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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" |
d4a3238a | 34 | #include "block/blockjob.h" |
f364ec65 | 35 | #include "block/qapi.h" |
c054b3fd | 36 | #include <getopt.h> |
e8445331 | 37 | |
5f6979cb JC |
38 | #define QEMU_IMG_VERSION "qemu-img version " QEMU_VERSION \ |
39 | ", Copyright (c) 2004-2008 Fabrice Bellard\n" | |
40 | ||
c227f099 | 41 | typedef struct img_cmd_t { |
153859be SB |
42 | const char *name; |
43 | int (*handler)(int argc, char **argv); | |
c227f099 | 44 | } img_cmd_t; |
153859be | 45 | |
8599ea4c FS |
46 | enum { |
47 | OPTION_OUTPUT = 256, | |
48 | OPTION_BACKING_CHAIN = 257, | |
49 | }; | |
50 | ||
51 | typedef enum OutputFormat { | |
52 | OFORMAT_JSON, | |
53 | OFORMAT_HUMAN, | |
54 | } OutputFormat; | |
55 | ||
137519ce | 56 | /* Default to cache=writeback as data integrity is not important for qemu-tcg. */ |
adfe078e | 57 | #define BDRV_O_FLAGS BDRV_O_CACHE_WB |
661a0f71 | 58 | #define BDRV_DEFAULT_CACHE "writeback" |
137519ce | 59 | |
00c6d403 | 60 | static void format_print(void *opaque, const char *name) |
ea2384d3 | 61 | { |
00c6d403 | 62 | printf(" %s", name); |
ea2384d3 FB |
63 | } |
64 | ||
ac1307ab FZ |
65 | static void QEMU_NORETURN GCC_FMT_ATTR(1, 2) error_exit(const char *fmt, ...) |
66 | { | |
67 | va_list ap; | |
68 | ||
69 | error_printf("qemu-img: "); | |
70 | ||
71 | va_start(ap, fmt); | |
72 | error_vprintf(fmt, ap); | |
73 | va_end(ap); | |
74 | ||
75 | error_printf("\nTry 'qemu-img --help' for more information\n"); | |
76 | exit(EXIT_FAILURE); | |
77 | } | |
78 | ||
d2c639d6 | 79 | /* Please keep in synch with qemu-img.texi */ |
ac1307ab | 80 | static void QEMU_NORETURN help(void) |
ea2384d3 | 81 | { |
e00291c0 | 82 | const char *help_msg = |
5f6979cb | 83 | QEMU_IMG_VERSION |
3f020d70 | 84 | "usage: qemu-img command [command options]\n" |
85 | "QEMU disk image utility\n" | |
86 | "\n" | |
87 | "Command syntax:\n" | |
153859be SB |
88 | #define DEF(option, callback, arg_string) \ |
89 | " " arg_string "\n" | |
90 | #include "qemu-img-cmds.h" | |
91 | #undef DEF | |
92 | #undef GEN_DOCS | |
3f020d70 | 93 | "\n" |
94 | "Command parameters:\n" | |
95 | " 'filename' is a disk image filename\n" | |
96 | " 'fmt' is the disk image format. It is guessed automatically in most cases\n" | |
661a0f71 | 97 | " 'cache' is the cache mode used to write the output disk image, the valid\n" |
80ccf93b LY |
98 | " options are: 'none', 'writeback' (default, except for convert), 'writethrough',\n" |
99 | " 'directsync' and 'unsafe' (default for convert)\n" | |
bb87fdf8 SH |
100 | " 'src_cache' is the cache mode used to read input disk images, the valid\n" |
101 | " options are the same as for the 'cache' option\n" | |
3f020d70 | 102 | " 'size' is the disk image size in bytes. Optional suffixes\n" |
5e00984a KW |
103 | " 'k' or 'K' (kilobyte, 1024), 'M' (megabyte, 1024k), 'G' (gigabyte, 1024M),\n" |
104 | " 'T' (terabyte, 1024G), 'P' (petabyte, 1024T) and 'E' (exabyte, 1024P) are\n" | |
105 | " supported. 'b' is ignored.\n" | |
3f020d70 | 106 | " 'output_filename' is the destination disk image filename\n" |
107 | " 'output_fmt' is the destination format\n" | |
108 | " 'options' is a comma separated list of format specific options in a\n" | |
109 | " name=value format. Use -o ? for an overview of the options supported by the\n" | |
110 | " used format\n" | |
ef80654d WX |
111 | " 'snapshot_param' is param used for internal snapshot, format\n" |
112 | " is 'snapshot.id=[ID],snapshot.name=[NAME]', or\n" | |
113 | " '[ID_OR_NAME]'\n" | |
114 | " 'snapshot_id_or_name' is deprecated, use 'snapshot_param'\n" | |
115 | " instead\n" | |
3f020d70 | 116 | " '-c' indicates that target image must be compressed (qcow format only)\n" |
117 | " '-u' enables unsafe rebasing. It is assumed that old and new backing file\n" | |
118 | " match exactly. The image doesn't need a working backing file before\n" | |
119 | " rebasing in this case (useful for renaming the backing file)\n" | |
120 | " '-h' with or without a command shows this help and lists the supported formats\n" | |
6b837bc4 | 121 | " '-p' show progress of command (only certain commands)\n" |
f382d43a | 122 | " '-q' use Quiet mode - do not print any output (except errors)\n" |
11b6699a PL |
123 | " '-S' indicates the consecutive number of bytes (defaults to 4k) that must\n" |
124 | " contain only zeros for qemu-img to create a sparse image during\n" | |
125 | " conversion. If the number of bytes is 0, the source will not be scanned for\n" | |
126 | " unallocated or zero sectors, and the destination image will always be\n" | |
127 | " fully allocated\n" | |
c054b3fd | 128 | " '--output' takes the format in which the output must be done (human or json)\n" |
b2e10493 AD |
129 | " '-n' skips the target volume creation (useful if the volume is created\n" |
130 | " prior to running qemu-img)\n" | |
3f020d70 | 131 | "\n" |
4534ff54 KW |
132 | "Parameters to check subcommand:\n" |
133 | " '-r' tries to repair any inconsistencies that are found during the check.\n" | |
134 | " '-r leaks' repairs only cluster leaks, whereas '-r all' fixes all\n" | |
135 | " kinds of errors, with a higher risk of choosing the wrong fix or\n" | |
0546b8c2 | 136 | " hiding corruption that has already occurred.\n" |
4534ff54 | 137 | "\n" |
3f020d70 | 138 | "Parameters to snapshot subcommand:\n" |
139 | " 'snapshot' is the name of the snapshot to create, apply or delete\n" | |
140 | " '-a' applies a snapshot (revert disk to saved state)\n" | |
141 | " '-c' creates a snapshot\n" | |
142 | " '-d' deletes a snapshot\n" | |
d14ed18c MR |
143 | " '-l' lists all snapshots in the given image\n" |
144 | "\n" | |
145 | "Parameters to compare subcommand:\n" | |
146 | " '-f' first image format\n" | |
147 | " '-F' second image format\n" | |
148 | " '-s' run in Strict mode - fail on different image size or sector allocation\n"; | |
e00291c0 PB |
149 | |
150 | printf("%s\nSupported formats:", help_msg); | |
00c6d403 | 151 | bdrv_iterate_format(format_print, NULL); |
ea2384d3 | 152 | printf("\n"); |
ac1307ab | 153 | exit(EXIT_SUCCESS); |
ea2384d3 FB |
154 | } |
155 | ||
7c30f657 | 156 | static int GCC_FMT_ATTR(2, 3) qprintf(bool quiet, const char *fmt, ...) |
f382d43a MR |
157 | { |
158 | int ret = 0; | |
159 | if (!quiet) { | |
160 | va_list args; | |
161 | va_start(args, fmt); | |
162 | ret = vprintf(fmt, args); | |
163 | va_end(args); | |
164 | } | |
165 | return ret; | |
166 | } | |
167 | ||
ea2384d3 FB |
168 | #if defined(WIN32) |
169 | /* XXX: put correct support for win32 */ | |
170 | static int read_password(char *buf, int buf_size) | |
171 | { | |
172 | int c, i; | |
fdcf6e65 | 173 | |
ea2384d3 FB |
174 | printf("Password: "); |
175 | fflush(stdout); | |
176 | i = 0; | |
177 | for(;;) { | |
178 | c = getchar(); | |
fdcf6e65 CG |
179 | if (c < 0) { |
180 | buf[i] = '\0'; | |
181 | return -1; | |
182 | } else if (c == '\n') { | |
ea2384d3 | 183 | break; |
fdcf6e65 | 184 | } else if (i < (buf_size - 1)) { |
ea2384d3 | 185 | buf[i++] = c; |
fdcf6e65 | 186 | } |
ea2384d3 FB |
187 | } |
188 | buf[i] = '\0'; | |
189 | return 0; | |
190 | } | |
191 | ||
192 | #else | |
193 | ||
194 | #include <termios.h> | |
195 | ||
196 | static struct termios oldtty; | |
197 | ||
198 | static void term_exit(void) | |
199 | { | |
200 | tcsetattr (0, TCSANOW, &oldtty); | |
201 | } | |
202 | ||
203 | static void term_init(void) | |
204 | { | |
205 | struct termios tty; | |
206 | ||
207 | tcgetattr (0, &tty); | |
208 | oldtty = tty; | |
209 | ||
210 | tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP | |
211 | |INLCR|IGNCR|ICRNL|IXON); | |
212 | tty.c_oflag |= OPOST; | |
213 | tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN); | |
214 | tty.c_cflag &= ~(CSIZE|PARENB); | |
215 | tty.c_cflag |= CS8; | |
216 | tty.c_cc[VMIN] = 1; | |
217 | tty.c_cc[VTIME] = 0; | |
3b46e624 | 218 | |
ea2384d3 FB |
219 | tcsetattr (0, TCSANOW, &tty); |
220 | ||
221 | atexit(term_exit); | |
222 | } | |
223 | ||
3f379ab1 | 224 | static int read_password(char *buf, int buf_size) |
ea2384d3 FB |
225 | { |
226 | uint8_t ch; | |
227 | int i, ret; | |
228 | ||
229 | printf("password: "); | |
230 | fflush(stdout); | |
231 | term_init(); | |
232 | i = 0; | |
233 | for(;;) { | |
234 | ret = read(0, &ch, 1); | |
235 | if (ret == -1) { | |
236 | if (errno == EAGAIN || errno == EINTR) { | |
237 | continue; | |
238 | } else { | |
ea2384d3 FB |
239 | break; |
240 | } | |
241 | } else if (ret == 0) { | |
242 | ret = -1; | |
243 | break; | |
244 | } else { | |
245 | if (ch == '\r') { | |
246 | ret = 0; | |
247 | break; | |
248 | } | |
249 | if (i < (buf_size - 1)) | |
250 | buf[i++] = ch; | |
251 | } | |
252 | } | |
253 | term_exit(); | |
254 | buf[i] = '\0'; | |
255 | printf("\n"); | |
256 | return ret; | |
257 | } | |
258 | #endif | |
259 | ||
4ac8aacd JS |
260 | static int print_block_option_help(const char *filename, const char *fmt) |
261 | { | |
262 | BlockDriver *drv, *proto_drv; | |
83d0521a | 263 | QemuOptsList *create_opts = NULL; |
4ac8aacd JS |
264 | |
265 | /* Find driver and parse its options */ | |
266 | drv = bdrv_find_format(fmt); | |
267 | if (!drv) { | |
15654a6d | 268 | error_report("Unknown file format '%s'", fmt); |
4ac8aacd JS |
269 | return 1; |
270 | } | |
271 | ||
c282e1fd | 272 | create_opts = qemu_opts_append(create_opts, drv->create_opts); |
a283cb6e KW |
273 | if (filename) { |
274 | proto_drv = bdrv_find_protocol(filename, true); | |
275 | if (!proto_drv) { | |
276 | error_report("Unknown protocol '%s'", filename); | |
83d0521a | 277 | qemu_opts_free(create_opts); |
a283cb6e KW |
278 | return 1; |
279 | } | |
c282e1fd | 280 | create_opts = qemu_opts_append(create_opts, proto_drv->create_opts); |
a283cb6e KW |
281 | } |
282 | ||
83d0521a CL |
283 | qemu_opts_print_help(create_opts); |
284 | qemu_opts_free(create_opts); | |
4ac8aacd JS |
285 | return 0; |
286 | } | |
287 | ||
7e7d56d9 MA |
288 | static BlockBackend *img_open(const char *id, const char *filename, |
289 | const char *fmt, int flags, | |
290 | bool require_io, bool quiet) | |
75c23805 | 291 | { |
7e7d56d9 | 292 | BlockBackend *blk; |
75c23805 FB |
293 | BlockDriverState *bs; |
294 | BlockDriver *drv; | |
295 | char password[256]; | |
34b5d2c6 | 296 | Error *local_err = NULL; |
b9eaf9ec | 297 | int ret; |
75c23805 | 298 | |
7e7d56d9 MA |
299 | blk = blk_new_with_bs(id, &error_abort); |
300 | bs = blk_bs(blk); | |
ad717139 | 301 | |
75c23805 FB |
302 | if (fmt) { |
303 | drv = bdrv_find_format(fmt); | |
c2abccec | 304 | if (!drv) { |
15654a6d | 305 | error_report("Unknown file format '%s'", fmt); |
c2abccec MK |
306 | goto fail; |
307 | } | |
75c23805 FB |
308 | } else { |
309 | drv = NULL; | |
310 | } | |
b9eaf9ec | 311 | |
ddf5636d | 312 | ret = bdrv_open(&bs, filename, NULL, NULL, flags, drv, &local_err); |
b9eaf9ec | 313 | if (ret < 0) { |
34b5d2c6 HR |
314 | error_report("Could not open '%s': %s", filename, |
315 | error_get_pretty(local_err)); | |
316 | error_free(local_err); | |
c2abccec | 317 | goto fail; |
75c23805 | 318 | } |
b9eaf9ec | 319 | |
f0536bb8 | 320 | if (bdrv_is_encrypted(bs) && require_io) { |
f382d43a | 321 | qprintf(quiet, "Disk image '%s' is encrypted.\n", filename); |
c2abccec | 322 | if (read_password(password, sizeof(password)) < 0) { |
15654a6d | 323 | error_report("No password given"); |
c2abccec MK |
324 | goto fail; |
325 | } | |
326 | if (bdrv_set_key(bs, password) < 0) { | |
15654a6d | 327 | error_report("invalid password"); |
c2abccec MK |
328 | goto fail; |
329 | } | |
75c23805 | 330 | } |
7e7d56d9 | 331 | return blk; |
c2abccec | 332 | fail: |
7e7d56d9 | 333 | blk_unref(blk); |
c2abccec | 334 | return NULL; |
75c23805 FB |
335 | } |
336 | ||
83d0521a | 337 | static int add_old_style_options(const char *fmt, QemuOpts *opts, |
eec77d9e JS |
338 | const char *base_filename, |
339 | const char *base_fmt) | |
efa84d43 | 340 | { |
efa84d43 | 341 | if (base_filename) { |
83d0521a | 342 | if (qemu_opt_set(opts, BLOCK_OPT_BACKING_FILE, base_filename)) { |
15654a6d JS |
343 | error_report("Backing file not supported for file format '%s'", |
344 | fmt); | |
c2abccec | 345 | return -1; |
efa84d43 KW |
346 | } |
347 | } | |
348 | if (base_fmt) { | |
83d0521a | 349 | if (qemu_opt_set(opts, BLOCK_OPT_BACKING_FMT, base_fmt)) { |
15654a6d JS |
350 | error_report("Backing file format not supported for file " |
351 | "format '%s'", fmt); | |
c2abccec | 352 | return -1; |
efa84d43 KW |
353 | } |
354 | } | |
c2abccec | 355 | return 0; |
efa84d43 KW |
356 | } |
357 | ||
ea2384d3 FB |
358 | static int img_create(int argc, char **argv) |
359 | { | |
a9300911 | 360 | int c; |
1da7cfbd | 361 | uint64_t img_size = -1; |
ea2384d3 | 362 | const char *fmt = "raw"; |
9230eaf6 | 363 | const char *base_fmt = NULL; |
ea2384d3 FB |
364 | const char *filename; |
365 | const char *base_filename = NULL; | |
9ea2ea71 | 366 | char *options = NULL; |
9b37525a | 367 | Error *local_err = NULL; |
f382d43a | 368 | bool quiet = false; |
3b46e624 | 369 | |
ea2384d3 | 370 | for(;;) { |
f382d43a | 371 | c = getopt(argc, argv, "F:b:f:he6o:q"); |
b8fb60da | 372 | if (c == -1) { |
ea2384d3 | 373 | break; |
b8fb60da | 374 | } |
ea2384d3 | 375 | switch(c) { |
ef87394c | 376 | case '?': |
ea2384d3 FB |
377 | case 'h': |
378 | help(); | |
379 | break; | |
9230eaf6 AL |
380 | case 'F': |
381 | base_fmt = optarg; | |
382 | break; | |
ea2384d3 FB |
383 | case 'b': |
384 | base_filename = optarg; | |
385 | break; | |
386 | case 'f': | |
387 | fmt = optarg; | |
388 | break; | |
389 | case 'e': | |
9d42e15d | 390 | error_report("option -e is deprecated, please use \'-o " |
eec77d9e | 391 | "encryption\' instead!"); |
77386bf6 | 392 | goto fail; |
d8871c5a | 393 | case '6': |
9d42e15d | 394 | error_report("option -6 is deprecated, please use \'-o " |
eec77d9e | 395 | "compat6\' instead!"); |
77386bf6 | 396 | goto fail; |
9ea2ea71 | 397 | case 'o': |
77386bf6 KW |
398 | if (!is_valid_option_list(optarg)) { |
399 | error_report("Invalid option list: %s", optarg); | |
400 | goto fail; | |
401 | } | |
402 | if (!options) { | |
403 | options = g_strdup(optarg); | |
404 | } else { | |
405 | char *old_options = options; | |
406 | options = g_strdup_printf("%s,%s", options, optarg); | |
407 | g_free(old_options); | |
408 | } | |
9ea2ea71 | 409 | break; |
f382d43a MR |
410 | case 'q': |
411 | quiet = true; | |
412 | break; | |
ea2384d3 FB |
413 | } |
414 | } | |
9230eaf6 | 415 | |
b50cbabc | 416 | /* Get the filename */ |
a283cb6e KW |
417 | filename = (optind < argc) ? argv[optind] : NULL; |
418 | if (options && has_help_option(options)) { | |
419 | g_free(options); | |
420 | return print_block_option_help(filename, fmt); | |
421 | } | |
422 | ||
b8fb60da | 423 | if (optind >= argc) { |
ac1307ab | 424 | error_exit("Expecting image file name"); |
b8fb60da | 425 | } |
a283cb6e | 426 | optind++; |
b50cbabc | 427 | |
1da7cfbd JS |
428 | /* Get image size, if specified */ |
429 | if (optind < argc) { | |
70b4f4bb | 430 | int64_t sval; |
e36b3695 MA |
431 | char *end; |
432 | sval = strtosz_suffix(argv[optind++], &end, STRTOSZ_DEFSUFFIX_B); | |
433 | if (sval < 0 || *end) { | |
79443397 LG |
434 | if (sval == -ERANGE) { |
435 | error_report("Image size must be less than 8 EiB!"); | |
436 | } else { | |
437 | error_report("Invalid image size specified! You may use k, M, " | |
5e00984a KW |
438 | "G, T, P or E suffixes for "); |
439 | error_report("kilobytes, megabytes, gigabytes, terabytes, " | |
440 | "petabytes and exabytes."); | |
79443397 | 441 | } |
77386bf6 | 442 | goto fail; |
1da7cfbd JS |
443 | } |
444 | img_size = (uint64_t)sval; | |
445 | } | |
fc11eb26 | 446 | if (optind != argc) { |
ac1307ab | 447 | error_exit("Unexpected argument: %s", argv[optind]); |
fc11eb26 | 448 | } |
1da7cfbd | 449 | |
9b37525a | 450 | bdrv_img_create(filename, fmt, base_filename, base_fmt, |
f382d43a | 451 | options, img_size, BDRV_O_FLAGS, &local_err, quiet); |
84d18f06 | 452 | if (local_err) { |
b70d8c23 | 453 | error_report("%s: %s", filename, error_get_pretty(local_err)); |
9b37525a | 454 | error_free(local_err); |
77386bf6 | 455 | goto fail; |
c2abccec | 456 | } |
a9300911 | 457 | |
77386bf6 | 458 | g_free(options); |
ea2384d3 | 459 | return 0; |
77386bf6 KW |
460 | |
461 | fail: | |
462 | g_free(options); | |
463 | return 1; | |
ea2384d3 FB |
464 | } |
465 | ||
f382d43a | 466 | static void dump_json_image_check(ImageCheck *check, bool quiet) |
8599ea4c | 467 | { |
4399c438 | 468 | Error *local_err = NULL; |
8599ea4c FS |
469 | QString *str; |
470 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
471 | QObject *obj; | |
472 | visit_type_ImageCheck(qmp_output_get_visitor(ov), | |
4399c438 | 473 | &check, NULL, &local_err); |
8599ea4c FS |
474 | obj = qmp_output_get_qobject(ov); |
475 | str = qobject_to_json_pretty(obj); | |
476 | assert(str != NULL); | |
f382d43a | 477 | qprintf(quiet, "%s\n", qstring_get_str(str)); |
8599ea4c FS |
478 | qobject_decref(obj); |
479 | qmp_output_visitor_cleanup(ov); | |
480 | QDECREF(str); | |
481 | } | |
482 | ||
f382d43a | 483 | static void dump_human_image_check(ImageCheck *check, bool quiet) |
8599ea4c FS |
484 | { |
485 | if (!(check->corruptions || check->leaks || check->check_errors)) { | |
f382d43a | 486 | qprintf(quiet, "No errors were found on the image.\n"); |
8599ea4c FS |
487 | } else { |
488 | if (check->corruptions) { | |
f382d43a MR |
489 | qprintf(quiet, "\n%" PRId64 " errors were found on the image.\n" |
490 | "Data may be corrupted, or further writes to the image " | |
491 | "may corrupt it.\n", | |
492 | check->corruptions); | |
8599ea4c FS |
493 | } |
494 | ||
495 | if (check->leaks) { | |
f382d43a MR |
496 | qprintf(quiet, |
497 | "\n%" PRId64 " leaked clusters were found on the image.\n" | |
498 | "This means waste of disk space, but no harm to data.\n", | |
499 | check->leaks); | |
8599ea4c FS |
500 | } |
501 | ||
502 | if (check->check_errors) { | |
f382d43a MR |
503 | qprintf(quiet, |
504 | "\n%" PRId64 | |
505 | " internal errors have occurred during the check.\n", | |
506 | check->check_errors); | |
8599ea4c FS |
507 | } |
508 | } | |
509 | ||
510 | if (check->total_clusters != 0 && check->allocated_clusters != 0) { | |
f382d43a MR |
511 | qprintf(quiet, "%" PRId64 "/%" PRId64 " = %0.2f%% allocated, " |
512 | "%0.2f%% fragmented, %0.2f%% compressed clusters\n", | |
513 | check->allocated_clusters, check->total_clusters, | |
514 | check->allocated_clusters * 100.0 / check->total_clusters, | |
515 | check->fragmented_clusters * 100.0 / check->allocated_clusters, | |
516 | check->compressed_clusters * 100.0 / | |
517 | check->allocated_clusters); | |
8599ea4c FS |
518 | } |
519 | ||
520 | if (check->image_end_offset) { | |
f382d43a MR |
521 | qprintf(quiet, |
522 | "Image end offset: %" PRId64 "\n", check->image_end_offset); | |
8599ea4c FS |
523 | } |
524 | } | |
525 | ||
526 | static int collect_image_check(BlockDriverState *bs, | |
527 | ImageCheck *check, | |
528 | const char *filename, | |
529 | const char *fmt, | |
530 | int fix) | |
531 | { | |
532 | int ret; | |
533 | BdrvCheckResult result; | |
534 | ||
535 | ret = bdrv_check(bs, &result, fix); | |
536 | if (ret < 0) { | |
537 | return ret; | |
538 | } | |
539 | ||
540 | check->filename = g_strdup(filename); | |
541 | check->format = g_strdup(bdrv_get_format_name(bs)); | |
542 | check->check_errors = result.check_errors; | |
543 | check->corruptions = result.corruptions; | |
544 | check->has_corruptions = result.corruptions != 0; | |
545 | check->leaks = result.leaks; | |
546 | check->has_leaks = result.leaks != 0; | |
547 | check->corruptions_fixed = result.corruptions_fixed; | |
548 | check->has_corruptions_fixed = result.corruptions != 0; | |
549 | check->leaks_fixed = result.leaks_fixed; | |
550 | check->has_leaks_fixed = result.leaks != 0; | |
551 | check->image_end_offset = result.image_end_offset; | |
552 | check->has_image_end_offset = result.image_end_offset != 0; | |
553 | check->total_clusters = result.bfi.total_clusters; | |
554 | check->has_total_clusters = result.bfi.total_clusters != 0; | |
555 | check->allocated_clusters = result.bfi.allocated_clusters; | |
556 | check->has_allocated_clusters = result.bfi.allocated_clusters != 0; | |
557 | check->fragmented_clusters = result.bfi.fragmented_clusters; | |
558 | check->has_fragmented_clusters = result.bfi.fragmented_clusters != 0; | |
e6439d78 SH |
559 | check->compressed_clusters = result.bfi.compressed_clusters; |
560 | check->has_compressed_clusters = result.bfi.compressed_clusters != 0; | |
8599ea4c FS |
561 | |
562 | return 0; | |
563 | } | |
564 | ||
e076f338 KW |
565 | /* |
566 | * Checks an image for consistency. Exit codes: | |
567 | * | |
d6635c4d HR |
568 | * 0 - Check completed, image is good |
569 | * 1 - Check not completed because of internal errors | |
570 | * 2 - Check completed, image is corrupted | |
571 | * 3 - Check completed, image has leaked clusters, but is good otherwise | |
572 | * 63 - Checks are not supported by the image format | |
e076f338 | 573 | */ |
1585969c AL |
574 | static int img_check(int argc, char **argv) |
575 | { | |
576 | int c, ret; | |
8599ea4c | 577 | OutputFormat output_format = OFORMAT_HUMAN; |
40055951 | 578 | const char *filename, *fmt, *output, *cache; |
26f54e9a | 579 | BlockBackend *blk; |
1585969c | 580 | BlockDriverState *bs; |
4534ff54 | 581 | int fix = 0; |
058f8f16 | 582 | int flags = BDRV_O_FLAGS | BDRV_O_CHECK; |
7e7d56d9 | 583 | ImageCheck *check; |
f382d43a | 584 | bool quiet = false; |
1585969c AL |
585 | |
586 | fmt = NULL; | |
8599ea4c | 587 | output = NULL; |
40055951 | 588 | cache = BDRV_DEFAULT_CACHE; |
1585969c | 589 | for(;;) { |
8599ea4c FS |
590 | int option_index = 0; |
591 | static const struct option long_options[] = { | |
592 | {"help", no_argument, 0, 'h'}, | |
593 | {"format", required_argument, 0, 'f'}, | |
4fd6a984 | 594 | {"repair", required_argument, 0, 'r'}, |
8599ea4c FS |
595 | {"output", required_argument, 0, OPTION_OUTPUT}, |
596 | {0, 0, 0, 0} | |
597 | }; | |
40055951 | 598 | c = getopt_long(argc, argv, "hf:r:T:q", |
8599ea4c | 599 | long_options, &option_index); |
b8fb60da | 600 | if (c == -1) { |
1585969c | 601 | break; |
b8fb60da | 602 | } |
1585969c | 603 | switch(c) { |
ef87394c | 604 | case '?': |
1585969c AL |
605 | case 'h': |
606 | help(); | |
607 | break; | |
608 | case 'f': | |
609 | fmt = optarg; | |
610 | break; | |
4534ff54 KW |
611 | case 'r': |
612 | flags |= BDRV_O_RDWR; | |
613 | ||
614 | if (!strcmp(optarg, "leaks")) { | |
615 | fix = BDRV_FIX_LEAKS; | |
616 | } else if (!strcmp(optarg, "all")) { | |
617 | fix = BDRV_FIX_LEAKS | BDRV_FIX_ERRORS; | |
618 | } else { | |
ac1307ab FZ |
619 | error_exit("Unknown option value for -r " |
620 | "(expecting 'leaks' or 'all'): %s", optarg); | |
4534ff54 KW |
621 | } |
622 | break; | |
8599ea4c FS |
623 | case OPTION_OUTPUT: |
624 | output = optarg; | |
625 | break; | |
40055951 HR |
626 | case 'T': |
627 | cache = optarg; | |
628 | break; | |
f382d43a MR |
629 | case 'q': |
630 | quiet = true; | |
631 | break; | |
1585969c AL |
632 | } |
633 | } | |
fc11eb26 | 634 | if (optind != argc - 1) { |
ac1307ab | 635 | error_exit("Expecting one image file name"); |
b8fb60da | 636 | } |
1585969c AL |
637 | filename = argv[optind++]; |
638 | ||
8599ea4c FS |
639 | if (output && !strcmp(output, "json")) { |
640 | output_format = OFORMAT_JSON; | |
641 | } else if (output && !strcmp(output, "human")) { | |
642 | output_format = OFORMAT_HUMAN; | |
643 | } else if (output) { | |
644 | error_report("--output must be used with human or json as argument."); | |
645 | return 1; | |
646 | } | |
647 | ||
40055951 HR |
648 | ret = bdrv_parse_cache_flags(cache, &flags); |
649 | if (ret < 0) { | |
650 | error_report("Invalid source cache option: %s", cache); | |
651 | return 1; | |
652 | } | |
653 | ||
7e7d56d9 MA |
654 | blk = img_open("image", filename, fmt, flags, true, quiet); |
655 | if (!blk) { | |
656 | return 1; | |
c2abccec | 657 | } |
7e7d56d9 | 658 | bs = blk_bs(blk); |
8599ea4c FS |
659 | |
660 | check = g_new0(ImageCheck, 1); | |
661 | ret = collect_image_check(bs, check, filename, fmt, fix); | |
e076f338 KW |
662 | |
663 | if (ret == -ENOTSUP) { | |
55d492d7 | 664 | error_report("This image format does not support checks"); |
fefddf95 | 665 | ret = 63; |
8599ea4c | 666 | goto fail; |
e076f338 KW |
667 | } |
668 | ||
8599ea4c FS |
669 | if (check->corruptions_fixed || check->leaks_fixed) { |
670 | int corruptions_fixed, leaks_fixed; | |
ccf34716 | 671 | |
8599ea4c FS |
672 | leaks_fixed = check->leaks_fixed; |
673 | corruptions_fixed = check->corruptions_fixed; | |
e076f338 | 674 | |
8599ea4c | 675 | if (output_format == OFORMAT_HUMAN) { |
f382d43a MR |
676 | qprintf(quiet, |
677 | "The following inconsistencies were found and repaired:\n\n" | |
678 | " %" PRId64 " leaked clusters\n" | |
679 | " %" PRId64 " corruptions\n\n" | |
680 | "Double checking the fixed image now...\n", | |
681 | check->leaks_fixed, | |
682 | check->corruptions_fixed); | |
e076f338 KW |
683 | } |
684 | ||
8599ea4c | 685 | ret = collect_image_check(bs, check, filename, fmt, 0); |
1585969c | 686 | |
8599ea4c FS |
687 | check->leaks_fixed = leaks_fixed; |
688 | check->corruptions_fixed = corruptions_fixed; | |
f8111c24 DXW |
689 | } |
690 | ||
832390a5 HR |
691 | if (!ret) { |
692 | switch (output_format) { | |
693 | case OFORMAT_HUMAN: | |
694 | dump_human_image_check(check, quiet); | |
695 | break; | |
696 | case OFORMAT_JSON: | |
697 | dump_json_image_check(check, quiet); | |
698 | break; | |
699 | } | |
c6bb9ad1 FS |
700 | } |
701 | ||
8599ea4c | 702 | if (ret || check->check_errors) { |
832390a5 HR |
703 | if (ret) { |
704 | error_report("Check failed: %s", strerror(-ret)); | |
705 | } else { | |
706 | error_report("Check failed"); | |
707 | } | |
8599ea4c FS |
708 | ret = 1; |
709 | goto fail; | |
c2abccec | 710 | } |
e076f338 | 711 | |
8599ea4c FS |
712 | if (check->corruptions) { |
713 | ret = 2; | |
714 | } else if (check->leaks) { | |
715 | ret = 3; | |
e076f338 | 716 | } else { |
8599ea4c | 717 | ret = 0; |
e076f338 | 718 | } |
8599ea4c FS |
719 | |
720 | fail: | |
721 | qapi_free_ImageCheck(check); | |
26f54e9a | 722 | blk_unref(blk); |
8599ea4c | 723 | return ret; |
1585969c AL |
724 | } |
725 | ||
d4a3238a HR |
726 | typedef struct CommonBlockJobCBInfo { |
727 | BlockDriverState *bs; | |
728 | Error **errp; | |
729 | } CommonBlockJobCBInfo; | |
730 | ||
731 | static void common_block_job_cb(void *opaque, int ret) | |
732 | { | |
733 | CommonBlockJobCBInfo *cbi = opaque; | |
734 | ||
735 | if (ret < 0) { | |
736 | error_setg_errno(cbi->errp, -ret, "Block job failed"); | |
737 | } | |
738 | ||
739 | /* Drop this block job's reference */ | |
740 | bdrv_unref(cbi->bs); | |
741 | } | |
742 | ||
743 | static void run_block_job(BlockJob *job, Error **errp) | |
744 | { | |
745 | AioContext *aio_context = bdrv_get_aio_context(job->bs); | |
746 | ||
747 | do { | |
748 | aio_poll(aio_context, true); | |
687fa1d8 | 749 | qemu_progress_print((float)job->offset / job->len * 100.f, 0); |
d4a3238a HR |
750 | } while (!job->ready); |
751 | ||
752 | block_job_complete_sync(job, errp); | |
687fa1d8 HR |
753 | |
754 | /* A block job may finish instantaneously without publishing any progress, | |
755 | * so just signal completion here */ | |
756 | qemu_progress_print(100.f, 0); | |
d4a3238a HR |
757 | } |
758 | ||
ea2384d3 FB |
759 | static int img_commit(int argc, char **argv) |
760 | { | |
661a0f71 | 761 | int c, ret, flags; |
1b22bffd | 762 | const char *filename, *fmt, *cache, *base; |
26f54e9a | 763 | BlockBackend *blk; |
d4a3238a | 764 | BlockDriverState *bs, *base_bs; |
687fa1d8 | 765 | bool progress = false, quiet = false, drop = false; |
d4a3238a HR |
766 | Error *local_err = NULL; |
767 | CommonBlockJobCBInfo cbi; | |
ea2384d3 FB |
768 | |
769 | fmt = NULL; | |
661a0f71 | 770 | cache = BDRV_DEFAULT_CACHE; |
1b22bffd | 771 | base = NULL; |
ea2384d3 | 772 | for(;;) { |
1b22bffd | 773 | c = getopt(argc, argv, "f:ht:b:dpq"); |
b8fb60da | 774 | if (c == -1) { |
ea2384d3 | 775 | break; |
b8fb60da | 776 | } |
ea2384d3 | 777 | switch(c) { |
ef87394c | 778 | case '?': |
ea2384d3 FB |
779 | case 'h': |
780 | help(); | |
781 | break; | |
782 | case 'f': | |
783 | fmt = optarg; | |
784 | break; | |
661a0f71 FS |
785 | case 't': |
786 | cache = optarg; | |
787 | break; | |
1b22bffd HR |
788 | case 'b': |
789 | base = optarg; | |
790 | /* -b implies -d */ | |
791 | drop = true; | |
792 | break; | |
9a86fe48 HR |
793 | case 'd': |
794 | drop = true; | |
795 | break; | |
687fa1d8 HR |
796 | case 'p': |
797 | progress = true; | |
798 | break; | |
f382d43a MR |
799 | case 'q': |
800 | quiet = true; | |
801 | break; | |
ea2384d3 FB |
802 | } |
803 | } | |
687fa1d8 HR |
804 | |
805 | /* Progress is not shown in Quiet mode */ | |
806 | if (quiet) { | |
807 | progress = false; | |
808 | } | |
809 | ||
fc11eb26 | 810 | if (optind != argc - 1) { |
ac1307ab | 811 | error_exit("Expecting one image file name"); |
b8fb60da | 812 | } |
ea2384d3 FB |
813 | filename = argv[optind++]; |
814 | ||
9a86fe48 | 815 | flags = BDRV_O_RDWR | BDRV_O_UNMAP; |
c3993cdc | 816 | ret = bdrv_parse_cache_flags(cache, &flags); |
661a0f71 FS |
817 | if (ret < 0) { |
818 | error_report("Invalid cache option: %s", cache); | |
a3981eb9 | 819 | return 1; |
661a0f71 FS |
820 | } |
821 | ||
7e7d56d9 MA |
822 | blk = img_open("image", filename, fmt, flags, true, quiet); |
823 | if (!blk) { | |
824 | return 1; | |
c2abccec | 825 | } |
7e7d56d9 MA |
826 | bs = blk_bs(blk); |
827 | ||
687fa1d8 HR |
828 | qemu_progress_init(progress, 1.f); |
829 | qemu_progress_print(0.f, 100); | |
830 | ||
1b22bffd HR |
831 | if (base) { |
832 | base_bs = bdrv_find_backing_image(bs, base); | |
833 | if (!base_bs) { | |
834 | error_set(&local_err, QERR_BASE_NOT_FOUND, base); | |
835 | goto done; | |
836 | } | |
837 | } else { | |
838 | /* This is different from QMP, which by default uses the deepest file in | |
839 | * the backing chain (i.e., the very base); however, the traditional | |
840 | * behavior of qemu-img commit is using the immediate backing file. */ | |
841 | base_bs = bs->backing_hd; | |
842 | if (!base_bs) { | |
843 | error_setg(&local_err, "Image does not have a backing file"); | |
844 | goto done; | |
845 | } | |
d4a3238a HR |
846 | } |
847 | ||
848 | cbi = (CommonBlockJobCBInfo){ | |
849 | .errp = &local_err, | |
850 | .bs = bs, | |
851 | }; | |
852 | ||
853 | commit_active_start(bs, base_bs, 0, BLOCKDEV_ON_ERROR_REPORT, | |
854 | common_block_job_cb, &cbi, &local_err); | |
855 | if (local_err) { | |
856 | goto done; | |
ea2384d3 FB |
857 | } |
858 | ||
9a86fe48 HR |
859 | /* The block job will swap base_bs and bs (which is not what we really want |
860 | * here, but okay) and unref base_bs (after the swap, i.e., the old top | |
861 | * image). In order to still be able to empty that top image afterwards, | |
862 | * increment the reference counter here preemptively. */ | |
863 | if (!drop) { | |
864 | bdrv_ref(base_bs); | |
865 | } | |
866 | ||
d4a3238a | 867 | run_block_job(bs->job, &local_err); |
9a86fe48 HR |
868 | if (local_err) { |
869 | goto unref_backing; | |
870 | } | |
871 | ||
872 | if (!drop && base_bs->drv->bdrv_make_empty) { | |
873 | ret = base_bs->drv->bdrv_make_empty(base_bs); | |
874 | if (ret) { | |
875 | error_setg_errno(&local_err, -ret, "Could not empty %s", | |
876 | filename); | |
877 | goto unref_backing; | |
878 | } | |
879 | } | |
880 | ||
881 | unref_backing: | |
882 | if (!drop) { | |
883 | bdrv_unref(base_bs); | |
884 | } | |
d4a3238a HR |
885 | |
886 | done: | |
687fa1d8 HR |
887 | qemu_progress_end(); |
888 | ||
26f54e9a | 889 | blk_unref(blk); |
d4a3238a HR |
890 | |
891 | if (local_err) { | |
892 | qerror_report_err(local_err); | |
893 | error_free(local_err); | |
c2abccec MK |
894 | return 1; |
895 | } | |
d4a3238a HR |
896 | |
897 | qprintf(quiet, "Image committed.\n"); | |
ea2384d3 FB |
898 | return 0; |
899 | } | |
900 | ||
f58c7b35 TS |
901 | /* |
902 | * Returns true iff the first sector pointed to by 'buf' contains at least | |
903 | * a non-NUL byte. | |
904 | * | |
905 | * 'pnum' is set to the number of sectors (including and immediately following | |
906 | * the first one) that are known to be in the same allocated/unallocated state. | |
907 | */ | |
ea2384d3 FB |
908 | static int is_allocated_sectors(const uint8_t *buf, int n, int *pnum) |
909 | { | |
1a6d39fd SH |
910 | bool is_zero; |
911 | int i; | |
ea2384d3 FB |
912 | |
913 | if (n <= 0) { | |
914 | *pnum = 0; | |
915 | return 0; | |
916 | } | |
1a6d39fd | 917 | is_zero = buffer_is_zero(buf, 512); |
ea2384d3 FB |
918 | for(i = 1; i < n; i++) { |
919 | buf += 512; | |
1a6d39fd | 920 | if (is_zero != buffer_is_zero(buf, 512)) { |
ea2384d3 | 921 | break; |
1a6d39fd | 922 | } |
ea2384d3 FB |
923 | } |
924 | *pnum = i; | |
1a6d39fd | 925 | return !is_zero; |
ea2384d3 FB |
926 | } |
927 | ||
a22f123c KW |
928 | /* |
929 | * Like is_allocated_sectors, but if the buffer starts with a used sector, | |
930 | * up to 'min' consecutive sectors containing zeros are ignored. This avoids | |
931 | * breaking up write requests for only small sparse areas. | |
932 | */ | |
933 | static int is_allocated_sectors_min(const uint8_t *buf, int n, int *pnum, | |
934 | int min) | |
935 | { | |
936 | int ret; | |
937 | int num_checked, num_used; | |
938 | ||
939 | if (n < min) { | |
940 | min = n; | |
941 | } | |
942 | ||
943 | ret = is_allocated_sectors(buf, n, pnum); | |
944 | if (!ret) { | |
945 | return ret; | |
946 | } | |
947 | ||
948 | num_used = *pnum; | |
949 | buf += BDRV_SECTOR_SIZE * *pnum; | |
950 | n -= *pnum; | |
951 | num_checked = num_used; | |
952 | ||
953 | while (n > 0) { | |
954 | ret = is_allocated_sectors(buf, n, pnum); | |
955 | ||
956 | buf += BDRV_SECTOR_SIZE * *pnum; | |
957 | n -= *pnum; | |
958 | num_checked += *pnum; | |
959 | if (ret) { | |
960 | num_used = num_checked; | |
961 | } else if (*pnum >= min) { | |
962 | break; | |
963 | } | |
964 | } | |
965 | ||
966 | *pnum = num_used; | |
967 | return 1; | |
968 | } | |
969 | ||
3e85c6fd KW |
970 | /* |
971 | * Compares two buffers sector by sector. Returns 0 if the first sector of both | |
972 | * buffers matches, non-zero otherwise. | |
973 | * | |
974 | * pnum is set to the number of sectors (including and immediately following | |
975 | * the first one) that are known to have the same comparison result | |
976 | */ | |
977 | static int compare_sectors(const uint8_t *buf1, const uint8_t *buf2, int n, | |
978 | int *pnum) | |
979 | { | |
980 | int res, i; | |
981 | ||
982 | if (n <= 0) { | |
983 | *pnum = 0; | |
984 | return 0; | |
985 | } | |
986 | ||
987 | res = !!memcmp(buf1, buf2, 512); | |
988 | for(i = 1; i < n; i++) { | |
989 | buf1 += 512; | |
990 | buf2 += 512; | |
991 | ||
992 | if (!!memcmp(buf1, buf2, 512) != res) { | |
993 | break; | |
994 | } | |
995 | } | |
996 | ||
997 | *pnum = i; | |
998 | return res; | |
999 | } | |
1000 | ||
80ee15a6 | 1001 | #define IO_BUF_SIZE (2 * 1024 * 1024) |
ea2384d3 | 1002 | |
d14ed18c MR |
1003 | static int64_t sectors_to_bytes(int64_t sectors) |
1004 | { | |
1005 | return sectors << BDRV_SECTOR_BITS; | |
1006 | } | |
1007 | ||
1008 | static int64_t sectors_to_process(int64_t total, int64_t from) | |
1009 | { | |
1010 | return MIN(total - from, IO_BUF_SIZE >> BDRV_SECTOR_BITS); | |
1011 | } | |
1012 | ||
1013 | /* | |
1014 | * Check if passed sectors are empty (not allocated or contain only 0 bytes) | |
1015 | * | |
1016 | * Returns 0 in case sectors are filled with 0, 1 if sectors contain non-zero | |
1017 | * data and negative value on error. | |
1018 | * | |
1019 | * @param bs: Driver used for accessing file | |
1020 | * @param sect_num: Number of first sector to check | |
1021 | * @param sect_count: Number of sectors to check | |
1022 | * @param filename: Name of disk file we are checking (logging purpose) | |
1023 | * @param buffer: Allocated buffer for storing read data | |
1024 | * @param quiet: Flag for quiet mode | |
1025 | */ | |
1026 | static int check_empty_sectors(BlockDriverState *bs, int64_t sect_num, | |
1027 | int sect_count, const char *filename, | |
1028 | uint8_t *buffer, bool quiet) | |
1029 | { | |
1030 | int pnum, ret = 0; | |
1031 | ret = bdrv_read(bs, sect_num, buffer, sect_count); | |
1032 | if (ret < 0) { | |
1033 | error_report("Error while reading offset %" PRId64 " of %s: %s", | |
1034 | sectors_to_bytes(sect_num), filename, strerror(-ret)); | |
1035 | return ret; | |
1036 | } | |
1037 | ret = is_allocated_sectors(buffer, sect_count, &pnum); | |
1038 | if (ret || pnum != sect_count) { | |
1039 | qprintf(quiet, "Content mismatch at offset %" PRId64 "!\n", | |
1040 | sectors_to_bytes(ret ? sect_num : sect_num + pnum)); | |
1041 | return 1; | |
1042 | } | |
1043 | ||
1044 | return 0; | |
1045 | } | |
1046 | ||
1047 | /* | |
1048 | * Compares two images. Exit codes: | |
1049 | * | |
1050 | * 0 - Images are identical | |
1051 | * 1 - Images differ | |
1052 | * >1 - Error occurred | |
1053 | */ | |
1054 | static int img_compare(int argc, char **argv) | |
1055 | { | |
40055951 | 1056 | const char *fmt1 = NULL, *fmt2 = NULL, *cache, *filename1, *filename2; |
26f54e9a | 1057 | BlockBackend *blk1, *blk2; |
d14ed18c MR |
1058 | BlockDriverState *bs1, *bs2; |
1059 | int64_t total_sectors1, total_sectors2; | |
1060 | uint8_t *buf1 = NULL, *buf2 = NULL; | |
1061 | int pnum1, pnum2; | |
1062 | int allocated1, allocated2; | |
1063 | int ret = 0; /* return value - 0 Ident, 1 Different, >1 Error */ | |
1064 | bool progress = false, quiet = false, strict = false; | |
40055951 | 1065 | int flags; |
d14ed18c MR |
1066 | int64_t total_sectors; |
1067 | int64_t sector_num = 0; | |
1068 | int64_t nb_sectors; | |
1069 | int c, pnum; | |
d14ed18c MR |
1070 | uint64_t progress_base; |
1071 | ||
40055951 | 1072 | cache = BDRV_DEFAULT_CACHE; |
d14ed18c | 1073 | for (;;) { |
40055951 | 1074 | c = getopt(argc, argv, "hf:F:T:pqs"); |
d14ed18c MR |
1075 | if (c == -1) { |
1076 | break; | |
1077 | } | |
1078 | switch (c) { | |
1079 | case '?': | |
1080 | case 'h': | |
1081 | help(); | |
1082 | break; | |
1083 | case 'f': | |
1084 | fmt1 = optarg; | |
1085 | break; | |
1086 | case 'F': | |
1087 | fmt2 = optarg; | |
1088 | break; | |
40055951 HR |
1089 | case 'T': |
1090 | cache = optarg; | |
1091 | break; | |
d14ed18c MR |
1092 | case 'p': |
1093 | progress = true; | |
1094 | break; | |
1095 | case 'q': | |
1096 | quiet = true; | |
1097 | break; | |
1098 | case 's': | |
1099 | strict = true; | |
1100 | break; | |
1101 | } | |
1102 | } | |
1103 | ||
1104 | /* Progress is not shown in Quiet mode */ | |
1105 | if (quiet) { | |
1106 | progress = false; | |
1107 | } | |
1108 | ||
1109 | ||
fc11eb26 | 1110 | if (optind != argc - 2) { |
ac1307ab | 1111 | error_exit("Expecting two image file names"); |
d14ed18c MR |
1112 | } |
1113 | filename1 = argv[optind++]; | |
1114 | filename2 = argv[optind++]; | |
1115 | ||
cbda016d SH |
1116 | /* Initialize before goto out */ |
1117 | qemu_progress_init(progress, 2.0); | |
1118 | ||
40055951 HR |
1119 | flags = BDRV_O_FLAGS; |
1120 | ret = bdrv_parse_cache_flags(cache, &flags); | |
1121 | if (ret < 0) { | |
1122 | error_report("Invalid source cache option: %s", cache); | |
1123 | ret = 2; | |
1124 | goto out3; | |
1125 | } | |
1126 | ||
7e7d56d9 MA |
1127 | blk1 = img_open("image_1", filename1, fmt1, flags, true, quiet); |
1128 | if (!blk1) { | |
d14ed18c MR |
1129 | error_report("Can't open file %s", filename1); |
1130 | ret = 2; | |
7e7d56d9 | 1131 | goto out3; |
d14ed18c | 1132 | } |
7e7d56d9 | 1133 | bs1 = blk_bs(blk1); |
d14ed18c | 1134 | |
7e7d56d9 MA |
1135 | blk2 = img_open("image_2", filename2, fmt2, flags, true, quiet); |
1136 | if (!blk2) { | |
d14ed18c MR |
1137 | error_report("Can't open file %s", filename2); |
1138 | ret = 2; | |
7e7d56d9 | 1139 | goto out2; |
d14ed18c | 1140 | } |
7e7d56d9 | 1141 | bs2 = blk_bs(blk2); |
d14ed18c MR |
1142 | |
1143 | buf1 = qemu_blockalign(bs1, IO_BUF_SIZE); | |
1144 | buf2 = qemu_blockalign(bs2, IO_BUF_SIZE); | |
52bf1e72 MA |
1145 | total_sectors1 = bdrv_nb_sectors(bs1); |
1146 | if (total_sectors1 < 0) { | |
1147 | error_report("Can't get size of %s: %s", | |
1148 | filename1, strerror(-total_sectors1)); | |
1149 | ret = 4; | |
1150 | goto out; | |
1151 | } | |
1152 | total_sectors2 = bdrv_nb_sectors(bs2); | |
1153 | if (total_sectors2 < 0) { | |
1154 | error_report("Can't get size of %s: %s", | |
1155 | filename2, strerror(-total_sectors2)); | |
1156 | ret = 4; | |
1157 | goto out; | |
1158 | } | |
d14ed18c MR |
1159 | total_sectors = MIN(total_sectors1, total_sectors2); |
1160 | progress_base = MAX(total_sectors1, total_sectors2); | |
1161 | ||
1162 | qemu_progress_print(0, 100); | |
1163 | ||
1164 | if (strict && total_sectors1 != total_sectors2) { | |
1165 | ret = 1; | |
1166 | qprintf(quiet, "Strict mode: Image size mismatch!\n"); | |
1167 | goto out; | |
1168 | } | |
1169 | ||
1170 | for (;;) { | |
1171 | nb_sectors = sectors_to_process(total_sectors, sector_num); | |
1172 | if (nb_sectors <= 0) { | |
1173 | break; | |
1174 | } | |
1175 | allocated1 = bdrv_is_allocated_above(bs1, NULL, sector_num, nb_sectors, | |
1176 | &pnum1); | |
1177 | if (allocated1 < 0) { | |
1178 | ret = 3; | |
1179 | error_report("Sector allocation test failed for %s", filename1); | |
1180 | goto out; | |
1181 | } | |
1182 | ||
1183 | allocated2 = bdrv_is_allocated_above(bs2, NULL, sector_num, nb_sectors, | |
1184 | &pnum2); | |
1185 | if (allocated2 < 0) { | |
1186 | ret = 3; | |
1187 | error_report("Sector allocation test failed for %s", filename2); | |
1188 | goto out; | |
1189 | } | |
1190 | nb_sectors = MIN(pnum1, pnum2); | |
1191 | ||
1192 | if (allocated1 == allocated2) { | |
1193 | if (allocated1) { | |
1194 | ret = bdrv_read(bs1, sector_num, buf1, nb_sectors); | |
1195 | if (ret < 0) { | |
1196 | error_report("Error while reading offset %" PRId64 " of %s:" | |
1197 | " %s", sectors_to_bytes(sector_num), filename1, | |
1198 | strerror(-ret)); | |
1199 | ret = 4; | |
1200 | goto out; | |
1201 | } | |
1202 | ret = bdrv_read(bs2, sector_num, buf2, nb_sectors); | |
1203 | if (ret < 0) { | |
1204 | error_report("Error while reading offset %" PRId64 | |
1205 | " of %s: %s", sectors_to_bytes(sector_num), | |
1206 | filename2, strerror(-ret)); | |
1207 | ret = 4; | |
1208 | goto out; | |
1209 | } | |
1210 | ret = compare_sectors(buf1, buf2, nb_sectors, &pnum); | |
1211 | if (ret || pnum != nb_sectors) { | |
d14ed18c MR |
1212 | qprintf(quiet, "Content mismatch at offset %" PRId64 "!\n", |
1213 | sectors_to_bytes( | |
1214 | ret ? sector_num : sector_num + pnum)); | |
36452f12 | 1215 | ret = 1; |
d14ed18c MR |
1216 | goto out; |
1217 | } | |
1218 | } | |
1219 | } else { | |
1220 | if (strict) { | |
1221 | ret = 1; | |
1222 | qprintf(quiet, "Strict mode: Offset %" PRId64 | |
1223 | " allocation mismatch!\n", | |
1224 | sectors_to_bytes(sector_num)); | |
1225 | goto out; | |
1226 | } | |
1227 | ||
1228 | if (allocated1) { | |
1229 | ret = check_empty_sectors(bs1, sector_num, nb_sectors, | |
1230 | filename1, buf1, quiet); | |
1231 | } else { | |
1232 | ret = check_empty_sectors(bs2, sector_num, nb_sectors, | |
1233 | filename2, buf1, quiet); | |
1234 | } | |
1235 | if (ret) { | |
1236 | if (ret < 0) { | |
d14ed18c MR |
1237 | error_report("Error while reading offset %" PRId64 ": %s", |
1238 | sectors_to_bytes(sector_num), strerror(-ret)); | |
36452f12 | 1239 | ret = 4; |
d14ed18c MR |
1240 | } |
1241 | goto out; | |
1242 | } | |
1243 | } | |
1244 | sector_num += nb_sectors; | |
1245 | qemu_progress_print(((float) nb_sectors / progress_base)*100, 100); | |
1246 | } | |
1247 | ||
1248 | if (total_sectors1 != total_sectors2) { | |
1249 | BlockDriverState *bs_over; | |
1250 | int64_t total_sectors_over; | |
1251 | const char *filename_over; | |
1252 | ||
1253 | qprintf(quiet, "Warning: Image size mismatch!\n"); | |
1254 | if (total_sectors1 > total_sectors2) { | |
1255 | total_sectors_over = total_sectors1; | |
1256 | bs_over = bs1; | |
1257 | filename_over = filename1; | |
1258 | } else { | |
1259 | total_sectors_over = total_sectors2; | |
1260 | bs_over = bs2; | |
1261 | filename_over = filename2; | |
1262 | } | |
1263 | ||
1264 | for (;;) { | |
1265 | nb_sectors = sectors_to_process(total_sectors_over, sector_num); | |
1266 | if (nb_sectors <= 0) { | |
1267 | break; | |
1268 | } | |
1269 | ret = bdrv_is_allocated_above(bs_over, NULL, sector_num, | |
1270 | nb_sectors, &pnum); | |
1271 | if (ret < 0) { | |
1272 | ret = 3; | |
1273 | error_report("Sector allocation test failed for %s", | |
1274 | filename_over); | |
1275 | goto out; | |
1276 | ||
1277 | } | |
1278 | nb_sectors = pnum; | |
1279 | if (ret) { | |
1280 | ret = check_empty_sectors(bs_over, sector_num, nb_sectors, | |
1281 | filename_over, buf1, quiet); | |
1282 | if (ret) { | |
1283 | if (ret < 0) { | |
d14ed18c MR |
1284 | error_report("Error while reading offset %" PRId64 |
1285 | " of %s: %s", sectors_to_bytes(sector_num), | |
1286 | filename_over, strerror(-ret)); | |
36452f12 | 1287 | ret = 4; |
d14ed18c MR |
1288 | } |
1289 | goto out; | |
1290 | } | |
1291 | } | |
1292 | sector_num += nb_sectors; | |
1293 | qemu_progress_print(((float) nb_sectors / progress_base)*100, 100); | |
1294 | } | |
1295 | } | |
1296 | ||
1297 | qprintf(quiet, "Images are identical.\n"); | |
1298 | ret = 0; | |
1299 | ||
1300 | out: | |
d14ed18c MR |
1301 | qemu_vfree(buf1); |
1302 | qemu_vfree(buf2); | |
26f54e9a | 1303 | blk_unref(blk2); |
d14ed18c | 1304 | out2: |
26f54e9a | 1305 | blk_unref(blk1); |
d14ed18c MR |
1306 | out3: |
1307 | qemu_progress_end(); | |
1308 | return ret; | |
1309 | } | |
1310 | ||
ea2384d3 FB |
1311 | static int img_convert(int argc, char **argv) |
1312 | { | |
24f833cd | 1313 | int c, n, n1, bs_n, bs_i, compress, cluster_sectors, skip_create; |
13c28af8 | 1314 | int64_t ret = 0; |
40055951 HR |
1315 | int progress = 0, flags, src_flags; |
1316 | const char *fmt, *out_fmt, *cache, *src_cache, *out_baseimg, *out_filename; | |
b50cbabc | 1317 | BlockDriver *drv, *proto_drv; |
26f54e9a | 1318 | BlockBackend **blk = NULL, *out_blk = NULL; |
c2abccec | 1319 | BlockDriverState **bs = NULL, *out_bs = NULL; |
802c3d4c | 1320 | int64_t total_sectors, nb_sectors, sector_num, bs_offset; |
52bf1e72 | 1321 | int64_t *bs_sectors = NULL; |
c2abccec | 1322 | uint8_t * buf = NULL; |
f2521c90 | 1323 | size_t bufsectors = IO_BUF_SIZE / BDRV_SECTOR_SIZE; |
ea2384d3 | 1324 | const uint8_t *buf1; |
faea38e7 | 1325 | BlockDriverInfo bdi; |
83d0521a CL |
1326 | QemuOpts *opts = NULL; |
1327 | QemuOptsList *create_opts = NULL; | |
1328 | const char *out_baseimg_param; | |
efa84d43 | 1329 | char *options = NULL; |
51ef6727 | 1330 | const char *snapshot_name = NULL; |
a22f123c | 1331 | int min_sparse = 8; /* Need at least 4k of zeros for sparse detection */ |
f382d43a | 1332 | bool quiet = false; |
cc84d90f | 1333 | Error *local_err = NULL; |
ef80654d | 1334 | QemuOpts *sn_opts = NULL; |
ea2384d3 FB |
1335 | |
1336 | fmt = NULL; | |
1337 | out_fmt = "raw"; | |
661a0f71 | 1338 | cache = "unsafe"; |
40055951 | 1339 | src_cache = BDRV_DEFAULT_CACHE; |
f58c7b35 | 1340 | out_baseimg = NULL; |
eec77d9e | 1341 | compress = 0; |
b2e10493 | 1342 | skip_create = 0; |
ea2384d3 | 1343 | for(;;) { |
40055951 | 1344 | c = getopt(argc, argv, "hf:O:B:ce6o:s:l:S:pt:T:qn"); |
b8fb60da | 1345 | if (c == -1) { |
ea2384d3 | 1346 | break; |
b8fb60da | 1347 | } |
ea2384d3 | 1348 | switch(c) { |
ef87394c | 1349 | case '?': |
ea2384d3 FB |
1350 | case 'h': |
1351 | help(); | |
1352 | break; | |
1353 | case 'f': | |
1354 | fmt = optarg; | |
1355 | break; | |
1356 | case 'O': | |
1357 | out_fmt = optarg; | |
1358 | break; | |
f58c7b35 TS |
1359 | case 'B': |
1360 | out_baseimg = optarg; | |
1361 | break; | |
ea2384d3 | 1362 | case 'c': |
eec77d9e | 1363 | compress = 1; |
ea2384d3 FB |
1364 | break; |
1365 | case 'e': | |
9d42e15d | 1366 | error_report("option -e is deprecated, please use \'-o " |
eec77d9e | 1367 | "encryption\' instead!"); |
2dc8328b | 1368 | ret = -1; |
64bb01aa | 1369 | goto fail_getopt; |
ec36ba14 | 1370 | case '6': |
9d42e15d | 1371 | error_report("option -6 is deprecated, please use \'-o " |
eec77d9e | 1372 | "compat6\' instead!"); |
2dc8328b | 1373 | ret = -1; |
64bb01aa | 1374 | goto fail_getopt; |
efa84d43 | 1375 | case 'o': |
2dc8328b KW |
1376 | if (!is_valid_option_list(optarg)) { |
1377 | error_report("Invalid option list: %s", optarg); | |
1378 | ret = -1; | |
64bb01aa | 1379 | goto fail_getopt; |
2dc8328b KW |
1380 | } |
1381 | if (!options) { | |
1382 | options = g_strdup(optarg); | |
1383 | } else { | |
1384 | char *old_options = options; | |
1385 | options = g_strdup_printf("%s,%s", options, optarg); | |
1386 | g_free(old_options); | |
1387 | } | |
efa84d43 | 1388 | break; |
51ef6727 | 1389 | case 's': |
1390 | snapshot_name = optarg; | |
1391 | break; | |
ef80654d WX |
1392 | case 'l': |
1393 | if (strstart(optarg, SNAPSHOT_OPT_BASE, NULL)) { | |
1394 | sn_opts = qemu_opts_parse(&internal_snapshot_opts, optarg, 0); | |
1395 | if (!sn_opts) { | |
1396 | error_report("Failed in parsing snapshot param '%s'", | |
1397 | optarg); | |
2dc8328b | 1398 | ret = -1; |
64bb01aa | 1399 | goto fail_getopt; |
ef80654d WX |
1400 | } |
1401 | } else { | |
1402 | snapshot_name = optarg; | |
1403 | } | |
1404 | break; | |
a22f123c KW |
1405 | case 'S': |
1406 | { | |
1407 | int64_t sval; | |
e36b3695 MA |
1408 | char *end; |
1409 | sval = strtosz_suffix(optarg, &end, STRTOSZ_DEFSUFFIX_B); | |
1410 | if (sval < 0 || *end) { | |
a22f123c | 1411 | error_report("Invalid minimum zero buffer size for sparse output specified"); |
2dc8328b | 1412 | ret = -1; |
64bb01aa | 1413 | goto fail_getopt; |
a22f123c KW |
1414 | } |
1415 | ||
1416 | min_sparse = sval / BDRV_SECTOR_SIZE; | |
1417 | break; | |
1418 | } | |
6b837bc4 JS |
1419 | case 'p': |
1420 | progress = 1; | |
1421 | break; | |
661a0f71 FS |
1422 | case 't': |
1423 | cache = optarg; | |
1424 | break; | |
40055951 HR |
1425 | case 'T': |
1426 | src_cache = optarg; | |
1427 | break; | |
f382d43a MR |
1428 | case 'q': |
1429 | quiet = true; | |
1430 | break; | |
b2e10493 AD |
1431 | case 'n': |
1432 | skip_create = 1; | |
1433 | break; | |
ea2384d3 FB |
1434 | } |
1435 | } | |
3b46e624 | 1436 | |
64bb01aa | 1437 | /* Initialize before goto out */ |
f382d43a MR |
1438 | if (quiet) { |
1439 | progress = 0; | |
1440 | } | |
64bb01aa KW |
1441 | qemu_progress_init(progress, 1.0); |
1442 | ||
f382d43a | 1443 | |
926c2d23 | 1444 | bs_n = argc - optind - 1; |
a283cb6e | 1445 | out_filename = bs_n >= 1 ? argv[argc - 1] : NULL; |
f58c7b35 | 1446 | |
2dc8328b | 1447 | if (options && has_help_option(options)) { |
4ac8aacd JS |
1448 | ret = print_block_option_help(out_filename, out_fmt); |
1449 | goto out; | |
1450 | } | |
1451 | ||
a283cb6e | 1452 | if (bs_n < 1) { |
ac1307ab | 1453 | error_exit("Must specify image file name"); |
a283cb6e KW |
1454 | } |
1455 | ||
1456 | ||
c2abccec | 1457 | if (bs_n > 1 && out_baseimg) { |
15654a6d JS |
1458 | error_report("-B makes no sense when concatenating multiple input " |
1459 | "images"); | |
31ca34b8 JS |
1460 | ret = -1; |
1461 | goto out; | |
c2abccec | 1462 | } |
f8111c24 | 1463 | |
40055951 HR |
1464 | src_flags = BDRV_O_FLAGS; |
1465 | ret = bdrv_parse_cache_flags(src_cache, &src_flags); | |
1466 | if (ret < 0) { | |
1467 | error_report("Invalid source cache option: %s", src_cache); | |
1468 | goto out; | |
1469 | } | |
1470 | ||
6b837bc4 JS |
1471 | qemu_progress_print(0, 100); |
1472 | ||
26f54e9a | 1473 | blk = g_new0(BlockBackend *, bs_n); |
d739f1c4 | 1474 | bs = g_new0(BlockDriverState *, bs_n); |
52bf1e72 | 1475 | bs_sectors = g_new(int64_t, bs_n); |
926c2d23 AZ |
1476 | |
1477 | total_sectors = 0; | |
1478 | for (bs_i = 0; bs_i < bs_n; bs_i++) { | |
9aebf3b8 | 1479 | char *id = bs_n > 1 ? g_strdup_printf("source_%d", bs_i) |
9ffe3332 | 1480 | : g_strdup("source"); |
7e7d56d9 MA |
1481 | blk[bs_i] = img_open(id, argv[optind + bs_i], fmt, src_flags, |
1482 | true, quiet); | |
9ffe3332 | 1483 | g_free(id); |
7e7d56d9 | 1484 | if (!blk[bs_i]) { |
15654a6d | 1485 | error_report("Could not open '%s'", argv[optind + bs_i]); |
c2abccec MK |
1486 | ret = -1; |
1487 | goto out; | |
1488 | } | |
7e7d56d9 | 1489 | bs[bs_i] = blk_bs(blk[bs_i]); |
52bf1e72 MA |
1490 | bs_sectors[bs_i] = bdrv_nb_sectors(bs[bs_i]); |
1491 | if (bs_sectors[bs_i] < 0) { | |
1492 | error_report("Could not get size of %s: %s", | |
1493 | argv[optind + bs_i], strerror(-bs_sectors[bs_i])); | |
1494 | ret = -1; | |
1495 | goto out; | |
1496 | } | |
d739f1c4 | 1497 | total_sectors += bs_sectors[bs_i]; |
926c2d23 | 1498 | } |
ea2384d3 | 1499 | |
ef80654d WX |
1500 | if (sn_opts) { |
1501 | ret = bdrv_snapshot_load_tmp(bs[0], | |
1502 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_ID), | |
1503 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_NAME), | |
1504 | &local_err); | |
1505 | } else if (snapshot_name != NULL) { | |
51ef6727 | 1506 | if (bs_n > 1) { |
6daf194d | 1507 | error_report("No support for concatenating multiple snapshot"); |
51ef6727 | 1508 | ret = -1; |
1509 | goto out; | |
1510 | } | |
7b4c4781 WX |
1511 | |
1512 | bdrv_snapshot_load_tmp_by_id_or_name(bs[0], snapshot_name, &local_err); | |
ef80654d | 1513 | } |
84d18f06 | 1514 | if (local_err) { |
ef80654d WX |
1515 | error_report("Failed to load snapshot: %s", |
1516 | error_get_pretty(local_err)); | |
1517 | error_free(local_err); | |
1518 | ret = -1; | |
1519 | goto out; | |
51ef6727 | 1520 | } |
1521 | ||
efa84d43 | 1522 | /* Find driver and parse its options */ |
ea2384d3 | 1523 | drv = bdrv_find_format(out_fmt); |
c2abccec | 1524 | if (!drv) { |
15654a6d | 1525 | error_report("Unknown file format '%s'", out_fmt); |
c2abccec MK |
1526 | ret = -1; |
1527 | goto out; | |
1528 | } | |
efa84d43 | 1529 | |
98289620 | 1530 | proto_drv = bdrv_find_protocol(out_filename, true); |
c2abccec | 1531 | if (!proto_drv) { |
15654a6d | 1532 | error_report("Unknown protocol '%s'", out_filename); |
c2abccec MK |
1533 | ret = -1; |
1534 | goto out; | |
1535 | } | |
b50cbabc | 1536 | |
c282e1fd CL |
1537 | create_opts = qemu_opts_append(create_opts, drv->create_opts); |
1538 | create_opts = qemu_opts_append(create_opts, proto_drv->create_opts); | |
db08adf5 | 1539 | |
83d0521a CL |
1540 | opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); |
1541 | if (options && qemu_opts_do_parse(opts, options, NULL)) { | |
1542 | error_report("Invalid options for file format '%s'", out_fmt); | |
1543 | ret = -1; | |
1544 | goto out; | |
efa84d43 KW |
1545 | } |
1546 | ||
83d0521a CL |
1547 | qemu_opt_set_number(opts, BLOCK_OPT_SIZE, total_sectors * 512); |
1548 | ret = add_old_style_options(out_fmt, opts, out_baseimg, NULL); | |
c2abccec MK |
1549 | if (ret < 0) { |
1550 | goto out; | |
1551 | } | |
efa84d43 | 1552 | |
a18953fb | 1553 | /* Get backing file name if -o backing_file was used */ |
83d0521a | 1554 | out_baseimg_param = qemu_opt_get(opts, BLOCK_OPT_BACKING_FILE); |
a18953fb | 1555 | if (out_baseimg_param) { |
83d0521a | 1556 | out_baseimg = out_baseimg_param; |
a18953fb KW |
1557 | } |
1558 | ||
efa84d43 | 1559 | /* Check if compression is supported */ |
eec77d9e | 1560 | if (compress) { |
83d0521a CL |
1561 | bool encryption = |
1562 | qemu_opt_get_bool(opts, BLOCK_OPT_ENCRYPT, false); | |
1563 | const char *preallocation = | |
1564 | qemu_opt_get(opts, BLOCK_OPT_PREALLOC); | |
efa84d43 KW |
1565 | |
1566 | if (!drv->bdrv_write_compressed) { | |
15654a6d | 1567 | error_report("Compression not supported for this file format"); |
c2abccec MK |
1568 | ret = -1; |
1569 | goto out; | |
efa84d43 KW |
1570 | } |
1571 | ||
83d0521a | 1572 | if (encryption) { |
15654a6d JS |
1573 | error_report("Compression and encryption not supported at " |
1574 | "the same time"); | |
c2abccec MK |
1575 | ret = -1; |
1576 | goto out; | |
efa84d43 | 1577 | } |
41521fa4 | 1578 | |
83d0521a CL |
1579 | if (preallocation |
1580 | && strcmp(preallocation, "off")) | |
41521fa4 KW |
1581 | { |
1582 | error_report("Compression and preallocation not supported at " | |
1583 | "the same time"); | |
1584 | ret = -1; | |
1585 | goto out; | |
1586 | } | |
efa84d43 KW |
1587 | } |
1588 | ||
b2e10493 AD |
1589 | if (!skip_create) { |
1590 | /* Create the new image */ | |
c282e1fd | 1591 | ret = bdrv_create(drv, out_filename, opts, &local_err); |
b2e10493 | 1592 | if (ret < 0) { |
cc84d90f HR |
1593 | error_report("%s: error while converting %s: %s", |
1594 | out_filename, out_fmt, error_get_pretty(local_err)); | |
1595 | error_free(local_err); | |
b2e10493 | 1596 | goto out; |
ea2384d3 FB |
1597 | } |
1598 | } | |
3b46e624 | 1599 | |
5a37b60a | 1600 | flags = min_sparse ? (BDRV_O_RDWR | BDRV_O_UNMAP) : BDRV_O_RDWR; |
c3993cdc | 1601 | ret = bdrv_parse_cache_flags(cache, &flags); |
661a0f71 FS |
1602 | if (ret < 0) { |
1603 | error_report("Invalid cache option: %s", cache); | |
bb9cd2ee | 1604 | goto out; |
661a0f71 FS |
1605 | } |
1606 | ||
7e7d56d9 MA |
1607 | out_blk = img_open("target", out_filename, out_fmt, flags, true, quiet); |
1608 | if (!out_blk) { | |
c2abccec MK |
1609 | ret = -1; |
1610 | goto out; | |
1611 | } | |
7e7d56d9 | 1612 | out_bs = blk_bs(out_blk); |
ea2384d3 | 1613 | |
926c2d23 AZ |
1614 | bs_i = 0; |
1615 | bs_offset = 0; | |
f2521c90 PL |
1616 | |
1617 | /* increase bufsectors from the default 4096 (2M) if opt_transfer_length | |
1618 | * or discard_alignment of the out_bs is greater. Limit to 32768 (16MB) | |
1619 | * as maximum. */ | |
1620 | bufsectors = MIN(32768, | |
1621 | MAX(bufsectors, MAX(out_bs->bl.opt_transfer_length, | |
1622 | out_bs->bl.discard_alignment)) | |
1623 | ); | |
1624 | ||
1625 | buf = qemu_blockalign(out_bs, bufsectors * BDRV_SECTOR_SIZE); | |
926c2d23 | 1626 | |
b2e10493 | 1627 | if (skip_create) { |
43716fa8 MA |
1628 | int64_t output_sectors = bdrv_nb_sectors(out_bs); |
1629 | if (output_sectors < 0) { | |
b2e10493 | 1630 | error_report("unable to get output image length: %s\n", |
43716fa8 | 1631 | strerror(-output_sectors)); |
b2e10493 AD |
1632 | ret = -1; |
1633 | goto out; | |
43716fa8 | 1634 | } else if (output_sectors < total_sectors) { |
b2e10493 AD |
1635 | error_report("output file is smaller than input file"); |
1636 | ret = -1; | |
1637 | goto out; | |
1638 | } | |
1639 | } | |
1640 | ||
24f833cd PL |
1641 | cluster_sectors = 0; |
1642 | ret = bdrv_get_info(out_bs, &bdi); | |
1643 | if (ret < 0) { | |
1644 | if (compress) { | |
15654a6d | 1645 | error_report("could not get block driver info"); |
c2abccec MK |
1646 | goto out; |
1647 | } | |
24f833cd | 1648 | } else { |
85f49cad | 1649 | compress = compress || bdi.needs_compressed_writes; |
24f833cd PL |
1650 | cluster_sectors = bdi.cluster_size / BDRV_SECTOR_SIZE; |
1651 | } | |
1652 | ||
1653 | if (compress) { | |
1654 | if (cluster_sectors <= 0 || cluster_sectors > bufsectors) { | |
15654a6d | 1655 | error_report("invalid cluster size"); |
c2abccec MK |
1656 | ret = -1; |
1657 | goto out; | |
1658 | } | |
ea2384d3 | 1659 | sector_num = 0; |
6b837bc4 JS |
1660 | |
1661 | nb_sectors = total_sectors; | |
6b837bc4 | 1662 | |
ea2384d3 | 1663 | for(;;) { |
926c2d23 AZ |
1664 | int64_t bs_num; |
1665 | int remainder; | |
1666 | uint8_t *buf2; | |
1667 | ||
ea2384d3 FB |
1668 | nb_sectors = total_sectors - sector_num; |
1669 | if (nb_sectors <= 0) | |
1670 | break; | |
1671 | if (nb_sectors >= cluster_sectors) | |
1672 | n = cluster_sectors; | |
1673 | else | |
1674 | n = nb_sectors; | |
926c2d23 AZ |
1675 | |
1676 | bs_num = sector_num - bs_offset; | |
1677 | assert (bs_num >= 0); | |
1678 | remainder = n; | |
1679 | buf2 = buf; | |
1680 | while (remainder > 0) { | |
1681 | int nlow; | |
d739f1c4 MA |
1682 | while (bs_num == bs_sectors[bs_i]) { |
1683 | bs_offset += bs_sectors[bs_i]; | |
926c2d23 AZ |
1684 | bs_i++; |
1685 | assert (bs_i < bs_n); | |
926c2d23 | 1686 | bs_num = 0; |
0bfcd599 BS |
1687 | /* printf("changing part: sector_num=%" PRId64 ", " |
1688 | "bs_i=%d, bs_offset=%" PRId64 ", bs_sectors=%" PRId64 | |
d739f1c4 | 1689 | "\n", sector_num, bs_i, bs_offset, bs_sectors[bs_i]); */ |
926c2d23 | 1690 | } |
d739f1c4 | 1691 | assert (bs_num < bs_sectors[bs_i]); |
926c2d23 | 1692 | |
d739f1c4 MA |
1693 | nlow = remainder > bs_sectors[bs_i] - bs_num |
1694 | ? bs_sectors[bs_i] - bs_num : remainder; | |
926c2d23 | 1695 | |
c2abccec MK |
1696 | ret = bdrv_read(bs[bs_i], bs_num, buf2, nlow); |
1697 | if (ret < 0) { | |
3fba9d81 SH |
1698 | error_report("error while reading sector %" PRId64 ": %s", |
1699 | bs_num, strerror(-ret)); | |
c2abccec MK |
1700 | goto out; |
1701 | } | |
926c2d23 AZ |
1702 | |
1703 | buf2 += nlow * 512; | |
1704 | bs_num += nlow; | |
1705 | ||
1706 | remainder -= nlow; | |
1707 | } | |
1708 | assert (remainder == 0); | |
1709 | ||
54f106d5 SH |
1710 | if (!buffer_is_zero(buf, n * BDRV_SECTOR_SIZE)) { |
1711 | ret = bdrv_write_compressed(out_bs, sector_num, buf, n); | |
c2abccec | 1712 | if (ret != 0) { |
3fba9d81 SH |
1713 | error_report("error while compressing sector %" PRId64 |
1714 | ": %s", sector_num, strerror(-ret)); | |
c2abccec MK |
1715 | goto out; |
1716 | } | |
ea2384d3 FB |
1717 | } |
1718 | sector_num += n; | |
13c28af8 | 1719 | qemu_progress_print(100.0 * sector_num / total_sectors, 0); |
ea2384d3 | 1720 | } |
faea38e7 FB |
1721 | /* signal EOF to align */ |
1722 | bdrv_write_compressed(out_bs, 0, NULL, 0); | |
ea2384d3 | 1723 | } else { |
802c3d4c PL |
1724 | int64_t sectors_to_read, sectors_read, sector_num_next_status; |
1725 | bool count_allocated_sectors; | |
11b6699a | 1726 | int has_zero_init = min_sparse ? bdrv_has_zero_init(out_bs) : 0; |
f2feebbd | 1727 | |
5a37b60a PL |
1728 | if (!has_zero_init && bdrv_can_write_zeroes_with_unmap(out_bs)) { |
1729 | ret = bdrv_make_zero(out_bs, BDRV_REQ_MAY_UNMAP); | |
1730 | if (ret < 0) { | |
1731 | goto out; | |
1732 | } | |
1733 | has_zero_init = 1; | |
1734 | } | |
1735 | ||
802c3d4c PL |
1736 | sectors_to_read = total_sectors; |
1737 | count_allocated_sectors = progress && (out_baseimg || has_zero_init); | |
1738 | restart: | |
f58c7b35 | 1739 | sector_num = 0; // total number of sectors converted so far |
802c3d4c PL |
1740 | sectors_read = 0; |
1741 | sector_num_next_status = 0; | |
6b837bc4 | 1742 | |
ea2384d3 FB |
1743 | for(;;) { |
1744 | nb_sectors = total_sectors - sector_num; | |
b8fb60da | 1745 | if (nb_sectors <= 0) { |
802c3d4c PL |
1746 | if (count_allocated_sectors) { |
1747 | sectors_to_read = sectors_read; | |
1748 | count_allocated_sectors = false; | |
1749 | goto restart; | |
1750 | } | |
13c28af8 | 1751 | ret = 0; |
ea2384d3 | 1752 | break; |
b8fb60da | 1753 | } |
926c2d23 | 1754 | |
d739f1c4 MA |
1755 | while (sector_num - bs_offset >= bs_sectors[bs_i]) { |
1756 | bs_offset += bs_sectors[bs_i]; | |
926c2d23 AZ |
1757 | bs_i ++; |
1758 | assert (bs_i < bs_n); | |
0bfcd599 BS |
1759 | /* printf("changing part: sector_num=%" PRId64 ", bs_i=%d, " |
1760 | "bs_offset=%" PRId64 ", bs_sectors=%" PRId64 "\n", | |
d739f1c4 | 1761 | sector_num, bs_i, bs_offset, bs_sectors[bs_i]); */ |
926c2d23 AZ |
1762 | } |
1763 | ||
13c28af8 PL |
1764 | if ((out_baseimg || has_zero_init) && |
1765 | sector_num >= sector_num_next_status) { | |
1766 | n = nb_sectors > INT_MAX ? INT_MAX : nb_sectors; | |
1767 | ret = bdrv_get_block_status(bs[bs_i], sector_num - bs_offset, | |
1768 | n, &n1); | |
e4a86f88 | 1769 | if (ret < 0) { |
13c28af8 PL |
1770 | error_report("error while reading block status of sector %" |
1771 | PRId64 ": %s", sector_num - bs_offset, | |
1772 | strerror(-ret)); | |
e4a86f88 PB |
1773 | goto out; |
1774 | } | |
13c28af8 PL |
1775 | /* If the output image is zero initialized, we are not working |
1776 | * on a shared base and the input is zero we can skip the next | |
1777 | * n1 sectors */ | |
1778 | if (has_zero_init && !out_baseimg && (ret & BDRV_BLOCK_ZERO)) { | |
e4a86f88 PB |
1779 | sector_num += n1; |
1780 | continue; | |
93c65b47 | 1781 | } |
13c28af8 PL |
1782 | /* If the output image is being created as a copy on write |
1783 | * image, assume that sectors which are unallocated in the | |
1784 | * input image are present in both the output's and input's | |
1785 | * base images (no need to copy them). */ | |
1786 | if (out_baseimg) { | |
1787 | if (!(ret & BDRV_BLOCK_DATA)) { | |
1788 | sector_num += n1; | |
1789 | continue; | |
1790 | } | |
1791 | /* The next 'n1' sectors are allocated in the input image. | |
1792 | * Copy only those as they may be followed by unallocated | |
1793 | * sectors. */ | |
1794 | nb_sectors = n1; | |
1795 | } | |
1796 | /* avoid redundant callouts to get_block_status */ | |
1797 | sector_num_next_status = sector_num + n1; | |
f58c7b35 TS |
1798 | } |
1799 | ||
f2521c90 | 1800 | n = MIN(nb_sectors, bufsectors); |
24f833cd PL |
1801 | |
1802 | /* round down request length to an aligned sector, but | |
1803 | * do not bother doing this on short requests. They happen | |
1804 | * when we found an all-zero area, and the next sector to | |
1805 | * write will not be sector_num + n. */ | |
1806 | if (cluster_sectors > 0 && n >= cluster_sectors) { | |
1807 | int64_t next_aligned_sector = (sector_num + n); | |
1808 | next_aligned_sector -= next_aligned_sector % cluster_sectors; | |
1809 | if (sector_num + n > next_aligned_sector) { | |
1810 | n = next_aligned_sector - sector_num; | |
1811 | } | |
1812 | } | |
1813 | ||
d739f1c4 | 1814 | n = MIN(n, bs_sectors[bs_i] - (sector_num - bs_offset)); |
13c28af8 | 1815 | |
802c3d4c PL |
1816 | sectors_read += n; |
1817 | if (count_allocated_sectors) { | |
1818 | sector_num += n; | |
1819 | continue; | |
1820 | } | |
1821 | ||
1822 | n1 = n; | |
c2abccec MK |
1823 | ret = bdrv_read(bs[bs_i], sector_num - bs_offset, buf, n); |
1824 | if (ret < 0) { | |
3fba9d81 SH |
1825 | error_report("error while reading sector %" PRId64 ": %s", |
1826 | sector_num - bs_offset, strerror(-ret)); | |
c2abccec MK |
1827 | goto out; |
1828 | } | |
ea2384d3 FB |
1829 | /* NOTE: at the same time we convert, we do not write zero |
1830 | sectors to have a chance to compress the image. Ideally, we | |
1831 | should add a specific call to have the info to go faster */ | |
1832 | buf1 = buf; | |
1833 | while (n > 0) { | |
11212d8f | 1834 | if (!has_zero_init || |
a22f123c | 1835 | is_allocated_sectors_min(buf1, n, &n1, min_sparse)) { |
c2abccec MK |
1836 | ret = bdrv_write(out_bs, sector_num, buf1, n1); |
1837 | if (ret < 0) { | |
3fba9d81 SH |
1838 | error_report("error while writing sector %" PRId64 |
1839 | ": %s", sector_num, strerror(-ret)); | |
c2abccec MK |
1840 | goto out; |
1841 | } | |
ea2384d3 FB |
1842 | } |
1843 | sector_num += n1; | |
1844 | n -= n1; | |
1845 | buf1 += n1 * 512; | |
1846 | } | |
802c3d4c | 1847 | qemu_progress_print(100.0 * sectors_read / sectors_to_read, 0); |
ea2384d3 FB |
1848 | } |
1849 | } | |
c2abccec | 1850 | out: |
13c28af8 PL |
1851 | if (!ret) { |
1852 | qemu_progress_print(100, 0); | |
1853 | } | |
6b837bc4 | 1854 | qemu_progress_end(); |
83d0521a CL |
1855 | qemu_opts_del(opts); |
1856 | qemu_opts_free(create_opts); | |
bb1c0597 | 1857 | qemu_vfree(buf); |
fbf28a43 | 1858 | qemu_opts_del(sn_opts); |
26f54e9a | 1859 | blk_unref(out_blk); |
9ba10c95 | 1860 | g_free(bs); |
26f54e9a MA |
1861 | if (blk) { |
1862 | for (bs_i = 0; bs_i < bs_n; bs_i++) { | |
1863 | blk_unref(blk[bs_i]); | |
1864 | } | |
1865 | g_free(blk); | |
1866 | } | |
d739f1c4 | 1867 | g_free(bs_sectors); |
64bb01aa KW |
1868 | fail_getopt: |
1869 | g_free(options); | |
1870 | ||
c2abccec MK |
1871 | if (ret) { |
1872 | return 1; | |
1873 | } | |
ea2384d3 FB |
1874 | return 0; |
1875 | } | |
1876 | ||
57d1a2b6 | 1877 | |
faea38e7 FB |
1878 | static void dump_snapshots(BlockDriverState *bs) |
1879 | { | |
1880 | QEMUSnapshotInfo *sn_tab, *sn; | |
1881 | int nb_sns, i; | |
faea38e7 FB |
1882 | |
1883 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
1884 | if (nb_sns <= 0) | |
1885 | return; | |
1886 | printf("Snapshot list:\n"); | |
5b917044 WX |
1887 | bdrv_snapshot_dump(fprintf, stdout, NULL); |
1888 | printf("\n"); | |
faea38e7 FB |
1889 | for(i = 0; i < nb_sns; i++) { |
1890 | sn = &sn_tab[i]; | |
5b917044 WX |
1891 | bdrv_snapshot_dump(fprintf, stdout, sn); |
1892 | printf("\n"); | |
faea38e7 | 1893 | } |
7267c094 | 1894 | g_free(sn_tab); |
faea38e7 FB |
1895 | } |
1896 | ||
9699bf0d SH |
1897 | static void dump_json_image_info_list(ImageInfoList *list) |
1898 | { | |
4399c438 | 1899 | Error *local_err = NULL; |
9699bf0d SH |
1900 | QString *str; |
1901 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
1902 | QObject *obj; | |
1903 | visit_type_ImageInfoList(qmp_output_get_visitor(ov), | |
4399c438 | 1904 | &list, NULL, &local_err); |
9699bf0d SH |
1905 | obj = qmp_output_get_qobject(ov); |
1906 | str = qobject_to_json_pretty(obj); | |
1907 | assert(str != NULL); | |
1908 | printf("%s\n", qstring_get_str(str)); | |
1909 | qobject_decref(obj); | |
1910 | qmp_output_visitor_cleanup(ov); | |
1911 | QDECREF(str); | |
1912 | } | |
1913 | ||
c054b3fd BC |
1914 | static void dump_json_image_info(ImageInfo *info) |
1915 | { | |
4399c438 | 1916 | Error *local_err = NULL; |
c054b3fd BC |
1917 | QString *str; |
1918 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
1919 | QObject *obj; | |
1920 | visit_type_ImageInfo(qmp_output_get_visitor(ov), | |
4399c438 | 1921 | &info, NULL, &local_err); |
c054b3fd BC |
1922 | obj = qmp_output_get_qobject(ov); |
1923 | str = qobject_to_json_pretty(obj); | |
1924 | assert(str != NULL); | |
1925 | printf("%s\n", qstring_get_str(str)); | |
1926 | qobject_decref(obj); | |
1927 | qmp_output_visitor_cleanup(ov); | |
1928 | QDECREF(str); | |
1929 | } | |
1930 | ||
9699bf0d SH |
1931 | static void dump_human_image_info_list(ImageInfoList *list) |
1932 | { | |
1933 | ImageInfoList *elem; | |
1934 | bool delim = false; | |
1935 | ||
1936 | for (elem = list; elem; elem = elem->next) { | |
1937 | if (delim) { | |
1938 | printf("\n"); | |
1939 | } | |
1940 | delim = true; | |
1941 | ||
5b917044 | 1942 | bdrv_image_info_dump(fprintf, stdout, elem->value); |
9699bf0d SH |
1943 | } |
1944 | } | |
1945 | ||
1946 | static gboolean str_equal_func(gconstpointer a, gconstpointer b) | |
1947 | { | |
1948 | return strcmp(a, b) == 0; | |
1949 | } | |
1950 | ||
1951 | /** | |
1952 | * Open an image file chain and return an ImageInfoList | |
1953 | * | |
1954 | * @filename: topmost image filename | |
1955 | * @fmt: topmost image format (may be NULL to autodetect) | |
1956 | * @chain: true - enumerate entire backing file chain | |
1957 | * false - only topmost image file | |
1958 | * | |
1959 | * Returns a list of ImageInfo objects or NULL if there was an error opening an | |
1960 | * image file. If there was an error a message will have been printed to | |
1961 | * stderr. | |
1962 | */ | |
1963 | static ImageInfoList *collect_image_info_list(const char *filename, | |
1964 | const char *fmt, | |
1965 | bool chain) | |
1966 | { | |
1967 | ImageInfoList *head = NULL; | |
1968 | ImageInfoList **last = &head; | |
1969 | GHashTable *filenames; | |
43526ec8 | 1970 | Error *err = NULL; |
9699bf0d SH |
1971 | |
1972 | filenames = g_hash_table_new_full(g_str_hash, str_equal_func, NULL, NULL); | |
1973 | ||
1974 | while (filename) { | |
26f54e9a | 1975 | BlockBackend *blk; |
9699bf0d SH |
1976 | BlockDriverState *bs; |
1977 | ImageInfo *info; | |
1978 | ImageInfoList *elem; | |
1979 | ||
1980 | if (g_hash_table_lookup_extended(filenames, filename, NULL, NULL)) { | |
1981 | error_report("Backing file '%s' creates an infinite loop.", | |
1982 | filename); | |
1983 | goto err; | |
1984 | } | |
1985 | g_hash_table_insert(filenames, (gpointer)filename, NULL); | |
1986 | ||
7e7d56d9 MA |
1987 | blk = img_open("image", filename, fmt, |
1988 | BDRV_O_FLAGS | BDRV_O_NO_BACKING, false, false); | |
1989 | if (!blk) { | |
9699bf0d SH |
1990 | goto err; |
1991 | } | |
7e7d56d9 | 1992 | bs = blk_bs(blk); |
9699bf0d | 1993 | |
43526ec8 | 1994 | bdrv_query_image_info(bs, &info, &err); |
84d18f06 | 1995 | if (err) { |
43526ec8 WX |
1996 | error_report("%s", error_get_pretty(err)); |
1997 | error_free(err); | |
26f54e9a | 1998 | blk_unref(blk); |
43526ec8 | 1999 | goto err; |
fb0ed453 | 2000 | } |
9699bf0d SH |
2001 | |
2002 | elem = g_new0(ImageInfoList, 1); | |
2003 | elem->value = info; | |
2004 | *last = elem; | |
2005 | last = &elem->next; | |
2006 | ||
26f54e9a | 2007 | blk_unref(blk); |
9699bf0d SH |
2008 | |
2009 | filename = fmt = NULL; | |
2010 | if (chain) { | |
2011 | if (info->has_full_backing_filename) { | |
2012 | filename = info->full_backing_filename; | |
2013 | } else if (info->has_backing_filename) { | |
2014 | filename = info->backing_filename; | |
2015 | } | |
2016 | if (info->has_backing_filename_format) { | |
2017 | fmt = info->backing_filename_format; | |
2018 | } | |
2019 | } | |
2020 | } | |
2021 | g_hash_table_destroy(filenames); | |
2022 | return head; | |
2023 | ||
2024 | err: | |
2025 | qapi_free_ImageInfoList(head); | |
2026 | g_hash_table_destroy(filenames); | |
2027 | return NULL; | |
2028 | } | |
2029 | ||
c054b3fd BC |
2030 | static int img_info(int argc, char **argv) |
2031 | { | |
2032 | int c; | |
2033 | OutputFormat output_format = OFORMAT_HUMAN; | |
9699bf0d | 2034 | bool chain = false; |
c054b3fd | 2035 | const char *filename, *fmt, *output; |
9699bf0d | 2036 | ImageInfoList *list; |
c054b3fd | 2037 | |
ea2384d3 | 2038 | fmt = NULL; |
c054b3fd | 2039 | output = NULL; |
ea2384d3 | 2040 | for(;;) { |
c054b3fd BC |
2041 | int option_index = 0; |
2042 | static const struct option long_options[] = { | |
2043 | {"help", no_argument, 0, 'h'}, | |
2044 | {"format", required_argument, 0, 'f'}, | |
2045 | {"output", required_argument, 0, OPTION_OUTPUT}, | |
9699bf0d | 2046 | {"backing-chain", no_argument, 0, OPTION_BACKING_CHAIN}, |
c054b3fd BC |
2047 | {0, 0, 0, 0} |
2048 | }; | |
2049 | c = getopt_long(argc, argv, "f:h", | |
2050 | long_options, &option_index); | |
b8fb60da | 2051 | if (c == -1) { |
ea2384d3 | 2052 | break; |
b8fb60da | 2053 | } |
ea2384d3 | 2054 | switch(c) { |
ef87394c | 2055 | case '?': |
ea2384d3 FB |
2056 | case 'h': |
2057 | help(); | |
2058 | break; | |
2059 | case 'f': | |
2060 | fmt = optarg; | |
2061 | break; | |
c054b3fd BC |
2062 | case OPTION_OUTPUT: |
2063 | output = optarg; | |
2064 | break; | |
9699bf0d SH |
2065 | case OPTION_BACKING_CHAIN: |
2066 | chain = true; | |
2067 | break; | |
ea2384d3 FB |
2068 | } |
2069 | } | |
fc11eb26 | 2070 | if (optind != argc - 1) { |
ac1307ab | 2071 | error_exit("Expecting one image file name"); |
b8fb60da | 2072 | } |
ea2384d3 FB |
2073 | filename = argv[optind++]; |
2074 | ||
c054b3fd BC |
2075 | if (output && !strcmp(output, "json")) { |
2076 | output_format = OFORMAT_JSON; | |
2077 | } else if (output && !strcmp(output, "human")) { | |
2078 | output_format = OFORMAT_HUMAN; | |
2079 | } else if (output) { | |
2080 | error_report("--output must be used with human or json as argument."); | |
c2abccec MK |
2081 | return 1; |
2082 | } | |
c054b3fd | 2083 | |
9699bf0d SH |
2084 | list = collect_image_info_list(filename, fmt, chain); |
2085 | if (!list) { | |
c2abccec | 2086 | return 1; |
faea38e7 | 2087 | } |
c054b3fd | 2088 | |
c054b3fd BC |
2089 | switch (output_format) { |
2090 | case OFORMAT_HUMAN: | |
9699bf0d | 2091 | dump_human_image_info_list(list); |
c054b3fd BC |
2092 | break; |
2093 | case OFORMAT_JSON: | |
9699bf0d SH |
2094 | if (chain) { |
2095 | dump_json_image_info_list(list); | |
2096 | } else { | |
2097 | dump_json_image_info(list->value); | |
2098 | } | |
c054b3fd | 2099 | break; |
faea38e7 | 2100 | } |
c054b3fd | 2101 | |
9699bf0d | 2102 | qapi_free_ImageInfoList(list); |
ea2384d3 FB |
2103 | return 0; |
2104 | } | |
2105 | ||
4c93a13b PB |
2106 | |
2107 | typedef struct MapEntry { | |
2108 | int flags; | |
2109 | int depth; | |
2110 | int64_t start; | |
2111 | int64_t length; | |
2112 | int64_t offset; | |
2113 | BlockDriverState *bs; | |
2114 | } MapEntry; | |
2115 | ||
2116 | static void dump_map_entry(OutputFormat output_format, MapEntry *e, | |
2117 | MapEntry *next) | |
2118 | { | |
2119 | switch (output_format) { | |
2120 | case OFORMAT_HUMAN: | |
2121 | if ((e->flags & BDRV_BLOCK_DATA) && | |
2122 | !(e->flags & BDRV_BLOCK_OFFSET_VALID)) { | |
2123 | error_report("File contains external, encrypted or compressed clusters."); | |
2124 | exit(1); | |
2125 | } | |
2126 | if ((e->flags & (BDRV_BLOCK_DATA|BDRV_BLOCK_ZERO)) == BDRV_BLOCK_DATA) { | |
2127 | printf("%#-16"PRIx64"%#-16"PRIx64"%#-16"PRIx64"%s\n", | |
2128 | e->start, e->length, e->offset, e->bs->filename); | |
2129 | } | |
2130 | /* This format ignores the distinction between 0, ZERO and ZERO|DATA. | |
2131 | * Modify the flags here to allow more coalescing. | |
2132 | */ | |
2133 | if (next && | |
2134 | (next->flags & (BDRV_BLOCK_DATA|BDRV_BLOCK_ZERO)) != BDRV_BLOCK_DATA) { | |
2135 | next->flags &= ~BDRV_BLOCK_DATA; | |
2136 | next->flags |= BDRV_BLOCK_ZERO; | |
2137 | } | |
2138 | break; | |
2139 | case OFORMAT_JSON: | |
2140 | printf("%s{ \"start\": %"PRId64", \"length\": %"PRId64", \"depth\": %d," | |
2141 | " \"zero\": %s, \"data\": %s", | |
2142 | (e->start == 0 ? "[" : ",\n"), | |
2143 | e->start, e->length, e->depth, | |
2144 | (e->flags & BDRV_BLOCK_ZERO) ? "true" : "false", | |
2145 | (e->flags & BDRV_BLOCK_DATA) ? "true" : "false"); | |
2146 | if (e->flags & BDRV_BLOCK_OFFSET_VALID) { | |
c745bfb4 | 2147 | printf(", \"offset\": %"PRId64"", e->offset); |
4c93a13b PB |
2148 | } |
2149 | putchar('}'); | |
2150 | ||
2151 | if (!next) { | |
2152 | printf("]\n"); | |
2153 | } | |
2154 | break; | |
2155 | } | |
2156 | } | |
2157 | ||
2158 | static int get_block_status(BlockDriverState *bs, int64_t sector_num, | |
2159 | int nb_sectors, MapEntry *e) | |
2160 | { | |
2161 | int64_t ret; | |
2162 | int depth; | |
2163 | ||
2164 | /* As an optimization, we could cache the current range of unallocated | |
2165 | * clusters in each file of the chain, and avoid querying the same | |
2166 | * range repeatedly. | |
2167 | */ | |
2168 | ||
2169 | depth = 0; | |
2170 | for (;;) { | |
2171 | ret = bdrv_get_block_status(bs, sector_num, nb_sectors, &nb_sectors); | |
2172 | if (ret < 0) { | |
2173 | return ret; | |
2174 | } | |
2175 | assert(nb_sectors); | |
2176 | if (ret & (BDRV_BLOCK_ZERO|BDRV_BLOCK_DATA)) { | |
2177 | break; | |
2178 | } | |
2179 | bs = bs->backing_hd; | |
2180 | if (bs == NULL) { | |
2181 | ret = 0; | |
2182 | break; | |
2183 | } | |
2184 | ||
2185 | depth++; | |
2186 | } | |
2187 | ||
2188 | e->start = sector_num * BDRV_SECTOR_SIZE; | |
2189 | e->length = nb_sectors * BDRV_SECTOR_SIZE; | |
2190 | e->flags = ret & ~BDRV_BLOCK_OFFSET_MASK; | |
2191 | e->offset = ret & BDRV_BLOCK_OFFSET_MASK; | |
2192 | e->depth = depth; | |
2193 | e->bs = bs; | |
2194 | return 0; | |
2195 | } | |
2196 | ||
2197 | static int img_map(int argc, char **argv) | |
2198 | { | |
2199 | int c; | |
2200 | OutputFormat output_format = OFORMAT_HUMAN; | |
26f54e9a | 2201 | BlockBackend *blk; |
4c93a13b PB |
2202 | BlockDriverState *bs; |
2203 | const char *filename, *fmt, *output; | |
2204 | int64_t length; | |
2205 | MapEntry curr = { .length = 0 }, next; | |
2206 | int ret = 0; | |
2207 | ||
2208 | fmt = NULL; | |
2209 | output = NULL; | |
2210 | for (;;) { | |
2211 | int option_index = 0; | |
2212 | static const struct option long_options[] = { | |
2213 | {"help", no_argument, 0, 'h'}, | |
2214 | {"format", required_argument, 0, 'f'}, | |
2215 | {"output", required_argument, 0, OPTION_OUTPUT}, | |
2216 | {0, 0, 0, 0} | |
2217 | }; | |
2218 | c = getopt_long(argc, argv, "f:h", | |
2219 | long_options, &option_index); | |
2220 | if (c == -1) { | |
2221 | break; | |
2222 | } | |
2223 | switch (c) { | |
2224 | case '?': | |
2225 | case 'h': | |
2226 | help(); | |
2227 | break; | |
2228 | case 'f': | |
2229 | fmt = optarg; | |
2230 | break; | |
2231 | case OPTION_OUTPUT: | |
2232 | output = optarg; | |
2233 | break; | |
2234 | } | |
2235 | } | |
ac1307ab FZ |
2236 | if (optind != argc - 1) { |
2237 | error_exit("Expecting one image file name"); | |
4c93a13b | 2238 | } |
ac1307ab | 2239 | filename = argv[optind]; |
4c93a13b PB |
2240 | |
2241 | if (output && !strcmp(output, "json")) { | |
2242 | output_format = OFORMAT_JSON; | |
2243 | } else if (output && !strcmp(output, "human")) { | |
2244 | output_format = OFORMAT_HUMAN; | |
2245 | } else if (output) { | |
2246 | error_report("--output must be used with human or json as argument."); | |
2247 | return 1; | |
2248 | } | |
2249 | ||
7e7d56d9 MA |
2250 | blk = img_open("image", filename, fmt, BDRV_O_FLAGS, true, false); |
2251 | if (!blk) { | |
2252 | return 1; | |
4c93a13b | 2253 | } |
7e7d56d9 | 2254 | bs = blk_bs(blk); |
4c93a13b PB |
2255 | |
2256 | if (output_format == OFORMAT_HUMAN) { | |
2257 | printf("%-16s%-16s%-16s%s\n", "Offset", "Length", "Mapped to", "File"); | |
2258 | } | |
2259 | ||
2260 | length = bdrv_getlength(bs); | |
2261 | while (curr.start + curr.length < length) { | |
2262 | int64_t nsectors_left; | |
2263 | int64_t sector_num; | |
2264 | int n; | |
2265 | ||
2266 | sector_num = (curr.start + curr.length) >> BDRV_SECTOR_BITS; | |
2267 | ||
2268 | /* Probe up to 1 GiB at a time. */ | |
2269 | nsectors_left = DIV_ROUND_UP(length, BDRV_SECTOR_SIZE) - sector_num; | |
2270 | n = MIN(1 << (30 - BDRV_SECTOR_BITS), nsectors_left); | |
2271 | ret = get_block_status(bs, sector_num, n, &next); | |
2272 | ||
2273 | if (ret < 0) { | |
2274 | error_report("Could not read file metadata: %s", strerror(-ret)); | |
2275 | goto out; | |
2276 | } | |
2277 | ||
2278 | if (curr.length != 0 && curr.flags == next.flags && | |
2279 | curr.depth == next.depth && | |
2280 | ((curr.flags & BDRV_BLOCK_OFFSET_VALID) == 0 || | |
2281 | curr.offset + curr.length == next.offset)) { | |
2282 | curr.length += next.length; | |
2283 | continue; | |
2284 | } | |
2285 | ||
2286 | if (curr.length > 0) { | |
2287 | dump_map_entry(output_format, &curr, &next); | |
2288 | } | |
2289 | curr = next; | |
2290 | } | |
2291 | ||
2292 | dump_map_entry(output_format, &curr, NULL); | |
2293 | ||
2294 | out: | |
26f54e9a | 2295 | blk_unref(blk); |
4c93a13b PB |
2296 | return ret < 0; |
2297 | } | |
2298 | ||
f7b4a940 AL |
2299 | #define SNAPSHOT_LIST 1 |
2300 | #define SNAPSHOT_CREATE 2 | |
2301 | #define SNAPSHOT_APPLY 3 | |
2302 | #define SNAPSHOT_DELETE 4 | |
2303 | ||
153859be | 2304 | static int img_snapshot(int argc, char **argv) |
f7b4a940 | 2305 | { |
26f54e9a | 2306 | BlockBackend *blk; |
f7b4a940 AL |
2307 | BlockDriverState *bs; |
2308 | QEMUSnapshotInfo sn; | |
2309 | char *filename, *snapshot_name = NULL; | |
c2abccec | 2310 | int c, ret = 0, bdrv_oflags; |
f7b4a940 AL |
2311 | int action = 0; |
2312 | qemu_timeval tv; | |
f382d43a | 2313 | bool quiet = false; |
a89d89d3 | 2314 | Error *err = NULL; |
f7b4a940 | 2315 | |
710da702 | 2316 | bdrv_oflags = BDRV_O_FLAGS | BDRV_O_RDWR; |
f7b4a940 AL |
2317 | /* Parse commandline parameters */ |
2318 | for(;;) { | |
f382d43a | 2319 | c = getopt(argc, argv, "la:c:d:hq"); |
b8fb60da | 2320 | if (c == -1) { |
f7b4a940 | 2321 | break; |
b8fb60da | 2322 | } |
f7b4a940 | 2323 | switch(c) { |
ef87394c | 2324 | case '?': |
f7b4a940 AL |
2325 | case 'h': |
2326 | help(); | |
153859be | 2327 | return 0; |
f7b4a940 AL |
2328 | case 'l': |
2329 | if (action) { | |
ac1307ab | 2330 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2331 | return 0; |
f7b4a940 AL |
2332 | } |
2333 | action = SNAPSHOT_LIST; | |
f5edb014 | 2334 | bdrv_oflags &= ~BDRV_O_RDWR; /* no need for RW */ |
f7b4a940 AL |
2335 | break; |
2336 | case 'a': | |
2337 | if (action) { | |
ac1307ab | 2338 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2339 | return 0; |
f7b4a940 AL |
2340 | } |
2341 | action = SNAPSHOT_APPLY; | |
2342 | snapshot_name = optarg; | |
2343 | break; | |
2344 | case 'c': | |
2345 | if (action) { | |
ac1307ab | 2346 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2347 | return 0; |
f7b4a940 AL |
2348 | } |
2349 | action = SNAPSHOT_CREATE; | |
2350 | snapshot_name = optarg; | |
2351 | break; | |
2352 | case 'd': | |
2353 | if (action) { | |
ac1307ab | 2354 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2355 | return 0; |
f7b4a940 AL |
2356 | } |
2357 | action = SNAPSHOT_DELETE; | |
2358 | snapshot_name = optarg; | |
2359 | break; | |
f382d43a MR |
2360 | case 'q': |
2361 | quiet = true; | |
2362 | break; | |
f7b4a940 AL |
2363 | } |
2364 | } | |
2365 | ||
fc11eb26 | 2366 | if (optind != argc - 1) { |
ac1307ab | 2367 | error_exit("Expecting one image file name"); |
b8fb60da | 2368 | } |
f7b4a940 AL |
2369 | filename = argv[optind++]; |
2370 | ||
2371 | /* Open the image */ | |
7e7d56d9 MA |
2372 | blk = img_open("image", filename, NULL, bdrv_oflags, true, quiet); |
2373 | if (!blk) { | |
2374 | return 1; | |
c2abccec | 2375 | } |
7e7d56d9 | 2376 | bs = blk_bs(blk); |
f7b4a940 AL |
2377 | |
2378 | /* Perform the requested action */ | |
2379 | switch(action) { | |
2380 | case SNAPSHOT_LIST: | |
2381 | dump_snapshots(bs); | |
2382 | break; | |
2383 | ||
2384 | case SNAPSHOT_CREATE: | |
2385 | memset(&sn, 0, sizeof(sn)); | |
2386 | pstrcpy(sn.name, sizeof(sn.name), snapshot_name); | |
2387 | ||
2388 | qemu_gettimeofday(&tv); | |
2389 | sn.date_sec = tv.tv_sec; | |
2390 | sn.date_nsec = tv.tv_usec * 1000; | |
2391 | ||
2392 | ret = bdrv_snapshot_create(bs, &sn); | |
b8fb60da | 2393 | if (ret) { |
15654a6d | 2394 | error_report("Could not create snapshot '%s': %d (%s)", |
f7b4a940 | 2395 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 2396 | } |
f7b4a940 AL |
2397 | break; |
2398 | ||
2399 | case SNAPSHOT_APPLY: | |
2400 | ret = bdrv_snapshot_goto(bs, snapshot_name); | |
b8fb60da | 2401 | if (ret) { |
15654a6d | 2402 | error_report("Could not apply snapshot '%s': %d (%s)", |
f7b4a940 | 2403 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 2404 | } |
f7b4a940 AL |
2405 | break; |
2406 | ||
2407 | case SNAPSHOT_DELETE: | |
a89d89d3 | 2408 | bdrv_snapshot_delete_by_id_or_name(bs, snapshot_name, &err); |
84d18f06 | 2409 | if (err) { |
a89d89d3 WX |
2410 | error_report("Could not delete snapshot '%s': (%s)", |
2411 | snapshot_name, error_get_pretty(err)); | |
2412 | error_free(err); | |
2413 | ret = 1; | |
b8fb60da | 2414 | } |
f7b4a940 AL |
2415 | break; |
2416 | } | |
2417 | ||
2418 | /* Cleanup */ | |
26f54e9a | 2419 | blk_unref(blk); |
c2abccec MK |
2420 | if (ret) { |
2421 | return 1; | |
2422 | } | |
153859be | 2423 | return 0; |
f7b4a940 AL |
2424 | } |
2425 | ||
3e85c6fd KW |
2426 | static int img_rebase(int argc, char **argv) |
2427 | { | |
26f54e9a | 2428 | BlockBackend *blk = NULL, *blk_old_backing = NULL, *blk_new_backing = NULL; |
40ed35a3 | 2429 | BlockDriverState *bs = NULL, *bs_old_backing = NULL, *bs_new_backing = NULL; |
f163d073 | 2430 | BlockDriver *old_backing_drv, *new_backing_drv; |
3e85c6fd | 2431 | char *filename; |
40055951 HR |
2432 | const char *fmt, *cache, *src_cache, *out_basefmt, *out_baseimg; |
2433 | int c, flags, src_flags, ret; | |
3e85c6fd | 2434 | int unsafe = 0; |
6b837bc4 | 2435 | int progress = 0; |
f382d43a | 2436 | bool quiet = false; |
34b5d2c6 | 2437 | Error *local_err = NULL; |
3e85c6fd KW |
2438 | |
2439 | /* Parse commandline parameters */ | |
e53dbee0 | 2440 | fmt = NULL; |
661a0f71 | 2441 | cache = BDRV_DEFAULT_CACHE; |
40055951 | 2442 | src_cache = BDRV_DEFAULT_CACHE; |
3e85c6fd KW |
2443 | out_baseimg = NULL; |
2444 | out_basefmt = NULL; | |
3e85c6fd | 2445 | for(;;) { |
40055951 | 2446 | c = getopt(argc, argv, "hf:F:b:upt:T:q"); |
b8fb60da | 2447 | if (c == -1) { |
3e85c6fd | 2448 | break; |
b8fb60da | 2449 | } |
3e85c6fd | 2450 | switch(c) { |
ef87394c | 2451 | case '?': |
3e85c6fd KW |
2452 | case 'h': |
2453 | help(); | |
2454 | return 0; | |
e53dbee0 KW |
2455 | case 'f': |
2456 | fmt = optarg; | |
2457 | break; | |
3e85c6fd KW |
2458 | case 'F': |
2459 | out_basefmt = optarg; | |
2460 | break; | |
2461 | case 'b': | |
2462 | out_baseimg = optarg; | |
2463 | break; | |
2464 | case 'u': | |
2465 | unsafe = 1; | |
2466 | break; | |
6b837bc4 JS |
2467 | case 'p': |
2468 | progress = 1; | |
2469 | break; | |
661a0f71 FS |
2470 | case 't': |
2471 | cache = optarg; | |
2472 | break; | |
40055951 HR |
2473 | case 'T': |
2474 | src_cache = optarg; | |
2475 | break; | |
f382d43a MR |
2476 | case 'q': |
2477 | quiet = true; | |
2478 | break; | |
3e85c6fd KW |
2479 | } |
2480 | } | |
2481 | ||
f382d43a MR |
2482 | if (quiet) { |
2483 | progress = 0; | |
2484 | } | |
2485 | ||
ac1307ab FZ |
2486 | if (optind != argc - 1) { |
2487 | error_exit("Expecting one image file name"); | |
2488 | } | |
2489 | if (!unsafe && !out_baseimg) { | |
2490 | error_exit("Must specify backing file (-b) or use unsafe mode (-u)"); | |
b8fb60da | 2491 | } |
3e85c6fd KW |
2492 | filename = argv[optind++]; |
2493 | ||
6b837bc4 JS |
2494 | qemu_progress_init(progress, 2.0); |
2495 | qemu_progress_print(0, 100); | |
2496 | ||
661a0f71 | 2497 | flags = BDRV_O_RDWR | (unsafe ? BDRV_O_NO_BACKING : 0); |
c3993cdc | 2498 | ret = bdrv_parse_cache_flags(cache, &flags); |
661a0f71 FS |
2499 | if (ret < 0) { |
2500 | error_report("Invalid cache option: %s", cache); | |
40ed35a3 | 2501 | goto out; |
661a0f71 FS |
2502 | } |
2503 | ||
40055951 HR |
2504 | src_flags = BDRV_O_FLAGS; |
2505 | ret = bdrv_parse_cache_flags(src_cache, &src_flags); | |
2506 | if (ret < 0) { | |
2507 | error_report("Invalid source cache option: %s", src_cache); | |
40ed35a3 | 2508 | goto out; |
40055951 HR |
2509 | } |
2510 | ||
3e85c6fd KW |
2511 | /* |
2512 | * Open the images. | |
2513 | * | |
2514 | * Ignore the old backing file for unsafe rebase in case we want to correct | |
2515 | * the reference to a renamed or moved backing file. | |
2516 | */ | |
7e7d56d9 MA |
2517 | blk = img_open("image", filename, fmt, flags, true, quiet); |
2518 | if (!blk) { | |
40ed35a3 SH |
2519 | ret = -1; |
2520 | goto out; | |
c2abccec | 2521 | } |
7e7d56d9 | 2522 | bs = blk_bs(blk); |
3e85c6fd KW |
2523 | |
2524 | /* Find the right drivers for the backing files */ | |
2525 | old_backing_drv = NULL; | |
2526 | new_backing_drv = NULL; | |
2527 | ||
2528 | if (!unsafe && bs->backing_format[0] != '\0') { | |
2529 | old_backing_drv = bdrv_find_format(bs->backing_format); | |
2530 | if (old_backing_drv == NULL) { | |
15654a6d | 2531 | error_report("Invalid format name: '%s'", bs->backing_format); |
c2abccec MK |
2532 | ret = -1; |
2533 | goto out; | |
3e85c6fd KW |
2534 | } |
2535 | } | |
2536 | ||
2537 | if (out_basefmt != NULL) { | |
2538 | new_backing_drv = bdrv_find_format(out_basefmt); | |
2539 | if (new_backing_drv == NULL) { | |
15654a6d | 2540 | error_report("Invalid format name: '%s'", out_basefmt); |
c2abccec MK |
2541 | ret = -1; |
2542 | goto out; | |
3e85c6fd KW |
2543 | } |
2544 | } | |
2545 | ||
2546 | /* For safe rebasing we need to compare old and new backing file */ | |
40ed35a3 | 2547 | if (!unsafe) { |
3e85c6fd KW |
2548 | char backing_name[1024]; |
2549 | ||
7e7d56d9 MA |
2550 | blk_old_backing = blk_new_with_bs("old_backing", &error_abort); |
2551 | bs_old_backing = blk_bs(blk_old_backing); | |
3e85c6fd | 2552 | bdrv_get_backing_filename(bs, backing_name, sizeof(backing_name)); |
40055951 | 2553 | ret = bdrv_open(&bs_old_backing, backing_name, NULL, NULL, src_flags, |
34b5d2c6 | 2554 | old_backing_drv, &local_err); |
c2abccec | 2555 | if (ret) { |
34b5d2c6 HR |
2556 | error_report("Could not open old backing file '%s': %s", |
2557 | backing_name, error_get_pretty(local_err)); | |
2558 | error_free(local_err); | |
c2abccec | 2559 | goto out; |
3e85c6fd | 2560 | } |
a616673d | 2561 | if (out_baseimg[0]) { |
7e7d56d9 MA |
2562 | blk_new_backing = blk_new_with_bs("new_backing", &error_abort); |
2563 | bs_new_backing = blk_bs(blk_new_backing); | |
40055951 HR |
2564 | ret = bdrv_open(&bs_new_backing, out_baseimg, NULL, NULL, src_flags, |
2565 | new_backing_drv, &local_err); | |
a616673d | 2566 | if (ret) { |
34b5d2c6 HR |
2567 | error_report("Could not open new backing file '%s': %s", |
2568 | out_baseimg, error_get_pretty(local_err)); | |
2569 | error_free(local_err); | |
a616673d AB |
2570 | goto out; |
2571 | } | |
3e85c6fd KW |
2572 | } |
2573 | } | |
2574 | ||
2575 | /* | |
2576 | * Check each unallocated cluster in the COW file. If it is unallocated, | |
2577 | * accesses go to the backing file. We must therefore compare this cluster | |
2578 | * in the old and new backing file, and if they differ we need to copy it | |
2579 | * from the old backing file into the COW file. | |
2580 | * | |
2581 | * If qemu-img crashes during this step, no harm is done. The content of | |
2582 | * the image is the same as the original one at any time. | |
2583 | */ | |
2584 | if (!unsafe) { | |
52bf1e72 MA |
2585 | int64_t num_sectors; |
2586 | int64_t old_backing_num_sectors; | |
2587 | int64_t new_backing_num_sectors = 0; | |
3e85c6fd | 2588 | uint64_t sector; |
cc60e327 | 2589 | int n; |
d6771bfa T |
2590 | uint8_t * buf_old; |
2591 | uint8_t * buf_new; | |
1f710495 | 2592 | float local_progress = 0; |
d6771bfa | 2593 | |
bb1c0597 KW |
2594 | buf_old = qemu_blockalign(bs, IO_BUF_SIZE); |
2595 | buf_new = qemu_blockalign(bs, IO_BUF_SIZE); | |
3e85c6fd | 2596 | |
52bf1e72 MA |
2597 | num_sectors = bdrv_nb_sectors(bs); |
2598 | if (num_sectors < 0) { | |
2599 | error_report("Could not get size of '%s': %s", | |
2600 | filename, strerror(-num_sectors)); | |
2601 | ret = -1; | |
2602 | goto out; | |
2603 | } | |
2604 | old_backing_num_sectors = bdrv_nb_sectors(bs_old_backing); | |
2605 | if (old_backing_num_sectors < 0) { | |
2606 | char backing_name[1024]; | |
2607 | ||
2608 | bdrv_get_backing_filename(bs, backing_name, sizeof(backing_name)); | |
2609 | error_report("Could not get size of '%s': %s", | |
2610 | backing_name, strerror(-old_backing_num_sectors)); | |
2611 | ret = -1; | |
2612 | goto out; | |
2613 | } | |
a616673d | 2614 | if (bs_new_backing) { |
52bf1e72 MA |
2615 | new_backing_num_sectors = bdrv_nb_sectors(bs_new_backing); |
2616 | if (new_backing_num_sectors < 0) { | |
2617 | error_report("Could not get size of '%s': %s", | |
2618 | out_baseimg, strerror(-new_backing_num_sectors)); | |
2619 | ret = -1; | |
2620 | goto out; | |
2621 | } | |
a616673d | 2622 | } |
3e85c6fd | 2623 | |
1f710495 KW |
2624 | if (num_sectors != 0) { |
2625 | local_progress = (float)100 / | |
2626 | (num_sectors / MIN(num_sectors, IO_BUF_SIZE / 512)); | |
2627 | } | |
2628 | ||
3e85c6fd KW |
2629 | for (sector = 0; sector < num_sectors; sector += n) { |
2630 | ||
2631 | /* How many sectors can we handle with the next read? */ | |
2632 | if (sector + (IO_BUF_SIZE / 512) <= num_sectors) { | |
2633 | n = (IO_BUF_SIZE / 512); | |
2634 | } else { | |
2635 | n = num_sectors - sector; | |
2636 | } | |
2637 | ||
2638 | /* If the cluster is allocated, we don't need to take action */ | |
cc60e327 | 2639 | ret = bdrv_is_allocated(bs, sector, n, &n); |
d663640c PB |
2640 | if (ret < 0) { |
2641 | error_report("error while reading image metadata: %s", | |
2642 | strerror(-ret)); | |
2643 | goto out; | |
2644 | } | |
cc60e327 | 2645 | if (ret) { |
3e85c6fd KW |
2646 | continue; |
2647 | } | |
2648 | ||
87a1b3e3 KW |
2649 | /* |
2650 | * Read old and new backing file and take into consideration that | |
2651 | * backing files may be smaller than the COW image. | |
2652 | */ | |
2653 | if (sector >= old_backing_num_sectors) { | |
2654 | memset(buf_old, 0, n * BDRV_SECTOR_SIZE); | |
2655 | } else { | |
2656 | if (sector + n > old_backing_num_sectors) { | |
2657 | n = old_backing_num_sectors - sector; | |
2658 | } | |
2659 | ||
2660 | ret = bdrv_read(bs_old_backing, sector, buf_old, n); | |
2661 | if (ret < 0) { | |
2662 | error_report("error while reading from old backing file"); | |
2663 | goto out; | |
2664 | } | |
3e85c6fd | 2665 | } |
87a1b3e3 | 2666 | |
a616673d | 2667 | if (sector >= new_backing_num_sectors || !bs_new_backing) { |
87a1b3e3 KW |
2668 | memset(buf_new, 0, n * BDRV_SECTOR_SIZE); |
2669 | } else { | |
2670 | if (sector + n > new_backing_num_sectors) { | |
2671 | n = new_backing_num_sectors - sector; | |
2672 | } | |
2673 | ||
2674 | ret = bdrv_read(bs_new_backing, sector, buf_new, n); | |
2675 | if (ret < 0) { | |
2676 | error_report("error while reading from new backing file"); | |
2677 | goto out; | |
2678 | } | |
3e85c6fd KW |
2679 | } |
2680 | ||
2681 | /* If they differ, we need to write to the COW file */ | |
2682 | uint64_t written = 0; | |
2683 | ||
2684 | while (written < n) { | |
2685 | int pnum; | |
2686 | ||
2687 | if (compare_sectors(buf_old + written * 512, | |
60b1bd4f | 2688 | buf_new + written * 512, n - written, &pnum)) |
3e85c6fd KW |
2689 | { |
2690 | ret = bdrv_write(bs, sector + written, | |
2691 | buf_old + written * 512, pnum); | |
2692 | if (ret < 0) { | |
15654a6d | 2693 | error_report("Error while writing to COW image: %s", |
3e85c6fd | 2694 | strerror(-ret)); |
c2abccec | 2695 | goto out; |
3e85c6fd KW |
2696 | } |
2697 | } | |
2698 | ||
2699 | written += pnum; | |
2700 | } | |
6b837bc4 | 2701 | qemu_progress_print(local_progress, 100); |
3e85c6fd | 2702 | } |
d6771bfa | 2703 | |
bb1c0597 KW |
2704 | qemu_vfree(buf_old); |
2705 | qemu_vfree(buf_new); | |
3e85c6fd KW |
2706 | } |
2707 | ||
2708 | /* | |
2709 | * Change the backing file. All clusters that are different from the old | |
2710 | * backing file are overwritten in the COW file now, so the visible content | |
2711 | * doesn't change when we switch the backing file. | |
2712 | */ | |
a616673d AB |
2713 | if (out_baseimg && *out_baseimg) { |
2714 | ret = bdrv_change_backing_file(bs, out_baseimg, out_basefmt); | |
2715 | } else { | |
2716 | ret = bdrv_change_backing_file(bs, NULL, NULL); | |
2717 | } | |
2718 | ||
3e85c6fd | 2719 | if (ret == -ENOSPC) { |
15654a6d JS |
2720 | error_report("Could not change the backing file to '%s': No " |
2721 | "space left in the file header", out_baseimg); | |
3e85c6fd | 2722 | } else if (ret < 0) { |
15654a6d | 2723 | error_report("Could not change the backing file to '%s': %s", |
3e85c6fd KW |
2724 | out_baseimg, strerror(-ret)); |
2725 | } | |
2726 | ||
6b837bc4 | 2727 | qemu_progress_print(100, 0); |
3e85c6fd KW |
2728 | /* |
2729 | * TODO At this point it is possible to check if any clusters that are | |
2730 | * allocated in the COW file are the same in the backing file. If so, they | |
2731 | * could be dropped from the COW file. Don't do this before switching the | |
2732 | * backing file, in case of a crash this would lead to corruption. | |
2733 | */ | |
c2abccec | 2734 | out: |
6b837bc4 | 2735 | qemu_progress_end(); |
3e85c6fd KW |
2736 | /* Cleanup */ |
2737 | if (!unsafe) { | |
26f54e9a | 2738 | blk_unref(blk_old_backing); |
26f54e9a | 2739 | blk_unref(blk_new_backing); |
3e85c6fd KW |
2740 | } |
2741 | ||
26f54e9a | 2742 | blk_unref(blk); |
c2abccec MK |
2743 | if (ret) { |
2744 | return 1; | |
2745 | } | |
3e85c6fd KW |
2746 | return 0; |
2747 | } | |
2748 | ||
ae6b0ed6 SH |
2749 | static int img_resize(int argc, char **argv) |
2750 | { | |
2751 | int c, ret, relative; | |
2752 | const char *filename, *fmt, *size; | |
2753 | int64_t n, total_size; | |
f382d43a | 2754 | bool quiet = false; |
26f54e9a | 2755 | BlockBackend *blk = NULL; |
2a81998a | 2756 | BlockDriverState *bs = NULL; |
20caf0f7 DXW |
2757 | QemuOpts *param; |
2758 | static QemuOptsList resize_options = { | |
2759 | .name = "resize_options", | |
2760 | .head = QTAILQ_HEAD_INITIALIZER(resize_options.head), | |
2761 | .desc = { | |
2762 | { | |
2763 | .name = BLOCK_OPT_SIZE, | |
2764 | .type = QEMU_OPT_SIZE, | |
2765 | .help = "Virtual disk size" | |
2766 | }, { | |
2767 | /* end of list */ | |
2768 | } | |
ae6b0ed6 | 2769 | }, |
ae6b0ed6 SH |
2770 | }; |
2771 | ||
e80fec7f KW |
2772 | /* Remove size from argv manually so that negative numbers are not treated |
2773 | * as options by getopt. */ | |
2774 | if (argc < 3) { | |
ac1307ab | 2775 | error_exit("Not enough arguments"); |
e80fec7f KW |
2776 | return 1; |
2777 | } | |
2778 | ||
2779 | size = argv[--argc]; | |
2780 | ||
2781 | /* Parse getopt arguments */ | |
ae6b0ed6 SH |
2782 | fmt = NULL; |
2783 | for(;;) { | |
f382d43a | 2784 | c = getopt(argc, argv, "f:hq"); |
ae6b0ed6 SH |
2785 | if (c == -1) { |
2786 | break; | |
2787 | } | |
2788 | switch(c) { | |
ef87394c | 2789 | case '?': |
ae6b0ed6 SH |
2790 | case 'h': |
2791 | help(); | |
2792 | break; | |
2793 | case 'f': | |
2794 | fmt = optarg; | |
2795 | break; | |
f382d43a MR |
2796 | case 'q': |
2797 | quiet = true; | |
2798 | break; | |
ae6b0ed6 SH |
2799 | } |
2800 | } | |
fc11eb26 | 2801 | if (optind != argc - 1) { |
ac1307ab | 2802 | error_exit("Expecting one image file name"); |
ae6b0ed6 SH |
2803 | } |
2804 | filename = argv[optind++]; | |
ae6b0ed6 SH |
2805 | |
2806 | /* Choose grow, shrink, or absolute resize mode */ | |
2807 | switch (size[0]) { | |
2808 | case '+': | |
2809 | relative = 1; | |
2810 | size++; | |
2811 | break; | |
2812 | case '-': | |
2813 | relative = -1; | |
2814 | size++; | |
2815 | break; | |
2816 | default: | |
2817 | relative = 0; | |
2818 | break; | |
2819 | } | |
2820 | ||
2821 | /* Parse size */ | |
87ea75d5 | 2822 | param = qemu_opts_create(&resize_options, NULL, 0, &error_abort); |
20caf0f7 | 2823 | if (qemu_opt_set(param, BLOCK_OPT_SIZE, size)) { |
ae6b0ed6 | 2824 | /* Error message already printed when size parsing fails */ |
2a81998a | 2825 | ret = -1; |
20caf0f7 | 2826 | qemu_opts_del(param); |
2a81998a | 2827 | goto out; |
ae6b0ed6 | 2828 | } |
20caf0f7 DXW |
2829 | n = qemu_opt_get_size(param, BLOCK_OPT_SIZE, 0); |
2830 | qemu_opts_del(param); | |
ae6b0ed6 | 2831 | |
7e7d56d9 MA |
2832 | blk = img_open("image", filename, fmt, BDRV_O_FLAGS | BDRV_O_RDWR, |
2833 | true, quiet); | |
2834 | if (!blk) { | |
2a81998a JS |
2835 | ret = -1; |
2836 | goto out; | |
c2abccec | 2837 | } |
7e7d56d9 | 2838 | bs = blk_bs(blk); |
ae6b0ed6 SH |
2839 | |
2840 | if (relative) { | |
2841 | total_size = bdrv_getlength(bs) + n * relative; | |
2842 | } else { | |
2843 | total_size = n; | |
2844 | } | |
2845 | if (total_size <= 0) { | |
15654a6d | 2846 | error_report("New image size must be positive"); |
c2abccec MK |
2847 | ret = -1; |
2848 | goto out; | |
ae6b0ed6 SH |
2849 | } |
2850 | ||
2851 | ret = bdrv_truncate(bs, total_size); | |
2852 | switch (ret) { | |
2853 | case 0: | |
f382d43a | 2854 | qprintf(quiet, "Image resized.\n"); |
ae6b0ed6 SH |
2855 | break; |
2856 | case -ENOTSUP: | |
259b2173 | 2857 | error_report("This image does not support resize"); |
ae6b0ed6 SH |
2858 | break; |
2859 | case -EACCES: | |
15654a6d | 2860 | error_report("Image is read-only"); |
ae6b0ed6 SH |
2861 | break; |
2862 | default: | |
15654a6d | 2863 | error_report("Error resizing image (%d)", -ret); |
ae6b0ed6 SH |
2864 | break; |
2865 | } | |
c2abccec | 2866 | out: |
26f54e9a | 2867 | blk_unref(blk); |
c2abccec MK |
2868 | if (ret) { |
2869 | return 1; | |
2870 | } | |
ae6b0ed6 SH |
2871 | return 0; |
2872 | } | |
2873 | ||
76a3a34d HR |
2874 | static void amend_status_cb(BlockDriverState *bs, |
2875 | int64_t offset, int64_t total_work_size) | |
2876 | { | |
2877 | qemu_progress_print(100.f * offset / total_work_size, 0); | |
2878 | } | |
2879 | ||
6f176b48 HR |
2880 | static int img_amend(int argc, char **argv) |
2881 | { | |
2882 | int c, ret = 0; | |
2883 | char *options = NULL; | |
83d0521a CL |
2884 | QemuOptsList *create_opts = NULL; |
2885 | QemuOpts *opts = NULL; | |
bd39e6ed HR |
2886 | const char *fmt = NULL, *filename, *cache; |
2887 | int flags; | |
76a3a34d | 2888 | bool quiet = false, progress = false; |
26f54e9a | 2889 | BlockBackend *blk = NULL; |
6f176b48 HR |
2890 | BlockDriverState *bs = NULL; |
2891 | ||
bd39e6ed | 2892 | cache = BDRV_DEFAULT_CACHE; |
6f176b48 | 2893 | for (;;) { |
76a3a34d | 2894 | c = getopt(argc, argv, "ho:f:t:pq"); |
6f176b48 HR |
2895 | if (c == -1) { |
2896 | break; | |
2897 | } | |
2898 | ||
2899 | switch (c) { | |
2900 | case 'h': | |
2901 | case '?': | |
2902 | help(); | |
2903 | break; | |
2904 | case 'o': | |
626f84f3 KW |
2905 | if (!is_valid_option_list(optarg)) { |
2906 | error_report("Invalid option list: %s", optarg); | |
2907 | ret = -1; | |
2908 | goto out; | |
2909 | } | |
2910 | if (!options) { | |
2911 | options = g_strdup(optarg); | |
2912 | } else { | |
2913 | char *old_options = options; | |
2914 | options = g_strdup_printf("%s,%s", options, optarg); | |
2915 | g_free(old_options); | |
2916 | } | |
6f176b48 HR |
2917 | break; |
2918 | case 'f': | |
2919 | fmt = optarg; | |
2920 | break; | |
bd39e6ed HR |
2921 | case 't': |
2922 | cache = optarg; | |
2923 | break; | |
76a3a34d HR |
2924 | case 'p': |
2925 | progress = true; | |
2926 | break; | |
6f176b48 HR |
2927 | case 'q': |
2928 | quiet = true; | |
2929 | break; | |
2930 | } | |
2931 | } | |
2932 | ||
a283cb6e | 2933 | if (!options) { |
ac1307ab | 2934 | error_exit("Must specify options (-o)"); |
6f176b48 HR |
2935 | } |
2936 | ||
76a3a34d HR |
2937 | if (quiet) { |
2938 | progress = false; | |
2939 | } | |
2940 | qemu_progress_init(progress, 1.0); | |
2941 | ||
a283cb6e KW |
2942 | filename = (optind == argc - 1) ? argv[argc - 1] : NULL; |
2943 | if (fmt && has_help_option(options)) { | |
2944 | /* If a format is explicitly specified (and possibly no filename is | |
2945 | * given), print option help here */ | |
2946 | ret = print_block_option_help(filename, fmt); | |
2947 | goto out; | |
6f176b48 HR |
2948 | } |
2949 | ||
a283cb6e | 2950 | if (optind != argc - 1) { |
ac1307ab | 2951 | error_exit("Expecting one image file name"); |
a283cb6e | 2952 | } |
6f176b48 | 2953 | |
bd39e6ed HR |
2954 | flags = BDRV_O_FLAGS | BDRV_O_RDWR; |
2955 | ret = bdrv_parse_cache_flags(cache, &flags); | |
2956 | if (ret < 0) { | |
2957 | error_report("Invalid cache option: %s", cache); | |
2958 | goto out; | |
2959 | } | |
2960 | ||
7e7d56d9 MA |
2961 | blk = img_open("image", filename, fmt, flags, true, quiet); |
2962 | if (!blk) { | |
6f176b48 HR |
2963 | error_report("Could not open image '%s'", filename); |
2964 | ret = -1; | |
2965 | goto out; | |
2966 | } | |
7e7d56d9 | 2967 | bs = blk_bs(blk); |
6f176b48 HR |
2968 | |
2969 | fmt = bs->drv->format_name; | |
2970 | ||
626f84f3 | 2971 | if (has_help_option(options)) { |
a283cb6e | 2972 | /* If the format was auto-detected, print option help here */ |
6f176b48 HR |
2973 | ret = print_block_option_help(filename, fmt); |
2974 | goto out; | |
2975 | } | |
2976 | ||
c282e1fd | 2977 | create_opts = qemu_opts_append(create_opts, bs->drv->create_opts); |
83d0521a CL |
2978 | opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); |
2979 | if (options && qemu_opts_do_parse(opts, options, NULL)) { | |
6f176b48 HR |
2980 | error_report("Invalid options for file format '%s'", fmt); |
2981 | ret = -1; | |
2982 | goto out; | |
2983 | } | |
2984 | ||
76a3a34d HR |
2985 | /* In case the driver does not call amend_status_cb() */ |
2986 | qemu_progress_print(0.f, 0); | |
2987 | ret = bdrv_amend_options(bs, opts, &amend_status_cb); | |
2988 | qemu_progress_print(100.f, 0); | |
6f176b48 HR |
2989 | if (ret < 0) { |
2990 | error_report("Error while amending options: %s", strerror(-ret)); | |
2991 | goto out; | |
2992 | } | |
2993 | ||
2994 | out: | |
76a3a34d HR |
2995 | qemu_progress_end(); |
2996 | ||
26f54e9a | 2997 | blk_unref(blk); |
83d0521a CL |
2998 | qemu_opts_del(opts); |
2999 | qemu_opts_free(create_opts); | |
626f84f3 KW |
3000 | g_free(options); |
3001 | ||
6f176b48 HR |
3002 | if (ret) { |
3003 | return 1; | |
3004 | } | |
3005 | return 0; | |
3006 | } | |
3007 | ||
c227f099 | 3008 | static const img_cmd_t img_cmds[] = { |
153859be SB |
3009 | #define DEF(option, callback, arg_string) \ |
3010 | { option, callback }, | |
3011 | #include "qemu-img-cmds.h" | |
3012 | #undef DEF | |
3013 | #undef GEN_DOCS | |
3014 | { NULL, NULL, }, | |
3015 | }; | |
3016 | ||
ea2384d3 FB |
3017 | int main(int argc, char **argv) |
3018 | { | |
c227f099 | 3019 | const img_cmd_t *cmd; |
153859be | 3020 | const char *cmdname; |
2f78e491 | 3021 | Error *local_error = NULL; |
7db1689c | 3022 | int c; |
7db1689c JC |
3023 | static const struct option long_options[] = { |
3024 | {"help", no_argument, 0, 'h'}, | |
5f6979cb | 3025 | {"version", no_argument, 0, 'v'}, |
7db1689c JC |
3026 | {0, 0, 0, 0} |
3027 | }; | |
ea2384d3 | 3028 | |
526eda14 MK |
3029 | #ifdef CONFIG_POSIX |
3030 | signal(SIGPIPE, SIG_IGN); | |
3031 | #endif | |
3032 | ||
53f76e58 | 3033 | error_set_progname(argv[0]); |
10f5bff6 | 3034 | qemu_init_exec_dir(argv[0]); |
53f76e58 | 3035 | |
2f78e491 CN |
3036 | if (qemu_init_main_loop(&local_error)) { |
3037 | error_report("%s", error_get_pretty(local_error)); | |
3038 | error_free(local_error); | |
3039 | exit(EXIT_FAILURE); | |
3040 | } | |
3041 | ||
ea2384d3 | 3042 | bdrv_init(); |
ac1307ab FZ |
3043 | if (argc < 2) { |
3044 | error_exit("Not enough arguments"); | |
3045 | } | |
153859be | 3046 | cmdname = argv[1]; |
153859be SB |
3047 | |
3048 | /* find the command */ | |
5f6979cb | 3049 | for (cmd = img_cmds; cmd->name != NULL; cmd++) { |
153859be | 3050 | if (!strcmp(cmdname, cmd->name)) { |
7db1689c | 3051 | return cmd->handler(argc - 1, argv + 1); |
153859be | 3052 | } |
ea2384d3 | 3053 | } |
153859be | 3054 | |
5f6979cb | 3055 | c = getopt_long(argc, argv, "h", long_options, NULL); |
7db1689c JC |
3056 | |
3057 | if (c == 'h') { | |
3058 | help(); | |
3059 | } | |
5f6979cb JC |
3060 | if (c == 'v') { |
3061 | printf(QEMU_IMG_VERSION); | |
3062 | return 0; | |
3063 | } | |
7db1689c | 3064 | |
153859be | 3065 | /* not found */ |
ac1307ab | 3066 | error_exit("Command not found: %s", cmdname); |
ea2384d3 | 3067 | } |