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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 FS |
761 | int c, ret, flags; |
762 | const char *filename, *fmt, *cache; | |
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; |
ea2384d3 | 771 | for(;;) { |
687fa1d8 | 772 | c = getopt(argc, argv, "f:ht:dpq"); |
b8fb60da | 773 | if (c == -1) { |
ea2384d3 | 774 | break; |
b8fb60da | 775 | } |
ea2384d3 | 776 | switch(c) { |
ef87394c | 777 | case '?': |
ea2384d3 FB |
778 | case 'h': |
779 | help(); | |
780 | break; | |
781 | case 'f': | |
782 | fmt = optarg; | |
783 | break; | |
661a0f71 FS |
784 | case 't': |
785 | cache = optarg; | |
786 | break; | |
9a86fe48 HR |
787 | case 'd': |
788 | drop = true; | |
789 | break; | |
687fa1d8 HR |
790 | case 'p': |
791 | progress = true; | |
792 | break; | |
f382d43a MR |
793 | case 'q': |
794 | quiet = true; | |
795 | break; | |
ea2384d3 FB |
796 | } |
797 | } | |
687fa1d8 HR |
798 | |
799 | /* Progress is not shown in Quiet mode */ | |
800 | if (quiet) { | |
801 | progress = false; | |
802 | } | |
803 | ||
fc11eb26 | 804 | if (optind != argc - 1) { |
ac1307ab | 805 | error_exit("Expecting one image file name"); |
b8fb60da | 806 | } |
ea2384d3 FB |
807 | filename = argv[optind++]; |
808 | ||
9a86fe48 | 809 | flags = BDRV_O_RDWR | BDRV_O_UNMAP; |
c3993cdc | 810 | ret = bdrv_parse_cache_flags(cache, &flags); |
661a0f71 FS |
811 | if (ret < 0) { |
812 | error_report("Invalid cache option: %s", cache); | |
a3981eb9 | 813 | return 1; |
661a0f71 FS |
814 | } |
815 | ||
7e7d56d9 MA |
816 | blk = img_open("image", filename, fmt, flags, true, quiet); |
817 | if (!blk) { | |
818 | return 1; | |
c2abccec | 819 | } |
7e7d56d9 MA |
820 | bs = blk_bs(blk); |
821 | ||
687fa1d8 HR |
822 | qemu_progress_init(progress, 1.f); |
823 | qemu_progress_print(0.f, 100); | |
824 | ||
d4a3238a HR |
825 | /* This is different from QMP, which by default uses the deepest file in the |
826 | * backing chain (i.e., the very base); however, the traditional behavior of | |
827 | * qemu-img commit is using the immediate backing file. */ | |
828 | base_bs = bs->backing_hd; | |
829 | if (!base_bs) { | |
830 | error_setg(&local_err, "Image does not have a backing file"); | |
831 | goto done; | |
832 | } | |
833 | ||
834 | cbi = (CommonBlockJobCBInfo){ | |
835 | .errp = &local_err, | |
836 | .bs = bs, | |
837 | }; | |
838 | ||
839 | commit_active_start(bs, base_bs, 0, BLOCKDEV_ON_ERROR_REPORT, | |
840 | common_block_job_cb, &cbi, &local_err); | |
841 | if (local_err) { | |
842 | goto done; | |
ea2384d3 FB |
843 | } |
844 | ||
9a86fe48 HR |
845 | /* The block job will swap base_bs and bs (which is not what we really want |
846 | * here, but okay) and unref base_bs (after the swap, i.e., the old top | |
847 | * image). In order to still be able to empty that top image afterwards, | |
848 | * increment the reference counter here preemptively. */ | |
849 | if (!drop) { | |
850 | bdrv_ref(base_bs); | |
851 | } | |
852 | ||
d4a3238a | 853 | run_block_job(bs->job, &local_err); |
9a86fe48 HR |
854 | if (local_err) { |
855 | goto unref_backing; | |
856 | } | |
857 | ||
858 | if (!drop && base_bs->drv->bdrv_make_empty) { | |
859 | ret = base_bs->drv->bdrv_make_empty(base_bs); | |
860 | if (ret) { | |
861 | error_setg_errno(&local_err, -ret, "Could not empty %s", | |
862 | filename); | |
863 | goto unref_backing; | |
864 | } | |
865 | } | |
866 | ||
867 | unref_backing: | |
868 | if (!drop) { | |
869 | bdrv_unref(base_bs); | |
870 | } | |
d4a3238a HR |
871 | |
872 | done: | |
687fa1d8 HR |
873 | qemu_progress_end(); |
874 | ||
26f54e9a | 875 | blk_unref(blk); |
d4a3238a HR |
876 | |
877 | if (local_err) { | |
878 | qerror_report_err(local_err); | |
879 | error_free(local_err); | |
c2abccec MK |
880 | return 1; |
881 | } | |
d4a3238a HR |
882 | |
883 | qprintf(quiet, "Image committed.\n"); | |
ea2384d3 FB |
884 | return 0; |
885 | } | |
886 | ||
f58c7b35 TS |
887 | /* |
888 | * Returns true iff the first sector pointed to by 'buf' contains at least | |
889 | * a non-NUL byte. | |
890 | * | |
891 | * 'pnum' is set to the number of sectors (including and immediately following | |
892 | * the first one) that are known to be in the same allocated/unallocated state. | |
893 | */ | |
ea2384d3 FB |
894 | static int is_allocated_sectors(const uint8_t *buf, int n, int *pnum) |
895 | { | |
1a6d39fd SH |
896 | bool is_zero; |
897 | int i; | |
ea2384d3 FB |
898 | |
899 | if (n <= 0) { | |
900 | *pnum = 0; | |
901 | return 0; | |
902 | } | |
1a6d39fd | 903 | is_zero = buffer_is_zero(buf, 512); |
ea2384d3 FB |
904 | for(i = 1; i < n; i++) { |
905 | buf += 512; | |
1a6d39fd | 906 | if (is_zero != buffer_is_zero(buf, 512)) { |
ea2384d3 | 907 | break; |
1a6d39fd | 908 | } |
ea2384d3 FB |
909 | } |
910 | *pnum = i; | |
1a6d39fd | 911 | return !is_zero; |
ea2384d3 FB |
912 | } |
913 | ||
a22f123c KW |
914 | /* |
915 | * Like is_allocated_sectors, but if the buffer starts with a used sector, | |
916 | * up to 'min' consecutive sectors containing zeros are ignored. This avoids | |
917 | * breaking up write requests for only small sparse areas. | |
918 | */ | |
919 | static int is_allocated_sectors_min(const uint8_t *buf, int n, int *pnum, | |
920 | int min) | |
921 | { | |
922 | int ret; | |
923 | int num_checked, num_used; | |
924 | ||
925 | if (n < min) { | |
926 | min = n; | |
927 | } | |
928 | ||
929 | ret = is_allocated_sectors(buf, n, pnum); | |
930 | if (!ret) { | |
931 | return ret; | |
932 | } | |
933 | ||
934 | num_used = *pnum; | |
935 | buf += BDRV_SECTOR_SIZE * *pnum; | |
936 | n -= *pnum; | |
937 | num_checked = num_used; | |
938 | ||
939 | while (n > 0) { | |
940 | ret = is_allocated_sectors(buf, n, pnum); | |
941 | ||
942 | buf += BDRV_SECTOR_SIZE * *pnum; | |
943 | n -= *pnum; | |
944 | num_checked += *pnum; | |
945 | if (ret) { | |
946 | num_used = num_checked; | |
947 | } else if (*pnum >= min) { | |
948 | break; | |
949 | } | |
950 | } | |
951 | ||
952 | *pnum = num_used; | |
953 | return 1; | |
954 | } | |
955 | ||
3e85c6fd KW |
956 | /* |
957 | * Compares two buffers sector by sector. Returns 0 if the first sector of both | |
958 | * buffers matches, non-zero otherwise. | |
959 | * | |
960 | * pnum is set to the number of sectors (including and immediately following | |
961 | * the first one) that are known to have the same comparison result | |
962 | */ | |
963 | static int compare_sectors(const uint8_t *buf1, const uint8_t *buf2, int n, | |
964 | int *pnum) | |
965 | { | |
966 | int res, i; | |
967 | ||
968 | if (n <= 0) { | |
969 | *pnum = 0; | |
970 | return 0; | |
971 | } | |
972 | ||
973 | res = !!memcmp(buf1, buf2, 512); | |
974 | for(i = 1; i < n; i++) { | |
975 | buf1 += 512; | |
976 | buf2 += 512; | |
977 | ||
978 | if (!!memcmp(buf1, buf2, 512) != res) { | |
979 | break; | |
980 | } | |
981 | } | |
982 | ||
983 | *pnum = i; | |
984 | return res; | |
985 | } | |
986 | ||
80ee15a6 | 987 | #define IO_BUF_SIZE (2 * 1024 * 1024) |
ea2384d3 | 988 | |
d14ed18c MR |
989 | static int64_t sectors_to_bytes(int64_t sectors) |
990 | { | |
991 | return sectors << BDRV_SECTOR_BITS; | |
992 | } | |
993 | ||
994 | static int64_t sectors_to_process(int64_t total, int64_t from) | |
995 | { | |
996 | return MIN(total - from, IO_BUF_SIZE >> BDRV_SECTOR_BITS); | |
997 | } | |
998 | ||
999 | /* | |
1000 | * Check if passed sectors are empty (not allocated or contain only 0 bytes) | |
1001 | * | |
1002 | * Returns 0 in case sectors are filled with 0, 1 if sectors contain non-zero | |
1003 | * data and negative value on error. | |
1004 | * | |
1005 | * @param bs: Driver used for accessing file | |
1006 | * @param sect_num: Number of first sector to check | |
1007 | * @param sect_count: Number of sectors to check | |
1008 | * @param filename: Name of disk file we are checking (logging purpose) | |
1009 | * @param buffer: Allocated buffer for storing read data | |
1010 | * @param quiet: Flag for quiet mode | |
1011 | */ | |
1012 | static int check_empty_sectors(BlockDriverState *bs, int64_t sect_num, | |
1013 | int sect_count, const char *filename, | |
1014 | uint8_t *buffer, bool quiet) | |
1015 | { | |
1016 | int pnum, ret = 0; | |
1017 | ret = bdrv_read(bs, sect_num, buffer, sect_count); | |
1018 | if (ret < 0) { | |
1019 | error_report("Error while reading offset %" PRId64 " of %s: %s", | |
1020 | sectors_to_bytes(sect_num), filename, strerror(-ret)); | |
1021 | return ret; | |
1022 | } | |
1023 | ret = is_allocated_sectors(buffer, sect_count, &pnum); | |
1024 | if (ret || pnum != sect_count) { | |
1025 | qprintf(quiet, "Content mismatch at offset %" PRId64 "!\n", | |
1026 | sectors_to_bytes(ret ? sect_num : sect_num + pnum)); | |
1027 | return 1; | |
1028 | } | |
1029 | ||
1030 | return 0; | |
1031 | } | |
1032 | ||
1033 | /* | |
1034 | * Compares two images. Exit codes: | |
1035 | * | |
1036 | * 0 - Images are identical | |
1037 | * 1 - Images differ | |
1038 | * >1 - Error occurred | |
1039 | */ | |
1040 | static int img_compare(int argc, char **argv) | |
1041 | { | |
40055951 | 1042 | const char *fmt1 = NULL, *fmt2 = NULL, *cache, *filename1, *filename2; |
26f54e9a | 1043 | BlockBackend *blk1, *blk2; |
d14ed18c MR |
1044 | BlockDriverState *bs1, *bs2; |
1045 | int64_t total_sectors1, total_sectors2; | |
1046 | uint8_t *buf1 = NULL, *buf2 = NULL; | |
1047 | int pnum1, pnum2; | |
1048 | int allocated1, allocated2; | |
1049 | int ret = 0; /* return value - 0 Ident, 1 Different, >1 Error */ | |
1050 | bool progress = false, quiet = false, strict = false; | |
40055951 | 1051 | int flags; |
d14ed18c MR |
1052 | int64_t total_sectors; |
1053 | int64_t sector_num = 0; | |
1054 | int64_t nb_sectors; | |
1055 | int c, pnum; | |
d14ed18c MR |
1056 | uint64_t progress_base; |
1057 | ||
40055951 | 1058 | cache = BDRV_DEFAULT_CACHE; |
d14ed18c | 1059 | for (;;) { |
40055951 | 1060 | c = getopt(argc, argv, "hf:F:T:pqs"); |
d14ed18c MR |
1061 | if (c == -1) { |
1062 | break; | |
1063 | } | |
1064 | switch (c) { | |
1065 | case '?': | |
1066 | case 'h': | |
1067 | help(); | |
1068 | break; | |
1069 | case 'f': | |
1070 | fmt1 = optarg; | |
1071 | break; | |
1072 | case 'F': | |
1073 | fmt2 = optarg; | |
1074 | break; | |
40055951 HR |
1075 | case 'T': |
1076 | cache = optarg; | |
1077 | break; | |
d14ed18c MR |
1078 | case 'p': |
1079 | progress = true; | |
1080 | break; | |
1081 | case 'q': | |
1082 | quiet = true; | |
1083 | break; | |
1084 | case 's': | |
1085 | strict = true; | |
1086 | break; | |
1087 | } | |
1088 | } | |
1089 | ||
1090 | /* Progress is not shown in Quiet mode */ | |
1091 | if (quiet) { | |
1092 | progress = false; | |
1093 | } | |
1094 | ||
1095 | ||
fc11eb26 | 1096 | if (optind != argc - 2) { |
ac1307ab | 1097 | error_exit("Expecting two image file names"); |
d14ed18c MR |
1098 | } |
1099 | filename1 = argv[optind++]; | |
1100 | filename2 = argv[optind++]; | |
1101 | ||
cbda016d SH |
1102 | /* Initialize before goto out */ |
1103 | qemu_progress_init(progress, 2.0); | |
1104 | ||
40055951 HR |
1105 | flags = BDRV_O_FLAGS; |
1106 | ret = bdrv_parse_cache_flags(cache, &flags); | |
1107 | if (ret < 0) { | |
1108 | error_report("Invalid source cache option: %s", cache); | |
1109 | ret = 2; | |
1110 | goto out3; | |
1111 | } | |
1112 | ||
7e7d56d9 MA |
1113 | blk1 = img_open("image_1", filename1, fmt1, flags, true, quiet); |
1114 | if (!blk1) { | |
d14ed18c MR |
1115 | error_report("Can't open file %s", filename1); |
1116 | ret = 2; | |
7e7d56d9 | 1117 | goto out3; |
d14ed18c | 1118 | } |
7e7d56d9 | 1119 | bs1 = blk_bs(blk1); |
d14ed18c | 1120 | |
7e7d56d9 MA |
1121 | blk2 = img_open("image_2", filename2, fmt2, flags, true, quiet); |
1122 | if (!blk2) { | |
d14ed18c MR |
1123 | error_report("Can't open file %s", filename2); |
1124 | ret = 2; | |
7e7d56d9 | 1125 | goto out2; |
d14ed18c | 1126 | } |
7e7d56d9 | 1127 | bs2 = blk_bs(blk2); |
d14ed18c MR |
1128 | |
1129 | buf1 = qemu_blockalign(bs1, IO_BUF_SIZE); | |
1130 | buf2 = qemu_blockalign(bs2, IO_BUF_SIZE); | |
52bf1e72 MA |
1131 | total_sectors1 = bdrv_nb_sectors(bs1); |
1132 | if (total_sectors1 < 0) { | |
1133 | error_report("Can't get size of %s: %s", | |
1134 | filename1, strerror(-total_sectors1)); | |
1135 | ret = 4; | |
1136 | goto out; | |
1137 | } | |
1138 | total_sectors2 = bdrv_nb_sectors(bs2); | |
1139 | if (total_sectors2 < 0) { | |
1140 | error_report("Can't get size of %s: %s", | |
1141 | filename2, strerror(-total_sectors2)); | |
1142 | ret = 4; | |
1143 | goto out; | |
1144 | } | |
d14ed18c MR |
1145 | total_sectors = MIN(total_sectors1, total_sectors2); |
1146 | progress_base = MAX(total_sectors1, total_sectors2); | |
1147 | ||
1148 | qemu_progress_print(0, 100); | |
1149 | ||
1150 | if (strict && total_sectors1 != total_sectors2) { | |
1151 | ret = 1; | |
1152 | qprintf(quiet, "Strict mode: Image size mismatch!\n"); | |
1153 | goto out; | |
1154 | } | |
1155 | ||
1156 | for (;;) { | |
1157 | nb_sectors = sectors_to_process(total_sectors, sector_num); | |
1158 | if (nb_sectors <= 0) { | |
1159 | break; | |
1160 | } | |
1161 | allocated1 = bdrv_is_allocated_above(bs1, NULL, sector_num, nb_sectors, | |
1162 | &pnum1); | |
1163 | if (allocated1 < 0) { | |
1164 | ret = 3; | |
1165 | error_report("Sector allocation test failed for %s", filename1); | |
1166 | goto out; | |
1167 | } | |
1168 | ||
1169 | allocated2 = bdrv_is_allocated_above(bs2, NULL, sector_num, nb_sectors, | |
1170 | &pnum2); | |
1171 | if (allocated2 < 0) { | |
1172 | ret = 3; | |
1173 | error_report("Sector allocation test failed for %s", filename2); | |
1174 | goto out; | |
1175 | } | |
1176 | nb_sectors = MIN(pnum1, pnum2); | |
1177 | ||
1178 | if (allocated1 == allocated2) { | |
1179 | if (allocated1) { | |
1180 | ret = bdrv_read(bs1, sector_num, buf1, nb_sectors); | |
1181 | if (ret < 0) { | |
1182 | error_report("Error while reading offset %" PRId64 " of %s:" | |
1183 | " %s", sectors_to_bytes(sector_num), filename1, | |
1184 | strerror(-ret)); | |
1185 | ret = 4; | |
1186 | goto out; | |
1187 | } | |
1188 | ret = bdrv_read(bs2, sector_num, buf2, nb_sectors); | |
1189 | if (ret < 0) { | |
1190 | error_report("Error while reading offset %" PRId64 | |
1191 | " of %s: %s", sectors_to_bytes(sector_num), | |
1192 | filename2, strerror(-ret)); | |
1193 | ret = 4; | |
1194 | goto out; | |
1195 | } | |
1196 | ret = compare_sectors(buf1, buf2, nb_sectors, &pnum); | |
1197 | if (ret || pnum != nb_sectors) { | |
d14ed18c MR |
1198 | qprintf(quiet, "Content mismatch at offset %" PRId64 "!\n", |
1199 | sectors_to_bytes( | |
1200 | ret ? sector_num : sector_num + pnum)); | |
36452f12 | 1201 | ret = 1; |
d14ed18c MR |
1202 | goto out; |
1203 | } | |
1204 | } | |
1205 | } else { | |
1206 | if (strict) { | |
1207 | ret = 1; | |
1208 | qprintf(quiet, "Strict mode: Offset %" PRId64 | |
1209 | " allocation mismatch!\n", | |
1210 | sectors_to_bytes(sector_num)); | |
1211 | goto out; | |
1212 | } | |
1213 | ||
1214 | if (allocated1) { | |
1215 | ret = check_empty_sectors(bs1, sector_num, nb_sectors, | |
1216 | filename1, buf1, quiet); | |
1217 | } else { | |
1218 | ret = check_empty_sectors(bs2, sector_num, nb_sectors, | |
1219 | filename2, buf1, quiet); | |
1220 | } | |
1221 | if (ret) { | |
1222 | if (ret < 0) { | |
d14ed18c MR |
1223 | error_report("Error while reading offset %" PRId64 ": %s", |
1224 | sectors_to_bytes(sector_num), strerror(-ret)); | |
36452f12 | 1225 | ret = 4; |
d14ed18c MR |
1226 | } |
1227 | goto out; | |
1228 | } | |
1229 | } | |
1230 | sector_num += nb_sectors; | |
1231 | qemu_progress_print(((float) nb_sectors / progress_base)*100, 100); | |
1232 | } | |
1233 | ||
1234 | if (total_sectors1 != total_sectors2) { | |
1235 | BlockDriverState *bs_over; | |
1236 | int64_t total_sectors_over; | |
1237 | const char *filename_over; | |
1238 | ||
1239 | qprintf(quiet, "Warning: Image size mismatch!\n"); | |
1240 | if (total_sectors1 > total_sectors2) { | |
1241 | total_sectors_over = total_sectors1; | |
1242 | bs_over = bs1; | |
1243 | filename_over = filename1; | |
1244 | } else { | |
1245 | total_sectors_over = total_sectors2; | |
1246 | bs_over = bs2; | |
1247 | filename_over = filename2; | |
1248 | } | |
1249 | ||
1250 | for (;;) { | |
1251 | nb_sectors = sectors_to_process(total_sectors_over, sector_num); | |
1252 | if (nb_sectors <= 0) { | |
1253 | break; | |
1254 | } | |
1255 | ret = bdrv_is_allocated_above(bs_over, NULL, sector_num, | |
1256 | nb_sectors, &pnum); | |
1257 | if (ret < 0) { | |
1258 | ret = 3; | |
1259 | error_report("Sector allocation test failed for %s", | |
1260 | filename_over); | |
1261 | goto out; | |
1262 | ||
1263 | } | |
1264 | nb_sectors = pnum; | |
1265 | if (ret) { | |
1266 | ret = check_empty_sectors(bs_over, sector_num, nb_sectors, | |
1267 | filename_over, buf1, quiet); | |
1268 | if (ret) { | |
1269 | if (ret < 0) { | |
d14ed18c MR |
1270 | error_report("Error while reading offset %" PRId64 |
1271 | " of %s: %s", sectors_to_bytes(sector_num), | |
1272 | filename_over, strerror(-ret)); | |
36452f12 | 1273 | ret = 4; |
d14ed18c MR |
1274 | } |
1275 | goto out; | |
1276 | } | |
1277 | } | |
1278 | sector_num += nb_sectors; | |
1279 | qemu_progress_print(((float) nb_sectors / progress_base)*100, 100); | |
1280 | } | |
1281 | } | |
1282 | ||
1283 | qprintf(quiet, "Images are identical.\n"); | |
1284 | ret = 0; | |
1285 | ||
1286 | out: | |
d14ed18c MR |
1287 | qemu_vfree(buf1); |
1288 | qemu_vfree(buf2); | |
26f54e9a | 1289 | blk_unref(blk2); |
d14ed18c | 1290 | out2: |
26f54e9a | 1291 | blk_unref(blk1); |
d14ed18c MR |
1292 | out3: |
1293 | qemu_progress_end(); | |
1294 | return ret; | |
1295 | } | |
1296 | ||
ea2384d3 FB |
1297 | static int img_convert(int argc, char **argv) |
1298 | { | |
24f833cd | 1299 | int c, n, n1, bs_n, bs_i, compress, cluster_sectors, skip_create; |
13c28af8 | 1300 | int64_t ret = 0; |
40055951 HR |
1301 | int progress = 0, flags, src_flags; |
1302 | const char *fmt, *out_fmt, *cache, *src_cache, *out_baseimg, *out_filename; | |
b50cbabc | 1303 | BlockDriver *drv, *proto_drv; |
26f54e9a | 1304 | BlockBackend **blk = NULL, *out_blk = NULL; |
c2abccec | 1305 | BlockDriverState **bs = NULL, *out_bs = NULL; |
802c3d4c | 1306 | int64_t total_sectors, nb_sectors, sector_num, bs_offset; |
52bf1e72 | 1307 | int64_t *bs_sectors = NULL; |
c2abccec | 1308 | uint8_t * buf = NULL; |
f2521c90 | 1309 | size_t bufsectors = IO_BUF_SIZE / BDRV_SECTOR_SIZE; |
ea2384d3 | 1310 | const uint8_t *buf1; |
faea38e7 | 1311 | BlockDriverInfo bdi; |
83d0521a CL |
1312 | QemuOpts *opts = NULL; |
1313 | QemuOptsList *create_opts = NULL; | |
1314 | const char *out_baseimg_param; | |
efa84d43 | 1315 | char *options = NULL; |
51ef6727 | 1316 | const char *snapshot_name = NULL; |
a22f123c | 1317 | int min_sparse = 8; /* Need at least 4k of zeros for sparse detection */ |
f382d43a | 1318 | bool quiet = false; |
cc84d90f | 1319 | Error *local_err = NULL; |
ef80654d | 1320 | QemuOpts *sn_opts = NULL; |
ea2384d3 FB |
1321 | |
1322 | fmt = NULL; | |
1323 | out_fmt = "raw"; | |
661a0f71 | 1324 | cache = "unsafe"; |
40055951 | 1325 | src_cache = BDRV_DEFAULT_CACHE; |
f58c7b35 | 1326 | out_baseimg = NULL; |
eec77d9e | 1327 | compress = 0; |
b2e10493 | 1328 | skip_create = 0; |
ea2384d3 | 1329 | for(;;) { |
40055951 | 1330 | c = getopt(argc, argv, "hf:O:B:ce6o:s:l:S:pt:T:qn"); |
b8fb60da | 1331 | if (c == -1) { |
ea2384d3 | 1332 | break; |
b8fb60da | 1333 | } |
ea2384d3 | 1334 | switch(c) { |
ef87394c | 1335 | case '?': |
ea2384d3 FB |
1336 | case 'h': |
1337 | help(); | |
1338 | break; | |
1339 | case 'f': | |
1340 | fmt = optarg; | |
1341 | break; | |
1342 | case 'O': | |
1343 | out_fmt = optarg; | |
1344 | break; | |
f58c7b35 TS |
1345 | case 'B': |
1346 | out_baseimg = optarg; | |
1347 | break; | |
ea2384d3 | 1348 | case 'c': |
eec77d9e | 1349 | compress = 1; |
ea2384d3 FB |
1350 | break; |
1351 | case 'e': | |
9d42e15d | 1352 | error_report("option -e is deprecated, please use \'-o " |
eec77d9e | 1353 | "encryption\' instead!"); |
2dc8328b | 1354 | ret = -1; |
64bb01aa | 1355 | goto fail_getopt; |
ec36ba14 | 1356 | case '6': |
9d42e15d | 1357 | error_report("option -6 is deprecated, please use \'-o " |
eec77d9e | 1358 | "compat6\' instead!"); |
2dc8328b | 1359 | ret = -1; |
64bb01aa | 1360 | goto fail_getopt; |
efa84d43 | 1361 | case 'o': |
2dc8328b KW |
1362 | if (!is_valid_option_list(optarg)) { |
1363 | error_report("Invalid option list: %s", optarg); | |
1364 | ret = -1; | |
64bb01aa | 1365 | goto fail_getopt; |
2dc8328b KW |
1366 | } |
1367 | if (!options) { | |
1368 | options = g_strdup(optarg); | |
1369 | } else { | |
1370 | char *old_options = options; | |
1371 | options = g_strdup_printf("%s,%s", options, optarg); | |
1372 | g_free(old_options); | |
1373 | } | |
efa84d43 | 1374 | break; |
51ef6727 | 1375 | case 's': |
1376 | snapshot_name = optarg; | |
1377 | break; | |
ef80654d WX |
1378 | case 'l': |
1379 | if (strstart(optarg, SNAPSHOT_OPT_BASE, NULL)) { | |
1380 | sn_opts = qemu_opts_parse(&internal_snapshot_opts, optarg, 0); | |
1381 | if (!sn_opts) { | |
1382 | error_report("Failed in parsing snapshot param '%s'", | |
1383 | optarg); | |
2dc8328b | 1384 | ret = -1; |
64bb01aa | 1385 | goto fail_getopt; |
ef80654d WX |
1386 | } |
1387 | } else { | |
1388 | snapshot_name = optarg; | |
1389 | } | |
1390 | break; | |
a22f123c KW |
1391 | case 'S': |
1392 | { | |
1393 | int64_t sval; | |
e36b3695 MA |
1394 | char *end; |
1395 | sval = strtosz_suffix(optarg, &end, STRTOSZ_DEFSUFFIX_B); | |
1396 | if (sval < 0 || *end) { | |
a22f123c | 1397 | error_report("Invalid minimum zero buffer size for sparse output specified"); |
2dc8328b | 1398 | ret = -1; |
64bb01aa | 1399 | goto fail_getopt; |
a22f123c KW |
1400 | } |
1401 | ||
1402 | min_sparse = sval / BDRV_SECTOR_SIZE; | |
1403 | break; | |
1404 | } | |
6b837bc4 JS |
1405 | case 'p': |
1406 | progress = 1; | |
1407 | break; | |
661a0f71 FS |
1408 | case 't': |
1409 | cache = optarg; | |
1410 | break; | |
40055951 HR |
1411 | case 'T': |
1412 | src_cache = optarg; | |
1413 | break; | |
f382d43a MR |
1414 | case 'q': |
1415 | quiet = true; | |
1416 | break; | |
b2e10493 AD |
1417 | case 'n': |
1418 | skip_create = 1; | |
1419 | break; | |
ea2384d3 FB |
1420 | } |
1421 | } | |
3b46e624 | 1422 | |
64bb01aa | 1423 | /* Initialize before goto out */ |
f382d43a MR |
1424 | if (quiet) { |
1425 | progress = 0; | |
1426 | } | |
64bb01aa KW |
1427 | qemu_progress_init(progress, 1.0); |
1428 | ||
f382d43a | 1429 | |
926c2d23 | 1430 | bs_n = argc - optind - 1; |
a283cb6e | 1431 | out_filename = bs_n >= 1 ? argv[argc - 1] : NULL; |
f58c7b35 | 1432 | |
2dc8328b | 1433 | if (options && has_help_option(options)) { |
4ac8aacd JS |
1434 | ret = print_block_option_help(out_filename, out_fmt); |
1435 | goto out; | |
1436 | } | |
1437 | ||
a283cb6e | 1438 | if (bs_n < 1) { |
ac1307ab | 1439 | error_exit("Must specify image file name"); |
a283cb6e KW |
1440 | } |
1441 | ||
1442 | ||
c2abccec | 1443 | if (bs_n > 1 && out_baseimg) { |
15654a6d JS |
1444 | error_report("-B makes no sense when concatenating multiple input " |
1445 | "images"); | |
31ca34b8 JS |
1446 | ret = -1; |
1447 | goto out; | |
c2abccec | 1448 | } |
f8111c24 | 1449 | |
40055951 HR |
1450 | src_flags = BDRV_O_FLAGS; |
1451 | ret = bdrv_parse_cache_flags(src_cache, &src_flags); | |
1452 | if (ret < 0) { | |
1453 | error_report("Invalid source cache option: %s", src_cache); | |
1454 | goto out; | |
1455 | } | |
1456 | ||
6b837bc4 JS |
1457 | qemu_progress_print(0, 100); |
1458 | ||
26f54e9a | 1459 | blk = g_new0(BlockBackend *, bs_n); |
d739f1c4 | 1460 | bs = g_new0(BlockDriverState *, bs_n); |
52bf1e72 | 1461 | bs_sectors = g_new(int64_t, bs_n); |
926c2d23 AZ |
1462 | |
1463 | total_sectors = 0; | |
1464 | for (bs_i = 0; bs_i < bs_n; bs_i++) { | |
9aebf3b8 | 1465 | char *id = bs_n > 1 ? g_strdup_printf("source_%d", bs_i) |
9ffe3332 | 1466 | : g_strdup("source"); |
7e7d56d9 MA |
1467 | blk[bs_i] = img_open(id, argv[optind + bs_i], fmt, src_flags, |
1468 | true, quiet); | |
9ffe3332 | 1469 | g_free(id); |
7e7d56d9 | 1470 | if (!blk[bs_i]) { |
15654a6d | 1471 | error_report("Could not open '%s'", argv[optind + bs_i]); |
c2abccec MK |
1472 | ret = -1; |
1473 | goto out; | |
1474 | } | |
7e7d56d9 | 1475 | bs[bs_i] = blk_bs(blk[bs_i]); |
52bf1e72 MA |
1476 | bs_sectors[bs_i] = bdrv_nb_sectors(bs[bs_i]); |
1477 | if (bs_sectors[bs_i] < 0) { | |
1478 | error_report("Could not get size of %s: %s", | |
1479 | argv[optind + bs_i], strerror(-bs_sectors[bs_i])); | |
1480 | ret = -1; | |
1481 | goto out; | |
1482 | } | |
d739f1c4 | 1483 | total_sectors += bs_sectors[bs_i]; |
926c2d23 | 1484 | } |
ea2384d3 | 1485 | |
ef80654d WX |
1486 | if (sn_opts) { |
1487 | ret = bdrv_snapshot_load_tmp(bs[0], | |
1488 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_ID), | |
1489 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_NAME), | |
1490 | &local_err); | |
1491 | } else if (snapshot_name != NULL) { | |
51ef6727 | 1492 | if (bs_n > 1) { |
6daf194d | 1493 | error_report("No support for concatenating multiple snapshot"); |
51ef6727 | 1494 | ret = -1; |
1495 | goto out; | |
1496 | } | |
7b4c4781 WX |
1497 | |
1498 | bdrv_snapshot_load_tmp_by_id_or_name(bs[0], snapshot_name, &local_err); | |
ef80654d | 1499 | } |
84d18f06 | 1500 | if (local_err) { |
ef80654d WX |
1501 | error_report("Failed to load snapshot: %s", |
1502 | error_get_pretty(local_err)); | |
1503 | error_free(local_err); | |
1504 | ret = -1; | |
1505 | goto out; | |
51ef6727 | 1506 | } |
1507 | ||
efa84d43 | 1508 | /* Find driver and parse its options */ |
ea2384d3 | 1509 | drv = bdrv_find_format(out_fmt); |
c2abccec | 1510 | if (!drv) { |
15654a6d | 1511 | error_report("Unknown file format '%s'", out_fmt); |
c2abccec MK |
1512 | ret = -1; |
1513 | goto out; | |
1514 | } | |
efa84d43 | 1515 | |
98289620 | 1516 | proto_drv = bdrv_find_protocol(out_filename, true); |
c2abccec | 1517 | if (!proto_drv) { |
15654a6d | 1518 | error_report("Unknown protocol '%s'", out_filename); |
c2abccec MK |
1519 | ret = -1; |
1520 | goto out; | |
1521 | } | |
b50cbabc | 1522 | |
c282e1fd CL |
1523 | create_opts = qemu_opts_append(create_opts, drv->create_opts); |
1524 | create_opts = qemu_opts_append(create_opts, proto_drv->create_opts); | |
db08adf5 | 1525 | |
83d0521a CL |
1526 | opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); |
1527 | if (options && qemu_opts_do_parse(opts, options, NULL)) { | |
1528 | error_report("Invalid options for file format '%s'", out_fmt); | |
1529 | ret = -1; | |
1530 | goto out; | |
efa84d43 KW |
1531 | } |
1532 | ||
83d0521a CL |
1533 | qemu_opt_set_number(opts, BLOCK_OPT_SIZE, total_sectors * 512); |
1534 | ret = add_old_style_options(out_fmt, opts, out_baseimg, NULL); | |
c2abccec MK |
1535 | if (ret < 0) { |
1536 | goto out; | |
1537 | } | |
efa84d43 | 1538 | |
a18953fb | 1539 | /* Get backing file name if -o backing_file was used */ |
83d0521a | 1540 | out_baseimg_param = qemu_opt_get(opts, BLOCK_OPT_BACKING_FILE); |
a18953fb | 1541 | if (out_baseimg_param) { |
83d0521a | 1542 | out_baseimg = out_baseimg_param; |
a18953fb KW |
1543 | } |
1544 | ||
efa84d43 | 1545 | /* Check if compression is supported */ |
eec77d9e | 1546 | if (compress) { |
83d0521a CL |
1547 | bool encryption = |
1548 | qemu_opt_get_bool(opts, BLOCK_OPT_ENCRYPT, false); | |
1549 | const char *preallocation = | |
1550 | qemu_opt_get(opts, BLOCK_OPT_PREALLOC); | |
efa84d43 KW |
1551 | |
1552 | if (!drv->bdrv_write_compressed) { | |
15654a6d | 1553 | error_report("Compression not supported for this file format"); |
c2abccec MK |
1554 | ret = -1; |
1555 | goto out; | |
efa84d43 KW |
1556 | } |
1557 | ||
83d0521a | 1558 | if (encryption) { |
15654a6d JS |
1559 | error_report("Compression and encryption not supported at " |
1560 | "the same time"); | |
c2abccec MK |
1561 | ret = -1; |
1562 | goto out; | |
efa84d43 | 1563 | } |
41521fa4 | 1564 | |
83d0521a CL |
1565 | if (preallocation |
1566 | && strcmp(preallocation, "off")) | |
41521fa4 KW |
1567 | { |
1568 | error_report("Compression and preallocation not supported at " | |
1569 | "the same time"); | |
1570 | ret = -1; | |
1571 | goto out; | |
1572 | } | |
efa84d43 KW |
1573 | } |
1574 | ||
b2e10493 AD |
1575 | if (!skip_create) { |
1576 | /* Create the new image */ | |
c282e1fd | 1577 | ret = bdrv_create(drv, out_filename, opts, &local_err); |
b2e10493 | 1578 | if (ret < 0) { |
cc84d90f HR |
1579 | error_report("%s: error while converting %s: %s", |
1580 | out_filename, out_fmt, error_get_pretty(local_err)); | |
1581 | error_free(local_err); | |
b2e10493 | 1582 | goto out; |
ea2384d3 FB |
1583 | } |
1584 | } | |
3b46e624 | 1585 | |
5a37b60a | 1586 | flags = min_sparse ? (BDRV_O_RDWR | BDRV_O_UNMAP) : BDRV_O_RDWR; |
c3993cdc | 1587 | ret = bdrv_parse_cache_flags(cache, &flags); |
661a0f71 FS |
1588 | if (ret < 0) { |
1589 | error_report("Invalid cache option: %s", cache); | |
bb9cd2ee | 1590 | goto out; |
661a0f71 FS |
1591 | } |
1592 | ||
7e7d56d9 MA |
1593 | out_blk = img_open("target", out_filename, out_fmt, flags, true, quiet); |
1594 | if (!out_blk) { | |
c2abccec MK |
1595 | ret = -1; |
1596 | goto out; | |
1597 | } | |
7e7d56d9 | 1598 | out_bs = blk_bs(out_blk); |
ea2384d3 | 1599 | |
926c2d23 AZ |
1600 | bs_i = 0; |
1601 | bs_offset = 0; | |
f2521c90 PL |
1602 | |
1603 | /* increase bufsectors from the default 4096 (2M) if opt_transfer_length | |
1604 | * or discard_alignment of the out_bs is greater. Limit to 32768 (16MB) | |
1605 | * as maximum. */ | |
1606 | bufsectors = MIN(32768, | |
1607 | MAX(bufsectors, MAX(out_bs->bl.opt_transfer_length, | |
1608 | out_bs->bl.discard_alignment)) | |
1609 | ); | |
1610 | ||
1611 | buf = qemu_blockalign(out_bs, bufsectors * BDRV_SECTOR_SIZE); | |
926c2d23 | 1612 | |
b2e10493 | 1613 | if (skip_create) { |
43716fa8 MA |
1614 | int64_t output_sectors = bdrv_nb_sectors(out_bs); |
1615 | if (output_sectors < 0) { | |
b2e10493 | 1616 | error_report("unable to get output image length: %s\n", |
43716fa8 | 1617 | strerror(-output_sectors)); |
b2e10493 AD |
1618 | ret = -1; |
1619 | goto out; | |
43716fa8 | 1620 | } else if (output_sectors < total_sectors) { |
b2e10493 AD |
1621 | error_report("output file is smaller than input file"); |
1622 | ret = -1; | |
1623 | goto out; | |
1624 | } | |
1625 | } | |
1626 | ||
24f833cd PL |
1627 | cluster_sectors = 0; |
1628 | ret = bdrv_get_info(out_bs, &bdi); | |
1629 | if (ret < 0) { | |
1630 | if (compress) { | |
15654a6d | 1631 | error_report("could not get block driver info"); |
c2abccec MK |
1632 | goto out; |
1633 | } | |
24f833cd | 1634 | } else { |
85f49cad | 1635 | compress = compress || bdi.needs_compressed_writes; |
24f833cd PL |
1636 | cluster_sectors = bdi.cluster_size / BDRV_SECTOR_SIZE; |
1637 | } | |
1638 | ||
1639 | if (compress) { | |
1640 | if (cluster_sectors <= 0 || cluster_sectors > bufsectors) { | |
15654a6d | 1641 | error_report("invalid cluster size"); |
c2abccec MK |
1642 | ret = -1; |
1643 | goto out; | |
1644 | } | |
ea2384d3 | 1645 | sector_num = 0; |
6b837bc4 JS |
1646 | |
1647 | nb_sectors = total_sectors; | |
6b837bc4 | 1648 | |
ea2384d3 | 1649 | for(;;) { |
926c2d23 AZ |
1650 | int64_t bs_num; |
1651 | int remainder; | |
1652 | uint8_t *buf2; | |
1653 | ||
ea2384d3 FB |
1654 | nb_sectors = total_sectors - sector_num; |
1655 | if (nb_sectors <= 0) | |
1656 | break; | |
1657 | if (nb_sectors >= cluster_sectors) | |
1658 | n = cluster_sectors; | |
1659 | else | |
1660 | n = nb_sectors; | |
926c2d23 AZ |
1661 | |
1662 | bs_num = sector_num - bs_offset; | |
1663 | assert (bs_num >= 0); | |
1664 | remainder = n; | |
1665 | buf2 = buf; | |
1666 | while (remainder > 0) { | |
1667 | int nlow; | |
d739f1c4 MA |
1668 | while (bs_num == bs_sectors[bs_i]) { |
1669 | bs_offset += bs_sectors[bs_i]; | |
926c2d23 AZ |
1670 | bs_i++; |
1671 | assert (bs_i < bs_n); | |
926c2d23 | 1672 | bs_num = 0; |
0bfcd599 BS |
1673 | /* printf("changing part: sector_num=%" PRId64 ", " |
1674 | "bs_i=%d, bs_offset=%" PRId64 ", bs_sectors=%" PRId64 | |
d739f1c4 | 1675 | "\n", sector_num, bs_i, bs_offset, bs_sectors[bs_i]); */ |
926c2d23 | 1676 | } |
d739f1c4 | 1677 | assert (bs_num < bs_sectors[bs_i]); |
926c2d23 | 1678 | |
d739f1c4 MA |
1679 | nlow = remainder > bs_sectors[bs_i] - bs_num |
1680 | ? bs_sectors[bs_i] - bs_num : remainder; | |
926c2d23 | 1681 | |
c2abccec MK |
1682 | ret = bdrv_read(bs[bs_i], bs_num, buf2, nlow); |
1683 | if (ret < 0) { | |
3fba9d81 SH |
1684 | error_report("error while reading sector %" PRId64 ": %s", |
1685 | bs_num, strerror(-ret)); | |
c2abccec MK |
1686 | goto out; |
1687 | } | |
926c2d23 AZ |
1688 | |
1689 | buf2 += nlow * 512; | |
1690 | bs_num += nlow; | |
1691 | ||
1692 | remainder -= nlow; | |
1693 | } | |
1694 | assert (remainder == 0); | |
1695 | ||
54f106d5 SH |
1696 | if (!buffer_is_zero(buf, n * BDRV_SECTOR_SIZE)) { |
1697 | ret = bdrv_write_compressed(out_bs, sector_num, buf, n); | |
c2abccec | 1698 | if (ret != 0) { |
3fba9d81 SH |
1699 | error_report("error while compressing sector %" PRId64 |
1700 | ": %s", sector_num, strerror(-ret)); | |
c2abccec MK |
1701 | goto out; |
1702 | } | |
ea2384d3 FB |
1703 | } |
1704 | sector_num += n; | |
13c28af8 | 1705 | qemu_progress_print(100.0 * sector_num / total_sectors, 0); |
ea2384d3 | 1706 | } |
faea38e7 FB |
1707 | /* signal EOF to align */ |
1708 | bdrv_write_compressed(out_bs, 0, NULL, 0); | |
ea2384d3 | 1709 | } else { |
802c3d4c PL |
1710 | int64_t sectors_to_read, sectors_read, sector_num_next_status; |
1711 | bool count_allocated_sectors; | |
11b6699a | 1712 | int has_zero_init = min_sparse ? bdrv_has_zero_init(out_bs) : 0; |
f2feebbd | 1713 | |
5a37b60a PL |
1714 | if (!has_zero_init && bdrv_can_write_zeroes_with_unmap(out_bs)) { |
1715 | ret = bdrv_make_zero(out_bs, BDRV_REQ_MAY_UNMAP); | |
1716 | if (ret < 0) { | |
1717 | goto out; | |
1718 | } | |
1719 | has_zero_init = 1; | |
1720 | } | |
1721 | ||
802c3d4c PL |
1722 | sectors_to_read = total_sectors; |
1723 | count_allocated_sectors = progress && (out_baseimg || has_zero_init); | |
1724 | restart: | |
f58c7b35 | 1725 | sector_num = 0; // total number of sectors converted so far |
802c3d4c PL |
1726 | sectors_read = 0; |
1727 | sector_num_next_status = 0; | |
6b837bc4 | 1728 | |
ea2384d3 FB |
1729 | for(;;) { |
1730 | nb_sectors = total_sectors - sector_num; | |
b8fb60da | 1731 | if (nb_sectors <= 0) { |
802c3d4c PL |
1732 | if (count_allocated_sectors) { |
1733 | sectors_to_read = sectors_read; | |
1734 | count_allocated_sectors = false; | |
1735 | goto restart; | |
1736 | } | |
13c28af8 | 1737 | ret = 0; |
ea2384d3 | 1738 | break; |
b8fb60da | 1739 | } |
926c2d23 | 1740 | |
d739f1c4 MA |
1741 | while (sector_num - bs_offset >= bs_sectors[bs_i]) { |
1742 | bs_offset += bs_sectors[bs_i]; | |
926c2d23 AZ |
1743 | bs_i ++; |
1744 | assert (bs_i < bs_n); | |
0bfcd599 BS |
1745 | /* printf("changing part: sector_num=%" PRId64 ", bs_i=%d, " |
1746 | "bs_offset=%" PRId64 ", bs_sectors=%" PRId64 "\n", | |
d739f1c4 | 1747 | sector_num, bs_i, bs_offset, bs_sectors[bs_i]); */ |
926c2d23 AZ |
1748 | } |
1749 | ||
13c28af8 PL |
1750 | if ((out_baseimg || has_zero_init) && |
1751 | sector_num >= sector_num_next_status) { | |
1752 | n = nb_sectors > INT_MAX ? INT_MAX : nb_sectors; | |
1753 | ret = bdrv_get_block_status(bs[bs_i], sector_num - bs_offset, | |
1754 | n, &n1); | |
e4a86f88 | 1755 | if (ret < 0) { |
13c28af8 PL |
1756 | error_report("error while reading block status of sector %" |
1757 | PRId64 ": %s", sector_num - bs_offset, | |
1758 | strerror(-ret)); | |
e4a86f88 PB |
1759 | goto out; |
1760 | } | |
13c28af8 PL |
1761 | /* If the output image is zero initialized, we are not working |
1762 | * on a shared base and the input is zero we can skip the next | |
1763 | * n1 sectors */ | |
1764 | if (has_zero_init && !out_baseimg && (ret & BDRV_BLOCK_ZERO)) { | |
e4a86f88 PB |
1765 | sector_num += n1; |
1766 | continue; | |
93c65b47 | 1767 | } |
13c28af8 PL |
1768 | /* If the output image is being created as a copy on write |
1769 | * image, assume that sectors which are unallocated in the | |
1770 | * input image are present in both the output's and input's | |
1771 | * base images (no need to copy them). */ | |
1772 | if (out_baseimg) { | |
1773 | if (!(ret & BDRV_BLOCK_DATA)) { | |
1774 | sector_num += n1; | |
1775 | continue; | |
1776 | } | |
1777 | /* The next 'n1' sectors are allocated in the input image. | |
1778 | * Copy only those as they may be followed by unallocated | |
1779 | * sectors. */ | |
1780 | nb_sectors = n1; | |
1781 | } | |
1782 | /* avoid redundant callouts to get_block_status */ | |
1783 | sector_num_next_status = sector_num + n1; | |
f58c7b35 TS |
1784 | } |
1785 | ||
f2521c90 | 1786 | n = MIN(nb_sectors, bufsectors); |
24f833cd PL |
1787 | |
1788 | /* round down request length to an aligned sector, but | |
1789 | * do not bother doing this on short requests. They happen | |
1790 | * when we found an all-zero area, and the next sector to | |
1791 | * write will not be sector_num + n. */ | |
1792 | if (cluster_sectors > 0 && n >= cluster_sectors) { | |
1793 | int64_t next_aligned_sector = (sector_num + n); | |
1794 | next_aligned_sector -= next_aligned_sector % cluster_sectors; | |
1795 | if (sector_num + n > next_aligned_sector) { | |
1796 | n = next_aligned_sector - sector_num; | |
1797 | } | |
1798 | } | |
1799 | ||
d739f1c4 | 1800 | n = MIN(n, bs_sectors[bs_i] - (sector_num - bs_offset)); |
13c28af8 | 1801 | |
802c3d4c PL |
1802 | sectors_read += n; |
1803 | if (count_allocated_sectors) { | |
1804 | sector_num += n; | |
1805 | continue; | |
1806 | } | |
1807 | ||
1808 | n1 = n; | |
c2abccec MK |
1809 | ret = bdrv_read(bs[bs_i], sector_num - bs_offset, buf, n); |
1810 | if (ret < 0) { | |
3fba9d81 SH |
1811 | error_report("error while reading sector %" PRId64 ": %s", |
1812 | sector_num - bs_offset, strerror(-ret)); | |
c2abccec MK |
1813 | goto out; |
1814 | } | |
ea2384d3 FB |
1815 | /* NOTE: at the same time we convert, we do not write zero |
1816 | sectors to have a chance to compress the image. Ideally, we | |
1817 | should add a specific call to have the info to go faster */ | |
1818 | buf1 = buf; | |
1819 | while (n > 0) { | |
11212d8f | 1820 | if (!has_zero_init || |
a22f123c | 1821 | is_allocated_sectors_min(buf1, n, &n1, min_sparse)) { |
c2abccec MK |
1822 | ret = bdrv_write(out_bs, sector_num, buf1, n1); |
1823 | if (ret < 0) { | |
3fba9d81 SH |
1824 | error_report("error while writing sector %" PRId64 |
1825 | ": %s", sector_num, strerror(-ret)); | |
c2abccec MK |
1826 | goto out; |
1827 | } | |
ea2384d3 FB |
1828 | } |
1829 | sector_num += n1; | |
1830 | n -= n1; | |
1831 | buf1 += n1 * 512; | |
1832 | } | |
802c3d4c | 1833 | qemu_progress_print(100.0 * sectors_read / sectors_to_read, 0); |
ea2384d3 FB |
1834 | } |
1835 | } | |
c2abccec | 1836 | out: |
13c28af8 PL |
1837 | if (!ret) { |
1838 | qemu_progress_print(100, 0); | |
1839 | } | |
6b837bc4 | 1840 | qemu_progress_end(); |
83d0521a CL |
1841 | qemu_opts_del(opts); |
1842 | qemu_opts_free(create_opts); | |
bb1c0597 | 1843 | qemu_vfree(buf); |
fbf28a43 | 1844 | qemu_opts_del(sn_opts); |
26f54e9a | 1845 | blk_unref(out_blk); |
9ba10c95 | 1846 | g_free(bs); |
26f54e9a MA |
1847 | if (blk) { |
1848 | for (bs_i = 0; bs_i < bs_n; bs_i++) { | |
1849 | blk_unref(blk[bs_i]); | |
1850 | } | |
1851 | g_free(blk); | |
1852 | } | |
d739f1c4 | 1853 | g_free(bs_sectors); |
64bb01aa KW |
1854 | fail_getopt: |
1855 | g_free(options); | |
1856 | ||
c2abccec MK |
1857 | if (ret) { |
1858 | return 1; | |
1859 | } | |
ea2384d3 FB |
1860 | return 0; |
1861 | } | |
1862 | ||
57d1a2b6 | 1863 | |
faea38e7 FB |
1864 | static void dump_snapshots(BlockDriverState *bs) |
1865 | { | |
1866 | QEMUSnapshotInfo *sn_tab, *sn; | |
1867 | int nb_sns, i; | |
faea38e7 FB |
1868 | |
1869 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
1870 | if (nb_sns <= 0) | |
1871 | return; | |
1872 | printf("Snapshot list:\n"); | |
5b917044 WX |
1873 | bdrv_snapshot_dump(fprintf, stdout, NULL); |
1874 | printf("\n"); | |
faea38e7 FB |
1875 | for(i = 0; i < nb_sns; i++) { |
1876 | sn = &sn_tab[i]; | |
5b917044 WX |
1877 | bdrv_snapshot_dump(fprintf, stdout, sn); |
1878 | printf("\n"); | |
faea38e7 | 1879 | } |
7267c094 | 1880 | g_free(sn_tab); |
faea38e7 FB |
1881 | } |
1882 | ||
9699bf0d SH |
1883 | static void dump_json_image_info_list(ImageInfoList *list) |
1884 | { | |
4399c438 | 1885 | Error *local_err = NULL; |
9699bf0d SH |
1886 | QString *str; |
1887 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
1888 | QObject *obj; | |
1889 | visit_type_ImageInfoList(qmp_output_get_visitor(ov), | |
4399c438 | 1890 | &list, NULL, &local_err); |
9699bf0d SH |
1891 | obj = qmp_output_get_qobject(ov); |
1892 | str = qobject_to_json_pretty(obj); | |
1893 | assert(str != NULL); | |
1894 | printf("%s\n", qstring_get_str(str)); | |
1895 | qobject_decref(obj); | |
1896 | qmp_output_visitor_cleanup(ov); | |
1897 | QDECREF(str); | |
1898 | } | |
1899 | ||
c054b3fd BC |
1900 | static void dump_json_image_info(ImageInfo *info) |
1901 | { | |
4399c438 | 1902 | Error *local_err = NULL; |
c054b3fd BC |
1903 | QString *str; |
1904 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
1905 | QObject *obj; | |
1906 | visit_type_ImageInfo(qmp_output_get_visitor(ov), | |
4399c438 | 1907 | &info, NULL, &local_err); |
c054b3fd BC |
1908 | obj = qmp_output_get_qobject(ov); |
1909 | str = qobject_to_json_pretty(obj); | |
1910 | assert(str != NULL); | |
1911 | printf("%s\n", qstring_get_str(str)); | |
1912 | qobject_decref(obj); | |
1913 | qmp_output_visitor_cleanup(ov); | |
1914 | QDECREF(str); | |
1915 | } | |
1916 | ||
9699bf0d SH |
1917 | static void dump_human_image_info_list(ImageInfoList *list) |
1918 | { | |
1919 | ImageInfoList *elem; | |
1920 | bool delim = false; | |
1921 | ||
1922 | for (elem = list; elem; elem = elem->next) { | |
1923 | if (delim) { | |
1924 | printf("\n"); | |
1925 | } | |
1926 | delim = true; | |
1927 | ||
5b917044 | 1928 | bdrv_image_info_dump(fprintf, stdout, elem->value); |
9699bf0d SH |
1929 | } |
1930 | } | |
1931 | ||
1932 | static gboolean str_equal_func(gconstpointer a, gconstpointer b) | |
1933 | { | |
1934 | return strcmp(a, b) == 0; | |
1935 | } | |
1936 | ||
1937 | /** | |
1938 | * Open an image file chain and return an ImageInfoList | |
1939 | * | |
1940 | * @filename: topmost image filename | |
1941 | * @fmt: topmost image format (may be NULL to autodetect) | |
1942 | * @chain: true - enumerate entire backing file chain | |
1943 | * false - only topmost image file | |
1944 | * | |
1945 | * Returns a list of ImageInfo objects or NULL if there was an error opening an | |
1946 | * image file. If there was an error a message will have been printed to | |
1947 | * stderr. | |
1948 | */ | |
1949 | static ImageInfoList *collect_image_info_list(const char *filename, | |
1950 | const char *fmt, | |
1951 | bool chain) | |
1952 | { | |
1953 | ImageInfoList *head = NULL; | |
1954 | ImageInfoList **last = &head; | |
1955 | GHashTable *filenames; | |
43526ec8 | 1956 | Error *err = NULL; |
9699bf0d SH |
1957 | |
1958 | filenames = g_hash_table_new_full(g_str_hash, str_equal_func, NULL, NULL); | |
1959 | ||
1960 | while (filename) { | |
26f54e9a | 1961 | BlockBackend *blk; |
9699bf0d SH |
1962 | BlockDriverState *bs; |
1963 | ImageInfo *info; | |
1964 | ImageInfoList *elem; | |
1965 | ||
1966 | if (g_hash_table_lookup_extended(filenames, filename, NULL, NULL)) { | |
1967 | error_report("Backing file '%s' creates an infinite loop.", | |
1968 | filename); | |
1969 | goto err; | |
1970 | } | |
1971 | g_hash_table_insert(filenames, (gpointer)filename, NULL); | |
1972 | ||
7e7d56d9 MA |
1973 | blk = img_open("image", filename, fmt, |
1974 | BDRV_O_FLAGS | BDRV_O_NO_BACKING, false, false); | |
1975 | if (!blk) { | |
9699bf0d SH |
1976 | goto err; |
1977 | } | |
7e7d56d9 | 1978 | bs = blk_bs(blk); |
9699bf0d | 1979 | |
43526ec8 | 1980 | bdrv_query_image_info(bs, &info, &err); |
84d18f06 | 1981 | if (err) { |
43526ec8 WX |
1982 | error_report("%s", error_get_pretty(err)); |
1983 | error_free(err); | |
26f54e9a | 1984 | blk_unref(blk); |
43526ec8 | 1985 | goto err; |
fb0ed453 | 1986 | } |
9699bf0d SH |
1987 | |
1988 | elem = g_new0(ImageInfoList, 1); | |
1989 | elem->value = info; | |
1990 | *last = elem; | |
1991 | last = &elem->next; | |
1992 | ||
26f54e9a | 1993 | blk_unref(blk); |
9699bf0d SH |
1994 | |
1995 | filename = fmt = NULL; | |
1996 | if (chain) { | |
1997 | if (info->has_full_backing_filename) { | |
1998 | filename = info->full_backing_filename; | |
1999 | } else if (info->has_backing_filename) { | |
2000 | filename = info->backing_filename; | |
2001 | } | |
2002 | if (info->has_backing_filename_format) { | |
2003 | fmt = info->backing_filename_format; | |
2004 | } | |
2005 | } | |
2006 | } | |
2007 | g_hash_table_destroy(filenames); | |
2008 | return head; | |
2009 | ||
2010 | err: | |
2011 | qapi_free_ImageInfoList(head); | |
2012 | g_hash_table_destroy(filenames); | |
2013 | return NULL; | |
2014 | } | |
2015 | ||
c054b3fd BC |
2016 | static int img_info(int argc, char **argv) |
2017 | { | |
2018 | int c; | |
2019 | OutputFormat output_format = OFORMAT_HUMAN; | |
9699bf0d | 2020 | bool chain = false; |
c054b3fd | 2021 | const char *filename, *fmt, *output; |
9699bf0d | 2022 | ImageInfoList *list; |
c054b3fd | 2023 | |
ea2384d3 | 2024 | fmt = NULL; |
c054b3fd | 2025 | output = NULL; |
ea2384d3 | 2026 | for(;;) { |
c054b3fd BC |
2027 | int option_index = 0; |
2028 | static const struct option long_options[] = { | |
2029 | {"help", no_argument, 0, 'h'}, | |
2030 | {"format", required_argument, 0, 'f'}, | |
2031 | {"output", required_argument, 0, OPTION_OUTPUT}, | |
9699bf0d | 2032 | {"backing-chain", no_argument, 0, OPTION_BACKING_CHAIN}, |
c054b3fd BC |
2033 | {0, 0, 0, 0} |
2034 | }; | |
2035 | c = getopt_long(argc, argv, "f:h", | |
2036 | long_options, &option_index); | |
b8fb60da | 2037 | if (c == -1) { |
ea2384d3 | 2038 | break; |
b8fb60da | 2039 | } |
ea2384d3 | 2040 | switch(c) { |
ef87394c | 2041 | case '?': |
ea2384d3 FB |
2042 | case 'h': |
2043 | help(); | |
2044 | break; | |
2045 | case 'f': | |
2046 | fmt = optarg; | |
2047 | break; | |
c054b3fd BC |
2048 | case OPTION_OUTPUT: |
2049 | output = optarg; | |
2050 | break; | |
9699bf0d SH |
2051 | case OPTION_BACKING_CHAIN: |
2052 | chain = true; | |
2053 | break; | |
ea2384d3 FB |
2054 | } |
2055 | } | |
fc11eb26 | 2056 | if (optind != argc - 1) { |
ac1307ab | 2057 | error_exit("Expecting one image file name"); |
b8fb60da | 2058 | } |
ea2384d3 FB |
2059 | filename = argv[optind++]; |
2060 | ||
c054b3fd BC |
2061 | if (output && !strcmp(output, "json")) { |
2062 | output_format = OFORMAT_JSON; | |
2063 | } else if (output && !strcmp(output, "human")) { | |
2064 | output_format = OFORMAT_HUMAN; | |
2065 | } else if (output) { | |
2066 | error_report("--output must be used with human or json as argument."); | |
c2abccec MK |
2067 | return 1; |
2068 | } | |
c054b3fd | 2069 | |
9699bf0d SH |
2070 | list = collect_image_info_list(filename, fmt, chain); |
2071 | if (!list) { | |
c2abccec | 2072 | return 1; |
faea38e7 | 2073 | } |
c054b3fd | 2074 | |
c054b3fd BC |
2075 | switch (output_format) { |
2076 | case OFORMAT_HUMAN: | |
9699bf0d | 2077 | dump_human_image_info_list(list); |
c054b3fd BC |
2078 | break; |
2079 | case OFORMAT_JSON: | |
9699bf0d SH |
2080 | if (chain) { |
2081 | dump_json_image_info_list(list); | |
2082 | } else { | |
2083 | dump_json_image_info(list->value); | |
2084 | } | |
c054b3fd | 2085 | break; |
faea38e7 | 2086 | } |
c054b3fd | 2087 | |
9699bf0d | 2088 | qapi_free_ImageInfoList(list); |
ea2384d3 FB |
2089 | return 0; |
2090 | } | |
2091 | ||
4c93a13b PB |
2092 | |
2093 | typedef struct MapEntry { | |
2094 | int flags; | |
2095 | int depth; | |
2096 | int64_t start; | |
2097 | int64_t length; | |
2098 | int64_t offset; | |
2099 | BlockDriverState *bs; | |
2100 | } MapEntry; | |
2101 | ||
2102 | static void dump_map_entry(OutputFormat output_format, MapEntry *e, | |
2103 | MapEntry *next) | |
2104 | { | |
2105 | switch (output_format) { | |
2106 | case OFORMAT_HUMAN: | |
2107 | if ((e->flags & BDRV_BLOCK_DATA) && | |
2108 | !(e->flags & BDRV_BLOCK_OFFSET_VALID)) { | |
2109 | error_report("File contains external, encrypted or compressed clusters."); | |
2110 | exit(1); | |
2111 | } | |
2112 | if ((e->flags & (BDRV_BLOCK_DATA|BDRV_BLOCK_ZERO)) == BDRV_BLOCK_DATA) { | |
2113 | printf("%#-16"PRIx64"%#-16"PRIx64"%#-16"PRIx64"%s\n", | |
2114 | e->start, e->length, e->offset, e->bs->filename); | |
2115 | } | |
2116 | /* This format ignores the distinction between 0, ZERO and ZERO|DATA. | |
2117 | * Modify the flags here to allow more coalescing. | |
2118 | */ | |
2119 | if (next && | |
2120 | (next->flags & (BDRV_BLOCK_DATA|BDRV_BLOCK_ZERO)) != BDRV_BLOCK_DATA) { | |
2121 | next->flags &= ~BDRV_BLOCK_DATA; | |
2122 | next->flags |= BDRV_BLOCK_ZERO; | |
2123 | } | |
2124 | break; | |
2125 | case OFORMAT_JSON: | |
2126 | printf("%s{ \"start\": %"PRId64", \"length\": %"PRId64", \"depth\": %d," | |
2127 | " \"zero\": %s, \"data\": %s", | |
2128 | (e->start == 0 ? "[" : ",\n"), | |
2129 | e->start, e->length, e->depth, | |
2130 | (e->flags & BDRV_BLOCK_ZERO) ? "true" : "false", | |
2131 | (e->flags & BDRV_BLOCK_DATA) ? "true" : "false"); | |
2132 | if (e->flags & BDRV_BLOCK_OFFSET_VALID) { | |
c745bfb4 | 2133 | printf(", \"offset\": %"PRId64"", e->offset); |
4c93a13b PB |
2134 | } |
2135 | putchar('}'); | |
2136 | ||
2137 | if (!next) { | |
2138 | printf("]\n"); | |
2139 | } | |
2140 | break; | |
2141 | } | |
2142 | } | |
2143 | ||
2144 | static int get_block_status(BlockDriverState *bs, int64_t sector_num, | |
2145 | int nb_sectors, MapEntry *e) | |
2146 | { | |
2147 | int64_t ret; | |
2148 | int depth; | |
2149 | ||
2150 | /* As an optimization, we could cache the current range of unallocated | |
2151 | * clusters in each file of the chain, and avoid querying the same | |
2152 | * range repeatedly. | |
2153 | */ | |
2154 | ||
2155 | depth = 0; | |
2156 | for (;;) { | |
2157 | ret = bdrv_get_block_status(bs, sector_num, nb_sectors, &nb_sectors); | |
2158 | if (ret < 0) { | |
2159 | return ret; | |
2160 | } | |
2161 | assert(nb_sectors); | |
2162 | if (ret & (BDRV_BLOCK_ZERO|BDRV_BLOCK_DATA)) { | |
2163 | break; | |
2164 | } | |
2165 | bs = bs->backing_hd; | |
2166 | if (bs == NULL) { | |
2167 | ret = 0; | |
2168 | break; | |
2169 | } | |
2170 | ||
2171 | depth++; | |
2172 | } | |
2173 | ||
2174 | e->start = sector_num * BDRV_SECTOR_SIZE; | |
2175 | e->length = nb_sectors * BDRV_SECTOR_SIZE; | |
2176 | e->flags = ret & ~BDRV_BLOCK_OFFSET_MASK; | |
2177 | e->offset = ret & BDRV_BLOCK_OFFSET_MASK; | |
2178 | e->depth = depth; | |
2179 | e->bs = bs; | |
2180 | return 0; | |
2181 | } | |
2182 | ||
2183 | static int img_map(int argc, char **argv) | |
2184 | { | |
2185 | int c; | |
2186 | OutputFormat output_format = OFORMAT_HUMAN; | |
26f54e9a | 2187 | BlockBackend *blk; |
4c93a13b PB |
2188 | BlockDriverState *bs; |
2189 | const char *filename, *fmt, *output; | |
2190 | int64_t length; | |
2191 | MapEntry curr = { .length = 0 }, next; | |
2192 | int ret = 0; | |
2193 | ||
2194 | fmt = NULL; | |
2195 | output = NULL; | |
2196 | for (;;) { | |
2197 | int option_index = 0; | |
2198 | static const struct option long_options[] = { | |
2199 | {"help", no_argument, 0, 'h'}, | |
2200 | {"format", required_argument, 0, 'f'}, | |
2201 | {"output", required_argument, 0, OPTION_OUTPUT}, | |
2202 | {0, 0, 0, 0} | |
2203 | }; | |
2204 | c = getopt_long(argc, argv, "f:h", | |
2205 | long_options, &option_index); | |
2206 | if (c == -1) { | |
2207 | break; | |
2208 | } | |
2209 | switch (c) { | |
2210 | case '?': | |
2211 | case 'h': | |
2212 | help(); | |
2213 | break; | |
2214 | case 'f': | |
2215 | fmt = optarg; | |
2216 | break; | |
2217 | case OPTION_OUTPUT: | |
2218 | output = optarg; | |
2219 | break; | |
2220 | } | |
2221 | } | |
ac1307ab FZ |
2222 | if (optind != argc - 1) { |
2223 | error_exit("Expecting one image file name"); | |
4c93a13b | 2224 | } |
ac1307ab | 2225 | filename = argv[optind]; |
4c93a13b PB |
2226 | |
2227 | if (output && !strcmp(output, "json")) { | |
2228 | output_format = OFORMAT_JSON; | |
2229 | } else if (output && !strcmp(output, "human")) { | |
2230 | output_format = OFORMAT_HUMAN; | |
2231 | } else if (output) { | |
2232 | error_report("--output must be used with human or json as argument."); | |
2233 | return 1; | |
2234 | } | |
2235 | ||
7e7d56d9 MA |
2236 | blk = img_open("image", filename, fmt, BDRV_O_FLAGS, true, false); |
2237 | if (!blk) { | |
2238 | return 1; | |
4c93a13b | 2239 | } |
7e7d56d9 | 2240 | bs = blk_bs(blk); |
4c93a13b PB |
2241 | |
2242 | if (output_format == OFORMAT_HUMAN) { | |
2243 | printf("%-16s%-16s%-16s%s\n", "Offset", "Length", "Mapped to", "File"); | |
2244 | } | |
2245 | ||
2246 | length = bdrv_getlength(bs); | |
2247 | while (curr.start + curr.length < length) { | |
2248 | int64_t nsectors_left; | |
2249 | int64_t sector_num; | |
2250 | int n; | |
2251 | ||
2252 | sector_num = (curr.start + curr.length) >> BDRV_SECTOR_BITS; | |
2253 | ||
2254 | /* Probe up to 1 GiB at a time. */ | |
2255 | nsectors_left = DIV_ROUND_UP(length, BDRV_SECTOR_SIZE) - sector_num; | |
2256 | n = MIN(1 << (30 - BDRV_SECTOR_BITS), nsectors_left); | |
2257 | ret = get_block_status(bs, sector_num, n, &next); | |
2258 | ||
2259 | if (ret < 0) { | |
2260 | error_report("Could not read file metadata: %s", strerror(-ret)); | |
2261 | goto out; | |
2262 | } | |
2263 | ||
2264 | if (curr.length != 0 && curr.flags == next.flags && | |
2265 | curr.depth == next.depth && | |
2266 | ((curr.flags & BDRV_BLOCK_OFFSET_VALID) == 0 || | |
2267 | curr.offset + curr.length == next.offset)) { | |
2268 | curr.length += next.length; | |
2269 | continue; | |
2270 | } | |
2271 | ||
2272 | if (curr.length > 0) { | |
2273 | dump_map_entry(output_format, &curr, &next); | |
2274 | } | |
2275 | curr = next; | |
2276 | } | |
2277 | ||
2278 | dump_map_entry(output_format, &curr, NULL); | |
2279 | ||
2280 | out: | |
26f54e9a | 2281 | blk_unref(blk); |
4c93a13b PB |
2282 | return ret < 0; |
2283 | } | |
2284 | ||
f7b4a940 AL |
2285 | #define SNAPSHOT_LIST 1 |
2286 | #define SNAPSHOT_CREATE 2 | |
2287 | #define SNAPSHOT_APPLY 3 | |
2288 | #define SNAPSHOT_DELETE 4 | |
2289 | ||
153859be | 2290 | static int img_snapshot(int argc, char **argv) |
f7b4a940 | 2291 | { |
26f54e9a | 2292 | BlockBackend *blk; |
f7b4a940 AL |
2293 | BlockDriverState *bs; |
2294 | QEMUSnapshotInfo sn; | |
2295 | char *filename, *snapshot_name = NULL; | |
c2abccec | 2296 | int c, ret = 0, bdrv_oflags; |
f7b4a940 AL |
2297 | int action = 0; |
2298 | qemu_timeval tv; | |
f382d43a | 2299 | bool quiet = false; |
a89d89d3 | 2300 | Error *err = NULL; |
f7b4a940 | 2301 | |
710da702 | 2302 | bdrv_oflags = BDRV_O_FLAGS | BDRV_O_RDWR; |
f7b4a940 AL |
2303 | /* Parse commandline parameters */ |
2304 | for(;;) { | |
f382d43a | 2305 | c = getopt(argc, argv, "la:c:d:hq"); |
b8fb60da | 2306 | if (c == -1) { |
f7b4a940 | 2307 | break; |
b8fb60da | 2308 | } |
f7b4a940 | 2309 | switch(c) { |
ef87394c | 2310 | case '?': |
f7b4a940 AL |
2311 | case 'h': |
2312 | help(); | |
153859be | 2313 | return 0; |
f7b4a940 AL |
2314 | case 'l': |
2315 | if (action) { | |
ac1307ab | 2316 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2317 | return 0; |
f7b4a940 AL |
2318 | } |
2319 | action = SNAPSHOT_LIST; | |
f5edb014 | 2320 | bdrv_oflags &= ~BDRV_O_RDWR; /* no need for RW */ |
f7b4a940 AL |
2321 | break; |
2322 | case 'a': | |
2323 | if (action) { | |
ac1307ab | 2324 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2325 | return 0; |
f7b4a940 AL |
2326 | } |
2327 | action = SNAPSHOT_APPLY; | |
2328 | snapshot_name = optarg; | |
2329 | break; | |
2330 | case 'c': | |
2331 | if (action) { | |
ac1307ab | 2332 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2333 | return 0; |
f7b4a940 AL |
2334 | } |
2335 | action = SNAPSHOT_CREATE; | |
2336 | snapshot_name = optarg; | |
2337 | break; | |
2338 | case 'd': | |
2339 | if (action) { | |
ac1307ab | 2340 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2341 | return 0; |
f7b4a940 AL |
2342 | } |
2343 | action = SNAPSHOT_DELETE; | |
2344 | snapshot_name = optarg; | |
2345 | break; | |
f382d43a MR |
2346 | case 'q': |
2347 | quiet = true; | |
2348 | break; | |
f7b4a940 AL |
2349 | } |
2350 | } | |
2351 | ||
fc11eb26 | 2352 | if (optind != argc - 1) { |
ac1307ab | 2353 | error_exit("Expecting one image file name"); |
b8fb60da | 2354 | } |
f7b4a940 AL |
2355 | filename = argv[optind++]; |
2356 | ||
2357 | /* Open the image */ | |
7e7d56d9 MA |
2358 | blk = img_open("image", filename, NULL, bdrv_oflags, true, quiet); |
2359 | if (!blk) { | |
2360 | return 1; | |
c2abccec | 2361 | } |
7e7d56d9 | 2362 | bs = blk_bs(blk); |
f7b4a940 AL |
2363 | |
2364 | /* Perform the requested action */ | |
2365 | switch(action) { | |
2366 | case SNAPSHOT_LIST: | |
2367 | dump_snapshots(bs); | |
2368 | break; | |
2369 | ||
2370 | case SNAPSHOT_CREATE: | |
2371 | memset(&sn, 0, sizeof(sn)); | |
2372 | pstrcpy(sn.name, sizeof(sn.name), snapshot_name); | |
2373 | ||
2374 | qemu_gettimeofday(&tv); | |
2375 | sn.date_sec = tv.tv_sec; | |
2376 | sn.date_nsec = tv.tv_usec * 1000; | |
2377 | ||
2378 | ret = bdrv_snapshot_create(bs, &sn); | |
b8fb60da | 2379 | if (ret) { |
15654a6d | 2380 | error_report("Could not create snapshot '%s': %d (%s)", |
f7b4a940 | 2381 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 2382 | } |
f7b4a940 AL |
2383 | break; |
2384 | ||
2385 | case SNAPSHOT_APPLY: | |
2386 | ret = bdrv_snapshot_goto(bs, snapshot_name); | |
b8fb60da | 2387 | if (ret) { |
15654a6d | 2388 | error_report("Could not apply snapshot '%s': %d (%s)", |
f7b4a940 | 2389 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 2390 | } |
f7b4a940 AL |
2391 | break; |
2392 | ||
2393 | case SNAPSHOT_DELETE: | |
a89d89d3 | 2394 | bdrv_snapshot_delete_by_id_or_name(bs, snapshot_name, &err); |
84d18f06 | 2395 | if (err) { |
a89d89d3 WX |
2396 | error_report("Could not delete snapshot '%s': (%s)", |
2397 | snapshot_name, error_get_pretty(err)); | |
2398 | error_free(err); | |
2399 | ret = 1; | |
b8fb60da | 2400 | } |
f7b4a940 AL |
2401 | break; |
2402 | } | |
2403 | ||
2404 | /* Cleanup */ | |
26f54e9a | 2405 | blk_unref(blk); |
c2abccec MK |
2406 | if (ret) { |
2407 | return 1; | |
2408 | } | |
153859be | 2409 | return 0; |
f7b4a940 AL |
2410 | } |
2411 | ||
3e85c6fd KW |
2412 | static int img_rebase(int argc, char **argv) |
2413 | { | |
26f54e9a | 2414 | BlockBackend *blk = NULL, *blk_old_backing = NULL, *blk_new_backing = NULL; |
40ed35a3 | 2415 | BlockDriverState *bs = NULL, *bs_old_backing = NULL, *bs_new_backing = NULL; |
f163d073 | 2416 | BlockDriver *old_backing_drv, *new_backing_drv; |
3e85c6fd | 2417 | char *filename; |
40055951 HR |
2418 | const char *fmt, *cache, *src_cache, *out_basefmt, *out_baseimg; |
2419 | int c, flags, src_flags, ret; | |
3e85c6fd | 2420 | int unsafe = 0; |
6b837bc4 | 2421 | int progress = 0; |
f382d43a | 2422 | bool quiet = false; |
34b5d2c6 | 2423 | Error *local_err = NULL; |
3e85c6fd KW |
2424 | |
2425 | /* Parse commandline parameters */ | |
e53dbee0 | 2426 | fmt = NULL; |
661a0f71 | 2427 | cache = BDRV_DEFAULT_CACHE; |
40055951 | 2428 | src_cache = BDRV_DEFAULT_CACHE; |
3e85c6fd KW |
2429 | out_baseimg = NULL; |
2430 | out_basefmt = NULL; | |
3e85c6fd | 2431 | for(;;) { |
40055951 | 2432 | c = getopt(argc, argv, "hf:F:b:upt:T:q"); |
b8fb60da | 2433 | if (c == -1) { |
3e85c6fd | 2434 | break; |
b8fb60da | 2435 | } |
3e85c6fd | 2436 | switch(c) { |
ef87394c | 2437 | case '?': |
3e85c6fd KW |
2438 | case 'h': |
2439 | help(); | |
2440 | return 0; | |
e53dbee0 KW |
2441 | case 'f': |
2442 | fmt = optarg; | |
2443 | break; | |
3e85c6fd KW |
2444 | case 'F': |
2445 | out_basefmt = optarg; | |
2446 | break; | |
2447 | case 'b': | |
2448 | out_baseimg = optarg; | |
2449 | break; | |
2450 | case 'u': | |
2451 | unsafe = 1; | |
2452 | break; | |
6b837bc4 JS |
2453 | case 'p': |
2454 | progress = 1; | |
2455 | break; | |
661a0f71 FS |
2456 | case 't': |
2457 | cache = optarg; | |
2458 | break; | |
40055951 HR |
2459 | case 'T': |
2460 | src_cache = optarg; | |
2461 | break; | |
f382d43a MR |
2462 | case 'q': |
2463 | quiet = true; | |
2464 | break; | |
3e85c6fd KW |
2465 | } |
2466 | } | |
2467 | ||
f382d43a MR |
2468 | if (quiet) { |
2469 | progress = 0; | |
2470 | } | |
2471 | ||
ac1307ab FZ |
2472 | if (optind != argc - 1) { |
2473 | error_exit("Expecting one image file name"); | |
2474 | } | |
2475 | if (!unsafe && !out_baseimg) { | |
2476 | error_exit("Must specify backing file (-b) or use unsafe mode (-u)"); | |
b8fb60da | 2477 | } |
3e85c6fd KW |
2478 | filename = argv[optind++]; |
2479 | ||
6b837bc4 JS |
2480 | qemu_progress_init(progress, 2.0); |
2481 | qemu_progress_print(0, 100); | |
2482 | ||
661a0f71 | 2483 | flags = BDRV_O_RDWR | (unsafe ? BDRV_O_NO_BACKING : 0); |
c3993cdc | 2484 | ret = bdrv_parse_cache_flags(cache, &flags); |
661a0f71 FS |
2485 | if (ret < 0) { |
2486 | error_report("Invalid cache option: %s", cache); | |
40ed35a3 | 2487 | goto out; |
661a0f71 FS |
2488 | } |
2489 | ||
40055951 HR |
2490 | src_flags = BDRV_O_FLAGS; |
2491 | ret = bdrv_parse_cache_flags(src_cache, &src_flags); | |
2492 | if (ret < 0) { | |
2493 | error_report("Invalid source cache option: %s", src_cache); | |
40ed35a3 | 2494 | goto out; |
40055951 HR |
2495 | } |
2496 | ||
3e85c6fd KW |
2497 | /* |
2498 | * Open the images. | |
2499 | * | |
2500 | * Ignore the old backing file for unsafe rebase in case we want to correct | |
2501 | * the reference to a renamed or moved backing file. | |
2502 | */ | |
7e7d56d9 MA |
2503 | blk = img_open("image", filename, fmt, flags, true, quiet); |
2504 | if (!blk) { | |
40ed35a3 SH |
2505 | ret = -1; |
2506 | goto out; | |
c2abccec | 2507 | } |
7e7d56d9 | 2508 | bs = blk_bs(blk); |
3e85c6fd KW |
2509 | |
2510 | /* Find the right drivers for the backing files */ | |
2511 | old_backing_drv = NULL; | |
2512 | new_backing_drv = NULL; | |
2513 | ||
2514 | if (!unsafe && bs->backing_format[0] != '\0') { | |
2515 | old_backing_drv = bdrv_find_format(bs->backing_format); | |
2516 | if (old_backing_drv == NULL) { | |
15654a6d | 2517 | error_report("Invalid format name: '%s'", bs->backing_format); |
c2abccec MK |
2518 | ret = -1; |
2519 | goto out; | |
3e85c6fd KW |
2520 | } |
2521 | } | |
2522 | ||
2523 | if (out_basefmt != NULL) { | |
2524 | new_backing_drv = bdrv_find_format(out_basefmt); | |
2525 | if (new_backing_drv == NULL) { | |
15654a6d | 2526 | error_report("Invalid format name: '%s'", out_basefmt); |
c2abccec MK |
2527 | ret = -1; |
2528 | goto out; | |
3e85c6fd KW |
2529 | } |
2530 | } | |
2531 | ||
2532 | /* For safe rebasing we need to compare old and new backing file */ | |
40ed35a3 | 2533 | if (!unsafe) { |
3e85c6fd KW |
2534 | char backing_name[1024]; |
2535 | ||
7e7d56d9 MA |
2536 | blk_old_backing = blk_new_with_bs("old_backing", &error_abort); |
2537 | bs_old_backing = blk_bs(blk_old_backing); | |
3e85c6fd | 2538 | bdrv_get_backing_filename(bs, backing_name, sizeof(backing_name)); |
40055951 | 2539 | ret = bdrv_open(&bs_old_backing, backing_name, NULL, NULL, src_flags, |
34b5d2c6 | 2540 | old_backing_drv, &local_err); |
c2abccec | 2541 | if (ret) { |
34b5d2c6 HR |
2542 | error_report("Could not open old backing file '%s': %s", |
2543 | backing_name, error_get_pretty(local_err)); | |
2544 | error_free(local_err); | |
c2abccec | 2545 | goto out; |
3e85c6fd | 2546 | } |
a616673d | 2547 | if (out_baseimg[0]) { |
7e7d56d9 MA |
2548 | blk_new_backing = blk_new_with_bs("new_backing", &error_abort); |
2549 | bs_new_backing = blk_bs(blk_new_backing); | |
40055951 HR |
2550 | ret = bdrv_open(&bs_new_backing, out_baseimg, NULL, NULL, src_flags, |
2551 | new_backing_drv, &local_err); | |
a616673d | 2552 | if (ret) { |
34b5d2c6 HR |
2553 | error_report("Could not open new backing file '%s': %s", |
2554 | out_baseimg, error_get_pretty(local_err)); | |
2555 | error_free(local_err); | |
a616673d AB |
2556 | goto out; |
2557 | } | |
3e85c6fd KW |
2558 | } |
2559 | } | |
2560 | ||
2561 | /* | |
2562 | * Check each unallocated cluster in the COW file. If it is unallocated, | |
2563 | * accesses go to the backing file. We must therefore compare this cluster | |
2564 | * in the old and new backing file, and if they differ we need to copy it | |
2565 | * from the old backing file into the COW file. | |
2566 | * | |
2567 | * If qemu-img crashes during this step, no harm is done. The content of | |
2568 | * the image is the same as the original one at any time. | |
2569 | */ | |
2570 | if (!unsafe) { | |
52bf1e72 MA |
2571 | int64_t num_sectors; |
2572 | int64_t old_backing_num_sectors; | |
2573 | int64_t new_backing_num_sectors = 0; | |
3e85c6fd | 2574 | uint64_t sector; |
cc60e327 | 2575 | int n; |
d6771bfa T |
2576 | uint8_t * buf_old; |
2577 | uint8_t * buf_new; | |
1f710495 | 2578 | float local_progress = 0; |
d6771bfa | 2579 | |
bb1c0597 KW |
2580 | buf_old = qemu_blockalign(bs, IO_BUF_SIZE); |
2581 | buf_new = qemu_blockalign(bs, IO_BUF_SIZE); | |
3e85c6fd | 2582 | |
52bf1e72 MA |
2583 | num_sectors = bdrv_nb_sectors(bs); |
2584 | if (num_sectors < 0) { | |
2585 | error_report("Could not get size of '%s': %s", | |
2586 | filename, strerror(-num_sectors)); | |
2587 | ret = -1; | |
2588 | goto out; | |
2589 | } | |
2590 | old_backing_num_sectors = bdrv_nb_sectors(bs_old_backing); | |
2591 | if (old_backing_num_sectors < 0) { | |
2592 | char backing_name[1024]; | |
2593 | ||
2594 | bdrv_get_backing_filename(bs, backing_name, sizeof(backing_name)); | |
2595 | error_report("Could not get size of '%s': %s", | |
2596 | backing_name, strerror(-old_backing_num_sectors)); | |
2597 | ret = -1; | |
2598 | goto out; | |
2599 | } | |
a616673d | 2600 | if (bs_new_backing) { |
52bf1e72 MA |
2601 | new_backing_num_sectors = bdrv_nb_sectors(bs_new_backing); |
2602 | if (new_backing_num_sectors < 0) { | |
2603 | error_report("Could not get size of '%s': %s", | |
2604 | out_baseimg, strerror(-new_backing_num_sectors)); | |
2605 | ret = -1; | |
2606 | goto out; | |
2607 | } | |
a616673d | 2608 | } |
3e85c6fd | 2609 | |
1f710495 KW |
2610 | if (num_sectors != 0) { |
2611 | local_progress = (float)100 / | |
2612 | (num_sectors / MIN(num_sectors, IO_BUF_SIZE / 512)); | |
2613 | } | |
2614 | ||
3e85c6fd KW |
2615 | for (sector = 0; sector < num_sectors; sector += n) { |
2616 | ||
2617 | /* How many sectors can we handle with the next read? */ | |
2618 | if (sector + (IO_BUF_SIZE / 512) <= num_sectors) { | |
2619 | n = (IO_BUF_SIZE / 512); | |
2620 | } else { | |
2621 | n = num_sectors - sector; | |
2622 | } | |
2623 | ||
2624 | /* If the cluster is allocated, we don't need to take action */ | |
cc60e327 | 2625 | ret = bdrv_is_allocated(bs, sector, n, &n); |
d663640c PB |
2626 | if (ret < 0) { |
2627 | error_report("error while reading image metadata: %s", | |
2628 | strerror(-ret)); | |
2629 | goto out; | |
2630 | } | |
cc60e327 | 2631 | if (ret) { |
3e85c6fd KW |
2632 | continue; |
2633 | } | |
2634 | ||
87a1b3e3 KW |
2635 | /* |
2636 | * Read old and new backing file and take into consideration that | |
2637 | * backing files may be smaller than the COW image. | |
2638 | */ | |
2639 | if (sector >= old_backing_num_sectors) { | |
2640 | memset(buf_old, 0, n * BDRV_SECTOR_SIZE); | |
2641 | } else { | |
2642 | if (sector + n > old_backing_num_sectors) { | |
2643 | n = old_backing_num_sectors - sector; | |
2644 | } | |
2645 | ||
2646 | ret = bdrv_read(bs_old_backing, sector, buf_old, n); | |
2647 | if (ret < 0) { | |
2648 | error_report("error while reading from old backing file"); | |
2649 | goto out; | |
2650 | } | |
3e85c6fd | 2651 | } |
87a1b3e3 | 2652 | |
a616673d | 2653 | if (sector >= new_backing_num_sectors || !bs_new_backing) { |
87a1b3e3 KW |
2654 | memset(buf_new, 0, n * BDRV_SECTOR_SIZE); |
2655 | } else { | |
2656 | if (sector + n > new_backing_num_sectors) { | |
2657 | n = new_backing_num_sectors - sector; | |
2658 | } | |
2659 | ||
2660 | ret = bdrv_read(bs_new_backing, sector, buf_new, n); | |
2661 | if (ret < 0) { | |
2662 | error_report("error while reading from new backing file"); | |
2663 | goto out; | |
2664 | } | |
3e85c6fd KW |
2665 | } |
2666 | ||
2667 | /* If they differ, we need to write to the COW file */ | |
2668 | uint64_t written = 0; | |
2669 | ||
2670 | while (written < n) { | |
2671 | int pnum; | |
2672 | ||
2673 | if (compare_sectors(buf_old + written * 512, | |
60b1bd4f | 2674 | buf_new + written * 512, n - written, &pnum)) |
3e85c6fd KW |
2675 | { |
2676 | ret = bdrv_write(bs, sector + written, | |
2677 | buf_old + written * 512, pnum); | |
2678 | if (ret < 0) { | |
15654a6d | 2679 | error_report("Error while writing to COW image: %s", |
3e85c6fd | 2680 | strerror(-ret)); |
c2abccec | 2681 | goto out; |
3e85c6fd KW |
2682 | } |
2683 | } | |
2684 | ||
2685 | written += pnum; | |
2686 | } | |
6b837bc4 | 2687 | qemu_progress_print(local_progress, 100); |
3e85c6fd | 2688 | } |
d6771bfa | 2689 | |
bb1c0597 KW |
2690 | qemu_vfree(buf_old); |
2691 | qemu_vfree(buf_new); | |
3e85c6fd KW |
2692 | } |
2693 | ||
2694 | /* | |
2695 | * Change the backing file. All clusters that are different from the old | |
2696 | * backing file are overwritten in the COW file now, so the visible content | |
2697 | * doesn't change when we switch the backing file. | |
2698 | */ | |
a616673d AB |
2699 | if (out_baseimg && *out_baseimg) { |
2700 | ret = bdrv_change_backing_file(bs, out_baseimg, out_basefmt); | |
2701 | } else { | |
2702 | ret = bdrv_change_backing_file(bs, NULL, NULL); | |
2703 | } | |
2704 | ||
3e85c6fd | 2705 | if (ret == -ENOSPC) { |
15654a6d JS |
2706 | error_report("Could not change the backing file to '%s': No " |
2707 | "space left in the file header", out_baseimg); | |
3e85c6fd | 2708 | } else if (ret < 0) { |
15654a6d | 2709 | error_report("Could not change the backing file to '%s': %s", |
3e85c6fd KW |
2710 | out_baseimg, strerror(-ret)); |
2711 | } | |
2712 | ||
6b837bc4 | 2713 | qemu_progress_print(100, 0); |
3e85c6fd KW |
2714 | /* |
2715 | * TODO At this point it is possible to check if any clusters that are | |
2716 | * allocated in the COW file are the same in the backing file. If so, they | |
2717 | * could be dropped from the COW file. Don't do this before switching the | |
2718 | * backing file, in case of a crash this would lead to corruption. | |
2719 | */ | |
c2abccec | 2720 | out: |
6b837bc4 | 2721 | qemu_progress_end(); |
3e85c6fd KW |
2722 | /* Cleanup */ |
2723 | if (!unsafe) { | |
26f54e9a | 2724 | blk_unref(blk_old_backing); |
26f54e9a | 2725 | blk_unref(blk_new_backing); |
3e85c6fd KW |
2726 | } |
2727 | ||
26f54e9a | 2728 | blk_unref(blk); |
c2abccec MK |
2729 | if (ret) { |
2730 | return 1; | |
2731 | } | |
3e85c6fd KW |
2732 | return 0; |
2733 | } | |
2734 | ||
ae6b0ed6 SH |
2735 | static int img_resize(int argc, char **argv) |
2736 | { | |
2737 | int c, ret, relative; | |
2738 | const char *filename, *fmt, *size; | |
2739 | int64_t n, total_size; | |
f382d43a | 2740 | bool quiet = false; |
26f54e9a | 2741 | BlockBackend *blk = NULL; |
2a81998a | 2742 | BlockDriverState *bs = NULL; |
20caf0f7 DXW |
2743 | QemuOpts *param; |
2744 | static QemuOptsList resize_options = { | |
2745 | .name = "resize_options", | |
2746 | .head = QTAILQ_HEAD_INITIALIZER(resize_options.head), | |
2747 | .desc = { | |
2748 | { | |
2749 | .name = BLOCK_OPT_SIZE, | |
2750 | .type = QEMU_OPT_SIZE, | |
2751 | .help = "Virtual disk size" | |
2752 | }, { | |
2753 | /* end of list */ | |
2754 | } | |
ae6b0ed6 | 2755 | }, |
ae6b0ed6 SH |
2756 | }; |
2757 | ||
e80fec7f KW |
2758 | /* Remove size from argv manually so that negative numbers are not treated |
2759 | * as options by getopt. */ | |
2760 | if (argc < 3) { | |
ac1307ab | 2761 | error_exit("Not enough arguments"); |
e80fec7f KW |
2762 | return 1; |
2763 | } | |
2764 | ||
2765 | size = argv[--argc]; | |
2766 | ||
2767 | /* Parse getopt arguments */ | |
ae6b0ed6 SH |
2768 | fmt = NULL; |
2769 | for(;;) { | |
f382d43a | 2770 | c = getopt(argc, argv, "f:hq"); |
ae6b0ed6 SH |
2771 | if (c == -1) { |
2772 | break; | |
2773 | } | |
2774 | switch(c) { | |
ef87394c | 2775 | case '?': |
ae6b0ed6 SH |
2776 | case 'h': |
2777 | help(); | |
2778 | break; | |
2779 | case 'f': | |
2780 | fmt = optarg; | |
2781 | break; | |
f382d43a MR |
2782 | case 'q': |
2783 | quiet = true; | |
2784 | break; | |
ae6b0ed6 SH |
2785 | } |
2786 | } | |
fc11eb26 | 2787 | if (optind != argc - 1) { |
ac1307ab | 2788 | error_exit("Expecting one image file name"); |
ae6b0ed6 SH |
2789 | } |
2790 | filename = argv[optind++]; | |
ae6b0ed6 SH |
2791 | |
2792 | /* Choose grow, shrink, or absolute resize mode */ | |
2793 | switch (size[0]) { | |
2794 | case '+': | |
2795 | relative = 1; | |
2796 | size++; | |
2797 | break; | |
2798 | case '-': | |
2799 | relative = -1; | |
2800 | size++; | |
2801 | break; | |
2802 | default: | |
2803 | relative = 0; | |
2804 | break; | |
2805 | } | |
2806 | ||
2807 | /* Parse size */ | |
87ea75d5 | 2808 | param = qemu_opts_create(&resize_options, NULL, 0, &error_abort); |
20caf0f7 | 2809 | if (qemu_opt_set(param, BLOCK_OPT_SIZE, size)) { |
ae6b0ed6 | 2810 | /* Error message already printed when size parsing fails */ |
2a81998a | 2811 | ret = -1; |
20caf0f7 | 2812 | qemu_opts_del(param); |
2a81998a | 2813 | goto out; |
ae6b0ed6 | 2814 | } |
20caf0f7 DXW |
2815 | n = qemu_opt_get_size(param, BLOCK_OPT_SIZE, 0); |
2816 | qemu_opts_del(param); | |
ae6b0ed6 | 2817 | |
7e7d56d9 MA |
2818 | blk = img_open("image", filename, fmt, BDRV_O_FLAGS | BDRV_O_RDWR, |
2819 | true, quiet); | |
2820 | if (!blk) { | |
2a81998a JS |
2821 | ret = -1; |
2822 | goto out; | |
c2abccec | 2823 | } |
7e7d56d9 | 2824 | bs = blk_bs(blk); |
ae6b0ed6 SH |
2825 | |
2826 | if (relative) { | |
2827 | total_size = bdrv_getlength(bs) + n * relative; | |
2828 | } else { | |
2829 | total_size = n; | |
2830 | } | |
2831 | if (total_size <= 0) { | |
15654a6d | 2832 | error_report("New image size must be positive"); |
c2abccec MK |
2833 | ret = -1; |
2834 | goto out; | |
ae6b0ed6 SH |
2835 | } |
2836 | ||
2837 | ret = bdrv_truncate(bs, total_size); | |
2838 | switch (ret) { | |
2839 | case 0: | |
f382d43a | 2840 | qprintf(quiet, "Image resized.\n"); |
ae6b0ed6 SH |
2841 | break; |
2842 | case -ENOTSUP: | |
259b2173 | 2843 | error_report("This image does not support resize"); |
ae6b0ed6 SH |
2844 | break; |
2845 | case -EACCES: | |
15654a6d | 2846 | error_report("Image is read-only"); |
ae6b0ed6 SH |
2847 | break; |
2848 | default: | |
15654a6d | 2849 | error_report("Error resizing image (%d)", -ret); |
ae6b0ed6 SH |
2850 | break; |
2851 | } | |
c2abccec | 2852 | out: |
26f54e9a | 2853 | blk_unref(blk); |
c2abccec MK |
2854 | if (ret) { |
2855 | return 1; | |
2856 | } | |
ae6b0ed6 SH |
2857 | return 0; |
2858 | } | |
2859 | ||
6f176b48 HR |
2860 | static int img_amend(int argc, char **argv) |
2861 | { | |
2862 | int c, ret = 0; | |
2863 | char *options = NULL; | |
83d0521a CL |
2864 | QemuOptsList *create_opts = NULL; |
2865 | QemuOpts *opts = NULL; | |
bd39e6ed HR |
2866 | const char *fmt = NULL, *filename, *cache; |
2867 | int flags; | |
6f176b48 | 2868 | bool quiet = false; |
26f54e9a | 2869 | BlockBackend *blk = NULL; |
6f176b48 HR |
2870 | BlockDriverState *bs = NULL; |
2871 | ||
bd39e6ed | 2872 | cache = BDRV_DEFAULT_CACHE; |
6f176b48 | 2873 | for (;;) { |
bd39e6ed | 2874 | c = getopt(argc, argv, "ho:f:t:q"); |
6f176b48 HR |
2875 | if (c == -1) { |
2876 | break; | |
2877 | } | |
2878 | ||
2879 | switch (c) { | |
2880 | case 'h': | |
2881 | case '?': | |
2882 | help(); | |
2883 | break; | |
2884 | case 'o': | |
626f84f3 KW |
2885 | if (!is_valid_option_list(optarg)) { |
2886 | error_report("Invalid option list: %s", optarg); | |
2887 | ret = -1; | |
2888 | goto out; | |
2889 | } | |
2890 | if (!options) { | |
2891 | options = g_strdup(optarg); | |
2892 | } else { | |
2893 | char *old_options = options; | |
2894 | options = g_strdup_printf("%s,%s", options, optarg); | |
2895 | g_free(old_options); | |
2896 | } | |
6f176b48 HR |
2897 | break; |
2898 | case 'f': | |
2899 | fmt = optarg; | |
2900 | break; | |
bd39e6ed HR |
2901 | case 't': |
2902 | cache = optarg; | |
2903 | break; | |
6f176b48 HR |
2904 | case 'q': |
2905 | quiet = true; | |
2906 | break; | |
2907 | } | |
2908 | } | |
2909 | ||
a283cb6e | 2910 | if (!options) { |
ac1307ab | 2911 | error_exit("Must specify options (-o)"); |
6f176b48 HR |
2912 | } |
2913 | ||
a283cb6e KW |
2914 | filename = (optind == argc - 1) ? argv[argc - 1] : NULL; |
2915 | if (fmt && has_help_option(options)) { | |
2916 | /* If a format is explicitly specified (and possibly no filename is | |
2917 | * given), print option help here */ | |
2918 | ret = print_block_option_help(filename, fmt); | |
2919 | goto out; | |
6f176b48 HR |
2920 | } |
2921 | ||
a283cb6e | 2922 | if (optind != argc - 1) { |
ac1307ab | 2923 | error_exit("Expecting one image file name"); |
a283cb6e | 2924 | } |
6f176b48 | 2925 | |
bd39e6ed HR |
2926 | flags = BDRV_O_FLAGS | BDRV_O_RDWR; |
2927 | ret = bdrv_parse_cache_flags(cache, &flags); | |
2928 | if (ret < 0) { | |
2929 | error_report("Invalid cache option: %s", cache); | |
2930 | goto out; | |
2931 | } | |
2932 | ||
7e7d56d9 MA |
2933 | blk = img_open("image", filename, fmt, flags, true, quiet); |
2934 | if (!blk) { | |
6f176b48 HR |
2935 | error_report("Could not open image '%s'", filename); |
2936 | ret = -1; | |
2937 | goto out; | |
2938 | } | |
7e7d56d9 | 2939 | bs = blk_bs(blk); |
6f176b48 HR |
2940 | |
2941 | fmt = bs->drv->format_name; | |
2942 | ||
626f84f3 | 2943 | if (has_help_option(options)) { |
a283cb6e | 2944 | /* If the format was auto-detected, print option help here */ |
6f176b48 HR |
2945 | ret = print_block_option_help(filename, fmt); |
2946 | goto out; | |
2947 | } | |
2948 | ||
c282e1fd | 2949 | create_opts = qemu_opts_append(create_opts, bs->drv->create_opts); |
83d0521a CL |
2950 | opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); |
2951 | if (options && qemu_opts_do_parse(opts, options, NULL)) { | |
6f176b48 HR |
2952 | error_report("Invalid options for file format '%s'", fmt); |
2953 | ret = -1; | |
2954 | goto out; | |
2955 | } | |
2956 | ||
c282e1fd | 2957 | ret = bdrv_amend_options(bs, opts); |
6f176b48 HR |
2958 | if (ret < 0) { |
2959 | error_report("Error while amending options: %s", strerror(-ret)); | |
2960 | goto out; | |
2961 | } | |
2962 | ||
2963 | out: | |
26f54e9a | 2964 | blk_unref(blk); |
83d0521a CL |
2965 | qemu_opts_del(opts); |
2966 | qemu_opts_free(create_opts); | |
626f84f3 KW |
2967 | g_free(options); |
2968 | ||
6f176b48 HR |
2969 | if (ret) { |
2970 | return 1; | |
2971 | } | |
2972 | return 0; | |
2973 | } | |
2974 | ||
c227f099 | 2975 | static const img_cmd_t img_cmds[] = { |
153859be SB |
2976 | #define DEF(option, callback, arg_string) \ |
2977 | { option, callback }, | |
2978 | #include "qemu-img-cmds.h" | |
2979 | #undef DEF | |
2980 | #undef GEN_DOCS | |
2981 | { NULL, NULL, }, | |
2982 | }; | |
2983 | ||
ea2384d3 FB |
2984 | int main(int argc, char **argv) |
2985 | { | |
c227f099 | 2986 | const img_cmd_t *cmd; |
153859be | 2987 | const char *cmdname; |
2f78e491 | 2988 | Error *local_error = NULL; |
7db1689c | 2989 | int c; |
7db1689c JC |
2990 | static const struct option long_options[] = { |
2991 | {"help", no_argument, 0, 'h'}, | |
5f6979cb | 2992 | {"version", no_argument, 0, 'v'}, |
7db1689c JC |
2993 | {0, 0, 0, 0} |
2994 | }; | |
ea2384d3 | 2995 | |
526eda14 MK |
2996 | #ifdef CONFIG_POSIX |
2997 | signal(SIGPIPE, SIG_IGN); | |
2998 | #endif | |
2999 | ||
53f76e58 | 3000 | error_set_progname(argv[0]); |
10f5bff6 | 3001 | qemu_init_exec_dir(argv[0]); |
53f76e58 | 3002 | |
2f78e491 CN |
3003 | if (qemu_init_main_loop(&local_error)) { |
3004 | error_report("%s", error_get_pretty(local_error)); | |
3005 | error_free(local_error); | |
3006 | exit(EXIT_FAILURE); | |
3007 | } | |
3008 | ||
ea2384d3 | 3009 | bdrv_init(); |
ac1307ab FZ |
3010 | if (argc < 2) { |
3011 | error_exit("Not enough arguments"); | |
3012 | } | |
153859be | 3013 | cmdname = argv[1]; |
153859be SB |
3014 | |
3015 | /* find the command */ | |
5f6979cb | 3016 | for (cmd = img_cmds; cmd->name != NULL; cmd++) { |
153859be | 3017 | if (!strcmp(cmdname, cmd->name)) { |
7db1689c | 3018 | return cmd->handler(argc - 1, argv + 1); |
153859be | 3019 | } |
ea2384d3 | 3020 | } |
153859be | 3021 | |
5f6979cb | 3022 | c = getopt_long(argc, argv, "h", long_options, NULL); |
7db1689c JC |
3023 | |
3024 | if (c == 'h') { | |
3025 | help(); | |
3026 | } | |
5f6979cb JC |
3027 | if (c == 'v') { |
3028 | printf(QEMU_IMG_VERSION); | |
3029 | return 0; | |
3030 | } | |
7db1689c | 3031 | |
153859be | 3032 | /* not found */ |
ac1307ab | 3033 | error_exit("Command not found: %s", cmdname); |
ea2384d3 | 3034 | } |