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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 | */ | |
452fcdbc | 24 | |
80c71a24 | 25 | #include "qemu/osdep.h" |
c2a3d7da EB |
26 | #include <getopt.h> |
27 | ||
a8d25326 | 28 | #include "qemu-common.h" |
67a1de0d | 29 | #include "qemu-version.h" |
da34e65c | 30 | #include "qapi/error.h" |
3b51ab4b | 31 | #include "qapi/qapi-commands-block-core.h" |
9af23989 | 32 | #include "qapi/qapi-visit-block-core.h" |
b3db211f | 33 | #include "qapi/qobject-output-visitor.h" |
7b1b5d19 | 34 | #include "qapi/qmp/qjson.h" |
452fcdbc | 35 | #include "qapi/qmp/qdict.h" |
fc81fa1e | 36 | #include "qapi/qmp/qstring.h" |
f348b6d1 | 37 | #include "qemu/cutils.h" |
3babeb15 | 38 | #include "qemu/config-file.h" |
1de7afc9 PB |
39 | #include "qemu/option.h" |
40 | #include "qemu/error-report.h" | |
06a1e0c1 | 41 | #include "qemu/log.h" |
db725815 | 42 | #include "qemu/main-loop.h" |
0b8fa32f | 43 | #include "qemu/module.h" |
97ede57a | 44 | #include "qemu/units.h" |
3babeb15 | 45 | #include "qom/object_interfaces.h" |
26f54e9a | 46 | #include "sysemu/block-backend.h" |
737e150e | 47 | #include "block/block_int.h" |
d4a3238a | 48 | #include "block/blockjob.h" |
f364ec65 | 49 | #include "block/qapi.h" |
c2297088 | 50 | #include "crypto/init.h" |
06a1e0c1 | 51 | #include "trace/control.h" |
e8445331 | 52 | |
7e563bfb | 53 | #define QEMU_IMG_VERSION "qemu-img version " QEMU_FULL_VERSION \ |
0781dd6e | 54 | "\n" QEMU_COPYRIGHT "\n" |
5f6979cb | 55 | |
c227f099 | 56 | typedef struct img_cmd_t { |
153859be SB |
57 | const char *name; |
58 | int (*handler)(int argc, char **argv); | |
c227f099 | 59 | } img_cmd_t; |
153859be | 60 | |
8599ea4c FS |
61 | enum { |
62 | OPTION_OUTPUT = 256, | |
63 | OPTION_BACKING_CHAIN = 257, | |
3babeb15 | 64 | OPTION_OBJECT = 258, |
eb769f74 | 65 | OPTION_IMAGE_OPTS = 259, |
b6495fa8 | 66 | OPTION_PATTERN = 260, |
55d539c8 KW |
67 | OPTION_FLUSH_INTERVAL = 261, |
68 | OPTION_NO_DRAIN = 262, | |
305b4c60 | 69 | OPTION_TARGET_IMAGE_OPTS = 263, |
fd03c2b8 | 70 | OPTION_SIZE = 264, |
dc5f690b | 71 | OPTION_PREALLOCATION = 265, |
4ffca890 | 72 | OPTION_SHRINK = 266, |
8eaac025 | 73 | OPTION_SALVAGE = 267, |
168468fe | 74 | OPTION_TARGET_IS_ZERO = 268, |
3b51ab4b EB |
75 | OPTION_ADD = 269, |
76 | OPTION_REMOVE = 270, | |
77 | OPTION_CLEAR = 271, | |
78 | OPTION_ENABLE = 272, | |
79 | OPTION_DISABLE = 273, | |
80 | OPTION_MERGE = 274, | |
8599ea4c FS |
81 | }; |
82 | ||
83 | typedef enum OutputFormat { | |
84 | OFORMAT_JSON, | |
85 | OFORMAT_HUMAN, | |
86 | } OutputFormat; | |
87 | ||
e6996143 | 88 | /* Default to cache=writeback as data integrity is not important for qemu-img */ |
661a0f71 | 89 | #define BDRV_DEFAULT_CACHE "writeback" |
137519ce | 90 | |
00c6d403 | 91 | static void format_print(void *opaque, const char *name) |
ea2384d3 | 92 | { |
00c6d403 | 93 | printf(" %s", name); |
ea2384d3 FB |
94 | } |
95 | ||
ac1307ab FZ |
96 | static void QEMU_NORETURN GCC_FMT_ATTR(1, 2) error_exit(const char *fmt, ...) |
97 | { | |
98 | va_list ap; | |
99 | ||
ac1307ab | 100 | va_start(ap, fmt); |
e9e1d92d | 101 | error_vreport(fmt, ap); |
ac1307ab FZ |
102 | va_end(ap); |
103 | ||
e9e1d92d | 104 | error_printf("Try 'qemu-img --help' for more information\n"); |
ac1307ab FZ |
105 | exit(EXIT_FAILURE); |
106 | } | |
107 | ||
c9192973 SH |
108 | static void QEMU_NORETURN missing_argument(const char *option) |
109 | { | |
110 | error_exit("missing argument for option '%s'", option); | |
111 | } | |
112 | ||
113 | static void QEMU_NORETURN unrecognized_option(const char *option) | |
114 | { | |
115 | error_exit("unrecognized option '%s'", option); | |
116 | } | |
117 | ||
0562adf5 | 118 | /* Please keep in synch with docs/tools/qemu-img.rst */ |
ac1307ab | 119 | static void QEMU_NORETURN help(void) |
ea2384d3 | 120 | { |
e00291c0 | 121 | const char *help_msg = |
5f6979cb | 122 | QEMU_IMG_VERSION |
10985131 | 123 | "usage: qemu-img [standard options] command [command options]\n" |
3f020d70 | 124 | "QEMU disk image utility\n" |
125 | "\n" | |
10985131 DL |
126 | " '-h', '--help' display this help and exit\n" |
127 | " '-V', '--version' output version information and exit\n" | |
06a1e0c1 DL |
128 | " '-T', '--trace' [[enable=]<pattern>][,events=<file>][,file=<file>]\n" |
129 | " specify tracing options\n" | |
10985131 | 130 | "\n" |
3f020d70 | 131 | "Command syntax:\n" |
153859be SB |
132 | #define DEF(option, callback, arg_string) \ |
133 | " " arg_string "\n" | |
134 | #include "qemu-img-cmds.h" | |
135 | #undef DEF | |
3f020d70 | 136 | "\n" |
137 | "Command parameters:\n" | |
138 | " 'filename' is a disk image filename\n" | |
3babeb15 DB |
139 | " 'objectdef' is a QEMU user creatable object definition. See the qemu(1)\n" |
140 | " manual page for a description of the object properties. The most common\n" | |
141 | " object type is a 'secret', which is used to supply passwords and/or\n" | |
142 | " encryption keys.\n" | |
3f020d70 | 143 | " 'fmt' is the disk image format. It is guessed automatically in most cases\n" |
661a0f71 | 144 | " 'cache' is the cache mode used to write the output disk image, the valid\n" |
80ccf93b LY |
145 | " options are: 'none', 'writeback' (default, except for convert), 'writethrough',\n" |
146 | " 'directsync' and 'unsafe' (default for convert)\n" | |
bb87fdf8 SH |
147 | " 'src_cache' is the cache mode used to read input disk images, the valid\n" |
148 | " options are the same as for the 'cache' option\n" | |
3f020d70 | 149 | " 'size' is the disk image size in bytes. Optional suffixes\n" |
5e00984a KW |
150 | " 'k' or 'K' (kilobyte, 1024), 'M' (megabyte, 1024k), 'G' (gigabyte, 1024M),\n" |
151 | " 'T' (terabyte, 1024G), 'P' (petabyte, 1024T) and 'E' (exabyte, 1024P) are\n" | |
152 | " supported. 'b' is ignored.\n" | |
3f020d70 | 153 | " 'output_filename' is the destination disk image filename\n" |
154 | " 'output_fmt' is the destination format\n" | |
155 | " 'options' is a comma separated list of format specific options in a\n" | |
156 | " name=value format. Use -o ? for an overview of the options supported by the\n" | |
157 | " used format\n" | |
ef80654d WX |
158 | " 'snapshot_param' is param used for internal snapshot, format\n" |
159 | " is 'snapshot.id=[ID],snapshot.name=[NAME]', or\n" | |
160 | " '[ID_OR_NAME]'\n" | |
3f020d70 | 161 | " '-c' indicates that target image must be compressed (qcow format only)\n" |
6e6e55f5 JS |
162 | " '-u' allows unsafe backing chains. For rebasing, it is assumed that old and\n" |
163 | " new backing file match exactly. The image doesn't need a working\n" | |
164 | " backing file before rebasing in this case (useful for renaming the\n" | |
165 | " backing file). For image creation, allow creating without attempting\n" | |
166 | " to open the backing file.\n" | |
3f020d70 | 167 | " '-h' with or without a command shows this help and lists the supported formats\n" |
6b837bc4 | 168 | " '-p' show progress of command (only certain commands)\n" |
f382d43a | 169 | " '-q' use Quiet mode - do not print any output (except errors)\n" |
11b6699a PL |
170 | " '-S' indicates the consecutive number of bytes (defaults to 4k) that must\n" |
171 | " contain only zeros for qemu-img to create a sparse image during\n" | |
172 | " conversion. If the number of bytes is 0, the source will not be scanned for\n" | |
173 | " unallocated or zero sectors, and the destination image will always be\n" | |
174 | " fully allocated\n" | |
c054b3fd | 175 | " '--output' takes the format in which the output must be done (human or json)\n" |
b2e10493 AD |
176 | " '-n' skips the target volume creation (useful if the volume is created\n" |
177 | " prior to running qemu-img)\n" | |
3f020d70 | 178 | "\n" |
3b51ab4b EB |
179 | "Parameters to bitmap subcommand:\n" |
180 | " 'bitmap' is the name of the bitmap to manipulate, through one or more\n" | |
181 | " actions from '--add', '--remove', '--clear', '--enable', '--disable',\n" | |
182 | " or '--merge source'\n" | |
183 | " '-g granularity' sets the granularity for '--add' actions\n" | |
184 | " '-b source' and '-F src_fmt' tell '--merge' actions to find the source\n" | |
185 | " bitmaps from an alternative file\n" | |
186 | "\n" | |
4534ff54 KW |
187 | "Parameters to check subcommand:\n" |
188 | " '-r' tries to repair any inconsistencies that are found during the check.\n" | |
189 | " '-r leaks' repairs only cluster leaks, whereas '-r all' fixes all\n" | |
190 | " kinds of errors, with a higher risk of choosing the wrong fix or\n" | |
0546b8c2 | 191 | " hiding corruption that has already occurred.\n" |
4534ff54 | 192 | "\n" |
2d9187bc PL |
193 | "Parameters to convert subcommand:\n" |
194 | " '-m' specifies how many coroutines work in parallel during the convert\n" | |
195 | " process (defaults to 8)\n" | |
196 | " '-W' allow to write to the target out of order rather than sequential\n" | |
197 | "\n" | |
3f020d70 | 198 | "Parameters to snapshot subcommand:\n" |
199 | " 'snapshot' is the name of the snapshot to create, apply or delete\n" | |
200 | " '-a' applies a snapshot (revert disk to saved state)\n" | |
201 | " '-c' creates a snapshot\n" | |
202 | " '-d' deletes a snapshot\n" | |
d14ed18c MR |
203 | " '-l' lists all snapshots in the given image\n" |
204 | "\n" | |
205 | "Parameters to compare subcommand:\n" | |
206 | " '-f' first image format\n" | |
207 | " '-F' second image format\n" | |
86ce1f6e RS |
208 | " '-s' run in Strict mode - fail on different image size or sector allocation\n" |
209 | "\n" | |
210 | "Parameters to dd subcommand:\n" | |
211 | " 'bs=BYTES' read and write up to BYTES bytes at a time " | |
212 | "(default: 512)\n" | |
213 | " 'count=N' copy only N input blocks\n" | |
214 | " 'if=FILE' read from FILE\n" | |
f7c15533 RS |
215 | " 'of=FILE' write to FILE\n" |
216 | " 'skip=N' skip N bs-sized blocks at the start of input\n"; | |
e00291c0 PB |
217 | |
218 | printf("%s\nSupported formats:", help_msg); | |
9ac404c5 | 219 | bdrv_iterate_format(format_print, NULL, false); |
f5048cb7 | 220 | printf("\n\n" QEMU_HELP_BOTTOM "\n"); |
ac1307ab | 221 | exit(EXIT_SUCCESS); |
ea2384d3 FB |
222 | } |
223 | ||
3babeb15 DB |
224 | static QemuOptsList qemu_object_opts = { |
225 | .name = "object", | |
226 | .implied_opt_name = "qom-type", | |
227 | .head = QTAILQ_HEAD_INITIALIZER(qemu_object_opts.head), | |
228 | .desc = { | |
229 | { } | |
230 | }, | |
231 | }; | |
232 | ||
c6e5cdfd KW |
233 | static bool qemu_img_object_print_help(const char *type, QemuOpts *opts) |
234 | { | |
235 | if (user_creatable_print_help(type, opts)) { | |
236 | exit(0); | |
237 | } | |
238 | return true; | |
80c710cb MA |
239 | } |
240 | ||
241 | /* | |
242 | * Is @optarg safe for accumulate_options()? | |
243 | * It is when multiple of them can be joined together separated by ','. | |
244 | * To make that work, @optarg must not start with ',' (or else a | |
245 | * separating ',' preceding it gets escaped), and it must not end with | |
246 | * an odd number of ',' (or else a separating ',' following it gets | |
f62514b3 MA |
247 | * escaped), or be empty (or else a separating ',' preceding it can |
248 | * escape a separating ',' following it). | |
249 | * | |
80c710cb MA |
250 | */ |
251 | static bool is_valid_option_list(const char *optarg) | |
252 | { | |
253 | size_t len = strlen(optarg); | |
254 | size_t i; | |
255 | ||
f62514b3 | 256 | if (!optarg[0] || optarg[0] == ',') { |
80c710cb MA |
257 | return false; |
258 | } | |
259 | ||
260 | for (i = len; i > 0 && optarg[i - 1] == ','; i--) { | |
261 | } | |
262 | if ((len - i) % 2) { | |
263 | return false; | |
264 | } | |
265 | ||
266 | return true; | |
c6e5cdfd KW |
267 | } |
268 | ||
6d2b5cba MA |
269 | static int accumulate_options(char **options, char *optarg) |
270 | { | |
271 | char *new_options; | |
272 | ||
273 | if (!is_valid_option_list(optarg)) { | |
274 | error_report("Invalid option list: %s", optarg); | |
275 | return -1; | |
276 | } | |
277 | ||
278 | if (!*options) { | |
279 | *options = g_strdup(optarg); | |
280 | } else { | |
281 | new_options = g_strdup_printf("%s,%s", *options, optarg); | |
282 | g_free(*options); | |
283 | *options = new_options; | |
284 | } | |
285 | return 0; | |
286 | } | |
287 | ||
eb769f74 DB |
288 | static QemuOptsList qemu_source_opts = { |
289 | .name = "source", | |
290 | .implied_opt_name = "file", | |
291 | .head = QTAILQ_HEAD_INITIALIZER(qemu_source_opts.head), | |
292 | .desc = { | |
293 | { } | |
294 | }, | |
295 | }; | |
296 | ||
7c30f657 | 297 | static int GCC_FMT_ATTR(2, 3) qprintf(bool quiet, const char *fmt, ...) |
f382d43a MR |
298 | { |
299 | int ret = 0; | |
300 | if (!quiet) { | |
301 | va_list args; | |
302 | va_start(args, fmt); | |
303 | ret = vprintf(fmt, args); | |
304 | va_end(args); | |
305 | } | |
306 | return ret; | |
307 | } | |
308 | ||
ea2384d3 | 309 | |
4ac8aacd JS |
310 | static int print_block_option_help(const char *filename, const char *fmt) |
311 | { | |
312 | BlockDriver *drv, *proto_drv; | |
83d0521a | 313 | QemuOptsList *create_opts = NULL; |
b65a5e12 | 314 | Error *local_err = NULL; |
4ac8aacd JS |
315 | |
316 | /* Find driver and parse its options */ | |
317 | drv = bdrv_find_format(fmt); | |
318 | if (!drv) { | |
15654a6d | 319 | error_report("Unknown file format '%s'", fmt); |
4ac8aacd JS |
320 | return 1; |
321 | } | |
322 | ||
d402b6a2 HR |
323 | if (!drv->create_opts) { |
324 | error_report("Format driver '%s' does not support image creation", fmt); | |
325 | return 1; | |
326 | } | |
327 | ||
c282e1fd | 328 | create_opts = qemu_opts_append(create_opts, drv->create_opts); |
a283cb6e | 329 | if (filename) { |
b65a5e12 | 330 | proto_drv = bdrv_find_protocol(filename, true, &local_err); |
a283cb6e | 331 | if (!proto_drv) { |
2867ce4a | 332 | error_report_err(local_err); |
83d0521a | 333 | qemu_opts_free(create_opts); |
a283cb6e KW |
334 | return 1; |
335 | } | |
d402b6a2 | 336 | if (!proto_drv->create_opts) { |
f0998879 | 337 | error_report("Protocol driver '%s' does not support image creation", |
d402b6a2 | 338 | proto_drv->format_name); |
3ecd5a4f | 339 | qemu_opts_free(create_opts); |
d402b6a2 HR |
340 | return 1; |
341 | } | |
c282e1fd | 342 | create_opts = qemu_opts_append(create_opts, proto_drv->create_opts); |
a283cb6e KW |
343 | } |
344 | ||
f4619af0 HR |
345 | if (filename) { |
346 | printf("Supported options:\n"); | |
347 | } else { | |
348 | printf("Supported %s options:\n", fmt); | |
349 | } | |
63898712 | 350 | qemu_opts_print_help(create_opts, false); |
83d0521a | 351 | qemu_opts_free(create_opts); |
f4619af0 HR |
352 | |
353 | if (!filename) { | |
354 | printf("\n" | |
355 | "The protocol level may support further options.\n" | |
356 | "Specify the target filename to include those options.\n"); | |
357 | } | |
358 | ||
4ac8aacd JS |
359 | return 0; |
360 | } | |
361 | ||
eb769f74 | 362 | |
efaa7c4e | 363 | static BlockBackend *img_open_opts(const char *optstr, |
ce099547 | 364 | QemuOpts *opts, int flags, bool writethrough, |
335e9937 | 365 | bool quiet, bool force_share) |
eb769f74 DB |
366 | { |
367 | QDict *options; | |
368 | Error *local_err = NULL; | |
369 | BlockBackend *blk; | |
370 | options = qemu_opts_to_qdict(opts, NULL); | |
335e9937 FZ |
371 | if (force_share) { |
372 | if (qdict_haskey(options, BDRV_OPT_FORCE_SHARE) | |
4615f878 | 373 | && strcmp(qdict_get_str(options, BDRV_OPT_FORCE_SHARE), "on")) { |
335e9937 | 374 | error_report("--force-share/-U conflicts with image options"); |
cb3e7f08 | 375 | qobject_unref(options); |
335e9937 FZ |
376 | return NULL; |
377 | } | |
4615f878 | 378 | qdict_put_str(options, BDRV_OPT_FORCE_SHARE, "on"); |
335e9937 | 379 | } |
efaa7c4e | 380 | blk = blk_new_open(NULL, NULL, options, flags, &local_err); |
eb769f74 | 381 | if (!blk) { |
143605a2 | 382 | error_reportf_err(local_err, "Could not open '%s': ", optstr); |
eb769f74 DB |
383 | return NULL; |
384 | } | |
ce099547 | 385 | blk_set_enable_write_cache(blk, !writethrough); |
eb769f74 | 386 | |
eb769f74 DB |
387 | return blk; |
388 | } | |
389 | ||
efaa7c4e | 390 | static BlockBackend *img_open_file(const char *filename, |
29cf9336 | 391 | QDict *options, |
eb769f74 | 392 | const char *fmt, int flags, |
335e9937 FZ |
393 | bool writethrough, bool quiet, |
394 | bool force_share) | |
eb769f74 DB |
395 | { |
396 | BlockBackend *blk; | |
34b5d2c6 | 397 | Error *local_err = NULL; |
ad717139 | 398 | |
29cf9336 DB |
399 | if (!options) { |
400 | options = qdict_new(); | |
401 | } | |
75c23805 | 402 | if (fmt) { |
46f5ac20 | 403 | qdict_put_str(options, "driver", fmt); |
75c23805 | 404 | } |
b9eaf9ec | 405 | |
335e9937 | 406 | if (force_share) { |
579cf1d1 | 407 | qdict_put_bool(options, BDRV_OPT_FORCE_SHARE, true); |
335e9937 | 408 | } |
efaa7c4e | 409 | blk = blk_new_open(filename, NULL, options, flags, &local_err); |
5bd31326 | 410 | if (!blk) { |
c29b77f9 | 411 | error_reportf_err(local_err, "Could not open '%s': ", filename); |
eb769f74 | 412 | return NULL; |
75c23805 | 413 | } |
ce099547 | 414 | blk_set_enable_write_cache(blk, !writethrough); |
b9eaf9ec | 415 | |
eb769f74 DB |
416 | return blk; |
417 | } | |
418 | ||
419 | ||
29cf9336 DB |
420 | static int img_add_key_secrets(void *opaque, |
421 | const char *name, const char *value, | |
422 | Error **errp) | |
423 | { | |
424 | QDict *options = opaque; | |
425 | ||
426 | if (g_str_has_suffix(name, "key-secret")) { | |
187f47e9 | 427 | qdict_put_str(options, name, value); |
29cf9336 DB |
428 | } |
429 | ||
430 | return 0; | |
431 | } | |
432 | ||
29cf9336 | 433 | |
efaa7c4e | 434 | static BlockBackend *img_open(bool image_opts, |
eb769f74 | 435 | const char *filename, |
ce099547 | 436 | const char *fmt, int flags, bool writethrough, |
335e9937 | 437 | bool quiet, bool force_share) |
eb769f74 DB |
438 | { |
439 | BlockBackend *blk; | |
440 | if (image_opts) { | |
441 | QemuOpts *opts; | |
442 | if (fmt) { | |
443 | error_report("--image-opts and --format are mutually exclusive"); | |
444 | return NULL; | |
445 | } | |
446 | opts = qemu_opts_parse_noisily(qemu_find_opts("source"), | |
447 | filename, true); | |
448 | if (!opts) { | |
449 | return NULL; | |
450 | } | |
335e9937 FZ |
451 | blk = img_open_opts(filename, opts, flags, writethrough, quiet, |
452 | force_share); | |
eb769f74 | 453 | } else { |
29cf9336 | 454 | blk = img_open_file(filename, NULL, fmt, flags, writethrough, quiet, |
335e9937 | 455 | force_share); |
75c23805 | 456 | } |
7e7d56d9 | 457 | return blk; |
75c23805 FB |
458 | } |
459 | ||
eb769f74 | 460 | |
83d0521a | 461 | static int add_old_style_options(const char *fmt, QemuOpts *opts, |
eec77d9e JS |
462 | const char *base_filename, |
463 | const char *base_fmt) | |
efa84d43 | 464 | { |
6750e795 MA |
465 | Error *err = NULL; |
466 | ||
efa84d43 | 467 | if (base_filename) { |
f43e47db | 468 | qemu_opt_set(opts, BLOCK_OPT_BACKING_FILE, base_filename, &err); |
6750e795 | 469 | if (err) { |
15654a6d JS |
470 | error_report("Backing file not supported for file format '%s'", |
471 | fmt); | |
6750e795 | 472 | error_free(err); |
c2abccec | 473 | return -1; |
efa84d43 KW |
474 | } |
475 | } | |
476 | if (base_fmt) { | |
f43e47db | 477 | qemu_opt_set(opts, BLOCK_OPT_BACKING_FMT, base_fmt, &err); |
6750e795 | 478 | if (err) { |
15654a6d JS |
479 | error_report("Backing file format not supported for file " |
480 | "format '%s'", fmt); | |
6750e795 | 481 | error_free(err); |
c2abccec | 482 | return -1; |
efa84d43 KW |
483 | } |
484 | } | |
c2abccec | 485 | return 0; |
efa84d43 KW |
486 | } |
487 | ||
43d589b0 EM |
488 | static int64_t cvtnum_full(const char *name, const char *value, int64_t min, |
489 | int64_t max) | |
606caa0a | 490 | { |
f17fd4fd | 491 | int err; |
43d589b0 EM |
492 | uint64_t res; |
493 | ||
494 | err = qemu_strtosz(value, NULL, &res); | |
495 | if (err < 0 && err != -ERANGE) { | |
496 | error_report("Invalid %s specified. You may use " | |
497 | "k, M, G, T, P or E suffixes for", name); | |
498 | error_report("kilobytes, megabytes, gigabytes, terabytes, " | |
499 | "petabytes and exabytes."); | |
f17fd4fd MA |
500 | return err; |
501 | } | |
43d589b0 EM |
502 | if (err == -ERANGE || res > max || res < min) { |
503 | error_report("Invalid %s specified. Must be between %" PRId64 | |
504 | " and %" PRId64 ".", name, min, max); | |
f46bfdbf MA |
505 | return -ERANGE; |
506 | } | |
43d589b0 EM |
507 | return res; |
508 | } | |
509 | ||
510 | static int64_t cvtnum(const char *name, const char *value) | |
511 | { | |
512 | return cvtnum_full(name, value, 0, INT64_MAX); | |
606caa0a MA |
513 | } |
514 | ||
ea2384d3 FB |
515 | static int img_create(int argc, char **argv) |
516 | { | |
a9300911 | 517 | int c; |
1da7cfbd | 518 | uint64_t img_size = -1; |
ea2384d3 | 519 | const char *fmt = "raw"; |
9230eaf6 | 520 | const char *base_fmt = NULL; |
ea2384d3 FB |
521 | const char *filename; |
522 | const char *base_filename = NULL; | |
9ea2ea71 | 523 | char *options = NULL; |
9b37525a | 524 | Error *local_err = NULL; |
f382d43a | 525 | bool quiet = false; |
6e6e55f5 | 526 | int flags = 0; |
3b46e624 | 527 | |
ea2384d3 | 528 | for(;;) { |
3babeb15 DB |
529 | static const struct option long_options[] = { |
530 | {"help", no_argument, 0, 'h'}, | |
531 | {"object", required_argument, 0, OPTION_OBJECT}, | |
532 | {0, 0, 0, 0} | |
533 | }; | |
6e6e55f5 | 534 | c = getopt_long(argc, argv, ":F:b:f:ho:qu", |
3babeb15 | 535 | long_options, NULL); |
b8fb60da | 536 | if (c == -1) { |
ea2384d3 | 537 | break; |
b8fb60da | 538 | } |
ea2384d3 | 539 | switch(c) { |
c9192973 SH |
540 | case ':': |
541 | missing_argument(argv[optind - 1]); | |
542 | break; | |
ef87394c | 543 | case '?': |
c9192973 SH |
544 | unrecognized_option(argv[optind - 1]); |
545 | break; | |
ea2384d3 FB |
546 | case 'h': |
547 | help(); | |
548 | break; | |
9230eaf6 AL |
549 | case 'F': |
550 | base_fmt = optarg; | |
551 | break; | |
ea2384d3 FB |
552 | case 'b': |
553 | base_filename = optarg; | |
554 | break; | |
555 | case 'f': | |
556 | fmt = optarg; | |
557 | break; | |
9ea2ea71 | 558 | case 'o': |
6d2b5cba | 559 | if (accumulate_options(&options, optarg) < 0) { |
77386bf6 KW |
560 | goto fail; |
561 | } | |
9ea2ea71 | 562 | break; |
f382d43a MR |
563 | case 'q': |
564 | quiet = true; | |
565 | break; | |
6e6e55f5 JS |
566 | case 'u': |
567 | flags |= BDRV_O_NO_BACKING; | |
568 | break; | |
3babeb15 DB |
569 | case OPTION_OBJECT: { |
570 | QemuOpts *opts; | |
571 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
572 | optarg, true); | |
573 | if (!opts) { | |
574 | goto fail; | |
575 | } | |
576 | } break; | |
ea2384d3 FB |
577 | } |
578 | } | |
9230eaf6 | 579 | |
b50cbabc | 580 | /* Get the filename */ |
a283cb6e KW |
581 | filename = (optind < argc) ? argv[optind] : NULL; |
582 | if (options && has_help_option(options)) { | |
583 | g_free(options); | |
584 | return print_block_option_help(filename, fmt); | |
585 | } | |
586 | ||
b8fb60da | 587 | if (optind >= argc) { |
ac1307ab | 588 | error_exit("Expecting image file name"); |
b8fb60da | 589 | } |
a283cb6e | 590 | optind++; |
b50cbabc | 591 | |
3babeb15 DB |
592 | if (qemu_opts_foreach(&qemu_object_opts, |
593 | user_creatable_add_opts_foreach, | |
c6e5cdfd | 594 | qemu_img_object_print_help, &error_fatal)) { |
3babeb15 DB |
595 | goto fail; |
596 | } | |
597 | ||
1da7cfbd JS |
598 | /* Get image size, if specified */ |
599 | if (optind < argc) { | |
70b4f4bb | 600 | int64_t sval; |
606caa0a | 601 | |
43d589b0 | 602 | sval = cvtnum("image size", argv[optind++]); |
606caa0a | 603 | if (sval < 0) { |
77386bf6 | 604 | goto fail; |
1da7cfbd JS |
605 | } |
606 | img_size = (uint64_t)sval; | |
607 | } | |
fc11eb26 | 608 | if (optind != argc) { |
ac1307ab | 609 | error_exit("Unexpected argument: %s", argv[optind]); |
fc11eb26 | 610 | } |
1da7cfbd | 611 | |
9b37525a | 612 | bdrv_img_create(filename, fmt, base_filename, base_fmt, |
6e6e55f5 | 613 | options, img_size, flags, quiet, &local_err); |
84d18f06 | 614 | if (local_err) { |
c29b77f9 | 615 | error_reportf_err(local_err, "%s: ", filename); |
77386bf6 | 616 | goto fail; |
c2abccec | 617 | } |
a9300911 | 618 | |
77386bf6 | 619 | g_free(options); |
ea2384d3 | 620 | return 0; |
77386bf6 KW |
621 | |
622 | fail: | |
623 | g_free(options); | |
624 | return 1; | |
ea2384d3 FB |
625 | } |
626 | ||
f382d43a | 627 | static void dump_json_image_check(ImageCheck *check, bool quiet) |
8599ea4c | 628 | { |
8599ea4c | 629 | QString *str; |
8599ea4c | 630 | QObject *obj; |
7d5e199a | 631 | Visitor *v = qobject_output_visitor_new(&obj); |
3b098d56 EB |
632 | |
633 | visit_type_ImageCheck(v, NULL, &check, &error_abort); | |
634 | visit_complete(v, &obj); | |
8599ea4c FS |
635 | str = qobject_to_json_pretty(obj); |
636 | assert(str != NULL); | |
f382d43a | 637 | qprintf(quiet, "%s\n", qstring_get_str(str)); |
cb3e7f08 | 638 | qobject_unref(obj); |
3b098d56 | 639 | visit_free(v); |
cb3e7f08 | 640 | qobject_unref(str); |
8599ea4c FS |
641 | } |
642 | ||
f382d43a | 643 | static void dump_human_image_check(ImageCheck *check, bool quiet) |
8599ea4c FS |
644 | { |
645 | if (!(check->corruptions || check->leaks || check->check_errors)) { | |
f382d43a | 646 | qprintf(quiet, "No errors were found on the image.\n"); |
8599ea4c FS |
647 | } else { |
648 | if (check->corruptions) { | |
f382d43a MR |
649 | qprintf(quiet, "\n%" PRId64 " errors were found on the image.\n" |
650 | "Data may be corrupted, or further writes to the image " | |
651 | "may corrupt it.\n", | |
652 | check->corruptions); | |
8599ea4c FS |
653 | } |
654 | ||
655 | if (check->leaks) { | |
f382d43a MR |
656 | qprintf(quiet, |
657 | "\n%" PRId64 " leaked clusters were found on the image.\n" | |
658 | "This means waste of disk space, but no harm to data.\n", | |
659 | check->leaks); | |
8599ea4c FS |
660 | } |
661 | ||
662 | if (check->check_errors) { | |
f382d43a MR |
663 | qprintf(quiet, |
664 | "\n%" PRId64 | |
665 | " internal errors have occurred during the check.\n", | |
666 | check->check_errors); | |
8599ea4c FS |
667 | } |
668 | } | |
669 | ||
670 | if (check->total_clusters != 0 && check->allocated_clusters != 0) { | |
f382d43a MR |
671 | qprintf(quiet, "%" PRId64 "/%" PRId64 " = %0.2f%% allocated, " |
672 | "%0.2f%% fragmented, %0.2f%% compressed clusters\n", | |
673 | check->allocated_clusters, check->total_clusters, | |
674 | check->allocated_clusters * 100.0 / check->total_clusters, | |
675 | check->fragmented_clusters * 100.0 / check->allocated_clusters, | |
676 | check->compressed_clusters * 100.0 / | |
677 | check->allocated_clusters); | |
8599ea4c FS |
678 | } |
679 | ||
680 | if (check->image_end_offset) { | |
f382d43a MR |
681 | qprintf(quiet, |
682 | "Image end offset: %" PRId64 "\n", check->image_end_offset); | |
8599ea4c FS |
683 | } |
684 | } | |
685 | ||
686 | static int collect_image_check(BlockDriverState *bs, | |
687 | ImageCheck *check, | |
688 | const char *filename, | |
689 | const char *fmt, | |
690 | int fix) | |
691 | { | |
692 | int ret; | |
693 | BdrvCheckResult result; | |
694 | ||
695 | ret = bdrv_check(bs, &result, fix); | |
696 | if (ret < 0) { | |
697 | return ret; | |
698 | } | |
699 | ||
700 | check->filename = g_strdup(filename); | |
701 | check->format = g_strdup(bdrv_get_format_name(bs)); | |
702 | check->check_errors = result.check_errors; | |
703 | check->corruptions = result.corruptions; | |
704 | check->has_corruptions = result.corruptions != 0; | |
705 | check->leaks = result.leaks; | |
706 | check->has_leaks = result.leaks != 0; | |
707 | check->corruptions_fixed = result.corruptions_fixed; | |
1656324e | 708 | check->has_corruptions_fixed = result.corruptions_fixed != 0; |
8599ea4c | 709 | check->leaks_fixed = result.leaks_fixed; |
1656324e | 710 | check->has_leaks_fixed = result.leaks_fixed != 0; |
8599ea4c FS |
711 | check->image_end_offset = result.image_end_offset; |
712 | check->has_image_end_offset = result.image_end_offset != 0; | |
713 | check->total_clusters = result.bfi.total_clusters; | |
714 | check->has_total_clusters = result.bfi.total_clusters != 0; | |
715 | check->allocated_clusters = result.bfi.allocated_clusters; | |
716 | check->has_allocated_clusters = result.bfi.allocated_clusters != 0; | |
717 | check->fragmented_clusters = result.bfi.fragmented_clusters; | |
718 | check->has_fragmented_clusters = result.bfi.fragmented_clusters != 0; | |
e6439d78 SH |
719 | check->compressed_clusters = result.bfi.compressed_clusters; |
720 | check->has_compressed_clusters = result.bfi.compressed_clusters != 0; | |
8599ea4c FS |
721 | |
722 | return 0; | |
723 | } | |
724 | ||
e076f338 KW |
725 | /* |
726 | * Checks an image for consistency. Exit codes: | |
727 | * | |
d6635c4d HR |
728 | * 0 - Check completed, image is good |
729 | * 1 - Check not completed because of internal errors | |
730 | * 2 - Check completed, image is corrupted | |
731 | * 3 - Check completed, image has leaked clusters, but is good otherwise | |
732 | * 63 - Checks are not supported by the image format | |
e076f338 | 733 | */ |
1585969c AL |
734 | static int img_check(int argc, char **argv) |
735 | { | |
736 | int c, ret; | |
8599ea4c | 737 | OutputFormat output_format = OFORMAT_HUMAN; |
40055951 | 738 | const char *filename, *fmt, *output, *cache; |
26f54e9a | 739 | BlockBackend *blk; |
1585969c | 740 | BlockDriverState *bs; |
4534ff54 | 741 | int fix = 0; |
ce099547 KW |
742 | int flags = BDRV_O_CHECK; |
743 | bool writethrough; | |
7e7d56d9 | 744 | ImageCheck *check; |
f382d43a | 745 | bool quiet = false; |
eb769f74 | 746 | bool image_opts = false; |
335e9937 | 747 | bool force_share = false; |
1585969c AL |
748 | |
749 | fmt = NULL; | |
8599ea4c | 750 | output = NULL; |
40055951 | 751 | cache = BDRV_DEFAULT_CACHE; |
ce099547 | 752 | |
1585969c | 753 | for(;;) { |
8599ea4c FS |
754 | int option_index = 0; |
755 | static const struct option long_options[] = { | |
756 | {"help", no_argument, 0, 'h'}, | |
757 | {"format", required_argument, 0, 'f'}, | |
4fd6a984 | 758 | {"repair", required_argument, 0, 'r'}, |
8599ea4c | 759 | {"output", required_argument, 0, OPTION_OUTPUT}, |
3babeb15 | 760 | {"object", required_argument, 0, OPTION_OBJECT}, |
eb769f74 | 761 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
335e9937 | 762 | {"force-share", no_argument, 0, 'U'}, |
8599ea4c FS |
763 | {0, 0, 0, 0} |
764 | }; | |
335e9937 | 765 | c = getopt_long(argc, argv, ":hf:r:T:qU", |
8599ea4c | 766 | long_options, &option_index); |
b8fb60da | 767 | if (c == -1) { |
1585969c | 768 | break; |
b8fb60da | 769 | } |
1585969c | 770 | switch(c) { |
c9192973 SH |
771 | case ':': |
772 | missing_argument(argv[optind - 1]); | |
773 | break; | |
ef87394c | 774 | case '?': |
c9192973 SH |
775 | unrecognized_option(argv[optind - 1]); |
776 | break; | |
1585969c AL |
777 | case 'h': |
778 | help(); | |
779 | break; | |
780 | case 'f': | |
781 | fmt = optarg; | |
782 | break; | |
4534ff54 KW |
783 | case 'r': |
784 | flags |= BDRV_O_RDWR; | |
785 | ||
786 | if (!strcmp(optarg, "leaks")) { | |
787 | fix = BDRV_FIX_LEAKS; | |
788 | } else if (!strcmp(optarg, "all")) { | |
789 | fix = BDRV_FIX_LEAKS | BDRV_FIX_ERRORS; | |
790 | } else { | |
ac1307ab FZ |
791 | error_exit("Unknown option value for -r " |
792 | "(expecting 'leaks' or 'all'): %s", optarg); | |
4534ff54 KW |
793 | } |
794 | break; | |
8599ea4c FS |
795 | case OPTION_OUTPUT: |
796 | output = optarg; | |
797 | break; | |
40055951 HR |
798 | case 'T': |
799 | cache = optarg; | |
800 | break; | |
f382d43a MR |
801 | case 'q': |
802 | quiet = true; | |
803 | break; | |
335e9937 FZ |
804 | case 'U': |
805 | force_share = true; | |
806 | break; | |
3babeb15 DB |
807 | case OPTION_OBJECT: { |
808 | QemuOpts *opts; | |
809 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
810 | optarg, true); | |
811 | if (!opts) { | |
812 | return 1; | |
813 | } | |
814 | } break; | |
eb769f74 DB |
815 | case OPTION_IMAGE_OPTS: |
816 | image_opts = true; | |
817 | break; | |
1585969c AL |
818 | } |
819 | } | |
fc11eb26 | 820 | if (optind != argc - 1) { |
ac1307ab | 821 | error_exit("Expecting one image file name"); |
b8fb60da | 822 | } |
1585969c AL |
823 | filename = argv[optind++]; |
824 | ||
8599ea4c FS |
825 | if (output && !strcmp(output, "json")) { |
826 | output_format = OFORMAT_JSON; | |
827 | } else if (output && !strcmp(output, "human")) { | |
828 | output_format = OFORMAT_HUMAN; | |
829 | } else if (output) { | |
830 | error_report("--output must be used with human or json as argument."); | |
831 | return 1; | |
832 | } | |
833 | ||
3babeb15 DB |
834 | if (qemu_opts_foreach(&qemu_object_opts, |
835 | user_creatable_add_opts_foreach, | |
c6e5cdfd | 836 | qemu_img_object_print_help, &error_fatal)) { |
3babeb15 DB |
837 | return 1; |
838 | } | |
839 | ||
ce099547 | 840 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); |
40055951 HR |
841 | if (ret < 0) { |
842 | error_report("Invalid source cache option: %s", cache); | |
843 | return 1; | |
844 | } | |
845 | ||
335e9937 FZ |
846 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet, |
847 | force_share); | |
7e7d56d9 MA |
848 | if (!blk) { |
849 | return 1; | |
c2abccec | 850 | } |
7e7d56d9 | 851 | bs = blk_bs(blk); |
8599ea4c FS |
852 | |
853 | check = g_new0(ImageCheck, 1); | |
854 | ret = collect_image_check(bs, check, filename, fmt, fix); | |
e076f338 KW |
855 | |
856 | if (ret == -ENOTSUP) { | |
55d492d7 | 857 | error_report("This image format does not support checks"); |
fefddf95 | 858 | ret = 63; |
8599ea4c | 859 | goto fail; |
e076f338 KW |
860 | } |
861 | ||
8599ea4c FS |
862 | if (check->corruptions_fixed || check->leaks_fixed) { |
863 | int corruptions_fixed, leaks_fixed; | |
1656324e | 864 | bool has_leaks_fixed, has_corruptions_fixed; |
ccf34716 | 865 | |
8599ea4c | 866 | leaks_fixed = check->leaks_fixed; |
1656324e | 867 | has_leaks_fixed = check->has_leaks_fixed; |
8599ea4c | 868 | corruptions_fixed = check->corruptions_fixed; |
1656324e | 869 | has_corruptions_fixed = check->has_corruptions_fixed; |
e076f338 | 870 | |
8599ea4c | 871 | if (output_format == OFORMAT_HUMAN) { |
f382d43a MR |
872 | qprintf(quiet, |
873 | "The following inconsistencies were found and repaired:\n\n" | |
874 | " %" PRId64 " leaked clusters\n" | |
875 | " %" PRId64 " corruptions\n\n" | |
876 | "Double checking the fixed image now...\n", | |
877 | check->leaks_fixed, | |
878 | check->corruptions_fixed); | |
e076f338 KW |
879 | } |
880 | ||
fc124ea1 PN |
881 | qapi_free_ImageCheck(check); |
882 | check = g_new0(ImageCheck, 1); | |
8599ea4c | 883 | ret = collect_image_check(bs, check, filename, fmt, 0); |
1585969c | 884 | |
8599ea4c | 885 | check->leaks_fixed = leaks_fixed; |
1656324e | 886 | check->has_leaks_fixed = has_leaks_fixed; |
8599ea4c | 887 | check->corruptions_fixed = corruptions_fixed; |
1656324e | 888 | check->has_corruptions_fixed = has_corruptions_fixed; |
f8111c24 DXW |
889 | } |
890 | ||
832390a5 HR |
891 | if (!ret) { |
892 | switch (output_format) { | |
893 | case OFORMAT_HUMAN: | |
894 | dump_human_image_check(check, quiet); | |
895 | break; | |
896 | case OFORMAT_JSON: | |
897 | dump_json_image_check(check, quiet); | |
898 | break; | |
899 | } | |
c6bb9ad1 FS |
900 | } |
901 | ||
8599ea4c | 902 | if (ret || check->check_errors) { |
832390a5 HR |
903 | if (ret) { |
904 | error_report("Check failed: %s", strerror(-ret)); | |
905 | } else { | |
906 | error_report("Check failed"); | |
907 | } | |
8599ea4c FS |
908 | ret = 1; |
909 | goto fail; | |
c2abccec | 910 | } |
e076f338 | 911 | |
8599ea4c FS |
912 | if (check->corruptions) { |
913 | ret = 2; | |
914 | } else if (check->leaks) { | |
915 | ret = 3; | |
e076f338 | 916 | } else { |
8599ea4c | 917 | ret = 0; |
e076f338 | 918 | } |
8599ea4c FS |
919 | |
920 | fail: | |
921 | qapi_free_ImageCheck(check); | |
26f54e9a | 922 | blk_unref(blk); |
8599ea4c | 923 | return ret; |
1585969c AL |
924 | } |
925 | ||
d4a3238a HR |
926 | typedef struct CommonBlockJobCBInfo { |
927 | BlockDriverState *bs; | |
928 | Error **errp; | |
929 | } CommonBlockJobCBInfo; | |
930 | ||
931 | static void common_block_job_cb(void *opaque, int ret) | |
932 | { | |
933 | CommonBlockJobCBInfo *cbi = opaque; | |
934 | ||
935 | if (ret < 0) { | |
936 | error_setg_errno(cbi->errp, -ret, "Block job failed"); | |
937 | } | |
d4a3238a HR |
938 | } |
939 | ||
940 | static void run_block_job(BlockJob *job, Error **errp) | |
941 | { | |
b75536c9 | 942 | AioContext *aio_context = blk_get_aio_context(job->blk); |
4172a003 | 943 | int ret = 0; |
d4a3238a | 944 | |
9e944cb4 | 945 | aio_context_acquire(aio_context); |
80fa2c75 | 946 | job_ref(&job->job); |
d4a3238a | 947 | do { |
30a5c887 | 948 | float progress = 0.0f; |
d4a3238a | 949 | aio_poll(aio_context, true); |
01fe1ca9 VSO |
950 | if (job->job.progress.total) { |
951 | progress = (float)job->job.progress.current / | |
952 | job->job.progress.total * 100.f; | |
30a5c887 KW |
953 | } |
954 | qemu_progress_print(progress, 0); | |
df956ae2 | 955 | } while (!job_is_ready(&job->job) && !job_is_completed(&job->job)); |
d4a3238a | 956 | |
dbe5e6c1 | 957 | if (!job_is_completed(&job->job)) { |
3d70ff53 | 958 | ret = job_complete_sync(&job->job, errp); |
4172a003 | 959 | } else { |
4ad35181 | 960 | ret = job->job.ret; |
4172a003 | 961 | } |
80fa2c75 | 962 | job_unref(&job->job); |
9e944cb4 | 963 | aio_context_release(aio_context); |
687fa1d8 | 964 | |
4172a003 SJ |
965 | /* publish completion progress only when success */ |
966 | if (!ret) { | |
967 | qemu_progress_print(100.f, 0); | |
968 | } | |
d4a3238a HR |
969 | } |
970 | ||
ea2384d3 FB |
971 | static int img_commit(int argc, char **argv) |
972 | { | |
661a0f71 | 973 | int c, ret, flags; |
1b22bffd | 974 | const char *filename, *fmt, *cache, *base; |
26f54e9a | 975 | BlockBackend *blk; |
d4a3238a | 976 | BlockDriverState *bs, *base_bs; |
4ef85a9c | 977 | BlockJob *job; |
687fa1d8 | 978 | bool progress = false, quiet = false, drop = false; |
ce099547 | 979 | bool writethrough; |
d4a3238a HR |
980 | Error *local_err = NULL; |
981 | CommonBlockJobCBInfo cbi; | |
eb769f74 | 982 | bool image_opts = false; |
9e944cb4 | 983 | AioContext *aio_context; |
ea2384d3 FB |
984 | |
985 | fmt = NULL; | |
661a0f71 | 986 | cache = BDRV_DEFAULT_CACHE; |
1b22bffd | 987 | base = NULL; |
ea2384d3 | 988 | for(;;) { |
3babeb15 DB |
989 | static const struct option long_options[] = { |
990 | {"help", no_argument, 0, 'h'}, | |
991 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 992 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
993 | {0, 0, 0, 0} |
994 | }; | |
c9192973 | 995 | c = getopt_long(argc, argv, ":f:ht:b:dpq", |
3babeb15 | 996 | long_options, NULL); |
b8fb60da | 997 | if (c == -1) { |
ea2384d3 | 998 | break; |
b8fb60da | 999 | } |
ea2384d3 | 1000 | switch(c) { |
c9192973 SH |
1001 | case ':': |
1002 | missing_argument(argv[optind - 1]); | |
1003 | break; | |
ef87394c | 1004 | case '?': |
c9192973 SH |
1005 | unrecognized_option(argv[optind - 1]); |
1006 | break; | |
ea2384d3 FB |
1007 | case 'h': |
1008 | help(); | |
1009 | break; | |
1010 | case 'f': | |
1011 | fmt = optarg; | |
1012 | break; | |
661a0f71 FS |
1013 | case 't': |
1014 | cache = optarg; | |
1015 | break; | |
1b22bffd HR |
1016 | case 'b': |
1017 | base = optarg; | |
1018 | /* -b implies -d */ | |
1019 | drop = true; | |
1020 | break; | |
9a86fe48 HR |
1021 | case 'd': |
1022 | drop = true; | |
1023 | break; | |
687fa1d8 HR |
1024 | case 'p': |
1025 | progress = true; | |
1026 | break; | |
f382d43a MR |
1027 | case 'q': |
1028 | quiet = true; | |
1029 | break; | |
3babeb15 DB |
1030 | case OPTION_OBJECT: { |
1031 | QemuOpts *opts; | |
1032 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
1033 | optarg, true); | |
1034 | if (!opts) { | |
1035 | return 1; | |
1036 | } | |
1037 | } break; | |
eb769f74 DB |
1038 | case OPTION_IMAGE_OPTS: |
1039 | image_opts = true; | |
1040 | break; | |
ea2384d3 FB |
1041 | } |
1042 | } | |
687fa1d8 HR |
1043 | |
1044 | /* Progress is not shown in Quiet mode */ | |
1045 | if (quiet) { | |
1046 | progress = false; | |
1047 | } | |
1048 | ||
fc11eb26 | 1049 | if (optind != argc - 1) { |
ac1307ab | 1050 | error_exit("Expecting one image file name"); |
b8fb60da | 1051 | } |
ea2384d3 FB |
1052 | filename = argv[optind++]; |
1053 | ||
3babeb15 DB |
1054 | if (qemu_opts_foreach(&qemu_object_opts, |
1055 | user_creatable_add_opts_foreach, | |
c6e5cdfd | 1056 | qemu_img_object_print_help, &error_fatal)) { |
3babeb15 DB |
1057 | return 1; |
1058 | } | |
1059 | ||
9a86fe48 | 1060 | flags = BDRV_O_RDWR | BDRV_O_UNMAP; |
ce099547 | 1061 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); |
661a0f71 FS |
1062 | if (ret < 0) { |
1063 | error_report("Invalid cache option: %s", cache); | |
a3981eb9 | 1064 | return 1; |
661a0f71 FS |
1065 | } |
1066 | ||
335e9937 FZ |
1067 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet, |
1068 | false); | |
7e7d56d9 MA |
1069 | if (!blk) { |
1070 | return 1; | |
c2abccec | 1071 | } |
7e7d56d9 MA |
1072 | bs = blk_bs(blk); |
1073 | ||
687fa1d8 HR |
1074 | qemu_progress_init(progress, 1.f); |
1075 | qemu_progress_print(0.f, 100); | |
1076 | ||
1b22bffd HR |
1077 | if (base) { |
1078 | base_bs = bdrv_find_backing_image(bs, base); | |
1079 | if (!base_bs) { | |
6b33f3ae HR |
1080 | error_setg(&local_err, |
1081 | "Did not find '%s' in the backing chain of '%s'", | |
1082 | base, filename); | |
1b22bffd HR |
1083 | goto done; |
1084 | } | |
1085 | } else { | |
1086 | /* This is different from QMP, which by default uses the deepest file in | |
1087 | * the backing chain (i.e., the very base); however, the traditional | |
1088 | * behavior of qemu-img commit is using the immediate backing file. */ | |
760e0063 | 1089 | base_bs = backing_bs(bs); |
1b22bffd HR |
1090 | if (!base_bs) { |
1091 | error_setg(&local_err, "Image does not have a backing file"); | |
1092 | goto done; | |
1093 | } | |
d4a3238a HR |
1094 | } |
1095 | ||
1096 | cbi = (CommonBlockJobCBInfo){ | |
1097 | .errp = &local_err, | |
1098 | .bs = bs, | |
1099 | }; | |
1100 | ||
9e944cb4 PB |
1101 | aio_context = bdrv_get_aio_context(bs); |
1102 | aio_context_acquire(aio_context); | |
bb02b65c | 1103 | commit_active_start("commit", bs, base_bs, JOB_DEFAULT, 0, |
0db832f4 | 1104 | BLOCKDEV_ON_ERROR_REPORT, NULL, common_block_job_cb, |
78bbd910 | 1105 | &cbi, false, &local_err); |
9e944cb4 | 1106 | aio_context_release(aio_context); |
d4a3238a HR |
1107 | if (local_err) { |
1108 | goto done; | |
ea2384d3 FB |
1109 | } |
1110 | ||
3f09bfbc KW |
1111 | /* When the block job completes, the BlockBackend reference will point to |
1112 | * the old backing file. In order to avoid that the top image is already | |
1113 | * deleted, so we can still empty it afterwards, increment the reference | |
1114 | * counter here preemptively. */ | |
9a86fe48 | 1115 | if (!drop) { |
3f09bfbc | 1116 | bdrv_ref(bs); |
9a86fe48 HR |
1117 | } |
1118 | ||
4ef85a9c | 1119 | job = block_job_get("commit"); |
2e2db260 | 1120 | assert(job); |
4ef85a9c | 1121 | run_block_job(job, &local_err); |
9a86fe48 HR |
1122 | if (local_err) { |
1123 | goto unref_backing; | |
1124 | } | |
1125 | ||
2d97fde4 HR |
1126 | if (!drop) { |
1127 | BlockBackend *old_backing_blk; | |
1128 | ||
1129 | old_backing_blk = blk_new_with_bs(bs, BLK_PERM_WRITE, BLK_PERM_ALL, | |
1130 | &local_err); | |
1131 | if (!old_backing_blk) { | |
1132 | goto unref_backing; | |
1133 | } | |
1134 | ret = blk_make_empty(old_backing_blk, &local_err); | |
1135 | blk_unref(old_backing_blk); | |
1136 | if (ret == -ENOTSUP) { | |
1137 | error_free(local_err); | |
1138 | local_err = NULL; | |
1139 | } else if (ret < 0) { | |
9a86fe48 HR |
1140 | goto unref_backing; |
1141 | } | |
1142 | } | |
1143 | ||
1144 | unref_backing: | |
1145 | if (!drop) { | |
3f09bfbc | 1146 | bdrv_unref(bs); |
9a86fe48 | 1147 | } |
d4a3238a HR |
1148 | |
1149 | done: | |
687fa1d8 HR |
1150 | qemu_progress_end(); |
1151 | ||
26f54e9a | 1152 | blk_unref(blk); |
d4a3238a HR |
1153 | |
1154 | if (local_err) { | |
6936f299 | 1155 | error_report_err(local_err); |
c2abccec MK |
1156 | return 1; |
1157 | } | |
d4a3238a HR |
1158 | |
1159 | qprintf(quiet, "Image committed.\n"); | |
ea2384d3 FB |
1160 | return 0; |
1161 | } | |
1162 | ||
debb38a4 EB |
1163 | /* |
1164 | * Returns -1 if 'buf' contains only zeroes, otherwise the byte index | |
1165 | * of the first sector boundary within buf where the sector contains a | |
1166 | * non-zero byte. This function is robust to a buffer that is not | |
1167 | * sector-aligned. | |
1168 | */ | |
1169 | static int64_t find_nonzero(const uint8_t *buf, int64_t n) | |
1170 | { | |
1171 | int64_t i; | |
1172 | int64_t end = QEMU_ALIGN_DOWN(n, BDRV_SECTOR_SIZE); | |
1173 | ||
1174 | for (i = 0; i < end; i += BDRV_SECTOR_SIZE) { | |
1175 | if (!buffer_is_zero(buf + i, BDRV_SECTOR_SIZE)) { | |
1176 | return i; | |
1177 | } | |
1178 | } | |
1179 | if (i < n && !buffer_is_zero(buf + i, n - end)) { | |
1180 | return i; | |
1181 | } | |
1182 | return -1; | |
1183 | } | |
1184 | ||
f58c7b35 TS |
1185 | /* |
1186 | * Returns true iff the first sector pointed to by 'buf' contains at least | |
1187 | * a non-NUL byte. | |
1188 | * | |
1189 | * 'pnum' is set to the number of sectors (including and immediately following | |
1190 | * the first one) that are known to be in the same allocated/unallocated state. | |
8dcd3c9b PL |
1191 | * The function will try to align the end offset to alignment boundaries so |
1192 | * that the request will at least end aligned and consequtive requests will | |
1193 | * also start at an aligned offset. | |
f58c7b35 | 1194 | */ |
8dcd3c9b PL |
1195 | static int is_allocated_sectors(const uint8_t *buf, int n, int *pnum, |
1196 | int64_t sector_num, int alignment) | |
ea2384d3 | 1197 | { |
1a6d39fd | 1198 | bool is_zero; |
8dcd3c9b | 1199 | int i, tail; |
ea2384d3 FB |
1200 | |
1201 | if (n <= 0) { | |
1202 | *pnum = 0; | |
1203 | return 0; | |
1204 | } | |
1a6d39fd | 1205 | is_zero = buffer_is_zero(buf, 512); |
ea2384d3 FB |
1206 | for(i = 1; i < n; i++) { |
1207 | buf += 512; | |
1a6d39fd | 1208 | if (is_zero != buffer_is_zero(buf, 512)) { |
ea2384d3 | 1209 | break; |
1a6d39fd | 1210 | } |
ea2384d3 | 1211 | } |
8dcd3c9b PL |
1212 | |
1213 | tail = (sector_num + i) & (alignment - 1); | |
1214 | if (tail) { | |
1215 | if (is_zero && i <= tail) { | |
1216 | /* treat unallocated areas which only consist | |
1217 | * of a small tail as allocated. */ | |
1218 | is_zero = false; | |
1219 | } | |
1220 | if (!is_zero) { | |
1221 | /* align up end offset of allocated areas. */ | |
1222 | i += alignment - tail; | |
1223 | i = MIN(i, n); | |
1224 | } else { | |
1225 | /* align down end offset of zero areas. */ | |
1226 | i -= tail; | |
1227 | } | |
1228 | } | |
ea2384d3 | 1229 | *pnum = i; |
1a6d39fd | 1230 | return !is_zero; |
ea2384d3 FB |
1231 | } |
1232 | ||
a22f123c KW |
1233 | /* |
1234 | * Like is_allocated_sectors, but if the buffer starts with a used sector, | |
1235 | * up to 'min' consecutive sectors containing zeros are ignored. This avoids | |
1236 | * breaking up write requests for only small sparse areas. | |
1237 | */ | |
1238 | static int is_allocated_sectors_min(const uint8_t *buf, int n, int *pnum, | |
8dcd3c9b | 1239 | int min, int64_t sector_num, int alignment) |
a22f123c KW |
1240 | { |
1241 | int ret; | |
1242 | int num_checked, num_used; | |
1243 | ||
1244 | if (n < min) { | |
1245 | min = n; | |
1246 | } | |
1247 | ||
8dcd3c9b | 1248 | ret = is_allocated_sectors(buf, n, pnum, sector_num, alignment); |
a22f123c KW |
1249 | if (!ret) { |
1250 | return ret; | |
1251 | } | |
1252 | ||
1253 | num_used = *pnum; | |
1254 | buf += BDRV_SECTOR_SIZE * *pnum; | |
1255 | n -= *pnum; | |
8dcd3c9b | 1256 | sector_num += *pnum; |
a22f123c KW |
1257 | num_checked = num_used; |
1258 | ||
1259 | while (n > 0) { | |
8dcd3c9b | 1260 | ret = is_allocated_sectors(buf, n, pnum, sector_num, alignment); |
a22f123c KW |
1261 | |
1262 | buf += BDRV_SECTOR_SIZE * *pnum; | |
1263 | n -= *pnum; | |
8dcd3c9b | 1264 | sector_num += *pnum; |
a22f123c KW |
1265 | num_checked += *pnum; |
1266 | if (ret) { | |
1267 | num_used = num_checked; | |
1268 | } else if (*pnum >= min) { | |
1269 | break; | |
1270 | } | |
1271 | } | |
1272 | ||
1273 | *pnum = num_used; | |
1274 | return 1; | |
1275 | } | |
1276 | ||
3e85c6fd | 1277 | /* |
dc61cd3b EB |
1278 | * Compares two buffers sector by sector. Returns 0 if the first |
1279 | * sector of each buffer matches, non-zero otherwise. | |
3e85c6fd | 1280 | * |
dc61cd3b EB |
1281 | * pnum is set to the sector-aligned size of the buffer prefix that |
1282 | * has the same matching status as the first sector. | |
3e85c6fd | 1283 | */ |
dc61cd3b EB |
1284 | static int compare_buffers(const uint8_t *buf1, const uint8_t *buf2, |
1285 | int64_t bytes, int64_t *pnum) | |
3e85c6fd | 1286 | { |
8c1ac475 | 1287 | bool res; |
dc61cd3b | 1288 | int64_t i = MIN(bytes, BDRV_SECTOR_SIZE); |
3e85c6fd | 1289 | |
dc61cd3b | 1290 | assert(bytes > 0); |
3e85c6fd | 1291 | |
dc61cd3b EB |
1292 | res = !!memcmp(buf1, buf2, i); |
1293 | while (i < bytes) { | |
1294 | int64_t len = MIN(bytes - i, BDRV_SECTOR_SIZE); | |
3e85c6fd | 1295 | |
dc61cd3b | 1296 | if (!!memcmp(buf1 + i, buf2 + i, len) != res) { |
3e85c6fd KW |
1297 | break; |
1298 | } | |
dc61cd3b | 1299 | i += len; |
3e85c6fd KW |
1300 | } |
1301 | ||
1302 | *pnum = i; | |
1303 | return res; | |
1304 | } | |
1305 | ||
97ede57a | 1306 | #define IO_BUF_SIZE (2 * MiB) |
ea2384d3 | 1307 | |
d14ed18c MR |
1308 | /* |
1309 | * Check if passed sectors are empty (not allocated or contain only 0 bytes) | |
1310 | * | |
0608e40e EB |
1311 | * Intended for use by 'qemu-img compare': Returns 0 in case sectors are |
1312 | * filled with 0, 1 if sectors contain non-zero data (this is a comparison | |
1313 | * failure), and 4 on error (the exit status for read errors), after emitting | |
1314 | * an error message. | |
d14ed18c | 1315 | * |
f1d3cd79 | 1316 | * @param blk: BlockBackend for the image |
c41508ed EB |
1317 | * @param offset: Starting offset to check |
1318 | * @param bytes: Number of bytes to check | |
d14ed18c MR |
1319 | * @param filename: Name of disk file we are checking (logging purpose) |
1320 | * @param buffer: Allocated buffer for storing read data | |
1321 | * @param quiet: Flag for quiet mode | |
1322 | */ | |
c41508ed EB |
1323 | static int check_empty_sectors(BlockBackend *blk, int64_t offset, |
1324 | int64_t bytes, const char *filename, | |
d14ed18c MR |
1325 | uint8_t *buffer, bool quiet) |
1326 | { | |
debb38a4 EB |
1327 | int ret = 0; |
1328 | int64_t idx; | |
1329 | ||
c41508ed | 1330 | ret = blk_pread(blk, offset, buffer, bytes); |
d14ed18c MR |
1331 | if (ret < 0) { |
1332 | error_report("Error while reading offset %" PRId64 " of %s: %s", | |
c41508ed | 1333 | offset, filename, strerror(-ret)); |
0608e40e | 1334 | return 4; |
d14ed18c | 1335 | } |
c41508ed | 1336 | idx = find_nonzero(buffer, bytes); |
debb38a4 | 1337 | if (idx >= 0) { |
d14ed18c | 1338 | qprintf(quiet, "Content mismatch at offset %" PRId64 "!\n", |
c41508ed | 1339 | offset + idx); |
d14ed18c MR |
1340 | return 1; |
1341 | } | |
1342 | ||
1343 | return 0; | |
1344 | } | |
1345 | ||
1346 | /* | |
1347 | * Compares two images. Exit codes: | |
1348 | * | |
1349 | * 0 - Images are identical | |
1350 | * 1 - Images differ | |
1351 | * >1 - Error occurred | |
1352 | */ | |
1353 | static int img_compare(int argc, char **argv) | |
1354 | { | |
40055951 | 1355 | const char *fmt1 = NULL, *fmt2 = NULL, *cache, *filename1, *filename2; |
26f54e9a | 1356 | BlockBackend *blk1, *blk2; |
d14ed18c | 1357 | BlockDriverState *bs1, *bs2; |
033d9fc2 | 1358 | int64_t total_size1, total_size2; |
d14ed18c | 1359 | uint8_t *buf1 = NULL, *buf2 = NULL; |
31826642 | 1360 | int64_t pnum1, pnum2; |
d14ed18c MR |
1361 | int allocated1, allocated2; |
1362 | int ret = 0; /* return value - 0 Ident, 1 Different, >1 Error */ | |
1363 | bool progress = false, quiet = false, strict = false; | |
40055951 | 1364 | int flags; |
ce099547 | 1365 | bool writethrough; |
033d9fc2 EB |
1366 | int64_t total_size; |
1367 | int64_t offset = 0; | |
1368 | int64_t chunk; | |
dc61cd3b | 1369 | int c; |
d14ed18c | 1370 | uint64_t progress_base; |
eb769f74 | 1371 | bool image_opts = false; |
335e9937 | 1372 | bool force_share = false; |
d14ed18c | 1373 | |
40055951 | 1374 | cache = BDRV_DEFAULT_CACHE; |
d14ed18c | 1375 | for (;;) { |
3babeb15 DB |
1376 | static const struct option long_options[] = { |
1377 | {"help", no_argument, 0, 'h'}, | |
1378 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 1379 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
335e9937 | 1380 | {"force-share", no_argument, 0, 'U'}, |
3babeb15 DB |
1381 | {0, 0, 0, 0} |
1382 | }; | |
335e9937 | 1383 | c = getopt_long(argc, argv, ":hf:F:T:pqsU", |
3babeb15 | 1384 | long_options, NULL); |
d14ed18c MR |
1385 | if (c == -1) { |
1386 | break; | |
1387 | } | |
1388 | switch (c) { | |
c9192973 SH |
1389 | case ':': |
1390 | missing_argument(argv[optind - 1]); | |
1391 | break; | |
d14ed18c | 1392 | case '?': |
c9192973 SH |
1393 | unrecognized_option(argv[optind - 1]); |
1394 | break; | |
d14ed18c MR |
1395 | case 'h': |
1396 | help(); | |
1397 | break; | |
1398 | case 'f': | |
1399 | fmt1 = optarg; | |
1400 | break; | |
1401 | case 'F': | |
1402 | fmt2 = optarg; | |
1403 | break; | |
40055951 HR |
1404 | case 'T': |
1405 | cache = optarg; | |
1406 | break; | |
d14ed18c MR |
1407 | case 'p': |
1408 | progress = true; | |
1409 | break; | |
1410 | case 'q': | |
1411 | quiet = true; | |
1412 | break; | |
1413 | case 's': | |
1414 | strict = true; | |
1415 | break; | |
335e9937 FZ |
1416 | case 'U': |
1417 | force_share = true; | |
1418 | break; | |
3babeb15 DB |
1419 | case OPTION_OBJECT: { |
1420 | QemuOpts *opts; | |
1421 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
1422 | optarg, true); | |
1423 | if (!opts) { | |
1424 | ret = 2; | |
1425 | goto out4; | |
1426 | } | |
1427 | } break; | |
eb769f74 DB |
1428 | case OPTION_IMAGE_OPTS: |
1429 | image_opts = true; | |
1430 | break; | |
d14ed18c MR |
1431 | } |
1432 | } | |
1433 | ||
1434 | /* Progress is not shown in Quiet mode */ | |
1435 | if (quiet) { | |
1436 | progress = false; | |
1437 | } | |
1438 | ||
1439 | ||
fc11eb26 | 1440 | if (optind != argc - 2) { |
ac1307ab | 1441 | error_exit("Expecting two image file names"); |
d14ed18c MR |
1442 | } |
1443 | filename1 = argv[optind++]; | |
1444 | filename2 = argv[optind++]; | |
1445 | ||
3babeb15 DB |
1446 | if (qemu_opts_foreach(&qemu_object_opts, |
1447 | user_creatable_add_opts_foreach, | |
c6e5cdfd | 1448 | qemu_img_object_print_help, &error_fatal)) { |
3babeb15 DB |
1449 | ret = 2; |
1450 | goto out4; | |
1451 | } | |
1452 | ||
cbda016d SH |
1453 | /* Initialize before goto out */ |
1454 | qemu_progress_init(progress, 2.0); | |
1455 | ||
ce099547 KW |
1456 | flags = 0; |
1457 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); | |
40055951 HR |
1458 | if (ret < 0) { |
1459 | error_report("Invalid source cache option: %s", cache); | |
1460 | ret = 2; | |
1461 | goto out3; | |
1462 | } | |
1463 | ||
335e9937 FZ |
1464 | blk1 = img_open(image_opts, filename1, fmt1, flags, writethrough, quiet, |
1465 | force_share); | |
7e7d56d9 | 1466 | if (!blk1) { |
d14ed18c | 1467 | ret = 2; |
7e7d56d9 | 1468 | goto out3; |
d14ed18c MR |
1469 | } |
1470 | ||
335e9937 FZ |
1471 | blk2 = img_open(image_opts, filename2, fmt2, flags, writethrough, quiet, |
1472 | force_share); | |
7e7d56d9 | 1473 | if (!blk2) { |
d14ed18c | 1474 | ret = 2; |
7e7d56d9 | 1475 | goto out2; |
d14ed18c | 1476 | } |
eb769f74 | 1477 | bs1 = blk_bs(blk1); |
7e7d56d9 | 1478 | bs2 = blk_bs(blk2); |
d14ed18c | 1479 | |
f1d3cd79 HR |
1480 | buf1 = blk_blockalign(blk1, IO_BUF_SIZE); |
1481 | buf2 = blk_blockalign(blk2, IO_BUF_SIZE); | |
033d9fc2 EB |
1482 | total_size1 = blk_getlength(blk1); |
1483 | if (total_size1 < 0) { | |
52bf1e72 | 1484 | error_report("Can't get size of %s: %s", |
033d9fc2 | 1485 | filename1, strerror(-total_size1)); |
52bf1e72 MA |
1486 | ret = 4; |
1487 | goto out; | |
1488 | } | |
033d9fc2 EB |
1489 | total_size2 = blk_getlength(blk2); |
1490 | if (total_size2 < 0) { | |
52bf1e72 | 1491 | error_report("Can't get size of %s: %s", |
033d9fc2 | 1492 | filename2, strerror(-total_size2)); |
52bf1e72 MA |
1493 | ret = 4; |
1494 | goto out; | |
1495 | } | |
033d9fc2 EB |
1496 | total_size = MIN(total_size1, total_size2); |
1497 | progress_base = MAX(total_size1, total_size2); | |
d14ed18c MR |
1498 | |
1499 | qemu_progress_print(0, 100); | |
1500 | ||
033d9fc2 | 1501 | if (strict && total_size1 != total_size2) { |
d14ed18c MR |
1502 | ret = 1; |
1503 | qprintf(quiet, "Strict mode: Image size mismatch!\n"); | |
1504 | goto out; | |
1505 | } | |
1506 | ||
033d9fc2 | 1507 | while (offset < total_size) { |
31826642 | 1508 | int status1, status2; |
67a0fd2a | 1509 | |
033d9fc2 EB |
1510 | status1 = bdrv_block_status_above(bs1, NULL, offset, |
1511 | total_size1 - offset, &pnum1, NULL, | |
1512 | NULL); | |
25ad8e6e | 1513 | if (status1 < 0) { |
d14ed18c MR |
1514 | ret = 3; |
1515 | error_report("Sector allocation test failed for %s", filename1); | |
1516 | goto out; | |
1517 | } | |
25ad8e6e | 1518 | allocated1 = status1 & BDRV_BLOCK_ALLOCATED; |
d14ed18c | 1519 | |
033d9fc2 EB |
1520 | status2 = bdrv_block_status_above(bs2, NULL, offset, |
1521 | total_size2 - offset, &pnum2, NULL, | |
1522 | NULL); | |
25ad8e6e | 1523 | if (status2 < 0) { |
d14ed18c MR |
1524 | ret = 3; |
1525 | error_report("Sector allocation test failed for %s", filename2); | |
1526 | goto out; | |
1527 | } | |
25ad8e6e | 1528 | allocated2 = status2 & BDRV_BLOCK_ALLOCATED; |
7daddc61 EB |
1529 | |
1530 | assert(pnum1 && pnum2); | |
033d9fc2 | 1531 | chunk = MIN(pnum1, pnum2); |
d14ed18c | 1532 | |
25ad8e6e | 1533 | if (strict) { |
31826642 | 1534 | if (status1 != status2) { |
25ad8e6e FZ |
1535 | ret = 1; |
1536 | qprintf(quiet, "Strict mode: Offset %" PRId64 | |
033d9fc2 | 1537 | " block status mismatch!\n", offset); |
25ad8e6e FZ |
1538 | goto out; |
1539 | } | |
1540 | } | |
1541 | if ((status1 & BDRV_BLOCK_ZERO) && (status2 & BDRV_BLOCK_ZERO)) { | |
7daddc61 | 1542 | /* nothing to do */ |
25ad8e6e | 1543 | } else if (allocated1 == allocated2) { |
d14ed18c | 1544 | if (allocated1) { |
dc61cd3b EB |
1545 | int64_t pnum; |
1546 | ||
033d9fc2 EB |
1547 | chunk = MIN(chunk, IO_BUF_SIZE); |
1548 | ret = blk_pread(blk1, offset, buf1, chunk); | |
d14ed18c | 1549 | if (ret < 0) { |
033d9fc2 EB |
1550 | error_report("Error while reading offset %" PRId64 |
1551 | " of %s: %s", | |
1552 | offset, filename1, strerror(-ret)); | |
d14ed18c MR |
1553 | ret = 4; |
1554 | goto out; | |
1555 | } | |
033d9fc2 | 1556 | ret = blk_pread(blk2, offset, buf2, chunk); |
d14ed18c MR |
1557 | if (ret < 0) { |
1558 | error_report("Error while reading offset %" PRId64 | |
033d9fc2 EB |
1559 | " of %s: %s", |
1560 | offset, filename2, strerror(-ret)); | |
d14ed18c MR |
1561 | ret = 4; |
1562 | goto out; | |
1563 | } | |
033d9fc2 EB |
1564 | ret = compare_buffers(buf1, buf2, chunk, &pnum); |
1565 | if (ret || pnum != chunk) { | |
d14ed18c | 1566 | qprintf(quiet, "Content mismatch at offset %" PRId64 "!\n", |
033d9fc2 | 1567 | offset + (ret ? 0 : pnum)); |
36452f12 | 1568 | ret = 1; |
d14ed18c MR |
1569 | goto out; |
1570 | } | |
1571 | } | |
1572 | } else { | |
033d9fc2 | 1573 | chunk = MIN(chunk, IO_BUF_SIZE); |
d14ed18c | 1574 | if (allocated1) { |
033d9fc2 | 1575 | ret = check_empty_sectors(blk1, offset, chunk, |
d14ed18c MR |
1576 | filename1, buf1, quiet); |
1577 | } else { | |
033d9fc2 | 1578 | ret = check_empty_sectors(blk2, offset, chunk, |
d14ed18c MR |
1579 | filename2, buf1, quiet); |
1580 | } | |
1581 | if (ret) { | |
d14ed18c MR |
1582 | goto out; |
1583 | } | |
1584 | } | |
033d9fc2 EB |
1585 | offset += chunk; |
1586 | qemu_progress_print(((float) chunk / progress_base) * 100, 100); | |
d14ed18c MR |
1587 | } |
1588 | ||
033d9fc2 | 1589 | if (total_size1 != total_size2) { |
f1d3cd79 | 1590 | BlockBackend *blk_over; |
d14ed18c MR |
1591 | const char *filename_over; |
1592 | ||
1593 | qprintf(quiet, "Warning: Image size mismatch!\n"); | |
033d9fc2 | 1594 | if (total_size1 > total_size2) { |
f1d3cd79 | 1595 | blk_over = blk1; |
d14ed18c MR |
1596 | filename_over = filename1; |
1597 | } else { | |
f1d3cd79 | 1598 | blk_over = blk2; |
d14ed18c MR |
1599 | filename_over = filename2; |
1600 | } | |
1601 | ||
033d9fc2 EB |
1602 | while (offset < progress_base) { |
1603 | ret = bdrv_block_status_above(blk_bs(blk_over), NULL, offset, | |
1604 | progress_base - offset, &chunk, | |
1605 | NULL, NULL); | |
d14ed18c MR |
1606 | if (ret < 0) { |
1607 | ret = 3; | |
1608 | error_report("Sector allocation test failed for %s", | |
1609 | filename_over); | |
1610 | goto out; | |
1611 | ||
1612 | } | |
391cb1aa | 1613 | if (ret & BDRV_BLOCK_ALLOCATED && !(ret & BDRV_BLOCK_ZERO)) { |
033d9fc2 EB |
1614 | chunk = MIN(chunk, IO_BUF_SIZE); |
1615 | ret = check_empty_sectors(blk_over, offset, chunk, | |
d14ed18c MR |
1616 | filename_over, buf1, quiet); |
1617 | if (ret) { | |
d14ed18c MR |
1618 | goto out; |
1619 | } | |
1620 | } | |
033d9fc2 EB |
1621 | offset += chunk; |
1622 | qemu_progress_print(((float) chunk / progress_base) * 100, 100); | |
d14ed18c MR |
1623 | } |
1624 | } | |
1625 | ||
1626 | qprintf(quiet, "Images are identical.\n"); | |
1627 | ret = 0; | |
1628 | ||
1629 | out: | |
d14ed18c MR |
1630 | qemu_vfree(buf1); |
1631 | qemu_vfree(buf2); | |
26f54e9a | 1632 | blk_unref(blk2); |
d14ed18c | 1633 | out2: |
26f54e9a | 1634 | blk_unref(blk1); |
d14ed18c MR |
1635 | out3: |
1636 | qemu_progress_end(); | |
3babeb15 | 1637 | out4: |
d14ed18c MR |
1638 | return ret; |
1639 | } | |
1640 | ||
690c7301 KW |
1641 | enum ImgConvertBlockStatus { |
1642 | BLK_DATA, | |
1643 | BLK_ZERO, | |
1644 | BLK_BACKING_FILE, | |
1645 | }; | |
1646 | ||
2d9187bc PL |
1647 | #define MAX_COROUTINES 16 |
1648 | ||
690c7301 KW |
1649 | typedef struct ImgConvertState { |
1650 | BlockBackend **src; | |
1651 | int64_t *src_sectors; | |
2d9187bc | 1652 | int src_num; |
690c7301 KW |
1653 | int64_t total_sectors; |
1654 | int64_t allocated_sectors; | |
2d9187bc PL |
1655 | int64_t allocated_done; |
1656 | int64_t sector_num; | |
1657 | int64_t wr_offs; | |
690c7301 KW |
1658 | enum ImgConvertBlockStatus status; |
1659 | int64_t sector_next_status; | |
1660 | BlockBackend *target; | |
1661 | bool has_zero_init; | |
1662 | bool compressed; | |
351c8eff | 1663 | bool unallocated_blocks_are_zero; |
4d7c487e | 1664 | bool target_is_new; |
690c7301 | 1665 | bool target_has_backing; |
351c8eff | 1666 | int64_t target_backing_sectors; /* negative if unknown */ |
2d9187bc | 1667 | bool wr_in_order; |
ee5306d0 | 1668 | bool copy_range; |
8eaac025 | 1669 | bool salvage; |
3d96cb91 | 1670 | bool quiet; |
690c7301 | 1671 | int min_sparse; |
8dcd3c9b | 1672 | int alignment; |
690c7301 KW |
1673 | size_t cluster_sectors; |
1674 | size_t buf_sectors; | |
9fd77f99 | 1675 | long num_coroutines; |
2d9187bc PL |
1676 | int running_coroutines; |
1677 | Coroutine *co[MAX_COROUTINES]; | |
1678 | int64_t wait_sector_num[MAX_COROUTINES]; | |
1679 | CoMutex lock; | |
1680 | int ret; | |
690c7301 KW |
1681 | } ImgConvertState; |
1682 | ||
2d9187bc PL |
1683 | static void convert_select_part(ImgConvertState *s, int64_t sector_num, |
1684 | int *src_cur, int64_t *src_cur_offset) | |
690c7301 | 1685 | { |
2d9187bc PL |
1686 | *src_cur = 0; |
1687 | *src_cur_offset = 0; | |
1688 | while (sector_num - *src_cur_offset >= s->src_sectors[*src_cur]) { | |
1689 | *src_cur_offset += s->src_sectors[*src_cur]; | |
1690 | (*src_cur)++; | |
1691 | assert(*src_cur < s->src_num); | |
690c7301 KW |
1692 | } |
1693 | } | |
1694 | ||
1695 | static int convert_iteration_sectors(ImgConvertState *s, int64_t sector_num) | |
1696 | { | |
31826642 EB |
1697 | int64_t src_cur_offset; |
1698 | int ret, n, src_cur; | |
351c8eff | 1699 | bool post_backing_zero = false; |
690c7301 | 1700 | |
2d9187bc | 1701 | convert_select_part(s, sector_num, &src_cur, &src_cur_offset); |
690c7301 KW |
1702 | |
1703 | assert(s->total_sectors > sector_num); | |
1704 | n = MIN(s->total_sectors - sector_num, BDRV_REQUEST_MAX_SECTORS); | |
1705 | ||
351c8eff HR |
1706 | if (s->target_backing_sectors >= 0) { |
1707 | if (sector_num >= s->target_backing_sectors) { | |
1708 | post_backing_zero = s->unallocated_blocks_are_zero; | |
1709 | } else if (sector_num + n > s->target_backing_sectors) { | |
1710 | /* Split requests around target_backing_sectors (because | |
1711 | * starting from there, zeros are handled differently) */ | |
1712 | n = s->target_backing_sectors - sector_num; | |
1713 | } | |
1714 | } | |
1715 | ||
690c7301 | 1716 | if (s->sector_next_status <= sector_num) { |
8eaac025 HR |
1717 | uint64_t offset = (sector_num - src_cur_offset) * BDRV_SECTOR_SIZE; |
1718 | int64_t count; | |
31826642 | 1719 | |
8eaac025 HR |
1720 | do { |
1721 | count = n * BDRV_SECTOR_SIZE; | |
1722 | ||
1723 | if (s->target_has_backing) { | |
1724 | ret = bdrv_block_status(blk_bs(s->src[src_cur]), offset, | |
1725 | count, &count, NULL, NULL); | |
1726 | } else { | |
1727 | ret = bdrv_block_status_above(blk_bs(s->src[src_cur]), NULL, | |
1728 | offset, count, &count, NULL, | |
1729 | NULL); | |
1730 | } | |
1731 | ||
1732 | if (ret < 0) { | |
1733 | if (s->salvage) { | |
1734 | if (n == 1) { | |
1735 | if (!s->quiet) { | |
1736 | warn_report("error while reading block status at " | |
1737 | "offset %" PRIu64 ": %s", offset, | |
1738 | strerror(-ret)); | |
1739 | } | |
1740 | /* Just try to read the data, then */ | |
1741 | ret = BDRV_BLOCK_DATA; | |
1742 | count = BDRV_SECTOR_SIZE; | |
1743 | } else { | |
1744 | /* Retry on a shorter range */ | |
1745 | n = DIV_ROUND_UP(n, 4); | |
1746 | } | |
1747 | } else { | |
1748 | error_report("error while reading block status at offset " | |
1749 | "%" PRIu64 ": %s", offset, strerror(-ret)); | |
1750 | return ret; | |
1751 | } | |
1752 | } | |
1753 | } while (ret < 0); | |
237d78f8 | 1754 | |
31826642 | 1755 | n = DIV_ROUND_UP(count, BDRV_SECTOR_SIZE); |
690c7301 KW |
1756 | |
1757 | if (ret & BDRV_BLOCK_ZERO) { | |
351c8eff | 1758 | s->status = post_backing_zero ? BLK_BACKING_FILE : BLK_ZERO; |
690c7301 KW |
1759 | } else if (ret & BDRV_BLOCK_DATA) { |
1760 | s->status = BLK_DATA; | |
690c7301 | 1761 | } else { |
9f1b92ad | 1762 | s->status = s->target_has_backing ? BLK_BACKING_FILE : BLK_DATA; |
690c7301 KW |
1763 | } |
1764 | ||
1765 | s->sector_next_status = sector_num + n; | |
1766 | } | |
1767 | ||
1768 | n = MIN(n, s->sector_next_status - sector_num); | |
1769 | if (s->status == BLK_DATA) { | |
1770 | n = MIN(n, s->buf_sectors); | |
1771 | } | |
1772 | ||
1773 | /* We need to write complete clusters for compressed images, so if an | |
1774 | * unallocated area is shorter than that, we must consider the whole | |
1775 | * cluster allocated. */ | |
1776 | if (s->compressed) { | |
1777 | if (n < s->cluster_sectors) { | |
1778 | n = MIN(s->cluster_sectors, s->total_sectors - sector_num); | |
1779 | s->status = BLK_DATA; | |
1780 | } else { | |
1781 | n = QEMU_ALIGN_DOWN(n, s->cluster_sectors); | |
1782 | } | |
1783 | } | |
1784 | ||
1785 | return n; | |
1786 | } | |
1787 | ||
2d9187bc PL |
1788 | static int coroutine_fn convert_co_read(ImgConvertState *s, int64_t sector_num, |
1789 | int nb_sectors, uint8_t *buf) | |
690c7301 | 1790 | { |
8eaac025 | 1791 | uint64_t single_read_until = 0; |
2d9187bc | 1792 | int n, ret; |
690c7301 | 1793 | |
690c7301 KW |
1794 | assert(nb_sectors <= s->buf_sectors); |
1795 | while (nb_sectors > 0) { | |
1796 | BlockBackend *blk; | |
2d9187bc PL |
1797 | int src_cur; |
1798 | int64_t bs_sectors, src_cur_offset; | |
8eaac025 | 1799 | uint64_t offset; |
690c7301 KW |
1800 | |
1801 | /* In the case of compression with multiple source files, we can get a | |
1802 | * nb_sectors that spreads into the next part. So we must be able to | |
1803 | * read across multiple BDSes for one convert_read() call. */ | |
2d9187bc PL |
1804 | convert_select_part(s, sector_num, &src_cur, &src_cur_offset); |
1805 | blk = s->src[src_cur]; | |
1806 | bs_sectors = s->src_sectors[src_cur]; | |
1807 | ||
8eaac025 HR |
1808 | offset = (sector_num - src_cur_offset) << BDRV_SECTOR_BITS; |
1809 | ||
2d9187bc | 1810 | n = MIN(nb_sectors, bs_sectors - (sector_num - src_cur_offset)); |
8eaac025 HR |
1811 | if (single_read_until > offset) { |
1812 | n = 1; | |
1813 | } | |
2d9187bc | 1814 | |
8eaac025 | 1815 | ret = blk_co_pread(blk, offset, n << BDRV_SECTOR_BITS, buf, 0); |
690c7301 | 1816 | if (ret < 0) { |
8eaac025 HR |
1817 | if (s->salvage) { |
1818 | if (n > 1) { | |
1819 | single_read_until = offset + (n << BDRV_SECTOR_BITS); | |
1820 | continue; | |
1821 | } else { | |
1822 | if (!s->quiet) { | |
1823 | warn_report("error while reading offset %" PRIu64 | |
1824 | ": %s", offset, strerror(-ret)); | |
1825 | } | |
1826 | memset(buf, 0, BDRV_SECTOR_SIZE); | |
1827 | } | |
1828 | } else { | |
1829 | return ret; | |
1830 | } | |
690c7301 KW |
1831 | } |
1832 | ||
1833 | sector_num += n; | |
1834 | nb_sectors -= n; | |
1835 | buf += n * BDRV_SECTOR_SIZE; | |
1836 | } | |
1837 | ||
1838 | return 0; | |
1839 | } | |
1840 | ||
2d9187bc PL |
1841 | |
1842 | static int coroutine_fn convert_co_write(ImgConvertState *s, int64_t sector_num, | |
1843 | int nb_sectors, uint8_t *buf, | |
1844 | enum ImgConvertBlockStatus status) | |
690c7301 KW |
1845 | { |
1846 | int ret; | |
1847 | ||
1848 | while (nb_sectors > 0) { | |
1849 | int n = nb_sectors; | |
db933fbe LC |
1850 | BdrvRequestFlags flags = s->compressed ? BDRV_REQ_WRITE_COMPRESSED : 0; |
1851 | ||
2d9187bc | 1852 | switch (status) { |
690c7301 KW |
1853 | case BLK_BACKING_FILE: |
1854 | /* If we have a backing file, leave clusters unallocated that are | |
1855 | * unallocated in the source image, so that the backing file is | |
1856 | * visible at the respective offset. */ | |
1857 | assert(s->target_has_backing); | |
1858 | break; | |
1859 | ||
1860 | case BLK_DATA: | |
db933fbe LC |
1861 | /* If we're told to keep the target fully allocated (-S 0) or there |
1862 | * is real non-zero data, we must write it. Otherwise we can treat | |
1863 | * it as zero sectors. | |
1864 | * Compressed clusters need to be written as a whole, so in that | |
1865 | * case we can only save the write if the buffer is completely | |
1866 | * zeroed. */ | |
690c7301 | 1867 | if (!s->min_sparse || |
db933fbe | 1868 | (!s->compressed && |
8dcd3c9b PL |
1869 | is_allocated_sectors_min(buf, n, &n, s->min_sparse, |
1870 | sector_num, s->alignment)) || | |
db933fbe LC |
1871 | (s->compressed && |
1872 | !buffer_is_zero(buf, n * BDRV_SECTOR_SIZE))) | |
690c7301 | 1873 | { |
265a7e54 VSO |
1874 | ret = blk_co_pwrite(s->target, sector_num << BDRV_SECTOR_BITS, |
1875 | n << BDRV_SECTOR_BITS, buf, flags); | |
690c7301 KW |
1876 | if (ret < 0) { |
1877 | return ret; | |
1878 | } | |
1879 | break; | |
1880 | } | |
1881 | /* fall-through */ | |
1882 | ||
1883 | case BLK_ZERO: | |
1884 | if (s->has_zero_init) { | |
db933fbe | 1885 | assert(!s->target_has_backing); |
690c7301 KW |
1886 | break; |
1887 | } | |
2d9187bc PL |
1888 | ret = blk_co_pwrite_zeroes(s->target, |
1889 | sector_num << BDRV_SECTOR_BITS, | |
a3d6ae22 NS |
1890 | n << BDRV_SECTOR_BITS, |
1891 | BDRV_REQ_MAY_UNMAP); | |
690c7301 KW |
1892 | if (ret < 0) { |
1893 | return ret; | |
1894 | } | |
1895 | break; | |
1896 | } | |
1897 | ||
1898 | sector_num += n; | |
1899 | nb_sectors -= n; | |
1900 | buf += n * BDRV_SECTOR_SIZE; | |
1901 | } | |
1902 | ||
1903 | return 0; | |
1904 | } | |
1905 | ||
ee5306d0 FZ |
1906 | static int coroutine_fn convert_co_copy_range(ImgConvertState *s, int64_t sector_num, |
1907 | int nb_sectors) | |
1908 | { | |
1909 | int n, ret; | |
1910 | ||
1911 | while (nb_sectors > 0) { | |
1912 | BlockBackend *blk; | |
1913 | int src_cur; | |
1914 | int64_t bs_sectors, src_cur_offset; | |
1915 | int64_t offset; | |
1916 | ||
1917 | convert_select_part(s, sector_num, &src_cur, &src_cur_offset); | |
1918 | offset = (sector_num - src_cur_offset) << BDRV_SECTOR_BITS; | |
1919 | blk = s->src[src_cur]; | |
1920 | bs_sectors = s->src_sectors[src_cur]; | |
1921 | ||
1922 | n = MIN(nb_sectors, bs_sectors - (sector_num - src_cur_offset)); | |
1923 | ||
1924 | ret = blk_co_copy_range(blk, offset, s->target, | |
1925 | sector_num << BDRV_SECTOR_BITS, | |
67b51fb9 | 1926 | n << BDRV_SECTOR_BITS, 0, 0); |
ee5306d0 FZ |
1927 | if (ret < 0) { |
1928 | return ret; | |
1929 | } | |
1930 | ||
1931 | sector_num += n; | |
1932 | nb_sectors -= n; | |
1933 | } | |
1934 | return 0; | |
1935 | } | |
1936 | ||
2d9187bc | 1937 | static void coroutine_fn convert_co_do_copy(void *opaque) |
690c7301 | 1938 | { |
2d9187bc | 1939 | ImgConvertState *s = opaque; |
690c7301 | 1940 | uint8_t *buf = NULL; |
2d9187bc PL |
1941 | int ret, i; |
1942 | int index = -1; | |
1943 | ||
1944 | for (i = 0; i < s->num_coroutines; i++) { | |
1945 | if (s->co[i] == qemu_coroutine_self()) { | |
1946 | index = i; | |
1947 | break; | |
1948 | } | |
1949 | } | |
1950 | assert(index >= 0); | |
1951 | ||
1952 | s->running_coroutines++; | |
1953 | buf = blk_blockalign(s->target, s->buf_sectors * BDRV_SECTOR_SIZE); | |
1954 | ||
1955 | while (1) { | |
1956 | int n; | |
1957 | int64_t sector_num; | |
1958 | enum ImgConvertBlockStatus status; | |
ee5306d0 | 1959 | bool copy_range; |
2d9187bc PL |
1960 | |
1961 | qemu_co_mutex_lock(&s->lock); | |
1962 | if (s->ret != -EINPROGRESS || s->sector_num >= s->total_sectors) { | |
1963 | qemu_co_mutex_unlock(&s->lock); | |
b91127ed | 1964 | break; |
2d9187bc PL |
1965 | } |
1966 | n = convert_iteration_sectors(s, s->sector_num); | |
1967 | if (n < 0) { | |
1968 | qemu_co_mutex_unlock(&s->lock); | |
1969 | s->ret = n; | |
b91127ed | 1970 | break; |
2d9187bc PL |
1971 | } |
1972 | /* save current sector and allocation status to local variables */ | |
1973 | sector_num = s->sector_num; | |
1974 | status = s->status; | |
1975 | if (!s->min_sparse && s->status == BLK_ZERO) { | |
1976 | n = MIN(n, s->buf_sectors); | |
1977 | } | |
1978 | /* increment global sector counter so that other coroutines can | |
1979 | * already continue reading beyond this request */ | |
1980 | s->sector_num += n; | |
1981 | qemu_co_mutex_unlock(&s->lock); | |
1982 | ||
1983 | if (status == BLK_DATA || (!s->min_sparse && status == BLK_ZERO)) { | |
1984 | s->allocated_done += n; | |
1985 | qemu_progress_print(100.0 * s->allocated_done / | |
1986 | s->allocated_sectors, 0); | |
1987 | } | |
1988 | ||
ee5306d0 FZ |
1989 | retry: |
1990 | copy_range = s->copy_range && s->status == BLK_DATA; | |
1991 | if (status == BLK_DATA && !copy_range) { | |
2d9187bc PL |
1992 | ret = convert_co_read(s, sector_num, n, buf); |
1993 | if (ret < 0) { | |
39f77cb6 EB |
1994 | error_report("error while reading at byte %lld: %s", |
1995 | sector_num * BDRV_SECTOR_SIZE, strerror(-ret)); | |
2d9187bc | 1996 | s->ret = ret; |
2d9187bc PL |
1997 | } |
1998 | } else if (!s->min_sparse && status == BLK_ZERO) { | |
1999 | status = BLK_DATA; | |
2000 | memset(buf, 0x00, n * BDRV_SECTOR_SIZE); | |
2001 | } | |
2002 | ||
2003 | if (s->wr_in_order) { | |
2004 | /* keep writes in order */ | |
b91127ed | 2005 | while (s->wr_offs != sector_num && s->ret == -EINPROGRESS) { |
2d9187bc PL |
2006 | s->wait_sector_num[index] = sector_num; |
2007 | qemu_coroutine_yield(); | |
2008 | } | |
2009 | s->wait_sector_num[index] = -1; | |
2010 | } | |
2011 | ||
b91127ed | 2012 | if (s->ret == -EINPROGRESS) { |
ee5306d0 FZ |
2013 | if (copy_range) { |
2014 | ret = convert_co_copy_range(s, sector_num, n); | |
2015 | if (ret) { | |
2016 | s->copy_range = false; | |
2017 | goto retry; | |
2018 | } | |
2019 | } else { | |
2020 | ret = convert_co_write(s, sector_num, n, buf, status); | |
2021 | } | |
b91127ed | 2022 | if (ret < 0) { |
39f77cb6 EB |
2023 | error_report("error while writing at byte %lld: %s", |
2024 | sector_num * BDRV_SECTOR_SIZE, strerror(-ret)); | |
b91127ed AN |
2025 | s->ret = ret; |
2026 | } | |
2d9187bc PL |
2027 | } |
2028 | ||
2029 | if (s->wr_in_order) { | |
2030 | /* reenter the coroutine that might have waited | |
2031 | * for this write to complete */ | |
2032 | s->wr_offs = sector_num + n; | |
2033 | for (i = 0; i < s->num_coroutines; i++) { | |
2034 | if (s->co[i] && s->wait_sector_num[i] == s->wr_offs) { | |
2035 | /* | |
2036 | * A -> B -> A cannot occur because A has | |
2037 | * s->wait_sector_num[i] == -1 during A -> B. Therefore | |
2038 | * B will never enter A during this time window. | |
2039 | */ | |
2040 | qemu_coroutine_enter(s->co[i]); | |
2041 | break; | |
2042 | } | |
2043 | } | |
2044 | } | |
2045 | } | |
2046 | ||
2d9187bc PL |
2047 | qemu_vfree(buf); |
2048 | s->co[index] = NULL; | |
2049 | s->running_coroutines--; | |
2050 | if (!s->running_coroutines && s->ret == -EINPROGRESS) { | |
2051 | /* the convert job finished successfully */ | |
2052 | s->ret = 0; | |
2053 | } | |
2054 | } | |
2055 | ||
2056 | static int convert_do_copy(ImgConvertState *s) | |
2057 | { | |
2058 | int ret, i, n; | |
2059 | int64_t sector_num = 0; | |
690c7301 KW |
2060 | |
2061 | /* Check whether we have zero initialisation or can get it efficiently */ | |
168468fe DE |
2062 | if (!s->has_zero_init && s->target_is_new && s->min_sparse && |
2063 | !s->target_has_backing) { | |
4d7c487e | 2064 | s->has_zero_init = bdrv_has_zero_init(blk_bs(s->target)); |
4d7c487e | 2065 | } |
690c7301 KW |
2066 | |
2067 | if (!s->has_zero_init && !s->target_has_backing && | |
2068 | bdrv_can_write_zeroes_with_unmap(blk_bs(s->target))) | |
2069 | { | |
c9fdcf20 | 2070 | ret = blk_make_zero(s->target, BDRV_REQ_MAY_UNMAP | BDRV_REQ_NO_FALLBACK); |
690c7301 KW |
2071 | if (ret == 0) { |
2072 | s->has_zero_init = true; | |
2073 | } | |
2074 | } | |
2075 | ||
2076 | /* Allocate buffer for copied data. For compressed images, only one cluster | |
2077 | * can be copied at a time. */ | |
2078 | if (s->compressed) { | |
2079 | if (s->cluster_sectors <= 0 || s->cluster_sectors > s->buf_sectors) { | |
2080 | error_report("invalid cluster size"); | |
2d9187bc | 2081 | return -EINVAL; |
690c7301 KW |
2082 | } |
2083 | s->buf_sectors = s->cluster_sectors; | |
2084 | } | |
690c7301 | 2085 | |
690c7301 KW |
2086 | while (sector_num < s->total_sectors) { |
2087 | n = convert_iteration_sectors(s, sector_num); | |
2088 | if (n < 0) { | |
2d9187bc | 2089 | return n; |
690c7301 | 2090 | } |
aad15de4 HR |
2091 | if (s->status == BLK_DATA || (!s->min_sparse && s->status == BLK_ZERO)) |
2092 | { | |
690c7301 KW |
2093 | s->allocated_sectors += n; |
2094 | } | |
2095 | sector_num += n; | |
2096 | } | |
2097 | ||
2098 | /* Do the copy */ | |
690c7301 | 2099 | s->sector_next_status = 0; |
2d9187bc | 2100 | s->ret = -EINPROGRESS; |
690c7301 | 2101 | |
2d9187bc PL |
2102 | qemu_co_mutex_init(&s->lock); |
2103 | for (i = 0; i < s->num_coroutines; i++) { | |
2104 | s->co[i] = qemu_coroutine_create(convert_co_do_copy, s); | |
2105 | s->wait_sector_num[i] = -1; | |
2106 | qemu_coroutine_enter(s->co[i]); | |
2107 | } | |
690c7301 | 2108 | |
b91127ed | 2109 | while (s->running_coroutines) { |
2d9187bc | 2110 | main_loop_wait(false); |
690c7301 KW |
2111 | } |
2112 | ||
2d9187bc | 2113 | if (s->compressed && !s->ret) { |
690c7301 | 2114 | /* signal EOF to align */ |
fe5c1355 | 2115 | ret = blk_pwrite_compressed(s->target, 0, NULL, 0); |
690c7301 | 2116 | if (ret < 0) { |
2d9187bc | 2117 | return ret; |
690c7301 KW |
2118 | } |
2119 | } | |
2120 | ||
2d9187bc | 2121 | return s->ret; |
690c7301 KW |
2122 | } |
2123 | ||
6360ab27 PL |
2124 | #define MAX_BUF_SECTORS 32768 |
2125 | ||
ea2384d3 FB |
2126 | static int img_convert(int argc, char **argv) |
2127 | { | |
9fd77f99 | 2128 | int c, bs_i, flags, src_flags = 0; |
305b4c60 | 2129 | const char *fmt = NULL, *out_fmt = NULL, *cache = "unsafe", |
9fd77f99 PL |
2130 | *src_cache = BDRV_DEFAULT_CACHE, *out_baseimg = NULL, |
2131 | *out_filename, *out_baseimg_param, *snapshot_name = NULL; | |
305b4c60 | 2132 | BlockDriver *drv = NULL, *proto_drv = NULL; |
faea38e7 | 2133 | BlockDriverInfo bdi; |
9fd77f99 PL |
2134 | BlockDriverState *out_bs; |
2135 | QemuOpts *opts = NULL, *sn_opts = NULL; | |
83d0521a | 2136 | QemuOptsList *create_opts = NULL; |
8d65a3cc | 2137 | QDict *open_opts = NULL; |
efa84d43 | 2138 | char *options = NULL; |
cc84d90f | 2139 | Error *local_err = NULL; |
3d96cb91 | 2140 | bool writethrough, src_writethrough, image_opts = false, |
305b4c60 | 2141 | skip_create = false, progress = false, tgt_image_opts = false; |
9fd77f99 | 2142 | int64_t ret = -EINVAL; |
335e9937 | 2143 | bool force_share = false; |
e11ce12f | 2144 | bool explict_min_sparse = false; |
9fd77f99 PL |
2145 | |
2146 | ImgConvertState s = (ImgConvertState) { | |
2147 | /* Need at least 4k of zeros for sparse detection */ | |
2148 | .min_sparse = 8, | |
e11ce12f | 2149 | .copy_range = false, |
9fd77f99 PL |
2150 | .buf_sectors = IO_BUF_SIZE / BDRV_SECTOR_SIZE, |
2151 | .wr_in_order = true, | |
2152 | .num_coroutines = 8, | |
2153 | }; | |
ea2384d3 | 2154 | |
ea2384d3 | 2155 | for(;;) { |
3babeb15 DB |
2156 | static const struct option long_options[] = { |
2157 | {"help", no_argument, 0, 'h'}, | |
2158 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 2159 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
335e9937 | 2160 | {"force-share", no_argument, 0, 'U'}, |
305b4c60 | 2161 | {"target-image-opts", no_argument, 0, OPTION_TARGET_IMAGE_OPTS}, |
8eaac025 | 2162 | {"salvage", no_argument, 0, OPTION_SALVAGE}, |
168468fe | 2163 | {"target-is-zero", no_argument, 0, OPTION_TARGET_IS_ZERO}, |
3babeb15 DB |
2164 | {0, 0, 0, 0} |
2165 | }; | |
e11ce12f | 2166 | c = getopt_long(argc, argv, ":hf:O:B:Cco:l:S:pt:T:qnm:WU", |
3babeb15 | 2167 | long_options, NULL); |
b8fb60da | 2168 | if (c == -1) { |
ea2384d3 | 2169 | break; |
b8fb60da | 2170 | } |
ea2384d3 | 2171 | switch(c) { |
c9192973 SH |
2172 | case ':': |
2173 | missing_argument(argv[optind - 1]); | |
2174 | break; | |
ef87394c | 2175 | case '?': |
c9192973 SH |
2176 | unrecognized_option(argv[optind - 1]); |
2177 | break; | |
ea2384d3 FB |
2178 | case 'h': |
2179 | help(); | |
2180 | break; | |
2181 | case 'f': | |
2182 | fmt = optarg; | |
2183 | break; | |
2184 | case 'O': | |
2185 | out_fmt = optarg; | |
2186 | break; | |
f58c7b35 TS |
2187 | case 'B': |
2188 | out_baseimg = optarg; | |
2189 | break; | |
e11ce12f FZ |
2190 | case 'C': |
2191 | s.copy_range = true; | |
2192 | break; | |
ea2384d3 | 2193 | case 'c': |
9fd77f99 | 2194 | s.compressed = true; |
ea2384d3 | 2195 | break; |
efa84d43 | 2196 | case 'o': |
6d2b5cba | 2197 | if (accumulate_options(&options, optarg) < 0) { |
64bb01aa | 2198 | goto fail_getopt; |
2dc8328b | 2199 | } |
efa84d43 | 2200 | break; |
ef80654d WX |
2201 | case 'l': |
2202 | if (strstart(optarg, SNAPSHOT_OPT_BASE, NULL)) { | |
70b94331 MA |
2203 | sn_opts = qemu_opts_parse_noisily(&internal_snapshot_opts, |
2204 | optarg, false); | |
ef80654d WX |
2205 | if (!sn_opts) { |
2206 | error_report("Failed in parsing snapshot param '%s'", | |
2207 | optarg); | |
64bb01aa | 2208 | goto fail_getopt; |
ef80654d WX |
2209 | } |
2210 | } else { | |
2211 | snapshot_name = optarg; | |
2212 | } | |
2213 | break; | |
a22f123c KW |
2214 | case 'S': |
2215 | { | |
2216 | int64_t sval; | |
606caa0a | 2217 | |
43d589b0 EM |
2218 | sval = cvtnum("buffer size for sparse output", optarg); |
2219 | if (sval < 0) { | |
2220 | goto fail_getopt; | |
2221 | } else if (!QEMU_IS_ALIGNED(sval, BDRV_SECTOR_SIZE) || | |
6360ab27 PL |
2222 | sval / BDRV_SECTOR_SIZE > MAX_BUF_SECTORS) { |
2223 | error_report("Invalid buffer size for sparse output specified. " | |
2224 | "Valid sizes are multiples of %llu up to %llu. Select " | |
2225 | "0 to disable sparse detection (fully allocates output).", | |
2226 | BDRV_SECTOR_SIZE, MAX_BUF_SECTORS * BDRV_SECTOR_SIZE); | |
64bb01aa | 2227 | goto fail_getopt; |
a22f123c KW |
2228 | } |
2229 | ||
9fd77f99 | 2230 | s.min_sparse = sval / BDRV_SECTOR_SIZE; |
e11ce12f | 2231 | explict_min_sparse = true; |
a22f123c KW |
2232 | break; |
2233 | } | |
6b837bc4 | 2234 | case 'p': |
9fd77f99 | 2235 | progress = true; |
6b837bc4 | 2236 | break; |
661a0f71 FS |
2237 | case 't': |
2238 | cache = optarg; | |
2239 | break; | |
40055951 HR |
2240 | case 'T': |
2241 | src_cache = optarg; | |
2242 | break; | |
f382d43a | 2243 | case 'q': |
3d96cb91 | 2244 | s.quiet = true; |
f382d43a | 2245 | break; |
b2e10493 | 2246 | case 'n': |
9fd77f99 | 2247 | skip_create = true; |
b2e10493 | 2248 | break; |
2d9187bc | 2249 | case 'm': |
9fd77f99 PL |
2250 | if (qemu_strtol(optarg, NULL, 0, &s.num_coroutines) || |
2251 | s.num_coroutines < 1 || s.num_coroutines > MAX_COROUTINES) { | |
2d9187bc PL |
2252 | error_report("Invalid number of coroutines. Allowed number of" |
2253 | " coroutines is between 1 and %d", MAX_COROUTINES); | |
2d9187bc PL |
2254 | goto fail_getopt; |
2255 | } | |
2256 | break; | |
2257 | case 'W': | |
9fd77f99 | 2258 | s.wr_in_order = false; |
2d9187bc | 2259 | break; |
335e9937 FZ |
2260 | case 'U': |
2261 | force_share = true; | |
2262 | break; | |
3258b911 HR |
2263 | case OPTION_OBJECT: { |
2264 | QemuOpts *object_opts; | |
2265 | object_opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
2266 | optarg, true); | |
2267 | if (!object_opts) { | |
3babeb15 DB |
2268 | goto fail_getopt; |
2269 | } | |
2270 | break; | |
3258b911 | 2271 | } |
eb769f74 DB |
2272 | case OPTION_IMAGE_OPTS: |
2273 | image_opts = true; | |
2274 | break; | |
8eaac025 HR |
2275 | case OPTION_SALVAGE: |
2276 | s.salvage = true; | |
2277 | break; | |
305b4c60 DB |
2278 | case OPTION_TARGET_IMAGE_OPTS: |
2279 | tgt_image_opts = true; | |
2280 | break; | |
168468fe DE |
2281 | case OPTION_TARGET_IS_ZERO: |
2282 | /* | |
2283 | * The user asserting that the target is blank has the | |
2284 | * same effect as the target driver supporting zero | |
2285 | * initialisation. | |
2286 | */ | |
2287 | s.has_zero_init = true; | |
2288 | break; | |
ea2384d3 FB |
2289 | } |
2290 | } | |
3b46e624 | 2291 | |
305b4c60 DB |
2292 | if (!out_fmt && !tgt_image_opts) { |
2293 | out_fmt = "raw"; | |
2294 | } | |
2295 | ||
3babeb15 DB |
2296 | if (qemu_opts_foreach(&qemu_object_opts, |
2297 | user_creatable_add_opts_foreach, | |
c6e5cdfd | 2298 | qemu_img_object_print_help, &error_fatal)) { |
3babeb15 DB |
2299 | goto fail_getopt; |
2300 | } | |
2301 | ||
e11ce12f FZ |
2302 | if (s.compressed && s.copy_range) { |
2303 | error_report("Cannot enable copy offloading when -c is used"); | |
2304 | goto fail_getopt; | |
2305 | } | |
2306 | ||
2307 | if (explict_min_sparse && s.copy_range) { | |
2308 | error_report("Cannot enable copy offloading when -S is used"); | |
2309 | goto fail_getopt; | |
2310 | } | |
2311 | ||
8eaac025 HR |
2312 | if (s.copy_range && s.salvage) { |
2313 | error_report("Cannot use copy offloading in salvaging mode"); | |
2314 | goto fail_getopt; | |
2315 | } | |
2316 | ||
305b4c60 DB |
2317 | if (tgt_image_opts && !skip_create) { |
2318 | error_report("--target-image-opts requires use of -n flag"); | |
2319 | goto fail_getopt; | |
2320 | } | |
2321 | ||
ffd8e8ff KW |
2322 | if (skip_create && options) { |
2323 | warn_report("-o has no effect when skipping image creation"); | |
2324 | warn_report("This will become an error in future QEMU versions."); | |
2325 | } | |
2326 | ||
168468fe DE |
2327 | if (s.has_zero_init && !skip_create) { |
2328 | error_report("--target-is-zero requires use of -n flag"); | |
2329 | goto fail_getopt; | |
2330 | } | |
2331 | ||
9fd77f99 PL |
2332 | s.src_num = argc - optind - 1; |
2333 | out_filename = s.src_num >= 1 ? argv[argc - 1] : NULL; | |
f58c7b35 | 2334 | |
2dc8328b | 2335 | if (options && has_help_option(options)) { |
305b4c60 DB |
2336 | if (out_fmt) { |
2337 | ret = print_block_option_help(out_filename, out_fmt); | |
2338 | goto fail_getopt; | |
2339 | } else { | |
2340 | error_report("Option help requires a format be specified"); | |
2341 | goto fail_getopt; | |
2342 | } | |
4ac8aacd JS |
2343 | } |
2344 | ||
9fd77f99 PL |
2345 | if (s.src_num < 1) { |
2346 | error_report("Must specify image file name"); | |
2347 | goto fail_getopt; | |
a283cb6e KW |
2348 | } |
2349 | ||
2350 | ||
9fd77f99 | 2351 | /* ret is still -EINVAL until here */ |
ce099547 | 2352 | ret = bdrv_parse_cache_mode(src_cache, &src_flags, &src_writethrough); |
40055951 HR |
2353 | if (ret < 0) { |
2354 | error_report("Invalid source cache option: %s", src_cache); | |
9fd77f99 | 2355 | goto fail_getopt; |
40055951 HR |
2356 | } |
2357 | ||
9fd77f99 | 2358 | /* Initialize before goto out */ |
3d96cb91 | 2359 | if (s.quiet) { |
9fd77f99 PL |
2360 | progress = false; |
2361 | } | |
2362 | qemu_progress_init(progress, 1.0); | |
6b837bc4 JS |
2363 | qemu_progress_print(0, 100); |
2364 | ||
9fd77f99 PL |
2365 | s.src = g_new0(BlockBackend *, s.src_num); |
2366 | s.src_sectors = g_new(int64_t, s.src_num); | |
926c2d23 | 2367 | |
9fd77f99 PL |
2368 | for (bs_i = 0; bs_i < s.src_num; bs_i++) { |
2369 | s.src[bs_i] = img_open(image_opts, argv[optind + bs_i], | |
3d96cb91 | 2370 | fmt, src_flags, src_writethrough, s.quiet, |
335e9937 | 2371 | force_share); |
9fd77f99 | 2372 | if (!s.src[bs_i]) { |
c2abccec MK |
2373 | ret = -1; |
2374 | goto out; | |
2375 | } | |
9fd77f99 PL |
2376 | s.src_sectors[bs_i] = blk_nb_sectors(s.src[bs_i]); |
2377 | if (s.src_sectors[bs_i] < 0) { | |
52bf1e72 | 2378 | error_report("Could not get size of %s: %s", |
9fd77f99 | 2379 | argv[optind + bs_i], strerror(-s.src_sectors[bs_i])); |
52bf1e72 MA |
2380 | ret = -1; |
2381 | goto out; | |
2382 | } | |
9fd77f99 | 2383 | s.total_sectors += s.src_sectors[bs_i]; |
926c2d23 | 2384 | } |
ea2384d3 | 2385 | |
ef80654d | 2386 | if (sn_opts) { |
9fd77f99 | 2387 | bdrv_snapshot_load_tmp(blk_bs(s.src[0]), |
10d6eda1 PM |
2388 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_ID), |
2389 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_NAME), | |
2390 | &local_err); | |
ef80654d | 2391 | } else if (snapshot_name != NULL) { |
9fd77f99 | 2392 | if (s.src_num > 1) { |
6daf194d | 2393 | error_report("No support for concatenating multiple snapshot"); |
51ef6727 | 2394 | ret = -1; |
2395 | goto out; | |
2396 | } | |
7b4c4781 | 2397 | |
9fd77f99 PL |
2398 | bdrv_snapshot_load_tmp_by_id_or_name(blk_bs(s.src[0]), snapshot_name, |
2399 | &local_err); | |
ef80654d | 2400 | } |
84d18f06 | 2401 | if (local_err) { |
c29b77f9 | 2402 | error_reportf_err(local_err, "Failed to load snapshot: "); |
ef80654d WX |
2403 | ret = -1; |
2404 | goto out; | |
51ef6727 | 2405 | } |
2406 | ||
305b4c60 DB |
2407 | if (!skip_create) { |
2408 | /* Find driver and parse its options */ | |
2409 | drv = bdrv_find_format(out_fmt); | |
2410 | if (!drv) { | |
2411 | error_report("Unknown file format '%s'", out_fmt); | |
2412 | ret = -1; | |
2413 | goto out; | |
2414 | } | |
efa84d43 | 2415 | |
305b4c60 DB |
2416 | proto_drv = bdrv_find_protocol(out_filename, true, &local_err); |
2417 | if (!proto_drv) { | |
2418 | error_report_err(local_err); | |
2419 | ret = -1; | |
2420 | goto out; | |
2421 | } | |
b50cbabc | 2422 | |
2e024cde HR |
2423 | if (!drv->create_opts) { |
2424 | error_report("Format driver '%s' does not support image creation", | |
2425 | drv->format_name); | |
2426 | ret = -1; | |
2427 | goto out; | |
2428 | } | |
f75613cf | 2429 | |
2e024cde HR |
2430 | if (!proto_drv->create_opts) { |
2431 | error_report("Protocol driver '%s' does not support image creation", | |
2432 | proto_drv->format_name); | |
2433 | ret = -1; | |
2434 | goto out; | |
2435 | } | |
f75613cf | 2436 | |
2e024cde HR |
2437 | create_opts = qemu_opts_append(create_opts, drv->create_opts); |
2438 | create_opts = qemu_opts_append(create_opts, proto_drv->create_opts); | |
db08adf5 | 2439 | |
2e024cde | 2440 | opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); |
dc523cd3 MA |
2441 | if (options) { |
2442 | qemu_opts_do_parse(opts, options, NULL, &local_err); | |
2443 | if (local_err) { | |
97a2ca7a | 2444 | error_report_err(local_err); |
dc523cd3 MA |
2445 | ret = -1; |
2446 | goto out; | |
2447 | } | |
2e024cde | 2448 | } |
efa84d43 | 2449 | |
9fd77f99 | 2450 | qemu_opt_set_number(opts, BLOCK_OPT_SIZE, s.total_sectors * 512, |
39101f25 | 2451 | &error_abort); |
2e024cde HR |
2452 | ret = add_old_style_options(out_fmt, opts, out_baseimg, NULL); |
2453 | if (ret < 0) { | |
2454 | goto out; | |
2455 | } | |
c2abccec | 2456 | } |
efa84d43 | 2457 | |
a18953fb | 2458 | /* Get backing file name if -o backing_file was used */ |
83d0521a | 2459 | out_baseimg_param = qemu_opt_get(opts, BLOCK_OPT_BACKING_FILE); |
a18953fb | 2460 | if (out_baseimg_param) { |
83d0521a | 2461 | out_baseimg = out_baseimg_param; |
a18953fb | 2462 | } |
9fd77f99 | 2463 | s.target_has_backing = (bool) out_baseimg; |
a18953fb | 2464 | |
168468fe DE |
2465 | if (s.has_zero_init && s.target_has_backing) { |
2466 | error_report("Cannot use --target-is-zero when the destination " | |
2467 | "image has a backing file"); | |
2468 | goto out; | |
2469 | } | |
2470 | ||
48758a84 HR |
2471 | if (s.src_num > 1 && out_baseimg) { |
2472 | error_report("Having a backing file for the target makes no sense when " | |
2473 | "concatenating multiple input images"); | |
2474 | ret = -1; | |
2475 | goto out; | |
2476 | } | |
2477 | ||
efa84d43 | 2478 | /* Check if compression is supported */ |
9fd77f99 | 2479 | if (s.compressed) { |
83d0521a CL |
2480 | bool encryption = |
2481 | qemu_opt_get_bool(opts, BLOCK_OPT_ENCRYPT, false); | |
0cb8d47b DB |
2482 | const char *encryptfmt = |
2483 | qemu_opt_get(opts, BLOCK_OPT_ENCRYPT_FORMAT); | |
83d0521a CL |
2484 | const char *preallocation = |
2485 | qemu_opt_get(opts, BLOCK_OPT_PREALLOC); | |
efa84d43 | 2486 | |
ac850bf0 | 2487 | if (drv && !block_driver_can_compress(drv)) { |
15654a6d | 2488 | error_report("Compression not supported for this file format"); |
c2abccec MK |
2489 | ret = -1; |
2490 | goto out; | |
efa84d43 KW |
2491 | } |
2492 | ||
0cb8d47b | 2493 | if (encryption || encryptfmt) { |
15654a6d JS |
2494 | error_report("Compression and encryption not supported at " |
2495 | "the same time"); | |
c2abccec MK |
2496 | ret = -1; |
2497 | goto out; | |
efa84d43 | 2498 | } |
41521fa4 | 2499 | |
83d0521a CL |
2500 | if (preallocation |
2501 | && strcmp(preallocation, "off")) | |
41521fa4 KW |
2502 | { |
2503 | error_report("Compression and preallocation not supported at " | |
2504 | "the same time"); | |
2505 | ret = -1; | |
2506 | goto out; | |
2507 | } | |
efa84d43 KW |
2508 | } |
2509 | ||
8d65a3cc DB |
2510 | /* |
2511 | * The later open call will need any decryption secrets, and | |
2512 | * bdrv_create() will purge "opts", so extract them now before | |
2513 | * they are lost. | |
2514 | */ | |
2515 | if (!skip_create) { | |
2516 | open_opts = qdict_new(); | |
2517 | qemu_opt_foreach(opts, img_add_key_secrets, open_opts, &error_abort); | |
2518 | } | |
2519 | ||
b2e10493 AD |
2520 | if (!skip_create) { |
2521 | /* Create the new image */ | |
c282e1fd | 2522 | ret = bdrv_create(drv, out_filename, opts, &local_err); |
b2e10493 | 2523 | if (ret < 0) { |
c29b77f9 MA |
2524 | error_reportf_err(local_err, "%s: error while converting %s: ", |
2525 | out_filename, out_fmt); | |
b2e10493 | 2526 | goto out; |
ea2384d3 FB |
2527 | } |
2528 | } | |
3b46e624 | 2529 | |
4d7c487e HR |
2530 | s.target_is_new = !skip_create; |
2531 | ||
9fd77f99 | 2532 | flags = s.min_sparse ? (BDRV_O_RDWR | BDRV_O_UNMAP) : BDRV_O_RDWR; |
ce099547 | 2533 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); |
661a0f71 FS |
2534 | if (ret < 0) { |
2535 | error_report("Invalid cache option: %s", cache); | |
bb9cd2ee | 2536 | goto out; |
661a0f71 FS |
2537 | } |
2538 | ||
305b4c60 DB |
2539 | if (skip_create) { |
2540 | s.target = img_open(tgt_image_opts, out_filename, out_fmt, | |
3d96cb91 | 2541 | flags, writethrough, s.quiet, false); |
305b4c60 DB |
2542 | } else { |
2543 | /* TODO ultimately we should allow --target-image-opts | |
2544 | * to be used even when -n is not given. | |
2545 | * That has to wait for bdrv_create to be improved | |
2546 | * to allow filenames in option syntax | |
2547 | */ | |
8d65a3cc | 2548 | s.target = img_open_file(out_filename, open_opts, out_fmt, |
3d96cb91 | 2549 | flags, writethrough, s.quiet, false); |
8d65a3cc | 2550 | open_opts = NULL; /* blk_new_open will have freed it */ |
305b4c60 | 2551 | } |
9fd77f99 | 2552 | if (!s.target) { |
c2abccec MK |
2553 | ret = -1; |
2554 | goto out; | |
2555 | } | |
9fd77f99 | 2556 | out_bs = blk_bs(s.target); |
ea2384d3 | 2557 | |
ac850bf0 | 2558 | if (s.compressed && !block_driver_can_compress(out_bs->drv)) { |
305b4c60 DB |
2559 | error_report("Compression not supported for this file format"); |
2560 | ret = -1; | |
2561 | goto out; | |
2562 | } | |
2563 | ||
5def6b80 | 2564 | /* increase bufsectors from the default 4096 (2M) if opt_transfer |
6360ab27 PL |
2565 | * or discard_alignment of the out_bs is greater. Limit to |
2566 | * MAX_BUF_SECTORS as maximum which is currently 32768 (16MB). */ | |
2567 | s.buf_sectors = MIN(MAX_BUF_SECTORS, | |
9fd77f99 PL |
2568 | MAX(s.buf_sectors, |
2569 | MAX(out_bs->bl.opt_transfer >> BDRV_SECTOR_BITS, | |
2570 | out_bs->bl.pdiscard_alignment >> | |
2571 | BDRV_SECTOR_BITS))); | |
f2521c90 | 2572 | |
8dcd3c9b PL |
2573 | /* try to align the write requests to the destination to avoid unnecessary |
2574 | * RMW cycles. */ | |
2575 | s.alignment = MAX(pow2floor(s.min_sparse), | |
2576 | DIV_ROUND_UP(out_bs->bl.request_alignment, | |
2577 | BDRV_SECTOR_SIZE)); | |
2578 | assert(is_power_of_2(s.alignment)); | |
2579 | ||
b2e10493 | 2580 | if (skip_create) { |
9fd77f99 | 2581 | int64_t output_sectors = blk_nb_sectors(s.target); |
43716fa8 | 2582 | if (output_sectors < 0) { |
eec5eb42 | 2583 | error_report("unable to get output image length: %s", |
43716fa8 | 2584 | strerror(-output_sectors)); |
b2e10493 AD |
2585 | ret = -1; |
2586 | goto out; | |
9fd77f99 | 2587 | } else if (output_sectors < s.total_sectors) { |
b2e10493 AD |
2588 | error_report("output file is smaller than input file"); |
2589 | ret = -1; | |
2590 | goto out; | |
2591 | } | |
2592 | } | |
2593 | ||
c69291e7 | 2594 | if (s.target_has_backing && s.target_is_new) { |
351c8eff HR |
2595 | /* Errors are treated as "backing length unknown" (which means |
2596 | * s.target_backing_sectors has to be negative, which it will | |
2597 | * be automatically). The backing file length is used only | |
2598 | * for optimizations, so such a case is not fatal. */ | |
2599 | s.target_backing_sectors = bdrv_nb_sectors(out_bs->backing->bs); | |
2600 | } else { | |
2601 | s.target_backing_sectors = -1; | |
2602 | } | |
2603 | ||
24f833cd PL |
2604 | ret = bdrv_get_info(out_bs, &bdi); |
2605 | if (ret < 0) { | |
9fd77f99 | 2606 | if (s.compressed) { |
15654a6d | 2607 | error_report("could not get block driver info"); |
c2abccec MK |
2608 | goto out; |
2609 | } | |
24f833cd | 2610 | } else { |
9fd77f99 PL |
2611 | s.compressed = s.compressed || bdi.needs_compressed_writes; |
2612 | s.cluster_sectors = bdi.cluster_size / BDRV_SECTOR_SIZE; | |
351c8eff | 2613 | s.unallocated_blocks_are_zero = bdi.unallocated_blocks_are_zero; |
9fd77f99 | 2614 | } |
802c3d4c | 2615 | |
9fd77f99 | 2616 | ret = convert_do_copy(&s); |
c2abccec | 2617 | out: |
13c28af8 PL |
2618 | if (!ret) { |
2619 | qemu_progress_print(100, 0); | |
2620 | } | |
6b837bc4 | 2621 | qemu_progress_end(); |
83d0521a CL |
2622 | qemu_opts_del(opts); |
2623 | qemu_opts_free(create_opts); | |
fbf28a43 | 2624 | qemu_opts_del(sn_opts); |
8d65a3cc | 2625 | qobject_unref(open_opts); |
9fd77f99 PL |
2626 | blk_unref(s.target); |
2627 | if (s.src) { | |
2628 | for (bs_i = 0; bs_i < s.src_num; bs_i++) { | |
2629 | blk_unref(s.src[bs_i]); | |
26f54e9a | 2630 | } |
9fd77f99 | 2631 | g_free(s.src); |
26f54e9a | 2632 | } |
9fd77f99 | 2633 | g_free(s.src_sectors); |
64bb01aa KW |
2634 | fail_getopt: |
2635 | g_free(options); | |
2636 | ||
9fd77f99 | 2637 | return !!ret; |
ea2384d3 FB |
2638 | } |
2639 | ||
57d1a2b6 | 2640 | |
faea38e7 FB |
2641 | static void dump_snapshots(BlockDriverState *bs) |
2642 | { | |
2643 | QEMUSnapshotInfo *sn_tab, *sn; | |
2644 | int nb_sns, i; | |
faea38e7 FB |
2645 | |
2646 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
2647 | if (nb_sns <= 0) | |
2648 | return; | |
2649 | printf("Snapshot list:\n"); | |
e1ce7d74 | 2650 | bdrv_snapshot_dump(NULL); |
5b917044 | 2651 | printf("\n"); |
faea38e7 FB |
2652 | for(i = 0; i < nb_sns; i++) { |
2653 | sn = &sn_tab[i]; | |
e1ce7d74 | 2654 | bdrv_snapshot_dump(sn); |
5b917044 | 2655 | printf("\n"); |
faea38e7 | 2656 | } |
7267c094 | 2657 | g_free(sn_tab); |
faea38e7 FB |
2658 | } |
2659 | ||
9699bf0d SH |
2660 | static void dump_json_image_info_list(ImageInfoList *list) |
2661 | { | |
9699bf0d | 2662 | QString *str; |
9699bf0d | 2663 | QObject *obj; |
7d5e199a | 2664 | Visitor *v = qobject_output_visitor_new(&obj); |
3b098d56 EB |
2665 | |
2666 | visit_type_ImageInfoList(v, NULL, &list, &error_abort); | |
2667 | visit_complete(v, &obj); | |
9699bf0d SH |
2668 | str = qobject_to_json_pretty(obj); |
2669 | assert(str != NULL); | |
2670 | printf("%s\n", qstring_get_str(str)); | |
cb3e7f08 | 2671 | qobject_unref(obj); |
3b098d56 | 2672 | visit_free(v); |
cb3e7f08 | 2673 | qobject_unref(str); |
9699bf0d SH |
2674 | } |
2675 | ||
c054b3fd BC |
2676 | static void dump_json_image_info(ImageInfo *info) |
2677 | { | |
c054b3fd | 2678 | QString *str; |
c054b3fd | 2679 | QObject *obj; |
7d5e199a | 2680 | Visitor *v = qobject_output_visitor_new(&obj); |
3b098d56 EB |
2681 | |
2682 | visit_type_ImageInfo(v, NULL, &info, &error_abort); | |
2683 | visit_complete(v, &obj); | |
c054b3fd BC |
2684 | str = qobject_to_json_pretty(obj); |
2685 | assert(str != NULL); | |
2686 | printf("%s\n", qstring_get_str(str)); | |
cb3e7f08 | 2687 | qobject_unref(obj); |
3b098d56 | 2688 | visit_free(v); |
cb3e7f08 | 2689 | qobject_unref(str); |
c054b3fd BC |
2690 | } |
2691 | ||
9699bf0d SH |
2692 | static void dump_human_image_info_list(ImageInfoList *list) |
2693 | { | |
2694 | ImageInfoList *elem; | |
2695 | bool delim = false; | |
2696 | ||
2697 | for (elem = list; elem; elem = elem->next) { | |
2698 | if (delim) { | |
2699 | printf("\n"); | |
2700 | } | |
2701 | delim = true; | |
2702 | ||
e1ce7d74 | 2703 | bdrv_image_info_dump(elem->value); |
9699bf0d SH |
2704 | } |
2705 | } | |
2706 | ||
2707 | static gboolean str_equal_func(gconstpointer a, gconstpointer b) | |
2708 | { | |
2709 | return strcmp(a, b) == 0; | |
2710 | } | |
2711 | ||
2712 | /** | |
2713 | * Open an image file chain and return an ImageInfoList | |
2714 | * | |
2715 | * @filename: topmost image filename | |
2716 | * @fmt: topmost image format (may be NULL to autodetect) | |
2717 | * @chain: true - enumerate entire backing file chain | |
2718 | * false - only topmost image file | |
2719 | * | |
2720 | * Returns a list of ImageInfo objects or NULL if there was an error opening an | |
2721 | * image file. If there was an error a message will have been printed to | |
2722 | * stderr. | |
2723 | */ | |
eb769f74 DB |
2724 | static ImageInfoList *collect_image_info_list(bool image_opts, |
2725 | const char *filename, | |
9699bf0d | 2726 | const char *fmt, |
335e9937 | 2727 | bool chain, bool force_share) |
9699bf0d SH |
2728 | { |
2729 | ImageInfoList *head = NULL; | |
2730 | ImageInfoList **last = &head; | |
2731 | GHashTable *filenames; | |
43526ec8 | 2732 | Error *err = NULL; |
9699bf0d SH |
2733 | |
2734 | filenames = g_hash_table_new_full(g_str_hash, str_equal_func, NULL, NULL); | |
2735 | ||
2736 | while (filename) { | |
26f54e9a | 2737 | BlockBackend *blk; |
9699bf0d SH |
2738 | BlockDriverState *bs; |
2739 | ImageInfo *info; | |
2740 | ImageInfoList *elem; | |
2741 | ||
2742 | if (g_hash_table_lookup_extended(filenames, filename, NULL, NULL)) { | |
2743 | error_report("Backing file '%s' creates an infinite loop.", | |
2744 | filename); | |
2745 | goto err; | |
2746 | } | |
2747 | g_hash_table_insert(filenames, (gpointer)filename, NULL); | |
2748 | ||
efaa7c4e | 2749 | blk = img_open(image_opts, filename, fmt, |
335e9937 FZ |
2750 | BDRV_O_NO_BACKING | BDRV_O_NO_IO, false, false, |
2751 | force_share); | |
7e7d56d9 | 2752 | if (!blk) { |
9699bf0d SH |
2753 | goto err; |
2754 | } | |
7e7d56d9 | 2755 | bs = blk_bs(blk); |
9699bf0d | 2756 | |
43526ec8 | 2757 | bdrv_query_image_info(bs, &info, &err); |
84d18f06 | 2758 | if (err) { |
565f65d2 | 2759 | error_report_err(err); |
26f54e9a | 2760 | blk_unref(blk); |
43526ec8 | 2761 | goto err; |
fb0ed453 | 2762 | } |
9699bf0d SH |
2763 | |
2764 | elem = g_new0(ImageInfoList, 1); | |
2765 | elem->value = info; | |
2766 | *last = elem; | |
2767 | last = &elem->next; | |
2768 | ||
26f54e9a | 2769 | blk_unref(blk); |
9699bf0d | 2770 | |
0da7d13a | 2771 | /* Clear parameters that only apply to the topmost image */ |
9699bf0d | 2772 | filename = fmt = NULL; |
0da7d13a SH |
2773 | image_opts = false; |
2774 | ||
9699bf0d SH |
2775 | if (chain) { |
2776 | if (info->has_full_backing_filename) { | |
2777 | filename = info->full_backing_filename; | |
2778 | } else if (info->has_backing_filename) { | |
92d617ab JS |
2779 | error_report("Could not determine absolute backing filename," |
2780 | " but backing filename '%s' present", | |
2781 | info->backing_filename); | |
2782 | goto err; | |
9699bf0d SH |
2783 | } |
2784 | if (info->has_backing_filename_format) { | |
2785 | fmt = info->backing_filename_format; | |
2786 | } | |
2787 | } | |
2788 | } | |
2789 | g_hash_table_destroy(filenames); | |
2790 | return head; | |
2791 | ||
2792 | err: | |
2793 | qapi_free_ImageInfoList(head); | |
2794 | g_hash_table_destroy(filenames); | |
2795 | return NULL; | |
2796 | } | |
2797 | ||
c054b3fd BC |
2798 | static int img_info(int argc, char **argv) |
2799 | { | |
2800 | int c; | |
2801 | OutputFormat output_format = OFORMAT_HUMAN; | |
9699bf0d | 2802 | bool chain = false; |
c054b3fd | 2803 | const char *filename, *fmt, *output; |
9699bf0d | 2804 | ImageInfoList *list; |
eb769f74 | 2805 | bool image_opts = false; |
335e9937 | 2806 | bool force_share = false; |
c054b3fd | 2807 | |
ea2384d3 | 2808 | fmt = NULL; |
c054b3fd | 2809 | output = NULL; |
ea2384d3 | 2810 | for(;;) { |
c054b3fd BC |
2811 | int option_index = 0; |
2812 | static const struct option long_options[] = { | |
2813 | {"help", no_argument, 0, 'h'}, | |
2814 | {"format", required_argument, 0, 'f'}, | |
2815 | {"output", required_argument, 0, OPTION_OUTPUT}, | |
9699bf0d | 2816 | {"backing-chain", no_argument, 0, OPTION_BACKING_CHAIN}, |
3babeb15 | 2817 | {"object", required_argument, 0, OPTION_OBJECT}, |
eb769f74 | 2818 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
335e9937 | 2819 | {"force-share", no_argument, 0, 'U'}, |
c054b3fd BC |
2820 | {0, 0, 0, 0} |
2821 | }; | |
335e9937 | 2822 | c = getopt_long(argc, argv, ":f:hU", |
c054b3fd | 2823 | long_options, &option_index); |
b8fb60da | 2824 | if (c == -1) { |
ea2384d3 | 2825 | break; |
b8fb60da | 2826 | } |
ea2384d3 | 2827 | switch(c) { |
c9192973 SH |
2828 | case ':': |
2829 | missing_argument(argv[optind - 1]); | |
2830 | break; | |
ef87394c | 2831 | case '?': |
c9192973 SH |
2832 | unrecognized_option(argv[optind - 1]); |
2833 | break; | |
ea2384d3 FB |
2834 | case 'h': |
2835 | help(); | |
2836 | break; | |
2837 | case 'f': | |
2838 | fmt = optarg; | |
2839 | break; | |
335e9937 FZ |
2840 | case 'U': |
2841 | force_share = true; | |
2842 | break; | |
c054b3fd BC |
2843 | case OPTION_OUTPUT: |
2844 | output = optarg; | |
2845 | break; | |
9699bf0d SH |
2846 | case OPTION_BACKING_CHAIN: |
2847 | chain = true; | |
2848 | break; | |
3babeb15 DB |
2849 | case OPTION_OBJECT: { |
2850 | QemuOpts *opts; | |
2851 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
2852 | optarg, true); | |
2853 | if (!opts) { | |
2854 | return 1; | |
2855 | } | |
2856 | } break; | |
eb769f74 DB |
2857 | case OPTION_IMAGE_OPTS: |
2858 | image_opts = true; | |
2859 | break; | |
ea2384d3 FB |
2860 | } |
2861 | } | |
fc11eb26 | 2862 | if (optind != argc - 1) { |
ac1307ab | 2863 | error_exit("Expecting one image file name"); |
b8fb60da | 2864 | } |
ea2384d3 FB |
2865 | filename = argv[optind++]; |
2866 | ||
c054b3fd BC |
2867 | if (output && !strcmp(output, "json")) { |
2868 | output_format = OFORMAT_JSON; | |
2869 | } else if (output && !strcmp(output, "human")) { | |
2870 | output_format = OFORMAT_HUMAN; | |
2871 | } else if (output) { | |
2872 | error_report("--output must be used with human or json as argument."); | |
c2abccec MK |
2873 | return 1; |
2874 | } | |
c054b3fd | 2875 | |
3babeb15 DB |
2876 | if (qemu_opts_foreach(&qemu_object_opts, |
2877 | user_creatable_add_opts_foreach, | |
c6e5cdfd | 2878 | qemu_img_object_print_help, &error_fatal)) { |
3babeb15 DB |
2879 | return 1; |
2880 | } | |
2881 | ||
335e9937 FZ |
2882 | list = collect_image_info_list(image_opts, filename, fmt, chain, |
2883 | force_share); | |
9699bf0d | 2884 | if (!list) { |
c2abccec | 2885 | return 1; |
faea38e7 | 2886 | } |
c054b3fd | 2887 | |
c054b3fd BC |
2888 | switch (output_format) { |
2889 | case OFORMAT_HUMAN: | |
9699bf0d | 2890 | dump_human_image_info_list(list); |
c054b3fd BC |
2891 | break; |
2892 | case OFORMAT_JSON: | |
9699bf0d SH |
2893 | if (chain) { |
2894 | dump_json_image_info_list(list); | |
2895 | } else { | |
2896 | dump_json_image_info(list->value); | |
2897 | } | |
c054b3fd | 2898 | break; |
faea38e7 | 2899 | } |
c054b3fd | 2900 | |
9699bf0d | 2901 | qapi_free_ImageInfoList(list); |
ea2384d3 FB |
2902 | return 0; |
2903 | } | |
2904 | ||
30065d14 EB |
2905 | static int dump_map_entry(OutputFormat output_format, MapEntry *e, |
2906 | MapEntry *next) | |
4c93a13b PB |
2907 | { |
2908 | switch (output_format) { | |
2909 | case OFORMAT_HUMAN: | |
16b0d555 | 2910 | if (e->data && !e->has_offset) { |
4c93a13b | 2911 | error_report("File contains external, encrypted or compressed clusters."); |
30065d14 | 2912 | return -1; |
4c93a13b | 2913 | } |
16b0d555 | 2914 | if (e->data && !e->zero) { |
4c93a13b | 2915 | printf("%#-16"PRIx64"%#-16"PRIx64"%#-16"PRIx64"%s\n", |
16b0d555 FZ |
2916 | e->start, e->length, |
2917 | e->has_offset ? e->offset : 0, | |
2918 | e->has_filename ? e->filename : ""); | |
4c93a13b PB |
2919 | } |
2920 | /* This format ignores the distinction between 0, ZERO and ZERO|DATA. | |
2921 | * Modify the flags here to allow more coalescing. | |
2922 | */ | |
16b0d555 FZ |
2923 | if (next && (!next->data || next->zero)) { |
2924 | next->data = false; | |
2925 | next->zero = true; | |
4c93a13b PB |
2926 | } |
2927 | break; | |
2928 | case OFORMAT_JSON: | |
e46c0b18 | 2929 | printf("{ \"start\": %"PRId64", \"length\": %"PRId64"," |
16b0d555 | 2930 | " \"depth\": %"PRId64", \"zero\": %s, \"data\": %s", |
4c93a13b | 2931 | e->start, e->length, e->depth, |
16b0d555 FZ |
2932 | e->zero ? "true" : "false", |
2933 | e->data ? "true" : "false"); | |
2934 | if (e->has_offset) { | |
c745bfb4 | 2935 | printf(", \"offset\": %"PRId64"", e->offset); |
4c93a13b PB |
2936 | } |
2937 | putchar('}'); | |
2938 | ||
e46c0b18 EM |
2939 | if (next) { |
2940 | puts(","); | |
4c93a13b PB |
2941 | } |
2942 | break; | |
2943 | } | |
30065d14 | 2944 | return 0; |
4c93a13b PB |
2945 | } |
2946 | ||
5e344dd8 EB |
2947 | static int get_block_status(BlockDriverState *bs, int64_t offset, |
2948 | int64_t bytes, MapEntry *e) | |
4c93a13b | 2949 | { |
237d78f8 | 2950 | int ret; |
4c93a13b | 2951 | int depth; |
67a0fd2a | 2952 | BlockDriverState *file; |
2875645b | 2953 | bool has_offset; |
237d78f8 | 2954 | int64_t map; |
f30c66ba | 2955 | char *filename = NULL; |
4c93a13b PB |
2956 | |
2957 | /* As an optimization, we could cache the current range of unallocated | |
2958 | * clusters in each file of the chain, and avoid querying the same | |
2959 | * range repeatedly. | |
2960 | */ | |
2961 | ||
2962 | depth = 0; | |
2963 | for (;;) { | |
237d78f8 | 2964 | ret = bdrv_block_status(bs, offset, bytes, &bytes, &map, &file); |
4c93a13b PB |
2965 | if (ret < 0) { |
2966 | return ret; | |
2967 | } | |
237d78f8 | 2968 | assert(bytes); |
4c93a13b PB |
2969 | if (ret & (BDRV_BLOCK_ZERO|BDRV_BLOCK_DATA)) { |
2970 | break; | |
2971 | } | |
760e0063 | 2972 | bs = backing_bs(bs); |
4c93a13b PB |
2973 | if (bs == NULL) { |
2974 | ret = 0; | |
2975 | break; | |
2976 | } | |
2977 | ||
2978 | depth++; | |
2979 | } | |
2980 | ||
2875645b JS |
2981 | has_offset = !!(ret & BDRV_BLOCK_OFFSET_VALID); |
2982 | ||
f30c66ba HR |
2983 | if (file && has_offset) { |
2984 | bdrv_refresh_filename(file); | |
2985 | filename = file->filename; | |
2986 | } | |
2987 | ||
2875645b | 2988 | *e = (MapEntry) { |
5e344dd8 | 2989 | .start = offset, |
237d78f8 | 2990 | .length = bytes, |
2875645b JS |
2991 | .data = !!(ret & BDRV_BLOCK_DATA), |
2992 | .zero = !!(ret & BDRV_BLOCK_ZERO), | |
237d78f8 | 2993 | .offset = map, |
2875645b JS |
2994 | .has_offset = has_offset, |
2995 | .depth = depth, | |
f30c66ba HR |
2996 | .has_filename = filename, |
2997 | .filename = filename, | |
2875645b JS |
2998 | }; |
2999 | ||
4c93a13b PB |
3000 | return 0; |
3001 | } | |
3002 | ||
16b0d555 FZ |
3003 | static inline bool entry_mergeable(const MapEntry *curr, const MapEntry *next) |
3004 | { | |
3005 | if (curr->length == 0) { | |
3006 | return false; | |
3007 | } | |
3008 | if (curr->zero != next->zero || | |
3009 | curr->data != next->data || | |
3010 | curr->depth != next->depth || | |
3011 | curr->has_filename != next->has_filename || | |
3012 | curr->has_offset != next->has_offset) { | |
3013 | return false; | |
3014 | } | |
3015 | if (curr->has_filename && strcmp(curr->filename, next->filename)) { | |
3016 | return false; | |
3017 | } | |
3018 | if (curr->has_offset && curr->offset + curr->length != next->offset) { | |
3019 | return false; | |
3020 | } | |
3021 | return true; | |
3022 | } | |
3023 | ||
4c93a13b PB |
3024 | static int img_map(int argc, char **argv) |
3025 | { | |
3026 | int c; | |
3027 | OutputFormat output_format = OFORMAT_HUMAN; | |
26f54e9a | 3028 | BlockBackend *blk; |
4c93a13b PB |
3029 | BlockDriverState *bs; |
3030 | const char *filename, *fmt, *output; | |
3031 | int64_t length; | |
3032 | MapEntry curr = { .length = 0 }, next; | |
3033 | int ret = 0; | |
eb769f74 | 3034 | bool image_opts = false; |
335e9937 | 3035 | bool force_share = false; |
c0469496 EM |
3036 | int64_t start_offset = 0; |
3037 | int64_t max_length = -1; | |
4c93a13b PB |
3038 | |
3039 | fmt = NULL; | |
3040 | output = NULL; | |
3041 | for (;;) { | |
3042 | int option_index = 0; | |
3043 | static const struct option long_options[] = { | |
3044 | {"help", no_argument, 0, 'h'}, | |
3045 | {"format", required_argument, 0, 'f'}, | |
3046 | {"output", required_argument, 0, OPTION_OUTPUT}, | |
3babeb15 | 3047 | {"object", required_argument, 0, OPTION_OBJECT}, |
eb769f74 | 3048 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
335e9937 | 3049 | {"force-share", no_argument, 0, 'U'}, |
c0469496 EM |
3050 | {"start-offset", required_argument, 0, 's'}, |
3051 | {"max-length", required_argument, 0, 'l'}, | |
4c93a13b PB |
3052 | {0, 0, 0, 0} |
3053 | }; | |
c0469496 | 3054 | c = getopt_long(argc, argv, ":f:s:l:hU", |
4c93a13b PB |
3055 | long_options, &option_index); |
3056 | if (c == -1) { | |
3057 | break; | |
3058 | } | |
3059 | switch (c) { | |
c9192973 SH |
3060 | case ':': |
3061 | missing_argument(argv[optind - 1]); | |
3062 | break; | |
4c93a13b | 3063 | case '?': |
c9192973 SH |
3064 | unrecognized_option(argv[optind - 1]); |
3065 | break; | |
4c93a13b PB |
3066 | case 'h': |
3067 | help(); | |
3068 | break; | |
3069 | case 'f': | |
3070 | fmt = optarg; | |
3071 | break; | |
335e9937 FZ |
3072 | case 'U': |
3073 | force_share = true; | |
3074 | break; | |
4c93a13b PB |
3075 | case OPTION_OUTPUT: |
3076 | output = optarg; | |
3077 | break; | |
c0469496 EM |
3078 | case 's': |
3079 | start_offset = cvtnum("start offset", optarg); | |
3080 | if (start_offset < 0) { | |
3081 | return 1; | |
3082 | } | |
3083 | break; | |
3084 | case 'l': | |
3085 | max_length = cvtnum("max length", optarg); | |
3086 | if (max_length < 0) { | |
3087 | return 1; | |
3088 | } | |
3089 | break; | |
3babeb15 DB |
3090 | case OPTION_OBJECT: { |
3091 | QemuOpts *opts; | |
3092 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
3093 | optarg, true); | |
3094 | if (!opts) { | |
3095 | return 1; | |
3096 | } | |
3097 | } break; | |
eb769f74 DB |
3098 | case OPTION_IMAGE_OPTS: |
3099 | image_opts = true; | |
3100 | break; | |
4c93a13b PB |
3101 | } |
3102 | } | |
ac1307ab FZ |
3103 | if (optind != argc - 1) { |
3104 | error_exit("Expecting one image file name"); | |
4c93a13b | 3105 | } |
ac1307ab | 3106 | filename = argv[optind]; |
4c93a13b PB |
3107 | |
3108 | if (output && !strcmp(output, "json")) { | |
3109 | output_format = OFORMAT_JSON; | |
3110 | } else if (output && !strcmp(output, "human")) { | |
3111 | output_format = OFORMAT_HUMAN; | |
3112 | } else if (output) { | |
3113 | error_report("--output must be used with human or json as argument."); | |
3114 | return 1; | |
3115 | } | |
3116 | ||
3babeb15 DB |
3117 | if (qemu_opts_foreach(&qemu_object_opts, |
3118 | user_creatable_add_opts_foreach, | |
c6e5cdfd | 3119 | qemu_img_object_print_help, &error_fatal)) { |
3babeb15 DB |
3120 | return 1; |
3121 | } | |
3122 | ||
335e9937 | 3123 | blk = img_open(image_opts, filename, fmt, 0, false, false, force_share); |
7e7d56d9 MA |
3124 | if (!blk) { |
3125 | return 1; | |
4c93a13b | 3126 | } |
7e7d56d9 | 3127 | bs = blk_bs(blk); |
4c93a13b PB |
3128 | |
3129 | if (output_format == OFORMAT_HUMAN) { | |
3130 | printf("%-16s%-16s%-16s%s\n", "Offset", "Length", "Mapped to", "File"); | |
e46c0b18 EM |
3131 | } else if (output_format == OFORMAT_JSON) { |
3132 | putchar('['); | |
4c93a13b PB |
3133 | } |
3134 | ||
f1d3cd79 | 3135 | length = blk_getlength(blk); |
8f282e83 EM |
3136 | if (length < 0) { |
3137 | error_report("Failed to get size for '%s'", filename); | |
3138 | return 1; | |
3139 | } | |
c0469496 EM |
3140 | if (max_length != -1) { |
3141 | length = MIN(start_offset + max_length, length); | |
3142 | } | |
8f282e83 | 3143 | |
c0469496 | 3144 | curr.start = start_offset; |
4c93a13b | 3145 | while (curr.start + curr.length < length) { |
5e344dd8 EB |
3146 | int64_t offset = curr.start + curr.length; |
3147 | int64_t n; | |
4c93a13b PB |
3148 | |
3149 | /* Probe up to 1 GiB at a time. */ | |
97ede57a | 3150 | n = MIN(1 * GiB, length - offset); |
5e344dd8 | 3151 | ret = get_block_status(bs, offset, n, &next); |
4c93a13b PB |
3152 | |
3153 | if (ret < 0) { | |
3154 | error_report("Could not read file metadata: %s", strerror(-ret)); | |
3155 | goto out; | |
3156 | } | |
3157 | ||
16b0d555 | 3158 | if (entry_mergeable(&curr, &next)) { |
4c93a13b PB |
3159 | curr.length += next.length; |
3160 | continue; | |
3161 | } | |
3162 | ||
3163 | if (curr.length > 0) { | |
30065d14 EB |
3164 | ret = dump_map_entry(output_format, &curr, &next); |
3165 | if (ret < 0) { | |
3166 | goto out; | |
3167 | } | |
4c93a13b PB |
3168 | } |
3169 | curr = next; | |
3170 | } | |
3171 | ||
30065d14 | 3172 | ret = dump_map_entry(output_format, &curr, NULL); |
e46c0b18 EM |
3173 | if (output_format == OFORMAT_JSON) { |
3174 | puts("]"); | |
3175 | } | |
4c93a13b PB |
3176 | |
3177 | out: | |
26f54e9a | 3178 | blk_unref(blk); |
4c93a13b PB |
3179 | return ret < 0; |
3180 | } | |
3181 | ||
f7b4a940 AL |
3182 | #define SNAPSHOT_LIST 1 |
3183 | #define SNAPSHOT_CREATE 2 | |
3184 | #define SNAPSHOT_APPLY 3 | |
3185 | #define SNAPSHOT_DELETE 4 | |
3186 | ||
153859be | 3187 | static int img_snapshot(int argc, char **argv) |
f7b4a940 | 3188 | { |
26f54e9a | 3189 | BlockBackend *blk; |
f7b4a940 AL |
3190 | BlockDriverState *bs; |
3191 | QEMUSnapshotInfo sn; | |
3192 | char *filename, *snapshot_name = NULL; | |
c2abccec | 3193 | int c, ret = 0, bdrv_oflags; |
f7b4a940 AL |
3194 | int action = 0; |
3195 | qemu_timeval tv; | |
f382d43a | 3196 | bool quiet = false; |
a89d89d3 | 3197 | Error *err = NULL; |
eb769f74 | 3198 | bool image_opts = false; |
335e9937 | 3199 | bool force_share = false; |
f7b4a940 | 3200 | |
ce099547 | 3201 | bdrv_oflags = BDRV_O_RDWR; |
f7b4a940 AL |
3202 | /* Parse commandline parameters */ |
3203 | for(;;) { | |
3babeb15 DB |
3204 | static const struct option long_options[] = { |
3205 | {"help", no_argument, 0, 'h'}, | |
3206 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 3207 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
335e9937 | 3208 | {"force-share", no_argument, 0, 'U'}, |
3babeb15 DB |
3209 | {0, 0, 0, 0} |
3210 | }; | |
335e9937 | 3211 | c = getopt_long(argc, argv, ":la:c:d:hqU", |
3babeb15 | 3212 | long_options, NULL); |
b8fb60da | 3213 | if (c == -1) { |
f7b4a940 | 3214 | break; |
b8fb60da | 3215 | } |
f7b4a940 | 3216 | switch(c) { |
c9192973 SH |
3217 | case ':': |
3218 | missing_argument(argv[optind - 1]); | |
3219 | break; | |
ef87394c | 3220 | case '?': |
c9192973 SH |
3221 | unrecognized_option(argv[optind - 1]); |
3222 | break; | |
f7b4a940 AL |
3223 | case 'h': |
3224 | help(); | |
153859be | 3225 | return 0; |
f7b4a940 AL |
3226 | case 'l': |
3227 | if (action) { | |
ac1307ab | 3228 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 3229 | return 0; |
f7b4a940 AL |
3230 | } |
3231 | action = SNAPSHOT_LIST; | |
f5edb014 | 3232 | bdrv_oflags &= ~BDRV_O_RDWR; /* no need for RW */ |
f7b4a940 AL |
3233 | break; |
3234 | case 'a': | |
3235 | if (action) { | |
ac1307ab | 3236 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 3237 | return 0; |
f7b4a940 AL |
3238 | } |
3239 | action = SNAPSHOT_APPLY; | |
3240 | snapshot_name = optarg; | |
3241 | break; | |
3242 | case 'c': | |
3243 | if (action) { | |
ac1307ab | 3244 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 3245 | return 0; |
f7b4a940 AL |
3246 | } |
3247 | action = SNAPSHOT_CREATE; | |
3248 | snapshot_name = optarg; | |
3249 | break; | |
3250 | case 'd': | |
3251 | if (action) { | |
ac1307ab | 3252 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 3253 | return 0; |
f7b4a940 AL |
3254 | } |
3255 | action = SNAPSHOT_DELETE; | |
3256 | snapshot_name = optarg; | |
3257 | break; | |
f382d43a MR |
3258 | case 'q': |
3259 | quiet = true; | |
3260 | break; | |
335e9937 FZ |
3261 | case 'U': |
3262 | force_share = true; | |
3263 | break; | |
3babeb15 DB |
3264 | case OPTION_OBJECT: { |
3265 | QemuOpts *opts; | |
3266 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
3267 | optarg, true); | |
3268 | if (!opts) { | |
3269 | return 1; | |
3270 | } | |
3271 | } break; | |
eb769f74 DB |
3272 | case OPTION_IMAGE_OPTS: |
3273 | image_opts = true; | |
3274 | break; | |
f7b4a940 AL |
3275 | } |
3276 | } | |
3277 | ||
fc11eb26 | 3278 | if (optind != argc - 1) { |
ac1307ab | 3279 | error_exit("Expecting one image file name"); |
b8fb60da | 3280 | } |
f7b4a940 AL |
3281 | filename = argv[optind++]; |
3282 | ||
3babeb15 DB |
3283 | if (qemu_opts_foreach(&qemu_object_opts, |
3284 | user_creatable_add_opts_foreach, | |
c6e5cdfd | 3285 | qemu_img_object_print_help, &error_fatal)) { |
3babeb15 DB |
3286 | return 1; |
3287 | } | |
3288 | ||
f7b4a940 | 3289 | /* Open the image */ |
335e9937 FZ |
3290 | blk = img_open(image_opts, filename, NULL, bdrv_oflags, false, quiet, |
3291 | force_share); | |
7e7d56d9 MA |
3292 | if (!blk) { |
3293 | return 1; | |
c2abccec | 3294 | } |
7e7d56d9 | 3295 | bs = blk_bs(blk); |
f7b4a940 AL |
3296 | |
3297 | /* Perform the requested action */ | |
3298 | switch(action) { | |
3299 | case SNAPSHOT_LIST: | |
3300 | dump_snapshots(bs); | |
3301 | break; | |
3302 | ||
3303 | case SNAPSHOT_CREATE: | |
3304 | memset(&sn, 0, sizeof(sn)); | |
3305 | pstrcpy(sn.name, sizeof(sn.name), snapshot_name); | |
3306 | ||
3307 | qemu_gettimeofday(&tv); | |
3308 | sn.date_sec = tv.tv_sec; | |
3309 | sn.date_nsec = tv.tv_usec * 1000; | |
3310 | ||
3311 | ret = bdrv_snapshot_create(bs, &sn); | |
b8fb60da | 3312 | if (ret) { |
15654a6d | 3313 | error_report("Could not create snapshot '%s': %d (%s)", |
f7b4a940 | 3314 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 3315 | } |
f7b4a940 AL |
3316 | break; |
3317 | ||
3318 | case SNAPSHOT_APPLY: | |
0b62bcbc | 3319 | ret = bdrv_snapshot_goto(bs, snapshot_name, &err); |
b8fb60da | 3320 | if (ret) { |
0b62bcbc KW |
3321 | error_reportf_err(err, "Could not apply snapshot '%s': ", |
3322 | snapshot_name); | |
b8fb60da | 3323 | } |
f7b4a940 AL |
3324 | break; |
3325 | ||
3326 | case SNAPSHOT_DELETE: | |
8c04093c DHB |
3327 | ret = bdrv_snapshot_find(bs, &sn, snapshot_name); |
3328 | if (ret < 0) { | |
3329 | error_report("Could not delete snapshot '%s': snapshot not " | |
3330 | "found", snapshot_name); | |
a89d89d3 | 3331 | ret = 1; |
8c04093c DHB |
3332 | } else { |
3333 | ret = bdrv_snapshot_delete(bs, sn.id_str, sn.name, &err); | |
3334 | if (ret < 0) { | |
3335 | error_reportf_err(err, "Could not delete snapshot '%s': ", | |
3336 | snapshot_name); | |
3337 | ret = 1; | |
3338 | } | |
b8fb60da | 3339 | } |
f7b4a940 AL |
3340 | break; |
3341 | } | |
3342 | ||
3343 | /* Cleanup */ | |
26f54e9a | 3344 | blk_unref(blk); |
c2abccec MK |
3345 | if (ret) { |
3346 | return 1; | |
3347 | } | |
153859be | 3348 | return 0; |
f7b4a940 AL |
3349 | } |
3350 | ||
3e85c6fd KW |
3351 | static int img_rebase(int argc, char **argv) |
3352 | { | |
26f54e9a | 3353 | BlockBackend *blk = NULL, *blk_old_backing = NULL, *blk_new_backing = NULL; |
396374ca PB |
3354 | uint8_t *buf_old = NULL; |
3355 | uint8_t *buf_new = NULL; | |
863cc78f | 3356 | BlockDriverState *bs = NULL, *prefix_chain_bs = NULL; |
3e85c6fd | 3357 | char *filename; |
40055951 HR |
3358 | const char *fmt, *cache, *src_cache, *out_basefmt, *out_baseimg; |
3359 | int c, flags, src_flags, ret; | |
ce099547 | 3360 | bool writethrough, src_writethrough; |
3e85c6fd | 3361 | int unsafe = 0; |
335e9937 | 3362 | bool force_share = false; |
6b837bc4 | 3363 | int progress = 0; |
f382d43a | 3364 | bool quiet = false; |
34b5d2c6 | 3365 | Error *local_err = NULL; |
eb769f74 | 3366 | bool image_opts = false; |
3e85c6fd KW |
3367 | |
3368 | /* Parse commandline parameters */ | |
e53dbee0 | 3369 | fmt = NULL; |
661a0f71 | 3370 | cache = BDRV_DEFAULT_CACHE; |
40055951 | 3371 | src_cache = BDRV_DEFAULT_CACHE; |
3e85c6fd KW |
3372 | out_baseimg = NULL; |
3373 | out_basefmt = NULL; | |
3e85c6fd | 3374 | for(;;) { |
3babeb15 DB |
3375 | static const struct option long_options[] = { |
3376 | {"help", no_argument, 0, 'h'}, | |
3377 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 3378 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
335e9937 | 3379 | {"force-share", no_argument, 0, 'U'}, |
3babeb15 DB |
3380 | {0, 0, 0, 0} |
3381 | }; | |
335e9937 | 3382 | c = getopt_long(argc, argv, ":hf:F:b:upt:T:qU", |
3babeb15 | 3383 | long_options, NULL); |
b8fb60da | 3384 | if (c == -1) { |
3e85c6fd | 3385 | break; |
b8fb60da | 3386 | } |
3e85c6fd | 3387 | switch(c) { |
c9192973 SH |
3388 | case ':': |
3389 | missing_argument(argv[optind - 1]); | |
3390 | break; | |
ef87394c | 3391 | case '?': |
c9192973 SH |
3392 | unrecognized_option(argv[optind - 1]); |
3393 | break; | |
3e85c6fd KW |
3394 | case 'h': |
3395 | help(); | |
3396 | return 0; | |
e53dbee0 KW |
3397 | case 'f': |
3398 | fmt = optarg; | |
3399 | break; | |
3e85c6fd KW |
3400 | case 'F': |
3401 | out_basefmt = optarg; | |
3402 | break; | |
3403 | case 'b': | |
3404 | out_baseimg = optarg; | |
3405 | break; | |
3406 | case 'u': | |
3407 | unsafe = 1; | |
3408 | break; | |
6b837bc4 JS |
3409 | case 'p': |
3410 | progress = 1; | |
3411 | break; | |
661a0f71 FS |
3412 | case 't': |
3413 | cache = optarg; | |
3414 | break; | |
40055951 HR |
3415 | case 'T': |
3416 | src_cache = optarg; | |
3417 | break; | |
f382d43a MR |
3418 | case 'q': |
3419 | quiet = true; | |
3420 | break; | |
3babeb15 DB |
3421 | case OPTION_OBJECT: { |
3422 | QemuOpts *opts; | |
3423 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
3424 | optarg, true); | |
3425 | if (!opts) { | |
3426 | return 1; | |
3427 | } | |
3428 | } break; | |
eb769f74 DB |
3429 | case OPTION_IMAGE_OPTS: |
3430 | image_opts = true; | |
3431 | break; | |
335e9937 FZ |
3432 | case 'U': |
3433 | force_share = true; | |
3434 | break; | |
3e85c6fd KW |
3435 | } |
3436 | } | |
3437 | ||
f382d43a MR |
3438 | if (quiet) { |
3439 | progress = 0; | |
3440 | } | |
3441 | ||
ac1307ab FZ |
3442 | if (optind != argc - 1) { |
3443 | error_exit("Expecting one image file name"); | |
3444 | } | |
3445 | if (!unsafe && !out_baseimg) { | |
3446 | error_exit("Must specify backing file (-b) or use unsafe mode (-u)"); | |
b8fb60da | 3447 | } |
3e85c6fd KW |
3448 | filename = argv[optind++]; |
3449 | ||
3babeb15 DB |
3450 | if (qemu_opts_foreach(&qemu_object_opts, |
3451 | user_creatable_add_opts_foreach, | |
c6e5cdfd | 3452 | qemu_img_object_print_help, &error_fatal)) { |
3babeb15 DB |
3453 | return 1; |
3454 | } | |
3455 | ||
6b837bc4 JS |
3456 | qemu_progress_init(progress, 2.0); |
3457 | qemu_progress_print(0, 100); | |
3458 | ||
661a0f71 | 3459 | flags = BDRV_O_RDWR | (unsafe ? BDRV_O_NO_BACKING : 0); |
ce099547 | 3460 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); |
661a0f71 FS |
3461 | if (ret < 0) { |
3462 | error_report("Invalid cache option: %s", cache); | |
40ed35a3 | 3463 | goto out; |
661a0f71 FS |
3464 | } |
3465 | ||
ce099547 KW |
3466 | src_flags = 0; |
3467 | ret = bdrv_parse_cache_mode(src_cache, &src_flags, &src_writethrough); | |
40055951 HR |
3468 | if (ret < 0) { |
3469 | error_report("Invalid source cache option: %s", src_cache); | |
40ed35a3 | 3470 | goto out; |
40055951 HR |
3471 | } |
3472 | ||
ce099547 KW |
3473 | /* The source files are opened read-only, don't care about WCE */ |
3474 | assert((src_flags & BDRV_O_RDWR) == 0); | |
3475 | (void) src_writethrough; | |
3476 | ||
3e85c6fd KW |
3477 | /* |
3478 | * Open the images. | |
3479 | * | |
3480 | * Ignore the old backing file for unsafe rebase in case we want to correct | |
3481 | * the reference to a renamed or moved backing file. | |
3482 | */ | |
335e9937 FZ |
3483 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet, |
3484 | false); | |
7e7d56d9 | 3485 | if (!blk) { |
40ed35a3 SH |
3486 | ret = -1; |
3487 | goto out; | |
c2abccec | 3488 | } |
7e7d56d9 | 3489 | bs = blk_bs(blk); |
3e85c6fd | 3490 | |
3e85c6fd | 3491 | if (out_basefmt != NULL) { |
644483d9 | 3492 | if (bdrv_find_format(out_basefmt) == NULL) { |
15654a6d | 3493 | error_report("Invalid format name: '%s'", out_basefmt); |
c2abccec MK |
3494 | ret = -1; |
3495 | goto out; | |
3e85c6fd KW |
3496 | } |
3497 | } | |
3498 | ||
3499 | /* For safe rebasing we need to compare old and new backing file */ | |
40ed35a3 | 3500 | if (!unsafe) { |
644483d9 | 3501 | QDict *options = NULL; |
4ebe0617 | 3502 | BlockDriverState *base_bs = backing_bs(bs); |
644483d9 | 3503 | |
4ebe0617 | 3504 | if (base_bs) { |
d861ab3a KW |
3505 | blk_old_backing = blk_new(qemu_get_aio_context(), |
3506 | BLK_PERM_CONSISTENT_READ, | |
4ebe0617 SE |
3507 | BLK_PERM_ALL); |
3508 | ret = blk_insert_bs(blk_old_backing, base_bs, | |
3509 | &local_err); | |
3510 | if (ret < 0) { | |
35ddd930 | 3511 | error_reportf_err(local_err, |
4ebe0617 SE |
3512 | "Could not reuse old backing file '%s': ", |
3513 | base_bs->filename); | |
35ddd930 HR |
3514 | goto out; |
3515 | } | |
3516 | } else { | |
3517 | blk_old_backing = NULL; | |
3e85c6fd | 3518 | } |
644483d9 | 3519 | |
a616673d | 3520 | if (out_baseimg[0]) { |
d16699b6 HR |
3521 | const char *overlay_filename; |
3522 | char *out_real_path; | |
3523 | ||
335e9937 | 3524 | options = qdict_new(); |
644483d9 | 3525 | if (out_basefmt) { |
46f5ac20 | 3526 | qdict_put_str(options, "driver", out_basefmt); |
335e9937 FZ |
3527 | } |
3528 | if (force_share) { | |
3529 | qdict_put_bool(options, BDRV_OPT_FORCE_SHARE, true); | |
644483d9 HR |
3530 | } |
3531 | ||
f30c66ba | 3532 | bdrv_refresh_filename(bs); |
d16699b6 HR |
3533 | overlay_filename = bs->exact_filename[0] ? bs->exact_filename |
3534 | : bs->filename; | |
645ae7d8 HR |
3535 | out_real_path = |
3536 | bdrv_get_full_backing_filename_from_filename(overlay_filename, | |
3537 | out_baseimg, | |
3538 | &local_err); | |
d16699b6 | 3539 | if (local_err) { |
f22356d9 | 3540 | qobject_unref(options); |
d16699b6 HR |
3541 | error_reportf_err(local_err, |
3542 | "Could not resolve backing filename: "); | |
3543 | ret = -1; | |
d16699b6 HR |
3544 | goto out; |
3545 | } | |
3546 | ||
863cc78f SE |
3547 | /* |
3548 | * Find out whether we rebase an image on top of a previous image | |
3549 | * in its chain. | |
3550 | */ | |
3551 | prefix_chain_bs = bdrv_find_backing_image(bs, out_real_path); | |
330c7295 | 3552 | if (prefix_chain_bs) { |
f22356d9 | 3553 | qobject_unref(options); |
330c7295 | 3554 | g_free(out_real_path); |
f22356d9 | 3555 | |
d861ab3a KW |
3556 | blk_new_backing = blk_new(qemu_get_aio_context(), |
3557 | BLK_PERM_CONSISTENT_READ, | |
330c7295 SE |
3558 | BLK_PERM_ALL); |
3559 | ret = blk_insert_bs(blk_new_backing, prefix_chain_bs, | |
3560 | &local_err); | |
3561 | if (ret < 0) { | |
3562 | error_reportf_err(local_err, | |
3563 | "Could not reuse backing file '%s': ", | |
3564 | out_baseimg); | |
3565 | goto out; | |
3566 | } | |
3567 | } else { | |
3568 | blk_new_backing = blk_new_open(out_real_path, NULL, | |
3569 | options, src_flags, &local_err); | |
3570 | g_free(out_real_path); | |
3571 | if (!blk_new_backing) { | |
3572 | error_reportf_err(local_err, | |
3573 | "Could not open new backing file '%s': ", | |
3574 | out_baseimg); | |
3575 | ret = -1; | |
3576 | goto out; | |
3577 | } | |
a616673d | 3578 | } |
3e85c6fd KW |
3579 | } |
3580 | } | |
3581 | ||
3582 | /* | |
3583 | * Check each unallocated cluster in the COW file. If it is unallocated, | |
3584 | * accesses go to the backing file. We must therefore compare this cluster | |
3585 | * in the old and new backing file, and if they differ we need to copy it | |
3586 | * from the old backing file into the COW file. | |
3587 | * | |
3588 | * If qemu-img crashes during this step, no harm is done. The content of | |
3589 | * the image is the same as the original one at any time. | |
3590 | */ | |
3591 | if (!unsafe) { | |
41536287 | 3592 | int64_t size; |
35ddd930 | 3593 | int64_t old_backing_size = 0; |
41536287 EB |
3594 | int64_t new_backing_size = 0; |
3595 | uint64_t offset; | |
3596 | int64_t n; | |
1f710495 | 3597 | float local_progress = 0; |
d6771bfa | 3598 | |
f1d3cd79 HR |
3599 | buf_old = blk_blockalign(blk, IO_BUF_SIZE); |
3600 | buf_new = blk_blockalign(blk, IO_BUF_SIZE); | |
3e85c6fd | 3601 | |
41536287 EB |
3602 | size = blk_getlength(blk); |
3603 | if (size < 0) { | |
52bf1e72 | 3604 | error_report("Could not get size of '%s': %s", |
41536287 | 3605 | filename, strerror(-size)); |
52bf1e72 MA |
3606 | ret = -1; |
3607 | goto out; | |
3608 | } | |
35ddd930 HR |
3609 | if (blk_old_backing) { |
3610 | old_backing_size = blk_getlength(blk_old_backing); | |
3611 | if (old_backing_size < 0) { | |
3612 | char backing_name[PATH_MAX]; | |
52bf1e72 | 3613 | |
35ddd930 HR |
3614 | bdrv_get_backing_filename(bs, backing_name, |
3615 | sizeof(backing_name)); | |
3616 | error_report("Could not get size of '%s': %s", | |
3617 | backing_name, strerror(-old_backing_size)); | |
3618 | ret = -1; | |
3619 | goto out; | |
3620 | } | |
52bf1e72 | 3621 | } |
f1d3cd79 | 3622 | if (blk_new_backing) { |
41536287 EB |
3623 | new_backing_size = blk_getlength(blk_new_backing); |
3624 | if (new_backing_size < 0) { | |
52bf1e72 | 3625 | error_report("Could not get size of '%s': %s", |
41536287 | 3626 | out_baseimg, strerror(-new_backing_size)); |
52bf1e72 MA |
3627 | ret = -1; |
3628 | goto out; | |
3629 | } | |
a616673d | 3630 | } |
3e85c6fd | 3631 | |
41536287 EB |
3632 | if (size != 0) { |
3633 | local_progress = (float)100 / (size / MIN(size, IO_BUF_SIZE)); | |
1f710495 KW |
3634 | } |
3635 | ||
41536287 | 3636 | for (offset = 0; offset < size; offset += n) { |
1c6e8779 HR |
3637 | bool buf_old_is_zero = false; |
3638 | ||
41536287 EB |
3639 | /* How many bytes can we handle with the next read? */ |
3640 | n = MIN(IO_BUF_SIZE, size - offset); | |
3e85c6fd KW |
3641 | |
3642 | /* If the cluster is allocated, we don't need to take action */ | |
41536287 | 3643 | ret = bdrv_is_allocated(bs, offset, n, &n); |
d663640c PB |
3644 | if (ret < 0) { |
3645 | error_report("error while reading image metadata: %s", | |
3646 | strerror(-ret)); | |
3647 | goto out; | |
3648 | } | |
cc60e327 | 3649 | if (ret) { |
3e85c6fd KW |
3650 | continue; |
3651 | } | |
3652 | ||
863cc78f SE |
3653 | if (prefix_chain_bs) { |
3654 | /* | |
3655 | * If cluster wasn't changed since prefix_chain, we don't need | |
3656 | * to take action | |
3657 | */ | |
3658 | ret = bdrv_is_allocated_above(backing_bs(bs), prefix_chain_bs, | |
170d3bd3 | 3659 | false, offset, n, &n); |
863cc78f SE |
3660 | if (ret < 0) { |
3661 | error_report("error while reading image metadata: %s", | |
3662 | strerror(-ret)); | |
3663 | goto out; | |
3664 | } | |
3665 | if (!ret) { | |
3666 | continue; | |
3667 | } | |
3668 | } | |
3669 | ||
87a1b3e3 KW |
3670 | /* |
3671 | * Read old and new backing file and take into consideration that | |
3672 | * backing files may be smaller than the COW image. | |
3673 | */ | |
41536287 EB |
3674 | if (offset >= old_backing_size) { |
3675 | memset(buf_old, 0, n); | |
1c6e8779 | 3676 | buf_old_is_zero = true; |
87a1b3e3 | 3677 | } else { |
41536287 EB |
3678 | if (offset + n > old_backing_size) { |
3679 | n = old_backing_size - offset; | |
87a1b3e3 KW |
3680 | } |
3681 | ||
41536287 | 3682 | ret = blk_pread(blk_old_backing, offset, buf_old, n); |
87a1b3e3 KW |
3683 | if (ret < 0) { |
3684 | error_report("error while reading from old backing file"); | |
3685 | goto out; | |
3686 | } | |
3e85c6fd | 3687 | } |
87a1b3e3 | 3688 | |
41536287 EB |
3689 | if (offset >= new_backing_size || !blk_new_backing) { |
3690 | memset(buf_new, 0, n); | |
87a1b3e3 | 3691 | } else { |
41536287 EB |
3692 | if (offset + n > new_backing_size) { |
3693 | n = new_backing_size - offset; | |
87a1b3e3 KW |
3694 | } |
3695 | ||
41536287 | 3696 | ret = blk_pread(blk_new_backing, offset, buf_new, n); |
87a1b3e3 KW |
3697 | if (ret < 0) { |
3698 | error_report("error while reading from new backing file"); | |
3699 | goto out; | |
3700 | } | |
3e85c6fd KW |
3701 | } |
3702 | ||
3703 | /* If they differ, we need to write to the COW file */ | |
3704 | uint64_t written = 0; | |
3705 | ||
41536287 | 3706 | while (written < n) { |
dc61cd3b | 3707 | int64_t pnum; |
3e85c6fd | 3708 | |
41536287 EB |
3709 | if (compare_buffers(buf_old + written, buf_new + written, |
3710 | n - written, &pnum)) | |
3e85c6fd | 3711 | { |
1c6e8779 HR |
3712 | if (buf_old_is_zero) { |
3713 | ret = blk_pwrite_zeroes(blk, offset + written, pnum, 0); | |
3714 | } else { | |
3715 | ret = blk_pwrite(blk, offset + written, | |
3716 | buf_old + written, pnum, 0); | |
3717 | } | |
3e85c6fd | 3718 | if (ret < 0) { |
15654a6d | 3719 | error_report("Error while writing to COW image: %s", |
3e85c6fd | 3720 | strerror(-ret)); |
c2abccec | 3721 | goto out; |
3e85c6fd KW |
3722 | } |
3723 | } | |
3724 | ||
3725 | written += pnum; | |
3726 | } | |
6b837bc4 | 3727 | qemu_progress_print(local_progress, 100); |
3e85c6fd KW |
3728 | } |
3729 | } | |
3730 | ||
3731 | /* | |
3732 | * Change the backing file. All clusters that are different from the old | |
3733 | * backing file are overwritten in the COW file now, so the visible content | |
3734 | * doesn't change when we switch the backing file. | |
3735 | */ | |
a616673d AB |
3736 | if (out_baseimg && *out_baseimg) { |
3737 | ret = bdrv_change_backing_file(bs, out_baseimg, out_basefmt); | |
3738 | } else { | |
3739 | ret = bdrv_change_backing_file(bs, NULL, NULL); | |
3740 | } | |
3741 | ||
3e85c6fd | 3742 | if (ret == -ENOSPC) { |
15654a6d JS |
3743 | error_report("Could not change the backing file to '%s': No " |
3744 | "space left in the file header", out_baseimg); | |
3e85c6fd | 3745 | } else if (ret < 0) { |
15654a6d | 3746 | error_report("Could not change the backing file to '%s': %s", |
3e85c6fd KW |
3747 | out_baseimg, strerror(-ret)); |
3748 | } | |
3749 | ||
6b837bc4 | 3750 | qemu_progress_print(100, 0); |
3e85c6fd KW |
3751 | /* |
3752 | * TODO At this point it is possible to check if any clusters that are | |
3753 | * allocated in the COW file are the same in the backing file. If so, they | |
3754 | * could be dropped from the COW file. Don't do this before switching the | |
3755 | * backing file, in case of a crash this would lead to corruption. | |
3756 | */ | |
c2abccec | 3757 | out: |
6b837bc4 | 3758 | qemu_progress_end(); |
3e85c6fd KW |
3759 | /* Cleanup */ |
3760 | if (!unsafe) { | |
26f54e9a | 3761 | blk_unref(blk_old_backing); |
26f54e9a | 3762 | blk_unref(blk_new_backing); |
3e85c6fd | 3763 | } |
396374ca PB |
3764 | qemu_vfree(buf_old); |
3765 | qemu_vfree(buf_new); | |
3e85c6fd | 3766 | |
26f54e9a | 3767 | blk_unref(blk); |
c2abccec MK |
3768 | if (ret) { |
3769 | return 1; | |
3770 | } | |
3e85c6fd KW |
3771 | return 0; |
3772 | } | |
3773 | ||
ae6b0ed6 SH |
3774 | static int img_resize(int argc, char **argv) |
3775 | { | |
6750e795 | 3776 | Error *err = NULL; |
ae6b0ed6 SH |
3777 | int c, ret, relative; |
3778 | const char *filename, *fmt, *size; | |
09c5c6de | 3779 | int64_t n, total_size, current_size; |
f382d43a | 3780 | bool quiet = false; |
26f54e9a | 3781 | BlockBackend *blk = NULL; |
dc5f690b | 3782 | PreallocMode prealloc = PREALLOC_MODE_OFF; |
20caf0f7 | 3783 | QemuOpts *param; |
3babeb15 | 3784 | |
20caf0f7 DXW |
3785 | static QemuOptsList resize_options = { |
3786 | .name = "resize_options", | |
3787 | .head = QTAILQ_HEAD_INITIALIZER(resize_options.head), | |
3788 | .desc = { | |
3789 | { | |
3790 | .name = BLOCK_OPT_SIZE, | |
3791 | .type = QEMU_OPT_SIZE, | |
3792 | .help = "Virtual disk size" | |
3793 | }, { | |
3794 | /* end of list */ | |
3795 | } | |
ae6b0ed6 | 3796 | }, |
ae6b0ed6 | 3797 | }; |
eb769f74 | 3798 | bool image_opts = false; |
4ffca890 | 3799 | bool shrink = false; |
ae6b0ed6 | 3800 | |
e80fec7f KW |
3801 | /* Remove size from argv manually so that negative numbers are not treated |
3802 | * as options by getopt. */ | |
3803 | if (argc < 3) { | |
ac1307ab | 3804 | error_exit("Not enough arguments"); |
e80fec7f KW |
3805 | return 1; |
3806 | } | |
3807 | ||
3808 | size = argv[--argc]; | |
3809 | ||
3810 | /* Parse getopt arguments */ | |
ae6b0ed6 SH |
3811 | fmt = NULL; |
3812 | for(;;) { | |
3babeb15 DB |
3813 | static const struct option long_options[] = { |
3814 | {"help", no_argument, 0, 'h'}, | |
3815 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 3816 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
dc5f690b | 3817 | {"preallocation", required_argument, 0, OPTION_PREALLOCATION}, |
4ffca890 | 3818 | {"shrink", no_argument, 0, OPTION_SHRINK}, |
3babeb15 DB |
3819 | {0, 0, 0, 0} |
3820 | }; | |
c9192973 | 3821 | c = getopt_long(argc, argv, ":f:hq", |
3babeb15 | 3822 | long_options, NULL); |
ae6b0ed6 SH |
3823 | if (c == -1) { |
3824 | break; | |
3825 | } | |
3826 | switch(c) { | |
c9192973 SH |
3827 | case ':': |
3828 | missing_argument(argv[optind - 1]); | |
3829 | break; | |
ef87394c | 3830 | case '?': |
c9192973 SH |
3831 | unrecognized_option(argv[optind - 1]); |
3832 | break; | |
ae6b0ed6 SH |
3833 | case 'h': |
3834 | help(); | |
3835 | break; | |
3836 | case 'f': | |
3837 | fmt = optarg; | |
3838 | break; | |
f382d43a MR |
3839 | case 'q': |
3840 | quiet = true; | |
3841 | break; | |
3babeb15 DB |
3842 | case OPTION_OBJECT: { |
3843 | QemuOpts *opts; | |
3844 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
3845 | optarg, true); | |
3846 | if (!opts) { | |
3847 | return 1; | |
3848 | } | |
3849 | } break; | |
eb769f74 DB |
3850 | case OPTION_IMAGE_OPTS: |
3851 | image_opts = true; | |
3852 | break; | |
dc5f690b | 3853 | case OPTION_PREALLOCATION: |
f7abe0ec | 3854 | prealloc = qapi_enum_parse(&PreallocMode_lookup, optarg, |
06c60b6c | 3855 | PREALLOC_MODE__MAX, NULL); |
dc5f690b HR |
3856 | if (prealloc == PREALLOC_MODE__MAX) { |
3857 | error_report("Invalid preallocation mode '%s'", optarg); | |
3858 | return 1; | |
3859 | } | |
3860 | break; | |
4ffca890 PB |
3861 | case OPTION_SHRINK: |
3862 | shrink = true; | |
3863 | break; | |
ae6b0ed6 SH |
3864 | } |
3865 | } | |
fc11eb26 | 3866 | if (optind != argc - 1) { |
be8fbd47 | 3867 | error_exit("Expecting image file name and size"); |
ae6b0ed6 SH |
3868 | } |
3869 | filename = argv[optind++]; | |
ae6b0ed6 | 3870 | |
3babeb15 DB |
3871 | if (qemu_opts_foreach(&qemu_object_opts, |
3872 | user_creatable_add_opts_foreach, | |
c6e5cdfd | 3873 | qemu_img_object_print_help, &error_fatal)) { |
3babeb15 DB |
3874 | return 1; |
3875 | } | |
3876 | ||
ae6b0ed6 SH |
3877 | /* Choose grow, shrink, or absolute resize mode */ |
3878 | switch (size[0]) { | |
3879 | case '+': | |
3880 | relative = 1; | |
3881 | size++; | |
3882 | break; | |
3883 | case '-': | |
3884 | relative = -1; | |
3885 | size++; | |
3886 | break; | |
3887 | default: | |
3888 | relative = 0; | |
3889 | break; | |
3890 | } | |
3891 | ||
3892 | /* Parse size */ | |
87ea75d5 | 3893 | param = qemu_opts_create(&resize_options, NULL, 0, &error_abort); |
f43e47db | 3894 | qemu_opt_set(param, BLOCK_OPT_SIZE, size, &err); |
6750e795 MA |
3895 | if (err) { |
3896 | error_report_err(err); | |
2a81998a | 3897 | ret = -1; |
20caf0f7 | 3898 | qemu_opts_del(param); |
2a81998a | 3899 | goto out; |
ae6b0ed6 | 3900 | } |
20caf0f7 DXW |
3901 | n = qemu_opt_get_size(param, BLOCK_OPT_SIZE, 0); |
3902 | qemu_opts_del(param); | |
ae6b0ed6 | 3903 | |
efaa7c4e | 3904 | blk = img_open(image_opts, filename, fmt, |
335e9937 FZ |
3905 | BDRV_O_RDWR | BDRV_O_RESIZE, false, quiet, |
3906 | false); | |
7e7d56d9 | 3907 | if (!blk) { |
2a81998a JS |
3908 | ret = -1; |
3909 | goto out; | |
c2abccec | 3910 | } |
ae6b0ed6 | 3911 | |
dc5f690b HR |
3912 | current_size = blk_getlength(blk); |
3913 | if (current_size < 0) { | |
3914 | error_report("Failed to inquire current image length: %s", | |
3915 | strerror(-current_size)); | |
3916 | ret = -1; | |
3917 | goto out; | |
3918 | } | |
3919 | ||
ae6b0ed6 | 3920 | if (relative) { |
dc5f690b | 3921 | total_size = current_size + n * relative; |
ae6b0ed6 SH |
3922 | } else { |
3923 | total_size = n; | |
3924 | } | |
3925 | if (total_size <= 0) { | |
15654a6d | 3926 | error_report("New image size must be positive"); |
c2abccec MK |
3927 | ret = -1; |
3928 | goto out; | |
ae6b0ed6 SH |
3929 | } |
3930 | ||
dc5f690b HR |
3931 | if (total_size <= current_size && prealloc != PREALLOC_MODE_OFF) { |
3932 | error_report("Preallocation can only be used for growing images"); | |
3933 | ret = -1; | |
3934 | goto out; | |
3935 | } | |
3936 | ||
4ffca890 PB |
3937 | if (total_size < current_size && !shrink) { |
3938 | warn_report("Shrinking an image will delete all data beyond the " | |
3939 | "shrunken image's end. Before performing such an " | |
3940 | "operation, make sure there is no important data there."); | |
3941 | ||
3942 | if (g_strcmp0(bdrv_get_format_name(blk_bs(blk)), "raw") != 0) { | |
3943 | error_report( | |
3944 | "Use the --shrink option to perform a shrink operation."); | |
3945 | ret = -1; | |
3946 | goto out; | |
3947 | } else { | |
3948 | warn_report("Using the --shrink option will suppress this message. " | |
3949 | "Note that future versions of qemu-img may refuse to " | |
3950 | "shrink images without this option."); | |
3951 | } | |
3952 | } | |
3953 | ||
e8d04f92 HR |
3954 | /* |
3955 | * The user expects the image to have the desired size after | |
3956 | * resizing, so pass @exact=true. It is of no use to report | |
3957 | * success when the image has not actually been resized. | |
3958 | */ | |
8c6242b6 | 3959 | ret = blk_truncate(blk, total_size, true, prealloc, 0, &err); |
09c5c6de HR |
3960 | if (!ret) { |
3961 | qprintf(quiet, "Image resized.\n"); | |
3962 | } else { | |
ed3d2ec9 | 3963 | error_report_err(err); |
ae6b0ed6 | 3964 | } |
c2abccec | 3965 | out: |
26f54e9a | 3966 | blk_unref(blk); |
c2abccec MK |
3967 | if (ret) { |
3968 | return 1; | |
3969 | } | |
ae6b0ed6 SH |
3970 | return 0; |
3971 | } | |
3972 | ||
76a3a34d | 3973 | static void amend_status_cb(BlockDriverState *bs, |
8b13976d HR |
3974 | int64_t offset, int64_t total_work_size, |
3975 | void *opaque) | |
76a3a34d HR |
3976 | { |
3977 | qemu_progress_print(100.f * offset / total_work_size, 0); | |
3978 | } | |
3979 | ||
51641351 HR |
3980 | static int print_amend_option_help(const char *format) |
3981 | { | |
3982 | BlockDriver *drv; | |
3983 | ||
3984 | /* Find driver and parse its options */ | |
3985 | drv = bdrv_find_format(format); | |
3986 | if (!drv) { | |
3987 | error_report("Unknown file format '%s'", format); | |
3988 | return 1; | |
3989 | } | |
3990 | ||
3991 | if (!drv->bdrv_amend_options) { | |
3992 | error_report("Format driver '%s' does not support option amendment", | |
3993 | format); | |
3994 | return 1; | |
3995 | } | |
3996 | ||
3997 | /* Every driver supporting amendment must have create_opts */ | |
3998 | assert(drv->create_opts); | |
3999 | ||
4000 | printf("Creation options for '%s':\n", format); | |
63898712 | 4001 | qemu_opts_print_help(drv->create_opts, false); |
51641351 HR |
4002 | printf("\nNote that not all of these options may be amendable.\n"); |
4003 | return 0; | |
4004 | } | |
4005 | ||
6f176b48 HR |
4006 | static int img_amend(int argc, char **argv) |
4007 | { | |
dc523cd3 | 4008 | Error *err = NULL; |
6f176b48 HR |
4009 | int c, ret = 0; |
4010 | char *options = NULL; | |
83d0521a CL |
4011 | QemuOptsList *create_opts = NULL; |
4012 | QemuOpts *opts = NULL; | |
bd39e6ed HR |
4013 | const char *fmt = NULL, *filename, *cache; |
4014 | int flags; | |
ce099547 | 4015 | bool writethrough; |
76a3a34d | 4016 | bool quiet = false, progress = false; |
26f54e9a | 4017 | BlockBackend *blk = NULL; |
6f176b48 | 4018 | BlockDriverState *bs = NULL; |
eb769f74 | 4019 | bool image_opts = false; |
6f176b48 | 4020 | |
bd39e6ed | 4021 | cache = BDRV_DEFAULT_CACHE; |
6f176b48 | 4022 | for (;;) { |
3babeb15 DB |
4023 | static const struct option long_options[] = { |
4024 | {"help", no_argument, 0, 'h'}, | |
4025 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 4026 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
4027 | {0, 0, 0, 0} |
4028 | }; | |
c9192973 | 4029 | c = getopt_long(argc, argv, ":ho:f:t:pq", |
3babeb15 | 4030 | long_options, NULL); |
6f176b48 HR |
4031 | if (c == -1) { |
4032 | break; | |
4033 | } | |
4034 | ||
4035 | switch (c) { | |
c9192973 SH |
4036 | case ':': |
4037 | missing_argument(argv[optind - 1]); | |
4038 | break; | |
f7077624 | 4039 | case '?': |
c9192973 SH |
4040 | unrecognized_option(argv[optind - 1]); |
4041 | break; | |
4042 | case 'h': | |
f7077624 SH |
4043 | help(); |
4044 | break; | |
4045 | case 'o': | |
6d2b5cba | 4046 | if (accumulate_options(&options, optarg) < 0) { |
f7077624 SH |
4047 | ret = -1; |
4048 | goto out_no_progress; | |
4049 | } | |
f7077624 SH |
4050 | break; |
4051 | case 'f': | |
4052 | fmt = optarg; | |
4053 | break; | |
4054 | case 't': | |
4055 | cache = optarg; | |
4056 | break; | |
4057 | case 'p': | |
4058 | progress = true; | |
4059 | break; | |
4060 | case 'q': | |
4061 | quiet = true; | |
4062 | break; | |
4063 | case OPTION_OBJECT: | |
4064 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
4065 | optarg, true); | |
4066 | if (!opts) { | |
4067 | ret = -1; | |
4068 | goto out_no_progress; | |
4069 | } | |
4070 | break; | |
4071 | case OPTION_IMAGE_OPTS: | |
4072 | image_opts = true; | |
4073 | break; | |
6f176b48 HR |
4074 | } |
4075 | } | |
4076 | ||
a283cb6e | 4077 | if (!options) { |
ac1307ab | 4078 | error_exit("Must specify options (-o)"); |
6f176b48 HR |
4079 | } |
4080 | ||
3babeb15 DB |
4081 | if (qemu_opts_foreach(&qemu_object_opts, |
4082 | user_creatable_add_opts_foreach, | |
c6e5cdfd | 4083 | qemu_img_object_print_help, &error_fatal)) { |
3babeb15 DB |
4084 | ret = -1; |
4085 | goto out_no_progress; | |
4086 | } | |
4087 | ||
76a3a34d HR |
4088 | if (quiet) { |
4089 | progress = false; | |
4090 | } | |
4091 | qemu_progress_init(progress, 1.0); | |
4092 | ||
a283cb6e KW |
4093 | filename = (optind == argc - 1) ? argv[argc - 1] : NULL; |
4094 | if (fmt && has_help_option(options)) { | |
4095 | /* If a format is explicitly specified (and possibly no filename is | |
4096 | * given), print option help here */ | |
51641351 | 4097 | ret = print_amend_option_help(fmt); |
a283cb6e | 4098 | goto out; |
6f176b48 HR |
4099 | } |
4100 | ||
a283cb6e | 4101 | if (optind != argc - 1) { |
b2f27e44 HR |
4102 | error_report("Expecting one image file name"); |
4103 | ret = -1; | |
4104 | goto out; | |
a283cb6e | 4105 | } |
6f176b48 | 4106 | |
ce099547 KW |
4107 | flags = BDRV_O_RDWR; |
4108 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); | |
bd39e6ed HR |
4109 | if (ret < 0) { |
4110 | error_report("Invalid cache option: %s", cache); | |
4111 | goto out; | |
4112 | } | |
4113 | ||
335e9937 FZ |
4114 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet, |
4115 | false); | |
7e7d56d9 | 4116 | if (!blk) { |
6f176b48 HR |
4117 | ret = -1; |
4118 | goto out; | |
4119 | } | |
7e7d56d9 | 4120 | bs = blk_bs(blk); |
6f176b48 HR |
4121 | |
4122 | fmt = bs->drv->format_name; | |
4123 | ||
626f84f3 | 4124 | if (has_help_option(options)) { |
a283cb6e | 4125 | /* If the format was auto-detected, print option help here */ |
51641351 | 4126 | ret = print_amend_option_help(fmt); |
6f176b48 HR |
4127 | goto out; |
4128 | } | |
4129 | ||
1f996683 HR |
4130 | if (!bs->drv->bdrv_amend_options) { |
4131 | error_report("Format driver '%s' does not support option amendment", | |
b2439d26 HR |
4132 | fmt); |
4133 | ret = -1; | |
4134 | goto out; | |
4135 | } | |
4136 | ||
1f996683 HR |
4137 | /* Every driver supporting amendment must have create_opts */ |
4138 | assert(bs->drv->create_opts); | |
4139 | ||
c282e1fd | 4140 | create_opts = qemu_opts_append(create_opts, bs->drv->create_opts); |
83d0521a | 4141 | opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); |
ece9086e PB |
4142 | qemu_opts_do_parse(opts, options, NULL, &err); |
4143 | if (err) { | |
4144 | error_report_err(err); | |
4145 | ret = -1; | |
4146 | goto out; | |
6f176b48 HR |
4147 | } |
4148 | ||
76a3a34d HR |
4149 | /* In case the driver does not call amend_status_cb() */ |
4150 | qemu_progress_print(0.f, 0); | |
d1402b50 | 4151 | ret = bdrv_amend_options(bs, opts, &amend_status_cb, NULL, &err); |
76a3a34d | 4152 | qemu_progress_print(100.f, 0); |
6f176b48 | 4153 | if (ret < 0) { |
d1402b50 | 4154 | error_report_err(err); |
6f176b48 HR |
4155 | goto out; |
4156 | } | |
4157 | ||
4158 | out: | |
76a3a34d HR |
4159 | qemu_progress_end(); |
4160 | ||
e814dffc | 4161 | out_no_progress: |
26f54e9a | 4162 | blk_unref(blk); |
83d0521a CL |
4163 | qemu_opts_del(opts); |
4164 | qemu_opts_free(create_opts); | |
626f84f3 KW |
4165 | g_free(options); |
4166 | ||
6f176b48 HR |
4167 | if (ret) { |
4168 | return 1; | |
4169 | } | |
4170 | return 0; | |
4171 | } | |
4172 | ||
b6133b8c KW |
4173 | typedef struct BenchData { |
4174 | BlockBackend *blk; | |
4175 | uint64_t image_size; | |
b6495fa8 | 4176 | bool write; |
b6133b8c | 4177 | int bufsize; |
83de9be0 | 4178 | int step; |
b6133b8c KW |
4179 | int nrreq; |
4180 | int n; | |
55d539c8 KW |
4181 | int flush_interval; |
4182 | bool drain_on_flush; | |
b6133b8c KW |
4183 | uint8_t *buf; |
4184 | QEMUIOVector *qiov; | |
4185 | ||
4186 | int in_flight; | |
55d539c8 | 4187 | bool in_flush; |
b6133b8c KW |
4188 | uint64_t offset; |
4189 | } BenchData; | |
4190 | ||
55d539c8 KW |
4191 | static void bench_undrained_flush_cb(void *opaque, int ret) |
4192 | { | |
4193 | if (ret < 0) { | |
df3c286c | 4194 | error_report("Failed flush request: %s", strerror(-ret)); |
55d539c8 KW |
4195 | exit(EXIT_FAILURE); |
4196 | } | |
4197 | } | |
4198 | ||
b6133b8c KW |
4199 | static void bench_cb(void *opaque, int ret) |
4200 | { | |
4201 | BenchData *b = opaque; | |
4202 | BlockAIOCB *acb; | |
4203 | ||
4204 | if (ret < 0) { | |
df3c286c | 4205 | error_report("Failed request: %s", strerror(-ret)); |
b6133b8c KW |
4206 | exit(EXIT_FAILURE); |
4207 | } | |
55d539c8 KW |
4208 | |
4209 | if (b->in_flush) { | |
4210 | /* Just finished a flush with drained queue: Start next requests */ | |
4211 | assert(b->in_flight == 0); | |
4212 | b->in_flush = false; | |
4213 | } else if (b->in_flight > 0) { | |
4214 | int remaining = b->n - b->in_flight; | |
4215 | ||
b6133b8c KW |
4216 | b->n--; |
4217 | b->in_flight--; | |
55d539c8 KW |
4218 | |
4219 | /* Time for flush? Drain queue if requested, then flush */ | |
4220 | if (b->flush_interval && remaining % b->flush_interval == 0) { | |
4221 | if (!b->in_flight || !b->drain_on_flush) { | |
4222 | BlockCompletionFunc *cb; | |
4223 | ||
4224 | if (b->drain_on_flush) { | |
4225 | b->in_flush = true; | |
4226 | cb = bench_cb; | |
4227 | } else { | |
4228 | cb = bench_undrained_flush_cb; | |
4229 | } | |
4230 | ||
4231 | acb = blk_aio_flush(b->blk, cb, b); | |
4232 | if (!acb) { | |
4233 | error_report("Failed to issue flush request"); | |
4234 | exit(EXIT_FAILURE); | |
4235 | } | |
4236 | } | |
4237 | if (b->drain_on_flush) { | |
4238 | return; | |
4239 | } | |
4240 | } | |
b6133b8c KW |
4241 | } |
4242 | ||
4243 | while (b->n > b->in_flight && b->in_flight < b->nrreq) { | |
4baaa8c3 PB |
4244 | int64_t offset = b->offset; |
4245 | /* blk_aio_* might look for completed I/Os and kick bench_cb | |
4246 | * again, so make sure this operation is counted by in_flight | |
4247 | * and b->offset is ready for the next submission. | |
4248 | */ | |
4249 | b->in_flight++; | |
4250 | b->offset += b->step; | |
4251 | b->offset %= b->image_size; | |
b6495fa8 | 4252 | if (b->write) { |
4baaa8c3 | 4253 | acb = blk_aio_pwritev(b->blk, offset, b->qiov, 0, bench_cb, b); |
b6495fa8 | 4254 | } else { |
4baaa8c3 | 4255 | acb = blk_aio_preadv(b->blk, offset, b->qiov, 0, bench_cb, b); |
b6495fa8 | 4256 | } |
b6133b8c KW |
4257 | if (!acb) { |
4258 | error_report("Failed to issue request"); | |
4259 | exit(EXIT_FAILURE); | |
4260 | } | |
b6133b8c KW |
4261 | } |
4262 | } | |
4263 | ||
4264 | static int img_bench(int argc, char **argv) | |
4265 | { | |
4266 | int c, ret = 0; | |
4267 | const char *fmt = NULL, *filename; | |
4268 | bool quiet = false; | |
4269 | bool image_opts = false; | |
b6495fa8 | 4270 | bool is_write = false; |
b6133b8c KW |
4271 | int count = 75000; |
4272 | int depth = 64; | |
d3199a31 | 4273 | int64_t offset = 0; |
b6133b8c | 4274 | size_t bufsize = 4096; |
b6495fa8 | 4275 | int pattern = 0; |
83de9be0 | 4276 | size_t step = 0; |
55d539c8 KW |
4277 | int flush_interval = 0; |
4278 | bool drain_on_flush = true; | |
b6133b8c KW |
4279 | int64_t image_size; |
4280 | BlockBackend *blk = NULL; | |
4281 | BenchData data = {}; | |
4282 | int flags = 0; | |
604e8613 | 4283 | bool writethrough = false; |
b6133b8c KW |
4284 | struct timeval t1, t2; |
4285 | int i; | |
335e9937 | 4286 | bool force_share = false; |
79d46583 | 4287 | size_t buf_size; |
b6133b8c KW |
4288 | |
4289 | for (;;) { | |
4290 | static const struct option long_options[] = { | |
4291 | {"help", no_argument, 0, 'h'}, | |
55d539c8 | 4292 | {"flush-interval", required_argument, 0, OPTION_FLUSH_INTERVAL}, |
b6133b8c | 4293 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
b6495fa8 | 4294 | {"pattern", required_argument, 0, OPTION_PATTERN}, |
55d539c8 | 4295 | {"no-drain", no_argument, 0, OPTION_NO_DRAIN}, |
335e9937 | 4296 | {"force-share", no_argument, 0, 'U'}, |
b6133b8c KW |
4297 | {0, 0, 0, 0} |
4298 | }; | |
cdd26774 AM |
4299 | c = getopt_long(argc, argv, ":hc:d:f:ni:o:qs:S:t:wU", long_options, |
4300 | NULL); | |
b6133b8c KW |
4301 | if (c == -1) { |
4302 | break; | |
4303 | } | |
4304 | ||
4305 | switch (c) { | |
c9192973 SH |
4306 | case ':': |
4307 | missing_argument(argv[optind - 1]); | |
4308 | break; | |
b6133b8c | 4309 | case '?': |
c9192973 SH |
4310 | unrecognized_option(argv[optind - 1]); |
4311 | break; | |
4312 | case 'h': | |
b6133b8c KW |
4313 | help(); |
4314 | break; | |
4315 | case 'c': | |
4316 | { | |
8b3c6792 PM |
4317 | unsigned long res; |
4318 | ||
4319 | if (qemu_strtoul(optarg, NULL, 0, &res) < 0 || res > INT_MAX) { | |
b6133b8c KW |
4320 | error_report("Invalid request count specified"); |
4321 | return 1; | |
4322 | } | |
8b3c6792 | 4323 | count = res; |
b6133b8c KW |
4324 | break; |
4325 | } | |
4326 | case 'd': | |
4327 | { | |
8b3c6792 PM |
4328 | unsigned long res; |
4329 | ||
4330 | if (qemu_strtoul(optarg, NULL, 0, &res) < 0 || res > INT_MAX) { | |
b6133b8c KW |
4331 | error_report("Invalid queue depth specified"); |
4332 | return 1; | |
4333 | } | |
8b3c6792 | 4334 | depth = res; |
b6133b8c KW |
4335 | break; |
4336 | } | |
4337 | case 'f': | |
4338 | fmt = optarg; | |
4339 | break; | |
4340 | case 'n': | |
4341 | flags |= BDRV_O_NATIVE_AIO; | |
4342 | break; | |
cdd26774 AM |
4343 | case 'i': |
4344 | ret = bdrv_parse_aio(optarg, &flags); | |
4345 | if (ret < 0) { | |
4346 | error_report("Invalid aio option: %s", optarg); | |
4347 | ret = -1; | |
4348 | goto out; | |
4349 | } | |
4350 | break; | |
d3199a31 KW |
4351 | case 'o': |
4352 | { | |
43d589b0 | 4353 | offset = cvtnum("offset", optarg); |
606caa0a | 4354 | if (offset < 0) { |
d3199a31 KW |
4355 | return 1; |
4356 | } | |
4357 | break; | |
4358 | } | |
4359 | break; | |
b6133b8c KW |
4360 | case 'q': |
4361 | quiet = true; | |
4362 | break; | |
4363 | case 's': | |
4364 | { | |
4365 | int64_t sval; | |
b6133b8c | 4366 | |
43d589b0 EM |
4367 | sval = cvtnum_full("buffer size", optarg, 0, INT_MAX); |
4368 | if (sval < 0) { | |
b6133b8c KW |
4369 | return 1; |
4370 | } | |
4371 | ||
4372 | bufsize = sval; | |
4373 | break; | |
4374 | } | |
83de9be0 KW |
4375 | case 'S': |
4376 | { | |
4377 | int64_t sval; | |
83de9be0 | 4378 | |
43d589b0 EM |
4379 | sval = cvtnum_full("step_size", optarg, 0, INT_MAX); |
4380 | if (sval < 0) { | |
83de9be0 KW |
4381 | return 1; |
4382 | } | |
4383 | ||
4384 | step = sval; | |
4385 | break; | |
4386 | } | |
b6133b8c KW |
4387 | case 't': |
4388 | ret = bdrv_parse_cache_mode(optarg, &flags, &writethrough); | |
4389 | if (ret < 0) { | |
4390 | error_report("Invalid cache mode"); | |
4391 | ret = -1; | |
4392 | goto out; | |
4393 | } | |
4394 | break; | |
b6495fa8 KW |
4395 | case 'w': |
4396 | flags |= BDRV_O_RDWR; | |
4397 | is_write = true; | |
4398 | break; | |
335e9937 FZ |
4399 | case 'U': |
4400 | force_share = true; | |
4401 | break; | |
b6495fa8 KW |
4402 | case OPTION_PATTERN: |
4403 | { | |
8b3c6792 PM |
4404 | unsigned long res; |
4405 | ||
4406 | if (qemu_strtoul(optarg, NULL, 0, &res) < 0 || res > 0xff) { | |
b6495fa8 KW |
4407 | error_report("Invalid pattern byte specified"); |
4408 | return 1; | |
4409 | } | |
8b3c6792 | 4410 | pattern = res; |
b6495fa8 KW |
4411 | break; |
4412 | } | |
55d539c8 KW |
4413 | case OPTION_FLUSH_INTERVAL: |
4414 | { | |
8b3c6792 PM |
4415 | unsigned long res; |
4416 | ||
4417 | if (qemu_strtoul(optarg, NULL, 0, &res) < 0 || res > INT_MAX) { | |
55d539c8 KW |
4418 | error_report("Invalid flush interval specified"); |
4419 | return 1; | |
4420 | } | |
8b3c6792 | 4421 | flush_interval = res; |
55d539c8 KW |
4422 | break; |
4423 | } | |
4424 | case OPTION_NO_DRAIN: | |
4425 | drain_on_flush = false; | |
4426 | break; | |
b6133b8c KW |
4427 | case OPTION_IMAGE_OPTS: |
4428 | image_opts = true; | |
4429 | break; | |
4430 | } | |
4431 | } | |
4432 | ||
4433 | if (optind != argc - 1) { | |
4434 | error_exit("Expecting one image file name"); | |
4435 | } | |
4436 | filename = argv[argc - 1]; | |
4437 | ||
55d539c8 KW |
4438 | if (!is_write && flush_interval) { |
4439 | error_report("--flush-interval is only available in write tests"); | |
4440 | ret = -1; | |
4441 | goto out; | |
4442 | } | |
4443 | if (flush_interval && flush_interval < depth) { | |
4444 | error_report("Flush interval can't be smaller than depth"); | |
4445 | ret = -1; | |
4446 | goto out; | |
4447 | } | |
4448 | ||
335e9937 FZ |
4449 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet, |
4450 | force_share); | |
b6133b8c KW |
4451 | if (!blk) { |
4452 | ret = -1; | |
4453 | goto out; | |
4454 | } | |
4455 | ||
4456 | image_size = blk_getlength(blk); | |
4457 | if (image_size < 0) { | |
4458 | ret = image_size; | |
4459 | goto out; | |
4460 | } | |
4461 | ||
4462 | data = (BenchData) { | |
55d539c8 KW |
4463 | .blk = blk, |
4464 | .image_size = image_size, | |
4465 | .bufsize = bufsize, | |
4466 | .step = step ?: bufsize, | |
4467 | .nrreq = depth, | |
4468 | .n = count, | |
4469 | .offset = offset, | |
4470 | .write = is_write, | |
4471 | .flush_interval = flush_interval, | |
4472 | .drain_on_flush = drain_on_flush, | |
b6133b8c | 4473 | }; |
d3199a31 | 4474 | printf("Sending %d %s requests, %d bytes each, %d in parallel " |
83de9be0 | 4475 | "(starting at offset %" PRId64 ", step size %d)\n", |
d3199a31 | 4476 | data.n, data.write ? "write" : "read", data.bufsize, data.nrreq, |
83de9be0 | 4477 | data.offset, data.step); |
55d539c8 KW |
4478 | if (flush_interval) { |
4479 | printf("Sending flush every %d requests\n", flush_interval); | |
4480 | } | |
b6133b8c | 4481 | |
79d46583 FZ |
4482 | buf_size = data.nrreq * data.bufsize; |
4483 | data.buf = blk_blockalign(blk, buf_size); | |
b6495fa8 KW |
4484 | memset(data.buf, pattern, data.nrreq * data.bufsize); |
4485 | ||
79d46583 FZ |
4486 | blk_register_buf(blk, data.buf, buf_size); |
4487 | ||
b6133b8c KW |
4488 | data.qiov = g_new(QEMUIOVector, data.nrreq); |
4489 | for (i = 0; i < data.nrreq; i++) { | |
4490 | qemu_iovec_init(&data.qiov[i], 1); | |
4491 | qemu_iovec_add(&data.qiov[i], | |
4492 | data.buf + i * data.bufsize, data.bufsize); | |
4493 | } | |
4494 | ||
4495 | gettimeofday(&t1, NULL); | |
4496 | bench_cb(&data, 0); | |
4497 | ||
4498 | while (data.n > 0) { | |
4499 | main_loop_wait(false); | |
4500 | } | |
4501 | gettimeofday(&t2, NULL); | |
4502 | ||
4503 | printf("Run completed in %3.3f seconds.\n", | |
4504 | (t2.tv_sec - t1.tv_sec) | |
4505 | + ((double)(t2.tv_usec - t1.tv_usec) / 1000000)); | |
4506 | ||
4507 | out: | |
79d46583 FZ |
4508 | if (data.buf) { |
4509 | blk_unregister_buf(blk, data.buf); | |
4510 | } | |
b6133b8c KW |
4511 | qemu_vfree(data.buf); |
4512 | blk_unref(blk); | |
4513 | ||
4514 | if (ret) { | |
86ce1f6e RS |
4515 | return 1; |
4516 | } | |
4517 | return 0; | |
4518 | } | |
4519 | ||
3b51ab4b EB |
4520 | enum ImgBitmapAct { |
4521 | BITMAP_ADD, | |
4522 | BITMAP_REMOVE, | |
4523 | BITMAP_CLEAR, | |
4524 | BITMAP_ENABLE, | |
4525 | BITMAP_DISABLE, | |
4526 | BITMAP_MERGE, | |
4527 | }; | |
4528 | typedef struct ImgBitmapAction { | |
4529 | enum ImgBitmapAct act; | |
4530 | const char *src; /* only used for merge */ | |
4531 | QSIMPLEQ_ENTRY(ImgBitmapAction) next; | |
4532 | } ImgBitmapAction; | |
4533 | ||
4534 | static int img_bitmap(int argc, char **argv) | |
4535 | { | |
4536 | Error *err = NULL; | |
4537 | int c, ret = 1; | |
4538 | QemuOpts *opts = NULL; | |
4539 | const char *fmt = NULL, *src_fmt = NULL, *src_filename = NULL; | |
4540 | const char *filename, *bitmap; | |
4541 | BlockBackend *blk = NULL, *src = NULL; | |
4542 | BlockDriverState *bs = NULL, *src_bs = NULL; | |
4543 | bool image_opts = false; | |
4544 | int64_t granularity = 0; | |
4545 | bool add = false, merge = false; | |
4546 | QSIMPLEQ_HEAD(, ImgBitmapAction) actions; | |
4547 | ImgBitmapAction *act, *act_next; | |
4548 | const char *op; | |
4549 | ||
4550 | QSIMPLEQ_INIT(&actions); | |
4551 | ||
4552 | for (;;) { | |
4553 | static const struct option long_options[] = { | |
4554 | {"help", no_argument, 0, 'h'}, | |
4555 | {"object", required_argument, 0, OPTION_OBJECT}, | |
4556 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, | |
4557 | {"add", no_argument, 0, OPTION_ADD}, | |
4558 | {"remove", no_argument, 0, OPTION_REMOVE}, | |
4559 | {"clear", no_argument, 0, OPTION_CLEAR}, | |
4560 | {"enable", no_argument, 0, OPTION_ENABLE}, | |
4561 | {"disable", no_argument, 0, OPTION_DISABLE}, | |
4562 | {"merge", required_argument, 0, OPTION_MERGE}, | |
4563 | {"granularity", required_argument, 0, 'g'}, | |
4564 | {"source-file", required_argument, 0, 'b'}, | |
4565 | {"source-format", required_argument, 0, 'F'}, | |
4566 | {0, 0, 0, 0} | |
4567 | }; | |
4568 | c = getopt_long(argc, argv, ":b:f:F:g:h", long_options, NULL); | |
4569 | if (c == -1) { | |
4570 | break; | |
4571 | } | |
4572 | ||
4573 | switch (c) { | |
4574 | case ':': | |
4575 | missing_argument(argv[optind - 1]); | |
4576 | break; | |
4577 | case '?': | |
4578 | unrecognized_option(argv[optind - 1]); | |
4579 | break; | |
4580 | case 'h': | |
4581 | help(); | |
4582 | break; | |
4583 | case 'b': | |
4584 | src_filename = optarg; | |
4585 | break; | |
4586 | case 'f': | |
4587 | fmt = optarg; | |
4588 | break; | |
4589 | case 'F': | |
4590 | src_fmt = optarg; | |
4591 | break; | |
4592 | case 'g': | |
4593 | granularity = cvtnum("granularity", optarg); | |
4594 | if (granularity < 0) { | |
4595 | return 1; | |
4596 | } | |
4597 | break; | |
4598 | case OPTION_ADD: | |
4599 | act = g_new0(ImgBitmapAction, 1); | |
4600 | act->act = BITMAP_ADD; | |
4601 | QSIMPLEQ_INSERT_TAIL(&actions, act, next); | |
4602 | add = true; | |
4603 | break; | |
4604 | case OPTION_REMOVE: | |
4605 | act = g_new0(ImgBitmapAction, 1); | |
4606 | act->act = BITMAP_REMOVE; | |
4607 | QSIMPLEQ_INSERT_TAIL(&actions, act, next); | |
4608 | break; | |
4609 | case OPTION_CLEAR: | |
4610 | act = g_new0(ImgBitmapAction, 1); | |
4611 | act->act = BITMAP_CLEAR; | |
4612 | QSIMPLEQ_INSERT_TAIL(&actions, act, next); | |
4613 | break; | |
4614 | case OPTION_ENABLE: | |
4615 | act = g_new0(ImgBitmapAction, 1); | |
4616 | act->act = BITMAP_ENABLE; | |
4617 | QSIMPLEQ_INSERT_TAIL(&actions, act, next); | |
4618 | break; | |
4619 | case OPTION_DISABLE: | |
4620 | act = g_new0(ImgBitmapAction, 1); | |
4621 | act->act = BITMAP_DISABLE; | |
4622 | QSIMPLEQ_INSERT_TAIL(&actions, act, next); | |
4623 | break; | |
4624 | case OPTION_MERGE: | |
4625 | act = g_new0(ImgBitmapAction, 1); | |
4626 | act->act = BITMAP_MERGE; | |
4627 | act->src = optarg; | |
4628 | QSIMPLEQ_INSERT_TAIL(&actions, act, next); | |
4629 | merge = true; | |
4630 | break; | |
4631 | case OPTION_OBJECT: | |
4632 | opts = qemu_opts_parse_noisily(&qemu_object_opts, optarg, true); | |
4633 | if (!opts) { | |
4634 | goto out; | |
4635 | } | |
4636 | break; | |
4637 | case OPTION_IMAGE_OPTS: | |
4638 | image_opts = true; | |
4639 | break; | |
4640 | } | |
4641 | } | |
4642 | ||
4643 | if (qemu_opts_foreach(&qemu_object_opts, | |
4644 | user_creatable_add_opts_foreach, | |
4645 | qemu_img_object_print_help, &error_fatal)) { | |
4646 | goto out; | |
4647 | } | |
4648 | ||
4649 | if (QSIMPLEQ_EMPTY(&actions)) { | |
4650 | error_report("Need at least one of --add, --remove, --clear, " | |
4651 | "--enable, --disable, or --merge"); | |
4652 | goto out; | |
4653 | } | |
4654 | ||
4655 | if (granularity && !add) { | |
4656 | error_report("granularity only supported with --add"); | |
4657 | goto out; | |
4658 | } | |
4659 | if (src_fmt && !src_filename) { | |
4660 | error_report("-F only supported with -b"); | |
4661 | goto out; | |
4662 | } | |
4663 | if (src_filename && !merge) { | |
4664 | error_report("Merge bitmap source file only supported with " | |
4665 | "--merge"); | |
4666 | goto out; | |
4667 | } | |
4668 | ||
4669 | if (optind != argc - 2) { | |
4670 | error_report("Expecting filename and bitmap name"); | |
4671 | goto out; | |
4672 | } | |
4673 | ||
4674 | filename = argv[optind]; | |
4675 | bitmap = argv[optind + 1]; | |
4676 | ||
4677 | blk = img_open(image_opts, filename, fmt, BDRV_O_RDWR, false, false, | |
4678 | false); | |
4679 | if (!blk) { | |
4680 | goto out; | |
4681 | } | |
4682 | bs = blk_bs(blk); | |
4683 | if (src_filename) { | |
4684 | src = img_open(false, src_filename, src_fmt, 0, false, false, false); | |
4685 | if (!src) { | |
4686 | goto out; | |
4687 | } | |
4688 | src_bs = blk_bs(src); | |
4689 | } else { | |
4690 | src_bs = bs; | |
4691 | } | |
4692 | ||
4693 | QSIMPLEQ_FOREACH_SAFE(act, &actions, next, act_next) { | |
4694 | switch (act->act) { | |
4695 | case BITMAP_ADD: | |
4696 | qmp_block_dirty_bitmap_add(bs->node_name, bitmap, | |
4697 | !!granularity, granularity, true, true, | |
4698 | false, false, &err); | |
4699 | op = "add"; | |
4700 | break; | |
4701 | case BITMAP_REMOVE: | |
4702 | qmp_block_dirty_bitmap_remove(bs->node_name, bitmap, &err); | |
4703 | op = "remove"; | |
4704 | break; | |
4705 | case BITMAP_CLEAR: | |
4706 | qmp_block_dirty_bitmap_clear(bs->node_name, bitmap, &err); | |
4707 | op = "clear"; | |
4708 | break; | |
4709 | case BITMAP_ENABLE: | |
4710 | qmp_block_dirty_bitmap_enable(bs->node_name, bitmap, &err); | |
4711 | op = "enable"; | |
4712 | break; | |
4713 | case BITMAP_DISABLE: | |
4714 | qmp_block_dirty_bitmap_disable(bs->node_name, bitmap, &err); | |
4715 | op = "disable"; | |
4716 | break; | |
4717 | case BITMAP_MERGE: { | |
4718 | BlockDirtyBitmapMergeSource *merge_src; | |
4719 | BlockDirtyBitmapMergeSourceList *list; | |
4720 | ||
4721 | merge_src = g_new0(BlockDirtyBitmapMergeSource, 1); | |
4722 | merge_src->type = QTYPE_QDICT; | |
4723 | merge_src->u.external.node = g_strdup(src_bs->node_name); | |
4724 | merge_src->u.external.name = g_strdup(act->src); | |
4725 | list = g_new0(BlockDirtyBitmapMergeSourceList, 1); | |
4726 | list->value = merge_src; | |
4727 | qmp_block_dirty_bitmap_merge(bs->node_name, bitmap, list, &err); | |
4728 | qapi_free_BlockDirtyBitmapMergeSourceList(list); | |
4729 | op = "merge"; | |
4730 | break; | |
4731 | } | |
4732 | default: | |
4733 | g_assert_not_reached(); | |
4734 | } | |
4735 | ||
4736 | if (err) { | |
4737 | error_reportf_err(err, "Operation %s on bitmap %s failed: ", | |
4738 | op, bitmap); | |
4739 | goto out; | |
4740 | } | |
4741 | g_free(act); | |
4742 | } | |
4743 | ||
4744 | ret = 0; | |
4745 | ||
4746 | out: | |
4747 | blk_unref(src); | |
4748 | blk_unref(blk); | |
4749 | qemu_opts_del(opts); | |
4750 | return ret; | |
4751 | } | |
4752 | ||
86ce1f6e RS |
4753 | #define C_BS 01 |
4754 | #define C_COUNT 02 | |
4755 | #define C_IF 04 | |
4756 | #define C_OF 010 | |
f7c15533 | 4757 | #define C_SKIP 020 |
86ce1f6e RS |
4758 | |
4759 | struct DdInfo { | |
4760 | unsigned int flags; | |
4761 | int64_t count; | |
4762 | }; | |
4763 | ||
4764 | struct DdIo { | |
4765 | int bsz; /* Block size */ | |
4766 | char *filename; | |
4767 | uint8_t *buf; | |
f7c15533 | 4768 | int64_t offset; |
86ce1f6e RS |
4769 | }; |
4770 | ||
4771 | struct DdOpts { | |
4772 | const char *name; | |
4773 | int (*f)(const char *, struct DdIo *, struct DdIo *, struct DdInfo *); | |
4774 | unsigned int flag; | |
4775 | }; | |
4776 | ||
4777 | static int img_dd_bs(const char *arg, | |
4778 | struct DdIo *in, struct DdIo *out, | |
4779 | struct DdInfo *dd) | |
4780 | { | |
86ce1f6e RS |
4781 | int64_t res; |
4782 | ||
43d589b0 | 4783 | res = cvtnum_full("bs", arg, 1, INT_MAX); |
86ce1f6e | 4784 | |
43d589b0 | 4785 | if (res < 0) { |
86ce1f6e RS |
4786 | return 1; |
4787 | } | |
4788 | in->bsz = out->bsz = res; | |
4789 | ||
4790 | return 0; | |
4791 | } | |
4792 | ||
4793 | static int img_dd_count(const char *arg, | |
4794 | struct DdIo *in, struct DdIo *out, | |
4795 | struct DdInfo *dd) | |
4796 | { | |
43d589b0 | 4797 | dd->count = cvtnum("count", arg); |
86ce1f6e | 4798 | |
606caa0a | 4799 | if (dd->count < 0) { |
86ce1f6e RS |
4800 | return 1; |
4801 | } | |
4802 | ||
4803 | return 0; | |
4804 | } | |
4805 | ||
4806 | static int img_dd_if(const char *arg, | |
4807 | struct DdIo *in, struct DdIo *out, | |
4808 | struct DdInfo *dd) | |
4809 | { | |
4810 | in->filename = g_strdup(arg); | |
4811 | ||
4812 | return 0; | |
4813 | } | |
4814 | ||
4815 | static int img_dd_of(const char *arg, | |
4816 | struct DdIo *in, struct DdIo *out, | |
4817 | struct DdInfo *dd) | |
4818 | { | |
4819 | out->filename = g_strdup(arg); | |
4820 | ||
4821 | return 0; | |
4822 | } | |
4823 | ||
f7c15533 RS |
4824 | static int img_dd_skip(const char *arg, |
4825 | struct DdIo *in, struct DdIo *out, | |
4826 | struct DdInfo *dd) | |
4827 | { | |
43d589b0 | 4828 | in->offset = cvtnum("skip", arg); |
f7c15533 | 4829 | |
606caa0a | 4830 | if (in->offset < 0) { |
f7c15533 RS |
4831 | return 1; |
4832 | } | |
4833 | ||
4834 | return 0; | |
4835 | } | |
4836 | ||
86ce1f6e RS |
4837 | static int img_dd(int argc, char **argv) |
4838 | { | |
4839 | int ret = 0; | |
4840 | char *arg = NULL; | |
4841 | char *tmp; | |
4842 | BlockDriver *drv = NULL, *proto_drv = NULL; | |
4843 | BlockBackend *blk1 = NULL, *blk2 = NULL; | |
4844 | QemuOpts *opts = NULL; | |
4845 | QemuOptsList *create_opts = NULL; | |
4846 | Error *local_err = NULL; | |
4847 | bool image_opts = false; | |
4848 | int c, i; | |
4849 | const char *out_fmt = "raw"; | |
4850 | const char *fmt = NULL; | |
4851 | int64_t size = 0; | |
4852 | int64_t block_count = 0, out_pos, in_pos; | |
335e9937 | 4853 | bool force_share = false; |
86ce1f6e RS |
4854 | struct DdInfo dd = { |
4855 | .flags = 0, | |
4856 | .count = 0, | |
4857 | }; | |
4858 | struct DdIo in = { | |
4859 | .bsz = 512, /* Block size is by default 512 bytes */ | |
4860 | .filename = NULL, | |
f7c15533 RS |
4861 | .buf = NULL, |
4862 | .offset = 0 | |
86ce1f6e RS |
4863 | }; |
4864 | struct DdIo out = { | |
4865 | .bsz = 512, | |
4866 | .filename = NULL, | |
f7c15533 RS |
4867 | .buf = NULL, |
4868 | .offset = 0 | |
86ce1f6e RS |
4869 | }; |
4870 | ||
4871 | const struct DdOpts options[] = { | |
4872 | { "bs", img_dd_bs, C_BS }, | |
4873 | { "count", img_dd_count, C_COUNT }, | |
4874 | { "if", img_dd_if, C_IF }, | |
4875 | { "of", img_dd_of, C_OF }, | |
f7c15533 | 4876 | { "skip", img_dd_skip, C_SKIP }, |
86ce1f6e RS |
4877 | { NULL, NULL, 0 } |
4878 | }; | |
4879 | const struct option long_options[] = { | |
4880 | { "help", no_argument, 0, 'h'}, | |
83d4bf94 | 4881 | { "object", required_argument, 0, OPTION_OBJECT}, |
86ce1f6e | 4882 | { "image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
335e9937 | 4883 | { "force-share", no_argument, 0, 'U'}, |
86ce1f6e RS |
4884 | { 0, 0, 0, 0 } |
4885 | }; | |
4886 | ||
335e9937 | 4887 | while ((c = getopt_long(argc, argv, ":hf:O:U", long_options, NULL))) { |
86ce1f6e RS |
4888 | if (c == EOF) { |
4889 | break; | |
4890 | } | |
4891 | switch (c) { | |
4892 | case 'O': | |
4893 | out_fmt = optarg; | |
4894 | break; | |
4895 | case 'f': | |
4896 | fmt = optarg; | |
4897 | break; | |
c9192973 SH |
4898 | case ':': |
4899 | missing_argument(argv[optind - 1]); | |
4900 | break; | |
86ce1f6e | 4901 | case '?': |
c9192973 SH |
4902 | unrecognized_option(argv[optind - 1]); |
4903 | break; | |
86ce1f6e RS |
4904 | case 'h': |
4905 | help(); | |
4906 | break; | |
335e9937 FZ |
4907 | case 'U': |
4908 | force_share = true; | |
4909 | break; | |
2a245709 SH |
4910 | case OPTION_OBJECT: |
4911 | if (!qemu_opts_parse_noisily(&qemu_object_opts, optarg, true)) { | |
83d4bf94 DB |
4912 | ret = -1; |
4913 | goto out; | |
4914 | } | |
2a245709 | 4915 | break; |
86ce1f6e RS |
4916 | case OPTION_IMAGE_OPTS: |
4917 | image_opts = true; | |
4918 | break; | |
4919 | } | |
4920 | } | |
4921 | ||
4922 | for (i = optind; i < argc; i++) { | |
4923 | int j; | |
4924 | arg = g_strdup(argv[i]); | |
4925 | ||
4926 | tmp = strchr(arg, '='); | |
4927 | if (tmp == NULL) { | |
4928 | error_report("unrecognized operand %s", arg); | |
4929 | ret = -1; | |
4930 | goto out; | |
4931 | } | |
4932 | ||
4933 | *tmp++ = '\0'; | |
4934 | ||
4935 | for (j = 0; options[j].name != NULL; j++) { | |
4936 | if (!strcmp(arg, options[j].name)) { | |
4937 | break; | |
4938 | } | |
4939 | } | |
4940 | if (options[j].name == NULL) { | |
4941 | error_report("unrecognized operand %s", arg); | |
4942 | ret = -1; | |
4943 | goto out; | |
4944 | } | |
4945 | ||
4946 | if (options[j].f(tmp, &in, &out, &dd) != 0) { | |
4947 | ret = -1; | |
4948 | goto out; | |
4949 | } | |
4950 | dd.flags |= options[j].flag; | |
4951 | g_free(arg); | |
4952 | arg = NULL; | |
4953 | } | |
4954 | ||
4955 | if (!(dd.flags & C_IF && dd.flags & C_OF)) { | |
4956 | error_report("Must specify both input and output files"); | |
4957 | ret = -1; | |
4958 | goto out; | |
4959 | } | |
83d4bf94 DB |
4960 | |
4961 | if (qemu_opts_foreach(&qemu_object_opts, | |
4962 | user_creatable_add_opts_foreach, | |
c6e5cdfd | 4963 | qemu_img_object_print_help, &error_fatal)) { |
83d4bf94 DB |
4964 | ret = -1; |
4965 | goto out; | |
4966 | } | |
4967 | ||
335e9937 FZ |
4968 | blk1 = img_open(image_opts, in.filename, fmt, 0, false, false, |
4969 | force_share); | |
86ce1f6e RS |
4970 | |
4971 | if (!blk1) { | |
4972 | ret = -1; | |
4973 | goto out; | |
4974 | } | |
4975 | ||
4976 | drv = bdrv_find_format(out_fmt); | |
4977 | if (!drv) { | |
4978 | error_report("Unknown file format"); | |
4979 | ret = -1; | |
4980 | goto out; | |
4981 | } | |
4982 | proto_drv = bdrv_find_protocol(out.filename, true, &local_err); | |
4983 | ||
4984 | if (!proto_drv) { | |
4985 | error_report_err(local_err); | |
4986 | ret = -1; | |
4987 | goto out; | |
4988 | } | |
4989 | if (!drv->create_opts) { | |
4990 | error_report("Format driver '%s' does not support image creation", | |
4991 | drv->format_name); | |
4992 | ret = -1; | |
4993 | goto out; | |
4994 | } | |
4995 | if (!proto_drv->create_opts) { | |
4996 | error_report("Protocol driver '%s' does not support image creation", | |
4997 | proto_drv->format_name); | |
4998 | ret = -1; | |
4999 | goto out; | |
5000 | } | |
5001 | create_opts = qemu_opts_append(create_opts, drv->create_opts); | |
5002 | create_opts = qemu_opts_append(create_opts, proto_drv->create_opts); | |
5003 | ||
5004 | opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); | |
5005 | ||
5006 | size = blk_getlength(blk1); | |
5007 | if (size < 0) { | |
5008 | error_report("Failed to get size for '%s'", in.filename); | |
5009 | ret = -1; | |
5010 | goto out; | |
5011 | } | |
5012 | ||
5013 | if (dd.flags & C_COUNT && dd.count <= INT64_MAX / in.bsz && | |
5014 | dd.count * in.bsz < size) { | |
5015 | size = dd.count * in.bsz; | |
5016 | } | |
5017 | ||
f7c15533 RS |
5018 | /* Overflow means the specified offset is beyond input image's size */ |
5019 | if (dd.flags & C_SKIP && (in.offset > INT64_MAX / in.bsz || | |
5020 | size < in.bsz * in.offset)) { | |
5021 | qemu_opt_set_number(opts, BLOCK_OPT_SIZE, 0, &error_abort); | |
5022 | } else { | |
5023 | qemu_opt_set_number(opts, BLOCK_OPT_SIZE, | |
5024 | size - in.bsz * in.offset, &error_abort); | |
5025 | } | |
86ce1f6e RS |
5026 | |
5027 | ret = bdrv_create(drv, out.filename, opts, &local_err); | |
5028 | if (ret < 0) { | |
5029 | error_reportf_err(local_err, | |
5030 | "%s: error while creating output image: ", | |
5031 | out.filename); | |
5032 | ret = -1; | |
5033 | goto out; | |
5034 | } | |
5035 | ||
ea204dda DB |
5036 | /* TODO, we can't honour --image-opts for the target, |
5037 | * since it needs to be given in a format compatible | |
5038 | * with the bdrv_create() call above which does not | |
5039 | * support image-opts style. | |
5040 | */ | |
29cf9336 | 5041 | blk2 = img_open_file(out.filename, NULL, out_fmt, BDRV_O_RDWR, |
ea204dda | 5042 | false, false, false); |
86ce1f6e RS |
5043 | |
5044 | if (!blk2) { | |
5045 | ret = -1; | |
5046 | goto out; | |
5047 | } | |
5048 | ||
f7c15533 RS |
5049 | if (dd.flags & C_SKIP && (in.offset > INT64_MAX / in.bsz || |
5050 | size < in.offset * in.bsz)) { | |
5051 | /* We give a warning if the skip option is bigger than the input | |
5052 | * size and create an empty output disk image (i.e. like dd(1)). | |
5053 | */ | |
5054 | error_report("%s: cannot skip to specified offset", in.filename); | |
5055 | in_pos = size; | |
5056 | } else { | |
5057 | in_pos = in.offset * in.bsz; | |
5058 | } | |
5059 | ||
86ce1f6e RS |
5060 | in.buf = g_new(uint8_t, in.bsz); |
5061 | ||
f7c15533 | 5062 | for (out_pos = 0; in_pos < size; block_count++) { |
86ce1f6e RS |
5063 | int in_ret, out_ret; |
5064 | ||
5065 | if (in_pos + in.bsz > size) { | |
5066 | in_ret = blk_pread(blk1, in_pos, in.buf, size - in_pos); | |
5067 | } else { | |
5068 | in_ret = blk_pread(blk1, in_pos, in.buf, in.bsz); | |
5069 | } | |
5070 | if (in_ret < 0) { | |
5071 | error_report("error while reading from input image file: %s", | |
5072 | strerror(-in_ret)); | |
5073 | ret = -1; | |
5074 | goto out; | |
5075 | } | |
5076 | in_pos += in_ret; | |
5077 | ||
5078 | out_ret = blk_pwrite(blk2, out_pos, in.buf, in_ret, 0); | |
5079 | ||
5080 | if (out_ret < 0) { | |
5081 | error_report("error while writing to output image file: %s", | |
5082 | strerror(-out_ret)); | |
5083 | ret = -1; | |
5084 | goto out; | |
5085 | } | |
5086 | out_pos += out_ret; | |
5087 | } | |
5088 | ||
5089 | out: | |
5090 | g_free(arg); | |
5091 | qemu_opts_del(opts); | |
5092 | qemu_opts_free(create_opts); | |
5093 | blk_unref(blk1); | |
5094 | blk_unref(blk2); | |
5095 | g_free(in.filename); | |
5096 | g_free(out.filename); | |
5097 | g_free(in.buf); | |
5098 | g_free(out.buf); | |
5099 | ||
5100 | if (ret) { | |
b6133b8c KW |
5101 | return 1; |
5102 | } | |
5103 | return 0; | |
5104 | } | |
5105 | ||
fd03c2b8 SH |
5106 | static void dump_json_block_measure_info(BlockMeasureInfo *info) |
5107 | { | |
5108 | QString *str; | |
5109 | QObject *obj; | |
5110 | Visitor *v = qobject_output_visitor_new(&obj); | |
5111 | ||
5112 | visit_type_BlockMeasureInfo(v, NULL, &info, &error_abort); | |
5113 | visit_complete(v, &obj); | |
5114 | str = qobject_to_json_pretty(obj); | |
5115 | assert(str != NULL); | |
5116 | printf("%s\n", qstring_get_str(str)); | |
cb3e7f08 | 5117 | qobject_unref(obj); |
fd03c2b8 | 5118 | visit_free(v); |
cb3e7f08 | 5119 | qobject_unref(str); |
fd03c2b8 SH |
5120 | } |
5121 | ||
5122 | static int img_measure(int argc, char **argv) | |
5123 | { | |
5124 | static const struct option long_options[] = { | |
5125 | {"help", no_argument, 0, 'h'}, | |
5126 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, | |
5127 | {"object", required_argument, 0, OPTION_OBJECT}, | |
5128 | {"output", required_argument, 0, OPTION_OUTPUT}, | |
5129 | {"size", required_argument, 0, OPTION_SIZE}, | |
5130 | {"force-share", no_argument, 0, 'U'}, | |
5131 | {0, 0, 0, 0} | |
5132 | }; | |
5133 | OutputFormat output_format = OFORMAT_HUMAN; | |
5134 | BlockBackend *in_blk = NULL; | |
5135 | BlockDriver *drv; | |
5136 | const char *filename = NULL; | |
5137 | const char *fmt = NULL; | |
5138 | const char *out_fmt = "raw"; | |
5139 | char *options = NULL; | |
5140 | char *snapshot_name = NULL; | |
5141 | bool force_share = false; | |
5142 | QemuOpts *opts = NULL; | |
5143 | QemuOpts *object_opts = NULL; | |
5144 | QemuOpts *sn_opts = NULL; | |
5145 | QemuOptsList *create_opts = NULL; | |
5146 | bool image_opts = false; | |
5147 | uint64_t img_size = UINT64_MAX; | |
5148 | BlockMeasureInfo *info = NULL; | |
5149 | Error *local_err = NULL; | |
5150 | int ret = 1; | |
5151 | int c; | |
5152 | ||
5153 | while ((c = getopt_long(argc, argv, "hf:O:o:l:U", | |
5154 | long_options, NULL)) != -1) { | |
5155 | switch (c) { | |
5156 | case '?': | |
5157 | case 'h': | |
5158 | help(); | |
5159 | break; | |
5160 | case 'f': | |
5161 | fmt = optarg; | |
5162 | break; | |
5163 | case 'O': | |
5164 | out_fmt = optarg; | |
5165 | break; | |
5166 | case 'o': | |
6d2b5cba | 5167 | if (accumulate_options(&options, optarg) < 0) { |
fd03c2b8 SH |
5168 | goto out; |
5169 | } | |
fd03c2b8 SH |
5170 | break; |
5171 | case 'l': | |
5172 | if (strstart(optarg, SNAPSHOT_OPT_BASE, NULL)) { | |
5173 | sn_opts = qemu_opts_parse_noisily(&internal_snapshot_opts, | |
5174 | optarg, false); | |
5175 | if (!sn_opts) { | |
5176 | error_report("Failed in parsing snapshot param '%s'", | |
5177 | optarg); | |
5178 | goto out; | |
5179 | } | |
5180 | } else { | |
5181 | snapshot_name = optarg; | |
5182 | } | |
5183 | break; | |
5184 | case 'U': | |
5185 | force_share = true; | |
5186 | break; | |
5187 | case OPTION_OBJECT: | |
5188 | object_opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
5189 | optarg, true); | |
5190 | if (!object_opts) { | |
5191 | goto out; | |
5192 | } | |
5193 | break; | |
5194 | case OPTION_IMAGE_OPTS: | |
5195 | image_opts = true; | |
5196 | break; | |
5197 | case OPTION_OUTPUT: | |
5198 | if (!strcmp(optarg, "json")) { | |
5199 | output_format = OFORMAT_JSON; | |
5200 | } else if (!strcmp(optarg, "human")) { | |
5201 | output_format = OFORMAT_HUMAN; | |
5202 | } else { | |
5203 | error_report("--output must be used with human or json " | |
5204 | "as argument."); | |
5205 | goto out; | |
5206 | } | |
5207 | break; | |
5208 | case OPTION_SIZE: | |
5209 | { | |
5210 | int64_t sval; | |
5211 | ||
43d589b0 | 5212 | sval = cvtnum("image size", optarg); |
fd03c2b8 | 5213 | if (sval < 0) { |
fd03c2b8 SH |
5214 | goto out; |
5215 | } | |
5216 | img_size = (uint64_t)sval; | |
5217 | } | |
5218 | break; | |
5219 | } | |
5220 | } | |
5221 | ||
5222 | if (qemu_opts_foreach(&qemu_object_opts, | |
5223 | user_creatable_add_opts_foreach, | |
c6e5cdfd | 5224 | qemu_img_object_print_help, &error_fatal)) { |
fd03c2b8 SH |
5225 | goto out; |
5226 | } | |
5227 | ||
5228 | if (argc - optind > 1) { | |
5229 | error_report("At most one filename argument is allowed."); | |
5230 | goto out; | |
5231 | } else if (argc - optind == 1) { | |
5232 | filename = argv[optind]; | |
5233 | } | |
5234 | ||
c3673dcf SH |
5235 | if (!filename && (image_opts || fmt || snapshot_name || sn_opts)) { |
5236 | error_report("--image-opts, -f, and -l require a filename argument."); | |
fd03c2b8 SH |
5237 | goto out; |
5238 | } | |
5239 | if (filename && img_size != UINT64_MAX) { | |
5240 | error_report("--size N cannot be used together with a filename."); | |
5241 | goto out; | |
5242 | } | |
5243 | if (!filename && img_size == UINT64_MAX) { | |
5244 | error_report("Either --size N or one filename must be specified."); | |
5245 | goto out; | |
5246 | } | |
5247 | ||
5248 | if (filename) { | |
5249 | in_blk = img_open(image_opts, filename, fmt, 0, | |
5250 | false, false, force_share); | |
5251 | if (!in_blk) { | |
5252 | goto out; | |
5253 | } | |
5254 | ||
5255 | if (sn_opts) { | |
5256 | bdrv_snapshot_load_tmp(blk_bs(in_blk), | |
5257 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_ID), | |
5258 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_NAME), | |
5259 | &local_err); | |
5260 | } else if (snapshot_name != NULL) { | |
5261 | bdrv_snapshot_load_tmp_by_id_or_name(blk_bs(in_blk), | |
5262 | snapshot_name, &local_err); | |
5263 | } | |
5264 | if (local_err) { | |
5265 | error_reportf_err(local_err, "Failed to load snapshot: "); | |
5266 | goto out; | |
5267 | } | |
5268 | } | |
5269 | ||
5270 | drv = bdrv_find_format(out_fmt); | |
5271 | if (!drv) { | |
5272 | error_report("Unknown file format '%s'", out_fmt); | |
5273 | goto out; | |
5274 | } | |
5275 | if (!drv->create_opts) { | |
5276 | error_report("Format driver '%s' does not support image creation", | |
5277 | drv->format_name); | |
5278 | goto out; | |
5279 | } | |
5280 | ||
5281 | create_opts = qemu_opts_append(create_opts, drv->create_opts); | |
5282 | create_opts = qemu_opts_append(create_opts, bdrv_file.create_opts); | |
5283 | opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); | |
5284 | if (options) { | |
5285 | qemu_opts_do_parse(opts, options, NULL, &local_err); | |
5286 | if (local_err) { | |
5287 | error_report_err(local_err); | |
5288 | error_report("Invalid options for file format '%s'", out_fmt); | |
5289 | goto out; | |
5290 | } | |
5291 | } | |
5292 | if (img_size != UINT64_MAX) { | |
5293 | qemu_opt_set_number(opts, BLOCK_OPT_SIZE, img_size, &error_abort); | |
5294 | } | |
5295 | ||
5296 | info = bdrv_measure(drv, opts, in_blk ? blk_bs(in_blk) : NULL, &local_err); | |
5297 | if (local_err) { | |
5298 | error_report_err(local_err); | |
5299 | goto out; | |
5300 | } | |
5301 | ||
5302 | if (output_format == OFORMAT_HUMAN) { | |
5303 | printf("required size: %" PRIu64 "\n", info->required); | |
5304 | printf("fully allocated size: %" PRIu64 "\n", info->fully_allocated); | |
5305 | } else { | |
5306 | dump_json_block_measure_info(info); | |
5307 | } | |
5308 | ||
5309 | ret = 0; | |
5310 | ||
5311 | out: | |
5312 | qapi_free_BlockMeasureInfo(info); | |
5313 | qemu_opts_del(object_opts); | |
5314 | qemu_opts_del(opts); | |
5315 | qemu_opts_del(sn_opts); | |
5316 | qemu_opts_free(create_opts); | |
5317 | g_free(options); | |
5318 | blk_unref(in_blk); | |
5319 | return ret; | |
5320 | } | |
b6133b8c | 5321 | |
c227f099 | 5322 | static const img_cmd_t img_cmds[] = { |
153859be SB |
5323 | #define DEF(option, callback, arg_string) \ |
5324 | { option, callback }, | |
5325 | #include "qemu-img-cmds.h" | |
5326 | #undef DEF | |
153859be SB |
5327 | { NULL, NULL, }, |
5328 | }; | |
5329 | ||
ea2384d3 FB |
5330 | int main(int argc, char **argv) |
5331 | { | |
c227f099 | 5332 | const img_cmd_t *cmd; |
153859be | 5333 | const char *cmdname; |
2f78e491 | 5334 | Error *local_error = NULL; |
06a1e0c1 | 5335 | char *trace_file = NULL; |
7db1689c | 5336 | int c; |
7db1689c JC |
5337 | static const struct option long_options[] = { |
5338 | {"help", no_argument, 0, 'h'}, | |
10985131 | 5339 | {"version", no_argument, 0, 'V'}, |
06a1e0c1 | 5340 | {"trace", required_argument, NULL, 'T'}, |
7db1689c JC |
5341 | {0, 0, 0, 0} |
5342 | }; | |
ea2384d3 | 5343 | |
526eda14 MK |
5344 | #ifdef CONFIG_POSIX |
5345 | signal(SIGPIPE, SIG_IGN); | |
5346 | #endif | |
5347 | ||
f5852efa | 5348 | error_init(argv[0]); |
fe4db84d | 5349 | module_call_init(MODULE_INIT_TRACE); |
10f5bff6 | 5350 | qemu_init_exec_dir(argv[0]); |
53f76e58 | 5351 | |
2f78e491 | 5352 | if (qemu_init_main_loop(&local_error)) { |
565f65d2 | 5353 | error_report_err(local_error); |
2f78e491 CN |
5354 | exit(EXIT_FAILURE); |
5355 | } | |
5356 | ||
e8f2d272 | 5357 | qcrypto_init(&error_fatal); |
c2297088 | 5358 | |
064097d9 | 5359 | module_call_init(MODULE_INIT_QOM); |
ea2384d3 | 5360 | bdrv_init(); |
ac1307ab FZ |
5361 | if (argc < 2) { |
5362 | error_exit("Not enough arguments"); | |
5363 | } | |
153859be | 5364 | |
3babeb15 | 5365 | qemu_add_opts(&qemu_object_opts); |
eb769f74 | 5366 | qemu_add_opts(&qemu_source_opts); |
06a1e0c1 | 5367 | qemu_add_opts(&qemu_trace_opts); |
3babeb15 | 5368 | |
c9192973 | 5369 | while ((c = getopt_long(argc, argv, "+:hVT:", long_options, NULL)) != -1) { |
10985131 | 5370 | switch (c) { |
c9192973 SH |
5371 | case ':': |
5372 | missing_argument(argv[optind - 1]); | |
5373 | return 0; | |
4581c16f | 5374 | case '?': |
c9192973 SH |
5375 | unrecognized_option(argv[optind - 1]); |
5376 | return 0; | |
5377 | case 'h': | |
10985131 DL |
5378 | help(); |
5379 | return 0; | |
5380 | case 'V': | |
5381 | printf(QEMU_IMG_VERSION); | |
5382 | return 0; | |
06a1e0c1 DL |
5383 | case 'T': |
5384 | g_free(trace_file); | |
5385 | trace_file = trace_opt_parse(optarg); | |
5386 | break; | |
153859be | 5387 | } |
ea2384d3 | 5388 | } |
153859be | 5389 | |
10985131 | 5390 | cmdname = argv[optind]; |
7db1689c | 5391 | |
10985131 DL |
5392 | /* reset getopt_long scanning */ |
5393 | argc -= optind; | |
5394 | if (argc < 1) { | |
5f6979cb JC |
5395 | return 0; |
5396 | } | |
10985131 | 5397 | argv += optind; |
d339d766 | 5398 | qemu_reset_optind(); |
10985131 | 5399 | |
06a1e0c1 DL |
5400 | if (!trace_init_backends()) { |
5401 | exit(1); | |
5402 | } | |
5403 | trace_init_file(trace_file); | |
5404 | qemu_set_log(LOG_TRACE); | |
5405 | ||
10985131 DL |
5406 | /* find the command */ |
5407 | for (cmd = img_cmds; cmd->name != NULL; cmd++) { | |
5408 | if (!strcmp(cmdname, cmd->name)) { | |
5409 | return cmd->handler(argc, argv); | |
5410 | } | |
5411 | } | |
7db1689c | 5412 | |
153859be | 5413 | /* not found */ |
ac1307ab | 5414 | error_exit("Command not found: %s", cmdname); |
ea2384d3 | 5415 | } |