]>
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, |
55d539c8 KW |
57 | OPTION_FLUSH_INTERVAL = 261, |
58 | OPTION_NO_DRAIN = 262, | |
8599ea4c FS |
59 | }; |
60 | ||
61 | typedef enum OutputFormat { | |
62 | OFORMAT_JSON, | |
63 | OFORMAT_HUMAN, | |
64 | } OutputFormat; | |
65 | ||
e6996143 | 66 | /* Default to cache=writeback as data integrity is not important for qemu-img */ |
661a0f71 | 67 | #define BDRV_DEFAULT_CACHE "writeback" |
137519ce | 68 | |
00c6d403 | 69 | static void format_print(void *opaque, const char *name) |
ea2384d3 | 70 | { |
00c6d403 | 71 | printf(" %s", name); |
ea2384d3 FB |
72 | } |
73 | ||
ac1307ab FZ |
74 | static void QEMU_NORETURN GCC_FMT_ATTR(1, 2) error_exit(const char *fmt, ...) |
75 | { | |
76 | va_list ap; | |
77 | ||
78 | error_printf("qemu-img: "); | |
79 | ||
80 | va_start(ap, fmt); | |
81 | error_vprintf(fmt, ap); | |
82 | va_end(ap); | |
83 | ||
84 | error_printf("\nTry 'qemu-img --help' for more information\n"); | |
85 | exit(EXIT_FAILURE); | |
86 | } | |
87 | ||
d2c639d6 | 88 | /* Please keep in synch with qemu-img.texi */ |
ac1307ab | 89 | static void QEMU_NORETURN help(void) |
ea2384d3 | 90 | { |
e00291c0 | 91 | const char *help_msg = |
5f6979cb | 92 | QEMU_IMG_VERSION |
3f020d70 | 93 | "usage: qemu-img command [command options]\n" |
94 | "QEMU disk image utility\n" | |
95 | "\n" | |
96 | "Command syntax:\n" | |
153859be SB |
97 | #define DEF(option, callback, arg_string) \ |
98 | " " arg_string "\n" | |
99 | #include "qemu-img-cmds.h" | |
100 | #undef DEF | |
101 | #undef GEN_DOCS | |
3f020d70 | 102 | "\n" |
103 | "Command parameters:\n" | |
104 | " 'filename' is a disk image filename\n" | |
3babeb15 DB |
105 | " 'objectdef' is a QEMU user creatable object definition. See the qemu(1)\n" |
106 | " manual page for a description of the object properties. The most common\n" | |
107 | " object type is a 'secret', which is used to supply passwords and/or\n" | |
108 | " encryption keys.\n" | |
3f020d70 | 109 | " 'fmt' is the disk image format. It is guessed automatically in most cases\n" |
661a0f71 | 110 | " 'cache' is the cache mode used to write the output disk image, the valid\n" |
80ccf93b LY |
111 | " options are: 'none', 'writeback' (default, except for convert), 'writethrough',\n" |
112 | " 'directsync' and 'unsafe' (default for convert)\n" | |
bb87fdf8 SH |
113 | " 'src_cache' is the cache mode used to read input disk images, the valid\n" |
114 | " options are the same as for the 'cache' option\n" | |
3f020d70 | 115 | " 'size' is the disk image size in bytes. Optional suffixes\n" |
5e00984a KW |
116 | " 'k' or 'K' (kilobyte, 1024), 'M' (megabyte, 1024k), 'G' (gigabyte, 1024M),\n" |
117 | " 'T' (terabyte, 1024G), 'P' (petabyte, 1024T) and 'E' (exabyte, 1024P) are\n" | |
118 | " supported. 'b' is ignored.\n" | |
3f020d70 | 119 | " 'output_filename' is the destination disk image filename\n" |
120 | " 'output_fmt' is the destination format\n" | |
121 | " 'options' is a comma separated list of format specific options in a\n" | |
122 | " name=value format. Use -o ? for an overview of the options supported by the\n" | |
123 | " used format\n" | |
ef80654d WX |
124 | " 'snapshot_param' is param used for internal snapshot, format\n" |
125 | " is 'snapshot.id=[ID],snapshot.name=[NAME]', or\n" | |
126 | " '[ID_OR_NAME]'\n" | |
127 | " 'snapshot_id_or_name' is deprecated, use 'snapshot_param'\n" | |
128 | " instead\n" | |
3f020d70 | 129 | " '-c' indicates that target image must be compressed (qcow format only)\n" |
130 | " '-u' enables unsafe rebasing. It is assumed that old and new backing file\n" | |
131 | " match exactly. The image doesn't need a working backing file before\n" | |
132 | " rebasing in this case (useful for renaming the backing file)\n" | |
133 | " '-h' with or without a command shows this help and lists the supported formats\n" | |
6b837bc4 | 134 | " '-p' show progress of command (only certain commands)\n" |
f382d43a | 135 | " '-q' use Quiet mode - do not print any output (except errors)\n" |
11b6699a PL |
136 | " '-S' indicates the consecutive number of bytes (defaults to 4k) that must\n" |
137 | " contain only zeros for qemu-img to create a sparse image during\n" | |
138 | " conversion. If the number of bytes is 0, the source will not be scanned for\n" | |
139 | " unallocated or zero sectors, and the destination image will always be\n" | |
140 | " fully allocated\n" | |
c054b3fd | 141 | " '--output' takes the format in which the output must be done (human or json)\n" |
b2e10493 AD |
142 | " '-n' skips the target volume creation (useful if the volume is created\n" |
143 | " prior to running qemu-img)\n" | |
3f020d70 | 144 | "\n" |
4534ff54 KW |
145 | "Parameters to check subcommand:\n" |
146 | " '-r' tries to repair any inconsistencies that are found during the check.\n" | |
147 | " '-r leaks' repairs only cluster leaks, whereas '-r all' fixes all\n" | |
148 | " kinds of errors, with a higher risk of choosing the wrong fix or\n" | |
0546b8c2 | 149 | " hiding corruption that has already occurred.\n" |
4534ff54 | 150 | "\n" |
3f020d70 | 151 | "Parameters to snapshot subcommand:\n" |
152 | " 'snapshot' is the name of the snapshot to create, apply or delete\n" | |
153 | " '-a' applies a snapshot (revert disk to saved state)\n" | |
154 | " '-c' creates a snapshot\n" | |
155 | " '-d' deletes a snapshot\n" | |
d14ed18c MR |
156 | " '-l' lists all snapshots in the given image\n" |
157 | "\n" | |
158 | "Parameters to compare subcommand:\n" | |
159 | " '-f' first image format\n" | |
160 | " '-F' second image format\n" | |
161 | " '-s' run in Strict mode - fail on different image size or sector allocation\n"; | |
e00291c0 PB |
162 | |
163 | printf("%s\nSupported formats:", help_msg); | |
00c6d403 | 164 | bdrv_iterate_format(format_print, NULL); |
ea2384d3 | 165 | printf("\n"); |
ac1307ab | 166 | exit(EXIT_SUCCESS); |
ea2384d3 FB |
167 | } |
168 | ||
3babeb15 DB |
169 | static QemuOptsList qemu_object_opts = { |
170 | .name = "object", | |
171 | .implied_opt_name = "qom-type", | |
172 | .head = QTAILQ_HEAD_INITIALIZER(qemu_object_opts.head), | |
173 | .desc = { | |
174 | { } | |
175 | }, | |
176 | }; | |
177 | ||
eb769f74 DB |
178 | static QemuOptsList qemu_source_opts = { |
179 | .name = "source", | |
180 | .implied_opt_name = "file", | |
181 | .head = QTAILQ_HEAD_INITIALIZER(qemu_source_opts.head), | |
182 | .desc = { | |
183 | { } | |
184 | }, | |
185 | }; | |
186 | ||
7c30f657 | 187 | static int GCC_FMT_ATTR(2, 3) qprintf(bool quiet, const char *fmt, ...) |
f382d43a MR |
188 | { |
189 | int ret = 0; | |
190 | if (!quiet) { | |
191 | va_list args; | |
192 | va_start(args, fmt); | |
193 | ret = vprintf(fmt, args); | |
194 | va_end(args); | |
195 | } | |
196 | return ret; | |
197 | } | |
198 | ||
ea2384d3 | 199 | |
4ac8aacd JS |
200 | static int print_block_option_help(const char *filename, const char *fmt) |
201 | { | |
202 | BlockDriver *drv, *proto_drv; | |
83d0521a | 203 | QemuOptsList *create_opts = NULL; |
b65a5e12 | 204 | Error *local_err = NULL; |
4ac8aacd JS |
205 | |
206 | /* Find driver and parse its options */ | |
207 | drv = bdrv_find_format(fmt); | |
208 | if (!drv) { | |
15654a6d | 209 | error_report("Unknown file format '%s'", fmt); |
4ac8aacd JS |
210 | return 1; |
211 | } | |
212 | ||
c282e1fd | 213 | create_opts = qemu_opts_append(create_opts, drv->create_opts); |
a283cb6e | 214 | if (filename) { |
b65a5e12 | 215 | proto_drv = bdrv_find_protocol(filename, true, &local_err); |
a283cb6e | 216 | if (!proto_drv) { |
2867ce4a | 217 | error_report_err(local_err); |
83d0521a | 218 | qemu_opts_free(create_opts); |
a283cb6e KW |
219 | return 1; |
220 | } | |
c282e1fd | 221 | create_opts = qemu_opts_append(create_opts, proto_drv->create_opts); |
a283cb6e KW |
222 | } |
223 | ||
83d0521a CL |
224 | qemu_opts_print_help(create_opts); |
225 | qemu_opts_free(create_opts); | |
4ac8aacd JS |
226 | return 0; |
227 | } | |
228 | ||
eb769f74 DB |
229 | |
230 | static int img_open_password(BlockBackend *blk, const char *filename, | |
abb06c5a | 231 | int flags, bool quiet) |
75c23805 FB |
232 | { |
233 | BlockDriverState *bs; | |
75c23805 | 234 | char password[256]; |
eb769f74 DB |
235 | |
236 | bs = blk_bs(blk); | |
4ef130fc DB |
237 | if (bdrv_is_encrypted(bs) && bdrv_key_required(bs) && |
238 | !(flags & BDRV_O_NO_IO)) { | |
eb769f74 DB |
239 | qprintf(quiet, "Disk image '%s' is encrypted.\n", filename); |
240 | if (qemu_read_password(password, sizeof(password)) < 0) { | |
241 | error_report("No password given"); | |
242 | return -1; | |
243 | } | |
244 | if (bdrv_set_key(bs, password) < 0) { | |
245 | error_report("invalid password"); | |
246 | return -1; | |
247 | } | |
248 | } | |
249 | return 0; | |
250 | } | |
251 | ||
252 | ||
efaa7c4e | 253 | static BlockBackend *img_open_opts(const char *optstr, |
ce099547 | 254 | QemuOpts *opts, int flags, bool writethrough, |
abb06c5a | 255 | bool quiet) |
eb769f74 DB |
256 | { |
257 | QDict *options; | |
258 | Error *local_err = NULL; | |
259 | BlockBackend *blk; | |
260 | options = qemu_opts_to_qdict(opts, NULL); | |
efaa7c4e | 261 | blk = blk_new_open(NULL, NULL, options, flags, &local_err); |
eb769f74 | 262 | if (!blk) { |
143605a2 | 263 | error_reportf_err(local_err, "Could not open '%s': ", optstr); |
eb769f74 DB |
264 | return NULL; |
265 | } | |
ce099547 | 266 | blk_set_enable_write_cache(blk, !writethrough); |
eb769f74 | 267 | |
abb06c5a | 268 | if (img_open_password(blk, optstr, flags, quiet) < 0) { |
eb769f74 DB |
269 | blk_unref(blk); |
270 | return NULL; | |
271 | } | |
272 | return blk; | |
273 | } | |
274 | ||
efaa7c4e | 275 | static BlockBackend *img_open_file(const char *filename, |
eb769f74 | 276 | const char *fmt, int flags, |
ce099547 | 277 | bool writethrough, bool quiet) |
eb769f74 DB |
278 | { |
279 | BlockBackend *blk; | |
34b5d2c6 | 280 | Error *local_err = NULL; |
5bd31326 | 281 | QDict *options = NULL; |
ad717139 | 282 | |
75c23805 | 283 | if (fmt) { |
5bd31326 HR |
284 | options = qdict_new(); |
285 | qdict_put(options, "driver", qstring_from_str(fmt)); | |
75c23805 | 286 | } |
b9eaf9ec | 287 | |
efaa7c4e | 288 | blk = blk_new_open(filename, NULL, options, flags, &local_err); |
5bd31326 | 289 | if (!blk) { |
c29b77f9 | 290 | error_reportf_err(local_err, "Could not open '%s': ", filename); |
eb769f74 | 291 | return NULL; |
75c23805 | 292 | } |
ce099547 | 293 | blk_set_enable_write_cache(blk, !writethrough); |
b9eaf9ec | 294 | |
abb06c5a | 295 | if (img_open_password(blk, filename, flags, quiet) < 0) { |
eb769f74 DB |
296 | blk_unref(blk); |
297 | return NULL; | |
298 | } | |
299 | return blk; | |
300 | } | |
301 | ||
302 | ||
efaa7c4e | 303 | static BlockBackend *img_open(bool image_opts, |
eb769f74 | 304 | const char *filename, |
ce099547 | 305 | const char *fmt, int flags, bool writethrough, |
abb06c5a | 306 | bool quiet) |
eb769f74 DB |
307 | { |
308 | BlockBackend *blk; | |
309 | if (image_opts) { | |
310 | QemuOpts *opts; | |
311 | if (fmt) { | |
312 | error_report("--image-opts and --format are mutually exclusive"); | |
313 | return NULL; | |
314 | } | |
315 | opts = qemu_opts_parse_noisily(qemu_find_opts("source"), | |
316 | filename, true); | |
317 | if (!opts) { | |
318 | return NULL; | |
319 | } | |
ce099547 | 320 | blk = img_open_opts(filename, opts, flags, writethrough, quiet); |
eb769f74 | 321 | } else { |
ce099547 | 322 | blk = img_open_file(filename, fmt, flags, writethrough, quiet); |
75c23805 | 323 | } |
7e7d56d9 | 324 | return blk; |
75c23805 FB |
325 | } |
326 | ||
eb769f74 | 327 | |
83d0521a | 328 | static int add_old_style_options(const char *fmt, QemuOpts *opts, |
eec77d9e JS |
329 | const char *base_filename, |
330 | const char *base_fmt) | |
efa84d43 | 331 | { |
6750e795 MA |
332 | Error *err = NULL; |
333 | ||
efa84d43 | 334 | if (base_filename) { |
f43e47db | 335 | qemu_opt_set(opts, BLOCK_OPT_BACKING_FILE, base_filename, &err); |
6750e795 | 336 | if (err) { |
15654a6d JS |
337 | error_report("Backing file not supported for file format '%s'", |
338 | fmt); | |
6750e795 | 339 | error_free(err); |
c2abccec | 340 | return -1; |
efa84d43 KW |
341 | } |
342 | } | |
343 | if (base_fmt) { | |
f43e47db | 344 | qemu_opt_set(opts, BLOCK_OPT_BACKING_FMT, base_fmt, &err); |
6750e795 | 345 | if (err) { |
15654a6d JS |
346 | error_report("Backing file format not supported for file " |
347 | "format '%s'", fmt); | |
6750e795 | 348 | error_free(err); |
c2abccec | 349 | return -1; |
efa84d43 KW |
350 | } |
351 | } | |
c2abccec | 352 | return 0; |
efa84d43 KW |
353 | } |
354 | ||
ea2384d3 FB |
355 | static int img_create(int argc, char **argv) |
356 | { | |
a9300911 | 357 | int c; |
1da7cfbd | 358 | uint64_t img_size = -1; |
ea2384d3 | 359 | const char *fmt = "raw"; |
9230eaf6 | 360 | const char *base_fmt = NULL; |
ea2384d3 FB |
361 | const char *filename; |
362 | const char *base_filename = NULL; | |
9ea2ea71 | 363 | char *options = NULL; |
9b37525a | 364 | Error *local_err = NULL; |
f382d43a | 365 | bool quiet = false; |
3b46e624 | 366 | |
ea2384d3 | 367 | for(;;) { |
3babeb15 DB |
368 | static const struct option long_options[] = { |
369 | {"help", no_argument, 0, 'h'}, | |
370 | {"object", required_argument, 0, OPTION_OBJECT}, | |
371 | {0, 0, 0, 0} | |
372 | }; | |
373 | c = getopt_long(argc, argv, "F:b:f:he6o:q", | |
374 | long_options, NULL); | |
b8fb60da | 375 | if (c == -1) { |
ea2384d3 | 376 | break; |
b8fb60da | 377 | } |
ea2384d3 | 378 | switch(c) { |
ef87394c | 379 | case '?': |
ea2384d3 FB |
380 | case 'h': |
381 | help(); | |
382 | break; | |
9230eaf6 AL |
383 | case 'F': |
384 | base_fmt = optarg; | |
385 | break; | |
ea2384d3 FB |
386 | case 'b': |
387 | base_filename = optarg; | |
388 | break; | |
389 | case 'f': | |
390 | fmt = optarg; | |
391 | break; | |
392 | case 'e': | |
9d42e15d | 393 | error_report("option -e is deprecated, please use \'-o " |
eec77d9e | 394 | "encryption\' instead!"); |
77386bf6 | 395 | goto fail; |
d8871c5a | 396 | case '6': |
9d42e15d | 397 | error_report("option -6 is deprecated, please use \'-o " |
eec77d9e | 398 | "compat6\' instead!"); |
77386bf6 | 399 | goto fail; |
9ea2ea71 | 400 | case 'o': |
77386bf6 KW |
401 | if (!is_valid_option_list(optarg)) { |
402 | error_report("Invalid option list: %s", optarg); | |
403 | goto fail; | |
404 | } | |
405 | if (!options) { | |
406 | options = g_strdup(optarg); | |
407 | } else { | |
408 | char *old_options = options; | |
409 | options = g_strdup_printf("%s,%s", options, optarg); | |
410 | g_free(old_options); | |
411 | } | |
9ea2ea71 | 412 | break; |
f382d43a MR |
413 | case 'q': |
414 | quiet = true; | |
415 | break; | |
3babeb15 DB |
416 | case OPTION_OBJECT: { |
417 | QemuOpts *opts; | |
418 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
419 | optarg, true); | |
420 | if (!opts) { | |
421 | goto fail; | |
422 | } | |
423 | } break; | |
ea2384d3 FB |
424 | } |
425 | } | |
9230eaf6 | 426 | |
b50cbabc | 427 | /* Get the filename */ |
a283cb6e KW |
428 | filename = (optind < argc) ? argv[optind] : NULL; |
429 | if (options && has_help_option(options)) { | |
430 | g_free(options); | |
431 | return print_block_option_help(filename, fmt); | |
432 | } | |
433 | ||
b8fb60da | 434 | if (optind >= argc) { |
ac1307ab | 435 | error_exit("Expecting image file name"); |
b8fb60da | 436 | } |
a283cb6e | 437 | optind++; |
b50cbabc | 438 | |
3babeb15 DB |
439 | if (qemu_opts_foreach(&qemu_object_opts, |
440 | user_creatable_add_opts_foreach, | |
51b9b478 | 441 | NULL, NULL)) { |
3babeb15 DB |
442 | goto fail; |
443 | } | |
444 | ||
1da7cfbd JS |
445 | /* Get image size, if specified */ |
446 | if (optind < argc) { | |
70b4f4bb | 447 | int64_t sval; |
e36b3695 | 448 | char *end; |
4677bb40 MAL |
449 | sval = qemu_strtosz_suffix(argv[optind++], &end, |
450 | QEMU_STRTOSZ_DEFSUFFIX_B); | |
e36b3695 | 451 | if (sval < 0 || *end) { |
79443397 LG |
452 | if (sval == -ERANGE) { |
453 | error_report("Image size must be less than 8 EiB!"); | |
454 | } else { | |
455 | error_report("Invalid image size specified! You may use k, M, " | |
5e00984a KW |
456 | "G, T, P or E suffixes for "); |
457 | error_report("kilobytes, megabytes, gigabytes, terabytes, " | |
458 | "petabytes and exabytes."); | |
79443397 | 459 | } |
77386bf6 | 460 | goto fail; |
1da7cfbd JS |
461 | } |
462 | img_size = (uint64_t)sval; | |
463 | } | |
fc11eb26 | 464 | if (optind != argc) { |
ac1307ab | 465 | error_exit("Unexpected argument: %s", argv[optind]); |
fc11eb26 | 466 | } |
1da7cfbd | 467 | |
9b37525a | 468 | bdrv_img_create(filename, fmt, base_filename, base_fmt, |
61de4c68 | 469 | options, img_size, 0, &local_err, quiet); |
84d18f06 | 470 | if (local_err) { |
c29b77f9 | 471 | error_reportf_err(local_err, "%s: ", filename); |
77386bf6 | 472 | goto fail; |
c2abccec | 473 | } |
a9300911 | 474 | |
77386bf6 | 475 | g_free(options); |
ea2384d3 | 476 | return 0; |
77386bf6 KW |
477 | |
478 | fail: | |
479 | g_free(options); | |
480 | return 1; | |
ea2384d3 FB |
481 | } |
482 | ||
f382d43a | 483 | static void dump_json_image_check(ImageCheck *check, bool quiet) |
8599ea4c | 484 | { |
4399c438 | 485 | Error *local_err = NULL; |
8599ea4c FS |
486 | QString *str; |
487 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
488 | QObject *obj; | |
51e72bc1 EB |
489 | visit_type_ImageCheck(qmp_output_get_visitor(ov), NULL, &check, |
490 | &local_err); | |
8599ea4c FS |
491 | obj = qmp_output_get_qobject(ov); |
492 | str = qobject_to_json_pretty(obj); | |
493 | assert(str != NULL); | |
f382d43a | 494 | qprintf(quiet, "%s\n", qstring_get_str(str)); |
8599ea4c FS |
495 | qobject_decref(obj); |
496 | qmp_output_visitor_cleanup(ov); | |
497 | QDECREF(str); | |
498 | } | |
499 | ||
f382d43a | 500 | static void dump_human_image_check(ImageCheck *check, bool quiet) |
8599ea4c FS |
501 | { |
502 | if (!(check->corruptions || check->leaks || check->check_errors)) { | |
f382d43a | 503 | qprintf(quiet, "No errors were found on the image.\n"); |
8599ea4c FS |
504 | } else { |
505 | if (check->corruptions) { | |
f382d43a MR |
506 | qprintf(quiet, "\n%" PRId64 " errors were found on the image.\n" |
507 | "Data may be corrupted, or further writes to the image " | |
508 | "may corrupt it.\n", | |
509 | check->corruptions); | |
8599ea4c FS |
510 | } |
511 | ||
512 | if (check->leaks) { | |
f382d43a MR |
513 | qprintf(quiet, |
514 | "\n%" PRId64 " leaked clusters were found on the image.\n" | |
515 | "This means waste of disk space, but no harm to data.\n", | |
516 | check->leaks); | |
8599ea4c FS |
517 | } |
518 | ||
519 | if (check->check_errors) { | |
f382d43a MR |
520 | qprintf(quiet, |
521 | "\n%" PRId64 | |
522 | " internal errors have occurred during the check.\n", | |
523 | check->check_errors); | |
8599ea4c FS |
524 | } |
525 | } | |
526 | ||
527 | if (check->total_clusters != 0 && check->allocated_clusters != 0) { | |
f382d43a MR |
528 | qprintf(quiet, "%" PRId64 "/%" PRId64 " = %0.2f%% allocated, " |
529 | "%0.2f%% fragmented, %0.2f%% compressed clusters\n", | |
530 | check->allocated_clusters, check->total_clusters, | |
531 | check->allocated_clusters * 100.0 / check->total_clusters, | |
532 | check->fragmented_clusters * 100.0 / check->allocated_clusters, | |
533 | check->compressed_clusters * 100.0 / | |
534 | check->allocated_clusters); | |
8599ea4c FS |
535 | } |
536 | ||
537 | if (check->image_end_offset) { | |
f382d43a MR |
538 | qprintf(quiet, |
539 | "Image end offset: %" PRId64 "\n", check->image_end_offset); | |
8599ea4c FS |
540 | } |
541 | } | |
542 | ||
543 | static int collect_image_check(BlockDriverState *bs, | |
544 | ImageCheck *check, | |
545 | const char *filename, | |
546 | const char *fmt, | |
547 | int fix) | |
548 | { | |
549 | int ret; | |
550 | BdrvCheckResult result; | |
551 | ||
552 | ret = bdrv_check(bs, &result, fix); | |
553 | if (ret < 0) { | |
554 | return ret; | |
555 | } | |
556 | ||
557 | check->filename = g_strdup(filename); | |
558 | check->format = g_strdup(bdrv_get_format_name(bs)); | |
559 | check->check_errors = result.check_errors; | |
560 | check->corruptions = result.corruptions; | |
561 | check->has_corruptions = result.corruptions != 0; | |
562 | check->leaks = result.leaks; | |
563 | check->has_leaks = result.leaks != 0; | |
564 | check->corruptions_fixed = result.corruptions_fixed; | |
565 | check->has_corruptions_fixed = result.corruptions != 0; | |
566 | check->leaks_fixed = result.leaks_fixed; | |
567 | check->has_leaks_fixed = result.leaks != 0; | |
568 | check->image_end_offset = result.image_end_offset; | |
569 | check->has_image_end_offset = result.image_end_offset != 0; | |
570 | check->total_clusters = result.bfi.total_clusters; | |
571 | check->has_total_clusters = result.bfi.total_clusters != 0; | |
572 | check->allocated_clusters = result.bfi.allocated_clusters; | |
573 | check->has_allocated_clusters = result.bfi.allocated_clusters != 0; | |
574 | check->fragmented_clusters = result.bfi.fragmented_clusters; | |
575 | check->has_fragmented_clusters = result.bfi.fragmented_clusters != 0; | |
e6439d78 SH |
576 | check->compressed_clusters = result.bfi.compressed_clusters; |
577 | check->has_compressed_clusters = result.bfi.compressed_clusters != 0; | |
8599ea4c FS |
578 | |
579 | return 0; | |
580 | } | |
581 | ||
e076f338 KW |
582 | /* |
583 | * Checks an image for consistency. Exit codes: | |
584 | * | |
d6635c4d HR |
585 | * 0 - Check completed, image is good |
586 | * 1 - Check not completed because of internal errors | |
587 | * 2 - Check completed, image is corrupted | |
588 | * 3 - Check completed, image has leaked clusters, but is good otherwise | |
589 | * 63 - Checks are not supported by the image format | |
e076f338 | 590 | */ |
1585969c AL |
591 | static int img_check(int argc, char **argv) |
592 | { | |
593 | int c, ret; | |
8599ea4c | 594 | OutputFormat output_format = OFORMAT_HUMAN; |
40055951 | 595 | const char *filename, *fmt, *output, *cache; |
26f54e9a | 596 | BlockBackend *blk; |
1585969c | 597 | BlockDriverState *bs; |
4534ff54 | 598 | int fix = 0; |
ce099547 KW |
599 | int flags = BDRV_O_CHECK; |
600 | bool writethrough; | |
7e7d56d9 | 601 | ImageCheck *check; |
f382d43a | 602 | bool quiet = false; |
eb769f74 | 603 | bool image_opts = false; |
1585969c AL |
604 | |
605 | fmt = NULL; | |
8599ea4c | 606 | output = NULL; |
40055951 | 607 | cache = BDRV_DEFAULT_CACHE; |
ce099547 | 608 | |
1585969c | 609 | for(;;) { |
8599ea4c FS |
610 | int option_index = 0; |
611 | static const struct option long_options[] = { | |
612 | {"help", no_argument, 0, 'h'}, | |
613 | {"format", required_argument, 0, 'f'}, | |
4fd6a984 | 614 | {"repair", required_argument, 0, 'r'}, |
8599ea4c | 615 | {"output", required_argument, 0, OPTION_OUTPUT}, |
3babeb15 | 616 | {"object", required_argument, 0, OPTION_OBJECT}, |
eb769f74 | 617 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
8599ea4c FS |
618 | {0, 0, 0, 0} |
619 | }; | |
40055951 | 620 | c = getopt_long(argc, argv, "hf:r:T:q", |
8599ea4c | 621 | long_options, &option_index); |
b8fb60da | 622 | if (c == -1) { |
1585969c | 623 | break; |
b8fb60da | 624 | } |
1585969c | 625 | switch(c) { |
ef87394c | 626 | case '?': |
1585969c AL |
627 | case 'h': |
628 | help(); | |
629 | break; | |
630 | case 'f': | |
631 | fmt = optarg; | |
632 | break; | |
4534ff54 KW |
633 | case 'r': |
634 | flags |= BDRV_O_RDWR; | |
635 | ||
636 | if (!strcmp(optarg, "leaks")) { | |
637 | fix = BDRV_FIX_LEAKS; | |
638 | } else if (!strcmp(optarg, "all")) { | |
639 | fix = BDRV_FIX_LEAKS | BDRV_FIX_ERRORS; | |
640 | } else { | |
ac1307ab FZ |
641 | error_exit("Unknown option value for -r " |
642 | "(expecting 'leaks' or 'all'): %s", optarg); | |
4534ff54 KW |
643 | } |
644 | break; | |
8599ea4c FS |
645 | case OPTION_OUTPUT: |
646 | output = optarg; | |
647 | break; | |
40055951 HR |
648 | case 'T': |
649 | cache = optarg; | |
650 | break; | |
f382d43a MR |
651 | case 'q': |
652 | quiet = true; | |
653 | break; | |
3babeb15 DB |
654 | case OPTION_OBJECT: { |
655 | QemuOpts *opts; | |
656 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
657 | optarg, true); | |
658 | if (!opts) { | |
659 | return 1; | |
660 | } | |
661 | } break; | |
eb769f74 DB |
662 | case OPTION_IMAGE_OPTS: |
663 | image_opts = true; | |
664 | break; | |
1585969c AL |
665 | } |
666 | } | |
fc11eb26 | 667 | if (optind != argc - 1) { |
ac1307ab | 668 | error_exit("Expecting one image file name"); |
b8fb60da | 669 | } |
1585969c AL |
670 | filename = argv[optind++]; |
671 | ||
8599ea4c FS |
672 | if (output && !strcmp(output, "json")) { |
673 | output_format = OFORMAT_JSON; | |
674 | } else if (output && !strcmp(output, "human")) { | |
675 | output_format = OFORMAT_HUMAN; | |
676 | } else if (output) { | |
677 | error_report("--output must be used with human or json as argument."); | |
678 | return 1; | |
679 | } | |
680 | ||
3babeb15 DB |
681 | if (qemu_opts_foreach(&qemu_object_opts, |
682 | user_creatable_add_opts_foreach, | |
51b9b478 | 683 | NULL, NULL)) { |
3babeb15 DB |
684 | return 1; |
685 | } | |
686 | ||
ce099547 | 687 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); |
40055951 HR |
688 | if (ret < 0) { |
689 | error_report("Invalid source cache option: %s", cache); | |
690 | return 1; | |
691 | } | |
692 | ||
ce099547 | 693 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet); |
7e7d56d9 MA |
694 | if (!blk) { |
695 | return 1; | |
c2abccec | 696 | } |
7e7d56d9 | 697 | bs = blk_bs(blk); |
8599ea4c FS |
698 | |
699 | check = g_new0(ImageCheck, 1); | |
700 | ret = collect_image_check(bs, check, filename, fmt, fix); | |
e076f338 KW |
701 | |
702 | if (ret == -ENOTSUP) { | |
55d492d7 | 703 | error_report("This image format does not support checks"); |
fefddf95 | 704 | ret = 63; |
8599ea4c | 705 | goto fail; |
e076f338 KW |
706 | } |
707 | ||
8599ea4c FS |
708 | if (check->corruptions_fixed || check->leaks_fixed) { |
709 | int corruptions_fixed, leaks_fixed; | |
ccf34716 | 710 | |
8599ea4c FS |
711 | leaks_fixed = check->leaks_fixed; |
712 | corruptions_fixed = check->corruptions_fixed; | |
e076f338 | 713 | |
8599ea4c | 714 | if (output_format == OFORMAT_HUMAN) { |
f382d43a MR |
715 | qprintf(quiet, |
716 | "The following inconsistencies were found and repaired:\n\n" | |
717 | " %" PRId64 " leaked clusters\n" | |
718 | " %" PRId64 " corruptions\n\n" | |
719 | "Double checking the fixed image now...\n", | |
720 | check->leaks_fixed, | |
721 | check->corruptions_fixed); | |
e076f338 KW |
722 | } |
723 | ||
8599ea4c | 724 | ret = collect_image_check(bs, check, filename, fmt, 0); |
1585969c | 725 | |
8599ea4c FS |
726 | check->leaks_fixed = leaks_fixed; |
727 | check->corruptions_fixed = corruptions_fixed; | |
f8111c24 DXW |
728 | } |
729 | ||
832390a5 HR |
730 | if (!ret) { |
731 | switch (output_format) { | |
732 | case OFORMAT_HUMAN: | |
733 | dump_human_image_check(check, quiet); | |
734 | break; | |
735 | case OFORMAT_JSON: | |
736 | dump_json_image_check(check, quiet); | |
737 | break; | |
738 | } | |
c6bb9ad1 FS |
739 | } |
740 | ||
8599ea4c | 741 | if (ret || check->check_errors) { |
832390a5 HR |
742 | if (ret) { |
743 | error_report("Check failed: %s", strerror(-ret)); | |
744 | } else { | |
745 | error_report("Check failed"); | |
746 | } | |
8599ea4c FS |
747 | ret = 1; |
748 | goto fail; | |
c2abccec | 749 | } |
e076f338 | 750 | |
8599ea4c FS |
751 | if (check->corruptions) { |
752 | ret = 2; | |
753 | } else if (check->leaks) { | |
754 | ret = 3; | |
e076f338 | 755 | } else { |
8599ea4c | 756 | ret = 0; |
e076f338 | 757 | } |
8599ea4c FS |
758 | |
759 | fail: | |
760 | qapi_free_ImageCheck(check); | |
26f54e9a | 761 | blk_unref(blk); |
8599ea4c | 762 | return ret; |
1585969c AL |
763 | } |
764 | ||
d4a3238a HR |
765 | typedef struct CommonBlockJobCBInfo { |
766 | BlockDriverState *bs; | |
767 | Error **errp; | |
768 | } CommonBlockJobCBInfo; | |
769 | ||
770 | static void common_block_job_cb(void *opaque, int ret) | |
771 | { | |
772 | CommonBlockJobCBInfo *cbi = opaque; | |
773 | ||
774 | if (ret < 0) { | |
775 | error_setg_errno(cbi->errp, -ret, "Block job failed"); | |
776 | } | |
d4a3238a HR |
777 | } |
778 | ||
779 | static void run_block_job(BlockJob *job, Error **errp) | |
780 | { | |
b75536c9 | 781 | AioContext *aio_context = blk_get_aio_context(job->blk); |
d4a3238a HR |
782 | |
783 | do { | |
784 | aio_poll(aio_context, true); | |
62547b8a JS |
785 | qemu_progress_print(job->len ? |
786 | ((float)job->offset / job->len * 100.f) : 0.0f, 0); | |
d4a3238a HR |
787 | } while (!job->ready); |
788 | ||
789 | block_job_complete_sync(job, errp); | |
687fa1d8 HR |
790 | |
791 | /* A block job may finish instantaneously without publishing any progress, | |
792 | * so just signal completion here */ | |
793 | qemu_progress_print(100.f, 0); | |
d4a3238a HR |
794 | } |
795 | ||
ea2384d3 FB |
796 | static int img_commit(int argc, char **argv) |
797 | { | |
661a0f71 | 798 | int c, ret, flags; |
1b22bffd | 799 | const char *filename, *fmt, *cache, *base; |
26f54e9a | 800 | BlockBackend *blk; |
d4a3238a | 801 | BlockDriverState *bs, *base_bs; |
687fa1d8 | 802 | bool progress = false, quiet = false, drop = false; |
ce099547 | 803 | bool writethrough; |
d4a3238a HR |
804 | Error *local_err = NULL; |
805 | CommonBlockJobCBInfo cbi; | |
eb769f74 | 806 | bool image_opts = false; |
ea2384d3 FB |
807 | |
808 | fmt = NULL; | |
661a0f71 | 809 | cache = BDRV_DEFAULT_CACHE; |
1b22bffd | 810 | base = NULL; |
ea2384d3 | 811 | for(;;) { |
3babeb15 DB |
812 | static const struct option long_options[] = { |
813 | {"help", no_argument, 0, 'h'}, | |
814 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 815 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
816 | {0, 0, 0, 0} |
817 | }; | |
818 | c = getopt_long(argc, argv, "f:ht:b:dpq", | |
819 | long_options, NULL); | |
b8fb60da | 820 | if (c == -1) { |
ea2384d3 | 821 | break; |
b8fb60da | 822 | } |
ea2384d3 | 823 | switch(c) { |
ef87394c | 824 | case '?': |
ea2384d3 FB |
825 | case 'h': |
826 | help(); | |
827 | break; | |
828 | case 'f': | |
829 | fmt = optarg; | |
830 | break; | |
661a0f71 FS |
831 | case 't': |
832 | cache = optarg; | |
833 | break; | |
1b22bffd HR |
834 | case 'b': |
835 | base = optarg; | |
836 | /* -b implies -d */ | |
837 | drop = true; | |
838 | break; | |
9a86fe48 HR |
839 | case 'd': |
840 | drop = true; | |
841 | break; | |
687fa1d8 HR |
842 | case 'p': |
843 | progress = true; | |
844 | break; | |
f382d43a MR |
845 | case 'q': |
846 | quiet = true; | |
847 | break; | |
3babeb15 DB |
848 | case OPTION_OBJECT: { |
849 | QemuOpts *opts; | |
850 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
851 | optarg, true); | |
852 | if (!opts) { | |
853 | return 1; | |
854 | } | |
855 | } break; | |
eb769f74 DB |
856 | case OPTION_IMAGE_OPTS: |
857 | image_opts = true; | |
858 | break; | |
ea2384d3 FB |
859 | } |
860 | } | |
687fa1d8 HR |
861 | |
862 | /* Progress is not shown in Quiet mode */ | |
863 | if (quiet) { | |
864 | progress = false; | |
865 | } | |
866 | ||
fc11eb26 | 867 | if (optind != argc - 1) { |
ac1307ab | 868 | error_exit("Expecting one image file name"); |
b8fb60da | 869 | } |
ea2384d3 FB |
870 | filename = argv[optind++]; |
871 | ||
3babeb15 DB |
872 | if (qemu_opts_foreach(&qemu_object_opts, |
873 | user_creatable_add_opts_foreach, | |
51b9b478 | 874 | NULL, NULL)) { |
3babeb15 DB |
875 | return 1; |
876 | } | |
877 | ||
9a86fe48 | 878 | flags = BDRV_O_RDWR | BDRV_O_UNMAP; |
ce099547 | 879 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); |
661a0f71 FS |
880 | if (ret < 0) { |
881 | error_report("Invalid cache option: %s", cache); | |
a3981eb9 | 882 | return 1; |
661a0f71 FS |
883 | } |
884 | ||
ce099547 | 885 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet); |
7e7d56d9 MA |
886 | if (!blk) { |
887 | return 1; | |
c2abccec | 888 | } |
7e7d56d9 MA |
889 | bs = blk_bs(blk); |
890 | ||
687fa1d8 HR |
891 | qemu_progress_init(progress, 1.f); |
892 | qemu_progress_print(0.f, 100); | |
893 | ||
1b22bffd HR |
894 | if (base) { |
895 | base_bs = bdrv_find_backing_image(bs, base); | |
896 | if (!base_bs) { | |
c6bd8c70 | 897 | error_setg(&local_err, QERR_BASE_NOT_FOUND, base); |
1b22bffd HR |
898 | goto done; |
899 | } | |
900 | } else { | |
901 | /* This is different from QMP, which by default uses the deepest file in | |
902 | * the backing chain (i.e., the very base); however, the traditional | |
903 | * behavior of qemu-img commit is using the immediate backing file. */ | |
760e0063 | 904 | base_bs = backing_bs(bs); |
1b22bffd HR |
905 | if (!base_bs) { |
906 | error_setg(&local_err, "Image does not have a backing file"); | |
907 | goto done; | |
908 | } | |
d4a3238a HR |
909 | } |
910 | ||
911 | cbi = (CommonBlockJobCBInfo){ | |
912 | .errp = &local_err, | |
913 | .bs = bs, | |
914 | }; | |
915 | ||
916 | commit_active_start(bs, base_bs, 0, BLOCKDEV_ON_ERROR_REPORT, | |
917 | common_block_job_cb, &cbi, &local_err); | |
918 | if (local_err) { | |
919 | goto done; | |
ea2384d3 FB |
920 | } |
921 | ||
3f09bfbc KW |
922 | /* When the block job completes, the BlockBackend reference will point to |
923 | * the old backing file. In order to avoid that the top image is already | |
924 | * deleted, so we can still empty it afterwards, increment the reference | |
925 | * counter here preemptively. */ | |
9a86fe48 | 926 | if (!drop) { |
3f09bfbc | 927 | bdrv_ref(bs); |
9a86fe48 HR |
928 | } |
929 | ||
d4a3238a | 930 | run_block_job(bs->job, &local_err); |
9a86fe48 HR |
931 | if (local_err) { |
932 | goto unref_backing; | |
933 | } | |
934 | ||
3f09bfbc KW |
935 | if (!drop && bs->drv->bdrv_make_empty) { |
936 | ret = bs->drv->bdrv_make_empty(bs); | |
9a86fe48 HR |
937 | if (ret) { |
938 | error_setg_errno(&local_err, -ret, "Could not empty %s", | |
939 | filename); | |
940 | goto unref_backing; | |
941 | } | |
942 | } | |
943 | ||
944 | unref_backing: | |
945 | if (!drop) { | |
3f09bfbc | 946 | bdrv_unref(bs); |
9a86fe48 | 947 | } |
d4a3238a HR |
948 | |
949 | done: | |
687fa1d8 HR |
950 | qemu_progress_end(); |
951 | ||
26f54e9a | 952 | blk_unref(blk); |
d4a3238a HR |
953 | |
954 | if (local_err) { | |
6936f299 | 955 | error_report_err(local_err); |
c2abccec MK |
956 | return 1; |
957 | } | |
d4a3238a HR |
958 | |
959 | qprintf(quiet, "Image committed.\n"); | |
ea2384d3 FB |
960 | return 0; |
961 | } | |
962 | ||
f58c7b35 TS |
963 | /* |
964 | * Returns true iff the first sector pointed to by 'buf' contains at least | |
965 | * a non-NUL byte. | |
966 | * | |
967 | * 'pnum' is set to the number of sectors (including and immediately following | |
968 | * the first one) that are known to be in the same allocated/unallocated state. | |
969 | */ | |
ea2384d3 FB |
970 | static int is_allocated_sectors(const uint8_t *buf, int n, int *pnum) |
971 | { | |
1a6d39fd SH |
972 | bool is_zero; |
973 | int i; | |
ea2384d3 FB |
974 | |
975 | if (n <= 0) { | |
976 | *pnum = 0; | |
977 | return 0; | |
978 | } | |
1a6d39fd | 979 | is_zero = buffer_is_zero(buf, 512); |
ea2384d3 FB |
980 | for(i = 1; i < n; i++) { |
981 | buf += 512; | |
1a6d39fd | 982 | if (is_zero != buffer_is_zero(buf, 512)) { |
ea2384d3 | 983 | break; |
1a6d39fd | 984 | } |
ea2384d3 FB |
985 | } |
986 | *pnum = i; | |
1a6d39fd | 987 | return !is_zero; |
ea2384d3 FB |
988 | } |
989 | ||
a22f123c KW |
990 | /* |
991 | * Like is_allocated_sectors, but if the buffer starts with a used sector, | |
992 | * up to 'min' consecutive sectors containing zeros are ignored. This avoids | |
993 | * breaking up write requests for only small sparse areas. | |
994 | */ | |
995 | static int is_allocated_sectors_min(const uint8_t *buf, int n, int *pnum, | |
996 | int min) | |
997 | { | |
998 | int ret; | |
999 | int num_checked, num_used; | |
1000 | ||
1001 | if (n < min) { | |
1002 | min = n; | |
1003 | } | |
1004 | ||
1005 | ret = is_allocated_sectors(buf, n, pnum); | |
1006 | if (!ret) { | |
1007 | return ret; | |
1008 | } | |
1009 | ||
1010 | num_used = *pnum; | |
1011 | buf += BDRV_SECTOR_SIZE * *pnum; | |
1012 | n -= *pnum; | |
1013 | num_checked = num_used; | |
1014 | ||
1015 | while (n > 0) { | |
1016 | ret = is_allocated_sectors(buf, n, pnum); | |
1017 | ||
1018 | buf += BDRV_SECTOR_SIZE * *pnum; | |
1019 | n -= *pnum; | |
1020 | num_checked += *pnum; | |
1021 | if (ret) { | |
1022 | num_used = num_checked; | |
1023 | } else if (*pnum >= min) { | |
1024 | break; | |
1025 | } | |
1026 | } | |
1027 | ||
1028 | *pnum = num_used; | |
1029 | return 1; | |
1030 | } | |
1031 | ||
3e85c6fd KW |
1032 | /* |
1033 | * Compares two buffers sector by sector. Returns 0 if the first sector of both | |
1034 | * buffers matches, non-zero otherwise. | |
1035 | * | |
1036 | * pnum is set to the number of sectors (including and immediately following | |
1037 | * the first one) that are known to have the same comparison result | |
1038 | */ | |
1039 | static int compare_sectors(const uint8_t *buf1, const uint8_t *buf2, int n, | |
1040 | int *pnum) | |
1041 | { | |
8c1ac475 RK |
1042 | bool res; |
1043 | int i; | |
3e85c6fd KW |
1044 | |
1045 | if (n <= 0) { | |
1046 | *pnum = 0; | |
1047 | return 0; | |
1048 | } | |
1049 | ||
1050 | res = !!memcmp(buf1, buf2, 512); | |
1051 | for(i = 1; i < n; i++) { | |
1052 | buf1 += 512; | |
1053 | buf2 += 512; | |
1054 | ||
1055 | if (!!memcmp(buf1, buf2, 512) != res) { | |
1056 | break; | |
1057 | } | |
1058 | } | |
1059 | ||
1060 | *pnum = i; | |
1061 | return res; | |
1062 | } | |
1063 | ||
80ee15a6 | 1064 | #define IO_BUF_SIZE (2 * 1024 * 1024) |
ea2384d3 | 1065 | |
d14ed18c MR |
1066 | static int64_t sectors_to_bytes(int64_t sectors) |
1067 | { | |
1068 | return sectors << BDRV_SECTOR_BITS; | |
1069 | } | |
1070 | ||
1071 | static int64_t sectors_to_process(int64_t total, int64_t from) | |
1072 | { | |
1073 | return MIN(total - from, IO_BUF_SIZE >> BDRV_SECTOR_BITS); | |
1074 | } | |
1075 | ||
1076 | /* | |
1077 | * Check if passed sectors are empty (not allocated or contain only 0 bytes) | |
1078 | * | |
1079 | * Returns 0 in case sectors are filled with 0, 1 if sectors contain non-zero | |
1080 | * data and negative value on error. | |
1081 | * | |
f1d3cd79 | 1082 | * @param blk: BlockBackend for the image |
d14ed18c MR |
1083 | * @param sect_num: Number of first sector to check |
1084 | * @param sect_count: Number of sectors to check | |
1085 | * @param filename: Name of disk file we are checking (logging purpose) | |
1086 | * @param buffer: Allocated buffer for storing read data | |
1087 | * @param quiet: Flag for quiet mode | |
1088 | */ | |
f1d3cd79 | 1089 | static int check_empty_sectors(BlockBackend *blk, int64_t sect_num, |
d14ed18c MR |
1090 | int sect_count, const char *filename, |
1091 | uint8_t *buffer, bool quiet) | |
1092 | { | |
1093 | int pnum, ret = 0; | |
9166920a EB |
1094 | ret = blk_pread(blk, sect_num << BDRV_SECTOR_BITS, buffer, |
1095 | sect_count << BDRV_SECTOR_BITS); | |
d14ed18c MR |
1096 | if (ret < 0) { |
1097 | error_report("Error while reading offset %" PRId64 " of %s: %s", | |
1098 | sectors_to_bytes(sect_num), filename, strerror(-ret)); | |
1099 | return ret; | |
1100 | } | |
1101 | ret = is_allocated_sectors(buffer, sect_count, &pnum); | |
1102 | if (ret || pnum != sect_count) { | |
1103 | qprintf(quiet, "Content mismatch at offset %" PRId64 "!\n", | |
1104 | sectors_to_bytes(ret ? sect_num : sect_num + pnum)); | |
1105 | return 1; | |
1106 | } | |
1107 | ||
1108 | return 0; | |
1109 | } | |
1110 | ||
1111 | /* | |
1112 | * Compares two images. Exit codes: | |
1113 | * | |
1114 | * 0 - Images are identical | |
1115 | * 1 - Images differ | |
1116 | * >1 - Error occurred | |
1117 | */ | |
1118 | static int img_compare(int argc, char **argv) | |
1119 | { | |
40055951 | 1120 | const char *fmt1 = NULL, *fmt2 = NULL, *cache, *filename1, *filename2; |
26f54e9a | 1121 | BlockBackend *blk1, *blk2; |
d14ed18c MR |
1122 | BlockDriverState *bs1, *bs2; |
1123 | int64_t total_sectors1, total_sectors2; | |
1124 | uint8_t *buf1 = NULL, *buf2 = NULL; | |
1125 | int pnum1, pnum2; | |
1126 | int allocated1, allocated2; | |
1127 | int ret = 0; /* return value - 0 Ident, 1 Different, >1 Error */ | |
1128 | bool progress = false, quiet = false, strict = false; | |
40055951 | 1129 | int flags; |
ce099547 | 1130 | bool writethrough; |
d14ed18c MR |
1131 | int64_t total_sectors; |
1132 | int64_t sector_num = 0; | |
1133 | int64_t nb_sectors; | |
1134 | int c, pnum; | |
d14ed18c | 1135 | uint64_t progress_base; |
eb769f74 | 1136 | bool image_opts = false; |
d14ed18c | 1137 | |
40055951 | 1138 | cache = BDRV_DEFAULT_CACHE; |
d14ed18c | 1139 | for (;;) { |
3babeb15 DB |
1140 | static const struct option long_options[] = { |
1141 | {"help", no_argument, 0, 'h'}, | |
1142 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 1143 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
1144 | {0, 0, 0, 0} |
1145 | }; | |
1146 | c = getopt_long(argc, argv, "hf:F:T:pqs", | |
1147 | long_options, NULL); | |
d14ed18c MR |
1148 | if (c == -1) { |
1149 | break; | |
1150 | } | |
1151 | switch (c) { | |
1152 | case '?': | |
1153 | case 'h': | |
1154 | help(); | |
1155 | break; | |
1156 | case 'f': | |
1157 | fmt1 = optarg; | |
1158 | break; | |
1159 | case 'F': | |
1160 | fmt2 = optarg; | |
1161 | break; | |
40055951 HR |
1162 | case 'T': |
1163 | cache = optarg; | |
1164 | break; | |
d14ed18c MR |
1165 | case 'p': |
1166 | progress = true; | |
1167 | break; | |
1168 | case 'q': | |
1169 | quiet = true; | |
1170 | break; | |
1171 | case 's': | |
1172 | strict = true; | |
1173 | break; | |
3babeb15 DB |
1174 | case OPTION_OBJECT: { |
1175 | QemuOpts *opts; | |
1176 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
1177 | optarg, true); | |
1178 | if (!opts) { | |
1179 | ret = 2; | |
1180 | goto out4; | |
1181 | } | |
1182 | } break; | |
eb769f74 DB |
1183 | case OPTION_IMAGE_OPTS: |
1184 | image_opts = true; | |
1185 | break; | |
d14ed18c MR |
1186 | } |
1187 | } | |
1188 | ||
1189 | /* Progress is not shown in Quiet mode */ | |
1190 | if (quiet) { | |
1191 | progress = false; | |
1192 | } | |
1193 | ||
1194 | ||
fc11eb26 | 1195 | if (optind != argc - 2) { |
ac1307ab | 1196 | error_exit("Expecting two image file names"); |
d14ed18c MR |
1197 | } |
1198 | filename1 = argv[optind++]; | |
1199 | filename2 = argv[optind++]; | |
1200 | ||
3babeb15 DB |
1201 | if (qemu_opts_foreach(&qemu_object_opts, |
1202 | user_creatable_add_opts_foreach, | |
51b9b478 | 1203 | NULL, NULL)) { |
3babeb15 DB |
1204 | ret = 2; |
1205 | goto out4; | |
1206 | } | |
1207 | ||
cbda016d SH |
1208 | /* Initialize before goto out */ |
1209 | qemu_progress_init(progress, 2.0); | |
1210 | ||
ce099547 KW |
1211 | flags = 0; |
1212 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); | |
40055951 HR |
1213 | if (ret < 0) { |
1214 | error_report("Invalid source cache option: %s", cache); | |
1215 | ret = 2; | |
1216 | goto out3; | |
1217 | } | |
1218 | ||
ce099547 | 1219 | blk1 = img_open(image_opts, filename1, fmt1, flags, writethrough, quiet); |
7e7d56d9 | 1220 | if (!blk1) { |
d14ed18c | 1221 | ret = 2; |
7e7d56d9 | 1222 | goto out3; |
d14ed18c MR |
1223 | } |
1224 | ||
ce099547 | 1225 | blk2 = img_open(image_opts, filename2, fmt2, flags, writethrough, quiet); |
7e7d56d9 | 1226 | if (!blk2) { |
d14ed18c | 1227 | ret = 2; |
7e7d56d9 | 1228 | goto out2; |
d14ed18c | 1229 | } |
eb769f74 | 1230 | bs1 = blk_bs(blk1); |
7e7d56d9 | 1231 | bs2 = blk_bs(blk2); |
d14ed18c | 1232 | |
f1d3cd79 HR |
1233 | buf1 = blk_blockalign(blk1, IO_BUF_SIZE); |
1234 | buf2 = blk_blockalign(blk2, IO_BUF_SIZE); | |
1235 | total_sectors1 = blk_nb_sectors(blk1); | |
52bf1e72 MA |
1236 | if (total_sectors1 < 0) { |
1237 | error_report("Can't get size of %s: %s", | |
1238 | filename1, strerror(-total_sectors1)); | |
1239 | ret = 4; | |
1240 | goto out; | |
1241 | } | |
f1d3cd79 | 1242 | total_sectors2 = blk_nb_sectors(blk2); |
52bf1e72 MA |
1243 | if (total_sectors2 < 0) { |
1244 | error_report("Can't get size of %s: %s", | |
1245 | filename2, strerror(-total_sectors2)); | |
1246 | ret = 4; | |
1247 | goto out; | |
1248 | } | |
d14ed18c MR |
1249 | total_sectors = MIN(total_sectors1, total_sectors2); |
1250 | progress_base = MAX(total_sectors1, total_sectors2); | |
1251 | ||
1252 | qemu_progress_print(0, 100); | |
1253 | ||
1254 | if (strict && total_sectors1 != total_sectors2) { | |
1255 | ret = 1; | |
1256 | qprintf(quiet, "Strict mode: Image size mismatch!\n"); | |
1257 | goto out; | |
1258 | } | |
1259 | ||
1260 | for (;;) { | |
25ad8e6e | 1261 | int64_t status1, status2; |
67a0fd2a FZ |
1262 | BlockDriverState *file; |
1263 | ||
d14ed18c MR |
1264 | nb_sectors = sectors_to_process(total_sectors, sector_num); |
1265 | if (nb_sectors <= 0) { | |
1266 | break; | |
1267 | } | |
25ad8e6e FZ |
1268 | status1 = bdrv_get_block_status_above(bs1, NULL, sector_num, |
1269 | total_sectors1 - sector_num, | |
67a0fd2a | 1270 | &pnum1, &file); |
25ad8e6e | 1271 | if (status1 < 0) { |
d14ed18c MR |
1272 | ret = 3; |
1273 | error_report("Sector allocation test failed for %s", filename1); | |
1274 | goto out; | |
1275 | } | |
25ad8e6e | 1276 | allocated1 = status1 & BDRV_BLOCK_ALLOCATED; |
d14ed18c | 1277 | |
25ad8e6e FZ |
1278 | status2 = bdrv_get_block_status_above(bs2, NULL, sector_num, |
1279 | total_sectors2 - sector_num, | |
67a0fd2a | 1280 | &pnum2, &file); |
25ad8e6e | 1281 | if (status2 < 0) { |
d14ed18c MR |
1282 | ret = 3; |
1283 | error_report("Sector allocation test failed for %s", filename2); | |
1284 | goto out; | |
1285 | } | |
25ad8e6e FZ |
1286 | allocated2 = status2 & BDRV_BLOCK_ALLOCATED; |
1287 | if (pnum1) { | |
1288 | nb_sectors = MIN(nb_sectors, pnum1); | |
1289 | } | |
1290 | if (pnum2) { | |
1291 | nb_sectors = MIN(nb_sectors, pnum2); | |
1292 | } | |
d14ed18c | 1293 | |
25ad8e6e FZ |
1294 | if (strict) { |
1295 | if ((status1 & ~BDRV_BLOCK_OFFSET_MASK) != | |
1296 | (status2 & ~BDRV_BLOCK_OFFSET_MASK)) { | |
1297 | ret = 1; | |
1298 | qprintf(quiet, "Strict mode: Offset %" PRId64 | |
1299 | " block status mismatch!\n", | |
1300 | sectors_to_bytes(sector_num)); | |
1301 | goto out; | |
1302 | } | |
1303 | } | |
1304 | if ((status1 & BDRV_BLOCK_ZERO) && (status2 & BDRV_BLOCK_ZERO)) { | |
1305 | nb_sectors = MIN(pnum1, pnum2); | |
1306 | } else if (allocated1 == allocated2) { | |
d14ed18c | 1307 | if (allocated1) { |
9166920a EB |
1308 | ret = blk_pread(blk1, sector_num << BDRV_SECTOR_BITS, buf1, |
1309 | nb_sectors << BDRV_SECTOR_BITS); | |
d14ed18c MR |
1310 | if (ret < 0) { |
1311 | error_report("Error while reading offset %" PRId64 " of %s:" | |
1312 | " %s", sectors_to_bytes(sector_num), filename1, | |
1313 | strerror(-ret)); | |
1314 | ret = 4; | |
1315 | goto out; | |
1316 | } | |
9166920a EB |
1317 | ret = blk_pread(blk2, sector_num << BDRV_SECTOR_BITS, buf2, |
1318 | nb_sectors << BDRV_SECTOR_BITS); | |
d14ed18c MR |
1319 | if (ret < 0) { |
1320 | error_report("Error while reading offset %" PRId64 | |
1321 | " of %s: %s", sectors_to_bytes(sector_num), | |
1322 | filename2, strerror(-ret)); | |
1323 | ret = 4; | |
1324 | goto out; | |
1325 | } | |
1326 | ret = compare_sectors(buf1, buf2, nb_sectors, &pnum); | |
1327 | if (ret || pnum != nb_sectors) { | |
d14ed18c MR |
1328 | qprintf(quiet, "Content mismatch at offset %" PRId64 "!\n", |
1329 | sectors_to_bytes( | |
1330 | ret ? sector_num : sector_num + pnum)); | |
36452f12 | 1331 | ret = 1; |
d14ed18c MR |
1332 | goto out; |
1333 | } | |
1334 | } | |
1335 | } else { | |
d14ed18c MR |
1336 | |
1337 | if (allocated1) { | |
f1d3cd79 | 1338 | ret = check_empty_sectors(blk1, sector_num, nb_sectors, |
d14ed18c MR |
1339 | filename1, buf1, quiet); |
1340 | } else { | |
f1d3cd79 | 1341 | ret = check_empty_sectors(blk2, sector_num, nb_sectors, |
d14ed18c MR |
1342 | filename2, buf1, quiet); |
1343 | } | |
1344 | if (ret) { | |
1345 | if (ret < 0) { | |
d14ed18c MR |
1346 | error_report("Error while reading offset %" PRId64 ": %s", |
1347 | sectors_to_bytes(sector_num), strerror(-ret)); | |
36452f12 | 1348 | ret = 4; |
d14ed18c MR |
1349 | } |
1350 | goto out; | |
1351 | } | |
1352 | } | |
1353 | sector_num += nb_sectors; | |
1354 | qemu_progress_print(((float) nb_sectors / progress_base)*100, 100); | |
1355 | } | |
1356 | ||
1357 | if (total_sectors1 != total_sectors2) { | |
f1d3cd79 | 1358 | BlockBackend *blk_over; |
d14ed18c MR |
1359 | int64_t total_sectors_over; |
1360 | const char *filename_over; | |
1361 | ||
1362 | qprintf(quiet, "Warning: Image size mismatch!\n"); | |
1363 | if (total_sectors1 > total_sectors2) { | |
1364 | total_sectors_over = total_sectors1; | |
f1d3cd79 | 1365 | blk_over = blk1; |
d14ed18c MR |
1366 | filename_over = filename1; |
1367 | } else { | |
1368 | total_sectors_over = total_sectors2; | |
f1d3cd79 | 1369 | blk_over = blk2; |
d14ed18c MR |
1370 | filename_over = filename2; |
1371 | } | |
1372 | ||
1373 | for (;;) { | |
1374 | nb_sectors = sectors_to_process(total_sectors_over, sector_num); | |
1375 | if (nb_sectors <= 0) { | |
1376 | break; | |
1377 | } | |
f1d3cd79 | 1378 | ret = bdrv_is_allocated_above(blk_bs(blk_over), NULL, sector_num, |
d14ed18c MR |
1379 | nb_sectors, &pnum); |
1380 | if (ret < 0) { | |
1381 | ret = 3; | |
1382 | error_report("Sector allocation test failed for %s", | |
1383 | filename_over); | |
1384 | goto out; | |
1385 | ||
1386 | } | |
1387 | nb_sectors = pnum; | |
1388 | if (ret) { | |
f1d3cd79 | 1389 | ret = check_empty_sectors(blk_over, sector_num, nb_sectors, |
d14ed18c MR |
1390 | filename_over, buf1, quiet); |
1391 | if (ret) { | |
1392 | if (ret < 0) { | |
d14ed18c MR |
1393 | error_report("Error while reading offset %" PRId64 |
1394 | " of %s: %s", sectors_to_bytes(sector_num), | |
1395 | filename_over, strerror(-ret)); | |
36452f12 | 1396 | ret = 4; |
d14ed18c MR |
1397 | } |
1398 | goto out; | |
1399 | } | |
1400 | } | |
1401 | sector_num += nb_sectors; | |
1402 | qemu_progress_print(((float) nb_sectors / progress_base)*100, 100); | |
1403 | } | |
1404 | } | |
1405 | ||
1406 | qprintf(quiet, "Images are identical.\n"); | |
1407 | ret = 0; | |
1408 | ||
1409 | out: | |
d14ed18c MR |
1410 | qemu_vfree(buf1); |
1411 | qemu_vfree(buf2); | |
26f54e9a | 1412 | blk_unref(blk2); |
d14ed18c | 1413 | out2: |
26f54e9a | 1414 | blk_unref(blk1); |
d14ed18c MR |
1415 | out3: |
1416 | qemu_progress_end(); | |
3babeb15 | 1417 | out4: |
d14ed18c MR |
1418 | return ret; |
1419 | } | |
1420 | ||
690c7301 KW |
1421 | enum ImgConvertBlockStatus { |
1422 | BLK_DATA, | |
1423 | BLK_ZERO, | |
1424 | BLK_BACKING_FILE, | |
1425 | }; | |
1426 | ||
1427 | typedef struct ImgConvertState { | |
1428 | BlockBackend **src; | |
1429 | int64_t *src_sectors; | |
1430 | int src_cur, src_num; | |
1431 | int64_t src_cur_offset; | |
1432 | int64_t total_sectors; | |
1433 | int64_t allocated_sectors; | |
1434 | enum ImgConvertBlockStatus status; | |
1435 | int64_t sector_next_status; | |
1436 | BlockBackend *target; | |
1437 | bool has_zero_init; | |
1438 | bool compressed; | |
1439 | bool target_has_backing; | |
1440 | int min_sparse; | |
1441 | size_t cluster_sectors; | |
1442 | size_t buf_sectors; | |
1443 | } ImgConvertState; | |
1444 | ||
1445 | static void convert_select_part(ImgConvertState *s, int64_t sector_num) | |
1446 | { | |
1447 | assert(sector_num >= s->src_cur_offset); | |
1448 | while (sector_num - s->src_cur_offset >= s->src_sectors[s->src_cur]) { | |
1449 | s->src_cur_offset += s->src_sectors[s->src_cur]; | |
1450 | s->src_cur++; | |
1451 | assert(s->src_cur < s->src_num); | |
1452 | } | |
1453 | } | |
1454 | ||
1455 | static int convert_iteration_sectors(ImgConvertState *s, int64_t sector_num) | |
1456 | { | |
1457 | int64_t ret; | |
1458 | int n; | |
1459 | ||
1460 | convert_select_part(s, sector_num); | |
1461 | ||
1462 | assert(s->total_sectors > sector_num); | |
1463 | n = MIN(s->total_sectors - sector_num, BDRV_REQUEST_MAX_SECTORS); | |
1464 | ||
1465 | if (s->sector_next_status <= sector_num) { | |
67a0fd2a | 1466 | BlockDriverState *file; |
690c7301 KW |
1467 | ret = bdrv_get_block_status(blk_bs(s->src[s->src_cur]), |
1468 | sector_num - s->src_cur_offset, | |
67a0fd2a | 1469 | n, &n, &file); |
690c7301 KW |
1470 | if (ret < 0) { |
1471 | return ret; | |
1472 | } | |
1473 | ||
1474 | if (ret & BDRV_BLOCK_ZERO) { | |
1475 | s->status = BLK_ZERO; | |
1476 | } else if (ret & BDRV_BLOCK_DATA) { | |
1477 | s->status = BLK_DATA; | |
1478 | } else if (!s->target_has_backing) { | |
1479 | /* Without a target backing file we must copy over the contents of | |
1480 | * the backing file as well. */ | |
263a6f4c | 1481 | /* Check block status of the backing file chain to avoid |
690c7301 KW |
1482 | * needlessly reading zeroes and limiting the iteration to the |
1483 | * buffer size */ | |
263a6f4c RK |
1484 | ret = bdrv_get_block_status_above(blk_bs(s->src[s->src_cur]), NULL, |
1485 | sector_num - s->src_cur_offset, | |
1486 | n, &n, &file); | |
1487 | if (ret < 0) { | |
1488 | return ret; | |
1489 | } | |
1490 | ||
1491 | if (ret & BDRV_BLOCK_ZERO) { | |
1492 | s->status = BLK_ZERO; | |
1493 | } else { | |
1494 | s->status = BLK_DATA; | |
1495 | } | |
690c7301 KW |
1496 | } else { |
1497 | s->status = BLK_BACKING_FILE; | |
1498 | } | |
1499 | ||
1500 | s->sector_next_status = sector_num + n; | |
1501 | } | |
1502 | ||
1503 | n = MIN(n, s->sector_next_status - sector_num); | |
1504 | if (s->status == BLK_DATA) { | |
1505 | n = MIN(n, s->buf_sectors); | |
1506 | } | |
1507 | ||
1508 | /* We need to write complete clusters for compressed images, so if an | |
1509 | * unallocated area is shorter than that, we must consider the whole | |
1510 | * cluster allocated. */ | |
1511 | if (s->compressed) { | |
1512 | if (n < s->cluster_sectors) { | |
1513 | n = MIN(s->cluster_sectors, s->total_sectors - sector_num); | |
1514 | s->status = BLK_DATA; | |
1515 | } else { | |
1516 | n = QEMU_ALIGN_DOWN(n, s->cluster_sectors); | |
1517 | } | |
1518 | } | |
1519 | ||
1520 | return n; | |
1521 | } | |
1522 | ||
1523 | static int convert_read(ImgConvertState *s, int64_t sector_num, int nb_sectors, | |
1524 | uint8_t *buf) | |
1525 | { | |
1526 | int n; | |
1527 | int ret; | |
1528 | ||
690c7301 KW |
1529 | assert(nb_sectors <= s->buf_sectors); |
1530 | while (nb_sectors > 0) { | |
1531 | BlockBackend *blk; | |
1532 | int64_t bs_sectors; | |
1533 | ||
1534 | /* In the case of compression with multiple source files, we can get a | |
1535 | * nb_sectors that spreads into the next part. So we must be able to | |
1536 | * read across multiple BDSes for one convert_read() call. */ | |
1537 | convert_select_part(s, sector_num); | |
1538 | blk = s->src[s->src_cur]; | |
1539 | bs_sectors = s->src_sectors[s->src_cur]; | |
1540 | ||
1541 | n = MIN(nb_sectors, bs_sectors - (sector_num - s->src_cur_offset)); | |
9166920a EB |
1542 | ret = blk_pread(blk, |
1543 | (sector_num - s->src_cur_offset) << BDRV_SECTOR_BITS, | |
1544 | buf, n << BDRV_SECTOR_BITS); | |
690c7301 KW |
1545 | if (ret < 0) { |
1546 | return ret; | |
1547 | } | |
1548 | ||
1549 | sector_num += n; | |
1550 | nb_sectors -= n; | |
1551 | buf += n * BDRV_SECTOR_SIZE; | |
1552 | } | |
1553 | ||
1554 | return 0; | |
1555 | } | |
1556 | ||
1557 | static int convert_write(ImgConvertState *s, int64_t sector_num, int nb_sectors, | |
1558 | const uint8_t *buf) | |
1559 | { | |
1560 | int ret; | |
1561 | ||
1562 | while (nb_sectors > 0) { | |
1563 | int n = nb_sectors; | |
1564 | ||
1565 | switch (s->status) { | |
1566 | case BLK_BACKING_FILE: | |
1567 | /* If we have a backing file, leave clusters unallocated that are | |
1568 | * unallocated in the source image, so that the backing file is | |
1569 | * visible at the respective offset. */ | |
1570 | assert(s->target_has_backing); | |
1571 | break; | |
1572 | ||
1573 | case BLK_DATA: | |
1574 | /* We must always write compressed clusters as a whole, so don't | |
1575 | * try to find zeroed parts in the buffer. We can only save the | |
1576 | * write if the buffer is completely zeroed and we're allowed to | |
1577 | * keep the target sparse. */ | |
1578 | if (s->compressed) { | |
1579 | if (s->has_zero_init && s->min_sparse && | |
1580 | buffer_is_zero(buf, n * BDRV_SECTOR_SIZE)) | |
1581 | { | |
1582 | assert(!s->target_has_backing); | |
1583 | break; | |
1584 | } | |
1585 | ||
1586 | ret = blk_write_compressed(s->target, sector_num, buf, n); | |
1587 | if (ret < 0) { | |
1588 | return ret; | |
1589 | } | |
1590 | break; | |
1591 | } | |
1592 | ||
1593 | /* If there is real non-zero data or we're told to keep the target | |
1594 | * fully allocated (-S 0), we must write it. Otherwise we can treat | |
1595 | * it as zero sectors. */ | |
1596 | if (!s->min_sparse || | |
1597 | is_allocated_sectors_min(buf, n, &n, s->min_sparse)) | |
1598 | { | |
9166920a EB |
1599 | ret = blk_pwrite(s->target, sector_num << BDRV_SECTOR_BITS, |
1600 | buf, n << BDRV_SECTOR_BITS, 0); | |
690c7301 KW |
1601 | if (ret < 0) { |
1602 | return ret; | |
1603 | } | |
1604 | break; | |
1605 | } | |
1606 | /* fall-through */ | |
1607 | ||
1608 | case BLK_ZERO: | |
1609 | if (s->has_zero_init) { | |
1610 | break; | |
1611 | } | |
d004bd52 EB |
1612 | ret = blk_pwrite_zeroes(s->target, sector_num << BDRV_SECTOR_BITS, |
1613 | n << BDRV_SECTOR_BITS, 0); | |
690c7301 KW |
1614 | if (ret < 0) { |
1615 | return ret; | |
1616 | } | |
1617 | break; | |
1618 | } | |
1619 | ||
1620 | sector_num += n; | |
1621 | nb_sectors -= n; | |
1622 | buf += n * BDRV_SECTOR_SIZE; | |
1623 | } | |
1624 | ||
1625 | return 0; | |
1626 | } | |
1627 | ||
1628 | static int convert_do_copy(ImgConvertState *s) | |
1629 | { | |
1630 | uint8_t *buf = NULL; | |
1631 | int64_t sector_num, allocated_done; | |
1632 | int ret; | |
1633 | int n; | |
1634 | ||
1635 | /* Check whether we have zero initialisation or can get it efficiently */ | |
1636 | s->has_zero_init = s->min_sparse && !s->target_has_backing | |
1637 | ? bdrv_has_zero_init(blk_bs(s->target)) | |
1638 | : false; | |
1639 | ||
1640 | if (!s->has_zero_init && !s->target_has_backing && | |
1641 | bdrv_can_write_zeroes_with_unmap(blk_bs(s->target))) | |
1642 | { | |
1643 | ret = bdrv_make_zero(blk_bs(s->target), BDRV_REQ_MAY_UNMAP); | |
1644 | if (ret == 0) { | |
1645 | s->has_zero_init = true; | |
1646 | } | |
1647 | } | |
1648 | ||
1649 | /* Allocate buffer for copied data. For compressed images, only one cluster | |
1650 | * can be copied at a time. */ | |
1651 | if (s->compressed) { | |
1652 | if (s->cluster_sectors <= 0 || s->cluster_sectors > s->buf_sectors) { | |
1653 | error_report("invalid cluster size"); | |
1654 | ret = -EINVAL; | |
1655 | goto fail; | |
1656 | } | |
1657 | s->buf_sectors = s->cluster_sectors; | |
1658 | } | |
1659 | buf = blk_blockalign(s->target, s->buf_sectors * BDRV_SECTOR_SIZE); | |
1660 | ||
1661 | /* Calculate allocated sectors for progress */ | |
1662 | s->allocated_sectors = 0; | |
1663 | sector_num = 0; | |
1664 | while (sector_num < s->total_sectors) { | |
1665 | n = convert_iteration_sectors(s, sector_num); | |
1666 | if (n < 0) { | |
1667 | ret = n; | |
1668 | goto fail; | |
1669 | } | |
aad15de4 HR |
1670 | if (s->status == BLK_DATA || (!s->min_sparse && s->status == BLK_ZERO)) |
1671 | { | |
690c7301 KW |
1672 | s->allocated_sectors += n; |
1673 | } | |
1674 | sector_num += n; | |
1675 | } | |
1676 | ||
1677 | /* Do the copy */ | |
1678 | s->src_cur = 0; | |
1679 | s->src_cur_offset = 0; | |
1680 | s->sector_next_status = 0; | |
1681 | ||
1682 | sector_num = 0; | |
1683 | allocated_done = 0; | |
1684 | ||
1685 | while (sector_num < s->total_sectors) { | |
1686 | n = convert_iteration_sectors(s, sector_num); | |
1687 | if (n < 0) { | |
1688 | ret = n; | |
1689 | goto fail; | |
1690 | } | |
aad15de4 HR |
1691 | if (s->status == BLK_DATA || (!s->min_sparse && s->status == BLK_ZERO)) |
1692 | { | |
690c7301 KW |
1693 | allocated_done += n; |
1694 | qemu_progress_print(100.0 * allocated_done / s->allocated_sectors, | |
1695 | 0); | |
1696 | } | |
1697 | ||
aad15de4 HR |
1698 | if (s->status == BLK_DATA) { |
1699 | ret = convert_read(s, sector_num, n, buf); | |
1700 | if (ret < 0) { | |
1701 | error_report("error while reading sector %" PRId64 | |
1702 | ": %s", sector_num, strerror(-ret)); | |
1703 | goto fail; | |
1704 | } | |
1705 | } else if (!s->min_sparse && s->status == BLK_ZERO) { | |
1706 | n = MIN(n, s->buf_sectors); | |
1707 | memset(buf, 0, n * BDRV_SECTOR_SIZE); | |
1708 | s->status = BLK_DATA; | |
690c7301 KW |
1709 | } |
1710 | ||
1711 | ret = convert_write(s, sector_num, n, buf); | |
1712 | if (ret < 0) { | |
1713 | error_report("error while writing sector %" PRId64 | |
1714 | ": %s", sector_num, strerror(-ret)); | |
1715 | goto fail; | |
1716 | } | |
1717 | ||
1718 | sector_num += n; | |
1719 | } | |
1720 | ||
1721 | if (s->compressed) { | |
1722 | /* signal EOF to align */ | |
1723 | ret = blk_write_compressed(s->target, 0, NULL, 0); | |
1724 | if (ret < 0) { | |
1725 | goto fail; | |
1726 | } | |
1727 | } | |
1728 | ||
1729 | ret = 0; | |
1730 | fail: | |
1731 | qemu_vfree(buf); | |
1732 | return ret; | |
1733 | } | |
1734 | ||
ea2384d3 FB |
1735 | static int img_convert(int argc, char **argv) |
1736 | { | |
690c7301 | 1737 | int c, bs_n, bs_i, compress, cluster_sectors, skip_create; |
13c28af8 | 1738 | int64_t ret = 0; |
40055951 | 1739 | int progress = 0, flags, src_flags; |
ce099547 | 1740 | bool writethrough, src_writethrough; |
40055951 | 1741 | const char *fmt, *out_fmt, *cache, *src_cache, *out_baseimg, *out_filename; |
b50cbabc | 1742 | BlockDriver *drv, *proto_drv; |
26f54e9a | 1743 | BlockBackend **blk = NULL, *out_blk = NULL; |
c2abccec | 1744 | BlockDriverState **bs = NULL, *out_bs = NULL; |
690c7301 | 1745 | int64_t total_sectors; |
52bf1e72 | 1746 | int64_t *bs_sectors = NULL; |
f2521c90 | 1747 | size_t bufsectors = IO_BUF_SIZE / BDRV_SECTOR_SIZE; |
faea38e7 | 1748 | BlockDriverInfo bdi; |
83d0521a CL |
1749 | QemuOpts *opts = NULL; |
1750 | QemuOptsList *create_opts = NULL; | |
1751 | const char *out_baseimg_param; | |
efa84d43 | 1752 | char *options = NULL; |
51ef6727 | 1753 | const char *snapshot_name = NULL; |
a22f123c | 1754 | int min_sparse = 8; /* Need at least 4k of zeros for sparse detection */ |
f382d43a | 1755 | bool quiet = false; |
cc84d90f | 1756 | Error *local_err = NULL; |
ef80654d | 1757 | QemuOpts *sn_opts = NULL; |
690c7301 | 1758 | ImgConvertState state; |
eb769f74 | 1759 | bool image_opts = false; |
ea2384d3 FB |
1760 | |
1761 | fmt = NULL; | |
1762 | out_fmt = "raw"; | |
661a0f71 | 1763 | cache = "unsafe"; |
40055951 | 1764 | src_cache = BDRV_DEFAULT_CACHE; |
f58c7b35 | 1765 | out_baseimg = NULL; |
eec77d9e | 1766 | compress = 0; |
b2e10493 | 1767 | skip_create = 0; |
ea2384d3 | 1768 | for(;;) { |
3babeb15 DB |
1769 | static const struct option long_options[] = { |
1770 | {"help", no_argument, 0, 'h'}, | |
1771 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 1772 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
1773 | {0, 0, 0, 0} |
1774 | }; | |
1775 | c = getopt_long(argc, argv, "hf:O:B:ce6o:s:l:S:pt:T:qn", | |
1776 | long_options, NULL); | |
b8fb60da | 1777 | if (c == -1) { |
ea2384d3 | 1778 | break; |
b8fb60da | 1779 | } |
ea2384d3 | 1780 | switch(c) { |
ef87394c | 1781 | case '?': |
ea2384d3 FB |
1782 | case 'h': |
1783 | help(); | |
1784 | break; | |
1785 | case 'f': | |
1786 | fmt = optarg; | |
1787 | break; | |
1788 | case 'O': | |
1789 | out_fmt = optarg; | |
1790 | break; | |
f58c7b35 TS |
1791 | case 'B': |
1792 | out_baseimg = optarg; | |
1793 | break; | |
ea2384d3 | 1794 | case 'c': |
eec77d9e | 1795 | compress = 1; |
ea2384d3 FB |
1796 | break; |
1797 | case 'e': | |
9d42e15d | 1798 | error_report("option -e is deprecated, please use \'-o " |
eec77d9e | 1799 | "encryption\' instead!"); |
2dc8328b | 1800 | ret = -1; |
64bb01aa | 1801 | goto fail_getopt; |
ec36ba14 | 1802 | case '6': |
9d42e15d | 1803 | error_report("option -6 is deprecated, please use \'-o " |
eec77d9e | 1804 | "compat6\' instead!"); |
2dc8328b | 1805 | ret = -1; |
64bb01aa | 1806 | goto fail_getopt; |
efa84d43 | 1807 | case 'o': |
2dc8328b KW |
1808 | if (!is_valid_option_list(optarg)) { |
1809 | error_report("Invalid option list: %s", optarg); | |
1810 | ret = -1; | |
64bb01aa | 1811 | goto fail_getopt; |
2dc8328b KW |
1812 | } |
1813 | if (!options) { | |
1814 | options = g_strdup(optarg); | |
1815 | } else { | |
1816 | char *old_options = options; | |
1817 | options = g_strdup_printf("%s,%s", options, optarg); | |
1818 | g_free(old_options); | |
1819 | } | |
efa84d43 | 1820 | break; |
51ef6727 | 1821 | case 's': |
1822 | snapshot_name = optarg; | |
1823 | break; | |
ef80654d WX |
1824 | case 'l': |
1825 | if (strstart(optarg, SNAPSHOT_OPT_BASE, NULL)) { | |
70b94331 MA |
1826 | sn_opts = qemu_opts_parse_noisily(&internal_snapshot_opts, |
1827 | optarg, false); | |
ef80654d WX |
1828 | if (!sn_opts) { |
1829 | error_report("Failed in parsing snapshot param '%s'", | |
1830 | optarg); | |
2dc8328b | 1831 | ret = -1; |
64bb01aa | 1832 | goto fail_getopt; |
ef80654d WX |
1833 | } |
1834 | } else { | |
1835 | snapshot_name = optarg; | |
1836 | } | |
1837 | break; | |
a22f123c KW |
1838 | case 'S': |
1839 | { | |
1840 | int64_t sval; | |
e36b3695 | 1841 | char *end; |
4677bb40 | 1842 | sval = qemu_strtosz_suffix(optarg, &end, QEMU_STRTOSZ_DEFSUFFIX_B); |
e36b3695 | 1843 | if (sval < 0 || *end) { |
a22f123c | 1844 | error_report("Invalid minimum zero buffer size for sparse output specified"); |
2dc8328b | 1845 | ret = -1; |
64bb01aa | 1846 | goto fail_getopt; |
a22f123c KW |
1847 | } |
1848 | ||
1849 | min_sparse = sval / BDRV_SECTOR_SIZE; | |
1850 | break; | |
1851 | } | |
6b837bc4 JS |
1852 | case 'p': |
1853 | progress = 1; | |
1854 | break; | |
661a0f71 FS |
1855 | case 't': |
1856 | cache = optarg; | |
1857 | break; | |
40055951 HR |
1858 | case 'T': |
1859 | src_cache = optarg; | |
1860 | break; | |
f382d43a MR |
1861 | case 'q': |
1862 | quiet = true; | |
1863 | break; | |
b2e10493 AD |
1864 | case 'n': |
1865 | skip_create = 1; | |
1866 | break; | |
3babeb15 DB |
1867 | case OPTION_OBJECT: |
1868 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
1869 | optarg, true); | |
1870 | if (!opts) { | |
1871 | goto fail_getopt; | |
1872 | } | |
1873 | break; | |
eb769f74 DB |
1874 | case OPTION_IMAGE_OPTS: |
1875 | image_opts = true; | |
1876 | break; | |
ea2384d3 FB |
1877 | } |
1878 | } | |
3b46e624 | 1879 | |
3babeb15 DB |
1880 | if (qemu_opts_foreach(&qemu_object_opts, |
1881 | user_creatable_add_opts_foreach, | |
51b9b478 | 1882 | NULL, NULL)) { |
3babeb15 DB |
1883 | goto fail_getopt; |
1884 | } | |
1885 | ||
64bb01aa | 1886 | /* Initialize before goto out */ |
f382d43a MR |
1887 | if (quiet) { |
1888 | progress = 0; | |
1889 | } | |
64bb01aa KW |
1890 | qemu_progress_init(progress, 1.0); |
1891 | ||
926c2d23 | 1892 | bs_n = argc - optind - 1; |
a283cb6e | 1893 | out_filename = bs_n >= 1 ? argv[argc - 1] : NULL; |
f58c7b35 | 1894 | |
2dc8328b | 1895 | if (options && has_help_option(options)) { |
4ac8aacd JS |
1896 | ret = print_block_option_help(out_filename, out_fmt); |
1897 | goto out; | |
1898 | } | |
1899 | ||
a283cb6e | 1900 | if (bs_n < 1) { |
ac1307ab | 1901 | error_exit("Must specify image file name"); |
a283cb6e KW |
1902 | } |
1903 | ||
1904 | ||
c2abccec | 1905 | if (bs_n > 1 && out_baseimg) { |
15654a6d JS |
1906 | error_report("-B makes no sense when concatenating multiple input " |
1907 | "images"); | |
31ca34b8 JS |
1908 | ret = -1; |
1909 | goto out; | |
c2abccec | 1910 | } |
f8111c24 | 1911 | |
ce099547 KW |
1912 | src_flags = 0; |
1913 | ret = bdrv_parse_cache_mode(src_cache, &src_flags, &src_writethrough); | |
40055951 HR |
1914 | if (ret < 0) { |
1915 | error_report("Invalid source cache option: %s", src_cache); | |
1916 | goto out; | |
1917 | } | |
1918 | ||
6b837bc4 JS |
1919 | qemu_progress_print(0, 100); |
1920 | ||
26f54e9a | 1921 | blk = g_new0(BlockBackend *, bs_n); |
d739f1c4 | 1922 | bs = g_new0(BlockDriverState *, bs_n); |
52bf1e72 | 1923 | bs_sectors = g_new(int64_t, bs_n); |
926c2d23 AZ |
1924 | |
1925 | total_sectors = 0; | |
1926 | for (bs_i = 0; bs_i < bs_n; bs_i++) { | |
efaa7c4e | 1927 | blk[bs_i] = img_open(image_opts, argv[optind + bs_i], |
ce099547 | 1928 | fmt, src_flags, src_writethrough, quiet); |
7e7d56d9 | 1929 | if (!blk[bs_i]) { |
c2abccec MK |
1930 | ret = -1; |
1931 | goto out; | |
1932 | } | |
7e7d56d9 | 1933 | bs[bs_i] = blk_bs(blk[bs_i]); |
f1d3cd79 | 1934 | bs_sectors[bs_i] = blk_nb_sectors(blk[bs_i]); |
52bf1e72 MA |
1935 | if (bs_sectors[bs_i] < 0) { |
1936 | error_report("Could not get size of %s: %s", | |
1937 | argv[optind + bs_i], strerror(-bs_sectors[bs_i])); | |
1938 | ret = -1; | |
1939 | goto out; | |
1940 | } | |
d739f1c4 | 1941 | total_sectors += bs_sectors[bs_i]; |
926c2d23 | 1942 | } |
ea2384d3 | 1943 | |
ef80654d WX |
1944 | if (sn_opts) { |
1945 | ret = bdrv_snapshot_load_tmp(bs[0], | |
1946 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_ID), | |
1947 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_NAME), | |
1948 | &local_err); | |
1949 | } else if (snapshot_name != NULL) { | |
51ef6727 | 1950 | if (bs_n > 1) { |
6daf194d | 1951 | error_report("No support for concatenating multiple snapshot"); |
51ef6727 | 1952 | ret = -1; |
1953 | goto out; | |
1954 | } | |
7b4c4781 WX |
1955 | |
1956 | bdrv_snapshot_load_tmp_by_id_or_name(bs[0], snapshot_name, &local_err); | |
ef80654d | 1957 | } |
84d18f06 | 1958 | if (local_err) { |
c29b77f9 | 1959 | error_reportf_err(local_err, "Failed to load snapshot: "); |
ef80654d WX |
1960 | ret = -1; |
1961 | goto out; | |
51ef6727 | 1962 | } |
1963 | ||
efa84d43 | 1964 | /* Find driver and parse its options */ |
ea2384d3 | 1965 | drv = bdrv_find_format(out_fmt); |
c2abccec | 1966 | if (!drv) { |
15654a6d | 1967 | error_report("Unknown file format '%s'", out_fmt); |
c2abccec MK |
1968 | ret = -1; |
1969 | goto out; | |
1970 | } | |
efa84d43 | 1971 | |
b65a5e12 | 1972 | proto_drv = bdrv_find_protocol(out_filename, true, &local_err); |
c2abccec | 1973 | if (!proto_drv) { |
2867ce4a | 1974 | error_report_err(local_err); |
c2abccec MK |
1975 | ret = -1; |
1976 | goto out; | |
1977 | } | |
b50cbabc | 1978 | |
2e024cde HR |
1979 | if (!skip_create) { |
1980 | if (!drv->create_opts) { | |
1981 | error_report("Format driver '%s' does not support image creation", | |
1982 | drv->format_name); | |
1983 | ret = -1; | |
1984 | goto out; | |
1985 | } | |
f75613cf | 1986 | |
2e024cde HR |
1987 | if (!proto_drv->create_opts) { |
1988 | error_report("Protocol driver '%s' does not support image creation", | |
1989 | proto_drv->format_name); | |
1990 | ret = -1; | |
1991 | goto out; | |
1992 | } | |
f75613cf | 1993 | |
2e024cde HR |
1994 | create_opts = qemu_opts_append(create_opts, drv->create_opts); |
1995 | create_opts = qemu_opts_append(create_opts, proto_drv->create_opts); | |
db08adf5 | 1996 | |
2e024cde | 1997 | opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); |
dc523cd3 MA |
1998 | if (options) { |
1999 | qemu_opts_do_parse(opts, options, NULL, &local_err); | |
2000 | if (local_err) { | |
97a2ca7a | 2001 | error_report_err(local_err); |
dc523cd3 MA |
2002 | ret = -1; |
2003 | goto out; | |
2004 | } | |
2e024cde | 2005 | } |
efa84d43 | 2006 | |
39101f25 MA |
2007 | qemu_opt_set_number(opts, BLOCK_OPT_SIZE, total_sectors * 512, |
2008 | &error_abort); | |
2e024cde HR |
2009 | ret = add_old_style_options(out_fmt, opts, out_baseimg, NULL); |
2010 | if (ret < 0) { | |
2011 | goto out; | |
2012 | } | |
c2abccec | 2013 | } |
efa84d43 | 2014 | |
a18953fb | 2015 | /* Get backing file name if -o backing_file was used */ |
83d0521a | 2016 | out_baseimg_param = qemu_opt_get(opts, BLOCK_OPT_BACKING_FILE); |
a18953fb | 2017 | if (out_baseimg_param) { |
83d0521a | 2018 | out_baseimg = out_baseimg_param; |
a18953fb KW |
2019 | } |
2020 | ||
efa84d43 | 2021 | /* Check if compression is supported */ |
eec77d9e | 2022 | if (compress) { |
83d0521a CL |
2023 | bool encryption = |
2024 | qemu_opt_get_bool(opts, BLOCK_OPT_ENCRYPT, false); | |
2025 | const char *preallocation = | |
2026 | qemu_opt_get(opts, BLOCK_OPT_PREALLOC); | |
efa84d43 KW |
2027 | |
2028 | if (!drv->bdrv_write_compressed) { | |
15654a6d | 2029 | error_report("Compression not supported for this file format"); |
c2abccec MK |
2030 | ret = -1; |
2031 | goto out; | |
efa84d43 KW |
2032 | } |
2033 | ||
83d0521a | 2034 | if (encryption) { |
15654a6d JS |
2035 | error_report("Compression and encryption not supported at " |
2036 | "the same time"); | |
c2abccec MK |
2037 | ret = -1; |
2038 | goto out; | |
efa84d43 | 2039 | } |
41521fa4 | 2040 | |
83d0521a CL |
2041 | if (preallocation |
2042 | && strcmp(preallocation, "off")) | |
41521fa4 KW |
2043 | { |
2044 | error_report("Compression and preallocation not supported at " | |
2045 | "the same time"); | |
2046 | ret = -1; | |
2047 | goto out; | |
2048 | } | |
efa84d43 KW |
2049 | } |
2050 | ||
b2e10493 AD |
2051 | if (!skip_create) { |
2052 | /* Create the new image */ | |
c282e1fd | 2053 | ret = bdrv_create(drv, out_filename, opts, &local_err); |
b2e10493 | 2054 | if (ret < 0) { |
c29b77f9 MA |
2055 | error_reportf_err(local_err, "%s: error while converting %s: ", |
2056 | out_filename, out_fmt); | |
b2e10493 | 2057 | goto out; |
ea2384d3 FB |
2058 | } |
2059 | } | |
3b46e624 | 2060 | |
5a37b60a | 2061 | flags = min_sparse ? (BDRV_O_RDWR | BDRV_O_UNMAP) : BDRV_O_RDWR; |
ce099547 | 2062 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); |
661a0f71 FS |
2063 | if (ret < 0) { |
2064 | error_report("Invalid cache option: %s", cache); | |
bb9cd2ee | 2065 | goto out; |
661a0f71 FS |
2066 | } |
2067 | ||
eb769f74 DB |
2068 | /* XXX we should allow --image-opts to trigger use of |
2069 | * img_open() here, but then we have trouble with | |
2070 | * the bdrv_create() call which takes different params. | |
2071 | * Not critical right now, so fix can wait... | |
2072 | */ | |
ce099547 | 2073 | out_blk = img_open_file(out_filename, out_fmt, flags, writethrough, quiet); |
7e7d56d9 | 2074 | if (!out_blk) { |
c2abccec MK |
2075 | ret = -1; |
2076 | goto out; | |
2077 | } | |
7e7d56d9 | 2078 | out_bs = blk_bs(out_blk); |
ea2384d3 | 2079 | |
f2521c90 PL |
2080 | /* increase bufsectors from the default 4096 (2M) if opt_transfer_length |
2081 | * or discard_alignment of the out_bs is greater. Limit to 32768 (16MB) | |
2082 | * as maximum. */ | |
2083 | bufsectors = MIN(32768, | |
2084 | MAX(bufsectors, MAX(out_bs->bl.opt_transfer_length, | |
2085 | out_bs->bl.discard_alignment)) | |
2086 | ); | |
2087 | ||
b2e10493 | 2088 | if (skip_create) { |
f1d3cd79 | 2089 | int64_t output_sectors = blk_nb_sectors(out_blk); |
43716fa8 | 2090 | if (output_sectors < 0) { |
eec5eb42 | 2091 | error_report("unable to get output image length: %s", |
43716fa8 | 2092 | strerror(-output_sectors)); |
b2e10493 AD |
2093 | ret = -1; |
2094 | goto out; | |
43716fa8 | 2095 | } else if (output_sectors < total_sectors) { |
b2e10493 AD |
2096 | error_report("output file is smaller than input file"); |
2097 | ret = -1; | |
2098 | goto out; | |
2099 | } | |
2100 | } | |
2101 | ||
24f833cd PL |
2102 | cluster_sectors = 0; |
2103 | ret = bdrv_get_info(out_bs, &bdi); | |
2104 | if (ret < 0) { | |
2105 | if (compress) { | |
15654a6d | 2106 | error_report("could not get block driver info"); |
c2abccec MK |
2107 | goto out; |
2108 | } | |
24f833cd | 2109 | } else { |
85f49cad | 2110 | compress = compress || bdi.needs_compressed_writes; |
24f833cd PL |
2111 | cluster_sectors = bdi.cluster_size / BDRV_SECTOR_SIZE; |
2112 | } | |
2113 | ||
690c7301 KW |
2114 | state = (ImgConvertState) { |
2115 | .src = blk, | |
2116 | .src_sectors = bs_sectors, | |
2117 | .src_num = bs_n, | |
2118 | .total_sectors = total_sectors, | |
2119 | .target = out_blk, | |
2120 | .compressed = compress, | |
2121 | .target_has_backing = (bool) out_baseimg, | |
2122 | .min_sparse = min_sparse, | |
2123 | .cluster_sectors = cluster_sectors, | |
2124 | .buf_sectors = bufsectors, | |
2125 | }; | |
2126 | ret = convert_do_copy(&state); | |
802c3d4c | 2127 | |
c2abccec | 2128 | out: |
13c28af8 PL |
2129 | if (!ret) { |
2130 | qemu_progress_print(100, 0); | |
2131 | } | |
6b837bc4 | 2132 | qemu_progress_end(); |
83d0521a CL |
2133 | qemu_opts_del(opts); |
2134 | qemu_opts_free(create_opts); | |
fbf28a43 | 2135 | qemu_opts_del(sn_opts); |
26f54e9a | 2136 | blk_unref(out_blk); |
9ba10c95 | 2137 | g_free(bs); |
26f54e9a MA |
2138 | if (blk) { |
2139 | for (bs_i = 0; bs_i < bs_n; bs_i++) { | |
2140 | blk_unref(blk[bs_i]); | |
2141 | } | |
2142 | g_free(blk); | |
2143 | } | |
d739f1c4 | 2144 | g_free(bs_sectors); |
64bb01aa KW |
2145 | fail_getopt: |
2146 | g_free(options); | |
2147 | ||
c2abccec MK |
2148 | if (ret) { |
2149 | return 1; | |
2150 | } | |
ea2384d3 FB |
2151 | return 0; |
2152 | } | |
2153 | ||
57d1a2b6 | 2154 | |
faea38e7 FB |
2155 | static void dump_snapshots(BlockDriverState *bs) |
2156 | { | |
2157 | QEMUSnapshotInfo *sn_tab, *sn; | |
2158 | int nb_sns, i; | |
faea38e7 FB |
2159 | |
2160 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
2161 | if (nb_sns <= 0) | |
2162 | return; | |
2163 | printf("Snapshot list:\n"); | |
5b917044 WX |
2164 | bdrv_snapshot_dump(fprintf, stdout, NULL); |
2165 | printf("\n"); | |
faea38e7 FB |
2166 | for(i = 0; i < nb_sns; i++) { |
2167 | sn = &sn_tab[i]; | |
5b917044 WX |
2168 | bdrv_snapshot_dump(fprintf, stdout, sn); |
2169 | printf("\n"); | |
faea38e7 | 2170 | } |
7267c094 | 2171 | g_free(sn_tab); |
faea38e7 FB |
2172 | } |
2173 | ||
9699bf0d SH |
2174 | static void dump_json_image_info_list(ImageInfoList *list) |
2175 | { | |
4399c438 | 2176 | Error *local_err = NULL; |
9699bf0d SH |
2177 | QString *str; |
2178 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
2179 | QObject *obj; | |
51e72bc1 EB |
2180 | visit_type_ImageInfoList(qmp_output_get_visitor(ov), NULL, &list, |
2181 | &local_err); | |
9699bf0d SH |
2182 | obj = qmp_output_get_qobject(ov); |
2183 | str = qobject_to_json_pretty(obj); | |
2184 | assert(str != NULL); | |
2185 | printf("%s\n", qstring_get_str(str)); | |
2186 | qobject_decref(obj); | |
2187 | qmp_output_visitor_cleanup(ov); | |
2188 | QDECREF(str); | |
2189 | } | |
2190 | ||
c054b3fd BC |
2191 | static void dump_json_image_info(ImageInfo *info) |
2192 | { | |
4399c438 | 2193 | Error *local_err = NULL; |
c054b3fd BC |
2194 | QString *str; |
2195 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
2196 | QObject *obj; | |
51e72bc1 | 2197 | visit_type_ImageInfo(qmp_output_get_visitor(ov), NULL, &info, &local_err); |
c054b3fd BC |
2198 | obj = qmp_output_get_qobject(ov); |
2199 | str = qobject_to_json_pretty(obj); | |
2200 | assert(str != NULL); | |
2201 | printf("%s\n", qstring_get_str(str)); | |
2202 | qobject_decref(obj); | |
2203 | qmp_output_visitor_cleanup(ov); | |
2204 | QDECREF(str); | |
2205 | } | |
2206 | ||
9699bf0d SH |
2207 | static void dump_human_image_info_list(ImageInfoList *list) |
2208 | { | |
2209 | ImageInfoList *elem; | |
2210 | bool delim = false; | |
2211 | ||
2212 | for (elem = list; elem; elem = elem->next) { | |
2213 | if (delim) { | |
2214 | printf("\n"); | |
2215 | } | |
2216 | delim = true; | |
2217 | ||
5b917044 | 2218 | bdrv_image_info_dump(fprintf, stdout, elem->value); |
9699bf0d SH |
2219 | } |
2220 | } | |
2221 | ||
2222 | static gboolean str_equal_func(gconstpointer a, gconstpointer b) | |
2223 | { | |
2224 | return strcmp(a, b) == 0; | |
2225 | } | |
2226 | ||
2227 | /** | |
2228 | * Open an image file chain and return an ImageInfoList | |
2229 | * | |
2230 | * @filename: topmost image filename | |
2231 | * @fmt: topmost image format (may be NULL to autodetect) | |
2232 | * @chain: true - enumerate entire backing file chain | |
2233 | * false - only topmost image file | |
2234 | * | |
2235 | * Returns a list of ImageInfo objects or NULL if there was an error opening an | |
2236 | * image file. If there was an error a message will have been printed to | |
2237 | * stderr. | |
2238 | */ | |
eb769f74 DB |
2239 | static ImageInfoList *collect_image_info_list(bool image_opts, |
2240 | const char *filename, | |
9699bf0d SH |
2241 | const char *fmt, |
2242 | bool chain) | |
2243 | { | |
2244 | ImageInfoList *head = NULL; | |
2245 | ImageInfoList **last = &head; | |
2246 | GHashTable *filenames; | |
43526ec8 | 2247 | Error *err = NULL; |
9699bf0d SH |
2248 | |
2249 | filenames = g_hash_table_new_full(g_str_hash, str_equal_func, NULL, NULL); | |
2250 | ||
2251 | while (filename) { | |
26f54e9a | 2252 | BlockBackend *blk; |
9699bf0d SH |
2253 | BlockDriverState *bs; |
2254 | ImageInfo *info; | |
2255 | ImageInfoList *elem; | |
2256 | ||
2257 | if (g_hash_table_lookup_extended(filenames, filename, NULL, NULL)) { | |
2258 | error_report("Backing file '%s' creates an infinite loop.", | |
2259 | filename); | |
2260 | goto err; | |
2261 | } | |
2262 | g_hash_table_insert(filenames, (gpointer)filename, NULL); | |
2263 | ||
efaa7c4e | 2264 | blk = img_open(image_opts, filename, fmt, |
ce099547 | 2265 | BDRV_O_NO_BACKING | BDRV_O_NO_IO, false, false); |
7e7d56d9 | 2266 | if (!blk) { |
9699bf0d SH |
2267 | goto err; |
2268 | } | |
7e7d56d9 | 2269 | bs = blk_bs(blk); |
9699bf0d | 2270 | |
43526ec8 | 2271 | bdrv_query_image_info(bs, &info, &err); |
84d18f06 | 2272 | if (err) { |
565f65d2 | 2273 | error_report_err(err); |
26f54e9a | 2274 | blk_unref(blk); |
43526ec8 | 2275 | goto err; |
fb0ed453 | 2276 | } |
9699bf0d SH |
2277 | |
2278 | elem = g_new0(ImageInfoList, 1); | |
2279 | elem->value = info; | |
2280 | *last = elem; | |
2281 | last = &elem->next; | |
2282 | ||
26f54e9a | 2283 | blk_unref(blk); |
9699bf0d SH |
2284 | |
2285 | filename = fmt = NULL; | |
2286 | if (chain) { | |
2287 | if (info->has_full_backing_filename) { | |
2288 | filename = info->full_backing_filename; | |
2289 | } else if (info->has_backing_filename) { | |
92d617ab JS |
2290 | error_report("Could not determine absolute backing filename," |
2291 | " but backing filename '%s' present", | |
2292 | info->backing_filename); | |
2293 | goto err; | |
9699bf0d SH |
2294 | } |
2295 | if (info->has_backing_filename_format) { | |
2296 | fmt = info->backing_filename_format; | |
2297 | } | |
2298 | } | |
2299 | } | |
2300 | g_hash_table_destroy(filenames); | |
2301 | return head; | |
2302 | ||
2303 | err: | |
2304 | qapi_free_ImageInfoList(head); | |
2305 | g_hash_table_destroy(filenames); | |
2306 | return NULL; | |
2307 | } | |
2308 | ||
c054b3fd BC |
2309 | static int img_info(int argc, char **argv) |
2310 | { | |
2311 | int c; | |
2312 | OutputFormat output_format = OFORMAT_HUMAN; | |
9699bf0d | 2313 | bool chain = false; |
c054b3fd | 2314 | const char *filename, *fmt, *output; |
9699bf0d | 2315 | ImageInfoList *list; |
eb769f74 | 2316 | bool image_opts = false; |
c054b3fd | 2317 | |
ea2384d3 | 2318 | fmt = NULL; |
c054b3fd | 2319 | output = NULL; |
ea2384d3 | 2320 | for(;;) { |
c054b3fd BC |
2321 | int option_index = 0; |
2322 | static const struct option long_options[] = { | |
2323 | {"help", no_argument, 0, 'h'}, | |
2324 | {"format", required_argument, 0, 'f'}, | |
2325 | {"output", required_argument, 0, OPTION_OUTPUT}, | |
9699bf0d | 2326 | {"backing-chain", no_argument, 0, OPTION_BACKING_CHAIN}, |
3babeb15 | 2327 | {"object", required_argument, 0, OPTION_OBJECT}, |
eb769f74 | 2328 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
c054b3fd BC |
2329 | {0, 0, 0, 0} |
2330 | }; | |
2331 | c = getopt_long(argc, argv, "f:h", | |
2332 | long_options, &option_index); | |
b8fb60da | 2333 | if (c == -1) { |
ea2384d3 | 2334 | break; |
b8fb60da | 2335 | } |
ea2384d3 | 2336 | switch(c) { |
ef87394c | 2337 | case '?': |
ea2384d3 FB |
2338 | case 'h': |
2339 | help(); | |
2340 | break; | |
2341 | case 'f': | |
2342 | fmt = optarg; | |
2343 | break; | |
c054b3fd BC |
2344 | case OPTION_OUTPUT: |
2345 | output = optarg; | |
2346 | break; | |
9699bf0d SH |
2347 | case OPTION_BACKING_CHAIN: |
2348 | chain = true; | |
2349 | break; | |
3babeb15 DB |
2350 | case OPTION_OBJECT: { |
2351 | QemuOpts *opts; | |
2352 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
2353 | optarg, true); | |
2354 | if (!opts) { | |
2355 | return 1; | |
2356 | } | |
2357 | } break; | |
eb769f74 DB |
2358 | case OPTION_IMAGE_OPTS: |
2359 | image_opts = true; | |
2360 | break; | |
ea2384d3 FB |
2361 | } |
2362 | } | |
fc11eb26 | 2363 | if (optind != argc - 1) { |
ac1307ab | 2364 | error_exit("Expecting one image file name"); |
b8fb60da | 2365 | } |
ea2384d3 FB |
2366 | filename = argv[optind++]; |
2367 | ||
c054b3fd BC |
2368 | if (output && !strcmp(output, "json")) { |
2369 | output_format = OFORMAT_JSON; | |
2370 | } else if (output && !strcmp(output, "human")) { | |
2371 | output_format = OFORMAT_HUMAN; | |
2372 | } else if (output) { | |
2373 | error_report("--output must be used with human or json as argument."); | |
c2abccec MK |
2374 | return 1; |
2375 | } | |
c054b3fd | 2376 | |
3babeb15 DB |
2377 | if (qemu_opts_foreach(&qemu_object_opts, |
2378 | user_creatable_add_opts_foreach, | |
51b9b478 | 2379 | NULL, NULL)) { |
3babeb15 DB |
2380 | return 1; |
2381 | } | |
2382 | ||
eb769f74 | 2383 | list = collect_image_info_list(image_opts, filename, fmt, chain); |
9699bf0d | 2384 | if (!list) { |
c2abccec | 2385 | return 1; |
faea38e7 | 2386 | } |
c054b3fd | 2387 | |
c054b3fd BC |
2388 | switch (output_format) { |
2389 | case OFORMAT_HUMAN: | |
9699bf0d | 2390 | dump_human_image_info_list(list); |
c054b3fd BC |
2391 | break; |
2392 | case OFORMAT_JSON: | |
9699bf0d SH |
2393 | if (chain) { |
2394 | dump_json_image_info_list(list); | |
2395 | } else { | |
2396 | dump_json_image_info(list->value); | |
2397 | } | |
c054b3fd | 2398 | break; |
faea38e7 | 2399 | } |
c054b3fd | 2400 | |
9699bf0d | 2401 | qapi_free_ImageInfoList(list); |
ea2384d3 FB |
2402 | return 0; |
2403 | } | |
2404 | ||
4c93a13b PB |
2405 | static void dump_map_entry(OutputFormat output_format, MapEntry *e, |
2406 | MapEntry *next) | |
2407 | { | |
2408 | switch (output_format) { | |
2409 | case OFORMAT_HUMAN: | |
16b0d555 | 2410 | if (e->data && !e->has_offset) { |
4c93a13b PB |
2411 | error_report("File contains external, encrypted or compressed clusters."); |
2412 | exit(1); | |
2413 | } | |
16b0d555 | 2414 | if (e->data && !e->zero) { |
4c93a13b | 2415 | printf("%#-16"PRIx64"%#-16"PRIx64"%#-16"PRIx64"%s\n", |
16b0d555 FZ |
2416 | e->start, e->length, |
2417 | e->has_offset ? e->offset : 0, | |
2418 | e->has_filename ? e->filename : ""); | |
4c93a13b PB |
2419 | } |
2420 | /* This format ignores the distinction between 0, ZERO and ZERO|DATA. | |
2421 | * Modify the flags here to allow more coalescing. | |
2422 | */ | |
16b0d555 FZ |
2423 | if (next && (!next->data || next->zero)) { |
2424 | next->data = false; | |
2425 | next->zero = true; | |
4c93a13b PB |
2426 | } |
2427 | break; | |
2428 | case OFORMAT_JSON: | |
16b0d555 FZ |
2429 | printf("%s{ \"start\": %"PRId64", \"length\": %"PRId64"," |
2430 | " \"depth\": %"PRId64", \"zero\": %s, \"data\": %s", | |
4c93a13b PB |
2431 | (e->start == 0 ? "[" : ",\n"), |
2432 | e->start, e->length, e->depth, | |
16b0d555 FZ |
2433 | e->zero ? "true" : "false", |
2434 | e->data ? "true" : "false"); | |
2435 | if (e->has_offset) { | |
c745bfb4 | 2436 | printf(", \"offset\": %"PRId64"", e->offset); |
4c93a13b PB |
2437 | } |
2438 | putchar('}'); | |
2439 | ||
2440 | if (!next) { | |
2441 | printf("]\n"); | |
2442 | } | |
2443 | break; | |
2444 | } | |
2445 | } | |
2446 | ||
2447 | static int get_block_status(BlockDriverState *bs, int64_t sector_num, | |
2448 | int nb_sectors, MapEntry *e) | |
2449 | { | |
2450 | int64_t ret; | |
2451 | int depth; | |
67a0fd2a | 2452 | BlockDriverState *file; |
2875645b | 2453 | bool has_offset; |
4c93a13b PB |
2454 | |
2455 | /* As an optimization, we could cache the current range of unallocated | |
2456 | * clusters in each file of the chain, and avoid querying the same | |
2457 | * range repeatedly. | |
2458 | */ | |
2459 | ||
2460 | depth = 0; | |
2461 | for (;;) { | |
67a0fd2a FZ |
2462 | ret = bdrv_get_block_status(bs, sector_num, nb_sectors, &nb_sectors, |
2463 | &file); | |
4c93a13b PB |
2464 | if (ret < 0) { |
2465 | return ret; | |
2466 | } | |
2467 | assert(nb_sectors); | |
2468 | if (ret & (BDRV_BLOCK_ZERO|BDRV_BLOCK_DATA)) { | |
2469 | break; | |
2470 | } | |
760e0063 | 2471 | bs = backing_bs(bs); |
4c93a13b PB |
2472 | if (bs == NULL) { |
2473 | ret = 0; | |
2474 | break; | |
2475 | } | |
2476 | ||
2477 | depth++; | |
2478 | } | |
2479 | ||
2875645b JS |
2480 | has_offset = !!(ret & BDRV_BLOCK_OFFSET_VALID); |
2481 | ||
2482 | *e = (MapEntry) { | |
2483 | .start = sector_num * BDRV_SECTOR_SIZE, | |
2484 | .length = nb_sectors * BDRV_SECTOR_SIZE, | |
2485 | .data = !!(ret & BDRV_BLOCK_DATA), | |
2486 | .zero = !!(ret & BDRV_BLOCK_ZERO), | |
2487 | .offset = ret & BDRV_BLOCK_OFFSET_MASK, | |
2488 | .has_offset = has_offset, | |
2489 | .depth = depth, | |
2490 | .has_filename = file && has_offset, | |
2491 | .filename = file && has_offset ? file->filename : NULL, | |
2492 | }; | |
2493 | ||
4c93a13b PB |
2494 | return 0; |
2495 | } | |
2496 | ||
16b0d555 FZ |
2497 | static inline bool entry_mergeable(const MapEntry *curr, const MapEntry *next) |
2498 | { | |
2499 | if (curr->length == 0) { | |
2500 | return false; | |
2501 | } | |
2502 | if (curr->zero != next->zero || | |
2503 | curr->data != next->data || | |
2504 | curr->depth != next->depth || | |
2505 | curr->has_filename != next->has_filename || | |
2506 | curr->has_offset != next->has_offset) { | |
2507 | return false; | |
2508 | } | |
2509 | if (curr->has_filename && strcmp(curr->filename, next->filename)) { | |
2510 | return false; | |
2511 | } | |
2512 | if (curr->has_offset && curr->offset + curr->length != next->offset) { | |
2513 | return false; | |
2514 | } | |
2515 | return true; | |
2516 | } | |
2517 | ||
4c93a13b PB |
2518 | static int img_map(int argc, char **argv) |
2519 | { | |
2520 | int c; | |
2521 | OutputFormat output_format = OFORMAT_HUMAN; | |
26f54e9a | 2522 | BlockBackend *blk; |
4c93a13b PB |
2523 | BlockDriverState *bs; |
2524 | const char *filename, *fmt, *output; | |
2525 | int64_t length; | |
2526 | MapEntry curr = { .length = 0 }, next; | |
2527 | int ret = 0; | |
eb769f74 | 2528 | bool image_opts = false; |
4c93a13b PB |
2529 | |
2530 | fmt = NULL; | |
2531 | output = NULL; | |
2532 | for (;;) { | |
2533 | int option_index = 0; | |
2534 | static const struct option long_options[] = { | |
2535 | {"help", no_argument, 0, 'h'}, | |
2536 | {"format", required_argument, 0, 'f'}, | |
2537 | {"output", required_argument, 0, OPTION_OUTPUT}, | |
3babeb15 | 2538 | {"object", required_argument, 0, OPTION_OBJECT}, |
eb769f74 | 2539 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
4c93a13b PB |
2540 | {0, 0, 0, 0} |
2541 | }; | |
2542 | c = getopt_long(argc, argv, "f:h", | |
2543 | long_options, &option_index); | |
2544 | if (c == -1) { | |
2545 | break; | |
2546 | } | |
2547 | switch (c) { | |
2548 | case '?': | |
2549 | case 'h': | |
2550 | help(); | |
2551 | break; | |
2552 | case 'f': | |
2553 | fmt = optarg; | |
2554 | break; | |
2555 | case OPTION_OUTPUT: | |
2556 | output = optarg; | |
2557 | break; | |
3babeb15 DB |
2558 | case OPTION_OBJECT: { |
2559 | QemuOpts *opts; | |
2560 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
2561 | optarg, true); | |
2562 | if (!opts) { | |
2563 | return 1; | |
2564 | } | |
2565 | } break; | |
eb769f74 DB |
2566 | case OPTION_IMAGE_OPTS: |
2567 | image_opts = true; | |
2568 | break; | |
4c93a13b PB |
2569 | } |
2570 | } | |
ac1307ab FZ |
2571 | if (optind != argc - 1) { |
2572 | error_exit("Expecting one image file name"); | |
4c93a13b | 2573 | } |
ac1307ab | 2574 | filename = argv[optind]; |
4c93a13b PB |
2575 | |
2576 | if (output && !strcmp(output, "json")) { | |
2577 | output_format = OFORMAT_JSON; | |
2578 | } else if (output && !strcmp(output, "human")) { | |
2579 | output_format = OFORMAT_HUMAN; | |
2580 | } else if (output) { | |
2581 | error_report("--output must be used with human or json as argument."); | |
2582 | return 1; | |
2583 | } | |
2584 | ||
3babeb15 DB |
2585 | if (qemu_opts_foreach(&qemu_object_opts, |
2586 | user_creatable_add_opts_foreach, | |
51b9b478 | 2587 | NULL, NULL)) { |
3babeb15 DB |
2588 | return 1; |
2589 | } | |
2590 | ||
ce099547 | 2591 | blk = img_open(image_opts, filename, fmt, 0, false, false); |
7e7d56d9 MA |
2592 | if (!blk) { |
2593 | return 1; | |
4c93a13b | 2594 | } |
7e7d56d9 | 2595 | bs = blk_bs(blk); |
4c93a13b PB |
2596 | |
2597 | if (output_format == OFORMAT_HUMAN) { | |
2598 | printf("%-16s%-16s%-16s%s\n", "Offset", "Length", "Mapped to", "File"); | |
2599 | } | |
2600 | ||
f1d3cd79 | 2601 | length = blk_getlength(blk); |
4c93a13b PB |
2602 | while (curr.start + curr.length < length) { |
2603 | int64_t nsectors_left; | |
2604 | int64_t sector_num; | |
2605 | int n; | |
2606 | ||
2607 | sector_num = (curr.start + curr.length) >> BDRV_SECTOR_BITS; | |
2608 | ||
2609 | /* Probe up to 1 GiB at a time. */ | |
2610 | nsectors_left = DIV_ROUND_UP(length, BDRV_SECTOR_SIZE) - sector_num; | |
2611 | n = MIN(1 << (30 - BDRV_SECTOR_BITS), nsectors_left); | |
2612 | ret = get_block_status(bs, sector_num, n, &next); | |
2613 | ||
2614 | if (ret < 0) { | |
2615 | error_report("Could not read file metadata: %s", strerror(-ret)); | |
2616 | goto out; | |
2617 | } | |
2618 | ||
16b0d555 | 2619 | if (entry_mergeable(&curr, &next)) { |
4c93a13b PB |
2620 | curr.length += next.length; |
2621 | continue; | |
2622 | } | |
2623 | ||
2624 | if (curr.length > 0) { | |
2625 | dump_map_entry(output_format, &curr, &next); | |
2626 | } | |
2627 | curr = next; | |
2628 | } | |
2629 | ||
2630 | dump_map_entry(output_format, &curr, NULL); | |
2631 | ||
2632 | out: | |
26f54e9a | 2633 | blk_unref(blk); |
4c93a13b PB |
2634 | return ret < 0; |
2635 | } | |
2636 | ||
f7b4a940 AL |
2637 | #define SNAPSHOT_LIST 1 |
2638 | #define SNAPSHOT_CREATE 2 | |
2639 | #define SNAPSHOT_APPLY 3 | |
2640 | #define SNAPSHOT_DELETE 4 | |
2641 | ||
153859be | 2642 | static int img_snapshot(int argc, char **argv) |
f7b4a940 | 2643 | { |
26f54e9a | 2644 | BlockBackend *blk; |
f7b4a940 AL |
2645 | BlockDriverState *bs; |
2646 | QEMUSnapshotInfo sn; | |
2647 | char *filename, *snapshot_name = NULL; | |
c2abccec | 2648 | int c, ret = 0, bdrv_oflags; |
f7b4a940 AL |
2649 | int action = 0; |
2650 | qemu_timeval tv; | |
f382d43a | 2651 | bool quiet = false; |
a89d89d3 | 2652 | Error *err = NULL; |
eb769f74 | 2653 | bool image_opts = false; |
f7b4a940 | 2654 | |
ce099547 | 2655 | bdrv_oflags = BDRV_O_RDWR; |
f7b4a940 AL |
2656 | /* Parse commandline parameters */ |
2657 | for(;;) { | |
3babeb15 DB |
2658 | static const struct option long_options[] = { |
2659 | {"help", no_argument, 0, 'h'}, | |
2660 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 2661 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
2662 | {0, 0, 0, 0} |
2663 | }; | |
2664 | c = getopt_long(argc, argv, "la:c:d:hq", | |
2665 | long_options, NULL); | |
b8fb60da | 2666 | if (c == -1) { |
f7b4a940 | 2667 | break; |
b8fb60da | 2668 | } |
f7b4a940 | 2669 | switch(c) { |
ef87394c | 2670 | case '?': |
f7b4a940 AL |
2671 | case 'h': |
2672 | help(); | |
153859be | 2673 | return 0; |
f7b4a940 AL |
2674 | case 'l': |
2675 | if (action) { | |
ac1307ab | 2676 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2677 | return 0; |
f7b4a940 AL |
2678 | } |
2679 | action = SNAPSHOT_LIST; | |
f5edb014 | 2680 | bdrv_oflags &= ~BDRV_O_RDWR; /* no need for RW */ |
f7b4a940 AL |
2681 | break; |
2682 | case 'a': | |
2683 | if (action) { | |
ac1307ab | 2684 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2685 | return 0; |
f7b4a940 AL |
2686 | } |
2687 | action = SNAPSHOT_APPLY; | |
2688 | snapshot_name = optarg; | |
2689 | break; | |
2690 | case 'c': | |
2691 | if (action) { | |
ac1307ab | 2692 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2693 | return 0; |
f7b4a940 AL |
2694 | } |
2695 | action = SNAPSHOT_CREATE; | |
2696 | snapshot_name = optarg; | |
2697 | break; | |
2698 | case 'd': | |
2699 | if (action) { | |
ac1307ab | 2700 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2701 | return 0; |
f7b4a940 AL |
2702 | } |
2703 | action = SNAPSHOT_DELETE; | |
2704 | snapshot_name = optarg; | |
2705 | break; | |
f382d43a MR |
2706 | case 'q': |
2707 | quiet = true; | |
2708 | break; | |
3babeb15 DB |
2709 | case OPTION_OBJECT: { |
2710 | QemuOpts *opts; | |
2711 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
2712 | optarg, true); | |
2713 | if (!opts) { | |
2714 | return 1; | |
2715 | } | |
2716 | } break; | |
eb769f74 DB |
2717 | case OPTION_IMAGE_OPTS: |
2718 | image_opts = true; | |
2719 | break; | |
f7b4a940 AL |
2720 | } |
2721 | } | |
2722 | ||
fc11eb26 | 2723 | if (optind != argc - 1) { |
ac1307ab | 2724 | error_exit("Expecting one image file name"); |
b8fb60da | 2725 | } |
f7b4a940 AL |
2726 | filename = argv[optind++]; |
2727 | ||
3babeb15 DB |
2728 | if (qemu_opts_foreach(&qemu_object_opts, |
2729 | user_creatable_add_opts_foreach, | |
51b9b478 | 2730 | NULL, NULL)) { |
3babeb15 DB |
2731 | return 1; |
2732 | } | |
2733 | ||
f7b4a940 | 2734 | /* Open the image */ |
ce099547 | 2735 | blk = img_open(image_opts, filename, NULL, bdrv_oflags, false, quiet); |
7e7d56d9 MA |
2736 | if (!blk) { |
2737 | return 1; | |
c2abccec | 2738 | } |
7e7d56d9 | 2739 | bs = blk_bs(blk); |
f7b4a940 AL |
2740 | |
2741 | /* Perform the requested action */ | |
2742 | switch(action) { | |
2743 | case SNAPSHOT_LIST: | |
2744 | dump_snapshots(bs); | |
2745 | break; | |
2746 | ||
2747 | case SNAPSHOT_CREATE: | |
2748 | memset(&sn, 0, sizeof(sn)); | |
2749 | pstrcpy(sn.name, sizeof(sn.name), snapshot_name); | |
2750 | ||
2751 | qemu_gettimeofday(&tv); | |
2752 | sn.date_sec = tv.tv_sec; | |
2753 | sn.date_nsec = tv.tv_usec * 1000; | |
2754 | ||
2755 | ret = bdrv_snapshot_create(bs, &sn); | |
b8fb60da | 2756 | if (ret) { |
15654a6d | 2757 | error_report("Could not create snapshot '%s': %d (%s)", |
f7b4a940 | 2758 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 2759 | } |
f7b4a940 AL |
2760 | break; |
2761 | ||
2762 | case SNAPSHOT_APPLY: | |
2763 | ret = bdrv_snapshot_goto(bs, snapshot_name); | |
b8fb60da | 2764 | if (ret) { |
15654a6d | 2765 | error_report("Could not apply snapshot '%s': %d (%s)", |
f7b4a940 | 2766 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 2767 | } |
f7b4a940 AL |
2768 | break; |
2769 | ||
2770 | case SNAPSHOT_DELETE: | |
a89d89d3 | 2771 | bdrv_snapshot_delete_by_id_or_name(bs, snapshot_name, &err); |
84d18f06 | 2772 | if (err) { |
c29b77f9 MA |
2773 | error_reportf_err(err, "Could not delete snapshot '%s': ", |
2774 | snapshot_name); | |
a89d89d3 | 2775 | ret = 1; |
b8fb60da | 2776 | } |
f7b4a940 AL |
2777 | break; |
2778 | } | |
2779 | ||
2780 | /* Cleanup */ | |
26f54e9a | 2781 | blk_unref(blk); |
c2abccec MK |
2782 | if (ret) { |
2783 | return 1; | |
2784 | } | |
153859be | 2785 | return 0; |
f7b4a940 AL |
2786 | } |
2787 | ||
3e85c6fd KW |
2788 | static int img_rebase(int argc, char **argv) |
2789 | { | |
26f54e9a | 2790 | BlockBackend *blk = NULL, *blk_old_backing = NULL, *blk_new_backing = NULL; |
396374ca PB |
2791 | uint8_t *buf_old = NULL; |
2792 | uint8_t *buf_new = NULL; | |
f1d3cd79 | 2793 | BlockDriverState *bs = NULL; |
3e85c6fd | 2794 | char *filename; |
40055951 HR |
2795 | const char *fmt, *cache, *src_cache, *out_basefmt, *out_baseimg; |
2796 | int c, flags, src_flags, ret; | |
ce099547 | 2797 | bool writethrough, src_writethrough; |
3e85c6fd | 2798 | int unsafe = 0; |
6b837bc4 | 2799 | int progress = 0; |
f382d43a | 2800 | bool quiet = false; |
34b5d2c6 | 2801 | Error *local_err = NULL; |
eb769f74 | 2802 | bool image_opts = false; |
3e85c6fd KW |
2803 | |
2804 | /* Parse commandline parameters */ | |
e53dbee0 | 2805 | fmt = NULL; |
661a0f71 | 2806 | cache = BDRV_DEFAULT_CACHE; |
40055951 | 2807 | src_cache = BDRV_DEFAULT_CACHE; |
3e85c6fd KW |
2808 | out_baseimg = NULL; |
2809 | out_basefmt = NULL; | |
3e85c6fd | 2810 | for(;;) { |
3babeb15 DB |
2811 | static const struct option long_options[] = { |
2812 | {"help", no_argument, 0, 'h'}, | |
2813 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 2814 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
2815 | {0, 0, 0, 0} |
2816 | }; | |
2817 | c = getopt_long(argc, argv, "hf:F:b:upt:T:q", | |
2818 | long_options, NULL); | |
b8fb60da | 2819 | if (c == -1) { |
3e85c6fd | 2820 | break; |
b8fb60da | 2821 | } |
3e85c6fd | 2822 | switch(c) { |
ef87394c | 2823 | case '?': |
3e85c6fd KW |
2824 | case 'h': |
2825 | help(); | |
2826 | return 0; | |
e53dbee0 KW |
2827 | case 'f': |
2828 | fmt = optarg; | |
2829 | break; | |
3e85c6fd KW |
2830 | case 'F': |
2831 | out_basefmt = optarg; | |
2832 | break; | |
2833 | case 'b': | |
2834 | out_baseimg = optarg; | |
2835 | break; | |
2836 | case 'u': | |
2837 | unsafe = 1; | |
2838 | break; | |
6b837bc4 JS |
2839 | case 'p': |
2840 | progress = 1; | |
2841 | break; | |
661a0f71 FS |
2842 | case 't': |
2843 | cache = optarg; | |
2844 | break; | |
40055951 HR |
2845 | case 'T': |
2846 | src_cache = optarg; | |
2847 | break; | |
f382d43a MR |
2848 | case 'q': |
2849 | quiet = true; | |
2850 | break; | |
3babeb15 DB |
2851 | case OPTION_OBJECT: { |
2852 | QemuOpts *opts; | |
2853 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
2854 | optarg, true); | |
2855 | if (!opts) { | |
2856 | return 1; | |
2857 | } | |
2858 | } break; | |
eb769f74 DB |
2859 | case OPTION_IMAGE_OPTS: |
2860 | image_opts = true; | |
2861 | break; | |
3e85c6fd KW |
2862 | } |
2863 | } | |
2864 | ||
f382d43a MR |
2865 | if (quiet) { |
2866 | progress = 0; | |
2867 | } | |
2868 | ||
ac1307ab FZ |
2869 | if (optind != argc - 1) { |
2870 | error_exit("Expecting one image file name"); | |
2871 | } | |
2872 | if (!unsafe && !out_baseimg) { | |
2873 | error_exit("Must specify backing file (-b) or use unsafe mode (-u)"); | |
b8fb60da | 2874 | } |
3e85c6fd KW |
2875 | filename = argv[optind++]; |
2876 | ||
3babeb15 DB |
2877 | if (qemu_opts_foreach(&qemu_object_opts, |
2878 | user_creatable_add_opts_foreach, | |
51b9b478 | 2879 | NULL, NULL)) { |
3babeb15 DB |
2880 | return 1; |
2881 | } | |
2882 | ||
6b837bc4 JS |
2883 | qemu_progress_init(progress, 2.0); |
2884 | qemu_progress_print(0, 100); | |
2885 | ||
661a0f71 | 2886 | flags = BDRV_O_RDWR | (unsafe ? BDRV_O_NO_BACKING : 0); |
ce099547 | 2887 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); |
661a0f71 FS |
2888 | if (ret < 0) { |
2889 | error_report("Invalid cache option: %s", cache); | |
40ed35a3 | 2890 | goto out; |
661a0f71 FS |
2891 | } |
2892 | ||
ce099547 KW |
2893 | src_flags = 0; |
2894 | ret = bdrv_parse_cache_mode(src_cache, &src_flags, &src_writethrough); | |
40055951 HR |
2895 | if (ret < 0) { |
2896 | error_report("Invalid source cache option: %s", src_cache); | |
40ed35a3 | 2897 | goto out; |
40055951 HR |
2898 | } |
2899 | ||
ce099547 KW |
2900 | /* The source files are opened read-only, don't care about WCE */ |
2901 | assert((src_flags & BDRV_O_RDWR) == 0); | |
2902 | (void) src_writethrough; | |
2903 | ||
3e85c6fd KW |
2904 | /* |
2905 | * Open the images. | |
2906 | * | |
2907 | * Ignore the old backing file for unsafe rebase in case we want to correct | |
2908 | * the reference to a renamed or moved backing file. | |
2909 | */ | |
ce099547 | 2910 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet); |
7e7d56d9 | 2911 | if (!blk) { |
40ed35a3 SH |
2912 | ret = -1; |
2913 | goto out; | |
c2abccec | 2914 | } |
7e7d56d9 | 2915 | bs = blk_bs(blk); |
3e85c6fd | 2916 | |
3e85c6fd | 2917 | if (out_basefmt != NULL) { |
644483d9 | 2918 | if (bdrv_find_format(out_basefmt) == NULL) { |
15654a6d | 2919 | error_report("Invalid format name: '%s'", out_basefmt); |
c2abccec MK |
2920 | ret = -1; |
2921 | goto out; | |
3e85c6fd KW |
2922 | } |
2923 | } | |
2924 | ||
2925 | /* For safe rebasing we need to compare old and new backing file */ | |
40ed35a3 | 2926 | if (!unsafe) { |
9a29e18f | 2927 | char backing_name[PATH_MAX]; |
644483d9 HR |
2928 | QDict *options = NULL; |
2929 | ||
2930 | if (bs->backing_format[0] != '\0') { | |
2931 | options = qdict_new(); | |
2932 | qdict_put(options, "driver", qstring_from_str(bs->backing_format)); | |
2933 | } | |
3e85c6fd | 2934 | |
3e85c6fd | 2935 | bdrv_get_backing_filename(bs, backing_name, sizeof(backing_name)); |
efaa7c4e | 2936 | blk_old_backing = blk_new_open(backing_name, NULL, |
644483d9 HR |
2937 | options, src_flags, &local_err); |
2938 | if (!blk_old_backing) { | |
c29b77f9 MA |
2939 | error_reportf_err(local_err, |
2940 | "Could not open old backing file '%s': ", | |
2941 | backing_name); | |
c2abccec | 2942 | goto out; |
3e85c6fd | 2943 | } |
644483d9 | 2944 | |
a616673d | 2945 | if (out_baseimg[0]) { |
644483d9 HR |
2946 | if (out_basefmt) { |
2947 | options = qdict_new(); | |
2948 | qdict_put(options, "driver", qstring_from_str(out_basefmt)); | |
2949 | } else { | |
2950 | options = NULL; | |
2951 | } | |
2952 | ||
efaa7c4e | 2953 | blk_new_backing = blk_new_open(out_baseimg, NULL, |
644483d9 HR |
2954 | options, src_flags, &local_err); |
2955 | if (!blk_new_backing) { | |
c29b77f9 MA |
2956 | error_reportf_err(local_err, |
2957 | "Could not open new backing file '%s': ", | |
2958 | out_baseimg); | |
a616673d AB |
2959 | goto out; |
2960 | } | |
3e85c6fd KW |
2961 | } |
2962 | } | |
2963 | ||
2964 | /* | |
2965 | * Check each unallocated cluster in the COW file. If it is unallocated, | |
2966 | * accesses go to the backing file. We must therefore compare this cluster | |
2967 | * in the old and new backing file, and if they differ we need to copy it | |
2968 | * from the old backing file into the COW file. | |
2969 | * | |
2970 | * If qemu-img crashes during this step, no harm is done. The content of | |
2971 | * the image is the same as the original one at any time. | |
2972 | */ | |
2973 | if (!unsafe) { | |
52bf1e72 MA |
2974 | int64_t num_sectors; |
2975 | int64_t old_backing_num_sectors; | |
2976 | int64_t new_backing_num_sectors = 0; | |
3e85c6fd | 2977 | uint64_t sector; |
cc60e327 | 2978 | int n; |
1f710495 | 2979 | float local_progress = 0; |
d6771bfa | 2980 | |
f1d3cd79 HR |
2981 | buf_old = blk_blockalign(blk, IO_BUF_SIZE); |
2982 | buf_new = blk_blockalign(blk, IO_BUF_SIZE); | |
3e85c6fd | 2983 | |
f1d3cd79 | 2984 | num_sectors = blk_nb_sectors(blk); |
52bf1e72 MA |
2985 | if (num_sectors < 0) { |
2986 | error_report("Could not get size of '%s': %s", | |
2987 | filename, strerror(-num_sectors)); | |
2988 | ret = -1; | |
2989 | goto out; | |
2990 | } | |
f1d3cd79 | 2991 | old_backing_num_sectors = blk_nb_sectors(blk_old_backing); |
52bf1e72 | 2992 | if (old_backing_num_sectors < 0) { |
9a29e18f | 2993 | char backing_name[PATH_MAX]; |
52bf1e72 MA |
2994 | |
2995 | bdrv_get_backing_filename(bs, backing_name, sizeof(backing_name)); | |
2996 | error_report("Could not get size of '%s': %s", | |
2997 | backing_name, strerror(-old_backing_num_sectors)); | |
2998 | ret = -1; | |
2999 | goto out; | |
3000 | } | |
f1d3cd79 HR |
3001 | if (blk_new_backing) { |
3002 | new_backing_num_sectors = blk_nb_sectors(blk_new_backing); | |
52bf1e72 MA |
3003 | if (new_backing_num_sectors < 0) { |
3004 | error_report("Could not get size of '%s': %s", | |
3005 | out_baseimg, strerror(-new_backing_num_sectors)); | |
3006 | ret = -1; | |
3007 | goto out; | |
3008 | } | |
a616673d | 3009 | } |
3e85c6fd | 3010 | |
1f710495 KW |
3011 | if (num_sectors != 0) { |
3012 | local_progress = (float)100 / | |
3013 | (num_sectors / MIN(num_sectors, IO_BUF_SIZE / 512)); | |
3014 | } | |
3015 | ||
3e85c6fd KW |
3016 | for (sector = 0; sector < num_sectors; sector += n) { |
3017 | ||
3018 | /* How many sectors can we handle with the next read? */ | |
3019 | if (sector + (IO_BUF_SIZE / 512) <= num_sectors) { | |
3020 | n = (IO_BUF_SIZE / 512); | |
3021 | } else { | |
3022 | n = num_sectors - sector; | |
3023 | } | |
3024 | ||
3025 | /* If the cluster is allocated, we don't need to take action */ | |
cc60e327 | 3026 | ret = bdrv_is_allocated(bs, sector, n, &n); |
d663640c PB |
3027 | if (ret < 0) { |
3028 | error_report("error while reading image metadata: %s", | |
3029 | strerror(-ret)); | |
3030 | goto out; | |
3031 | } | |
cc60e327 | 3032 | if (ret) { |
3e85c6fd KW |
3033 | continue; |
3034 | } | |
3035 | ||
87a1b3e3 KW |
3036 | /* |
3037 | * Read old and new backing file and take into consideration that | |
3038 | * backing files may be smaller than the COW image. | |
3039 | */ | |
3040 | if (sector >= old_backing_num_sectors) { | |
3041 | memset(buf_old, 0, n * BDRV_SECTOR_SIZE); | |
3042 | } else { | |
3043 | if (sector + n > old_backing_num_sectors) { | |
3044 | n = old_backing_num_sectors - sector; | |
3045 | } | |
3046 | ||
9166920a EB |
3047 | ret = blk_pread(blk_old_backing, sector << BDRV_SECTOR_BITS, |
3048 | buf_old, n << BDRV_SECTOR_BITS); | |
87a1b3e3 KW |
3049 | if (ret < 0) { |
3050 | error_report("error while reading from old backing file"); | |
3051 | goto out; | |
3052 | } | |
3e85c6fd | 3053 | } |
87a1b3e3 | 3054 | |
f1d3cd79 | 3055 | if (sector >= new_backing_num_sectors || !blk_new_backing) { |
87a1b3e3 KW |
3056 | memset(buf_new, 0, n * BDRV_SECTOR_SIZE); |
3057 | } else { | |
3058 | if (sector + n > new_backing_num_sectors) { | |
3059 | n = new_backing_num_sectors - sector; | |
3060 | } | |
3061 | ||
9166920a EB |
3062 | ret = blk_pread(blk_new_backing, sector << BDRV_SECTOR_BITS, |
3063 | buf_new, n << BDRV_SECTOR_BITS); | |
87a1b3e3 KW |
3064 | if (ret < 0) { |
3065 | error_report("error while reading from new backing file"); | |
3066 | goto out; | |
3067 | } | |
3e85c6fd KW |
3068 | } |
3069 | ||
3070 | /* If they differ, we need to write to the COW file */ | |
3071 | uint64_t written = 0; | |
3072 | ||
3073 | while (written < n) { | |
3074 | int pnum; | |
3075 | ||
3076 | if (compare_sectors(buf_old + written * 512, | |
60b1bd4f | 3077 | buf_new + written * 512, n - written, &pnum)) |
3e85c6fd | 3078 | { |
9166920a EB |
3079 | ret = blk_pwrite(blk, |
3080 | (sector + written) << BDRV_SECTOR_BITS, | |
3081 | buf_old + written * 512, | |
3082 | pnum << BDRV_SECTOR_BITS, 0); | |
3e85c6fd | 3083 | if (ret < 0) { |
15654a6d | 3084 | error_report("Error while writing to COW image: %s", |
3e85c6fd | 3085 | strerror(-ret)); |
c2abccec | 3086 | goto out; |
3e85c6fd KW |
3087 | } |
3088 | } | |
3089 | ||
3090 | written += pnum; | |
3091 | } | |
6b837bc4 | 3092 | qemu_progress_print(local_progress, 100); |
3e85c6fd KW |
3093 | } |
3094 | } | |
3095 | ||
3096 | /* | |
3097 | * Change the backing file. All clusters that are different from the old | |
3098 | * backing file are overwritten in the COW file now, so the visible content | |
3099 | * doesn't change when we switch the backing file. | |
3100 | */ | |
a616673d AB |
3101 | if (out_baseimg && *out_baseimg) { |
3102 | ret = bdrv_change_backing_file(bs, out_baseimg, out_basefmt); | |
3103 | } else { | |
3104 | ret = bdrv_change_backing_file(bs, NULL, NULL); | |
3105 | } | |
3106 | ||
3e85c6fd | 3107 | if (ret == -ENOSPC) { |
15654a6d JS |
3108 | error_report("Could not change the backing file to '%s': No " |
3109 | "space left in the file header", out_baseimg); | |
3e85c6fd | 3110 | } else if (ret < 0) { |
15654a6d | 3111 | error_report("Could not change the backing file to '%s': %s", |
3e85c6fd KW |
3112 | out_baseimg, strerror(-ret)); |
3113 | } | |
3114 | ||
6b837bc4 | 3115 | qemu_progress_print(100, 0); |
3e85c6fd KW |
3116 | /* |
3117 | * TODO At this point it is possible to check if any clusters that are | |
3118 | * allocated in the COW file are the same in the backing file. If so, they | |
3119 | * could be dropped from the COW file. Don't do this before switching the | |
3120 | * backing file, in case of a crash this would lead to corruption. | |
3121 | */ | |
c2abccec | 3122 | out: |
6b837bc4 | 3123 | qemu_progress_end(); |
3e85c6fd KW |
3124 | /* Cleanup */ |
3125 | if (!unsafe) { | |
26f54e9a | 3126 | blk_unref(blk_old_backing); |
26f54e9a | 3127 | blk_unref(blk_new_backing); |
3e85c6fd | 3128 | } |
396374ca PB |
3129 | qemu_vfree(buf_old); |
3130 | qemu_vfree(buf_new); | |
3e85c6fd | 3131 | |
26f54e9a | 3132 | blk_unref(blk); |
c2abccec MK |
3133 | if (ret) { |
3134 | return 1; | |
3135 | } | |
3e85c6fd KW |
3136 | return 0; |
3137 | } | |
3138 | ||
ae6b0ed6 SH |
3139 | static int img_resize(int argc, char **argv) |
3140 | { | |
6750e795 | 3141 | Error *err = NULL; |
ae6b0ed6 SH |
3142 | int c, ret, relative; |
3143 | const char *filename, *fmt, *size; | |
3144 | int64_t n, total_size; | |
f382d43a | 3145 | bool quiet = false; |
26f54e9a | 3146 | BlockBackend *blk = NULL; |
20caf0f7 | 3147 | QemuOpts *param; |
3babeb15 | 3148 | |
20caf0f7 DXW |
3149 | static QemuOptsList resize_options = { |
3150 | .name = "resize_options", | |
3151 | .head = QTAILQ_HEAD_INITIALIZER(resize_options.head), | |
3152 | .desc = { | |
3153 | { | |
3154 | .name = BLOCK_OPT_SIZE, | |
3155 | .type = QEMU_OPT_SIZE, | |
3156 | .help = "Virtual disk size" | |
3157 | }, { | |
3158 | /* end of list */ | |
3159 | } | |
ae6b0ed6 | 3160 | }, |
ae6b0ed6 | 3161 | }; |
eb769f74 | 3162 | bool image_opts = false; |
ae6b0ed6 | 3163 | |
e80fec7f KW |
3164 | /* Remove size from argv manually so that negative numbers are not treated |
3165 | * as options by getopt. */ | |
3166 | if (argc < 3) { | |
ac1307ab | 3167 | error_exit("Not enough arguments"); |
e80fec7f KW |
3168 | return 1; |
3169 | } | |
3170 | ||
3171 | size = argv[--argc]; | |
3172 | ||
3173 | /* Parse getopt arguments */ | |
ae6b0ed6 SH |
3174 | fmt = NULL; |
3175 | for(;;) { | |
3babeb15 DB |
3176 | static const struct option long_options[] = { |
3177 | {"help", no_argument, 0, 'h'}, | |
3178 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 3179 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
3180 | {0, 0, 0, 0} |
3181 | }; | |
3182 | c = getopt_long(argc, argv, "f:hq", | |
3183 | long_options, NULL); | |
ae6b0ed6 SH |
3184 | if (c == -1) { |
3185 | break; | |
3186 | } | |
3187 | switch(c) { | |
ef87394c | 3188 | case '?': |
ae6b0ed6 SH |
3189 | case 'h': |
3190 | help(); | |
3191 | break; | |
3192 | case 'f': | |
3193 | fmt = optarg; | |
3194 | break; | |
f382d43a MR |
3195 | case 'q': |
3196 | quiet = true; | |
3197 | break; | |
3babeb15 DB |
3198 | case OPTION_OBJECT: { |
3199 | QemuOpts *opts; | |
3200 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
3201 | optarg, true); | |
3202 | if (!opts) { | |
3203 | return 1; | |
3204 | } | |
3205 | } break; | |
eb769f74 DB |
3206 | case OPTION_IMAGE_OPTS: |
3207 | image_opts = true; | |
3208 | break; | |
ae6b0ed6 SH |
3209 | } |
3210 | } | |
fc11eb26 | 3211 | if (optind != argc - 1) { |
ac1307ab | 3212 | error_exit("Expecting one image file name"); |
ae6b0ed6 SH |
3213 | } |
3214 | filename = argv[optind++]; | |
ae6b0ed6 | 3215 | |
3babeb15 DB |
3216 | if (qemu_opts_foreach(&qemu_object_opts, |
3217 | user_creatable_add_opts_foreach, | |
51b9b478 | 3218 | NULL, NULL)) { |
3babeb15 DB |
3219 | return 1; |
3220 | } | |
3221 | ||
ae6b0ed6 SH |
3222 | /* Choose grow, shrink, or absolute resize mode */ |
3223 | switch (size[0]) { | |
3224 | case '+': | |
3225 | relative = 1; | |
3226 | size++; | |
3227 | break; | |
3228 | case '-': | |
3229 | relative = -1; | |
3230 | size++; | |
3231 | break; | |
3232 | default: | |
3233 | relative = 0; | |
3234 | break; | |
3235 | } | |
3236 | ||
3237 | /* Parse size */ | |
87ea75d5 | 3238 | param = qemu_opts_create(&resize_options, NULL, 0, &error_abort); |
f43e47db | 3239 | qemu_opt_set(param, BLOCK_OPT_SIZE, size, &err); |
6750e795 MA |
3240 | if (err) { |
3241 | error_report_err(err); | |
2a81998a | 3242 | ret = -1; |
20caf0f7 | 3243 | qemu_opts_del(param); |
2a81998a | 3244 | goto out; |
ae6b0ed6 | 3245 | } |
20caf0f7 DXW |
3246 | n = qemu_opt_get_size(param, BLOCK_OPT_SIZE, 0); |
3247 | qemu_opts_del(param); | |
ae6b0ed6 | 3248 | |
efaa7c4e | 3249 | blk = img_open(image_opts, filename, fmt, |
ce099547 | 3250 | BDRV_O_RDWR, false, quiet); |
7e7d56d9 | 3251 | if (!blk) { |
2a81998a JS |
3252 | ret = -1; |
3253 | goto out; | |
c2abccec | 3254 | } |
ae6b0ed6 SH |
3255 | |
3256 | if (relative) { | |
f1d3cd79 | 3257 | total_size = blk_getlength(blk) + n * relative; |
ae6b0ed6 SH |
3258 | } else { |
3259 | total_size = n; | |
3260 | } | |
3261 | if (total_size <= 0) { | |
15654a6d | 3262 | error_report("New image size must be positive"); |
c2abccec MK |
3263 | ret = -1; |
3264 | goto out; | |
ae6b0ed6 SH |
3265 | } |
3266 | ||
f1d3cd79 | 3267 | ret = blk_truncate(blk, total_size); |
ae6b0ed6 SH |
3268 | switch (ret) { |
3269 | case 0: | |
f382d43a | 3270 | qprintf(quiet, "Image resized.\n"); |
ae6b0ed6 SH |
3271 | break; |
3272 | case -ENOTSUP: | |
259b2173 | 3273 | error_report("This image does not support resize"); |
ae6b0ed6 SH |
3274 | break; |
3275 | case -EACCES: | |
15654a6d | 3276 | error_report("Image is read-only"); |
ae6b0ed6 SH |
3277 | break; |
3278 | default: | |
15654a6d | 3279 | error_report("Error resizing image (%d)", -ret); |
ae6b0ed6 SH |
3280 | break; |
3281 | } | |
c2abccec | 3282 | out: |
26f54e9a | 3283 | blk_unref(blk); |
c2abccec MK |
3284 | if (ret) { |
3285 | return 1; | |
3286 | } | |
ae6b0ed6 SH |
3287 | return 0; |
3288 | } | |
3289 | ||
76a3a34d | 3290 | static void amend_status_cb(BlockDriverState *bs, |
8b13976d HR |
3291 | int64_t offset, int64_t total_work_size, |
3292 | void *opaque) | |
76a3a34d HR |
3293 | { |
3294 | qemu_progress_print(100.f * offset / total_work_size, 0); | |
3295 | } | |
3296 | ||
6f176b48 HR |
3297 | static int img_amend(int argc, char **argv) |
3298 | { | |
dc523cd3 | 3299 | Error *err = NULL; |
6f176b48 HR |
3300 | int c, ret = 0; |
3301 | char *options = NULL; | |
83d0521a CL |
3302 | QemuOptsList *create_opts = NULL; |
3303 | QemuOpts *opts = NULL; | |
bd39e6ed HR |
3304 | const char *fmt = NULL, *filename, *cache; |
3305 | int flags; | |
ce099547 | 3306 | bool writethrough; |
76a3a34d | 3307 | bool quiet = false, progress = false; |
26f54e9a | 3308 | BlockBackend *blk = NULL; |
6f176b48 | 3309 | BlockDriverState *bs = NULL; |
eb769f74 | 3310 | bool image_opts = false; |
6f176b48 | 3311 | |
bd39e6ed | 3312 | cache = BDRV_DEFAULT_CACHE; |
6f176b48 | 3313 | for (;;) { |
3babeb15 DB |
3314 | static const struct option long_options[] = { |
3315 | {"help", no_argument, 0, 'h'}, | |
3316 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 3317 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
3318 | {0, 0, 0, 0} |
3319 | }; | |
3320 | c = getopt_long(argc, argv, "ho:f:t:pq", | |
3321 | long_options, NULL); | |
6f176b48 HR |
3322 | if (c == -1) { |
3323 | break; | |
3324 | } | |
3325 | ||
3326 | switch (c) { | |
3327 | case 'h': | |
3328 | case '?': | |
3329 | help(); | |
3330 | break; | |
3331 | case 'o': | |
626f84f3 KW |
3332 | if (!is_valid_option_list(optarg)) { |
3333 | error_report("Invalid option list: %s", optarg); | |
3334 | ret = -1; | |
e814dffc | 3335 | goto out_no_progress; |
626f84f3 KW |
3336 | } |
3337 | if (!options) { | |
3338 | options = g_strdup(optarg); | |
3339 | } else { | |
3340 | char *old_options = options; | |
3341 | options = g_strdup_printf("%s,%s", options, optarg); | |
3342 | g_free(old_options); | |
3343 | } | |
6f176b48 HR |
3344 | break; |
3345 | case 'f': | |
3346 | fmt = optarg; | |
3347 | break; | |
bd39e6ed HR |
3348 | case 't': |
3349 | cache = optarg; | |
3350 | break; | |
76a3a34d HR |
3351 | case 'p': |
3352 | progress = true; | |
3353 | break; | |
6f176b48 HR |
3354 | case 'q': |
3355 | quiet = true; | |
3356 | break; | |
3babeb15 DB |
3357 | case OPTION_OBJECT: |
3358 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
3359 | optarg, true); | |
3360 | if (!opts) { | |
3361 | ret = -1; | |
3362 | goto out_no_progress; | |
3363 | } | |
3364 | break; | |
eb769f74 DB |
3365 | case OPTION_IMAGE_OPTS: |
3366 | image_opts = true; | |
3367 | break; | |
6f176b48 HR |
3368 | } |
3369 | } | |
3370 | ||
a283cb6e | 3371 | if (!options) { |
ac1307ab | 3372 | error_exit("Must specify options (-o)"); |
6f176b48 HR |
3373 | } |
3374 | ||
3babeb15 DB |
3375 | if (qemu_opts_foreach(&qemu_object_opts, |
3376 | user_creatable_add_opts_foreach, | |
51b9b478 | 3377 | NULL, NULL)) { |
3babeb15 DB |
3378 | ret = -1; |
3379 | goto out_no_progress; | |
3380 | } | |
3381 | ||
76a3a34d HR |
3382 | if (quiet) { |
3383 | progress = false; | |
3384 | } | |
3385 | qemu_progress_init(progress, 1.0); | |
3386 | ||
a283cb6e KW |
3387 | filename = (optind == argc - 1) ? argv[argc - 1] : NULL; |
3388 | if (fmt && has_help_option(options)) { | |
3389 | /* If a format is explicitly specified (and possibly no filename is | |
3390 | * given), print option help here */ | |
3391 | ret = print_block_option_help(filename, fmt); | |
3392 | goto out; | |
6f176b48 HR |
3393 | } |
3394 | ||
a283cb6e | 3395 | if (optind != argc - 1) { |
b2f27e44 HR |
3396 | error_report("Expecting one image file name"); |
3397 | ret = -1; | |
3398 | goto out; | |
a283cb6e | 3399 | } |
6f176b48 | 3400 | |
ce099547 KW |
3401 | flags = BDRV_O_RDWR; |
3402 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); | |
bd39e6ed HR |
3403 | if (ret < 0) { |
3404 | error_report("Invalid cache option: %s", cache); | |
3405 | goto out; | |
3406 | } | |
3407 | ||
ce099547 | 3408 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet); |
7e7d56d9 | 3409 | if (!blk) { |
6f176b48 HR |
3410 | ret = -1; |
3411 | goto out; | |
3412 | } | |
7e7d56d9 | 3413 | bs = blk_bs(blk); |
6f176b48 HR |
3414 | |
3415 | fmt = bs->drv->format_name; | |
3416 | ||
626f84f3 | 3417 | if (has_help_option(options)) { |
a283cb6e | 3418 | /* If the format was auto-detected, print option help here */ |
6f176b48 HR |
3419 | ret = print_block_option_help(filename, fmt); |
3420 | goto out; | |
3421 | } | |
3422 | ||
b2439d26 HR |
3423 | if (!bs->drv->create_opts) { |
3424 | error_report("Format driver '%s' does not support any options to amend", | |
3425 | fmt); | |
3426 | ret = -1; | |
3427 | goto out; | |
3428 | } | |
3429 | ||
c282e1fd | 3430 | create_opts = qemu_opts_append(create_opts, bs->drv->create_opts); |
83d0521a | 3431 | opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); |
dc523cd3 MA |
3432 | if (options) { |
3433 | qemu_opts_do_parse(opts, options, NULL, &err); | |
3434 | if (err) { | |
97a2ca7a | 3435 | error_report_err(err); |
dc523cd3 MA |
3436 | ret = -1; |
3437 | goto out; | |
3438 | } | |
6f176b48 HR |
3439 | } |
3440 | ||
76a3a34d HR |
3441 | /* In case the driver does not call amend_status_cb() */ |
3442 | qemu_progress_print(0.f, 0); | |
8b13976d | 3443 | ret = bdrv_amend_options(bs, opts, &amend_status_cb, NULL); |
76a3a34d | 3444 | qemu_progress_print(100.f, 0); |
6f176b48 HR |
3445 | if (ret < 0) { |
3446 | error_report("Error while amending options: %s", strerror(-ret)); | |
3447 | goto out; | |
3448 | } | |
3449 | ||
3450 | out: | |
76a3a34d HR |
3451 | qemu_progress_end(); |
3452 | ||
e814dffc | 3453 | out_no_progress: |
26f54e9a | 3454 | blk_unref(blk); |
83d0521a CL |
3455 | qemu_opts_del(opts); |
3456 | qemu_opts_free(create_opts); | |
626f84f3 KW |
3457 | g_free(options); |
3458 | ||
6f176b48 HR |
3459 | if (ret) { |
3460 | return 1; | |
3461 | } | |
3462 | return 0; | |
3463 | } | |
3464 | ||
b6133b8c KW |
3465 | typedef struct BenchData { |
3466 | BlockBackend *blk; | |
3467 | uint64_t image_size; | |
b6495fa8 | 3468 | bool write; |
b6133b8c | 3469 | int bufsize; |
83de9be0 | 3470 | int step; |
b6133b8c KW |
3471 | int nrreq; |
3472 | int n; | |
55d539c8 KW |
3473 | int flush_interval; |
3474 | bool drain_on_flush; | |
b6133b8c KW |
3475 | uint8_t *buf; |
3476 | QEMUIOVector *qiov; | |
3477 | ||
3478 | int in_flight; | |
55d539c8 | 3479 | bool in_flush; |
b6133b8c KW |
3480 | uint64_t offset; |
3481 | } BenchData; | |
3482 | ||
55d539c8 KW |
3483 | static void bench_undrained_flush_cb(void *opaque, int ret) |
3484 | { | |
3485 | if (ret < 0) { | |
3486 | error_report("Failed flush request: %s\n", strerror(-ret)); | |
3487 | exit(EXIT_FAILURE); | |
3488 | } | |
3489 | } | |
3490 | ||
b6133b8c KW |
3491 | static void bench_cb(void *opaque, int ret) |
3492 | { | |
3493 | BenchData *b = opaque; | |
3494 | BlockAIOCB *acb; | |
3495 | ||
3496 | if (ret < 0) { | |
3497 | error_report("Failed request: %s\n", strerror(-ret)); | |
3498 | exit(EXIT_FAILURE); | |
3499 | } | |
55d539c8 KW |
3500 | |
3501 | if (b->in_flush) { | |
3502 | /* Just finished a flush with drained queue: Start next requests */ | |
3503 | assert(b->in_flight == 0); | |
3504 | b->in_flush = false; | |
3505 | } else if (b->in_flight > 0) { | |
3506 | int remaining = b->n - b->in_flight; | |
3507 | ||
b6133b8c KW |
3508 | b->n--; |
3509 | b->in_flight--; | |
55d539c8 KW |
3510 | |
3511 | /* Time for flush? Drain queue if requested, then flush */ | |
3512 | if (b->flush_interval && remaining % b->flush_interval == 0) { | |
3513 | if (!b->in_flight || !b->drain_on_flush) { | |
3514 | BlockCompletionFunc *cb; | |
3515 | ||
3516 | if (b->drain_on_flush) { | |
3517 | b->in_flush = true; | |
3518 | cb = bench_cb; | |
3519 | } else { | |
3520 | cb = bench_undrained_flush_cb; | |
3521 | } | |
3522 | ||
3523 | acb = blk_aio_flush(b->blk, cb, b); | |
3524 | if (!acb) { | |
3525 | error_report("Failed to issue flush request"); | |
3526 | exit(EXIT_FAILURE); | |
3527 | } | |
3528 | } | |
3529 | if (b->drain_on_flush) { | |
3530 | return; | |
3531 | } | |
3532 | } | |
b6133b8c KW |
3533 | } |
3534 | ||
3535 | while (b->n > b->in_flight && b->in_flight < b->nrreq) { | |
b6495fa8 KW |
3536 | if (b->write) { |
3537 | acb = blk_aio_pwritev(b->blk, b->offset, b->qiov, 0, | |
3538 | bench_cb, b); | |
3539 | } else { | |
3540 | acb = blk_aio_preadv(b->blk, b->offset, b->qiov, 0, | |
3541 | bench_cb, b); | |
3542 | } | |
b6133b8c KW |
3543 | if (!acb) { |
3544 | error_report("Failed to issue request"); | |
3545 | exit(EXIT_FAILURE); | |
3546 | } | |
3547 | b->in_flight++; | |
83de9be0 | 3548 | b->offset += b->step; |
b6133b8c KW |
3549 | b->offset %= b->image_size; |
3550 | } | |
3551 | } | |
3552 | ||
3553 | static int img_bench(int argc, char **argv) | |
3554 | { | |
3555 | int c, ret = 0; | |
3556 | const char *fmt = NULL, *filename; | |
3557 | bool quiet = false; | |
3558 | bool image_opts = false; | |
b6495fa8 | 3559 | bool is_write = false; |
b6133b8c KW |
3560 | int count = 75000; |
3561 | int depth = 64; | |
d3199a31 | 3562 | int64_t offset = 0; |
b6133b8c | 3563 | size_t bufsize = 4096; |
b6495fa8 | 3564 | int pattern = 0; |
83de9be0 | 3565 | size_t step = 0; |
55d539c8 KW |
3566 | int flush_interval = 0; |
3567 | bool drain_on_flush = true; | |
b6133b8c KW |
3568 | int64_t image_size; |
3569 | BlockBackend *blk = NULL; | |
3570 | BenchData data = {}; | |
3571 | int flags = 0; | |
3572 | bool writethrough; | |
3573 | struct timeval t1, t2; | |
3574 | int i; | |
3575 | ||
3576 | for (;;) { | |
3577 | static const struct option long_options[] = { | |
3578 | {"help", no_argument, 0, 'h'}, | |
55d539c8 | 3579 | {"flush-interval", required_argument, 0, OPTION_FLUSH_INTERVAL}, |
b6133b8c | 3580 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
b6495fa8 | 3581 | {"pattern", required_argument, 0, OPTION_PATTERN}, |
55d539c8 | 3582 | {"no-drain", no_argument, 0, OPTION_NO_DRAIN}, |
b6133b8c KW |
3583 | {0, 0, 0, 0} |
3584 | }; | |
83de9be0 | 3585 | c = getopt_long(argc, argv, "hc:d:f:no:qs:S:t:w", long_options, NULL); |
b6133b8c KW |
3586 | if (c == -1) { |
3587 | break; | |
3588 | } | |
3589 | ||
3590 | switch (c) { | |
3591 | case 'h': | |
3592 | case '?': | |
3593 | help(); | |
3594 | break; | |
3595 | case 'c': | |
3596 | { | |
3597 | char *end; | |
3598 | errno = 0; | |
3599 | count = strtoul(optarg, &end, 0); | |
3600 | if (errno || *end || count > INT_MAX) { | |
3601 | error_report("Invalid request count specified"); | |
3602 | return 1; | |
3603 | } | |
3604 | break; | |
3605 | } | |
3606 | case 'd': | |
3607 | { | |
3608 | char *end; | |
3609 | errno = 0; | |
3610 | depth = strtoul(optarg, &end, 0); | |
3611 | if (errno || *end || depth > INT_MAX) { | |
3612 | error_report("Invalid queue depth specified"); | |
3613 | return 1; | |
3614 | } | |
3615 | break; | |
3616 | } | |
3617 | case 'f': | |
3618 | fmt = optarg; | |
3619 | break; | |
3620 | case 'n': | |
3621 | flags |= BDRV_O_NATIVE_AIO; | |
3622 | break; | |
d3199a31 KW |
3623 | case 'o': |
3624 | { | |
3625 | char *end; | |
3626 | errno = 0; | |
3627 | offset = qemu_strtosz_suffix(optarg, &end, | |
3628 | QEMU_STRTOSZ_DEFSUFFIX_B); | |
3629 | if (offset < 0|| *end) { | |
3630 | error_report("Invalid offset specified"); | |
3631 | return 1; | |
3632 | } | |
3633 | break; | |
3634 | } | |
3635 | break; | |
b6133b8c KW |
3636 | case 'q': |
3637 | quiet = true; | |
3638 | break; | |
3639 | case 's': | |
3640 | { | |
3641 | int64_t sval; | |
3642 | char *end; | |
3643 | ||
3644 | sval = qemu_strtosz_suffix(optarg, &end, QEMU_STRTOSZ_DEFSUFFIX_B); | |
3645 | if (sval < 0 || sval > INT_MAX || *end) { | |
3646 | error_report("Invalid buffer size specified"); | |
3647 | return 1; | |
3648 | } | |
3649 | ||
3650 | bufsize = sval; | |
3651 | break; | |
3652 | } | |
83de9be0 KW |
3653 | case 'S': |
3654 | { | |
3655 | int64_t sval; | |
3656 | char *end; | |
3657 | ||
3658 | sval = qemu_strtosz_suffix(optarg, &end, QEMU_STRTOSZ_DEFSUFFIX_B); | |
3659 | if (sval < 0 || sval > INT_MAX || *end) { | |
3660 | error_report("Invalid step size specified"); | |
3661 | return 1; | |
3662 | } | |
3663 | ||
3664 | step = sval; | |
3665 | break; | |
3666 | } | |
b6133b8c KW |
3667 | case 't': |
3668 | ret = bdrv_parse_cache_mode(optarg, &flags, &writethrough); | |
3669 | if (ret < 0) { | |
3670 | error_report("Invalid cache mode"); | |
3671 | ret = -1; | |
3672 | goto out; | |
3673 | } | |
3674 | break; | |
b6495fa8 KW |
3675 | case 'w': |
3676 | flags |= BDRV_O_RDWR; | |
3677 | is_write = true; | |
3678 | break; | |
3679 | case OPTION_PATTERN: | |
3680 | { | |
3681 | char *end; | |
3682 | errno = 0; | |
3683 | pattern = strtoul(optarg, &end, 0); | |
3684 | if (errno || *end || pattern > 0xff) { | |
3685 | error_report("Invalid pattern byte specified"); | |
3686 | return 1; | |
3687 | } | |
3688 | break; | |
3689 | } | |
55d539c8 KW |
3690 | case OPTION_FLUSH_INTERVAL: |
3691 | { | |
3692 | char *end; | |
3693 | errno = 0; | |
3694 | flush_interval = strtoul(optarg, &end, 0); | |
3695 | if (errno || *end || flush_interval > INT_MAX) { | |
3696 | error_report("Invalid flush interval specified"); | |
3697 | return 1; | |
3698 | } | |
3699 | break; | |
3700 | } | |
3701 | case OPTION_NO_DRAIN: | |
3702 | drain_on_flush = false; | |
3703 | break; | |
b6133b8c KW |
3704 | case OPTION_IMAGE_OPTS: |
3705 | image_opts = true; | |
3706 | break; | |
3707 | } | |
3708 | } | |
3709 | ||
3710 | if (optind != argc - 1) { | |
3711 | error_exit("Expecting one image file name"); | |
3712 | } | |
3713 | filename = argv[argc - 1]; | |
3714 | ||
55d539c8 KW |
3715 | if (!is_write && flush_interval) { |
3716 | error_report("--flush-interval is only available in write tests"); | |
3717 | ret = -1; | |
3718 | goto out; | |
3719 | } | |
3720 | if (flush_interval && flush_interval < depth) { | |
3721 | error_report("Flush interval can't be smaller than depth"); | |
3722 | ret = -1; | |
3723 | goto out; | |
3724 | } | |
3725 | ||
b6133b8c KW |
3726 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet); |
3727 | if (!blk) { | |
3728 | ret = -1; | |
3729 | goto out; | |
3730 | } | |
3731 | ||
3732 | image_size = blk_getlength(blk); | |
3733 | if (image_size < 0) { | |
3734 | ret = image_size; | |
3735 | goto out; | |
3736 | } | |
3737 | ||
3738 | data = (BenchData) { | |
55d539c8 KW |
3739 | .blk = blk, |
3740 | .image_size = image_size, | |
3741 | .bufsize = bufsize, | |
3742 | .step = step ?: bufsize, | |
3743 | .nrreq = depth, | |
3744 | .n = count, | |
3745 | .offset = offset, | |
3746 | .write = is_write, | |
3747 | .flush_interval = flush_interval, | |
3748 | .drain_on_flush = drain_on_flush, | |
b6133b8c | 3749 | }; |
d3199a31 | 3750 | printf("Sending %d %s requests, %d bytes each, %d in parallel " |
83de9be0 | 3751 | "(starting at offset %" PRId64 ", step size %d)\n", |
d3199a31 | 3752 | data.n, data.write ? "write" : "read", data.bufsize, data.nrreq, |
83de9be0 | 3753 | data.offset, data.step); |
55d539c8 KW |
3754 | if (flush_interval) { |
3755 | printf("Sending flush every %d requests\n", flush_interval); | |
3756 | } | |
b6133b8c KW |
3757 | |
3758 | data.buf = blk_blockalign(blk, data.nrreq * data.bufsize); | |
b6495fa8 KW |
3759 | memset(data.buf, pattern, data.nrreq * data.bufsize); |
3760 | ||
b6133b8c KW |
3761 | data.qiov = g_new(QEMUIOVector, data.nrreq); |
3762 | for (i = 0; i < data.nrreq; i++) { | |
3763 | qemu_iovec_init(&data.qiov[i], 1); | |
3764 | qemu_iovec_add(&data.qiov[i], | |
3765 | data.buf + i * data.bufsize, data.bufsize); | |
3766 | } | |
3767 | ||
3768 | gettimeofday(&t1, NULL); | |
3769 | bench_cb(&data, 0); | |
3770 | ||
3771 | while (data.n > 0) { | |
3772 | main_loop_wait(false); | |
3773 | } | |
3774 | gettimeofday(&t2, NULL); | |
3775 | ||
3776 | printf("Run completed in %3.3f seconds.\n", | |
3777 | (t2.tv_sec - t1.tv_sec) | |
3778 | + ((double)(t2.tv_usec - t1.tv_usec) / 1000000)); | |
3779 | ||
3780 | out: | |
3781 | qemu_vfree(data.buf); | |
3782 | blk_unref(blk); | |
3783 | ||
3784 | if (ret) { | |
3785 | return 1; | |
3786 | } | |
3787 | return 0; | |
3788 | } | |
3789 | ||
3790 | ||
c227f099 | 3791 | static const img_cmd_t img_cmds[] = { |
153859be SB |
3792 | #define DEF(option, callback, arg_string) \ |
3793 | { option, callback }, | |
3794 | #include "qemu-img-cmds.h" | |
3795 | #undef DEF | |
3796 | #undef GEN_DOCS | |
3797 | { NULL, NULL, }, | |
3798 | }; | |
3799 | ||
ea2384d3 FB |
3800 | int main(int argc, char **argv) |
3801 | { | |
c227f099 | 3802 | const img_cmd_t *cmd; |
153859be | 3803 | const char *cmdname; |
2f78e491 | 3804 | Error *local_error = NULL; |
7db1689c | 3805 | int c; |
7db1689c JC |
3806 | static const struct option long_options[] = { |
3807 | {"help", no_argument, 0, 'h'}, | |
5f6979cb | 3808 | {"version", no_argument, 0, 'v'}, |
7db1689c JC |
3809 | {0, 0, 0, 0} |
3810 | }; | |
ea2384d3 | 3811 | |
526eda14 MK |
3812 | #ifdef CONFIG_POSIX |
3813 | signal(SIGPIPE, SIG_IGN); | |
3814 | #endif | |
3815 | ||
53f76e58 | 3816 | error_set_progname(argv[0]); |
10f5bff6 | 3817 | qemu_init_exec_dir(argv[0]); |
53f76e58 | 3818 | |
2f78e491 | 3819 | if (qemu_init_main_loop(&local_error)) { |
565f65d2 | 3820 | error_report_err(local_error); |
2f78e491 CN |
3821 | exit(EXIT_FAILURE); |
3822 | } | |
3823 | ||
e8f2d272 | 3824 | qcrypto_init(&error_fatal); |
c2297088 | 3825 | |
064097d9 | 3826 | module_call_init(MODULE_INIT_QOM); |
ea2384d3 | 3827 | bdrv_init(); |
ac1307ab FZ |
3828 | if (argc < 2) { |
3829 | error_exit("Not enough arguments"); | |
3830 | } | |
153859be | 3831 | cmdname = argv[1]; |
153859be | 3832 | |
3babeb15 | 3833 | qemu_add_opts(&qemu_object_opts); |
eb769f74 | 3834 | qemu_add_opts(&qemu_source_opts); |
3babeb15 | 3835 | |
153859be | 3836 | /* find the command */ |
5f6979cb | 3837 | for (cmd = img_cmds; cmd->name != NULL; cmd++) { |
153859be | 3838 | if (!strcmp(cmdname, cmd->name)) { |
7db1689c | 3839 | return cmd->handler(argc - 1, argv + 1); |
153859be | 3840 | } |
ea2384d3 | 3841 | } |
153859be | 3842 | |
5f6979cb | 3843 | c = getopt_long(argc, argv, "h", long_options, NULL); |
7db1689c JC |
3844 | |
3845 | if (c == 'h') { | |
3846 | help(); | |
3847 | } | |
5f6979cb JC |
3848 | if (c == 'v') { |
3849 | printf(QEMU_IMG_VERSION); | |
3850 | return 0; | |
3851 | } | |
7db1689c | 3852 | |
153859be | 3853 | /* not found */ |
ac1307ab | 3854 | error_exit("Command not found: %s", cmdname); |
ea2384d3 | 3855 | } |