |
153859be SB |
2024 | |
2025 | /* not found */ | |
2026 | help(); | |
ea2384d3 FB |
2027 | return 0; |
2028 | } |