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Commit | Line | Data |
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ea2384d3 | 1 | /* |
fb43f4dd | 2 | * QEMU disk image utility |
5fafdf24 | 3 | * |
68d0f70e | 4 | * Copyright (c) 2003-2008 Fabrice Bellard |
5fafdf24 | 5 | * |
ea2384d3 FB |
6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
7 | * of this software and associated documentation files (the "Software"), to deal | |
8 | * in the Software without restriction, including without limitation the rights | |
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
10 | * copies of the Software, and to permit persons to whom the Software is | |
11 | * furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
22 | * THE SOFTWARE. | |
23 | */ | |
c054b3fd BC |
24 | #include "qapi-visit.h" |
25 | #include "qapi/qmp-output-visitor.h" | |
7b1b5d19 | 26 | #include "qapi/qmp/qjson.h" |
faf07963 | 27 | #include "qemu-common.h" |
1de7afc9 PB |
28 | #include "qemu/option.h" |
29 | #include "qemu/error-report.h" | |
30 | #include "qemu/osdep.h" | |
9c17d615 | 31 | #include "sysemu/sysemu.h" |
737e150e | 32 | #include "block/block_int.h" |
f364ec65 | 33 | #include "block/qapi.h" |
c054b3fd | 34 | #include <getopt.h> |
e8445331 | 35 | |
5f6979cb JC |
36 | #define QEMU_IMG_VERSION "qemu-img version " QEMU_VERSION \ |
37 | ", Copyright (c) 2004-2008 Fabrice Bellard\n" | |
38 | ||
c227f099 | 39 | typedef struct img_cmd_t { |
153859be SB |
40 | const char *name; |
41 | int (*handler)(int argc, char **argv); | |
c227f099 | 42 | } img_cmd_t; |
153859be | 43 | |
8599ea4c FS |
44 | enum { |
45 | OPTION_OUTPUT = 256, | |
46 | OPTION_BACKING_CHAIN = 257, | |
47 | }; | |
48 | ||
49 | typedef enum OutputFormat { | |
50 | OFORMAT_JSON, | |
51 | OFORMAT_HUMAN, | |
52 | } OutputFormat; | |
53 | ||
137519ce | 54 | /* Default to cache=writeback as data integrity is not important for qemu-tcg. */ |
adfe078e | 55 | #define BDRV_O_FLAGS BDRV_O_CACHE_WB |
661a0f71 | 56 | #define BDRV_DEFAULT_CACHE "writeback" |
137519ce | 57 | |
ea2384d3 FB |
58 | static void format_print(void *opaque, const char *name) |
59 | { | |
60 | printf(" %s", name); | |
61 | } | |
62 | ||
ac1307ab FZ |
63 | static void QEMU_NORETURN GCC_FMT_ATTR(1, 2) error_exit(const char *fmt, ...) |
64 | { | |
65 | va_list ap; | |
66 | ||
67 | error_printf("qemu-img: "); | |
68 | ||
69 | va_start(ap, fmt); | |
70 | error_vprintf(fmt, ap); | |
71 | va_end(ap); | |
72 | ||
73 | error_printf("\nTry 'qemu-img --help' for more information\n"); | |
74 | exit(EXIT_FAILURE); | |
75 | } | |
76 | ||
d2c639d6 | 77 | /* Please keep in synch with qemu-img.texi */ |
ac1307ab | 78 | static void QEMU_NORETURN help(void) |
ea2384d3 | 79 | { |
e00291c0 | 80 | const char *help_msg = |
5f6979cb | 81 | QEMU_IMG_VERSION |
3f020d70 | 82 | "usage: qemu-img command [command options]\n" |
83 | "QEMU disk image utility\n" | |
84 | "\n" | |
85 | "Command syntax:\n" | |
153859be SB |
86 | #define DEF(option, callback, arg_string) \ |
87 | " " arg_string "\n" | |
88 | #include "qemu-img-cmds.h" | |
89 | #undef DEF | |
90 | #undef GEN_DOCS | |
3f020d70 | 91 | "\n" |
92 | "Command parameters:\n" | |
93 | " 'filename' is a disk image filename\n" | |
94 | " 'fmt' is the disk image format. It is guessed automatically in most cases\n" | |
661a0f71 | 95 | " 'cache' is the cache mode used to write the output disk image, the valid\n" |
80ccf93b LY |
96 | " options are: 'none', 'writeback' (default, except for convert), 'writethrough',\n" |
97 | " 'directsync' and 'unsafe' (default for convert)\n" | |
3f020d70 | 98 | " 'size' is the disk image size in bytes. Optional suffixes\n" |
5e00984a KW |
99 | " 'k' or 'K' (kilobyte, 1024), 'M' (megabyte, 1024k), 'G' (gigabyte, 1024M),\n" |
100 | " 'T' (terabyte, 1024G), 'P' (petabyte, 1024T) and 'E' (exabyte, 1024P) are\n" | |
101 | " supported. 'b' is ignored.\n" | |
3f020d70 | 102 | " 'output_filename' is the destination disk image filename\n" |
103 | " 'output_fmt' is the destination format\n" | |
104 | " 'options' is a comma separated list of format specific options in a\n" | |
105 | " name=value format. Use -o ? for an overview of the options supported by the\n" | |
106 | " used format\n" | |
ef80654d WX |
107 | " 'snapshot_param' is param used for internal snapshot, format\n" |
108 | " is 'snapshot.id=[ID],snapshot.name=[NAME]', or\n" | |
109 | " '[ID_OR_NAME]'\n" | |
110 | " 'snapshot_id_or_name' is deprecated, use 'snapshot_param'\n" | |
111 | " instead\n" | |
3f020d70 | 112 | " '-c' indicates that target image must be compressed (qcow format only)\n" |
113 | " '-u' enables unsafe rebasing. It is assumed that old and new backing file\n" | |
114 | " match exactly. The image doesn't need a working backing file before\n" | |
115 | " rebasing in this case (useful for renaming the backing file)\n" | |
116 | " '-h' with or without a command shows this help and lists the supported formats\n" | |
6b837bc4 | 117 | " '-p' show progress of command (only certain commands)\n" |
f382d43a | 118 | " '-q' use Quiet mode - do not print any output (except errors)\n" |
11b6699a PL |
119 | " '-S' indicates the consecutive number of bytes (defaults to 4k) that must\n" |
120 | " contain only zeros for qemu-img to create a sparse image during\n" | |
121 | " conversion. If the number of bytes is 0, the source will not be scanned for\n" | |
122 | " unallocated or zero sectors, and the destination image will always be\n" | |
123 | " fully allocated\n" | |
c054b3fd | 124 | " '--output' takes the format in which the output must be done (human or json)\n" |
b2e10493 AD |
125 | " '-n' skips the target volume creation (useful if the volume is created\n" |
126 | " prior to running qemu-img)\n" | |
3f020d70 | 127 | "\n" |
4534ff54 KW |
128 | "Parameters to check subcommand:\n" |
129 | " '-r' tries to repair any inconsistencies that are found during the check.\n" | |
130 | " '-r leaks' repairs only cluster leaks, whereas '-r all' fixes all\n" | |
131 | " kinds of errors, with a higher risk of choosing the wrong fix or\n" | |
0546b8c2 | 132 | " hiding corruption that has already occurred.\n" |
4534ff54 | 133 | "\n" |
3f020d70 | 134 | "Parameters to snapshot subcommand:\n" |
135 | " 'snapshot' is the name of the snapshot to create, apply or delete\n" | |
136 | " '-a' applies a snapshot (revert disk to saved state)\n" | |
137 | " '-c' creates a snapshot\n" | |
138 | " '-d' deletes a snapshot\n" | |
d14ed18c MR |
139 | " '-l' lists all snapshots in the given image\n" |
140 | "\n" | |
141 | "Parameters to compare subcommand:\n" | |
142 | " '-f' first image format\n" | |
143 | " '-F' second image format\n" | |
144 | " '-s' run in Strict mode - fail on different image size or sector allocation\n"; | |
e00291c0 PB |
145 | |
146 | printf("%s\nSupported formats:", help_msg); | |
ea2384d3 FB |
147 | bdrv_iterate_format(format_print, NULL); |
148 | printf("\n"); | |
ac1307ab | 149 | exit(EXIT_SUCCESS); |
ea2384d3 FB |
150 | } |
151 | ||
7c30f657 | 152 | static int GCC_FMT_ATTR(2, 3) qprintf(bool quiet, const char *fmt, ...) |
f382d43a MR |
153 | { |
154 | int ret = 0; | |
155 | if (!quiet) { | |
156 | va_list args; | |
157 | va_start(args, fmt); | |
158 | ret = vprintf(fmt, args); | |
159 | va_end(args); | |
160 | } | |
161 | return ret; | |
162 | } | |
163 | ||
ea2384d3 FB |
164 | #if defined(WIN32) |
165 | /* XXX: put correct support for win32 */ | |
166 | static int read_password(char *buf, int buf_size) | |
167 | { | |
168 | int c, i; | |
169 | printf("Password: "); | |
170 | fflush(stdout); | |
171 | i = 0; | |
172 | for(;;) { | |
173 | c = getchar(); | |
174 | if (c == '\n') | |
175 | break; | |
176 | if (i < (buf_size - 1)) | |
177 | buf[i++] = c; | |
178 | } | |
179 | buf[i] = '\0'; | |
180 | return 0; | |
181 | } | |
182 | ||
183 | #else | |
184 | ||
185 | #include <termios.h> | |
186 | ||
187 | static struct termios oldtty; | |
188 | ||
189 | static void term_exit(void) | |
190 | { | |
191 | tcsetattr (0, TCSANOW, &oldtty); | |
192 | } | |
193 | ||
194 | static void term_init(void) | |
195 | { | |
196 | struct termios tty; | |
197 | ||
198 | tcgetattr (0, &tty); | |
199 | oldtty = tty; | |
200 | ||
201 | tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP | |
202 | |INLCR|IGNCR|ICRNL|IXON); | |
203 | tty.c_oflag |= OPOST; | |
204 | tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN); | |
205 | tty.c_cflag &= ~(CSIZE|PARENB); | |
206 | tty.c_cflag |= CS8; | |
207 | tty.c_cc[VMIN] = 1; | |
208 | tty.c_cc[VTIME] = 0; | |
3b46e624 | 209 | |
ea2384d3 FB |
210 | tcsetattr (0, TCSANOW, &tty); |
211 | ||
212 | atexit(term_exit); | |
213 | } | |
214 | ||
3f379ab1 | 215 | static int read_password(char *buf, int buf_size) |
ea2384d3 FB |
216 | { |
217 | uint8_t ch; | |
218 | int i, ret; | |
219 | ||
220 | printf("password: "); | |
221 | fflush(stdout); | |
222 | term_init(); | |
223 | i = 0; | |
224 | for(;;) { | |
225 | ret = read(0, &ch, 1); | |
226 | if (ret == -1) { | |
227 | if (errno == EAGAIN || errno == EINTR) { | |
228 | continue; | |
229 | } else { | |
230 | ret = -1; | |
231 | break; | |
232 | } | |
233 | } else if (ret == 0) { | |
234 | ret = -1; | |
235 | break; | |
236 | } else { | |
237 | if (ch == '\r') { | |
238 | ret = 0; | |
239 | break; | |
240 | } | |
241 | if (i < (buf_size - 1)) | |
242 | buf[i++] = ch; | |
243 | } | |
244 | } | |
245 | term_exit(); | |
246 | buf[i] = '\0'; | |
247 | printf("\n"); | |
248 | return ret; | |
249 | } | |
250 | #endif | |
251 | ||
4ac8aacd JS |
252 | static int print_block_option_help(const char *filename, const char *fmt) |
253 | { | |
254 | BlockDriver *drv, *proto_drv; | |
255 | QEMUOptionParameter *create_options = NULL; | |
256 | ||
257 | /* Find driver and parse its options */ | |
258 | drv = bdrv_find_format(fmt); | |
259 | if (!drv) { | |
15654a6d | 260 | error_report("Unknown file format '%s'", fmt); |
4ac8aacd JS |
261 | return 1; |
262 | } | |
263 | ||
4ac8aacd JS |
264 | create_options = append_option_parameters(create_options, |
265 | drv->create_options); | |
a283cb6e KW |
266 | |
267 | if (filename) { | |
268 | proto_drv = bdrv_find_protocol(filename, true); | |
269 | if (!proto_drv) { | |
270 | error_report("Unknown protocol '%s'", filename); | |
271 | return 1; | |
272 | } | |
273 | create_options = append_option_parameters(create_options, | |
274 | proto_drv->create_options); | |
275 | } | |
276 | ||
4ac8aacd JS |
277 | print_option_help(create_options); |
278 | free_option_parameters(create_options); | |
279 | return 0; | |
280 | } | |
281 | ||
9ffe3332 KW |
282 | static BlockDriverState *bdrv_new_open(const char *id, |
283 | const char *filename, | |
9bc378c1 | 284 | const char *fmt, |
f0536bb8 | 285 | int flags, |
f382d43a MR |
286 | bool require_io, |
287 | bool quiet) | |
75c23805 FB |
288 | { |
289 | BlockDriverState *bs; | |
290 | BlockDriver *drv; | |
291 | char password[256]; | |
34b5d2c6 | 292 | Error *local_err = NULL; |
b9eaf9ec | 293 | int ret; |
75c23805 | 294 | |
9ffe3332 | 295 | bs = bdrv_new(id, &error_abort); |
ad717139 | 296 | |
75c23805 FB |
297 | if (fmt) { |
298 | drv = bdrv_find_format(fmt); | |
c2abccec | 299 | if (!drv) { |
15654a6d | 300 | error_report("Unknown file format '%s'", fmt); |
c2abccec MK |
301 | goto fail; |
302 | } | |
75c23805 FB |
303 | } else { |
304 | drv = NULL; | |
305 | } | |
b9eaf9ec | 306 | |
ddf5636d | 307 | ret = bdrv_open(&bs, filename, NULL, NULL, flags, drv, &local_err); |
b9eaf9ec | 308 | if (ret < 0) { |
34b5d2c6 HR |
309 | error_report("Could not open '%s': %s", filename, |
310 | error_get_pretty(local_err)); | |
311 | error_free(local_err); | |
c2abccec | 312 | goto fail; |
75c23805 | 313 | } |
b9eaf9ec | 314 | |
f0536bb8 | 315 | if (bdrv_is_encrypted(bs) && require_io) { |
f382d43a | 316 | qprintf(quiet, "Disk image '%s' is encrypted.\n", filename); |
c2abccec | 317 | if (read_password(password, sizeof(password)) < 0) { |
15654a6d | 318 | error_report("No password given"); |
c2abccec MK |
319 | goto fail; |
320 | } | |
321 | if (bdrv_set_key(bs, password) < 0) { | |
15654a6d | 322 | error_report("invalid password"); |
c2abccec MK |
323 | goto fail; |
324 | } | |
75c23805 FB |
325 | } |
326 | return bs; | |
c2abccec | 327 | fail: |
f67503e5 | 328 | bdrv_unref(bs); |
c2abccec | 329 | return NULL; |
75c23805 FB |
330 | } |
331 | ||
c2abccec | 332 | static int add_old_style_options(const char *fmt, QEMUOptionParameter *list, |
eec77d9e JS |
333 | const char *base_filename, |
334 | const char *base_fmt) | |
efa84d43 | 335 | { |
efa84d43 KW |
336 | if (base_filename) { |
337 | if (set_option_parameter(list, BLOCK_OPT_BACKING_FILE, base_filename)) { | |
15654a6d JS |
338 | error_report("Backing file not supported for file format '%s'", |
339 | fmt); | |
c2abccec | 340 | return -1; |
efa84d43 KW |
341 | } |
342 | } | |
343 | if (base_fmt) { | |
344 | if (set_option_parameter(list, BLOCK_OPT_BACKING_FMT, base_fmt)) { | |
15654a6d JS |
345 | error_report("Backing file format not supported for file " |
346 | "format '%s'", fmt); | |
c2abccec | 347 | return -1; |
efa84d43 KW |
348 | } |
349 | } | |
c2abccec | 350 | return 0; |
efa84d43 KW |
351 | } |
352 | ||
ea2384d3 FB |
353 | static int img_create(int argc, char **argv) |
354 | { | |
a9300911 | 355 | int c; |
1da7cfbd | 356 | uint64_t img_size = -1; |
ea2384d3 | 357 | const char *fmt = "raw"; |
9230eaf6 | 358 | const char *base_fmt = NULL; |
ea2384d3 FB |
359 | const char *filename; |
360 | const char *base_filename = NULL; | |
9ea2ea71 | 361 | char *options = NULL; |
9b37525a | 362 | Error *local_err = NULL; |
f382d43a | 363 | bool quiet = false; |
3b46e624 | 364 | |
ea2384d3 | 365 | for(;;) { |
f382d43a | 366 | c = getopt(argc, argv, "F:b:f:he6o:q"); |
b8fb60da | 367 | if (c == -1) { |
ea2384d3 | 368 | break; |
b8fb60da | 369 | } |
ea2384d3 | 370 | switch(c) { |
ef87394c | 371 | case '?': |
ea2384d3 FB |
372 | case 'h': |
373 | help(); | |
374 | break; | |
9230eaf6 AL |
375 | case 'F': |
376 | base_fmt = optarg; | |
377 | break; | |
ea2384d3 FB |
378 | case 'b': |
379 | base_filename = optarg; | |
380 | break; | |
381 | case 'f': | |
382 | fmt = optarg; | |
383 | break; | |
384 | case 'e': | |
9d42e15d | 385 | error_report("option -e is deprecated, please use \'-o " |
eec77d9e | 386 | "encryption\' instead!"); |
77386bf6 | 387 | goto fail; |
d8871c5a | 388 | case '6': |
9d42e15d | 389 | error_report("option -6 is deprecated, please use \'-o " |
eec77d9e | 390 | "compat6\' instead!"); |
77386bf6 | 391 | goto fail; |
9ea2ea71 | 392 | case 'o': |
77386bf6 KW |
393 | if (!is_valid_option_list(optarg)) { |
394 | error_report("Invalid option list: %s", optarg); | |
395 | goto fail; | |
396 | } | |
397 | if (!options) { | |
398 | options = g_strdup(optarg); | |
399 | } else { | |
400 | char *old_options = options; | |
401 | options = g_strdup_printf("%s,%s", options, optarg); | |
402 | g_free(old_options); | |
403 | } | |
9ea2ea71 | 404 | break; |
f382d43a MR |
405 | case 'q': |
406 | quiet = true; | |
407 | break; | |
ea2384d3 FB |
408 | } |
409 | } | |
9230eaf6 | 410 | |
b50cbabc | 411 | /* Get the filename */ |
a283cb6e KW |
412 | filename = (optind < argc) ? argv[optind] : NULL; |
413 | if (options && has_help_option(options)) { | |
414 | g_free(options); | |
415 | return print_block_option_help(filename, fmt); | |
416 | } | |
417 | ||
b8fb60da | 418 | if (optind >= argc) { |
ac1307ab | 419 | error_exit("Expecting image file name"); |
b8fb60da | 420 | } |
a283cb6e | 421 | optind++; |
b50cbabc | 422 | |
1da7cfbd JS |
423 | /* Get image size, if specified */ |
424 | if (optind < argc) { | |
70b4f4bb | 425 | int64_t sval; |
e36b3695 MA |
426 | char *end; |
427 | sval = strtosz_suffix(argv[optind++], &end, STRTOSZ_DEFSUFFIX_B); | |
428 | if (sval < 0 || *end) { | |
79443397 LG |
429 | if (sval == -ERANGE) { |
430 | error_report("Image size must be less than 8 EiB!"); | |
431 | } else { | |
432 | error_report("Invalid image size specified! You may use k, M, " | |
5e00984a KW |
433 | "G, T, P or E suffixes for "); |
434 | error_report("kilobytes, megabytes, gigabytes, terabytes, " | |
435 | "petabytes and exabytes."); | |
79443397 | 436 | } |
77386bf6 | 437 | goto fail; |
1da7cfbd JS |
438 | } |
439 | img_size = (uint64_t)sval; | |
440 | } | |
fc11eb26 | 441 | if (optind != argc) { |
ac1307ab | 442 | error_exit("Unexpected argument: %s", argv[optind]); |
fc11eb26 | 443 | } |
1da7cfbd | 444 | |
9b37525a | 445 | bdrv_img_create(filename, fmt, base_filename, base_fmt, |
f382d43a | 446 | options, img_size, BDRV_O_FLAGS, &local_err, quiet); |
84d18f06 | 447 | if (local_err) { |
b70d8c23 | 448 | error_report("%s: %s", filename, error_get_pretty(local_err)); |
9b37525a | 449 | error_free(local_err); |
77386bf6 | 450 | goto fail; |
c2abccec | 451 | } |
a9300911 | 452 | |
77386bf6 | 453 | g_free(options); |
ea2384d3 | 454 | return 0; |
77386bf6 KW |
455 | |
456 | fail: | |
457 | g_free(options); | |
458 | return 1; | |
ea2384d3 FB |
459 | } |
460 | ||
f382d43a | 461 | static void dump_json_image_check(ImageCheck *check, bool quiet) |
8599ea4c | 462 | { |
4399c438 | 463 | Error *local_err = NULL; |
8599ea4c FS |
464 | QString *str; |
465 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
466 | QObject *obj; | |
467 | visit_type_ImageCheck(qmp_output_get_visitor(ov), | |
4399c438 | 468 | &check, NULL, &local_err); |
8599ea4c FS |
469 | obj = qmp_output_get_qobject(ov); |
470 | str = qobject_to_json_pretty(obj); | |
471 | assert(str != NULL); | |
f382d43a | 472 | qprintf(quiet, "%s\n", qstring_get_str(str)); |
8599ea4c FS |
473 | qobject_decref(obj); |
474 | qmp_output_visitor_cleanup(ov); | |
475 | QDECREF(str); | |
476 | } | |
477 | ||
f382d43a | 478 | static void dump_human_image_check(ImageCheck *check, bool quiet) |
8599ea4c FS |
479 | { |
480 | if (!(check->corruptions || check->leaks || check->check_errors)) { | |
f382d43a | 481 | qprintf(quiet, "No errors were found on the image.\n"); |
8599ea4c FS |
482 | } else { |
483 | if (check->corruptions) { | |
f382d43a MR |
484 | qprintf(quiet, "\n%" PRId64 " errors were found on the image.\n" |
485 | "Data may be corrupted, or further writes to the image " | |
486 | "may corrupt it.\n", | |
487 | check->corruptions); | |
8599ea4c FS |
488 | } |
489 | ||
490 | if (check->leaks) { | |
f382d43a MR |
491 | qprintf(quiet, |
492 | "\n%" PRId64 " leaked clusters were found on the image.\n" | |
493 | "This means waste of disk space, but no harm to data.\n", | |
494 | check->leaks); | |
8599ea4c FS |
495 | } |
496 | ||
497 | if (check->check_errors) { | |
f382d43a MR |
498 | qprintf(quiet, |
499 | "\n%" PRId64 | |
500 | " internal errors have occurred during the check.\n", | |
501 | check->check_errors); | |
8599ea4c FS |
502 | } |
503 | } | |
504 | ||
505 | if (check->total_clusters != 0 && check->allocated_clusters != 0) { | |
f382d43a MR |
506 | qprintf(quiet, "%" PRId64 "/%" PRId64 " = %0.2f%% allocated, " |
507 | "%0.2f%% fragmented, %0.2f%% compressed clusters\n", | |
508 | check->allocated_clusters, check->total_clusters, | |
509 | check->allocated_clusters * 100.0 / check->total_clusters, | |
510 | check->fragmented_clusters * 100.0 / check->allocated_clusters, | |
511 | check->compressed_clusters * 100.0 / | |
512 | check->allocated_clusters); | |
8599ea4c FS |
513 | } |
514 | ||
515 | if (check->image_end_offset) { | |
f382d43a MR |
516 | qprintf(quiet, |
517 | "Image end offset: %" PRId64 "\n", check->image_end_offset); | |
8599ea4c FS |
518 | } |
519 | } | |
520 | ||
521 | static int collect_image_check(BlockDriverState *bs, | |
522 | ImageCheck *check, | |
523 | const char *filename, | |
524 | const char *fmt, | |
525 | int fix) | |
526 | { | |
527 | int ret; | |
528 | BdrvCheckResult result; | |
529 | ||
530 | ret = bdrv_check(bs, &result, fix); | |
531 | if (ret < 0) { | |
532 | return ret; | |
533 | } | |
534 | ||
535 | check->filename = g_strdup(filename); | |
536 | check->format = g_strdup(bdrv_get_format_name(bs)); | |
537 | check->check_errors = result.check_errors; | |
538 | check->corruptions = result.corruptions; | |
539 | check->has_corruptions = result.corruptions != 0; | |
540 | check->leaks = result.leaks; | |
541 | check->has_leaks = result.leaks != 0; | |
542 | check->corruptions_fixed = result.corruptions_fixed; | |
543 | check->has_corruptions_fixed = result.corruptions != 0; | |
544 | check->leaks_fixed = result.leaks_fixed; | |
545 | check->has_leaks_fixed = result.leaks != 0; | |
546 | check->image_end_offset = result.image_end_offset; | |
547 | check->has_image_end_offset = result.image_end_offset != 0; | |
548 | check->total_clusters = result.bfi.total_clusters; | |
549 | check->has_total_clusters = result.bfi.total_clusters != 0; | |
550 | check->allocated_clusters = result.bfi.allocated_clusters; | |
551 | check->has_allocated_clusters = result.bfi.allocated_clusters != 0; | |
552 | check->fragmented_clusters = result.bfi.fragmented_clusters; | |
553 | check->has_fragmented_clusters = result.bfi.fragmented_clusters != 0; | |
e6439d78 SH |
554 | check->compressed_clusters = result.bfi.compressed_clusters; |
555 | check->has_compressed_clusters = result.bfi.compressed_clusters != 0; | |
8599ea4c FS |
556 | |
557 | return 0; | |
558 | } | |
559 | ||
e076f338 KW |
560 | /* |
561 | * Checks an image for consistency. Exit codes: | |
562 | * | |
563 | * 0 - Check completed, image is good | |
564 | * 1 - Check not completed because of internal errors | |
565 | * 2 - Check completed, image is corrupted | |
566 | * 3 - Check completed, image has leaked clusters, but is good otherwise | |
567 | */ | |
1585969c AL |
568 | static int img_check(int argc, char **argv) |
569 | { | |
570 | int c, ret; | |
8599ea4c FS |
571 | OutputFormat output_format = OFORMAT_HUMAN; |
572 | const char *filename, *fmt, *output; | |
1585969c | 573 | BlockDriverState *bs; |
4534ff54 | 574 | int fix = 0; |
058f8f16 | 575 | int flags = BDRV_O_FLAGS | BDRV_O_CHECK; |
8599ea4c | 576 | ImageCheck *check; |
f382d43a | 577 | bool quiet = false; |
1585969c AL |
578 | |
579 | fmt = NULL; | |
8599ea4c | 580 | output = NULL; |
1585969c | 581 | for(;;) { |
8599ea4c FS |
582 | int option_index = 0; |
583 | static const struct option long_options[] = { | |
584 | {"help", no_argument, 0, 'h'}, | |
585 | {"format", required_argument, 0, 'f'}, | |
4fd6a984 | 586 | {"repair", required_argument, 0, 'r'}, |
8599ea4c FS |
587 | {"output", required_argument, 0, OPTION_OUTPUT}, |
588 | {0, 0, 0, 0} | |
589 | }; | |
f382d43a | 590 | c = getopt_long(argc, argv, "f:hr:q", |
8599ea4c | 591 | long_options, &option_index); |
b8fb60da | 592 | if (c == -1) { |
1585969c | 593 | break; |
b8fb60da | 594 | } |
1585969c | 595 | switch(c) { |
ef87394c | 596 | case '?': |
1585969c AL |
597 | case 'h': |
598 | help(); | |
599 | break; | |
600 | case 'f': | |
601 | fmt = optarg; | |
602 | break; | |
4534ff54 KW |
603 | case 'r': |
604 | flags |= BDRV_O_RDWR; | |
605 | ||
606 | if (!strcmp(optarg, "leaks")) { | |
607 | fix = BDRV_FIX_LEAKS; | |
608 | } else if (!strcmp(optarg, "all")) { | |
609 | fix = BDRV_FIX_LEAKS | BDRV_FIX_ERRORS; | |
610 | } else { | |
ac1307ab FZ |
611 | error_exit("Unknown option value for -r " |
612 | "(expecting 'leaks' or 'all'): %s", optarg); | |
4534ff54 KW |
613 | } |
614 | break; | |
8599ea4c FS |
615 | case OPTION_OUTPUT: |
616 | output = optarg; | |
617 | break; | |
f382d43a MR |
618 | case 'q': |
619 | quiet = true; | |
620 | break; | |
1585969c AL |
621 | } |
622 | } | |
fc11eb26 | 623 | if (optind != argc - 1) { |
ac1307ab | 624 | error_exit("Expecting one image file name"); |
b8fb60da | 625 | } |
1585969c AL |
626 | filename = argv[optind++]; |
627 | ||
8599ea4c FS |
628 | if (output && !strcmp(output, "json")) { |
629 | output_format = OFORMAT_JSON; | |
630 | } else if (output && !strcmp(output, "human")) { | |
631 | output_format = OFORMAT_HUMAN; | |
632 | } else if (output) { | |
633 | error_report("--output must be used with human or json as argument."); | |
634 | return 1; | |
635 | } | |
636 | ||
9ffe3332 | 637 | bs = bdrv_new_open("image", filename, fmt, flags, true, quiet); |
c2abccec MK |
638 | if (!bs) { |
639 | return 1; | |
640 | } | |
8599ea4c FS |
641 | |
642 | check = g_new0(ImageCheck, 1); | |
643 | ret = collect_image_check(bs, check, filename, fmt, fix); | |
e076f338 KW |
644 | |
645 | if (ret == -ENOTSUP) { | |
8599ea4c FS |
646 | if (output_format == OFORMAT_HUMAN) { |
647 | error_report("This image format does not support checks"); | |
648 | } | |
fefddf95 | 649 | ret = 63; |
8599ea4c | 650 | goto fail; |
e076f338 KW |
651 | } |
652 | ||
8599ea4c FS |
653 | if (check->corruptions_fixed || check->leaks_fixed) { |
654 | int corruptions_fixed, leaks_fixed; | |
ccf34716 | 655 | |
8599ea4c FS |
656 | leaks_fixed = check->leaks_fixed; |
657 | corruptions_fixed = check->corruptions_fixed; | |
e076f338 | 658 | |
8599ea4c | 659 | if (output_format == OFORMAT_HUMAN) { |
f382d43a MR |
660 | qprintf(quiet, |
661 | "The following inconsistencies were found and repaired:\n\n" | |
662 | " %" PRId64 " leaked clusters\n" | |
663 | " %" PRId64 " corruptions\n\n" | |
664 | "Double checking the fixed image now...\n", | |
665 | check->leaks_fixed, | |
666 | check->corruptions_fixed); | |
e076f338 KW |
667 | } |
668 | ||
8599ea4c | 669 | ret = collect_image_check(bs, check, filename, fmt, 0); |
1585969c | 670 | |
8599ea4c FS |
671 | check->leaks_fixed = leaks_fixed; |
672 | check->corruptions_fixed = corruptions_fixed; | |
f8111c24 DXW |
673 | } |
674 | ||
8599ea4c FS |
675 | switch (output_format) { |
676 | case OFORMAT_HUMAN: | |
f382d43a | 677 | dump_human_image_check(check, quiet); |
8599ea4c FS |
678 | break; |
679 | case OFORMAT_JSON: | |
f382d43a | 680 | dump_json_image_check(check, quiet); |
8599ea4c | 681 | break; |
c6bb9ad1 FS |
682 | } |
683 | ||
8599ea4c FS |
684 | if (ret || check->check_errors) { |
685 | ret = 1; | |
686 | goto fail; | |
c2abccec | 687 | } |
e076f338 | 688 | |
8599ea4c FS |
689 | if (check->corruptions) { |
690 | ret = 2; | |
691 | } else if (check->leaks) { | |
692 | ret = 3; | |
e076f338 | 693 | } else { |
8599ea4c | 694 | ret = 0; |
e076f338 | 695 | } |
8599ea4c FS |
696 | |
697 | fail: | |
698 | qapi_free_ImageCheck(check); | |
4f6fd349 | 699 | bdrv_unref(bs); |
8599ea4c FS |
700 | |
701 | return ret; | |
1585969c AL |
702 | } |
703 | ||
ea2384d3 FB |
704 | static int img_commit(int argc, char **argv) |
705 | { | |
661a0f71 FS |
706 | int c, ret, flags; |
707 | const char *filename, *fmt, *cache; | |
ea2384d3 | 708 | BlockDriverState *bs; |
f382d43a | 709 | bool quiet = false; |
ea2384d3 FB |
710 | |
711 | fmt = NULL; | |
661a0f71 | 712 | cache = BDRV_DEFAULT_CACHE; |
ea2384d3 | 713 | for(;;) { |
f382d43a | 714 | c = getopt(argc, argv, "f:ht:q"); |
b8fb60da | 715 | if (c == -1) { |
ea2384d3 | 716 | break; |
b8fb60da | 717 | } |
ea2384d3 | 718 | switch(c) { |
ef87394c | 719 | case '?': |
ea2384d3 FB |
720 | case 'h': |
721 | help(); | |
722 | break; | |
723 | case 'f': | |
724 | fmt = optarg; | |
725 | break; | |
661a0f71 FS |
726 | case 't': |
727 | cache = optarg; | |
728 | break; | |
f382d43a MR |
729 | case 'q': |
730 | quiet = true; | |
731 | break; | |
ea2384d3 FB |
732 | } |
733 | } | |
fc11eb26 | 734 | if (optind != argc - 1) { |
ac1307ab | 735 | error_exit("Expecting one image file name"); |
b8fb60da | 736 | } |
ea2384d3 FB |
737 | filename = argv[optind++]; |
738 | ||
661a0f71 | 739 | flags = BDRV_O_RDWR; |
c3993cdc | 740 | ret = bdrv_parse_cache_flags(cache, &flags); |
661a0f71 FS |
741 | if (ret < 0) { |
742 | error_report("Invalid cache option: %s", cache); | |
743 | return -1; | |
744 | } | |
745 | ||
9ffe3332 | 746 | bs = bdrv_new_open("image", filename, fmt, flags, true, quiet); |
c2abccec MK |
747 | if (!bs) { |
748 | return 1; | |
749 | } | |
ea2384d3 FB |
750 | ret = bdrv_commit(bs); |
751 | switch(ret) { | |
752 | case 0: | |
f382d43a | 753 | qprintf(quiet, "Image committed.\n"); |
ea2384d3 FB |
754 | break; |
755 | case -ENOENT: | |
15654a6d | 756 | error_report("No disk inserted"); |
ea2384d3 FB |
757 | break; |
758 | case -EACCES: | |
15654a6d | 759 | error_report("Image is read-only"); |
ea2384d3 FB |
760 | break; |
761 | case -ENOTSUP: | |
15654a6d | 762 | error_report("Image is already committed"); |
ea2384d3 FB |
763 | break; |
764 | default: | |
15654a6d | 765 | error_report("Error while committing image"); |
ea2384d3 FB |
766 | break; |
767 | } | |
768 | ||
4f6fd349 | 769 | bdrv_unref(bs); |
c2abccec MK |
770 | if (ret) { |
771 | return 1; | |
772 | } | |
ea2384d3 FB |
773 | return 0; |
774 | } | |
775 | ||
f58c7b35 TS |
776 | /* |
777 | * Returns true iff the first sector pointed to by 'buf' contains at least | |
778 | * a non-NUL byte. | |
779 | * | |
780 | * 'pnum' is set to the number of sectors (including and immediately following | |
781 | * the first one) that are known to be in the same allocated/unallocated state. | |
782 | */ | |
ea2384d3 FB |
783 | static int is_allocated_sectors(const uint8_t *buf, int n, int *pnum) |
784 | { | |
1a6d39fd SH |
785 | bool is_zero; |
786 | int i; | |
ea2384d3 FB |
787 | |
788 | if (n <= 0) { | |
789 | *pnum = 0; | |
790 | return 0; | |
791 | } | |
1a6d39fd | 792 | is_zero = buffer_is_zero(buf, 512); |
ea2384d3 FB |
793 | for(i = 1; i < n; i++) { |
794 | buf += 512; | |
1a6d39fd | 795 | if (is_zero != buffer_is_zero(buf, 512)) { |
ea2384d3 | 796 | break; |
1a6d39fd | 797 | } |
ea2384d3 FB |
798 | } |
799 | *pnum = i; | |
1a6d39fd | 800 | return !is_zero; |
ea2384d3 FB |
801 | } |
802 | ||
a22f123c KW |
803 | /* |
804 | * Like is_allocated_sectors, but if the buffer starts with a used sector, | |
805 | * up to 'min' consecutive sectors containing zeros are ignored. This avoids | |
806 | * breaking up write requests for only small sparse areas. | |
807 | */ | |
808 | static int is_allocated_sectors_min(const uint8_t *buf, int n, int *pnum, | |
809 | int min) | |
810 | { | |
811 | int ret; | |
812 | int num_checked, num_used; | |
813 | ||
814 | if (n < min) { | |
815 | min = n; | |
816 | } | |
817 | ||
818 | ret = is_allocated_sectors(buf, n, pnum); | |
819 | if (!ret) { | |
820 | return ret; | |
821 | } | |
822 | ||
823 | num_used = *pnum; | |
824 | buf += BDRV_SECTOR_SIZE * *pnum; | |
825 | n -= *pnum; | |
826 | num_checked = num_used; | |
827 | ||
828 | while (n > 0) { | |
829 | ret = is_allocated_sectors(buf, n, pnum); | |
830 | ||
831 | buf += BDRV_SECTOR_SIZE * *pnum; | |
832 | n -= *pnum; | |
833 | num_checked += *pnum; | |
834 | if (ret) { | |
835 | num_used = num_checked; | |
836 | } else if (*pnum >= min) { | |
837 | break; | |
838 | } | |
839 | } | |
840 | ||
841 | *pnum = num_used; | |
842 | return 1; | |
843 | } | |
844 | ||
3e85c6fd KW |
845 | /* |
846 | * Compares two buffers sector by sector. Returns 0 if the first sector of both | |
847 | * buffers matches, non-zero otherwise. | |
848 | * | |
849 | * pnum is set to the number of sectors (including and immediately following | |
850 | * the first one) that are known to have the same comparison result | |
851 | */ | |
852 | static int compare_sectors(const uint8_t *buf1, const uint8_t *buf2, int n, | |
853 | int *pnum) | |
854 | { | |
855 | int res, i; | |
856 | ||
857 | if (n <= 0) { | |
858 | *pnum = 0; | |
859 | return 0; | |
860 | } | |
861 | ||
862 | res = !!memcmp(buf1, buf2, 512); | |
863 | for(i = 1; i < n; i++) { | |
864 | buf1 += 512; | |
865 | buf2 += 512; | |
866 | ||
867 | if (!!memcmp(buf1, buf2, 512) != res) { | |
868 | break; | |
869 | } | |
870 | } | |
871 | ||
872 | *pnum = i; | |
873 | return res; | |
874 | } | |
875 | ||
80ee15a6 | 876 | #define IO_BUF_SIZE (2 * 1024 * 1024) |
ea2384d3 | 877 | |
d14ed18c MR |
878 | static int64_t sectors_to_bytes(int64_t sectors) |
879 | { | |
880 | return sectors << BDRV_SECTOR_BITS; | |
881 | } | |
882 | ||
883 | static int64_t sectors_to_process(int64_t total, int64_t from) | |
884 | { | |
885 | return MIN(total - from, IO_BUF_SIZE >> BDRV_SECTOR_BITS); | |
886 | } | |
887 | ||
888 | /* | |
889 | * Check if passed sectors are empty (not allocated or contain only 0 bytes) | |
890 | * | |
891 | * Returns 0 in case sectors are filled with 0, 1 if sectors contain non-zero | |
892 | * data and negative value on error. | |
893 | * | |
894 | * @param bs: Driver used for accessing file | |
895 | * @param sect_num: Number of first sector to check | |
896 | * @param sect_count: Number of sectors to check | |
897 | * @param filename: Name of disk file we are checking (logging purpose) | |
898 | * @param buffer: Allocated buffer for storing read data | |
899 | * @param quiet: Flag for quiet mode | |
900 | */ | |
901 | static int check_empty_sectors(BlockDriverState *bs, int64_t sect_num, | |
902 | int sect_count, const char *filename, | |
903 | uint8_t *buffer, bool quiet) | |
904 | { | |
905 | int pnum, ret = 0; | |
906 | ret = bdrv_read(bs, sect_num, buffer, sect_count); | |
907 | if (ret < 0) { | |
908 | error_report("Error while reading offset %" PRId64 " of %s: %s", | |
909 | sectors_to_bytes(sect_num), filename, strerror(-ret)); | |
910 | return ret; | |
911 | } | |
912 | ret = is_allocated_sectors(buffer, sect_count, &pnum); | |
913 | if (ret || pnum != sect_count) { | |
914 | qprintf(quiet, "Content mismatch at offset %" PRId64 "!\n", | |
915 | sectors_to_bytes(ret ? sect_num : sect_num + pnum)); | |
916 | return 1; | |
917 | } | |
918 | ||
919 | return 0; | |
920 | } | |
921 | ||
922 | /* | |
923 | * Compares two images. Exit codes: | |
924 | * | |
925 | * 0 - Images are identical | |
926 | * 1 - Images differ | |
927 | * >1 - Error occurred | |
928 | */ | |
929 | static int img_compare(int argc, char **argv) | |
930 | { | |
931 | const char *fmt1 = NULL, *fmt2 = NULL, *filename1, *filename2; | |
932 | BlockDriverState *bs1, *bs2; | |
933 | int64_t total_sectors1, total_sectors2; | |
934 | uint8_t *buf1 = NULL, *buf2 = NULL; | |
935 | int pnum1, pnum2; | |
936 | int allocated1, allocated2; | |
937 | int ret = 0; /* return value - 0 Ident, 1 Different, >1 Error */ | |
938 | bool progress = false, quiet = false, strict = false; | |
939 | int64_t total_sectors; | |
940 | int64_t sector_num = 0; | |
941 | int64_t nb_sectors; | |
942 | int c, pnum; | |
943 | uint64_t bs_sectors; | |
944 | uint64_t progress_base; | |
945 | ||
946 | for (;;) { | |
947 | c = getopt(argc, argv, "hpf:F:sq"); | |
948 | if (c == -1) { | |
949 | break; | |
950 | } | |
951 | switch (c) { | |
952 | case '?': | |
953 | case 'h': | |
954 | help(); | |
955 | break; | |
956 | case 'f': | |
957 | fmt1 = optarg; | |
958 | break; | |
959 | case 'F': | |
960 | fmt2 = optarg; | |
961 | break; | |
962 | case 'p': | |
963 | progress = true; | |
964 | break; | |
965 | case 'q': | |
966 | quiet = true; | |
967 | break; | |
968 | case 's': | |
969 | strict = true; | |
970 | break; | |
971 | } | |
972 | } | |
973 | ||
974 | /* Progress is not shown in Quiet mode */ | |
975 | if (quiet) { | |
976 | progress = false; | |
977 | } | |
978 | ||
979 | ||
fc11eb26 | 980 | if (optind != argc - 2) { |
ac1307ab | 981 | error_exit("Expecting two image file names"); |
d14ed18c MR |
982 | } |
983 | filename1 = argv[optind++]; | |
984 | filename2 = argv[optind++]; | |
985 | ||
986 | /* Initialize before goto out */ | |
987 | qemu_progress_init(progress, 2.0); | |
988 | ||
9ffe3332 | 989 | bs1 = bdrv_new_open("image 1", filename1, fmt1, BDRV_O_FLAGS, true, quiet); |
d14ed18c MR |
990 | if (!bs1) { |
991 | error_report("Can't open file %s", filename1); | |
992 | ret = 2; | |
993 | goto out3; | |
994 | } | |
995 | ||
9ffe3332 | 996 | bs2 = bdrv_new_open("image 2", filename2, fmt2, BDRV_O_FLAGS, true, quiet); |
d14ed18c MR |
997 | if (!bs2) { |
998 | error_report("Can't open file %s", filename2); | |
999 | ret = 2; | |
1000 | goto out2; | |
1001 | } | |
1002 | ||
1003 | buf1 = qemu_blockalign(bs1, IO_BUF_SIZE); | |
1004 | buf2 = qemu_blockalign(bs2, IO_BUF_SIZE); | |
1005 | bdrv_get_geometry(bs1, &bs_sectors); | |
1006 | total_sectors1 = bs_sectors; | |
1007 | bdrv_get_geometry(bs2, &bs_sectors); | |
1008 | total_sectors2 = bs_sectors; | |
1009 | total_sectors = MIN(total_sectors1, total_sectors2); | |
1010 | progress_base = MAX(total_sectors1, total_sectors2); | |
1011 | ||
1012 | qemu_progress_print(0, 100); | |
1013 | ||
1014 | if (strict && total_sectors1 != total_sectors2) { | |
1015 | ret = 1; | |
1016 | qprintf(quiet, "Strict mode: Image size mismatch!\n"); | |
1017 | goto out; | |
1018 | } | |
1019 | ||
1020 | for (;;) { | |
1021 | nb_sectors = sectors_to_process(total_sectors, sector_num); | |
1022 | if (nb_sectors <= 0) { | |
1023 | break; | |
1024 | } | |
1025 | allocated1 = bdrv_is_allocated_above(bs1, NULL, sector_num, nb_sectors, | |
1026 | &pnum1); | |
1027 | if (allocated1 < 0) { | |
1028 | ret = 3; | |
1029 | error_report("Sector allocation test failed for %s", filename1); | |
1030 | goto out; | |
1031 | } | |
1032 | ||
1033 | allocated2 = bdrv_is_allocated_above(bs2, NULL, sector_num, nb_sectors, | |
1034 | &pnum2); | |
1035 | if (allocated2 < 0) { | |
1036 | ret = 3; | |
1037 | error_report("Sector allocation test failed for %s", filename2); | |
1038 | goto out; | |
1039 | } | |
1040 | nb_sectors = MIN(pnum1, pnum2); | |
1041 | ||
1042 | if (allocated1 == allocated2) { | |
1043 | if (allocated1) { | |
1044 | ret = bdrv_read(bs1, sector_num, buf1, nb_sectors); | |
1045 | if (ret < 0) { | |
1046 | error_report("Error while reading offset %" PRId64 " of %s:" | |
1047 | " %s", sectors_to_bytes(sector_num), filename1, | |
1048 | strerror(-ret)); | |
1049 | ret = 4; | |
1050 | goto out; | |
1051 | } | |
1052 | ret = bdrv_read(bs2, sector_num, buf2, nb_sectors); | |
1053 | if (ret < 0) { | |
1054 | error_report("Error while reading offset %" PRId64 | |
1055 | " of %s: %s", sectors_to_bytes(sector_num), | |
1056 | filename2, strerror(-ret)); | |
1057 | ret = 4; | |
1058 | goto out; | |
1059 | } | |
1060 | ret = compare_sectors(buf1, buf2, nb_sectors, &pnum); | |
1061 | if (ret || pnum != nb_sectors) { | |
d14ed18c MR |
1062 | qprintf(quiet, "Content mismatch at offset %" PRId64 "!\n", |
1063 | sectors_to_bytes( | |
1064 | ret ? sector_num : sector_num + pnum)); | |
36452f12 | 1065 | ret = 1; |
d14ed18c MR |
1066 | goto out; |
1067 | } | |
1068 | } | |
1069 | } else { | |
1070 | if (strict) { | |
1071 | ret = 1; | |
1072 | qprintf(quiet, "Strict mode: Offset %" PRId64 | |
1073 | " allocation mismatch!\n", | |
1074 | sectors_to_bytes(sector_num)); | |
1075 | goto out; | |
1076 | } | |
1077 | ||
1078 | if (allocated1) { | |
1079 | ret = check_empty_sectors(bs1, sector_num, nb_sectors, | |
1080 | filename1, buf1, quiet); | |
1081 | } else { | |
1082 | ret = check_empty_sectors(bs2, sector_num, nb_sectors, | |
1083 | filename2, buf1, quiet); | |
1084 | } | |
1085 | if (ret) { | |
1086 | if (ret < 0) { | |
d14ed18c MR |
1087 | error_report("Error while reading offset %" PRId64 ": %s", |
1088 | sectors_to_bytes(sector_num), strerror(-ret)); | |
36452f12 | 1089 | ret = 4; |
d14ed18c MR |
1090 | } |
1091 | goto out; | |
1092 | } | |
1093 | } | |
1094 | sector_num += nb_sectors; | |
1095 | qemu_progress_print(((float) nb_sectors / progress_base)*100, 100); | |
1096 | } | |
1097 | ||
1098 | if (total_sectors1 != total_sectors2) { | |
1099 | BlockDriverState *bs_over; | |
1100 | int64_t total_sectors_over; | |
1101 | const char *filename_over; | |
1102 | ||
1103 | qprintf(quiet, "Warning: Image size mismatch!\n"); | |
1104 | if (total_sectors1 > total_sectors2) { | |
1105 | total_sectors_over = total_sectors1; | |
1106 | bs_over = bs1; | |
1107 | filename_over = filename1; | |
1108 | } else { | |
1109 | total_sectors_over = total_sectors2; | |
1110 | bs_over = bs2; | |
1111 | filename_over = filename2; | |
1112 | } | |
1113 | ||
1114 | for (;;) { | |
1115 | nb_sectors = sectors_to_process(total_sectors_over, sector_num); | |
1116 | if (nb_sectors <= 0) { | |
1117 | break; | |
1118 | } | |
1119 | ret = bdrv_is_allocated_above(bs_over, NULL, sector_num, | |
1120 | nb_sectors, &pnum); | |
1121 | if (ret < 0) { | |
1122 | ret = 3; | |
1123 | error_report("Sector allocation test failed for %s", | |
1124 | filename_over); | |
1125 | goto out; | |
1126 | ||
1127 | } | |
1128 | nb_sectors = pnum; | |
1129 | if (ret) { | |
1130 | ret = check_empty_sectors(bs_over, sector_num, nb_sectors, | |
1131 | filename_over, buf1, quiet); | |
1132 | if (ret) { | |
1133 | if (ret < 0) { | |
d14ed18c MR |
1134 | error_report("Error while reading offset %" PRId64 |
1135 | " of %s: %s", sectors_to_bytes(sector_num), | |
1136 | filename_over, strerror(-ret)); | |
36452f12 | 1137 | ret = 4; |
d14ed18c MR |
1138 | } |
1139 | goto out; | |
1140 | } | |
1141 | } | |
1142 | sector_num += nb_sectors; | |
1143 | qemu_progress_print(((float) nb_sectors / progress_base)*100, 100); | |
1144 | } | |
1145 | } | |
1146 | ||
1147 | qprintf(quiet, "Images are identical.\n"); | |
1148 | ret = 0; | |
1149 | ||
1150 | out: | |
4f6fd349 | 1151 | bdrv_unref(bs2); |
d14ed18c MR |
1152 | qemu_vfree(buf1); |
1153 | qemu_vfree(buf2); | |
1154 | out2: | |
4f6fd349 | 1155 | bdrv_unref(bs1); |
d14ed18c MR |
1156 | out3: |
1157 | qemu_progress_end(); | |
1158 | return ret; | |
1159 | } | |
1160 | ||
ea2384d3 FB |
1161 | static int img_convert(int argc, char **argv) |
1162 | { | |
24f833cd | 1163 | int c, n, n1, bs_n, bs_i, compress, cluster_sectors, skip_create; |
13c28af8 | 1164 | int64_t ret = 0; |
661a0f71 FS |
1165 | int progress = 0, flags; |
1166 | const char *fmt, *out_fmt, *cache, *out_baseimg, *out_filename; | |
b50cbabc | 1167 | BlockDriver *drv, *proto_drv; |
c2abccec | 1168 | BlockDriverState **bs = NULL, *out_bs = NULL; |
802c3d4c | 1169 | int64_t total_sectors, nb_sectors, sector_num, bs_offset; |
96b8f136 | 1170 | uint64_t bs_sectors; |
c2abccec | 1171 | uint8_t * buf = NULL; |
f2521c90 | 1172 | size_t bufsectors = IO_BUF_SIZE / BDRV_SECTOR_SIZE; |
ea2384d3 | 1173 | const uint8_t *buf1; |
faea38e7 | 1174 | BlockDriverInfo bdi; |
b50cbabc | 1175 | QEMUOptionParameter *param = NULL, *create_options = NULL; |
a18953fb | 1176 | QEMUOptionParameter *out_baseimg_param; |
efa84d43 | 1177 | char *options = NULL; |
51ef6727 | 1178 | const char *snapshot_name = NULL; |
a22f123c | 1179 | int min_sparse = 8; /* Need at least 4k of zeros for sparse detection */ |
f382d43a | 1180 | bool quiet = false; |
cc84d90f | 1181 | Error *local_err = NULL; |
ef80654d | 1182 | QemuOpts *sn_opts = NULL; |
ea2384d3 FB |
1183 | |
1184 | fmt = NULL; | |
1185 | out_fmt = "raw"; | |
661a0f71 | 1186 | cache = "unsafe"; |
f58c7b35 | 1187 | out_baseimg = NULL; |
eec77d9e | 1188 | compress = 0; |
b2e10493 | 1189 | skip_create = 0; |
ea2384d3 | 1190 | for(;;) { |
ef80654d | 1191 | c = getopt(argc, argv, "f:O:B:s:hce6o:pS:t:qnl:"); |
b8fb60da | 1192 | if (c == -1) { |
ea2384d3 | 1193 | break; |
b8fb60da | 1194 | } |
ea2384d3 | 1195 | switch(c) { |
ef87394c | 1196 | case '?': |
ea2384d3 FB |
1197 | case 'h': |
1198 | help(); | |
1199 | break; | |
1200 | case 'f': | |
1201 | fmt = optarg; | |
1202 | break; | |
1203 | case 'O': | |
1204 | out_fmt = optarg; | |
1205 | break; | |
f58c7b35 TS |
1206 | case 'B': |
1207 | out_baseimg = optarg; | |
1208 | break; | |
ea2384d3 | 1209 | case 'c': |
eec77d9e | 1210 | compress = 1; |
ea2384d3 FB |
1211 | break; |
1212 | case 'e': | |
9d42e15d | 1213 | error_report("option -e is deprecated, please use \'-o " |
eec77d9e | 1214 | "encryption\' instead!"); |
2dc8328b | 1215 | ret = -1; |
64bb01aa | 1216 | goto fail_getopt; |
ec36ba14 | 1217 | case '6': |
9d42e15d | 1218 | error_report("option -6 is deprecated, please use \'-o " |
eec77d9e | 1219 | "compat6\' instead!"); |
2dc8328b | 1220 | ret = -1; |
64bb01aa | 1221 | goto fail_getopt; |
efa84d43 | 1222 | case 'o': |
2dc8328b KW |
1223 | if (!is_valid_option_list(optarg)) { |
1224 | error_report("Invalid option list: %s", optarg); | |
1225 | ret = -1; | |
64bb01aa | 1226 | goto fail_getopt; |
2dc8328b KW |
1227 | } |
1228 | if (!options) { | |
1229 | options = g_strdup(optarg); | |
1230 | } else { | |
1231 | char *old_options = options; | |
1232 | options = g_strdup_printf("%s,%s", options, optarg); | |
1233 | g_free(old_options); | |
1234 | } | |
efa84d43 | 1235 | break; |
51ef6727 | 1236 | case 's': |
1237 | snapshot_name = optarg; | |
1238 | break; | |
ef80654d WX |
1239 | case 'l': |
1240 | if (strstart(optarg, SNAPSHOT_OPT_BASE, NULL)) { | |
1241 | sn_opts = qemu_opts_parse(&internal_snapshot_opts, optarg, 0); | |
1242 | if (!sn_opts) { | |
1243 | error_report("Failed in parsing snapshot param '%s'", | |
1244 | optarg); | |
2dc8328b | 1245 | ret = -1; |
64bb01aa | 1246 | goto fail_getopt; |
ef80654d WX |
1247 | } |
1248 | } else { | |
1249 | snapshot_name = optarg; | |
1250 | } | |
1251 | break; | |
a22f123c KW |
1252 | case 'S': |
1253 | { | |
1254 | int64_t sval; | |
e36b3695 MA |
1255 | char *end; |
1256 | sval = strtosz_suffix(optarg, &end, STRTOSZ_DEFSUFFIX_B); | |
1257 | if (sval < 0 || *end) { | |
a22f123c | 1258 | error_report("Invalid minimum zero buffer size for sparse output specified"); |
2dc8328b | 1259 | ret = -1; |
64bb01aa | 1260 | goto fail_getopt; |
a22f123c KW |
1261 | } |
1262 | ||
1263 | min_sparse = sval / BDRV_SECTOR_SIZE; | |
1264 | break; | |
1265 | } | |
6b837bc4 JS |
1266 | case 'p': |
1267 | progress = 1; | |
1268 | break; | |
661a0f71 FS |
1269 | case 't': |
1270 | cache = optarg; | |
1271 | break; | |
f382d43a MR |
1272 | case 'q': |
1273 | quiet = true; | |
1274 | break; | |
b2e10493 AD |
1275 | case 'n': |
1276 | skip_create = 1; | |
1277 | break; | |
ea2384d3 FB |
1278 | } |
1279 | } | |
3b46e624 | 1280 | |
64bb01aa | 1281 | /* Initialize before goto out */ |
f382d43a MR |
1282 | if (quiet) { |
1283 | progress = 0; | |
1284 | } | |
64bb01aa KW |
1285 | qemu_progress_init(progress, 1.0); |
1286 | ||
f382d43a | 1287 | |
926c2d23 | 1288 | bs_n = argc - optind - 1; |
a283cb6e | 1289 | out_filename = bs_n >= 1 ? argv[argc - 1] : NULL; |
f58c7b35 | 1290 | |
2dc8328b | 1291 | if (options && has_help_option(options)) { |
4ac8aacd JS |
1292 | ret = print_block_option_help(out_filename, out_fmt); |
1293 | goto out; | |
1294 | } | |
1295 | ||
a283cb6e | 1296 | if (bs_n < 1) { |
ac1307ab | 1297 | error_exit("Must specify image file name"); |
a283cb6e KW |
1298 | } |
1299 | ||
1300 | ||
c2abccec | 1301 | if (bs_n > 1 && out_baseimg) { |
15654a6d JS |
1302 | error_report("-B makes no sense when concatenating multiple input " |
1303 | "images"); | |
31ca34b8 JS |
1304 | ret = -1; |
1305 | goto out; | |
c2abccec | 1306 | } |
f8111c24 | 1307 | |
6b837bc4 JS |
1308 | qemu_progress_print(0, 100); |
1309 | ||
7267c094 | 1310 | bs = g_malloc0(bs_n * sizeof(BlockDriverState *)); |
926c2d23 AZ |
1311 | |
1312 | total_sectors = 0; | |
1313 | for (bs_i = 0; bs_i < bs_n; bs_i++) { | |
9ffe3332 KW |
1314 | char *id = bs_n > 1 ? g_strdup_printf("source %d", bs_i) |
1315 | : g_strdup("source"); | |
1316 | bs[bs_i] = bdrv_new_open(id, argv[optind + bs_i], fmt, BDRV_O_FLAGS, | |
1317 | true, quiet); | |
1318 | g_free(id); | |
c2abccec | 1319 | if (!bs[bs_i]) { |
15654a6d | 1320 | error_report("Could not open '%s'", argv[optind + bs_i]); |
c2abccec MK |
1321 | ret = -1; |
1322 | goto out; | |
1323 | } | |
926c2d23 AZ |
1324 | bdrv_get_geometry(bs[bs_i], &bs_sectors); |
1325 | total_sectors += bs_sectors; | |
1326 | } | |
ea2384d3 | 1327 | |
ef80654d WX |
1328 | if (sn_opts) { |
1329 | ret = bdrv_snapshot_load_tmp(bs[0], | |
1330 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_ID), | |
1331 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_NAME), | |
1332 | &local_err); | |
1333 | } else if (snapshot_name != NULL) { | |
51ef6727 | 1334 | if (bs_n > 1) { |
6daf194d | 1335 | error_report("No support for concatenating multiple snapshot"); |
51ef6727 | 1336 | ret = -1; |
1337 | goto out; | |
1338 | } | |
7b4c4781 WX |
1339 | |
1340 | bdrv_snapshot_load_tmp_by_id_or_name(bs[0], snapshot_name, &local_err); | |
ef80654d | 1341 | } |
84d18f06 | 1342 | if (local_err) { |
ef80654d WX |
1343 | error_report("Failed to load snapshot: %s", |
1344 | error_get_pretty(local_err)); | |
1345 | error_free(local_err); | |
1346 | ret = -1; | |
1347 | goto out; | |
51ef6727 | 1348 | } |
1349 | ||
efa84d43 | 1350 | /* Find driver and parse its options */ |
ea2384d3 | 1351 | drv = bdrv_find_format(out_fmt); |
c2abccec | 1352 | if (!drv) { |
15654a6d | 1353 | error_report("Unknown file format '%s'", out_fmt); |
c2abccec MK |
1354 | ret = -1; |
1355 | goto out; | |
1356 | } | |
efa84d43 | 1357 | |
98289620 | 1358 | proto_drv = bdrv_find_protocol(out_filename, true); |
c2abccec | 1359 | if (!proto_drv) { |
15654a6d | 1360 | error_report("Unknown protocol '%s'", out_filename); |
c2abccec MK |
1361 | ret = -1; |
1362 | goto out; | |
1363 | } | |
b50cbabc MK |
1364 | |
1365 | create_options = append_option_parameters(create_options, | |
1366 | drv->create_options); | |
1367 | create_options = append_option_parameters(create_options, | |
1368 | proto_drv->create_options); | |
db08adf5 | 1369 | |
efa84d43 | 1370 | if (options) { |
b50cbabc | 1371 | param = parse_option_parameters(options, create_options, param); |
efa84d43 | 1372 | if (param == NULL) { |
15654a6d | 1373 | error_report("Invalid options for file format '%s'.", out_fmt); |
c2abccec MK |
1374 | ret = -1; |
1375 | goto out; | |
efa84d43 KW |
1376 | } |
1377 | } else { | |
b50cbabc | 1378 | param = parse_option_parameters("", create_options, param); |
efa84d43 KW |
1379 | } |
1380 | ||
1381 | set_option_parameter_int(param, BLOCK_OPT_SIZE, total_sectors * 512); | |
eec77d9e | 1382 | ret = add_old_style_options(out_fmt, param, out_baseimg, NULL); |
c2abccec MK |
1383 | if (ret < 0) { |
1384 | goto out; | |
1385 | } | |
efa84d43 | 1386 | |
a18953fb KW |
1387 | /* Get backing file name if -o backing_file was used */ |
1388 | out_baseimg_param = get_option_parameter(param, BLOCK_OPT_BACKING_FILE); | |
1389 | if (out_baseimg_param) { | |
1390 | out_baseimg = out_baseimg_param->value.s; | |
1391 | } | |
1392 | ||
efa84d43 | 1393 | /* Check if compression is supported */ |
eec77d9e | 1394 | if (compress) { |
efa84d43 KW |
1395 | QEMUOptionParameter *encryption = |
1396 | get_option_parameter(param, BLOCK_OPT_ENCRYPT); | |
41521fa4 KW |
1397 | QEMUOptionParameter *preallocation = |
1398 | get_option_parameter(param, BLOCK_OPT_PREALLOC); | |
efa84d43 KW |
1399 | |
1400 | if (!drv->bdrv_write_compressed) { | |
15654a6d | 1401 | error_report("Compression not supported for this file format"); |
c2abccec MK |
1402 | ret = -1; |
1403 | goto out; | |
efa84d43 KW |
1404 | } |
1405 | ||
1406 | if (encryption && encryption->value.n) { | |
15654a6d JS |
1407 | error_report("Compression and encryption not supported at " |
1408 | "the same time"); | |
c2abccec MK |
1409 | ret = -1; |
1410 | goto out; | |
efa84d43 | 1411 | } |
41521fa4 KW |
1412 | |
1413 | if (preallocation && preallocation->value.s | |
1414 | && strcmp(preallocation->value.s, "off")) | |
1415 | { | |
1416 | error_report("Compression and preallocation not supported at " | |
1417 | "the same time"); | |
1418 | ret = -1; | |
1419 | goto out; | |
1420 | } | |
efa84d43 KW |
1421 | } |
1422 | ||
b2e10493 AD |
1423 | if (!skip_create) { |
1424 | /* Create the new image */ | |
cc84d90f | 1425 | ret = bdrv_create(drv, out_filename, param, &local_err); |
b2e10493 | 1426 | if (ret < 0) { |
cc84d90f HR |
1427 | error_report("%s: error while converting %s: %s", |
1428 | out_filename, out_fmt, error_get_pretty(local_err)); | |
1429 | error_free(local_err); | |
b2e10493 | 1430 | goto out; |
ea2384d3 FB |
1431 | } |
1432 | } | |
3b46e624 | 1433 | |
5a37b60a | 1434 | flags = min_sparse ? (BDRV_O_RDWR | BDRV_O_UNMAP) : BDRV_O_RDWR; |
c3993cdc | 1435 | ret = bdrv_parse_cache_flags(cache, &flags); |
661a0f71 FS |
1436 | if (ret < 0) { |
1437 | error_report("Invalid cache option: %s", cache); | |
1438 | return -1; | |
1439 | } | |
1440 | ||
9ffe3332 | 1441 | out_bs = bdrv_new_open("target", out_filename, out_fmt, flags, true, quiet); |
c2abccec MK |
1442 | if (!out_bs) { |
1443 | ret = -1; | |
1444 | goto out; | |
1445 | } | |
ea2384d3 | 1446 | |
926c2d23 AZ |
1447 | bs_i = 0; |
1448 | bs_offset = 0; | |
1449 | bdrv_get_geometry(bs[0], &bs_sectors); | |
f2521c90 PL |
1450 | |
1451 | /* increase bufsectors from the default 4096 (2M) if opt_transfer_length | |
1452 | * or discard_alignment of the out_bs is greater. Limit to 32768 (16MB) | |
1453 | * as maximum. */ | |
1454 | bufsectors = MIN(32768, | |
1455 | MAX(bufsectors, MAX(out_bs->bl.opt_transfer_length, | |
1456 | out_bs->bl.discard_alignment)) | |
1457 | ); | |
1458 | ||
1459 | buf = qemu_blockalign(out_bs, bufsectors * BDRV_SECTOR_SIZE); | |
926c2d23 | 1460 | |
b2e10493 AD |
1461 | if (skip_create) { |
1462 | int64_t output_length = bdrv_getlength(out_bs); | |
1463 | if (output_length < 0) { | |
1464 | error_report("unable to get output image length: %s\n", | |
1465 | strerror(-output_length)); | |
1466 | ret = -1; | |
1467 | goto out; | |
1468 | } else if (output_length < total_sectors << BDRV_SECTOR_BITS) { | |
1469 | error_report("output file is smaller than input file"); | |
1470 | ret = -1; | |
1471 | goto out; | |
1472 | } | |
1473 | } | |
1474 | ||
24f833cd PL |
1475 | cluster_sectors = 0; |
1476 | ret = bdrv_get_info(out_bs, &bdi); | |
1477 | if (ret < 0) { | |
1478 | if (compress) { | |
15654a6d | 1479 | error_report("could not get block driver info"); |
c2abccec MK |
1480 | goto out; |
1481 | } | |
24f833cd PL |
1482 | } else { |
1483 | cluster_sectors = bdi.cluster_size / BDRV_SECTOR_SIZE; | |
1484 | } | |
1485 | ||
1486 | if (compress) { | |
1487 | if (cluster_sectors <= 0 || cluster_sectors > bufsectors) { | |
15654a6d | 1488 | error_report("invalid cluster size"); |
c2abccec MK |
1489 | ret = -1; |
1490 | goto out; | |
1491 | } | |
ea2384d3 | 1492 | sector_num = 0; |
6b837bc4 JS |
1493 | |
1494 | nb_sectors = total_sectors; | |
6b837bc4 | 1495 | |
ea2384d3 | 1496 | for(;;) { |
926c2d23 AZ |
1497 | int64_t bs_num; |
1498 | int remainder; | |
1499 | uint8_t *buf2; | |
1500 | ||
ea2384d3 FB |
1501 | nb_sectors = total_sectors - sector_num; |
1502 | if (nb_sectors <= 0) | |
1503 | break; | |
1504 | if (nb_sectors >= cluster_sectors) | |
1505 | n = cluster_sectors; | |
1506 | else | |
1507 | n = nb_sectors; | |
926c2d23 AZ |
1508 | |
1509 | bs_num = sector_num - bs_offset; | |
1510 | assert (bs_num >= 0); | |
1511 | remainder = n; | |
1512 | buf2 = buf; | |
1513 | while (remainder > 0) { | |
1514 | int nlow; | |
1515 | while (bs_num == bs_sectors) { | |
1516 | bs_i++; | |
1517 | assert (bs_i < bs_n); | |
1518 | bs_offset += bs_sectors; | |
1519 | bdrv_get_geometry(bs[bs_i], &bs_sectors); | |
1520 | bs_num = 0; | |
0bfcd599 BS |
1521 | /* printf("changing part: sector_num=%" PRId64 ", " |
1522 | "bs_i=%d, bs_offset=%" PRId64 ", bs_sectors=%" PRId64 | |
1523 | "\n", sector_num, bs_i, bs_offset, bs_sectors); */ | |
926c2d23 AZ |
1524 | } |
1525 | assert (bs_num < bs_sectors); | |
1526 | ||
1527 | nlow = (remainder > bs_sectors - bs_num) ? bs_sectors - bs_num : remainder; | |
1528 | ||
c2abccec MK |
1529 | ret = bdrv_read(bs[bs_i], bs_num, buf2, nlow); |
1530 | if (ret < 0) { | |
3fba9d81 SH |
1531 | error_report("error while reading sector %" PRId64 ": %s", |
1532 | bs_num, strerror(-ret)); | |
c2abccec MK |
1533 | goto out; |
1534 | } | |
926c2d23 AZ |
1535 | |
1536 | buf2 += nlow * 512; | |
1537 | bs_num += nlow; | |
1538 | ||
1539 | remainder -= nlow; | |
1540 | } | |
1541 | assert (remainder == 0); | |
1542 | ||
54f106d5 SH |
1543 | if (!buffer_is_zero(buf, n * BDRV_SECTOR_SIZE)) { |
1544 | ret = bdrv_write_compressed(out_bs, sector_num, buf, n); | |
c2abccec | 1545 | if (ret != 0) { |
3fba9d81 SH |
1546 | error_report("error while compressing sector %" PRId64 |
1547 | ": %s", sector_num, strerror(-ret)); | |
c2abccec MK |
1548 | goto out; |
1549 | } | |
ea2384d3 FB |
1550 | } |
1551 | sector_num += n; | |
13c28af8 | 1552 | qemu_progress_print(100.0 * sector_num / total_sectors, 0); |
ea2384d3 | 1553 | } |
faea38e7 FB |
1554 | /* signal EOF to align */ |
1555 | bdrv_write_compressed(out_bs, 0, NULL, 0); | |
ea2384d3 | 1556 | } else { |
802c3d4c PL |
1557 | int64_t sectors_to_read, sectors_read, sector_num_next_status; |
1558 | bool count_allocated_sectors; | |
11b6699a | 1559 | int has_zero_init = min_sparse ? bdrv_has_zero_init(out_bs) : 0; |
f2feebbd | 1560 | |
5a37b60a PL |
1561 | if (!has_zero_init && bdrv_can_write_zeroes_with_unmap(out_bs)) { |
1562 | ret = bdrv_make_zero(out_bs, BDRV_REQ_MAY_UNMAP); | |
1563 | if (ret < 0) { | |
1564 | goto out; | |
1565 | } | |
1566 | has_zero_init = 1; | |
1567 | } | |
1568 | ||
802c3d4c PL |
1569 | sectors_to_read = total_sectors; |
1570 | count_allocated_sectors = progress && (out_baseimg || has_zero_init); | |
1571 | restart: | |
f58c7b35 | 1572 | sector_num = 0; // total number of sectors converted so far |
802c3d4c PL |
1573 | sectors_read = 0; |
1574 | sector_num_next_status = 0; | |
6b837bc4 | 1575 | |
ea2384d3 FB |
1576 | for(;;) { |
1577 | nb_sectors = total_sectors - sector_num; | |
b8fb60da | 1578 | if (nb_sectors <= 0) { |
802c3d4c PL |
1579 | if (count_allocated_sectors) { |
1580 | sectors_to_read = sectors_read; | |
1581 | count_allocated_sectors = false; | |
1582 | goto restart; | |
1583 | } | |
13c28af8 | 1584 | ret = 0; |
ea2384d3 | 1585 | break; |
b8fb60da | 1586 | } |
926c2d23 AZ |
1587 | |
1588 | while (sector_num - bs_offset >= bs_sectors) { | |
1589 | bs_i ++; | |
1590 | assert (bs_i < bs_n); | |
1591 | bs_offset += bs_sectors; | |
1592 | bdrv_get_geometry(bs[bs_i], &bs_sectors); | |
0bfcd599 BS |
1593 | /* printf("changing part: sector_num=%" PRId64 ", bs_i=%d, " |
1594 | "bs_offset=%" PRId64 ", bs_sectors=%" PRId64 "\n", | |
926c2d23 AZ |
1595 | sector_num, bs_i, bs_offset, bs_sectors); */ |
1596 | } | |
1597 | ||
13c28af8 PL |
1598 | if ((out_baseimg || has_zero_init) && |
1599 | sector_num >= sector_num_next_status) { | |
1600 | n = nb_sectors > INT_MAX ? INT_MAX : nb_sectors; | |
1601 | ret = bdrv_get_block_status(bs[bs_i], sector_num - bs_offset, | |
1602 | n, &n1); | |
e4a86f88 | 1603 | if (ret < 0) { |
13c28af8 PL |
1604 | error_report("error while reading block status of sector %" |
1605 | PRId64 ": %s", sector_num - bs_offset, | |
1606 | strerror(-ret)); | |
e4a86f88 PB |
1607 | goto out; |
1608 | } | |
13c28af8 PL |
1609 | /* If the output image is zero initialized, we are not working |
1610 | * on a shared base and the input is zero we can skip the next | |
1611 | * n1 sectors */ | |
1612 | if (has_zero_init && !out_baseimg && (ret & BDRV_BLOCK_ZERO)) { | |
e4a86f88 PB |
1613 | sector_num += n1; |
1614 | continue; | |
93c65b47 | 1615 | } |
13c28af8 PL |
1616 | /* If the output image is being created as a copy on write |
1617 | * image, assume that sectors which are unallocated in the | |
1618 | * input image are present in both the output's and input's | |
1619 | * base images (no need to copy them). */ | |
1620 | if (out_baseimg) { | |
1621 | if (!(ret & BDRV_BLOCK_DATA)) { | |
1622 | sector_num += n1; | |
1623 | continue; | |
1624 | } | |
1625 | /* The next 'n1' sectors are allocated in the input image. | |
1626 | * Copy only those as they may be followed by unallocated | |
1627 | * sectors. */ | |
1628 | nb_sectors = n1; | |
1629 | } | |
1630 | /* avoid redundant callouts to get_block_status */ | |
1631 | sector_num_next_status = sector_num + n1; | |
f58c7b35 TS |
1632 | } |
1633 | ||
f2521c90 | 1634 | n = MIN(nb_sectors, bufsectors); |
24f833cd PL |
1635 | |
1636 | /* round down request length to an aligned sector, but | |
1637 | * do not bother doing this on short requests. They happen | |
1638 | * when we found an all-zero area, and the next sector to | |
1639 | * write will not be sector_num + n. */ | |
1640 | if (cluster_sectors > 0 && n >= cluster_sectors) { | |
1641 | int64_t next_aligned_sector = (sector_num + n); | |
1642 | next_aligned_sector -= next_aligned_sector % cluster_sectors; | |
1643 | if (sector_num + n > next_aligned_sector) { | |
1644 | n = next_aligned_sector - sector_num; | |
1645 | } | |
1646 | } | |
1647 | ||
13c28af8 | 1648 | n = MIN(n, bs_sectors - (sector_num - bs_offset)); |
13c28af8 | 1649 | |
802c3d4c PL |
1650 | sectors_read += n; |
1651 | if (count_allocated_sectors) { | |
1652 | sector_num += n; | |
1653 | continue; | |
1654 | } | |
1655 | ||
1656 | n1 = n; | |
c2abccec MK |
1657 | ret = bdrv_read(bs[bs_i], sector_num - bs_offset, buf, n); |
1658 | if (ret < 0) { | |
3fba9d81 SH |
1659 | error_report("error while reading sector %" PRId64 ": %s", |
1660 | sector_num - bs_offset, strerror(-ret)); | |
c2abccec MK |
1661 | goto out; |
1662 | } | |
ea2384d3 FB |
1663 | /* NOTE: at the same time we convert, we do not write zero |
1664 | sectors to have a chance to compress the image. Ideally, we | |
1665 | should add a specific call to have the info to go faster */ | |
1666 | buf1 = buf; | |
1667 | while (n > 0) { | |
11212d8f | 1668 | if (!has_zero_init || |
a22f123c | 1669 | is_allocated_sectors_min(buf1, n, &n1, min_sparse)) { |
c2abccec MK |
1670 | ret = bdrv_write(out_bs, sector_num, buf1, n1); |
1671 | if (ret < 0) { | |
3fba9d81 SH |
1672 | error_report("error while writing sector %" PRId64 |
1673 | ": %s", sector_num, strerror(-ret)); | |
c2abccec MK |
1674 | goto out; |
1675 | } | |
ea2384d3 FB |
1676 | } |
1677 | sector_num += n1; | |
1678 | n -= n1; | |
1679 | buf1 += n1 * 512; | |
1680 | } | |
802c3d4c | 1681 | qemu_progress_print(100.0 * sectors_read / sectors_to_read, 0); |
ea2384d3 FB |
1682 | } |
1683 | } | |
c2abccec | 1684 | out: |
13c28af8 PL |
1685 | if (!ret) { |
1686 | qemu_progress_print(100, 0); | |
1687 | } | |
6b837bc4 | 1688 | qemu_progress_end(); |
c2abccec MK |
1689 | free_option_parameters(create_options); |
1690 | free_option_parameters(param); | |
bb1c0597 | 1691 | qemu_vfree(buf); |
ef80654d WX |
1692 | if (sn_opts) { |
1693 | qemu_opts_del(sn_opts); | |
1694 | } | |
c2abccec | 1695 | if (out_bs) { |
4f6fd349 | 1696 | bdrv_unref(out_bs); |
c2abccec | 1697 | } |
31ca34b8 JS |
1698 | if (bs) { |
1699 | for (bs_i = 0; bs_i < bs_n; bs_i++) { | |
1700 | if (bs[bs_i]) { | |
4f6fd349 | 1701 | bdrv_unref(bs[bs_i]); |
31ca34b8 | 1702 | } |
c2abccec | 1703 | } |
7267c094 | 1704 | g_free(bs); |
c2abccec | 1705 | } |
64bb01aa KW |
1706 | fail_getopt: |
1707 | g_free(options); | |
1708 | ||
c2abccec MK |
1709 | if (ret) { |
1710 | return 1; | |
1711 | } | |
ea2384d3 FB |
1712 | return 0; |
1713 | } | |
1714 | ||
57d1a2b6 | 1715 | |
faea38e7 FB |
1716 | static void dump_snapshots(BlockDriverState *bs) |
1717 | { | |
1718 | QEMUSnapshotInfo *sn_tab, *sn; | |
1719 | int nb_sns, i; | |
faea38e7 FB |
1720 | |
1721 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
1722 | if (nb_sns <= 0) | |
1723 | return; | |
1724 | printf("Snapshot list:\n"); | |
5b917044 WX |
1725 | bdrv_snapshot_dump(fprintf, stdout, NULL); |
1726 | printf("\n"); | |
faea38e7 FB |
1727 | for(i = 0; i < nb_sns; i++) { |
1728 | sn = &sn_tab[i]; | |
5b917044 WX |
1729 | bdrv_snapshot_dump(fprintf, stdout, sn); |
1730 | printf("\n"); | |
faea38e7 | 1731 | } |
7267c094 | 1732 | g_free(sn_tab); |
faea38e7 FB |
1733 | } |
1734 | ||
9699bf0d SH |
1735 | static void dump_json_image_info_list(ImageInfoList *list) |
1736 | { | |
4399c438 | 1737 | Error *local_err = NULL; |
9699bf0d SH |
1738 | QString *str; |
1739 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
1740 | QObject *obj; | |
1741 | visit_type_ImageInfoList(qmp_output_get_visitor(ov), | |
4399c438 | 1742 | &list, NULL, &local_err); |
9699bf0d SH |
1743 | obj = qmp_output_get_qobject(ov); |
1744 | str = qobject_to_json_pretty(obj); | |
1745 | assert(str != NULL); | |
1746 | printf("%s\n", qstring_get_str(str)); | |
1747 | qobject_decref(obj); | |
1748 | qmp_output_visitor_cleanup(ov); | |
1749 | QDECREF(str); | |
1750 | } | |
1751 | ||
c054b3fd BC |
1752 | static void dump_json_image_info(ImageInfo *info) |
1753 | { | |
4399c438 | 1754 | Error *local_err = NULL; |
c054b3fd BC |
1755 | QString *str; |
1756 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
1757 | QObject *obj; | |
1758 | visit_type_ImageInfo(qmp_output_get_visitor(ov), | |
4399c438 | 1759 | &info, NULL, &local_err); |
c054b3fd BC |
1760 | obj = qmp_output_get_qobject(ov); |
1761 | str = qobject_to_json_pretty(obj); | |
1762 | assert(str != NULL); | |
1763 | printf("%s\n", qstring_get_str(str)); | |
1764 | qobject_decref(obj); | |
1765 | qmp_output_visitor_cleanup(ov); | |
1766 | QDECREF(str); | |
1767 | } | |
1768 | ||
9699bf0d SH |
1769 | static void dump_human_image_info_list(ImageInfoList *list) |
1770 | { | |
1771 | ImageInfoList *elem; | |
1772 | bool delim = false; | |
1773 | ||
1774 | for (elem = list; elem; elem = elem->next) { | |
1775 | if (delim) { | |
1776 | printf("\n"); | |
1777 | } | |
1778 | delim = true; | |
1779 | ||
5b917044 | 1780 | bdrv_image_info_dump(fprintf, stdout, elem->value); |
9699bf0d SH |
1781 | } |
1782 | } | |
1783 | ||
1784 | static gboolean str_equal_func(gconstpointer a, gconstpointer b) | |
1785 | { | |
1786 | return strcmp(a, b) == 0; | |
1787 | } | |
1788 | ||
1789 | /** | |
1790 | * Open an image file chain and return an ImageInfoList | |
1791 | * | |
1792 | * @filename: topmost image filename | |
1793 | * @fmt: topmost image format (may be NULL to autodetect) | |
1794 | * @chain: true - enumerate entire backing file chain | |
1795 | * false - only topmost image file | |
1796 | * | |
1797 | * Returns a list of ImageInfo objects or NULL if there was an error opening an | |
1798 | * image file. If there was an error a message will have been printed to | |
1799 | * stderr. | |
1800 | */ | |
1801 | static ImageInfoList *collect_image_info_list(const char *filename, | |
1802 | const char *fmt, | |
1803 | bool chain) | |
1804 | { | |
1805 | ImageInfoList *head = NULL; | |
1806 | ImageInfoList **last = &head; | |
1807 | GHashTable *filenames; | |
43526ec8 | 1808 | Error *err = NULL; |
9699bf0d SH |
1809 | |
1810 | filenames = g_hash_table_new_full(g_str_hash, str_equal_func, NULL, NULL); | |
1811 | ||
1812 | while (filename) { | |
1813 | BlockDriverState *bs; | |
1814 | ImageInfo *info; | |
1815 | ImageInfoList *elem; | |
1816 | ||
1817 | if (g_hash_table_lookup_extended(filenames, filename, NULL, NULL)) { | |
1818 | error_report("Backing file '%s' creates an infinite loop.", | |
1819 | filename); | |
1820 | goto err; | |
1821 | } | |
1822 | g_hash_table_insert(filenames, (gpointer)filename, NULL); | |
1823 | ||
9ffe3332 KW |
1824 | bs = bdrv_new_open("image", filename, fmt, |
1825 | BDRV_O_FLAGS | BDRV_O_NO_BACKING, false, false); | |
9699bf0d SH |
1826 | if (!bs) { |
1827 | goto err; | |
1828 | } | |
1829 | ||
43526ec8 | 1830 | bdrv_query_image_info(bs, &info, &err); |
84d18f06 | 1831 | if (err) { |
43526ec8 WX |
1832 | error_report("%s", error_get_pretty(err)); |
1833 | error_free(err); | |
bdf866fe | 1834 | bdrv_unref(bs); |
43526ec8 | 1835 | goto err; |
fb0ed453 | 1836 | } |
9699bf0d SH |
1837 | |
1838 | elem = g_new0(ImageInfoList, 1); | |
1839 | elem->value = info; | |
1840 | *last = elem; | |
1841 | last = &elem->next; | |
1842 | ||
4f6fd349 | 1843 | bdrv_unref(bs); |
9699bf0d SH |
1844 | |
1845 | filename = fmt = NULL; | |
1846 | if (chain) { | |
1847 | if (info->has_full_backing_filename) { | |
1848 | filename = info->full_backing_filename; | |
1849 | } else if (info->has_backing_filename) { | |
1850 | filename = info->backing_filename; | |
1851 | } | |
1852 | if (info->has_backing_filename_format) { | |
1853 | fmt = info->backing_filename_format; | |
1854 | } | |
1855 | } | |
1856 | } | |
1857 | g_hash_table_destroy(filenames); | |
1858 | return head; | |
1859 | ||
1860 | err: | |
1861 | qapi_free_ImageInfoList(head); | |
1862 | g_hash_table_destroy(filenames); | |
1863 | return NULL; | |
1864 | } | |
1865 | ||
c054b3fd BC |
1866 | static int img_info(int argc, char **argv) |
1867 | { | |
1868 | int c; | |
1869 | OutputFormat output_format = OFORMAT_HUMAN; | |
9699bf0d | 1870 | bool chain = false; |
c054b3fd | 1871 | const char *filename, *fmt, *output; |
9699bf0d | 1872 | ImageInfoList *list; |
c054b3fd | 1873 | |
ea2384d3 | 1874 | fmt = NULL; |
c054b3fd | 1875 | output = NULL; |
ea2384d3 | 1876 | for(;;) { |
c054b3fd BC |
1877 | int option_index = 0; |
1878 | static const struct option long_options[] = { | |
1879 | {"help", no_argument, 0, 'h'}, | |
1880 | {"format", required_argument, 0, 'f'}, | |
1881 | {"output", required_argument, 0, OPTION_OUTPUT}, | |
9699bf0d | 1882 | {"backing-chain", no_argument, 0, OPTION_BACKING_CHAIN}, |
c054b3fd BC |
1883 | {0, 0, 0, 0} |
1884 | }; | |
1885 | c = getopt_long(argc, argv, "f:h", | |
1886 | long_options, &option_index); | |
b8fb60da | 1887 | if (c == -1) { |
ea2384d3 | 1888 | break; |
b8fb60da | 1889 | } |
ea2384d3 | 1890 | switch(c) { |
ef87394c | 1891 | case '?': |
ea2384d3 FB |
1892 | case 'h': |
1893 | help(); | |
1894 | break; | |
1895 | case 'f': | |
1896 | fmt = optarg; | |
1897 | break; | |
c054b3fd BC |
1898 | case OPTION_OUTPUT: |
1899 | output = optarg; | |
1900 | break; | |
9699bf0d SH |
1901 | case OPTION_BACKING_CHAIN: |
1902 | chain = true; | |
1903 | break; | |
ea2384d3 FB |
1904 | } |
1905 | } | |
fc11eb26 | 1906 | if (optind != argc - 1) { |
ac1307ab | 1907 | error_exit("Expecting one image file name"); |
b8fb60da | 1908 | } |
ea2384d3 FB |
1909 | filename = argv[optind++]; |
1910 | ||
c054b3fd BC |
1911 | if (output && !strcmp(output, "json")) { |
1912 | output_format = OFORMAT_JSON; | |
1913 | } else if (output && !strcmp(output, "human")) { | |
1914 | output_format = OFORMAT_HUMAN; | |
1915 | } else if (output) { | |
1916 | error_report("--output must be used with human or json as argument."); | |
c2abccec MK |
1917 | return 1; |
1918 | } | |
c054b3fd | 1919 | |
9699bf0d SH |
1920 | list = collect_image_info_list(filename, fmt, chain); |
1921 | if (!list) { | |
c2abccec | 1922 | return 1; |
faea38e7 | 1923 | } |
c054b3fd | 1924 | |
c054b3fd BC |
1925 | switch (output_format) { |
1926 | case OFORMAT_HUMAN: | |
9699bf0d | 1927 | dump_human_image_info_list(list); |
c054b3fd BC |
1928 | break; |
1929 | case OFORMAT_JSON: | |
9699bf0d SH |
1930 | if (chain) { |
1931 | dump_json_image_info_list(list); | |
1932 | } else { | |
1933 | dump_json_image_info(list->value); | |
1934 | } | |
c054b3fd | 1935 | break; |
faea38e7 | 1936 | } |
c054b3fd | 1937 | |
9699bf0d | 1938 | qapi_free_ImageInfoList(list); |
ea2384d3 FB |
1939 | return 0; |
1940 | } | |
1941 | ||
4c93a13b PB |
1942 | |
1943 | typedef struct MapEntry { | |
1944 | int flags; | |
1945 | int depth; | |
1946 | int64_t start; | |
1947 | int64_t length; | |
1948 | int64_t offset; | |
1949 | BlockDriverState *bs; | |
1950 | } MapEntry; | |
1951 | ||
1952 | static void dump_map_entry(OutputFormat output_format, MapEntry *e, | |
1953 | MapEntry *next) | |
1954 | { | |
1955 | switch (output_format) { | |
1956 | case OFORMAT_HUMAN: | |
1957 | if ((e->flags & BDRV_BLOCK_DATA) && | |
1958 | !(e->flags & BDRV_BLOCK_OFFSET_VALID)) { | |
1959 | error_report("File contains external, encrypted or compressed clusters."); | |
1960 | exit(1); | |
1961 | } | |
1962 | if ((e->flags & (BDRV_BLOCK_DATA|BDRV_BLOCK_ZERO)) == BDRV_BLOCK_DATA) { | |
1963 | printf("%#-16"PRIx64"%#-16"PRIx64"%#-16"PRIx64"%s\n", | |
1964 | e->start, e->length, e->offset, e->bs->filename); | |
1965 | } | |
1966 | /* This format ignores the distinction between 0, ZERO and ZERO|DATA. | |
1967 | * Modify the flags here to allow more coalescing. | |
1968 | */ | |
1969 | if (next && | |
1970 | (next->flags & (BDRV_BLOCK_DATA|BDRV_BLOCK_ZERO)) != BDRV_BLOCK_DATA) { | |
1971 | next->flags &= ~BDRV_BLOCK_DATA; | |
1972 | next->flags |= BDRV_BLOCK_ZERO; | |
1973 | } | |
1974 | break; | |
1975 | case OFORMAT_JSON: | |
1976 | printf("%s{ \"start\": %"PRId64", \"length\": %"PRId64", \"depth\": %d," | |
1977 | " \"zero\": %s, \"data\": %s", | |
1978 | (e->start == 0 ? "[" : ",\n"), | |
1979 | e->start, e->length, e->depth, | |
1980 | (e->flags & BDRV_BLOCK_ZERO) ? "true" : "false", | |
1981 | (e->flags & BDRV_BLOCK_DATA) ? "true" : "false"); | |
1982 | if (e->flags & BDRV_BLOCK_OFFSET_VALID) { | |
c745bfb4 | 1983 | printf(", \"offset\": %"PRId64"", e->offset); |
4c93a13b PB |
1984 | } |
1985 | putchar('}'); | |
1986 | ||
1987 | if (!next) { | |
1988 | printf("]\n"); | |
1989 | } | |
1990 | break; | |
1991 | } | |
1992 | } | |
1993 | ||
1994 | static int get_block_status(BlockDriverState *bs, int64_t sector_num, | |
1995 | int nb_sectors, MapEntry *e) | |
1996 | { | |
1997 | int64_t ret; | |
1998 | int depth; | |
1999 | ||
2000 | /* As an optimization, we could cache the current range of unallocated | |
2001 | * clusters in each file of the chain, and avoid querying the same | |
2002 | * range repeatedly. | |
2003 | */ | |
2004 | ||
2005 | depth = 0; | |
2006 | for (;;) { | |
2007 | ret = bdrv_get_block_status(bs, sector_num, nb_sectors, &nb_sectors); | |
2008 | if (ret < 0) { | |
2009 | return ret; | |
2010 | } | |
2011 | assert(nb_sectors); | |
2012 | if (ret & (BDRV_BLOCK_ZERO|BDRV_BLOCK_DATA)) { | |
2013 | break; | |
2014 | } | |
2015 | bs = bs->backing_hd; | |
2016 | if (bs == NULL) { | |
2017 | ret = 0; | |
2018 | break; | |
2019 | } | |
2020 | ||
2021 | depth++; | |
2022 | } | |
2023 | ||
2024 | e->start = sector_num * BDRV_SECTOR_SIZE; | |
2025 | e->length = nb_sectors * BDRV_SECTOR_SIZE; | |
2026 | e->flags = ret & ~BDRV_BLOCK_OFFSET_MASK; | |
2027 | e->offset = ret & BDRV_BLOCK_OFFSET_MASK; | |
2028 | e->depth = depth; | |
2029 | e->bs = bs; | |
2030 | return 0; | |
2031 | } | |
2032 | ||
2033 | static int img_map(int argc, char **argv) | |
2034 | { | |
2035 | int c; | |
2036 | OutputFormat output_format = OFORMAT_HUMAN; | |
2037 | BlockDriverState *bs; | |
2038 | const char *filename, *fmt, *output; | |
2039 | int64_t length; | |
2040 | MapEntry curr = { .length = 0 }, next; | |
2041 | int ret = 0; | |
2042 | ||
2043 | fmt = NULL; | |
2044 | output = NULL; | |
2045 | for (;;) { | |
2046 | int option_index = 0; | |
2047 | static const struct option long_options[] = { | |
2048 | {"help", no_argument, 0, 'h'}, | |
2049 | {"format", required_argument, 0, 'f'}, | |
2050 | {"output", required_argument, 0, OPTION_OUTPUT}, | |
2051 | {0, 0, 0, 0} | |
2052 | }; | |
2053 | c = getopt_long(argc, argv, "f:h", | |
2054 | long_options, &option_index); | |
2055 | if (c == -1) { | |
2056 | break; | |
2057 | } | |
2058 | switch (c) { | |
2059 | case '?': | |
2060 | case 'h': | |
2061 | help(); | |
2062 | break; | |
2063 | case 'f': | |
2064 | fmt = optarg; | |
2065 | break; | |
2066 | case OPTION_OUTPUT: | |
2067 | output = optarg; | |
2068 | break; | |
2069 | } | |
2070 | } | |
ac1307ab FZ |
2071 | if (optind != argc - 1) { |
2072 | error_exit("Expecting one image file name"); | |
4c93a13b | 2073 | } |
ac1307ab | 2074 | filename = argv[optind]; |
4c93a13b PB |
2075 | |
2076 | if (output && !strcmp(output, "json")) { | |
2077 | output_format = OFORMAT_JSON; | |
2078 | } else if (output && !strcmp(output, "human")) { | |
2079 | output_format = OFORMAT_HUMAN; | |
2080 | } else if (output) { | |
2081 | error_report("--output must be used with human or json as argument."); | |
2082 | return 1; | |
2083 | } | |
2084 | ||
9ffe3332 | 2085 | bs = bdrv_new_open("image", filename, fmt, BDRV_O_FLAGS, true, false); |
4c93a13b PB |
2086 | if (!bs) { |
2087 | return 1; | |
2088 | } | |
2089 | ||
2090 | if (output_format == OFORMAT_HUMAN) { | |
2091 | printf("%-16s%-16s%-16s%s\n", "Offset", "Length", "Mapped to", "File"); | |
2092 | } | |
2093 | ||
2094 | length = bdrv_getlength(bs); | |
2095 | while (curr.start + curr.length < length) { | |
2096 | int64_t nsectors_left; | |
2097 | int64_t sector_num; | |
2098 | int n; | |
2099 | ||
2100 | sector_num = (curr.start + curr.length) >> BDRV_SECTOR_BITS; | |
2101 | ||
2102 | /* Probe up to 1 GiB at a time. */ | |
2103 | nsectors_left = DIV_ROUND_UP(length, BDRV_SECTOR_SIZE) - sector_num; | |
2104 | n = MIN(1 << (30 - BDRV_SECTOR_BITS), nsectors_left); | |
2105 | ret = get_block_status(bs, sector_num, n, &next); | |
2106 | ||
2107 | if (ret < 0) { | |
2108 | error_report("Could not read file metadata: %s", strerror(-ret)); | |
2109 | goto out; | |
2110 | } | |
2111 | ||
2112 | if (curr.length != 0 && curr.flags == next.flags && | |
2113 | curr.depth == next.depth && | |
2114 | ((curr.flags & BDRV_BLOCK_OFFSET_VALID) == 0 || | |
2115 | curr.offset + curr.length == next.offset)) { | |
2116 | curr.length += next.length; | |
2117 | continue; | |
2118 | } | |
2119 | ||
2120 | if (curr.length > 0) { | |
2121 | dump_map_entry(output_format, &curr, &next); | |
2122 | } | |
2123 | curr = next; | |
2124 | } | |
2125 | ||
2126 | dump_map_entry(output_format, &curr, NULL); | |
2127 | ||
2128 | out: | |
2129 | bdrv_unref(bs); | |
2130 | return ret < 0; | |
2131 | } | |
2132 | ||
f7b4a940 AL |
2133 | #define SNAPSHOT_LIST 1 |
2134 | #define SNAPSHOT_CREATE 2 | |
2135 | #define SNAPSHOT_APPLY 3 | |
2136 | #define SNAPSHOT_DELETE 4 | |
2137 | ||
153859be | 2138 | static int img_snapshot(int argc, char **argv) |
f7b4a940 AL |
2139 | { |
2140 | BlockDriverState *bs; | |
2141 | QEMUSnapshotInfo sn; | |
2142 | char *filename, *snapshot_name = NULL; | |
c2abccec | 2143 | int c, ret = 0, bdrv_oflags; |
f7b4a940 AL |
2144 | int action = 0; |
2145 | qemu_timeval tv; | |
f382d43a | 2146 | bool quiet = false; |
a89d89d3 | 2147 | Error *err = NULL; |
f7b4a940 | 2148 | |
710da702 | 2149 | bdrv_oflags = BDRV_O_FLAGS | BDRV_O_RDWR; |
f7b4a940 AL |
2150 | /* Parse commandline parameters */ |
2151 | for(;;) { | |
f382d43a | 2152 | c = getopt(argc, argv, "la:c:d:hq"); |
b8fb60da | 2153 | if (c == -1) { |
f7b4a940 | 2154 | break; |
b8fb60da | 2155 | } |
f7b4a940 | 2156 | switch(c) { |
ef87394c | 2157 | case '?': |
f7b4a940 AL |
2158 | case 'h': |
2159 | help(); | |
153859be | 2160 | return 0; |
f7b4a940 AL |
2161 | case 'l': |
2162 | if (action) { | |
ac1307ab | 2163 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2164 | return 0; |
f7b4a940 AL |
2165 | } |
2166 | action = SNAPSHOT_LIST; | |
f5edb014 | 2167 | bdrv_oflags &= ~BDRV_O_RDWR; /* no need for RW */ |
f7b4a940 AL |
2168 | break; |
2169 | case 'a': | |
2170 | if (action) { | |
ac1307ab | 2171 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2172 | return 0; |
f7b4a940 AL |
2173 | } |
2174 | action = SNAPSHOT_APPLY; | |
2175 | snapshot_name = optarg; | |
2176 | break; | |
2177 | case 'c': | |
2178 | if (action) { | |
ac1307ab | 2179 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2180 | return 0; |
f7b4a940 AL |
2181 | } |
2182 | action = SNAPSHOT_CREATE; | |
2183 | snapshot_name = optarg; | |
2184 | break; | |
2185 | case 'd': | |
2186 | if (action) { | |
ac1307ab | 2187 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2188 | return 0; |
f7b4a940 AL |
2189 | } |
2190 | action = SNAPSHOT_DELETE; | |
2191 | snapshot_name = optarg; | |
2192 | break; | |
f382d43a MR |
2193 | case 'q': |
2194 | quiet = true; | |
2195 | break; | |
f7b4a940 AL |
2196 | } |
2197 | } | |
2198 | ||
fc11eb26 | 2199 | if (optind != argc - 1) { |
ac1307ab | 2200 | error_exit("Expecting one image file name"); |
b8fb60da | 2201 | } |
f7b4a940 AL |
2202 | filename = argv[optind++]; |
2203 | ||
2204 | /* Open the image */ | |
9ffe3332 | 2205 | bs = bdrv_new_open("image", filename, NULL, bdrv_oflags, true, quiet); |
c2abccec MK |
2206 | if (!bs) { |
2207 | return 1; | |
2208 | } | |
f7b4a940 AL |
2209 | |
2210 | /* Perform the requested action */ | |
2211 | switch(action) { | |
2212 | case SNAPSHOT_LIST: | |
2213 | dump_snapshots(bs); | |
2214 | break; | |
2215 | ||
2216 | case SNAPSHOT_CREATE: | |
2217 | memset(&sn, 0, sizeof(sn)); | |
2218 | pstrcpy(sn.name, sizeof(sn.name), snapshot_name); | |
2219 | ||
2220 | qemu_gettimeofday(&tv); | |
2221 | sn.date_sec = tv.tv_sec; | |
2222 | sn.date_nsec = tv.tv_usec * 1000; | |
2223 | ||
2224 | ret = bdrv_snapshot_create(bs, &sn); | |
b8fb60da | 2225 | if (ret) { |
15654a6d | 2226 | error_report("Could not create snapshot '%s': %d (%s)", |
f7b4a940 | 2227 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 2228 | } |
f7b4a940 AL |
2229 | break; |
2230 | ||
2231 | case SNAPSHOT_APPLY: | |
2232 | ret = bdrv_snapshot_goto(bs, snapshot_name); | |
b8fb60da | 2233 | if (ret) { |
15654a6d | 2234 | error_report("Could not apply snapshot '%s': %d (%s)", |
f7b4a940 | 2235 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 2236 | } |
f7b4a940 AL |
2237 | break; |
2238 | ||
2239 | case SNAPSHOT_DELETE: | |
a89d89d3 | 2240 | bdrv_snapshot_delete_by_id_or_name(bs, snapshot_name, &err); |
84d18f06 | 2241 | if (err) { |
a89d89d3 WX |
2242 | error_report("Could not delete snapshot '%s': (%s)", |
2243 | snapshot_name, error_get_pretty(err)); | |
2244 | error_free(err); | |
2245 | ret = 1; | |
b8fb60da | 2246 | } |
f7b4a940 AL |
2247 | break; |
2248 | } | |
2249 | ||
2250 | /* Cleanup */ | |
4f6fd349 | 2251 | bdrv_unref(bs); |
c2abccec MK |
2252 | if (ret) { |
2253 | return 1; | |
2254 | } | |
153859be | 2255 | return 0; |
f7b4a940 AL |
2256 | } |
2257 | ||
3e85c6fd KW |
2258 | static int img_rebase(int argc, char **argv) |
2259 | { | |
c2abccec | 2260 | BlockDriverState *bs, *bs_old_backing = NULL, *bs_new_backing = NULL; |
f163d073 | 2261 | BlockDriver *old_backing_drv, *new_backing_drv; |
3e85c6fd | 2262 | char *filename; |
661a0f71 | 2263 | const char *fmt, *cache, *out_basefmt, *out_baseimg; |
3e85c6fd KW |
2264 | int c, flags, ret; |
2265 | int unsafe = 0; | |
6b837bc4 | 2266 | int progress = 0; |
f382d43a | 2267 | bool quiet = false; |
34b5d2c6 | 2268 | Error *local_err = NULL; |
3e85c6fd KW |
2269 | |
2270 | /* Parse commandline parameters */ | |
e53dbee0 | 2271 | fmt = NULL; |
661a0f71 | 2272 | cache = BDRV_DEFAULT_CACHE; |
3e85c6fd KW |
2273 | out_baseimg = NULL; |
2274 | out_basefmt = NULL; | |
3e85c6fd | 2275 | for(;;) { |
f382d43a | 2276 | c = getopt(argc, argv, "uhf:F:b:pt:q"); |
b8fb60da | 2277 | if (c == -1) { |
3e85c6fd | 2278 | break; |
b8fb60da | 2279 | } |
3e85c6fd | 2280 | switch(c) { |
ef87394c | 2281 | case '?': |
3e85c6fd KW |
2282 | case 'h': |
2283 | help(); | |
2284 | return 0; | |
e53dbee0 KW |
2285 | case 'f': |
2286 | fmt = optarg; | |
2287 | break; | |
3e85c6fd KW |
2288 | case 'F': |
2289 | out_basefmt = optarg; | |
2290 | break; | |
2291 | case 'b': | |
2292 | out_baseimg = optarg; | |
2293 | break; | |
2294 | case 'u': | |
2295 | unsafe = 1; | |
2296 | break; | |
6b837bc4 JS |
2297 | case 'p': |
2298 | progress = 1; | |
2299 | break; | |
661a0f71 FS |
2300 | case 't': |
2301 | cache = optarg; | |
2302 | break; | |
f382d43a MR |
2303 | case 'q': |
2304 | quiet = true; | |
2305 | break; | |
3e85c6fd KW |
2306 | } |
2307 | } | |
2308 | ||
f382d43a MR |
2309 | if (quiet) { |
2310 | progress = 0; | |
2311 | } | |
2312 | ||
ac1307ab FZ |
2313 | if (optind != argc - 1) { |
2314 | error_exit("Expecting one image file name"); | |
2315 | } | |
2316 | if (!unsafe && !out_baseimg) { | |
2317 | error_exit("Must specify backing file (-b) or use unsafe mode (-u)"); | |
b8fb60da | 2318 | } |
3e85c6fd KW |
2319 | filename = argv[optind++]; |
2320 | ||
6b837bc4 JS |
2321 | qemu_progress_init(progress, 2.0); |
2322 | qemu_progress_print(0, 100); | |
2323 | ||
661a0f71 | 2324 | flags = BDRV_O_RDWR | (unsafe ? BDRV_O_NO_BACKING : 0); |
c3993cdc | 2325 | ret = bdrv_parse_cache_flags(cache, &flags); |
661a0f71 FS |
2326 | if (ret < 0) { |
2327 | error_report("Invalid cache option: %s", cache); | |
2328 | return -1; | |
2329 | } | |
2330 | ||
3e85c6fd KW |
2331 | /* |
2332 | * Open the images. | |
2333 | * | |
2334 | * Ignore the old backing file for unsafe rebase in case we want to correct | |
2335 | * the reference to a renamed or moved backing file. | |
2336 | */ | |
9ffe3332 | 2337 | bs = bdrv_new_open("image", filename, fmt, flags, true, quiet); |
c2abccec MK |
2338 | if (!bs) { |
2339 | return 1; | |
2340 | } | |
3e85c6fd KW |
2341 | |
2342 | /* Find the right drivers for the backing files */ | |
2343 | old_backing_drv = NULL; | |
2344 | new_backing_drv = NULL; | |
2345 | ||
2346 | if (!unsafe && bs->backing_format[0] != '\0') { | |
2347 | old_backing_drv = bdrv_find_format(bs->backing_format); | |
2348 | if (old_backing_drv == NULL) { | |
15654a6d | 2349 | error_report("Invalid format name: '%s'", bs->backing_format); |
c2abccec MK |
2350 | ret = -1; |
2351 | goto out; | |
3e85c6fd KW |
2352 | } |
2353 | } | |
2354 | ||
2355 | if (out_basefmt != NULL) { | |
2356 | new_backing_drv = bdrv_find_format(out_basefmt); | |
2357 | if (new_backing_drv == NULL) { | |
15654a6d | 2358 | error_report("Invalid format name: '%s'", out_basefmt); |
c2abccec MK |
2359 | ret = -1; |
2360 | goto out; | |
3e85c6fd KW |
2361 | } |
2362 | } | |
2363 | ||
2364 | /* For safe rebasing we need to compare old and new backing file */ | |
2365 | if (unsafe) { | |
2366 | /* Make the compiler happy */ | |
2367 | bs_old_backing = NULL; | |
2368 | bs_new_backing = NULL; | |
2369 | } else { | |
2370 | char backing_name[1024]; | |
2371 | ||
98522f63 | 2372 | bs_old_backing = bdrv_new("old_backing", &error_abort); |
3e85c6fd | 2373 | bdrv_get_backing_filename(bs, backing_name, sizeof(backing_name)); |
ddf5636d | 2374 | ret = bdrv_open(&bs_old_backing, backing_name, NULL, NULL, BDRV_O_FLAGS, |
34b5d2c6 | 2375 | old_backing_drv, &local_err); |
c2abccec | 2376 | if (ret) { |
34b5d2c6 HR |
2377 | error_report("Could not open old backing file '%s': %s", |
2378 | backing_name, error_get_pretty(local_err)); | |
2379 | error_free(local_err); | |
c2abccec | 2380 | goto out; |
3e85c6fd | 2381 | } |
a616673d | 2382 | if (out_baseimg[0]) { |
98522f63 | 2383 | bs_new_backing = bdrv_new("new_backing", &error_abort); |
ddf5636d HR |
2384 | ret = bdrv_open(&bs_new_backing, out_baseimg, NULL, NULL, |
2385 | BDRV_O_FLAGS, new_backing_drv, &local_err); | |
a616673d | 2386 | if (ret) { |
34b5d2c6 HR |
2387 | error_report("Could not open new backing file '%s': %s", |
2388 | out_baseimg, error_get_pretty(local_err)); | |
2389 | error_free(local_err); | |
a616673d AB |
2390 | goto out; |
2391 | } | |
3e85c6fd KW |
2392 | } |
2393 | } | |
2394 | ||
2395 | /* | |
2396 | * Check each unallocated cluster in the COW file. If it is unallocated, | |
2397 | * accesses go to the backing file. We must therefore compare this cluster | |
2398 | * in the old and new backing file, and if they differ we need to copy it | |
2399 | * from the old backing file into the COW file. | |
2400 | * | |
2401 | * If qemu-img crashes during this step, no harm is done. The content of | |
2402 | * the image is the same as the original one at any time. | |
2403 | */ | |
2404 | if (!unsafe) { | |
2405 | uint64_t num_sectors; | |
87a1b3e3 | 2406 | uint64_t old_backing_num_sectors; |
a616673d | 2407 | uint64_t new_backing_num_sectors = 0; |
3e85c6fd | 2408 | uint64_t sector; |
cc60e327 | 2409 | int n; |
d6771bfa T |
2410 | uint8_t * buf_old; |
2411 | uint8_t * buf_new; | |
1f710495 | 2412 | float local_progress = 0; |
d6771bfa | 2413 | |
bb1c0597 KW |
2414 | buf_old = qemu_blockalign(bs, IO_BUF_SIZE); |
2415 | buf_new = qemu_blockalign(bs, IO_BUF_SIZE); | |
3e85c6fd KW |
2416 | |
2417 | bdrv_get_geometry(bs, &num_sectors); | |
87a1b3e3 | 2418 | bdrv_get_geometry(bs_old_backing, &old_backing_num_sectors); |
a616673d AB |
2419 | if (bs_new_backing) { |
2420 | bdrv_get_geometry(bs_new_backing, &new_backing_num_sectors); | |
2421 | } | |
3e85c6fd | 2422 | |
1f710495 KW |
2423 | if (num_sectors != 0) { |
2424 | local_progress = (float)100 / | |
2425 | (num_sectors / MIN(num_sectors, IO_BUF_SIZE / 512)); | |
2426 | } | |
2427 | ||
3e85c6fd KW |
2428 | for (sector = 0; sector < num_sectors; sector += n) { |
2429 | ||
2430 | /* How many sectors can we handle with the next read? */ | |
2431 | if (sector + (IO_BUF_SIZE / 512) <= num_sectors) { | |
2432 | n = (IO_BUF_SIZE / 512); | |
2433 | } else { | |
2434 | n = num_sectors - sector; | |
2435 | } | |
2436 | ||
2437 | /* If the cluster is allocated, we don't need to take action */ | |
cc60e327 | 2438 | ret = bdrv_is_allocated(bs, sector, n, &n); |
d663640c PB |
2439 | if (ret < 0) { |
2440 | error_report("error while reading image metadata: %s", | |
2441 | strerror(-ret)); | |
2442 | goto out; | |
2443 | } | |
cc60e327 | 2444 | if (ret) { |
3e85c6fd KW |
2445 | continue; |
2446 | } | |
2447 | ||
87a1b3e3 KW |
2448 | /* |
2449 | * Read old and new backing file and take into consideration that | |
2450 | * backing files may be smaller than the COW image. | |
2451 | */ | |
2452 | if (sector >= old_backing_num_sectors) { | |
2453 | memset(buf_old, 0, n * BDRV_SECTOR_SIZE); | |
2454 | } else { | |
2455 | if (sector + n > old_backing_num_sectors) { | |
2456 | n = old_backing_num_sectors - sector; | |
2457 | } | |
2458 | ||
2459 | ret = bdrv_read(bs_old_backing, sector, buf_old, n); | |
2460 | if (ret < 0) { | |
2461 | error_report("error while reading from old backing file"); | |
2462 | goto out; | |
2463 | } | |
3e85c6fd | 2464 | } |
87a1b3e3 | 2465 | |
a616673d | 2466 | if (sector >= new_backing_num_sectors || !bs_new_backing) { |
87a1b3e3 KW |
2467 | memset(buf_new, 0, n * BDRV_SECTOR_SIZE); |
2468 | } else { | |
2469 | if (sector + n > new_backing_num_sectors) { | |
2470 | n = new_backing_num_sectors - sector; | |
2471 | } | |
2472 | ||
2473 | ret = bdrv_read(bs_new_backing, sector, buf_new, n); | |
2474 | if (ret < 0) { | |
2475 | error_report("error while reading from new backing file"); | |
2476 | goto out; | |
2477 | } | |
3e85c6fd KW |
2478 | } |
2479 | ||
2480 | /* If they differ, we need to write to the COW file */ | |
2481 | uint64_t written = 0; | |
2482 | ||
2483 | while (written < n) { | |
2484 | int pnum; | |
2485 | ||
2486 | if (compare_sectors(buf_old + written * 512, | |
60b1bd4f | 2487 | buf_new + written * 512, n - written, &pnum)) |
3e85c6fd KW |
2488 | { |
2489 | ret = bdrv_write(bs, sector + written, | |
2490 | buf_old + written * 512, pnum); | |
2491 | if (ret < 0) { | |
15654a6d | 2492 | error_report("Error while writing to COW image: %s", |
3e85c6fd | 2493 | strerror(-ret)); |
c2abccec | 2494 | goto out; |
3e85c6fd KW |
2495 | } |
2496 | } | |
2497 | ||
2498 | written += pnum; | |
2499 | } | |
6b837bc4 | 2500 | qemu_progress_print(local_progress, 100); |
3e85c6fd | 2501 | } |
d6771bfa | 2502 | |
bb1c0597 KW |
2503 | qemu_vfree(buf_old); |
2504 | qemu_vfree(buf_new); | |
3e85c6fd KW |
2505 | } |
2506 | ||
2507 | /* | |
2508 | * Change the backing file. All clusters that are different from the old | |
2509 | * backing file are overwritten in the COW file now, so the visible content | |
2510 | * doesn't change when we switch the backing file. | |
2511 | */ | |
a616673d AB |
2512 | if (out_baseimg && *out_baseimg) { |
2513 | ret = bdrv_change_backing_file(bs, out_baseimg, out_basefmt); | |
2514 | } else { | |
2515 | ret = bdrv_change_backing_file(bs, NULL, NULL); | |
2516 | } | |
2517 | ||
3e85c6fd | 2518 | if (ret == -ENOSPC) { |
15654a6d JS |
2519 | error_report("Could not change the backing file to '%s': No " |
2520 | "space left in the file header", out_baseimg); | |
3e85c6fd | 2521 | } else if (ret < 0) { |
15654a6d | 2522 | error_report("Could not change the backing file to '%s': %s", |
3e85c6fd KW |
2523 | out_baseimg, strerror(-ret)); |
2524 | } | |
2525 | ||
6b837bc4 | 2526 | qemu_progress_print(100, 0); |
3e85c6fd KW |
2527 | /* |
2528 | * TODO At this point it is possible to check if any clusters that are | |
2529 | * allocated in the COW file are the same in the backing file. If so, they | |
2530 | * could be dropped from the COW file. Don't do this before switching the | |
2531 | * backing file, in case of a crash this would lead to corruption. | |
2532 | */ | |
c2abccec | 2533 | out: |
6b837bc4 | 2534 | qemu_progress_end(); |
3e85c6fd KW |
2535 | /* Cleanup */ |
2536 | if (!unsafe) { | |
eb863add | 2537 | if (bs_old_backing != NULL) { |
4f6fd349 | 2538 | bdrv_unref(bs_old_backing); |
eb863add KW |
2539 | } |
2540 | if (bs_new_backing != NULL) { | |
4f6fd349 | 2541 | bdrv_unref(bs_new_backing); |
eb863add | 2542 | } |
3e85c6fd KW |
2543 | } |
2544 | ||
4f6fd349 | 2545 | bdrv_unref(bs); |
c2abccec MK |
2546 | if (ret) { |
2547 | return 1; | |
2548 | } | |
3e85c6fd KW |
2549 | return 0; |
2550 | } | |
2551 | ||
ae6b0ed6 SH |
2552 | static int img_resize(int argc, char **argv) |
2553 | { | |
2554 | int c, ret, relative; | |
2555 | const char *filename, *fmt, *size; | |
2556 | int64_t n, total_size; | |
f382d43a | 2557 | bool quiet = false; |
2a81998a | 2558 | BlockDriverState *bs = NULL; |
20caf0f7 DXW |
2559 | QemuOpts *param; |
2560 | static QemuOptsList resize_options = { | |
2561 | .name = "resize_options", | |
2562 | .head = QTAILQ_HEAD_INITIALIZER(resize_options.head), | |
2563 | .desc = { | |
2564 | { | |
2565 | .name = BLOCK_OPT_SIZE, | |
2566 | .type = QEMU_OPT_SIZE, | |
2567 | .help = "Virtual disk size" | |
2568 | }, { | |
2569 | /* end of list */ | |
2570 | } | |
ae6b0ed6 | 2571 | }, |
ae6b0ed6 SH |
2572 | }; |
2573 | ||
e80fec7f KW |
2574 | /* Remove size from argv manually so that negative numbers are not treated |
2575 | * as options by getopt. */ | |
2576 | if (argc < 3) { | |
ac1307ab | 2577 | error_exit("Not enough arguments"); |
e80fec7f KW |
2578 | return 1; |
2579 | } | |
2580 | ||
2581 | size = argv[--argc]; | |
2582 | ||
2583 | /* Parse getopt arguments */ | |
ae6b0ed6 SH |
2584 | fmt = NULL; |
2585 | for(;;) { | |
f382d43a | 2586 | c = getopt(argc, argv, "f:hq"); |
ae6b0ed6 SH |
2587 | if (c == -1) { |
2588 | break; | |
2589 | } | |
2590 | switch(c) { | |
ef87394c | 2591 | case '?': |
ae6b0ed6 SH |
2592 | case 'h': |
2593 | help(); | |
2594 | break; | |
2595 | case 'f': | |
2596 | fmt = optarg; | |
2597 | break; | |
f382d43a MR |
2598 | case 'q': |
2599 | quiet = true; | |
2600 | break; | |
ae6b0ed6 SH |
2601 | } |
2602 | } | |
fc11eb26 | 2603 | if (optind != argc - 1) { |
ac1307ab | 2604 | error_exit("Expecting one image file name"); |
ae6b0ed6 SH |
2605 | } |
2606 | filename = argv[optind++]; | |
ae6b0ed6 SH |
2607 | |
2608 | /* Choose grow, shrink, or absolute resize mode */ | |
2609 | switch (size[0]) { | |
2610 | case '+': | |
2611 | relative = 1; | |
2612 | size++; | |
2613 | break; | |
2614 | case '-': | |
2615 | relative = -1; | |
2616 | size++; | |
2617 | break; | |
2618 | default: | |
2619 | relative = 0; | |
2620 | break; | |
2621 | } | |
2622 | ||
2623 | /* Parse size */ | |
87ea75d5 | 2624 | param = qemu_opts_create(&resize_options, NULL, 0, &error_abort); |
20caf0f7 | 2625 | if (qemu_opt_set(param, BLOCK_OPT_SIZE, size)) { |
ae6b0ed6 | 2626 | /* Error message already printed when size parsing fails */ |
2a81998a | 2627 | ret = -1; |
20caf0f7 | 2628 | qemu_opts_del(param); |
2a81998a | 2629 | goto out; |
ae6b0ed6 | 2630 | } |
20caf0f7 DXW |
2631 | n = qemu_opt_get_size(param, BLOCK_OPT_SIZE, 0); |
2632 | qemu_opts_del(param); | |
ae6b0ed6 | 2633 | |
9ffe3332 KW |
2634 | bs = bdrv_new_open("image", filename, fmt, BDRV_O_FLAGS | BDRV_O_RDWR, |
2635 | true, quiet); | |
c2abccec | 2636 | if (!bs) { |
2a81998a JS |
2637 | ret = -1; |
2638 | goto out; | |
c2abccec | 2639 | } |
ae6b0ed6 SH |
2640 | |
2641 | if (relative) { | |
2642 | total_size = bdrv_getlength(bs) + n * relative; | |
2643 | } else { | |
2644 | total_size = n; | |
2645 | } | |
2646 | if (total_size <= 0) { | |
15654a6d | 2647 | error_report("New image size must be positive"); |
c2abccec MK |
2648 | ret = -1; |
2649 | goto out; | |
ae6b0ed6 SH |
2650 | } |
2651 | ||
2652 | ret = bdrv_truncate(bs, total_size); | |
2653 | switch (ret) { | |
2654 | case 0: | |
f382d43a | 2655 | qprintf(quiet, "Image resized.\n"); |
ae6b0ed6 SH |
2656 | break; |
2657 | case -ENOTSUP: | |
259b2173 | 2658 | error_report("This image does not support resize"); |
ae6b0ed6 SH |
2659 | break; |
2660 | case -EACCES: | |
15654a6d | 2661 | error_report("Image is read-only"); |
ae6b0ed6 SH |
2662 | break; |
2663 | default: | |
15654a6d | 2664 | error_report("Error resizing image (%d)", -ret); |
ae6b0ed6 SH |
2665 | break; |
2666 | } | |
c2abccec | 2667 | out: |
2a81998a | 2668 | if (bs) { |
4f6fd349 | 2669 | bdrv_unref(bs); |
2a81998a | 2670 | } |
c2abccec MK |
2671 | if (ret) { |
2672 | return 1; | |
2673 | } | |
ae6b0ed6 SH |
2674 | return 0; |
2675 | } | |
2676 | ||
6f176b48 HR |
2677 | static int img_amend(int argc, char **argv) |
2678 | { | |
2679 | int c, ret = 0; | |
2680 | char *options = NULL; | |
2681 | QEMUOptionParameter *create_options = NULL, *options_param = NULL; | |
2682 | const char *fmt = NULL, *filename; | |
2683 | bool quiet = false; | |
2684 | BlockDriverState *bs = NULL; | |
2685 | ||
2686 | for (;;) { | |
2687 | c = getopt(argc, argv, "hqf:o:"); | |
2688 | if (c == -1) { | |
2689 | break; | |
2690 | } | |
2691 | ||
2692 | switch (c) { | |
2693 | case 'h': | |
2694 | case '?': | |
2695 | help(); | |
2696 | break; | |
2697 | case 'o': | |
626f84f3 KW |
2698 | if (!is_valid_option_list(optarg)) { |
2699 | error_report("Invalid option list: %s", optarg); | |
2700 | ret = -1; | |
2701 | goto out; | |
2702 | } | |
2703 | if (!options) { | |
2704 | options = g_strdup(optarg); | |
2705 | } else { | |
2706 | char *old_options = options; | |
2707 | options = g_strdup_printf("%s,%s", options, optarg); | |
2708 | g_free(old_options); | |
2709 | } | |
6f176b48 HR |
2710 | break; |
2711 | case 'f': | |
2712 | fmt = optarg; | |
2713 | break; | |
2714 | case 'q': | |
2715 | quiet = true; | |
2716 | break; | |
2717 | } | |
2718 | } | |
2719 | ||
a283cb6e | 2720 | if (!options) { |
ac1307ab | 2721 | error_exit("Must specify options (-o)"); |
6f176b48 HR |
2722 | } |
2723 | ||
a283cb6e KW |
2724 | filename = (optind == argc - 1) ? argv[argc - 1] : NULL; |
2725 | if (fmt && has_help_option(options)) { | |
2726 | /* If a format is explicitly specified (and possibly no filename is | |
2727 | * given), print option help here */ | |
2728 | ret = print_block_option_help(filename, fmt); | |
2729 | goto out; | |
6f176b48 HR |
2730 | } |
2731 | ||
a283cb6e | 2732 | if (optind != argc - 1) { |
ac1307ab | 2733 | error_exit("Expecting one image file name"); |
a283cb6e | 2734 | } |
6f176b48 | 2735 | |
9ffe3332 KW |
2736 | bs = bdrv_new_open("image", filename, fmt, |
2737 | BDRV_O_FLAGS | BDRV_O_RDWR, true, quiet); | |
6f176b48 HR |
2738 | if (!bs) { |
2739 | error_report("Could not open image '%s'", filename); | |
2740 | ret = -1; | |
2741 | goto out; | |
2742 | } | |
2743 | ||
2744 | fmt = bs->drv->format_name; | |
2745 | ||
626f84f3 | 2746 | if (has_help_option(options)) { |
a283cb6e | 2747 | /* If the format was auto-detected, print option help here */ |
6f176b48 HR |
2748 | ret = print_block_option_help(filename, fmt); |
2749 | goto out; | |
2750 | } | |
2751 | ||
2752 | create_options = append_option_parameters(create_options, | |
2753 | bs->drv->create_options); | |
2754 | options_param = parse_option_parameters(options, create_options, | |
2755 | options_param); | |
2756 | if (options_param == NULL) { | |
2757 | error_report("Invalid options for file format '%s'", fmt); | |
2758 | ret = -1; | |
2759 | goto out; | |
2760 | } | |
2761 | ||
2762 | ret = bdrv_amend_options(bs, options_param); | |
2763 | if (ret < 0) { | |
2764 | error_report("Error while amending options: %s", strerror(-ret)); | |
2765 | goto out; | |
2766 | } | |
2767 | ||
2768 | out: | |
2769 | if (bs) { | |
2770 | bdrv_unref(bs); | |
2771 | } | |
2772 | free_option_parameters(create_options); | |
2773 | free_option_parameters(options_param); | |
626f84f3 KW |
2774 | g_free(options); |
2775 | ||
6f176b48 HR |
2776 | if (ret) { |
2777 | return 1; | |
2778 | } | |
2779 | return 0; | |
2780 | } | |
2781 | ||
c227f099 | 2782 | static const img_cmd_t img_cmds[] = { |
153859be SB |
2783 | #define DEF(option, callback, arg_string) \ |
2784 | { option, callback }, | |
2785 | #include "qemu-img-cmds.h" | |
2786 | #undef DEF | |
2787 | #undef GEN_DOCS | |
2788 | { NULL, NULL, }, | |
2789 | }; | |
2790 | ||
ea2384d3 FB |
2791 | int main(int argc, char **argv) |
2792 | { | |
c227f099 | 2793 | const img_cmd_t *cmd; |
153859be | 2794 | const char *cmdname; |
7db1689c | 2795 | int c; |
7db1689c JC |
2796 | static const struct option long_options[] = { |
2797 | {"help", no_argument, 0, 'h'}, | |
5f6979cb | 2798 | {"version", no_argument, 0, 'v'}, |
7db1689c JC |
2799 | {0, 0, 0, 0} |
2800 | }; | |
ea2384d3 | 2801 | |
526eda14 MK |
2802 | #ifdef CONFIG_POSIX |
2803 | signal(SIGPIPE, SIG_IGN); | |
2804 | #endif | |
2805 | ||
53f76e58 | 2806 | error_set_progname(argv[0]); |
10f5bff6 | 2807 | qemu_init_exec_dir(argv[0]); |
53f76e58 | 2808 | |
2592c59a | 2809 | qemu_init_main_loop(); |
ea2384d3 | 2810 | bdrv_init(); |
ac1307ab FZ |
2811 | if (argc < 2) { |
2812 | error_exit("Not enough arguments"); | |
2813 | } | |
153859be | 2814 | cmdname = argv[1]; |
153859be SB |
2815 | |
2816 | /* find the command */ | |
5f6979cb | 2817 | for (cmd = img_cmds; cmd->name != NULL; cmd++) { |
153859be | 2818 | if (!strcmp(cmdname, cmd->name)) { |
7db1689c | 2819 | return cmd->handler(argc - 1, argv + 1); |
153859be | 2820 | } |
ea2384d3 | 2821 | } |
153859be | 2822 | |
5f6979cb | 2823 | c = getopt_long(argc, argv, "h", long_options, NULL); |
7db1689c JC |
2824 | |
2825 | if (c == 'h') { | |
2826 | help(); | |
2827 | } | |
5f6979cb JC |
2828 | if (c == 'v') { |
2829 | printf(QEMU_IMG_VERSION); | |
2830 | return 0; | |
2831 | } | |
7db1689c | 2832 | |
153859be | 2833 | /* not found */ |
ac1307ab | 2834 | error_exit("Command not found: %s", cmdname); |
ea2384d3 | 2835 | } |