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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" | |
7b1b5d19 | 26 | #include "qapi/qmp/qjson.h" |
faf07963 | 27 | #include "qemu-common.h" |
1de7afc9 PB |
28 | #include "qemu/option.h" |
29 | #include "qemu/error-report.h" | |
30 | #include "qemu/osdep.h" | |
9c17d615 | 31 | #include "sysemu/sysemu.h" |
737e150e | 32 | #include "block/block_int.h" |
f364ec65 | 33 | #include "block/qapi.h" |
c054b3fd | 34 | #include <getopt.h> |
9230eaf6 | 35 | #include <stdio.h> |
f382d43a | 36 | #include <stdarg.h> |
ea2384d3 | 37 | |
e8445331 FB |
38 | #ifdef _WIN32 |
39 | #include <windows.h> | |
40 | #endif | |
41 | ||
c227f099 | 42 | typedef struct img_cmd_t { |
153859be SB |
43 | const char *name; |
44 | int (*handler)(int argc, char **argv); | |
c227f099 | 45 | } img_cmd_t; |
153859be | 46 | |
8599ea4c FS |
47 | enum { |
48 | OPTION_OUTPUT = 256, | |
49 | OPTION_BACKING_CHAIN = 257, | |
50 | }; | |
51 | ||
52 | typedef enum OutputFormat { | |
53 | OFORMAT_JSON, | |
54 | OFORMAT_HUMAN, | |
55 | } OutputFormat; | |
56 | ||
137519ce | 57 | /* Default to cache=writeback as data integrity is not important for qemu-tcg. */ |
adfe078e | 58 | #define BDRV_O_FLAGS BDRV_O_CACHE_WB |
661a0f71 | 59 | #define BDRV_DEFAULT_CACHE "writeback" |
137519ce | 60 | |
ea2384d3 FB |
61 | static void format_print(void *opaque, const char *name) |
62 | { | |
63 | printf(" %s", name); | |
64 | } | |
65 | ||
d2c639d6 | 66 | /* Please keep in synch with qemu-img.texi */ |
3f379ab1 | 67 | static void help(void) |
ea2384d3 | 68 | { |
e00291c0 PB |
69 | const char *help_msg = |
70 | "qemu-img version " QEMU_VERSION ", Copyright (c) 2004-2008 Fabrice Bellard\n" | |
3f020d70 | 71 | "usage: qemu-img command [command options]\n" |
72 | "QEMU disk image utility\n" | |
73 | "\n" | |
74 | "Command syntax:\n" | |
153859be SB |
75 | #define DEF(option, callback, arg_string) \ |
76 | " " arg_string "\n" | |
77 | #include "qemu-img-cmds.h" | |
78 | #undef DEF | |
79 | #undef GEN_DOCS | |
3f020d70 | 80 | "\n" |
81 | "Command parameters:\n" | |
82 | " 'filename' is a disk image filename\n" | |
83 | " 'fmt' is the disk image format. It is guessed automatically in most cases\n" | |
661a0f71 | 84 | " 'cache' is the cache mode used to write the output disk image, the valid\n" |
80ccf93b LY |
85 | " options are: 'none', 'writeback' (default, except for convert), 'writethrough',\n" |
86 | " 'directsync' and 'unsafe' (default for convert)\n" | |
3f020d70 | 87 | " 'size' is the disk image size in bytes. Optional suffixes\n" |
88 | " 'k' or 'K' (kilobyte, 1024), 'M' (megabyte, 1024k), 'G' (gigabyte, 1024M)\n" | |
89 | " and T (terabyte, 1024G) are supported. 'b' is ignored.\n" | |
90 | " 'output_filename' is the destination disk image filename\n" | |
91 | " 'output_fmt' is the destination format\n" | |
92 | " 'options' is a comma separated list of format specific options in a\n" | |
93 | " name=value format. Use -o ? for an overview of the options supported by the\n" | |
94 | " used format\n" | |
95 | " '-c' indicates that target image must be compressed (qcow format only)\n" | |
96 | " '-u' enables unsafe rebasing. It is assumed that old and new backing file\n" | |
97 | " match exactly. The image doesn't need a working backing file before\n" | |
98 | " rebasing in this case (useful for renaming the backing file)\n" | |
99 | " '-h' with or without a command shows this help and lists the supported formats\n" | |
6b837bc4 | 100 | " '-p' show progress of command (only certain commands)\n" |
f382d43a | 101 | " '-q' use Quiet mode - do not print any output (except errors)\n" |
a22f123c KW |
102 | " '-S' indicates the consecutive number of bytes that must contain only zeros\n" |
103 | " for qemu-img to create a sparse image during conversion\n" | |
c054b3fd | 104 | " '--output' takes the format in which the output must be done (human or json)\n" |
3f020d70 | 105 | "\n" |
4534ff54 KW |
106 | "Parameters to check subcommand:\n" |
107 | " '-r' tries to repair any inconsistencies that are found during the check.\n" | |
108 | " '-r leaks' repairs only cluster leaks, whereas '-r all' fixes all\n" | |
109 | " kinds of errors, with a higher risk of choosing the wrong fix or\n" | |
0546b8c2 | 110 | " hiding corruption that has already occurred.\n" |
4534ff54 | 111 | "\n" |
3f020d70 | 112 | "Parameters to snapshot subcommand:\n" |
113 | " 'snapshot' is the name of the snapshot to create, apply or delete\n" | |
114 | " '-a' applies a snapshot (revert disk to saved state)\n" | |
115 | " '-c' creates a snapshot\n" | |
116 | " '-d' deletes a snapshot\n" | |
d14ed18c MR |
117 | " '-l' lists all snapshots in the given image\n" |
118 | "\n" | |
119 | "Parameters to compare subcommand:\n" | |
120 | " '-f' first image format\n" | |
121 | " '-F' second image format\n" | |
122 | " '-s' run in Strict mode - fail on different image size or sector allocation\n"; | |
e00291c0 PB |
123 | |
124 | printf("%s\nSupported formats:", help_msg); | |
ea2384d3 FB |
125 | bdrv_iterate_format(format_print, NULL); |
126 | printf("\n"); | |
127 | exit(1); | |
128 | } | |
129 | ||
f382d43a MR |
130 | static int qprintf(bool quiet, const char *fmt, ...) |
131 | { | |
132 | int ret = 0; | |
133 | if (!quiet) { | |
134 | va_list args; | |
135 | va_start(args, fmt); | |
136 | ret = vprintf(fmt, args); | |
137 | va_end(args); | |
138 | } | |
139 | return ret; | |
140 | } | |
141 | ||
ea2384d3 FB |
142 | #if defined(WIN32) |
143 | /* XXX: put correct support for win32 */ | |
144 | static int read_password(char *buf, int buf_size) | |
145 | { | |
146 | int c, i; | |
147 | printf("Password: "); | |
148 | fflush(stdout); | |
149 | i = 0; | |
150 | for(;;) { | |
151 | c = getchar(); | |
152 | if (c == '\n') | |
153 | break; | |
154 | if (i < (buf_size - 1)) | |
155 | buf[i++] = c; | |
156 | } | |
157 | buf[i] = '\0'; | |
158 | return 0; | |
159 | } | |
160 | ||
161 | #else | |
162 | ||
163 | #include <termios.h> | |
164 | ||
165 | static struct termios oldtty; | |
166 | ||
167 | static void term_exit(void) | |
168 | { | |
169 | tcsetattr (0, TCSANOW, &oldtty); | |
170 | } | |
171 | ||
172 | static void term_init(void) | |
173 | { | |
174 | struct termios tty; | |
175 | ||
176 | tcgetattr (0, &tty); | |
177 | oldtty = tty; | |
178 | ||
179 | tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP | |
180 | |INLCR|IGNCR|ICRNL|IXON); | |
181 | tty.c_oflag |= OPOST; | |
182 | tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN); | |
183 | tty.c_cflag &= ~(CSIZE|PARENB); | |
184 | tty.c_cflag |= CS8; | |
185 | tty.c_cc[VMIN] = 1; | |
186 | tty.c_cc[VTIME] = 0; | |
3b46e624 | 187 | |
ea2384d3 FB |
188 | tcsetattr (0, TCSANOW, &tty); |
189 | ||
190 | atexit(term_exit); | |
191 | } | |
192 | ||
3f379ab1 | 193 | static int read_password(char *buf, int buf_size) |
ea2384d3 FB |
194 | { |
195 | uint8_t ch; | |
196 | int i, ret; | |
197 | ||
198 | printf("password: "); | |
199 | fflush(stdout); | |
200 | term_init(); | |
201 | i = 0; | |
202 | for(;;) { | |
203 | ret = read(0, &ch, 1); | |
204 | if (ret == -1) { | |
205 | if (errno == EAGAIN || errno == EINTR) { | |
206 | continue; | |
207 | } else { | |
208 | ret = -1; | |
209 | break; | |
210 | } | |
211 | } else if (ret == 0) { | |
212 | ret = -1; | |
213 | break; | |
214 | } else { | |
215 | if (ch == '\r') { | |
216 | ret = 0; | |
217 | break; | |
218 | } | |
219 | if (i < (buf_size - 1)) | |
220 | buf[i++] = ch; | |
221 | } | |
222 | } | |
223 | term_exit(); | |
224 | buf[i] = '\0'; | |
225 | printf("\n"); | |
226 | return ret; | |
227 | } | |
228 | #endif | |
229 | ||
4ac8aacd JS |
230 | static int print_block_option_help(const char *filename, const char *fmt) |
231 | { | |
232 | BlockDriver *drv, *proto_drv; | |
233 | QEMUOptionParameter *create_options = NULL; | |
234 | ||
235 | /* Find driver and parse its options */ | |
236 | drv = bdrv_find_format(fmt); | |
237 | if (!drv) { | |
15654a6d | 238 | error_report("Unknown file format '%s'", fmt); |
4ac8aacd JS |
239 | return 1; |
240 | } | |
241 | ||
242 | proto_drv = bdrv_find_protocol(filename); | |
243 | if (!proto_drv) { | |
15654a6d | 244 | error_report("Unknown protocol '%s'", filename); |
4ac8aacd JS |
245 | return 1; |
246 | } | |
247 | ||
248 | create_options = append_option_parameters(create_options, | |
249 | drv->create_options); | |
250 | create_options = append_option_parameters(create_options, | |
251 | proto_drv->create_options); | |
252 | print_option_help(create_options); | |
253 | free_option_parameters(create_options); | |
254 | return 0; | |
255 | } | |
256 | ||
75c23805 | 257 | static BlockDriverState *bdrv_new_open(const char *filename, |
9bc378c1 | 258 | const char *fmt, |
f0536bb8 | 259 | int flags, |
f382d43a MR |
260 | bool require_io, |
261 | bool quiet) | |
75c23805 FB |
262 | { |
263 | BlockDriverState *bs; | |
264 | BlockDriver *drv; | |
265 | char password[256]; | |
b9eaf9ec | 266 | int ret; |
75c23805 | 267 | |
b9eaf9ec | 268 | bs = bdrv_new("image"); |
ad717139 | 269 | |
75c23805 FB |
270 | if (fmt) { |
271 | drv = bdrv_find_format(fmt); | |
c2abccec | 272 | if (!drv) { |
15654a6d | 273 | error_report("Unknown file format '%s'", fmt); |
c2abccec MK |
274 | goto fail; |
275 | } | |
75c23805 FB |
276 | } else { |
277 | drv = NULL; | |
278 | } | |
b9eaf9ec | 279 | |
de9c0cec | 280 | ret = bdrv_open(bs, filename, NULL, flags, drv); |
b9eaf9ec KW |
281 | if (ret < 0) { |
282 | error_report("Could not open '%s': %s", filename, strerror(-ret)); | |
c2abccec | 283 | goto fail; |
75c23805 | 284 | } |
b9eaf9ec | 285 | |
f0536bb8 | 286 | if (bdrv_is_encrypted(bs) && require_io) { |
f382d43a | 287 | qprintf(quiet, "Disk image '%s' is encrypted.\n", filename); |
c2abccec | 288 | if (read_password(password, sizeof(password)) < 0) { |
15654a6d | 289 | error_report("No password given"); |
c2abccec MK |
290 | goto fail; |
291 | } | |
292 | if (bdrv_set_key(bs, password) < 0) { | |
15654a6d | 293 | error_report("invalid password"); |
c2abccec MK |
294 | goto fail; |
295 | } | |
75c23805 FB |
296 | } |
297 | return bs; | |
c2abccec MK |
298 | fail: |
299 | if (bs) { | |
300 | bdrv_delete(bs); | |
301 | } | |
302 | return NULL; | |
75c23805 FB |
303 | } |
304 | ||
c2abccec | 305 | static int add_old_style_options(const char *fmt, QEMUOptionParameter *list, |
eec77d9e JS |
306 | const char *base_filename, |
307 | const char *base_fmt) | |
efa84d43 | 308 | { |
efa84d43 KW |
309 | if (base_filename) { |
310 | if (set_option_parameter(list, BLOCK_OPT_BACKING_FILE, base_filename)) { | |
15654a6d JS |
311 | error_report("Backing file not supported for file format '%s'", |
312 | fmt); | |
c2abccec | 313 | return -1; |
efa84d43 KW |
314 | } |
315 | } | |
316 | if (base_fmt) { | |
317 | if (set_option_parameter(list, BLOCK_OPT_BACKING_FMT, base_fmt)) { | |
15654a6d JS |
318 | error_report("Backing file format not supported for file " |
319 | "format '%s'", fmt); | |
c2abccec | 320 | return -1; |
efa84d43 KW |
321 | } |
322 | } | |
c2abccec | 323 | return 0; |
efa84d43 KW |
324 | } |
325 | ||
ea2384d3 FB |
326 | static int img_create(int argc, char **argv) |
327 | { | |
a9300911 | 328 | int c; |
1da7cfbd | 329 | uint64_t img_size = -1; |
ea2384d3 | 330 | const char *fmt = "raw"; |
9230eaf6 | 331 | const char *base_fmt = NULL; |
ea2384d3 FB |
332 | const char *filename; |
333 | const char *base_filename = NULL; | |
9ea2ea71 | 334 | char *options = NULL; |
9b37525a | 335 | Error *local_err = NULL; |
f382d43a | 336 | bool quiet = false; |
3b46e624 | 337 | |
ea2384d3 | 338 | for(;;) { |
f382d43a | 339 | c = getopt(argc, argv, "F:b:f:he6o:q"); |
b8fb60da | 340 | if (c == -1) { |
ea2384d3 | 341 | break; |
b8fb60da | 342 | } |
ea2384d3 | 343 | switch(c) { |
ef87394c | 344 | case '?': |
ea2384d3 FB |
345 | case 'h': |
346 | help(); | |
347 | break; | |
9230eaf6 AL |
348 | case 'F': |
349 | base_fmt = optarg; | |
350 | break; | |
ea2384d3 FB |
351 | case 'b': |
352 | base_filename = optarg; | |
353 | break; | |
354 | case 'f': | |
355 | fmt = optarg; | |
356 | break; | |
357 | case 'e': | |
9d42e15d | 358 | error_report("option -e is deprecated, please use \'-o " |
eec77d9e JS |
359 | "encryption\' instead!"); |
360 | return 1; | |
d8871c5a | 361 | case '6': |
9d42e15d | 362 | error_report("option -6 is deprecated, please use \'-o " |
eec77d9e JS |
363 | "compat6\' instead!"); |
364 | return 1; | |
9ea2ea71 KW |
365 | case 'o': |
366 | options = optarg; | |
367 | break; | |
f382d43a MR |
368 | case 'q': |
369 | quiet = true; | |
370 | break; | |
ea2384d3 FB |
371 | } |
372 | } | |
9230eaf6 | 373 | |
b50cbabc | 374 | /* Get the filename */ |
b8fb60da | 375 | if (optind >= argc) { |
b50cbabc | 376 | help(); |
b8fb60da | 377 | } |
b50cbabc MK |
378 | filename = argv[optind++]; |
379 | ||
1da7cfbd JS |
380 | /* Get image size, if specified */ |
381 | if (optind < argc) { | |
70b4f4bb | 382 | int64_t sval; |
e36b3695 MA |
383 | char *end; |
384 | sval = strtosz_suffix(argv[optind++], &end, STRTOSZ_DEFSUFFIX_B); | |
385 | if (sval < 0 || *end) { | |
79443397 | 386 | if (sval == -ERANGE) { |
387 | error_report("Image size must be less than 8 EiB!"); | |
388 | } else { | |
389 | error_report("Invalid image size specified! You may use k, M, " | |
390 | "G or T suffixes for "); | |
391 | error_report("kilobytes, megabytes, gigabytes and terabytes."); | |
392 | } | |
a9300911 | 393 | return 1; |
1da7cfbd JS |
394 | } |
395 | img_size = (uint64_t)sval; | |
396 | } | |
397 | ||
c8057f95 | 398 | if (options && is_help_option(options)) { |
a9300911 | 399 | return print_block_option_help(filename, fmt); |
4ac8aacd JS |
400 | } |
401 | ||
9b37525a | 402 | bdrv_img_create(filename, fmt, base_filename, base_fmt, |
f382d43a | 403 | options, img_size, BDRV_O_FLAGS, &local_err, quiet); |
9b37525a LC |
404 | if (error_is_set(&local_err)) { |
405 | error_report("%s", error_get_pretty(local_err)); | |
406 | error_free(local_err); | |
c2abccec MK |
407 | return 1; |
408 | } | |
a9300911 | 409 | |
ea2384d3 FB |
410 | return 0; |
411 | } | |
412 | ||
f382d43a | 413 | static void dump_json_image_check(ImageCheck *check, bool quiet) |
8599ea4c FS |
414 | { |
415 | Error *errp = NULL; | |
416 | QString *str; | |
417 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
418 | QObject *obj; | |
419 | visit_type_ImageCheck(qmp_output_get_visitor(ov), | |
420 | &check, NULL, &errp); | |
421 | obj = qmp_output_get_qobject(ov); | |
422 | str = qobject_to_json_pretty(obj); | |
423 | assert(str != NULL); | |
f382d43a | 424 | qprintf(quiet, "%s\n", qstring_get_str(str)); |
8599ea4c FS |
425 | qobject_decref(obj); |
426 | qmp_output_visitor_cleanup(ov); | |
427 | QDECREF(str); | |
428 | } | |
429 | ||
f382d43a | 430 | static void dump_human_image_check(ImageCheck *check, bool quiet) |
8599ea4c FS |
431 | { |
432 | if (!(check->corruptions || check->leaks || check->check_errors)) { | |
f382d43a | 433 | qprintf(quiet, "No errors were found on the image.\n"); |
8599ea4c FS |
434 | } else { |
435 | if (check->corruptions) { | |
f382d43a MR |
436 | qprintf(quiet, "\n%" PRId64 " errors were found on the image.\n" |
437 | "Data may be corrupted, or further writes to the image " | |
438 | "may corrupt it.\n", | |
439 | check->corruptions); | |
8599ea4c FS |
440 | } |
441 | ||
442 | if (check->leaks) { | |
f382d43a MR |
443 | qprintf(quiet, |
444 | "\n%" PRId64 " leaked clusters were found on the image.\n" | |
445 | "This means waste of disk space, but no harm to data.\n", | |
446 | check->leaks); | |
8599ea4c FS |
447 | } |
448 | ||
449 | if (check->check_errors) { | |
f382d43a MR |
450 | qprintf(quiet, |
451 | "\n%" PRId64 | |
452 | " internal errors have occurred during the check.\n", | |
453 | check->check_errors); | |
8599ea4c FS |
454 | } |
455 | } | |
456 | ||
457 | if (check->total_clusters != 0 && check->allocated_clusters != 0) { | |
f382d43a MR |
458 | qprintf(quiet, "%" PRId64 "/%" PRId64 " = %0.2f%% allocated, " |
459 | "%0.2f%% fragmented, %0.2f%% compressed clusters\n", | |
460 | check->allocated_clusters, check->total_clusters, | |
461 | check->allocated_clusters * 100.0 / check->total_clusters, | |
462 | check->fragmented_clusters * 100.0 / check->allocated_clusters, | |
463 | check->compressed_clusters * 100.0 / | |
464 | check->allocated_clusters); | |
8599ea4c FS |
465 | } |
466 | ||
467 | if (check->image_end_offset) { | |
f382d43a MR |
468 | qprintf(quiet, |
469 | "Image end offset: %" PRId64 "\n", check->image_end_offset); | |
8599ea4c FS |
470 | } |
471 | } | |
472 | ||
473 | static int collect_image_check(BlockDriverState *bs, | |
474 | ImageCheck *check, | |
475 | const char *filename, | |
476 | const char *fmt, | |
477 | int fix) | |
478 | { | |
479 | int ret; | |
480 | BdrvCheckResult result; | |
481 | ||
482 | ret = bdrv_check(bs, &result, fix); | |
483 | if (ret < 0) { | |
484 | return ret; | |
485 | } | |
486 | ||
487 | check->filename = g_strdup(filename); | |
488 | check->format = g_strdup(bdrv_get_format_name(bs)); | |
489 | check->check_errors = result.check_errors; | |
490 | check->corruptions = result.corruptions; | |
491 | check->has_corruptions = result.corruptions != 0; | |
492 | check->leaks = result.leaks; | |
493 | check->has_leaks = result.leaks != 0; | |
494 | check->corruptions_fixed = result.corruptions_fixed; | |
495 | check->has_corruptions_fixed = result.corruptions != 0; | |
496 | check->leaks_fixed = result.leaks_fixed; | |
497 | check->has_leaks_fixed = result.leaks != 0; | |
498 | check->image_end_offset = result.image_end_offset; | |
499 | check->has_image_end_offset = result.image_end_offset != 0; | |
500 | check->total_clusters = result.bfi.total_clusters; | |
501 | check->has_total_clusters = result.bfi.total_clusters != 0; | |
502 | check->allocated_clusters = result.bfi.allocated_clusters; | |
503 | check->has_allocated_clusters = result.bfi.allocated_clusters != 0; | |
504 | check->fragmented_clusters = result.bfi.fragmented_clusters; | |
505 | check->has_fragmented_clusters = result.bfi.fragmented_clusters != 0; | |
e6439d78 SH |
506 | check->compressed_clusters = result.bfi.compressed_clusters; |
507 | check->has_compressed_clusters = result.bfi.compressed_clusters != 0; | |
8599ea4c FS |
508 | |
509 | return 0; | |
510 | } | |
511 | ||
e076f338 KW |
512 | /* |
513 | * Checks an image for consistency. Exit codes: | |
514 | * | |
515 | * 0 - Check completed, image is good | |
516 | * 1 - Check not completed because of internal errors | |
517 | * 2 - Check completed, image is corrupted | |
518 | * 3 - Check completed, image has leaked clusters, but is good otherwise | |
519 | */ | |
1585969c AL |
520 | static int img_check(int argc, char **argv) |
521 | { | |
522 | int c, ret; | |
8599ea4c FS |
523 | OutputFormat output_format = OFORMAT_HUMAN; |
524 | const char *filename, *fmt, *output; | |
1585969c | 525 | BlockDriverState *bs; |
4534ff54 | 526 | int fix = 0; |
058f8f16 | 527 | int flags = BDRV_O_FLAGS | BDRV_O_CHECK; |
8599ea4c | 528 | ImageCheck *check; |
f382d43a | 529 | bool quiet = false; |
1585969c AL |
530 | |
531 | fmt = NULL; | |
8599ea4c | 532 | output = NULL; |
1585969c | 533 | for(;;) { |
8599ea4c FS |
534 | int option_index = 0; |
535 | static const struct option long_options[] = { | |
536 | {"help", no_argument, 0, 'h'}, | |
537 | {"format", required_argument, 0, 'f'}, | |
538 | {"repair", no_argument, 0, 'r'}, | |
539 | {"output", required_argument, 0, OPTION_OUTPUT}, | |
540 | {0, 0, 0, 0} | |
541 | }; | |
f382d43a | 542 | c = getopt_long(argc, argv, "f:hr:q", |
8599ea4c | 543 | long_options, &option_index); |
b8fb60da | 544 | if (c == -1) { |
1585969c | 545 | break; |
b8fb60da | 546 | } |
1585969c | 547 | switch(c) { |
ef87394c | 548 | case '?': |
1585969c AL |
549 | case 'h': |
550 | help(); | |
551 | break; | |
552 | case 'f': | |
553 | fmt = optarg; | |
554 | break; | |
4534ff54 KW |
555 | case 'r': |
556 | flags |= BDRV_O_RDWR; | |
557 | ||
558 | if (!strcmp(optarg, "leaks")) { | |
559 | fix = BDRV_FIX_LEAKS; | |
560 | } else if (!strcmp(optarg, "all")) { | |
561 | fix = BDRV_FIX_LEAKS | BDRV_FIX_ERRORS; | |
562 | } else { | |
563 | help(); | |
564 | } | |
565 | break; | |
8599ea4c FS |
566 | case OPTION_OUTPUT: |
567 | output = optarg; | |
568 | break; | |
f382d43a MR |
569 | case 'q': |
570 | quiet = true; | |
571 | break; | |
1585969c AL |
572 | } |
573 | } | |
b8fb60da | 574 | if (optind >= argc) { |
1585969c | 575 | help(); |
b8fb60da | 576 | } |
1585969c AL |
577 | filename = argv[optind++]; |
578 | ||
8599ea4c FS |
579 | if (output && !strcmp(output, "json")) { |
580 | output_format = OFORMAT_JSON; | |
581 | } else if (output && !strcmp(output, "human")) { | |
582 | output_format = OFORMAT_HUMAN; | |
583 | } else if (output) { | |
584 | error_report("--output must be used with human or json as argument."); | |
585 | return 1; | |
586 | } | |
587 | ||
f382d43a | 588 | bs = bdrv_new_open(filename, fmt, flags, true, quiet); |
c2abccec MK |
589 | if (!bs) { |
590 | return 1; | |
591 | } | |
8599ea4c FS |
592 | |
593 | check = g_new0(ImageCheck, 1); | |
594 | ret = collect_image_check(bs, check, filename, fmt, fix); | |
e076f338 KW |
595 | |
596 | if (ret == -ENOTSUP) { | |
8599ea4c FS |
597 | if (output_format == OFORMAT_HUMAN) { |
598 | error_report("This image format does not support checks"); | |
599 | } | |
600 | ret = 1; | |
601 | goto fail; | |
e076f338 KW |
602 | } |
603 | ||
8599ea4c FS |
604 | if (check->corruptions_fixed || check->leaks_fixed) { |
605 | int corruptions_fixed, leaks_fixed; | |
ccf34716 | 606 | |
8599ea4c FS |
607 | leaks_fixed = check->leaks_fixed; |
608 | corruptions_fixed = check->corruptions_fixed; | |
e076f338 | 609 | |
8599ea4c | 610 | if (output_format == OFORMAT_HUMAN) { |
f382d43a MR |
611 | qprintf(quiet, |
612 | "The following inconsistencies were found and repaired:\n\n" | |
613 | " %" PRId64 " leaked clusters\n" | |
614 | " %" PRId64 " corruptions\n\n" | |
615 | "Double checking the fixed image now...\n", | |
616 | check->leaks_fixed, | |
617 | check->corruptions_fixed); | |
e076f338 KW |
618 | } |
619 | ||
8599ea4c | 620 | ret = collect_image_check(bs, check, filename, fmt, 0); |
1585969c | 621 | |
8599ea4c FS |
622 | check->leaks_fixed = leaks_fixed; |
623 | check->corruptions_fixed = corruptions_fixed; | |
f8111c24 DXW |
624 | } |
625 | ||
8599ea4c FS |
626 | switch (output_format) { |
627 | case OFORMAT_HUMAN: | |
f382d43a | 628 | dump_human_image_check(check, quiet); |
8599ea4c FS |
629 | break; |
630 | case OFORMAT_JSON: | |
f382d43a | 631 | dump_json_image_check(check, quiet); |
8599ea4c | 632 | break; |
c6bb9ad1 FS |
633 | } |
634 | ||
8599ea4c FS |
635 | if (ret || check->check_errors) { |
636 | ret = 1; | |
637 | goto fail; | |
c2abccec | 638 | } |
e076f338 | 639 | |
8599ea4c FS |
640 | if (check->corruptions) { |
641 | ret = 2; | |
642 | } else if (check->leaks) { | |
643 | ret = 3; | |
e076f338 | 644 | } else { |
8599ea4c | 645 | ret = 0; |
e076f338 | 646 | } |
8599ea4c FS |
647 | |
648 | fail: | |
649 | qapi_free_ImageCheck(check); | |
650 | bdrv_delete(bs); | |
651 | ||
652 | return ret; | |
1585969c AL |
653 | } |
654 | ||
ea2384d3 FB |
655 | static int img_commit(int argc, char **argv) |
656 | { | |
661a0f71 FS |
657 | int c, ret, flags; |
658 | const char *filename, *fmt, *cache; | |
ea2384d3 | 659 | BlockDriverState *bs; |
f382d43a | 660 | bool quiet = false; |
ea2384d3 FB |
661 | |
662 | fmt = NULL; | |
661a0f71 | 663 | cache = BDRV_DEFAULT_CACHE; |
ea2384d3 | 664 | for(;;) { |
f382d43a | 665 | c = getopt(argc, argv, "f:ht:q"); |
b8fb60da | 666 | if (c == -1) { |
ea2384d3 | 667 | break; |
b8fb60da | 668 | } |
ea2384d3 | 669 | switch(c) { |
ef87394c | 670 | case '?': |
ea2384d3 FB |
671 | case 'h': |
672 | help(); | |
673 | break; | |
674 | case 'f': | |
675 | fmt = optarg; | |
676 | break; | |
661a0f71 FS |
677 | case 't': |
678 | cache = optarg; | |
679 | break; | |
f382d43a MR |
680 | case 'q': |
681 | quiet = true; | |
682 | break; | |
ea2384d3 FB |
683 | } |
684 | } | |
b8fb60da | 685 | if (optind >= argc) { |
ea2384d3 | 686 | help(); |
b8fb60da | 687 | } |
ea2384d3 FB |
688 | filename = argv[optind++]; |
689 | ||
661a0f71 | 690 | flags = BDRV_O_RDWR; |
c3993cdc | 691 | ret = bdrv_parse_cache_flags(cache, &flags); |
661a0f71 FS |
692 | if (ret < 0) { |
693 | error_report("Invalid cache option: %s", cache); | |
694 | return -1; | |
695 | } | |
696 | ||
f382d43a | 697 | bs = bdrv_new_open(filename, fmt, flags, true, quiet); |
c2abccec MK |
698 | if (!bs) { |
699 | return 1; | |
700 | } | |
ea2384d3 FB |
701 | ret = bdrv_commit(bs); |
702 | switch(ret) { | |
703 | case 0: | |
f382d43a | 704 | qprintf(quiet, "Image committed.\n"); |
ea2384d3 FB |
705 | break; |
706 | case -ENOENT: | |
15654a6d | 707 | error_report("No disk inserted"); |
ea2384d3 FB |
708 | break; |
709 | case -EACCES: | |
15654a6d | 710 | error_report("Image is read-only"); |
ea2384d3 FB |
711 | break; |
712 | case -ENOTSUP: | |
15654a6d | 713 | error_report("Image is already committed"); |
ea2384d3 FB |
714 | break; |
715 | default: | |
15654a6d | 716 | error_report("Error while committing image"); |
ea2384d3 FB |
717 | break; |
718 | } | |
719 | ||
720 | bdrv_delete(bs); | |
c2abccec MK |
721 | if (ret) { |
722 | return 1; | |
723 | } | |
ea2384d3 FB |
724 | return 0; |
725 | } | |
726 | ||
f58c7b35 TS |
727 | /* |
728 | * Returns true iff the first sector pointed to by 'buf' contains at least | |
729 | * a non-NUL byte. | |
730 | * | |
731 | * 'pnum' is set to the number of sectors (including and immediately following | |
732 | * the first one) that are known to be in the same allocated/unallocated state. | |
733 | */ | |
ea2384d3 FB |
734 | static int is_allocated_sectors(const uint8_t *buf, int n, int *pnum) |
735 | { | |
1a6d39fd SH |
736 | bool is_zero; |
737 | int i; | |
ea2384d3 FB |
738 | |
739 | if (n <= 0) { | |
740 | *pnum = 0; | |
741 | return 0; | |
742 | } | |
1a6d39fd | 743 | is_zero = buffer_is_zero(buf, 512); |
ea2384d3 FB |
744 | for(i = 1; i < n; i++) { |
745 | buf += 512; | |
1a6d39fd | 746 | if (is_zero != buffer_is_zero(buf, 512)) { |
ea2384d3 | 747 | break; |
1a6d39fd | 748 | } |
ea2384d3 FB |
749 | } |
750 | *pnum = i; | |
1a6d39fd | 751 | return !is_zero; |
ea2384d3 FB |
752 | } |
753 | ||
a22f123c KW |
754 | /* |
755 | * Like is_allocated_sectors, but if the buffer starts with a used sector, | |
756 | * up to 'min' consecutive sectors containing zeros are ignored. This avoids | |
757 | * breaking up write requests for only small sparse areas. | |
758 | */ | |
759 | static int is_allocated_sectors_min(const uint8_t *buf, int n, int *pnum, | |
760 | int min) | |
761 | { | |
762 | int ret; | |
763 | int num_checked, num_used; | |
764 | ||
765 | if (n < min) { | |
766 | min = n; | |
767 | } | |
768 | ||
769 | ret = is_allocated_sectors(buf, n, pnum); | |
770 | if (!ret) { | |
771 | return ret; | |
772 | } | |
773 | ||
774 | num_used = *pnum; | |
775 | buf += BDRV_SECTOR_SIZE * *pnum; | |
776 | n -= *pnum; | |
777 | num_checked = num_used; | |
778 | ||
779 | while (n > 0) { | |
780 | ret = is_allocated_sectors(buf, n, pnum); | |
781 | ||
782 | buf += BDRV_SECTOR_SIZE * *pnum; | |
783 | n -= *pnum; | |
784 | num_checked += *pnum; | |
785 | if (ret) { | |
786 | num_used = num_checked; | |
787 | } else if (*pnum >= min) { | |
788 | break; | |
789 | } | |
790 | } | |
791 | ||
792 | *pnum = num_used; | |
793 | return 1; | |
794 | } | |
795 | ||
3e85c6fd KW |
796 | /* |
797 | * Compares two buffers sector by sector. Returns 0 if the first sector of both | |
798 | * buffers matches, non-zero otherwise. | |
799 | * | |
800 | * pnum is set to the number of sectors (including and immediately following | |
801 | * the first one) that are known to have the same comparison result | |
802 | */ | |
803 | static int compare_sectors(const uint8_t *buf1, const uint8_t *buf2, int n, | |
804 | int *pnum) | |
805 | { | |
806 | int res, i; | |
807 | ||
808 | if (n <= 0) { | |
809 | *pnum = 0; | |
810 | return 0; | |
811 | } | |
812 | ||
813 | res = !!memcmp(buf1, buf2, 512); | |
814 | for(i = 1; i < n; i++) { | |
815 | buf1 += 512; | |
816 | buf2 += 512; | |
817 | ||
818 | if (!!memcmp(buf1, buf2, 512) != res) { | |
819 | break; | |
820 | } | |
821 | } | |
822 | ||
823 | *pnum = i; | |
824 | return res; | |
825 | } | |
826 | ||
80ee15a6 | 827 | #define IO_BUF_SIZE (2 * 1024 * 1024) |
ea2384d3 | 828 | |
d14ed18c MR |
829 | static int64_t sectors_to_bytes(int64_t sectors) |
830 | { | |
831 | return sectors << BDRV_SECTOR_BITS; | |
832 | } | |
833 | ||
834 | static int64_t sectors_to_process(int64_t total, int64_t from) | |
835 | { | |
836 | return MIN(total - from, IO_BUF_SIZE >> BDRV_SECTOR_BITS); | |
837 | } | |
838 | ||
839 | /* | |
840 | * Check if passed sectors are empty (not allocated or contain only 0 bytes) | |
841 | * | |
842 | * Returns 0 in case sectors are filled with 0, 1 if sectors contain non-zero | |
843 | * data and negative value on error. | |
844 | * | |
845 | * @param bs: Driver used for accessing file | |
846 | * @param sect_num: Number of first sector to check | |
847 | * @param sect_count: Number of sectors to check | |
848 | * @param filename: Name of disk file we are checking (logging purpose) | |
849 | * @param buffer: Allocated buffer for storing read data | |
850 | * @param quiet: Flag for quiet mode | |
851 | */ | |
852 | static int check_empty_sectors(BlockDriverState *bs, int64_t sect_num, | |
853 | int sect_count, const char *filename, | |
854 | uint8_t *buffer, bool quiet) | |
855 | { | |
856 | int pnum, ret = 0; | |
857 | ret = bdrv_read(bs, sect_num, buffer, sect_count); | |
858 | if (ret < 0) { | |
859 | error_report("Error while reading offset %" PRId64 " of %s: %s", | |
860 | sectors_to_bytes(sect_num), filename, strerror(-ret)); | |
861 | return ret; | |
862 | } | |
863 | ret = is_allocated_sectors(buffer, sect_count, &pnum); | |
864 | if (ret || pnum != sect_count) { | |
865 | qprintf(quiet, "Content mismatch at offset %" PRId64 "!\n", | |
866 | sectors_to_bytes(ret ? sect_num : sect_num + pnum)); | |
867 | return 1; | |
868 | } | |
869 | ||
870 | return 0; | |
871 | } | |
872 | ||
873 | /* | |
874 | * Compares two images. Exit codes: | |
875 | * | |
876 | * 0 - Images are identical | |
877 | * 1 - Images differ | |
878 | * >1 - Error occurred | |
879 | */ | |
880 | static int img_compare(int argc, char **argv) | |
881 | { | |
882 | const char *fmt1 = NULL, *fmt2 = NULL, *filename1, *filename2; | |
883 | BlockDriverState *bs1, *bs2; | |
884 | int64_t total_sectors1, total_sectors2; | |
885 | uint8_t *buf1 = NULL, *buf2 = NULL; | |
886 | int pnum1, pnum2; | |
887 | int allocated1, allocated2; | |
888 | int ret = 0; /* return value - 0 Ident, 1 Different, >1 Error */ | |
889 | bool progress = false, quiet = false, strict = false; | |
890 | int64_t total_sectors; | |
891 | int64_t sector_num = 0; | |
892 | int64_t nb_sectors; | |
893 | int c, pnum; | |
894 | uint64_t bs_sectors; | |
895 | uint64_t progress_base; | |
896 | ||
897 | for (;;) { | |
898 | c = getopt(argc, argv, "hpf:F:sq"); | |
899 | if (c == -1) { | |
900 | break; | |
901 | } | |
902 | switch (c) { | |
903 | case '?': | |
904 | case 'h': | |
905 | help(); | |
906 | break; | |
907 | case 'f': | |
908 | fmt1 = optarg; | |
909 | break; | |
910 | case 'F': | |
911 | fmt2 = optarg; | |
912 | break; | |
913 | case 'p': | |
914 | progress = true; | |
915 | break; | |
916 | case 'q': | |
917 | quiet = true; | |
918 | break; | |
919 | case 's': | |
920 | strict = true; | |
921 | break; | |
922 | } | |
923 | } | |
924 | ||
925 | /* Progress is not shown in Quiet mode */ | |
926 | if (quiet) { | |
927 | progress = false; | |
928 | } | |
929 | ||
930 | ||
931 | if (optind > argc - 2) { | |
932 | help(); | |
933 | } | |
934 | filename1 = argv[optind++]; | |
935 | filename2 = argv[optind++]; | |
936 | ||
937 | /* Initialize before goto out */ | |
938 | qemu_progress_init(progress, 2.0); | |
939 | ||
940 | bs1 = bdrv_new_open(filename1, fmt1, BDRV_O_FLAGS, true, quiet); | |
941 | if (!bs1) { | |
942 | error_report("Can't open file %s", filename1); | |
943 | ret = 2; | |
944 | goto out3; | |
945 | } | |
946 | ||
947 | bs2 = bdrv_new_open(filename2, fmt2, BDRV_O_FLAGS, true, quiet); | |
948 | if (!bs2) { | |
949 | error_report("Can't open file %s", filename2); | |
950 | ret = 2; | |
951 | goto out2; | |
952 | } | |
953 | ||
954 | buf1 = qemu_blockalign(bs1, IO_BUF_SIZE); | |
955 | buf2 = qemu_blockalign(bs2, IO_BUF_SIZE); | |
956 | bdrv_get_geometry(bs1, &bs_sectors); | |
957 | total_sectors1 = bs_sectors; | |
958 | bdrv_get_geometry(bs2, &bs_sectors); | |
959 | total_sectors2 = bs_sectors; | |
960 | total_sectors = MIN(total_sectors1, total_sectors2); | |
961 | progress_base = MAX(total_sectors1, total_sectors2); | |
962 | ||
963 | qemu_progress_print(0, 100); | |
964 | ||
965 | if (strict && total_sectors1 != total_sectors2) { | |
966 | ret = 1; | |
967 | qprintf(quiet, "Strict mode: Image size mismatch!\n"); | |
968 | goto out; | |
969 | } | |
970 | ||
971 | for (;;) { | |
972 | nb_sectors = sectors_to_process(total_sectors, sector_num); | |
973 | if (nb_sectors <= 0) { | |
974 | break; | |
975 | } | |
976 | allocated1 = bdrv_is_allocated_above(bs1, NULL, sector_num, nb_sectors, | |
977 | &pnum1); | |
978 | if (allocated1 < 0) { | |
979 | ret = 3; | |
980 | error_report("Sector allocation test failed for %s", filename1); | |
981 | goto out; | |
982 | } | |
983 | ||
984 | allocated2 = bdrv_is_allocated_above(bs2, NULL, sector_num, nb_sectors, | |
985 | &pnum2); | |
986 | if (allocated2 < 0) { | |
987 | ret = 3; | |
988 | error_report("Sector allocation test failed for %s", filename2); | |
989 | goto out; | |
990 | } | |
991 | nb_sectors = MIN(pnum1, pnum2); | |
992 | ||
993 | if (allocated1 == allocated2) { | |
994 | if (allocated1) { | |
995 | ret = bdrv_read(bs1, sector_num, buf1, nb_sectors); | |
996 | if (ret < 0) { | |
997 | error_report("Error while reading offset %" PRId64 " of %s:" | |
998 | " %s", sectors_to_bytes(sector_num), filename1, | |
999 | strerror(-ret)); | |
1000 | ret = 4; | |
1001 | goto out; | |
1002 | } | |
1003 | ret = bdrv_read(bs2, sector_num, buf2, nb_sectors); | |
1004 | if (ret < 0) { | |
1005 | error_report("Error while reading offset %" PRId64 | |
1006 | " of %s: %s", sectors_to_bytes(sector_num), | |
1007 | filename2, strerror(-ret)); | |
1008 | ret = 4; | |
1009 | goto out; | |
1010 | } | |
1011 | ret = compare_sectors(buf1, buf2, nb_sectors, &pnum); | |
1012 | if (ret || pnum != nb_sectors) { | |
1013 | ret = 1; | |
1014 | qprintf(quiet, "Content mismatch at offset %" PRId64 "!\n", | |
1015 | sectors_to_bytes( | |
1016 | ret ? sector_num : sector_num + pnum)); | |
1017 | goto out; | |
1018 | } | |
1019 | } | |
1020 | } else { | |
1021 | if (strict) { | |
1022 | ret = 1; | |
1023 | qprintf(quiet, "Strict mode: Offset %" PRId64 | |
1024 | " allocation mismatch!\n", | |
1025 | sectors_to_bytes(sector_num)); | |
1026 | goto out; | |
1027 | } | |
1028 | ||
1029 | if (allocated1) { | |
1030 | ret = check_empty_sectors(bs1, sector_num, nb_sectors, | |
1031 | filename1, buf1, quiet); | |
1032 | } else { | |
1033 | ret = check_empty_sectors(bs2, sector_num, nb_sectors, | |
1034 | filename2, buf1, quiet); | |
1035 | } | |
1036 | if (ret) { | |
1037 | if (ret < 0) { | |
1038 | ret = 4; | |
1039 | error_report("Error while reading offset %" PRId64 ": %s", | |
1040 | sectors_to_bytes(sector_num), strerror(-ret)); | |
1041 | } | |
1042 | goto out; | |
1043 | } | |
1044 | } | |
1045 | sector_num += nb_sectors; | |
1046 | qemu_progress_print(((float) nb_sectors / progress_base)*100, 100); | |
1047 | } | |
1048 | ||
1049 | if (total_sectors1 != total_sectors2) { | |
1050 | BlockDriverState *bs_over; | |
1051 | int64_t total_sectors_over; | |
1052 | const char *filename_over; | |
1053 | ||
1054 | qprintf(quiet, "Warning: Image size mismatch!\n"); | |
1055 | if (total_sectors1 > total_sectors2) { | |
1056 | total_sectors_over = total_sectors1; | |
1057 | bs_over = bs1; | |
1058 | filename_over = filename1; | |
1059 | } else { | |
1060 | total_sectors_over = total_sectors2; | |
1061 | bs_over = bs2; | |
1062 | filename_over = filename2; | |
1063 | } | |
1064 | ||
1065 | for (;;) { | |
1066 | nb_sectors = sectors_to_process(total_sectors_over, sector_num); | |
1067 | if (nb_sectors <= 0) { | |
1068 | break; | |
1069 | } | |
1070 | ret = bdrv_is_allocated_above(bs_over, NULL, sector_num, | |
1071 | nb_sectors, &pnum); | |
1072 | if (ret < 0) { | |
1073 | ret = 3; | |
1074 | error_report("Sector allocation test failed for %s", | |
1075 | filename_over); | |
1076 | goto out; | |
1077 | ||
1078 | } | |
1079 | nb_sectors = pnum; | |
1080 | if (ret) { | |
1081 | ret = check_empty_sectors(bs_over, sector_num, nb_sectors, | |
1082 | filename_over, buf1, quiet); | |
1083 | if (ret) { | |
1084 | if (ret < 0) { | |
1085 | ret = 4; | |
1086 | error_report("Error while reading offset %" PRId64 | |
1087 | " of %s: %s", sectors_to_bytes(sector_num), | |
1088 | filename_over, strerror(-ret)); | |
1089 | } | |
1090 | goto out; | |
1091 | } | |
1092 | } | |
1093 | sector_num += nb_sectors; | |
1094 | qemu_progress_print(((float) nb_sectors / progress_base)*100, 100); | |
1095 | } | |
1096 | } | |
1097 | ||
1098 | qprintf(quiet, "Images are identical.\n"); | |
1099 | ret = 0; | |
1100 | ||
1101 | out: | |
1102 | bdrv_delete(bs2); | |
1103 | qemu_vfree(buf1); | |
1104 | qemu_vfree(buf2); | |
1105 | out2: | |
1106 | bdrv_delete(bs1); | |
1107 | out3: | |
1108 | qemu_progress_end(); | |
1109 | return ret; | |
1110 | } | |
1111 | ||
ea2384d3 FB |
1112 | static int img_convert(int argc, char **argv) |
1113 | { | |
eec77d9e | 1114 | int c, ret = 0, n, n1, bs_n, bs_i, compress, cluster_size, cluster_sectors; |
661a0f71 FS |
1115 | int progress = 0, flags; |
1116 | const char *fmt, *out_fmt, *cache, *out_baseimg, *out_filename; | |
b50cbabc | 1117 | BlockDriver *drv, *proto_drv; |
c2abccec | 1118 | BlockDriverState **bs = NULL, *out_bs = NULL; |
96b8f136 TS |
1119 | int64_t total_sectors, nb_sectors, sector_num, bs_offset; |
1120 | uint64_t bs_sectors; | |
c2abccec | 1121 | uint8_t * buf = NULL; |
ea2384d3 | 1122 | const uint8_t *buf1; |
faea38e7 | 1123 | BlockDriverInfo bdi; |
b50cbabc | 1124 | QEMUOptionParameter *param = NULL, *create_options = NULL; |
a18953fb | 1125 | QEMUOptionParameter *out_baseimg_param; |
efa84d43 | 1126 | char *options = NULL; |
51ef6727 | 1127 | const char *snapshot_name = NULL; |
1f710495 | 1128 | float local_progress = 0; |
a22f123c | 1129 | int min_sparse = 8; /* Need at least 4k of zeros for sparse detection */ |
f382d43a | 1130 | bool quiet = false; |
ea2384d3 FB |
1131 | |
1132 | fmt = NULL; | |
1133 | out_fmt = "raw"; | |
661a0f71 | 1134 | cache = "unsafe"; |
f58c7b35 | 1135 | out_baseimg = NULL; |
eec77d9e | 1136 | compress = 0; |
ea2384d3 | 1137 | for(;;) { |
f382d43a | 1138 | c = getopt(argc, argv, "f:O:B:s:hce6o:pS:t:q"); |
b8fb60da | 1139 | if (c == -1) { |
ea2384d3 | 1140 | break; |
b8fb60da | 1141 | } |
ea2384d3 | 1142 | switch(c) { |
ef87394c | 1143 | case '?': |
ea2384d3 FB |
1144 | case 'h': |
1145 | help(); | |
1146 | break; | |
1147 | case 'f': | |
1148 | fmt = optarg; | |
1149 | break; | |
1150 | case 'O': | |
1151 | out_fmt = optarg; | |
1152 | break; | |
f58c7b35 TS |
1153 | case 'B': |
1154 | out_baseimg = optarg; | |
1155 | break; | |
ea2384d3 | 1156 | case 'c': |
eec77d9e | 1157 | compress = 1; |
ea2384d3 FB |
1158 | break; |
1159 | case 'e': | |
9d42e15d | 1160 | error_report("option -e is deprecated, please use \'-o " |
eec77d9e JS |
1161 | "encryption\' instead!"); |
1162 | return 1; | |
ec36ba14 | 1163 | case '6': |
9d42e15d | 1164 | error_report("option -6 is deprecated, please use \'-o " |
eec77d9e JS |
1165 | "compat6\' instead!"); |
1166 | return 1; | |
efa84d43 KW |
1167 | case 'o': |
1168 | options = optarg; | |
1169 | break; | |
51ef6727 | 1170 | case 's': |
1171 | snapshot_name = optarg; | |
1172 | break; | |
a22f123c KW |
1173 | case 'S': |
1174 | { | |
1175 | int64_t sval; | |
e36b3695 MA |
1176 | char *end; |
1177 | sval = strtosz_suffix(optarg, &end, STRTOSZ_DEFSUFFIX_B); | |
1178 | if (sval < 0 || *end) { | |
a22f123c KW |
1179 | error_report("Invalid minimum zero buffer size for sparse output specified"); |
1180 | return 1; | |
1181 | } | |
1182 | ||
1183 | min_sparse = sval / BDRV_SECTOR_SIZE; | |
1184 | break; | |
1185 | } | |
6b837bc4 JS |
1186 | case 'p': |
1187 | progress = 1; | |
1188 | break; | |
661a0f71 FS |
1189 | case 't': |
1190 | cache = optarg; | |
1191 | break; | |
f382d43a MR |
1192 | case 'q': |
1193 | quiet = true; | |
1194 | break; | |
ea2384d3 FB |
1195 | } |
1196 | } | |
3b46e624 | 1197 | |
f382d43a MR |
1198 | if (quiet) { |
1199 | progress = 0; | |
1200 | } | |
1201 | ||
926c2d23 | 1202 | bs_n = argc - optind - 1; |
b8fb60da JS |
1203 | if (bs_n < 1) { |
1204 | help(); | |
1205 | } | |
926c2d23 AZ |
1206 | |
1207 | out_filename = argv[argc - 1]; | |
f58c7b35 | 1208 | |
fa170c14 CA |
1209 | /* Initialize before goto out */ |
1210 | qemu_progress_init(progress, 2.0); | |
1211 | ||
c8057f95 | 1212 | if (options && is_help_option(options)) { |
4ac8aacd JS |
1213 | ret = print_block_option_help(out_filename, out_fmt); |
1214 | goto out; | |
1215 | } | |
1216 | ||
c2abccec | 1217 | if (bs_n > 1 && out_baseimg) { |
15654a6d JS |
1218 | error_report("-B makes no sense when concatenating multiple input " |
1219 | "images"); | |
31ca34b8 JS |
1220 | ret = -1; |
1221 | goto out; | |
c2abccec | 1222 | } |
f8111c24 | 1223 | |
6b837bc4 JS |
1224 | qemu_progress_print(0, 100); |
1225 | ||
7267c094 | 1226 | bs = g_malloc0(bs_n * sizeof(BlockDriverState *)); |
926c2d23 AZ |
1227 | |
1228 | total_sectors = 0; | |
1229 | for (bs_i = 0; bs_i < bs_n; bs_i++) { | |
f382d43a MR |
1230 | bs[bs_i] = bdrv_new_open(argv[optind + bs_i], fmt, BDRV_O_FLAGS, true, |
1231 | quiet); | |
c2abccec | 1232 | if (!bs[bs_i]) { |
15654a6d | 1233 | error_report("Could not open '%s'", argv[optind + bs_i]); |
c2abccec MK |
1234 | ret = -1; |
1235 | goto out; | |
1236 | } | |
926c2d23 AZ |
1237 | bdrv_get_geometry(bs[bs_i], &bs_sectors); |
1238 | total_sectors += bs_sectors; | |
1239 | } | |
ea2384d3 | 1240 | |
51ef6727 | 1241 | if (snapshot_name != NULL) { |
1242 | if (bs_n > 1) { | |
6daf194d | 1243 | error_report("No support for concatenating multiple snapshot"); |
51ef6727 | 1244 | ret = -1; |
1245 | goto out; | |
1246 | } | |
1247 | if (bdrv_snapshot_load_tmp(bs[0], snapshot_name) < 0) { | |
6daf194d | 1248 | error_report("Failed to load snapshot"); |
51ef6727 | 1249 | ret = -1; |
1250 | goto out; | |
1251 | } | |
1252 | } | |
1253 | ||
efa84d43 | 1254 | /* Find driver and parse its options */ |
ea2384d3 | 1255 | drv = bdrv_find_format(out_fmt); |
c2abccec | 1256 | if (!drv) { |
15654a6d | 1257 | error_report("Unknown file format '%s'", out_fmt); |
c2abccec MK |
1258 | ret = -1; |
1259 | goto out; | |
1260 | } | |
efa84d43 | 1261 | |
b50cbabc | 1262 | proto_drv = bdrv_find_protocol(out_filename); |
c2abccec | 1263 | if (!proto_drv) { |
15654a6d | 1264 | error_report("Unknown protocol '%s'", out_filename); |
c2abccec MK |
1265 | ret = -1; |
1266 | goto out; | |
1267 | } | |
b50cbabc MK |
1268 | |
1269 | create_options = append_option_parameters(create_options, | |
1270 | drv->create_options); | |
1271 | create_options = append_option_parameters(create_options, | |
1272 | proto_drv->create_options); | |
db08adf5 | 1273 | |
efa84d43 | 1274 | if (options) { |
b50cbabc | 1275 | param = parse_option_parameters(options, create_options, param); |
efa84d43 | 1276 | if (param == NULL) { |
15654a6d | 1277 | error_report("Invalid options for file format '%s'.", out_fmt); |
c2abccec MK |
1278 | ret = -1; |
1279 | goto out; | |
efa84d43 KW |
1280 | } |
1281 | } else { | |
b50cbabc | 1282 | param = parse_option_parameters("", create_options, param); |
efa84d43 KW |
1283 | } |
1284 | ||
1285 | set_option_parameter_int(param, BLOCK_OPT_SIZE, total_sectors * 512); | |
eec77d9e | 1286 | ret = add_old_style_options(out_fmt, param, out_baseimg, NULL); |
c2abccec MK |
1287 | if (ret < 0) { |
1288 | goto out; | |
1289 | } | |
efa84d43 | 1290 | |
a18953fb KW |
1291 | /* Get backing file name if -o backing_file was used */ |
1292 | out_baseimg_param = get_option_parameter(param, BLOCK_OPT_BACKING_FILE); | |
1293 | if (out_baseimg_param) { | |
1294 | out_baseimg = out_baseimg_param->value.s; | |
1295 | } | |
1296 | ||
efa84d43 | 1297 | /* Check if compression is supported */ |
eec77d9e | 1298 | if (compress) { |
efa84d43 KW |
1299 | QEMUOptionParameter *encryption = |
1300 | get_option_parameter(param, BLOCK_OPT_ENCRYPT); | |
41521fa4 KW |
1301 | QEMUOptionParameter *preallocation = |
1302 | get_option_parameter(param, BLOCK_OPT_PREALLOC); | |
efa84d43 KW |
1303 | |
1304 | if (!drv->bdrv_write_compressed) { | |
15654a6d | 1305 | error_report("Compression not supported for this file format"); |
c2abccec MK |
1306 | ret = -1; |
1307 | goto out; | |
efa84d43 KW |
1308 | } |
1309 | ||
1310 | if (encryption && encryption->value.n) { | |
15654a6d JS |
1311 | error_report("Compression and encryption not supported at " |
1312 | "the same time"); | |
c2abccec MK |
1313 | ret = -1; |
1314 | goto out; | |
efa84d43 | 1315 | } |
41521fa4 KW |
1316 | |
1317 | if (preallocation && preallocation->value.s | |
1318 | && strcmp(preallocation->value.s, "off")) | |
1319 | { | |
1320 | error_report("Compression and preallocation not supported at " | |
1321 | "the same time"); | |
1322 | ret = -1; | |
1323 | goto out; | |
1324 | } | |
efa84d43 KW |
1325 | } |
1326 | ||
1327 | /* Create the new image */ | |
1328 | ret = bdrv_create(drv, out_filename, param); | |
ea2384d3 FB |
1329 | if (ret < 0) { |
1330 | if (ret == -ENOTSUP) { | |
15654a6d JS |
1331 | error_report("Formatting not supported for file format '%s'", |
1332 | out_fmt); | |
6e9ea0c0 | 1333 | } else if (ret == -EFBIG) { |
15654a6d JS |
1334 | error_report("The image size is too large for file format '%s'", |
1335 | out_fmt); | |
ea2384d3 | 1336 | } else { |
15654a6d JS |
1337 | error_report("%s: error while converting %s: %s", |
1338 | out_filename, out_fmt, strerror(-ret)); | |
ea2384d3 | 1339 | } |
c2abccec | 1340 | goto out; |
ea2384d3 | 1341 | } |
3b46e624 | 1342 | |
661a0f71 | 1343 | flags = BDRV_O_RDWR; |
c3993cdc | 1344 | ret = bdrv_parse_cache_flags(cache, &flags); |
661a0f71 FS |
1345 | if (ret < 0) { |
1346 | error_report("Invalid cache option: %s", cache); | |
1347 | return -1; | |
1348 | } | |
1349 | ||
f382d43a | 1350 | out_bs = bdrv_new_open(out_filename, out_fmt, flags, true, quiet); |
c2abccec MK |
1351 | if (!out_bs) { |
1352 | ret = -1; | |
1353 | goto out; | |
1354 | } | |
ea2384d3 | 1355 | |
926c2d23 AZ |
1356 | bs_i = 0; |
1357 | bs_offset = 0; | |
1358 | bdrv_get_geometry(bs[0], &bs_sectors); | |
bb1c0597 | 1359 | buf = qemu_blockalign(out_bs, IO_BUF_SIZE); |
926c2d23 | 1360 | |
eec77d9e | 1361 | if (compress) { |
c2abccec MK |
1362 | ret = bdrv_get_info(out_bs, &bdi); |
1363 | if (ret < 0) { | |
15654a6d | 1364 | error_report("could not get block driver info"); |
c2abccec MK |
1365 | goto out; |
1366 | } | |
faea38e7 | 1367 | cluster_size = bdi.cluster_size; |
c2abccec | 1368 | if (cluster_size <= 0 || cluster_size > IO_BUF_SIZE) { |
15654a6d | 1369 | error_report("invalid cluster size"); |
c2abccec MK |
1370 | ret = -1; |
1371 | goto out; | |
1372 | } | |
ea2384d3 FB |
1373 | cluster_sectors = cluster_size >> 9; |
1374 | sector_num = 0; | |
6b837bc4 JS |
1375 | |
1376 | nb_sectors = total_sectors; | |
1f710495 KW |
1377 | if (nb_sectors != 0) { |
1378 | local_progress = (float)100 / | |
1379 | (nb_sectors / MIN(nb_sectors, cluster_sectors)); | |
1380 | } | |
6b837bc4 | 1381 | |
ea2384d3 | 1382 | for(;;) { |
926c2d23 AZ |
1383 | int64_t bs_num; |
1384 | int remainder; | |
1385 | uint8_t *buf2; | |
1386 | ||
ea2384d3 FB |
1387 | nb_sectors = total_sectors - sector_num; |
1388 | if (nb_sectors <= 0) | |
1389 | break; | |
1390 | if (nb_sectors >= cluster_sectors) | |
1391 | n = cluster_sectors; | |
1392 | else | |
1393 | n = nb_sectors; | |
926c2d23 AZ |
1394 | |
1395 | bs_num = sector_num - bs_offset; | |
1396 | assert (bs_num >= 0); | |
1397 | remainder = n; | |
1398 | buf2 = buf; | |
1399 | while (remainder > 0) { | |
1400 | int nlow; | |
1401 | while (bs_num == bs_sectors) { | |
1402 | bs_i++; | |
1403 | assert (bs_i < bs_n); | |
1404 | bs_offset += bs_sectors; | |
1405 | bdrv_get_geometry(bs[bs_i], &bs_sectors); | |
1406 | bs_num = 0; | |
0bfcd599 BS |
1407 | /* printf("changing part: sector_num=%" PRId64 ", " |
1408 | "bs_i=%d, bs_offset=%" PRId64 ", bs_sectors=%" PRId64 | |
1409 | "\n", sector_num, bs_i, bs_offset, bs_sectors); */ | |
926c2d23 AZ |
1410 | } |
1411 | assert (bs_num < bs_sectors); | |
1412 | ||
1413 | nlow = (remainder > bs_sectors - bs_num) ? bs_sectors - bs_num : remainder; | |
1414 | ||
c2abccec MK |
1415 | ret = bdrv_read(bs[bs_i], bs_num, buf2, nlow); |
1416 | if (ret < 0) { | |
3fba9d81 SH |
1417 | error_report("error while reading sector %" PRId64 ": %s", |
1418 | bs_num, strerror(-ret)); | |
c2abccec MK |
1419 | goto out; |
1420 | } | |
926c2d23 AZ |
1421 | |
1422 | buf2 += nlow * 512; | |
1423 | bs_num += nlow; | |
1424 | ||
1425 | remainder -= nlow; | |
1426 | } | |
1427 | assert (remainder == 0); | |
1428 | ||
54f106d5 SH |
1429 | if (!buffer_is_zero(buf, n * BDRV_SECTOR_SIZE)) { |
1430 | ret = bdrv_write_compressed(out_bs, sector_num, buf, n); | |
c2abccec | 1431 | if (ret != 0) { |
3fba9d81 SH |
1432 | error_report("error while compressing sector %" PRId64 |
1433 | ": %s", sector_num, strerror(-ret)); | |
c2abccec MK |
1434 | goto out; |
1435 | } | |
ea2384d3 FB |
1436 | } |
1437 | sector_num += n; | |
6b837bc4 | 1438 | qemu_progress_print(local_progress, 100); |
ea2384d3 | 1439 | } |
faea38e7 FB |
1440 | /* signal EOF to align */ |
1441 | bdrv_write_compressed(out_bs, 0, NULL, 0); | |
ea2384d3 | 1442 | } else { |
f2feebbd KW |
1443 | int has_zero_init = bdrv_has_zero_init(out_bs); |
1444 | ||
f58c7b35 | 1445 | sector_num = 0; // total number of sectors converted so far |
6b837bc4 | 1446 | nb_sectors = total_sectors - sector_num; |
1f710495 KW |
1447 | if (nb_sectors != 0) { |
1448 | local_progress = (float)100 / | |
1449 | (nb_sectors / MIN(nb_sectors, IO_BUF_SIZE / 512)); | |
1450 | } | |
6b837bc4 | 1451 | |
ea2384d3 FB |
1452 | for(;;) { |
1453 | nb_sectors = total_sectors - sector_num; | |
b8fb60da | 1454 | if (nb_sectors <= 0) { |
ea2384d3 | 1455 | break; |
b8fb60da JS |
1456 | } |
1457 | if (nb_sectors >= (IO_BUF_SIZE / 512)) { | |
ea2384d3 | 1458 | n = (IO_BUF_SIZE / 512); |
b8fb60da | 1459 | } else { |
ea2384d3 | 1460 | n = nb_sectors; |
b8fb60da | 1461 | } |
926c2d23 AZ |
1462 | |
1463 | while (sector_num - bs_offset >= bs_sectors) { | |
1464 | bs_i ++; | |
1465 | assert (bs_i < bs_n); | |
1466 | bs_offset += bs_sectors; | |
1467 | bdrv_get_geometry(bs[bs_i], &bs_sectors); | |
0bfcd599 BS |
1468 | /* printf("changing part: sector_num=%" PRId64 ", bs_i=%d, " |
1469 | "bs_offset=%" PRId64 ", bs_sectors=%" PRId64 "\n", | |
926c2d23 AZ |
1470 | sector_num, bs_i, bs_offset, bs_sectors); */ |
1471 | } | |
1472 | ||
b8fb60da | 1473 | if (n > bs_offset + bs_sectors - sector_num) { |
926c2d23 | 1474 | n = bs_offset + bs_sectors - sector_num; |
b8fb60da | 1475 | } |
926c2d23 | 1476 | |
f2feebbd | 1477 | if (has_zero_init) { |
d032044f AS |
1478 | /* If the output image is being created as a copy on write image, |
1479 | assume that sectors which are unallocated in the input image | |
1480 | are present in both the output's and input's base images (no | |
1481 | need to copy them). */ | |
1482 | if (out_baseimg) { | |
1483 | if (!bdrv_is_allocated(bs[bs_i], sector_num - bs_offset, | |
1484 | n, &n1)) { | |
1485 | sector_num += n1; | |
1486 | continue; | |
1487 | } | |
1488 | /* The next 'n1' sectors are allocated in the input image. Copy | |
1489 | only those as they may be followed by unallocated sectors. */ | |
1490 | n = n1; | |
93c65b47 | 1491 | } |
93c65b47 AL |
1492 | } else { |
1493 | n1 = n; | |
f58c7b35 TS |
1494 | } |
1495 | ||
c2abccec MK |
1496 | ret = bdrv_read(bs[bs_i], sector_num - bs_offset, buf, n); |
1497 | if (ret < 0) { | |
3fba9d81 SH |
1498 | error_report("error while reading sector %" PRId64 ": %s", |
1499 | sector_num - bs_offset, strerror(-ret)); | |
c2abccec MK |
1500 | goto out; |
1501 | } | |
ea2384d3 FB |
1502 | /* NOTE: at the same time we convert, we do not write zero |
1503 | sectors to have a chance to compress the image. Ideally, we | |
1504 | should add a specific call to have the info to go faster */ | |
1505 | buf1 = buf; | |
1506 | while (n > 0) { | |
f58c7b35 TS |
1507 | /* If the output image is being created as a copy on write image, |
1508 | copy all sectors even the ones containing only NUL bytes, | |
93c65b47 AL |
1509 | because they may differ from the sectors in the base image. |
1510 | ||
1511 | If the output is to a host device, we also write out | |
1512 | sectors that are entirely 0, since whatever data was | |
1513 | already there is garbage, not 0s. */ | |
f2feebbd | 1514 | if (!has_zero_init || out_baseimg || |
a22f123c | 1515 | is_allocated_sectors_min(buf1, n, &n1, min_sparse)) { |
c2abccec MK |
1516 | ret = bdrv_write(out_bs, sector_num, buf1, n1); |
1517 | if (ret < 0) { | |
3fba9d81 SH |
1518 | error_report("error while writing sector %" PRId64 |
1519 | ": %s", sector_num, strerror(-ret)); | |
c2abccec MK |
1520 | goto out; |
1521 | } | |
ea2384d3 FB |
1522 | } |
1523 | sector_num += n1; | |
1524 | n -= n1; | |
1525 | buf1 += n1 * 512; | |
1526 | } | |
6b837bc4 | 1527 | qemu_progress_print(local_progress, 100); |
ea2384d3 FB |
1528 | } |
1529 | } | |
c2abccec | 1530 | out: |
6b837bc4 | 1531 | qemu_progress_end(); |
c2abccec MK |
1532 | free_option_parameters(create_options); |
1533 | free_option_parameters(param); | |
bb1c0597 | 1534 | qemu_vfree(buf); |
c2abccec MK |
1535 | if (out_bs) { |
1536 | bdrv_delete(out_bs); | |
1537 | } | |
31ca34b8 JS |
1538 | if (bs) { |
1539 | for (bs_i = 0; bs_i < bs_n; bs_i++) { | |
1540 | if (bs[bs_i]) { | |
1541 | bdrv_delete(bs[bs_i]); | |
1542 | } | |
c2abccec | 1543 | } |
7267c094 | 1544 | g_free(bs); |
c2abccec | 1545 | } |
c2abccec MK |
1546 | if (ret) { |
1547 | return 1; | |
1548 | } | |
ea2384d3 FB |
1549 | return 0; |
1550 | } | |
1551 | ||
57d1a2b6 | 1552 | |
faea38e7 FB |
1553 | static void dump_snapshots(BlockDriverState *bs) |
1554 | { | |
1555 | QEMUSnapshotInfo *sn_tab, *sn; | |
1556 | int nb_sns, i; | |
faea38e7 FB |
1557 | |
1558 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
1559 | if (nb_sns <= 0) | |
1560 | return; | |
1561 | printf("Snapshot list:\n"); | |
5b917044 WX |
1562 | bdrv_snapshot_dump(fprintf, stdout, NULL); |
1563 | printf("\n"); | |
faea38e7 FB |
1564 | for(i = 0; i < nb_sns; i++) { |
1565 | sn = &sn_tab[i]; | |
5b917044 WX |
1566 | bdrv_snapshot_dump(fprintf, stdout, sn); |
1567 | printf("\n"); | |
faea38e7 | 1568 | } |
7267c094 | 1569 | g_free(sn_tab); |
faea38e7 FB |
1570 | } |
1571 | ||
9699bf0d SH |
1572 | static void dump_json_image_info_list(ImageInfoList *list) |
1573 | { | |
1574 | Error *errp = NULL; | |
1575 | QString *str; | |
1576 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
1577 | QObject *obj; | |
1578 | visit_type_ImageInfoList(qmp_output_get_visitor(ov), | |
1579 | &list, NULL, &errp); | |
1580 | obj = qmp_output_get_qobject(ov); | |
1581 | str = qobject_to_json_pretty(obj); | |
1582 | assert(str != NULL); | |
1583 | printf("%s\n", qstring_get_str(str)); | |
1584 | qobject_decref(obj); | |
1585 | qmp_output_visitor_cleanup(ov); | |
1586 | QDECREF(str); | |
1587 | } | |
1588 | ||
c054b3fd BC |
1589 | static void dump_json_image_info(ImageInfo *info) |
1590 | { | |
1591 | Error *errp = NULL; | |
1592 | QString *str; | |
1593 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
1594 | QObject *obj; | |
1595 | visit_type_ImageInfo(qmp_output_get_visitor(ov), | |
1596 | &info, NULL, &errp); | |
1597 | obj = qmp_output_get_qobject(ov); | |
1598 | str = qobject_to_json_pretty(obj); | |
1599 | assert(str != NULL); | |
1600 | printf("%s\n", qstring_get_str(str)); | |
1601 | qobject_decref(obj); | |
1602 | qmp_output_visitor_cleanup(ov); | |
1603 | QDECREF(str); | |
1604 | } | |
1605 | ||
9699bf0d SH |
1606 | static void dump_human_image_info_list(ImageInfoList *list) |
1607 | { | |
1608 | ImageInfoList *elem; | |
1609 | bool delim = false; | |
1610 | ||
1611 | for (elem = list; elem; elem = elem->next) { | |
1612 | if (delim) { | |
1613 | printf("\n"); | |
1614 | } | |
1615 | delim = true; | |
1616 | ||
5b917044 | 1617 | bdrv_image_info_dump(fprintf, stdout, elem->value); |
9699bf0d SH |
1618 | } |
1619 | } | |
1620 | ||
1621 | static gboolean str_equal_func(gconstpointer a, gconstpointer b) | |
1622 | { | |
1623 | return strcmp(a, b) == 0; | |
1624 | } | |
1625 | ||
1626 | /** | |
1627 | * Open an image file chain and return an ImageInfoList | |
1628 | * | |
1629 | * @filename: topmost image filename | |
1630 | * @fmt: topmost image format (may be NULL to autodetect) | |
1631 | * @chain: true - enumerate entire backing file chain | |
1632 | * false - only topmost image file | |
1633 | * | |
1634 | * Returns a list of ImageInfo objects or NULL if there was an error opening an | |
1635 | * image file. If there was an error a message will have been printed to | |
1636 | * stderr. | |
1637 | */ | |
1638 | static ImageInfoList *collect_image_info_list(const char *filename, | |
1639 | const char *fmt, | |
1640 | bool chain) | |
1641 | { | |
1642 | ImageInfoList *head = NULL; | |
1643 | ImageInfoList **last = &head; | |
1644 | GHashTable *filenames; | |
1645 | ||
1646 | filenames = g_hash_table_new_full(g_str_hash, str_equal_func, NULL, NULL); | |
1647 | ||
1648 | while (filename) { | |
1649 | BlockDriverState *bs; | |
1650 | ImageInfo *info; | |
1651 | ImageInfoList *elem; | |
1652 | ||
1653 | if (g_hash_table_lookup_extended(filenames, filename, NULL, NULL)) { | |
1654 | error_report("Backing file '%s' creates an infinite loop.", | |
1655 | filename); | |
1656 | goto err; | |
1657 | } | |
1658 | g_hash_table_insert(filenames, (gpointer)filename, NULL); | |
1659 | ||
1660 | bs = bdrv_new_open(filename, fmt, BDRV_O_FLAGS | BDRV_O_NO_BACKING, | |
f382d43a | 1661 | false, false); |
9699bf0d SH |
1662 | if (!bs) { |
1663 | goto err; | |
1664 | } | |
1665 | ||
1666 | info = g_new0(ImageInfo, 1); | |
f364ec65 WX |
1667 | bdrv_collect_image_info(bs, info, filename); |
1668 | bdrv_collect_snapshots(bs, info); | |
9699bf0d SH |
1669 | |
1670 | elem = g_new0(ImageInfoList, 1); | |
1671 | elem->value = info; | |
1672 | *last = elem; | |
1673 | last = &elem->next; | |
1674 | ||
1675 | bdrv_delete(bs); | |
1676 | ||
1677 | filename = fmt = NULL; | |
1678 | if (chain) { | |
1679 | if (info->has_full_backing_filename) { | |
1680 | filename = info->full_backing_filename; | |
1681 | } else if (info->has_backing_filename) { | |
1682 | filename = info->backing_filename; | |
1683 | } | |
1684 | if (info->has_backing_filename_format) { | |
1685 | fmt = info->backing_filename_format; | |
1686 | } | |
1687 | } | |
1688 | } | |
1689 | g_hash_table_destroy(filenames); | |
1690 | return head; | |
1691 | ||
1692 | err: | |
1693 | qapi_free_ImageInfoList(head); | |
1694 | g_hash_table_destroy(filenames); | |
1695 | return NULL; | |
1696 | } | |
1697 | ||
c054b3fd BC |
1698 | static int img_info(int argc, char **argv) |
1699 | { | |
1700 | int c; | |
1701 | OutputFormat output_format = OFORMAT_HUMAN; | |
9699bf0d | 1702 | bool chain = false; |
c054b3fd | 1703 | const char *filename, *fmt, *output; |
9699bf0d | 1704 | ImageInfoList *list; |
c054b3fd | 1705 | |
ea2384d3 | 1706 | fmt = NULL; |
c054b3fd | 1707 | output = NULL; |
ea2384d3 | 1708 | for(;;) { |
c054b3fd BC |
1709 | int option_index = 0; |
1710 | static const struct option long_options[] = { | |
1711 | {"help", no_argument, 0, 'h'}, | |
1712 | {"format", required_argument, 0, 'f'}, | |
1713 | {"output", required_argument, 0, OPTION_OUTPUT}, | |
9699bf0d | 1714 | {"backing-chain", no_argument, 0, OPTION_BACKING_CHAIN}, |
c054b3fd BC |
1715 | {0, 0, 0, 0} |
1716 | }; | |
1717 | c = getopt_long(argc, argv, "f:h", | |
1718 | long_options, &option_index); | |
b8fb60da | 1719 | if (c == -1) { |
ea2384d3 | 1720 | break; |
b8fb60da | 1721 | } |
ea2384d3 | 1722 | switch(c) { |
ef87394c | 1723 | case '?': |
ea2384d3 FB |
1724 | case 'h': |
1725 | help(); | |
1726 | break; | |
1727 | case 'f': | |
1728 | fmt = optarg; | |
1729 | break; | |
c054b3fd BC |
1730 | case OPTION_OUTPUT: |
1731 | output = optarg; | |
1732 | break; | |
9699bf0d SH |
1733 | case OPTION_BACKING_CHAIN: |
1734 | chain = true; | |
1735 | break; | |
ea2384d3 FB |
1736 | } |
1737 | } | |
b8fb60da | 1738 | if (optind >= argc) { |
ea2384d3 | 1739 | help(); |
b8fb60da | 1740 | } |
ea2384d3 FB |
1741 | filename = argv[optind++]; |
1742 | ||
c054b3fd BC |
1743 | if (output && !strcmp(output, "json")) { |
1744 | output_format = OFORMAT_JSON; | |
1745 | } else if (output && !strcmp(output, "human")) { | |
1746 | output_format = OFORMAT_HUMAN; | |
1747 | } else if (output) { | |
1748 | error_report("--output must be used with human or json as argument."); | |
c2abccec MK |
1749 | return 1; |
1750 | } | |
c054b3fd | 1751 | |
9699bf0d SH |
1752 | list = collect_image_info_list(filename, fmt, chain); |
1753 | if (!list) { | |
c2abccec | 1754 | return 1; |
faea38e7 | 1755 | } |
c054b3fd | 1756 | |
c054b3fd BC |
1757 | switch (output_format) { |
1758 | case OFORMAT_HUMAN: | |
9699bf0d | 1759 | dump_human_image_info_list(list); |
c054b3fd BC |
1760 | break; |
1761 | case OFORMAT_JSON: | |
9699bf0d SH |
1762 | if (chain) { |
1763 | dump_json_image_info_list(list); | |
1764 | } else { | |
1765 | dump_json_image_info(list->value); | |
1766 | } | |
c054b3fd | 1767 | break; |
faea38e7 | 1768 | } |
c054b3fd | 1769 | |
9699bf0d | 1770 | qapi_free_ImageInfoList(list); |
ea2384d3 FB |
1771 | return 0; |
1772 | } | |
1773 | ||
f7b4a940 AL |
1774 | #define SNAPSHOT_LIST 1 |
1775 | #define SNAPSHOT_CREATE 2 | |
1776 | #define SNAPSHOT_APPLY 3 | |
1777 | #define SNAPSHOT_DELETE 4 | |
1778 | ||
153859be | 1779 | static int img_snapshot(int argc, char **argv) |
f7b4a940 AL |
1780 | { |
1781 | BlockDriverState *bs; | |
1782 | QEMUSnapshotInfo sn; | |
1783 | char *filename, *snapshot_name = NULL; | |
c2abccec | 1784 | int c, ret = 0, bdrv_oflags; |
f7b4a940 AL |
1785 | int action = 0; |
1786 | qemu_timeval tv; | |
f382d43a | 1787 | bool quiet = false; |
f7b4a940 | 1788 | |
710da702 | 1789 | bdrv_oflags = BDRV_O_FLAGS | BDRV_O_RDWR; |
f7b4a940 AL |
1790 | /* Parse commandline parameters */ |
1791 | for(;;) { | |
f382d43a | 1792 | c = getopt(argc, argv, "la:c:d:hq"); |
b8fb60da | 1793 | if (c == -1) { |
f7b4a940 | 1794 | break; |
b8fb60da | 1795 | } |
f7b4a940 | 1796 | switch(c) { |
ef87394c | 1797 | case '?': |
f7b4a940 AL |
1798 | case 'h': |
1799 | help(); | |
153859be | 1800 | return 0; |
f7b4a940 AL |
1801 | case 'l': |
1802 | if (action) { | |
1803 | help(); | |
153859be | 1804 | return 0; |
f7b4a940 AL |
1805 | } |
1806 | action = SNAPSHOT_LIST; | |
f5edb014 | 1807 | bdrv_oflags &= ~BDRV_O_RDWR; /* no need for RW */ |
f7b4a940 AL |
1808 | break; |
1809 | case 'a': | |
1810 | if (action) { | |
1811 | help(); | |
153859be | 1812 | return 0; |
f7b4a940 AL |
1813 | } |
1814 | action = SNAPSHOT_APPLY; | |
1815 | snapshot_name = optarg; | |
1816 | break; | |
1817 | case 'c': | |
1818 | if (action) { | |
1819 | help(); | |
153859be | 1820 | return 0; |
f7b4a940 AL |
1821 | } |
1822 | action = SNAPSHOT_CREATE; | |
1823 | snapshot_name = optarg; | |
1824 | break; | |
1825 | case 'd': | |
1826 | if (action) { | |
1827 | help(); | |
153859be | 1828 | return 0; |
f7b4a940 AL |
1829 | } |
1830 | action = SNAPSHOT_DELETE; | |
1831 | snapshot_name = optarg; | |
1832 | break; | |
f382d43a MR |
1833 | case 'q': |
1834 | quiet = true; | |
1835 | break; | |
f7b4a940 AL |
1836 | } |
1837 | } | |
1838 | ||
b8fb60da | 1839 | if (optind >= argc) { |
f7b4a940 | 1840 | help(); |
b8fb60da | 1841 | } |
f7b4a940 AL |
1842 | filename = argv[optind++]; |
1843 | ||
1844 | /* Open the image */ | |
f382d43a | 1845 | bs = bdrv_new_open(filename, NULL, bdrv_oflags, true, quiet); |
c2abccec MK |
1846 | if (!bs) { |
1847 | return 1; | |
1848 | } | |
f7b4a940 AL |
1849 | |
1850 | /* Perform the requested action */ | |
1851 | switch(action) { | |
1852 | case SNAPSHOT_LIST: | |
1853 | dump_snapshots(bs); | |
1854 | break; | |
1855 | ||
1856 | case SNAPSHOT_CREATE: | |
1857 | memset(&sn, 0, sizeof(sn)); | |
1858 | pstrcpy(sn.name, sizeof(sn.name), snapshot_name); | |
1859 | ||
1860 | qemu_gettimeofday(&tv); | |
1861 | sn.date_sec = tv.tv_sec; | |
1862 | sn.date_nsec = tv.tv_usec * 1000; | |
1863 | ||
1864 | ret = bdrv_snapshot_create(bs, &sn); | |
b8fb60da | 1865 | if (ret) { |
15654a6d | 1866 | error_report("Could not create snapshot '%s': %d (%s)", |
f7b4a940 | 1867 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 1868 | } |
f7b4a940 AL |
1869 | break; |
1870 | ||
1871 | case SNAPSHOT_APPLY: | |
1872 | ret = bdrv_snapshot_goto(bs, snapshot_name); | |
b8fb60da | 1873 | if (ret) { |
15654a6d | 1874 | error_report("Could not apply snapshot '%s': %d (%s)", |
f7b4a940 | 1875 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 1876 | } |
f7b4a940 AL |
1877 | break; |
1878 | ||
1879 | case SNAPSHOT_DELETE: | |
1880 | ret = bdrv_snapshot_delete(bs, snapshot_name); | |
b8fb60da | 1881 | if (ret) { |
15654a6d | 1882 | error_report("Could not delete snapshot '%s': %d (%s)", |
f7b4a940 | 1883 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 1884 | } |
f7b4a940 AL |
1885 | break; |
1886 | } | |
1887 | ||
1888 | /* Cleanup */ | |
1889 | bdrv_delete(bs); | |
c2abccec MK |
1890 | if (ret) { |
1891 | return 1; | |
1892 | } | |
153859be | 1893 | return 0; |
f7b4a940 AL |
1894 | } |
1895 | ||
3e85c6fd KW |
1896 | static int img_rebase(int argc, char **argv) |
1897 | { | |
c2abccec | 1898 | BlockDriverState *bs, *bs_old_backing = NULL, *bs_new_backing = NULL; |
f163d073 | 1899 | BlockDriver *old_backing_drv, *new_backing_drv; |
3e85c6fd | 1900 | char *filename; |
661a0f71 | 1901 | const char *fmt, *cache, *out_basefmt, *out_baseimg; |
3e85c6fd KW |
1902 | int c, flags, ret; |
1903 | int unsafe = 0; | |
6b837bc4 | 1904 | int progress = 0; |
f382d43a | 1905 | bool quiet = false; |
3e85c6fd KW |
1906 | |
1907 | /* Parse commandline parameters */ | |
e53dbee0 | 1908 | fmt = NULL; |
661a0f71 | 1909 | cache = BDRV_DEFAULT_CACHE; |
3e85c6fd KW |
1910 | out_baseimg = NULL; |
1911 | out_basefmt = NULL; | |
3e85c6fd | 1912 | for(;;) { |
f382d43a | 1913 | c = getopt(argc, argv, "uhf:F:b:pt:q"); |
b8fb60da | 1914 | if (c == -1) { |
3e85c6fd | 1915 | break; |
b8fb60da | 1916 | } |
3e85c6fd | 1917 | switch(c) { |
ef87394c | 1918 | case '?': |
3e85c6fd KW |
1919 | case 'h': |
1920 | help(); | |
1921 | return 0; | |
e53dbee0 KW |
1922 | case 'f': |
1923 | fmt = optarg; | |
1924 | break; | |
3e85c6fd KW |
1925 | case 'F': |
1926 | out_basefmt = optarg; | |
1927 | break; | |
1928 | case 'b': | |
1929 | out_baseimg = optarg; | |
1930 | break; | |
1931 | case 'u': | |
1932 | unsafe = 1; | |
1933 | break; | |
6b837bc4 JS |
1934 | case 'p': |
1935 | progress = 1; | |
1936 | break; | |
661a0f71 FS |
1937 | case 't': |
1938 | cache = optarg; | |
1939 | break; | |
f382d43a MR |
1940 | case 'q': |
1941 | quiet = true; | |
1942 | break; | |
3e85c6fd KW |
1943 | } |
1944 | } | |
1945 | ||
f382d43a MR |
1946 | if (quiet) { |
1947 | progress = 0; | |
1948 | } | |
1949 | ||
9a9d9dba | 1950 | if ((optind >= argc) || (!unsafe && !out_baseimg)) { |
3e85c6fd | 1951 | help(); |
b8fb60da | 1952 | } |
3e85c6fd KW |
1953 | filename = argv[optind++]; |
1954 | ||
6b837bc4 JS |
1955 | qemu_progress_init(progress, 2.0); |
1956 | qemu_progress_print(0, 100); | |
1957 | ||
661a0f71 | 1958 | flags = BDRV_O_RDWR | (unsafe ? BDRV_O_NO_BACKING : 0); |
c3993cdc | 1959 | ret = bdrv_parse_cache_flags(cache, &flags); |
661a0f71 FS |
1960 | if (ret < 0) { |
1961 | error_report("Invalid cache option: %s", cache); | |
1962 | return -1; | |
1963 | } | |
1964 | ||
3e85c6fd KW |
1965 | /* |
1966 | * Open the images. | |
1967 | * | |
1968 | * Ignore the old backing file for unsafe rebase in case we want to correct | |
1969 | * the reference to a renamed or moved backing file. | |
1970 | */ | |
f382d43a | 1971 | bs = bdrv_new_open(filename, fmt, flags, true, quiet); |
c2abccec MK |
1972 | if (!bs) { |
1973 | return 1; | |
1974 | } | |
3e85c6fd KW |
1975 | |
1976 | /* Find the right drivers for the backing files */ | |
1977 | old_backing_drv = NULL; | |
1978 | new_backing_drv = NULL; | |
1979 | ||
1980 | if (!unsafe && bs->backing_format[0] != '\0') { | |
1981 | old_backing_drv = bdrv_find_format(bs->backing_format); | |
1982 | if (old_backing_drv == NULL) { | |
15654a6d | 1983 | error_report("Invalid format name: '%s'", bs->backing_format); |
c2abccec MK |
1984 | ret = -1; |
1985 | goto out; | |
3e85c6fd KW |
1986 | } |
1987 | } | |
1988 | ||
1989 | if (out_basefmt != NULL) { | |
1990 | new_backing_drv = bdrv_find_format(out_basefmt); | |
1991 | if (new_backing_drv == NULL) { | |
15654a6d | 1992 | error_report("Invalid format name: '%s'", out_basefmt); |
c2abccec MK |
1993 | ret = -1; |
1994 | goto out; | |
3e85c6fd KW |
1995 | } |
1996 | } | |
1997 | ||
1998 | /* For safe rebasing we need to compare old and new backing file */ | |
1999 | if (unsafe) { | |
2000 | /* Make the compiler happy */ | |
2001 | bs_old_backing = NULL; | |
2002 | bs_new_backing = NULL; | |
2003 | } else { | |
2004 | char backing_name[1024]; | |
2005 | ||
2006 | bs_old_backing = bdrv_new("old_backing"); | |
2007 | bdrv_get_backing_filename(bs, backing_name, sizeof(backing_name)); | |
de9c0cec | 2008 | ret = bdrv_open(bs_old_backing, backing_name, NULL, BDRV_O_FLAGS, |
c2abccec MK |
2009 | old_backing_drv); |
2010 | if (ret) { | |
15654a6d | 2011 | error_report("Could not open old backing file '%s'", backing_name); |
c2abccec | 2012 | goto out; |
3e85c6fd | 2013 | } |
a616673d AB |
2014 | if (out_baseimg[0]) { |
2015 | bs_new_backing = bdrv_new("new_backing"); | |
de9c0cec | 2016 | ret = bdrv_open(bs_new_backing, out_baseimg, NULL, BDRV_O_FLAGS, |
c2abccec | 2017 | new_backing_drv); |
a616673d AB |
2018 | if (ret) { |
2019 | error_report("Could not open new backing file '%s'", | |
2020 | out_baseimg); | |
2021 | goto out; | |
2022 | } | |
3e85c6fd KW |
2023 | } |
2024 | } | |
2025 | ||
2026 | /* | |
2027 | * Check each unallocated cluster in the COW file. If it is unallocated, | |
2028 | * accesses go to the backing file. We must therefore compare this cluster | |
2029 | * in the old and new backing file, and if they differ we need to copy it | |
2030 | * from the old backing file into the COW file. | |
2031 | * | |
2032 | * If qemu-img crashes during this step, no harm is done. The content of | |
2033 | * the image is the same as the original one at any time. | |
2034 | */ | |
2035 | if (!unsafe) { | |
2036 | uint64_t num_sectors; | |
87a1b3e3 | 2037 | uint64_t old_backing_num_sectors; |
a616673d | 2038 | uint64_t new_backing_num_sectors = 0; |
3e85c6fd | 2039 | uint64_t sector; |
cc60e327 | 2040 | int n; |
d6771bfa T |
2041 | uint8_t * buf_old; |
2042 | uint8_t * buf_new; | |
1f710495 | 2043 | float local_progress = 0; |
d6771bfa | 2044 | |
bb1c0597 KW |
2045 | buf_old = qemu_blockalign(bs, IO_BUF_SIZE); |
2046 | buf_new = qemu_blockalign(bs, IO_BUF_SIZE); | |
3e85c6fd KW |
2047 | |
2048 | bdrv_get_geometry(bs, &num_sectors); | |
87a1b3e3 | 2049 | bdrv_get_geometry(bs_old_backing, &old_backing_num_sectors); |
a616673d AB |
2050 | if (bs_new_backing) { |
2051 | bdrv_get_geometry(bs_new_backing, &new_backing_num_sectors); | |
2052 | } | |
3e85c6fd | 2053 | |
1f710495 KW |
2054 | if (num_sectors != 0) { |
2055 | local_progress = (float)100 / | |
2056 | (num_sectors / MIN(num_sectors, IO_BUF_SIZE / 512)); | |
2057 | } | |
2058 | ||
3e85c6fd KW |
2059 | for (sector = 0; sector < num_sectors; sector += n) { |
2060 | ||
2061 | /* How many sectors can we handle with the next read? */ | |
2062 | if (sector + (IO_BUF_SIZE / 512) <= num_sectors) { | |
2063 | n = (IO_BUF_SIZE / 512); | |
2064 | } else { | |
2065 | n = num_sectors - sector; | |
2066 | } | |
2067 | ||
2068 | /* If the cluster is allocated, we don't need to take action */ | |
cc60e327 KW |
2069 | ret = bdrv_is_allocated(bs, sector, n, &n); |
2070 | if (ret) { | |
3e85c6fd KW |
2071 | continue; |
2072 | } | |
2073 | ||
87a1b3e3 KW |
2074 | /* |
2075 | * Read old and new backing file and take into consideration that | |
2076 | * backing files may be smaller than the COW image. | |
2077 | */ | |
2078 | if (sector >= old_backing_num_sectors) { | |
2079 | memset(buf_old, 0, n * BDRV_SECTOR_SIZE); | |
2080 | } else { | |
2081 | if (sector + n > old_backing_num_sectors) { | |
2082 | n = old_backing_num_sectors - sector; | |
2083 | } | |
2084 | ||
2085 | ret = bdrv_read(bs_old_backing, sector, buf_old, n); | |
2086 | if (ret < 0) { | |
2087 | error_report("error while reading from old backing file"); | |
2088 | goto out; | |
2089 | } | |
3e85c6fd | 2090 | } |
87a1b3e3 | 2091 | |
a616673d | 2092 | if (sector >= new_backing_num_sectors || !bs_new_backing) { |
87a1b3e3 KW |
2093 | memset(buf_new, 0, n * BDRV_SECTOR_SIZE); |
2094 | } else { | |
2095 | if (sector + n > new_backing_num_sectors) { | |
2096 | n = new_backing_num_sectors - sector; | |
2097 | } | |
2098 | ||
2099 | ret = bdrv_read(bs_new_backing, sector, buf_new, n); | |
2100 | if (ret < 0) { | |
2101 | error_report("error while reading from new backing file"); | |
2102 | goto out; | |
2103 | } | |
3e85c6fd KW |
2104 | } |
2105 | ||
2106 | /* If they differ, we need to write to the COW file */ | |
2107 | uint64_t written = 0; | |
2108 | ||
2109 | while (written < n) { | |
2110 | int pnum; | |
2111 | ||
2112 | if (compare_sectors(buf_old + written * 512, | |
60b1bd4f | 2113 | buf_new + written * 512, n - written, &pnum)) |
3e85c6fd KW |
2114 | { |
2115 | ret = bdrv_write(bs, sector + written, | |
2116 | buf_old + written * 512, pnum); | |
2117 | if (ret < 0) { | |
15654a6d | 2118 | error_report("Error while writing to COW image: %s", |
3e85c6fd | 2119 | strerror(-ret)); |
c2abccec | 2120 | goto out; |
3e85c6fd KW |
2121 | } |
2122 | } | |
2123 | ||
2124 | written += pnum; | |
2125 | } | |
6b837bc4 | 2126 | qemu_progress_print(local_progress, 100); |
3e85c6fd | 2127 | } |
d6771bfa | 2128 | |
bb1c0597 KW |
2129 | qemu_vfree(buf_old); |
2130 | qemu_vfree(buf_new); | |
3e85c6fd KW |
2131 | } |
2132 | ||
2133 | /* | |
2134 | * Change the backing file. All clusters that are different from the old | |
2135 | * backing file are overwritten in the COW file now, so the visible content | |
2136 | * doesn't change when we switch the backing file. | |
2137 | */ | |
a616673d AB |
2138 | if (out_baseimg && *out_baseimg) { |
2139 | ret = bdrv_change_backing_file(bs, out_baseimg, out_basefmt); | |
2140 | } else { | |
2141 | ret = bdrv_change_backing_file(bs, NULL, NULL); | |
2142 | } | |
2143 | ||
3e85c6fd | 2144 | if (ret == -ENOSPC) { |
15654a6d JS |
2145 | error_report("Could not change the backing file to '%s': No " |
2146 | "space left in the file header", out_baseimg); | |
3e85c6fd | 2147 | } else if (ret < 0) { |
15654a6d | 2148 | error_report("Could not change the backing file to '%s': %s", |
3e85c6fd KW |
2149 | out_baseimg, strerror(-ret)); |
2150 | } | |
2151 | ||
6b837bc4 | 2152 | qemu_progress_print(100, 0); |
3e85c6fd KW |
2153 | /* |
2154 | * TODO At this point it is possible to check if any clusters that are | |
2155 | * allocated in the COW file are the same in the backing file. If so, they | |
2156 | * could be dropped from the COW file. Don't do this before switching the | |
2157 | * backing file, in case of a crash this would lead to corruption. | |
2158 | */ | |
c2abccec | 2159 | out: |
6b837bc4 | 2160 | qemu_progress_end(); |
3e85c6fd KW |
2161 | /* Cleanup */ |
2162 | if (!unsafe) { | |
eb863add KW |
2163 | if (bs_old_backing != NULL) { |
2164 | bdrv_delete(bs_old_backing); | |
2165 | } | |
2166 | if (bs_new_backing != NULL) { | |
2167 | bdrv_delete(bs_new_backing); | |
2168 | } | |
3e85c6fd KW |
2169 | } |
2170 | ||
2171 | bdrv_delete(bs); | |
c2abccec MK |
2172 | if (ret) { |
2173 | return 1; | |
2174 | } | |
3e85c6fd KW |
2175 | return 0; |
2176 | } | |
2177 | ||
ae6b0ed6 SH |
2178 | static int img_resize(int argc, char **argv) |
2179 | { | |
2180 | int c, ret, relative; | |
2181 | const char *filename, *fmt, *size; | |
2182 | int64_t n, total_size; | |
f382d43a | 2183 | bool quiet = false; |
2a81998a | 2184 | BlockDriverState *bs = NULL; |
20caf0f7 DXW |
2185 | QemuOpts *param; |
2186 | static QemuOptsList resize_options = { | |
2187 | .name = "resize_options", | |
2188 | .head = QTAILQ_HEAD_INITIALIZER(resize_options.head), | |
2189 | .desc = { | |
2190 | { | |
2191 | .name = BLOCK_OPT_SIZE, | |
2192 | .type = QEMU_OPT_SIZE, | |
2193 | .help = "Virtual disk size" | |
2194 | }, { | |
2195 | /* end of list */ | |
2196 | } | |
ae6b0ed6 | 2197 | }, |
ae6b0ed6 SH |
2198 | }; |
2199 | ||
e80fec7f KW |
2200 | /* Remove size from argv manually so that negative numbers are not treated |
2201 | * as options by getopt. */ | |
2202 | if (argc < 3) { | |
2203 | help(); | |
2204 | return 1; | |
2205 | } | |
2206 | ||
2207 | size = argv[--argc]; | |
2208 | ||
2209 | /* Parse getopt arguments */ | |
ae6b0ed6 SH |
2210 | fmt = NULL; |
2211 | for(;;) { | |
f382d43a | 2212 | c = getopt(argc, argv, "f:hq"); |
ae6b0ed6 SH |
2213 | if (c == -1) { |
2214 | break; | |
2215 | } | |
2216 | switch(c) { | |
ef87394c | 2217 | case '?': |
ae6b0ed6 SH |
2218 | case 'h': |
2219 | help(); | |
2220 | break; | |
2221 | case 'f': | |
2222 | fmt = optarg; | |
2223 | break; | |
f382d43a MR |
2224 | case 'q': |
2225 | quiet = true; | |
2226 | break; | |
ae6b0ed6 SH |
2227 | } |
2228 | } | |
e80fec7f | 2229 | if (optind >= argc) { |
ae6b0ed6 SH |
2230 | help(); |
2231 | } | |
2232 | filename = argv[optind++]; | |
ae6b0ed6 SH |
2233 | |
2234 | /* Choose grow, shrink, or absolute resize mode */ | |
2235 | switch (size[0]) { | |
2236 | case '+': | |
2237 | relative = 1; | |
2238 | size++; | |
2239 | break; | |
2240 | case '-': | |
2241 | relative = -1; | |
2242 | size++; | |
2243 | break; | |
2244 | default: | |
2245 | relative = 0; | |
2246 | break; | |
2247 | } | |
2248 | ||
2249 | /* Parse size */ | |
e478b448 | 2250 | param = qemu_opts_create_nofail(&resize_options); |
20caf0f7 | 2251 | if (qemu_opt_set(param, BLOCK_OPT_SIZE, size)) { |
ae6b0ed6 | 2252 | /* Error message already printed when size parsing fails */ |
2a81998a | 2253 | ret = -1; |
20caf0f7 | 2254 | qemu_opts_del(param); |
2a81998a | 2255 | goto out; |
ae6b0ed6 | 2256 | } |
20caf0f7 DXW |
2257 | n = qemu_opt_get_size(param, BLOCK_OPT_SIZE, 0); |
2258 | qemu_opts_del(param); | |
ae6b0ed6 | 2259 | |
f382d43a | 2260 | bs = bdrv_new_open(filename, fmt, BDRV_O_FLAGS | BDRV_O_RDWR, true, quiet); |
c2abccec | 2261 | if (!bs) { |
2a81998a JS |
2262 | ret = -1; |
2263 | goto out; | |
c2abccec | 2264 | } |
ae6b0ed6 SH |
2265 | |
2266 | if (relative) { | |
2267 | total_size = bdrv_getlength(bs) + n * relative; | |
2268 | } else { | |
2269 | total_size = n; | |
2270 | } | |
2271 | if (total_size <= 0) { | |
15654a6d | 2272 | error_report("New image size must be positive"); |
c2abccec MK |
2273 | ret = -1; |
2274 | goto out; | |
ae6b0ed6 SH |
2275 | } |
2276 | ||
2277 | ret = bdrv_truncate(bs, total_size); | |
2278 | switch (ret) { | |
2279 | case 0: | |
f382d43a | 2280 | qprintf(quiet, "Image resized.\n"); |
ae6b0ed6 SH |
2281 | break; |
2282 | case -ENOTSUP: | |
259b2173 | 2283 | error_report("This image does not support resize"); |
ae6b0ed6 SH |
2284 | break; |
2285 | case -EACCES: | |
15654a6d | 2286 | error_report("Image is read-only"); |
ae6b0ed6 SH |
2287 | break; |
2288 | default: | |
15654a6d | 2289 | error_report("Error resizing image (%d)", -ret); |
ae6b0ed6 SH |
2290 | break; |
2291 | } | |
c2abccec | 2292 | out: |
2a81998a JS |
2293 | if (bs) { |
2294 | bdrv_delete(bs); | |
2295 | } | |
c2abccec MK |
2296 | if (ret) { |
2297 | return 1; | |
2298 | } | |
ae6b0ed6 SH |
2299 | return 0; |
2300 | } | |
2301 | ||
c227f099 | 2302 | static const img_cmd_t img_cmds[] = { |
153859be SB |
2303 | #define DEF(option, callback, arg_string) \ |
2304 | { option, callback }, | |
2305 | #include "qemu-img-cmds.h" | |
2306 | #undef DEF | |
2307 | #undef GEN_DOCS | |
2308 | { NULL, NULL, }, | |
2309 | }; | |
2310 | ||
ea2384d3 FB |
2311 | int main(int argc, char **argv) |
2312 | { | |
c227f099 | 2313 | const img_cmd_t *cmd; |
153859be | 2314 | const char *cmdname; |
ea2384d3 | 2315 | |
53f76e58 KW |
2316 | error_set_progname(argv[0]); |
2317 | ||
2592c59a | 2318 | qemu_init_main_loop(); |
ea2384d3 FB |
2319 | bdrv_init(); |
2320 | if (argc < 2) | |
2321 | help(); | |
153859be | 2322 | cmdname = argv[1]; |
8f9b157e | 2323 | argc--; argv++; |
153859be SB |
2324 | |
2325 | /* find the command */ | |
2326 | for(cmd = img_cmds; cmd->name != NULL; cmd++) { | |
2327 | if (!strcmp(cmdname, cmd->name)) { | |
2328 | return cmd->handler(argc, argv); | |
2329 | } | |
ea2384d3 | 2330 | } |
153859be SB |
2331 | |
2332 | /* not found */ | |
2333 | help(); | |
ea2384d3 FB |
2334 | return 0; |
2335 | } |