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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" | |
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> |
e8445331 | 35 | |
c227f099 | 36 | typedef struct img_cmd_t { |
153859be SB |
37 | const char *name; |
38 | int (*handler)(int argc, char **argv); | |
c227f099 | 39 | } img_cmd_t; |
153859be | 40 | |
8599ea4c FS |
41 | enum { |
42 | OPTION_OUTPUT = 256, | |
43 | OPTION_BACKING_CHAIN = 257, | |
44 | }; | |
45 | ||
46 | typedef enum OutputFormat { | |
47 | OFORMAT_JSON, | |
48 | OFORMAT_HUMAN, | |
49 | } OutputFormat; | |
50 | ||
137519ce | 51 | /* Default to cache=writeback as data integrity is not important for qemu-tcg. */ |
adfe078e | 52 | #define BDRV_O_FLAGS BDRV_O_CACHE_WB |
661a0f71 | 53 | #define BDRV_DEFAULT_CACHE "writeback" |
137519ce | 54 | |
ea2384d3 FB |
55 | static void format_print(void *opaque, const char *name) |
56 | { | |
57 | printf(" %s", name); | |
58 | } | |
59 | ||
d2c639d6 | 60 | /* Please keep in synch with qemu-img.texi */ |
3f379ab1 | 61 | static void help(void) |
ea2384d3 | 62 | { |
e00291c0 PB |
63 | const char *help_msg = |
64 | "qemu-img version " QEMU_VERSION ", Copyright (c) 2004-2008 Fabrice Bellard\n" | |
3f020d70 | 65 | "usage: qemu-img command [command options]\n" |
66 | "QEMU disk image utility\n" | |
67 | "\n" | |
68 | "Command syntax:\n" | |
153859be SB |
69 | #define DEF(option, callback, arg_string) \ |
70 | " " arg_string "\n" | |
71 | #include "qemu-img-cmds.h" | |
72 | #undef DEF | |
73 | #undef GEN_DOCS | |
3f020d70 | 74 | "\n" |
75 | "Command parameters:\n" | |
76 | " 'filename' is a disk image filename\n" | |
77 | " 'fmt' is the disk image format. It is guessed automatically in most cases\n" | |
661a0f71 | 78 | " 'cache' is the cache mode used to write the output disk image, the valid\n" |
80ccf93b LY |
79 | " options are: 'none', 'writeback' (default, except for convert), 'writethrough',\n" |
80 | " 'directsync' and 'unsafe' (default for convert)\n" | |
3f020d70 | 81 | " 'size' is the disk image size in bytes. Optional suffixes\n" |
5e00984a KW |
82 | " 'k' or 'K' (kilobyte, 1024), 'M' (megabyte, 1024k), 'G' (gigabyte, 1024M),\n" |
83 | " 'T' (terabyte, 1024G), 'P' (petabyte, 1024T) and 'E' (exabyte, 1024P) are\n" | |
84 | " supported. 'b' is ignored.\n" | |
3f020d70 | 85 | " 'output_filename' is the destination disk image filename\n" |
86 | " 'output_fmt' is the destination format\n" | |
87 | " 'options' is a comma separated list of format specific options in a\n" | |
88 | " name=value format. Use -o ? for an overview of the options supported by the\n" | |
89 | " used format\n" | |
ef80654d WX |
90 | " 'snapshot_param' is param used for internal snapshot, format\n" |
91 | " is 'snapshot.id=[ID],snapshot.name=[NAME]', or\n" | |
92 | " '[ID_OR_NAME]'\n" | |
93 | " 'snapshot_id_or_name' is deprecated, use 'snapshot_param'\n" | |
94 | " instead\n" | |
3f020d70 | 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" |
11b6699a PL |
102 | " '-S' indicates the consecutive number of bytes (defaults to 4k) that must\n" |
103 | " contain only zeros for qemu-img to create a sparse image during\n" | |
104 | " conversion. If the number of bytes is 0, the source will not be scanned for\n" | |
105 | " unallocated or zero sectors, and the destination image will always be\n" | |
106 | " fully allocated\n" | |
c054b3fd | 107 | " '--output' takes the format in which the output must be done (human or json)\n" |
b2e10493 AD |
108 | " '-n' skips the target volume creation (useful if the volume is created\n" |
109 | " prior to running qemu-img)\n" | |
3f020d70 | 110 | "\n" |
4534ff54 KW |
111 | "Parameters to check subcommand:\n" |
112 | " '-r' tries to repair any inconsistencies that are found during the check.\n" | |
113 | " '-r leaks' repairs only cluster leaks, whereas '-r all' fixes all\n" | |
114 | " kinds of errors, with a higher risk of choosing the wrong fix or\n" | |
0546b8c2 | 115 | " hiding corruption that has already occurred.\n" |
4534ff54 | 116 | "\n" |
3f020d70 | 117 | "Parameters to snapshot subcommand:\n" |
118 | " 'snapshot' is the name of the snapshot to create, apply or delete\n" | |
119 | " '-a' applies a snapshot (revert disk to saved state)\n" | |
120 | " '-c' creates a snapshot\n" | |
121 | " '-d' deletes a snapshot\n" | |
d14ed18c MR |
122 | " '-l' lists all snapshots in the given image\n" |
123 | "\n" | |
124 | "Parameters to compare subcommand:\n" | |
125 | " '-f' first image format\n" | |
126 | " '-F' second image format\n" | |
127 | " '-s' run in Strict mode - fail on different image size or sector allocation\n"; | |
e00291c0 PB |
128 | |
129 | printf("%s\nSupported formats:", help_msg); | |
ea2384d3 FB |
130 | bdrv_iterate_format(format_print, NULL); |
131 | printf("\n"); | |
132 | exit(1); | |
133 | } | |
134 | ||
7c30f657 | 135 | static int GCC_FMT_ATTR(2, 3) qprintf(bool quiet, const char *fmt, ...) |
f382d43a MR |
136 | { |
137 | int ret = 0; | |
138 | if (!quiet) { | |
139 | va_list args; | |
140 | va_start(args, fmt); | |
141 | ret = vprintf(fmt, args); | |
142 | va_end(args); | |
143 | } | |
144 | return ret; | |
145 | } | |
146 | ||
ea2384d3 FB |
147 | #if defined(WIN32) |
148 | /* XXX: put correct support for win32 */ | |
149 | static int read_password(char *buf, int buf_size) | |
150 | { | |
151 | int c, i; | |
152 | printf("Password: "); | |
153 | fflush(stdout); | |
154 | i = 0; | |
155 | for(;;) { | |
156 | c = getchar(); | |
157 | if (c == '\n') | |
158 | break; | |
159 | if (i < (buf_size - 1)) | |
160 | buf[i++] = c; | |
161 | } | |
162 | buf[i] = '\0'; | |
163 | return 0; | |
164 | } | |
165 | ||
166 | #else | |
167 | ||
168 | #include <termios.h> | |
169 | ||
170 | static struct termios oldtty; | |
171 | ||
172 | static void term_exit(void) | |
173 | { | |
174 | tcsetattr (0, TCSANOW, &oldtty); | |
175 | } | |
176 | ||
177 | static void term_init(void) | |
178 | { | |
179 | struct termios tty; | |
180 | ||
181 | tcgetattr (0, &tty); | |
182 | oldtty = tty; | |
183 | ||
184 | tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP | |
185 | |INLCR|IGNCR|ICRNL|IXON); | |
186 | tty.c_oflag |= OPOST; | |
187 | tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN); | |
188 | tty.c_cflag &= ~(CSIZE|PARENB); | |
189 | tty.c_cflag |= CS8; | |
190 | tty.c_cc[VMIN] = 1; | |
191 | tty.c_cc[VTIME] = 0; | |
3b46e624 | 192 | |
ea2384d3 FB |
193 | tcsetattr (0, TCSANOW, &tty); |
194 | ||
195 | atexit(term_exit); | |
196 | } | |
197 | ||
3f379ab1 | 198 | static int read_password(char *buf, int buf_size) |
ea2384d3 FB |
199 | { |
200 | uint8_t ch; | |
201 | int i, ret; | |
202 | ||
203 | printf("password: "); | |
204 | fflush(stdout); | |
205 | term_init(); | |
206 | i = 0; | |
207 | for(;;) { | |
208 | ret = read(0, &ch, 1); | |
209 | if (ret == -1) { | |
210 | if (errno == EAGAIN || errno == EINTR) { | |
211 | continue; | |
212 | } else { | |
213 | ret = -1; | |
214 | break; | |
215 | } | |
216 | } else if (ret == 0) { | |
217 | ret = -1; | |
218 | break; | |
219 | } else { | |
220 | if (ch == '\r') { | |
221 | ret = 0; | |
222 | break; | |
223 | } | |
224 | if (i < (buf_size - 1)) | |
225 | buf[i++] = ch; | |
226 | } | |
227 | } | |
228 | term_exit(); | |
229 | buf[i] = '\0'; | |
230 | printf("\n"); | |
231 | return ret; | |
232 | } | |
233 | #endif | |
234 | ||
4ac8aacd JS |
235 | static int print_block_option_help(const char *filename, const char *fmt) |
236 | { | |
237 | BlockDriver *drv, *proto_drv; | |
238 | QEMUOptionParameter *create_options = NULL; | |
239 | ||
240 | /* Find driver and parse its options */ | |
241 | drv = bdrv_find_format(fmt); | |
242 | if (!drv) { | |
15654a6d | 243 | error_report("Unknown file format '%s'", fmt); |
4ac8aacd JS |
244 | return 1; |
245 | } | |
246 | ||
4ac8aacd JS |
247 | create_options = append_option_parameters(create_options, |
248 | drv->create_options); | |
a283cb6e KW |
249 | |
250 | if (filename) { | |
251 | proto_drv = bdrv_find_protocol(filename, true); | |
252 | if (!proto_drv) { | |
253 | error_report("Unknown protocol '%s'", filename); | |
254 | return 1; | |
255 | } | |
256 | create_options = append_option_parameters(create_options, | |
257 | proto_drv->create_options); | |
258 | } | |
259 | ||
4ac8aacd JS |
260 | print_option_help(create_options); |
261 | free_option_parameters(create_options); | |
262 | return 0; | |
263 | } | |
264 | ||
9ffe3332 KW |
265 | static BlockDriverState *bdrv_new_open(const char *id, |
266 | const char *filename, | |
9bc378c1 | 267 | const char *fmt, |
f0536bb8 | 268 | int flags, |
f382d43a MR |
269 | bool require_io, |
270 | bool quiet) | |
75c23805 FB |
271 | { |
272 | BlockDriverState *bs; | |
273 | BlockDriver *drv; | |
274 | char password[256]; | |
34b5d2c6 | 275 | Error *local_err = NULL; |
b9eaf9ec | 276 | int ret; |
75c23805 | 277 | |
9ffe3332 | 278 | bs = bdrv_new(id, &error_abort); |
ad717139 | 279 | |
75c23805 FB |
280 | if (fmt) { |
281 | drv = bdrv_find_format(fmt); | |
c2abccec | 282 | if (!drv) { |
15654a6d | 283 | error_report("Unknown file format '%s'", fmt); |
c2abccec MK |
284 | goto fail; |
285 | } | |
75c23805 FB |
286 | } else { |
287 | drv = NULL; | |
288 | } | |
b9eaf9ec | 289 | |
ddf5636d | 290 | ret = bdrv_open(&bs, filename, NULL, NULL, flags, drv, &local_err); |
b9eaf9ec | 291 | if (ret < 0) { |
34b5d2c6 HR |
292 | error_report("Could not open '%s': %s", filename, |
293 | error_get_pretty(local_err)); | |
294 | error_free(local_err); | |
c2abccec | 295 | goto fail; |
75c23805 | 296 | } |
b9eaf9ec | 297 | |
f0536bb8 | 298 | if (bdrv_is_encrypted(bs) && require_io) { |
f382d43a | 299 | qprintf(quiet, "Disk image '%s' is encrypted.\n", filename); |
c2abccec | 300 | if (read_password(password, sizeof(password)) < 0) { |
15654a6d | 301 | error_report("No password given"); |
c2abccec MK |
302 | goto fail; |
303 | } | |
304 | if (bdrv_set_key(bs, password) < 0) { | |
15654a6d | 305 | error_report("invalid password"); |
c2abccec MK |
306 | goto fail; |
307 | } | |
75c23805 FB |
308 | } |
309 | return bs; | |
c2abccec | 310 | fail: |
f67503e5 | 311 | bdrv_unref(bs); |
c2abccec | 312 | return NULL; |
75c23805 FB |
313 | } |
314 | ||
c2abccec | 315 | static int add_old_style_options(const char *fmt, QEMUOptionParameter *list, |
eec77d9e JS |
316 | const char *base_filename, |
317 | const char *base_fmt) | |
efa84d43 | 318 | { |
efa84d43 KW |
319 | if (base_filename) { |
320 | if (set_option_parameter(list, BLOCK_OPT_BACKING_FILE, base_filename)) { | |
15654a6d JS |
321 | error_report("Backing file not supported for file format '%s'", |
322 | fmt); | |
c2abccec | 323 | return -1; |
efa84d43 KW |
324 | } |
325 | } | |
326 | if (base_fmt) { | |
327 | if (set_option_parameter(list, BLOCK_OPT_BACKING_FMT, base_fmt)) { | |
15654a6d JS |
328 | error_report("Backing file format not supported for file " |
329 | "format '%s'", fmt); | |
c2abccec | 330 | return -1; |
efa84d43 KW |
331 | } |
332 | } | |
c2abccec | 333 | return 0; |
efa84d43 KW |
334 | } |
335 | ||
ea2384d3 FB |
336 | static int img_create(int argc, char **argv) |
337 | { | |
a9300911 | 338 | int c; |
1da7cfbd | 339 | uint64_t img_size = -1; |
ea2384d3 | 340 | const char *fmt = "raw"; |
9230eaf6 | 341 | const char *base_fmt = NULL; |
ea2384d3 FB |
342 | const char *filename; |
343 | const char *base_filename = NULL; | |
9ea2ea71 | 344 | char *options = NULL; |
9b37525a | 345 | Error *local_err = NULL; |
f382d43a | 346 | bool quiet = false; |
3b46e624 | 347 | |
ea2384d3 | 348 | for(;;) { |
f382d43a | 349 | c = getopt(argc, argv, "F:b:f:he6o:q"); |
b8fb60da | 350 | if (c == -1) { |
ea2384d3 | 351 | break; |
b8fb60da | 352 | } |
ea2384d3 | 353 | switch(c) { |
ef87394c | 354 | case '?': |
ea2384d3 FB |
355 | case 'h': |
356 | help(); | |
357 | break; | |
9230eaf6 AL |
358 | case 'F': |
359 | base_fmt = optarg; | |
360 | break; | |
ea2384d3 FB |
361 | case 'b': |
362 | base_filename = optarg; | |
363 | break; | |
364 | case 'f': | |
365 | fmt = optarg; | |
366 | break; | |
367 | case 'e': | |
9d42e15d | 368 | error_report("option -e is deprecated, please use \'-o " |
eec77d9e | 369 | "encryption\' instead!"); |
77386bf6 | 370 | goto fail; |
d8871c5a | 371 | case '6': |
9d42e15d | 372 | error_report("option -6 is deprecated, please use \'-o " |
eec77d9e | 373 | "compat6\' instead!"); |
77386bf6 | 374 | goto fail; |
9ea2ea71 | 375 | case 'o': |
77386bf6 KW |
376 | if (!is_valid_option_list(optarg)) { |
377 | error_report("Invalid option list: %s", optarg); | |
378 | goto fail; | |
379 | } | |
380 | if (!options) { | |
381 | options = g_strdup(optarg); | |
382 | } else { | |
383 | char *old_options = options; | |
384 | options = g_strdup_printf("%s,%s", options, optarg); | |
385 | g_free(old_options); | |
386 | } | |
9ea2ea71 | 387 | break; |
f382d43a MR |
388 | case 'q': |
389 | quiet = true; | |
390 | break; | |
ea2384d3 FB |
391 | } |
392 | } | |
9230eaf6 | 393 | |
b50cbabc | 394 | /* Get the filename */ |
a283cb6e KW |
395 | filename = (optind < argc) ? argv[optind] : NULL; |
396 | if (options && has_help_option(options)) { | |
397 | g_free(options); | |
398 | return print_block_option_help(filename, fmt); | |
399 | } | |
400 | ||
b8fb60da | 401 | if (optind >= argc) { |
b50cbabc | 402 | help(); |
b8fb60da | 403 | } |
a283cb6e | 404 | optind++; |
b50cbabc | 405 | |
1da7cfbd JS |
406 | /* Get image size, if specified */ |
407 | if (optind < argc) { | |
70b4f4bb | 408 | int64_t sval; |
e36b3695 MA |
409 | char *end; |
410 | sval = strtosz_suffix(argv[optind++], &end, STRTOSZ_DEFSUFFIX_B); | |
411 | if (sval < 0 || *end) { | |
79443397 LG |
412 | if (sval == -ERANGE) { |
413 | error_report("Image size must be less than 8 EiB!"); | |
414 | } else { | |
415 | error_report("Invalid image size specified! You may use k, M, " | |
5e00984a KW |
416 | "G, T, P or E suffixes for "); |
417 | error_report("kilobytes, megabytes, gigabytes, terabytes, " | |
418 | "petabytes and exabytes."); | |
79443397 | 419 | } |
77386bf6 | 420 | goto fail; |
1da7cfbd JS |
421 | } |
422 | img_size = (uint64_t)sval; | |
423 | } | |
fc11eb26 KW |
424 | if (optind != argc) { |
425 | help(); | |
426 | } | |
1da7cfbd | 427 | |
9b37525a | 428 | bdrv_img_create(filename, fmt, base_filename, base_fmt, |
f382d43a | 429 | options, img_size, BDRV_O_FLAGS, &local_err, quiet); |
84d18f06 | 430 | if (local_err) { |
b70d8c23 | 431 | error_report("%s: %s", filename, error_get_pretty(local_err)); |
9b37525a | 432 | error_free(local_err); |
77386bf6 | 433 | goto fail; |
c2abccec | 434 | } |
a9300911 | 435 | |
77386bf6 | 436 | g_free(options); |
ea2384d3 | 437 | return 0; |
77386bf6 KW |
438 | |
439 | fail: | |
440 | g_free(options); | |
441 | return 1; | |
ea2384d3 FB |
442 | } |
443 | ||
f382d43a | 444 | static void dump_json_image_check(ImageCheck *check, bool quiet) |
8599ea4c FS |
445 | { |
446 | Error *errp = NULL; | |
447 | QString *str; | |
448 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
449 | QObject *obj; | |
450 | visit_type_ImageCheck(qmp_output_get_visitor(ov), | |
451 | &check, NULL, &errp); | |
452 | obj = qmp_output_get_qobject(ov); | |
453 | str = qobject_to_json_pretty(obj); | |
454 | assert(str != NULL); | |
f382d43a | 455 | qprintf(quiet, "%s\n", qstring_get_str(str)); |
8599ea4c FS |
456 | qobject_decref(obj); |
457 | qmp_output_visitor_cleanup(ov); | |
458 | QDECREF(str); | |
459 | } | |
460 | ||
f382d43a | 461 | static void dump_human_image_check(ImageCheck *check, bool quiet) |
8599ea4c FS |
462 | { |
463 | if (!(check->corruptions || check->leaks || check->check_errors)) { | |
f382d43a | 464 | qprintf(quiet, "No errors were found on the image.\n"); |
8599ea4c FS |
465 | } else { |
466 | if (check->corruptions) { | |
f382d43a MR |
467 | qprintf(quiet, "\n%" PRId64 " errors were found on the image.\n" |
468 | "Data may be corrupted, or further writes to the image " | |
469 | "may corrupt it.\n", | |
470 | check->corruptions); | |
8599ea4c FS |
471 | } |
472 | ||
473 | if (check->leaks) { | |
f382d43a MR |
474 | qprintf(quiet, |
475 | "\n%" PRId64 " leaked clusters were found on the image.\n" | |
476 | "This means waste of disk space, but no harm to data.\n", | |
477 | check->leaks); | |
8599ea4c FS |
478 | } |
479 | ||
480 | if (check->check_errors) { | |
f382d43a MR |
481 | qprintf(quiet, |
482 | "\n%" PRId64 | |
483 | " internal errors have occurred during the check.\n", | |
484 | check->check_errors); | |
8599ea4c FS |
485 | } |
486 | } | |
487 | ||
488 | if (check->total_clusters != 0 && check->allocated_clusters != 0) { | |
f382d43a MR |
489 | qprintf(quiet, "%" PRId64 "/%" PRId64 " = %0.2f%% allocated, " |
490 | "%0.2f%% fragmented, %0.2f%% compressed clusters\n", | |
491 | check->allocated_clusters, check->total_clusters, | |
492 | check->allocated_clusters * 100.0 / check->total_clusters, | |
493 | check->fragmented_clusters * 100.0 / check->allocated_clusters, | |
494 | check->compressed_clusters * 100.0 / | |
495 | check->allocated_clusters); | |
8599ea4c FS |
496 | } |
497 | ||
498 | if (check->image_end_offset) { | |
f382d43a MR |
499 | qprintf(quiet, |
500 | "Image end offset: %" PRId64 "\n", check->image_end_offset); | |
8599ea4c FS |
501 | } |
502 | } | |
503 | ||
504 | static int collect_image_check(BlockDriverState *bs, | |
505 | ImageCheck *check, | |
506 | const char *filename, | |
507 | const char *fmt, | |
508 | int fix) | |
509 | { | |
510 | int ret; | |
511 | BdrvCheckResult result; | |
512 | ||
513 | ret = bdrv_check(bs, &result, fix); | |
514 | if (ret < 0) { | |
515 | return ret; | |
516 | } | |
517 | ||
518 | check->filename = g_strdup(filename); | |
519 | check->format = g_strdup(bdrv_get_format_name(bs)); | |
520 | check->check_errors = result.check_errors; | |
521 | check->corruptions = result.corruptions; | |
522 | check->has_corruptions = result.corruptions != 0; | |
523 | check->leaks = result.leaks; | |
524 | check->has_leaks = result.leaks != 0; | |
525 | check->corruptions_fixed = result.corruptions_fixed; | |
526 | check->has_corruptions_fixed = result.corruptions != 0; | |
527 | check->leaks_fixed = result.leaks_fixed; | |
528 | check->has_leaks_fixed = result.leaks != 0; | |
529 | check->image_end_offset = result.image_end_offset; | |
530 | check->has_image_end_offset = result.image_end_offset != 0; | |
531 | check->total_clusters = result.bfi.total_clusters; | |
532 | check->has_total_clusters = result.bfi.total_clusters != 0; | |
533 | check->allocated_clusters = result.bfi.allocated_clusters; | |
534 | check->has_allocated_clusters = result.bfi.allocated_clusters != 0; | |
535 | check->fragmented_clusters = result.bfi.fragmented_clusters; | |
536 | check->has_fragmented_clusters = result.bfi.fragmented_clusters != 0; | |
e6439d78 SH |
537 | check->compressed_clusters = result.bfi.compressed_clusters; |
538 | check->has_compressed_clusters = result.bfi.compressed_clusters != 0; | |
8599ea4c FS |
539 | |
540 | return 0; | |
541 | } | |
542 | ||
e076f338 KW |
543 | /* |
544 | * Checks an image for consistency. Exit codes: | |
545 | * | |
546 | * 0 - Check completed, image is good | |
547 | * 1 - Check not completed because of internal errors | |
548 | * 2 - Check completed, image is corrupted | |
549 | * 3 - Check completed, image has leaked clusters, but is good otherwise | |
550 | */ | |
1585969c AL |
551 | static int img_check(int argc, char **argv) |
552 | { | |
553 | int c, ret; | |
8599ea4c FS |
554 | OutputFormat output_format = OFORMAT_HUMAN; |
555 | const char *filename, *fmt, *output; | |
1585969c | 556 | BlockDriverState *bs; |
4534ff54 | 557 | int fix = 0; |
058f8f16 | 558 | int flags = BDRV_O_FLAGS | BDRV_O_CHECK; |
8599ea4c | 559 | ImageCheck *check; |
f382d43a | 560 | bool quiet = false; |
1585969c AL |
561 | |
562 | fmt = NULL; | |
8599ea4c | 563 | output = NULL; |
1585969c | 564 | for(;;) { |
8599ea4c FS |
565 | int option_index = 0; |
566 | static const struct option long_options[] = { | |
567 | {"help", no_argument, 0, 'h'}, | |
568 | {"format", required_argument, 0, 'f'}, | |
4fd6a984 | 569 | {"repair", required_argument, 0, 'r'}, |
8599ea4c FS |
570 | {"output", required_argument, 0, OPTION_OUTPUT}, |
571 | {0, 0, 0, 0} | |
572 | }; | |
f382d43a | 573 | c = getopt_long(argc, argv, "f:hr:q", |
8599ea4c | 574 | long_options, &option_index); |
b8fb60da | 575 | if (c == -1) { |
1585969c | 576 | break; |
b8fb60da | 577 | } |
1585969c | 578 | switch(c) { |
ef87394c | 579 | case '?': |
1585969c AL |
580 | case 'h': |
581 | help(); | |
582 | break; | |
583 | case 'f': | |
584 | fmt = optarg; | |
585 | break; | |
4534ff54 KW |
586 | case 'r': |
587 | flags |= BDRV_O_RDWR; | |
588 | ||
589 | if (!strcmp(optarg, "leaks")) { | |
590 | fix = BDRV_FIX_LEAKS; | |
591 | } else if (!strcmp(optarg, "all")) { | |
592 | fix = BDRV_FIX_LEAKS | BDRV_FIX_ERRORS; | |
593 | } else { | |
594 | help(); | |
595 | } | |
596 | break; | |
8599ea4c FS |
597 | case OPTION_OUTPUT: |
598 | output = optarg; | |
599 | break; | |
f382d43a MR |
600 | case 'q': |
601 | quiet = true; | |
602 | break; | |
1585969c AL |
603 | } |
604 | } | |
fc11eb26 | 605 | if (optind != argc - 1) { |
1585969c | 606 | help(); |
b8fb60da | 607 | } |
1585969c AL |
608 | filename = argv[optind++]; |
609 | ||
8599ea4c FS |
610 | if (output && !strcmp(output, "json")) { |
611 | output_format = OFORMAT_JSON; | |
612 | } else if (output && !strcmp(output, "human")) { | |
613 | output_format = OFORMAT_HUMAN; | |
614 | } else if (output) { | |
615 | error_report("--output must be used with human or json as argument."); | |
616 | return 1; | |
617 | } | |
618 | ||
9ffe3332 | 619 | bs = bdrv_new_open("image", filename, fmt, flags, true, quiet); |
c2abccec MK |
620 | if (!bs) { |
621 | return 1; | |
622 | } | |
8599ea4c FS |
623 | |
624 | check = g_new0(ImageCheck, 1); | |
625 | ret = collect_image_check(bs, check, filename, fmt, fix); | |
e076f338 KW |
626 | |
627 | if (ret == -ENOTSUP) { | |
8599ea4c FS |
628 | if (output_format == OFORMAT_HUMAN) { |
629 | error_report("This image format does not support checks"); | |
630 | } | |
fefddf95 | 631 | ret = 63; |
8599ea4c | 632 | goto fail; |
e076f338 KW |
633 | } |
634 | ||
8599ea4c FS |
635 | if (check->corruptions_fixed || check->leaks_fixed) { |
636 | int corruptions_fixed, leaks_fixed; | |
ccf34716 | 637 | |
8599ea4c FS |
638 | leaks_fixed = check->leaks_fixed; |
639 | corruptions_fixed = check->corruptions_fixed; | |
e076f338 | 640 | |
8599ea4c | 641 | if (output_format == OFORMAT_HUMAN) { |
f382d43a MR |
642 | qprintf(quiet, |
643 | "The following inconsistencies were found and repaired:\n\n" | |
644 | " %" PRId64 " leaked clusters\n" | |
645 | " %" PRId64 " corruptions\n\n" | |
646 | "Double checking the fixed image now...\n", | |
647 | check->leaks_fixed, | |
648 | check->corruptions_fixed); | |
e076f338 KW |
649 | } |
650 | ||
8599ea4c | 651 | ret = collect_image_check(bs, check, filename, fmt, 0); |
1585969c | 652 | |
8599ea4c FS |
653 | check->leaks_fixed = leaks_fixed; |
654 | check->corruptions_fixed = corruptions_fixed; | |
f8111c24 DXW |
655 | } |
656 | ||
8599ea4c FS |
657 | switch (output_format) { |
658 | case OFORMAT_HUMAN: | |
f382d43a | 659 | dump_human_image_check(check, quiet); |
8599ea4c FS |
660 | break; |
661 | case OFORMAT_JSON: | |
f382d43a | 662 | dump_json_image_check(check, quiet); |
8599ea4c | 663 | break; |
c6bb9ad1 FS |
664 | } |
665 | ||
8599ea4c FS |
666 | if (ret || check->check_errors) { |
667 | ret = 1; | |
668 | goto fail; | |
c2abccec | 669 | } |
e076f338 | 670 | |
8599ea4c FS |
671 | if (check->corruptions) { |
672 | ret = 2; | |
673 | } else if (check->leaks) { | |
674 | ret = 3; | |
e076f338 | 675 | } else { |
8599ea4c | 676 | ret = 0; |
e076f338 | 677 | } |
8599ea4c FS |
678 | |
679 | fail: | |
680 | qapi_free_ImageCheck(check); | |
4f6fd349 | 681 | bdrv_unref(bs); |
8599ea4c FS |
682 | |
683 | return ret; | |
1585969c AL |
684 | } |
685 | ||
ea2384d3 FB |
686 | static int img_commit(int argc, char **argv) |
687 | { | |
661a0f71 FS |
688 | int c, ret, flags; |
689 | const char *filename, *fmt, *cache; | |
ea2384d3 | 690 | BlockDriverState *bs; |
f382d43a | 691 | bool quiet = false; |
ea2384d3 FB |
692 | |
693 | fmt = NULL; | |
661a0f71 | 694 | cache = BDRV_DEFAULT_CACHE; |
ea2384d3 | 695 | for(;;) { |
f382d43a | 696 | c = getopt(argc, argv, "f:ht:q"); |
b8fb60da | 697 | if (c == -1) { |
ea2384d3 | 698 | break; |
b8fb60da | 699 | } |
ea2384d3 | 700 | switch(c) { |
ef87394c | 701 | case '?': |
ea2384d3 FB |
702 | case 'h': |
703 | help(); | |
704 | break; | |
705 | case 'f': | |
706 | fmt = optarg; | |
707 | break; | |
661a0f71 FS |
708 | case 't': |
709 | cache = optarg; | |
710 | break; | |
f382d43a MR |
711 | case 'q': |
712 | quiet = true; | |
713 | break; | |
ea2384d3 FB |
714 | } |
715 | } | |
fc11eb26 | 716 | if (optind != argc - 1) { |
ea2384d3 | 717 | help(); |
b8fb60da | 718 | } |
ea2384d3 FB |
719 | filename = argv[optind++]; |
720 | ||
661a0f71 | 721 | flags = BDRV_O_RDWR; |
c3993cdc | 722 | ret = bdrv_parse_cache_flags(cache, &flags); |
661a0f71 FS |
723 | if (ret < 0) { |
724 | error_report("Invalid cache option: %s", cache); | |
725 | return -1; | |
726 | } | |
727 | ||
9ffe3332 | 728 | bs = bdrv_new_open("image", filename, fmt, flags, true, quiet); |
c2abccec MK |
729 | if (!bs) { |
730 | return 1; | |
731 | } | |
ea2384d3 FB |
732 | ret = bdrv_commit(bs); |
733 | switch(ret) { | |
734 | case 0: | |
f382d43a | 735 | qprintf(quiet, "Image committed.\n"); |
ea2384d3 FB |
736 | break; |
737 | case -ENOENT: | |
15654a6d | 738 | error_report("No disk inserted"); |
ea2384d3 FB |
739 | break; |
740 | case -EACCES: | |
15654a6d | 741 | error_report("Image is read-only"); |
ea2384d3 FB |
742 | break; |
743 | case -ENOTSUP: | |
15654a6d | 744 | error_report("Image is already committed"); |
ea2384d3 FB |
745 | break; |
746 | default: | |
15654a6d | 747 | error_report("Error while committing image"); |
ea2384d3 FB |
748 | break; |
749 | } | |
750 | ||
4f6fd349 | 751 | bdrv_unref(bs); |
c2abccec MK |
752 | if (ret) { |
753 | return 1; | |
754 | } | |
ea2384d3 FB |
755 | return 0; |
756 | } | |
757 | ||
f58c7b35 TS |
758 | /* |
759 | * Returns true iff the first sector pointed to by 'buf' contains at least | |
760 | * a non-NUL byte. | |
761 | * | |
762 | * 'pnum' is set to the number of sectors (including and immediately following | |
763 | * the first one) that are known to be in the same allocated/unallocated state. | |
764 | */ | |
ea2384d3 FB |
765 | static int is_allocated_sectors(const uint8_t *buf, int n, int *pnum) |
766 | { | |
1a6d39fd SH |
767 | bool is_zero; |
768 | int i; | |
ea2384d3 FB |
769 | |
770 | if (n <= 0) { | |
771 | *pnum = 0; | |
772 | return 0; | |
773 | } | |
1a6d39fd | 774 | is_zero = buffer_is_zero(buf, 512); |
ea2384d3 FB |
775 | for(i = 1; i < n; i++) { |
776 | buf += 512; | |
1a6d39fd | 777 | if (is_zero != buffer_is_zero(buf, 512)) { |
ea2384d3 | 778 | break; |
1a6d39fd | 779 | } |
ea2384d3 FB |
780 | } |
781 | *pnum = i; | |
1a6d39fd | 782 | return !is_zero; |
ea2384d3 FB |
783 | } |
784 | ||
a22f123c KW |
785 | /* |
786 | * Like is_allocated_sectors, but if the buffer starts with a used sector, | |
787 | * up to 'min' consecutive sectors containing zeros are ignored. This avoids | |
788 | * breaking up write requests for only small sparse areas. | |
789 | */ | |
790 | static int is_allocated_sectors_min(const uint8_t *buf, int n, int *pnum, | |
791 | int min) | |
792 | { | |
793 | int ret; | |
794 | int num_checked, num_used; | |
795 | ||
796 | if (n < min) { | |
797 | min = n; | |
798 | } | |
799 | ||
800 | ret = is_allocated_sectors(buf, n, pnum); | |
801 | if (!ret) { | |
802 | return ret; | |
803 | } | |
804 | ||
805 | num_used = *pnum; | |
806 | buf += BDRV_SECTOR_SIZE * *pnum; | |
807 | n -= *pnum; | |
808 | num_checked = num_used; | |
809 | ||
810 | while (n > 0) { | |
811 | ret = is_allocated_sectors(buf, n, pnum); | |
812 | ||
813 | buf += BDRV_SECTOR_SIZE * *pnum; | |
814 | n -= *pnum; | |
815 | num_checked += *pnum; | |
816 | if (ret) { | |
817 | num_used = num_checked; | |
818 | } else if (*pnum >= min) { | |
819 | break; | |
820 | } | |
821 | } | |
822 | ||
823 | *pnum = num_used; | |
824 | return 1; | |
825 | } | |
826 | ||
3e85c6fd KW |
827 | /* |
828 | * Compares two buffers sector by sector. Returns 0 if the first sector of both | |
829 | * buffers matches, non-zero otherwise. | |
830 | * | |
831 | * pnum is set to the number of sectors (including and immediately following | |
832 | * the first one) that are known to have the same comparison result | |
833 | */ | |
834 | static int compare_sectors(const uint8_t *buf1, const uint8_t *buf2, int n, | |
835 | int *pnum) | |
836 | { | |
837 | int res, i; | |
838 | ||
839 | if (n <= 0) { | |
840 | *pnum = 0; | |
841 | return 0; | |
842 | } | |
843 | ||
844 | res = !!memcmp(buf1, buf2, 512); | |
845 | for(i = 1; i < n; i++) { | |
846 | buf1 += 512; | |
847 | buf2 += 512; | |
848 | ||
849 | if (!!memcmp(buf1, buf2, 512) != res) { | |
850 | break; | |
851 | } | |
852 | } | |
853 | ||
854 | *pnum = i; | |
855 | return res; | |
856 | } | |
857 | ||
80ee15a6 | 858 | #define IO_BUF_SIZE (2 * 1024 * 1024) |
ea2384d3 | 859 | |
d14ed18c MR |
860 | static int64_t sectors_to_bytes(int64_t sectors) |
861 | { | |
862 | return sectors << BDRV_SECTOR_BITS; | |
863 | } | |
864 | ||
865 | static int64_t sectors_to_process(int64_t total, int64_t from) | |
866 | { | |
867 | return MIN(total - from, IO_BUF_SIZE >> BDRV_SECTOR_BITS); | |
868 | } | |
869 | ||
870 | /* | |
871 | * Check if passed sectors are empty (not allocated or contain only 0 bytes) | |
872 | * | |
873 | * Returns 0 in case sectors are filled with 0, 1 if sectors contain non-zero | |
874 | * data and negative value on error. | |
875 | * | |
876 | * @param bs: Driver used for accessing file | |
877 | * @param sect_num: Number of first sector to check | |
878 | * @param sect_count: Number of sectors to check | |
879 | * @param filename: Name of disk file we are checking (logging purpose) | |
880 | * @param buffer: Allocated buffer for storing read data | |
881 | * @param quiet: Flag for quiet mode | |
882 | */ | |
883 | static int check_empty_sectors(BlockDriverState *bs, int64_t sect_num, | |
884 | int sect_count, const char *filename, | |
885 | uint8_t *buffer, bool quiet) | |
886 | { | |
887 | int pnum, ret = 0; | |
888 | ret = bdrv_read(bs, sect_num, buffer, sect_count); | |
889 | if (ret < 0) { | |
890 | error_report("Error while reading offset %" PRId64 " of %s: %s", | |
891 | sectors_to_bytes(sect_num), filename, strerror(-ret)); | |
892 | return ret; | |
893 | } | |
894 | ret = is_allocated_sectors(buffer, sect_count, &pnum); | |
895 | if (ret || pnum != sect_count) { | |
896 | qprintf(quiet, "Content mismatch at offset %" PRId64 "!\n", | |
897 | sectors_to_bytes(ret ? sect_num : sect_num + pnum)); | |
898 | return 1; | |
899 | } | |
900 | ||
901 | return 0; | |
902 | } | |
903 | ||
904 | /* | |
905 | * Compares two images. Exit codes: | |
906 | * | |
907 | * 0 - Images are identical | |
908 | * 1 - Images differ | |
909 | * >1 - Error occurred | |
910 | */ | |
911 | static int img_compare(int argc, char **argv) | |
912 | { | |
913 | const char *fmt1 = NULL, *fmt2 = NULL, *filename1, *filename2; | |
914 | BlockDriverState *bs1, *bs2; | |
915 | int64_t total_sectors1, total_sectors2; | |
916 | uint8_t *buf1 = NULL, *buf2 = NULL; | |
917 | int pnum1, pnum2; | |
918 | int allocated1, allocated2; | |
919 | int ret = 0; /* return value - 0 Ident, 1 Different, >1 Error */ | |
920 | bool progress = false, quiet = false, strict = false; | |
921 | int64_t total_sectors; | |
922 | int64_t sector_num = 0; | |
923 | int64_t nb_sectors; | |
924 | int c, pnum; | |
925 | uint64_t bs_sectors; | |
926 | uint64_t progress_base; | |
927 | ||
928 | for (;;) { | |
929 | c = getopt(argc, argv, "hpf:F:sq"); | |
930 | if (c == -1) { | |
931 | break; | |
932 | } | |
933 | switch (c) { | |
934 | case '?': | |
935 | case 'h': | |
936 | help(); | |
937 | break; | |
938 | case 'f': | |
939 | fmt1 = optarg; | |
940 | break; | |
941 | case 'F': | |
942 | fmt2 = optarg; | |
943 | break; | |
944 | case 'p': | |
945 | progress = true; | |
946 | break; | |
947 | case 'q': | |
948 | quiet = true; | |
949 | break; | |
950 | case 's': | |
951 | strict = true; | |
952 | break; | |
953 | } | |
954 | } | |
955 | ||
956 | /* Progress is not shown in Quiet mode */ | |
957 | if (quiet) { | |
958 | progress = false; | |
959 | } | |
960 | ||
961 | ||
fc11eb26 | 962 | if (optind != argc - 2) { |
d14ed18c MR |
963 | help(); |
964 | } | |
965 | filename1 = argv[optind++]; | |
966 | filename2 = argv[optind++]; | |
967 | ||
968 | /* Initialize before goto out */ | |
969 | qemu_progress_init(progress, 2.0); | |
970 | ||
9ffe3332 | 971 | bs1 = bdrv_new_open("image 1", filename1, fmt1, BDRV_O_FLAGS, true, quiet); |
d14ed18c MR |
972 | if (!bs1) { |
973 | error_report("Can't open file %s", filename1); | |
974 | ret = 2; | |
975 | goto out3; | |
976 | } | |
977 | ||
9ffe3332 | 978 | bs2 = bdrv_new_open("image 2", filename2, fmt2, BDRV_O_FLAGS, true, quiet); |
d14ed18c MR |
979 | if (!bs2) { |
980 | error_report("Can't open file %s", filename2); | |
981 | ret = 2; | |
982 | goto out2; | |
983 | } | |
984 | ||
985 | buf1 = qemu_blockalign(bs1, IO_BUF_SIZE); | |
986 | buf2 = qemu_blockalign(bs2, IO_BUF_SIZE); | |
987 | bdrv_get_geometry(bs1, &bs_sectors); | |
988 | total_sectors1 = bs_sectors; | |
989 | bdrv_get_geometry(bs2, &bs_sectors); | |
990 | total_sectors2 = bs_sectors; | |
991 | total_sectors = MIN(total_sectors1, total_sectors2); | |
992 | progress_base = MAX(total_sectors1, total_sectors2); | |
993 | ||
994 | qemu_progress_print(0, 100); | |
995 | ||
996 | if (strict && total_sectors1 != total_sectors2) { | |
997 | ret = 1; | |
998 | qprintf(quiet, "Strict mode: Image size mismatch!\n"); | |
999 | goto out; | |
1000 | } | |
1001 | ||
1002 | for (;;) { | |
1003 | nb_sectors = sectors_to_process(total_sectors, sector_num); | |
1004 | if (nb_sectors <= 0) { | |
1005 | break; | |
1006 | } | |
1007 | allocated1 = bdrv_is_allocated_above(bs1, NULL, sector_num, nb_sectors, | |
1008 | &pnum1); | |
1009 | if (allocated1 < 0) { | |
1010 | ret = 3; | |
1011 | error_report("Sector allocation test failed for %s", filename1); | |
1012 | goto out; | |
1013 | } | |
1014 | ||
1015 | allocated2 = bdrv_is_allocated_above(bs2, NULL, sector_num, nb_sectors, | |
1016 | &pnum2); | |
1017 | if (allocated2 < 0) { | |
1018 | ret = 3; | |
1019 | error_report("Sector allocation test failed for %s", filename2); | |
1020 | goto out; | |
1021 | } | |
1022 | nb_sectors = MIN(pnum1, pnum2); | |
1023 | ||
1024 | if (allocated1 == allocated2) { | |
1025 | if (allocated1) { | |
1026 | ret = bdrv_read(bs1, sector_num, buf1, nb_sectors); | |
1027 | if (ret < 0) { | |
1028 | error_report("Error while reading offset %" PRId64 " of %s:" | |
1029 | " %s", sectors_to_bytes(sector_num), filename1, | |
1030 | strerror(-ret)); | |
1031 | ret = 4; | |
1032 | goto out; | |
1033 | } | |
1034 | ret = bdrv_read(bs2, sector_num, buf2, nb_sectors); | |
1035 | if (ret < 0) { | |
1036 | error_report("Error while reading offset %" PRId64 | |
1037 | " of %s: %s", sectors_to_bytes(sector_num), | |
1038 | filename2, strerror(-ret)); | |
1039 | ret = 4; | |
1040 | goto out; | |
1041 | } | |
1042 | ret = compare_sectors(buf1, buf2, nb_sectors, &pnum); | |
1043 | if (ret || pnum != nb_sectors) { | |
d14ed18c MR |
1044 | qprintf(quiet, "Content mismatch at offset %" PRId64 "!\n", |
1045 | sectors_to_bytes( | |
1046 | ret ? sector_num : sector_num + pnum)); | |
36452f12 | 1047 | ret = 1; |
d14ed18c MR |
1048 | goto out; |
1049 | } | |
1050 | } | |
1051 | } else { | |
1052 | if (strict) { | |
1053 | ret = 1; | |
1054 | qprintf(quiet, "Strict mode: Offset %" PRId64 | |
1055 | " allocation mismatch!\n", | |
1056 | sectors_to_bytes(sector_num)); | |
1057 | goto out; | |
1058 | } | |
1059 | ||
1060 | if (allocated1) { | |
1061 | ret = check_empty_sectors(bs1, sector_num, nb_sectors, | |
1062 | filename1, buf1, quiet); | |
1063 | } else { | |
1064 | ret = check_empty_sectors(bs2, sector_num, nb_sectors, | |
1065 | filename2, buf1, quiet); | |
1066 | } | |
1067 | if (ret) { | |
1068 | if (ret < 0) { | |
d14ed18c MR |
1069 | error_report("Error while reading offset %" PRId64 ": %s", |
1070 | sectors_to_bytes(sector_num), strerror(-ret)); | |
36452f12 | 1071 | ret = 4; |
d14ed18c MR |
1072 | } |
1073 | goto out; | |
1074 | } | |
1075 | } | |
1076 | sector_num += nb_sectors; | |
1077 | qemu_progress_print(((float) nb_sectors / progress_base)*100, 100); | |
1078 | } | |
1079 | ||
1080 | if (total_sectors1 != total_sectors2) { | |
1081 | BlockDriverState *bs_over; | |
1082 | int64_t total_sectors_over; | |
1083 | const char *filename_over; | |
1084 | ||
1085 | qprintf(quiet, "Warning: Image size mismatch!\n"); | |
1086 | if (total_sectors1 > total_sectors2) { | |
1087 | total_sectors_over = total_sectors1; | |
1088 | bs_over = bs1; | |
1089 | filename_over = filename1; | |
1090 | } else { | |
1091 | total_sectors_over = total_sectors2; | |
1092 | bs_over = bs2; | |
1093 | filename_over = filename2; | |
1094 | } | |
1095 | ||
1096 | for (;;) { | |
1097 | nb_sectors = sectors_to_process(total_sectors_over, sector_num); | |
1098 | if (nb_sectors <= 0) { | |
1099 | break; | |
1100 | } | |
1101 | ret = bdrv_is_allocated_above(bs_over, NULL, sector_num, | |
1102 | nb_sectors, &pnum); | |
1103 | if (ret < 0) { | |
1104 | ret = 3; | |
1105 | error_report("Sector allocation test failed for %s", | |
1106 | filename_over); | |
1107 | goto out; | |
1108 | ||
1109 | } | |
1110 | nb_sectors = pnum; | |
1111 | if (ret) { | |
1112 | ret = check_empty_sectors(bs_over, sector_num, nb_sectors, | |
1113 | filename_over, buf1, quiet); | |
1114 | if (ret) { | |
1115 | if (ret < 0) { | |
d14ed18c MR |
1116 | error_report("Error while reading offset %" PRId64 |
1117 | " of %s: %s", sectors_to_bytes(sector_num), | |
1118 | filename_over, strerror(-ret)); | |
36452f12 | 1119 | ret = 4; |
d14ed18c MR |
1120 | } |
1121 | goto out; | |
1122 | } | |
1123 | } | |
1124 | sector_num += nb_sectors; | |
1125 | qemu_progress_print(((float) nb_sectors / progress_base)*100, 100); | |
1126 | } | |
1127 | } | |
1128 | ||
1129 | qprintf(quiet, "Images are identical.\n"); | |
1130 | ret = 0; | |
1131 | ||
1132 | out: | |
4f6fd349 | 1133 | bdrv_unref(bs2); |
d14ed18c MR |
1134 | qemu_vfree(buf1); |
1135 | qemu_vfree(buf2); | |
1136 | out2: | |
4f6fd349 | 1137 | bdrv_unref(bs1); |
d14ed18c MR |
1138 | out3: |
1139 | qemu_progress_end(); | |
1140 | return ret; | |
1141 | } | |
1142 | ||
ea2384d3 FB |
1143 | static int img_convert(int argc, char **argv) |
1144 | { | |
24f833cd | 1145 | int c, n, n1, bs_n, bs_i, compress, cluster_sectors, skip_create; |
13c28af8 | 1146 | int64_t ret = 0; |
661a0f71 FS |
1147 | int progress = 0, flags; |
1148 | const char *fmt, *out_fmt, *cache, *out_baseimg, *out_filename; | |
b50cbabc | 1149 | BlockDriver *drv, *proto_drv; |
c2abccec | 1150 | BlockDriverState **bs = NULL, *out_bs = NULL; |
802c3d4c | 1151 | int64_t total_sectors, nb_sectors, sector_num, bs_offset; |
96b8f136 | 1152 | uint64_t bs_sectors; |
c2abccec | 1153 | uint8_t * buf = NULL; |
f2521c90 | 1154 | size_t bufsectors = IO_BUF_SIZE / BDRV_SECTOR_SIZE; |
ea2384d3 | 1155 | const uint8_t *buf1; |
faea38e7 | 1156 | BlockDriverInfo bdi; |
b50cbabc | 1157 | QEMUOptionParameter *param = NULL, *create_options = NULL; |
a18953fb | 1158 | QEMUOptionParameter *out_baseimg_param; |
efa84d43 | 1159 | char *options = NULL; |
51ef6727 | 1160 | const char *snapshot_name = NULL; |
a22f123c | 1161 | int min_sparse = 8; /* Need at least 4k of zeros for sparse detection */ |
f382d43a | 1162 | bool quiet = false; |
cc84d90f | 1163 | Error *local_err = NULL; |
ef80654d | 1164 | QemuOpts *sn_opts = NULL; |
ea2384d3 FB |
1165 | |
1166 | fmt = NULL; | |
1167 | out_fmt = "raw"; | |
661a0f71 | 1168 | cache = "unsafe"; |
f58c7b35 | 1169 | out_baseimg = NULL; |
eec77d9e | 1170 | compress = 0; |
b2e10493 | 1171 | skip_create = 0; |
ea2384d3 | 1172 | for(;;) { |
ef80654d | 1173 | c = getopt(argc, argv, "f:O:B:s:hce6o:pS:t:qnl:"); |
b8fb60da | 1174 | if (c == -1) { |
ea2384d3 | 1175 | break; |
b8fb60da | 1176 | } |
ea2384d3 | 1177 | switch(c) { |
ef87394c | 1178 | case '?': |
ea2384d3 FB |
1179 | case 'h': |
1180 | help(); | |
1181 | break; | |
1182 | case 'f': | |
1183 | fmt = optarg; | |
1184 | break; | |
1185 | case 'O': | |
1186 | out_fmt = optarg; | |
1187 | break; | |
f58c7b35 TS |
1188 | case 'B': |
1189 | out_baseimg = optarg; | |
1190 | break; | |
ea2384d3 | 1191 | case 'c': |
eec77d9e | 1192 | compress = 1; |
ea2384d3 FB |
1193 | break; |
1194 | case 'e': | |
9d42e15d | 1195 | error_report("option -e is deprecated, please use \'-o " |
eec77d9e | 1196 | "encryption\' instead!"); |
2dc8328b | 1197 | ret = -1; |
64bb01aa | 1198 | goto fail_getopt; |
ec36ba14 | 1199 | case '6': |
9d42e15d | 1200 | error_report("option -6 is deprecated, please use \'-o " |
eec77d9e | 1201 | "compat6\' instead!"); |
2dc8328b | 1202 | ret = -1; |
64bb01aa | 1203 | goto fail_getopt; |
efa84d43 | 1204 | case 'o': |
2dc8328b KW |
1205 | if (!is_valid_option_list(optarg)) { |
1206 | error_report("Invalid option list: %s", optarg); | |
1207 | ret = -1; | |
64bb01aa | 1208 | goto fail_getopt; |
2dc8328b KW |
1209 | } |
1210 | if (!options) { | |
1211 | options = g_strdup(optarg); | |
1212 | } else { | |
1213 | char *old_options = options; | |
1214 | options = g_strdup_printf("%s,%s", options, optarg); | |
1215 | g_free(old_options); | |
1216 | } | |
efa84d43 | 1217 | break; |
51ef6727 | 1218 | case 's': |
1219 | snapshot_name = optarg; | |
1220 | break; | |
ef80654d WX |
1221 | case 'l': |
1222 | if (strstart(optarg, SNAPSHOT_OPT_BASE, NULL)) { | |
1223 | sn_opts = qemu_opts_parse(&internal_snapshot_opts, optarg, 0); | |
1224 | if (!sn_opts) { | |
1225 | error_report("Failed in parsing snapshot param '%s'", | |
1226 | optarg); | |
2dc8328b | 1227 | ret = -1; |
64bb01aa | 1228 | goto fail_getopt; |
ef80654d WX |
1229 | } |
1230 | } else { | |
1231 | snapshot_name = optarg; | |
1232 | } | |
1233 | break; | |
a22f123c KW |
1234 | case 'S': |
1235 | { | |
1236 | int64_t sval; | |
e36b3695 MA |
1237 | char *end; |
1238 | sval = strtosz_suffix(optarg, &end, STRTOSZ_DEFSUFFIX_B); | |
1239 | if (sval < 0 || *end) { | |
a22f123c | 1240 | error_report("Invalid minimum zero buffer size for sparse output specified"); |
2dc8328b | 1241 | ret = -1; |
64bb01aa | 1242 | goto fail_getopt; |
a22f123c KW |
1243 | } |
1244 | ||
1245 | min_sparse = sval / BDRV_SECTOR_SIZE; | |
1246 | break; | |
1247 | } | |
6b837bc4 JS |
1248 | case 'p': |
1249 | progress = 1; | |
1250 | break; | |
661a0f71 FS |
1251 | case 't': |
1252 | cache = optarg; | |
1253 | break; | |
f382d43a MR |
1254 | case 'q': |
1255 | quiet = true; | |
1256 | break; | |
b2e10493 AD |
1257 | case 'n': |
1258 | skip_create = 1; | |
1259 | break; | |
ea2384d3 FB |
1260 | } |
1261 | } | |
3b46e624 | 1262 | |
64bb01aa | 1263 | /* Initialize before goto out */ |
f382d43a MR |
1264 | if (quiet) { |
1265 | progress = 0; | |
1266 | } | |
64bb01aa KW |
1267 | qemu_progress_init(progress, 1.0); |
1268 | ||
f382d43a | 1269 | |
926c2d23 | 1270 | bs_n = argc - optind - 1; |
a283cb6e | 1271 | out_filename = bs_n >= 1 ? argv[argc - 1] : NULL; |
f58c7b35 | 1272 | |
2dc8328b | 1273 | if (options && has_help_option(options)) { |
4ac8aacd JS |
1274 | ret = print_block_option_help(out_filename, out_fmt); |
1275 | goto out; | |
1276 | } | |
1277 | ||
a283cb6e KW |
1278 | if (bs_n < 1) { |
1279 | help(); | |
1280 | } | |
1281 | ||
1282 | ||
c2abccec | 1283 | if (bs_n > 1 && out_baseimg) { |
15654a6d JS |
1284 | error_report("-B makes no sense when concatenating multiple input " |
1285 | "images"); | |
31ca34b8 JS |
1286 | ret = -1; |
1287 | goto out; | |
c2abccec | 1288 | } |
f8111c24 | 1289 | |
6b837bc4 JS |
1290 | qemu_progress_print(0, 100); |
1291 | ||
7267c094 | 1292 | bs = g_malloc0(bs_n * sizeof(BlockDriverState *)); |
926c2d23 AZ |
1293 | |
1294 | total_sectors = 0; | |
1295 | for (bs_i = 0; bs_i < bs_n; bs_i++) { | |
9ffe3332 KW |
1296 | char *id = bs_n > 1 ? g_strdup_printf("source %d", bs_i) |
1297 | : g_strdup("source"); | |
1298 | bs[bs_i] = bdrv_new_open(id, argv[optind + bs_i], fmt, BDRV_O_FLAGS, | |
1299 | true, quiet); | |
1300 | g_free(id); | |
c2abccec | 1301 | if (!bs[bs_i]) { |
15654a6d | 1302 | error_report("Could not open '%s'", argv[optind + bs_i]); |
c2abccec MK |
1303 | ret = -1; |
1304 | goto out; | |
1305 | } | |
926c2d23 AZ |
1306 | bdrv_get_geometry(bs[bs_i], &bs_sectors); |
1307 | total_sectors += bs_sectors; | |
1308 | } | |
ea2384d3 | 1309 | |
ef80654d WX |
1310 | if (sn_opts) { |
1311 | ret = bdrv_snapshot_load_tmp(bs[0], | |
1312 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_ID), | |
1313 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_NAME), | |
1314 | &local_err); | |
1315 | } else if (snapshot_name != NULL) { | |
51ef6727 | 1316 | if (bs_n > 1) { |
6daf194d | 1317 | error_report("No support for concatenating multiple snapshot"); |
51ef6727 | 1318 | ret = -1; |
1319 | goto out; | |
1320 | } | |
7b4c4781 WX |
1321 | |
1322 | bdrv_snapshot_load_tmp_by_id_or_name(bs[0], snapshot_name, &local_err); | |
ef80654d | 1323 | } |
84d18f06 | 1324 | if (local_err) { |
ef80654d WX |
1325 | error_report("Failed to load snapshot: %s", |
1326 | error_get_pretty(local_err)); | |
1327 | error_free(local_err); | |
1328 | ret = -1; | |
1329 | goto out; | |
51ef6727 | 1330 | } |
1331 | ||
efa84d43 | 1332 | /* Find driver and parse its options */ |
ea2384d3 | 1333 | drv = bdrv_find_format(out_fmt); |
c2abccec | 1334 | if (!drv) { |
15654a6d | 1335 | error_report("Unknown file format '%s'", out_fmt); |
c2abccec MK |
1336 | ret = -1; |
1337 | goto out; | |
1338 | } | |
efa84d43 | 1339 | |
98289620 | 1340 | proto_drv = bdrv_find_protocol(out_filename, true); |
c2abccec | 1341 | if (!proto_drv) { |
15654a6d | 1342 | error_report("Unknown protocol '%s'", out_filename); |
c2abccec MK |
1343 | ret = -1; |
1344 | goto out; | |
1345 | } | |
b50cbabc MK |
1346 | |
1347 | create_options = append_option_parameters(create_options, | |
1348 | drv->create_options); | |
1349 | create_options = append_option_parameters(create_options, | |
1350 | proto_drv->create_options); | |
db08adf5 | 1351 | |
efa84d43 | 1352 | if (options) { |
b50cbabc | 1353 | param = parse_option_parameters(options, create_options, param); |
efa84d43 | 1354 | if (param == NULL) { |
15654a6d | 1355 | error_report("Invalid options for file format '%s'.", out_fmt); |
c2abccec MK |
1356 | ret = -1; |
1357 | goto out; | |
efa84d43 KW |
1358 | } |
1359 | } else { | |
b50cbabc | 1360 | param = parse_option_parameters("", create_options, param); |
efa84d43 KW |
1361 | } |
1362 | ||
1363 | set_option_parameter_int(param, BLOCK_OPT_SIZE, total_sectors * 512); | |
eec77d9e | 1364 | ret = add_old_style_options(out_fmt, param, out_baseimg, NULL); |
c2abccec MK |
1365 | if (ret < 0) { |
1366 | goto out; | |
1367 | } | |
efa84d43 | 1368 | |
a18953fb KW |
1369 | /* Get backing file name if -o backing_file was used */ |
1370 | out_baseimg_param = get_option_parameter(param, BLOCK_OPT_BACKING_FILE); | |
1371 | if (out_baseimg_param) { | |
1372 | out_baseimg = out_baseimg_param->value.s; | |
1373 | } | |
1374 | ||
efa84d43 | 1375 | /* Check if compression is supported */ |
eec77d9e | 1376 | if (compress) { |
efa84d43 KW |
1377 | QEMUOptionParameter *encryption = |
1378 | get_option_parameter(param, BLOCK_OPT_ENCRYPT); | |
41521fa4 KW |
1379 | QEMUOptionParameter *preallocation = |
1380 | get_option_parameter(param, BLOCK_OPT_PREALLOC); | |
efa84d43 KW |
1381 | |
1382 | if (!drv->bdrv_write_compressed) { | |
15654a6d | 1383 | error_report("Compression not supported for this file format"); |
c2abccec MK |
1384 | ret = -1; |
1385 | goto out; | |
efa84d43 KW |
1386 | } |
1387 | ||
1388 | if (encryption && encryption->value.n) { | |
15654a6d JS |
1389 | error_report("Compression and encryption not supported at " |
1390 | "the same time"); | |
c2abccec MK |
1391 | ret = -1; |
1392 | goto out; | |
efa84d43 | 1393 | } |
41521fa4 KW |
1394 | |
1395 | if (preallocation && preallocation->value.s | |
1396 | && strcmp(preallocation->value.s, "off")) | |
1397 | { | |
1398 | error_report("Compression and preallocation not supported at " | |
1399 | "the same time"); | |
1400 | ret = -1; | |
1401 | goto out; | |
1402 | } | |
efa84d43 KW |
1403 | } |
1404 | ||
b2e10493 AD |
1405 | if (!skip_create) { |
1406 | /* Create the new image */ | |
cc84d90f | 1407 | ret = bdrv_create(drv, out_filename, param, &local_err); |
b2e10493 | 1408 | if (ret < 0) { |
cc84d90f HR |
1409 | error_report("%s: error while converting %s: %s", |
1410 | out_filename, out_fmt, error_get_pretty(local_err)); | |
1411 | error_free(local_err); | |
b2e10493 | 1412 | goto out; |
ea2384d3 FB |
1413 | } |
1414 | } | |
3b46e624 | 1415 | |
5a37b60a | 1416 | flags = min_sparse ? (BDRV_O_RDWR | BDRV_O_UNMAP) : BDRV_O_RDWR; |
c3993cdc | 1417 | ret = bdrv_parse_cache_flags(cache, &flags); |
661a0f71 FS |
1418 | if (ret < 0) { |
1419 | error_report("Invalid cache option: %s", cache); | |
1420 | return -1; | |
1421 | } | |
1422 | ||
9ffe3332 | 1423 | out_bs = bdrv_new_open("target", out_filename, out_fmt, flags, true, quiet); |
c2abccec MK |
1424 | if (!out_bs) { |
1425 | ret = -1; | |
1426 | goto out; | |
1427 | } | |
ea2384d3 | 1428 | |
926c2d23 AZ |
1429 | bs_i = 0; |
1430 | bs_offset = 0; | |
1431 | bdrv_get_geometry(bs[0], &bs_sectors); | |
f2521c90 PL |
1432 | |
1433 | /* increase bufsectors from the default 4096 (2M) if opt_transfer_length | |
1434 | * or discard_alignment of the out_bs is greater. Limit to 32768 (16MB) | |
1435 | * as maximum. */ | |
1436 | bufsectors = MIN(32768, | |
1437 | MAX(bufsectors, MAX(out_bs->bl.opt_transfer_length, | |
1438 | out_bs->bl.discard_alignment)) | |
1439 | ); | |
1440 | ||
1441 | buf = qemu_blockalign(out_bs, bufsectors * BDRV_SECTOR_SIZE); | |
926c2d23 | 1442 | |
b2e10493 AD |
1443 | if (skip_create) { |
1444 | int64_t output_length = bdrv_getlength(out_bs); | |
1445 | if (output_length < 0) { | |
1446 | error_report("unable to get output image length: %s\n", | |
1447 | strerror(-output_length)); | |
1448 | ret = -1; | |
1449 | goto out; | |
1450 | } else if (output_length < total_sectors << BDRV_SECTOR_BITS) { | |
1451 | error_report("output file is smaller than input file"); | |
1452 | ret = -1; | |
1453 | goto out; | |
1454 | } | |
1455 | } | |
1456 | ||
24f833cd PL |
1457 | cluster_sectors = 0; |
1458 | ret = bdrv_get_info(out_bs, &bdi); | |
1459 | if (ret < 0) { | |
1460 | if (compress) { | |
15654a6d | 1461 | error_report("could not get block driver info"); |
c2abccec MK |
1462 | goto out; |
1463 | } | |
24f833cd PL |
1464 | } else { |
1465 | cluster_sectors = bdi.cluster_size / BDRV_SECTOR_SIZE; | |
1466 | } | |
1467 | ||
1468 | if (compress) { | |
1469 | if (cluster_sectors <= 0 || cluster_sectors > bufsectors) { | |
15654a6d | 1470 | error_report("invalid cluster size"); |
c2abccec MK |
1471 | ret = -1; |
1472 | goto out; | |
1473 | } | |
ea2384d3 | 1474 | sector_num = 0; |
6b837bc4 JS |
1475 | |
1476 | nb_sectors = total_sectors; | |
6b837bc4 | 1477 | |
ea2384d3 | 1478 | for(;;) { |
926c2d23 AZ |
1479 | int64_t bs_num; |
1480 | int remainder; | |
1481 | uint8_t *buf2; | |
1482 | ||
ea2384d3 FB |
1483 | nb_sectors = total_sectors - sector_num; |
1484 | if (nb_sectors <= 0) | |
1485 | break; | |
1486 | if (nb_sectors >= cluster_sectors) | |
1487 | n = cluster_sectors; | |
1488 | else | |
1489 | n = nb_sectors; | |
926c2d23 AZ |
1490 | |
1491 | bs_num = sector_num - bs_offset; | |
1492 | assert (bs_num >= 0); | |
1493 | remainder = n; | |
1494 | buf2 = buf; | |
1495 | while (remainder > 0) { | |
1496 | int nlow; | |
1497 | while (bs_num == bs_sectors) { | |
1498 | bs_i++; | |
1499 | assert (bs_i < bs_n); | |
1500 | bs_offset += bs_sectors; | |
1501 | bdrv_get_geometry(bs[bs_i], &bs_sectors); | |
1502 | bs_num = 0; | |
0bfcd599 BS |
1503 | /* printf("changing part: sector_num=%" PRId64 ", " |
1504 | "bs_i=%d, bs_offset=%" PRId64 ", bs_sectors=%" PRId64 | |
1505 | "\n", sector_num, bs_i, bs_offset, bs_sectors); */ | |
926c2d23 AZ |
1506 | } |
1507 | assert (bs_num < bs_sectors); | |
1508 | ||
1509 | nlow = (remainder > bs_sectors - bs_num) ? bs_sectors - bs_num : remainder; | |
1510 | ||
c2abccec MK |
1511 | ret = bdrv_read(bs[bs_i], bs_num, buf2, nlow); |
1512 | if (ret < 0) { | |
3fba9d81 SH |
1513 | error_report("error while reading sector %" PRId64 ": %s", |
1514 | bs_num, strerror(-ret)); | |
c2abccec MK |
1515 | goto out; |
1516 | } | |
926c2d23 AZ |
1517 | |
1518 | buf2 += nlow * 512; | |
1519 | bs_num += nlow; | |
1520 | ||
1521 | remainder -= nlow; | |
1522 | } | |
1523 | assert (remainder == 0); | |
1524 | ||
54f106d5 SH |
1525 | if (!buffer_is_zero(buf, n * BDRV_SECTOR_SIZE)) { |
1526 | ret = bdrv_write_compressed(out_bs, sector_num, buf, n); | |
c2abccec | 1527 | if (ret != 0) { |
3fba9d81 SH |
1528 | error_report("error while compressing sector %" PRId64 |
1529 | ": %s", sector_num, strerror(-ret)); | |
c2abccec MK |
1530 | goto out; |
1531 | } | |
ea2384d3 FB |
1532 | } |
1533 | sector_num += n; | |
13c28af8 | 1534 | qemu_progress_print(100.0 * sector_num / total_sectors, 0); |
ea2384d3 | 1535 | } |
faea38e7 FB |
1536 | /* signal EOF to align */ |
1537 | bdrv_write_compressed(out_bs, 0, NULL, 0); | |
ea2384d3 | 1538 | } else { |
802c3d4c PL |
1539 | int64_t sectors_to_read, sectors_read, sector_num_next_status; |
1540 | bool count_allocated_sectors; | |
11b6699a | 1541 | int has_zero_init = min_sparse ? bdrv_has_zero_init(out_bs) : 0; |
f2feebbd | 1542 | |
5a37b60a PL |
1543 | if (!has_zero_init && bdrv_can_write_zeroes_with_unmap(out_bs)) { |
1544 | ret = bdrv_make_zero(out_bs, BDRV_REQ_MAY_UNMAP); | |
1545 | if (ret < 0) { | |
1546 | goto out; | |
1547 | } | |
1548 | has_zero_init = 1; | |
1549 | } | |
1550 | ||
802c3d4c PL |
1551 | sectors_to_read = total_sectors; |
1552 | count_allocated_sectors = progress && (out_baseimg || has_zero_init); | |
1553 | restart: | |
f58c7b35 | 1554 | sector_num = 0; // total number of sectors converted so far |
802c3d4c PL |
1555 | sectors_read = 0; |
1556 | sector_num_next_status = 0; | |
6b837bc4 | 1557 | |
ea2384d3 FB |
1558 | for(;;) { |
1559 | nb_sectors = total_sectors - sector_num; | |
b8fb60da | 1560 | if (nb_sectors <= 0) { |
802c3d4c PL |
1561 | if (count_allocated_sectors) { |
1562 | sectors_to_read = sectors_read; | |
1563 | count_allocated_sectors = false; | |
1564 | goto restart; | |
1565 | } | |
13c28af8 | 1566 | ret = 0; |
ea2384d3 | 1567 | break; |
b8fb60da | 1568 | } |
926c2d23 AZ |
1569 | |
1570 | while (sector_num - bs_offset >= bs_sectors) { | |
1571 | bs_i ++; | |
1572 | assert (bs_i < bs_n); | |
1573 | bs_offset += bs_sectors; | |
1574 | bdrv_get_geometry(bs[bs_i], &bs_sectors); | |
0bfcd599 BS |
1575 | /* printf("changing part: sector_num=%" PRId64 ", bs_i=%d, " |
1576 | "bs_offset=%" PRId64 ", bs_sectors=%" PRId64 "\n", | |
926c2d23 AZ |
1577 | sector_num, bs_i, bs_offset, bs_sectors); */ |
1578 | } | |
1579 | ||
13c28af8 PL |
1580 | if ((out_baseimg || has_zero_init) && |
1581 | sector_num >= sector_num_next_status) { | |
1582 | n = nb_sectors > INT_MAX ? INT_MAX : nb_sectors; | |
1583 | ret = bdrv_get_block_status(bs[bs_i], sector_num - bs_offset, | |
1584 | n, &n1); | |
e4a86f88 | 1585 | if (ret < 0) { |
13c28af8 PL |
1586 | error_report("error while reading block status of sector %" |
1587 | PRId64 ": %s", sector_num - bs_offset, | |
1588 | strerror(-ret)); | |
e4a86f88 PB |
1589 | goto out; |
1590 | } | |
13c28af8 PL |
1591 | /* If the output image is zero initialized, we are not working |
1592 | * on a shared base and the input is zero we can skip the next | |
1593 | * n1 sectors */ | |
1594 | if (has_zero_init && !out_baseimg && (ret & BDRV_BLOCK_ZERO)) { | |
e4a86f88 PB |
1595 | sector_num += n1; |
1596 | continue; | |
93c65b47 | 1597 | } |
13c28af8 PL |
1598 | /* If the output image is being created as a copy on write |
1599 | * image, assume that sectors which are unallocated in the | |
1600 | * input image are present in both the output's and input's | |
1601 | * base images (no need to copy them). */ | |
1602 | if (out_baseimg) { | |
1603 | if (!(ret & BDRV_BLOCK_DATA)) { | |
1604 | sector_num += n1; | |
1605 | continue; | |
1606 | } | |
1607 | /* The next 'n1' sectors are allocated in the input image. | |
1608 | * Copy only those as they may be followed by unallocated | |
1609 | * sectors. */ | |
1610 | nb_sectors = n1; | |
1611 | } | |
1612 | /* avoid redundant callouts to get_block_status */ | |
1613 | sector_num_next_status = sector_num + n1; | |
f58c7b35 TS |
1614 | } |
1615 | ||
f2521c90 | 1616 | n = MIN(nb_sectors, bufsectors); |
24f833cd PL |
1617 | |
1618 | /* round down request length to an aligned sector, but | |
1619 | * do not bother doing this on short requests. They happen | |
1620 | * when we found an all-zero area, and the next sector to | |
1621 | * write will not be sector_num + n. */ | |
1622 | if (cluster_sectors > 0 && n >= cluster_sectors) { | |
1623 | int64_t next_aligned_sector = (sector_num + n); | |
1624 | next_aligned_sector -= next_aligned_sector % cluster_sectors; | |
1625 | if (sector_num + n > next_aligned_sector) { | |
1626 | n = next_aligned_sector - sector_num; | |
1627 | } | |
1628 | } | |
1629 | ||
13c28af8 | 1630 | n = MIN(n, bs_sectors - (sector_num - bs_offset)); |
13c28af8 | 1631 | |
802c3d4c PL |
1632 | sectors_read += n; |
1633 | if (count_allocated_sectors) { | |
1634 | sector_num += n; | |
1635 | continue; | |
1636 | } | |
1637 | ||
1638 | n1 = n; | |
c2abccec MK |
1639 | ret = bdrv_read(bs[bs_i], sector_num - bs_offset, buf, n); |
1640 | if (ret < 0) { | |
3fba9d81 SH |
1641 | error_report("error while reading sector %" PRId64 ": %s", |
1642 | sector_num - bs_offset, strerror(-ret)); | |
c2abccec MK |
1643 | goto out; |
1644 | } | |
ea2384d3 FB |
1645 | /* NOTE: at the same time we convert, we do not write zero |
1646 | sectors to have a chance to compress the image. Ideally, we | |
1647 | should add a specific call to have the info to go faster */ | |
1648 | buf1 = buf; | |
1649 | while (n > 0) { | |
11212d8f | 1650 | if (!has_zero_init || |
a22f123c | 1651 | is_allocated_sectors_min(buf1, n, &n1, min_sparse)) { |
c2abccec MK |
1652 | ret = bdrv_write(out_bs, sector_num, buf1, n1); |
1653 | if (ret < 0) { | |
3fba9d81 SH |
1654 | error_report("error while writing sector %" PRId64 |
1655 | ": %s", sector_num, strerror(-ret)); | |
c2abccec MK |
1656 | goto out; |
1657 | } | |
ea2384d3 FB |
1658 | } |
1659 | sector_num += n1; | |
1660 | n -= n1; | |
1661 | buf1 += n1 * 512; | |
1662 | } | |
802c3d4c | 1663 | qemu_progress_print(100.0 * sectors_read / sectors_to_read, 0); |
ea2384d3 FB |
1664 | } |
1665 | } | |
c2abccec | 1666 | out: |
13c28af8 PL |
1667 | if (!ret) { |
1668 | qemu_progress_print(100, 0); | |
1669 | } | |
6b837bc4 | 1670 | qemu_progress_end(); |
c2abccec MK |
1671 | free_option_parameters(create_options); |
1672 | free_option_parameters(param); | |
bb1c0597 | 1673 | qemu_vfree(buf); |
ef80654d WX |
1674 | if (sn_opts) { |
1675 | qemu_opts_del(sn_opts); | |
1676 | } | |
c2abccec | 1677 | if (out_bs) { |
4f6fd349 | 1678 | bdrv_unref(out_bs); |
c2abccec | 1679 | } |
31ca34b8 JS |
1680 | if (bs) { |
1681 | for (bs_i = 0; bs_i < bs_n; bs_i++) { | |
1682 | if (bs[bs_i]) { | |
4f6fd349 | 1683 | bdrv_unref(bs[bs_i]); |
31ca34b8 | 1684 | } |
c2abccec | 1685 | } |
7267c094 | 1686 | g_free(bs); |
c2abccec | 1687 | } |
64bb01aa KW |
1688 | fail_getopt: |
1689 | g_free(options); | |
1690 | ||
c2abccec MK |
1691 | if (ret) { |
1692 | return 1; | |
1693 | } | |
ea2384d3 FB |
1694 | return 0; |
1695 | } | |
1696 | ||
57d1a2b6 | 1697 | |
faea38e7 FB |
1698 | static void dump_snapshots(BlockDriverState *bs) |
1699 | { | |
1700 | QEMUSnapshotInfo *sn_tab, *sn; | |
1701 | int nb_sns, i; | |
faea38e7 FB |
1702 | |
1703 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
1704 | if (nb_sns <= 0) | |
1705 | return; | |
1706 | printf("Snapshot list:\n"); | |
5b917044 WX |
1707 | bdrv_snapshot_dump(fprintf, stdout, NULL); |
1708 | printf("\n"); | |
faea38e7 FB |
1709 | for(i = 0; i < nb_sns; i++) { |
1710 | sn = &sn_tab[i]; | |
5b917044 WX |
1711 | bdrv_snapshot_dump(fprintf, stdout, sn); |
1712 | printf("\n"); | |
faea38e7 | 1713 | } |
7267c094 | 1714 | g_free(sn_tab); |
faea38e7 FB |
1715 | } |
1716 | ||
9699bf0d SH |
1717 | static void dump_json_image_info_list(ImageInfoList *list) |
1718 | { | |
1719 | Error *errp = NULL; | |
1720 | QString *str; | |
1721 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
1722 | QObject *obj; | |
1723 | visit_type_ImageInfoList(qmp_output_get_visitor(ov), | |
1724 | &list, NULL, &errp); | |
1725 | obj = qmp_output_get_qobject(ov); | |
1726 | str = qobject_to_json_pretty(obj); | |
1727 | assert(str != NULL); | |
1728 | printf("%s\n", qstring_get_str(str)); | |
1729 | qobject_decref(obj); | |
1730 | qmp_output_visitor_cleanup(ov); | |
1731 | QDECREF(str); | |
1732 | } | |
1733 | ||
c054b3fd BC |
1734 | static void dump_json_image_info(ImageInfo *info) |
1735 | { | |
1736 | Error *errp = NULL; | |
1737 | QString *str; | |
1738 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
1739 | QObject *obj; | |
1740 | visit_type_ImageInfo(qmp_output_get_visitor(ov), | |
1741 | &info, NULL, &errp); | |
1742 | obj = qmp_output_get_qobject(ov); | |
1743 | str = qobject_to_json_pretty(obj); | |
1744 | assert(str != NULL); | |
1745 | printf("%s\n", qstring_get_str(str)); | |
1746 | qobject_decref(obj); | |
1747 | qmp_output_visitor_cleanup(ov); | |
1748 | QDECREF(str); | |
1749 | } | |
1750 | ||
9699bf0d SH |
1751 | static void dump_human_image_info_list(ImageInfoList *list) |
1752 | { | |
1753 | ImageInfoList *elem; | |
1754 | bool delim = false; | |
1755 | ||
1756 | for (elem = list; elem; elem = elem->next) { | |
1757 | if (delim) { | |
1758 | printf("\n"); | |
1759 | } | |
1760 | delim = true; | |
1761 | ||
5b917044 | 1762 | bdrv_image_info_dump(fprintf, stdout, elem->value); |
9699bf0d SH |
1763 | } |
1764 | } | |
1765 | ||
1766 | static gboolean str_equal_func(gconstpointer a, gconstpointer b) | |
1767 | { | |
1768 | return strcmp(a, b) == 0; | |
1769 | } | |
1770 | ||
1771 | /** | |
1772 | * Open an image file chain and return an ImageInfoList | |
1773 | * | |
1774 | * @filename: topmost image filename | |
1775 | * @fmt: topmost image format (may be NULL to autodetect) | |
1776 | * @chain: true - enumerate entire backing file chain | |
1777 | * false - only topmost image file | |
1778 | * | |
1779 | * Returns a list of ImageInfo objects or NULL if there was an error opening an | |
1780 | * image file. If there was an error a message will have been printed to | |
1781 | * stderr. | |
1782 | */ | |
1783 | static ImageInfoList *collect_image_info_list(const char *filename, | |
1784 | const char *fmt, | |
1785 | bool chain) | |
1786 | { | |
1787 | ImageInfoList *head = NULL; | |
1788 | ImageInfoList **last = &head; | |
1789 | GHashTable *filenames; | |
43526ec8 | 1790 | Error *err = NULL; |
9699bf0d SH |
1791 | |
1792 | filenames = g_hash_table_new_full(g_str_hash, str_equal_func, NULL, NULL); | |
1793 | ||
1794 | while (filename) { | |
1795 | BlockDriverState *bs; | |
1796 | ImageInfo *info; | |
1797 | ImageInfoList *elem; | |
1798 | ||
1799 | if (g_hash_table_lookup_extended(filenames, filename, NULL, NULL)) { | |
1800 | error_report("Backing file '%s' creates an infinite loop.", | |
1801 | filename); | |
1802 | goto err; | |
1803 | } | |
1804 | g_hash_table_insert(filenames, (gpointer)filename, NULL); | |
1805 | ||
9ffe3332 KW |
1806 | bs = bdrv_new_open("image", filename, fmt, |
1807 | BDRV_O_FLAGS | BDRV_O_NO_BACKING, false, false); | |
9699bf0d SH |
1808 | if (!bs) { |
1809 | goto err; | |
1810 | } | |
1811 | ||
43526ec8 | 1812 | bdrv_query_image_info(bs, &info, &err); |
84d18f06 | 1813 | if (err) { |
43526ec8 WX |
1814 | error_report("%s", error_get_pretty(err)); |
1815 | error_free(err); | |
bdf866fe | 1816 | bdrv_unref(bs); |
43526ec8 | 1817 | goto err; |
fb0ed453 | 1818 | } |
9699bf0d SH |
1819 | |
1820 | elem = g_new0(ImageInfoList, 1); | |
1821 | elem->value = info; | |
1822 | *last = elem; | |
1823 | last = &elem->next; | |
1824 | ||
4f6fd349 | 1825 | bdrv_unref(bs); |
9699bf0d SH |
1826 | |
1827 | filename = fmt = NULL; | |
1828 | if (chain) { | |
1829 | if (info->has_full_backing_filename) { | |
1830 | filename = info->full_backing_filename; | |
1831 | } else if (info->has_backing_filename) { | |
1832 | filename = info->backing_filename; | |
1833 | } | |
1834 | if (info->has_backing_filename_format) { | |
1835 | fmt = info->backing_filename_format; | |
1836 | } | |
1837 | } | |
1838 | } | |
1839 | g_hash_table_destroy(filenames); | |
1840 | return head; | |
1841 | ||
1842 | err: | |
1843 | qapi_free_ImageInfoList(head); | |
1844 | g_hash_table_destroy(filenames); | |
1845 | return NULL; | |
1846 | } | |
1847 | ||
c054b3fd BC |
1848 | static int img_info(int argc, char **argv) |
1849 | { | |
1850 | int c; | |
1851 | OutputFormat output_format = OFORMAT_HUMAN; | |
9699bf0d | 1852 | bool chain = false; |
c054b3fd | 1853 | const char *filename, *fmt, *output; |
9699bf0d | 1854 | ImageInfoList *list; |
c054b3fd | 1855 | |
ea2384d3 | 1856 | fmt = NULL; |
c054b3fd | 1857 | output = NULL; |
ea2384d3 | 1858 | for(;;) { |
c054b3fd BC |
1859 | int option_index = 0; |
1860 | static const struct option long_options[] = { | |
1861 | {"help", no_argument, 0, 'h'}, | |
1862 | {"format", required_argument, 0, 'f'}, | |
1863 | {"output", required_argument, 0, OPTION_OUTPUT}, | |
9699bf0d | 1864 | {"backing-chain", no_argument, 0, OPTION_BACKING_CHAIN}, |
c054b3fd BC |
1865 | {0, 0, 0, 0} |
1866 | }; | |
1867 | c = getopt_long(argc, argv, "f:h", | |
1868 | long_options, &option_index); | |
b8fb60da | 1869 | if (c == -1) { |
ea2384d3 | 1870 | break; |
b8fb60da | 1871 | } |
ea2384d3 | 1872 | switch(c) { |
ef87394c | 1873 | case '?': |
ea2384d3 FB |
1874 | case 'h': |
1875 | help(); | |
1876 | break; | |
1877 | case 'f': | |
1878 | fmt = optarg; | |
1879 | break; | |
c054b3fd BC |
1880 | case OPTION_OUTPUT: |
1881 | output = optarg; | |
1882 | break; | |
9699bf0d SH |
1883 | case OPTION_BACKING_CHAIN: |
1884 | chain = true; | |
1885 | break; | |
ea2384d3 FB |
1886 | } |
1887 | } | |
fc11eb26 | 1888 | if (optind != argc - 1) { |
ea2384d3 | 1889 | help(); |
b8fb60da | 1890 | } |
ea2384d3 FB |
1891 | filename = argv[optind++]; |
1892 | ||
c054b3fd BC |
1893 | if (output && !strcmp(output, "json")) { |
1894 | output_format = OFORMAT_JSON; | |
1895 | } else if (output && !strcmp(output, "human")) { | |
1896 | output_format = OFORMAT_HUMAN; | |
1897 | } else if (output) { | |
1898 | error_report("--output must be used with human or json as argument."); | |
c2abccec MK |
1899 | return 1; |
1900 | } | |
c054b3fd | 1901 | |
9699bf0d SH |
1902 | list = collect_image_info_list(filename, fmt, chain); |
1903 | if (!list) { | |
c2abccec | 1904 | return 1; |
faea38e7 | 1905 | } |
c054b3fd | 1906 | |
c054b3fd BC |
1907 | switch (output_format) { |
1908 | case OFORMAT_HUMAN: | |
9699bf0d | 1909 | dump_human_image_info_list(list); |
c054b3fd BC |
1910 | break; |
1911 | case OFORMAT_JSON: | |
9699bf0d SH |
1912 | if (chain) { |
1913 | dump_json_image_info_list(list); | |
1914 | } else { | |
1915 | dump_json_image_info(list->value); | |
1916 | } | |
c054b3fd | 1917 | break; |
faea38e7 | 1918 | } |
c054b3fd | 1919 | |
9699bf0d | 1920 | qapi_free_ImageInfoList(list); |
ea2384d3 FB |
1921 | return 0; |
1922 | } | |
1923 | ||
4c93a13b PB |
1924 | |
1925 | typedef struct MapEntry { | |
1926 | int flags; | |
1927 | int depth; | |
1928 | int64_t start; | |
1929 | int64_t length; | |
1930 | int64_t offset; | |
1931 | BlockDriverState *bs; | |
1932 | } MapEntry; | |
1933 | ||
1934 | static void dump_map_entry(OutputFormat output_format, MapEntry *e, | |
1935 | MapEntry *next) | |
1936 | { | |
1937 | switch (output_format) { | |
1938 | case OFORMAT_HUMAN: | |
1939 | if ((e->flags & BDRV_BLOCK_DATA) && | |
1940 | !(e->flags & BDRV_BLOCK_OFFSET_VALID)) { | |
1941 | error_report("File contains external, encrypted or compressed clusters."); | |
1942 | exit(1); | |
1943 | } | |
1944 | if ((e->flags & (BDRV_BLOCK_DATA|BDRV_BLOCK_ZERO)) == BDRV_BLOCK_DATA) { | |
1945 | printf("%#-16"PRIx64"%#-16"PRIx64"%#-16"PRIx64"%s\n", | |
1946 | e->start, e->length, e->offset, e->bs->filename); | |
1947 | } | |
1948 | /* This format ignores the distinction between 0, ZERO and ZERO|DATA. | |
1949 | * Modify the flags here to allow more coalescing. | |
1950 | */ | |
1951 | if (next && | |
1952 | (next->flags & (BDRV_BLOCK_DATA|BDRV_BLOCK_ZERO)) != BDRV_BLOCK_DATA) { | |
1953 | next->flags &= ~BDRV_BLOCK_DATA; | |
1954 | next->flags |= BDRV_BLOCK_ZERO; | |
1955 | } | |
1956 | break; | |
1957 | case OFORMAT_JSON: | |
1958 | printf("%s{ \"start\": %"PRId64", \"length\": %"PRId64", \"depth\": %d," | |
1959 | " \"zero\": %s, \"data\": %s", | |
1960 | (e->start == 0 ? "[" : ",\n"), | |
1961 | e->start, e->length, e->depth, | |
1962 | (e->flags & BDRV_BLOCK_ZERO) ? "true" : "false", | |
1963 | (e->flags & BDRV_BLOCK_DATA) ? "true" : "false"); | |
1964 | if (e->flags & BDRV_BLOCK_OFFSET_VALID) { | |
c745bfb4 | 1965 | printf(", \"offset\": %"PRId64"", e->offset); |
4c93a13b PB |
1966 | } |
1967 | putchar('}'); | |
1968 | ||
1969 | if (!next) { | |
1970 | printf("]\n"); | |
1971 | } | |
1972 | break; | |
1973 | } | |
1974 | } | |
1975 | ||
1976 | static int get_block_status(BlockDriverState *bs, int64_t sector_num, | |
1977 | int nb_sectors, MapEntry *e) | |
1978 | { | |
1979 | int64_t ret; | |
1980 | int depth; | |
1981 | ||
1982 | /* As an optimization, we could cache the current range of unallocated | |
1983 | * clusters in each file of the chain, and avoid querying the same | |
1984 | * range repeatedly. | |
1985 | */ | |
1986 | ||
1987 | depth = 0; | |
1988 | for (;;) { | |
1989 | ret = bdrv_get_block_status(bs, sector_num, nb_sectors, &nb_sectors); | |
1990 | if (ret < 0) { | |
1991 | return ret; | |
1992 | } | |
1993 | assert(nb_sectors); | |
1994 | if (ret & (BDRV_BLOCK_ZERO|BDRV_BLOCK_DATA)) { | |
1995 | break; | |
1996 | } | |
1997 | bs = bs->backing_hd; | |
1998 | if (bs == NULL) { | |
1999 | ret = 0; | |
2000 | break; | |
2001 | } | |
2002 | ||
2003 | depth++; | |
2004 | } | |
2005 | ||
2006 | e->start = sector_num * BDRV_SECTOR_SIZE; | |
2007 | e->length = nb_sectors * BDRV_SECTOR_SIZE; | |
2008 | e->flags = ret & ~BDRV_BLOCK_OFFSET_MASK; | |
2009 | e->offset = ret & BDRV_BLOCK_OFFSET_MASK; | |
2010 | e->depth = depth; | |
2011 | e->bs = bs; | |
2012 | return 0; | |
2013 | } | |
2014 | ||
2015 | static int img_map(int argc, char **argv) | |
2016 | { | |
2017 | int c; | |
2018 | OutputFormat output_format = OFORMAT_HUMAN; | |
2019 | BlockDriverState *bs; | |
2020 | const char *filename, *fmt, *output; | |
2021 | int64_t length; | |
2022 | MapEntry curr = { .length = 0 }, next; | |
2023 | int ret = 0; | |
2024 | ||
2025 | fmt = NULL; | |
2026 | output = NULL; | |
2027 | for (;;) { | |
2028 | int option_index = 0; | |
2029 | static const struct option long_options[] = { | |
2030 | {"help", no_argument, 0, 'h'}, | |
2031 | {"format", required_argument, 0, 'f'}, | |
2032 | {"output", required_argument, 0, OPTION_OUTPUT}, | |
2033 | {0, 0, 0, 0} | |
2034 | }; | |
2035 | c = getopt_long(argc, argv, "f:h", | |
2036 | long_options, &option_index); | |
2037 | if (c == -1) { | |
2038 | break; | |
2039 | } | |
2040 | switch (c) { | |
2041 | case '?': | |
2042 | case 'h': | |
2043 | help(); | |
2044 | break; | |
2045 | case 'f': | |
2046 | fmt = optarg; | |
2047 | break; | |
2048 | case OPTION_OUTPUT: | |
2049 | output = optarg; | |
2050 | break; | |
2051 | } | |
2052 | } | |
2053 | if (optind >= argc) { | |
2054 | help(); | |
2055 | } | |
2056 | filename = argv[optind++]; | |
2057 | ||
2058 | if (output && !strcmp(output, "json")) { | |
2059 | output_format = OFORMAT_JSON; | |
2060 | } else if (output && !strcmp(output, "human")) { | |
2061 | output_format = OFORMAT_HUMAN; | |
2062 | } else if (output) { | |
2063 | error_report("--output must be used with human or json as argument."); | |
2064 | return 1; | |
2065 | } | |
2066 | ||
9ffe3332 | 2067 | bs = bdrv_new_open("image", filename, fmt, BDRV_O_FLAGS, true, false); |
4c93a13b PB |
2068 | if (!bs) { |
2069 | return 1; | |
2070 | } | |
2071 | ||
2072 | if (output_format == OFORMAT_HUMAN) { | |
2073 | printf("%-16s%-16s%-16s%s\n", "Offset", "Length", "Mapped to", "File"); | |
2074 | } | |
2075 | ||
2076 | length = bdrv_getlength(bs); | |
2077 | while (curr.start + curr.length < length) { | |
2078 | int64_t nsectors_left; | |
2079 | int64_t sector_num; | |
2080 | int n; | |
2081 | ||
2082 | sector_num = (curr.start + curr.length) >> BDRV_SECTOR_BITS; | |
2083 | ||
2084 | /* Probe up to 1 GiB at a time. */ | |
2085 | nsectors_left = DIV_ROUND_UP(length, BDRV_SECTOR_SIZE) - sector_num; | |
2086 | n = MIN(1 << (30 - BDRV_SECTOR_BITS), nsectors_left); | |
2087 | ret = get_block_status(bs, sector_num, n, &next); | |
2088 | ||
2089 | if (ret < 0) { | |
2090 | error_report("Could not read file metadata: %s", strerror(-ret)); | |
2091 | goto out; | |
2092 | } | |
2093 | ||
2094 | if (curr.length != 0 && curr.flags == next.flags && | |
2095 | curr.depth == next.depth && | |
2096 | ((curr.flags & BDRV_BLOCK_OFFSET_VALID) == 0 || | |
2097 | curr.offset + curr.length == next.offset)) { | |
2098 | curr.length += next.length; | |
2099 | continue; | |
2100 | } | |
2101 | ||
2102 | if (curr.length > 0) { | |
2103 | dump_map_entry(output_format, &curr, &next); | |
2104 | } | |
2105 | curr = next; | |
2106 | } | |
2107 | ||
2108 | dump_map_entry(output_format, &curr, NULL); | |
2109 | ||
2110 | out: | |
2111 | bdrv_unref(bs); | |
2112 | return ret < 0; | |
2113 | } | |
2114 | ||
f7b4a940 AL |
2115 | #define SNAPSHOT_LIST 1 |
2116 | #define SNAPSHOT_CREATE 2 | |
2117 | #define SNAPSHOT_APPLY 3 | |
2118 | #define SNAPSHOT_DELETE 4 | |
2119 | ||
153859be | 2120 | static int img_snapshot(int argc, char **argv) |
f7b4a940 AL |
2121 | { |
2122 | BlockDriverState *bs; | |
2123 | QEMUSnapshotInfo sn; | |
2124 | char *filename, *snapshot_name = NULL; | |
c2abccec | 2125 | int c, ret = 0, bdrv_oflags; |
f7b4a940 AL |
2126 | int action = 0; |
2127 | qemu_timeval tv; | |
f382d43a | 2128 | bool quiet = false; |
a89d89d3 | 2129 | Error *err = NULL; |
f7b4a940 | 2130 | |
710da702 | 2131 | bdrv_oflags = BDRV_O_FLAGS | BDRV_O_RDWR; |
f7b4a940 AL |
2132 | /* Parse commandline parameters */ |
2133 | for(;;) { | |
f382d43a | 2134 | c = getopt(argc, argv, "la:c:d:hq"); |
b8fb60da | 2135 | if (c == -1) { |
f7b4a940 | 2136 | break; |
b8fb60da | 2137 | } |
f7b4a940 | 2138 | switch(c) { |
ef87394c | 2139 | case '?': |
f7b4a940 AL |
2140 | case 'h': |
2141 | help(); | |
153859be | 2142 | return 0; |
f7b4a940 AL |
2143 | case 'l': |
2144 | if (action) { | |
2145 | help(); | |
153859be | 2146 | return 0; |
f7b4a940 AL |
2147 | } |
2148 | action = SNAPSHOT_LIST; | |
f5edb014 | 2149 | bdrv_oflags &= ~BDRV_O_RDWR; /* no need for RW */ |
f7b4a940 AL |
2150 | break; |
2151 | case 'a': | |
2152 | if (action) { | |
2153 | help(); | |
153859be | 2154 | return 0; |
f7b4a940 AL |
2155 | } |
2156 | action = SNAPSHOT_APPLY; | |
2157 | snapshot_name = optarg; | |
2158 | break; | |
2159 | case 'c': | |
2160 | if (action) { | |
2161 | help(); | |
153859be | 2162 | return 0; |
f7b4a940 AL |
2163 | } |
2164 | action = SNAPSHOT_CREATE; | |
2165 | snapshot_name = optarg; | |
2166 | break; | |
2167 | case 'd': | |
2168 | if (action) { | |
2169 | help(); | |
153859be | 2170 | return 0; |
f7b4a940 AL |
2171 | } |
2172 | action = SNAPSHOT_DELETE; | |
2173 | snapshot_name = optarg; | |
2174 | break; | |
f382d43a MR |
2175 | case 'q': |
2176 | quiet = true; | |
2177 | break; | |
f7b4a940 AL |
2178 | } |
2179 | } | |
2180 | ||
fc11eb26 | 2181 | if (optind != argc - 1) { |
f7b4a940 | 2182 | help(); |
b8fb60da | 2183 | } |
f7b4a940 AL |
2184 | filename = argv[optind++]; |
2185 | ||
2186 | /* Open the image */ | |
9ffe3332 | 2187 | bs = bdrv_new_open("image", filename, NULL, bdrv_oflags, true, quiet); |
c2abccec MK |
2188 | if (!bs) { |
2189 | return 1; | |
2190 | } | |
f7b4a940 AL |
2191 | |
2192 | /* Perform the requested action */ | |
2193 | switch(action) { | |
2194 | case SNAPSHOT_LIST: | |
2195 | dump_snapshots(bs); | |
2196 | break; | |
2197 | ||
2198 | case SNAPSHOT_CREATE: | |
2199 | memset(&sn, 0, sizeof(sn)); | |
2200 | pstrcpy(sn.name, sizeof(sn.name), snapshot_name); | |
2201 | ||
2202 | qemu_gettimeofday(&tv); | |
2203 | sn.date_sec = tv.tv_sec; | |
2204 | sn.date_nsec = tv.tv_usec * 1000; | |
2205 | ||
2206 | ret = bdrv_snapshot_create(bs, &sn); | |
b8fb60da | 2207 | if (ret) { |
15654a6d | 2208 | error_report("Could not create snapshot '%s': %d (%s)", |
f7b4a940 | 2209 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 2210 | } |
f7b4a940 AL |
2211 | break; |
2212 | ||
2213 | case SNAPSHOT_APPLY: | |
2214 | ret = bdrv_snapshot_goto(bs, snapshot_name); | |
b8fb60da | 2215 | if (ret) { |
15654a6d | 2216 | error_report("Could not apply snapshot '%s': %d (%s)", |
f7b4a940 | 2217 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 2218 | } |
f7b4a940 AL |
2219 | break; |
2220 | ||
2221 | case SNAPSHOT_DELETE: | |
a89d89d3 | 2222 | bdrv_snapshot_delete_by_id_or_name(bs, snapshot_name, &err); |
84d18f06 | 2223 | if (err) { |
a89d89d3 WX |
2224 | error_report("Could not delete snapshot '%s': (%s)", |
2225 | snapshot_name, error_get_pretty(err)); | |
2226 | error_free(err); | |
2227 | ret = 1; | |
b8fb60da | 2228 | } |
f7b4a940 AL |
2229 | break; |
2230 | } | |
2231 | ||
2232 | /* Cleanup */ | |
4f6fd349 | 2233 | bdrv_unref(bs); |
c2abccec MK |
2234 | if (ret) { |
2235 | return 1; | |
2236 | } | |
153859be | 2237 | return 0; |
f7b4a940 AL |
2238 | } |
2239 | ||
3e85c6fd KW |
2240 | static int img_rebase(int argc, char **argv) |
2241 | { | |
c2abccec | 2242 | BlockDriverState *bs, *bs_old_backing = NULL, *bs_new_backing = NULL; |
f163d073 | 2243 | BlockDriver *old_backing_drv, *new_backing_drv; |
3e85c6fd | 2244 | char *filename; |
661a0f71 | 2245 | const char *fmt, *cache, *out_basefmt, *out_baseimg; |
3e85c6fd KW |
2246 | int c, flags, ret; |
2247 | int unsafe = 0; | |
6b837bc4 | 2248 | int progress = 0; |
f382d43a | 2249 | bool quiet = false; |
34b5d2c6 | 2250 | Error *local_err = NULL; |
3e85c6fd KW |
2251 | |
2252 | /* Parse commandline parameters */ | |
e53dbee0 | 2253 | fmt = NULL; |
661a0f71 | 2254 | cache = BDRV_DEFAULT_CACHE; |
3e85c6fd KW |
2255 | out_baseimg = NULL; |
2256 | out_basefmt = NULL; | |
3e85c6fd | 2257 | for(;;) { |
f382d43a | 2258 | c = getopt(argc, argv, "uhf:F:b:pt:q"); |
b8fb60da | 2259 | if (c == -1) { |
3e85c6fd | 2260 | break; |
b8fb60da | 2261 | } |
3e85c6fd | 2262 | switch(c) { |
ef87394c | 2263 | case '?': |
3e85c6fd KW |
2264 | case 'h': |
2265 | help(); | |
2266 | return 0; | |
e53dbee0 KW |
2267 | case 'f': |
2268 | fmt = optarg; | |
2269 | break; | |
3e85c6fd KW |
2270 | case 'F': |
2271 | out_basefmt = optarg; | |
2272 | break; | |
2273 | case 'b': | |
2274 | out_baseimg = optarg; | |
2275 | break; | |
2276 | case 'u': | |
2277 | unsafe = 1; | |
2278 | break; | |
6b837bc4 JS |
2279 | case 'p': |
2280 | progress = 1; | |
2281 | break; | |
661a0f71 FS |
2282 | case 't': |
2283 | cache = optarg; | |
2284 | break; | |
f382d43a MR |
2285 | case 'q': |
2286 | quiet = true; | |
2287 | break; | |
3e85c6fd KW |
2288 | } |
2289 | } | |
2290 | ||
f382d43a MR |
2291 | if (quiet) { |
2292 | progress = 0; | |
2293 | } | |
2294 | ||
fc11eb26 | 2295 | if ((optind != argc - 1) || (!unsafe && !out_baseimg)) { |
3e85c6fd | 2296 | help(); |
b8fb60da | 2297 | } |
3e85c6fd KW |
2298 | filename = argv[optind++]; |
2299 | ||
6b837bc4 JS |
2300 | qemu_progress_init(progress, 2.0); |
2301 | qemu_progress_print(0, 100); | |
2302 | ||
661a0f71 | 2303 | flags = BDRV_O_RDWR | (unsafe ? BDRV_O_NO_BACKING : 0); |
c3993cdc | 2304 | ret = bdrv_parse_cache_flags(cache, &flags); |
661a0f71 FS |
2305 | if (ret < 0) { |
2306 | error_report("Invalid cache option: %s", cache); | |
2307 | return -1; | |
2308 | } | |
2309 | ||
3e85c6fd KW |
2310 | /* |
2311 | * Open the images. | |
2312 | * | |
2313 | * Ignore the old backing file for unsafe rebase in case we want to correct | |
2314 | * the reference to a renamed or moved backing file. | |
2315 | */ | |
9ffe3332 | 2316 | bs = bdrv_new_open("image", filename, fmt, flags, true, quiet); |
c2abccec MK |
2317 | if (!bs) { |
2318 | return 1; | |
2319 | } | |
3e85c6fd KW |
2320 | |
2321 | /* Find the right drivers for the backing files */ | |
2322 | old_backing_drv = NULL; | |
2323 | new_backing_drv = NULL; | |
2324 | ||
2325 | if (!unsafe && bs->backing_format[0] != '\0') { | |
2326 | old_backing_drv = bdrv_find_format(bs->backing_format); | |
2327 | if (old_backing_drv == NULL) { | |
15654a6d | 2328 | error_report("Invalid format name: '%s'", bs->backing_format); |
c2abccec MK |
2329 | ret = -1; |
2330 | goto out; | |
3e85c6fd KW |
2331 | } |
2332 | } | |
2333 | ||
2334 | if (out_basefmt != NULL) { | |
2335 | new_backing_drv = bdrv_find_format(out_basefmt); | |
2336 | if (new_backing_drv == NULL) { | |
15654a6d | 2337 | error_report("Invalid format name: '%s'", out_basefmt); |
c2abccec MK |
2338 | ret = -1; |
2339 | goto out; | |
3e85c6fd KW |
2340 | } |
2341 | } | |
2342 | ||
2343 | /* For safe rebasing we need to compare old and new backing file */ | |
2344 | if (unsafe) { | |
2345 | /* Make the compiler happy */ | |
2346 | bs_old_backing = NULL; | |
2347 | bs_new_backing = NULL; | |
2348 | } else { | |
2349 | char backing_name[1024]; | |
2350 | ||
98522f63 | 2351 | bs_old_backing = bdrv_new("old_backing", &error_abort); |
3e85c6fd | 2352 | bdrv_get_backing_filename(bs, backing_name, sizeof(backing_name)); |
ddf5636d | 2353 | ret = bdrv_open(&bs_old_backing, backing_name, NULL, NULL, BDRV_O_FLAGS, |
34b5d2c6 | 2354 | old_backing_drv, &local_err); |
c2abccec | 2355 | if (ret) { |
34b5d2c6 HR |
2356 | error_report("Could not open old backing file '%s': %s", |
2357 | backing_name, error_get_pretty(local_err)); | |
2358 | error_free(local_err); | |
c2abccec | 2359 | goto out; |
3e85c6fd | 2360 | } |
a616673d | 2361 | if (out_baseimg[0]) { |
98522f63 | 2362 | bs_new_backing = bdrv_new("new_backing", &error_abort); |
ddf5636d HR |
2363 | ret = bdrv_open(&bs_new_backing, out_baseimg, NULL, NULL, |
2364 | BDRV_O_FLAGS, new_backing_drv, &local_err); | |
a616673d | 2365 | if (ret) { |
34b5d2c6 HR |
2366 | error_report("Could not open new backing file '%s': %s", |
2367 | out_baseimg, error_get_pretty(local_err)); | |
2368 | error_free(local_err); | |
a616673d AB |
2369 | goto out; |
2370 | } | |
3e85c6fd KW |
2371 | } |
2372 | } | |
2373 | ||
2374 | /* | |
2375 | * Check each unallocated cluster in the COW file. If it is unallocated, | |
2376 | * accesses go to the backing file. We must therefore compare this cluster | |
2377 | * in the old and new backing file, and if they differ we need to copy it | |
2378 | * from the old backing file into the COW file. | |
2379 | * | |
2380 | * If qemu-img crashes during this step, no harm is done. The content of | |
2381 | * the image is the same as the original one at any time. | |
2382 | */ | |
2383 | if (!unsafe) { | |
2384 | uint64_t num_sectors; | |
87a1b3e3 | 2385 | uint64_t old_backing_num_sectors; |
a616673d | 2386 | uint64_t new_backing_num_sectors = 0; |
3e85c6fd | 2387 | uint64_t sector; |
cc60e327 | 2388 | int n; |
d6771bfa T |
2389 | uint8_t * buf_old; |
2390 | uint8_t * buf_new; | |
1f710495 | 2391 | float local_progress = 0; |
d6771bfa | 2392 | |
bb1c0597 KW |
2393 | buf_old = qemu_blockalign(bs, IO_BUF_SIZE); |
2394 | buf_new = qemu_blockalign(bs, IO_BUF_SIZE); | |
3e85c6fd KW |
2395 | |
2396 | bdrv_get_geometry(bs, &num_sectors); | |
87a1b3e3 | 2397 | bdrv_get_geometry(bs_old_backing, &old_backing_num_sectors); |
a616673d AB |
2398 | if (bs_new_backing) { |
2399 | bdrv_get_geometry(bs_new_backing, &new_backing_num_sectors); | |
2400 | } | |
3e85c6fd | 2401 | |
1f710495 KW |
2402 | if (num_sectors != 0) { |
2403 | local_progress = (float)100 / | |
2404 | (num_sectors / MIN(num_sectors, IO_BUF_SIZE / 512)); | |
2405 | } | |
2406 | ||
3e85c6fd KW |
2407 | for (sector = 0; sector < num_sectors; sector += n) { |
2408 | ||
2409 | /* How many sectors can we handle with the next read? */ | |
2410 | if (sector + (IO_BUF_SIZE / 512) <= num_sectors) { | |
2411 | n = (IO_BUF_SIZE / 512); | |
2412 | } else { | |
2413 | n = num_sectors - sector; | |
2414 | } | |
2415 | ||
2416 | /* If the cluster is allocated, we don't need to take action */ | |
cc60e327 | 2417 | ret = bdrv_is_allocated(bs, sector, n, &n); |
d663640c PB |
2418 | if (ret < 0) { |
2419 | error_report("error while reading image metadata: %s", | |
2420 | strerror(-ret)); | |
2421 | goto out; | |
2422 | } | |
cc60e327 | 2423 | if (ret) { |
3e85c6fd KW |
2424 | continue; |
2425 | } | |
2426 | ||
87a1b3e3 KW |
2427 | /* |
2428 | * Read old and new backing file and take into consideration that | |
2429 | * backing files may be smaller than the COW image. | |
2430 | */ | |
2431 | if (sector >= old_backing_num_sectors) { | |
2432 | memset(buf_old, 0, n * BDRV_SECTOR_SIZE); | |
2433 | } else { | |
2434 | if (sector + n > old_backing_num_sectors) { | |
2435 | n = old_backing_num_sectors - sector; | |
2436 | } | |
2437 | ||
2438 | ret = bdrv_read(bs_old_backing, sector, buf_old, n); | |
2439 | if (ret < 0) { | |
2440 | error_report("error while reading from old backing file"); | |
2441 | goto out; | |
2442 | } | |
3e85c6fd | 2443 | } |
87a1b3e3 | 2444 | |
a616673d | 2445 | if (sector >= new_backing_num_sectors || !bs_new_backing) { |
87a1b3e3 KW |
2446 | memset(buf_new, 0, n * BDRV_SECTOR_SIZE); |
2447 | } else { | |
2448 | if (sector + n > new_backing_num_sectors) { | |
2449 | n = new_backing_num_sectors - sector; | |
2450 | } | |
2451 | ||
2452 | ret = bdrv_read(bs_new_backing, sector, buf_new, n); | |
2453 | if (ret < 0) { | |
2454 | error_report("error while reading from new backing file"); | |
2455 | goto out; | |
2456 | } | |
3e85c6fd KW |
2457 | } |
2458 | ||
2459 | /* If they differ, we need to write to the COW file */ | |
2460 | uint64_t written = 0; | |
2461 | ||
2462 | while (written < n) { | |
2463 | int pnum; | |
2464 | ||
2465 | if (compare_sectors(buf_old + written * 512, | |
60b1bd4f | 2466 | buf_new + written * 512, n - written, &pnum)) |
3e85c6fd KW |
2467 | { |
2468 | ret = bdrv_write(bs, sector + written, | |
2469 | buf_old + written * 512, pnum); | |
2470 | if (ret < 0) { | |
15654a6d | 2471 | error_report("Error while writing to COW image: %s", |
3e85c6fd | 2472 | strerror(-ret)); |
c2abccec | 2473 | goto out; |
3e85c6fd KW |
2474 | } |
2475 | } | |
2476 | ||
2477 | written += pnum; | |
2478 | } | |
6b837bc4 | 2479 | qemu_progress_print(local_progress, 100); |
3e85c6fd | 2480 | } |
d6771bfa | 2481 | |
bb1c0597 KW |
2482 | qemu_vfree(buf_old); |
2483 | qemu_vfree(buf_new); | |
3e85c6fd KW |
2484 | } |
2485 | ||
2486 | /* | |
2487 | * Change the backing file. All clusters that are different from the old | |
2488 | * backing file are overwritten in the COW file now, so the visible content | |
2489 | * doesn't change when we switch the backing file. | |
2490 | */ | |
a616673d AB |
2491 | if (out_baseimg && *out_baseimg) { |
2492 | ret = bdrv_change_backing_file(bs, out_baseimg, out_basefmt); | |
2493 | } else { | |
2494 | ret = bdrv_change_backing_file(bs, NULL, NULL); | |
2495 | } | |
2496 | ||
3e85c6fd | 2497 | if (ret == -ENOSPC) { |
15654a6d JS |
2498 | error_report("Could not change the backing file to '%s': No " |
2499 | "space left in the file header", out_baseimg); | |
3e85c6fd | 2500 | } else if (ret < 0) { |
15654a6d | 2501 | error_report("Could not change the backing file to '%s': %s", |
3e85c6fd KW |
2502 | out_baseimg, strerror(-ret)); |
2503 | } | |
2504 | ||
6b837bc4 | 2505 | qemu_progress_print(100, 0); |
3e85c6fd KW |
2506 | /* |
2507 | * TODO At this point it is possible to check if any clusters that are | |
2508 | * allocated in the COW file are the same in the backing file. If so, they | |
2509 | * could be dropped from the COW file. Don't do this before switching the | |
2510 | * backing file, in case of a crash this would lead to corruption. | |
2511 | */ | |
c2abccec | 2512 | out: |
6b837bc4 | 2513 | qemu_progress_end(); |
3e85c6fd KW |
2514 | /* Cleanup */ |
2515 | if (!unsafe) { | |
eb863add | 2516 | if (bs_old_backing != NULL) { |
4f6fd349 | 2517 | bdrv_unref(bs_old_backing); |
eb863add KW |
2518 | } |
2519 | if (bs_new_backing != NULL) { | |
4f6fd349 | 2520 | bdrv_unref(bs_new_backing); |
eb863add | 2521 | } |
3e85c6fd KW |
2522 | } |
2523 | ||
4f6fd349 | 2524 | bdrv_unref(bs); |
c2abccec MK |
2525 | if (ret) { |
2526 | return 1; | |
2527 | } | |
3e85c6fd KW |
2528 | return 0; |
2529 | } | |
2530 | ||
ae6b0ed6 SH |
2531 | static int img_resize(int argc, char **argv) |
2532 | { | |
2533 | int c, ret, relative; | |
2534 | const char *filename, *fmt, *size; | |
2535 | int64_t n, total_size; | |
f382d43a | 2536 | bool quiet = false; |
2a81998a | 2537 | BlockDriverState *bs = NULL; |
20caf0f7 DXW |
2538 | QemuOpts *param; |
2539 | static QemuOptsList resize_options = { | |
2540 | .name = "resize_options", | |
2541 | .head = QTAILQ_HEAD_INITIALIZER(resize_options.head), | |
2542 | .desc = { | |
2543 | { | |
2544 | .name = BLOCK_OPT_SIZE, | |
2545 | .type = QEMU_OPT_SIZE, | |
2546 | .help = "Virtual disk size" | |
2547 | }, { | |
2548 | /* end of list */ | |
2549 | } | |
ae6b0ed6 | 2550 | }, |
ae6b0ed6 SH |
2551 | }; |
2552 | ||
e80fec7f KW |
2553 | /* Remove size from argv manually so that negative numbers are not treated |
2554 | * as options by getopt. */ | |
2555 | if (argc < 3) { | |
2556 | help(); | |
2557 | return 1; | |
2558 | } | |
2559 | ||
2560 | size = argv[--argc]; | |
2561 | ||
2562 | /* Parse getopt arguments */ | |
ae6b0ed6 SH |
2563 | fmt = NULL; |
2564 | for(;;) { | |
f382d43a | 2565 | c = getopt(argc, argv, "f:hq"); |
ae6b0ed6 SH |
2566 | if (c == -1) { |
2567 | break; | |
2568 | } | |
2569 | switch(c) { | |
ef87394c | 2570 | case '?': |
ae6b0ed6 SH |
2571 | case 'h': |
2572 | help(); | |
2573 | break; | |
2574 | case 'f': | |
2575 | fmt = optarg; | |
2576 | break; | |
f382d43a MR |
2577 | case 'q': |
2578 | quiet = true; | |
2579 | break; | |
ae6b0ed6 SH |
2580 | } |
2581 | } | |
fc11eb26 | 2582 | if (optind != argc - 1) { |
ae6b0ed6 SH |
2583 | help(); |
2584 | } | |
2585 | filename = argv[optind++]; | |
ae6b0ed6 SH |
2586 | |
2587 | /* Choose grow, shrink, or absolute resize mode */ | |
2588 | switch (size[0]) { | |
2589 | case '+': | |
2590 | relative = 1; | |
2591 | size++; | |
2592 | break; | |
2593 | case '-': | |
2594 | relative = -1; | |
2595 | size++; | |
2596 | break; | |
2597 | default: | |
2598 | relative = 0; | |
2599 | break; | |
2600 | } | |
2601 | ||
2602 | /* Parse size */ | |
87ea75d5 | 2603 | param = qemu_opts_create(&resize_options, NULL, 0, &error_abort); |
20caf0f7 | 2604 | if (qemu_opt_set(param, BLOCK_OPT_SIZE, size)) { |
ae6b0ed6 | 2605 | /* Error message already printed when size parsing fails */ |
2a81998a | 2606 | ret = -1; |
20caf0f7 | 2607 | qemu_opts_del(param); |
2a81998a | 2608 | goto out; |
ae6b0ed6 | 2609 | } |
20caf0f7 DXW |
2610 | n = qemu_opt_get_size(param, BLOCK_OPT_SIZE, 0); |
2611 | qemu_opts_del(param); | |
ae6b0ed6 | 2612 | |
9ffe3332 KW |
2613 | bs = bdrv_new_open("image", filename, fmt, BDRV_O_FLAGS | BDRV_O_RDWR, |
2614 | true, quiet); | |
c2abccec | 2615 | if (!bs) { |
2a81998a JS |
2616 | ret = -1; |
2617 | goto out; | |
c2abccec | 2618 | } |
ae6b0ed6 SH |
2619 | |
2620 | if (relative) { | |
2621 | total_size = bdrv_getlength(bs) + n * relative; | |
2622 | } else { | |
2623 | total_size = n; | |
2624 | } | |
2625 | if (total_size <= 0) { | |
15654a6d | 2626 | error_report("New image size must be positive"); |
c2abccec MK |
2627 | ret = -1; |
2628 | goto out; | |
ae6b0ed6 SH |
2629 | } |
2630 | ||
2631 | ret = bdrv_truncate(bs, total_size); | |
2632 | switch (ret) { | |
2633 | case 0: | |
f382d43a | 2634 | qprintf(quiet, "Image resized.\n"); |
ae6b0ed6 SH |
2635 | break; |
2636 | case -ENOTSUP: | |
259b2173 | 2637 | error_report("This image does not support resize"); |
ae6b0ed6 SH |
2638 | break; |
2639 | case -EACCES: | |
15654a6d | 2640 | error_report("Image is read-only"); |
ae6b0ed6 SH |
2641 | break; |
2642 | default: | |
15654a6d | 2643 | error_report("Error resizing image (%d)", -ret); |
ae6b0ed6 SH |
2644 | break; |
2645 | } | |
c2abccec | 2646 | out: |
2a81998a | 2647 | if (bs) { |
4f6fd349 | 2648 | bdrv_unref(bs); |
2a81998a | 2649 | } |
c2abccec MK |
2650 | if (ret) { |
2651 | return 1; | |
2652 | } | |
ae6b0ed6 SH |
2653 | return 0; |
2654 | } | |
2655 | ||
6f176b48 HR |
2656 | static int img_amend(int argc, char **argv) |
2657 | { | |
2658 | int c, ret = 0; | |
2659 | char *options = NULL; | |
2660 | QEMUOptionParameter *create_options = NULL, *options_param = NULL; | |
2661 | const char *fmt = NULL, *filename; | |
2662 | bool quiet = false; | |
2663 | BlockDriverState *bs = NULL; | |
2664 | ||
2665 | for (;;) { | |
2666 | c = getopt(argc, argv, "hqf:o:"); | |
2667 | if (c == -1) { | |
2668 | break; | |
2669 | } | |
2670 | ||
2671 | switch (c) { | |
2672 | case 'h': | |
2673 | case '?': | |
2674 | help(); | |
2675 | break; | |
2676 | case 'o': | |
626f84f3 KW |
2677 | if (!is_valid_option_list(optarg)) { |
2678 | error_report("Invalid option list: %s", optarg); | |
2679 | ret = -1; | |
2680 | goto out; | |
2681 | } | |
2682 | if (!options) { | |
2683 | options = g_strdup(optarg); | |
2684 | } else { | |
2685 | char *old_options = options; | |
2686 | options = g_strdup_printf("%s,%s", options, optarg); | |
2687 | g_free(old_options); | |
2688 | } | |
6f176b48 HR |
2689 | break; |
2690 | case 'f': | |
2691 | fmt = optarg; | |
2692 | break; | |
2693 | case 'q': | |
2694 | quiet = true; | |
2695 | break; | |
2696 | } | |
2697 | } | |
2698 | ||
a283cb6e | 2699 | if (!options) { |
6f176b48 HR |
2700 | help(); |
2701 | } | |
2702 | ||
a283cb6e KW |
2703 | filename = (optind == argc - 1) ? argv[argc - 1] : NULL; |
2704 | if (fmt && has_help_option(options)) { | |
2705 | /* If a format is explicitly specified (and possibly no filename is | |
2706 | * given), print option help here */ | |
2707 | ret = print_block_option_help(filename, fmt); | |
2708 | goto out; | |
6f176b48 HR |
2709 | } |
2710 | ||
a283cb6e KW |
2711 | if (optind != argc - 1) { |
2712 | help(); | |
2713 | } | |
6f176b48 | 2714 | |
9ffe3332 KW |
2715 | bs = bdrv_new_open("image", filename, fmt, |
2716 | BDRV_O_FLAGS | BDRV_O_RDWR, true, quiet); | |
6f176b48 HR |
2717 | if (!bs) { |
2718 | error_report("Could not open image '%s'", filename); | |
2719 | ret = -1; | |
2720 | goto out; | |
2721 | } | |
2722 | ||
2723 | fmt = bs->drv->format_name; | |
2724 | ||
626f84f3 | 2725 | if (has_help_option(options)) { |
a283cb6e | 2726 | /* If the format was auto-detected, print option help here */ |
6f176b48 HR |
2727 | ret = print_block_option_help(filename, fmt); |
2728 | goto out; | |
2729 | } | |
2730 | ||
2731 | create_options = append_option_parameters(create_options, | |
2732 | bs->drv->create_options); | |
2733 | options_param = parse_option_parameters(options, create_options, | |
2734 | options_param); | |
2735 | if (options_param == NULL) { | |
2736 | error_report("Invalid options for file format '%s'", fmt); | |
2737 | ret = -1; | |
2738 | goto out; | |
2739 | } | |
2740 | ||
2741 | ret = bdrv_amend_options(bs, options_param); | |
2742 | if (ret < 0) { | |
2743 | error_report("Error while amending options: %s", strerror(-ret)); | |
2744 | goto out; | |
2745 | } | |
2746 | ||
2747 | out: | |
2748 | if (bs) { | |
2749 | bdrv_unref(bs); | |
2750 | } | |
2751 | free_option_parameters(create_options); | |
2752 | free_option_parameters(options_param); | |
626f84f3 KW |
2753 | g_free(options); |
2754 | ||
6f176b48 HR |
2755 | if (ret) { |
2756 | return 1; | |
2757 | } | |
2758 | return 0; | |
2759 | } | |
2760 | ||
c227f099 | 2761 | static const img_cmd_t img_cmds[] = { |
153859be SB |
2762 | #define DEF(option, callback, arg_string) \ |
2763 | { option, callback }, | |
2764 | #include "qemu-img-cmds.h" | |
2765 | #undef DEF | |
2766 | #undef GEN_DOCS | |
2767 | { NULL, NULL, }, | |
2768 | }; | |
2769 | ||
ea2384d3 FB |
2770 | int main(int argc, char **argv) |
2771 | { | |
c227f099 | 2772 | const img_cmd_t *cmd; |
153859be | 2773 | const char *cmdname; |
ea2384d3 | 2774 | |
526eda14 MK |
2775 | #ifdef CONFIG_POSIX |
2776 | signal(SIGPIPE, SIG_IGN); | |
2777 | #endif | |
2778 | ||
53f76e58 | 2779 | error_set_progname(argv[0]); |
10f5bff6 | 2780 | qemu_init_exec_dir(argv[0]); |
53f76e58 | 2781 | |
2592c59a | 2782 | qemu_init_main_loop(); |
ea2384d3 FB |
2783 | bdrv_init(); |
2784 | if (argc < 2) | |
2785 | help(); | |
153859be | 2786 | cmdname = argv[1]; |
8f9b157e | 2787 | argc--; argv++; |
153859be SB |
2788 | |
2789 | /* find the command */ | |
2790 | for(cmd = img_cmds; cmd->name != NULL; cmd++) { | |
2791 | if (!strcmp(cmdname, cmd->name)) { | |
2792 | return cmd->handler(argc, argv); | |
2793 | } | |
ea2384d3 | 2794 | } |
153859be SB |
2795 | |
2796 | /* not found */ | |
2797 | help(); | |
ea2384d3 FB |
2798 | return 0; |
2799 | } |