Commit | Line | Data |
---|---|---|
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 | */ | |
80c71a24 | 24 | #include "qemu/osdep.h" |
da34e65c | 25 | #include "qapi/error.h" |
c054b3fd BC |
26 | #include "qapi-visit.h" |
27 | #include "qapi/qmp-output-visitor.h" | |
cc7a8ea7 | 28 | #include "qapi/qmp/qerror.h" |
7b1b5d19 | 29 | #include "qapi/qmp/qjson.h" |
f348b6d1 | 30 | #include "qemu/cutils.h" |
3babeb15 | 31 | #include "qemu/config-file.h" |
1de7afc9 PB |
32 | #include "qemu/option.h" |
33 | #include "qemu/error-report.h" | |
3babeb15 | 34 | #include "qom/object_interfaces.h" |
9c17d615 | 35 | #include "sysemu/sysemu.h" |
26f54e9a | 36 | #include "sysemu/block-backend.h" |
737e150e | 37 | #include "block/block_int.h" |
d4a3238a | 38 | #include "block/blockjob.h" |
f364ec65 | 39 | #include "block/qapi.h" |
c2297088 | 40 | #include "crypto/init.h" |
c054b3fd | 41 | #include <getopt.h> |
e8445331 | 42 | |
61979a6a | 43 | #define QEMU_IMG_VERSION "qemu-img version " QEMU_VERSION QEMU_PKGVERSION \ |
5f6979cb JC |
44 | ", Copyright (c) 2004-2008 Fabrice Bellard\n" |
45 | ||
c227f099 | 46 | typedef struct img_cmd_t { |
153859be SB |
47 | const char *name; |
48 | int (*handler)(int argc, char **argv); | |
c227f099 | 49 | } img_cmd_t; |
153859be | 50 | |
8599ea4c FS |
51 | enum { |
52 | OPTION_OUTPUT = 256, | |
53 | OPTION_BACKING_CHAIN = 257, | |
3babeb15 | 54 | OPTION_OBJECT = 258, |
eb769f74 | 55 | OPTION_IMAGE_OPTS = 259, |
b6495fa8 | 56 | OPTION_PATTERN = 260, |
8599ea4c FS |
57 | }; |
58 | ||
59 | typedef enum OutputFormat { | |
60 | OFORMAT_JSON, | |
61 | OFORMAT_HUMAN, | |
62 | } OutputFormat; | |
63 | ||
e6996143 | 64 | /* Default to cache=writeback as data integrity is not important for qemu-img */ |
661a0f71 | 65 | #define BDRV_DEFAULT_CACHE "writeback" |
137519ce | 66 | |
00c6d403 | 67 | static void format_print(void *opaque, const char *name) |
ea2384d3 | 68 | { |
00c6d403 | 69 | printf(" %s", name); |
ea2384d3 FB |
70 | } |
71 | ||
ac1307ab FZ |
72 | static void QEMU_NORETURN GCC_FMT_ATTR(1, 2) error_exit(const char *fmt, ...) |
73 | { | |
74 | va_list ap; | |
75 | ||
76 | error_printf("qemu-img: "); | |
77 | ||
78 | va_start(ap, fmt); | |
79 | error_vprintf(fmt, ap); | |
80 | va_end(ap); | |
81 | ||
82 | error_printf("\nTry 'qemu-img --help' for more information\n"); | |
83 | exit(EXIT_FAILURE); | |
84 | } | |
85 | ||
d2c639d6 | 86 | /* Please keep in synch with qemu-img.texi */ |
ac1307ab | 87 | static void QEMU_NORETURN help(void) |
ea2384d3 | 88 | { |
e00291c0 | 89 | const char *help_msg = |
5f6979cb | 90 | QEMU_IMG_VERSION |
3f020d70 | 91 | "usage: qemu-img command [command options]\n" |
92 | "QEMU disk image utility\n" | |
93 | "\n" | |
94 | "Command syntax:\n" | |
153859be SB |
95 | #define DEF(option, callback, arg_string) \ |
96 | " " arg_string "\n" | |
97 | #include "qemu-img-cmds.h" | |
98 | #undef DEF | |
99 | #undef GEN_DOCS | |
3f020d70 | 100 | "\n" |
101 | "Command parameters:\n" | |
102 | " 'filename' is a disk image filename\n" | |
3babeb15 DB |
103 | " 'objectdef' is a QEMU user creatable object definition. See the qemu(1)\n" |
104 | " manual page for a description of the object properties. The most common\n" | |
105 | " object type is a 'secret', which is used to supply passwords and/or\n" | |
106 | " encryption keys.\n" | |
3f020d70 | 107 | " 'fmt' is the disk image format. It is guessed automatically in most cases\n" |
661a0f71 | 108 | " 'cache' is the cache mode used to write the output disk image, the valid\n" |
80ccf93b LY |
109 | " options are: 'none', 'writeback' (default, except for convert), 'writethrough',\n" |
110 | " 'directsync' and 'unsafe' (default for convert)\n" | |
bb87fdf8 SH |
111 | " 'src_cache' is the cache mode used to read input disk images, the valid\n" |
112 | " options are the same as for the 'cache' option\n" | |
3f020d70 | 113 | " 'size' is the disk image size in bytes. Optional suffixes\n" |
5e00984a KW |
114 | " 'k' or 'K' (kilobyte, 1024), 'M' (megabyte, 1024k), 'G' (gigabyte, 1024M),\n" |
115 | " 'T' (terabyte, 1024G), 'P' (petabyte, 1024T) and 'E' (exabyte, 1024P) are\n" | |
116 | " supported. 'b' is ignored.\n" | |
3f020d70 | 117 | " 'output_filename' is the destination disk image filename\n" |
118 | " 'output_fmt' is the destination format\n" | |
119 | " 'options' is a comma separated list of format specific options in a\n" | |
120 | " name=value format. Use -o ? for an overview of the options supported by the\n" | |
121 | " used format\n" | |
ef80654d WX |
122 | " 'snapshot_param' is param used for internal snapshot, format\n" |
123 | " is 'snapshot.id=[ID],snapshot.name=[NAME]', or\n" | |
124 | " '[ID_OR_NAME]'\n" | |
125 | " 'snapshot_id_or_name' is deprecated, use 'snapshot_param'\n" | |
126 | " instead\n" | |
3f020d70 | 127 | " '-c' indicates that target image must be compressed (qcow format only)\n" |
128 | " '-u' enables unsafe rebasing. It is assumed that old and new backing file\n" | |
129 | " match exactly. The image doesn't need a working backing file before\n" | |
130 | " rebasing in this case (useful for renaming the backing file)\n" | |
131 | " '-h' with or without a command shows this help and lists the supported formats\n" | |
6b837bc4 | 132 | " '-p' show progress of command (only certain commands)\n" |
f382d43a | 133 | " '-q' use Quiet mode - do not print any output (except errors)\n" |
11b6699a PL |
134 | " '-S' indicates the consecutive number of bytes (defaults to 4k) that must\n" |
135 | " contain only zeros for qemu-img to create a sparse image during\n" | |
136 | " conversion. If the number of bytes is 0, the source will not be scanned for\n" | |
137 | " unallocated or zero sectors, and the destination image will always be\n" | |
138 | " fully allocated\n" | |
c054b3fd | 139 | " '--output' takes the format in which the output must be done (human or json)\n" |
b2e10493 AD |
140 | " '-n' skips the target volume creation (useful if the volume is created\n" |
141 | " prior to running qemu-img)\n" | |
3f020d70 | 142 | "\n" |
4534ff54 KW |
143 | "Parameters to check subcommand:\n" |
144 | " '-r' tries to repair any inconsistencies that are found during the check.\n" | |
145 | " '-r leaks' repairs only cluster leaks, whereas '-r all' fixes all\n" | |
146 | " kinds of errors, with a higher risk of choosing the wrong fix or\n" | |
0546b8c2 | 147 | " hiding corruption that has already occurred.\n" |
4534ff54 | 148 | "\n" |
3f020d70 | 149 | "Parameters to snapshot subcommand:\n" |
150 | " 'snapshot' is the name of the snapshot to create, apply or delete\n" | |
151 | " '-a' applies a snapshot (revert disk to saved state)\n" | |
152 | " '-c' creates a snapshot\n" | |
153 | " '-d' deletes a snapshot\n" | |
d14ed18c MR |
154 | " '-l' lists all snapshots in the given image\n" |
155 | "\n" | |
156 | "Parameters to compare subcommand:\n" | |
157 | " '-f' first image format\n" | |
158 | " '-F' second image format\n" | |
159 | " '-s' run in Strict mode - fail on different image size or sector allocation\n"; | |
e00291c0 PB |
160 | |
161 | printf("%s\nSupported formats:", help_msg); | |
00c6d403 | 162 | bdrv_iterate_format(format_print, NULL); |
ea2384d3 | 163 | printf("\n"); |
ac1307ab | 164 | exit(EXIT_SUCCESS); |
ea2384d3 FB |
165 | } |
166 | ||
3babeb15 DB |
167 | static QemuOptsList qemu_object_opts = { |
168 | .name = "object", | |
169 | .implied_opt_name = "qom-type", | |
170 | .head = QTAILQ_HEAD_INITIALIZER(qemu_object_opts.head), | |
171 | .desc = { | |
172 | { } | |
173 | }, | |
174 | }; | |
175 | ||
eb769f74 DB |
176 | static QemuOptsList qemu_source_opts = { |
177 | .name = "source", | |
178 | .implied_opt_name = "file", | |
179 | .head = QTAILQ_HEAD_INITIALIZER(qemu_source_opts.head), | |
180 | .desc = { | |
181 | { } | |
182 | }, | |
183 | }; | |
184 | ||
7c30f657 | 185 | static int GCC_FMT_ATTR(2, 3) qprintf(bool quiet, const char *fmt, ...) |
f382d43a MR |
186 | { |
187 | int ret = 0; | |
188 | if (!quiet) { | |
189 | va_list args; | |
190 | va_start(args, fmt); | |
191 | ret = vprintf(fmt, args); | |
192 | va_end(args); | |
193 | } | |
194 | return ret; | |
195 | } | |
196 | ||
ea2384d3 | 197 | |
4ac8aacd JS |
198 | static int print_block_option_help(const char *filename, const char *fmt) |
199 | { | |
200 | BlockDriver *drv, *proto_drv; | |
83d0521a | 201 | QemuOptsList *create_opts = NULL; |
b65a5e12 | 202 | Error *local_err = NULL; |
4ac8aacd JS |
203 | |
204 | /* Find driver and parse its options */ | |
205 | drv = bdrv_find_format(fmt); | |
206 | if (!drv) { | |
15654a6d | 207 | error_report("Unknown file format '%s'", fmt); |
4ac8aacd JS |
208 | return 1; |
209 | } | |
210 | ||
c282e1fd | 211 | create_opts = qemu_opts_append(create_opts, drv->create_opts); |
a283cb6e | 212 | if (filename) { |
b65a5e12 | 213 | proto_drv = bdrv_find_protocol(filename, true, &local_err); |
a283cb6e | 214 | if (!proto_drv) { |
2867ce4a | 215 | error_report_err(local_err); |
83d0521a | 216 | qemu_opts_free(create_opts); |
a283cb6e KW |
217 | return 1; |
218 | } | |
c282e1fd | 219 | create_opts = qemu_opts_append(create_opts, proto_drv->create_opts); |
a283cb6e KW |
220 | } |
221 | ||
83d0521a CL |
222 | qemu_opts_print_help(create_opts); |
223 | qemu_opts_free(create_opts); | |
4ac8aacd JS |
224 | return 0; |
225 | } | |
226 | ||
eb769f74 DB |
227 | |
228 | static int img_open_password(BlockBackend *blk, const char *filename, | |
abb06c5a | 229 | int flags, bool quiet) |
75c23805 FB |
230 | { |
231 | BlockDriverState *bs; | |
75c23805 | 232 | char password[256]; |
eb769f74 DB |
233 | |
234 | bs = blk_bs(blk); | |
4ef130fc DB |
235 | if (bdrv_is_encrypted(bs) && bdrv_key_required(bs) && |
236 | !(flags & BDRV_O_NO_IO)) { | |
eb769f74 DB |
237 | qprintf(quiet, "Disk image '%s' is encrypted.\n", filename); |
238 | if (qemu_read_password(password, sizeof(password)) < 0) { | |
239 | error_report("No password given"); | |
240 | return -1; | |
241 | } | |
242 | if (bdrv_set_key(bs, password) < 0) { | |
243 | error_report("invalid password"); | |
244 | return -1; | |
245 | } | |
246 | } | |
247 | return 0; | |
248 | } | |
249 | ||
250 | ||
efaa7c4e | 251 | static BlockBackend *img_open_opts(const char *optstr, |
ce099547 | 252 | QemuOpts *opts, int flags, bool writethrough, |
abb06c5a | 253 | bool quiet) |
eb769f74 DB |
254 | { |
255 | QDict *options; | |
256 | Error *local_err = NULL; | |
257 | BlockBackend *blk; | |
258 | options = qemu_opts_to_qdict(opts, NULL); | |
efaa7c4e | 259 | blk = blk_new_open(NULL, NULL, options, flags, &local_err); |
eb769f74 | 260 | if (!blk) { |
143605a2 | 261 | error_reportf_err(local_err, "Could not open '%s': ", optstr); |
eb769f74 DB |
262 | return NULL; |
263 | } | |
ce099547 | 264 | blk_set_enable_write_cache(blk, !writethrough); |
eb769f74 | 265 | |
abb06c5a | 266 | if (img_open_password(blk, optstr, flags, quiet) < 0) { |
eb769f74 DB |
267 | blk_unref(blk); |
268 | return NULL; | |
269 | } | |
270 | return blk; | |
271 | } | |
272 | ||
efaa7c4e | 273 | static BlockBackend *img_open_file(const char *filename, |
eb769f74 | 274 | const char *fmt, int flags, |
ce099547 | 275 | bool writethrough, bool quiet) |
eb769f74 DB |
276 | { |
277 | BlockBackend *blk; | |
34b5d2c6 | 278 | Error *local_err = NULL; |
5bd31326 | 279 | QDict *options = NULL; |
ad717139 | 280 | |
75c23805 | 281 | if (fmt) { |
5bd31326 HR |
282 | options = qdict_new(); |
283 | qdict_put(options, "driver", qstring_from_str(fmt)); | |
75c23805 | 284 | } |
b9eaf9ec | 285 | |
efaa7c4e | 286 | blk = blk_new_open(filename, NULL, options, flags, &local_err); |
5bd31326 | 287 | if (!blk) { |
c29b77f9 | 288 | error_reportf_err(local_err, "Could not open '%s': ", filename); |
eb769f74 | 289 | return NULL; |
75c23805 | 290 | } |
ce099547 | 291 | blk_set_enable_write_cache(blk, !writethrough); |
b9eaf9ec | 292 | |
abb06c5a | 293 | if (img_open_password(blk, filename, flags, quiet) < 0) { |
eb769f74 DB |
294 | blk_unref(blk); |
295 | return NULL; | |
296 | } | |
297 | return blk; | |
298 | } | |
299 | ||
300 | ||
efaa7c4e | 301 | static BlockBackend *img_open(bool image_opts, |
eb769f74 | 302 | const char *filename, |
ce099547 | 303 | const char *fmt, int flags, bool writethrough, |
abb06c5a | 304 | bool quiet) |
eb769f74 DB |
305 | { |
306 | BlockBackend *blk; | |
307 | if (image_opts) { | |
308 | QemuOpts *opts; | |
309 | if (fmt) { | |
310 | error_report("--image-opts and --format are mutually exclusive"); | |
311 | return NULL; | |
312 | } | |
313 | opts = qemu_opts_parse_noisily(qemu_find_opts("source"), | |
314 | filename, true); | |
315 | if (!opts) { | |
316 | return NULL; | |
317 | } | |
ce099547 | 318 | blk = img_open_opts(filename, opts, flags, writethrough, quiet); |
eb769f74 | 319 | } else { |
ce099547 | 320 | blk = img_open_file(filename, fmt, flags, writethrough, quiet); |
75c23805 | 321 | } |
7e7d56d9 | 322 | return blk; |
75c23805 FB |
323 | } |
324 | ||
eb769f74 | 325 | |
83d0521a | 326 | static int add_old_style_options(const char *fmt, QemuOpts *opts, |
eec77d9e JS |
327 | const char *base_filename, |
328 | const char *base_fmt) | |
efa84d43 | 329 | { |
6750e795 MA |
330 | Error *err = NULL; |
331 | ||
efa84d43 | 332 | if (base_filename) { |
f43e47db | 333 | qemu_opt_set(opts, BLOCK_OPT_BACKING_FILE, base_filename, &err); |
6750e795 | 334 | if (err) { |
15654a6d JS |
335 | error_report("Backing file not supported for file format '%s'", |
336 | fmt); | |
6750e795 | 337 | error_free(err); |
c2abccec | 338 | return -1; |
efa84d43 KW |
339 | } |
340 | } | |
341 | if (base_fmt) { | |
f43e47db | 342 | qemu_opt_set(opts, BLOCK_OPT_BACKING_FMT, base_fmt, &err); |
6750e795 | 343 | if (err) { |
15654a6d JS |
344 | error_report("Backing file format not supported for file " |
345 | "format '%s'", fmt); | |
6750e795 | 346 | error_free(err); |
c2abccec | 347 | return -1; |
efa84d43 KW |
348 | } |
349 | } | |
c2abccec | 350 | return 0; |
efa84d43 KW |
351 | } |
352 | ||
ea2384d3 FB |
353 | static int img_create(int argc, char **argv) |
354 | { | |
a9300911 | 355 | int c; |
1da7cfbd | 356 | uint64_t img_size = -1; |
ea2384d3 | 357 | const char *fmt = "raw"; |
9230eaf6 | 358 | const char *base_fmt = NULL; |
ea2384d3 FB |
359 | const char *filename; |
360 | const char *base_filename = NULL; | |
9ea2ea71 | 361 | char *options = NULL; |
9b37525a | 362 | Error *local_err = NULL; |
f382d43a | 363 | bool quiet = false; |
3b46e624 | 364 | |
ea2384d3 | 365 | for(;;) { |
3babeb15 DB |
366 | static const struct option long_options[] = { |
367 | {"help", no_argument, 0, 'h'}, | |
368 | {"object", required_argument, 0, OPTION_OBJECT}, | |
369 | {0, 0, 0, 0} | |
370 | }; | |
371 | c = getopt_long(argc, argv, "F:b:f:he6o:q", | |
372 | long_options, NULL); | |
b8fb60da | 373 | if (c == -1) { |
ea2384d3 | 374 | break; |
b8fb60da | 375 | } |
ea2384d3 | 376 | switch(c) { |
ef87394c | 377 | case '?': |
ea2384d3 FB |
378 | case 'h': |
379 | help(); | |
380 | break; | |
9230eaf6 AL |
381 | case 'F': |
382 | base_fmt = optarg; | |
383 | break; | |
ea2384d3 FB |
384 | case 'b': |
385 | base_filename = optarg; | |
386 | break; | |
387 | case 'f': | |
388 | fmt = optarg; | |
389 | break; | |
390 | case 'e': | |
9d42e15d | 391 | error_report("option -e is deprecated, please use \'-o " |
eec77d9e | 392 | "encryption\' instead!"); |
77386bf6 | 393 | goto fail; |
d8871c5a | 394 | case '6': |
9d42e15d | 395 | error_report("option -6 is deprecated, please use \'-o " |
eec77d9e | 396 | "compat6\' instead!"); |
77386bf6 | 397 | goto fail; |
9ea2ea71 | 398 | case 'o': |
77386bf6 KW |
399 | if (!is_valid_option_list(optarg)) { |
400 | error_report("Invalid option list: %s", optarg); | |
401 | goto fail; | |
402 | } | |
403 | if (!options) { | |
404 | options = g_strdup(optarg); | |
405 | } else { | |
406 | char *old_options = options; | |
407 | options = g_strdup_printf("%s,%s", options, optarg); | |
408 | g_free(old_options); | |
409 | } | |
9ea2ea71 | 410 | break; |
f382d43a MR |
411 | case 'q': |
412 | quiet = true; | |
413 | break; | |
3babeb15 DB |
414 | case OPTION_OBJECT: { |
415 | QemuOpts *opts; | |
416 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
417 | optarg, true); | |
418 | if (!opts) { | |
419 | goto fail; | |
420 | } | |
421 | } break; | |
ea2384d3 FB |
422 | } |
423 | } | |
9230eaf6 | 424 | |
b50cbabc | 425 | /* Get the filename */ |
a283cb6e KW |
426 | filename = (optind < argc) ? argv[optind] : NULL; |
427 | if (options && has_help_option(options)) { | |
428 | g_free(options); | |
429 | return print_block_option_help(filename, fmt); | |
430 | } | |
431 | ||
b8fb60da | 432 | if (optind >= argc) { |
ac1307ab | 433 | error_exit("Expecting image file name"); |
b8fb60da | 434 | } |
a283cb6e | 435 | optind++; |
b50cbabc | 436 | |
3babeb15 DB |
437 | if (qemu_opts_foreach(&qemu_object_opts, |
438 | user_creatable_add_opts_foreach, | |
51b9b478 | 439 | NULL, NULL)) { |
3babeb15 DB |
440 | goto fail; |
441 | } | |
442 | ||
1da7cfbd JS |
443 | /* Get image size, if specified */ |
444 | if (optind < argc) { | |
70b4f4bb | 445 | int64_t sval; |
e36b3695 | 446 | char *end; |
4677bb40 MAL |
447 | sval = qemu_strtosz_suffix(argv[optind++], &end, |
448 | QEMU_STRTOSZ_DEFSUFFIX_B); | |
e36b3695 | 449 | if (sval < 0 || *end) { |
79443397 LG |
450 | if (sval == -ERANGE) { |
451 | error_report("Image size must be less than 8 EiB!"); | |
452 | } else { | |
453 | error_report("Invalid image size specified! You may use k, M, " | |
5e00984a KW |
454 | "G, T, P or E suffixes for "); |
455 | error_report("kilobytes, megabytes, gigabytes, terabytes, " | |
456 | "petabytes and exabytes."); | |
79443397 | 457 | } |
77386bf6 | 458 | goto fail; |
1da7cfbd JS |
459 | } |
460 | img_size = (uint64_t)sval; | |
461 | } | |
fc11eb26 | 462 | if (optind != argc) { |
ac1307ab | 463 | error_exit("Unexpected argument: %s", argv[optind]); |
fc11eb26 | 464 | } |
1da7cfbd | 465 | |
9b37525a | 466 | bdrv_img_create(filename, fmt, base_filename, base_fmt, |
61de4c68 | 467 | options, img_size, 0, &local_err, quiet); |
84d18f06 | 468 | if (local_err) { |
c29b77f9 | 469 | error_reportf_err(local_err, "%s: ", filename); |
77386bf6 | 470 | goto fail; |
c2abccec | 471 | } |
a9300911 | 472 | |
77386bf6 | 473 | g_free(options); |
ea2384d3 | 474 | return 0; |
77386bf6 KW |
475 | |
476 | fail: | |
477 | g_free(options); | |
478 | return 1; | |
ea2384d3 FB |
479 | } |
480 | ||
f382d43a | 481 | static void dump_json_image_check(ImageCheck *check, bool quiet) |
8599ea4c | 482 | { |
4399c438 | 483 | Error *local_err = NULL; |
8599ea4c FS |
484 | QString *str; |
485 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
486 | QObject *obj; | |
51e72bc1 EB |
487 | visit_type_ImageCheck(qmp_output_get_visitor(ov), NULL, &check, |
488 | &local_err); | |
8599ea4c FS |
489 | obj = qmp_output_get_qobject(ov); |
490 | str = qobject_to_json_pretty(obj); | |
491 | assert(str != NULL); | |
f382d43a | 492 | qprintf(quiet, "%s\n", qstring_get_str(str)); |
8599ea4c FS |
493 | qobject_decref(obj); |
494 | qmp_output_visitor_cleanup(ov); | |
495 | QDECREF(str); | |
496 | } | |
497 | ||
f382d43a | 498 | static void dump_human_image_check(ImageCheck *check, bool quiet) |
8599ea4c FS |
499 | { |
500 | if (!(check->corruptions || check->leaks || check->check_errors)) { | |
f382d43a | 501 | qprintf(quiet, "No errors were found on the image.\n"); |
8599ea4c FS |
502 | } else { |
503 | if (check->corruptions) { | |
f382d43a MR |
504 | qprintf(quiet, "\n%" PRId64 " errors were found on the image.\n" |
505 | "Data may be corrupted, or further writes to the image " | |
506 | "may corrupt it.\n", | |
507 | check->corruptions); | |
8599ea4c FS |
508 | } |
509 | ||
510 | if (check->leaks) { | |
f382d43a MR |
511 | qprintf(quiet, |
512 | "\n%" PRId64 " leaked clusters were found on the image.\n" | |
513 | "This means waste of disk space, but no harm to data.\n", | |
514 | check->leaks); | |
8599ea4c FS |
515 | } |
516 | ||
517 | if (check->check_errors) { | |
f382d43a MR |
518 | qprintf(quiet, |
519 | "\n%" PRId64 | |
520 | " internal errors have occurred during the check.\n", | |
521 | check->check_errors); | |
8599ea4c FS |
522 | } |
523 | } | |
524 | ||
525 | if (check->total_clusters != 0 && check->allocated_clusters != 0) { | |
f382d43a MR |
526 | qprintf(quiet, "%" PRId64 "/%" PRId64 " = %0.2f%% allocated, " |
527 | "%0.2f%% fragmented, %0.2f%% compressed clusters\n", | |
528 | check->allocated_clusters, check->total_clusters, | |
529 | check->allocated_clusters * 100.0 / check->total_clusters, | |
530 | check->fragmented_clusters * 100.0 / check->allocated_clusters, | |
531 | check->compressed_clusters * 100.0 / | |
532 | check->allocated_clusters); | |
8599ea4c FS |
533 | } |
534 | ||
535 | if (check->image_end_offset) { | |
f382d43a MR |
536 | qprintf(quiet, |
537 | "Image end offset: %" PRId64 "\n", check->image_end_offset); | |
8599ea4c FS |
538 | } |
539 | } | |
540 | ||
541 | static int collect_image_check(BlockDriverState *bs, | |
542 | ImageCheck *check, | |
543 | const char *filename, | |
544 | const char *fmt, | |
545 | int fix) | |
546 | { | |
547 | int ret; | |
548 | BdrvCheckResult result; | |
549 | ||
550 | ret = bdrv_check(bs, &result, fix); | |
551 | if (ret < 0) { | |
552 | return ret; | |
553 | } | |
554 | ||
555 | check->filename = g_strdup(filename); | |
556 | check->format = g_strdup(bdrv_get_format_name(bs)); | |
557 | check->check_errors = result.check_errors; | |
558 | check->corruptions = result.corruptions; | |
559 | check->has_corruptions = result.corruptions != 0; | |
560 | check->leaks = result.leaks; | |
561 | check->has_leaks = result.leaks != 0; | |
562 | check->corruptions_fixed = result.corruptions_fixed; | |
563 | check->has_corruptions_fixed = result.corruptions != 0; | |
564 | check->leaks_fixed = result.leaks_fixed; | |
565 | check->has_leaks_fixed = result.leaks != 0; | |
566 | check->image_end_offset = result.image_end_offset; | |
567 | check->has_image_end_offset = result.image_end_offset != 0; | |
568 | check->total_clusters = result.bfi.total_clusters; | |
569 | check->has_total_clusters = result.bfi.total_clusters != 0; | |
570 | check->allocated_clusters = result.bfi.allocated_clusters; | |
571 | check->has_allocated_clusters = result.bfi.allocated_clusters != 0; | |
572 | check->fragmented_clusters = result.bfi.fragmented_clusters; | |
573 | check->has_fragmented_clusters = result.bfi.fragmented_clusters != 0; | |
e6439d78 SH |
574 | check->compressed_clusters = result.bfi.compressed_clusters; |
575 | check->has_compressed_clusters = result.bfi.compressed_clusters != 0; | |
8599ea4c FS |
576 | |
577 | return 0; | |
578 | } | |
579 | ||
e076f338 KW |
580 | /* |
581 | * Checks an image for consistency. Exit codes: | |
582 | * | |
d6635c4d HR |
583 | * 0 - Check completed, image is good |
584 | * 1 - Check not completed because of internal errors | |
585 | * 2 - Check completed, image is corrupted | |
586 | * 3 - Check completed, image has leaked clusters, but is good otherwise | |
587 | * 63 - Checks are not supported by the image format | |
e076f338 | 588 | */ |
1585969c AL |
589 | static int img_check(int argc, char **argv) |
590 | { | |
591 | int c, ret; | |
8599ea4c | 592 | OutputFormat output_format = OFORMAT_HUMAN; |
40055951 | 593 | const char *filename, *fmt, *output, *cache; |
26f54e9a | 594 | BlockBackend *blk; |
1585969c | 595 | BlockDriverState *bs; |
4534ff54 | 596 | int fix = 0; |
ce099547 KW |
597 | int flags = BDRV_O_CHECK; |
598 | bool writethrough; | |
7e7d56d9 | 599 | ImageCheck *check; |
f382d43a | 600 | bool quiet = false; |
eb769f74 | 601 | bool image_opts = false; |
1585969c AL |
602 | |
603 | fmt = NULL; | |
8599ea4c | 604 | output = NULL; |
40055951 | 605 | cache = BDRV_DEFAULT_CACHE; |
ce099547 | 606 | |
1585969c | 607 | for(;;) { |
8599ea4c FS |
608 | int option_index = 0; |
609 | static const struct option long_options[] = { | |
610 | {"help", no_argument, 0, 'h'}, | |
611 | {"format", required_argument, 0, 'f'}, | |
4fd6a984 | 612 | {"repair", required_argument, 0, 'r'}, |
8599ea4c | 613 | {"output", required_argument, 0, OPTION_OUTPUT}, |
3babeb15 | 614 | {"object", required_argument, 0, OPTION_OBJECT}, |
eb769f74 | 615 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
8599ea4c FS |
616 | {0, 0, 0, 0} |
617 | }; | |
40055951 | 618 | c = getopt_long(argc, argv, "hf:r:T:q", |
8599ea4c | 619 | long_options, &option_index); |
b8fb60da | 620 | if (c == -1) { |
1585969c | 621 | break; |
b8fb60da | 622 | } |
1585969c | 623 | switch(c) { |
ef87394c | 624 | case '?': |
1585969c AL |
625 | case 'h': |
626 | help(); | |
627 | break; | |
628 | case 'f': | |
629 | fmt = optarg; | |
630 | break; | |
4534ff54 KW |
631 | case 'r': |
632 | flags |= BDRV_O_RDWR; | |
633 | ||
634 | if (!strcmp(optarg, "leaks")) { | |
635 | fix = BDRV_FIX_LEAKS; | |
636 | } else if (!strcmp(optarg, "all")) { | |
637 | fix = BDRV_FIX_LEAKS | BDRV_FIX_ERRORS; | |
638 | } else { | |
ac1307ab FZ |
639 | error_exit("Unknown option value for -r " |
640 | "(expecting 'leaks' or 'all'): %s", optarg); | |
4534ff54 KW |
641 | } |
642 | break; | |
8599ea4c FS |
643 | case OPTION_OUTPUT: |
644 | output = optarg; | |
645 | break; | |
40055951 HR |
646 | case 'T': |
647 | cache = optarg; | |
648 | break; | |
f382d43a MR |
649 | case 'q': |
650 | quiet = true; | |
651 | break; | |
3babeb15 DB |
652 | case OPTION_OBJECT: { |
653 | QemuOpts *opts; | |
654 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
655 | optarg, true); | |
656 | if (!opts) { | |
657 | return 1; | |
658 | } | |
659 | } break; | |
eb769f74 DB |
660 | case OPTION_IMAGE_OPTS: |
661 | image_opts = true; | |
662 | break; | |
1585969c AL |
663 | } |
664 | } | |
fc11eb26 | 665 | if (optind != argc - 1) { |
ac1307ab | 666 | error_exit("Expecting one image file name"); |
b8fb60da | 667 | } |
1585969c AL |
668 | filename = argv[optind++]; |
669 | ||
8599ea4c FS |
670 | if (output && !strcmp(output, "json")) { |
671 | output_format = OFORMAT_JSON; | |
672 | } else if (output && !strcmp(output, "human")) { | |
673 | output_format = OFORMAT_HUMAN; | |
674 | } else if (output) { | |
675 | error_report("--output must be used with human or json as argument."); | |
676 | return 1; | |
677 | } | |
678 | ||
3babeb15 DB |
679 | if (qemu_opts_foreach(&qemu_object_opts, |
680 | user_creatable_add_opts_foreach, | |
51b9b478 | 681 | NULL, NULL)) { |
3babeb15 DB |
682 | return 1; |
683 | } | |
684 | ||
ce099547 | 685 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); |
40055951 HR |
686 | if (ret < 0) { |
687 | error_report("Invalid source cache option: %s", cache); | |
688 | return 1; | |
689 | } | |
690 | ||
ce099547 | 691 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet); |
7e7d56d9 MA |
692 | if (!blk) { |
693 | return 1; | |
c2abccec | 694 | } |
7e7d56d9 | 695 | bs = blk_bs(blk); |
8599ea4c FS |
696 | |
697 | check = g_new0(ImageCheck, 1); | |
698 | ret = collect_image_check(bs, check, filename, fmt, fix); | |
e076f338 KW |
699 | |
700 | if (ret == -ENOTSUP) { | |
55d492d7 | 701 | error_report("This image format does not support checks"); |
fefddf95 | 702 | ret = 63; |
8599ea4c | 703 | goto fail; |
e076f338 KW |
704 | } |
705 | ||
8599ea4c FS |
706 | if (check->corruptions_fixed || check->leaks_fixed) { |
707 | int corruptions_fixed, leaks_fixed; | |
ccf34716 | 708 | |
8599ea4c FS |
709 | leaks_fixed = check->leaks_fixed; |
710 | corruptions_fixed = check->corruptions_fixed; | |
e076f338 | 711 | |
8599ea4c | 712 | if (output_format == OFORMAT_HUMAN) { |
f382d43a MR |
713 | qprintf(quiet, |
714 | "The following inconsistencies were found and repaired:\n\n" | |
715 | " %" PRId64 " leaked clusters\n" | |
716 | " %" PRId64 " corruptions\n\n" | |
717 | "Double checking the fixed image now...\n", | |
718 | check->leaks_fixed, | |
719 | check->corruptions_fixed); | |
e076f338 KW |
720 | } |
721 | ||
8599ea4c | 722 | ret = collect_image_check(bs, check, filename, fmt, 0); |
1585969c | 723 | |
8599ea4c FS |
724 | check->leaks_fixed = leaks_fixed; |
725 | check->corruptions_fixed = corruptions_fixed; | |
f8111c24 DXW |
726 | } |
727 | ||
832390a5 HR |
728 | if (!ret) { |
729 | switch (output_format) { | |
730 | case OFORMAT_HUMAN: | |
731 | dump_human_image_check(check, quiet); | |
732 | break; | |
733 | case OFORMAT_JSON: | |
734 | dump_json_image_check(check, quiet); | |
735 | break; | |
736 | } | |
c6bb9ad1 FS |
737 | } |
738 | ||
8599ea4c | 739 | if (ret || check->check_errors) { |
832390a5 HR |
740 | if (ret) { |
741 | error_report("Check failed: %s", strerror(-ret)); | |
742 | } else { | |
743 | error_report("Check failed"); | |
744 | } | |
8599ea4c FS |
745 | ret = 1; |
746 | goto fail; | |
c2abccec | 747 | } |
e076f338 | 748 | |
8599ea4c FS |
749 | if (check->corruptions) { |
750 | ret = 2; | |
751 | } else if (check->leaks) { | |
752 | ret = 3; | |
e076f338 | 753 | } else { |
8599ea4c | 754 | ret = 0; |
e076f338 | 755 | } |
8599ea4c FS |
756 | |
757 | fail: | |
758 | qapi_free_ImageCheck(check); | |
26f54e9a | 759 | blk_unref(blk); |
8599ea4c | 760 | return ret; |
1585969c AL |
761 | } |
762 | ||
d4a3238a HR |
763 | typedef struct CommonBlockJobCBInfo { |
764 | BlockDriverState *bs; | |
765 | Error **errp; | |
766 | } CommonBlockJobCBInfo; | |
767 | ||
768 | static void common_block_job_cb(void *opaque, int ret) | |
769 | { | |
770 | CommonBlockJobCBInfo *cbi = opaque; | |
771 | ||
772 | if (ret < 0) { | |
773 | error_setg_errno(cbi->errp, -ret, "Block job failed"); | |
774 | } | |
d4a3238a HR |
775 | } |
776 | ||
777 | static void run_block_job(BlockJob *job, Error **errp) | |
778 | { | |
b75536c9 | 779 | AioContext *aio_context = blk_get_aio_context(job->blk); |
d4a3238a HR |
780 | |
781 | do { | |
782 | aio_poll(aio_context, true); | |
62547b8a JS |
783 | qemu_progress_print(job->len ? |
784 | ((float)job->offset / job->len * 100.f) : 0.0f, 0); | |
d4a3238a HR |
785 | } while (!job->ready); |
786 | ||
787 | block_job_complete_sync(job, errp); | |
687fa1d8 HR |
788 | |
789 | /* A block job may finish instantaneously without publishing any progress, | |
790 | * so just signal completion here */ | |
791 | qemu_progress_print(100.f, 0); | |
d4a3238a HR |
792 | } |
793 | ||
ea2384d3 FB |
794 | static int img_commit(int argc, char **argv) |
795 | { | |
661a0f71 | 796 | int c, ret, flags; |
1b22bffd | 797 | const char *filename, *fmt, *cache, *base; |
26f54e9a | 798 | BlockBackend *blk; |
d4a3238a | 799 | BlockDriverState *bs, *base_bs; |
687fa1d8 | 800 | bool progress = false, quiet = false, drop = false; |
ce099547 | 801 | bool writethrough; |
d4a3238a HR |
802 | Error *local_err = NULL; |
803 | CommonBlockJobCBInfo cbi; | |
eb769f74 | 804 | bool image_opts = false; |
ea2384d3 FB |
805 | |
806 | fmt = NULL; | |
661a0f71 | 807 | cache = BDRV_DEFAULT_CACHE; |
1b22bffd | 808 | base = NULL; |
ea2384d3 | 809 | for(;;) { |
3babeb15 DB |
810 | static const struct option long_options[] = { |
811 | {"help", no_argument, 0, 'h'}, | |
812 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 813 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
814 | {0, 0, 0, 0} |
815 | }; | |
816 | c = getopt_long(argc, argv, "f:ht:b:dpq", | |
817 | long_options, NULL); | |
b8fb60da | 818 | if (c == -1) { |
ea2384d3 | 819 | break; |
b8fb60da | 820 | } |
ea2384d3 | 821 | switch(c) { |
ef87394c | 822 | case '?': |
ea2384d3 FB |
823 | case 'h': |
824 | help(); | |
825 | break; | |
826 | case 'f': | |
827 | fmt = optarg; | |
828 | break; | |
661a0f71 FS |
829 | case 't': |
830 | cache = optarg; | |
831 | break; | |
1b22bffd HR |
832 | case 'b': |
833 | base = optarg; | |
834 | /* -b implies -d */ | |
835 | drop = true; | |
836 | break; | |
9a86fe48 HR |
837 | case 'd': |
838 | drop = true; | |
839 | break; | |
687fa1d8 HR |
840 | case 'p': |
841 | progress = true; | |
842 | break; | |
f382d43a MR |
843 | case 'q': |
844 | quiet = true; | |
845 | break; | |
3babeb15 DB |
846 | case OPTION_OBJECT: { |
847 | QemuOpts *opts; | |
848 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
849 | optarg, true); | |
850 | if (!opts) { | |
851 | return 1; | |
852 | } | |
853 | } break; | |
eb769f74 DB |
854 | case OPTION_IMAGE_OPTS: |
855 | image_opts = true; | |
856 | break; | |
ea2384d3 FB |
857 | } |
858 | } | |
687fa1d8 HR |
859 | |
860 | /* Progress is not shown in Quiet mode */ | |
861 | if (quiet) { | |
862 | progress = false; | |
863 | } | |
864 | ||
fc11eb26 | 865 | if (optind != argc - 1) { |
ac1307ab | 866 | error_exit("Expecting one image file name"); |
b8fb60da | 867 | } |
ea2384d3 FB |
868 | filename = argv[optind++]; |
869 | ||
3babeb15 DB |
870 | if (qemu_opts_foreach(&qemu_object_opts, |
871 | user_creatable_add_opts_foreach, | |
51b9b478 | 872 | NULL, NULL)) { |
3babeb15 DB |
873 | return 1; |
874 | } | |
875 | ||
9a86fe48 | 876 | flags = BDRV_O_RDWR | BDRV_O_UNMAP; |
ce099547 | 877 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); |
661a0f71 FS |
878 | if (ret < 0) { |
879 | error_report("Invalid cache option: %s", cache); | |
a3981eb9 | 880 | return 1; |
661a0f71 FS |
881 | } |
882 | ||
ce099547 | 883 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet); |
7e7d56d9 MA |
884 | if (!blk) { |
885 | return 1; | |
c2abccec | 886 | } |
7e7d56d9 MA |
887 | bs = blk_bs(blk); |
888 | ||
687fa1d8 HR |
889 | qemu_progress_init(progress, 1.f); |
890 | qemu_progress_print(0.f, 100); | |
891 | ||
1b22bffd HR |
892 | if (base) { |
893 | base_bs = bdrv_find_backing_image(bs, base); | |
894 | if (!base_bs) { | |
c6bd8c70 | 895 | error_setg(&local_err, QERR_BASE_NOT_FOUND, base); |
1b22bffd HR |
896 | goto done; |
897 | } | |
898 | } else { | |
899 | /* This is different from QMP, which by default uses the deepest file in | |
900 | * the backing chain (i.e., the very base); however, the traditional | |
901 | * behavior of qemu-img commit is using the immediate backing file. */ | |
760e0063 | 902 | base_bs = backing_bs(bs); |
1b22bffd HR |
903 | if (!base_bs) { |
904 | error_setg(&local_err, "Image does not have a backing file"); | |
905 | goto done; | |
906 | } | |
d4a3238a HR |
907 | } |
908 | ||
909 | cbi = (CommonBlockJobCBInfo){ | |
910 | .errp = &local_err, | |
911 | .bs = bs, | |
912 | }; | |
913 | ||
914 | commit_active_start(bs, base_bs, 0, BLOCKDEV_ON_ERROR_REPORT, | |
915 | common_block_job_cb, &cbi, &local_err); | |
916 | if (local_err) { | |
917 | goto done; | |
ea2384d3 FB |
918 | } |
919 | ||
3f09bfbc KW |
920 | /* When the block job completes, the BlockBackend reference will point to |
921 | * the old backing file. In order to avoid that the top image is already | |
922 | * deleted, so we can still empty it afterwards, increment the reference | |
923 | * counter here preemptively. */ | |
9a86fe48 | 924 | if (!drop) { |
3f09bfbc | 925 | bdrv_ref(bs); |
9a86fe48 HR |
926 | } |
927 | ||
d4a3238a | 928 | run_block_job(bs->job, &local_err); |
9a86fe48 HR |
929 | if (local_err) { |
930 | goto unref_backing; | |
931 | } | |
932 | ||
3f09bfbc KW |
933 | if (!drop && bs->drv->bdrv_make_empty) { |
934 | ret = bs->drv->bdrv_make_empty(bs); | |
9a86fe48 HR |
935 | if (ret) { |
936 | error_setg_errno(&local_err, -ret, "Could not empty %s", | |
937 | filename); | |
938 | goto unref_backing; | |
939 | } | |
940 | } | |
941 | ||
942 | unref_backing: | |
943 | if (!drop) { | |
3f09bfbc | 944 | bdrv_unref(bs); |
9a86fe48 | 945 | } |
d4a3238a HR |
946 | |
947 | done: | |
687fa1d8 HR |
948 | qemu_progress_end(); |
949 | ||
26f54e9a | 950 | blk_unref(blk); |
d4a3238a HR |
951 | |
952 | if (local_err) { | |
6936f299 | 953 | error_report_err(local_err); |
c2abccec MK |
954 | return 1; |
955 | } | |
d4a3238a HR |
956 | |
957 | qprintf(quiet, "Image committed.\n"); | |
ea2384d3 FB |
958 | return 0; |
959 | } | |
960 | ||
f58c7b35 TS |
961 | /* |
962 | * Returns true iff the first sector pointed to by 'buf' contains at least | |
963 | * a non-NUL byte. | |
964 | * | |
965 | * 'pnum' is set to the number of sectors (including and immediately following | |
966 | * the first one) that are known to be in the same allocated/unallocated state. | |
967 | */ | |
ea2384d3 FB |
968 | static int is_allocated_sectors(const uint8_t *buf, int n, int *pnum) |
969 | { | |
1a6d39fd SH |
970 | bool is_zero; |
971 | int i; | |
ea2384d3 FB |
972 | |
973 | if (n <= 0) { | |
974 | *pnum = 0; | |
975 | return 0; | |
976 | } | |
1a6d39fd | 977 | is_zero = buffer_is_zero(buf, 512); |
ea2384d3 FB |
978 | for(i = 1; i < n; i++) { |
979 | buf += 512; | |
1a6d39fd | 980 | if (is_zero != buffer_is_zero(buf, 512)) { |
ea2384d3 | 981 | break; |
1a6d39fd | 982 | } |
ea2384d3 FB |
983 | } |
984 | *pnum = i; | |
1a6d39fd | 985 | return !is_zero; |
ea2384d3 FB |
986 | } |
987 | ||
a22f123c KW |
988 | /* |
989 | * Like is_allocated_sectors, but if the buffer starts with a used sector, | |
990 | * up to 'min' consecutive sectors containing zeros are ignored. This avoids | |
991 | * breaking up write requests for only small sparse areas. | |
992 | */ | |
993 | static int is_allocated_sectors_min(const uint8_t *buf, int n, int *pnum, | |
994 | int min) | |
995 | { | |
996 | int ret; | |
997 | int num_checked, num_used; | |
998 | ||
999 | if (n < min) { | |
1000 | min = n; | |
1001 | } | |
1002 | ||
1003 | ret = is_allocated_sectors(buf, n, pnum); | |
1004 | if (!ret) { | |
1005 | return ret; | |
1006 | } | |
1007 | ||
1008 | num_used = *pnum; | |
1009 | buf += BDRV_SECTOR_SIZE * *pnum; | |
1010 | n -= *pnum; | |
1011 | num_checked = num_used; | |
1012 | ||
1013 | while (n > 0) { | |
1014 | ret = is_allocated_sectors(buf, n, pnum); | |
1015 | ||
1016 | buf += BDRV_SECTOR_SIZE * *pnum; | |
1017 | n -= *pnum; | |
1018 | num_checked += *pnum; | |
1019 | if (ret) { | |
1020 | num_used = num_checked; | |
1021 | } else if (*pnum >= min) { | |
1022 | break; | |
1023 | } | |
1024 | } | |
1025 | ||
1026 | *pnum = num_used; | |
1027 | return 1; | |
1028 | } | |
1029 | ||
3e85c6fd KW |
1030 | /* |
1031 | * Compares two buffers sector by sector. Returns 0 if the first sector of both | |
1032 | * buffers matches, non-zero otherwise. | |
1033 | * | |
1034 | * pnum is set to the number of sectors (including and immediately following | |
1035 | * the first one) that are known to have the same comparison result | |
1036 | */ | |
1037 | static int compare_sectors(const uint8_t *buf1, const uint8_t *buf2, int n, | |
1038 | int *pnum) | |
1039 | { | |
8c1ac475 RK |
1040 | bool res; |
1041 | int i; | |
3e85c6fd KW |
1042 | |
1043 | if (n <= 0) { | |
1044 | *pnum = 0; | |
1045 | return 0; | |
1046 | } | |
1047 | ||
1048 | res = !!memcmp(buf1, buf2, 512); | |
1049 | for(i = 1; i < n; i++) { | |
1050 | buf1 += 512; | |
1051 | buf2 += 512; | |
1052 | ||
1053 | if (!!memcmp(buf1, buf2, 512) != res) { | |
1054 | break; | |
1055 | } | |
1056 | } | |
1057 | ||
1058 | *pnum = i; | |
1059 | return res; | |
1060 | } | |
1061 | ||
80ee15a6 | 1062 | #define IO_BUF_SIZE (2 * 1024 * 1024) |
ea2384d3 | 1063 | |
d14ed18c MR |
1064 | static int64_t sectors_to_bytes(int64_t sectors) |
1065 | { | |
1066 | return sectors << BDRV_SECTOR_BITS; | |
1067 | } | |
1068 | ||
1069 | static int64_t sectors_to_process(int64_t total, int64_t from) | |
1070 | { | |
1071 | return MIN(total - from, IO_BUF_SIZE >> BDRV_SECTOR_BITS); | |
1072 | } | |
1073 | ||
1074 | /* | |
1075 | * Check if passed sectors are empty (not allocated or contain only 0 bytes) | |
1076 | * | |
1077 | * Returns 0 in case sectors are filled with 0, 1 if sectors contain non-zero | |
1078 | * data and negative value on error. | |
1079 | * | |
f1d3cd79 | 1080 | * @param blk: BlockBackend for the image |
d14ed18c MR |
1081 | * @param sect_num: Number of first sector to check |
1082 | * @param sect_count: Number of sectors to check | |
1083 | * @param filename: Name of disk file we are checking (logging purpose) | |
1084 | * @param buffer: Allocated buffer for storing read data | |
1085 | * @param quiet: Flag for quiet mode | |
1086 | */ | |
f1d3cd79 | 1087 | static int check_empty_sectors(BlockBackend *blk, int64_t sect_num, |
d14ed18c MR |
1088 | int sect_count, const char *filename, |
1089 | uint8_t *buffer, bool quiet) | |
1090 | { | |
1091 | int pnum, ret = 0; | |
9166920a EB |
1092 | ret = blk_pread(blk, sect_num << BDRV_SECTOR_BITS, buffer, |
1093 | sect_count << BDRV_SECTOR_BITS); | |
d14ed18c MR |
1094 | if (ret < 0) { |
1095 | error_report("Error while reading offset %" PRId64 " of %s: %s", | |
1096 | sectors_to_bytes(sect_num), filename, strerror(-ret)); | |
1097 | return ret; | |
1098 | } | |
1099 | ret = is_allocated_sectors(buffer, sect_count, &pnum); | |
1100 | if (ret || pnum != sect_count) { | |
1101 | qprintf(quiet, "Content mismatch at offset %" PRId64 "!\n", | |
1102 | sectors_to_bytes(ret ? sect_num : sect_num + pnum)); | |
1103 | return 1; | |
1104 | } | |
1105 | ||
1106 | return 0; | |
1107 | } | |
1108 | ||
1109 | /* | |
1110 | * Compares two images. Exit codes: | |
1111 | * | |
1112 | * 0 - Images are identical | |
1113 | * 1 - Images differ | |
1114 | * >1 - Error occurred | |
1115 | */ | |
1116 | static int img_compare(int argc, char **argv) | |
1117 | { | |
40055951 | 1118 | const char *fmt1 = NULL, *fmt2 = NULL, *cache, *filename1, *filename2; |
26f54e9a | 1119 | BlockBackend *blk1, *blk2; |
d14ed18c MR |
1120 | BlockDriverState *bs1, *bs2; |
1121 | int64_t total_sectors1, total_sectors2; | |
1122 | uint8_t *buf1 = NULL, *buf2 = NULL; | |
1123 | int pnum1, pnum2; | |
1124 | int allocated1, allocated2; | |
1125 | int ret = 0; /* return value - 0 Ident, 1 Different, >1 Error */ | |
1126 | bool progress = false, quiet = false, strict = false; | |
40055951 | 1127 | int flags; |
ce099547 | 1128 | bool writethrough; |
d14ed18c MR |
1129 | int64_t total_sectors; |
1130 | int64_t sector_num = 0; | |
1131 | int64_t nb_sectors; | |
1132 | int c, pnum; | |
d14ed18c | 1133 | uint64_t progress_base; |
eb769f74 | 1134 | bool image_opts = false; |
d14ed18c | 1135 | |
40055951 | 1136 | cache = BDRV_DEFAULT_CACHE; |
d14ed18c | 1137 | for (;;) { |
3babeb15 DB |
1138 | static const struct option long_options[] = { |
1139 | {"help", no_argument, 0, 'h'}, | |
1140 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 1141 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
1142 | {0, 0, 0, 0} |
1143 | }; | |
1144 | c = getopt_long(argc, argv, "hf:F:T:pqs", | |
1145 | long_options, NULL); | |
d14ed18c MR |
1146 | if (c == -1) { |
1147 | break; | |
1148 | } | |
1149 | switch (c) { | |
1150 | case '?': | |
1151 | case 'h': | |
1152 | help(); | |
1153 | break; | |
1154 | case 'f': | |
1155 | fmt1 = optarg; | |
1156 | break; | |
1157 | case 'F': | |
1158 | fmt2 = optarg; | |
1159 | break; | |
40055951 HR |
1160 | case 'T': |
1161 | cache = optarg; | |
1162 | break; | |
d14ed18c MR |
1163 | case 'p': |
1164 | progress = true; | |
1165 | break; | |
1166 | case 'q': | |
1167 | quiet = true; | |
1168 | break; | |
1169 | case 's': | |
1170 | strict = true; | |
1171 | break; | |
3babeb15 DB |
1172 | case OPTION_OBJECT: { |
1173 | QemuOpts *opts; | |
1174 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
1175 | optarg, true); | |
1176 | if (!opts) { | |
1177 | ret = 2; | |
1178 | goto out4; | |
1179 | } | |
1180 | } break; | |
eb769f74 DB |
1181 | case OPTION_IMAGE_OPTS: |
1182 | image_opts = true; | |
1183 | break; | |
d14ed18c MR |
1184 | } |
1185 | } | |
1186 | ||
1187 | /* Progress is not shown in Quiet mode */ | |
1188 | if (quiet) { | |
1189 | progress = false; | |
1190 | } | |
1191 | ||
1192 | ||
fc11eb26 | 1193 | if (optind != argc - 2) { |
ac1307ab | 1194 | error_exit("Expecting two image file names"); |
d14ed18c MR |
1195 | } |
1196 | filename1 = argv[optind++]; | |
1197 | filename2 = argv[optind++]; | |
1198 | ||
3babeb15 DB |
1199 | if (qemu_opts_foreach(&qemu_object_opts, |
1200 | user_creatable_add_opts_foreach, | |
51b9b478 | 1201 | NULL, NULL)) { |
3babeb15 DB |
1202 | ret = 2; |
1203 | goto out4; | |
1204 | } | |
1205 | ||
cbda016d SH |
1206 | /* Initialize before goto out */ |
1207 | qemu_progress_init(progress, 2.0); | |
1208 | ||
ce099547 KW |
1209 | flags = 0; |
1210 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); | |
40055951 HR |
1211 | if (ret < 0) { |
1212 | error_report("Invalid source cache option: %s", cache); | |
1213 | ret = 2; | |
1214 | goto out3; | |
1215 | } | |
1216 | ||
ce099547 | 1217 | blk1 = img_open(image_opts, filename1, fmt1, flags, writethrough, quiet); |
7e7d56d9 | 1218 | if (!blk1) { |
d14ed18c | 1219 | ret = 2; |
7e7d56d9 | 1220 | goto out3; |
d14ed18c MR |
1221 | } |
1222 | ||
ce099547 | 1223 | blk2 = img_open(image_opts, filename2, fmt2, flags, writethrough, quiet); |
7e7d56d9 | 1224 | if (!blk2) { |
d14ed18c | 1225 | ret = 2; |
7e7d56d9 | 1226 | goto out2; |
d14ed18c | 1227 | } |
eb769f74 | 1228 | bs1 = blk_bs(blk1); |
7e7d56d9 | 1229 | bs2 = blk_bs(blk2); |
d14ed18c | 1230 | |
f1d3cd79 HR |
1231 | buf1 = blk_blockalign(blk1, IO_BUF_SIZE); |
1232 | buf2 = blk_blockalign(blk2, IO_BUF_SIZE); | |
1233 | total_sectors1 = blk_nb_sectors(blk1); | |
52bf1e72 MA |
1234 | if (total_sectors1 < 0) { |
1235 | error_report("Can't get size of %s: %s", | |
1236 | filename1, strerror(-total_sectors1)); | |
1237 | ret = 4; | |
1238 | goto out; | |
1239 | } | |
f1d3cd79 | 1240 | total_sectors2 = blk_nb_sectors(blk2); |
52bf1e72 MA |
1241 | if (total_sectors2 < 0) { |
1242 | error_report("Can't get size of %s: %s", | |
1243 | filename2, strerror(-total_sectors2)); | |
1244 | ret = 4; | |
1245 | goto out; | |
1246 | } | |
d14ed18c MR |
1247 | total_sectors = MIN(total_sectors1, total_sectors2); |
1248 | progress_base = MAX(total_sectors1, total_sectors2); | |
1249 | ||
1250 | qemu_progress_print(0, 100); | |
1251 | ||
1252 | if (strict && total_sectors1 != total_sectors2) { | |
1253 | ret = 1; | |
1254 | qprintf(quiet, "Strict mode: Image size mismatch!\n"); | |
1255 | goto out; | |
1256 | } | |
1257 | ||
1258 | for (;;) { | |
25ad8e6e | 1259 | int64_t status1, status2; |
67a0fd2a FZ |
1260 | BlockDriverState *file; |
1261 | ||
d14ed18c MR |
1262 | nb_sectors = sectors_to_process(total_sectors, sector_num); |
1263 | if (nb_sectors <= 0) { | |
1264 | break; | |
1265 | } | |
25ad8e6e FZ |
1266 | status1 = bdrv_get_block_status_above(bs1, NULL, sector_num, |
1267 | total_sectors1 - sector_num, | |
67a0fd2a | 1268 | &pnum1, &file); |
25ad8e6e | 1269 | if (status1 < 0) { |
d14ed18c MR |
1270 | ret = 3; |
1271 | error_report("Sector allocation test failed for %s", filename1); | |
1272 | goto out; | |
1273 | } | |
25ad8e6e | 1274 | allocated1 = status1 & BDRV_BLOCK_ALLOCATED; |
d14ed18c | 1275 | |
25ad8e6e FZ |
1276 | status2 = bdrv_get_block_status_above(bs2, NULL, sector_num, |
1277 | total_sectors2 - sector_num, | |
67a0fd2a | 1278 | &pnum2, &file); |
25ad8e6e | 1279 | if (status2 < 0) { |
d14ed18c MR |
1280 | ret = 3; |
1281 | error_report("Sector allocation test failed for %s", filename2); | |
1282 | goto out; | |
1283 | } | |
25ad8e6e FZ |
1284 | allocated2 = status2 & BDRV_BLOCK_ALLOCATED; |
1285 | if (pnum1) { | |
1286 | nb_sectors = MIN(nb_sectors, pnum1); | |
1287 | } | |
1288 | if (pnum2) { | |
1289 | nb_sectors = MIN(nb_sectors, pnum2); | |
1290 | } | |
d14ed18c | 1291 | |
25ad8e6e FZ |
1292 | if (strict) { |
1293 | if ((status1 & ~BDRV_BLOCK_OFFSET_MASK) != | |
1294 | (status2 & ~BDRV_BLOCK_OFFSET_MASK)) { | |
1295 | ret = 1; | |
1296 | qprintf(quiet, "Strict mode: Offset %" PRId64 | |
1297 | " block status mismatch!\n", | |
1298 | sectors_to_bytes(sector_num)); | |
1299 | goto out; | |
1300 | } | |
1301 | } | |
1302 | if ((status1 & BDRV_BLOCK_ZERO) && (status2 & BDRV_BLOCK_ZERO)) { | |
1303 | nb_sectors = MIN(pnum1, pnum2); | |
1304 | } else if (allocated1 == allocated2) { | |
d14ed18c | 1305 | if (allocated1) { |
9166920a EB |
1306 | ret = blk_pread(blk1, sector_num << BDRV_SECTOR_BITS, buf1, |
1307 | nb_sectors << BDRV_SECTOR_BITS); | |
d14ed18c MR |
1308 | if (ret < 0) { |
1309 | error_report("Error while reading offset %" PRId64 " of %s:" | |
1310 | " %s", sectors_to_bytes(sector_num), filename1, | |
1311 | strerror(-ret)); | |
1312 | ret = 4; | |
1313 | goto out; | |
1314 | } | |
9166920a EB |
1315 | ret = blk_pread(blk2, sector_num << BDRV_SECTOR_BITS, buf2, |
1316 | nb_sectors << BDRV_SECTOR_BITS); | |
d14ed18c MR |
1317 | if (ret < 0) { |
1318 | error_report("Error while reading offset %" PRId64 | |
1319 | " of %s: %s", sectors_to_bytes(sector_num), | |
1320 | filename2, strerror(-ret)); | |
1321 | ret = 4; | |
1322 | goto out; | |
1323 | } | |
1324 | ret = compare_sectors(buf1, buf2, nb_sectors, &pnum); | |
1325 | if (ret || pnum != nb_sectors) { | |
d14ed18c MR |
1326 | qprintf(quiet, "Content mismatch at offset %" PRId64 "!\n", |
1327 | sectors_to_bytes( | |
1328 | ret ? sector_num : sector_num + pnum)); | |
36452f12 | 1329 | ret = 1; |
d14ed18c MR |
1330 | goto out; |
1331 | } | |
1332 | } | |
1333 | } else { | |
d14ed18c MR |
1334 | |
1335 | if (allocated1) { | |
f1d3cd79 | 1336 | ret = check_empty_sectors(blk1, sector_num, nb_sectors, |
d14ed18c MR |
1337 | filename1, buf1, quiet); |
1338 | } else { | |
f1d3cd79 | 1339 | ret = check_empty_sectors(blk2, sector_num, nb_sectors, |
d14ed18c MR |
1340 | filename2, buf1, quiet); |
1341 | } | |
1342 | if (ret) { | |
1343 | if (ret < 0) { | |
d14ed18c MR |
1344 | error_report("Error while reading offset %" PRId64 ": %s", |
1345 | sectors_to_bytes(sector_num), strerror(-ret)); | |
36452f12 | 1346 | ret = 4; |
d14ed18c MR |
1347 | } |
1348 | goto out; | |
1349 | } | |
1350 | } | |
1351 | sector_num += nb_sectors; | |
1352 | qemu_progress_print(((float) nb_sectors / progress_base)*100, 100); | |
1353 | } | |
1354 | ||
1355 | if (total_sectors1 != total_sectors2) { | |
f1d3cd79 | 1356 | BlockBackend *blk_over; |
d14ed18c MR |
1357 | int64_t total_sectors_over; |
1358 | const char *filename_over; | |
1359 | ||
1360 | qprintf(quiet, "Warning: Image size mismatch!\n"); | |
1361 | if (total_sectors1 > total_sectors2) { | |
1362 | total_sectors_over = total_sectors1; | |
f1d3cd79 | 1363 | blk_over = blk1; |
d14ed18c MR |
1364 | filename_over = filename1; |
1365 | } else { | |
1366 | total_sectors_over = total_sectors2; | |
f1d3cd79 | 1367 | blk_over = blk2; |
d14ed18c MR |
1368 | filename_over = filename2; |
1369 | } | |
1370 | ||
1371 | for (;;) { | |
1372 | nb_sectors = sectors_to_process(total_sectors_over, sector_num); | |
1373 | if (nb_sectors <= 0) { | |
1374 | break; | |
1375 | } | |
f1d3cd79 | 1376 | ret = bdrv_is_allocated_above(blk_bs(blk_over), NULL, sector_num, |
d14ed18c MR |
1377 | nb_sectors, &pnum); |
1378 | if (ret < 0) { | |
1379 | ret = 3; | |
1380 | error_report("Sector allocation test failed for %s", | |
1381 | filename_over); | |
1382 | goto out; | |
1383 | ||
1384 | } | |
1385 | nb_sectors = pnum; | |
1386 | if (ret) { | |
f1d3cd79 | 1387 | ret = check_empty_sectors(blk_over, sector_num, nb_sectors, |
d14ed18c MR |
1388 | filename_over, buf1, quiet); |
1389 | if (ret) { | |
1390 | if (ret < 0) { | |
d14ed18c MR |
1391 | error_report("Error while reading offset %" PRId64 |
1392 | " of %s: %s", sectors_to_bytes(sector_num), | |
1393 | filename_over, strerror(-ret)); | |
36452f12 | 1394 | ret = 4; |
d14ed18c MR |
1395 | } |
1396 | goto out; | |
1397 | } | |
1398 | } | |
1399 | sector_num += nb_sectors; | |
1400 | qemu_progress_print(((float) nb_sectors / progress_base)*100, 100); | |
1401 | } | |
1402 | } | |
1403 | ||
1404 | qprintf(quiet, "Images are identical.\n"); | |
1405 | ret = 0; | |
1406 | ||
1407 | out: | |
d14ed18c MR |
1408 | qemu_vfree(buf1); |
1409 | qemu_vfree(buf2); | |
26f54e9a | 1410 | blk_unref(blk2); |
d14ed18c | 1411 | out2: |
26f54e9a | 1412 | blk_unref(blk1); |
d14ed18c MR |
1413 | out3: |
1414 | qemu_progress_end(); | |
3babeb15 | 1415 | out4: |
d14ed18c MR |
1416 | return ret; |
1417 | } | |
1418 | ||
690c7301 KW |
1419 | enum ImgConvertBlockStatus { |
1420 | BLK_DATA, | |
1421 | BLK_ZERO, | |
1422 | BLK_BACKING_FILE, | |
1423 | }; | |
1424 | ||
1425 | typedef struct ImgConvertState { | |
1426 | BlockBackend **src; | |
1427 | int64_t *src_sectors; | |
1428 | int src_cur, src_num; | |
1429 | int64_t src_cur_offset; | |
1430 | int64_t total_sectors; | |
1431 | int64_t allocated_sectors; | |
1432 | enum ImgConvertBlockStatus status; | |
1433 | int64_t sector_next_status; | |
1434 | BlockBackend *target; | |
1435 | bool has_zero_init; | |
1436 | bool compressed; | |
1437 | bool target_has_backing; | |
1438 | int min_sparse; | |
1439 | size_t cluster_sectors; | |
1440 | size_t buf_sectors; | |
1441 | } ImgConvertState; | |
1442 | ||
1443 | static void convert_select_part(ImgConvertState *s, int64_t sector_num) | |
1444 | { | |
1445 | assert(sector_num >= s->src_cur_offset); | |
1446 | while (sector_num - s->src_cur_offset >= s->src_sectors[s->src_cur]) { | |
1447 | s->src_cur_offset += s->src_sectors[s->src_cur]; | |
1448 | s->src_cur++; | |
1449 | assert(s->src_cur < s->src_num); | |
1450 | } | |
1451 | } | |
1452 | ||
1453 | static int convert_iteration_sectors(ImgConvertState *s, int64_t sector_num) | |
1454 | { | |
1455 | int64_t ret; | |
1456 | int n; | |
1457 | ||
1458 | convert_select_part(s, sector_num); | |
1459 | ||
1460 | assert(s->total_sectors > sector_num); | |
1461 | n = MIN(s->total_sectors - sector_num, BDRV_REQUEST_MAX_SECTORS); | |
1462 | ||
1463 | if (s->sector_next_status <= sector_num) { | |
67a0fd2a | 1464 | BlockDriverState *file; |
690c7301 KW |
1465 | ret = bdrv_get_block_status(blk_bs(s->src[s->src_cur]), |
1466 | sector_num - s->src_cur_offset, | |
67a0fd2a | 1467 | n, &n, &file); |
690c7301 KW |
1468 | if (ret < 0) { |
1469 | return ret; | |
1470 | } | |
1471 | ||
1472 | if (ret & BDRV_BLOCK_ZERO) { | |
1473 | s->status = BLK_ZERO; | |
1474 | } else if (ret & BDRV_BLOCK_DATA) { | |
1475 | s->status = BLK_DATA; | |
1476 | } else if (!s->target_has_backing) { | |
1477 | /* Without a target backing file we must copy over the contents of | |
1478 | * the backing file as well. */ | |
263a6f4c | 1479 | /* Check block status of the backing file chain to avoid |
690c7301 KW |
1480 | * needlessly reading zeroes and limiting the iteration to the |
1481 | * buffer size */ | |
263a6f4c RK |
1482 | ret = bdrv_get_block_status_above(blk_bs(s->src[s->src_cur]), NULL, |
1483 | sector_num - s->src_cur_offset, | |
1484 | n, &n, &file); | |
1485 | if (ret < 0) { | |
1486 | return ret; | |
1487 | } | |
1488 | ||
1489 | if (ret & BDRV_BLOCK_ZERO) { | |
1490 | s->status = BLK_ZERO; | |
1491 | } else { | |
1492 | s->status = BLK_DATA; | |
1493 | } | |
690c7301 KW |
1494 | } else { |
1495 | s->status = BLK_BACKING_FILE; | |
1496 | } | |
1497 | ||
1498 | s->sector_next_status = sector_num + n; | |
1499 | } | |
1500 | ||
1501 | n = MIN(n, s->sector_next_status - sector_num); | |
1502 | if (s->status == BLK_DATA) { | |
1503 | n = MIN(n, s->buf_sectors); | |
1504 | } | |
1505 | ||
1506 | /* We need to write complete clusters for compressed images, so if an | |
1507 | * unallocated area is shorter than that, we must consider the whole | |
1508 | * cluster allocated. */ | |
1509 | if (s->compressed) { | |
1510 | if (n < s->cluster_sectors) { | |
1511 | n = MIN(s->cluster_sectors, s->total_sectors - sector_num); | |
1512 | s->status = BLK_DATA; | |
1513 | } else { | |
1514 | n = QEMU_ALIGN_DOWN(n, s->cluster_sectors); | |
1515 | } | |
1516 | } | |
1517 | ||
1518 | return n; | |
1519 | } | |
1520 | ||
1521 | static int convert_read(ImgConvertState *s, int64_t sector_num, int nb_sectors, | |
1522 | uint8_t *buf) | |
1523 | { | |
1524 | int n; | |
1525 | int ret; | |
1526 | ||
690c7301 KW |
1527 | assert(nb_sectors <= s->buf_sectors); |
1528 | while (nb_sectors > 0) { | |
1529 | BlockBackend *blk; | |
1530 | int64_t bs_sectors; | |
1531 | ||
1532 | /* In the case of compression with multiple source files, we can get a | |
1533 | * nb_sectors that spreads into the next part. So we must be able to | |
1534 | * read across multiple BDSes for one convert_read() call. */ | |
1535 | convert_select_part(s, sector_num); | |
1536 | blk = s->src[s->src_cur]; | |
1537 | bs_sectors = s->src_sectors[s->src_cur]; | |
1538 | ||
1539 | n = MIN(nb_sectors, bs_sectors - (sector_num - s->src_cur_offset)); | |
9166920a EB |
1540 | ret = blk_pread(blk, |
1541 | (sector_num - s->src_cur_offset) << BDRV_SECTOR_BITS, | |
1542 | buf, n << BDRV_SECTOR_BITS); | |
690c7301 KW |
1543 | if (ret < 0) { |
1544 | return ret; | |
1545 | } | |
1546 | ||
1547 | sector_num += n; | |
1548 | nb_sectors -= n; | |
1549 | buf += n * BDRV_SECTOR_SIZE; | |
1550 | } | |
1551 | ||
1552 | return 0; | |
1553 | } | |
1554 | ||
1555 | static int convert_write(ImgConvertState *s, int64_t sector_num, int nb_sectors, | |
1556 | const uint8_t *buf) | |
1557 | { | |
1558 | int ret; | |
1559 | ||
1560 | while (nb_sectors > 0) { | |
1561 | int n = nb_sectors; | |
1562 | ||
1563 | switch (s->status) { | |
1564 | case BLK_BACKING_FILE: | |
1565 | /* If we have a backing file, leave clusters unallocated that are | |
1566 | * unallocated in the source image, so that the backing file is | |
1567 | * visible at the respective offset. */ | |
1568 | assert(s->target_has_backing); | |
1569 | break; | |
1570 | ||
1571 | case BLK_DATA: | |
1572 | /* We must always write compressed clusters as a whole, so don't | |
1573 | * try to find zeroed parts in the buffer. We can only save the | |
1574 | * write if the buffer is completely zeroed and we're allowed to | |
1575 | * keep the target sparse. */ | |
1576 | if (s->compressed) { | |
1577 | if (s->has_zero_init && s->min_sparse && | |
1578 | buffer_is_zero(buf, n * BDRV_SECTOR_SIZE)) | |
1579 | { | |
1580 | assert(!s->target_has_backing); | |
1581 | break; | |
1582 | } | |
1583 | ||
1584 | ret = blk_write_compressed(s->target, sector_num, buf, n); | |
1585 | if (ret < 0) { | |
1586 | return ret; | |
1587 | } | |
1588 | break; | |
1589 | } | |
1590 | ||
1591 | /* If there is real non-zero data or we're told to keep the target | |
1592 | * fully allocated (-S 0), we must write it. Otherwise we can treat | |
1593 | * it as zero sectors. */ | |
1594 | if (!s->min_sparse || | |
1595 | is_allocated_sectors_min(buf, n, &n, s->min_sparse)) | |
1596 | { | |
9166920a EB |
1597 | ret = blk_pwrite(s->target, sector_num << BDRV_SECTOR_BITS, |
1598 | buf, n << BDRV_SECTOR_BITS, 0); | |
690c7301 KW |
1599 | if (ret < 0) { |
1600 | return ret; | |
1601 | } | |
1602 | break; | |
1603 | } | |
1604 | /* fall-through */ | |
1605 | ||
1606 | case BLK_ZERO: | |
1607 | if (s->has_zero_init) { | |
1608 | break; | |
1609 | } | |
d004bd52 EB |
1610 | ret = blk_pwrite_zeroes(s->target, sector_num << BDRV_SECTOR_BITS, |
1611 | n << BDRV_SECTOR_BITS, 0); | |
690c7301 KW |
1612 | if (ret < 0) { |
1613 | return ret; | |
1614 | } | |
1615 | break; | |
1616 | } | |
1617 | ||
1618 | sector_num += n; | |
1619 | nb_sectors -= n; | |
1620 | buf += n * BDRV_SECTOR_SIZE; | |
1621 | } | |
1622 | ||
1623 | return 0; | |
1624 | } | |
1625 | ||
1626 | static int convert_do_copy(ImgConvertState *s) | |
1627 | { | |
1628 | uint8_t *buf = NULL; | |
1629 | int64_t sector_num, allocated_done; | |
1630 | int ret; | |
1631 | int n; | |
1632 | ||
1633 | /* Check whether we have zero initialisation or can get it efficiently */ | |
1634 | s->has_zero_init = s->min_sparse && !s->target_has_backing | |
1635 | ? bdrv_has_zero_init(blk_bs(s->target)) | |
1636 | : false; | |
1637 | ||
1638 | if (!s->has_zero_init && !s->target_has_backing && | |
1639 | bdrv_can_write_zeroes_with_unmap(blk_bs(s->target))) | |
1640 | { | |
1641 | ret = bdrv_make_zero(blk_bs(s->target), BDRV_REQ_MAY_UNMAP); | |
1642 | if (ret == 0) { | |
1643 | s->has_zero_init = true; | |
1644 | } | |
1645 | } | |
1646 | ||
1647 | /* Allocate buffer for copied data. For compressed images, only one cluster | |
1648 | * can be copied at a time. */ | |
1649 | if (s->compressed) { | |
1650 | if (s->cluster_sectors <= 0 || s->cluster_sectors > s->buf_sectors) { | |
1651 | error_report("invalid cluster size"); | |
1652 | ret = -EINVAL; | |
1653 | goto fail; | |
1654 | } | |
1655 | s->buf_sectors = s->cluster_sectors; | |
1656 | } | |
1657 | buf = blk_blockalign(s->target, s->buf_sectors * BDRV_SECTOR_SIZE); | |
1658 | ||
1659 | /* Calculate allocated sectors for progress */ | |
1660 | s->allocated_sectors = 0; | |
1661 | sector_num = 0; | |
1662 | while (sector_num < s->total_sectors) { | |
1663 | n = convert_iteration_sectors(s, sector_num); | |
1664 | if (n < 0) { | |
1665 | ret = n; | |
1666 | goto fail; | |
1667 | } | |
aad15de4 HR |
1668 | if (s->status == BLK_DATA || (!s->min_sparse && s->status == BLK_ZERO)) |
1669 | { | |
690c7301 KW |
1670 | s->allocated_sectors += n; |
1671 | } | |
1672 | sector_num += n; | |
1673 | } | |
1674 | ||
1675 | /* Do the copy */ | |
1676 | s->src_cur = 0; | |
1677 | s->src_cur_offset = 0; | |
1678 | s->sector_next_status = 0; | |
1679 | ||
1680 | sector_num = 0; | |
1681 | allocated_done = 0; | |
1682 | ||
1683 | while (sector_num < s->total_sectors) { | |
1684 | n = convert_iteration_sectors(s, sector_num); | |
1685 | if (n < 0) { | |
1686 | ret = n; | |
1687 | goto fail; | |
1688 | } | |
aad15de4 HR |
1689 | if (s->status == BLK_DATA || (!s->min_sparse && s->status == BLK_ZERO)) |
1690 | { | |
690c7301 KW |
1691 | allocated_done += n; |
1692 | qemu_progress_print(100.0 * allocated_done / s->allocated_sectors, | |
1693 | 0); | |
1694 | } | |
1695 | ||
aad15de4 HR |
1696 | if (s->status == BLK_DATA) { |
1697 | ret = convert_read(s, sector_num, n, buf); | |
1698 | if (ret < 0) { | |
1699 | error_report("error while reading sector %" PRId64 | |
1700 | ": %s", sector_num, strerror(-ret)); | |
1701 | goto fail; | |
1702 | } | |
1703 | } else if (!s->min_sparse && s->status == BLK_ZERO) { | |
1704 | n = MIN(n, s->buf_sectors); | |
1705 | memset(buf, 0, n * BDRV_SECTOR_SIZE); | |
1706 | s->status = BLK_DATA; | |
690c7301 KW |
1707 | } |
1708 | ||
1709 | ret = convert_write(s, sector_num, n, buf); | |
1710 | if (ret < 0) { | |
1711 | error_report("error while writing sector %" PRId64 | |
1712 | ": %s", sector_num, strerror(-ret)); | |
1713 | goto fail; | |
1714 | } | |
1715 | ||
1716 | sector_num += n; | |
1717 | } | |
1718 | ||
1719 | if (s->compressed) { | |
1720 | /* signal EOF to align */ | |
1721 | ret = blk_write_compressed(s->target, 0, NULL, 0); | |
1722 | if (ret < 0) { | |
1723 | goto fail; | |
1724 | } | |
1725 | } | |
1726 | ||
1727 | ret = 0; | |
1728 | fail: | |
1729 | qemu_vfree(buf); | |
1730 | return ret; | |
1731 | } | |
1732 | ||
ea2384d3 FB |
1733 | static int img_convert(int argc, char **argv) |
1734 | { | |
690c7301 | 1735 | int c, bs_n, bs_i, compress, cluster_sectors, skip_create; |
13c28af8 | 1736 | int64_t ret = 0; |
40055951 | 1737 | int progress = 0, flags, src_flags; |
ce099547 | 1738 | bool writethrough, src_writethrough; |
40055951 | 1739 | const char *fmt, *out_fmt, *cache, *src_cache, *out_baseimg, *out_filename; |
b50cbabc | 1740 | BlockDriver *drv, *proto_drv; |
26f54e9a | 1741 | BlockBackend **blk = NULL, *out_blk = NULL; |
c2abccec | 1742 | BlockDriverState **bs = NULL, *out_bs = NULL; |
690c7301 | 1743 | int64_t total_sectors; |
52bf1e72 | 1744 | int64_t *bs_sectors = NULL; |
f2521c90 | 1745 | size_t bufsectors = IO_BUF_SIZE / BDRV_SECTOR_SIZE; |
faea38e7 | 1746 | BlockDriverInfo bdi; |
83d0521a CL |
1747 | QemuOpts *opts = NULL; |
1748 | QemuOptsList *create_opts = NULL; | |
1749 | const char *out_baseimg_param; | |
efa84d43 | 1750 | char *options = NULL; |
51ef6727 | 1751 | const char *snapshot_name = NULL; |
a22f123c | 1752 | int min_sparse = 8; /* Need at least 4k of zeros for sparse detection */ |
f382d43a | 1753 | bool quiet = false; |
cc84d90f | 1754 | Error *local_err = NULL; |
ef80654d | 1755 | QemuOpts *sn_opts = NULL; |
690c7301 | 1756 | ImgConvertState state; |
eb769f74 | 1757 | bool image_opts = false; |
ea2384d3 FB |
1758 | |
1759 | fmt = NULL; | |
1760 | out_fmt = "raw"; | |
661a0f71 | 1761 | cache = "unsafe"; |
40055951 | 1762 | src_cache = BDRV_DEFAULT_CACHE; |
f58c7b35 | 1763 | out_baseimg = NULL; |
eec77d9e | 1764 | compress = 0; |
b2e10493 | 1765 | skip_create = 0; |
ea2384d3 | 1766 | for(;;) { |
3babeb15 DB |
1767 | static const struct option long_options[] = { |
1768 | {"help", no_argument, 0, 'h'}, | |
1769 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 1770 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
1771 | {0, 0, 0, 0} |
1772 | }; | |
1773 | c = getopt_long(argc, argv, "hf:O:B:ce6o:s:l:S:pt:T:qn", | |
1774 | long_options, NULL); | |
b8fb60da | 1775 | if (c == -1) { |
ea2384d3 | 1776 | break; |
b8fb60da | 1777 | } |
ea2384d3 | 1778 | switch(c) { |
ef87394c | 1779 | case '?': |
ea2384d3 FB |
1780 | case 'h': |
1781 | help(); | |
1782 | break; | |
1783 | case 'f': | |
1784 | fmt = optarg; | |
1785 | break; | |
1786 | case 'O': | |
1787 | out_fmt = optarg; | |
1788 | break; | |
f58c7b35 TS |
1789 | case 'B': |
1790 | out_baseimg = optarg; | |
1791 | break; | |
ea2384d3 | 1792 | case 'c': |
eec77d9e | 1793 | compress = 1; |
ea2384d3 FB |
1794 | break; |
1795 | case 'e': | |
9d42e15d | 1796 | error_report("option -e is deprecated, please use \'-o " |
eec77d9e | 1797 | "encryption\' instead!"); |
2dc8328b | 1798 | ret = -1; |
64bb01aa | 1799 | goto fail_getopt; |
ec36ba14 | 1800 | case '6': |
9d42e15d | 1801 | error_report("option -6 is deprecated, please use \'-o " |
eec77d9e | 1802 | "compat6\' instead!"); |
2dc8328b | 1803 | ret = -1; |
64bb01aa | 1804 | goto fail_getopt; |
efa84d43 | 1805 | case 'o': |
2dc8328b KW |
1806 | if (!is_valid_option_list(optarg)) { |
1807 | error_report("Invalid option list: %s", optarg); | |
1808 | ret = -1; | |
64bb01aa | 1809 | goto fail_getopt; |
2dc8328b KW |
1810 | } |
1811 | if (!options) { | |
1812 | options = g_strdup(optarg); | |
1813 | } else { | |
1814 | char *old_options = options; | |
1815 | options = g_strdup_printf("%s,%s", options, optarg); | |
1816 | g_free(old_options); | |
1817 | } | |
efa84d43 | 1818 | break; |
51ef6727 | 1819 | case 's': |
1820 | snapshot_name = optarg; | |
1821 | break; | |
ef80654d WX |
1822 | case 'l': |
1823 | if (strstart(optarg, SNAPSHOT_OPT_BASE, NULL)) { | |
70b94331 MA |
1824 | sn_opts = qemu_opts_parse_noisily(&internal_snapshot_opts, |
1825 | optarg, false); | |
ef80654d WX |
1826 | if (!sn_opts) { |
1827 | error_report("Failed in parsing snapshot param '%s'", | |
1828 | optarg); | |
2dc8328b | 1829 | ret = -1; |
64bb01aa | 1830 | goto fail_getopt; |
ef80654d WX |
1831 | } |
1832 | } else { | |
1833 | snapshot_name = optarg; | |
1834 | } | |
1835 | break; | |
a22f123c KW |
1836 | case 'S': |
1837 | { | |
1838 | int64_t sval; | |
e36b3695 | 1839 | char *end; |
4677bb40 | 1840 | sval = qemu_strtosz_suffix(optarg, &end, QEMU_STRTOSZ_DEFSUFFIX_B); |
e36b3695 | 1841 | if (sval < 0 || *end) { |
a22f123c | 1842 | error_report("Invalid minimum zero buffer size for sparse output specified"); |
2dc8328b | 1843 | ret = -1; |
64bb01aa | 1844 | goto fail_getopt; |
a22f123c KW |
1845 | } |
1846 | ||
1847 | min_sparse = sval / BDRV_SECTOR_SIZE; | |
1848 | break; | |
1849 | } | |
6b837bc4 JS |
1850 | case 'p': |
1851 | progress = 1; | |
1852 | break; | |
661a0f71 FS |
1853 | case 't': |
1854 | cache = optarg; | |
1855 | break; | |
40055951 HR |
1856 | case 'T': |
1857 | src_cache = optarg; | |
1858 | break; | |
f382d43a MR |
1859 | case 'q': |
1860 | quiet = true; | |
1861 | break; | |
b2e10493 AD |
1862 | case 'n': |
1863 | skip_create = 1; | |
1864 | break; | |
3babeb15 DB |
1865 | case OPTION_OBJECT: |
1866 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
1867 | optarg, true); | |
1868 | if (!opts) { | |
1869 | goto fail_getopt; | |
1870 | } | |
1871 | break; | |
eb769f74 DB |
1872 | case OPTION_IMAGE_OPTS: |
1873 | image_opts = true; | |
1874 | break; | |
ea2384d3 FB |
1875 | } |
1876 | } | |
3b46e624 | 1877 | |
3babeb15 DB |
1878 | if (qemu_opts_foreach(&qemu_object_opts, |
1879 | user_creatable_add_opts_foreach, | |
51b9b478 | 1880 | NULL, NULL)) { |
3babeb15 DB |
1881 | goto fail_getopt; |
1882 | } | |
1883 | ||
64bb01aa | 1884 | /* Initialize before goto out */ |
f382d43a MR |
1885 | if (quiet) { |
1886 | progress = 0; | |
1887 | } | |
64bb01aa KW |
1888 | qemu_progress_init(progress, 1.0); |
1889 | ||
926c2d23 | 1890 | bs_n = argc - optind - 1; |
a283cb6e | 1891 | out_filename = bs_n >= 1 ? argv[argc - 1] : NULL; |
f58c7b35 | 1892 | |
2dc8328b | 1893 | if (options && has_help_option(options)) { |
4ac8aacd JS |
1894 | ret = print_block_option_help(out_filename, out_fmt); |
1895 | goto out; | |
1896 | } | |
1897 | ||
a283cb6e | 1898 | if (bs_n < 1) { |
ac1307ab | 1899 | error_exit("Must specify image file name"); |
a283cb6e KW |
1900 | } |
1901 | ||
1902 | ||
c2abccec | 1903 | if (bs_n > 1 && out_baseimg) { |
15654a6d JS |
1904 | error_report("-B makes no sense when concatenating multiple input " |
1905 | "images"); | |
31ca34b8 JS |
1906 | ret = -1; |
1907 | goto out; | |
c2abccec | 1908 | } |
f8111c24 | 1909 | |
ce099547 KW |
1910 | src_flags = 0; |
1911 | ret = bdrv_parse_cache_mode(src_cache, &src_flags, &src_writethrough); | |
40055951 HR |
1912 | if (ret < 0) { |
1913 | error_report("Invalid source cache option: %s", src_cache); | |
1914 | goto out; | |
1915 | } | |
1916 | ||
6b837bc4 JS |
1917 | qemu_progress_print(0, 100); |
1918 | ||
26f54e9a | 1919 | blk = g_new0(BlockBackend *, bs_n); |
d739f1c4 | 1920 | bs = g_new0(BlockDriverState *, bs_n); |
52bf1e72 | 1921 | bs_sectors = g_new(int64_t, bs_n); |
926c2d23 AZ |
1922 | |
1923 | total_sectors = 0; | |
1924 | for (bs_i = 0; bs_i < bs_n; bs_i++) { | |
efaa7c4e | 1925 | blk[bs_i] = img_open(image_opts, argv[optind + bs_i], |
ce099547 | 1926 | fmt, src_flags, src_writethrough, quiet); |
7e7d56d9 | 1927 | if (!blk[bs_i]) { |
c2abccec MK |
1928 | ret = -1; |
1929 | goto out; | |
1930 | } | |
7e7d56d9 | 1931 | bs[bs_i] = blk_bs(blk[bs_i]); |
f1d3cd79 | 1932 | bs_sectors[bs_i] = blk_nb_sectors(blk[bs_i]); |
52bf1e72 MA |
1933 | if (bs_sectors[bs_i] < 0) { |
1934 | error_report("Could not get size of %s: %s", | |
1935 | argv[optind + bs_i], strerror(-bs_sectors[bs_i])); | |
1936 | ret = -1; | |
1937 | goto out; | |
1938 | } | |
d739f1c4 | 1939 | total_sectors += bs_sectors[bs_i]; |
926c2d23 | 1940 | } |
ea2384d3 | 1941 | |
ef80654d WX |
1942 | if (sn_opts) { |
1943 | ret = bdrv_snapshot_load_tmp(bs[0], | |
1944 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_ID), | |
1945 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_NAME), | |
1946 | &local_err); | |
1947 | } else if (snapshot_name != NULL) { | |
51ef6727 | 1948 | if (bs_n > 1) { |
6daf194d | 1949 | error_report("No support for concatenating multiple snapshot"); |
51ef6727 | 1950 | ret = -1; |
1951 | goto out; | |
1952 | } | |
7b4c4781 WX |
1953 | |
1954 | bdrv_snapshot_load_tmp_by_id_or_name(bs[0], snapshot_name, &local_err); | |
ef80654d | 1955 | } |
84d18f06 | 1956 | if (local_err) { |
c29b77f9 | 1957 | error_reportf_err(local_err, "Failed to load snapshot: "); |
ef80654d WX |
1958 | ret = -1; |
1959 | goto out; | |
51ef6727 | 1960 | } |
1961 | ||
efa84d43 | 1962 | /* Find driver and parse its options */ |
ea2384d3 | 1963 | drv = bdrv_find_format(out_fmt); |
c2abccec | 1964 | if (!drv) { |
15654a6d | 1965 | error_report("Unknown file format '%s'", out_fmt); |
c2abccec MK |
1966 | ret = -1; |
1967 | goto out; | |
1968 | } | |
efa84d43 | 1969 | |
b65a5e12 | 1970 | proto_drv = bdrv_find_protocol(out_filename, true, &local_err); |
c2abccec | 1971 | if (!proto_drv) { |
2867ce4a | 1972 | error_report_err(local_err); |
c2abccec MK |
1973 | ret = -1; |
1974 | goto out; | |
1975 | } | |
b50cbabc | 1976 | |
2e024cde HR |
1977 | if (!skip_create) { |
1978 | if (!drv->create_opts) { | |
1979 | error_report("Format driver '%s' does not support image creation", | |
1980 | drv->format_name); | |
1981 | ret = -1; | |
1982 | goto out; | |
1983 | } | |
f75613cf | 1984 | |
2e024cde HR |
1985 | if (!proto_drv->create_opts) { |
1986 | error_report("Protocol driver '%s' does not support image creation", | |
1987 | proto_drv->format_name); | |
1988 | ret = -1; | |
1989 | goto out; | |
1990 | } | |
f75613cf | 1991 | |
2e024cde HR |
1992 | create_opts = qemu_opts_append(create_opts, drv->create_opts); |
1993 | create_opts = qemu_opts_append(create_opts, proto_drv->create_opts); | |
db08adf5 | 1994 | |
2e024cde | 1995 | opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); |
dc523cd3 MA |
1996 | if (options) { |
1997 | qemu_opts_do_parse(opts, options, NULL, &local_err); | |
1998 | if (local_err) { | |
97a2ca7a | 1999 | error_report_err(local_err); |
dc523cd3 MA |
2000 | ret = -1; |
2001 | goto out; | |
2002 | } | |
2e024cde | 2003 | } |
efa84d43 | 2004 | |
39101f25 MA |
2005 | qemu_opt_set_number(opts, BLOCK_OPT_SIZE, total_sectors * 512, |
2006 | &error_abort); | |
2e024cde HR |
2007 | ret = add_old_style_options(out_fmt, opts, out_baseimg, NULL); |
2008 | if (ret < 0) { | |
2009 | goto out; | |
2010 | } | |
c2abccec | 2011 | } |
efa84d43 | 2012 | |
a18953fb | 2013 | /* Get backing file name if -o backing_file was used */ |
83d0521a | 2014 | out_baseimg_param = qemu_opt_get(opts, BLOCK_OPT_BACKING_FILE); |
a18953fb | 2015 | if (out_baseimg_param) { |
83d0521a | 2016 | out_baseimg = out_baseimg_param; |
a18953fb KW |
2017 | } |
2018 | ||
efa84d43 | 2019 | /* Check if compression is supported */ |
eec77d9e | 2020 | if (compress) { |
83d0521a CL |
2021 | bool encryption = |
2022 | qemu_opt_get_bool(opts, BLOCK_OPT_ENCRYPT, false); | |
2023 | const char *preallocation = | |
2024 | qemu_opt_get(opts, BLOCK_OPT_PREALLOC); | |
efa84d43 KW |
2025 | |
2026 | if (!drv->bdrv_write_compressed) { | |
15654a6d | 2027 | error_report("Compression not supported for this file format"); |
c2abccec MK |
2028 | ret = -1; |
2029 | goto out; | |
efa84d43 KW |
2030 | } |
2031 | ||
83d0521a | 2032 | if (encryption) { |
15654a6d JS |
2033 | error_report("Compression and encryption not supported at " |
2034 | "the same time"); | |
c2abccec MK |
2035 | ret = -1; |
2036 | goto out; | |
efa84d43 | 2037 | } |
41521fa4 | 2038 | |
83d0521a CL |
2039 | if (preallocation |
2040 | && strcmp(preallocation, "off")) | |
41521fa4 KW |
2041 | { |
2042 | error_report("Compression and preallocation not supported at " | |
2043 | "the same time"); | |
2044 | ret = -1; | |
2045 | goto out; | |
2046 | } | |
efa84d43 KW |
2047 | } |
2048 | ||
b2e10493 AD |
2049 | if (!skip_create) { |
2050 | /* Create the new image */ | |
c282e1fd | 2051 | ret = bdrv_create(drv, out_filename, opts, &local_err); |
b2e10493 | 2052 | if (ret < 0) { |
c29b77f9 MA |
2053 | error_reportf_err(local_err, "%s: error while converting %s: ", |
2054 | out_filename, out_fmt); | |
b2e10493 | 2055 | goto out; |
ea2384d3 FB |
2056 | } |
2057 | } | |
3b46e624 | 2058 | |
5a37b60a | 2059 | flags = min_sparse ? (BDRV_O_RDWR | BDRV_O_UNMAP) : BDRV_O_RDWR; |
ce099547 | 2060 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); |
661a0f71 FS |
2061 | if (ret < 0) { |
2062 | error_report("Invalid cache option: %s", cache); | |
bb9cd2ee | 2063 | goto out; |
661a0f71 FS |
2064 | } |
2065 | ||
eb769f74 DB |
2066 | /* XXX we should allow --image-opts to trigger use of |
2067 | * img_open() here, but then we have trouble with | |
2068 | * the bdrv_create() call which takes different params. | |
2069 | * Not critical right now, so fix can wait... | |
2070 | */ | |
ce099547 | 2071 | out_blk = img_open_file(out_filename, out_fmt, flags, writethrough, quiet); |
7e7d56d9 | 2072 | if (!out_blk) { |
c2abccec MK |
2073 | ret = -1; |
2074 | goto out; | |
2075 | } | |
7e7d56d9 | 2076 | out_bs = blk_bs(out_blk); |
ea2384d3 | 2077 | |
f2521c90 PL |
2078 | /* increase bufsectors from the default 4096 (2M) if opt_transfer_length |
2079 | * or discard_alignment of the out_bs is greater. Limit to 32768 (16MB) | |
2080 | * as maximum. */ | |
2081 | bufsectors = MIN(32768, | |
2082 | MAX(bufsectors, MAX(out_bs->bl.opt_transfer_length, | |
2083 | out_bs->bl.discard_alignment)) | |
2084 | ); | |
2085 | ||
b2e10493 | 2086 | if (skip_create) { |
f1d3cd79 | 2087 | int64_t output_sectors = blk_nb_sectors(out_blk); |
43716fa8 | 2088 | if (output_sectors < 0) { |
eec5eb42 | 2089 | error_report("unable to get output image length: %s", |
43716fa8 | 2090 | strerror(-output_sectors)); |
b2e10493 AD |
2091 | ret = -1; |
2092 | goto out; | |
43716fa8 | 2093 | } else if (output_sectors < total_sectors) { |
b2e10493 AD |
2094 | error_report("output file is smaller than input file"); |
2095 | ret = -1; | |
2096 | goto out; | |
2097 | } | |
2098 | } | |
2099 | ||
24f833cd PL |
2100 | cluster_sectors = 0; |
2101 | ret = bdrv_get_info(out_bs, &bdi); | |
2102 | if (ret < 0) { | |
2103 | if (compress) { | |
15654a6d | 2104 | error_report("could not get block driver info"); |
c2abccec MK |
2105 | goto out; |
2106 | } | |
24f833cd | 2107 | } else { |
85f49cad | 2108 | compress = compress || bdi.needs_compressed_writes; |
24f833cd PL |
2109 | cluster_sectors = bdi.cluster_size / BDRV_SECTOR_SIZE; |
2110 | } | |
2111 | ||
690c7301 KW |
2112 | state = (ImgConvertState) { |
2113 | .src = blk, | |
2114 | .src_sectors = bs_sectors, | |
2115 | .src_num = bs_n, | |
2116 | .total_sectors = total_sectors, | |
2117 | .target = out_blk, | |
2118 | .compressed = compress, | |
2119 | .target_has_backing = (bool) out_baseimg, | |
2120 | .min_sparse = min_sparse, | |
2121 | .cluster_sectors = cluster_sectors, | |
2122 | .buf_sectors = bufsectors, | |
2123 | }; | |
2124 | ret = convert_do_copy(&state); | |
802c3d4c | 2125 | |
c2abccec | 2126 | out: |
13c28af8 PL |
2127 | if (!ret) { |
2128 | qemu_progress_print(100, 0); | |
2129 | } | |
6b837bc4 | 2130 | qemu_progress_end(); |
83d0521a CL |
2131 | qemu_opts_del(opts); |
2132 | qemu_opts_free(create_opts); | |
fbf28a43 | 2133 | qemu_opts_del(sn_opts); |
26f54e9a | 2134 | blk_unref(out_blk); |
9ba10c95 | 2135 | g_free(bs); |
26f54e9a MA |
2136 | if (blk) { |
2137 | for (bs_i = 0; bs_i < bs_n; bs_i++) { | |
2138 | blk_unref(blk[bs_i]); | |
2139 | } | |
2140 | g_free(blk); | |
2141 | } | |
d739f1c4 | 2142 | g_free(bs_sectors); |
64bb01aa KW |
2143 | fail_getopt: |
2144 | g_free(options); | |
2145 | ||
c2abccec MK |
2146 | if (ret) { |
2147 | return 1; | |
2148 | } | |
ea2384d3 FB |
2149 | return 0; |
2150 | } | |
2151 | ||
57d1a2b6 | 2152 | |
faea38e7 FB |
2153 | static void dump_snapshots(BlockDriverState *bs) |
2154 | { | |
2155 | QEMUSnapshotInfo *sn_tab, *sn; | |
2156 | int nb_sns, i; | |
faea38e7 FB |
2157 | |
2158 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
2159 | if (nb_sns <= 0) | |
2160 | return; | |
2161 | printf("Snapshot list:\n"); | |
5b917044 WX |
2162 | bdrv_snapshot_dump(fprintf, stdout, NULL); |
2163 | printf("\n"); | |
faea38e7 FB |
2164 | for(i = 0; i < nb_sns; i++) { |
2165 | sn = &sn_tab[i]; | |
5b917044 WX |
2166 | bdrv_snapshot_dump(fprintf, stdout, sn); |
2167 | printf("\n"); | |
faea38e7 | 2168 | } |
7267c094 | 2169 | g_free(sn_tab); |
faea38e7 FB |
2170 | } |
2171 | ||
9699bf0d SH |
2172 | static void dump_json_image_info_list(ImageInfoList *list) |
2173 | { | |
4399c438 | 2174 | Error *local_err = NULL; |
9699bf0d SH |
2175 | QString *str; |
2176 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
2177 | QObject *obj; | |
51e72bc1 EB |
2178 | visit_type_ImageInfoList(qmp_output_get_visitor(ov), NULL, &list, |
2179 | &local_err); | |
9699bf0d SH |
2180 | obj = qmp_output_get_qobject(ov); |
2181 | str = qobject_to_json_pretty(obj); | |
2182 | assert(str != NULL); | |
2183 | printf("%s\n", qstring_get_str(str)); | |
2184 | qobject_decref(obj); | |
2185 | qmp_output_visitor_cleanup(ov); | |
2186 | QDECREF(str); | |
2187 | } | |
2188 | ||
c054b3fd BC |
2189 | static void dump_json_image_info(ImageInfo *info) |
2190 | { | |
4399c438 | 2191 | Error *local_err = NULL; |
c054b3fd BC |
2192 | QString *str; |
2193 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
2194 | QObject *obj; | |
51e72bc1 | 2195 | visit_type_ImageInfo(qmp_output_get_visitor(ov), NULL, &info, &local_err); |
c054b3fd BC |
2196 | obj = qmp_output_get_qobject(ov); |
2197 | str = qobject_to_json_pretty(obj); | |
2198 | assert(str != NULL); | |
2199 | printf("%s\n", qstring_get_str(str)); | |
2200 | qobject_decref(obj); | |
2201 | qmp_output_visitor_cleanup(ov); | |
2202 | QDECREF(str); | |
2203 | } | |
2204 | ||
9699bf0d SH |
2205 | static void dump_human_image_info_list(ImageInfoList *list) |
2206 | { | |
2207 | ImageInfoList *elem; | |
2208 | bool delim = false; | |
2209 | ||
2210 | for (elem = list; elem; elem = elem->next) { | |
2211 | if (delim) { | |
2212 | printf("\n"); | |
2213 | } | |
2214 | delim = true; | |
2215 | ||
5b917044 | 2216 | bdrv_image_info_dump(fprintf, stdout, elem->value); |
9699bf0d SH |
2217 | } |
2218 | } | |
2219 | ||
2220 | static gboolean str_equal_func(gconstpointer a, gconstpointer b) | |
2221 | { | |
2222 | return strcmp(a, b) == 0; | |
2223 | } | |
2224 | ||
2225 | /** | |
2226 | * Open an image file chain and return an ImageInfoList | |
2227 | * | |
2228 | * @filename: topmost image filename | |
2229 | * @fmt: topmost image format (may be NULL to autodetect) | |
2230 | * @chain: true - enumerate entire backing file chain | |
2231 | * false - only topmost image file | |
2232 | * | |
2233 | * Returns a list of ImageInfo objects or NULL if there was an error opening an | |
2234 | * image file. If there was an error a message will have been printed to | |
2235 | * stderr. | |
2236 | */ | |
eb769f74 DB |
2237 | static ImageInfoList *collect_image_info_list(bool image_opts, |
2238 | const char *filename, | |
9699bf0d SH |
2239 | const char *fmt, |
2240 | bool chain) | |
2241 | { | |
2242 | ImageInfoList *head = NULL; | |
2243 | ImageInfoList **last = &head; | |
2244 | GHashTable *filenames; | |
43526ec8 | 2245 | Error *err = NULL; |
9699bf0d SH |
2246 | |
2247 | filenames = g_hash_table_new_full(g_str_hash, str_equal_func, NULL, NULL); | |
2248 | ||
2249 | while (filename) { | |
26f54e9a | 2250 | BlockBackend *blk; |
9699bf0d SH |
2251 | BlockDriverState *bs; |
2252 | ImageInfo *info; | |
2253 | ImageInfoList *elem; | |
2254 | ||
2255 | if (g_hash_table_lookup_extended(filenames, filename, NULL, NULL)) { | |
2256 | error_report("Backing file '%s' creates an infinite loop.", | |
2257 | filename); | |
2258 | goto err; | |
2259 | } | |
2260 | g_hash_table_insert(filenames, (gpointer)filename, NULL); | |
2261 | ||
efaa7c4e | 2262 | blk = img_open(image_opts, filename, fmt, |
ce099547 | 2263 | BDRV_O_NO_BACKING | BDRV_O_NO_IO, false, false); |
7e7d56d9 | 2264 | if (!blk) { |
9699bf0d SH |
2265 | goto err; |
2266 | } | |
7e7d56d9 | 2267 | bs = blk_bs(blk); |
9699bf0d | 2268 | |
43526ec8 | 2269 | bdrv_query_image_info(bs, &info, &err); |
84d18f06 | 2270 | if (err) { |
565f65d2 | 2271 | error_report_err(err); |
26f54e9a | 2272 | blk_unref(blk); |
43526ec8 | 2273 | goto err; |
fb0ed453 | 2274 | } |
9699bf0d SH |
2275 | |
2276 | elem = g_new0(ImageInfoList, 1); | |
2277 | elem->value = info; | |
2278 | *last = elem; | |
2279 | last = &elem->next; | |
2280 | ||
26f54e9a | 2281 | blk_unref(blk); |
9699bf0d SH |
2282 | |
2283 | filename = fmt = NULL; | |
2284 | if (chain) { | |
2285 | if (info->has_full_backing_filename) { | |
2286 | filename = info->full_backing_filename; | |
2287 | } else if (info->has_backing_filename) { | |
92d617ab JS |
2288 | error_report("Could not determine absolute backing filename," |
2289 | " but backing filename '%s' present", | |
2290 | info->backing_filename); | |
2291 | goto err; | |
9699bf0d SH |
2292 | } |
2293 | if (info->has_backing_filename_format) { | |
2294 | fmt = info->backing_filename_format; | |
2295 | } | |
2296 | } | |
2297 | } | |
2298 | g_hash_table_destroy(filenames); | |
2299 | return head; | |
2300 | ||
2301 | err: | |
2302 | qapi_free_ImageInfoList(head); | |
2303 | g_hash_table_destroy(filenames); | |
2304 | return NULL; | |
2305 | } | |
2306 | ||
c054b3fd BC |
2307 | static int img_info(int argc, char **argv) |
2308 | { | |
2309 | int c; | |
2310 | OutputFormat output_format = OFORMAT_HUMAN; | |
9699bf0d | 2311 | bool chain = false; |
c054b3fd | 2312 | const char *filename, *fmt, *output; |
9699bf0d | 2313 | ImageInfoList *list; |
eb769f74 | 2314 | bool image_opts = false; |
c054b3fd | 2315 | |
ea2384d3 | 2316 | fmt = NULL; |
c054b3fd | 2317 | output = NULL; |
ea2384d3 | 2318 | for(;;) { |
c054b3fd BC |
2319 | int option_index = 0; |
2320 | static const struct option long_options[] = { | |
2321 | {"help", no_argument, 0, 'h'}, | |
2322 | {"format", required_argument, 0, 'f'}, | |
2323 | {"output", required_argument, 0, OPTION_OUTPUT}, | |
9699bf0d | 2324 | {"backing-chain", no_argument, 0, OPTION_BACKING_CHAIN}, |
3babeb15 | 2325 | {"object", required_argument, 0, OPTION_OBJECT}, |
eb769f74 | 2326 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
c054b3fd BC |
2327 | {0, 0, 0, 0} |
2328 | }; | |
2329 | c = getopt_long(argc, argv, "f:h", | |
2330 | long_options, &option_index); | |
b8fb60da | 2331 | if (c == -1) { |
ea2384d3 | 2332 | break; |
b8fb60da | 2333 | } |
ea2384d3 | 2334 | switch(c) { |
ef87394c | 2335 | case '?': |
ea2384d3 FB |
2336 | case 'h': |
2337 | help(); | |
2338 | break; | |
2339 | case 'f': | |
2340 | fmt = optarg; | |
2341 | break; | |
c054b3fd BC |
2342 | case OPTION_OUTPUT: |
2343 | output = optarg; | |
2344 | break; | |
9699bf0d SH |
2345 | case OPTION_BACKING_CHAIN: |
2346 | chain = true; | |
2347 | break; | |
3babeb15 DB |
2348 | case OPTION_OBJECT: { |
2349 | QemuOpts *opts; | |
2350 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
2351 | optarg, true); | |
2352 | if (!opts) { | |
2353 | return 1; | |
2354 | } | |
2355 | } break; | |
eb769f74 DB |
2356 | case OPTION_IMAGE_OPTS: |
2357 | image_opts = true; | |
2358 | break; | |
ea2384d3 FB |
2359 | } |
2360 | } | |
fc11eb26 | 2361 | if (optind != argc - 1) { |
ac1307ab | 2362 | error_exit("Expecting one image file name"); |
b8fb60da | 2363 | } |
ea2384d3 FB |
2364 | filename = argv[optind++]; |
2365 | ||
c054b3fd BC |
2366 | if (output && !strcmp(output, "json")) { |
2367 | output_format = OFORMAT_JSON; | |
2368 | } else if (output && !strcmp(output, "human")) { | |
2369 | output_format = OFORMAT_HUMAN; | |
2370 | } else if (output) { | |
2371 | error_report("--output must be used with human or json as argument."); | |
c2abccec MK |
2372 | return 1; |
2373 | } | |
c054b3fd | 2374 | |
3babeb15 DB |
2375 | if (qemu_opts_foreach(&qemu_object_opts, |
2376 | user_creatable_add_opts_foreach, | |
51b9b478 | 2377 | NULL, NULL)) { |
3babeb15 DB |
2378 | return 1; |
2379 | } | |
2380 | ||
eb769f74 | 2381 | list = collect_image_info_list(image_opts, filename, fmt, chain); |
9699bf0d | 2382 | if (!list) { |
c2abccec | 2383 | return 1; |
faea38e7 | 2384 | } |
c054b3fd | 2385 | |
c054b3fd BC |
2386 | switch (output_format) { |
2387 | case OFORMAT_HUMAN: | |
9699bf0d | 2388 | dump_human_image_info_list(list); |
c054b3fd BC |
2389 | break; |
2390 | case OFORMAT_JSON: | |
9699bf0d SH |
2391 | if (chain) { |
2392 | dump_json_image_info_list(list); | |
2393 | } else { | |
2394 | dump_json_image_info(list->value); | |
2395 | } | |
c054b3fd | 2396 | break; |
faea38e7 | 2397 | } |
c054b3fd | 2398 | |
9699bf0d | 2399 | qapi_free_ImageInfoList(list); |
ea2384d3 FB |
2400 | return 0; |
2401 | } | |
2402 | ||
4c93a13b PB |
2403 | static void dump_map_entry(OutputFormat output_format, MapEntry *e, |
2404 | MapEntry *next) | |
2405 | { | |
2406 | switch (output_format) { | |
2407 | case OFORMAT_HUMAN: | |
16b0d555 | 2408 | if (e->data && !e->has_offset) { |
4c93a13b PB |
2409 | error_report("File contains external, encrypted or compressed clusters."); |
2410 | exit(1); | |
2411 | } | |
16b0d555 | 2412 | if (e->data && !e->zero) { |
4c93a13b | 2413 | printf("%#-16"PRIx64"%#-16"PRIx64"%#-16"PRIx64"%s\n", |
16b0d555 FZ |
2414 | e->start, e->length, |
2415 | e->has_offset ? e->offset : 0, | |
2416 | e->has_filename ? e->filename : ""); | |
4c93a13b PB |
2417 | } |
2418 | /* This format ignores the distinction between 0, ZERO and ZERO|DATA. | |
2419 | * Modify the flags here to allow more coalescing. | |
2420 | */ | |
16b0d555 FZ |
2421 | if (next && (!next->data || next->zero)) { |
2422 | next->data = false; | |
2423 | next->zero = true; | |
4c93a13b PB |
2424 | } |
2425 | break; | |
2426 | case OFORMAT_JSON: | |
16b0d555 FZ |
2427 | printf("%s{ \"start\": %"PRId64", \"length\": %"PRId64"," |
2428 | " \"depth\": %"PRId64", \"zero\": %s, \"data\": %s", | |
4c93a13b PB |
2429 | (e->start == 0 ? "[" : ",\n"), |
2430 | e->start, e->length, e->depth, | |
16b0d555 FZ |
2431 | e->zero ? "true" : "false", |
2432 | e->data ? "true" : "false"); | |
2433 | if (e->has_offset) { | |
c745bfb4 | 2434 | printf(", \"offset\": %"PRId64"", e->offset); |
4c93a13b PB |
2435 | } |
2436 | putchar('}'); | |
2437 | ||
2438 | if (!next) { | |
2439 | printf("]\n"); | |
2440 | } | |
2441 | break; | |
2442 | } | |
2443 | } | |
2444 | ||
2445 | static int get_block_status(BlockDriverState *bs, int64_t sector_num, | |
2446 | int nb_sectors, MapEntry *e) | |
2447 | { | |
2448 | int64_t ret; | |
2449 | int depth; | |
67a0fd2a | 2450 | BlockDriverState *file; |
2875645b | 2451 | bool has_offset; |
4c93a13b PB |
2452 | |
2453 | /* As an optimization, we could cache the current range of unallocated | |
2454 | * clusters in each file of the chain, and avoid querying the same | |
2455 | * range repeatedly. | |
2456 | */ | |
2457 | ||
2458 | depth = 0; | |
2459 | for (;;) { | |
67a0fd2a FZ |
2460 | ret = bdrv_get_block_status(bs, sector_num, nb_sectors, &nb_sectors, |
2461 | &file); | |
4c93a13b PB |
2462 | if (ret < 0) { |
2463 | return ret; | |
2464 | } | |
2465 | assert(nb_sectors); | |
2466 | if (ret & (BDRV_BLOCK_ZERO|BDRV_BLOCK_DATA)) { | |
2467 | break; | |
2468 | } | |
760e0063 | 2469 | bs = backing_bs(bs); |
4c93a13b PB |
2470 | if (bs == NULL) { |
2471 | ret = 0; | |
2472 | break; | |
2473 | } | |
2474 | ||
2475 | depth++; | |
2476 | } | |
2477 | ||
2875645b JS |
2478 | has_offset = !!(ret & BDRV_BLOCK_OFFSET_VALID); |
2479 | ||
2480 | *e = (MapEntry) { | |
2481 | .start = sector_num * BDRV_SECTOR_SIZE, | |
2482 | .length = nb_sectors * BDRV_SECTOR_SIZE, | |
2483 | .data = !!(ret & BDRV_BLOCK_DATA), | |
2484 | .zero = !!(ret & BDRV_BLOCK_ZERO), | |
2485 | .offset = ret & BDRV_BLOCK_OFFSET_MASK, | |
2486 | .has_offset = has_offset, | |
2487 | .depth = depth, | |
2488 | .has_filename = file && has_offset, | |
2489 | .filename = file && has_offset ? file->filename : NULL, | |
2490 | }; | |
2491 | ||
4c93a13b PB |
2492 | return 0; |
2493 | } | |
2494 | ||
16b0d555 FZ |
2495 | static inline bool entry_mergeable(const MapEntry *curr, const MapEntry *next) |
2496 | { | |
2497 | if (curr->length == 0) { | |
2498 | return false; | |
2499 | } | |
2500 | if (curr->zero != next->zero || | |
2501 | curr->data != next->data || | |
2502 | curr->depth != next->depth || | |
2503 | curr->has_filename != next->has_filename || | |
2504 | curr->has_offset != next->has_offset) { | |
2505 | return false; | |
2506 | } | |
2507 | if (curr->has_filename && strcmp(curr->filename, next->filename)) { | |
2508 | return false; | |
2509 | } | |
2510 | if (curr->has_offset && curr->offset + curr->length != next->offset) { | |
2511 | return false; | |
2512 | } | |
2513 | return true; | |
2514 | } | |
2515 | ||
4c93a13b PB |
2516 | static int img_map(int argc, char **argv) |
2517 | { | |
2518 | int c; | |
2519 | OutputFormat output_format = OFORMAT_HUMAN; | |
26f54e9a | 2520 | BlockBackend *blk; |
4c93a13b PB |
2521 | BlockDriverState *bs; |
2522 | const char *filename, *fmt, *output; | |
2523 | int64_t length; | |
2524 | MapEntry curr = { .length = 0 }, next; | |
2525 | int ret = 0; | |
eb769f74 | 2526 | bool image_opts = false; |
4c93a13b PB |
2527 | |
2528 | fmt = NULL; | |
2529 | output = NULL; | |
2530 | for (;;) { | |
2531 | int option_index = 0; | |
2532 | static const struct option long_options[] = { | |
2533 | {"help", no_argument, 0, 'h'}, | |
2534 | {"format", required_argument, 0, 'f'}, | |
2535 | {"output", required_argument, 0, OPTION_OUTPUT}, | |
3babeb15 | 2536 | {"object", required_argument, 0, OPTION_OBJECT}, |
eb769f74 | 2537 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
4c93a13b PB |
2538 | {0, 0, 0, 0} |
2539 | }; | |
2540 | c = getopt_long(argc, argv, "f:h", | |
2541 | long_options, &option_index); | |
2542 | if (c == -1) { | |
2543 | break; | |
2544 | } | |
2545 | switch (c) { | |
2546 | case '?': | |
2547 | case 'h': | |
2548 | help(); | |
2549 | break; | |
2550 | case 'f': | |
2551 | fmt = optarg; | |
2552 | break; | |
2553 | case OPTION_OUTPUT: | |
2554 | output = optarg; | |
2555 | break; | |
3babeb15 DB |
2556 | case OPTION_OBJECT: { |
2557 | QemuOpts *opts; | |
2558 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
2559 | optarg, true); | |
2560 | if (!opts) { | |
2561 | return 1; | |
2562 | } | |
2563 | } break; | |
eb769f74 DB |
2564 | case OPTION_IMAGE_OPTS: |
2565 | image_opts = true; | |
2566 | break; | |
4c93a13b PB |
2567 | } |
2568 | } | |
ac1307ab FZ |
2569 | if (optind != argc - 1) { |
2570 | error_exit("Expecting one image file name"); | |
4c93a13b | 2571 | } |
ac1307ab | 2572 | filename = argv[optind]; |
4c93a13b PB |
2573 | |
2574 | if (output && !strcmp(output, "json")) { | |
2575 | output_format = OFORMAT_JSON; | |
2576 | } else if (output && !strcmp(output, "human")) { | |
2577 | output_format = OFORMAT_HUMAN; | |
2578 | } else if (output) { | |
2579 | error_report("--output must be used with human or json as argument."); | |
2580 | return 1; | |
2581 | } | |
2582 | ||
3babeb15 DB |
2583 | if (qemu_opts_foreach(&qemu_object_opts, |
2584 | user_creatable_add_opts_foreach, | |
51b9b478 | 2585 | NULL, NULL)) { |
3babeb15 DB |
2586 | return 1; |
2587 | } | |
2588 | ||
ce099547 | 2589 | blk = img_open(image_opts, filename, fmt, 0, false, false); |
7e7d56d9 MA |
2590 | if (!blk) { |
2591 | return 1; | |
4c93a13b | 2592 | } |
7e7d56d9 | 2593 | bs = blk_bs(blk); |
4c93a13b PB |
2594 | |
2595 | if (output_format == OFORMAT_HUMAN) { | |
2596 | printf("%-16s%-16s%-16s%s\n", "Offset", "Length", "Mapped to", "File"); | |
2597 | } | |
2598 | ||
f1d3cd79 | 2599 | length = blk_getlength(blk); |
4c93a13b PB |
2600 | while (curr.start + curr.length < length) { |
2601 | int64_t nsectors_left; | |
2602 | int64_t sector_num; | |
2603 | int n; | |
2604 | ||
2605 | sector_num = (curr.start + curr.length) >> BDRV_SECTOR_BITS; | |
2606 | ||
2607 | /* Probe up to 1 GiB at a time. */ | |
2608 | nsectors_left = DIV_ROUND_UP(length, BDRV_SECTOR_SIZE) - sector_num; | |
2609 | n = MIN(1 << (30 - BDRV_SECTOR_BITS), nsectors_left); | |
2610 | ret = get_block_status(bs, sector_num, n, &next); | |
2611 | ||
2612 | if (ret < 0) { | |
2613 | error_report("Could not read file metadata: %s", strerror(-ret)); | |
2614 | goto out; | |
2615 | } | |
2616 | ||
16b0d555 | 2617 | if (entry_mergeable(&curr, &next)) { |
4c93a13b PB |
2618 | curr.length += next.length; |
2619 | continue; | |
2620 | } | |
2621 | ||
2622 | if (curr.length > 0) { | |
2623 | dump_map_entry(output_format, &curr, &next); | |
2624 | } | |
2625 | curr = next; | |
2626 | } | |
2627 | ||
2628 | dump_map_entry(output_format, &curr, NULL); | |
2629 | ||
2630 | out: | |
26f54e9a | 2631 | blk_unref(blk); |
4c93a13b PB |
2632 | return ret < 0; |
2633 | } | |
2634 | ||
f7b4a940 AL |
2635 | #define SNAPSHOT_LIST 1 |
2636 | #define SNAPSHOT_CREATE 2 | |
2637 | #define SNAPSHOT_APPLY 3 | |
2638 | #define SNAPSHOT_DELETE 4 | |
2639 | ||
153859be | 2640 | static int img_snapshot(int argc, char **argv) |
f7b4a940 | 2641 | { |
26f54e9a | 2642 | BlockBackend *blk; |
f7b4a940 AL |
2643 | BlockDriverState *bs; |
2644 | QEMUSnapshotInfo sn; | |
2645 | char *filename, *snapshot_name = NULL; | |
c2abccec | 2646 | int c, ret = 0, bdrv_oflags; |
f7b4a940 AL |
2647 | int action = 0; |
2648 | qemu_timeval tv; | |
f382d43a | 2649 | bool quiet = false; |
a89d89d3 | 2650 | Error *err = NULL; |
eb769f74 | 2651 | bool image_opts = false; |
f7b4a940 | 2652 | |
ce099547 | 2653 | bdrv_oflags = BDRV_O_RDWR; |
f7b4a940 AL |
2654 | /* Parse commandline parameters */ |
2655 | for(;;) { | |
3babeb15 DB |
2656 | static const struct option long_options[] = { |
2657 | {"help", no_argument, 0, 'h'}, | |
2658 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 2659 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
2660 | {0, 0, 0, 0} |
2661 | }; | |
2662 | c = getopt_long(argc, argv, "la:c:d:hq", | |
2663 | long_options, NULL); | |
b8fb60da | 2664 | if (c == -1) { |
f7b4a940 | 2665 | break; |
b8fb60da | 2666 | } |
f7b4a940 | 2667 | switch(c) { |
ef87394c | 2668 | case '?': |
f7b4a940 AL |
2669 | case 'h': |
2670 | help(); | |
153859be | 2671 | return 0; |
f7b4a940 AL |
2672 | case 'l': |
2673 | if (action) { | |
ac1307ab | 2674 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2675 | return 0; |
f7b4a940 AL |
2676 | } |
2677 | action = SNAPSHOT_LIST; | |
f5edb014 | 2678 | bdrv_oflags &= ~BDRV_O_RDWR; /* no need for RW */ |
f7b4a940 AL |
2679 | break; |
2680 | case 'a': | |
2681 | if (action) { | |
ac1307ab | 2682 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2683 | return 0; |
f7b4a940 AL |
2684 | } |
2685 | action = SNAPSHOT_APPLY; | |
2686 | snapshot_name = optarg; | |
2687 | break; | |
2688 | case 'c': | |
2689 | if (action) { | |
ac1307ab | 2690 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2691 | return 0; |
f7b4a940 AL |
2692 | } |
2693 | action = SNAPSHOT_CREATE; | |
2694 | snapshot_name = optarg; | |
2695 | break; | |
2696 | case 'd': | |
2697 | if (action) { | |
ac1307ab | 2698 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2699 | return 0; |
f7b4a940 AL |
2700 | } |
2701 | action = SNAPSHOT_DELETE; | |
2702 | snapshot_name = optarg; | |
2703 | break; | |
f382d43a MR |
2704 | case 'q': |
2705 | quiet = true; | |
2706 | break; | |
3babeb15 DB |
2707 | case OPTION_OBJECT: { |
2708 | QemuOpts *opts; | |
2709 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
2710 | optarg, true); | |
2711 | if (!opts) { | |
2712 | return 1; | |
2713 | } | |
2714 | } break; | |
eb769f74 DB |
2715 | case OPTION_IMAGE_OPTS: |
2716 | image_opts = true; | |
2717 | break; | |
f7b4a940 AL |
2718 | } |
2719 | } | |
2720 | ||
fc11eb26 | 2721 | if (optind != argc - 1) { |
ac1307ab | 2722 | error_exit("Expecting one image file name"); |
b8fb60da | 2723 | } |
f7b4a940 AL |
2724 | filename = argv[optind++]; |
2725 | ||
3babeb15 DB |
2726 | if (qemu_opts_foreach(&qemu_object_opts, |
2727 | user_creatable_add_opts_foreach, | |
51b9b478 | 2728 | NULL, NULL)) { |
3babeb15 DB |
2729 | return 1; |
2730 | } | |
2731 | ||
f7b4a940 | 2732 | /* Open the image */ |
ce099547 | 2733 | blk = img_open(image_opts, filename, NULL, bdrv_oflags, false, quiet); |
7e7d56d9 MA |
2734 | if (!blk) { |
2735 | return 1; | |
c2abccec | 2736 | } |
7e7d56d9 | 2737 | bs = blk_bs(blk); |
f7b4a940 AL |
2738 | |
2739 | /* Perform the requested action */ | |
2740 | switch(action) { | |
2741 | case SNAPSHOT_LIST: | |
2742 | dump_snapshots(bs); | |
2743 | break; | |
2744 | ||
2745 | case SNAPSHOT_CREATE: | |
2746 | memset(&sn, 0, sizeof(sn)); | |
2747 | pstrcpy(sn.name, sizeof(sn.name), snapshot_name); | |
2748 | ||
2749 | qemu_gettimeofday(&tv); | |
2750 | sn.date_sec = tv.tv_sec; | |
2751 | sn.date_nsec = tv.tv_usec * 1000; | |
2752 | ||
2753 | ret = bdrv_snapshot_create(bs, &sn); | |
b8fb60da | 2754 | if (ret) { |
15654a6d | 2755 | error_report("Could not create snapshot '%s': %d (%s)", |
f7b4a940 | 2756 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 2757 | } |
f7b4a940 AL |
2758 | break; |
2759 | ||
2760 | case SNAPSHOT_APPLY: | |
2761 | ret = bdrv_snapshot_goto(bs, snapshot_name); | |
b8fb60da | 2762 | if (ret) { |
15654a6d | 2763 | error_report("Could not apply snapshot '%s': %d (%s)", |
f7b4a940 | 2764 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 2765 | } |
f7b4a940 AL |
2766 | break; |
2767 | ||
2768 | case SNAPSHOT_DELETE: | |
a89d89d3 | 2769 | bdrv_snapshot_delete_by_id_or_name(bs, snapshot_name, &err); |
84d18f06 | 2770 | if (err) { |
c29b77f9 MA |
2771 | error_reportf_err(err, "Could not delete snapshot '%s': ", |
2772 | snapshot_name); | |
a89d89d3 | 2773 | ret = 1; |
b8fb60da | 2774 | } |
f7b4a940 AL |
2775 | break; |
2776 | } | |
2777 | ||
2778 | /* Cleanup */ | |
26f54e9a | 2779 | blk_unref(blk); |
c2abccec MK |
2780 | if (ret) { |
2781 | return 1; | |
2782 | } | |
153859be | 2783 | return 0; |
f7b4a940 AL |
2784 | } |
2785 | ||
3e85c6fd KW |
2786 | static int img_rebase(int argc, char **argv) |
2787 | { | |
26f54e9a | 2788 | BlockBackend *blk = NULL, *blk_old_backing = NULL, *blk_new_backing = NULL; |
396374ca PB |
2789 | uint8_t *buf_old = NULL; |
2790 | uint8_t *buf_new = NULL; | |
f1d3cd79 | 2791 | BlockDriverState *bs = NULL; |
3e85c6fd | 2792 | char *filename; |
40055951 HR |
2793 | const char *fmt, *cache, *src_cache, *out_basefmt, *out_baseimg; |
2794 | int c, flags, src_flags, ret; | |
ce099547 | 2795 | bool writethrough, src_writethrough; |
3e85c6fd | 2796 | int unsafe = 0; |
6b837bc4 | 2797 | int progress = 0; |
f382d43a | 2798 | bool quiet = false; |
34b5d2c6 | 2799 | Error *local_err = NULL; |
eb769f74 | 2800 | bool image_opts = false; |
3e85c6fd KW |
2801 | |
2802 | /* Parse commandline parameters */ | |
e53dbee0 | 2803 | fmt = NULL; |
661a0f71 | 2804 | cache = BDRV_DEFAULT_CACHE; |
40055951 | 2805 | src_cache = BDRV_DEFAULT_CACHE; |
3e85c6fd KW |
2806 | out_baseimg = NULL; |
2807 | out_basefmt = NULL; | |
3e85c6fd | 2808 | for(;;) { |
3babeb15 DB |
2809 | static const struct option long_options[] = { |
2810 | {"help", no_argument, 0, 'h'}, | |
2811 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 2812 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
2813 | {0, 0, 0, 0} |
2814 | }; | |
2815 | c = getopt_long(argc, argv, "hf:F:b:upt:T:q", | |
2816 | long_options, NULL); | |
b8fb60da | 2817 | if (c == -1) { |
3e85c6fd | 2818 | break; |
b8fb60da | 2819 | } |
3e85c6fd | 2820 | switch(c) { |
ef87394c | 2821 | case '?': |
3e85c6fd KW |
2822 | case 'h': |
2823 | help(); | |
2824 | return 0; | |
e53dbee0 KW |
2825 | case 'f': |
2826 | fmt = optarg; | |
2827 | break; | |
3e85c6fd KW |
2828 | case 'F': |
2829 | out_basefmt = optarg; | |
2830 | break; | |
2831 | case 'b': | |
2832 | out_baseimg = optarg; | |
2833 | break; | |
2834 | case 'u': | |
2835 | unsafe = 1; | |
2836 | break; | |
6b837bc4 JS |
2837 | case 'p': |
2838 | progress = 1; | |
2839 | break; | |
661a0f71 FS |
2840 | case 't': |
2841 | cache = optarg; | |
2842 | break; | |
40055951 HR |
2843 | case 'T': |
2844 | src_cache = optarg; | |
2845 | break; | |
f382d43a MR |
2846 | case 'q': |
2847 | quiet = true; | |
2848 | break; | |
3babeb15 DB |
2849 | case OPTION_OBJECT: { |
2850 | QemuOpts *opts; | |
2851 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
2852 | optarg, true); | |
2853 | if (!opts) { | |
2854 | return 1; | |
2855 | } | |
2856 | } break; | |
eb769f74 DB |
2857 | case OPTION_IMAGE_OPTS: |
2858 | image_opts = true; | |
2859 | break; | |
3e85c6fd KW |
2860 | } |
2861 | } | |
2862 | ||
f382d43a MR |
2863 | if (quiet) { |
2864 | progress = 0; | |
2865 | } | |
2866 | ||
ac1307ab FZ |
2867 | if (optind != argc - 1) { |
2868 | error_exit("Expecting one image file name"); | |
2869 | } | |
2870 | if (!unsafe && !out_baseimg) { | |
2871 | error_exit("Must specify backing file (-b) or use unsafe mode (-u)"); | |
b8fb60da | 2872 | } |
3e85c6fd KW |
2873 | filename = argv[optind++]; |
2874 | ||
3babeb15 DB |
2875 | if (qemu_opts_foreach(&qemu_object_opts, |
2876 | user_creatable_add_opts_foreach, | |
51b9b478 | 2877 | NULL, NULL)) { |
3babeb15 DB |
2878 | return 1; |
2879 | } | |
2880 | ||
6b837bc4 JS |
2881 | qemu_progress_init(progress, 2.0); |
2882 | qemu_progress_print(0, 100); | |
2883 | ||
661a0f71 | 2884 | flags = BDRV_O_RDWR | (unsafe ? BDRV_O_NO_BACKING : 0); |
ce099547 | 2885 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); |
661a0f71 FS |
2886 | if (ret < 0) { |
2887 | error_report("Invalid cache option: %s", cache); | |
40ed35a3 | 2888 | goto out; |
661a0f71 FS |
2889 | } |
2890 | ||
ce099547 KW |
2891 | src_flags = 0; |
2892 | ret = bdrv_parse_cache_mode(src_cache, &src_flags, &src_writethrough); | |
40055951 HR |
2893 | if (ret < 0) { |
2894 | error_report("Invalid source cache option: %s", src_cache); | |
40ed35a3 | 2895 | goto out; |
40055951 HR |
2896 | } |
2897 | ||
ce099547 KW |
2898 | /* The source files are opened read-only, don't care about WCE */ |
2899 | assert((src_flags & BDRV_O_RDWR) == 0); | |
2900 | (void) src_writethrough; | |
2901 | ||
3e85c6fd KW |
2902 | /* |
2903 | * Open the images. | |
2904 | * | |
2905 | * Ignore the old backing file for unsafe rebase in case we want to correct | |
2906 | * the reference to a renamed or moved backing file. | |
2907 | */ | |
ce099547 | 2908 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet); |
7e7d56d9 | 2909 | if (!blk) { |
40ed35a3 SH |
2910 | ret = -1; |
2911 | goto out; | |
c2abccec | 2912 | } |
7e7d56d9 | 2913 | bs = blk_bs(blk); |
3e85c6fd | 2914 | |
3e85c6fd | 2915 | if (out_basefmt != NULL) { |
644483d9 | 2916 | if (bdrv_find_format(out_basefmt) == NULL) { |
15654a6d | 2917 | error_report("Invalid format name: '%s'", out_basefmt); |
c2abccec MK |
2918 | ret = -1; |
2919 | goto out; | |
3e85c6fd KW |
2920 | } |
2921 | } | |
2922 | ||
2923 | /* For safe rebasing we need to compare old and new backing file */ | |
40ed35a3 | 2924 | if (!unsafe) { |
9a29e18f | 2925 | char backing_name[PATH_MAX]; |
644483d9 HR |
2926 | QDict *options = NULL; |
2927 | ||
2928 | if (bs->backing_format[0] != '\0') { | |
2929 | options = qdict_new(); | |
2930 | qdict_put(options, "driver", qstring_from_str(bs->backing_format)); | |
2931 | } | |
3e85c6fd | 2932 | |
3e85c6fd | 2933 | bdrv_get_backing_filename(bs, backing_name, sizeof(backing_name)); |
efaa7c4e | 2934 | blk_old_backing = blk_new_open(backing_name, NULL, |
644483d9 HR |
2935 | options, src_flags, &local_err); |
2936 | if (!blk_old_backing) { | |
c29b77f9 MA |
2937 | error_reportf_err(local_err, |
2938 | "Could not open old backing file '%s': ", | |
2939 | backing_name); | |
c2abccec | 2940 | goto out; |
3e85c6fd | 2941 | } |
644483d9 | 2942 | |
a616673d | 2943 | if (out_baseimg[0]) { |
644483d9 HR |
2944 | if (out_basefmt) { |
2945 | options = qdict_new(); | |
2946 | qdict_put(options, "driver", qstring_from_str(out_basefmt)); | |
2947 | } else { | |
2948 | options = NULL; | |
2949 | } | |
2950 | ||
efaa7c4e | 2951 | blk_new_backing = blk_new_open(out_baseimg, NULL, |
644483d9 HR |
2952 | options, src_flags, &local_err); |
2953 | if (!blk_new_backing) { | |
c29b77f9 MA |
2954 | error_reportf_err(local_err, |
2955 | "Could not open new backing file '%s': ", | |
2956 | out_baseimg); | |
a616673d AB |
2957 | goto out; |
2958 | } | |
3e85c6fd KW |
2959 | } |
2960 | } | |
2961 | ||
2962 | /* | |
2963 | * Check each unallocated cluster in the COW file. If it is unallocated, | |
2964 | * accesses go to the backing file. We must therefore compare this cluster | |
2965 | * in the old and new backing file, and if they differ we need to copy it | |
2966 | * from the old backing file into the COW file. | |
2967 | * | |
2968 | * If qemu-img crashes during this step, no harm is done. The content of | |
2969 | * the image is the same as the original one at any time. | |
2970 | */ | |
2971 | if (!unsafe) { | |
52bf1e72 MA |
2972 | int64_t num_sectors; |
2973 | int64_t old_backing_num_sectors; | |
2974 | int64_t new_backing_num_sectors = 0; | |
3e85c6fd | 2975 | uint64_t sector; |
cc60e327 | 2976 | int n; |
1f710495 | 2977 | float local_progress = 0; |
d6771bfa | 2978 | |
f1d3cd79 HR |
2979 | buf_old = blk_blockalign(blk, IO_BUF_SIZE); |
2980 | buf_new = blk_blockalign(blk, IO_BUF_SIZE); | |
3e85c6fd | 2981 | |
f1d3cd79 | 2982 | num_sectors = blk_nb_sectors(blk); |
52bf1e72 MA |
2983 | if (num_sectors < 0) { |
2984 | error_report("Could not get size of '%s': %s", | |
2985 | filename, strerror(-num_sectors)); | |
2986 | ret = -1; | |
2987 | goto out; | |
2988 | } | |
f1d3cd79 | 2989 | old_backing_num_sectors = blk_nb_sectors(blk_old_backing); |
52bf1e72 | 2990 | if (old_backing_num_sectors < 0) { |
9a29e18f | 2991 | char backing_name[PATH_MAX]; |
52bf1e72 MA |
2992 | |
2993 | bdrv_get_backing_filename(bs, backing_name, sizeof(backing_name)); | |
2994 | error_report("Could not get size of '%s': %s", | |
2995 | backing_name, strerror(-old_backing_num_sectors)); | |
2996 | ret = -1; | |
2997 | goto out; | |
2998 | } | |
f1d3cd79 HR |
2999 | if (blk_new_backing) { |
3000 | new_backing_num_sectors = blk_nb_sectors(blk_new_backing); | |
52bf1e72 MA |
3001 | if (new_backing_num_sectors < 0) { |
3002 | error_report("Could not get size of '%s': %s", | |
3003 | out_baseimg, strerror(-new_backing_num_sectors)); | |
3004 | ret = -1; | |
3005 | goto out; | |
3006 | } | |
a616673d | 3007 | } |
3e85c6fd | 3008 | |
1f710495 KW |
3009 | if (num_sectors != 0) { |
3010 | local_progress = (float)100 / | |
3011 | (num_sectors / MIN(num_sectors, IO_BUF_SIZE / 512)); | |
3012 | } | |
3013 | ||
3e85c6fd KW |
3014 | for (sector = 0; sector < num_sectors; sector += n) { |
3015 | ||
3016 | /* How many sectors can we handle with the next read? */ | |
3017 | if (sector + (IO_BUF_SIZE / 512) <= num_sectors) { | |
3018 | n = (IO_BUF_SIZE / 512); | |
3019 | } else { | |
3020 | n = num_sectors - sector; | |
3021 | } | |
3022 | ||
3023 | /* If the cluster is allocated, we don't need to take action */ | |
cc60e327 | 3024 | ret = bdrv_is_allocated(bs, sector, n, &n); |
d663640c PB |
3025 | if (ret < 0) { |
3026 | error_report("error while reading image metadata: %s", | |
3027 | strerror(-ret)); | |
3028 | goto out; | |
3029 | } | |
cc60e327 | 3030 | if (ret) { |
3e85c6fd KW |
3031 | continue; |
3032 | } | |
3033 | ||
87a1b3e3 KW |
3034 | /* |
3035 | * Read old and new backing file and take into consideration that | |
3036 | * backing files may be smaller than the COW image. | |
3037 | */ | |
3038 | if (sector >= old_backing_num_sectors) { | |
3039 | memset(buf_old, 0, n * BDRV_SECTOR_SIZE); | |
3040 | } else { | |
3041 | if (sector + n > old_backing_num_sectors) { | |
3042 | n = old_backing_num_sectors - sector; | |
3043 | } | |
3044 | ||
9166920a EB |
3045 | ret = blk_pread(blk_old_backing, sector << BDRV_SECTOR_BITS, |
3046 | buf_old, n << BDRV_SECTOR_BITS); | |
87a1b3e3 KW |
3047 | if (ret < 0) { |
3048 | error_report("error while reading from old backing file"); | |
3049 | goto out; | |
3050 | } | |
3e85c6fd | 3051 | } |
87a1b3e3 | 3052 | |
f1d3cd79 | 3053 | if (sector >= new_backing_num_sectors || !blk_new_backing) { |
87a1b3e3 KW |
3054 | memset(buf_new, 0, n * BDRV_SECTOR_SIZE); |
3055 | } else { | |
3056 | if (sector + n > new_backing_num_sectors) { | |
3057 | n = new_backing_num_sectors - sector; | |
3058 | } | |
3059 | ||
9166920a EB |
3060 | ret = blk_pread(blk_new_backing, sector << BDRV_SECTOR_BITS, |
3061 | buf_new, n << BDRV_SECTOR_BITS); | |
87a1b3e3 KW |
3062 | if (ret < 0) { |
3063 | error_report("error while reading from new backing file"); | |
3064 | goto out; | |
3065 | } | |
3e85c6fd KW |
3066 | } |
3067 | ||
3068 | /* If they differ, we need to write to the COW file */ | |
3069 | uint64_t written = 0; | |
3070 | ||
3071 | while (written < n) { | |
3072 | int pnum; | |
3073 | ||
3074 | if (compare_sectors(buf_old + written * 512, | |
60b1bd4f | 3075 | buf_new + written * 512, n - written, &pnum)) |
3e85c6fd | 3076 | { |
9166920a EB |
3077 | ret = blk_pwrite(blk, |
3078 | (sector + written) << BDRV_SECTOR_BITS, | |
3079 | buf_old + written * 512, | |
3080 | pnum << BDRV_SECTOR_BITS, 0); | |
3e85c6fd | 3081 | if (ret < 0) { |
15654a6d | 3082 | error_report("Error while writing to COW image: %s", |
3e85c6fd | 3083 | strerror(-ret)); |
c2abccec | 3084 | goto out; |
3e85c6fd KW |
3085 | } |
3086 | } | |
3087 | ||
3088 | written += pnum; | |
3089 | } | |
6b837bc4 | 3090 | qemu_progress_print(local_progress, 100); |
3e85c6fd KW |
3091 | } |
3092 | } | |
3093 | ||
3094 | /* | |
3095 | * Change the backing file. All clusters that are different from the old | |
3096 | * backing file are overwritten in the COW file now, so the visible content | |
3097 | * doesn't change when we switch the backing file. | |
3098 | */ | |
a616673d AB |
3099 | if (out_baseimg && *out_baseimg) { |
3100 | ret = bdrv_change_backing_file(bs, out_baseimg, out_basefmt); | |
3101 | } else { | |
3102 | ret = bdrv_change_backing_file(bs, NULL, NULL); | |
3103 | } | |
3104 | ||
3e85c6fd | 3105 | if (ret == -ENOSPC) { |
15654a6d JS |
3106 | error_report("Could not change the backing file to '%s': No " |
3107 | "space left in the file header", out_baseimg); | |
3e85c6fd | 3108 | } else if (ret < 0) { |
15654a6d | 3109 | error_report("Could not change the backing file to '%s': %s", |
3e85c6fd KW |
3110 | out_baseimg, strerror(-ret)); |
3111 | } | |
3112 | ||
6b837bc4 | 3113 | qemu_progress_print(100, 0); |
3e85c6fd KW |
3114 | /* |
3115 | * TODO At this point it is possible to check if any clusters that are | |
3116 | * allocated in the COW file are the same in the backing file. If so, they | |
3117 | * could be dropped from the COW file. Don't do this before switching the | |
3118 | * backing file, in case of a crash this would lead to corruption. | |
3119 | */ | |
c2abccec | 3120 | out: |
6b837bc4 | 3121 | qemu_progress_end(); |
3e85c6fd KW |
3122 | /* Cleanup */ |
3123 | if (!unsafe) { | |
26f54e9a | 3124 | blk_unref(blk_old_backing); |
26f54e9a | 3125 | blk_unref(blk_new_backing); |
3e85c6fd | 3126 | } |
396374ca PB |
3127 | qemu_vfree(buf_old); |
3128 | qemu_vfree(buf_new); | |
3e85c6fd | 3129 | |
26f54e9a | 3130 | blk_unref(blk); |
c2abccec MK |
3131 | if (ret) { |
3132 | return 1; | |
3133 | } | |
3e85c6fd KW |
3134 | return 0; |
3135 | } | |
3136 | ||
ae6b0ed6 SH |
3137 | static int img_resize(int argc, char **argv) |
3138 | { | |
6750e795 | 3139 | Error *err = NULL; |
ae6b0ed6 SH |
3140 | int c, ret, relative; |
3141 | const char *filename, *fmt, *size; | |
3142 | int64_t n, total_size; | |
f382d43a | 3143 | bool quiet = false; |
26f54e9a | 3144 | BlockBackend *blk = NULL; |
20caf0f7 | 3145 | QemuOpts *param; |
3babeb15 | 3146 | |
20caf0f7 DXW |
3147 | static QemuOptsList resize_options = { |
3148 | .name = "resize_options", | |
3149 | .head = QTAILQ_HEAD_INITIALIZER(resize_options.head), | |
3150 | .desc = { | |
3151 | { | |
3152 | .name = BLOCK_OPT_SIZE, | |
3153 | .type = QEMU_OPT_SIZE, | |
3154 | .help = "Virtual disk size" | |
3155 | }, { | |
3156 | /* end of list */ | |
3157 | } | |
ae6b0ed6 | 3158 | }, |
ae6b0ed6 | 3159 | }; |
eb769f74 | 3160 | bool image_opts = false; |
ae6b0ed6 | 3161 | |
e80fec7f KW |
3162 | /* Remove size from argv manually so that negative numbers are not treated |
3163 | * as options by getopt. */ | |
3164 | if (argc < 3) { | |
ac1307ab | 3165 | error_exit("Not enough arguments"); |
e80fec7f KW |
3166 | return 1; |
3167 | } | |
3168 | ||
3169 | size = argv[--argc]; | |
3170 | ||
3171 | /* Parse getopt arguments */ | |
ae6b0ed6 SH |
3172 | fmt = NULL; |
3173 | for(;;) { | |
3babeb15 DB |
3174 | static const struct option long_options[] = { |
3175 | {"help", no_argument, 0, 'h'}, | |
3176 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 3177 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
3178 | {0, 0, 0, 0} |
3179 | }; | |
3180 | c = getopt_long(argc, argv, "f:hq", | |
3181 | long_options, NULL); | |
ae6b0ed6 SH |
3182 | if (c == -1) { |
3183 | break; | |
3184 | } | |
3185 | switch(c) { | |
ef87394c | 3186 | case '?': |
ae6b0ed6 SH |
3187 | case 'h': |
3188 | help(); | |
3189 | break; | |
3190 | case 'f': | |
3191 | fmt = optarg; | |
3192 | break; | |
f382d43a MR |
3193 | case 'q': |
3194 | quiet = true; | |
3195 | break; | |
3babeb15 DB |
3196 | case OPTION_OBJECT: { |
3197 | QemuOpts *opts; | |
3198 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
3199 | optarg, true); | |
3200 | if (!opts) { | |
3201 | return 1; | |
3202 | } | |
3203 | } break; | |
eb769f74 DB |
3204 | case OPTION_IMAGE_OPTS: |
3205 | image_opts = true; | |
3206 | break; | |
ae6b0ed6 SH |
3207 | } |
3208 | } | |
fc11eb26 | 3209 | if (optind != argc - 1) { |
ac1307ab | 3210 | error_exit("Expecting one image file name"); |
ae6b0ed6 SH |
3211 | } |
3212 | filename = argv[optind++]; | |
ae6b0ed6 | 3213 | |
3babeb15 DB |
3214 | if (qemu_opts_foreach(&qemu_object_opts, |
3215 | user_creatable_add_opts_foreach, | |
51b9b478 | 3216 | NULL, NULL)) { |
3babeb15 DB |
3217 | return 1; |
3218 | } | |
3219 | ||
ae6b0ed6 SH |
3220 | /* Choose grow, shrink, or absolute resize mode */ |
3221 | switch (size[0]) { | |
3222 | case '+': | |
3223 | relative = 1; | |
3224 | size++; | |
3225 | break; | |
3226 | case '-': | |
3227 | relative = -1; | |
3228 | size++; | |
3229 | break; | |
3230 | default: | |
3231 | relative = 0; | |
3232 | break; | |
3233 | } | |
3234 | ||
3235 | /* Parse size */ | |
87ea75d5 | 3236 | param = qemu_opts_create(&resize_options, NULL, 0, &error_abort); |
f43e47db | 3237 | qemu_opt_set(param, BLOCK_OPT_SIZE, size, &err); |
6750e795 MA |
3238 | if (err) { |
3239 | error_report_err(err); | |
2a81998a | 3240 | ret = -1; |
20caf0f7 | 3241 | qemu_opts_del(param); |
2a81998a | 3242 | goto out; |
ae6b0ed6 | 3243 | } |
20caf0f7 DXW |
3244 | n = qemu_opt_get_size(param, BLOCK_OPT_SIZE, 0); |
3245 | qemu_opts_del(param); | |
ae6b0ed6 | 3246 | |
efaa7c4e | 3247 | blk = img_open(image_opts, filename, fmt, |
ce099547 | 3248 | BDRV_O_RDWR, false, quiet); |
7e7d56d9 | 3249 | if (!blk) { |
2a81998a JS |
3250 | ret = -1; |
3251 | goto out; | |
c2abccec | 3252 | } |
ae6b0ed6 SH |
3253 | |
3254 | if (relative) { | |
f1d3cd79 | 3255 | total_size = blk_getlength(blk) + n * relative; |
ae6b0ed6 SH |
3256 | } else { |
3257 | total_size = n; | |
3258 | } | |
3259 | if (total_size <= 0) { | |
15654a6d | 3260 | error_report("New image size must be positive"); |
c2abccec MK |
3261 | ret = -1; |
3262 | goto out; | |
ae6b0ed6 SH |
3263 | } |
3264 | ||
f1d3cd79 | 3265 | ret = blk_truncate(blk, total_size); |
ae6b0ed6 SH |
3266 | switch (ret) { |
3267 | case 0: | |
f382d43a | 3268 | qprintf(quiet, "Image resized.\n"); |
ae6b0ed6 SH |
3269 | break; |
3270 | case -ENOTSUP: | |
259b2173 | 3271 | error_report("This image does not support resize"); |
ae6b0ed6 SH |
3272 | break; |
3273 | case -EACCES: | |
15654a6d | 3274 | error_report("Image is read-only"); |
ae6b0ed6 SH |
3275 | break; |
3276 | default: | |
15654a6d | 3277 | error_report("Error resizing image (%d)", -ret); |
ae6b0ed6 SH |
3278 | break; |
3279 | } | |
c2abccec | 3280 | out: |
26f54e9a | 3281 | blk_unref(blk); |
c2abccec MK |
3282 | if (ret) { |
3283 | return 1; | |
3284 | } | |
ae6b0ed6 SH |
3285 | return 0; |
3286 | } | |
3287 | ||
76a3a34d | 3288 | static void amend_status_cb(BlockDriverState *bs, |
8b13976d HR |
3289 | int64_t offset, int64_t total_work_size, |
3290 | void *opaque) | |
76a3a34d HR |
3291 | { |
3292 | qemu_progress_print(100.f * offset / total_work_size, 0); | |
3293 | } | |
3294 | ||
6f176b48 HR |
3295 | static int img_amend(int argc, char **argv) |
3296 | { | |
dc523cd3 | 3297 | Error *err = NULL; |
6f176b48 HR |
3298 | int c, ret = 0; |
3299 | char *options = NULL; | |
83d0521a CL |
3300 | QemuOptsList *create_opts = NULL; |
3301 | QemuOpts *opts = NULL; | |
bd39e6ed HR |
3302 | const char *fmt = NULL, *filename, *cache; |
3303 | int flags; | |
ce099547 | 3304 | bool writethrough; |
76a3a34d | 3305 | bool quiet = false, progress = false; |
26f54e9a | 3306 | BlockBackend *blk = NULL; |
6f176b48 | 3307 | BlockDriverState *bs = NULL; |
eb769f74 | 3308 | bool image_opts = false; |
6f176b48 | 3309 | |
bd39e6ed | 3310 | cache = BDRV_DEFAULT_CACHE; |
6f176b48 | 3311 | for (;;) { |
3babeb15 DB |
3312 | static const struct option long_options[] = { |
3313 | {"help", no_argument, 0, 'h'}, | |
3314 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 3315 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
3316 | {0, 0, 0, 0} |
3317 | }; | |
3318 | c = getopt_long(argc, argv, "ho:f:t:pq", | |
3319 | long_options, NULL); | |
6f176b48 HR |
3320 | if (c == -1) { |
3321 | break; | |
3322 | } | |
3323 | ||
3324 | switch (c) { | |
3325 | case 'h': | |
3326 | case '?': | |
3327 | help(); | |
3328 | break; | |
3329 | case 'o': | |
626f84f3 KW |
3330 | if (!is_valid_option_list(optarg)) { |
3331 | error_report("Invalid option list: %s", optarg); | |
3332 | ret = -1; | |
e814dffc | 3333 | goto out_no_progress; |
626f84f3 KW |
3334 | } |
3335 | if (!options) { | |
3336 | options = g_strdup(optarg); | |
3337 | } else { | |
3338 | char *old_options = options; | |
3339 | options = g_strdup_printf("%s,%s", options, optarg); | |
3340 | g_free(old_options); | |
3341 | } | |
6f176b48 HR |
3342 | break; |
3343 | case 'f': | |
3344 | fmt = optarg; | |
3345 | break; | |
bd39e6ed HR |
3346 | case 't': |
3347 | cache = optarg; | |
3348 | break; | |
76a3a34d HR |
3349 | case 'p': |
3350 | progress = true; | |
3351 | break; | |
6f176b48 HR |
3352 | case 'q': |
3353 | quiet = true; | |
3354 | break; | |
3babeb15 DB |
3355 | case OPTION_OBJECT: |
3356 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
3357 | optarg, true); | |
3358 | if (!opts) { | |
3359 | ret = -1; | |
3360 | goto out_no_progress; | |
3361 | } | |
3362 | break; | |
eb769f74 DB |
3363 | case OPTION_IMAGE_OPTS: |
3364 | image_opts = true; | |
3365 | break; | |
6f176b48 HR |
3366 | } |
3367 | } | |
3368 | ||
a283cb6e | 3369 | if (!options) { |
ac1307ab | 3370 | error_exit("Must specify options (-o)"); |
6f176b48 HR |
3371 | } |
3372 | ||
3babeb15 DB |
3373 | if (qemu_opts_foreach(&qemu_object_opts, |
3374 | user_creatable_add_opts_foreach, | |
51b9b478 | 3375 | NULL, NULL)) { |
3babeb15 DB |
3376 | ret = -1; |
3377 | goto out_no_progress; | |
3378 | } | |
3379 | ||
76a3a34d HR |
3380 | if (quiet) { |
3381 | progress = false; | |
3382 | } | |
3383 | qemu_progress_init(progress, 1.0); | |
3384 | ||
a283cb6e KW |
3385 | filename = (optind == argc - 1) ? argv[argc - 1] : NULL; |
3386 | if (fmt && has_help_option(options)) { | |
3387 | /* If a format is explicitly specified (and possibly no filename is | |
3388 | * given), print option help here */ | |
3389 | ret = print_block_option_help(filename, fmt); | |
3390 | goto out; | |
6f176b48 HR |
3391 | } |
3392 | ||
a283cb6e | 3393 | if (optind != argc - 1) { |
b2f27e44 HR |
3394 | error_report("Expecting one image file name"); |
3395 | ret = -1; | |
3396 | goto out; | |
a283cb6e | 3397 | } |
6f176b48 | 3398 | |
ce099547 KW |
3399 | flags = BDRV_O_RDWR; |
3400 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); | |
bd39e6ed HR |
3401 | if (ret < 0) { |
3402 | error_report("Invalid cache option: %s", cache); | |
3403 | goto out; | |
3404 | } | |
3405 | ||
ce099547 | 3406 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet); |
7e7d56d9 | 3407 | if (!blk) { |
6f176b48 HR |
3408 | ret = -1; |
3409 | goto out; | |
3410 | } | |
7e7d56d9 | 3411 | bs = blk_bs(blk); |
6f176b48 HR |
3412 | |
3413 | fmt = bs->drv->format_name; | |
3414 | ||
626f84f3 | 3415 | if (has_help_option(options)) { |
a283cb6e | 3416 | /* If the format was auto-detected, print option help here */ |
6f176b48 HR |
3417 | ret = print_block_option_help(filename, fmt); |
3418 | goto out; | |
3419 | } | |
3420 | ||
b2439d26 HR |
3421 | if (!bs->drv->create_opts) { |
3422 | error_report("Format driver '%s' does not support any options to amend", | |
3423 | fmt); | |
3424 | ret = -1; | |
3425 | goto out; | |
3426 | } | |
3427 | ||
c282e1fd | 3428 | create_opts = qemu_opts_append(create_opts, bs->drv->create_opts); |
83d0521a | 3429 | opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); |
dc523cd3 MA |
3430 | if (options) { |
3431 | qemu_opts_do_parse(opts, options, NULL, &err); | |
3432 | if (err) { | |
97a2ca7a | 3433 | error_report_err(err); |
dc523cd3 MA |
3434 | ret = -1; |
3435 | goto out; | |
3436 | } | |
6f176b48 HR |
3437 | } |
3438 | ||
76a3a34d HR |
3439 | /* In case the driver does not call amend_status_cb() */ |
3440 | qemu_progress_print(0.f, 0); | |
8b13976d | 3441 | ret = bdrv_amend_options(bs, opts, &amend_status_cb, NULL); |
76a3a34d | 3442 | qemu_progress_print(100.f, 0); |
6f176b48 HR |
3443 | if (ret < 0) { |
3444 | error_report("Error while amending options: %s", strerror(-ret)); | |
3445 | goto out; | |
3446 | } | |
3447 | ||
3448 | out: | |
76a3a34d HR |
3449 | qemu_progress_end(); |
3450 | ||
e814dffc | 3451 | out_no_progress: |
26f54e9a | 3452 | blk_unref(blk); |
83d0521a CL |
3453 | qemu_opts_del(opts); |
3454 | qemu_opts_free(create_opts); | |
626f84f3 KW |
3455 | g_free(options); |
3456 | ||
6f176b48 HR |
3457 | if (ret) { |
3458 | return 1; | |
3459 | } | |
3460 | return 0; | |
3461 | } | |
3462 | ||
b6133b8c KW |
3463 | typedef struct BenchData { |
3464 | BlockBackend *blk; | |
3465 | uint64_t image_size; | |
b6495fa8 | 3466 | bool write; |
b6133b8c KW |
3467 | int bufsize; |
3468 | int nrreq; | |
3469 | int n; | |
3470 | uint8_t *buf; | |
3471 | QEMUIOVector *qiov; | |
3472 | ||
3473 | int in_flight; | |
3474 | uint64_t offset; | |
3475 | } BenchData; | |
3476 | ||
3477 | static void bench_cb(void *opaque, int ret) | |
3478 | { | |
3479 | BenchData *b = opaque; | |
3480 | BlockAIOCB *acb; | |
3481 | ||
3482 | if (ret < 0) { | |
3483 | error_report("Failed request: %s\n", strerror(-ret)); | |
3484 | exit(EXIT_FAILURE); | |
3485 | } | |
3486 | if (b->in_flight > 0) { | |
3487 | b->n--; | |
3488 | b->in_flight--; | |
3489 | } | |
3490 | ||
3491 | while (b->n > b->in_flight && b->in_flight < b->nrreq) { | |
b6495fa8 KW |
3492 | if (b->write) { |
3493 | acb = blk_aio_pwritev(b->blk, b->offset, b->qiov, 0, | |
3494 | bench_cb, b); | |
3495 | } else { | |
3496 | acb = blk_aio_preadv(b->blk, b->offset, b->qiov, 0, | |
3497 | bench_cb, b); | |
3498 | } | |
b6133b8c KW |
3499 | if (!acb) { |
3500 | error_report("Failed to issue request"); | |
3501 | exit(EXIT_FAILURE); | |
3502 | } | |
3503 | b->in_flight++; | |
3504 | b->offset += b->bufsize; | |
3505 | b->offset %= b->image_size; | |
3506 | } | |
3507 | } | |
3508 | ||
3509 | static int img_bench(int argc, char **argv) | |
3510 | { | |
3511 | int c, ret = 0; | |
3512 | const char *fmt = NULL, *filename; | |
3513 | bool quiet = false; | |
3514 | bool image_opts = false; | |
b6495fa8 | 3515 | bool is_write = false; |
b6133b8c KW |
3516 | int count = 75000; |
3517 | int depth = 64; | |
d3199a31 | 3518 | int64_t offset = 0; |
b6133b8c | 3519 | size_t bufsize = 4096; |
b6495fa8 | 3520 | int pattern = 0; |
b6133b8c KW |
3521 | int64_t image_size; |
3522 | BlockBackend *blk = NULL; | |
3523 | BenchData data = {}; | |
3524 | int flags = 0; | |
3525 | bool writethrough; | |
3526 | struct timeval t1, t2; | |
3527 | int i; | |
3528 | ||
3529 | for (;;) { | |
3530 | static const struct option long_options[] = { | |
3531 | {"help", no_argument, 0, 'h'}, | |
3532 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, | |
b6495fa8 | 3533 | {"pattern", required_argument, 0, OPTION_PATTERN}, |
b6133b8c KW |
3534 | {0, 0, 0, 0} |
3535 | }; | |
d3199a31 | 3536 | c = getopt_long(argc, argv, "hc:d:f:no:qs:t:w", long_options, NULL); |
b6133b8c KW |
3537 | if (c == -1) { |
3538 | break; | |
3539 | } | |
3540 | ||
3541 | switch (c) { | |
3542 | case 'h': | |
3543 | case '?': | |
3544 | help(); | |
3545 | break; | |
3546 | case 'c': | |
3547 | { | |
3548 | char *end; | |
3549 | errno = 0; | |
3550 | count = strtoul(optarg, &end, 0); | |
3551 | if (errno || *end || count > INT_MAX) { | |
3552 | error_report("Invalid request count specified"); | |
3553 | return 1; | |
3554 | } | |
3555 | break; | |
3556 | } | |
3557 | case 'd': | |
3558 | { | |
3559 | char *end; | |
3560 | errno = 0; | |
3561 | depth = strtoul(optarg, &end, 0); | |
3562 | if (errno || *end || depth > INT_MAX) { | |
3563 | error_report("Invalid queue depth specified"); | |
3564 | return 1; | |
3565 | } | |
3566 | break; | |
3567 | } | |
3568 | case 'f': | |
3569 | fmt = optarg; | |
3570 | break; | |
3571 | case 'n': | |
3572 | flags |= BDRV_O_NATIVE_AIO; | |
3573 | break; | |
d3199a31 KW |
3574 | case 'o': |
3575 | { | |
3576 | char *end; | |
3577 | errno = 0; | |
3578 | offset = qemu_strtosz_suffix(optarg, &end, | |
3579 | QEMU_STRTOSZ_DEFSUFFIX_B); | |
3580 | if (offset < 0|| *end) { | |
3581 | error_report("Invalid offset specified"); | |
3582 | return 1; | |
3583 | } | |
3584 | break; | |
3585 | } | |
3586 | break; | |
b6133b8c KW |
3587 | case 'q': |
3588 | quiet = true; | |
3589 | break; | |
3590 | case 's': | |
3591 | { | |
3592 | int64_t sval; | |
3593 | char *end; | |
3594 | ||
3595 | sval = qemu_strtosz_suffix(optarg, &end, QEMU_STRTOSZ_DEFSUFFIX_B); | |
3596 | if (sval < 0 || sval > INT_MAX || *end) { | |
3597 | error_report("Invalid buffer size specified"); | |
3598 | return 1; | |
3599 | } | |
3600 | ||
3601 | bufsize = sval; | |
3602 | break; | |
3603 | } | |
3604 | case 't': | |
3605 | ret = bdrv_parse_cache_mode(optarg, &flags, &writethrough); | |
3606 | if (ret < 0) { | |
3607 | error_report("Invalid cache mode"); | |
3608 | ret = -1; | |
3609 | goto out; | |
3610 | } | |
3611 | break; | |
b6495fa8 KW |
3612 | case 'w': |
3613 | flags |= BDRV_O_RDWR; | |
3614 | is_write = true; | |
3615 | break; | |
3616 | case OPTION_PATTERN: | |
3617 | { | |
3618 | char *end; | |
3619 | errno = 0; | |
3620 | pattern = strtoul(optarg, &end, 0); | |
3621 | if (errno || *end || pattern > 0xff) { | |
3622 | error_report("Invalid pattern byte specified"); | |
3623 | return 1; | |
3624 | } | |
3625 | break; | |
3626 | } | |
b6133b8c KW |
3627 | case OPTION_IMAGE_OPTS: |
3628 | image_opts = true; | |
3629 | break; | |
3630 | } | |
3631 | } | |
3632 | ||
3633 | if (optind != argc - 1) { | |
3634 | error_exit("Expecting one image file name"); | |
3635 | } | |
3636 | filename = argv[argc - 1]; | |
3637 | ||
3638 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet); | |
3639 | if (!blk) { | |
3640 | ret = -1; | |
3641 | goto out; | |
3642 | } | |
3643 | ||
3644 | image_size = blk_getlength(blk); | |
3645 | if (image_size < 0) { | |
3646 | ret = image_size; | |
3647 | goto out; | |
3648 | } | |
3649 | ||
3650 | data = (BenchData) { | |
3651 | .blk = blk, | |
3652 | .image_size = image_size, | |
3653 | .bufsize = bufsize, | |
3654 | .nrreq = depth, | |
3655 | .n = count, | |
d3199a31 | 3656 | .offset = offset, |
b6495fa8 | 3657 | .write = is_write, |
b6133b8c | 3658 | }; |
d3199a31 KW |
3659 | printf("Sending %d %s requests, %d bytes each, %d in parallel " |
3660 | "(starting at offset %" PRId64 ")\n", | |
3661 | data.n, data.write ? "write" : "read", data.bufsize, data.nrreq, | |
3662 | data.offset); | |
b6133b8c KW |
3663 | |
3664 | data.buf = blk_blockalign(blk, data.nrreq * data.bufsize); | |
b6495fa8 KW |
3665 | memset(data.buf, pattern, data.nrreq * data.bufsize); |
3666 | ||
b6133b8c KW |
3667 | data.qiov = g_new(QEMUIOVector, data.nrreq); |
3668 | for (i = 0; i < data.nrreq; i++) { | |
3669 | qemu_iovec_init(&data.qiov[i], 1); | |
3670 | qemu_iovec_add(&data.qiov[i], | |
3671 | data.buf + i * data.bufsize, data.bufsize); | |
3672 | } | |
3673 | ||
3674 | gettimeofday(&t1, NULL); | |
3675 | bench_cb(&data, 0); | |
3676 | ||
3677 | while (data.n > 0) { | |
3678 | main_loop_wait(false); | |
3679 | } | |
3680 | gettimeofday(&t2, NULL); | |
3681 | ||
3682 | printf("Run completed in %3.3f seconds.\n", | |
3683 | (t2.tv_sec - t1.tv_sec) | |
3684 | + ((double)(t2.tv_usec - t1.tv_usec) / 1000000)); | |
3685 | ||
3686 | out: | |
3687 | qemu_vfree(data.buf); | |
3688 | blk_unref(blk); | |
3689 | ||
3690 | if (ret) { | |
3691 | return 1; | |
3692 | } | |
3693 | return 0; | |
3694 | } | |
3695 | ||
3696 | ||
c227f099 | 3697 | static const img_cmd_t img_cmds[] = { |
153859be SB |
3698 | #define DEF(option, callback, arg_string) \ |
3699 | { option, callback }, | |
3700 | #include "qemu-img-cmds.h" | |
3701 | #undef DEF | |
3702 | #undef GEN_DOCS | |
3703 | { NULL, NULL, }, | |
3704 | }; | |
3705 | ||
ea2384d3 FB |
3706 | int main(int argc, char **argv) |
3707 | { | |
c227f099 | 3708 | const img_cmd_t *cmd; |
153859be | 3709 | const char *cmdname; |
2f78e491 | 3710 | Error *local_error = NULL; |
7db1689c | 3711 | int c; |
7db1689c JC |
3712 | static const struct option long_options[] = { |
3713 | {"help", no_argument, 0, 'h'}, | |
5f6979cb | 3714 | {"version", no_argument, 0, 'v'}, |
7db1689c JC |
3715 | {0, 0, 0, 0} |
3716 | }; | |
ea2384d3 | 3717 | |
526eda14 MK |
3718 | #ifdef CONFIG_POSIX |
3719 | signal(SIGPIPE, SIG_IGN); | |
3720 | #endif | |
3721 | ||
53f76e58 | 3722 | error_set_progname(argv[0]); |
10f5bff6 | 3723 | qemu_init_exec_dir(argv[0]); |
53f76e58 | 3724 | |
2f78e491 | 3725 | if (qemu_init_main_loop(&local_error)) { |
565f65d2 | 3726 | error_report_err(local_error); |
2f78e491 CN |
3727 | exit(EXIT_FAILURE); |
3728 | } | |
3729 | ||
e8f2d272 | 3730 | qcrypto_init(&error_fatal); |
c2297088 | 3731 | |
064097d9 | 3732 | module_call_init(MODULE_INIT_QOM); |
ea2384d3 | 3733 | bdrv_init(); |
ac1307ab FZ |
3734 | if (argc < 2) { |
3735 | error_exit("Not enough arguments"); | |
3736 | } | |
153859be | 3737 | cmdname = argv[1]; |
153859be | 3738 | |
3babeb15 | 3739 | qemu_add_opts(&qemu_object_opts); |
eb769f74 | 3740 | qemu_add_opts(&qemu_source_opts); |
3babeb15 | 3741 | |
153859be | 3742 | /* find the command */ |
5f6979cb | 3743 | for (cmd = img_cmds; cmd->name != NULL; cmd++) { |
153859be | 3744 | if (!strcmp(cmdname, cmd->name)) { |
7db1689c | 3745 | return cmd->handler(argc - 1, argv + 1); |
153859be | 3746 | } |
ea2384d3 | 3747 | } |
153859be | 3748 | |
5f6979cb | 3749 | c = getopt_long(argc, argv, "h", long_options, NULL); |
7db1689c JC |
3750 | |
3751 | if (c == 'h') { | |
3752 | help(); | |
3753 | } | |
5f6979cb JC |
3754 | if (c == 'v') { |
3755 | printf(QEMU_IMG_VERSION); | |
3756 | return 0; | |
3757 | } | |
7db1689c | 3758 | |
153859be | 3759 | /* not found */ |
ac1307ab | 3760 | error_exit("Command not found: %s", cmdname); |
ea2384d3 | 3761 | } |