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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" |
26f54e9a | 32 | #include "sysemu/block-backend.h" |
737e150e | 33 | #include "block/block_int.h" |
f364ec65 | 34 | #include "block/qapi.h" |
c054b3fd | 35 | #include <getopt.h> |
e8445331 | 36 | |
5f6979cb JC |
37 | #define QEMU_IMG_VERSION "qemu-img version " QEMU_VERSION \ |
38 | ", Copyright (c) 2004-2008 Fabrice Bellard\n" | |
39 | ||
c227f099 | 40 | typedef struct img_cmd_t { |
153859be SB |
41 | const char *name; |
42 | int (*handler)(int argc, char **argv); | |
c227f099 | 43 | } img_cmd_t; |
153859be | 44 | |
8599ea4c FS |
45 | enum { |
46 | OPTION_OUTPUT = 256, | |
47 | OPTION_BACKING_CHAIN = 257, | |
48 | }; | |
49 | ||
50 | typedef enum OutputFormat { | |
51 | OFORMAT_JSON, | |
52 | OFORMAT_HUMAN, | |
53 | } OutputFormat; | |
54 | ||
137519ce | 55 | /* Default to cache=writeback as data integrity is not important for qemu-tcg. */ |
adfe078e | 56 | #define BDRV_O_FLAGS BDRV_O_CACHE_WB |
661a0f71 | 57 | #define BDRV_DEFAULT_CACHE "writeback" |
137519ce | 58 | |
00c6d403 | 59 | static void format_print(void *opaque, const char *name) |
ea2384d3 | 60 | { |
00c6d403 | 61 | printf(" %s", name); |
ea2384d3 FB |
62 | } |
63 | ||
ac1307ab FZ |
64 | static void QEMU_NORETURN GCC_FMT_ATTR(1, 2) error_exit(const char *fmt, ...) |
65 | { | |
66 | va_list ap; | |
67 | ||
68 | error_printf("qemu-img: "); | |
69 | ||
70 | va_start(ap, fmt); | |
71 | error_vprintf(fmt, ap); | |
72 | va_end(ap); | |
73 | ||
74 | error_printf("\nTry 'qemu-img --help' for more information\n"); | |
75 | exit(EXIT_FAILURE); | |
76 | } | |
77 | ||
d2c639d6 | 78 | /* Please keep in synch with qemu-img.texi */ |
ac1307ab | 79 | static void QEMU_NORETURN help(void) |
ea2384d3 | 80 | { |
e00291c0 | 81 | const char *help_msg = |
5f6979cb | 82 | QEMU_IMG_VERSION |
3f020d70 | 83 | "usage: qemu-img command [command options]\n" |
84 | "QEMU disk image utility\n" | |
85 | "\n" | |
86 | "Command syntax:\n" | |
153859be SB |
87 | #define DEF(option, callback, arg_string) \ |
88 | " " arg_string "\n" | |
89 | #include "qemu-img-cmds.h" | |
90 | #undef DEF | |
91 | #undef GEN_DOCS | |
3f020d70 | 92 | "\n" |
93 | "Command parameters:\n" | |
94 | " 'filename' is a disk image filename\n" | |
95 | " 'fmt' is the disk image format. It is guessed automatically in most cases\n" | |
661a0f71 | 96 | " 'cache' is the cache mode used to write the output disk image, the valid\n" |
80ccf93b LY |
97 | " options are: 'none', 'writeback' (default, except for convert), 'writethrough',\n" |
98 | " 'directsync' and 'unsafe' (default for convert)\n" | |
bb87fdf8 SH |
99 | " 'src_cache' is the cache mode used to read input disk images, the valid\n" |
100 | " options are the same as for the 'cache' option\n" | |
3f020d70 | 101 | " 'size' is the disk image size in bytes. Optional suffixes\n" |
5e00984a KW |
102 | " 'k' or 'K' (kilobyte, 1024), 'M' (megabyte, 1024k), 'G' (gigabyte, 1024M),\n" |
103 | " 'T' (terabyte, 1024G), 'P' (petabyte, 1024T) and 'E' (exabyte, 1024P) are\n" | |
104 | " supported. 'b' is ignored.\n" | |
3f020d70 | 105 | " 'output_filename' is the destination disk image filename\n" |
106 | " 'output_fmt' is the destination format\n" | |
107 | " 'options' is a comma separated list of format specific options in a\n" | |
108 | " name=value format. Use -o ? for an overview of the options supported by the\n" | |
109 | " used format\n" | |
ef80654d WX |
110 | " 'snapshot_param' is param used for internal snapshot, format\n" |
111 | " is 'snapshot.id=[ID],snapshot.name=[NAME]', or\n" | |
112 | " '[ID_OR_NAME]'\n" | |
113 | " 'snapshot_id_or_name' is deprecated, use 'snapshot_param'\n" | |
114 | " instead\n" | |
3f020d70 | 115 | " '-c' indicates that target image must be compressed (qcow format only)\n" |
116 | " '-u' enables unsafe rebasing. It is assumed that old and new backing file\n" | |
117 | " match exactly. The image doesn't need a working backing file before\n" | |
118 | " rebasing in this case (useful for renaming the backing file)\n" | |
119 | " '-h' with or without a command shows this help and lists the supported formats\n" | |
6b837bc4 | 120 | " '-p' show progress of command (only certain commands)\n" |
f382d43a | 121 | " '-q' use Quiet mode - do not print any output (except errors)\n" |
11b6699a PL |
122 | " '-S' indicates the consecutive number of bytes (defaults to 4k) that must\n" |
123 | " contain only zeros for qemu-img to create a sparse image during\n" | |
124 | " conversion. If the number of bytes is 0, the source will not be scanned for\n" | |
125 | " unallocated or zero sectors, and the destination image will always be\n" | |
126 | " fully allocated\n" | |
c054b3fd | 127 | " '--output' takes the format in which the output must be done (human or json)\n" |
b2e10493 AD |
128 | " '-n' skips the target volume creation (useful if the volume is created\n" |
129 | " prior to running qemu-img)\n" | |
3f020d70 | 130 | "\n" |
4534ff54 KW |
131 | "Parameters to check subcommand:\n" |
132 | " '-r' tries to repair any inconsistencies that are found during the check.\n" | |
133 | " '-r leaks' repairs only cluster leaks, whereas '-r all' fixes all\n" | |
134 | " kinds of errors, with a higher risk of choosing the wrong fix or\n" | |
0546b8c2 | 135 | " hiding corruption that has already occurred.\n" |
4534ff54 | 136 | "\n" |
3f020d70 | 137 | "Parameters to snapshot subcommand:\n" |
138 | " 'snapshot' is the name of the snapshot to create, apply or delete\n" | |
139 | " '-a' applies a snapshot (revert disk to saved state)\n" | |
140 | " '-c' creates a snapshot\n" | |
141 | " '-d' deletes a snapshot\n" | |
d14ed18c MR |
142 | " '-l' lists all snapshots in the given image\n" |
143 | "\n" | |
144 | "Parameters to compare subcommand:\n" | |
145 | " '-f' first image format\n" | |
146 | " '-F' second image format\n" | |
147 | " '-s' run in Strict mode - fail on different image size or sector allocation\n"; | |
e00291c0 PB |
148 | |
149 | printf("%s\nSupported formats:", help_msg); | |
00c6d403 | 150 | bdrv_iterate_format(format_print, NULL); |
ea2384d3 | 151 | printf("\n"); |
ac1307ab | 152 | exit(EXIT_SUCCESS); |
ea2384d3 FB |
153 | } |
154 | ||
7c30f657 | 155 | static int GCC_FMT_ATTR(2, 3) qprintf(bool quiet, const char *fmt, ...) |
f382d43a MR |
156 | { |
157 | int ret = 0; | |
158 | if (!quiet) { | |
159 | va_list args; | |
160 | va_start(args, fmt); | |
161 | ret = vprintf(fmt, args); | |
162 | va_end(args); | |
163 | } | |
164 | return ret; | |
165 | } | |
166 | ||
ea2384d3 FB |
167 | #if defined(WIN32) |
168 | /* XXX: put correct support for win32 */ | |
169 | static int read_password(char *buf, int buf_size) | |
170 | { | |
171 | int c, i; | |
fdcf6e65 | 172 | |
ea2384d3 FB |
173 | printf("Password: "); |
174 | fflush(stdout); | |
175 | i = 0; | |
176 | for(;;) { | |
177 | c = getchar(); | |
fdcf6e65 CG |
178 | if (c < 0) { |
179 | buf[i] = '\0'; | |
180 | return -1; | |
181 | } else if (c == '\n') { | |
ea2384d3 | 182 | break; |
fdcf6e65 | 183 | } else if (i < (buf_size - 1)) { |
ea2384d3 | 184 | buf[i++] = c; |
fdcf6e65 | 185 | } |
ea2384d3 FB |
186 | } |
187 | buf[i] = '\0'; | |
188 | return 0; | |
189 | } | |
190 | ||
191 | #else | |
192 | ||
193 | #include <termios.h> | |
194 | ||
195 | static struct termios oldtty; | |
196 | ||
197 | static void term_exit(void) | |
198 | { | |
199 | tcsetattr (0, TCSANOW, &oldtty); | |
200 | } | |
201 | ||
202 | static void term_init(void) | |
203 | { | |
204 | struct termios tty; | |
205 | ||
206 | tcgetattr (0, &tty); | |
207 | oldtty = tty; | |
208 | ||
209 | tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP | |
210 | |INLCR|IGNCR|ICRNL|IXON); | |
211 | tty.c_oflag |= OPOST; | |
212 | tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN); | |
213 | tty.c_cflag &= ~(CSIZE|PARENB); | |
214 | tty.c_cflag |= CS8; | |
215 | tty.c_cc[VMIN] = 1; | |
216 | tty.c_cc[VTIME] = 0; | |
3b46e624 | 217 | |
ea2384d3 FB |
218 | tcsetattr (0, TCSANOW, &tty); |
219 | ||
220 | atexit(term_exit); | |
221 | } | |
222 | ||
3f379ab1 | 223 | static int read_password(char *buf, int buf_size) |
ea2384d3 FB |
224 | { |
225 | uint8_t ch; | |
226 | int i, ret; | |
227 | ||
228 | printf("password: "); | |
229 | fflush(stdout); | |
230 | term_init(); | |
231 | i = 0; | |
232 | for(;;) { | |
233 | ret = read(0, &ch, 1); | |
234 | if (ret == -1) { | |
235 | if (errno == EAGAIN || errno == EINTR) { | |
236 | continue; | |
237 | } else { | |
ea2384d3 FB |
238 | break; |
239 | } | |
240 | } else if (ret == 0) { | |
241 | ret = -1; | |
242 | break; | |
243 | } else { | |
244 | if (ch == '\r') { | |
245 | ret = 0; | |
246 | break; | |
247 | } | |
248 | if (i < (buf_size - 1)) | |
249 | buf[i++] = ch; | |
250 | } | |
251 | } | |
252 | term_exit(); | |
253 | buf[i] = '\0'; | |
254 | printf("\n"); | |
255 | return ret; | |
256 | } | |
257 | #endif | |
258 | ||
4ac8aacd JS |
259 | static int print_block_option_help(const char *filename, const char *fmt) |
260 | { | |
261 | BlockDriver *drv, *proto_drv; | |
83d0521a | 262 | QemuOptsList *create_opts = NULL; |
4ac8aacd JS |
263 | |
264 | /* Find driver and parse its options */ | |
265 | drv = bdrv_find_format(fmt); | |
266 | if (!drv) { | |
15654a6d | 267 | error_report("Unknown file format '%s'", fmt); |
4ac8aacd JS |
268 | return 1; |
269 | } | |
270 | ||
c282e1fd | 271 | create_opts = qemu_opts_append(create_opts, drv->create_opts); |
a283cb6e KW |
272 | if (filename) { |
273 | proto_drv = bdrv_find_protocol(filename, true); | |
274 | if (!proto_drv) { | |
275 | error_report("Unknown protocol '%s'", filename); | |
83d0521a | 276 | qemu_opts_free(create_opts); |
a283cb6e KW |
277 | return 1; |
278 | } | |
c282e1fd | 279 | create_opts = qemu_opts_append(create_opts, proto_drv->create_opts); |
a283cb6e KW |
280 | } |
281 | ||
83d0521a CL |
282 | qemu_opts_print_help(create_opts); |
283 | qemu_opts_free(create_opts); | |
4ac8aacd JS |
284 | return 0; |
285 | } | |
286 | ||
7e7d56d9 MA |
287 | static BlockBackend *img_open(const char *id, const char *filename, |
288 | const char *fmt, int flags, | |
289 | bool require_io, bool quiet) | |
75c23805 | 290 | { |
7e7d56d9 | 291 | BlockBackend *blk; |
75c23805 FB |
292 | BlockDriverState *bs; |
293 | BlockDriver *drv; | |
294 | char password[256]; | |
34b5d2c6 | 295 | Error *local_err = NULL; |
b9eaf9ec | 296 | int ret; |
75c23805 | 297 | |
7e7d56d9 MA |
298 | blk = blk_new_with_bs(id, &error_abort); |
299 | bs = blk_bs(blk); | |
ad717139 | 300 | |
75c23805 FB |
301 | if (fmt) { |
302 | drv = bdrv_find_format(fmt); | |
c2abccec | 303 | if (!drv) { |
15654a6d | 304 | error_report("Unknown file format '%s'", fmt); |
c2abccec MK |
305 | goto fail; |
306 | } | |
75c23805 FB |
307 | } else { |
308 | drv = NULL; | |
309 | } | |
b9eaf9ec | 310 | |
ddf5636d | 311 | ret = bdrv_open(&bs, filename, NULL, NULL, flags, drv, &local_err); |
b9eaf9ec | 312 | if (ret < 0) { |
34b5d2c6 HR |
313 | error_report("Could not open '%s': %s", filename, |
314 | error_get_pretty(local_err)); | |
315 | error_free(local_err); | |
c2abccec | 316 | goto fail; |
75c23805 | 317 | } |
b9eaf9ec | 318 | |
f0536bb8 | 319 | if (bdrv_is_encrypted(bs) && require_io) { |
f382d43a | 320 | qprintf(quiet, "Disk image '%s' is encrypted.\n", filename); |
c2abccec | 321 | if (read_password(password, sizeof(password)) < 0) { |
15654a6d | 322 | error_report("No password given"); |
c2abccec MK |
323 | goto fail; |
324 | } | |
325 | if (bdrv_set_key(bs, password) < 0) { | |
15654a6d | 326 | error_report("invalid password"); |
c2abccec MK |
327 | goto fail; |
328 | } | |
75c23805 | 329 | } |
7e7d56d9 | 330 | return blk; |
c2abccec | 331 | fail: |
7e7d56d9 | 332 | blk_unref(blk); |
c2abccec | 333 | return NULL; |
75c23805 FB |
334 | } |
335 | ||
83d0521a | 336 | static int add_old_style_options(const char *fmt, QemuOpts *opts, |
eec77d9e JS |
337 | const char *base_filename, |
338 | const char *base_fmt) | |
efa84d43 | 339 | { |
efa84d43 | 340 | if (base_filename) { |
83d0521a | 341 | if (qemu_opt_set(opts, BLOCK_OPT_BACKING_FILE, base_filename)) { |
15654a6d JS |
342 | error_report("Backing file not supported for file format '%s'", |
343 | fmt); | |
c2abccec | 344 | return -1; |
efa84d43 KW |
345 | } |
346 | } | |
347 | if (base_fmt) { | |
83d0521a | 348 | if (qemu_opt_set(opts, BLOCK_OPT_BACKING_FMT, base_fmt)) { |
15654a6d JS |
349 | error_report("Backing file format not supported for file " |
350 | "format '%s'", fmt); | |
c2abccec | 351 | return -1; |
efa84d43 KW |
352 | } |
353 | } | |
c2abccec | 354 | return 0; |
efa84d43 KW |
355 | } |
356 | ||
ea2384d3 FB |
357 | static int img_create(int argc, char **argv) |
358 | { | |
a9300911 | 359 | int c; |
1da7cfbd | 360 | uint64_t img_size = -1; |
ea2384d3 | 361 | const char *fmt = "raw"; |
9230eaf6 | 362 | const char *base_fmt = NULL; |
ea2384d3 FB |
363 | const char *filename; |
364 | const char *base_filename = NULL; | |
9ea2ea71 | 365 | char *options = NULL; |
9b37525a | 366 | Error *local_err = NULL; |
f382d43a | 367 | bool quiet = false; |
3b46e624 | 368 | |
ea2384d3 | 369 | for(;;) { |
f382d43a | 370 | c = getopt(argc, argv, "F:b:f:he6o:q"); |
b8fb60da | 371 | if (c == -1) { |
ea2384d3 | 372 | break; |
b8fb60da | 373 | } |
ea2384d3 | 374 | switch(c) { |
ef87394c | 375 | case '?': |
ea2384d3 FB |
376 | case 'h': |
377 | help(); | |
378 | break; | |
9230eaf6 AL |
379 | case 'F': |
380 | base_fmt = optarg; | |
381 | break; | |
ea2384d3 FB |
382 | case 'b': |
383 | base_filename = optarg; | |
384 | break; | |
385 | case 'f': | |
386 | fmt = optarg; | |
387 | break; | |
388 | case 'e': | |
9d42e15d | 389 | error_report("option -e is deprecated, please use \'-o " |
eec77d9e | 390 | "encryption\' instead!"); |
77386bf6 | 391 | goto fail; |
d8871c5a | 392 | case '6': |
9d42e15d | 393 | error_report("option -6 is deprecated, please use \'-o " |
eec77d9e | 394 | "compat6\' instead!"); |
77386bf6 | 395 | goto fail; |
9ea2ea71 | 396 | case 'o': |
77386bf6 KW |
397 | if (!is_valid_option_list(optarg)) { |
398 | error_report("Invalid option list: %s", optarg); | |
399 | goto fail; | |
400 | } | |
401 | if (!options) { | |
402 | options = g_strdup(optarg); | |
403 | } else { | |
404 | char *old_options = options; | |
405 | options = g_strdup_printf("%s,%s", options, optarg); | |
406 | g_free(old_options); | |
407 | } | |
9ea2ea71 | 408 | break; |
f382d43a MR |
409 | case 'q': |
410 | quiet = true; | |
411 | break; | |
ea2384d3 FB |
412 | } |
413 | } | |
9230eaf6 | 414 | |
b50cbabc | 415 | /* Get the filename */ |
a283cb6e KW |
416 | filename = (optind < argc) ? argv[optind] : NULL; |
417 | if (options && has_help_option(options)) { | |
418 | g_free(options); | |
419 | return print_block_option_help(filename, fmt); | |
420 | } | |
421 | ||
b8fb60da | 422 | if (optind >= argc) { |
ac1307ab | 423 | error_exit("Expecting image file name"); |
b8fb60da | 424 | } |
a283cb6e | 425 | optind++; |
b50cbabc | 426 | |
1da7cfbd JS |
427 | /* Get image size, if specified */ |
428 | if (optind < argc) { | |
70b4f4bb | 429 | int64_t sval; |
e36b3695 MA |
430 | char *end; |
431 | sval = strtosz_suffix(argv[optind++], &end, STRTOSZ_DEFSUFFIX_B); | |
432 | if (sval < 0 || *end) { | |
79443397 LG |
433 | if (sval == -ERANGE) { |
434 | error_report("Image size must be less than 8 EiB!"); | |
435 | } else { | |
436 | error_report("Invalid image size specified! You may use k, M, " | |
5e00984a KW |
437 | "G, T, P or E suffixes for "); |
438 | error_report("kilobytes, megabytes, gigabytes, terabytes, " | |
439 | "petabytes and exabytes."); | |
79443397 | 440 | } |
77386bf6 | 441 | goto fail; |
1da7cfbd JS |
442 | } |
443 | img_size = (uint64_t)sval; | |
444 | } | |
fc11eb26 | 445 | if (optind != argc) { |
ac1307ab | 446 | error_exit("Unexpected argument: %s", argv[optind]); |
fc11eb26 | 447 | } |
1da7cfbd | 448 | |
9b37525a | 449 | bdrv_img_create(filename, fmt, base_filename, base_fmt, |
f382d43a | 450 | options, img_size, BDRV_O_FLAGS, &local_err, quiet); |
84d18f06 | 451 | if (local_err) { |
b70d8c23 | 452 | error_report("%s: %s", filename, error_get_pretty(local_err)); |
9b37525a | 453 | error_free(local_err); |
77386bf6 | 454 | goto fail; |
c2abccec | 455 | } |
a9300911 | 456 | |
77386bf6 | 457 | g_free(options); |
ea2384d3 | 458 | return 0; |
77386bf6 KW |
459 | |
460 | fail: | |
461 | g_free(options); | |
462 | return 1; | |
ea2384d3 FB |
463 | } |
464 | ||
f382d43a | 465 | static void dump_json_image_check(ImageCheck *check, bool quiet) |
8599ea4c | 466 | { |
4399c438 | 467 | Error *local_err = NULL; |
8599ea4c FS |
468 | QString *str; |
469 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
470 | QObject *obj; | |
471 | visit_type_ImageCheck(qmp_output_get_visitor(ov), | |
4399c438 | 472 | &check, NULL, &local_err); |
8599ea4c FS |
473 | obj = qmp_output_get_qobject(ov); |
474 | str = qobject_to_json_pretty(obj); | |
475 | assert(str != NULL); | |
f382d43a | 476 | qprintf(quiet, "%s\n", qstring_get_str(str)); |
8599ea4c FS |
477 | qobject_decref(obj); |
478 | qmp_output_visitor_cleanup(ov); | |
479 | QDECREF(str); | |
480 | } | |
481 | ||
f382d43a | 482 | static void dump_human_image_check(ImageCheck *check, bool quiet) |
8599ea4c FS |
483 | { |
484 | if (!(check->corruptions || check->leaks || check->check_errors)) { | |
f382d43a | 485 | qprintf(quiet, "No errors were found on the image.\n"); |
8599ea4c FS |
486 | } else { |
487 | if (check->corruptions) { | |
f382d43a MR |
488 | qprintf(quiet, "\n%" PRId64 " errors were found on the image.\n" |
489 | "Data may be corrupted, or further writes to the image " | |
490 | "may corrupt it.\n", | |
491 | check->corruptions); | |
8599ea4c FS |
492 | } |
493 | ||
494 | if (check->leaks) { | |
f382d43a MR |
495 | qprintf(quiet, |
496 | "\n%" PRId64 " leaked clusters were found on the image.\n" | |
497 | "This means waste of disk space, but no harm to data.\n", | |
498 | check->leaks); | |
8599ea4c FS |
499 | } |
500 | ||
501 | if (check->check_errors) { | |
f382d43a MR |
502 | qprintf(quiet, |
503 | "\n%" PRId64 | |
504 | " internal errors have occurred during the check.\n", | |
505 | check->check_errors); | |
8599ea4c FS |
506 | } |
507 | } | |
508 | ||
509 | if (check->total_clusters != 0 && check->allocated_clusters != 0) { | |
f382d43a MR |
510 | qprintf(quiet, "%" PRId64 "/%" PRId64 " = %0.2f%% allocated, " |
511 | "%0.2f%% fragmented, %0.2f%% compressed clusters\n", | |
512 | check->allocated_clusters, check->total_clusters, | |
513 | check->allocated_clusters * 100.0 / check->total_clusters, | |
514 | check->fragmented_clusters * 100.0 / check->allocated_clusters, | |
515 | check->compressed_clusters * 100.0 / | |
516 | check->allocated_clusters); | |
8599ea4c FS |
517 | } |
518 | ||
519 | if (check->image_end_offset) { | |
f382d43a MR |
520 | qprintf(quiet, |
521 | "Image end offset: %" PRId64 "\n", check->image_end_offset); | |
8599ea4c FS |
522 | } |
523 | } | |
524 | ||
525 | static int collect_image_check(BlockDriverState *bs, | |
526 | ImageCheck *check, | |
527 | const char *filename, | |
528 | const char *fmt, | |
529 | int fix) | |
530 | { | |
531 | int ret; | |
532 | BdrvCheckResult result; | |
533 | ||
534 | ret = bdrv_check(bs, &result, fix); | |
535 | if (ret < 0) { | |
536 | return ret; | |
537 | } | |
538 | ||
539 | check->filename = g_strdup(filename); | |
540 | check->format = g_strdup(bdrv_get_format_name(bs)); | |
541 | check->check_errors = result.check_errors; | |
542 | check->corruptions = result.corruptions; | |
543 | check->has_corruptions = result.corruptions != 0; | |
544 | check->leaks = result.leaks; | |
545 | check->has_leaks = result.leaks != 0; | |
546 | check->corruptions_fixed = result.corruptions_fixed; | |
547 | check->has_corruptions_fixed = result.corruptions != 0; | |
548 | check->leaks_fixed = result.leaks_fixed; | |
549 | check->has_leaks_fixed = result.leaks != 0; | |
550 | check->image_end_offset = result.image_end_offset; | |
551 | check->has_image_end_offset = result.image_end_offset != 0; | |
552 | check->total_clusters = result.bfi.total_clusters; | |
553 | check->has_total_clusters = result.bfi.total_clusters != 0; | |
554 | check->allocated_clusters = result.bfi.allocated_clusters; | |
555 | check->has_allocated_clusters = result.bfi.allocated_clusters != 0; | |
556 | check->fragmented_clusters = result.bfi.fragmented_clusters; | |
557 | check->has_fragmented_clusters = result.bfi.fragmented_clusters != 0; | |
e6439d78 SH |
558 | check->compressed_clusters = result.bfi.compressed_clusters; |
559 | check->has_compressed_clusters = result.bfi.compressed_clusters != 0; | |
8599ea4c FS |
560 | |
561 | return 0; | |
562 | } | |
563 | ||
e076f338 KW |
564 | /* |
565 | * Checks an image for consistency. Exit codes: | |
566 | * | |
d6635c4d HR |
567 | * 0 - Check completed, image is good |
568 | * 1 - Check not completed because of internal errors | |
569 | * 2 - Check completed, image is corrupted | |
570 | * 3 - Check completed, image has leaked clusters, but is good otherwise | |
571 | * 63 - Checks are not supported by the image format | |
e076f338 | 572 | */ |
1585969c AL |
573 | static int img_check(int argc, char **argv) |
574 | { | |
575 | int c, ret; | |
8599ea4c | 576 | OutputFormat output_format = OFORMAT_HUMAN; |
40055951 | 577 | const char *filename, *fmt, *output, *cache; |
26f54e9a | 578 | BlockBackend *blk; |
1585969c | 579 | BlockDriverState *bs; |
4534ff54 | 580 | int fix = 0; |
058f8f16 | 581 | int flags = BDRV_O_FLAGS | BDRV_O_CHECK; |
7e7d56d9 | 582 | ImageCheck *check; |
f382d43a | 583 | bool quiet = false; |
1585969c AL |
584 | |
585 | fmt = NULL; | |
8599ea4c | 586 | output = NULL; |
40055951 | 587 | cache = BDRV_DEFAULT_CACHE; |
1585969c | 588 | for(;;) { |
8599ea4c FS |
589 | int option_index = 0; |
590 | static const struct option long_options[] = { | |
591 | {"help", no_argument, 0, 'h'}, | |
592 | {"format", required_argument, 0, 'f'}, | |
4fd6a984 | 593 | {"repair", required_argument, 0, 'r'}, |
8599ea4c FS |
594 | {"output", required_argument, 0, OPTION_OUTPUT}, |
595 | {0, 0, 0, 0} | |
596 | }; | |
40055951 | 597 | c = getopt_long(argc, argv, "hf:r:T:q", |
8599ea4c | 598 | long_options, &option_index); |
b8fb60da | 599 | if (c == -1) { |
1585969c | 600 | break; |
b8fb60da | 601 | } |
1585969c | 602 | switch(c) { |
ef87394c | 603 | case '?': |
1585969c AL |
604 | case 'h': |
605 | help(); | |
606 | break; | |
607 | case 'f': | |
608 | fmt = optarg; | |
609 | break; | |
4534ff54 KW |
610 | case 'r': |
611 | flags |= BDRV_O_RDWR; | |
612 | ||
613 | if (!strcmp(optarg, "leaks")) { | |
614 | fix = BDRV_FIX_LEAKS; | |
615 | } else if (!strcmp(optarg, "all")) { | |
616 | fix = BDRV_FIX_LEAKS | BDRV_FIX_ERRORS; | |
617 | } else { | |
ac1307ab FZ |
618 | error_exit("Unknown option value for -r " |
619 | "(expecting 'leaks' or 'all'): %s", optarg); | |
4534ff54 KW |
620 | } |
621 | break; | |
8599ea4c FS |
622 | case OPTION_OUTPUT: |
623 | output = optarg; | |
624 | break; | |
40055951 HR |
625 | case 'T': |
626 | cache = optarg; | |
627 | break; | |
f382d43a MR |
628 | case 'q': |
629 | quiet = true; | |
630 | break; | |
1585969c AL |
631 | } |
632 | } | |
fc11eb26 | 633 | if (optind != argc - 1) { |
ac1307ab | 634 | error_exit("Expecting one image file name"); |
b8fb60da | 635 | } |
1585969c AL |
636 | filename = argv[optind++]; |
637 | ||
8599ea4c FS |
638 | if (output && !strcmp(output, "json")) { |
639 | output_format = OFORMAT_JSON; | |
640 | } else if (output && !strcmp(output, "human")) { | |
641 | output_format = OFORMAT_HUMAN; | |
642 | } else if (output) { | |
643 | error_report("--output must be used with human or json as argument."); | |
644 | return 1; | |
645 | } | |
646 | ||
40055951 HR |
647 | ret = bdrv_parse_cache_flags(cache, &flags); |
648 | if (ret < 0) { | |
649 | error_report("Invalid source cache option: %s", cache); | |
650 | return 1; | |
651 | } | |
652 | ||
7e7d56d9 MA |
653 | blk = img_open("image", filename, fmt, flags, true, quiet); |
654 | if (!blk) { | |
655 | return 1; | |
c2abccec | 656 | } |
7e7d56d9 | 657 | bs = blk_bs(blk); |
8599ea4c FS |
658 | |
659 | check = g_new0(ImageCheck, 1); | |
660 | ret = collect_image_check(bs, check, filename, fmt, fix); | |
e076f338 KW |
661 | |
662 | if (ret == -ENOTSUP) { | |
55d492d7 | 663 | error_report("This image format does not support checks"); |
fefddf95 | 664 | ret = 63; |
8599ea4c | 665 | goto fail; |
e076f338 KW |
666 | } |
667 | ||
8599ea4c FS |
668 | if (check->corruptions_fixed || check->leaks_fixed) { |
669 | int corruptions_fixed, leaks_fixed; | |
ccf34716 | 670 | |
8599ea4c FS |
671 | leaks_fixed = check->leaks_fixed; |
672 | corruptions_fixed = check->corruptions_fixed; | |
e076f338 | 673 | |
8599ea4c | 674 | if (output_format == OFORMAT_HUMAN) { |
f382d43a MR |
675 | qprintf(quiet, |
676 | "The following inconsistencies were found and repaired:\n\n" | |
677 | " %" PRId64 " leaked clusters\n" | |
678 | " %" PRId64 " corruptions\n\n" | |
679 | "Double checking the fixed image now...\n", | |
680 | check->leaks_fixed, | |
681 | check->corruptions_fixed); | |
e076f338 KW |
682 | } |
683 | ||
8599ea4c | 684 | ret = collect_image_check(bs, check, filename, fmt, 0); |
1585969c | 685 | |
8599ea4c FS |
686 | check->leaks_fixed = leaks_fixed; |
687 | check->corruptions_fixed = corruptions_fixed; | |
f8111c24 DXW |
688 | } |
689 | ||
832390a5 HR |
690 | if (!ret) { |
691 | switch (output_format) { | |
692 | case OFORMAT_HUMAN: | |
693 | dump_human_image_check(check, quiet); | |
694 | break; | |
695 | case OFORMAT_JSON: | |
696 | dump_json_image_check(check, quiet); | |
697 | break; | |
698 | } | |
c6bb9ad1 FS |
699 | } |
700 | ||
8599ea4c | 701 | if (ret || check->check_errors) { |
832390a5 HR |
702 | if (ret) { |
703 | error_report("Check failed: %s", strerror(-ret)); | |
704 | } else { | |
705 | error_report("Check failed"); | |
706 | } | |
8599ea4c FS |
707 | ret = 1; |
708 | goto fail; | |
c2abccec | 709 | } |
e076f338 | 710 | |
8599ea4c FS |
711 | if (check->corruptions) { |
712 | ret = 2; | |
713 | } else if (check->leaks) { | |
714 | ret = 3; | |
e076f338 | 715 | } else { |
8599ea4c | 716 | ret = 0; |
e076f338 | 717 | } |
8599ea4c FS |
718 | |
719 | fail: | |
720 | qapi_free_ImageCheck(check); | |
26f54e9a | 721 | blk_unref(blk); |
8599ea4c | 722 | return ret; |
1585969c AL |
723 | } |
724 | ||
ea2384d3 FB |
725 | static int img_commit(int argc, char **argv) |
726 | { | |
661a0f71 FS |
727 | int c, ret, flags; |
728 | const char *filename, *fmt, *cache; | |
26f54e9a | 729 | BlockBackend *blk; |
ea2384d3 | 730 | BlockDriverState *bs; |
f382d43a | 731 | bool quiet = false; |
ea2384d3 FB |
732 | |
733 | fmt = NULL; | |
661a0f71 | 734 | cache = BDRV_DEFAULT_CACHE; |
ea2384d3 | 735 | for(;;) { |
f382d43a | 736 | c = getopt(argc, argv, "f:ht:q"); |
b8fb60da | 737 | if (c == -1) { |
ea2384d3 | 738 | break; |
b8fb60da | 739 | } |
ea2384d3 | 740 | switch(c) { |
ef87394c | 741 | case '?': |
ea2384d3 FB |
742 | case 'h': |
743 | help(); | |
744 | break; | |
745 | case 'f': | |
746 | fmt = optarg; | |
747 | break; | |
661a0f71 FS |
748 | case 't': |
749 | cache = optarg; | |
750 | break; | |
f382d43a MR |
751 | case 'q': |
752 | quiet = true; | |
753 | break; | |
ea2384d3 FB |
754 | } |
755 | } | |
fc11eb26 | 756 | if (optind != argc - 1) { |
ac1307ab | 757 | error_exit("Expecting one image file name"); |
b8fb60da | 758 | } |
ea2384d3 FB |
759 | filename = argv[optind++]; |
760 | ||
661a0f71 | 761 | flags = BDRV_O_RDWR; |
c3993cdc | 762 | ret = bdrv_parse_cache_flags(cache, &flags); |
661a0f71 FS |
763 | if (ret < 0) { |
764 | error_report("Invalid cache option: %s", cache); | |
a3981eb9 | 765 | return 1; |
661a0f71 FS |
766 | } |
767 | ||
7e7d56d9 MA |
768 | blk = img_open("image", filename, fmt, flags, true, quiet); |
769 | if (!blk) { | |
770 | return 1; | |
c2abccec | 771 | } |
7e7d56d9 MA |
772 | bs = blk_bs(blk); |
773 | ||
ea2384d3 FB |
774 | ret = bdrv_commit(bs); |
775 | switch(ret) { | |
776 | case 0: | |
f382d43a | 777 | qprintf(quiet, "Image committed.\n"); |
ea2384d3 FB |
778 | break; |
779 | case -ENOENT: | |
15654a6d | 780 | error_report("No disk inserted"); |
ea2384d3 FB |
781 | break; |
782 | case -EACCES: | |
15654a6d | 783 | error_report("Image is read-only"); |
ea2384d3 FB |
784 | break; |
785 | case -ENOTSUP: | |
15654a6d | 786 | error_report("Image is already committed"); |
ea2384d3 FB |
787 | break; |
788 | default: | |
15654a6d | 789 | error_report("Error while committing image"); |
ea2384d3 FB |
790 | break; |
791 | } | |
792 | ||
26f54e9a | 793 | blk_unref(blk); |
c2abccec MK |
794 | if (ret) { |
795 | return 1; | |
796 | } | |
ea2384d3 FB |
797 | return 0; |
798 | } | |
799 | ||
f58c7b35 TS |
800 | /* |
801 | * Returns true iff the first sector pointed to by 'buf' contains at least | |
802 | * a non-NUL byte. | |
803 | * | |
804 | * 'pnum' is set to the number of sectors (including and immediately following | |
805 | * the first one) that are known to be in the same allocated/unallocated state. | |
806 | */ | |
ea2384d3 FB |
807 | static int is_allocated_sectors(const uint8_t *buf, int n, int *pnum) |
808 | { | |
1a6d39fd SH |
809 | bool is_zero; |
810 | int i; | |
ea2384d3 FB |
811 | |
812 | if (n <= 0) { | |
813 | *pnum = 0; | |
814 | return 0; | |
815 | } | |
1a6d39fd | 816 | is_zero = buffer_is_zero(buf, 512); |
ea2384d3 FB |
817 | for(i = 1; i < n; i++) { |
818 | buf += 512; | |
1a6d39fd | 819 | if (is_zero != buffer_is_zero(buf, 512)) { |
ea2384d3 | 820 | break; |
1a6d39fd | 821 | } |
ea2384d3 FB |
822 | } |
823 | *pnum = i; | |
1a6d39fd | 824 | return !is_zero; |
ea2384d3 FB |
825 | } |
826 | ||
a22f123c KW |
827 | /* |
828 | * Like is_allocated_sectors, but if the buffer starts with a used sector, | |
829 | * up to 'min' consecutive sectors containing zeros are ignored. This avoids | |
830 | * breaking up write requests for only small sparse areas. | |
831 | */ | |
832 | static int is_allocated_sectors_min(const uint8_t *buf, int n, int *pnum, | |
833 | int min) | |
834 | { | |
835 | int ret; | |
836 | int num_checked, num_used; | |
837 | ||
838 | if (n < min) { | |
839 | min = n; | |
840 | } | |
841 | ||
842 | ret = is_allocated_sectors(buf, n, pnum); | |
843 | if (!ret) { | |
844 | return ret; | |
845 | } | |
846 | ||
847 | num_used = *pnum; | |
848 | buf += BDRV_SECTOR_SIZE * *pnum; | |
849 | n -= *pnum; | |
850 | num_checked = num_used; | |
851 | ||
852 | while (n > 0) { | |
853 | ret = is_allocated_sectors(buf, n, pnum); | |
854 | ||
855 | buf += BDRV_SECTOR_SIZE * *pnum; | |
856 | n -= *pnum; | |
857 | num_checked += *pnum; | |
858 | if (ret) { | |
859 | num_used = num_checked; | |
860 | } else if (*pnum >= min) { | |
861 | break; | |
862 | } | |
863 | } | |
864 | ||
865 | *pnum = num_used; | |
866 | return 1; | |
867 | } | |
868 | ||
3e85c6fd KW |
869 | /* |
870 | * Compares two buffers sector by sector. Returns 0 if the first sector of both | |
871 | * buffers matches, non-zero otherwise. | |
872 | * | |
873 | * pnum is set to the number of sectors (including and immediately following | |
874 | * the first one) that are known to have the same comparison result | |
875 | */ | |
876 | static int compare_sectors(const uint8_t *buf1, const uint8_t *buf2, int n, | |
877 | int *pnum) | |
878 | { | |
879 | int res, i; | |
880 | ||
881 | if (n <= 0) { | |
882 | *pnum = 0; | |
883 | return 0; | |
884 | } | |
885 | ||
886 | res = !!memcmp(buf1, buf2, 512); | |
887 | for(i = 1; i < n; i++) { | |
888 | buf1 += 512; | |
889 | buf2 += 512; | |
890 | ||
891 | if (!!memcmp(buf1, buf2, 512) != res) { | |
892 | break; | |
893 | } | |
894 | } | |
895 | ||
896 | *pnum = i; | |
897 | return res; | |
898 | } | |
899 | ||
80ee15a6 | 900 | #define IO_BUF_SIZE (2 * 1024 * 1024) |
ea2384d3 | 901 | |
d14ed18c MR |
902 | static int64_t sectors_to_bytes(int64_t sectors) |
903 | { | |
904 | return sectors << BDRV_SECTOR_BITS; | |
905 | } | |
906 | ||
907 | static int64_t sectors_to_process(int64_t total, int64_t from) | |
908 | { | |
909 | return MIN(total - from, IO_BUF_SIZE >> BDRV_SECTOR_BITS); | |
910 | } | |
911 | ||
912 | /* | |
913 | * Check if passed sectors are empty (not allocated or contain only 0 bytes) | |
914 | * | |
915 | * Returns 0 in case sectors are filled with 0, 1 if sectors contain non-zero | |
916 | * data and negative value on error. | |
917 | * | |
918 | * @param bs: Driver used for accessing file | |
919 | * @param sect_num: Number of first sector to check | |
920 | * @param sect_count: Number of sectors to check | |
921 | * @param filename: Name of disk file we are checking (logging purpose) | |
922 | * @param buffer: Allocated buffer for storing read data | |
923 | * @param quiet: Flag for quiet mode | |
924 | */ | |
925 | static int check_empty_sectors(BlockDriverState *bs, int64_t sect_num, | |
926 | int sect_count, const char *filename, | |
927 | uint8_t *buffer, bool quiet) | |
928 | { | |
929 | int pnum, ret = 0; | |
930 | ret = bdrv_read(bs, sect_num, buffer, sect_count); | |
931 | if (ret < 0) { | |
932 | error_report("Error while reading offset %" PRId64 " of %s: %s", | |
933 | sectors_to_bytes(sect_num), filename, strerror(-ret)); | |
934 | return ret; | |
935 | } | |
936 | ret = is_allocated_sectors(buffer, sect_count, &pnum); | |
937 | if (ret || pnum != sect_count) { | |
938 | qprintf(quiet, "Content mismatch at offset %" PRId64 "!\n", | |
939 | sectors_to_bytes(ret ? sect_num : sect_num + pnum)); | |
940 | return 1; | |
941 | } | |
942 | ||
943 | return 0; | |
944 | } | |
945 | ||
946 | /* | |
947 | * Compares two images. Exit codes: | |
948 | * | |
949 | * 0 - Images are identical | |
950 | * 1 - Images differ | |
951 | * >1 - Error occurred | |
952 | */ | |
953 | static int img_compare(int argc, char **argv) | |
954 | { | |
40055951 | 955 | const char *fmt1 = NULL, *fmt2 = NULL, *cache, *filename1, *filename2; |
26f54e9a | 956 | BlockBackend *blk1, *blk2; |
d14ed18c MR |
957 | BlockDriverState *bs1, *bs2; |
958 | int64_t total_sectors1, total_sectors2; | |
959 | uint8_t *buf1 = NULL, *buf2 = NULL; | |
960 | int pnum1, pnum2; | |
961 | int allocated1, allocated2; | |
962 | int ret = 0; /* return value - 0 Ident, 1 Different, >1 Error */ | |
963 | bool progress = false, quiet = false, strict = false; | |
40055951 | 964 | int flags; |
d14ed18c MR |
965 | int64_t total_sectors; |
966 | int64_t sector_num = 0; | |
967 | int64_t nb_sectors; | |
968 | int c, pnum; | |
d14ed18c MR |
969 | uint64_t progress_base; |
970 | ||
40055951 | 971 | cache = BDRV_DEFAULT_CACHE; |
d14ed18c | 972 | for (;;) { |
40055951 | 973 | c = getopt(argc, argv, "hf:F:T:pqs"); |
d14ed18c MR |
974 | if (c == -1) { |
975 | break; | |
976 | } | |
977 | switch (c) { | |
978 | case '?': | |
979 | case 'h': | |
980 | help(); | |
981 | break; | |
982 | case 'f': | |
983 | fmt1 = optarg; | |
984 | break; | |
985 | case 'F': | |
986 | fmt2 = optarg; | |
987 | break; | |
40055951 HR |
988 | case 'T': |
989 | cache = optarg; | |
990 | break; | |
d14ed18c MR |
991 | case 'p': |
992 | progress = true; | |
993 | break; | |
994 | case 'q': | |
995 | quiet = true; | |
996 | break; | |
997 | case 's': | |
998 | strict = true; | |
999 | break; | |
1000 | } | |
1001 | } | |
1002 | ||
1003 | /* Progress is not shown in Quiet mode */ | |
1004 | if (quiet) { | |
1005 | progress = false; | |
1006 | } | |
1007 | ||
1008 | ||
fc11eb26 | 1009 | if (optind != argc - 2) { |
ac1307ab | 1010 | error_exit("Expecting two image file names"); |
d14ed18c MR |
1011 | } |
1012 | filename1 = argv[optind++]; | |
1013 | filename2 = argv[optind++]; | |
1014 | ||
cbda016d SH |
1015 | /* Initialize before goto out */ |
1016 | qemu_progress_init(progress, 2.0); | |
1017 | ||
40055951 HR |
1018 | flags = BDRV_O_FLAGS; |
1019 | ret = bdrv_parse_cache_flags(cache, &flags); | |
1020 | if (ret < 0) { | |
1021 | error_report("Invalid source cache option: %s", cache); | |
1022 | ret = 2; | |
1023 | goto out3; | |
1024 | } | |
1025 | ||
7e7d56d9 MA |
1026 | blk1 = img_open("image_1", filename1, fmt1, flags, true, quiet); |
1027 | if (!blk1) { | |
d14ed18c MR |
1028 | error_report("Can't open file %s", filename1); |
1029 | ret = 2; | |
7e7d56d9 | 1030 | goto out3; |
d14ed18c | 1031 | } |
7e7d56d9 | 1032 | bs1 = blk_bs(blk1); |
d14ed18c | 1033 | |
7e7d56d9 MA |
1034 | blk2 = img_open("image_2", filename2, fmt2, flags, true, quiet); |
1035 | if (!blk2) { | |
d14ed18c MR |
1036 | error_report("Can't open file %s", filename2); |
1037 | ret = 2; | |
7e7d56d9 | 1038 | goto out2; |
d14ed18c | 1039 | } |
7e7d56d9 | 1040 | bs2 = blk_bs(blk2); |
d14ed18c MR |
1041 | |
1042 | buf1 = qemu_blockalign(bs1, IO_BUF_SIZE); | |
1043 | buf2 = qemu_blockalign(bs2, IO_BUF_SIZE); | |
52bf1e72 MA |
1044 | total_sectors1 = bdrv_nb_sectors(bs1); |
1045 | if (total_sectors1 < 0) { | |
1046 | error_report("Can't get size of %s: %s", | |
1047 | filename1, strerror(-total_sectors1)); | |
1048 | ret = 4; | |
1049 | goto out; | |
1050 | } | |
1051 | total_sectors2 = bdrv_nb_sectors(bs2); | |
1052 | if (total_sectors2 < 0) { | |
1053 | error_report("Can't get size of %s: %s", | |
1054 | filename2, strerror(-total_sectors2)); | |
1055 | ret = 4; | |
1056 | goto out; | |
1057 | } | |
d14ed18c MR |
1058 | total_sectors = MIN(total_sectors1, total_sectors2); |
1059 | progress_base = MAX(total_sectors1, total_sectors2); | |
1060 | ||
1061 | qemu_progress_print(0, 100); | |
1062 | ||
1063 | if (strict && total_sectors1 != total_sectors2) { | |
1064 | ret = 1; | |
1065 | qprintf(quiet, "Strict mode: Image size mismatch!\n"); | |
1066 | goto out; | |
1067 | } | |
1068 | ||
1069 | for (;;) { | |
1070 | nb_sectors = sectors_to_process(total_sectors, sector_num); | |
1071 | if (nb_sectors <= 0) { | |
1072 | break; | |
1073 | } | |
1074 | allocated1 = bdrv_is_allocated_above(bs1, NULL, sector_num, nb_sectors, | |
1075 | &pnum1); | |
1076 | if (allocated1 < 0) { | |
1077 | ret = 3; | |
1078 | error_report("Sector allocation test failed for %s", filename1); | |
1079 | goto out; | |
1080 | } | |
1081 | ||
1082 | allocated2 = bdrv_is_allocated_above(bs2, NULL, sector_num, nb_sectors, | |
1083 | &pnum2); | |
1084 | if (allocated2 < 0) { | |
1085 | ret = 3; | |
1086 | error_report("Sector allocation test failed for %s", filename2); | |
1087 | goto out; | |
1088 | } | |
1089 | nb_sectors = MIN(pnum1, pnum2); | |
1090 | ||
1091 | if (allocated1 == allocated2) { | |
1092 | if (allocated1) { | |
1093 | ret = bdrv_read(bs1, sector_num, buf1, nb_sectors); | |
1094 | if (ret < 0) { | |
1095 | error_report("Error while reading offset %" PRId64 " of %s:" | |
1096 | " %s", sectors_to_bytes(sector_num), filename1, | |
1097 | strerror(-ret)); | |
1098 | ret = 4; | |
1099 | goto out; | |
1100 | } | |
1101 | ret = bdrv_read(bs2, sector_num, buf2, nb_sectors); | |
1102 | if (ret < 0) { | |
1103 | error_report("Error while reading offset %" PRId64 | |
1104 | " of %s: %s", sectors_to_bytes(sector_num), | |
1105 | filename2, strerror(-ret)); | |
1106 | ret = 4; | |
1107 | goto out; | |
1108 | } | |
1109 | ret = compare_sectors(buf1, buf2, nb_sectors, &pnum); | |
1110 | if (ret || pnum != nb_sectors) { | |
d14ed18c MR |
1111 | qprintf(quiet, "Content mismatch at offset %" PRId64 "!\n", |
1112 | sectors_to_bytes( | |
1113 | ret ? sector_num : sector_num + pnum)); | |
36452f12 | 1114 | ret = 1; |
d14ed18c MR |
1115 | goto out; |
1116 | } | |
1117 | } | |
1118 | } else { | |
1119 | if (strict) { | |
1120 | ret = 1; | |
1121 | qprintf(quiet, "Strict mode: Offset %" PRId64 | |
1122 | " allocation mismatch!\n", | |
1123 | sectors_to_bytes(sector_num)); | |
1124 | goto out; | |
1125 | } | |
1126 | ||
1127 | if (allocated1) { | |
1128 | ret = check_empty_sectors(bs1, sector_num, nb_sectors, | |
1129 | filename1, buf1, quiet); | |
1130 | } else { | |
1131 | ret = check_empty_sectors(bs2, sector_num, nb_sectors, | |
1132 | filename2, buf1, quiet); | |
1133 | } | |
1134 | if (ret) { | |
1135 | if (ret < 0) { | |
d14ed18c MR |
1136 | error_report("Error while reading offset %" PRId64 ": %s", |
1137 | sectors_to_bytes(sector_num), strerror(-ret)); | |
36452f12 | 1138 | ret = 4; |
d14ed18c MR |
1139 | } |
1140 | goto out; | |
1141 | } | |
1142 | } | |
1143 | sector_num += nb_sectors; | |
1144 | qemu_progress_print(((float) nb_sectors / progress_base)*100, 100); | |
1145 | } | |
1146 | ||
1147 | if (total_sectors1 != total_sectors2) { | |
1148 | BlockDriverState *bs_over; | |
1149 | int64_t total_sectors_over; | |
1150 | const char *filename_over; | |
1151 | ||
1152 | qprintf(quiet, "Warning: Image size mismatch!\n"); | |
1153 | if (total_sectors1 > total_sectors2) { | |
1154 | total_sectors_over = total_sectors1; | |
1155 | bs_over = bs1; | |
1156 | filename_over = filename1; | |
1157 | } else { | |
1158 | total_sectors_over = total_sectors2; | |
1159 | bs_over = bs2; | |
1160 | filename_over = filename2; | |
1161 | } | |
1162 | ||
1163 | for (;;) { | |
1164 | nb_sectors = sectors_to_process(total_sectors_over, sector_num); | |
1165 | if (nb_sectors <= 0) { | |
1166 | break; | |
1167 | } | |
1168 | ret = bdrv_is_allocated_above(bs_over, NULL, sector_num, | |
1169 | nb_sectors, &pnum); | |
1170 | if (ret < 0) { | |
1171 | ret = 3; | |
1172 | error_report("Sector allocation test failed for %s", | |
1173 | filename_over); | |
1174 | goto out; | |
1175 | ||
1176 | } | |
1177 | nb_sectors = pnum; | |
1178 | if (ret) { | |
1179 | ret = check_empty_sectors(bs_over, sector_num, nb_sectors, | |
1180 | filename_over, buf1, quiet); | |
1181 | if (ret) { | |
1182 | if (ret < 0) { | |
d14ed18c MR |
1183 | error_report("Error while reading offset %" PRId64 |
1184 | " of %s: %s", sectors_to_bytes(sector_num), | |
1185 | filename_over, strerror(-ret)); | |
36452f12 | 1186 | ret = 4; |
d14ed18c MR |
1187 | } |
1188 | goto out; | |
1189 | } | |
1190 | } | |
1191 | sector_num += nb_sectors; | |
1192 | qemu_progress_print(((float) nb_sectors / progress_base)*100, 100); | |
1193 | } | |
1194 | } | |
1195 | ||
1196 | qprintf(quiet, "Images are identical.\n"); | |
1197 | ret = 0; | |
1198 | ||
1199 | out: | |
d14ed18c MR |
1200 | qemu_vfree(buf1); |
1201 | qemu_vfree(buf2); | |
26f54e9a | 1202 | blk_unref(blk2); |
d14ed18c | 1203 | out2: |
26f54e9a | 1204 | blk_unref(blk1); |
d14ed18c MR |
1205 | out3: |
1206 | qemu_progress_end(); | |
1207 | return ret; | |
1208 | } | |
1209 | ||
ea2384d3 FB |
1210 | static int img_convert(int argc, char **argv) |
1211 | { | |
24f833cd | 1212 | int c, n, n1, bs_n, bs_i, compress, cluster_sectors, skip_create; |
13c28af8 | 1213 | int64_t ret = 0; |
40055951 HR |
1214 | int progress = 0, flags, src_flags; |
1215 | const char *fmt, *out_fmt, *cache, *src_cache, *out_baseimg, *out_filename; | |
b50cbabc | 1216 | BlockDriver *drv, *proto_drv; |
26f54e9a | 1217 | BlockBackend **blk = NULL, *out_blk = NULL; |
c2abccec | 1218 | BlockDriverState **bs = NULL, *out_bs = NULL; |
802c3d4c | 1219 | int64_t total_sectors, nb_sectors, sector_num, bs_offset; |
52bf1e72 | 1220 | int64_t *bs_sectors = NULL; |
c2abccec | 1221 | uint8_t * buf = NULL; |
f2521c90 | 1222 | size_t bufsectors = IO_BUF_SIZE / BDRV_SECTOR_SIZE; |
ea2384d3 | 1223 | const uint8_t *buf1; |
faea38e7 | 1224 | BlockDriverInfo bdi; |
83d0521a CL |
1225 | QemuOpts *opts = NULL; |
1226 | QemuOptsList *create_opts = NULL; | |
1227 | const char *out_baseimg_param; | |
efa84d43 | 1228 | char *options = NULL; |
51ef6727 | 1229 | const char *snapshot_name = NULL; |
a22f123c | 1230 | int min_sparse = 8; /* Need at least 4k of zeros for sparse detection */ |
f382d43a | 1231 | bool quiet = false; |
cc84d90f | 1232 | Error *local_err = NULL; |
ef80654d | 1233 | QemuOpts *sn_opts = NULL; |
ea2384d3 FB |
1234 | |
1235 | fmt = NULL; | |
1236 | out_fmt = "raw"; | |
661a0f71 | 1237 | cache = "unsafe"; |
40055951 | 1238 | src_cache = BDRV_DEFAULT_CACHE; |
f58c7b35 | 1239 | out_baseimg = NULL; |
eec77d9e | 1240 | compress = 0; |
b2e10493 | 1241 | skip_create = 0; |
ea2384d3 | 1242 | for(;;) { |
40055951 | 1243 | c = getopt(argc, argv, "hf:O:B:ce6o:s:l:S:pt:T:qn"); |
b8fb60da | 1244 | if (c == -1) { |
ea2384d3 | 1245 | break; |
b8fb60da | 1246 | } |
ea2384d3 | 1247 | switch(c) { |
ef87394c | 1248 | case '?': |
ea2384d3 FB |
1249 | case 'h': |
1250 | help(); | |
1251 | break; | |
1252 | case 'f': | |
1253 | fmt = optarg; | |
1254 | break; | |
1255 | case 'O': | |
1256 | out_fmt = optarg; | |
1257 | break; | |
f58c7b35 TS |
1258 | case 'B': |
1259 | out_baseimg = optarg; | |
1260 | break; | |
ea2384d3 | 1261 | case 'c': |
eec77d9e | 1262 | compress = 1; |
ea2384d3 FB |
1263 | break; |
1264 | case 'e': | |
9d42e15d | 1265 | error_report("option -e is deprecated, please use \'-o " |
eec77d9e | 1266 | "encryption\' instead!"); |
2dc8328b | 1267 | ret = -1; |
64bb01aa | 1268 | goto fail_getopt; |
ec36ba14 | 1269 | case '6': |
9d42e15d | 1270 | error_report("option -6 is deprecated, please use \'-o " |
eec77d9e | 1271 | "compat6\' instead!"); |
2dc8328b | 1272 | ret = -1; |
64bb01aa | 1273 | goto fail_getopt; |
efa84d43 | 1274 | case 'o': |
2dc8328b KW |
1275 | if (!is_valid_option_list(optarg)) { |
1276 | error_report("Invalid option list: %s", optarg); | |
1277 | ret = -1; | |
64bb01aa | 1278 | goto fail_getopt; |
2dc8328b KW |
1279 | } |
1280 | if (!options) { | |
1281 | options = g_strdup(optarg); | |
1282 | } else { | |
1283 | char *old_options = options; | |
1284 | options = g_strdup_printf("%s,%s", options, optarg); | |
1285 | g_free(old_options); | |
1286 | } | |
efa84d43 | 1287 | break; |
51ef6727 | 1288 | case 's': |
1289 | snapshot_name = optarg; | |
1290 | break; | |
ef80654d WX |
1291 | case 'l': |
1292 | if (strstart(optarg, SNAPSHOT_OPT_BASE, NULL)) { | |
1293 | sn_opts = qemu_opts_parse(&internal_snapshot_opts, optarg, 0); | |
1294 | if (!sn_opts) { | |
1295 | error_report("Failed in parsing snapshot param '%s'", | |
1296 | optarg); | |
2dc8328b | 1297 | ret = -1; |
64bb01aa | 1298 | goto fail_getopt; |
ef80654d WX |
1299 | } |
1300 | } else { | |
1301 | snapshot_name = optarg; | |
1302 | } | |
1303 | break; | |
a22f123c KW |
1304 | case 'S': |
1305 | { | |
1306 | int64_t sval; | |
e36b3695 MA |
1307 | char *end; |
1308 | sval = strtosz_suffix(optarg, &end, STRTOSZ_DEFSUFFIX_B); | |
1309 | if (sval < 0 || *end) { | |
a22f123c | 1310 | error_report("Invalid minimum zero buffer size for sparse output specified"); |
2dc8328b | 1311 | ret = -1; |
64bb01aa | 1312 | goto fail_getopt; |
a22f123c KW |
1313 | } |
1314 | ||
1315 | min_sparse = sval / BDRV_SECTOR_SIZE; | |
1316 | break; | |
1317 | } | |
6b837bc4 JS |
1318 | case 'p': |
1319 | progress = 1; | |
1320 | break; | |
661a0f71 FS |
1321 | case 't': |
1322 | cache = optarg; | |
1323 | break; | |
40055951 HR |
1324 | case 'T': |
1325 | src_cache = optarg; | |
1326 | break; | |
f382d43a MR |
1327 | case 'q': |
1328 | quiet = true; | |
1329 | break; | |
b2e10493 AD |
1330 | case 'n': |
1331 | skip_create = 1; | |
1332 | break; | |
ea2384d3 FB |
1333 | } |
1334 | } | |
3b46e624 | 1335 | |
64bb01aa | 1336 | /* Initialize before goto out */ |
f382d43a MR |
1337 | if (quiet) { |
1338 | progress = 0; | |
1339 | } | |
64bb01aa KW |
1340 | qemu_progress_init(progress, 1.0); |
1341 | ||
f382d43a | 1342 | |
926c2d23 | 1343 | bs_n = argc - optind - 1; |
a283cb6e | 1344 | out_filename = bs_n >= 1 ? argv[argc - 1] : NULL; |
f58c7b35 | 1345 | |
2dc8328b | 1346 | if (options && has_help_option(options)) { |
4ac8aacd JS |
1347 | ret = print_block_option_help(out_filename, out_fmt); |
1348 | goto out; | |
1349 | } | |
1350 | ||
a283cb6e | 1351 | if (bs_n < 1) { |
ac1307ab | 1352 | error_exit("Must specify image file name"); |
a283cb6e KW |
1353 | } |
1354 | ||
1355 | ||
c2abccec | 1356 | if (bs_n > 1 && out_baseimg) { |
15654a6d JS |
1357 | error_report("-B makes no sense when concatenating multiple input " |
1358 | "images"); | |
31ca34b8 JS |
1359 | ret = -1; |
1360 | goto out; | |
c2abccec | 1361 | } |
f8111c24 | 1362 | |
40055951 HR |
1363 | src_flags = BDRV_O_FLAGS; |
1364 | ret = bdrv_parse_cache_flags(src_cache, &src_flags); | |
1365 | if (ret < 0) { | |
1366 | error_report("Invalid source cache option: %s", src_cache); | |
1367 | goto out; | |
1368 | } | |
1369 | ||
6b837bc4 JS |
1370 | qemu_progress_print(0, 100); |
1371 | ||
26f54e9a | 1372 | blk = g_new0(BlockBackend *, bs_n); |
d739f1c4 | 1373 | bs = g_new0(BlockDriverState *, bs_n); |
52bf1e72 | 1374 | bs_sectors = g_new(int64_t, bs_n); |
926c2d23 AZ |
1375 | |
1376 | total_sectors = 0; | |
1377 | for (bs_i = 0; bs_i < bs_n; bs_i++) { | |
9aebf3b8 | 1378 | char *id = bs_n > 1 ? g_strdup_printf("source_%d", bs_i) |
9ffe3332 | 1379 | : g_strdup("source"); |
7e7d56d9 MA |
1380 | blk[bs_i] = img_open(id, argv[optind + bs_i], fmt, src_flags, |
1381 | true, quiet); | |
9ffe3332 | 1382 | g_free(id); |
7e7d56d9 | 1383 | if (!blk[bs_i]) { |
15654a6d | 1384 | error_report("Could not open '%s'", argv[optind + bs_i]); |
c2abccec MK |
1385 | ret = -1; |
1386 | goto out; | |
1387 | } | |
7e7d56d9 | 1388 | bs[bs_i] = blk_bs(blk[bs_i]); |
52bf1e72 MA |
1389 | bs_sectors[bs_i] = bdrv_nb_sectors(bs[bs_i]); |
1390 | if (bs_sectors[bs_i] < 0) { | |
1391 | error_report("Could not get size of %s: %s", | |
1392 | argv[optind + bs_i], strerror(-bs_sectors[bs_i])); | |
1393 | ret = -1; | |
1394 | goto out; | |
1395 | } | |
d739f1c4 | 1396 | total_sectors += bs_sectors[bs_i]; |
926c2d23 | 1397 | } |
ea2384d3 | 1398 | |
ef80654d WX |
1399 | if (sn_opts) { |
1400 | ret = bdrv_snapshot_load_tmp(bs[0], | |
1401 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_ID), | |
1402 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_NAME), | |
1403 | &local_err); | |
1404 | } else if (snapshot_name != NULL) { | |
51ef6727 | 1405 | if (bs_n > 1) { |
6daf194d | 1406 | error_report("No support for concatenating multiple snapshot"); |
51ef6727 | 1407 | ret = -1; |
1408 | goto out; | |
1409 | } | |
7b4c4781 WX |
1410 | |
1411 | bdrv_snapshot_load_tmp_by_id_or_name(bs[0], snapshot_name, &local_err); | |
ef80654d | 1412 | } |
84d18f06 | 1413 | if (local_err) { |
ef80654d WX |
1414 | error_report("Failed to load snapshot: %s", |
1415 | error_get_pretty(local_err)); | |
1416 | error_free(local_err); | |
1417 | ret = -1; | |
1418 | goto out; | |
51ef6727 | 1419 | } |
1420 | ||
efa84d43 | 1421 | /* Find driver and parse its options */ |
ea2384d3 | 1422 | drv = bdrv_find_format(out_fmt); |
c2abccec | 1423 | if (!drv) { |
15654a6d | 1424 | error_report("Unknown file format '%s'", out_fmt); |
c2abccec MK |
1425 | ret = -1; |
1426 | goto out; | |
1427 | } | |
efa84d43 | 1428 | |
98289620 | 1429 | proto_drv = bdrv_find_protocol(out_filename, true); |
c2abccec | 1430 | if (!proto_drv) { |
15654a6d | 1431 | error_report("Unknown protocol '%s'", out_filename); |
c2abccec MK |
1432 | ret = -1; |
1433 | goto out; | |
1434 | } | |
b50cbabc | 1435 | |
c282e1fd CL |
1436 | create_opts = qemu_opts_append(create_opts, drv->create_opts); |
1437 | create_opts = qemu_opts_append(create_opts, proto_drv->create_opts); | |
db08adf5 | 1438 | |
83d0521a CL |
1439 | opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); |
1440 | if (options && qemu_opts_do_parse(opts, options, NULL)) { | |
1441 | error_report("Invalid options for file format '%s'", out_fmt); | |
1442 | ret = -1; | |
1443 | goto out; | |
efa84d43 KW |
1444 | } |
1445 | ||
83d0521a CL |
1446 | qemu_opt_set_number(opts, BLOCK_OPT_SIZE, total_sectors * 512); |
1447 | ret = add_old_style_options(out_fmt, opts, out_baseimg, NULL); | |
c2abccec MK |
1448 | if (ret < 0) { |
1449 | goto out; | |
1450 | } | |
efa84d43 | 1451 | |
a18953fb | 1452 | /* Get backing file name if -o backing_file was used */ |
83d0521a | 1453 | out_baseimg_param = qemu_opt_get(opts, BLOCK_OPT_BACKING_FILE); |
a18953fb | 1454 | if (out_baseimg_param) { |
83d0521a | 1455 | out_baseimg = out_baseimg_param; |
a18953fb KW |
1456 | } |
1457 | ||
efa84d43 | 1458 | /* Check if compression is supported */ |
eec77d9e | 1459 | if (compress) { |
83d0521a CL |
1460 | bool encryption = |
1461 | qemu_opt_get_bool(opts, BLOCK_OPT_ENCRYPT, false); | |
1462 | const char *preallocation = | |
1463 | qemu_opt_get(opts, BLOCK_OPT_PREALLOC); | |
efa84d43 KW |
1464 | |
1465 | if (!drv->bdrv_write_compressed) { | |
15654a6d | 1466 | error_report("Compression not supported for this file format"); |
c2abccec MK |
1467 | ret = -1; |
1468 | goto out; | |
efa84d43 KW |
1469 | } |
1470 | ||
83d0521a | 1471 | if (encryption) { |
15654a6d JS |
1472 | error_report("Compression and encryption not supported at " |
1473 | "the same time"); | |
c2abccec MK |
1474 | ret = -1; |
1475 | goto out; | |
efa84d43 | 1476 | } |
41521fa4 | 1477 | |
83d0521a CL |
1478 | if (preallocation |
1479 | && strcmp(preallocation, "off")) | |
41521fa4 KW |
1480 | { |
1481 | error_report("Compression and preallocation not supported at " | |
1482 | "the same time"); | |
1483 | ret = -1; | |
1484 | goto out; | |
1485 | } | |
efa84d43 KW |
1486 | } |
1487 | ||
b2e10493 AD |
1488 | if (!skip_create) { |
1489 | /* Create the new image */ | |
c282e1fd | 1490 | ret = bdrv_create(drv, out_filename, opts, &local_err); |
b2e10493 | 1491 | if (ret < 0) { |
cc84d90f HR |
1492 | error_report("%s: error while converting %s: %s", |
1493 | out_filename, out_fmt, error_get_pretty(local_err)); | |
1494 | error_free(local_err); | |
b2e10493 | 1495 | goto out; |
ea2384d3 FB |
1496 | } |
1497 | } | |
3b46e624 | 1498 | |
5a37b60a | 1499 | flags = min_sparse ? (BDRV_O_RDWR | BDRV_O_UNMAP) : BDRV_O_RDWR; |
c3993cdc | 1500 | ret = bdrv_parse_cache_flags(cache, &flags); |
661a0f71 FS |
1501 | if (ret < 0) { |
1502 | error_report("Invalid cache option: %s", cache); | |
bb9cd2ee | 1503 | goto out; |
661a0f71 FS |
1504 | } |
1505 | ||
7e7d56d9 MA |
1506 | out_blk = img_open("target", out_filename, out_fmt, flags, true, quiet); |
1507 | if (!out_blk) { | |
c2abccec MK |
1508 | ret = -1; |
1509 | goto out; | |
1510 | } | |
7e7d56d9 | 1511 | out_bs = blk_bs(out_blk); |
ea2384d3 | 1512 | |
926c2d23 AZ |
1513 | bs_i = 0; |
1514 | bs_offset = 0; | |
f2521c90 PL |
1515 | |
1516 | /* increase bufsectors from the default 4096 (2M) if opt_transfer_length | |
1517 | * or discard_alignment of the out_bs is greater. Limit to 32768 (16MB) | |
1518 | * as maximum. */ | |
1519 | bufsectors = MIN(32768, | |
1520 | MAX(bufsectors, MAX(out_bs->bl.opt_transfer_length, | |
1521 | out_bs->bl.discard_alignment)) | |
1522 | ); | |
1523 | ||
1524 | buf = qemu_blockalign(out_bs, bufsectors * BDRV_SECTOR_SIZE); | |
926c2d23 | 1525 | |
b2e10493 | 1526 | if (skip_create) { |
43716fa8 MA |
1527 | int64_t output_sectors = bdrv_nb_sectors(out_bs); |
1528 | if (output_sectors < 0) { | |
b2e10493 | 1529 | error_report("unable to get output image length: %s\n", |
43716fa8 | 1530 | strerror(-output_sectors)); |
b2e10493 AD |
1531 | ret = -1; |
1532 | goto out; | |
43716fa8 | 1533 | } else if (output_sectors < total_sectors) { |
b2e10493 AD |
1534 | error_report("output file is smaller than input file"); |
1535 | ret = -1; | |
1536 | goto out; | |
1537 | } | |
1538 | } | |
1539 | ||
24f833cd PL |
1540 | cluster_sectors = 0; |
1541 | ret = bdrv_get_info(out_bs, &bdi); | |
1542 | if (ret < 0) { | |
1543 | if (compress) { | |
15654a6d | 1544 | error_report("could not get block driver info"); |
c2abccec MK |
1545 | goto out; |
1546 | } | |
24f833cd | 1547 | } else { |
85f49cad | 1548 | compress = compress || bdi.needs_compressed_writes; |
24f833cd PL |
1549 | cluster_sectors = bdi.cluster_size / BDRV_SECTOR_SIZE; |
1550 | } | |
1551 | ||
1552 | if (compress) { | |
1553 | if (cluster_sectors <= 0 || cluster_sectors > bufsectors) { | |
15654a6d | 1554 | error_report("invalid cluster size"); |
c2abccec MK |
1555 | ret = -1; |
1556 | goto out; | |
1557 | } | |
ea2384d3 | 1558 | sector_num = 0; |
6b837bc4 JS |
1559 | |
1560 | nb_sectors = total_sectors; | |
6b837bc4 | 1561 | |
ea2384d3 | 1562 | for(;;) { |
926c2d23 AZ |
1563 | int64_t bs_num; |
1564 | int remainder; | |
1565 | uint8_t *buf2; | |
1566 | ||
ea2384d3 FB |
1567 | nb_sectors = total_sectors - sector_num; |
1568 | if (nb_sectors <= 0) | |
1569 | break; | |
1570 | if (nb_sectors >= cluster_sectors) | |
1571 | n = cluster_sectors; | |
1572 | else | |
1573 | n = nb_sectors; | |
926c2d23 AZ |
1574 | |
1575 | bs_num = sector_num - bs_offset; | |
1576 | assert (bs_num >= 0); | |
1577 | remainder = n; | |
1578 | buf2 = buf; | |
1579 | while (remainder > 0) { | |
1580 | int nlow; | |
d739f1c4 MA |
1581 | while (bs_num == bs_sectors[bs_i]) { |
1582 | bs_offset += bs_sectors[bs_i]; | |
926c2d23 AZ |
1583 | bs_i++; |
1584 | assert (bs_i < bs_n); | |
926c2d23 | 1585 | bs_num = 0; |
0bfcd599 BS |
1586 | /* printf("changing part: sector_num=%" PRId64 ", " |
1587 | "bs_i=%d, bs_offset=%" PRId64 ", bs_sectors=%" PRId64 | |
d739f1c4 | 1588 | "\n", sector_num, bs_i, bs_offset, bs_sectors[bs_i]); */ |
926c2d23 | 1589 | } |
d739f1c4 | 1590 | assert (bs_num < bs_sectors[bs_i]); |
926c2d23 | 1591 | |
d739f1c4 MA |
1592 | nlow = remainder > bs_sectors[bs_i] - bs_num |
1593 | ? bs_sectors[bs_i] - bs_num : remainder; | |
926c2d23 | 1594 | |
c2abccec MK |
1595 | ret = bdrv_read(bs[bs_i], bs_num, buf2, nlow); |
1596 | if (ret < 0) { | |
3fba9d81 SH |
1597 | error_report("error while reading sector %" PRId64 ": %s", |
1598 | bs_num, strerror(-ret)); | |
c2abccec MK |
1599 | goto out; |
1600 | } | |
926c2d23 AZ |
1601 | |
1602 | buf2 += nlow * 512; | |
1603 | bs_num += nlow; | |
1604 | ||
1605 | remainder -= nlow; | |
1606 | } | |
1607 | assert (remainder == 0); | |
1608 | ||
54f106d5 SH |
1609 | if (!buffer_is_zero(buf, n * BDRV_SECTOR_SIZE)) { |
1610 | ret = bdrv_write_compressed(out_bs, sector_num, buf, n); | |
c2abccec | 1611 | if (ret != 0) { |
3fba9d81 SH |
1612 | error_report("error while compressing sector %" PRId64 |
1613 | ": %s", sector_num, strerror(-ret)); | |
c2abccec MK |
1614 | goto out; |
1615 | } | |
ea2384d3 FB |
1616 | } |
1617 | sector_num += n; | |
13c28af8 | 1618 | qemu_progress_print(100.0 * sector_num / total_sectors, 0); |
ea2384d3 | 1619 | } |
faea38e7 FB |
1620 | /* signal EOF to align */ |
1621 | bdrv_write_compressed(out_bs, 0, NULL, 0); | |
ea2384d3 | 1622 | } else { |
802c3d4c PL |
1623 | int64_t sectors_to_read, sectors_read, sector_num_next_status; |
1624 | bool count_allocated_sectors; | |
11b6699a | 1625 | int has_zero_init = min_sparse ? bdrv_has_zero_init(out_bs) : 0; |
f2feebbd | 1626 | |
5a37b60a PL |
1627 | if (!has_zero_init && bdrv_can_write_zeroes_with_unmap(out_bs)) { |
1628 | ret = bdrv_make_zero(out_bs, BDRV_REQ_MAY_UNMAP); | |
1629 | if (ret < 0) { | |
1630 | goto out; | |
1631 | } | |
1632 | has_zero_init = 1; | |
1633 | } | |
1634 | ||
802c3d4c PL |
1635 | sectors_to_read = total_sectors; |
1636 | count_allocated_sectors = progress && (out_baseimg || has_zero_init); | |
1637 | restart: | |
f58c7b35 | 1638 | sector_num = 0; // total number of sectors converted so far |
802c3d4c PL |
1639 | sectors_read = 0; |
1640 | sector_num_next_status = 0; | |
6b837bc4 | 1641 | |
ea2384d3 FB |
1642 | for(;;) { |
1643 | nb_sectors = total_sectors - sector_num; | |
b8fb60da | 1644 | if (nb_sectors <= 0) { |
802c3d4c PL |
1645 | if (count_allocated_sectors) { |
1646 | sectors_to_read = sectors_read; | |
1647 | count_allocated_sectors = false; | |
1648 | goto restart; | |
1649 | } | |
13c28af8 | 1650 | ret = 0; |
ea2384d3 | 1651 | break; |
b8fb60da | 1652 | } |
926c2d23 | 1653 | |
d739f1c4 MA |
1654 | while (sector_num - bs_offset >= bs_sectors[bs_i]) { |
1655 | bs_offset += bs_sectors[bs_i]; | |
926c2d23 AZ |
1656 | bs_i ++; |
1657 | assert (bs_i < bs_n); | |
0bfcd599 BS |
1658 | /* printf("changing part: sector_num=%" PRId64 ", bs_i=%d, " |
1659 | "bs_offset=%" PRId64 ", bs_sectors=%" PRId64 "\n", | |
d739f1c4 | 1660 | sector_num, bs_i, bs_offset, bs_sectors[bs_i]); */ |
926c2d23 AZ |
1661 | } |
1662 | ||
13c28af8 PL |
1663 | if ((out_baseimg || has_zero_init) && |
1664 | sector_num >= sector_num_next_status) { | |
1665 | n = nb_sectors > INT_MAX ? INT_MAX : nb_sectors; | |
1666 | ret = bdrv_get_block_status(bs[bs_i], sector_num - bs_offset, | |
1667 | n, &n1); | |
e4a86f88 | 1668 | if (ret < 0) { |
13c28af8 PL |
1669 | error_report("error while reading block status of sector %" |
1670 | PRId64 ": %s", sector_num - bs_offset, | |
1671 | strerror(-ret)); | |
e4a86f88 PB |
1672 | goto out; |
1673 | } | |
13c28af8 PL |
1674 | /* If the output image is zero initialized, we are not working |
1675 | * on a shared base and the input is zero we can skip the next | |
1676 | * n1 sectors */ | |
1677 | if (has_zero_init && !out_baseimg && (ret & BDRV_BLOCK_ZERO)) { | |
e4a86f88 PB |
1678 | sector_num += n1; |
1679 | continue; | |
93c65b47 | 1680 | } |
13c28af8 PL |
1681 | /* If the output image is being created as a copy on write |
1682 | * image, assume that sectors which are unallocated in the | |
1683 | * input image are present in both the output's and input's | |
1684 | * base images (no need to copy them). */ | |
1685 | if (out_baseimg) { | |
1686 | if (!(ret & BDRV_BLOCK_DATA)) { | |
1687 | sector_num += n1; | |
1688 | continue; | |
1689 | } | |
1690 | /* The next 'n1' sectors are allocated in the input image. | |
1691 | * Copy only those as they may be followed by unallocated | |
1692 | * sectors. */ | |
1693 | nb_sectors = n1; | |
1694 | } | |
1695 | /* avoid redundant callouts to get_block_status */ | |
1696 | sector_num_next_status = sector_num + n1; | |
f58c7b35 TS |
1697 | } |
1698 | ||
f2521c90 | 1699 | n = MIN(nb_sectors, bufsectors); |
24f833cd PL |
1700 | |
1701 | /* round down request length to an aligned sector, but | |
1702 | * do not bother doing this on short requests. They happen | |
1703 | * when we found an all-zero area, and the next sector to | |
1704 | * write will not be sector_num + n. */ | |
1705 | if (cluster_sectors > 0 && n >= cluster_sectors) { | |
1706 | int64_t next_aligned_sector = (sector_num + n); | |
1707 | next_aligned_sector -= next_aligned_sector % cluster_sectors; | |
1708 | if (sector_num + n > next_aligned_sector) { | |
1709 | n = next_aligned_sector - sector_num; | |
1710 | } | |
1711 | } | |
1712 | ||
d739f1c4 | 1713 | n = MIN(n, bs_sectors[bs_i] - (sector_num - bs_offset)); |
13c28af8 | 1714 | |
802c3d4c PL |
1715 | sectors_read += n; |
1716 | if (count_allocated_sectors) { | |
1717 | sector_num += n; | |
1718 | continue; | |
1719 | } | |
1720 | ||
1721 | n1 = n; | |
c2abccec MK |
1722 | ret = bdrv_read(bs[bs_i], sector_num - bs_offset, buf, n); |
1723 | if (ret < 0) { | |
3fba9d81 SH |
1724 | error_report("error while reading sector %" PRId64 ": %s", |
1725 | sector_num - bs_offset, strerror(-ret)); | |
c2abccec MK |
1726 | goto out; |
1727 | } | |
ea2384d3 FB |
1728 | /* NOTE: at the same time we convert, we do not write zero |
1729 | sectors to have a chance to compress the image. Ideally, we | |
1730 | should add a specific call to have the info to go faster */ | |
1731 | buf1 = buf; | |
1732 | while (n > 0) { | |
11212d8f | 1733 | if (!has_zero_init || |
a22f123c | 1734 | is_allocated_sectors_min(buf1, n, &n1, min_sparse)) { |
c2abccec MK |
1735 | ret = bdrv_write(out_bs, sector_num, buf1, n1); |
1736 | if (ret < 0) { | |
3fba9d81 SH |
1737 | error_report("error while writing sector %" PRId64 |
1738 | ": %s", sector_num, strerror(-ret)); | |
c2abccec MK |
1739 | goto out; |
1740 | } | |
ea2384d3 FB |
1741 | } |
1742 | sector_num += n1; | |
1743 | n -= n1; | |
1744 | buf1 += n1 * 512; | |
1745 | } | |
802c3d4c | 1746 | qemu_progress_print(100.0 * sectors_read / sectors_to_read, 0); |
ea2384d3 FB |
1747 | } |
1748 | } | |
c2abccec | 1749 | out: |
13c28af8 PL |
1750 | if (!ret) { |
1751 | qemu_progress_print(100, 0); | |
1752 | } | |
6b837bc4 | 1753 | qemu_progress_end(); |
83d0521a CL |
1754 | qemu_opts_del(opts); |
1755 | qemu_opts_free(create_opts); | |
bb1c0597 | 1756 | qemu_vfree(buf); |
fbf28a43 | 1757 | qemu_opts_del(sn_opts); |
26f54e9a | 1758 | blk_unref(out_blk); |
9ba10c95 | 1759 | g_free(bs); |
26f54e9a MA |
1760 | if (blk) { |
1761 | for (bs_i = 0; bs_i < bs_n; bs_i++) { | |
1762 | blk_unref(blk[bs_i]); | |
1763 | } | |
1764 | g_free(blk); | |
1765 | } | |
d739f1c4 | 1766 | g_free(bs_sectors); |
64bb01aa KW |
1767 | fail_getopt: |
1768 | g_free(options); | |
1769 | ||
c2abccec MK |
1770 | if (ret) { |
1771 | return 1; | |
1772 | } | |
ea2384d3 FB |
1773 | return 0; |
1774 | } | |
1775 | ||
57d1a2b6 | 1776 | |
faea38e7 FB |
1777 | static void dump_snapshots(BlockDriverState *bs) |
1778 | { | |
1779 | QEMUSnapshotInfo *sn_tab, *sn; | |
1780 | int nb_sns, i; | |
faea38e7 FB |
1781 | |
1782 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
1783 | if (nb_sns <= 0) | |
1784 | return; | |
1785 | printf("Snapshot list:\n"); | |
5b917044 WX |
1786 | bdrv_snapshot_dump(fprintf, stdout, NULL); |
1787 | printf("\n"); | |
faea38e7 FB |
1788 | for(i = 0; i < nb_sns; i++) { |
1789 | sn = &sn_tab[i]; | |
5b917044 WX |
1790 | bdrv_snapshot_dump(fprintf, stdout, sn); |
1791 | printf("\n"); | |
faea38e7 | 1792 | } |
7267c094 | 1793 | g_free(sn_tab); |
faea38e7 FB |
1794 | } |
1795 | ||
9699bf0d SH |
1796 | static void dump_json_image_info_list(ImageInfoList *list) |
1797 | { | |
4399c438 | 1798 | Error *local_err = NULL; |
9699bf0d SH |
1799 | QString *str; |
1800 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
1801 | QObject *obj; | |
1802 | visit_type_ImageInfoList(qmp_output_get_visitor(ov), | |
4399c438 | 1803 | &list, NULL, &local_err); |
9699bf0d SH |
1804 | obj = qmp_output_get_qobject(ov); |
1805 | str = qobject_to_json_pretty(obj); | |
1806 | assert(str != NULL); | |
1807 | printf("%s\n", qstring_get_str(str)); | |
1808 | qobject_decref(obj); | |
1809 | qmp_output_visitor_cleanup(ov); | |
1810 | QDECREF(str); | |
1811 | } | |
1812 | ||
c054b3fd BC |
1813 | static void dump_json_image_info(ImageInfo *info) |
1814 | { | |
4399c438 | 1815 | Error *local_err = NULL; |
c054b3fd BC |
1816 | QString *str; |
1817 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
1818 | QObject *obj; | |
1819 | visit_type_ImageInfo(qmp_output_get_visitor(ov), | |
4399c438 | 1820 | &info, NULL, &local_err); |
c054b3fd BC |
1821 | obj = qmp_output_get_qobject(ov); |
1822 | str = qobject_to_json_pretty(obj); | |
1823 | assert(str != NULL); | |
1824 | printf("%s\n", qstring_get_str(str)); | |
1825 | qobject_decref(obj); | |
1826 | qmp_output_visitor_cleanup(ov); | |
1827 | QDECREF(str); | |
1828 | } | |
1829 | ||
9699bf0d SH |
1830 | static void dump_human_image_info_list(ImageInfoList *list) |
1831 | { | |
1832 | ImageInfoList *elem; | |
1833 | bool delim = false; | |
1834 | ||
1835 | for (elem = list; elem; elem = elem->next) { | |
1836 | if (delim) { | |
1837 | printf("\n"); | |
1838 | } | |
1839 | delim = true; | |
1840 | ||
5b917044 | 1841 | bdrv_image_info_dump(fprintf, stdout, elem->value); |
9699bf0d SH |
1842 | } |
1843 | } | |
1844 | ||
1845 | static gboolean str_equal_func(gconstpointer a, gconstpointer b) | |
1846 | { | |
1847 | return strcmp(a, b) == 0; | |
1848 | } | |
1849 | ||
1850 | /** | |
1851 | * Open an image file chain and return an ImageInfoList | |
1852 | * | |
1853 | * @filename: topmost image filename | |
1854 | * @fmt: topmost image format (may be NULL to autodetect) | |
1855 | * @chain: true - enumerate entire backing file chain | |
1856 | * false - only topmost image file | |
1857 | * | |
1858 | * Returns a list of ImageInfo objects or NULL if there was an error opening an | |
1859 | * image file. If there was an error a message will have been printed to | |
1860 | * stderr. | |
1861 | */ | |
1862 | static ImageInfoList *collect_image_info_list(const char *filename, | |
1863 | const char *fmt, | |
1864 | bool chain) | |
1865 | { | |
1866 | ImageInfoList *head = NULL; | |
1867 | ImageInfoList **last = &head; | |
1868 | GHashTable *filenames; | |
43526ec8 | 1869 | Error *err = NULL; |
9699bf0d SH |
1870 | |
1871 | filenames = g_hash_table_new_full(g_str_hash, str_equal_func, NULL, NULL); | |
1872 | ||
1873 | while (filename) { | |
26f54e9a | 1874 | BlockBackend *blk; |
9699bf0d SH |
1875 | BlockDriverState *bs; |
1876 | ImageInfo *info; | |
1877 | ImageInfoList *elem; | |
1878 | ||
1879 | if (g_hash_table_lookup_extended(filenames, filename, NULL, NULL)) { | |
1880 | error_report("Backing file '%s' creates an infinite loop.", | |
1881 | filename); | |
1882 | goto err; | |
1883 | } | |
1884 | g_hash_table_insert(filenames, (gpointer)filename, NULL); | |
1885 | ||
7e7d56d9 MA |
1886 | blk = img_open("image", filename, fmt, |
1887 | BDRV_O_FLAGS | BDRV_O_NO_BACKING, false, false); | |
1888 | if (!blk) { | |
9699bf0d SH |
1889 | goto err; |
1890 | } | |
7e7d56d9 | 1891 | bs = blk_bs(blk); |
9699bf0d | 1892 | |
43526ec8 | 1893 | bdrv_query_image_info(bs, &info, &err); |
84d18f06 | 1894 | if (err) { |
43526ec8 WX |
1895 | error_report("%s", error_get_pretty(err)); |
1896 | error_free(err); | |
26f54e9a | 1897 | blk_unref(blk); |
43526ec8 | 1898 | goto err; |
fb0ed453 | 1899 | } |
9699bf0d SH |
1900 | |
1901 | elem = g_new0(ImageInfoList, 1); | |
1902 | elem->value = info; | |
1903 | *last = elem; | |
1904 | last = &elem->next; | |
1905 | ||
26f54e9a | 1906 | blk_unref(blk); |
9699bf0d SH |
1907 | |
1908 | filename = fmt = NULL; | |
1909 | if (chain) { | |
1910 | if (info->has_full_backing_filename) { | |
1911 | filename = info->full_backing_filename; | |
1912 | } else if (info->has_backing_filename) { | |
1913 | filename = info->backing_filename; | |
1914 | } | |
1915 | if (info->has_backing_filename_format) { | |
1916 | fmt = info->backing_filename_format; | |
1917 | } | |
1918 | } | |
1919 | } | |
1920 | g_hash_table_destroy(filenames); | |
1921 | return head; | |
1922 | ||
1923 | err: | |
1924 | qapi_free_ImageInfoList(head); | |
1925 | g_hash_table_destroy(filenames); | |
1926 | return NULL; | |
1927 | } | |
1928 | ||
c054b3fd BC |
1929 | static int img_info(int argc, char **argv) |
1930 | { | |
1931 | int c; | |
1932 | OutputFormat output_format = OFORMAT_HUMAN; | |
9699bf0d | 1933 | bool chain = false; |
c054b3fd | 1934 | const char *filename, *fmt, *output; |
9699bf0d | 1935 | ImageInfoList *list; |
c054b3fd | 1936 | |
ea2384d3 | 1937 | fmt = NULL; |
c054b3fd | 1938 | output = NULL; |
ea2384d3 | 1939 | for(;;) { |
c054b3fd BC |
1940 | int option_index = 0; |
1941 | static const struct option long_options[] = { | |
1942 | {"help", no_argument, 0, 'h'}, | |
1943 | {"format", required_argument, 0, 'f'}, | |
1944 | {"output", required_argument, 0, OPTION_OUTPUT}, | |
9699bf0d | 1945 | {"backing-chain", no_argument, 0, OPTION_BACKING_CHAIN}, |
c054b3fd BC |
1946 | {0, 0, 0, 0} |
1947 | }; | |
1948 | c = getopt_long(argc, argv, "f:h", | |
1949 | long_options, &option_index); | |
b8fb60da | 1950 | if (c == -1) { |
ea2384d3 | 1951 | break; |
b8fb60da | 1952 | } |
ea2384d3 | 1953 | switch(c) { |
ef87394c | 1954 | case '?': |
ea2384d3 FB |
1955 | case 'h': |
1956 | help(); | |
1957 | break; | |
1958 | case 'f': | |
1959 | fmt = optarg; | |
1960 | break; | |
c054b3fd BC |
1961 | case OPTION_OUTPUT: |
1962 | output = optarg; | |
1963 | break; | |
9699bf0d SH |
1964 | case OPTION_BACKING_CHAIN: |
1965 | chain = true; | |
1966 | break; | |
ea2384d3 FB |
1967 | } |
1968 | } | |
fc11eb26 | 1969 | if (optind != argc - 1) { |
ac1307ab | 1970 | error_exit("Expecting one image file name"); |
b8fb60da | 1971 | } |
ea2384d3 FB |
1972 | filename = argv[optind++]; |
1973 | ||
c054b3fd BC |
1974 | if (output && !strcmp(output, "json")) { |
1975 | output_format = OFORMAT_JSON; | |
1976 | } else if (output && !strcmp(output, "human")) { | |
1977 | output_format = OFORMAT_HUMAN; | |
1978 | } else if (output) { | |
1979 | error_report("--output must be used with human or json as argument."); | |
c2abccec MK |
1980 | return 1; |
1981 | } | |
c054b3fd | 1982 | |
9699bf0d SH |
1983 | list = collect_image_info_list(filename, fmt, chain); |
1984 | if (!list) { | |
c2abccec | 1985 | return 1; |
faea38e7 | 1986 | } |
c054b3fd | 1987 | |
c054b3fd BC |
1988 | switch (output_format) { |
1989 | case OFORMAT_HUMAN: | |
9699bf0d | 1990 | dump_human_image_info_list(list); |
c054b3fd BC |
1991 | break; |
1992 | case OFORMAT_JSON: | |
9699bf0d SH |
1993 | if (chain) { |
1994 | dump_json_image_info_list(list); | |
1995 | } else { | |
1996 | dump_json_image_info(list->value); | |
1997 | } | |
c054b3fd | 1998 | break; |
faea38e7 | 1999 | } |
c054b3fd | 2000 | |
9699bf0d | 2001 | qapi_free_ImageInfoList(list); |
ea2384d3 FB |
2002 | return 0; |
2003 | } | |
2004 | ||
4c93a13b PB |
2005 | |
2006 | typedef struct MapEntry { | |
2007 | int flags; | |
2008 | int depth; | |
2009 | int64_t start; | |
2010 | int64_t length; | |
2011 | int64_t offset; | |
2012 | BlockDriverState *bs; | |
2013 | } MapEntry; | |
2014 | ||
2015 | static void dump_map_entry(OutputFormat output_format, MapEntry *e, | |
2016 | MapEntry *next) | |
2017 | { | |
2018 | switch (output_format) { | |
2019 | case OFORMAT_HUMAN: | |
2020 | if ((e->flags & BDRV_BLOCK_DATA) && | |
2021 | !(e->flags & BDRV_BLOCK_OFFSET_VALID)) { | |
2022 | error_report("File contains external, encrypted or compressed clusters."); | |
2023 | exit(1); | |
2024 | } | |
2025 | if ((e->flags & (BDRV_BLOCK_DATA|BDRV_BLOCK_ZERO)) == BDRV_BLOCK_DATA) { | |
2026 | printf("%#-16"PRIx64"%#-16"PRIx64"%#-16"PRIx64"%s\n", | |
2027 | e->start, e->length, e->offset, e->bs->filename); | |
2028 | } | |
2029 | /* This format ignores the distinction between 0, ZERO and ZERO|DATA. | |
2030 | * Modify the flags here to allow more coalescing. | |
2031 | */ | |
2032 | if (next && | |
2033 | (next->flags & (BDRV_BLOCK_DATA|BDRV_BLOCK_ZERO)) != BDRV_BLOCK_DATA) { | |
2034 | next->flags &= ~BDRV_BLOCK_DATA; | |
2035 | next->flags |= BDRV_BLOCK_ZERO; | |
2036 | } | |
2037 | break; | |
2038 | case OFORMAT_JSON: | |
2039 | printf("%s{ \"start\": %"PRId64", \"length\": %"PRId64", \"depth\": %d," | |
2040 | " \"zero\": %s, \"data\": %s", | |
2041 | (e->start == 0 ? "[" : ",\n"), | |
2042 | e->start, e->length, e->depth, | |
2043 | (e->flags & BDRV_BLOCK_ZERO) ? "true" : "false", | |
2044 | (e->flags & BDRV_BLOCK_DATA) ? "true" : "false"); | |
2045 | if (e->flags & BDRV_BLOCK_OFFSET_VALID) { | |
c745bfb4 | 2046 | printf(", \"offset\": %"PRId64"", e->offset); |
4c93a13b PB |
2047 | } |
2048 | putchar('}'); | |
2049 | ||
2050 | if (!next) { | |
2051 | printf("]\n"); | |
2052 | } | |
2053 | break; | |
2054 | } | |
2055 | } | |
2056 | ||
2057 | static int get_block_status(BlockDriverState *bs, int64_t sector_num, | |
2058 | int nb_sectors, MapEntry *e) | |
2059 | { | |
2060 | int64_t ret; | |
2061 | int depth; | |
2062 | ||
2063 | /* As an optimization, we could cache the current range of unallocated | |
2064 | * clusters in each file of the chain, and avoid querying the same | |
2065 | * range repeatedly. | |
2066 | */ | |
2067 | ||
2068 | depth = 0; | |
2069 | for (;;) { | |
2070 | ret = bdrv_get_block_status(bs, sector_num, nb_sectors, &nb_sectors); | |
2071 | if (ret < 0) { | |
2072 | return ret; | |
2073 | } | |
2074 | assert(nb_sectors); | |
2075 | if (ret & (BDRV_BLOCK_ZERO|BDRV_BLOCK_DATA)) { | |
2076 | break; | |
2077 | } | |
2078 | bs = bs->backing_hd; | |
2079 | if (bs == NULL) { | |
2080 | ret = 0; | |
2081 | break; | |
2082 | } | |
2083 | ||
2084 | depth++; | |
2085 | } | |
2086 | ||
2087 | e->start = sector_num * BDRV_SECTOR_SIZE; | |
2088 | e->length = nb_sectors * BDRV_SECTOR_SIZE; | |
2089 | e->flags = ret & ~BDRV_BLOCK_OFFSET_MASK; | |
2090 | e->offset = ret & BDRV_BLOCK_OFFSET_MASK; | |
2091 | e->depth = depth; | |
2092 | e->bs = bs; | |
2093 | return 0; | |
2094 | } | |
2095 | ||
2096 | static int img_map(int argc, char **argv) | |
2097 | { | |
2098 | int c; | |
2099 | OutputFormat output_format = OFORMAT_HUMAN; | |
26f54e9a | 2100 | BlockBackend *blk; |
4c93a13b PB |
2101 | BlockDriverState *bs; |
2102 | const char *filename, *fmt, *output; | |
2103 | int64_t length; | |
2104 | MapEntry curr = { .length = 0 }, next; | |
2105 | int ret = 0; | |
2106 | ||
2107 | fmt = NULL; | |
2108 | output = NULL; | |
2109 | for (;;) { | |
2110 | int option_index = 0; | |
2111 | static const struct option long_options[] = { | |
2112 | {"help", no_argument, 0, 'h'}, | |
2113 | {"format", required_argument, 0, 'f'}, | |
2114 | {"output", required_argument, 0, OPTION_OUTPUT}, | |
2115 | {0, 0, 0, 0} | |
2116 | }; | |
2117 | c = getopt_long(argc, argv, "f:h", | |
2118 | long_options, &option_index); | |
2119 | if (c == -1) { | |
2120 | break; | |
2121 | } | |
2122 | switch (c) { | |
2123 | case '?': | |
2124 | case 'h': | |
2125 | help(); | |
2126 | break; | |
2127 | case 'f': | |
2128 | fmt = optarg; | |
2129 | break; | |
2130 | case OPTION_OUTPUT: | |
2131 | output = optarg; | |
2132 | break; | |
2133 | } | |
2134 | } | |
ac1307ab FZ |
2135 | if (optind != argc - 1) { |
2136 | error_exit("Expecting one image file name"); | |
4c93a13b | 2137 | } |
ac1307ab | 2138 | filename = argv[optind]; |
4c93a13b PB |
2139 | |
2140 | if (output && !strcmp(output, "json")) { | |
2141 | output_format = OFORMAT_JSON; | |
2142 | } else if (output && !strcmp(output, "human")) { | |
2143 | output_format = OFORMAT_HUMAN; | |
2144 | } else if (output) { | |
2145 | error_report("--output must be used with human or json as argument."); | |
2146 | return 1; | |
2147 | } | |
2148 | ||
7e7d56d9 MA |
2149 | blk = img_open("image", filename, fmt, BDRV_O_FLAGS, true, false); |
2150 | if (!blk) { | |
2151 | return 1; | |
4c93a13b | 2152 | } |
7e7d56d9 | 2153 | bs = blk_bs(blk); |
4c93a13b PB |
2154 | |
2155 | if (output_format == OFORMAT_HUMAN) { | |
2156 | printf("%-16s%-16s%-16s%s\n", "Offset", "Length", "Mapped to", "File"); | |
2157 | } | |
2158 | ||
2159 | length = bdrv_getlength(bs); | |
2160 | while (curr.start + curr.length < length) { | |
2161 | int64_t nsectors_left; | |
2162 | int64_t sector_num; | |
2163 | int n; | |
2164 | ||
2165 | sector_num = (curr.start + curr.length) >> BDRV_SECTOR_BITS; | |
2166 | ||
2167 | /* Probe up to 1 GiB at a time. */ | |
2168 | nsectors_left = DIV_ROUND_UP(length, BDRV_SECTOR_SIZE) - sector_num; | |
2169 | n = MIN(1 << (30 - BDRV_SECTOR_BITS), nsectors_left); | |
2170 | ret = get_block_status(bs, sector_num, n, &next); | |
2171 | ||
2172 | if (ret < 0) { | |
2173 | error_report("Could not read file metadata: %s", strerror(-ret)); | |
2174 | goto out; | |
2175 | } | |
2176 | ||
2177 | if (curr.length != 0 && curr.flags == next.flags && | |
2178 | curr.depth == next.depth && | |
2179 | ((curr.flags & BDRV_BLOCK_OFFSET_VALID) == 0 || | |
2180 | curr.offset + curr.length == next.offset)) { | |
2181 | curr.length += next.length; | |
2182 | continue; | |
2183 | } | |
2184 | ||
2185 | if (curr.length > 0) { | |
2186 | dump_map_entry(output_format, &curr, &next); | |
2187 | } | |
2188 | curr = next; | |
2189 | } | |
2190 | ||
2191 | dump_map_entry(output_format, &curr, NULL); | |
2192 | ||
2193 | out: | |
26f54e9a | 2194 | blk_unref(blk); |
4c93a13b PB |
2195 | return ret < 0; |
2196 | } | |
2197 | ||
f7b4a940 AL |
2198 | #define SNAPSHOT_LIST 1 |
2199 | #define SNAPSHOT_CREATE 2 | |
2200 | #define SNAPSHOT_APPLY 3 | |
2201 | #define SNAPSHOT_DELETE 4 | |
2202 | ||
153859be | 2203 | static int img_snapshot(int argc, char **argv) |
f7b4a940 | 2204 | { |
26f54e9a | 2205 | BlockBackend *blk; |
f7b4a940 AL |
2206 | BlockDriverState *bs; |
2207 | QEMUSnapshotInfo sn; | |
2208 | char *filename, *snapshot_name = NULL; | |
c2abccec | 2209 | int c, ret = 0, bdrv_oflags; |
f7b4a940 AL |
2210 | int action = 0; |
2211 | qemu_timeval tv; | |
f382d43a | 2212 | bool quiet = false; |
a89d89d3 | 2213 | Error *err = NULL; |
f7b4a940 | 2214 | |
710da702 | 2215 | bdrv_oflags = BDRV_O_FLAGS | BDRV_O_RDWR; |
f7b4a940 AL |
2216 | /* Parse commandline parameters */ |
2217 | for(;;) { | |
f382d43a | 2218 | c = getopt(argc, argv, "la:c:d:hq"); |
b8fb60da | 2219 | if (c == -1) { |
f7b4a940 | 2220 | break; |
b8fb60da | 2221 | } |
f7b4a940 | 2222 | switch(c) { |
ef87394c | 2223 | case '?': |
f7b4a940 AL |
2224 | case 'h': |
2225 | help(); | |
153859be | 2226 | return 0; |
f7b4a940 AL |
2227 | case 'l': |
2228 | if (action) { | |
ac1307ab | 2229 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2230 | return 0; |
f7b4a940 AL |
2231 | } |
2232 | action = SNAPSHOT_LIST; | |
f5edb014 | 2233 | bdrv_oflags &= ~BDRV_O_RDWR; /* no need for RW */ |
f7b4a940 AL |
2234 | break; |
2235 | case 'a': | |
2236 | if (action) { | |
ac1307ab | 2237 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2238 | return 0; |
f7b4a940 AL |
2239 | } |
2240 | action = SNAPSHOT_APPLY; | |
2241 | snapshot_name = optarg; | |
2242 | break; | |
2243 | case 'c': | |
2244 | if (action) { | |
ac1307ab | 2245 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2246 | return 0; |
f7b4a940 AL |
2247 | } |
2248 | action = SNAPSHOT_CREATE; | |
2249 | snapshot_name = optarg; | |
2250 | break; | |
2251 | case 'd': | |
2252 | if (action) { | |
ac1307ab | 2253 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2254 | return 0; |
f7b4a940 AL |
2255 | } |
2256 | action = SNAPSHOT_DELETE; | |
2257 | snapshot_name = optarg; | |
2258 | break; | |
f382d43a MR |
2259 | case 'q': |
2260 | quiet = true; | |
2261 | break; | |
f7b4a940 AL |
2262 | } |
2263 | } | |
2264 | ||
fc11eb26 | 2265 | if (optind != argc - 1) { |
ac1307ab | 2266 | error_exit("Expecting one image file name"); |
b8fb60da | 2267 | } |
f7b4a940 AL |
2268 | filename = argv[optind++]; |
2269 | ||
2270 | /* Open the image */ | |
7e7d56d9 MA |
2271 | blk = img_open("image", filename, NULL, bdrv_oflags, true, quiet); |
2272 | if (!blk) { | |
2273 | return 1; | |
c2abccec | 2274 | } |
7e7d56d9 | 2275 | bs = blk_bs(blk); |
f7b4a940 AL |
2276 | |
2277 | /* Perform the requested action */ | |
2278 | switch(action) { | |
2279 | case SNAPSHOT_LIST: | |
2280 | dump_snapshots(bs); | |
2281 | break; | |
2282 | ||
2283 | case SNAPSHOT_CREATE: | |
2284 | memset(&sn, 0, sizeof(sn)); | |
2285 | pstrcpy(sn.name, sizeof(sn.name), snapshot_name); | |
2286 | ||
2287 | qemu_gettimeofday(&tv); | |
2288 | sn.date_sec = tv.tv_sec; | |
2289 | sn.date_nsec = tv.tv_usec * 1000; | |
2290 | ||
2291 | ret = bdrv_snapshot_create(bs, &sn); | |
b8fb60da | 2292 | if (ret) { |
15654a6d | 2293 | error_report("Could not create snapshot '%s': %d (%s)", |
f7b4a940 | 2294 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 2295 | } |
f7b4a940 AL |
2296 | break; |
2297 | ||
2298 | case SNAPSHOT_APPLY: | |
2299 | ret = bdrv_snapshot_goto(bs, snapshot_name); | |
b8fb60da | 2300 | if (ret) { |
15654a6d | 2301 | error_report("Could not apply snapshot '%s': %d (%s)", |
f7b4a940 | 2302 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 2303 | } |
f7b4a940 AL |
2304 | break; |
2305 | ||
2306 | case SNAPSHOT_DELETE: | |
a89d89d3 | 2307 | bdrv_snapshot_delete_by_id_or_name(bs, snapshot_name, &err); |
84d18f06 | 2308 | if (err) { |
a89d89d3 WX |
2309 | error_report("Could not delete snapshot '%s': (%s)", |
2310 | snapshot_name, error_get_pretty(err)); | |
2311 | error_free(err); | |
2312 | ret = 1; | |
b8fb60da | 2313 | } |
f7b4a940 AL |
2314 | break; |
2315 | } | |
2316 | ||
2317 | /* Cleanup */ | |
26f54e9a | 2318 | blk_unref(blk); |
c2abccec MK |
2319 | if (ret) { |
2320 | return 1; | |
2321 | } | |
153859be | 2322 | return 0; |
f7b4a940 AL |
2323 | } |
2324 | ||
3e85c6fd KW |
2325 | static int img_rebase(int argc, char **argv) |
2326 | { | |
26f54e9a | 2327 | BlockBackend *blk = NULL, *blk_old_backing = NULL, *blk_new_backing = NULL; |
40ed35a3 | 2328 | BlockDriverState *bs = NULL, *bs_old_backing = NULL, *bs_new_backing = NULL; |
f163d073 | 2329 | BlockDriver *old_backing_drv, *new_backing_drv; |
3e85c6fd | 2330 | char *filename; |
40055951 HR |
2331 | const char *fmt, *cache, *src_cache, *out_basefmt, *out_baseimg; |
2332 | int c, flags, src_flags, ret; | |
3e85c6fd | 2333 | int unsafe = 0; |
6b837bc4 | 2334 | int progress = 0; |
f382d43a | 2335 | bool quiet = false; |
34b5d2c6 | 2336 | Error *local_err = NULL; |
3e85c6fd KW |
2337 | |
2338 | /* Parse commandline parameters */ | |
e53dbee0 | 2339 | fmt = NULL; |
661a0f71 | 2340 | cache = BDRV_DEFAULT_CACHE; |
40055951 | 2341 | src_cache = BDRV_DEFAULT_CACHE; |
3e85c6fd KW |
2342 | out_baseimg = NULL; |
2343 | out_basefmt = NULL; | |
3e85c6fd | 2344 | for(;;) { |
40055951 | 2345 | c = getopt(argc, argv, "hf:F:b:upt:T:q"); |
b8fb60da | 2346 | if (c == -1) { |
3e85c6fd | 2347 | break; |
b8fb60da | 2348 | } |
3e85c6fd | 2349 | switch(c) { |
ef87394c | 2350 | case '?': |
3e85c6fd KW |
2351 | case 'h': |
2352 | help(); | |
2353 | return 0; | |
e53dbee0 KW |
2354 | case 'f': |
2355 | fmt = optarg; | |
2356 | break; | |
3e85c6fd KW |
2357 | case 'F': |
2358 | out_basefmt = optarg; | |
2359 | break; | |
2360 | case 'b': | |
2361 | out_baseimg = optarg; | |
2362 | break; | |
2363 | case 'u': | |
2364 | unsafe = 1; | |
2365 | break; | |
6b837bc4 JS |
2366 | case 'p': |
2367 | progress = 1; | |
2368 | break; | |
661a0f71 FS |
2369 | case 't': |
2370 | cache = optarg; | |
2371 | break; | |
40055951 HR |
2372 | case 'T': |
2373 | src_cache = optarg; | |
2374 | break; | |
f382d43a MR |
2375 | case 'q': |
2376 | quiet = true; | |
2377 | break; | |
3e85c6fd KW |
2378 | } |
2379 | } | |
2380 | ||
f382d43a MR |
2381 | if (quiet) { |
2382 | progress = 0; | |
2383 | } | |
2384 | ||
ac1307ab FZ |
2385 | if (optind != argc - 1) { |
2386 | error_exit("Expecting one image file name"); | |
2387 | } | |
2388 | if (!unsafe && !out_baseimg) { | |
2389 | error_exit("Must specify backing file (-b) or use unsafe mode (-u)"); | |
b8fb60da | 2390 | } |
3e85c6fd KW |
2391 | filename = argv[optind++]; |
2392 | ||
6b837bc4 JS |
2393 | qemu_progress_init(progress, 2.0); |
2394 | qemu_progress_print(0, 100); | |
2395 | ||
661a0f71 | 2396 | flags = BDRV_O_RDWR | (unsafe ? BDRV_O_NO_BACKING : 0); |
c3993cdc | 2397 | ret = bdrv_parse_cache_flags(cache, &flags); |
661a0f71 FS |
2398 | if (ret < 0) { |
2399 | error_report("Invalid cache option: %s", cache); | |
40ed35a3 | 2400 | goto out; |
661a0f71 FS |
2401 | } |
2402 | ||
40055951 HR |
2403 | src_flags = BDRV_O_FLAGS; |
2404 | ret = bdrv_parse_cache_flags(src_cache, &src_flags); | |
2405 | if (ret < 0) { | |
2406 | error_report("Invalid source cache option: %s", src_cache); | |
40ed35a3 | 2407 | goto out; |
40055951 HR |
2408 | } |
2409 | ||
3e85c6fd KW |
2410 | /* |
2411 | * Open the images. | |
2412 | * | |
2413 | * Ignore the old backing file for unsafe rebase in case we want to correct | |
2414 | * the reference to a renamed or moved backing file. | |
2415 | */ | |
7e7d56d9 MA |
2416 | blk = img_open("image", filename, fmt, flags, true, quiet); |
2417 | if (!blk) { | |
40ed35a3 SH |
2418 | ret = -1; |
2419 | goto out; | |
c2abccec | 2420 | } |
7e7d56d9 | 2421 | bs = blk_bs(blk); |
3e85c6fd KW |
2422 | |
2423 | /* Find the right drivers for the backing files */ | |
2424 | old_backing_drv = NULL; | |
2425 | new_backing_drv = NULL; | |
2426 | ||
2427 | if (!unsafe && bs->backing_format[0] != '\0') { | |
2428 | old_backing_drv = bdrv_find_format(bs->backing_format); | |
2429 | if (old_backing_drv == NULL) { | |
15654a6d | 2430 | error_report("Invalid format name: '%s'", bs->backing_format); |
c2abccec MK |
2431 | ret = -1; |
2432 | goto out; | |
3e85c6fd KW |
2433 | } |
2434 | } | |
2435 | ||
2436 | if (out_basefmt != NULL) { | |
2437 | new_backing_drv = bdrv_find_format(out_basefmt); | |
2438 | if (new_backing_drv == NULL) { | |
15654a6d | 2439 | error_report("Invalid format name: '%s'", out_basefmt); |
c2abccec MK |
2440 | ret = -1; |
2441 | goto out; | |
3e85c6fd KW |
2442 | } |
2443 | } | |
2444 | ||
2445 | /* For safe rebasing we need to compare old and new backing file */ | |
40ed35a3 | 2446 | if (!unsafe) { |
3e85c6fd KW |
2447 | char backing_name[1024]; |
2448 | ||
7e7d56d9 MA |
2449 | blk_old_backing = blk_new_with_bs("old_backing", &error_abort); |
2450 | bs_old_backing = blk_bs(blk_old_backing); | |
3e85c6fd | 2451 | bdrv_get_backing_filename(bs, backing_name, sizeof(backing_name)); |
40055951 | 2452 | ret = bdrv_open(&bs_old_backing, backing_name, NULL, NULL, src_flags, |
34b5d2c6 | 2453 | old_backing_drv, &local_err); |
c2abccec | 2454 | if (ret) { |
34b5d2c6 HR |
2455 | error_report("Could not open old backing file '%s': %s", |
2456 | backing_name, error_get_pretty(local_err)); | |
2457 | error_free(local_err); | |
c2abccec | 2458 | goto out; |
3e85c6fd | 2459 | } |
a616673d | 2460 | if (out_baseimg[0]) { |
7e7d56d9 MA |
2461 | blk_new_backing = blk_new_with_bs("new_backing", &error_abort); |
2462 | bs_new_backing = blk_bs(blk_new_backing); | |
40055951 HR |
2463 | ret = bdrv_open(&bs_new_backing, out_baseimg, NULL, NULL, src_flags, |
2464 | new_backing_drv, &local_err); | |
a616673d | 2465 | if (ret) { |
34b5d2c6 HR |
2466 | error_report("Could not open new backing file '%s': %s", |
2467 | out_baseimg, error_get_pretty(local_err)); | |
2468 | error_free(local_err); | |
a616673d AB |
2469 | goto out; |
2470 | } | |
3e85c6fd KW |
2471 | } |
2472 | } | |
2473 | ||
2474 | /* | |
2475 | * Check each unallocated cluster in the COW file. If it is unallocated, | |
2476 | * accesses go to the backing file. We must therefore compare this cluster | |
2477 | * in the old and new backing file, and if they differ we need to copy it | |
2478 | * from the old backing file into the COW file. | |
2479 | * | |
2480 | * If qemu-img crashes during this step, no harm is done. The content of | |
2481 | * the image is the same as the original one at any time. | |
2482 | */ | |
2483 | if (!unsafe) { | |
52bf1e72 MA |
2484 | int64_t num_sectors; |
2485 | int64_t old_backing_num_sectors; | |
2486 | int64_t new_backing_num_sectors = 0; | |
3e85c6fd | 2487 | uint64_t sector; |
cc60e327 | 2488 | int n; |
d6771bfa T |
2489 | uint8_t * buf_old; |
2490 | uint8_t * buf_new; | |
1f710495 | 2491 | float local_progress = 0; |
d6771bfa | 2492 | |
bb1c0597 KW |
2493 | buf_old = qemu_blockalign(bs, IO_BUF_SIZE); |
2494 | buf_new = qemu_blockalign(bs, IO_BUF_SIZE); | |
3e85c6fd | 2495 | |
52bf1e72 MA |
2496 | num_sectors = bdrv_nb_sectors(bs); |
2497 | if (num_sectors < 0) { | |
2498 | error_report("Could not get size of '%s': %s", | |
2499 | filename, strerror(-num_sectors)); | |
2500 | ret = -1; | |
2501 | goto out; | |
2502 | } | |
2503 | old_backing_num_sectors = bdrv_nb_sectors(bs_old_backing); | |
2504 | if (old_backing_num_sectors < 0) { | |
2505 | char backing_name[1024]; | |
2506 | ||
2507 | bdrv_get_backing_filename(bs, backing_name, sizeof(backing_name)); | |
2508 | error_report("Could not get size of '%s': %s", | |
2509 | backing_name, strerror(-old_backing_num_sectors)); | |
2510 | ret = -1; | |
2511 | goto out; | |
2512 | } | |
a616673d | 2513 | if (bs_new_backing) { |
52bf1e72 MA |
2514 | new_backing_num_sectors = bdrv_nb_sectors(bs_new_backing); |
2515 | if (new_backing_num_sectors < 0) { | |
2516 | error_report("Could not get size of '%s': %s", | |
2517 | out_baseimg, strerror(-new_backing_num_sectors)); | |
2518 | ret = -1; | |
2519 | goto out; | |
2520 | } | |
a616673d | 2521 | } |
3e85c6fd | 2522 | |
1f710495 KW |
2523 | if (num_sectors != 0) { |
2524 | local_progress = (float)100 / | |
2525 | (num_sectors / MIN(num_sectors, IO_BUF_SIZE / 512)); | |
2526 | } | |
2527 | ||
3e85c6fd KW |
2528 | for (sector = 0; sector < num_sectors; sector += n) { |
2529 | ||
2530 | /* How many sectors can we handle with the next read? */ | |
2531 | if (sector + (IO_BUF_SIZE / 512) <= num_sectors) { | |
2532 | n = (IO_BUF_SIZE / 512); | |
2533 | } else { | |
2534 | n = num_sectors - sector; | |
2535 | } | |
2536 | ||
2537 | /* If the cluster is allocated, we don't need to take action */ | |
cc60e327 | 2538 | ret = bdrv_is_allocated(bs, sector, n, &n); |
d663640c PB |
2539 | if (ret < 0) { |
2540 | error_report("error while reading image metadata: %s", | |
2541 | strerror(-ret)); | |
2542 | goto out; | |
2543 | } | |
cc60e327 | 2544 | if (ret) { |
3e85c6fd KW |
2545 | continue; |
2546 | } | |
2547 | ||
87a1b3e3 KW |
2548 | /* |
2549 | * Read old and new backing file and take into consideration that | |
2550 | * backing files may be smaller than the COW image. | |
2551 | */ | |
2552 | if (sector >= old_backing_num_sectors) { | |
2553 | memset(buf_old, 0, n * BDRV_SECTOR_SIZE); | |
2554 | } else { | |
2555 | if (sector + n > old_backing_num_sectors) { | |
2556 | n = old_backing_num_sectors - sector; | |
2557 | } | |
2558 | ||
2559 | ret = bdrv_read(bs_old_backing, sector, buf_old, n); | |
2560 | if (ret < 0) { | |
2561 | error_report("error while reading from old backing file"); | |
2562 | goto out; | |
2563 | } | |
3e85c6fd | 2564 | } |
87a1b3e3 | 2565 | |
a616673d | 2566 | if (sector >= new_backing_num_sectors || !bs_new_backing) { |
87a1b3e3 KW |
2567 | memset(buf_new, 0, n * BDRV_SECTOR_SIZE); |
2568 | } else { | |
2569 | if (sector + n > new_backing_num_sectors) { | |
2570 | n = new_backing_num_sectors - sector; | |
2571 | } | |
2572 | ||
2573 | ret = bdrv_read(bs_new_backing, sector, buf_new, n); | |
2574 | if (ret < 0) { | |
2575 | error_report("error while reading from new backing file"); | |
2576 | goto out; | |
2577 | } | |
3e85c6fd KW |
2578 | } |
2579 | ||
2580 | /* If they differ, we need to write to the COW file */ | |
2581 | uint64_t written = 0; | |
2582 | ||
2583 | while (written < n) { | |
2584 | int pnum; | |
2585 | ||
2586 | if (compare_sectors(buf_old + written * 512, | |
60b1bd4f | 2587 | buf_new + written * 512, n - written, &pnum)) |
3e85c6fd KW |
2588 | { |
2589 | ret = bdrv_write(bs, sector + written, | |
2590 | buf_old + written * 512, pnum); | |
2591 | if (ret < 0) { | |
15654a6d | 2592 | error_report("Error while writing to COW image: %s", |
3e85c6fd | 2593 | strerror(-ret)); |
c2abccec | 2594 | goto out; |
3e85c6fd KW |
2595 | } |
2596 | } | |
2597 | ||
2598 | written += pnum; | |
2599 | } | |
6b837bc4 | 2600 | qemu_progress_print(local_progress, 100); |
3e85c6fd | 2601 | } |
d6771bfa | 2602 | |
bb1c0597 KW |
2603 | qemu_vfree(buf_old); |
2604 | qemu_vfree(buf_new); | |
3e85c6fd KW |
2605 | } |
2606 | ||
2607 | /* | |
2608 | * Change the backing file. All clusters that are different from the old | |
2609 | * backing file are overwritten in the COW file now, so the visible content | |
2610 | * doesn't change when we switch the backing file. | |
2611 | */ | |
a616673d AB |
2612 | if (out_baseimg && *out_baseimg) { |
2613 | ret = bdrv_change_backing_file(bs, out_baseimg, out_basefmt); | |
2614 | } else { | |
2615 | ret = bdrv_change_backing_file(bs, NULL, NULL); | |
2616 | } | |
2617 | ||
3e85c6fd | 2618 | if (ret == -ENOSPC) { |
15654a6d JS |
2619 | error_report("Could not change the backing file to '%s': No " |
2620 | "space left in the file header", out_baseimg); | |
3e85c6fd | 2621 | } else if (ret < 0) { |
15654a6d | 2622 | error_report("Could not change the backing file to '%s': %s", |
3e85c6fd KW |
2623 | out_baseimg, strerror(-ret)); |
2624 | } | |
2625 | ||
6b837bc4 | 2626 | qemu_progress_print(100, 0); |
3e85c6fd KW |
2627 | /* |
2628 | * TODO At this point it is possible to check if any clusters that are | |
2629 | * allocated in the COW file are the same in the backing file. If so, they | |
2630 | * could be dropped from the COW file. Don't do this before switching the | |
2631 | * backing file, in case of a crash this would lead to corruption. | |
2632 | */ | |
c2abccec | 2633 | out: |
6b837bc4 | 2634 | qemu_progress_end(); |
3e85c6fd KW |
2635 | /* Cleanup */ |
2636 | if (!unsafe) { | |
26f54e9a | 2637 | blk_unref(blk_old_backing); |
26f54e9a | 2638 | blk_unref(blk_new_backing); |
3e85c6fd KW |
2639 | } |
2640 | ||
26f54e9a | 2641 | blk_unref(blk); |
c2abccec MK |
2642 | if (ret) { |
2643 | return 1; | |
2644 | } | |
3e85c6fd KW |
2645 | return 0; |
2646 | } | |
2647 | ||
ae6b0ed6 SH |
2648 | static int img_resize(int argc, char **argv) |
2649 | { | |
2650 | int c, ret, relative; | |
2651 | const char *filename, *fmt, *size; | |
2652 | int64_t n, total_size; | |
f382d43a | 2653 | bool quiet = false; |
26f54e9a | 2654 | BlockBackend *blk = NULL; |
2a81998a | 2655 | BlockDriverState *bs = NULL; |
20caf0f7 DXW |
2656 | QemuOpts *param; |
2657 | static QemuOptsList resize_options = { | |
2658 | .name = "resize_options", | |
2659 | .head = QTAILQ_HEAD_INITIALIZER(resize_options.head), | |
2660 | .desc = { | |
2661 | { | |
2662 | .name = BLOCK_OPT_SIZE, | |
2663 | .type = QEMU_OPT_SIZE, | |
2664 | .help = "Virtual disk size" | |
2665 | }, { | |
2666 | /* end of list */ | |
2667 | } | |
ae6b0ed6 | 2668 | }, |
ae6b0ed6 SH |
2669 | }; |
2670 | ||
e80fec7f KW |
2671 | /* Remove size from argv manually so that negative numbers are not treated |
2672 | * as options by getopt. */ | |
2673 | if (argc < 3) { | |
ac1307ab | 2674 | error_exit("Not enough arguments"); |
e80fec7f KW |
2675 | return 1; |
2676 | } | |
2677 | ||
2678 | size = argv[--argc]; | |
2679 | ||
2680 | /* Parse getopt arguments */ | |
ae6b0ed6 SH |
2681 | fmt = NULL; |
2682 | for(;;) { | |
f382d43a | 2683 | c = getopt(argc, argv, "f:hq"); |
ae6b0ed6 SH |
2684 | if (c == -1) { |
2685 | break; | |
2686 | } | |
2687 | switch(c) { | |
ef87394c | 2688 | case '?': |
ae6b0ed6 SH |
2689 | case 'h': |
2690 | help(); | |
2691 | break; | |
2692 | case 'f': | |
2693 | fmt = optarg; | |
2694 | break; | |
f382d43a MR |
2695 | case 'q': |
2696 | quiet = true; | |
2697 | break; | |
ae6b0ed6 SH |
2698 | } |
2699 | } | |
fc11eb26 | 2700 | if (optind != argc - 1) { |
ac1307ab | 2701 | error_exit("Expecting one image file name"); |
ae6b0ed6 SH |
2702 | } |
2703 | filename = argv[optind++]; | |
ae6b0ed6 SH |
2704 | |
2705 | /* Choose grow, shrink, or absolute resize mode */ | |
2706 | switch (size[0]) { | |
2707 | case '+': | |
2708 | relative = 1; | |
2709 | size++; | |
2710 | break; | |
2711 | case '-': | |
2712 | relative = -1; | |
2713 | size++; | |
2714 | break; | |
2715 | default: | |
2716 | relative = 0; | |
2717 | break; | |
2718 | } | |
2719 | ||
2720 | /* Parse size */ | |
87ea75d5 | 2721 | param = qemu_opts_create(&resize_options, NULL, 0, &error_abort); |
20caf0f7 | 2722 | if (qemu_opt_set(param, BLOCK_OPT_SIZE, size)) { |
ae6b0ed6 | 2723 | /* Error message already printed when size parsing fails */ |
2a81998a | 2724 | ret = -1; |
20caf0f7 | 2725 | qemu_opts_del(param); |
2a81998a | 2726 | goto out; |
ae6b0ed6 | 2727 | } |
20caf0f7 DXW |
2728 | n = qemu_opt_get_size(param, BLOCK_OPT_SIZE, 0); |
2729 | qemu_opts_del(param); | |
ae6b0ed6 | 2730 | |
7e7d56d9 MA |
2731 | blk = img_open("image", filename, fmt, BDRV_O_FLAGS | BDRV_O_RDWR, |
2732 | true, quiet); | |
2733 | if (!blk) { | |
2a81998a JS |
2734 | ret = -1; |
2735 | goto out; | |
c2abccec | 2736 | } |
7e7d56d9 | 2737 | bs = blk_bs(blk); |
ae6b0ed6 SH |
2738 | |
2739 | if (relative) { | |
2740 | total_size = bdrv_getlength(bs) + n * relative; | |
2741 | } else { | |
2742 | total_size = n; | |
2743 | } | |
2744 | if (total_size <= 0) { | |
15654a6d | 2745 | error_report("New image size must be positive"); |
c2abccec MK |
2746 | ret = -1; |
2747 | goto out; | |
ae6b0ed6 SH |
2748 | } |
2749 | ||
2750 | ret = bdrv_truncate(bs, total_size); | |
2751 | switch (ret) { | |
2752 | case 0: | |
f382d43a | 2753 | qprintf(quiet, "Image resized.\n"); |
ae6b0ed6 SH |
2754 | break; |
2755 | case -ENOTSUP: | |
259b2173 | 2756 | error_report("This image does not support resize"); |
ae6b0ed6 SH |
2757 | break; |
2758 | case -EACCES: | |
15654a6d | 2759 | error_report("Image is read-only"); |
ae6b0ed6 SH |
2760 | break; |
2761 | default: | |
15654a6d | 2762 | error_report("Error resizing image (%d)", -ret); |
ae6b0ed6 SH |
2763 | break; |
2764 | } | |
c2abccec | 2765 | out: |
26f54e9a | 2766 | blk_unref(blk); |
c2abccec MK |
2767 | if (ret) { |
2768 | return 1; | |
2769 | } | |
ae6b0ed6 SH |
2770 | return 0; |
2771 | } | |
2772 | ||
6f176b48 HR |
2773 | static int img_amend(int argc, char **argv) |
2774 | { | |
2775 | int c, ret = 0; | |
2776 | char *options = NULL; | |
83d0521a CL |
2777 | QemuOptsList *create_opts = NULL; |
2778 | QemuOpts *opts = NULL; | |
bd39e6ed HR |
2779 | const char *fmt = NULL, *filename, *cache; |
2780 | int flags; | |
6f176b48 | 2781 | bool quiet = false; |
26f54e9a | 2782 | BlockBackend *blk = NULL; |
6f176b48 HR |
2783 | BlockDriverState *bs = NULL; |
2784 | ||
bd39e6ed | 2785 | cache = BDRV_DEFAULT_CACHE; |
6f176b48 | 2786 | for (;;) { |
bd39e6ed | 2787 | c = getopt(argc, argv, "ho:f:t:q"); |
6f176b48 HR |
2788 | if (c == -1) { |
2789 | break; | |
2790 | } | |
2791 | ||
2792 | switch (c) { | |
2793 | case 'h': | |
2794 | case '?': | |
2795 | help(); | |
2796 | break; | |
2797 | case 'o': | |
626f84f3 KW |
2798 | if (!is_valid_option_list(optarg)) { |
2799 | error_report("Invalid option list: %s", optarg); | |
2800 | ret = -1; | |
2801 | goto out; | |
2802 | } | |
2803 | if (!options) { | |
2804 | options = g_strdup(optarg); | |
2805 | } else { | |
2806 | char *old_options = options; | |
2807 | options = g_strdup_printf("%s,%s", options, optarg); | |
2808 | g_free(old_options); | |
2809 | } | |
6f176b48 HR |
2810 | break; |
2811 | case 'f': | |
2812 | fmt = optarg; | |
2813 | break; | |
bd39e6ed HR |
2814 | case 't': |
2815 | cache = optarg; | |
2816 | break; | |
6f176b48 HR |
2817 | case 'q': |
2818 | quiet = true; | |
2819 | break; | |
2820 | } | |
2821 | } | |
2822 | ||
a283cb6e | 2823 | if (!options) { |
ac1307ab | 2824 | error_exit("Must specify options (-o)"); |
6f176b48 HR |
2825 | } |
2826 | ||
a283cb6e KW |
2827 | filename = (optind == argc - 1) ? argv[argc - 1] : NULL; |
2828 | if (fmt && has_help_option(options)) { | |
2829 | /* If a format is explicitly specified (and possibly no filename is | |
2830 | * given), print option help here */ | |
2831 | ret = print_block_option_help(filename, fmt); | |
2832 | goto out; | |
6f176b48 HR |
2833 | } |
2834 | ||
a283cb6e | 2835 | if (optind != argc - 1) { |
ac1307ab | 2836 | error_exit("Expecting one image file name"); |
a283cb6e | 2837 | } |
6f176b48 | 2838 | |
bd39e6ed HR |
2839 | flags = BDRV_O_FLAGS | BDRV_O_RDWR; |
2840 | ret = bdrv_parse_cache_flags(cache, &flags); | |
2841 | if (ret < 0) { | |
2842 | error_report("Invalid cache option: %s", cache); | |
2843 | goto out; | |
2844 | } | |
2845 | ||
7e7d56d9 MA |
2846 | blk = img_open("image", filename, fmt, flags, true, quiet); |
2847 | if (!blk) { | |
6f176b48 HR |
2848 | error_report("Could not open image '%s'", filename); |
2849 | ret = -1; | |
2850 | goto out; | |
2851 | } | |
7e7d56d9 | 2852 | bs = blk_bs(blk); |
6f176b48 HR |
2853 | |
2854 | fmt = bs->drv->format_name; | |
2855 | ||
626f84f3 | 2856 | if (has_help_option(options)) { |
a283cb6e | 2857 | /* If the format was auto-detected, print option help here */ |
6f176b48 HR |
2858 | ret = print_block_option_help(filename, fmt); |
2859 | goto out; | |
2860 | } | |
2861 | ||
c282e1fd | 2862 | create_opts = qemu_opts_append(create_opts, bs->drv->create_opts); |
83d0521a CL |
2863 | opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); |
2864 | if (options && qemu_opts_do_parse(opts, options, NULL)) { | |
6f176b48 HR |
2865 | error_report("Invalid options for file format '%s'", fmt); |
2866 | ret = -1; | |
2867 | goto out; | |
2868 | } | |
2869 | ||
c282e1fd | 2870 | ret = bdrv_amend_options(bs, opts); |
6f176b48 HR |
2871 | if (ret < 0) { |
2872 | error_report("Error while amending options: %s", strerror(-ret)); | |
2873 | goto out; | |
2874 | } | |
2875 | ||
2876 | out: | |
26f54e9a | 2877 | blk_unref(blk); |
83d0521a CL |
2878 | qemu_opts_del(opts); |
2879 | qemu_opts_free(create_opts); | |
626f84f3 KW |
2880 | g_free(options); |
2881 | ||
6f176b48 HR |
2882 | if (ret) { |
2883 | return 1; | |
2884 | } | |
2885 | return 0; | |
2886 | } | |
2887 | ||
c227f099 | 2888 | static const img_cmd_t img_cmds[] = { |
153859be SB |
2889 | #define DEF(option, callback, arg_string) \ |
2890 | { option, callback }, | |
2891 | #include "qemu-img-cmds.h" | |
2892 | #undef DEF | |
2893 | #undef GEN_DOCS | |
2894 | { NULL, NULL, }, | |
2895 | }; | |
2896 | ||
ea2384d3 FB |
2897 | int main(int argc, char **argv) |
2898 | { | |
c227f099 | 2899 | const img_cmd_t *cmd; |
153859be | 2900 | const char *cmdname; |
2f78e491 | 2901 | Error *local_error = NULL; |
7db1689c | 2902 | int c; |
7db1689c JC |
2903 | static const struct option long_options[] = { |
2904 | {"help", no_argument, 0, 'h'}, | |
5f6979cb | 2905 | {"version", no_argument, 0, 'v'}, |
7db1689c JC |
2906 | {0, 0, 0, 0} |
2907 | }; | |
ea2384d3 | 2908 | |
526eda14 MK |
2909 | #ifdef CONFIG_POSIX |
2910 | signal(SIGPIPE, SIG_IGN); | |
2911 | #endif | |
2912 | ||
53f76e58 | 2913 | error_set_progname(argv[0]); |
10f5bff6 | 2914 | qemu_init_exec_dir(argv[0]); |
53f76e58 | 2915 | |
2f78e491 CN |
2916 | if (qemu_init_main_loop(&local_error)) { |
2917 | error_report("%s", error_get_pretty(local_error)); | |
2918 | error_free(local_error); | |
2919 | exit(EXIT_FAILURE); | |
2920 | } | |
2921 | ||
ea2384d3 | 2922 | bdrv_init(); |
ac1307ab FZ |
2923 | if (argc < 2) { |
2924 | error_exit("Not enough arguments"); | |
2925 | } | |
153859be | 2926 | cmdname = argv[1]; |
153859be SB |
2927 | |
2928 | /* find the command */ | |
5f6979cb | 2929 | for (cmd = img_cmds; cmd->name != NULL; cmd++) { |
153859be | 2930 | if (!strcmp(cmdname, cmd->name)) { |
7db1689c | 2931 | return cmd->handler(argc - 1, argv + 1); |
153859be | 2932 | } |
ea2384d3 | 2933 | } |
153859be | 2934 | |
5f6979cb | 2935 | c = getopt_long(argc, argv, "h", long_options, NULL); |
7db1689c JC |
2936 | |
2937 | if (c == 'h') { | |
2938 | help(); | |
2939 | } | |
5f6979cb JC |
2940 | if (c == 'v') { |
2941 | printf(QEMU_IMG_VERSION); | |
2942 | return 0; | |
2943 | } | |
7db1689c | 2944 | |
153859be | 2945 | /* not found */ |
ac1307ab | 2946 | error_exit("Command not found: %s", cmdname); |
ea2384d3 | 2947 | } |