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Commit | Line | Data |
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ea2384d3 | 1 | /* |
fb43f4dd | 2 | * QEMU disk image utility |
5fafdf24 | 3 | * |
68d0f70e | 4 | * Copyright (c) 2003-2008 Fabrice Bellard |
5fafdf24 | 5 | * |
ea2384d3 FB |
6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
7 | * of this software and associated documentation files (the "Software"), to deal | |
8 | * in the Software without restriction, including without limitation the rights | |
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
10 | * copies of the Software, and to permit persons to whom the Software is | |
11 | * furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
22 | * THE SOFTWARE. | |
23 | */ | |
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" |
9af23989 | 31 | #include "qapi/qapi-visit-block-core.h" |
b3db211f | 32 | #include "qapi/qobject-output-visitor.h" |
7b1b5d19 | 33 | #include "qapi/qmp/qjson.h" |
452fcdbc | 34 | #include "qapi/qmp/qdict.h" |
fc81fa1e | 35 | #include "qapi/qmp/qstring.h" |
f348b6d1 | 36 | #include "qemu/cutils.h" |
3babeb15 | 37 | #include "qemu/config-file.h" |
1de7afc9 PB |
38 | #include "qemu/option.h" |
39 | #include "qemu/error-report.h" | |
06a1e0c1 | 40 | #include "qemu/log.h" |
db725815 | 41 | #include "qemu/main-loop.h" |
0b8fa32f | 42 | #include "qemu/module.h" |
97ede57a | 43 | #include "qemu/units.h" |
3babeb15 | 44 | #include "qom/object_interfaces.h" |
26f54e9a | 45 | #include "sysemu/block-backend.h" |
737e150e | 46 | #include "block/block_int.h" |
d4a3238a | 47 | #include "block/blockjob.h" |
f364ec65 | 48 | #include "block/qapi.h" |
c2297088 | 49 | #include "crypto/init.h" |
06a1e0c1 | 50 | #include "trace/control.h" |
e8445331 | 51 | |
7e563bfb | 52 | #define QEMU_IMG_VERSION "qemu-img version " QEMU_FULL_VERSION \ |
0781dd6e | 53 | "\n" QEMU_COPYRIGHT "\n" |
5f6979cb | 54 | |
c227f099 | 55 | typedef struct img_cmd_t { |
153859be SB |
56 | const char *name; |
57 | int (*handler)(int argc, char **argv); | |
c227f099 | 58 | } img_cmd_t; |
153859be | 59 | |
8599ea4c FS |
60 | enum { |
61 | OPTION_OUTPUT = 256, | |
62 | OPTION_BACKING_CHAIN = 257, | |
3babeb15 | 63 | OPTION_OBJECT = 258, |
eb769f74 | 64 | OPTION_IMAGE_OPTS = 259, |
b6495fa8 | 65 | OPTION_PATTERN = 260, |
55d539c8 KW |
66 | OPTION_FLUSH_INTERVAL = 261, |
67 | OPTION_NO_DRAIN = 262, | |
305b4c60 | 68 | OPTION_TARGET_IMAGE_OPTS = 263, |
fd03c2b8 | 69 | OPTION_SIZE = 264, |
dc5f690b | 70 | OPTION_PREALLOCATION = 265, |
4ffca890 | 71 | OPTION_SHRINK = 266, |
8eaac025 | 72 | OPTION_SALVAGE = 267, |
168468fe | 73 | OPTION_TARGET_IS_ZERO = 268, |
8599ea4c FS |
74 | }; |
75 | ||
76 | typedef enum OutputFormat { | |
77 | OFORMAT_JSON, | |
78 | OFORMAT_HUMAN, | |
79 | } OutputFormat; | |
80 | ||
e6996143 | 81 | /* Default to cache=writeback as data integrity is not important for qemu-img */ |
661a0f71 | 82 | #define BDRV_DEFAULT_CACHE "writeback" |
137519ce | 83 | |
00c6d403 | 84 | static void format_print(void *opaque, const char *name) |
ea2384d3 | 85 | { |
00c6d403 | 86 | printf(" %s", name); |
ea2384d3 FB |
87 | } |
88 | ||
ac1307ab FZ |
89 | static void QEMU_NORETURN GCC_FMT_ATTR(1, 2) error_exit(const char *fmt, ...) |
90 | { | |
91 | va_list ap; | |
92 | ||
ac1307ab | 93 | va_start(ap, fmt); |
e9e1d92d | 94 | error_vreport(fmt, ap); |
ac1307ab FZ |
95 | va_end(ap); |
96 | ||
e9e1d92d | 97 | error_printf("Try 'qemu-img --help' for more information\n"); |
ac1307ab FZ |
98 | exit(EXIT_FAILURE); |
99 | } | |
100 | ||
c9192973 SH |
101 | static void QEMU_NORETURN missing_argument(const char *option) |
102 | { | |
103 | error_exit("missing argument for option '%s'", option); | |
104 | } | |
105 | ||
106 | static void QEMU_NORETURN unrecognized_option(const char *option) | |
107 | { | |
108 | error_exit("unrecognized option '%s'", option); | |
109 | } | |
110 | ||
d2c639d6 | 111 | /* Please keep in synch with qemu-img.texi */ |
ac1307ab | 112 | static void QEMU_NORETURN help(void) |
ea2384d3 | 113 | { |
e00291c0 | 114 | const char *help_msg = |
5f6979cb | 115 | QEMU_IMG_VERSION |
10985131 | 116 | "usage: qemu-img [standard options] command [command options]\n" |
3f020d70 | 117 | "QEMU disk image utility\n" |
118 | "\n" | |
10985131 DL |
119 | " '-h', '--help' display this help and exit\n" |
120 | " '-V', '--version' output version information and exit\n" | |
06a1e0c1 DL |
121 | " '-T', '--trace' [[enable=]<pattern>][,events=<file>][,file=<file>]\n" |
122 | " specify tracing options\n" | |
10985131 | 123 | "\n" |
3f020d70 | 124 | "Command syntax:\n" |
153859be SB |
125 | #define DEF(option, callback, arg_string) \ |
126 | " " arg_string "\n" | |
127 | #include "qemu-img-cmds.h" | |
128 | #undef DEF | |
3f020d70 | 129 | "\n" |
130 | "Command parameters:\n" | |
131 | " 'filename' is a disk image filename\n" | |
3babeb15 DB |
132 | " 'objectdef' is a QEMU user creatable object definition. See the qemu(1)\n" |
133 | " manual page for a description of the object properties. The most common\n" | |
134 | " object type is a 'secret', which is used to supply passwords and/or\n" | |
135 | " encryption keys.\n" | |
3f020d70 | 136 | " 'fmt' is the disk image format. It is guessed automatically in most cases\n" |
661a0f71 | 137 | " 'cache' is the cache mode used to write the output disk image, the valid\n" |
80ccf93b LY |
138 | " options are: 'none', 'writeback' (default, except for convert), 'writethrough',\n" |
139 | " 'directsync' and 'unsafe' (default for convert)\n" | |
bb87fdf8 SH |
140 | " 'src_cache' is the cache mode used to read input disk images, the valid\n" |
141 | " options are the same as for the 'cache' option\n" | |
3f020d70 | 142 | " 'size' is the disk image size in bytes. Optional suffixes\n" |
5e00984a KW |
143 | " 'k' or 'K' (kilobyte, 1024), 'M' (megabyte, 1024k), 'G' (gigabyte, 1024M),\n" |
144 | " 'T' (terabyte, 1024G), 'P' (petabyte, 1024T) and 'E' (exabyte, 1024P) are\n" | |
145 | " supported. 'b' is ignored.\n" | |
3f020d70 | 146 | " 'output_filename' is the destination disk image filename\n" |
147 | " 'output_fmt' is the destination format\n" | |
148 | " 'options' is a comma separated list of format specific options in a\n" | |
149 | " name=value format. Use -o ? for an overview of the options supported by the\n" | |
150 | " used format\n" | |
ef80654d WX |
151 | " 'snapshot_param' is param used for internal snapshot, format\n" |
152 | " is 'snapshot.id=[ID],snapshot.name=[NAME]', or\n" | |
153 | " '[ID_OR_NAME]'\n" | |
3f020d70 | 154 | " '-c' indicates that target image must be compressed (qcow format only)\n" |
6e6e55f5 JS |
155 | " '-u' allows unsafe backing chains. For rebasing, it is assumed that old and\n" |
156 | " new backing file match exactly. The image doesn't need a working\n" | |
157 | " backing file before rebasing in this case (useful for renaming the\n" | |
158 | " backing file). For image creation, allow creating without attempting\n" | |
159 | " to open the backing file.\n" | |
3f020d70 | 160 | " '-h' with or without a command shows this help and lists the supported formats\n" |
6b837bc4 | 161 | " '-p' show progress of command (only certain commands)\n" |
f382d43a | 162 | " '-q' use Quiet mode - do not print any output (except errors)\n" |
11b6699a PL |
163 | " '-S' indicates the consecutive number of bytes (defaults to 4k) that must\n" |
164 | " contain only zeros for qemu-img to create a sparse image during\n" | |
165 | " conversion. If the number of bytes is 0, the source will not be scanned for\n" | |
166 | " unallocated or zero sectors, and the destination image will always be\n" | |
167 | " fully allocated\n" | |
c054b3fd | 168 | " '--output' takes the format in which the output must be done (human or json)\n" |
b2e10493 AD |
169 | " '-n' skips the target volume creation (useful if the volume is created\n" |
170 | " prior to running qemu-img)\n" | |
3f020d70 | 171 | "\n" |
4534ff54 KW |
172 | "Parameters to check subcommand:\n" |
173 | " '-r' tries to repair any inconsistencies that are found during the check.\n" | |
174 | " '-r leaks' repairs only cluster leaks, whereas '-r all' fixes all\n" | |
175 | " kinds of errors, with a higher risk of choosing the wrong fix or\n" | |
0546b8c2 | 176 | " hiding corruption that has already occurred.\n" |
4534ff54 | 177 | "\n" |
2d9187bc PL |
178 | "Parameters to convert subcommand:\n" |
179 | " '-m' specifies how many coroutines work in parallel during the convert\n" | |
180 | " process (defaults to 8)\n" | |
181 | " '-W' allow to write to the target out of order rather than sequential\n" | |
182 | "\n" | |
3f020d70 | 183 | "Parameters to snapshot subcommand:\n" |
184 | " 'snapshot' is the name of the snapshot to create, apply or delete\n" | |
185 | " '-a' applies a snapshot (revert disk to saved state)\n" | |
186 | " '-c' creates a snapshot\n" | |
187 | " '-d' deletes a snapshot\n" | |
d14ed18c MR |
188 | " '-l' lists all snapshots in the given image\n" |
189 | "\n" | |
190 | "Parameters to compare subcommand:\n" | |
191 | " '-f' first image format\n" | |
192 | " '-F' second image format\n" | |
86ce1f6e RS |
193 | " '-s' run in Strict mode - fail on different image size or sector allocation\n" |
194 | "\n" | |
195 | "Parameters to dd subcommand:\n" | |
196 | " 'bs=BYTES' read and write up to BYTES bytes at a time " | |
197 | "(default: 512)\n" | |
198 | " 'count=N' copy only N input blocks\n" | |
199 | " 'if=FILE' read from FILE\n" | |
f7c15533 RS |
200 | " 'of=FILE' write to FILE\n" |
201 | " 'skip=N' skip N bs-sized blocks at the start of input\n"; | |
e00291c0 PB |
202 | |
203 | printf("%s\nSupported formats:", help_msg); | |
9ac404c5 | 204 | bdrv_iterate_format(format_print, NULL, false); |
f5048cb7 | 205 | printf("\n\n" QEMU_HELP_BOTTOM "\n"); |
ac1307ab | 206 | exit(EXIT_SUCCESS); |
ea2384d3 FB |
207 | } |
208 | ||
3babeb15 DB |
209 | static QemuOptsList qemu_object_opts = { |
210 | .name = "object", | |
211 | .implied_opt_name = "qom-type", | |
212 | .head = QTAILQ_HEAD_INITIALIZER(qemu_object_opts.head), | |
213 | .desc = { | |
214 | { } | |
215 | }, | |
216 | }; | |
217 | ||
c6e5cdfd KW |
218 | static bool qemu_img_object_print_help(const char *type, QemuOpts *opts) |
219 | { | |
220 | if (user_creatable_print_help(type, opts)) { | |
221 | exit(0); | |
222 | } | |
223 | return true; | |
224 | } | |
225 | ||
eb769f74 DB |
226 | static QemuOptsList qemu_source_opts = { |
227 | .name = "source", | |
228 | .implied_opt_name = "file", | |
229 | .head = QTAILQ_HEAD_INITIALIZER(qemu_source_opts.head), | |
230 | .desc = { | |
231 | { } | |
232 | }, | |
233 | }; | |
234 | ||
7c30f657 | 235 | static int GCC_FMT_ATTR(2, 3) qprintf(bool quiet, const char *fmt, ...) |
f382d43a MR |
236 | { |
237 | int ret = 0; | |
238 | if (!quiet) { | |
239 | va_list args; | |
240 | va_start(args, fmt); | |
241 | ret = vprintf(fmt, args); | |
242 | va_end(args); | |
243 | } | |
244 | return ret; | |
245 | } | |
246 | ||
ea2384d3 | 247 | |
4ac8aacd JS |
248 | static int print_block_option_help(const char *filename, const char *fmt) |
249 | { | |
250 | BlockDriver *drv, *proto_drv; | |
83d0521a | 251 | QemuOptsList *create_opts = NULL; |
b65a5e12 | 252 | Error *local_err = NULL; |
4ac8aacd JS |
253 | |
254 | /* Find driver and parse its options */ | |
255 | drv = bdrv_find_format(fmt); | |
256 | if (!drv) { | |
15654a6d | 257 | error_report("Unknown file format '%s'", fmt); |
4ac8aacd JS |
258 | return 1; |
259 | } | |
260 | ||
d402b6a2 HR |
261 | if (!drv->create_opts) { |
262 | error_report("Format driver '%s' does not support image creation", fmt); | |
263 | return 1; | |
264 | } | |
265 | ||
c282e1fd | 266 | create_opts = qemu_opts_append(create_opts, drv->create_opts); |
a283cb6e | 267 | if (filename) { |
b65a5e12 | 268 | proto_drv = bdrv_find_protocol(filename, true, &local_err); |
a283cb6e | 269 | if (!proto_drv) { |
2867ce4a | 270 | error_report_err(local_err); |
83d0521a | 271 | qemu_opts_free(create_opts); |
a283cb6e KW |
272 | return 1; |
273 | } | |
d402b6a2 | 274 | if (!proto_drv->create_opts) { |
f0998879 | 275 | error_report("Protocol driver '%s' does not support image creation", |
d402b6a2 | 276 | proto_drv->format_name); |
3ecd5a4f | 277 | qemu_opts_free(create_opts); |
d402b6a2 HR |
278 | return 1; |
279 | } | |
c282e1fd | 280 | create_opts = qemu_opts_append(create_opts, proto_drv->create_opts); |
a283cb6e KW |
281 | } |
282 | ||
f4619af0 HR |
283 | if (filename) { |
284 | printf("Supported options:\n"); | |
285 | } else { | |
286 | printf("Supported %s options:\n", fmt); | |
287 | } | |
63898712 | 288 | qemu_opts_print_help(create_opts, false); |
83d0521a | 289 | qemu_opts_free(create_opts); |
f4619af0 HR |
290 | |
291 | if (!filename) { | |
292 | printf("\n" | |
293 | "The protocol level may support further options.\n" | |
294 | "Specify the target filename to include those options.\n"); | |
295 | } | |
296 | ||
4ac8aacd JS |
297 | return 0; |
298 | } | |
299 | ||
eb769f74 | 300 | |
efaa7c4e | 301 | static BlockBackend *img_open_opts(const char *optstr, |
ce099547 | 302 | QemuOpts *opts, int flags, bool writethrough, |
335e9937 | 303 | bool quiet, bool force_share) |
eb769f74 DB |
304 | { |
305 | QDict *options; | |
306 | Error *local_err = NULL; | |
307 | BlockBackend *blk; | |
308 | options = qemu_opts_to_qdict(opts, NULL); | |
335e9937 FZ |
309 | if (force_share) { |
310 | if (qdict_haskey(options, BDRV_OPT_FORCE_SHARE) | |
4615f878 | 311 | && strcmp(qdict_get_str(options, BDRV_OPT_FORCE_SHARE), "on")) { |
335e9937 | 312 | error_report("--force-share/-U conflicts with image options"); |
cb3e7f08 | 313 | qobject_unref(options); |
335e9937 FZ |
314 | return NULL; |
315 | } | |
4615f878 | 316 | qdict_put_str(options, BDRV_OPT_FORCE_SHARE, "on"); |
335e9937 | 317 | } |
efaa7c4e | 318 | blk = blk_new_open(NULL, NULL, options, flags, &local_err); |
eb769f74 | 319 | if (!blk) { |
143605a2 | 320 | error_reportf_err(local_err, "Could not open '%s': ", optstr); |
eb769f74 DB |
321 | return NULL; |
322 | } | |
ce099547 | 323 | blk_set_enable_write_cache(blk, !writethrough); |
eb769f74 | 324 | |
eb769f74 DB |
325 | return blk; |
326 | } | |
327 | ||
efaa7c4e | 328 | static BlockBackend *img_open_file(const char *filename, |
29cf9336 | 329 | QDict *options, |
eb769f74 | 330 | const char *fmt, int flags, |
335e9937 FZ |
331 | bool writethrough, bool quiet, |
332 | bool force_share) | |
eb769f74 DB |
333 | { |
334 | BlockBackend *blk; | |
34b5d2c6 | 335 | Error *local_err = NULL; |
ad717139 | 336 | |
29cf9336 DB |
337 | if (!options) { |
338 | options = qdict_new(); | |
339 | } | |
75c23805 | 340 | if (fmt) { |
46f5ac20 | 341 | qdict_put_str(options, "driver", fmt); |
75c23805 | 342 | } |
b9eaf9ec | 343 | |
335e9937 | 344 | if (force_share) { |
579cf1d1 | 345 | qdict_put_bool(options, BDRV_OPT_FORCE_SHARE, true); |
335e9937 | 346 | } |
efaa7c4e | 347 | blk = blk_new_open(filename, NULL, options, flags, &local_err); |
5bd31326 | 348 | if (!blk) { |
c29b77f9 | 349 | error_reportf_err(local_err, "Could not open '%s': ", filename); |
eb769f74 | 350 | return NULL; |
75c23805 | 351 | } |
ce099547 | 352 | blk_set_enable_write_cache(blk, !writethrough); |
b9eaf9ec | 353 | |
eb769f74 DB |
354 | return blk; |
355 | } | |
356 | ||
357 | ||
29cf9336 DB |
358 | static int img_add_key_secrets(void *opaque, |
359 | const char *name, const char *value, | |
360 | Error **errp) | |
361 | { | |
362 | QDict *options = opaque; | |
363 | ||
364 | if (g_str_has_suffix(name, "key-secret")) { | |
187f47e9 | 365 | qdict_put_str(options, name, value); |
29cf9336 DB |
366 | } |
367 | ||
368 | return 0; | |
369 | } | |
370 | ||
29cf9336 | 371 | |
efaa7c4e | 372 | static BlockBackend *img_open(bool image_opts, |
eb769f74 | 373 | const char *filename, |
ce099547 | 374 | const char *fmt, int flags, bool writethrough, |
335e9937 | 375 | bool quiet, bool force_share) |
eb769f74 DB |
376 | { |
377 | BlockBackend *blk; | |
378 | if (image_opts) { | |
379 | QemuOpts *opts; | |
380 | if (fmt) { | |
381 | error_report("--image-opts and --format are mutually exclusive"); | |
382 | return NULL; | |
383 | } | |
384 | opts = qemu_opts_parse_noisily(qemu_find_opts("source"), | |
385 | filename, true); | |
386 | if (!opts) { | |
387 | return NULL; | |
388 | } | |
335e9937 FZ |
389 | blk = img_open_opts(filename, opts, flags, writethrough, quiet, |
390 | force_share); | |
eb769f74 | 391 | } else { |
29cf9336 | 392 | blk = img_open_file(filename, NULL, fmt, flags, writethrough, quiet, |
335e9937 | 393 | force_share); |
75c23805 | 394 | } |
7e7d56d9 | 395 | return blk; |
75c23805 FB |
396 | } |
397 | ||
eb769f74 | 398 | |
83d0521a | 399 | static int add_old_style_options(const char *fmt, QemuOpts *opts, |
eec77d9e JS |
400 | const char *base_filename, |
401 | const char *base_fmt) | |
efa84d43 | 402 | { |
6750e795 MA |
403 | Error *err = NULL; |
404 | ||
efa84d43 | 405 | if (base_filename) { |
f43e47db | 406 | qemu_opt_set(opts, BLOCK_OPT_BACKING_FILE, base_filename, &err); |
6750e795 | 407 | if (err) { |
15654a6d JS |
408 | error_report("Backing file not supported for file format '%s'", |
409 | fmt); | |
6750e795 | 410 | error_free(err); |
c2abccec | 411 | return -1; |
efa84d43 KW |
412 | } |
413 | } | |
414 | if (base_fmt) { | |
f43e47db | 415 | qemu_opt_set(opts, BLOCK_OPT_BACKING_FMT, base_fmt, &err); |
6750e795 | 416 | if (err) { |
15654a6d JS |
417 | error_report("Backing file format not supported for file " |
418 | "format '%s'", fmt); | |
6750e795 | 419 | error_free(err); |
c2abccec | 420 | return -1; |
efa84d43 KW |
421 | } |
422 | } | |
c2abccec | 423 | return 0; |
efa84d43 KW |
424 | } |
425 | ||
606caa0a MA |
426 | static int64_t cvtnum(const char *s) |
427 | { | |
f17fd4fd | 428 | int err; |
f46bfdbf | 429 | uint64_t value; |
606caa0a | 430 | |
f17fd4fd MA |
431 | err = qemu_strtosz(s, NULL, &value); |
432 | if (err < 0) { | |
433 | return err; | |
434 | } | |
f46bfdbf MA |
435 | if (value > INT64_MAX) { |
436 | return -ERANGE; | |
437 | } | |
f17fd4fd | 438 | return value; |
606caa0a MA |
439 | } |
440 | ||
ea2384d3 FB |
441 | static int img_create(int argc, char **argv) |
442 | { | |
a9300911 | 443 | int c; |
1da7cfbd | 444 | uint64_t img_size = -1; |
ea2384d3 | 445 | const char *fmt = "raw"; |
9230eaf6 | 446 | const char *base_fmt = NULL; |
ea2384d3 FB |
447 | const char *filename; |
448 | const char *base_filename = NULL; | |
9ea2ea71 | 449 | char *options = NULL; |
9b37525a | 450 | Error *local_err = NULL; |
f382d43a | 451 | bool quiet = false; |
6e6e55f5 | 452 | int flags = 0; |
3b46e624 | 453 | |
ea2384d3 | 454 | for(;;) { |
3babeb15 DB |
455 | static const struct option long_options[] = { |
456 | {"help", no_argument, 0, 'h'}, | |
457 | {"object", required_argument, 0, OPTION_OBJECT}, | |
458 | {0, 0, 0, 0} | |
459 | }; | |
6e6e55f5 | 460 | c = getopt_long(argc, argv, ":F:b:f:ho:qu", |
3babeb15 | 461 | long_options, NULL); |
b8fb60da | 462 | if (c == -1) { |
ea2384d3 | 463 | break; |
b8fb60da | 464 | } |
ea2384d3 | 465 | switch(c) { |
c9192973 SH |
466 | case ':': |
467 | missing_argument(argv[optind - 1]); | |
468 | break; | |
ef87394c | 469 | case '?': |
c9192973 SH |
470 | unrecognized_option(argv[optind - 1]); |
471 | break; | |
ea2384d3 FB |
472 | case 'h': |
473 | help(); | |
474 | break; | |
9230eaf6 AL |
475 | case 'F': |
476 | base_fmt = optarg; | |
477 | break; | |
ea2384d3 FB |
478 | case 'b': |
479 | base_filename = optarg; | |
480 | break; | |
481 | case 'f': | |
482 | fmt = optarg; | |
483 | break; | |
9ea2ea71 | 484 | case 'o': |
77386bf6 KW |
485 | if (!is_valid_option_list(optarg)) { |
486 | error_report("Invalid option list: %s", optarg); | |
487 | goto fail; | |
488 | } | |
489 | if (!options) { | |
490 | options = g_strdup(optarg); | |
491 | } else { | |
492 | char *old_options = options; | |
493 | options = g_strdup_printf("%s,%s", options, optarg); | |
494 | g_free(old_options); | |
495 | } | |
9ea2ea71 | 496 | break; |
f382d43a MR |
497 | case 'q': |
498 | quiet = true; | |
499 | break; | |
6e6e55f5 JS |
500 | case 'u': |
501 | flags |= BDRV_O_NO_BACKING; | |
502 | break; | |
3babeb15 DB |
503 | case OPTION_OBJECT: { |
504 | QemuOpts *opts; | |
505 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
506 | optarg, true); | |
507 | if (!opts) { | |
508 | goto fail; | |
509 | } | |
510 | } break; | |
ea2384d3 FB |
511 | } |
512 | } | |
9230eaf6 | 513 | |
b50cbabc | 514 | /* Get the filename */ |
a283cb6e KW |
515 | filename = (optind < argc) ? argv[optind] : NULL; |
516 | if (options && has_help_option(options)) { | |
517 | g_free(options); | |
518 | return print_block_option_help(filename, fmt); | |
519 | } | |
520 | ||
b8fb60da | 521 | if (optind >= argc) { |
ac1307ab | 522 | error_exit("Expecting image file name"); |
b8fb60da | 523 | } |
a283cb6e | 524 | optind++; |
b50cbabc | 525 | |
3babeb15 DB |
526 | if (qemu_opts_foreach(&qemu_object_opts, |
527 | user_creatable_add_opts_foreach, | |
c6e5cdfd | 528 | qemu_img_object_print_help, &error_fatal)) { |
3babeb15 DB |
529 | goto fail; |
530 | } | |
531 | ||
1da7cfbd JS |
532 | /* Get image size, if specified */ |
533 | if (optind < argc) { | |
70b4f4bb | 534 | int64_t sval; |
606caa0a MA |
535 | |
536 | sval = cvtnum(argv[optind++]); | |
537 | if (sval < 0) { | |
79443397 LG |
538 | if (sval == -ERANGE) { |
539 | error_report("Image size must be less than 8 EiB!"); | |
540 | } else { | |
541 | error_report("Invalid image size specified! You may use k, M, " | |
5e00984a KW |
542 | "G, T, P or E suffixes for "); |
543 | error_report("kilobytes, megabytes, gigabytes, terabytes, " | |
544 | "petabytes and exabytes."); | |
79443397 | 545 | } |
77386bf6 | 546 | goto fail; |
1da7cfbd JS |
547 | } |
548 | img_size = (uint64_t)sval; | |
549 | } | |
fc11eb26 | 550 | if (optind != argc) { |
ac1307ab | 551 | error_exit("Unexpected argument: %s", argv[optind]); |
fc11eb26 | 552 | } |
1da7cfbd | 553 | |
9b37525a | 554 | bdrv_img_create(filename, fmt, base_filename, base_fmt, |
6e6e55f5 | 555 | options, img_size, flags, quiet, &local_err); |
84d18f06 | 556 | if (local_err) { |
c29b77f9 | 557 | error_reportf_err(local_err, "%s: ", filename); |
77386bf6 | 558 | goto fail; |
c2abccec | 559 | } |
a9300911 | 560 | |
77386bf6 | 561 | g_free(options); |
ea2384d3 | 562 | return 0; |
77386bf6 KW |
563 | |
564 | fail: | |
565 | g_free(options); | |
566 | return 1; | |
ea2384d3 FB |
567 | } |
568 | ||
f382d43a | 569 | static void dump_json_image_check(ImageCheck *check, bool quiet) |
8599ea4c | 570 | { |
8599ea4c | 571 | QString *str; |
8599ea4c | 572 | QObject *obj; |
7d5e199a | 573 | Visitor *v = qobject_output_visitor_new(&obj); |
3b098d56 EB |
574 | |
575 | visit_type_ImageCheck(v, NULL, &check, &error_abort); | |
576 | visit_complete(v, &obj); | |
8599ea4c FS |
577 | str = qobject_to_json_pretty(obj); |
578 | assert(str != NULL); | |
f382d43a | 579 | qprintf(quiet, "%s\n", qstring_get_str(str)); |
cb3e7f08 | 580 | qobject_unref(obj); |
3b098d56 | 581 | visit_free(v); |
cb3e7f08 | 582 | qobject_unref(str); |
8599ea4c FS |
583 | } |
584 | ||
f382d43a | 585 | static void dump_human_image_check(ImageCheck *check, bool quiet) |
8599ea4c FS |
586 | { |
587 | if (!(check->corruptions || check->leaks || check->check_errors)) { | |
f382d43a | 588 | qprintf(quiet, "No errors were found on the image.\n"); |
8599ea4c FS |
589 | } else { |
590 | if (check->corruptions) { | |
f382d43a MR |
591 | qprintf(quiet, "\n%" PRId64 " errors were found on the image.\n" |
592 | "Data may be corrupted, or further writes to the image " | |
593 | "may corrupt it.\n", | |
594 | check->corruptions); | |
8599ea4c FS |
595 | } |
596 | ||
597 | if (check->leaks) { | |
f382d43a MR |
598 | qprintf(quiet, |
599 | "\n%" PRId64 " leaked clusters were found on the image.\n" | |
600 | "This means waste of disk space, but no harm to data.\n", | |
601 | check->leaks); | |
8599ea4c FS |
602 | } |
603 | ||
604 | if (check->check_errors) { | |
f382d43a MR |
605 | qprintf(quiet, |
606 | "\n%" PRId64 | |
607 | " internal errors have occurred during the check.\n", | |
608 | check->check_errors); | |
8599ea4c FS |
609 | } |
610 | } | |
611 | ||
612 | if (check->total_clusters != 0 && check->allocated_clusters != 0) { | |
f382d43a MR |
613 | qprintf(quiet, "%" PRId64 "/%" PRId64 " = %0.2f%% allocated, " |
614 | "%0.2f%% fragmented, %0.2f%% compressed clusters\n", | |
615 | check->allocated_clusters, check->total_clusters, | |
616 | check->allocated_clusters * 100.0 / check->total_clusters, | |
617 | check->fragmented_clusters * 100.0 / check->allocated_clusters, | |
618 | check->compressed_clusters * 100.0 / | |
619 | check->allocated_clusters); | |
8599ea4c FS |
620 | } |
621 | ||
622 | if (check->image_end_offset) { | |
f382d43a MR |
623 | qprintf(quiet, |
624 | "Image end offset: %" PRId64 "\n", check->image_end_offset); | |
8599ea4c FS |
625 | } |
626 | } | |
627 | ||
628 | static int collect_image_check(BlockDriverState *bs, | |
629 | ImageCheck *check, | |
630 | const char *filename, | |
631 | const char *fmt, | |
632 | int fix) | |
633 | { | |
634 | int ret; | |
635 | BdrvCheckResult result; | |
636 | ||
637 | ret = bdrv_check(bs, &result, fix); | |
638 | if (ret < 0) { | |
639 | return ret; | |
640 | } | |
641 | ||
642 | check->filename = g_strdup(filename); | |
643 | check->format = g_strdup(bdrv_get_format_name(bs)); | |
644 | check->check_errors = result.check_errors; | |
645 | check->corruptions = result.corruptions; | |
646 | check->has_corruptions = result.corruptions != 0; | |
647 | check->leaks = result.leaks; | |
648 | check->has_leaks = result.leaks != 0; | |
649 | check->corruptions_fixed = result.corruptions_fixed; | |
650 | check->has_corruptions_fixed = result.corruptions != 0; | |
651 | check->leaks_fixed = result.leaks_fixed; | |
652 | check->has_leaks_fixed = result.leaks != 0; | |
653 | check->image_end_offset = result.image_end_offset; | |
654 | check->has_image_end_offset = result.image_end_offset != 0; | |
655 | check->total_clusters = result.bfi.total_clusters; | |
656 | check->has_total_clusters = result.bfi.total_clusters != 0; | |
657 | check->allocated_clusters = result.bfi.allocated_clusters; | |
658 | check->has_allocated_clusters = result.bfi.allocated_clusters != 0; | |
659 | check->fragmented_clusters = result.bfi.fragmented_clusters; | |
660 | check->has_fragmented_clusters = result.bfi.fragmented_clusters != 0; | |
e6439d78 SH |
661 | check->compressed_clusters = result.bfi.compressed_clusters; |
662 | check->has_compressed_clusters = result.bfi.compressed_clusters != 0; | |
8599ea4c FS |
663 | |
664 | return 0; | |
665 | } | |
666 | ||
e076f338 KW |
667 | /* |
668 | * Checks an image for consistency. Exit codes: | |
669 | * | |
d6635c4d HR |
670 | * 0 - Check completed, image is good |
671 | * 1 - Check not completed because of internal errors | |
672 | * 2 - Check completed, image is corrupted | |
673 | * 3 - Check completed, image has leaked clusters, but is good otherwise | |
674 | * 63 - Checks are not supported by the image format | |
e076f338 | 675 | */ |
1585969c AL |
676 | static int img_check(int argc, char **argv) |
677 | { | |
678 | int c, ret; | |
8599ea4c | 679 | OutputFormat output_format = OFORMAT_HUMAN; |
40055951 | 680 | const char *filename, *fmt, *output, *cache; |
26f54e9a | 681 | BlockBackend *blk; |
1585969c | 682 | BlockDriverState *bs; |
4534ff54 | 683 | int fix = 0; |
ce099547 KW |
684 | int flags = BDRV_O_CHECK; |
685 | bool writethrough; | |
7e7d56d9 | 686 | ImageCheck *check; |
f382d43a | 687 | bool quiet = false; |
eb769f74 | 688 | bool image_opts = false; |
335e9937 | 689 | bool force_share = false; |
1585969c AL |
690 | |
691 | fmt = NULL; | |
8599ea4c | 692 | output = NULL; |
40055951 | 693 | cache = BDRV_DEFAULT_CACHE; |
ce099547 | 694 | |
1585969c | 695 | for(;;) { |
8599ea4c FS |
696 | int option_index = 0; |
697 | static const struct option long_options[] = { | |
698 | {"help", no_argument, 0, 'h'}, | |
699 | {"format", required_argument, 0, 'f'}, | |
4fd6a984 | 700 | {"repair", required_argument, 0, 'r'}, |
8599ea4c | 701 | {"output", required_argument, 0, OPTION_OUTPUT}, |
3babeb15 | 702 | {"object", required_argument, 0, OPTION_OBJECT}, |
eb769f74 | 703 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
335e9937 | 704 | {"force-share", no_argument, 0, 'U'}, |
8599ea4c FS |
705 | {0, 0, 0, 0} |
706 | }; | |
335e9937 | 707 | c = getopt_long(argc, argv, ":hf:r:T:qU", |
8599ea4c | 708 | long_options, &option_index); |
b8fb60da | 709 | if (c == -1) { |
1585969c | 710 | break; |
b8fb60da | 711 | } |
1585969c | 712 | switch(c) { |
c9192973 SH |
713 | case ':': |
714 | missing_argument(argv[optind - 1]); | |
715 | break; | |
ef87394c | 716 | case '?': |
c9192973 SH |
717 | unrecognized_option(argv[optind - 1]); |
718 | break; | |
1585969c AL |
719 | case 'h': |
720 | help(); | |
721 | break; | |
722 | case 'f': | |
723 | fmt = optarg; | |
724 | break; | |
4534ff54 KW |
725 | case 'r': |
726 | flags |= BDRV_O_RDWR; | |
727 | ||
728 | if (!strcmp(optarg, "leaks")) { | |
729 | fix = BDRV_FIX_LEAKS; | |
730 | } else if (!strcmp(optarg, "all")) { | |
731 | fix = BDRV_FIX_LEAKS | BDRV_FIX_ERRORS; | |
732 | } else { | |
ac1307ab FZ |
733 | error_exit("Unknown option value for -r " |
734 | "(expecting 'leaks' or 'all'): %s", optarg); | |
4534ff54 KW |
735 | } |
736 | break; | |
8599ea4c FS |
737 | case OPTION_OUTPUT: |
738 | output = optarg; | |
739 | break; | |
40055951 HR |
740 | case 'T': |
741 | cache = optarg; | |
742 | break; | |
f382d43a MR |
743 | case 'q': |
744 | quiet = true; | |
745 | break; | |
335e9937 FZ |
746 | case 'U': |
747 | force_share = true; | |
748 | break; | |
3babeb15 DB |
749 | case OPTION_OBJECT: { |
750 | QemuOpts *opts; | |
751 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
752 | optarg, true); | |
753 | if (!opts) { | |
754 | return 1; | |
755 | } | |
756 | } break; | |
eb769f74 DB |
757 | case OPTION_IMAGE_OPTS: |
758 | image_opts = true; | |
759 | break; | |
1585969c AL |
760 | } |
761 | } | |
fc11eb26 | 762 | if (optind != argc - 1) { |
ac1307ab | 763 | error_exit("Expecting one image file name"); |
b8fb60da | 764 | } |
1585969c AL |
765 | filename = argv[optind++]; |
766 | ||
8599ea4c FS |
767 | if (output && !strcmp(output, "json")) { |
768 | output_format = OFORMAT_JSON; | |
769 | } else if (output && !strcmp(output, "human")) { | |
770 | output_format = OFORMAT_HUMAN; | |
771 | } else if (output) { | |
772 | error_report("--output must be used with human or json as argument."); | |
773 | return 1; | |
774 | } | |
775 | ||
3babeb15 DB |
776 | if (qemu_opts_foreach(&qemu_object_opts, |
777 | user_creatable_add_opts_foreach, | |
c6e5cdfd | 778 | qemu_img_object_print_help, &error_fatal)) { |
3babeb15 DB |
779 | return 1; |
780 | } | |
781 | ||
ce099547 | 782 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); |
40055951 HR |
783 | if (ret < 0) { |
784 | error_report("Invalid source cache option: %s", cache); | |
785 | return 1; | |
786 | } | |
787 | ||
335e9937 FZ |
788 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet, |
789 | force_share); | |
7e7d56d9 MA |
790 | if (!blk) { |
791 | return 1; | |
c2abccec | 792 | } |
7e7d56d9 | 793 | bs = blk_bs(blk); |
8599ea4c FS |
794 | |
795 | check = g_new0(ImageCheck, 1); | |
796 | ret = collect_image_check(bs, check, filename, fmt, fix); | |
e076f338 KW |
797 | |
798 | if (ret == -ENOTSUP) { | |
55d492d7 | 799 | error_report("This image format does not support checks"); |
fefddf95 | 800 | ret = 63; |
8599ea4c | 801 | goto fail; |
e076f338 KW |
802 | } |
803 | ||
8599ea4c FS |
804 | if (check->corruptions_fixed || check->leaks_fixed) { |
805 | int corruptions_fixed, leaks_fixed; | |
ccf34716 | 806 | |
8599ea4c FS |
807 | leaks_fixed = check->leaks_fixed; |
808 | corruptions_fixed = check->corruptions_fixed; | |
e076f338 | 809 | |
8599ea4c | 810 | if (output_format == OFORMAT_HUMAN) { |
f382d43a MR |
811 | qprintf(quiet, |
812 | "The following inconsistencies were found and repaired:\n\n" | |
813 | " %" PRId64 " leaked clusters\n" | |
814 | " %" PRId64 " corruptions\n\n" | |
815 | "Double checking the fixed image now...\n", | |
816 | check->leaks_fixed, | |
817 | check->corruptions_fixed); | |
e076f338 KW |
818 | } |
819 | ||
fc124ea1 PN |
820 | qapi_free_ImageCheck(check); |
821 | check = g_new0(ImageCheck, 1); | |
8599ea4c | 822 | ret = collect_image_check(bs, check, filename, fmt, 0); |
1585969c | 823 | |
8599ea4c FS |
824 | check->leaks_fixed = leaks_fixed; |
825 | check->corruptions_fixed = corruptions_fixed; | |
f8111c24 DXW |
826 | } |
827 | ||
832390a5 HR |
828 | if (!ret) { |
829 | switch (output_format) { | |
830 | case OFORMAT_HUMAN: | |
831 | dump_human_image_check(check, quiet); | |
832 | break; | |
833 | case OFORMAT_JSON: | |
834 | dump_json_image_check(check, quiet); | |
835 | break; | |
836 | } | |
c6bb9ad1 FS |
837 | } |
838 | ||
8599ea4c | 839 | if (ret || check->check_errors) { |
832390a5 HR |
840 | if (ret) { |
841 | error_report("Check failed: %s", strerror(-ret)); | |
842 | } else { | |
843 | error_report("Check failed"); | |
844 | } | |
8599ea4c FS |
845 | ret = 1; |
846 | goto fail; | |
c2abccec | 847 | } |
e076f338 | 848 | |
8599ea4c FS |
849 | if (check->corruptions) { |
850 | ret = 2; | |
851 | } else if (check->leaks) { | |
852 | ret = 3; | |
e076f338 | 853 | } else { |
8599ea4c | 854 | ret = 0; |
e076f338 | 855 | } |
8599ea4c FS |
856 | |
857 | fail: | |
858 | qapi_free_ImageCheck(check); | |
26f54e9a | 859 | blk_unref(blk); |
8599ea4c | 860 | return ret; |
1585969c AL |
861 | } |
862 | ||
d4a3238a HR |
863 | typedef struct CommonBlockJobCBInfo { |
864 | BlockDriverState *bs; | |
865 | Error **errp; | |
866 | } CommonBlockJobCBInfo; | |
867 | ||
868 | static void common_block_job_cb(void *opaque, int ret) | |
869 | { | |
870 | CommonBlockJobCBInfo *cbi = opaque; | |
871 | ||
872 | if (ret < 0) { | |
873 | error_setg_errno(cbi->errp, -ret, "Block job failed"); | |
874 | } | |
d4a3238a HR |
875 | } |
876 | ||
877 | static void run_block_job(BlockJob *job, Error **errp) | |
878 | { | |
b75536c9 | 879 | AioContext *aio_context = blk_get_aio_context(job->blk); |
4172a003 | 880 | int ret = 0; |
d4a3238a | 881 | |
9e944cb4 | 882 | aio_context_acquire(aio_context); |
80fa2c75 | 883 | job_ref(&job->job); |
d4a3238a | 884 | do { |
30a5c887 | 885 | float progress = 0.0f; |
d4a3238a | 886 | aio_poll(aio_context, true); |
01fe1ca9 VSO |
887 | if (job->job.progress.total) { |
888 | progress = (float)job->job.progress.current / | |
889 | job->job.progress.total * 100.f; | |
30a5c887 KW |
890 | } |
891 | qemu_progress_print(progress, 0); | |
df956ae2 | 892 | } while (!job_is_ready(&job->job) && !job_is_completed(&job->job)); |
d4a3238a | 893 | |
dbe5e6c1 | 894 | if (!job_is_completed(&job->job)) { |
3d70ff53 | 895 | ret = job_complete_sync(&job->job, errp); |
4172a003 | 896 | } else { |
4ad35181 | 897 | ret = job->job.ret; |
4172a003 | 898 | } |
80fa2c75 | 899 | job_unref(&job->job); |
9e944cb4 | 900 | aio_context_release(aio_context); |
687fa1d8 | 901 | |
4172a003 SJ |
902 | /* publish completion progress only when success */ |
903 | if (!ret) { | |
904 | qemu_progress_print(100.f, 0); | |
905 | } | |
d4a3238a HR |
906 | } |
907 | ||
ea2384d3 FB |
908 | static int img_commit(int argc, char **argv) |
909 | { | |
661a0f71 | 910 | int c, ret, flags; |
1b22bffd | 911 | const char *filename, *fmt, *cache, *base; |
26f54e9a | 912 | BlockBackend *blk; |
d4a3238a | 913 | BlockDriverState *bs, *base_bs; |
4ef85a9c | 914 | BlockJob *job; |
687fa1d8 | 915 | bool progress = false, quiet = false, drop = false; |
ce099547 | 916 | bool writethrough; |
d4a3238a HR |
917 | Error *local_err = NULL; |
918 | CommonBlockJobCBInfo cbi; | |
eb769f74 | 919 | bool image_opts = false; |
9e944cb4 | 920 | AioContext *aio_context; |
ea2384d3 FB |
921 | |
922 | fmt = NULL; | |
661a0f71 | 923 | cache = BDRV_DEFAULT_CACHE; |
1b22bffd | 924 | base = NULL; |
ea2384d3 | 925 | for(;;) { |
3babeb15 DB |
926 | static const struct option long_options[] = { |
927 | {"help", no_argument, 0, 'h'}, | |
928 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 929 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
930 | {0, 0, 0, 0} |
931 | }; | |
c9192973 | 932 | c = getopt_long(argc, argv, ":f:ht:b:dpq", |
3babeb15 | 933 | long_options, NULL); |
b8fb60da | 934 | if (c == -1) { |
ea2384d3 | 935 | break; |
b8fb60da | 936 | } |
ea2384d3 | 937 | switch(c) { |
c9192973 SH |
938 | case ':': |
939 | missing_argument(argv[optind - 1]); | |
940 | break; | |
ef87394c | 941 | case '?': |
c9192973 SH |
942 | unrecognized_option(argv[optind - 1]); |
943 | break; | |
ea2384d3 FB |
944 | case 'h': |
945 | help(); | |
946 | break; | |
947 | case 'f': | |
948 | fmt = optarg; | |
949 | break; | |
661a0f71 FS |
950 | case 't': |
951 | cache = optarg; | |
952 | break; | |
1b22bffd HR |
953 | case 'b': |
954 | base = optarg; | |
955 | /* -b implies -d */ | |
956 | drop = true; | |
957 | break; | |
9a86fe48 HR |
958 | case 'd': |
959 | drop = true; | |
960 | break; | |
687fa1d8 HR |
961 | case 'p': |
962 | progress = true; | |
963 | break; | |
f382d43a MR |
964 | case 'q': |
965 | quiet = true; | |
966 | break; | |
3babeb15 DB |
967 | case OPTION_OBJECT: { |
968 | QemuOpts *opts; | |
969 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
970 | optarg, true); | |
971 | if (!opts) { | |
972 | return 1; | |
973 | } | |
974 | } break; | |
eb769f74 DB |
975 | case OPTION_IMAGE_OPTS: |
976 | image_opts = true; | |
977 | break; | |
ea2384d3 FB |
978 | } |
979 | } | |
687fa1d8 HR |
980 | |
981 | /* Progress is not shown in Quiet mode */ | |
982 | if (quiet) { | |
983 | progress = false; | |
984 | } | |
985 | ||
fc11eb26 | 986 | if (optind != argc - 1) { |
ac1307ab | 987 | error_exit("Expecting one image file name"); |
b8fb60da | 988 | } |
ea2384d3 FB |
989 | filename = argv[optind++]; |
990 | ||
3babeb15 DB |
991 | if (qemu_opts_foreach(&qemu_object_opts, |
992 | user_creatable_add_opts_foreach, | |
c6e5cdfd | 993 | qemu_img_object_print_help, &error_fatal)) { |
3babeb15 DB |
994 | return 1; |
995 | } | |
996 | ||
9a86fe48 | 997 | flags = BDRV_O_RDWR | BDRV_O_UNMAP; |
ce099547 | 998 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); |
661a0f71 FS |
999 | if (ret < 0) { |
1000 | error_report("Invalid cache option: %s", cache); | |
a3981eb9 | 1001 | return 1; |
661a0f71 FS |
1002 | } |
1003 | ||
335e9937 FZ |
1004 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet, |
1005 | false); | |
7e7d56d9 MA |
1006 | if (!blk) { |
1007 | return 1; | |
c2abccec | 1008 | } |
7e7d56d9 MA |
1009 | bs = blk_bs(blk); |
1010 | ||
687fa1d8 HR |
1011 | qemu_progress_init(progress, 1.f); |
1012 | qemu_progress_print(0.f, 100); | |
1013 | ||
1b22bffd HR |
1014 | if (base) { |
1015 | base_bs = bdrv_find_backing_image(bs, base); | |
1016 | if (!base_bs) { | |
6b33f3ae HR |
1017 | error_setg(&local_err, |
1018 | "Did not find '%s' in the backing chain of '%s'", | |
1019 | base, filename); | |
1b22bffd HR |
1020 | goto done; |
1021 | } | |
1022 | } else { | |
1023 | /* This is different from QMP, which by default uses the deepest file in | |
1024 | * the backing chain (i.e., the very base); however, the traditional | |
1025 | * behavior of qemu-img commit is using the immediate backing file. */ | |
760e0063 | 1026 | base_bs = backing_bs(bs); |
1b22bffd HR |
1027 | if (!base_bs) { |
1028 | error_setg(&local_err, "Image does not have a backing file"); | |
1029 | goto done; | |
1030 | } | |
d4a3238a HR |
1031 | } |
1032 | ||
1033 | cbi = (CommonBlockJobCBInfo){ | |
1034 | .errp = &local_err, | |
1035 | .bs = bs, | |
1036 | }; | |
1037 | ||
9e944cb4 PB |
1038 | aio_context = bdrv_get_aio_context(bs); |
1039 | aio_context_acquire(aio_context); | |
bb02b65c | 1040 | commit_active_start("commit", bs, base_bs, JOB_DEFAULT, 0, |
0db832f4 | 1041 | BLOCKDEV_ON_ERROR_REPORT, NULL, common_block_job_cb, |
78bbd910 | 1042 | &cbi, false, &local_err); |
9e944cb4 | 1043 | aio_context_release(aio_context); |
d4a3238a HR |
1044 | if (local_err) { |
1045 | goto done; | |
ea2384d3 FB |
1046 | } |
1047 | ||
3f09bfbc KW |
1048 | /* When the block job completes, the BlockBackend reference will point to |
1049 | * the old backing file. In order to avoid that the top image is already | |
1050 | * deleted, so we can still empty it afterwards, increment the reference | |
1051 | * counter here preemptively. */ | |
9a86fe48 | 1052 | if (!drop) { |
3f09bfbc | 1053 | bdrv_ref(bs); |
9a86fe48 HR |
1054 | } |
1055 | ||
4ef85a9c | 1056 | job = block_job_get("commit"); |
2e2db260 | 1057 | assert(job); |
4ef85a9c | 1058 | run_block_job(job, &local_err); |
9a86fe48 HR |
1059 | if (local_err) { |
1060 | goto unref_backing; | |
1061 | } | |
1062 | ||
3f09bfbc KW |
1063 | if (!drop && bs->drv->bdrv_make_empty) { |
1064 | ret = bs->drv->bdrv_make_empty(bs); | |
9a86fe48 HR |
1065 | if (ret) { |
1066 | error_setg_errno(&local_err, -ret, "Could not empty %s", | |
1067 | filename); | |
1068 | goto unref_backing; | |
1069 | } | |
1070 | } | |
1071 | ||
1072 | unref_backing: | |
1073 | if (!drop) { | |
3f09bfbc | 1074 | bdrv_unref(bs); |
9a86fe48 | 1075 | } |
d4a3238a HR |
1076 | |
1077 | done: | |
687fa1d8 HR |
1078 | qemu_progress_end(); |
1079 | ||
26f54e9a | 1080 | blk_unref(blk); |
d4a3238a HR |
1081 | |
1082 | if (local_err) { | |
6936f299 | 1083 | error_report_err(local_err); |
c2abccec MK |
1084 | return 1; |
1085 | } | |
d4a3238a HR |
1086 | |
1087 | qprintf(quiet, "Image committed.\n"); | |
ea2384d3 FB |
1088 | return 0; |
1089 | } | |
1090 | ||
debb38a4 EB |
1091 | /* |
1092 | * Returns -1 if 'buf' contains only zeroes, otherwise the byte index | |
1093 | * of the first sector boundary within buf where the sector contains a | |
1094 | * non-zero byte. This function is robust to a buffer that is not | |
1095 | * sector-aligned. | |
1096 | */ | |
1097 | static int64_t find_nonzero(const uint8_t *buf, int64_t n) | |
1098 | { | |
1099 | int64_t i; | |
1100 | int64_t end = QEMU_ALIGN_DOWN(n, BDRV_SECTOR_SIZE); | |
1101 | ||
1102 | for (i = 0; i < end; i += BDRV_SECTOR_SIZE) { | |
1103 | if (!buffer_is_zero(buf + i, BDRV_SECTOR_SIZE)) { | |
1104 | return i; | |
1105 | } | |
1106 | } | |
1107 | if (i < n && !buffer_is_zero(buf + i, n - end)) { | |
1108 | return i; | |
1109 | } | |
1110 | return -1; | |
1111 | } | |
1112 | ||
f58c7b35 TS |
1113 | /* |
1114 | * Returns true iff the first sector pointed to by 'buf' contains at least | |
1115 | * a non-NUL byte. | |
1116 | * | |
1117 | * 'pnum' is set to the number of sectors (including and immediately following | |
1118 | * the first one) that are known to be in the same allocated/unallocated state. | |
8dcd3c9b PL |
1119 | * The function will try to align the end offset to alignment boundaries so |
1120 | * that the request will at least end aligned and consequtive requests will | |
1121 | * also start at an aligned offset. | |
f58c7b35 | 1122 | */ |
8dcd3c9b PL |
1123 | static int is_allocated_sectors(const uint8_t *buf, int n, int *pnum, |
1124 | int64_t sector_num, int alignment) | |
ea2384d3 | 1125 | { |
1a6d39fd | 1126 | bool is_zero; |
8dcd3c9b | 1127 | int i, tail; |
ea2384d3 FB |
1128 | |
1129 | if (n <= 0) { | |
1130 | *pnum = 0; | |
1131 | return 0; | |
1132 | } | |
1a6d39fd | 1133 | is_zero = buffer_is_zero(buf, 512); |
ea2384d3 FB |
1134 | for(i = 1; i < n; i++) { |
1135 | buf += 512; | |
1a6d39fd | 1136 | if (is_zero != buffer_is_zero(buf, 512)) { |
ea2384d3 | 1137 | break; |
1a6d39fd | 1138 | } |
ea2384d3 | 1139 | } |
8dcd3c9b PL |
1140 | |
1141 | tail = (sector_num + i) & (alignment - 1); | |
1142 | if (tail) { | |
1143 | if (is_zero && i <= tail) { | |
1144 | /* treat unallocated areas which only consist | |
1145 | * of a small tail as allocated. */ | |
1146 | is_zero = false; | |
1147 | } | |
1148 | if (!is_zero) { | |
1149 | /* align up end offset of allocated areas. */ | |
1150 | i += alignment - tail; | |
1151 | i = MIN(i, n); | |
1152 | } else { | |
1153 | /* align down end offset of zero areas. */ | |
1154 | i -= tail; | |
1155 | } | |
1156 | } | |
ea2384d3 | 1157 | *pnum = i; |
1a6d39fd | 1158 | return !is_zero; |
ea2384d3 FB |
1159 | } |
1160 | ||
a22f123c KW |
1161 | /* |
1162 | * Like is_allocated_sectors, but if the buffer starts with a used sector, | |
1163 | * up to 'min' consecutive sectors containing zeros are ignored. This avoids | |
1164 | * breaking up write requests for only small sparse areas. | |
1165 | */ | |
1166 | static int is_allocated_sectors_min(const uint8_t *buf, int n, int *pnum, | |
8dcd3c9b | 1167 | int min, int64_t sector_num, int alignment) |
a22f123c KW |
1168 | { |
1169 | int ret; | |
1170 | int num_checked, num_used; | |
1171 | ||
1172 | if (n < min) { | |
1173 | min = n; | |
1174 | } | |
1175 | ||
8dcd3c9b | 1176 | ret = is_allocated_sectors(buf, n, pnum, sector_num, alignment); |
a22f123c KW |
1177 | if (!ret) { |
1178 | return ret; | |
1179 | } | |
1180 | ||
1181 | num_used = *pnum; | |
1182 | buf += BDRV_SECTOR_SIZE * *pnum; | |
1183 | n -= *pnum; | |
8dcd3c9b | 1184 | sector_num += *pnum; |
a22f123c KW |
1185 | num_checked = num_used; |
1186 | ||
1187 | while (n > 0) { | |
8dcd3c9b | 1188 | ret = is_allocated_sectors(buf, n, pnum, sector_num, alignment); |
a22f123c KW |
1189 | |
1190 | buf += BDRV_SECTOR_SIZE * *pnum; | |
1191 | n -= *pnum; | |
8dcd3c9b | 1192 | sector_num += *pnum; |
a22f123c KW |
1193 | num_checked += *pnum; |
1194 | if (ret) { | |
1195 | num_used = num_checked; | |
1196 | } else if (*pnum >= min) { | |
1197 | break; | |
1198 | } | |
1199 | } | |
1200 | ||
1201 | *pnum = num_used; | |
1202 | return 1; | |
1203 | } | |
1204 | ||
3e85c6fd | 1205 | /* |
dc61cd3b EB |
1206 | * Compares two buffers sector by sector. Returns 0 if the first |
1207 | * sector of each buffer matches, non-zero otherwise. | |
3e85c6fd | 1208 | * |
dc61cd3b EB |
1209 | * pnum is set to the sector-aligned size of the buffer prefix that |
1210 | * has the same matching status as the first sector. | |
3e85c6fd | 1211 | */ |
dc61cd3b EB |
1212 | static int compare_buffers(const uint8_t *buf1, const uint8_t *buf2, |
1213 | int64_t bytes, int64_t *pnum) | |
3e85c6fd | 1214 | { |
8c1ac475 | 1215 | bool res; |
dc61cd3b | 1216 | int64_t i = MIN(bytes, BDRV_SECTOR_SIZE); |
3e85c6fd | 1217 | |
dc61cd3b | 1218 | assert(bytes > 0); |
3e85c6fd | 1219 | |
dc61cd3b EB |
1220 | res = !!memcmp(buf1, buf2, i); |
1221 | while (i < bytes) { | |
1222 | int64_t len = MIN(bytes - i, BDRV_SECTOR_SIZE); | |
3e85c6fd | 1223 | |
dc61cd3b | 1224 | if (!!memcmp(buf1 + i, buf2 + i, len) != res) { |
3e85c6fd KW |
1225 | break; |
1226 | } | |
dc61cd3b | 1227 | i += len; |
3e85c6fd KW |
1228 | } |
1229 | ||
1230 | *pnum = i; | |
1231 | return res; | |
1232 | } | |
1233 | ||
97ede57a | 1234 | #define IO_BUF_SIZE (2 * MiB) |
ea2384d3 | 1235 | |
d14ed18c MR |
1236 | /* |
1237 | * Check if passed sectors are empty (not allocated or contain only 0 bytes) | |
1238 | * | |
0608e40e EB |
1239 | * Intended for use by 'qemu-img compare': Returns 0 in case sectors are |
1240 | * filled with 0, 1 if sectors contain non-zero data (this is a comparison | |
1241 | * failure), and 4 on error (the exit status for read errors), after emitting | |
1242 | * an error message. | |
d14ed18c | 1243 | * |
f1d3cd79 | 1244 | * @param blk: BlockBackend for the image |
c41508ed EB |
1245 | * @param offset: Starting offset to check |
1246 | * @param bytes: Number of bytes to check | |
d14ed18c MR |
1247 | * @param filename: Name of disk file we are checking (logging purpose) |
1248 | * @param buffer: Allocated buffer for storing read data | |
1249 | * @param quiet: Flag for quiet mode | |
1250 | */ | |
c41508ed EB |
1251 | static int check_empty_sectors(BlockBackend *blk, int64_t offset, |
1252 | int64_t bytes, const char *filename, | |
d14ed18c MR |
1253 | uint8_t *buffer, bool quiet) |
1254 | { | |
debb38a4 EB |
1255 | int ret = 0; |
1256 | int64_t idx; | |
1257 | ||
c41508ed | 1258 | ret = blk_pread(blk, offset, buffer, bytes); |
d14ed18c MR |
1259 | if (ret < 0) { |
1260 | error_report("Error while reading offset %" PRId64 " of %s: %s", | |
c41508ed | 1261 | offset, filename, strerror(-ret)); |
0608e40e | 1262 | return 4; |
d14ed18c | 1263 | } |
c41508ed | 1264 | idx = find_nonzero(buffer, bytes); |
debb38a4 | 1265 | if (idx >= 0) { |
d14ed18c | 1266 | qprintf(quiet, "Content mismatch at offset %" PRId64 "!\n", |
c41508ed | 1267 | offset + idx); |
d14ed18c MR |
1268 | return 1; |
1269 | } | |
1270 | ||
1271 | return 0; | |
1272 | } | |
1273 | ||
1274 | /* | |
1275 | * Compares two images. Exit codes: | |
1276 | * | |
1277 | * 0 - Images are identical | |
1278 | * 1 - Images differ | |
1279 | * >1 - Error occurred | |
1280 | */ | |
1281 | static int img_compare(int argc, char **argv) | |
1282 | { | |
40055951 | 1283 | const char *fmt1 = NULL, *fmt2 = NULL, *cache, *filename1, *filename2; |
26f54e9a | 1284 | BlockBackend *blk1, *blk2; |
d14ed18c | 1285 | BlockDriverState *bs1, *bs2; |
033d9fc2 | 1286 | int64_t total_size1, total_size2; |
d14ed18c | 1287 | uint8_t *buf1 = NULL, *buf2 = NULL; |
31826642 | 1288 | int64_t pnum1, pnum2; |
d14ed18c MR |
1289 | int allocated1, allocated2; |
1290 | int ret = 0; /* return value - 0 Ident, 1 Different, >1 Error */ | |
1291 | bool progress = false, quiet = false, strict = false; | |
40055951 | 1292 | int flags; |
ce099547 | 1293 | bool writethrough; |
033d9fc2 EB |
1294 | int64_t total_size; |
1295 | int64_t offset = 0; | |
1296 | int64_t chunk; | |
dc61cd3b | 1297 | int c; |
d14ed18c | 1298 | uint64_t progress_base; |
eb769f74 | 1299 | bool image_opts = false; |
335e9937 | 1300 | bool force_share = false; |
d14ed18c | 1301 | |
40055951 | 1302 | cache = BDRV_DEFAULT_CACHE; |
d14ed18c | 1303 | for (;;) { |
3babeb15 DB |
1304 | static const struct option long_options[] = { |
1305 | {"help", no_argument, 0, 'h'}, | |
1306 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 1307 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
335e9937 | 1308 | {"force-share", no_argument, 0, 'U'}, |
3babeb15 DB |
1309 | {0, 0, 0, 0} |
1310 | }; | |
335e9937 | 1311 | c = getopt_long(argc, argv, ":hf:F:T:pqsU", |
3babeb15 | 1312 | long_options, NULL); |
d14ed18c MR |
1313 | if (c == -1) { |
1314 | break; | |
1315 | } | |
1316 | switch (c) { | |
c9192973 SH |
1317 | case ':': |
1318 | missing_argument(argv[optind - 1]); | |
1319 | break; | |
d14ed18c | 1320 | case '?': |
c9192973 SH |
1321 | unrecognized_option(argv[optind - 1]); |
1322 | break; | |
d14ed18c MR |
1323 | case 'h': |
1324 | help(); | |
1325 | break; | |
1326 | case 'f': | |
1327 | fmt1 = optarg; | |
1328 | break; | |
1329 | case 'F': | |
1330 | fmt2 = optarg; | |
1331 | break; | |
40055951 HR |
1332 | case 'T': |
1333 | cache = optarg; | |
1334 | break; | |
d14ed18c MR |
1335 | case 'p': |
1336 | progress = true; | |
1337 | break; | |
1338 | case 'q': | |
1339 | quiet = true; | |
1340 | break; | |
1341 | case 's': | |
1342 | strict = true; | |
1343 | break; | |
335e9937 FZ |
1344 | case 'U': |
1345 | force_share = true; | |
1346 | break; | |
3babeb15 DB |
1347 | case OPTION_OBJECT: { |
1348 | QemuOpts *opts; | |
1349 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
1350 | optarg, true); | |
1351 | if (!opts) { | |
1352 | ret = 2; | |
1353 | goto out4; | |
1354 | } | |
1355 | } break; | |
eb769f74 DB |
1356 | case OPTION_IMAGE_OPTS: |
1357 | image_opts = true; | |
1358 | break; | |
d14ed18c MR |
1359 | } |
1360 | } | |
1361 | ||
1362 | /* Progress is not shown in Quiet mode */ | |
1363 | if (quiet) { | |
1364 | progress = false; | |
1365 | } | |
1366 | ||
1367 | ||
fc11eb26 | 1368 | if (optind != argc - 2) { |
ac1307ab | 1369 | error_exit("Expecting two image file names"); |
d14ed18c MR |
1370 | } |
1371 | filename1 = argv[optind++]; | |
1372 | filename2 = argv[optind++]; | |
1373 | ||
3babeb15 DB |
1374 | if (qemu_opts_foreach(&qemu_object_opts, |
1375 | user_creatable_add_opts_foreach, | |
c6e5cdfd | 1376 | qemu_img_object_print_help, &error_fatal)) { |
3babeb15 DB |
1377 | ret = 2; |
1378 | goto out4; | |
1379 | } | |
1380 | ||
cbda016d SH |
1381 | /* Initialize before goto out */ |
1382 | qemu_progress_init(progress, 2.0); | |
1383 | ||
ce099547 KW |
1384 | flags = 0; |
1385 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); | |
40055951 HR |
1386 | if (ret < 0) { |
1387 | error_report("Invalid source cache option: %s", cache); | |
1388 | ret = 2; | |
1389 | goto out3; | |
1390 | } | |
1391 | ||
335e9937 FZ |
1392 | blk1 = img_open(image_opts, filename1, fmt1, flags, writethrough, quiet, |
1393 | force_share); | |
7e7d56d9 | 1394 | if (!blk1) { |
d14ed18c | 1395 | ret = 2; |
7e7d56d9 | 1396 | goto out3; |
d14ed18c MR |
1397 | } |
1398 | ||
335e9937 FZ |
1399 | blk2 = img_open(image_opts, filename2, fmt2, flags, writethrough, quiet, |
1400 | force_share); | |
7e7d56d9 | 1401 | if (!blk2) { |
d14ed18c | 1402 | ret = 2; |
7e7d56d9 | 1403 | goto out2; |
d14ed18c | 1404 | } |
eb769f74 | 1405 | bs1 = blk_bs(blk1); |
7e7d56d9 | 1406 | bs2 = blk_bs(blk2); |
d14ed18c | 1407 | |
f1d3cd79 HR |
1408 | buf1 = blk_blockalign(blk1, IO_BUF_SIZE); |
1409 | buf2 = blk_blockalign(blk2, IO_BUF_SIZE); | |
033d9fc2 EB |
1410 | total_size1 = blk_getlength(blk1); |
1411 | if (total_size1 < 0) { | |
52bf1e72 | 1412 | error_report("Can't get size of %s: %s", |
033d9fc2 | 1413 | filename1, strerror(-total_size1)); |
52bf1e72 MA |
1414 | ret = 4; |
1415 | goto out; | |
1416 | } | |
033d9fc2 EB |
1417 | total_size2 = blk_getlength(blk2); |
1418 | if (total_size2 < 0) { | |
52bf1e72 | 1419 | error_report("Can't get size of %s: %s", |
033d9fc2 | 1420 | filename2, strerror(-total_size2)); |
52bf1e72 MA |
1421 | ret = 4; |
1422 | goto out; | |
1423 | } | |
033d9fc2 EB |
1424 | total_size = MIN(total_size1, total_size2); |
1425 | progress_base = MAX(total_size1, total_size2); | |
d14ed18c MR |
1426 | |
1427 | qemu_progress_print(0, 100); | |
1428 | ||
033d9fc2 | 1429 | if (strict && total_size1 != total_size2) { |
d14ed18c MR |
1430 | ret = 1; |
1431 | qprintf(quiet, "Strict mode: Image size mismatch!\n"); | |
1432 | goto out; | |
1433 | } | |
1434 | ||
033d9fc2 | 1435 | while (offset < total_size) { |
31826642 | 1436 | int status1, status2; |
67a0fd2a | 1437 | |
033d9fc2 EB |
1438 | status1 = bdrv_block_status_above(bs1, NULL, offset, |
1439 | total_size1 - offset, &pnum1, NULL, | |
1440 | NULL); | |
25ad8e6e | 1441 | if (status1 < 0) { |
d14ed18c MR |
1442 | ret = 3; |
1443 | error_report("Sector allocation test failed for %s", filename1); | |
1444 | goto out; | |
1445 | } | |
25ad8e6e | 1446 | allocated1 = status1 & BDRV_BLOCK_ALLOCATED; |
d14ed18c | 1447 | |
033d9fc2 EB |
1448 | status2 = bdrv_block_status_above(bs2, NULL, offset, |
1449 | total_size2 - offset, &pnum2, NULL, | |
1450 | NULL); | |
25ad8e6e | 1451 | if (status2 < 0) { |
d14ed18c MR |
1452 | ret = 3; |
1453 | error_report("Sector allocation test failed for %s", filename2); | |
1454 | goto out; | |
1455 | } | |
25ad8e6e | 1456 | allocated2 = status2 & BDRV_BLOCK_ALLOCATED; |
7daddc61 EB |
1457 | |
1458 | assert(pnum1 && pnum2); | |
033d9fc2 | 1459 | chunk = MIN(pnum1, pnum2); |
d14ed18c | 1460 | |
25ad8e6e | 1461 | if (strict) { |
31826642 | 1462 | if (status1 != status2) { |
25ad8e6e FZ |
1463 | ret = 1; |
1464 | qprintf(quiet, "Strict mode: Offset %" PRId64 | |
033d9fc2 | 1465 | " block status mismatch!\n", offset); |
25ad8e6e FZ |
1466 | goto out; |
1467 | } | |
1468 | } | |
1469 | if ((status1 & BDRV_BLOCK_ZERO) && (status2 & BDRV_BLOCK_ZERO)) { | |
7daddc61 | 1470 | /* nothing to do */ |
25ad8e6e | 1471 | } else if (allocated1 == allocated2) { |
d14ed18c | 1472 | if (allocated1) { |
dc61cd3b EB |
1473 | int64_t pnum; |
1474 | ||
033d9fc2 EB |
1475 | chunk = MIN(chunk, IO_BUF_SIZE); |
1476 | ret = blk_pread(blk1, offset, buf1, chunk); | |
d14ed18c | 1477 | if (ret < 0) { |
033d9fc2 EB |
1478 | error_report("Error while reading offset %" PRId64 |
1479 | " of %s: %s", | |
1480 | offset, filename1, strerror(-ret)); | |
d14ed18c MR |
1481 | ret = 4; |
1482 | goto out; | |
1483 | } | |
033d9fc2 | 1484 | ret = blk_pread(blk2, offset, buf2, chunk); |
d14ed18c MR |
1485 | if (ret < 0) { |
1486 | error_report("Error while reading offset %" PRId64 | |
033d9fc2 EB |
1487 | " of %s: %s", |
1488 | offset, filename2, strerror(-ret)); | |
d14ed18c MR |
1489 | ret = 4; |
1490 | goto out; | |
1491 | } | |
033d9fc2 EB |
1492 | ret = compare_buffers(buf1, buf2, chunk, &pnum); |
1493 | if (ret || pnum != chunk) { | |
d14ed18c | 1494 | qprintf(quiet, "Content mismatch at offset %" PRId64 "!\n", |
033d9fc2 | 1495 | offset + (ret ? 0 : pnum)); |
36452f12 | 1496 | ret = 1; |
d14ed18c MR |
1497 | goto out; |
1498 | } | |
1499 | } | |
1500 | } else { | |
033d9fc2 | 1501 | chunk = MIN(chunk, IO_BUF_SIZE); |
d14ed18c | 1502 | if (allocated1) { |
033d9fc2 | 1503 | ret = check_empty_sectors(blk1, offset, chunk, |
d14ed18c MR |
1504 | filename1, buf1, quiet); |
1505 | } else { | |
033d9fc2 | 1506 | ret = check_empty_sectors(blk2, offset, chunk, |
d14ed18c MR |
1507 | filename2, buf1, quiet); |
1508 | } | |
1509 | if (ret) { | |
d14ed18c MR |
1510 | goto out; |
1511 | } | |
1512 | } | |
033d9fc2 EB |
1513 | offset += chunk; |
1514 | qemu_progress_print(((float) chunk / progress_base) * 100, 100); | |
d14ed18c MR |
1515 | } |
1516 | ||
033d9fc2 | 1517 | if (total_size1 != total_size2) { |
f1d3cd79 | 1518 | BlockBackend *blk_over; |
d14ed18c MR |
1519 | const char *filename_over; |
1520 | ||
1521 | qprintf(quiet, "Warning: Image size mismatch!\n"); | |
033d9fc2 | 1522 | if (total_size1 > total_size2) { |
f1d3cd79 | 1523 | blk_over = blk1; |
d14ed18c MR |
1524 | filename_over = filename1; |
1525 | } else { | |
f1d3cd79 | 1526 | blk_over = blk2; |
d14ed18c MR |
1527 | filename_over = filename2; |
1528 | } | |
1529 | ||
033d9fc2 EB |
1530 | while (offset < progress_base) { |
1531 | ret = bdrv_block_status_above(blk_bs(blk_over), NULL, offset, | |
1532 | progress_base - offset, &chunk, | |
1533 | NULL, NULL); | |
d14ed18c MR |
1534 | if (ret < 0) { |
1535 | ret = 3; | |
1536 | error_report("Sector allocation test failed for %s", | |
1537 | filename_over); | |
1538 | goto out; | |
1539 | ||
1540 | } | |
391cb1aa | 1541 | if (ret & BDRV_BLOCK_ALLOCATED && !(ret & BDRV_BLOCK_ZERO)) { |
033d9fc2 EB |
1542 | chunk = MIN(chunk, IO_BUF_SIZE); |
1543 | ret = check_empty_sectors(blk_over, offset, chunk, | |
d14ed18c MR |
1544 | filename_over, buf1, quiet); |
1545 | if (ret) { | |
d14ed18c MR |
1546 | goto out; |
1547 | } | |
1548 | } | |
033d9fc2 EB |
1549 | offset += chunk; |
1550 | qemu_progress_print(((float) chunk / progress_base) * 100, 100); | |
d14ed18c MR |
1551 | } |
1552 | } | |
1553 | ||
1554 | qprintf(quiet, "Images are identical.\n"); | |
1555 | ret = 0; | |
1556 | ||
1557 | out: | |
d14ed18c MR |
1558 | qemu_vfree(buf1); |
1559 | qemu_vfree(buf2); | |
26f54e9a | 1560 | blk_unref(blk2); |
d14ed18c | 1561 | out2: |
26f54e9a | 1562 | blk_unref(blk1); |
d14ed18c MR |
1563 | out3: |
1564 | qemu_progress_end(); | |
3babeb15 | 1565 | out4: |
d14ed18c MR |
1566 | return ret; |
1567 | } | |
1568 | ||
690c7301 KW |
1569 | enum ImgConvertBlockStatus { |
1570 | BLK_DATA, | |
1571 | BLK_ZERO, | |
1572 | BLK_BACKING_FILE, | |
1573 | }; | |
1574 | ||
2d9187bc PL |
1575 | #define MAX_COROUTINES 16 |
1576 | ||
690c7301 KW |
1577 | typedef struct ImgConvertState { |
1578 | BlockBackend **src; | |
1579 | int64_t *src_sectors; | |
2d9187bc | 1580 | int src_num; |
690c7301 KW |
1581 | int64_t total_sectors; |
1582 | int64_t allocated_sectors; | |
2d9187bc PL |
1583 | int64_t allocated_done; |
1584 | int64_t sector_num; | |
1585 | int64_t wr_offs; | |
690c7301 KW |
1586 | enum ImgConvertBlockStatus status; |
1587 | int64_t sector_next_status; | |
1588 | BlockBackend *target; | |
1589 | bool has_zero_init; | |
1590 | bool compressed; | |
351c8eff | 1591 | bool unallocated_blocks_are_zero; |
4d7c487e | 1592 | bool target_is_new; |
690c7301 | 1593 | bool target_has_backing; |
351c8eff | 1594 | int64_t target_backing_sectors; /* negative if unknown */ |
2d9187bc | 1595 | bool wr_in_order; |
ee5306d0 | 1596 | bool copy_range; |
8eaac025 | 1597 | bool salvage; |
3d96cb91 | 1598 | bool quiet; |
690c7301 | 1599 | int min_sparse; |
8dcd3c9b | 1600 | int alignment; |
690c7301 KW |
1601 | size_t cluster_sectors; |
1602 | size_t buf_sectors; | |
9fd77f99 | 1603 | long num_coroutines; |
2d9187bc PL |
1604 | int running_coroutines; |
1605 | Coroutine *co[MAX_COROUTINES]; | |
1606 | int64_t wait_sector_num[MAX_COROUTINES]; | |
1607 | CoMutex lock; | |
1608 | int ret; | |
690c7301 KW |
1609 | } ImgConvertState; |
1610 | ||
2d9187bc PL |
1611 | static void convert_select_part(ImgConvertState *s, int64_t sector_num, |
1612 | int *src_cur, int64_t *src_cur_offset) | |
690c7301 | 1613 | { |
2d9187bc PL |
1614 | *src_cur = 0; |
1615 | *src_cur_offset = 0; | |
1616 | while (sector_num - *src_cur_offset >= s->src_sectors[*src_cur]) { | |
1617 | *src_cur_offset += s->src_sectors[*src_cur]; | |
1618 | (*src_cur)++; | |
1619 | assert(*src_cur < s->src_num); | |
690c7301 KW |
1620 | } |
1621 | } | |
1622 | ||
1623 | static int convert_iteration_sectors(ImgConvertState *s, int64_t sector_num) | |
1624 | { | |
31826642 EB |
1625 | int64_t src_cur_offset; |
1626 | int ret, n, src_cur; | |
351c8eff | 1627 | bool post_backing_zero = false; |
690c7301 | 1628 | |
2d9187bc | 1629 | convert_select_part(s, sector_num, &src_cur, &src_cur_offset); |
690c7301 KW |
1630 | |
1631 | assert(s->total_sectors > sector_num); | |
1632 | n = MIN(s->total_sectors - sector_num, BDRV_REQUEST_MAX_SECTORS); | |
1633 | ||
351c8eff HR |
1634 | if (s->target_backing_sectors >= 0) { |
1635 | if (sector_num >= s->target_backing_sectors) { | |
1636 | post_backing_zero = s->unallocated_blocks_are_zero; | |
1637 | } else if (sector_num + n > s->target_backing_sectors) { | |
1638 | /* Split requests around target_backing_sectors (because | |
1639 | * starting from there, zeros are handled differently) */ | |
1640 | n = s->target_backing_sectors - sector_num; | |
1641 | } | |
1642 | } | |
1643 | ||
690c7301 | 1644 | if (s->sector_next_status <= sector_num) { |
8eaac025 HR |
1645 | uint64_t offset = (sector_num - src_cur_offset) * BDRV_SECTOR_SIZE; |
1646 | int64_t count; | |
31826642 | 1647 | |
8eaac025 HR |
1648 | do { |
1649 | count = n * BDRV_SECTOR_SIZE; | |
1650 | ||
1651 | if (s->target_has_backing) { | |
1652 | ret = bdrv_block_status(blk_bs(s->src[src_cur]), offset, | |
1653 | count, &count, NULL, NULL); | |
1654 | } else { | |
1655 | ret = bdrv_block_status_above(blk_bs(s->src[src_cur]), NULL, | |
1656 | offset, count, &count, NULL, | |
1657 | NULL); | |
1658 | } | |
1659 | ||
1660 | if (ret < 0) { | |
1661 | if (s->salvage) { | |
1662 | if (n == 1) { | |
1663 | if (!s->quiet) { | |
1664 | warn_report("error while reading block status at " | |
1665 | "offset %" PRIu64 ": %s", offset, | |
1666 | strerror(-ret)); | |
1667 | } | |
1668 | /* Just try to read the data, then */ | |
1669 | ret = BDRV_BLOCK_DATA; | |
1670 | count = BDRV_SECTOR_SIZE; | |
1671 | } else { | |
1672 | /* Retry on a shorter range */ | |
1673 | n = DIV_ROUND_UP(n, 4); | |
1674 | } | |
1675 | } else { | |
1676 | error_report("error while reading block status at offset " | |
1677 | "%" PRIu64 ": %s", offset, strerror(-ret)); | |
1678 | return ret; | |
1679 | } | |
1680 | } | |
1681 | } while (ret < 0); | |
237d78f8 | 1682 | |
31826642 | 1683 | n = DIV_ROUND_UP(count, BDRV_SECTOR_SIZE); |
690c7301 KW |
1684 | |
1685 | if (ret & BDRV_BLOCK_ZERO) { | |
351c8eff | 1686 | s->status = post_backing_zero ? BLK_BACKING_FILE : BLK_ZERO; |
690c7301 KW |
1687 | } else if (ret & BDRV_BLOCK_DATA) { |
1688 | s->status = BLK_DATA; | |
690c7301 | 1689 | } else { |
9f1b92ad | 1690 | s->status = s->target_has_backing ? BLK_BACKING_FILE : BLK_DATA; |
690c7301 KW |
1691 | } |
1692 | ||
1693 | s->sector_next_status = sector_num + n; | |
1694 | } | |
1695 | ||
1696 | n = MIN(n, s->sector_next_status - sector_num); | |
1697 | if (s->status == BLK_DATA) { | |
1698 | n = MIN(n, s->buf_sectors); | |
1699 | } | |
1700 | ||
1701 | /* We need to write complete clusters for compressed images, so if an | |
1702 | * unallocated area is shorter than that, we must consider the whole | |
1703 | * cluster allocated. */ | |
1704 | if (s->compressed) { | |
1705 | if (n < s->cluster_sectors) { | |
1706 | n = MIN(s->cluster_sectors, s->total_sectors - sector_num); | |
1707 | s->status = BLK_DATA; | |
1708 | } else { | |
1709 | n = QEMU_ALIGN_DOWN(n, s->cluster_sectors); | |
1710 | } | |
1711 | } | |
1712 | ||
1713 | return n; | |
1714 | } | |
1715 | ||
2d9187bc PL |
1716 | static int coroutine_fn convert_co_read(ImgConvertState *s, int64_t sector_num, |
1717 | int nb_sectors, uint8_t *buf) | |
690c7301 | 1718 | { |
8eaac025 | 1719 | uint64_t single_read_until = 0; |
2d9187bc | 1720 | int n, ret; |
690c7301 | 1721 | |
690c7301 KW |
1722 | assert(nb_sectors <= s->buf_sectors); |
1723 | while (nb_sectors > 0) { | |
1724 | BlockBackend *blk; | |
2d9187bc PL |
1725 | int src_cur; |
1726 | int64_t bs_sectors, src_cur_offset; | |
8eaac025 | 1727 | uint64_t offset; |
690c7301 KW |
1728 | |
1729 | /* In the case of compression with multiple source files, we can get a | |
1730 | * nb_sectors that spreads into the next part. So we must be able to | |
1731 | * read across multiple BDSes for one convert_read() call. */ | |
2d9187bc PL |
1732 | convert_select_part(s, sector_num, &src_cur, &src_cur_offset); |
1733 | blk = s->src[src_cur]; | |
1734 | bs_sectors = s->src_sectors[src_cur]; | |
1735 | ||
8eaac025 HR |
1736 | offset = (sector_num - src_cur_offset) << BDRV_SECTOR_BITS; |
1737 | ||
2d9187bc | 1738 | n = MIN(nb_sectors, bs_sectors - (sector_num - src_cur_offset)); |
8eaac025 HR |
1739 | if (single_read_until > offset) { |
1740 | n = 1; | |
1741 | } | |
2d9187bc | 1742 | |
8eaac025 | 1743 | ret = blk_co_pread(blk, offset, n << BDRV_SECTOR_BITS, buf, 0); |
690c7301 | 1744 | if (ret < 0) { |
8eaac025 HR |
1745 | if (s->salvage) { |
1746 | if (n > 1) { | |
1747 | single_read_until = offset + (n << BDRV_SECTOR_BITS); | |
1748 | continue; | |
1749 | } else { | |
1750 | if (!s->quiet) { | |
1751 | warn_report("error while reading offset %" PRIu64 | |
1752 | ": %s", offset, strerror(-ret)); | |
1753 | } | |
1754 | memset(buf, 0, BDRV_SECTOR_SIZE); | |
1755 | } | |
1756 | } else { | |
1757 | return ret; | |
1758 | } | |
690c7301 KW |
1759 | } |
1760 | ||
1761 | sector_num += n; | |
1762 | nb_sectors -= n; | |
1763 | buf += n * BDRV_SECTOR_SIZE; | |
1764 | } | |
1765 | ||
1766 | return 0; | |
1767 | } | |
1768 | ||
2d9187bc PL |
1769 | |
1770 | static int coroutine_fn convert_co_write(ImgConvertState *s, int64_t sector_num, | |
1771 | int nb_sectors, uint8_t *buf, | |
1772 | enum ImgConvertBlockStatus status) | |
690c7301 KW |
1773 | { |
1774 | int ret; | |
1775 | ||
1776 | while (nb_sectors > 0) { | |
1777 | int n = nb_sectors; | |
db933fbe LC |
1778 | BdrvRequestFlags flags = s->compressed ? BDRV_REQ_WRITE_COMPRESSED : 0; |
1779 | ||
2d9187bc | 1780 | switch (status) { |
690c7301 KW |
1781 | case BLK_BACKING_FILE: |
1782 | /* If we have a backing file, leave clusters unallocated that are | |
1783 | * unallocated in the source image, so that the backing file is | |
1784 | * visible at the respective offset. */ | |
1785 | assert(s->target_has_backing); | |
1786 | break; | |
1787 | ||
1788 | case BLK_DATA: | |
db933fbe LC |
1789 | /* If we're told to keep the target fully allocated (-S 0) or there |
1790 | * is real non-zero data, we must write it. Otherwise we can treat | |
1791 | * it as zero sectors. | |
1792 | * Compressed clusters need to be written as a whole, so in that | |
1793 | * case we can only save the write if the buffer is completely | |
1794 | * zeroed. */ | |
690c7301 | 1795 | if (!s->min_sparse || |
db933fbe | 1796 | (!s->compressed && |
8dcd3c9b PL |
1797 | is_allocated_sectors_min(buf, n, &n, s->min_sparse, |
1798 | sector_num, s->alignment)) || | |
db933fbe LC |
1799 | (s->compressed && |
1800 | !buffer_is_zero(buf, n * BDRV_SECTOR_SIZE))) | |
690c7301 | 1801 | { |
265a7e54 VSO |
1802 | ret = blk_co_pwrite(s->target, sector_num << BDRV_SECTOR_BITS, |
1803 | n << BDRV_SECTOR_BITS, buf, flags); | |
690c7301 KW |
1804 | if (ret < 0) { |
1805 | return ret; | |
1806 | } | |
1807 | break; | |
1808 | } | |
1809 | /* fall-through */ | |
1810 | ||
1811 | case BLK_ZERO: | |
1812 | if (s->has_zero_init) { | |
db933fbe | 1813 | assert(!s->target_has_backing); |
690c7301 KW |
1814 | break; |
1815 | } | |
2d9187bc PL |
1816 | ret = blk_co_pwrite_zeroes(s->target, |
1817 | sector_num << BDRV_SECTOR_BITS, | |
a3d6ae22 NS |
1818 | n << BDRV_SECTOR_BITS, |
1819 | BDRV_REQ_MAY_UNMAP); | |
690c7301 KW |
1820 | if (ret < 0) { |
1821 | return ret; | |
1822 | } | |
1823 | break; | |
1824 | } | |
1825 | ||
1826 | sector_num += n; | |
1827 | nb_sectors -= n; | |
1828 | buf += n * BDRV_SECTOR_SIZE; | |
1829 | } | |
1830 | ||
1831 | return 0; | |
1832 | } | |
1833 | ||
ee5306d0 FZ |
1834 | static int coroutine_fn convert_co_copy_range(ImgConvertState *s, int64_t sector_num, |
1835 | int nb_sectors) | |
1836 | { | |
1837 | int n, ret; | |
1838 | ||
1839 | while (nb_sectors > 0) { | |
1840 | BlockBackend *blk; | |
1841 | int src_cur; | |
1842 | int64_t bs_sectors, src_cur_offset; | |
1843 | int64_t offset; | |
1844 | ||
1845 | convert_select_part(s, sector_num, &src_cur, &src_cur_offset); | |
1846 | offset = (sector_num - src_cur_offset) << BDRV_SECTOR_BITS; | |
1847 | blk = s->src[src_cur]; | |
1848 | bs_sectors = s->src_sectors[src_cur]; | |
1849 | ||
1850 | n = MIN(nb_sectors, bs_sectors - (sector_num - src_cur_offset)); | |
1851 | ||
1852 | ret = blk_co_copy_range(blk, offset, s->target, | |
1853 | sector_num << BDRV_SECTOR_BITS, | |
67b51fb9 | 1854 | n << BDRV_SECTOR_BITS, 0, 0); |
ee5306d0 FZ |
1855 | if (ret < 0) { |
1856 | return ret; | |
1857 | } | |
1858 | ||
1859 | sector_num += n; | |
1860 | nb_sectors -= n; | |
1861 | } | |
1862 | return 0; | |
1863 | } | |
1864 | ||
2d9187bc | 1865 | static void coroutine_fn convert_co_do_copy(void *opaque) |
690c7301 | 1866 | { |
2d9187bc | 1867 | ImgConvertState *s = opaque; |
690c7301 | 1868 | uint8_t *buf = NULL; |
2d9187bc PL |
1869 | int ret, i; |
1870 | int index = -1; | |
1871 | ||
1872 | for (i = 0; i < s->num_coroutines; i++) { | |
1873 | if (s->co[i] == qemu_coroutine_self()) { | |
1874 | index = i; | |
1875 | break; | |
1876 | } | |
1877 | } | |
1878 | assert(index >= 0); | |
1879 | ||
1880 | s->running_coroutines++; | |
1881 | buf = blk_blockalign(s->target, s->buf_sectors * BDRV_SECTOR_SIZE); | |
1882 | ||
1883 | while (1) { | |
1884 | int n; | |
1885 | int64_t sector_num; | |
1886 | enum ImgConvertBlockStatus status; | |
ee5306d0 | 1887 | bool copy_range; |
2d9187bc PL |
1888 | |
1889 | qemu_co_mutex_lock(&s->lock); | |
1890 | if (s->ret != -EINPROGRESS || s->sector_num >= s->total_sectors) { | |
1891 | qemu_co_mutex_unlock(&s->lock); | |
b91127ed | 1892 | break; |
2d9187bc PL |
1893 | } |
1894 | n = convert_iteration_sectors(s, s->sector_num); | |
1895 | if (n < 0) { | |
1896 | qemu_co_mutex_unlock(&s->lock); | |
1897 | s->ret = n; | |
b91127ed | 1898 | break; |
2d9187bc PL |
1899 | } |
1900 | /* save current sector and allocation status to local variables */ | |
1901 | sector_num = s->sector_num; | |
1902 | status = s->status; | |
1903 | if (!s->min_sparse && s->status == BLK_ZERO) { | |
1904 | n = MIN(n, s->buf_sectors); | |
1905 | } | |
1906 | /* increment global sector counter so that other coroutines can | |
1907 | * already continue reading beyond this request */ | |
1908 | s->sector_num += n; | |
1909 | qemu_co_mutex_unlock(&s->lock); | |
1910 | ||
1911 | if (status == BLK_DATA || (!s->min_sparse && status == BLK_ZERO)) { | |
1912 | s->allocated_done += n; | |
1913 | qemu_progress_print(100.0 * s->allocated_done / | |
1914 | s->allocated_sectors, 0); | |
1915 | } | |
1916 | ||
ee5306d0 FZ |
1917 | retry: |
1918 | copy_range = s->copy_range && s->status == BLK_DATA; | |
1919 | if (status == BLK_DATA && !copy_range) { | |
2d9187bc PL |
1920 | ret = convert_co_read(s, sector_num, n, buf); |
1921 | if (ret < 0) { | |
1922 | error_report("error while reading sector %" PRId64 | |
1923 | ": %s", sector_num, strerror(-ret)); | |
1924 | s->ret = ret; | |
2d9187bc PL |
1925 | } |
1926 | } else if (!s->min_sparse && status == BLK_ZERO) { | |
1927 | status = BLK_DATA; | |
1928 | memset(buf, 0x00, n * BDRV_SECTOR_SIZE); | |
1929 | } | |
1930 | ||
1931 | if (s->wr_in_order) { | |
1932 | /* keep writes in order */ | |
b91127ed | 1933 | while (s->wr_offs != sector_num && s->ret == -EINPROGRESS) { |
2d9187bc PL |
1934 | s->wait_sector_num[index] = sector_num; |
1935 | qemu_coroutine_yield(); | |
1936 | } | |
1937 | s->wait_sector_num[index] = -1; | |
1938 | } | |
1939 | ||
b91127ed | 1940 | if (s->ret == -EINPROGRESS) { |
ee5306d0 FZ |
1941 | if (copy_range) { |
1942 | ret = convert_co_copy_range(s, sector_num, n); | |
1943 | if (ret) { | |
1944 | s->copy_range = false; | |
1945 | goto retry; | |
1946 | } | |
1947 | } else { | |
1948 | ret = convert_co_write(s, sector_num, n, buf, status); | |
1949 | } | |
b91127ed AN |
1950 | if (ret < 0) { |
1951 | error_report("error while writing sector %" PRId64 | |
1952 | ": %s", sector_num, strerror(-ret)); | |
1953 | s->ret = ret; | |
1954 | } | |
2d9187bc PL |
1955 | } |
1956 | ||
1957 | if (s->wr_in_order) { | |
1958 | /* reenter the coroutine that might have waited | |
1959 | * for this write to complete */ | |
1960 | s->wr_offs = sector_num + n; | |
1961 | for (i = 0; i < s->num_coroutines; i++) { | |
1962 | if (s->co[i] && s->wait_sector_num[i] == s->wr_offs) { | |
1963 | /* | |
1964 | * A -> B -> A cannot occur because A has | |
1965 | * s->wait_sector_num[i] == -1 during A -> B. Therefore | |
1966 | * B will never enter A during this time window. | |
1967 | */ | |
1968 | qemu_coroutine_enter(s->co[i]); | |
1969 | break; | |
1970 | } | |
1971 | } | |
1972 | } | |
1973 | } | |
1974 | ||
2d9187bc PL |
1975 | qemu_vfree(buf); |
1976 | s->co[index] = NULL; | |
1977 | s->running_coroutines--; | |
1978 | if (!s->running_coroutines && s->ret == -EINPROGRESS) { | |
1979 | /* the convert job finished successfully */ | |
1980 | s->ret = 0; | |
1981 | } | |
1982 | } | |
1983 | ||
1984 | static int convert_do_copy(ImgConvertState *s) | |
1985 | { | |
1986 | int ret, i, n; | |
1987 | int64_t sector_num = 0; | |
690c7301 KW |
1988 | |
1989 | /* Check whether we have zero initialisation or can get it efficiently */ | |
168468fe DE |
1990 | if (!s->has_zero_init && s->target_is_new && s->min_sparse && |
1991 | !s->target_has_backing) { | |
4d7c487e | 1992 | s->has_zero_init = bdrv_has_zero_init(blk_bs(s->target)); |
4d7c487e | 1993 | } |
690c7301 KW |
1994 | |
1995 | if (!s->has_zero_init && !s->target_has_backing && | |
1996 | bdrv_can_write_zeroes_with_unmap(blk_bs(s->target))) | |
1997 | { | |
c9fdcf20 | 1998 | ret = blk_make_zero(s->target, BDRV_REQ_MAY_UNMAP | BDRV_REQ_NO_FALLBACK); |
690c7301 KW |
1999 | if (ret == 0) { |
2000 | s->has_zero_init = true; | |
2001 | } | |
2002 | } | |
2003 | ||
2004 | /* Allocate buffer for copied data. For compressed images, only one cluster | |
2005 | * can be copied at a time. */ | |
2006 | if (s->compressed) { | |
2007 | if (s->cluster_sectors <= 0 || s->cluster_sectors > s->buf_sectors) { | |
2008 | error_report("invalid cluster size"); | |
2d9187bc | 2009 | return -EINVAL; |
690c7301 KW |
2010 | } |
2011 | s->buf_sectors = s->cluster_sectors; | |
2012 | } | |
690c7301 | 2013 | |
690c7301 KW |
2014 | while (sector_num < s->total_sectors) { |
2015 | n = convert_iteration_sectors(s, sector_num); | |
2016 | if (n < 0) { | |
2d9187bc | 2017 | return n; |
690c7301 | 2018 | } |
aad15de4 HR |
2019 | if (s->status == BLK_DATA || (!s->min_sparse && s->status == BLK_ZERO)) |
2020 | { | |
690c7301 KW |
2021 | s->allocated_sectors += n; |
2022 | } | |
2023 | sector_num += n; | |
2024 | } | |
2025 | ||
2026 | /* Do the copy */ | |
690c7301 | 2027 | s->sector_next_status = 0; |
2d9187bc | 2028 | s->ret = -EINPROGRESS; |
690c7301 | 2029 | |
2d9187bc PL |
2030 | qemu_co_mutex_init(&s->lock); |
2031 | for (i = 0; i < s->num_coroutines; i++) { | |
2032 | s->co[i] = qemu_coroutine_create(convert_co_do_copy, s); | |
2033 | s->wait_sector_num[i] = -1; | |
2034 | qemu_coroutine_enter(s->co[i]); | |
2035 | } | |
690c7301 | 2036 | |
b91127ed | 2037 | while (s->running_coroutines) { |
2d9187bc | 2038 | main_loop_wait(false); |
690c7301 KW |
2039 | } |
2040 | ||
2d9187bc | 2041 | if (s->compressed && !s->ret) { |
690c7301 | 2042 | /* signal EOF to align */ |
fe5c1355 | 2043 | ret = blk_pwrite_compressed(s->target, 0, NULL, 0); |
690c7301 | 2044 | if (ret < 0) { |
2d9187bc | 2045 | return ret; |
690c7301 KW |
2046 | } |
2047 | } | |
2048 | ||
2d9187bc | 2049 | return s->ret; |
690c7301 KW |
2050 | } |
2051 | ||
6360ab27 PL |
2052 | #define MAX_BUF_SECTORS 32768 |
2053 | ||
ea2384d3 FB |
2054 | static int img_convert(int argc, char **argv) |
2055 | { | |
9fd77f99 | 2056 | int c, bs_i, flags, src_flags = 0; |
305b4c60 | 2057 | const char *fmt = NULL, *out_fmt = NULL, *cache = "unsafe", |
9fd77f99 PL |
2058 | *src_cache = BDRV_DEFAULT_CACHE, *out_baseimg = NULL, |
2059 | *out_filename, *out_baseimg_param, *snapshot_name = NULL; | |
305b4c60 | 2060 | BlockDriver *drv = NULL, *proto_drv = NULL; |
faea38e7 | 2061 | BlockDriverInfo bdi; |
9fd77f99 PL |
2062 | BlockDriverState *out_bs; |
2063 | QemuOpts *opts = NULL, *sn_opts = NULL; | |
83d0521a | 2064 | QemuOptsList *create_opts = NULL; |
8d65a3cc | 2065 | QDict *open_opts = NULL; |
efa84d43 | 2066 | char *options = NULL; |
cc84d90f | 2067 | Error *local_err = NULL; |
3d96cb91 | 2068 | bool writethrough, src_writethrough, image_opts = false, |
305b4c60 | 2069 | skip_create = false, progress = false, tgt_image_opts = false; |
9fd77f99 | 2070 | int64_t ret = -EINVAL; |
335e9937 | 2071 | bool force_share = false; |
e11ce12f | 2072 | bool explict_min_sparse = false; |
9fd77f99 PL |
2073 | |
2074 | ImgConvertState s = (ImgConvertState) { | |
2075 | /* Need at least 4k of zeros for sparse detection */ | |
2076 | .min_sparse = 8, | |
e11ce12f | 2077 | .copy_range = false, |
9fd77f99 PL |
2078 | .buf_sectors = IO_BUF_SIZE / BDRV_SECTOR_SIZE, |
2079 | .wr_in_order = true, | |
2080 | .num_coroutines = 8, | |
2081 | }; | |
ea2384d3 | 2082 | |
ea2384d3 | 2083 | for(;;) { |
3babeb15 DB |
2084 | static const struct option long_options[] = { |
2085 | {"help", no_argument, 0, 'h'}, | |
2086 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 2087 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
335e9937 | 2088 | {"force-share", no_argument, 0, 'U'}, |
305b4c60 | 2089 | {"target-image-opts", no_argument, 0, OPTION_TARGET_IMAGE_OPTS}, |
8eaac025 | 2090 | {"salvage", no_argument, 0, OPTION_SALVAGE}, |
168468fe | 2091 | {"target-is-zero", no_argument, 0, OPTION_TARGET_IS_ZERO}, |
3babeb15 DB |
2092 | {0, 0, 0, 0} |
2093 | }; | |
e11ce12f | 2094 | c = getopt_long(argc, argv, ":hf:O:B:Cco:l:S:pt:T:qnm:WU", |
3babeb15 | 2095 | long_options, NULL); |
b8fb60da | 2096 | if (c == -1) { |
ea2384d3 | 2097 | break; |
b8fb60da | 2098 | } |
ea2384d3 | 2099 | switch(c) { |
c9192973 SH |
2100 | case ':': |
2101 | missing_argument(argv[optind - 1]); | |
2102 | break; | |
ef87394c | 2103 | case '?': |
c9192973 SH |
2104 | unrecognized_option(argv[optind - 1]); |
2105 | break; | |
ea2384d3 FB |
2106 | case 'h': |
2107 | help(); | |
2108 | break; | |
2109 | case 'f': | |
2110 | fmt = optarg; | |
2111 | break; | |
2112 | case 'O': | |
2113 | out_fmt = optarg; | |
2114 | break; | |
f58c7b35 TS |
2115 | case 'B': |
2116 | out_baseimg = optarg; | |
2117 | break; | |
e11ce12f FZ |
2118 | case 'C': |
2119 | s.copy_range = true; | |
2120 | break; | |
ea2384d3 | 2121 | case 'c': |
9fd77f99 | 2122 | s.compressed = true; |
ea2384d3 | 2123 | break; |
efa84d43 | 2124 | case 'o': |
2dc8328b KW |
2125 | if (!is_valid_option_list(optarg)) { |
2126 | error_report("Invalid option list: %s", optarg); | |
64bb01aa | 2127 | goto fail_getopt; |
2dc8328b KW |
2128 | } |
2129 | if (!options) { | |
2130 | options = g_strdup(optarg); | |
2131 | } else { | |
2132 | char *old_options = options; | |
2133 | options = g_strdup_printf("%s,%s", options, optarg); | |
2134 | g_free(old_options); | |
2135 | } | |
efa84d43 | 2136 | break; |
ef80654d WX |
2137 | case 'l': |
2138 | if (strstart(optarg, SNAPSHOT_OPT_BASE, NULL)) { | |
70b94331 MA |
2139 | sn_opts = qemu_opts_parse_noisily(&internal_snapshot_opts, |
2140 | optarg, false); | |
ef80654d WX |
2141 | if (!sn_opts) { |
2142 | error_report("Failed in parsing snapshot param '%s'", | |
2143 | optarg); | |
64bb01aa | 2144 | goto fail_getopt; |
ef80654d WX |
2145 | } |
2146 | } else { | |
2147 | snapshot_name = optarg; | |
2148 | } | |
2149 | break; | |
a22f123c KW |
2150 | case 'S': |
2151 | { | |
2152 | int64_t sval; | |
606caa0a MA |
2153 | |
2154 | sval = cvtnum(optarg); | |
1bbbf32d | 2155 | if (sval < 0 || !QEMU_IS_ALIGNED(sval, BDRV_SECTOR_SIZE) || |
6360ab27 PL |
2156 | sval / BDRV_SECTOR_SIZE > MAX_BUF_SECTORS) { |
2157 | error_report("Invalid buffer size for sparse output specified. " | |
2158 | "Valid sizes are multiples of %llu up to %llu. Select " | |
2159 | "0 to disable sparse detection (fully allocates output).", | |
2160 | BDRV_SECTOR_SIZE, MAX_BUF_SECTORS * BDRV_SECTOR_SIZE); | |
64bb01aa | 2161 | goto fail_getopt; |
a22f123c KW |
2162 | } |
2163 | ||
9fd77f99 | 2164 | s.min_sparse = sval / BDRV_SECTOR_SIZE; |
e11ce12f | 2165 | explict_min_sparse = true; |
a22f123c KW |
2166 | break; |
2167 | } | |
6b837bc4 | 2168 | case 'p': |
9fd77f99 | 2169 | progress = true; |
6b837bc4 | 2170 | break; |
661a0f71 FS |
2171 | case 't': |
2172 | cache = optarg; | |
2173 | break; | |
40055951 HR |
2174 | case 'T': |
2175 | src_cache = optarg; | |
2176 | break; | |
f382d43a | 2177 | case 'q': |
3d96cb91 | 2178 | s.quiet = true; |
f382d43a | 2179 | break; |
b2e10493 | 2180 | case 'n': |
9fd77f99 | 2181 | skip_create = true; |
b2e10493 | 2182 | break; |
2d9187bc | 2183 | case 'm': |
9fd77f99 PL |
2184 | if (qemu_strtol(optarg, NULL, 0, &s.num_coroutines) || |
2185 | s.num_coroutines < 1 || s.num_coroutines > MAX_COROUTINES) { | |
2d9187bc PL |
2186 | error_report("Invalid number of coroutines. Allowed number of" |
2187 | " coroutines is between 1 and %d", MAX_COROUTINES); | |
2d9187bc PL |
2188 | goto fail_getopt; |
2189 | } | |
2190 | break; | |
2191 | case 'W': | |
9fd77f99 | 2192 | s.wr_in_order = false; |
2d9187bc | 2193 | break; |
335e9937 FZ |
2194 | case 'U': |
2195 | force_share = true; | |
2196 | break; | |
3258b911 HR |
2197 | case OPTION_OBJECT: { |
2198 | QemuOpts *object_opts; | |
2199 | object_opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
2200 | optarg, true); | |
2201 | if (!object_opts) { | |
3babeb15 DB |
2202 | goto fail_getopt; |
2203 | } | |
2204 | break; | |
3258b911 | 2205 | } |
eb769f74 DB |
2206 | case OPTION_IMAGE_OPTS: |
2207 | image_opts = true; | |
2208 | break; | |
8eaac025 HR |
2209 | case OPTION_SALVAGE: |
2210 | s.salvage = true; | |
2211 | break; | |
305b4c60 DB |
2212 | case OPTION_TARGET_IMAGE_OPTS: |
2213 | tgt_image_opts = true; | |
2214 | break; | |
168468fe DE |
2215 | case OPTION_TARGET_IS_ZERO: |
2216 | /* | |
2217 | * The user asserting that the target is blank has the | |
2218 | * same effect as the target driver supporting zero | |
2219 | * initialisation. | |
2220 | */ | |
2221 | s.has_zero_init = true; | |
2222 | break; | |
ea2384d3 FB |
2223 | } |
2224 | } | |
3b46e624 | 2225 | |
305b4c60 DB |
2226 | if (!out_fmt && !tgt_image_opts) { |
2227 | out_fmt = "raw"; | |
2228 | } | |
2229 | ||
3babeb15 DB |
2230 | if (qemu_opts_foreach(&qemu_object_opts, |
2231 | user_creatable_add_opts_foreach, | |
c6e5cdfd | 2232 | qemu_img_object_print_help, &error_fatal)) { |
3babeb15 DB |
2233 | goto fail_getopt; |
2234 | } | |
2235 | ||
e11ce12f FZ |
2236 | if (s.compressed && s.copy_range) { |
2237 | error_report("Cannot enable copy offloading when -c is used"); | |
2238 | goto fail_getopt; | |
2239 | } | |
2240 | ||
2241 | if (explict_min_sparse && s.copy_range) { | |
2242 | error_report("Cannot enable copy offloading when -S is used"); | |
2243 | goto fail_getopt; | |
2244 | } | |
2245 | ||
8eaac025 HR |
2246 | if (s.copy_range && s.salvage) { |
2247 | error_report("Cannot use copy offloading in salvaging mode"); | |
2248 | goto fail_getopt; | |
2249 | } | |
2250 | ||
305b4c60 DB |
2251 | if (tgt_image_opts && !skip_create) { |
2252 | error_report("--target-image-opts requires use of -n flag"); | |
2253 | goto fail_getopt; | |
2254 | } | |
2255 | ||
ffd8e8ff KW |
2256 | if (skip_create && options) { |
2257 | warn_report("-o has no effect when skipping image creation"); | |
2258 | warn_report("This will become an error in future QEMU versions."); | |
2259 | } | |
2260 | ||
168468fe DE |
2261 | if (s.has_zero_init && !skip_create) { |
2262 | error_report("--target-is-zero requires use of -n flag"); | |
2263 | goto fail_getopt; | |
2264 | } | |
2265 | ||
9fd77f99 PL |
2266 | s.src_num = argc - optind - 1; |
2267 | out_filename = s.src_num >= 1 ? argv[argc - 1] : NULL; | |
f58c7b35 | 2268 | |
2dc8328b | 2269 | if (options && has_help_option(options)) { |
305b4c60 DB |
2270 | if (out_fmt) { |
2271 | ret = print_block_option_help(out_filename, out_fmt); | |
2272 | goto fail_getopt; | |
2273 | } else { | |
2274 | error_report("Option help requires a format be specified"); | |
2275 | goto fail_getopt; | |
2276 | } | |
4ac8aacd JS |
2277 | } |
2278 | ||
9fd77f99 PL |
2279 | if (s.src_num < 1) { |
2280 | error_report("Must specify image file name"); | |
2281 | goto fail_getopt; | |
a283cb6e KW |
2282 | } |
2283 | ||
2284 | ||
9fd77f99 | 2285 | /* ret is still -EINVAL until here */ |
ce099547 | 2286 | ret = bdrv_parse_cache_mode(src_cache, &src_flags, &src_writethrough); |
40055951 HR |
2287 | if (ret < 0) { |
2288 | error_report("Invalid source cache option: %s", src_cache); | |
9fd77f99 | 2289 | goto fail_getopt; |
40055951 HR |
2290 | } |
2291 | ||
9fd77f99 | 2292 | /* Initialize before goto out */ |
3d96cb91 | 2293 | if (s.quiet) { |
9fd77f99 PL |
2294 | progress = false; |
2295 | } | |
2296 | qemu_progress_init(progress, 1.0); | |
6b837bc4 JS |
2297 | qemu_progress_print(0, 100); |
2298 | ||
9fd77f99 PL |
2299 | s.src = g_new0(BlockBackend *, s.src_num); |
2300 | s.src_sectors = g_new(int64_t, s.src_num); | |
926c2d23 | 2301 | |
9fd77f99 PL |
2302 | for (bs_i = 0; bs_i < s.src_num; bs_i++) { |
2303 | s.src[bs_i] = img_open(image_opts, argv[optind + bs_i], | |
3d96cb91 | 2304 | fmt, src_flags, src_writethrough, s.quiet, |
335e9937 | 2305 | force_share); |
9fd77f99 | 2306 | if (!s.src[bs_i]) { |
c2abccec MK |
2307 | ret = -1; |
2308 | goto out; | |
2309 | } | |
9fd77f99 PL |
2310 | s.src_sectors[bs_i] = blk_nb_sectors(s.src[bs_i]); |
2311 | if (s.src_sectors[bs_i] < 0) { | |
52bf1e72 | 2312 | error_report("Could not get size of %s: %s", |
9fd77f99 | 2313 | argv[optind + bs_i], strerror(-s.src_sectors[bs_i])); |
52bf1e72 MA |
2314 | ret = -1; |
2315 | goto out; | |
2316 | } | |
9fd77f99 | 2317 | s.total_sectors += s.src_sectors[bs_i]; |
926c2d23 | 2318 | } |
ea2384d3 | 2319 | |
ef80654d | 2320 | if (sn_opts) { |
9fd77f99 | 2321 | bdrv_snapshot_load_tmp(blk_bs(s.src[0]), |
10d6eda1 PM |
2322 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_ID), |
2323 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_NAME), | |
2324 | &local_err); | |
ef80654d | 2325 | } else if (snapshot_name != NULL) { |
9fd77f99 | 2326 | if (s.src_num > 1) { |
6daf194d | 2327 | error_report("No support for concatenating multiple snapshot"); |
51ef6727 | 2328 | ret = -1; |
2329 | goto out; | |
2330 | } | |
7b4c4781 | 2331 | |
9fd77f99 PL |
2332 | bdrv_snapshot_load_tmp_by_id_or_name(blk_bs(s.src[0]), snapshot_name, |
2333 | &local_err); | |
ef80654d | 2334 | } |
84d18f06 | 2335 | if (local_err) { |
c29b77f9 | 2336 | error_reportf_err(local_err, "Failed to load snapshot: "); |
ef80654d WX |
2337 | ret = -1; |
2338 | goto out; | |
51ef6727 | 2339 | } |
2340 | ||
305b4c60 DB |
2341 | if (!skip_create) { |
2342 | /* Find driver and parse its options */ | |
2343 | drv = bdrv_find_format(out_fmt); | |
2344 | if (!drv) { | |
2345 | error_report("Unknown file format '%s'", out_fmt); | |
2346 | ret = -1; | |
2347 | goto out; | |
2348 | } | |
efa84d43 | 2349 | |
305b4c60 DB |
2350 | proto_drv = bdrv_find_protocol(out_filename, true, &local_err); |
2351 | if (!proto_drv) { | |
2352 | error_report_err(local_err); | |
2353 | ret = -1; | |
2354 | goto out; | |
2355 | } | |
b50cbabc | 2356 | |
2e024cde HR |
2357 | if (!drv->create_opts) { |
2358 | error_report("Format driver '%s' does not support image creation", | |
2359 | drv->format_name); | |
2360 | ret = -1; | |
2361 | goto out; | |
2362 | } | |
f75613cf | 2363 | |
2e024cde HR |
2364 | if (!proto_drv->create_opts) { |
2365 | error_report("Protocol driver '%s' does not support image creation", | |
2366 | proto_drv->format_name); | |
2367 | ret = -1; | |
2368 | goto out; | |
2369 | } | |
f75613cf | 2370 | |
2e024cde HR |
2371 | create_opts = qemu_opts_append(create_opts, drv->create_opts); |
2372 | create_opts = qemu_opts_append(create_opts, proto_drv->create_opts); | |
db08adf5 | 2373 | |
2e024cde | 2374 | opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); |
dc523cd3 MA |
2375 | if (options) { |
2376 | qemu_opts_do_parse(opts, options, NULL, &local_err); | |
2377 | if (local_err) { | |
97a2ca7a | 2378 | error_report_err(local_err); |
dc523cd3 MA |
2379 | ret = -1; |
2380 | goto out; | |
2381 | } | |
2e024cde | 2382 | } |
efa84d43 | 2383 | |
9fd77f99 | 2384 | qemu_opt_set_number(opts, BLOCK_OPT_SIZE, s.total_sectors * 512, |
39101f25 | 2385 | &error_abort); |
2e024cde HR |
2386 | ret = add_old_style_options(out_fmt, opts, out_baseimg, NULL); |
2387 | if (ret < 0) { | |
2388 | goto out; | |
2389 | } | |
c2abccec | 2390 | } |
efa84d43 | 2391 | |
a18953fb | 2392 | /* Get backing file name if -o backing_file was used */ |
83d0521a | 2393 | out_baseimg_param = qemu_opt_get(opts, BLOCK_OPT_BACKING_FILE); |
a18953fb | 2394 | if (out_baseimg_param) { |
83d0521a | 2395 | out_baseimg = out_baseimg_param; |
a18953fb | 2396 | } |
9fd77f99 | 2397 | s.target_has_backing = (bool) out_baseimg; |
a18953fb | 2398 | |
168468fe DE |
2399 | if (s.has_zero_init && s.target_has_backing) { |
2400 | error_report("Cannot use --target-is-zero when the destination " | |
2401 | "image has a backing file"); | |
2402 | goto out; | |
2403 | } | |
2404 | ||
48758a84 HR |
2405 | if (s.src_num > 1 && out_baseimg) { |
2406 | error_report("Having a backing file for the target makes no sense when " | |
2407 | "concatenating multiple input images"); | |
2408 | ret = -1; | |
2409 | goto out; | |
2410 | } | |
2411 | ||
efa84d43 | 2412 | /* Check if compression is supported */ |
9fd77f99 | 2413 | if (s.compressed) { |
83d0521a CL |
2414 | bool encryption = |
2415 | qemu_opt_get_bool(opts, BLOCK_OPT_ENCRYPT, false); | |
0cb8d47b DB |
2416 | const char *encryptfmt = |
2417 | qemu_opt_get(opts, BLOCK_OPT_ENCRYPT_FORMAT); | |
83d0521a CL |
2418 | const char *preallocation = |
2419 | qemu_opt_get(opts, BLOCK_OPT_PREALLOC); | |
efa84d43 | 2420 | |
ac850bf0 | 2421 | if (drv && !block_driver_can_compress(drv)) { |
15654a6d | 2422 | error_report("Compression not supported for this file format"); |
c2abccec MK |
2423 | ret = -1; |
2424 | goto out; | |
efa84d43 KW |
2425 | } |
2426 | ||
0cb8d47b | 2427 | if (encryption || encryptfmt) { |
15654a6d JS |
2428 | error_report("Compression and encryption not supported at " |
2429 | "the same time"); | |
c2abccec MK |
2430 | ret = -1; |
2431 | goto out; | |
efa84d43 | 2432 | } |
41521fa4 | 2433 | |
83d0521a CL |
2434 | if (preallocation |
2435 | && strcmp(preallocation, "off")) | |
41521fa4 KW |
2436 | { |
2437 | error_report("Compression and preallocation not supported at " | |
2438 | "the same time"); | |
2439 | ret = -1; | |
2440 | goto out; | |
2441 | } | |
efa84d43 KW |
2442 | } |
2443 | ||
8d65a3cc DB |
2444 | /* |
2445 | * The later open call will need any decryption secrets, and | |
2446 | * bdrv_create() will purge "opts", so extract them now before | |
2447 | * they are lost. | |
2448 | */ | |
2449 | if (!skip_create) { | |
2450 | open_opts = qdict_new(); | |
2451 | qemu_opt_foreach(opts, img_add_key_secrets, open_opts, &error_abort); | |
2452 | } | |
2453 | ||
b2e10493 AD |
2454 | if (!skip_create) { |
2455 | /* Create the new image */ | |
c282e1fd | 2456 | ret = bdrv_create(drv, out_filename, opts, &local_err); |
b2e10493 | 2457 | if (ret < 0) { |
c29b77f9 MA |
2458 | error_reportf_err(local_err, "%s: error while converting %s: ", |
2459 | out_filename, out_fmt); | |
b2e10493 | 2460 | goto out; |
ea2384d3 FB |
2461 | } |
2462 | } | |
3b46e624 | 2463 | |
4d7c487e HR |
2464 | s.target_is_new = !skip_create; |
2465 | ||
9fd77f99 | 2466 | flags = s.min_sparse ? (BDRV_O_RDWR | BDRV_O_UNMAP) : BDRV_O_RDWR; |
ce099547 | 2467 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); |
661a0f71 FS |
2468 | if (ret < 0) { |
2469 | error_report("Invalid cache option: %s", cache); | |
bb9cd2ee | 2470 | goto out; |
661a0f71 FS |
2471 | } |
2472 | ||
305b4c60 DB |
2473 | if (skip_create) { |
2474 | s.target = img_open(tgt_image_opts, out_filename, out_fmt, | |
3d96cb91 | 2475 | flags, writethrough, s.quiet, false); |
305b4c60 DB |
2476 | } else { |
2477 | /* TODO ultimately we should allow --target-image-opts | |
2478 | * to be used even when -n is not given. | |
2479 | * That has to wait for bdrv_create to be improved | |
2480 | * to allow filenames in option syntax | |
2481 | */ | |
8d65a3cc | 2482 | s.target = img_open_file(out_filename, open_opts, out_fmt, |
3d96cb91 | 2483 | flags, writethrough, s.quiet, false); |
8d65a3cc | 2484 | open_opts = NULL; /* blk_new_open will have freed it */ |
305b4c60 | 2485 | } |
9fd77f99 | 2486 | if (!s.target) { |
c2abccec MK |
2487 | ret = -1; |
2488 | goto out; | |
2489 | } | |
9fd77f99 | 2490 | out_bs = blk_bs(s.target); |
ea2384d3 | 2491 | |
ac850bf0 | 2492 | if (s.compressed && !block_driver_can_compress(out_bs->drv)) { |
305b4c60 DB |
2493 | error_report("Compression not supported for this file format"); |
2494 | ret = -1; | |
2495 | goto out; | |
2496 | } | |
2497 | ||
5def6b80 | 2498 | /* increase bufsectors from the default 4096 (2M) if opt_transfer |
6360ab27 PL |
2499 | * or discard_alignment of the out_bs is greater. Limit to |
2500 | * MAX_BUF_SECTORS as maximum which is currently 32768 (16MB). */ | |
2501 | s.buf_sectors = MIN(MAX_BUF_SECTORS, | |
9fd77f99 PL |
2502 | MAX(s.buf_sectors, |
2503 | MAX(out_bs->bl.opt_transfer >> BDRV_SECTOR_BITS, | |
2504 | out_bs->bl.pdiscard_alignment >> | |
2505 | BDRV_SECTOR_BITS))); | |
f2521c90 | 2506 | |
8dcd3c9b PL |
2507 | /* try to align the write requests to the destination to avoid unnecessary |
2508 | * RMW cycles. */ | |
2509 | s.alignment = MAX(pow2floor(s.min_sparse), | |
2510 | DIV_ROUND_UP(out_bs->bl.request_alignment, | |
2511 | BDRV_SECTOR_SIZE)); | |
2512 | assert(is_power_of_2(s.alignment)); | |
2513 | ||
b2e10493 | 2514 | if (skip_create) { |
9fd77f99 | 2515 | int64_t output_sectors = blk_nb_sectors(s.target); |
43716fa8 | 2516 | if (output_sectors < 0) { |
eec5eb42 | 2517 | error_report("unable to get output image length: %s", |
43716fa8 | 2518 | strerror(-output_sectors)); |
b2e10493 AD |
2519 | ret = -1; |
2520 | goto out; | |
9fd77f99 | 2521 | } else if (output_sectors < s.total_sectors) { |
b2e10493 AD |
2522 | error_report("output file is smaller than input file"); |
2523 | ret = -1; | |
2524 | goto out; | |
2525 | } | |
2526 | } | |
2527 | ||
c69291e7 | 2528 | if (s.target_has_backing && s.target_is_new) { |
351c8eff HR |
2529 | /* Errors are treated as "backing length unknown" (which means |
2530 | * s.target_backing_sectors has to be negative, which it will | |
2531 | * be automatically). The backing file length is used only | |
2532 | * for optimizations, so such a case is not fatal. */ | |
2533 | s.target_backing_sectors = bdrv_nb_sectors(out_bs->backing->bs); | |
2534 | } else { | |
2535 | s.target_backing_sectors = -1; | |
2536 | } | |
2537 | ||
24f833cd PL |
2538 | ret = bdrv_get_info(out_bs, &bdi); |
2539 | if (ret < 0) { | |
9fd77f99 | 2540 | if (s.compressed) { |
15654a6d | 2541 | error_report("could not get block driver info"); |
c2abccec MK |
2542 | goto out; |
2543 | } | |
24f833cd | 2544 | } else { |
9fd77f99 PL |
2545 | s.compressed = s.compressed || bdi.needs_compressed_writes; |
2546 | s.cluster_sectors = bdi.cluster_size / BDRV_SECTOR_SIZE; | |
351c8eff | 2547 | s.unallocated_blocks_are_zero = bdi.unallocated_blocks_are_zero; |
9fd77f99 | 2548 | } |
802c3d4c | 2549 | |
9fd77f99 | 2550 | ret = convert_do_copy(&s); |
c2abccec | 2551 | out: |
13c28af8 PL |
2552 | if (!ret) { |
2553 | qemu_progress_print(100, 0); | |
2554 | } | |
6b837bc4 | 2555 | qemu_progress_end(); |
83d0521a CL |
2556 | qemu_opts_del(opts); |
2557 | qemu_opts_free(create_opts); | |
fbf28a43 | 2558 | qemu_opts_del(sn_opts); |
8d65a3cc | 2559 | qobject_unref(open_opts); |
9fd77f99 PL |
2560 | blk_unref(s.target); |
2561 | if (s.src) { | |
2562 | for (bs_i = 0; bs_i < s.src_num; bs_i++) { | |
2563 | blk_unref(s.src[bs_i]); | |
26f54e9a | 2564 | } |
9fd77f99 | 2565 | g_free(s.src); |
26f54e9a | 2566 | } |
9fd77f99 | 2567 | g_free(s.src_sectors); |
64bb01aa KW |
2568 | fail_getopt: |
2569 | g_free(options); | |
2570 | ||
9fd77f99 | 2571 | return !!ret; |
ea2384d3 FB |
2572 | } |
2573 | ||
57d1a2b6 | 2574 | |
faea38e7 FB |
2575 | static void dump_snapshots(BlockDriverState *bs) |
2576 | { | |
2577 | QEMUSnapshotInfo *sn_tab, *sn; | |
2578 | int nb_sns, i; | |
faea38e7 FB |
2579 | |
2580 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
2581 | if (nb_sns <= 0) | |
2582 | return; | |
2583 | printf("Snapshot list:\n"); | |
e1ce7d74 | 2584 | bdrv_snapshot_dump(NULL); |
5b917044 | 2585 | printf("\n"); |
faea38e7 FB |
2586 | for(i = 0; i < nb_sns; i++) { |
2587 | sn = &sn_tab[i]; | |
e1ce7d74 | 2588 | bdrv_snapshot_dump(sn); |
5b917044 | 2589 | printf("\n"); |
faea38e7 | 2590 | } |
7267c094 | 2591 | g_free(sn_tab); |
faea38e7 FB |
2592 | } |
2593 | ||
9699bf0d SH |
2594 | static void dump_json_image_info_list(ImageInfoList *list) |
2595 | { | |
9699bf0d | 2596 | QString *str; |
9699bf0d | 2597 | QObject *obj; |
7d5e199a | 2598 | Visitor *v = qobject_output_visitor_new(&obj); |
3b098d56 EB |
2599 | |
2600 | visit_type_ImageInfoList(v, NULL, &list, &error_abort); | |
2601 | visit_complete(v, &obj); | |
9699bf0d SH |
2602 | str = qobject_to_json_pretty(obj); |
2603 | assert(str != NULL); | |
2604 | printf("%s\n", qstring_get_str(str)); | |
cb3e7f08 | 2605 | qobject_unref(obj); |
3b098d56 | 2606 | visit_free(v); |
cb3e7f08 | 2607 | qobject_unref(str); |
9699bf0d SH |
2608 | } |
2609 | ||
c054b3fd BC |
2610 | static void dump_json_image_info(ImageInfo *info) |
2611 | { | |
c054b3fd | 2612 | QString *str; |
c054b3fd | 2613 | QObject *obj; |
7d5e199a | 2614 | Visitor *v = qobject_output_visitor_new(&obj); |
3b098d56 EB |
2615 | |
2616 | visit_type_ImageInfo(v, NULL, &info, &error_abort); | |
2617 | visit_complete(v, &obj); | |
c054b3fd BC |
2618 | str = qobject_to_json_pretty(obj); |
2619 | assert(str != NULL); | |
2620 | printf("%s\n", qstring_get_str(str)); | |
cb3e7f08 | 2621 | qobject_unref(obj); |
3b098d56 | 2622 | visit_free(v); |
cb3e7f08 | 2623 | qobject_unref(str); |
c054b3fd BC |
2624 | } |
2625 | ||
9699bf0d SH |
2626 | static void dump_human_image_info_list(ImageInfoList *list) |
2627 | { | |
2628 | ImageInfoList *elem; | |
2629 | bool delim = false; | |
2630 | ||
2631 | for (elem = list; elem; elem = elem->next) { | |
2632 | if (delim) { | |
2633 | printf("\n"); | |
2634 | } | |
2635 | delim = true; | |
2636 | ||
e1ce7d74 | 2637 | bdrv_image_info_dump(elem->value); |
9699bf0d SH |
2638 | } |
2639 | } | |
2640 | ||
2641 | static gboolean str_equal_func(gconstpointer a, gconstpointer b) | |
2642 | { | |
2643 | return strcmp(a, b) == 0; | |
2644 | } | |
2645 | ||
2646 | /** | |
2647 | * Open an image file chain and return an ImageInfoList | |
2648 | * | |
2649 | * @filename: topmost image filename | |
2650 | * @fmt: topmost image format (may be NULL to autodetect) | |
2651 | * @chain: true - enumerate entire backing file chain | |
2652 | * false - only topmost image file | |
2653 | * | |
2654 | * Returns a list of ImageInfo objects or NULL if there was an error opening an | |
2655 | * image file. If there was an error a message will have been printed to | |
2656 | * stderr. | |
2657 | */ | |
eb769f74 DB |
2658 | static ImageInfoList *collect_image_info_list(bool image_opts, |
2659 | const char *filename, | |
9699bf0d | 2660 | const char *fmt, |
335e9937 | 2661 | bool chain, bool force_share) |
9699bf0d SH |
2662 | { |
2663 | ImageInfoList *head = NULL; | |
2664 | ImageInfoList **last = &head; | |
2665 | GHashTable *filenames; | |
43526ec8 | 2666 | Error *err = NULL; |
9699bf0d SH |
2667 | |
2668 | filenames = g_hash_table_new_full(g_str_hash, str_equal_func, NULL, NULL); | |
2669 | ||
2670 | while (filename) { | |
26f54e9a | 2671 | BlockBackend *blk; |
9699bf0d SH |
2672 | BlockDriverState *bs; |
2673 | ImageInfo *info; | |
2674 | ImageInfoList *elem; | |
2675 | ||
2676 | if (g_hash_table_lookup_extended(filenames, filename, NULL, NULL)) { | |
2677 | error_report("Backing file '%s' creates an infinite loop.", | |
2678 | filename); | |
2679 | goto err; | |
2680 | } | |
2681 | g_hash_table_insert(filenames, (gpointer)filename, NULL); | |
2682 | ||
efaa7c4e | 2683 | blk = img_open(image_opts, filename, fmt, |
335e9937 FZ |
2684 | BDRV_O_NO_BACKING | BDRV_O_NO_IO, false, false, |
2685 | force_share); | |
7e7d56d9 | 2686 | if (!blk) { |
9699bf0d SH |
2687 | goto err; |
2688 | } | |
7e7d56d9 | 2689 | bs = blk_bs(blk); |
9699bf0d | 2690 | |
43526ec8 | 2691 | bdrv_query_image_info(bs, &info, &err); |
84d18f06 | 2692 | if (err) { |
565f65d2 | 2693 | error_report_err(err); |
26f54e9a | 2694 | blk_unref(blk); |
43526ec8 | 2695 | goto err; |
fb0ed453 | 2696 | } |
9699bf0d SH |
2697 | |
2698 | elem = g_new0(ImageInfoList, 1); | |
2699 | elem->value = info; | |
2700 | *last = elem; | |
2701 | last = &elem->next; | |
2702 | ||
26f54e9a | 2703 | blk_unref(blk); |
9699bf0d | 2704 | |
0da7d13a | 2705 | /* Clear parameters that only apply to the topmost image */ |
9699bf0d | 2706 | filename = fmt = NULL; |
0da7d13a SH |
2707 | image_opts = false; |
2708 | ||
9699bf0d SH |
2709 | if (chain) { |
2710 | if (info->has_full_backing_filename) { | |
2711 | filename = info->full_backing_filename; | |
2712 | } else if (info->has_backing_filename) { | |
92d617ab JS |
2713 | error_report("Could not determine absolute backing filename," |
2714 | " but backing filename '%s' present", | |
2715 | info->backing_filename); | |
2716 | goto err; | |
9699bf0d SH |
2717 | } |
2718 | if (info->has_backing_filename_format) { | |
2719 | fmt = info->backing_filename_format; | |
2720 | } | |
2721 | } | |
2722 | } | |
2723 | g_hash_table_destroy(filenames); | |
2724 | return head; | |
2725 | ||
2726 | err: | |
2727 | qapi_free_ImageInfoList(head); | |
2728 | g_hash_table_destroy(filenames); | |
2729 | return NULL; | |
2730 | } | |
2731 | ||
c054b3fd BC |
2732 | static int img_info(int argc, char **argv) |
2733 | { | |
2734 | int c; | |
2735 | OutputFormat output_format = OFORMAT_HUMAN; | |
9699bf0d | 2736 | bool chain = false; |
c054b3fd | 2737 | const char *filename, *fmt, *output; |
9699bf0d | 2738 | ImageInfoList *list; |
eb769f74 | 2739 | bool image_opts = false; |
335e9937 | 2740 | bool force_share = false; |
c054b3fd | 2741 | |
ea2384d3 | 2742 | fmt = NULL; |
c054b3fd | 2743 | output = NULL; |
ea2384d3 | 2744 | for(;;) { |
c054b3fd BC |
2745 | int option_index = 0; |
2746 | static const struct option long_options[] = { | |
2747 | {"help", no_argument, 0, 'h'}, | |
2748 | {"format", required_argument, 0, 'f'}, | |
2749 | {"output", required_argument, 0, OPTION_OUTPUT}, | |
9699bf0d | 2750 | {"backing-chain", no_argument, 0, OPTION_BACKING_CHAIN}, |
3babeb15 | 2751 | {"object", required_argument, 0, OPTION_OBJECT}, |
eb769f74 | 2752 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
335e9937 | 2753 | {"force-share", no_argument, 0, 'U'}, |
c054b3fd BC |
2754 | {0, 0, 0, 0} |
2755 | }; | |
335e9937 | 2756 | c = getopt_long(argc, argv, ":f:hU", |
c054b3fd | 2757 | long_options, &option_index); |
b8fb60da | 2758 | if (c == -1) { |
ea2384d3 | 2759 | break; |
b8fb60da | 2760 | } |
ea2384d3 | 2761 | switch(c) { |
c9192973 SH |
2762 | case ':': |
2763 | missing_argument(argv[optind - 1]); | |
2764 | break; | |
ef87394c | 2765 | case '?': |
c9192973 SH |
2766 | unrecognized_option(argv[optind - 1]); |
2767 | break; | |
ea2384d3 FB |
2768 | case 'h': |
2769 | help(); | |
2770 | break; | |
2771 | case 'f': | |
2772 | fmt = optarg; | |
2773 | break; | |
335e9937 FZ |
2774 | case 'U': |
2775 | force_share = true; | |
2776 | break; | |
c054b3fd BC |
2777 | case OPTION_OUTPUT: |
2778 | output = optarg; | |
2779 | break; | |
9699bf0d SH |
2780 | case OPTION_BACKING_CHAIN: |
2781 | chain = true; | |
2782 | break; | |
3babeb15 DB |
2783 | case OPTION_OBJECT: { |
2784 | QemuOpts *opts; | |
2785 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
2786 | optarg, true); | |
2787 | if (!opts) { | |
2788 | return 1; | |
2789 | } | |
2790 | } break; | |
eb769f74 DB |
2791 | case OPTION_IMAGE_OPTS: |
2792 | image_opts = true; | |
2793 | break; | |
ea2384d3 FB |
2794 | } |
2795 | } | |
fc11eb26 | 2796 | if (optind != argc - 1) { |
ac1307ab | 2797 | error_exit("Expecting one image file name"); |
b8fb60da | 2798 | } |
ea2384d3 FB |
2799 | filename = argv[optind++]; |
2800 | ||
c054b3fd BC |
2801 | if (output && !strcmp(output, "json")) { |
2802 | output_format = OFORMAT_JSON; | |
2803 | } else if (output && !strcmp(output, "human")) { | |
2804 | output_format = OFORMAT_HUMAN; | |
2805 | } else if (output) { | |
2806 | error_report("--output must be used with human or json as argument."); | |
c2abccec MK |
2807 | return 1; |
2808 | } | |
c054b3fd | 2809 | |
3babeb15 DB |
2810 | if (qemu_opts_foreach(&qemu_object_opts, |
2811 | user_creatable_add_opts_foreach, | |
c6e5cdfd | 2812 | qemu_img_object_print_help, &error_fatal)) { |
3babeb15 DB |
2813 | return 1; |
2814 | } | |
2815 | ||
335e9937 FZ |
2816 | list = collect_image_info_list(image_opts, filename, fmt, chain, |
2817 | force_share); | |
9699bf0d | 2818 | if (!list) { |
c2abccec | 2819 | return 1; |
faea38e7 | 2820 | } |
c054b3fd | 2821 | |
c054b3fd BC |
2822 | switch (output_format) { |
2823 | case OFORMAT_HUMAN: | |
9699bf0d | 2824 | dump_human_image_info_list(list); |
c054b3fd BC |
2825 | break; |
2826 | case OFORMAT_JSON: | |
9699bf0d SH |
2827 | if (chain) { |
2828 | dump_json_image_info_list(list); | |
2829 | } else { | |
2830 | dump_json_image_info(list->value); | |
2831 | } | |
c054b3fd | 2832 | break; |
faea38e7 | 2833 | } |
c054b3fd | 2834 | |
9699bf0d | 2835 | qapi_free_ImageInfoList(list); |
ea2384d3 FB |
2836 | return 0; |
2837 | } | |
2838 | ||
30065d14 EB |
2839 | static int dump_map_entry(OutputFormat output_format, MapEntry *e, |
2840 | MapEntry *next) | |
4c93a13b PB |
2841 | { |
2842 | switch (output_format) { | |
2843 | case OFORMAT_HUMAN: | |
16b0d555 | 2844 | if (e->data && !e->has_offset) { |
4c93a13b | 2845 | error_report("File contains external, encrypted or compressed clusters."); |
30065d14 | 2846 | return -1; |
4c93a13b | 2847 | } |
16b0d555 | 2848 | if (e->data && !e->zero) { |
4c93a13b | 2849 | printf("%#-16"PRIx64"%#-16"PRIx64"%#-16"PRIx64"%s\n", |
16b0d555 FZ |
2850 | e->start, e->length, |
2851 | e->has_offset ? e->offset : 0, | |
2852 | e->has_filename ? e->filename : ""); | |
4c93a13b PB |
2853 | } |
2854 | /* This format ignores the distinction between 0, ZERO and ZERO|DATA. | |
2855 | * Modify the flags here to allow more coalescing. | |
2856 | */ | |
16b0d555 FZ |
2857 | if (next && (!next->data || next->zero)) { |
2858 | next->data = false; | |
2859 | next->zero = true; | |
4c93a13b PB |
2860 | } |
2861 | break; | |
2862 | case OFORMAT_JSON: | |
16b0d555 FZ |
2863 | printf("%s{ \"start\": %"PRId64", \"length\": %"PRId64"," |
2864 | " \"depth\": %"PRId64", \"zero\": %s, \"data\": %s", | |
4c93a13b PB |
2865 | (e->start == 0 ? "[" : ",\n"), |
2866 | e->start, e->length, e->depth, | |
16b0d555 FZ |
2867 | e->zero ? "true" : "false", |
2868 | e->data ? "true" : "false"); | |
2869 | if (e->has_offset) { | |
c745bfb4 | 2870 | printf(", \"offset\": %"PRId64"", e->offset); |
4c93a13b PB |
2871 | } |
2872 | putchar('}'); | |
2873 | ||
2874 | if (!next) { | |
2875 | printf("]\n"); | |
2876 | } | |
2877 | break; | |
2878 | } | |
30065d14 | 2879 | return 0; |
4c93a13b PB |
2880 | } |
2881 | ||
5e344dd8 EB |
2882 | static int get_block_status(BlockDriverState *bs, int64_t offset, |
2883 | int64_t bytes, MapEntry *e) | |
4c93a13b | 2884 | { |
237d78f8 | 2885 | int ret; |
4c93a13b | 2886 | int depth; |
67a0fd2a | 2887 | BlockDriverState *file; |
2875645b | 2888 | bool has_offset; |
237d78f8 | 2889 | int64_t map; |
f30c66ba | 2890 | char *filename = NULL; |
4c93a13b PB |
2891 | |
2892 | /* As an optimization, we could cache the current range of unallocated | |
2893 | * clusters in each file of the chain, and avoid querying the same | |
2894 | * range repeatedly. | |
2895 | */ | |
2896 | ||
2897 | depth = 0; | |
2898 | for (;;) { | |
237d78f8 | 2899 | ret = bdrv_block_status(bs, offset, bytes, &bytes, &map, &file); |
4c93a13b PB |
2900 | if (ret < 0) { |
2901 | return ret; | |
2902 | } | |
237d78f8 | 2903 | assert(bytes); |
4c93a13b PB |
2904 | if (ret & (BDRV_BLOCK_ZERO|BDRV_BLOCK_DATA)) { |
2905 | break; | |
2906 | } | |
760e0063 | 2907 | bs = backing_bs(bs); |
4c93a13b PB |
2908 | if (bs == NULL) { |
2909 | ret = 0; | |
2910 | break; | |
2911 | } | |
2912 | ||
2913 | depth++; | |
2914 | } | |
2915 | ||
2875645b JS |
2916 | has_offset = !!(ret & BDRV_BLOCK_OFFSET_VALID); |
2917 | ||
f30c66ba HR |
2918 | if (file && has_offset) { |
2919 | bdrv_refresh_filename(file); | |
2920 | filename = file->filename; | |
2921 | } | |
2922 | ||
2875645b | 2923 | *e = (MapEntry) { |
5e344dd8 | 2924 | .start = offset, |
237d78f8 | 2925 | .length = bytes, |
2875645b JS |
2926 | .data = !!(ret & BDRV_BLOCK_DATA), |
2927 | .zero = !!(ret & BDRV_BLOCK_ZERO), | |
237d78f8 | 2928 | .offset = map, |
2875645b JS |
2929 | .has_offset = has_offset, |
2930 | .depth = depth, | |
f30c66ba HR |
2931 | .has_filename = filename, |
2932 | .filename = filename, | |
2875645b JS |
2933 | }; |
2934 | ||
4c93a13b PB |
2935 | return 0; |
2936 | } | |
2937 | ||
16b0d555 FZ |
2938 | static inline bool entry_mergeable(const MapEntry *curr, const MapEntry *next) |
2939 | { | |
2940 | if (curr->length == 0) { | |
2941 | return false; | |
2942 | } | |
2943 | if (curr->zero != next->zero || | |
2944 | curr->data != next->data || | |
2945 | curr->depth != next->depth || | |
2946 | curr->has_filename != next->has_filename || | |
2947 | curr->has_offset != next->has_offset) { | |
2948 | return false; | |
2949 | } | |
2950 | if (curr->has_filename && strcmp(curr->filename, next->filename)) { | |
2951 | return false; | |
2952 | } | |
2953 | if (curr->has_offset && curr->offset + curr->length != next->offset) { | |
2954 | return false; | |
2955 | } | |
2956 | return true; | |
2957 | } | |
2958 | ||
4c93a13b PB |
2959 | static int img_map(int argc, char **argv) |
2960 | { | |
2961 | int c; | |
2962 | OutputFormat output_format = OFORMAT_HUMAN; | |
26f54e9a | 2963 | BlockBackend *blk; |
4c93a13b PB |
2964 | BlockDriverState *bs; |
2965 | const char *filename, *fmt, *output; | |
2966 | int64_t length; | |
2967 | MapEntry curr = { .length = 0 }, next; | |
2968 | int ret = 0; | |
eb769f74 | 2969 | bool image_opts = false; |
335e9937 | 2970 | bool force_share = false; |
4c93a13b PB |
2971 | |
2972 | fmt = NULL; | |
2973 | output = NULL; | |
2974 | for (;;) { | |
2975 | int option_index = 0; | |
2976 | static const struct option long_options[] = { | |
2977 | {"help", no_argument, 0, 'h'}, | |
2978 | {"format", required_argument, 0, 'f'}, | |
2979 | {"output", required_argument, 0, OPTION_OUTPUT}, | |
3babeb15 | 2980 | {"object", required_argument, 0, OPTION_OBJECT}, |
eb769f74 | 2981 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
335e9937 | 2982 | {"force-share", no_argument, 0, 'U'}, |
4c93a13b PB |
2983 | {0, 0, 0, 0} |
2984 | }; | |
335e9937 | 2985 | c = getopt_long(argc, argv, ":f:hU", |
4c93a13b PB |
2986 | long_options, &option_index); |
2987 | if (c == -1) { | |
2988 | break; | |
2989 | } | |
2990 | switch (c) { | |
c9192973 SH |
2991 | case ':': |
2992 | missing_argument(argv[optind - 1]); | |
2993 | break; | |
4c93a13b | 2994 | case '?': |
c9192973 SH |
2995 | unrecognized_option(argv[optind - 1]); |
2996 | break; | |
4c93a13b PB |
2997 | case 'h': |
2998 | help(); | |
2999 | break; | |
3000 | case 'f': | |
3001 | fmt = optarg; | |
3002 | break; | |
335e9937 FZ |
3003 | case 'U': |
3004 | force_share = true; | |
3005 | break; | |
4c93a13b PB |
3006 | case OPTION_OUTPUT: |
3007 | output = optarg; | |
3008 | break; | |
3babeb15 DB |
3009 | case OPTION_OBJECT: { |
3010 | QemuOpts *opts; | |
3011 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
3012 | optarg, true); | |
3013 | if (!opts) { | |
3014 | return 1; | |
3015 | } | |
3016 | } break; | |
eb769f74 DB |
3017 | case OPTION_IMAGE_OPTS: |
3018 | image_opts = true; | |
3019 | break; | |
4c93a13b PB |
3020 | } |
3021 | } | |
ac1307ab FZ |
3022 | if (optind != argc - 1) { |
3023 | error_exit("Expecting one image file name"); | |
4c93a13b | 3024 | } |
ac1307ab | 3025 | filename = argv[optind]; |
4c93a13b PB |
3026 | |
3027 | if (output && !strcmp(output, "json")) { | |
3028 | output_format = OFORMAT_JSON; | |
3029 | } else if (output && !strcmp(output, "human")) { | |
3030 | output_format = OFORMAT_HUMAN; | |
3031 | } else if (output) { | |
3032 | error_report("--output must be used with human or json as argument."); | |
3033 | return 1; | |
3034 | } | |
3035 | ||
3babeb15 DB |
3036 | if (qemu_opts_foreach(&qemu_object_opts, |
3037 | user_creatable_add_opts_foreach, | |
c6e5cdfd | 3038 | qemu_img_object_print_help, &error_fatal)) { |
3babeb15 DB |
3039 | return 1; |
3040 | } | |
3041 | ||
335e9937 | 3042 | blk = img_open(image_opts, filename, fmt, 0, false, false, force_share); |
7e7d56d9 MA |
3043 | if (!blk) { |
3044 | return 1; | |
4c93a13b | 3045 | } |
7e7d56d9 | 3046 | bs = blk_bs(blk); |
4c93a13b PB |
3047 | |
3048 | if (output_format == OFORMAT_HUMAN) { | |
3049 | printf("%-16s%-16s%-16s%s\n", "Offset", "Length", "Mapped to", "File"); | |
3050 | } | |
3051 | ||
f1d3cd79 | 3052 | length = blk_getlength(blk); |
4c93a13b | 3053 | while (curr.start + curr.length < length) { |
5e344dd8 EB |
3054 | int64_t offset = curr.start + curr.length; |
3055 | int64_t n; | |
4c93a13b PB |
3056 | |
3057 | /* Probe up to 1 GiB at a time. */ | |
97ede57a | 3058 | n = MIN(1 * GiB, length - offset); |
5e344dd8 | 3059 | ret = get_block_status(bs, offset, n, &next); |
4c93a13b PB |
3060 | |
3061 | if (ret < 0) { | |
3062 | error_report("Could not read file metadata: %s", strerror(-ret)); | |
3063 | goto out; | |
3064 | } | |
3065 | ||
16b0d555 | 3066 | if (entry_mergeable(&curr, &next)) { |
4c93a13b PB |
3067 | curr.length += next.length; |
3068 | continue; | |
3069 | } | |
3070 | ||
3071 | if (curr.length > 0) { | |
30065d14 EB |
3072 | ret = dump_map_entry(output_format, &curr, &next); |
3073 | if (ret < 0) { | |
3074 | goto out; | |
3075 | } | |
4c93a13b PB |
3076 | } |
3077 | curr = next; | |
3078 | } | |
3079 | ||
30065d14 | 3080 | ret = dump_map_entry(output_format, &curr, NULL); |
4c93a13b PB |
3081 | |
3082 | out: | |
26f54e9a | 3083 | blk_unref(blk); |
4c93a13b PB |
3084 | return ret < 0; |
3085 | } | |
3086 | ||
f7b4a940 AL |
3087 | #define SNAPSHOT_LIST 1 |
3088 | #define SNAPSHOT_CREATE 2 | |
3089 | #define SNAPSHOT_APPLY 3 | |
3090 | #define SNAPSHOT_DELETE 4 | |
3091 | ||
153859be | 3092 | static int img_snapshot(int argc, char **argv) |
f7b4a940 | 3093 | { |
26f54e9a | 3094 | BlockBackend *blk; |
f7b4a940 AL |
3095 | BlockDriverState *bs; |
3096 | QEMUSnapshotInfo sn; | |
3097 | char *filename, *snapshot_name = NULL; | |
c2abccec | 3098 | int c, ret = 0, bdrv_oflags; |
f7b4a940 AL |
3099 | int action = 0; |
3100 | qemu_timeval tv; | |
f382d43a | 3101 | bool quiet = false; |
a89d89d3 | 3102 | Error *err = NULL; |
eb769f74 | 3103 | bool image_opts = false; |
335e9937 | 3104 | bool force_share = false; |
f7b4a940 | 3105 | |
ce099547 | 3106 | bdrv_oflags = BDRV_O_RDWR; |
f7b4a940 AL |
3107 | /* Parse commandline parameters */ |
3108 | for(;;) { | |
3babeb15 DB |
3109 | static const struct option long_options[] = { |
3110 | {"help", no_argument, 0, 'h'}, | |
3111 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 3112 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
335e9937 | 3113 | {"force-share", no_argument, 0, 'U'}, |
3babeb15 DB |
3114 | {0, 0, 0, 0} |
3115 | }; | |
335e9937 | 3116 | c = getopt_long(argc, argv, ":la:c:d:hqU", |
3babeb15 | 3117 | long_options, NULL); |
b8fb60da | 3118 | if (c == -1) { |
f7b4a940 | 3119 | break; |
b8fb60da | 3120 | } |
f7b4a940 | 3121 | switch(c) { |
c9192973 SH |
3122 | case ':': |
3123 | missing_argument(argv[optind - 1]); | |
3124 | break; | |
ef87394c | 3125 | case '?': |
c9192973 SH |
3126 | unrecognized_option(argv[optind - 1]); |
3127 | break; | |
f7b4a940 AL |
3128 | case 'h': |
3129 | help(); | |
153859be | 3130 | return 0; |
f7b4a940 AL |
3131 | case 'l': |
3132 | if (action) { | |
ac1307ab | 3133 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 3134 | return 0; |
f7b4a940 AL |
3135 | } |
3136 | action = SNAPSHOT_LIST; | |
f5edb014 | 3137 | bdrv_oflags &= ~BDRV_O_RDWR; /* no need for RW */ |
f7b4a940 AL |
3138 | break; |
3139 | case 'a': | |
3140 | if (action) { | |
ac1307ab | 3141 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 3142 | return 0; |
f7b4a940 AL |
3143 | } |
3144 | action = SNAPSHOT_APPLY; | |
3145 | snapshot_name = optarg; | |
3146 | break; | |
3147 | case 'c': | |
3148 | if (action) { | |
ac1307ab | 3149 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 3150 | return 0; |
f7b4a940 AL |
3151 | } |
3152 | action = SNAPSHOT_CREATE; | |
3153 | snapshot_name = optarg; | |
3154 | break; | |
3155 | case 'd': | |
3156 | if (action) { | |
ac1307ab | 3157 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 3158 | return 0; |
f7b4a940 AL |
3159 | } |
3160 | action = SNAPSHOT_DELETE; | |
3161 | snapshot_name = optarg; | |
3162 | break; | |
f382d43a MR |
3163 | case 'q': |
3164 | quiet = true; | |
3165 | break; | |
335e9937 FZ |
3166 | case 'U': |
3167 | force_share = true; | |
3168 | break; | |
3babeb15 DB |
3169 | case OPTION_OBJECT: { |
3170 | QemuOpts *opts; | |
3171 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
3172 | optarg, true); | |
3173 | if (!opts) { | |
3174 | return 1; | |
3175 | } | |
3176 | } break; | |
eb769f74 DB |
3177 | case OPTION_IMAGE_OPTS: |
3178 | image_opts = true; | |
3179 | break; | |
f7b4a940 AL |
3180 | } |
3181 | } | |
3182 | ||
fc11eb26 | 3183 | if (optind != argc - 1) { |
ac1307ab | 3184 | error_exit("Expecting one image file name"); |
b8fb60da | 3185 | } |
f7b4a940 AL |
3186 | filename = argv[optind++]; |
3187 | ||
3babeb15 DB |
3188 | if (qemu_opts_foreach(&qemu_object_opts, |
3189 | user_creatable_add_opts_foreach, | |
c6e5cdfd | 3190 | qemu_img_object_print_help, &error_fatal)) { |
3babeb15 DB |
3191 | return 1; |
3192 | } | |
3193 | ||
f7b4a940 | 3194 | /* Open the image */ |
335e9937 FZ |
3195 | blk = img_open(image_opts, filename, NULL, bdrv_oflags, false, quiet, |
3196 | force_share); | |
7e7d56d9 MA |
3197 | if (!blk) { |
3198 | return 1; | |
c2abccec | 3199 | } |
7e7d56d9 | 3200 | bs = blk_bs(blk); |
f7b4a940 AL |
3201 | |
3202 | /* Perform the requested action */ | |
3203 | switch(action) { | |
3204 | case SNAPSHOT_LIST: | |
3205 | dump_snapshots(bs); | |
3206 | break; | |
3207 | ||
3208 | case SNAPSHOT_CREATE: | |
3209 | memset(&sn, 0, sizeof(sn)); | |
3210 | pstrcpy(sn.name, sizeof(sn.name), snapshot_name); | |
3211 | ||
3212 | qemu_gettimeofday(&tv); | |
3213 | sn.date_sec = tv.tv_sec; | |
3214 | sn.date_nsec = tv.tv_usec * 1000; | |
3215 | ||
3216 | ret = bdrv_snapshot_create(bs, &sn); | |
b8fb60da | 3217 | if (ret) { |
15654a6d | 3218 | error_report("Could not create snapshot '%s': %d (%s)", |
f7b4a940 | 3219 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 3220 | } |
f7b4a940 AL |
3221 | break; |
3222 | ||
3223 | case SNAPSHOT_APPLY: | |
0b62bcbc | 3224 | ret = bdrv_snapshot_goto(bs, snapshot_name, &err); |
b8fb60da | 3225 | if (ret) { |
0b62bcbc KW |
3226 | error_reportf_err(err, "Could not apply snapshot '%s': ", |
3227 | snapshot_name); | |
b8fb60da | 3228 | } |
f7b4a940 AL |
3229 | break; |
3230 | ||
3231 | case SNAPSHOT_DELETE: | |
8c04093c DHB |
3232 | ret = bdrv_snapshot_find(bs, &sn, snapshot_name); |
3233 | if (ret < 0) { | |
3234 | error_report("Could not delete snapshot '%s': snapshot not " | |
3235 | "found", snapshot_name); | |
a89d89d3 | 3236 | ret = 1; |
8c04093c DHB |
3237 | } else { |
3238 | ret = bdrv_snapshot_delete(bs, sn.id_str, sn.name, &err); | |
3239 | if (ret < 0) { | |
3240 | error_reportf_err(err, "Could not delete snapshot '%s': ", | |
3241 | snapshot_name); | |
3242 | ret = 1; | |
3243 | } | |
b8fb60da | 3244 | } |
f7b4a940 AL |
3245 | break; |
3246 | } | |
3247 | ||
3248 | /* Cleanup */ | |
26f54e9a | 3249 | blk_unref(blk); |
c2abccec MK |
3250 | if (ret) { |
3251 | return 1; | |
3252 | } | |
153859be | 3253 | return 0; |
f7b4a940 AL |
3254 | } |
3255 | ||
3e85c6fd KW |
3256 | static int img_rebase(int argc, char **argv) |
3257 | { | |
26f54e9a | 3258 | BlockBackend *blk = NULL, *blk_old_backing = NULL, *blk_new_backing = NULL; |
396374ca PB |
3259 | uint8_t *buf_old = NULL; |
3260 | uint8_t *buf_new = NULL; | |
863cc78f | 3261 | BlockDriverState *bs = NULL, *prefix_chain_bs = NULL; |
3e85c6fd | 3262 | char *filename; |
40055951 HR |
3263 | const char *fmt, *cache, *src_cache, *out_basefmt, *out_baseimg; |
3264 | int c, flags, src_flags, ret; | |
ce099547 | 3265 | bool writethrough, src_writethrough; |
3e85c6fd | 3266 | int unsafe = 0; |
335e9937 | 3267 | bool force_share = false; |
6b837bc4 | 3268 | int progress = 0; |
f382d43a | 3269 | bool quiet = false; |
34b5d2c6 | 3270 | Error *local_err = NULL; |
eb769f74 | 3271 | bool image_opts = false; |
3e85c6fd KW |
3272 | |
3273 | /* Parse commandline parameters */ | |
e53dbee0 | 3274 | fmt = NULL; |
661a0f71 | 3275 | cache = BDRV_DEFAULT_CACHE; |
40055951 | 3276 | src_cache = BDRV_DEFAULT_CACHE; |
3e85c6fd KW |
3277 | out_baseimg = NULL; |
3278 | out_basefmt = NULL; | |
3e85c6fd | 3279 | for(;;) { |
3babeb15 DB |
3280 | static const struct option long_options[] = { |
3281 | {"help", no_argument, 0, 'h'}, | |
3282 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 3283 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
335e9937 | 3284 | {"force-share", no_argument, 0, 'U'}, |
3babeb15 DB |
3285 | {0, 0, 0, 0} |
3286 | }; | |
335e9937 | 3287 | c = getopt_long(argc, argv, ":hf:F:b:upt:T:qU", |
3babeb15 | 3288 | long_options, NULL); |
b8fb60da | 3289 | if (c == -1) { |
3e85c6fd | 3290 | break; |
b8fb60da | 3291 | } |
3e85c6fd | 3292 | switch(c) { |
c9192973 SH |
3293 | case ':': |
3294 | missing_argument(argv[optind - 1]); | |
3295 | break; | |
ef87394c | 3296 | case '?': |
c9192973 SH |
3297 | unrecognized_option(argv[optind - 1]); |
3298 | break; | |
3e85c6fd KW |
3299 | case 'h': |
3300 | help(); | |
3301 | return 0; | |
e53dbee0 KW |
3302 | case 'f': |
3303 | fmt = optarg; | |
3304 | break; | |
3e85c6fd KW |
3305 | case 'F': |
3306 | out_basefmt = optarg; | |
3307 | break; | |
3308 | case 'b': | |
3309 | out_baseimg = optarg; | |
3310 | break; | |
3311 | case 'u': | |
3312 | unsafe = 1; | |
3313 | break; | |
6b837bc4 JS |
3314 | case 'p': |
3315 | progress = 1; | |
3316 | break; | |
661a0f71 FS |
3317 | case 't': |
3318 | cache = optarg; | |
3319 | break; | |
40055951 HR |
3320 | case 'T': |
3321 | src_cache = optarg; | |
3322 | break; | |
f382d43a MR |
3323 | case 'q': |
3324 | quiet = true; | |
3325 | break; | |
3babeb15 DB |
3326 | case OPTION_OBJECT: { |
3327 | QemuOpts *opts; | |
3328 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
3329 | optarg, true); | |
3330 | if (!opts) { | |
3331 | return 1; | |
3332 | } | |
3333 | } break; | |
eb769f74 DB |
3334 | case OPTION_IMAGE_OPTS: |
3335 | image_opts = true; | |
3336 | break; | |
335e9937 FZ |
3337 | case 'U': |
3338 | force_share = true; | |
3339 | break; | |
3e85c6fd KW |
3340 | } |
3341 | } | |
3342 | ||
f382d43a MR |
3343 | if (quiet) { |
3344 | progress = 0; | |
3345 | } | |
3346 | ||
ac1307ab FZ |
3347 | if (optind != argc - 1) { |
3348 | error_exit("Expecting one image file name"); | |
3349 | } | |
3350 | if (!unsafe && !out_baseimg) { | |
3351 | error_exit("Must specify backing file (-b) or use unsafe mode (-u)"); | |
b8fb60da | 3352 | } |
3e85c6fd KW |
3353 | filename = argv[optind++]; |
3354 | ||
3babeb15 DB |
3355 | if (qemu_opts_foreach(&qemu_object_opts, |
3356 | user_creatable_add_opts_foreach, | |
c6e5cdfd | 3357 | qemu_img_object_print_help, &error_fatal)) { |
3babeb15 DB |
3358 | return 1; |
3359 | } | |
3360 | ||
6b837bc4 JS |
3361 | qemu_progress_init(progress, 2.0); |
3362 | qemu_progress_print(0, 100); | |
3363 | ||
661a0f71 | 3364 | flags = BDRV_O_RDWR | (unsafe ? BDRV_O_NO_BACKING : 0); |
ce099547 | 3365 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); |
661a0f71 FS |
3366 | if (ret < 0) { |
3367 | error_report("Invalid cache option: %s", cache); | |
40ed35a3 | 3368 | goto out; |
661a0f71 FS |
3369 | } |
3370 | ||
ce099547 KW |
3371 | src_flags = 0; |
3372 | ret = bdrv_parse_cache_mode(src_cache, &src_flags, &src_writethrough); | |
40055951 HR |
3373 | if (ret < 0) { |
3374 | error_report("Invalid source cache option: %s", src_cache); | |
40ed35a3 | 3375 | goto out; |
40055951 HR |
3376 | } |
3377 | ||
ce099547 KW |
3378 | /* The source files are opened read-only, don't care about WCE */ |
3379 | assert((src_flags & BDRV_O_RDWR) == 0); | |
3380 | (void) src_writethrough; | |
3381 | ||
3e85c6fd KW |
3382 | /* |
3383 | * Open the images. | |
3384 | * | |
3385 | * Ignore the old backing file for unsafe rebase in case we want to correct | |
3386 | * the reference to a renamed or moved backing file. | |
3387 | */ | |
335e9937 FZ |
3388 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet, |
3389 | false); | |
7e7d56d9 | 3390 | if (!blk) { |
40ed35a3 SH |
3391 | ret = -1; |
3392 | goto out; | |
c2abccec | 3393 | } |
7e7d56d9 | 3394 | bs = blk_bs(blk); |
3e85c6fd | 3395 | |
3e85c6fd | 3396 | if (out_basefmt != NULL) { |
644483d9 | 3397 | if (bdrv_find_format(out_basefmt) == NULL) { |
15654a6d | 3398 | error_report("Invalid format name: '%s'", out_basefmt); |
c2abccec MK |
3399 | ret = -1; |
3400 | goto out; | |
3e85c6fd KW |
3401 | } |
3402 | } | |
3403 | ||
3404 | /* For safe rebasing we need to compare old and new backing file */ | |
40ed35a3 | 3405 | if (!unsafe) { |
644483d9 | 3406 | QDict *options = NULL; |
4ebe0617 | 3407 | BlockDriverState *base_bs = backing_bs(bs); |
644483d9 | 3408 | |
4ebe0617 | 3409 | if (base_bs) { |
d861ab3a KW |
3410 | blk_old_backing = blk_new(qemu_get_aio_context(), |
3411 | BLK_PERM_CONSISTENT_READ, | |
4ebe0617 SE |
3412 | BLK_PERM_ALL); |
3413 | ret = blk_insert_bs(blk_old_backing, base_bs, | |
3414 | &local_err); | |
3415 | if (ret < 0) { | |
35ddd930 | 3416 | error_reportf_err(local_err, |
4ebe0617 SE |
3417 | "Could not reuse old backing file '%s': ", |
3418 | base_bs->filename); | |
35ddd930 HR |
3419 | goto out; |
3420 | } | |
3421 | } else { | |
3422 | blk_old_backing = NULL; | |
3e85c6fd | 3423 | } |
644483d9 | 3424 | |
a616673d | 3425 | if (out_baseimg[0]) { |
d16699b6 HR |
3426 | const char *overlay_filename; |
3427 | char *out_real_path; | |
3428 | ||
335e9937 | 3429 | options = qdict_new(); |
644483d9 | 3430 | if (out_basefmt) { |
46f5ac20 | 3431 | qdict_put_str(options, "driver", out_basefmt); |
335e9937 FZ |
3432 | } |
3433 | if (force_share) { | |
3434 | qdict_put_bool(options, BDRV_OPT_FORCE_SHARE, true); | |
644483d9 HR |
3435 | } |
3436 | ||
f30c66ba | 3437 | bdrv_refresh_filename(bs); |
d16699b6 HR |
3438 | overlay_filename = bs->exact_filename[0] ? bs->exact_filename |
3439 | : bs->filename; | |
645ae7d8 HR |
3440 | out_real_path = |
3441 | bdrv_get_full_backing_filename_from_filename(overlay_filename, | |
3442 | out_baseimg, | |
3443 | &local_err); | |
d16699b6 | 3444 | if (local_err) { |
f22356d9 | 3445 | qobject_unref(options); |
d16699b6 HR |
3446 | error_reportf_err(local_err, |
3447 | "Could not resolve backing filename: "); | |
3448 | ret = -1; | |
d16699b6 HR |
3449 | goto out; |
3450 | } | |
3451 | ||
863cc78f SE |
3452 | /* |
3453 | * Find out whether we rebase an image on top of a previous image | |
3454 | * in its chain. | |
3455 | */ | |
3456 | prefix_chain_bs = bdrv_find_backing_image(bs, out_real_path); | |
330c7295 | 3457 | if (prefix_chain_bs) { |
f22356d9 | 3458 | qobject_unref(options); |
330c7295 | 3459 | g_free(out_real_path); |
f22356d9 | 3460 | |
d861ab3a KW |
3461 | blk_new_backing = blk_new(qemu_get_aio_context(), |
3462 | BLK_PERM_CONSISTENT_READ, | |
330c7295 SE |
3463 | BLK_PERM_ALL); |
3464 | ret = blk_insert_bs(blk_new_backing, prefix_chain_bs, | |
3465 | &local_err); | |
3466 | if (ret < 0) { | |
3467 | error_reportf_err(local_err, | |
3468 | "Could not reuse backing file '%s': ", | |
3469 | out_baseimg); | |
3470 | goto out; | |
3471 | } | |
3472 | } else { | |
3473 | blk_new_backing = blk_new_open(out_real_path, NULL, | |
3474 | options, src_flags, &local_err); | |
3475 | g_free(out_real_path); | |
3476 | if (!blk_new_backing) { | |
3477 | error_reportf_err(local_err, | |
3478 | "Could not open new backing file '%s': ", | |
3479 | out_baseimg); | |
3480 | ret = -1; | |
3481 | goto out; | |
3482 | } | |
a616673d | 3483 | } |
3e85c6fd KW |
3484 | } |
3485 | } | |
3486 | ||
3487 | /* | |
3488 | * Check each unallocated cluster in the COW file. If it is unallocated, | |
3489 | * accesses go to the backing file. We must therefore compare this cluster | |
3490 | * in the old and new backing file, and if they differ we need to copy it | |
3491 | * from the old backing file into the COW file. | |
3492 | * | |
3493 | * If qemu-img crashes during this step, no harm is done. The content of | |
3494 | * the image is the same as the original one at any time. | |
3495 | */ | |
3496 | if (!unsafe) { | |
41536287 | 3497 | int64_t size; |
35ddd930 | 3498 | int64_t old_backing_size = 0; |
41536287 EB |
3499 | int64_t new_backing_size = 0; |
3500 | uint64_t offset; | |
3501 | int64_t n; | |
1f710495 | 3502 | float local_progress = 0; |
d6771bfa | 3503 | |
f1d3cd79 HR |
3504 | buf_old = blk_blockalign(blk, IO_BUF_SIZE); |
3505 | buf_new = blk_blockalign(blk, IO_BUF_SIZE); | |
3e85c6fd | 3506 | |
41536287 EB |
3507 | size = blk_getlength(blk); |
3508 | if (size < 0) { | |
52bf1e72 | 3509 | error_report("Could not get size of '%s': %s", |
41536287 | 3510 | filename, strerror(-size)); |
52bf1e72 MA |
3511 | ret = -1; |
3512 | goto out; | |
3513 | } | |
35ddd930 HR |
3514 | if (blk_old_backing) { |
3515 | old_backing_size = blk_getlength(blk_old_backing); | |
3516 | if (old_backing_size < 0) { | |
3517 | char backing_name[PATH_MAX]; | |
52bf1e72 | 3518 | |
35ddd930 HR |
3519 | bdrv_get_backing_filename(bs, backing_name, |
3520 | sizeof(backing_name)); | |
3521 | error_report("Could not get size of '%s': %s", | |
3522 | backing_name, strerror(-old_backing_size)); | |
3523 | ret = -1; | |
3524 | goto out; | |
3525 | } | |
52bf1e72 | 3526 | } |
f1d3cd79 | 3527 | if (blk_new_backing) { |
41536287 EB |
3528 | new_backing_size = blk_getlength(blk_new_backing); |
3529 | if (new_backing_size < 0) { | |
52bf1e72 | 3530 | error_report("Could not get size of '%s': %s", |
41536287 | 3531 | out_baseimg, strerror(-new_backing_size)); |
52bf1e72 MA |
3532 | ret = -1; |
3533 | goto out; | |
3534 | } | |
a616673d | 3535 | } |
3e85c6fd | 3536 | |
41536287 EB |
3537 | if (size != 0) { |
3538 | local_progress = (float)100 / (size / MIN(size, IO_BUF_SIZE)); | |
1f710495 KW |
3539 | } |
3540 | ||
41536287 | 3541 | for (offset = 0; offset < size; offset += n) { |
1c6e8779 HR |
3542 | bool buf_old_is_zero = false; |
3543 | ||
41536287 EB |
3544 | /* How many bytes can we handle with the next read? */ |
3545 | n = MIN(IO_BUF_SIZE, size - offset); | |
3e85c6fd KW |
3546 | |
3547 | /* If the cluster is allocated, we don't need to take action */ | |
41536287 | 3548 | ret = bdrv_is_allocated(bs, offset, n, &n); |
d663640c PB |
3549 | if (ret < 0) { |
3550 | error_report("error while reading image metadata: %s", | |
3551 | strerror(-ret)); | |
3552 | goto out; | |
3553 | } | |
cc60e327 | 3554 | if (ret) { |
3e85c6fd KW |
3555 | continue; |
3556 | } | |
3557 | ||
863cc78f SE |
3558 | if (prefix_chain_bs) { |
3559 | /* | |
3560 | * If cluster wasn't changed since prefix_chain, we don't need | |
3561 | * to take action | |
3562 | */ | |
3563 | ret = bdrv_is_allocated_above(backing_bs(bs), prefix_chain_bs, | |
170d3bd3 | 3564 | false, offset, n, &n); |
863cc78f SE |
3565 | if (ret < 0) { |
3566 | error_report("error while reading image metadata: %s", | |
3567 | strerror(-ret)); | |
3568 | goto out; | |
3569 | } | |
3570 | if (!ret) { | |
3571 | continue; | |
3572 | } | |
3573 | } | |
3574 | ||
87a1b3e3 KW |
3575 | /* |
3576 | * Read old and new backing file and take into consideration that | |
3577 | * backing files may be smaller than the COW image. | |
3578 | */ | |
41536287 EB |
3579 | if (offset >= old_backing_size) { |
3580 | memset(buf_old, 0, n); | |
1c6e8779 | 3581 | buf_old_is_zero = true; |
87a1b3e3 | 3582 | } else { |
41536287 EB |
3583 | if (offset + n > old_backing_size) { |
3584 | n = old_backing_size - offset; | |
87a1b3e3 KW |
3585 | } |
3586 | ||
41536287 | 3587 | ret = blk_pread(blk_old_backing, offset, buf_old, n); |
87a1b3e3 KW |
3588 | if (ret < 0) { |
3589 | error_report("error while reading from old backing file"); | |
3590 | goto out; | |
3591 | } | |
3e85c6fd | 3592 | } |
87a1b3e3 | 3593 | |
41536287 EB |
3594 | if (offset >= new_backing_size || !blk_new_backing) { |
3595 | memset(buf_new, 0, n); | |
87a1b3e3 | 3596 | } else { |
41536287 EB |
3597 | if (offset + n > new_backing_size) { |
3598 | n = new_backing_size - offset; | |
87a1b3e3 KW |
3599 | } |
3600 | ||
41536287 | 3601 | ret = blk_pread(blk_new_backing, offset, buf_new, n); |
87a1b3e3 KW |
3602 | if (ret < 0) { |
3603 | error_report("error while reading from new backing file"); | |
3604 | goto out; | |
3605 | } | |
3e85c6fd KW |
3606 | } |
3607 | ||
3608 | /* If they differ, we need to write to the COW file */ | |
3609 | uint64_t written = 0; | |
3610 | ||
41536287 | 3611 | while (written < n) { |
dc61cd3b | 3612 | int64_t pnum; |
3e85c6fd | 3613 | |
41536287 EB |
3614 | if (compare_buffers(buf_old + written, buf_new + written, |
3615 | n - written, &pnum)) | |
3e85c6fd | 3616 | { |
1c6e8779 HR |
3617 | if (buf_old_is_zero) { |
3618 | ret = blk_pwrite_zeroes(blk, offset + written, pnum, 0); | |
3619 | } else { | |
3620 | ret = blk_pwrite(blk, offset + written, | |
3621 | buf_old + written, pnum, 0); | |
3622 | } | |
3e85c6fd | 3623 | if (ret < 0) { |
15654a6d | 3624 | error_report("Error while writing to COW image: %s", |
3e85c6fd | 3625 | strerror(-ret)); |
c2abccec | 3626 | goto out; |
3e85c6fd KW |
3627 | } |
3628 | } | |
3629 | ||
3630 | written += pnum; | |
3631 | } | |
6b837bc4 | 3632 | qemu_progress_print(local_progress, 100); |
3e85c6fd KW |
3633 | } |
3634 | } | |
3635 | ||
3636 | /* | |
3637 | * Change the backing file. All clusters that are different from the old | |
3638 | * backing file are overwritten in the COW file now, so the visible content | |
3639 | * doesn't change when we switch the backing file. | |
3640 | */ | |
a616673d AB |
3641 | if (out_baseimg && *out_baseimg) { |
3642 | ret = bdrv_change_backing_file(bs, out_baseimg, out_basefmt); | |
3643 | } else { | |
3644 | ret = bdrv_change_backing_file(bs, NULL, NULL); | |
3645 | } | |
3646 | ||
3e85c6fd | 3647 | if (ret == -ENOSPC) { |
15654a6d JS |
3648 | error_report("Could not change the backing file to '%s': No " |
3649 | "space left in the file header", out_baseimg); | |
3e85c6fd | 3650 | } else if (ret < 0) { |
15654a6d | 3651 | error_report("Could not change the backing file to '%s': %s", |
3e85c6fd KW |
3652 | out_baseimg, strerror(-ret)); |
3653 | } | |
3654 | ||
6b837bc4 | 3655 | qemu_progress_print(100, 0); |
3e85c6fd KW |
3656 | /* |
3657 | * TODO At this point it is possible to check if any clusters that are | |
3658 | * allocated in the COW file are the same in the backing file. If so, they | |
3659 | * could be dropped from the COW file. Don't do this before switching the | |
3660 | * backing file, in case of a crash this would lead to corruption. | |
3661 | */ | |
c2abccec | 3662 | out: |
6b837bc4 | 3663 | qemu_progress_end(); |
3e85c6fd KW |
3664 | /* Cleanup */ |
3665 | if (!unsafe) { | |
26f54e9a | 3666 | blk_unref(blk_old_backing); |
26f54e9a | 3667 | blk_unref(blk_new_backing); |
3e85c6fd | 3668 | } |
396374ca PB |
3669 | qemu_vfree(buf_old); |
3670 | qemu_vfree(buf_new); | |
3e85c6fd | 3671 | |
26f54e9a | 3672 | blk_unref(blk); |
c2abccec MK |
3673 | if (ret) { |
3674 | return 1; | |
3675 | } | |
3e85c6fd KW |
3676 | return 0; |
3677 | } | |
3678 | ||
ae6b0ed6 SH |
3679 | static int img_resize(int argc, char **argv) |
3680 | { | |
6750e795 | 3681 | Error *err = NULL; |
ae6b0ed6 SH |
3682 | int c, ret, relative; |
3683 | const char *filename, *fmt, *size; | |
09c5c6de | 3684 | int64_t n, total_size, current_size; |
f382d43a | 3685 | bool quiet = false; |
26f54e9a | 3686 | BlockBackend *blk = NULL; |
dc5f690b | 3687 | PreallocMode prealloc = PREALLOC_MODE_OFF; |
20caf0f7 | 3688 | QemuOpts *param; |
3babeb15 | 3689 | |
20caf0f7 DXW |
3690 | static QemuOptsList resize_options = { |
3691 | .name = "resize_options", | |
3692 | .head = QTAILQ_HEAD_INITIALIZER(resize_options.head), | |
3693 | .desc = { | |
3694 | { | |
3695 | .name = BLOCK_OPT_SIZE, | |
3696 | .type = QEMU_OPT_SIZE, | |
3697 | .help = "Virtual disk size" | |
3698 | }, { | |
3699 | /* end of list */ | |
3700 | } | |
ae6b0ed6 | 3701 | }, |
ae6b0ed6 | 3702 | }; |
eb769f74 | 3703 | bool image_opts = false; |
4ffca890 | 3704 | bool shrink = false; |
ae6b0ed6 | 3705 | |
e80fec7f KW |
3706 | /* Remove size from argv manually so that negative numbers are not treated |
3707 | * as options by getopt. */ | |
3708 | if (argc < 3) { | |
ac1307ab | 3709 | error_exit("Not enough arguments"); |
e80fec7f KW |
3710 | return 1; |
3711 | } | |
3712 | ||
3713 | size = argv[--argc]; | |
3714 | ||
3715 | /* Parse getopt arguments */ | |
ae6b0ed6 SH |
3716 | fmt = NULL; |
3717 | for(;;) { | |
3babeb15 DB |
3718 | static const struct option long_options[] = { |
3719 | {"help", no_argument, 0, 'h'}, | |
3720 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 3721 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
dc5f690b | 3722 | {"preallocation", required_argument, 0, OPTION_PREALLOCATION}, |
4ffca890 | 3723 | {"shrink", no_argument, 0, OPTION_SHRINK}, |
3babeb15 DB |
3724 | {0, 0, 0, 0} |
3725 | }; | |
c9192973 | 3726 | c = getopt_long(argc, argv, ":f:hq", |
3babeb15 | 3727 | long_options, NULL); |
ae6b0ed6 SH |
3728 | if (c == -1) { |
3729 | break; | |
3730 | } | |
3731 | switch(c) { | |
c9192973 SH |
3732 | case ':': |
3733 | missing_argument(argv[optind - 1]); | |
3734 | break; | |
ef87394c | 3735 | case '?': |
c9192973 SH |
3736 | unrecognized_option(argv[optind - 1]); |
3737 | break; | |
ae6b0ed6 SH |
3738 | case 'h': |
3739 | help(); | |
3740 | break; | |
3741 | case 'f': | |
3742 | fmt = optarg; | |
3743 | break; | |
f382d43a MR |
3744 | case 'q': |
3745 | quiet = true; | |
3746 | break; | |
3babeb15 DB |
3747 | case OPTION_OBJECT: { |
3748 | QemuOpts *opts; | |
3749 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
3750 | optarg, true); | |
3751 | if (!opts) { | |
3752 | return 1; | |
3753 | } | |
3754 | } break; | |
eb769f74 DB |
3755 | case OPTION_IMAGE_OPTS: |
3756 | image_opts = true; | |
3757 | break; | |
dc5f690b | 3758 | case OPTION_PREALLOCATION: |
f7abe0ec | 3759 | prealloc = qapi_enum_parse(&PreallocMode_lookup, optarg, |
06c60b6c | 3760 | PREALLOC_MODE__MAX, NULL); |
dc5f690b HR |
3761 | if (prealloc == PREALLOC_MODE__MAX) { |
3762 | error_report("Invalid preallocation mode '%s'", optarg); | |
3763 | return 1; | |
3764 | } | |
3765 | break; | |
4ffca890 PB |
3766 | case OPTION_SHRINK: |
3767 | shrink = true; | |
3768 | break; | |
ae6b0ed6 SH |
3769 | } |
3770 | } | |
fc11eb26 | 3771 | if (optind != argc - 1) { |
be8fbd47 | 3772 | error_exit("Expecting image file name and size"); |
ae6b0ed6 SH |
3773 | } |
3774 | filename = argv[optind++]; | |
ae6b0ed6 | 3775 | |
3babeb15 DB |
3776 | if (qemu_opts_foreach(&qemu_object_opts, |
3777 | user_creatable_add_opts_foreach, | |
c6e5cdfd | 3778 | qemu_img_object_print_help, &error_fatal)) { |
3babeb15 DB |
3779 | return 1; |
3780 | } | |
3781 | ||
ae6b0ed6 SH |
3782 | /* Choose grow, shrink, or absolute resize mode */ |
3783 | switch (size[0]) { | |
3784 | case '+': | |
3785 | relative = 1; | |
3786 | size++; | |
3787 | break; | |
3788 | case '-': | |
3789 | relative = -1; | |
3790 | size++; | |
3791 | break; | |
3792 | default: | |
3793 | relative = 0; | |
3794 | break; | |
3795 | } | |
3796 | ||
3797 | /* Parse size */ | |
87ea75d5 | 3798 | param = qemu_opts_create(&resize_options, NULL, 0, &error_abort); |
f43e47db | 3799 | qemu_opt_set(param, BLOCK_OPT_SIZE, size, &err); |
6750e795 MA |
3800 | if (err) { |
3801 | error_report_err(err); | |
2a81998a | 3802 | ret = -1; |
20caf0f7 | 3803 | qemu_opts_del(param); |
2a81998a | 3804 | goto out; |
ae6b0ed6 | 3805 | } |
20caf0f7 DXW |
3806 | n = qemu_opt_get_size(param, BLOCK_OPT_SIZE, 0); |
3807 | qemu_opts_del(param); | |
ae6b0ed6 | 3808 | |
efaa7c4e | 3809 | blk = img_open(image_opts, filename, fmt, |
335e9937 FZ |
3810 | BDRV_O_RDWR | BDRV_O_RESIZE, false, quiet, |
3811 | false); | |
7e7d56d9 | 3812 | if (!blk) { |
2a81998a JS |
3813 | ret = -1; |
3814 | goto out; | |
c2abccec | 3815 | } |
ae6b0ed6 | 3816 | |
dc5f690b HR |
3817 | current_size = blk_getlength(blk); |
3818 | if (current_size < 0) { | |
3819 | error_report("Failed to inquire current image length: %s", | |
3820 | strerror(-current_size)); | |
3821 | ret = -1; | |
3822 | goto out; | |
3823 | } | |
3824 | ||
ae6b0ed6 | 3825 | if (relative) { |
dc5f690b | 3826 | total_size = current_size + n * relative; |
ae6b0ed6 SH |
3827 | } else { |
3828 | total_size = n; | |
3829 | } | |
3830 | if (total_size <= 0) { | |
15654a6d | 3831 | error_report("New image size must be positive"); |
c2abccec MK |
3832 | ret = -1; |
3833 | goto out; | |
ae6b0ed6 SH |
3834 | } |
3835 | ||
dc5f690b HR |
3836 | if (total_size <= current_size && prealloc != PREALLOC_MODE_OFF) { |
3837 | error_report("Preallocation can only be used for growing images"); | |
3838 | ret = -1; | |
3839 | goto out; | |
3840 | } | |
3841 | ||
4ffca890 PB |
3842 | if (total_size < current_size && !shrink) { |
3843 | warn_report("Shrinking an image will delete all data beyond the " | |
3844 | "shrunken image's end. Before performing such an " | |
3845 | "operation, make sure there is no important data there."); | |
3846 | ||
3847 | if (g_strcmp0(bdrv_get_format_name(blk_bs(blk)), "raw") != 0) { | |
3848 | error_report( | |
3849 | "Use the --shrink option to perform a shrink operation."); | |
3850 | ret = -1; | |
3851 | goto out; | |
3852 | } else { | |
3853 | warn_report("Using the --shrink option will suppress this message. " | |
3854 | "Note that future versions of qemu-img may refuse to " | |
3855 | "shrink images without this option."); | |
3856 | } | |
3857 | } | |
3858 | ||
e8d04f92 HR |
3859 | /* |
3860 | * The user expects the image to have the desired size after | |
3861 | * resizing, so pass @exact=true. It is of no use to report | |
3862 | * success when the image has not actually been resized. | |
3863 | */ | |
3864 | ret = blk_truncate(blk, total_size, true, prealloc, &err); | |
09c5c6de HR |
3865 | if (!ret) { |
3866 | qprintf(quiet, "Image resized.\n"); | |
3867 | } else { | |
ed3d2ec9 | 3868 | error_report_err(err); |
ae6b0ed6 | 3869 | } |
c2abccec | 3870 | out: |
26f54e9a | 3871 | blk_unref(blk); |
c2abccec MK |
3872 | if (ret) { |
3873 | return 1; | |
3874 | } | |
ae6b0ed6 SH |
3875 | return 0; |
3876 | } | |
3877 | ||
76a3a34d | 3878 | static void amend_status_cb(BlockDriverState *bs, |
8b13976d HR |
3879 | int64_t offset, int64_t total_work_size, |
3880 | void *opaque) | |
76a3a34d HR |
3881 | { |
3882 | qemu_progress_print(100.f * offset / total_work_size, 0); | |
3883 | } | |
3884 | ||
51641351 HR |
3885 | static int print_amend_option_help(const char *format) |
3886 | { | |
3887 | BlockDriver *drv; | |
3888 | ||
3889 | /* Find driver and parse its options */ | |
3890 | drv = bdrv_find_format(format); | |
3891 | if (!drv) { | |
3892 | error_report("Unknown file format '%s'", format); | |
3893 | return 1; | |
3894 | } | |
3895 | ||
3896 | if (!drv->bdrv_amend_options) { | |
3897 | error_report("Format driver '%s' does not support option amendment", | |
3898 | format); | |
3899 | return 1; | |
3900 | } | |
3901 | ||
3902 | /* Every driver supporting amendment must have create_opts */ | |
3903 | assert(drv->create_opts); | |
3904 | ||
3905 | printf("Creation options for '%s':\n", format); | |
63898712 | 3906 | qemu_opts_print_help(drv->create_opts, false); |
51641351 HR |
3907 | printf("\nNote that not all of these options may be amendable.\n"); |
3908 | return 0; | |
3909 | } | |
3910 | ||
6f176b48 HR |
3911 | static int img_amend(int argc, char **argv) |
3912 | { | |
dc523cd3 | 3913 | Error *err = NULL; |
6f176b48 HR |
3914 | int c, ret = 0; |
3915 | char *options = NULL; | |
83d0521a CL |
3916 | QemuOptsList *create_opts = NULL; |
3917 | QemuOpts *opts = NULL; | |
bd39e6ed HR |
3918 | const char *fmt = NULL, *filename, *cache; |
3919 | int flags; | |
ce099547 | 3920 | bool writethrough; |
76a3a34d | 3921 | bool quiet = false, progress = false; |
26f54e9a | 3922 | BlockBackend *blk = NULL; |
6f176b48 | 3923 | BlockDriverState *bs = NULL; |
eb769f74 | 3924 | bool image_opts = false; |
6f176b48 | 3925 | |
bd39e6ed | 3926 | cache = BDRV_DEFAULT_CACHE; |
6f176b48 | 3927 | for (;;) { |
3babeb15 DB |
3928 | static const struct option long_options[] = { |
3929 | {"help", no_argument, 0, 'h'}, | |
3930 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 3931 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
3932 | {0, 0, 0, 0} |
3933 | }; | |
c9192973 | 3934 | c = getopt_long(argc, argv, ":ho:f:t:pq", |
3babeb15 | 3935 | long_options, NULL); |
6f176b48 HR |
3936 | if (c == -1) { |
3937 | break; | |
3938 | } | |
3939 | ||
3940 | switch (c) { | |
c9192973 SH |
3941 | case ':': |
3942 | missing_argument(argv[optind - 1]); | |
3943 | break; | |
f7077624 | 3944 | case '?': |
c9192973 SH |
3945 | unrecognized_option(argv[optind - 1]); |
3946 | break; | |
3947 | case 'h': | |
f7077624 SH |
3948 | help(); |
3949 | break; | |
3950 | case 'o': | |
3951 | if (!is_valid_option_list(optarg)) { | |
3952 | error_report("Invalid option list: %s", optarg); | |
3953 | ret = -1; | |
3954 | goto out_no_progress; | |
3955 | } | |
3956 | if (!options) { | |
3957 | options = g_strdup(optarg); | |
3958 | } else { | |
3959 | char *old_options = options; | |
3960 | options = g_strdup_printf("%s,%s", options, optarg); | |
3961 | g_free(old_options); | |
3962 | } | |
3963 | break; | |
3964 | case 'f': | |
3965 | fmt = optarg; | |
3966 | break; | |
3967 | case 't': | |
3968 | cache = optarg; | |
3969 | break; | |
3970 | case 'p': | |
3971 | progress = true; | |
3972 | break; | |
3973 | case 'q': | |
3974 | quiet = true; | |
3975 | break; | |
3976 | case OPTION_OBJECT: | |
3977 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
3978 | optarg, true); | |
3979 | if (!opts) { | |
3980 | ret = -1; | |
3981 | goto out_no_progress; | |
3982 | } | |
3983 | break; | |
3984 | case OPTION_IMAGE_OPTS: | |
3985 | image_opts = true; | |
3986 | break; | |
6f176b48 HR |
3987 | } |
3988 | } | |
3989 | ||
a283cb6e | 3990 | if (!options) { |
ac1307ab | 3991 | error_exit("Must specify options (-o)"); |
6f176b48 HR |
3992 | } |
3993 | ||
3babeb15 DB |
3994 | if (qemu_opts_foreach(&qemu_object_opts, |
3995 | user_creatable_add_opts_foreach, | |
c6e5cdfd | 3996 | qemu_img_object_print_help, &error_fatal)) { |
3babeb15 DB |
3997 | ret = -1; |
3998 | goto out_no_progress; | |
3999 | } | |
4000 | ||
76a3a34d HR |
4001 | if (quiet) { |
4002 | progress = false; | |
4003 | } | |
4004 | qemu_progress_init(progress, 1.0); | |
4005 | ||
a283cb6e KW |
4006 | filename = (optind == argc - 1) ? argv[argc - 1] : NULL; |
4007 | if (fmt && has_help_option(options)) { | |
4008 | /* If a format is explicitly specified (and possibly no filename is | |
4009 | * given), print option help here */ | |
51641351 | 4010 | ret = print_amend_option_help(fmt); |
a283cb6e | 4011 | goto out; |
6f176b48 HR |
4012 | } |
4013 | ||
a283cb6e | 4014 | if (optind != argc - 1) { |
b2f27e44 HR |
4015 | error_report("Expecting one image file name"); |
4016 | ret = -1; | |
4017 | goto out; | |
a283cb6e | 4018 | } |
6f176b48 | 4019 | |
ce099547 KW |
4020 | flags = BDRV_O_RDWR; |
4021 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); | |
bd39e6ed HR |
4022 | if (ret < 0) { |
4023 | error_report("Invalid cache option: %s", cache); | |
4024 | goto out; | |
4025 | } | |
4026 | ||
335e9937 FZ |
4027 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet, |
4028 | false); | |
7e7d56d9 | 4029 | if (!blk) { |
6f176b48 HR |
4030 | ret = -1; |
4031 | goto out; | |
4032 | } | |
7e7d56d9 | 4033 | bs = blk_bs(blk); |
6f176b48 HR |
4034 | |
4035 | fmt = bs->drv->format_name; | |
4036 | ||
626f84f3 | 4037 | if (has_help_option(options)) { |
a283cb6e | 4038 | /* If the format was auto-detected, print option help here */ |
51641351 | 4039 | ret = print_amend_option_help(fmt); |
6f176b48 HR |
4040 | goto out; |
4041 | } | |
4042 | ||
1f996683 HR |
4043 | if (!bs->drv->bdrv_amend_options) { |
4044 | error_report("Format driver '%s' does not support option amendment", | |
b2439d26 HR |
4045 | fmt); |
4046 | ret = -1; | |
4047 | goto out; | |
4048 | } | |
4049 | ||
1f996683 HR |
4050 | /* Every driver supporting amendment must have create_opts */ |
4051 | assert(bs->drv->create_opts); | |
4052 | ||
c282e1fd | 4053 | create_opts = qemu_opts_append(create_opts, bs->drv->create_opts); |
83d0521a | 4054 | opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); |
ece9086e PB |
4055 | qemu_opts_do_parse(opts, options, NULL, &err); |
4056 | if (err) { | |
4057 | error_report_err(err); | |
4058 | ret = -1; | |
4059 | goto out; | |
6f176b48 HR |
4060 | } |
4061 | ||
76a3a34d HR |
4062 | /* In case the driver does not call amend_status_cb() */ |
4063 | qemu_progress_print(0.f, 0); | |
d1402b50 | 4064 | ret = bdrv_amend_options(bs, opts, &amend_status_cb, NULL, &err); |
76a3a34d | 4065 | qemu_progress_print(100.f, 0); |
6f176b48 | 4066 | if (ret < 0) { |
d1402b50 | 4067 | error_report_err(err); |
6f176b48 HR |
4068 | goto out; |
4069 | } | |
4070 | ||
4071 | out: | |
76a3a34d HR |
4072 | qemu_progress_end(); |
4073 | ||
e814dffc | 4074 | out_no_progress: |
26f54e9a | 4075 | blk_unref(blk); |
83d0521a CL |
4076 | qemu_opts_del(opts); |
4077 | qemu_opts_free(create_opts); | |
626f84f3 KW |
4078 | g_free(options); |
4079 | ||
6f176b48 HR |
4080 | if (ret) { |
4081 | return 1; | |
4082 | } | |
4083 | return 0; | |
4084 | } | |
4085 | ||
b6133b8c KW |
4086 | typedef struct BenchData { |
4087 | BlockBackend *blk; | |
4088 | uint64_t image_size; | |
b6495fa8 | 4089 | bool write; |
b6133b8c | 4090 | int bufsize; |
83de9be0 | 4091 | int step; |
b6133b8c KW |
4092 | int nrreq; |
4093 | int n; | |
55d539c8 KW |
4094 | int flush_interval; |
4095 | bool drain_on_flush; | |
b6133b8c KW |
4096 | uint8_t *buf; |
4097 | QEMUIOVector *qiov; | |
4098 | ||
4099 | int in_flight; | |
55d539c8 | 4100 | bool in_flush; |
b6133b8c KW |
4101 | uint64_t offset; |
4102 | } BenchData; | |
4103 | ||
55d539c8 KW |
4104 | static void bench_undrained_flush_cb(void *opaque, int ret) |
4105 | { | |
4106 | if (ret < 0) { | |
df3c286c | 4107 | error_report("Failed flush request: %s", strerror(-ret)); |
55d539c8 KW |
4108 | exit(EXIT_FAILURE); |
4109 | } | |
4110 | } | |
4111 | ||
b6133b8c KW |
4112 | static void bench_cb(void *opaque, int ret) |
4113 | { | |
4114 | BenchData *b = opaque; | |
4115 | BlockAIOCB *acb; | |
4116 | ||
4117 | if (ret < 0) { | |
df3c286c | 4118 | error_report("Failed request: %s", strerror(-ret)); |
b6133b8c KW |
4119 | exit(EXIT_FAILURE); |
4120 | } | |
55d539c8 KW |
4121 | |
4122 | if (b->in_flush) { | |
4123 | /* Just finished a flush with drained queue: Start next requests */ | |
4124 | assert(b->in_flight == 0); | |
4125 | b->in_flush = false; | |
4126 | } else if (b->in_flight > 0) { | |
4127 | int remaining = b->n - b->in_flight; | |
4128 | ||
b6133b8c KW |
4129 | b->n--; |
4130 | b->in_flight--; | |
55d539c8 KW |
4131 | |
4132 | /* Time for flush? Drain queue if requested, then flush */ | |
4133 | if (b->flush_interval && remaining % b->flush_interval == 0) { | |
4134 | if (!b->in_flight || !b->drain_on_flush) { | |
4135 | BlockCompletionFunc *cb; | |
4136 | ||
4137 | if (b->drain_on_flush) { | |
4138 | b->in_flush = true; | |
4139 | cb = bench_cb; | |
4140 | } else { | |
4141 | cb = bench_undrained_flush_cb; | |
4142 | } | |
4143 | ||
4144 | acb = blk_aio_flush(b->blk, cb, b); | |
4145 | if (!acb) { | |
4146 | error_report("Failed to issue flush request"); | |
4147 | exit(EXIT_FAILURE); | |
4148 | } | |
4149 | } | |
4150 | if (b->drain_on_flush) { | |
4151 | return; | |
4152 | } | |
4153 | } | |
b6133b8c KW |
4154 | } |
4155 | ||
4156 | while (b->n > b->in_flight && b->in_flight < b->nrreq) { | |
4baaa8c3 PB |
4157 | int64_t offset = b->offset; |
4158 | /* blk_aio_* might look for completed I/Os and kick bench_cb | |
4159 | * again, so make sure this operation is counted by in_flight | |
4160 | * and b->offset is ready for the next submission. | |
4161 | */ | |
4162 | b->in_flight++; | |
4163 | b->offset += b->step; | |
4164 | b->offset %= b->image_size; | |
b6495fa8 | 4165 | if (b->write) { |
4baaa8c3 | 4166 | acb = blk_aio_pwritev(b->blk, offset, b->qiov, 0, bench_cb, b); |
b6495fa8 | 4167 | } else { |
4baaa8c3 | 4168 | acb = blk_aio_preadv(b->blk, offset, b->qiov, 0, bench_cb, b); |
b6495fa8 | 4169 | } |
b6133b8c KW |
4170 | if (!acb) { |
4171 | error_report("Failed to issue request"); | |
4172 | exit(EXIT_FAILURE); | |
4173 | } | |
b6133b8c KW |
4174 | } |
4175 | } | |
4176 | ||
4177 | static int img_bench(int argc, char **argv) | |
4178 | { | |
4179 | int c, ret = 0; | |
4180 | const char *fmt = NULL, *filename; | |
4181 | bool quiet = false; | |
4182 | bool image_opts = false; | |
b6495fa8 | 4183 | bool is_write = false; |
b6133b8c KW |
4184 | int count = 75000; |
4185 | int depth = 64; | |
d3199a31 | 4186 | int64_t offset = 0; |
b6133b8c | 4187 | size_t bufsize = 4096; |
b6495fa8 | 4188 | int pattern = 0; |
83de9be0 | 4189 | size_t step = 0; |
55d539c8 KW |
4190 | int flush_interval = 0; |
4191 | bool drain_on_flush = true; | |
b6133b8c KW |
4192 | int64_t image_size; |
4193 | BlockBackend *blk = NULL; | |
4194 | BenchData data = {}; | |
4195 | int flags = 0; | |
604e8613 | 4196 | bool writethrough = false; |
b6133b8c KW |
4197 | struct timeval t1, t2; |
4198 | int i; | |
335e9937 | 4199 | bool force_share = false; |
79d46583 | 4200 | size_t buf_size; |
b6133b8c KW |
4201 | |
4202 | for (;;) { | |
4203 | static const struct option long_options[] = { | |
4204 | {"help", no_argument, 0, 'h'}, | |
55d539c8 | 4205 | {"flush-interval", required_argument, 0, OPTION_FLUSH_INTERVAL}, |
b6133b8c | 4206 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
b6495fa8 | 4207 | {"pattern", required_argument, 0, OPTION_PATTERN}, |
55d539c8 | 4208 | {"no-drain", no_argument, 0, OPTION_NO_DRAIN}, |
335e9937 | 4209 | {"force-share", no_argument, 0, 'U'}, |
b6133b8c KW |
4210 | {0, 0, 0, 0} |
4211 | }; | |
cdd26774 AM |
4212 | c = getopt_long(argc, argv, ":hc:d:f:ni:o:qs:S:t:wU", long_options, |
4213 | NULL); | |
b6133b8c KW |
4214 | if (c == -1) { |
4215 | break; | |
4216 | } | |
4217 | ||
4218 | switch (c) { | |
c9192973 SH |
4219 | case ':': |
4220 | missing_argument(argv[optind - 1]); | |
4221 | break; | |
b6133b8c | 4222 | case '?': |
c9192973 SH |
4223 | unrecognized_option(argv[optind - 1]); |
4224 | break; | |
4225 | case 'h': | |
b6133b8c KW |
4226 | help(); |
4227 | break; | |
4228 | case 'c': | |
4229 | { | |
8b3c6792 PM |
4230 | unsigned long res; |
4231 | ||
4232 | if (qemu_strtoul(optarg, NULL, 0, &res) < 0 || res > INT_MAX) { | |
b6133b8c KW |
4233 | error_report("Invalid request count specified"); |
4234 | return 1; | |
4235 | } | |
8b3c6792 | 4236 | count = res; |
b6133b8c KW |
4237 | break; |
4238 | } | |
4239 | case 'd': | |
4240 | { | |
8b3c6792 PM |
4241 | unsigned long res; |
4242 | ||
4243 | if (qemu_strtoul(optarg, NULL, 0, &res) < 0 || res > INT_MAX) { | |
b6133b8c KW |
4244 | error_report("Invalid queue depth specified"); |
4245 | return 1; | |
4246 | } | |
8b3c6792 | 4247 | depth = res; |
b6133b8c KW |
4248 | break; |
4249 | } | |
4250 | case 'f': | |
4251 | fmt = optarg; | |
4252 | break; | |
4253 | case 'n': | |
4254 | flags |= BDRV_O_NATIVE_AIO; | |
4255 | break; | |
cdd26774 AM |
4256 | case 'i': |
4257 | ret = bdrv_parse_aio(optarg, &flags); | |
4258 | if (ret < 0) { | |
4259 | error_report("Invalid aio option: %s", optarg); | |
4260 | ret = -1; | |
4261 | goto out; | |
4262 | } | |
4263 | break; | |
d3199a31 KW |
4264 | case 'o': |
4265 | { | |
606caa0a MA |
4266 | offset = cvtnum(optarg); |
4267 | if (offset < 0) { | |
d3199a31 KW |
4268 | error_report("Invalid offset specified"); |
4269 | return 1; | |
4270 | } | |
4271 | break; | |
4272 | } | |
4273 | break; | |
b6133b8c KW |
4274 | case 'q': |
4275 | quiet = true; | |
4276 | break; | |
4277 | case 's': | |
4278 | { | |
4279 | int64_t sval; | |
b6133b8c | 4280 | |
606caa0a MA |
4281 | sval = cvtnum(optarg); |
4282 | if (sval < 0 || sval > INT_MAX) { | |
b6133b8c KW |
4283 | error_report("Invalid buffer size specified"); |
4284 | return 1; | |
4285 | } | |
4286 | ||
4287 | bufsize = sval; | |
4288 | break; | |
4289 | } | |
83de9be0 KW |
4290 | case 'S': |
4291 | { | |
4292 | int64_t sval; | |
83de9be0 | 4293 | |
606caa0a MA |
4294 | sval = cvtnum(optarg); |
4295 | if (sval < 0 || sval > INT_MAX) { | |
83de9be0 KW |
4296 | error_report("Invalid step size specified"); |
4297 | return 1; | |
4298 | } | |
4299 | ||
4300 | step = sval; | |
4301 | break; | |
4302 | } | |
b6133b8c KW |
4303 | case 't': |
4304 | ret = bdrv_parse_cache_mode(optarg, &flags, &writethrough); | |
4305 | if (ret < 0) { | |
4306 | error_report("Invalid cache mode"); | |
4307 | ret = -1; | |
4308 | goto out; | |
4309 | } | |
4310 | break; | |
b6495fa8 KW |
4311 | case 'w': |
4312 | flags |= BDRV_O_RDWR; | |
4313 | is_write = true; | |
4314 | break; | |
335e9937 FZ |
4315 | case 'U': |
4316 | force_share = true; | |
4317 | break; | |
b6495fa8 KW |
4318 | case OPTION_PATTERN: |
4319 | { | |
8b3c6792 PM |
4320 | unsigned long res; |
4321 | ||
4322 | if (qemu_strtoul(optarg, NULL, 0, &res) < 0 || res > 0xff) { | |
b6495fa8 KW |
4323 | error_report("Invalid pattern byte specified"); |
4324 | return 1; | |
4325 | } | |
8b3c6792 | 4326 | pattern = res; |
b6495fa8 KW |
4327 | break; |
4328 | } | |
55d539c8 KW |
4329 | case OPTION_FLUSH_INTERVAL: |
4330 | { | |
8b3c6792 PM |
4331 | unsigned long res; |
4332 | ||
4333 | if (qemu_strtoul(optarg, NULL, 0, &res) < 0 || res > INT_MAX) { | |
55d539c8 KW |
4334 | error_report("Invalid flush interval specified"); |
4335 | return 1; | |
4336 | } | |
8b3c6792 | 4337 | flush_interval = res; |
55d539c8 KW |
4338 | break; |
4339 | } | |
4340 | case OPTION_NO_DRAIN: | |
4341 | drain_on_flush = false; | |
4342 | break; | |
b6133b8c KW |
4343 | case OPTION_IMAGE_OPTS: |
4344 | image_opts = true; | |
4345 | break; | |
4346 | } | |
4347 | } | |
4348 | ||
4349 | if (optind != argc - 1) { | |
4350 | error_exit("Expecting one image file name"); | |
4351 | } | |
4352 | filename = argv[argc - 1]; | |
4353 | ||
55d539c8 KW |
4354 | if (!is_write && flush_interval) { |
4355 | error_report("--flush-interval is only available in write tests"); | |
4356 | ret = -1; | |
4357 | goto out; | |
4358 | } | |
4359 | if (flush_interval && flush_interval < depth) { | |
4360 | error_report("Flush interval can't be smaller than depth"); | |
4361 | ret = -1; | |
4362 | goto out; | |
4363 | } | |
4364 | ||
335e9937 FZ |
4365 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet, |
4366 | force_share); | |
b6133b8c KW |
4367 | if (!blk) { |
4368 | ret = -1; | |
4369 | goto out; | |
4370 | } | |
4371 | ||
4372 | image_size = blk_getlength(blk); | |
4373 | if (image_size < 0) { | |
4374 | ret = image_size; | |
4375 | goto out; | |
4376 | } | |
4377 | ||
4378 | data = (BenchData) { | |
55d539c8 KW |
4379 | .blk = blk, |
4380 | .image_size = image_size, | |
4381 | .bufsize = bufsize, | |
4382 | .step = step ?: bufsize, | |
4383 | .nrreq = depth, | |
4384 | .n = count, | |
4385 | .offset = offset, | |
4386 | .write = is_write, | |
4387 | .flush_interval = flush_interval, | |
4388 | .drain_on_flush = drain_on_flush, | |
b6133b8c | 4389 | }; |
d3199a31 | 4390 | printf("Sending %d %s requests, %d bytes each, %d in parallel " |
83de9be0 | 4391 | "(starting at offset %" PRId64 ", step size %d)\n", |
d3199a31 | 4392 | data.n, data.write ? "write" : "read", data.bufsize, data.nrreq, |
83de9be0 | 4393 | data.offset, data.step); |
55d539c8 KW |
4394 | if (flush_interval) { |
4395 | printf("Sending flush every %d requests\n", flush_interval); | |
4396 | } | |
b6133b8c | 4397 | |
79d46583 FZ |
4398 | buf_size = data.nrreq * data.bufsize; |
4399 | data.buf = blk_blockalign(blk, buf_size); | |
b6495fa8 KW |
4400 | memset(data.buf, pattern, data.nrreq * data.bufsize); |
4401 | ||
79d46583 FZ |
4402 | blk_register_buf(blk, data.buf, buf_size); |
4403 | ||
b6133b8c KW |
4404 | data.qiov = g_new(QEMUIOVector, data.nrreq); |
4405 | for (i = 0; i < data.nrreq; i++) { | |
4406 | qemu_iovec_init(&data.qiov[i], 1); | |
4407 | qemu_iovec_add(&data.qiov[i], | |
4408 | data.buf + i * data.bufsize, data.bufsize); | |
4409 | } | |
4410 | ||
4411 | gettimeofday(&t1, NULL); | |
4412 | bench_cb(&data, 0); | |
4413 | ||
4414 | while (data.n > 0) { | |
4415 | main_loop_wait(false); | |
4416 | } | |
4417 | gettimeofday(&t2, NULL); | |
4418 | ||
4419 | printf("Run completed in %3.3f seconds.\n", | |
4420 | (t2.tv_sec - t1.tv_sec) | |
4421 | + ((double)(t2.tv_usec - t1.tv_usec) / 1000000)); | |
4422 | ||
4423 | out: | |
79d46583 FZ |
4424 | if (data.buf) { |
4425 | blk_unregister_buf(blk, data.buf); | |
4426 | } | |
b6133b8c KW |
4427 | qemu_vfree(data.buf); |
4428 | blk_unref(blk); | |
4429 | ||
4430 | if (ret) { | |
86ce1f6e RS |
4431 | return 1; |
4432 | } | |
4433 | return 0; | |
4434 | } | |
4435 | ||
4436 | #define C_BS 01 | |
4437 | #define C_COUNT 02 | |
4438 | #define C_IF 04 | |
4439 | #define C_OF 010 | |
f7c15533 | 4440 | #define C_SKIP 020 |
86ce1f6e RS |
4441 | |
4442 | struct DdInfo { | |
4443 | unsigned int flags; | |
4444 | int64_t count; | |
4445 | }; | |
4446 | ||
4447 | struct DdIo { | |
4448 | int bsz; /* Block size */ | |
4449 | char *filename; | |
4450 | uint8_t *buf; | |
f7c15533 | 4451 | int64_t offset; |
86ce1f6e RS |
4452 | }; |
4453 | ||
4454 | struct DdOpts { | |
4455 | const char *name; | |
4456 | int (*f)(const char *, struct DdIo *, struct DdIo *, struct DdInfo *); | |
4457 | unsigned int flag; | |
4458 | }; | |
4459 | ||
4460 | static int img_dd_bs(const char *arg, | |
4461 | struct DdIo *in, struct DdIo *out, | |
4462 | struct DdInfo *dd) | |
4463 | { | |
86ce1f6e RS |
4464 | int64_t res; |
4465 | ||
606caa0a | 4466 | res = cvtnum(arg); |
86ce1f6e | 4467 | |
606caa0a | 4468 | if (res <= 0 || res > INT_MAX) { |
86ce1f6e RS |
4469 | error_report("invalid number: '%s'", arg); |
4470 | return 1; | |
4471 | } | |
4472 | in->bsz = out->bsz = res; | |
4473 | ||
4474 | return 0; | |
4475 | } | |
4476 | ||
4477 | static int img_dd_count(const char *arg, | |
4478 | struct DdIo *in, struct DdIo *out, | |
4479 | struct DdInfo *dd) | |
4480 | { | |
606caa0a | 4481 | dd->count = cvtnum(arg); |
86ce1f6e | 4482 | |
606caa0a | 4483 | if (dd->count < 0) { |
86ce1f6e RS |
4484 | error_report("invalid number: '%s'", arg); |
4485 | return 1; | |
4486 | } | |
4487 | ||
4488 | return 0; | |
4489 | } | |
4490 | ||
4491 | static int img_dd_if(const char *arg, | |
4492 | struct DdIo *in, struct DdIo *out, | |
4493 | struct DdInfo *dd) | |
4494 | { | |
4495 | in->filename = g_strdup(arg); | |
4496 | ||
4497 | return 0; | |
4498 | } | |
4499 | ||
4500 | static int img_dd_of(const char *arg, | |
4501 | struct DdIo *in, struct DdIo *out, | |
4502 | struct DdInfo *dd) | |
4503 | { | |
4504 | out->filename = g_strdup(arg); | |
4505 | ||
4506 | return 0; | |
4507 | } | |
4508 | ||
f7c15533 RS |
4509 | static int img_dd_skip(const char *arg, |
4510 | struct DdIo *in, struct DdIo *out, | |
4511 | struct DdInfo *dd) | |
4512 | { | |
606caa0a | 4513 | in->offset = cvtnum(arg); |
f7c15533 | 4514 | |
606caa0a | 4515 | if (in->offset < 0) { |
f7c15533 RS |
4516 | error_report("invalid number: '%s'", arg); |
4517 | return 1; | |
4518 | } | |
4519 | ||
4520 | return 0; | |
4521 | } | |
4522 | ||
86ce1f6e RS |
4523 | static int img_dd(int argc, char **argv) |
4524 | { | |
4525 | int ret = 0; | |
4526 | char *arg = NULL; | |
4527 | char *tmp; | |
4528 | BlockDriver *drv = NULL, *proto_drv = NULL; | |
4529 | BlockBackend *blk1 = NULL, *blk2 = NULL; | |
4530 | QemuOpts *opts = NULL; | |
4531 | QemuOptsList *create_opts = NULL; | |
4532 | Error *local_err = NULL; | |
4533 | bool image_opts = false; | |
4534 | int c, i; | |
4535 | const char *out_fmt = "raw"; | |
4536 | const char *fmt = NULL; | |
4537 | int64_t size = 0; | |
4538 | int64_t block_count = 0, out_pos, in_pos; | |
335e9937 | 4539 | bool force_share = false; |
86ce1f6e RS |
4540 | struct DdInfo dd = { |
4541 | .flags = 0, | |
4542 | .count = 0, | |
4543 | }; | |
4544 | struct DdIo in = { | |
4545 | .bsz = 512, /* Block size is by default 512 bytes */ | |
4546 | .filename = NULL, | |
f7c15533 RS |
4547 | .buf = NULL, |
4548 | .offset = 0 | |
86ce1f6e RS |
4549 | }; |
4550 | struct DdIo out = { | |
4551 | .bsz = 512, | |
4552 | .filename = NULL, | |
f7c15533 RS |
4553 | .buf = NULL, |
4554 | .offset = 0 | |
86ce1f6e RS |
4555 | }; |
4556 | ||
4557 | const struct DdOpts options[] = { | |
4558 | { "bs", img_dd_bs, C_BS }, | |
4559 | { "count", img_dd_count, C_COUNT }, | |
4560 | { "if", img_dd_if, C_IF }, | |
4561 | { "of", img_dd_of, C_OF }, | |
f7c15533 | 4562 | { "skip", img_dd_skip, C_SKIP }, |
86ce1f6e RS |
4563 | { NULL, NULL, 0 } |
4564 | }; | |
4565 | const struct option long_options[] = { | |
4566 | { "help", no_argument, 0, 'h'}, | |
83d4bf94 | 4567 | { "object", required_argument, 0, OPTION_OBJECT}, |
86ce1f6e | 4568 | { "image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
335e9937 | 4569 | { "force-share", no_argument, 0, 'U'}, |
86ce1f6e RS |
4570 | { 0, 0, 0, 0 } |
4571 | }; | |
4572 | ||
335e9937 | 4573 | while ((c = getopt_long(argc, argv, ":hf:O:U", long_options, NULL))) { |
86ce1f6e RS |
4574 | if (c == EOF) { |
4575 | break; | |
4576 | } | |
4577 | switch (c) { | |
4578 | case 'O': | |
4579 | out_fmt = optarg; | |
4580 | break; | |
4581 | case 'f': | |
4582 | fmt = optarg; | |
4583 | break; | |
c9192973 SH |
4584 | case ':': |
4585 | missing_argument(argv[optind - 1]); | |
4586 | break; | |
86ce1f6e | 4587 | case '?': |
c9192973 SH |
4588 | unrecognized_option(argv[optind - 1]); |
4589 | break; | |
86ce1f6e RS |
4590 | case 'h': |
4591 | help(); | |
4592 | break; | |
335e9937 FZ |
4593 | case 'U': |
4594 | force_share = true; | |
4595 | break; | |
2a245709 SH |
4596 | case OPTION_OBJECT: |
4597 | if (!qemu_opts_parse_noisily(&qemu_object_opts, optarg, true)) { | |
83d4bf94 DB |
4598 | ret = -1; |
4599 | goto out; | |
4600 | } | |
2a245709 | 4601 | break; |
86ce1f6e RS |
4602 | case OPTION_IMAGE_OPTS: |
4603 | image_opts = true; | |
4604 | break; | |
4605 | } | |
4606 | } | |
4607 | ||
4608 | for (i = optind; i < argc; i++) { | |
4609 | int j; | |
4610 | arg = g_strdup(argv[i]); | |
4611 | ||
4612 | tmp = strchr(arg, '='); | |
4613 | if (tmp == NULL) { | |
4614 | error_report("unrecognized operand %s", arg); | |
4615 | ret = -1; | |
4616 | goto out; | |
4617 | } | |
4618 | ||
4619 | *tmp++ = '\0'; | |
4620 | ||
4621 | for (j = 0; options[j].name != NULL; j++) { | |
4622 | if (!strcmp(arg, options[j].name)) { | |
4623 | break; | |
4624 | } | |
4625 | } | |
4626 | if (options[j].name == NULL) { | |
4627 | error_report("unrecognized operand %s", arg); | |
4628 | ret = -1; | |
4629 | goto out; | |
4630 | } | |
4631 | ||
4632 | if (options[j].f(tmp, &in, &out, &dd) != 0) { | |
4633 | ret = -1; | |
4634 | goto out; | |
4635 | } | |
4636 | dd.flags |= options[j].flag; | |
4637 | g_free(arg); | |
4638 | arg = NULL; | |
4639 | } | |
4640 | ||
4641 | if (!(dd.flags & C_IF && dd.flags & C_OF)) { | |
4642 | error_report("Must specify both input and output files"); | |
4643 | ret = -1; | |
4644 | goto out; | |
4645 | } | |
83d4bf94 DB |
4646 | |
4647 | if (qemu_opts_foreach(&qemu_object_opts, | |
4648 | user_creatable_add_opts_foreach, | |
c6e5cdfd | 4649 | qemu_img_object_print_help, &error_fatal)) { |
83d4bf94 DB |
4650 | ret = -1; |
4651 | goto out; | |
4652 | } | |
4653 | ||
335e9937 FZ |
4654 | blk1 = img_open(image_opts, in.filename, fmt, 0, false, false, |
4655 | force_share); | |
86ce1f6e RS |
4656 | |
4657 | if (!blk1) { | |
4658 | ret = -1; | |
4659 | goto out; | |
4660 | } | |
4661 | ||
4662 | drv = bdrv_find_format(out_fmt); | |
4663 | if (!drv) { | |
4664 | error_report("Unknown file format"); | |
4665 | ret = -1; | |
4666 | goto out; | |
4667 | } | |
4668 | proto_drv = bdrv_find_protocol(out.filename, true, &local_err); | |
4669 | ||
4670 | if (!proto_drv) { | |
4671 | error_report_err(local_err); | |
4672 | ret = -1; | |
4673 | goto out; | |
4674 | } | |
4675 | if (!drv->create_opts) { | |
4676 | error_report("Format driver '%s' does not support image creation", | |
4677 | drv->format_name); | |
4678 | ret = -1; | |
4679 | goto out; | |
4680 | } | |
4681 | if (!proto_drv->create_opts) { | |
4682 | error_report("Protocol driver '%s' does not support image creation", | |
4683 | proto_drv->format_name); | |
4684 | ret = -1; | |
4685 | goto out; | |
4686 | } | |
4687 | create_opts = qemu_opts_append(create_opts, drv->create_opts); | |
4688 | create_opts = qemu_opts_append(create_opts, proto_drv->create_opts); | |
4689 | ||
4690 | opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); | |
4691 | ||
4692 | size = blk_getlength(blk1); | |
4693 | if (size < 0) { | |
4694 | error_report("Failed to get size for '%s'", in.filename); | |
4695 | ret = -1; | |
4696 | goto out; | |
4697 | } | |
4698 | ||
4699 | if (dd.flags & C_COUNT && dd.count <= INT64_MAX / in.bsz && | |
4700 | dd.count * in.bsz < size) { | |
4701 | size = dd.count * in.bsz; | |
4702 | } | |
4703 | ||
f7c15533 RS |
4704 | /* Overflow means the specified offset is beyond input image's size */ |
4705 | if (dd.flags & C_SKIP && (in.offset > INT64_MAX / in.bsz || | |
4706 | size < in.bsz * in.offset)) { | |
4707 | qemu_opt_set_number(opts, BLOCK_OPT_SIZE, 0, &error_abort); | |
4708 | } else { | |
4709 | qemu_opt_set_number(opts, BLOCK_OPT_SIZE, | |
4710 | size - in.bsz * in.offset, &error_abort); | |
4711 | } | |
86ce1f6e RS |
4712 | |
4713 | ret = bdrv_create(drv, out.filename, opts, &local_err); | |
4714 | if (ret < 0) { | |
4715 | error_reportf_err(local_err, | |
4716 | "%s: error while creating output image: ", | |
4717 | out.filename); | |
4718 | ret = -1; | |
4719 | goto out; | |
4720 | } | |
4721 | ||
ea204dda DB |
4722 | /* TODO, we can't honour --image-opts for the target, |
4723 | * since it needs to be given in a format compatible | |
4724 | * with the bdrv_create() call above which does not | |
4725 | * support image-opts style. | |
4726 | */ | |
29cf9336 | 4727 | blk2 = img_open_file(out.filename, NULL, out_fmt, BDRV_O_RDWR, |
ea204dda | 4728 | false, false, false); |
86ce1f6e RS |
4729 | |
4730 | if (!blk2) { | |
4731 | ret = -1; | |
4732 | goto out; | |
4733 | } | |
4734 | ||
f7c15533 RS |
4735 | if (dd.flags & C_SKIP && (in.offset > INT64_MAX / in.bsz || |
4736 | size < in.offset * in.bsz)) { | |
4737 | /* We give a warning if the skip option is bigger than the input | |
4738 | * size and create an empty output disk image (i.e. like dd(1)). | |
4739 | */ | |
4740 | error_report("%s: cannot skip to specified offset", in.filename); | |
4741 | in_pos = size; | |
4742 | } else { | |
4743 | in_pos = in.offset * in.bsz; | |
4744 | } | |
4745 | ||
86ce1f6e RS |
4746 | in.buf = g_new(uint8_t, in.bsz); |
4747 | ||
f7c15533 | 4748 | for (out_pos = 0; in_pos < size; block_count++) { |
86ce1f6e RS |
4749 | int in_ret, out_ret; |
4750 | ||
4751 | if (in_pos + in.bsz > size) { | |
4752 | in_ret = blk_pread(blk1, in_pos, in.buf, size - in_pos); | |
4753 | } else { | |
4754 | in_ret = blk_pread(blk1, in_pos, in.buf, in.bsz); | |
4755 | } | |
4756 | if (in_ret < 0) { | |
4757 | error_report("error while reading from input image file: %s", | |
4758 | strerror(-in_ret)); | |
4759 | ret = -1; | |
4760 | goto out; | |
4761 | } | |
4762 | in_pos += in_ret; | |
4763 | ||
4764 | out_ret = blk_pwrite(blk2, out_pos, in.buf, in_ret, 0); | |
4765 | ||
4766 | if (out_ret < 0) { | |
4767 | error_report("error while writing to output image file: %s", | |
4768 | strerror(-out_ret)); | |
4769 | ret = -1; | |
4770 | goto out; | |
4771 | } | |
4772 | out_pos += out_ret; | |
4773 | } | |
4774 | ||
4775 | out: | |
4776 | g_free(arg); | |
4777 | qemu_opts_del(opts); | |
4778 | qemu_opts_free(create_opts); | |
4779 | blk_unref(blk1); | |
4780 | blk_unref(blk2); | |
4781 | g_free(in.filename); | |
4782 | g_free(out.filename); | |
4783 | g_free(in.buf); | |
4784 | g_free(out.buf); | |
4785 | ||
4786 | if (ret) { | |
b6133b8c KW |
4787 | return 1; |
4788 | } | |
4789 | return 0; | |
4790 | } | |
4791 | ||
fd03c2b8 SH |
4792 | static void dump_json_block_measure_info(BlockMeasureInfo *info) |
4793 | { | |
4794 | QString *str; | |
4795 | QObject *obj; | |
4796 | Visitor *v = qobject_output_visitor_new(&obj); | |
4797 | ||
4798 | visit_type_BlockMeasureInfo(v, NULL, &info, &error_abort); | |
4799 | visit_complete(v, &obj); | |
4800 | str = qobject_to_json_pretty(obj); | |
4801 | assert(str != NULL); | |
4802 | printf("%s\n", qstring_get_str(str)); | |
cb3e7f08 | 4803 | qobject_unref(obj); |
fd03c2b8 | 4804 | visit_free(v); |
cb3e7f08 | 4805 | qobject_unref(str); |
fd03c2b8 SH |
4806 | } |
4807 | ||
4808 | static int img_measure(int argc, char **argv) | |
4809 | { | |
4810 | static const struct option long_options[] = { | |
4811 | {"help", no_argument, 0, 'h'}, | |
4812 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, | |
4813 | {"object", required_argument, 0, OPTION_OBJECT}, | |
4814 | {"output", required_argument, 0, OPTION_OUTPUT}, | |
4815 | {"size", required_argument, 0, OPTION_SIZE}, | |
4816 | {"force-share", no_argument, 0, 'U'}, | |
4817 | {0, 0, 0, 0} | |
4818 | }; | |
4819 | OutputFormat output_format = OFORMAT_HUMAN; | |
4820 | BlockBackend *in_blk = NULL; | |
4821 | BlockDriver *drv; | |
4822 | const char *filename = NULL; | |
4823 | const char *fmt = NULL; | |
4824 | const char *out_fmt = "raw"; | |
4825 | char *options = NULL; | |
4826 | char *snapshot_name = NULL; | |
4827 | bool force_share = false; | |
4828 | QemuOpts *opts = NULL; | |
4829 | QemuOpts *object_opts = NULL; | |
4830 | QemuOpts *sn_opts = NULL; | |
4831 | QemuOptsList *create_opts = NULL; | |
4832 | bool image_opts = false; | |
4833 | uint64_t img_size = UINT64_MAX; | |
4834 | BlockMeasureInfo *info = NULL; | |
4835 | Error *local_err = NULL; | |
4836 | int ret = 1; | |
4837 | int c; | |
4838 | ||
4839 | while ((c = getopt_long(argc, argv, "hf:O:o:l:U", | |
4840 | long_options, NULL)) != -1) { | |
4841 | switch (c) { | |
4842 | case '?': | |
4843 | case 'h': | |
4844 | help(); | |
4845 | break; | |
4846 | case 'f': | |
4847 | fmt = optarg; | |
4848 | break; | |
4849 | case 'O': | |
4850 | out_fmt = optarg; | |
4851 | break; | |
4852 | case 'o': | |
4853 | if (!is_valid_option_list(optarg)) { | |
4854 | error_report("Invalid option list: %s", optarg); | |
4855 | goto out; | |
4856 | } | |
4857 | if (!options) { | |
4858 | options = g_strdup(optarg); | |
4859 | } else { | |
4860 | char *old_options = options; | |
4861 | options = g_strdup_printf("%s,%s", options, optarg); | |
4862 | g_free(old_options); | |
4863 | } | |
4864 | break; | |
4865 | case 'l': | |
4866 | if (strstart(optarg, SNAPSHOT_OPT_BASE, NULL)) { | |
4867 | sn_opts = qemu_opts_parse_noisily(&internal_snapshot_opts, | |
4868 | optarg, false); | |
4869 | if (!sn_opts) { | |
4870 | error_report("Failed in parsing snapshot param '%s'", | |
4871 | optarg); | |
4872 | goto out; | |
4873 | } | |
4874 | } else { | |
4875 | snapshot_name = optarg; | |
4876 | } | |
4877 | break; | |
4878 | case 'U': | |
4879 | force_share = true; | |
4880 | break; | |
4881 | case OPTION_OBJECT: | |
4882 | object_opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
4883 | optarg, true); | |
4884 | if (!object_opts) { | |
4885 | goto out; | |
4886 | } | |
4887 | break; | |
4888 | case OPTION_IMAGE_OPTS: | |
4889 | image_opts = true; | |
4890 | break; | |
4891 | case OPTION_OUTPUT: | |
4892 | if (!strcmp(optarg, "json")) { | |
4893 | output_format = OFORMAT_JSON; | |
4894 | } else if (!strcmp(optarg, "human")) { | |
4895 | output_format = OFORMAT_HUMAN; | |
4896 | } else { | |
4897 | error_report("--output must be used with human or json " | |
4898 | "as argument."); | |
4899 | goto out; | |
4900 | } | |
4901 | break; | |
4902 | case OPTION_SIZE: | |
4903 | { | |
4904 | int64_t sval; | |
4905 | ||
4906 | sval = cvtnum(optarg); | |
4907 | if (sval < 0) { | |
4908 | if (sval == -ERANGE) { | |
4909 | error_report("Image size must be less than 8 EiB!"); | |
4910 | } else { | |
4911 | error_report("Invalid image size specified! You may use " | |
4912 | "k, M, G, T, P or E suffixes for "); | |
4913 | error_report("kilobytes, megabytes, gigabytes, terabytes, " | |
4914 | "petabytes and exabytes."); | |
4915 | } | |
4916 | goto out; | |
4917 | } | |
4918 | img_size = (uint64_t)sval; | |
4919 | } | |
4920 | break; | |
4921 | } | |
4922 | } | |
4923 | ||
4924 | if (qemu_opts_foreach(&qemu_object_opts, | |
4925 | user_creatable_add_opts_foreach, | |
c6e5cdfd | 4926 | qemu_img_object_print_help, &error_fatal)) { |
fd03c2b8 SH |
4927 | goto out; |
4928 | } | |
4929 | ||
4930 | if (argc - optind > 1) { | |
4931 | error_report("At most one filename argument is allowed."); | |
4932 | goto out; | |
4933 | } else if (argc - optind == 1) { | |
4934 | filename = argv[optind]; | |
4935 | } | |
4936 | ||
c3673dcf SH |
4937 | if (!filename && (image_opts || fmt || snapshot_name || sn_opts)) { |
4938 | error_report("--image-opts, -f, and -l require a filename argument."); | |
fd03c2b8 SH |
4939 | goto out; |
4940 | } | |
4941 | if (filename && img_size != UINT64_MAX) { | |
4942 | error_report("--size N cannot be used together with a filename."); | |
4943 | goto out; | |
4944 | } | |
4945 | if (!filename && img_size == UINT64_MAX) { | |
4946 | error_report("Either --size N or one filename must be specified."); | |
4947 | goto out; | |
4948 | } | |
4949 | ||
4950 | if (filename) { | |
4951 | in_blk = img_open(image_opts, filename, fmt, 0, | |
4952 | false, false, force_share); | |
4953 | if (!in_blk) { | |
4954 | goto out; | |
4955 | } | |
4956 | ||
4957 | if (sn_opts) { | |
4958 | bdrv_snapshot_load_tmp(blk_bs(in_blk), | |
4959 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_ID), | |
4960 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_NAME), | |
4961 | &local_err); | |
4962 | } else if (snapshot_name != NULL) { | |
4963 | bdrv_snapshot_load_tmp_by_id_or_name(blk_bs(in_blk), | |
4964 | snapshot_name, &local_err); | |
4965 | } | |
4966 | if (local_err) { | |
4967 | error_reportf_err(local_err, "Failed to load snapshot: "); | |
4968 | goto out; | |
4969 | } | |
4970 | } | |
4971 | ||
4972 | drv = bdrv_find_format(out_fmt); | |
4973 | if (!drv) { | |
4974 | error_report("Unknown file format '%s'", out_fmt); | |
4975 | goto out; | |
4976 | } | |
4977 | if (!drv->create_opts) { | |
4978 | error_report("Format driver '%s' does not support image creation", | |
4979 | drv->format_name); | |
4980 | goto out; | |
4981 | } | |
4982 | ||
4983 | create_opts = qemu_opts_append(create_opts, drv->create_opts); | |
4984 | create_opts = qemu_opts_append(create_opts, bdrv_file.create_opts); | |
4985 | opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); | |
4986 | if (options) { | |
4987 | qemu_opts_do_parse(opts, options, NULL, &local_err); | |
4988 | if (local_err) { | |
4989 | error_report_err(local_err); | |
4990 | error_report("Invalid options for file format '%s'", out_fmt); | |
4991 | goto out; | |
4992 | } | |
4993 | } | |
4994 | if (img_size != UINT64_MAX) { | |
4995 | qemu_opt_set_number(opts, BLOCK_OPT_SIZE, img_size, &error_abort); | |
4996 | } | |
4997 | ||
4998 | info = bdrv_measure(drv, opts, in_blk ? blk_bs(in_blk) : NULL, &local_err); | |
4999 | if (local_err) { | |
5000 | error_report_err(local_err); | |
5001 | goto out; | |
5002 | } | |
5003 | ||
5004 | if (output_format == OFORMAT_HUMAN) { | |
5005 | printf("required size: %" PRIu64 "\n", info->required); | |
5006 | printf("fully allocated size: %" PRIu64 "\n", info->fully_allocated); | |
5007 | } else { | |
5008 | dump_json_block_measure_info(info); | |
5009 | } | |
5010 | ||
5011 | ret = 0; | |
5012 | ||
5013 | out: | |
5014 | qapi_free_BlockMeasureInfo(info); | |
5015 | qemu_opts_del(object_opts); | |
5016 | qemu_opts_del(opts); | |
5017 | qemu_opts_del(sn_opts); | |
5018 | qemu_opts_free(create_opts); | |
5019 | g_free(options); | |
5020 | blk_unref(in_blk); | |
5021 | return ret; | |
5022 | } | |
b6133b8c | 5023 | |
c227f099 | 5024 | static const img_cmd_t img_cmds[] = { |
153859be SB |
5025 | #define DEF(option, callback, arg_string) \ |
5026 | { option, callback }, | |
5027 | #include "qemu-img-cmds.h" | |
5028 | #undef DEF | |
153859be SB |
5029 | { NULL, NULL, }, |
5030 | }; | |
5031 | ||
ea2384d3 FB |
5032 | int main(int argc, char **argv) |
5033 | { | |
c227f099 | 5034 | const img_cmd_t *cmd; |
153859be | 5035 | const char *cmdname; |
2f78e491 | 5036 | Error *local_error = NULL; |
06a1e0c1 | 5037 | char *trace_file = NULL; |
7db1689c | 5038 | int c; |
7db1689c JC |
5039 | static const struct option long_options[] = { |
5040 | {"help", no_argument, 0, 'h'}, | |
10985131 | 5041 | {"version", no_argument, 0, 'V'}, |
06a1e0c1 | 5042 | {"trace", required_argument, NULL, 'T'}, |
7db1689c JC |
5043 | {0, 0, 0, 0} |
5044 | }; | |
ea2384d3 | 5045 | |
526eda14 MK |
5046 | #ifdef CONFIG_POSIX |
5047 | signal(SIGPIPE, SIG_IGN); | |
5048 | #endif | |
5049 | ||
f5852efa | 5050 | error_init(argv[0]); |
fe4db84d | 5051 | module_call_init(MODULE_INIT_TRACE); |
10f5bff6 | 5052 | qemu_init_exec_dir(argv[0]); |
53f76e58 | 5053 | |
2f78e491 | 5054 | if (qemu_init_main_loop(&local_error)) { |
565f65d2 | 5055 | error_report_err(local_error); |
2f78e491 CN |
5056 | exit(EXIT_FAILURE); |
5057 | } | |
5058 | ||
e8f2d272 | 5059 | qcrypto_init(&error_fatal); |
c2297088 | 5060 | |
064097d9 | 5061 | module_call_init(MODULE_INIT_QOM); |
ea2384d3 | 5062 | bdrv_init(); |
ac1307ab FZ |
5063 | if (argc < 2) { |
5064 | error_exit("Not enough arguments"); | |
5065 | } | |
153859be | 5066 | |
3babeb15 | 5067 | qemu_add_opts(&qemu_object_opts); |
eb769f74 | 5068 | qemu_add_opts(&qemu_source_opts); |
06a1e0c1 | 5069 | qemu_add_opts(&qemu_trace_opts); |
3babeb15 | 5070 | |
c9192973 | 5071 | while ((c = getopt_long(argc, argv, "+:hVT:", long_options, NULL)) != -1) { |
10985131 | 5072 | switch (c) { |
c9192973 SH |
5073 | case ':': |
5074 | missing_argument(argv[optind - 1]); | |
5075 | return 0; | |
4581c16f | 5076 | case '?': |
c9192973 SH |
5077 | unrecognized_option(argv[optind - 1]); |
5078 | return 0; | |
5079 | case 'h': | |
10985131 DL |
5080 | help(); |
5081 | return 0; | |
5082 | case 'V': | |
5083 | printf(QEMU_IMG_VERSION); | |
5084 | return 0; | |
06a1e0c1 DL |
5085 | case 'T': |
5086 | g_free(trace_file); | |
5087 | trace_file = trace_opt_parse(optarg); | |
5088 | break; | |
153859be | 5089 | } |
ea2384d3 | 5090 | } |
153859be | 5091 | |
10985131 | 5092 | cmdname = argv[optind]; |
7db1689c | 5093 | |
10985131 DL |
5094 | /* reset getopt_long scanning */ |
5095 | argc -= optind; | |
5096 | if (argc < 1) { | |
5f6979cb JC |
5097 | return 0; |
5098 | } | |
10985131 | 5099 | argv += optind; |
d339d766 | 5100 | qemu_reset_optind(); |
10985131 | 5101 | |
06a1e0c1 DL |
5102 | if (!trace_init_backends()) { |
5103 | exit(1); | |
5104 | } | |
5105 | trace_init_file(trace_file); | |
5106 | qemu_set_log(LOG_TRACE); | |
5107 | ||
10985131 DL |
5108 | /* find the command */ |
5109 | for (cmd = img_cmds; cmd->name != NULL; cmd++) { | |
5110 | if (!strcmp(cmdname, cmd->name)) { | |
5111 | return cmd->handler(argc, argv); | |
5112 | } | |
5113 | } | |
7db1689c | 5114 | |
153859be | 5115 | /* not found */ |
ac1307ab | 5116 | error_exit("Command not found: %s", cmdname); |
ea2384d3 | 5117 | } |