]>
Commit | Line | Data |
---|---|---|
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 | ||
ac1307ab FZ |
60 | static void QEMU_NORETURN GCC_FMT_ATTR(1, 2) error_exit(const char *fmt, ...) |
61 | { | |
62 | va_list ap; | |
63 | ||
64 | error_printf("qemu-img: "); | |
65 | ||
66 | va_start(ap, fmt); | |
67 | error_vprintf(fmt, ap); | |
68 | va_end(ap); | |
69 | ||
70 | error_printf("\nTry 'qemu-img --help' for more information\n"); | |
71 | exit(EXIT_FAILURE); | |
72 | } | |
73 | ||
d2c639d6 | 74 | /* Please keep in synch with qemu-img.texi */ |
ac1307ab | 75 | static void QEMU_NORETURN help(void) |
ea2384d3 | 76 | { |
e00291c0 PB |
77 | const char *help_msg = |
78 | "qemu-img version " QEMU_VERSION ", Copyright (c) 2004-2008 Fabrice Bellard\n" | |
3f020d70 | 79 | "usage: qemu-img command [command options]\n" |
80 | "QEMU disk image utility\n" | |
81 | "\n" | |
82 | "Command syntax:\n" | |
153859be SB |
83 | #define DEF(option, callback, arg_string) \ |
84 | " " arg_string "\n" | |
85 | #include "qemu-img-cmds.h" | |
86 | #undef DEF | |
87 | #undef GEN_DOCS | |
3f020d70 | 88 | "\n" |
89 | "Command parameters:\n" | |
90 | " 'filename' is a disk image filename\n" | |
91 | " 'fmt' is the disk image format. It is guessed automatically in most cases\n" | |
661a0f71 | 92 | " 'cache' is the cache mode used to write the output disk image, the valid\n" |
80ccf93b LY |
93 | " options are: 'none', 'writeback' (default, except for convert), 'writethrough',\n" |
94 | " 'directsync' and 'unsafe' (default for convert)\n" | |
3f020d70 | 95 | " 'size' is the disk image size in bytes. Optional suffixes\n" |
5e00984a KW |
96 | " 'k' or 'K' (kilobyte, 1024), 'M' (megabyte, 1024k), 'G' (gigabyte, 1024M),\n" |
97 | " 'T' (terabyte, 1024G), 'P' (petabyte, 1024T) and 'E' (exabyte, 1024P) are\n" | |
98 | " supported. 'b' is ignored.\n" | |
3f020d70 | 99 | " 'output_filename' is the destination disk image filename\n" |
100 | " 'output_fmt' is the destination format\n" | |
101 | " 'options' is a comma separated list of format specific options in a\n" | |
102 | " name=value format. Use -o ? for an overview of the options supported by the\n" | |
103 | " used format\n" | |
ef80654d WX |
104 | " 'snapshot_param' is param used for internal snapshot, format\n" |
105 | " is 'snapshot.id=[ID],snapshot.name=[NAME]', or\n" | |
106 | " '[ID_OR_NAME]'\n" | |
107 | " 'snapshot_id_or_name' is deprecated, use 'snapshot_param'\n" | |
108 | " instead\n" | |
3f020d70 | 109 | " '-c' indicates that target image must be compressed (qcow format only)\n" |
110 | " '-u' enables unsafe rebasing. It is assumed that old and new backing file\n" | |
111 | " match exactly. The image doesn't need a working backing file before\n" | |
112 | " rebasing in this case (useful for renaming the backing file)\n" | |
113 | " '-h' with or without a command shows this help and lists the supported formats\n" | |
6b837bc4 | 114 | " '-p' show progress of command (only certain commands)\n" |
f382d43a | 115 | " '-q' use Quiet mode - do not print any output (except errors)\n" |
11b6699a PL |
116 | " '-S' indicates the consecutive number of bytes (defaults to 4k) that must\n" |
117 | " contain only zeros for qemu-img to create a sparse image during\n" | |
118 | " conversion. If the number of bytes is 0, the source will not be scanned for\n" | |
119 | " unallocated or zero sectors, and the destination image will always be\n" | |
120 | " fully allocated\n" | |
c054b3fd | 121 | " '--output' takes the format in which the output must be done (human or json)\n" |
b2e10493 AD |
122 | " '-n' skips the target volume creation (useful if the volume is created\n" |
123 | " prior to running qemu-img)\n" | |
3f020d70 | 124 | "\n" |
4534ff54 KW |
125 | "Parameters to check subcommand:\n" |
126 | " '-r' tries to repair any inconsistencies that are found during the check.\n" | |
127 | " '-r leaks' repairs only cluster leaks, whereas '-r all' fixes all\n" | |
128 | " kinds of errors, with a higher risk of choosing the wrong fix or\n" | |
0546b8c2 | 129 | " hiding corruption that has already occurred.\n" |
4534ff54 | 130 | "\n" |
3f020d70 | 131 | "Parameters to snapshot subcommand:\n" |
132 | " 'snapshot' is the name of the snapshot to create, apply or delete\n" | |
133 | " '-a' applies a snapshot (revert disk to saved state)\n" | |
134 | " '-c' creates a snapshot\n" | |
135 | " '-d' deletes a snapshot\n" | |
d14ed18c MR |
136 | " '-l' lists all snapshots in the given image\n" |
137 | "\n" | |
138 | "Parameters to compare subcommand:\n" | |
139 | " '-f' first image format\n" | |
140 | " '-F' second image format\n" | |
141 | " '-s' run in Strict mode - fail on different image size or sector allocation\n"; | |
e00291c0 PB |
142 | |
143 | printf("%s\nSupported formats:", help_msg); | |
ea2384d3 FB |
144 | bdrv_iterate_format(format_print, NULL); |
145 | printf("\n"); | |
ac1307ab | 146 | exit(EXIT_SUCCESS); |
ea2384d3 FB |
147 | } |
148 | ||
7c30f657 | 149 | static int GCC_FMT_ATTR(2, 3) qprintf(bool quiet, const char *fmt, ...) |
f382d43a MR |
150 | { |
151 | int ret = 0; | |
152 | if (!quiet) { | |
153 | va_list args; | |
154 | va_start(args, fmt); | |
155 | ret = vprintf(fmt, args); | |
156 | va_end(args); | |
157 | } | |
158 | return ret; | |
159 | } | |
160 | ||
ea2384d3 FB |
161 | #if defined(WIN32) |
162 | /* XXX: put correct support for win32 */ | |
163 | static int read_password(char *buf, int buf_size) | |
164 | { | |
165 | int c, i; | |
166 | printf("Password: "); | |
167 | fflush(stdout); | |
168 | i = 0; | |
169 | for(;;) { | |
170 | c = getchar(); | |
171 | if (c == '\n') | |
172 | break; | |
173 | if (i < (buf_size - 1)) | |
174 | buf[i++] = c; | |
175 | } | |
176 | buf[i] = '\0'; | |
177 | return 0; | |
178 | } | |
179 | ||
180 | #else | |
181 | ||
182 | #include <termios.h> | |
183 | ||
184 | static struct termios oldtty; | |
185 | ||
186 | static void term_exit(void) | |
187 | { | |
188 | tcsetattr (0, TCSANOW, &oldtty); | |
189 | } | |
190 | ||
191 | static void term_init(void) | |
192 | { | |
193 | struct termios tty; | |
194 | ||
195 | tcgetattr (0, &tty); | |
196 | oldtty = tty; | |
197 | ||
198 | tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP | |
199 | |INLCR|IGNCR|ICRNL|IXON); | |
200 | tty.c_oflag |= OPOST; | |
201 | tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN); | |
202 | tty.c_cflag &= ~(CSIZE|PARENB); | |
203 | tty.c_cflag |= CS8; | |
204 | tty.c_cc[VMIN] = 1; | |
205 | tty.c_cc[VTIME] = 0; | |
3b46e624 | 206 | |
ea2384d3 FB |
207 | tcsetattr (0, TCSANOW, &tty); |
208 | ||
209 | atexit(term_exit); | |
210 | } | |
211 | ||
3f379ab1 | 212 | static int read_password(char *buf, int buf_size) |
ea2384d3 FB |
213 | { |
214 | uint8_t ch; | |
215 | int i, ret; | |
216 | ||
217 | printf("password: "); | |
218 | fflush(stdout); | |
219 | term_init(); | |
220 | i = 0; | |
221 | for(;;) { | |
222 | ret = read(0, &ch, 1); | |
223 | if (ret == -1) { | |
224 | if (errno == EAGAIN || errno == EINTR) { | |
225 | continue; | |
226 | } else { | |
227 | ret = -1; | |
228 | break; | |
229 | } | |
230 | } else if (ret == 0) { | |
231 | ret = -1; | |
232 | break; | |
233 | } else { | |
234 | if (ch == '\r') { | |
235 | ret = 0; | |
236 | break; | |
237 | } | |
238 | if (i < (buf_size - 1)) | |
239 | buf[i++] = ch; | |
240 | } | |
241 | } | |
242 | term_exit(); | |
243 | buf[i] = '\0'; | |
244 | printf("\n"); | |
245 | return ret; | |
246 | } | |
247 | #endif | |
248 | ||
4ac8aacd JS |
249 | static int print_block_option_help(const char *filename, const char *fmt) |
250 | { | |
251 | BlockDriver *drv, *proto_drv; | |
252 | QEMUOptionParameter *create_options = NULL; | |
253 | ||
254 | /* Find driver and parse its options */ | |
255 | drv = bdrv_find_format(fmt); | |
256 | if (!drv) { | |
15654a6d | 257 | error_report("Unknown file format '%s'", fmt); |
4ac8aacd JS |
258 | return 1; |
259 | } | |
260 | ||
4ac8aacd JS |
261 | create_options = append_option_parameters(create_options, |
262 | drv->create_options); | |
a283cb6e KW |
263 | |
264 | if (filename) { | |
265 | proto_drv = bdrv_find_protocol(filename, true); | |
266 | if (!proto_drv) { | |
267 | error_report("Unknown protocol '%s'", filename); | |
268 | return 1; | |
269 | } | |
270 | create_options = append_option_parameters(create_options, | |
271 | proto_drv->create_options); | |
272 | } | |
273 | ||
4ac8aacd JS |
274 | print_option_help(create_options); |
275 | free_option_parameters(create_options); | |
276 | return 0; | |
277 | } | |
278 | ||
9ffe3332 KW |
279 | static BlockDriverState *bdrv_new_open(const char *id, |
280 | const char *filename, | |
9bc378c1 | 281 | const char *fmt, |
f0536bb8 | 282 | int flags, |
f382d43a MR |
283 | bool require_io, |
284 | bool quiet) | |
75c23805 FB |
285 | { |
286 | BlockDriverState *bs; | |
287 | BlockDriver *drv; | |
288 | char password[256]; | |
34b5d2c6 | 289 | Error *local_err = NULL; |
b9eaf9ec | 290 | int ret; |
75c23805 | 291 | |
9ffe3332 | 292 | bs = bdrv_new(id, &error_abort); |
ad717139 | 293 | |
75c23805 FB |
294 | if (fmt) { |
295 | drv = bdrv_find_format(fmt); | |
c2abccec | 296 | if (!drv) { |
15654a6d | 297 | error_report("Unknown file format '%s'", fmt); |
c2abccec MK |
298 | goto fail; |
299 | } | |
75c23805 FB |
300 | } else { |
301 | drv = NULL; | |
302 | } | |
b9eaf9ec | 303 | |
ddf5636d | 304 | ret = bdrv_open(&bs, filename, NULL, NULL, flags, drv, &local_err); |
b9eaf9ec | 305 | if (ret < 0) { |
34b5d2c6 HR |
306 | error_report("Could not open '%s': %s", filename, |
307 | error_get_pretty(local_err)); | |
308 | error_free(local_err); | |
c2abccec | 309 | goto fail; |
75c23805 | 310 | } |
b9eaf9ec | 311 | |
f0536bb8 | 312 | if (bdrv_is_encrypted(bs) && require_io) { |
f382d43a | 313 | qprintf(quiet, "Disk image '%s' is encrypted.\n", filename); |
c2abccec | 314 | if (read_password(password, sizeof(password)) < 0) { |
15654a6d | 315 | error_report("No password given"); |
c2abccec MK |
316 | goto fail; |
317 | } | |
318 | if (bdrv_set_key(bs, password) < 0) { | |
15654a6d | 319 | error_report("invalid password"); |
c2abccec MK |
320 | goto fail; |
321 | } | |
75c23805 FB |
322 | } |
323 | return bs; | |
c2abccec | 324 | fail: |
f67503e5 | 325 | bdrv_unref(bs); |
c2abccec | 326 | return NULL; |
75c23805 FB |
327 | } |
328 | ||
c2abccec | 329 | static int add_old_style_options(const char *fmt, QEMUOptionParameter *list, |
eec77d9e JS |
330 | const char *base_filename, |
331 | const char *base_fmt) | |
efa84d43 | 332 | { |
efa84d43 KW |
333 | if (base_filename) { |
334 | if (set_option_parameter(list, BLOCK_OPT_BACKING_FILE, base_filename)) { | |
15654a6d JS |
335 | error_report("Backing file not supported for file format '%s'", |
336 | fmt); | |
c2abccec | 337 | return -1; |
efa84d43 KW |
338 | } |
339 | } | |
340 | if (base_fmt) { | |
341 | if (set_option_parameter(list, BLOCK_OPT_BACKING_FMT, base_fmt)) { | |
15654a6d JS |
342 | error_report("Backing file format not supported for file " |
343 | "format '%s'", fmt); | |
c2abccec | 344 | return -1; |
efa84d43 KW |
345 | } |
346 | } | |
c2abccec | 347 | return 0; |
efa84d43 KW |
348 | } |
349 | ||
ea2384d3 FB |
350 | static int img_create(int argc, char **argv) |
351 | { | |
a9300911 | 352 | int c; |
1da7cfbd | 353 | uint64_t img_size = -1; |
ea2384d3 | 354 | const char *fmt = "raw"; |
9230eaf6 | 355 | const char *base_fmt = NULL; |
ea2384d3 FB |
356 | const char *filename; |
357 | const char *base_filename = NULL; | |
9ea2ea71 | 358 | char *options = NULL; |
9b37525a | 359 | Error *local_err = NULL; |
f382d43a | 360 | bool quiet = false; |
3b46e624 | 361 | |
ea2384d3 | 362 | for(;;) { |
f382d43a | 363 | c = getopt(argc, argv, "F:b:f:he6o:q"); |
b8fb60da | 364 | if (c == -1) { |
ea2384d3 | 365 | break; |
b8fb60da | 366 | } |
ea2384d3 | 367 | switch(c) { |
ef87394c | 368 | case '?': |
ea2384d3 FB |
369 | case 'h': |
370 | help(); | |
371 | break; | |
9230eaf6 AL |
372 | case 'F': |
373 | base_fmt = optarg; | |
374 | break; | |
ea2384d3 FB |
375 | case 'b': |
376 | base_filename = optarg; | |
377 | break; | |
378 | case 'f': | |
379 | fmt = optarg; | |
380 | break; | |
381 | case 'e': | |
9d42e15d | 382 | error_report("option -e is deprecated, please use \'-o " |
eec77d9e | 383 | "encryption\' instead!"); |
77386bf6 | 384 | goto fail; |
d8871c5a | 385 | case '6': |
9d42e15d | 386 | error_report("option -6 is deprecated, please use \'-o " |
eec77d9e | 387 | "compat6\' instead!"); |
77386bf6 | 388 | goto fail; |
9ea2ea71 | 389 | case 'o': |
77386bf6 KW |
390 | if (!is_valid_option_list(optarg)) { |
391 | error_report("Invalid option list: %s", optarg); | |
392 | goto fail; | |
393 | } | |
394 | if (!options) { | |
395 | options = g_strdup(optarg); | |
396 | } else { | |
397 | char *old_options = options; | |
398 | options = g_strdup_printf("%s,%s", options, optarg); | |
399 | g_free(old_options); | |
400 | } | |
9ea2ea71 | 401 | break; |
f382d43a MR |
402 | case 'q': |
403 | quiet = true; | |
404 | break; | |
ea2384d3 FB |
405 | } |
406 | } | |
9230eaf6 | 407 | |
b50cbabc | 408 | /* Get the filename */ |
a283cb6e KW |
409 | filename = (optind < argc) ? argv[optind] : NULL; |
410 | if (options && has_help_option(options)) { | |
411 | g_free(options); | |
412 | return print_block_option_help(filename, fmt); | |
413 | } | |
414 | ||
b8fb60da | 415 | if (optind >= argc) { |
ac1307ab | 416 | error_exit("Expecting image file name"); |
b8fb60da | 417 | } |
a283cb6e | 418 | optind++; |
b50cbabc | 419 | |
1da7cfbd JS |
420 | /* Get image size, if specified */ |
421 | if (optind < argc) { | |
70b4f4bb | 422 | int64_t sval; |
e36b3695 MA |
423 | char *end; |
424 | sval = strtosz_suffix(argv[optind++], &end, STRTOSZ_DEFSUFFIX_B); | |
425 | if (sval < 0 || *end) { | |
79443397 LG |
426 | if (sval == -ERANGE) { |
427 | error_report("Image size must be less than 8 EiB!"); | |
428 | } else { | |
429 | error_report("Invalid image size specified! You may use k, M, " | |
5e00984a KW |
430 | "G, T, P or E suffixes for "); |
431 | error_report("kilobytes, megabytes, gigabytes, terabytes, " | |
432 | "petabytes and exabytes."); | |
79443397 | 433 | } |
77386bf6 | 434 | goto fail; |
1da7cfbd JS |
435 | } |
436 | img_size = (uint64_t)sval; | |
437 | } | |
fc11eb26 | 438 | if (optind != argc) { |
ac1307ab | 439 | error_exit("Unexpected argument: %s", argv[optind]); |
fc11eb26 | 440 | } |
1da7cfbd | 441 | |
9b37525a | 442 | bdrv_img_create(filename, fmt, base_filename, base_fmt, |
f382d43a | 443 | options, img_size, BDRV_O_FLAGS, &local_err, quiet); |
84d18f06 | 444 | if (local_err) { |
b70d8c23 | 445 | error_report("%s: %s", filename, error_get_pretty(local_err)); |
9b37525a | 446 | error_free(local_err); |
77386bf6 | 447 | goto fail; |
c2abccec | 448 | } |
a9300911 | 449 | |
77386bf6 | 450 | g_free(options); |
ea2384d3 | 451 | return 0; |
77386bf6 KW |
452 | |
453 | fail: | |
454 | g_free(options); | |
455 | return 1; | |
ea2384d3 FB |
456 | } |
457 | ||
f382d43a | 458 | static void dump_json_image_check(ImageCheck *check, bool quiet) |
8599ea4c FS |
459 | { |
460 | Error *errp = NULL; | |
461 | QString *str; | |
462 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
463 | QObject *obj; | |
464 | visit_type_ImageCheck(qmp_output_get_visitor(ov), | |
465 | &check, NULL, &errp); | |
466 | obj = qmp_output_get_qobject(ov); | |
467 | str = qobject_to_json_pretty(obj); | |
468 | assert(str != NULL); | |
f382d43a | 469 | qprintf(quiet, "%s\n", qstring_get_str(str)); |
8599ea4c FS |
470 | qobject_decref(obj); |
471 | qmp_output_visitor_cleanup(ov); | |
472 | QDECREF(str); | |
473 | } | |
474 | ||
f382d43a | 475 | static void dump_human_image_check(ImageCheck *check, bool quiet) |
8599ea4c FS |
476 | { |
477 | if (!(check->corruptions || check->leaks || check->check_errors)) { | |
f382d43a | 478 | qprintf(quiet, "No errors were found on the image.\n"); |
8599ea4c FS |
479 | } else { |
480 | if (check->corruptions) { | |
f382d43a MR |
481 | qprintf(quiet, "\n%" PRId64 " errors were found on the image.\n" |
482 | "Data may be corrupted, or further writes to the image " | |
483 | "may corrupt it.\n", | |
484 | check->corruptions); | |
8599ea4c FS |
485 | } |
486 | ||
487 | if (check->leaks) { | |
f382d43a MR |
488 | qprintf(quiet, |
489 | "\n%" PRId64 " leaked clusters were found on the image.\n" | |
490 | "This means waste of disk space, but no harm to data.\n", | |
491 | check->leaks); | |
8599ea4c FS |
492 | } |
493 | ||
494 | if (check->check_errors) { | |
f382d43a MR |
495 | qprintf(quiet, |
496 | "\n%" PRId64 | |
497 | " internal errors have occurred during the check.\n", | |
498 | check->check_errors); | |
8599ea4c FS |
499 | } |
500 | } | |
501 | ||
502 | if (check->total_clusters != 0 && check->allocated_clusters != 0) { | |
f382d43a MR |
503 | qprintf(quiet, "%" PRId64 "/%" PRId64 " = %0.2f%% allocated, " |
504 | "%0.2f%% fragmented, %0.2f%% compressed clusters\n", | |
505 | check->allocated_clusters, check->total_clusters, | |
506 | check->allocated_clusters * 100.0 / check->total_clusters, | |
507 | check->fragmented_clusters * 100.0 / check->allocated_clusters, | |
508 | check->compressed_clusters * 100.0 / | |
509 | check->allocated_clusters); | |
8599ea4c FS |
510 | } |
511 | ||
512 | if (check->image_end_offset) { | |
f382d43a MR |
513 | qprintf(quiet, |
514 | "Image end offset: %" PRId64 "\n", check->image_end_offset); | |
8599ea4c FS |
515 | } |
516 | } | |
517 | ||
518 | static int collect_image_check(BlockDriverState *bs, | |
519 | ImageCheck *check, | |
520 | const char *filename, | |
521 | const char *fmt, | |
522 | int fix) | |
523 | { | |
524 | int ret; | |
525 | BdrvCheckResult result; | |
526 | ||
527 | ret = bdrv_check(bs, &result, fix); | |
528 | if (ret < 0) { | |
529 | return ret; | |
530 | } | |
531 | ||
532 | check->filename = g_strdup(filename); | |
533 | check->format = g_strdup(bdrv_get_format_name(bs)); | |
534 | check->check_errors = result.check_errors; | |
535 | check->corruptions = result.corruptions; | |
536 | check->has_corruptions = result.corruptions != 0; | |
537 | check->leaks = result.leaks; | |
538 | check->has_leaks = result.leaks != 0; | |
539 | check->corruptions_fixed = result.corruptions_fixed; | |
540 | check->has_corruptions_fixed = result.corruptions != 0; | |
541 | check->leaks_fixed = result.leaks_fixed; | |
542 | check->has_leaks_fixed = result.leaks != 0; | |
543 | check->image_end_offset = result.image_end_offset; | |
544 | check->has_image_end_offset = result.image_end_offset != 0; | |
545 | check->total_clusters = result.bfi.total_clusters; | |
546 | check->has_total_clusters = result.bfi.total_clusters != 0; | |
547 | check->allocated_clusters = result.bfi.allocated_clusters; | |
548 | check->has_allocated_clusters = result.bfi.allocated_clusters != 0; | |
549 | check->fragmented_clusters = result.bfi.fragmented_clusters; | |
550 | check->has_fragmented_clusters = result.bfi.fragmented_clusters != 0; | |
e6439d78 SH |
551 | check->compressed_clusters = result.bfi.compressed_clusters; |
552 | check->has_compressed_clusters = result.bfi.compressed_clusters != 0; | |
8599ea4c FS |
553 | |
554 | return 0; | |
555 | } | |
556 | ||
e076f338 KW |
557 | /* |
558 | * Checks an image for consistency. Exit codes: | |
559 | * | |
560 | * 0 - Check completed, image is good | |
561 | * 1 - Check not completed because of internal errors | |
562 | * 2 - Check completed, image is corrupted | |
563 | * 3 - Check completed, image has leaked clusters, but is good otherwise | |
564 | */ | |
1585969c AL |
565 | static int img_check(int argc, char **argv) |
566 | { | |
567 | int c, ret; | |
8599ea4c FS |
568 | OutputFormat output_format = OFORMAT_HUMAN; |
569 | const char *filename, *fmt, *output; | |
1585969c | 570 | BlockDriverState *bs; |
4534ff54 | 571 | int fix = 0; |
058f8f16 | 572 | int flags = BDRV_O_FLAGS | BDRV_O_CHECK; |
8599ea4c | 573 | ImageCheck *check; |
f382d43a | 574 | bool quiet = false; |
1585969c AL |
575 | |
576 | fmt = NULL; | |
8599ea4c | 577 | output = NULL; |
1585969c | 578 | for(;;) { |
8599ea4c FS |
579 | int option_index = 0; |
580 | static const struct option long_options[] = { | |
581 | {"help", no_argument, 0, 'h'}, | |
582 | {"format", required_argument, 0, 'f'}, | |
4fd6a984 | 583 | {"repair", required_argument, 0, 'r'}, |
8599ea4c FS |
584 | {"output", required_argument, 0, OPTION_OUTPUT}, |
585 | {0, 0, 0, 0} | |
586 | }; | |
f382d43a | 587 | c = getopt_long(argc, argv, "f:hr:q", |
8599ea4c | 588 | long_options, &option_index); |
b8fb60da | 589 | if (c == -1) { |
1585969c | 590 | break; |
b8fb60da | 591 | } |
1585969c | 592 | switch(c) { |
ef87394c | 593 | case '?': |
1585969c AL |
594 | case 'h': |
595 | help(); | |
596 | break; | |
597 | case 'f': | |
598 | fmt = optarg; | |
599 | break; | |
4534ff54 KW |
600 | case 'r': |
601 | flags |= BDRV_O_RDWR; | |
602 | ||
603 | if (!strcmp(optarg, "leaks")) { | |
604 | fix = BDRV_FIX_LEAKS; | |
605 | } else if (!strcmp(optarg, "all")) { | |
606 | fix = BDRV_FIX_LEAKS | BDRV_FIX_ERRORS; | |
607 | } else { | |
ac1307ab FZ |
608 | error_exit("Unknown option value for -r " |
609 | "(expecting 'leaks' or 'all'): %s", optarg); | |
4534ff54 KW |
610 | } |
611 | break; | |
8599ea4c FS |
612 | case OPTION_OUTPUT: |
613 | output = optarg; | |
614 | break; | |
f382d43a MR |
615 | case 'q': |
616 | quiet = true; | |
617 | break; | |
1585969c AL |
618 | } |
619 | } | |
fc11eb26 | 620 | if (optind != argc - 1) { |
ac1307ab | 621 | error_exit("Expecting one image file name"); |
b8fb60da | 622 | } |
1585969c AL |
623 | filename = argv[optind++]; |
624 | ||
8599ea4c FS |
625 | if (output && !strcmp(output, "json")) { |
626 | output_format = OFORMAT_JSON; | |
627 | } else if (output && !strcmp(output, "human")) { | |
628 | output_format = OFORMAT_HUMAN; | |
629 | } else if (output) { | |
630 | error_report("--output must be used with human or json as argument."); | |
631 | return 1; | |
632 | } | |
633 | ||
9ffe3332 | 634 | bs = bdrv_new_open("image", filename, fmt, flags, true, quiet); |
c2abccec MK |
635 | if (!bs) { |
636 | return 1; | |
637 | } | |
8599ea4c FS |
638 | |
639 | check = g_new0(ImageCheck, 1); | |
640 | ret = collect_image_check(bs, check, filename, fmt, fix); | |
e076f338 KW |
641 | |
642 | if (ret == -ENOTSUP) { | |
8599ea4c FS |
643 | if (output_format == OFORMAT_HUMAN) { |
644 | error_report("This image format does not support checks"); | |
645 | } | |
fefddf95 | 646 | ret = 63; |
8599ea4c | 647 | goto fail; |
e076f338 KW |
648 | } |
649 | ||
8599ea4c FS |
650 | if (check->corruptions_fixed || check->leaks_fixed) { |
651 | int corruptions_fixed, leaks_fixed; | |
ccf34716 | 652 | |
8599ea4c FS |
653 | leaks_fixed = check->leaks_fixed; |
654 | corruptions_fixed = check->corruptions_fixed; | |
e076f338 | 655 | |
8599ea4c | 656 | if (output_format == OFORMAT_HUMAN) { |
f382d43a MR |
657 | qprintf(quiet, |
658 | "The following inconsistencies were found and repaired:\n\n" | |
659 | " %" PRId64 " leaked clusters\n" | |
660 | " %" PRId64 " corruptions\n\n" | |
661 | "Double checking the fixed image now...\n", | |
662 | check->leaks_fixed, | |
663 | check->corruptions_fixed); | |
e076f338 KW |
664 | } |
665 | ||
8599ea4c | 666 | ret = collect_image_check(bs, check, filename, fmt, 0); |
1585969c | 667 | |
8599ea4c FS |
668 | check->leaks_fixed = leaks_fixed; |
669 | check->corruptions_fixed = corruptions_fixed; | |
f8111c24 DXW |
670 | } |
671 | ||
8599ea4c FS |
672 | switch (output_format) { |
673 | case OFORMAT_HUMAN: | |
f382d43a | 674 | dump_human_image_check(check, quiet); |
8599ea4c FS |
675 | break; |
676 | case OFORMAT_JSON: | |
f382d43a | 677 | dump_json_image_check(check, quiet); |
8599ea4c | 678 | break; |
c6bb9ad1 FS |
679 | } |
680 | ||
8599ea4c FS |
681 | if (ret || check->check_errors) { |
682 | ret = 1; | |
683 | goto fail; | |
c2abccec | 684 | } |
e076f338 | 685 | |
8599ea4c FS |
686 | if (check->corruptions) { |
687 | ret = 2; | |
688 | } else if (check->leaks) { | |
689 | ret = 3; | |
e076f338 | 690 | } else { |
8599ea4c | 691 | ret = 0; |
e076f338 | 692 | } |
8599ea4c FS |
693 | |
694 | fail: | |
695 | qapi_free_ImageCheck(check); | |
4f6fd349 | 696 | bdrv_unref(bs); |
8599ea4c FS |
697 | |
698 | return ret; | |
1585969c AL |
699 | } |
700 | ||
ea2384d3 FB |
701 | static int img_commit(int argc, char **argv) |
702 | { | |
661a0f71 FS |
703 | int c, ret, flags; |
704 | const char *filename, *fmt, *cache; | |
ea2384d3 | 705 | BlockDriverState *bs; |
f382d43a | 706 | bool quiet = false; |
ea2384d3 FB |
707 | |
708 | fmt = NULL; | |
661a0f71 | 709 | cache = BDRV_DEFAULT_CACHE; |
ea2384d3 | 710 | for(;;) { |
f382d43a | 711 | c = getopt(argc, argv, "f:ht:q"); |
b8fb60da | 712 | if (c == -1) { |
ea2384d3 | 713 | break; |
b8fb60da | 714 | } |
ea2384d3 | 715 | switch(c) { |
ef87394c | 716 | case '?': |
ea2384d3 FB |
717 | case 'h': |
718 | help(); | |
719 | break; | |
720 | case 'f': | |
721 | fmt = optarg; | |
722 | break; | |
661a0f71 FS |
723 | case 't': |
724 | cache = optarg; | |
725 | break; | |
f382d43a MR |
726 | case 'q': |
727 | quiet = true; | |
728 | break; | |
ea2384d3 FB |
729 | } |
730 | } | |
fc11eb26 | 731 | if (optind != argc - 1) { |
ac1307ab | 732 | error_exit("Expecting one image file name"); |
b8fb60da | 733 | } |
ea2384d3 FB |
734 | filename = argv[optind++]; |
735 | ||
661a0f71 | 736 | flags = BDRV_O_RDWR; |
c3993cdc | 737 | ret = bdrv_parse_cache_flags(cache, &flags); |
661a0f71 FS |
738 | if (ret < 0) { |
739 | error_report("Invalid cache option: %s", cache); | |
740 | return -1; | |
741 | } | |
742 | ||
9ffe3332 | 743 | bs = bdrv_new_open("image", filename, fmt, flags, true, quiet); |
c2abccec MK |
744 | if (!bs) { |
745 | return 1; | |
746 | } | |
ea2384d3 FB |
747 | ret = bdrv_commit(bs); |
748 | switch(ret) { | |
749 | case 0: | |
f382d43a | 750 | qprintf(quiet, "Image committed.\n"); |
ea2384d3 FB |
751 | break; |
752 | case -ENOENT: | |
15654a6d | 753 | error_report("No disk inserted"); |
ea2384d3 FB |
754 | break; |
755 | case -EACCES: | |
15654a6d | 756 | error_report("Image is read-only"); |
ea2384d3 FB |
757 | break; |
758 | case -ENOTSUP: | |
15654a6d | 759 | error_report("Image is already committed"); |
ea2384d3 FB |
760 | break; |
761 | default: | |
15654a6d | 762 | error_report("Error while committing image"); |
ea2384d3 FB |
763 | break; |
764 | } | |
765 | ||
4f6fd349 | 766 | bdrv_unref(bs); |
c2abccec MK |
767 | if (ret) { |
768 | return 1; | |
769 | } | |
ea2384d3 FB |
770 | return 0; |
771 | } | |
772 | ||
f58c7b35 TS |
773 | /* |
774 | * Returns true iff the first sector pointed to by 'buf' contains at least | |
775 | * a non-NUL byte. | |
776 | * | |
777 | * 'pnum' is set to the number of sectors (including and immediately following | |
778 | * the first one) that are known to be in the same allocated/unallocated state. | |
779 | */ | |
ea2384d3 FB |
780 | static int is_allocated_sectors(const uint8_t *buf, int n, int *pnum) |
781 | { | |
1a6d39fd SH |
782 | bool is_zero; |
783 | int i; | |
ea2384d3 FB |
784 | |
785 | if (n <= 0) { | |
786 | *pnum = 0; | |
787 | return 0; | |
788 | } | |
1a6d39fd | 789 | is_zero = buffer_is_zero(buf, 512); |
ea2384d3 FB |
790 | for(i = 1; i < n; i++) { |
791 | buf += 512; | |
1a6d39fd | 792 | if (is_zero != buffer_is_zero(buf, 512)) { |
ea2384d3 | 793 | break; |
1a6d39fd | 794 | } |
ea2384d3 FB |
795 | } |
796 | *pnum = i; | |
1a6d39fd | 797 | return !is_zero; |
ea2384d3 FB |
798 | } |
799 | ||
a22f123c KW |
800 | /* |
801 | * Like is_allocated_sectors, but if the buffer starts with a used sector, | |
802 | * up to 'min' consecutive sectors containing zeros are ignored. This avoids | |
803 | * breaking up write requests for only small sparse areas. | |
804 | */ | |
805 | static int is_allocated_sectors_min(const uint8_t *buf, int n, int *pnum, | |
806 | int min) | |
807 | { | |
808 | int ret; | |
809 | int num_checked, num_used; | |
810 | ||
811 | if (n < min) { | |
812 | min = n; | |
813 | } | |
814 | ||
815 | ret = is_allocated_sectors(buf, n, pnum); | |
816 | if (!ret) { | |
817 | return ret; | |
818 | } | |
819 | ||
820 | num_used = *pnum; | |
821 | buf += BDRV_SECTOR_SIZE * *pnum; | |
822 | n -= *pnum; | |
823 | num_checked = num_used; | |
824 | ||
825 | while (n > 0) { | |
826 | ret = is_allocated_sectors(buf, n, pnum); | |
827 | ||
828 | buf += BDRV_SECTOR_SIZE * *pnum; | |
829 | n -= *pnum; | |
830 | num_checked += *pnum; | |
831 | if (ret) { | |
832 | num_used = num_checked; | |
833 | } else if (*pnum >= min) { | |
834 | break; | |
835 | } | |
836 | } | |
837 | ||
838 | *pnum = num_used; | |
839 | return 1; | |
840 | } | |
841 | ||
3e85c6fd KW |
842 | /* |
843 | * Compares two buffers sector by sector. Returns 0 if the first sector of both | |
844 | * buffers matches, non-zero otherwise. | |
845 | * | |
846 | * pnum is set to the number of sectors (including and immediately following | |
847 | * the first one) that are known to have the same comparison result | |
848 | */ | |
849 | static int compare_sectors(const uint8_t *buf1, const uint8_t *buf2, int n, | |
850 | int *pnum) | |
851 | { | |
852 | int res, i; | |
853 | ||
854 | if (n <= 0) { | |
855 | *pnum = 0; | |
856 | return 0; | |
857 | } | |
858 | ||
859 | res = !!memcmp(buf1, buf2, 512); | |
860 | for(i = 1; i < n; i++) { | |
861 | buf1 += 512; | |
862 | buf2 += 512; | |
863 | ||
864 | if (!!memcmp(buf1, buf2, 512) != res) { | |
865 | break; | |
866 | } | |
867 | } | |
868 | ||
869 | *pnum = i; | |
870 | return res; | |
871 | } | |
872 | ||
80ee15a6 | 873 | #define IO_BUF_SIZE (2 * 1024 * 1024) |
ea2384d3 | 874 | |
d14ed18c MR |
875 | static int64_t sectors_to_bytes(int64_t sectors) |
876 | { | |
877 | return sectors << BDRV_SECTOR_BITS; | |
878 | } | |
879 | ||
880 | static int64_t sectors_to_process(int64_t total, int64_t from) | |
881 | { | |
882 | return MIN(total - from, IO_BUF_SIZE >> BDRV_SECTOR_BITS); | |
883 | } | |
884 | ||
885 | /* | |
886 | * Check if passed sectors are empty (not allocated or contain only 0 bytes) | |
887 | * | |
888 | * Returns 0 in case sectors are filled with 0, 1 if sectors contain non-zero | |
889 | * data and negative value on error. | |
890 | * | |
891 | * @param bs: Driver used for accessing file | |
892 | * @param sect_num: Number of first sector to check | |
893 | * @param sect_count: Number of sectors to check | |
894 | * @param filename: Name of disk file we are checking (logging purpose) | |
895 | * @param buffer: Allocated buffer for storing read data | |
896 | * @param quiet: Flag for quiet mode | |
897 | */ | |
898 | static int check_empty_sectors(BlockDriverState *bs, int64_t sect_num, | |
899 | int sect_count, const char *filename, | |
900 | uint8_t *buffer, bool quiet) | |
901 | { | |
902 | int pnum, ret = 0; | |
903 | ret = bdrv_read(bs, sect_num, buffer, sect_count); | |
904 | if (ret < 0) { | |
905 | error_report("Error while reading offset %" PRId64 " of %s: %s", | |
906 | sectors_to_bytes(sect_num), filename, strerror(-ret)); | |
907 | return ret; | |
908 | } | |
909 | ret = is_allocated_sectors(buffer, sect_count, &pnum); | |
910 | if (ret || pnum != sect_count) { | |
911 | qprintf(quiet, "Content mismatch at offset %" PRId64 "!\n", | |
912 | sectors_to_bytes(ret ? sect_num : sect_num + pnum)); | |
913 | return 1; | |
914 | } | |
915 | ||
916 | return 0; | |
917 | } | |
918 | ||
919 | /* | |
920 | * Compares two images. Exit codes: | |
921 | * | |
922 | * 0 - Images are identical | |
923 | * 1 - Images differ | |
924 | * >1 - Error occurred | |
925 | */ | |
926 | static int img_compare(int argc, char **argv) | |
927 | { | |
928 | const char *fmt1 = NULL, *fmt2 = NULL, *filename1, *filename2; | |
929 | BlockDriverState *bs1, *bs2; | |
930 | int64_t total_sectors1, total_sectors2; | |
931 | uint8_t *buf1 = NULL, *buf2 = NULL; | |
932 | int pnum1, pnum2; | |
933 | int allocated1, allocated2; | |
934 | int ret = 0; /* return value - 0 Ident, 1 Different, >1 Error */ | |
935 | bool progress = false, quiet = false, strict = false; | |
936 | int64_t total_sectors; | |
937 | int64_t sector_num = 0; | |
938 | int64_t nb_sectors; | |
939 | int c, pnum; | |
940 | uint64_t bs_sectors; | |
941 | uint64_t progress_base; | |
942 | ||
943 | for (;;) { | |
944 | c = getopt(argc, argv, "hpf:F:sq"); | |
945 | if (c == -1) { | |
946 | break; | |
947 | } | |
948 | switch (c) { | |
949 | case '?': | |
950 | case 'h': | |
951 | help(); | |
952 | break; | |
953 | case 'f': | |
954 | fmt1 = optarg; | |
955 | break; | |
956 | case 'F': | |
957 | fmt2 = optarg; | |
958 | break; | |
959 | case 'p': | |
960 | progress = true; | |
961 | break; | |
962 | case 'q': | |
963 | quiet = true; | |
964 | break; | |
965 | case 's': | |
966 | strict = true; | |
967 | break; | |
968 | } | |
969 | } | |
970 | ||
971 | /* Progress is not shown in Quiet mode */ | |
972 | if (quiet) { | |
973 | progress = false; | |
974 | } | |
975 | ||
976 | ||
fc11eb26 | 977 | if (optind != argc - 2) { |
ac1307ab | 978 | error_exit("Expecting two image file names"); |
d14ed18c MR |
979 | } |
980 | filename1 = argv[optind++]; | |
981 | filename2 = argv[optind++]; | |
982 | ||
983 | /* Initialize before goto out */ | |
984 | qemu_progress_init(progress, 2.0); | |
985 | ||
9ffe3332 | 986 | bs1 = bdrv_new_open("image 1", filename1, fmt1, BDRV_O_FLAGS, true, quiet); |
d14ed18c MR |
987 | if (!bs1) { |
988 | error_report("Can't open file %s", filename1); | |
989 | ret = 2; | |
990 | goto out3; | |
991 | } | |
992 | ||
9ffe3332 | 993 | bs2 = bdrv_new_open("image 2", filename2, fmt2, BDRV_O_FLAGS, true, quiet); |
d14ed18c MR |
994 | if (!bs2) { |
995 | error_report("Can't open file %s", filename2); | |
996 | ret = 2; | |
997 | goto out2; | |
998 | } | |
999 | ||
1000 | buf1 = qemu_blockalign(bs1, IO_BUF_SIZE); | |
1001 | buf2 = qemu_blockalign(bs2, IO_BUF_SIZE); | |
1002 | bdrv_get_geometry(bs1, &bs_sectors); | |
1003 | total_sectors1 = bs_sectors; | |
1004 | bdrv_get_geometry(bs2, &bs_sectors); | |
1005 | total_sectors2 = bs_sectors; | |
1006 | total_sectors = MIN(total_sectors1, total_sectors2); | |
1007 | progress_base = MAX(total_sectors1, total_sectors2); | |
1008 | ||
1009 | qemu_progress_print(0, 100); | |
1010 | ||
1011 | if (strict && total_sectors1 != total_sectors2) { | |
1012 | ret = 1; | |
1013 | qprintf(quiet, "Strict mode: Image size mismatch!\n"); | |
1014 | goto out; | |
1015 | } | |
1016 | ||
1017 | for (;;) { | |
1018 | nb_sectors = sectors_to_process(total_sectors, sector_num); | |
1019 | if (nb_sectors <= 0) { | |
1020 | break; | |
1021 | } | |
1022 | allocated1 = bdrv_is_allocated_above(bs1, NULL, sector_num, nb_sectors, | |
1023 | &pnum1); | |
1024 | if (allocated1 < 0) { | |
1025 | ret = 3; | |
1026 | error_report("Sector allocation test failed for %s", filename1); | |
1027 | goto out; | |
1028 | } | |
1029 | ||
1030 | allocated2 = bdrv_is_allocated_above(bs2, NULL, sector_num, nb_sectors, | |
1031 | &pnum2); | |
1032 | if (allocated2 < 0) { | |
1033 | ret = 3; | |
1034 | error_report("Sector allocation test failed for %s", filename2); | |
1035 | goto out; | |
1036 | } | |
1037 | nb_sectors = MIN(pnum1, pnum2); | |
1038 | ||
1039 | if (allocated1 == allocated2) { | |
1040 | if (allocated1) { | |
1041 | ret = bdrv_read(bs1, sector_num, buf1, nb_sectors); | |
1042 | if (ret < 0) { | |
1043 | error_report("Error while reading offset %" PRId64 " of %s:" | |
1044 | " %s", sectors_to_bytes(sector_num), filename1, | |
1045 | strerror(-ret)); | |
1046 | ret = 4; | |
1047 | goto out; | |
1048 | } | |
1049 | ret = bdrv_read(bs2, sector_num, buf2, nb_sectors); | |
1050 | if (ret < 0) { | |
1051 | error_report("Error while reading offset %" PRId64 | |
1052 | " of %s: %s", sectors_to_bytes(sector_num), | |
1053 | filename2, strerror(-ret)); | |
1054 | ret = 4; | |
1055 | goto out; | |
1056 | } | |
1057 | ret = compare_sectors(buf1, buf2, nb_sectors, &pnum); | |
1058 | if (ret || pnum != nb_sectors) { | |
d14ed18c MR |
1059 | qprintf(quiet, "Content mismatch at offset %" PRId64 "!\n", |
1060 | sectors_to_bytes( | |
1061 | ret ? sector_num : sector_num + pnum)); | |
36452f12 | 1062 | ret = 1; |
d14ed18c MR |
1063 | goto out; |
1064 | } | |
1065 | } | |
1066 | } else { | |
1067 | if (strict) { | |
1068 | ret = 1; | |
1069 | qprintf(quiet, "Strict mode: Offset %" PRId64 | |
1070 | " allocation mismatch!\n", | |
1071 | sectors_to_bytes(sector_num)); | |
1072 | goto out; | |
1073 | } | |
1074 | ||
1075 | if (allocated1) { | |
1076 | ret = check_empty_sectors(bs1, sector_num, nb_sectors, | |
1077 | filename1, buf1, quiet); | |
1078 | } else { | |
1079 | ret = check_empty_sectors(bs2, sector_num, nb_sectors, | |
1080 | filename2, buf1, quiet); | |
1081 | } | |
1082 | if (ret) { | |
1083 | if (ret < 0) { | |
d14ed18c MR |
1084 | error_report("Error while reading offset %" PRId64 ": %s", |
1085 | sectors_to_bytes(sector_num), strerror(-ret)); | |
36452f12 | 1086 | ret = 4; |
d14ed18c MR |
1087 | } |
1088 | goto out; | |
1089 | } | |
1090 | } | |
1091 | sector_num += nb_sectors; | |
1092 | qemu_progress_print(((float) nb_sectors / progress_base)*100, 100); | |
1093 | } | |
1094 | ||
1095 | if (total_sectors1 != total_sectors2) { | |
1096 | BlockDriverState *bs_over; | |
1097 | int64_t total_sectors_over; | |
1098 | const char *filename_over; | |
1099 | ||
1100 | qprintf(quiet, "Warning: Image size mismatch!\n"); | |
1101 | if (total_sectors1 > total_sectors2) { | |
1102 | total_sectors_over = total_sectors1; | |
1103 | bs_over = bs1; | |
1104 | filename_over = filename1; | |
1105 | } else { | |
1106 | total_sectors_over = total_sectors2; | |
1107 | bs_over = bs2; | |
1108 | filename_over = filename2; | |
1109 | } | |
1110 | ||
1111 | for (;;) { | |
1112 | nb_sectors = sectors_to_process(total_sectors_over, sector_num); | |
1113 | if (nb_sectors <= 0) { | |
1114 | break; | |
1115 | } | |
1116 | ret = bdrv_is_allocated_above(bs_over, NULL, sector_num, | |
1117 | nb_sectors, &pnum); | |
1118 | if (ret < 0) { | |
1119 | ret = 3; | |
1120 | error_report("Sector allocation test failed for %s", | |
1121 | filename_over); | |
1122 | goto out; | |
1123 | ||
1124 | } | |
1125 | nb_sectors = pnum; | |
1126 | if (ret) { | |
1127 | ret = check_empty_sectors(bs_over, sector_num, nb_sectors, | |
1128 | filename_over, buf1, quiet); | |
1129 | if (ret) { | |
1130 | if (ret < 0) { | |
d14ed18c MR |
1131 | error_report("Error while reading offset %" PRId64 |
1132 | " of %s: %s", sectors_to_bytes(sector_num), | |
1133 | filename_over, strerror(-ret)); | |
36452f12 | 1134 | ret = 4; |
d14ed18c MR |
1135 | } |
1136 | goto out; | |
1137 | } | |
1138 | } | |
1139 | sector_num += nb_sectors; | |
1140 | qemu_progress_print(((float) nb_sectors / progress_base)*100, 100); | |
1141 | } | |
1142 | } | |
1143 | ||
1144 | qprintf(quiet, "Images are identical.\n"); | |
1145 | ret = 0; | |
1146 | ||
1147 | out: | |
4f6fd349 | 1148 | bdrv_unref(bs2); |
d14ed18c MR |
1149 | qemu_vfree(buf1); |
1150 | qemu_vfree(buf2); | |
1151 | out2: | |
4f6fd349 | 1152 | bdrv_unref(bs1); |
d14ed18c MR |
1153 | out3: |
1154 | qemu_progress_end(); | |
1155 | return ret; | |
1156 | } | |
1157 | ||
ea2384d3 FB |
1158 | static int img_convert(int argc, char **argv) |
1159 | { | |
24f833cd | 1160 | int c, n, n1, bs_n, bs_i, compress, cluster_sectors, skip_create; |
13c28af8 | 1161 | int64_t ret = 0; |
661a0f71 FS |
1162 | int progress = 0, flags; |
1163 | const char *fmt, *out_fmt, *cache, *out_baseimg, *out_filename; | |
b50cbabc | 1164 | BlockDriver *drv, *proto_drv; |
c2abccec | 1165 | BlockDriverState **bs = NULL, *out_bs = NULL; |
802c3d4c | 1166 | int64_t total_sectors, nb_sectors, sector_num, bs_offset; |
96b8f136 | 1167 | uint64_t bs_sectors; |
c2abccec | 1168 | uint8_t * buf = NULL; |
f2521c90 | 1169 | size_t bufsectors = IO_BUF_SIZE / BDRV_SECTOR_SIZE; |
ea2384d3 | 1170 | const uint8_t *buf1; |
faea38e7 | 1171 | BlockDriverInfo bdi; |
b50cbabc | 1172 | QEMUOptionParameter *param = NULL, *create_options = NULL; |
a18953fb | 1173 | QEMUOptionParameter *out_baseimg_param; |
efa84d43 | 1174 | char *options = NULL; |
51ef6727 | 1175 | const char *snapshot_name = NULL; |
a22f123c | 1176 | int min_sparse = 8; /* Need at least 4k of zeros for sparse detection */ |
f382d43a | 1177 | bool quiet = false; |
cc84d90f | 1178 | Error *local_err = NULL; |
ef80654d | 1179 | QemuOpts *sn_opts = NULL; |
ea2384d3 FB |
1180 | |
1181 | fmt = NULL; | |
1182 | out_fmt = "raw"; | |
661a0f71 | 1183 | cache = "unsafe"; |
f58c7b35 | 1184 | out_baseimg = NULL; |
eec77d9e | 1185 | compress = 0; |
b2e10493 | 1186 | skip_create = 0; |
ea2384d3 | 1187 | for(;;) { |
ef80654d | 1188 | c = getopt(argc, argv, "f:O:B:s:hce6o:pS:t:qnl:"); |
b8fb60da | 1189 | if (c == -1) { |
ea2384d3 | 1190 | break; |
b8fb60da | 1191 | } |
ea2384d3 | 1192 | switch(c) { |
ef87394c | 1193 | case '?': |
ea2384d3 FB |
1194 | case 'h': |
1195 | help(); | |
1196 | break; | |
1197 | case 'f': | |
1198 | fmt = optarg; | |
1199 | break; | |
1200 | case 'O': | |
1201 | out_fmt = optarg; | |
1202 | break; | |
f58c7b35 TS |
1203 | case 'B': |
1204 | out_baseimg = optarg; | |
1205 | break; | |
ea2384d3 | 1206 | case 'c': |
eec77d9e | 1207 | compress = 1; |
ea2384d3 FB |
1208 | break; |
1209 | case 'e': | |
9d42e15d | 1210 | error_report("option -e is deprecated, please use \'-o " |
eec77d9e | 1211 | "encryption\' instead!"); |
2dc8328b | 1212 | ret = -1; |
64bb01aa | 1213 | goto fail_getopt; |
ec36ba14 | 1214 | case '6': |
9d42e15d | 1215 | error_report("option -6 is deprecated, please use \'-o " |
eec77d9e | 1216 | "compat6\' instead!"); |
2dc8328b | 1217 | ret = -1; |
64bb01aa | 1218 | goto fail_getopt; |
efa84d43 | 1219 | case 'o': |
2dc8328b KW |
1220 | if (!is_valid_option_list(optarg)) { |
1221 | error_report("Invalid option list: %s", optarg); | |
1222 | ret = -1; | |
64bb01aa | 1223 | goto fail_getopt; |
2dc8328b KW |
1224 | } |
1225 | if (!options) { | |
1226 | options = g_strdup(optarg); | |
1227 | } else { | |
1228 | char *old_options = options; | |
1229 | options = g_strdup_printf("%s,%s", options, optarg); | |
1230 | g_free(old_options); | |
1231 | } | |
efa84d43 | 1232 | break; |
51ef6727 | 1233 | case 's': |
1234 | snapshot_name = optarg; | |
1235 | break; | |
ef80654d WX |
1236 | case 'l': |
1237 | if (strstart(optarg, SNAPSHOT_OPT_BASE, NULL)) { | |
1238 | sn_opts = qemu_opts_parse(&internal_snapshot_opts, optarg, 0); | |
1239 | if (!sn_opts) { | |
1240 | error_report("Failed in parsing snapshot param '%s'", | |
1241 | optarg); | |
2dc8328b | 1242 | ret = -1; |
64bb01aa | 1243 | goto fail_getopt; |
ef80654d WX |
1244 | } |
1245 | } else { | |
1246 | snapshot_name = optarg; | |
1247 | } | |
1248 | break; | |
a22f123c KW |
1249 | case 'S': |
1250 | { | |
1251 | int64_t sval; | |
e36b3695 MA |
1252 | char *end; |
1253 | sval = strtosz_suffix(optarg, &end, STRTOSZ_DEFSUFFIX_B); | |
1254 | if (sval < 0 || *end) { | |
a22f123c | 1255 | error_report("Invalid minimum zero buffer size for sparse output specified"); |
2dc8328b | 1256 | ret = -1; |
64bb01aa | 1257 | goto fail_getopt; |
a22f123c KW |
1258 | } |
1259 | ||
1260 | min_sparse = sval / BDRV_SECTOR_SIZE; | |
1261 | break; | |
1262 | } | |
6b837bc4 JS |
1263 | case 'p': |
1264 | progress = 1; | |
1265 | break; | |
661a0f71 FS |
1266 | case 't': |
1267 | cache = optarg; | |
1268 | break; | |
f382d43a MR |
1269 | case 'q': |
1270 | quiet = true; | |
1271 | break; | |
b2e10493 AD |
1272 | case 'n': |
1273 | skip_create = 1; | |
1274 | break; | |
ea2384d3 FB |
1275 | } |
1276 | } | |
3b46e624 | 1277 | |
64bb01aa | 1278 | /* Initialize before goto out */ |
f382d43a MR |
1279 | if (quiet) { |
1280 | progress = 0; | |
1281 | } | |
64bb01aa KW |
1282 | qemu_progress_init(progress, 1.0); |
1283 | ||
f382d43a | 1284 | |
926c2d23 | 1285 | bs_n = argc - optind - 1; |
a283cb6e | 1286 | out_filename = bs_n >= 1 ? argv[argc - 1] : NULL; |
f58c7b35 | 1287 | |
2dc8328b | 1288 | if (options && has_help_option(options)) { |
4ac8aacd JS |
1289 | ret = print_block_option_help(out_filename, out_fmt); |
1290 | goto out; | |
1291 | } | |
1292 | ||
a283cb6e | 1293 | if (bs_n < 1) { |
ac1307ab | 1294 | error_exit("Must specify image file name"); |
a283cb6e KW |
1295 | } |
1296 | ||
1297 | ||
c2abccec | 1298 | if (bs_n > 1 && out_baseimg) { |
15654a6d JS |
1299 | error_report("-B makes no sense when concatenating multiple input " |
1300 | "images"); | |
31ca34b8 JS |
1301 | ret = -1; |
1302 | goto out; | |
c2abccec | 1303 | } |
f8111c24 | 1304 | |
6b837bc4 JS |
1305 | qemu_progress_print(0, 100); |
1306 | ||
7267c094 | 1307 | bs = g_malloc0(bs_n * sizeof(BlockDriverState *)); |
926c2d23 AZ |
1308 | |
1309 | total_sectors = 0; | |
1310 | for (bs_i = 0; bs_i < bs_n; bs_i++) { | |
9ffe3332 KW |
1311 | char *id = bs_n > 1 ? g_strdup_printf("source %d", bs_i) |
1312 | : g_strdup("source"); | |
1313 | bs[bs_i] = bdrv_new_open(id, argv[optind + bs_i], fmt, BDRV_O_FLAGS, | |
1314 | true, quiet); | |
1315 | g_free(id); | |
c2abccec | 1316 | if (!bs[bs_i]) { |
15654a6d | 1317 | error_report("Could not open '%s'", argv[optind + bs_i]); |
c2abccec MK |
1318 | ret = -1; |
1319 | goto out; | |
1320 | } | |
926c2d23 AZ |
1321 | bdrv_get_geometry(bs[bs_i], &bs_sectors); |
1322 | total_sectors += bs_sectors; | |
1323 | } | |
ea2384d3 | 1324 | |
ef80654d WX |
1325 | if (sn_opts) { |
1326 | ret = bdrv_snapshot_load_tmp(bs[0], | |
1327 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_ID), | |
1328 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_NAME), | |
1329 | &local_err); | |
1330 | } else if (snapshot_name != NULL) { | |
51ef6727 | 1331 | if (bs_n > 1) { |
6daf194d | 1332 | error_report("No support for concatenating multiple snapshot"); |
51ef6727 | 1333 | ret = -1; |
1334 | goto out; | |
1335 | } | |
7b4c4781 WX |
1336 | |
1337 | bdrv_snapshot_load_tmp_by_id_or_name(bs[0], snapshot_name, &local_err); | |
ef80654d | 1338 | } |
84d18f06 | 1339 | if (local_err) { |
ef80654d WX |
1340 | error_report("Failed to load snapshot: %s", |
1341 | error_get_pretty(local_err)); | |
1342 | error_free(local_err); | |
1343 | ret = -1; | |
1344 | goto out; | |
51ef6727 | 1345 | } |
1346 | ||
efa84d43 | 1347 | /* Find driver and parse its options */ |
ea2384d3 | 1348 | drv = bdrv_find_format(out_fmt); |
c2abccec | 1349 | if (!drv) { |
15654a6d | 1350 | error_report("Unknown file format '%s'", out_fmt); |
c2abccec MK |
1351 | ret = -1; |
1352 | goto out; | |
1353 | } | |
efa84d43 | 1354 | |
98289620 | 1355 | proto_drv = bdrv_find_protocol(out_filename, true); |
c2abccec | 1356 | if (!proto_drv) { |
15654a6d | 1357 | error_report("Unknown protocol '%s'", out_filename); |
c2abccec MK |
1358 | ret = -1; |
1359 | goto out; | |
1360 | } | |
b50cbabc MK |
1361 | |
1362 | create_options = append_option_parameters(create_options, | |
1363 | drv->create_options); | |
1364 | create_options = append_option_parameters(create_options, | |
1365 | proto_drv->create_options); | |
db08adf5 | 1366 | |
efa84d43 | 1367 | if (options) { |
b50cbabc | 1368 | param = parse_option_parameters(options, create_options, param); |
efa84d43 | 1369 | if (param == NULL) { |
15654a6d | 1370 | error_report("Invalid options for file format '%s'.", out_fmt); |
c2abccec MK |
1371 | ret = -1; |
1372 | goto out; | |
efa84d43 KW |
1373 | } |
1374 | } else { | |
b50cbabc | 1375 | param = parse_option_parameters("", create_options, param); |
efa84d43 KW |
1376 | } |
1377 | ||
1378 | set_option_parameter_int(param, BLOCK_OPT_SIZE, total_sectors * 512); | |
eec77d9e | 1379 | ret = add_old_style_options(out_fmt, param, out_baseimg, NULL); |
c2abccec MK |
1380 | if (ret < 0) { |
1381 | goto out; | |
1382 | } | |
efa84d43 | 1383 | |
a18953fb KW |
1384 | /* Get backing file name if -o backing_file was used */ |
1385 | out_baseimg_param = get_option_parameter(param, BLOCK_OPT_BACKING_FILE); | |
1386 | if (out_baseimg_param) { | |
1387 | out_baseimg = out_baseimg_param->value.s; | |
1388 | } | |
1389 | ||
efa84d43 | 1390 | /* Check if compression is supported */ |
eec77d9e | 1391 | if (compress) { |
efa84d43 KW |
1392 | QEMUOptionParameter *encryption = |
1393 | get_option_parameter(param, BLOCK_OPT_ENCRYPT); | |
41521fa4 KW |
1394 | QEMUOptionParameter *preallocation = |
1395 | get_option_parameter(param, BLOCK_OPT_PREALLOC); | |
efa84d43 KW |
1396 | |
1397 | if (!drv->bdrv_write_compressed) { | |
15654a6d | 1398 | error_report("Compression not supported for this file format"); |
c2abccec MK |
1399 | ret = -1; |
1400 | goto out; | |
efa84d43 KW |
1401 | } |
1402 | ||
1403 | if (encryption && encryption->value.n) { | |
15654a6d JS |
1404 | error_report("Compression and encryption not supported at " |
1405 | "the same time"); | |
c2abccec MK |
1406 | ret = -1; |
1407 | goto out; | |
efa84d43 | 1408 | } |
41521fa4 KW |
1409 | |
1410 | if (preallocation && preallocation->value.s | |
1411 | && strcmp(preallocation->value.s, "off")) | |
1412 | { | |
1413 | error_report("Compression and preallocation not supported at " | |
1414 | "the same time"); | |
1415 | ret = -1; | |
1416 | goto out; | |
1417 | } | |
efa84d43 KW |
1418 | } |
1419 | ||
b2e10493 AD |
1420 | if (!skip_create) { |
1421 | /* Create the new image */ | |
cc84d90f | 1422 | ret = bdrv_create(drv, out_filename, param, &local_err); |
b2e10493 | 1423 | if (ret < 0) { |
cc84d90f HR |
1424 | error_report("%s: error while converting %s: %s", |
1425 | out_filename, out_fmt, error_get_pretty(local_err)); | |
1426 | error_free(local_err); | |
b2e10493 | 1427 | goto out; |
ea2384d3 FB |
1428 | } |
1429 | } | |
3b46e624 | 1430 | |
5a37b60a | 1431 | flags = min_sparse ? (BDRV_O_RDWR | BDRV_O_UNMAP) : BDRV_O_RDWR; |
c3993cdc | 1432 | ret = bdrv_parse_cache_flags(cache, &flags); |
661a0f71 FS |
1433 | if (ret < 0) { |
1434 | error_report("Invalid cache option: %s", cache); | |
1435 | return -1; | |
1436 | } | |
1437 | ||
9ffe3332 | 1438 | out_bs = bdrv_new_open("target", out_filename, out_fmt, flags, true, quiet); |
c2abccec MK |
1439 | if (!out_bs) { |
1440 | ret = -1; | |
1441 | goto out; | |
1442 | } | |
ea2384d3 | 1443 | |
926c2d23 AZ |
1444 | bs_i = 0; |
1445 | bs_offset = 0; | |
1446 | bdrv_get_geometry(bs[0], &bs_sectors); | |
f2521c90 PL |
1447 | |
1448 | /* increase bufsectors from the default 4096 (2M) if opt_transfer_length | |
1449 | * or discard_alignment of the out_bs is greater. Limit to 32768 (16MB) | |
1450 | * as maximum. */ | |
1451 | bufsectors = MIN(32768, | |
1452 | MAX(bufsectors, MAX(out_bs->bl.opt_transfer_length, | |
1453 | out_bs->bl.discard_alignment)) | |
1454 | ); | |
1455 | ||
1456 | buf = qemu_blockalign(out_bs, bufsectors * BDRV_SECTOR_SIZE); | |
926c2d23 | 1457 | |
b2e10493 AD |
1458 | if (skip_create) { |
1459 | int64_t output_length = bdrv_getlength(out_bs); | |
1460 | if (output_length < 0) { | |
1461 | error_report("unable to get output image length: %s\n", | |
1462 | strerror(-output_length)); | |
1463 | ret = -1; | |
1464 | goto out; | |
1465 | } else if (output_length < total_sectors << BDRV_SECTOR_BITS) { | |
1466 | error_report("output file is smaller than input file"); | |
1467 | ret = -1; | |
1468 | goto out; | |
1469 | } | |
1470 | } | |
1471 | ||
24f833cd PL |
1472 | cluster_sectors = 0; |
1473 | ret = bdrv_get_info(out_bs, &bdi); | |
1474 | if (ret < 0) { | |
1475 | if (compress) { | |
15654a6d | 1476 | error_report("could not get block driver info"); |
c2abccec MK |
1477 | goto out; |
1478 | } | |
24f833cd PL |
1479 | } else { |
1480 | cluster_sectors = bdi.cluster_size / BDRV_SECTOR_SIZE; | |
1481 | } | |
1482 | ||
1483 | if (compress) { | |
1484 | if (cluster_sectors <= 0 || cluster_sectors > bufsectors) { | |
15654a6d | 1485 | error_report("invalid cluster size"); |
c2abccec MK |
1486 | ret = -1; |
1487 | goto out; | |
1488 | } | |
ea2384d3 | 1489 | sector_num = 0; |
6b837bc4 JS |
1490 | |
1491 | nb_sectors = total_sectors; | |
6b837bc4 | 1492 | |
ea2384d3 | 1493 | for(;;) { |
926c2d23 AZ |
1494 | int64_t bs_num; |
1495 | int remainder; | |
1496 | uint8_t *buf2; | |
1497 | ||
ea2384d3 FB |
1498 | nb_sectors = total_sectors - sector_num; |
1499 | if (nb_sectors <= 0) | |
1500 | break; | |
1501 | if (nb_sectors >= cluster_sectors) | |
1502 | n = cluster_sectors; | |
1503 | else | |
1504 | n = nb_sectors; | |
926c2d23 AZ |
1505 | |
1506 | bs_num = sector_num - bs_offset; | |
1507 | assert (bs_num >= 0); | |
1508 | remainder = n; | |
1509 | buf2 = buf; | |
1510 | while (remainder > 0) { | |
1511 | int nlow; | |
1512 | while (bs_num == bs_sectors) { | |
1513 | bs_i++; | |
1514 | assert (bs_i < bs_n); | |
1515 | bs_offset += bs_sectors; | |
1516 | bdrv_get_geometry(bs[bs_i], &bs_sectors); | |
1517 | bs_num = 0; | |
0bfcd599 BS |
1518 | /* printf("changing part: sector_num=%" PRId64 ", " |
1519 | "bs_i=%d, bs_offset=%" PRId64 ", bs_sectors=%" PRId64 | |
1520 | "\n", sector_num, bs_i, bs_offset, bs_sectors); */ | |
926c2d23 AZ |
1521 | } |
1522 | assert (bs_num < bs_sectors); | |
1523 | ||
1524 | nlow = (remainder > bs_sectors - bs_num) ? bs_sectors - bs_num : remainder; | |
1525 | ||
c2abccec MK |
1526 | ret = bdrv_read(bs[bs_i], bs_num, buf2, nlow); |
1527 | if (ret < 0) { | |
3fba9d81 SH |
1528 | error_report("error while reading sector %" PRId64 ": %s", |
1529 | bs_num, strerror(-ret)); | |
c2abccec MK |
1530 | goto out; |
1531 | } | |
926c2d23 AZ |
1532 | |
1533 | buf2 += nlow * 512; | |
1534 | bs_num += nlow; | |
1535 | ||
1536 | remainder -= nlow; | |
1537 | } | |
1538 | assert (remainder == 0); | |
1539 | ||
54f106d5 SH |
1540 | if (!buffer_is_zero(buf, n * BDRV_SECTOR_SIZE)) { |
1541 | ret = bdrv_write_compressed(out_bs, sector_num, buf, n); | |
c2abccec | 1542 | if (ret != 0) { |
3fba9d81 SH |
1543 | error_report("error while compressing sector %" PRId64 |
1544 | ": %s", sector_num, strerror(-ret)); | |
c2abccec MK |
1545 | goto out; |
1546 | } | |
ea2384d3 FB |
1547 | } |
1548 | sector_num += n; | |
13c28af8 | 1549 | qemu_progress_print(100.0 * sector_num / total_sectors, 0); |
ea2384d3 | 1550 | } |
faea38e7 FB |
1551 | /* signal EOF to align */ |
1552 | bdrv_write_compressed(out_bs, 0, NULL, 0); | |
ea2384d3 | 1553 | } else { |
802c3d4c PL |
1554 | int64_t sectors_to_read, sectors_read, sector_num_next_status; |
1555 | bool count_allocated_sectors; | |
11b6699a | 1556 | int has_zero_init = min_sparse ? bdrv_has_zero_init(out_bs) : 0; |
f2feebbd | 1557 | |
5a37b60a PL |
1558 | if (!has_zero_init && bdrv_can_write_zeroes_with_unmap(out_bs)) { |
1559 | ret = bdrv_make_zero(out_bs, BDRV_REQ_MAY_UNMAP); | |
1560 | if (ret < 0) { | |
1561 | goto out; | |
1562 | } | |
1563 | has_zero_init = 1; | |
1564 | } | |
1565 | ||
802c3d4c PL |
1566 | sectors_to_read = total_sectors; |
1567 | count_allocated_sectors = progress && (out_baseimg || has_zero_init); | |
1568 | restart: | |
f58c7b35 | 1569 | sector_num = 0; // total number of sectors converted so far |
802c3d4c PL |
1570 | sectors_read = 0; |
1571 | sector_num_next_status = 0; | |
6b837bc4 | 1572 | |
ea2384d3 FB |
1573 | for(;;) { |
1574 | nb_sectors = total_sectors - sector_num; | |
b8fb60da | 1575 | if (nb_sectors <= 0) { |
802c3d4c PL |
1576 | if (count_allocated_sectors) { |
1577 | sectors_to_read = sectors_read; | |
1578 | count_allocated_sectors = false; | |
1579 | goto restart; | |
1580 | } | |
13c28af8 | 1581 | ret = 0; |
ea2384d3 | 1582 | break; |
b8fb60da | 1583 | } |
926c2d23 AZ |
1584 | |
1585 | while (sector_num - bs_offset >= bs_sectors) { | |
1586 | bs_i ++; | |
1587 | assert (bs_i < bs_n); | |
1588 | bs_offset += bs_sectors; | |
1589 | bdrv_get_geometry(bs[bs_i], &bs_sectors); | |
0bfcd599 BS |
1590 | /* printf("changing part: sector_num=%" PRId64 ", bs_i=%d, " |
1591 | "bs_offset=%" PRId64 ", bs_sectors=%" PRId64 "\n", | |
926c2d23 AZ |
1592 | sector_num, bs_i, bs_offset, bs_sectors); */ |
1593 | } | |
1594 | ||
13c28af8 PL |
1595 | if ((out_baseimg || has_zero_init) && |
1596 | sector_num >= sector_num_next_status) { | |
1597 | n = nb_sectors > INT_MAX ? INT_MAX : nb_sectors; | |
1598 | ret = bdrv_get_block_status(bs[bs_i], sector_num - bs_offset, | |
1599 | n, &n1); | |
e4a86f88 | 1600 | if (ret < 0) { |
13c28af8 PL |
1601 | error_report("error while reading block status of sector %" |
1602 | PRId64 ": %s", sector_num - bs_offset, | |
1603 | strerror(-ret)); | |
e4a86f88 PB |
1604 | goto out; |
1605 | } | |
13c28af8 PL |
1606 | /* If the output image is zero initialized, we are not working |
1607 | * on a shared base and the input is zero we can skip the next | |
1608 | * n1 sectors */ | |
1609 | if (has_zero_init && !out_baseimg && (ret & BDRV_BLOCK_ZERO)) { | |
e4a86f88 PB |
1610 | sector_num += n1; |
1611 | continue; | |
93c65b47 | 1612 | } |
13c28af8 PL |
1613 | /* If the output image is being created as a copy on write |
1614 | * image, assume that sectors which are unallocated in the | |
1615 | * input image are present in both the output's and input's | |
1616 | * base images (no need to copy them). */ | |
1617 | if (out_baseimg) { | |
1618 | if (!(ret & BDRV_BLOCK_DATA)) { | |
1619 | sector_num += n1; | |
1620 | continue; | |
1621 | } | |
1622 | /* The next 'n1' sectors are allocated in the input image. | |
1623 | * Copy only those as they may be followed by unallocated | |
1624 | * sectors. */ | |
1625 | nb_sectors = n1; | |
1626 | } | |
1627 | /* avoid redundant callouts to get_block_status */ | |
1628 | sector_num_next_status = sector_num + n1; | |
f58c7b35 TS |
1629 | } |
1630 | ||
f2521c90 | 1631 | n = MIN(nb_sectors, bufsectors); |
24f833cd PL |
1632 | |
1633 | /* round down request length to an aligned sector, but | |
1634 | * do not bother doing this on short requests. They happen | |
1635 | * when we found an all-zero area, and the next sector to | |
1636 | * write will not be sector_num + n. */ | |
1637 | if (cluster_sectors > 0 && n >= cluster_sectors) { | |
1638 | int64_t next_aligned_sector = (sector_num + n); | |
1639 | next_aligned_sector -= next_aligned_sector % cluster_sectors; | |
1640 | if (sector_num + n > next_aligned_sector) { | |
1641 | n = next_aligned_sector - sector_num; | |
1642 | } | |
1643 | } | |
1644 | ||
13c28af8 | 1645 | n = MIN(n, bs_sectors - (sector_num - bs_offset)); |
13c28af8 | 1646 | |
802c3d4c PL |
1647 | sectors_read += n; |
1648 | if (count_allocated_sectors) { | |
1649 | sector_num += n; | |
1650 | continue; | |
1651 | } | |
1652 | ||
1653 | n1 = n; | |
c2abccec MK |
1654 | ret = bdrv_read(bs[bs_i], sector_num - bs_offset, buf, n); |
1655 | if (ret < 0) { | |
3fba9d81 SH |
1656 | error_report("error while reading sector %" PRId64 ": %s", |
1657 | sector_num - bs_offset, strerror(-ret)); | |
c2abccec MK |
1658 | goto out; |
1659 | } | |
ea2384d3 FB |
1660 | /* NOTE: at the same time we convert, we do not write zero |
1661 | sectors to have a chance to compress the image. Ideally, we | |
1662 | should add a specific call to have the info to go faster */ | |
1663 | buf1 = buf; | |
1664 | while (n > 0) { | |
11212d8f | 1665 | if (!has_zero_init || |
a22f123c | 1666 | is_allocated_sectors_min(buf1, n, &n1, min_sparse)) { |
c2abccec MK |
1667 | ret = bdrv_write(out_bs, sector_num, buf1, n1); |
1668 | if (ret < 0) { | |
3fba9d81 SH |
1669 | error_report("error while writing sector %" PRId64 |
1670 | ": %s", sector_num, strerror(-ret)); | |
c2abccec MK |
1671 | goto out; |
1672 | } | |
ea2384d3 FB |
1673 | } |
1674 | sector_num += n1; | |
1675 | n -= n1; | |
1676 | buf1 += n1 * 512; | |
1677 | } | |
802c3d4c | 1678 | qemu_progress_print(100.0 * sectors_read / sectors_to_read, 0); |
ea2384d3 FB |
1679 | } |
1680 | } | |
c2abccec | 1681 | out: |
13c28af8 PL |
1682 | if (!ret) { |
1683 | qemu_progress_print(100, 0); | |
1684 | } | |
6b837bc4 | 1685 | qemu_progress_end(); |
c2abccec MK |
1686 | free_option_parameters(create_options); |
1687 | free_option_parameters(param); | |
bb1c0597 | 1688 | qemu_vfree(buf); |
ef80654d WX |
1689 | if (sn_opts) { |
1690 | qemu_opts_del(sn_opts); | |
1691 | } | |
c2abccec | 1692 | if (out_bs) { |
4f6fd349 | 1693 | bdrv_unref(out_bs); |
c2abccec | 1694 | } |
31ca34b8 JS |
1695 | if (bs) { |
1696 | for (bs_i = 0; bs_i < bs_n; bs_i++) { | |
1697 | if (bs[bs_i]) { | |
4f6fd349 | 1698 | bdrv_unref(bs[bs_i]); |
31ca34b8 | 1699 | } |
c2abccec | 1700 | } |
7267c094 | 1701 | g_free(bs); |
c2abccec | 1702 | } |
64bb01aa KW |
1703 | fail_getopt: |
1704 | g_free(options); | |
1705 | ||
c2abccec MK |
1706 | if (ret) { |
1707 | return 1; | |
1708 | } | |
ea2384d3 FB |
1709 | return 0; |
1710 | } | |
1711 | ||
57d1a2b6 | 1712 | |
faea38e7 FB |
1713 | static void dump_snapshots(BlockDriverState *bs) |
1714 | { | |
1715 | QEMUSnapshotInfo *sn_tab, *sn; | |
1716 | int nb_sns, i; | |
faea38e7 FB |
1717 | |
1718 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
1719 | if (nb_sns <= 0) | |
1720 | return; | |
1721 | printf("Snapshot list:\n"); | |
5b917044 WX |
1722 | bdrv_snapshot_dump(fprintf, stdout, NULL); |
1723 | printf("\n"); | |
faea38e7 FB |
1724 | for(i = 0; i < nb_sns; i++) { |
1725 | sn = &sn_tab[i]; | |
5b917044 WX |
1726 | bdrv_snapshot_dump(fprintf, stdout, sn); |
1727 | printf("\n"); | |
faea38e7 | 1728 | } |
7267c094 | 1729 | g_free(sn_tab); |
faea38e7 FB |
1730 | } |
1731 | ||
9699bf0d SH |
1732 | static void dump_json_image_info_list(ImageInfoList *list) |
1733 | { | |
1734 | Error *errp = NULL; | |
1735 | QString *str; | |
1736 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
1737 | QObject *obj; | |
1738 | visit_type_ImageInfoList(qmp_output_get_visitor(ov), | |
1739 | &list, NULL, &errp); | |
1740 | obj = qmp_output_get_qobject(ov); | |
1741 | str = qobject_to_json_pretty(obj); | |
1742 | assert(str != NULL); | |
1743 | printf("%s\n", qstring_get_str(str)); | |
1744 | qobject_decref(obj); | |
1745 | qmp_output_visitor_cleanup(ov); | |
1746 | QDECREF(str); | |
1747 | } | |
1748 | ||
c054b3fd BC |
1749 | static void dump_json_image_info(ImageInfo *info) |
1750 | { | |
1751 | Error *errp = NULL; | |
1752 | QString *str; | |
1753 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
1754 | QObject *obj; | |
1755 | visit_type_ImageInfo(qmp_output_get_visitor(ov), | |
1756 | &info, NULL, &errp); | |
1757 | obj = qmp_output_get_qobject(ov); | |
1758 | str = qobject_to_json_pretty(obj); | |
1759 | assert(str != NULL); | |
1760 | printf("%s\n", qstring_get_str(str)); | |
1761 | qobject_decref(obj); | |
1762 | qmp_output_visitor_cleanup(ov); | |
1763 | QDECREF(str); | |
1764 | } | |
1765 | ||
9699bf0d SH |
1766 | static void dump_human_image_info_list(ImageInfoList *list) |
1767 | { | |
1768 | ImageInfoList *elem; | |
1769 | bool delim = false; | |
1770 | ||
1771 | for (elem = list; elem; elem = elem->next) { | |
1772 | if (delim) { | |
1773 | printf("\n"); | |
1774 | } | |
1775 | delim = true; | |
1776 | ||
5b917044 | 1777 | bdrv_image_info_dump(fprintf, stdout, elem->value); |
9699bf0d SH |
1778 | } |
1779 | } | |
1780 | ||
1781 | static gboolean str_equal_func(gconstpointer a, gconstpointer b) | |
1782 | { | |
1783 | return strcmp(a, b) == 0; | |
1784 | } | |
1785 | ||
1786 | /** | |
1787 | * Open an image file chain and return an ImageInfoList | |
1788 | * | |
1789 | * @filename: topmost image filename | |
1790 | * @fmt: topmost image format (may be NULL to autodetect) | |
1791 | * @chain: true - enumerate entire backing file chain | |
1792 | * false - only topmost image file | |
1793 | * | |
1794 | * Returns a list of ImageInfo objects or NULL if there was an error opening an | |
1795 | * image file. If there was an error a message will have been printed to | |
1796 | * stderr. | |
1797 | */ | |
1798 | static ImageInfoList *collect_image_info_list(const char *filename, | |
1799 | const char *fmt, | |
1800 | bool chain) | |
1801 | { | |
1802 | ImageInfoList *head = NULL; | |
1803 | ImageInfoList **last = &head; | |
1804 | GHashTable *filenames; | |
43526ec8 | 1805 | Error *err = NULL; |
9699bf0d SH |
1806 | |
1807 | filenames = g_hash_table_new_full(g_str_hash, str_equal_func, NULL, NULL); | |
1808 | ||
1809 | while (filename) { | |
1810 | BlockDriverState *bs; | |
1811 | ImageInfo *info; | |
1812 | ImageInfoList *elem; | |
1813 | ||
1814 | if (g_hash_table_lookup_extended(filenames, filename, NULL, NULL)) { | |
1815 | error_report("Backing file '%s' creates an infinite loop.", | |
1816 | filename); | |
1817 | goto err; | |
1818 | } | |
1819 | g_hash_table_insert(filenames, (gpointer)filename, NULL); | |
1820 | ||
9ffe3332 KW |
1821 | bs = bdrv_new_open("image", filename, fmt, |
1822 | BDRV_O_FLAGS | BDRV_O_NO_BACKING, false, false); | |
9699bf0d SH |
1823 | if (!bs) { |
1824 | goto err; | |
1825 | } | |
1826 | ||
43526ec8 | 1827 | bdrv_query_image_info(bs, &info, &err); |
84d18f06 | 1828 | if (err) { |
43526ec8 WX |
1829 | error_report("%s", error_get_pretty(err)); |
1830 | error_free(err); | |
bdf866fe | 1831 | bdrv_unref(bs); |
43526ec8 | 1832 | goto err; |
fb0ed453 | 1833 | } |
9699bf0d SH |
1834 | |
1835 | elem = g_new0(ImageInfoList, 1); | |
1836 | elem->value = info; | |
1837 | *last = elem; | |
1838 | last = &elem->next; | |
1839 | ||
4f6fd349 | 1840 | bdrv_unref(bs); |
9699bf0d SH |
1841 | |
1842 | filename = fmt = NULL; | |
1843 | if (chain) { | |
1844 | if (info->has_full_backing_filename) { | |
1845 | filename = info->full_backing_filename; | |
1846 | } else if (info->has_backing_filename) { | |
1847 | filename = info->backing_filename; | |
1848 | } | |
1849 | if (info->has_backing_filename_format) { | |
1850 | fmt = info->backing_filename_format; | |
1851 | } | |
1852 | } | |
1853 | } | |
1854 | g_hash_table_destroy(filenames); | |
1855 | return head; | |
1856 | ||
1857 | err: | |
1858 | qapi_free_ImageInfoList(head); | |
1859 | g_hash_table_destroy(filenames); | |
1860 | return NULL; | |
1861 | } | |
1862 | ||
c054b3fd BC |
1863 | static int img_info(int argc, char **argv) |
1864 | { | |
1865 | int c; | |
1866 | OutputFormat output_format = OFORMAT_HUMAN; | |
9699bf0d | 1867 | bool chain = false; |
c054b3fd | 1868 | const char *filename, *fmt, *output; |
9699bf0d | 1869 | ImageInfoList *list; |
c054b3fd | 1870 | |
ea2384d3 | 1871 | fmt = NULL; |
c054b3fd | 1872 | output = NULL; |
ea2384d3 | 1873 | for(;;) { |
c054b3fd BC |
1874 | int option_index = 0; |
1875 | static const struct option long_options[] = { | |
1876 | {"help", no_argument, 0, 'h'}, | |
1877 | {"format", required_argument, 0, 'f'}, | |
1878 | {"output", required_argument, 0, OPTION_OUTPUT}, | |
9699bf0d | 1879 | {"backing-chain", no_argument, 0, OPTION_BACKING_CHAIN}, |
c054b3fd BC |
1880 | {0, 0, 0, 0} |
1881 | }; | |
1882 | c = getopt_long(argc, argv, "f:h", | |
1883 | long_options, &option_index); | |
b8fb60da | 1884 | if (c == -1) { |
ea2384d3 | 1885 | break; |
b8fb60da | 1886 | } |
ea2384d3 | 1887 | switch(c) { |
ef87394c | 1888 | case '?': |
ea2384d3 FB |
1889 | case 'h': |
1890 | help(); | |
1891 | break; | |
1892 | case 'f': | |
1893 | fmt = optarg; | |
1894 | break; | |
c054b3fd BC |
1895 | case OPTION_OUTPUT: |
1896 | output = optarg; | |
1897 | break; | |
9699bf0d SH |
1898 | case OPTION_BACKING_CHAIN: |
1899 | chain = true; | |
1900 | break; | |
ea2384d3 FB |
1901 | } |
1902 | } | |
fc11eb26 | 1903 | if (optind != argc - 1) { |
ac1307ab | 1904 | error_exit("Expecting one image file name"); |
b8fb60da | 1905 | } |
ea2384d3 FB |
1906 | filename = argv[optind++]; |
1907 | ||
c054b3fd BC |
1908 | if (output && !strcmp(output, "json")) { |
1909 | output_format = OFORMAT_JSON; | |
1910 | } else if (output && !strcmp(output, "human")) { | |
1911 | output_format = OFORMAT_HUMAN; | |
1912 | } else if (output) { | |
1913 | error_report("--output must be used with human or json as argument."); | |
c2abccec MK |
1914 | return 1; |
1915 | } | |
c054b3fd | 1916 | |
9699bf0d SH |
1917 | list = collect_image_info_list(filename, fmt, chain); |
1918 | if (!list) { | |
c2abccec | 1919 | return 1; |
faea38e7 | 1920 | } |
c054b3fd | 1921 | |
c054b3fd BC |
1922 | switch (output_format) { |
1923 | case OFORMAT_HUMAN: | |
9699bf0d | 1924 | dump_human_image_info_list(list); |
c054b3fd BC |
1925 | break; |
1926 | case OFORMAT_JSON: | |
9699bf0d SH |
1927 | if (chain) { |
1928 | dump_json_image_info_list(list); | |
1929 | } else { | |
1930 | dump_json_image_info(list->value); | |
1931 | } | |
c054b3fd | 1932 | break; |
faea38e7 | 1933 | } |
c054b3fd | 1934 | |
9699bf0d | 1935 | qapi_free_ImageInfoList(list); |
ea2384d3 FB |
1936 | return 0; |
1937 | } | |
1938 | ||
4c93a13b PB |
1939 | |
1940 | typedef struct MapEntry { | |
1941 | int flags; | |
1942 | int depth; | |
1943 | int64_t start; | |
1944 | int64_t length; | |
1945 | int64_t offset; | |
1946 | BlockDriverState *bs; | |
1947 | } MapEntry; | |
1948 | ||
1949 | static void dump_map_entry(OutputFormat output_format, MapEntry *e, | |
1950 | MapEntry *next) | |
1951 | { | |
1952 | switch (output_format) { | |
1953 | case OFORMAT_HUMAN: | |
1954 | if ((e->flags & BDRV_BLOCK_DATA) && | |
1955 | !(e->flags & BDRV_BLOCK_OFFSET_VALID)) { | |
1956 | error_report("File contains external, encrypted or compressed clusters."); | |
1957 | exit(1); | |
1958 | } | |
1959 | if ((e->flags & (BDRV_BLOCK_DATA|BDRV_BLOCK_ZERO)) == BDRV_BLOCK_DATA) { | |
1960 | printf("%#-16"PRIx64"%#-16"PRIx64"%#-16"PRIx64"%s\n", | |
1961 | e->start, e->length, e->offset, e->bs->filename); | |
1962 | } | |
1963 | /* This format ignores the distinction between 0, ZERO and ZERO|DATA. | |
1964 | * Modify the flags here to allow more coalescing. | |
1965 | */ | |
1966 | if (next && | |
1967 | (next->flags & (BDRV_BLOCK_DATA|BDRV_BLOCK_ZERO)) != BDRV_BLOCK_DATA) { | |
1968 | next->flags &= ~BDRV_BLOCK_DATA; | |
1969 | next->flags |= BDRV_BLOCK_ZERO; | |
1970 | } | |
1971 | break; | |
1972 | case OFORMAT_JSON: | |
1973 | printf("%s{ \"start\": %"PRId64", \"length\": %"PRId64", \"depth\": %d," | |
1974 | " \"zero\": %s, \"data\": %s", | |
1975 | (e->start == 0 ? "[" : ",\n"), | |
1976 | e->start, e->length, e->depth, | |
1977 | (e->flags & BDRV_BLOCK_ZERO) ? "true" : "false", | |
1978 | (e->flags & BDRV_BLOCK_DATA) ? "true" : "false"); | |
1979 | if (e->flags & BDRV_BLOCK_OFFSET_VALID) { | |
c745bfb4 | 1980 | printf(", \"offset\": %"PRId64"", e->offset); |
4c93a13b PB |
1981 | } |
1982 | putchar('}'); | |
1983 | ||
1984 | if (!next) { | |
1985 | printf("]\n"); | |
1986 | } | |
1987 | break; | |
1988 | } | |
1989 | } | |
1990 | ||
1991 | static int get_block_status(BlockDriverState *bs, int64_t sector_num, | |
1992 | int nb_sectors, MapEntry *e) | |
1993 | { | |
1994 | int64_t ret; | |
1995 | int depth; | |
1996 | ||
1997 | /* As an optimization, we could cache the current range of unallocated | |
1998 | * clusters in each file of the chain, and avoid querying the same | |
1999 | * range repeatedly. | |
2000 | */ | |
2001 | ||
2002 | depth = 0; | |
2003 | for (;;) { | |
2004 | ret = bdrv_get_block_status(bs, sector_num, nb_sectors, &nb_sectors); | |
2005 | if (ret < 0) { | |
2006 | return ret; | |
2007 | } | |
2008 | assert(nb_sectors); | |
2009 | if (ret & (BDRV_BLOCK_ZERO|BDRV_BLOCK_DATA)) { | |
2010 | break; | |
2011 | } | |
2012 | bs = bs->backing_hd; | |
2013 | if (bs == NULL) { | |
2014 | ret = 0; | |
2015 | break; | |
2016 | } | |
2017 | ||
2018 | depth++; | |
2019 | } | |
2020 | ||
2021 | e->start = sector_num * BDRV_SECTOR_SIZE; | |
2022 | e->length = nb_sectors * BDRV_SECTOR_SIZE; | |
2023 | e->flags = ret & ~BDRV_BLOCK_OFFSET_MASK; | |
2024 | e->offset = ret & BDRV_BLOCK_OFFSET_MASK; | |
2025 | e->depth = depth; | |
2026 | e->bs = bs; | |
2027 | return 0; | |
2028 | } | |
2029 | ||
2030 | static int img_map(int argc, char **argv) | |
2031 | { | |
2032 | int c; | |
2033 | OutputFormat output_format = OFORMAT_HUMAN; | |
2034 | BlockDriverState *bs; | |
2035 | const char *filename, *fmt, *output; | |
2036 | int64_t length; | |
2037 | MapEntry curr = { .length = 0 }, next; | |
2038 | int ret = 0; | |
2039 | ||
2040 | fmt = NULL; | |
2041 | output = NULL; | |
2042 | for (;;) { | |
2043 | int option_index = 0; | |
2044 | static const struct option long_options[] = { | |
2045 | {"help", no_argument, 0, 'h'}, | |
2046 | {"format", required_argument, 0, 'f'}, | |
2047 | {"output", required_argument, 0, OPTION_OUTPUT}, | |
2048 | {0, 0, 0, 0} | |
2049 | }; | |
2050 | c = getopt_long(argc, argv, "f:h", | |
2051 | long_options, &option_index); | |
2052 | if (c == -1) { | |
2053 | break; | |
2054 | } | |
2055 | switch (c) { | |
2056 | case '?': | |
2057 | case 'h': | |
2058 | help(); | |
2059 | break; | |
2060 | case 'f': | |
2061 | fmt = optarg; | |
2062 | break; | |
2063 | case OPTION_OUTPUT: | |
2064 | output = optarg; | |
2065 | break; | |
2066 | } | |
2067 | } | |
ac1307ab FZ |
2068 | if (optind != argc - 1) { |
2069 | error_exit("Expecting one image file name"); | |
4c93a13b | 2070 | } |
ac1307ab | 2071 | filename = argv[optind]; |
4c93a13b PB |
2072 | |
2073 | if (output && !strcmp(output, "json")) { | |
2074 | output_format = OFORMAT_JSON; | |
2075 | } else if (output && !strcmp(output, "human")) { | |
2076 | output_format = OFORMAT_HUMAN; | |
2077 | } else if (output) { | |
2078 | error_report("--output must be used with human or json as argument."); | |
2079 | return 1; | |
2080 | } | |
2081 | ||
9ffe3332 | 2082 | bs = bdrv_new_open("image", filename, fmt, BDRV_O_FLAGS, true, false); |
4c93a13b PB |
2083 | if (!bs) { |
2084 | return 1; | |
2085 | } | |
2086 | ||
2087 | if (output_format == OFORMAT_HUMAN) { | |
2088 | printf("%-16s%-16s%-16s%s\n", "Offset", "Length", "Mapped to", "File"); | |
2089 | } | |
2090 | ||
2091 | length = bdrv_getlength(bs); | |
2092 | while (curr.start + curr.length < length) { | |
2093 | int64_t nsectors_left; | |
2094 | int64_t sector_num; | |
2095 | int n; | |
2096 | ||
2097 | sector_num = (curr.start + curr.length) >> BDRV_SECTOR_BITS; | |
2098 | ||
2099 | /* Probe up to 1 GiB at a time. */ | |
2100 | nsectors_left = DIV_ROUND_UP(length, BDRV_SECTOR_SIZE) - sector_num; | |
2101 | n = MIN(1 << (30 - BDRV_SECTOR_BITS), nsectors_left); | |
2102 | ret = get_block_status(bs, sector_num, n, &next); | |
2103 | ||
2104 | if (ret < 0) { | |
2105 | error_report("Could not read file metadata: %s", strerror(-ret)); | |
2106 | goto out; | |
2107 | } | |
2108 | ||
2109 | if (curr.length != 0 && curr.flags == next.flags && | |
2110 | curr.depth == next.depth && | |
2111 | ((curr.flags & BDRV_BLOCK_OFFSET_VALID) == 0 || | |
2112 | curr.offset + curr.length == next.offset)) { | |
2113 | curr.length += next.length; | |
2114 | continue; | |
2115 | } | |
2116 | ||
2117 | if (curr.length > 0) { | |
2118 | dump_map_entry(output_format, &curr, &next); | |
2119 | } | |
2120 | curr = next; | |
2121 | } | |
2122 | ||
2123 | dump_map_entry(output_format, &curr, NULL); | |
2124 | ||
2125 | out: | |
2126 | bdrv_unref(bs); | |
2127 | return ret < 0; | |
2128 | } | |
2129 | ||
f7b4a940 AL |
2130 | #define SNAPSHOT_LIST 1 |
2131 | #define SNAPSHOT_CREATE 2 | |
2132 | #define SNAPSHOT_APPLY 3 | |
2133 | #define SNAPSHOT_DELETE 4 | |
2134 | ||
153859be | 2135 | static int img_snapshot(int argc, char **argv) |
f7b4a940 AL |
2136 | { |
2137 | BlockDriverState *bs; | |
2138 | QEMUSnapshotInfo sn; | |
2139 | char *filename, *snapshot_name = NULL; | |
c2abccec | 2140 | int c, ret = 0, bdrv_oflags; |
f7b4a940 AL |
2141 | int action = 0; |
2142 | qemu_timeval tv; | |
f382d43a | 2143 | bool quiet = false; |
a89d89d3 | 2144 | Error *err = NULL; |
f7b4a940 | 2145 | |
710da702 | 2146 | bdrv_oflags = BDRV_O_FLAGS | BDRV_O_RDWR; |
f7b4a940 AL |
2147 | /* Parse commandline parameters */ |
2148 | for(;;) { | |
f382d43a | 2149 | c = getopt(argc, argv, "la:c:d:hq"); |
b8fb60da | 2150 | if (c == -1) { |
f7b4a940 | 2151 | break; |
b8fb60da | 2152 | } |
f7b4a940 | 2153 | switch(c) { |
ef87394c | 2154 | case '?': |
f7b4a940 AL |
2155 | case 'h': |
2156 | help(); | |
153859be | 2157 | return 0; |
f7b4a940 AL |
2158 | case 'l': |
2159 | if (action) { | |
ac1307ab | 2160 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2161 | return 0; |
f7b4a940 AL |
2162 | } |
2163 | action = SNAPSHOT_LIST; | |
f5edb014 | 2164 | bdrv_oflags &= ~BDRV_O_RDWR; /* no need for RW */ |
f7b4a940 AL |
2165 | break; |
2166 | case 'a': | |
2167 | if (action) { | |
ac1307ab | 2168 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2169 | return 0; |
f7b4a940 AL |
2170 | } |
2171 | action = SNAPSHOT_APPLY; | |
2172 | snapshot_name = optarg; | |
2173 | break; | |
2174 | case 'c': | |
2175 | if (action) { | |
ac1307ab | 2176 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2177 | return 0; |
f7b4a940 AL |
2178 | } |
2179 | action = SNAPSHOT_CREATE; | |
2180 | snapshot_name = optarg; | |
2181 | break; | |
2182 | case 'd': | |
2183 | if (action) { | |
ac1307ab | 2184 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2185 | return 0; |
f7b4a940 AL |
2186 | } |
2187 | action = SNAPSHOT_DELETE; | |
2188 | snapshot_name = optarg; | |
2189 | break; | |
f382d43a MR |
2190 | case 'q': |
2191 | quiet = true; | |
2192 | break; | |
f7b4a940 AL |
2193 | } |
2194 | } | |
2195 | ||
fc11eb26 | 2196 | if (optind != argc - 1) { |
ac1307ab | 2197 | error_exit("Expecting one image file name"); |
b8fb60da | 2198 | } |
f7b4a940 AL |
2199 | filename = argv[optind++]; |
2200 | ||
2201 | /* Open the image */ | |
9ffe3332 | 2202 | bs = bdrv_new_open("image", filename, NULL, bdrv_oflags, true, quiet); |
c2abccec MK |
2203 | if (!bs) { |
2204 | return 1; | |
2205 | } | |
f7b4a940 AL |
2206 | |
2207 | /* Perform the requested action */ | |
2208 | switch(action) { | |
2209 | case SNAPSHOT_LIST: | |
2210 | dump_snapshots(bs); | |
2211 | break; | |
2212 | ||
2213 | case SNAPSHOT_CREATE: | |
2214 | memset(&sn, 0, sizeof(sn)); | |
2215 | pstrcpy(sn.name, sizeof(sn.name), snapshot_name); | |
2216 | ||
2217 | qemu_gettimeofday(&tv); | |
2218 | sn.date_sec = tv.tv_sec; | |
2219 | sn.date_nsec = tv.tv_usec * 1000; | |
2220 | ||
2221 | ret = bdrv_snapshot_create(bs, &sn); | |
b8fb60da | 2222 | if (ret) { |
15654a6d | 2223 | error_report("Could not create snapshot '%s': %d (%s)", |
f7b4a940 | 2224 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 2225 | } |
f7b4a940 AL |
2226 | break; |
2227 | ||
2228 | case SNAPSHOT_APPLY: | |
2229 | ret = bdrv_snapshot_goto(bs, snapshot_name); | |
b8fb60da | 2230 | if (ret) { |
15654a6d | 2231 | error_report("Could not apply snapshot '%s': %d (%s)", |
f7b4a940 | 2232 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 2233 | } |
f7b4a940 AL |
2234 | break; |
2235 | ||
2236 | case SNAPSHOT_DELETE: | |
a89d89d3 | 2237 | bdrv_snapshot_delete_by_id_or_name(bs, snapshot_name, &err); |
84d18f06 | 2238 | if (err) { |
a89d89d3 WX |
2239 | error_report("Could not delete snapshot '%s': (%s)", |
2240 | snapshot_name, error_get_pretty(err)); | |
2241 | error_free(err); | |
2242 | ret = 1; | |
b8fb60da | 2243 | } |
f7b4a940 AL |
2244 | break; |
2245 | } | |
2246 | ||
2247 | /* Cleanup */ | |
4f6fd349 | 2248 | bdrv_unref(bs); |
c2abccec MK |
2249 | if (ret) { |
2250 | return 1; | |
2251 | } | |
153859be | 2252 | return 0; |
f7b4a940 AL |
2253 | } |
2254 | ||
3e85c6fd KW |
2255 | static int img_rebase(int argc, char **argv) |
2256 | { | |
c2abccec | 2257 | BlockDriverState *bs, *bs_old_backing = NULL, *bs_new_backing = NULL; |
f163d073 | 2258 | BlockDriver *old_backing_drv, *new_backing_drv; |
3e85c6fd | 2259 | char *filename; |
661a0f71 | 2260 | const char *fmt, *cache, *out_basefmt, *out_baseimg; |
3e85c6fd KW |
2261 | int c, flags, ret; |
2262 | int unsafe = 0; | |
6b837bc4 | 2263 | int progress = 0; |
f382d43a | 2264 | bool quiet = false; |
34b5d2c6 | 2265 | Error *local_err = NULL; |
3e85c6fd KW |
2266 | |
2267 | /* Parse commandline parameters */ | |
e53dbee0 | 2268 | fmt = NULL; |
661a0f71 | 2269 | cache = BDRV_DEFAULT_CACHE; |
3e85c6fd KW |
2270 | out_baseimg = NULL; |
2271 | out_basefmt = NULL; | |
3e85c6fd | 2272 | for(;;) { |
f382d43a | 2273 | c = getopt(argc, argv, "uhf:F:b:pt:q"); |
b8fb60da | 2274 | if (c == -1) { |
3e85c6fd | 2275 | break; |
b8fb60da | 2276 | } |
3e85c6fd | 2277 | switch(c) { |
ef87394c | 2278 | case '?': |
3e85c6fd KW |
2279 | case 'h': |
2280 | help(); | |
2281 | return 0; | |
e53dbee0 KW |
2282 | case 'f': |
2283 | fmt = optarg; | |
2284 | break; | |
3e85c6fd KW |
2285 | case 'F': |
2286 | out_basefmt = optarg; | |
2287 | break; | |
2288 | case 'b': | |
2289 | out_baseimg = optarg; | |
2290 | break; | |
2291 | case 'u': | |
2292 | unsafe = 1; | |
2293 | break; | |
6b837bc4 JS |
2294 | case 'p': |
2295 | progress = 1; | |
2296 | break; | |
661a0f71 FS |
2297 | case 't': |
2298 | cache = optarg; | |
2299 | break; | |
f382d43a MR |
2300 | case 'q': |
2301 | quiet = true; | |
2302 | break; | |
3e85c6fd KW |
2303 | } |
2304 | } | |
2305 | ||
f382d43a MR |
2306 | if (quiet) { |
2307 | progress = 0; | |
2308 | } | |
2309 | ||
ac1307ab FZ |
2310 | if (optind != argc - 1) { |
2311 | error_exit("Expecting one image file name"); | |
2312 | } | |
2313 | if (!unsafe && !out_baseimg) { | |
2314 | error_exit("Must specify backing file (-b) or use unsafe mode (-u)"); | |
b8fb60da | 2315 | } |
3e85c6fd KW |
2316 | filename = argv[optind++]; |
2317 | ||
6b837bc4 JS |
2318 | qemu_progress_init(progress, 2.0); |
2319 | qemu_progress_print(0, 100); | |
2320 | ||
661a0f71 | 2321 | flags = BDRV_O_RDWR | (unsafe ? BDRV_O_NO_BACKING : 0); |
c3993cdc | 2322 | ret = bdrv_parse_cache_flags(cache, &flags); |
661a0f71 FS |
2323 | if (ret < 0) { |
2324 | error_report("Invalid cache option: %s", cache); | |
2325 | return -1; | |
2326 | } | |
2327 | ||
3e85c6fd KW |
2328 | /* |
2329 | * Open the images. | |
2330 | * | |
2331 | * Ignore the old backing file for unsafe rebase in case we want to correct | |
2332 | * the reference to a renamed or moved backing file. | |
2333 | */ | |
9ffe3332 | 2334 | bs = bdrv_new_open("image", filename, fmt, flags, true, quiet); |
c2abccec MK |
2335 | if (!bs) { |
2336 | return 1; | |
2337 | } | |
3e85c6fd KW |
2338 | |
2339 | /* Find the right drivers for the backing files */ | |
2340 | old_backing_drv = NULL; | |
2341 | new_backing_drv = NULL; | |
2342 | ||
2343 | if (!unsafe && bs->backing_format[0] != '\0') { | |
2344 | old_backing_drv = bdrv_find_format(bs->backing_format); | |
2345 | if (old_backing_drv == NULL) { | |
15654a6d | 2346 | error_report("Invalid format name: '%s'", bs->backing_format); |
c2abccec MK |
2347 | ret = -1; |
2348 | goto out; | |
3e85c6fd KW |
2349 | } |
2350 | } | |
2351 | ||
2352 | if (out_basefmt != NULL) { | |
2353 | new_backing_drv = bdrv_find_format(out_basefmt); | |
2354 | if (new_backing_drv == NULL) { | |
15654a6d | 2355 | error_report("Invalid format name: '%s'", out_basefmt); |
c2abccec MK |
2356 | ret = -1; |
2357 | goto out; | |
3e85c6fd KW |
2358 | } |
2359 | } | |
2360 | ||
2361 | /* For safe rebasing we need to compare old and new backing file */ | |
2362 | if (unsafe) { | |
2363 | /* Make the compiler happy */ | |
2364 | bs_old_backing = NULL; | |
2365 | bs_new_backing = NULL; | |
2366 | } else { | |
2367 | char backing_name[1024]; | |
2368 | ||
98522f63 | 2369 | bs_old_backing = bdrv_new("old_backing", &error_abort); |
3e85c6fd | 2370 | bdrv_get_backing_filename(bs, backing_name, sizeof(backing_name)); |
ddf5636d | 2371 | ret = bdrv_open(&bs_old_backing, backing_name, NULL, NULL, BDRV_O_FLAGS, |
34b5d2c6 | 2372 | old_backing_drv, &local_err); |
c2abccec | 2373 | if (ret) { |
34b5d2c6 HR |
2374 | error_report("Could not open old backing file '%s': %s", |
2375 | backing_name, error_get_pretty(local_err)); | |
2376 | error_free(local_err); | |
c2abccec | 2377 | goto out; |
3e85c6fd | 2378 | } |
a616673d | 2379 | if (out_baseimg[0]) { |
98522f63 | 2380 | bs_new_backing = bdrv_new("new_backing", &error_abort); |
ddf5636d HR |
2381 | ret = bdrv_open(&bs_new_backing, out_baseimg, NULL, NULL, |
2382 | BDRV_O_FLAGS, new_backing_drv, &local_err); | |
a616673d | 2383 | if (ret) { |
34b5d2c6 HR |
2384 | error_report("Could not open new backing file '%s': %s", |
2385 | out_baseimg, error_get_pretty(local_err)); | |
2386 | error_free(local_err); | |
a616673d AB |
2387 | goto out; |
2388 | } | |
3e85c6fd KW |
2389 | } |
2390 | } | |
2391 | ||
2392 | /* | |
2393 | * Check each unallocated cluster in the COW file. If it is unallocated, | |
2394 | * accesses go to the backing file. We must therefore compare this cluster | |
2395 | * in the old and new backing file, and if they differ we need to copy it | |
2396 | * from the old backing file into the COW file. | |
2397 | * | |
2398 | * If qemu-img crashes during this step, no harm is done. The content of | |
2399 | * the image is the same as the original one at any time. | |
2400 | */ | |
2401 | if (!unsafe) { | |
2402 | uint64_t num_sectors; | |
87a1b3e3 | 2403 | uint64_t old_backing_num_sectors; |
a616673d | 2404 | uint64_t new_backing_num_sectors = 0; |
3e85c6fd | 2405 | uint64_t sector; |
cc60e327 | 2406 | int n; |
d6771bfa T |
2407 | uint8_t * buf_old; |
2408 | uint8_t * buf_new; | |
1f710495 | 2409 | float local_progress = 0; |
d6771bfa | 2410 | |
bb1c0597 KW |
2411 | buf_old = qemu_blockalign(bs, IO_BUF_SIZE); |
2412 | buf_new = qemu_blockalign(bs, IO_BUF_SIZE); | |
3e85c6fd KW |
2413 | |
2414 | bdrv_get_geometry(bs, &num_sectors); | |
87a1b3e3 | 2415 | bdrv_get_geometry(bs_old_backing, &old_backing_num_sectors); |
a616673d AB |
2416 | if (bs_new_backing) { |
2417 | bdrv_get_geometry(bs_new_backing, &new_backing_num_sectors); | |
2418 | } | |
3e85c6fd | 2419 | |
1f710495 KW |
2420 | if (num_sectors != 0) { |
2421 | local_progress = (float)100 / | |
2422 | (num_sectors / MIN(num_sectors, IO_BUF_SIZE / 512)); | |
2423 | } | |
2424 | ||
3e85c6fd KW |
2425 | for (sector = 0; sector < num_sectors; sector += n) { |
2426 | ||
2427 | /* How many sectors can we handle with the next read? */ | |
2428 | if (sector + (IO_BUF_SIZE / 512) <= num_sectors) { | |
2429 | n = (IO_BUF_SIZE / 512); | |
2430 | } else { | |
2431 | n = num_sectors - sector; | |
2432 | } | |
2433 | ||
2434 | /* If the cluster is allocated, we don't need to take action */ | |
cc60e327 | 2435 | ret = bdrv_is_allocated(bs, sector, n, &n); |
d663640c PB |
2436 | if (ret < 0) { |
2437 | error_report("error while reading image metadata: %s", | |
2438 | strerror(-ret)); | |
2439 | goto out; | |
2440 | } | |
cc60e327 | 2441 | if (ret) { |
3e85c6fd KW |
2442 | continue; |
2443 | } | |
2444 | ||
87a1b3e3 KW |
2445 | /* |
2446 | * Read old and new backing file and take into consideration that | |
2447 | * backing files may be smaller than the COW image. | |
2448 | */ | |
2449 | if (sector >= old_backing_num_sectors) { | |
2450 | memset(buf_old, 0, n * BDRV_SECTOR_SIZE); | |
2451 | } else { | |
2452 | if (sector + n > old_backing_num_sectors) { | |
2453 | n = old_backing_num_sectors - sector; | |
2454 | } | |
2455 | ||
2456 | ret = bdrv_read(bs_old_backing, sector, buf_old, n); | |
2457 | if (ret < 0) { | |
2458 | error_report("error while reading from old backing file"); | |
2459 | goto out; | |
2460 | } | |
3e85c6fd | 2461 | } |
87a1b3e3 | 2462 | |
a616673d | 2463 | if (sector >= new_backing_num_sectors || !bs_new_backing) { |
87a1b3e3 KW |
2464 | memset(buf_new, 0, n * BDRV_SECTOR_SIZE); |
2465 | } else { | |
2466 | if (sector + n > new_backing_num_sectors) { | |
2467 | n = new_backing_num_sectors - sector; | |
2468 | } | |
2469 | ||
2470 | ret = bdrv_read(bs_new_backing, sector, buf_new, n); | |
2471 | if (ret < 0) { | |
2472 | error_report("error while reading from new backing file"); | |
2473 | goto out; | |
2474 | } | |
3e85c6fd KW |
2475 | } |
2476 | ||
2477 | /* If they differ, we need to write to the COW file */ | |
2478 | uint64_t written = 0; | |
2479 | ||
2480 | while (written < n) { | |
2481 | int pnum; | |
2482 | ||
2483 | if (compare_sectors(buf_old + written * 512, | |
60b1bd4f | 2484 | buf_new + written * 512, n - written, &pnum)) |
3e85c6fd KW |
2485 | { |
2486 | ret = bdrv_write(bs, sector + written, | |
2487 | buf_old + written * 512, pnum); | |
2488 | if (ret < 0) { | |
15654a6d | 2489 | error_report("Error while writing to COW image: %s", |
3e85c6fd | 2490 | strerror(-ret)); |
c2abccec | 2491 | goto out; |
3e85c6fd KW |
2492 | } |
2493 | } | |
2494 | ||
2495 | written += pnum; | |
2496 | } | |
6b837bc4 | 2497 | qemu_progress_print(local_progress, 100); |
3e85c6fd | 2498 | } |
d6771bfa | 2499 | |
bb1c0597 KW |
2500 | qemu_vfree(buf_old); |
2501 | qemu_vfree(buf_new); | |
3e85c6fd KW |
2502 | } |
2503 | ||
2504 | /* | |
2505 | * Change the backing file. All clusters that are different from the old | |
2506 | * backing file are overwritten in the COW file now, so the visible content | |
2507 | * doesn't change when we switch the backing file. | |
2508 | */ | |
a616673d AB |
2509 | if (out_baseimg && *out_baseimg) { |
2510 | ret = bdrv_change_backing_file(bs, out_baseimg, out_basefmt); | |
2511 | } else { | |
2512 | ret = bdrv_change_backing_file(bs, NULL, NULL); | |
2513 | } | |
2514 | ||
3e85c6fd | 2515 | if (ret == -ENOSPC) { |
15654a6d JS |
2516 | error_report("Could not change the backing file to '%s': No " |
2517 | "space left in the file header", out_baseimg); | |
3e85c6fd | 2518 | } else if (ret < 0) { |
15654a6d | 2519 | error_report("Could not change the backing file to '%s': %s", |
3e85c6fd KW |
2520 | out_baseimg, strerror(-ret)); |
2521 | } | |
2522 | ||
6b837bc4 | 2523 | qemu_progress_print(100, 0); |
3e85c6fd KW |
2524 | /* |
2525 | * TODO At this point it is possible to check if any clusters that are | |
2526 | * allocated in the COW file are the same in the backing file. If so, they | |
2527 | * could be dropped from the COW file. Don't do this before switching the | |
2528 | * backing file, in case of a crash this would lead to corruption. | |
2529 | */ | |
c2abccec | 2530 | out: |
6b837bc4 | 2531 | qemu_progress_end(); |
3e85c6fd KW |
2532 | /* Cleanup */ |
2533 | if (!unsafe) { | |
eb863add | 2534 | if (bs_old_backing != NULL) { |
4f6fd349 | 2535 | bdrv_unref(bs_old_backing); |
eb863add KW |
2536 | } |
2537 | if (bs_new_backing != NULL) { | |
4f6fd349 | 2538 | bdrv_unref(bs_new_backing); |
eb863add | 2539 | } |
3e85c6fd KW |
2540 | } |
2541 | ||
4f6fd349 | 2542 | bdrv_unref(bs); |
c2abccec MK |
2543 | if (ret) { |
2544 | return 1; | |
2545 | } | |
3e85c6fd KW |
2546 | return 0; |
2547 | } | |
2548 | ||
ae6b0ed6 SH |
2549 | static int img_resize(int argc, char **argv) |
2550 | { | |
2551 | int c, ret, relative; | |
2552 | const char *filename, *fmt, *size; | |
2553 | int64_t n, total_size; | |
f382d43a | 2554 | bool quiet = false; |
2a81998a | 2555 | BlockDriverState *bs = NULL; |
20caf0f7 DXW |
2556 | QemuOpts *param; |
2557 | static QemuOptsList resize_options = { | |
2558 | .name = "resize_options", | |
2559 | .head = QTAILQ_HEAD_INITIALIZER(resize_options.head), | |
2560 | .desc = { | |
2561 | { | |
2562 | .name = BLOCK_OPT_SIZE, | |
2563 | .type = QEMU_OPT_SIZE, | |
2564 | .help = "Virtual disk size" | |
2565 | }, { | |
2566 | /* end of list */ | |
2567 | } | |
ae6b0ed6 | 2568 | }, |
ae6b0ed6 SH |
2569 | }; |
2570 | ||
e80fec7f KW |
2571 | /* Remove size from argv manually so that negative numbers are not treated |
2572 | * as options by getopt. */ | |
2573 | if (argc < 3) { | |
ac1307ab | 2574 | error_exit("Not enough arguments"); |
e80fec7f KW |
2575 | return 1; |
2576 | } | |
2577 | ||
2578 | size = argv[--argc]; | |
2579 | ||
2580 | /* Parse getopt arguments */ | |
ae6b0ed6 SH |
2581 | fmt = NULL; |
2582 | for(;;) { | |
f382d43a | 2583 | c = getopt(argc, argv, "f:hq"); |
ae6b0ed6 SH |
2584 | if (c == -1) { |
2585 | break; | |
2586 | } | |
2587 | switch(c) { | |
ef87394c | 2588 | case '?': |
ae6b0ed6 SH |
2589 | case 'h': |
2590 | help(); | |
2591 | break; | |
2592 | case 'f': | |
2593 | fmt = optarg; | |
2594 | break; | |
f382d43a MR |
2595 | case 'q': |
2596 | quiet = true; | |
2597 | break; | |
ae6b0ed6 SH |
2598 | } |
2599 | } | |
fc11eb26 | 2600 | if (optind != argc - 1) { |
ac1307ab | 2601 | error_exit("Expecting one image file name"); |
ae6b0ed6 SH |
2602 | } |
2603 | filename = argv[optind++]; | |
ae6b0ed6 SH |
2604 | |
2605 | /* Choose grow, shrink, or absolute resize mode */ | |
2606 | switch (size[0]) { | |
2607 | case '+': | |
2608 | relative = 1; | |
2609 | size++; | |
2610 | break; | |
2611 | case '-': | |
2612 | relative = -1; | |
2613 | size++; | |
2614 | break; | |
2615 | default: | |
2616 | relative = 0; | |
2617 | break; | |
2618 | } | |
2619 | ||
2620 | /* Parse size */ | |
87ea75d5 | 2621 | param = qemu_opts_create(&resize_options, NULL, 0, &error_abort); |
20caf0f7 | 2622 | if (qemu_opt_set(param, BLOCK_OPT_SIZE, size)) { |
ae6b0ed6 | 2623 | /* Error message already printed when size parsing fails */ |
2a81998a | 2624 | ret = -1; |
20caf0f7 | 2625 | qemu_opts_del(param); |
2a81998a | 2626 | goto out; |
ae6b0ed6 | 2627 | } |
20caf0f7 DXW |
2628 | n = qemu_opt_get_size(param, BLOCK_OPT_SIZE, 0); |
2629 | qemu_opts_del(param); | |
ae6b0ed6 | 2630 | |
9ffe3332 KW |
2631 | bs = bdrv_new_open("image", filename, fmt, BDRV_O_FLAGS | BDRV_O_RDWR, |
2632 | true, quiet); | |
c2abccec | 2633 | if (!bs) { |
2a81998a JS |
2634 | ret = -1; |
2635 | goto out; | |
c2abccec | 2636 | } |
ae6b0ed6 SH |
2637 | |
2638 | if (relative) { | |
2639 | total_size = bdrv_getlength(bs) + n * relative; | |
2640 | } else { | |
2641 | total_size = n; | |
2642 | } | |
2643 | if (total_size <= 0) { | |
15654a6d | 2644 | error_report("New image size must be positive"); |
c2abccec MK |
2645 | ret = -1; |
2646 | goto out; | |
ae6b0ed6 SH |
2647 | } |
2648 | ||
2649 | ret = bdrv_truncate(bs, total_size); | |
2650 | switch (ret) { | |
2651 | case 0: | |
f382d43a | 2652 | qprintf(quiet, "Image resized.\n"); |
ae6b0ed6 SH |
2653 | break; |
2654 | case -ENOTSUP: | |
259b2173 | 2655 | error_report("This image does not support resize"); |
ae6b0ed6 SH |
2656 | break; |
2657 | case -EACCES: | |
15654a6d | 2658 | error_report("Image is read-only"); |
ae6b0ed6 SH |
2659 | break; |
2660 | default: | |
15654a6d | 2661 | error_report("Error resizing image (%d)", -ret); |
ae6b0ed6 SH |
2662 | break; |
2663 | } | |
c2abccec | 2664 | out: |
2a81998a | 2665 | if (bs) { |
4f6fd349 | 2666 | bdrv_unref(bs); |
2a81998a | 2667 | } |
c2abccec MK |
2668 | if (ret) { |
2669 | return 1; | |
2670 | } | |
ae6b0ed6 SH |
2671 | return 0; |
2672 | } | |
2673 | ||
6f176b48 HR |
2674 | static int img_amend(int argc, char **argv) |
2675 | { | |
2676 | int c, ret = 0; | |
2677 | char *options = NULL; | |
2678 | QEMUOptionParameter *create_options = NULL, *options_param = NULL; | |
2679 | const char *fmt = NULL, *filename; | |
2680 | bool quiet = false; | |
2681 | BlockDriverState *bs = NULL; | |
2682 | ||
2683 | for (;;) { | |
2684 | c = getopt(argc, argv, "hqf:o:"); | |
2685 | if (c == -1) { | |
2686 | break; | |
2687 | } | |
2688 | ||
2689 | switch (c) { | |
2690 | case 'h': | |
2691 | case '?': | |
2692 | help(); | |
2693 | break; | |
2694 | case 'o': | |
626f84f3 KW |
2695 | if (!is_valid_option_list(optarg)) { |
2696 | error_report("Invalid option list: %s", optarg); | |
2697 | ret = -1; | |
2698 | goto out; | |
2699 | } | |
2700 | if (!options) { | |
2701 | options = g_strdup(optarg); | |
2702 | } else { | |
2703 | char *old_options = options; | |
2704 | options = g_strdup_printf("%s,%s", options, optarg); | |
2705 | g_free(old_options); | |
2706 | } | |
6f176b48 HR |
2707 | break; |
2708 | case 'f': | |
2709 | fmt = optarg; | |
2710 | break; | |
2711 | case 'q': | |
2712 | quiet = true; | |
2713 | break; | |
2714 | } | |
2715 | } | |
2716 | ||
a283cb6e | 2717 | if (!options) { |
ac1307ab | 2718 | error_exit("Must specify options (-o)"); |
6f176b48 HR |
2719 | } |
2720 | ||
a283cb6e KW |
2721 | filename = (optind == argc - 1) ? argv[argc - 1] : NULL; |
2722 | if (fmt && has_help_option(options)) { | |
2723 | /* If a format is explicitly specified (and possibly no filename is | |
2724 | * given), print option help here */ | |
2725 | ret = print_block_option_help(filename, fmt); | |
2726 | goto out; | |
6f176b48 HR |
2727 | } |
2728 | ||
a283cb6e | 2729 | if (optind != argc - 1) { |
ac1307ab | 2730 | error_exit("Expecting one image file name"); |
a283cb6e | 2731 | } |
6f176b48 | 2732 | |
9ffe3332 KW |
2733 | bs = bdrv_new_open("image", filename, fmt, |
2734 | BDRV_O_FLAGS | BDRV_O_RDWR, true, quiet); | |
6f176b48 HR |
2735 | if (!bs) { |
2736 | error_report("Could not open image '%s'", filename); | |
2737 | ret = -1; | |
2738 | goto out; | |
2739 | } | |
2740 | ||
2741 | fmt = bs->drv->format_name; | |
2742 | ||
626f84f3 | 2743 | if (has_help_option(options)) { |
a283cb6e | 2744 | /* If the format was auto-detected, print option help here */ |
6f176b48 HR |
2745 | ret = print_block_option_help(filename, fmt); |
2746 | goto out; | |
2747 | } | |
2748 | ||
2749 | create_options = append_option_parameters(create_options, | |
2750 | bs->drv->create_options); | |
2751 | options_param = parse_option_parameters(options, create_options, | |
2752 | options_param); | |
2753 | if (options_param == NULL) { | |
2754 | error_report("Invalid options for file format '%s'", fmt); | |
2755 | ret = -1; | |
2756 | goto out; | |
2757 | } | |
2758 | ||
2759 | ret = bdrv_amend_options(bs, options_param); | |
2760 | if (ret < 0) { | |
2761 | error_report("Error while amending options: %s", strerror(-ret)); | |
2762 | goto out; | |
2763 | } | |
2764 | ||
2765 | out: | |
2766 | if (bs) { | |
2767 | bdrv_unref(bs); | |
2768 | } | |
2769 | free_option_parameters(create_options); | |
2770 | free_option_parameters(options_param); | |
626f84f3 KW |
2771 | g_free(options); |
2772 | ||
6f176b48 HR |
2773 | if (ret) { |
2774 | return 1; | |
2775 | } | |
2776 | return 0; | |
2777 | } | |
2778 | ||
c227f099 | 2779 | static const img_cmd_t img_cmds[] = { |
153859be SB |
2780 | #define DEF(option, callback, arg_string) \ |
2781 | { option, callback }, | |
2782 | #include "qemu-img-cmds.h" | |
2783 | #undef DEF | |
2784 | #undef GEN_DOCS | |
2785 | { NULL, NULL, }, | |
2786 | }; | |
2787 | ||
ea2384d3 FB |
2788 | int main(int argc, char **argv) |
2789 | { | |
c227f099 | 2790 | const img_cmd_t *cmd; |
153859be | 2791 | const char *cmdname; |
ea2384d3 | 2792 | |
526eda14 MK |
2793 | #ifdef CONFIG_POSIX |
2794 | signal(SIGPIPE, SIG_IGN); | |
2795 | #endif | |
2796 | ||
53f76e58 | 2797 | error_set_progname(argv[0]); |
10f5bff6 | 2798 | qemu_init_exec_dir(argv[0]); |
53f76e58 | 2799 | |
2592c59a | 2800 | qemu_init_main_loop(); |
ea2384d3 | 2801 | bdrv_init(); |
ac1307ab FZ |
2802 | if (argc < 2) { |
2803 | error_exit("Not enough arguments"); | |
2804 | } | |
153859be | 2805 | cmdname = argv[1]; |
8f9b157e | 2806 | argc--; argv++; |
153859be SB |
2807 | |
2808 | /* find the command */ | |
2809 | for(cmd = img_cmds; cmd->name != NULL; cmd++) { | |
2810 | if (!strcmp(cmdname, cmd->name)) { | |
2811 | return cmd->handler(argc, argv); | |
2812 | } | |
ea2384d3 | 2813 | } |
153859be SB |
2814 | |
2815 | /* not found */ | |
ac1307ab | 2816 | error_exit("Command not found: %s", cmdname); |
ea2384d3 | 2817 | } |