]>
Commit | Line | Data |
---|---|---|
ea2384d3 | 1 | /* |
fb43f4dd | 2 | * QEMU disk image utility |
5fafdf24 | 3 | * |
68d0f70e | 4 | * Copyright (c) 2003-2008 Fabrice Bellard |
5fafdf24 | 5 | * |
ea2384d3 FB |
6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
7 | * of this software and associated documentation files (the "Software"), to deal | |
8 | * in the Software without restriction, including without limitation the rights | |
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
10 | * copies of the Software, and to permit persons to whom the Software is | |
11 | * furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
22 | * THE SOFTWARE. | |
23 | */ | |
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, | |
15e39ad9 | 81 | OPTION_BITMAPS = 275, |
a3579bfa | 82 | OPTION_FORCE = 276, |
8599ea4c FS |
83 | }; |
84 | ||
85 | typedef enum OutputFormat { | |
86 | OFORMAT_JSON, | |
87 | OFORMAT_HUMAN, | |
88 | } OutputFormat; | |
89 | ||
e6996143 | 90 | /* Default to cache=writeback as data integrity is not important for qemu-img */ |
661a0f71 | 91 | #define BDRV_DEFAULT_CACHE "writeback" |
137519ce | 92 | |
00c6d403 | 93 | static void format_print(void *opaque, const char *name) |
ea2384d3 | 94 | { |
00c6d403 | 95 | printf(" %s", name); |
ea2384d3 FB |
96 | } |
97 | ||
ac1307ab FZ |
98 | static void QEMU_NORETURN GCC_FMT_ATTR(1, 2) error_exit(const char *fmt, ...) |
99 | { | |
100 | va_list ap; | |
101 | ||
ac1307ab | 102 | va_start(ap, fmt); |
e9e1d92d | 103 | error_vreport(fmt, ap); |
ac1307ab FZ |
104 | va_end(ap); |
105 | ||
e9e1d92d | 106 | error_printf("Try 'qemu-img --help' for more information\n"); |
ac1307ab FZ |
107 | exit(EXIT_FAILURE); |
108 | } | |
109 | ||
c9192973 SH |
110 | static void QEMU_NORETURN missing_argument(const char *option) |
111 | { | |
112 | error_exit("missing argument for option '%s'", option); | |
113 | } | |
114 | ||
115 | static void QEMU_NORETURN unrecognized_option(const char *option) | |
116 | { | |
117 | error_exit("unrecognized option '%s'", option); | |
118 | } | |
119 | ||
0562adf5 | 120 | /* Please keep in synch with docs/tools/qemu-img.rst */ |
ac1307ab | 121 | static void QEMU_NORETURN help(void) |
ea2384d3 | 122 | { |
e00291c0 | 123 | const char *help_msg = |
5f6979cb | 124 | QEMU_IMG_VERSION |
10985131 | 125 | "usage: qemu-img [standard options] command [command options]\n" |
3f020d70 | 126 | "QEMU disk image utility\n" |
127 | "\n" | |
10985131 DL |
128 | " '-h', '--help' display this help and exit\n" |
129 | " '-V', '--version' output version information and exit\n" | |
06a1e0c1 DL |
130 | " '-T', '--trace' [[enable=]<pattern>][,events=<file>][,file=<file>]\n" |
131 | " specify tracing options\n" | |
10985131 | 132 | "\n" |
3f020d70 | 133 | "Command syntax:\n" |
153859be SB |
134 | #define DEF(option, callback, arg_string) \ |
135 | " " arg_string "\n" | |
136 | #include "qemu-img-cmds.h" | |
137 | #undef DEF | |
3f020d70 | 138 | "\n" |
139 | "Command parameters:\n" | |
140 | " 'filename' is a disk image filename\n" | |
3babeb15 DB |
141 | " 'objectdef' is a QEMU user creatable object definition. See the qemu(1)\n" |
142 | " manual page for a description of the object properties. The most common\n" | |
143 | " object type is a 'secret', which is used to supply passwords and/or\n" | |
144 | " encryption keys.\n" | |
3f020d70 | 145 | " 'fmt' is the disk image format. It is guessed automatically in most cases\n" |
661a0f71 | 146 | " 'cache' is the cache mode used to write the output disk image, the valid\n" |
80ccf93b LY |
147 | " options are: 'none', 'writeback' (default, except for convert), 'writethrough',\n" |
148 | " 'directsync' and 'unsafe' (default for convert)\n" | |
bb87fdf8 SH |
149 | " 'src_cache' is the cache mode used to read input disk images, the valid\n" |
150 | " options are the same as for the 'cache' option\n" | |
3f020d70 | 151 | " 'size' is the disk image size in bytes. Optional suffixes\n" |
5e00984a KW |
152 | " 'k' or 'K' (kilobyte, 1024), 'M' (megabyte, 1024k), 'G' (gigabyte, 1024M),\n" |
153 | " 'T' (terabyte, 1024G), 'P' (petabyte, 1024T) and 'E' (exabyte, 1024P) are\n" | |
154 | " supported. 'b' is ignored.\n" | |
3f020d70 | 155 | " 'output_filename' is the destination disk image filename\n" |
156 | " 'output_fmt' is the destination format\n" | |
157 | " 'options' is a comma separated list of format specific options in a\n" | |
158 | " name=value format. Use -o ? for an overview of the options supported by the\n" | |
159 | " used format\n" | |
ef80654d WX |
160 | " 'snapshot_param' is param used for internal snapshot, format\n" |
161 | " is 'snapshot.id=[ID],snapshot.name=[NAME]', or\n" | |
162 | " '[ID_OR_NAME]'\n" | |
3f020d70 | 163 | " '-c' indicates that target image must be compressed (qcow format only)\n" |
6e6e55f5 JS |
164 | " '-u' allows unsafe backing chains. For rebasing, it is assumed that old and\n" |
165 | " new backing file match exactly. The image doesn't need a working\n" | |
166 | " backing file before rebasing in this case (useful for renaming the\n" | |
167 | " backing file). For image creation, allow creating without attempting\n" | |
168 | " to open the backing file.\n" | |
3f020d70 | 169 | " '-h' with or without a command shows this help and lists the supported formats\n" |
6b837bc4 | 170 | " '-p' show progress of command (only certain commands)\n" |
f382d43a | 171 | " '-q' use Quiet mode - do not print any output (except errors)\n" |
11b6699a PL |
172 | " '-S' indicates the consecutive number of bytes (defaults to 4k) that must\n" |
173 | " contain only zeros for qemu-img to create a sparse image during\n" | |
174 | " conversion. If the number of bytes is 0, the source will not be scanned for\n" | |
175 | " unallocated or zero sectors, and the destination image will always be\n" | |
176 | " fully allocated\n" | |
c054b3fd | 177 | " '--output' takes the format in which the output must be done (human or json)\n" |
b2e10493 AD |
178 | " '-n' skips the target volume creation (useful if the volume is created\n" |
179 | " prior to running qemu-img)\n" | |
3f020d70 | 180 | "\n" |
3b51ab4b EB |
181 | "Parameters to bitmap subcommand:\n" |
182 | " 'bitmap' is the name of the bitmap to manipulate, through one or more\n" | |
183 | " actions from '--add', '--remove', '--clear', '--enable', '--disable',\n" | |
184 | " or '--merge source'\n" | |
185 | " '-g granularity' sets the granularity for '--add' actions\n" | |
186 | " '-b source' and '-F src_fmt' tell '--merge' actions to find the source\n" | |
187 | " bitmaps from an alternative file\n" | |
188 | "\n" | |
4534ff54 KW |
189 | "Parameters to check subcommand:\n" |
190 | " '-r' tries to repair any inconsistencies that are found during the check.\n" | |
191 | " '-r leaks' repairs only cluster leaks, whereas '-r all' fixes all\n" | |
192 | " kinds of errors, with a higher risk of choosing the wrong fix or\n" | |
0546b8c2 | 193 | " hiding corruption that has already occurred.\n" |
4534ff54 | 194 | "\n" |
2d9187bc | 195 | "Parameters to convert subcommand:\n" |
15e39ad9 | 196 | " '--bitmaps' copies all top-level persistent bitmaps to destination\n" |
2d9187bc PL |
197 | " '-m' specifies how many coroutines work in parallel during the convert\n" |
198 | " process (defaults to 8)\n" | |
199 | " '-W' allow to write to the target out of order rather than sequential\n" | |
200 | "\n" | |
3f020d70 | 201 | "Parameters to snapshot subcommand:\n" |
202 | " 'snapshot' is the name of the snapshot to create, apply or delete\n" | |
203 | " '-a' applies a snapshot (revert disk to saved state)\n" | |
204 | " '-c' creates a snapshot\n" | |
205 | " '-d' deletes a snapshot\n" | |
d14ed18c MR |
206 | " '-l' lists all snapshots in the given image\n" |
207 | "\n" | |
208 | "Parameters to compare subcommand:\n" | |
209 | " '-f' first image format\n" | |
210 | " '-F' second image format\n" | |
86ce1f6e RS |
211 | " '-s' run in Strict mode - fail on different image size or sector allocation\n" |
212 | "\n" | |
213 | "Parameters to dd subcommand:\n" | |
214 | " 'bs=BYTES' read and write up to BYTES bytes at a time " | |
215 | "(default: 512)\n" | |
216 | " 'count=N' copy only N input blocks\n" | |
217 | " 'if=FILE' read from FILE\n" | |
f7c15533 RS |
218 | " 'of=FILE' write to FILE\n" |
219 | " 'skip=N' skip N bs-sized blocks at the start of input\n"; | |
e00291c0 PB |
220 | |
221 | printf("%s\nSupported formats:", help_msg); | |
9ac404c5 | 222 | bdrv_iterate_format(format_print, NULL, false); |
f5048cb7 | 223 | printf("\n\n" QEMU_HELP_BOTTOM "\n"); |
ac1307ab | 224 | exit(EXIT_SUCCESS); |
ea2384d3 FB |
225 | } |
226 | ||
3babeb15 DB |
227 | static QemuOptsList qemu_object_opts = { |
228 | .name = "object", | |
229 | .implied_opt_name = "qom-type", | |
230 | .head = QTAILQ_HEAD_INITIALIZER(qemu_object_opts.head), | |
231 | .desc = { | |
232 | { } | |
233 | }, | |
234 | }; | |
235 | ||
c6e5cdfd KW |
236 | static bool qemu_img_object_print_help(const char *type, QemuOpts *opts) |
237 | { | |
238 | if (user_creatable_print_help(type, opts)) { | |
239 | exit(0); | |
240 | } | |
241 | return true; | |
80c710cb MA |
242 | } |
243 | ||
244 | /* | |
245 | * Is @optarg safe for accumulate_options()? | |
246 | * It is when multiple of them can be joined together separated by ','. | |
247 | * To make that work, @optarg must not start with ',' (or else a | |
248 | * separating ',' preceding it gets escaped), and it must not end with | |
249 | * an odd number of ',' (or else a separating ',' following it gets | |
f62514b3 MA |
250 | * escaped), or be empty (or else a separating ',' preceding it can |
251 | * escape a separating ',' following it). | |
252 | * | |
80c710cb MA |
253 | */ |
254 | static bool is_valid_option_list(const char *optarg) | |
255 | { | |
256 | size_t len = strlen(optarg); | |
257 | size_t i; | |
258 | ||
f62514b3 | 259 | if (!optarg[0] || optarg[0] == ',') { |
80c710cb MA |
260 | return false; |
261 | } | |
262 | ||
263 | for (i = len; i > 0 && optarg[i - 1] == ','; i--) { | |
264 | } | |
265 | if ((len - i) % 2) { | |
266 | return false; | |
267 | } | |
268 | ||
269 | return true; | |
c6e5cdfd KW |
270 | } |
271 | ||
6d2b5cba MA |
272 | static int accumulate_options(char **options, char *optarg) |
273 | { | |
274 | char *new_options; | |
275 | ||
276 | if (!is_valid_option_list(optarg)) { | |
277 | error_report("Invalid option list: %s", optarg); | |
278 | return -1; | |
279 | } | |
280 | ||
281 | if (!*options) { | |
282 | *options = g_strdup(optarg); | |
283 | } else { | |
284 | new_options = g_strdup_printf("%s,%s", *options, optarg); | |
285 | g_free(*options); | |
286 | *options = new_options; | |
287 | } | |
288 | return 0; | |
289 | } | |
290 | ||
eb769f74 DB |
291 | static QemuOptsList qemu_source_opts = { |
292 | .name = "source", | |
293 | .implied_opt_name = "file", | |
294 | .head = QTAILQ_HEAD_INITIALIZER(qemu_source_opts.head), | |
295 | .desc = { | |
296 | { } | |
297 | }, | |
298 | }; | |
299 | ||
7c30f657 | 300 | static int GCC_FMT_ATTR(2, 3) qprintf(bool quiet, const char *fmt, ...) |
f382d43a MR |
301 | { |
302 | int ret = 0; | |
303 | if (!quiet) { | |
304 | va_list args; | |
305 | va_start(args, fmt); | |
306 | ret = vprintf(fmt, args); | |
307 | va_end(args); | |
308 | } | |
309 | return ret; | |
310 | } | |
311 | ||
ea2384d3 | 312 | |
4ac8aacd JS |
313 | static int print_block_option_help(const char *filename, const char *fmt) |
314 | { | |
315 | BlockDriver *drv, *proto_drv; | |
83d0521a | 316 | QemuOptsList *create_opts = NULL; |
b65a5e12 | 317 | Error *local_err = NULL; |
4ac8aacd JS |
318 | |
319 | /* Find driver and parse its options */ | |
320 | drv = bdrv_find_format(fmt); | |
321 | if (!drv) { | |
15654a6d | 322 | error_report("Unknown file format '%s'", fmt); |
4ac8aacd JS |
323 | return 1; |
324 | } | |
325 | ||
d402b6a2 HR |
326 | if (!drv->create_opts) { |
327 | error_report("Format driver '%s' does not support image creation", fmt); | |
328 | return 1; | |
329 | } | |
330 | ||
c282e1fd | 331 | create_opts = qemu_opts_append(create_opts, drv->create_opts); |
a283cb6e | 332 | if (filename) { |
b65a5e12 | 333 | proto_drv = bdrv_find_protocol(filename, true, &local_err); |
a283cb6e | 334 | if (!proto_drv) { |
2867ce4a | 335 | error_report_err(local_err); |
83d0521a | 336 | qemu_opts_free(create_opts); |
a283cb6e KW |
337 | return 1; |
338 | } | |
d402b6a2 | 339 | if (!proto_drv->create_opts) { |
f0998879 | 340 | error_report("Protocol driver '%s' does not support image creation", |
d402b6a2 | 341 | proto_drv->format_name); |
3ecd5a4f | 342 | qemu_opts_free(create_opts); |
d402b6a2 HR |
343 | return 1; |
344 | } | |
c282e1fd | 345 | create_opts = qemu_opts_append(create_opts, proto_drv->create_opts); |
a283cb6e KW |
346 | } |
347 | ||
f4619af0 HR |
348 | if (filename) { |
349 | printf("Supported options:\n"); | |
350 | } else { | |
351 | printf("Supported %s options:\n", fmt); | |
352 | } | |
63898712 | 353 | qemu_opts_print_help(create_opts, false); |
83d0521a | 354 | qemu_opts_free(create_opts); |
f4619af0 HR |
355 | |
356 | if (!filename) { | |
357 | printf("\n" | |
358 | "The protocol level may support further options.\n" | |
359 | "Specify the target filename to include those options.\n"); | |
360 | } | |
361 | ||
4ac8aacd JS |
362 | return 0; |
363 | } | |
364 | ||
eb769f74 | 365 | |
efaa7c4e | 366 | static BlockBackend *img_open_opts(const char *optstr, |
ce099547 | 367 | QemuOpts *opts, int flags, bool writethrough, |
335e9937 | 368 | bool quiet, bool force_share) |
eb769f74 DB |
369 | { |
370 | QDict *options; | |
371 | Error *local_err = NULL; | |
372 | BlockBackend *blk; | |
373 | options = qemu_opts_to_qdict(opts, NULL); | |
335e9937 FZ |
374 | if (force_share) { |
375 | if (qdict_haskey(options, BDRV_OPT_FORCE_SHARE) | |
4615f878 | 376 | && strcmp(qdict_get_str(options, BDRV_OPT_FORCE_SHARE), "on")) { |
335e9937 | 377 | error_report("--force-share/-U conflicts with image options"); |
cb3e7f08 | 378 | qobject_unref(options); |
335e9937 FZ |
379 | return NULL; |
380 | } | |
4615f878 | 381 | qdict_put_str(options, BDRV_OPT_FORCE_SHARE, "on"); |
335e9937 | 382 | } |
efaa7c4e | 383 | blk = blk_new_open(NULL, NULL, options, flags, &local_err); |
eb769f74 | 384 | if (!blk) { |
143605a2 | 385 | error_reportf_err(local_err, "Could not open '%s': ", optstr); |
eb769f74 DB |
386 | return NULL; |
387 | } | |
ce099547 | 388 | blk_set_enable_write_cache(blk, !writethrough); |
eb769f74 | 389 | |
eb769f74 DB |
390 | return blk; |
391 | } | |
392 | ||
efaa7c4e | 393 | static BlockBackend *img_open_file(const char *filename, |
29cf9336 | 394 | QDict *options, |
eb769f74 | 395 | const char *fmt, int flags, |
335e9937 FZ |
396 | bool writethrough, bool quiet, |
397 | bool force_share) | |
eb769f74 DB |
398 | { |
399 | BlockBackend *blk; | |
34b5d2c6 | 400 | Error *local_err = NULL; |
ad717139 | 401 | |
29cf9336 DB |
402 | if (!options) { |
403 | options = qdict_new(); | |
404 | } | |
75c23805 | 405 | if (fmt) { |
46f5ac20 | 406 | qdict_put_str(options, "driver", fmt); |
75c23805 | 407 | } |
b9eaf9ec | 408 | |
335e9937 | 409 | if (force_share) { |
579cf1d1 | 410 | qdict_put_bool(options, BDRV_OPT_FORCE_SHARE, true); |
335e9937 | 411 | } |
efaa7c4e | 412 | blk = blk_new_open(filename, NULL, options, flags, &local_err); |
5bd31326 | 413 | if (!blk) { |
c29b77f9 | 414 | error_reportf_err(local_err, "Could not open '%s': ", filename); |
eb769f74 | 415 | return NULL; |
75c23805 | 416 | } |
ce099547 | 417 | blk_set_enable_write_cache(blk, !writethrough); |
b9eaf9ec | 418 | |
eb769f74 DB |
419 | return blk; |
420 | } | |
421 | ||
422 | ||
29cf9336 DB |
423 | static int img_add_key_secrets(void *opaque, |
424 | const char *name, const char *value, | |
425 | Error **errp) | |
426 | { | |
427 | QDict *options = opaque; | |
428 | ||
429 | if (g_str_has_suffix(name, "key-secret")) { | |
187f47e9 | 430 | qdict_put_str(options, name, value); |
29cf9336 DB |
431 | } |
432 | ||
433 | return 0; | |
434 | } | |
435 | ||
29cf9336 | 436 | |
efaa7c4e | 437 | static BlockBackend *img_open(bool image_opts, |
eb769f74 | 438 | const char *filename, |
ce099547 | 439 | const char *fmt, int flags, bool writethrough, |
335e9937 | 440 | bool quiet, bool force_share) |
eb769f74 DB |
441 | { |
442 | BlockBackend *blk; | |
443 | if (image_opts) { | |
444 | QemuOpts *opts; | |
445 | if (fmt) { | |
446 | error_report("--image-opts and --format are mutually exclusive"); | |
447 | return NULL; | |
448 | } | |
449 | opts = qemu_opts_parse_noisily(qemu_find_opts("source"), | |
450 | filename, true); | |
451 | if (!opts) { | |
452 | return NULL; | |
453 | } | |
335e9937 FZ |
454 | blk = img_open_opts(filename, opts, flags, writethrough, quiet, |
455 | force_share); | |
eb769f74 | 456 | } else { |
29cf9336 | 457 | blk = img_open_file(filename, NULL, fmt, flags, writethrough, quiet, |
335e9937 | 458 | force_share); |
75c23805 | 459 | } |
7e7d56d9 | 460 | return blk; |
75c23805 FB |
461 | } |
462 | ||
eb769f74 | 463 | |
83d0521a | 464 | static int add_old_style_options(const char *fmt, QemuOpts *opts, |
eec77d9e JS |
465 | const char *base_filename, |
466 | const char *base_fmt) | |
efa84d43 | 467 | { |
6750e795 MA |
468 | Error *err = NULL; |
469 | ||
efa84d43 | 470 | if (base_filename) { |
f43e47db | 471 | qemu_opt_set(opts, BLOCK_OPT_BACKING_FILE, base_filename, &err); |
6750e795 | 472 | if (err) { |
15654a6d JS |
473 | error_report("Backing file not supported for file format '%s'", |
474 | fmt); | |
6750e795 | 475 | error_free(err); |
c2abccec | 476 | return -1; |
efa84d43 KW |
477 | } |
478 | } | |
479 | if (base_fmt) { | |
f43e47db | 480 | qemu_opt_set(opts, BLOCK_OPT_BACKING_FMT, base_fmt, &err); |
6750e795 | 481 | if (err) { |
15654a6d JS |
482 | error_report("Backing file format not supported for file " |
483 | "format '%s'", fmt); | |
6750e795 | 484 | error_free(err); |
c2abccec | 485 | return -1; |
efa84d43 KW |
486 | } |
487 | } | |
c2abccec | 488 | return 0; |
efa84d43 KW |
489 | } |
490 | ||
43d589b0 EM |
491 | static int64_t cvtnum_full(const char *name, const char *value, int64_t min, |
492 | int64_t max) | |
606caa0a | 493 | { |
f17fd4fd | 494 | int err; |
43d589b0 EM |
495 | uint64_t res; |
496 | ||
497 | err = qemu_strtosz(value, NULL, &res); | |
498 | if (err < 0 && err != -ERANGE) { | |
499 | error_report("Invalid %s specified. You may use " | |
500 | "k, M, G, T, P or E suffixes for", name); | |
501 | error_report("kilobytes, megabytes, gigabytes, terabytes, " | |
502 | "petabytes and exabytes."); | |
f17fd4fd MA |
503 | return err; |
504 | } | |
43d589b0 EM |
505 | if (err == -ERANGE || res > max || res < min) { |
506 | error_report("Invalid %s specified. Must be between %" PRId64 | |
507 | " and %" PRId64 ".", name, min, max); | |
f46bfdbf MA |
508 | return -ERANGE; |
509 | } | |
43d589b0 EM |
510 | return res; |
511 | } | |
512 | ||
513 | static int64_t cvtnum(const char *name, const char *value) | |
514 | { | |
515 | return cvtnum_full(name, value, 0, INT64_MAX); | |
606caa0a MA |
516 | } |
517 | ||
ea2384d3 FB |
518 | static int img_create(int argc, char **argv) |
519 | { | |
a9300911 | 520 | int c; |
1da7cfbd | 521 | uint64_t img_size = -1; |
ea2384d3 | 522 | const char *fmt = "raw"; |
9230eaf6 | 523 | const char *base_fmt = NULL; |
ea2384d3 FB |
524 | const char *filename; |
525 | const char *base_filename = NULL; | |
9ea2ea71 | 526 | char *options = NULL; |
9b37525a | 527 | Error *local_err = NULL; |
f382d43a | 528 | bool quiet = false; |
6e6e55f5 | 529 | int flags = 0; |
3b46e624 | 530 | |
ea2384d3 | 531 | for(;;) { |
3babeb15 DB |
532 | static const struct option long_options[] = { |
533 | {"help", no_argument, 0, 'h'}, | |
534 | {"object", required_argument, 0, OPTION_OBJECT}, | |
535 | {0, 0, 0, 0} | |
536 | }; | |
6e6e55f5 | 537 | c = getopt_long(argc, argv, ":F:b:f:ho:qu", |
3babeb15 | 538 | long_options, NULL); |
b8fb60da | 539 | if (c == -1) { |
ea2384d3 | 540 | break; |
b8fb60da | 541 | } |
ea2384d3 | 542 | switch(c) { |
c9192973 SH |
543 | case ':': |
544 | missing_argument(argv[optind - 1]); | |
545 | break; | |
ef87394c | 546 | case '?': |
c9192973 SH |
547 | unrecognized_option(argv[optind - 1]); |
548 | break; | |
ea2384d3 FB |
549 | case 'h': |
550 | help(); | |
551 | break; | |
9230eaf6 AL |
552 | case 'F': |
553 | base_fmt = optarg; | |
554 | break; | |
ea2384d3 FB |
555 | case 'b': |
556 | base_filename = optarg; | |
557 | break; | |
558 | case 'f': | |
559 | fmt = optarg; | |
560 | break; | |
9ea2ea71 | 561 | case 'o': |
6d2b5cba | 562 | if (accumulate_options(&options, optarg) < 0) { |
77386bf6 KW |
563 | goto fail; |
564 | } | |
9ea2ea71 | 565 | break; |
f382d43a MR |
566 | case 'q': |
567 | quiet = true; | |
568 | break; | |
6e6e55f5 JS |
569 | case 'u': |
570 | flags |= BDRV_O_NO_BACKING; | |
571 | break; | |
3babeb15 DB |
572 | case OPTION_OBJECT: { |
573 | QemuOpts *opts; | |
574 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
575 | optarg, true); | |
576 | if (!opts) { | |
577 | goto fail; | |
578 | } | |
579 | } break; | |
ea2384d3 FB |
580 | } |
581 | } | |
9230eaf6 | 582 | |
b50cbabc | 583 | /* Get the filename */ |
a283cb6e KW |
584 | filename = (optind < argc) ? argv[optind] : NULL; |
585 | if (options && has_help_option(options)) { | |
586 | g_free(options); | |
587 | return print_block_option_help(filename, fmt); | |
588 | } | |
589 | ||
b8fb60da | 590 | if (optind >= argc) { |
ac1307ab | 591 | error_exit("Expecting image file name"); |
b8fb60da | 592 | } |
a283cb6e | 593 | optind++; |
b50cbabc | 594 | |
3babeb15 DB |
595 | if (qemu_opts_foreach(&qemu_object_opts, |
596 | user_creatable_add_opts_foreach, | |
c6e5cdfd | 597 | qemu_img_object_print_help, &error_fatal)) { |
3babeb15 DB |
598 | goto fail; |
599 | } | |
600 | ||
1da7cfbd JS |
601 | /* Get image size, if specified */ |
602 | if (optind < argc) { | |
70b4f4bb | 603 | int64_t sval; |
606caa0a | 604 | |
43d589b0 | 605 | sval = cvtnum("image size", argv[optind++]); |
606caa0a | 606 | if (sval < 0) { |
77386bf6 | 607 | goto fail; |
1da7cfbd JS |
608 | } |
609 | img_size = (uint64_t)sval; | |
610 | } | |
fc11eb26 | 611 | if (optind != argc) { |
ac1307ab | 612 | error_exit("Unexpected argument: %s", argv[optind]); |
fc11eb26 | 613 | } |
1da7cfbd | 614 | |
9b37525a | 615 | bdrv_img_create(filename, fmt, base_filename, base_fmt, |
6e6e55f5 | 616 | options, img_size, flags, quiet, &local_err); |
84d18f06 | 617 | if (local_err) { |
c29b77f9 | 618 | error_reportf_err(local_err, "%s: ", filename); |
77386bf6 | 619 | goto fail; |
c2abccec | 620 | } |
a9300911 | 621 | |
77386bf6 | 622 | g_free(options); |
ea2384d3 | 623 | return 0; |
77386bf6 KW |
624 | |
625 | fail: | |
626 | g_free(options); | |
627 | return 1; | |
ea2384d3 FB |
628 | } |
629 | ||
f382d43a | 630 | static void dump_json_image_check(ImageCheck *check, bool quiet) |
8599ea4c | 631 | { |
8599ea4c | 632 | QString *str; |
8599ea4c | 633 | QObject *obj; |
7d5e199a | 634 | Visitor *v = qobject_output_visitor_new(&obj); |
3b098d56 EB |
635 | |
636 | visit_type_ImageCheck(v, NULL, &check, &error_abort); | |
637 | visit_complete(v, &obj); | |
8599ea4c FS |
638 | str = qobject_to_json_pretty(obj); |
639 | assert(str != NULL); | |
f382d43a | 640 | qprintf(quiet, "%s\n", qstring_get_str(str)); |
cb3e7f08 | 641 | qobject_unref(obj); |
3b098d56 | 642 | visit_free(v); |
cb3e7f08 | 643 | qobject_unref(str); |
8599ea4c FS |
644 | } |
645 | ||
f382d43a | 646 | static void dump_human_image_check(ImageCheck *check, bool quiet) |
8599ea4c FS |
647 | { |
648 | if (!(check->corruptions || check->leaks || check->check_errors)) { | |
f382d43a | 649 | qprintf(quiet, "No errors were found on the image.\n"); |
8599ea4c FS |
650 | } else { |
651 | if (check->corruptions) { | |
f382d43a MR |
652 | qprintf(quiet, "\n%" PRId64 " errors were found on the image.\n" |
653 | "Data may be corrupted, or further writes to the image " | |
654 | "may corrupt it.\n", | |
655 | check->corruptions); | |
8599ea4c FS |
656 | } |
657 | ||
658 | if (check->leaks) { | |
f382d43a MR |
659 | qprintf(quiet, |
660 | "\n%" PRId64 " leaked clusters were found on the image.\n" | |
661 | "This means waste of disk space, but no harm to data.\n", | |
662 | check->leaks); | |
8599ea4c FS |
663 | } |
664 | ||
665 | if (check->check_errors) { | |
f382d43a MR |
666 | qprintf(quiet, |
667 | "\n%" PRId64 | |
668 | " internal errors have occurred during the check.\n", | |
669 | check->check_errors); | |
8599ea4c FS |
670 | } |
671 | } | |
672 | ||
673 | if (check->total_clusters != 0 && check->allocated_clusters != 0) { | |
f382d43a MR |
674 | qprintf(quiet, "%" PRId64 "/%" PRId64 " = %0.2f%% allocated, " |
675 | "%0.2f%% fragmented, %0.2f%% compressed clusters\n", | |
676 | check->allocated_clusters, check->total_clusters, | |
677 | check->allocated_clusters * 100.0 / check->total_clusters, | |
678 | check->fragmented_clusters * 100.0 / check->allocated_clusters, | |
679 | check->compressed_clusters * 100.0 / | |
680 | check->allocated_clusters); | |
8599ea4c FS |
681 | } |
682 | ||
683 | if (check->image_end_offset) { | |
f382d43a MR |
684 | qprintf(quiet, |
685 | "Image end offset: %" PRId64 "\n", check->image_end_offset); | |
8599ea4c FS |
686 | } |
687 | } | |
688 | ||
689 | static int collect_image_check(BlockDriverState *bs, | |
690 | ImageCheck *check, | |
691 | const char *filename, | |
692 | const char *fmt, | |
693 | int fix) | |
694 | { | |
695 | int ret; | |
696 | BdrvCheckResult result; | |
697 | ||
698 | ret = bdrv_check(bs, &result, fix); | |
699 | if (ret < 0) { | |
700 | return ret; | |
701 | } | |
702 | ||
703 | check->filename = g_strdup(filename); | |
704 | check->format = g_strdup(bdrv_get_format_name(bs)); | |
705 | check->check_errors = result.check_errors; | |
706 | check->corruptions = result.corruptions; | |
707 | check->has_corruptions = result.corruptions != 0; | |
708 | check->leaks = result.leaks; | |
709 | check->has_leaks = result.leaks != 0; | |
710 | check->corruptions_fixed = result.corruptions_fixed; | |
1656324e | 711 | check->has_corruptions_fixed = result.corruptions_fixed != 0; |
8599ea4c | 712 | check->leaks_fixed = result.leaks_fixed; |
1656324e | 713 | check->has_leaks_fixed = result.leaks_fixed != 0; |
8599ea4c FS |
714 | check->image_end_offset = result.image_end_offset; |
715 | check->has_image_end_offset = result.image_end_offset != 0; | |
716 | check->total_clusters = result.bfi.total_clusters; | |
717 | check->has_total_clusters = result.bfi.total_clusters != 0; | |
718 | check->allocated_clusters = result.bfi.allocated_clusters; | |
719 | check->has_allocated_clusters = result.bfi.allocated_clusters != 0; | |
720 | check->fragmented_clusters = result.bfi.fragmented_clusters; | |
721 | check->has_fragmented_clusters = result.bfi.fragmented_clusters != 0; | |
e6439d78 SH |
722 | check->compressed_clusters = result.bfi.compressed_clusters; |
723 | check->has_compressed_clusters = result.bfi.compressed_clusters != 0; | |
8599ea4c FS |
724 | |
725 | return 0; | |
726 | } | |
727 | ||
e076f338 KW |
728 | /* |
729 | * Checks an image for consistency. Exit codes: | |
730 | * | |
d6635c4d HR |
731 | * 0 - Check completed, image is good |
732 | * 1 - Check not completed because of internal errors | |
733 | * 2 - Check completed, image is corrupted | |
734 | * 3 - Check completed, image has leaked clusters, but is good otherwise | |
735 | * 63 - Checks are not supported by the image format | |
e076f338 | 736 | */ |
1585969c AL |
737 | static int img_check(int argc, char **argv) |
738 | { | |
739 | int c, ret; | |
8599ea4c | 740 | OutputFormat output_format = OFORMAT_HUMAN; |
40055951 | 741 | const char *filename, *fmt, *output, *cache; |
26f54e9a | 742 | BlockBackend *blk; |
1585969c | 743 | BlockDriverState *bs; |
4534ff54 | 744 | int fix = 0; |
ce099547 KW |
745 | int flags = BDRV_O_CHECK; |
746 | bool writethrough; | |
7e7d56d9 | 747 | ImageCheck *check; |
f382d43a | 748 | bool quiet = false; |
eb769f74 | 749 | bool image_opts = false; |
335e9937 | 750 | bool force_share = false; |
1585969c AL |
751 | |
752 | fmt = NULL; | |
8599ea4c | 753 | output = NULL; |
40055951 | 754 | cache = BDRV_DEFAULT_CACHE; |
ce099547 | 755 | |
1585969c | 756 | for(;;) { |
8599ea4c FS |
757 | int option_index = 0; |
758 | static const struct option long_options[] = { | |
759 | {"help", no_argument, 0, 'h'}, | |
760 | {"format", required_argument, 0, 'f'}, | |
4fd6a984 | 761 | {"repair", required_argument, 0, 'r'}, |
8599ea4c | 762 | {"output", required_argument, 0, OPTION_OUTPUT}, |
3babeb15 | 763 | {"object", required_argument, 0, OPTION_OBJECT}, |
eb769f74 | 764 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
335e9937 | 765 | {"force-share", no_argument, 0, 'U'}, |
8599ea4c FS |
766 | {0, 0, 0, 0} |
767 | }; | |
335e9937 | 768 | c = getopt_long(argc, argv, ":hf:r:T:qU", |
8599ea4c | 769 | long_options, &option_index); |
b8fb60da | 770 | if (c == -1) { |
1585969c | 771 | break; |
b8fb60da | 772 | } |
1585969c | 773 | switch(c) { |
c9192973 SH |
774 | case ':': |
775 | missing_argument(argv[optind - 1]); | |
776 | break; | |
ef87394c | 777 | case '?': |
c9192973 SH |
778 | unrecognized_option(argv[optind - 1]); |
779 | break; | |
1585969c AL |
780 | case 'h': |
781 | help(); | |
782 | break; | |
783 | case 'f': | |
784 | fmt = optarg; | |
785 | break; | |
4534ff54 KW |
786 | case 'r': |
787 | flags |= BDRV_O_RDWR; | |
788 | ||
789 | if (!strcmp(optarg, "leaks")) { | |
790 | fix = BDRV_FIX_LEAKS; | |
791 | } else if (!strcmp(optarg, "all")) { | |
792 | fix = BDRV_FIX_LEAKS | BDRV_FIX_ERRORS; | |
793 | } else { | |
ac1307ab FZ |
794 | error_exit("Unknown option value for -r " |
795 | "(expecting 'leaks' or 'all'): %s", optarg); | |
4534ff54 KW |
796 | } |
797 | break; | |
8599ea4c FS |
798 | case OPTION_OUTPUT: |
799 | output = optarg; | |
800 | break; | |
40055951 HR |
801 | case 'T': |
802 | cache = optarg; | |
803 | break; | |
f382d43a MR |
804 | case 'q': |
805 | quiet = true; | |
806 | break; | |
335e9937 FZ |
807 | case 'U': |
808 | force_share = true; | |
809 | break; | |
3babeb15 DB |
810 | case OPTION_OBJECT: { |
811 | QemuOpts *opts; | |
812 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
813 | optarg, true); | |
814 | if (!opts) { | |
815 | return 1; | |
816 | } | |
817 | } break; | |
eb769f74 DB |
818 | case OPTION_IMAGE_OPTS: |
819 | image_opts = true; | |
820 | break; | |
1585969c AL |
821 | } |
822 | } | |
fc11eb26 | 823 | if (optind != argc - 1) { |
ac1307ab | 824 | error_exit("Expecting one image file name"); |
b8fb60da | 825 | } |
1585969c AL |
826 | filename = argv[optind++]; |
827 | ||
8599ea4c FS |
828 | if (output && !strcmp(output, "json")) { |
829 | output_format = OFORMAT_JSON; | |
830 | } else if (output && !strcmp(output, "human")) { | |
831 | output_format = OFORMAT_HUMAN; | |
832 | } else if (output) { | |
833 | error_report("--output must be used with human or json as argument."); | |
834 | return 1; | |
835 | } | |
836 | ||
3babeb15 DB |
837 | if (qemu_opts_foreach(&qemu_object_opts, |
838 | user_creatable_add_opts_foreach, | |
c6e5cdfd | 839 | qemu_img_object_print_help, &error_fatal)) { |
3babeb15 DB |
840 | return 1; |
841 | } | |
842 | ||
ce099547 | 843 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); |
40055951 HR |
844 | if (ret < 0) { |
845 | error_report("Invalid source cache option: %s", cache); | |
846 | return 1; | |
847 | } | |
848 | ||
335e9937 FZ |
849 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet, |
850 | force_share); | |
7e7d56d9 MA |
851 | if (!blk) { |
852 | return 1; | |
c2abccec | 853 | } |
7e7d56d9 | 854 | bs = blk_bs(blk); |
8599ea4c FS |
855 | |
856 | check = g_new0(ImageCheck, 1); | |
857 | ret = collect_image_check(bs, check, filename, fmt, fix); | |
e076f338 KW |
858 | |
859 | if (ret == -ENOTSUP) { | |
55d492d7 | 860 | error_report("This image format does not support checks"); |
fefddf95 | 861 | ret = 63; |
8599ea4c | 862 | goto fail; |
e076f338 KW |
863 | } |
864 | ||
8599ea4c FS |
865 | if (check->corruptions_fixed || check->leaks_fixed) { |
866 | int corruptions_fixed, leaks_fixed; | |
1656324e | 867 | bool has_leaks_fixed, has_corruptions_fixed; |
ccf34716 | 868 | |
8599ea4c | 869 | leaks_fixed = check->leaks_fixed; |
1656324e | 870 | has_leaks_fixed = check->has_leaks_fixed; |
8599ea4c | 871 | corruptions_fixed = check->corruptions_fixed; |
1656324e | 872 | has_corruptions_fixed = check->has_corruptions_fixed; |
e076f338 | 873 | |
8599ea4c | 874 | if (output_format == OFORMAT_HUMAN) { |
f382d43a MR |
875 | qprintf(quiet, |
876 | "The following inconsistencies were found and repaired:\n\n" | |
877 | " %" PRId64 " leaked clusters\n" | |
878 | " %" PRId64 " corruptions\n\n" | |
879 | "Double checking the fixed image now...\n", | |
880 | check->leaks_fixed, | |
881 | check->corruptions_fixed); | |
e076f338 KW |
882 | } |
883 | ||
fc124ea1 PN |
884 | qapi_free_ImageCheck(check); |
885 | check = g_new0(ImageCheck, 1); | |
8599ea4c | 886 | ret = collect_image_check(bs, check, filename, fmt, 0); |
1585969c | 887 | |
8599ea4c | 888 | check->leaks_fixed = leaks_fixed; |
1656324e | 889 | check->has_leaks_fixed = has_leaks_fixed; |
8599ea4c | 890 | check->corruptions_fixed = corruptions_fixed; |
1656324e | 891 | check->has_corruptions_fixed = has_corruptions_fixed; |
f8111c24 DXW |
892 | } |
893 | ||
832390a5 HR |
894 | if (!ret) { |
895 | switch (output_format) { | |
896 | case OFORMAT_HUMAN: | |
897 | dump_human_image_check(check, quiet); | |
898 | break; | |
899 | case OFORMAT_JSON: | |
900 | dump_json_image_check(check, quiet); | |
901 | break; | |
902 | } | |
c6bb9ad1 FS |
903 | } |
904 | ||
8599ea4c | 905 | if (ret || check->check_errors) { |
832390a5 HR |
906 | if (ret) { |
907 | error_report("Check failed: %s", strerror(-ret)); | |
908 | } else { | |
909 | error_report("Check failed"); | |
910 | } | |
8599ea4c FS |
911 | ret = 1; |
912 | goto fail; | |
c2abccec | 913 | } |
e076f338 | 914 | |
8599ea4c FS |
915 | if (check->corruptions) { |
916 | ret = 2; | |
917 | } else if (check->leaks) { | |
918 | ret = 3; | |
e076f338 | 919 | } else { |
8599ea4c | 920 | ret = 0; |
e076f338 | 921 | } |
8599ea4c FS |
922 | |
923 | fail: | |
924 | qapi_free_ImageCheck(check); | |
26f54e9a | 925 | blk_unref(blk); |
8599ea4c | 926 | return ret; |
1585969c AL |
927 | } |
928 | ||
d4a3238a HR |
929 | typedef struct CommonBlockJobCBInfo { |
930 | BlockDriverState *bs; | |
931 | Error **errp; | |
932 | } CommonBlockJobCBInfo; | |
933 | ||
934 | static void common_block_job_cb(void *opaque, int ret) | |
935 | { | |
936 | CommonBlockJobCBInfo *cbi = opaque; | |
937 | ||
938 | if (ret < 0) { | |
939 | error_setg_errno(cbi->errp, -ret, "Block job failed"); | |
940 | } | |
d4a3238a HR |
941 | } |
942 | ||
943 | static void run_block_job(BlockJob *job, Error **errp) | |
944 | { | |
b75536c9 | 945 | AioContext *aio_context = blk_get_aio_context(job->blk); |
4172a003 | 946 | int ret = 0; |
d4a3238a | 947 | |
9e944cb4 | 948 | aio_context_acquire(aio_context); |
80fa2c75 | 949 | job_ref(&job->job); |
d4a3238a | 950 | do { |
30a5c887 | 951 | float progress = 0.0f; |
d4a3238a | 952 | aio_poll(aio_context, true); |
01fe1ca9 VSO |
953 | if (job->job.progress.total) { |
954 | progress = (float)job->job.progress.current / | |
955 | job->job.progress.total * 100.f; | |
30a5c887 KW |
956 | } |
957 | qemu_progress_print(progress, 0); | |
df956ae2 | 958 | } while (!job_is_ready(&job->job) && !job_is_completed(&job->job)); |
d4a3238a | 959 | |
dbe5e6c1 | 960 | if (!job_is_completed(&job->job)) { |
3d70ff53 | 961 | ret = job_complete_sync(&job->job, errp); |
4172a003 | 962 | } else { |
4ad35181 | 963 | ret = job->job.ret; |
4172a003 | 964 | } |
80fa2c75 | 965 | job_unref(&job->job); |
9e944cb4 | 966 | aio_context_release(aio_context); |
687fa1d8 | 967 | |
4172a003 SJ |
968 | /* publish completion progress only when success */ |
969 | if (!ret) { | |
970 | qemu_progress_print(100.f, 0); | |
971 | } | |
d4a3238a HR |
972 | } |
973 | ||
ea2384d3 FB |
974 | static int img_commit(int argc, char **argv) |
975 | { | |
661a0f71 | 976 | int c, ret, flags; |
1b22bffd | 977 | const char *filename, *fmt, *cache, *base; |
26f54e9a | 978 | BlockBackend *blk; |
d4a3238a | 979 | BlockDriverState *bs, *base_bs; |
4ef85a9c | 980 | BlockJob *job; |
687fa1d8 | 981 | bool progress = false, quiet = false, drop = false; |
ce099547 | 982 | bool writethrough; |
d4a3238a HR |
983 | Error *local_err = NULL; |
984 | CommonBlockJobCBInfo cbi; | |
eb769f74 | 985 | bool image_opts = false; |
9e944cb4 | 986 | AioContext *aio_context; |
ea2384d3 FB |
987 | |
988 | fmt = NULL; | |
661a0f71 | 989 | cache = BDRV_DEFAULT_CACHE; |
1b22bffd | 990 | base = NULL; |
ea2384d3 | 991 | for(;;) { |
3babeb15 DB |
992 | static const struct option long_options[] = { |
993 | {"help", no_argument, 0, 'h'}, | |
994 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 995 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
996 | {0, 0, 0, 0} |
997 | }; | |
c9192973 | 998 | c = getopt_long(argc, argv, ":f:ht:b:dpq", |
3babeb15 | 999 | long_options, NULL); |
b8fb60da | 1000 | if (c == -1) { |
ea2384d3 | 1001 | break; |
b8fb60da | 1002 | } |
ea2384d3 | 1003 | switch(c) { |
c9192973 SH |
1004 | case ':': |
1005 | missing_argument(argv[optind - 1]); | |
1006 | break; | |
ef87394c | 1007 | case '?': |
c9192973 SH |
1008 | unrecognized_option(argv[optind - 1]); |
1009 | break; | |
ea2384d3 FB |
1010 | case 'h': |
1011 | help(); | |
1012 | break; | |
1013 | case 'f': | |
1014 | fmt = optarg; | |
1015 | break; | |
661a0f71 FS |
1016 | case 't': |
1017 | cache = optarg; | |
1018 | break; | |
1b22bffd HR |
1019 | case 'b': |
1020 | base = optarg; | |
1021 | /* -b implies -d */ | |
1022 | drop = true; | |
1023 | break; | |
9a86fe48 HR |
1024 | case 'd': |
1025 | drop = true; | |
1026 | break; | |
687fa1d8 HR |
1027 | case 'p': |
1028 | progress = true; | |
1029 | break; | |
f382d43a MR |
1030 | case 'q': |
1031 | quiet = true; | |
1032 | break; | |
3babeb15 DB |
1033 | case OPTION_OBJECT: { |
1034 | QemuOpts *opts; | |
1035 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
1036 | optarg, true); | |
1037 | if (!opts) { | |
1038 | return 1; | |
1039 | } | |
1040 | } break; | |
eb769f74 DB |
1041 | case OPTION_IMAGE_OPTS: |
1042 | image_opts = true; | |
1043 | break; | |
ea2384d3 FB |
1044 | } |
1045 | } | |
687fa1d8 HR |
1046 | |
1047 | /* Progress is not shown in Quiet mode */ | |
1048 | if (quiet) { | |
1049 | progress = false; | |
1050 | } | |
1051 | ||
fc11eb26 | 1052 | if (optind != argc - 1) { |
ac1307ab | 1053 | error_exit("Expecting one image file name"); |
b8fb60da | 1054 | } |
ea2384d3 FB |
1055 | filename = argv[optind++]; |
1056 | ||
3babeb15 DB |
1057 | if (qemu_opts_foreach(&qemu_object_opts, |
1058 | user_creatable_add_opts_foreach, | |
c6e5cdfd | 1059 | qemu_img_object_print_help, &error_fatal)) { |
3babeb15 DB |
1060 | return 1; |
1061 | } | |
1062 | ||
9a86fe48 | 1063 | flags = BDRV_O_RDWR | BDRV_O_UNMAP; |
ce099547 | 1064 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); |
661a0f71 FS |
1065 | if (ret < 0) { |
1066 | error_report("Invalid cache option: %s", cache); | |
a3981eb9 | 1067 | return 1; |
661a0f71 FS |
1068 | } |
1069 | ||
335e9937 FZ |
1070 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet, |
1071 | false); | |
7e7d56d9 MA |
1072 | if (!blk) { |
1073 | return 1; | |
c2abccec | 1074 | } |
7e7d56d9 MA |
1075 | bs = blk_bs(blk); |
1076 | ||
687fa1d8 HR |
1077 | qemu_progress_init(progress, 1.f); |
1078 | qemu_progress_print(0.f, 100); | |
1079 | ||
1b22bffd HR |
1080 | if (base) { |
1081 | base_bs = bdrv_find_backing_image(bs, base); | |
1082 | if (!base_bs) { | |
6b33f3ae HR |
1083 | error_setg(&local_err, |
1084 | "Did not find '%s' in the backing chain of '%s'", | |
1085 | base, filename); | |
1b22bffd HR |
1086 | goto done; |
1087 | } | |
1088 | } else { | |
1089 | /* This is different from QMP, which by default uses the deepest file in | |
1090 | * the backing chain (i.e., the very base); however, the traditional | |
1091 | * behavior of qemu-img commit is using the immediate backing file. */ | |
760e0063 | 1092 | base_bs = backing_bs(bs); |
1b22bffd HR |
1093 | if (!base_bs) { |
1094 | error_setg(&local_err, "Image does not have a backing file"); | |
1095 | goto done; | |
1096 | } | |
d4a3238a HR |
1097 | } |
1098 | ||
1099 | cbi = (CommonBlockJobCBInfo){ | |
1100 | .errp = &local_err, | |
1101 | .bs = bs, | |
1102 | }; | |
1103 | ||
9e944cb4 PB |
1104 | aio_context = bdrv_get_aio_context(bs); |
1105 | aio_context_acquire(aio_context); | |
bb02b65c | 1106 | commit_active_start("commit", bs, base_bs, JOB_DEFAULT, 0, |
0db832f4 | 1107 | BLOCKDEV_ON_ERROR_REPORT, NULL, common_block_job_cb, |
78bbd910 | 1108 | &cbi, false, &local_err); |
9e944cb4 | 1109 | aio_context_release(aio_context); |
d4a3238a HR |
1110 | if (local_err) { |
1111 | goto done; | |
ea2384d3 FB |
1112 | } |
1113 | ||
3f09bfbc KW |
1114 | /* When the block job completes, the BlockBackend reference will point to |
1115 | * the old backing file. In order to avoid that the top image is already | |
1116 | * deleted, so we can still empty it afterwards, increment the reference | |
1117 | * counter here preemptively. */ | |
9a86fe48 | 1118 | if (!drop) { |
3f09bfbc | 1119 | bdrv_ref(bs); |
9a86fe48 HR |
1120 | } |
1121 | ||
4ef85a9c | 1122 | job = block_job_get("commit"); |
2e2db260 | 1123 | assert(job); |
4ef85a9c | 1124 | run_block_job(job, &local_err); |
9a86fe48 HR |
1125 | if (local_err) { |
1126 | goto unref_backing; | |
1127 | } | |
1128 | ||
2d97fde4 HR |
1129 | if (!drop) { |
1130 | BlockBackend *old_backing_blk; | |
1131 | ||
1132 | old_backing_blk = blk_new_with_bs(bs, BLK_PERM_WRITE, BLK_PERM_ALL, | |
1133 | &local_err); | |
1134 | if (!old_backing_blk) { | |
1135 | goto unref_backing; | |
1136 | } | |
1137 | ret = blk_make_empty(old_backing_blk, &local_err); | |
1138 | blk_unref(old_backing_blk); | |
1139 | if (ret == -ENOTSUP) { | |
1140 | error_free(local_err); | |
1141 | local_err = NULL; | |
1142 | } else if (ret < 0) { | |
9a86fe48 HR |
1143 | goto unref_backing; |
1144 | } | |
1145 | } | |
1146 | ||
1147 | unref_backing: | |
1148 | if (!drop) { | |
3f09bfbc | 1149 | bdrv_unref(bs); |
9a86fe48 | 1150 | } |
d4a3238a HR |
1151 | |
1152 | done: | |
687fa1d8 HR |
1153 | qemu_progress_end(); |
1154 | ||
26f54e9a | 1155 | blk_unref(blk); |
d4a3238a HR |
1156 | |
1157 | if (local_err) { | |
6936f299 | 1158 | error_report_err(local_err); |
c2abccec MK |
1159 | return 1; |
1160 | } | |
d4a3238a HR |
1161 | |
1162 | qprintf(quiet, "Image committed.\n"); | |
ea2384d3 FB |
1163 | return 0; |
1164 | } | |
1165 | ||
debb38a4 EB |
1166 | /* |
1167 | * Returns -1 if 'buf' contains only zeroes, otherwise the byte index | |
1168 | * of the first sector boundary within buf where the sector contains a | |
1169 | * non-zero byte. This function is robust to a buffer that is not | |
1170 | * sector-aligned. | |
1171 | */ | |
1172 | static int64_t find_nonzero(const uint8_t *buf, int64_t n) | |
1173 | { | |
1174 | int64_t i; | |
1175 | int64_t end = QEMU_ALIGN_DOWN(n, BDRV_SECTOR_SIZE); | |
1176 | ||
1177 | for (i = 0; i < end; i += BDRV_SECTOR_SIZE) { | |
1178 | if (!buffer_is_zero(buf + i, BDRV_SECTOR_SIZE)) { | |
1179 | return i; | |
1180 | } | |
1181 | } | |
1182 | if (i < n && !buffer_is_zero(buf + i, n - end)) { | |
1183 | return i; | |
1184 | } | |
1185 | return -1; | |
1186 | } | |
1187 | ||
f58c7b35 TS |
1188 | /* |
1189 | * Returns true iff the first sector pointed to by 'buf' contains at least | |
1190 | * a non-NUL byte. | |
1191 | * | |
1192 | * 'pnum' is set to the number of sectors (including and immediately following | |
1193 | * the first one) that are known to be in the same allocated/unallocated state. | |
8dcd3c9b PL |
1194 | * The function will try to align the end offset to alignment boundaries so |
1195 | * that the request will at least end aligned and consequtive requests will | |
1196 | * also start at an aligned offset. | |
f58c7b35 | 1197 | */ |
8dcd3c9b PL |
1198 | static int is_allocated_sectors(const uint8_t *buf, int n, int *pnum, |
1199 | int64_t sector_num, int alignment) | |
ea2384d3 | 1200 | { |
1a6d39fd | 1201 | bool is_zero; |
8dcd3c9b | 1202 | int i, tail; |
ea2384d3 FB |
1203 | |
1204 | if (n <= 0) { | |
1205 | *pnum = 0; | |
1206 | return 0; | |
1207 | } | |
1a6d39fd | 1208 | is_zero = buffer_is_zero(buf, 512); |
ea2384d3 FB |
1209 | for(i = 1; i < n; i++) { |
1210 | buf += 512; | |
1a6d39fd | 1211 | if (is_zero != buffer_is_zero(buf, 512)) { |
ea2384d3 | 1212 | break; |
1a6d39fd | 1213 | } |
ea2384d3 | 1214 | } |
8dcd3c9b PL |
1215 | |
1216 | tail = (sector_num + i) & (alignment - 1); | |
1217 | if (tail) { | |
1218 | if (is_zero && i <= tail) { | |
1219 | /* treat unallocated areas which only consist | |
1220 | * of a small tail as allocated. */ | |
1221 | is_zero = false; | |
1222 | } | |
1223 | if (!is_zero) { | |
1224 | /* align up end offset of allocated areas. */ | |
1225 | i += alignment - tail; | |
1226 | i = MIN(i, n); | |
1227 | } else { | |
1228 | /* align down end offset of zero areas. */ | |
1229 | i -= tail; | |
1230 | } | |
1231 | } | |
ea2384d3 | 1232 | *pnum = i; |
1a6d39fd | 1233 | return !is_zero; |
ea2384d3 FB |
1234 | } |
1235 | ||
a22f123c KW |
1236 | /* |
1237 | * Like is_allocated_sectors, but if the buffer starts with a used sector, | |
1238 | * up to 'min' consecutive sectors containing zeros are ignored. This avoids | |
1239 | * breaking up write requests for only small sparse areas. | |
1240 | */ | |
1241 | static int is_allocated_sectors_min(const uint8_t *buf, int n, int *pnum, | |
8dcd3c9b | 1242 | int min, int64_t sector_num, int alignment) |
a22f123c KW |
1243 | { |
1244 | int ret; | |
1245 | int num_checked, num_used; | |
1246 | ||
1247 | if (n < min) { | |
1248 | min = n; | |
1249 | } | |
1250 | ||
8dcd3c9b | 1251 | ret = is_allocated_sectors(buf, n, pnum, sector_num, alignment); |
a22f123c KW |
1252 | if (!ret) { |
1253 | return ret; | |
1254 | } | |
1255 | ||
1256 | num_used = *pnum; | |
1257 | buf += BDRV_SECTOR_SIZE * *pnum; | |
1258 | n -= *pnum; | |
8dcd3c9b | 1259 | sector_num += *pnum; |
a22f123c KW |
1260 | num_checked = num_used; |
1261 | ||
1262 | while (n > 0) { | |
8dcd3c9b | 1263 | ret = is_allocated_sectors(buf, n, pnum, sector_num, alignment); |
a22f123c KW |
1264 | |
1265 | buf += BDRV_SECTOR_SIZE * *pnum; | |
1266 | n -= *pnum; | |
8dcd3c9b | 1267 | sector_num += *pnum; |
a22f123c KW |
1268 | num_checked += *pnum; |
1269 | if (ret) { | |
1270 | num_used = num_checked; | |
1271 | } else if (*pnum >= min) { | |
1272 | break; | |
1273 | } | |
1274 | } | |
1275 | ||
1276 | *pnum = num_used; | |
1277 | return 1; | |
1278 | } | |
1279 | ||
3e85c6fd | 1280 | /* |
dc61cd3b EB |
1281 | * Compares two buffers sector by sector. Returns 0 if the first |
1282 | * sector of each buffer matches, non-zero otherwise. | |
3e85c6fd | 1283 | * |
dc61cd3b EB |
1284 | * pnum is set to the sector-aligned size of the buffer prefix that |
1285 | * has the same matching status as the first sector. | |
3e85c6fd | 1286 | */ |
dc61cd3b EB |
1287 | static int compare_buffers(const uint8_t *buf1, const uint8_t *buf2, |
1288 | int64_t bytes, int64_t *pnum) | |
3e85c6fd | 1289 | { |
8c1ac475 | 1290 | bool res; |
dc61cd3b | 1291 | int64_t i = MIN(bytes, BDRV_SECTOR_SIZE); |
3e85c6fd | 1292 | |
dc61cd3b | 1293 | assert(bytes > 0); |
3e85c6fd | 1294 | |
dc61cd3b EB |
1295 | res = !!memcmp(buf1, buf2, i); |
1296 | while (i < bytes) { | |
1297 | int64_t len = MIN(bytes - i, BDRV_SECTOR_SIZE); | |
3e85c6fd | 1298 | |
dc61cd3b | 1299 | if (!!memcmp(buf1 + i, buf2 + i, len) != res) { |
3e85c6fd KW |
1300 | break; |
1301 | } | |
dc61cd3b | 1302 | i += len; |
3e85c6fd KW |
1303 | } |
1304 | ||
1305 | *pnum = i; | |
1306 | return res; | |
1307 | } | |
1308 | ||
97ede57a | 1309 | #define IO_BUF_SIZE (2 * MiB) |
ea2384d3 | 1310 | |
d14ed18c MR |
1311 | /* |
1312 | * Check if passed sectors are empty (not allocated or contain only 0 bytes) | |
1313 | * | |
0608e40e EB |
1314 | * Intended for use by 'qemu-img compare': Returns 0 in case sectors are |
1315 | * filled with 0, 1 if sectors contain non-zero data (this is a comparison | |
1316 | * failure), and 4 on error (the exit status for read errors), after emitting | |
1317 | * an error message. | |
d14ed18c | 1318 | * |
f1d3cd79 | 1319 | * @param blk: BlockBackend for the image |
c41508ed EB |
1320 | * @param offset: Starting offset to check |
1321 | * @param bytes: Number of bytes to check | |
d14ed18c MR |
1322 | * @param filename: Name of disk file we are checking (logging purpose) |
1323 | * @param buffer: Allocated buffer for storing read data | |
1324 | * @param quiet: Flag for quiet mode | |
1325 | */ | |
c41508ed EB |
1326 | static int check_empty_sectors(BlockBackend *blk, int64_t offset, |
1327 | int64_t bytes, const char *filename, | |
d14ed18c MR |
1328 | uint8_t *buffer, bool quiet) |
1329 | { | |
debb38a4 EB |
1330 | int ret = 0; |
1331 | int64_t idx; | |
1332 | ||
c41508ed | 1333 | ret = blk_pread(blk, offset, buffer, bytes); |
d14ed18c MR |
1334 | if (ret < 0) { |
1335 | error_report("Error while reading offset %" PRId64 " of %s: %s", | |
c41508ed | 1336 | offset, filename, strerror(-ret)); |
0608e40e | 1337 | return 4; |
d14ed18c | 1338 | } |
c41508ed | 1339 | idx = find_nonzero(buffer, bytes); |
debb38a4 | 1340 | if (idx >= 0) { |
d14ed18c | 1341 | qprintf(quiet, "Content mismatch at offset %" PRId64 "!\n", |
c41508ed | 1342 | offset + idx); |
d14ed18c MR |
1343 | return 1; |
1344 | } | |
1345 | ||
1346 | return 0; | |
1347 | } | |
1348 | ||
1349 | /* | |
1350 | * Compares two images. Exit codes: | |
1351 | * | |
1352 | * 0 - Images are identical | |
1353 | * 1 - Images differ | |
1354 | * >1 - Error occurred | |
1355 | */ | |
1356 | static int img_compare(int argc, char **argv) | |
1357 | { | |
40055951 | 1358 | const char *fmt1 = NULL, *fmt2 = NULL, *cache, *filename1, *filename2; |
26f54e9a | 1359 | BlockBackend *blk1, *blk2; |
d14ed18c | 1360 | BlockDriverState *bs1, *bs2; |
033d9fc2 | 1361 | int64_t total_size1, total_size2; |
d14ed18c | 1362 | uint8_t *buf1 = NULL, *buf2 = NULL; |
31826642 | 1363 | int64_t pnum1, pnum2; |
d14ed18c MR |
1364 | int allocated1, allocated2; |
1365 | int ret = 0; /* return value - 0 Ident, 1 Different, >1 Error */ | |
1366 | bool progress = false, quiet = false, strict = false; | |
40055951 | 1367 | int flags; |
ce099547 | 1368 | bool writethrough; |
033d9fc2 EB |
1369 | int64_t total_size; |
1370 | int64_t offset = 0; | |
1371 | int64_t chunk; | |
dc61cd3b | 1372 | int c; |
d14ed18c | 1373 | uint64_t progress_base; |
eb769f74 | 1374 | bool image_opts = false; |
335e9937 | 1375 | bool force_share = false; |
d14ed18c | 1376 | |
40055951 | 1377 | cache = BDRV_DEFAULT_CACHE; |
d14ed18c | 1378 | for (;;) { |
3babeb15 DB |
1379 | static const struct option long_options[] = { |
1380 | {"help", no_argument, 0, 'h'}, | |
1381 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 1382 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
335e9937 | 1383 | {"force-share", no_argument, 0, 'U'}, |
3babeb15 DB |
1384 | {0, 0, 0, 0} |
1385 | }; | |
335e9937 | 1386 | c = getopt_long(argc, argv, ":hf:F:T:pqsU", |
3babeb15 | 1387 | long_options, NULL); |
d14ed18c MR |
1388 | if (c == -1) { |
1389 | break; | |
1390 | } | |
1391 | switch (c) { | |
c9192973 SH |
1392 | case ':': |
1393 | missing_argument(argv[optind - 1]); | |
1394 | break; | |
d14ed18c | 1395 | case '?': |
c9192973 SH |
1396 | unrecognized_option(argv[optind - 1]); |
1397 | break; | |
d14ed18c MR |
1398 | case 'h': |
1399 | help(); | |
1400 | break; | |
1401 | case 'f': | |
1402 | fmt1 = optarg; | |
1403 | break; | |
1404 | case 'F': | |
1405 | fmt2 = optarg; | |
1406 | break; | |
40055951 HR |
1407 | case 'T': |
1408 | cache = optarg; | |
1409 | break; | |
d14ed18c MR |
1410 | case 'p': |
1411 | progress = true; | |
1412 | break; | |
1413 | case 'q': | |
1414 | quiet = true; | |
1415 | break; | |
1416 | case 's': | |
1417 | strict = true; | |
1418 | break; | |
335e9937 FZ |
1419 | case 'U': |
1420 | force_share = true; | |
1421 | break; | |
3babeb15 DB |
1422 | case OPTION_OBJECT: { |
1423 | QemuOpts *opts; | |
1424 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
1425 | optarg, true); | |
1426 | if (!opts) { | |
1427 | ret = 2; | |
1428 | goto out4; | |
1429 | } | |
1430 | } break; | |
eb769f74 DB |
1431 | case OPTION_IMAGE_OPTS: |
1432 | image_opts = true; | |
1433 | break; | |
d14ed18c MR |
1434 | } |
1435 | } | |
1436 | ||
1437 | /* Progress is not shown in Quiet mode */ | |
1438 | if (quiet) { | |
1439 | progress = false; | |
1440 | } | |
1441 | ||
1442 | ||
fc11eb26 | 1443 | if (optind != argc - 2) { |
ac1307ab | 1444 | error_exit("Expecting two image file names"); |
d14ed18c MR |
1445 | } |
1446 | filename1 = argv[optind++]; | |
1447 | filename2 = argv[optind++]; | |
1448 | ||
3babeb15 DB |
1449 | if (qemu_opts_foreach(&qemu_object_opts, |
1450 | user_creatable_add_opts_foreach, | |
c6e5cdfd | 1451 | qemu_img_object_print_help, &error_fatal)) { |
3babeb15 DB |
1452 | ret = 2; |
1453 | goto out4; | |
1454 | } | |
1455 | ||
cbda016d SH |
1456 | /* Initialize before goto out */ |
1457 | qemu_progress_init(progress, 2.0); | |
1458 | ||
ce099547 KW |
1459 | flags = 0; |
1460 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); | |
40055951 HR |
1461 | if (ret < 0) { |
1462 | error_report("Invalid source cache option: %s", cache); | |
1463 | ret = 2; | |
1464 | goto out3; | |
1465 | } | |
1466 | ||
335e9937 FZ |
1467 | blk1 = img_open(image_opts, filename1, fmt1, flags, writethrough, quiet, |
1468 | force_share); | |
7e7d56d9 | 1469 | if (!blk1) { |
d14ed18c | 1470 | ret = 2; |
7e7d56d9 | 1471 | goto out3; |
d14ed18c MR |
1472 | } |
1473 | ||
335e9937 FZ |
1474 | blk2 = img_open(image_opts, filename2, fmt2, flags, writethrough, quiet, |
1475 | force_share); | |
7e7d56d9 | 1476 | if (!blk2) { |
d14ed18c | 1477 | ret = 2; |
7e7d56d9 | 1478 | goto out2; |
d14ed18c | 1479 | } |
eb769f74 | 1480 | bs1 = blk_bs(blk1); |
7e7d56d9 | 1481 | bs2 = blk_bs(blk2); |
d14ed18c | 1482 | |
f1d3cd79 HR |
1483 | buf1 = blk_blockalign(blk1, IO_BUF_SIZE); |
1484 | buf2 = blk_blockalign(blk2, IO_BUF_SIZE); | |
033d9fc2 EB |
1485 | total_size1 = blk_getlength(blk1); |
1486 | if (total_size1 < 0) { | |
52bf1e72 | 1487 | error_report("Can't get size of %s: %s", |
033d9fc2 | 1488 | filename1, strerror(-total_size1)); |
52bf1e72 MA |
1489 | ret = 4; |
1490 | goto out; | |
1491 | } | |
033d9fc2 EB |
1492 | total_size2 = blk_getlength(blk2); |
1493 | if (total_size2 < 0) { | |
52bf1e72 | 1494 | error_report("Can't get size of %s: %s", |
033d9fc2 | 1495 | filename2, strerror(-total_size2)); |
52bf1e72 MA |
1496 | ret = 4; |
1497 | goto out; | |
1498 | } | |
033d9fc2 EB |
1499 | total_size = MIN(total_size1, total_size2); |
1500 | progress_base = MAX(total_size1, total_size2); | |
d14ed18c MR |
1501 | |
1502 | qemu_progress_print(0, 100); | |
1503 | ||
033d9fc2 | 1504 | if (strict && total_size1 != total_size2) { |
d14ed18c MR |
1505 | ret = 1; |
1506 | qprintf(quiet, "Strict mode: Image size mismatch!\n"); | |
1507 | goto out; | |
1508 | } | |
1509 | ||
033d9fc2 | 1510 | while (offset < total_size) { |
31826642 | 1511 | int status1, status2; |
67a0fd2a | 1512 | |
033d9fc2 EB |
1513 | status1 = bdrv_block_status_above(bs1, NULL, offset, |
1514 | total_size1 - offset, &pnum1, NULL, | |
1515 | NULL); | |
25ad8e6e | 1516 | if (status1 < 0) { |
d14ed18c MR |
1517 | ret = 3; |
1518 | error_report("Sector allocation test failed for %s", filename1); | |
1519 | goto out; | |
1520 | } | |
25ad8e6e | 1521 | allocated1 = status1 & BDRV_BLOCK_ALLOCATED; |
d14ed18c | 1522 | |
033d9fc2 EB |
1523 | status2 = bdrv_block_status_above(bs2, NULL, offset, |
1524 | total_size2 - offset, &pnum2, NULL, | |
1525 | NULL); | |
25ad8e6e | 1526 | if (status2 < 0) { |
d14ed18c MR |
1527 | ret = 3; |
1528 | error_report("Sector allocation test failed for %s", filename2); | |
1529 | goto out; | |
1530 | } | |
25ad8e6e | 1531 | allocated2 = status2 & BDRV_BLOCK_ALLOCATED; |
7daddc61 EB |
1532 | |
1533 | assert(pnum1 && pnum2); | |
033d9fc2 | 1534 | chunk = MIN(pnum1, pnum2); |
d14ed18c | 1535 | |
25ad8e6e | 1536 | if (strict) { |
31826642 | 1537 | if (status1 != status2) { |
25ad8e6e FZ |
1538 | ret = 1; |
1539 | qprintf(quiet, "Strict mode: Offset %" PRId64 | |
033d9fc2 | 1540 | " block status mismatch!\n", offset); |
25ad8e6e FZ |
1541 | goto out; |
1542 | } | |
1543 | } | |
1544 | if ((status1 & BDRV_BLOCK_ZERO) && (status2 & BDRV_BLOCK_ZERO)) { | |
7daddc61 | 1545 | /* nothing to do */ |
25ad8e6e | 1546 | } else if (allocated1 == allocated2) { |
d14ed18c | 1547 | if (allocated1) { |
dc61cd3b EB |
1548 | int64_t pnum; |
1549 | ||
033d9fc2 EB |
1550 | chunk = MIN(chunk, IO_BUF_SIZE); |
1551 | ret = blk_pread(blk1, offset, buf1, chunk); | |
d14ed18c | 1552 | if (ret < 0) { |
033d9fc2 EB |
1553 | error_report("Error while reading offset %" PRId64 |
1554 | " of %s: %s", | |
1555 | offset, filename1, strerror(-ret)); | |
d14ed18c MR |
1556 | ret = 4; |
1557 | goto out; | |
1558 | } | |
033d9fc2 | 1559 | ret = blk_pread(blk2, offset, buf2, chunk); |
d14ed18c MR |
1560 | if (ret < 0) { |
1561 | error_report("Error while reading offset %" PRId64 | |
033d9fc2 EB |
1562 | " of %s: %s", |
1563 | offset, filename2, strerror(-ret)); | |
d14ed18c MR |
1564 | ret = 4; |
1565 | goto out; | |
1566 | } | |
033d9fc2 EB |
1567 | ret = compare_buffers(buf1, buf2, chunk, &pnum); |
1568 | if (ret || pnum != chunk) { | |
d14ed18c | 1569 | qprintf(quiet, "Content mismatch at offset %" PRId64 "!\n", |
033d9fc2 | 1570 | offset + (ret ? 0 : pnum)); |
36452f12 | 1571 | ret = 1; |
d14ed18c MR |
1572 | goto out; |
1573 | } | |
1574 | } | |
1575 | } else { | |
033d9fc2 | 1576 | chunk = MIN(chunk, IO_BUF_SIZE); |
d14ed18c | 1577 | if (allocated1) { |
033d9fc2 | 1578 | ret = check_empty_sectors(blk1, offset, chunk, |
d14ed18c MR |
1579 | filename1, buf1, quiet); |
1580 | } else { | |
033d9fc2 | 1581 | ret = check_empty_sectors(blk2, offset, chunk, |
d14ed18c MR |
1582 | filename2, buf1, quiet); |
1583 | } | |
1584 | if (ret) { | |
d14ed18c MR |
1585 | goto out; |
1586 | } | |
1587 | } | |
033d9fc2 EB |
1588 | offset += chunk; |
1589 | qemu_progress_print(((float) chunk / progress_base) * 100, 100); | |
d14ed18c MR |
1590 | } |
1591 | ||
033d9fc2 | 1592 | if (total_size1 != total_size2) { |
f1d3cd79 | 1593 | BlockBackend *blk_over; |
d14ed18c MR |
1594 | const char *filename_over; |
1595 | ||
1596 | qprintf(quiet, "Warning: Image size mismatch!\n"); | |
033d9fc2 | 1597 | if (total_size1 > total_size2) { |
f1d3cd79 | 1598 | blk_over = blk1; |
d14ed18c MR |
1599 | filename_over = filename1; |
1600 | } else { | |
f1d3cd79 | 1601 | blk_over = blk2; |
d14ed18c MR |
1602 | filename_over = filename2; |
1603 | } | |
1604 | ||
033d9fc2 EB |
1605 | while (offset < progress_base) { |
1606 | ret = bdrv_block_status_above(blk_bs(blk_over), NULL, offset, | |
1607 | progress_base - offset, &chunk, | |
1608 | NULL, NULL); | |
d14ed18c MR |
1609 | if (ret < 0) { |
1610 | ret = 3; | |
1611 | error_report("Sector allocation test failed for %s", | |
1612 | filename_over); | |
1613 | goto out; | |
1614 | ||
1615 | } | |
391cb1aa | 1616 | if (ret & BDRV_BLOCK_ALLOCATED && !(ret & BDRV_BLOCK_ZERO)) { |
033d9fc2 EB |
1617 | chunk = MIN(chunk, IO_BUF_SIZE); |
1618 | ret = check_empty_sectors(blk_over, offset, chunk, | |
d14ed18c MR |
1619 | filename_over, buf1, quiet); |
1620 | if (ret) { | |
d14ed18c MR |
1621 | goto out; |
1622 | } | |
1623 | } | |
033d9fc2 EB |
1624 | offset += chunk; |
1625 | qemu_progress_print(((float) chunk / progress_base) * 100, 100); | |
d14ed18c MR |
1626 | } |
1627 | } | |
1628 | ||
1629 | qprintf(quiet, "Images are identical.\n"); | |
1630 | ret = 0; | |
1631 | ||
1632 | out: | |
d14ed18c MR |
1633 | qemu_vfree(buf1); |
1634 | qemu_vfree(buf2); | |
26f54e9a | 1635 | blk_unref(blk2); |
d14ed18c | 1636 | out2: |
26f54e9a | 1637 | blk_unref(blk1); |
d14ed18c MR |
1638 | out3: |
1639 | qemu_progress_end(); | |
3babeb15 | 1640 | out4: |
d14ed18c MR |
1641 | return ret; |
1642 | } | |
1643 | ||
6c729dd8 EB |
1644 | /* Convenience wrapper around qmp_block_dirty_bitmap_merge */ |
1645 | static void do_dirty_bitmap_merge(const char *dst_node, const char *dst_name, | |
1646 | const char *src_node, const char *src_name, | |
1647 | Error **errp) | |
1648 | { | |
1649 | BlockDirtyBitmapMergeSource *merge_src; | |
1650 | BlockDirtyBitmapMergeSourceList *list; | |
1651 | ||
1652 | merge_src = g_new0(BlockDirtyBitmapMergeSource, 1); | |
1653 | merge_src->type = QTYPE_QDICT; | |
1654 | merge_src->u.external.node = g_strdup(src_node); | |
1655 | merge_src->u.external.name = g_strdup(src_name); | |
1656 | list = g_new0(BlockDirtyBitmapMergeSourceList, 1); | |
1657 | list->value = merge_src; | |
1658 | qmp_block_dirty_bitmap_merge(dst_node, dst_name, list, errp); | |
1659 | qapi_free_BlockDirtyBitmapMergeSourceList(list); | |
1660 | } | |
1661 | ||
690c7301 KW |
1662 | enum ImgConvertBlockStatus { |
1663 | BLK_DATA, | |
1664 | BLK_ZERO, | |
1665 | BLK_BACKING_FILE, | |
1666 | }; | |
1667 | ||
2d9187bc PL |
1668 | #define MAX_COROUTINES 16 |
1669 | ||
690c7301 KW |
1670 | typedef struct ImgConvertState { |
1671 | BlockBackend **src; | |
1672 | int64_t *src_sectors; | |
2d9187bc | 1673 | int src_num; |
690c7301 KW |
1674 | int64_t total_sectors; |
1675 | int64_t allocated_sectors; | |
2d9187bc PL |
1676 | int64_t allocated_done; |
1677 | int64_t sector_num; | |
1678 | int64_t wr_offs; | |
690c7301 KW |
1679 | enum ImgConvertBlockStatus status; |
1680 | int64_t sector_next_status; | |
1681 | BlockBackend *target; | |
1682 | bool has_zero_init; | |
1683 | bool compressed; | |
351c8eff | 1684 | bool unallocated_blocks_are_zero; |
4d7c487e | 1685 | bool target_is_new; |
690c7301 | 1686 | bool target_has_backing; |
351c8eff | 1687 | int64_t target_backing_sectors; /* negative if unknown */ |
2d9187bc | 1688 | bool wr_in_order; |
ee5306d0 | 1689 | bool copy_range; |
8eaac025 | 1690 | bool salvage; |
3d96cb91 | 1691 | bool quiet; |
690c7301 | 1692 | int min_sparse; |
8dcd3c9b | 1693 | int alignment; |
690c7301 KW |
1694 | size_t cluster_sectors; |
1695 | size_t buf_sectors; | |
9fd77f99 | 1696 | long num_coroutines; |
2d9187bc PL |
1697 | int running_coroutines; |
1698 | Coroutine *co[MAX_COROUTINES]; | |
1699 | int64_t wait_sector_num[MAX_COROUTINES]; | |
1700 | CoMutex lock; | |
1701 | int ret; | |
690c7301 KW |
1702 | } ImgConvertState; |
1703 | ||
2d9187bc PL |
1704 | static void convert_select_part(ImgConvertState *s, int64_t sector_num, |
1705 | int *src_cur, int64_t *src_cur_offset) | |
690c7301 | 1706 | { |
2d9187bc PL |
1707 | *src_cur = 0; |
1708 | *src_cur_offset = 0; | |
1709 | while (sector_num - *src_cur_offset >= s->src_sectors[*src_cur]) { | |
1710 | *src_cur_offset += s->src_sectors[*src_cur]; | |
1711 | (*src_cur)++; | |
1712 | assert(*src_cur < s->src_num); | |
690c7301 KW |
1713 | } |
1714 | } | |
1715 | ||
1716 | static int convert_iteration_sectors(ImgConvertState *s, int64_t sector_num) | |
1717 | { | |
31826642 EB |
1718 | int64_t src_cur_offset; |
1719 | int ret, n, src_cur; | |
351c8eff | 1720 | bool post_backing_zero = false; |
690c7301 | 1721 | |
2d9187bc | 1722 | convert_select_part(s, sector_num, &src_cur, &src_cur_offset); |
690c7301 KW |
1723 | |
1724 | assert(s->total_sectors > sector_num); | |
1725 | n = MIN(s->total_sectors - sector_num, BDRV_REQUEST_MAX_SECTORS); | |
1726 | ||
351c8eff HR |
1727 | if (s->target_backing_sectors >= 0) { |
1728 | if (sector_num >= s->target_backing_sectors) { | |
1729 | post_backing_zero = s->unallocated_blocks_are_zero; | |
1730 | } else if (sector_num + n > s->target_backing_sectors) { | |
1731 | /* Split requests around target_backing_sectors (because | |
1732 | * starting from there, zeros are handled differently) */ | |
1733 | n = s->target_backing_sectors - sector_num; | |
1734 | } | |
1735 | } | |
1736 | ||
690c7301 | 1737 | if (s->sector_next_status <= sector_num) { |
8eaac025 HR |
1738 | uint64_t offset = (sector_num - src_cur_offset) * BDRV_SECTOR_SIZE; |
1739 | int64_t count; | |
31826642 | 1740 | |
8eaac025 HR |
1741 | do { |
1742 | count = n * BDRV_SECTOR_SIZE; | |
1743 | ||
1744 | if (s->target_has_backing) { | |
1745 | ret = bdrv_block_status(blk_bs(s->src[src_cur]), offset, | |
1746 | count, &count, NULL, NULL); | |
1747 | } else { | |
1748 | ret = bdrv_block_status_above(blk_bs(s->src[src_cur]), NULL, | |
1749 | offset, count, &count, NULL, | |
1750 | NULL); | |
1751 | } | |
1752 | ||
1753 | if (ret < 0) { | |
1754 | if (s->salvage) { | |
1755 | if (n == 1) { | |
1756 | if (!s->quiet) { | |
1757 | warn_report("error while reading block status at " | |
1758 | "offset %" PRIu64 ": %s", offset, | |
1759 | strerror(-ret)); | |
1760 | } | |
1761 | /* Just try to read the data, then */ | |
1762 | ret = BDRV_BLOCK_DATA; | |
1763 | count = BDRV_SECTOR_SIZE; | |
1764 | } else { | |
1765 | /* Retry on a shorter range */ | |
1766 | n = DIV_ROUND_UP(n, 4); | |
1767 | } | |
1768 | } else { | |
1769 | error_report("error while reading block status at offset " | |
1770 | "%" PRIu64 ": %s", offset, strerror(-ret)); | |
1771 | return ret; | |
1772 | } | |
1773 | } | |
1774 | } while (ret < 0); | |
237d78f8 | 1775 | |
31826642 | 1776 | n = DIV_ROUND_UP(count, BDRV_SECTOR_SIZE); |
690c7301 KW |
1777 | |
1778 | if (ret & BDRV_BLOCK_ZERO) { | |
351c8eff | 1779 | s->status = post_backing_zero ? BLK_BACKING_FILE : BLK_ZERO; |
690c7301 KW |
1780 | } else if (ret & BDRV_BLOCK_DATA) { |
1781 | s->status = BLK_DATA; | |
690c7301 | 1782 | } else { |
9f1b92ad | 1783 | s->status = s->target_has_backing ? BLK_BACKING_FILE : BLK_DATA; |
690c7301 KW |
1784 | } |
1785 | ||
1786 | s->sector_next_status = sector_num + n; | |
1787 | } | |
1788 | ||
1789 | n = MIN(n, s->sector_next_status - sector_num); | |
1790 | if (s->status == BLK_DATA) { | |
1791 | n = MIN(n, s->buf_sectors); | |
1792 | } | |
1793 | ||
1794 | /* We need to write complete clusters for compressed images, so if an | |
1795 | * unallocated area is shorter than that, we must consider the whole | |
1796 | * cluster allocated. */ | |
1797 | if (s->compressed) { | |
1798 | if (n < s->cluster_sectors) { | |
1799 | n = MIN(s->cluster_sectors, s->total_sectors - sector_num); | |
1800 | s->status = BLK_DATA; | |
1801 | } else { | |
1802 | n = QEMU_ALIGN_DOWN(n, s->cluster_sectors); | |
1803 | } | |
1804 | } | |
1805 | ||
1806 | return n; | |
1807 | } | |
1808 | ||
2d9187bc PL |
1809 | static int coroutine_fn convert_co_read(ImgConvertState *s, int64_t sector_num, |
1810 | int nb_sectors, uint8_t *buf) | |
690c7301 | 1811 | { |
8eaac025 | 1812 | uint64_t single_read_until = 0; |
2d9187bc | 1813 | int n, ret; |
690c7301 | 1814 | |
690c7301 KW |
1815 | assert(nb_sectors <= s->buf_sectors); |
1816 | while (nb_sectors > 0) { | |
1817 | BlockBackend *blk; | |
2d9187bc PL |
1818 | int src_cur; |
1819 | int64_t bs_sectors, src_cur_offset; | |
8eaac025 | 1820 | uint64_t offset; |
690c7301 KW |
1821 | |
1822 | /* In the case of compression with multiple source files, we can get a | |
1823 | * nb_sectors that spreads into the next part. So we must be able to | |
1824 | * read across multiple BDSes for one convert_read() call. */ | |
2d9187bc PL |
1825 | convert_select_part(s, sector_num, &src_cur, &src_cur_offset); |
1826 | blk = s->src[src_cur]; | |
1827 | bs_sectors = s->src_sectors[src_cur]; | |
1828 | ||
8eaac025 HR |
1829 | offset = (sector_num - src_cur_offset) << BDRV_SECTOR_BITS; |
1830 | ||
2d9187bc | 1831 | n = MIN(nb_sectors, bs_sectors - (sector_num - src_cur_offset)); |
8eaac025 HR |
1832 | if (single_read_until > offset) { |
1833 | n = 1; | |
1834 | } | |
2d9187bc | 1835 | |
8eaac025 | 1836 | ret = blk_co_pread(blk, offset, n << BDRV_SECTOR_BITS, buf, 0); |
690c7301 | 1837 | if (ret < 0) { |
8eaac025 HR |
1838 | if (s->salvage) { |
1839 | if (n > 1) { | |
1840 | single_read_until = offset + (n << BDRV_SECTOR_BITS); | |
1841 | continue; | |
1842 | } else { | |
1843 | if (!s->quiet) { | |
1844 | warn_report("error while reading offset %" PRIu64 | |
1845 | ": %s", offset, strerror(-ret)); | |
1846 | } | |
1847 | memset(buf, 0, BDRV_SECTOR_SIZE); | |
1848 | } | |
1849 | } else { | |
1850 | return ret; | |
1851 | } | |
690c7301 KW |
1852 | } |
1853 | ||
1854 | sector_num += n; | |
1855 | nb_sectors -= n; | |
1856 | buf += n * BDRV_SECTOR_SIZE; | |
1857 | } | |
1858 | ||
1859 | return 0; | |
1860 | } | |
1861 | ||
2d9187bc PL |
1862 | |
1863 | static int coroutine_fn convert_co_write(ImgConvertState *s, int64_t sector_num, | |
1864 | int nb_sectors, uint8_t *buf, | |
1865 | enum ImgConvertBlockStatus status) | |
690c7301 KW |
1866 | { |
1867 | int ret; | |
1868 | ||
1869 | while (nb_sectors > 0) { | |
1870 | int n = nb_sectors; | |
db933fbe LC |
1871 | BdrvRequestFlags flags = s->compressed ? BDRV_REQ_WRITE_COMPRESSED : 0; |
1872 | ||
2d9187bc | 1873 | switch (status) { |
690c7301 KW |
1874 | case BLK_BACKING_FILE: |
1875 | /* If we have a backing file, leave clusters unallocated that are | |
1876 | * unallocated in the source image, so that the backing file is | |
1877 | * visible at the respective offset. */ | |
1878 | assert(s->target_has_backing); | |
1879 | break; | |
1880 | ||
1881 | case BLK_DATA: | |
db933fbe LC |
1882 | /* If we're told to keep the target fully allocated (-S 0) or there |
1883 | * is real non-zero data, we must write it. Otherwise we can treat | |
1884 | * it as zero sectors. | |
1885 | * Compressed clusters need to be written as a whole, so in that | |
1886 | * case we can only save the write if the buffer is completely | |
1887 | * zeroed. */ | |
690c7301 | 1888 | if (!s->min_sparse || |
db933fbe | 1889 | (!s->compressed && |
8dcd3c9b PL |
1890 | is_allocated_sectors_min(buf, n, &n, s->min_sparse, |
1891 | sector_num, s->alignment)) || | |
db933fbe LC |
1892 | (s->compressed && |
1893 | !buffer_is_zero(buf, n * BDRV_SECTOR_SIZE))) | |
690c7301 | 1894 | { |
265a7e54 VSO |
1895 | ret = blk_co_pwrite(s->target, sector_num << BDRV_SECTOR_BITS, |
1896 | n << BDRV_SECTOR_BITS, buf, flags); | |
690c7301 KW |
1897 | if (ret < 0) { |
1898 | return ret; | |
1899 | } | |
1900 | break; | |
1901 | } | |
1902 | /* fall-through */ | |
1903 | ||
1904 | case BLK_ZERO: | |
1905 | if (s->has_zero_init) { | |
db933fbe | 1906 | assert(!s->target_has_backing); |
690c7301 KW |
1907 | break; |
1908 | } | |
2d9187bc PL |
1909 | ret = blk_co_pwrite_zeroes(s->target, |
1910 | sector_num << BDRV_SECTOR_BITS, | |
a3d6ae22 NS |
1911 | n << BDRV_SECTOR_BITS, |
1912 | BDRV_REQ_MAY_UNMAP); | |
690c7301 KW |
1913 | if (ret < 0) { |
1914 | return ret; | |
1915 | } | |
1916 | break; | |
1917 | } | |
1918 | ||
1919 | sector_num += n; | |
1920 | nb_sectors -= n; | |
1921 | buf += n * BDRV_SECTOR_SIZE; | |
1922 | } | |
1923 | ||
1924 | return 0; | |
1925 | } | |
1926 | ||
ee5306d0 FZ |
1927 | static int coroutine_fn convert_co_copy_range(ImgConvertState *s, int64_t sector_num, |
1928 | int nb_sectors) | |
1929 | { | |
1930 | int n, ret; | |
1931 | ||
1932 | while (nb_sectors > 0) { | |
1933 | BlockBackend *blk; | |
1934 | int src_cur; | |
1935 | int64_t bs_sectors, src_cur_offset; | |
1936 | int64_t offset; | |
1937 | ||
1938 | convert_select_part(s, sector_num, &src_cur, &src_cur_offset); | |
1939 | offset = (sector_num - src_cur_offset) << BDRV_SECTOR_BITS; | |
1940 | blk = s->src[src_cur]; | |
1941 | bs_sectors = s->src_sectors[src_cur]; | |
1942 | ||
1943 | n = MIN(nb_sectors, bs_sectors - (sector_num - src_cur_offset)); | |
1944 | ||
1945 | ret = blk_co_copy_range(blk, offset, s->target, | |
1946 | sector_num << BDRV_SECTOR_BITS, | |
67b51fb9 | 1947 | n << BDRV_SECTOR_BITS, 0, 0); |
ee5306d0 FZ |
1948 | if (ret < 0) { |
1949 | return ret; | |
1950 | } | |
1951 | ||
1952 | sector_num += n; | |
1953 | nb_sectors -= n; | |
1954 | } | |
1955 | return 0; | |
1956 | } | |
1957 | ||
2d9187bc | 1958 | static void coroutine_fn convert_co_do_copy(void *opaque) |
690c7301 | 1959 | { |
2d9187bc | 1960 | ImgConvertState *s = opaque; |
690c7301 | 1961 | uint8_t *buf = NULL; |
2d9187bc PL |
1962 | int ret, i; |
1963 | int index = -1; | |
1964 | ||
1965 | for (i = 0; i < s->num_coroutines; i++) { | |
1966 | if (s->co[i] == qemu_coroutine_self()) { | |
1967 | index = i; | |
1968 | break; | |
1969 | } | |
1970 | } | |
1971 | assert(index >= 0); | |
1972 | ||
1973 | s->running_coroutines++; | |
1974 | buf = blk_blockalign(s->target, s->buf_sectors * BDRV_SECTOR_SIZE); | |
1975 | ||
1976 | while (1) { | |
1977 | int n; | |
1978 | int64_t sector_num; | |
1979 | enum ImgConvertBlockStatus status; | |
ee5306d0 | 1980 | bool copy_range; |
2d9187bc PL |
1981 | |
1982 | qemu_co_mutex_lock(&s->lock); | |
1983 | if (s->ret != -EINPROGRESS || s->sector_num >= s->total_sectors) { | |
1984 | qemu_co_mutex_unlock(&s->lock); | |
b91127ed | 1985 | break; |
2d9187bc PL |
1986 | } |
1987 | n = convert_iteration_sectors(s, s->sector_num); | |
1988 | if (n < 0) { | |
1989 | qemu_co_mutex_unlock(&s->lock); | |
1990 | s->ret = n; | |
b91127ed | 1991 | break; |
2d9187bc PL |
1992 | } |
1993 | /* save current sector and allocation status to local variables */ | |
1994 | sector_num = s->sector_num; | |
1995 | status = s->status; | |
1996 | if (!s->min_sparse && s->status == BLK_ZERO) { | |
1997 | n = MIN(n, s->buf_sectors); | |
1998 | } | |
1999 | /* increment global sector counter so that other coroutines can | |
2000 | * already continue reading beyond this request */ | |
2001 | s->sector_num += n; | |
2002 | qemu_co_mutex_unlock(&s->lock); | |
2003 | ||
2004 | if (status == BLK_DATA || (!s->min_sparse && status == BLK_ZERO)) { | |
2005 | s->allocated_done += n; | |
2006 | qemu_progress_print(100.0 * s->allocated_done / | |
2007 | s->allocated_sectors, 0); | |
2008 | } | |
2009 | ||
ee5306d0 FZ |
2010 | retry: |
2011 | copy_range = s->copy_range && s->status == BLK_DATA; | |
2012 | if (status == BLK_DATA && !copy_range) { | |
2d9187bc PL |
2013 | ret = convert_co_read(s, sector_num, n, buf); |
2014 | if (ret < 0) { | |
39f77cb6 EB |
2015 | error_report("error while reading at byte %lld: %s", |
2016 | sector_num * BDRV_SECTOR_SIZE, strerror(-ret)); | |
2d9187bc | 2017 | s->ret = ret; |
2d9187bc PL |
2018 | } |
2019 | } else if (!s->min_sparse && status == BLK_ZERO) { | |
2020 | status = BLK_DATA; | |
2021 | memset(buf, 0x00, n * BDRV_SECTOR_SIZE); | |
2022 | } | |
2023 | ||
2024 | if (s->wr_in_order) { | |
2025 | /* keep writes in order */ | |
b91127ed | 2026 | while (s->wr_offs != sector_num && s->ret == -EINPROGRESS) { |
2d9187bc PL |
2027 | s->wait_sector_num[index] = sector_num; |
2028 | qemu_coroutine_yield(); | |
2029 | } | |
2030 | s->wait_sector_num[index] = -1; | |
2031 | } | |
2032 | ||
b91127ed | 2033 | if (s->ret == -EINPROGRESS) { |
ee5306d0 FZ |
2034 | if (copy_range) { |
2035 | ret = convert_co_copy_range(s, sector_num, n); | |
2036 | if (ret) { | |
2037 | s->copy_range = false; | |
2038 | goto retry; | |
2039 | } | |
2040 | } else { | |
2041 | ret = convert_co_write(s, sector_num, n, buf, status); | |
2042 | } | |
b91127ed | 2043 | if (ret < 0) { |
39f77cb6 EB |
2044 | error_report("error while writing at byte %lld: %s", |
2045 | sector_num * BDRV_SECTOR_SIZE, strerror(-ret)); | |
b91127ed AN |
2046 | s->ret = ret; |
2047 | } | |
2d9187bc PL |
2048 | } |
2049 | ||
2050 | if (s->wr_in_order) { | |
2051 | /* reenter the coroutine that might have waited | |
2052 | * for this write to complete */ | |
2053 | s->wr_offs = sector_num + n; | |
2054 | for (i = 0; i < s->num_coroutines; i++) { | |
2055 | if (s->co[i] && s->wait_sector_num[i] == s->wr_offs) { | |
2056 | /* | |
2057 | * A -> B -> A cannot occur because A has | |
2058 | * s->wait_sector_num[i] == -1 during A -> B. Therefore | |
2059 | * B will never enter A during this time window. | |
2060 | */ | |
2061 | qemu_coroutine_enter(s->co[i]); | |
2062 | break; | |
2063 | } | |
2064 | } | |
2065 | } | |
2066 | } | |
2067 | ||
2d9187bc PL |
2068 | qemu_vfree(buf); |
2069 | s->co[index] = NULL; | |
2070 | s->running_coroutines--; | |
2071 | if (!s->running_coroutines && s->ret == -EINPROGRESS) { | |
2072 | /* the convert job finished successfully */ | |
2073 | s->ret = 0; | |
2074 | } | |
2075 | } | |
2076 | ||
2077 | static int convert_do_copy(ImgConvertState *s) | |
2078 | { | |
2079 | int ret, i, n; | |
2080 | int64_t sector_num = 0; | |
690c7301 KW |
2081 | |
2082 | /* Check whether we have zero initialisation or can get it efficiently */ | |
168468fe DE |
2083 | if (!s->has_zero_init && s->target_is_new && s->min_sparse && |
2084 | !s->target_has_backing) { | |
4d7c487e | 2085 | s->has_zero_init = bdrv_has_zero_init(blk_bs(s->target)); |
4d7c487e | 2086 | } |
690c7301 | 2087 | |
690c7301 KW |
2088 | /* Allocate buffer for copied data. For compressed images, only one cluster |
2089 | * can be copied at a time. */ | |
2090 | if (s->compressed) { | |
2091 | if (s->cluster_sectors <= 0 || s->cluster_sectors > s->buf_sectors) { | |
2092 | error_report("invalid cluster size"); | |
2d9187bc | 2093 | return -EINVAL; |
690c7301 KW |
2094 | } |
2095 | s->buf_sectors = s->cluster_sectors; | |
2096 | } | |
690c7301 | 2097 | |
690c7301 KW |
2098 | while (sector_num < s->total_sectors) { |
2099 | n = convert_iteration_sectors(s, sector_num); | |
2100 | if (n < 0) { | |
2d9187bc | 2101 | return n; |
690c7301 | 2102 | } |
aad15de4 HR |
2103 | if (s->status == BLK_DATA || (!s->min_sparse && s->status == BLK_ZERO)) |
2104 | { | |
690c7301 KW |
2105 | s->allocated_sectors += n; |
2106 | } | |
2107 | sector_num += n; | |
2108 | } | |
2109 | ||
2110 | /* Do the copy */ | |
690c7301 | 2111 | s->sector_next_status = 0; |
2d9187bc | 2112 | s->ret = -EINPROGRESS; |
690c7301 | 2113 | |
2d9187bc PL |
2114 | qemu_co_mutex_init(&s->lock); |
2115 | for (i = 0; i < s->num_coroutines; i++) { | |
2116 | s->co[i] = qemu_coroutine_create(convert_co_do_copy, s); | |
2117 | s->wait_sector_num[i] = -1; | |
2118 | qemu_coroutine_enter(s->co[i]); | |
2119 | } | |
690c7301 | 2120 | |
b91127ed | 2121 | while (s->running_coroutines) { |
2d9187bc | 2122 | main_loop_wait(false); |
690c7301 KW |
2123 | } |
2124 | ||
2d9187bc | 2125 | if (s->compressed && !s->ret) { |
690c7301 | 2126 | /* signal EOF to align */ |
fe5c1355 | 2127 | ret = blk_pwrite_compressed(s->target, 0, NULL, 0); |
690c7301 | 2128 | if (ret < 0) { |
2d9187bc | 2129 | return ret; |
690c7301 KW |
2130 | } |
2131 | } | |
2132 | ||
2d9187bc | 2133 | return s->ret; |
690c7301 KW |
2134 | } |
2135 | ||
15e39ad9 EB |
2136 | static int convert_copy_bitmaps(BlockDriverState *src, BlockDriverState *dst) |
2137 | { | |
2138 | BdrvDirtyBitmap *bm; | |
2139 | Error *err = NULL; | |
2140 | ||
2141 | FOR_EACH_DIRTY_BITMAP(src, bm) { | |
2142 | const char *name; | |
2143 | ||
2144 | if (!bdrv_dirty_bitmap_get_persistence(bm)) { | |
2145 | continue; | |
2146 | } | |
2147 | name = bdrv_dirty_bitmap_name(bm); | |
2148 | qmp_block_dirty_bitmap_add(dst->node_name, name, | |
2149 | true, bdrv_dirty_bitmap_granularity(bm), | |
2150 | true, true, | |
2151 | true, !bdrv_dirty_bitmap_enabled(bm), | |
2152 | &err); | |
2153 | if (err) { | |
2154 | error_reportf_err(err, "Failed to create bitmap %s: ", name); | |
2155 | return -1; | |
2156 | } | |
2157 | ||
2158 | do_dirty_bitmap_merge(dst->node_name, name, src->node_name, name, | |
2159 | &err); | |
2160 | if (err) { | |
2161 | error_reportf_err(err, "Failed to populate bitmap %s: ", name); | |
2162 | return -1; | |
2163 | } | |
2164 | } | |
2165 | ||
2166 | return 0; | |
2167 | } | |
2168 | ||
6360ab27 PL |
2169 | #define MAX_BUF_SECTORS 32768 |
2170 | ||
ea2384d3 FB |
2171 | static int img_convert(int argc, char **argv) |
2172 | { | |
9fd77f99 | 2173 | int c, bs_i, flags, src_flags = 0; |
305b4c60 | 2174 | const char *fmt = NULL, *out_fmt = NULL, *cache = "unsafe", |
9fd77f99 PL |
2175 | *src_cache = BDRV_DEFAULT_CACHE, *out_baseimg = NULL, |
2176 | *out_filename, *out_baseimg_param, *snapshot_name = NULL; | |
305b4c60 | 2177 | BlockDriver *drv = NULL, *proto_drv = NULL; |
faea38e7 | 2178 | BlockDriverInfo bdi; |
9fd77f99 PL |
2179 | BlockDriverState *out_bs; |
2180 | QemuOpts *opts = NULL, *sn_opts = NULL; | |
83d0521a | 2181 | QemuOptsList *create_opts = NULL; |
8d65a3cc | 2182 | QDict *open_opts = NULL; |
efa84d43 | 2183 | char *options = NULL; |
cc84d90f | 2184 | Error *local_err = NULL; |
3d96cb91 | 2185 | bool writethrough, src_writethrough, image_opts = false, |
305b4c60 | 2186 | skip_create = false, progress = false, tgt_image_opts = false; |
9fd77f99 | 2187 | int64_t ret = -EINVAL; |
335e9937 | 2188 | bool force_share = false; |
e11ce12f | 2189 | bool explict_min_sparse = false; |
15e39ad9 | 2190 | bool bitmaps = false; |
9fd77f99 PL |
2191 | |
2192 | ImgConvertState s = (ImgConvertState) { | |
2193 | /* Need at least 4k of zeros for sparse detection */ | |
2194 | .min_sparse = 8, | |
e11ce12f | 2195 | .copy_range = false, |
9fd77f99 PL |
2196 | .buf_sectors = IO_BUF_SIZE / BDRV_SECTOR_SIZE, |
2197 | .wr_in_order = true, | |
2198 | .num_coroutines = 8, | |
2199 | }; | |
ea2384d3 | 2200 | |
ea2384d3 | 2201 | for(;;) { |
3babeb15 DB |
2202 | static const struct option long_options[] = { |
2203 | {"help", no_argument, 0, 'h'}, | |
2204 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 2205 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
335e9937 | 2206 | {"force-share", no_argument, 0, 'U'}, |
305b4c60 | 2207 | {"target-image-opts", no_argument, 0, OPTION_TARGET_IMAGE_OPTS}, |
8eaac025 | 2208 | {"salvage", no_argument, 0, OPTION_SALVAGE}, |
168468fe | 2209 | {"target-is-zero", no_argument, 0, OPTION_TARGET_IS_ZERO}, |
15e39ad9 | 2210 | {"bitmaps", no_argument, 0, OPTION_BITMAPS}, |
3babeb15 DB |
2211 | {0, 0, 0, 0} |
2212 | }; | |
e11ce12f | 2213 | c = getopt_long(argc, argv, ":hf:O:B:Cco:l:S:pt:T:qnm:WU", |
3babeb15 | 2214 | long_options, NULL); |
b8fb60da | 2215 | if (c == -1) { |
ea2384d3 | 2216 | break; |
b8fb60da | 2217 | } |
ea2384d3 | 2218 | switch(c) { |
c9192973 SH |
2219 | case ':': |
2220 | missing_argument(argv[optind - 1]); | |
2221 | break; | |
ef87394c | 2222 | case '?': |
c9192973 SH |
2223 | unrecognized_option(argv[optind - 1]); |
2224 | break; | |
ea2384d3 FB |
2225 | case 'h': |
2226 | help(); | |
2227 | break; | |
2228 | case 'f': | |
2229 | fmt = optarg; | |
2230 | break; | |
2231 | case 'O': | |
2232 | out_fmt = optarg; | |
2233 | break; | |
f58c7b35 TS |
2234 | case 'B': |
2235 | out_baseimg = optarg; | |
2236 | break; | |
e11ce12f FZ |
2237 | case 'C': |
2238 | s.copy_range = true; | |
2239 | break; | |
ea2384d3 | 2240 | case 'c': |
9fd77f99 | 2241 | s.compressed = true; |
ea2384d3 | 2242 | break; |
efa84d43 | 2243 | case 'o': |
6d2b5cba | 2244 | if (accumulate_options(&options, optarg) < 0) { |
64bb01aa | 2245 | goto fail_getopt; |
2dc8328b | 2246 | } |
efa84d43 | 2247 | break; |
ef80654d WX |
2248 | case 'l': |
2249 | if (strstart(optarg, SNAPSHOT_OPT_BASE, NULL)) { | |
70b94331 MA |
2250 | sn_opts = qemu_opts_parse_noisily(&internal_snapshot_opts, |
2251 | optarg, false); | |
ef80654d WX |
2252 | if (!sn_opts) { |
2253 | error_report("Failed in parsing snapshot param '%s'", | |
2254 | optarg); | |
64bb01aa | 2255 | goto fail_getopt; |
ef80654d WX |
2256 | } |
2257 | } else { | |
2258 | snapshot_name = optarg; | |
2259 | } | |
2260 | break; | |
a22f123c KW |
2261 | case 'S': |
2262 | { | |
2263 | int64_t sval; | |
606caa0a | 2264 | |
43d589b0 EM |
2265 | sval = cvtnum("buffer size for sparse output", optarg); |
2266 | if (sval < 0) { | |
2267 | goto fail_getopt; | |
2268 | } else if (!QEMU_IS_ALIGNED(sval, BDRV_SECTOR_SIZE) || | |
6360ab27 PL |
2269 | sval / BDRV_SECTOR_SIZE > MAX_BUF_SECTORS) { |
2270 | error_report("Invalid buffer size for sparse output specified. " | |
2271 | "Valid sizes are multiples of %llu up to %llu. Select " | |
2272 | "0 to disable sparse detection (fully allocates output).", | |
2273 | BDRV_SECTOR_SIZE, MAX_BUF_SECTORS * BDRV_SECTOR_SIZE); | |
64bb01aa | 2274 | goto fail_getopt; |
a22f123c KW |
2275 | } |
2276 | ||
9fd77f99 | 2277 | s.min_sparse = sval / BDRV_SECTOR_SIZE; |
e11ce12f | 2278 | explict_min_sparse = true; |
a22f123c KW |
2279 | break; |
2280 | } | |
6b837bc4 | 2281 | case 'p': |
9fd77f99 | 2282 | progress = true; |
6b837bc4 | 2283 | break; |
661a0f71 FS |
2284 | case 't': |
2285 | cache = optarg; | |
2286 | break; | |
40055951 HR |
2287 | case 'T': |
2288 | src_cache = optarg; | |
2289 | break; | |
f382d43a | 2290 | case 'q': |
3d96cb91 | 2291 | s.quiet = true; |
f382d43a | 2292 | break; |
b2e10493 | 2293 | case 'n': |
9fd77f99 | 2294 | skip_create = true; |
b2e10493 | 2295 | break; |
2d9187bc | 2296 | case 'm': |
9fd77f99 PL |
2297 | if (qemu_strtol(optarg, NULL, 0, &s.num_coroutines) || |
2298 | s.num_coroutines < 1 || s.num_coroutines > MAX_COROUTINES) { | |
2d9187bc PL |
2299 | error_report("Invalid number of coroutines. Allowed number of" |
2300 | " coroutines is between 1 and %d", MAX_COROUTINES); | |
2d9187bc PL |
2301 | goto fail_getopt; |
2302 | } | |
2303 | break; | |
2304 | case 'W': | |
9fd77f99 | 2305 | s.wr_in_order = false; |
2d9187bc | 2306 | break; |
335e9937 FZ |
2307 | case 'U': |
2308 | force_share = true; | |
2309 | break; | |
3258b911 HR |
2310 | case OPTION_OBJECT: { |
2311 | QemuOpts *object_opts; | |
2312 | object_opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
2313 | optarg, true); | |
2314 | if (!object_opts) { | |
3babeb15 DB |
2315 | goto fail_getopt; |
2316 | } | |
2317 | break; | |
3258b911 | 2318 | } |
eb769f74 DB |
2319 | case OPTION_IMAGE_OPTS: |
2320 | image_opts = true; | |
2321 | break; | |
8eaac025 HR |
2322 | case OPTION_SALVAGE: |
2323 | s.salvage = true; | |
2324 | break; | |
305b4c60 DB |
2325 | case OPTION_TARGET_IMAGE_OPTS: |
2326 | tgt_image_opts = true; | |
2327 | break; | |
168468fe DE |
2328 | case OPTION_TARGET_IS_ZERO: |
2329 | /* | |
2330 | * The user asserting that the target is blank has the | |
2331 | * same effect as the target driver supporting zero | |
2332 | * initialisation. | |
2333 | */ | |
2334 | s.has_zero_init = true; | |
2335 | break; | |
15e39ad9 EB |
2336 | case OPTION_BITMAPS: |
2337 | bitmaps = true; | |
2338 | break; | |
ea2384d3 FB |
2339 | } |
2340 | } | |
3b46e624 | 2341 | |
305b4c60 DB |
2342 | if (!out_fmt && !tgt_image_opts) { |
2343 | out_fmt = "raw"; | |
2344 | } | |
2345 | ||
3babeb15 DB |
2346 | if (qemu_opts_foreach(&qemu_object_opts, |
2347 | user_creatable_add_opts_foreach, | |
c6e5cdfd | 2348 | qemu_img_object_print_help, &error_fatal)) { |
3babeb15 DB |
2349 | goto fail_getopt; |
2350 | } | |
2351 | ||
e11ce12f FZ |
2352 | if (s.compressed && s.copy_range) { |
2353 | error_report("Cannot enable copy offloading when -c is used"); | |
2354 | goto fail_getopt; | |
2355 | } | |
2356 | ||
2357 | if (explict_min_sparse && s.copy_range) { | |
2358 | error_report("Cannot enable copy offloading when -S is used"); | |
2359 | goto fail_getopt; | |
2360 | } | |
2361 | ||
8eaac025 HR |
2362 | if (s.copy_range && s.salvage) { |
2363 | error_report("Cannot use copy offloading in salvaging mode"); | |
2364 | goto fail_getopt; | |
2365 | } | |
2366 | ||
305b4c60 DB |
2367 | if (tgt_image_opts && !skip_create) { |
2368 | error_report("--target-image-opts requires use of -n flag"); | |
2369 | goto fail_getopt; | |
2370 | } | |
2371 | ||
ffd8e8ff KW |
2372 | if (skip_create && options) { |
2373 | warn_report("-o has no effect when skipping image creation"); | |
2374 | warn_report("This will become an error in future QEMU versions."); | |
2375 | } | |
2376 | ||
168468fe DE |
2377 | if (s.has_zero_init && !skip_create) { |
2378 | error_report("--target-is-zero requires use of -n flag"); | |
2379 | goto fail_getopt; | |
2380 | } | |
2381 | ||
9fd77f99 PL |
2382 | s.src_num = argc - optind - 1; |
2383 | out_filename = s.src_num >= 1 ? argv[argc - 1] : NULL; | |
f58c7b35 | 2384 | |
2dc8328b | 2385 | if (options && has_help_option(options)) { |
305b4c60 DB |
2386 | if (out_fmt) { |
2387 | ret = print_block_option_help(out_filename, out_fmt); | |
2388 | goto fail_getopt; | |
2389 | } else { | |
2390 | error_report("Option help requires a format be specified"); | |
2391 | goto fail_getopt; | |
2392 | } | |
4ac8aacd JS |
2393 | } |
2394 | ||
9fd77f99 PL |
2395 | if (s.src_num < 1) { |
2396 | error_report("Must specify image file name"); | |
2397 | goto fail_getopt; | |
a283cb6e KW |
2398 | } |
2399 | ||
9fd77f99 | 2400 | /* ret is still -EINVAL until here */ |
ce099547 | 2401 | ret = bdrv_parse_cache_mode(src_cache, &src_flags, &src_writethrough); |
40055951 HR |
2402 | if (ret < 0) { |
2403 | error_report("Invalid source cache option: %s", src_cache); | |
9fd77f99 | 2404 | goto fail_getopt; |
40055951 HR |
2405 | } |
2406 | ||
9fd77f99 | 2407 | /* Initialize before goto out */ |
3d96cb91 | 2408 | if (s.quiet) { |
9fd77f99 PL |
2409 | progress = false; |
2410 | } | |
2411 | qemu_progress_init(progress, 1.0); | |
6b837bc4 JS |
2412 | qemu_progress_print(0, 100); |
2413 | ||
9fd77f99 PL |
2414 | s.src = g_new0(BlockBackend *, s.src_num); |
2415 | s.src_sectors = g_new(int64_t, s.src_num); | |
926c2d23 | 2416 | |
9fd77f99 PL |
2417 | for (bs_i = 0; bs_i < s.src_num; bs_i++) { |
2418 | s.src[bs_i] = img_open(image_opts, argv[optind + bs_i], | |
3d96cb91 | 2419 | fmt, src_flags, src_writethrough, s.quiet, |
335e9937 | 2420 | force_share); |
9fd77f99 | 2421 | if (!s.src[bs_i]) { |
c2abccec MK |
2422 | ret = -1; |
2423 | goto out; | |
2424 | } | |
9fd77f99 PL |
2425 | s.src_sectors[bs_i] = blk_nb_sectors(s.src[bs_i]); |
2426 | if (s.src_sectors[bs_i] < 0) { | |
52bf1e72 | 2427 | error_report("Could not get size of %s: %s", |
9fd77f99 | 2428 | argv[optind + bs_i], strerror(-s.src_sectors[bs_i])); |
52bf1e72 MA |
2429 | ret = -1; |
2430 | goto out; | |
2431 | } | |
9fd77f99 | 2432 | s.total_sectors += s.src_sectors[bs_i]; |
926c2d23 | 2433 | } |
ea2384d3 | 2434 | |
ef80654d | 2435 | if (sn_opts) { |
9fd77f99 | 2436 | bdrv_snapshot_load_tmp(blk_bs(s.src[0]), |
10d6eda1 PM |
2437 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_ID), |
2438 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_NAME), | |
2439 | &local_err); | |
ef80654d | 2440 | } else if (snapshot_name != NULL) { |
9fd77f99 | 2441 | if (s.src_num > 1) { |
6daf194d | 2442 | error_report("No support for concatenating multiple snapshot"); |
51ef6727 | 2443 | ret = -1; |
2444 | goto out; | |
2445 | } | |
7b4c4781 | 2446 | |
9fd77f99 PL |
2447 | bdrv_snapshot_load_tmp_by_id_or_name(blk_bs(s.src[0]), snapshot_name, |
2448 | &local_err); | |
ef80654d | 2449 | } |
84d18f06 | 2450 | if (local_err) { |
c29b77f9 | 2451 | error_reportf_err(local_err, "Failed to load snapshot: "); |
ef80654d WX |
2452 | ret = -1; |
2453 | goto out; | |
51ef6727 | 2454 | } |
2455 | ||
305b4c60 DB |
2456 | if (!skip_create) { |
2457 | /* Find driver and parse its options */ | |
2458 | drv = bdrv_find_format(out_fmt); | |
2459 | if (!drv) { | |
2460 | error_report("Unknown file format '%s'", out_fmt); | |
2461 | ret = -1; | |
2462 | goto out; | |
2463 | } | |
efa84d43 | 2464 | |
305b4c60 DB |
2465 | proto_drv = bdrv_find_protocol(out_filename, true, &local_err); |
2466 | if (!proto_drv) { | |
2467 | error_report_err(local_err); | |
2468 | ret = -1; | |
2469 | goto out; | |
2470 | } | |
b50cbabc | 2471 | |
2e024cde HR |
2472 | if (!drv->create_opts) { |
2473 | error_report("Format driver '%s' does not support image creation", | |
2474 | drv->format_name); | |
2475 | ret = -1; | |
2476 | goto out; | |
2477 | } | |
f75613cf | 2478 | |
2e024cde HR |
2479 | if (!proto_drv->create_opts) { |
2480 | error_report("Protocol driver '%s' does not support image creation", | |
2481 | proto_drv->format_name); | |
2482 | ret = -1; | |
2483 | goto out; | |
2484 | } | |
f75613cf | 2485 | |
2e024cde HR |
2486 | create_opts = qemu_opts_append(create_opts, drv->create_opts); |
2487 | create_opts = qemu_opts_append(create_opts, proto_drv->create_opts); | |
db08adf5 | 2488 | |
2e024cde | 2489 | opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); |
dc523cd3 MA |
2490 | if (options) { |
2491 | qemu_opts_do_parse(opts, options, NULL, &local_err); | |
2492 | if (local_err) { | |
97a2ca7a | 2493 | error_report_err(local_err); |
dc523cd3 MA |
2494 | ret = -1; |
2495 | goto out; | |
2496 | } | |
2e024cde | 2497 | } |
efa84d43 | 2498 | |
9fd77f99 | 2499 | qemu_opt_set_number(opts, BLOCK_OPT_SIZE, s.total_sectors * 512, |
39101f25 | 2500 | &error_abort); |
2e024cde HR |
2501 | ret = add_old_style_options(out_fmt, opts, out_baseimg, NULL); |
2502 | if (ret < 0) { | |
2503 | goto out; | |
2504 | } | |
c2abccec | 2505 | } |
efa84d43 | 2506 | |
a18953fb | 2507 | /* Get backing file name if -o backing_file was used */ |
83d0521a | 2508 | out_baseimg_param = qemu_opt_get(opts, BLOCK_OPT_BACKING_FILE); |
a18953fb | 2509 | if (out_baseimg_param) { |
83d0521a | 2510 | out_baseimg = out_baseimg_param; |
a18953fb | 2511 | } |
9fd77f99 | 2512 | s.target_has_backing = (bool) out_baseimg; |
a18953fb | 2513 | |
168468fe DE |
2514 | if (s.has_zero_init && s.target_has_backing) { |
2515 | error_report("Cannot use --target-is-zero when the destination " | |
2516 | "image has a backing file"); | |
2517 | goto out; | |
2518 | } | |
2519 | ||
48758a84 HR |
2520 | if (s.src_num > 1 && out_baseimg) { |
2521 | error_report("Having a backing file for the target makes no sense when " | |
2522 | "concatenating multiple input images"); | |
2523 | ret = -1; | |
2524 | goto out; | |
2525 | } | |
2526 | ||
efa84d43 | 2527 | /* Check if compression is supported */ |
9fd77f99 | 2528 | if (s.compressed) { |
83d0521a CL |
2529 | bool encryption = |
2530 | qemu_opt_get_bool(opts, BLOCK_OPT_ENCRYPT, false); | |
0cb8d47b DB |
2531 | const char *encryptfmt = |
2532 | qemu_opt_get(opts, BLOCK_OPT_ENCRYPT_FORMAT); | |
83d0521a CL |
2533 | const char *preallocation = |
2534 | qemu_opt_get(opts, BLOCK_OPT_PREALLOC); | |
efa84d43 | 2535 | |
ac850bf0 | 2536 | if (drv && !block_driver_can_compress(drv)) { |
15654a6d | 2537 | error_report("Compression not supported for this file format"); |
c2abccec MK |
2538 | ret = -1; |
2539 | goto out; | |
efa84d43 KW |
2540 | } |
2541 | ||
0cb8d47b | 2542 | if (encryption || encryptfmt) { |
15654a6d JS |
2543 | error_report("Compression and encryption not supported at " |
2544 | "the same time"); | |
c2abccec MK |
2545 | ret = -1; |
2546 | goto out; | |
efa84d43 | 2547 | } |
41521fa4 | 2548 | |
83d0521a CL |
2549 | if (preallocation |
2550 | && strcmp(preallocation, "off")) | |
41521fa4 KW |
2551 | { |
2552 | error_report("Compression and preallocation not supported at " | |
2553 | "the same time"); | |
2554 | ret = -1; | |
2555 | goto out; | |
2556 | } | |
efa84d43 KW |
2557 | } |
2558 | ||
15e39ad9 EB |
2559 | /* Determine if bitmaps need copying */ |
2560 | if (bitmaps) { | |
2561 | if (s.src_num > 1) { | |
2562 | error_report("Copying bitmaps only possible with single source"); | |
2563 | ret = -1; | |
2564 | goto out; | |
2565 | } | |
2566 | if (!bdrv_supports_persistent_dirty_bitmap(blk_bs(s.src[0]))) { | |
2567 | error_report("Source lacks bitmap support"); | |
2568 | ret = -1; | |
2569 | goto out; | |
2570 | } | |
2571 | } | |
2572 | ||
8d65a3cc DB |
2573 | /* |
2574 | * The later open call will need any decryption secrets, and | |
2575 | * bdrv_create() will purge "opts", so extract them now before | |
2576 | * they are lost. | |
2577 | */ | |
2578 | if (!skip_create) { | |
2579 | open_opts = qdict_new(); | |
2580 | qemu_opt_foreach(opts, img_add_key_secrets, open_opts, &error_abort); | |
8d65a3cc | 2581 | |
b2e10493 | 2582 | /* Create the new image */ |
c282e1fd | 2583 | ret = bdrv_create(drv, out_filename, opts, &local_err); |
b2e10493 | 2584 | if (ret < 0) { |
c29b77f9 MA |
2585 | error_reportf_err(local_err, "%s: error while converting %s: ", |
2586 | out_filename, out_fmt); | |
b2e10493 | 2587 | goto out; |
ea2384d3 FB |
2588 | } |
2589 | } | |
3b46e624 | 2590 | |
4d7c487e HR |
2591 | s.target_is_new = !skip_create; |
2592 | ||
9fd77f99 | 2593 | flags = s.min_sparse ? (BDRV_O_RDWR | BDRV_O_UNMAP) : BDRV_O_RDWR; |
ce099547 | 2594 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); |
661a0f71 FS |
2595 | if (ret < 0) { |
2596 | error_report("Invalid cache option: %s", cache); | |
bb9cd2ee | 2597 | goto out; |
661a0f71 FS |
2598 | } |
2599 | ||
305b4c60 DB |
2600 | if (skip_create) { |
2601 | s.target = img_open(tgt_image_opts, out_filename, out_fmt, | |
3d96cb91 | 2602 | flags, writethrough, s.quiet, false); |
305b4c60 DB |
2603 | } else { |
2604 | /* TODO ultimately we should allow --target-image-opts | |
2605 | * to be used even when -n is not given. | |
2606 | * That has to wait for bdrv_create to be improved | |
2607 | * to allow filenames in option syntax | |
2608 | */ | |
8d65a3cc | 2609 | s.target = img_open_file(out_filename, open_opts, out_fmt, |
3d96cb91 | 2610 | flags, writethrough, s.quiet, false); |
8d65a3cc | 2611 | open_opts = NULL; /* blk_new_open will have freed it */ |
305b4c60 | 2612 | } |
9fd77f99 | 2613 | if (!s.target) { |
c2abccec MK |
2614 | ret = -1; |
2615 | goto out; | |
2616 | } | |
9fd77f99 | 2617 | out_bs = blk_bs(s.target); |
ea2384d3 | 2618 | |
15e39ad9 EB |
2619 | if (bitmaps && !bdrv_supports_persistent_dirty_bitmap(out_bs)) { |
2620 | error_report("Format driver '%s' does not support bitmaps", | |
2621 | out_bs->drv->format_name); | |
2622 | ret = -1; | |
2623 | goto out; | |
2624 | } | |
2625 | ||
ac850bf0 | 2626 | if (s.compressed && !block_driver_can_compress(out_bs->drv)) { |
305b4c60 DB |
2627 | error_report("Compression not supported for this file format"); |
2628 | ret = -1; | |
2629 | goto out; | |
2630 | } | |
2631 | ||
5def6b80 | 2632 | /* increase bufsectors from the default 4096 (2M) if opt_transfer |
6360ab27 PL |
2633 | * or discard_alignment of the out_bs is greater. Limit to |
2634 | * MAX_BUF_SECTORS as maximum which is currently 32768 (16MB). */ | |
2635 | s.buf_sectors = MIN(MAX_BUF_SECTORS, | |
9fd77f99 PL |
2636 | MAX(s.buf_sectors, |
2637 | MAX(out_bs->bl.opt_transfer >> BDRV_SECTOR_BITS, | |
2638 | out_bs->bl.pdiscard_alignment >> | |
2639 | BDRV_SECTOR_BITS))); | |
f2521c90 | 2640 | |
8dcd3c9b PL |
2641 | /* try to align the write requests to the destination to avoid unnecessary |
2642 | * RMW cycles. */ | |
2643 | s.alignment = MAX(pow2floor(s.min_sparse), | |
2644 | DIV_ROUND_UP(out_bs->bl.request_alignment, | |
2645 | BDRV_SECTOR_SIZE)); | |
2646 | assert(is_power_of_2(s.alignment)); | |
2647 | ||
b2e10493 | 2648 | if (skip_create) { |
9fd77f99 | 2649 | int64_t output_sectors = blk_nb_sectors(s.target); |
43716fa8 | 2650 | if (output_sectors < 0) { |
eec5eb42 | 2651 | error_report("unable to get output image length: %s", |
43716fa8 | 2652 | strerror(-output_sectors)); |
b2e10493 AD |
2653 | ret = -1; |
2654 | goto out; | |
9fd77f99 | 2655 | } else if (output_sectors < s.total_sectors) { |
b2e10493 AD |
2656 | error_report("output file is smaller than input file"); |
2657 | ret = -1; | |
2658 | goto out; | |
2659 | } | |
2660 | } | |
2661 | ||
c69291e7 | 2662 | if (s.target_has_backing && s.target_is_new) { |
351c8eff HR |
2663 | /* Errors are treated as "backing length unknown" (which means |
2664 | * s.target_backing_sectors has to be negative, which it will | |
2665 | * be automatically). The backing file length is used only | |
2666 | * for optimizations, so such a case is not fatal. */ | |
2667 | s.target_backing_sectors = bdrv_nb_sectors(out_bs->backing->bs); | |
2668 | } else { | |
2669 | s.target_backing_sectors = -1; | |
2670 | } | |
2671 | ||
24f833cd PL |
2672 | ret = bdrv_get_info(out_bs, &bdi); |
2673 | if (ret < 0) { | |
9fd77f99 | 2674 | if (s.compressed) { |
15654a6d | 2675 | error_report("could not get block driver info"); |
c2abccec MK |
2676 | goto out; |
2677 | } | |
24f833cd | 2678 | } else { |
9fd77f99 PL |
2679 | s.compressed = s.compressed || bdi.needs_compressed_writes; |
2680 | s.cluster_sectors = bdi.cluster_size / BDRV_SECTOR_SIZE; | |
351c8eff | 2681 | s.unallocated_blocks_are_zero = bdi.unallocated_blocks_are_zero; |
9fd77f99 | 2682 | } |
802c3d4c | 2683 | |
9fd77f99 | 2684 | ret = convert_do_copy(&s); |
15e39ad9 EB |
2685 | |
2686 | /* Now copy the bitmaps */ | |
2687 | if (bitmaps && ret == 0) { | |
2688 | ret = convert_copy_bitmaps(blk_bs(s.src[0]), out_bs); | |
2689 | } | |
2690 | ||
c2abccec | 2691 | out: |
13c28af8 PL |
2692 | if (!ret) { |
2693 | qemu_progress_print(100, 0); | |
2694 | } | |
6b837bc4 | 2695 | qemu_progress_end(); |
83d0521a CL |
2696 | qemu_opts_del(opts); |
2697 | qemu_opts_free(create_opts); | |
fbf28a43 | 2698 | qemu_opts_del(sn_opts); |
8d65a3cc | 2699 | qobject_unref(open_opts); |
9fd77f99 PL |
2700 | blk_unref(s.target); |
2701 | if (s.src) { | |
2702 | for (bs_i = 0; bs_i < s.src_num; bs_i++) { | |
2703 | blk_unref(s.src[bs_i]); | |
26f54e9a | 2704 | } |
9fd77f99 | 2705 | g_free(s.src); |
26f54e9a | 2706 | } |
9fd77f99 | 2707 | g_free(s.src_sectors); |
64bb01aa KW |
2708 | fail_getopt: |
2709 | g_free(options); | |
2710 | ||
9fd77f99 | 2711 | return !!ret; |
ea2384d3 FB |
2712 | } |
2713 | ||
57d1a2b6 | 2714 | |
faea38e7 FB |
2715 | static void dump_snapshots(BlockDriverState *bs) |
2716 | { | |
2717 | QEMUSnapshotInfo *sn_tab, *sn; | |
2718 | int nb_sns, i; | |
faea38e7 FB |
2719 | |
2720 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
2721 | if (nb_sns <= 0) | |
2722 | return; | |
2723 | printf("Snapshot list:\n"); | |
e1ce7d74 | 2724 | bdrv_snapshot_dump(NULL); |
5b917044 | 2725 | printf("\n"); |
faea38e7 FB |
2726 | for(i = 0; i < nb_sns; i++) { |
2727 | sn = &sn_tab[i]; | |
e1ce7d74 | 2728 | bdrv_snapshot_dump(sn); |
5b917044 | 2729 | printf("\n"); |
faea38e7 | 2730 | } |
7267c094 | 2731 | g_free(sn_tab); |
faea38e7 FB |
2732 | } |
2733 | ||
9699bf0d SH |
2734 | static void dump_json_image_info_list(ImageInfoList *list) |
2735 | { | |
9699bf0d | 2736 | QString *str; |
9699bf0d | 2737 | QObject *obj; |
7d5e199a | 2738 | Visitor *v = qobject_output_visitor_new(&obj); |
3b098d56 EB |
2739 | |
2740 | visit_type_ImageInfoList(v, NULL, &list, &error_abort); | |
2741 | visit_complete(v, &obj); | |
9699bf0d SH |
2742 | str = qobject_to_json_pretty(obj); |
2743 | assert(str != NULL); | |
2744 | printf("%s\n", qstring_get_str(str)); | |
cb3e7f08 | 2745 | qobject_unref(obj); |
3b098d56 | 2746 | visit_free(v); |
cb3e7f08 | 2747 | qobject_unref(str); |
9699bf0d SH |
2748 | } |
2749 | ||
c054b3fd BC |
2750 | static void dump_json_image_info(ImageInfo *info) |
2751 | { | |
c054b3fd | 2752 | QString *str; |
c054b3fd | 2753 | QObject *obj; |
7d5e199a | 2754 | Visitor *v = qobject_output_visitor_new(&obj); |
3b098d56 EB |
2755 | |
2756 | visit_type_ImageInfo(v, NULL, &info, &error_abort); | |
2757 | visit_complete(v, &obj); | |
c054b3fd BC |
2758 | str = qobject_to_json_pretty(obj); |
2759 | assert(str != NULL); | |
2760 | printf("%s\n", qstring_get_str(str)); | |
cb3e7f08 | 2761 | qobject_unref(obj); |
3b098d56 | 2762 | visit_free(v); |
cb3e7f08 | 2763 | qobject_unref(str); |
c054b3fd BC |
2764 | } |
2765 | ||
9699bf0d SH |
2766 | static void dump_human_image_info_list(ImageInfoList *list) |
2767 | { | |
2768 | ImageInfoList *elem; | |
2769 | bool delim = false; | |
2770 | ||
2771 | for (elem = list; elem; elem = elem->next) { | |
2772 | if (delim) { | |
2773 | printf("\n"); | |
2774 | } | |
2775 | delim = true; | |
2776 | ||
e1ce7d74 | 2777 | bdrv_image_info_dump(elem->value); |
9699bf0d SH |
2778 | } |
2779 | } | |
2780 | ||
2781 | static gboolean str_equal_func(gconstpointer a, gconstpointer b) | |
2782 | { | |
2783 | return strcmp(a, b) == 0; | |
2784 | } | |
2785 | ||
2786 | /** | |
2787 | * Open an image file chain and return an ImageInfoList | |
2788 | * | |
2789 | * @filename: topmost image filename | |
2790 | * @fmt: topmost image format (may be NULL to autodetect) | |
2791 | * @chain: true - enumerate entire backing file chain | |
2792 | * false - only topmost image file | |
2793 | * | |
2794 | * Returns a list of ImageInfo objects or NULL if there was an error opening an | |
2795 | * image file. If there was an error a message will have been printed to | |
2796 | * stderr. | |
2797 | */ | |
eb769f74 DB |
2798 | static ImageInfoList *collect_image_info_list(bool image_opts, |
2799 | const char *filename, | |
9699bf0d | 2800 | const char *fmt, |
335e9937 | 2801 | bool chain, bool force_share) |
9699bf0d SH |
2802 | { |
2803 | ImageInfoList *head = NULL; | |
2804 | ImageInfoList **last = &head; | |
2805 | GHashTable *filenames; | |
43526ec8 | 2806 | Error *err = NULL; |
9699bf0d SH |
2807 | |
2808 | filenames = g_hash_table_new_full(g_str_hash, str_equal_func, NULL, NULL); | |
2809 | ||
2810 | while (filename) { | |
26f54e9a | 2811 | BlockBackend *blk; |
9699bf0d SH |
2812 | BlockDriverState *bs; |
2813 | ImageInfo *info; | |
2814 | ImageInfoList *elem; | |
2815 | ||
2816 | if (g_hash_table_lookup_extended(filenames, filename, NULL, NULL)) { | |
2817 | error_report("Backing file '%s' creates an infinite loop.", | |
2818 | filename); | |
2819 | goto err; | |
2820 | } | |
2821 | g_hash_table_insert(filenames, (gpointer)filename, NULL); | |
2822 | ||
efaa7c4e | 2823 | blk = img_open(image_opts, filename, fmt, |
335e9937 FZ |
2824 | BDRV_O_NO_BACKING | BDRV_O_NO_IO, false, false, |
2825 | force_share); | |
7e7d56d9 | 2826 | if (!blk) { |
9699bf0d SH |
2827 | goto err; |
2828 | } | |
7e7d56d9 | 2829 | bs = blk_bs(blk); |
9699bf0d | 2830 | |
43526ec8 | 2831 | bdrv_query_image_info(bs, &info, &err); |
84d18f06 | 2832 | if (err) { |
565f65d2 | 2833 | error_report_err(err); |
26f54e9a | 2834 | blk_unref(blk); |
43526ec8 | 2835 | goto err; |
fb0ed453 | 2836 | } |
9699bf0d SH |
2837 | |
2838 | elem = g_new0(ImageInfoList, 1); | |
2839 | elem->value = info; | |
2840 | *last = elem; | |
2841 | last = &elem->next; | |
2842 | ||
26f54e9a | 2843 | blk_unref(blk); |
9699bf0d | 2844 | |
0da7d13a | 2845 | /* Clear parameters that only apply to the topmost image */ |
9699bf0d | 2846 | filename = fmt = NULL; |
0da7d13a SH |
2847 | image_opts = false; |
2848 | ||
9699bf0d SH |
2849 | if (chain) { |
2850 | if (info->has_full_backing_filename) { | |
2851 | filename = info->full_backing_filename; | |
2852 | } else if (info->has_backing_filename) { | |
92d617ab JS |
2853 | error_report("Could not determine absolute backing filename," |
2854 | " but backing filename '%s' present", | |
2855 | info->backing_filename); | |
2856 | goto err; | |
9699bf0d SH |
2857 | } |
2858 | if (info->has_backing_filename_format) { | |
2859 | fmt = info->backing_filename_format; | |
2860 | } | |
2861 | } | |
2862 | } | |
2863 | g_hash_table_destroy(filenames); | |
2864 | return head; | |
2865 | ||
2866 | err: | |
2867 | qapi_free_ImageInfoList(head); | |
2868 | g_hash_table_destroy(filenames); | |
2869 | return NULL; | |
2870 | } | |
2871 | ||
c054b3fd BC |
2872 | static int img_info(int argc, char **argv) |
2873 | { | |
2874 | int c; | |
2875 | OutputFormat output_format = OFORMAT_HUMAN; | |
9699bf0d | 2876 | bool chain = false; |
c054b3fd | 2877 | const char *filename, *fmt, *output; |
9699bf0d | 2878 | ImageInfoList *list; |
eb769f74 | 2879 | bool image_opts = false; |
335e9937 | 2880 | bool force_share = false; |
c054b3fd | 2881 | |
ea2384d3 | 2882 | fmt = NULL; |
c054b3fd | 2883 | output = NULL; |
ea2384d3 | 2884 | for(;;) { |
c054b3fd BC |
2885 | int option_index = 0; |
2886 | static const struct option long_options[] = { | |
2887 | {"help", no_argument, 0, 'h'}, | |
2888 | {"format", required_argument, 0, 'f'}, | |
2889 | {"output", required_argument, 0, OPTION_OUTPUT}, | |
9699bf0d | 2890 | {"backing-chain", no_argument, 0, OPTION_BACKING_CHAIN}, |
3babeb15 | 2891 | {"object", required_argument, 0, OPTION_OBJECT}, |
eb769f74 | 2892 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
335e9937 | 2893 | {"force-share", no_argument, 0, 'U'}, |
c054b3fd BC |
2894 | {0, 0, 0, 0} |
2895 | }; | |
335e9937 | 2896 | c = getopt_long(argc, argv, ":f:hU", |
c054b3fd | 2897 | long_options, &option_index); |
b8fb60da | 2898 | if (c == -1) { |
ea2384d3 | 2899 | break; |
b8fb60da | 2900 | } |
ea2384d3 | 2901 | switch(c) { |
c9192973 SH |
2902 | case ':': |
2903 | missing_argument(argv[optind - 1]); | |
2904 | break; | |
ef87394c | 2905 | case '?': |
c9192973 SH |
2906 | unrecognized_option(argv[optind - 1]); |
2907 | break; | |
ea2384d3 FB |
2908 | case 'h': |
2909 | help(); | |
2910 | break; | |
2911 | case 'f': | |
2912 | fmt = optarg; | |
2913 | break; | |
335e9937 FZ |
2914 | case 'U': |
2915 | force_share = true; | |
2916 | break; | |
c054b3fd BC |
2917 | case OPTION_OUTPUT: |
2918 | output = optarg; | |
2919 | break; | |
9699bf0d SH |
2920 | case OPTION_BACKING_CHAIN: |
2921 | chain = true; | |
2922 | break; | |
3babeb15 DB |
2923 | case OPTION_OBJECT: { |
2924 | QemuOpts *opts; | |
2925 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
2926 | optarg, true); | |
2927 | if (!opts) { | |
2928 | return 1; | |
2929 | } | |
2930 | } break; | |
eb769f74 DB |
2931 | case OPTION_IMAGE_OPTS: |
2932 | image_opts = true; | |
2933 | break; | |
ea2384d3 FB |
2934 | } |
2935 | } | |
fc11eb26 | 2936 | if (optind != argc - 1) { |
ac1307ab | 2937 | error_exit("Expecting one image file name"); |
b8fb60da | 2938 | } |
ea2384d3 FB |
2939 | filename = argv[optind++]; |
2940 | ||
c054b3fd BC |
2941 | if (output && !strcmp(output, "json")) { |
2942 | output_format = OFORMAT_JSON; | |
2943 | } else if (output && !strcmp(output, "human")) { | |
2944 | output_format = OFORMAT_HUMAN; | |
2945 | } else if (output) { | |
2946 | error_report("--output must be used with human or json as argument."); | |
c2abccec MK |
2947 | return 1; |
2948 | } | |
c054b3fd | 2949 | |
3babeb15 DB |
2950 | if (qemu_opts_foreach(&qemu_object_opts, |
2951 | user_creatable_add_opts_foreach, | |
c6e5cdfd | 2952 | qemu_img_object_print_help, &error_fatal)) { |
3babeb15 DB |
2953 | return 1; |
2954 | } | |
2955 | ||
335e9937 FZ |
2956 | list = collect_image_info_list(image_opts, filename, fmt, chain, |
2957 | force_share); | |
9699bf0d | 2958 | if (!list) { |
c2abccec | 2959 | return 1; |
faea38e7 | 2960 | } |
c054b3fd | 2961 | |
c054b3fd BC |
2962 | switch (output_format) { |
2963 | case OFORMAT_HUMAN: | |
9699bf0d | 2964 | dump_human_image_info_list(list); |
c054b3fd BC |
2965 | break; |
2966 | case OFORMAT_JSON: | |
9699bf0d SH |
2967 | if (chain) { |
2968 | dump_json_image_info_list(list); | |
2969 | } else { | |
2970 | dump_json_image_info(list->value); | |
2971 | } | |
c054b3fd | 2972 | break; |
faea38e7 | 2973 | } |
c054b3fd | 2974 | |
9699bf0d | 2975 | qapi_free_ImageInfoList(list); |
ea2384d3 FB |
2976 | return 0; |
2977 | } | |
2978 | ||
30065d14 EB |
2979 | static int dump_map_entry(OutputFormat output_format, MapEntry *e, |
2980 | MapEntry *next) | |
4c93a13b PB |
2981 | { |
2982 | switch (output_format) { | |
2983 | case OFORMAT_HUMAN: | |
16b0d555 | 2984 | if (e->data && !e->has_offset) { |
4c93a13b | 2985 | error_report("File contains external, encrypted or compressed clusters."); |
30065d14 | 2986 | return -1; |
4c93a13b | 2987 | } |
16b0d555 | 2988 | if (e->data && !e->zero) { |
4c93a13b | 2989 | printf("%#-16"PRIx64"%#-16"PRIx64"%#-16"PRIx64"%s\n", |
16b0d555 FZ |
2990 | e->start, e->length, |
2991 | e->has_offset ? e->offset : 0, | |
2992 | e->has_filename ? e->filename : ""); | |
4c93a13b PB |
2993 | } |
2994 | /* This format ignores the distinction between 0, ZERO and ZERO|DATA. | |
2995 | * Modify the flags here to allow more coalescing. | |
2996 | */ | |
16b0d555 FZ |
2997 | if (next && (!next->data || next->zero)) { |
2998 | next->data = false; | |
2999 | next->zero = true; | |
4c93a13b PB |
3000 | } |
3001 | break; | |
3002 | case OFORMAT_JSON: | |
e46c0b18 | 3003 | printf("{ \"start\": %"PRId64", \"length\": %"PRId64"," |
16b0d555 | 3004 | " \"depth\": %"PRId64", \"zero\": %s, \"data\": %s", |
4c93a13b | 3005 | e->start, e->length, e->depth, |
16b0d555 FZ |
3006 | e->zero ? "true" : "false", |
3007 | e->data ? "true" : "false"); | |
3008 | if (e->has_offset) { | |
c745bfb4 | 3009 | printf(", \"offset\": %"PRId64"", e->offset); |
4c93a13b PB |
3010 | } |
3011 | putchar('}'); | |
3012 | ||
e46c0b18 EM |
3013 | if (next) { |
3014 | puts(","); | |
4c93a13b PB |
3015 | } |
3016 | break; | |
3017 | } | |
30065d14 | 3018 | return 0; |
4c93a13b PB |
3019 | } |
3020 | ||
5e344dd8 EB |
3021 | static int get_block_status(BlockDriverState *bs, int64_t offset, |
3022 | int64_t bytes, MapEntry *e) | |
4c93a13b | 3023 | { |
237d78f8 | 3024 | int ret; |
4c93a13b | 3025 | int depth; |
67a0fd2a | 3026 | BlockDriverState *file; |
2875645b | 3027 | bool has_offset; |
237d78f8 | 3028 | int64_t map; |
f30c66ba | 3029 | char *filename = NULL; |
4c93a13b PB |
3030 | |
3031 | /* As an optimization, we could cache the current range of unallocated | |
3032 | * clusters in each file of the chain, and avoid querying the same | |
3033 | * range repeatedly. | |
3034 | */ | |
3035 | ||
3036 | depth = 0; | |
3037 | for (;;) { | |
237d78f8 | 3038 | ret = bdrv_block_status(bs, offset, bytes, &bytes, &map, &file); |
4c93a13b PB |
3039 | if (ret < 0) { |
3040 | return ret; | |
3041 | } | |
237d78f8 | 3042 | assert(bytes); |
4c93a13b PB |
3043 | if (ret & (BDRV_BLOCK_ZERO|BDRV_BLOCK_DATA)) { |
3044 | break; | |
3045 | } | |
760e0063 | 3046 | bs = backing_bs(bs); |
4c93a13b PB |
3047 | if (bs == NULL) { |
3048 | ret = 0; | |
3049 | break; | |
3050 | } | |
3051 | ||
3052 | depth++; | |
3053 | } | |
3054 | ||
2875645b JS |
3055 | has_offset = !!(ret & BDRV_BLOCK_OFFSET_VALID); |
3056 | ||
f30c66ba HR |
3057 | if (file && has_offset) { |
3058 | bdrv_refresh_filename(file); | |
3059 | filename = file->filename; | |
3060 | } | |
3061 | ||
2875645b | 3062 | *e = (MapEntry) { |
5e344dd8 | 3063 | .start = offset, |
237d78f8 | 3064 | .length = bytes, |
2875645b JS |
3065 | .data = !!(ret & BDRV_BLOCK_DATA), |
3066 | .zero = !!(ret & BDRV_BLOCK_ZERO), | |
237d78f8 | 3067 | .offset = map, |
2875645b JS |
3068 | .has_offset = has_offset, |
3069 | .depth = depth, | |
f30c66ba HR |
3070 | .has_filename = filename, |
3071 | .filename = filename, | |
2875645b JS |
3072 | }; |
3073 | ||
4c93a13b PB |
3074 | return 0; |
3075 | } | |
3076 | ||
16b0d555 FZ |
3077 | static inline bool entry_mergeable(const MapEntry *curr, const MapEntry *next) |
3078 | { | |
3079 | if (curr->length == 0) { | |
3080 | return false; | |
3081 | } | |
3082 | if (curr->zero != next->zero || | |
3083 | curr->data != next->data || | |
3084 | curr->depth != next->depth || | |
3085 | curr->has_filename != next->has_filename || | |
3086 | curr->has_offset != next->has_offset) { | |
3087 | return false; | |
3088 | } | |
3089 | if (curr->has_filename && strcmp(curr->filename, next->filename)) { | |
3090 | return false; | |
3091 | } | |
3092 | if (curr->has_offset && curr->offset + curr->length != next->offset) { | |
3093 | return false; | |
3094 | } | |
3095 | return true; | |
3096 | } | |
3097 | ||
4c93a13b PB |
3098 | static int img_map(int argc, char **argv) |
3099 | { | |
3100 | int c; | |
3101 | OutputFormat output_format = OFORMAT_HUMAN; | |
26f54e9a | 3102 | BlockBackend *blk; |
4c93a13b PB |
3103 | BlockDriverState *bs; |
3104 | const char *filename, *fmt, *output; | |
3105 | int64_t length; | |
3106 | MapEntry curr = { .length = 0 }, next; | |
3107 | int ret = 0; | |
eb769f74 | 3108 | bool image_opts = false; |
335e9937 | 3109 | bool force_share = false; |
c0469496 EM |
3110 | int64_t start_offset = 0; |
3111 | int64_t max_length = -1; | |
4c93a13b PB |
3112 | |
3113 | fmt = NULL; | |
3114 | output = NULL; | |
3115 | for (;;) { | |
3116 | int option_index = 0; | |
3117 | static const struct option long_options[] = { | |
3118 | {"help", no_argument, 0, 'h'}, | |
3119 | {"format", required_argument, 0, 'f'}, | |
3120 | {"output", required_argument, 0, OPTION_OUTPUT}, | |
3babeb15 | 3121 | {"object", required_argument, 0, OPTION_OBJECT}, |
eb769f74 | 3122 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
335e9937 | 3123 | {"force-share", no_argument, 0, 'U'}, |
c0469496 EM |
3124 | {"start-offset", required_argument, 0, 's'}, |
3125 | {"max-length", required_argument, 0, 'l'}, | |
4c93a13b PB |
3126 | {0, 0, 0, 0} |
3127 | }; | |
c0469496 | 3128 | c = getopt_long(argc, argv, ":f:s:l:hU", |
4c93a13b PB |
3129 | long_options, &option_index); |
3130 | if (c == -1) { | |
3131 | break; | |
3132 | } | |
3133 | switch (c) { | |
c9192973 SH |
3134 | case ':': |
3135 | missing_argument(argv[optind - 1]); | |
3136 | break; | |
4c93a13b | 3137 | case '?': |
c9192973 SH |
3138 | unrecognized_option(argv[optind - 1]); |
3139 | break; | |
4c93a13b PB |
3140 | case 'h': |
3141 | help(); | |
3142 | break; | |
3143 | case 'f': | |
3144 | fmt = optarg; | |
3145 | break; | |
335e9937 FZ |
3146 | case 'U': |
3147 | force_share = true; | |
3148 | break; | |
4c93a13b PB |
3149 | case OPTION_OUTPUT: |
3150 | output = optarg; | |
3151 | break; | |
c0469496 EM |
3152 | case 's': |
3153 | start_offset = cvtnum("start offset", optarg); | |
3154 | if (start_offset < 0) { | |
3155 | return 1; | |
3156 | } | |
3157 | break; | |
3158 | case 'l': | |
3159 | max_length = cvtnum("max length", optarg); | |
3160 | if (max_length < 0) { | |
3161 | return 1; | |
3162 | } | |
3163 | break; | |
3babeb15 DB |
3164 | case OPTION_OBJECT: { |
3165 | QemuOpts *opts; | |
3166 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
3167 | optarg, true); | |
3168 | if (!opts) { | |
3169 | return 1; | |
3170 | } | |
3171 | } break; | |
eb769f74 DB |
3172 | case OPTION_IMAGE_OPTS: |
3173 | image_opts = true; | |
3174 | break; | |
4c93a13b PB |
3175 | } |
3176 | } | |
ac1307ab FZ |
3177 | if (optind != argc - 1) { |
3178 | error_exit("Expecting one image file name"); | |
4c93a13b | 3179 | } |
ac1307ab | 3180 | filename = argv[optind]; |
4c93a13b PB |
3181 | |
3182 | if (output && !strcmp(output, "json")) { | |
3183 | output_format = OFORMAT_JSON; | |
3184 | } else if (output && !strcmp(output, "human")) { | |
3185 | output_format = OFORMAT_HUMAN; | |
3186 | } else if (output) { | |
3187 | error_report("--output must be used with human or json as argument."); | |
3188 | return 1; | |
3189 | } | |
3190 | ||
3babeb15 DB |
3191 | if (qemu_opts_foreach(&qemu_object_opts, |
3192 | user_creatable_add_opts_foreach, | |
c6e5cdfd | 3193 | qemu_img_object_print_help, &error_fatal)) { |
3babeb15 DB |
3194 | return 1; |
3195 | } | |
3196 | ||
335e9937 | 3197 | blk = img_open(image_opts, filename, fmt, 0, false, false, force_share); |
7e7d56d9 MA |
3198 | if (!blk) { |
3199 | return 1; | |
4c93a13b | 3200 | } |
7e7d56d9 | 3201 | bs = blk_bs(blk); |
4c93a13b PB |
3202 | |
3203 | if (output_format == OFORMAT_HUMAN) { | |
3204 | printf("%-16s%-16s%-16s%s\n", "Offset", "Length", "Mapped to", "File"); | |
e46c0b18 EM |
3205 | } else if (output_format == OFORMAT_JSON) { |
3206 | putchar('['); | |
4c93a13b PB |
3207 | } |
3208 | ||
f1d3cd79 | 3209 | length = blk_getlength(blk); |
8f282e83 EM |
3210 | if (length < 0) { |
3211 | error_report("Failed to get size for '%s'", filename); | |
3212 | return 1; | |
3213 | } | |
c0469496 EM |
3214 | if (max_length != -1) { |
3215 | length = MIN(start_offset + max_length, length); | |
3216 | } | |
8f282e83 | 3217 | |
c0469496 | 3218 | curr.start = start_offset; |
4c93a13b | 3219 | while (curr.start + curr.length < length) { |
5e344dd8 EB |
3220 | int64_t offset = curr.start + curr.length; |
3221 | int64_t n; | |
4c93a13b PB |
3222 | |
3223 | /* Probe up to 1 GiB at a time. */ | |
97ede57a | 3224 | n = MIN(1 * GiB, length - offset); |
5e344dd8 | 3225 | ret = get_block_status(bs, offset, n, &next); |
4c93a13b PB |
3226 | |
3227 | if (ret < 0) { | |
3228 | error_report("Could not read file metadata: %s", strerror(-ret)); | |
3229 | goto out; | |
3230 | } | |
3231 | ||
16b0d555 | 3232 | if (entry_mergeable(&curr, &next)) { |
4c93a13b PB |
3233 | curr.length += next.length; |
3234 | continue; | |
3235 | } | |
3236 | ||
3237 | if (curr.length > 0) { | |
30065d14 EB |
3238 | ret = dump_map_entry(output_format, &curr, &next); |
3239 | if (ret < 0) { | |
3240 | goto out; | |
3241 | } | |
4c93a13b PB |
3242 | } |
3243 | curr = next; | |
3244 | } | |
3245 | ||
30065d14 | 3246 | ret = dump_map_entry(output_format, &curr, NULL); |
e46c0b18 EM |
3247 | if (output_format == OFORMAT_JSON) { |
3248 | puts("]"); | |
3249 | } | |
4c93a13b PB |
3250 | |
3251 | out: | |
26f54e9a | 3252 | blk_unref(blk); |
4c93a13b PB |
3253 | return ret < 0; |
3254 | } | |
3255 | ||
f7b4a940 AL |
3256 | #define SNAPSHOT_LIST 1 |
3257 | #define SNAPSHOT_CREATE 2 | |
3258 | #define SNAPSHOT_APPLY 3 | |
3259 | #define SNAPSHOT_DELETE 4 | |
3260 | ||
153859be | 3261 | static int img_snapshot(int argc, char **argv) |
f7b4a940 | 3262 | { |
26f54e9a | 3263 | BlockBackend *blk; |
f7b4a940 AL |
3264 | BlockDriverState *bs; |
3265 | QEMUSnapshotInfo sn; | |
3266 | char *filename, *snapshot_name = NULL; | |
c2abccec | 3267 | int c, ret = 0, bdrv_oflags; |
f7b4a940 AL |
3268 | int action = 0; |
3269 | qemu_timeval tv; | |
f382d43a | 3270 | bool quiet = false; |
a89d89d3 | 3271 | Error *err = NULL; |
eb769f74 | 3272 | bool image_opts = false; |
335e9937 | 3273 | bool force_share = false; |
f7b4a940 | 3274 | |
ce099547 | 3275 | bdrv_oflags = BDRV_O_RDWR; |
f7b4a940 AL |
3276 | /* Parse commandline parameters */ |
3277 | for(;;) { | |
3babeb15 DB |
3278 | static const struct option long_options[] = { |
3279 | {"help", no_argument, 0, 'h'}, | |
3280 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 3281 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
335e9937 | 3282 | {"force-share", no_argument, 0, 'U'}, |
3babeb15 DB |
3283 | {0, 0, 0, 0} |
3284 | }; | |
335e9937 | 3285 | c = getopt_long(argc, argv, ":la:c:d:hqU", |
3babeb15 | 3286 | long_options, NULL); |
b8fb60da | 3287 | if (c == -1) { |
f7b4a940 | 3288 | break; |
b8fb60da | 3289 | } |
f7b4a940 | 3290 | switch(c) { |
c9192973 SH |
3291 | case ':': |
3292 | missing_argument(argv[optind - 1]); | |
3293 | break; | |
ef87394c | 3294 | case '?': |
c9192973 SH |
3295 | unrecognized_option(argv[optind - 1]); |
3296 | break; | |
f7b4a940 AL |
3297 | case 'h': |
3298 | help(); | |
153859be | 3299 | return 0; |
f7b4a940 AL |
3300 | case 'l': |
3301 | if (action) { | |
ac1307ab | 3302 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 3303 | return 0; |
f7b4a940 AL |
3304 | } |
3305 | action = SNAPSHOT_LIST; | |
f5edb014 | 3306 | bdrv_oflags &= ~BDRV_O_RDWR; /* no need for RW */ |
f7b4a940 AL |
3307 | break; |
3308 | case 'a': | |
3309 | if (action) { | |
ac1307ab | 3310 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 3311 | return 0; |
f7b4a940 AL |
3312 | } |
3313 | action = SNAPSHOT_APPLY; | |
3314 | snapshot_name = optarg; | |
3315 | break; | |
3316 | case 'c': | |
3317 | if (action) { | |
ac1307ab | 3318 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 3319 | return 0; |
f7b4a940 AL |
3320 | } |
3321 | action = SNAPSHOT_CREATE; | |
3322 | snapshot_name = optarg; | |
3323 | break; | |
3324 | case 'd': | |
3325 | if (action) { | |
ac1307ab | 3326 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 3327 | return 0; |
f7b4a940 AL |
3328 | } |
3329 | action = SNAPSHOT_DELETE; | |
3330 | snapshot_name = optarg; | |
3331 | break; | |
f382d43a MR |
3332 | case 'q': |
3333 | quiet = true; | |
3334 | break; | |
335e9937 FZ |
3335 | case 'U': |
3336 | force_share = true; | |
3337 | break; | |
3babeb15 DB |
3338 | case OPTION_OBJECT: { |
3339 | QemuOpts *opts; | |
3340 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
3341 | optarg, true); | |
3342 | if (!opts) { | |
3343 | return 1; | |
3344 | } | |
3345 | } break; | |
eb769f74 DB |
3346 | case OPTION_IMAGE_OPTS: |
3347 | image_opts = true; | |
3348 | break; | |
f7b4a940 AL |
3349 | } |
3350 | } | |
3351 | ||
fc11eb26 | 3352 | if (optind != argc - 1) { |
ac1307ab | 3353 | error_exit("Expecting one image file name"); |
b8fb60da | 3354 | } |
f7b4a940 AL |
3355 | filename = argv[optind++]; |
3356 | ||
3babeb15 DB |
3357 | if (qemu_opts_foreach(&qemu_object_opts, |
3358 | user_creatable_add_opts_foreach, | |
c6e5cdfd | 3359 | qemu_img_object_print_help, &error_fatal)) { |
3babeb15 DB |
3360 | return 1; |
3361 | } | |
3362 | ||
f7b4a940 | 3363 | /* Open the image */ |
335e9937 FZ |
3364 | blk = img_open(image_opts, filename, NULL, bdrv_oflags, false, quiet, |
3365 | force_share); | |
7e7d56d9 MA |
3366 | if (!blk) { |
3367 | return 1; | |
c2abccec | 3368 | } |
7e7d56d9 | 3369 | bs = blk_bs(blk); |
f7b4a940 AL |
3370 | |
3371 | /* Perform the requested action */ | |
3372 | switch(action) { | |
3373 | case SNAPSHOT_LIST: | |
3374 | dump_snapshots(bs); | |
3375 | break; | |
3376 | ||
3377 | case SNAPSHOT_CREATE: | |
3378 | memset(&sn, 0, sizeof(sn)); | |
3379 | pstrcpy(sn.name, sizeof(sn.name), snapshot_name); | |
3380 | ||
3381 | qemu_gettimeofday(&tv); | |
3382 | sn.date_sec = tv.tv_sec; | |
3383 | sn.date_nsec = tv.tv_usec * 1000; | |
3384 | ||
3385 | ret = bdrv_snapshot_create(bs, &sn); | |
b8fb60da | 3386 | if (ret) { |
15654a6d | 3387 | error_report("Could not create snapshot '%s': %d (%s)", |
f7b4a940 | 3388 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 3389 | } |
f7b4a940 AL |
3390 | break; |
3391 | ||
3392 | case SNAPSHOT_APPLY: | |
0b62bcbc | 3393 | ret = bdrv_snapshot_goto(bs, snapshot_name, &err); |
b8fb60da | 3394 | if (ret) { |
0b62bcbc KW |
3395 | error_reportf_err(err, "Could not apply snapshot '%s': ", |
3396 | snapshot_name); | |
b8fb60da | 3397 | } |
f7b4a940 AL |
3398 | break; |
3399 | ||
3400 | case SNAPSHOT_DELETE: | |
8c04093c DHB |
3401 | ret = bdrv_snapshot_find(bs, &sn, snapshot_name); |
3402 | if (ret < 0) { | |
3403 | error_report("Could not delete snapshot '%s': snapshot not " | |
3404 | "found", snapshot_name); | |
a89d89d3 | 3405 | ret = 1; |
8c04093c DHB |
3406 | } else { |
3407 | ret = bdrv_snapshot_delete(bs, sn.id_str, sn.name, &err); | |
3408 | if (ret < 0) { | |
3409 | error_reportf_err(err, "Could not delete snapshot '%s': ", | |
3410 | snapshot_name); | |
3411 | ret = 1; | |
3412 | } | |
b8fb60da | 3413 | } |
f7b4a940 AL |
3414 | break; |
3415 | } | |
3416 | ||
3417 | /* Cleanup */ | |
26f54e9a | 3418 | blk_unref(blk); |
c2abccec MK |
3419 | if (ret) { |
3420 | return 1; | |
3421 | } | |
153859be | 3422 | return 0; |
f7b4a940 AL |
3423 | } |
3424 | ||
3e85c6fd KW |
3425 | static int img_rebase(int argc, char **argv) |
3426 | { | |
26f54e9a | 3427 | BlockBackend *blk = NULL, *blk_old_backing = NULL, *blk_new_backing = NULL; |
396374ca PB |
3428 | uint8_t *buf_old = NULL; |
3429 | uint8_t *buf_new = NULL; | |
863cc78f | 3430 | BlockDriverState *bs = NULL, *prefix_chain_bs = NULL; |
3e85c6fd | 3431 | char *filename; |
40055951 HR |
3432 | const char *fmt, *cache, *src_cache, *out_basefmt, *out_baseimg; |
3433 | int c, flags, src_flags, ret; | |
ce099547 | 3434 | bool writethrough, src_writethrough; |
3e85c6fd | 3435 | int unsafe = 0; |
335e9937 | 3436 | bool force_share = false; |
6b837bc4 | 3437 | int progress = 0; |
f382d43a | 3438 | bool quiet = false; |
34b5d2c6 | 3439 | Error *local_err = NULL; |
eb769f74 | 3440 | bool image_opts = false; |
3e85c6fd KW |
3441 | |
3442 | /* Parse commandline parameters */ | |
e53dbee0 | 3443 | fmt = NULL; |
661a0f71 | 3444 | cache = BDRV_DEFAULT_CACHE; |
40055951 | 3445 | src_cache = BDRV_DEFAULT_CACHE; |
3e85c6fd KW |
3446 | out_baseimg = NULL; |
3447 | out_basefmt = NULL; | |
3e85c6fd | 3448 | for(;;) { |
3babeb15 DB |
3449 | static const struct option long_options[] = { |
3450 | {"help", no_argument, 0, 'h'}, | |
3451 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 3452 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
335e9937 | 3453 | {"force-share", no_argument, 0, 'U'}, |
3babeb15 DB |
3454 | {0, 0, 0, 0} |
3455 | }; | |
335e9937 | 3456 | c = getopt_long(argc, argv, ":hf:F:b:upt:T:qU", |
3babeb15 | 3457 | long_options, NULL); |
b8fb60da | 3458 | if (c == -1) { |
3e85c6fd | 3459 | break; |
b8fb60da | 3460 | } |
3e85c6fd | 3461 | switch(c) { |
c9192973 SH |
3462 | case ':': |
3463 | missing_argument(argv[optind - 1]); | |
3464 | break; | |
ef87394c | 3465 | case '?': |
c9192973 SH |
3466 | unrecognized_option(argv[optind - 1]); |
3467 | break; | |
3e85c6fd KW |
3468 | case 'h': |
3469 | help(); | |
3470 | return 0; | |
e53dbee0 KW |
3471 | case 'f': |
3472 | fmt = optarg; | |
3473 | break; | |
3e85c6fd KW |
3474 | case 'F': |
3475 | out_basefmt = optarg; | |
3476 | break; | |
3477 | case 'b': | |
3478 | out_baseimg = optarg; | |
3479 | break; | |
3480 | case 'u': | |
3481 | unsafe = 1; | |
3482 | break; | |
6b837bc4 JS |
3483 | case 'p': |
3484 | progress = 1; | |
3485 | break; | |
661a0f71 FS |
3486 | case 't': |
3487 | cache = optarg; | |
3488 | break; | |
40055951 HR |
3489 | case 'T': |
3490 | src_cache = optarg; | |
3491 | break; | |
f382d43a MR |
3492 | case 'q': |
3493 | quiet = true; | |
3494 | break; | |
3babeb15 DB |
3495 | case OPTION_OBJECT: { |
3496 | QemuOpts *opts; | |
3497 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
3498 | optarg, true); | |
3499 | if (!opts) { | |
3500 | return 1; | |
3501 | } | |
3502 | } break; | |
eb769f74 DB |
3503 | case OPTION_IMAGE_OPTS: |
3504 | image_opts = true; | |
3505 | break; | |
335e9937 FZ |
3506 | case 'U': |
3507 | force_share = true; | |
3508 | break; | |
3e85c6fd KW |
3509 | } |
3510 | } | |
3511 | ||
f382d43a MR |
3512 | if (quiet) { |
3513 | progress = 0; | |
3514 | } | |
3515 | ||
ac1307ab FZ |
3516 | if (optind != argc - 1) { |
3517 | error_exit("Expecting one image file name"); | |
3518 | } | |
3519 | if (!unsafe && !out_baseimg) { | |
3520 | error_exit("Must specify backing file (-b) or use unsafe mode (-u)"); | |
b8fb60da | 3521 | } |
3e85c6fd KW |
3522 | filename = argv[optind++]; |
3523 | ||
3babeb15 DB |
3524 | if (qemu_opts_foreach(&qemu_object_opts, |
3525 | user_creatable_add_opts_foreach, | |
c6e5cdfd | 3526 | qemu_img_object_print_help, &error_fatal)) { |
3babeb15 DB |
3527 | return 1; |
3528 | } | |
3529 | ||
6b837bc4 JS |
3530 | qemu_progress_init(progress, 2.0); |
3531 | qemu_progress_print(0, 100); | |
3532 | ||
661a0f71 | 3533 | flags = BDRV_O_RDWR | (unsafe ? BDRV_O_NO_BACKING : 0); |
ce099547 | 3534 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); |
661a0f71 FS |
3535 | if (ret < 0) { |
3536 | error_report("Invalid cache option: %s", cache); | |
40ed35a3 | 3537 | goto out; |
661a0f71 FS |
3538 | } |
3539 | ||
ce099547 KW |
3540 | src_flags = 0; |
3541 | ret = bdrv_parse_cache_mode(src_cache, &src_flags, &src_writethrough); | |
40055951 HR |
3542 | if (ret < 0) { |
3543 | error_report("Invalid source cache option: %s", src_cache); | |
40ed35a3 | 3544 | goto out; |
40055951 HR |
3545 | } |
3546 | ||
ce099547 KW |
3547 | /* The source files are opened read-only, don't care about WCE */ |
3548 | assert((src_flags & BDRV_O_RDWR) == 0); | |
3549 | (void) src_writethrough; | |
3550 | ||
3e85c6fd KW |
3551 | /* |
3552 | * Open the images. | |
3553 | * | |
3554 | * Ignore the old backing file for unsafe rebase in case we want to correct | |
3555 | * the reference to a renamed or moved backing file. | |
3556 | */ | |
335e9937 FZ |
3557 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet, |
3558 | false); | |
7e7d56d9 | 3559 | if (!blk) { |
40ed35a3 SH |
3560 | ret = -1; |
3561 | goto out; | |
c2abccec | 3562 | } |
7e7d56d9 | 3563 | bs = blk_bs(blk); |
3e85c6fd | 3564 | |
3e85c6fd | 3565 | if (out_basefmt != NULL) { |
644483d9 | 3566 | if (bdrv_find_format(out_basefmt) == NULL) { |
15654a6d | 3567 | error_report("Invalid format name: '%s'", out_basefmt); |
c2abccec MK |
3568 | ret = -1; |
3569 | goto out; | |
3e85c6fd KW |
3570 | } |
3571 | } | |
3572 | ||
3573 | /* For safe rebasing we need to compare old and new backing file */ | |
40ed35a3 | 3574 | if (!unsafe) { |
644483d9 | 3575 | QDict *options = NULL; |
4ebe0617 | 3576 | BlockDriverState *base_bs = backing_bs(bs); |
644483d9 | 3577 | |
4ebe0617 | 3578 | if (base_bs) { |
d861ab3a KW |
3579 | blk_old_backing = blk_new(qemu_get_aio_context(), |
3580 | BLK_PERM_CONSISTENT_READ, | |
4ebe0617 SE |
3581 | BLK_PERM_ALL); |
3582 | ret = blk_insert_bs(blk_old_backing, base_bs, | |
3583 | &local_err); | |
3584 | if (ret < 0) { | |
35ddd930 | 3585 | error_reportf_err(local_err, |
4ebe0617 SE |
3586 | "Could not reuse old backing file '%s': ", |
3587 | base_bs->filename); | |
35ddd930 HR |
3588 | goto out; |
3589 | } | |
3590 | } else { | |
3591 | blk_old_backing = NULL; | |
3e85c6fd | 3592 | } |
644483d9 | 3593 | |
a616673d | 3594 | if (out_baseimg[0]) { |
d16699b6 HR |
3595 | const char *overlay_filename; |
3596 | char *out_real_path; | |
3597 | ||
335e9937 | 3598 | options = qdict_new(); |
644483d9 | 3599 | if (out_basefmt) { |
46f5ac20 | 3600 | qdict_put_str(options, "driver", out_basefmt); |
335e9937 FZ |
3601 | } |
3602 | if (force_share) { | |
3603 | qdict_put_bool(options, BDRV_OPT_FORCE_SHARE, true); | |
644483d9 HR |
3604 | } |
3605 | ||
f30c66ba | 3606 | bdrv_refresh_filename(bs); |
d16699b6 HR |
3607 | overlay_filename = bs->exact_filename[0] ? bs->exact_filename |
3608 | : bs->filename; | |
645ae7d8 HR |
3609 | out_real_path = |
3610 | bdrv_get_full_backing_filename_from_filename(overlay_filename, | |
3611 | out_baseimg, | |
3612 | &local_err); | |
d16699b6 | 3613 | if (local_err) { |
f22356d9 | 3614 | qobject_unref(options); |
d16699b6 HR |
3615 | error_reportf_err(local_err, |
3616 | "Could not resolve backing filename: "); | |
3617 | ret = -1; | |
d16699b6 HR |
3618 | goto out; |
3619 | } | |
3620 | ||
863cc78f SE |
3621 | /* |
3622 | * Find out whether we rebase an image on top of a previous image | |
3623 | * in its chain. | |
3624 | */ | |
3625 | prefix_chain_bs = bdrv_find_backing_image(bs, out_real_path); | |
330c7295 | 3626 | if (prefix_chain_bs) { |
f22356d9 | 3627 | qobject_unref(options); |
330c7295 | 3628 | g_free(out_real_path); |
f22356d9 | 3629 | |
d861ab3a KW |
3630 | blk_new_backing = blk_new(qemu_get_aio_context(), |
3631 | BLK_PERM_CONSISTENT_READ, | |
330c7295 SE |
3632 | BLK_PERM_ALL); |
3633 | ret = blk_insert_bs(blk_new_backing, prefix_chain_bs, | |
3634 | &local_err); | |
3635 | if (ret < 0) { | |
3636 | error_reportf_err(local_err, | |
3637 | "Could not reuse backing file '%s': ", | |
3638 | out_baseimg); | |
3639 | goto out; | |
3640 | } | |
3641 | } else { | |
3642 | blk_new_backing = blk_new_open(out_real_path, NULL, | |
3643 | options, src_flags, &local_err); | |
3644 | g_free(out_real_path); | |
3645 | if (!blk_new_backing) { | |
3646 | error_reportf_err(local_err, | |
3647 | "Could not open new backing file '%s': ", | |
3648 | out_baseimg); | |
3649 | ret = -1; | |
3650 | goto out; | |
3651 | } | |
a616673d | 3652 | } |
3e85c6fd KW |
3653 | } |
3654 | } | |
3655 | ||
3656 | /* | |
3657 | * Check each unallocated cluster in the COW file. If it is unallocated, | |
3658 | * accesses go to the backing file. We must therefore compare this cluster | |
3659 | * in the old and new backing file, and if they differ we need to copy it | |
3660 | * from the old backing file into the COW file. | |
3661 | * | |
3662 | * If qemu-img crashes during this step, no harm is done. The content of | |
3663 | * the image is the same as the original one at any time. | |
3664 | */ | |
3665 | if (!unsafe) { | |
41536287 | 3666 | int64_t size; |
35ddd930 | 3667 | int64_t old_backing_size = 0; |
41536287 EB |
3668 | int64_t new_backing_size = 0; |
3669 | uint64_t offset; | |
3670 | int64_t n; | |
1f710495 | 3671 | float local_progress = 0; |
d6771bfa | 3672 | |
f1d3cd79 HR |
3673 | buf_old = blk_blockalign(blk, IO_BUF_SIZE); |
3674 | buf_new = blk_blockalign(blk, IO_BUF_SIZE); | |
3e85c6fd | 3675 | |
41536287 EB |
3676 | size = blk_getlength(blk); |
3677 | if (size < 0) { | |
52bf1e72 | 3678 | error_report("Could not get size of '%s': %s", |
41536287 | 3679 | filename, strerror(-size)); |
52bf1e72 MA |
3680 | ret = -1; |
3681 | goto out; | |
3682 | } | |
35ddd930 HR |
3683 | if (blk_old_backing) { |
3684 | old_backing_size = blk_getlength(blk_old_backing); | |
3685 | if (old_backing_size < 0) { | |
3686 | char backing_name[PATH_MAX]; | |
52bf1e72 | 3687 | |
35ddd930 HR |
3688 | bdrv_get_backing_filename(bs, backing_name, |
3689 | sizeof(backing_name)); | |
3690 | error_report("Could not get size of '%s': %s", | |
3691 | backing_name, strerror(-old_backing_size)); | |
3692 | ret = -1; | |
3693 | goto out; | |
3694 | } | |
52bf1e72 | 3695 | } |
f1d3cd79 | 3696 | if (blk_new_backing) { |
41536287 EB |
3697 | new_backing_size = blk_getlength(blk_new_backing); |
3698 | if (new_backing_size < 0) { | |
52bf1e72 | 3699 | error_report("Could not get size of '%s': %s", |
41536287 | 3700 | out_baseimg, strerror(-new_backing_size)); |
52bf1e72 MA |
3701 | ret = -1; |
3702 | goto out; | |
3703 | } | |
a616673d | 3704 | } |
3e85c6fd | 3705 | |
41536287 EB |
3706 | if (size != 0) { |
3707 | local_progress = (float)100 / (size / MIN(size, IO_BUF_SIZE)); | |
1f710495 KW |
3708 | } |
3709 | ||
41536287 | 3710 | for (offset = 0; offset < size; offset += n) { |
1c6e8779 HR |
3711 | bool buf_old_is_zero = false; |
3712 | ||
41536287 EB |
3713 | /* How many bytes can we handle with the next read? */ |
3714 | n = MIN(IO_BUF_SIZE, size - offset); | |
3e85c6fd KW |
3715 | |
3716 | /* If the cluster is allocated, we don't need to take action */ | |
41536287 | 3717 | ret = bdrv_is_allocated(bs, offset, n, &n); |
d663640c PB |
3718 | if (ret < 0) { |
3719 | error_report("error while reading image metadata: %s", | |
3720 | strerror(-ret)); | |
3721 | goto out; | |
3722 | } | |
cc60e327 | 3723 | if (ret) { |
3e85c6fd KW |
3724 | continue; |
3725 | } | |
3726 | ||
863cc78f SE |
3727 | if (prefix_chain_bs) { |
3728 | /* | |
3729 | * If cluster wasn't changed since prefix_chain, we don't need | |
3730 | * to take action | |
3731 | */ | |
3732 | ret = bdrv_is_allocated_above(backing_bs(bs), prefix_chain_bs, | |
170d3bd3 | 3733 | false, offset, n, &n); |
863cc78f SE |
3734 | if (ret < 0) { |
3735 | error_report("error while reading image metadata: %s", | |
3736 | strerror(-ret)); | |
3737 | goto out; | |
3738 | } | |
3739 | if (!ret) { | |
3740 | continue; | |
3741 | } | |
3742 | } | |
3743 | ||
87a1b3e3 KW |
3744 | /* |
3745 | * Read old and new backing file and take into consideration that | |
3746 | * backing files may be smaller than the COW image. | |
3747 | */ | |
41536287 EB |
3748 | if (offset >= old_backing_size) { |
3749 | memset(buf_old, 0, n); | |
1c6e8779 | 3750 | buf_old_is_zero = true; |
87a1b3e3 | 3751 | } else { |
41536287 EB |
3752 | if (offset + n > old_backing_size) { |
3753 | n = old_backing_size - offset; | |
87a1b3e3 KW |
3754 | } |
3755 | ||
41536287 | 3756 | ret = blk_pread(blk_old_backing, offset, buf_old, n); |
87a1b3e3 KW |
3757 | if (ret < 0) { |
3758 | error_report("error while reading from old backing file"); | |
3759 | goto out; | |
3760 | } | |
3e85c6fd | 3761 | } |
87a1b3e3 | 3762 | |
41536287 EB |
3763 | if (offset >= new_backing_size || !blk_new_backing) { |
3764 | memset(buf_new, 0, n); | |
87a1b3e3 | 3765 | } else { |
41536287 EB |
3766 | if (offset + n > new_backing_size) { |
3767 | n = new_backing_size - offset; | |
87a1b3e3 KW |
3768 | } |
3769 | ||
41536287 | 3770 | ret = blk_pread(blk_new_backing, offset, buf_new, n); |
87a1b3e3 KW |
3771 | if (ret < 0) { |
3772 | error_report("error while reading from new backing file"); | |
3773 | goto out; | |
3774 | } | |
3e85c6fd KW |
3775 | } |
3776 | ||
3777 | /* If they differ, we need to write to the COW file */ | |
3778 | uint64_t written = 0; | |
3779 | ||
41536287 | 3780 | while (written < n) { |
dc61cd3b | 3781 | int64_t pnum; |
3e85c6fd | 3782 | |
41536287 EB |
3783 | if (compare_buffers(buf_old + written, buf_new + written, |
3784 | n - written, &pnum)) | |
3e85c6fd | 3785 | { |
1c6e8779 HR |
3786 | if (buf_old_is_zero) { |
3787 | ret = blk_pwrite_zeroes(blk, offset + written, pnum, 0); | |
3788 | } else { | |
3789 | ret = blk_pwrite(blk, offset + written, | |
3790 | buf_old + written, pnum, 0); | |
3791 | } | |
3e85c6fd | 3792 | if (ret < 0) { |
15654a6d | 3793 | error_report("Error while writing to COW image: %s", |
3e85c6fd | 3794 | strerror(-ret)); |
c2abccec | 3795 | goto out; |
3e85c6fd KW |
3796 | } |
3797 | } | |
3798 | ||
3799 | written += pnum; | |
3800 | } | |
6b837bc4 | 3801 | qemu_progress_print(local_progress, 100); |
3e85c6fd KW |
3802 | } |
3803 | } | |
3804 | ||
3805 | /* | |
3806 | * Change the backing file. All clusters that are different from the old | |
3807 | * backing file are overwritten in the COW file now, so the visible content | |
3808 | * doesn't change when we switch the backing file. | |
3809 | */ | |
a616673d AB |
3810 | if (out_baseimg && *out_baseimg) { |
3811 | ret = bdrv_change_backing_file(bs, out_baseimg, out_basefmt); | |
3812 | } else { | |
3813 | ret = bdrv_change_backing_file(bs, NULL, NULL); | |
3814 | } | |
3815 | ||
3e85c6fd | 3816 | if (ret == -ENOSPC) { |
15654a6d JS |
3817 | error_report("Could not change the backing file to '%s': No " |
3818 | "space left in the file header", out_baseimg); | |
3e85c6fd | 3819 | } else if (ret < 0) { |
15654a6d | 3820 | error_report("Could not change the backing file to '%s': %s", |
3e85c6fd KW |
3821 | out_baseimg, strerror(-ret)); |
3822 | } | |
3823 | ||
6b837bc4 | 3824 | qemu_progress_print(100, 0); |
3e85c6fd KW |
3825 | /* |
3826 | * TODO At this point it is possible to check if any clusters that are | |
3827 | * allocated in the COW file are the same in the backing file. If so, they | |
3828 | * could be dropped from the COW file. Don't do this before switching the | |
3829 | * backing file, in case of a crash this would lead to corruption. | |
3830 | */ | |
c2abccec | 3831 | out: |
6b837bc4 | 3832 | qemu_progress_end(); |
3e85c6fd KW |
3833 | /* Cleanup */ |
3834 | if (!unsafe) { | |
26f54e9a | 3835 | blk_unref(blk_old_backing); |
26f54e9a | 3836 | blk_unref(blk_new_backing); |
3e85c6fd | 3837 | } |
396374ca PB |
3838 | qemu_vfree(buf_old); |
3839 | qemu_vfree(buf_new); | |
3e85c6fd | 3840 | |
26f54e9a | 3841 | blk_unref(blk); |
c2abccec MK |
3842 | if (ret) { |
3843 | return 1; | |
3844 | } | |
3e85c6fd KW |
3845 | return 0; |
3846 | } | |
3847 | ||
ae6b0ed6 SH |
3848 | static int img_resize(int argc, char **argv) |
3849 | { | |
6750e795 | 3850 | Error *err = NULL; |
ae6b0ed6 SH |
3851 | int c, ret, relative; |
3852 | const char *filename, *fmt, *size; | |
09c5c6de | 3853 | int64_t n, total_size, current_size; |
f382d43a | 3854 | bool quiet = false; |
26f54e9a | 3855 | BlockBackend *blk = NULL; |
dc5f690b | 3856 | PreallocMode prealloc = PREALLOC_MODE_OFF; |
20caf0f7 | 3857 | QemuOpts *param; |
3babeb15 | 3858 | |
20caf0f7 DXW |
3859 | static QemuOptsList resize_options = { |
3860 | .name = "resize_options", | |
3861 | .head = QTAILQ_HEAD_INITIALIZER(resize_options.head), | |
3862 | .desc = { | |
3863 | { | |
3864 | .name = BLOCK_OPT_SIZE, | |
3865 | .type = QEMU_OPT_SIZE, | |
3866 | .help = "Virtual disk size" | |
3867 | }, { | |
3868 | /* end of list */ | |
3869 | } | |
ae6b0ed6 | 3870 | }, |
ae6b0ed6 | 3871 | }; |
eb769f74 | 3872 | bool image_opts = false; |
4ffca890 | 3873 | bool shrink = false; |
ae6b0ed6 | 3874 | |
e80fec7f KW |
3875 | /* Remove size from argv manually so that negative numbers are not treated |
3876 | * as options by getopt. */ | |
3877 | if (argc < 3) { | |
ac1307ab | 3878 | error_exit("Not enough arguments"); |
e80fec7f KW |
3879 | return 1; |
3880 | } | |
3881 | ||
3882 | size = argv[--argc]; | |
3883 | ||
3884 | /* Parse getopt arguments */ | |
ae6b0ed6 SH |
3885 | fmt = NULL; |
3886 | for(;;) { | |
3babeb15 DB |
3887 | static const struct option long_options[] = { |
3888 | {"help", no_argument, 0, 'h'}, | |
3889 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 3890 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
dc5f690b | 3891 | {"preallocation", required_argument, 0, OPTION_PREALLOCATION}, |
4ffca890 | 3892 | {"shrink", no_argument, 0, OPTION_SHRINK}, |
3babeb15 DB |
3893 | {0, 0, 0, 0} |
3894 | }; | |
c9192973 | 3895 | c = getopt_long(argc, argv, ":f:hq", |
3babeb15 | 3896 | long_options, NULL); |
ae6b0ed6 SH |
3897 | if (c == -1) { |
3898 | break; | |
3899 | } | |
3900 | switch(c) { | |
c9192973 SH |
3901 | case ':': |
3902 | missing_argument(argv[optind - 1]); | |
3903 | break; | |
ef87394c | 3904 | case '?': |
c9192973 SH |
3905 | unrecognized_option(argv[optind - 1]); |
3906 | break; | |
ae6b0ed6 SH |
3907 | case 'h': |
3908 | help(); | |
3909 | break; | |
3910 | case 'f': | |
3911 | fmt = optarg; | |
3912 | break; | |
f382d43a MR |
3913 | case 'q': |
3914 | quiet = true; | |
3915 | break; | |
3babeb15 DB |
3916 | case OPTION_OBJECT: { |
3917 | QemuOpts *opts; | |
3918 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
3919 | optarg, true); | |
3920 | if (!opts) { | |
3921 | return 1; | |
3922 | } | |
3923 | } break; | |
eb769f74 DB |
3924 | case OPTION_IMAGE_OPTS: |
3925 | image_opts = true; | |
3926 | break; | |
dc5f690b | 3927 | case OPTION_PREALLOCATION: |
f7abe0ec | 3928 | prealloc = qapi_enum_parse(&PreallocMode_lookup, optarg, |
06c60b6c | 3929 | PREALLOC_MODE__MAX, NULL); |
dc5f690b HR |
3930 | if (prealloc == PREALLOC_MODE__MAX) { |
3931 | error_report("Invalid preallocation mode '%s'", optarg); | |
3932 | return 1; | |
3933 | } | |
3934 | break; | |
4ffca890 PB |
3935 | case OPTION_SHRINK: |
3936 | shrink = true; | |
3937 | break; | |
ae6b0ed6 SH |
3938 | } |
3939 | } | |
fc11eb26 | 3940 | if (optind != argc - 1) { |
be8fbd47 | 3941 | error_exit("Expecting image file name and size"); |
ae6b0ed6 SH |
3942 | } |
3943 | filename = argv[optind++]; | |
ae6b0ed6 | 3944 | |
3babeb15 DB |
3945 | if (qemu_opts_foreach(&qemu_object_opts, |
3946 | user_creatable_add_opts_foreach, | |
c6e5cdfd | 3947 | qemu_img_object_print_help, &error_fatal)) { |
3babeb15 DB |
3948 | return 1; |
3949 | } | |
3950 | ||
ae6b0ed6 SH |
3951 | /* Choose grow, shrink, or absolute resize mode */ |
3952 | switch (size[0]) { | |
3953 | case '+': | |
3954 | relative = 1; | |
3955 | size++; | |
3956 | break; | |
3957 | case '-': | |
3958 | relative = -1; | |
3959 | size++; | |
3960 | break; | |
3961 | default: | |
3962 | relative = 0; | |
3963 | break; | |
3964 | } | |
3965 | ||
3966 | /* Parse size */ | |
87ea75d5 | 3967 | param = qemu_opts_create(&resize_options, NULL, 0, &error_abort); |
f43e47db | 3968 | qemu_opt_set(param, BLOCK_OPT_SIZE, size, &err); |
6750e795 MA |
3969 | if (err) { |
3970 | error_report_err(err); | |
2a81998a | 3971 | ret = -1; |
20caf0f7 | 3972 | qemu_opts_del(param); |
2a81998a | 3973 | goto out; |
ae6b0ed6 | 3974 | } |
20caf0f7 DXW |
3975 | n = qemu_opt_get_size(param, BLOCK_OPT_SIZE, 0); |
3976 | qemu_opts_del(param); | |
ae6b0ed6 | 3977 | |
efaa7c4e | 3978 | blk = img_open(image_opts, filename, fmt, |
335e9937 FZ |
3979 | BDRV_O_RDWR | BDRV_O_RESIZE, false, quiet, |
3980 | false); | |
7e7d56d9 | 3981 | if (!blk) { |
2a81998a JS |
3982 | ret = -1; |
3983 | goto out; | |
c2abccec | 3984 | } |
ae6b0ed6 | 3985 | |
dc5f690b HR |
3986 | current_size = blk_getlength(blk); |
3987 | if (current_size < 0) { | |
3988 | error_report("Failed to inquire current image length: %s", | |
3989 | strerror(-current_size)); | |
3990 | ret = -1; | |
3991 | goto out; | |
3992 | } | |
3993 | ||
ae6b0ed6 | 3994 | if (relative) { |
dc5f690b | 3995 | total_size = current_size + n * relative; |
ae6b0ed6 SH |
3996 | } else { |
3997 | total_size = n; | |
3998 | } | |
3999 | if (total_size <= 0) { | |
15654a6d | 4000 | error_report("New image size must be positive"); |
c2abccec MK |
4001 | ret = -1; |
4002 | goto out; | |
ae6b0ed6 SH |
4003 | } |
4004 | ||
dc5f690b HR |
4005 | if (total_size <= current_size && prealloc != PREALLOC_MODE_OFF) { |
4006 | error_report("Preallocation can only be used for growing images"); | |
4007 | ret = -1; | |
4008 | goto out; | |
4009 | } | |
4010 | ||
4ffca890 PB |
4011 | if (total_size < current_size && !shrink) { |
4012 | warn_report("Shrinking an image will delete all data beyond the " | |
4013 | "shrunken image's end. Before performing such an " | |
4014 | "operation, make sure there is no important data there."); | |
4015 | ||
4016 | if (g_strcmp0(bdrv_get_format_name(blk_bs(blk)), "raw") != 0) { | |
4017 | error_report( | |
4018 | "Use the --shrink option to perform a shrink operation."); | |
4019 | ret = -1; | |
4020 | goto out; | |
4021 | } else { | |
4022 | warn_report("Using the --shrink option will suppress this message. " | |
4023 | "Note that future versions of qemu-img may refuse to " | |
4024 | "shrink images without this option."); | |
4025 | } | |
4026 | } | |
4027 | ||
e8d04f92 HR |
4028 | /* |
4029 | * The user expects the image to have the desired size after | |
4030 | * resizing, so pass @exact=true. It is of no use to report | |
4031 | * success when the image has not actually been resized. | |
4032 | */ | |
8c6242b6 | 4033 | ret = blk_truncate(blk, total_size, true, prealloc, 0, &err); |
09c5c6de HR |
4034 | if (!ret) { |
4035 | qprintf(quiet, "Image resized.\n"); | |
4036 | } else { | |
ed3d2ec9 | 4037 | error_report_err(err); |
ae6b0ed6 | 4038 | } |
c2abccec | 4039 | out: |
26f54e9a | 4040 | blk_unref(blk); |
c2abccec MK |
4041 | if (ret) { |
4042 | return 1; | |
4043 | } | |
ae6b0ed6 SH |
4044 | return 0; |
4045 | } | |
4046 | ||
76a3a34d | 4047 | static void amend_status_cb(BlockDriverState *bs, |
8b13976d HR |
4048 | int64_t offset, int64_t total_work_size, |
4049 | void *opaque) | |
76a3a34d HR |
4050 | { |
4051 | qemu_progress_print(100.f * offset / total_work_size, 0); | |
4052 | } | |
4053 | ||
51641351 HR |
4054 | static int print_amend_option_help(const char *format) |
4055 | { | |
4056 | BlockDriver *drv; | |
4057 | ||
4058 | /* Find driver and parse its options */ | |
4059 | drv = bdrv_find_format(format); | |
4060 | if (!drv) { | |
4061 | error_report("Unknown file format '%s'", format); | |
4062 | return 1; | |
4063 | } | |
4064 | ||
4065 | if (!drv->bdrv_amend_options) { | |
4066 | error_report("Format driver '%s' does not support option amendment", | |
4067 | format); | |
4068 | return 1; | |
4069 | } | |
4070 | ||
4071 | /* Every driver supporting amendment must have create_opts */ | |
4072 | assert(drv->create_opts); | |
4073 | ||
4074 | printf("Creation options for '%s':\n", format); | |
63898712 | 4075 | qemu_opts_print_help(drv->create_opts, false); |
51641351 HR |
4076 | printf("\nNote that not all of these options may be amendable.\n"); |
4077 | return 0; | |
4078 | } | |
4079 | ||
6f176b48 HR |
4080 | static int img_amend(int argc, char **argv) |
4081 | { | |
dc523cd3 | 4082 | Error *err = NULL; |
6f176b48 HR |
4083 | int c, ret = 0; |
4084 | char *options = NULL; | |
83d0521a CL |
4085 | QemuOptsList *create_opts = NULL; |
4086 | QemuOpts *opts = NULL; | |
bd39e6ed HR |
4087 | const char *fmt = NULL, *filename, *cache; |
4088 | int flags; | |
ce099547 | 4089 | bool writethrough; |
76a3a34d | 4090 | bool quiet = false, progress = false; |
26f54e9a | 4091 | BlockBackend *blk = NULL; |
6f176b48 | 4092 | BlockDriverState *bs = NULL; |
eb769f74 | 4093 | bool image_opts = false; |
a3579bfa | 4094 | bool force = false; |
6f176b48 | 4095 | |
bd39e6ed | 4096 | cache = BDRV_DEFAULT_CACHE; |
6f176b48 | 4097 | for (;;) { |
3babeb15 DB |
4098 | static const struct option long_options[] = { |
4099 | {"help", no_argument, 0, 'h'}, | |
4100 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 4101 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
a3579bfa | 4102 | {"force", no_argument, 0, OPTION_FORCE}, |
3babeb15 DB |
4103 | {0, 0, 0, 0} |
4104 | }; | |
c9192973 | 4105 | c = getopt_long(argc, argv, ":ho:f:t:pq", |
3babeb15 | 4106 | long_options, NULL); |
6f176b48 HR |
4107 | if (c == -1) { |
4108 | break; | |
4109 | } | |
4110 | ||
4111 | switch (c) { | |
c9192973 SH |
4112 | case ':': |
4113 | missing_argument(argv[optind - 1]); | |
4114 | break; | |
f7077624 | 4115 | case '?': |
c9192973 SH |
4116 | unrecognized_option(argv[optind - 1]); |
4117 | break; | |
4118 | case 'h': | |
f7077624 SH |
4119 | help(); |
4120 | break; | |
4121 | case 'o': | |
6d2b5cba | 4122 | if (accumulate_options(&options, optarg) < 0) { |
f7077624 SH |
4123 | ret = -1; |
4124 | goto out_no_progress; | |
4125 | } | |
f7077624 SH |
4126 | break; |
4127 | case 'f': | |
4128 | fmt = optarg; | |
4129 | break; | |
4130 | case 't': | |
4131 | cache = optarg; | |
4132 | break; | |
4133 | case 'p': | |
4134 | progress = true; | |
4135 | break; | |
4136 | case 'q': | |
4137 | quiet = true; | |
4138 | break; | |
4139 | case OPTION_OBJECT: | |
4140 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
4141 | optarg, true); | |
4142 | if (!opts) { | |
4143 | ret = -1; | |
4144 | goto out_no_progress; | |
4145 | } | |
4146 | break; | |
4147 | case OPTION_IMAGE_OPTS: | |
4148 | image_opts = true; | |
4149 | break; | |
a3579bfa ML |
4150 | case OPTION_FORCE: |
4151 | force = true; | |
4152 | break; | |
6f176b48 HR |
4153 | } |
4154 | } | |
4155 | ||
a283cb6e | 4156 | if (!options) { |
ac1307ab | 4157 | error_exit("Must specify options (-o)"); |
6f176b48 HR |
4158 | } |
4159 | ||
3babeb15 DB |
4160 | if (qemu_opts_foreach(&qemu_object_opts, |
4161 | user_creatable_add_opts_foreach, | |
c6e5cdfd | 4162 | qemu_img_object_print_help, &error_fatal)) { |
3babeb15 DB |
4163 | ret = -1; |
4164 | goto out_no_progress; | |
4165 | } | |
4166 | ||
76a3a34d HR |
4167 | if (quiet) { |
4168 | progress = false; | |
4169 | } | |
4170 | qemu_progress_init(progress, 1.0); | |
4171 | ||
a283cb6e KW |
4172 | filename = (optind == argc - 1) ? argv[argc - 1] : NULL; |
4173 | if (fmt && has_help_option(options)) { | |
4174 | /* If a format is explicitly specified (and possibly no filename is | |
4175 | * given), print option help here */ | |
51641351 | 4176 | ret = print_amend_option_help(fmt); |
a283cb6e | 4177 | goto out; |
6f176b48 HR |
4178 | } |
4179 | ||
a283cb6e | 4180 | if (optind != argc - 1) { |
b2f27e44 HR |
4181 | error_report("Expecting one image file name"); |
4182 | ret = -1; | |
4183 | goto out; | |
a283cb6e | 4184 | } |
6f176b48 | 4185 | |
ce099547 KW |
4186 | flags = BDRV_O_RDWR; |
4187 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); | |
bd39e6ed HR |
4188 | if (ret < 0) { |
4189 | error_report("Invalid cache option: %s", cache); | |
4190 | goto out; | |
4191 | } | |
4192 | ||
335e9937 FZ |
4193 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet, |
4194 | false); | |
7e7d56d9 | 4195 | if (!blk) { |
6f176b48 HR |
4196 | ret = -1; |
4197 | goto out; | |
4198 | } | |
7e7d56d9 | 4199 | bs = blk_bs(blk); |
6f176b48 HR |
4200 | |
4201 | fmt = bs->drv->format_name; | |
4202 | ||
626f84f3 | 4203 | if (has_help_option(options)) { |
a283cb6e | 4204 | /* If the format was auto-detected, print option help here */ |
51641351 | 4205 | ret = print_amend_option_help(fmt); |
6f176b48 HR |
4206 | goto out; |
4207 | } | |
4208 | ||
1f996683 HR |
4209 | if (!bs->drv->bdrv_amend_options) { |
4210 | error_report("Format driver '%s' does not support option amendment", | |
b2439d26 HR |
4211 | fmt); |
4212 | ret = -1; | |
4213 | goto out; | |
4214 | } | |
4215 | ||
1f996683 HR |
4216 | /* Every driver supporting amendment must have create_opts */ |
4217 | assert(bs->drv->create_opts); | |
4218 | ||
c282e1fd | 4219 | create_opts = qemu_opts_append(create_opts, bs->drv->create_opts); |
83d0521a | 4220 | opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); |
ece9086e PB |
4221 | qemu_opts_do_parse(opts, options, NULL, &err); |
4222 | if (err) { | |
4223 | error_report_err(err); | |
4224 | ret = -1; | |
4225 | goto out; | |
6f176b48 HR |
4226 | } |
4227 | ||
76a3a34d HR |
4228 | /* In case the driver does not call amend_status_cb() */ |
4229 | qemu_progress_print(0.f, 0); | |
a3579bfa | 4230 | ret = bdrv_amend_options(bs, opts, &amend_status_cb, NULL, force, &err); |
76a3a34d | 4231 | qemu_progress_print(100.f, 0); |
6f176b48 | 4232 | if (ret < 0) { |
d1402b50 | 4233 | error_report_err(err); |
6f176b48 HR |
4234 | goto out; |
4235 | } | |
4236 | ||
4237 | out: | |
76a3a34d HR |
4238 | qemu_progress_end(); |
4239 | ||
e814dffc | 4240 | out_no_progress: |
26f54e9a | 4241 | blk_unref(blk); |
83d0521a CL |
4242 | qemu_opts_del(opts); |
4243 | qemu_opts_free(create_opts); | |
626f84f3 KW |
4244 | g_free(options); |
4245 | ||
6f176b48 HR |
4246 | if (ret) { |
4247 | return 1; | |
4248 | } | |
4249 | return 0; | |
4250 | } | |
4251 | ||
b6133b8c KW |
4252 | typedef struct BenchData { |
4253 | BlockBackend *blk; | |
4254 | uint64_t image_size; | |
b6495fa8 | 4255 | bool write; |
b6133b8c | 4256 | int bufsize; |
83de9be0 | 4257 | int step; |
b6133b8c KW |
4258 | int nrreq; |
4259 | int n; | |
55d539c8 KW |
4260 | int flush_interval; |
4261 | bool drain_on_flush; | |
b6133b8c KW |
4262 | uint8_t *buf; |
4263 | QEMUIOVector *qiov; | |
4264 | ||
4265 | int in_flight; | |
55d539c8 | 4266 | bool in_flush; |
b6133b8c KW |
4267 | uint64_t offset; |
4268 | } BenchData; | |
4269 | ||
55d539c8 KW |
4270 | static void bench_undrained_flush_cb(void *opaque, int ret) |
4271 | { | |
4272 | if (ret < 0) { | |
df3c286c | 4273 | error_report("Failed flush request: %s", strerror(-ret)); |
55d539c8 KW |
4274 | exit(EXIT_FAILURE); |
4275 | } | |
4276 | } | |
4277 | ||
b6133b8c KW |
4278 | static void bench_cb(void *opaque, int ret) |
4279 | { | |
4280 | BenchData *b = opaque; | |
4281 | BlockAIOCB *acb; | |
4282 | ||
4283 | if (ret < 0) { | |
df3c286c | 4284 | error_report("Failed request: %s", strerror(-ret)); |
b6133b8c KW |
4285 | exit(EXIT_FAILURE); |
4286 | } | |
55d539c8 KW |
4287 | |
4288 | if (b->in_flush) { | |
4289 | /* Just finished a flush with drained queue: Start next requests */ | |
4290 | assert(b->in_flight == 0); | |
4291 | b->in_flush = false; | |
4292 | } else if (b->in_flight > 0) { | |
4293 | int remaining = b->n - b->in_flight; | |
4294 | ||
b6133b8c KW |
4295 | b->n--; |
4296 | b->in_flight--; | |
55d539c8 KW |
4297 | |
4298 | /* Time for flush? Drain queue if requested, then flush */ | |
4299 | if (b->flush_interval && remaining % b->flush_interval == 0) { | |
4300 | if (!b->in_flight || !b->drain_on_flush) { | |
4301 | BlockCompletionFunc *cb; | |
4302 | ||
4303 | if (b->drain_on_flush) { | |
4304 | b->in_flush = true; | |
4305 | cb = bench_cb; | |
4306 | } else { | |
4307 | cb = bench_undrained_flush_cb; | |
4308 | } | |
4309 | ||
4310 | acb = blk_aio_flush(b->blk, cb, b); | |
4311 | if (!acb) { | |
4312 | error_report("Failed to issue flush request"); | |
4313 | exit(EXIT_FAILURE); | |
4314 | } | |
4315 | } | |
4316 | if (b->drain_on_flush) { | |
4317 | return; | |
4318 | } | |
4319 | } | |
b6133b8c KW |
4320 | } |
4321 | ||
4322 | while (b->n > b->in_flight && b->in_flight < b->nrreq) { | |
4baaa8c3 PB |
4323 | int64_t offset = b->offset; |
4324 | /* blk_aio_* might look for completed I/Os and kick bench_cb | |
4325 | * again, so make sure this operation is counted by in_flight | |
4326 | * and b->offset is ready for the next submission. | |
4327 | */ | |
4328 | b->in_flight++; | |
4329 | b->offset += b->step; | |
4330 | b->offset %= b->image_size; | |
b6495fa8 | 4331 | if (b->write) { |
4baaa8c3 | 4332 | acb = blk_aio_pwritev(b->blk, offset, b->qiov, 0, bench_cb, b); |
b6495fa8 | 4333 | } else { |
4baaa8c3 | 4334 | acb = blk_aio_preadv(b->blk, offset, b->qiov, 0, bench_cb, b); |
b6495fa8 | 4335 | } |
b6133b8c KW |
4336 | if (!acb) { |
4337 | error_report("Failed to issue request"); | |
4338 | exit(EXIT_FAILURE); | |
4339 | } | |
b6133b8c KW |
4340 | } |
4341 | } | |
4342 | ||
4343 | static int img_bench(int argc, char **argv) | |
4344 | { | |
4345 | int c, ret = 0; | |
4346 | const char *fmt = NULL, *filename; | |
4347 | bool quiet = false; | |
4348 | bool image_opts = false; | |
b6495fa8 | 4349 | bool is_write = false; |
b6133b8c KW |
4350 | int count = 75000; |
4351 | int depth = 64; | |
d3199a31 | 4352 | int64_t offset = 0; |
b6133b8c | 4353 | size_t bufsize = 4096; |
b6495fa8 | 4354 | int pattern = 0; |
83de9be0 | 4355 | size_t step = 0; |
55d539c8 KW |
4356 | int flush_interval = 0; |
4357 | bool drain_on_flush = true; | |
b6133b8c KW |
4358 | int64_t image_size; |
4359 | BlockBackend *blk = NULL; | |
4360 | BenchData data = {}; | |
4361 | int flags = 0; | |
604e8613 | 4362 | bool writethrough = false; |
b6133b8c KW |
4363 | struct timeval t1, t2; |
4364 | int i; | |
335e9937 | 4365 | bool force_share = false; |
79d46583 | 4366 | size_t buf_size; |
b6133b8c KW |
4367 | |
4368 | for (;;) { | |
4369 | static const struct option long_options[] = { | |
4370 | {"help", no_argument, 0, 'h'}, | |
55d539c8 | 4371 | {"flush-interval", required_argument, 0, OPTION_FLUSH_INTERVAL}, |
b6133b8c | 4372 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
b6495fa8 | 4373 | {"pattern", required_argument, 0, OPTION_PATTERN}, |
55d539c8 | 4374 | {"no-drain", no_argument, 0, OPTION_NO_DRAIN}, |
335e9937 | 4375 | {"force-share", no_argument, 0, 'U'}, |
b6133b8c KW |
4376 | {0, 0, 0, 0} |
4377 | }; | |
cdd26774 AM |
4378 | c = getopt_long(argc, argv, ":hc:d:f:ni:o:qs:S:t:wU", long_options, |
4379 | NULL); | |
b6133b8c KW |
4380 | if (c == -1) { |
4381 | break; | |
4382 | } | |
4383 | ||
4384 | switch (c) { | |
c9192973 SH |
4385 | case ':': |
4386 | missing_argument(argv[optind - 1]); | |
4387 | break; | |
b6133b8c | 4388 | case '?': |
c9192973 SH |
4389 | unrecognized_option(argv[optind - 1]); |
4390 | break; | |
4391 | case 'h': | |
b6133b8c KW |
4392 | help(); |
4393 | break; | |
4394 | case 'c': | |
4395 | { | |
8b3c6792 PM |
4396 | unsigned long res; |
4397 | ||
4398 | if (qemu_strtoul(optarg, NULL, 0, &res) < 0 || res > INT_MAX) { | |
b6133b8c KW |
4399 | error_report("Invalid request count specified"); |
4400 | return 1; | |
4401 | } | |
8b3c6792 | 4402 | count = res; |
b6133b8c KW |
4403 | break; |
4404 | } | |
4405 | case 'd': | |
4406 | { | |
8b3c6792 PM |
4407 | unsigned long res; |
4408 | ||
4409 | if (qemu_strtoul(optarg, NULL, 0, &res) < 0 || res > INT_MAX) { | |
b6133b8c KW |
4410 | error_report("Invalid queue depth specified"); |
4411 | return 1; | |
4412 | } | |
8b3c6792 | 4413 | depth = res; |
b6133b8c KW |
4414 | break; |
4415 | } | |
4416 | case 'f': | |
4417 | fmt = optarg; | |
4418 | break; | |
4419 | case 'n': | |
4420 | flags |= BDRV_O_NATIVE_AIO; | |
4421 | break; | |
cdd26774 AM |
4422 | case 'i': |
4423 | ret = bdrv_parse_aio(optarg, &flags); | |
4424 | if (ret < 0) { | |
4425 | error_report("Invalid aio option: %s", optarg); | |
4426 | ret = -1; | |
4427 | goto out; | |
4428 | } | |
4429 | break; | |
d3199a31 KW |
4430 | case 'o': |
4431 | { | |
43d589b0 | 4432 | offset = cvtnum("offset", optarg); |
606caa0a | 4433 | if (offset < 0) { |
d3199a31 KW |
4434 | return 1; |
4435 | } | |
4436 | break; | |
4437 | } | |
4438 | break; | |
b6133b8c KW |
4439 | case 'q': |
4440 | quiet = true; | |
4441 | break; | |
4442 | case 's': | |
4443 | { | |
4444 | int64_t sval; | |
b6133b8c | 4445 | |
43d589b0 EM |
4446 | sval = cvtnum_full("buffer size", optarg, 0, INT_MAX); |
4447 | if (sval < 0) { | |
b6133b8c KW |
4448 | return 1; |
4449 | } | |
4450 | ||
4451 | bufsize = sval; | |
4452 | break; | |
4453 | } | |
83de9be0 KW |
4454 | case 'S': |
4455 | { | |
4456 | int64_t sval; | |
83de9be0 | 4457 | |
43d589b0 EM |
4458 | sval = cvtnum_full("step_size", optarg, 0, INT_MAX); |
4459 | if (sval < 0) { | |
83de9be0 KW |
4460 | return 1; |
4461 | } | |
4462 | ||
4463 | step = sval; | |
4464 | break; | |
4465 | } | |
b6133b8c KW |
4466 | case 't': |
4467 | ret = bdrv_parse_cache_mode(optarg, &flags, &writethrough); | |
4468 | if (ret < 0) { | |
4469 | error_report("Invalid cache mode"); | |
4470 | ret = -1; | |
4471 | goto out; | |
4472 | } | |
4473 | break; | |
b6495fa8 KW |
4474 | case 'w': |
4475 | flags |= BDRV_O_RDWR; | |
4476 | is_write = true; | |
4477 | break; | |
335e9937 FZ |
4478 | case 'U': |
4479 | force_share = true; | |
4480 | break; | |
b6495fa8 KW |
4481 | case OPTION_PATTERN: |
4482 | { | |
8b3c6792 PM |
4483 | unsigned long res; |
4484 | ||
4485 | if (qemu_strtoul(optarg, NULL, 0, &res) < 0 || res > 0xff) { | |
b6495fa8 KW |
4486 | error_report("Invalid pattern byte specified"); |
4487 | return 1; | |
4488 | } | |
8b3c6792 | 4489 | pattern = res; |
b6495fa8 KW |
4490 | break; |
4491 | } | |
55d539c8 KW |
4492 | case OPTION_FLUSH_INTERVAL: |
4493 | { | |
8b3c6792 PM |
4494 | unsigned long res; |
4495 | ||
4496 | if (qemu_strtoul(optarg, NULL, 0, &res) < 0 || res > INT_MAX) { | |
55d539c8 KW |
4497 | error_report("Invalid flush interval specified"); |
4498 | return 1; | |
4499 | } | |
8b3c6792 | 4500 | flush_interval = res; |
55d539c8 KW |
4501 | break; |
4502 | } | |
4503 | case OPTION_NO_DRAIN: | |
4504 | drain_on_flush = false; | |
4505 | break; | |
b6133b8c KW |
4506 | case OPTION_IMAGE_OPTS: |
4507 | image_opts = true; | |
4508 | break; | |
4509 | } | |
4510 | } | |
4511 | ||
4512 | if (optind != argc - 1) { | |
4513 | error_exit("Expecting one image file name"); | |
4514 | } | |
4515 | filename = argv[argc - 1]; | |
4516 | ||
55d539c8 KW |
4517 | if (!is_write && flush_interval) { |
4518 | error_report("--flush-interval is only available in write tests"); | |
4519 | ret = -1; | |
4520 | goto out; | |
4521 | } | |
4522 | if (flush_interval && flush_interval < depth) { | |
4523 | error_report("Flush interval can't be smaller than depth"); | |
4524 | ret = -1; | |
4525 | goto out; | |
4526 | } | |
4527 | ||
335e9937 FZ |
4528 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet, |
4529 | force_share); | |
b6133b8c KW |
4530 | if (!blk) { |
4531 | ret = -1; | |
4532 | goto out; | |
4533 | } | |
4534 | ||
4535 | image_size = blk_getlength(blk); | |
4536 | if (image_size < 0) { | |
4537 | ret = image_size; | |
4538 | goto out; | |
4539 | } | |
4540 | ||
4541 | data = (BenchData) { | |
55d539c8 KW |
4542 | .blk = blk, |
4543 | .image_size = image_size, | |
4544 | .bufsize = bufsize, | |
4545 | .step = step ?: bufsize, | |
4546 | .nrreq = depth, | |
4547 | .n = count, | |
4548 | .offset = offset, | |
4549 | .write = is_write, | |
4550 | .flush_interval = flush_interval, | |
4551 | .drain_on_flush = drain_on_flush, | |
b6133b8c | 4552 | }; |
d3199a31 | 4553 | printf("Sending %d %s requests, %d bytes each, %d in parallel " |
83de9be0 | 4554 | "(starting at offset %" PRId64 ", step size %d)\n", |
d3199a31 | 4555 | data.n, data.write ? "write" : "read", data.bufsize, data.nrreq, |
83de9be0 | 4556 | data.offset, data.step); |
55d539c8 KW |
4557 | if (flush_interval) { |
4558 | printf("Sending flush every %d requests\n", flush_interval); | |
4559 | } | |
b6133b8c | 4560 | |
79d46583 FZ |
4561 | buf_size = data.nrreq * data.bufsize; |
4562 | data.buf = blk_blockalign(blk, buf_size); | |
b6495fa8 KW |
4563 | memset(data.buf, pattern, data.nrreq * data.bufsize); |
4564 | ||
79d46583 FZ |
4565 | blk_register_buf(blk, data.buf, buf_size); |
4566 | ||
b6133b8c KW |
4567 | data.qiov = g_new(QEMUIOVector, data.nrreq); |
4568 | for (i = 0; i < data.nrreq; i++) { | |
4569 | qemu_iovec_init(&data.qiov[i], 1); | |
4570 | qemu_iovec_add(&data.qiov[i], | |
4571 | data.buf + i * data.bufsize, data.bufsize); | |
4572 | } | |
4573 | ||
4574 | gettimeofday(&t1, NULL); | |
4575 | bench_cb(&data, 0); | |
4576 | ||
4577 | while (data.n > 0) { | |
4578 | main_loop_wait(false); | |
4579 | } | |
4580 | gettimeofday(&t2, NULL); | |
4581 | ||
4582 | printf("Run completed in %3.3f seconds.\n", | |
4583 | (t2.tv_sec - t1.tv_sec) | |
4584 | + ((double)(t2.tv_usec - t1.tv_usec) / 1000000)); | |
4585 | ||
4586 | out: | |
79d46583 FZ |
4587 | if (data.buf) { |
4588 | blk_unregister_buf(blk, data.buf); | |
4589 | } | |
b6133b8c KW |
4590 | qemu_vfree(data.buf); |
4591 | blk_unref(blk); | |
4592 | ||
4593 | if (ret) { | |
86ce1f6e RS |
4594 | return 1; |
4595 | } | |
4596 | return 0; | |
4597 | } | |
4598 | ||
3b51ab4b EB |
4599 | enum ImgBitmapAct { |
4600 | BITMAP_ADD, | |
4601 | BITMAP_REMOVE, | |
4602 | BITMAP_CLEAR, | |
4603 | BITMAP_ENABLE, | |
4604 | BITMAP_DISABLE, | |
4605 | BITMAP_MERGE, | |
4606 | }; | |
4607 | typedef struct ImgBitmapAction { | |
4608 | enum ImgBitmapAct act; | |
4609 | const char *src; /* only used for merge */ | |
4610 | QSIMPLEQ_ENTRY(ImgBitmapAction) next; | |
4611 | } ImgBitmapAction; | |
4612 | ||
4613 | static int img_bitmap(int argc, char **argv) | |
4614 | { | |
4615 | Error *err = NULL; | |
4616 | int c, ret = 1; | |
4617 | QemuOpts *opts = NULL; | |
4618 | const char *fmt = NULL, *src_fmt = NULL, *src_filename = NULL; | |
4619 | const char *filename, *bitmap; | |
4620 | BlockBackend *blk = NULL, *src = NULL; | |
4621 | BlockDriverState *bs = NULL, *src_bs = NULL; | |
4622 | bool image_opts = false; | |
4623 | int64_t granularity = 0; | |
4624 | bool add = false, merge = false; | |
4625 | QSIMPLEQ_HEAD(, ImgBitmapAction) actions; | |
4626 | ImgBitmapAction *act, *act_next; | |
4627 | const char *op; | |
4628 | ||
4629 | QSIMPLEQ_INIT(&actions); | |
4630 | ||
4631 | for (;;) { | |
4632 | static const struct option long_options[] = { | |
4633 | {"help", no_argument, 0, 'h'}, | |
4634 | {"object", required_argument, 0, OPTION_OBJECT}, | |
4635 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, | |
4636 | {"add", no_argument, 0, OPTION_ADD}, | |
4637 | {"remove", no_argument, 0, OPTION_REMOVE}, | |
4638 | {"clear", no_argument, 0, OPTION_CLEAR}, | |
4639 | {"enable", no_argument, 0, OPTION_ENABLE}, | |
4640 | {"disable", no_argument, 0, OPTION_DISABLE}, | |
4641 | {"merge", required_argument, 0, OPTION_MERGE}, | |
4642 | {"granularity", required_argument, 0, 'g'}, | |
4643 | {"source-file", required_argument, 0, 'b'}, | |
4644 | {"source-format", required_argument, 0, 'F'}, | |
4645 | {0, 0, 0, 0} | |
4646 | }; | |
4647 | c = getopt_long(argc, argv, ":b:f:F:g:h", long_options, NULL); | |
4648 | if (c == -1) { | |
4649 | break; | |
4650 | } | |
4651 | ||
4652 | switch (c) { | |
4653 | case ':': | |
4654 | missing_argument(argv[optind - 1]); | |
4655 | break; | |
4656 | case '?': | |
4657 | unrecognized_option(argv[optind - 1]); | |
4658 | break; | |
4659 | case 'h': | |
4660 | help(); | |
4661 | break; | |
4662 | case 'b': | |
4663 | src_filename = optarg; | |
4664 | break; | |
4665 | case 'f': | |
4666 | fmt = optarg; | |
4667 | break; | |
4668 | case 'F': | |
4669 | src_fmt = optarg; | |
4670 | break; | |
4671 | case 'g': | |
4672 | granularity = cvtnum("granularity", optarg); | |
4673 | if (granularity < 0) { | |
4674 | return 1; | |
4675 | } | |
4676 | break; | |
4677 | case OPTION_ADD: | |
4678 | act = g_new0(ImgBitmapAction, 1); | |
4679 | act->act = BITMAP_ADD; | |
4680 | QSIMPLEQ_INSERT_TAIL(&actions, act, next); | |
4681 | add = true; | |
4682 | break; | |
4683 | case OPTION_REMOVE: | |
4684 | act = g_new0(ImgBitmapAction, 1); | |
4685 | act->act = BITMAP_REMOVE; | |
4686 | QSIMPLEQ_INSERT_TAIL(&actions, act, next); | |
4687 | break; | |
4688 | case OPTION_CLEAR: | |
4689 | act = g_new0(ImgBitmapAction, 1); | |
4690 | act->act = BITMAP_CLEAR; | |
4691 | QSIMPLEQ_INSERT_TAIL(&actions, act, next); | |
4692 | break; | |
4693 | case OPTION_ENABLE: | |
4694 | act = g_new0(ImgBitmapAction, 1); | |
4695 | act->act = BITMAP_ENABLE; | |
4696 | QSIMPLEQ_INSERT_TAIL(&actions, act, next); | |
4697 | break; | |
4698 | case OPTION_DISABLE: | |
4699 | act = g_new0(ImgBitmapAction, 1); | |
4700 | act->act = BITMAP_DISABLE; | |
4701 | QSIMPLEQ_INSERT_TAIL(&actions, act, next); | |
4702 | break; | |
4703 | case OPTION_MERGE: | |
4704 | act = g_new0(ImgBitmapAction, 1); | |
4705 | act->act = BITMAP_MERGE; | |
4706 | act->src = optarg; | |
4707 | QSIMPLEQ_INSERT_TAIL(&actions, act, next); | |
4708 | merge = true; | |
4709 | break; | |
4710 | case OPTION_OBJECT: | |
4711 | opts = qemu_opts_parse_noisily(&qemu_object_opts, optarg, true); | |
4712 | if (!opts) { | |
4713 | goto out; | |
4714 | } | |
4715 | break; | |
4716 | case OPTION_IMAGE_OPTS: | |
4717 | image_opts = true; | |
4718 | break; | |
4719 | } | |
4720 | } | |
4721 | ||
4722 | if (qemu_opts_foreach(&qemu_object_opts, | |
4723 | user_creatable_add_opts_foreach, | |
4724 | qemu_img_object_print_help, &error_fatal)) { | |
4725 | goto out; | |
4726 | } | |
4727 | ||
4728 | if (QSIMPLEQ_EMPTY(&actions)) { | |
4729 | error_report("Need at least one of --add, --remove, --clear, " | |
4730 | "--enable, --disable, or --merge"); | |
4731 | goto out; | |
4732 | } | |
4733 | ||
4734 | if (granularity && !add) { | |
4735 | error_report("granularity only supported with --add"); | |
4736 | goto out; | |
4737 | } | |
4738 | if (src_fmt && !src_filename) { | |
4739 | error_report("-F only supported with -b"); | |
4740 | goto out; | |
4741 | } | |
4742 | if (src_filename && !merge) { | |
4743 | error_report("Merge bitmap source file only supported with " | |
4744 | "--merge"); | |
4745 | goto out; | |
4746 | } | |
4747 | ||
4748 | if (optind != argc - 2) { | |
4749 | error_report("Expecting filename and bitmap name"); | |
4750 | goto out; | |
4751 | } | |
4752 | ||
4753 | filename = argv[optind]; | |
4754 | bitmap = argv[optind + 1]; | |
4755 | ||
4756 | blk = img_open(image_opts, filename, fmt, BDRV_O_RDWR, false, false, | |
4757 | false); | |
4758 | if (!blk) { | |
4759 | goto out; | |
4760 | } | |
4761 | bs = blk_bs(blk); | |
4762 | if (src_filename) { | |
4763 | src = img_open(false, src_filename, src_fmt, 0, false, false, false); | |
4764 | if (!src) { | |
4765 | goto out; | |
4766 | } | |
4767 | src_bs = blk_bs(src); | |
4768 | } else { | |
4769 | src_bs = bs; | |
4770 | } | |
4771 | ||
4772 | QSIMPLEQ_FOREACH_SAFE(act, &actions, next, act_next) { | |
4773 | switch (act->act) { | |
4774 | case BITMAP_ADD: | |
4775 | qmp_block_dirty_bitmap_add(bs->node_name, bitmap, | |
4776 | !!granularity, granularity, true, true, | |
4777 | false, false, &err); | |
4778 | op = "add"; | |
4779 | break; | |
4780 | case BITMAP_REMOVE: | |
4781 | qmp_block_dirty_bitmap_remove(bs->node_name, bitmap, &err); | |
4782 | op = "remove"; | |
4783 | break; | |
4784 | case BITMAP_CLEAR: | |
4785 | qmp_block_dirty_bitmap_clear(bs->node_name, bitmap, &err); | |
4786 | op = "clear"; | |
4787 | break; | |
4788 | case BITMAP_ENABLE: | |
4789 | qmp_block_dirty_bitmap_enable(bs->node_name, bitmap, &err); | |
4790 | op = "enable"; | |
4791 | break; | |
4792 | case BITMAP_DISABLE: | |
4793 | qmp_block_dirty_bitmap_disable(bs->node_name, bitmap, &err); | |
4794 | op = "disable"; | |
4795 | break; | |
6c729dd8 EB |
4796 | case BITMAP_MERGE: |
4797 | do_dirty_bitmap_merge(bs->node_name, bitmap, src_bs->node_name, | |
4798 | act->src, &err); | |
3b51ab4b EB |
4799 | op = "merge"; |
4800 | break; | |
3b51ab4b EB |
4801 | default: |
4802 | g_assert_not_reached(); | |
4803 | } | |
4804 | ||
4805 | if (err) { | |
4806 | error_reportf_err(err, "Operation %s on bitmap %s failed: ", | |
4807 | op, bitmap); | |
4808 | goto out; | |
4809 | } | |
4810 | g_free(act); | |
4811 | } | |
4812 | ||
4813 | ret = 0; | |
4814 | ||
4815 | out: | |
4816 | blk_unref(src); | |
4817 | blk_unref(blk); | |
4818 | qemu_opts_del(opts); | |
4819 | return ret; | |
4820 | } | |
4821 | ||
86ce1f6e RS |
4822 | #define C_BS 01 |
4823 | #define C_COUNT 02 | |
4824 | #define C_IF 04 | |
4825 | #define C_OF 010 | |
f7c15533 | 4826 | #define C_SKIP 020 |
86ce1f6e RS |
4827 | |
4828 | struct DdInfo { | |
4829 | unsigned int flags; | |
4830 | int64_t count; | |
4831 | }; | |
4832 | ||
4833 | struct DdIo { | |
4834 | int bsz; /* Block size */ | |
4835 | char *filename; | |
4836 | uint8_t *buf; | |
f7c15533 | 4837 | int64_t offset; |
86ce1f6e RS |
4838 | }; |
4839 | ||
4840 | struct DdOpts { | |
4841 | const char *name; | |
4842 | int (*f)(const char *, struct DdIo *, struct DdIo *, struct DdInfo *); | |
4843 | unsigned int flag; | |
4844 | }; | |
4845 | ||
4846 | static int img_dd_bs(const char *arg, | |
4847 | struct DdIo *in, struct DdIo *out, | |
4848 | struct DdInfo *dd) | |
4849 | { | |
86ce1f6e RS |
4850 | int64_t res; |
4851 | ||
43d589b0 | 4852 | res = cvtnum_full("bs", arg, 1, INT_MAX); |
86ce1f6e | 4853 | |
43d589b0 | 4854 | if (res < 0) { |
86ce1f6e RS |
4855 | return 1; |
4856 | } | |
4857 | in->bsz = out->bsz = res; | |
4858 | ||
4859 | return 0; | |
4860 | } | |
4861 | ||
4862 | static int img_dd_count(const char *arg, | |
4863 | struct DdIo *in, struct DdIo *out, | |
4864 | struct DdInfo *dd) | |
4865 | { | |
43d589b0 | 4866 | dd->count = cvtnum("count", arg); |
86ce1f6e | 4867 | |
606caa0a | 4868 | if (dd->count < 0) { |
86ce1f6e RS |
4869 | return 1; |
4870 | } | |
4871 | ||
4872 | return 0; | |
4873 | } | |
4874 | ||
4875 | static int img_dd_if(const char *arg, | |
4876 | struct DdIo *in, struct DdIo *out, | |
4877 | struct DdInfo *dd) | |
4878 | { | |
4879 | in->filename = g_strdup(arg); | |
4880 | ||
4881 | return 0; | |
4882 | } | |
4883 | ||
4884 | static int img_dd_of(const char *arg, | |
4885 | struct DdIo *in, struct DdIo *out, | |
4886 | struct DdInfo *dd) | |
4887 | { | |
4888 | out->filename = g_strdup(arg); | |
4889 | ||
4890 | return 0; | |
4891 | } | |
4892 | ||
f7c15533 RS |
4893 | static int img_dd_skip(const char *arg, |
4894 | struct DdIo *in, struct DdIo *out, | |
4895 | struct DdInfo *dd) | |
4896 | { | |
43d589b0 | 4897 | in->offset = cvtnum("skip", arg); |
f7c15533 | 4898 | |
606caa0a | 4899 | if (in->offset < 0) { |
f7c15533 RS |
4900 | return 1; |
4901 | } | |
4902 | ||
4903 | return 0; | |
4904 | } | |
4905 | ||
86ce1f6e RS |
4906 | static int img_dd(int argc, char **argv) |
4907 | { | |
4908 | int ret = 0; | |
4909 | char *arg = NULL; | |
4910 | char *tmp; | |
4911 | BlockDriver *drv = NULL, *proto_drv = NULL; | |
4912 | BlockBackend *blk1 = NULL, *blk2 = NULL; | |
4913 | QemuOpts *opts = NULL; | |
4914 | QemuOptsList *create_opts = NULL; | |
4915 | Error *local_err = NULL; | |
4916 | bool image_opts = false; | |
4917 | int c, i; | |
4918 | const char *out_fmt = "raw"; | |
4919 | const char *fmt = NULL; | |
4920 | int64_t size = 0; | |
4921 | int64_t block_count = 0, out_pos, in_pos; | |
335e9937 | 4922 | bool force_share = false; |
86ce1f6e RS |
4923 | struct DdInfo dd = { |
4924 | .flags = 0, | |
4925 | .count = 0, | |
4926 | }; | |
4927 | struct DdIo in = { | |
4928 | .bsz = 512, /* Block size is by default 512 bytes */ | |
4929 | .filename = NULL, | |
f7c15533 RS |
4930 | .buf = NULL, |
4931 | .offset = 0 | |
86ce1f6e RS |
4932 | }; |
4933 | struct DdIo out = { | |
4934 | .bsz = 512, | |
4935 | .filename = NULL, | |
f7c15533 RS |
4936 | .buf = NULL, |
4937 | .offset = 0 | |
86ce1f6e RS |
4938 | }; |
4939 | ||
4940 | const struct DdOpts options[] = { | |
4941 | { "bs", img_dd_bs, C_BS }, | |
4942 | { "count", img_dd_count, C_COUNT }, | |
4943 | { "if", img_dd_if, C_IF }, | |
4944 | { "of", img_dd_of, C_OF }, | |
f7c15533 | 4945 | { "skip", img_dd_skip, C_SKIP }, |
86ce1f6e RS |
4946 | { NULL, NULL, 0 } |
4947 | }; | |
4948 | const struct option long_options[] = { | |
4949 | { "help", no_argument, 0, 'h'}, | |
83d4bf94 | 4950 | { "object", required_argument, 0, OPTION_OBJECT}, |
86ce1f6e | 4951 | { "image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
335e9937 | 4952 | { "force-share", no_argument, 0, 'U'}, |
86ce1f6e RS |
4953 | { 0, 0, 0, 0 } |
4954 | }; | |
4955 | ||
335e9937 | 4956 | while ((c = getopt_long(argc, argv, ":hf:O:U", long_options, NULL))) { |
86ce1f6e RS |
4957 | if (c == EOF) { |
4958 | break; | |
4959 | } | |
4960 | switch (c) { | |
4961 | case 'O': | |
4962 | out_fmt = optarg; | |
4963 | break; | |
4964 | case 'f': | |
4965 | fmt = optarg; | |
4966 | break; | |
c9192973 SH |
4967 | case ':': |
4968 | missing_argument(argv[optind - 1]); | |
4969 | break; | |
86ce1f6e | 4970 | case '?': |
c9192973 SH |
4971 | unrecognized_option(argv[optind - 1]); |
4972 | break; | |
86ce1f6e RS |
4973 | case 'h': |
4974 | help(); | |
4975 | break; | |
335e9937 FZ |
4976 | case 'U': |
4977 | force_share = true; | |
4978 | break; | |
2a245709 SH |
4979 | case OPTION_OBJECT: |
4980 | if (!qemu_opts_parse_noisily(&qemu_object_opts, optarg, true)) { | |
83d4bf94 DB |
4981 | ret = -1; |
4982 | goto out; | |
4983 | } | |
2a245709 | 4984 | break; |
86ce1f6e RS |
4985 | case OPTION_IMAGE_OPTS: |
4986 | image_opts = true; | |
4987 | break; | |
4988 | } | |
4989 | } | |
4990 | ||
4991 | for (i = optind; i < argc; i++) { | |
4992 | int j; | |
4993 | arg = g_strdup(argv[i]); | |
4994 | ||
4995 | tmp = strchr(arg, '='); | |
4996 | if (tmp == NULL) { | |
4997 | error_report("unrecognized operand %s", arg); | |
4998 | ret = -1; | |
4999 | goto out; | |
5000 | } | |
5001 | ||
5002 | *tmp++ = '\0'; | |
5003 | ||
5004 | for (j = 0; options[j].name != NULL; j++) { | |
5005 | if (!strcmp(arg, options[j].name)) { | |
5006 | break; | |
5007 | } | |
5008 | } | |
5009 | if (options[j].name == NULL) { | |
5010 | error_report("unrecognized operand %s", arg); | |
5011 | ret = -1; | |
5012 | goto out; | |
5013 | } | |
5014 | ||
5015 | if (options[j].f(tmp, &in, &out, &dd) != 0) { | |
5016 | ret = -1; | |
5017 | goto out; | |
5018 | } | |
5019 | dd.flags |= options[j].flag; | |
5020 | g_free(arg); | |
5021 | arg = NULL; | |
5022 | } | |
5023 | ||
5024 | if (!(dd.flags & C_IF && dd.flags & C_OF)) { | |
5025 | error_report("Must specify both input and output files"); | |
5026 | ret = -1; | |
5027 | goto out; | |
5028 | } | |
83d4bf94 DB |
5029 | |
5030 | if (qemu_opts_foreach(&qemu_object_opts, | |
5031 | user_creatable_add_opts_foreach, | |
c6e5cdfd | 5032 | qemu_img_object_print_help, &error_fatal)) { |
83d4bf94 DB |
5033 | ret = -1; |
5034 | goto out; | |
5035 | } | |
5036 | ||
335e9937 FZ |
5037 | blk1 = img_open(image_opts, in.filename, fmt, 0, false, false, |
5038 | force_share); | |
86ce1f6e RS |
5039 | |
5040 | if (!blk1) { | |
5041 | ret = -1; | |
5042 | goto out; | |
5043 | } | |
5044 | ||
5045 | drv = bdrv_find_format(out_fmt); | |
5046 | if (!drv) { | |
5047 | error_report("Unknown file format"); | |
5048 | ret = -1; | |
5049 | goto out; | |
5050 | } | |
5051 | proto_drv = bdrv_find_protocol(out.filename, true, &local_err); | |
5052 | ||
5053 | if (!proto_drv) { | |
5054 | error_report_err(local_err); | |
5055 | ret = -1; | |
5056 | goto out; | |
5057 | } | |
5058 | if (!drv->create_opts) { | |
5059 | error_report("Format driver '%s' does not support image creation", | |
5060 | drv->format_name); | |
5061 | ret = -1; | |
5062 | goto out; | |
5063 | } | |
5064 | if (!proto_drv->create_opts) { | |
5065 | error_report("Protocol driver '%s' does not support image creation", | |
5066 | proto_drv->format_name); | |
5067 | ret = -1; | |
5068 | goto out; | |
5069 | } | |
5070 | create_opts = qemu_opts_append(create_opts, drv->create_opts); | |
5071 | create_opts = qemu_opts_append(create_opts, proto_drv->create_opts); | |
5072 | ||
5073 | opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); | |
5074 | ||
5075 | size = blk_getlength(blk1); | |
5076 | if (size < 0) { | |
5077 | error_report("Failed to get size for '%s'", in.filename); | |
5078 | ret = -1; | |
5079 | goto out; | |
5080 | } | |
5081 | ||
5082 | if (dd.flags & C_COUNT && dd.count <= INT64_MAX / in.bsz && | |
5083 | dd.count * in.bsz < size) { | |
5084 | size = dd.count * in.bsz; | |
5085 | } | |
5086 | ||
f7c15533 RS |
5087 | /* Overflow means the specified offset is beyond input image's size */ |
5088 | if (dd.flags & C_SKIP && (in.offset > INT64_MAX / in.bsz || | |
5089 | size < in.bsz * in.offset)) { | |
5090 | qemu_opt_set_number(opts, BLOCK_OPT_SIZE, 0, &error_abort); | |
5091 | } else { | |
5092 | qemu_opt_set_number(opts, BLOCK_OPT_SIZE, | |
5093 | size - in.bsz * in.offset, &error_abort); | |
5094 | } | |
86ce1f6e RS |
5095 | |
5096 | ret = bdrv_create(drv, out.filename, opts, &local_err); | |
5097 | if (ret < 0) { | |
5098 | error_reportf_err(local_err, | |
5099 | "%s: error while creating output image: ", | |
5100 | out.filename); | |
5101 | ret = -1; | |
5102 | goto out; | |
5103 | } | |
5104 | ||
ea204dda DB |
5105 | /* TODO, we can't honour --image-opts for the target, |
5106 | * since it needs to be given in a format compatible | |
5107 | * with the bdrv_create() call above which does not | |
5108 | * support image-opts style. | |
5109 | */ | |
29cf9336 | 5110 | blk2 = img_open_file(out.filename, NULL, out_fmt, BDRV_O_RDWR, |
ea204dda | 5111 | false, false, false); |
86ce1f6e RS |
5112 | |
5113 | if (!blk2) { | |
5114 | ret = -1; | |
5115 | goto out; | |
5116 | } | |
5117 | ||
f7c15533 RS |
5118 | if (dd.flags & C_SKIP && (in.offset > INT64_MAX / in.bsz || |
5119 | size < in.offset * in.bsz)) { | |
5120 | /* We give a warning if the skip option is bigger than the input | |
5121 | * size and create an empty output disk image (i.e. like dd(1)). | |
5122 | */ | |
5123 | error_report("%s: cannot skip to specified offset", in.filename); | |
5124 | in_pos = size; | |
5125 | } else { | |
5126 | in_pos = in.offset * in.bsz; | |
5127 | } | |
5128 | ||
86ce1f6e RS |
5129 | in.buf = g_new(uint8_t, in.bsz); |
5130 | ||
f7c15533 | 5131 | for (out_pos = 0; in_pos < size; block_count++) { |
86ce1f6e RS |
5132 | int in_ret, out_ret; |
5133 | ||
5134 | if (in_pos + in.bsz > size) { | |
5135 | in_ret = blk_pread(blk1, in_pos, in.buf, size - in_pos); | |
5136 | } else { | |
5137 | in_ret = blk_pread(blk1, in_pos, in.buf, in.bsz); | |
5138 | } | |
5139 | if (in_ret < 0) { | |
5140 | error_report("error while reading from input image file: %s", | |
5141 | strerror(-in_ret)); | |
5142 | ret = -1; | |
5143 | goto out; | |
5144 | } | |
5145 | in_pos += in_ret; | |
5146 | ||
5147 | out_ret = blk_pwrite(blk2, out_pos, in.buf, in_ret, 0); | |
5148 | ||
5149 | if (out_ret < 0) { | |
5150 | error_report("error while writing to output image file: %s", | |
5151 | strerror(-out_ret)); | |
5152 | ret = -1; | |
5153 | goto out; | |
5154 | } | |
5155 | out_pos += out_ret; | |
5156 | } | |
5157 | ||
5158 | out: | |
5159 | g_free(arg); | |
5160 | qemu_opts_del(opts); | |
5161 | qemu_opts_free(create_opts); | |
5162 | blk_unref(blk1); | |
5163 | blk_unref(blk2); | |
5164 | g_free(in.filename); | |
5165 | g_free(out.filename); | |
5166 | g_free(in.buf); | |
5167 | g_free(out.buf); | |
5168 | ||
5169 | if (ret) { | |
b6133b8c KW |
5170 | return 1; |
5171 | } | |
5172 | return 0; | |
5173 | } | |
5174 | ||
fd03c2b8 SH |
5175 | static void dump_json_block_measure_info(BlockMeasureInfo *info) |
5176 | { | |
5177 | QString *str; | |
5178 | QObject *obj; | |
5179 | Visitor *v = qobject_output_visitor_new(&obj); | |
5180 | ||
5181 | visit_type_BlockMeasureInfo(v, NULL, &info, &error_abort); | |
5182 | visit_complete(v, &obj); | |
5183 | str = qobject_to_json_pretty(obj); | |
5184 | assert(str != NULL); | |
5185 | printf("%s\n", qstring_get_str(str)); | |
cb3e7f08 | 5186 | qobject_unref(obj); |
fd03c2b8 | 5187 | visit_free(v); |
cb3e7f08 | 5188 | qobject_unref(str); |
fd03c2b8 SH |
5189 | } |
5190 | ||
5191 | static int img_measure(int argc, char **argv) | |
5192 | { | |
5193 | static const struct option long_options[] = { | |
5194 | {"help", no_argument, 0, 'h'}, | |
5195 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, | |
5196 | {"object", required_argument, 0, OPTION_OBJECT}, | |
5197 | {"output", required_argument, 0, OPTION_OUTPUT}, | |
5198 | {"size", required_argument, 0, OPTION_SIZE}, | |
5199 | {"force-share", no_argument, 0, 'U'}, | |
5200 | {0, 0, 0, 0} | |
5201 | }; | |
5202 | OutputFormat output_format = OFORMAT_HUMAN; | |
5203 | BlockBackend *in_blk = NULL; | |
5204 | BlockDriver *drv; | |
5205 | const char *filename = NULL; | |
5206 | const char *fmt = NULL; | |
5207 | const char *out_fmt = "raw"; | |
5208 | char *options = NULL; | |
5209 | char *snapshot_name = NULL; | |
5210 | bool force_share = false; | |
5211 | QemuOpts *opts = NULL; | |
5212 | QemuOpts *object_opts = NULL; | |
5213 | QemuOpts *sn_opts = NULL; | |
5214 | QemuOptsList *create_opts = NULL; | |
5215 | bool image_opts = false; | |
5216 | uint64_t img_size = UINT64_MAX; | |
5217 | BlockMeasureInfo *info = NULL; | |
5218 | Error *local_err = NULL; | |
5219 | int ret = 1; | |
5220 | int c; | |
5221 | ||
5222 | while ((c = getopt_long(argc, argv, "hf:O:o:l:U", | |
5223 | long_options, NULL)) != -1) { | |
5224 | switch (c) { | |
5225 | case '?': | |
5226 | case 'h': | |
5227 | help(); | |
5228 | break; | |
5229 | case 'f': | |
5230 | fmt = optarg; | |
5231 | break; | |
5232 | case 'O': | |
5233 | out_fmt = optarg; | |
5234 | break; | |
5235 | case 'o': | |
6d2b5cba | 5236 | if (accumulate_options(&options, optarg) < 0) { |
fd03c2b8 SH |
5237 | goto out; |
5238 | } | |
fd03c2b8 SH |
5239 | break; |
5240 | case 'l': | |
5241 | if (strstart(optarg, SNAPSHOT_OPT_BASE, NULL)) { | |
5242 | sn_opts = qemu_opts_parse_noisily(&internal_snapshot_opts, | |
5243 | optarg, false); | |
5244 | if (!sn_opts) { | |
5245 | error_report("Failed in parsing snapshot param '%s'", | |
5246 | optarg); | |
5247 | goto out; | |
5248 | } | |
5249 | } else { | |
5250 | snapshot_name = optarg; | |
5251 | } | |
5252 | break; | |
5253 | case 'U': | |
5254 | force_share = true; | |
5255 | break; | |
5256 | case OPTION_OBJECT: | |
5257 | object_opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
5258 | optarg, true); | |
5259 | if (!object_opts) { | |
5260 | goto out; | |
5261 | } | |
5262 | break; | |
5263 | case OPTION_IMAGE_OPTS: | |
5264 | image_opts = true; | |
5265 | break; | |
5266 | case OPTION_OUTPUT: | |
5267 | if (!strcmp(optarg, "json")) { | |
5268 | output_format = OFORMAT_JSON; | |
5269 | } else if (!strcmp(optarg, "human")) { | |
5270 | output_format = OFORMAT_HUMAN; | |
5271 | } else { | |
5272 | error_report("--output must be used with human or json " | |
5273 | "as argument."); | |
5274 | goto out; | |
5275 | } | |
5276 | break; | |
5277 | case OPTION_SIZE: | |
5278 | { | |
5279 | int64_t sval; | |
5280 | ||
43d589b0 | 5281 | sval = cvtnum("image size", optarg); |
fd03c2b8 | 5282 | if (sval < 0) { |
fd03c2b8 SH |
5283 | goto out; |
5284 | } | |
5285 | img_size = (uint64_t)sval; | |
5286 | } | |
5287 | break; | |
5288 | } | |
5289 | } | |
5290 | ||
5291 | if (qemu_opts_foreach(&qemu_object_opts, | |
5292 | user_creatable_add_opts_foreach, | |
c6e5cdfd | 5293 | qemu_img_object_print_help, &error_fatal)) { |
fd03c2b8 SH |
5294 | goto out; |
5295 | } | |
5296 | ||
5297 | if (argc - optind > 1) { | |
5298 | error_report("At most one filename argument is allowed."); | |
5299 | goto out; | |
5300 | } else if (argc - optind == 1) { | |
5301 | filename = argv[optind]; | |
5302 | } | |
5303 | ||
c3673dcf SH |
5304 | if (!filename && (image_opts || fmt || snapshot_name || sn_opts)) { |
5305 | error_report("--image-opts, -f, and -l require a filename argument."); | |
fd03c2b8 SH |
5306 | goto out; |
5307 | } | |
5308 | if (filename && img_size != UINT64_MAX) { | |
5309 | error_report("--size N cannot be used together with a filename."); | |
5310 | goto out; | |
5311 | } | |
5312 | if (!filename && img_size == UINT64_MAX) { | |
5313 | error_report("Either --size N or one filename must be specified."); | |
5314 | goto out; | |
5315 | } | |
5316 | ||
5317 | if (filename) { | |
5318 | in_blk = img_open(image_opts, filename, fmt, 0, | |
5319 | false, false, force_share); | |
5320 | if (!in_blk) { | |
5321 | goto out; | |
5322 | } | |
5323 | ||
5324 | if (sn_opts) { | |
5325 | bdrv_snapshot_load_tmp(blk_bs(in_blk), | |
5326 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_ID), | |
5327 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_NAME), | |
5328 | &local_err); | |
5329 | } else if (snapshot_name != NULL) { | |
5330 | bdrv_snapshot_load_tmp_by_id_or_name(blk_bs(in_blk), | |
5331 | snapshot_name, &local_err); | |
5332 | } | |
5333 | if (local_err) { | |
5334 | error_reportf_err(local_err, "Failed to load snapshot: "); | |
5335 | goto out; | |
5336 | } | |
5337 | } | |
5338 | ||
5339 | drv = bdrv_find_format(out_fmt); | |
5340 | if (!drv) { | |
5341 | error_report("Unknown file format '%s'", out_fmt); | |
5342 | goto out; | |
5343 | } | |
5344 | if (!drv->create_opts) { | |
5345 | error_report("Format driver '%s' does not support image creation", | |
5346 | drv->format_name); | |
5347 | goto out; | |
5348 | } | |
5349 | ||
5350 | create_opts = qemu_opts_append(create_opts, drv->create_opts); | |
5351 | create_opts = qemu_opts_append(create_opts, bdrv_file.create_opts); | |
5352 | opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); | |
5353 | if (options) { | |
5354 | qemu_opts_do_parse(opts, options, NULL, &local_err); | |
5355 | if (local_err) { | |
5356 | error_report_err(local_err); | |
5357 | error_report("Invalid options for file format '%s'", out_fmt); | |
5358 | goto out; | |
5359 | } | |
5360 | } | |
5361 | if (img_size != UINT64_MAX) { | |
5362 | qemu_opt_set_number(opts, BLOCK_OPT_SIZE, img_size, &error_abort); | |
5363 | } | |
5364 | ||
5365 | info = bdrv_measure(drv, opts, in_blk ? blk_bs(in_blk) : NULL, &local_err); | |
5366 | if (local_err) { | |
5367 | error_report_err(local_err); | |
5368 | goto out; | |
5369 | } | |
5370 | ||
5371 | if (output_format == OFORMAT_HUMAN) { | |
5372 | printf("required size: %" PRIu64 "\n", info->required); | |
5373 | printf("fully allocated size: %" PRIu64 "\n", info->fully_allocated); | |
5d72c68b EB |
5374 | if (info->has_bitmaps) { |
5375 | printf("bitmaps size: %" PRIu64 "\n", info->bitmaps); | |
5376 | } | |
fd03c2b8 SH |
5377 | } else { |
5378 | dump_json_block_measure_info(info); | |
5379 | } | |
5380 | ||
5381 | ret = 0; | |
5382 | ||
5383 | out: | |
5384 | qapi_free_BlockMeasureInfo(info); | |
5385 | qemu_opts_del(object_opts); | |
5386 | qemu_opts_del(opts); | |
5387 | qemu_opts_del(sn_opts); | |
5388 | qemu_opts_free(create_opts); | |
5389 | g_free(options); | |
5390 | blk_unref(in_blk); | |
5391 | return ret; | |
5392 | } | |
b6133b8c | 5393 | |
c227f099 | 5394 | static const img_cmd_t img_cmds[] = { |
153859be SB |
5395 | #define DEF(option, callback, arg_string) \ |
5396 | { option, callback }, | |
5397 | #include "qemu-img-cmds.h" | |
5398 | #undef DEF | |
153859be SB |
5399 | { NULL, NULL, }, |
5400 | }; | |
5401 | ||
ea2384d3 FB |
5402 | int main(int argc, char **argv) |
5403 | { | |
c227f099 | 5404 | const img_cmd_t *cmd; |
153859be | 5405 | const char *cmdname; |
2f78e491 | 5406 | Error *local_error = NULL; |
06a1e0c1 | 5407 | char *trace_file = NULL; |
7db1689c | 5408 | int c; |
7db1689c JC |
5409 | static const struct option long_options[] = { |
5410 | {"help", no_argument, 0, 'h'}, | |
10985131 | 5411 | {"version", no_argument, 0, 'V'}, |
06a1e0c1 | 5412 | {"trace", required_argument, NULL, 'T'}, |
7db1689c JC |
5413 | {0, 0, 0, 0} |
5414 | }; | |
ea2384d3 | 5415 | |
526eda14 MK |
5416 | #ifdef CONFIG_POSIX |
5417 | signal(SIGPIPE, SIG_IGN); | |
5418 | #endif | |
5419 | ||
f5852efa | 5420 | error_init(argv[0]); |
fe4db84d | 5421 | module_call_init(MODULE_INIT_TRACE); |
10f5bff6 | 5422 | qemu_init_exec_dir(argv[0]); |
53f76e58 | 5423 | |
2f78e491 | 5424 | if (qemu_init_main_loop(&local_error)) { |
565f65d2 | 5425 | error_report_err(local_error); |
2f78e491 CN |
5426 | exit(EXIT_FAILURE); |
5427 | } | |
5428 | ||
e8f2d272 | 5429 | qcrypto_init(&error_fatal); |
c2297088 | 5430 | |
064097d9 | 5431 | module_call_init(MODULE_INIT_QOM); |
ea2384d3 | 5432 | bdrv_init(); |
ac1307ab FZ |
5433 | if (argc < 2) { |
5434 | error_exit("Not enough arguments"); | |
5435 | } | |
153859be | 5436 | |
3babeb15 | 5437 | qemu_add_opts(&qemu_object_opts); |
eb769f74 | 5438 | qemu_add_opts(&qemu_source_opts); |
06a1e0c1 | 5439 | qemu_add_opts(&qemu_trace_opts); |
3babeb15 | 5440 | |
c9192973 | 5441 | while ((c = getopt_long(argc, argv, "+:hVT:", long_options, NULL)) != -1) { |
10985131 | 5442 | switch (c) { |
c9192973 SH |
5443 | case ':': |
5444 | missing_argument(argv[optind - 1]); | |
5445 | return 0; | |
4581c16f | 5446 | case '?': |
c9192973 SH |
5447 | unrecognized_option(argv[optind - 1]); |
5448 | return 0; | |
5449 | case 'h': | |
10985131 DL |
5450 | help(); |
5451 | return 0; | |
5452 | case 'V': | |
5453 | printf(QEMU_IMG_VERSION); | |
5454 | return 0; | |
06a1e0c1 DL |
5455 | case 'T': |
5456 | g_free(trace_file); | |
5457 | trace_file = trace_opt_parse(optarg); | |
5458 | break; | |
153859be | 5459 | } |
ea2384d3 | 5460 | } |
153859be | 5461 | |
10985131 | 5462 | cmdname = argv[optind]; |
7db1689c | 5463 | |
10985131 DL |
5464 | /* reset getopt_long scanning */ |
5465 | argc -= optind; | |
5466 | if (argc < 1) { | |
5f6979cb JC |
5467 | return 0; |
5468 | } | |
10985131 | 5469 | argv += optind; |
d339d766 | 5470 | qemu_reset_optind(); |
10985131 | 5471 | |
06a1e0c1 DL |
5472 | if (!trace_init_backends()) { |
5473 | exit(1); | |
5474 | } | |
5475 | trace_init_file(trace_file); | |
5476 | qemu_set_log(LOG_TRACE); | |
5477 | ||
10985131 DL |
5478 | /* find the command */ |
5479 | for (cmd = img_cmds; cmd->name != NULL; cmd++) { | |
5480 | if (!strcmp(cmdname, cmd->name)) { | |
5481 | return cmd->handler(argc, argv); | |
5482 | } | |
5483 | } | |
7db1689c | 5484 | |
153859be | 5485 | /* not found */ |
ac1307ab | 5486 | error_exit("Command not found: %s", cmdname); |
ea2384d3 | 5487 | } |