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Commit | Line | Data |
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ea2384d3 | 1 | /* |
fb43f4dd | 2 | * QEMU disk image utility |
5fafdf24 | 3 | * |
68d0f70e | 4 | * Copyright (c) 2003-2008 Fabrice Bellard |
5fafdf24 | 5 | * |
ea2384d3 FB |
6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
7 | * of this software and associated documentation files (the "Software"), to deal | |
8 | * in the Software without restriction, including without limitation the rights | |
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
10 | * copies of the Software, and to permit persons to whom the Software is | |
11 | * furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
22 | * THE SOFTWARE. | |
23 | */ | |
80c71a24 | 24 | #include "qemu/osdep.h" |
67a1de0d | 25 | #include "qemu-version.h" |
da34e65c | 26 | #include "qapi/error.h" |
c054b3fd BC |
27 | #include "qapi-visit.h" |
28 | #include "qapi/qmp-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 \ |
5f6979cb JC |
47 | ", Copyright (c) 2004-2008 Fabrice Bellard\n" |
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" | |
169 | " '-s' run in Strict mode - fail on different image size or sector allocation\n"; | |
e00291c0 PB |
170 | |
171 | printf("%s\nSupported formats:", help_msg); | |
00c6d403 | 172 | bdrv_iterate_format(format_print, NULL); |
ea2384d3 | 173 | printf("\n"); |
ac1307ab | 174 | exit(EXIT_SUCCESS); |
ea2384d3 FB |
175 | } |
176 | ||
3babeb15 DB |
177 | static QemuOptsList qemu_object_opts = { |
178 | .name = "object", | |
179 | .implied_opt_name = "qom-type", | |
180 | .head = QTAILQ_HEAD_INITIALIZER(qemu_object_opts.head), | |
181 | .desc = { | |
182 | { } | |
183 | }, | |
184 | }; | |
185 | ||
eb769f74 DB |
186 | static QemuOptsList qemu_source_opts = { |
187 | .name = "source", | |
188 | .implied_opt_name = "file", | |
189 | .head = QTAILQ_HEAD_INITIALIZER(qemu_source_opts.head), | |
190 | .desc = { | |
191 | { } | |
192 | }, | |
193 | }; | |
194 | ||
7c30f657 | 195 | static int GCC_FMT_ATTR(2, 3) qprintf(bool quiet, const char *fmt, ...) |
f382d43a MR |
196 | { |
197 | int ret = 0; | |
198 | if (!quiet) { | |
199 | va_list args; | |
200 | va_start(args, fmt); | |
201 | ret = vprintf(fmt, args); | |
202 | va_end(args); | |
203 | } | |
204 | return ret; | |
205 | } | |
206 | ||
ea2384d3 | 207 | |
4ac8aacd JS |
208 | static int print_block_option_help(const char *filename, const char *fmt) |
209 | { | |
210 | BlockDriver *drv, *proto_drv; | |
83d0521a | 211 | QemuOptsList *create_opts = NULL; |
b65a5e12 | 212 | Error *local_err = NULL; |
4ac8aacd JS |
213 | |
214 | /* Find driver and parse its options */ | |
215 | drv = bdrv_find_format(fmt); | |
216 | if (!drv) { | |
15654a6d | 217 | error_report("Unknown file format '%s'", fmt); |
4ac8aacd JS |
218 | return 1; |
219 | } | |
220 | ||
c282e1fd | 221 | create_opts = qemu_opts_append(create_opts, drv->create_opts); |
a283cb6e | 222 | if (filename) { |
b65a5e12 | 223 | proto_drv = bdrv_find_protocol(filename, true, &local_err); |
a283cb6e | 224 | if (!proto_drv) { |
2867ce4a | 225 | error_report_err(local_err); |
83d0521a | 226 | qemu_opts_free(create_opts); |
a283cb6e KW |
227 | return 1; |
228 | } | |
c282e1fd | 229 | create_opts = qemu_opts_append(create_opts, proto_drv->create_opts); |
a283cb6e KW |
230 | } |
231 | ||
83d0521a CL |
232 | qemu_opts_print_help(create_opts); |
233 | qemu_opts_free(create_opts); | |
4ac8aacd JS |
234 | return 0; |
235 | } | |
236 | ||
eb769f74 DB |
237 | |
238 | static int img_open_password(BlockBackend *blk, const char *filename, | |
abb06c5a | 239 | int flags, bool quiet) |
75c23805 FB |
240 | { |
241 | BlockDriverState *bs; | |
75c23805 | 242 | char password[256]; |
eb769f74 DB |
243 | |
244 | bs = blk_bs(blk); | |
4ef130fc DB |
245 | if (bdrv_is_encrypted(bs) && bdrv_key_required(bs) && |
246 | !(flags & BDRV_O_NO_IO)) { | |
eb769f74 DB |
247 | qprintf(quiet, "Disk image '%s' is encrypted.\n", filename); |
248 | if (qemu_read_password(password, sizeof(password)) < 0) { | |
249 | error_report("No password given"); | |
250 | return -1; | |
251 | } | |
252 | if (bdrv_set_key(bs, password) < 0) { | |
253 | error_report("invalid password"); | |
254 | return -1; | |
255 | } | |
256 | } | |
257 | return 0; | |
258 | } | |
259 | ||
260 | ||
efaa7c4e | 261 | static BlockBackend *img_open_opts(const char *optstr, |
ce099547 | 262 | QemuOpts *opts, int flags, bool writethrough, |
abb06c5a | 263 | bool quiet) |
eb769f74 DB |
264 | { |
265 | QDict *options; | |
266 | Error *local_err = NULL; | |
267 | BlockBackend *blk; | |
268 | options = qemu_opts_to_qdict(opts, NULL); | |
efaa7c4e | 269 | blk = blk_new_open(NULL, NULL, options, flags, &local_err); |
eb769f74 | 270 | if (!blk) { |
143605a2 | 271 | error_reportf_err(local_err, "Could not open '%s': ", optstr); |
eb769f74 DB |
272 | return NULL; |
273 | } | |
ce099547 | 274 | blk_set_enable_write_cache(blk, !writethrough); |
eb769f74 | 275 | |
abb06c5a | 276 | if (img_open_password(blk, optstr, flags, quiet) < 0) { |
eb769f74 DB |
277 | blk_unref(blk); |
278 | return NULL; | |
279 | } | |
280 | return blk; | |
281 | } | |
282 | ||
efaa7c4e | 283 | static BlockBackend *img_open_file(const char *filename, |
eb769f74 | 284 | const char *fmt, int flags, |
ce099547 | 285 | bool writethrough, bool quiet) |
eb769f74 DB |
286 | { |
287 | BlockBackend *blk; | |
34b5d2c6 | 288 | Error *local_err = NULL; |
5bd31326 | 289 | QDict *options = NULL; |
ad717139 | 290 | |
75c23805 | 291 | if (fmt) { |
5bd31326 HR |
292 | options = qdict_new(); |
293 | qdict_put(options, "driver", qstring_from_str(fmt)); | |
75c23805 | 294 | } |
b9eaf9ec | 295 | |
efaa7c4e | 296 | blk = blk_new_open(filename, NULL, options, flags, &local_err); |
5bd31326 | 297 | if (!blk) { |
c29b77f9 | 298 | error_reportf_err(local_err, "Could not open '%s': ", filename); |
eb769f74 | 299 | return NULL; |
75c23805 | 300 | } |
ce099547 | 301 | blk_set_enable_write_cache(blk, !writethrough); |
b9eaf9ec | 302 | |
abb06c5a | 303 | if (img_open_password(blk, filename, flags, quiet) < 0) { |
eb769f74 DB |
304 | blk_unref(blk); |
305 | return NULL; | |
306 | } | |
307 | return blk; | |
308 | } | |
309 | ||
310 | ||
efaa7c4e | 311 | static BlockBackend *img_open(bool image_opts, |
eb769f74 | 312 | const char *filename, |
ce099547 | 313 | const char *fmt, int flags, bool writethrough, |
abb06c5a | 314 | bool quiet) |
eb769f74 DB |
315 | { |
316 | BlockBackend *blk; | |
317 | if (image_opts) { | |
318 | QemuOpts *opts; | |
319 | if (fmt) { | |
320 | error_report("--image-opts and --format are mutually exclusive"); | |
321 | return NULL; | |
322 | } | |
323 | opts = qemu_opts_parse_noisily(qemu_find_opts("source"), | |
324 | filename, true); | |
325 | if (!opts) { | |
326 | return NULL; | |
327 | } | |
ce099547 | 328 | blk = img_open_opts(filename, opts, flags, writethrough, quiet); |
eb769f74 | 329 | } else { |
ce099547 | 330 | blk = img_open_file(filename, fmt, flags, writethrough, quiet); |
75c23805 | 331 | } |
7e7d56d9 | 332 | return blk; |
75c23805 FB |
333 | } |
334 | ||
eb769f74 | 335 | |
83d0521a | 336 | static int add_old_style_options(const char *fmt, QemuOpts *opts, |
eec77d9e JS |
337 | const char *base_filename, |
338 | const char *base_fmt) | |
efa84d43 | 339 | { |
6750e795 MA |
340 | Error *err = NULL; |
341 | ||
efa84d43 | 342 | if (base_filename) { |
f43e47db | 343 | qemu_opt_set(opts, BLOCK_OPT_BACKING_FILE, base_filename, &err); |
6750e795 | 344 | if (err) { |
15654a6d JS |
345 | error_report("Backing file not supported for file format '%s'", |
346 | fmt); | |
6750e795 | 347 | error_free(err); |
c2abccec | 348 | return -1; |
efa84d43 KW |
349 | } |
350 | } | |
351 | if (base_fmt) { | |
f43e47db | 352 | qemu_opt_set(opts, BLOCK_OPT_BACKING_FMT, base_fmt, &err); |
6750e795 | 353 | if (err) { |
15654a6d JS |
354 | error_report("Backing file format not supported for file " |
355 | "format '%s'", fmt); | |
6750e795 | 356 | error_free(err); |
c2abccec | 357 | return -1; |
efa84d43 KW |
358 | } |
359 | } | |
c2abccec | 360 | return 0; |
efa84d43 KW |
361 | } |
362 | ||
ea2384d3 FB |
363 | static int img_create(int argc, char **argv) |
364 | { | |
a9300911 | 365 | int c; |
1da7cfbd | 366 | uint64_t img_size = -1; |
ea2384d3 | 367 | const char *fmt = "raw"; |
9230eaf6 | 368 | const char *base_fmt = NULL; |
ea2384d3 FB |
369 | const char *filename; |
370 | const char *base_filename = NULL; | |
9ea2ea71 | 371 | char *options = NULL; |
9b37525a | 372 | Error *local_err = NULL; |
f382d43a | 373 | bool quiet = false; |
3b46e624 | 374 | |
ea2384d3 | 375 | for(;;) { |
3babeb15 DB |
376 | static const struct option long_options[] = { |
377 | {"help", no_argument, 0, 'h'}, | |
378 | {"object", required_argument, 0, OPTION_OBJECT}, | |
379 | {0, 0, 0, 0} | |
380 | }; | |
381 | c = getopt_long(argc, argv, "F:b:f:he6o:q", | |
382 | long_options, NULL); | |
b8fb60da | 383 | if (c == -1) { |
ea2384d3 | 384 | break; |
b8fb60da | 385 | } |
ea2384d3 | 386 | switch(c) { |
ef87394c | 387 | case '?': |
ea2384d3 FB |
388 | case 'h': |
389 | help(); | |
390 | break; | |
9230eaf6 AL |
391 | case 'F': |
392 | base_fmt = optarg; | |
393 | break; | |
ea2384d3 FB |
394 | case 'b': |
395 | base_filename = optarg; | |
396 | break; | |
397 | case 'f': | |
398 | fmt = optarg; | |
399 | break; | |
400 | case 'e': | |
9d42e15d | 401 | error_report("option -e is deprecated, please use \'-o " |
eec77d9e | 402 | "encryption\' instead!"); |
77386bf6 | 403 | goto fail; |
d8871c5a | 404 | case '6': |
9d42e15d | 405 | error_report("option -6 is deprecated, please use \'-o " |
eec77d9e | 406 | "compat6\' instead!"); |
77386bf6 | 407 | goto fail; |
9ea2ea71 | 408 | case 'o': |
77386bf6 KW |
409 | if (!is_valid_option_list(optarg)) { |
410 | error_report("Invalid option list: %s", optarg); | |
411 | goto fail; | |
412 | } | |
413 | if (!options) { | |
414 | options = g_strdup(optarg); | |
415 | } else { | |
416 | char *old_options = options; | |
417 | options = g_strdup_printf("%s,%s", options, optarg); | |
418 | g_free(old_options); | |
419 | } | |
9ea2ea71 | 420 | break; |
f382d43a MR |
421 | case 'q': |
422 | quiet = true; | |
423 | break; | |
3babeb15 DB |
424 | case OPTION_OBJECT: { |
425 | QemuOpts *opts; | |
426 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
427 | optarg, true); | |
428 | if (!opts) { | |
429 | goto fail; | |
430 | } | |
431 | } break; | |
ea2384d3 FB |
432 | } |
433 | } | |
9230eaf6 | 434 | |
b50cbabc | 435 | /* Get the filename */ |
a283cb6e KW |
436 | filename = (optind < argc) ? argv[optind] : NULL; |
437 | if (options && has_help_option(options)) { | |
438 | g_free(options); | |
439 | return print_block_option_help(filename, fmt); | |
440 | } | |
441 | ||
b8fb60da | 442 | if (optind >= argc) { |
ac1307ab | 443 | error_exit("Expecting image file name"); |
b8fb60da | 444 | } |
a283cb6e | 445 | optind++; |
b50cbabc | 446 | |
3babeb15 DB |
447 | if (qemu_opts_foreach(&qemu_object_opts, |
448 | user_creatable_add_opts_foreach, | |
51b9b478 | 449 | NULL, NULL)) { |
3babeb15 DB |
450 | goto fail; |
451 | } | |
452 | ||
1da7cfbd JS |
453 | /* Get image size, if specified */ |
454 | if (optind < argc) { | |
70b4f4bb | 455 | int64_t sval; |
e36b3695 | 456 | char *end; |
4677bb40 MAL |
457 | sval = qemu_strtosz_suffix(argv[optind++], &end, |
458 | QEMU_STRTOSZ_DEFSUFFIX_B); | |
e36b3695 | 459 | if (sval < 0 || *end) { |
79443397 LG |
460 | if (sval == -ERANGE) { |
461 | error_report("Image size must be less than 8 EiB!"); | |
462 | } else { | |
463 | error_report("Invalid image size specified! You may use k, M, " | |
5e00984a KW |
464 | "G, T, P or E suffixes for "); |
465 | error_report("kilobytes, megabytes, gigabytes, terabytes, " | |
466 | "petabytes and exabytes."); | |
79443397 | 467 | } |
77386bf6 | 468 | goto fail; |
1da7cfbd JS |
469 | } |
470 | img_size = (uint64_t)sval; | |
471 | } | |
fc11eb26 | 472 | if (optind != argc) { |
ac1307ab | 473 | error_exit("Unexpected argument: %s", argv[optind]); |
fc11eb26 | 474 | } |
1da7cfbd | 475 | |
9b37525a | 476 | bdrv_img_create(filename, fmt, base_filename, base_fmt, |
61de4c68 | 477 | options, img_size, 0, &local_err, quiet); |
84d18f06 | 478 | if (local_err) { |
c29b77f9 | 479 | error_reportf_err(local_err, "%s: ", filename); |
77386bf6 | 480 | goto fail; |
c2abccec | 481 | } |
a9300911 | 482 | |
77386bf6 | 483 | g_free(options); |
ea2384d3 | 484 | return 0; |
77386bf6 KW |
485 | |
486 | fail: | |
487 | g_free(options); | |
488 | return 1; | |
ea2384d3 FB |
489 | } |
490 | ||
f382d43a | 491 | static void dump_json_image_check(ImageCheck *check, bool quiet) |
8599ea4c | 492 | { |
4399c438 | 493 | Error *local_err = NULL; |
8599ea4c FS |
494 | QString *str; |
495 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
496 | QObject *obj; | |
51e72bc1 EB |
497 | visit_type_ImageCheck(qmp_output_get_visitor(ov), NULL, &check, |
498 | &local_err); | |
8599ea4c FS |
499 | obj = qmp_output_get_qobject(ov); |
500 | str = qobject_to_json_pretty(obj); | |
501 | assert(str != NULL); | |
f382d43a | 502 | qprintf(quiet, "%s\n", qstring_get_str(str)); |
8599ea4c FS |
503 | qobject_decref(obj); |
504 | qmp_output_visitor_cleanup(ov); | |
505 | QDECREF(str); | |
506 | } | |
507 | ||
f382d43a | 508 | static void dump_human_image_check(ImageCheck *check, bool quiet) |
8599ea4c FS |
509 | { |
510 | if (!(check->corruptions || check->leaks || check->check_errors)) { | |
f382d43a | 511 | qprintf(quiet, "No errors were found on the image.\n"); |
8599ea4c FS |
512 | } else { |
513 | if (check->corruptions) { | |
f382d43a MR |
514 | qprintf(quiet, "\n%" PRId64 " errors were found on the image.\n" |
515 | "Data may be corrupted, or further writes to the image " | |
516 | "may corrupt it.\n", | |
517 | check->corruptions); | |
8599ea4c FS |
518 | } |
519 | ||
520 | if (check->leaks) { | |
f382d43a MR |
521 | qprintf(quiet, |
522 | "\n%" PRId64 " leaked clusters were found on the image.\n" | |
523 | "This means waste of disk space, but no harm to data.\n", | |
524 | check->leaks); | |
8599ea4c FS |
525 | } |
526 | ||
527 | if (check->check_errors) { | |
f382d43a MR |
528 | qprintf(quiet, |
529 | "\n%" PRId64 | |
530 | " internal errors have occurred during the check.\n", | |
531 | check->check_errors); | |
8599ea4c FS |
532 | } |
533 | } | |
534 | ||
535 | if (check->total_clusters != 0 && check->allocated_clusters != 0) { | |
f382d43a MR |
536 | qprintf(quiet, "%" PRId64 "/%" PRId64 " = %0.2f%% allocated, " |
537 | "%0.2f%% fragmented, %0.2f%% compressed clusters\n", | |
538 | check->allocated_clusters, check->total_clusters, | |
539 | check->allocated_clusters * 100.0 / check->total_clusters, | |
540 | check->fragmented_clusters * 100.0 / check->allocated_clusters, | |
541 | check->compressed_clusters * 100.0 / | |
542 | check->allocated_clusters); | |
8599ea4c FS |
543 | } |
544 | ||
545 | if (check->image_end_offset) { | |
f382d43a MR |
546 | qprintf(quiet, |
547 | "Image end offset: %" PRId64 "\n", check->image_end_offset); | |
8599ea4c FS |
548 | } |
549 | } | |
550 | ||
551 | static int collect_image_check(BlockDriverState *bs, | |
552 | ImageCheck *check, | |
553 | const char *filename, | |
554 | const char *fmt, | |
555 | int fix) | |
556 | { | |
557 | int ret; | |
558 | BdrvCheckResult result; | |
559 | ||
560 | ret = bdrv_check(bs, &result, fix); | |
561 | if (ret < 0) { | |
562 | return ret; | |
563 | } | |
564 | ||
565 | check->filename = g_strdup(filename); | |
566 | check->format = g_strdup(bdrv_get_format_name(bs)); | |
567 | check->check_errors = result.check_errors; | |
568 | check->corruptions = result.corruptions; | |
569 | check->has_corruptions = result.corruptions != 0; | |
570 | check->leaks = result.leaks; | |
571 | check->has_leaks = result.leaks != 0; | |
572 | check->corruptions_fixed = result.corruptions_fixed; | |
573 | check->has_corruptions_fixed = result.corruptions != 0; | |
574 | check->leaks_fixed = result.leaks_fixed; | |
575 | check->has_leaks_fixed = result.leaks != 0; | |
576 | check->image_end_offset = result.image_end_offset; | |
577 | check->has_image_end_offset = result.image_end_offset != 0; | |
578 | check->total_clusters = result.bfi.total_clusters; | |
579 | check->has_total_clusters = result.bfi.total_clusters != 0; | |
580 | check->allocated_clusters = result.bfi.allocated_clusters; | |
581 | check->has_allocated_clusters = result.bfi.allocated_clusters != 0; | |
582 | check->fragmented_clusters = result.bfi.fragmented_clusters; | |
583 | check->has_fragmented_clusters = result.bfi.fragmented_clusters != 0; | |
e6439d78 SH |
584 | check->compressed_clusters = result.bfi.compressed_clusters; |
585 | check->has_compressed_clusters = result.bfi.compressed_clusters != 0; | |
8599ea4c FS |
586 | |
587 | return 0; | |
588 | } | |
589 | ||
e076f338 KW |
590 | /* |
591 | * Checks an image for consistency. Exit codes: | |
592 | * | |
d6635c4d HR |
593 | * 0 - Check completed, image is good |
594 | * 1 - Check not completed because of internal errors | |
595 | * 2 - Check completed, image is corrupted | |
596 | * 3 - Check completed, image has leaked clusters, but is good otherwise | |
597 | * 63 - Checks are not supported by the image format | |
e076f338 | 598 | */ |
1585969c AL |
599 | static int img_check(int argc, char **argv) |
600 | { | |
601 | int c, ret; | |
8599ea4c | 602 | OutputFormat output_format = OFORMAT_HUMAN; |
40055951 | 603 | const char *filename, *fmt, *output, *cache; |
26f54e9a | 604 | BlockBackend *blk; |
1585969c | 605 | BlockDriverState *bs; |
4534ff54 | 606 | int fix = 0; |
ce099547 KW |
607 | int flags = BDRV_O_CHECK; |
608 | bool writethrough; | |
7e7d56d9 | 609 | ImageCheck *check; |
f382d43a | 610 | bool quiet = false; |
eb769f74 | 611 | bool image_opts = false; |
1585969c AL |
612 | |
613 | fmt = NULL; | |
8599ea4c | 614 | output = NULL; |
40055951 | 615 | cache = BDRV_DEFAULT_CACHE; |
ce099547 | 616 | |
1585969c | 617 | for(;;) { |
8599ea4c FS |
618 | int option_index = 0; |
619 | static const struct option long_options[] = { | |
620 | {"help", no_argument, 0, 'h'}, | |
621 | {"format", required_argument, 0, 'f'}, | |
4fd6a984 | 622 | {"repair", required_argument, 0, 'r'}, |
8599ea4c | 623 | {"output", required_argument, 0, OPTION_OUTPUT}, |
3babeb15 | 624 | {"object", required_argument, 0, OPTION_OBJECT}, |
eb769f74 | 625 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
8599ea4c FS |
626 | {0, 0, 0, 0} |
627 | }; | |
40055951 | 628 | c = getopt_long(argc, argv, "hf:r:T:q", |
8599ea4c | 629 | long_options, &option_index); |
b8fb60da | 630 | if (c == -1) { |
1585969c | 631 | break; |
b8fb60da | 632 | } |
1585969c | 633 | switch(c) { |
ef87394c | 634 | case '?': |
1585969c AL |
635 | case 'h': |
636 | help(); | |
637 | break; | |
638 | case 'f': | |
639 | fmt = optarg; | |
640 | break; | |
4534ff54 KW |
641 | case 'r': |
642 | flags |= BDRV_O_RDWR; | |
643 | ||
644 | if (!strcmp(optarg, "leaks")) { | |
645 | fix = BDRV_FIX_LEAKS; | |
646 | } else if (!strcmp(optarg, "all")) { | |
647 | fix = BDRV_FIX_LEAKS | BDRV_FIX_ERRORS; | |
648 | } else { | |
ac1307ab FZ |
649 | error_exit("Unknown option value for -r " |
650 | "(expecting 'leaks' or 'all'): %s", optarg); | |
4534ff54 KW |
651 | } |
652 | break; | |
8599ea4c FS |
653 | case OPTION_OUTPUT: |
654 | output = optarg; | |
655 | break; | |
40055951 HR |
656 | case 'T': |
657 | cache = optarg; | |
658 | break; | |
f382d43a MR |
659 | case 'q': |
660 | quiet = true; | |
661 | break; | |
3babeb15 DB |
662 | case OPTION_OBJECT: { |
663 | QemuOpts *opts; | |
664 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
665 | optarg, true); | |
666 | if (!opts) { | |
667 | return 1; | |
668 | } | |
669 | } break; | |
eb769f74 DB |
670 | case OPTION_IMAGE_OPTS: |
671 | image_opts = true; | |
672 | break; | |
1585969c AL |
673 | } |
674 | } | |
fc11eb26 | 675 | if (optind != argc - 1) { |
ac1307ab | 676 | error_exit("Expecting one image file name"); |
b8fb60da | 677 | } |
1585969c AL |
678 | filename = argv[optind++]; |
679 | ||
8599ea4c FS |
680 | if (output && !strcmp(output, "json")) { |
681 | output_format = OFORMAT_JSON; | |
682 | } else if (output && !strcmp(output, "human")) { | |
683 | output_format = OFORMAT_HUMAN; | |
684 | } else if (output) { | |
685 | error_report("--output must be used with human or json as argument."); | |
686 | return 1; | |
687 | } | |
688 | ||
3babeb15 DB |
689 | if (qemu_opts_foreach(&qemu_object_opts, |
690 | user_creatable_add_opts_foreach, | |
51b9b478 | 691 | NULL, NULL)) { |
3babeb15 DB |
692 | return 1; |
693 | } | |
694 | ||
ce099547 | 695 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); |
40055951 HR |
696 | if (ret < 0) { |
697 | error_report("Invalid source cache option: %s", cache); | |
698 | return 1; | |
699 | } | |
700 | ||
ce099547 | 701 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet); |
7e7d56d9 MA |
702 | if (!blk) { |
703 | return 1; | |
c2abccec | 704 | } |
7e7d56d9 | 705 | bs = blk_bs(blk); |
8599ea4c FS |
706 | |
707 | check = g_new0(ImageCheck, 1); | |
708 | ret = collect_image_check(bs, check, filename, fmt, fix); | |
e076f338 KW |
709 | |
710 | if (ret == -ENOTSUP) { | |
55d492d7 | 711 | error_report("This image format does not support checks"); |
fefddf95 | 712 | ret = 63; |
8599ea4c | 713 | goto fail; |
e076f338 KW |
714 | } |
715 | ||
8599ea4c FS |
716 | if (check->corruptions_fixed || check->leaks_fixed) { |
717 | int corruptions_fixed, leaks_fixed; | |
ccf34716 | 718 | |
8599ea4c FS |
719 | leaks_fixed = check->leaks_fixed; |
720 | corruptions_fixed = check->corruptions_fixed; | |
e076f338 | 721 | |
8599ea4c | 722 | if (output_format == OFORMAT_HUMAN) { |
f382d43a MR |
723 | qprintf(quiet, |
724 | "The following inconsistencies were found and repaired:\n\n" | |
725 | " %" PRId64 " leaked clusters\n" | |
726 | " %" PRId64 " corruptions\n\n" | |
727 | "Double checking the fixed image now...\n", | |
728 | check->leaks_fixed, | |
729 | check->corruptions_fixed); | |
e076f338 KW |
730 | } |
731 | ||
8599ea4c | 732 | ret = collect_image_check(bs, check, filename, fmt, 0); |
1585969c | 733 | |
8599ea4c FS |
734 | check->leaks_fixed = leaks_fixed; |
735 | check->corruptions_fixed = corruptions_fixed; | |
f8111c24 DXW |
736 | } |
737 | ||
832390a5 HR |
738 | if (!ret) { |
739 | switch (output_format) { | |
740 | case OFORMAT_HUMAN: | |
741 | dump_human_image_check(check, quiet); | |
742 | break; | |
743 | case OFORMAT_JSON: | |
744 | dump_json_image_check(check, quiet); | |
745 | break; | |
746 | } | |
c6bb9ad1 FS |
747 | } |
748 | ||
8599ea4c | 749 | if (ret || check->check_errors) { |
832390a5 HR |
750 | if (ret) { |
751 | error_report("Check failed: %s", strerror(-ret)); | |
752 | } else { | |
753 | error_report("Check failed"); | |
754 | } | |
8599ea4c FS |
755 | ret = 1; |
756 | goto fail; | |
c2abccec | 757 | } |
e076f338 | 758 | |
8599ea4c FS |
759 | if (check->corruptions) { |
760 | ret = 2; | |
761 | } else if (check->leaks) { | |
762 | ret = 3; | |
e076f338 | 763 | } else { |
8599ea4c | 764 | ret = 0; |
e076f338 | 765 | } |
8599ea4c FS |
766 | |
767 | fail: | |
768 | qapi_free_ImageCheck(check); | |
26f54e9a | 769 | blk_unref(blk); |
8599ea4c | 770 | return ret; |
1585969c AL |
771 | } |
772 | ||
d4a3238a HR |
773 | typedef struct CommonBlockJobCBInfo { |
774 | BlockDriverState *bs; | |
775 | Error **errp; | |
776 | } CommonBlockJobCBInfo; | |
777 | ||
778 | static void common_block_job_cb(void *opaque, int ret) | |
779 | { | |
780 | CommonBlockJobCBInfo *cbi = opaque; | |
781 | ||
782 | if (ret < 0) { | |
783 | error_setg_errno(cbi->errp, -ret, "Block job failed"); | |
784 | } | |
d4a3238a HR |
785 | } |
786 | ||
787 | static void run_block_job(BlockJob *job, Error **errp) | |
788 | { | |
b75536c9 | 789 | AioContext *aio_context = blk_get_aio_context(job->blk); |
d4a3238a HR |
790 | |
791 | do { | |
792 | aio_poll(aio_context, true); | |
62547b8a JS |
793 | qemu_progress_print(job->len ? |
794 | ((float)job->offset / job->len * 100.f) : 0.0f, 0); | |
d4a3238a HR |
795 | } while (!job->ready); |
796 | ||
797 | block_job_complete_sync(job, errp); | |
687fa1d8 HR |
798 | |
799 | /* A block job may finish instantaneously without publishing any progress, | |
800 | * so just signal completion here */ | |
801 | qemu_progress_print(100.f, 0); | |
d4a3238a HR |
802 | } |
803 | ||
ea2384d3 FB |
804 | static int img_commit(int argc, char **argv) |
805 | { | |
661a0f71 | 806 | int c, ret, flags; |
1b22bffd | 807 | const char *filename, *fmt, *cache, *base; |
26f54e9a | 808 | BlockBackend *blk; |
d4a3238a | 809 | BlockDriverState *bs, *base_bs; |
687fa1d8 | 810 | bool progress = false, quiet = false, drop = false; |
ce099547 | 811 | bool writethrough; |
d4a3238a HR |
812 | Error *local_err = NULL; |
813 | CommonBlockJobCBInfo cbi; | |
eb769f74 | 814 | bool image_opts = false; |
ea2384d3 FB |
815 | |
816 | fmt = NULL; | |
661a0f71 | 817 | cache = BDRV_DEFAULT_CACHE; |
1b22bffd | 818 | base = NULL; |
ea2384d3 | 819 | for(;;) { |
3babeb15 DB |
820 | static const struct option long_options[] = { |
821 | {"help", no_argument, 0, 'h'}, | |
822 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 823 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
824 | {0, 0, 0, 0} |
825 | }; | |
826 | c = getopt_long(argc, argv, "f:ht:b:dpq", | |
827 | long_options, NULL); | |
b8fb60da | 828 | if (c == -1) { |
ea2384d3 | 829 | break; |
b8fb60da | 830 | } |
ea2384d3 | 831 | switch(c) { |
ef87394c | 832 | case '?': |
ea2384d3 FB |
833 | case 'h': |
834 | help(); | |
835 | break; | |
836 | case 'f': | |
837 | fmt = optarg; | |
838 | break; | |
661a0f71 FS |
839 | case 't': |
840 | cache = optarg; | |
841 | break; | |
1b22bffd HR |
842 | case 'b': |
843 | base = optarg; | |
844 | /* -b implies -d */ | |
845 | drop = true; | |
846 | break; | |
9a86fe48 HR |
847 | case 'd': |
848 | drop = true; | |
849 | break; | |
687fa1d8 HR |
850 | case 'p': |
851 | progress = true; | |
852 | break; | |
f382d43a MR |
853 | case 'q': |
854 | quiet = true; | |
855 | break; | |
3babeb15 DB |
856 | case OPTION_OBJECT: { |
857 | QemuOpts *opts; | |
858 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
859 | optarg, true); | |
860 | if (!opts) { | |
861 | return 1; | |
862 | } | |
863 | } break; | |
eb769f74 DB |
864 | case OPTION_IMAGE_OPTS: |
865 | image_opts = true; | |
866 | break; | |
ea2384d3 FB |
867 | } |
868 | } | |
687fa1d8 HR |
869 | |
870 | /* Progress is not shown in Quiet mode */ | |
871 | if (quiet) { | |
872 | progress = false; | |
873 | } | |
874 | ||
fc11eb26 | 875 | if (optind != argc - 1) { |
ac1307ab | 876 | error_exit("Expecting one image file name"); |
b8fb60da | 877 | } |
ea2384d3 FB |
878 | filename = argv[optind++]; |
879 | ||
3babeb15 DB |
880 | if (qemu_opts_foreach(&qemu_object_opts, |
881 | user_creatable_add_opts_foreach, | |
51b9b478 | 882 | NULL, NULL)) { |
3babeb15 DB |
883 | return 1; |
884 | } | |
885 | ||
9a86fe48 | 886 | flags = BDRV_O_RDWR | BDRV_O_UNMAP; |
ce099547 | 887 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); |
661a0f71 FS |
888 | if (ret < 0) { |
889 | error_report("Invalid cache option: %s", cache); | |
a3981eb9 | 890 | return 1; |
661a0f71 FS |
891 | } |
892 | ||
ce099547 | 893 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet); |
7e7d56d9 MA |
894 | if (!blk) { |
895 | return 1; | |
c2abccec | 896 | } |
7e7d56d9 MA |
897 | bs = blk_bs(blk); |
898 | ||
687fa1d8 HR |
899 | qemu_progress_init(progress, 1.f); |
900 | qemu_progress_print(0.f, 100); | |
901 | ||
1b22bffd HR |
902 | if (base) { |
903 | base_bs = bdrv_find_backing_image(bs, base); | |
904 | if (!base_bs) { | |
c6bd8c70 | 905 | error_setg(&local_err, QERR_BASE_NOT_FOUND, base); |
1b22bffd HR |
906 | goto done; |
907 | } | |
908 | } else { | |
909 | /* This is different from QMP, which by default uses the deepest file in | |
910 | * the backing chain (i.e., the very base); however, the traditional | |
911 | * behavior of qemu-img commit is using the immediate backing file. */ | |
760e0063 | 912 | base_bs = backing_bs(bs); |
1b22bffd HR |
913 | if (!base_bs) { |
914 | error_setg(&local_err, "Image does not have a backing file"); | |
915 | goto done; | |
916 | } | |
d4a3238a HR |
917 | } |
918 | ||
919 | cbi = (CommonBlockJobCBInfo){ | |
920 | .errp = &local_err, | |
921 | .bs = bs, | |
922 | }; | |
923 | ||
924 | commit_active_start(bs, base_bs, 0, BLOCKDEV_ON_ERROR_REPORT, | |
925 | common_block_job_cb, &cbi, &local_err); | |
926 | if (local_err) { | |
927 | goto done; | |
ea2384d3 FB |
928 | } |
929 | ||
3f09bfbc KW |
930 | /* When the block job completes, the BlockBackend reference will point to |
931 | * the old backing file. In order to avoid that the top image is already | |
932 | * deleted, so we can still empty it afterwards, increment the reference | |
933 | * counter here preemptively. */ | |
9a86fe48 | 934 | if (!drop) { |
3f09bfbc | 935 | bdrv_ref(bs); |
9a86fe48 HR |
936 | } |
937 | ||
d4a3238a | 938 | run_block_job(bs->job, &local_err); |
9a86fe48 HR |
939 | if (local_err) { |
940 | goto unref_backing; | |
941 | } | |
942 | ||
3f09bfbc KW |
943 | if (!drop && bs->drv->bdrv_make_empty) { |
944 | ret = bs->drv->bdrv_make_empty(bs); | |
9a86fe48 HR |
945 | if (ret) { |
946 | error_setg_errno(&local_err, -ret, "Could not empty %s", | |
947 | filename); | |
948 | goto unref_backing; | |
949 | } | |
950 | } | |
951 | ||
952 | unref_backing: | |
953 | if (!drop) { | |
3f09bfbc | 954 | bdrv_unref(bs); |
9a86fe48 | 955 | } |
d4a3238a HR |
956 | |
957 | done: | |
687fa1d8 HR |
958 | qemu_progress_end(); |
959 | ||
26f54e9a | 960 | blk_unref(blk); |
d4a3238a HR |
961 | |
962 | if (local_err) { | |
6936f299 | 963 | error_report_err(local_err); |
c2abccec MK |
964 | return 1; |
965 | } | |
d4a3238a HR |
966 | |
967 | qprintf(quiet, "Image committed.\n"); | |
ea2384d3 FB |
968 | return 0; |
969 | } | |
970 | ||
f58c7b35 TS |
971 | /* |
972 | * Returns true iff the first sector pointed to by 'buf' contains at least | |
973 | * a non-NUL byte. | |
974 | * | |
975 | * 'pnum' is set to the number of sectors (including and immediately following | |
976 | * the first one) that are known to be in the same allocated/unallocated state. | |
977 | */ | |
ea2384d3 FB |
978 | static int is_allocated_sectors(const uint8_t *buf, int n, int *pnum) |
979 | { | |
1a6d39fd SH |
980 | bool is_zero; |
981 | int i; | |
ea2384d3 FB |
982 | |
983 | if (n <= 0) { | |
984 | *pnum = 0; | |
985 | return 0; | |
986 | } | |
1a6d39fd | 987 | is_zero = buffer_is_zero(buf, 512); |
ea2384d3 FB |
988 | for(i = 1; i < n; i++) { |
989 | buf += 512; | |
1a6d39fd | 990 | if (is_zero != buffer_is_zero(buf, 512)) { |
ea2384d3 | 991 | break; |
1a6d39fd | 992 | } |
ea2384d3 FB |
993 | } |
994 | *pnum = i; | |
1a6d39fd | 995 | return !is_zero; |
ea2384d3 FB |
996 | } |
997 | ||
a22f123c KW |
998 | /* |
999 | * Like is_allocated_sectors, but if the buffer starts with a used sector, | |
1000 | * up to 'min' consecutive sectors containing zeros are ignored. This avoids | |
1001 | * breaking up write requests for only small sparse areas. | |
1002 | */ | |
1003 | static int is_allocated_sectors_min(const uint8_t *buf, int n, int *pnum, | |
1004 | int min) | |
1005 | { | |
1006 | int ret; | |
1007 | int num_checked, num_used; | |
1008 | ||
1009 | if (n < min) { | |
1010 | min = n; | |
1011 | } | |
1012 | ||
1013 | ret = is_allocated_sectors(buf, n, pnum); | |
1014 | if (!ret) { | |
1015 | return ret; | |
1016 | } | |
1017 | ||
1018 | num_used = *pnum; | |
1019 | buf += BDRV_SECTOR_SIZE * *pnum; | |
1020 | n -= *pnum; | |
1021 | num_checked = num_used; | |
1022 | ||
1023 | while (n > 0) { | |
1024 | ret = is_allocated_sectors(buf, n, pnum); | |
1025 | ||
1026 | buf += BDRV_SECTOR_SIZE * *pnum; | |
1027 | n -= *pnum; | |
1028 | num_checked += *pnum; | |
1029 | if (ret) { | |
1030 | num_used = num_checked; | |
1031 | } else if (*pnum >= min) { | |
1032 | break; | |
1033 | } | |
1034 | } | |
1035 | ||
1036 | *pnum = num_used; | |
1037 | return 1; | |
1038 | } | |
1039 | ||
3e85c6fd KW |
1040 | /* |
1041 | * Compares two buffers sector by sector. Returns 0 if the first sector of both | |
1042 | * buffers matches, non-zero otherwise. | |
1043 | * | |
1044 | * pnum is set to the number of sectors (including and immediately following | |
1045 | * the first one) that are known to have the same comparison result | |
1046 | */ | |
1047 | static int compare_sectors(const uint8_t *buf1, const uint8_t *buf2, int n, | |
1048 | int *pnum) | |
1049 | { | |
8c1ac475 RK |
1050 | bool res; |
1051 | int i; | |
3e85c6fd KW |
1052 | |
1053 | if (n <= 0) { | |
1054 | *pnum = 0; | |
1055 | return 0; | |
1056 | } | |
1057 | ||
1058 | res = !!memcmp(buf1, buf2, 512); | |
1059 | for(i = 1; i < n; i++) { | |
1060 | buf1 += 512; | |
1061 | buf2 += 512; | |
1062 | ||
1063 | if (!!memcmp(buf1, buf2, 512) != res) { | |
1064 | break; | |
1065 | } | |
1066 | } | |
1067 | ||
1068 | *pnum = i; | |
1069 | return res; | |
1070 | } | |
1071 | ||
80ee15a6 | 1072 | #define IO_BUF_SIZE (2 * 1024 * 1024) |
ea2384d3 | 1073 | |
d14ed18c MR |
1074 | static int64_t sectors_to_bytes(int64_t sectors) |
1075 | { | |
1076 | return sectors << BDRV_SECTOR_BITS; | |
1077 | } | |
1078 | ||
1079 | static int64_t sectors_to_process(int64_t total, int64_t from) | |
1080 | { | |
1081 | return MIN(total - from, IO_BUF_SIZE >> BDRV_SECTOR_BITS); | |
1082 | } | |
1083 | ||
1084 | /* | |
1085 | * Check if passed sectors are empty (not allocated or contain only 0 bytes) | |
1086 | * | |
1087 | * Returns 0 in case sectors are filled with 0, 1 if sectors contain non-zero | |
1088 | * data and negative value on error. | |
1089 | * | |
f1d3cd79 | 1090 | * @param blk: BlockBackend for the image |
d14ed18c MR |
1091 | * @param sect_num: Number of first sector to check |
1092 | * @param sect_count: Number of sectors to check | |
1093 | * @param filename: Name of disk file we are checking (logging purpose) | |
1094 | * @param buffer: Allocated buffer for storing read data | |
1095 | * @param quiet: Flag for quiet mode | |
1096 | */ | |
f1d3cd79 | 1097 | static int check_empty_sectors(BlockBackend *blk, int64_t sect_num, |
d14ed18c MR |
1098 | int sect_count, const char *filename, |
1099 | uint8_t *buffer, bool quiet) | |
1100 | { | |
1101 | int pnum, ret = 0; | |
9166920a EB |
1102 | ret = blk_pread(blk, sect_num << BDRV_SECTOR_BITS, buffer, |
1103 | sect_count << BDRV_SECTOR_BITS); | |
d14ed18c MR |
1104 | if (ret < 0) { |
1105 | error_report("Error while reading offset %" PRId64 " of %s: %s", | |
1106 | sectors_to_bytes(sect_num), filename, strerror(-ret)); | |
1107 | return ret; | |
1108 | } | |
1109 | ret = is_allocated_sectors(buffer, sect_count, &pnum); | |
1110 | if (ret || pnum != sect_count) { | |
1111 | qprintf(quiet, "Content mismatch at offset %" PRId64 "!\n", | |
1112 | sectors_to_bytes(ret ? sect_num : sect_num + pnum)); | |
1113 | return 1; | |
1114 | } | |
1115 | ||
1116 | return 0; | |
1117 | } | |
1118 | ||
1119 | /* | |
1120 | * Compares two images. Exit codes: | |
1121 | * | |
1122 | * 0 - Images are identical | |
1123 | * 1 - Images differ | |
1124 | * >1 - Error occurred | |
1125 | */ | |
1126 | static int img_compare(int argc, char **argv) | |
1127 | { | |
40055951 | 1128 | const char *fmt1 = NULL, *fmt2 = NULL, *cache, *filename1, *filename2; |
26f54e9a | 1129 | BlockBackend *blk1, *blk2; |
d14ed18c MR |
1130 | BlockDriverState *bs1, *bs2; |
1131 | int64_t total_sectors1, total_sectors2; | |
1132 | uint8_t *buf1 = NULL, *buf2 = NULL; | |
1133 | int pnum1, pnum2; | |
1134 | int allocated1, allocated2; | |
1135 | int ret = 0; /* return value - 0 Ident, 1 Different, >1 Error */ | |
1136 | bool progress = false, quiet = false, strict = false; | |
40055951 | 1137 | int flags; |
ce099547 | 1138 | bool writethrough; |
d14ed18c MR |
1139 | int64_t total_sectors; |
1140 | int64_t sector_num = 0; | |
1141 | int64_t nb_sectors; | |
1142 | int c, pnum; | |
d14ed18c | 1143 | uint64_t progress_base; |
eb769f74 | 1144 | bool image_opts = false; |
d14ed18c | 1145 | |
40055951 | 1146 | cache = BDRV_DEFAULT_CACHE; |
d14ed18c | 1147 | for (;;) { |
3babeb15 DB |
1148 | static const struct option long_options[] = { |
1149 | {"help", no_argument, 0, 'h'}, | |
1150 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 1151 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
1152 | {0, 0, 0, 0} |
1153 | }; | |
1154 | c = getopt_long(argc, argv, "hf:F:T:pqs", | |
1155 | long_options, NULL); | |
d14ed18c MR |
1156 | if (c == -1) { |
1157 | break; | |
1158 | } | |
1159 | switch (c) { | |
1160 | case '?': | |
1161 | case 'h': | |
1162 | help(); | |
1163 | break; | |
1164 | case 'f': | |
1165 | fmt1 = optarg; | |
1166 | break; | |
1167 | case 'F': | |
1168 | fmt2 = optarg; | |
1169 | break; | |
40055951 HR |
1170 | case 'T': |
1171 | cache = optarg; | |
1172 | break; | |
d14ed18c MR |
1173 | case 'p': |
1174 | progress = true; | |
1175 | break; | |
1176 | case 'q': | |
1177 | quiet = true; | |
1178 | break; | |
1179 | case 's': | |
1180 | strict = true; | |
1181 | break; | |
3babeb15 DB |
1182 | case OPTION_OBJECT: { |
1183 | QemuOpts *opts; | |
1184 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
1185 | optarg, true); | |
1186 | if (!opts) { | |
1187 | ret = 2; | |
1188 | goto out4; | |
1189 | } | |
1190 | } break; | |
eb769f74 DB |
1191 | case OPTION_IMAGE_OPTS: |
1192 | image_opts = true; | |
1193 | break; | |
d14ed18c MR |
1194 | } |
1195 | } | |
1196 | ||
1197 | /* Progress is not shown in Quiet mode */ | |
1198 | if (quiet) { | |
1199 | progress = false; | |
1200 | } | |
1201 | ||
1202 | ||
fc11eb26 | 1203 | if (optind != argc - 2) { |
ac1307ab | 1204 | error_exit("Expecting two image file names"); |
d14ed18c MR |
1205 | } |
1206 | filename1 = argv[optind++]; | |
1207 | filename2 = argv[optind++]; | |
1208 | ||
3babeb15 DB |
1209 | if (qemu_opts_foreach(&qemu_object_opts, |
1210 | user_creatable_add_opts_foreach, | |
51b9b478 | 1211 | NULL, NULL)) { |
3babeb15 DB |
1212 | ret = 2; |
1213 | goto out4; | |
1214 | } | |
1215 | ||
cbda016d SH |
1216 | /* Initialize before goto out */ |
1217 | qemu_progress_init(progress, 2.0); | |
1218 | ||
ce099547 KW |
1219 | flags = 0; |
1220 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); | |
40055951 HR |
1221 | if (ret < 0) { |
1222 | error_report("Invalid source cache option: %s", cache); | |
1223 | ret = 2; | |
1224 | goto out3; | |
1225 | } | |
1226 | ||
ce099547 | 1227 | blk1 = img_open(image_opts, filename1, fmt1, flags, writethrough, quiet); |
7e7d56d9 | 1228 | if (!blk1) { |
d14ed18c | 1229 | ret = 2; |
7e7d56d9 | 1230 | goto out3; |
d14ed18c MR |
1231 | } |
1232 | ||
ce099547 | 1233 | blk2 = img_open(image_opts, filename2, fmt2, flags, writethrough, quiet); |
7e7d56d9 | 1234 | if (!blk2) { |
d14ed18c | 1235 | ret = 2; |
7e7d56d9 | 1236 | goto out2; |
d14ed18c | 1237 | } |
eb769f74 | 1238 | bs1 = blk_bs(blk1); |
7e7d56d9 | 1239 | bs2 = blk_bs(blk2); |
d14ed18c | 1240 | |
f1d3cd79 HR |
1241 | buf1 = blk_blockalign(blk1, IO_BUF_SIZE); |
1242 | buf2 = blk_blockalign(blk2, IO_BUF_SIZE); | |
1243 | total_sectors1 = blk_nb_sectors(blk1); | |
52bf1e72 MA |
1244 | if (total_sectors1 < 0) { |
1245 | error_report("Can't get size of %s: %s", | |
1246 | filename1, strerror(-total_sectors1)); | |
1247 | ret = 4; | |
1248 | goto out; | |
1249 | } | |
f1d3cd79 | 1250 | total_sectors2 = blk_nb_sectors(blk2); |
52bf1e72 MA |
1251 | if (total_sectors2 < 0) { |
1252 | error_report("Can't get size of %s: %s", | |
1253 | filename2, strerror(-total_sectors2)); | |
1254 | ret = 4; | |
1255 | goto out; | |
1256 | } | |
d14ed18c MR |
1257 | total_sectors = MIN(total_sectors1, total_sectors2); |
1258 | progress_base = MAX(total_sectors1, total_sectors2); | |
1259 | ||
1260 | qemu_progress_print(0, 100); | |
1261 | ||
1262 | if (strict && total_sectors1 != total_sectors2) { | |
1263 | ret = 1; | |
1264 | qprintf(quiet, "Strict mode: Image size mismatch!\n"); | |
1265 | goto out; | |
1266 | } | |
1267 | ||
1268 | for (;;) { | |
25ad8e6e | 1269 | int64_t status1, status2; |
67a0fd2a FZ |
1270 | BlockDriverState *file; |
1271 | ||
d14ed18c MR |
1272 | nb_sectors = sectors_to_process(total_sectors, sector_num); |
1273 | if (nb_sectors <= 0) { | |
1274 | break; | |
1275 | } | |
25ad8e6e FZ |
1276 | status1 = bdrv_get_block_status_above(bs1, NULL, sector_num, |
1277 | total_sectors1 - sector_num, | |
67a0fd2a | 1278 | &pnum1, &file); |
25ad8e6e | 1279 | if (status1 < 0) { |
d14ed18c MR |
1280 | ret = 3; |
1281 | error_report("Sector allocation test failed for %s", filename1); | |
1282 | goto out; | |
1283 | } | |
25ad8e6e | 1284 | allocated1 = status1 & BDRV_BLOCK_ALLOCATED; |
d14ed18c | 1285 | |
25ad8e6e FZ |
1286 | status2 = bdrv_get_block_status_above(bs2, NULL, sector_num, |
1287 | total_sectors2 - sector_num, | |
67a0fd2a | 1288 | &pnum2, &file); |
25ad8e6e | 1289 | if (status2 < 0) { |
d14ed18c MR |
1290 | ret = 3; |
1291 | error_report("Sector allocation test failed for %s", filename2); | |
1292 | goto out; | |
1293 | } | |
25ad8e6e FZ |
1294 | allocated2 = status2 & BDRV_BLOCK_ALLOCATED; |
1295 | if (pnum1) { | |
1296 | nb_sectors = MIN(nb_sectors, pnum1); | |
1297 | } | |
1298 | if (pnum2) { | |
1299 | nb_sectors = MIN(nb_sectors, pnum2); | |
1300 | } | |
d14ed18c | 1301 | |
25ad8e6e FZ |
1302 | if (strict) { |
1303 | if ((status1 & ~BDRV_BLOCK_OFFSET_MASK) != | |
1304 | (status2 & ~BDRV_BLOCK_OFFSET_MASK)) { | |
1305 | ret = 1; | |
1306 | qprintf(quiet, "Strict mode: Offset %" PRId64 | |
1307 | " block status mismatch!\n", | |
1308 | sectors_to_bytes(sector_num)); | |
1309 | goto out; | |
1310 | } | |
1311 | } | |
1312 | if ((status1 & BDRV_BLOCK_ZERO) && (status2 & BDRV_BLOCK_ZERO)) { | |
1313 | nb_sectors = MIN(pnum1, pnum2); | |
1314 | } else if (allocated1 == allocated2) { | |
d14ed18c | 1315 | if (allocated1) { |
9166920a EB |
1316 | ret = blk_pread(blk1, sector_num << BDRV_SECTOR_BITS, buf1, |
1317 | nb_sectors << BDRV_SECTOR_BITS); | |
d14ed18c MR |
1318 | if (ret < 0) { |
1319 | error_report("Error while reading offset %" PRId64 " of %s:" | |
1320 | " %s", sectors_to_bytes(sector_num), filename1, | |
1321 | strerror(-ret)); | |
1322 | ret = 4; | |
1323 | goto out; | |
1324 | } | |
9166920a EB |
1325 | ret = blk_pread(blk2, sector_num << BDRV_SECTOR_BITS, buf2, |
1326 | nb_sectors << BDRV_SECTOR_BITS); | |
d14ed18c MR |
1327 | if (ret < 0) { |
1328 | error_report("Error while reading offset %" PRId64 | |
1329 | " of %s: %s", sectors_to_bytes(sector_num), | |
1330 | filename2, strerror(-ret)); | |
1331 | ret = 4; | |
1332 | goto out; | |
1333 | } | |
1334 | ret = compare_sectors(buf1, buf2, nb_sectors, &pnum); | |
1335 | if (ret || pnum != nb_sectors) { | |
d14ed18c MR |
1336 | qprintf(quiet, "Content mismatch at offset %" PRId64 "!\n", |
1337 | sectors_to_bytes( | |
1338 | ret ? sector_num : sector_num + pnum)); | |
36452f12 | 1339 | ret = 1; |
d14ed18c MR |
1340 | goto out; |
1341 | } | |
1342 | } | |
1343 | } else { | |
d14ed18c MR |
1344 | |
1345 | if (allocated1) { | |
f1d3cd79 | 1346 | ret = check_empty_sectors(blk1, sector_num, nb_sectors, |
d14ed18c MR |
1347 | filename1, buf1, quiet); |
1348 | } else { | |
f1d3cd79 | 1349 | ret = check_empty_sectors(blk2, sector_num, nb_sectors, |
d14ed18c MR |
1350 | filename2, buf1, quiet); |
1351 | } | |
1352 | if (ret) { | |
1353 | if (ret < 0) { | |
d14ed18c MR |
1354 | error_report("Error while reading offset %" PRId64 ": %s", |
1355 | sectors_to_bytes(sector_num), strerror(-ret)); | |
36452f12 | 1356 | ret = 4; |
d14ed18c MR |
1357 | } |
1358 | goto out; | |
1359 | } | |
1360 | } | |
1361 | sector_num += nb_sectors; | |
1362 | qemu_progress_print(((float) nb_sectors / progress_base)*100, 100); | |
1363 | } | |
1364 | ||
1365 | if (total_sectors1 != total_sectors2) { | |
f1d3cd79 | 1366 | BlockBackend *blk_over; |
d14ed18c MR |
1367 | int64_t total_sectors_over; |
1368 | const char *filename_over; | |
1369 | ||
1370 | qprintf(quiet, "Warning: Image size mismatch!\n"); | |
1371 | if (total_sectors1 > total_sectors2) { | |
1372 | total_sectors_over = total_sectors1; | |
f1d3cd79 | 1373 | blk_over = blk1; |
d14ed18c MR |
1374 | filename_over = filename1; |
1375 | } else { | |
1376 | total_sectors_over = total_sectors2; | |
f1d3cd79 | 1377 | blk_over = blk2; |
d14ed18c MR |
1378 | filename_over = filename2; |
1379 | } | |
1380 | ||
1381 | for (;;) { | |
1382 | nb_sectors = sectors_to_process(total_sectors_over, sector_num); | |
1383 | if (nb_sectors <= 0) { | |
1384 | break; | |
1385 | } | |
f1d3cd79 | 1386 | ret = bdrv_is_allocated_above(blk_bs(blk_over), NULL, sector_num, |
d14ed18c MR |
1387 | nb_sectors, &pnum); |
1388 | if (ret < 0) { | |
1389 | ret = 3; | |
1390 | error_report("Sector allocation test failed for %s", | |
1391 | filename_over); | |
1392 | goto out; | |
1393 | ||
1394 | } | |
1395 | nb_sectors = pnum; | |
1396 | if (ret) { | |
f1d3cd79 | 1397 | ret = check_empty_sectors(blk_over, sector_num, nb_sectors, |
d14ed18c MR |
1398 | filename_over, buf1, quiet); |
1399 | if (ret) { | |
1400 | if (ret < 0) { | |
d14ed18c MR |
1401 | error_report("Error while reading offset %" PRId64 |
1402 | " of %s: %s", sectors_to_bytes(sector_num), | |
1403 | filename_over, strerror(-ret)); | |
36452f12 | 1404 | ret = 4; |
d14ed18c MR |
1405 | } |
1406 | goto out; | |
1407 | } | |
1408 | } | |
1409 | sector_num += nb_sectors; | |
1410 | qemu_progress_print(((float) nb_sectors / progress_base)*100, 100); | |
1411 | } | |
1412 | } | |
1413 | ||
1414 | qprintf(quiet, "Images are identical.\n"); | |
1415 | ret = 0; | |
1416 | ||
1417 | out: | |
d14ed18c MR |
1418 | qemu_vfree(buf1); |
1419 | qemu_vfree(buf2); | |
26f54e9a | 1420 | blk_unref(blk2); |
d14ed18c | 1421 | out2: |
26f54e9a | 1422 | blk_unref(blk1); |
d14ed18c MR |
1423 | out3: |
1424 | qemu_progress_end(); | |
3babeb15 | 1425 | out4: |
d14ed18c MR |
1426 | return ret; |
1427 | } | |
1428 | ||
690c7301 KW |
1429 | enum ImgConvertBlockStatus { |
1430 | BLK_DATA, | |
1431 | BLK_ZERO, | |
1432 | BLK_BACKING_FILE, | |
1433 | }; | |
1434 | ||
1435 | typedef struct ImgConvertState { | |
1436 | BlockBackend **src; | |
1437 | int64_t *src_sectors; | |
1438 | int src_cur, src_num; | |
1439 | int64_t src_cur_offset; | |
1440 | int64_t total_sectors; | |
1441 | int64_t allocated_sectors; | |
1442 | enum ImgConvertBlockStatus status; | |
1443 | int64_t sector_next_status; | |
1444 | BlockBackend *target; | |
1445 | bool has_zero_init; | |
1446 | bool compressed; | |
1447 | bool target_has_backing; | |
1448 | int min_sparse; | |
1449 | size_t cluster_sectors; | |
1450 | size_t buf_sectors; | |
1451 | } ImgConvertState; | |
1452 | ||
1453 | static void convert_select_part(ImgConvertState *s, int64_t sector_num) | |
1454 | { | |
1455 | assert(sector_num >= s->src_cur_offset); | |
1456 | while (sector_num - s->src_cur_offset >= s->src_sectors[s->src_cur]) { | |
1457 | s->src_cur_offset += s->src_sectors[s->src_cur]; | |
1458 | s->src_cur++; | |
1459 | assert(s->src_cur < s->src_num); | |
1460 | } | |
1461 | } | |
1462 | ||
1463 | static int convert_iteration_sectors(ImgConvertState *s, int64_t sector_num) | |
1464 | { | |
1465 | int64_t ret; | |
1466 | int n; | |
1467 | ||
1468 | convert_select_part(s, sector_num); | |
1469 | ||
1470 | assert(s->total_sectors > sector_num); | |
1471 | n = MIN(s->total_sectors - sector_num, BDRV_REQUEST_MAX_SECTORS); | |
1472 | ||
1473 | if (s->sector_next_status <= sector_num) { | |
67a0fd2a | 1474 | BlockDriverState *file; |
690c7301 KW |
1475 | ret = bdrv_get_block_status(blk_bs(s->src[s->src_cur]), |
1476 | sector_num - s->src_cur_offset, | |
67a0fd2a | 1477 | n, &n, &file); |
690c7301 KW |
1478 | if (ret < 0) { |
1479 | return ret; | |
1480 | } | |
1481 | ||
1482 | if (ret & BDRV_BLOCK_ZERO) { | |
1483 | s->status = BLK_ZERO; | |
1484 | } else if (ret & BDRV_BLOCK_DATA) { | |
1485 | s->status = BLK_DATA; | |
1486 | } else if (!s->target_has_backing) { | |
1487 | /* Without a target backing file we must copy over the contents of | |
1488 | * the backing file as well. */ | |
263a6f4c | 1489 | /* Check block status of the backing file chain to avoid |
690c7301 KW |
1490 | * needlessly reading zeroes and limiting the iteration to the |
1491 | * buffer size */ | |
263a6f4c RK |
1492 | ret = bdrv_get_block_status_above(blk_bs(s->src[s->src_cur]), NULL, |
1493 | sector_num - s->src_cur_offset, | |
1494 | n, &n, &file); | |
1495 | if (ret < 0) { | |
1496 | return ret; | |
1497 | } | |
1498 | ||
1499 | if (ret & BDRV_BLOCK_ZERO) { | |
1500 | s->status = BLK_ZERO; | |
1501 | } else { | |
1502 | s->status = BLK_DATA; | |
1503 | } | |
690c7301 KW |
1504 | } else { |
1505 | s->status = BLK_BACKING_FILE; | |
1506 | } | |
1507 | ||
1508 | s->sector_next_status = sector_num + n; | |
1509 | } | |
1510 | ||
1511 | n = MIN(n, s->sector_next_status - sector_num); | |
1512 | if (s->status == BLK_DATA) { | |
1513 | n = MIN(n, s->buf_sectors); | |
1514 | } | |
1515 | ||
1516 | /* We need to write complete clusters for compressed images, so if an | |
1517 | * unallocated area is shorter than that, we must consider the whole | |
1518 | * cluster allocated. */ | |
1519 | if (s->compressed) { | |
1520 | if (n < s->cluster_sectors) { | |
1521 | n = MIN(s->cluster_sectors, s->total_sectors - sector_num); | |
1522 | s->status = BLK_DATA; | |
1523 | } else { | |
1524 | n = QEMU_ALIGN_DOWN(n, s->cluster_sectors); | |
1525 | } | |
1526 | } | |
1527 | ||
1528 | return n; | |
1529 | } | |
1530 | ||
1531 | static int convert_read(ImgConvertState *s, int64_t sector_num, int nb_sectors, | |
1532 | uint8_t *buf) | |
1533 | { | |
1534 | int n; | |
1535 | int ret; | |
1536 | ||
690c7301 KW |
1537 | assert(nb_sectors <= s->buf_sectors); |
1538 | while (nb_sectors > 0) { | |
1539 | BlockBackend *blk; | |
1540 | int64_t bs_sectors; | |
1541 | ||
1542 | /* In the case of compression with multiple source files, we can get a | |
1543 | * nb_sectors that spreads into the next part. So we must be able to | |
1544 | * read across multiple BDSes for one convert_read() call. */ | |
1545 | convert_select_part(s, sector_num); | |
1546 | blk = s->src[s->src_cur]; | |
1547 | bs_sectors = s->src_sectors[s->src_cur]; | |
1548 | ||
1549 | n = MIN(nb_sectors, bs_sectors - (sector_num - s->src_cur_offset)); | |
9166920a EB |
1550 | ret = blk_pread(blk, |
1551 | (sector_num - s->src_cur_offset) << BDRV_SECTOR_BITS, | |
1552 | buf, n << BDRV_SECTOR_BITS); | |
690c7301 KW |
1553 | if (ret < 0) { |
1554 | return ret; | |
1555 | } | |
1556 | ||
1557 | sector_num += n; | |
1558 | nb_sectors -= n; | |
1559 | buf += n * BDRV_SECTOR_SIZE; | |
1560 | } | |
1561 | ||
1562 | return 0; | |
1563 | } | |
1564 | ||
1565 | static int convert_write(ImgConvertState *s, int64_t sector_num, int nb_sectors, | |
1566 | const uint8_t *buf) | |
1567 | { | |
1568 | int ret; | |
1569 | ||
1570 | while (nb_sectors > 0) { | |
1571 | int n = nb_sectors; | |
1572 | ||
1573 | switch (s->status) { | |
1574 | case BLK_BACKING_FILE: | |
1575 | /* If we have a backing file, leave clusters unallocated that are | |
1576 | * unallocated in the source image, so that the backing file is | |
1577 | * visible at the respective offset. */ | |
1578 | assert(s->target_has_backing); | |
1579 | break; | |
1580 | ||
1581 | case BLK_DATA: | |
1582 | /* We must always write compressed clusters as a whole, so don't | |
1583 | * try to find zeroed parts in the buffer. We can only save the | |
1584 | * write if the buffer is completely zeroed and we're allowed to | |
1585 | * keep the target sparse. */ | |
1586 | if (s->compressed) { | |
1587 | if (s->has_zero_init && s->min_sparse && | |
1588 | buffer_is_zero(buf, n * BDRV_SECTOR_SIZE)) | |
1589 | { | |
1590 | assert(!s->target_has_backing); | |
1591 | break; | |
1592 | } | |
1593 | ||
1594 | ret = blk_write_compressed(s->target, sector_num, buf, n); | |
1595 | if (ret < 0) { | |
1596 | return ret; | |
1597 | } | |
1598 | break; | |
1599 | } | |
1600 | ||
1601 | /* If there is real non-zero data or we're told to keep the target | |
1602 | * fully allocated (-S 0), we must write it. Otherwise we can treat | |
1603 | * it as zero sectors. */ | |
1604 | if (!s->min_sparse || | |
1605 | is_allocated_sectors_min(buf, n, &n, s->min_sparse)) | |
1606 | { | |
9166920a EB |
1607 | ret = blk_pwrite(s->target, sector_num << BDRV_SECTOR_BITS, |
1608 | buf, n << BDRV_SECTOR_BITS, 0); | |
690c7301 KW |
1609 | if (ret < 0) { |
1610 | return ret; | |
1611 | } | |
1612 | break; | |
1613 | } | |
1614 | /* fall-through */ | |
1615 | ||
1616 | case BLK_ZERO: | |
1617 | if (s->has_zero_init) { | |
1618 | break; | |
1619 | } | |
d004bd52 EB |
1620 | ret = blk_pwrite_zeroes(s->target, sector_num << BDRV_SECTOR_BITS, |
1621 | n << BDRV_SECTOR_BITS, 0); | |
690c7301 KW |
1622 | if (ret < 0) { |
1623 | return ret; | |
1624 | } | |
1625 | break; | |
1626 | } | |
1627 | ||
1628 | sector_num += n; | |
1629 | nb_sectors -= n; | |
1630 | buf += n * BDRV_SECTOR_SIZE; | |
1631 | } | |
1632 | ||
1633 | return 0; | |
1634 | } | |
1635 | ||
1636 | static int convert_do_copy(ImgConvertState *s) | |
1637 | { | |
1638 | uint8_t *buf = NULL; | |
1639 | int64_t sector_num, allocated_done; | |
1640 | int ret; | |
1641 | int n; | |
1642 | ||
1643 | /* Check whether we have zero initialisation or can get it efficiently */ | |
1644 | s->has_zero_init = s->min_sparse && !s->target_has_backing | |
1645 | ? bdrv_has_zero_init(blk_bs(s->target)) | |
1646 | : false; | |
1647 | ||
1648 | if (!s->has_zero_init && !s->target_has_backing && | |
1649 | bdrv_can_write_zeroes_with_unmap(blk_bs(s->target))) | |
1650 | { | |
1651 | ret = bdrv_make_zero(blk_bs(s->target), BDRV_REQ_MAY_UNMAP); | |
1652 | if (ret == 0) { | |
1653 | s->has_zero_init = true; | |
1654 | } | |
1655 | } | |
1656 | ||
1657 | /* Allocate buffer for copied data. For compressed images, only one cluster | |
1658 | * can be copied at a time. */ | |
1659 | if (s->compressed) { | |
1660 | if (s->cluster_sectors <= 0 || s->cluster_sectors > s->buf_sectors) { | |
1661 | error_report("invalid cluster size"); | |
1662 | ret = -EINVAL; | |
1663 | goto fail; | |
1664 | } | |
1665 | s->buf_sectors = s->cluster_sectors; | |
1666 | } | |
1667 | buf = blk_blockalign(s->target, s->buf_sectors * BDRV_SECTOR_SIZE); | |
1668 | ||
1669 | /* Calculate allocated sectors for progress */ | |
1670 | s->allocated_sectors = 0; | |
1671 | sector_num = 0; | |
1672 | while (sector_num < s->total_sectors) { | |
1673 | n = convert_iteration_sectors(s, sector_num); | |
1674 | if (n < 0) { | |
1675 | ret = n; | |
1676 | goto fail; | |
1677 | } | |
aad15de4 HR |
1678 | if (s->status == BLK_DATA || (!s->min_sparse && s->status == BLK_ZERO)) |
1679 | { | |
690c7301 KW |
1680 | s->allocated_sectors += n; |
1681 | } | |
1682 | sector_num += n; | |
1683 | } | |
1684 | ||
1685 | /* Do the copy */ | |
1686 | s->src_cur = 0; | |
1687 | s->src_cur_offset = 0; | |
1688 | s->sector_next_status = 0; | |
1689 | ||
1690 | sector_num = 0; | |
1691 | allocated_done = 0; | |
1692 | ||
1693 | while (sector_num < s->total_sectors) { | |
1694 | n = convert_iteration_sectors(s, sector_num); | |
1695 | if (n < 0) { | |
1696 | ret = n; | |
1697 | goto fail; | |
1698 | } | |
aad15de4 HR |
1699 | if (s->status == BLK_DATA || (!s->min_sparse && s->status == BLK_ZERO)) |
1700 | { | |
690c7301 KW |
1701 | allocated_done += n; |
1702 | qemu_progress_print(100.0 * allocated_done / s->allocated_sectors, | |
1703 | 0); | |
1704 | } | |
1705 | ||
aad15de4 HR |
1706 | if (s->status == BLK_DATA) { |
1707 | ret = convert_read(s, sector_num, n, buf); | |
1708 | if (ret < 0) { | |
1709 | error_report("error while reading sector %" PRId64 | |
1710 | ": %s", sector_num, strerror(-ret)); | |
1711 | goto fail; | |
1712 | } | |
1713 | } else if (!s->min_sparse && s->status == BLK_ZERO) { | |
1714 | n = MIN(n, s->buf_sectors); | |
1715 | memset(buf, 0, n * BDRV_SECTOR_SIZE); | |
1716 | s->status = BLK_DATA; | |
690c7301 KW |
1717 | } |
1718 | ||
1719 | ret = convert_write(s, sector_num, n, buf); | |
1720 | if (ret < 0) { | |
1721 | error_report("error while writing sector %" PRId64 | |
1722 | ": %s", sector_num, strerror(-ret)); | |
1723 | goto fail; | |
1724 | } | |
1725 | ||
1726 | sector_num += n; | |
1727 | } | |
1728 | ||
1729 | if (s->compressed) { | |
1730 | /* signal EOF to align */ | |
1731 | ret = blk_write_compressed(s->target, 0, NULL, 0); | |
1732 | if (ret < 0) { | |
1733 | goto fail; | |
1734 | } | |
1735 | } | |
1736 | ||
1737 | ret = 0; | |
1738 | fail: | |
1739 | qemu_vfree(buf); | |
1740 | return ret; | |
1741 | } | |
1742 | ||
ea2384d3 FB |
1743 | static int img_convert(int argc, char **argv) |
1744 | { | |
690c7301 | 1745 | int c, bs_n, bs_i, compress, cluster_sectors, skip_create; |
13c28af8 | 1746 | int64_t ret = 0; |
40055951 | 1747 | int progress = 0, flags, src_flags; |
ce099547 | 1748 | bool writethrough, src_writethrough; |
40055951 | 1749 | const char *fmt, *out_fmt, *cache, *src_cache, *out_baseimg, *out_filename; |
b50cbabc | 1750 | BlockDriver *drv, *proto_drv; |
26f54e9a | 1751 | BlockBackend **blk = NULL, *out_blk = NULL; |
c2abccec | 1752 | BlockDriverState **bs = NULL, *out_bs = NULL; |
690c7301 | 1753 | int64_t total_sectors; |
52bf1e72 | 1754 | int64_t *bs_sectors = NULL; |
f2521c90 | 1755 | size_t bufsectors = IO_BUF_SIZE / BDRV_SECTOR_SIZE; |
faea38e7 | 1756 | BlockDriverInfo bdi; |
83d0521a CL |
1757 | QemuOpts *opts = NULL; |
1758 | QemuOptsList *create_opts = NULL; | |
1759 | const char *out_baseimg_param; | |
efa84d43 | 1760 | char *options = NULL; |
51ef6727 | 1761 | const char *snapshot_name = NULL; |
a22f123c | 1762 | int min_sparse = 8; /* Need at least 4k of zeros for sparse detection */ |
f382d43a | 1763 | bool quiet = false; |
cc84d90f | 1764 | Error *local_err = NULL; |
ef80654d | 1765 | QemuOpts *sn_opts = NULL; |
690c7301 | 1766 | ImgConvertState state; |
eb769f74 | 1767 | bool image_opts = false; |
ea2384d3 FB |
1768 | |
1769 | fmt = NULL; | |
1770 | out_fmt = "raw"; | |
661a0f71 | 1771 | cache = "unsafe"; |
40055951 | 1772 | src_cache = BDRV_DEFAULT_CACHE; |
f58c7b35 | 1773 | out_baseimg = NULL; |
eec77d9e | 1774 | compress = 0; |
b2e10493 | 1775 | skip_create = 0; |
ea2384d3 | 1776 | for(;;) { |
3babeb15 DB |
1777 | static const struct option long_options[] = { |
1778 | {"help", no_argument, 0, 'h'}, | |
1779 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 1780 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
1781 | {0, 0, 0, 0} |
1782 | }; | |
1783 | c = getopt_long(argc, argv, "hf:O:B:ce6o:s:l:S:pt:T:qn", | |
1784 | long_options, NULL); | |
b8fb60da | 1785 | if (c == -1) { |
ea2384d3 | 1786 | break; |
b8fb60da | 1787 | } |
ea2384d3 | 1788 | switch(c) { |
ef87394c | 1789 | case '?': |
ea2384d3 FB |
1790 | case 'h': |
1791 | help(); | |
1792 | break; | |
1793 | case 'f': | |
1794 | fmt = optarg; | |
1795 | break; | |
1796 | case 'O': | |
1797 | out_fmt = optarg; | |
1798 | break; | |
f58c7b35 TS |
1799 | case 'B': |
1800 | out_baseimg = optarg; | |
1801 | break; | |
ea2384d3 | 1802 | case 'c': |
eec77d9e | 1803 | compress = 1; |
ea2384d3 FB |
1804 | break; |
1805 | case 'e': | |
9d42e15d | 1806 | error_report("option -e is deprecated, please use \'-o " |
eec77d9e | 1807 | "encryption\' instead!"); |
2dc8328b | 1808 | ret = -1; |
64bb01aa | 1809 | goto fail_getopt; |
ec36ba14 | 1810 | case '6': |
9d42e15d | 1811 | error_report("option -6 is deprecated, please use \'-o " |
eec77d9e | 1812 | "compat6\' instead!"); |
2dc8328b | 1813 | ret = -1; |
64bb01aa | 1814 | goto fail_getopt; |
efa84d43 | 1815 | case 'o': |
2dc8328b KW |
1816 | if (!is_valid_option_list(optarg)) { |
1817 | error_report("Invalid option list: %s", optarg); | |
1818 | ret = -1; | |
64bb01aa | 1819 | goto fail_getopt; |
2dc8328b KW |
1820 | } |
1821 | if (!options) { | |
1822 | options = g_strdup(optarg); | |
1823 | } else { | |
1824 | char *old_options = options; | |
1825 | options = g_strdup_printf("%s,%s", options, optarg); | |
1826 | g_free(old_options); | |
1827 | } | |
efa84d43 | 1828 | break; |
51ef6727 | 1829 | case 's': |
1830 | snapshot_name = optarg; | |
1831 | break; | |
ef80654d WX |
1832 | case 'l': |
1833 | if (strstart(optarg, SNAPSHOT_OPT_BASE, NULL)) { | |
70b94331 MA |
1834 | sn_opts = qemu_opts_parse_noisily(&internal_snapshot_opts, |
1835 | optarg, false); | |
ef80654d WX |
1836 | if (!sn_opts) { |
1837 | error_report("Failed in parsing snapshot param '%s'", | |
1838 | optarg); | |
2dc8328b | 1839 | ret = -1; |
64bb01aa | 1840 | goto fail_getopt; |
ef80654d WX |
1841 | } |
1842 | } else { | |
1843 | snapshot_name = optarg; | |
1844 | } | |
1845 | break; | |
a22f123c KW |
1846 | case 'S': |
1847 | { | |
1848 | int64_t sval; | |
e36b3695 | 1849 | char *end; |
4677bb40 | 1850 | sval = qemu_strtosz_suffix(optarg, &end, QEMU_STRTOSZ_DEFSUFFIX_B); |
e36b3695 | 1851 | if (sval < 0 || *end) { |
a22f123c | 1852 | error_report("Invalid minimum zero buffer size for sparse output specified"); |
2dc8328b | 1853 | ret = -1; |
64bb01aa | 1854 | goto fail_getopt; |
a22f123c KW |
1855 | } |
1856 | ||
1857 | min_sparse = sval / BDRV_SECTOR_SIZE; | |
1858 | break; | |
1859 | } | |
6b837bc4 JS |
1860 | case 'p': |
1861 | progress = 1; | |
1862 | break; | |
661a0f71 FS |
1863 | case 't': |
1864 | cache = optarg; | |
1865 | break; | |
40055951 HR |
1866 | case 'T': |
1867 | src_cache = optarg; | |
1868 | break; | |
f382d43a MR |
1869 | case 'q': |
1870 | quiet = true; | |
1871 | break; | |
b2e10493 AD |
1872 | case 'n': |
1873 | skip_create = 1; | |
1874 | break; | |
3babeb15 DB |
1875 | case OPTION_OBJECT: |
1876 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
1877 | optarg, true); | |
1878 | if (!opts) { | |
1879 | goto fail_getopt; | |
1880 | } | |
1881 | break; | |
eb769f74 DB |
1882 | case OPTION_IMAGE_OPTS: |
1883 | image_opts = true; | |
1884 | break; | |
ea2384d3 FB |
1885 | } |
1886 | } | |
3b46e624 | 1887 | |
3babeb15 DB |
1888 | if (qemu_opts_foreach(&qemu_object_opts, |
1889 | user_creatable_add_opts_foreach, | |
51b9b478 | 1890 | NULL, NULL)) { |
3babeb15 DB |
1891 | goto fail_getopt; |
1892 | } | |
1893 | ||
64bb01aa | 1894 | /* Initialize before goto out */ |
f382d43a MR |
1895 | if (quiet) { |
1896 | progress = 0; | |
1897 | } | |
64bb01aa KW |
1898 | qemu_progress_init(progress, 1.0); |
1899 | ||
926c2d23 | 1900 | bs_n = argc - optind - 1; |
a283cb6e | 1901 | out_filename = bs_n >= 1 ? argv[argc - 1] : NULL; |
f58c7b35 | 1902 | |
2dc8328b | 1903 | if (options && has_help_option(options)) { |
4ac8aacd JS |
1904 | ret = print_block_option_help(out_filename, out_fmt); |
1905 | goto out; | |
1906 | } | |
1907 | ||
a283cb6e | 1908 | if (bs_n < 1) { |
ac1307ab | 1909 | error_exit("Must specify image file name"); |
a283cb6e KW |
1910 | } |
1911 | ||
1912 | ||
c2abccec | 1913 | if (bs_n > 1 && out_baseimg) { |
15654a6d JS |
1914 | error_report("-B makes no sense when concatenating multiple input " |
1915 | "images"); | |
31ca34b8 JS |
1916 | ret = -1; |
1917 | goto out; | |
c2abccec | 1918 | } |
f8111c24 | 1919 | |
ce099547 KW |
1920 | src_flags = 0; |
1921 | ret = bdrv_parse_cache_mode(src_cache, &src_flags, &src_writethrough); | |
40055951 HR |
1922 | if (ret < 0) { |
1923 | error_report("Invalid source cache option: %s", src_cache); | |
1924 | goto out; | |
1925 | } | |
1926 | ||
6b837bc4 JS |
1927 | qemu_progress_print(0, 100); |
1928 | ||
26f54e9a | 1929 | blk = g_new0(BlockBackend *, bs_n); |
d739f1c4 | 1930 | bs = g_new0(BlockDriverState *, bs_n); |
52bf1e72 | 1931 | bs_sectors = g_new(int64_t, bs_n); |
926c2d23 AZ |
1932 | |
1933 | total_sectors = 0; | |
1934 | for (bs_i = 0; bs_i < bs_n; bs_i++) { | |
efaa7c4e | 1935 | blk[bs_i] = img_open(image_opts, argv[optind + bs_i], |
ce099547 | 1936 | fmt, src_flags, src_writethrough, quiet); |
7e7d56d9 | 1937 | if (!blk[bs_i]) { |
c2abccec MK |
1938 | ret = -1; |
1939 | goto out; | |
1940 | } | |
7e7d56d9 | 1941 | bs[bs_i] = blk_bs(blk[bs_i]); |
f1d3cd79 | 1942 | bs_sectors[bs_i] = blk_nb_sectors(blk[bs_i]); |
52bf1e72 MA |
1943 | if (bs_sectors[bs_i] < 0) { |
1944 | error_report("Could not get size of %s: %s", | |
1945 | argv[optind + bs_i], strerror(-bs_sectors[bs_i])); | |
1946 | ret = -1; | |
1947 | goto out; | |
1948 | } | |
d739f1c4 | 1949 | total_sectors += bs_sectors[bs_i]; |
926c2d23 | 1950 | } |
ea2384d3 | 1951 | |
ef80654d WX |
1952 | if (sn_opts) { |
1953 | ret = bdrv_snapshot_load_tmp(bs[0], | |
1954 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_ID), | |
1955 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_NAME), | |
1956 | &local_err); | |
1957 | } else if (snapshot_name != NULL) { | |
51ef6727 | 1958 | if (bs_n > 1) { |
6daf194d | 1959 | error_report("No support for concatenating multiple snapshot"); |
51ef6727 | 1960 | ret = -1; |
1961 | goto out; | |
1962 | } | |
7b4c4781 WX |
1963 | |
1964 | bdrv_snapshot_load_tmp_by_id_or_name(bs[0], snapshot_name, &local_err); | |
ef80654d | 1965 | } |
84d18f06 | 1966 | if (local_err) { |
c29b77f9 | 1967 | error_reportf_err(local_err, "Failed to load snapshot: "); |
ef80654d WX |
1968 | ret = -1; |
1969 | goto out; | |
51ef6727 | 1970 | } |
1971 | ||
efa84d43 | 1972 | /* Find driver and parse its options */ |
ea2384d3 | 1973 | drv = bdrv_find_format(out_fmt); |
c2abccec | 1974 | if (!drv) { |
15654a6d | 1975 | error_report("Unknown file format '%s'", out_fmt); |
c2abccec MK |
1976 | ret = -1; |
1977 | goto out; | |
1978 | } | |
efa84d43 | 1979 | |
b65a5e12 | 1980 | proto_drv = bdrv_find_protocol(out_filename, true, &local_err); |
c2abccec | 1981 | if (!proto_drv) { |
2867ce4a | 1982 | error_report_err(local_err); |
c2abccec MK |
1983 | ret = -1; |
1984 | goto out; | |
1985 | } | |
b50cbabc | 1986 | |
2e024cde HR |
1987 | if (!skip_create) { |
1988 | if (!drv->create_opts) { | |
1989 | error_report("Format driver '%s' does not support image creation", | |
1990 | drv->format_name); | |
1991 | ret = -1; | |
1992 | goto out; | |
1993 | } | |
f75613cf | 1994 | |
2e024cde HR |
1995 | if (!proto_drv->create_opts) { |
1996 | error_report("Protocol driver '%s' does not support image creation", | |
1997 | proto_drv->format_name); | |
1998 | ret = -1; | |
1999 | goto out; | |
2000 | } | |
f75613cf | 2001 | |
2e024cde HR |
2002 | create_opts = qemu_opts_append(create_opts, drv->create_opts); |
2003 | create_opts = qemu_opts_append(create_opts, proto_drv->create_opts); | |
db08adf5 | 2004 | |
2e024cde | 2005 | opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); |
dc523cd3 MA |
2006 | if (options) { |
2007 | qemu_opts_do_parse(opts, options, NULL, &local_err); | |
2008 | if (local_err) { | |
97a2ca7a | 2009 | error_report_err(local_err); |
dc523cd3 MA |
2010 | ret = -1; |
2011 | goto out; | |
2012 | } | |
2e024cde | 2013 | } |
efa84d43 | 2014 | |
39101f25 MA |
2015 | qemu_opt_set_number(opts, BLOCK_OPT_SIZE, total_sectors * 512, |
2016 | &error_abort); | |
2e024cde HR |
2017 | ret = add_old_style_options(out_fmt, opts, out_baseimg, NULL); |
2018 | if (ret < 0) { | |
2019 | goto out; | |
2020 | } | |
c2abccec | 2021 | } |
efa84d43 | 2022 | |
a18953fb | 2023 | /* Get backing file name if -o backing_file was used */ |
83d0521a | 2024 | out_baseimg_param = qemu_opt_get(opts, BLOCK_OPT_BACKING_FILE); |
a18953fb | 2025 | if (out_baseimg_param) { |
83d0521a | 2026 | out_baseimg = out_baseimg_param; |
a18953fb KW |
2027 | } |
2028 | ||
efa84d43 | 2029 | /* Check if compression is supported */ |
eec77d9e | 2030 | if (compress) { |
83d0521a CL |
2031 | bool encryption = |
2032 | qemu_opt_get_bool(opts, BLOCK_OPT_ENCRYPT, false); | |
2033 | const char *preallocation = | |
2034 | qemu_opt_get(opts, BLOCK_OPT_PREALLOC); | |
efa84d43 KW |
2035 | |
2036 | if (!drv->bdrv_write_compressed) { | |
15654a6d | 2037 | error_report("Compression not supported for this file format"); |
c2abccec MK |
2038 | ret = -1; |
2039 | goto out; | |
efa84d43 KW |
2040 | } |
2041 | ||
83d0521a | 2042 | if (encryption) { |
15654a6d JS |
2043 | error_report("Compression and encryption not supported at " |
2044 | "the same time"); | |
c2abccec MK |
2045 | ret = -1; |
2046 | goto out; | |
efa84d43 | 2047 | } |
41521fa4 | 2048 | |
83d0521a CL |
2049 | if (preallocation |
2050 | && strcmp(preallocation, "off")) | |
41521fa4 KW |
2051 | { |
2052 | error_report("Compression and preallocation not supported at " | |
2053 | "the same time"); | |
2054 | ret = -1; | |
2055 | goto out; | |
2056 | } | |
efa84d43 KW |
2057 | } |
2058 | ||
b2e10493 AD |
2059 | if (!skip_create) { |
2060 | /* Create the new image */ | |
c282e1fd | 2061 | ret = bdrv_create(drv, out_filename, opts, &local_err); |
b2e10493 | 2062 | if (ret < 0) { |
c29b77f9 MA |
2063 | error_reportf_err(local_err, "%s: error while converting %s: ", |
2064 | out_filename, out_fmt); | |
b2e10493 | 2065 | goto out; |
ea2384d3 FB |
2066 | } |
2067 | } | |
3b46e624 | 2068 | |
5a37b60a | 2069 | flags = min_sparse ? (BDRV_O_RDWR | BDRV_O_UNMAP) : BDRV_O_RDWR; |
ce099547 | 2070 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); |
661a0f71 FS |
2071 | if (ret < 0) { |
2072 | error_report("Invalid cache option: %s", cache); | |
bb9cd2ee | 2073 | goto out; |
661a0f71 FS |
2074 | } |
2075 | ||
eb769f74 DB |
2076 | /* XXX we should allow --image-opts to trigger use of |
2077 | * img_open() here, but then we have trouble with | |
2078 | * the bdrv_create() call which takes different params. | |
2079 | * Not critical right now, so fix can wait... | |
2080 | */ | |
ce099547 | 2081 | out_blk = img_open_file(out_filename, out_fmt, flags, writethrough, quiet); |
7e7d56d9 | 2082 | if (!out_blk) { |
c2abccec MK |
2083 | ret = -1; |
2084 | goto out; | |
2085 | } | |
7e7d56d9 | 2086 | out_bs = blk_bs(out_blk); |
ea2384d3 | 2087 | |
5def6b80 | 2088 | /* increase bufsectors from the default 4096 (2M) if opt_transfer |
f2521c90 PL |
2089 | * or discard_alignment of the out_bs is greater. Limit to 32768 (16MB) |
2090 | * as maximum. */ | |
2091 | bufsectors = MIN(32768, | |
5def6b80 EB |
2092 | MAX(bufsectors, |
2093 | MAX(out_bs->bl.opt_transfer >> BDRV_SECTOR_BITS, | |
b9f7855a EB |
2094 | out_bs->bl.pdiscard_alignment >> |
2095 | BDRV_SECTOR_BITS))); | |
f2521c90 | 2096 | |
b2e10493 | 2097 | if (skip_create) { |
f1d3cd79 | 2098 | int64_t output_sectors = blk_nb_sectors(out_blk); |
43716fa8 | 2099 | if (output_sectors < 0) { |
eec5eb42 | 2100 | error_report("unable to get output image length: %s", |
43716fa8 | 2101 | strerror(-output_sectors)); |
b2e10493 AD |
2102 | ret = -1; |
2103 | goto out; | |
43716fa8 | 2104 | } else if (output_sectors < total_sectors) { |
b2e10493 AD |
2105 | error_report("output file is smaller than input file"); |
2106 | ret = -1; | |
2107 | goto out; | |
2108 | } | |
2109 | } | |
2110 | ||
24f833cd PL |
2111 | cluster_sectors = 0; |
2112 | ret = bdrv_get_info(out_bs, &bdi); | |
2113 | if (ret < 0) { | |
2114 | if (compress) { | |
15654a6d | 2115 | error_report("could not get block driver info"); |
c2abccec MK |
2116 | goto out; |
2117 | } | |
24f833cd | 2118 | } else { |
85f49cad | 2119 | compress = compress || bdi.needs_compressed_writes; |
24f833cd PL |
2120 | cluster_sectors = bdi.cluster_size / BDRV_SECTOR_SIZE; |
2121 | } | |
2122 | ||
690c7301 KW |
2123 | state = (ImgConvertState) { |
2124 | .src = blk, | |
2125 | .src_sectors = bs_sectors, | |
2126 | .src_num = bs_n, | |
2127 | .total_sectors = total_sectors, | |
2128 | .target = out_blk, | |
2129 | .compressed = compress, | |
2130 | .target_has_backing = (bool) out_baseimg, | |
2131 | .min_sparse = min_sparse, | |
2132 | .cluster_sectors = cluster_sectors, | |
2133 | .buf_sectors = bufsectors, | |
2134 | }; | |
2135 | ret = convert_do_copy(&state); | |
802c3d4c | 2136 | |
c2abccec | 2137 | out: |
13c28af8 PL |
2138 | if (!ret) { |
2139 | qemu_progress_print(100, 0); | |
2140 | } | |
6b837bc4 | 2141 | qemu_progress_end(); |
83d0521a CL |
2142 | qemu_opts_del(opts); |
2143 | qemu_opts_free(create_opts); | |
fbf28a43 | 2144 | qemu_opts_del(sn_opts); |
26f54e9a | 2145 | blk_unref(out_blk); |
9ba10c95 | 2146 | g_free(bs); |
26f54e9a MA |
2147 | if (blk) { |
2148 | for (bs_i = 0; bs_i < bs_n; bs_i++) { | |
2149 | blk_unref(blk[bs_i]); | |
2150 | } | |
2151 | g_free(blk); | |
2152 | } | |
d739f1c4 | 2153 | g_free(bs_sectors); |
64bb01aa KW |
2154 | fail_getopt: |
2155 | g_free(options); | |
2156 | ||
c2abccec MK |
2157 | if (ret) { |
2158 | return 1; | |
2159 | } | |
ea2384d3 FB |
2160 | return 0; |
2161 | } | |
2162 | ||
57d1a2b6 | 2163 | |
faea38e7 FB |
2164 | static void dump_snapshots(BlockDriverState *bs) |
2165 | { | |
2166 | QEMUSnapshotInfo *sn_tab, *sn; | |
2167 | int nb_sns, i; | |
faea38e7 FB |
2168 | |
2169 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
2170 | if (nb_sns <= 0) | |
2171 | return; | |
2172 | printf("Snapshot list:\n"); | |
5b917044 WX |
2173 | bdrv_snapshot_dump(fprintf, stdout, NULL); |
2174 | printf("\n"); | |
faea38e7 FB |
2175 | for(i = 0; i < nb_sns; i++) { |
2176 | sn = &sn_tab[i]; | |
5b917044 WX |
2177 | bdrv_snapshot_dump(fprintf, stdout, sn); |
2178 | printf("\n"); | |
faea38e7 | 2179 | } |
7267c094 | 2180 | g_free(sn_tab); |
faea38e7 FB |
2181 | } |
2182 | ||
9699bf0d SH |
2183 | static void dump_json_image_info_list(ImageInfoList *list) |
2184 | { | |
4399c438 | 2185 | Error *local_err = NULL; |
9699bf0d SH |
2186 | QString *str; |
2187 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
2188 | QObject *obj; | |
51e72bc1 EB |
2189 | visit_type_ImageInfoList(qmp_output_get_visitor(ov), NULL, &list, |
2190 | &local_err); | |
9699bf0d SH |
2191 | obj = qmp_output_get_qobject(ov); |
2192 | str = qobject_to_json_pretty(obj); | |
2193 | assert(str != NULL); | |
2194 | printf("%s\n", qstring_get_str(str)); | |
2195 | qobject_decref(obj); | |
2196 | qmp_output_visitor_cleanup(ov); | |
2197 | QDECREF(str); | |
2198 | } | |
2199 | ||
c054b3fd BC |
2200 | static void dump_json_image_info(ImageInfo *info) |
2201 | { | |
4399c438 | 2202 | Error *local_err = NULL; |
c054b3fd BC |
2203 | QString *str; |
2204 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
2205 | QObject *obj; | |
51e72bc1 | 2206 | visit_type_ImageInfo(qmp_output_get_visitor(ov), NULL, &info, &local_err); |
c054b3fd BC |
2207 | obj = qmp_output_get_qobject(ov); |
2208 | str = qobject_to_json_pretty(obj); | |
2209 | assert(str != NULL); | |
2210 | printf("%s\n", qstring_get_str(str)); | |
2211 | qobject_decref(obj); | |
2212 | qmp_output_visitor_cleanup(ov); | |
2213 | QDECREF(str); | |
2214 | } | |
2215 | ||
9699bf0d SH |
2216 | static void dump_human_image_info_list(ImageInfoList *list) |
2217 | { | |
2218 | ImageInfoList *elem; | |
2219 | bool delim = false; | |
2220 | ||
2221 | for (elem = list; elem; elem = elem->next) { | |
2222 | if (delim) { | |
2223 | printf("\n"); | |
2224 | } | |
2225 | delim = true; | |
2226 | ||
5b917044 | 2227 | bdrv_image_info_dump(fprintf, stdout, elem->value); |
9699bf0d SH |
2228 | } |
2229 | } | |
2230 | ||
2231 | static gboolean str_equal_func(gconstpointer a, gconstpointer b) | |
2232 | { | |
2233 | return strcmp(a, b) == 0; | |
2234 | } | |
2235 | ||
2236 | /** | |
2237 | * Open an image file chain and return an ImageInfoList | |
2238 | * | |
2239 | * @filename: topmost image filename | |
2240 | * @fmt: topmost image format (may be NULL to autodetect) | |
2241 | * @chain: true - enumerate entire backing file chain | |
2242 | * false - only topmost image file | |
2243 | * | |
2244 | * Returns a list of ImageInfo objects or NULL if there was an error opening an | |
2245 | * image file. If there was an error a message will have been printed to | |
2246 | * stderr. | |
2247 | */ | |
eb769f74 DB |
2248 | static ImageInfoList *collect_image_info_list(bool image_opts, |
2249 | const char *filename, | |
9699bf0d SH |
2250 | const char *fmt, |
2251 | bool chain) | |
2252 | { | |
2253 | ImageInfoList *head = NULL; | |
2254 | ImageInfoList **last = &head; | |
2255 | GHashTable *filenames; | |
43526ec8 | 2256 | Error *err = NULL; |
9699bf0d SH |
2257 | |
2258 | filenames = g_hash_table_new_full(g_str_hash, str_equal_func, NULL, NULL); | |
2259 | ||
2260 | while (filename) { | |
26f54e9a | 2261 | BlockBackend *blk; |
9699bf0d SH |
2262 | BlockDriverState *bs; |
2263 | ImageInfo *info; | |
2264 | ImageInfoList *elem; | |
2265 | ||
2266 | if (g_hash_table_lookup_extended(filenames, filename, NULL, NULL)) { | |
2267 | error_report("Backing file '%s' creates an infinite loop.", | |
2268 | filename); | |
2269 | goto err; | |
2270 | } | |
2271 | g_hash_table_insert(filenames, (gpointer)filename, NULL); | |
2272 | ||
efaa7c4e | 2273 | blk = img_open(image_opts, filename, fmt, |
ce099547 | 2274 | BDRV_O_NO_BACKING | BDRV_O_NO_IO, false, false); |
7e7d56d9 | 2275 | if (!blk) { |
9699bf0d SH |
2276 | goto err; |
2277 | } | |
7e7d56d9 | 2278 | bs = blk_bs(blk); |
9699bf0d | 2279 | |
43526ec8 | 2280 | bdrv_query_image_info(bs, &info, &err); |
84d18f06 | 2281 | if (err) { |
565f65d2 | 2282 | error_report_err(err); |
26f54e9a | 2283 | blk_unref(blk); |
43526ec8 | 2284 | goto err; |
fb0ed453 | 2285 | } |
9699bf0d SH |
2286 | |
2287 | elem = g_new0(ImageInfoList, 1); | |
2288 | elem->value = info; | |
2289 | *last = elem; | |
2290 | last = &elem->next; | |
2291 | ||
26f54e9a | 2292 | blk_unref(blk); |
9699bf0d SH |
2293 | |
2294 | filename = fmt = NULL; | |
2295 | if (chain) { | |
2296 | if (info->has_full_backing_filename) { | |
2297 | filename = info->full_backing_filename; | |
2298 | } else if (info->has_backing_filename) { | |
92d617ab JS |
2299 | error_report("Could not determine absolute backing filename," |
2300 | " but backing filename '%s' present", | |
2301 | info->backing_filename); | |
2302 | goto err; | |
9699bf0d SH |
2303 | } |
2304 | if (info->has_backing_filename_format) { | |
2305 | fmt = info->backing_filename_format; | |
2306 | } | |
2307 | } | |
2308 | } | |
2309 | g_hash_table_destroy(filenames); | |
2310 | return head; | |
2311 | ||
2312 | err: | |
2313 | qapi_free_ImageInfoList(head); | |
2314 | g_hash_table_destroy(filenames); | |
2315 | return NULL; | |
2316 | } | |
2317 | ||
c054b3fd BC |
2318 | static int img_info(int argc, char **argv) |
2319 | { | |
2320 | int c; | |
2321 | OutputFormat output_format = OFORMAT_HUMAN; | |
9699bf0d | 2322 | bool chain = false; |
c054b3fd | 2323 | const char *filename, *fmt, *output; |
9699bf0d | 2324 | ImageInfoList *list; |
eb769f74 | 2325 | bool image_opts = false; |
c054b3fd | 2326 | |
ea2384d3 | 2327 | fmt = NULL; |
c054b3fd | 2328 | output = NULL; |
ea2384d3 | 2329 | for(;;) { |
c054b3fd BC |
2330 | int option_index = 0; |
2331 | static const struct option long_options[] = { | |
2332 | {"help", no_argument, 0, 'h'}, | |
2333 | {"format", required_argument, 0, 'f'}, | |
2334 | {"output", required_argument, 0, OPTION_OUTPUT}, | |
9699bf0d | 2335 | {"backing-chain", no_argument, 0, OPTION_BACKING_CHAIN}, |
3babeb15 | 2336 | {"object", required_argument, 0, OPTION_OBJECT}, |
eb769f74 | 2337 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
c054b3fd BC |
2338 | {0, 0, 0, 0} |
2339 | }; | |
2340 | c = getopt_long(argc, argv, "f:h", | |
2341 | long_options, &option_index); | |
b8fb60da | 2342 | if (c == -1) { |
ea2384d3 | 2343 | break; |
b8fb60da | 2344 | } |
ea2384d3 | 2345 | switch(c) { |
ef87394c | 2346 | case '?': |
ea2384d3 FB |
2347 | case 'h': |
2348 | help(); | |
2349 | break; | |
2350 | case 'f': | |
2351 | fmt = optarg; | |
2352 | break; | |
c054b3fd BC |
2353 | case OPTION_OUTPUT: |
2354 | output = optarg; | |
2355 | break; | |
9699bf0d SH |
2356 | case OPTION_BACKING_CHAIN: |
2357 | chain = true; | |
2358 | break; | |
3babeb15 DB |
2359 | case OPTION_OBJECT: { |
2360 | QemuOpts *opts; | |
2361 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
2362 | optarg, true); | |
2363 | if (!opts) { | |
2364 | return 1; | |
2365 | } | |
2366 | } break; | |
eb769f74 DB |
2367 | case OPTION_IMAGE_OPTS: |
2368 | image_opts = true; | |
2369 | break; | |
ea2384d3 FB |
2370 | } |
2371 | } | |
fc11eb26 | 2372 | if (optind != argc - 1) { |
ac1307ab | 2373 | error_exit("Expecting one image file name"); |
b8fb60da | 2374 | } |
ea2384d3 FB |
2375 | filename = argv[optind++]; |
2376 | ||
c054b3fd BC |
2377 | if (output && !strcmp(output, "json")) { |
2378 | output_format = OFORMAT_JSON; | |
2379 | } else if (output && !strcmp(output, "human")) { | |
2380 | output_format = OFORMAT_HUMAN; | |
2381 | } else if (output) { | |
2382 | error_report("--output must be used with human or json as argument."); | |
c2abccec MK |
2383 | return 1; |
2384 | } | |
c054b3fd | 2385 | |
3babeb15 DB |
2386 | if (qemu_opts_foreach(&qemu_object_opts, |
2387 | user_creatable_add_opts_foreach, | |
51b9b478 | 2388 | NULL, NULL)) { |
3babeb15 DB |
2389 | return 1; |
2390 | } | |
2391 | ||
eb769f74 | 2392 | list = collect_image_info_list(image_opts, filename, fmt, chain); |
9699bf0d | 2393 | if (!list) { |
c2abccec | 2394 | return 1; |
faea38e7 | 2395 | } |
c054b3fd | 2396 | |
c054b3fd BC |
2397 | switch (output_format) { |
2398 | case OFORMAT_HUMAN: | |
9699bf0d | 2399 | dump_human_image_info_list(list); |
c054b3fd BC |
2400 | break; |
2401 | case OFORMAT_JSON: | |
9699bf0d SH |
2402 | if (chain) { |
2403 | dump_json_image_info_list(list); | |
2404 | } else { | |
2405 | dump_json_image_info(list->value); | |
2406 | } | |
c054b3fd | 2407 | break; |
faea38e7 | 2408 | } |
c054b3fd | 2409 | |
9699bf0d | 2410 | qapi_free_ImageInfoList(list); |
ea2384d3 FB |
2411 | return 0; |
2412 | } | |
2413 | ||
4c93a13b PB |
2414 | static void dump_map_entry(OutputFormat output_format, MapEntry *e, |
2415 | MapEntry *next) | |
2416 | { | |
2417 | switch (output_format) { | |
2418 | case OFORMAT_HUMAN: | |
16b0d555 | 2419 | if (e->data && !e->has_offset) { |
4c93a13b PB |
2420 | error_report("File contains external, encrypted or compressed clusters."); |
2421 | exit(1); | |
2422 | } | |
16b0d555 | 2423 | if (e->data && !e->zero) { |
4c93a13b | 2424 | printf("%#-16"PRIx64"%#-16"PRIx64"%#-16"PRIx64"%s\n", |
16b0d555 FZ |
2425 | e->start, e->length, |
2426 | e->has_offset ? e->offset : 0, | |
2427 | e->has_filename ? e->filename : ""); | |
4c93a13b PB |
2428 | } |
2429 | /* This format ignores the distinction between 0, ZERO and ZERO|DATA. | |
2430 | * Modify the flags here to allow more coalescing. | |
2431 | */ | |
16b0d555 FZ |
2432 | if (next && (!next->data || next->zero)) { |
2433 | next->data = false; | |
2434 | next->zero = true; | |
4c93a13b PB |
2435 | } |
2436 | break; | |
2437 | case OFORMAT_JSON: | |
16b0d555 FZ |
2438 | printf("%s{ \"start\": %"PRId64", \"length\": %"PRId64"," |
2439 | " \"depth\": %"PRId64", \"zero\": %s, \"data\": %s", | |
4c93a13b PB |
2440 | (e->start == 0 ? "[" : ",\n"), |
2441 | e->start, e->length, e->depth, | |
16b0d555 FZ |
2442 | e->zero ? "true" : "false", |
2443 | e->data ? "true" : "false"); | |
2444 | if (e->has_offset) { | |
c745bfb4 | 2445 | printf(", \"offset\": %"PRId64"", e->offset); |
4c93a13b PB |
2446 | } |
2447 | putchar('}'); | |
2448 | ||
2449 | if (!next) { | |
2450 | printf("]\n"); | |
2451 | } | |
2452 | break; | |
2453 | } | |
2454 | } | |
2455 | ||
2456 | static int get_block_status(BlockDriverState *bs, int64_t sector_num, | |
2457 | int nb_sectors, MapEntry *e) | |
2458 | { | |
2459 | int64_t ret; | |
2460 | int depth; | |
67a0fd2a | 2461 | BlockDriverState *file; |
2875645b | 2462 | bool has_offset; |
4c93a13b PB |
2463 | |
2464 | /* As an optimization, we could cache the current range of unallocated | |
2465 | * clusters in each file of the chain, and avoid querying the same | |
2466 | * range repeatedly. | |
2467 | */ | |
2468 | ||
2469 | depth = 0; | |
2470 | for (;;) { | |
67a0fd2a FZ |
2471 | ret = bdrv_get_block_status(bs, sector_num, nb_sectors, &nb_sectors, |
2472 | &file); | |
4c93a13b PB |
2473 | if (ret < 0) { |
2474 | return ret; | |
2475 | } | |
2476 | assert(nb_sectors); | |
2477 | if (ret & (BDRV_BLOCK_ZERO|BDRV_BLOCK_DATA)) { | |
2478 | break; | |
2479 | } | |
760e0063 | 2480 | bs = backing_bs(bs); |
4c93a13b PB |
2481 | if (bs == NULL) { |
2482 | ret = 0; | |
2483 | break; | |
2484 | } | |
2485 | ||
2486 | depth++; | |
2487 | } | |
2488 | ||
2875645b JS |
2489 | has_offset = !!(ret & BDRV_BLOCK_OFFSET_VALID); |
2490 | ||
2491 | *e = (MapEntry) { | |
2492 | .start = sector_num * BDRV_SECTOR_SIZE, | |
2493 | .length = nb_sectors * BDRV_SECTOR_SIZE, | |
2494 | .data = !!(ret & BDRV_BLOCK_DATA), | |
2495 | .zero = !!(ret & BDRV_BLOCK_ZERO), | |
2496 | .offset = ret & BDRV_BLOCK_OFFSET_MASK, | |
2497 | .has_offset = has_offset, | |
2498 | .depth = depth, | |
2499 | .has_filename = file && has_offset, | |
2500 | .filename = file && has_offset ? file->filename : NULL, | |
2501 | }; | |
2502 | ||
4c93a13b PB |
2503 | return 0; |
2504 | } | |
2505 | ||
16b0d555 FZ |
2506 | static inline bool entry_mergeable(const MapEntry *curr, const MapEntry *next) |
2507 | { | |
2508 | if (curr->length == 0) { | |
2509 | return false; | |
2510 | } | |
2511 | if (curr->zero != next->zero || | |
2512 | curr->data != next->data || | |
2513 | curr->depth != next->depth || | |
2514 | curr->has_filename != next->has_filename || | |
2515 | curr->has_offset != next->has_offset) { | |
2516 | return false; | |
2517 | } | |
2518 | if (curr->has_filename && strcmp(curr->filename, next->filename)) { | |
2519 | return false; | |
2520 | } | |
2521 | if (curr->has_offset && curr->offset + curr->length != next->offset) { | |
2522 | return false; | |
2523 | } | |
2524 | return true; | |
2525 | } | |
2526 | ||
4c93a13b PB |
2527 | static int img_map(int argc, char **argv) |
2528 | { | |
2529 | int c; | |
2530 | OutputFormat output_format = OFORMAT_HUMAN; | |
26f54e9a | 2531 | BlockBackend *blk; |
4c93a13b PB |
2532 | BlockDriverState *bs; |
2533 | const char *filename, *fmt, *output; | |
2534 | int64_t length; | |
2535 | MapEntry curr = { .length = 0 }, next; | |
2536 | int ret = 0; | |
eb769f74 | 2537 | bool image_opts = false; |
4c93a13b PB |
2538 | |
2539 | fmt = NULL; | |
2540 | output = NULL; | |
2541 | for (;;) { | |
2542 | int option_index = 0; | |
2543 | static const struct option long_options[] = { | |
2544 | {"help", no_argument, 0, 'h'}, | |
2545 | {"format", required_argument, 0, 'f'}, | |
2546 | {"output", required_argument, 0, OPTION_OUTPUT}, | |
3babeb15 | 2547 | {"object", required_argument, 0, OPTION_OBJECT}, |
eb769f74 | 2548 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
4c93a13b PB |
2549 | {0, 0, 0, 0} |
2550 | }; | |
2551 | c = getopt_long(argc, argv, "f:h", | |
2552 | long_options, &option_index); | |
2553 | if (c == -1) { | |
2554 | break; | |
2555 | } | |
2556 | switch (c) { | |
2557 | case '?': | |
2558 | case 'h': | |
2559 | help(); | |
2560 | break; | |
2561 | case 'f': | |
2562 | fmt = optarg; | |
2563 | break; | |
2564 | case OPTION_OUTPUT: | |
2565 | output = optarg; | |
2566 | break; | |
3babeb15 DB |
2567 | case OPTION_OBJECT: { |
2568 | QemuOpts *opts; | |
2569 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
2570 | optarg, true); | |
2571 | if (!opts) { | |
2572 | return 1; | |
2573 | } | |
2574 | } break; | |
eb769f74 DB |
2575 | case OPTION_IMAGE_OPTS: |
2576 | image_opts = true; | |
2577 | break; | |
4c93a13b PB |
2578 | } |
2579 | } | |
ac1307ab FZ |
2580 | if (optind != argc - 1) { |
2581 | error_exit("Expecting one image file name"); | |
4c93a13b | 2582 | } |
ac1307ab | 2583 | filename = argv[optind]; |
4c93a13b PB |
2584 | |
2585 | if (output && !strcmp(output, "json")) { | |
2586 | output_format = OFORMAT_JSON; | |
2587 | } else if (output && !strcmp(output, "human")) { | |
2588 | output_format = OFORMAT_HUMAN; | |
2589 | } else if (output) { | |
2590 | error_report("--output must be used with human or json as argument."); | |
2591 | return 1; | |
2592 | } | |
2593 | ||
3babeb15 DB |
2594 | if (qemu_opts_foreach(&qemu_object_opts, |
2595 | user_creatable_add_opts_foreach, | |
51b9b478 | 2596 | NULL, NULL)) { |
3babeb15 DB |
2597 | return 1; |
2598 | } | |
2599 | ||
ce099547 | 2600 | blk = img_open(image_opts, filename, fmt, 0, false, false); |
7e7d56d9 MA |
2601 | if (!blk) { |
2602 | return 1; | |
4c93a13b | 2603 | } |
7e7d56d9 | 2604 | bs = blk_bs(blk); |
4c93a13b PB |
2605 | |
2606 | if (output_format == OFORMAT_HUMAN) { | |
2607 | printf("%-16s%-16s%-16s%s\n", "Offset", "Length", "Mapped to", "File"); | |
2608 | } | |
2609 | ||
f1d3cd79 | 2610 | length = blk_getlength(blk); |
4c93a13b PB |
2611 | while (curr.start + curr.length < length) { |
2612 | int64_t nsectors_left; | |
2613 | int64_t sector_num; | |
2614 | int n; | |
2615 | ||
2616 | sector_num = (curr.start + curr.length) >> BDRV_SECTOR_BITS; | |
2617 | ||
2618 | /* Probe up to 1 GiB at a time. */ | |
2619 | nsectors_left = DIV_ROUND_UP(length, BDRV_SECTOR_SIZE) - sector_num; | |
2620 | n = MIN(1 << (30 - BDRV_SECTOR_BITS), nsectors_left); | |
2621 | ret = get_block_status(bs, sector_num, n, &next); | |
2622 | ||
2623 | if (ret < 0) { | |
2624 | error_report("Could not read file metadata: %s", strerror(-ret)); | |
2625 | goto out; | |
2626 | } | |
2627 | ||
16b0d555 | 2628 | if (entry_mergeable(&curr, &next)) { |
4c93a13b PB |
2629 | curr.length += next.length; |
2630 | continue; | |
2631 | } | |
2632 | ||
2633 | if (curr.length > 0) { | |
2634 | dump_map_entry(output_format, &curr, &next); | |
2635 | } | |
2636 | curr = next; | |
2637 | } | |
2638 | ||
2639 | dump_map_entry(output_format, &curr, NULL); | |
2640 | ||
2641 | out: | |
26f54e9a | 2642 | blk_unref(blk); |
4c93a13b PB |
2643 | return ret < 0; |
2644 | } | |
2645 | ||
f7b4a940 AL |
2646 | #define SNAPSHOT_LIST 1 |
2647 | #define SNAPSHOT_CREATE 2 | |
2648 | #define SNAPSHOT_APPLY 3 | |
2649 | #define SNAPSHOT_DELETE 4 | |
2650 | ||
153859be | 2651 | static int img_snapshot(int argc, char **argv) |
f7b4a940 | 2652 | { |
26f54e9a | 2653 | BlockBackend *blk; |
f7b4a940 AL |
2654 | BlockDriverState *bs; |
2655 | QEMUSnapshotInfo sn; | |
2656 | char *filename, *snapshot_name = NULL; | |
c2abccec | 2657 | int c, ret = 0, bdrv_oflags; |
f7b4a940 AL |
2658 | int action = 0; |
2659 | qemu_timeval tv; | |
f382d43a | 2660 | bool quiet = false; |
a89d89d3 | 2661 | Error *err = NULL; |
eb769f74 | 2662 | bool image_opts = false; |
f7b4a940 | 2663 | |
ce099547 | 2664 | bdrv_oflags = BDRV_O_RDWR; |
f7b4a940 AL |
2665 | /* Parse commandline parameters */ |
2666 | for(;;) { | |
3babeb15 DB |
2667 | static const struct option long_options[] = { |
2668 | {"help", no_argument, 0, 'h'}, | |
2669 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 2670 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
2671 | {0, 0, 0, 0} |
2672 | }; | |
2673 | c = getopt_long(argc, argv, "la:c:d:hq", | |
2674 | long_options, NULL); | |
b8fb60da | 2675 | if (c == -1) { |
f7b4a940 | 2676 | break; |
b8fb60da | 2677 | } |
f7b4a940 | 2678 | switch(c) { |
ef87394c | 2679 | case '?': |
f7b4a940 AL |
2680 | case 'h': |
2681 | help(); | |
153859be | 2682 | return 0; |
f7b4a940 AL |
2683 | case 'l': |
2684 | if (action) { | |
ac1307ab | 2685 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2686 | return 0; |
f7b4a940 AL |
2687 | } |
2688 | action = SNAPSHOT_LIST; | |
f5edb014 | 2689 | bdrv_oflags &= ~BDRV_O_RDWR; /* no need for RW */ |
f7b4a940 AL |
2690 | break; |
2691 | case 'a': | |
2692 | if (action) { | |
ac1307ab | 2693 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2694 | return 0; |
f7b4a940 AL |
2695 | } |
2696 | action = SNAPSHOT_APPLY; | |
2697 | snapshot_name = optarg; | |
2698 | break; | |
2699 | case 'c': | |
2700 | if (action) { | |
ac1307ab | 2701 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2702 | return 0; |
f7b4a940 AL |
2703 | } |
2704 | action = SNAPSHOT_CREATE; | |
2705 | snapshot_name = optarg; | |
2706 | break; | |
2707 | case 'd': | |
2708 | if (action) { | |
ac1307ab | 2709 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2710 | return 0; |
f7b4a940 AL |
2711 | } |
2712 | action = SNAPSHOT_DELETE; | |
2713 | snapshot_name = optarg; | |
2714 | break; | |
f382d43a MR |
2715 | case 'q': |
2716 | quiet = true; | |
2717 | break; | |
3babeb15 DB |
2718 | case OPTION_OBJECT: { |
2719 | QemuOpts *opts; | |
2720 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
2721 | optarg, true); | |
2722 | if (!opts) { | |
2723 | return 1; | |
2724 | } | |
2725 | } break; | |
eb769f74 DB |
2726 | case OPTION_IMAGE_OPTS: |
2727 | image_opts = true; | |
2728 | break; | |
f7b4a940 AL |
2729 | } |
2730 | } | |
2731 | ||
fc11eb26 | 2732 | if (optind != argc - 1) { |
ac1307ab | 2733 | error_exit("Expecting one image file name"); |
b8fb60da | 2734 | } |
f7b4a940 AL |
2735 | filename = argv[optind++]; |
2736 | ||
3babeb15 DB |
2737 | if (qemu_opts_foreach(&qemu_object_opts, |
2738 | user_creatable_add_opts_foreach, | |
51b9b478 | 2739 | NULL, NULL)) { |
3babeb15 DB |
2740 | return 1; |
2741 | } | |
2742 | ||
f7b4a940 | 2743 | /* Open the image */ |
ce099547 | 2744 | blk = img_open(image_opts, filename, NULL, bdrv_oflags, false, quiet); |
7e7d56d9 MA |
2745 | if (!blk) { |
2746 | return 1; | |
c2abccec | 2747 | } |
7e7d56d9 | 2748 | bs = blk_bs(blk); |
f7b4a940 AL |
2749 | |
2750 | /* Perform the requested action */ | |
2751 | switch(action) { | |
2752 | case SNAPSHOT_LIST: | |
2753 | dump_snapshots(bs); | |
2754 | break; | |
2755 | ||
2756 | case SNAPSHOT_CREATE: | |
2757 | memset(&sn, 0, sizeof(sn)); | |
2758 | pstrcpy(sn.name, sizeof(sn.name), snapshot_name); | |
2759 | ||
2760 | qemu_gettimeofday(&tv); | |
2761 | sn.date_sec = tv.tv_sec; | |
2762 | sn.date_nsec = tv.tv_usec * 1000; | |
2763 | ||
2764 | ret = bdrv_snapshot_create(bs, &sn); | |
b8fb60da | 2765 | if (ret) { |
15654a6d | 2766 | error_report("Could not create snapshot '%s': %d (%s)", |
f7b4a940 | 2767 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 2768 | } |
f7b4a940 AL |
2769 | break; |
2770 | ||
2771 | case SNAPSHOT_APPLY: | |
2772 | ret = bdrv_snapshot_goto(bs, snapshot_name); | |
b8fb60da | 2773 | if (ret) { |
15654a6d | 2774 | error_report("Could not apply snapshot '%s': %d (%s)", |
f7b4a940 | 2775 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 2776 | } |
f7b4a940 AL |
2777 | break; |
2778 | ||
2779 | case SNAPSHOT_DELETE: | |
a89d89d3 | 2780 | bdrv_snapshot_delete_by_id_or_name(bs, snapshot_name, &err); |
84d18f06 | 2781 | if (err) { |
c29b77f9 MA |
2782 | error_reportf_err(err, "Could not delete snapshot '%s': ", |
2783 | snapshot_name); | |
a89d89d3 | 2784 | ret = 1; |
b8fb60da | 2785 | } |
f7b4a940 AL |
2786 | break; |
2787 | } | |
2788 | ||
2789 | /* Cleanup */ | |
26f54e9a | 2790 | blk_unref(blk); |
c2abccec MK |
2791 | if (ret) { |
2792 | return 1; | |
2793 | } | |
153859be | 2794 | return 0; |
f7b4a940 AL |
2795 | } |
2796 | ||
3e85c6fd KW |
2797 | static int img_rebase(int argc, char **argv) |
2798 | { | |
26f54e9a | 2799 | BlockBackend *blk = NULL, *blk_old_backing = NULL, *blk_new_backing = NULL; |
396374ca PB |
2800 | uint8_t *buf_old = NULL; |
2801 | uint8_t *buf_new = NULL; | |
f1d3cd79 | 2802 | BlockDriverState *bs = NULL; |
3e85c6fd | 2803 | char *filename; |
40055951 HR |
2804 | const char *fmt, *cache, *src_cache, *out_basefmt, *out_baseimg; |
2805 | int c, flags, src_flags, ret; | |
ce099547 | 2806 | bool writethrough, src_writethrough; |
3e85c6fd | 2807 | int unsafe = 0; |
6b837bc4 | 2808 | int progress = 0; |
f382d43a | 2809 | bool quiet = false; |
34b5d2c6 | 2810 | Error *local_err = NULL; |
eb769f74 | 2811 | bool image_opts = false; |
3e85c6fd KW |
2812 | |
2813 | /* Parse commandline parameters */ | |
e53dbee0 | 2814 | fmt = NULL; |
661a0f71 | 2815 | cache = BDRV_DEFAULT_CACHE; |
40055951 | 2816 | src_cache = BDRV_DEFAULT_CACHE; |
3e85c6fd KW |
2817 | out_baseimg = NULL; |
2818 | out_basefmt = NULL; | |
3e85c6fd | 2819 | for(;;) { |
3babeb15 DB |
2820 | static const struct option long_options[] = { |
2821 | {"help", no_argument, 0, 'h'}, | |
2822 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 2823 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
2824 | {0, 0, 0, 0} |
2825 | }; | |
2826 | c = getopt_long(argc, argv, "hf:F:b:upt:T:q", | |
2827 | long_options, NULL); | |
b8fb60da | 2828 | if (c == -1) { |
3e85c6fd | 2829 | break; |
b8fb60da | 2830 | } |
3e85c6fd | 2831 | switch(c) { |
ef87394c | 2832 | case '?': |
3e85c6fd KW |
2833 | case 'h': |
2834 | help(); | |
2835 | return 0; | |
e53dbee0 KW |
2836 | case 'f': |
2837 | fmt = optarg; | |
2838 | break; | |
3e85c6fd KW |
2839 | case 'F': |
2840 | out_basefmt = optarg; | |
2841 | break; | |
2842 | case 'b': | |
2843 | out_baseimg = optarg; | |
2844 | break; | |
2845 | case 'u': | |
2846 | unsafe = 1; | |
2847 | break; | |
6b837bc4 JS |
2848 | case 'p': |
2849 | progress = 1; | |
2850 | break; | |
661a0f71 FS |
2851 | case 't': |
2852 | cache = optarg; | |
2853 | break; | |
40055951 HR |
2854 | case 'T': |
2855 | src_cache = optarg; | |
2856 | break; | |
f382d43a MR |
2857 | case 'q': |
2858 | quiet = true; | |
2859 | break; | |
3babeb15 DB |
2860 | case OPTION_OBJECT: { |
2861 | QemuOpts *opts; | |
2862 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
2863 | optarg, true); | |
2864 | if (!opts) { | |
2865 | return 1; | |
2866 | } | |
2867 | } break; | |
eb769f74 DB |
2868 | case OPTION_IMAGE_OPTS: |
2869 | image_opts = true; | |
2870 | break; | |
3e85c6fd KW |
2871 | } |
2872 | } | |
2873 | ||
f382d43a MR |
2874 | if (quiet) { |
2875 | progress = 0; | |
2876 | } | |
2877 | ||
ac1307ab FZ |
2878 | if (optind != argc - 1) { |
2879 | error_exit("Expecting one image file name"); | |
2880 | } | |
2881 | if (!unsafe && !out_baseimg) { | |
2882 | error_exit("Must specify backing file (-b) or use unsafe mode (-u)"); | |
b8fb60da | 2883 | } |
3e85c6fd KW |
2884 | filename = argv[optind++]; |
2885 | ||
3babeb15 DB |
2886 | if (qemu_opts_foreach(&qemu_object_opts, |
2887 | user_creatable_add_opts_foreach, | |
51b9b478 | 2888 | NULL, NULL)) { |
3babeb15 DB |
2889 | return 1; |
2890 | } | |
2891 | ||
6b837bc4 JS |
2892 | qemu_progress_init(progress, 2.0); |
2893 | qemu_progress_print(0, 100); | |
2894 | ||
661a0f71 | 2895 | flags = BDRV_O_RDWR | (unsafe ? BDRV_O_NO_BACKING : 0); |
ce099547 | 2896 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); |
661a0f71 FS |
2897 | if (ret < 0) { |
2898 | error_report("Invalid cache option: %s", cache); | |
40ed35a3 | 2899 | goto out; |
661a0f71 FS |
2900 | } |
2901 | ||
ce099547 KW |
2902 | src_flags = 0; |
2903 | ret = bdrv_parse_cache_mode(src_cache, &src_flags, &src_writethrough); | |
40055951 HR |
2904 | if (ret < 0) { |
2905 | error_report("Invalid source cache option: %s", src_cache); | |
40ed35a3 | 2906 | goto out; |
40055951 HR |
2907 | } |
2908 | ||
ce099547 KW |
2909 | /* The source files are opened read-only, don't care about WCE */ |
2910 | assert((src_flags & BDRV_O_RDWR) == 0); | |
2911 | (void) src_writethrough; | |
2912 | ||
3e85c6fd KW |
2913 | /* |
2914 | * Open the images. | |
2915 | * | |
2916 | * Ignore the old backing file for unsafe rebase in case we want to correct | |
2917 | * the reference to a renamed or moved backing file. | |
2918 | */ | |
ce099547 | 2919 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet); |
7e7d56d9 | 2920 | if (!blk) { |
40ed35a3 SH |
2921 | ret = -1; |
2922 | goto out; | |
c2abccec | 2923 | } |
7e7d56d9 | 2924 | bs = blk_bs(blk); |
3e85c6fd | 2925 | |
3e85c6fd | 2926 | if (out_basefmt != NULL) { |
644483d9 | 2927 | if (bdrv_find_format(out_basefmt) == NULL) { |
15654a6d | 2928 | error_report("Invalid format name: '%s'", out_basefmt); |
c2abccec MK |
2929 | ret = -1; |
2930 | goto out; | |
3e85c6fd KW |
2931 | } |
2932 | } | |
2933 | ||
2934 | /* For safe rebasing we need to compare old and new backing file */ | |
40ed35a3 | 2935 | if (!unsafe) { |
9a29e18f | 2936 | char backing_name[PATH_MAX]; |
644483d9 HR |
2937 | QDict *options = NULL; |
2938 | ||
2939 | if (bs->backing_format[0] != '\0') { | |
2940 | options = qdict_new(); | |
2941 | qdict_put(options, "driver", qstring_from_str(bs->backing_format)); | |
2942 | } | |
3e85c6fd | 2943 | |
3e85c6fd | 2944 | bdrv_get_backing_filename(bs, backing_name, sizeof(backing_name)); |
efaa7c4e | 2945 | blk_old_backing = blk_new_open(backing_name, NULL, |
644483d9 HR |
2946 | options, src_flags, &local_err); |
2947 | if (!blk_old_backing) { | |
c29b77f9 MA |
2948 | error_reportf_err(local_err, |
2949 | "Could not open old backing file '%s': ", | |
2950 | backing_name); | |
c2abccec | 2951 | goto out; |
3e85c6fd | 2952 | } |
644483d9 | 2953 | |
a616673d | 2954 | if (out_baseimg[0]) { |
644483d9 HR |
2955 | if (out_basefmt) { |
2956 | options = qdict_new(); | |
2957 | qdict_put(options, "driver", qstring_from_str(out_basefmt)); | |
2958 | } else { | |
2959 | options = NULL; | |
2960 | } | |
2961 | ||
efaa7c4e | 2962 | blk_new_backing = blk_new_open(out_baseimg, NULL, |
644483d9 HR |
2963 | options, src_flags, &local_err); |
2964 | if (!blk_new_backing) { | |
c29b77f9 MA |
2965 | error_reportf_err(local_err, |
2966 | "Could not open new backing file '%s': ", | |
2967 | out_baseimg); | |
a616673d AB |
2968 | goto out; |
2969 | } | |
3e85c6fd KW |
2970 | } |
2971 | } | |
2972 | ||
2973 | /* | |
2974 | * Check each unallocated cluster in the COW file. If it is unallocated, | |
2975 | * accesses go to the backing file. We must therefore compare this cluster | |
2976 | * in the old and new backing file, and if they differ we need to copy it | |
2977 | * from the old backing file into the COW file. | |
2978 | * | |
2979 | * If qemu-img crashes during this step, no harm is done. The content of | |
2980 | * the image is the same as the original one at any time. | |
2981 | */ | |
2982 | if (!unsafe) { | |
52bf1e72 MA |
2983 | int64_t num_sectors; |
2984 | int64_t old_backing_num_sectors; | |
2985 | int64_t new_backing_num_sectors = 0; | |
3e85c6fd | 2986 | uint64_t sector; |
cc60e327 | 2987 | int n; |
1f710495 | 2988 | float local_progress = 0; |
d6771bfa | 2989 | |
f1d3cd79 HR |
2990 | buf_old = blk_blockalign(blk, IO_BUF_SIZE); |
2991 | buf_new = blk_blockalign(blk, IO_BUF_SIZE); | |
3e85c6fd | 2992 | |
f1d3cd79 | 2993 | num_sectors = blk_nb_sectors(blk); |
52bf1e72 MA |
2994 | if (num_sectors < 0) { |
2995 | error_report("Could not get size of '%s': %s", | |
2996 | filename, strerror(-num_sectors)); | |
2997 | ret = -1; | |
2998 | goto out; | |
2999 | } | |
f1d3cd79 | 3000 | old_backing_num_sectors = blk_nb_sectors(blk_old_backing); |
52bf1e72 | 3001 | if (old_backing_num_sectors < 0) { |
9a29e18f | 3002 | char backing_name[PATH_MAX]; |
52bf1e72 MA |
3003 | |
3004 | bdrv_get_backing_filename(bs, backing_name, sizeof(backing_name)); | |
3005 | error_report("Could not get size of '%s': %s", | |
3006 | backing_name, strerror(-old_backing_num_sectors)); | |
3007 | ret = -1; | |
3008 | goto out; | |
3009 | } | |
f1d3cd79 HR |
3010 | if (blk_new_backing) { |
3011 | new_backing_num_sectors = blk_nb_sectors(blk_new_backing); | |
52bf1e72 MA |
3012 | if (new_backing_num_sectors < 0) { |
3013 | error_report("Could not get size of '%s': %s", | |
3014 | out_baseimg, strerror(-new_backing_num_sectors)); | |
3015 | ret = -1; | |
3016 | goto out; | |
3017 | } | |
a616673d | 3018 | } |
3e85c6fd | 3019 | |
1f710495 KW |
3020 | if (num_sectors != 0) { |
3021 | local_progress = (float)100 / | |
3022 | (num_sectors / MIN(num_sectors, IO_BUF_SIZE / 512)); | |
3023 | } | |
3024 | ||
3e85c6fd KW |
3025 | for (sector = 0; sector < num_sectors; sector += n) { |
3026 | ||
3027 | /* How many sectors can we handle with the next read? */ | |
3028 | if (sector + (IO_BUF_SIZE / 512) <= num_sectors) { | |
3029 | n = (IO_BUF_SIZE / 512); | |
3030 | } else { | |
3031 | n = num_sectors - sector; | |
3032 | } | |
3033 | ||
3034 | /* If the cluster is allocated, we don't need to take action */ | |
cc60e327 | 3035 | ret = bdrv_is_allocated(bs, sector, n, &n); |
d663640c PB |
3036 | if (ret < 0) { |
3037 | error_report("error while reading image metadata: %s", | |
3038 | strerror(-ret)); | |
3039 | goto out; | |
3040 | } | |
cc60e327 | 3041 | if (ret) { |
3e85c6fd KW |
3042 | continue; |
3043 | } | |
3044 | ||
87a1b3e3 KW |
3045 | /* |
3046 | * Read old and new backing file and take into consideration that | |
3047 | * backing files may be smaller than the COW image. | |
3048 | */ | |
3049 | if (sector >= old_backing_num_sectors) { | |
3050 | memset(buf_old, 0, n * BDRV_SECTOR_SIZE); | |
3051 | } else { | |
3052 | if (sector + n > old_backing_num_sectors) { | |
3053 | n = old_backing_num_sectors - sector; | |
3054 | } | |
3055 | ||
9166920a EB |
3056 | ret = blk_pread(blk_old_backing, sector << BDRV_SECTOR_BITS, |
3057 | buf_old, n << BDRV_SECTOR_BITS); | |
87a1b3e3 KW |
3058 | if (ret < 0) { |
3059 | error_report("error while reading from old backing file"); | |
3060 | goto out; | |
3061 | } | |
3e85c6fd | 3062 | } |
87a1b3e3 | 3063 | |
f1d3cd79 | 3064 | if (sector >= new_backing_num_sectors || !blk_new_backing) { |
87a1b3e3 KW |
3065 | memset(buf_new, 0, n * BDRV_SECTOR_SIZE); |
3066 | } else { | |
3067 | if (sector + n > new_backing_num_sectors) { | |
3068 | n = new_backing_num_sectors - sector; | |
3069 | } | |
3070 | ||
9166920a EB |
3071 | ret = blk_pread(blk_new_backing, sector << BDRV_SECTOR_BITS, |
3072 | buf_new, n << BDRV_SECTOR_BITS); | |
87a1b3e3 KW |
3073 | if (ret < 0) { |
3074 | error_report("error while reading from new backing file"); | |
3075 | goto out; | |
3076 | } | |
3e85c6fd KW |
3077 | } |
3078 | ||
3079 | /* If they differ, we need to write to the COW file */ | |
3080 | uint64_t written = 0; | |
3081 | ||
3082 | while (written < n) { | |
3083 | int pnum; | |
3084 | ||
3085 | if (compare_sectors(buf_old + written * 512, | |
60b1bd4f | 3086 | buf_new + written * 512, n - written, &pnum)) |
3e85c6fd | 3087 | { |
9166920a EB |
3088 | ret = blk_pwrite(blk, |
3089 | (sector + written) << BDRV_SECTOR_BITS, | |
3090 | buf_old + written * 512, | |
3091 | pnum << BDRV_SECTOR_BITS, 0); | |
3e85c6fd | 3092 | if (ret < 0) { |
15654a6d | 3093 | error_report("Error while writing to COW image: %s", |
3e85c6fd | 3094 | strerror(-ret)); |
c2abccec | 3095 | goto out; |
3e85c6fd KW |
3096 | } |
3097 | } | |
3098 | ||
3099 | written += pnum; | |
3100 | } | |
6b837bc4 | 3101 | qemu_progress_print(local_progress, 100); |
3e85c6fd KW |
3102 | } |
3103 | } | |
3104 | ||
3105 | /* | |
3106 | * Change the backing file. All clusters that are different from the old | |
3107 | * backing file are overwritten in the COW file now, so the visible content | |
3108 | * doesn't change when we switch the backing file. | |
3109 | */ | |
a616673d AB |
3110 | if (out_baseimg && *out_baseimg) { |
3111 | ret = bdrv_change_backing_file(bs, out_baseimg, out_basefmt); | |
3112 | } else { | |
3113 | ret = bdrv_change_backing_file(bs, NULL, NULL); | |
3114 | } | |
3115 | ||
3e85c6fd | 3116 | if (ret == -ENOSPC) { |
15654a6d JS |
3117 | error_report("Could not change the backing file to '%s': No " |
3118 | "space left in the file header", out_baseimg); | |
3e85c6fd | 3119 | } else if (ret < 0) { |
15654a6d | 3120 | error_report("Could not change the backing file to '%s': %s", |
3e85c6fd KW |
3121 | out_baseimg, strerror(-ret)); |
3122 | } | |
3123 | ||
6b837bc4 | 3124 | qemu_progress_print(100, 0); |
3e85c6fd KW |
3125 | /* |
3126 | * TODO At this point it is possible to check if any clusters that are | |
3127 | * allocated in the COW file are the same in the backing file. If so, they | |
3128 | * could be dropped from the COW file. Don't do this before switching the | |
3129 | * backing file, in case of a crash this would lead to corruption. | |
3130 | */ | |
c2abccec | 3131 | out: |
6b837bc4 | 3132 | qemu_progress_end(); |
3e85c6fd KW |
3133 | /* Cleanup */ |
3134 | if (!unsafe) { | |
26f54e9a | 3135 | blk_unref(blk_old_backing); |
26f54e9a | 3136 | blk_unref(blk_new_backing); |
3e85c6fd | 3137 | } |
396374ca PB |
3138 | qemu_vfree(buf_old); |
3139 | qemu_vfree(buf_new); | |
3e85c6fd | 3140 | |
26f54e9a | 3141 | blk_unref(blk); |
c2abccec MK |
3142 | if (ret) { |
3143 | return 1; | |
3144 | } | |
3e85c6fd KW |
3145 | return 0; |
3146 | } | |
3147 | ||
ae6b0ed6 SH |
3148 | static int img_resize(int argc, char **argv) |
3149 | { | |
6750e795 | 3150 | Error *err = NULL; |
ae6b0ed6 SH |
3151 | int c, ret, relative; |
3152 | const char *filename, *fmt, *size; | |
3153 | int64_t n, total_size; | |
f382d43a | 3154 | bool quiet = false; |
26f54e9a | 3155 | BlockBackend *blk = NULL; |
20caf0f7 | 3156 | QemuOpts *param; |
3babeb15 | 3157 | |
20caf0f7 DXW |
3158 | static QemuOptsList resize_options = { |
3159 | .name = "resize_options", | |
3160 | .head = QTAILQ_HEAD_INITIALIZER(resize_options.head), | |
3161 | .desc = { | |
3162 | { | |
3163 | .name = BLOCK_OPT_SIZE, | |
3164 | .type = QEMU_OPT_SIZE, | |
3165 | .help = "Virtual disk size" | |
3166 | }, { | |
3167 | /* end of list */ | |
3168 | } | |
ae6b0ed6 | 3169 | }, |
ae6b0ed6 | 3170 | }; |
eb769f74 | 3171 | bool image_opts = false; |
ae6b0ed6 | 3172 | |
e80fec7f KW |
3173 | /* Remove size from argv manually so that negative numbers are not treated |
3174 | * as options by getopt. */ | |
3175 | if (argc < 3) { | |
ac1307ab | 3176 | error_exit("Not enough arguments"); |
e80fec7f KW |
3177 | return 1; |
3178 | } | |
3179 | ||
3180 | size = argv[--argc]; | |
3181 | ||
3182 | /* Parse getopt arguments */ | |
ae6b0ed6 SH |
3183 | fmt = NULL; |
3184 | for(;;) { | |
3babeb15 DB |
3185 | static const struct option long_options[] = { |
3186 | {"help", no_argument, 0, 'h'}, | |
3187 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 3188 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
3189 | {0, 0, 0, 0} |
3190 | }; | |
3191 | c = getopt_long(argc, argv, "f:hq", | |
3192 | long_options, NULL); | |
ae6b0ed6 SH |
3193 | if (c == -1) { |
3194 | break; | |
3195 | } | |
3196 | switch(c) { | |
ef87394c | 3197 | case '?': |
ae6b0ed6 SH |
3198 | case 'h': |
3199 | help(); | |
3200 | break; | |
3201 | case 'f': | |
3202 | fmt = optarg; | |
3203 | break; | |
f382d43a MR |
3204 | case 'q': |
3205 | quiet = true; | |
3206 | break; | |
3babeb15 DB |
3207 | case OPTION_OBJECT: { |
3208 | QemuOpts *opts; | |
3209 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
3210 | optarg, true); | |
3211 | if (!opts) { | |
3212 | return 1; | |
3213 | } | |
3214 | } break; | |
eb769f74 DB |
3215 | case OPTION_IMAGE_OPTS: |
3216 | image_opts = true; | |
3217 | break; | |
ae6b0ed6 SH |
3218 | } |
3219 | } | |
fc11eb26 | 3220 | if (optind != argc - 1) { |
ac1307ab | 3221 | error_exit("Expecting one image file name"); |
ae6b0ed6 SH |
3222 | } |
3223 | filename = argv[optind++]; | |
ae6b0ed6 | 3224 | |
3babeb15 DB |
3225 | if (qemu_opts_foreach(&qemu_object_opts, |
3226 | user_creatable_add_opts_foreach, | |
51b9b478 | 3227 | NULL, NULL)) { |
3babeb15 DB |
3228 | return 1; |
3229 | } | |
3230 | ||
ae6b0ed6 SH |
3231 | /* Choose grow, shrink, or absolute resize mode */ |
3232 | switch (size[0]) { | |
3233 | case '+': | |
3234 | relative = 1; | |
3235 | size++; | |
3236 | break; | |
3237 | case '-': | |
3238 | relative = -1; | |
3239 | size++; | |
3240 | break; | |
3241 | default: | |
3242 | relative = 0; | |
3243 | break; | |
3244 | } | |
3245 | ||
3246 | /* Parse size */ | |
87ea75d5 | 3247 | param = qemu_opts_create(&resize_options, NULL, 0, &error_abort); |
f43e47db | 3248 | qemu_opt_set(param, BLOCK_OPT_SIZE, size, &err); |
6750e795 MA |
3249 | if (err) { |
3250 | error_report_err(err); | |
2a81998a | 3251 | ret = -1; |
20caf0f7 | 3252 | qemu_opts_del(param); |
2a81998a | 3253 | goto out; |
ae6b0ed6 | 3254 | } |
20caf0f7 DXW |
3255 | n = qemu_opt_get_size(param, BLOCK_OPT_SIZE, 0); |
3256 | qemu_opts_del(param); | |
ae6b0ed6 | 3257 | |
efaa7c4e | 3258 | blk = img_open(image_opts, filename, fmt, |
ce099547 | 3259 | BDRV_O_RDWR, false, quiet); |
7e7d56d9 | 3260 | if (!blk) { |
2a81998a JS |
3261 | ret = -1; |
3262 | goto out; | |
c2abccec | 3263 | } |
ae6b0ed6 SH |
3264 | |
3265 | if (relative) { | |
f1d3cd79 | 3266 | total_size = blk_getlength(blk) + n * relative; |
ae6b0ed6 SH |
3267 | } else { |
3268 | total_size = n; | |
3269 | } | |
3270 | if (total_size <= 0) { | |
15654a6d | 3271 | error_report("New image size must be positive"); |
c2abccec MK |
3272 | ret = -1; |
3273 | goto out; | |
ae6b0ed6 SH |
3274 | } |
3275 | ||
f1d3cd79 | 3276 | ret = blk_truncate(blk, total_size); |
ae6b0ed6 SH |
3277 | switch (ret) { |
3278 | case 0: | |
f382d43a | 3279 | qprintf(quiet, "Image resized.\n"); |
ae6b0ed6 SH |
3280 | break; |
3281 | case -ENOTSUP: | |
259b2173 | 3282 | error_report("This image does not support resize"); |
ae6b0ed6 SH |
3283 | break; |
3284 | case -EACCES: | |
15654a6d | 3285 | error_report("Image is read-only"); |
ae6b0ed6 SH |
3286 | break; |
3287 | default: | |
15654a6d | 3288 | error_report("Error resizing image (%d)", -ret); |
ae6b0ed6 SH |
3289 | break; |
3290 | } | |
c2abccec | 3291 | out: |
26f54e9a | 3292 | blk_unref(blk); |
c2abccec MK |
3293 | if (ret) { |
3294 | return 1; | |
3295 | } | |
ae6b0ed6 SH |
3296 | return 0; |
3297 | } | |
3298 | ||
76a3a34d | 3299 | static void amend_status_cb(BlockDriverState *bs, |
8b13976d HR |
3300 | int64_t offset, int64_t total_work_size, |
3301 | void *opaque) | |
76a3a34d HR |
3302 | { |
3303 | qemu_progress_print(100.f * offset / total_work_size, 0); | |
3304 | } | |
3305 | ||
6f176b48 HR |
3306 | static int img_amend(int argc, char **argv) |
3307 | { | |
dc523cd3 | 3308 | Error *err = NULL; |
6f176b48 HR |
3309 | int c, ret = 0; |
3310 | char *options = NULL; | |
83d0521a CL |
3311 | QemuOptsList *create_opts = NULL; |
3312 | QemuOpts *opts = NULL; | |
bd39e6ed HR |
3313 | const char *fmt = NULL, *filename, *cache; |
3314 | int flags; | |
ce099547 | 3315 | bool writethrough; |
76a3a34d | 3316 | bool quiet = false, progress = false; |
26f54e9a | 3317 | BlockBackend *blk = NULL; |
6f176b48 | 3318 | BlockDriverState *bs = NULL; |
eb769f74 | 3319 | bool image_opts = false; |
6f176b48 | 3320 | |
bd39e6ed | 3321 | cache = BDRV_DEFAULT_CACHE; |
6f176b48 | 3322 | for (;;) { |
3babeb15 DB |
3323 | static const struct option long_options[] = { |
3324 | {"help", no_argument, 0, 'h'}, | |
3325 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 3326 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
3327 | {0, 0, 0, 0} |
3328 | }; | |
3329 | c = getopt_long(argc, argv, "ho:f:t:pq", | |
3330 | long_options, NULL); | |
6f176b48 HR |
3331 | if (c == -1) { |
3332 | break; | |
3333 | } | |
3334 | ||
3335 | switch (c) { | |
3336 | case 'h': | |
3337 | case '?': | |
3338 | help(); | |
3339 | break; | |
3340 | case 'o': | |
626f84f3 KW |
3341 | if (!is_valid_option_list(optarg)) { |
3342 | error_report("Invalid option list: %s", optarg); | |
3343 | ret = -1; | |
e814dffc | 3344 | goto out_no_progress; |
626f84f3 KW |
3345 | } |
3346 | if (!options) { | |
3347 | options = g_strdup(optarg); | |
3348 | } else { | |
3349 | char *old_options = options; | |
3350 | options = g_strdup_printf("%s,%s", options, optarg); | |
3351 | g_free(old_options); | |
3352 | } | |
6f176b48 HR |
3353 | break; |
3354 | case 'f': | |
3355 | fmt = optarg; | |
3356 | break; | |
bd39e6ed HR |
3357 | case 't': |
3358 | cache = optarg; | |
3359 | break; | |
76a3a34d HR |
3360 | case 'p': |
3361 | progress = true; | |
3362 | break; | |
6f176b48 HR |
3363 | case 'q': |
3364 | quiet = true; | |
3365 | break; | |
3babeb15 DB |
3366 | case OPTION_OBJECT: |
3367 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
3368 | optarg, true); | |
3369 | if (!opts) { | |
3370 | ret = -1; | |
3371 | goto out_no_progress; | |
3372 | } | |
3373 | break; | |
eb769f74 DB |
3374 | case OPTION_IMAGE_OPTS: |
3375 | image_opts = true; | |
3376 | break; | |
6f176b48 HR |
3377 | } |
3378 | } | |
3379 | ||
a283cb6e | 3380 | if (!options) { |
ac1307ab | 3381 | error_exit("Must specify options (-o)"); |
6f176b48 HR |
3382 | } |
3383 | ||
3babeb15 DB |
3384 | if (qemu_opts_foreach(&qemu_object_opts, |
3385 | user_creatable_add_opts_foreach, | |
51b9b478 | 3386 | NULL, NULL)) { |
3babeb15 DB |
3387 | ret = -1; |
3388 | goto out_no_progress; | |
3389 | } | |
3390 | ||
76a3a34d HR |
3391 | if (quiet) { |
3392 | progress = false; | |
3393 | } | |
3394 | qemu_progress_init(progress, 1.0); | |
3395 | ||
a283cb6e KW |
3396 | filename = (optind == argc - 1) ? argv[argc - 1] : NULL; |
3397 | if (fmt && has_help_option(options)) { | |
3398 | /* If a format is explicitly specified (and possibly no filename is | |
3399 | * given), print option help here */ | |
3400 | ret = print_block_option_help(filename, fmt); | |
3401 | goto out; | |
6f176b48 HR |
3402 | } |
3403 | ||
a283cb6e | 3404 | if (optind != argc - 1) { |
b2f27e44 HR |
3405 | error_report("Expecting one image file name"); |
3406 | ret = -1; | |
3407 | goto out; | |
a283cb6e | 3408 | } |
6f176b48 | 3409 | |
ce099547 KW |
3410 | flags = BDRV_O_RDWR; |
3411 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); | |
bd39e6ed HR |
3412 | if (ret < 0) { |
3413 | error_report("Invalid cache option: %s", cache); | |
3414 | goto out; | |
3415 | } | |
3416 | ||
ce099547 | 3417 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet); |
7e7d56d9 | 3418 | if (!blk) { |
6f176b48 HR |
3419 | ret = -1; |
3420 | goto out; | |
3421 | } | |
7e7d56d9 | 3422 | bs = blk_bs(blk); |
6f176b48 HR |
3423 | |
3424 | fmt = bs->drv->format_name; | |
3425 | ||
626f84f3 | 3426 | if (has_help_option(options)) { |
a283cb6e | 3427 | /* If the format was auto-detected, print option help here */ |
6f176b48 HR |
3428 | ret = print_block_option_help(filename, fmt); |
3429 | goto out; | |
3430 | } | |
3431 | ||
b2439d26 HR |
3432 | if (!bs->drv->create_opts) { |
3433 | error_report("Format driver '%s' does not support any options to amend", | |
3434 | fmt); | |
3435 | ret = -1; | |
3436 | goto out; | |
3437 | } | |
3438 | ||
c282e1fd | 3439 | create_opts = qemu_opts_append(create_opts, bs->drv->create_opts); |
83d0521a | 3440 | opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); |
dc523cd3 MA |
3441 | if (options) { |
3442 | qemu_opts_do_parse(opts, options, NULL, &err); | |
3443 | if (err) { | |
97a2ca7a | 3444 | error_report_err(err); |
dc523cd3 MA |
3445 | ret = -1; |
3446 | goto out; | |
3447 | } | |
6f176b48 HR |
3448 | } |
3449 | ||
76a3a34d HR |
3450 | /* In case the driver does not call amend_status_cb() */ |
3451 | qemu_progress_print(0.f, 0); | |
8b13976d | 3452 | ret = bdrv_amend_options(bs, opts, &amend_status_cb, NULL); |
76a3a34d | 3453 | qemu_progress_print(100.f, 0); |
6f176b48 HR |
3454 | if (ret < 0) { |
3455 | error_report("Error while amending options: %s", strerror(-ret)); | |
3456 | goto out; | |
3457 | } | |
3458 | ||
3459 | out: | |
76a3a34d HR |
3460 | qemu_progress_end(); |
3461 | ||
e814dffc | 3462 | out_no_progress: |
26f54e9a | 3463 | blk_unref(blk); |
83d0521a CL |
3464 | qemu_opts_del(opts); |
3465 | qemu_opts_free(create_opts); | |
626f84f3 KW |
3466 | g_free(options); |
3467 | ||
6f176b48 HR |
3468 | if (ret) { |
3469 | return 1; | |
3470 | } | |
3471 | return 0; | |
3472 | } | |
3473 | ||
b6133b8c KW |
3474 | typedef struct BenchData { |
3475 | BlockBackend *blk; | |
3476 | uint64_t image_size; | |
b6495fa8 | 3477 | bool write; |
b6133b8c | 3478 | int bufsize; |
83de9be0 | 3479 | int step; |
b6133b8c KW |
3480 | int nrreq; |
3481 | int n; | |
55d539c8 KW |
3482 | int flush_interval; |
3483 | bool drain_on_flush; | |
b6133b8c KW |
3484 | uint8_t *buf; |
3485 | QEMUIOVector *qiov; | |
3486 | ||
3487 | int in_flight; | |
55d539c8 | 3488 | bool in_flush; |
b6133b8c KW |
3489 | uint64_t offset; |
3490 | } BenchData; | |
3491 | ||
55d539c8 KW |
3492 | static void bench_undrained_flush_cb(void *opaque, int ret) |
3493 | { | |
3494 | if (ret < 0) { | |
3495 | error_report("Failed flush request: %s\n", strerror(-ret)); | |
3496 | exit(EXIT_FAILURE); | |
3497 | } | |
3498 | } | |
3499 | ||
b6133b8c KW |
3500 | static void bench_cb(void *opaque, int ret) |
3501 | { | |
3502 | BenchData *b = opaque; | |
3503 | BlockAIOCB *acb; | |
3504 | ||
3505 | if (ret < 0) { | |
3506 | error_report("Failed request: %s\n", strerror(-ret)); | |
3507 | exit(EXIT_FAILURE); | |
3508 | } | |
55d539c8 KW |
3509 | |
3510 | if (b->in_flush) { | |
3511 | /* Just finished a flush with drained queue: Start next requests */ | |
3512 | assert(b->in_flight == 0); | |
3513 | b->in_flush = false; | |
3514 | } else if (b->in_flight > 0) { | |
3515 | int remaining = b->n - b->in_flight; | |
3516 | ||
b6133b8c KW |
3517 | b->n--; |
3518 | b->in_flight--; | |
55d539c8 KW |
3519 | |
3520 | /* Time for flush? Drain queue if requested, then flush */ | |
3521 | if (b->flush_interval && remaining % b->flush_interval == 0) { | |
3522 | if (!b->in_flight || !b->drain_on_flush) { | |
3523 | BlockCompletionFunc *cb; | |
3524 | ||
3525 | if (b->drain_on_flush) { | |
3526 | b->in_flush = true; | |
3527 | cb = bench_cb; | |
3528 | } else { | |
3529 | cb = bench_undrained_flush_cb; | |
3530 | } | |
3531 | ||
3532 | acb = blk_aio_flush(b->blk, cb, b); | |
3533 | if (!acb) { | |
3534 | error_report("Failed to issue flush request"); | |
3535 | exit(EXIT_FAILURE); | |
3536 | } | |
3537 | } | |
3538 | if (b->drain_on_flush) { | |
3539 | return; | |
3540 | } | |
3541 | } | |
b6133b8c KW |
3542 | } |
3543 | ||
3544 | while (b->n > b->in_flight && b->in_flight < b->nrreq) { | |
b6495fa8 KW |
3545 | if (b->write) { |
3546 | acb = blk_aio_pwritev(b->blk, b->offset, b->qiov, 0, | |
3547 | bench_cb, b); | |
3548 | } else { | |
3549 | acb = blk_aio_preadv(b->blk, b->offset, b->qiov, 0, | |
3550 | bench_cb, b); | |
3551 | } | |
b6133b8c KW |
3552 | if (!acb) { |
3553 | error_report("Failed to issue request"); | |
3554 | exit(EXIT_FAILURE); | |
3555 | } | |
3556 | b->in_flight++; | |
83de9be0 | 3557 | b->offset += b->step; |
b6133b8c KW |
3558 | b->offset %= b->image_size; |
3559 | } | |
3560 | } | |
3561 | ||
3562 | static int img_bench(int argc, char **argv) | |
3563 | { | |
3564 | int c, ret = 0; | |
3565 | const char *fmt = NULL, *filename; | |
3566 | bool quiet = false; | |
3567 | bool image_opts = false; | |
b6495fa8 | 3568 | bool is_write = false; |
b6133b8c KW |
3569 | int count = 75000; |
3570 | int depth = 64; | |
d3199a31 | 3571 | int64_t offset = 0; |
b6133b8c | 3572 | size_t bufsize = 4096; |
b6495fa8 | 3573 | int pattern = 0; |
83de9be0 | 3574 | size_t step = 0; |
55d539c8 KW |
3575 | int flush_interval = 0; |
3576 | bool drain_on_flush = true; | |
b6133b8c KW |
3577 | int64_t image_size; |
3578 | BlockBackend *blk = NULL; | |
3579 | BenchData data = {}; | |
3580 | int flags = 0; | |
604e8613 | 3581 | bool writethrough = false; |
b6133b8c KW |
3582 | struct timeval t1, t2; |
3583 | int i; | |
3584 | ||
3585 | for (;;) { | |
3586 | static const struct option long_options[] = { | |
3587 | {"help", no_argument, 0, 'h'}, | |
55d539c8 | 3588 | {"flush-interval", required_argument, 0, OPTION_FLUSH_INTERVAL}, |
b6133b8c | 3589 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
b6495fa8 | 3590 | {"pattern", required_argument, 0, OPTION_PATTERN}, |
55d539c8 | 3591 | {"no-drain", no_argument, 0, OPTION_NO_DRAIN}, |
b6133b8c KW |
3592 | {0, 0, 0, 0} |
3593 | }; | |
83de9be0 | 3594 | c = getopt_long(argc, argv, "hc:d:f:no:qs:S:t:w", long_options, NULL); |
b6133b8c KW |
3595 | if (c == -1) { |
3596 | break; | |
3597 | } | |
3598 | ||
3599 | switch (c) { | |
3600 | case 'h': | |
3601 | case '?': | |
3602 | help(); | |
3603 | break; | |
3604 | case 'c': | |
3605 | { | |
3606 | char *end; | |
3607 | errno = 0; | |
3608 | count = strtoul(optarg, &end, 0); | |
3609 | if (errno || *end || count > INT_MAX) { | |
3610 | error_report("Invalid request count specified"); | |
3611 | return 1; | |
3612 | } | |
3613 | break; | |
3614 | } | |
3615 | case 'd': | |
3616 | { | |
3617 | char *end; | |
3618 | errno = 0; | |
3619 | depth = strtoul(optarg, &end, 0); | |
3620 | if (errno || *end || depth > INT_MAX) { | |
3621 | error_report("Invalid queue depth specified"); | |
3622 | return 1; | |
3623 | } | |
3624 | break; | |
3625 | } | |
3626 | case 'f': | |
3627 | fmt = optarg; | |
3628 | break; | |
3629 | case 'n': | |
3630 | flags |= BDRV_O_NATIVE_AIO; | |
3631 | break; | |
d3199a31 KW |
3632 | case 'o': |
3633 | { | |
3634 | char *end; | |
3635 | errno = 0; | |
3636 | offset = qemu_strtosz_suffix(optarg, &end, | |
3637 | QEMU_STRTOSZ_DEFSUFFIX_B); | |
3638 | if (offset < 0|| *end) { | |
3639 | error_report("Invalid offset specified"); | |
3640 | return 1; | |
3641 | } | |
3642 | break; | |
3643 | } | |
3644 | break; | |
b6133b8c KW |
3645 | case 'q': |
3646 | quiet = true; | |
3647 | break; | |
3648 | case 's': | |
3649 | { | |
3650 | int64_t sval; | |
3651 | char *end; | |
3652 | ||
3653 | sval = qemu_strtosz_suffix(optarg, &end, QEMU_STRTOSZ_DEFSUFFIX_B); | |
3654 | if (sval < 0 || sval > INT_MAX || *end) { | |
3655 | error_report("Invalid buffer size specified"); | |
3656 | return 1; | |
3657 | } | |
3658 | ||
3659 | bufsize = sval; | |
3660 | break; | |
3661 | } | |
83de9be0 KW |
3662 | case 'S': |
3663 | { | |
3664 | int64_t sval; | |
3665 | char *end; | |
3666 | ||
3667 | sval = qemu_strtosz_suffix(optarg, &end, QEMU_STRTOSZ_DEFSUFFIX_B); | |
3668 | if (sval < 0 || sval > INT_MAX || *end) { | |
3669 | error_report("Invalid step size specified"); | |
3670 | return 1; | |
3671 | } | |
3672 | ||
3673 | step = sval; | |
3674 | break; | |
3675 | } | |
b6133b8c KW |
3676 | case 't': |
3677 | ret = bdrv_parse_cache_mode(optarg, &flags, &writethrough); | |
3678 | if (ret < 0) { | |
3679 | error_report("Invalid cache mode"); | |
3680 | ret = -1; | |
3681 | goto out; | |
3682 | } | |
3683 | break; | |
b6495fa8 KW |
3684 | case 'w': |
3685 | flags |= BDRV_O_RDWR; | |
3686 | is_write = true; | |
3687 | break; | |
3688 | case OPTION_PATTERN: | |
3689 | { | |
3690 | char *end; | |
3691 | errno = 0; | |
3692 | pattern = strtoul(optarg, &end, 0); | |
3693 | if (errno || *end || pattern > 0xff) { | |
3694 | error_report("Invalid pattern byte specified"); | |
3695 | return 1; | |
3696 | } | |
3697 | break; | |
3698 | } | |
55d539c8 KW |
3699 | case OPTION_FLUSH_INTERVAL: |
3700 | { | |
3701 | char *end; | |
3702 | errno = 0; | |
3703 | flush_interval = strtoul(optarg, &end, 0); | |
3704 | if (errno || *end || flush_interval > INT_MAX) { | |
3705 | error_report("Invalid flush interval specified"); | |
3706 | return 1; | |
3707 | } | |
3708 | break; | |
3709 | } | |
3710 | case OPTION_NO_DRAIN: | |
3711 | drain_on_flush = false; | |
3712 | break; | |
b6133b8c KW |
3713 | case OPTION_IMAGE_OPTS: |
3714 | image_opts = true; | |
3715 | break; | |
3716 | } | |
3717 | } | |
3718 | ||
3719 | if (optind != argc - 1) { | |
3720 | error_exit("Expecting one image file name"); | |
3721 | } | |
3722 | filename = argv[argc - 1]; | |
3723 | ||
55d539c8 KW |
3724 | if (!is_write && flush_interval) { |
3725 | error_report("--flush-interval is only available in write tests"); | |
3726 | ret = -1; | |
3727 | goto out; | |
3728 | } | |
3729 | if (flush_interval && flush_interval < depth) { | |
3730 | error_report("Flush interval can't be smaller than depth"); | |
3731 | ret = -1; | |
3732 | goto out; | |
3733 | } | |
3734 | ||
b6133b8c KW |
3735 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet); |
3736 | if (!blk) { | |
3737 | ret = -1; | |
3738 | goto out; | |
3739 | } | |
3740 | ||
3741 | image_size = blk_getlength(blk); | |
3742 | if (image_size < 0) { | |
3743 | ret = image_size; | |
3744 | goto out; | |
3745 | } | |
3746 | ||
3747 | data = (BenchData) { | |
55d539c8 KW |
3748 | .blk = blk, |
3749 | .image_size = image_size, | |
3750 | .bufsize = bufsize, | |
3751 | .step = step ?: bufsize, | |
3752 | .nrreq = depth, | |
3753 | .n = count, | |
3754 | .offset = offset, | |
3755 | .write = is_write, | |
3756 | .flush_interval = flush_interval, | |
3757 | .drain_on_flush = drain_on_flush, | |
b6133b8c | 3758 | }; |
d3199a31 | 3759 | printf("Sending %d %s requests, %d bytes each, %d in parallel " |
83de9be0 | 3760 | "(starting at offset %" PRId64 ", step size %d)\n", |
d3199a31 | 3761 | data.n, data.write ? "write" : "read", data.bufsize, data.nrreq, |
83de9be0 | 3762 | data.offset, data.step); |
55d539c8 KW |
3763 | if (flush_interval) { |
3764 | printf("Sending flush every %d requests\n", flush_interval); | |
3765 | } | |
b6133b8c KW |
3766 | |
3767 | data.buf = blk_blockalign(blk, data.nrreq * data.bufsize); | |
b6495fa8 KW |
3768 | memset(data.buf, pattern, data.nrreq * data.bufsize); |
3769 | ||
b6133b8c KW |
3770 | data.qiov = g_new(QEMUIOVector, data.nrreq); |
3771 | for (i = 0; i < data.nrreq; i++) { | |
3772 | qemu_iovec_init(&data.qiov[i], 1); | |
3773 | qemu_iovec_add(&data.qiov[i], | |
3774 | data.buf + i * data.bufsize, data.bufsize); | |
3775 | } | |
3776 | ||
3777 | gettimeofday(&t1, NULL); | |
3778 | bench_cb(&data, 0); | |
3779 | ||
3780 | while (data.n > 0) { | |
3781 | main_loop_wait(false); | |
3782 | } | |
3783 | gettimeofday(&t2, NULL); | |
3784 | ||
3785 | printf("Run completed in %3.3f seconds.\n", | |
3786 | (t2.tv_sec - t1.tv_sec) | |
3787 | + ((double)(t2.tv_usec - t1.tv_usec) / 1000000)); | |
3788 | ||
3789 | out: | |
3790 | qemu_vfree(data.buf); | |
3791 | blk_unref(blk); | |
3792 | ||
3793 | if (ret) { | |
3794 | return 1; | |
3795 | } | |
3796 | return 0; | |
3797 | } | |
3798 | ||
3799 | ||
c227f099 | 3800 | static const img_cmd_t img_cmds[] = { |
153859be SB |
3801 | #define DEF(option, callback, arg_string) \ |
3802 | { option, callback }, | |
3803 | #include "qemu-img-cmds.h" | |
3804 | #undef DEF | |
3805 | #undef GEN_DOCS | |
3806 | { NULL, NULL, }, | |
3807 | }; | |
3808 | ||
ea2384d3 FB |
3809 | int main(int argc, char **argv) |
3810 | { | |
c227f099 | 3811 | const img_cmd_t *cmd; |
153859be | 3812 | const char *cmdname; |
2f78e491 | 3813 | Error *local_error = NULL; |
06a1e0c1 | 3814 | char *trace_file = NULL; |
7db1689c | 3815 | int c; |
7db1689c JC |
3816 | static const struct option long_options[] = { |
3817 | {"help", no_argument, 0, 'h'}, | |
10985131 | 3818 | {"version", no_argument, 0, 'V'}, |
06a1e0c1 | 3819 | {"trace", required_argument, NULL, 'T'}, |
7db1689c JC |
3820 | {0, 0, 0, 0} |
3821 | }; | |
ea2384d3 | 3822 | |
526eda14 MK |
3823 | #ifdef CONFIG_POSIX |
3824 | signal(SIGPIPE, SIG_IGN); | |
3825 | #endif | |
3826 | ||
53f76e58 | 3827 | error_set_progname(argv[0]); |
10f5bff6 | 3828 | qemu_init_exec_dir(argv[0]); |
53f76e58 | 3829 | |
2f78e491 | 3830 | if (qemu_init_main_loop(&local_error)) { |
565f65d2 | 3831 | error_report_err(local_error); |
2f78e491 CN |
3832 | exit(EXIT_FAILURE); |
3833 | } | |
3834 | ||
e8f2d272 | 3835 | qcrypto_init(&error_fatal); |
c2297088 | 3836 | |
064097d9 | 3837 | module_call_init(MODULE_INIT_QOM); |
ea2384d3 | 3838 | bdrv_init(); |
ac1307ab FZ |
3839 | if (argc < 2) { |
3840 | error_exit("Not enough arguments"); | |
3841 | } | |
153859be | 3842 | |
3babeb15 | 3843 | qemu_add_opts(&qemu_object_opts); |
eb769f74 | 3844 | qemu_add_opts(&qemu_source_opts); |
06a1e0c1 | 3845 | qemu_add_opts(&qemu_trace_opts); |
3babeb15 | 3846 | |
06a1e0c1 | 3847 | while ((c = getopt_long(argc, argv, "+hVT:", long_options, NULL)) != -1) { |
10985131 DL |
3848 | switch (c) { |
3849 | case 'h': | |
3850 | help(); | |
3851 | return 0; | |
3852 | case 'V': | |
3853 | printf(QEMU_IMG_VERSION); | |
3854 | return 0; | |
06a1e0c1 DL |
3855 | case 'T': |
3856 | g_free(trace_file); | |
3857 | trace_file = trace_opt_parse(optarg); | |
3858 | break; | |
153859be | 3859 | } |
ea2384d3 | 3860 | } |
153859be | 3861 | |
10985131 | 3862 | cmdname = argv[optind]; |
7db1689c | 3863 | |
10985131 DL |
3864 | /* reset getopt_long scanning */ |
3865 | argc -= optind; | |
3866 | if (argc < 1) { | |
5f6979cb JC |
3867 | return 0; |
3868 | } | |
10985131 | 3869 | argv += optind; |
cfef6a45 | 3870 | optind = 0; |
10985131 | 3871 | |
06a1e0c1 DL |
3872 | if (!trace_init_backends()) { |
3873 | exit(1); | |
3874 | } | |
3875 | trace_init_file(trace_file); | |
3876 | qemu_set_log(LOG_TRACE); | |
3877 | ||
10985131 DL |
3878 | /* find the command */ |
3879 | for (cmd = img_cmds; cmd->name != NULL; cmd++) { | |
3880 | if (!strcmp(cmdname, cmd->name)) { | |
3881 | return cmd->handler(argc, argv); | |
3882 | } | |
3883 | } | |
7db1689c | 3884 | |
153859be | 3885 | /* not found */ |
ac1307ab | 3886 | error_exit("Command not found: %s", cmdname); |
ea2384d3 | 3887 | } |