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ea2384d3 | 1 | /* |
fb43f4dd | 2 | * QEMU disk image utility |
5fafdf24 | 3 | * |
68d0f70e | 4 | * Copyright (c) 2003-2008 Fabrice Bellard |
5fafdf24 | 5 | * |
ea2384d3 FB |
6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
7 | * of this software and associated documentation files (the "Software"), to deal | |
8 | * in the Software without restriction, including without limitation the rights | |
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
10 | * copies of the Software, and to permit persons to whom the Software is | |
11 | * furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
22 | * THE SOFTWARE. | |
23 | */ | |
80c71a24 | 24 | #include "qemu/osdep.h" |
67a1de0d | 25 | #include "qemu-version.h" |
da34e65c | 26 | #include "qapi/error.h" |
c054b3fd | 27 | #include "qapi-visit.h" |
b3db211f | 28 | #include "qapi/qobject-output-visitor.h" |
cc7a8ea7 | 29 | #include "qapi/qmp/qerror.h" |
7b1b5d19 | 30 | #include "qapi/qmp/qjson.h" |
f348b6d1 | 31 | #include "qemu/cutils.h" |
3babeb15 | 32 | #include "qemu/config-file.h" |
1de7afc9 PB |
33 | #include "qemu/option.h" |
34 | #include "qemu/error-report.h" | |
06a1e0c1 | 35 | #include "qemu/log.h" |
3babeb15 | 36 | #include "qom/object_interfaces.h" |
9c17d615 | 37 | #include "sysemu/sysemu.h" |
26f54e9a | 38 | #include "sysemu/block-backend.h" |
737e150e | 39 | #include "block/block_int.h" |
d4a3238a | 40 | #include "block/blockjob.h" |
f364ec65 | 41 | #include "block/qapi.h" |
c2297088 | 42 | #include "crypto/init.h" |
06a1e0c1 | 43 | #include "trace/control.h" |
c054b3fd | 44 | #include <getopt.h> |
e8445331 | 45 | |
61979a6a | 46 | #define QEMU_IMG_VERSION "qemu-img version " QEMU_VERSION QEMU_PKGVERSION \ |
0781dd6e | 47 | "\n" QEMU_COPYRIGHT "\n" |
5f6979cb | 48 | |
c227f099 | 49 | typedef struct img_cmd_t { |
153859be SB |
50 | const char *name; |
51 | int (*handler)(int argc, char **argv); | |
c227f099 | 52 | } img_cmd_t; |
153859be | 53 | |
8599ea4c FS |
54 | enum { |
55 | OPTION_OUTPUT = 256, | |
56 | OPTION_BACKING_CHAIN = 257, | |
3babeb15 | 57 | OPTION_OBJECT = 258, |
eb769f74 | 58 | OPTION_IMAGE_OPTS = 259, |
b6495fa8 | 59 | OPTION_PATTERN = 260, |
55d539c8 KW |
60 | OPTION_FLUSH_INTERVAL = 261, |
61 | OPTION_NO_DRAIN = 262, | |
8599ea4c FS |
62 | }; |
63 | ||
64 | typedef enum OutputFormat { | |
65 | OFORMAT_JSON, | |
66 | OFORMAT_HUMAN, | |
67 | } OutputFormat; | |
68 | ||
e6996143 | 69 | /* Default to cache=writeback as data integrity is not important for qemu-img */ |
661a0f71 | 70 | #define BDRV_DEFAULT_CACHE "writeback" |
137519ce | 71 | |
00c6d403 | 72 | static void format_print(void *opaque, const char *name) |
ea2384d3 | 73 | { |
00c6d403 | 74 | printf(" %s", name); |
ea2384d3 FB |
75 | } |
76 | ||
ac1307ab FZ |
77 | static void QEMU_NORETURN GCC_FMT_ATTR(1, 2) error_exit(const char *fmt, ...) |
78 | { | |
79 | va_list ap; | |
80 | ||
81 | error_printf("qemu-img: "); | |
82 | ||
83 | va_start(ap, fmt); | |
84 | error_vprintf(fmt, ap); | |
85 | va_end(ap); | |
86 | ||
87 | error_printf("\nTry 'qemu-img --help' for more information\n"); | |
88 | exit(EXIT_FAILURE); | |
89 | } | |
90 | ||
d2c639d6 | 91 | /* Please keep in synch with qemu-img.texi */ |
ac1307ab | 92 | static void QEMU_NORETURN help(void) |
ea2384d3 | 93 | { |
e00291c0 | 94 | const char *help_msg = |
5f6979cb | 95 | QEMU_IMG_VERSION |
10985131 | 96 | "usage: qemu-img [standard options] command [command options]\n" |
3f020d70 | 97 | "QEMU disk image utility\n" |
98 | "\n" | |
10985131 DL |
99 | " '-h', '--help' display this help and exit\n" |
100 | " '-V', '--version' output version information and exit\n" | |
06a1e0c1 DL |
101 | " '-T', '--trace' [[enable=]<pattern>][,events=<file>][,file=<file>]\n" |
102 | " specify tracing options\n" | |
10985131 | 103 | "\n" |
3f020d70 | 104 | "Command syntax:\n" |
153859be SB |
105 | #define DEF(option, callback, arg_string) \ |
106 | " " arg_string "\n" | |
107 | #include "qemu-img-cmds.h" | |
108 | #undef DEF | |
109 | #undef GEN_DOCS | |
3f020d70 | 110 | "\n" |
111 | "Command parameters:\n" | |
112 | " 'filename' is a disk image filename\n" | |
3babeb15 DB |
113 | " 'objectdef' is a QEMU user creatable object definition. See the qemu(1)\n" |
114 | " manual page for a description of the object properties. The most common\n" | |
115 | " object type is a 'secret', which is used to supply passwords and/or\n" | |
116 | " encryption keys.\n" | |
3f020d70 | 117 | " 'fmt' is the disk image format. It is guessed automatically in most cases\n" |
661a0f71 | 118 | " 'cache' is the cache mode used to write the output disk image, the valid\n" |
80ccf93b LY |
119 | " options are: 'none', 'writeback' (default, except for convert), 'writethrough',\n" |
120 | " 'directsync' and 'unsafe' (default for convert)\n" | |
bb87fdf8 SH |
121 | " 'src_cache' is the cache mode used to read input disk images, the valid\n" |
122 | " options are the same as for the 'cache' option\n" | |
3f020d70 | 123 | " 'size' is the disk image size in bytes. Optional suffixes\n" |
5e00984a KW |
124 | " 'k' or 'K' (kilobyte, 1024), 'M' (megabyte, 1024k), 'G' (gigabyte, 1024M),\n" |
125 | " 'T' (terabyte, 1024G), 'P' (petabyte, 1024T) and 'E' (exabyte, 1024P) are\n" | |
126 | " supported. 'b' is ignored.\n" | |
3f020d70 | 127 | " 'output_filename' is the destination disk image filename\n" |
128 | " 'output_fmt' is the destination format\n" | |
129 | " 'options' is a comma separated list of format specific options in a\n" | |
130 | " name=value format. Use -o ? for an overview of the options supported by the\n" | |
131 | " used format\n" | |
ef80654d WX |
132 | " 'snapshot_param' is param used for internal snapshot, format\n" |
133 | " is 'snapshot.id=[ID],snapshot.name=[NAME]', or\n" | |
134 | " '[ID_OR_NAME]'\n" | |
135 | " 'snapshot_id_or_name' is deprecated, use 'snapshot_param'\n" | |
136 | " instead\n" | |
3f020d70 | 137 | " '-c' indicates that target image must be compressed (qcow format only)\n" |
138 | " '-u' enables unsafe rebasing. It is assumed that old and new backing file\n" | |
139 | " match exactly. The image doesn't need a working backing file before\n" | |
140 | " rebasing in this case (useful for renaming the backing file)\n" | |
141 | " '-h' with or without a command shows this help and lists the supported formats\n" | |
6b837bc4 | 142 | " '-p' show progress of command (only certain commands)\n" |
f382d43a | 143 | " '-q' use Quiet mode - do not print any output (except errors)\n" |
11b6699a PL |
144 | " '-S' indicates the consecutive number of bytes (defaults to 4k) that must\n" |
145 | " contain only zeros for qemu-img to create a sparse image during\n" | |
146 | " conversion. If the number of bytes is 0, the source will not be scanned for\n" | |
147 | " unallocated or zero sectors, and the destination image will always be\n" | |
148 | " fully allocated\n" | |
c054b3fd | 149 | " '--output' takes the format in which the output must be done (human or json)\n" |
b2e10493 AD |
150 | " '-n' skips the target volume creation (useful if the volume is created\n" |
151 | " prior to running qemu-img)\n" | |
3f020d70 | 152 | "\n" |
4534ff54 KW |
153 | "Parameters to check subcommand:\n" |
154 | " '-r' tries to repair any inconsistencies that are found during the check.\n" | |
155 | " '-r leaks' repairs only cluster leaks, whereas '-r all' fixes all\n" | |
156 | " kinds of errors, with a higher risk of choosing the wrong fix or\n" | |
0546b8c2 | 157 | " hiding corruption that has already occurred.\n" |
4534ff54 | 158 | "\n" |
3f020d70 | 159 | "Parameters to snapshot subcommand:\n" |
160 | " 'snapshot' is the name of the snapshot to create, apply or delete\n" | |
161 | " '-a' applies a snapshot (revert disk to saved state)\n" | |
162 | " '-c' creates a snapshot\n" | |
163 | " '-d' deletes a snapshot\n" | |
d14ed18c MR |
164 | " '-l' lists all snapshots in the given image\n" |
165 | "\n" | |
166 | "Parameters to compare subcommand:\n" | |
167 | " '-f' first image format\n" | |
168 | " '-F' second image format\n" | |
86ce1f6e RS |
169 | " '-s' run in Strict mode - fail on different image size or sector allocation\n" |
170 | "\n" | |
171 | "Parameters to dd subcommand:\n" | |
172 | " 'bs=BYTES' read and write up to BYTES bytes at a time " | |
173 | "(default: 512)\n" | |
174 | " 'count=N' copy only N input blocks\n" | |
175 | " 'if=FILE' read from FILE\n" | |
f7c15533 RS |
176 | " 'of=FILE' write to FILE\n" |
177 | " 'skip=N' skip N bs-sized blocks at the start of input\n"; | |
e00291c0 PB |
178 | |
179 | printf("%s\nSupported formats:", help_msg); | |
00c6d403 | 180 | bdrv_iterate_format(format_print, NULL); |
ea2384d3 | 181 | printf("\n"); |
ac1307ab | 182 | exit(EXIT_SUCCESS); |
ea2384d3 FB |
183 | } |
184 | ||
3babeb15 DB |
185 | static QemuOptsList qemu_object_opts = { |
186 | .name = "object", | |
187 | .implied_opt_name = "qom-type", | |
188 | .head = QTAILQ_HEAD_INITIALIZER(qemu_object_opts.head), | |
189 | .desc = { | |
190 | { } | |
191 | }, | |
192 | }; | |
193 | ||
eb769f74 DB |
194 | static QemuOptsList qemu_source_opts = { |
195 | .name = "source", | |
196 | .implied_opt_name = "file", | |
197 | .head = QTAILQ_HEAD_INITIALIZER(qemu_source_opts.head), | |
198 | .desc = { | |
199 | { } | |
200 | }, | |
201 | }; | |
202 | ||
7c30f657 | 203 | static int GCC_FMT_ATTR(2, 3) qprintf(bool quiet, const char *fmt, ...) |
f382d43a MR |
204 | { |
205 | int ret = 0; | |
206 | if (!quiet) { | |
207 | va_list args; | |
208 | va_start(args, fmt); | |
209 | ret = vprintf(fmt, args); | |
210 | va_end(args); | |
211 | } | |
212 | return ret; | |
213 | } | |
214 | ||
ea2384d3 | 215 | |
4ac8aacd JS |
216 | static int print_block_option_help(const char *filename, const char *fmt) |
217 | { | |
218 | BlockDriver *drv, *proto_drv; | |
83d0521a | 219 | QemuOptsList *create_opts = NULL; |
b65a5e12 | 220 | Error *local_err = NULL; |
4ac8aacd JS |
221 | |
222 | /* Find driver and parse its options */ | |
223 | drv = bdrv_find_format(fmt); | |
224 | if (!drv) { | |
15654a6d | 225 | error_report("Unknown file format '%s'", fmt); |
4ac8aacd JS |
226 | return 1; |
227 | } | |
228 | ||
c282e1fd | 229 | create_opts = qemu_opts_append(create_opts, drv->create_opts); |
a283cb6e | 230 | if (filename) { |
b65a5e12 | 231 | proto_drv = bdrv_find_protocol(filename, true, &local_err); |
a283cb6e | 232 | if (!proto_drv) { |
2867ce4a | 233 | error_report_err(local_err); |
83d0521a | 234 | qemu_opts_free(create_opts); |
a283cb6e KW |
235 | return 1; |
236 | } | |
c282e1fd | 237 | create_opts = qemu_opts_append(create_opts, proto_drv->create_opts); |
a283cb6e KW |
238 | } |
239 | ||
83d0521a CL |
240 | qemu_opts_print_help(create_opts); |
241 | qemu_opts_free(create_opts); | |
4ac8aacd JS |
242 | return 0; |
243 | } | |
244 | ||
eb769f74 DB |
245 | |
246 | static int img_open_password(BlockBackend *blk, const char *filename, | |
abb06c5a | 247 | int flags, bool quiet) |
75c23805 FB |
248 | { |
249 | BlockDriverState *bs; | |
75c23805 | 250 | char password[256]; |
eb769f74 DB |
251 | |
252 | bs = blk_bs(blk); | |
4ef130fc DB |
253 | if (bdrv_is_encrypted(bs) && bdrv_key_required(bs) && |
254 | !(flags & BDRV_O_NO_IO)) { | |
eb769f74 DB |
255 | qprintf(quiet, "Disk image '%s' is encrypted.\n", filename); |
256 | if (qemu_read_password(password, sizeof(password)) < 0) { | |
257 | error_report("No password given"); | |
258 | return -1; | |
259 | } | |
260 | if (bdrv_set_key(bs, password) < 0) { | |
261 | error_report("invalid password"); | |
262 | return -1; | |
263 | } | |
264 | } | |
265 | return 0; | |
266 | } | |
267 | ||
268 | ||
efaa7c4e | 269 | static BlockBackend *img_open_opts(const char *optstr, |
ce099547 | 270 | QemuOpts *opts, int flags, bool writethrough, |
abb06c5a | 271 | bool quiet) |
eb769f74 DB |
272 | { |
273 | QDict *options; | |
274 | Error *local_err = NULL; | |
275 | BlockBackend *blk; | |
276 | options = qemu_opts_to_qdict(opts, NULL); | |
efaa7c4e | 277 | blk = blk_new_open(NULL, NULL, options, flags, &local_err); |
eb769f74 | 278 | if (!blk) { |
143605a2 | 279 | error_reportf_err(local_err, "Could not open '%s': ", optstr); |
eb769f74 DB |
280 | return NULL; |
281 | } | |
ce099547 | 282 | blk_set_enable_write_cache(blk, !writethrough); |
eb769f74 | 283 | |
abb06c5a | 284 | if (img_open_password(blk, optstr, flags, quiet) < 0) { |
eb769f74 DB |
285 | blk_unref(blk); |
286 | return NULL; | |
287 | } | |
288 | return blk; | |
289 | } | |
290 | ||
efaa7c4e | 291 | static BlockBackend *img_open_file(const char *filename, |
eb769f74 | 292 | const char *fmt, int flags, |
ce099547 | 293 | bool writethrough, bool quiet) |
eb769f74 DB |
294 | { |
295 | BlockBackend *blk; | |
34b5d2c6 | 296 | Error *local_err = NULL; |
5bd31326 | 297 | QDict *options = NULL; |
ad717139 | 298 | |
75c23805 | 299 | if (fmt) { |
5bd31326 HR |
300 | options = qdict_new(); |
301 | qdict_put(options, "driver", qstring_from_str(fmt)); | |
75c23805 | 302 | } |
b9eaf9ec | 303 | |
efaa7c4e | 304 | blk = blk_new_open(filename, NULL, options, flags, &local_err); |
5bd31326 | 305 | if (!blk) { |
c29b77f9 | 306 | error_reportf_err(local_err, "Could not open '%s': ", filename); |
eb769f74 | 307 | return NULL; |
75c23805 | 308 | } |
ce099547 | 309 | blk_set_enable_write_cache(blk, !writethrough); |
b9eaf9ec | 310 | |
abb06c5a | 311 | if (img_open_password(blk, filename, flags, quiet) < 0) { |
eb769f74 DB |
312 | blk_unref(blk); |
313 | return NULL; | |
314 | } | |
315 | return blk; | |
316 | } | |
317 | ||
318 | ||
efaa7c4e | 319 | static BlockBackend *img_open(bool image_opts, |
eb769f74 | 320 | const char *filename, |
ce099547 | 321 | const char *fmt, int flags, bool writethrough, |
abb06c5a | 322 | bool quiet) |
eb769f74 DB |
323 | { |
324 | BlockBackend *blk; | |
325 | if (image_opts) { | |
326 | QemuOpts *opts; | |
327 | if (fmt) { | |
328 | error_report("--image-opts and --format are mutually exclusive"); | |
329 | return NULL; | |
330 | } | |
331 | opts = qemu_opts_parse_noisily(qemu_find_opts("source"), | |
332 | filename, true); | |
333 | if (!opts) { | |
334 | return NULL; | |
335 | } | |
ce099547 | 336 | blk = img_open_opts(filename, opts, flags, writethrough, quiet); |
eb769f74 | 337 | } else { |
ce099547 | 338 | blk = img_open_file(filename, fmt, flags, writethrough, quiet); |
75c23805 | 339 | } |
7e7d56d9 | 340 | return blk; |
75c23805 FB |
341 | } |
342 | ||
eb769f74 | 343 | |
83d0521a | 344 | static int add_old_style_options(const char *fmt, QemuOpts *opts, |
eec77d9e JS |
345 | const char *base_filename, |
346 | const char *base_fmt) | |
efa84d43 | 347 | { |
6750e795 MA |
348 | Error *err = NULL; |
349 | ||
efa84d43 | 350 | if (base_filename) { |
f43e47db | 351 | qemu_opt_set(opts, BLOCK_OPT_BACKING_FILE, base_filename, &err); |
6750e795 | 352 | if (err) { |
15654a6d JS |
353 | error_report("Backing file not supported for file format '%s'", |
354 | fmt); | |
6750e795 | 355 | error_free(err); |
c2abccec | 356 | return -1; |
efa84d43 KW |
357 | } |
358 | } | |
359 | if (base_fmt) { | |
f43e47db | 360 | qemu_opt_set(opts, BLOCK_OPT_BACKING_FMT, base_fmt, &err); |
6750e795 | 361 | if (err) { |
15654a6d JS |
362 | error_report("Backing file format not supported for file " |
363 | "format '%s'", fmt); | |
6750e795 | 364 | error_free(err); |
c2abccec | 365 | return -1; |
efa84d43 KW |
366 | } |
367 | } | |
c2abccec | 368 | return 0; |
efa84d43 KW |
369 | } |
370 | ||
ea2384d3 FB |
371 | static int img_create(int argc, char **argv) |
372 | { | |
a9300911 | 373 | int c; |
1da7cfbd | 374 | uint64_t img_size = -1; |
ea2384d3 | 375 | const char *fmt = "raw"; |
9230eaf6 | 376 | const char *base_fmt = NULL; |
ea2384d3 FB |
377 | const char *filename; |
378 | const char *base_filename = NULL; | |
9ea2ea71 | 379 | char *options = NULL; |
9b37525a | 380 | Error *local_err = NULL; |
f382d43a | 381 | bool quiet = false; |
3b46e624 | 382 | |
ea2384d3 | 383 | for(;;) { |
3babeb15 DB |
384 | static const struct option long_options[] = { |
385 | {"help", no_argument, 0, 'h'}, | |
386 | {"object", required_argument, 0, OPTION_OBJECT}, | |
387 | {0, 0, 0, 0} | |
388 | }; | |
389 | c = getopt_long(argc, argv, "F:b:f:he6o:q", | |
390 | long_options, NULL); | |
b8fb60da | 391 | if (c == -1) { |
ea2384d3 | 392 | break; |
b8fb60da | 393 | } |
ea2384d3 | 394 | switch(c) { |
ef87394c | 395 | case '?': |
ea2384d3 FB |
396 | case 'h': |
397 | help(); | |
398 | break; | |
9230eaf6 AL |
399 | case 'F': |
400 | base_fmt = optarg; | |
401 | break; | |
ea2384d3 FB |
402 | case 'b': |
403 | base_filename = optarg; | |
404 | break; | |
405 | case 'f': | |
406 | fmt = optarg; | |
407 | break; | |
408 | case 'e': | |
9d42e15d | 409 | error_report("option -e is deprecated, please use \'-o " |
eec77d9e | 410 | "encryption\' instead!"); |
77386bf6 | 411 | goto fail; |
d8871c5a | 412 | case '6': |
9d42e15d | 413 | error_report("option -6 is deprecated, please use \'-o " |
eec77d9e | 414 | "compat6\' instead!"); |
77386bf6 | 415 | goto fail; |
9ea2ea71 | 416 | case 'o': |
77386bf6 KW |
417 | if (!is_valid_option_list(optarg)) { |
418 | error_report("Invalid option list: %s", optarg); | |
419 | goto fail; | |
420 | } | |
421 | if (!options) { | |
422 | options = g_strdup(optarg); | |
423 | } else { | |
424 | char *old_options = options; | |
425 | options = g_strdup_printf("%s,%s", options, optarg); | |
426 | g_free(old_options); | |
427 | } | |
9ea2ea71 | 428 | break; |
f382d43a MR |
429 | case 'q': |
430 | quiet = true; | |
431 | break; | |
3babeb15 DB |
432 | case OPTION_OBJECT: { |
433 | QemuOpts *opts; | |
434 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
435 | optarg, true); | |
436 | if (!opts) { | |
437 | goto fail; | |
438 | } | |
439 | } break; | |
ea2384d3 FB |
440 | } |
441 | } | |
9230eaf6 | 442 | |
b50cbabc | 443 | /* Get the filename */ |
a283cb6e KW |
444 | filename = (optind < argc) ? argv[optind] : NULL; |
445 | if (options && has_help_option(options)) { | |
446 | g_free(options); | |
447 | return print_block_option_help(filename, fmt); | |
448 | } | |
449 | ||
b8fb60da | 450 | if (optind >= argc) { |
ac1307ab | 451 | error_exit("Expecting image file name"); |
b8fb60da | 452 | } |
a283cb6e | 453 | optind++; |
b50cbabc | 454 | |
3babeb15 DB |
455 | if (qemu_opts_foreach(&qemu_object_opts, |
456 | user_creatable_add_opts_foreach, | |
51b9b478 | 457 | NULL, NULL)) { |
3babeb15 DB |
458 | goto fail; |
459 | } | |
460 | ||
1da7cfbd JS |
461 | /* Get image size, if specified */ |
462 | if (optind < argc) { | |
70b4f4bb | 463 | int64_t sval; |
e36b3695 | 464 | char *end; |
4677bb40 MAL |
465 | sval = qemu_strtosz_suffix(argv[optind++], &end, |
466 | QEMU_STRTOSZ_DEFSUFFIX_B); | |
e36b3695 | 467 | if (sval < 0 || *end) { |
79443397 LG |
468 | if (sval == -ERANGE) { |
469 | error_report("Image size must be less than 8 EiB!"); | |
470 | } else { | |
471 | error_report("Invalid image size specified! You may use k, M, " | |
5e00984a KW |
472 | "G, T, P or E suffixes for "); |
473 | error_report("kilobytes, megabytes, gigabytes, terabytes, " | |
474 | "petabytes and exabytes."); | |
79443397 | 475 | } |
77386bf6 | 476 | goto fail; |
1da7cfbd JS |
477 | } |
478 | img_size = (uint64_t)sval; | |
479 | } | |
fc11eb26 | 480 | if (optind != argc) { |
ac1307ab | 481 | error_exit("Unexpected argument: %s", argv[optind]); |
fc11eb26 | 482 | } |
1da7cfbd | 483 | |
9b37525a | 484 | bdrv_img_create(filename, fmt, base_filename, base_fmt, |
61de4c68 | 485 | options, img_size, 0, &local_err, quiet); |
84d18f06 | 486 | if (local_err) { |
c29b77f9 | 487 | error_reportf_err(local_err, "%s: ", filename); |
77386bf6 | 488 | goto fail; |
c2abccec | 489 | } |
a9300911 | 490 | |
77386bf6 | 491 | g_free(options); |
ea2384d3 | 492 | return 0; |
77386bf6 KW |
493 | |
494 | fail: | |
495 | g_free(options); | |
496 | return 1; | |
ea2384d3 FB |
497 | } |
498 | ||
f382d43a | 499 | static void dump_json_image_check(ImageCheck *check, bool quiet) |
8599ea4c | 500 | { |
8599ea4c | 501 | QString *str; |
8599ea4c | 502 | QObject *obj; |
7d5e199a | 503 | Visitor *v = qobject_output_visitor_new(&obj); |
3b098d56 EB |
504 | |
505 | visit_type_ImageCheck(v, NULL, &check, &error_abort); | |
506 | visit_complete(v, &obj); | |
8599ea4c FS |
507 | str = qobject_to_json_pretty(obj); |
508 | assert(str != NULL); | |
f382d43a | 509 | qprintf(quiet, "%s\n", qstring_get_str(str)); |
8599ea4c | 510 | qobject_decref(obj); |
3b098d56 | 511 | visit_free(v); |
8599ea4c FS |
512 | QDECREF(str); |
513 | } | |
514 | ||
f382d43a | 515 | static void dump_human_image_check(ImageCheck *check, bool quiet) |
8599ea4c FS |
516 | { |
517 | if (!(check->corruptions || check->leaks || check->check_errors)) { | |
f382d43a | 518 | qprintf(quiet, "No errors were found on the image.\n"); |
8599ea4c FS |
519 | } else { |
520 | if (check->corruptions) { | |
f382d43a MR |
521 | qprintf(quiet, "\n%" PRId64 " errors were found on the image.\n" |
522 | "Data may be corrupted, or further writes to the image " | |
523 | "may corrupt it.\n", | |
524 | check->corruptions); | |
8599ea4c FS |
525 | } |
526 | ||
527 | if (check->leaks) { | |
f382d43a MR |
528 | qprintf(quiet, |
529 | "\n%" PRId64 " leaked clusters were found on the image.\n" | |
530 | "This means waste of disk space, but no harm to data.\n", | |
531 | check->leaks); | |
8599ea4c FS |
532 | } |
533 | ||
534 | if (check->check_errors) { | |
f382d43a MR |
535 | qprintf(quiet, |
536 | "\n%" PRId64 | |
537 | " internal errors have occurred during the check.\n", | |
538 | check->check_errors); | |
8599ea4c FS |
539 | } |
540 | } | |
541 | ||
542 | if (check->total_clusters != 0 && check->allocated_clusters != 0) { | |
f382d43a MR |
543 | qprintf(quiet, "%" PRId64 "/%" PRId64 " = %0.2f%% allocated, " |
544 | "%0.2f%% fragmented, %0.2f%% compressed clusters\n", | |
545 | check->allocated_clusters, check->total_clusters, | |
546 | check->allocated_clusters * 100.0 / check->total_clusters, | |
547 | check->fragmented_clusters * 100.0 / check->allocated_clusters, | |
548 | check->compressed_clusters * 100.0 / | |
549 | check->allocated_clusters); | |
8599ea4c FS |
550 | } |
551 | ||
552 | if (check->image_end_offset) { | |
f382d43a MR |
553 | qprintf(quiet, |
554 | "Image end offset: %" PRId64 "\n", check->image_end_offset); | |
8599ea4c FS |
555 | } |
556 | } | |
557 | ||
558 | static int collect_image_check(BlockDriverState *bs, | |
559 | ImageCheck *check, | |
560 | const char *filename, | |
561 | const char *fmt, | |
562 | int fix) | |
563 | { | |
564 | int ret; | |
565 | BdrvCheckResult result; | |
566 | ||
567 | ret = bdrv_check(bs, &result, fix); | |
568 | if (ret < 0) { | |
569 | return ret; | |
570 | } | |
571 | ||
572 | check->filename = g_strdup(filename); | |
573 | check->format = g_strdup(bdrv_get_format_name(bs)); | |
574 | check->check_errors = result.check_errors; | |
575 | check->corruptions = result.corruptions; | |
576 | check->has_corruptions = result.corruptions != 0; | |
577 | check->leaks = result.leaks; | |
578 | check->has_leaks = result.leaks != 0; | |
579 | check->corruptions_fixed = result.corruptions_fixed; | |
580 | check->has_corruptions_fixed = result.corruptions != 0; | |
581 | check->leaks_fixed = result.leaks_fixed; | |
582 | check->has_leaks_fixed = result.leaks != 0; | |
583 | check->image_end_offset = result.image_end_offset; | |
584 | check->has_image_end_offset = result.image_end_offset != 0; | |
585 | check->total_clusters = result.bfi.total_clusters; | |
586 | check->has_total_clusters = result.bfi.total_clusters != 0; | |
587 | check->allocated_clusters = result.bfi.allocated_clusters; | |
588 | check->has_allocated_clusters = result.bfi.allocated_clusters != 0; | |
589 | check->fragmented_clusters = result.bfi.fragmented_clusters; | |
590 | check->has_fragmented_clusters = result.bfi.fragmented_clusters != 0; | |
e6439d78 SH |
591 | check->compressed_clusters = result.bfi.compressed_clusters; |
592 | check->has_compressed_clusters = result.bfi.compressed_clusters != 0; | |
8599ea4c FS |
593 | |
594 | return 0; | |
595 | } | |
596 | ||
e076f338 KW |
597 | /* |
598 | * Checks an image for consistency. Exit codes: | |
599 | * | |
d6635c4d HR |
600 | * 0 - Check completed, image is good |
601 | * 1 - Check not completed because of internal errors | |
602 | * 2 - Check completed, image is corrupted | |
603 | * 3 - Check completed, image has leaked clusters, but is good otherwise | |
604 | * 63 - Checks are not supported by the image format | |
e076f338 | 605 | */ |
1585969c AL |
606 | static int img_check(int argc, char **argv) |
607 | { | |
608 | int c, ret; | |
8599ea4c | 609 | OutputFormat output_format = OFORMAT_HUMAN; |
40055951 | 610 | const char *filename, *fmt, *output, *cache; |
26f54e9a | 611 | BlockBackend *blk; |
1585969c | 612 | BlockDriverState *bs; |
4534ff54 | 613 | int fix = 0; |
ce099547 KW |
614 | int flags = BDRV_O_CHECK; |
615 | bool writethrough; | |
7e7d56d9 | 616 | ImageCheck *check; |
f382d43a | 617 | bool quiet = false; |
eb769f74 | 618 | bool image_opts = false; |
1585969c AL |
619 | |
620 | fmt = NULL; | |
8599ea4c | 621 | output = NULL; |
40055951 | 622 | cache = BDRV_DEFAULT_CACHE; |
ce099547 | 623 | |
1585969c | 624 | for(;;) { |
8599ea4c FS |
625 | int option_index = 0; |
626 | static const struct option long_options[] = { | |
627 | {"help", no_argument, 0, 'h'}, | |
628 | {"format", required_argument, 0, 'f'}, | |
4fd6a984 | 629 | {"repair", required_argument, 0, 'r'}, |
8599ea4c | 630 | {"output", required_argument, 0, OPTION_OUTPUT}, |
3babeb15 | 631 | {"object", required_argument, 0, OPTION_OBJECT}, |
eb769f74 | 632 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
8599ea4c FS |
633 | {0, 0, 0, 0} |
634 | }; | |
40055951 | 635 | c = getopt_long(argc, argv, "hf:r:T:q", |
8599ea4c | 636 | long_options, &option_index); |
b8fb60da | 637 | if (c == -1) { |
1585969c | 638 | break; |
b8fb60da | 639 | } |
1585969c | 640 | switch(c) { |
ef87394c | 641 | case '?': |
1585969c AL |
642 | case 'h': |
643 | help(); | |
644 | break; | |
645 | case 'f': | |
646 | fmt = optarg; | |
647 | break; | |
4534ff54 KW |
648 | case 'r': |
649 | flags |= BDRV_O_RDWR; | |
650 | ||
651 | if (!strcmp(optarg, "leaks")) { | |
652 | fix = BDRV_FIX_LEAKS; | |
653 | } else if (!strcmp(optarg, "all")) { | |
654 | fix = BDRV_FIX_LEAKS | BDRV_FIX_ERRORS; | |
655 | } else { | |
ac1307ab FZ |
656 | error_exit("Unknown option value for -r " |
657 | "(expecting 'leaks' or 'all'): %s", optarg); | |
4534ff54 KW |
658 | } |
659 | break; | |
8599ea4c FS |
660 | case OPTION_OUTPUT: |
661 | output = optarg; | |
662 | break; | |
40055951 HR |
663 | case 'T': |
664 | cache = optarg; | |
665 | break; | |
f382d43a MR |
666 | case 'q': |
667 | quiet = true; | |
668 | break; | |
3babeb15 DB |
669 | case OPTION_OBJECT: { |
670 | QemuOpts *opts; | |
671 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
672 | optarg, true); | |
673 | if (!opts) { | |
674 | return 1; | |
675 | } | |
676 | } break; | |
eb769f74 DB |
677 | case OPTION_IMAGE_OPTS: |
678 | image_opts = true; | |
679 | break; | |
1585969c AL |
680 | } |
681 | } | |
fc11eb26 | 682 | if (optind != argc - 1) { |
ac1307ab | 683 | error_exit("Expecting one image file name"); |
b8fb60da | 684 | } |
1585969c AL |
685 | filename = argv[optind++]; |
686 | ||
8599ea4c FS |
687 | if (output && !strcmp(output, "json")) { |
688 | output_format = OFORMAT_JSON; | |
689 | } else if (output && !strcmp(output, "human")) { | |
690 | output_format = OFORMAT_HUMAN; | |
691 | } else if (output) { | |
692 | error_report("--output must be used with human or json as argument."); | |
693 | return 1; | |
694 | } | |
695 | ||
3babeb15 DB |
696 | if (qemu_opts_foreach(&qemu_object_opts, |
697 | user_creatable_add_opts_foreach, | |
51b9b478 | 698 | NULL, NULL)) { |
3babeb15 DB |
699 | return 1; |
700 | } | |
701 | ||
ce099547 | 702 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); |
40055951 HR |
703 | if (ret < 0) { |
704 | error_report("Invalid source cache option: %s", cache); | |
705 | return 1; | |
706 | } | |
707 | ||
ce099547 | 708 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet); |
7e7d56d9 MA |
709 | if (!blk) { |
710 | return 1; | |
c2abccec | 711 | } |
7e7d56d9 | 712 | bs = blk_bs(blk); |
8599ea4c FS |
713 | |
714 | check = g_new0(ImageCheck, 1); | |
715 | ret = collect_image_check(bs, check, filename, fmt, fix); | |
e076f338 KW |
716 | |
717 | if (ret == -ENOTSUP) { | |
55d492d7 | 718 | error_report("This image format does not support checks"); |
fefddf95 | 719 | ret = 63; |
8599ea4c | 720 | goto fail; |
e076f338 KW |
721 | } |
722 | ||
8599ea4c FS |
723 | if (check->corruptions_fixed || check->leaks_fixed) { |
724 | int corruptions_fixed, leaks_fixed; | |
ccf34716 | 725 | |
8599ea4c FS |
726 | leaks_fixed = check->leaks_fixed; |
727 | corruptions_fixed = check->corruptions_fixed; | |
e076f338 | 728 | |
8599ea4c | 729 | if (output_format == OFORMAT_HUMAN) { |
f382d43a MR |
730 | qprintf(quiet, |
731 | "The following inconsistencies were found and repaired:\n\n" | |
732 | " %" PRId64 " leaked clusters\n" | |
733 | " %" PRId64 " corruptions\n\n" | |
734 | "Double checking the fixed image now...\n", | |
735 | check->leaks_fixed, | |
736 | check->corruptions_fixed); | |
e076f338 KW |
737 | } |
738 | ||
8599ea4c | 739 | ret = collect_image_check(bs, check, filename, fmt, 0); |
1585969c | 740 | |
8599ea4c FS |
741 | check->leaks_fixed = leaks_fixed; |
742 | check->corruptions_fixed = corruptions_fixed; | |
f8111c24 DXW |
743 | } |
744 | ||
832390a5 HR |
745 | if (!ret) { |
746 | switch (output_format) { | |
747 | case OFORMAT_HUMAN: | |
748 | dump_human_image_check(check, quiet); | |
749 | break; | |
750 | case OFORMAT_JSON: | |
751 | dump_json_image_check(check, quiet); | |
752 | break; | |
753 | } | |
c6bb9ad1 FS |
754 | } |
755 | ||
8599ea4c | 756 | if (ret || check->check_errors) { |
832390a5 HR |
757 | if (ret) { |
758 | error_report("Check failed: %s", strerror(-ret)); | |
759 | } else { | |
760 | error_report("Check failed"); | |
761 | } | |
8599ea4c FS |
762 | ret = 1; |
763 | goto fail; | |
c2abccec | 764 | } |
e076f338 | 765 | |
8599ea4c FS |
766 | if (check->corruptions) { |
767 | ret = 2; | |
768 | } else if (check->leaks) { | |
769 | ret = 3; | |
e076f338 | 770 | } else { |
8599ea4c | 771 | ret = 0; |
e076f338 | 772 | } |
8599ea4c FS |
773 | |
774 | fail: | |
775 | qapi_free_ImageCheck(check); | |
26f54e9a | 776 | blk_unref(blk); |
8599ea4c | 777 | return ret; |
1585969c AL |
778 | } |
779 | ||
d4a3238a HR |
780 | typedef struct CommonBlockJobCBInfo { |
781 | BlockDriverState *bs; | |
782 | Error **errp; | |
783 | } CommonBlockJobCBInfo; | |
784 | ||
785 | static void common_block_job_cb(void *opaque, int ret) | |
786 | { | |
787 | CommonBlockJobCBInfo *cbi = opaque; | |
788 | ||
789 | if (ret < 0) { | |
790 | error_setg_errno(cbi->errp, -ret, "Block job failed"); | |
791 | } | |
d4a3238a HR |
792 | } |
793 | ||
794 | static void run_block_job(BlockJob *job, Error **errp) | |
795 | { | |
b75536c9 | 796 | AioContext *aio_context = blk_get_aio_context(job->blk); |
d4a3238a | 797 | |
9e944cb4 | 798 | aio_context_acquire(aio_context); |
d4a3238a HR |
799 | do { |
800 | aio_poll(aio_context, true); | |
62547b8a JS |
801 | qemu_progress_print(job->len ? |
802 | ((float)job->offset / job->len * 100.f) : 0.0f, 0); | |
d4a3238a HR |
803 | } while (!job->ready); |
804 | ||
805 | block_job_complete_sync(job, errp); | |
9e944cb4 | 806 | aio_context_release(aio_context); |
687fa1d8 HR |
807 | |
808 | /* A block job may finish instantaneously without publishing any progress, | |
809 | * so just signal completion here */ | |
810 | qemu_progress_print(100.f, 0); | |
d4a3238a HR |
811 | } |
812 | ||
ea2384d3 FB |
813 | static int img_commit(int argc, char **argv) |
814 | { | |
661a0f71 | 815 | int c, ret, flags; |
1b22bffd | 816 | const char *filename, *fmt, *cache, *base; |
26f54e9a | 817 | BlockBackend *blk; |
d4a3238a | 818 | BlockDriverState *bs, *base_bs; |
687fa1d8 | 819 | bool progress = false, quiet = false, drop = false; |
ce099547 | 820 | bool writethrough; |
d4a3238a HR |
821 | Error *local_err = NULL; |
822 | CommonBlockJobCBInfo cbi; | |
eb769f74 | 823 | bool image_opts = false; |
9e944cb4 | 824 | AioContext *aio_context; |
ea2384d3 FB |
825 | |
826 | fmt = NULL; | |
661a0f71 | 827 | cache = BDRV_DEFAULT_CACHE; |
1b22bffd | 828 | base = NULL; |
ea2384d3 | 829 | for(;;) { |
3babeb15 DB |
830 | static const struct option long_options[] = { |
831 | {"help", no_argument, 0, 'h'}, | |
832 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 833 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
834 | {0, 0, 0, 0} |
835 | }; | |
836 | c = getopt_long(argc, argv, "f:ht:b:dpq", | |
837 | long_options, NULL); | |
b8fb60da | 838 | if (c == -1) { |
ea2384d3 | 839 | break; |
b8fb60da | 840 | } |
ea2384d3 | 841 | switch(c) { |
ef87394c | 842 | case '?': |
ea2384d3 FB |
843 | case 'h': |
844 | help(); | |
845 | break; | |
846 | case 'f': | |
847 | fmt = optarg; | |
848 | break; | |
661a0f71 FS |
849 | case 't': |
850 | cache = optarg; | |
851 | break; | |
1b22bffd HR |
852 | case 'b': |
853 | base = optarg; | |
854 | /* -b implies -d */ | |
855 | drop = true; | |
856 | break; | |
9a86fe48 HR |
857 | case 'd': |
858 | drop = true; | |
859 | break; | |
687fa1d8 HR |
860 | case 'p': |
861 | progress = true; | |
862 | break; | |
f382d43a MR |
863 | case 'q': |
864 | quiet = true; | |
865 | break; | |
3babeb15 DB |
866 | case OPTION_OBJECT: { |
867 | QemuOpts *opts; | |
868 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
869 | optarg, true); | |
870 | if (!opts) { | |
871 | return 1; | |
872 | } | |
873 | } break; | |
eb769f74 DB |
874 | case OPTION_IMAGE_OPTS: |
875 | image_opts = true; | |
876 | break; | |
ea2384d3 FB |
877 | } |
878 | } | |
687fa1d8 HR |
879 | |
880 | /* Progress is not shown in Quiet mode */ | |
881 | if (quiet) { | |
882 | progress = false; | |
883 | } | |
884 | ||
fc11eb26 | 885 | if (optind != argc - 1) { |
ac1307ab | 886 | error_exit("Expecting one image file name"); |
b8fb60da | 887 | } |
ea2384d3 FB |
888 | filename = argv[optind++]; |
889 | ||
3babeb15 DB |
890 | if (qemu_opts_foreach(&qemu_object_opts, |
891 | user_creatable_add_opts_foreach, | |
51b9b478 | 892 | NULL, NULL)) { |
3babeb15 DB |
893 | return 1; |
894 | } | |
895 | ||
9a86fe48 | 896 | flags = BDRV_O_RDWR | BDRV_O_UNMAP; |
ce099547 | 897 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); |
661a0f71 FS |
898 | if (ret < 0) { |
899 | error_report("Invalid cache option: %s", cache); | |
a3981eb9 | 900 | return 1; |
661a0f71 FS |
901 | } |
902 | ||
ce099547 | 903 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet); |
7e7d56d9 MA |
904 | if (!blk) { |
905 | return 1; | |
c2abccec | 906 | } |
7e7d56d9 MA |
907 | bs = blk_bs(blk); |
908 | ||
687fa1d8 HR |
909 | qemu_progress_init(progress, 1.f); |
910 | qemu_progress_print(0.f, 100); | |
911 | ||
1b22bffd HR |
912 | if (base) { |
913 | base_bs = bdrv_find_backing_image(bs, base); | |
914 | if (!base_bs) { | |
c6bd8c70 | 915 | error_setg(&local_err, QERR_BASE_NOT_FOUND, base); |
1b22bffd HR |
916 | goto done; |
917 | } | |
918 | } else { | |
919 | /* This is different from QMP, which by default uses the deepest file in | |
920 | * the backing chain (i.e., the very base); however, the traditional | |
921 | * behavior of qemu-img commit is using the immediate backing file. */ | |
760e0063 | 922 | base_bs = backing_bs(bs); |
1b22bffd HR |
923 | if (!base_bs) { |
924 | error_setg(&local_err, "Image does not have a backing file"); | |
925 | goto done; | |
926 | } | |
d4a3238a HR |
927 | } |
928 | ||
929 | cbi = (CommonBlockJobCBInfo){ | |
930 | .errp = &local_err, | |
931 | .bs = bs, | |
932 | }; | |
933 | ||
9e944cb4 PB |
934 | aio_context = bdrv_get_aio_context(bs); |
935 | aio_context_acquire(aio_context); | |
47970dfb JS |
936 | commit_active_start("commit", bs, base_bs, BLOCK_JOB_DEFAULT, 0, |
937 | BLOCKDEV_ON_ERROR_REPORT, common_block_job_cb, &cbi, | |
938 | &local_err, false); | |
9e944cb4 | 939 | aio_context_release(aio_context); |
d4a3238a HR |
940 | if (local_err) { |
941 | goto done; | |
ea2384d3 FB |
942 | } |
943 | ||
3f09bfbc KW |
944 | /* When the block job completes, the BlockBackend reference will point to |
945 | * the old backing file. In order to avoid that the top image is already | |
946 | * deleted, so we can still empty it afterwards, increment the reference | |
947 | * counter here preemptively. */ | |
9a86fe48 | 948 | if (!drop) { |
3f09bfbc | 949 | bdrv_ref(bs); |
9a86fe48 HR |
950 | } |
951 | ||
d4a3238a | 952 | run_block_job(bs->job, &local_err); |
9a86fe48 HR |
953 | if (local_err) { |
954 | goto unref_backing; | |
955 | } | |
956 | ||
3f09bfbc KW |
957 | if (!drop && bs->drv->bdrv_make_empty) { |
958 | ret = bs->drv->bdrv_make_empty(bs); | |
9a86fe48 HR |
959 | if (ret) { |
960 | error_setg_errno(&local_err, -ret, "Could not empty %s", | |
961 | filename); | |
962 | goto unref_backing; | |
963 | } | |
964 | } | |
965 | ||
966 | unref_backing: | |
967 | if (!drop) { | |
3f09bfbc | 968 | bdrv_unref(bs); |
9a86fe48 | 969 | } |
d4a3238a HR |
970 | |
971 | done: | |
687fa1d8 HR |
972 | qemu_progress_end(); |
973 | ||
26f54e9a | 974 | blk_unref(blk); |
d4a3238a HR |
975 | |
976 | if (local_err) { | |
6936f299 | 977 | error_report_err(local_err); |
c2abccec MK |
978 | return 1; |
979 | } | |
d4a3238a HR |
980 | |
981 | qprintf(quiet, "Image committed.\n"); | |
ea2384d3 FB |
982 | return 0; |
983 | } | |
984 | ||
f58c7b35 TS |
985 | /* |
986 | * Returns true iff the first sector pointed to by 'buf' contains at least | |
987 | * a non-NUL byte. | |
988 | * | |
989 | * 'pnum' is set to the number of sectors (including and immediately following | |
990 | * the first one) that are known to be in the same allocated/unallocated state. | |
991 | */ | |
ea2384d3 FB |
992 | static int is_allocated_sectors(const uint8_t *buf, int n, int *pnum) |
993 | { | |
1a6d39fd SH |
994 | bool is_zero; |
995 | int i; | |
ea2384d3 FB |
996 | |
997 | if (n <= 0) { | |
998 | *pnum = 0; | |
999 | return 0; | |
1000 | } | |
1a6d39fd | 1001 | is_zero = buffer_is_zero(buf, 512); |
ea2384d3 FB |
1002 | for(i = 1; i < n; i++) { |
1003 | buf += 512; | |
1a6d39fd | 1004 | if (is_zero != buffer_is_zero(buf, 512)) { |
ea2384d3 | 1005 | break; |
1a6d39fd | 1006 | } |
ea2384d3 FB |
1007 | } |
1008 | *pnum = i; | |
1a6d39fd | 1009 | return !is_zero; |
ea2384d3 FB |
1010 | } |
1011 | ||
a22f123c KW |
1012 | /* |
1013 | * Like is_allocated_sectors, but if the buffer starts with a used sector, | |
1014 | * up to 'min' consecutive sectors containing zeros are ignored. This avoids | |
1015 | * breaking up write requests for only small sparse areas. | |
1016 | */ | |
1017 | static int is_allocated_sectors_min(const uint8_t *buf, int n, int *pnum, | |
1018 | int min) | |
1019 | { | |
1020 | int ret; | |
1021 | int num_checked, num_used; | |
1022 | ||
1023 | if (n < min) { | |
1024 | min = n; | |
1025 | } | |
1026 | ||
1027 | ret = is_allocated_sectors(buf, n, pnum); | |
1028 | if (!ret) { | |
1029 | return ret; | |
1030 | } | |
1031 | ||
1032 | num_used = *pnum; | |
1033 | buf += BDRV_SECTOR_SIZE * *pnum; | |
1034 | n -= *pnum; | |
1035 | num_checked = num_used; | |
1036 | ||
1037 | while (n > 0) { | |
1038 | ret = is_allocated_sectors(buf, n, pnum); | |
1039 | ||
1040 | buf += BDRV_SECTOR_SIZE * *pnum; | |
1041 | n -= *pnum; | |
1042 | num_checked += *pnum; | |
1043 | if (ret) { | |
1044 | num_used = num_checked; | |
1045 | } else if (*pnum >= min) { | |
1046 | break; | |
1047 | } | |
1048 | } | |
1049 | ||
1050 | *pnum = num_used; | |
1051 | return 1; | |
1052 | } | |
1053 | ||
3e85c6fd KW |
1054 | /* |
1055 | * Compares two buffers sector by sector. Returns 0 if the first sector of both | |
1056 | * buffers matches, non-zero otherwise. | |
1057 | * | |
1058 | * pnum is set to the number of sectors (including and immediately following | |
1059 | * the first one) that are known to have the same comparison result | |
1060 | */ | |
1061 | static int compare_sectors(const uint8_t *buf1, const uint8_t *buf2, int n, | |
1062 | int *pnum) | |
1063 | { | |
8c1ac475 RK |
1064 | bool res; |
1065 | int i; | |
3e85c6fd KW |
1066 | |
1067 | if (n <= 0) { | |
1068 | *pnum = 0; | |
1069 | return 0; | |
1070 | } | |
1071 | ||
1072 | res = !!memcmp(buf1, buf2, 512); | |
1073 | for(i = 1; i < n; i++) { | |
1074 | buf1 += 512; | |
1075 | buf2 += 512; | |
1076 | ||
1077 | if (!!memcmp(buf1, buf2, 512) != res) { | |
1078 | break; | |
1079 | } | |
1080 | } | |
1081 | ||
1082 | *pnum = i; | |
1083 | return res; | |
1084 | } | |
1085 | ||
80ee15a6 | 1086 | #define IO_BUF_SIZE (2 * 1024 * 1024) |
ea2384d3 | 1087 | |
d14ed18c MR |
1088 | static int64_t sectors_to_bytes(int64_t sectors) |
1089 | { | |
1090 | return sectors << BDRV_SECTOR_BITS; | |
1091 | } | |
1092 | ||
1093 | static int64_t sectors_to_process(int64_t total, int64_t from) | |
1094 | { | |
1095 | return MIN(total - from, IO_BUF_SIZE >> BDRV_SECTOR_BITS); | |
1096 | } | |
1097 | ||
1098 | /* | |
1099 | * Check if passed sectors are empty (not allocated or contain only 0 bytes) | |
1100 | * | |
1101 | * Returns 0 in case sectors are filled with 0, 1 if sectors contain non-zero | |
1102 | * data and negative value on error. | |
1103 | * | |
f1d3cd79 | 1104 | * @param blk: BlockBackend for the image |
d14ed18c MR |
1105 | * @param sect_num: Number of first sector to check |
1106 | * @param sect_count: Number of sectors to check | |
1107 | * @param filename: Name of disk file we are checking (logging purpose) | |
1108 | * @param buffer: Allocated buffer for storing read data | |
1109 | * @param quiet: Flag for quiet mode | |
1110 | */ | |
f1d3cd79 | 1111 | static int check_empty_sectors(BlockBackend *blk, int64_t sect_num, |
d14ed18c MR |
1112 | int sect_count, const char *filename, |
1113 | uint8_t *buffer, bool quiet) | |
1114 | { | |
1115 | int pnum, ret = 0; | |
9166920a EB |
1116 | ret = blk_pread(blk, sect_num << BDRV_SECTOR_BITS, buffer, |
1117 | sect_count << BDRV_SECTOR_BITS); | |
d14ed18c MR |
1118 | if (ret < 0) { |
1119 | error_report("Error while reading offset %" PRId64 " of %s: %s", | |
1120 | sectors_to_bytes(sect_num), filename, strerror(-ret)); | |
1121 | return ret; | |
1122 | } | |
1123 | ret = is_allocated_sectors(buffer, sect_count, &pnum); | |
1124 | if (ret || pnum != sect_count) { | |
1125 | qprintf(quiet, "Content mismatch at offset %" PRId64 "!\n", | |
1126 | sectors_to_bytes(ret ? sect_num : sect_num + pnum)); | |
1127 | return 1; | |
1128 | } | |
1129 | ||
1130 | return 0; | |
1131 | } | |
1132 | ||
1133 | /* | |
1134 | * Compares two images. Exit codes: | |
1135 | * | |
1136 | * 0 - Images are identical | |
1137 | * 1 - Images differ | |
1138 | * >1 - Error occurred | |
1139 | */ | |
1140 | static int img_compare(int argc, char **argv) | |
1141 | { | |
40055951 | 1142 | const char *fmt1 = NULL, *fmt2 = NULL, *cache, *filename1, *filename2; |
26f54e9a | 1143 | BlockBackend *blk1, *blk2; |
d14ed18c MR |
1144 | BlockDriverState *bs1, *bs2; |
1145 | int64_t total_sectors1, total_sectors2; | |
1146 | uint8_t *buf1 = NULL, *buf2 = NULL; | |
1147 | int pnum1, pnum2; | |
1148 | int allocated1, allocated2; | |
1149 | int ret = 0; /* return value - 0 Ident, 1 Different, >1 Error */ | |
1150 | bool progress = false, quiet = false, strict = false; | |
40055951 | 1151 | int flags; |
ce099547 | 1152 | bool writethrough; |
d14ed18c MR |
1153 | int64_t total_sectors; |
1154 | int64_t sector_num = 0; | |
1155 | int64_t nb_sectors; | |
1156 | int c, pnum; | |
d14ed18c | 1157 | uint64_t progress_base; |
eb769f74 | 1158 | bool image_opts = false; |
d14ed18c | 1159 | |
40055951 | 1160 | cache = BDRV_DEFAULT_CACHE; |
d14ed18c | 1161 | for (;;) { |
3babeb15 DB |
1162 | static const struct option long_options[] = { |
1163 | {"help", no_argument, 0, 'h'}, | |
1164 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 1165 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
1166 | {0, 0, 0, 0} |
1167 | }; | |
1168 | c = getopt_long(argc, argv, "hf:F:T:pqs", | |
1169 | long_options, NULL); | |
d14ed18c MR |
1170 | if (c == -1) { |
1171 | break; | |
1172 | } | |
1173 | switch (c) { | |
1174 | case '?': | |
1175 | case 'h': | |
1176 | help(); | |
1177 | break; | |
1178 | case 'f': | |
1179 | fmt1 = optarg; | |
1180 | break; | |
1181 | case 'F': | |
1182 | fmt2 = optarg; | |
1183 | break; | |
40055951 HR |
1184 | case 'T': |
1185 | cache = optarg; | |
1186 | break; | |
d14ed18c MR |
1187 | case 'p': |
1188 | progress = true; | |
1189 | break; | |
1190 | case 'q': | |
1191 | quiet = true; | |
1192 | break; | |
1193 | case 's': | |
1194 | strict = true; | |
1195 | break; | |
3babeb15 DB |
1196 | case OPTION_OBJECT: { |
1197 | QemuOpts *opts; | |
1198 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
1199 | optarg, true); | |
1200 | if (!opts) { | |
1201 | ret = 2; | |
1202 | goto out4; | |
1203 | } | |
1204 | } break; | |
eb769f74 DB |
1205 | case OPTION_IMAGE_OPTS: |
1206 | image_opts = true; | |
1207 | break; | |
d14ed18c MR |
1208 | } |
1209 | } | |
1210 | ||
1211 | /* Progress is not shown in Quiet mode */ | |
1212 | if (quiet) { | |
1213 | progress = false; | |
1214 | } | |
1215 | ||
1216 | ||
fc11eb26 | 1217 | if (optind != argc - 2) { |
ac1307ab | 1218 | error_exit("Expecting two image file names"); |
d14ed18c MR |
1219 | } |
1220 | filename1 = argv[optind++]; | |
1221 | filename2 = argv[optind++]; | |
1222 | ||
3babeb15 DB |
1223 | if (qemu_opts_foreach(&qemu_object_opts, |
1224 | user_creatable_add_opts_foreach, | |
51b9b478 | 1225 | NULL, NULL)) { |
3babeb15 DB |
1226 | ret = 2; |
1227 | goto out4; | |
1228 | } | |
1229 | ||
cbda016d SH |
1230 | /* Initialize before goto out */ |
1231 | qemu_progress_init(progress, 2.0); | |
1232 | ||
ce099547 KW |
1233 | flags = 0; |
1234 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); | |
40055951 HR |
1235 | if (ret < 0) { |
1236 | error_report("Invalid source cache option: %s", cache); | |
1237 | ret = 2; | |
1238 | goto out3; | |
1239 | } | |
1240 | ||
ce099547 | 1241 | blk1 = img_open(image_opts, filename1, fmt1, flags, writethrough, quiet); |
7e7d56d9 | 1242 | if (!blk1) { |
d14ed18c | 1243 | ret = 2; |
7e7d56d9 | 1244 | goto out3; |
d14ed18c MR |
1245 | } |
1246 | ||
ce099547 | 1247 | blk2 = img_open(image_opts, filename2, fmt2, flags, writethrough, quiet); |
7e7d56d9 | 1248 | if (!blk2) { |
d14ed18c | 1249 | ret = 2; |
7e7d56d9 | 1250 | goto out2; |
d14ed18c | 1251 | } |
eb769f74 | 1252 | bs1 = blk_bs(blk1); |
7e7d56d9 | 1253 | bs2 = blk_bs(blk2); |
d14ed18c | 1254 | |
f1d3cd79 HR |
1255 | buf1 = blk_blockalign(blk1, IO_BUF_SIZE); |
1256 | buf2 = blk_blockalign(blk2, IO_BUF_SIZE); | |
1257 | total_sectors1 = blk_nb_sectors(blk1); | |
52bf1e72 MA |
1258 | if (total_sectors1 < 0) { |
1259 | error_report("Can't get size of %s: %s", | |
1260 | filename1, strerror(-total_sectors1)); | |
1261 | ret = 4; | |
1262 | goto out; | |
1263 | } | |
f1d3cd79 | 1264 | total_sectors2 = blk_nb_sectors(blk2); |
52bf1e72 MA |
1265 | if (total_sectors2 < 0) { |
1266 | error_report("Can't get size of %s: %s", | |
1267 | filename2, strerror(-total_sectors2)); | |
1268 | ret = 4; | |
1269 | goto out; | |
1270 | } | |
d14ed18c MR |
1271 | total_sectors = MIN(total_sectors1, total_sectors2); |
1272 | progress_base = MAX(total_sectors1, total_sectors2); | |
1273 | ||
1274 | qemu_progress_print(0, 100); | |
1275 | ||
1276 | if (strict && total_sectors1 != total_sectors2) { | |
1277 | ret = 1; | |
1278 | qprintf(quiet, "Strict mode: Image size mismatch!\n"); | |
1279 | goto out; | |
1280 | } | |
1281 | ||
1282 | for (;;) { | |
25ad8e6e | 1283 | int64_t status1, status2; |
67a0fd2a FZ |
1284 | BlockDriverState *file; |
1285 | ||
d14ed18c MR |
1286 | nb_sectors = sectors_to_process(total_sectors, sector_num); |
1287 | if (nb_sectors <= 0) { | |
1288 | break; | |
1289 | } | |
25ad8e6e FZ |
1290 | status1 = bdrv_get_block_status_above(bs1, NULL, sector_num, |
1291 | total_sectors1 - sector_num, | |
67a0fd2a | 1292 | &pnum1, &file); |
25ad8e6e | 1293 | if (status1 < 0) { |
d14ed18c MR |
1294 | ret = 3; |
1295 | error_report("Sector allocation test failed for %s", filename1); | |
1296 | goto out; | |
1297 | } | |
25ad8e6e | 1298 | allocated1 = status1 & BDRV_BLOCK_ALLOCATED; |
d14ed18c | 1299 | |
25ad8e6e FZ |
1300 | status2 = bdrv_get_block_status_above(bs2, NULL, sector_num, |
1301 | total_sectors2 - sector_num, | |
67a0fd2a | 1302 | &pnum2, &file); |
25ad8e6e | 1303 | if (status2 < 0) { |
d14ed18c MR |
1304 | ret = 3; |
1305 | error_report("Sector allocation test failed for %s", filename2); | |
1306 | goto out; | |
1307 | } | |
25ad8e6e FZ |
1308 | allocated2 = status2 & BDRV_BLOCK_ALLOCATED; |
1309 | if (pnum1) { | |
1310 | nb_sectors = MIN(nb_sectors, pnum1); | |
1311 | } | |
1312 | if (pnum2) { | |
1313 | nb_sectors = MIN(nb_sectors, pnum2); | |
1314 | } | |
d14ed18c | 1315 | |
25ad8e6e FZ |
1316 | if (strict) { |
1317 | if ((status1 & ~BDRV_BLOCK_OFFSET_MASK) != | |
1318 | (status2 & ~BDRV_BLOCK_OFFSET_MASK)) { | |
1319 | ret = 1; | |
1320 | qprintf(quiet, "Strict mode: Offset %" PRId64 | |
1321 | " block status mismatch!\n", | |
1322 | sectors_to_bytes(sector_num)); | |
1323 | goto out; | |
1324 | } | |
1325 | } | |
1326 | if ((status1 & BDRV_BLOCK_ZERO) && (status2 & BDRV_BLOCK_ZERO)) { | |
1327 | nb_sectors = MIN(pnum1, pnum2); | |
1328 | } else if (allocated1 == allocated2) { | |
d14ed18c | 1329 | if (allocated1) { |
9166920a EB |
1330 | ret = blk_pread(blk1, sector_num << BDRV_SECTOR_BITS, buf1, |
1331 | nb_sectors << BDRV_SECTOR_BITS); | |
d14ed18c MR |
1332 | if (ret < 0) { |
1333 | error_report("Error while reading offset %" PRId64 " of %s:" | |
1334 | " %s", sectors_to_bytes(sector_num), filename1, | |
1335 | strerror(-ret)); | |
1336 | ret = 4; | |
1337 | goto out; | |
1338 | } | |
9166920a EB |
1339 | ret = blk_pread(blk2, sector_num << BDRV_SECTOR_BITS, buf2, |
1340 | nb_sectors << BDRV_SECTOR_BITS); | |
d14ed18c MR |
1341 | if (ret < 0) { |
1342 | error_report("Error while reading offset %" PRId64 | |
1343 | " of %s: %s", sectors_to_bytes(sector_num), | |
1344 | filename2, strerror(-ret)); | |
1345 | ret = 4; | |
1346 | goto out; | |
1347 | } | |
1348 | ret = compare_sectors(buf1, buf2, nb_sectors, &pnum); | |
1349 | if (ret || pnum != nb_sectors) { | |
d14ed18c MR |
1350 | qprintf(quiet, "Content mismatch at offset %" PRId64 "!\n", |
1351 | sectors_to_bytes( | |
1352 | ret ? sector_num : sector_num + pnum)); | |
36452f12 | 1353 | ret = 1; |
d14ed18c MR |
1354 | goto out; |
1355 | } | |
1356 | } | |
1357 | } else { | |
d14ed18c MR |
1358 | |
1359 | if (allocated1) { | |
f1d3cd79 | 1360 | ret = check_empty_sectors(blk1, sector_num, nb_sectors, |
d14ed18c MR |
1361 | filename1, buf1, quiet); |
1362 | } else { | |
f1d3cd79 | 1363 | ret = check_empty_sectors(blk2, sector_num, nb_sectors, |
d14ed18c MR |
1364 | filename2, buf1, quiet); |
1365 | } | |
1366 | if (ret) { | |
1367 | if (ret < 0) { | |
d14ed18c MR |
1368 | error_report("Error while reading offset %" PRId64 ": %s", |
1369 | sectors_to_bytes(sector_num), strerror(-ret)); | |
36452f12 | 1370 | ret = 4; |
d14ed18c MR |
1371 | } |
1372 | goto out; | |
1373 | } | |
1374 | } | |
1375 | sector_num += nb_sectors; | |
1376 | qemu_progress_print(((float) nb_sectors / progress_base)*100, 100); | |
1377 | } | |
1378 | ||
1379 | if (total_sectors1 != total_sectors2) { | |
f1d3cd79 | 1380 | BlockBackend *blk_over; |
d14ed18c MR |
1381 | int64_t total_sectors_over; |
1382 | const char *filename_over; | |
1383 | ||
1384 | qprintf(quiet, "Warning: Image size mismatch!\n"); | |
1385 | if (total_sectors1 > total_sectors2) { | |
1386 | total_sectors_over = total_sectors1; | |
f1d3cd79 | 1387 | blk_over = blk1; |
d14ed18c MR |
1388 | filename_over = filename1; |
1389 | } else { | |
1390 | total_sectors_over = total_sectors2; | |
f1d3cd79 | 1391 | blk_over = blk2; |
d14ed18c MR |
1392 | filename_over = filename2; |
1393 | } | |
1394 | ||
1395 | for (;;) { | |
1396 | nb_sectors = sectors_to_process(total_sectors_over, sector_num); | |
1397 | if (nb_sectors <= 0) { | |
1398 | break; | |
1399 | } | |
f1d3cd79 | 1400 | ret = bdrv_is_allocated_above(blk_bs(blk_over), NULL, sector_num, |
d14ed18c MR |
1401 | nb_sectors, &pnum); |
1402 | if (ret < 0) { | |
1403 | ret = 3; | |
1404 | error_report("Sector allocation test failed for %s", | |
1405 | filename_over); | |
1406 | goto out; | |
1407 | ||
1408 | } | |
1409 | nb_sectors = pnum; | |
1410 | if (ret) { | |
f1d3cd79 | 1411 | ret = check_empty_sectors(blk_over, sector_num, nb_sectors, |
d14ed18c MR |
1412 | filename_over, buf1, quiet); |
1413 | if (ret) { | |
1414 | if (ret < 0) { | |
d14ed18c MR |
1415 | error_report("Error while reading offset %" PRId64 |
1416 | " of %s: %s", sectors_to_bytes(sector_num), | |
1417 | filename_over, strerror(-ret)); | |
36452f12 | 1418 | ret = 4; |
d14ed18c MR |
1419 | } |
1420 | goto out; | |
1421 | } | |
1422 | } | |
1423 | sector_num += nb_sectors; | |
1424 | qemu_progress_print(((float) nb_sectors / progress_base)*100, 100); | |
1425 | } | |
1426 | } | |
1427 | ||
1428 | qprintf(quiet, "Images are identical.\n"); | |
1429 | ret = 0; | |
1430 | ||
1431 | out: | |
d14ed18c MR |
1432 | qemu_vfree(buf1); |
1433 | qemu_vfree(buf2); | |
26f54e9a | 1434 | blk_unref(blk2); |
d14ed18c | 1435 | out2: |
26f54e9a | 1436 | blk_unref(blk1); |
d14ed18c MR |
1437 | out3: |
1438 | qemu_progress_end(); | |
3babeb15 | 1439 | out4: |
d14ed18c MR |
1440 | return ret; |
1441 | } | |
1442 | ||
690c7301 KW |
1443 | enum ImgConvertBlockStatus { |
1444 | BLK_DATA, | |
1445 | BLK_ZERO, | |
1446 | BLK_BACKING_FILE, | |
1447 | }; | |
1448 | ||
1449 | typedef struct ImgConvertState { | |
1450 | BlockBackend **src; | |
1451 | int64_t *src_sectors; | |
1452 | int src_cur, src_num; | |
1453 | int64_t src_cur_offset; | |
1454 | int64_t total_sectors; | |
1455 | int64_t allocated_sectors; | |
1456 | enum ImgConvertBlockStatus status; | |
1457 | int64_t sector_next_status; | |
1458 | BlockBackend *target; | |
1459 | bool has_zero_init; | |
1460 | bool compressed; | |
1461 | bool target_has_backing; | |
1462 | int min_sparse; | |
1463 | size_t cluster_sectors; | |
1464 | size_t buf_sectors; | |
1465 | } ImgConvertState; | |
1466 | ||
1467 | static void convert_select_part(ImgConvertState *s, int64_t sector_num) | |
1468 | { | |
1469 | assert(sector_num >= s->src_cur_offset); | |
1470 | while (sector_num - s->src_cur_offset >= s->src_sectors[s->src_cur]) { | |
1471 | s->src_cur_offset += s->src_sectors[s->src_cur]; | |
1472 | s->src_cur++; | |
1473 | assert(s->src_cur < s->src_num); | |
1474 | } | |
1475 | } | |
1476 | ||
1477 | static int convert_iteration_sectors(ImgConvertState *s, int64_t sector_num) | |
1478 | { | |
1479 | int64_t ret; | |
1480 | int n; | |
1481 | ||
1482 | convert_select_part(s, sector_num); | |
1483 | ||
1484 | assert(s->total_sectors > sector_num); | |
1485 | n = MIN(s->total_sectors - sector_num, BDRV_REQUEST_MAX_SECTORS); | |
1486 | ||
1487 | if (s->sector_next_status <= sector_num) { | |
67a0fd2a | 1488 | BlockDriverState *file; |
690c7301 KW |
1489 | ret = bdrv_get_block_status(blk_bs(s->src[s->src_cur]), |
1490 | sector_num - s->src_cur_offset, | |
67a0fd2a | 1491 | n, &n, &file); |
690c7301 KW |
1492 | if (ret < 0) { |
1493 | return ret; | |
1494 | } | |
1495 | ||
1496 | if (ret & BDRV_BLOCK_ZERO) { | |
1497 | s->status = BLK_ZERO; | |
1498 | } else if (ret & BDRV_BLOCK_DATA) { | |
1499 | s->status = BLK_DATA; | |
1500 | } else if (!s->target_has_backing) { | |
1501 | /* Without a target backing file we must copy over the contents of | |
1502 | * the backing file as well. */ | |
263a6f4c | 1503 | /* Check block status of the backing file chain to avoid |
690c7301 KW |
1504 | * needlessly reading zeroes and limiting the iteration to the |
1505 | * buffer size */ | |
263a6f4c RK |
1506 | ret = bdrv_get_block_status_above(blk_bs(s->src[s->src_cur]), NULL, |
1507 | sector_num - s->src_cur_offset, | |
1508 | n, &n, &file); | |
1509 | if (ret < 0) { | |
1510 | return ret; | |
1511 | } | |
1512 | ||
1513 | if (ret & BDRV_BLOCK_ZERO) { | |
1514 | s->status = BLK_ZERO; | |
1515 | } else { | |
1516 | s->status = BLK_DATA; | |
1517 | } | |
690c7301 KW |
1518 | } else { |
1519 | s->status = BLK_BACKING_FILE; | |
1520 | } | |
1521 | ||
1522 | s->sector_next_status = sector_num + n; | |
1523 | } | |
1524 | ||
1525 | n = MIN(n, s->sector_next_status - sector_num); | |
1526 | if (s->status == BLK_DATA) { | |
1527 | n = MIN(n, s->buf_sectors); | |
1528 | } | |
1529 | ||
1530 | /* We need to write complete clusters for compressed images, so if an | |
1531 | * unallocated area is shorter than that, we must consider the whole | |
1532 | * cluster allocated. */ | |
1533 | if (s->compressed) { | |
1534 | if (n < s->cluster_sectors) { | |
1535 | n = MIN(s->cluster_sectors, s->total_sectors - sector_num); | |
1536 | s->status = BLK_DATA; | |
1537 | } else { | |
1538 | n = QEMU_ALIGN_DOWN(n, s->cluster_sectors); | |
1539 | } | |
1540 | } | |
1541 | ||
1542 | return n; | |
1543 | } | |
1544 | ||
1545 | static int convert_read(ImgConvertState *s, int64_t sector_num, int nb_sectors, | |
1546 | uint8_t *buf) | |
1547 | { | |
1548 | int n; | |
1549 | int ret; | |
1550 | ||
690c7301 KW |
1551 | assert(nb_sectors <= s->buf_sectors); |
1552 | while (nb_sectors > 0) { | |
1553 | BlockBackend *blk; | |
1554 | int64_t bs_sectors; | |
1555 | ||
1556 | /* In the case of compression with multiple source files, we can get a | |
1557 | * nb_sectors that spreads into the next part. So we must be able to | |
1558 | * read across multiple BDSes for one convert_read() call. */ | |
1559 | convert_select_part(s, sector_num); | |
1560 | blk = s->src[s->src_cur]; | |
1561 | bs_sectors = s->src_sectors[s->src_cur]; | |
1562 | ||
1563 | n = MIN(nb_sectors, bs_sectors - (sector_num - s->src_cur_offset)); | |
9166920a EB |
1564 | ret = blk_pread(blk, |
1565 | (sector_num - s->src_cur_offset) << BDRV_SECTOR_BITS, | |
1566 | buf, n << BDRV_SECTOR_BITS); | |
690c7301 KW |
1567 | if (ret < 0) { |
1568 | return ret; | |
1569 | } | |
1570 | ||
1571 | sector_num += n; | |
1572 | nb_sectors -= n; | |
1573 | buf += n * BDRV_SECTOR_SIZE; | |
1574 | } | |
1575 | ||
1576 | return 0; | |
1577 | } | |
1578 | ||
1579 | static int convert_write(ImgConvertState *s, int64_t sector_num, int nb_sectors, | |
1580 | const uint8_t *buf) | |
1581 | { | |
1582 | int ret; | |
1583 | ||
1584 | while (nb_sectors > 0) { | |
1585 | int n = nb_sectors; | |
1586 | ||
1587 | switch (s->status) { | |
1588 | case BLK_BACKING_FILE: | |
1589 | /* If we have a backing file, leave clusters unallocated that are | |
1590 | * unallocated in the source image, so that the backing file is | |
1591 | * visible at the respective offset. */ | |
1592 | assert(s->target_has_backing); | |
1593 | break; | |
1594 | ||
1595 | case BLK_DATA: | |
1596 | /* We must always write compressed clusters as a whole, so don't | |
1597 | * try to find zeroed parts in the buffer. We can only save the | |
1598 | * write if the buffer is completely zeroed and we're allowed to | |
1599 | * keep the target sparse. */ | |
1600 | if (s->compressed) { | |
1601 | if (s->has_zero_init && s->min_sparse && | |
1602 | buffer_is_zero(buf, n * BDRV_SECTOR_SIZE)) | |
1603 | { | |
1604 | assert(!s->target_has_backing); | |
1605 | break; | |
1606 | } | |
1607 | ||
fe5c1355 PB |
1608 | ret = blk_pwrite_compressed(s->target, |
1609 | sector_num << BDRV_SECTOR_BITS, | |
1610 | buf, n << BDRV_SECTOR_BITS); | |
690c7301 KW |
1611 | if (ret < 0) { |
1612 | return ret; | |
1613 | } | |
1614 | break; | |
1615 | } | |
1616 | ||
1617 | /* If there is real non-zero data or we're told to keep the target | |
1618 | * fully allocated (-S 0), we must write it. Otherwise we can treat | |
1619 | * it as zero sectors. */ | |
1620 | if (!s->min_sparse || | |
1621 | is_allocated_sectors_min(buf, n, &n, s->min_sparse)) | |
1622 | { | |
9166920a EB |
1623 | ret = blk_pwrite(s->target, sector_num << BDRV_SECTOR_BITS, |
1624 | buf, n << BDRV_SECTOR_BITS, 0); | |
690c7301 KW |
1625 | if (ret < 0) { |
1626 | return ret; | |
1627 | } | |
1628 | break; | |
1629 | } | |
1630 | /* fall-through */ | |
1631 | ||
1632 | case BLK_ZERO: | |
1633 | if (s->has_zero_init) { | |
1634 | break; | |
1635 | } | |
d004bd52 EB |
1636 | ret = blk_pwrite_zeroes(s->target, sector_num << BDRV_SECTOR_BITS, |
1637 | n << BDRV_SECTOR_BITS, 0); | |
690c7301 KW |
1638 | if (ret < 0) { |
1639 | return ret; | |
1640 | } | |
1641 | break; | |
1642 | } | |
1643 | ||
1644 | sector_num += n; | |
1645 | nb_sectors -= n; | |
1646 | buf += n * BDRV_SECTOR_SIZE; | |
1647 | } | |
1648 | ||
1649 | return 0; | |
1650 | } | |
1651 | ||
1652 | static int convert_do_copy(ImgConvertState *s) | |
1653 | { | |
1654 | uint8_t *buf = NULL; | |
1655 | int64_t sector_num, allocated_done; | |
1656 | int ret; | |
1657 | int n; | |
1658 | ||
1659 | /* Check whether we have zero initialisation or can get it efficiently */ | |
1660 | s->has_zero_init = s->min_sparse && !s->target_has_backing | |
1661 | ? bdrv_has_zero_init(blk_bs(s->target)) | |
1662 | : false; | |
1663 | ||
1664 | if (!s->has_zero_init && !s->target_has_backing && | |
1665 | bdrv_can_write_zeroes_with_unmap(blk_bs(s->target))) | |
1666 | { | |
720ff280 | 1667 | ret = blk_make_zero(s->target, BDRV_REQ_MAY_UNMAP); |
690c7301 KW |
1668 | if (ret == 0) { |
1669 | s->has_zero_init = true; | |
1670 | } | |
1671 | } | |
1672 | ||
1673 | /* Allocate buffer for copied data. For compressed images, only one cluster | |
1674 | * can be copied at a time. */ | |
1675 | if (s->compressed) { | |
1676 | if (s->cluster_sectors <= 0 || s->cluster_sectors > s->buf_sectors) { | |
1677 | error_report("invalid cluster size"); | |
1678 | ret = -EINVAL; | |
1679 | goto fail; | |
1680 | } | |
1681 | s->buf_sectors = s->cluster_sectors; | |
1682 | } | |
1683 | buf = blk_blockalign(s->target, s->buf_sectors * BDRV_SECTOR_SIZE); | |
1684 | ||
1685 | /* Calculate allocated sectors for progress */ | |
1686 | s->allocated_sectors = 0; | |
1687 | sector_num = 0; | |
1688 | while (sector_num < s->total_sectors) { | |
1689 | n = convert_iteration_sectors(s, sector_num); | |
1690 | if (n < 0) { | |
1691 | ret = n; | |
1692 | goto fail; | |
1693 | } | |
aad15de4 HR |
1694 | if (s->status == BLK_DATA || (!s->min_sparse && s->status == BLK_ZERO)) |
1695 | { | |
690c7301 KW |
1696 | s->allocated_sectors += n; |
1697 | } | |
1698 | sector_num += n; | |
1699 | } | |
1700 | ||
1701 | /* Do the copy */ | |
1702 | s->src_cur = 0; | |
1703 | s->src_cur_offset = 0; | |
1704 | s->sector_next_status = 0; | |
1705 | ||
1706 | sector_num = 0; | |
1707 | allocated_done = 0; | |
1708 | ||
1709 | while (sector_num < s->total_sectors) { | |
1710 | n = convert_iteration_sectors(s, sector_num); | |
1711 | if (n < 0) { | |
1712 | ret = n; | |
1713 | goto fail; | |
1714 | } | |
aad15de4 HR |
1715 | if (s->status == BLK_DATA || (!s->min_sparse && s->status == BLK_ZERO)) |
1716 | { | |
690c7301 KW |
1717 | allocated_done += n; |
1718 | qemu_progress_print(100.0 * allocated_done / s->allocated_sectors, | |
1719 | 0); | |
1720 | } | |
1721 | ||
aad15de4 HR |
1722 | if (s->status == BLK_DATA) { |
1723 | ret = convert_read(s, sector_num, n, buf); | |
1724 | if (ret < 0) { | |
1725 | error_report("error while reading sector %" PRId64 | |
1726 | ": %s", sector_num, strerror(-ret)); | |
1727 | goto fail; | |
1728 | } | |
1729 | } else if (!s->min_sparse && s->status == BLK_ZERO) { | |
1730 | n = MIN(n, s->buf_sectors); | |
1731 | memset(buf, 0, n * BDRV_SECTOR_SIZE); | |
1732 | s->status = BLK_DATA; | |
690c7301 KW |
1733 | } |
1734 | ||
1735 | ret = convert_write(s, sector_num, n, buf); | |
1736 | if (ret < 0) { | |
1737 | error_report("error while writing sector %" PRId64 | |
1738 | ": %s", sector_num, strerror(-ret)); | |
1739 | goto fail; | |
1740 | } | |
1741 | ||
1742 | sector_num += n; | |
1743 | } | |
1744 | ||
1745 | if (s->compressed) { | |
1746 | /* signal EOF to align */ | |
fe5c1355 | 1747 | ret = blk_pwrite_compressed(s->target, 0, NULL, 0); |
690c7301 KW |
1748 | if (ret < 0) { |
1749 | goto fail; | |
1750 | } | |
1751 | } | |
1752 | ||
1753 | ret = 0; | |
1754 | fail: | |
1755 | qemu_vfree(buf); | |
1756 | return ret; | |
1757 | } | |
1758 | ||
ea2384d3 FB |
1759 | static int img_convert(int argc, char **argv) |
1760 | { | |
690c7301 | 1761 | int c, bs_n, bs_i, compress, cluster_sectors, skip_create; |
13c28af8 | 1762 | int64_t ret = 0; |
40055951 | 1763 | int progress = 0, flags, src_flags; |
ce099547 | 1764 | bool writethrough, src_writethrough; |
40055951 | 1765 | const char *fmt, *out_fmt, *cache, *src_cache, *out_baseimg, *out_filename; |
b50cbabc | 1766 | BlockDriver *drv, *proto_drv; |
26f54e9a | 1767 | BlockBackend **blk = NULL, *out_blk = NULL; |
c2abccec | 1768 | BlockDriverState **bs = NULL, *out_bs = NULL; |
690c7301 | 1769 | int64_t total_sectors; |
52bf1e72 | 1770 | int64_t *bs_sectors = NULL; |
f2521c90 | 1771 | size_t bufsectors = IO_BUF_SIZE / BDRV_SECTOR_SIZE; |
faea38e7 | 1772 | BlockDriverInfo bdi; |
83d0521a CL |
1773 | QemuOpts *opts = NULL; |
1774 | QemuOptsList *create_opts = NULL; | |
1775 | const char *out_baseimg_param; | |
efa84d43 | 1776 | char *options = NULL; |
51ef6727 | 1777 | const char *snapshot_name = NULL; |
a22f123c | 1778 | int min_sparse = 8; /* Need at least 4k of zeros for sparse detection */ |
f382d43a | 1779 | bool quiet = false; |
cc84d90f | 1780 | Error *local_err = NULL; |
ef80654d | 1781 | QemuOpts *sn_opts = NULL; |
690c7301 | 1782 | ImgConvertState state; |
eb769f74 | 1783 | bool image_opts = false; |
ea2384d3 FB |
1784 | |
1785 | fmt = NULL; | |
1786 | out_fmt = "raw"; | |
661a0f71 | 1787 | cache = "unsafe"; |
40055951 | 1788 | src_cache = BDRV_DEFAULT_CACHE; |
f58c7b35 | 1789 | out_baseimg = NULL; |
eec77d9e | 1790 | compress = 0; |
b2e10493 | 1791 | skip_create = 0; |
ea2384d3 | 1792 | for(;;) { |
3babeb15 DB |
1793 | static const struct option long_options[] = { |
1794 | {"help", no_argument, 0, 'h'}, | |
1795 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 1796 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
1797 | {0, 0, 0, 0} |
1798 | }; | |
1799 | c = getopt_long(argc, argv, "hf:O:B:ce6o:s:l:S:pt:T:qn", | |
1800 | long_options, NULL); | |
b8fb60da | 1801 | if (c == -1) { |
ea2384d3 | 1802 | break; |
b8fb60da | 1803 | } |
ea2384d3 | 1804 | switch(c) { |
ef87394c | 1805 | case '?': |
ea2384d3 FB |
1806 | case 'h': |
1807 | help(); | |
1808 | break; | |
1809 | case 'f': | |
1810 | fmt = optarg; | |
1811 | break; | |
1812 | case 'O': | |
1813 | out_fmt = optarg; | |
1814 | break; | |
f58c7b35 TS |
1815 | case 'B': |
1816 | out_baseimg = optarg; | |
1817 | break; | |
ea2384d3 | 1818 | case 'c': |
eec77d9e | 1819 | compress = 1; |
ea2384d3 FB |
1820 | break; |
1821 | case 'e': | |
9d42e15d | 1822 | error_report("option -e is deprecated, please use \'-o " |
eec77d9e | 1823 | "encryption\' instead!"); |
2dc8328b | 1824 | ret = -1; |
64bb01aa | 1825 | goto fail_getopt; |
ec36ba14 | 1826 | case '6': |
9d42e15d | 1827 | error_report("option -6 is deprecated, please use \'-o " |
eec77d9e | 1828 | "compat6\' instead!"); |
2dc8328b | 1829 | ret = -1; |
64bb01aa | 1830 | goto fail_getopt; |
efa84d43 | 1831 | case 'o': |
2dc8328b KW |
1832 | if (!is_valid_option_list(optarg)) { |
1833 | error_report("Invalid option list: %s", optarg); | |
1834 | ret = -1; | |
64bb01aa | 1835 | goto fail_getopt; |
2dc8328b KW |
1836 | } |
1837 | if (!options) { | |
1838 | options = g_strdup(optarg); | |
1839 | } else { | |
1840 | char *old_options = options; | |
1841 | options = g_strdup_printf("%s,%s", options, optarg); | |
1842 | g_free(old_options); | |
1843 | } | |
efa84d43 | 1844 | break; |
51ef6727 | 1845 | case 's': |
1846 | snapshot_name = optarg; | |
1847 | break; | |
ef80654d WX |
1848 | case 'l': |
1849 | if (strstart(optarg, SNAPSHOT_OPT_BASE, NULL)) { | |
70b94331 MA |
1850 | sn_opts = qemu_opts_parse_noisily(&internal_snapshot_opts, |
1851 | optarg, false); | |
ef80654d WX |
1852 | if (!sn_opts) { |
1853 | error_report("Failed in parsing snapshot param '%s'", | |
1854 | optarg); | |
2dc8328b | 1855 | ret = -1; |
64bb01aa | 1856 | goto fail_getopt; |
ef80654d WX |
1857 | } |
1858 | } else { | |
1859 | snapshot_name = optarg; | |
1860 | } | |
1861 | break; | |
a22f123c KW |
1862 | case 'S': |
1863 | { | |
1864 | int64_t sval; | |
e36b3695 | 1865 | char *end; |
4677bb40 | 1866 | sval = qemu_strtosz_suffix(optarg, &end, QEMU_STRTOSZ_DEFSUFFIX_B); |
e36b3695 | 1867 | if (sval < 0 || *end) { |
a22f123c | 1868 | error_report("Invalid minimum zero buffer size for sparse output specified"); |
2dc8328b | 1869 | ret = -1; |
64bb01aa | 1870 | goto fail_getopt; |
a22f123c KW |
1871 | } |
1872 | ||
1873 | min_sparse = sval / BDRV_SECTOR_SIZE; | |
1874 | break; | |
1875 | } | |
6b837bc4 JS |
1876 | case 'p': |
1877 | progress = 1; | |
1878 | break; | |
661a0f71 FS |
1879 | case 't': |
1880 | cache = optarg; | |
1881 | break; | |
40055951 HR |
1882 | case 'T': |
1883 | src_cache = optarg; | |
1884 | break; | |
f382d43a MR |
1885 | case 'q': |
1886 | quiet = true; | |
1887 | break; | |
b2e10493 AD |
1888 | case 'n': |
1889 | skip_create = 1; | |
1890 | break; | |
3babeb15 DB |
1891 | case OPTION_OBJECT: |
1892 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
1893 | optarg, true); | |
1894 | if (!opts) { | |
1895 | goto fail_getopt; | |
1896 | } | |
1897 | break; | |
eb769f74 DB |
1898 | case OPTION_IMAGE_OPTS: |
1899 | image_opts = true; | |
1900 | break; | |
ea2384d3 FB |
1901 | } |
1902 | } | |
3b46e624 | 1903 | |
3babeb15 DB |
1904 | if (qemu_opts_foreach(&qemu_object_opts, |
1905 | user_creatable_add_opts_foreach, | |
51b9b478 | 1906 | NULL, NULL)) { |
3babeb15 DB |
1907 | goto fail_getopt; |
1908 | } | |
1909 | ||
64bb01aa | 1910 | /* Initialize before goto out */ |
f382d43a MR |
1911 | if (quiet) { |
1912 | progress = 0; | |
1913 | } | |
64bb01aa KW |
1914 | qemu_progress_init(progress, 1.0); |
1915 | ||
926c2d23 | 1916 | bs_n = argc - optind - 1; |
a283cb6e | 1917 | out_filename = bs_n >= 1 ? argv[argc - 1] : NULL; |
f58c7b35 | 1918 | |
2dc8328b | 1919 | if (options && has_help_option(options)) { |
4ac8aacd JS |
1920 | ret = print_block_option_help(out_filename, out_fmt); |
1921 | goto out; | |
1922 | } | |
1923 | ||
a283cb6e | 1924 | if (bs_n < 1) { |
ac1307ab | 1925 | error_exit("Must specify image file name"); |
a283cb6e KW |
1926 | } |
1927 | ||
1928 | ||
c2abccec | 1929 | if (bs_n > 1 && out_baseimg) { |
15654a6d JS |
1930 | error_report("-B makes no sense when concatenating multiple input " |
1931 | "images"); | |
31ca34b8 JS |
1932 | ret = -1; |
1933 | goto out; | |
c2abccec | 1934 | } |
f8111c24 | 1935 | |
ce099547 KW |
1936 | src_flags = 0; |
1937 | ret = bdrv_parse_cache_mode(src_cache, &src_flags, &src_writethrough); | |
40055951 HR |
1938 | if (ret < 0) { |
1939 | error_report("Invalid source cache option: %s", src_cache); | |
1940 | goto out; | |
1941 | } | |
1942 | ||
6b837bc4 JS |
1943 | qemu_progress_print(0, 100); |
1944 | ||
26f54e9a | 1945 | blk = g_new0(BlockBackend *, bs_n); |
d739f1c4 | 1946 | bs = g_new0(BlockDriverState *, bs_n); |
52bf1e72 | 1947 | bs_sectors = g_new(int64_t, bs_n); |
926c2d23 AZ |
1948 | |
1949 | total_sectors = 0; | |
1950 | for (bs_i = 0; bs_i < bs_n; bs_i++) { | |
efaa7c4e | 1951 | blk[bs_i] = img_open(image_opts, argv[optind + bs_i], |
ce099547 | 1952 | fmt, src_flags, src_writethrough, quiet); |
7e7d56d9 | 1953 | if (!blk[bs_i]) { |
c2abccec MK |
1954 | ret = -1; |
1955 | goto out; | |
1956 | } | |
7e7d56d9 | 1957 | bs[bs_i] = blk_bs(blk[bs_i]); |
f1d3cd79 | 1958 | bs_sectors[bs_i] = blk_nb_sectors(blk[bs_i]); |
52bf1e72 MA |
1959 | if (bs_sectors[bs_i] < 0) { |
1960 | error_report("Could not get size of %s: %s", | |
1961 | argv[optind + bs_i], strerror(-bs_sectors[bs_i])); | |
1962 | ret = -1; | |
1963 | goto out; | |
1964 | } | |
d739f1c4 | 1965 | total_sectors += bs_sectors[bs_i]; |
926c2d23 | 1966 | } |
ea2384d3 | 1967 | |
ef80654d WX |
1968 | if (sn_opts) { |
1969 | ret = bdrv_snapshot_load_tmp(bs[0], | |
1970 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_ID), | |
1971 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_NAME), | |
1972 | &local_err); | |
1973 | } else if (snapshot_name != NULL) { | |
51ef6727 | 1974 | if (bs_n > 1) { |
6daf194d | 1975 | error_report("No support for concatenating multiple snapshot"); |
51ef6727 | 1976 | ret = -1; |
1977 | goto out; | |
1978 | } | |
7b4c4781 WX |
1979 | |
1980 | bdrv_snapshot_load_tmp_by_id_or_name(bs[0], snapshot_name, &local_err); | |
ef80654d | 1981 | } |
84d18f06 | 1982 | if (local_err) { |
c29b77f9 | 1983 | error_reportf_err(local_err, "Failed to load snapshot: "); |
ef80654d WX |
1984 | ret = -1; |
1985 | goto out; | |
51ef6727 | 1986 | } |
1987 | ||
efa84d43 | 1988 | /* Find driver and parse its options */ |
ea2384d3 | 1989 | drv = bdrv_find_format(out_fmt); |
c2abccec | 1990 | if (!drv) { |
15654a6d | 1991 | error_report("Unknown file format '%s'", out_fmt); |
c2abccec MK |
1992 | ret = -1; |
1993 | goto out; | |
1994 | } | |
efa84d43 | 1995 | |
b65a5e12 | 1996 | proto_drv = bdrv_find_protocol(out_filename, true, &local_err); |
c2abccec | 1997 | if (!proto_drv) { |
2867ce4a | 1998 | error_report_err(local_err); |
c2abccec MK |
1999 | ret = -1; |
2000 | goto out; | |
2001 | } | |
b50cbabc | 2002 | |
2e024cde HR |
2003 | if (!skip_create) { |
2004 | if (!drv->create_opts) { | |
2005 | error_report("Format driver '%s' does not support image creation", | |
2006 | drv->format_name); | |
2007 | ret = -1; | |
2008 | goto out; | |
2009 | } | |
f75613cf | 2010 | |
2e024cde HR |
2011 | if (!proto_drv->create_opts) { |
2012 | error_report("Protocol driver '%s' does not support image creation", | |
2013 | proto_drv->format_name); | |
2014 | ret = -1; | |
2015 | goto out; | |
2016 | } | |
f75613cf | 2017 | |
2e024cde HR |
2018 | create_opts = qemu_opts_append(create_opts, drv->create_opts); |
2019 | create_opts = qemu_opts_append(create_opts, proto_drv->create_opts); | |
db08adf5 | 2020 | |
2e024cde | 2021 | opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); |
dc523cd3 MA |
2022 | if (options) { |
2023 | qemu_opts_do_parse(opts, options, NULL, &local_err); | |
2024 | if (local_err) { | |
97a2ca7a | 2025 | error_report_err(local_err); |
dc523cd3 MA |
2026 | ret = -1; |
2027 | goto out; | |
2028 | } | |
2e024cde | 2029 | } |
efa84d43 | 2030 | |
39101f25 MA |
2031 | qemu_opt_set_number(opts, BLOCK_OPT_SIZE, total_sectors * 512, |
2032 | &error_abort); | |
2e024cde HR |
2033 | ret = add_old_style_options(out_fmt, opts, out_baseimg, NULL); |
2034 | if (ret < 0) { | |
2035 | goto out; | |
2036 | } | |
c2abccec | 2037 | } |
efa84d43 | 2038 | |
a18953fb | 2039 | /* Get backing file name if -o backing_file was used */ |
83d0521a | 2040 | out_baseimg_param = qemu_opt_get(opts, BLOCK_OPT_BACKING_FILE); |
a18953fb | 2041 | if (out_baseimg_param) { |
83d0521a | 2042 | out_baseimg = out_baseimg_param; |
a18953fb KW |
2043 | } |
2044 | ||
efa84d43 | 2045 | /* Check if compression is supported */ |
eec77d9e | 2046 | if (compress) { |
83d0521a CL |
2047 | bool encryption = |
2048 | qemu_opt_get_bool(opts, BLOCK_OPT_ENCRYPT, false); | |
2049 | const char *preallocation = | |
2050 | qemu_opt_get(opts, BLOCK_OPT_PREALLOC); | |
efa84d43 | 2051 | |
35fadca8 | 2052 | if (!drv->bdrv_co_pwritev_compressed) { |
15654a6d | 2053 | error_report("Compression not supported for this file format"); |
c2abccec MK |
2054 | ret = -1; |
2055 | goto out; | |
efa84d43 KW |
2056 | } |
2057 | ||
83d0521a | 2058 | if (encryption) { |
15654a6d JS |
2059 | error_report("Compression and encryption not supported at " |
2060 | "the same time"); | |
c2abccec MK |
2061 | ret = -1; |
2062 | goto out; | |
efa84d43 | 2063 | } |
41521fa4 | 2064 | |
83d0521a CL |
2065 | if (preallocation |
2066 | && strcmp(preallocation, "off")) | |
41521fa4 KW |
2067 | { |
2068 | error_report("Compression and preallocation not supported at " | |
2069 | "the same time"); | |
2070 | ret = -1; | |
2071 | goto out; | |
2072 | } | |
efa84d43 KW |
2073 | } |
2074 | ||
b2e10493 AD |
2075 | if (!skip_create) { |
2076 | /* Create the new image */ | |
c282e1fd | 2077 | ret = bdrv_create(drv, out_filename, opts, &local_err); |
b2e10493 | 2078 | if (ret < 0) { |
c29b77f9 MA |
2079 | error_reportf_err(local_err, "%s: error while converting %s: ", |
2080 | out_filename, out_fmt); | |
b2e10493 | 2081 | goto out; |
ea2384d3 FB |
2082 | } |
2083 | } | |
3b46e624 | 2084 | |
5a37b60a | 2085 | flags = min_sparse ? (BDRV_O_RDWR | BDRV_O_UNMAP) : BDRV_O_RDWR; |
ce099547 | 2086 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); |
661a0f71 FS |
2087 | if (ret < 0) { |
2088 | error_report("Invalid cache option: %s", cache); | |
bb9cd2ee | 2089 | goto out; |
661a0f71 FS |
2090 | } |
2091 | ||
eb769f74 DB |
2092 | /* XXX we should allow --image-opts to trigger use of |
2093 | * img_open() here, but then we have trouble with | |
2094 | * the bdrv_create() call which takes different params. | |
2095 | * Not critical right now, so fix can wait... | |
2096 | */ | |
ce099547 | 2097 | out_blk = img_open_file(out_filename, out_fmt, flags, writethrough, quiet); |
7e7d56d9 | 2098 | if (!out_blk) { |
c2abccec MK |
2099 | ret = -1; |
2100 | goto out; | |
2101 | } | |
7e7d56d9 | 2102 | out_bs = blk_bs(out_blk); |
ea2384d3 | 2103 | |
5def6b80 | 2104 | /* increase bufsectors from the default 4096 (2M) if opt_transfer |
f2521c90 PL |
2105 | * or discard_alignment of the out_bs is greater. Limit to 32768 (16MB) |
2106 | * as maximum. */ | |
2107 | bufsectors = MIN(32768, | |
5def6b80 EB |
2108 | MAX(bufsectors, |
2109 | MAX(out_bs->bl.opt_transfer >> BDRV_SECTOR_BITS, | |
b9f7855a EB |
2110 | out_bs->bl.pdiscard_alignment >> |
2111 | BDRV_SECTOR_BITS))); | |
f2521c90 | 2112 | |
b2e10493 | 2113 | if (skip_create) { |
f1d3cd79 | 2114 | int64_t output_sectors = blk_nb_sectors(out_blk); |
43716fa8 | 2115 | if (output_sectors < 0) { |
eec5eb42 | 2116 | error_report("unable to get output image length: %s", |
43716fa8 | 2117 | strerror(-output_sectors)); |
b2e10493 AD |
2118 | ret = -1; |
2119 | goto out; | |
43716fa8 | 2120 | } else if (output_sectors < total_sectors) { |
b2e10493 AD |
2121 | error_report("output file is smaller than input file"); |
2122 | ret = -1; | |
2123 | goto out; | |
2124 | } | |
2125 | } | |
2126 | ||
24f833cd PL |
2127 | cluster_sectors = 0; |
2128 | ret = bdrv_get_info(out_bs, &bdi); | |
2129 | if (ret < 0) { | |
2130 | if (compress) { | |
15654a6d | 2131 | error_report("could not get block driver info"); |
c2abccec MK |
2132 | goto out; |
2133 | } | |
24f833cd | 2134 | } else { |
85f49cad | 2135 | compress = compress || bdi.needs_compressed_writes; |
24f833cd PL |
2136 | cluster_sectors = bdi.cluster_size / BDRV_SECTOR_SIZE; |
2137 | } | |
2138 | ||
690c7301 KW |
2139 | state = (ImgConvertState) { |
2140 | .src = blk, | |
2141 | .src_sectors = bs_sectors, | |
2142 | .src_num = bs_n, | |
2143 | .total_sectors = total_sectors, | |
2144 | .target = out_blk, | |
2145 | .compressed = compress, | |
2146 | .target_has_backing = (bool) out_baseimg, | |
2147 | .min_sparse = min_sparse, | |
2148 | .cluster_sectors = cluster_sectors, | |
2149 | .buf_sectors = bufsectors, | |
2150 | }; | |
2151 | ret = convert_do_copy(&state); | |
802c3d4c | 2152 | |
c2abccec | 2153 | out: |
13c28af8 PL |
2154 | if (!ret) { |
2155 | qemu_progress_print(100, 0); | |
2156 | } | |
6b837bc4 | 2157 | qemu_progress_end(); |
83d0521a CL |
2158 | qemu_opts_del(opts); |
2159 | qemu_opts_free(create_opts); | |
fbf28a43 | 2160 | qemu_opts_del(sn_opts); |
26f54e9a | 2161 | blk_unref(out_blk); |
9ba10c95 | 2162 | g_free(bs); |
26f54e9a MA |
2163 | if (blk) { |
2164 | for (bs_i = 0; bs_i < bs_n; bs_i++) { | |
2165 | blk_unref(blk[bs_i]); | |
2166 | } | |
2167 | g_free(blk); | |
2168 | } | |
d739f1c4 | 2169 | g_free(bs_sectors); |
64bb01aa KW |
2170 | fail_getopt: |
2171 | g_free(options); | |
2172 | ||
c2abccec MK |
2173 | if (ret) { |
2174 | return 1; | |
2175 | } | |
ea2384d3 FB |
2176 | return 0; |
2177 | } | |
2178 | ||
57d1a2b6 | 2179 | |
faea38e7 FB |
2180 | static void dump_snapshots(BlockDriverState *bs) |
2181 | { | |
2182 | QEMUSnapshotInfo *sn_tab, *sn; | |
2183 | int nb_sns, i; | |
faea38e7 FB |
2184 | |
2185 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
2186 | if (nb_sns <= 0) | |
2187 | return; | |
2188 | printf("Snapshot list:\n"); | |
5b917044 WX |
2189 | bdrv_snapshot_dump(fprintf, stdout, NULL); |
2190 | printf("\n"); | |
faea38e7 FB |
2191 | for(i = 0; i < nb_sns; i++) { |
2192 | sn = &sn_tab[i]; | |
5b917044 WX |
2193 | bdrv_snapshot_dump(fprintf, stdout, sn); |
2194 | printf("\n"); | |
faea38e7 | 2195 | } |
7267c094 | 2196 | g_free(sn_tab); |
faea38e7 FB |
2197 | } |
2198 | ||
9699bf0d SH |
2199 | static void dump_json_image_info_list(ImageInfoList *list) |
2200 | { | |
9699bf0d | 2201 | QString *str; |
9699bf0d | 2202 | QObject *obj; |
7d5e199a | 2203 | Visitor *v = qobject_output_visitor_new(&obj); |
3b098d56 EB |
2204 | |
2205 | visit_type_ImageInfoList(v, NULL, &list, &error_abort); | |
2206 | visit_complete(v, &obj); | |
9699bf0d SH |
2207 | str = qobject_to_json_pretty(obj); |
2208 | assert(str != NULL); | |
2209 | printf("%s\n", qstring_get_str(str)); | |
2210 | qobject_decref(obj); | |
3b098d56 | 2211 | visit_free(v); |
9699bf0d SH |
2212 | QDECREF(str); |
2213 | } | |
2214 | ||
c054b3fd BC |
2215 | static void dump_json_image_info(ImageInfo *info) |
2216 | { | |
c054b3fd | 2217 | QString *str; |
c054b3fd | 2218 | QObject *obj; |
7d5e199a | 2219 | Visitor *v = qobject_output_visitor_new(&obj); |
3b098d56 EB |
2220 | |
2221 | visit_type_ImageInfo(v, NULL, &info, &error_abort); | |
2222 | visit_complete(v, &obj); | |
c054b3fd BC |
2223 | str = qobject_to_json_pretty(obj); |
2224 | assert(str != NULL); | |
2225 | printf("%s\n", qstring_get_str(str)); | |
2226 | qobject_decref(obj); | |
3b098d56 | 2227 | visit_free(v); |
c054b3fd BC |
2228 | QDECREF(str); |
2229 | } | |
2230 | ||
9699bf0d SH |
2231 | static void dump_human_image_info_list(ImageInfoList *list) |
2232 | { | |
2233 | ImageInfoList *elem; | |
2234 | bool delim = false; | |
2235 | ||
2236 | for (elem = list; elem; elem = elem->next) { | |
2237 | if (delim) { | |
2238 | printf("\n"); | |
2239 | } | |
2240 | delim = true; | |
2241 | ||
5b917044 | 2242 | bdrv_image_info_dump(fprintf, stdout, elem->value); |
9699bf0d SH |
2243 | } |
2244 | } | |
2245 | ||
2246 | static gboolean str_equal_func(gconstpointer a, gconstpointer b) | |
2247 | { | |
2248 | return strcmp(a, b) == 0; | |
2249 | } | |
2250 | ||
2251 | /** | |
2252 | * Open an image file chain and return an ImageInfoList | |
2253 | * | |
2254 | * @filename: topmost image filename | |
2255 | * @fmt: topmost image format (may be NULL to autodetect) | |
2256 | * @chain: true - enumerate entire backing file chain | |
2257 | * false - only topmost image file | |
2258 | * | |
2259 | * Returns a list of ImageInfo objects or NULL if there was an error opening an | |
2260 | * image file. If there was an error a message will have been printed to | |
2261 | * stderr. | |
2262 | */ | |
eb769f74 DB |
2263 | static ImageInfoList *collect_image_info_list(bool image_opts, |
2264 | const char *filename, | |
9699bf0d SH |
2265 | const char *fmt, |
2266 | bool chain) | |
2267 | { | |
2268 | ImageInfoList *head = NULL; | |
2269 | ImageInfoList **last = &head; | |
2270 | GHashTable *filenames; | |
43526ec8 | 2271 | Error *err = NULL; |
9699bf0d SH |
2272 | |
2273 | filenames = g_hash_table_new_full(g_str_hash, str_equal_func, NULL, NULL); | |
2274 | ||
2275 | while (filename) { | |
26f54e9a | 2276 | BlockBackend *blk; |
9699bf0d SH |
2277 | BlockDriverState *bs; |
2278 | ImageInfo *info; | |
2279 | ImageInfoList *elem; | |
2280 | ||
2281 | if (g_hash_table_lookup_extended(filenames, filename, NULL, NULL)) { | |
2282 | error_report("Backing file '%s' creates an infinite loop.", | |
2283 | filename); | |
2284 | goto err; | |
2285 | } | |
2286 | g_hash_table_insert(filenames, (gpointer)filename, NULL); | |
2287 | ||
efaa7c4e | 2288 | blk = img_open(image_opts, filename, fmt, |
ce099547 | 2289 | BDRV_O_NO_BACKING | BDRV_O_NO_IO, false, false); |
7e7d56d9 | 2290 | if (!blk) { |
9699bf0d SH |
2291 | goto err; |
2292 | } | |
7e7d56d9 | 2293 | bs = blk_bs(blk); |
9699bf0d | 2294 | |
43526ec8 | 2295 | bdrv_query_image_info(bs, &info, &err); |
84d18f06 | 2296 | if (err) { |
565f65d2 | 2297 | error_report_err(err); |
26f54e9a | 2298 | blk_unref(blk); |
43526ec8 | 2299 | goto err; |
fb0ed453 | 2300 | } |
9699bf0d SH |
2301 | |
2302 | elem = g_new0(ImageInfoList, 1); | |
2303 | elem->value = info; | |
2304 | *last = elem; | |
2305 | last = &elem->next; | |
2306 | ||
26f54e9a | 2307 | blk_unref(blk); |
9699bf0d SH |
2308 | |
2309 | filename = fmt = NULL; | |
2310 | if (chain) { | |
2311 | if (info->has_full_backing_filename) { | |
2312 | filename = info->full_backing_filename; | |
2313 | } else if (info->has_backing_filename) { | |
92d617ab JS |
2314 | error_report("Could not determine absolute backing filename," |
2315 | " but backing filename '%s' present", | |
2316 | info->backing_filename); | |
2317 | goto err; | |
9699bf0d SH |
2318 | } |
2319 | if (info->has_backing_filename_format) { | |
2320 | fmt = info->backing_filename_format; | |
2321 | } | |
2322 | } | |
2323 | } | |
2324 | g_hash_table_destroy(filenames); | |
2325 | return head; | |
2326 | ||
2327 | err: | |
2328 | qapi_free_ImageInfoList(head); | |
2329 | g_hash_table_destroy(filenames); | |
2330 | return NULL; | |
2331 | } | |
2332 | ||
c054b3fd BC |
2333 | static int img_info(int argc, char **argv) |
2334 | { | |
2335 | int c; | |
2336 | OutputFormat output_format = OFORMAT_HUMAN; | |
9699bf0d | 2337 | bool chain = false; |
c054b3fd | 2338 | const char *filename, *fmt, *output; |
9699bf0d | 2339 | ImageInfoList *list; |
eb769f74 | 2340 | bool image_opts = false; |
c054b3fd | 2341 | |
ea2384d3 | 2342 | fmt = NULL; |
c054b3fd | 2343 | output = NULL; |
ea2384d3 | 2344 | for(;;) { |
c054b3fd BC |
2345 | int option_index = 0; |
2346 | static const struct option long_options[] = { | |
2347 | {"help", no_argument, 0, 'h'}, | |
2348 | {"format", required_argument, 0, 'f'}, | |
2349 | {"output", required_argument, 0, OPTION_OUTPUT}, | |
9699bf0d | 2350 | {"backing-chain", no_argument, 0, OPTION_BACKING_CHAIN}, |
3babeb15 | 2351 | {"object", required_argument, 0, OPTION_OBJECT}, |
eb769f74 | 2352 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
c054b3fd BC |
2353 | {0, 0, 0, 0} |
2354 | }; | |
2355 | c = getopt_long(argc, argv, "f:h", | |
2356 | long_options, &option_index); | |
b8fb60da | 2357 | if (c == -1) { |
ea2384d3 | 2358 | break; |
b8fb60da | 2359 | } |
ea2384d3 | 2360 | switch(c) { |
ef87394c | 2361 | case '?': |
ea2384d3 FB |
2362 | case 'h': |
2363 | help(); | |
2364 | break; | |
2365 | case 'f': | |
2366 | fmt = optarg; | |
2367 | break; | |
c054b3fd BC |
2368 | case OPTION_OUTPUT: |
2369 | output = optarg; | |
2370 | break; | |
9699bf0d SH |
2371 | case OPTION_BACKING_CHAIN: |
2372 | chain = true; | |
2373 | break; | |
3babeb15 DB |
2374 | case OPTION_OBJECT: { |
2375 | QemuOpts *opts; | |
2376 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
2377 | optarg, true); | |
2378 | if (!opts) { | |
2379 | return 1; | |
2380 | } | |
2381 | } break; | |
eb769f74 DB |
2382 | case OPTION_IMAGE_OPTS: |
2383 | image_opts = true; | |
2384 | break; | |
ea2384d3 FB |
2385 | } |
2386 | } | |
fc11eb26 | 2387 | if (optind != argc - 1) { |
ac1307ab | 2388 | error_exit("Expecting one image file name"); |
b8fb60da | 2389 | } |
ea2384d3 FB |
2390 | filename = argv[optind++]; |
2391 | ||
c054b3fd BC |
2392 | if (output && !strcmp(output, "json")) { |
2393 | output_format = OFORMAT_JSON; | |
2394 | } else if (output && !strcmp(output, "human")) { | |
2395 | output_format = OFORMAT_HUMAN; | |
2396 | } else if (output) { | |
2397 | error_report("--output must be used with human or json as argument."); | |
c2abccec MK |
2398 | return 1; |
2399 | } | |
c054b3fd | 2400 | |
3babeb15 DB |
2401 | if (qemu_opts_foreach(&qemu_object_opts, |
2402 | user_creatable_add_opts_foreach, | |
51b9b478 | 2403 | NULL, NULL)) { |
3babeb15 DB |
2404 | return 1; |
2405 | } | |
2406 | ||
eb769f74 | 2407 | list = collect_image_info_list(image_opts, filename, fmt, chain); |
9699bf0d | 2408 | if (!list) { |
c2abccec | 2409 | return 1; |
faea38e7 | 2410 | } |
c054b3fd | 2411 | |
c054b3fd BC |
2412 | switch (output_format) { |
2413 | case OFORMAT_HUMAN: | |
9699bf0d | 2414 | dump_human_image_info_list(list); |
c054b3fd BC |
2415 | break; |
2416 | case OFORMAT_JSON: | |
9699bf0d SH |
2417 | if (chain) { |
2418 | dump_json_image_info_list(list); | |
2419 | } else { | |
2420 | dump_json_image_info(list->value); | |
2421 | } | |
c054b3fd | 2422 | break; |
faea38e7 | 2423 | } |
c054b3fd | 2424 | |
9699bf0d | 2425 | qapi_free_ImageInfoList(list); |
ea2384d3 FB |
2426 | return 0; |
2427 | } | |
2428 | ||
4c93a13b PB |
2429 | static void dump_map_entry(OutputFormat output_format, MapEntry *e, |
2430 | MapEntry *next) | |
2431 | { | |
2432 | switch (output_format) { | |
2433 | case OFORMAT_HUMAN: | |
16b0d555 | 2434 | if (e->data && !e->has_offset) { |
4c93a13b PB |
2435 | error_report("File contains external, encrypted or compressed clusters."); |
2436 | exit(1); | |
2437 | } | |
16b0d555 | 2438 | if (e->data && !e->zero) { |
4c93a13b | 2439 | printf("%#-16"PRIx64"%#-16"PRIx64"%#-16"PRIx64"%s\n", |
16b0d555 FZ |
2440 | e->start, e->length, |
2441 | e->has_offset ? e->offset : 0, | |
2442 | e->has_filename ? e->filename : ""); | |
4c93a13b PB |
2443 | } |
2444 | /* This format ignores the distinction between 0, ZERO and ZERO|DATA. | |
2445 | * Modify the flags here to allow more coalescing. | |
2446 | */ | |
16b0d555 FZ |
2447 | if (next && (!next->data || next->zero)) { |
2448 | next->data = false; | |
2449 | next->zero = true; | |
4c93a13b PB |
2450 | } |
2451 | break; | |
2452 | case OFORMAT_JSON: | |
16b0d555 FZ |
2453 | printf("%s{ \"start\": %"PRId64", \"length\": %"PRId64"," |
2454 | " \"depth\": %"PRId64", \"zero\": %s, \"data\": %s", | |
4c93a13b PB |
2455 | (e->start == 0 ? "[" : ",\n"), |
2456 | e->start, e->length, e->depth, | |
16b0d555 FZ |
2457 | e->zero ? "true" : "false", |
2458 | e->data ? "true" : "false"); | |
2459 | if (e->has_offset) { | |
c745bfb4 | 2460 | printf(", \"offset\": %"PRId64"", e->offset); |
4c93a13b PB |
2461 | } |
2462 | putchar('}'); | |
2463 | ||
2464 | if (!next) { | |
2465 | printf("]\n"); | |
2466 | } | |
2467 | break; | |
2468 | } | |
2469 | } | |
2470 | ||
2471 | static int get_block_status(BlockDriverState *bs, int64_t sector_num, | |
2472 | int nb_sectors, MapEntry *e) | |
2473 | { | |
2474 | int64_t ret; | |
2475 | int depth; | |
67a0fd2a | 2476 | BlockDriverState *file; |
2875645b | 2477 | bool has_offset; |
4c93a13b PB |
2478 | |
2479 | /* As an optimization, we could cache the current range of unallocated | |
2480 | * clusters in each file of the chain, and avoid querying the same | |
2481 | * range repeatedly. | |
2482 | */ | |
2483 | ||
2484 | depth = 0; | |
2485 | for (;;) { | |
67a0fd2a FZ |
2486 | ret = bdrv_get_block_status(bs, sector_num, nb_sectors, &nb_sectors, |
2487 | &file); | |
4c93a13b PB |
2488 | if (ret < 0) { |
2489 | return ret; | |
2490 | } | |
2491 | assert(nb_sectors); | |
2492 | if (ret & (BDRV_BLOCK_ZERO|BDRV_BLOCK_DATA)) { | |
2493 | break; | |
2494 | } | |
760e0063 | 2495 | bs = backing_bs(bs); |
4c93a13b PB |
2496 | if (bs == NULL) { |
2497 | ret = 0; | |
2498 | break; | |
2499 | } | |
2500 | ||
2501 | depth++; | |
2502 | } | |
2503 | ||
2875645b JS |
2504 | has_offset = !!(ret & BDRV_BLOCK_OFFSET_VALID); |
2505 | ||
2506 | *e = (MapEntry) { | |
2507 | .start = sector_num * BDRV_SECTOR_SIZE, | |
2508 | .length = nb_sectors * BDRV_SECTOR_SIZE, | |
2509 | .data = !!(ret & BDRV_BLOCK_DATA), | |
2510 | .zero = !!(ret & BDRV_BLOCK_ZERO), | |
2511 | .offset = ret & BDRV_BLOCK_OFFSET_MASK, | |
2512 | .has_offset = has_offset, | |
2513 | .depth = depth, | |
2514 | .has_filename = file && has_offset, | |
2515 | .filename = file && has_offset ? file->filename : NULL, | |
2516 | }; | |
2517 | ||
4c93a13b PB |
2518 | return 0; |
2519 | } | |
2520 | ||
16b0d555 FZ |
2521 | static inline bool entry_mergeable(const MapEntry *curr, const MapEntry *next) |
2522 | { | |
2523 | if (curr->length == 0) { | |
2524 | return false; | |
2525 | } | |
2526 | if (curr->zero != next->zero || | |
2527 | curr->data != next->data || | |
2528 | curr->depth != next->depth || | |
2529 | curr->has_filename != next->has_filename || | |
2530 | curr->has_offset != next->has_offset) { | |
2531 | return false; | |
2532 | } | |
2533 | if (curr->has_filename && strcmp(curr->filename, next->filename)) { | |
2534 | return false; | |
2535 | } | |
2536 | if (curr->has_offset && curr->offset + curr->length != next->offset) { | |
2537 | return false; | |
2538 | } | |
2539 | return true; | |
2540 | } | |
2541 | ||
4c93a13b PB |
2542 | static int img_map(int argc, char **argv) |
2543 | { | |
2544 | int c; | |
2545 | OutputFormat output_format = OFORMAT_HUMAN; | |
26f54e9a | 2546 | BlockBackend *blk; |
4c93a13b PB |
2547 | BlockDriverState *bs; |
2548 | const char *filename, *fmt, *output; | |
2549 | int64_t length; | |
2550 | MapEntry curr = { .length = 0 }, next; | |
2551 | int ret = 0; | |
eb769f74 | 2552 | bool image_opts = false; |
4c93a13b PB |
2553 | |
2554 | fmt = NULL; | |
2555 | output = NULL; | |
2556 | for (;;) { | |
2557 | int option_index = 0; | |
2558 | static const struct option long_options[] = { | |
2559 | {"help", no_argument, 0, 'h'}, | |
2560 | {"format", required_argument, 0, 'f'}, | |
2561 | {"output", required_argument, 0, OPTION_OUTPUT}, | |
3babeb15 | 2562 | {"object", required_argument, 0, OPTION_OBJECT}, |
eb769f74 | 2563 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
4c93a13b PB |
2564 | {0, 0, 0, 0} |
2565 | }; | |
2566 | c = getopt_long(argc, argv, "f:h", | |
2567 | long_options, &option_index); | |
2568 | if (c == -1) { | |
2569 | break; | |
2570 | } | |
2571 | switch (c) { | |
2572 | case '?': | |
2573 | case 'h': | |
2574 | help(); | |
2575 | break; | |
2576 | case 'f': | |
2577 | fmt = optarg; | |
2578 | break; | |
2579 | case OPTION_OUTPUT: | |
2580 | output = optarg; | |
2581 | break; | |
3babeb15 DB |
2582 | case OPTION_OBJECT: { |
2583 | QemuOpts *opts; | |
2584 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
2585 | optarg, true); | |
2586 | if (!opts) { | |
2587 | return 1; | |
2588 | } | |
2589 | } break; | |
eb769f74 DB |
2590 | case OPTION_IMAGE_OPTS: |
2591 | image_opts = true; | |
2592 | break; | |
4c93a13b PB |
2593 | } |
2594 | } | |
ac1307ab FZ |
2595 | if (optind != argc - 1) { |
2596 | error_exit("Expecting one image file name"); | |
4c93a13b | 2597 | } |
ac1307ab | 2598 | filename = argv[optind]; |
4c93a13b PB |
2599 | |
2600 | if (output && !strcmp(output, "json")) { | |
2601 | output_format = OFORMAT_JSON; | |
2602 | } else if (output && !strcmp(output, "human")) { | |
2603 | output_format = OFORMAT_HUMAN; | |
2604 | } else if (output) { | |
2605 | error_report("--output must be used with human or json as argument."); | |
2606 | return 1; | |
2607 | } | |
2608 | ||
3babeb15 DB |
2609 | if (qemu_opts_foreach(&qemu_object_opts, |
2610 | user_creatable_add_opts_foreach, | |
51b9b478 | 2611 | NULL, NULL)) { |
3babeb15 DB |
2612 | return 1; |
2613 | } | |
2614 | ||
ce099547 | 2615 | blk = img_open(image_opts, filename, fmt, 0, false, false); |
7e7d56d9 MA |
2616 | if (!blk) { |
2617 | return 1; | |
4c93a13b | 2618 | } |
7e7d56d9 | 2619 | bs = blk_bs(blk); |
4c93a13b PB |
2620 | |
2621 | if (output_format == OFORMAT_HUMAN) { | |
2622 | printf("%-16s%-16s%-16s%s\n", "Offset", "Length", "Mapped to", "File"); | |
2623 | } | |
2624 | ||
f1d3cd79 | 2625 | length = blk_getlength(blk); |
4c93a13b PB |
2626 | while (curr.start + curr.length < length) { |
2627 | int64_t nsectors_left; | |
2628 | int64_t sector_num; | |
2629 | int n; | |
2630 | ||
2631 | sector_num = (curr.start + curr.length) >> BDRV_SECTOR_BITS; | |
2632 | ||
2633 | /* Probe up to 1 GiB at a time. */ | |
2634 | nsectors_left = DIV_ROUND_UP(length, BDRV_SECTOR_SIZE) - sector_num; | |
2635 | n = MIN(1 << (30 - BDRV_SECTOR_BITS), nsectors_left); | |
2636 | ret = get_block_status(bs, sector_num, n, &next); | |
2637 | ||
2638 | if (ret < 0) { | |
2639 | error_report("Could not read file metadata: %s", strerror(-ret)); | |
2640 | goto out; | |
2641 | } | |
2642 | ||
16b0d555 | 2643 | if (entry_mergeable(&curr, &next)) { |
4c93a13b PB |
2644 | curr.length += next.length; |
2645 | continue; | |
2646 | } | |
2647 | ||
2648 | if (curr.length > 0) { | |
2649 | dump_map_entry(output_format, &curr, &next); | |
2650 | } | |
2651 | curr = next; | |
2652 | } | |
2653 | ||
2654 | dump_map_entry(output_format, &curr, NULL); | |
2655 | ||
2656 | out: | |
26f54e9a | 2657 | blk_unref(blk); |
4c93a13b PB |
2658 | return ret < 0; |
2659 | } | |
2660 | ||
f7b4a940 AL |
2661 | #define SNAPSHOT_LIST 1 |
2662 | #define SNAPSHOT_CREATE 2 | |
2663 | #define SNAPSHOT_APPLY 3 | |
2664 | #define SNAPSHOT_DELETE 4 | |
2665 | ||
153859be | 2666 | static int img_snapshot(int argc, char **argv) |
f7b4a940 | 2667 | { |
26f54e9a | 2668 | BlockBackend *blk; |
f7b4a940 AL |
2669 | BlockDriverState *bs; |
2670 | QEMUSnapshotInfo sn; | |
2671 | char *filename, *snapshot_name = NULL; | |
c2abccec | 2672 | int c, ret = 0, bdrv_oflags; |
f7b4a940 AL |
2673 | int action = 0; |
2674 | qemu_timeval tv; | |
f382d43a | 2675 | bool quiet = false; |
a89d89d3 | 2676 | Error *err = NULL; |
eb769f74 | 2677 | bool image_opts = false; |
f7b4a940 | 2678 | |
ce099547 | 2679 | bdrv_oflags = BDRV_O_RDWR; |
f7b4a940 AL |
2680 | /* Parse commandline parameters */ |
2681 | for(;;) { | |
3babeb15 DB |
2682 | static const struct option long_options[] = { |
2683 | {"help", no_argument, 0, 'h'}, | |
2684 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 2685 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
2686 | {0, 0, 0, 0} |
2687 | }; | |
2688 | c = getopt_long(argc, argv, "la:c:d:hq", | |
2689 | long_options, NULL); | |
b8fb60da | 2690 | if (c == -1) { |
f7b4a940 | 2691 | break; |
b8fb60da | 2692 | } |
f7b4a940 | 2693 | switch(c) { |
ef87394c | 2694 | case '?': |
f7b4a940 AL |
2695 | case 'h': |
2696 | help(); | |
153859be | 2697 | return 0; |
f7b4a940 AL |
2698 | case 'l': |
2699 | if (action) { | |
ac1307ab | 2700 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2701 | return 0; |
f7b4a940 AL |
2702 | } |
2703 | action = SNAPSHOT_LIST; | |
f5edb014 | 2704 | bdrv_oflags &= ~BDRV_O_RDWR; /* no need for RW */ |
f7b4a940 AL |
2705 | break; |
2706 | case 'a': | |
2707 | if (action) { | |
ac1307ab | 2708 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2709 | return 0; |
f7b4a940 AL |
2710 | } |
2711 | action = SNAPSHOT_APPLY; | |
2712 | snapshot_name = optarg; | |
2713 | break; | |
2714 | case 'c': | |
2715 | if (action) { | |
ac1307ab | 2716 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2717 | return 0; |
f7b4a940 AL |
2718 | } |
2719 | action = SNAPSHOT_CREATE; | |
2720 | snapshot_name = optarg; | |
2721 | break; | |
2722 | case 'd': | |
2723 | if (action) { | |
ac1307ab | 2724 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2725 | return 0; |
f7b4a940 AL |
2726 | } |
2727 | action = SNAPSHOT_DELETE; | |
2728 | snapshot_name = optarg; | |
2729 | break; | |
f382d43a MR |
2730 | case 'q': |
2731 | quiet = true; | |
2732 | break; | |
3babeb15 DB |
2733 | case OPTION_OBJECT: { |
2734 | QemuOpts *opts; | |
2735 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
2736 | optarg, true); | |
2737 | if (!opts) { | |
2738 | return 1; | |
2739 | } | |
2740 | } break; | |
eb769f74 DB |
2741 | case OPTION_IMAGE_OPTS: |
2742 | image_opts = true; | |
2743 | break; | |
f7b4a940 AL |
2744 | } |
2745 | } | |
2746 | ||
fc11eb26 | 2747 | if (optind != argc - 1) { |
ac1307ab | 2748 | error_exit("Expecting one image file name"); |
b8fb60da | 2749 | } |
f7b4a940 AL |
2750 | filename = argv[optind++]; |
2751 | ||
3babeb15 DB |
2752 | if (qemu_opts_foreach(&qemu_object_opts, |
2753 | user_creatable_add_opts_foreach, | |
51b9b478 | 2754 | NULL, NULL)) { |
3babeb15 DB |
2755 | return 1; |
2756 | } | |
2757 | ||
f7b4a940 | 2758 | /* Open the image */ |
ce099547 | 2759 | blk = img_open(image_opts, filename, NULL, bdrv_oflags, false, quiet); |
7e7d56d9 MA |
2760 | if (!blk) { |
2761 | return 1; | |
c2abccec | 2762 | } |
7e7d56d9 | 2763 | bs = blk_bs(blk); |
f7b4a940 AL |
2764 | |
2765 | /* Perform the requested action */ | |
2766 | switch(action) { | |
2767 | case SNAPSHOT_LIST: | |
2768 | dump_snapshots(bs); | |
2769 | break; | |
2770 | ||
2771 | case SNAPSHOT_CREATE: | |
2772 | memset(&sn, 0, sizeof(sn)); | |
2773 | pstrcpy(sn.name, sizeof(sn.name), snapshot_name); | |
2774 | ||
2775 | qemu_gettimeofday(&tv); | |
2776 | sn.date_sec = tv.tv_sec; | |
2777 | sn.date_nsec = tv.tv_usec * 1000; | |
2778 | ||
2779 | ret = bdrv_snapshot_create(bs, &sn); | |
b8fb60da | 2780 | if (ret) { |
15654a6d | 2781 | error_report("Could not create snapshot '%s': %d (%s)", |
f7b4a940 | 2782 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 2783 | } |
f7b4a940 AL |
2784 | break; |
2785 | ||
2786 | case SNAPSHOT_APPLY: | |
2787 | ret = bdrv_snapshot_goto(bs, snapshot_name); | |
b8fb60da | 2788 | if (ret) { |
15654a6d | 2789 | error_report("Could not apply snapshot '%s': %d (%s)", |
f7b4a940 | 2790 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 2791 | } |
f7b4a940 AL |
2792 | break; |
2793 | ||
2794 | case SNAPSHOT_DELETE: | |
a89d89d3 | 2795 | bdrv_snapshot_delete_by_id_or_name(bs, snapshot_name, &err); |
84d18f06 | 2796 | if (err) { |
c29b77f9 MA |
2797 | error_reportf_err(err, "Could not delete snapshot '%s': ", |
2798 | snapshot_name); | |
a89d89d3 | 2799 | ret = 1; |
b8fb60da | 2800 | } |
f7b4a940 AL |
2801 | break; |
2802 | } | |
2803 | ||
2804 | /* Cleanup */ | |
26f54e9a | 2805 | blk_unref(blk); |
c2abccec MK |
2806 | if (ret) { |
2807 | return 1; | |
2808 | } | |
153859be | 2809 | return 0; |
f7b4a940 AL |
2810 | } |
2811 | ||
3e85c6fd KW |
2812 | static int img_rebase(int argc, char **argv) |
2813 | { | |
26f54e9a | 2814 | BlockBackend *blk = NULL, *blk_old_backing = NULL, *blk_new_backing = NULL; |
396374ca PB |
2815 | uint8_t *buf_old = NULL; |
2816 | uint8_t *buf_new = NULL; | |
f1d3cd79 | 2817 | BlockDriverState *bs = NULL; |
3e85c6fd | 2818 | char *filename; |
40055951 HR |
2819 | const char *fmt, *cache, *src_cache, *out_basefmt, *out_baseimg; |
2820 | int c, flags, src_flags, ret; | |
ce099547 | 2821 | bool writethrough, src_writethrough; |
3e85c6fd | 2822 | int unsafe = 0; |
6b837bc4 | 2823 | int progress = 0; |
f382d43a | 2824 | bool quiet = false; |
34b5d2c6 | 2825 | Error *local_err = NULL; |
eb769f74 | 2826 | bool image_opts = false; |
3e85c6fd KW |
2827 | |
2828 | /* Parse commandline parameters */ | |
e53dbee0 | 2829 | fmt = NULL; |
661a0f71 | 2830 | cache = BDRV_DEFAULT_CACHE; |
40055951 | 2831 | src_cache = BDRV_DEFAULT_CACHE; |
3e85c6fd KW |
2832 | out_baseimg = NULL; |
2833 | out_basefmt = NULL; | |
3e85c6fd | 2834 | for(;;) { |
3babeb15 DB |
2835 | static const struct option long_options[] = { |
2836 | {"help", no_argument, 0, 'h'}, | |
2837 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 2838 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
2839 | {0, 0, 0, 0} |
2840 | }; | |
2841 | c = getopt_long(argc, argv, "hf:F:b:upt:T:q", | |
2842 | long_options, NULL); | |
b8fb60da | 2843 | if (c == -1) { |
3e85c6fd | 2844 | break; |
b8fb60da | 2845 | } |
3e85c6fd | 2846 | switch(c) { |
ef87394c | 2847 | case '?': |
3e85c6fd KW |
2848 | case 'h': |
2849 | help(); | |
2850 | return 0; | |
e53dbee0 KW |
2851 | case 'f': |
2852 | fmt = optarg; | |
2853 | break; | |
3e85c6fd KW |
2854 | case 'F': |
2855 | out_basefmt = optarg; | |
2856 | break; | |
2857 | case 'b': | |
2858 | out_baseimg = optarg; | |
2859 | break; | |
2860 | case 'u': | |
2861 | unsafe = 1; | |
2862 | break; | |
6b837bc4 JS |
2863 | case 'p': |
2864 | progress = 1; | |
2865 | break; | |
661a0f71 FS |
2866 | case 't': |
2867 | cache = optarg; | |
2868 | break; | |
40055951 HR |
2869 | case 'T': |
2870 | src_cache = optarg; | |
2871 | break; | |
f382d43a MR |
2872 | case 'q': |
2873 | quiet = true; | |
2874 | break; | |
3babeb15 DB |
2875 | case OPTION_OBJECT: { |
2876 | QemuOpts *opts; | |
2877 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
2878 | optarg, true); | |
2879 | if (!opts) { | |
2880 | return 1; | |
2881 | } | |
2882 | } break; | |
eb769f74 DB |
2883 | case OPTION_IMAGE_OPTS: |
2884 | image_opts = true; | |
2885 | break; | |
3e85c6fd KW |
2886 | } |
2887 | } | |
2888 | ||
f382d43a MR |
2889 | if (quiet) { |
2890 | progress = 0; | |
2891 | } | |
2892 | ||
ac1307ab FZ |
2893 | if (optind != argc - 1) { |
2894 | error_exit("Expecting one image file name"); | |
2895 | } | |
2896 | if (!unsafe && !out_baseimg) { | |
2897 | error_exit("Must specify backing file (-b) or use unsafe mode (-u)"); | |
b8fb60da | 2898 | } |
3e85c6fd KW |
2899 | filename = argv[optind++]; |
2900 | ||
3babeb15 DB |
2901 | if (qemu_opts_foreach(&qemu_object_opts, |
2902 | user_creatable_add_opts_foreach, | |
51b9b478 | 2903 | NULL, NULL)) { |
3babeb15 DB |
2904 | return 1; |
2905 | } | |
2906 | ||
6b837bc4 JS |
2907 | qemu_progress_init(progress, 2.0); |
2908 | qemu_progress_print(0, 100); | |
2909 | ||
661a0f71 | 2910 | flags = BDRV_O_RDWR | (unsafe ? BDRV_O_NO_BACKING : 0); |
ce099547 | 2911 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); |
661a0f71 FS |
2912 | if (ret < 0) { |
2913 | error_report("Invalid cache option: %s", cache); | |
40ed35a3 | 2914 | goto out; |
661a0f71 FS |
2915 | } |
2916 | ||
ce099547 KW |
2917 | src_flags = 0; |
2918 | ret = bdrv_parse_cache_mode(src_cache, &src_flags, &src_writethrough); | |
40055951 HR |
2919 | if (ret < 0) { |
2920 | error_report("Invalid source cache option: %s", src_cache); | |
40ed35a3 | 2921 | goto out; |
40055951 HR |
2922 | } |
2923 | ||
ce099547 KW |
2924 | /* The source files are opened read-only, don't care about WCE */ |
2925 | assert((src_flags & BDRV_O_RDWR) == 0); | |
2926 | (void) src_writethrough; | |
2927 | ||
3e85c6fd KW |
2928 | /* |
2929 | * Open the images. | |
2930 | * | |
2931 | * Ignore the old backing file for unsafe rebase in case we want to correct | |
2932 | * the reference to a renamed or moved backing file. | |
2933 | */ | |
ce099547 | 2934 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet); |
7e7d56d9 | 2935 | if (!blk) { |
40ed35a3 SH |
2936 | ret = -1; |
2937 | goto out; | |
c2abccec | 2938 | } |
7e7d56d9 | 2939 | bs = blk_bs(blk); |
3e85c6fd | 2940 | |
3e85c6fd | 2941 | if (out_basefmt != NULL) { |
644483d9 | 2942 | if (bdrv_find_format(out_basefmt) == NULL) { |
15654a6d | 2943 | error_report("Invalid format name: '%s'", out_basefmt); |
c2abccec MK |
2944 | ret = -1; |
2945 | goto out; | |
3e85c6fd KW |
2946 | } |
2947 | } | |
2948 | ||
2949 | /* For safe rebasing we need to compare old and new backing file */ | |
40ed35a3 | 2950 | if (!unsafe) { |
9a29e18f | 2951 | char backing_name[PATH_MAX]; |
644483d9 HR |
2952 | QDict *options = NULL; |
2953 | ||
2954 | if (bs->backing_format[0] != '\0') { | |
2955 | options = qdict_new(); | |
2956 | qdict_put(options, "driver", qstring_from_str(bs->backing_format)); | |
2957 | } | |
3e85c6fd | 2958 | |
3e85c6fd | 2959 | bdrv_get_backing_filename(bs, backing_name, sizeof(backing_name)); |
efaa7c4e | 2960 | blk_old_backing = blk_new_open(backing_name, NULL, |
644483d9 HR |
2961 | options, src_flags, &local_err); |
2962 | if (!blk_old_backing) { | |
c29b77f9 MA |
2963 | error_reportf_err(local_err, |
2964 | "Could not open old backing file '%s': ", | |
2965 | backing_name); | |
e84a0dd5 | 2966 | ret = -1; |
c2abccec | 2967 | goto out; |
3e85c6fd | 2968 | } |
644483d9 | 2969 | |
a616673d | 2970 | if (out_baseimg[0]) { |
644483d9 HR |
2971 | if (out_basefmt) { |
2972 | options = qdict_new(); | |
2973 | qdict_put(options, "driver", qstring_from_str(out_basefmt)); | |
2974 | } else { | |
2975 | options = NULL; | |
2976 | } | |
2977 | ||
efaa7c4e | 2978 | blk_new_backing = blk_new_open(out_baseimg, NULL, |
644483d9 HR |
2979 | options, src_flags, &local_err); |
2980 | if (!blk_new_backing) { | |
c29b77f9 MA |
2981 | error_reportf_err(local_err, |
2982 | "Could not open new backing file '%s': ", | |
2983 | out_baseimg); | |
e84a0dd5 | 2984 | ret = -1; |
a616673d AB |
2985 | goto out; |
2986 | } | |
3e85c6fd KW |
2987 | } |
2988 | } | |
2989 | ||
2990 | /* | |
2991 | * Check each unallocated cluster in the COW file. If it is unallocated, | |
2992 | * accesses go to the backing file. We must therefore compare this cluster | |
2993 | * in the old and new backing file, and if they differ we need to copy it | |
2994 | * from the old backing file into the COW file. | |
2995 | * | |
2996 | * If qemu-img crashes during this step, no harm is done. The content of | |
2997 | * the image is the same as the original one at any time. | |
2998 | */ | |
2999 | if (!unsafe) { | |
52bf1e72 MA |
3000 | int64_t num_sectors; |
3001 | int64_t old_backing_num_sectors; | |
3002 | int64_t new_backing_num_sectors = 0; | |
3e85c6fd | 3003 | uint64_t sector; |
cc60e327 | 3004 | int n; |
1f710495 | 3005 | float local_progress = 0; |
d6771bfa | 3006 | |
f1d3cd79 HR |
3007 | buf_old = blk_blockalign(blk, IO_BUF_SIZE); |
3008 | buf_new = blk_blockalign(blk, IO_BUF_SIZE); | |
3e85c6fd | 3009 | |
f1d3cd79 | 3010 | num_sectors = blk_nb_sectors(blk); |
52bf1e72 MA |
3011 | if (num_sectors < 0) { |
3012 | error_report("Could not get size of '%s': %s", | |
3013 | filename, strerror(-num_sectors)); | |
3014 | ret = -1; | |
3015 | goto out; | |
3016 | } | |
f1d3cd79 | 3017 | old_backing_num_sectors = blk_nb_sectors(blk_old_backing); |
52bf1e72 | 3018 | if (old_backing_num_sectors < 0) { |
9a29e18f | 3019 | char backing_name[PATH_MAX]; |
52bf1e72 MA |
3020 | |
3021 | bdrv_get_backing_filename(bs, backing_name, sizeof(backing_name)); | |
3022 | error_report("Could not get size of '%s': %s", | |
3023 | backing_name, strerror(-old_backing_num_sectors)); | |
3024 | ret = -1; | |
3025 | goto out; | |
3026 | } | |
f1d3cd79 HR |
3027 | if (blk_new_backing) { |
3028 | new_backing_num_sectors = blk_nb_sectors(blk_new_backing); | |
52bf1e72 MA |
3029 | if (new_backing_num_sectors < 0) { |
3030 | error_report("Could not get size of '%s': %s", | |
3031 | out_baseimg, strerror(-new_backing_num_sectors)); | |
3032 | ret = -1; | |
3033 | goto out; | |
3034 | } | |
a616673d | 3035 | } |
3e85c6fd | 3036 | |
1f710495 KW |
3037 | if (num_sectors != 0) { |
3038 | local_progress = (float)100 / | |
3039 | (num_sectors / MIN(num_sectors, IO_BUF_SIZE / 512)); | |
3040 | } | |
3041 | ||
3e85c6fd KW |
3042 | for (sector = 0; sector < num_sectors; sector += n) { |
3043 | ||
3044 | /* How many sectors can we handle with the next read? */ | |
3045 | if (sector + (IO_BUF_SIZE / 512) <= num_sectors) { | |
3046 | n = (IO_BUF_SIZE / 512); | |
3047 | } else { | |
3048 | n = num_sectors - sector; | |
3049 | } | |
3050 | ||
3051 | /* If the cluster is allocated, we don't need to take action */ | |
cc60e327 | 3052 | ret = bdrv_is_allocated(bs, sector, n, &n); |
d663640c PB |
3053 | if (ret < 0) { |
3054 | error_report("error while reading image metadata: %s", | |
3055 | strerror(-ret)); | |
3056 | goto out; | |
3057 | } | |
cc60e327 | 3058 | if (ret) { |
3e85c6fd KW |
3059 | continue; |
3060 | } | |
3061 | ||
87a1b3e3 KW |
3062 | /* |
3063 | * Read old and new backing file and take into consideration that | |
3064 | * backing files may be smaller than the COW image. | |
3065 | */ | |
3066 | if (sector >= old_backing_num_sectors) { | |
3067 | memset(buf_old, 0, n * BDRV_SECTOR_SIZE); | |
3068 | } else { | |
3069 | if (sector + n > old_backing_num_sectors) { | |
3070 | n = old_backing_num_sectors - sector; | |
3071 | } | |
3072 | ||
9166920a EB |
3073 | ret = blk_pread(blk_old_backing, sector << BDRV_SECTOR_BITS, |
3074 | buf_old, n << BDRV_SECTOR_BITS); | |
87a1b3e3 KW |
3075 | if (ret < 0) { |
3076 | error_report("error while reading from old backing file"); | |
3077 | goto out; | |
3078 | } | |
3e85c6fd | 3079 | } |
87a1b3e3 | 3080 | |
f1d3cd79 | 3081 | if (sector >= new_backing_num_sectors || !blk_new_backing) { |
87a1b3e3 KW |
3082 | memset(buf_new, 0, n * BDRV_SECTOR_SIZE); |
3083 | } else { | |
3084 | if (sector + n > new_backing_num_sectors) { | |
3085 | n = new_backing_num_sectors - sector; | |
3086 | } | |
3087 | ||
9166920a EB |
3088 | ret = blk_pread(blk_new_backing, sector << BDRV_SECTOR_BITS, |
3089 | buf_new, n << BDRV_SECTOR_BITS); | |
87a1b3e3 KW |
3090 | if (ret < 0) { |
3091 | error_report("error while reading from new backing file"); | |
3092 | goto out; | |
3093 | } | |
3e85c6fd KW |
3094 | } |
3095 | ||
3096 | /* If they differ, we need to write to the COW file */ | |
3097 | uint64_t written = 0; | |
3098 | ||
3099 | while (written < n) { | |
3100 | int pnum; | |
3101 | ||
3102 | if (compare_sectors(buf_old + written * 512, | |
60b1bd4f | 3103 | buf_new + written * 512, n - written, &pnum)) |
3e85c6fd | 3104 | { |
9166920a EB |
3105 | ret = blk_pwrite(blk, |
3106 | (sector + written) << BDRV_SECTOR_BITS, | |
3107 | buf_old + written * 512, | |
3108 | pnum << BDRV_SECTOR_BITS, 0); | |
3e85c6fd | 3109 | if (ret < 0) { |
15654a6d | 3110 | error_report("Error while writing to COW image: %s", |
3e85c6fd | 3111 | strerror(-ret)); |
c2abccec | 3112 | goto out; |
3e85c6fd KW |
3113 | } |
3114 | } | |
3115 | ||
3116 | written += pnum; | |
3117 | } | |
6b837bc4 | 3118 | qemu_progress_print(local_progress, 100); |
3e85c6fd KW |
3119 | } |
3120 | } | |
3121 | ||
3122 | /* | |
3123 | * Change the backing file. All clusters that are different from the old | |
3124 | * backing file are overwritten in the COW file now, so the visible content | |
3125 | * doesn't change when we switch the backing file. | |
3126 | */ | |
a616673d AB |
3127 | if (out_baseimg && *out_baseimg) { |
3128 | ret = bdrv_change_backing_file(bs, out_baseimg, out_basefmt); | |
3129 | } else { | |
3130 | ret = bdrv_change_backing_file(bs, NULL, NULL); | |
3131 | } | |
3132 | ||
3e85c6fd | 3133 | if (ret == -ENOSPC) { |
15654a6d JS |
3134 | error_report("Could not change the backing file to '%s': No " |
3135 | "space left in the file header", out_baseimg); | |
3e85c6fd | 3136 | } else if (ret < 0) { |
15654a6d | 3137 | error_report("Could not change the backing file to '%s': %s", |
3e85c6fd KW |
3138 | out_baseimg, strerror(-ret)); |
3139 | } | |
3140 | ||
6b837bc4 | 3141 | qemu_progress_print(100, 0); |
3e85c6fd KW |
3142 | /* |
3143 | * TODO At this point it is possible to check if any clusters that are | |
3144 | * allocated in the COW file are the same in the backing file. If so, they | |
3145 | * could be dropped from the COW file. Don't do this before switching the | |
3146 | * backing file, in case of a crash this would lead to corruption. | |
3147 | */ | |
c2abccec | 3148 | out: |
6b837bc4 | 3149 | qemu_progress_end(); |
3e85c6fd KW |
3150 | /* Cleanup */ |
3151 | if (!unsafe) { | |
26f54e9a | 3152 | blk_unref(blk_old_backing); |
26f54e9a | 3153 | blk_unref(blk_new_backing); |
3e85c6fd | 3154 | } |
396374ca PB |
3155 | qemu_vfree(buf_old); |
3156 | qemu_vfree(buf_new); | |
3e85c6fd | 3157 | |
26f54e9a | 3158 | blk_unref(blk); |
c2abccec MK |
3159 | if (ret) { |
3160 | return 1; | |
3161 | } | |
3e85c6fd KW |
3162 | return 0; |
3163 | } | |
3164 | ||
ae6b0ed6 SH |
3165 | static int img_resize(int argc, char **argv) |
3166 | { | |
6750e795 | 3167 | Error *err = NULL; |
ae6b0ed6 SH |
3168 | int c, ret, relative; |
3169 | const char *filename, *fmt, *size; | |
3170 | int64_t n, total_size; | |
f382d43a | 3171 | bool quiet = false; |
26f54e9a | 3172 | BlockBackend *blk = NULL; |
20caf0f7 | 3173 | QemuOpts *param; |
3babeb15 | 3174 | |
20caf0f7 DXW |
3175 | static QemuOptsList resize_options = { |
3176 | .name = "resize_options", | |
3177 | .head = QTAILQ_HEAD_INITIALIZER(resize_options.head), | |
3178 | .desc = { | |
3179 | { | |
3180 | .name = BLOCK_OPT_SIZE, | |
3181 | .type = QEMU_OPT_SIZE, | |
3182 | .help = "Virtual disk size" | |
3183 | }, { | |
3184 | /* end of list */ | |
3185 | } | |
ae6b0ed6 | 3186 | }, |
ae6b0ed6 | 3187 | }; |
eb769f74 | 3188 | bool image_opts = false; |
ae6b0ed6 | 3189 | |
e80fec7f KW |
3190 | /* Remove size from argv manually so that negative numbers are not treated |
3191 | * as options by getopt. */ | |
3192 | if (argc < 3) { | |
ac1307ab | 3193 | error_exit("Not enough arguments"); |
e80fec7f KW |
3194 | return 1; |
3195 | } | |
3196 | ||
3197 | size = argv[--argc]; | |
3198 | ||
3199 | /* Parse getopt arguments */ | |
ae6b0ed6 SH |
3200 | fmt = NULL; |
3201 | for(;;) { | |
3babeb15 DB |
3202 | static const struct option long_options[] = { |
3203 | {"help", no_argument, 0, 'h'}, | |
3204 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 3205 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
3206 | {0, 0, 0, 0} |
3207 | }; | |
3208 | c = getopt_long(argc, argv, "f:hq", | |
3209 | long_options, NULL); | |
ae6b0ed6 SH |
3210 | if (c == -1) { |
3211 | break; | |
3212 | } | |
3213 | switch(c) { | |
ef87394c | 3214 | case '?': |
ae6b0ed6 SH |
3215 | case 'h': |
3216 | help(); | |
3217 | break; | |
3218 | case 'f': | |
3219 | fmt = optarg; | |
3220 | break; | |
f382d43a MR |
3221 | case 'q': |
3222 | quiet = true; | |
3223 | break; | |
3babeb15 DB |
3224 | case OPTION_OBJECT: { |
3225 | QemuOpts *opts; | |
3226 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
3227 | optarg, true); | |
3228 | if (!opts) { | |
3229 | return 1; | |
3230 | } | |
3231 | } break; | |
eb769f74 DB |
3232 | case OPTION_IMAGE_OPTS: |
3233 | image_opts = true; | |
3234 | break; | |
ae6b0ed6 SH |
3235 | } |
3236 | } | |
fc11eb26 | 3237 | if (optind != argc - 1) { |
ac1307ab | 3238 | error_exit("Expecting one image file name"); |
ae6b0ed6 SH |
3239 | } |
3240 | filename = argv[optind++]; | |
ae6b0ed6 | 3241 | |
3babeb15 DB |
3242 | if (qemu_opts_foreach(&qemu_object_opts, |
3243 | user_creatable_add_opts_foreach, | |
51b9b478 | 3244 | NULL, NULL)) { |
3babeb15 DB |
3245 | return 1; |
3246 | } | |
3247 | ||
ae6b0ed6 SH |
3248 | /* Choose grow, shrink, or absolute resize mode */ |
3249 | switch (size[0]) { | |
3250 | case '+': | |
3251 | relative = 1; | |
3252 | size++; | |
3253 | break; | |
3254 | case '-': | |
3255 | relative = -1; | |
3256 | size++; | |
3257 | break; | |
3258 | default: | |
3259 | relative = 0; | |
3260 | break; | |
3261 | } | |
3262 | ||
3263 | /* Parse size */ | |
87ea75d5 | 3264 | param = qemu_opts_create(&resize_options, NULL, 0, &error_abort); |
f43e47db | 3265 | qemu_opt_set(param, BLOCK_OPT_SIZE, size, &err); |
6750e795 MA |
3266 | if (err) { |
3267 | error_report_err(err); | |
2a81998a | 3268 | ret = -1; |
20caf0f7 | 3269 | qemu_opts_del(param); |
2a81998a | 3270 | goto out; |
ae6b0ed6 | 3271 | } |
20caf0f7 DXW |
3272 | n = qemu_opt_get_size(param, BLOCK_OPT_SIZE, 0); |
3273 | qemu_opts_del(param); | |
ae6b0ed6 | 3274 | |
efaa7c4e | 3275 | blk = img_open(image_opts, filename, fmt, |
ce099547 | 3276 | BDRV_O_RDWR, false, quiet); |
7e7d56d9 | 3277 | if (!blk) { |
2a81998a JS |
3278 | ret = -1; |
3279 | goto out; | |
c2abccec | 3280 | } |
ae6b0ed6 SH |
3281 | |
3282 | if (relative) { | |
f1d3cd79 | 3283 | total_size = blk_getlength(blk) + n * relative; |
ae6b0ed6 SH |
3284 | } else { |
3285 | total_size = n; | |
3286 | } | |
3287 | if (total_size <= 0) { | |
15654a6d | 3288 | error_report("New image size must be positive"); |
c2abccec MK |
3289 | ret = -1; |
3290 | goto out; | |
ae6b0ed6 SH |
3291 | } |
3292 | ||
f1d3cd79 | 3293 | ret = blk_truncate(blk, total_size); |
ae6b0ed6 SH |
3294 | switch (ret) { |
3295 | case 0: | |
f382d43a | 3296 | qprintf(quiet, "Image resized.\n"); |
ae6b0ed6 SH |
3297 | break; |
3298 | case -ENOTSUP: | |
259b2173 | 3299 | error_report("This image does not support resize"); |
ae6b0ed6 SH |
3300 | break; |
3301 | case -EACCES: | |
15654a6d | 3302 | error_report("Image is read-only"); |
ae6b0ed6 SH |
3303 | break; |
3304 | default: | |
bcf23482 | 3305 | error_report("Error resizing image: %s", strerror(-ret)); |
ae6b0ed6 SH |
3306 | break; |
3307 | } | |
c2abccec | 3308 | out: |
26f54e9a | 3309 | blk_unref(blk); |
c2abccec MK |
3310 | if (ret) { |
3311 | return 1; | |
3312 | } | |
ae6b0ed6 SH |
3313 | return 0; |
3314 | } | |
3315 | ||
76a3a34d | 3316 | static void amend_status_cb(BlockDriverState *bs, |
8b13976d HR |
3317 | int64_t offset, int64_t total_work_size, |
3318 | void *opaque) | |
76a3a34d HR |
3319 | { |
3320 | qemu_progress_print(100.f * offset / total_work_size, 0); | |
3321 | } | |
3322 | ||
6f176b48 HR |
3323 | static int img_amend(int argc, char **argv) |
3324 | { | |
dc523cd3 | 3325 | Error *err = NULL; |
6f176b48 HR |
3326 | int c, ret = 0; |
3327 | char *options = NULL; | |
83d0521a CL |
3328 | QemuOptsList *create_opts = NULL; |
3329 | QemuOpts *opts = NULL; | |
bd39e6ed HR |
3330 | const char *fmt = NULL, *filename, *cache; |
3331 | int flags; | |
ce099547 | 3332 | bool writethrough; |
76a3a34d | 3333 | bool quiet = false, progress = false; |
26f54e9a | 3334 | BlockBackend *blk = NULL; |
6f176b48 | 3335 | BlockDriverState *bs = NULL; |
eb769f74 | 3336 | bool image_opts = false; |
6f176b48 | 3337 | |
bd39e6ed | 3338 | cache = BDRV_DEFAULT_CACHE; |
6f176b48 | 3339 | for (;;) { |
3babeb15 DB |
3340 | static const struct option long_options[] = { |
3341 | {"help", no_argument, 0, 'h'}, | |
3342 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 3343 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
3344 | {0, 0, 0, 0} |
3345 | }; | |
3346 | c = getopt_long(argc, argv, "ho:f:t:pq", | |
3347 | long_options, NULL); | |
6f176b48 HR |
3348 | if (c == -1) { |
3349 | break; | |
3350 | } | |
3351 | ||
3352 | switch (c) { | |
3353 | case 'h': | |
3354 | case '?': | |
3355 | help(); | |
3356 | break; | |
3357 | case 'o': | |
626f84f3 KW |
3358 | if (!is_valid_option_list(optarg)) { |
3359 | error_report("Invalid option list: %s", optarg); | |
3360 | ret = -1; | |
e814dffc | 3361 | goto out_no_progress; |
626f84f3 KW |
3362 | } |
3363 | if (!options) { | |
3364 | options = g_strdup(optarg); | |
3365 | } else { | |
3366 | char *old_options = options; | |
3367 | options = g_strdup_printf("%s,%s", options, optarg); | |
3368 | g_free(old_options); | |
3369 | } | |
6f176b48 HR |
3370 | break; |
3371 | case 'f': | |
3372 | fmt = optarg; | |
3373 | break; | |
bd39e6ed HR |
3374 | case 't': |
3375 | cache = optarg; | |
3376 | break; | |
76a3a34d HR |
3377 | case 'p': |
3378 | progress = true; | |
3379 | break; | |
6f176b48 HR |
3380 | case 'q': |
3381 | quiet = true; | |
3382 | break; | |
3babeb15 DB |
3383 | case OPTION_OBJECT: |
3384 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
3385 | optarg, true); | |
3386 | if (!opts) { | |
3387 | ret = -1; | |
3388 | goto out_no_progress; | |
3389 | } | |
3390 | break; | |
eb769f74 DB |
3391 | case OPTION_IMAGE_OPTS: |
3392 | image_opts = true; | |
3393 | break; | |
6f176b48 HR |
3394 | } |
3395 | } | |
3396 | ||
a283cb6e | 3397 | if (!options) { |
ac1307ab | 3398 | error_exit("Must specify options (-o)"); |
6f176b48 HR |
3399 | } |
3400 | ||
3babeb15 DB |
3401 | if (qemu_opts_foreach(&qemu_object_opts, |
3402 | user_creatable_add_opts_foreach, | |
51b9b478 | 3403 | NULL, NULL)) { |
3babeb15 DB |
3404 | ret = -1; |
3405 | goto out_no_progress; | |
3406 | } | |
3407 | ||
76a3a34d HR |
3408 | if (quiet) { |
3409 | progress = false; | |
3410 | } | |
3411 | qemu_progress_init(progress, 1.0); | |
3412 | ||
a283cb6e KW |
3413 | filename = (optind == argc - 1) ? argv[argc - 1] : NULL; |
3414 | if (fmt && has_help_option(options)) { | |
3415 | /* If a format is explicitly specified (and possibly no filename is | |
3416 | * given), print option help here */ | |
3417 | ret = print_block_option_help(filename, fmt); | |
3418 | goto out; | |
6f176b48 HR |
3419 | } |
3420 | ||
a283cb6e | 3421 | if (optind != argc - 1) { |
b2f27e44 HR |
3422 | error_report("Expecting one image file name"); |
3423 | ret = -1; | |
3424 | goto out; | |
a283cb6e | 3425 | } |
6f176b48 | 3426 | |
ce099547 KW |
3427 | flags = BDRV_O_RDWR; |
3428 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); | |
bd39e6ed HR |
3429 | if (ret < 0) { |
3430 | error_report("Invalid cache option: %s", cache); | |
3431 | goto out; | |
3432 | } | |
3433 | ||
ce099547 | 3434 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet); |
7e7d56d9 | 3435 | if (!blk) { |
6f176b48 HR |
3436 | ret = -1; |
3437 | goto out; | |
3438 | } | |
7e7d56d9 | 3439 | bs = blk_bs(blk); |
6f176b48 HR |
3440 | |
3441 | fmt = bs->drv->format_name; | |
3442 | ||
626f84f3 | 3443 | if (has_help_option(options)) { |
a283cb6e | 3444 | /* If the format was auto-detected, print option help here */ |
6f176b48 HR |
3445 | ret = print_block_option_help(filename, fmt); |
3446 | goto out; | |
3447 | } | |
3448 | ||
b2439d26 HR |
3449 | if (!bs->drv->create_opts) { |
3450 | error_report("Format driver '%s' does not support any options to amend", | |
3451 | fmt); | |
3452 | ret = -1; | |
3453 | goto out; | |
3454 | } | |
3455 | ||
c282e1fd | 3456 | create_opts = qemu_opts_append(create_opts, bs->drv->create_opts); |
83d0521a | 3457 | opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); |
dc523cd3 MA |
3458 | if (options) { |
3459 | qemu_opts_do_parse(opts, options, NULL, &err); | |
3460 | if (err) { | |
97a2ca7a | 3461 | error_report_err(err); |
dc523cd3 MA |
3462 | ret = -1; |
3463 | goto out; | |
3464 | } | |
6f176b48 HR |
3465 | } |
3466 | ||
76a3a34d HR |
3467 | /* In case the driver does not call amend_status_cb() */ |
3468 | qemu_progress_print(0.f, 0); | |
8b13976d | 3469 | ret = bdrv_amend_options(bs, opts, &amend_status_cb, NULL); |
76a3a34d | 3470 | qemu_progress_print(100.f, 0); |
6f176b48 HR |
3471 | if (ret < 0) { |
3472 | error_report("Error while amending options: %s", strerror(-ret)); | |
3473 | goto out; | |
3474 | } | |
3475 | ||
3476 | out: | |
76a3a34d HR |
3477 | qemu_progress_end(); |
3478 | ||
e814dffc | 3479 | out_no_progress: |
26f54e9a | 3480 | blk_unref(blk); |
83d0521a CL |
3481 | qemu_opts_del(opts); |
3482 | qemu_opts_free(create_opts); | |
626f84f3 KW |
3483 | g_free(options); |
3484 | ||
6f176b48 HR |
3485 | if (ret) { |
3486 | return 1; | |
3487 | } | |
3488 | return 0; | |
3489 | } | |
3490 | ||
b6133b8c KW |
3491 | typedef struct BenchData { |
3492 | BlockBackend *blk; | |
3493 | uint64_t image_size; | |
b6495fa8 | 3494 | bool write; |
b6133b8c | 3495 | int bufsize; |
83de9be0 | 3496 | int step; |
b6133b8c KW |
3497 | int nrreq; |
3498 | int n; | |
55d539c8 KW |
3499 | int flush_interval; |
3500 | bool drain_on_flush; | |
b6133b8c KW |
3501 | uint8_t *buf; |
3502 | QEMUIOVector *qiov; | |
3503 | ||
3504 | int in_flight; | |
55d539c8 | 3505 | bool in_flush; |
b6133b8c KW |
3506 | uint64_t offset; |
3507 | } BenchData; | |
3508 | ||
55d539c8 KW |
3509 | static void bench_undrained_flush_cb(void *opaque, int ret) |
3510 | { | |
3511 | if (ret < 0) { | |
df3c286c | 3512 | error_report("Failed flush request: %s", strerror(-ret)); |
55d539c8 KW |
3513 | exit(EXIT_FAILURE); |
3514 | } | |
3515 | } | |
3516 | ||
b6133b8c KW |
3517 | static void bench_cb(void *opaque, int ret) |
3518 | { | |
3519 | BenchData *b = opaque; | |
3520 | BlockAIOCB *acb; | |
3521 | ||
3522 | if (ret < 0) { | |
df3c286c | 3523 | error_report("Failed request: %s", strerror(-ret)); |
b6133b8c KW |
3524 | exit(EXIT_FAILURE); |
3525 | } | |
55d539c8 KW |
3526 | |
3527 | if (b->in_flush) { | |
3528 | /* Just finished a flush with drained queue: Start next requests */ | |
3529 | assert(b->in_flight == 0); | |
3530 | b->in_flush = false; | |
3531 | } else if (b->in_flight > 0) { | |
3532 | int remaining = b->n - b->in_flight; | |
3533 | ||
b6133b8c KW |
3534 | b->n--; |
3535 | b->in_flight--; | |
55d539c8 KW |
3536 | |
3537 | /* Time for flush? Drain queue if requested, then flush */ | |
3538 | if (b->flush_interval && remaining % b->flush_interval == 0) { | |
3539 | if (!b->in_flight || !b->drain_on_flush) { | |
3540 | BlockCompletionFunc *cb; | |
3541 | ||
3542 | if (b->drain_on_flush) { | |
3543 | b->in_flush = true; | |
3544 | cb = bench_cb; | |
3545 | } else { | |
3546 | cb = bench_undrained_flush_cb; | |
3547 | } | |
3548 | ||
3549 | acb = blk_aio_flush(b->blk, cb, b); | |
3550 | if (!acb) { | |
3551 | error_report("Failed to issue flush request"); | |
3552 | exit(EXIT_FAILURE); | |
3553 | } | |
3554 | } | |
3555 | if (b->drain_on_flush) { | |
3556 | return; | |
3557 | } | |
3558 | } | |
b6133b8c KW |
3559 | } |
3560 | ||
3561 | while (b->n > b->in_flight && b->in_flight < b->nrreq) { | |
b6495fa8 KW |
3562 | if (b->write) { |
3563 | acb = blk_aio_pwritev(b->blk, b->offset, b->qiov, 0, | |
3564 | bench_cb, b); | |
3565 | } else { | |
3566 | acb = blk_aio_preadv(b->blk, b->offset, b->qiov, 0, | |
3567 | bench_cb, b); | |
3568 | } | |
b6133b8c KW |
3569 | if (!acb) { |
3570 | error_report("Failed to issue request"); | |
3571 | exit(EXIT_FAILURE); | |
3572 | } | |
3573 | b->in_flight++; | |
83de9be0 | 3574 | b->offset += b->step; |
b6133b8c KW |
3575 | b->offset %= b->image_size; |
3576 | } | |
3577 | } | |
3578 | ||
3579 | static int img_bench(int argc, char **argv) | |
3580 | { | |
3581 | int c, ret = 0; | |
3582 | const char *fmt = NULL, *filename; | |
3583 | bool quiet = false; | |
3584 | bool image_opts = false; | |
b6495fa8 | 3585 | bool is_write = false; |
b6133b8c KW |
3586 | int count = 75000; |
3587 | int depth = 64; | |
d3199a31 | 3588 | int64_t offset = 0; |
b6133b8c | 3589 | size_t bufsize = 4096; |
b6495fa8 | 3590 | int pattern = 0; |
83de9be0 | 3591 | size_t step = 0; |
55d539c8 KW |
3592 | int flush_interval = 0; |
3593 | bool drain_on_flush = true; | |
b6133b8c KW |
3594 | int64_t image_size; |
3595 | BlockBackend *blk = NULL; | |
3596 | BenchData data = {}; | |
3597 | int flags = 0; | |
604e8613 | 3598 | bool writethrough = false; |
b6133b8c KW |
3599 | struct timeval t1, t2; |
3600 | int i; | |
3601 | ||
3602 | for (;;) { | |
3603 | static const struct option long_options[] = { | |
3604 | {"help", no_argument, 0, 'h'}, | |
55d539c8 | 3605 | {"flush-interval", required_argument, 0, OPTION_FLUSH_INTERVAL}, |
b6133b8c | 3606 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
b6495fa8 | 3607 | {"pattern", required_argument, 0, OPTION_PATTERN}, |
55d539c8 | 3608 | {"no-drain", no_argument, 0, OPTION_NO_DRAIN}, |
b6133b8c KW |
3609 | {0, 0, 0, 0} |
3610 | }; | |
83de9be0 | 3611 | c = getopt_long(argc, argv, "hc:d:f:no:qs:S:t:w", long_options, NULL); |
b6133b8c KW |
3612 | if (c == -1) { |
3613 | break; | |
3614 | } | |
3615 | ||
3616 | switch (c) { | |
3617 | case 'h': | |
3618 | case '?': | |
3619 | help(); | |
3620 | break; | |
3621 | case 'c': | |
3622 | { | |
3623 | char *end; | |
3624 | errno = 0; | |
3625 | count = strtoul(optarg, &end, 0); | |
3626 | if (errno || *end || count > INT_MAX) { | |
3627 | error_report("Invalid request count specified"); | |
3628 | return 1; | |
3629 | } | |
3630 | break; | |
3631 | } | |
3632 | case 'd': | |
3633 | { | |
3634 | char *end; | |
3635 | errno = 0; | |
3636 | depth = strtoul(optarg, &end, 0); | |
3637 | if (errno || *end || depth > INT_MAX) { | |
3638 | error_report("Invalid queue depth specified"); | |
3639 | return 1; | |
3640 | } | |
3641 | break; | |
3642 | } | |
3643 | case 'f': | |
3644 | fmt = optarg; | |
3645 | break; | |
3646 | case 'n': | |
3647 | flags |= BDRV_O_NATIVE_AIO; | |
3648 | break; | |
d3199a31 KW |
3649 | case 'o': |
3650 | { | |
3651 | char *end; | |
3652 | errno = 0; | |
3653 | offset = qemu_strtosz_suffix(optarg, &end, | |
3654 | QEMU_STRTOSZ_DEFSUFFIX_B); | |
3655 | if (offset < 0|| *end) { | |
3656 | error_report("Invalid offset specified"); | |
3657 | return 1; | |
3658 | } | |
3659 | break; | |
3660 | } | |
3661 | break; | |
b6133b8c KW |
3662 | case 'q': |
3663 | quiet = true; | |
3664 | break; | |
3665 | case 's': | |
3666 | { | |
3667 | int64_t sval; | |
3668 | char *end; | |
3669 | ||
3670 | sval = qemu_strtosz_suffix(optarg, &end, QEMU_STRTOSZ_DEFSUFFIX_B); | |
3671 | if (sval < 0 || sval > INT_MAX || *end) { | |
3672 | error_report("Invalid buffer size specified"); | |
3673 | return 1; | |
3674 | } | |
3675 | ||
3676 | bufsize = sval; | |
3677 | break; | |
3678 | } | |
83de9be0 KW |
3679 | case 'S': |
3680 | { | |
3681 | int64_t sval; | |
3682 | char *end; | |
3683 | ||
3684 | sval = qemu_strtosz_suffix(optarg, &end, QEMU_STRTOSZ_DEFSUFFIX_B); | |
3685 | if (sval < 0 || sval > INT_MAX || *end) { | |
3686 | error_report("Invalid step size specified"); | |
3687 | return 1; | |
3688 | } | |
3689 | ||
3690 | step = sval; | |
3691 | break; | |
3692 | } | |
b6133b8c KW |
3693 | case 't': |
3694 | ret = bdrv_parse_cache_mode(optarg, &flags, &writethrough); | |
3695 | if (ret < 0) { | |
3696 | error_report("Invalid cache mode"); | |
3697 | ret = -1; | |
3698 | goto out; | |
3699 | } | |
3700 | break; | |
b6495fa8 KW |
3701 | case 'w': |
3702 | flags |= BDRV_O_RDWR; | |
3703 | is_write = true; | |
3704 | break; | |
3705 | case OPTION_PATTERN: | |
3706 | { | |
3707 | char *end; | |
3708 | errno = 0; | |
3709 | pattern = strtoul(optarg, &end, 0); | |
3710 | if (errno || *end || pattern > 0xff) { | |
3711 | error_report("Invalid pattern byte specified"); | |
3712 | return 1; | |
3713 | } | |
3714 | break; | |
3715 | } | |
55d539c8 KW |
3716 | case OPTION_FLUSH_INTERVAL: |
3717 | { | |
3718 | char *end; | |
3719 | errno = 0; | |
3720 | flush_interval = strtoul(optarg, &end, 0); | |
3721 | if (errno || *end || flush_interval > INT_MAX) { | |
3722 | error_report("Invalid flush interval specified"); | |
3723 | return 1; | |
3724 | } | |
3725 | break; | |
3726 | } | |
3727 | case OPTION_NO_DRAIN: | |
3728 | drain_on_flush = false; | |
3729 | break; | |
b6133b8c KW |
3730 | case OPTION_IMAGE_OPTS: |
3731 | image_opts = true; | |
3732 | break; | |
3733 | } | |
3734 | } | |
3735 | ||
3736 | if (optind != argc - 1) { | |
3737 | error_exit("Expecting one image file name"); | |
3738 | } | |
3739 | filename = argv[argc - 1]; | |
3740 | ||
55d539c8 KW |
3741 | if (!is_write && flush_interval) { |
3742 | error_report("--flush-interval is only available in write tests"); | |
3743 | ret = -1; | |
3744 | goto out; | |
3745 | } | |
3746 | if (flush_interval && flush_interval < depth) { | |
3747 | error_report("Flush interval can't be smaller than depth"); | |
3748 | ret = -1; | |
3749 | goto out; | |
3750 | } | |
3751 | ||
b6133b8c KW |
3752 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet); |
3753 | if (!blk) { | |
3754 | ret = -1; | |
3755 | goto out; | |
3756 | } | |
3757 | ||
3758 | image_size = blk_getlength(blk); | |
3759 | if (image_size < 0) { | |
3760 | ret = image_size; | |
3761 | goto out; | |
3762 | } | |
3763 | ||
3764 | data = (BenchData) { | |
55d539c8 KW |
3765 | .blk = blk, |
3766 | .image_size = image_size, | |
3767 | .bufsize = bufsize, | |
3768 | .step = step ?: bufsize, | |
3769 | .nrreq = depth, | |
3770 | .n = count, | |
3771 | .offset = offset, | |
3772 | .write = is_write, | |
3773 | .flush_interval = flush_interval, | |
3774 | .drain_on_flush = drain_on_flush, | |
b6133b8c | 3775 | }; |
d3199a31 | 3776 | printf("Sending %d %s requests, %d bytes each, %d in parallel " |
83de9be0 | 3777 | "(starting at offset %" PRId64 ", step size %d)\n", |
d3199a31 | 3778 | data.n, data.write ? "write" : "read", data.bufsize, data.nrreq, |
83de9be0 | 3779 | data.offset, data.step); |
55d539c8 KW |
3780 | if (flush_interval) { |
3781 | printf("Sending flush every %d requests\n", flush_interval); | |
3782 | } | |
b6133b8c KW |
3783 | |
3784 | data.buf = blk_blockalign(blk, data.nrreq * data.bufsize); | |
b6495fa8 KW |
3785 | memset(data.buf, pattern, data.nrreq * data.bufsize); |
3786 | ||
b6133b8c KW |
3787 | data.qiov = g_new(QEMUIOVector, data.nrreq); |
3788 | for (i = 0; i < data.nrreq; i++) { | |
3789 | qemu_iovec_init(&data.qiov[i], 1); | |
3790 | qemu_iovec_add(&data.qiov[i], | |
3791 | data.buf + i * data.bufsize, data.bufsize); | |
3792 | } | |
3793 | ||
3794 | gettimeofday(&t1, NULL); | |
3795 | bench_cb(&data, 0); | |
3796 | ||
3797 | while (data.n > 0) { | |
3798 | main_loop_wait(false); | |
3799 | } | |
3800 | gettimeofday(&t2, NULL); | |
3801 | ||
3802 | printf("Run completed in %3.3f seconds.\n", | |
3803 | (t2.tv_sec - t1.tv_sec) | |
3804 | + ((double)(t2.tv_usec - t1.tv_usec) / 1000000)); | |
3805 | ||
3806 | out: | |
3807 | qemu_vfree(data.buf); | |
3808 | blk_unref(blk); | |
3809 | ||
3810 | if (ret) { | |
86ce1f6e RS |
3811 | return 1; |
3812 | } | |
3813 | return 0; | |
3814 | } | |
3815 | ||
3816 | #define C_BS 01 | |
3817 | #define C_COUNT 02 | |
3818 | #define C_IF 04 | |
3819 | #define C_OF 010 | |
f7c15533 | 3820 | #define C_SKIP 020 |
86ce1f6e RS |
3821 | |
3822 | struct DdInfo { | |
3823 | unsigned int flags; | |
3824 | int64_t count; | |
3825 | }; | |
3826 | ||
3827 | struct DdIo { | |
3828 | int bsz; /* Block size */ | |
3829 | char *filename; | |
3830 | uint8_t *buf; | |
f7c15533 | 3831 | int64_t offset; |
86ce1f6e RS |
3832 | }; |
3833 | ||
3834 | struct DdOpts { | |
3835 | const char *name; | |
3836 | int (*f)(const char *, struct DdIo *, struct DdIo *, struct DdInfo *); | |
3837 | unsigned int flag; | |
3838 | }; | |
3839 | ||
3840 | static int img_dd_bs(const char *arg, | |
3841 | struct DdIo *in, struct DdIo *out, | |
3842 | struct DdInfo *dd) | |
3843 | { | |
3844 | char *end; | |
3845 | int64_t res; | |
3846 | ||
3847 | res = qemu_strtosz_suffix(arg, &end, QEMU_STRTOSZ_DEFSUFFIX_B); | |
3848 | ||
3849 | if (res <= 0 || res > INT_MAX || *end) { | |
3850 | error_report("invalid number: '%s'", arg); | |
3851 | return 1; | |
3852 | } | |
3853 | in->bsz = out->bsz = res; | |
3854 | ||
3855 | return 0; | |
3856 | } | |
3857 | ||
3858 | static int img_dd_count(const char *arg, | |
3859 | struct DdIo *in, struct DdIo *out, | |
3860 | struct DdInfo *dd) | |
3861 | { | |
3862 | char *end; | |
3863 | ||
3864 | dd->count = qemu_strtosz_suffix(arg, &end, QEMU_STRTOSZ_DEFSUFFIX_B); | |
3865 | ||
3866 | if (dd->count < 0 || *end) { | |
3867 | error_report("invalid number: '%s'", arg); | |
3868 | return 1; | |
3869 | } | |
3870 | ||
3871 | return 0; | |
3872 | } | |
3873 | ||
3874 | static int img_dd_if(const char *arg, | |
3875 | struct DdIo *in, struct DdIo *out, | |
3876 | struct DdInfo *dd) | |
3877 | { | |
3878 | in->filename = g_strdup(arg); | |
3879 | ||
3880 | return 0; | |
3881 | } | |
3882 | ||
3883 | static int img_dd_of(const char *arg, | |
3884 | struct DdIo *in, struct DdIo *out, | |
3885 | struct DdInfo *dd) | |
3886 | { | |
3887 | out->filename = g_strdup(arg); | |
3888 | ||
3889 | return 0; | |
3890 | } | |
3891 | ||
f7c15533 RS |
3892 | static int img_dd_skip(const char *arg, |
3893 | struct DdIo *in, struct DdIo *out, | |
3894 | struct DdInfo *dd) | |
3895 | { | |
3896 | char *end; | |
3897 | ||
3898 | in->offset = qemu_strtosz_suffix(arg, &end, QEMU_STRTOSZ_DEFSUFFIX_B); | |
3899 | ||
3900 | if (in->offset < 0 || *end) { | |
3901 | error_report("invalid number: '%s'", arg); | |
3902 | return 1; | |
3903 | } | |
3904 | ||
3905 | return 0; | |
3906 | } | |
3907 | ||
86ce1f6e RS |
3908 | static int img_dd(int argc, char **argv) |
3909 | { | |
3910 | int ret = 0; | |
3911 | char *arg = NULL; | |
3912 | char *tmp; | |
3913 | BlockDriver *drv = NULL, *proto_drv = NULL; | |
3914 | BlockBackend *blk1 = NULL, *blk2 = NULL; | |
3915 | QemuOpts *opts = NULL; | |
3916 | QemuOptsList *create_opts = NULL; | |
3917 | Error *local_err = NULL; | |
3918 | bool image_opts = false; | |
3919 | int c, i; | |
3920 | const char *out_fmt = "raw"; | |
3921 | const char *fmt = NULL; | |
3922 | int64_t size = 0; | |
3923 | int64_t block_count = 0, out_pos, in_pos; | |
3924 | struct DdInfo dd = { | |
3925 | .flags = 0, | |
3926 | .count = 0, | |
3927 | }; | |
3928 | struct DdIo in = { | |
3929 | .bsz = 512, /* Block size is by default 512 bytes */ | |
3930 | .filename = NULL, | |
f7c15533 RS |
3931 | .buf = NULL, |
3932 | .offset = 0 | |
86ce1f6e RS |
3933 | }; |
3934 | struct DdIo out = { | |
3935 | .bsz = 512, | |
3936 | .filename = NULL, | |
f7c15533 RS |
3937 | .buf = NULL, |
3938 | .offset = 0 | |
86ce1f6e RS |
3939 | }; |
3940 | ||
3941 | const struct DdOpts options[] = { | |
3942 | { "bs", img_dd_bs, C_BS }, | |
3943 | { "count", img_dd_count, C_COUNT }, | |
3944 | { "if", img_dd_if, C_IF }, | |
3945 | { "of", img_dd_of, C_OF }, | |
f7c15533 | 3946 | { "skip", img_dd_skip, C_SKIP }, |
86ce1f6e RS |
3947 | { NULL, NULL, 0 } |
3948 | }; | |
3949 | const struct option long_options[] = { | |
3950 | { "help", no_argument, 0, 'h'}, | |
3951 | { "image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, | |
3952 | { 0, 0, 0, 0 } | |
3953 | }; | |
3954 | ||
3955 | while ((c = getopt_long(argc, argv, "hf:O:", long_options, NULL))) { | |
3956 | if (c == EOF) { | |
3957 | break; | |
3958 | } | |
3959 | switch (c) { | |
3960 | case 'O': | |
3961 | out_fmt = optarg; | |
3962 | break; | |
3963 | case 'f': | |
3964 | fmt = optarg; | |
3965 | break; | |
3966 | case '?': | |
3967 | error_report("Try 'qemu-img --help' for more information."); | |
3968 | ret = -1; | |
3969 | goto out; | |
3970 | case 'h': | |
3971 | help(); | |
3972 | break; | |
3973 | case OPTION_IMAGE_OPTS: | |
3974 | image_opts = true; | |
3975 | break; | |
3976 | } | |
3977 | } | |
3978 | ||
3979 | for (i = optind; i < argc; i++) { | |
3980 | int j; | |
3981 | arg = g_strdup(argv[i]); | |
3982 | ||
3983 | tmp = strchr(arg, '='); | |
3984 | if (tmp == NULL) { | |
3985 | error_report("unrecognized operand %s", arg); | |
3986 | ret = -1; | |
3987 | goto out; | |
3988 | } | |
3989 | ||
3990 | *tmp++ = '\0'; | |
3991 | ||
3992 | for (j = 0; options[j].name != NULL; j++) { | |
3993 | if (!strcmp(arg, options[j].name)) { | |
3994 | break; | |
3995 | } | |
3996 | } | |
3997 | if (options[j].name == NULL) { | |
3998 | error_report("unrecognized operand %s", arg); | |
3999 | ret = -1; | |
4000 | goto out; | |
4001 | } | |
4002 | ||
4003 | if (options[j].f(tmp, &in, &out, &dd) != 0) { | |
4004 | ret = -1; | |
4005 | goto out; | |
4006 | } | |
4007 | dd.flags |= options[j].flag; | |
4008 | g_free(arg); | |
4009 | arg = NULL; | |
4010 | } | |
4011 | ||
4012 | if (!(dd.flags & C_IF && dd.flags & C_OF)) { | |
4013 | error_report("Must specify both input and output files"); | |
4014 | ret = -1; | |
4015 | goto out; | |
4016 | } | |
4017 | blk1 = img_open(image_opts, in.filename, fmt, 0, false, false); | |
4018 | ||
4019 | if (!blk1) { | |
4020 | ret = -1; | |
4021 | goto out; | |
4022 | } | |
4023 | ||
4024 | drv = bdrv_find_format(out_fmt); | |
4025 | if (!drv) { | |
4026 | error_report("Unknown file format"); | |
4027 | ret = -1; | |
4028 | goto out; | |
4029 | } | |
4030 | proto_drv = bdrv_find_protocol(out.filename, true, &local_err); | |
4031 | ||
4032 | if (!proto_drv) { | |
4033 | error_report_err(local_err); | |
4034 | ret = -1; | |
4035 | goto out; | |
4036 | } | |
4037 | if (!drv->create_opts) { | |
4038 | error_report("Format driver '%s' does not support image creation", | |
4039 | drv->format_name); | |
4040 | ret = -1; | |
4041 | goto out; | |
4042 | } | |
4043 | if (!proto_drv->create_opts) { | |
4044 | error_report("Protocol driver '%s' does not support image creation", | |
4045 | proto_drv->format_name); | |
4046 | ret = -1; | |
4047 | goto out; | |
4048 | } | |
4049 | create_opts = qemu_opts_append(create_opts, drv->create_opts); | |
4050 | create_opts = qemu_opts_append(create_opts, proto_drv->create_opts); | |
4051 | ||
4052 | opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); | |
4053 | ||
4054 | size = blk_getlength(blk1); | |
4055 | if (size < 0) { | |
4056 | error_report("Failed to get size for '%s'", in.filename); | |
4057 | ret = -1; | |
4058 | goto out; | |
4059 | } | |
4060 | ||
4061 | if (dd.flags & C_COUNT && dd.count <= INT64_MAX / in.bsz && | |
4062 | dd.count * in.bsz < size) { | |
4063 | size = dd.count * in.bsz; | |
4064 | } | |
4065 | ||
f7c15533 RS |
4066 | /* Overflow means the specified offset is beyond input image's size */ |
4067 | if (dd.flags & C_SKIP && (in.offset > INT64_MAX / in.bsz || | |
4068 | size < in.bsz * in.offset)) { | |
4069 | qemu_opt_set_number(opts, BLOCK_OPT_SIZE, 0, &error_abort); | |
4070 | } else { | |
4071 | qemu_opt_set_number(opts, BLOCK_OPT_SIZE, | |
4072 | size - in.bsz * in.offset, &error_abort); | |
4073 | } | |
86ce1f6e RS |
4074 | |
4075 | ret = bdrv_create(drv, out.filename, opts, &local_err); | |
4076 | if (ret < 0) { | |
4077 | error_reportf_err(local_err, | |
4078 | "%s: error while creating output image: ", | |
4079 | out.filename); | |
4080 | ret = -1; | |
4081 | goto out; | |
4082 | } | |
4083 | ||
4084 | blk2 = img_open(image_opts, out.filename, out_fmt, BDRV_O_RDWR, | |
4085 | false, false); | |
4086 | ||
4087 | if (!blk2) { | |
4088 | ret = -1; | |
4089 | goto out; | |
4090 | } | |
4091 | ||
f7c15533 RS |
4092 | if (dd.flags & C_SKIP && (in.offset > INT64_MAX / in.bsz || |
4093 | size < in.offset * in.bsz)) { | |
4094 | /* We give a warning if the skip option is bigger than the input | |
4095 | * size and create an empty output disk image (i.e. like dd(1)). | |
4096 | */ | |
4097 | error_report("%s: cannot skip to specified offset", in.filename); | |
4098 | in_pos = size; | |
4099 | } else { | |
4100 | in_pos = in.offset * in.bsz; | |
4101 | } | |
4102 | ||
86ce1f6e RS |
4103 | in.buf = g_new(uint8_t, in.bsz); |
4104 | ||
f7c15533 | 4105 | for (out_pos = 0; in_pos < size; block_count++) { |
86ce1f6e RS |
4106 | int in_ret, out_ret; |
4107 | ||
4108 | if (in_pos + in.bsz > size) { | |
4109 | in_ret = blk_pread(blk1, in_pos, in.buf, size - in_pos); | |
4110 | } else { | |
4111 | in_ret = blk_pread(blk1, in_pos, in.buf, in.bsz); | |
4112 | } | |
4113 | if (in_ret < 0) { | |
4114 | error_report("error while reading from input image file: %s", | |
4115 | strerror(-in_ret)); | |
4116 | ret = -1; | |
4117 | goto out; | |
4118 | } | |
4119 | in_pos += in_ret; | |
4120 | ||
4121 | out_ret = blk_pwrite(blk2, out_pos, in.buf, in_ret, 0); | |
4122 | ||
4123 | if (out_ret < 0) { | |
4124 | error_report("error while writing to output image file: %s", | |
4125 | strerror(-out_ret)); | |
4126 | ret = -1; | |
4127 | goto out; | |
4128 | } | |
4129 | out_pos += out_ret; | |
4130 | } | |
4131 | ||
4132 | out: | |
4133 | g_free(arg); | |
4134 | qemu_opts_del(opts); | |
4135 | qemu_opts_free(create_opts); | |
4136 | blk_unref(blk1); | |
4137 | blk_unref(blk2); | |
4138 | g_free(in.filename); | |
4139 | g_free(out.filename); | |
4140 | g_free(in.buf); | |
4141 | g_free(out.buf); | |
4142 | ||
4143 | if (ret) { | |
b6133b8c KW |
4144 | return 1; |
4145 | } | |
4146 | return 0; | |
4147 | } | |
4148 | ||
4149 | ||
c227f099 | 4150 | static const img_cmd_t img_cmds[] = { |
153859be SB |
4151 | #define DEF(option, callback, arg_string) \ |
4152 | { option, callback }, | |
4153 | #include "qemu-img-cmds.h" | |
4154 | #undef DEF | |
4155 | #undef GEN_DOCS | |
4156 | { NULL, NULL, }, | |
4157 | }; | |
4158 | ||
ea2384d3 FB |
4159 | int main(int argc, char **argv) |
4160 | { | |
c227f099 | 4161 | const img_cmd_t *cmd; |
153859be | 4162 | const char *cmdname; |
2f78e491 | 4163 | Error *local_error = NULL; |
06a1e0c1 | 4164 | char *trace_file = NULL; |
7db1689c | 4165 | int c; |
7db1689c JC |
4166 | static const struct option long_options[] = { |
4167 | {"help", no_argument, 0, 'h'}, | |
10985131 | 4168 | {"version", no_argument, 0, 'V'}, |
06a1e0c1 | 4169 | {"trace", required_argument, NULL, 'T'}, |
7db1689c JC |
4170 | {0, 0, 0, 0} |
4171 | }; | |
ea2384d3 | 4172 | |
526eda14 MK |
4173 | #ifdef CONFIG_POSIX |
4174 | signal(SIGPIPE, SIG_IGN); | |
4175 | #endif | |
4176 | ||
fe4db84d | 4177 | module_call_init(MODULE_INIT_TRACE); |
53f76e58 | 4178 | error_set_progname(argv[0]); |
10f5bff6 | 4179 | qemu_init_exec_dir(argv[0]); |
53f76e58 | 4180 | |
2f78e491 | 4181 | if (qemu_init_main_loop(&local_error)) { |
565f65d2 | 4182 | error_report_err(local_error); |
2f78e491 CN |
4183 | exit(EXIT_FAILURE); |
4184 | } | |
4185 | ||
e8f2d272 | 4186 | qcrypto_init(&error_fatal); |
c2297088 | 4187 | |
064097d9 | 4188 | module_call_init(MODULE_INIT_QOM); |
ea2384d3 | 4189 | bdrv_init(); |
ac1307ab FZ |
4190 | if (argc < 2) { |
4191 | error_exit("Not enough arguments"); | |
4192 | } | |
153859be | 4193 | |
3babeb15 | 4194 | qemu_add_opts(&qemu_object_opts); |
eb769f74 | 4195 | qemu_add_opts(&qemu_source_opts); |
06a1e0c1 | 4196 | qemu_add_opts(&qemu_trace_opts); |
3babeb15 | 4197 | |
06a1e0c1 | 4198 | while ((c = getopt_long(argc, argv, "+hVT:", long_options, NULL)) != -1) { |
10985131 DL |
4199 | switch (c) { |
4200 | case 'h': | |
4201 | help(); | |
4202 | return 0; | |
4203 | case 'V': | |
4204 | printf(QEMU_IMG_VERSION); | |
4205 | return 0; | |
06a1e0c1 DL |
4206 | case 'T': |
4207 | g_free(trace_file); | |
4208 | trace_file = trace_opt_parse(optarg); | |
4209 | break; | |
153859be | 4210 | } |
ea2384d3 | 4211 | } |
153859be | 4212 | |
10985131 | 4213 | cmdname = argv[optind]; |
7db1689c | 4214 | |
10985131 DL |
4215 | /* reset getopt_long scanning */ |
4216 | argc -= optind; | |
4217 | if (argc < 1) { | |
5f6979cb JC |
4218 | return 0; |
4219 | } | |
10985131 | 4220 | argv += optind; |
cfef6a45 | 4221 | optind = 0; |
10985131 | 4222 | |
06a1e0c1 DL |
4223 | if (!trace_init_backends()) { |
4224 | exit(1); | |
4225 | } | |
4226 | trace_init_file(trace_file); | |
4227 | qemu_set_log(LOG_TRACE); | |
4228 | ||
10985131 DL |
4229 | /* find the command */ |
4230 | for (cmd = img_cmds; cmd->name != NULL; cmd++) { | |
4231 | if (!strcmp(cmdname, cmd->name)) { | |
4232 | return cmd->handler(argc, argv); | |
4233 | } | |
4234 | } | |
7db1689c | 4235 | |
153859be | 4236 | /* not found */ |
ac1307ab | 4237 | error_exit("Command not found: %s", cmdname); |
ea2384d3 | 4238 | } |