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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 | |
61979a6a | 38 | #define QEMU_IMG_VERSION "qemu-img version " QEMU_VERSION QEMU_PKGVERSION \ |
5f6979cb JC |
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 | 168 | |
4ac8aacd JS |
169 | static int print_block_option_help(const char *filename, const char *fmt) |
170 | { | |
171 | BlockDriver *drv, *proto_drv; | |
83d0521a | 172 | QemuOptsList *create_opts = NULL; |
b65a5e12 | 173 | Error *local_err = NULL; |
4ac8aacd JS |
174 | |
175 | /* Find driver and parse its options */ | |
176 | drv = bdrv_find_format(fmt); | |
177 | if (!drv) { | |
15654a6d | 178 | error_report("Unknown file format '%s'", fmt); |
4ac8aacd JS |
179 | return 1; |
180 | } | |
181 | ||
c282e1fd | 182 | create_opts = qemu_opts_append(create_opts, drv->create_opts); |
a283cb6e | 183 | if (filename) { |
b65a5e12 | 184 | proto_drv = bdrv_find_protocol(filename, true, &local_err); |
a283cb6e | 185 | if (!proto_drv) { |
2867ce4a | 186 | error_report_err(local_err); |
83d0521a | 187 | qemu_opts_free(create_opts); |
a283cb6e KW |
188 | return 1; |
189 | } | |
c282e1fd | 190 | create_opts = qemu_opts_append(create_opts, proto_drv->create_opts); |
a283cb6e KW |
191 | } |
192 | ||
83d0521a CL |
193 | qemu_opts_print_help(create_opts); |
194 | qemu_opts_free(create_opts); | |
4ac8aacd JS |
195 | return 0; |
196 | } | |
197 | ||
7e7d56d9 MA |
198 | static BlockBackend *img_open(const char *id, const char *filename, |
199 | const char *fmt, int flags, | |
200 | bool require_io, bool quiet) | |
75c23805 | 201 | { |
7e7d56d9 | 202 | BlockBackend *blk; |
75c23805 | 203 | BlockDriverState *bs; |
75c23805 | 204 | char password[256]; |
34b5d2c6 | 205 | Error *local_err = NULL; |
5bd31326 | 206 | QDict *options = NULL; |
ad717139 | 207 | |
75c23805 | 208 | if (fmt) { |
5bd31326 HR |
209 | options = qdict_new(); |
210 | qdict_put(options, "driver", qstring_from_str(fmt)); | |
75c23805 | 211 | } |
b9eaf9ec | 212 | |
5bd31326 HR |
213 | blk = blk_new_open(id, filename, NULL, options, flags, &local_err); |
214 | if (!blk) { | |
34b5d2c6 HR |
215 | error_report("Could not open '%s': %s", filename, |
216 | error_get_pretty(local_err)); | |
217 | error_free(local_err); | |
c2abccec | 218 | goto fail; |
75c23805 | 219 | } |
b9eaf9ec | 220 | |
5bd31326 | 221 | bs = blk_bs(blk); |
f0536bb8 | 222 | if (bdrv_is_encrypted(bs) && require_io) { |
f382d43a | 223 | qprintf(quiet, "Disk image '%s' is encrypted.\n", filename); |
d57e4e48 | 224 | if (qemu_read_password(password, sizeof(password)) < 0) { |
15654a6d | 225 | error_report("No password given"); |
c2abccec MK |
226 | goto fail; |
227 | } | |
228 | if (bdrv_set_key(bs, password) < 0) { | |
15654a6d | 229 | error_report("invalid password"); |
c2abccec MK |
230 | goto fail; |
231 | } | |
75c23805 | 232 | } |
7e7d56d9 | 233 | return blk; |
c2abccec | 234 | fail: |
7e7d56d9 | 235 | blk_unref(blk); |
c2abccec | 236 | return NULL; |
75c23805 FB |
237 | } |
238 | ||
83d0521a | 239 | static int add_old_style_options(const char *fmt, QemuOpts *opts, |
eec77d9e JS |
240 | const char *base_filename, |
241 | const char *base_fmt) | |
efa84d43 | 242 | { |
6750e795 MA |
243 | Error *err = NULL; |
244 | ||
efa84d43 | 245 | if (base_filename) { |
f43e47db | 246 | qemu_opt_set(opts, BLOCK_OPT_BACKING_FILE, base_filename, &err); |
6750e795 | 247 | if (err) { |
15654a6d JS |
248 | error_report("Backing file not supported for file format '%s'", |
249 | fmt); | |
6750e795 | 250 | error_free(err); |
c2abccec | 251 | return -1; |
efa84d43 KW |
252 | } |
253 | } | |
254 | if (base_fmt) { | |
f43e47db | 255 | qemu_opt_set(opts, BLOCK_OPT_BACKING_FMT, base_fmt, &err); |
6750e795 | 256 | if (err) { |
15654a6d JS |
257 | error_report("Backing file format not supported for file " |
258 | "format '%s'", fmt); | |
6750e795 | 259 | error_free(err); |
c2abccec | 260 | return -1; |
efa84d43 KW |
261 | } |
262 | } | |
c2abccec | 263 | return 0; |
efa84d43 KW |
264 | } |
265 | ||
ea2384d3 FB |
266 | static int img_create(int argc, char **argv) |
267 | { | |
a9300911 | 268 | int c; |
1da7cfbd | 269 | uint64_t img_size = -1; |
ea2384d3 | 270 | const char *fmt = "raw"; |
9230eaf6 | 271 | const char *base_fmt = NULL; |
ea2384d3 FB |
272 | const char *filename; |
273 | const char *base_filename = NULL; | |
9ea2ea71 | 274 | char *options = NULL; |
9b37525a | 275 | Error *local_err = NULL; |
f382d43a | 276 | bool quiet = false; |
3b46e624 | 277 | |
ea2384d3 | 278 | for(;;) { |
f382d43a | 279 | c = getopt(argc, argv, "F:b:f:he6o:q"); |
b8fb60da | 280 | if (c == -1) { |
ea2384d3 | 281 | break; |
b8fb60da | 282 | } |
ea2384d3 | 283 | switch(c) { |
ef87394c | 284 | case '?': |
ea2384d3 FB |
285 | case 'h': |
286 | help(); | |
287 | break; | |
9230eaf6 AL |
288 | case 'F': |
289 | base_fmt = optarg; | |
290 | break; | |
ea2384d3 FB |
291 | case 'b': |
292 | base_filename = optarg; | |
293 | break; | |
294 | case 'f': | |
295 | fmt = optarg; | |
296 | break; | |
297 | case 'e': | |
9d42e15d | 298 | error_report("option -e is deprecated, please use \'-o " |
eec77d9e | 299 | "encryption\' instead!"); |
77386bf6 | 300 | goto fail; |
d8871c5a | 301 | case '6': |
9d42e15d | 302 | error_report("option -6 is deprecated, please use \'-o " |
eec77d9e | 303 | "compat6\' instead!"); |
77386bf6 | 304 | goto fail; |
9ea2ea71 | 305 | case 'o': |
77386bf6 KW |
306 | if (!is_valid_option_list(optarg)) { |
307 | error_report("Invalid option list: %s", optarg); | |
308 | goto fail; | |
309 | } | |
310 | if (!options) { | |
311 | options = g_strdup(optarg); | |
312 | } else { | |
313 | char *old_options = options; | |
314 | options = g_strdup_printf("%s,%s", options, optarg); | |
315 | g_free(old_options); | |
316 | } | |
9ea2ea71 | 317 | break; |
f382d43a MR |
318 | case 'q': |
319 | quiet = true; | |
320 | break; | |
ea2384d3 FB |
321 | } |
322 | } | |
9230eaf6 | 323 | |
b50cbabc | 324 | /* Get the filename */ |
a283cb6e KW |
325 | filename = (optind < argc) ? argv[optind] : NULL; |
326 | if (options && has_help_option(options)) { | |
327 | g_free(options); | |
328 | return print_block_option_help(filename, fmt); | |
329 | } | |
330 | ||
b8fb60da | 331 | if (optind >= argc) { |
ac1307ab | 332 | error_exit("Expecting image file name"); |
b8fb60da | 333 | } |
a283cb6e | 334 | optind++; |
b50cbabc | 335 | |
1da7cfbd JS |
336 | /* Get image size, if specified */ |
337 | if (optind < argc) { | |
70b4f4bb | 338 | int64_t sval; |
e36b3695 MA |
339 | char *end; |
340 | sval = strtosz_suffix(argv[optind++], &end, STRTOSZ_DEFSUFFIX_B); | |
341 | if (sval < 0 || *end) { | |
79443397 LG |
342 | if (sval == -ERANGE) { |
343 | error_report("Image size must be less than 8 EiB!"); | |
344 | } else { | |
345 | error_report("Invalid image size specified! You may use k, M, " | |
5e00984a KW |
346 | "G, T, P or E suffixes for "); |
347 | error_report("kilobytes, megabytes, gigabytes, terabytes, " | |
348 | "petabytes and exabytes."); | |
79443397 | 349 | } |
77386bf6 | 350 | goto fail; |
1da7cfbd JS |
351 | } |
352 | img_size = (uint64_t)sval; | |
353 | } | |
fc11eb26 | 354 | if (optind != argc) { |
ac1307ab | 355 | error_exit("Unexpected argument: %s", argv[optind]); |
fc11eb26 | 356 | } |
1da7cfbd | 357 | |
9b37525a | 358 | bdrv_img_create(filename, fmt, base_filename, base_fmt, |
f382d43a | 359 | options, img_size, BDRV_O_FLAGS, &local_err, quiet); |
84d18f06 | 360 | if (local_err) { |
b70d8c23 | 361 | error_report("%s: %s", filename, error_get_pretty(local_err)); |
9b37525a | 362 | error_free(local_err); |
77386bf6 | 363 | goto fail; |
c2abccec | 364 | } |
a9300911 | 365 | |
77386bf6 | 366 | g_free(options); |
ea2384d3 | 367 | return 0; |
77386bf6 KW |
368 | |
369 | fail: | |
370 | g_free(options); | |
371 | return 1; | |
ea2384d3 FB |
372 | } |
373 | ||
f382d43a | 374 | static void dump_json_image_check(ImageCheck *check, bool quiet) |
8599ea4c | 375 | { |
4399c438 | 376 | Error *local_err = NULL; |
8599ea4c FS |
377 | QString *str; |
378 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
379 | QObject *obj; | |
380 | visit_type_ImageCheck(qmp_output_get_visitor(ov), | |
4399c438 | 381 | &check, NULL, &local_err); |
8599ea4c FS |
382 | obj = qmp_output_get_qobject(ov); |
383 | str = qobject_to_json_pretty(obj); | |
384 | assert(str != NULL); | |
f382d43a | 385 | qprintf(quiet, "%s\n", qstring_get_str(str)); |
8599ea4c FS |
386 | qobject_decref(obj); |
387 | qmp_output_visitor_cleanup(ov); | |
388 | QDECREF(str); | |
389 | } | |
390 | ||
f382d43a | 391 | static void dump_human_image_check(ImageCheck *check, bool quiet) |
8599ea4c FS |
392 | { |
393 | if (!(check->corruptions || check->leaks || check->check_errors)) { | |
f382d43a | 394 | qprintf(quiet, "No errors were found on the image.\n"); |
8599ea4c FS |
395 | } else { |
396 | if (check->corruptions) { | |
f382d43a MR |
397 | qprintf(quiet, "\n%" PRId64 " errors were found on the image.\n" |
398 | "Data may be corrupted, or further writes to the image " | |
399 | "may corrupt it.\n", | |
400 | check->corruptions); | |
8599ea4c FS |
401 | } |
402 | ||
403 | if (check->leaks) { | |
f382d43a MR |
404 | qprintf(quiet, |
405 | "\n%" PRId64 " leaked clusters were found on the image.\n" | |
406 | "This means waste of disk space, but no harm to data.\n", | |
407 | check->leaks); | |
8599ea4c FS |
408 | } |
409 | ||
410 | if (check->check_errors) { | |
f382d43a MR |
411 | qprintf(quiet, |
412 | "\n%" PRId64 | |
413 | " internal errors have occurred during the check.\n", | |
414 | check->check_errors); | |
8599ea4c FS |
415 | } |
416 | } | |
417 | ||
418 | if (check->total_clusters != 0 && check->allocated_clusters != 0) { | |
f382d43a MR |
419 | qprintf(quiet, "%" PRId64 "/%" PRId64 " = %0.2f%% allocated, " |
420 | "%0.2f%% fragmented, %0.2f%% compressed clusters\n", | |
421 | check->allocated_clusters, check->total_clusters, | |
422 | check->allocated_clusters * 100.0 / check->total_clusters, | |
423 | check->fragmented_clusters * 100.0 / check->allocated_clusters, | |
424 | check->compressed_clusters * 100.0 / | |
425 | check->allocated_clusters); | |
8599ea4c FS |
426 | } |
427 | ||
428 | if (check->image_end_offset) { | |
f382d43a MR |
429 | qprintf(quiet, |
430 | "Image end offset: %" PRId64 "\n", check->image_end_offset); | |
8599ea4c FS |
431 | } |
432 | } | |
433 | ||
434 | static int collect_image_check(BlockDriverState *bs, | |
435 | ImageCheck *check, | |
436 | const char *filename, | |
437 | const char *fmt, | |
438 | int fix) | |
439 | { | |
440 | int ret; | |
441 | BdrvCheckResult result; | |
442 | ||
443 | ret = bdrv_check(bs, &result, fix); | |
444 | if (ret < 0) { | |
445 | return ret; | |
446 | } | |
447 | ||
448 | check->filename = g_strdup(filename); | |
449 | check->format = g_strdup(bdrv_get_format_name(bs)); | |
450 | check->check_errors = result.check_errors; | |
451 | check->corruptions = result.corruptions; | |
452 | check->has_corruptions = result.corruptions != 0; | |
453 | check->leaks = result.leaks; | |
454 | check->has_leaks = result.leaks != 0; | |
455 | check->corruptions_fixed = result.corruptions_fixed; | |
456 | check->has_corruptions_fixed = result.corruptions != 0; | |
457 | check->leaks_fixed = result.leaks_fixed; | |
458 | check->has_leaks_fixed = result.leaks != 0; | |
459 | check->image_end_offset = result.image_end_offset; | |
460 | check->has_image_end_offset = result.image_end_offset != 0; | |
461 | check->total_clusters = result.bfi.total_clusters; | |
462 | check->has_total_clusters = result.bfi.total_clusters != 0; | |
463 | check->allocated_clusters = result.bfi.allocated_clusters; | |
464 | check->has_allocated_clusters = result.bfi.allocated_clusters != 0; | |
465 | check->fragmented_clusters = result.bfi.fragmented_clusters; | |
466 | check->has_fragmented_clusters = result.bfi.fragmented_clusters != 0; | |
e6439d78 SH |
467 | check->compressed_clusters = result.bfi.compressed_clusters; |
468 | check->has_compressed_clusters = result.bfi.compressed_clusters != 0; | |
8599ea4c FS |
469 | |
470 | return 0; | |
471 | } | |
472 | ||
e076f338 KW |
473 | /* |
474 | * Checks an image for consistency. Exit codes: | |
475 | * | |
d6635c4d HR |
476 | * 0 - Check completed, image is good |
477 | * 1 - Check not completed because of internal errors | |
478 | * 2 - Check completed, image is corrupted | |
479 | * 3 - Check completed, image has leaked clusters, but is good otherwise | |
480 | * 63 - Checks are not supported by the image format | |
e076f338 | 481 | */ |
1585969c AL |
482 | static int img_check(int argc, char **argv) |
483 | { | |
484 | int c, ret; | |
8599ea4c | 485 | OutputFormat output_format = OFORMAT_HUMAN; |
40055951 | 486 | const char *filename, *fmt, *output, *cache; |
26f54e9a | 487 | BlockBackend *blk; |
1585969c | 488 | BlockDriverState *bs; |
4534ff54 | 489 | int fix = 0; |
058f8f16 | 490 | int flags = BDRV_O_FLAGS | BDRV_O_CHECK; |
7e7d56d9 | 491 | ImageCheck *check; |
f382d43a | 492 | bool quiet = false; |
1585969c AL |
493 | |
494 | fmt = NULL; | |
8599ea4c | 495 | output = NULL; |
40055951 | 496 | cache = BDRV_DEFAULT_CACHE; |
1585969c | 497 | for(;;) { |
8599ea4c FS |
498 | int option_index = 0; |
499 | static const struct option long_options[] = { | |
500 | {"help", no_argument, 0, 'h'}, | |
501 | {"format", required_argument, 0, 'f'}, | |
4fd6a984 | 502 | {"repair", required_argument, 0, 'r'}, |
8599ea4c FS |
503 | {"output", required_argument, 0, OPTION_OUTPUT}, |
504 | {0, 0, 0, 0} | |
505 | }; | |
40055951 | 506 | c = getopt_long(argc, argv, "hf:r:T:q", |
8599ea4c | 507 | long_options, &option_index); |
b8fb60da | 508 | if (c == -1) { |
1585969c | 509 | break; |
b8fb60da | 510 | } |
1585969c | 511 | switch(c) { |
ef87394c | 512 | case '?': |
1585969c AL |
513 | case 'h': |
514 | help(); | |
515 | break; | |
516 | case 'f': | |
517 | fmt = optarg; | |
518 | break; | |
4534ff54 KW |
519 | case 'r': |
520 | flags |= BDRV_O_RDWR; | |
521 | ||
522 | if (!strcmp(optarg, "leaks")) { | |
523 | fix = BDRV_FIX_LEAKS; | |
524 | } else if (!strcmp(optarg, "all")) { | |
525 | fix = BDRV_FIX_LEAKS | BDRV_FIX_ERRORS; | |
526 | } else { | |
ac1307ab FZ |
527 | error_exit("Unknown option value for -r " |
528 | "(expecting 'leaks' or 'all'): %s", optarg); | |
4534ff54 KW |
529 | } |
530 | break; | |
8599ea4c FS |
531 | case OPTION_OUTPUT: |
532 | output = optarg; | |
533 | break; | |
40055951 HR |
534 | case 'T': |
535 | cache = optarg; | |
536 | break; | |
f382d43a MR |
537 | case 'q': |
538 | quiet = true; | |
539 | break; | |
1585969c AL |
540 | } |
541 | } | |
fc11eb26 | 542 | if (optind != argc - 1) { |
ac1307ab | 543 | error_exit("Expecting one image file name"); |
b8fb60da | 544 | } |
1585969c AL |
545 | filename = argv[optind++]; |
546 | ||
8599ea4c FS |
547 | if (output && !strcmp(output, "json")) { |
548 | output_format = OFORMAT_JSON; | |
549 | } else if (output && !strcmp(output, "human")) { | |
550 | output_format = OFORMAT_HUMAN; | |
551 | } else if (output) { | |
552 | error_report("--output must be used with human or json as argument."); | |
553 | return 1; | |
554 | } | |
555 | ||
40055951 HR |
556 | ret = bdrv_parse_cache_flags(cache, &flags); |
557 | if (ret < 0) { | |
558 | error_report("Invalid source cache option: %s", cache); | |
559 | return 1; | |
560 | } | |
561 | ||
7e7d56d9 MA |
562 | blk = img_open("image", filename, fmt, flags, true, quiet); |
563 | if (!blk) { | |
564 | return 1; | |
c2abccec | 565 | } |
7e7d56d9 | 566 | bs = blk_bs(blk); |
8599ea4c FS |
567 | |
568 | check = g_new0(ImageCheck, 1); | |
569 | ret = collect_image_check(bs, check, filename, fmt, fix); | |
e076f338 KW |
570 | |
571 | if (ret == -ENOTSUP) { | |
55d492d7 | 572 | error_report("This image format does not support checks"); |
fefddf95 | 573 | ret = 63; |
8599ea4c | 574 | goto fail; |
e076f338 KW |
575 | } |
576 | ||
8599ea4c FS |
577 | if (check->corruptions_fixed || check->leaks_fixed) { |
578 | int corruptions_fixed, leaks_fixed; | |
ccf34716 | 579 | |
8599ea4c FS |
580 | leaks_fixed = check->leaks_fixed; |
581 | corruptions_fixed = check->corruptions_fixed; | |
e076f338 | 582 | |
8599ea4c | 583 | if (output_format == OFORMAT_HUMAN) { |
f382d43a MR |
584 | qprintf(quiet, |
585 | "The following inconsistencies were found and repaired:\n\n" | |
586 | " %" PRId64 " leaked clusters\n" | |
587 | " %" PRId64 " corruptions\n\n" | |
588 | "Double checking the fixed image now...\n", | |
589 | check->leaks_fixed, | |
590 | check->corruptions_fixed); | |
e076f338 KW |
591 | } |
592 | ||
8599ea4c | 593 | ret = collect_image_check(bs, check, filename, fmt, 0); |
1585969c | 594 | |
8599ea4c FS |
595 | check->leaks_fixed = leaks_fixed; |
596 | check->corruptions_fixed = corruptions_fixed; | |
f8111c24 DXW |
597 | } |
598 | ||
832390a5 HR |
599 | if (!ret) { |
600 | switch (output_format) { | |
601 | case OFORMAT_HUMAN: | |
602 | dump_human_image_check(check, quiet); | |
603 | break; | |
604 | case OFORMAT_JSON: | |
605 | dump_json_image_check(check, quiet); | |
606 | break; | |
607 | } | |
c6bb9ad1 FS |
608 | } |
609 | ||
8599ea4c | 610 | if (ret || check->check_errors) { |
832390a5 HR |
611 | if (ret) { |
612 | error_report("Check failed: %s", strerror(-ret)); | |
613 | } else { | |
614 | error_report("Check failed"); | |
615 | } | |
8599ea4c FS |
616 | ret = 1; |
617 | goto fail; | |
c2abccec | 618 | } |
e076f338 | 619 | |
8599ea4c FS |
620 | if (check->corruptions) { |
621 | ret = 2; | |
622 | } else if (check->leaks) { | |
623 | ret = 3; | |
e076f338 | 624 | } else { |
8599ea4c | 625 | ret = 0; |
e076f338 | 626 | } |
8599ea4c FS |
627 | |
628 | fail: | |
629 | qapi_free_ImageCheck(check); | |
26f54e9a | 630 | blk_unref(blk); |
8599ea4c | 631 | return ret; |
1585969c AL |
632 | } |
633 | ||
d4a3238a HR |
634 | typedef struct CommonBlockJobCBInfo { |
635 | BlockDriverState *bs; | |
636 | Error **errp; | |
637 | } CommonBlockJobCBInfo; | |
638 | ||
639 | static void common_block_job_cb(void *opaque, int ret) | |
640 | { | |
641 | CommonBlockJobCBInfo *cbi = opaque; | |
642 | ||
643 | if (ret < 0) { | |
644 | error_setg_errno(cbi->errp, -ret, "Block job failed"); | |
645 | } | |
646 | ||
647 | /* Drop this block job's reference */ | |
648 | bdrv_unref(cbi->bs); | |
649 | } | |
650 | ||
651 | static void run_block_job(BlockJob *job, Error **errp) | |
652 | { | |
653 | AioContext *aio_context = bdrv_get_aio_context(job->bs); | |
654 | ||
655 | do { | |
656 | aio_poll(aio_context, true); | |
687fa1d8 | 657 | qemu_progress_print((float)job->offset / job->len * 100.f, 0); |
d4a3238a HR |
658 | } while (!job->ready); |
659 | ||
660 | block_job_complete_sync(job, errp); | |
687fa1d8 HR |
661 | |
662 | /* A block job may finish instantaneously without publishing any progress, | |
663 | * so just signal completion here */ | |
664 | qemu_progress_print(100.f, 0); | |
d4a3238a HR |
665 | } |
666 | ||
ea2384d3 FB |
667 | static int img_commit(int argc, char **argv) |
668 | { | |
661a0f71 | 669 | int c, ret, flags; |
1b22bffd | 670 | const char *filename, *fmt, *cache, *base; |
26f54e9a | 671 | BlockBackend *blk; |
d4a3238a | 672 | BlockDriverState *bs, *base_bs; |
687fa1d8 | 673 | bool progress = false, quiet = false, drop = false; |
d4a3238a HR |
674 | Error *local_err = NULL; |
675 | CommonBlockJobCBInfo cbi; | |
ea2384d3 FB |
676 | |
677 | fmt = NULL; | |
661a0f71 | 678 | cache = BDRV_DEFAULT_CACHE; |
1b22bffd | 679 | base = NULL; |
ea2384d3 | 680 | for(;;) { |
1b22bffd | 681 | c = getopt(argc, argv, "f:ht:b:dpq"); |
b8fb60da | 682 | if (c == -1) { |
ea2384d3 | 683 | break; |
b8fb60da | 684 | } |
ea2384d3 | 685 | switch(c) { |
ef87394c | 686 | case '?': |
ea2384d3 FB |
687 | case 'h': |
688 | help(); | |
689 | break; | |
690 | case 'f': | |
691 | fmt = optarg; | |
692 | break; | |
661a0f71 FS |
693 | case 't': |
694 | cache = optarg; | |
695 | break; | |
1b22bffd HR |
696 | case 'b': |
697 | base = optarg; | |
698 | /* -b implies -d */ | |
699 | drop = true; | |
700 | break; | |
9a86fe48 HR |
701 | case 'd': |
702 | drop = true; | |
703 | break; | |
687fa1d8 HR |
704 | case 'p': |
705 | progress = true; | |
706 | break; | |
f382d43a MR |
707 | case 'q': |
708 | quiet = true; | |
709 | break; | |
ea2384d3 FB |
710 | } |
711 | } | |
687fa1d8 HR |
712 | |
713 | /* Progress is not shown in Quiet mode */ | |
714 | if (quiet) { | |
715 | progress = false; | |
716 | } | |
717 | ||
fc11eb26 | 718 | if (optind != argc - 1) { |
ac1307ab | 719 | error_exit("Expecting one image file name"); |
b8fb60da | 720 | } |
ea2384d3 FB |
721 | filename = argv[optind++]; |
722 | ||
9a86fe48 | 723 | flags = BDRV_O_RDWR | BDRV_O_UNMAP; |
c3993cdc | 724 | ret = bdrv_parse_cache_flags(cache, &flags); |
661a0f71 FS |
725 | if (ret < 0) { |
726 | error_report("Invalid cache option: %s", cache); | |
a3981eb9 | 727 | return 1; |
661a0f71 FS |
728 | } |
729 | ||
7e7d56d9 MA |
730 | blk = img_open("image", filename, fmt, flags, true, quiet); |
731 | if (!blk) { | |
732 | return 1; | |
c2abccec | 733 | } |
7e7d56d9 MA |
734 | bs = blk_bs(blk); |
735 | ||
687fa1d8 HR |
736 | qemu_progress_init(progress, 1.f); |
737 | qemu_progress_print(0.f, 100); | |
738 | ||
1b22bffd HR |
739 | if (base) { |
740 | base_bs = bdrv_find_backing_image(bs, base); | |
741 | if (!base_bs) { | |
742 | error_set(&local_err, QERR_BASE_NOT_FOUND, base); | |
743 | goto done; | |
744 | } | |
745 | } else { | |
746 | /* This is different from QMP, which by default uses the deepest file in | |
747 | * the backing chain (i.e., the very base); however, the traditional | |
748 | * behavior of qemu-img commit is using the immediate backing file. */ | |
749 | base_bs = bs->backing_hd; | |
750 | if (!base_bs) { | |
751 | error_setg(&local_err, "Image does not have a backing file"); | |
752 | goto done; | |
753 | } | |
d4a3238a HR |
754 | } |
755 | ||
756 | cbi = (CommonBlockJobCBInfo){ | |
757 | .errp = &local_err, | |
758 | .bs = bs, | |
759 | }; | |
760 | ||
761 | commit_active_start(bs, base_bs, 0, BLOCKDEV_ON_ERROR_REPORT, | |
762 | common_block_job_cb, &cbi, &local_err); | |
763 | if (local_err) { | |
764 | goto done; | |
ea2384d3 FB |
765 | } |
766 | ||
9a86fe48 HR |
767 | /* The block job will swap base_bs and bs (which is not what we really want |
768 | * here, but okay) and unref base_bs (after the swap, i.e., the old top | |
769 | * image). In order to still be able to empty that top image afterwards, | |
770 | * increment the reference counter here preemptively. */ | |
771 | if (!drop) { | |
772 | bdrv_ref(base_bs); | |
773 | } | |
774 | ||
d4a3238a | 775 | run_block_job(bs->job, &local_err); |
9a86fe48 HR |
776 | if (local_err) { |
777 | goto unref_backing; | |
778 | } | |
779 | ||
780 | if (!drop && base_bs->drv->bdrv_make_empty) { | |
781 | ret = base_bs->drv->bdrv_make_empty(base_bs); | |
782 | if (ret) { | |
783 | error_setg_errno(&local_err, -ret, "Could not empty %s", | |
784 | filename); | |
785 | goto unref_backing; | |
786 | } | |
787 | } | |
788 | ||
789 | unref_backing: | |
790 | if (!drop) { | |
791 | bdrv_unref(base_bs); | |
792 | } | |
d4a3238a HR |
793 | |
794 | done: | |
687fa1d8 HR |
795 | qemu_progress_end(); |
796 | ||
26f54e9a | 797 | blk_unref(blk); |
d4a3238a HR |
798 | |
799 | if (local_err) { | |
6936f299 | 800 | error_report_err(local_err); |
c2abccec MK |
801 | return 1; |
802 | } | |
d4a3238a HR |
803 | |
804 | qprintf(quiet, "Image committed.\n"); | |
ea2384d3 FB |
805 | return 0; |
806 | } | |
807 | ||
f58c7b35 TS |
808 | /* |
809 | * Returns true iff the first sector pointed to by 'buf' contains at least | |
810 | * a non-NUL byte. | |
811 | * | |
812 | * 'pnum' is set to the number of sectors (including and immediately following | |
813 | * the first one) that are known to be in the same allocated/unallocated state. | |
814 | */ | |
ea2384d3 FB |
815 | static int is_allocated_sectors(const uint8_t *buf, int n, int *pnum) |
816 | { | |
1a6d39fd SH |
817 | bool is_zero; |
818 | int i; | |
ea2384d3 FB |
819 | |
820 | if (n <= 0) { | |
821 | *pnum = 0; | |
822 | return 0; | |
823 | } | |
1a6d39fd | 824 | is_zero = buffer_is_zero(buf, 512); |
ea2384d3 FB |
825 | for(i = 1; i < n; i++) { |
826 | buf += 512; | |
1a6d39fd | 827 | if (is_zero != buffer_is_zero(buf, 512)) { |
ea2384d3 | 828 | break; |
1a6d39fd | 829 | } |
ea2384d3 FB |
830 | } |
831 | *pnum = i; | |
1a6d39fd | 832 | return !is_zero; |
ea2384d3 FB |
833 | } |
834 | ||
a22f123c KW |
835 | /* |
836 | * Like is_allocated_sectors, but if the buffer starts with a used sector, | |
837 | * up to 'min' consecutive sectors containing zeros are ignored. This avoids | |
838 | * breaking up write requests for only small sparse areas. | |
839 | */ | |
840 | static int is_allocated_sectors_min(const uint8_t *buf, int n, int *pnum, | |
841 | int min) | |
842 | { | |
843 | int ret; | |
844 | int num_checked, num_used; | |
845 | ||
846 | if (n < min) { | |
847 | min = n; | |
848 | } | |
849 | ||
850 | ret = is_allocated_sectors(buf, n, pnum); | |
851 | if (!ret) { | |
852 | return ret; | |
853 | } | |
854 | ||
855 | num_used = *pnum; | |
856 | buf += BDRV_SECTOR_SIZE * *pnum; | |
857 | n -= *pnum; | |
858 | num_checked = num_used; | |
859 | ||
860 | while (n > 0) { | |
861 | ret = is_allocated_sectors(buf, n, pnum); | |
862 | ||
863 | buf += BDRV_SECTOR_SIZE * *pnum; | |
864 | n -= *pnum; | |
865 | num_checked += *pnum; | |
866 | if (ret) { | |
867 | num_used = num_checked; | |
868 | } else if (*pnum >= min) { | |
869 | break; | |
870 | } | |
871 | } | |
872 | ||
873 | *pnum = num_used; | |
874 | return 1; | |
875 | } | |
876 | ||
3e85c6fd KW |
877 | /* |
878 | * Compares two buffers sector by sector. Returns 0 if the first sector of both | |
879 | * buffers matches, non-zero otherwise. | |
880 | * | |
881 | * pnum is set to the number of sectors (including and immediately following | |
882 | * the first one) that are known to have the same comparison result | |
883 | */ | |
884 | static int compare_sectors(const uint8_t *buf1, const uint8_t *buf2, int n, | |
885 | int *pnum) | |
886 | { | |
8c1ac475 RK |
887 | bool res; |
888 | int i; | |
3e85c6fd KW |
889 | |
890 | if (n <= 0) { | |
891 | *pnum = 0; | |
892 | return 0; | |
893 | } | |
894 | ||
895 | res = !!memcmp(buf1, buf2, 512); | |
896 | for(i = 1; i < n; i++) { | |
897 | buf1 += 512; | |
898 | buf2 += 512; | |
899 | ||
900 | if (!!memcmp(buf1, buf2, 512) != res) { | |
901 | break; | |
902 | } | |
903 | } | |
904 | ||
905 | *pnum = i; | |
906 | return res; | |
907 | } | |
908 | ||
80ee15a6 | 909 | #define IO_BUF_SIZE (2 * 1024 * 1024) |
ea2384d3 | 910 | |
d14ed18c MR |
911 | static int64_t sectors_to_bytes(int64_t sectors) |
912 | { | |
913 | return sectors << BDRV_SECTOR_BITS; | |
914 | } | |
915 | ||
916 | static int64_t sectors_to_process(int64_t total, int64_t from) | |
917 | { | |
918 | return MIN(total - from, IO_BUF_SIZE >> BDRV_SECTOR_BITS); | |
919 | } | |
920 | ||
921 | /* | |
922 | * Check if passed sectors are empty (not allocated or contain only 0 bytes) | |
923 | * | |
924 | * Returns 0 in case sectors are filled with 0, 1 if sectors contain non-zero | |
925 | * data and negative value on error. | |
926 | * | |
f1d3cd79 | 927 | * @param blk: BlockBackend for the image |
d14ed18c MR |
928 | * @param sect_num: Number of first sector to check |
929 | * @param sect_count: Number of sectors to check | |
930 | * @param filename: Name of disk file we are checking (logging purpose) | |
931 | * @param buffer: Allocated buffer for storing read data | |
932 | * @param quiet: Flag for quiet mode | |
933 | */ | |
f1d3cd79 | 934 | static int check_empty_sectors(BlockBackend *blk, int64_t sect_num, |
d14ed18c MR |
935 | int sect_count, const char *filename, |
936 | uint8_t *buffer, bool quiet) | |
937 | { | |
938 | int pnum, ret = 0; | |
f1d3cd79 | 939 | ret = blk_read(blk, sect_num, buffer, sect_count); |
d14ed18c MR |
940 | if (ret < 0) { |
941 | error_report("Error while reading offset %" PRId64 " of %s: %s", | |
942 | sectors_to_bytes(sect_num), filename, strerror(-ret)); | |
943 | return ret; | |
944 | } | |
945 | ret = is_allocated_sectors(buffer, sect_count, &pnum); | |
946 | if (ret || pnum != sect_count) { | |
947 | qprintf(quiet, "Content mismatch at offset %" PRId64 "!\n", | |
948 | sectors_to_bytes(ret ? sect_num : sect_num + pnum)); | |
949 | return 1; | |
950 | } | |
951 | ||
952 | return 0; | |
953 | } | |
954 | ||
955 | /* | |
956 | * Compares two images. Exit codes: | |
957 | * | |
958 | * 0 - Images are identical | |
959 | * 1 - Images differ | |
960 | * >1 - Error occurred | |
961 | */ | |
962 | static int img_compare(int argc, char **argv) | |
963 | { | |
40055951 | 964 | const char *fmt1 = NULL, *fmt2 = NULL, *cache, *filename1, *filename2; |
26f54e9a | 965 | BlockBackend *blk1, *blk2; |
d14ed18c MR |
966 | BlockDriverState *bs1, *bs2; |
967 | int64_t total_sectors1, total_sectors2; | |
968 | uint8_t *buf1 = NULL, *buf2 = NULL; | |
969 | int pnum1, pnum2; | |
970 | int allocated1, allocated2; | |
971 | int ret = 0; /* return value - 0 Ident, 1 Different, >1 Error */ | |
972 | bool progress = false, quiet = false, strict = false; | |
40055951 | 973 | int flags; |
d14ed18c MR |
974 | int64_t total_sectors; |
975 | int64_t sector_num = 0; | |
976 | int64_t nb_sectors; | |
977 | int c, pnum; | |
d14ed18c MR |
978 | uint64_t progress_base; |
979 | ||
40055951 | 980 | cache = BDRV_DEFAULT_CACHE; |
d14ed18c | 981 | for (;;) { |
40055951 | 982 | c = getopt(argc, argv, "hf:F:T:pqs"); |
d14ed18c MR |
983 | if (c == -1) { |
984 | break; | |
985 | } | |
986 | switch (c) { | |
987 | case '?': | |
988 | case 'h': | |
989 | help(); | |
990 | break; | |
991 | case 'f': | |
992 | fmt1 = optarg; | |
993 | break; | |
994 | case 'F': | |
995 | fmt2 = optarg; | |
996 | break; | |
40055951 HR |
997 | case 'T': |
998 | cache = optarg; | |
999 | break; | |
d14ed18c MR |
1000 | case 'p': |
1001 | progress = true; | |
1002 | break; | |
1003 | case 'q': | |
1004 | quiet = true; | |
1005 | break; | |
1006 | case 's': | |
1007 | strict = true; | |
1008 | break; | |
1009 | } | |
1010 | } | |
1011 | ||
1012 | /* Progress is not shown in Quiet mode */ | |
1013 | if (quiet) { | |
1014 | progress = false; | |
1015 | } | |
1016 | ||
1017 | ||
fc11eb26 | 1018 | if (optind != argc - 2) { |
ac1307ab | 1019 | error_exit("Expecting two image file names"); |
d14ed18c MR |
1020 | } |
1021 | filename1 = argv[optind++]; | |
1022 | filename2 = argv[optind++]; | |
1023 | ||
cbda016d SH |
1024 | /* Initialize before goto out */ |
1025 | qemu_progress_init(progress, 2.0); | |
1026 | ||
40055951 HR |
1027 | flags = BDRV_O_FLAGS; |
1028 | ret = bdrv_parse_cache_flags(cache, &flags); | |
1029 | if (ret < 0) { | |
1030 | error_report("Invalid source cache option: %s", cache); | |
1031 | ret = 2; | |
1032 | goto out3; | |
1033 | } | |
1034 | ||
7e7d56d9 MA |
1035 | blk1 = img_open("image_1", filename1, fmt1, flags, true, quiet); |
1036 | if (!blk1) { | |
d14ed18c | 1037 | ret = 2; |
7e7d56d9 | 1038 | goto out3; |
d14ed18c | 1039 | } |
7e7d56d9 | 1040 | bs1 = blk_bs(blk1); |
d14ed18c | 1041 | |
7e7d56d9 MA |
1042 | blk2 = img_open("image_2", filename2, fmt2, flags, true, quiet); |
1043 | if (!blk2) { | |
d14ed18c | 1044 | ret = 2; |
7e7d56d9 | 1045 | goto out2; |
d14ed18c | 1046 | } |
7e7d56d9 | 1047 | bs2 = blk_bs(blk2); |
d14ed18c | 1048 | |
f1d3cd79 HR |
1049 | buf1 = blk_blockalign(blk1, IO_BUF_SIZE); |
1050 | buf2 = blk_blockalign(blk2, IO_BUF_SIZE); | |
1051 | total_sectors1 = blk_nb_sectors(blk1); | |
52bf1e72 MA |
1052 | if (total_sectors1 < 0) { |
1053 | error_report("Can't get size of %s: %s", | |
1054 | filename1, strerror(-total_sectors1)); | |
1055 | ret = 4; | |
1056 | goto out; | |
1057 | } | |
f1d3cd79 | 1058 | total_sectors2 = blk_nb_sectors(blk2); |
52bf1e72 MA |
1059 | if (total_sectors2 < 0) { |
1060 | error_report("Can't get size of %s: %s", | |
1061 | filename2, strerror(-total_sectors2)); | |
1062 | ret = 4; | |
1063 | goto out; | |
1064 | } | |
d14ed18c MR |
1065 | total_sectors = MIN(total_sectors1, total_sectors2); |
1066 | progress_base = MAX(total_sectors1, total_sectors2); | |
1067 | ||
1068 | qemu_progress_print(0, 100); | |
1069 | ||
1070 | if (strict && total_sectors1 != total_sectors2) { | |
1071 | ret = 1; | |
1072 | qprintf(quiet, "Strict mode: Image size mismatch!\n"); | |
1073 | goto out; | |
1074 | } | |
1075 | ||
1076 | for (;;) { | |
1077 | nb_sectors = sectors_to_process(total_sectors, sector_num); | |
1078 | if (nb_sectors <= 0) { | |
1079 | break; | |
1080 | } | |
1081 | allocated1 = bdrv_is_allocated_above(bs1, NULL, sector_num, nb_sectors, | |
1082 | &pnum1); | |
1083 | if (allocated1 < 0) { | |
1084 | ret = 3; | |
1085 | error_report("Sector allocation test failed for %s", filename1); | |
1086 | goto out; | |
1087 | } | |
1088 | ||
1089 | allocated2 = bdrv_is_allocated_above(bs2, NULL, sector_num, nb_sectors, | |
1090 | &pnum2); | |
1091 | if (allocated2 < 0) { | |
1092 | ret = 3; | |
1093 | error_report("Sector allocation test failed for %s", filename2); | |
1094 | goto out; | |
1095 | } | |
1096 | nb_sectors = MIN(pnum1, pnum2); | |
1097 | ||
1098 | if (allocated1 == allocated2) { | |
1099 | if (allocated1) { | |
f1d3cd79 | 1100 | ret = blk_read(blk1, sector_num, buf1, nb_sectors); |
d14ed18c MR |
1101 | if (ret < 0) { |
1102 | error_report("Error while reading offset %" PRId64 " of %s:" | |
1103 | " %s", sectors_to_bytes(sector_num), filename1, | |
1104 | strerror(-ret)); | |
1105 | ret = 4; | |
1106 | goto out; | |
1107 | } | |
f1d3cd79 | 1108 | ret = blk_read(blk2, sector_num, buf2, nb_sectors); |
d14ed18c MR |
1109 | if (ret < 0) { |
1110 | error_report("Error while reading offset %" PRId64 | |
1111 | " of %s: %s", sectors_to_bytes(sector_num), | |
1112 | filename2, strerror(-ret)); | |
1113 | ret = 4; | |
1114 | goto out; | |
1115 | } | |
1116 | ret = compare_sectors(buf1, buf2, nb_sectors, &pnum); | |
1117 | if (ret || pnum != nb_sectors) { | |
d14ed18c MR |
1118 | qprintf(quiet, "Content mismatch at offset %" PRId64 "!\n", |
1119 | sectors_to_bytes( | |
1120 | ret ? sector_num : sector_num + pnum)); | |
36452f12 | 1121 | ret = 1; |
d14ed18c MR |
1122 | goto out; |
1123 | } | |
1124 | } | |
1125 | } else { | |
1126 | if (strict) { | |
1127 | ret = 1; | |
1128 | qprintf(quiet, "Strict mode: Offset %" PRId64 | |
1129 | " allocation mismatch!\n", | |
1130 | sectors_to_bytes(sector_num)); | |
1131 | goto out; | |
1132 | } | |
1133 | ||
1134 | if (allocated1) { | |
f1d3cd79 | 1135 | ret = check_empty_sectors(blk1, sector_num, nb_sectors, |
d14ed18c MR |
1136 | filename1, buf1, quiet); |
1137 | } else { | |
f1d3cd79 | 1138 | ret = check_empty_sectors(blk2, sector_num, nb_sectors, |
d14ed18c MR |
1139 | filename2, buf1, quiet); |
1140 | } | |
1141 | if (ret) { | |
1142 | if (ret < 0) { | |
d14ed18c MR |
1143 | error_report("Error while reading offset %" PRId64 ": %s", |
1144 | sectors_to_bytes(sector_num), strerror(-ret)); | |
36452f12 | 1145 | ret = 4; |
d14ed18c MR |
1146 | } |
1147 | goto out; | |
1148 | } | |
1149 | } | |
1150 | sector_num += nb_sectors; | |
1151 | qemu_progress_print(((float) nb_sectors / progress_base)*100, 100); | |
1152 | } | |
1153 | ||
1154 | if (total_sectors1 != total_sectors2) { | |
f1d3cd79 | 1155 | BlockBackend *blk_over; |
d14ed18c MR |
1156 | int64_t total_sectors_over; |
1157 | const char *filename_over; | |
1158 | ||
1159 | qprintf(quiet, "Warning: Image size mismatch!\n"); | |
1160 | if (total_sectors1 > total_sectors2) { | |
1161 | total_sectors_over = total_sectors1; | |
f1d3cd79 | 1162 | blk_over = blk1; |
d14ed18c MR |
1163 | filename_over = filename1; |
1164 | } else { | |
1165 | total_sectors_over = total_sectors2; | |
f1d3cd79 | 1166 | blk_over = blk2; |
d14ed18c MR |
1167 | filename_over = filename2; |
1168 | } | |
1169 | ||
1170 | for (;;) { | |
1171 | nb_sectors = sectors_to_process(total_sectors_over, sector_num); | |
1172 | if (nb_sectors <= 0) { | |
1173 | break; | |
1174 | } | |
f1d3cd79 | 1175 | ret = bdrv_is_allocated_above(blk_bs(blk_over), NULL, sector_num, |
d14ed18c MR |
1176 | nb_sectors, &pnum); |
1177 | if (ret < 0) { | |
1178 | ret = 3; | |
1179 | error_report("Sector allocation test failed for %s", | |
1180 | filename_over); | |
1181 | goto out; | |
1182 | ||
1183 | } | |
1184 | nb_sectors = pnum; | |
1185 | if (ret) { | |
f1d3cd79 | 1186 | ret = check_empty_sectors(blk_over, sector_num, nb_sectors, |
d14ed18c MR |
1187 | filename_over, buf1, quiet); |
1188 | if (ret) { | |
1189 | if (ret < 0) { | |
d14ed18c MR |
1190 | error_report("Error while reading offset %" PRId64 |
1191 | " of %s: %s", sectors_to_bytes(sector_num), | |
1192 | filename_over, strerror(-ret)); | |
36452f12 | 1193 | ret = 4; |
d14ed18c MR |
1194 | } |
1195 | goto out; | |
1196 | } | |
1197 | } | |
1198 | sector_num += nb_sectors; | |
1199 | qemu_progress_print(((float) nb_sectors / progress_base)*100, 100); | |
1200 | } | |
1201 | } | |
1202 | ||
1203 | qprintf(quiet, "Images are identical.\n"); | |
1204 | ret = 0; | |
1205 | ||
1206 | out: | |
d14ed18c MR |
1207 | qemu_vfree(buf1); |
1208 | qemu_vfree(buf2); | |
26f54e9a | 1209 | blk_unref(blk2); |
d14ed18c | 1210 | out2: |
26f54e9a | 1211 | blk_unref(blk1); |
d14ed18c MR |
1212 | out3: |
1213 | qemu_progress_end(); | |
1214 | return ret; | |
1215 | } | |
1216 | ||
690c7301 KW |
1217 | enum ImgConvertBlockStatus { |
1218 | BLK_DATA, | |
1219 | BLK_ZERO, | |
1220 | BLK_BACKING_FILE, | |
1221 | }; | |
1222 | ||
1223 | typedef struct ImgConvertState { | |
1224 | BlockBackend **src; | |
1225 | int64_t *src_sectors; | |
1226 | int src_cur, src_num; | |
1227 | int64_t src_cur_offset; | |
1228 | int64_t total_sectors; | |
1229 | int64_t allocated_sectors; | |
1230 | enum ImgConvertBlockStatus status; | |
1231 | int64_t sector_next_status; | |
1232 | BlockBackend *target; | |
1233 | bool has_zero_init; | |
1234 | bool compressed; | |
1235 | bool target_has_backing; | |
1236 | int min_sparse; | |
1237 | size_t cluster_sectors; | |
1238 | size_t buf_sectors; | |
1239 | } ImgConvertState; | |
1240 | ||
1241 | static void convert_select_part(ImgConvertState *s, int64_t sector_num) | |
1242 | { | |
1243 | assert(sector_num >= s->src_cur_offset); | |
1244 | while (sector_num - s->src_cur_offset >= s->src_sectors[s->src_cur]) { | |
1245 | s->src_cur_offset += s->src_sectors[s->src_cur]; | |
1246 | s->src_cur++; | |
1247 | assert(s->src_cur < s->src_num); | |
1248 | } | |
1249 | } | |
1250 | ||
1251 | static int convert_iteration_sectors(ImgConvertState *s, int64_t sector_num) | |
1252 | { | |
1253 | int64_t ret; | |
1254 | int n; | |
1255 | ||
1256 | convert_select_part(s, sector_num); | |
1257 | ||
1258 | assert(s->total_sectors > sector_num); | |
1259 | n = MIN(s->total_sectors - sector_num, BDRV_REQUEST_MAX_SECTORS); | |
1260 | ||
1261 | if (s->sector_next_status <= sector_num) { | |
1262 | ret = bdrv_get_block_status(blk_bs(s->src[s->src_cur]), | |
1263 | sector_num - s->src_cur_offset, | |
1264 | n, &n); | |
1265 | if (ret < 0) { | |
1266 | return ret; | |
1267 | } | |
1268 | ||
1269 | if (ret & BDRV_BLOCK_ZERO) { | |
1270 | s->status = BLK_ZERO; | |
1271 | } else if (ret & BDRV_BLOCK_DATA) { | |
1272 | s->status = BLK_DATA; | |
1273 | } else if (!s->target_has_backing) { | |
1274 | /* Without a target backing file we must copy over the contents of | |
1275 | * the backing file as well. */ | |
1276 | /* TODO Check block status of the backing file chain to avoid | |
1277 | * needlessly reading zeroes and limiting the iteration to the | |
1278 | * buffer size */ | |
1279 | s->status = BLK_DATA; | |
1280 | } else { | |
1281 | s->status = BLK_BACKING_FILE; | |
1282 | } | |
1283 | ||
1284 | s->sector_next_status = sector_num + n; | |
1285 | } | |
1286 | ||
1287 | n = MIN(n, s->sector_next_status - sector_num); | |
1288 | if (s->status == BLK_DATA) { | |
1289 | n = MIN(n, s->buf_sectors); | |
1290 | } | |
1291 | ||
1292 | /* We need to write complete clusters for compressed images, so if an | |
1293 | * unallocated area is shorter than that, we must consider the whole | |
1294 | * cluster allocated. */ | |
1295 | if (s->compressed) { | |
1296 | if (n < s->cluster_sectors) { | |
1297 | n = MIN(s->cluster_sectors, s->total_sectors - sector_num); | |
1298 | s->status = BLK_DATA; | |
1299 | } else { | |
1300 | n = QEMU_ALIGN_DOWN(n, s->cluster_sectors); | |
1301 | } | |
1302 | } | |
1303 | ||
1304 | return n; | |
1305 | } | |
1306 | ||
1307 | static int convert_read(ImgConvertState *s, int64_t sector_num, int nb_sectors, | |
1308 | uint8_t *buf) | |
1309 | { | |
1310 | int n; | |
1311 | int ret; | |
1312 | ||
1313 | if (s->status == BLK_ZERO || s->status == BLK_BACKING_FILE) { | |
1314 | return 0; | |
1315 | } | |
1316 | ||
1317 | assert(nb_sectors <= s->buf_sectors); | |
1318 | while (nb_sectors > 0) { | |
1319 | BlockBackend *blk; | |
1320 | int64_t bs_sectors; | |
1321 | ||
1322 | /* In the case of compression with multiple source files, we can get a | |
1323 | * nb_sectors that spreads into the next part. So we must be able to | |
1324 | * read across multiple BDSes for one convert_read() call. */ | |
1325 | convert_select_part(s, sector_num); | |
1326 | blk = s->src[s->src_cur]; | |
1327 | bs_sectors = s->src_sectors[s->src_cur]; | |
1328 | ||
1329 | n = MIN(nb_sectors, bs_sectors - (sector_num - s->src_cur_offset)); | |
1330 | ret = blk_read(blk, sector_num - s->src_cur_offset, buf, n); | |
1331 | if (ret < 0) { | |
1332 | return ret; | |
1333 | } | |
1334 | ||
1335 | sector_num += n; | |
1336 | nb_sectors -= n; | |
1337 | buf += n * BDRV_SECTOR_SIZE; | |
1338 | } | |
1339 | ||
1340 | return 0; | |
1341 | } | |
1342 | ||
1343 | static int convert_write(ImgConvertState *s, int64_t sector_num, int nb_sectors, | |
1344 | const uint8_t *buf) | |
1345 | { | |
1346 | int ret; | |
1347 | ||
1348 | while (nb_sectors > 0) { | |
1349 | int n = nb_sectors; | |
1350 | ||
1351 | switch (s->status) { | |
1352 | case BLK_BACKING_FILE: | |
1353 | /* If we have a backing file, leave clusters unallocated that are | |
1354 | * unallocated in the source image, so that the backing file is | |
1355 | * visible at the respective offset. */ | |
1356 | assert(s->target_has_backing); | |
1357 | break; | |
1358 | ||
1359 | case BLK_DATA: | |
1360 | /* We must always write compressed clusters as a whole, so don't | |
1361 | * try to find zeroed parts in the buffer. We can only save the | |
1362 | * write if the buffer is completely zeroed and we're allowed to | |
1363 | * keep the target sparse. */ | |
1364 | if (s->compressed) { | |
1365 | if (s->has_zero_init && s->min_sparse && | |
1366 | buffer_is_zero(buf, n * BDRV_SECTOR_SIZE)) | |
1367 | { | |
1368 | assert(!s->target_has_backing); | |
1369 | break; | |
1370 | } | |
1371 | ||
1372 | ret = blk_write_compressed(s->target, sector_num, buf, n); | |
1373 | if (ret < 0) { | |
1374 | return ret; | |
1375 | } | |
1376 | break; | |
1377 | } | |
1378 | ||
1379 | /* If there is real non-zero data or we're told to keep the target | |
1380 | * fully allocated (-S 0), we must write it. Otherwise we can treat | |
1381 | * it as zero sectors. */ | |
1382 | if (!s->min_sparse || | |
1383 | is_allocated_sectors_min(buf, n, &n, s->min_sparse)) | |
1384 | { | |
1385 | ret = blk_write(s->target, sector_num, buf, n); | |
1386 | if (ret < 0) { | |
1387 | return ret; | |
1388 | } | |
1389 | break; | |
1390 | } | |
1391 | /* fall-through */ | |
1392 | ||
1393 | case BLK_ZERO: | |
1394 | if (s->has_zero_init) { | |
1395 | break; | |
1396 | } | |
1397 | ret = blk_write_zeroes(s->target, sector_num, n, 0); | |
1398 | if (ret < 0) { | |
1399 | return ret; | |
1400 | } | |
1401 | break; | |
1402 | } | |
1403 | ||
1404 | sector_num += n; | |
1405 | nb_sectors -= n; | |
1406 | buf += n * BDRV_SECTOR_SIZE; | |
1407 | } | |
1408 | ||
1409 | return 0; | |
1410 | } | |
1411 | ||
1412 | static int convert_do_copy(ImgConvertState *s) | |
1413 | { | |
1414 | uint8_t *buf = NULL; | |
1415 | int64_t sector_num, allocated_done; | |
1416 | int ret; | |
1417 | int n; | |
1418 | ||
1419 | /* Check whether we have zero initialisation or can get it efficiently */ | |
1420 | s->has_zero_init = s->min_sparse && !s->target_has_backing | |
1421 | ? bdrv_has_zero_init(blk_bs(s->target)) | |
1422 | : false; | |
1423 | ||
1424 | if (!s->has_zero_init && !s->target_has_backing && | |
1425 | bdrv_can_write_zeroes_with_unmap(blk_bs(s->target))) | |
1426 | { | |
1427 | ret = bdrv_make_zero(blk_bs(s->target), BDRV_REQ_MAY_UNMAP); | |
1428 | if (ret == 0) { | |
1429 | s->has_zero_init = true; | |
1430 | } | |
1431 | } | |
1432 | ||
1433 | /* Allocate buffer for copied data. For compressed images, only one cluster | |
1434 | * can be copied at a time. */ | |
1435 | if (s->compressed) { | |
1436 | if (s->cluster_sectors <= 0 || s->cluster_sectors > s->buf_sectors) { | |
1437 | error_report("invalid cluster size"); | |
1438 | ret = -EINVAL; | |
1439 | goto fail; | |
1440 | } | |
1441 | s->buf_sectors = s->cluster_sectors; | |
1442 | } | |
1443 | buf = blk_blockalign(s->target, s->buf_sectors * BDRV_SECTOR_SIZE); | |
1444 | ||
1445 | /* Calculate allocated sectors for progress */ | |
1446 | s->allocated_sectors = 0; | |
1447 | sector_num = 0; | |
1448 | while (sector_num < s->total_sectors) { | |
1449 | n = convert_iteration_sectors(s, sector_num); | |
1450 | if (n < 0) { | |
1451 | ret = n; | |
1452 | goto fail; | |
1453 | } | |
1454 | if (s->status == BLK_DATA) { | |
1455 | s->allocated_sectors += n; | |
1456 | } | |
1457 | sector_num += n; | |
1458 | } | |
1459 | ||
1460 | /* Do the copy */ | |
1461 | s->src_cur = 0; | |
1462 | s->src_cur_offset = 0; | |
1463 | s->sector_next_status = 0; | |
1464 | ||
1465 | sector_num = 0; | |
1466 | allocated_done = 0; | |
1467 | ||
1468 | while (sector_num < s->total_sectors) { | |
1469 | n = convert_iteration_sectors(s, sector_num); | |
1470 | if (n < 0) { | |
1471 | ret = n; | |
1472 | goto fail; | |
1473 | } | |
1474 | if (s->status == BLK_DATA) { | |
1475 | allocated_done += n; | |
1476 | qemu_progress_print(100.0 * allocated_done / s->allocated_sectors, | |
1477 | 0); | |
1478 | } | |
1479 | ||
1480 | ret = convert_read(s, sector_num, n, buf); | |
1481 | if (ret < 0) { | |
1482 | error_report("error while reading sector %" PRId64 | |
1483 | ": %s", sector_num, strerror(-ret)); | |
1484 | goto fail; | |
1485 | } | |
1486 | ||
1487 | ret = convert_write(s, sector_num, n, buf); | |
1488 | if (ret < 0) { | |
1489 | error_report("error while writing sector %" PRId64 | |
1490 | ": %s", sector_num, strerror(-ret)); | |
1491 | goto fail; | |
1492 | } | |
1493 | ||
1494 | sector_num += n; | |
1495 | } | |
1496 | ||
1497 | if (s->compressed) { | |
1498 | /* signal EOF to align */ | |
1499 | ret = blk_write_compressed(s->target, 0, NULL, 0); | |
1500 | if (ret < 0) { | |
1501 | goto fail; | |
1502 | } | |
1503 | } | |
1504 | ||
1505 | ret = 0; | |
1506 | fail: | |
1507 | qemu_vfree(buf); | |
1508 | return ret; | |
1509 | } | |
1510 | ||
ea2384d3 FB |
1511 | static int img_convert(int argc, char **argv) |
1512 | { | |
690c7301 | 1513 | int c, bs_n, bs_i, compress, cluster_sectors, skip_create; |
13c28af8 | 1514 | int64_t ret = 0; |
40055951 HR |
1515 | int progress = 0, flags, src_flags; |
1516 | const char *fmt, *out_fmt, *cache, *src_cache, *out_baseimg, *out_filename; | |
b50cbabc | 1517 | BlockDriver *drv, *proto_drv; |
26f54e9a | 1518 | BlockBackend **blk = NULL, *out_blk = NULL; |
c2abccec | 1519 | BlockDriverState **bs = NULL, *out_bs = NULL; |
690c7301 | 1520 | int64_t total_sectors; |
52bf1e72 | 1521 | int64_t *bs_sectors = NULL; |
f2521c90 | 1522 | size_t bufsectors = IO_BUF_SIZE / BDRV_SECTOR_SIZE; |
faea38e7 | 1523 | BlockDriverInfo bdi; |
83d0521a CL |
1524 | QemuOpts *opts = NULL; |
1525 | QemuOptsList *create_opts = NULL; | |
1526 | const char *out_baseimg_param; | |
efa84d43 | 1527 | char *options = NULL; |
51ef6727 | 1528 | const char *snapshot_name = NULL; |
a22f123c | 1529 | int min_sparse = 8; /* Need at least 4k of zeros for sparse detection */ |
f382d43a | 1530 | bool quiet = false; |
cc84d90f | 1531 | Error *local_err = NULL; |
ef80654d | 1532 | QemuOpts *sn_opts = NULL; |
690c7301 | 1533 | ImgConvertState state; |
ea2384d3 FB |
1534 | |
1535 | fmt = NULL; | |
1536 | out_fmt = "raw"; | |
661a0f71 | 1537 | cache = "unsafe"; |
40055951 | 1538 | src_cache = BDRV_DEFAULT_CACHE; |
f58c7b35 | 1539 | out_baseimg = NULL; |
eec77d9e | 1540 | compress = 0; |
b2e10493 | 1541 | skip_create = 0; |
ea2384d3 | 1542 | for(;;) { |
40055951 | 1543 | c = getopt(argc, argv, "hf:O:B:ce6o:s:l:S:pt:T:qn"); |
b8fb60da | 1544 | if (c == -1) { |
ea2384d3 | 1545 | break; |
b8fb60da | 1546 | } |
ea2384d3 | 1547 | switch(c) { |
ef87394c | 1548 | case '?': |
ea2384d3 FB |
1549 | case 'h': |
1550 | help(); | |
1551 | break; | |
1552 | case 'f': | |
1553 | fmt = optarg; | |
1554 | break; | |
1555 | case 'O': | |
1556 | out_fmt = optarg; | |
1557 | break; | |
f58c7b35 TS |
1558 | case 'B': |
1559 | out_baseimg = optarg; | |
1560 | break; | |
ea2384d3 | 1561 | case 'c': |
eec77d9e | 1562 | compress = 1; |
ea2384d3 FB |
1563 | break; |
1564 | case 'e': | |
9d42e15d | 1565 | error_report("option -e is deprecated, please use \'-o " |
eec77d9e | 1566 | "encryption\' instead!"); |
2dc8328b | 1567 | ret = -1; |
64bb01aa | 1568 | goto fail_getopt; |
ec36ba14 | 1569 | case '6': |
9d42e15d | 1570 | error_report("option -6 is deprecated, please use \'-o " |
eec77d9e | 1571 | "compat6\' instead!"); |
2dc8328b | 1572 | ret = -1; |
64bb01aa | 1573 | goto fail_getopt; |
efa84d43 | 1574 | case 'o': |
2dc8328b KW |
1575 | if (!is_valid_option_list(optarg)) { |
1576 | error_report("Invalid option list: %s", optarg); | |
1577 | ret = -1; | |
64bb01aa | 1578 | goto fail_getopt; |
2dc8328b KW |
1579 | } |
1580 | if (!options) { | |
1581 | options = g_strdup(optarg); | |
1582 | } else { | |
1583 | char *old_options = options; | |
1584 | options = g_strdup_printf("%s,%s", options, optarg); | |
1585 | g_free(old_options); | |
1586 | } | |
efa84d43 | 1587 | break; |
51ef6727 | 1588 | case 's': |
1589 | snapshot_name = optarg; | |
1590 | break; | |
ef80654d WX |
1591 | case 'l': |
1592 | if (strstart(optarg, SNAPSHOT_OPT_BASE, NULL)) { | |
1593 | sn_opts = qemu_opts_parse(&internal_snapshot_opts, optarg, 0); | |
1594 | if (!sn_opts) { | |
1595 | error_report("Failed in parsing snapshot param '%s'", | |
1596 | optarg); | |
2dc8328b | 1597 | ret = -1; |
64bb01aa | 1598 | goto fail_getopt; |
ef80654d WX |
1599 | } |
1600 | } else { | |
1601 | snapshot_name = optarg; | |
1602 | } | |
1603 | break; | |
a22f123c KW |
1604 | case 'S': |
1605 | { | |
1606 | int64_t sval; | |
e36b3695 MA |
1607 | char *end; |
1608 | sval = strtosz_suffix(optarg, &end, STRTOSZ_DEFSUFFIX_B); | |
1609 | if (sval < 0 || *end) { | |
a22f123c | 1610 | error_report("Invalid minimum zero buffer size for sparse output specified"); |
2dc8328b | 1611 | ret = -1; |
64bb01aa | 1612 | goto fail_getopt; |
a22f123c KW |
1613 | } |
1614 | ||
1615 | min_sparse = sval / BDRV_SECTOR_SIZE; | |
1616 | break; | |
1617 | } | |
6b837bc4 JS |
1618 | case 'p': |
1619 | progress = 1; | |
1620 | break; | |
661a0f71 FS |
1621 | case 't': |
1622 | cache = optarg; | |
1623 | break; | |
40055951 HR |
1624 | case 'T': |
1625 | src_cache = optarg; | |
1626 | break; | |
f382d43a MR |
1627 | case 'q': |
1628 | quiet = true; | |
1629 | break; | |
b2e10493 AD |
1630 | case 'n': |
1631 | skip_create = 1; | |
1632 | break; | |
ea2384d3 FB |
1633 | } |
1634 | } | |
3b46e624 | 1635 | |
64bb01aa | 1636 | /* Initialize before goto out */ |
f382d43a MR |
1637 | if (quiet) { |
1638 | progress = 0; | |
1639 | } | |
64bb01aa KW |
1640 | qemu_progress_init(progress, 1.0); |
1641 | ||
f382d43a | 1642 | |
926c2d23 | 1643 | bs_n = argc - optind - 1; |
a283cb6e | 1644 | out_filename = bs_n >= 1 ? argv[argc - 1] : NULL; |
f58c7b35 | 1645 | |
2dc8328b | 1646 | if (options && has_help_option(options)) { |
4ac8aacd JS |
1647 | ret = print_block_option_help(out_filename, out_fmt); |
1648 | goto out; | |
1649 | } | |
1650 | ||
a283cb6e | 1651 | if (bs_n < 1) { |
ac1307ab | 1652 | error_exit("Must specify image file name"); |
a283cb6e KW |
1653 | } |
1654 | ||
1655 | ||
c2abccec | 1656 | if (bs_n > 1 && out_baseimg) { |
15654a6d JS |
1657 | error_report("-B makes no sense when concatenating multiple input " |
1658 | "images"); | |
31ca34b8 JS |
1659 | ret = -1; |
1660 | goto out; | |
c2abccec | 1661 | } |
f8111c24 | 1662 | |
40055951 HR |
1663 | src_flags = BDRV_O_FLAGS; |
1664 | ret = bdrv_parse_cache_flags(src_cache, &src_flags); | |
1665 | if (ret < 0) { | |
1666 | error_report("Invalid source cache option: %s", src_cache); | |
1667 | goto out; | |
1668 | } | |
1669 | ||
6b837bc4 JS |
1670 | qemu_progress_print(0, 100); |
1671 | ||
26f54e9a | 1672 | blk = g_new0(BlockBackend *, bs_n); |
d739f1c4 | 1673 | bs = g_new0(BlockDriverState *, bs_n); |
52bf1e72 | 1674 | bs_sectors = g_new(int64_t, bs_n); |
926c2d23 AZ |
1675 | |
1676 | total_sectors = 0; | |
1677 | for (bs_i = 0; bs_i < bs_n; bs_i++) { | |
9aebf3b8 | 1678 | char *id = bs_n > 1 ? g_strdup_printf("source_%d", bs_i) |
9ffe3332 | 1679 | : g_strdup("source"); |
7e7d56d9 MA |
1680 | blk[bs_i] = img_open(id, argv[optind + bs_i], fmt, src_flags, |
1681 | true, quiet); | |
9ffe3332 | 1682 | g_free(id); |
7e7d56d9 | 1683 | if (!blk[bs_i]) { |
c2abccec MK |
1684 | ret = -1; |
1685 | goto out; | |
1686 | } | |
7e7d56d9 | 1687 | bs[bs_i] = blk_bs(blk[bs_i]); |
f1d3cd79 | 1688 | bs_sectors[bs_i] = blk_nb_sectors(blk[bs_i]); |
52bf1e72 MA |
1689 | if (bs_sectors[bs_i] < 0) { |
1690 | error_report("Could not get size of %s: %s", | |
1691 | argv[optind + bs_i], strerror(-bs_sectors[bs_i])); | |
1692 | ret = -1; | |
1693 | goto out; | |
1694 | } | |
d739f1c4 | 1695 | total_sectors += bs_sectors[bs_i]; |
926c2d23 | 1696 | } |
ea2384d3 | 1697 | |
ef80654d WX |
1698 | if (sn_opts) { |
1699 | ret = bdrv_snapshot_load_tmp(bs[0], | |
1700 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_ID), | |
1701 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_NAME), | |
1702 | &local_err); | |
1703 | } else if (snapshot_name != NULL) { | |
51ef6727 | 1704 | if (bs_n > 1) { |
6daf194d | 1705 | error_report("No support for concatenating multiple snapshot"); |
51ef6727 | 1706 | ret = -1; |
1707 | goto out; | |
1708 | } | |
7b4c4781 WX |
1709 | |
1710 | bdrv_snapshot_load_tmp_by_id_or_name(bs[0], snapshot_name, &local_err); | |
ef80654d | 1711 | } |
84d18f06 | 1712 | if (local_err) { |
ef80654d WX |
1713 | error_report("Failed to load snapshot: %s", |
1714 | error_get_pretty(local_err)); | |
1715 | error_free(local_err); | |
1716 | ret = -1; | |
1717 | goto out; | |
51ef6727 | 1718 | } |
1719 | ||
efa84d43 | 1720 | /* Find driver and parse its options */ |
ea2384d3 | 1721 | drv = bdrv_find_format(out_fmt); |
c2abccec | 1722 | if (!drv) { |
15654a6d | 1723 | error_report("Unknown file format '%s'", out_fmt); |
c2abccec MK |
1724 | ret = -1; |
1725 | goto out; | |
1726 | } | |
efa84d43 | 1727 | |
b65a5e12 | 1728 | proto_drv = bdrv_find_protocol(out_filename, true, &local_err); |
c2abccec | 1729 | if (!proto_drv) { |
2867ce4a | 1730 | error_report_err(local_err); |
c2abccec MK |
1731 | ret = -1; |
1732 | goto out; | |
1733 | } | |
b50cbabc | 1734 | |
2e024cde HR |
1735 | if (!skip_create) { |
1736 | if (!drv->create_opts) { | |
1737 | error_report("Format driver '%s' does not support image creation", | |
1738 | drv->format_name); | |
1739 | ret = -1; | |
1740 | goto out; | |
1741 | } | |
f75613cf | 1742 | |
2e024cde HR |
1743 | if (!proto_drv->create_opts) { |
1744 | error_report("Protocol driver '%s' does not support image creation", | |
1745 | proto_drv->format_name); | |
1746 | ret = -1; | |
1747 | goto out; | |
1748 | } | |
f75613cf | 1749 | |
2e024cde HR |
1750 | create_opts = qemu_opts_append(create_opts, drv->create_opts); |
1751 | create_opts = qemu_opts_append(create_opts, proto_drv->create_opts); | |
db08adf5 | 1752 | |
2e024cde | 1753 | opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); |
dc523cd3 MA |
1754 | if (options) { |
1755 | qemu_opts_do_parse(opts, options, NULL, &local_err); | |
1756 | if (local_err) { | |
97a2ca7a | 1757 | error_report_err(local_err); |
dc523cd3 MA |
1758 | ret = -1; |
1759 | goto out; | |
1760 | } | |
2e024cde | 1761 | } |
efa84d43 | 1762 | |
39101f25 MA |
1763 | qemu_opt_set_number(opts, BLOCK_OPT_SIZE, total_sectors * 512, |
1764 | &error_abort); | |
2e024cde HR |
1765 | ret = add_old_style_options(out_fmt, opts, out_baseimg, NULL); |
1766 | if (ret < 0) { | |
1767 | goto out; | |
1768 | } | |
c2abccec | 1769 | } |
efa84d43 | 1770 | |
a18953fb | 1771 | /* Get backing file name if -o backing_file was used */ |
83d0521a | 1772 | out_baseimg_param = qemu_opt_get(opts, BLOCK_OPT_BACKING_FILE); |
a18953fb | 1773 | if (out_baseimg_param) { |
83d0521a | 1774 | out_baseimg = out_baseimg_param; |
a18953fb KW |
1775 | } |
1776 | ||
efa84d43 | 1777 | /* Check if compression is supported */ |
eec77d9e | 1778 | if (compress) { |
83d0521a CL |
1779 | bool encryption = |
1780 | qemu_opt_get_bool(opts, BLOCK_OPT_ENCRYPT, false); | |
1781 | const char *preallocation = | |
1782 | qemu_opt_get(opts, BLOCK_OPT_PREALLOC); | |
efa84d43 KW |
1783 | |
1784 | if (!drv->bdrv_write_compressed) { | |
15654a6d | 1785 | error_report("Compression not supported for this file format"); |
c2abccec MK |
1786 | ret = -1; |
1787 | goto out; | |
efa84d43 KW |
1788 | } |
1789 | ||
83d0521a | 1790 | if (encryption) { |
15654a6d JS |
1791 | error_report("Compression and encryption not supported at " |
1792 | "the same time"); | |
c2abccec MK |
1793 | ret = -1; |
1794 | goto out; | |
efa84d43 | 1795 | } |
41521fa4 | 1796 | |
83d0521a CL |
1797 | if (preallocation |
1798 | && strcmp(preallocation, "off")) | |
41521fa4 KW |
1799 | { |
1800 | error_report("Compression and preallocation not supported at " | |
1801 | "the same time"); | |
1802 | ret = -1; | |
1803 | goto out; | |
1804 | } | |
efa84d43 KW |
1805 | } |
1806 | ||
b2e10493 AD |
1807 | if (!skip_create) { |
1808 | /* Create the new image */ | |
c282e1fd | 1809 | ret = bdrv_create(drv, out_filename, opts, &local_err); |
b2e10493 | 1810 | if (ret < 0) { |
cc84d90f HR |
1811 | error_report("%s: error while converting %s: %s", |
1812 | out_filename, out_fmt, error_get_pretty(local_err)); | |
1813 | error_free(local_err); | |
b2e10493 | 1814 | goto out; |
ea2384d3 FB |
1815 | } |
1816 | } | |
3b46e624 | 1817 | |
5a37b60a | 1818 | flags = min_sparse ? (BDRV_O_RDWR | BDRV_O_UNMAP) : BDRV_O_RDWR; |
c3993cdc | 1819 | ret = bdrv_parse_cache_flags(cache, &flags); |
661a0f71 FS |
1820 | if (ret < 0) { |
1821 | error_report("Invalid cache option: %s", cache); | |
bb9cd2ee | 1822 | goto out; |
661a0f71 FS |
1823 | } |
1824 | ||
7e7d56d9 MA |
1825 | out_blk = img_open("target", out_filename, out_fmt, flags, true, quiet); |
1826 | if (!out_blk) { | |
c2abccec MK |
1827 | ret = -1; |
1828 | goto out; | |
1829 | } | |
7e7d56d9 | 1830 | out_bs = blk_bs(out_blk); |
ea2384d3 | 1831 | |
f2521c90 PL |
1832 | /* increase bufsectors from the default 4096 (2M) if opt_transfer_length |
1833 | * or discard_alignment of the out_bs is greater. Limit to 32768 (16MB) | |
1834 | * as maximum. */ | |
1835 | bufsectors = MIN(32768, | |
1836 | MAX(bufsectors, MAX(out_bs->bl.opt_transfer_length, | |
1837 | out_bs->bl.discard_alignment)) | |
1838 | ); | |
1839 | ||
b2e10493 | 1840 | if (skip_create) { |
f1d3cd79 | 1841 | int64_t output_sectors = blk_nb_sectors(out_blk); |
43716fa8 | 1842 | if (output_sectors < 0) { |
eec5eb42 | 1843 | error_report("unable to get output image length: %s", |
43716fa8 | 1844 | strerror(-output_sectors)); |
b2e10493 AD |
1845 | ret = -1; |
1846 | goto out; | |
43716fa8 | 1847 | } else if (output_sectors < total_sectors) { |
b2e10493 AD |
1848 | error_report("output file is smaller than input file"); |
1849 | ret = -1; | |
1850 | goto out; | |
1851 | } | |
1852 | } | |
1853 | ||
24f833cd PL |
1854 | cluster_sectors = 0; |
1855 | ret = bdrv_get_info(out_bs, &bdi); | |
1856 | if (ret < 0) { | |
1857 | if (compress) { | |
15654a6d | 1858 | error_report("could not get block driver info"); |
c2abccec MK |
1859 | goto out; |
1860 | } | |
24f833cd | 1861 | } else { |
85f49cad | 1862 | compress = compress || bdi.needs_compressed_writes; |
24f833cd PL |
1863 | cluster_sectors = bdi.cluster_size / BDRV_SECTOR_SIZE; |
1864 | } | |
1865 | ||
690c7301 KW |
1866 | state = (ImgConvertState) { |
1867 | .src = blk, | |
1868 | .src_sectors = bs_sectors, | |
1869 | .src_num = bs_n, | |
1870 | .total_sectors = total_sectors, | |
1871 | .target = out_blk, | |
1872 | .compressed = compress, | |
1873 | .target_has_backing = (bool) out_baseimg, | |
1874 | .min_sparse = min_sparse, | |
1875 | .cluster_sectors = cluster_sectors, | |
1876 | .buf_sectors = bufsectors, | |
1877 | }; | |
1878 | ret = convert_do_copy(&state); | |
802c3d4c | 1879 | |
c2abccec | 1880 | out: |
13c28af8 PL |
1881 | if (!ret) { |
1882 | qemu_progress_print(100, 0); | |
1883 | } | |
6b837bc4 | 1884 | qemu_progress_end(); |
83d0521a CL |
1885 | qemu_opts_del(opts); |
1886 | qemu_opts_free(create_opts); | |
fbf28a43 | 1887 | qemu_opts_del(sn_opts); |
26f54e9a | 1888 | blk_unref(out_blk); |
9ba10c95 | 1889 | g_free(bs); |
26f54e9a MA |
1890 | if (blk) { |
1891 | for (bs_i = 0; bs_i < bs_n; bs_i++) { | |
1892 | blk_unref(blk[bs_i]); | |
1893 | } | |
1894 | g_free(blk); | |
1895 | } | |
d739f1c4 | 1896 | g_free(bs_sectors); |
64bb01aa KW |
1897 | fail_getopt: |
1898 | g_free(options); | |
1899 | ||
c2abccec MK |
1900 | if (ret) { |
1901 | return 1; | |
1902 | } | |
ea2384d3 FB |
1903 | return 0; |
1904 | } | |
1905 | ||
57d1a2b6 | 1906 | |
faea38e7 FB |
1907 | static void dump_snapshots(BlockDriverState *bs) |
1908 | { | |
1909 | QEMUSnapshotInfo *sn_tab, *sn; | |
1910 | int nb_sns, i; | |
faea38e7 FB |
1911 | |
1912 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
1913 | if (nb_sns <= 0) | |
1914 | return; | |
1915 | printf("Snapshot list:\n"); | |
5b917044 WX |
1916 | bdrv_snapshot_dump(fprintf, stdout, NULL); |
1917 | printf("\n"); | |
faea38e7 FB |
1918 | for(i = 0; i < nb_sns; i++) { |
1919 | sn = &sn_tab[i]; | |
5b917044 WX |
1920 | bdrv_snapshot_dump(fprintf, stdout, sn); |
1921 | printf("\n"); | |
faea38e7 | 1922 | } |
7267c094 | 1923 | g_free(sn_tab); |
faea38e7 FB |
1924 | } |
1925 | ||
9699bf0d SH |
1926 | static void dump_json_image_info_list(ImageInfoList *list) |
1927 | { | |
4399c438 | 1928 | Error *local_err = NULL; |
9699bf0d SH |
1929 | QString *str; |
1930 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
1931 | QObject *obj; | |
1932 | visit_type_ImageInfoList(qmp_output_get_visitor(ov), | |
4399c438 | 1933 | &list, NULL, &local_err); |
9699bf0d SH |
1934 | obj = qmp_output_get_qobject(ov); |
1935 | str = qobject_to_json_pretty(obj); | |
1936 | assert(str != NULL); | |
1937 | printf("%s\n", qstring_get_str(str)); | |
1938 | qobject_decref(obj); | |
1939 | qmp_output_visitor_cleanup(ov); | |
1940 | QDECREF(str); | |
1941 | } | |
1942 | ||
c054b3fd BC |
1943 | static void dump_json_image_info(ImageInfo *info) |
1944 | { | |
4399c438 | 1945 | Error *local_err = NULL; |
c054b3fd BC |
1946 | QString *str; |
1947 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
1948 | QObject *obj; | |
1949 | visit_type_ImageInfo(qmp_output_get_visitor(ov), | |
4399c438 | 1950 | &info, NULL, &local_err); |
c054b3fd BC |
1951 | obj = qmp_output_get_qobject(ov); |
1952 | str = qobject_to_json_pretty(obj); | |
1953 | assert(str != NULL); | |
1954 | printf("%s\n", qstring_get_str(str)); | |
1955 | qobject_decref(obj); | |
1956 | qmp_output_visitor_cleanup(ov); | |
1957 | QDECREF(str); | |
1958 | } | |
1959 | ||
9699bf0d SH |
1960 | static void dump_human_image_info_list(ImageInfoList *list) |
1961 | { | |
1962 | ImageInfoList *elem; | |
1963 | bool delim = false; | |
1964 | ||
1965 | for (elem = list; elem; elem = elem->next) { | |
1966 | if (delim) { | |
1967 | printf("\n"); | |
1968 | } | |
1969 | delim = true; | |
1970 | ||
5b917044 | 1971 | bdrv_image_info_dump(fprintf, stdout, elem->value); |
9699bf0d SH |
1972 | } |
1973 | } | |
1974 | ||
1975 | static gboolean str_equal_func(gconstpointer a, gconstpointer b) | |
1976 | { | |
1977 | return strcmp(a, b) == 0; | |
1978 | } | |
1979 | ||
1980 | /** | |
1981 | * Open an image file chain and return an ImageInfoList | |
1982 | * | |
1983 | * @filename: topmost image filename | |
1984 | * @fmt: topmost image format (may be NULL to autodetect) | |
1985 | * @chain: true - enumerate entire backing file chain | |
1986 | * false - only topmost image file | |
1987 | * | |
1988 | * Returns a list of ImageInfo objects or NULL if there was an error opening an | |
1989 | * image file. If there was an error a message will have been printed to | |
1990 | * stderr. | |
1991 | */ | |
1992 | static ImageInfoList *collect_image_info_list(const char *filename, | |
1993 | const char *fmt, | |
1994 | bool chain) | |
1995 | { | |
1996 | ImageInfoList *head = NULL; | |
1997 | ImageInfoList **last = &head; | |
1998 | GHashTable *filenames; | |
43526ec8 | 1999 | Error *err = NULL; |
9699bf0d SH |
2000 | |
2001 | filenames = g_hash_table_new_full(g_str_hash, str_equal_func, NULL, NULL); | |
2002 | ||
2003 | while (filename) { | |
26f54e9a | 2004 | BlockBackend *blk; |
9699bf0d SH |
2005 | BlockDriverState *bs; |
2006 | ImageInfo *info; | |
2007 | ImageInfoList *elem; | |
2008 | ||
2009 | if (g_hash_table_lookup_extended(filenames, filename, NULL, NULL)) { | |
2010 | error_report("Backing file '%s' creates an infinite loop.", | |
2011 | filename); | |
2012 | goto err; | |
2013 | } | |
2014 | g_hash_table_insert(filenames, (gpointer)filename, NULL); | |
2015 | ||
7e7d56d9 MA |
2016 | blk = img_open("image", filename, fmt, |
2017 | BDRV_O_FLAGS | BDRV_O_NO_BACKING, false, false); | |
2018 | if (!blk) { | |
9699bf0d SH |
2019 | goto err; |
2020 | } | |
7e7d56d9 | 2021 | bs = blk_bs(blk); |
9699bf0d | 2022 | |
43526ec8 | 2023 | bdrv_query_image_info(bs, &info, &err); |
84d18f06 | 2024 | if (err) { |
565f65d2 | 2025 | error_report_err(err); |
26f54e9a | 2026 | blk_unref(blk); |
43526ec8 | 2027 | goto err; |
fb0ed453 | 2028 | } |
9699bf0d SH |
2029 | |
2030 | elem = g_new0(ImageInfoList, 1); | |
2031 | elem->value = info; | |
2032 | *last = elem; | |
2033 | last = &elem->next; | |
2034 | ||
26f54e9a | 2035 | blk_unref(blk); |
9699bf0d SH |
2036 | |
2037 | filename = fmt = NULL; | |
2038 | if (chain) { | |
2039 | if (info->has_full_backing_filename) { | |
2040 | filename = info->full_backing_filename; | |
2041 | } else if (info->has_backing_filename) { | |
2042 | filename = info->backing_filename; | |
2043 | } | |
2044 | if (info->has_backing_filename_format) { | |
2045 | fmt = info->backing_filename_format; | |
2046 | } | |
2047 | } | |
2048 | } | |
2049 | g_hash_table_destroy(filenames); | |
2050 | return head; | |
2051 | ||
2052 | err: | |
2053 | qapi_free_ImageInfoList(head); | |
2054 | g_hash_table_destroy(filenames); | |
2055 | return NULL; | |
2056 | } | |
2057 | ||
c054b3fd BC |
2058 | static int img_info(int argc, char **argv) |
2059 | { | |
2060 | int c; | |
2061 | OutputFormat output_format = OFORMAT_HUMAN; | |
9699bf0d | 2062 | bool chain = false; |
c054b3fd | 2063 | const char *filename, *fmt, *output; |
9699bf0d | 2064 | ImageInfoList *list; |
c054b3fd | 2065 | |
ea2384d3 | 2066 | fmt = NULL; |
c054b3fd | 2067 | output = NULL; |
ea2384d3 | 2068 | for(;;) { |
c054b3fd BC |
2069 | int option_index = 0; |
2070 | static const struct option long_options[] = { | |
2071 | {"help", no_argument, 0, 'h'}, | |
2072 | {"format", required_argument, 0, 'f'}, | |
2073 | {"output", required_argument, 0, OPTION_OUTPUT}, | |
9699bf0d | 2074 | {"backing-chain", no_argument, 0, OPTION_BACKING_CHAIN}, |
c054b3fd BC |
2075 | {0, 0, 0, 0} |
2076 | }; | |
2077 | c = getopt_long(argc, argv, "f:h", | |
2078 | long_options, &option_index); | |
b8fb60da | 2079 | if (c == -1) { |
ea2384d3 | 2080 | break; |
b8fb60da | 2081 | } |
ea2384d3 | 2082 | switch(c) { |
ef87394c | 2083 | case '?': |
ea2384d3 FB |
2084 | case 'h': |
2085 | help(); | |
2086 | break; | |
2087 | case 'f': | |
2088 | fmt = optarg; | |
2089 | break; | |
c054b3fd BC |
2090 | case OPTION_OUTPUT: |
2091 | output = optarg; | |
2092 | break; | |
9699bf0d SH |
2093 | case OPTION_BACKING_CHAIN: |
2094 | chain = true; | |
2095 | break; | |
ea2384d3 FB |
2096 | } |
2097 | } | |
fc11eb26 | 2098 | if (optind != argc - 1) { |
ac1307ab | 2099 | error_exit("Expecting one image file name"); |
b8fb60da | 2100 | } |
ea2384d3 FB |
2101 | filename = argv[optind++]; |
2102 | ||
c054b3fd BC |
2103 | if (output && !strcmp(output, "json")) { |
2104 | output_format = OFORMAT_JSON; | |
2105 | } else if (output && !strcmp(output, "human")) { | |
2106 | output_format = OFORMAT_HUMAN; | |
2107 | } else if (output) { | |
2108 | error_report("--output must be used with human or json as argument."); | |
c2abccec MK |
2109 | return 1; |
2110 | } | |
c054b3fd | 2111 | |
9699bf0d SH |
2112 | list = collect_image_info_list(filename, fmt, chain); |
2113 | if (!list) { | |
c2abccec | 2114 | return 1; |
faea38e7 | 2115 | } |
c054b3fd | 2116 | |
c054b3fd BC |
2117 | switch (output_format) { |
2118 | case OFORMAT_HUMAN: | |
9699bf0d | 2119 | dump_human_image_info_list(list); |
c054b3fd BC |
2120 | break; |
2121 | case OFORMAT_JSON: | |
9699bf0d SH |
2122 | if (chain) { |
2123 | dump_json_image_info_list(list); | |
2124 | } else { | |
2125 | dump_json_image_info(list->value); | |
2126 | } | |
c054b3fd | 2127 | break; |
faea38e7 | 2128 | } |
c054b3fd | 2129 | |
9699bf0d | 2130 | qapi_free_ImageInfoList(list); |
ea2384d3 FB |
2131 | return 0; |
2132 | } | |
2133 | ||
4c93a13b PB |
2134 | |
2135 | typedef struct MapEntry { | |
2136 | int flags; | |
2137 | int depth; | |
2138 | int64_t start; | |
2139 | int64_t length; | |
2140 | int64_t offset; | |
2141 | BlockDriverState *bs; | |
2142 | } MapEntry; | |
2143 | ||
2144 | static void dump_map_entry(OutputFormat output_format, MapEntry *e, | |
2145 | MapEntry *next) | |
2146 | { | |
2147 | switch (output_format) { | |
2148 | case OFORMAT_HUMAN: | |
2149 | if ((e->flags & BDRV_BLOCK_DATA) && | |
2150 | !(e->flags & BDRV_BLOCK_OFFSET_VALID)) { | |
2151 | error_report("File contains external, encrypted or compressed clusters."); | |
2152 | exit(1); | |
2153 | } | |
2154 | if ((e->flags & (BDRV_BLOCK_DATA|BDRV_BLOCK_ZERO)) == BDRV_BLOCK_DATA) { | |
2155 | printf("%#-16"PRIx64"%#-16"PRIx64"%#-16"PRIx64"%s\n", | |
2156 | e->start, e->length, e->offset, e->bs->filename); | |
2157 | } | |
2158 | /* This format ignores the distinction between 0, ZERO and ZERO|DATA. | |
2159 | * Modify the flags here to allow more coalescing. | |
2160 | */ | |
2161 | if (next && | |
2162 | (next->flags & (BDRV_BLOCK_DATA|BDRV_BLOCK_ZERO)) != BDRV_BLOCK_DATA) { | |
2163 | next->flags &= ~BDRV_BLOCK_DATA; | |
2164 | next->flags |= BDRV_BLOCK_ZERO; | |
2165 | } | |
2166 | break; | |
2167 | case OFORMAT_JSON: | |
2168 | printf("%s{ \"start\": %"PRId64", \"length\": %"PRId64", \"depth\": %d," | |
2169 | " \"zero\": %s, \"data\": %s", | |
2170 | (e->start == 0 ? "[" : ",\n"), | |
2171 | e->start, e->length, e->depth, | |
2172 | (e->flags & BDRV_BLOCK_ZERO) ? "true" : "false", | |
2173 | (e->flags & BDRV_BLOCK_DATA) ? "true" : "false"); | |
2174 | if (e->flags & BDRV_BLOCK_OFFSET_VALID) { | |
c745bfb4 | 2175 | printf(", \"offset\": %"PRId64"", e->offset); |
4c93a13b PB |
2176 | } |
2177 | putchar('}'); | |
2178 | ||
2179 | if (!next) { | |
2180 | printf("]\n"); | |
2181 | } | |
2182 | break; | |
2183 | } | |
2184 | } | |
2185 | ||
2186 | static int get_block_status(BlockDriverState *bs, int64_t sector_num, | |
2187 | int nb_sectors, MapEntry *e) | |
2188 | { | |
2189 | int64_t ret; | |
2190 | int depth; | |
2191 | ||
2192 | /* As an optimization, we could cache the current range of unallocated | |
2193 | * clusters in each file of the chain, and avoid querying the same | |
2194 | * range repeatedly. | |
2195 | */ | |
2196 | ||
2197 | depth = 0; | |
2198 | for (;;) { | |
2199 | ret = bdrv_get_block_status(bs, sector_num, nb_sectors, &nb_sectors); | |
2200 | if (ret < 0) { | |
2201 | return ret; | |
2202 | } | |
2203 | assert(nb_sectors); | |
2204 | if (ret & (BDRV_BLOCK_ZERO|BDRV_BLOCK_DATA)) { | |
2205 | break; | |
2206 | } | |
2207 | bs = bs->backing_hd; | |
2208 | if (bs == NULL) { | |
2209 | ret = 0; | |
2210 | break; | |
2211 | } | |
2212 | ||
2213 | depth++; | |
2214 | } | |
2215 | ||
2216 | e->start = sector_num * BDRV_SECTOR_SIZE; | |
2217 | e->length = nb_sectors * BDRV_SECTOR_SIZE; | |
2218 | e->flags = ret & ~BDRV_BLOCK_OFFSET_MASK; | |
2219 | e->offset = ret & BDRV_BLOCK_OFFSET_MASK; | |
2220 | e->depth = depth; | |
2221 | e->bs = bs; | |
2222 | return 0; | |
2223 | } | |
2224 | ||
2225 | static int img_map(int argc, char **argv) | |
2226 | { | |
2227 | int c; | |
2228 | OutputFormat output_format = OFORMAT_HUMAN; | |
26f54e9a | 2229 | BlockBackend *blk; |
4c93a13b PB |
2230 | BlockDriverState *bs; |
2231 | const char *filename, *fmt, *output; | |
2232 | int64_t length; | |
2233 | MapEntry curr = { .length = 0 }, next; | |
2234 | int ret = 0; | |
2235 | ||
2236 | fmt = NULL; | |
2237 | output = NULL; | |
2238 | for (;;) { | |
2239 | int option_index = 0; | |
2240 | static const struct option long_options[] = { | |
2241 | {"help", no_argument, 0, 'h'}, | |
2242 | {"format", required_argument, 0, 'f'}, | |
2243 | {"output", required_argument, 0, OPTION_OUTPUT}, | |
2244 | {0, 0, 0, 0} | |
2245 | }; | |
2246 | c = getopt_long(argc, argv, "f:h", | |
2247 | long_options, &option_index); | |
2248 | if (c == -1) { | |
2249 | break; | |
2250 | } | |
2251 | switch (c) { | |
2252 | case '?': | |
2253 | case 'h': | |
2254 | help(); | |
2255 | break; | |
2256 | case 'f': | |
2257 | fmt = optarg; | |
2258 | break; | |
2259 | case OPTION_OUTPUT: | |
2260 | output = optarg; | |
2261 | break; | |
2262 | } | |
2263 | } | |
ac1307ab FZ |
2264 | if (optind != argc - 1) { |
2265 | error_exit("Expecting one image file name"); | |
4c93a13b | 2266 | } |
ac1307ab | 2267 | filename = argv[optind]; |
4c93a13b PB |
2268 | |
2269 | if (output && !strcmp(output, "json")) { | |
2270 | output_format = OFORMAT_JSON; | |
2271 | } else if (output && !strcmp(output, "human")) { | |
2272 | output_format = OFORMAT_HUMAN; | |
2273 | } else if (output) { | |
2274 | error_report("--output must be used with human or json as argument."); | |
2275 | return 1; | |
2276 | } | |
2277 | ||
7e7d56d9 MA |
2278 | blk = img_open("image", filename, fmt, BDRV_O_FLAGS, true, false); |
2279 | if (!blk) { | |
2280 | return 1; | |
4c93a13b | 2281 | } |
7e7d56d9 | 2282 | bs = blk_bs(blk); |
4c93a13b PB |
2283 | |
2284 | if (output_format == OFORMAT_HUMAN) { | |
2285 | printf("%-16s%-16s%-16s%s\n", "Offset", "Length", "Mapped to", "File"); | |
2286 | } | |
2287 | ||
f1d3cd79 | 2288 | length = blk_getlength(blk); |
4c93a13b PB |
2289 | while (curr.start + curr.length < length) { |
2290 | int64_t nsectors_left; | |
2291 | int64_t sector_num; | |
2292 | int n; | |
2293 | ||
2294 | sector_num = (curr.start + curr.length) >> BDRV_SECTOR_BITS; | |
2295 | ||
2296 | /* Probe up to 1 GiB at a time. */ | |
2297 | nsectors_left = DIV_ROUND_UP(length, BDRV_SECTOR_SIZE) - sector_num; | |
2298 | n = MIN(1 << (30 - BDRV_SECTOR_BITS), nsectors_left); | |
2299 | ret = get_block_status(bs, sector_num, n, &next); | |
2300 | ||
2301 | if (ret < 0) { | |
2302 | error_report("Could not read file metadata: %s", strerror(-ret)); | |
2303 | goto out; | |
2304 | } | |
2305 | ||
2306 | if (curr.length != 0 && curr.flags == next.flags && | |
2307 | curr.depth == next.depth && | |
2308 | ((curr.flags & BDRV_BLOCK_OFFSET_VALID) == 0 || | |
2309 | curr.offset + curr.length == next.offset)) { | |
2310 | curr.length += next.length; | |
2311 | continue; | |
2312 | } | |
2313 | ||
2314 | if (curr.length > 0) { | |
2315 | dump_map_entry(output_format, &curr, &next); | |
2316 | } | |
2317 | curr = next; | |
2318 | } | |
2319 | ||
2320 | dump_map_entry(output_format, &curr, NULL); | |
2321 | ||
2322 | out: | |
26f54e9a | 2323 | blk_unref(blk); |
4c93a13b PB |
2324 | return ret < 0; |
2325 | } | |
2326 | ||
f7b4a940 AL |
2327 | #define SNAPSHOT_LIST 1 |
2328 | #define SNAPSHOT_CREATE 2 | |
2329 | #define SNAPSHOT_APPLY 3 | |
2330 | #define SNAPSHOT_DELETE 4 | |
2331 | ||
153859be | 2332 | static int img_snapshot(int argc, char **argv) |
f7b4a940 | 2333 | { |
26f54e9a | 2334 | BlockBackend *blk; |
f7b4a940 AL |
2335 | BlockDriverState *bs; |
2336 | QEMUSnapshotInfo sn; | |
2337 | char *filename, *snapshot_name = NULL; | |
c2abccec | 2338 | int c, ret = 0, bdrv_oflags; |
f7b4a940 AL |
2339 | int action = 0; |
2340 | qemu_timeval tv; | |
f382d43a | 2341 | bool quiet = false; |
a89d89d3 | 2342 | Error *err = NULL; |
f7b4a940 | 2343 | |
710da702 | 2344 | bdrv_oflags = BDRV_O_FLAGS | BDRV_O_RDWR; |
f7b4a940 AL |
2345 | /* Parse commandline parameters */ |
2346 | for(;;) { | |
f382d43a | 2347 | c = getopt(argc, argv, "la:c:d:hq"); |
b8fb60da | 2348 | if (c == -1) { |
f7b4a940 | 2349 | break; |
b8fb60da | 2350 | } |
f7b4a940 | 2351 | switch(c) { |
ef87394c | 2352 | case '?': |
f7b4a940 AL |
2353 | case 'h': |
2354 | help(); | |
153859be | 2355 | return 0; |
f7b4a940 AL |
2356 | case 'l': |
2357 | if (action) { | |
ac1307ab | 2358 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2359 | return 0; |
f7b4a940 AL |
2360 | } |
2361 | action = SNAPSHOT_LIST; | |
f5edb014 | 2362 | bdrv_oflags &= ~BDRV_O_RDWR; /* no need for RW */ |
f7b4a940 AL |
2363 | break; |
2364 | case 'a': | |
2365 | if (action) { | |
ac1307ab | 2366 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2367 | return 0; |
f7b4a940 AL |
2368 | } |
2369 | action = SNAPSHOT_APPLY; | |
2370 | snapshot_name = optarg; | |
2371 | break; | |
2372 | case 'c': | |
2373 | if (action) { | |
ac1307ab | 2374 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2375 | return 0; |
f7b4a940 AL |
2376 | } |
2377 | action = SNAPSHOT_CREATE; | |
2378 | snapshot_name = optarg; | |
2379 | break; | |
2380 | case 'd': | |
2381 | if (action) { | |
ac1307ab | 2382 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2383 | return 0; |
f7b4a940 AL |
2384 | } |
2385 | action = SNAPSHOT_DELETE; | |
2386 | snapshot_name = optarg; | |
2387 | break; | |
f382d43a MR |
2388 | case 'q': |
2389 | quiet = true; | |
2390 | break; | |
f7b4a940 AL |
2391 | } |
2392 | } | |
2393 | ||
fc11eb26 | 2394 | if (optind != argc - 1) { |
ac1307ab | 2395 | error_exit("Expecting one image file name"); |
b8fb60da | 2396 | } |
f7b4a940 AL |
2397 | filename = argv[optind++]; |
2398 | ||
2399 | /* Open the image */ | |
7e7d56d9 MA |
2400 | blk = img_open("image", filename, NULL, bdrv_oflags, true, quiet); |
2401 | if (!blk) { | |
2402 | return 1; | |
c2abccec | 2403 | } |
7e7d56d9 | 2404 | bs = blk_bs(blk); |
f7b4a940 AL |
2405 | |
2406 | /* Perform the requested action */ | |
2407 | switch(action) { | |
2408 | case SNAPSHOT_LIST: | |
2409 | dump_snapshots(bs); | |
2410 | break; | |
2411 | ||
2412 | case SNAPSHOT_CREATE: | |
2413 | memset(&sn, 0, sizeof(sn)); | |
2414 | pstrcpy(sn.name, sizeof(sn.name), snapshot_name); | |
2415 | ||
2416 | qemu_gettimeofday(&tv); | |
2417 | sn.date_sec = tv.tv_sec; | |
2418 | sn.date_nsec = tv.tv_usec * 1000; | |
2419 | ||
2420 | ret = bdrv_snapshot_create(bs, &sn); | |
b8fb60da | 2421 | if (ret) { |
15654a6d | 2422 | error_report("Could not create snapshot '%s': %d (%s)", |
f7b4a940 | 2423 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 2424 | } |
f7b4a940 AL |
2425 | break; |
2426 | ||
2427 | case SNAPSHOT_APPLY: | |
2428 | ret = bdrv_snapshot_goto(bs, snapshot_name); | |
b8fb60da | 2429 | if (ret) { |
15654a6d | 2430 | error_report("Could not apply snapshot '%s': %d (%s)", |
f7b4a940 | 2431 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 2432 | } |
f7b4a940 AL |
2433 | break; |
2434 | ||
2435 | case SNAPSHOT_DELETE: | |
a89d89d3 | 2436 | bdrv_snapshot_delete_by_id_or_name(bs, snapshot_name, &err); |
84d18f06 | 2437 | if (err) { |
a89d89d3 WX |
2438 | error_report("Could not delete snapshot '%s': (%s)", |
2439 | snapshot_name, error_get_pretty(err)); | |
2440 | error_free(err); | |
2441 | ret = 1; | |
b8fb60da | 2442 | } |
f7b4a940 AL |
2443 | break; |
2444 | } | |
2445 | ||
2446 | /* Cleanup */ | |
26f54e9a | 2447 | blk_unref(blk); |
c2abccec MK |
2448 | if (ret) { |
2449 | return 1; | |
2450 | } | |
153859be | 2451 | return 0; |
f7b4a940 AL |
2452 | } |
2453 | ||
3e85c6fd KW |
2454 | static int img_rebase(int argc, char **argv) |
2455 | { | |
26f54e9a | 2456 | BlockBackend *blk = NULL, *blk_old_backing = NULL, *blk_new_backing = NULL; |
f1d3cd79 | 2457 | BlockDriverState *bs = NULL; |
3e85c6fd | 2458 | char *filename; |
40055951 HR |
2459 | const char *fmt, *cache, *src_cache, *out_basefmt, *out_baseimg; |
2460 | int c, flags, src_flags, ret; | |
3e85c6fd | 2461 | int unsafe = 0; |
6b837bc4 | 2462 | int progress = 0; |
f382d43a | 2463 | bool quiet = false; |
34b5d2c6 | 2464 | Error *local_err = NULL; |
3e85c6fd KW |
2465 | |
2466 | /* Parse commandline parameters */ | |
e53dbee0 | 2467 | fmt = NULL; |
661a0f71 | 2468 | cache = BDRV_DEFAULT_CACHE; |
40055951 | 2469 | src_cache = BDRV_DEFAULT_CACHE; |
3e85c6fd KW |
2470 | out_baseimg = NULL; |
2471 | out_basefmt = NULL; | |
3e85c6fd | 2472 | for(;;) { |
40055951 | 2473 | c = getopt(argc, argv, "hf:F:b:upt:T:q"); |
b8fb60da | 2474 | if (c == -1) { |
3e85c6fd | 2475 | break; |
b8fb60da | 2476 | } |
3e85c6fd | 2477 | switch(c) { |
ef87394c | 2478 | case '?': |
3e85c6fd KW |
2479 | case 'h': |
2480 | help(); | |
2481 | return 0; | |
e53dbee0 KW |
2482 | case 'f': |
2483 | fmt = optarg; | |
2484 | break; | |
3e85c6fd KW |
2485 | case 'F': |
2486 | out_basefmt = optarg; | |
2487 | break; | |
2488 | case 'b': | |
2489 | out_baseimg = optarg; | |
2490 | break; | |
2491 | case 'u': | |
2492 | unsafe = 1; | |
2493 | break; | |
6b837bc4 JS |
2494 | case 'p': |
2495 | progress = 1; | |
2496 | break; | |
661a0f71 FS |
2497 | case 't': |
2498 | cache = optarg; | |
2499 | break; | |
40055951 HR |
2500 | case 'T': |
2501 | src_cache = optarg; | |
2502 | break; | |
f382d43a MR |
2503 | case 'q': |
2504 | quiet = true; | |
2505 | break; | |
3e85c6fd KW |
2506 | } |
2507 | } | |
2508 | ||
f382d43a MR |
2509 | if (quiet) { |
2510 | progress = 0; | |
2511 | } | |
2512 | ||
ac1307ab FZ |
2513 | if (optind != argc - 1) { |
2514 | error_exit("Expecting one image file name"); | |
2515 | } | |
2516 | if (!unsafe && !out_baseimg) { | |
2517 | error_exit("Must specify backing file (-b) or use unsafe mode (-u)"); | |
b8fb60da | 2518 | } |
3e85c6fd KW |
2519 | filename = argv[optind++]; |
2520 | ||
6b837bc4 JS |
2521 | qemu_progress_init(progress, 2.0); |
2522 | qemu_progress_print(0, 100); | |
2523 | ||
661a0f71 | 2524 | flags = BDRV_O_RDWR | (unsafe ? BDRV_O_NO_BACKING : 0); |
c3993cdc | 2525 | ret = bdrv_parse_cache_flags(cache, &flags); |
661a0f71 FS |
2526 | if (ret < 0) { |
2527 | error_report("Invalid cache option: %s", cache); | |
40ed35a3 | 2528 | goto out; |
661a0f71 FS |
2529 | } |
2530 | ||
40055951 HR |
2531 | src_flags = BDRV_O_FLAGS; |
2532 | ret = bdrv_parse_cache_flags(src_cache, &src_flags); | |
2533 | if (ret < 0) { | |
2534 | error_report("Invalid source cache option: %s", src_cache); | |
40ed35a3 | 2535 | goto out; |
40055951 HR |
2536 | } |
2537 | ||
3e85c6fd KW |
2538 | /* |
2539 | * Open the images. | |
2540 | * | |
2541 | * Ignore the old backing file for unsafe rebase in case we want to correct | |
2542 | * the reference to a renamed or moved backing file. | |
2543 | */ | |
7e7d56d9 MA |
2544 | blk = img_open("image", filename, fmt, flags, true, quiet); |
2545 | if (!blk) { | |
40ed35a3 SH |
2546 | ret = -1; |
2547 | goto out; | |
c2abccec | 2548 | } |
7e7d56d9 | 2549 | bs = blk_bs(blk); |
3e85c6fd | 2550 | |
3e85c6fd | 2551 | if (out_basefmt != NULL) { |
644483d9 | 2552 | if (bdrv_find_format(out_basefmt) == NULL) { |
15654a6d | 2553 | error_report("Invalid format name: '%s'", out_basefmt); |
c2abccec MK |
2554 | ret = -1; |
2555 | goto out; | |
3e85c6fd KW |
2556 | } |
2557 | } | |
2558 | ||
2559 | /* For safe rebasing we need to compare old and new backing file */ | |
40ed35a3 | 2560 | if (!unsafe) { |
9a29e18f | 2561 | char backing_name[PATH_MAX]; |
644483d9 HR |
2562 | QDict *options = NULL; |
2563 | ||
2564 | if (bs->backing_format[0] != '\0') { | |
2565 | options = qdict_new(); | |
2566 | qdict_put(options, "driver", qstring_from_str(bs->backing_format)); | |
2567 | } | |
3e85c6fd | 2568 | |
3e85c6fd | 2569 | bdrv_get_backing_filename(bs, backing_name, sizeof(backing_name)); |
644483d9 HR |
2570 | blk_old_backing = blk_new_open("old_backing", backing_name, NULL, |
2571 | options, src_flags, &local_err); | |
2572 | if (!blk_old_backing) { | |
34b5d2c6 HR |
2573 | error_report("Could not open old backing file '%s': %s", |
2574 | backing_name, error_get_pretty(local_err)); | |
2575 | error_free(local_err); | |
c2abccec | 2576 | goto out; |
3e85c6fd | 2577 | } |
644483d9 | 2578 | |
a616673d | 2579 | if (out_baseimg[0]) { |
644483d9 HR |
2580 | if (out_basefmt) { |
2581 | options = qdict_new(); | |
2582 | qdict_put(options, "driver", qstring_from_str(out_basefmt)); | |
2583 | } else { | |
2584 | options = NULL; | |
2585 | } | |
2586 | ||
2587 | blk_new_backing = blk_new_open("new_backing", out_baseimg, NULL, | |
2588 | options, src_flags, &local_err); | |
2589 | if (!blk_new_backing) { | |
34b5d2c6 HR |
2590 | error_report("Could not open new backing file '%s': %s", |
2591 | out_baseimg, error_get_pretty(local_err)); | |
2592 | error_free(local_err); | |
a616673d AB |
2593 | goto out; |
2594 | } | |
3e85c6fd KW |
2595 | } |
2596 | } | |
2597 | ||
2598 | /* | |
2599 | * Check each unallocated cluster in the COW file. If it is unallocated, | |
2600 | * accesses go to the backing file. We must therefore compare this cluster | |
2601 | * in the old and new backing file, and if they differ we need to copy it | |
2602 | * from the old backing file into the COW file. | |
2603 | * | |
2604 | * If qemu-img crashes during this step, no harm is done. The content of | |
2605 | * the image is the same as the original one at any time. | |
2606 | */ | |
2607 | if (!unsafe) { | |
52bf1e72 MA |
2608 | int64_t num_sectors; |
2609 | int64_t old_backing_num_sectors; | |
2610 | int64_t new_backing_num_sectors = 0; | |
3e85c6fd | 2611 | uint64_t sector; |
cc60e327 | 2612 | int n; |
d6771bfa T |
2613 | uint8_t * buf_old; |
2614 | uint8_t * buf_new; | |
1f710495 | 2615 | float local_progress = 0; |
d6771bfa | 2616 | |
f1d3cd79 HR |
2617 | buf_old = blk_blockalign(blk, IO_BUF_SIZE); |
2618 | buf_new = blk_blockalign(blk, IO_BUF_SIZE); | |
3e85c6fd | 2619 | |
f1d3cd79 | 2620 | num_sectors = blk_nb_sectors(blk); |
52bf1e72 MA |
2621 | if (num_sectors < 0) { |
2622 | error_report("Could not get size of '%s': %s", | |
2623 | filename, strerror(-num_sectors)); | |
2624 | ret = -1; | |
2625 | goto out; | |
2626 | } | |
f1d3cd79 | 2627 | old_backing_num_sectors = blk_nb_sectors(blk_old_backing); |
52bf1e72 | 2628 | if (old_backing_num_sectors < 0) { |
9a29e18f | 2629 | char backing_name[PATH_MAX]; |
52bf1e72 MA |
2630 | |
2631 | bdrv_get_backing_filename(bs, backing_name, sizeof(backing_name)); | |
2632 | error_report("Could not get size of '%s': %s", | |
2633 | backing_name, strerror(-old_backing_num_sectors)); | |
2634 | ret = -1; | |
2635 | goto out; | |
2636 | } | |
f1d3cd79 HR |
2637 | if (blk_new_backing) { |
2638 | new_backing_num_sectors = blk_nb_sectors(blk_new_backing); | |
52bf1e72 MA |
2639 | if (new_backing_num_sectors < 0) { |
2640 | error_report("Could not get size of '%s': %s", | |
2641 | out_baseimg, strerror(-new_backing_num_sectors)); | |
2642 | ret = -1; | |
2643 | goto out; | |
2644 | } | |
a616673d | 2645 | } |
3e85c6fd | 2646 | |
1f710495 KW |
2647 | if (num_sectors != 0) { |
2648 | local_progress = (float)100 / | |
2649 | (num_sectors / MIN(num_sectors, IO_BUF_SIZE / 512)); | |
2650 | } | |
2651 | ||
3e85c6fd KW |
2652 | for (sector = 0; sector < num_sectors; sector += n) { |
2653 | ||
2654 | /* How many sectors can we handle with the next read? */ | |
2655 | if (sector + (IO_BUF_SIZE / 512) <= num_sectors) { | |
2656 | n = (IO_BUF_SIZE / 512); | |
2657 | } else { | |
2658 | n = num_sectors - sector; | |
2659 | } | |
2660 | ||
2661 | /* If the cluster is allocated, we don't need to take action */ | |
cc60e327 | 2662 | ret = bdrv_is_allocated(bs, sector, n, &n); |
d663640c PB |
2663 | if (ret < 0) { |
2664 | error_report("error while reading image metadata: %s", | |
2665 | strerror(-ret)); | |
2666 | goto out; | |
2667 | } | |
cc60e327 | 2668 | if (ret) { |
3e85c6fd KW |
2669 | continue; |
2670 | } | |
2671 | ||
87a1b3e3 KW |
2672 | /* |
2673 | * Read old and new backing file and take into consideration that | |
2674 | * backing files may be smaller than the COW image. | |
2675 | */ | |
2676 | if (sector >= old_backing_num_sectors) { | |
2677 | memset(buf_old, 0, n * BDRV_SECTOR_SIZE); | |
2678 | } else { | |
2679 | if (sector + n > old_backing_num_sectors) { | |
2680 | n = old_backing_num_sectors - sector; | |
2681 | } | |
2682 | ||
f1d3cd79 | 2683 | ret = blk_read(blk_old_backing, sector, buf_old, n); |
87a1b3e3 KW |
2684 | if (ret < 0) { |
2685 | error_report("error while reading from old backing file"); | |
2686 | goto out; | |
2687 | } | |
3e85c6fd | 2688 | } |
87a1b3e3 | 2689 | |
f1d3cd79 | 2690 | if (sector >= new_backing_num_sectors || !blk_new_backing) { |
87a1b3e3 KW |
2691 | memset(buf_new, 0, n * BDRV_SECTOR_SIZE); |
2692 | } else { | |
2693 | if (sector + n > new_backing_num_sectors) { | |
2694 | n = new_backing_num_sectors - sector; | |
2695 | } | |
2696 | ||
f1d3cd79 | 2697 | ret = blk_read(blk_new_backing, sector, buf_new, n); |
87a1b3e3 KW |
2698 | if (ret < 0) { |
2699 | error_report("error while reading from new backing file"); | |
2700 | goto out; | |
2701 | } | |
3e85c6fd KW |
2702 | } |
2703 | ||
2704 | /* If they differ, we need to write to the COW file */ | |
2705 | uint64_t written = 0; | |
2706 | ||
2707 | while (written < n) { | |
2708 | int pnum; | |
2709 | ||
2710 | if (compare_sectors(buf_old + written * 512, | |
60b1bd4f | 2711 | buf_new + written * 512, n - written, &pnum)) |
3e85c6fd | 2712 | { |
f1d3cd79 HR |
2713 | ret = blk_write(blk, sector + written, |
2714 | buf_old + written * 512, pnum); | |
3e85c6fd | 2715 | if (ret < 0) { |
15654a6d | 2716 | error_report("Error while writing to COW image: %s", |
3e85c6fd | 2717 | strerror(-ret)); |
c2abccec | 2718 | goto out; |
3e85c6fd KW |
2719 | } |
2720 | } | |
2721 | ||
2722 | written += pnum; | |
2723 | } | |
6b837bc4 | 2724 | qemu_progress_print(local_progress, 100); |
3e85c6fd | 2725 | } |
d6771bfa | 2726 | |
bb1c0597 KW |
2727 | qemu_vfree(buf_old); |
2728 | qemu_vfree(buf_new); | |
3e85c6fd KW |
2729 | } |
2730 | ||
2731 | /* | |
2732 | * Change the backing file. All clusters that are different from the old | |
2733 | * backing file are overwritten in the COW file now, so the visible content | |
2734 | * doesn't change when we switch the backing file. | |
2735 | */ | |
a616673d AB |
2736 | if (out_baseimg && *out_baseimg) { |
2737 | ret = bdrv_change_backing_file(bs, out_baseimg, out_basefmt); | |
2738 | } else { | |
2739 | ret = bdrv_change_backing_file(bs, NULL, NULL); | |
2740 | } | |
2741 | ||
3e85c6fd | 2742 | if (ret == -ENOSPC) { |
15654a6d JS |
2743 | error_report("Could not change the backing file to '%s': No " |
2744 | "space left in the file header", out_baseimg); | |
3e85c6fd | 2745 | } else if (ret < 0) { |
15654a6d | 2746 | error_report("Could not change the backing file to '%s': %s", |
3e85c6fd KW |
2747 | out_baseimg, strerror(-ret)); |
2748 | } | |
2749 | ||
6b837bc4 | 2750 | qemu_progress_print(100, 0); |
3e85c6fd KW |
2751 | /* |
2752 | * TODO At this point it is possible to check if any clusters that are | |
2753 | * allocated in the COW file are the same in the backing file. If so, they | |
2754 | * could be dropped from the COW file. Don't do this before switching the | |
2755 | * backing file, in case of a crash this would lead to corruption. | |
2756 | */ | |
c2abccec | 2757 | out: |
6b837bc4 | 2758 | qemu_progress_end(); |
3e85c6fd KW |
2759 | /* Cleanup */ |
2760 | if (!unsafe) { | |
26f54e9a | 2761 | blk_unref(blk_old_backing); |
26f54e9a | 2762 | blk_unref(blk_new_backing); |
3e85c6fd KW |
2763 | } |
2764 | ||
26f54e9a | 2765 | blk_unref(blk); |
c2abccec MK |
2766 | if (ret) { |
2767 | return 1; | |
2768 | } | |
3e85c6fd KW |
2769 | return 0; |
2770 | } | |
2771 | ||
ae6b0ed6 SH |
2772 | static int img_resize(int argc, char **argv) |
2773 | { | |
6750e795 | 2774 | Error *err = NULL; |
ae6b0ed6 SH |
2775 | int c, ret, relative; |
2776 | const char *filename, *fmt, *size; | |
2777 | int64_t n, total_size; | |
f382d43a | 2778 | bool quiet = false; |
26f54e9a | 2779 | BlockBackend *blk = NULL; |
20caf0f7 DXW |
2780 | QemuOpts *param; |
2781 | static QemuOptsList resize_options = { | |
2782 | .name = "resize_options", | |
2783 | .head = QTAILQ_HEAD_INITIALIZER(resize_options.head), | |
2784 | .desc = { | |
2785 | { | |
2786 | .name = BLOCK_OPT_SIZE, | |
2787 | .type = QEMU_OPT_SIZE, | |
2788 | .help = "Virtual disk size" | |
2789 | }, { | |
2790 | /* end of list */ | |
2791 | } | |
ae6b0ed6 | 2792 | }, |
ae6b0ed6 SH |
2793 | }; |
2794 | ||
e80fec7f KW |
2795 | /* Remove size from argv manually so that negative numbers are not treated |
2796 | * as options by getopt. */ | |
2797 | if (argc < 3) { | |
ac1307ab | 2798 | error_exit("Not enough arguments"); |
e80fec7f KW |
2799 | return 1; |
2800 | } | |
2801 | ||
2802 | size = argv[--argc]; | |
2803 | ||
2804 | /* Parse getopt arguments */ | |
ae6b0ed6 SH |
2805 | fmt = NULL; |
2806 | for(;;) { | |
f382d43a | 2807 | c = getopt(argc, argv, "f:hq"); |
ae6b0ed6 SH |
2808 | if (c == -1) { |
2809 | break; | |
2810 | } | |
2811 | switch(c) { | |
ef87394c | 2812 | case '?': |
ae6b0ed6 SH |
2813 | case 'h': |
2814 | help(); | |
2815 | break; | |
2816 | case 'f': | |
2817 | fmt = optarg; | |
2818 | break; | |
f382d43a MR |
2819 | case 'q': |
2820 | quiet = true; | |
2821 | break; | |
ae6b0ed6 SH |
2822 | } |
2823 | } | |
fc11eb26 | 2824 | if (optind != argc - 1) { |
ac1307ab | 2825 | error_exit("Expecting one image file name"); |
ae6b0ed6 SH |
2826 | } |
2827 | filename = argv[optind++]; | |
ae6b0ed6 SH |
2828 | |
2829 | /* Choose grow, shrink, or absolute resize mode */ | |
2830 | switch (size[0]) { | |
2831 | case '+': | |
2832 | relative = 1; | |
2833 | size++; | |
2834 | break; | |
2835 | case '-': | |
2836 | relative = -1; | |
2837 | size++; | |
2838 | break; | |
2839 | default: | |
2840 | relative = 0; | |
2841 | break; | |
2842 | } | |
2843 | ||
2844 | /* Parse size */ | |
87ea75d5 | 2845 | param = qemu_opts_create(&resize_options, NULL, 0, &error_abort); |
f43e47db | 2846 | qemu_opt_set(param, BLOCK_OPT_SIZE, size, &err); |
6750e795 MA |
2847 | if (err) { |
2848 | error_report_err(err); | |
2a81998a | 2849 | ret = -1; |
20caf0f7 | 2850 | qemu_opts_del(param); |
2a81998a | 2851 | goto out; |
ae6b0ed6 | 2852 | } |
20caf0f7 DXW |
2853 | n = qemu_opt_get_size(param, BLOCK_OPT_SIZE, 0); |
2854 | qemu_opts_del(param); | |
ae6b0ed6 | 2855 | |
7e7d56d9 MA |
2856 | blk = img_open("image", filename, fmt, BDRV_O_FLAGS | BDRV_O_RDWR, |
2857 | true, quiet); | |
2858 | if (!blk) { | |
2a81998a JS |
2859 | ret = -1; |
2860 | goto out; | |
c2abccec | 2861 | } |
ae6b0ed6 SH |
2862 | |
2863 | if (relative) { | |
f1d3cd79 | 2864 | total_size = blk_getlength(blk) + n * relative; |
ae6b0ed6 SH |
2865 | } else { |
2866 | total_size = n; | |
2867 | } | |
2868 | if (total_size <= 0) { | |
15654a6d | 2869 | error_report("New image size must be positive"); |
c2abccec MK |
2870 | ret = -1; |
2871 | goto out; | |
ae6b0ed6 SH |
2872 | } |
2873 | ||
f1d3cd79 | 2874 | ret = blk_truncate(blk, total_size); |
ae6b0ed6 SH |
2875 | switch (ret) { |
2876 | case 0: | |
f382d43a | 2877 | qprintf(quiet, "Image resized.\n"); |
ae6b0ed6 SH |
2878 | break; |
2879 | case -ENOTSUP: | |
259b2173 | 2880 | error_report("This image does not support resize"); |
ae6b0ed6 SH |
2881 | break; |
2882 | case -EACCES: | |
15654a6d | 2883 | error_report("Image is read-only"); |
ae6b0ed6 SH |
2884 | break; |
2885 | default: | |
15654a6d | 2886 | error_report("Error resizing image (%d)", -ret); |
ae6b0ed6 SH |
2887 | break; |
2888 | } | |
c2abccec | 2889 | out: |
26f54e9a | 2890 | blk_unref(blk); |
c2abccec MK |
2891 | if (ret) { |
2892 | return 1; | |
2893 | } | |
ae6b0ed6 SH |
2894 | return 0; |
2895 | } | |
2896 | ||
76a3a34d HR |
2897 | static void amend_status_cb(BlockDriverState *bs, |
2898 | int64_t offset, int64_t total_work_size) | |
2899 | { | |
2900 | qemu_progress_print(100.f * offset / total_work_size, 0); | |
2901 | } | |
2902 | ||
6f176b48 HR |
2903 | static int img_amend(int argc, char **argv) |
2904 | { | |
dc523cd3 | 2905 | Error *err = NULL; |
6f176b48 HR |
2906 | int c, ret = 0; |
2907 | char *options = NULL; | |
83d0521a CL |
2908 | QemuOptsList *create_opts = NULL; |
2909 | QemuOpts *opts = NULL; | |
bd39e6ed HR |
2910 | const char *fmt = NULL, *filename, *cache; |
2911 | int flags; | |
76a3a34d | 2912 | bool quiet = false, progress = false; |
26f54e9a | 2913 | BlockBackend *blk = NULL; |
6f176b48 HR |
2914 | BlockDriverState *bs = NULL; |
2915 | ||
bd39e6ed | 2916 | cache = BDRV_DEFAULT_CACHE; |
6f176b48 | 2917 | for (;;) { |
76a3a34d | 2918 | c = getopt(argc, argv, "ho:f:t:pq"); |
6f176b48 HR |
2919 | if (c == -1) { |
2920 | break; | |
2921 | } | |
2922 | ||
2923 | switch (c) { | |
2924 | case 'h': | |
2925 | case '?': | |
2926 | help(); | |
2927 | break; | |
2928 | case 'o': | |
626f84f3 KW |
2929 | if (!is_valid_option_list(optarg)) { |
2930 | error_report("Invalid option list: %s", optarg); | |
2931 | ret = -1; | |
2932 | goto out; | |
2933 | } | |
2934 | if (!options) { | |
2935 | options = g_strdup(optarg); | |
2936 | } else { | |
2937 | char *old_options = options; | |
2938 | options = g_strdup_printf("%s,%s", options, optarg); | |
2939 | g_free(old_options); | |
2940 | } | |
6f176b48 HR |
2941 | break; |
2942 | case 'f': | |
2943 | fmt = optarg; | |
2944 | break; | |
bd39e6ed HR |
2945 | case 't': |
2946 | cache = optarg; | |
2947 | break; | |
76a3a34d HR |
2948 | case 'p': |
2949 | progress = true; | |
2950 | break; | |
6f176b48 HR |
2951 | case 'q': |
2952 | quiet = true; | |
2953 | break; | |
2954 | } | |
2955 | } | |
2956 | ||
a283cb6e | 2957 | if (!options) { |
ac1307ab | 2958 | error_exit("Must specify options (-o)"); |
6f176b48 HR |
2959 | } |
2960 | ||
76a3a34d HR |
2961 | if (quiet) { |
2962 | progress = false; | |
2963 | } | |
2964 | qemu_progress_init(progress, 1.0); | |
2965 | ||
a283cb6e KW |
2966 | filename = (optind == argc - 1) ? argv[argc - 1] : NULL; |
2967 | if (fmt && has_help_option(options)) { | |
2968 | /* If a format is explicitly specified (and possibly no filename is | |
2969 | * given), print option help here */ | |
2970 | ret = print_block_option_help(filename, fmt); | |
2971 | goto out; | |
6f176b48 HR |
2972 | } |
2973 | ||
a283cb6e | 2974 | if (optind != argc - 1) { |
b2f27e44 HR |
2975 | error_report("Expecting one image file name"); |
2976 | ret = -1; | |
2977 | goto out; | |
a283cb6e | 2978 | } |
6f176b48 | 2979 | |
bd39e6ed HR |
2980 | flags = BDRV_O_FLAGS | BDRV_O_RDWR; |
2981 | ret = bdrv_parse_cache_flags(cache, &flags); | |
2982 | if (ret < 0) { | |
2983 | error_report("Invalid cache option: %s", cache); | |
2984 | goto out; | |
2985 | } | |
2986 | ||
7e7d56d9 MA |
2987 | blk = img_open("image", filename, fmt, flags, true, quiet); |
2988 | if (!blk) { | |
6f176b48 HR |
2989 | ret = -1; |
2990 | goto out; | |
2991 | } | |
7e7d56d9 | 2992 | bs = blk_bs(blk); |
6f176b48 HR |
2993 | |
2994 | fmt = bs->drv->format_name; | |
2995 | ||
626f84f3 | 2996 | if (has_help_option(options)) { |
a283cb6e | 2997 | /* If the format was auto-detected, print option help here */ |
6f176b48 HR |
2998 | ret = print_block_option_help(filename, fmt); |
2999 | goto out; | |
3000 | } | |
3001 | ||
b2439d26 HR |
3002 | if (!bs->drv->create_opts) { |
3003 | error_report("Format driver '%s' does not support any options to amend", | |
3004 | fmt); | |
3005 | ret = -1; | |
3006 | goto out; | |
3007 | } | |
3008 | ||
c282e1fd | 3009 | create_opts = qemu_opts_append(create_opts, bs->drv->create_opts); |
83d0521a | 3010 | opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); |
dc523cd3 MA |
3011 | if (options) { |
3012 | qemu_opts_do_parse(opts, options, NULL, &err); | |
3013 | if (err) { | |
97a2ca7a | 3014 | error_report_err(err); |
dc523cd3 MA |
3015 | ret = -1; |
3016 | goto out; | |
3017 | } | |
6f176b48 HR |
3018 | } |
3019 | ||
76a3a34d HR |
3020 | /* In case the driver does not call amend_status_cb() */ |
3021 | qemu_progress_print(0.f, 0); | |
3022 | ret = bdrv_amend_options(bs, opts, &amend_status_cb); | |
3023 | qemu_progress_print(100.f, 0); | |
6f176b48 HR |
3024 | if (ret < 0) { |
3025 | error_report("Error while amending options: %s", strerror(-ret)); | |
3026 | goto out; | |
3027 | } | |
3028 | ||
3029 | out: | |
76a3a34d HR |
3030 | qemu_progress_end(); |
3031 | ||
26f54e9a | 3032 | blk_unref(blk); |
83d0521a CL |
3033 | qemu_opts_del(opts); |
3034 | qemu_opts_free(create_opts); | |
626f84f3 KW |
3035 | g_free(options); |
3036 | ||
6f176b48 HR |
3037 | if (ret) { |
3038 | return 1; | |
3039 | } | |
3040 | return 0; | |
3041 | } | |
3042 | ||
c227f099 | 3043 | static const img_cmd_t img_cmds[] = { |
153859be SB |
3044 | #define DEF(option, callback, arg_string) \ |
3045 | { option, callback }, | |
3046 | #include "qemu-img-cmds.h" | |
3047 | #undef DEF | |
3048 | #undef GEN_DOCS | |
3049 | { NULL, NULL, }, | |
3050 | }; | |
3051 | ||
ea2384d3 FB |
3052 | int main(int argc, char **argv) |
3053 | { | |
c227f099 | 3054 | const img_cmd_t *cmd; |
153859be | 3055 | const char *cmdname; |
2f78e491 | 3056 | Error *local_error = NULL; |
7db1689c | 3057 | int c; |
7db1689c JC |
3058 | static const struct option long_options[] = { |
3059 | {"help", no_argument, 0, 'h'}, | |
5f6979cb | 3060 | {"version", no_argument, 0, 'v'}, |
7db1689c JC |
3061 | {0, 0, 0, 0} |
3062 | }; | |
ea2384d3 | 3063 | |
526eda14 MK |
3064 | #ifdef CONFIG_POSIX |
3065 | signal(SIGPIPE, SIG_IGN); | |
3066 | #endif | |
3067 | ||
53f76e58 | 3068 | error_set_progname(argv[0]); |
10f5bff6 | 3069 | qemu_init_exec_dir(argv[0]); |
53f76e58 | 3070 | |
2f78e491 | 3071 | if (qemu_init_main_loop(&local_error)) { |
565f65d2 | 3072 | error_report_err(local_error); |
2f78e491 CN |
3073 | exit(EXIT_FAILURE); |
3074 | } | |
3075 | ||
ea2384d3 | 3076 | bdrv_init(); |
ac1307ab FZ |
3077 | if (argc < 2) { |
3078 | error_exit("Not enough arguments"); | |
3079 | } | |
153859be | 3080 | cmdname = argv[1]; |
153859be SB |
3081 | |
3082 | /* find the command */ | |
5f6979cb | 3083 | for (cmd = img_cmds; cmd->name != NULL; cmd++) { |
153859be | 3084 | if (!strcmp(cmdname, cmd->name)) { |
7db1689c | 3085 | return cmd->handler(argc - 1, argv + 1); |
153859be | 3086 | } |
ea2384d3 | 3087 | } |
153859be | 3088 | |
5f6979cb | 3089 | c = getopt_long(argc, argv, "h", long_options, NULL); |
7db1689c JC |
3090 | |
3091 | if (c == 'h') { | |
3092 | help(); | |
3093 | } | |
5f6979cb JC |
3094 | if (c == 'v') { |
3095 | printf(QEMU_IMG_VERSION); | |
3096 | return 0; | |
3097 | } | |
7db1689c | 3098 | |
153859be | 3099 | /* not found */ |
ac1307ab | 3100 | error_exit("Command not found: %s", cmdname); |
ea2384d3 | 3101 | } |